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brcm2708: add linux 4.9 support

Browse Source 
Patches from Raspberry Pi repo:
https://github.com/raspberrypi/linux/commits/rpi-4.9.y

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
This commit is contained in:
Álvaro Fernández Rojas 2017-02-07 21:07:54 +01:00
parent 6b5c3fd055
commit 96aa0c6b0b
148 changed files with 301419 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

365
target/linux/brcm2708/bcm2708/config-4.9 Normal file
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# CONFIG_AIO is not set
CONFIG_ALIGNMENT_TRAP=y
# CONFIG_AMBA_PL08X is not set
CONFIG_ARCH_BCM=y
CONFIG_ARCH_BCM2835=y
CONFIG_ARCH_CLOCKSOURCE_DATA=y
CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
CONFIG_ARCH_HAS_SG_CHAIN=y
CONFIG_ARCH_HAVE_CUSTOM_GPIO_H=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
CONFIG_ARCH_MULTIPLATFORM=y
# CONFIG_ARCH_MULTI_CPU_AUTO is not set
CONFIG_ARCH_MULTI_V6=y
CONFIG_ARCH_MULTI_V6_V7=y
CONFIG_ARCH_NR_GPIO=0
# CONFIG_ARCH_SELECT_MEMORY_MODEL is not set
# CONFIG_ARCH_SPARSEMEM_DEFAULT is not set
CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
CONFIG_ARCH_SUPPORTS_UPROBES=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARCH_USE_BUILTIN_BSWAP=y
CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
CONFIG_ARM=y
CONFIG_ARM_AMBA=y
CONFIG_ARM_CPU_SUSPEND=y
CONFIG_ARM_ERRATA_411920=y
CONFIG_ARM_HAS_SG_CHAIN=y
CONFIG_ARM_L1_CACHE_SHIFT=5
CONFIG_ARM_PATCH_PHYS_VIRT=y
# CONFIG_ARM_SCPI_PROTOCOL is not set
# CONFIG_ARM_SP805_WATCHDOG is not set
CONFIG_ARM_THUMB=y
CONFIG_ARM_TIMER_SP804=y
CONFIG_ARM_UNWIND=y
CONFIG_AUTO_ZRELADDR=y
# CONFIG_BACKLIGHT_CLASS_DEVICE is not set
CONFIG_BACKLIGHT_LCD_SUPPORT=y
CONFIG_BCM2708_VCHIQ=y
CONFIG_BCM2708_VCMEM=y
# CONFIG_BCM2835_DEVGPIOMEM is not set
CONFIG_BCM2835_FAST_MEMCPY=y
CONFIG_BCM2835_MBOX=y
# CONFIG_BCM2835_SMI is not set
CONFIG_BCM2835_TIMER=y
CONFIG_BCM2835_WDT=y
CONFIG_BCM_VCIO=y
CONFIG_BCM_VC_CMA=y
CONFIG_BCM_VC_SM=y
# CONFIG_BINFMT_FLAT is not set
# CONFIG_BLK_DEV_INITRD is not set
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=16
CONFIG_BLK_DEV_RAM_SIZE=4096
CONFIG_BLK_DEV_SD=y
CONFIG_BRCM_CHAR_DRIVERS=y
CONFIG_BUILD_BIN2C=y
# CONFIG_CACHE_L2X0 is not set
CONFIG_CLKDEV_LOOKUP=y
CONFIG_CLKSRC_MMIO=y
CONFIG_CLKSRC_OF=y
CONFIG_CLKSRC_PROBE=y
CONFIG_CLONE_BACKWARDS=y
CONFIG_CMA=y
CONFIG_CMA_ALIGNMENT=8
CONFIG_CMA_AREAS=7
# CONFIG_CMA_DEBUG is not set
# CONFIG_CMA_DEBUGFS is not set
CONFIG_CMA_SIZE_MBYTES=16
# CONFIG_CMA_SIZE_SEL_MAX is not set
CONFIG_CMA_SIZE_SEL_MBYTES=y
# CONFIG_CMA_SIZE_SEL_MIN is not set
# CONFIG_CMA_SIZE_SEL_PERCENTAGE is not set
CONFIG_COMMON_CLK=y
CONFIG_CONFIGFS_FS=y
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_CPU_32v6=y
CONFIG_CPU_32v6K=y
CONFIG_CPU_ABRT_EV6=y
# CONFIG_CPU_BPREDICT_DISABLE is not set
CONFIG_CPU_CACHE_V6=y
CONFIG_CPU_CACHE_VIPT=y
CONFIG_CPU_COPY_V6=y
CONFIG_CPU_CP15=y
CONFIG_CPU_CP15_MMU=y
CONFIG_CPU_HAS_ASID=y
# CONFIG_CPU_ICACHE_DISABLE is not set
CONFIG_CPU_IDLE=y
CONFIG_CPU_IDLE_GOV_LADDER=y
CONFIG_CPU_IDLE_GOV_MENU=y
CONFIG_CPU_PABRT_V6=y
CONFIG_CPU_PM=y
CONFIG_CPU_TLB_V6=y
CONFIG_CPU_V6K=y
CONFIG_CRC16=y
CONFIG_CRYPTO_CRC32C=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_HASH2=y
CONFIG_CRYPTO_RNG2=y
CONFIG_CRYPTO_WORKQUEUE=y
CONFIG_DCACHE_WORD_ACCESS=y
CONFIG_DEBUG_BUGVERBOSE=y
CONFIG_DEBUG_INFO=y
CONFIG_DEBUG_LL_INCLUDE="mach/debug-macro.S"
# CONFIG_DEBUG_UART_8250 is not set
# CONFIG_DEBUG_USER is not set
CONFIG_DEFAULT_CFQ=y
# CONFIG_DEFAULT_DEADLINE is not set
CONFIG_DEFAULT_IOSCHED="cfq"
CONFIG_DMADEVICES=y
CONFIG_DMA_BCM2708=y
CONFIG_DMA_BCM2835=y
CONFIG_DMA_CMA=y
CONFIG_DMA_ENGINE=y
CONFIG_DMA_OF=y
CONFIG_DMA_VIRTUAL_CHANNELS=y
CONFIG_DNOTIFY=y
CONFIG_DTC=y
CONFIG_DUMMY_CONSOLE=y
CONFIG_EDAC_ATOMIC_SCRUB=y
CONFIG_EDAC_SUPPORT=y
CONFIG_ENABLE_MUST_CHECK=y
CONFIG_EXT4_FS=y
CONFIG_EXT4_FS_POSIX_ACL=y
CONFIG_EXT4_FS_SECURITY=y
CONFIG_FB=y
CONFIG_FB_BCM2708=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_IMAGEBLIT=y
CONFIG_FB_CMDLINE=y
# CONFIG_FB_RPISENSE is not set
CONFIG_FIQ=y
CONFIG_FIRMWARE_IN_KERNEL=y
CONFIG_FIX_EARLYCON_MEM=y
# CONFIG_FONTS is not set
CONFIG_FONT_8x16=y
CONFIG_FONT_8x8=y
CONFIG_FONT_SUPPORT=y
# CONFIG_FPE_FASTFPE is not set
# CONFIG_FPE_NWFPE is not set
CONFIG_FRAMEBUFFER_CONSOLE=y
# CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY is not set
# CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set
CONFIG_FREEZER=y
CONFIG_FS_MBCACHE=y
CONFIG_FS_POSIX_ACL=y
CONFIG_GENERIC_ALLOCATOR=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_EARLY_IOREMAP=y
CONFIG_GENERIC_IDLE_POLL_SETUP=y
CONFIG_GENERIC_IO=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_IRQ_SHOW_LEVEL=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_GENERIC_PINCONF=y
CONFIG_GENERIC_SCHED_CLOCK=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
CONFIG_GPIOLIB=y
# CONFIG_GPIO_BCM_VIRT is not set
CONFIG_GPIO_SYSFS=y
CONFIG_HANDLE_DOMAIN_IRQ=y
CONFIG_HARDIRQS_SW_RESEND=y
CONFIG_HAS_DMA=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT_MAP=y
# CONFIG_HAVE_64BIT_ALIGNED_ACCESS is not set
# CONFIG_HAVE_ARCH_BITREVERSE is not set
CONFIG_HAVE_ARCH_JUMP_LABEL=y
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_HAVE_ARCH_PFN_VALID=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
# CONFIG_HAVE_BOOTMEM_INFO_NODE is not set
CONFIG_HAVE_CBPF_JIT=y
CONFIG_HAVE_CC_STACKPROTECTOR=y
CONFIG_HAVE_CLK=y
CONFIG_HAVE_CLK_PREPARE=y
CONFIG_HAVE_CONTEXT_TRACKING=y
CONFIG_HAVE_C_RECORDMCOUNT=y
CONFIG_HAVE_DEBUG_KMEMLEAK=y
CONFIG_HAVE_DMA_API_DEBUG=y
CONFIG_HAVE_DMA_CONTIGUOUS=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_GENERIC_DMA_COHERENT=y
CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
CONFIG_HAVE_MEMBLOCK=y
CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
CONFIG_HAVE_NET_DSA=y
CONFIG_HAVE_OPROFILE=y
CONFIG_HAVE_OPTPROBES=y
CONFIG_HAVE_PERF_EVENTS=y
CONFIG_HAVE_PERF_REGS=y
CONFIG_HAVE_PERF_USER_STACK_DUMP=y
CONFIG_HAVE_PROC_CPU=y
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_HAVE_UID16=y
CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
CONFIG_HW_CONSOLE=y
CONFIG_HZ_FIXED=0
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_INPUT=y
CONFIG_INPUT_MOUSEDEV=y
# CONFIG_INPUT_MOUSEDEV_PSAUX is not set
CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
CONFIG_IOMMU_HELPER=y
CONFIG_IOSCHED_CFQ=y
CONFIG_IRQCHIP=y
CONFIG_IRQ_DOMAIN=y
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_IRQ_WORK=y
CONFIG_JBD2=y
CONFIG_KERNEL_GZIP=y
# CONFIG_KERNEL_XZ is not set
# CONFIG_LCD_CLASS_DEVICE is not set
CONFIG_LEDS_GPIO=y
CONFIG_LEDS_TRIGGER_INPUT=y
CONFIG_LIBFDT=y
CONFIG_LOGO=y
CONFIG_LOGO_LINUX_CLUT224=y
# CONFIG_LOGO_LINUX_MONO is not set
# CONFIG_LOGO_LINUX_VGA16 is not set
CONFIG_MAC_PARTITION=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_MAILBOX=y
# CONFIG_MAILBOX_TEST is not set
CONFIG_MAX_RAW_DEVS=256
CONFIG_MEMORY_ISOLATION=y
CONFIG_MIGHT_HAVE_CACHE_L2X0=y
CONFIG_MIGHT_HAVE_PCI=y
CONFIG_MIGRATION=y
CONFIG_MMC=y
CONFIG_MMC_BCM2835=y
CONFIG_MMC_BCM2835_DMA=y
CONFIG_MMC_BCM2835_PIO_DMA_BARRIER=2
CONFIG_MMC_BCM2835_SDHOST=y
CONFIG_MMC_BLOCK=y
CONFIG_MMC_BLOCK_MINORS=32
CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_PLTFM=y
CONFIG_MODULES_USE_ELF_REL=y
# CONFIG_MTD is not set
CONFIG_MULTI_IRQ_HANDLER=y
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_NEED_PER_CPU_KM=y
CONFIG_NLS=y
CONFIG_NLS_ASCII=y
CONFIG_NLS_DEFAULT="utf8"
CONFIG_NO_BOOTMEM=y
CONFIG_NO_HZ=y
CONFIG_NO_HZ_COMMON=y
CONFIG_NO_HZ_IDLE=y
CONFIG_OABI_COMPAT=y
CONFIG_OF=y
CONFIG_OF_ADDRESS=y
CONFIG_OF_CONFIGFS=y
CONFIG_OF_DYNAMIC=y
CONFIG_OF_EARLY_FLATTREE=y
CONFIG_OF_FLATTREE=y
CONFIG_OF_GPIO=y
CONFIG_OF_IRQ=y
CONFIG_OF_NET=y
CONFIG_OF_OVERLAY=y
CONFIG_OF_RESERVED_MEM=y
CONFIG_OF_RESOLVE=y
CONFIG_OLD_SIGACTION=y
CONFIG_OLD_SIGSUSPEND3=y
CONFIG_PAGE_OFFSET=0xC0000000
# CONFIG_PCI_DOMAINS_GENERIC is not set
# CONFIG_PCI_SYSCALL is not set
CONFIG_PERF_USE_VMALLOC=y
CONFIG_PGTABLE_LEVELS=2
CONFIG_PINCTRL=y
CONFIG_PINCTRL_BCM2835=y
# CONFIG_PL330_DMA is not set
CONFIG_PM=y
CONFIG_PM_CLK=y
# CONFIG_PM_DEBUG is not set
CONFIG_PM_GENERIC_DOMAINS=y
CONFIG_PM_GENERIC_DOMAINS_OF=y
CONFIG_PM_GENERIC_DOMAINS_SLEEP=y
CONFIG_PM_SLEEP=y
CONFIG_POWER_SUPPLY=y
CONFIG_PRINTK_TIME=y
CONFIG_PROC_PAGE_MONITOR=y
CONFIG_PWM=y
CONFIG_PWM_BCM2835=y
CONFIG_PWM_SYSFS=y
CONFIG_RASPBERRYPI_FIRMWARE=y
CONFIG_RASPBERRYPI_POWER=y
CONFIG_RATIONAL=y
CONFIG_RAW_DRIVER=y
# CONFIG_RCU_STALL_COMMON is not set
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_SCHED_HRTICK=y
# CONFIG_SCHED_INFO is not set
CONFIG_SCSI=y
# CONFIG_SCSI_LOWLEVEL is not set
# CONFIG_SCSI_PROC_FS is not set
CONFIG_SERIAL_8250_BCM2835AUX=y
# CONFIG_SERIAL_8250_DMA is not set
CONFIG_SERIAL_8250_EXTENDED=y
CONFIG_SERIAL_8250_FSL=y
CONFIG_SERIAL_8250_NR_UARTS=1
CONFIG_SERIAL_8250_RUNTIME_UARTS=0
CONFIG_SERIAL_8250_SHARE_IRQ=y
# CONFIG_SERIAL_AMBA_PL010 is not set
CONFIG_SERIAL_AMBA_PL011=y
CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
CONFIG_SERIAL_OF_PLATFORM=y
CONFIG_SPARSE_IRQ=y
# CONFIG_SQUASHFS is not set
CONFIG_SRCU=y
# CONFIG_STRIP_ASM_SYMS is not set
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
CONFIG_SWIOTLB=y
CONFIG_SYS_SUPPORTS_APM_EMULATION=y
# CONFIG_TEXTSEARCH is not set
CONFIG_THERMAL=y
CONFIG_THERMAL_BCM2835=y
CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
CONFIG_THERMAL_GOV_STEP_WISE=y
CONFIG_THERMAL_OF=y
CONFIG_TICK_CPU_ACCOUNTING=y
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_UEVENT_HELPER_PATH=""
# CONFIG_UID16 is not set
CONFIG_UNCOMPRESS_INCLUDE="debug/uncompress.h"
CONFIG_USB=y
CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
CONFIG_USB_COMMON=y
CONFIG_USB_DWCOTG=y
# CONFIG_USB_EHCI_HCD is not set
CONFIG_USB_NET_DRIVERS=y
CONFIG_USB_NET_SMSC95XX=y
CONFIG_USB_STORAGE=y
CONFIG_USB_SUPPORT=y
CONFIG_USB_UAS=y
CONFIG_USB_USBNET=y
CONFIG_USE_OF=y
CONFIG_VECTORS_BASE=0xffff0000
CONFIG_VFP=y
CONFIG_VT=y
CONFIG_VT_CONSOLE=y
CONFIG_VT_CONSOLE_SLEEP=y
CONFIG_VT_HW_CONSOLE_BINDING=y
CONFIG_WATCHDOG_CORE=y
CONFIG_XZ_DEC_ARM=y
CONFIG_XZ_DEC_BCJ=y
CONFIG_ZBOOT_ROM_BSS=0x0
CONFIG_ZBOOT_ROM_TEXT=0x0

407
target/linux/brcm2708/bcm2709/config-4.9 Normal file
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# CONFIG_AIO is not set
CONFIG_ALIGNMENT_TRAP=y
# CONFIG_AMBA_PL08X is not set
CONFIG_ARCH_BCM=y
CONFIG_ARCH_BCM2835=y
CONFIG_ARCH_CLOCKSOURCE_DATA=y
CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
CONFIG_ARCH_HAS_SG_CHAIN=y
CONFIG_ARCH_HAS_TICK_BROADCAST=y
CONFIG_ARCH_HAVE_CUSTOM_GPIO_H=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
CONFIG_ARCH_MMAP_RND_BITS_MAX=15
CONFIG_ARCH_MULTIPLATFORM=y
# CONFIG_ARCH_MULTI_CPU_AUTO is not set
CONFIG_ARCH_MULTI_V6_V7=y
CONFIG_ARCH_MULTI_V7=y
CONFIG_ARCH_NR_GPIO=0
# CONFIG_ARCH_SELECT_MEMORY_MODEL is not set
# CONFIG_ARCH_SPARSEMEM_DEFAULT is not set
CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
CONFIG_ARCH_SUPPORTS_UPROBES=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARCH_USE_BUILTIN_BSWAP=y
CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
CONFIG_ARM=y
CONFIG_ARM_AMBA=y
CONFIG_ARM_ARCH_TIMER=y
CONFIG_ARM_ARCH_TIMER_EVTSTREAM=y
CONFIG_ARM_CPU_SUSPEND=y
CONFIG_ARM_HAS_SG_CHAIN=y
CONFIG_ARM_L1_CACHE_SHIFT=6
CONFIG_ARM_L1_CACHE_SHIFT_6=y
# CONFIG_ARM_LPAE is not set
CONFIG_ARM_PATCH_IDIV=y
CONFIG_ARM_PATCH_PHYS_VIRT=y
# CONFIG_ARM_SCPI_PROTOCOL is not set
# CONFIG_ARM_SP805_WATCHDOG is not set
CONFIG_ARM_THUMB=y
# CONFIG_ARM_THUMBEE is not set
CONFIG_ARM_TIMER_SP804=y
CONFIG_ARM_UNWIND=y
CONFIG_ARM_VIRT_EXT=y
CONFIG_AUTO_ZRELADDR=y
# CONFIG_BACKLIGHT_CLASS_DEVICE is not set
CONFIG_BACKLIGHT_LCD_SUPPORT=y
CONFIG_BCM2708_VCHIQ=y
CONFIG_BCM2708_VCMEM=y
# CONFIG_BCM2835_DEVGPIOMEM is not set
CONFIG_BCM2835_MBOX=y
# CONFIG_BCM2835_SMI is not set
CONFIG_BCM2835_TIMER=y
CONFIG_BCM2835_WDT=y
CONFIG_BCM_VCIO=y
CONFIG_BCM_VC_CMA=y
CONFIG_BCM_VC_SM=y
# CONFIG_BINFMT_FLAT is not set
# CONFIG_BLK_DEV_INITRD is not set
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=16
CONFIG_BLK_DEV_RAM_SIZE=4096
CONFIG_BLK_DEV_SD=y
CONFIG_BRCM_CHAR_DRIVERS=y
CONFIG_BUILD_BIN2C=y
# CONFIG_CACHE_L2X0 is not set
CONFIG_CLKDEV_LOOKUP=y
CONFIG_CLKSRC_MMIO=y
CONFIG_CLKSRC_OF=y
CONFIG_CLKSRC_PROBE=y
CONFIG_CLONE_BACKWARDS=y
CONFIG_CMA=y
CONFIG_CMA_ALIGNMENT=8
CONFIG_CMA_AREAS=7
# CONFIG_CMA_DEBUG is not set
# CONFIG_CMA_DEBUGFS is not set
CONFIG_CMA_SIZE_MBYTES=16
# CONFIG_CMA_SIZE_SEL_MAX is not set
CONFIG_CMA_SIZE_SEL_MBYTES=y
# CONFIG_CMA_SIZE_SEL_MIN is not set
# CONFIG_CMA_SIZE_SEL_PERCENTAGE is not set
CONFIG_COMMON_CLK=y
CONFIG_CONFIGFS_FS=y
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_CPU_32v6K=y
CONFIG_CPU_32v7=y
CONFIG_CPU_ABRT_EV7=y
# CONFIG_CPU_BPREDICT_DISABLE is not set
CONFIG_CPU_CACHE_V7=y
CONFIG_CPU_CACHE_VIPT=y
CONFIG_CPU_COPY_V6=y
CONFIG_CPU_CP15=y
CONFIG_CPU_CP15_MMU=y
CONFIG_CPU_HAS_ASID=y
# CONFIG_CPU_HOTPLUG_STATE_CONTROL is not set
# CONFIG_CPU_ICACHE_DISABLE is not set
CONFIG_CPU_IDLE=y
CONFIG_CPU_IDLE_GOV_LADDER=y
CONFIG_CPU_IDLE_GOV_MENU=y
CONFIG_CPU_PABRT_V7=y
CONFIG_CPU_PM=y
CONFIG_CPU_RMAP=y
CONFIG_CPU_TLB_V7=y
CONFIG_CPU_V7=y
CONFIG_CRC16=y
CONFIG_CRYPTO_AEAD=y
CONFIG_CRYPTO_AEAD2=y
CONFIG_CRYPTO_CRC32C=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_HASH2=y
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_MANAGER2=y
CONFIG_CRYPTO_NULL2=y
CONFIG_CRYPTO_RNG2=y
CONFIG_CRYPTO_WORKQUEUE=y
CONFIG_DCACHE_WORD_ACCESS=y
CONFIG_DEBUG_BUGVERBOSE=y
CONFIG_DEBUG_INFO=y
CONFIG_DEBUG_LL_INCLUDE="mach/debug-macro.S"
# CONFIG_DEBUG_UART_8250 is not set
# CONFIG_DEBUG_USER is not set
CONFIG_DEFAULT_CFQ=y
# CONFIG_DEFAULT_DEADLINE is not set
CONFIG_DEFAULT_IOSCHED="cfq"
CONFIG_DMADEVICES=y
CONFIG_DMA_BCM2708=y
CONFIG_DMA_BCM2835=y
CONFIG_DMA_CMA=y
CONFIG_DMA_ENGINE=y
CONFIG_DMA_OF=y
CONFIG_DMA_VIRTUAL_CHANNELS=y
CONFIG_DNOTIFY=y
CONFIG_DTC=y
CONFIG_DUMMY_CONSOLE=y
CONFIG_EDAC_ATOMIC_SCRUB=y
CONFIG_EDAC_SUPPORT=y
CONFIG_ENABLE_MUST_CHECK=y
CONFIG_EXT4_FS=y
CONFIG_EXT4_FS_POSIX_ACL=y
CONFIG_EXT4_FS_SECURITY=y
CONFIG_FB=y
CONFIG_FB_BCM2708=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_IMAGEBLIT=y
CONFIG_FB_CMDLINE=y
# CONFIG_FB_RPISENSE is not set
CONFIG_FIQ=y
CONFIG_FIRMWARE_IN_KERNEL=y
CONFIG_FIX_EARLYCON_MEM=y
# CONFIG_FONTS is not set
CONFIG_FONT_8x16=y
CONFIG_FONT_8x8=y
CONFIG_FONT_SUPPORT=y
# CONFIG_FPE_FASTFPE is not set
# CONFIG_FPE_NWFPE is not set
CONFIG_FRAMEBUFFER_CONSOLE=y
# CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY is not set
# CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set
CONFIG_FREEZER=y
CONFIG_FS_MBCACHE=y
CONFIG_FS_POSIX_ACL=y
CONFIG_GENERIC_ALLOCATOR=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_GENERIC_EARLY_IOREMAP=y
CONFIG_GENERIC_IDLE_POLL_SETUP=y
CONFIG_GENERIC_IO=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_IRQ_SHOW_LEVEL=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_GENERIC_PINCONF=y
CONFIG_GENERIC_SCHED_CLOCK=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
CONFIG_GPIOLIB=y
# CONFIG_GPIO_BCM_VIRT is not set
CONFIG_GPIO_SYSFS=y
CONFIG_HANDLE_DOMAIN_IRQ=y
CONFIG_HARDIRQS_SW_RESEND=y
CONFIG_HAS_DMA=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT_MAP=y
# CONFIG_HAVE_64BIT_ALIGNED_ACCESS is not set
CONFIG_HAVE_ARCH_BITREVERSE=y
CONFIG_HAVE_ARCH_JUMP_LABEL=y
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_HAVE_ARCH_PFN_VALID=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_ARM_ARCH_TIMER=y
CONFIG_HAVE_ARM_SMCCC=y
# CONFIG_HAVE_BOOTMEM_INFO_NODE is not set
CONFIG_HAVE_CBPF_JIT=y
CONFIG_HAVE_CC_STACKPROTECTOR=y
CONFIG_HAVE_CLK=y
CONFIG_HAVE_CLK_PREPARE=y
CONFIG_HAVE_CONTEXT_TRACKING=y
CONFIG_HAVE_C_RECORDMCOUNT=y
CONFIG_HAVE_DEBUG_KMEMLEAK=y
CONFIG_HAVE_DMA_API_DEBUG=y
CONFIG_HAVE_DMA_CONTIGUOUS=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_GENERIC_DMA_COHERENT=y
CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
CONFIG_HAVE_MEMBLOCK=y
CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
CONFIG_HAVE_NET_DSA=y
CONFIG_HAVE_OPROFILE=y
CONFIG_HAVE_OPTPROBES=y
CONFIG_HAVE_PERF_EVENTS=y
CONFIG_HAVE_PERF_REGS=y
CONFIG_HAVE_PERF_USER_STACK_DUMP=y
CONFIG_HAVE_PROC_CPU=y
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
CONFIG_HAVE_SMP=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_HAVE_UID16=y
CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
CONFIG_HOTPLUG_CPU=y
CONFIG_HW_CONSOLE=y
CONFIG_HZ_FIXED=0
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_INPUT=y
CONFIG_INPUT_MOUSEDEV=y
# CONFIG_INPUT_MOUSEDEV_PSAUX is not set
CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
CONFIG_IOMMU_HELPER=y
CONFIG_IOSCHED_CFQ=y
CONFIG_IRQCHIP=y
CONFIG_IRQ_DOMAIN=y
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_IRQ_WORK=y
CONFIG_JBD2=y
CONFIG_KERNEL_GZIP=y
# CONFIG_KERNEL_XZ is not set
# CONFIG_LCD_CLASS_DEVICE is not set
CONFIG_LEDS_GPIO=y
CONFIG_LEDS_TRIGGER_INPUT=y
CONFIG_LIBFDT=y
CONFIG_LOCK_SPIN_ON_OWNER=y
CONFIG_LOGO=y
CONFIG_LOGO_LINUX_CLUT224=y
# CONFIG_LOGO_LINUX_MONO is not set
# CONFIG_LOGO_LINUX_VGA16 is not set
CONFIG_LZO_COMPRESS=y
CONFIG_LZO_DECOMPRESS=y
CONFIG_MAC_PARTITION=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_MAILBOX=y
# CONFIG_MAILBOX_TEST is not set
CONFIG_MAX_RAW_DEVS=256
CONFIG_MEMORY_ISOLATION=y
CONFIG_MFD_SYSCON=y
CONFIG_MIGHT_HAVE_CACHE_L2X0=y
CONFIG_MIGHT_HAVE_PCI=y
CONFIG_MIGRATION=y
CONFIG_MMC=y
CONFIG_MMC_BCM2835=y
CONFIG_MMC_BCM2835_DMA=y
CONFIG_MMC_BCM2835_PIO_DMA_BARRIER=2
CONFIG_MMC_BCM2835_SDHOST=y
CONFIG_MMC_BLOCK=y
CONFIG_MMC_BLOCK_MINORS=32
CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_PLTFM=y
CONFIG_MODULES_USE_ELF_REL=y
# CONFIG_MTD is not set
CONFIG_MULTI_IRQ_HANDLER=y
CONFIG_MUTEX_SPIN_ON_OWNER=y
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_NEON=y
CONFIG_NET_FLOW_LIMIT=y
CONFIG_NLS=y
CONFIG_NLS_ASCII=y
CONFIG_NLS_DEFAULT="utf8"
CONFIG_NO_BOOTMEM=y
CONFIG_NO_HZ=y
CONFIG_NO_HZ_COMMON=y
CONFIG_NO_HZ_IDLE=y
CONFIG_NR_CPUS=4
CONFIG_OABI_COMPAT=y
CONFIG_OF=y
CONFIG_OF_ADDRESS=y
CONFIG_OF_CONFIGFS=y
CONFIG_OF_DYNAMIC=y
CONFIG_OF_EARLY_FLATTREE=y
CONFIG_OF_FLATTREE=y
CONFIG_OF_GPIO=y
CONFIG_OF_IRQ=y
CONFIG_OF_NET=y
CONFIG_OF_OVERLAY=y
CONFIG_OF_RESERVED_MEM=y
CONFIG_OF_RESOLVE=y
CONFIG_OLD_SIGACTION=y
CONFIG_OLD_SIGSUSPEND3=y
CONFIG_PADATA=y
CONFIG_PAGE_OFFSET=0x80000000
# CONFIG_PCI_DOMAINS_GENERIC is not set
# CONFIG_PCI_SYSCALL is not set
CONFIG_PERF_USE_VMALLOC=y
CONFIG_PGTABLE_LEVELS=2
CONFIG_PINCTRL=y
CONFIG_PINCTRL_BCM2835=y
# CONFIG_PL330_DMA is not set
CONFIG_PM=y
CONFIG_PM_CLK=y
# CONFIG_PM_DEBUG is not set
CONFIG_PM_GENERIC_DOMAINS=y
CONFIG_PM_GENERIC_DOMAINS_OF=y
CONFIG_PM_GENERIC_DOMAINS_SLEEP=y
CONFIG_PM_SLEEP=y
CONFIG_PM_SLEEP_SMP=y
CONFIG_POWER_SUPPLY=y
CONFIG_PRINTK_TIME=y
CONFIG_PROC_PAGE_MONITOR=y
CONFIG_PWM=y
CONFIG_PWM_BCM2835=y
CONFIG_PWM_SYSFS=y
CONFIG_RASPBERRYPI_FIRMWARE=y
CONFIG_RASPBERRYPI_POWER=y
CONFIG_RATIONAL=y
CONFIG_RAW_DRIVER=y
CONFIG_RCU_STALL_COMMON=y
CONFIG_REGMAP=y
CONFIG_REGMAP_MMIO=y
CONFIG_RFS_ACCEL=y
CONFIG_RPS=y
CONFIG_RWSEM_SPIN_ON_OWNER=y
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_SCHED_HRTICK=y
# CONFIG_SCHED_INFO is not set
CONFIG_SCSI=y
# CONFIG_SCSI_LOWLEVEL is not set
# CONFIG_SCSI_PROC_FS is not set
CONFIG_SERIAL_8250_BCM2835AUX=y
# CONFIG_SERIAL_8250_DMA is not set
CONFIG_SERIAL_8250_EXTENDED=y
CONFIG_SERIAL_8250_FSL=y
CONFIG_SERIAL_8250_NR_UARTS=1
CONFIG_SERIAL_8250_RUNTIME_UARTS=0
CONFIG_SERIAL_8250_SHARE_IRQ=y
# CONFIG_SERIAL_AMBA_PL010 is not set
CONFIG_SERIAL_AMBA_PL011=y
CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
CONFIG_SERIAL_OF_PLATFORM=y
CONFIG_SMP=y
CONFIG_SMP_ON_UP=y
CONFIG_SPARSE_IRQ=y
# CONFIG_SQUASHFS is not set
CONFIG_SRCU=y
# CONFIG_STRIP_ASM_SYMS is not set
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
CONFIG_SWIOTLB=y
CONFIG_SWP_EMULATE=y
CONFIG_SYS_SUPPORTS_APM_EMULATION=y
# CONFIG_TEXTSEARCH is not set
CONFIG_THERMAL=y
CONFIG_THERMAL_BCM2835=y
CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
CONFIG_THERMAL_GOV_STEP_WISE=y
CONFIG_THERMAL_OF=y
# CONFIG_THUMB2_KERNEL is not set
CONFIG_TICK_CPU_ACCOUNTING=y
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_TREE_RCU=y
CONFIG_UEVENT_HELPER_PATH=""
# CONFIG_UID16 is not set
CONFIG_UNCOMPRESS_INCLUDE="debug/uncompress.h"
CONFIG_USB=y
CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
CONFIG_USB_COMMON=y
CONFIG_USB_DWCOTG=y
# CONFIG_USB_EHCI_HCD is not set
CONFIG_USB_NET_DRIVERS=y
CONFIG_USB_NET_SMSC95XX=y
CONFIG_USB_STORAGE=y
CONFIG_USB_SUPPORT=y
CONFIG_USB_UAS=y
CONFIG_USB_USBNET=y
CONFIG_USE_OF=y
CONFIG_VECTORS_BASE=0xffff0000
CONFIG_VFP=y
CONFIG_VFPv3=y
CONFIG_VMSPLIT_2G=y
# CONFIG_VMSPLIT_3G is not set
CONFIG_VT=y
CONFIG_VT_CONSOLE=y
CONFIG_VT_CONSOLE_SLEEP=y
CONFIG_VT_HW_CONSOLE_BINDING=y
CONFIG_WATCHDOG_CORE=y
CONFIG_XPS=y
CONFIG_XZ_DEC_ARM=y
CONFIG_XZ_DEC_BCJ=y
CONFIG_ZBOOT_ROM_BSS=0x0
CONFIG_ZBOOT_ROM_TEXT=0x0

407
target/linux/brcm2708/bcm2710/config-4.9 Normal file
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@ -0,0 +1,407 @@
# CONFIG_AIO is not set
CONFIG_ALIGNMENT_TRAP=y
# CONFIG_AMBA_PL08X is not set
CONFIG_ARCH_BCM=y
CONFIG_ARCH_BCM2835=y
CONFIG_ARCH_CLOCKSOURCE_DATA=y
CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
CONFIG_ARCH_HAS_SG_CHAIN=y
CONFIG_ARCH_HAS_TICK_BROADCAST=y
CONFIG_ARCH_HAVE_CUSTOM_GPIO_H=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
CONFIG_ARCH_MMAP_RND_BITS_MAX=15
CONFIG_ARCH_MULTIPLATFORM=y
# CONFIG_ARCH_MULTI_CPU_AUTO is not set
CONFIG_ARCH_MULTI_V6_V7=y
CONFIG_ARCH_MULTI_V7=y
CONFIG_ARCH_NR_GPIO=0
# CONFIG_ARCH_SELECT_MEMORY_MODEL is not set
# CONFIG_ARCH_SPARSEMEM_DEFAULT is not set
CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
CONFIG_ARCH_SUPPORTS_UPROBES=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARCH_USE_BUILTIN_BSWAP=y
CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
CONFIG_ARM=y
CONFIG_ARM_AMBA=y
CONFIG_ARM_ARCH_TIMER=y
CONFIG_ARM_ARCH_TIMER_EVTSTREAM=y
CONFIG_ARM_CPU_SUSPEND=y
CONFIG_ARM_HAS_SG_CHAIN=y
CONFIG_ARM_L1_CACHE_SHIFT=6
CONFIG_ARM_L1_CACHE_SHIFT_6=y
# CONFIG_ARM_LPAE is not set
CONFIG_ARM_PATCH_IDIV=y
CONFIG_ARM_PATCH_PHYS_VIRT=y
# CONFIG_ARM_SCPI_PROTOCOL is not set
# CONFIG_ARM_SP805_WATCHDOG is not set
CONFIG_ARM_THUMB=y
# CONFIG_ARM_THUMBEE is not set
CONFIG_ARM_TIMER_SP804=y
CONFIG_ARM_UNWIND=y
CONFIG_ARM_VIRT_EXT=y
CONFIG_AUTO_ZRELADDR=y
# CONFIG_BACKLIGHT_CLASS_DEVICE is not set
CONFIG_BACKLIGHT_LCD_SUPPORT=y
CONFIG_BCM2708_VCHIQ=y
CONFIG_BCM2708_VCMEM=y
# CONFIG_BCM2835_DEVGPIOMEM is not set
CONFIG_BCM2835_MBOX=y
# CONFIG_BCM2835_SMI is not set
CONFIG_BCM2835_TIMER=y
CONFIG_BCM2835_WDT=y
CONFIG_BCM_VCIO=y
CONFIG_BCM_VC_CMA=y
CONFIG_BCM_VC_SM=y
# CONFIG_BINFMT_FLAT is not set
# CONFIG_BLK_DEV_INITRD is not set
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=16
CONFIG_BLK_DEV_RAM_SIZE=4096
CONFIG_BLK_DEV_SD=y
CONFIG_BRCM_CHAR_DRIVERS=y
CONFIG_BUILD_BIN2C=y
# CONFIG_CACHE_L2X0 is not set
CONFIG_CLKDEV_LOOKUP=y
CONFIG_CLKSRC_MMIO=y
CONFIG_CLKSRC_OF=y
CONFIG_CLKSRC_PROBE=y
CONFIG_CLONE_BACKWARDS=y
CONFIG_CMA=y
CONFIG_CMA_ALIGNMENT=8
CONFIG_CMA_AREAS=7
# CONFIG_CMA_DEBUG is not set
# CONFIG_CMA_DEBUGFS is not set
CONFIG_CMA_SIZE_MBYTES=16
# CONFIG_CMA_SIZE_SEL_MAX is not set
CONFIG_CMA_SIZE_SEL_MBYTES=y
# CONFIG_CMA_SIZE_SEL_MIN is not set
# CONFIG_CMA_SIZE_SEL_PERCENTAGE is not set
CONFIG_COMMON_CLK=y
CONFIG_CONFIGFS_FS=y
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_CPU_32v6K=y
CONFIG_CPU_32v7=y
CONFIG_CPU_ABRT_EV7=y
# CONFIG_CPU_BPREDICT_DISABLE is not set
CONFIG_CPU_CACHE_V7=y
CONFIG_CPU_CACHE_VIPT=y
CONFIG_CPU_COPY_V6=y
CONFIG_CPU_CP15=y
CONFIG_CPU_CP15_MMU=y
CONFIG_CPU_HAS_ASID=y
# CONFIG_CPU_HOTPLUG_STATE_CONTROL is not set
# CONFIG_CPU_ICACHE_DISABLE is not set
CONFIG_CPU_IDLE=y
CONFIG_CPU_IDLE_GOV_LADDER=y
CONFIG_CPU_IDLE_GOV_MENU=y
CONFIG_CPU_PABRT_V7=y
CONFIG_CPU_PM=y
CONFIG_CPU_RMAP=y
CONFIG_CPU_TLB_V7=y
CONFIG_CPU_V7=y
CONFIG_CRC16=y
CONFIG_CRYPTO_AEAD=y
CONFIG_CRYPTO_AEAD2=y
CONFIG_CRYPTO_CRC32C=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_HASH2=y
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_MANAGER2=y
CONFIG_CRYPTO_NULL2=y
CONFIG_CRYPTO_RNG2=y
CONFIG_CRYPTO_WORKQUEUE=y
CONFIG_DCACHE_WORD_ACCESS=y
CONFIG_DEBUG_BUGVERBOSE=y
CONFIG_DEBUG_INFO=y
CONFIG_DEBUG_LL_INCLUDE="mach/debug-macro.S"
# CONFIG_DEBUG_UART_8250 is not set
# CONFIG_DEBUG_USER is not set
CONFIG_DEFAULT_CFQ=y
# CONFIG_DEFAULT_DEADLINE is not set
CONFIG_DEFAULT_IOSCHED="cfq"
CONFIG_DMADEVICES=y
CONFIG_DMA_BCM2708=y
CONFIG_DMA_BCM2835=y
CONFIG_DMA_CMA=y
CONFIG_DMA_ENGINE=y
CONFIG_DMA_OF=y
CONFIG_DMA_VIRTUAL_CHANNELS=y
CONFIG_DNOTIFY=y
CONFIG_DTC=y
CONFIG_DUMMY_CONSOLE=y
CONFIG_EDAC_ATOMIC_SCRUB=y
CONFIG_EDAC_SUPPORT=y
CONFIG_ENABLE_MUST_CHECK=y
CONFIG_EXT4_FS=y
CONFIG_EXT4_FS_POSIX_ACL=y
CONFIG_EXT4_FS_SECURITY=y
CONFIG_FB=y
CONFIG_FB_BCM2708=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_IMAGEBLIT=y
CONFIG_FB_CMDLINE=y
# CONFIG_FB_RPISENSE is not set
CONFIG_FIQ=y
CONFIG_FIRMWARE_IN_KERNEL=y
CONFIG_FIX_EARLYCON_MEM=y
# CONFIG_FONTS is not set
CONFIG_FONT_8x16=y
CONFIG_FONT_8x8=y
CONFIG_FONT_SUPPORT=y
# CONFIG_FPE_FASTFPE is not set
# CONFIG_FPE_NWFPE is not set
CONFIG_FRAMEBUFFER_CONSOLE=y
# CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY is not set
# CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set
CONFIG_FREEZER=y
CONFIG_FS_MBCACHE=y
CONFIG_FS_POSIX_ACL=y
CONFIG_GENERIC_ALLOCATOR=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_GENERIC_EARLY_IOREMAP=y
CONFIG_GENERIC_IDLE_POLL_SETUP=y
CONFIG_GENERIC_IO=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_IRQ_SHOW_LEVEL=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_GENERIC_PINCONF=y
CONFIG_GENERIC_SCHED_CLOCK=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
CONFIG_GPIOLIB=y
CONFIG_GPIO_BCM_VIRT=y
CONFIG_GPIO_SYSFS=y
CONFIG_HANDLE_DOMAIN_IRQ=y
CONFIG_HARDIRQS_SW_RESEND=y
CONFIG_HAS_DMA=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT_MAP=y
# CONFIG_HAVE_64BIT_ALIGNED_ACCESS is not set
CONFIG_HAVE_ARCH_BITREVERSE=y
CONFIG_HAVE_ARCH_JUMP_LABEL=y
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_HAVE_ARCH_PFN_VALID=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_ARM_ARCH_TIMER=y
CONFIG_HAVE_ARM_SMCCC=y
# CONFIG_HAVE_BOOTMEM_INFO_NODE is not set
CONFIG_HAVE_CBPF_JIT=y
CONFIG_HAVE_CC_STACKPROTECTOR=y
CONFIG_HAVE_CLK=y
CONFIG_HAVE_CLK_PREPARE=y
CONFIG_HAVE_CONTEXT_TRACKING=y
CONFIG_HAVE_C_RECORDMCOUNT=y
CONFIG_HAVE_DEBUG_KMEMLEAK=y
CONFIG_HAVE_DMA_API_DEBUG=y
CONFIG_HAVE_DMA_CONTIGUOUS=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_GENERIC_DMA_COHERENT=y
CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
CONFIG_HAVE_MEMBLOCK=y
CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
CONFIG_HAVE_NET_DSA=y
CONFIG_HAVE_OPROFILE=y
CONFIG_HAVE_OPTPROBES=y
CONFIG_HAVE_PERF_EVENTS=y
CONFIG_HAVE_PERF_REGS=y
CONFIG_HAVE_PERF_USER_STACK_DUMP=y
CONFIG_HAVE_PROC_CPU=y
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
CONFIG_HAVE_SMP=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_HAVE_UID16=y
CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
CONFIG_HOTPLUG_CPU=y
CONFIG_HW_CONSOLE=y
CONFIG_HZ_FIXED=0
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_INPUT=y
CONFIG_INPUT_MOUSEDEV=y
# CONFIG_INPUT_MOUSEDEV_PSAUX is not set
CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
CONFIG_IOMMU_HELPER=y
CONFIG_IOSCHED_CFQ=y
CONFIG_IRQCHIP=y
CONFIG_IRQ_DOMAIN=y
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_IRQ_WORK=y
CONFIG_JBD2=y
CONFIG_KERNEL_GZIP=y
# CONFIG_KERNEL_XZ is not set
# CONFIG_LCD_CLASS_DEVICE is not set
CONFIG_LEDS_GPIO=y
CONFIG_LEDS_TRIGGER_INPUT=y
CONFIG_LIBFDT=y
CONFIG_LOCK_SPIN_ON_OWNER=y
CONFIG_LOGO=y
CONFIG_LOGO_LINUX_CLUT224=y
# CONFIG_LOGO_LINUX_MONO is not set
# CONFIG_LOGO_LINUX_VGA16 is not set
CONFIG_LZO_COMPRESS=y
CONFIG_LZO_DECOMPRESS=y
CONFIG_MAC_PARTITION=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_MAILBOX=y
# CONFIG_MAILBOX_TEST is not set
CONFIG_MAX_RAW_DEVS=256
CONFIG_MEMORY_ISOLATION=y
CONFIG_MFD_SYSCON=y
CONFIG_MIGHT_HAVE_CACHE_L2X0=y
CONFIG_MIGHT_HAVE_PCI=y
CONFIG_MIGRATION=y
CONFIG_MMC=y
CONFIG_MMC_BCM2835=y
CONFIG_MMC_BCM2835_DMA=y
CONFIG_MMC_BCM2835_PIO_DMA_BARRIER=2
CONFIG_MMC_BCM2835_SDHOST=y
CONFIG_MMC_BLOCK=y
CONFIG_MMC_BLOCK_MINORS=32
CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_PLTFM=y
CONFIG_MODULES_USE_ELF_REL=y
# CONFIG_MTD is not set
CONFIG_MULTI_IRQ_HANDLER=y
CONFIG_MUTEX_SPIN_ON_OWNER=y
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_NEON=y
CONFIG_NET_FLOW_LIMIT=y
CONFIG_NLS=y
CONFIG_NLS_ASCII=y
CONFIG_NLS_DEFAULT="utf8"
CONFIG_NO_BOOTMEM=y
CONFIG_NO_HZ=y
CONFIG_NO_HZ_COMMON=y
CONFIG_NO_HZ_IDLE=y
CONFIG_NR_CPUS=4
CONFIG_OABI_COMPAT=y
CONFIG_OF=y
CONFIG_OF_ADDRESS=y
CONFIG_OF_CONFIGFS=y
CONFIG_OF_DYNAMIC=y
CONFIG_OF_EARLY_FLATTREE=y
CONFIG_OF_FLATTREE=y
CONFIG_OF_GPIO=y
CONFIG_OF_IRQ=y
CONFIG_OF_NET=y
CONFIG_OF_OVERLAY=y
CONFIG_OF_RESERVED_MEM=y
CONFIG_OF_RESOLVE=y
CONFIG_OLD_SIGACTION=y
CONFIG_OLD_SIGSUSPEND3=y
CONFIG_PADATA=y
CONFIG_PAGE_OFFSET=0x80000000
# CONFIG_PCI_DOMAINS_GENERIC is not set
# CONFIG_PCI_SYSCALL is not set
CONFIG_PERF_USE_VMALLOC=y
CONFIG_PGTABLE_LEVELS=2
CONFIG_PINCTRL=y
CONFIG_PINCTRL_BCM2835=y
# CONFIG_PL330_DMA is not set
CONFIG_PM=y
CONFIG_PM_CLK=y
# CONFIG_PM_DEBUG is not set
CONFIG_PM_GENERIC_DOMAINS=y
CONFIG_PM_GENERIC_DOMAINS_OF=y
CONFIG_PM_GENERIC_DOMAINS_SLEEP=y
CONFIG_PM_SLEEP=y
CONFIG_PM_SLEEP_SMP=y
CONFIG_POWER_SUPPLY=y
CONFIG_PRINTK_TIME=y
CONFIG_PROC_PAGE_MONITOR=y
CONFIG_PWM=y
CONFIG_PWM_BCM2835=y
CONFIG_PWM_SYSFS=y
CONFIG_RASPBERRYPI_FIRMWARE=y
CONFIG_RASPBERRYPI_POWER=y
CONFIG_RATIONAL=y
CONFIG_RAW_DRIVER=y
CONFIG_RCU_STALL_COMMON=y
CONFIG_REGMAP=y
CONFIG_REGMAP_MMIO=y
CONFIG_RFS_ACCEL=y
CONFIG_RPS=y
CONFIG_RWSEM_SPIN_ON_OWNER=y
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_SCHED_HRTICK=y
# CONFIG_SCHED_INFO is not set
CONFIG_SCSI=y
# CONFIG_SCSI_LOWLEVEL is not set
# CONFIG_SCSI_PROC_FS is not set
CONFIG_SERIAL_8250_BCM2835AUX=y
# CONFIG_SERIAL_8250_DMA is not set
CONFIG_SERIAL_8250_EXTENDED=y
CONFIG_SERIAL_8250_FSL=y
CONFIG_SERIAL_8250_NR_UARTS=1
CONFIG_SERIAL_8250_RUNTIME_UARTS=0
CONFIG_SERIAL_8250_SHARE_IRQ=y
# CONFIG_SERIAL_AMBA_PL010 is not set
CONFIG_SERIAL_AMBA_PL011=y
CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
CONFIG_SERIAL_OF_PLATFORM=y
CONFIG_SMP=y
CONFIG_SMP_ON_UP=y
CONFIG_SPARSE_IRQ=y
# CONFIG_SQUASHFS is not set
CONFIG_SRCU=y
# CONFIG_STRIP_ASM_SYMS is not set
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
CONFIG_SWIOTLB=y
CONFIG_SWP_EMULATE=y
CONFIG_SYS_SUPPORTS_APM_EMULATION=y
# CONFIG_TEXTSEARCH is not set
CONFIG_THERMAL=y
CONFIG_THERMAL_BCM2835=y
CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
CONFIG_THERMAL_GOV_STEP_WISE=y
CONFIG_THERMAL_OF=y
# CONFIG_THUMB2_KERNEL is not set
CONFIG_TICK_CPU_ACCOUNTING=y
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_TREE_RCU=y
CONFIG_UEVENT_HELPER_PATH=""
# CONFIG_UID16 is not set
CONFIG_UNCOMPRESS_INCLUDE="debug/uncompress.h"
CONFIG_USB=y
CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
CONFIG_USB_COMMON=y
CONFIG_USB_DWCOTG=y
# CONFIG_USB_EHCI_HCD is not set
CONFIG_USB_NET_DRIVERS=y
CONFIG_USB_NET_SMSC95XX=y
CONFIG_USB_STORAGE=y
CONFIG_USB_SUPPORT=y
CONFIG_USB_UAS=y
CONFIG_USB_USBNET=y
CONFIG_USE_OF=y
CONFIG_VECTORS_BASE=0xffff0000
CONFIG_VFP=y
CONFIG_VFPv3=y
CONFIG_VMSPLIT_2G=y
# CONFIG_VMSPLIT_3G is not set
CONFIG_VT=y
CONFIG_VT_CONSOLE=y
CONFIG_VT_CONSOLE_SLEEP=y
CONFIG_VT_HW_CONSOLE_BINDING=y
CONFIG_WATCHDOG_CORE=y
CONFIG_XPS=y
CONFIG_XZ_DEC_ARM=y
CONFIG_XZ_DEC_BCJ=y
CONFIG_ZBOOT_ROM_BSS=0x0
CONFIG_ZBOOT_ROM_TEXT=0x0

47
target/linux/brcm2708/patches-4.9/0001-smsx95xx-fix-crimes-against-truesize.patch Normal file
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@ -0,0 +1,47 @@
From 3df8aa3aa981f3c463d793b69fa23c5aab53fec2 Mon Sep 17 00:00:00 2001
From: Steve Glendinning <steve.glendinning@smsc.com>
Date: Thu, 19 Feb 2015 18:47:12 +0000
Subject: [PATCH] smsx95xx: fix crimes against truesize
smsc95xx is adjusting truesize when it shouldn't, and following a recent patch from Eric this is now triggering warnings.
This patch stops smsc95xx from changing truesize.
Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com>
---
drivers/net/usb/smsc95xx.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -82,6 +82,10 @@ static bool turbo_mode = true;
module_param(turbo_mode, bool, 0644);
MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction");
+static bool truesize_mode = false;
+module_param(truesize_mode, bool, 0644);
+MODULE_PARM_DESC(truesize_mode, "Report larger truesize value");
+
static int __must_check __smsc95xx_read_reg(struct usbnet *dev, u32 index,
u32 *data, int in_pm)
{
@@ -1951,7 +1955,8 @@ static int smsc95xx_rx_fixup(struct usbn
if (dev->net->features & NETIF_F_RXCSUM)
smsc95xx_rx_csum_offload(skb);
skb_trim(skb, skb->len - 4); /* remove fcs */
- skb->truesize = size + sizeof(struct sk_buff);
+ if (truesize_mode)
+ skb->truesize = size + sizeof(struct sk_buff);
return 1;
}
@@ -1969,7 +1974,8 @@ static int smsc95xx_rx_fixup(struct usbn
if (dev->net->features & NETIF_F_RXCSUM)
smsc95xx_rx_csum_offload(ax_skb);
skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */
- ax_skb->truesize = size + sizeof(struct sk_buff);
+ if (truesize_mode)
+ ax_skb->truesize = size + sizeof(struct sk_buff);
usbnet_skb_return(dev, ax_skb);
}

43
target/linux/brcm2708/patches-4.9/0002-smsc95xx-Experimental-Enable-turbo_mode-and-packetsi.patch Normal file
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@ -0,0 +1,43 @@
From aefca8fa1aefb12cc7ac1862b4c6e94c1ec9e74c Mon Sep 17 00:00:00 2001
From: Sam Nazarko <email@samnazarko.co.uk>
Date: Fri, 1 Apr 2016 17:27:21 +0100
Subject: [PATCH] smsc95xx: Experimental: Enable turbo_mode and packetsize=2560
by default
See: http://forum.kodi.tv/showthread.php?tid=285288
---
drivers/net/usb/smsc95xx.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -86,6 +86,10 @@ static bool truesize_mode = false;
module_param(truesize_mode, bool, 0644);
MODULE_PARM_DESC(truesize_mode, "Report larger truesize value");
+static int packetsize = 2560;
+module_param(packetsize, int, 0644);
+MODULE_PARM_DESC(packetsize, "Override the RX URB packet size");
+
static int __must_check __smsc95xx_read_reg(struct usbnet *dev, u32 index,
u32 *data, int in_pm)
{
@@ -1106,13 +1110,13 @@ static int smsc95xx_reset(struct usbnet
if (!turbo_mode) {
burst_cap = 0;
- dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE;
+ dev->rx_urb_size = packetsize ? packetsize : MAX_SINGLE_PACKET_SIZE;
} else if (dev->udev->speed == USB_SPEED_HIGH) {
- burst_cap = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
- dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE;
+ dev->rx_urb_size = packetsize ? packetsize : DEFAULT_HS_BURST_CAP_SIZE;
+ burst_cap = dev->rx_urb_size / HS_USB_PKT_SIZE;
} else {
- burst_cap = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
- dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE;
+ dev->rx_urb_size = packetsize ? packetsize : DEFAULT_FS_BURST_CAP_SIZE;
+ burst_cap = dev->rx_urb_size / FS_USB_PKT_SIZE;
}
netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n",

96
target/linux/brcm2708/patches-4.9/0003-Allow-mac-address-to-be-set-in-smsc95xx.patch Normal file
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@ -0,0 +1,96 @@
From a4774fe88b0a06562a7b6c5d3181f13e7444a3f0 Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Tue, 26 Mar 2013 17:26:38 +0000
Subject: [PATCH] Allow mac address to be set in smsc95xx
Signed-off-by: popcornmix <popcornmix@gmail.com>
---
drivers/net/usb/smsc95xx.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 56 insertions(+)
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -60,6 +60,7 @@
#define SUSPEND_SUSPEND3 (0x08)
#define SUSPEND_ALLMODES (SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \
SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3)
+#define MAC_ADDR_LEN (6)
#define CARRIER_CHECK_DELAY (2 * HZ)
@@ -90,6 +91,10 @@ static int packetsize = 2560;
module_param(packetsize, int, 0644);
MODULE_PARM_DESC(packetsize, "Override the RX URB packet size");
+static char *macaddr = ":";
+module_param(macaddr, charp, 0);
+MODULE_PARM_DESC(macaddr, "MAC address");
+
static int __must_check __smsc95xx_read_reg(struct usbnet *dev, u32 index,
u32 *data, int in_pm)
{
@@ -918,6 +923,53 @@ static int smsc95xx_ioctl(struct net_dev
return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
}
+/* Check the macaddr module parameter for a MAC address */
+static int smsc95xx_is_macaddr_param(struct usbnet *dev, u8 *dev_mac)
+{
+ int i, j, got_num, num;
+ u8 mtbl[MAC_ADDR_LEN];
+
+ if (macaddr[0] == ':')
+ return 0;
+
+ i = 0;
+ j = 0;
+ num = 0;
+ got_num = 0;
+ while (j < MAC_ADDR_LEN) {
+ if (macaddr[i] && macaddr[i] != ':') {
+ got_num++;
+ if ('0' <= macaddr[i] && macaddr[i] <= '9')
+ num = num * 16 + macaddr[i] - '0';
+ else if ('A' <= macaddr[i] && macaddr[i] <= 'F')
+ num = num * 16 + 10 + macaddr[i] - 'A';
+ else if ('a' <= macaddr[i] && macaddr[i] <= 'f')
+ num = num * 16 + 10 + macaddr[i] - 'a';
+ else
+ break;
+ i++;
+ } else if (got_num == 2) {
+ mtbl[j++] = (u8) num;
+ num = 0;
+ got_num = 0;
+ i++;
+ } else {
+ break;
+ }
+ }
+
+ if (j == MAC_ADDR_LEN) {
+ netif_dbg(dev, ifup, dev->net, "Overriding MAC address with: "
+ "%02x:%02x:%02x:%02x:%02x:%02x\n", mtbl[0], mtbl[1], mtbl[2],
+ mtbl[3], mtbl[4], mtbl[5]);
+ for (i = 0; i < MAC_ADDR_LEN; i++)
+ dev_mac[i] = mtbl[i];
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
static void smsc95xx_init_mac_address(struct usbnet *dev)
{
const u8 *mac_addr;
@@ -939,6 +991,10 @@ static void smsc95xx_init_mac_address(st
}
}
+ /* Check module parameters */
+ if (smsc95xx_is_macaddr_param(dev, dev->net->dev_addr))
+ return;
+
/* no useful static MAC address found. generate a random one */
eth_hw_addr_random(dev->net);
netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n");

27
target/linux/brcm2708/patches-4.9/0004-Protect-__release_resource-against-resources-without.patch Normal file
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@ -0,0 +1,27 @@
From 0b4480a51b80954e34605c9bf42947d97e37d1c3 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Fri, 13 Mar 2015 12:43:36 +0000
Subject: [PATCH] Protect __release_resource against resources without parents
Without this patch, removing a device tree overlay can crash here.
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
kernel/resource.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -246,6 +246,12 @@ static int __release_resource(struct res
{
struct resource *tmp, **p, *chd;
+ if (!old->parent) {
+ WARN(old->sibling, "sibling but no parent");
+ if (old->sibling)
+ return -EINVAL;
+ return 0;
+ }
p = &old->parent->child;
for (;;) {
tmp = *p;

25
target/linux/brcm2708/patches-4.9/0005-mm-Remove-the-PFN-busy-warning.patch Normal file
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@ -0,0 +1,25 @@
From 029f649c29d81583b412cb6ff5792a3cf9102a95 Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Thu, 18 Dec 2014 16:07:15 -0800
Subject: [PATCH] mm: Remove the PFN busy warning
See commit dae803e165a11bc88ca8dbc07a11077caf97bbcb -- the warning is
expected sometimes when using CMA. However, that commit still spams
my kernel log with these warnings.
Signed-off-by: Eric Anholt <eric@anholt.net>
---
mm/page_alloc.c | 2 --
1 file changed, 2 deletions(-)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -7323,8 +7323,6 @@ int alloc_contig_range(unsigned long sta
/* Make sure the range is really isolated. */
if (test_pages_isolated(outer_start, end, false)) {
- pr_info("%s: [%lx, %lx) PFNs busy\n",
- __func__, outer_start, end);
ret = -EBUSY;
goto done;
}

26
target/linux/brcm2708/patches-4.9/0006-irq-bcm2836-Prevent-spurious-interrupts-and-trap-the.patch Normal file
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@ -0,0 +1,26 @@
From 3fad09910dafeb93a351aefa90ca4fd490f68c84 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Fri, 4 Dec 2015 17:41:50 +0000
Subject: [PATCH] irq-bcm2836: Prevent spurious interrupts, and trap them early
The old arch-specific IRQ macros included a dsb to ensure the
write to clear the mailbox interrupt completed before returning
from the interrupt. The BCM2836 irqchip driver needs the same
precaution to avoid spurious interrupts.
Spurious interrupts are still possible for other reasons,
though, so trap them early.
---
drivers/irqchip/irq-bcm2836.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/irqchip/irq-bcm2836.c
+++ b/drivers/irqchip/irq-bcm2836.c
@@ -175,6 +175,7 @@ __exception_irq_entry bcm2836_arm_irqchi
u32 ipi = ffs(mbox_val) - 1;
writel(1 << ipi, mailbox0);
+ dsb(sy);
handle_IPI(ipi, regs);
#endif
} else if (stat) {

127
target/linux/brcm2708/patches-4.9/0007-irqchip-bcm2835-Add-FIQ-support.patch Normal file
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@ -0,0 +1,127 @@
From 0c9c73fafac86e96a1d1fb59b13aac0ce6d70692 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
Date: Fri, 12 Jun 2015 19:01:05 +0200
Subject: [PATCH] irqchip: bcm2835: Add FIQ support
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Add a duplicate irq range with an offset on the hwirq's so the
driver can detect that enable_fiq() is used.
Tested with downstream dwc_otg USB controller driver.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
---
arch/arm/mach-bcm/Kconfig | 1 +
drivers/irqchip/irq-bcm2835.c | 51 ++++++++++++++++++++++++++++++++++++++-----
2 files changed, 47 insertions(+), 5 deletions(-)
--- a/arch/arm/mach-bcm/Kconfig
+++ b/arch/arm/mach-bcm/Kconfig
@@ -152,6 +152,7 @@ config ARCH_BCM2835
select HAVE_ARM_ARCH_TIMER if ARCH_MULTI_V7
select CLKSRC_OF
select BCM2835_TIMER
+ select FIQ
select PINCTRL
select PINCTRL_BCM2835
help
--- a/drivers/irqchip/irq-bcm2835.c
+++ b/drivers/irqchip/irq-bcm2835.c
@@ -54,7 +54,7 @@
#include <asm/exception.h>
/* Put the bank and irq (32 bits) into the hwirq */
-#define MAKE_HWIRQ(b, n) ((b << 5) | (n))
+#define MAKE_HWIRQ(b, n) (((b) << 5) | (n))
#define HWIRQ_BANK(i) (i >> 5)
#define HWIRQ_BIT(i) BIT(i & 0x1f)
@@ -70,9 +70,13 @@
| SHORTCUT1_MASK | SHORTCUT2_MASK)
#define REG_FIQ_CONTROL 0x0c
+#define REG_FIQ_ENABLE 0x80
+#define REG_FIQ_DISABLE 0
#define NR_BANKS 3
#define IRQS_PER_BANK 32
+#define NUMBER_IRQS MAKE_HWIRQ(NR_BANKS, 0)
+#define FIQ_START (NR_IRQS_BANK0 + MAKE_HWIRQ(NR_BANKS - 1, 0))
static const int reg_pending[] __initconst = { 0x00, 0x04, 0x08 };
static const int reg_enable[] __initconst = { 0x18, 0x10, 0x14 };
@@ -97,14 +101,38 @@ static void __exception_irq_entry bcm283
struct pt_regs *regs);
static void bcm2836_chained_handle_irq(struct irq_desc *desc);
+static inline unsigned int hwirq_to_fiq(unsigned long hwirq)
+{
+ hwirq -= NUMBER_IRQS;
+ /*
+ * The hwirq numbering used in this driver is:
+ * BASE (0-7) GPU1 (32-63) GPU2 (64-95).
+ * This differ from the one used in the FIQ register:
+ * GPU1 (0-31) GPU2 (32-63) BASE (64-71)
+ */
+ if (hwirq >= 32)
+ return hwirq - 32;
+
+ return hwirq + 64;
+}
+
static void armctrl_mask_irq(struct irq_data *d)
{
- writel_relaxed(HWIRQ_BIT(d->hwirq), intc.disable[HWIRQ_BANK(d->hwirq)]);
+ if (d->hwirq >= NUMBER_IRQS)
+ writel_relaxed(REG_FIQ_DISABLE, intc.base + REG_FIQ_CONTROL);
+ else
+ writel_relaxed(HWIRQ_BIT(d->hwirq),
+ intc.disable[HWIRQ_BANK(d->hwirq)]);
}
static void armctrl_unmask_irq(struct irq_data *d)
{
- writel_relaxed(HWIRQ_BIT(d->hwirq), intc.enable[HWIRQ_BANK(d->hwirq)]);
+ if (d->hwirq >= NUMBER_IRQS)
+ writel_relaxed(REG_FIQ_ENABLE | hwirq_to_fiq(d->hwirq),
+ intc.base + REG_FIQ_CONTROL);
+ else
+ writel_relaxed(HWIRQ_BIT(d->hwirq),
+ intc.enable[HWIRQ_BANK(d->hwirq)]);
}
static struct irq_chip armctrl_chip = {
@@ -150,8 +178,9 @@ static int __init armctrl_of_init(struct
panic("%s: unable to map IC registers\n",
node->full_name);
- intc.domain = irq_domain_add_linear(node, MAKE_HWIRQ(NR_BANKS, 0),
- &armctrl_ops, NULL);
+ intc.base = base;
+ intc.domain = irq_domain_add_linear(node, NUMBER_IRQS * 2,
+ &armctrl_ops, NULL);
if (!intc.domain)
panic("%s: unable to create IRQ domain\n", node->full_name);
@@ -181,6 +210,18 @@ static int __init armctrl_of_init(struct
set_handle_irq(bcm2835_handle_irq);
}
+ /* Make a duplicate irq range which is used to enable FIQ */
+ for (b = 0; b < NR_BANKS; b++) {
+ for (i = 0; i < bank_irqs[b]; i++) {
+ irq = irq_create_mapping(intc.domain,
+ MAKE_HWIRQ(b, i) + NUMBER_IRQS);
+ BUG_ON(irq <= 0);
+ irq_set_chip(irq, &armctrl_chip);
+ set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+ }
+ }
+ init_FIQ(FIQ_START);
+
return 0;
}

99
target/linux/brcm2708/patches-4.9/0008-irqchip-irq-bcm2835-Add-2836-FIQ-support.patch Normal file
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@ -0,0 +1,99 @@
From 3b662c4466e336bab7ebb438b65bd5487d30305d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
Date: Fri, 23 Oct 2015 16:26:55 +0200
Subject: [PATCH] irqchip: irq-bcm2835: Add 2836 FIQ support
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
---
drivers/irqchip/irq-bcm2835.c | 43 +++++++++++++++++++++++++++++++++++++++++--
1 file changed, 41 insertions(+), 2 deletions(-)
--- a/drivers/irqchip/irq-bcm2835.c
+++ b/drivers/irqchip/irq-bcm2835.c
@@ -50,8 +50,11 @@
#include <linux/of_irq.h>
#include <linux/irqchip.h>
#include <linux/irqdomain.h>
+#include <linux/mfd/syscon.h>
+#include <linux/regmap.h>
#include <asm/exception.h>
+#include <asm/mach/irq.h>
/* Put the bank and irq (32 bits) into the hwirq */
#define MAKE_HWIRQ(b, n) (((b) << 5) | (n))
@@ -69,6 +72,9 @@
#define BANK0_VALID_MASK (BANK0_HWIRQ_MASK | BANK1_HWIRQ | BANK2_HWIRQ \
| SHORTCUT1_MASK | SHORTCUT2_MASK)
+#undef ARM_LOCAL_GPU_INT_ROUTING
+#define ARM_LOCAL_GPU_INT_ROUTING 0x0c
+
#define REG_FIQ_CONTROL 0x0c
#define REG_FIQ_ENABLE 0x80
#define REG_FIQ_DISABLE 0
@@ -94,6 +100,7 @@ struct armctrl_ic {
void __iomem *enable[NR_BANKS];
void __iomem *disable[NR_BANKS];
struct irq_domain *domain;
+ struct regmap *local_regmap;
};
static struct armctrl_ic intc __read_mostly;
@@ -127,12 +134,35 @@ static void armctrl_mask_irq(struct irq_
static void armctrl_unmask_irq(struct irq_data *d)
{
- if (d->hwirq >= NUMBER_IRQS)
+ if (d->hwirq >= NUMBER_IRQS) {
+ if (num_online_cpus() > 1) {
+ unsigned int data;
+ int ret;
+
+ if (!intc.local_regmap) {
+ pr_err("FIQ is disabled due to missing regmap\n");
+ return;
+ }
+
+ ret = regmap_read(intc.local_regmap,
+ ARM_LOCAL_GPU_INT_ROUTING, &data);
+ if (ret) {
+ pr_err("Failed to read int routing %d\n", ret);
+ return;
+ }
+
+ data &= ~0xc;
+ data |= (1 << 2);
+ regmap_write(intc.local_regmap,
+ ARM_LOCAL_GPU_INT_ROUTING, data);
+ }
+
writel_relaxed(REG_FIQ_ENABLE | hwirq_to_fiq(d->hwirq),
intc.base + REG_FIQ_CONTROL);
- else
+ } else {
writel_relaxed(HWIRQ_BIT(d->hwirq),
intc.enable[HWIRQ_BANK(d->hwirq)]);
+ }
}
static struct irq_chip armctrl_chip = {
@@ -210,6 +240,15 @@ static int __init armctrl_of_init(struct
set_handle_irq(bcm2835_handle_irq);
}
+ if (is_2836) {
+ intc.local_regmap =
+ syscon_regmap_lookup_by_compatible("brcm,bcm2836-arm-local");
+ if (IS_ERR(intc.local_regmap)) {
+ pr_err("Failed to get local register map. FIQ is disabled for cpus > 1\n");
+ intc.local_regmap = NULL;
+ }
+ }
+
/* Make a duplicate irq range which is used to enable FIQ */
for (b = 0; b < NR_BANKS; b++) {
for (i = 0; i < bank_irqs[b]; i++) {

20
target/linux/brcm2708/patches-4.9/0009-spidev-Add-spidev-compatible-string-to-silence-warni.patch Normal file
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@ -0,0 +1,20 @@
From 21a313f8517a1be2b0962710ffe9ad94e7334ba1 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Tue, 14 Jul 2015 10:26:09 +0100
Subject: [PATCH] spidev: Add "spidev" compatible string to silence warning
See: https://github.com/raspberrypi/linux/issues/1054
---
drivers/spi/spidev.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -697,6 +697,7 @@ static const struct of_device_id spidev_
{ .compatible = "rohm,dh2228fv" },
{ .compatible = "lineartechnology,ltc2488" },
{ .compatible = "siliconlabs,si3210" },
+ { .compatible = "spidev" },
{},
};
MODULE_DEVICE_TABLE(of, spidev_dt_ids);

20
target/linux/brcm2708/patches-4.9/0010-serial-8250-Don-t-crash-when-nr_uarts-is-0.patch Normal file
View File

@ -0,0 +1,20 @@
From 0059a02a50c6d01a399024cad56ec5254c645fd0 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Tue, 30 Jun 2015 14:12:42 +0100
Subject: [PATCH] serial: 8250: Don't crash when nr_uarts is 0
---
drivers/tty/serial/8250/8250_core.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/tty/serial/8250/8250_core.c
+++ b/drivers/tty/serial/8250/8250_core.c
@@ -509,6 +509,8 @@ static void __init serial8250_isa_init_p
if (nr_uarts > UART_NR)
nr_uarts = UART_NR;
+ if (!nr_uarts)
+ return;
for (i = 0; i < nr_uarts; i++) {
struct uart_8250_port *up = &serial8250_ports[i];

21
target/linux/brcm2708/patches-4.9/0011-pinctrl-bcm2835-Set-base-to-0-give-expected-gpio-num.patch Normal file
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@ -0,0 +1,21 @@
From c9d0e1314de3cde0674ef5a2c8688b1dc10b2091 Mon Sep 17 00:00:00 2001
From: notro <notro@tronnes.org>
Date: Thu, 10 Jul 2014 13:59:47 +0200
Subject: [PATCH] pinctrl-bcm2835: Set base to 0 give expected gpio numbering
Signed-off-by: Noralf Tronnes <notro@tronnes.org>
---
drivers/pinctrl/bcm/pinctrl-bcm2835.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c
+++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
@@ -386,7 +386,7 @@ static struct gpio_chip bcm2835_gpio_chi
.get = bcm2835_gpio_get,
.set = bcm2835_gpio_set,
.to_irq = bcm2835_gpio_to_irq,
- .base = -1,
+ .base = 0,
.ngpio = BCM2835_NUM_GPIOS,
.can_sleep = false,
};

146
target/linux/brcm2708/patches-4.9/0012-pinctrl-bcm2835-Fix-interrupt-handling-for-GPIOs-28-.patch Normal file
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@ -0,0 +1,146 @@
From c7ab4eb8e79ceaa923a7c9f4e14dc085a1934a29 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Tue, 24 Feb 2015 13:40:50 +0000
Subject: [PATCH] pinctrl-bcm2835: Fix interrupt handling for GPIOs 28-31 and
46-53
Contrary to the documentation, the BCM2835 GPIO controller actually has
four interrupt lines - one each for the three IRQ groups and one common. Rather
confusingly, the GPIO interrupt groups don't correspond directly with the GPIO
control banks. Instead, GPIOs 0-27 generate IRQ GPIO0, 28-45 GPIO1 and
46-53 GPIO2.
Awkwardly, the GPIOS for IRQ GPIO1 straddle two 32-entry GPIO banks, so it is
cleaner to split out a function to process the interrupts for a single GPIO
bank.
This bug has only just been observed because GPIOs above 27 can only be
accessed on an old Raspberry Pi with the optional P5 header fitted, where
the pins are often used for I2S instead.
---
drivers/pinctrl/bcm/pinctrl-bcm2835.c | 51 ++++++++++++++++++++++++++---------
1 file changed, 39 insertions(+), 12 deletions(-)
--- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c
+++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
@@ -47,6 +47,7 @@
#define MODULE_NAME "pinctrl-bcm2835"
#define BCM2835_NUM_GPIOS 54
#define BCM2835_NUM_BANKS 2
+#define BCM2835_NUM_IRQS 3
#define BCM2835_PIN_BITMAP_SZ \
DIV_ROUND_UP(BCM2835_NUM_GPIOS, sizeof(unsigned long) * 8)
@@ -88,13 +89,13 @@ enum bcm2835_pinconf_pull {
struct bcm2835_gpio_irqdata {
struct bcm2835_pinctrl *pc;
- int bank;
+ int irqgroup;
};
struct bcm2835_pinctrl {
struct device *dev;
void __iomem *base;
- int irq[BCM2835_NUM_BANKS];
+ int irq[BCM2835_NUM_IRQS];
/* note: locking assumes each bank will have its own unsigned long */
unsigned long enabled_irq_map[BCM2835_NUM_BANKS];
@@ -105,7 +106,7 @@ struct bcm2835_pinctrl {
struct gpio_chip gpio_chip;
struct pinctrl_gpio_range gpio_range;
- struct bcm2835_gpio_irqdata irq_data[BCM2835_NUM_BANKS];
+ struct bcm2835_gpio_irqdata irq_data[BCM2835_NUM_IRQS];
spinlock_t irq_lock[BCM2835_NUM_BANKS];
};
@@ -391,17 +392,16 @@ static struct gpio_chip bcm2835_gpio_chi
.can_sleep = false,
};
-static irqreturn_t bcm2835_gpio_irq_handler(int irq, void *dev_id)
+static int bcm2835_gpio_irq_handle_bank(struct bcm2835_pinctrl *pc,
+ unsigned int bank, u32 mask)
{
- struct bcm2835_gpio_irqdata *irqdata = dev_id;
- struct bcm2835_pinctrl *pc = irqdata->pc;
- int bank = irqdata->bank;
unsigned long events;
unsigned offset;
unsigned gpio;
unsigned int type;
events = bcm2835_gpio_rd(pc, GPEDS0 + bank * 4);
+ events &= mask;
events &= pc->enabled_irq_map[bank];
for_each_set_bit(offset, &events, 32) {
gpio = (32 * bank) + offset;
@@ -409,7 +409,30 @@ static irqreturn_t bcm2835_gpio_irq_hand
generic_handle_irq(irq_linear_revmap(pc->irq_domain, gpio));
}
- return events ? IRQ_HANDLED : IRQ_NONE;
+
+ return (events != 0);
+}
+
+static irqreturn_t bcm2835_gpio_irq_handler(int irq, void *dev_id)
+{
+ struct bcm2835_gpio_irqdata *irqdata = dev_id;
+ struct bcm2835_pinctrl *pc = irqdata->pc;
+ int handled = 0;
+
+ switch (irqdata->irqgroup) {
+ case 0: /* IRQ0 covers GPIOs 0-27 */
+ handled = bcm2835_gpio_irq_handle_bank(pc, 0, 0x0fffffff);
+ break;
+ case 1: /* IRQ1 covers GPIOs 28-45 */
+ handled = bcm2835_gpio_irq_handle_bank(pc, 0, 0xf0000000) |
+ bcm2835_gpio_irq_handle_bank(pc, 1, 0x00003fff);
+ break;
+ case 2: /* IRQ2 covers GPIOs 46-53 */
+ handled = bcm2835_gpio_irq_handle_bank(pc, 1, 0x003fc000);
+ break;
+ }
+
+ return handled ? IRQ_HANDLED : IRQ_NONE;
}
static inline void __bcm2835_gpio_irq_config(struct bcm2835_pinctrl *pc,
@@ -998,8 +1021,6 @@ static int bcm2835_pinctrl_probe(struct
for (i = 0; i < BCM2835_NUM_BANKS; i++) {
unsigned long events;
unsigned offset;
- int len;
- char *name;
/* clear event detection flags */
bcm2835_gpio_wr(pc, GPREN0 + i * 4, 0);
@@ -1014,10 +1035,15 @@ static int bcm2835_pinctrl_probe(struct
for_each_set_bit(offset, &events, 32)
bcm2835_gpio_wr(pc, GPEDS0 + i * 4, BIT(offset));
+ spin_lock_init(&pc->irq_lock[i]);
+ }
+
+ for (i = 0; i < BCM2835_NUM_IRQS; i++) {
+ int len;
+ char *name;
pc->irq[i] = irq_of_parse_and_map(np, i);
pc->irq_data[i].pc = pc;
- pc->irq_data[i].bank = i;
- spin_lock_init(&pc->irq_lock[i]);
+ pc->irq_data[i].irqgroup = i;
len = strlen(dev_name(pc->dev)) + 16;
name = devm_kzalloc(pc->dev, len, GFP_KERNEL);
@@ -1074,6 +1100,7 @@ static struct platform_driver bcm2835_pi
.remove = bcm2835_pinctrl_remove,
.driver = {
.name = MODULE_NAME,
+ .owner = THIS_MODULE,
.of_match_table = bcm2835_pinctrl_match,
},
};

27
target/linux/brcm2708/patches-4.9/0013-pinctrl-bcm2835-Only-request-the-interrupts-listed-i.patch Normal file
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@ -0,0 +1,27 @@
From a5a46d240c25576b901f0afa76575c1ab4a1469a Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Thu, 26 Feb 2015 09:58:22 +0000
Subject: [PATCH] pinctrl-bcm2835: Only request the interrupts listed in the
DTB
Although the GPIO controller can generate three interrupts (four counting
the common one), the device tree files currently only specify two. In the
absence of the third, simply don't register that interrupt (as opposed to
registering 0), which has the effect of making it impossible to generate
interrupts for GPIOs 46-53 which, since they share pins with the SD card
interface, is unlikely to be a problem.
---
drivers/pinctrl/bcm/pinctrl-bcm2835.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c
+++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
@@ -1042,6 +1042,8 @@ static int bcm2835_pinctrl_probe(struct
int len;
char *name;
pc->irq[i] = irq_of_parse_and_map(np, i);
+ if (pc->irq[i] == 0)
+ break;
pc->irq_data[i].pc = pc;
pc->irq_data[i].irqgroup = i;

41
target/linux/brcm2708/patches-4.9/0014-pinctrl-bcm2835-Return-pins-to-inputs-when-freed.patch Normal file
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@ -0,0 +1,41 @@
From 403ea1795165839348e5953b80ec4da31b639f8e Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Fri, 6 May 2016 12:32:47 +0100
Subject: [PATCH] pinctrl-bcm2835: Return pins to inputs when freed
When dynamically unloading overlays, it is important that freed pins are
restored to being inputs to prevent functions from being enabled in
multiple places at once.
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
drivers/pinctrl/bcm/pinctrl-bcm2835.c | 11 +++++++++++
1 file changed, 11 insertions(+)
--- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c
+++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
@@ -844,6 +844,16 @@ static const struct pinctrl_ops bcm2835_
.dt_free_map = bcm2835_pctl_dt_free_map,
};
+static int bcm2835_pmx_free(struct pinctrl_dev *pctldev,
+ unsigned offset)
+{
+ struct bcm2835_pinctrl *pc = pinctrl_dev_get_drvdata(pctldev);
+
+ /* disable by setting to GPIO_IN */
+ bcm2835_pinctrl_fsel_set(pc, offset, BCM2835_FSEL_GPIO_IN);
+ return 0;
+}
+
static int bcm2835_pmx_get_functions_count(struct pinctrl_dev *pctldev)
{
return BCM2835_FSEL_COUNT;
@@ -903,6 +913,7 @@ static int bcm2835_pmx_gpio_set_directio
}
static const struct pinmux_ops bcm2835_pmx_ops = {
+ .free = bcm2835_pmx_free,
.get_functions_count = bcm2835_pmx_get_functions_count,
.get_function_name = bcm2835_pmx_get_function_name,
.get_function_groups = bcm2835_pmx_get_function_groups,

80
target/linux/brcm2708/patches-4.9/0015-spi-bcm2835-Support-pin-groups-other-than-7-11.patch Normal file
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@ -0,0 +1,80 @@
From d4a8fe93bffd4cab698a2630ee7125da93d55d8a Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Wed, 24 Jun 2015 14:10:44 +0100
Subject: [PATCH] spi-bcm2835: Support pin groups other than 7-11
The spi-bcm2835 driver automatically uses GPIO chip-selects due to
some unreliability of the native ones. In doing so it chooses the
same pins as the native chip-selects would use, but the existing
code always uses pins 7 and 8, wherever the SPI function is mapped.
Search the pinctrl group assigned to the driver for pins that
correspond to native chip-selects, and use those for GPIO chip-
selects.
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
drivers/spi/spi-bcm2835.c | 45 +++++++++++++++++++++++++++++++++++++--------
1 file changed, 37 insertions(+), 8 deletions(-)
--- a/drivers/spi/spi-bcm2835.c
+++ b/drivers/spi/spi-bcm2835.c
@@ -688,6 +688,8 @@ static int bcm2835_spi_setup(struct spi_
{
int err;
struct gpio_chip *chip;
+ struct device_node *pins;
+ u32 pingroup_index;
/*
* sanity checking the native-chipselects
*/
@@ -704,15 +706,42 @@ static int bcm2835_spi_setup(struct spi_
"setup: only two native chip-selects are supported\n");
return -EINVAL;
}
- /* now translate native cs to GPIO */
- /* get the gpio chip for the base */
- chip = gpiochip_find("pinctrl-bcm2835", chip_match_name);
- if (!chip)
- return 0;
+ /* now translate native cs to GPIO */
+ /* first look for chip select pins in the devices pin groups */
+ for (pingroup_index = 0;
+ (pins = of_parse_phandle(spi->master->dev.of_node,
+ "pinctrl-0",
+ pingroup_index)) != 0;
+ pingroup_index++) {
+ u32 pin;
+ u32 pin_index;
+ for (pin_index = 0;
+ of_property_read_u32_index(pins,
+ "brcm,pins",
+ pin_index,
+ &pin) == 0;
+ pin_index++) {
+ if (((spi->chip_select == 0) &&
+ ((pin == 8) || (pin == 36) || (pin == 46))) ||
+ ((spi->chip_select == 1) &&
+ ((pin == 7) || (pin == 35)))) {
+ spi->cs_gpio = pin;
+ break;
+ }
+ }
+ of_node_put(pins);
+ }
+ /* if that fails, assume GPIOs 7-11 are used */
+ if (!gpio_is_valid(spi->cs_gpio) ) {
+ /* get the gpio chip for the base */
+ chip = gpiochip_find("pinctrl-bcm2835", chip_match_name);
+ if (!chip)
+ return 0;
- /* and calculate the real CS */
- spi->cs_gpio = chip->base + 8 - spi->chip_select;
+ /* and calculate the real CS */
+ spi->cs_gpio = chip->base + 8 - spi->chip_select;
+ }
/* and set up the "mode" and level */
dev_info(&spi->dev, "setting up native-CS%i as GPIO %i\n",

34
target/linux/brcm2708/patches-4.9/0016-spi-bcm2835-Disable-forced-software-CS.patch Normal file
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@ -0,0 +1,34 @@
From fa79e1013557f418119bd9dd2c0cf4c51eb4c093 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Fri, 1 Jul 2016 22:09:24 +0100
Subject: [PATCH] spi-bcm2835: Disable forced software CS
Select software CS in bcm2708_common.dtsi, and disable the automatic
conversion in the driver to allow hardware CS to be re-enabled with an
overlay.
See: https://github.com/raspberrypi/linux/issues/1547
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
drivers/spi/spi-bcm2835.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/spi/spi-bcm2835.c
+++ b/drivers/spi/spi-bcm2835.c
@@ -707,6 +707,7 @@ static int bcm2835_spi_setup(struct spi_
return -EINVAL;
}
+#if 0
/* now translate native cs to GPIO */
/* first look for chip select pins in the devices pin groups */
for (pingroup_index = 0;
@@ -756,6 +757,7 @@ static int bcm2835_spi_setup(struct spi_
spi->chip_select, spi->cs_gpio, err);
return err;
}
+#endif
return 0;
}

88
target/linux/brcm2708/patches-4.9/0017-spi-bcm2835-Remove-unused-code.patch Normal file
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@ -0,0 +1,88 @@
From 85bb42acd1c5a045d372d187c26b77c6bf1b617a Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Tue, 8 Nov 2016 21:35:38 +0000
Subject: [PATCH] spi-bcm2835: Remove unused code
---
drivers/spi/spi-bcm2835.c | 61 -----------------------------------------------
1 file changed, 61 deletions(-)
--- a/drivers/spi/spi-bcm2835.c
+++ b/drivers/spi/spi-bcm2835.c
@@ -679,17 +679,8 @@ static void bcm2835_spi_set_cs(struct sp
bcm2835_wr(bs, BCM2835_SPI_CS, cs);
}
-static int chip_match_name(struct gpio_chip *chip, void *data)
-{
- return !strcmp(chip->label, data);
-}
-
static int bcm2835_spi_setup(struct spi_device *spi)
{
- int err;
- struct gpio_chip *chip;
- struct device_node *pins;
- u32 pingroup_index;
/*
* sanity checking the native-chipselects
*/
@@ -707,58 +698,6 @@ static int bcm2835_spi_setup(struct spi_
return -EINVAL;
}
-#if 0
- /* now translate native cs to GPIO */
- /* first look for chip select pins in the devices pin groups */
- for (pingroup_index = 0;
- (pins = of_parse_phandle(spi->master->dev.of_node,
- "pinctrl-0",
- pingroup_index)) != 0;
- pingroup_index++) {
- u32 pin;
- u32 pin_index;
- for (pin_index = 0;
- of_property_read_u32_index(pins,
- "brcm,pins",
- pin_index,
- &pin) == 0;
- pin_index++) {
- if (((spi->chip_select == 0) &&
- ((pin == 8) || (pin == 36) || (pin == 46))) ||
- ((spi->chip_select == 1) &&
- ((pin == 7) || (pin == 35)))) {
- spi->cs_gpio = pin;
- break;
- }
- }
- of_node_put(pins);
- }
- /* if that fails, assume GPIOs 7-11 are used */
- if (!gpio_is_valid(spi->cs_gpio) ) {
- /* get the gpio chip for the base */
- chip = gpiochip_find("pinctrl-bcm2835", chip_match_name);
- if (!chip)
- return 0;
-
- /* and calculate the real CS */
- spi->cs_gpio = chip->base + 8 - spi->chip_select;
- }
-
- /* and set up the "mode" and level */
- dev_info(&spi->dev, "setting up native-CS%i as GPIO %i\n",
- spi->chip_select, spi->cs_gpio);
-
- /* set up GPIO as output and pull to the correct level */
- err = gpio_direction_output(spi->cs_gpio,
- (spi->mode & SPI_CS_HIGH) ? 0 : 1);
- if (err) {
- dev_err(&spi->dev,
- "could not set CS%i gpio %i as output: %i",
- spi->chip_select, spi->cs_gpio, err);
- return err;
- }
-#endif
-
return 0;
}

53
target/linux/brcm2708/patches-4.9/0018-ARM-bcm2835-Set-Serial-number-and-Revision.patch Normal file
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@ -0,0 +1,53 @@
From c33ee72bce07fc83e4797ebea1bce97c0b301ba2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
Date: Wed, 3 Jun 2015 12:26:13 +0200
Subject: [PATCH] ARM: bcm2835: Set Serial number and Revision
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
The VideoCore bootloader passes in Serial number and
Revision number through Device Tree. Make these available to
userspace through /proc/cpuinfo.
Mainline status:
There is a commit in linux-next that standardize passing the serial
number through Device Tree (string: /serial-number):
ARM: 8355/1: arch: Show the serial number from devicetree in cpuinfo
There was an attempt to do the same with the revision number, but it
didn't get in:
[PATCH v2 1/2] arm: devtree: Set system_rev from DT revision
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
---
arch/arm/mach-bcm/board_bcm2835.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--- a/arch/arm/mach-bcm/board_bcm2835.c
+++ b/arch/arm/mach-bcm/board_bcm2835.c
@@ -16,13 +16,23 @@
#include <linux/irqchip.h>
#include <linux/of_address.h>
#include <linux/clk/bcm2835.h>
+#include <asm/system_info.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
static void __init bcm2835_init(void)
{
+ struct device_node *np = of_find_node_by_path("/system");
+ u32 val;
+ u64 val64;
+
bcm2835_init_clocks();
+
+ if (!of_property_read_u32(np, "linux,revision", &val))
+ system_rev = val;
+ if (!of_property_read_u64(np, "linux,serial", &val64))
+ system_serial_low = val64;
}
static const char * const bcm2835_compat[] = {

100
target/linux/brcm2708/patches-4.9/0019-dmaengine-bcm2835-Load-driver-early-and-support-lega.patch Normal file
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@ -0,0 +1,100 @@
From b4e0c1c3facd38ef5e615248c42dba90d2622257 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
Date: Sat, 3 Oct 2015 22:22:55 +0200
Subject: [PATCH] dmaengine: bcm2835: Load driver early and support legacy API
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Load driver early since at least bcm2708_fb doesn't support deferred
probing and even if it did, we don't want the video driver deferred.
Support the legacy DMA API which is needed by bcm2708_fb.
Don't mask out channel 2.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
---
drivers/dma/Kconfig | 2 +-
drivers/dma/bcm2835-dma.c | 26 +++++++++++++++++++++++++-
2 files changed, 26 insertions(+), 2 deletions(-)
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -108,7 +108,7 @@ config COH901318
config DMA_BCM2835
tristate "BCM2835 DMA engine support"
- depends on ARCH_BCM2835
+ depends on ARCH_BCM2835 || ARCH_BCM2708 || ARCH_BCM2709
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
--- a/drivers/dma/bcm2835-dma.c
+++ b/drivers/dma/bcm2835-dma.c
@@ -37,6 +37,7 @@
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/module.h>
+#include <linux/platform_data/dma-bcm2708.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/io.h>
@@ -48,6 +49,7 @@
#define BCM2835_DMA_MAX_DMA_CHAN_SUPPORTED 14
#define BCM2835_DMA_CHAN_NAME_SIZE 8
+#define BCM2835_DMA_BULK_MASK BIT(0)
struct bcm2835_dmadev {
struct dma_device ddev;
@@ -922,6 +924,9 @@ static int bcm2835_dma_probe(struct plat
base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(base))
return PTR_ERR(base);
+ rc = bcm_dmaman_probe(pdev, base, BCM2835_DMA_BULK_MASK);
+ if (rc)
+ dev_err(&pdev->dev, "Failed to initialize the legacy API\n");
od->base = base;
@@ -959,6 +964,9 @@ static int bcm2835_dma_probe(struct plat
goto err_no_dma;
}
+ /* Channel 0 is used by the legacy API */
+ chans_available &= ~BCM2835_DMA_BULK_MASK;
+
/* get irqs for each channel that we support */
for (i = 0; i <= BCM2835_DMA_MAX_DMA_CHAN_SUPPORTED; i++) {
/* skip masked out channels */
@@ -1033,6 +1041,7 @@ static int bcm2835_dma_remove(struct pla
{
struct bcm2835_dmadev *od = platform_get_drvdata(pdev);
+ bcm_dmaman_remove(pdev);
dma_async_device_unregister(&od->ddev);
bcm2835_dma_free(od);
@@ -1048,7 +1057,22 @@ static struct platform_driver bcm2835_dm
},
};
-module_platform_driver(bcm2835_dma_driver);
+static int bcm2835_dma_init(void)
+{
+ return platform_driver_register(&bcm2835_dma_driver);
+}
+
+static void bcm2835_dma_exit(void)
+{
+ platform_driver_unregister(&bcm2835_dma_driver);
+}
+
+/*
+ * Load after serial driver (arch_initcall) so we see the messages if it fails,
+ * but before drivers (module_init) that need a DMA channel.
+ */
+subsys_initcall(bcm2835_dma_init);
+module_exit(bcm2835_dma_exit);
MODULE_ALIAS("platform:bcm2835-dma");
MODULE_DESCRIPTION("BCM2835 DMA engine driver");

63
target/linux/brcm2708/patches-4.9/0020-firmware-Updated-mailbox-header.patch Normal file
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@ -0,0 +1,63 @@
From 05f9e93200ec5d5e27c8a93f69588180cddda924 Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Mon, 25 Jan 2016 17:25:12 +0000
Subject: [PATCH] firmware: Updated mailbox header
---
include/soc/bcm2835/raspberrypi-firmware.h | 11 +++++++++++
1 file changed, 11 insertions(+)
--- a/include/soc/bcm2835/raspberrypi-firmware.h
+++ b/include/soc/bcm2835/raspberrypi-firmware.h
@@ -63,6 +63,7 @@ enum rpi_firmware_property_tag {
RPI_FIRMWARE_GET_MIN_VOLTAGE = 0x00030008,
RPI_FIRMWARE_GET_TURBO = 0x00030009,
RPI_FIRMWARE_GET_MAX_TEMPERATURE = 0x0003000a,
+ RPI_FIRMWARE_GET_STC = 0x0003000b,
RPI_FIRMWARE_ALLOCATE_MEMORY = 0x0003000c,
RPI_FIRMWARE_LOCK_MEMORY = 0x0003000d,
RPI_FIRMWARE_UNLOCK_MEMORY = 0x0003000e,
@@ -72,12 +73,15 @@ enum rpi_firmware_property_tag {
RPI_FIRMWARE_SET_ENABLE_QPU = 0x00030012,
RPI_FIRMWARE_GET_DISPMANX_RESOURCE_MEM_HANDLE = 0x00030014,
RPI_FIRMWARE_GET_EDID_BLOCK = 0x00030020,
+ RPI_FIRMWARE_GET_CUSTOMER_OTP = 0x00030021,
RPI_FIRMWARE_GET_DOMAIN_STATE = 0x00030030,
RPI_FIRMWARE_SET_CLOCK_STATE = 0x00038001,
RPI_FIRMWARE_SET_CLOCK_RATE = 0x00038002,
RPI_FIRMWARE_SET_VOLTAGE = 0x00038003,
RPI_FIRMWARE_SET_TURBO = 0x00038009,
+ RPI_FIRMWARE_SET_CUSTOMER_OTP = 0x00038021,
RPI_FIRMWARE_SET_DOMAIN_STATE = 0x00038030,
+ RPI_FIRMWARE_SET_SDHOST_CLOCK = 0x00038042,
/* Dispmanx TAGS */
RPI_FIRMWARE_FRAMEBUFFER_ALLOCATE = 0x00040001,
@@ -91,6 +95,8 @@ enum rpi_firmware_property_tag {
RPI_FIRMWARE_FRAMEBUFFER_GET_VIRTUAL_OFFSET = 0x00040009,
RPI_FIRMWARE_FRAMEBUFFER_GET_OVERSCAN = 0x0004000a,
RPI_FIRMWARE_FRAMEBUFFER_GET_PALETTE = 0x0004000b,
+ RPI_FIRMWARE_FRAMEBUFFER_GET_TOUCHBUF = 0x0004000f,
+ RPI_FIRMWARE_FRAMEBUFFER_GET_GPIOVIRTBUF = 0x00040010,
RPI_FIRMWARE_FRAMEBUFFER_RELEASE = 0x00048001,
RPI_FIRMWARE_FRAMEBUFFER_TEST_PHYSICAL_WIDTH_HEIGHT = 0x00044003,
RPI_FIRMWARE_FRAMEBUFFER_TEST_VIRTUAL_WIDTH_HEIGHT = 0x00044004,
@@ -100,6 +106,7 @@ enum rpi_firmware_property_tag {
RPI_FIRMWARE_FRAMEBUFFER_TEST_VIRTUAL_OFFSET = 0x00044009,
RPI_FIRMWARE_FRAMEBUFFER_TEST_OVERSCAN = 0x0004400a,
RPI_FIRMWARE_FRAMEBUFFER_TEST_PALETTE = 0x0004400b,
+ RPI_FIRMWARE_FRAMEBUFFER_TEST_VSYNC = 0x0004400e,
RPI_FIRMWARE_FRAMEBUFFER_SET_PHYSICAL_WIDTH_HEIGHT = 0x00048003,
RPI_FIRMWARE_FRAMEBUFFER_SET_VIRTUAL_WIDTH_HEIGHT = 0x00048004,
RPI_FIRMWARE_FRAMEBUFFER_SET_DEPTH = 0x00048005,
@@ -108,6 +115,10 @@ enum rpi_firmware_property_tag {
RPI_FIRMWARE_FRAMEBUFFER_SET_VIRTUAL_OFFSET = 0x00048009,
RPI_FIRMWARE_FRAMEBUFFER_SET_OVERSCAN = 0x0004800a,
RPI_FIRMWARE_FRAMEBUFFER_SET_PALETTE = 0x0004800b,
+ RPI_FIRMWARE_FRAMEBUFFER_SET_VSYNC = 0x0004800e,
+ RPI_FIRMWARE_FRAMEBUFFER_SET_BACKLIGHT = 0x0004800f,
+
+ RPI_FIRMWARE_VCHIQ_INIT = 0x00048010,
RPI_FIRMWARE_GET_COMMAND_LINE = 0x00050001,
RPI_FIRMWARE_GET_DMA_CHANNELS = 0x00060001,

37
target/linux/brcm2708/patches-4.9/0021-clk-bcm2835-Mark-GPIO-clocks-enabled-at-boot-as-crit.patch Normal file
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@ -0,0 +1,37 @@
From c9cb54929b3466ed0da304563e22739477055d3b Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Mon, 9 May 2016 17:28:18 -0700
Subject: [PATCH] clk: bcm2835: Mark GPIO clocks enabled at boot as critical.
These divide off of PLLD_PER and are used for the ethernet and wifi
PHYs source PLLs. Neither of them is currently represented by a phy
device that would grab the clock for us.
This keeps other drivers from killing the networking PHYs when they
disable their own clocks and trigger PLLD_PER's refcount going to 0.
v2: Skip marking as critical if they aren't on at boot.
Signed-off-by: Eric Anholt <eric@anholt.net>
---
drivers/clk/bcm/clk-bcm2835.c | 9 +++++++++
1 file changed, 9 insertions(+)
--- a/drivers/clk/bcm/clk-bcm2835.c
+++ b/drivers/clk/bcm/clk-bcm2835.c
@@ -1262,6 +1262,15 @@ static struct clk_hw *bcm2835_register_c
init.name = data->name;
init.flags = data->flags | CLK_IGNORE_UNUSED;
+ /*
+ * Some GPIO clocks for ethernet/wifi PLLs are marked as
+ * critical (since some platforms use them), but if the
+ * firmware didn't have them turned on then they clearly
+ * aren't actually critical.
+ */
+ if ((cprman_read(cprman, data->ctl_reg) & CM_ENABLE) == 0)
+ init.flags &= ~CLK_IS_CRITICAL;
+
if (data->is_vpu_clock) {
init.ops = &bcm2835_vpu_clock_clk_ops;
} else {

20
target/linux/brcm2708/patches-4.9/0022-rtc-Add-SPI-alias-for-pcf2123-driver.patch Normal file
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@ -0,0 +1,20 @@
From 6c8399fb8dcc815aa9d6b4488a519785912ea983 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Wed, 15 Jun 2016 16:48:41 +0100
Subject: [PATCH] rtc: Add SPI alias for pcf2123 driver
Without this alias, Device Tree won't cause the driver
to be loaded.
See: https://github.com/raspberrypi/linux/pull/1510
---
drivers/rtc/rtc-pcf2123.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/rtc/rtc-pcf2123.c
+++ b/drivers/rtc/rtc-pcf2123.c
@@ -472,3 +472,4 @@ module_spi_driver(pcf2123_driver);
MODULE_AUTHOR("Chris Verges <chrisv@cyberswitching.com>");
MODULE_DESCRIPTION("NXP PCF2123 RTC driver");
MODULE_LICENSE("GPL");
+MODULE_ALIAS("spi:rtc-pcf2123");

124
target/linux/brcm2708/patches-4.9/0023-watchdog-bcm2835-Support-setting-reboot-partition.patch Normal file
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@ -0,0 +1,124 @@
From 259f169ef05f12bc7fed007befc11ed6c66dd9c8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
Date: Fri, 7 Oct 2016 16:50:59 +0200
Subject: [PATCH] watchdog: bcm2835: Support setting reboot partition
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
The Raspberry Pi firmware looks at the RSTS register to know which
partition to boot from. The reboot syscall command
LINUX_REBOOT_CMD_RESTART2 supports passing in a string argument.
Add support for passing in a partition number 0..63 to boot from.
Partition 63 is a special partiton indicating halt.
If the partition doesn't exist, the firmware falls back to partition 0.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
---
drivers/watchdog/bcm2835_wdt.c | 61 +++++++++++++++++++++++++-----------------
1 file changed, 36 insertions(+), 25 deletions(-)
--- a/drivers/watchdog/bcm2835_wdt.c
+++ b/drivers/watchdog/bcm2835_wdt.c
@@ -35,13 +35,7 @@
#define PM_RSTC_WRCFG_SET 0x00000030
#define PM_RSTC_WRCFG_FULL_RESET 0x00000020
#define PM_RSTC_RESET 0x00000102
-
-/*
- * The Raspberry Pi firmware uses the RSTS register to know which partiton
- * to boot from. The partiton value is spread into bits 0, 2, 4, 6, 8, 10.
- * Partiton 63 is a special partition used by the firmware to indicate halt.
- */
-#define PM_RSTS_RASPBERRYPI_HALT 0x555
+#define PM_RSTS_PARTITION_CLR 0xfffffaaa
#define SECS_TO_WDOG_TICKS(x) ((x) << 16)
#define WDOG_TICKS_TO_SECS(x) ((x) >> 16)
@@ -111,15 +105,28 @@ static struct watchdog_device bcm2835_wd
.timeout = WDOG_TICKS_TO_SECS(PM_WDOG_TIME_SET),
};
-static int
-bcm2835_restart(struct notifier_block *this, unsigned long mode, void *cmd)
+/*
+ * The Raspberry Pi firmware uses the RSTS register to know which partiton
+ * to boot from. The partiton value is spread into bits 0, 2, 4, 6, 8, 10.
+ * Partiton 63 is a special partition used by the firmware to indicate halt.
+ */
+
+static void bcm2835_restart(struct bcm2835_wdt *wdt, u8 partition)
{
- struct bcm2835_wdt *wdt = container_of(this, struct bcm2835_wdt,
- restart_handler);
- u32 val;
+ u32 val, rsts;
+
+ rsts = (partition & BIT(0)) | ((partition & BIT(1)) << 1) |
+ ((partition & BIT(2)) << 2) | ((partition & BIT(3)) << 3) |
+ ((partition & BIT(4)) << 4) | ((partition & BIT(5)) << 5);
+
+ val = readl_relaxed(wdt->base + PM_RSTS);
+ val &= PM_RSTS_PARTITION_CLR;
+ val |= PM_PASSWORD | rsts;
+ writel_relaxed(val, wdt->base + PM_RSTS);
/* use a timeout of 10 ticks (~150us) */
writel_relaxed(10 | PM_PASSWORD, wdt->base + PM_WDOG);
+
val = readl_relaxed(wdt->base + PM_RSTC);
val &= PM_RSTC_WRCFG_CLR;
val |= PM_PASSWORD | PM_RSTC_WRCFG_FULL_RESET;
@@ -127,6 +134,20 @@ bcm2835_restart(struct notifier_block *t
/* No sleeping, possibly atomic. */
mdelay(1);
+}
+
+static int bcm2835_restart_notifier_call(struct notifier_block *this,
+ unsigned long mode, void *cmd)
+{
+ struct bcm2835_wdt *wdt = container_of(this, struct bcm2835_wdt,
+ restart_handler);
+ unsigned long long val;
+ u8 partition = 0;
+
+ if (cmd && !kstrtoull(cmd, 0, &val) && val <= 63)
+ partition = val;
+
+ bcm2835_restart(wdt, partition);
return 0;
}
@@ -142,19 +163,9 @@ static void bcm2835_power_off(void)
of_find_compatible_node(NULL, NULL, "brcm,bcm2835-pm-wdt");
struct platform_device *pdev = of_find_device_by_node(np);
struct bcm2835_wdt *wdt = platform_get_drvdata(pdev);
- u32 val;
-
- /*
- * We set the watchdog hard reset bit here to distinguish this reset
- * from the normal (full) reset. bootcode.bin will not reboot after a
- * hard reset.
- */
- val = readl_relaxed(wdt->base + PM_RSTS);
- val |= PM_PASSWORD | PM_RSTS_RASPBERRYPI_HALT;
- writel_relaxed(val, wdt->base + PM_RSTS);
- /* Continue with normal reset mechanism */
- bcm2835_restart(&wdt->restart_handler, REBOOT_HARD, NULL);
+ /* Partition 63 tells the firmware that this is a halt */
+ bcm2835_restart(wdt, 63);
}
static int bcm2835_wdt_probe(struct platform_device *pdev)
@@ -188,7 +199,7 @@ static int bcm2835_wdt_probe(struct plat
return err;
}
- wdt->restart_handler.notifier_call = bcm2835_restart;
+ wdt->restart_handler.notifier_call = bcm2835_restart_notifier_call;
wdt->restart_handler.priority = 128;
register_restart_handler(&wdt->restart_handler);
if (pm_power_off == NULL)

23
target/linux/brcm2708/patches-4.9/0024-reboot-Use-power-off-rather-than-busy-spinning-when-.patch Normal file
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@ -0,0 +1,23 @@
From 79d93260c98e0164ca89c9f7c767528d7a3aaeae Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Tue, 5 Apr 2016 19:40:12 +0100
Subject: [PATCH] reboot: Use power off rather than busy spinning when halt is
requested
---
arch/arm/kernel/reboot.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
--- a/arch/arm/kernel/reboot.c
+++ b/arch/arm/kernel/reboot.c
@@ -102,9 +102,7 @@ void machine_shutdown(void)
*/
void machine_halt(void)
{
- local_irq_disable();
- smp_send_stop();
- while (1);
+ machine_power_off();
}
/*

19
target/linux/brcm2708/patches-4.9/0025-bcm-Make-RASPBERRYPI_POWER-depend-on-PM.patch Normal file
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@ -0,0 +1,19 @@
From 9799ea4ba8ae1e6c586a3dd728ad75f68830e93f Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Wed, 9 Nov 2016 13:02:52 +0000
Subject: [PATCH] bcm: Make RASPBERRYPI_POWER depend on PM
---
drivers/soc/bcm/Kconfig | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/soc/bcm/Kconfig
+++ b/drivers/soc/bcm/Kconfig
@@ -4,6 +4,7 @@ config RASPBERRYPI_POWER
bool "Raspberry Pi power domain driver"
depends on ARCH_BCM2835 || (COMPILE_TEST && OF)
depends on RASPBERRYPI_FIRMWARE=y
+ depends on PM
select PM_GENERIC_DOMAINS if PM
help
This enables support for the RPi power domains which can be enabled

45
target/linux/brcm2708/patches-4.9/0026-Register-the-clocks-early-during-the-boot-process.patch Normal file
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@ -0,0 +1,45 @@
From 261269cc41f6b77f7264f0e44f9b9da5cc36de00 Mon Sep 17 00:00:00 2001
From: Martin Sperl <kernel@martin.sperl.org>
Date: Fri, 2 Sep 2016 16:45:27 +0100
Subject: [PATCH] Register the clocks early during the boot process, so that
special/critical clocks can get enabled early on in the boot process avoiding
the risk of disabling a clock, pll_divider or pll when a claiming driver
fails to install propperly - maybe it needs to defer.
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
---
drivers/clk/bcm/clk-bcm2835.c | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
--- a/drivers/clk/bcm/clk-bcm2835.c
+++ b/drivers/clk/bcm/clk-bcm2835.c
@@ -1903,8 +1903,15 @@ static int bcm2835_clk_probe(struct plat
if (ret)
return ret;
- return of_clk_add_hw_provider(dev->of_node, of_clk_hw_onecell_get,
+ ret = of_clk_add_hw_provider(dev->of_node, of_clk_hw_onecell_get,
&cprman->onecell);
+ if (ret)
+ return ret;
+
+ /* note that we have registered all the clocks */
+ dev_dbg(dev, "registered %d clocks\n", asize);
+
+ return 0;
}
static const struct of_device_id bcm2835_clk_of_match[] = {
@@ -1921,7 +1928,11 @@ static struct platform_driver bcm2835_cl
.probe = bcm2835_clk_probe,
};
-builtin_platform_driver(bcm2835_clk_driver);
+static int __init __bcm2835_clk_driver_init(void)
+{
+ return platform_driver_register(&bcm2835_clk_driver);
+}
+core_initcall(__bcm2835_clk_driver_init);
MODULE_AUTHOR("Eric Anholt <eric@anholt.net>");
MODULE_DESCRIPTION("BCM2835 clock driver");

26
target/linux/brcm2708/patches-4.9/0027-bcm2835-rng-Avoid-initialising-if-already-enabled.patch Normal file
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@ -0,0 +1,26 @@
From a195976d635c3672cae684d6338655aa25f6d98c Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Tue, 6 Dec 2016 17:05:39 +0000
Subject: [PATCH] bcm2835-rng: Avoid initialising if already enabled
Avoids the 0x40000 cycles of warmup again if firmware has already used it
---
drivers/char/hw_random/bcm2835-rng.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/drivers/char/hw_random/bcm2835-rng.c
+++ b/drivers/char/hw_random/bcm2835-rng.c
@@ -102,9 +102,10 @@ static int bcm2835_rng_probe(struct plat
rng_setup(rng_base);
/* set warm-up count & enable */
- __raw_writel(RNG_WARMUP_COUNT, rng_base + RNG_STATUS);
- __raw_writel(RNG_RBGEN, rng_base + RNG_CTRL);
-
+ if (!(__raw_readl(rng_base + RNG_CTRL) & RNG_RBGEN)) {
+ __raw_writel(RNG_WARMUP_COUNT, rng_base + RNG_STATUS);
+ __raw_writel(RNG_RBGEN, rng_base + RNG_CTRL);
+ }
/* register driver */
err = hwrng_register(&bcm2835_rng_ops);
if (err) {

20
target/linux/brcm2708/patches-4.9/0028-kbuild-Ignore-dtco-targets-when-filtering-symbols.patch Normal file
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@ -0,0 +1,20 @@
From 6c52812a34fa4ab0d40b57fef10d23fe2fb0768b Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Wed, 24 Aug 2016 16:28:44 +0100
Subject: [PATCH] kbuild: Ignore dtco targets when filtering symbols
---
scripts/Kbuild.include | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -284,7 +284,7 @@ ksym_dep_filter =
$(CPP) $(call flags_nodeps,c_flags) -D__KSYM_DEPS__ $< ;; \
as_*_S|cpp_s_S) \
$(CPP) $(call flags_nodeps,a_flags) -D__KSYM_DEPS__ $< ;; \
- boot*|build*|*cpp_lds_S|dtc|host*|vdso*) : ;; \
+ boot*|build*|*cpp_lds_S|dtc*|host*|vdso*) : ;; \
*) echo "Don't know how to preprocess $(1)" >&2; false ;; \
esac | tr ";" "\n" | sed -rn 's/^.*=== __KSYM_(.*) ===.*$$/KSYM_\1/p'

36
target/linux/brcm2708/patches-4.9/0029-BCM2835_DT-Fix-I2S-register-map.patch Normal file
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@ -0,0 +1,36 @@
From 8ee6fd93aa3328d325524b8503714e3b4839d1b9 Mon Sep 17 00:00:00 2001
From: Robert Tiemann <rtie@gmx.de>
Date: Mon, 20 Jul 2015 11:01:25 +0200
Subject: [PATCH] BCM2835_DT: Fix I2S register map
---
Documentation/devicetree/bindings/dma/brcm,bcm2835-dma.txt | 4 ++--
Documentation/devicetree/bindings/sound/brcm,bcm2835-i2s.txt | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)
--- a/Documentation/devicetree/bindings/dma/brcm,bcm2835-dma.txt
+++ b/Documentation/devicetree/bindings/dma/brcm,bcm2835-dma.txt
@@ -74,8 +74,8 @@ Example:
bcm2835_i2s: i2s@7e203000 {
compatible = "brcm,bcm2835-i2s";
- reg = < 0x7e203000 0x20>,
- < 0x7e101098 0x02>;
+ reg = < 0x7e203000 0x24>,
+ < 0x7e101098 0x08>;
dmas = <&dma 2>,
<&dma 3>;
--- a/Documentation/devicetree/bindings/sound/brcm,bcm2835-i2s.txt
+++ b/Documentation/devicetree/bindings/sound/brcm,bcm2835-i2s.txt
@@ -16,8 +16,8 @@ Example:
bcm2835_i2s: i2s@7e203000 {
compatible = "brcm,bcm2835-i2s";
- reg = <0x7e203000 0x20>,
- <0x7e101098 0x02>;
+ reg = <0x7e203000 0x24>,
+ <0x7e101098 0x08>;
dmas = <&dma 2>,
<&dma 3>;

199
target/linux/brcm2708/patches-4.9/0030-Main-bcm2708-bcm2709-linux-port.patch Normal file
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@ -0,0 +1,199 @@
From 28a1aeb6b49ffdf5cb5ba9e326df962c270c1f34 Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Sun, 12 May 2013 12:24:19 +0100
Subject: [PATCH] Main bcm2708/bcm2709 linux port
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Signed-off-by: popcornmix <popcornmix@gmail.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
bcm2709: Drop platform smp and timer init code
irq-bcm2836 handles this through these functions:
bcm2835_init_local_timer_frequency()
bcm2836_arm_irqchip_smp_init()
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
bcm270x: Use watchdog for reboot/poweroff
The watchdog driver already has support for reboot/poweroff.
Make use of this and remove the code from the platform files.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
---
arch/arm/mach-bcm/Kconfig | 1 +
arch/arm/mach-bcm/board_bcm2835.c | 17 +++++++++++++++++
arch/arm/mm/proc-v6.S | 15 ++++++++++++---
drivers/irqchip/irq-bcm2835.c | 7 ++++++-
drivers/mailbox/bcm2835-mailbox.c | 18 ++++++++++++++++--
5 files changed, 52 insertions(+), 6 deletions(-)
--- a/arch/arm/mach-bcm/Kconfig
+++ b/arch/arm/mach-bcm/Kconfig
@@ -155,6 +155,7 @@ config ARCH_BCM2835
select FIQ
select PINCTRL
select PINCTRL_BCM2835
+ select MFD_SYSCON if ARCH_MULTI_V7
help
This enables support for the Broadcom BCM2835 and BCM2836 SoCs.
This SoC is used in the Raspberry Pi and Roku 2 devices.
--- a/arch/arm/mach-bcm/board_bcm2835.c
+++ b/arch/arm/mach-bcm/board_bcm2835.c
@@ -16,17 +16,21 @@
#include <linux/irqchip.h>
#include <linux/of_address.h>
#include <linux/clk/bcm2835.h>
+#include <linux/broadcom/vc_cma.h>
#include <asm/system_info.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
+#include <linux/dma-mapping.h>
+
static void __init bcm2835_init(void)
{
struct device_node *np = of_find_node_by_path("/system");
u32 val;
u64 val64;
+ vc_cma_early_init();
bcm2835_init_clocks();
if (!of_property_read_u32(np, "linux,revision", &val))
@@ -35,6 +39,17 @@ static void __init bcm2835_init(void)
system_serial_low = val64;
}
+static void __init bcm2835_init_early(void)
+{
+ /* dwc_otg needs this for bounce buffers on non-aligned transfers */
+ init_dma_coherent_pool_size(SZ_1M);
+}
+
+static void __init bcm2835_board_reserve(void)
+{
+ vc_cma_reserve();
+}
+
static const char * const bcm2835_compat[] = {
#ifdef CONFIG_ARCH_MULTI_V6
"brcm,bcm2835",
@@ -47,5 +62,7 @@ static const char * const bcm2835_compat
DT_MACHINE_START(BCM2835, "BCM2835")
.init_machine = bcm2835_init,
+ .reserve = bcm2835_board_reserve,
+ .init_early = bcm2835_init_early,
.dt_compat = bcm2835_compat
MACHINE_END
--- a/arch/arm/mm/proc-v6.S
+++ b/arch/arm/mm/proc-v6.S
@@ -73,10 +73,19 @@ ENDPROC(cpu_v6_reset)
*
* IRQs are already disabled.
*/
+
+/* See jira SW-5991 for details of this workaround */
ENTRY(cpu_v6_do_idle)
- mov r1, #0
- mcr p15, 0, r1, c7, c10, 4 @ DWB - WFI may enter a low-power mode
- mcr p15, 0, r1, c7, c0, 4 @ wait for interrupt
+ .align 5
+ mov r1, #2
+1: subs r1, #1
+ nop
+ mcreq p15, 0, r1, c7, c10, 4 @ DWB - WFI may enter a low-power mode
+ mcreq p15, 0, r1, c7, c0, 4 @ wait for interrupt
+ nop
+ nop
+ nop
+ bne 1b
ret lr
ENTRY(cpu_v6_dcache_clean_area)
--- a/drivers/irqchip/irq-bcm2835.c
+++ b/drivers/irqchip/irq-bcm2835.c
@@ -54,7 +54,9 @@
#include <linux/regmap.h>
#include <asm/exception.h>
+#ifndef CONFIG_ARM64
#include <asm/mach/irq.h>
+#endif
/* Put the bank and irq (32 bits) into the hwirq */
#define MAKE_HWIRQ(b, n) (((b) << 5) | (n))
@@ -82,6 +84,7 @@
#define NR_BANKS 3
#define IRQS_PER_BANK 32
#define NUMBER_IRQS MAKE_HWIRQ(NR_BANKS, 0)
+#undef FIQ_START
#define FIQ_START (NR_IRQS_BANK0 + MAKE_HWIRQ(NR_BANKS - 1, 0))
static const int reg_pending[] __initconst = { 0x00, 0x04, 0x08 };
@@ -256,10 +259,12 @@ static int __init armctrl_of_init(struct
MAKE_HWIRQ(b, i) + NUMBER_IRQS);
BUG_ON(irq <= 0);
irq_set_chip(irq, &armctrl_chip);
- set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+ irq_set_probe(irq);
}
}
+#ifndef CONFIG_ARM64
init_FIQ(FIQ_START);
+#endif
return 0;
}
--- a/drivers/mailbox/bcm2835-mailbox.c
+++ b/drivers/mailbox/bcm2835-mailbox.c
@@ -51,12 +51,15 @@
#define MAIL1_WRT (ARM_0_MAIL1 + 0x00)
#define MAIL1_STA (ARM_0_MAIL1 + 0x18)
+/* On ARCH_BCM270x these come through <linux/interrupt.h> (arm_control.h ) */
+#ifndef ARM_MS_FULL
/* Status register: FIFO state. */
#define ARM_MS_FULL BIT(31)
#define ARM_MS_EMPTY BIT(30)
/* Configuration register: Enable interrupts. */
#define ARM_MC_IHAVEDATAIRQEN BIT(0)
+#endif
struct bcm2835_mbox {
void __iomem *regs;
@@ -151,7 +154,7 @@ static int bcm2835_mbox_probe(struct pla
return -ENOMEM;
spin_lock_init(&mbox->lock);
- ret = devm_request_irq(dev, irq_of_parse_and_map(dev->of_node, 0),
+ ret = devm_request_irq(dev, platform_get_irq(pdev, 0),
bcm2835_mbox_irq, 0, dev_name(dev), mbox);
if (ret) {
dev_err(dev, "Failed to register a mailbox IRQ handler: %d\n",
@@ -209,7 +212,18 @@ static struct platform_driver bcm2835_mb
.probe = bcm2835_mbox_probe,
.remove = bcm2835_mbox_remove,
};
-module_platform_driver(bcm2835_mbox_driver);
+
+static int __init bcm2835_mbox_init(void)
+{
+ return platform_driver_register(&bcm2835_mbox_driver);
+}
+arch_initcall(bcm2835_mbox_init);
+
+static void __init bcm2835_mbox_exit(void)
+{
+ platform_driver_unregister(&bcm2835_mbox_driver);
+}
+module_exit(bcm2835_mbox_exit);
MODULE_AUTHOR("Lubomir Rintel <lkundrak@v3.sk>");
MODULE_DESCRIPTION("BCM2835 mailbox IPC driver");

60858
target/linux/brcm2708/patches-4.9/0031-Add-dwc_otg-driver.patch Normal file
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3452
target/linux/brcm2708/patches-4.9/0032-bcm2708-framebuffer-driver.patch Normal file
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623
target/linux/brcm2708/patches-4.9/0033-dmaengine-Add-support-for-BCM2708.patch Normal file
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@ -0,0 +1,623 @@
From 5ab35842ff7cc211dcfbf1113953778923097496 Mon Sep 17 00:00:00 2001
From: Florian Meier <florian.meier@koalo.de>
Date: Fri, 22 Nov 2013 14:22:53 +0100
Subject: [PATCH] dmaengine: Add support for BCM2708
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Add support for DMA controller of BCM2708 as used in the Raspberry Pi.
Currently it only supports cyclic DMA.
Signed-off-by: Florian Meier <florian.meier@koalo.de>
dmaengine: expand functionality by supporting scatter/gather transfers sdhci-bcm2708 and dma.c: fix for LITE channels
DMA: fix cyclic LITE length overflow bug
dmaengine: bcm2708: Remove chancnt affectations
Mirror bcm2835-dma.c commit 9eba5536a7434c69d8c185d4bd1c70734d92287d:
chancnt is already filled by dma_async_device_register, which uses the channel
list to know how much channels there is.
Since it's already filled, we can safely remove it from the drivers' probe
function.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
dmaengine: bcm2708: overwrite dreq only if it is not set
dreq is set when the DMA channel is fetched from Device Tree.
slave_id is set using dmaengine_slave_config().
Only overwrite dreq with slave_id if it is not set.
dreq/slave_id in the cyclic DMA case is not touched, because I don't
have hardware to test with.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
dmaengine: bcm2708: do device registration in the board file
Don't register the device in the driver. Do it in the board file.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
dmaengine: bcm2708: don't restrict DT support to ARCH_BCM2835
Both ARCH_BCM2835 and ARCH_BCM270x are built with OF now.
Add Device Tree support to the non ARCH_BCM2835 case.
Use the same driver name regardless of architecture.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
BCM270x_DT: add bcm2835-dma entry
Add Device Tree entry for bcm2835-dma.
The entry doesn't contain any resources since they are handled
by the arch/arm/mach-bcm270x/dma.c driver.
In non-DT mode, don't add the device in the board file.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
bcm2708-dmaengine: Add debug options
BCM270x: Add memory and irq resources to dmaengine device and DT
Prepare for merging of the legacy DMA API arch driver dma.c
with bcm2708-dmaengine by adding memory and irq resources both
to platform file device and Device Tree node.
Don't use BCM_DMAMAN_DRIVER_NAME so we don't have to include mach/dma.h
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
dmaengine: bcm2708: Merge with arch dma.c driver and disable dma.c
Merge the legacy DMA API driver with bcm2708-dmaengine.
This is done so we can use bcm2708_fb on ARCH_BCM2835 (mailbox
driver is also needed).
Changes to the dma.c code:
- Use BIT() macro.
- Cutdown some comments to one line.
- Add mutex to vc_dmaman and use this, since the dev lock is locked
during probing of the engine part.
- Add global g_dmaman variable since drvdata is used by the engine part.
- Restructure for readability:
vc_dmaman_chan_alloc()
vc_dmaman_chan_free()
bcm_dma_chan_free()
- Restructure bcm_dma_chan_alloc() to simplify error handling.
- Use device irq resources instead of hardcoded bcm_dma_irqs table.
- Remove dev_dmaman_register() and code it directly.
- Remove dev_dmaman_deregister() and code it directly.
- Simplify bcm_dmaman_probe() using devm_* functions.
- Get dmachans from DT if available.
- Keep 'dma.dmachans' module argument name for backwards compatibility.
Make it available on ARCH_BCM2835 as well.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
dmaengine: bcm2708: set residue_granularity field
bcm2708-dmaengine supports residue reporting at burst level
but didn't report this via the residue_granularity field.
Without this field set properly we get playback issues with I2S cards.
dmaengine: bcm2708-dmaengine: Fix memory leak when stopping a running transfer
bcm2708-dmaengine: Use more DMA channels (but not 12)
1) Only the bcm2708_fb drivers uses the legacy DMA API, and
it requires a BULK-capable channel, so all other types
(FAST, NORMAL and LITE) can be made available to the regular
DMA API.
2) DMA channels 11-14 share an interrupt. The driver can't
handle this, so don't use channels 12-14 (12 was used, probably
because it appears to have an interrupt, but in reality that
interrupt is for activity on ANY channel). This may explain
a lockup encountered when running out of DMA channels.
The combined effect of this patch is to leave 7 DMA channels
available + channel 0 for bcm2708_fb via the legacy API.
See: https://github.com/raspberrypi/linux/issues/1110
https://github.com/raspberrypi/linux/issues/1108
dmaengine: bcm2708: Make legacy API available for bcm2835-dma
bcm2708_fb uses the legacy DMA API, so in order to start using
bcm2835-dma, bcm2835-dma has to support the legacy API. Make this
possible by exporting bcm_dmaman_probe() and bcm_dmaman_remove().
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
dmaengine: bcm2708: Change DT compatible string
Both bcm2835-dma and bcm2708-dmaengine have the same compatible string.
So change compatible to "brcm,bcm2708-dma".
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
dmaengine: bcm2708: Remove driver but keep legacy API
Dropping non-DT support means we don't need this driver,
but we still need the legacy DMA API.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
bcm2708-dmaengine - Fix arm64 portability/build issues
---
drivers/dma/Kconfig | 6 +-
drivers/dma/Makefile | 1 +
drivers/dma/bcm2708-dmaengine.c | 281 ++++++++++++++++++++++++++++++
include/linux/platform_data/dma-bcm2708.h | 143 +++++++++++++++
4 files changed, 430 insertions(+), 1 deletion(-)
create mode 100644 drivers/dma/bcm2708-dmaengine.c
create mode 100644 include/linux/platform_data/dma-bcm2708.h
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -108,7 +108,7 @@ config COH901318
config DMA_BCM2835
tristate "BCM2835 DMA engine support"
- depends on ARCH_BCM2835 || ARCH_BCM2708 || ARCH_BCM2709
+ depends on ARCH_BCM2835
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
@@ -499,6 +499,10 @@ config TIMB_DMA
help
Enable support for the Timberdale FPGA DMA engine.
+config DMA_BCM2708
+ tristate "BCM2708 DMA legacy API support"
+ depends on DMA_BCM2835
+
config TI_CPPI41
tristate "AM33xx CPPI41 DMA support"
depends on ARCH_OMAP
--- a/drivers/dma/Makefile
+++ b/drivers/dma/Makefile
@@ -18,6 +18,7 @@ obj-$(CONFIG_AT_HDMAC) += at_hdmac.o
obj-$(CONFIG_AT_XDMAC) += at_xdmac.o
obj-$(CONFIG_AXI_DMAC) += dma-axi-dmac.o
obj-$(CONFIG_COH901318) += coh901318.o coh901318_lli.o
+obj-$(CONFIG_DMA_BCM2708) += bcm2708-dmaengine.o
obj-$(CONFIG_DMA_BCM2835) += bcm2835-dma.o
obj-$(CONFIG_DMA_JZ4740) += dma-jz4740.o
obj-$(CONFIG_DMA_JZ4780) += dma-jz4780.o
--- /dev/null
+++ b/drivers/dma/bcm2708-dmaengine.c
@@ -0,0 +1,281 @@
+/*
+ * BCM2708 legacy DMA API
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/platform_data/dma-bcm2708.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/spinlock.h>
+
+#include "virt-dma.h"
+
+#define CACHE_LINE_MASK 31
+#define DEFAULT_DMACHAN_BITMAP 0x10 /* channel 4 only */
+
+/* valid only for channels 0 - 14, 15 has its own base address */
+#define BCM2708_DMA_CHAN(n) ((n) << 8) /* base address */
+#define BCM2708_DMA_CHANIO(dma_base, n) \
+ ((void __iomem *)((char *)(dma_base) + BCM2708_DMA_CHAN(n)))
+
+struct vc_dmaman {
+ void __iomem *dma_base;
+ u32 chan_available; /* bitmap of available channels */
+ u32 has_feature[BCM_DMA_FEATURE_COUNT]; /* bitmap of feature presence */
+ struct mutex lock;
+};
+
+static struct device *dmaman_dev; /* we assume there's only one! */
+static struct vc_dmaman *g_dmaman; /* DMA manager */
+
+/* DMA Auxiliary Functions */
+
+/* A DMA buffer on an arbitrary boundary may separate a cache line into a
+ section inside the DMA buffer and another section outside it.
+ Even if we flush DMA buffers from the cache there is always the chance that
+ during a DMA someone will access the part of a cache line that is outside
+ the DMA buffer - which will then bring in unwelcome data.
+ Without being able to dictate our own buffer pools we must insist that
+ DMA buffers consist of a whole number of cache lines.
+*/
+extern int bcm_sg_suitable_for_dma(struct scatterlist *sg_ptr, int sg_len)
+{
+ int i;
+
+ for (i = 0; i < sg_len; i++) {
+ if (sg_ptr[i].offset & CACHE_LINE_MASK ||
+ sg_ptr[i].length & CACHE_LINE_MASK)
+ return 0;
+ }
+
+ return 1;
+}
+EXPORT_SYMBOL_GPL(bcm_sg_suitable_for_dma);
+
+extern void bcm_dma_start(void __iomem *dma_chan_base,
+ dma_addr_t control_block)
+{
+ dsb(sy); /* ARM data synchronization (push) operation */
+
+ writel(control_block, dma_chan_base + BCM2708_DMA_ADDR);
+ writel(BCM2708_DMA_ACTIVE, dma_chan_base + BCM2708_DMA_CS);
+}
+EXPORT_SYMBOL_GPL(bcm_dma_start);
+
+extern void bcm_dma_wait_idle(void __iomem *dma_chan_base)
+{
+ dsb(sy);
+
+ /* ugly busy wait only option for now */
+ while (readl(dma_chan_base + BCM2708_DMA_CS) & BCM2708_DMA_ACTIVE)
+ cpu_relax();
+}
+EXPORT_SYMBOL_GPL(bcm_dma_wait_idle);
+
+extern bool bcm_dma_is_busy(void __iomem *dma_chan_base)
+{
+ dsb(sy);
+
+ return readl(dma_chan_base + BCM2708_DMA_CS) & BCM2708_DMA_ACTIVE;
+}
+EXPORT_SYMBOL_GPL(bcm_dma_is_busy);
+
+/* Complete an ongoing DMA (assuming its results are to be ignored)
+ Does nothing if there is no DMA in progress.
+ This routine waits for the current AXI transfer to complete before
+ terminating the current DMA. If the current transfer is hung on a DREQ used
+ by an uncooperative peripheral the AXI transfer may never complete. In this
+ case the routine times out and return a non-zero error code.
+ Use of this routine doesn't guarantee that the ongoing or aborted DMA
+ does not produce an interrupt.
+*/
+extern int bcm_dma_abort(void __iomem *dma_chan_base)
+{
+ unsigned long int cs;
+ int rc = 0;
+
+ cs = readl(dma_chan_base + BCM2708_DMA_CS);
+
+ if (BCM2708_DMA_ACTIVE & cs) {
+ long int timeout = 10000;
+
+ /* write 0 to the active bit - pause the DMA */
+ writel(0, dma_chan_base + BCM2708_DMA_CS);
+
+ /* wait for any current AXI transfer to complete */
+ while (0 != (cs & BCM2708_DMA_ISPAUSED) && --timeout >= 0)
+ cs = readl(dma_chan_base + BCM2708_DMA_CS);
+
+ if (0 != (cs & BCM2708_DMA_ISPAUSED)) {
+ /* we'll un-pause when we set of our next DMA */
+ rc = -ETIMEDOUT;
+
+ } else if (BCM2708_DMA_ACTIVE & cs) {
+ /* terminate the control block chain */
+ writel(0, dma_chan_base + BCM2708_DMA_NEXTCB);
+
+ /* abort the whole DMA */
+ writel(BCM2708_DMA_ABORT | BCM2708_DMA_ACTIVE,
+ dma_chan_base + BCM2708_DMA_CS);
+ }
+ }
+
+ return rc;
+}
+EXPORT_SYMBOL_GPL(bcm_dma_abort);
+
+ /* DMA Manager Device Methods */
+
+static void vc_dmaman_init(struct vc_dmaman *dmaman, void __iomem *dma_base,
+ u32 chans_available)
+{
+ dmaman->dma_base = dma_base;
+ dmaman->chan_available = chans_available;
+ dmaman->has_feature[BCM_DMA_FEATURE_FAST_ORD] = 0x0c; /* 2 & 3 */
+ dmaman->has_feature[BCM_DMA_FEATURE_BULK_ORD] = 0x01; /* 0 */
+ dmaman->has_feature[BCM_DMA_FEATURE_NORMAL_ORD] = 0xfe; /* 1 to 7 */
+ dmaman->has_feature[BCM_DMA_FEATURE_LITE_ORD] = 0x7f00; /* 8 to 14 */
+}
+
+static int vc_dmaman_chan_alloc(struct vc_dmaman *dmaman,
+ unsigned required_feature_set)
+{
+ u32 chans;
+ int chan = 0;
+ int feature;
+
+ chans = dmaman->chan_available;
+ for (feature = 0; feature < BCM_DMA_FEATURE_COUNT; feature++)
+ /* select the subset of available channels with the desired
+ features */
+ if (required_feature_set & (1 << feature))
+ chans &= dmaman->has_feature[feature];
+
+ if (!chans)
+ return -ENOENT;
+
+ /* return the ordinal of the first channel in the bitmap */
+ while (chans != 0 && (chans & 1) == 0) {
+ chans >>= 1;
+ chan++;
+ }
+ /* claim the channel */
+ dmaman->chan_available &= ~(1 << chan);
+
+ return chan;
+}
+
+static int vc_dmaman_chan_free(struct vc_dmaman *dmaman, int chan)
+{
+ if (chan < 0)
+ return -EINVAL;
+
+ if ((1 << chan) & dmaman->chan_available)
+ return -EIDRM;
+
+ dmaman->chan_available |= (1 << chan);
+
+ return 0;
+}
+
+/* DMA Manager Monitor */
+
+extern int bcm_dma_chan_alloc(unsigned required_feature_set,
+ void __iomem **out_dma_base, int *out_dma_irq)
+{
+ struct vc_dmaman *dmaman = g_dmaman;
+ struct platform_device *pdev = to_platform_device(dmaman_dev);
+ struct resource *r;
+ int chan;
+
+ if (!dmaman_dev)
+ return -ENODEV;
+
+ mutex_lock(&dmaman->lock);
+ chan = vc_dmaman_chan_alloc(dmaman, required_feature_set);
+ if (chan < 0)
+ goto out;
+
+ r = platform_get_resource(pdev, IORESOURCE_IRQ, (unsigned int)chan);
+ if (!r) {
+ dev_err(dmaman_dev, "failed to get irq for DMA channel %d\n",
+ chan);
+ vc_dmaman_chan_free(dmaman, chan);
+ chan = -ENOENT;
+ goto out;
+ }
+
+ *out_dma_base = BCM2708_DMA_CHANIO(dmaman->dma_base, chan);
+ *out_dma_irq = r->start;
+ dev_dbg(dmaman_dev,
+ "Legacy API allocated channel=%d, base=%p, irq=%i\n",
+ chan, *out_dma_base, *out_dma_irq);
+
+out:
+ mutex_unlock(&dmaman->lock);
+
+ return chan;
+}
+EXPORT_SYMBOL_GPL(bcm_dma_chan_alloc);
+
+extern int bcm_dma_chan_free(int channel)
+{
+ struct vc_dmaman *dmaman = g_dmaman;
+ int rc;
+
+ if (!dmaman_dev)
+ return -ENODEV;
+
+ mutex_lock(&dmaman->lock);
+ rc = vc_dmaman_chan_free(dmaman, channel);
+ mutex_unlock(&dmaman->lock);
+
+ return rc;
+}
+EXPORT_SYMBOL_GPL(bcm_dma_chan_free);
+
+int bcm_dmaman_probe(struct platform_device *pdev, void __iomem *base,
+ u32 chans_available)
+{
+ struct device *dev = &pdev->dev;
+ struct vc_dmaman *dmaman;
+
+ dmaman = devm_kzalloc(dev, sizeof(*dmaman), GFP_KERNEL);
+ if (!dmaman)
+ return -ENOMEM;
+
+ mutex_init(&dmaman->lock);
+ vc_dmaman_init(dmaman, base, chans_available);
+ g_dmaman = dmaman;
+ dmaman_dev = dev;
+
+ dev_info(dev, "DMA legacy API manager at %p, dmachans=0x%x\n",
+ base, chans_available);
+
+ return 0;
+}
+EXPORT_SYMBOL(bcm_dmaman_probe);
+
+int bcm_dmaman_remove(struct platform_device *pdev)
+{
+ dmaman_dev = NULL;
+
+ return 0;
+}
+EXPORT_SYMBOL(bcm_dmaman_remove);
+
+MODULE_LICENSE("GPL");
--- /dev/null
+++ b/include/linux/platform_data/dma-bcm2708.h
@@ -0,0 +1,143 @@
+/*
+ * Copyright (C) 2010 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _PLAT_BCM2708_DMA_H
+#define _PLAT_BCM2708_DMA_H
+
+/* DMA CS Control and Status bits */
+#define BCM2708_DMA_ACTIVE BIT(0)
+#define BCM2708_DMA_INT BIT(2)
+#define BCM2708_DMA_ISPAUSED BIT(4) /* Pause requested or not active */
+#define BCM2708_DMA_ISHELD BIT(5) /* Is held by DREQ flow control */
+#define BCM2708_DMA_ERR BIT(8)
+#define BCM2708_DMA_ABORT BIT(30) /* stop current CB, go to next, WO */
+#define BCM2708_DMA_RESET BIT(31) /* WO, self clearing */
+
+/* DMA control block "info" field bits */
+#define BCM2708_DMA_INT_EN BIT(0)
+#define BCM2708_DMA_TDMODE BIT(1)
+#define BCM2708_DMA_WAIT_RESP BIT(3)
+#define BCM2708_DMA_D_INC BIT(4)
+#define BCM2708_DMA_D_WIDTH BIT(5)
+#define BCM2708_DMA_D_DREQ BIT(6)
+#define BCM2708_DMA_S_INC BIT(8)
+#define BCM2708_DMA_S_WIDTH BIT(9)
+#define BCM2708_DMA_S_DREQ BIT(10)
+
+#define BCM2708_DMA_BURST(x) (((x) & 0xf) << 12)
+#define BCM2708_DMA_PER_MAP(x) ((x) << 16)
+#define BCM2708_DMA_WAITS(x) (((x) & 0x1f) << 21)
+
+#define BCM2708_DMA_DREQ_EMMC 11
+#define BCM2708_DMA_DREQ_SDHOST 13
+
+#define BCM2708_DMA_CS 0x00 /* Control and Status */
+#define BCM2708_DMA_ADDR 0x04
+/* the current control block appears in the following registers - read only */
+#define BCM2708_DMA_INFO 0x08
+#define BCM2708_DMA_SOURCE_AD 0x0c
+#define BCM2708_DMA_DEST_AD 0x10
+#define BCM2708_DMA_NEXTCB 0x1C
+#define BCM2708_DMA_DEBUG 0x20
+
+#define BCM2708_DMA4_CS (BCM2708_DMA_CHAN(4) + BCM2708_DMA_CS)
+#define BCM2708_DMA4_ADDR (BCM2708_DMA_CHAN(4) + BCM2708_DMA_ADDR)
+
+#define BCM2708_DMA_TDMODE_LEN(w, h) ((h) << 16 | (w))
+
+/* When listing features we can ask for when allocating DMA channels give
+ those with higher priority smaller ordinal numbers */
+#define BCM_DMA_FEATURE_FAST_ORD 0
+#define BCM_DMA_FEATURE_BULK_ORD 1
+#define BCM_DMA_FEATURE_NORMAL_ORD 2
+#define BCM_DMA_FEATURE_LITE_ORD 3
+#define BCM_DMA_FEATURE_FAST BIT(BCM_DMA_FEATURE_FAST_ORD)
+#define BCM_DMA_FEATURE_BULK BIT(BCM_DMA_FEATURE_BULK_ORD)
+#define BCM_DMA_FEATURE_NORMAL BIT(BCM_DMA_FEATURE_NORMAL_ORD)
+#define BCM_DMA_FEATURE_LITE BIT(BCM_DMA_FEATURE_LITE_ORD)
+#define BCM_DMA_FEATURE_COUNT 4
+
+struct bcm2708_dma_cb {
+ u32 info;
+ u32 src;
+ u32 dst;
+ u32 length;
+ u32 stride;
+ u32 next;
+ u32 pad[2];
+};
+
+struct scatterlist;
+struct platform_device;
+
+#ifdef CONFIG_DMA_BCM2708
+
+int bcm_sg_suitable_for_dma(struct scatterlist *sg_ptr, int sg_len);
+void bcm_dma_start(void __iomem *dma_chan_base, dma_addr_t control_block);
+void bcm_dma_wait_idle(void __iomem *dma_chan_base);
+bool bcm_dma_is_busy(void __iomem *dma_chan_base);
+int bcm_dma_abort(void __iomem *dma_chan_base);
+
+/* return channel no or -ve error */
+int bcm_dma_chan_alloc(unsigned preferred_feature_set,
+ void __iomem **out_dma_base, int *out_dma_irq);
+int bcm_dma_chan_free(int channel);
+
+int bcm_dmaman_probe(struct platform_device *pdev, void __iomem *base,
+ u32 chans_available);
+int bcm_dmaman_remove(struct platform_device *pdev);
+
+#else /* CONFIG_DMA_BCM2708 */
+
+static inline int bcm_sg_suitable_for_dma(struct scatterlist *sg_ptr,
+ int sg_len)
+{
+ return 0;
+}
+
+static inline void bcm_dma_start(void __iomem *dma_chan_base,
+ dma_addr_t control_block) { }
+
+static inline void bcm_dma_wait_idle(void __iomem *dma_chan_base) { }
+
+static inline bool bcm_dma_is_busy(void __iomem *dma_chan_base)
+{
+ return false;
+}
+
+static inline int bcm_dma_abort(void __iomem *dma_chan_base)
+{
+ return -EINVAL;
+}
+
+static inline int bcm_dma_chan_alloc(unsigned preferred_feature_set,
+ void __iomem **out_dma_base,
+ int *out_dma_irq)
+{
+ return -EINVAL;
+}
+
+static inline int bcm_dma_chan_free(int channel)
+{
+ return -EINVAL;
+}
+
+static inline int bcm_dmaman_probe(struct platform_device *pdev,
+ void __iomem *base, u32 chans_available)
+{
+ return 0;
+}
+
+static inline int bcm_dmaman_remove(struct platform_device *pdev)
+{
+ return 0;
+}
+
+#endif /* CONFIG_DMA_BCM2708 */
+
+#endif /* _PLAT_BCM2708_DMA_H */

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132
target/linux/brcm2708/patches-4.9/0036-mmc-Add-MMC_QUIRK_ERASE_BROKEN-for-some-cards.patch Normal file
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@ -0,0 +1,132 @@
From f6be5bc28ee258731e13b5e917d69f601d062014 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Wed, 11 May 2016 12:50:33 +0100
Subject: [PATCH] mmc: Add MMC_QUIRK_ERASE_BROKEN for some cards
Some SD cards have been found that corrupt data when small blocks
are erased. Add a quirk to indicate that ERASE should not be used,
and set it for cards of that type.
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
mmc: Apply QUIRK_BROKEN_ERASE to other capacities
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
mmc: Add card_quirks module parameter, log quirks
Use mmc_block.card_quirks to override the quirks for all SD or MMC
cards. The value is a bitfield using the bit positions defined in
include/linux/mmc/card.h. If the module parameter is placed in the
kernel command line (or bootargs) stored on the card then, assuming the
device only has one SD card interface, the override effectively becomes
card-specific.
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
drivers/mmc/card/block.c | 39 ++++++++++++++++++++++++++++++++++++---
drivers/mmc/core/core.c | 3 ++-
include/linux/mmc/card.h | 3 +++
3 files changed, 41 insertions(+), 4 deletions(-)
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -135,6 +135,13 @@ enum {
module_param(perdev_minors, int, 0444);
MODULE_PARM_DESC(perdev_minors, "Minors numbers to allocate per device");
+/*
+ * Allow quirks to be overridden for the current card
+ */
+static char *card_quirks;
+module_param(card_quirks, charp, 0644);
+MODULE_PARM_DESC(card_quirks, "Force the use of the indicated quirks (a bitfield)");
+
static inline int mmc_blk_part_switch(struct mmc_card *card,
struct mmc_blk_data *md);
static int get_card_status(struct mmc_card *card, u32 *status, int retries);
@@ -2573,6 +2580,17 @@ static const struct mmc_fixup blk_fixups
MMC_FIXUP("V10016", CID_MANFID_KINGSTON, CID_OEMID_ANY, add_quirk_mmc,
MMC_QUIRK_TRIM_BROKEN),
+ /*
+ * On some Kingston SD cards, multiple erases of less than 64
+ * sectors can cause corruption.
+ */
+ MMC_FIXUP("SD16G", 0x41, 0x3432, add_quirk_mmc,
+ MMC_QUIRK_ERASE_BROKEN),
+ MMC_FIXUP("SD32G", 0x41, 0x3432, add_quirk_mmc,
+ MMC_QUIRK_ERASE_BROKEN),
+ MMC_FIXUP("SD64G", 0x41, 0x3432, add_quirk_mmc,
+ MMC_QUIRK_ERASE_BROKEN),
+
END_FIXUP
};
@@ -2580,6 +2598,7 @@ static int mmc_blk_probe(struct mmc_card
{
struct mmc_blk_data *md, *part_md;
char cap_str[10];
+ char quirk_str[24];
/*
* Check that the card supports the command class(es) we need.
@@ -2587,7 +2606,16 @@ static int mmc_blk_probe(struct mmc_card
if (!(card->csd.cmdclass & CCC_BLOCK_READ))
return -ENODEV;
- mmc_fixup_device(card, blk_fixups);
+ if (card_quirks) {
+ unsigned long quirks;
+ if (kstrtoul(card_quirks, 0, &quirks) == 0)
+ card->quirks = (unsigned int)quirks;
+ else
+ pr_err("mmc_block: Invalid card_quirks parameter '%s'\n",
+ card_quirks);
+ }
+ else
+ mmc_fixup_device(card, blk_fixups);
md = mmc_blk_alloc(card);
if (IS_ERR(md))
@@ -2595,9 +2623,14 @@ static int mmc_blk_probe(struct mmc_card
string_get_size((u64)get_capacity(md->disk), 512, STRING_UNITS_2,
cap_str, sizeof(cap_str));
- pr_info("%s: %s %s %s %s\n",
+ if (card->quirks)
+ snprintf(quirk_str, sizeof(quirk_str),
+ " (quirks 0x%08x)", card->quirks);
+ else
+ quirk_str[0] = '\0';
+ pr_info("%s: %s %s %s%s%s\n",
md->disk->disk_name, mmc_card_id(card), mmc_card_name(card),
- cap_str, md->read_only ? "(ro)" : "");
+ cap_str, md->read_only ? " (ro)" : "", quirk_str);
if (mmc_blk_alloc_parts(card, md))
goto out;
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -2409,7 +2409,8 @@ EXPORT_SYMBOL(mmc_erase);
int mmc_can_erase(struct mmc_card *card)
{
if ((card->host->caps & MMC_CAP_ERASE) &&
- (card->csd.cmdclass & CCC_ERASE) && card->erase_size)
+ (card->csd.cmdclass & CCC_ERASE) && card->erase_size &&
+ !(card->quirks & MMC_QUIRK_ERASE_BROKEN))
return 1;
return 0;
}
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -283,6 +283,9 @@ struct mmc_card {
#define MMC_QUIRK_BROKEN_HPI (1<<13) /* Disable broken HPI support */
+#define MMC_QUIRK_ERASE_BROKEN (1<<31) /* Skip erase */
+
+
unsigned int erase_size; /* erase size in sectors */
unsigned int erase_shift; /* if erase unit is power 2 */
unsigned int pref_erase; /* in sectors */

1319
target/linux/brcm2708/patches-4.9/0037-cma-Add-vc_cma-driver-to-enable-use-of-CMA.patch Normal file
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File diff suppressed because it is too large Load Diff

2715
target/linux/brcm2708/patches-4.9/0038-bcm2708-alsa-sound-driver.patch Normal file
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File diff suppressed because it is too large Load Diff

516
target/linux/brcm2708/patches-4.9/0039-vc_mem-Add-vc_mem-driver-for-querying-firmware-memor.patch Normal file
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@ -0,0 +1,516 @@
From 079c7a4a324b1baa4e727c9e3dfacf503345bb18 Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Fri, 28 Oct 2016 15:36:43 +0100
Subject: [PATCH] vc_mem: Add vc_mem driver for querying firmware memory
addresses
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Signed-off-by: popcornmix <popcornmix@gmail.com>
BCM270x: Move vc_mem
Make the vc_mem module available for ARCH_BCM2835 by moving it.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
---
drivers/char/broadcom/Kconfig | 12 +-
drivers/char/broadcom/Makefile | 1 +
drivers/char/broadcom/vc_mem.c | 422 ++++++++++++++++++++++++++++++++++++++++
include/linux/broadcom/vc_mem.h | 35 ++++
4 files changed, 469 insertions(+), 1 deletion(-)
create mode 100644 drivers/char/broadcom/vc_mem.c
create mode 100644 include/linux/broadcom/vc_mem.h
--- a/drivers/char/broadcom/Kconfig
+++ b/drivers/char/broadcom/Kconfig
@@ -7,9 +7,19 @@ menuconfig BRCM_CHAR_DRIVERS
help
Broadcom's char drivers
+if BRCM_CHAR_DRIVERS
+
config BCM_VC_CMA
bool "Videocore CMA"
- depends on CMA && BRCM_CHAR_DRIVERS && BCM2708_VCHIQ
+ depends on CMA && BCM2708_VCHIQ
default n
help
Helper for videocore CMA access.
+
+config BCM2708_VCMEM
+ bool "Videocore Memory"
+ default y
+ help
+ Helper for videocore memory access and total size allocation.
+
+endif
--- a/drivers/char/broadcom/Makefile
+++ b/drivers/char/broadcom/Makefile
@@ -1 +1,2 @@
obj-$(CONFIG_BCM_VC_CMA) += vc_cma/
+obj-$(CONFIG_BCM2708_VCMEM) += vc_mem.o
--- /dev/null
+++ b/drivers/char/broadcom/vc_mem.c
@@ -0,0 +1,422 @@
+/*****************************************************************************
+* Copyright 2010 - 2011 Broadcom Corporation. All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/fs.h>
+#include <linux/device.h>
+#include <linux/cdev.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/debugfs.h>
+#include <asm/uaccess.h>
+#include <linux/dma-mapping.h>
+#include <linux/broadcom/vc_mem.h>
+
+#define DRIVER_NAME "vc-mem"
+
+// Device (/dev) related variables
+static dev_t vc_mem_devnum = 0;
+static struct class *vc_mem_class = NULL;
+static struct cdev vc_mem_cdev;
+static int vc_mem_inited = 0;
+
+#ifdef CONFIG_DEBUG_FS
+static struct dentry *vc_mem_debugfs_entry;
+#endif
+
+/*
+ * Videocore memory addresses and size
+ *
+ * Drivers that wish to know the videocore memory addresses and sizes should
+ * use these variables instead of the MM_IO_BASE and MM_ADDR_IO defines in
+ * headers. This allows the other drivers to not be tied down to a a certain
+ * address/size at compile time.
+ *
+ * In the future, the goal is to have the videocore memory virtual address and
+ * size be calculated at boot time rather than at compile time. The decision of
+ * where the videocore memory resides and its size would be in the hands of the
+ * bootloader (and/or kernel). When that happens, the values of these variables
+ * would be calculated and assigned in the init function.
+ */
+// in the 2835 VC in mapped above ARM, but ARM has full access to VC space
+unsigned long mm_vc_mem_phys_addr = 0x00000000;
+unsigned int mm_vc_mem_size = 0;
+unsigned int mm_vc_mem_base = 0;
+
+EXPORT_SYMBOL(mm_vc_mem_phys_addr);
+EXPORT_SYMBOL(mm_vc_mem_size);
+EXPORT_SYMBOL(mm_vc_mem_base);
+
+static uint phys_addr = 0;
+static uint mem_size = 0;
+static uint mem_base = 0;
+
+
+/****************************************************************************
+*
+* vc_mem_open
+*
+***************************************************************************/
+
+static int
+vc_mem_open(struct inode *inode, struct file *file)
+{
+ (void) inode;
+ (void) file;
+
+ pr_debug("%s: called file = 0x%p\n", __func__, file);
+
+ return 0;
+}
+
+/****************************************************************************
+*
+* vc_mem_release
+*
+***************************************************************************/
+
+static int
+vc_mem_release(struct inode *inode, struct file *file)
+{
+ (void) inode;
+ (void) file;
+
+ pr_debug("%s: called file = 0x%p\n", __func__, file);
+
+ return 0;
+}
+
+/****************************************************************************
+*
+* vc_mem_get_size
+*
+***************************************************************************/
+
+static void
+vc_mem_get_size(void)
+{
+}
+
+/****************************************************************************
+*
+* vc_mem_get_base
+*
+***************************************************************************/
+
+static void
+vc_mem_get_base(void)
+{
+}
+
+/****************************************************************************
+*
+* vc_mem_get_current_size
+*
+***************************************************************************/
+
+int
+vc_mem_get_current_size(void)
+{
+ return mm_vc_mem_size;
+}
+
+EXPORT_SYMBOL_GPL(vc_mem_get_current_size);
+
+/****************************************************************************
+*
+* vc_mem_ioctl
+*
+***************************************************************************/
+
+static long
+vc_mem_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ int rc = 0;
+
+ (void) cmd;
+ (void) arg;
+
+ pr_debug("%s: called file = 0x%p\n", __func__, file);
+
+ switch (cmd) {
+ case VC_MEM_IOC_MEM_PHYS_ADDR:
+ {
+ pr_debug("%s: VC_MEM_IOC_MEM_PHYS_ADDR=0x%p\n",
+ __func__, (void *) mm_vc_mem_phys_addr);
+
+ if (copy_to_user((void *) arg, &mm_vc_mem_phys_addr,
+ sizeof (mm_vc_mem_phys_addr)) != 0) {
+ rc = -EFAULT;
+ }
+ break;
+ }
+ case VC_MEM_IOC_MEM_SIZE:
+ {
+ // Get the videocore memory size first
+ vc_mem_get_size();
+
+ pr_debug("%s: VC_MEM_IOC_MEM_SIZE=%u\n", __func__,
+ mm_vc_mem_size);
+
+ if (copy_to_user((void *) arg, &mm_vc_mem_size,
+ sizeof (mm_vc_mem_size)) != 0) {
+ rc = -EFAULT;
+ }
+ break;
+ }
+ case VC_MEM_IOC_MEM_BASE:
+ {
+ // Get the videocore memory base
+ vc_mem_get_base();
+
+ pr_debug("%s: VC_MEM_IOC_MEM_BASE=%u\n", __func__,
+ mm_vc_mem_base);
+
+ if (copy_to_user((void *) arg, &mm_vc_mem_base,
+ sizeof (mm_vc_mem_base)) != 0) {
+ rc = -EFAULT;
+ }
+ break;
+ }
+ case VC_MEM_IOC_MEM_LOAD:
+ {
+ // Get the videocore memory base
+ vc_mem_get_base();
+
+ pr_debug("%s: VC_MEM_IOC_MEM_LOAD=%u\n", __func__,
+ mm_vc_mem_base);
+
+ if (copy_to_user((void *) arg, &mm_vc_mem_base,
+ sizeof (mm_vc_mem_base)) != 0) {
+ rc = -EFAULT;
+ }
+ break;
+ }
+ default:
+ {
+ return -ENOTTY;
+ }
+ }
+ pr_debug("%s: file = 0x%p returning %d\n", __func__, file, rc);
+
+ return rc;
+}
+
+/****************************************************************************
+*
+* vc_mem_mmap
+*
+***************************************************************************/
+
+static int
+vc_mem_mmap(struct file *filp, struct vm_area_struct *vma)
+{
+ int rc = 0;
+ unsigned long length = vma->vm_end - vma->vm_start;
+ unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
+
+ pr_debug("%s: vm_start = 0x%08lx vm_end = 0x%08lx vm_pgoff = 0x%08lx\n",
+ __func__, (long) vma->vm_start, (long) vma->vm_end,
+ (long) vma->vm_pgoff);
+
+ if (offset + length > mm_vc_mem_size) {
+ pr_err("%s: length %ld is too big\n", __func__, length);
+ return -EINVAL;
+ }
+ // Do not cache the memory map
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+
+ rc = remap_pfn_range(vma, vma->vm_start,
+ (mm_vc_mem_phys_addr >> PAGE_SHIFT) +
+ vma->vm_pgoff, length, vma->vm_page_prot);
+ if (rc != 0) {
+ pr_err("%s: remap_pfn_range failed (rc=%d)\n", __func__, rc);
+ }
+
+ return rc;
+}
+
+/****************************************************************************
+*
+* File Operations for the driver.
+*
+***************************************************************************/
+
+static const struct file_operations vc_mem_fops = {
+ .owner = THIS_MODULE,
+ .open = vc_mem_open,
+ .release = vc_mem_release,
+ .unlocked_ioctl = vc_mem_ioctl,
+ .mmap = vc_mem_mmap,
+};
+
+#ifdef CONFIG_DEBUG_FS
+static void vc_mem_debugfs_deinit(void)
+{
+ debugfs_remove_recursive(vc_mem_debugfs_entry);
+ vc_mem_debugfs_entry = NULL;
+}
+
+
+static int vc_mem_debugfs_init(
+ struct device *dev)
+{
+ vc_mem_debugfs_entry = debugfs_create_dir(DRIVER_NAME, NULL);
+ if (!vc_mem_debugfs_entry) {
+ dev_warn(dev, "could not create debugfs entry\n");
+ return -EFAULT;
+ }
+
+ if (!debugfs_create_x32("vc_mem_phys_addr",
+ 0444,
+ vc_mem_debugfs_entry,
+ (u32 *)&mm_vc_mem_phys_addr)) {
+ dev_warn(dev, "%s:could not create vc_mem_phys entry\n",
+ __func__);
+ goto fail;
+ }
+
+ if (!debugfs_create_x32("vc_mem_size",
+ 0444,
+ vc_mem_debugfs_entry,
+ (u32 *)&mm_vc_mem_size)) {
+ dev_warn(dev, "%s:could not create vc_mem_size entry\n",
+ __func__);
+ goto fail;
+ }
+
+ if (!debugfs_create_x32("vc_mem_base",
+ 0444,
+ vc_mem_debugfs_entry,
+ (u32 *)&mm_vc_mem_base)) {
+ dev_warn(dev, "%s:could not create vc_mem_base entry\n",
+ __func__);
+ goto fail;
+ }
+
+ return 0;
+
+fail:
+ vc_mem_debugfs_deinit();
+ return -EFAULT;
+}
+
+#endif /* CONFIG_DEBUG_FS */
+
+
+/****************************************************************************
+*
+* vc_mem_init
+*
+***************************************************************************/
+
+static int __init
+vc_mem_init(void)
+{
+ int rc = -EFAULT;
+ struct device *dev;
+
+ pr_debug("%s: called\n", __func__);
+
+ mm_vc_mem_phys_addr = phys_addr;
+ mm_vc_mem_size = mem_size;
+ mm_vc_mem_base = mem_base;
+
+ vc_mem_get_size();
+
+ pr_info("vc-mem: phys_addr:0x%08lx mem_base=0x%08x mem_size:0x%08x(%u MiB)\n",
+ mm_vc_mem_phys_addr, mm_vc_mem_base, mm_vc_mem_size, mm_vc_mem_size / (1024 * 1024));
+
+ if ((rc = alloc_chrdev_region(&vc_mem_devnum, 0, 1, DRIVER_NAME)) < 0) {
+ pr_err("%s: alloc_chrdev_region failed (rc=%d)\n",
+ __func__, rc);
+ goto out_err;
+ }
+
+ cdev_init(&vc_mem_cdev, &vc_mem_fops);
+ if ((rc = cdev_add(&vc_mem_cdev, vc_mem_devnum, 1)) != 0) {
+ pr_err("%s: cdev_add failed (rc=%d)\n", __func__, rc);
+ goto out_unregister;
+ }
+
+ vc_mem_class = class_create(THIS_MODULE, DRIVER_NAME);
+ if (IS_ERR(vc_mem_class)) {
+ rc = PTR_ERR(vc_mem_class);
+ pr_err("%s: class_create failed (rc=%d)\n", __func__, rc);
+ goto out_cdev_del;
+ }
+
+ dev = device_create(vc_mem_class, NULL, vc_mem_devnum, NULL,
+ DRIVER_NAME);
+ if (IS_ERR(dev)) {
+ rc = PTR_ERR(dev);
+ pr_err("%s: device_create failed (rc=%d)\n", __func__, rc);
+ goto out_class_destroy;
+ }
+
+#ifdef CONFIG_DEBUG_FS
+ /* don't fail if the debug entries cannot be created */
+ vc_mem_debugfs_init(dev);
+#endif
+
+ vc_mem_inited = 1;
+ return 0;
+
+ device_destroy(vc_mem_class, vc_mem_devnum);
+
+ out_class_destroy:
+ class_destroy(vc_mem_class);
+ vc_mem_class = NULL;
+
+ out_cdev_del:
+ cdev_del(&vc_mem_cdev);
+
+ out_unregister:
+ unregister_chrdev_region(vc_mem_devnum, 1);
+
+ out_err:
+ return -1;
+}
+
+/****************************************************************************
+*
+* vc_mem_exit
+*
+***************************************************************************/
+
+static void __exit
+vc_mem_exit(void)
+{
+ pr_debug("%s: called\n", __func__);
+
+ if (vc_mem_inited) {
+#if CONFIG_DEBUG_FS
+ vc_mem_debugfs_deinit();
+#endif
+ device_destroy(vc_mem_class, vc_mem_devnum);
+ class_destroy(vc_mem_class);
+ cdev_del(&vc_mem_cdev);
+ unregister_chrdev_region(vc_mem_devnum, 1);
+ }
+}
+
+module_init(vc_mem_init);
+module_exit(vc_mem_exit);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Broadcom Corporation");
+
+module_param(phys_addr, uint, 0644);
+module_param(mem_size, uint, 0644);
+module_param(mem_base, uint, 0644);
--- /dev/null
+++ b/include/linux/broadcom/vc_mem.h
@@ -0,0 +1,35 @@
+/*****************************************************************************
+* Copyright 2010 - 2011 Broadcom Corporation. All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+#ifndef _VC_MEM_H
+#define _VC_MEM_H
+
+#include <linux/ioctl.h>
+
+#define VC_MEM_IOC_MAGIC 'v'
+
+#define VC_MEM_IOC_MEM_PHYS_ADDR _IOR( VC_MEM_IOC_MAGIC, 0, unsigned long )
+#define VC_MEM_IOC_MEM_SIZE _IOR( VC_MEM_IOC_MAGIC, 1, unsigned int )
+#define VC_MEM_IOC_MEM_BASE _IOR( VC_MEM_IOC_MAGIC, 2, unsigned int )
+#define VC_MEM_IOC_MEM_LOAD _IOR( VC_MEM_IOC_MAGIC, 3, unsigned int )
+
+#if defined( __KERNEL__ )
+#define VC_MEM_TO_ARM_ADDR_MASK 0x3FFFFFFF
+
+extern unsigned long mm_vc_mem_phys_addr;
+extern unsigned int mm_vc_mem_size;
+extern int vc_mem_get_current_size( void );
+#endif
+
+#endif /* _VC_MEM_H */

4384
target/linux/brcm2708/patches-4.9/0040-vcsm-VideoCore-shared-memory-service-for-BCM2835.patch Normal file
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306
target/linux/brcm2708/patches-4.9/0041-Add-dev-gpiomem-device-for-rootless-user-GPIO-access.patch Normal file
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@ -0,0 +1,306 @@
From f035c5328fecc8970b9a9713cd345d56f5e81f98 Mon Sep 17 00:00:00 2001
From: Luke Wren <luke@raspberrypi.org>
Date: Fri, 21 Aug 2015 23:14:48 +0100
Subject: [PATCH] Add /dev/gpiomem device for rootless user GPIO access
Signed-off-by: Luke Wren <luke@raspberrypi.org>
bcm2835-gpiomem: Fix for ARCH_BCM2835 builds
Build on ARCH_BCM2835, and fail to probe if no IO resource.
See: https://github.com/raspberrypi/linux/issues/1154
---
drivers/char/broadcom/Kconfig | 9 ++
drivers/char/broadcom/Makefile | 3 +
drivers/char/broadcom/bcm2835-gpiomem.c | 260 ++++++++++++++++++++++++++++++++
3 files changed, 272 insertions(+)
create mode 100644 drivers/char/broadcom/bcm2835-gpiomem.c
--- a/drivers/char/broadcom/Kconfig
+++ b/drivers/char/broadcom/Kconfig
@@ -32,3 +32,12 @@ config BCM_VC_SM
help
Support for the VC shared memory on the Broadcom reference
design. Uses the VCHIQ stack.
+
+config BCM2835_DEVGPIOMEM
+ tristate "/dev/gpiomem rootless GPIO access via mmap() on the BCM2835"
+ default m
+ help
+ Provides users with root-free access to the GPIO registers
+ on the 2835. Calling mmap(/dev/gpiomem) will map the GPIO
+ register page to the user's pointer.
+
--- a/drivers/char/broadcom/Makefile
+++ b/drivers/char/broadcom/Makefile
@@ -1,3 +1,6 @@
obj-$(CONFIG_BCM_VC_CMA) += vc_cma/
obj-$(CONFIG_BCM2708_VCMEM) += vc_mem.o
obj-$(CONFIG_BCM_VC_SM) += vc_sm/
+
+obj-$(CONFIG_BCM2835_DEVGPIOMEM)+= bcm2835-gpiomem.o
+
--- /dev/null
+++ b/drivers/char/broadcom/bcm2835-gpiomem.c
@@ -0,0 +1,260 @@
+/**
+ * GPIO memory device driver
+ *
+ * Creates a chardev /dev/gpiomem which will provide user access to
+ * the BCM2835's GPIO registers when it is mmap()'d.
+ * No longer need root for user GPIO access, but without relaxing permissions
+ * on /dev/mem.
+ *
+ * Written by Luke Wren <luke@raspberrypi.org>
+ * Copyright (c) 2015, Raspberry Pi (Trading) Ltd.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ * to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/cdev.h>
+#include <linux/pagemap.h>
+#include <linux/io.h>
+
+#define DEVICE_NAME "bcm2835-gpiomem"
+#define DRIVER_NAME "gpiomem-bcm2835"
+#define DEVICE_MINOR 0
+
+struct bcm2835_gpiomem_instance {
+ unsigned long gpio_regs_phys;
+ struct device *dev;
+};
+
+static struct cdev bcm2835_gpiomem_cdev;
+static dev_t bcm2835_gpiomem_devid;
+static struct class *bcm2835_gpiomem_class;
+static struct device *bcm2835_gpiomem_dev;
+static struct bcm2835_gpiomem_instance *inst;
+
+
+/****************************************************************************
+*
+* GPIO mem chardev file ops
+*
+***************************************************************************/
+
+static int bcm2835_gpiomem_open(struct inode *inode, struct file *file)
+{
+ int dev = iminor(inode);
+ int ret = 0;
+
+ dev_info(inst->dev, "gpiomem device opened.");
+
+ if (dev != DEVICE_MINOR) {
+ dev_err(inst->dev, "Unknown minor device: %d", dev);
+ ret = -ENXIO;
+ }
+ return ret;
+}
+
+static int bcm2835_gpiomem_release(struct inode *inode, struct file *file)
+{
+ int dev = iminor(inode);
+ int ret = 0;
+
+ if (dev != DEVICE_MINOR) {
+ dev_err(inst->dev, "Unknown minor device %d", dev);
+ ret = -ENXIO;
+ }
+ return ret;
+}
+
+static const struct vm_operations_struct bcm2835_gpiomem_vm_ops = {
+#ifdef CONFIG_HAVE_IOREMAP_PROT
+ .access = generic_access_phys
+#endif
+};
+
+static int bcm2835_gpiomem_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ /* Ignore what the user says - they're getting the GPIO regs
+ whether they like it or not! */
+ unsigned long gpio_page = inst->gpio_regs_phys >> PAGE_SHIFT;
+
+ vma->vm_page_prot = phys_mem_access_prot(file, gpio_page,
+ PAGE_SIZE,
+ vma->vm_page_prot);
+ vma->vm_ops = &bcm2835_gpiomem_vm_ops;
+ if (remap_pfn_range(vma, vma->vm_start,
+ gpio_page,
+ PAGE_SIZE,
+ vma->vm_page_prot)) {
+ return -EAGAIN;
+ }
+ return 0;
+}
+
+static const struct file_operations
+bcm2835_gpiomem_fops = {
+ .owner = THIS_MODULE,
+ .open = bcm2835_gpiomem_open,
+ .release = bcm2835_gpiomem_release,
+ .mmap = bcm2835_gpiomem_mmap,
+};
+
+
+ /****************************************************************************
+*
+* Probe and remove functions
+*
+***************************************************************************/
+
+
+static int bcm2835_gpiomem_probe(struct platform_device *pdev)
+{
+ int err;
+ void *ptr_err;
+ struct device *dev = &pdev->dev;
+ struct resource *ioresource;
+
+ /* Allocate buffers and instance data */
+
+ inst = kzalloc(sizeof(struct bcm2835_gpiomem_instance), GFP_KERNEL);
+
+ if (!inst) {
+ err = -ENOMEM;
+ goto failed_inst_alloc;
+ }
+
+ inst->dev = dev;
+
+ ioresource = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (ioresource) {
+ inst->gpio_regs_phys = ioresource->start;
+ } else {
+ dev_err(inst->dev, "failed to get IO resource");
+ err = -ENOENT;
+ goto failed_get_resource;
+ }
+
+ /* Create character device entries */
+
+ err = alloc_chrdev_region(&bcm2835_gpiomem_devid,
+ DEVICE_MINOR, 1, DEVICE_NAME);
+ if (err != 0) {
+ dev_err(inst->dev, "unable to allocate device number");
+ goto failed_alloc_chrdev;
+ }
+ cdev_init(&bcm2835_gpiomem_cdev, &bcm2835_gpiomem_fops);
+ bcm2835_gpiomem_cdev.owner = THIS_MODULE;
+ err = cdev_add(&bcm2835_gpiomem_cdev, bcm2835_gpiomem_devid, 1);
+ if (err != 0) {
+ dev_err(inst->dev, "unable to register device");
+ goto failed_cdev_add;
+ }
+
+ /* Create sysfs entries */
+
+ bcm2835_gpiomem_class = class_create(THIS_MODULE, DEVICE_NAME);
+ ptr_err = bcm2835_gpiomem_class;
+ if (IS_ERR(ptr_err))
+ goto failed_class_create;
+
+ bcm2835_gpiomem_dev = device_create(bcm2835_gpiomem_class, NULL,
+ bcm2835_gpiomem_devid, NULL,
+ "gpiomem");
+ ptr_err = bcm2835_gpiomem_dev;
+ if (IS_ERR(ptr_err))
+ goto failed_device_create;
+
+ dev_info(inst->dev, "Initialised: Registers at 0x%08lx",
+ inst->gpio_regs_phys);
+
+ return 0;
+
+failed_device_create:
+ class_destroy(bcm2835_gpiomem_class);
+failed_class_create:
+ cdev_del(&bcm2835_gpiomem_cdev);
+ err = PTR_ERR(ptr_err);
+failed_cdev_add:
+ unregister_chrdev_region(bcm2835_gpiomem_devid, 1);
+failed_alloc_chrdev:
+failed_get_resource:
+ kfree(inst);
+failed_inst_alloc:
+ dev_err(inst->dev, "could not load bcm2835_gpiomem");
+ return err;
+}
+
+static int bcm2835_gpiomem_remove(struct platform_device *pdev)
+{
+ struct device *dev = inst->dev;
+
+ kfree(inst);
+ device_destroy(bcm2835_gpiomem_class, bcm2835_gpiomem_devid);
+ class_destroy(bcm2835_gpiomem_class);
+ cdev_del(&bcm2835_gpiomem_cdev);
+ unregister_chrdev_region(bcm2835_gpiomem_devid, 1);
+
+ dev_info(dev, "GPIO mem driver removed - OK");
+ return 0;
+}
+
+ /****************************************************************************
+*
+* Register the driver with device tree
+*
+***************************************************************************/
+
+static const struct of_device_id bcm2835_gpiomem_of_match[] = {
+ {.compatible = "brcm,bcm2835-gpiomem",},
+ { /* sentinel */ },
+};
+
+MODULE_DEVICE_TABLE(of, bcm2835_gpiomem_of_match);
+
+static struct platform_driver bcm2835_gpiomem_driver = {
+ .probe = bcm2835_gpiomem_probe,
+ .remove = bcm2835_gpiomem_remove,
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ .of_match_table = bcm2835_gpiomem_of_match,
+ },
+};
+
+module_platform_driver(bcm2835_gpiomem_driver);
+
+MODULE_ALIAS("platform:gpiomem-bcm2835");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("gpiomem driver for accessing GPIO from userspace");
+MODULE_AUTHOR("Luke Wren <luke@raspberrypi.org>");

1930
target/linux/brcm2708/patches-4.9/0042-Add-SMI-driver.patch Normal file
View File

File diff suppressed because it is too large Load Diff

169
target/linux/brcm2708/patches-4.9/0043-MISC-bcm2835-smi-use-clock-manager-and-fix-reload-is.patch Normal file
View File

@ -0,0 +1,169 @@
From 6e5058f6cb203dd31935ba03eeff0d98c7531bcf Mon Sep 17 00:00:00 2001
From: Martin Sperl <kernel@martin.sperl.org>
Date: Tue, 26 Apr 2016 14:59:21 +0000
Subject: [PATCH] MISC: bcm2835: smi: use clock manager and fix reload issues
Use clock manager instead of self-made clockmanager.
Also fix some error paths that showd up during development
(especially missing release of dma resources on rmmod)
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
---
drivers/misc/bcm2835_smi.c | 86 +++++++++++++++-------------------------------
1 file changed, 28 insertions(+), 58 deletions(-)
--- a/drivers/misc/bcm2835_smi.c
+++ b/drivers/misc/bcm2835_smi.c
@@ -34,6 +34,7 @@
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
+#include <linux/clk.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
@@ -62,7 +63,7 @@
struct bcm2835_smi_instance {
struct device *dev;
struct smi_settings settings;
- __iomem void *smi_regs_ptr, *cm_smi_regs_ptr;
+ __iomem void *smi_regs_ptr;
dma_addr_t smi_regs_busaddr;
struct dma_chan *dma_chan;
@@ -72,8 +73,7 @@ struct bcm2835_smi_instance {
struct scatterlist buffer_sgl;
- int clock_source;
- int clock_divisor;
+ struct clk *clk;
/* Sometimes we are called into in an atomic context (e.g. by
JFFS2 + MTD) so we can't use a mutex */
@@ -82,42 +82,6 @@ struct bcm2835_smi_instance {
/****************************************************************************
*
-* SMI clock manager setup
-*
-***************************************************************************/
-
-static inline void write_smi_cm_reg(struct bcm2835_smi_instance *inst,
- u32 val, unsigned reg)
-{
- writel(CM_PWD | val, inst->cm_smi_regs_ptr + reg);
-}
-
-static inline u32 read_smi_cm_reg(struct bcm2835_smi_instance *inst,
- unsigned reg)
-{
- return readl(inst->cm_smi_regs_ptr + reg);
-}
-
-static void smi_setup_clock(struct bcm2835_smi_instance *inst)
-{
- dev_dbg(inst->dev, "Setting up clock...");
- /* Disable SMI clock and wait for it to stop. */
- write_smi_cm_reg(inst, 0, CM_SMI_CTL);
- while (read_smi_cm_reg(inst, CM_SMI_CTL) & CM_SMI_CTL_BUSY)
- ;
-
- write_smi_cm_reg(inst, (inst->clock_divisor << CM_SMI_DIV_DIVI_OFFS),
- CM_SMI_DIV);
- write_smi_cm_reg(inst, (inst->clock_source << CM_SMI_CTL_SRC_OFFS),
- CM_SMI_CTL);
-
- /* Enable the clock */
- write_smi_cm_reg(inst, (inst->clock_source << CM_SMI_CTL_SRC_OFFS) |
- CM_SMI_CTL_ENAB, CM_SMI_CTL);
-}
-
-/****************************************************************************
-*
* SMI peripheral setup
*
***************************************************************************/
@@ -894,42 +858,40 @@ static int bcm2835_smi_probe(struct plat
struct device_node *node = dev->of_node;
struct resource *ioresource;
struct bcm2835_smi_instance *inst;
+ const __be32 *addr;
+ /* We require device tree support */
+ if (!node)
+ return -EINVAL;
/* Allocate buffers and instance data */
-
inst = devm_kzalloc(dev, sizeof(struct bcm2835_smi_instance),
GFP_KERNEL);
-
if (!inst)
return -ENOMEM;
inst->dev = dev;
spin_lock_init(&inst->transaction_lock);
- /* We require device tree support */
- if (!node)
- return -EINVAL;
-
ioresource = platform_get_resource(pdev, IORESOURCE_MEM, 0);
inst->smi_regs_ptr = devm_ioremap_resource(dev, ioresource);
- ioresource = platform_get_resource(pdev, IORESOURCE_MEM, 1);
- inst->cm_smi_regs_ptr = devm_ioremap_resource(dev, ioresource);
- inst->smi_regs_busaddr = be32_to_cpu(
- *of_get_address(node, 0, NULL, NULL));
- of_property_read_u32(node,
- "brcm,smi-clock-source",
- &inst->clock_source);
- of_property_read_u32(node,
- "brcm,smi-clock-divisor",
- &inst->clock_divisor);
+ if (IS_ERR(inst->smi_regs_ptr)) {
+ err = PTR_ERR(inst->smi_regs_ptr);
+ goto err;
+ }
+ addr = of_get_address(node, 0, NULL, NULL);
+ inst->smi_regs_busaddr = be32_to_cpu(addr);
err = bcm2835_smi_dma_setup(inst);
if (err)
- return err;
+ goto err;
- /* Finally, do peripheral setup */
+ /* request clock */
+ inst->clk = devm_clk_get(dev, NULL);
+ if (!inst->clk)
+ goto err;
+ clk_prepare_enable(inst->clk);
- smi_setup_clock(inst);
+ /* Finally, do peripheral setup */
smi_setup_regs(inst);
platform_set_drvdata(pdev, inst);
@@ -937,6 +899,9 @@ static int bcm2835_smi_probe(struct plat
dev_info(inst->dev, "initialised");
return 0;
+err:
+ kfree(inst);
+ return err;
}
/****************************************************************************
@@ -950,6 +915,11 @@ static int bcm2835_smi_remove(struct pla
struct bcm2835_smi_instance *inst = platform_get_drvdata(pdev);
struct device *dev = inst->dev;
+ dmaengine_terminate_all(inst->dma_chan);
+ dma_release_channel(inst->dma_chan);
+
+ clk_disable_unprepare(inst->clk);
+
dev_info(dev, "SMI device removed - OK");
return 0;
}

357
target/linux/brcm2708/patches-4.9/0044-Add-SMI-NAND-driver.patch Normal file
View File

@ -0,0 +1,357 @@
From 83148030b231764e7a5fc14bd2c9ccc6a104a872 Mon Sep 17 00:00:00 2001
From: Luke Wren <wren6991@gmail.com>
Date: Sat, 5 Sep 2015 01:16:10 +0100
Subject: [PATCH] Add SMI NAND driver
Signed-off-by: Luke Wren <wren6991@gmail.com>
---
.../bindings/mtd/brcm,bcm2835-smi-nand.txt | 42 ++++
drivers/mtd/nand/Kconfig | 7 +
drivers/mtd/nand/Makefile | 1 +
drivers/mtd/nand/bcm2835_smi_nand.c | 267 +++++++++++++++++++++
4 files changed, 317 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mtd/brcm,bcm2835-smi-nand.txt
create mode 100644 drivers/mtd/nand/bcm2835_smi_nand.c
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/brcm,bcm2835-smi-nand.txt
@@ -0,0 +1,42 @@
+* BCM2835 SMI NAND flash
+
+This driver is a shim between the BCM2835 SMI driver (SMI is a peripheral for
+talking to parallel register interfaces) and Linux's MTD layer.
+
+Required properties:
+- compatible: "brcm,bcm2835-smi-nand"
+- status: "okay"
+
+Optional properties:
+- partition@n, where n is an integer from a consecutive sequence starting at 0
+ - Difficult to store partition table on NAND device - normally put it
+ in the source code, kernel bootparams, or device tree (the best way!)
+ - Sub-properties:
+ - label: the partition name, as shown by mtdinfo /dev/mtd*
+ - reg: the size and offset of this partition.
+ - (optional) read-only: an empty property flagging as read only
+
+Example:
+
+nand: flash@0 {
+ compatible = "brcm,bcm2835-smi-nand";
+ status = "okay";
+
+ partition@0 {
+ label = "stage2";
+ // 128k
+ reg = <0 0x20000>;
+ read-only;
+ };
+ partition@1 {
+ label = "firmware";
+ // 16M
+ reg = <0x20000 0x1000000>;
+ read-only;
+ };
+ partition@2 {
+ label = "root";
+ // 2G
+ reg = <0x1020000 0x80000000>;
+ };
+};
\ No newline at end of file
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -41,6 +41,13 @@ config MTD_SM_COMMON
tristate
default n
+config MTD_NAND_BCM2835_SMI
+ tristate "Use Broadcom's Secondary Memory Interface as a NAND controller (BCM283x)"
+ depends on BCM2835_SMI
+ default m
+ help
+ Uses the BCM2835's SMI peripheral as a NAND controller.
+
config MTD_NAND_DENALI
tristate
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_MTD_NAND_DENALI) += denali
obj-$(CONFIG_MTD_NAND_DENALI_PCI) += denali_pci.o
obj-$(CONFIG_MTD_NAND_DENALI_DT) += denali_dt.o
obj-$(CONFIG_MTD_NAND_AU1550) += au1550nd.o
+obj-$(CONFIG_MTD_NAND_BCM2835_SMI) += bcm2835_smi_nand.o
obj-$(CONFIG_MTD_NAND_BF5XX) += bf5xx_nand.o
obj-$(CONFIG_MTD_NAND_S3C2410) += s3c2410.o
obj-$(CONFIG_MTD_NAND_DAVINCI) += davinci_nand.o
--- /dev/null
+++ b/drivers/mtd/nand/bcm2835_smi_nand.c
@@ -0,0 +1,267 @@
+/**
+ * NAND flash driver for Broadcom Secondary Memory Interface
+ *
+ * Written by Luke Wren <luke@raspberrypi.org>
+ * Copyright (c) 2015, Raspberry Pi (Trading) Ltd.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The names of the above-listed copyright holders may not be used
+ * to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2, as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/partitions.h>
+
+#include <linux/broadcom/bcm2835_smi.h>
+
+#define DEVICE_NAME "bcm2835-smi-nand"
+#define DRIVER_NAME "smi-nand-bcm2835"
+
+struct bcm2835_smi_nand_host {
+ struct bcm2835_smi_instance *smi_inst;
+ struct nand_chip nand_chip;
+ struct mtd_info mtd;
+ struct device *dev;
+};
+
+/****************************************************************************
+*
+* NAND functionality implementation
+*
+****************************************************************************/
+
+#define SMI_NAND_CLE_PIN 0x01
+#define SMI_NAND_ALE_PIN 0x02
+
+static inline void bcm2835_smi_nand_cmd_ctrl(struct mtd_info *mtd, int cmd,
+ unsigned int ctrl)
+{
+ uint32_t cmd32 = cmd;
+ uint32_t addr = ~(SMI_NAND_CLE_PIN | SMI_NAND_ALE_PIN);
+ struct bcm2835_smi_nand_host *host = dev_get_drvdata(mtd->dev.parent);
+ struct bcm2835_smi_instance *inst = host->smi_inst;
+
+ if (ctrl & NAND_CLE)
+ addr |= SMI_NAND_CLE_PIN;
+ if (ctrl & NAND_ALE)
+ addr |= SMI_NAND_ALE_PIN;
+ /* Lower ALL the CS pins! */
+ if (ctrl & NAND_NCE)
+ addr &= (SMI_NAND_CLE_PIN | SMI_NAND_ALE_PIN);
+
+ bcm2835_smi_set_address(inst, addr);
+
+ if (cmd != NAND_CMD_NONE)
+ bcm2835_smi_write_buf(inst, &cmd32, 1);
+}
+
+static inline uint8_t bcm2835_smi_nand_read_byte(struct mtd_info *mtd)
+{
+ uint8_t byte;
+ struct bcm2835_smi_nand_host *host = dev_get_drvdata(mtd->dev.parent);
+ struct bcm2835_smi_instance *inst = host->smi_inst;
+
+ bcm2835_smi_read_buf(inst, &byte, 1);
+ return byte;
+}
+
+static inline void bcm2835_smi_nand_write_byte(struct mtd_info *mtd,
+ uint8_t byte)
+{
+ struct bcm2835_smi_nand_host *host = dev_get_drvdata(mtd->dev.parent);
+ struct bcm2835_smi_instance *inst = host->smi_inst;
+
+ bcm2835_smi_write_buf(inst, &byte, 1);
+}
+
+static inline void bcm2835_smi_nand_write_buf(struct mtd_info *mtd,
+ const uint8_t *buf, int len)
+{
+ struct bcm2835_smi_nand_host *host = dev_get_drvdata(mtd->dev.parent);
+ struct bcm2835_smi_instance *inst = host->smi_inst;
+
+ bcm2835_smi_write_buf(inst, buf, len);
+}
+
+static inline void bcm2835_smi_nand_read_buf(struct mtd_info *mtd,
+ uint8_t *buf, int len)
+{
+ struct bcm2835_smi_nand_host *host = dev_get_drvdata(mtd->dev.parent);
+ struct bcm2835_smi_instance *inst = host->smi_inst;
+
+ bcm2835_smi_read_buf(inst, buf, len);
+}
+
+/****************************************************************************
+*
+* Probe and remove functions
+*
+***************************************************************************/
+
+static int bcm2835_smi_nand_probe(struct platform_device *pdev)
+{
+ struct bcm2835_smi_nand_host *host;
+ struct nand_chip *this;
+ struct mtd_info *mtd;
+ struct device *dev = &pdev->dev;
+ struct device_node *node = dev->of_node, *smi_node;
+ struct mtd_part_parser_data ppdata;
+ struct smi_settings *smi_settings;
+ struct bcm2835_smi_instance *smi_inst;
+ int ret = -ENXIO;
+
+ if (!node) {
+ dev_err(dev, "No device tree node supplied!");
+ return -EINVAL;
+ }
+
+ smi_node = of_parse_phandle(node, "smi_handle", 0);
+
+ /* Request use of SMI peripheral: */
+ smi_inst = bcm2835_smi_get(smi_node);
+
+ if (!smi_inst) {
+ dev_err(dev, "Could not register with SMI.");
+ return -EPROBE_DEFER;
+ }
+
+ /* Set SMI timing and bus width */
+
+ smi_settings = bcm2835_smi_get_settings_from_regs(smi_inst);
+
+ smi_settings->data_width = SMI_WIDTH_8BIT;
+ smi_settings->read_setup_time = 2;
+ smi_settings->read_hold_time = 1;
+ smi_settings->read_pace_time = 1;
+ smi_settings->read_strobe_time = 3;
+
+ smi_settings->write_setup_time = 2;
+ smi_settings->write_hold_time = 1;
+ smi_settings->write_pace_time = 1;
+ smi_settings->write_strobe_time = 3;
+
+ bcm2835_smi_set_regs_from_settings(smi_inst);
+
+ host = devm_kzalloc(dev, sizeof(struct bcm2835_smi_nand_host),
+ GFP_KERNEL);
+ if (!host)
+ return -ENOMEM;
+
+ host->dev = dev;
+ host->smi_inst = smi_inst;
+
+ platform_set_drvdata(pdev, host);
+
+ /* Link the structures together */
+
+ this = &host->nand_chip;
+ mtd = &host->mtd;
+ mtd->priv = this;
+ mtd->owner = THIS_MODULE;
+ mtd->dev.parent = dev;
+ mtd->name = DRIVER_NAME;
+
+ /* 20 us command delay time... */
+ this->chip_delay = 20;
+
+ this->priv = host;
+ this->cmd_ctrl = bcm2835_smi_nand_cmd_ctrl;
+ this->read_byte = bcm2835_smi_nand_read_byte;
+ this->write_byte = bcm2835_smi_nand_write_byte;
+ this->write_buf = bcm2835_smi_nand_write_buf;
+ this->read_buf = bcm2835_smi_nand_read_buf;
+
+ this->ecc.mode = NAND_ECC_SOFT;
+
+ /* Should never be accessed directly: */
+
+ this->IO_ADDR_R = (void *)0xdeadbeef;
+ this->IO_ADDR_W = (void *)0xdeadbeef;
+
+ /* First scan to find the device and get the page size */
+
+ if (nand_scan_ident(mtd, 1, NULL))
+ return -ENXIO;
+
+ /* Second phase scan */
+
+ if (nand_scan_tail(mtd))
+ return -ENXIO;
+
+ ret = mtd_device_parse_register(mtd, NULL, &ppdata, NULL, 0);
+ if (!ret)
+ return 0;
+
+ nand_release(mtd);
+ return -EINVAL;
+}
+
+static int bcm2835_smi_nand_remove(struct platform_device *pdev)
+{
+ struct bcm2835_smi_nand_host *host = platform_get_drvdata(pdev);
+
+ nand_release(&host->mtd);
+
+ return 0;
+}
+
+/****************************************************************************
+*
+* Register the driver with device tree
+*
+***************************************************************************/
+
+static const struct of_device_id bcm2835_smi_nand_of_match[] = {
+ {.compatible = "brcm,bcm2835-smi-nand",},
+ { /* sentinel */ }
+};
+
+MODULE_DEVICE_TABLE(of, bcm2835_smi_nand_of_match);
+
+static struct platform_driver bcm2835_smi_nand_driver = {
+ .probe = bcm2835_smi_nand_probe,
+ .remove = bcm2835_smi_nand_remove,
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ .of_match_table = bcm2835_smi_nand_of_match,
+ },
+};
+
+module_platform_driver(bcm2835_smi_nand_driver);
+
+MODULE_ALIAS("platform:smi-nand-bcm2835");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION
+ ("Driver for NAND chips using Broadcom Secondary Memory Interface");
+MODULE_AUTHOR("Luke Wren <luke@raspberrypi.org>");

855
target/linux/brcm2708/patches-4.9/0045-lirc-added-support-for-RaspberryPi-GPIO.patch Normal file
View File

@ -0,0 +1,855 @@
From e12517458be7d5ec0eccc2c23db2b78badd54587 Mon Sep 17 00:00:00 2001
From: Aron Szabo <aron@aron.ws>
Date: Sat, 16 Jun 2012 12:15:55 +0200
Subject: [PATCH] lirc: added support for RaspberryPi GPIO
lirc_rpi: Use read_current_timer to determine transmitter delay. Thanks to jjmz and others
See: https://github.com/raspberrypi/linux/issues/525
lirc: Remove restriction on gpio pins that can be used with lirc
Compute Module, for example could use different pins
lirc_rpi: Add parameter to specify input pin pull
Depending on the connected IR circuitry it might be desirable to change the
gpios internal pull from it pull-down default behaviour. Add a module
parameter to allow the user to set it explicitly.
Signed-off-by: Julian Scheel <julian@jusst.de>
lirc-rpi: Use the higher-level irq control functions
This module used to access the irq_chip methods of the
gpio controller directly, rather than going through the
standard enable_irq/irq_set_irq_type functions. This
caused problems on pinctrl-bcm2835 which only implements
the irq_enable/disable methods and not irq_unmask/mask.
lirc-rpi: Correct the interrupt usage
1) Correct the use of enable_irq (i.e. don't call it so often)
2) Correct the shutdown sequence.
3) Avoid a bcm2708_gpio driver quirk by setting the irq flags earlier
lirc-rpi: use getnstimeofday instead of read_current_timer
read_current_timer isn't guaranteed to return values in
microseconds, and indeed it doesn't on a Pi2.
Issue: linux#827
lirc-rpi: Add device tree support, and a suitable overlay
The overlay supports DT parameters that match the old module
parameters, except that gpio_in_pull should be set using the
strings "up", "down" or "off".
lirc-rpi: Also support pinctrl-bcm2835 in non-DT mode
fix auto-sense in lirc_rpi driver
On a Raspberry Pi 2, the lirc_rpi driver might receive spurious
interrupts and change it's low-active / high-active setting.
When this happens, the IR remote control stops working.
This patch disables this auto-detection if the 'sense' parameter
was set in the device tree, making the driver robust to such
spurious interrupts.
---
drivers/staging/media/lirc/Kconfig | 6 +
drivers/staging/media/lirc/Makefile | 1 +
drivers/staging/media/lirc/lirc_rpi.c | 734 ++++++++++++++++++++++++++++++++++
include/linux/platform_data/bcm2708.h | 23 ++
4 files changed, 764 insertions(+)
create mode 100644 drivers/staging/media/lirc/lirc_rpi.c
create mode 100644 include/linux/platform_data/bcm2708.h
--- a/drivers/staging/media/lirc/Kconfig
+++ b/drivers/staging/media/lirc/Kconfig
@@ -32,6 +32,12 @@ config LIRC_PARALLEL
help
Driver for Homebrew Parallel Port Receivers
+config LIRC_RPI
+ tristate "Homebrew GPIO Port Receiver/Transmitter for the RaspberryPi"
+ depends on LIRC
+ help
+ Driver for Homebrew GPIO Port Receiver/Transmitter for the RaspberryPi
+
config LIRC_SASEM
tristate "Sasem USB IR Remote"
depends on LIRC && USB
--- a/drivers/staging/media/lirc/Makefile
+++ b/drivers/staging/media/lirc/Makefile
@@ -6,6 +6,7 @@
obj-$(CONFIG_LIRC_BT829) += lirc_bt829.o
obj-$(CONFIG_LIRC_IMON) += lirc_imon.o
obj-$(CONFIG_LIRC_PARALLEL) += lirc_parallel.o
+obj-$(CONFIG_LIRC_RPI) += lirc_rpi.o
obj-$(CONFIG_LIRC_SASEM) += lirc_sasem.o
obj-$(CONFIG_LIRC_SERIAL) += lirc_serial.o
obj-$(CONFIG_LIRC_SIR) += lirc_sir.o
--- /dev/null
+++ b/drivers/staging/media/lirc/lirc_rpi.c
@@ -0,0 +1,734 @@
+/*
+ * lirc_rpi.c
+ *
+ * lirc_rpi - Device driver that records pulse- and pause-lengths
+ * (space-lengths) (just like the lirc_serial driver does)
+ * between GPIO interrupt events on the Raspberry Pi.
+ * Lots of code has been taken from the lirc_serial module,
+ * so I would like say thanks to the authors.
+ *
+ * Copyright (C) 2012 Aron Robert Szabo <aron@reon.hu>,
+ * Michael Bishop <cleverca22@gmail.com>
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/time.h>
+#include <linux/timex.h>
+#include <linux/timekeeping.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/irq.h>
+#include <linux/spinlock.h>
+#include <media/lirc.h>
+#include <media/lirc_dev.h>
+#include <linux/gpio.h>
+#include <linux/of_platform.h>
+#include <linux/platform_data/bcm2708.h>
+
+#define LIRC_DRIVER_NAME "lirc_rpi"
+#define RBUF_LEN 256
+#define LIRC_TRANSMITTER_LATENCY 50
+
+#ifndef MAX_UDELAY_MS
+#define MAX_UDELAY_US 5000
+#else
+#define MAX_UDELAY_US (MAX_UDELAY_MS*1000)
+#endif
+
+#define dprintk(fmt, args...) \
+ do { \
+ if (debug) \
+ printk(KERN_DEBUG LIRC_DRIVER_NAME ": " \
+ fmt, ## args); \
+ } while (0)
+
+/* module parameters */
+
+/* set the default GPIO input pin */
+static int gpio_in_pin = 18;
+/* set the default pull behaviour for input pin */
+static int gpio_in_pull = BCM2708_PULL_DOWN;
+/* set the default GPIO output pin */
+static int gpio_out_pin = 17;
+/* enable debugging messages */
+static bool debug;
+/* -1 = auto, 0 = active high, 1 = active low */
+static int sense = -1;
+/* use softcarrier by default */
+static bool softcarrier = 1;
+/* 0 = do not invert output, 1 = invert output */
+static bool invert = 0;
+
+struct gpio_chip *gpiochip;
+static int irq_num;
+static int auto_sense = 1;
+
+/* forward declarations */
+static long send_pulse(unsigned long length);
+static void send_space(long length);
+static void lirc_rpi_exit(void);
+
+static struct platform_device *lirc_rpi_dev;
+static struct timeval lasttv = { 0, 0 };
+static struct lirc_buffer rbuf;
+static spinlock_t lock;
+
+/* initialized/set in init_timing_params() */
+static unsigned int freq = 38000;
+static unsigned int duty_cycle = 50;
+static unsigned long period;
+static unsigned long pulse_width;
+static unsigned long space_width;
+
+static void safe_udelay(unsigned long usecs)
+{
+ while (usecs > MAX_UDELAY_US) {
+ udelay(MAX_UDELAY_US);
+ usecs -= MAX_UDELAY_US;
+ }
+ udelay(usecs);
+}
+
+static unsigned long read_current_us(void)
+{
+ struct timespec now;
+ getnstimeofday(&now);
+ return (now.tv_sec * 1000000) + (now.tv_nsec/1000);
+}
+
+static int init_timing_params(unsigned int new_duty_cycle,
+ unsigned int new_freq)
+{
+ if (1000 * 1000000L / new_freq * new_duty_cycle / 100 <=
+ LIRC_TRANSMITTER_LATENCY)
+ return -EINVAL;
+ if (1000 * 1000000L / new_freq * (100 - new_duty_cycle) / 100 <=
+ LIRC_TRANSMITTER_LATENCY)
+ return -EINVAL;
+ duty_cycle = new_duty_cycle;
+ freq = new_freq;
+ period = 1000 * 1000000L / freq;
+ pulse_width = period * duty_cycle / 100;
+ space_width = period - pulse_width;
+ dprintk("in init_timing_params, freq=%d pulse=%ld, "
+ "space=%ld\n", freq, pulse_width, space_width);
+ return 0;
+}
+
+static long send_pulse_softcarrier(unsigned long length)
+{
+ int flag;
+ unsigned long actual, target;
+ unsigned long actual_us, initial_us, target_us;
+
+ length *= 1000;
+
+ actual = 0; target = 0; flag = 0;
+ actual_us = read_current_us();
+
+ while (actual < length) {
+ if (flag) {
+ gpiochip->set(gpiochip, gpio_out_pin, invert);
+ target += space_width;
+ } else {
+ gpiochip->set(gpiochip, gpio_out_pin, !invert);
+ target += pulse_width;
+ }
+ initial_us = actual_us;
+ target_us = actual_us + (target - actual) / 1000;
+ /*
+ * Note - we've checked in ioctl that the pulse/space
+ * widths are big enough so that d is > 0
+ */
+ if ((int)(target_us - actual_us) > 0)
+ udelay(target_us - actual_us);
+ actual_us = read_current_us();
+ actual += (actual_us - initial_us) * 1000;
+ flag = !flag;
+ }
+ return (actual-length) / 1000;
+}
+
+static long send_pulse(unsigned long length)
+{
+ if (length <= 0)
+ return 0;
+
+ if (softcarrier) {
+ return send_pulse_softcarrier(length);
+ } else {
+ gpiochip->set(gpiochip, gpio_out_pin, !invert);
+ safe_udelay(length);
+ return 0;
+ }
+}
+
+static void send_space(long length)
+{
+ gpiochip->set(gpiochip, gpio_out_pin, invert);
+ if (length <= 0)
+ return;
+ safe_udelay(length);
+}
+
+static void rbwrite(int l)
+{
+ if (lirc_buffer_full(&rbuf)) {
+ /* no new signals will be accepted */
+ dprintk("Buffer overrun\n");
+ return;
+ }
+ lirc_buffer_write(&rbuf, (void *)&l);
+}
+
+static void frbwrite(int l)
+{
+ /* simple noise filter */
+ static int pulse, space;
+ static unsigned int ptr;
+
+ if (ptr > 0 && (l & PULSE_BIT)) {
+ pulse += l & PULSE_MASK;
+ if (pulse > 250) {
+ rbwrite(space);
+ rbwrite(pulse | PULSE_BIT);
+ ptr = 0;
+ pulse = 0;
+ }
+ return;
+ }
+ if (!(l & PULSE_BIT)) {
+ if (ptr == 0) {
+ if (l > 20000) {
+ space = l;
+ ptr++;
+ return;
+ }
+ } else {
+ if (l > 20000) {
+ space += pulse;
+ if (space > PULSE_MASK)
+ space = PULSE_MASK;
+ space += l;
+ if (space > PULSE_MASK)
+ space = PULSE_MASK;
+ pulse = 0;
+ return;
+ }
+ rbwrite(space);
+ rbwrite(pulse | PULSE_BIT);
+ ptr = 0;
+ pulse = 0;
+ }
+ }
+ rbwrite(l);
+}
+
+static irqreturn_t irq_handler(int i, void *blah, struct pt_regs *regs)
+{
+ struct timeval tv;
+ long deltv;
+ int data;
+ int signal;
+
+ /* use the GPIO signal level */
+ signal = gpiochip->get(gpiochip, gpio_in_pin);
+
+ if (sense != -1) {
+ /* get current time */
+ do_gettimeofday(&tv);
+
+ /* calc time since last interrupt in microseconds */
+ deltv = tv.tv_sec-lasttv.tv_sec;
+ if (tv.tv_sec < lasttv.tv_sec ||
+ (tv.tv_sec == lasttv.tv_sec &&
+ tv.tv_usec < lasttv.tv_usec)) {
+ printk(KERN_WARNING LIRC_DRIVER_NAME
+ ": AIEEEE: your clock just jumped backwards\n");
+ printk(KERN_WARNING LIRC_DRIVER_NAME
+ ": %d %d %lx %lx %lx %lx\n", signal, sense,
+ tv.tv_sec, lasttv.tv_sec,
+ tv.tv_usec, lasttv.tv_usec);
+ data = PULSE_MASK;
+ } else if (deltv > 15) {
+ data = PULSE_MASK; /* really long time */
+ if (!(signal^sense)) {
+ /* sanity check */
+ printk(KERN_DEBUG LIRC_DRIVER_NAME
+ ": AIEEEE: %d %d %lx %lx %lx %lx\n",
+ signal, sense, tv.tv_sec, lasttv.tv_sec,
+ tv.tv_usec, lasttv.tv_usec);
+ /*
+ * detecting pulse while this
+ * MUST be a space!
+ */
+ if (auto_sense) {
+ sense = sense ? 0 : 1;
+ }
+ }
+ } else {
+ data = (int) (deltv*1000000 +
+ (tv.tv_usec - lasttv.tv_usec));
+ }
+ frbwrite(signal^sense ? data : (data|PULSE_BIT));
+ lasttv = tv;
+ wake_up_interruptible(&rbuf.wait_poll);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int is_right_chip(struct gpio_chip *chip, void *data)
+{
+ dprintk("is_right_chip %s %d\n", chip->label, strcmp(data, chip->label));
+
+ if (strcmp(data, chip->label) == 0)
+ return 1;
+ return 0;
+}
+
+static inline int read_bool_property(const struct device_node *np,
+ const char *propname,
+ bool *out_value)
+{
+ u32 value = 0;
+ int err = of_property_read_u32(np, propname, &value);
+ if (err == 0)
+ *out_value = (value != 0);
+ return err;
+}
+
+static void read_pin_settings(struct device_node *node)
+{
+ u32 pin;
+ int index;
+
+ for (index = 0;
+ of_property_read_u32_index(
+ node,
+ "brcm,pins",
+ index,
+ &pin) == 0;
+ index++) {
+ u32 function;
+ int err;
+ err = of_property_read_u32_index(
+ node,
+ "brcm,function",
+ index,
+ &function);
+ if (err == 0) {
+ if (function == 1) /* Output */
+ gpio_out_pin = pin;
+ else if (function == 0) /* Input */
+ gpio_in_pin = pin;
+ }
+ }
+}
+
+static int init_port(void)
+{
+ int i, nlow, nhigh;
+ struct device_node *node;
+
+ node = lirc_rpi_dev->dev.of_node;
+
+ gpiochip = gpiochip_find("bcm2708_gpio", is_right_chip);
+
+ /*
+ * Because of the lack of a setpull function, only support
+ * pinctrl-bcm2835 if using device tree.
+ */
+ if (!gpiochip && node)
+ gpiochip = gpiochip_find("pinctrl-bcm2835", is_right_chip);
+
+ if (!gpiochip) {
+ pr_err(LIRC_DRIVER_NAME ": gpio chip not found!\n");
+ return -ENODEV;
+ }
+
+ if (node) {
+ struct device_node *pins_node;
+
+ pins_node = of_parse_phandle(node, "pinctrl-0", 0);
+ if (!pins_node) {
+ printk(KERN_ERR LIRC_DRIVER_NAME
+ ": pinctrl settings not found!\n");
+ return -EINVAL;
+ }
+
+ read_pin_settings(pins_node);
+
+ of_property_read_u32(node, "rpi,sense", &sense);
+
+ read_bool_property(node, "rpi,softcarrier", &softcarrier);
+
+ read_bool_property(node, "rpi,invert", &invert);
+
+ read_bool_property(node, "rpi,debug", &debug);
+
+ } else {
+ return -EINVAL;
+ }
+
+ gpiochip->set(gpiochip, gpio_out_pin, invert);
+
+ irq_num = gpiochip->to_irq(gpiochip, gpio_in_pin);
+ dprintk("to_irq %d\n", irq_num);
+
+ /* if pin is high, then this must be an active low receiver. */
+ if (sense == -1) {
+ /* wait 1/2 sec for the power supply */
+ msleep(500);
+
+ /*
+ * probe 9 times every 0.04s, collect "votes" for
+ * active high/low
+ */
+ nlow = 0;
+ nhigh = 0;
+ for (i = 0; i < 9; i++) {
+ if (gpiochip->get(gpiochip, gpio_in_pin))
+ nlow++;
+ else
+ nhigh++;
+ msleep(40);
+ }
+ sense = (nlow >= nhigh ? 1 : 0);
+ printk(KERN_INFO LIRC_DRIVER_NAME
+ ": auto-detected active %s receiver on GPIO pin %d\n",
+ sense ? "low" : "high", gpio_in_pin);
+ } else {
+ printk(KERN_INFO LIRC_DRIVER_NAME
+ ": manually using active %s receiver on GPIO pin %d\n",
+ sense ? "low" : "high", gpio_in_pin);
+ auto_sense = 0;
+ }
+
+ return 0;
+}
+
+// called when the character device is opened
+static int set_use_inc(void *data)
+{
+ int result;
+
+ /* initialize timestamp */
+ do_gettimeofday(&lasttv);
+
+ result = request_irq(irq_num,
+ (irq_handler_t) irq_handler,
+ IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING,
+ LIRC_DRIVER_NAME, (void*) 0);
+
+ switch (result) {
+ case -EBUSY:
+ printk(KERN_ERR LIRC_DRIVER_NAME
+ ": IRQ %d is busy\n",
+ irq_num);
+ return -EBUSY;
+ case -EINVAL:
+ printk(KERN_ERR LIRC_DRIVER_NAME
+ ": Bad irq number or handler\n");
+ return -EINVAL;
+ default:
+ dprintk("Interrupt %d obtained\n",
+ irq_num);
+ break;
+ };
+
+ /* initialize pulse/space widths */
+ init_timing_params(duty_cycle, freq);
+
+ return 0;
+}
+
+static void set_use_dec(void *data)
+{
+ /* GPIO Pin Falling/Rising Edge Detect Disable */
+ irq_set_irq_type(irq_num, 0);
+ disable_irq(irq_num);
+
+ free_irq(irq_num, (void *) 0);
+
+ dprintk(KERN_INFO LIRC_DRIVER_NAME
+ ": freed IRQ %d\n", irq_num);
+}
+
+static ssize_t lirc_write(struct file *file, const char *buf,
+ size_t n, loff_t *ppos)
+{
+ int i, count;
+ unsigned long flags;
+ long delta = 0;
+ int *wbuf;
+
+ count = n / sizeof(int);
+ if (n % sizeof(int) || count % 2 == 0)
+ return -EINVAL;
+ wbuf = memdup_user(buf, n);
+ if (IS_ERR(wbuf))
+ return PTR_ERR(wbuf);
+ spin_lock_irqsave(&lock, flags);
+
+ for (i = 0; i < count; i++) {
+ if (i%2)
+ send_space(wbuf[i] - delta);
+ else
+ delta = send_pulse(wbuf[i]);
+ }
+ gpiochip->set(gpiochip, gpio_out_pin, invert);
+
+ spin_unlock_irqrestore(&lock, flags);
+ kfree(wbuf);
+ return n;
+}
+
+static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
+{
+ int result;
+ __u32 value;
+
+ switch (cmd) {
+ case LIRC_GET_SEND_MODE:
+ return -ENOIOCTLCMD;
+ break;
+
+ case LIRC_SET_SEND_MODE:
+ result = get_user(value, (__u32 *) arg);
+ if (result)
+ return result;
+ /* only LIRC_MODE_PULSE supported */
+ if (value != LIRC_MODE_PULSE)
+ return -ENOSYS;
+ break;
+
+ case LIRC_GET_LENGTH:
+ return -ENOSYS;
+ break;
+
+ case LIRC_SET_SEND_DUTY_CYCLE:
+ dprintk("SET_SEND_DUTY_CYCLE\n");
+ result = get_user(value, (__u32 *) arg);
+ if (result)
+ return result;
+ if (value <= 0 || value > 100)
+ return -EINVAL;
+ return init_timing_params(value, freq);
+ break;
+
+ case LIRC_SET_SEND_CARRIER:
+ dprintk("SET_SEND_CARRIER\n");
+ result = get_user(value, (__u32 *) arg);
+ if (result)
+ return result;
+ if (value > 500000 || value < 20000)
+ return -EINVAL;
+ return init_timing_params(duty_cycle, value);
+ break;
+
+ default:
+ return lirc_dev_fop_ioctl(filep, cmd, arg);
+ }
+ return 0;
+}
+
+static const struct file_operations lirc_fops = {
+ .owner = THIS_MODULE,
+ .write = lirc_write,
+ .unlocked_ioctl = lirc_ioctl,
+ .read = lirc_dev_fop_read,
+ .poll = lirc_dev_fop_poll,
+ .open = lirc_dev_fop_open,
+ .release = lirc_dev_fop_close,
+ .llseek = no_llseek,
+};
+
+static struct lirc_driver driver = {
+ .name = LIRC_DRIVER_NAME,
+ .minor = -1,
+ .code_length = 1,
+ .sample_rate = 0,
+ .data = NULL,
+ .add_to_buf = NULL,
+ .rbuf = &rbuf,
+ .set_use_inc = set_use_inc,
+ .set_use_dec = set_use_dec,
+ .fops = &lirc_fops,
+ .dev = NULL,
+ .owner = THIS_MODULE,
+};
+
+static const struct of_device_id lirc_rpi_of_match[] = {
+ { .compatible = "rpi,lirc-rpi", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, lirc_rpi_of_match);
+
+static struct platform_driver lirc_rpi_driver = {
+ .driver = {
+ .name = LIRC_DRIVER_NAME,
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(lirc_rpi_of_match),
+ },
+};
+
+static int __init lirc_rpi_init(void)
+{
+ struct device_node *node;
+ int result;
+
+ /* Init read buffer. */
+ result = lirc_buffer_init(&rbuf, sizeof(int), RBUF_LEN);
+ if (result < 0)
+ return -ENOMEM;
+
+ result = platform_driver_register(&lirc_rpi_driver);
+ if (result) {
+ printk(KERN_ERR LIRC_DRIVER_NAME
+ ": lirc register returned %d\n", result);
+ goto exit_buffer_free;
+ }
+
+ node = of_find_compatible_node(NULL, NULL,
+ lirc_rpi_of_match[0].compatible);
+
+ if (node) {
+ /* DT-enabled */
+ lirc_rpi_dev = of_find_device_by_node(node);
+ WARN_ON(lirc_rpi_dev->dev.of_node != node);
+ of_node_put(node);
+ }
+ else {
+ lirc_rpi_dev = platform_device_alloc(LIRC_DRIVER_NAME, 0);
+ if (!lirc_rpi_dev) {
+ result = -ENOMEM;
+ goto exit_driver_unregister;
+ }
+
+ result = platform_device_add(lirc_rpi_dev);
+ if (result)
+ goto exit_device_put;
+ }
+
+ return 0;
+
+ exit_device_put:
+ platform_device_put(lirc_rpi_dev);
+
+ exit_driver_unregister:
+ platform_driver_unregister(&lirc_rpi_driver);
+
+ exit_buffer_free:
+ lirc_buffer_free(&rbuf);
+
+ return result;
+}
+
+static void lirc_rpi_exit(void)
+{
+ if (!lirc_rpi_dev->dev.of_node)
+ platform_device_unregister(lirc_rpi_dev);
+ platform_driver_unregister(&lirc_rpi_driver);
+ lirc_buffer_free(&rbuf);
+}
+
+static int __init lirc_rpi_init_module(void)
+{
+ int result;
+
+ result = lirc_rpi_init();
+ if (result)
+ return result;
+
+ result = init_port();
+ if (result < 0)
+ goto exit_rpi;
+
+ driver.features = LIRC_CAN_SET_SEND_DUTY_CYCLE |
+ LIRC_CAN_SET_SEND_CARRIER |
+ LIRC_CAN_SEND_PULSE |
+ LIRC_CAN_REC_MODE2;
+
+ driver.dev = &lirc_rpi_dev->dev;
+ driver.minor = lirc_register_driver(&driver);
+
+ if (driver.minor < 0) {
+ printk(KERN_ERR LIRC_DRIVER_NAME
+ ": device registration failed with %d\n", result);
+ result = -EIO;
+ goto exit_rpi;
+ }
+
+ printk(KERN_INFO LIRC_DRIVER_NAME ": driver registered!\n");
+
+ return 0;
+
+ exit_rpi:
+ lirc_rpi_exit();
+
+ return result;
+}
+
+static void __exit lirc_rpi_exit_module(void)
+{
+ lirc_unregister_driver(driver.minor);
+
+ gpio_free(gpio_out_pin);
+ gpio_free(gpio_in_pin);
+
+ lirc_rpi_exit();
+
+ printk(KERN_INFO LIRC_DRIVER_NAME ": cleaned up module\n");
+}
+
+module_init(lirc_rpi_init_module);
+module_exit(lirc_rpi_exit_module);
+
+MODULE_DESCRIPTION("Infra-red receiver and blaster driver for Raspberry Pi GPIO.");
+MODULE_AUTHOR("Aron Robert Szabo <aron@reon.hu>");
+MODULE_AUTHOR("Michael Bishop <cleverca22@gmail.com>");
+MODULE_LICENSE("GPL");
+
+module_param(gpio_out_pin, int, S_IRUGO);
+MODULE_PARM_DESC(gpio_out_pin, "GPIO output/transmitter pin number of the BCM"
+ " processor. (default 17");
+
+module_param(gpio_in_pin, int, S_IRUGO);
+MODULE_PARM_DESC(gpio_in_pin, "GPIO input pin number of the BCM processor."
+ " (default 18");
+
+module_param(gpio_in_pull, int, S_IRUGO);
+MODULE_PARM_DESC(gpio_in_pull, "GPIO input pin pull configuration."
+ " (0 = off, 1 = up, 2 = down, default down)");
+
+module_param(sense, int, S_IRUGO);
+MODULE_PARM_DESC(sense, "Override autodetection of IR receiver circuit"
+ " (0 = active high, 1 = active low )");
+
+module_param(softcarrier, bool, S_IRUGO);
+MODULE_PARM_DESC(softcarrier, "Software carrier (0 = off, 1 = on, default on)");
+
+module_param(invert, bool, S_IRUGO);
+MODULE_PARM_DESC(invert, "Invert output (0 = off, 1 = on, default off");
+
+module_param(debug, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Enable debugging messages");
--- /dev/null
+++ b/include/linux/platform_data/bcm2708.h
@@ -0,0 +1,23 @@
+/*
+ * include/linux/platform_data/bcm2708.h
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * (C) 2014 Julian Scheel <julian@jusst.de>
+ *
+ */
+#ifndef __BCM2708_H_
+#define __BCM2708_H_
+
+typedef enum {
+ BCM2708_PULL_OFF,
+ BCM2708_PULL_UP,
+ BCM2708_PULL_DOWN
+} bcm2708_gpio_pull_t;
+
+extern int bcm2708_gpio_setpull(struct gpio_chip *gc, unsigned offset,
+ bcm2708_gpio_pull_t value);
+
+#endif

262
target/linux/brcm2708/patches-4.9/0046-Add-cpufreq-driver.patch Normal file
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@ -0,0 +1,262 @@
From 91eeb6693671b5ae0220f4a276b84e6597266cb9 Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Wed, 3 Jul 2013 00:49:20 +0100
Subject: [PATCH] Add cpufreq driver
Signed-off-by: popcornmix <popcornmix@gmail.com>
---
drivers/cpufreq/Kconfig.arm | 9 ++
drivers/cpufreq/Makefile | 1 +
drivers/cpufreq/bcm2835-cpufreq.c | 218 ++++++++++++++++++++++++++++++++++++++
3 files changed, 228 insertions(+)
create mode 100644 drivers/cpufreq/bcm2835-cpufreq.c
--- a/drivers/cpufreq/Kconfig.arm
+++ b/drivers/cpufreq/Kconfig.arm
@@ -220,6 +220,15 @@ config ARM_STI_CPUFREQ
this config option if you wish to add CPUFreq support for STi based
SoCs.
+config ARM_BCM2835_CPUFREQ
+ depends on RASPBERRYPI_FIRMWARE
+ bool "BCM2835 Driver"
+ default y
+ help
+ This adds the CPUFreq driver for BCM2835
+
+ If in doubt, say N.
+
config ARM_TEGRA20_CPUFREQ
bool "Tegra20 CPUFreq support"
depends on ARCH_TEGRA
--- a/drivers/cpufreq/Makefile
+++ b/drivers/cpufreq/Makefile
@@ -75,6 +75,7 @@ obj-$(CONFIG_ARM_SA1110_CPUFREQ) += sa11
obj-$(CONFIG_ARM_SCPI_CPUFREQ) += scpi-cpufreq.o
obj-$(CONFIG_ARM_SPEAR_CPUFREQ) += spear-cpufreq.o
obj-$(CONFIG_ARM_STI_CPUFREQ) += sti-cpufreq.o
+obj-$(CONFIG_ARM_BCM2835_CPUFREQ) += bcm2835-cpufreq.o
obj-$(CONFIG_ARM_TEGRA20_CPUFREQ) += tegra20-cpufreq.o
obj-$(CONFIG_ARM_TEGRA124_CPUFREQ) += tegra124-cpufreq.o
obj-$(CONFIG_ARM_VEXPRESS_SPC_CPUFREQ) += vexpress-spc-cpufreq.o
--- /dev/null
+++ b/drivers/cpufreq/bcm2835-cpufreq.c
@@ -0,0 +1,218 @@
+/*****************************************************************************
+* Copyright 2011 Broadcom Corporation. All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+/*****************************************************************************
+* FILENAME: bcm2835-cpufreq.h
+* DESCRIPTION: This driver dynamically manages the CPU Frequency of the ARM
+* processor. Messages are sent to Videocore either setting or requesting the
+* frequency of the ARM in order to match an appropiate frequency to the current
+* usage of the processor. The policy which selects the frequency to use is
+* defined in the kernel .config file, but can be changed during runtime.
+*****************************************************************************/
+
+/* ---------- INCLUDES ---------- */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/cpufreq.h>
+#include <soc/bcm2835/raspberrypi-firmware.h>
+
+/* ---------- DEFINES ---------- */
+/*#define CPUFREQ_DEBUG_ENABLE*/ /* enable debugging */
+#define MODULE_NAME "bcm2835-cpufreq"
+
+#define VCMSG_ID_ARM_CLOCK 0x000000003 /* Clock/Voltage ID's */
+
+/* debug printk macros */
+#ifdef CPUFREQ_DEBUG_ENABLE
+#define print_debug(fmt,...) pr_debug("%s:%s:%d: "fmt, MODULE_NAME, __func__, __LINE__, ##__VA_ARGS__)
+#else
+#define print_debug(fmt,...)
+#endif
+#define print_err(fmt,...) pr_err("%s:%s:%d: "fmt, MODULE_NAME, __func__,__LINE__, ##__VA_ARGS__)
+#define print_info(fmt,...) pr_info("%s: "fmt, MODULE_NAME, ##__VA_ARGS__)
+
+/* ---------- GLOBALS ---------- */
+static struct cpufreq_driver bcm2835_cpufreq_driver; /* the cpufreq driver global */
+static unsigned int min_frequency, max_frequency;
+static struct cpufreq_frequency_table bcm2835_freq_table[3];
+
+/*
+ ===============================================
+ clk_rate either gets or sets the clock rates.
+ ===============================================
+*/
+
+static int bcm2835_cpufreq_clock_property(u32 tag, u32 id, u32 *val)
+{
+ struct rpi_firmware *fw = rpi_firmware_get(NULL);
+ struct {
+ u32 id;
+ u32 val;
+ } packet;
+ int ret;
+
+ packet.id = id;
+ packet.val = *val;
+ ret = rpi_firmware_property(fw, tag, &packet, sizeof(packet));
+ if (ret)
+ return ret;
+
+ *val = packet.val;
+
+ return 0;
+}
+
+static uint32_t bcm2835_cpufreq_set_clock(int cur_rate, int arm_rate)
+{
+ u32 rate = arm_rate * 1000;
+ int ret;
+
+ ret = bcm2835_cpufreq_clock_property(RPI_FIRMWARE_SET_CLOCK_RATE, VCMSG_ID_ARM_CLOCK, &rate);
+ if (ret) {
+ print_err("Failed to set clock: %d (%d)\n", arm_rate, ret);
+ return 0;
+ }
+
+ rate /= 1000;
+ print_debug("Setting new frequency = %d -> %d (actual %d)\n", cur_rate, arm_rate, rate);
+
+ return rate;
+}
+
+static uint32_t bcm2835_cpufreq_get_clock(int tag)
+{
+ u32 rate;
+ int ret;
+
+ ret = bcm2835_cpufreq_clock_property(tag, VCMSG_ID_ARM_CLOCK, &rate);
+ if (ret) {
+ print_err("Failed to get clock (%d)\n", ret);
+ return 0;
+ }
+
+ rate /= 1000;
+ print_debug("%s frequency = %u\n",
+ tag == RPI_FIRMWARE_GET_CLOCK_RATE ? "Current":
+ tag == RPI_FIRMWARE_GET_MIN_CLOCK_RATE ? "Min":
+ tag == RPI_FIRMWARE_GET_MAX_CLOCK_RATE ? "Max":
+ "Unexpected", rate);
+
+ return rate;
+}
+
+/*
+ ====================================================
+ Module Initialisation registers the cpufreq driver
+ ====================================================
+*/
+static int __init bcm2835_cpufreq_module_init(void)
+{
+ print_debug("IN\n");
+ return cpufreq_register_driver(&bcm2835_cpufreq_driver);
+}
+
+/*
+ =============
+ Module exit
+ =============
+*/
+static void __exit bcm2835_cpufreq_module_exit(void)
+{
+ print_debug("IN\n");
+ cpufreq_unregister_driver(&bcm2835_cpufreq_driver);
+ return;
+}
+
+/*
+ ==============================================================
+ Initialisation function sets up the CPU policy for first use
+ ==============================================================
+*/
+static int bcm2835_cpufreq_driver_init(struct cpufreq_policy *policy)
+{
+ /* measured value of how long it takes to change frequency */
+ const unsigned int transition_latency = 355000; /* ns */
+
+ if (!rpi_firmware_get(NULL)) {
+ print_err("Firmware is not available\n");
+ return -ENODEV;
+ }
+
+ /* now find out what the maximum and minimum frequencies are */
+ min_frequency = bcm2835_cpufreq_get_clock(RPI_FIRMWARE_GET_MIN_CLOCK_RATE);
+ max_frequency = bcm2835_cpufreq_get_clock(RPI_FIRMWARE_GET_MAX_CLOCK_RATE);
+
+ if (min_frequency == max_frequency) {
+ bcm2835_freq_table[0].frequency = min_frequency;
+ bcm2835_freq_table[1].frequency = CPUFREQ_TABLE_END;
+ } else {
+ bcm2835_freq_table[0].frequency = min_frequency;
+ bcm2835_freq_table[1].frequency = max_frequency;
+ bcm2835_freq_table[2].frequency = CPUFREQ_TABLE_END;
+ }
+
+ print_info("min=%d max=%d\n", min_frequency, max_frequency);
+ return cpufreq_generic_init(policy, bcm2835_freq_table, transition_latency);
+}
+
+/*
+ =====================================================================
+ Target index function chooses the requested frequency from the table
+ =====================================================================
+*/
+
+static int bcm2835_cpufreq_driver_target_index(struct cpufreq_policy *policy, unsigned int state)
+{
+ unsigned int target_freq = state == 0 ? min_frequency : max_frequency;
+ unsigned int cur = bcm2835_cpufreq_set_clock(policy->cur, target_freq);
+
+ if (!cur)
+ {
+ print_err("Error occurred setting a new frequency (%d)\n", target_freq);
+ return -EINVAL;
+ }
+ print_debug("%s: %i: freq %d->%d\n", policy->governor->name, state, policy->cur, cur);
+ return 0;
+}
+
+/*
+ ======================================================
+ Get function returns the current frequency from table
+ ======================================================
+*/
+
+static unsigned int bcm2835_cpufreq_driver_get(unsigned int cpu)
+{
+ unsigned int actual_rate = bcm2835_cpufreq_get_clock(RPI_FIRMWARE_GET_CLOCK_RATE);
+ print_debug("cpu%d: freq=%d\n", cpu, actual_rate);
+ return actual_rate <= min_frequency ? min_frequency : max_frequency;
+}
+
+/* the CPUFreq driver */
+static struct cpufreq_driver bcm2835_cpufreq_driver = {
+ .name = "BCM2835 CPUFreq",
+ .init = bcm2835_cpufreq_driver_init,
+ .verify = cpufreq_generic_frequency_table_verify,
+ .target_index = bcm2835_cpufreq_driver_target_index,
+ .get = bcm2835_cpufreq_driver_get,
+ .attr = cpufreq_generic_attr,
+};
+
+MODULE_AUTHOR("Dorian Peake and Dom Cobley");
+MODULE_DESCRIPTION("CPU frequency driver for BCM2835 chip");
+MODULE_LICENSE("GPL");
+
+module_init(bcm2835_cpufreq_module_init);
+module_exit(bcm2835_cpufreq_module_exit);

161
target/linux/brcm2708/patches-4.9/0047-Added-hwmon-thermal-driver-for-reporting-core-temper.patch Normal file
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@ -0,0 +1,161 @@
From c83d1bbc2d9feaf23252482682824babbbd7bbd9 Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Tue, 26 Mar 2013 19:24:24 +0000
Subject: [PATCH] Added hwmon/thermal driver for reporting core temperature.
Thanks Dorian
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
BCM270x: Move thermal sensor to Device Tree
Add Device Tree support to bcm2835-thermal driver.
Add thermal sensor device to Device Tree.
Don't add platform device when booting in DT mode.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
---
drivers/thermal/Kconfig | 7 +++
drivers/thermal/Makefile | 1 +
drivers/thermal/bcm2835-thermal.c | 109 ++++++++++++++++++++++++++++++++++++++
3 files changed, 117 insertions(+)
create mode 100644 drivers/thermal/bcm2835-thermal.c
--- a/drivers/thermal/Kconfig
+++ b/drivers/thermal/Kconfig
@@ -302,6 +302,13 @@ config INTEL_POWERCLAMP
enforce idle time which results in more package C-state residency. The
user interface is exposed via generic thermal framework.
+config THERMAL_BCM2835
+ depends on RASPBERRYPI_FIRMWARE
+ tristate "BCM2835 Thermal Driver"
+ help
+ This will enable temperature monitoring for the Broadcom BCM2835
+ chip. If built as a module, it will be called 'bcm2835-thermal'.
+
config X86_PKG_TEMP_THERMAL
tristate "X86 package temperature thermal driver"
depends on X86_THERMAL_VECTOR
--- a/drivers/thermal/Makefile
+++ b/drivers/thermal/Makefile
@@ -41,6 +41,7 @@ obj-$(CONFIG_MAX77620_THERMAL) += max776
obj-$(CONFIG_QORIQ_THERMAL) += qoriq_thermal.o
obj-$(CONFIG_DB8500_CPUFREQ_COOLING) += db8500_cpufreq_cooling.o
obj-$(CONFIG_INTEL_POWERCLAMP) += intel_powerclamp.o
+obj-$(CONFIG_THERMAL_BCM2835) += bcm2835-thermal.o
obj-$(CONFIG_X86_PKG_TEMP_THERMAL) += x86_pkg_temp_thermal.o
obj-$(CONFIG_INTEL_SOC_DTS_IOSF_CORE) += intel_soc_dts_iosf.o
obj-$(CONFIG_INTEL_SOC_DTS_THERMAL) += intel_soc_dts_thermal.o
--- /dev/null
+++ b/drivers/thermal/bcm2835-thermal.c
@@ -0,0 +1,109 @@
+/*****************************************************************************
+* Copyright 2011 Broadcom Corporation. All rights reserved.
+*
+* Unless you and Broadcom execute a separate written software license
+* agreement governing use of this software, this software is licensed to you
+* under the terms of the GNU General Public License version 2, available at
+* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+*
+* Notwithstanding the above, under no circumstances may you combine this
+* software in any way with any other Broadcom software provided under a
+* license other than the GPL, without Broadcom's express prior written
+* consent.
+*****************************************************************************/
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/thermal.h>
+#include <soc/bcm2835/raspberrypi-firmware.h>
+
+static int bcm2835_thermal_get_property(struct thermal_zone_device *tz,
+ int *temp, u32 tag)
+{
+ struct rpi_firmware *fw = tz->devdata;
+ struct {
+ u32 id;
+ u32 val;
+ } packet;
+ int ret;
+
+ *temp = 0;
+ packet.id = 0;
+ ret = rpi_firmware_property(fw, tag, &packet, sizeof(packet));
+ if (ret) {
+ dev_err(&tz->device, "Failed to get temperature\n");
+ return ret;
+ }
+
+ *temp = packet.val;
+ dev_dbg(&tz->device, "%stemp=%d\n",
+ tag == RPI_FIRMWARE_GET_MAX_TEMPERATURE ? "max" : "", *temp);
+
+ return 0;
+}
+
+static int bcm2835_thermal_get_temp(struct thermal_zone_device *tz,
+ int *temp)
+{
+ return bcm2835_thermal_get_property(tz, temp,
+ RPI_FIRMWARE_GET_TEMPERATURE);
+}
+
+static struct thermal_zone_device_ops ops = {
+ .get_temp = bcm2835_thermal_get_temp,
+};
+
+static int bcm2835_thermal_probe(struct platform_device *pdev)
+{
+ struct device_node *fw_np;
+ struct rpi_firmware *fw;
+ struct thermal_zone_device *tz;
+
+ fw_np = of_parse_phandle(pdev->dev.of_node, "firmware", 0);
+ if (!fw_np) {
+ dev_err(&pdev->dev, "Missing firmware node\n");
+ return -ENOENT;
+ }
+ fw = rpi_firmware_get(fw_np);
+ if (!fw)
+ return -EPROBE_DEFER;
+
+ tz = thermal_zone_device_register("bcm2835_thermal", 0, 0, fw, &ops,
+ NULL, 0, 0);
+ if (IS_ERR(tz)) {
+ dev_err(&pdev->dev, "Failed to register the thermal device\n");
+ return PTR_ERR(tz);
+ }
+
+ platform_set_drvdata(pdev, tz);
+
+ return 0;
+}
+
+static int bcm2835_thermal_remove(struct platform_device *pdev)
+{
+ thermal_zone_device_unregister(platform_get_drvdata(pdev));
+
+ return 0;
+}
+
+static const struct of_device_id bcm2835_thermal_of_match_table[] = {
+ { .compatible = "brcm,bcm2835-thermal", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, bcm2835_thermal_of_match_table);
+
+static struct platform_driver bcm2835_thermal_driver = {
+ .probe = bcm2835_thermal_probe,
+ .remove = bcm2835_thermal_remove,
+ .driver = {
+ .name = "bcm2835_thermal",
+ .of_match_table = bcm2835_thermal_of_match_table,
+ },
+};
+module_platform_driver(bcm2835_thermal_driver);
+
+MODULE_AUTHOR("Dorian Peake");
+MODULE_AUTHOR("Noralf Trønnes");
+MODULE_DESCRIPTION("Thermal driver for bcm2835 chip");
+MODULE_LICENSE("GPL");

660
target/linux/brcm2708/patches-4.9/0048-Add-Chris-Boot-s-i2c-driver.patch Normal file
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@ -0,0 +1,660 @@
From d34838cfa7c139fa069b7e038d3ea2b56c50a353 Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Wed, 17 Jun 2015 15:44:08 +0100
Subject: [PATCH] Add Chris Boot's i2c driver
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
i2c-bcm2708: fixed baudrate
Fixed issue where the wrong CDIV value was set for baudrates below 3815 Hz (for 250MHz bus clock).
In that case the computed CDIV value was more than 0xffff. However the CDIV register width is only 16 bits.
This resulted in incorrect setting of CDIV and higher baudrate than intended.
Example: 3500Hz -> CDIV=0x11704 -> CDIV(16bit)=0x1704 -> 42430Hz
After correction: 3500Hz -> CDIV=0x11704 -> CDIV(16bit)=0xffff -> 3815Hz
The correct baudrate is shown in the log after the cdiv > 0xffff correction.
Perform I2C combined transactions when possible
Perform I2C combined transactions whenever possible, within the
restrictions of the Broadcomm Serial Controller.
Disable DONE interrupt during TA poll
Prevent interrupt from being triggered if poll is missed and transfer
starts and finishes.
i2c: Make combined transactions optional and disabled by default
i2c: bcm2708: add device tree support
Add DT support to driver and add to .dtsi file.
Setup pins in .dts file.
i2c is disabled by default.
Signed-off-by: Noralf Tronnes <notro@tronnes.org>
bcm2708: don't register i2c controllers when using DT
The devices for the i2c controllers are in the Device Tree.
Only register devices when not using DT.
Signed-off-by: Noralf Tronnes <notro@tronnes.org>
I2C: Only register the I2C device for the current board revision
i2c_bcm2708: Fix clock reference counting
Fix grabbing lock from atomic context in i2c driver
2 main changes:
- check for timeouts in the bcm2708_bsc_setup function as indicated by this comment:
/* poll for transfer start bit (should only take 1-20 polls) */
This implies that the setup function can now fail so account for this everywhere it's called
- Removed the clk_get_rate call from inside the setup function as it locks a mutex and that's not ok since we call it from under a spin lock.
i2c-bcm2708: When using DT, leave the GPIO setup to pinctrl
i2c-bcm2708: Increase timeouts to allow larger transfers
Use the timeout value provided by the I2C_TIMEOUT ioctl when waiting
for completion. The default timeout is 1 second.
See: https://github.com/raspberrypi/linux/issues/260
i2c-bcm2708/BCM270X_DT: Add support for I2C2
The third I2C bus (I2C2) is normally reserved for HDMI use. Careless
use of this bus can break an attached display - use with caution.
It is recommended to disable accesses by VideoCore by setting
hdmi_ignore_edid=1 or hdmi_edid_file=1 in config.txt.
The interface is disabled by default - enable using the
i2c2_iknowwhatimdoing DT parameter.
bcm2708-spi: Don't use static pin configuration with DT
Also remove superfluous error checking - the SPI framework ensures the
validity of the chip_select value.
i2c-bcm2708: Remove non-DT support
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Set the BSC_CLKT clock streching timeout to 35ms as per SMBus specs.
Fixes i2c_bcm2708: Write to FIFO correctly - v2 (#1574)
* i2c: fix i2c_bcm2708: Clear FIFO before sending data
Make sure FIFO gets cleared before trying to send
data in case of a repeated start (COMBINED=Y).
* i2c: fix i2c_bcm2708: Only write to FIFO when not full
Check if FIFO can accept data before writing.
To avoid a peripheral read on the last iteration of a loop,
both bcm2708_bsc_fifo_fill and ~drain are changed as well.
---
drivers/i2c/busses/Kconfig | 19 ++
drivers/i2c/busses/Makefile | 2 +
drivers/i2c/busses/i2c-bcm2708.c | 512 +++++++++++++++++++++++++++++++++++++++
3 files changed, 533 insertions(+)
create mode 100644 drivers/i2c/busses/i2c-bcm2708.c
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -8,6 +8,25 @@ menu "I2C Hardware Bus support"
comment "PC SMBus host controller drivers"
depends on PCI
+config I2C_BCM2708
+ tristate "BCM2708 BSC"
+ depends on ARCH_BCM2835
+ help
+ Enabling this option will add BSC (Broadcom Serial Controller)
+ support for the BCM2708. BSC is a Broadcom proprietary bus compatible
+ with I2C/TWI/SMBus.
+
+config I2C_BCM2708_BAUDRATE
+ prompt "BCM2708 I2C baudrate"
+ depends on I2C_BCM2708
+ int
+ default 100000
+ help
+ Set the I2C baudrate. This will alter the default value. A
+ different baudrate can be set by using a module parameter as well. If
+ no parameter is provided when loading, this is the value that will be
+ used.
+
config I2C_ALI1535
tristate "ALI 1535"
depends on PCI
--- a/drivers/i2c/busses/Makefile
+++ b/drivers/i2c/busses/Makefile
@@ -2,6 +2,8 @@
# Makefile for the i2c bus drivers.
#
+obj-$(CONFIG_I2C_BCM2708) += i2c-bcm2708.o
+
# ACPI drivers
obj-$(CONFIG_I2C_SCMI) += i2c-scmi.o
--- /dev/null
+++ b/drivers/i2c/busses/i2c-bcm2708.c
@@ -0,0 +1,512 @@
+/*
+ * Driver for Broadcom BCM2708 BSC Controllers
+ *
+ * Copyright (C) 2012 Chris Boot & Frank Buss
+ *
+ * This driver is inspired by:
+ * i2c-ocores.c, by Peter Korsgaard <jacmet@sunsite.dk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/sched.h>
+#include <linux/wait.h>
+
+/* BSC register offsets */
+#define BSC_C 0x00
+#define BSC_S 0x04
+#define BSC_DLEN 0x08
+#define BSC_A 0x0c
+#define BSC_FIFO 0x10
+#define BSC_DIV 0x14
+#define BSC_DEL 0x18
+#define BSC_CLKT 0x1c
+
+/* Bitfields in BSC_C */
+#define BSC_C_I2CEN 0x00008000
+#define BSC_C_INTR 0x00000400
+#define BSC_C_INTT 0x00000200
+#define BSC_C_INTD 0x00000100
+#define BSC_C_ST 0x00000080
+#define BSC_C_CLEAR_1 0x00000020
+#define BSC_C_CLEAR_2 0x00000010
+#define BSC_C_READ 0x00000001
+
+/* Bitfields in BSC_S */
+#define BSC_S_CLKT 0x00000200
+#define BSC_S_ERR 0x00000100
+#define BSC_S_RXF 0x00000080
+#define BSC_S_TXE 0x00000040
+#define BSC_S_RXD 0x00000020
+#define BSC_S_TXD 0x00000010
+#define BSC_S_RXR 0x00000008
+#define BSC_S_TXW 0x00000004
+#define BSC_S_DONE 0x00000002
+#define BSC_S_TA 0x00000001
+
+#define I2C_WAIT_LOOP_COUNT 200
+
+#define DRV_NAME "bcm2708_i2c"
+
+static unsigned int baudrate;
+module_param(baudrate, uint, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
+MODULE_PARM_DESC(baudrate, "The I2C baudrate");
+
+static bool combined = false;
+module_param(combined, bool, 0644);
+MODULE_PARM_DESC(combined, "Use combined transactions");
+
+struct bcm2708_i2c {
+ struct i2c_adapter adapter;
+
+ spinlock_t lock;
+ void __iomem *base;
+ int irq;
+ struct clk *clk;
+ u32 cdiv;
+ u32 clk_tout;
+
+ struct completion done;
+
+ struct i2c_msg *msg;
+ int pos;
+ int nmsgs;
+ bool error;
+};
+
+static inline u32 bcm2708_rd(struct bcm2708_i2c *bi, unsigned reg)
+{
+ return readl(bi->base + reg);
+}
+
+static inline void bcm2708_wr(struct bcm2708_i2c *bi, unsigned reg, u32 val)
+{
+ writel(val, bi->base + reg);
+}
+
+static inline void bcm2708_bsc_reset(struct bcm2708_i2c *bi)
+{
+ bcm2708_wr(bi, BSC_C, 0);
+ bcm2708_wr(bi, BSC_S, BSC_S_CLKT | BSC_S_ERR | BSC_S_DONE);
+}
+
+static inline void bcm2708_bsc_fifo_drain(struct bcm2708_i2c *bi)
+{
+ while ((bi->pos < bi->msg->len) && (bcm2708_rd(bi, BSC_S) & BSC_S_RXD))
+ bi->msg->buf[bi->pos++] = bcm2708_rd(bi, BSC_FIFO);
+}
+
+static inline void bcm2708_bsc_fifo_fill(struct bcm2708_i2c *bi)
+{
+ while ((bi->pos < bi->msg->len) && (bcm2708_rd(bi, BSC_S) & BSC_S_TXD))
+ bcm2708_wr(bi, BSC_FIFO, bi->msg->buf[bi->pos++]);
+}
+
+static inline int bcm2708_bsc_setup(struct bcm2708_i2c *bi)
+{
+ u32 cdiv, s, clk_tout;
+ u32 c = BSC_C_I2CEN | BSC_C_INTD | BSC_C_ST | BSC_C_CLEAR_1;
+ int wait_loops = I2C_WAIT_LOOP_COUNT;
+
+ /* Can't call clk_get_rate as it locks a mutex and here we are spinlocked.
+ * Use the value that we cached in the probe.
+ */
+ cdiv = bi->cdiv;
+ clk_tout = bi->clk_tout;
+
+ if (bi->msg->flags & I2C_M_RD)
+ c |= BSC_C_INTR | BSC_C_READ;
+ else
+ c |= BSC_C_INTT;
+
+ bcm2708_wr(bi, BSC_CLKT, clk_tout);
+ bcm2708_wr(bi, BSC_DIV, cdiv);
+ bcm2708_wr(bi, BSC_A, bi->msg->addr);
+ bcm2708_wr(bi, BSC_DLEN, bi->msg->len);
+ if (combined)
+ {
+ /* Do the next two messages meet combined transaction criteria?
+ - Current message is a write, next message is a read
+ - Both messages to same slave address
+ - Write message can fit inside FIFO (16 bytes or less) */
+ if ( (bi->nmsgs > 1) &&
+ !(bi->msg[0].flags & I2C_M_RD) && (bi->msg[1].flags & I2C_M_RD) &&
+ (bi->msg[0].addr == bi->msg[1].addr) && (bi->msg[0].len <= 16)) {
+
+ /* Clear FIFO */
+ bcm2708_wr(bi, BSC_C, BSC_C_CLEAR_1);
+
+ /* Fill FIFO with entire write message (16 byte FIFO) */
+ while (bi->pos < bi->msg->len) {
+ bcm2708_wr(bi, BSC_FIFO, bi->msg->buf[bi->pos++]);
+ }
+ /* Start write transfer (no interrupts, don't clear FIFO) */
+ bcm2708_wr(bi, BSC_C, BSC_C_I2CEN | BSC_C_ST);
+
+ /* poll for transfer start bit (should only take 1-20 polls) */
+ do {
+ s = bcm2708_rd(bi, BSC_S);
+ } while (!(s & (BSC_S_TA | BSC_S_ERR | BSC_S_CLKT | BSC_S_DONE)) && --wait_loops >= 0);
+
+ /* did we time out or some error occured? */
+ if (wait_loops < 0 || (s & (BSC_S_ERR | BSC_S_CLKT))) {
+ return -1;
+ }
+
+ /* Send next read message before the write transfer finishes. */
+ bi->nmsgs--;
+ bi->msg++;
+ bi->pos = 0;
+ bcm2708_wr(bi, BSC_DLEN, bi->msg->len);
+ c = BSC_C_I2CEN | BSC_C_INTD | BSC_C_INTR | BSC_C_ST | BSC_C_READ;
+ }
+ }
+ bcm2708_wr(bi, BSC_C, c);
+
+ return 0;
+}
+
+static irqreturn_t bcm2708_i2c_interrupt(int irq, void *dev_id)
+{
+ struct bcm2708_i2c *bi = dev_id;
+ bool handled = true;
+ u32 s;
+ int ret;
+
+ spin_lock(&bi->lock);
+
+ /* we may see camera interrupts on the "other" I2C channel
+ Just return if we've not sent anything */
+ if (!bi->nmsgs || !bi->msg) {
+ goto early_exit;
+ }
+
+ s = bcm2708_rd(bi, BSC_S);
+
+ if (s & (BSC_S_CLKT | BSC_S_ERR)) {
+ bcm2708_bsc_reset(bi);
+ bi->error = true;
+
+ bi->msg = 0; /* to inform the that all work is done */
+ bi->nmsgs = 0;
+ /* wake up our bh */
+ complete(&bi->done);
+ } else if (s & BSC_S_DONE) {
+ bi->nmsgs--;
+
+ if (bi->msg->flags & I2C_M_RD) {
+ bcm2708_bsc_fifo_drain(bi);
+ }
+
+ bcm2708_bsc_reset(bi);
+
+ if (bi->nmsgs) {
+ /* advance to next message */
+ bi->msg++;
+ bi->pos = 0;
+ ret = bcm2708_bsc_setup(bi);
+ if (ret < 0) {
+ bcm2708_bsc_reset(bi);
+ bi->error = true;
+ bi->msg = 0; /* to inform the that all work is done */
+ bi->nmsgs = 0;
+ /* wake up our bh */
+ complete(&bi->done);
+ goto early_exit;
+ }
+ } else {
+ bi->msg = 0; /* to inform the that all work is done */
+ bi->nmsgs = 0;
+ /* wake up our bh */
+ complete(&bi->done);
+ }
+ } else if (s & BSC_S_TXW) {
+ bcm2708_bsc_fifo_fill(bi);
+ } else if (s & BSC_S_RXR) {
+ bcm2708_bsc_fifo_drain(bi);
+ } else {
+ handled = false;
+ }
+
+early_exit:
+ spin_unlock(&bi->lock);
+
+ return handled ? IRQ_HANDLED : IRQ_NONE;
+}
+
+static int bcm2708_i2c_master_xfer(struct i2c_adapter *adap,
+ struct i2c_msg *msgs, int num)
+{
+ struct bcm2708_i2c *bi = adap->algo_data;
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&bi->lock, flags);
+
+ reinit_completion(&bi->done);
+ bi->msg = msgs;
+ bi->pos = 0;
+ bi->nmsgs = num;
+ bi->error = false;
+
+ ret = bcm2708_bsc_setup(bi);
+
+ spin_unlock_irqrestore(&bi->lock, flags);
+
+ /* check the result of the setup */
+ if (ret < 0)
+ {
+ dev_err(&adap->dev, "transfer setup timed out\n");
+ goto error_timeout;
+ }
+
+ ret = wait_for_completion_timeout(&bi->done, adap->timeout);
+ if (ret == 0) {
+ dev_err(&adap->dev, "transfer timed out\n");
+ goto error_timeout;
+ }
+
+ ret = bi->error ? -EIO : num;
+ return ret;
+
+error_timeout:
+ spin_lock_irqsave(&bi->lock, flags);
+ bcm2708_bsc_reset(bi);
+ bi->msg = 0; /* to inform the interrupt handler that there's nothing else to be done */
+ bi->nmsgs = 0;
+ spin_unlock_irqrestore(&bi->lock, flags);
+ return -ETIMEDOUT;
+}
+
+static u32 bcm2708_i2c_functionality(struct i2c_adapter *adap)
+{
+ return I2C_FUNC_I2C | /*I2C_FUNC_10BIT_ADDR |*/ I2C_FUNC_SMBUS_EMUL;
+}
+
+static struct i2c_algorithm bcm2708_i2c_algorithm = {
+ .master_xfer = bcm2708_i2c_master_xfer,
+ .functionality = bcm2708_i2c_functionality,
+};
+
+static int bcm2708_i2c_probe(struct platform_device *pdev)
+{
+ struct resource *regs;
+ int irq, err = -ENOMEM;
+ struct clk *clk;
+ struct bcm2708_i2c *bi;
+ struct i2c_adapter *adap;
+ unsigned long bus_hz;
+ u32 cdiv, clk_tout;
+ u32 baud;
+
+ baud = CONFIG_I2C_BCM2708_BAUDRATE;
+
+ if (pdev->dev.of_node) {
+ u32 bus_clk_rate;
+ pdev->id = of_alias_get_id(pdev->dev.of_node, "i2c");
+ if (pdev->id < 0) {
+ dev_err(&pdev->dev, "alias is missing\n");
+ return -EINVAL;
+ }
+ if (!of_property_read_u32(pdev->dev.of_node,
+ "clock-frequency", &bus_clk_rate))
+ baud = bus_clk_rate;
+ else
+ dev_warn(&pdev->dev,
+ "Could not read clock-frequency property\n");
+ }
+
+ if (baudrate)
+ baud = baudrate;
+
+ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!regs) {
+ dev_err(&pdev->dev, "could not get IO memory\n");
+ return -ENXIO;
+ }
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ dev_err(&pdev->dev, "could not get IRQ\n");
+ return irq;
+ }
+
+ clk = clk_get(&pdev->dev, NULL);
+ if (IS_ERR(clk)) {
+ dev_err(&pdev->dev, "could not find clk: %ld\n", PTR_ERR(clk));
+ return PTR_ERR(clk);
+ }
+
+ err = clk_prepare_enable(clk);
+ if (err) {
+ dev_err(&pdev->dev, "could not enable clk: %d\n", err);
+ goto out_clk_put;
+ }
+
+ bi = kzalloc(sizeof(*bi), GFP_KERNEL);
+ if (!bi)
+ goto out_clk_disable;
+
+ platform_set_drvdata(pdev, bi);
+
+ adap = &bi->adapter;
+ adap->class = I2C_CLASS_HWMON | I2C_CLASS_DDC;
+ adap->algo = &bcm2708_i2c_algorithm;
+ adap->algo_data = bi;
+ adap->dev.parent = &pdev->dev;
+ adap->nr = pdev->id;
+ strlcpy(adap->name, dev_name(&pdev->dev), sizeof(adap->name));
+ adap->dev.of_node = pdev->dev.of_node;
+
+ switch (pdev->id) {
+ case 0:
+ adap->class = I2C_CLASS_HWMON;
+ break;
+ case 1:
+ adap->class = I2C_CLASS_DDC;
+ break;
+ case 2:
+ adap->class = I2C_CLASS_DDC;
+ break;
+ default:
+ dev_err(&pdev->dev, "can only bind to BSC 0, 1 or 2\n");
+ err = -ENXIO;
+ goto out_free_bi;
+ }
+
+ spin_lock_init(&bi->lock);
+ init_completion(&bi->done);
+
+ bi->base = ioremap(regs->start, resource_size(regs));
+ if (!bi->base) {
+ dev_err(&pdev->dev, "could not remap memory\n");
+ goto out_free_bi;
+ }
+
+ bi->irq = irq;
+ bi->clk = clk;
+
+ err = request_irq(irq, bcm2708_i2c_interrupt, IRQF_SHARED,
+ dev_name(&pdev->dev), bi);
+ if (err) {
+ dev_err(&pdev->dev, "could not request IRQ: %d\n", err);
+ goto out_iounmap;
+ }
+
+ bcm2708_bsc_reset(bi);
+
+ err = i2c_add_numbered_adapter(adap);
+ if (err < 0) {
+ dev_err(&pdev->dev, "could not add I2C adapter: %d\n", err);
+ goto out_free_irq;
+ }
+
+ bus_hz = clk_get_rate(bi->clk);
+ cdiv = bus_hz / baud;
+ if (cdiv > 0xffff) {
+ cdiv = 0xffff;
+ baud = bus_hz / cdiv;
+ }
+
+ clk_tout = 35/1000*baud; //35ms timeout as per SMBus specs.
+ if (clk_tout > 0xffff)
+ clk_tout = 0xffff;
+
+ bi->cdiv = cdiv;
+ bi->clk_tout = clk_tout;
+
+ dev_info(&pdev->dev, "BSC%d Controller at 0x%08lx (irq %d) (baudrate %d)\n",
+ pdev->id, (unsigned long)regs->start, irq, baud);
+
+ return 0;
+
+out_free_irq:
+ free_irq(bi->irq, bi);
+out_iounmap:
+ iounmap(bi->base);
+out_free_bi:
+ kfree(bi);
+out_clk_disable:
+ clk_disable_unprepare(clk);
+out_clk_put:
+ clk_put(clk);
+ return err;
+}
+
+static int bcm2708_i2c_remove(struct platform_device *pdev)
+{
+ struct bcm2708_i2c *bi = platform_get_drvdata(pdev);
+
+ platform_set_drvdata(pdev, NULL);
+
+ i2c_del_adapter(&bi->adapter);
+ free_irq(bi->irq, bi);
+ iounmap(bi->base);
+ clk_disable_unprepare(bi->clk);
+ clk_put(bi->clk);
+ kfree(bi);
+
+ return 0;
+}
+
+static const struct of_device_id bcm2708_i2c_of_match[] = {
+ { .compatible = "brcm,bcm2708-i2c" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, bcm2708_i2c_of_match);
+
+static struct platform_driver bcm2708_i2c_driver = {
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ .of_match_table = bcm2708_i2c_of_match,
+ },
+ .probe = bcm2708_i2c_probe,
+ .remove = bcm2708_i2c_remove,
+};
+
+// module_platform_driver(bcm2708_i2c_driver);
+
+
+static int __init bcm2708_i2c_init(void)
+{
+ return platform_driver_register(&bcm2708_i2c_driver);
+}
+
+static void __exit bcm2708_i2c_exit(void)
+{
+ platform_driver_unregister(&bcm2708_i2c_driver);
+}
+
+module_init(bcm2708_i2c_init);
+module_exit(bcm2708_i2c_exit);
+
+
+
+MODULE_DESCRIPTION("BSC controller driver for Broadcom BCM2708");
+MODULE_AUTHOR("Chris Boot <bootc@bootc.net>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DRV_NAME);

221
target/linux/brcm2708/patches-4.9/0049-char-broadcom-Add-vcio-module.patch Normal file
View File

@ -0,0 +1,221 @@
From e826eaf145a568f477ab9e5554a563233ad7fb49 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
Date: Fri, 26 Jun 2015 14:27:06 +0200
Subject: [PATCH] char: broadcom: Add vcio module
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Add module for accessing the mailbox property channel through
/dev/vcio. Was previously in bcm2708-vcio.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
---
drivers/char/broadcom/Kconfig | 6 ++
drivers/char/broadcom/Makefile | 1 +
drivers/char/broadcom/vcio.c | 175 +++++++++++++++++++++++++++++++++++++++++
3 files changed, 182 insertions(+)
create mode 100644 drivers/char/broadcom/vcio.c
--- a/drivers/char/broadcom/Kconfig
+++ b/drivers/char/broadcom/Kconfig
@@ -22,6 +22,12 @@ config BCM2708_VCMEM
help
Helper for videocore memory access and total size allocation.
+config BCM_VCIO
+ tristate "Mailbox userspace access"
+ depends on BCM2835_MBOX
+ help
+ Gives access to the mailbox property channel from userspace.
+
endif
config BCM_VC_SM
--- a/drivers/char/broadcom/Makefile
+++ b/drivers/char/broadcom/Makefile
@@ -1,5 +1,6 @@
obj-$(CONFIG_BCM_VC_CMA) += vc_cma/
obj-$(CONFIG_BCM2708_VCMEM) += vc_mem.o
+obj-$(CONFIG_BCM_VCIO) += vcio.o
obj-$(CONFIG_BCM_VC_SM) += vc_sm/
obj-$(CONFIG_BCM2835_DEVGPIOMEM)+= bcm2835-gpiomem.o
--- /dev/null
+++ b/drivers/char/broadcom/vcio.c
@@ -0,0 +1,175 @@
+/*
+ * Copyright (C) 2010 Broadcom
+ * Copyright (C) 2015 Noralf Trønnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/cdev.h>
+#include <linux/device.h>
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/ioctl.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/uaccess.h>
+#include <soc/bcm2835/raspberrypi-firmware.h>
+
+#define MBOX_CHAN_PROPERTY 8
+
+#define VCIO_IOC_MAGIC 100
+#define IOCTL_MBOX_PROPERTY _IOWR(VCIO_IOC_MAGIC, 0, char *)
+
+static struct {
+ dev_t devt;
+ struct cdev cdev;
+ struct class *class;
+ struct rpi_firmware *fw;
+} vcio;
+
+static int vcio_user_property_list(void *user)
+{
+ u32 *buf, size;
+ int ret;
+
+ /* The first 32-bit is the size of the buffer */
+ if (copy_from_user(&size, user, sizeof(size)))
+ return -EFAULT;
+
+ buf = kmalloc(size, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ if (copy_from_user(buf, user, size)) {
+ kfree(buf);
+ return -EFAULT;
+ }
+
+ /* Strip off protocol encapsulation */
+ ret = rpi_firmware_property_list(vcio.fw, &buf[2], size - 12);
+ if (ret) {
+ kfree(buf);
+ return ret;
+ }
+
+ buf[1] = RPI_FIRMWARE_STATUS_SUCCESS;
+ if (copy_to_user(user, buf, size))
+ ret = -EFAULT;
+
+ kfree(buf);
+
+ return ret;
+}
+
+static int vcio_device_open(struct inode *inode, struct file *file)
+{
+ try_module_get(THIS_MODULE);
+
+ return 0;
+}
+
+static int vcio_device_release(struct inode *inode, struct file *file)
+{
+ module_put(THIS_MODULE);
+
+ return 0;
+}
+
+static long vcio_device_ioctl(struct file *file, unsigned int ioctl_num,
+ unsigned long ioctl_param)
+{
+ switch (ioctl_num) {
+ case IOCTL_MBOX_PROPERTY:
+ return vcio_user_property_list((void *)ioctl_param);
+ default:
+ pr_err("unknown ioctl: %d\n", ioctl_num);
+ return -EINVAL;
+ }
+}
+
+const struct file_operations vcio_fops = {
+ .unlocked_ioctl = vcio_device_ioctl,
+ .open = vcio_device_open,
+ .release = vcio_device_release,
+};
+
+static int __init vcio_init(void)
+{
+ struct device_node *np;
+ static struct device *dev;
+ int ret;
+
+ np = of_find_compatible_node(NULL, NULL,
+ "raspberrypi,bcm2835-firmware");
+/* Uncomment this when we only boot with Device Tree
+ if (!of_device_is_available(np))
+ return -ENODEV;
+*/
+ vcio.fw = rpi_firmware_get(np);
+ if (!vcio.fw)
+ return -ENODEV;
+
+ ret = alloc_chrdev_region(&vcio.devt, 0, 1, "vcio");
+ if (ret) {
+ pr_err("failed to allocate device number\n");
+ return ret;
+ }
+
+ cdev_init(&vcio.cdev, &vcio_fops);
+ vcio.cdev.owner = THIS_MODULE;
+ ret = cdev_add(&vcio.cdev, vcio.devt, 1);
+ if (ret) {
+ pr_err("failed to register device\n");
+ goto err_unregister_chardev;
+ }
+
+ /*
+ * Create sysfs entries
+ * 'bcm2708_vcio' is used for backwards compatibility so we don't break
+ * userspace. Raspian has a udev rule that changes the permissions.
+ */
+ vcio.class = class_create(THIS_MODULE, "bcm2708_vcio");
+ if (IS_ERR(vcio.class)) {
+ ret = PTR_ERR(vcio.class);
+ pr_err("failed to create class\n");
+ goto err_cdev_del;
+ }
+
+ dev = device_create(vcio.class, NULL, vcio.devt, NULL, "vcio");
+ if (IS_ERR(dev)) {
+ ret = PTR_ERR(dev);
+ pr_err("failed to create device\n");
+ goto err_class_destroy;
+ }
+
+ return 0;
+
+err_class_destroy:
+ class_destroy(vcio.class);
+err_cdev_del:
+ cdev_del(&vcio.cdev);
+err_unregister_chardev:
+ unregister_chrdev_region(vcio.devt, 1);
+
+ return ret;
+}
+module_init(vcio_init);
+
+static void __exit vcio_exit(void)
+{
+ device_destroy(vcio.class, vcio.devt);
+ class_destroy(vcio.class);
+ cdev_del(&vcio.cdev);
+ unregister_chrdev_region(vcio.devt, 1);
+}
+module_exit(vcio_exit);
+
+MODULE_AUTHOR("Gray Girling");
+MODULE_AUTHOR("Noralf Trønnes");
+MODULE_DESCRIPTION("Mailbox userspace access");
+MODULE_LICENSE("GPL");

83
target/linux/brcm2708/patches-4.9/0050-firmware-bcm2835-Support-ARCH_BCM270x.patch Normal file
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@ -0,0 +1,83 @@
From 2838aca7eb2ef14cb94ac43921fc2db291af96a7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
Date: Fri, 26 Jun 2015 14:25:01 +0200
Subject: [PATCH] firmware: bcm2835: Support ARCH_BCM270x
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Support booting without Device Tree.
Turn on USB power.
Load driver early because of lacking support for deferred probing
in many drivers.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
firmware: bcm2835: Don't turn on USB power
The raspberrypi-power driver is now used to turn on USB power.
This partly reverts commit:
firmware: bcm2835: Support ARCH_BCM270x
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
---
drivers/firmware/raspberrypi.c | 19 +++++++++++++++++--
1 file changed, 17 insertions(+), 2 deletions(-)
--- a/drivers/firmware/raspberrypi.c
+++ b/drivers/firmware/raspberrypi.c
@@ -28,6 +28,8 @@ struct rpi_firmware {
u32 enabled;
};
+static struct platform_device *g_pdev;
+
static DEFINE_MUTEX(transaction_lock);
static void response_callback(struct mbox_client *cl, void *msg)
@@ -207,6 +209,7 @@ static int rpi_firmware_probe(struct pla
init_completion(&fw->c);
platform_set_drvdata(pdev, fw);
+ g_pdev = pdev;
rpi_firmware_print_firmware_revision(fw);
@@ -218,6 +221,7 @@ static int rpi_firmware_remove(struct pl
struct rpi_firmware *fw = platform_get_drvdata(pdev);
mbox_free_channel(fw->chan);
+ g_pdev = NULL;
return 0;
}
@@ -230,7 +234,7 @@ static int rpi_firmware_remove(struct pl
*/
struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node)
{
- struct platform_device *pdev = of_find_device_by_node(firmware_node);
+ struct platform_device *pdev = g_pdev;
if (!pdev)
return NULL;
@@ -253,7 +257,18 @@ static struct platform_driver rpi_firmwa
.probe = rpi_firmware_probe,
.remove = rpi_firmware_remove,
};
-module_platform_driver(rpi_firmware_driver);
+
+static int __init rpi_firmware_init(void)
+{
+ return platform_driver_register(&rpi_firmware_driver);
+}
+subsys_initcall(rpi_firmware_init);
+
+static void __init rpi_firmware_exit(void)
+{
+ platform_driver_unregister(&rpi_firmware_driver);
+}
+module_exit(rpi_firmware_exit);
MODULE_AUTHOR("Eric Anholt <eric@anholt.net>");
MODULE_DESCRIPTION("Raspberry Pi firmware driver");

7695
target/linux/brcm2708/patches-4.9/0051-bcm2835-add-v4l2-camera-device.patch Normal file
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File diff suppressed because it is too large Load Diff

515
target/linux/brcm2708/patches-4.9/0052-scripts-Add-mkknlimg-and-knlinfo-scripts-from-tools-.patch Normal file
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@ -0,0 +1,515 @@
From 59799351c2a2951565e10b2ef69ccff34f94fd30 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Mon, 11 May 2015 09:00:42 +0100
Subject: [PATCH] scripts: Add mkknlimg and knlinfo scripts from tools repo
The Raspberry Pi firmware looks for a trailer on the kernel image to
determine whether it was compiled with Device Tree support enabled.
If the firmware finds a kernel without this trailer, or which has a
trailer indicating that it isn't DT-capable, it disables DT support
and reverts to using ATAGs.
The mkknlimg utility adds that trailer, having first analysed the
image to look for signs of DT support and the kernel version string.
knlinfo displays the contents of the trailer in the given kernel image.
scripts/mkknlimg: Add support for ARCH_BCM2835
Add a new trailer field indicating whether this is an ARCH_BCM2835
build, as opposed to MACH_BCM2708/9. If the loader finds this flag
is set it changes the default base dtb file name from bcm270x...
to bcm283y...
Also update knlinfo to show the status of the field.
scripts/mkknlimg: Improve ARCH_BCM2835 detection
The board support code contains sufficient strings to be able to
distinguish 2708 vs. 2835 builds, so remove the check for
bcm2835-pm-wdt which could exist in either.
Also, since the canned configuration is no longer built in (it's
a module), remove the config string checking.
See: https://github.com/raspberrypi/linux/issues/1157
scripts: Multi-platform support for mkknlimg and knlinfo
The firmware uses tags in the kernel trailer to choose which dtb file
to load. Current firmware loads bcm2835-*.dtb if the '283x' tag is true,
otherwise it loads bcm270*.dtb. This scheme breaks if an image supports
multiple platforms.
This patch adds '270X' and '283X' tags to indicate support for RPi and
upstream platforms, respectively. '283x' (note lower case 'x') is left
for old firmware, and is only set if the image only supports upstream
builds.
scripts/mkknlimg: Append a trailer for all input
Now that the firmware assumes an unsigned kernel is DT-capable, it is
helpful to be able to mark a kernel as being non-DT-capable.
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
scripts/knlinfo: Decode DDTK atom
Show the DDTK atom as being a boolean.
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
mkknlimg: Retain downstream-kernel detection
With the death of ARCH_BCM2708 and ARCH_BCM2709, a new way is needed to
determine if this is a "downstream" build that wants the firmware to
load a bcm27xx .dtb. The vc_cma driver is used downstream but not
upstream, making vc_cma_init a suitable predicate symbol.
---
scripts/knlinfo | 171 +++++++++++++++++++++++++++++++++++
scripts/mkknlimg | 264 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 435 insertions(+)
create mode 100755 scripts/knlinfo
create mode 100755 scripts/mkknlimg
--- /dev/null
+++ b/scripts/knlinfo
@@ -0,0 +1,171 @@
+#!/usr/bin/env perl
+# ----------------------------------------------------------------------
+# knlinfo by Phil Elwell for Raspberry Pi
+#
+# (c) 2014,2015 Raspberry Pi (Trading) Limited <info@raspberrypi.org>
+#
+# Licensed under the terms of the GNU General Public License.
+# ----------------------------------------------------------------------
+
+use strict;
+use integer;
+
+use Fcntl ":seek";
+
+my $trailer_magic = 'RPTL';
+
+my %atom_formats =
+(
+ 'DDTK' => \&format_bool,
+ 'DTOK' => \&format_bool,
+ 'KVer' => \&format_string,
+ '270X' => \&format_bool,
+ '283X' => \&format_bool,
+ '283x' => \&format_bool,
+);
+
+if (@ARGV != 1)
+{
+ print ("Usage: knlinfo <kernel image>\n");
+ exit(1);
+}
+
+my $kernel_file = $ARGV[0];
+
+
+my ($atoms, $pos) = read_trailer($kernel_file);
+
+exit(1) if (!$atoms);
+
+printf("Kernel trailer found at %d/0x%x:\n", $pos, $pos);
+
+foreach my $atom (@$atoms)
+{
+ printf(" %s: %s\n", $atom->[0], format_atom($atom));
+}
+
+exit(0);
+
+sub read_trailer
+{
+ my ($kernel_file) = @_;
+ my $fh;
+
+ if (!open($fh, '<', $kernel_file))
+ {
+ print ("* Failed to open '$kernel_file'\n");
+ return undef;
+ }
+
+ if (!seek($fh, -12, SEEK_END))
+ {
+ print ("* seek error in '$kernel_file'\n");
+ return undef;
+ }
+
+ my $last_bytes;
+ sysread($fh, $last_bytes, 12);
+
+ my ($trailer_len, $data_len, $magic) = unpack('VVa4', $last_bytes);
+
+ if (($magic ne $trailer_magic) || ($data_len != 4))
+ {
+ print ("* no trailer\n");
+ return undef;
+ }
+ if (!seek($fh, -12, SEEK_END))
+ {
+ print ("* seek error in '$kernel_file'\n");
+ return undef;
+ }
+
+ $trailer_len -= 12;
+
+ while ($trailer_len > 0)
+ {
+ if ($trailer_len < 8)
+ {
+ print ("* truncated atom header in trailer\n");
+ return undef;
+ }
+ if (!seek($fh, -8, SEEK_CUR))
+ {
+ print ("* seek error in '$kernel_file'\n");
+ return undef;
+ }
+ $trailer_len -= 8;
+
+ my $atom_hdr;
+ sysread($fh, $atom_hdr, 8);
+ my ($atom_len, $atom_type) = unpack('Va4', $atom_hdr);
+
+ if ($trailer_len < $atom_len)
+ {
+ print ("* truncated atom data in trailer\n");
+ return undef;
+ }
+
+ my $rounded_len = (($atom_len + 3) & ~3);
+ if (!seek($fh, -(8 + $rounded_len), SEEK_CUR))
+ {
+ print ("* seek error in '$kernel_file'\n");
+ return undef;
+ }
+ $trailer_len -= $rounded_len;
+
+ my $atom_data;
+ sysread($fh, $atom_data, $atom_len);
+
+ if (!seek($fh, -$atom_len, SEEK_CUR))
+ {
+ print ("* seek error in '$kernel_file'\n");
+ return undef;
+ }
+
+ push @$atoms, [ $atom_type, $atom_data ];
+ }
+
+ if (($$atoms[-1][0] eq "\x00\x00\x00\x00") &&
+ ($$atoms[-1][1] eq ""))
+ {
+ pop @$atoms;
+ }
+ else
+ {
+ print ("* end marker missing from trailer\n");
+ }
+
+ return ($atoms, tell($fh));
+}
+
+sub format_atom
+{
+ my ($atom) = @_;
+
+ my $format_func = $atom_formats{$atom->[0]} || \&format_hex;
+ return $format_func->($atom->[1]);
+}
+
+sub format_bool
+{
+ my ($data) = @_;
+ return unpack('V', $data) ? 'y' : 'n';
+}
+
+sub format_int
+{
+ my ($data) = @_;
+ return unpack('V', $data);
+}
+
+sub format_string
+{
+ my ($data) = @_;
+ return '"'.$data.'"';
+}
+
+sub format_hex
+{
+ my ($data) = @_;
+ return unpack('H*', $data);
+}
--- /dev/null
+++ b/scripts/mkknlimg
@@ -0,0 +1,264 @@
+#!/usr/bin/env perl
+# ----------------------------------------------------------------------
+# mkknlimg by Phil Elwell for Raspberry Pi
+# based on extract-ikconfig by Dick Streefland
+#
+# (c) 2009,2010 Dick Streefland <dick@streefland.net>
+# (c) 2014,2015 Raspberry Pi (Trading) Limited <info@raspberrypi.org>
+#
+# Licensed under the terms of the GNU General Public License.
+# ----------------------------------------------------------------------
+
+use strict;
+use warnings;
+use integer;
+
+use constant FLAG_PI => 0x01;
+use constant FLAG_DTOK => 0x02;
+use constant FLAG_DDTK => 0x04;
+use constant FLAG_270X => 0x08;
+use constant FLAG_283X => 0x10;
+
+my $trailer_magic = 'RPTL';
+
+my $tmpfile1 = "/tmp/mkknlimg_$$.1";
+my $tmpfile2 = "/tmp/mkknlimg_$$.2";
+
+my $dtok = 0;
+my $ddtk = 0;
+my $is_270x = 0;
+my $is_283x = 0;
+
+while (@ARGV && ($ARGV[0] =~ /^-/))
+{
+ my $arg = shift(@ARGV);
+ if ($arg eq '--dtok')
+ {
+ $dtok = 1;
+ }
+ elsif ($arg eq '--ddtk')
+ {
+ $ddtk = 1;
+ }
+ elsif ($arg eq '--270x')
+ {
+ $is_270x = 1;
+ }
+ elsif ($arg eq '--283x')
+ {
+ $is_283x = 1;
+ }
+ else
+ {
+ print ("* Unknown option '$arg'\n");
+ usage();
+ }
+}
+
+usage() if (@ARGV != 2);
+
+my $kernel_file = $ARGV[0];
+my $out_file = $ARGV[1];
+
+if (! -r $kernel_file)
+{
+ print ("* File '$kernel_file' not found\n");
+ usage();
+}
+
+my $wanted_strings =
+{
+ 'bcm2708_fb' => FLAG_PI,
+ 'brcm,bcm2835-mmc' => FLAG_PI,
+ 'brcm,bcm2835-sdhost' => FLAG_PI,
+ 'brcm,bcm2708-pinctrl' => FLAG_PI | FLAG_DTOK,
+ 'brcm,bcm2835-gpio' => FLAG_PI | FLAG_DTOK,
+ 'brcm,bcm2708' => FLAG_PI | FLAG_DTOK | FLAG_270X,
+ 'brcm,bcm2709' => FLAG_PI | FLAG_DTOK | FLAG_270X,
+ 'brcm,bcm2835' => FLAG_PI | FLAG_DTOK | FLAG_283X,
+ 'brcm,bcm2836' => FLAG_PI | FLAG_DTOK | FLAG_283X,
+ 'of_cfs_init' => FLAG_DTOK | FLAG_DDTK,
+ 'vc_cma_init' => FLAG_PI | FLAG_270X,
+};
+
+my $res = try_extract($kernel_file, $tmpfile1);
+$res ||= try_decompress('\037\213\010', 'xy', 'gunzip', 0,
+ $kernel_file, $tmpfile1, $tmpfile2);
+$res ||= try_decompress('\3757zXZ\000', 'abcde', 'unxz --single-stream', -1,
+ $kernel_file, $tmpfile1, $tmpfile2);
+$res ||= try_decompress('BZh', 'xy', 'bunzip2', 0,
+ $kernel_file, $tmpfile1, $tmpfile2);
+$res ||= try_decompress('\135\0\0\0', 'xxx', 'unlzma', 0,
+ $kernel_file, $tmpfile1, $tmpfile2);
+$res ||= try_decompress('\211\114\132', 'xy', 'lzop -d', 0,
+ $kernel_file, $tmpfile1, $tmpfile2);
+$res ||= try_decompress('\002\041\114\030', 'xy', 'lz4 -d', 1,
+ $kernel_file, $tmpfile1, $tmpfile2);
+
+my $append_trailer;
+my $trailer;
+my $kver = '?';
+
+$append_trailer = 1;
+
+if ($res)
+{
+ $kver = $res->{'kver'} || '?';
+ my $flags = $res->{'flags'};
+ print("Version: $kver\n");
+
+ if ($flags & FLAG_PI)
+ {
+ $dtok ||= ($flags & FLAG_DTOK) != 0;
+ $is_270x ||= ($flags & FLAG_270X) != 0;
+ $is_283x ||= ($flags & FLAG_283X) != 0;
+ $ddtk ||= ($flags & FLAG_DDTK) != 0;
+ }
+ else
+ {
+ print ("* This doesn't look like a Raspberry Pi kernel.\n");
+ }
+}
+elsif (!$dtok)
+{
+ print ("* Is this a valid kernel?\n");
+}
+
+if ($append_trailer)
+{
+ printf("DT: %s\n", $dtok ? "y" : "n");
+ printf("DDT: %s\n", $ddtk ? "y" : "n");
+ printf("270x: %s\n", $is_270x ? "y" : "n");
+ printf("283x: %s\n", $is_283x ? "y" : "n");
+
+ my @atoms;
+
+ push @atoms, [ $trailer_magic, pack('V', 0) ];
+ push @atoms, [ 'KVer', $kver ];
+ push @atoms, [ 'DTOK', pack('V', $dtok) ];
+ push @atoms, [ 'DDTK', pack('V', $ddtk) ];
+ push @atoms, [ '270X', pack('V', $is_270x) ];
+ push @atoms, [ '283X', pack('V', $is_283x) ];
+ push @atoms, [ '283x', pack('V', $is_283x && !$is_270x) ];
+
+ $trailer = pack_trailer(\@atoms);
+ $atoms[0]->[1] = pack('V', length($trailer));
+
+ $trailer = pack_trailer(\@atoms);
+}
+
+my $ofh;
+my $total_len = 0;
+
+if ($out_file eq $kernel_file)
+{
+ die "* Failed to open '$out_file' for append\n"
+ if (!open($ofh, '>>', $out_file));
+ $total_len = tell($ofh);
+}
+else
+{
+ die "* Failed to open '$kernel_file'\n"
+ if (!open(my $ifh, '<', $kernel_file));
+ die "* Failed to create '$out_file'\n"
+ if (!open($ofh, '>', $out_file));
+
+ my $copybuf;
+ while (1)
+ {
+ my $bytes = sysread($ifh, $copybuf, 64*1024);
+ last if (!$bytes);
+ syswrite($ofh, $copybuf, $bytes);
+ $total_len += $bytes;
+ }
+ close($ifh);
+}
+
+if ($trailer)
+{
+ # Pad to word-alignment
+ syswrite($ofh, "\x000\x000\x000", (-$total_len & 0x3));
+ syswrite($ofh, $trailer);
+}
+
+close($ofh);
+
+exit($trailer ? 0 : 1);
+
+END {
+ unlink($tmpfile1) if ($tmpfile1);
+ unlink($tmpfile2) if ($tmpfile2);
+}
+
+
+sub usage
+{
+ print ("Usage: mkknlimg [--dtok] [--270x] [--283x] <vmlinux|zImage|bzImage> <outfile>\n");
+ exit(1);
+}
+
+sub try_extract
+{
+ my ($knl, $tmp) = @_;
+
+ my $ver = `strings "$knl" | grep -a -E "^Linux version [1-9]"`;
+
+ return undef if (!$ver);
+
+ chomp($ver);
+
+ my $res = { 'kver'=>$ver };
+ $res->{'flags'} = strings_to_flags($knl, $wanted_strings);
+
+ return $res;
+}
+
+
+sub try_decompress
+{
+ my ($magic, $subst, $zcat, $idx, $knl, $tmp1, $tmp2) = @_;
+
+ my $pos = `tr "$magic\n$subst" "\n$subst=" < "$knl" | grep -abo "^$subst"`;
+ if ($pos)
+ {
+ chomp($pos);
+ $pos = (split(/[\r\n]+/, $pos))[$idx];
+ return undef if (!defined($pos));
+ $pos =~ s/:.*[\r\n]*$//s;
+ my $cmd = "tail -c+$pos \"$knl\" | $zcat > $tmp2 2> /dev/null";
+ my $err = (system($cmd) >> 8);
+ return undef if (($err != 0) && ($err != 2));
+
+ return try_extract($tmp2, $tmp1);
+ }
+
+ return undef;
+}
+
+sub strings_to_flags
+{
+ my ($knl, $strings) = @_;
+ my $string_pattern = '^('.join('|', keys(%$strings)).')$';
+ my $flags = 0;
+
+ my @matches = `strings \"$knl\" | grep -E \"$string_pattern\"`;
+ foreach my $match (@matches)
+ {
+ chomp($match);
+ $flags |= $strings->{$match};
+ }
+
+ return $flags;
+}
+
+sub pack_trailer
+{
+ my ($atoms) = @_;
+ my $trailer = pack('VV', 0, 0);
+ for (my $i = $#$atoms; $i>=0; $i--)
+ {
+ my $atom = $atoms->[$i];
+ $trailer .= pack('a*x!4Va4', $atom->[1], length($atom->[1]), $atom->[0]);
+ }
+ return $trailer;
+}

2833
target/linux/brcm2708/patches-4.9/0053-scripts-dtc-Update-to-upstream-version-1.4.1.patch Normal file
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File diff suppressed because it is too large Load Diff

9790
target/linux/brcm2708/patches-4.9/0054-BCM2708-Add-core-Device-Tree-support.patch Normal file
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File diff suppressed because it is too large Load Diff

166
target/linux/brcm2708/patches-4.9/0055-BCM270x_DT-Add-pwr_led-and-the-required-input-trigge.patch Normal file
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@ -0,0 +1,166 @@
From f760337032ce3078b0ecfe2ec8420bbdf173151d Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Fri, 6 Feb 2015 13:50:57 +0000
Subject: [PATCH] BCM270x_DT: Add pwr_led, and the required "input" trigger
The "input" trigger makes the associated GPIO an input. This is to support
the Raspberry Pi PWR LED, which is driven by external hardware in normal use.
N.B. pwr_led is not available on Model A or B boards.
leds-gpio: Implement the brightness_get method
The power LED uses some clever logic that means it is driven
by a voltage measuring circuit when configured as input, otherwise
it is driven by the GPIO output value. This patch wires up the
brightness_get method for leds-gpio so that user-space can monitor
the LED value via /sys/class/gpio/led1/brightness. Using the input
trigger this returns an indication of the system power health,
otherwise it is just whatever value the trigger has written most
recently.
See: https://github.com/raspberrypi/linux/issues/1064
---
drivers/leds/leds-gpio.c | 18 +++++++++++-
drivers/leds/trigger/Kconfig | 7 +++++
drivers/leds/trigger/Makefile | 1 +
drivers/leds/trigger/ledtrig-input.c | 54 ++++++++++++++++++++++++++++++++++++
include/linux/leds.h | 3 ++
5 files changed, 82 insertions(+), 1 deletion(-)
create mode 100644 drivers/leds/trigger/ledtrig-input.c
--- a/drivers/leds/leds-gpio.c
+++ b/drivers/leds/leds-gpio.c
@@ -50,8 +50,15 @@ static void gpio_led_set(struct led_clas
led_dat->platform_gpio_blink_set(led_dat->gpiod, level,
NULL, NULL);
led_dat->blinking = 0;
+ } else if (led_dat->cdev.flags & SET_GPIO_INPUT) {
+ gpiod_direction_input(led_dat->gpiod);
+ led_dat->cdev.flags &= ~SET_GPIO_INPUT;
+ } else if (led_dat->cdev.flags & SET_GPIO_OUTPUT) {
+ gpiod_direction_output(led_dat->gpiod, level);
+ led_dat->cdev.flags &= ~SET_GPIO_OUTPUT;
} else {
- if (led_dat->can_sleep)
+ if (led_dat->can_sleep ||
+ (led_dat->cdev.flags & (SET_GPIO_INPUT | SET_GPIO_OUTPUT) ))
gpiod_set_value_cansleep(led_dat->gpiod, level);
else
gpiod_set_value(led_dat->gpiod, level);
@@ -65,6 +72,13 @@ static int gpio_led_set_blocking(struct
return 0;
}
+static enum led_brightness gpio_led_get(struct led_classdev *led_cdev)
+{
+ struct gpio_led_data *led_dat =
+ container_of(led_cdev, struct gpio_led_data, cdev);
+ return gpiod_get_value_cansleep(led_dat->gpiod) ? LED_FULL : LED_OFF;
+}
+
static int gpio_blink_set(struct led_classdev *led_cdev,
unsigned long *delay_on, unsigned long *delay_off)
{
@@ -122,6 +136,8 @@ static int create_gpio_led(const struct
led_dat->platform_gpio_blink_set = blink_set;
led_dat->cdev.blink_set = gpio_blink_set;
}
+ led_dat->cdev.brightness_set = gpio_led_set;
+ led_dat->cdev.brightness_get = gpio_led_get;
if (template->default_state == LEDS_GPIO_DEFSTATE_KEEP) {
state = gpiod_get_value_cansleep(led_dat->gpiod);
if (state < 0)
--- a/drivers/leds/trigger/Kconfig
+++ b/drivers/leds/trigger/Kconfig
@@ -116,6 +116,13 @@ config LEDS_TRIGGER_CAMERA
This enables direct flash/torch on/off by the driver, kernel space.
If unsure, say Y.
+config LEDS_TRIGGER_INPUT
+ tristate "LED Input Trigger"
+ depends on LEDS_TRIGGERS
+ help
+ This allows the GPIOs assigned to be LEDs to be initialised to inputs.
+ If unsure, say Y.
+
config LEDS_TRIGGER_PANIC
bool "LED Panic Trigger"
depends on LEDS_TRIGGERS
--- a/drivers/leds/trigger/Makefile
+++ b/drivers/leds/trigger/Makefile
@@ -9,4 +9,5 @@ obj-$(CONFIG_LEDS_TRIGGER_CPU) += ledtr
obj-$(CONFIG_LEDS_TRIGGER_DEFAULT_ON) += ledtrig-default-on.o
obj-$(CONFIG_LEDS_TRIGGER_TRANSIENT) += ledtrig-transient.o
obj-$(CONFIG_LEDS_TRIGGER_CAMERA) += ledtrig-camera.o
+obj-$(CONFIG_LEDS_TRIGGER_INPUT) += ledtrig-input.o
obj-$(CONFIG_LEDS_TRIGGER_PANIC) += ledtrig-panic.o
--- /dev/null
+++ b/drivers/leds/trigger/ledtrig-input.c
@@ -0,0 +1,54 @@
+/*
+ * Set LED GPIO to Input "Trigger"
+ *
+ * Copyright 2015 Phil Elwell <phil@raspberrypi.org>
+ *
+ * Based on Nick Forbes's ledtrig-default-on.c.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/leds.h>
+#include <linux/gpio.h>
+#include "../leds.h"
+
+static void input_trig_activate(struct led_classdev *led_cdev)
+{
+ led_cdev->flags |= SET_GPIO_INPUT;
+ led_set_brightness(led_cdev, 0);
+}
+
+static void input_trig_deactivate(struct led_classdev *led_cdev)
+{
+ led_cdev->flags |= SET_GPIO_OUTPUT;
+ led_set_brightness(led_cdev, 0);
+}
+
+static struct led_trigger input_led_trigger = {
+ .name = "input",
+ .activate = input_trig_activate,
+ .deactivate = input_trig_deactivate,
+};
+
+static int __init input_trig_init(void)
+{
+ return led_trigger_register(&input_led_trigger);
+}
+
+static void __exit input_trig_exit(void)
+{
+ led_trigger_unregister(&input_led_trigger);
+}
+
+module_init(input_trig_init);
+module_exit(input_trig_exit);
+
+MODULE_AUTHOR("Phil Elwell <phil@raspberrypi.org>");
+MODULE_DESCRIPTION("Set LED GPIO to Input \"trigger\"");
+MODULE_LICENSE("GPL");
--- a/include/linux/leds.h
+++ b/include/linux/leds.h
@@ -52,6 +52,9 @@ struct led_classdev {
#define LED_DEV_CAP_FLASH (1 << 24)
#define LED_HW_PLUGGABLE (1 << 25)
#define LED_PANIC_INDICATOR (1 << 26)
+ /* Additions for Raspberry Pi PWR LED */
+#define SET_GPIO_INPUT (1 << 30)
+#define SET_GPIO_OUTPUT (1 << 31)
/* Set LED brightness level
* Must not sleep. Use brightness_set_blocking for drivers

248
target/linux/brcm2708/patches-4.9/0056-fbdev-add-FBIOCOPYAREA-ioctl.patch Normal file
View File

@ -0,0 +1,248 @@
From c19ea76c6206a3e5a897cef2da65d82c6dd76430 Mon Sep 17 00:00:00 2001
From: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Date: Mon, 17 Jun 2013 13:32:11 +0300
Subject: [PATCH] fbdev: add FBIOCOPYAREA ioctl
Based on the patch authored by Ali Gholami Rudi at
https://lkml.org/lkml/2009/7/13/153
Provide an ioctl for userspace applications, but only if this operation
is hardware accelerated (otherwide it does not make any sense).
Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
bcm2708_fb: Add ioctl for reading gpu memory through dma
---
drivers/video/fbdev/bcm2708_fb.c | 109 +++++++++++++++++++++++++++++++++++++++
drivers/video/fbdev/core/fbmem.c | 36 +++++++++++++
include/uapi/linux/fb.h | 12 +++++
3 files changed, 157 insertions(+)
--- a/drivers/video/fbdev/bcm2708_fb.c
+++ b/drivers/video/fbdev/bcm2708_fb.c
@@ -31,8 +31,10 @@
#include <linux/console.h>
#include <linux/debugfs.h>
#include <asm/sizes.h>
+#include <asm/uaccess.h>
#include <linux/io.h>
#include <linux/dma-mapping.h>
+#include <linux/cred.h>
#include <soc/bcm2835/raspberrypi-firmware.h>
//#define BCM2708_FB_DEBUG
@@ -426,6 +428,110 @@ static int bcm2708_fb_pan_display(struct
return result;
}
+static void dma_memcpy(struct bcm2708_fb *fb, dma_addr_t dst, dma_addr_t src, int size)
+{
+ int burst_size = (fb->dma_chan == 0) ? 8 : 2;
+ struct bcm2708_dma_cb *cb = fb->cb_base;
+
+ cb->info = BCM2708_DMA_BURST(burst_size) | BCM2708_DMA_S_WIDTH |
+ BCM2708_DMA_S_INC | BCM2708_DMA_D_WIDTH |
+ BCM2708_DMA_D_INC;
+ cb->dst = dst;
+ cb->src = src;
+ cb->length = size;
+ cb->stride = 0;
+ cb->pad[0] = 0;
+ cb->pad[1] = 0;
+ cb->next = 0;
+
+ if (size < dma_busy_wait_threshold) {
+ bcm_dma_start(fb->dma_chan_base, fb->cb_handle);
+ bcm_dma_wait_idle(fb->dma_chan_base);
+ } else {
+ void __iomem *dma_chan = fb->dma_chan_base;
+ cb->info |= BCM2708_DMA_INT_EN;
+ bcm_dma_start(fb->dma_chan_base, fb->cb_handle);
+ while (bcm_dma_is_busy(dma_chan)) {
+ wait_event_interruptible(
+ fb->dma_waitq,
+ !bcm_dma_is_busy(dma_chan));
+ }
+ fb->stats.dma_irqs++;
+ }
+ fb->stats.dma_copies++;
+}
+
+#define INTALIAS_NORMAL(x) ((x)&~0xc0000000) // address with no aliases
+#define INTALIAS_L1L2_NONALLOCATING(x) (((x)&~0xc0000000)|0x80000000) // cache coherent but non-allocating in L1 and L2
+
+static long vc_mem_copy(struct bcm2708_fb *fb, unsigned long arg)
+{
+ struct fb_dmacopy ioparam;
+ size_t size = PAGE_SIZE;
+ u32 *buf = NULL;
+ dma_addr_t bus_addr;
+ long rc = 0;
+ size_t offset;
+ struct { u32 base, length; } gpu = {};
+
+ /* restrict this to root user */
+ if (!uid_eq(current_euid(), GLOBAL_ROOT_UID))
+ {
+ rc = -EFAULT;
+ goto out;
+ }
+
+ /* Get the parameter data.
+ */
+ if (copy_from_user
+ (&ioparam, (void *)arg, sizeof(ioparam)) != 0) {
+ pr_err("[%s]: failed to copy-from-user\n",
+ __func__);
+ rc = -EFAULT;
+ goto out;
+ }
+
+ rc = rpi_firmware_property(fb->fw,
+ RPI_FIRMWARE_GET_VC_MEMORY,
+ &gpu, sizeof(gpu));
+ if (rc != 0 || gpu.base == 0 || gpu.length == 0) {
+ pr_err("[%s]: Unable to determine gpu memory %ld,%x,%x)\n", __func__, rc, gpu.base, gpu.length);
+ return -EFAULT;
+ }
+
+ if (INTALIAS_NORMAL(ioparam.src) < gpu.base || INTALIAS_NORMAL(ioparam.src) >= gpu.base + gpu.length) {
+ pr_err("[%s]: Invalid memory access %x (%x-%x)", __func__, INTALIAS_NORMAL(ioparam.src), gpu.base, gpu.base + gpu.length);
+ return -EFAULT;
+ }
+
+ buf = dma_alloc_coherent(fb->fb.device, PAGE_ALIGN(size), &bus_addr,
+ GFP_ATOMIC);
+ if (!buf) {
+ pr_err("[%s]: failed to dma_alloc_coherent(%d)\n",
+ __func__, size);
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ for (offset = 0; offset < ioparam.length; offset += size) {
+ size_t remaining = ioparam.length - offset;
+ size_t s = min(size, remaining);
+ unsigned char *p = (unsigned char *)ioparam.src + offset;
+ unsigned char *q = (unsigned char *)ioparam.dst + offset;
+ dma_memcpy(fb, bus_addr, INTALIAS_L1L2_NONALLOCATING((dma_addr_t)p), size);
+ if (copy_to_user(q, buf, s) != 0) {
+ pr_err("[%s]: failed to copy-to-user\n",
+ __func__);
+ rc = -EFAULT;
+ goto out;
+ }
+ }
+out:
+ if (buf)
+ dma_free_coherent(fb->fb.device, PAGE_ALIGN(size), buf, bus_addr);
+ return rc;
+}
+
static int bcm2708_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
{
struct bcm2708_fb *fb = to_bcm2708(info);
@@ -438,6 +544,9 @@ static int bcm2708_ioctl(struct fb_info
RPI_FIRMWARE_FRAMEBUFFER_SET_VSYNC,
&dummy, sizeof(dummy));
break;
+ case FBIODMACOPY:
+ ret = vc_mem_copy(fb, arg);
+ break;
default:
dev_dbg(info->device, "Unknown ioctl 0x%x\n", cmd);
return -ENOTTY;
--- a/drivers/video/fbdev/core/fbmem.c
+++ b/drivers/video/fbdev/core/fbmem.c
@@ -1084,6 +1084,31 @@ fb_blank(struct fb_info *info, int blank
}
EXPORT_SYMBOL(fb_blank);
+static int fb_copyarea_user(struct fb_info *info,
+ struct fb_copyarea *copy)
+{
+ int ret = 0;
+ if (!lock_fb_info(info))
+ return -ENODEV;
+ if (copy->dx >= info->var.xres ||
+ copy->sx >= info->var.xres ||
+ copy->width > info->var.xres ||
+ copy->dy >= info->var.yres ||
+ copy->sy >= info->var.yres ||
+ copy->height > info->var.yres ||
+ copy->dx + copy->width > info->var.xres ||
+ copy->sx + copy->width > info->var.xres ||
+ copy->dy + copy->height > info->var.yres ||
+ copy->sy + copy->height > info->var.yres) {
+ ret = -EINVAL;
+ goto out;
+ }
+ info->fbops->fb_copyarea(info, copy);
+out:
+ unlock_fb_info(info);
+ return ret;
+}
+
static long do_fb_ioctl(struct fb_info *info, unsigned int cmd,
unsigned long arg)
{
@@ -1094,6 +1119,7 @@ static long do_fb_ioctl(struct fb_info *
struct fb_cmap cmap_from;
struct fb_cmap_user cmap;
struct fb_event event;
+ struct fb_copyarea copy;
void __user *argp = (void __user *)arg;
long ret = 0;
@@ -1211,6 +1237,15 @@ static long do_fb_ioctl(struct fb_info *
unlock_fb_info(info);
console_unlock();
break;
+ case FBIOCOPYAREA:
+ if (info->flags & FBINFO_HWACCEL_COPYAREA) {
+ /* only provide this ioctl if it is accelerated */
+ if (copy_from_user(&copy, argp, sizeof(copy)))
+ return -EFAULT;
+ ret = fb_copyarea_user(info, &copy);
+ break;
+ }
+ /* fall through */
default:
if (!lock_fb_info(info))
return -ENODEV;
@@ -1365,6 +1400,7 @@ static long fb_compat_ioctl(struct file
case FBIOPAN_DISPLAY:
case FBIOGET_CON2FBMAP:
case FBIOPUT_CON2FBMAP:
+ case FBIOCOPYAREA:
arg = (unsigned long) compat_ptr(arg);
case FBIOBLANK:
ret = do_fb_ioctl(info, cmd, arg);
--- a/include/uapi/linux/fb.h
+++ b/include/uapi/linux/fb.h
@@ -34,6 +34,12 @@
#define FBIOPUT_MODEINFO 0x4617
#define FBIOGET_DISPINFO 0x4618
#define FBIO_WAITFORVSYNC _IOW('F', 0x20, __u32)
+/*
+ * HACK: use 'z' in order not to clash with any other ioctl numbers which might
+ * be concurrently added to the mainline kernel
+ */
+#define FBIOCOPYAREA _IOW('z', 0x21, struct fb_copyarea)
+#define FBIODMACOPY _IOW('z', 0x22, struct fb_dmacopy)
#define FB_TYPE_PACKED_PIXELS 0 /* Packed Pixels */
#define FB_TYPE_PLANES 1 /* Non interleaved planes */
@@ -346,6 +352,12 @@ struct fb_copyarea {
__u32 sy;
};
+struct fb_dmacopy {
+ void *dst;
+ __u32 src;
+ __u32 length;
+};
+
struct fb_fillrect {
__u32 dx; /* screen-relative */
__u32 dy;

209
target/linux/brcm2708/patches-4.9/0057-Speed-up-console-framebuffer-imageblit-function.patch Normal file
View File

@ -0,0 +1,209 @@
From 11db806d75a8958fb706d8a1b4e67818a04d68c7 Mon Sep 17 00:00:00 2001
From: Harm Hanemaaijer <fgenfb@yahoo.com>
Date: Thu, 20 Jun 2013 20:21:39 +0200
Subject: [PATCH] Speed up console framebuffer imageblit function
Especially on platforms with a slower CPU but a relatively high
framebuffer fill bandwidth, like current ARM devices, the existing
console monochrome imageblit function used to draw console text is
suboptimal for common pixel depths such as 16bpp and 32bpp. The existing
code is quite general and can deal with several pixel depths. By creating
special case functions for 16bpp and 32bpp, by far the most common pixel
formats used on modern systems, a significant speed-up is attained
which can be readily felt on ARM-based devices like the Raspberry Pi
and the Allwinner platform, but should help any platform using the
fb layer.
The special case functions allow constant folding, eliminating a number
of instructions including divide operations, and allow the use of an
unrolled loop, eliminating instructions with a variable shift size,
reducing source memory access instructions, and eliminating excessive
branching. These unrolled loops also allow much better code optimization
by the C compiler. The code that selects which optimized variant is used
is also simplified, eliminating integer divide instructions.
The speed-up, measured by timing 'cat file.txt' in the console, varies
between 40% and 70%, when testing on the Raspberry Pi and Allwinner
ARM-based platforms, depending on font size and the pixel depth, with
the greater benefit for 32bpp.
Signed-off-by: Harm Hanemaaijer <fgenfb@yahoo.com>
---
drivers/video/fbdev/core/cfbimgblt.c | 152 +++++++++++++++++++++++++++++++++--
1 file changed, 147 insertions(+), 5 deletions(-)
--- a/drivers/video/fbdev/core/cfbimgblt.c
+++ b/drivers/video/fbdev/core/cfbimgblt.c
@@ -28,6 +28,11 @@
*
* Also need to add code to deal with cards endians that are different than
* the native cpu endians. I also need to deal with MSB position in the word.
+ * Modified by Harm Hanemaaijer (fgenfb@yahoo.com) 2013:
+ * - Provide optimized versions of fast_imageblit for 16 and 32bpp that are
+ * significantly faster than the previous implementation.
+ * - Simplify the fast/slow_imageblit selection code, avoiding integer
+ * divides.
*/
#include <linux/module.h>
#include <linux/string.h>
@@ -262,6 +267,133 @@ static inline void fast_imageblit(const
}
}
+/*
+ * Optimized fast_imageblit for bpp == 16. ppw = 2, bit_mask = 3 folded
+ * into the code, main loop unrolled.
+ */
+
+static inline void fast_imageblit16(const struct fb_image *image,
+ struct fb_info *p, u8 __iomem * dst1,
+ u32 fgcolor, u32 bgcolor)
+{
+ u32 fgx = fgcolor, bgx = bgcolor;
+ u32 spitch = (image->width + 7) / 8;
+ u32 end_mask, eorx;
+ const char *s = image->data, *src;
+ u32 __iomem *dst;
+ const u32 *tab = NULL;
+ int i, j, k;
+
+ tab = fb_be_math(p) ? cfb_tab16_be : cfb_tab16_le;
+
+ fgx <<= 16;
+ bgx <<= 16;
+ fgx |= fgcolor;
+ bgx |= bgcolor;
+
+ eorx = fgx ^ bgx;
+ k = image->width / 2;
+
+ for (i = image->height; i--;) {
+ dst = (u32 __iomem *) dst1;
+ src = s;
+
+ j = k;
+ while (j >= 4) {
+ u8 bits = *src;
+ end_mask = tab[(bits >> 6) & 3];
+ FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+ end_mask = tab[(bits >> 4) & 3];
+ FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+ end_mask = tab[(bits >> 2) & 3];
+ FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+ end_mask = tab[bits & 3];
+ FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+ src++;
+ j -= 4;
+ }
+ if (j != 0) {
+ u8 bits = *src;
+ end_mask = tab[(bits >> 6) & 3];
+ FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+ if (j >= 2) {
+ end_mask = tab[(bits >> 4) & 3];
+ FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+ if (j == 3) {
+ end_mask = tab[(bits >> 2) & 3];
+ FB_WRITEL((end_mask & eorx) ^ bgx, dst);
+ }
+ }
+ }
+ dst1 += p->fix.line_length;
+ s += spitch;
+ }
+}
+
+/*
+ * Optimized fast_imageblit for bpp == 32. ppw = 1, bit_mask = 1 folded
+ * into the code, main loop unrolled.
+ */
+
+static inline void fast_imageblit32(const struct fb_image *image,
+ struct fb_info *p, u8 __iomem * dst1,
+ u32 fgcolor, u32 bgcolor)
+{
+ u32 fgx = fgcolor, bgx = bgcolor;
+ u32 spitch = (image->width + 7) / 8;
+ u32 end_mask, eorx;
+ const char *s = image->data, *src;
+ u32 __iomem *dst;
+ const u32 *tab = NULL;
+ int i, j, k;
+
+ tab = cfb_tab32;
+
+ eorx = fgx ^ bgx;
+ k = image->width;
+
+ for (i = image->height; i--;) {
+ dst = (u32 __iomem *) dst1;
+ src = s;
+
+ j = k;
+ while (j >= 8) {
+ u8 bits = *src;
+ end_mask = tab[(bits >> 7) & 1];
+ FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+ end_mask = tab[(bits >> 6) & 1];
+ FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+ end_mask = tab[(bits >> 5) & 1];
+ FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+ end_mask = tab[(bits >> 4) & 1];
+ FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+ end_mask = tab[(bits >> 3) & 1];
+ FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+ end_mask = tab[(bits >> 2) & 1];
+ FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+ end_mask = tab[(bits >> 1) & 1];
+ FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+ end_mask = tab[bits & 1];
+ FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+ src++;
+ j -= 8;
+ }
+ if (j != 0) {
+ u32 bits = (u32) * src;
+ while (j > 1) {
+ end_mask = tab[(bits >> 7) & 1];
+ FB_WRITEL((end_mask & eorx) ^ bgx, dst++);
+ bits <<= 1;
+ j--;
+ }
+ end_mask = tab[(bits >> 7) & 1];
+ FB_WRITEL((end_mask & eorx) ^ bgx, dst);
+ }
+ dst1 += p->fix.line_length;
+ s += spitch;
+ }
+}
+
void cfb_imageblit(struct fb_info *p, const struct fb_image *image)
{
u32 fgcolor, bgcolor, start_index, bitstart, pitch_index = 0;
@@ -294,11 +426,21 @@ void cfb_imageblit(struct fb_info *p, co
bgcolor = image->bg_color;
}
- if (32 % bpp == 0 && !start_index && !pitch_index &&
- ((width & (32/bpp-1)) == 0) &&
- bpp >= 8 && bpp <= 32)
- fast_imageblit(image, p, dst1, fgcolor, bgcolor);
- else
+ if (!start_index && !pitch_index) {
+ if (bpp == 32)
+ fast_imageblit32(image, p, dst1, fgcolor,
+ bgcolor);
+ else if (bpp == 16 && (width & 1) == 0)
+ fast_imageblit16(image, p, dst1, fgcolor,
+ bgcolor);
+ else if (bpp == 8 && (width & 3) == 0)
+ fast_imageblit(image, p, dst1, fgcolor,
+ bgcolor);
+ else
+ slow_imageblit(image, p, dst1, fgcolor,
+ bgcolor,
+ start_index, pitch_index);
+ } else
slow_imageblit(image, p, dst1, fgcolor, bgcolor,
start_index, pitch_index);
} else

242
target/linux/brcm2708/patches-4.9/0058-enabling-the-realtime-clock-1-wire-chip-DS1307-and-1.patch Normal file
View File

@ -0,0 +1,242 @@
From d387edf492067aa0d298b90829b784f640375e7c Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Wed, 8 May 2013 11:46:50 +0100
Subject: [PATCH] enabling the realtime clock 1-wire chip DS1307 and 1-wire on
GPIO4 (as a module)
1-wire: Add support for configuring pin for w1-gpio kernel module
See: https://github.com/raspberrypi/linux/pull/457
Add bitbanging pullups, use them for w1-gpio
Allows parasite power to work, uses module option pullup=1
bcm2708: Ensure 1-wire pullup is disabled by default, and expose as module parameter
Signed-off-by: Alex J Lennon <ajlennon@dynamicdevices.co.uk>
w1-gpio: Add gpiopin module parameter and correctly free up gpio pull-up pin, if set
Signed-off-by: Alex J Lennon <ajlennon@dynamicdevices.co.uk>
w1-gpio: Sort out the pullup/parasitic power tangle
---
drivers/w1/masters/w1-gpio.c | 69 ++++++++++++++++++++++++++++++++++++++++----
drivers/w1/w1.h | 6 ++++
drivers/w1/w1_int.c | 14 +++++++++
drivers/w1/w1_io.c | 18 ++++++++++--
include/linux/w1-gpio.h | 1 +
5 files changed, 99 insertions(+), 9 deletions(-)
--- a/drivers/w1/masters/w1-gpio.c
+++ b/drivers/w1/masters/w1-gpio.c
@@ -23,6 +23,19 @@
#include "../w1.h"
#include "../w1_int.h"
+static int w1_gpio_pullup = 0;
+static int w1_gpio_pullup_orig = 0;
+module_param_named(pullup, w1_gpio_pullup, int, 0);
+MODULE_PARM_DESC(pullup, "Enable parasitic power (power on data) mode");
+static int w1_gpio_pullup_pin = -1;
+static int w1_gpio_pullup_pin_orig = -1;
+module_param_named(extpullup, w1_gpio_pullup_pin, int, 0);
+MODULE_PARM_DESC(extpullup, "GPIO external pullup pin number");
+static int w1_gpio_pin = -1;
+static int w1_gpio_pin_orig = -1;
+module_param_named(gpiopin, w1_gpio_pin, int, 0);
+MODULE_PARM_DESC(gpiopin, "GPIO pin number");
+
static u8 w1_gpio_set_pullup(void *data, int delay)
{
struct w1_gpio_platform_data *pdata = data;
@@ -67,6 +80,16 @@ static u8 w1_gpio_read_bit(void *data)
return gpio_get_value(pdata->pin) ? 1 : 0;
}
+static void w1_gpio_bitbang_pullup(void *data, u8 on)
+{
+ struct w1_gpio_platform_data *pdata = data;
+
+ if (on)
+ gpio_direction_output(pdata->pin, 1);
+ else
+ gpio_direction_input(pdata->pin);
+}
+
#if defined(CONFIG_OF)
static const struct of_device_id w1_gpio_dt_ids[] = {
{ .compatible = "w1-gpio" },
@@ -80,6 +103,7 @@ static int w1_gpio_probe_dt(struct platf
struct w1_gpio_platform_data *pdata = dev_get_platdata(&pdev->dev);
struct device_node *np = pdev->dev.of_node;
int gpio;
+ u32 value;
pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
@@ -88,6 +112,9 @@ static int w1_gpio_probe_dt(struct platf
if (of_get_property(np, "linux,open-drain", NULL))
pdata->is_open_drain = 1;
+ if (of_property_read_u32(np, "rpi,parasitic-power", &value) == 0)
+ pdata->parasitic_power = (value != 0);
+
gpio = of_get_gpio(np, 0);
if (gpio < 0) {
if (gpio != -EPROBE_DEFER)
@@ -103,7 +130,7 @@ static int w1_gpio_probe_dt(struct platf
if (gpio == -EPROBE_DEFER)
return gpio;
/* ignore other errors as the pullup gpio is optional */
- pdata->ext_pullup_enable_pin = gpio;
+ pdata->ext_pullup_enable_pin = (gpio >= 0) ? gpio : -1;
pdev->dev.platform_data = pdata;
@@ -113,13 +140,15 @@ static int w1_gpio_probe_dt(struct platf
static int w1_gpio_probe(struct platform_device *pdev)
{
struct w1_bus_master *master;
- struct w1_gpio_platform_data *pdata;
+ struct w1_gpio_platform_data *pdata = pdev->dev.platform_data;
int err;
- if (of_have_populated_dt()) {
- err = w1_gpio_probe_dt(pdev);
- if (err < 0)
- return err;
+ if(pdata == NULL) {
+ if (of_have_populated_dt()) {
+ err = w1_gpio_probe_dt(pdev);
+ if (err < 0)
+ return err;
+ }
}
pdata = dev_get_platdata(&pdev->dev);
@@ -136,6 +165,22 @@ static int w1_gpio_probe(struct platform
return -ENOMEM;
}
+ w1_gpio_pin_orig = pdata->pin;
+ w1_gpio_pullup_pin_orig = pdata->ext_pullup_enable_pin;
+ w1_gpio_pullup_orig = pdata->parasitic_power;
+
+ if(gpio_is_valid(w1_gpio_pin)) {
+ pdata->pin = w1_gpio_pin;
+ pdata->ext_pullup_enable_pin = -1;
+ pdata->parasitic_power = -1;
+ }
+ pdata->parasitic_power |= w1_gpio_pullup;
+ if(gpio_is_valid(w1_gpio_pullup_pin)) {
+ pdata->ext_pullup_enable_pin = w1_gpio_pullup_pin;
+ }
+
+ dev_info(&pdev->dev, "gpio pin %d, external pullup pin %d, parasitic power %d\n", pdata->pin, pdata->ext_pullup_enable_pin, pdata->parasitic_power);
+
err = devm_gpio_request(&pdev->dev, pdata->pin, "w1");
if (err) {
dev_err(&pdev->dev, "gpio_request (pin) failed\n");
@@ -165,6 +210,14 @@ static int w1_gpio_probe(struct platform
master->set_pullup = w1_gpio_set_pullup;
}
+ if (pdata->parasitic_power) {
+ if (pdata->is_open_drain)
+ printk(KERN_ERR "w1-gpio 'pullup'(parasitic power) "
+ "option doesn't work with open drain GPIO\n");
+ else
+ master->bitbang_pullup = w1_gpio_bitbang_pullup;
+ }
+
err = w1_add_master_device(master);
if (err) {
dev_err(&pdev->dev, "w1_add_master device failed\n");
@@ -195,6 +248,10 @@ static int w1_gpio_remove(struct platfor
w1_remove_master_device(master);
+ pdata->pin = w1_gpio_pin_orig;
+ pdata->ext_pullup_enable_pin = w1_gpio_pullup_pin_orig;
+ pdata->parasitic_power = w1_gpio_pullup_orig;
+
return 0;
}
--- a/drivers/w1/w1.h
+++ b/drivers/w1/w1.h
@@ -173,6 +173,12 @@ struct w1_bus_master
u8 (*set_pullup)(void *, int);
+ /**
+ * Turns the pullup on/off in bitbanging mode, takes an on/off argument.
+ * @return -1=Error, 0=completed
+ */
+ void (*bitbang_pullup) (void *, u8);
+
void (*search)(void *, struct w1_master *,
u8, w1_slave_found_callback);
};
--- a/drivers/w1/w1_int.c
+++ b/drivers/w1/w1_int.c
@@ -122,6 +122,20 @@ int w1_add_master_device(struct w1_bus_m
return(-EINVAL);
}
+ /* bitbanging hardware uses bitbang_pullup, other hardware uses set_pullup
+ * and takes care of timing itself */
+ if (!master->write_byte && !master->touch_bit && master->set_pullup) {
+ printk(KERN_ERR "w1_add_master_device: set_pullup requires "
+ "write_byte or touch_bit, disabling\n");
+ master->set_pullup = NULL;
+ }
+
+ if (master->set_pullup && master->bitbang_pullup) {
+ printk(KERN_ERR "w1_add_master_device: set_pullup should not "
+ "be set when bitbang_pullup is used, disabling\n");
+ master->set_pullup = NULL;
+ }
+
/* Lock until the device is added (or not) to w1_masters. */
mutex_lock(&w1_mlock);
/* Search for the first available id (starting at 1). */
--- a/drivers/w1/w1_io.c
+++ b/drivers/w1/w1_io.c
@@ -134,10 +134,22 @@ static void w1_pre_write(struct w1_maste
static void w1_post_write(struct w1_master *dev)
{
if (dev->pullup_duration) {
- if (dev->enable_pullup && dev->bus_master->set_pullup)
- dev->bus_master->set_pullup(dev->bus_master->data, 0);
- else
+ if (dev->enable_pullup) {
+ if (dev->bus_master->set_pullup) {
+ dev->bus_master->set_pullup(dev->
+ bus_master->data,
+ 0);
+ } else if (dev->bus_master->bitbang_pullup) {
+ dev->bus_master->
+ bitbang_pullup(dev->bus_master->data, 1);
msleep(dev->pullup_duration);
+ dev->bus_master->
+ bitbang_pullup(dev->bus_master->data, 0);
+ }
+ } else {
+ msleep(dev->pullup_duration);
+ }
+
dev->pullup_duration = 0;
}
}
--- a/include/linux/w1-gpio.h
+++ b/include/linux/w1-gpio.h
@@ -18,6 +18,7 @@
struct w1_gpio_platform_data {
unsigned int pin;
unsigned int is_open_drain:1;
+ unsigned int parasitic_power:1;
void (*enable_external_pullup)(int enable);
unsigned int ext_pullup_enable_pin;
unsigned int pullup_duration;

22
target/linux/brcm2708/patches-4.9/0059-Added-Device-IDs-for-August-DVB-T-205.patch Normal file
View File

@ -0,0 +1,22 @@
From c7850d63ac4cf12c0a70c2014cc2451a5118e717 Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Wed, 3 Jul 2013 00:54:08 +0100
Subject: [PATCH] Added Device IDs for August DVB-T 205
---
drivers/media/usb/dvb-usb-v2/rtl28xxu.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/media/usb/dvb-usb-v2/rtl28xxu.c
+++ b/drivers/media/usb/dvb-usb-v2/rtl28xxu.c
@@ -1916,6 +1916,10 @@ static const struct usb_device_id rtl28x
&rtl28xxu_props, "Compro VideoMate U650F", NULL) },
{ DVB_USB_DEVICE(USB_VID_KWORLD_2, 0xd394,
&rtl28xxu_props, "MaxMedia HU394-T", NULL) },
+ { DVB_USB_DEVICE(USB_VID_GTEK, 0xb803 /*USB_PID_AUGUST_DVBT205*/,
+ &rtl28xxu_props, "August DVB-T 205", NULL) },
+ { DVB_USB_DEVICE(USB_VID_GTEK, 0xa803 /*USB_PID_AUGUST_DVBT205*/,
+ &rtl28xxu_props, "August DVB-T 205", NULL) },
{ DVB_USB_DEVICE(USB_VID_LEADTEK, 0x6a03,
&rtl28xxu_props, "Leadtek WinFast DTV Dongle mini", NULL) },
{ DVB_USB_DEVICE(USB_VID_GTEK, USB_PID_CPYTO_REDI_PC50A,

50
target/linux/brcm2708/patches-4.9/0060-config-Enable-CONFIG_MEMCG-but-leave-it-disabled-due.patch Normal file
View File

@ -0,0 +1,50 @@
From d8fe940fffef38e498beaa5bd182647452d98de9 Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Wed, 18 Dec 2013 22:16:19 +0000
Subject: [PATCH] config: Enable CONFIG_MEMCG, but leave it disabled (due to
memory cost). Enable with cgroup_enable=memory.
---
kernel/cgroup.c | 24 +++++++++++++++++++++++-
1 file changed, 23 insertions(+), 1 deletion(-)
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -5629,7 +5629,7 @@ int __init cgroup_init_early(void)
return 0;
}
-static u16 cgroup_disable_mask __initdata;
+static u16 cgroup_disable_mask __initdata = 1<<0;
/**
* cgroup_init - cgroup initialization
@@ -6166,6 +6166,28 @@ static int __init cgroup_no_v1(char *str
}
__setup("cgroup_no_v1=", cgroup_no_v1);
+static int __init cgroup_enable(char *str)
+{
+ struct cgroup_subsys *ss;
+ char *token;
+ int i;
+
+ while ((token = strsep(&str, ",")) != NULL) {
+ if (!*token)
+ continue;
+
+ for_each_subsys(ss, i) {
+ if (strcmp(token, ss->name) &&
+ strcmp(token, ss->legacy_name))
+ continue;
+
+ cgroup_disable_mask &= ~(1 << i);
+ }
+ }
+ return 1;
+}
+__setup("cgroup_enable=", cgroup_enable);
+
/**
* css_tryget_online_from_dir - get corresponding css from a cgroup dentry
* @dentry: directory dentry of interest

36
target/linux/brcm2708/patches-4.9/0061-hid-Reduce-default-mouse-polling-interval-to-60Hz.patch Normal file
View File

@ -0,0 +1,36 @@
From 1697df63a0dd1cdc54f304cfb7c4a3a997661f06 Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Mon, 14 Jul 2014 22:02:09 +0100
Subject: [PATCH] hid: Reduce default mouse polling interval to 60Hz
Reduces overhead when using X
---
drivers/hid/usbhid/hid-core.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -49,7 +49,7 @@
* Module parameters.
*/
-static unsigned int hid_mousepoll_interval;
+static unsigned int hid_mousepoll_interval = ~0;
module_param_named(mousepoll, hid_mousepoll_interval, uint, 0644);
MODULE_PARM_DESC(mousepoll, "Polling interval of mice");
@@ -1083,8 +1083,12 @@ static int usbhid_start(struct hid_devic
}
/* Change the polling interval of mice. */
- if (hid->collection->usage == HID_GD_MOUSE && hid_mousepoll_interval > 0)
- interval = hid_mousepoll_interval;
+ if (hid->collection->usage == HID_GD_MOUSE) {
+ if (hid_mousepoll_interval == ~0 && interval < 16)
+ interval = 16;
+ else if (hid_mousepoll_interval != ~0 && hid_mousepoll_interval != 0)
+ interval = hid_mousepoll_interval;
+ }
ret = -ENOMEM;
if (usb_endpoint_dir_in(endpoint)) {

351
target/linux/brcm2708/patches-4.9/0062-rpi-ft5406-Add-touchscreen-driver-for-pi-LCD-display.patch Normal file
View File

@ -0,0 +1,351 @@
From e7fa4e5d3db9996074a22db9eff4833d33d11fb6 Mon Sep 17 00:00:00 2001
From: Gordon Hollingworth <gordon@raspberrypi.org>
Date: Tue, 12 May 2015 14:47:56 +0100
Subject: [PATCH] rpi-ft5406: Add touchscreen driver for pi LCD display
Fix driver detection failure Check that the buffer response is non-zero meaning the touchscreen was detected
rpi-ft5406: Use firmware API
RPI-FT5406: Enable aarch64 support through explicit iomem interface
Signed-off-by: Gerhard de Clercq <gerharddeclercq@outlook.com>
---
drivers/input/touchscreen/Kconfig | 7 +
drivers/input/touchscreen/Makefile | 1 +
drivers/input/touchscreen/rpi-ft5406.c | 292 +++++++++++++++++++++++++++++
include/soc/bcm2835/raspberrypi-firmware.h | 1 +
4 files changed, 301 insertions(+)
create mode 100644 drivers/input/touchscreen/rpi-ft5406.c
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -638,6 +638,13 @@ config TOUCHSCREEN_EDT_FT5X06
To compile this driver as a module, choose M here: the
module will be called edt-ft5x06.
+config TOUCHSCREEN_RPI_FT5406
+ tristate "Raspberry Pi FT5406 driver"
+ depends on RASPBERRYPI_FIRMWARE
+ help
+ Say Y here to enable the Raspberry Pi memory based FT5406 device
+
+
config TOUCHSCREEN_MIGOR
tristate "Renesas MIGO-R touchscreen"
depends on (SH_MIGOR || COMPILE_TEST) && I2C
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -29,6 +29,7 @@ obj-$(CONFIG_TOUCHSCREEN_DA9034) += da90
obj-$(CONFIG_TOUCHSCREEN_DA9052) += da9052_tsi.o
obj-$(CONFIG_TOUCHSCREEN_DYNAPRO) += dynapro.o
obj-$(CONFIG_TOUCHSCREEN_EDT_FT5X06) += edt-ft5x06.o
+obj-$(CONFIG_TOUCHSCREEN_RPI_FT5406) += rpi-ft5406.o
obj-$(CONFIG_TOUCHSCREEN_HAMPSHIRE) += hampshire.o
obj-$(CONFIG_TOUCHSCREEN_GUNZE) += gunze.o
obj-$(CONFIG_TOUCHSCREEN_EETI) += eeti_ts.o
--- /dev/null
+++ b/drivers/input/touchscreen/rpi-ft5406.c
@@ -0,0 +1,292 @@
+/*
+ * Driver for memory based ft5406 touchscreen
+ *
+ * Copyright (C) 2015 Raspberry Pi
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/input.h>
+#include <linux/irq.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/bitops.h>
+#include <linux/input/mt.h>
+#include <linux/kthread.h>
+#include <linux/platform_device.h>
+#include <linux/stddef.h>
+#include <asm/io.h>
+#include <linux/dma-mapping.h>
+#include <soc/bcm2835/raspberrypi-firmware.h>
+
+#define MAXIMUM_SUPPORTED_POINTS 10
+struct ft5406_regs {
+ uint8_t device_mode;
+ uint8_t gesture_id;
+ uint8_t num_points;
+ struct ft5406_touch {
+ uint8_t xh;
+ uint8_t xl;
+ uint8_t yh;
+ uint8_t yl;
+ uint8_t res1;
+ uint8_t res2;
+ } point[MAXIMUM_SUPPORTED_POINTS];
+};
+
+#define SCREEN_WIDTH 800
+#define SCREEN_HEIGHT 480
+
+struct ft5406 {
+ struct platform_device * pdev;
+ struct input_dev * input_dev;
+ void __iomem * ts_base;
+ dma_addr_t bus_addr;
+ struct task_struct * thread;
+};
+
+/* Thread to poll for touchscreen events
+ *
+ * This thread polls the memory based register copy of the ft5406 registers
+ * using the number of points register to know whether the copy has been
+ * updated (we write 99 to the memory copy, the GPU will write between
+ * 0 - 10 points)
+ */
+static int ft5406_thread(void *arg)
+{
+ struct ft5406 *ts = (struct ft5406 *) arg;
+ struct ft5406_regs regs;
+ int known_ids = 0;
+
+ while(!kthread_should_stop())
+ {
+ // 60fps polling
+ msleep_interruptible(17);
+ memcpy_fromio(&regs, ts->ts_base, sizeof(struct ft5406_regs));
+ iowrite8(99, ts->ts_base + offsetof(struct ft5406_regs, num_points));
+ // Do not output if theres no new information (num_points is 99)
+ // or we have no touch points and don't need to release any
+ if(!(regs.num_points == 99 || (regs.num_points == 0 && known_ids == 0)))
+ {
+ int i;
+ int modified_ids = 0, released_ids;
+ for(i = 0; i < regs.num_points; i++)
+ {
+ int x = (((int) regs.point[i].xh & 0xf) << 8) + regs.point[i].xl;
+ int y = (((int) regs.point[i].yh & 0xf) << 8) + regs.point[i].yl;
+ int touchid = (regs.point[i].yh >> 4) & 0xf;
+
+ modified_ids |= 1 << touchid;
+
+ if(!((1 << touchid) & known_ids))
+ dev_dbg(&ts->pdev->dev, "x = %d, y = %d, touchid = %d\n", x, y, touchid);
+
+ input_mt_slot(ts->input_dev, touchid);
+ input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, 1);
+
+ input_report_abs(ts->input_dev, ABS_MT_POSITION_X, x);
+ input_report_abs(ts->input_dev, ABS_MT_POSITION_Y, y);
+
+ }
+
+ released_ids = known_ids & ~modified_ids;
+ for(i = 0; released_ids && i < MAXIMUM_SUPPORTED_POINTS; i++)
+ {
+ if(released_ids & (1<<i))
+ {
+ dev_dbg(&ts->pdev->dev, "Released %d, known = %x modified = %x\n", i, known_ids, modified_ids);
+ input_mt_slot(ts->input_dev, i);
+ input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, 0);
+ modified_ids &= ~(1 << i);
+ }
+ }
+ known_ids = modified_ids;
+
+ input_mt_report_pointer_emulation(ts->input_dev, true);
+ input_sync(ts->input_dev);
+ }
+
+ }
+
+ return 0;
+}
+
+static int ft5406_probe(struct platform_device *pdev)
+{
+ int err = 0;
+ struct device *dev = &pdev->dev;
+ struct device_node *np = dev->of_node;
+ struct ft5406 * ts;
+ struct device_node *fw_node;
+ struct rpi_firmware *fw;
+ u32 touchbuf;
+
+ dev_info(dev, "Probing device\n");
+
+ fw_node = of_parse_phandle(np, "firmware", 0);
+ if (!fw_node) {
+ dev_err(dev, "Missing firmware node\n");
+ return -ENOENT;
+ }
+
+ fw = rpi_firmware_get(fw_node);
+ if (!fw)
+ return -EPROBE_DEFER;
+
+ ts = devm_kzalloc(dev, sizeof(struct ft5406), GFP_KERNEL);
+ if (!ts) {
+ dev_err(dev, "Failed to allocate memory\n");
+ return -ENOMEM;
+ }
+
+ ts->input_dev = input_allocate_device();
+ if (!ts->input_dev) {
+ dev_err(dev, "Failed to allocate input device\n");
+ return -ENOMEM;
+ }
+
+ ts->ts_base = dma_zalloc_coherent(dev, PAGE_SIZE, &ts->bus_addr, GFP_KERNEL);
+ if (!ts->ts_base) {
+ pr_err("[%s]: failed to dma_alloc_coherent(%ld)\n",
+ __func__, PAGE_SIZE);
+ err = -ENOMEM;
+ goto out;
+ }
+
+ touchbuf = (u32)ts->bus_addr;
+ err = rpi_firmware_property(fw, RPI_FIRMWARE_FRAMEBUFFER_SET_TOUCHBUF,
+ &touchbuf, sizeof(touchbuf));
+
+ if (err || touchbuf != 0) {
+ dev_warn(dev, "Failed to set touchbuf, trying to get err:%x\n", err);
+ dma_free_coherent(dev, PAGE_SIZE, ts->ts_base, ts->bus_addr);
+ ts->ts_base = 0;
+ ts->bus_addr = 0;
+ }
+
+ if (!ts->ts_base) {
+ dev_warn(dev, "set failed, trying get (err:%d touchbuf:%x virt:%p bus:%x)\n", err, touchbuf, ts->ts_base, ts->bus_addr);
+
+ err = rpi_firmware_property(fw, RPI_FIRMWARE_FRAMEBUFFER_GET_TOUCHBUF,
+ &touchbuf, sizeof(touchbuf));
+ if (err) {
+ dev_err(dev, "Failed to get touch buffer\n");
+ goto out;
+ }
+
+ if (!touchbuf) {
+ dev_err(dev, "Touchscreen not detected\n");
+ err = -ENODEV;
+ goto out;
+ }
+
+ dev_dbg(dev, "Got TS buffer 0x%x\n", touchbuf);
+
+ // mmap the physical memory
+ touchbuf &= ~0xc0000000;
+ ts->ts_base = ioremap(touchbuf, sizeof(struct ft5406_regs));
+ if (ts->ts_base == NULL)
+ {
+ dev_err(dev, "Failed to map physical address\n");
+ err = -ENOMEM;
+ goto out;
+ }
+ }
+ platform_set_drvdata(pdev, ts);
+ ts->pdev = pdev;
+
+ ts->input_dev->name = "FT5406 memory based driver";
+
+ __set_bit(EV_KEY, ts->input_dev->evbit);
+ __set_bit(EV_SYN, ts->input_dev->evbit);
+ __set_bit(EV_ABS, ts->input_dev->evbit);
+
+ input_set_abs_params(ts->input_dev, ABS_MT_POSITION_X, 0,
+ SCREEN_WIDTH, 0, 0);
+ input_set_abs_params(ts->input_dev, ABS_MT_POSITION_Y, 0,
+ SCREEN_HEIGHT, 0, 0);
+
+ input_mt_init_slots(ts->input_dev, MAXIMUM_SUPPORTED_POINTS, INPUT_MT_DIRECT);
+
+ input_set_drvdata(ts->input_dev, ts);
+
+ err = input_register_device(ts->input_dev);
+ if (err) {
+ dev_err(dev, "could not register input device, %d\n",
+ err);
+ goto out;
+ }
+
+ // create thread to poll the touch events
+ ts->thread = kthread_run(ft5406_thread, ts, "ft5406");
+ if(ts->thread == NULL)
+ {
+ dev_err(dev, "Failed to create kernel thread");
+ err = -ENOMEM;
+ goto out;
+ }
+
+ return 0;
+
+out:
+ if (ts->bus_addr) {
+ dma_free_coherent(dev, PAGE_SIZE, ts->ts_base, ts->bus_addr);
+ ts->bus_addr = 0;
+ ts->ts_base = NULL;
+ } else if (ts->ts_base) {
+ iounmap(ts->ts_base);
+ ts->ts_base = NULL;
+ }
+ if (ts->input_dev) {
+ input_unregister_device(ts->input_dev);
+ ts->input_dev = NULL;
+ }
+ return err;
+}
+
+static int ft5406_remove(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct ft5406 *ts = (struct ft5406 *) platform_get_drvdata(pdev);
+
+ dev_info(dev, "Removing rpi-ft5406\n");
+
+ kthread_stop(ts->thread);
+
+ if (ts->bus_addr)
+ dma_free_coherent(dev, PAGE_SIZE, ts->ts_base, ts->bus_addr);
+ else if (ts->ts_base)
+ iounmap(ts->ts_base);
+ if (ts->input_dev)
+ input_unregister_device(ts->input_dev);
+
+ return 0;
+}
+
+static const struct of_device_id ft5406_match[] = {
+ { .compatible = "rpi,rpi-ft5406", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, ft5406_match);
+
+static struct platform_driver ft5406_driver = {
+ .driver = {
+ .name = "rpi-ft5406",
+ .owner = THIS_MODULE,
+ .of_match_table = ft5406_match,
+ },
+ .probe = ft5406_probe,
+ .remove = ft5406_remove,
+};
+
+module_platform_driver(ft5406_driver);
+
+MODULE_AUTHOR("Gordon Hollingworth");
+MODULE_DESCRIPTION("Touchscreen driver for memory based FT5406");
+MODULE_LICENSE("GPL");
--- a/include/soc/bcm2835/raspberrypi-firmware.h
+++ b/include/soc/bcm2835/raspberrypi-firmware.h
@@ -115,6 +115,7 @@ enum rpi_firmware_property_tag {
RPI_FIRMWARE_FRAMEBUFFER_SET_VIRTUAL_OFFSET = 0x00048009,
RPI_FIRMWARE_FRAMEBUFFER_SET_OVERSCAN = 0x0004800a,
RPI_FIRMWARE_FRAMEBUFFER_SET_PALETTE = 0x0004800b,
+ RPI_FIRMWARE_FRAMEBUFFER_SET_TOUCHBUF = 0x0004801f,
RPI_FIRMWARE_FRAMEBUFFER_SET_VSYNC = 0x0004800e,
RPI_FIRMWARE_FRAMEBUFFER_SET_BACKLIGHT = 0x0004800f,

1543
target/linux/brcm2708/patches-4.9/0063-Improve-__copy_to_user-and-__copy_from_user-performa.patch Normal file
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File diff suppressed because it is too large Load Diff

35
target/linux/brcm2708/patches-4.9/0064-gpio-poweroff-Allow-it-to-work-on-Raspberry-Pi.patch Normal file
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@ -0,0 +1,35 @@
From da2b72916e1fa0824a139bda7f28216640d6727c Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Thu, 25 Jun 2015 12:16:11 +0100
Subject: [PATCH] gpio-poweroff: Allow it to work on Raspberry Pi
The Raspberry Pi firmware manages the power-down and reboot
process. To do this it installs a pm_power_off handler, causing
the gpio-poweroff module to abort the probe function.
This patch introduces a "force" DT property that overrides that
behaviour, and also adds a DT overlay to enable and control it.
Note that running in an active-low configuration (DT parameter
"active_low") requires a custom dt-blob.bin and probably won't
allow a reboot without switching off, so an external inversion
of the trigger signal may be preferable.
---
drivers/power/reset/gpio-poweroff.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/power/reset/gpio-poweroff.c
+++ b/drivers/power/reset/gpio-poweroff.c
@@ -49,9 +49,11 @@ static int gpio_poweroff_probe(struct pl
{
bool input = false;
enum gpiod_flags flags;
+ bool force = false;
/* If a pm_power_off function has already been added, leave it alone */
- if (pm_power_off != NULL) {
+ force = of_property_read_bool(pdev->dev.of_node, "force");
+ if (!force && (pm_power_off != NULL)) {
dev_err(&pdev->dev,
"%s: pm_power_off function already registered",
__func__);

837
target/linux/brcm2708/patches-4.9/0065-mfd-Add-Raspberry-Pi-Sense-HAT-core-driver.patch Normal file
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@ -0,0 +1,837 @@
From 91d2e7c60d71cd4450ee3ac68b8fcdfe7f93a1f0 Mon Sep 17 00:00:00 2001
From: Phil Elwell <pelwell@users.noreply.github.com>
Date: Tue, 14 Jul 2015 14:32:47 +0100
Subject: [PATCH] mfd: Add Raspberry Pi Sense HAT core driver
---
drivers/input/joystick/Kconfig | 8 +
drivers/input/joystick/Makefile | 1 +
drivers/input/joystick/rpisense-js.c | 153 ++++++++++++++++
drivers/mfd/Kconfig | 8 +
drivers/mfd/Makefile | 1 +
drivers/mfd/rpisense-core.c | 157 +++++++++++++++++
drivers/video/fbdev/Kconfig | 13 ++
drivers/video/fbdev/Makefile | 1 +
drivers/video/fbdev/rpisense-fb.c | 293 +++++++++++++++++++++++++++++++
include/linux/mfd/rpisense/core.h | 47 +++++
include/linux/mfd/rpisense/framebuffer.h | 32 ++++
include/linux/mfd/rpisense/joystick.h | 35 ++++
12 files changed, 749 insertions(+)
create mode 100644 drivers/input/joystick/rpisense-js.c
create mode 100644 drivers/mfd/rpisense-core.c
create mode 100644 drivers/video/fbdev/rpisense-fb.c
create mode 100644 include/linux/mfd/rpisense/core.h
create mode 100644 include/linux/mfd/rpisense/framebuffer.h
create mode 100644 include/linux/mfd/rpisense/joystick.h
--- a/drivers/input/joystick/Kconfig
+++ b/drivers/input/joystick/Kconfig
@@ -330,4 +330,12 @@ config JOYSTICK_MAPLE
To compile this as a module choose M here: the module will be called
maplecontrol.
+config JOYSTICK_RPISENSE
+ tristate "Raspberry Pi Sense HAT joystick"
+ depends on GPIOLIB && INPUT
+ select MFD_RPISENSE_CORE
+
+ help
+ This is the joystick driver for the Raspberry Pi Sense HAT
+
endif
--- a/drivers/input/joystick/Makefile
+++ b/drivers/input/joystick/Makefile
@@ -32,4 +32,5 @@ obj-$(CONFIG_JOYSTICK_WARRIOR) += warri
obj-$(CONFIG_JOYSTICK_XPAD) += xpad.o
obj-$(CONFIG_JOYSTICK_ZHENHUA) += zhenhua.o
obj-$(CONFIG_JOYSTICK_WALKERA0701) += walkera0701.o
+obj-$(CONFIG_JOYSTICK_RPISENSE) += rpisense-js.o
--- /dev/null
+++ b/drivers/input/joystick/rpisense-js.c
@@ -0,0 +1,153 @@
+/*
+ * Raspberry Pi Sense HAT joystick driver
+ * http://raspberrypi.org
+ *
+ * Copyright (C) 2015 Raspberry Pi
+ *
+ * Author: Serge Schneider
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#include <linux/module.h>
+
+#include <linux/mfd/rpisense/joystick.h>
+#include <linux/mfd/rpisense/core.h>
+
+static struct rpisense *rpisense;
+static unsigned char keymap[5] = {KEY_DOWN, KEY_RIGHT, KEY_UP, KEY_ENTER, KEY_LEFT,};
+
+static void keys_work_fn(struct work_struct *work)
+{
+ int i;
+ static s32 prev_keys;
+ struct rpisense_js *rpisense_js = &rpisense->joystick;
+ s32 keys = rpisense_reg_read(rpisense, RPISENSE_KEYS);
+ s32 changes = keys ^ prev_keys;
+
+ prev_keys = keys;
+ for (i = 0; i < 5; i++) {
+ if (changes & 1) {
+ input_report_key(rpisense_js->keys_dev,
+ keymap[i], keys & 1);
+ }
+ changes >>= 1;
+ keys >>= 1;
+ }
+ input_sync(rpisense_js->keys_dev);
+}
+
+static irqreturn_t keys_irq_handler(int irq, void *pdev)
+{
+ struct rpisense_js *rpisense_js = &rpisense->joystick;
+
+ schedule_work(&rpisense_js->keys_work_s);
+ return IRQ_HANDLED;
+}
+
+static int rpisense_js_probe(struct platform_device *pdev)
+{
+ int ret;
+ int i;
+ struct rpisense_js *rpisense_js;
+
+ rpisense = rpisense_get_dev();
+ rpisense_js = &rpisense->joystick;
+
+ INIT_WORK(&rpisense_js->keys_work_s, keys_work_fn);
+
+ rpisense_js->keys_dev = input_allocate_device();
+ if (!rpisense_js->keys_dev) {
+ dev_err(&pdev->dev, "Could not allocate input device.\n");
+ return -ENOMEM;
+ }
+
+ rpisense_js->keys_dev->evbit[0] = BIT_MASK(EV_KEY);
+ for (i = 0; i < ARRAY_SIZE(keymap); i++) {
+ set_bit(keymap[i],
+ rpisense_js->keys_dev->keybit);
+ }
+
+ rpisense_js->keys_dev->name = "Raspberry Pi Sense HAT Joystick";
+ rpisense_js->keys_dev->phys = "rpi-sense-joy/input0";
+ rpisense_js->keys_dev->id.bustype = BUS_I2C;
+ rpisense_js->keys_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
+ rpisense_js->keys_dev->keycode = keymap;
+ rpisense_js->keys_dev->keycodesize = sizeof(unsigned char);
+ rpisense_js->keys_dev->keycodemax = ARRAY_SIZE(keymap);
+
+ ret = input_register_device(rpisense_js->keys_dev);
+ if (ret) {
+ dev_err(&pdev->dev, "Could not register input device.\n");
+ goto err_keys_alloc;
+ }
+
+ ret = gpiod_direction_input(rpisense_js->keys_desc);
+ if (ret) {
+ dev_err(&pdev->dev, "Could not set keys-int direction.\n");
+ goto err_keys_reg;
+ }
+
+ rpisense_js->keys_irq = gpiod_to_irq(rpisense_js->keys_desc);
+ if (rpisense_js->keys_irq < 0) {
+ dev_err(&pdev->dev, "Could not determine keys-int IRQ.\n");
+ ret = rpisense_js->keys_irq;
+ goto err_keys_reg;
+ }
+
+ ret = devm_request_irq(&pdev->dev, rpisense_js->keys_irq,
+ keys_irq_handler, IRQF_TRIGGER_RISING,
+ "keys", &pdev->dev);
+ if (ret) {
+ dev_err(&pdev->dev, "IRQ request failed.\n");
+ goto err_keys_reg;
+ }
+ return 0;
+err_keys_reg:
+ input_unregister_device(rpisense_js->keys_dev);
+err_keys_alloc:
+ input_free_device(rpisense_js->keys_dev);
+ return ret;
+}
+
+static int rpisense_js_remove(struct platform_device *pdev)
+{
+ struct rpisense_js *rpisense_js = &rpisense->joystick;
+
+ input_unregister_device(rpisense_js->keys_dev);
+ input_free_device(rpisense_js->keys_dev);
+ return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id rpisense_js_id[] = {
+ { .compatible = "rpi,rpi-sense-js" },
+ { },
+};
+MODULE_DEVICE_TABLE(of, rpisense_js_id);
+#endif
+
+static struct platform_device_id rpisense_js_device_id[] = {
+ { .name = "rpi-sense-js" },
+ { },
+};
+MODULE_DEVICE_TABLE(platform, rpisense_js_device_id);
+
+static struct platform_driver rpisense_js_driver = {
+ .probe = rpisense_js_probe,
+ .remove = rpisense_js_remove,
+ .driver = {
+ .name = "rpi-sense-js",
+ .owner = THIS_MODULE,
+ },
+};
+
+module_platform_driver(rpisense_js_driver);
+
+MODULE_DESCRIPTION("Raspberry Pi Sense HAT joystick driver");
+MODULE_AUTHOR("Serge Schneider <serge@raspberrypi.org>");
+MODULE_LICENSE("GPL");
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -10,6 +10,14 @@ config MFD_CORE
select IRQ_DOMAIN
default n
+config MFD_RPISENSE_CORE
+ tristate "Raspberry Pi Sense HAT core functions"
+ depends on I2C
+ select MFD_CORE
+ help
+ This is the core driver for the Raspberry Pi Sense HAT. This provides
+ the necessary functions to communicate with the hardware.
+
config MFD_CS5535
tristate "AMD CS5535 and CS5536 southbridge core functions"
select MFD_CORE
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -211,3 +211,4 @@ obj-$(CONFIG_INTEL_SOC_PMIC) += intel-so
obj-$(CONFIG_MFD_MT6397) += mt6397-core.o
obj-$(CONFIG_MFD_ALTERA_A10SR) += altera-a10sr.o
+obj-$(CONFIG_MFD_RPISENSE_CORE) += rpisense-core.o
--- /dev/null
+++ b/drivers/mfd/rpisense-core.c
@@ -0,0 +1,157 @@
+/*
+ * Raspberry Pi Sense HAT core driver
+ * http://raspberrypi.org
+ *
+ * Copyright (C) 2015 Raspberry Pi
+ *
+ * Author: Serge Schneider
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This driver is based on wm8350 implementation.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/rpisense/core.h>
+#include <linux/slab.h>
+
+static struct rpisense *rpisense;
+
+static void rpisense_client_dev_register(struct rpisense *rpisense,
+ const char *name,
+ struct platform_device **pdev)
+{
+ int ret;
+
+ *pdev = platform_device_alloc(name, -1);
+ if (*pdev == NULL) {
+ dev_err(rpisense->dev, "Failed to allocate %s\n", name);
+ return;
+ }
+
+ (*pdev)->dev.parent = rpisense->dev;
+ platform_set_drvdata(*pdev, rpisense);
+ ret = platform_device_add(*pdev);
+ if (ret != 0) {
+ dev_err(rpisense->dev, "Failed to register %s: %d\n",
+ name, ret);
+ platform_device_put(*pdev);
+ *pdev = NULL;
+ }
+}
+
+static int rpisense_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ int ret;
+ struct rpisense_js *rpisense_js;
+
+ rpisense = devm_kzalloc(&i2c->dev, sizeof(struct rpisense), GFP_KERNEL);
+ if (rpisense == NULL)
+ return -ENOMEM;
+
+ i2c_set_clientdata(i2c, rpisense);
+ rpisense->dev = &i2c->dev;
+ rpisense->i2c_client = i2c;
+
+ ret = rpisense_reg_read(rpisense, RPISENSE_WAI);
+ if (ret > 0) {
+ if (ret != 's')
+ return -EINVAL;
+ } else {
+ return ret;
+ }
+ ret = rpisense_reg_read(rpisense, RPISENSE_VER);
+ if (ret < 0)
+ return ret;
+
+ dev_info(rpisense->dev,
+ "Raspberry Pi Sense HAT firmware version %i\n", ret);
+
+ rpisense_js = &rpisense->joystick;
+ rpisense_js->keys_desc = devm_gpiod_get(&i2c->dev,
+ "keys-int", GPIOD_IN);
+ if (IS_ERR(rpisense_js->keys_desc)) {
+ dev_warn(&i2c->dev, "Failed to get keys-int descriptor.\n");
+ rpisense_js->keys_desc = gpio_to_desc(23);
+ if (rpisense_js->keys_desc == NULL) {
+ dev_err(&i2c->dev, "GPIO23 fallback failed.\n");
+ return PTR_ERR(rpisense_js->keys_desc);
+ }
+ }
+ rpisense_client_dev_register(rpisense, "rpi-sense-js",
+ &(rpisense->joystick.pdev));
+ rpisense_client_dev_register(rpisense, "rpi-sense-fb",
+ &(rpisense->framebuffer.pdev));
+
+ return 0;
+}
+
+static int rpisense_remove(struct i2c_client *i2c)
+{
+ struct rpisense *rpisense = i2c_get_clientdata(i2c);
+
+ platform_device_unregister(rpisense->joystick.pdev);
+ return 0;
+}
+
+struct rpisense *rpisense_get_dev(void)
+{
+ return rpisense;
+}
+EXPORT_SYMBOL_GPL(rpisense_get_dev);
+
+s32 rpisense_reg_read(struct rpisense *rpisense, int reg)
+{
+ int ret = i2c_smbus_read_byte_data(rpisense->i2c_client, reg);
+
+ if (ret < 0)
+ dev_err(rpisense->dev, "Read from reg %d failed\n", reg);
+ /* Due to the BCM270x I2C clock stretching bug, some values
+ * may have MSB set. Clear it to avoid incorrect values.
+ * */
+ return ret & 0x7F;
+}
+EXPORT_SYMBOL_GPL(rpisense_reg_read);
+
+int rpisense_block_write(struct rpisense *rpisense, const char *buf, int count)
+{
+ int ret = i2c_master_send(rpisense->i2c_client, buf, count);
+
+ if (ret < 0)
+ dev_err(rpisense->dev, "Block write failed\n");
+ return ret;
+}
+EXPORT_SYMBOL_GPL(rpisense_block_write);
+
+static const struct i2c_device_id rpisense_i2c_id[] = {
+ { "rpi-sense", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, rpisense_i2c_id);
+
+
+static struct i2c_driver rpisense_driver = {
+ .driver = {
+ .name = "rpi-sense",
+ .owner = THIS_MODULE,
+ },
+ .probe = rpisense_probe,
+ .remove = rpisense_remove,
+ .id_table = rpisense_i2c_id,
+};
+
+module_i2c_driver(rpisense_driver);
+
+MODULE_DESCRIPTION("Raspberry Pi Sense HAT core driver");
+MODULE_AUTHOR("Serge Schneider <serge@raspberrypi.org>");
+MODULE_LICENSE("GPL");
+
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -2504,3 +2504,16 @@ config FB_SM712
This driver is also available as a module. The module will be
called sm712fb. If you want to compile it as a module, say M
here and read <file:Documentation/kbuild/modules.txt>.
+
+config FB_RPISENSE
+ tristate "Raspberry Pi Sense HAT framebuffer"
+ depends on FB
+ select MFD_RPISENSE_CORE
+ select FB_SYS_FOPS
+ select FB_SYS_FILLRECT
+ select FB_SYS_COPYAREA
+ select FB_SYS_IMAGEBLIT
+ select FB_DEFERRED_IO
+
+ help
+ This is the framebuffer driver for the Raspberry Pi Sense HAT
--- a/drivers/video/fbdev/Makefile
+++ b/drivers/video/fbdev/Makefile
@@ -147,6 +147,7 @@ obj-$(CONFIG_FB_DA8XX) += da8xx-fb.o
obj-$(CONFIG_FB_MXS) += mxsfb.o
obj-$(CONFIG_FB_SSD1307) += ssd1307fb.o
obj-$(CONFIG_FB_SIMPLE) += simplefb.o
+obj-$(CONFIG_FB_RPISENSE) += rpisense-fb.o
# the test framebuffer is last
obj-$(CONFIG_FB_VIRTUAL) += vfb.o
--- /dev/null
+++ b/drivers/video/fbdev/rpisense-fb.c
@@ -0,0 +1,293 @@
+/*
+ * Raspberry Pi Sense HAT framebuffer driver
+ * http://raspberrypi.org
+ *
+ * Copyright (C) 2015 Raspberry Pi
+ *
+ * Author: Serge Schneider
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/uaccess.h>
+#include <linux/delay.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+
+#include <linux/mfd/rpisense/framebuffer.h>
+#include <linux/mfd/rpisense/core.h>
+
+static bool lowlight;
+module_param(lowlight, bool, 0);
+MODULE_PARM_DESC(lowlight, "Reduce LED matrix brightness to one third");
+
+static struct rpisense *rpisense;
+
+struct rpisense_fb_param {
+ char __iomem *vmem;
+ u8 *vmem_work;
+ u32 vmemsize;
+ u8 *gamma;
+};
+
+static u8 gamma_default[32] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
+ 0x02, 0x02, 0x03, 0x03, 0x04, 0x05, 0x06, 0x07,
+ 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0E, 0x0F, 0x11,
+ 0x12, 0x14, 0x15, 0x17, 0x19, 0x1B, 0x1D, 0x1F,};
+
+static u8 gamma_low[32] = {0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02,
+ 0x03, 0x03, 0x03, 0x04, 0x04, 0x05, 0x05, 0x06,
+ 0x06, 0x07, 0x07, 0x08, 0x08, 0x09, 0x0A, 0x0A,};
+
+static u8 gamma_user[32];
+
+static struct rpisense_fb_param rpisense_fb_param = {
+ .vmem = NULL,
+ .vmemsize = 128,
+ .gamma = gamma_default,
+};
+
+static struct fb_deferred_io rpisense_fb_defio;
+
+static struct fb_fix_screeninfo rpisense_fb_fix = {
+ .id = "RPi-Sense FB",
+ .type = FB_TYPE_PACKED_PIXELS,
+ .visual = FB_VISUAL_TRUECOLOR,
+ .xpanstep = 0,
+ .ypanstep = 0,
+ .ywrapstep = 0,
+ .accel = FB_ACCEL_NONE,
+ .line_length = 16,
+};
+
+static struct fb_var_screeninfo rpisense_fb_var = {
+ .xres = 8,
+ .yres = 8,
+ .xres_virtual = 8,
+ .yres_virtual = 8,
+ .bits_per_pixel = 16,
+ .red = {11, 5, 0},
+ .green = {5, 6, 0},
+ .blue = {0, 5, 0},
+};
+
+static ssize_t rpisense_fb_write(struct fb_info *info,
+ const char __user *buf, size_t count,
+ loff_t *ppos)
+{
+ ssize_t res = fb_sys_write(info, buf, count, ppos);
+
+ schedule_delayed_work(&info->deferred_work, rpisense_fb_defio.delay);
+ return res;
+}
+
+static void rpisense_fb_fillrect(struct fb_info *info,
+ const struct fb_fillrect *rect)
+{
+ sys_fillrect(info, rect);
+ schedule_delayed_work(&info->deferred_work, rpisense_fb_defio.delay);
+}
+
+static void rpisense_fb_copyarea(struct fb_info *info,
+ const struct fb_copyarea *area)
+{
+ sys_copyarea(info, area);
+ schedule_delayed_work(&info->deferred_work, rpisense_fb_defio.delay);
+}
+
+static void rpisense_fb_imageblit(struct fb_info *info,
+ const struct fb_image *image)
+{
+ sys_imageblit(info, image);
+ schedule_delayed_work(&info->deferred_work, rpisense_fb_defio.delay);
+}
+
+static void rpisense_fb_deferred_io(struct fb_info *info,
+ struct list_head *pagelist)
+{
+ int i;
+ int j;
+ u8 *vmem_work = rpisense_fb_param.vmem_work;
+ u16 *mem = (u16 *)rpisense_fb_param.vmem;
+ u8 *gamma = rpisense_fb_param.gamma;
+
+ vmem_work[0] = 0;
+ for (j = 0; j < 8; j++) {
+ for (i = 0; i < 8; i++) {
+ vmem_work[(j * 24) + i + 1] =
+ gamma[(mem[(j * 8) + i] >> 11) & 0x1F];
+ vmem_work[(j * 24) + (i + 8) + 1] =
+ gamma[(mem[(j * 8) + i] >> 6) & 0x1F];
+ vmem_work[(j * 24) + (i + 16) + 1] =
+ gamma[(mem[(j * 8) + i]) & 0x1F];
+ }
+ }
+ rpisense_block_write(rpisense, vmem_work, 193);
+}
+
+static struct fb_deferred_io rpisense_fb_defio = {
+ .delay = HZ/100,
+ .deferred_io = rpisense_fb_deferred_io,
+};
+
+static int rpisense_fb_ioctl(struct fb_info *info, unsigned int cmd,
+ unsigned long arg)
+{
+ switch (cmd) {
+ case SENSEFB_FBIOGET_GAMMA:
+ if (copy_to_user((void __user *) arg, rpisense_fb_param.gamma,
+ sizeof(u8[32])))
+ return -EFAULT;
+ return 0;
+ case SENSEFB_FBIOSET_GAMMA:
+ if (copy_from_user(gamma_user, (void __user *)arg,
+ sizeof(u8[32])))
+ return -EFAULT;
+ rpisense_fb_param.gamma = gamma_user;
+ schedule_delayed_work(&info->deferred_work,
+ rpisense_fb_defio.delay);
+ return 0;
+ case SENSEFB_FBIORESET_GAMMA:
+ switch (arg) {
+ case 0:
+ rpisense_fb_param.gamma = gamma_default;
+ break;
+ case 1:
+ rpisense_fb_param.gamma = gamma_low;
+ break;
+ case 2:
+ rpisense_fb_param.gamma = gamma_user;
+ break;
+ default:
+ return -EINVAL;
+ }
+ schedule_delayed_work(&info->deferred_work,
+ rpisense_fb_defio.delay);
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static struct fb_ops rpisense_fb_ops = {
+ .owner = THIS_MODULE,
+ .fb_read = fb_sys_read,
+ .fb_write = rpisense_fb_write,
+ .fb_fillrect = rpisense_fb_fillrect,
+ .fb_copyarea = rpisense_fb_copyarea,
+ .fb_imageblit = rpisense_fb_imageblit,
+ .fb_ioctl = rpisense_fb_ioctl,
+};
+
+static int rpisense_fb_probe(struct platform_device *pdev)
+{
+ struct fb_info *info;
+ int ret = -ENOMEM;
+ struct rpisense_fb *rpisense_fb;
+
+ rpisense = rpisense_get_dev();
+ rpisense_fb = &rpisense->framebuffer;
+
+ rpisense_fb_param.vmem = vzalloc(rpisense_fb_param.vmemsize);
+ if (!rpisense_fb_param.vmem)
+ return ret;
+
+ rpisense_fb_param.vmem_work = devm_kmalloc(&pdev->dev, 193, GFP_KERNEL);
+ if (!rpisense_fb_param.vmem_work)
+ goto err_malloc;
+
+ info = framebuffer_alloc(0, &pdev->dev);
+ if (!info) {
+ dev_err(&pdev->dev, "Could not allocate framebuffer.\n");
+ goto err_malloc;
+ }
+ rpisense_fb->info = info;
+
+ rpisense_fb_fix.smem_start = (unsigned long)rpisense_fb_param.vmem;
+ rpisense_fb_fix.smem_len = rpisense_fb_param.vmemsize;
+
+ info->fbops = &rpisense_fb_ops;
+ info->fix = rpisense_fb_fix;
+ info->var = rpisense_fb_var;
+ info->fbdefio = &rpisense_fb_defio;
+ info->flags = FBINFO_FLAG_DEFAULT | FBINFO_VIRTFB;
+ info->screen_base = rpisense_fb_param.vmem;
+ info->screen_size = rpisense_fb_param.vmemsize;
+
+ if (lowlight)
+ rpisense_fb_param.gamma = gamma_low;
+
+ fb_deferred_io_init(info);
+
+ ret = register_framebuffer(info);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Could not register framebuffer.\n");
+ goto err_fballoc;
+ }
+
+ fb_info(info, "%s frame buffer device\n", info->fix.id);
+ schedule_delayed_work(&info->deferred_work, rpisense_fb_defio.delay);
+ return 0;
+err_fballoc:
+ framebuffer_release(info);
+err_malloc:
+ vfree(rpisense_fb_param.vmem);
+ return ret;
+}
+
+static int rpisense_fb_remove(struct platform_device *pdev)
+{
+ struct rpisense_fb *rpisense_fb = &rpisense->framebuffer;
+ struct fb_info *info = rpisense_fb->info;
+
+ if (info) {
+ unregister_framebuffer(info);
+ fb_deferred_io_cleanup(info);
+ framebuffer_release(info);
+ vfree(rpisense_fb_param.vmem);
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id rpisense_fb_id[] = {
+ { .compatible = "rpi,rpi-sense-fb" },
+ { },
+};
+MODULE_DEVICE_TABLE(of, rpisense_fb_id);
+#endif
+
+static struct platform_device_id rpisense_fb_device_id[] = {
+ { .name = "rpi-sense-fb" },
+ { },
+};
+MODULE_DEVICE_TABLE(platform, rpisense_fb_device_id);
+
+static struct platform_driver rpisense_fb_driver = {
+ .probe = rpisense_fb_probe,
+ .remove = rpisense_fb_remove,
+ .driver = {
+ .name = "rpi-sense-fb",
+ .owner = THIS_MODULE,
+ },
+};
+
+module_platform_driver(rpisense_fb_driver);
+
+MODULE_DESCRIPTION("Raspberry Pi Sense HAT framebuffer driver");
+MODULE_AUTHOR("Serge Schneider <serge@raspberrypi.org>");
+MODULE_LICENSE("GPL");
+
--- /dev/null
+++ b/include/linux/mfd/rpisense/core.h
@@ -0,0 +1,47 @@
+/*
+ * Raspberry Pi Sense HAT core driver
+ * http://raspberrypi.org
+ *
+ * Copyright (C) 2015 Raspberry Pi
+ *
+ * Author: Serge Schneider
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#ifndef __LINUX_MFD_RPISENSE_CORE_H_
+#define __LINUX_MFD_RPISENSE_CORE_H_
+
+#include <linux/mfd/rpisense/joystick.h>
+#include <linux/mfd/rpisense/framebuffer.h>
+
+/*
+ * Register values.
+ */
+#define RPISENSE_FB 0x00
+#define RPISENSE_WAI 0xF0
+#define RPISENSE_VER 0xF1
+#define RPISENSE_KEYS 0xF2
+#define RPISENSE_EE_WP 0xF3
+
+#define RPISENSE_ID 's'
+
+struct rpisense {
+ struct device *dev;
+ struct i2c_client *i2c_client;
+
+ /* Client devices */
+ struct rpisense_js joystick;
+ struct rpisense_fb framebuffer;
+};
+
+struct rpisense *rpisense_get_dev(void);
+s32 rpisense_reg_read(struct rpisense *rpisense, int reg);
+int rpisense_reg_write(struct rpisense *rpisense, int reg, u16 val);
+int rpisense_block_write(struct rpisense *rpisense, const char *buf, int count);
+
+#endif
--- /dev/null
+++ b/include/linux/mfd/rpisense/framebuffer.h
@@ -0,0 +1,32 @@
+/*
+ * Raspberry Pi Sense HAT framebuffer driver
+ * http://raspberrypi.org
+ *
+ * Copyright (C) 2015 Raspberry Pi
+ *
+ * Author: Serge Schneider
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#ifndef __LINUX_RPISENSE_FB_H_
+#define __LINUX_RPISENSE_FB_H_
+
+#define SENSEFB_FBIO_IOC_MAGIC 0xF1
+
+#define SENSEFB_FBIOGET_GAMMA _IO(SENSEFB_FBIO_IOC_MAGIC, 0)
+#define SENSEFB_FBIOSET_GAMMA _IO(SENSEFB_FBIO_IOC_MAGIC, 1)
+#define SENSEFB_FBIORESET_GAMMA _IO(SENSEFB_FBIO_IOC_MAGIC, 2)
+
+struct rpisense;
+
+struct rpisense_fb {
+ struct platform_device *pdev;
+ struct fb_info *info;
+};
+
+#endif
--- /dev/null
+++ b/include/linux/mfd/rpisense/joystick.h
@@ -0,0 +1,35 @@
+/*
+ * Raspberry Pi Sense HAT joystick driver
+ * http://raspberrypi.org
+ *
+ * Copyright (C) 2015 Raspberry Pi
+ *
+ * Author: Serge Schneider
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#ifndef __LINUX_RPISENSE_JOYSTICK_H_
+#define __LINUX_RPISENSE_JOYSTICK_H_
+
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/gpio/consumer.h>
+#include <linux/platform_device.h>
+
+struct rpisense;
+
+struct rpisense_js {
+ struct platform_device *pdev;
+ struct input_dev *keys_dev;
+ struct gpio_desc *keys_desc;
+ struct work_struct keys_work_s;
+ int keys_irq;
+};
+
+
+#endif

170
target/linux/brcm2708/patches-4.9/0066-ASoC-Add-support-for-HifiBerry-DAC.patch Normal file
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@ -0,0 +1,170 @@
From c9f07d6d39019ae80e97e0d1cf070a78c4a6c974 Mon Sep 17 00:00:00 2001
From: Florian Meier <florian.meier@koalo.de>
Date: Fri, 22 Nov 2013 19:19:08 +0100
Subject: [PATCH] ASoC: Add support for HifiBerry DAC
This adds a machine driver for the HifiBerry DAC.
It is a sound card that can
be stacked onto the Raspberry Pi.
Signed-off-by: Florian Meier <florian.meier@koalo.de>
---
sound/soc/bcm/Kconfig | 9 ++-
sound/soc/bcm/Makefile | 4 ++
sound/soc/bcm/hifiberry_dac.c | 124 ++++++++++++++++++++++++++++++++++++++++++
3 files changed, 136 insertions(+), 1 deletion(-)
create mode 100644 sound/soc/bcm/hifiberry_dac.c
--- a/sound/soc/bcm/Kconfig
+++ b/sound/soc/bcm/Kconfig
@@ -15,4 +15,11 @@ config SND_SOC_CYGNUS
Say Y if you want to add support for ASoC audio on Broadcom
Cygnus chips (bcm958300, bcm958305, bcm911360)
- If you don't know what to do here, say N.
\ No newline at end of file
+ If you don't know what to do here, say N.
+
+config SND_BCM2708_SOC_HIFIBERRY_DAC
+ tristate "Support for HifiBerry DAC"
+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+ select SND_SOC_PCM5102A
+ help
+ Say Y or M if you want to add support for HifiBerry DAC.
--- a/sound/soc/bcm/Makefile
+++ b/sound/soc/bcm/Makefile
@@ -8,3 +8,7 @@ snd-soc-cygnus-objs := cygnus-pcm.o cygn
obj-$(CONFIG_SND_SOC_CYGNUS) += snd-soc-cygnus.o
+# BCM2708 Machine Support
+snd-soc-hifiberry-dac-objs := hifiberry_dac.o
+
+obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
--- /dev/null
+++ b/sound/soc/bcm/hifiberry_dac.c
@@ -0,0 +1,124 @@
+/*
+ * ASoC Driver for HifiBerry DAC
+ *
+ * Author: Florian Meier <florian.meier@koalo.de>
+ * Copyright 2013
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+
+static int snd_rpi_hifiberry_dac_init(struct snd_soc_pcm_runtime *rtd)
+{
+ return 0;
+}
+
+static int snd_rpi_hifiberry_dac_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+
+ unsigned int sample_bits =
+ snd_pcm_format_physical_width(params_format(params));
+
+ return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2);
+}
+
+/* machine stream operations */
+static struct snd_soc_ops snd_rpi_hifiberry_dac_ops = {
+ .hw_params = snd_rpi_hifiberry_dac_hw_params,
+};
+
+static struct snd_soc_dai_link snd_rpi_hifiberry_dac_dai[] = {
+{
+ .name = "HifiBerry DAC",
+ .stream_name = "HifiBerry DAC HiFi",
+ .cpu_dai_name = "bcm2708-i2s.0",
+ .codec_dai_name = "pcm5102a-hifi",
+ .platform_name = "bcm2708-i2s.0",
+ .codec_name = "pcm5102a-codec",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS,
+ .ops = &snd_rpi_hifiberry_dac_ops,
+ .init = snd_rpi_hifiberry_dac_init,
+},
+};
+
+/* audio machine driver */
+static struct snd_soc_card snd_rpi_hifiberry_dac = {
+ .name = "snd_rpi_hifiberry_dac",
+ .driver_name = "HifiberryDac",
+ .owner = THIS_MODULE,
+ .dai_link = snd_rpi_hifiberry_dac_dai,
+ .num_links = ARRAY_SIZE(snd_rpi_hifiberry_dac_dai),
+};
+
+static int snd_rpi_hifiberry_dac_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+
+ snd_rpi_hifiberry_dac.dev = &pdev->dev;
+
+ if (pdev->dev.of_node) {
+ struct device_node *i2s_node;
+ struct snd_soc_dai_link *dai = &snd_rpi_hifiberry_dac_dai[0];
+ i2s_node = of_parse_phandle(pdev->dev.of_node,
+ "i2s-controller", 0);
+
+ if (i2s_node) {
+ dai->cpu_dai_name = NULL;
+ dai->cpu_of_node = i2s_node;
+ dai->platform_name = NULL;
+ dai->platform_of_node = i2s_node;
+ }
+ }
+
+ ret = snd_soc_register_card(&snd_rpi_hifiberry_dac);
+ if (ret)
+ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret);
+
+ return ret;
+}
+
+static int snd_rpi_hifiberry_dac_remove(struct platform_device *pdev)
+{
+ return snd_soc_unregister_card(&snd_rpi_hifiberry_dac);
+}
+
+static const struct of_device_id snd_rpi_hifiberry_dac_of_match[] = {
+ { .compatible = "hifiberry,hifiberry-dac", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, snd_rpi_hifiberry_dac_of_match);
+
+static struct platform_driver snd_rpi_hifiberry_dac_driver = {
+ .driver = {
+ .name = "snd-hifiberry-dac",
+ .owner = THIS_MODULE,
+ .of_match_table = snd_rpi_hifiberry_dac_of_match,
+ },
+ .probe = snd_rpi_hifiberry_dac_probe,
+ .remove = snd_rpi_hifiberry_dac_remove,
+};
+
+module_platform_driver(snd_rpi_hifiberry_dac_driver);
+
+MODULE_AUTHOR("Florian Meier <florian.meier@koalo.de>");
+MODULE_DESCRIPTION("ASoC Driver for HifiBerry DAC");
+MODULE_LICENSE("GPL v2");

272
target/linux/brcm2708/patches-4.9/0067-ASoC-Add-support-for-Rpi-DAC.patch Normal file
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@ -0,0 +1,272 @@
From fd63dade0da2751e1b4d38a7bc1f70611bf85e31 Mon Sep 17 00:00:00 2001
From: Florian Meier <florian.meier@koalo.de>
Date: Mon, 25 Jan 2016 15:48:59 +0000
Subject: [PATCH] ASoC: Add support for Rpi-DAC
---
sound/soc/bcm/Kconfig | 7 +++
sound/soc/bcm/Makefile | 2 +
sound/soc/bcm/rpi-dac.c | 119 ++++++++++++++++++++++++++++++++++++++++++++
sound/soc/codecs/Kconfig | 5 ++
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/pcm1794a.c | 69 +++++++++++++++++++++++++
6 files changed, 204 insertions(+)
create mode 100644 sound/soc/bcm/rpi-dac.c
create mode 100644 sound/soc/codecs/pcm1794a.c
--- a/sound/soc/bcm/Kconfig
+++ b/sound/soc/bcm/Kconfig
@@ -23,3 +23,10 @@ config SND_BCM2708_SOC_HIFIBERRY_DAC
select SND_SOC_PCM5102A
help
Say Y or M if you want to add support for HifiBerry DAC.
+
+config SND_BCM2708_SOC_RPI_DAC
+ tristate "Support for RPi-DAC"
+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+ select SND_SOC_PCM1794A
+ help
+ Say Y or M if you want to add support for RPi-DAC.
--- a/sound/soc/bcm/Makefile
+++ b/sound/soc/bcm/Makefile
@@ -10,5 +10,7 @@ obj-$(CONFIG_SND_SOC_CYGNUS) += snd-soc-
# BCM2708 Machine Support
snd-soc-hifiberry-dac-objs := hifiberry_dac.o
+snd-soc-rpi-dac-objs := rpi-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
+obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
--- /dev/null
+++ b/sound/soc/bcm/rpi-dac.c
@@ -0,0 +1,119 @@
+/*
+ * ASoC Driver for RPi-DAC.
+ *
+ * Author: Florian Meier <florian.meier@koalo.de>
+ * Copyright 2013
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+
+static int snd_rpi_rpi_dac_init(struct snd_soc_pcm_runtime *rtd)
+{
+ return 0;
+}
+
+static int snd_rpi_rpi_dac_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+
+ return snd_soc_dai_set_bclk_ratio(cpu_dai, 32*2);
+}
+
+/* machine stream operations */
+static struct snd_soc_ops snd_rpi_rpi_dac_ops = {
+ .hw_params = snd_rpi_rpi_dac_hw_params,
+};
+
+static struct snd_soc_dai_link snd_rpi_rpi_dac_dai[] = {
+{
+ .name = "RPi-DAC",
+ .stream_name = "RPi-DAC HiFi",
+ .cpu_dai_name = "bcm2708-i2s.0",
+ .codec_dai_name = "pcm1794a-hifi",
+ .platform_name = "bcm2708-i2s.0",
+ .codec_name = "pcm1794a-codec",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS,
+ .ops = &snd_rpi_rpi_dac_ops,
+ .init = snd_rpi_rpi_dac_init,
+},
+};
+
+/* audio machine driver */
+static struct snd_soc_card snd_rpi_rpi_dac = {
+ .name = "snd_rpi_rpi_dac",
+ .owner = THIS_MODULE,
+ .dai_link = snd_rpi_rpi_dac_dai,
+ .num_links = ARRAY_SIZE(snd_rpi_rpi_dac_dai),
+};
+
+static int snd_rpi_rpi_dac_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+
+ snd_rpi_rpi_dac.dev = &pdev->dev;
+
+ if (pdev->dev.of_node) {
+ struct device_node *i2s_node;
+ struct snd_soc_dai_link *dai = &snd_rpi_rpi_dac_dai[0];
+ i2s_node = of_parse_phandle(pdev->dev.of_node, "i2s-controller", 0);
+
+ if (i2s_node) {
+ dai->cpu_dai_name = NULL;
+ dai->cpu_of_node = i2s_node;
+ dai->platform_name = NULL;
+ dai->platform_of_node = i2s_node;
+ }
+ }
+
+ ret = snd_soc_register_card(&snd_rpi_rpi_dac);
+ if (ret)
+ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret);
+
+ return ret;
+}
+
+static int snd_rpi_rpi_dac_remove(struct platform_device *pdev)
+{
+ return snd_soc_unregister_card(&snd_rpi_rpi_dac);
+}
+
+static const struct of_device_id snd_rpi_rpi_dac_of_match[] = {
+ { .compatible = "rpi,rpi-dac", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, snd_rpi_rpi_dac_of_match);
+
+static struct platform_driver snd_rpi_rpi_dac_driver = {
+ .driver = {
+ .name = "snd-rpi-dac",
+ .owner = THIS_MODULE,
+ .of_match_table = snd_rpi_rpi_dac_of_match,
+ },
+ .probe = snd_rpi_rpi_dac_probe,
+ .remove = snd_rpi_rpi_dac_remove,
+};
+
+module_platform_driver(snd_rpi_rpi_dac_driver);
+
+MODULE_AUTHOR("Florian Meier <florian.meier@koalo.de>");
+MODULE_DESCRIPTION("ASoC Driver for RPi-DAC");
+MODULE_LICENSE("GPL v2");
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -98,6 +98,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_PCM1681 if I2C
select SND_SOC_PCM179X_I2C if I2C
select SND_SOC_PCM179X_SPI if SPI_MASTER
+ select SND_SOC_PCM1794A if I2C
select SND_SOC_PCM3008
select SND_SOC_PCM3168A_I2C if I2C
select SND_SOC_PCM3168A_SPI if SPI_MASTER
@@ -689,6 +690,10 @@ config SND_SOC_RT5616
tristate "Realtek RT5616 CODEC"
depends on I2C
+config SND_SOC_PCM1794A
+ tristate
+ depends on I2C
+
config SND_SOC_RT5631
tristate "Realtek ALC5631/RT5631 CODEC"
depends on I2C
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -93,6 +93,7 @@ snd-soc-pcm1681-objs := pcm1681.o
snd-soc-pcm179x-codec-objs := pcm179x.o
snd-soc-pcm179x-i2c-objs := pcm179x-i2c.o
snd-soc-pcm179x-spi-objs := pcm179x-spi.o
+snd-soc-pcm1794a-objs := pcm1794a.o
snd-soc-pcm3008-objs := pcm3008.o
snd-soc-pcm3168a-objs := pcm3168a.o
snd-soc-pcm3168a-i2c-objs := pcm3168a-i2c.o
@@ -325,6 +326,7 @@ obj-$(CONFIG_SND_SOC_PCM5102A) += snd-so
obj-$(CONFIG_SND_SOC_PCM512x) += snd-soc-pcm512x.o
obj-$(CONFIG_SND_SOC_PCM512x_I2C) += snd-soc-pcm512x-i2c.o
obj-$(CONFIG_SND_SOC_PCM512x_SPI) += snd-soc-pcm512x-spi.o
+obj-$(CONFIG_SND_SOC_PCM1794A) += snd-soc-pcm1794a.o
obj-$(CONFIG_SND_SOC_RL6231) += snd-soc-rl6231.o
obj-$(CONFIG_SND_SOC_RL6347A) += snd-soc-rl6347a.o
obj-$(CONFIG_SND_SOC_RT286) += snd-soc-rt286.o
--- /dev/null
+++ b/sound/soc/codecs/pcm1794a.c
@@ -0,0 +1,69 @@
+/*
+ * Driver for the PCM1794A codec
+ *
+ * Author: Florian Meier <florian.meier@koalo.de>
+ * Copyright 2013
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/soc.h>
+
+static struct snd_soc_dai_driver pcm1794a_dai = {
+ .name = "pcm1794a-hifi",
+ .playback = {
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_S24_LE
+ },
+};
+
+static struct snd_soc_codec_driver soc_codec_dev_pcm1794a;
+
+static int pcm1794a_probe(struct platform_device *pdev)
+{
+ return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_pcm1794a,
+ &pcm1794a_dai, 1);
+}
+
+static int pcm1794a_remove(struct platform_device *pdev)
+{
+ snd_soc_unregister_codec(&pdev->dev);
+ return 0;
+}
+
+static const struct of_device_id pcm1794a_of_match[] = {
+ { .compatible = "ti,pcm1794a", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, pcm1794a_of_match);
+
+static struct platform_driver pcm1794a_codec_driver = {
+ .probe = pcm1794a_probe,
+ .remove = pcm1794a_remove,
+ .driver = {
+ .name = "pcm1794a-codec",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(pcm1794a_of_match),
+ },
+};
+
+module_platform_driver(pcm1794a_codec_driver);
+
+MODULE_DESCRIPTION("ASoC PCM1794A codec driver");
+MODULE_AUTHOR("Florian Meier <florian.meier@koalo.de>");
+MODULE_LICENSE("GPL v2");

49
target/linux/brcm2708/patches-4.9/0068-ASoC-wm8804-Implement-MCLK-configuration-options-add.patch Normal file
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@ -0,0 +1,49 @@
From c137d8fd4fd6a01ca8afc140cab7d7c3c39f3f33 Mon Sep 17 00:00:00 2001
From: Daniel Matuschek <info@crazy-audio.com>
Date: Wed, 15 Jan 2014 21:41:23 +0100
Subject: [PATCH] ASoC: wm8804: Implement MCLK configuration options, add 32bit
support WM8804 can run with PLL frequencies of 256xfs and 128xfs for most
sample rates. At 192kHz only 128xfs is supported. The existing driver selects
128xfs automatically for some lower samples rates. By using an additional
mclk_div divider, it is now possible to control the behaviour. This allows
using 256xfs PLL frequency on all sample rates up to 96kHz. It should allow
lower jitter and better signal quality. The behavior has to be controlled by
the sound card driver, because some sample frequency share the same setting.
e.g. 192kHz and 96kHz use 24.576MHz master clock. The only difference is the
MCLK divider.
This also added support for 32bit data.
Signed-off-by: Daniel Matuschek <daniel@matuschek.net>
---
sound/soc/codecs/wm8804.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/sound/soc/codecs/wm8804.c
+++ b/sound/soc/codecs/wm8804.c
@@ -304,6 +304,7 @@ static int wm8804_hw_params(struct snd_p
blen = 0x1;
break;
case 24:
+ case 32:
blen = 0x2;
break;
default:
@@ -515,7 +516,7 @@ static const struct snd_soc_dai_ops wm88
};
#define WM8804_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
- SNDRV_PCM_FMTBIT_S24_LE)
+ SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE)
#define WM8804_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_64000 | \
@@ -543,7 +544,7 @@ static struct snd_soc_dai_driver wm8804_
};
static const struct snd_soc_codec_driver soc_codec_dev_wm8804 = {
- .idle_bias_off = true,
+ .idle_bias_off = false,
.component_driver = {
.dapm_widgets = wm8804_dapm_widgets,

339
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@ -0,0 +1,339 @@
From 8a6178b707acd262871cb08791f8d9e7248a4107 Mon Sep 17 00:00:00 2001
From: Daniel Matuschek <info@crazy-audio.com>
Date: Wed, 15 Jan 2014 21:42:08 +0100
Subject: [PATCH] ASoC: BCM:Add support for HiFiBerry Digi. Driver is based on
the patched WM8804 driver.
Signed-off-by: Daniel Matuschek <daniel@matuschek.net>
Add a parameter to turn off SPDIF output if no audio is playing
This patch adds the paramater auto_shutdown_output to the kernel module.
Default behaviour of the module is the same, but when auto_shutdown_output
is set to 1, the SPDIF oputput will shutdown if no stream is playing.
bugfix for 32kHz sample rate, was missing
HiFiBerry Digi: set SPDIF status bits for sample rate
The HiFiBerry Digi driver did not signal the sample rate in the SPDIF status bits.
While this is optional, some DACs and receivers do not accept this signal. This patch
adds the sample rate bits in the SPDIF status block.
Added HiFiBerry Digi+ Pro driver
Signed-off-by: Daniel Matuschek <daniel@hifiberry.com>
---
sound/soc/bcm/Kconfig | 7 ++
sound/soc/bcm/Makefile | 2 +
sound/soc/bcm/hifiberry_digi.c | 276 +++++++++++++++++++++++++++++++++++++++++
3 files changed, 285 insertions(+)
create mode 100644 sound/soc/bcm/hifiberry_digi.c
--- a/sound/soc/bcm/Kconfig
+++ b/sound/soc/bcm/Kconfig
@@ -24,6 +24,13 @@ config SND_BCM2708_SOC_HIFIBERRY_DAC
help
Say Y or M if you want to add support for HifiBerry DAC.
+config SND_BCM2708_SOC_HIFIBERRY_DIGI
+ tristate "Support for HifiBerry Digi"
+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+ select SND_SOC_WM8804
+ help
+ Say Y or M if you want to add support for HifiBerry Digi S/PDIF output board.
+
config SND_BCM2708_SOC_RPI_DAC
tristate "Support for RPi-DAC"
depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
--- a/sound/soc/bcm/Makefile
+++ b/sound/soc/bcm/Makefile
@@ -10,7 +10,9 @@ obj-$(CONFIG_SND_SOC_CYGNUS) += snd-soc-
# BCM2708 Machine Support
snd-soc-hifiberry-dac-objs := hifiberry_dac.o
+snd-soc-hifiberry-digi-objs := hifiberry_digi.o
snd-soc-rpi-dac-objs := rpi-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
+obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) += snd-soc-hifiberry-digi.o
obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
--- /dev/null
+++ b/sound/soc/bcm/hifiberry_digi.c
@@ -0,0 +1,276 @@
+/*
+ * ASoC Driver for HifiBerry Digi
+ *
+ * Author: Daniel Matuschek <info@crazy-audio.com>
+ * based on the HifiBerry DAC driver by Florian Meier <florian.meier@koalo.de>
+ * Copyright 2013
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+#include <linux/gpio/consumer.h>
+
+#include "../codecs/wm8804.h"
+
+static short int auto_shutdown_output = 0;
+module_param(auto_shutdown_output, short, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
+MODULE_PARM_DESC(auto_shutdown_output, "Shutdown SP/DIF output if playback is stopped");
+
+#define CLK_44EN_RATE 22579200UL
+#define CLK_48EN_RATE 24576000UL
+
+static bool snd_rpi_hifiberry_is_digipro;
+static struct gpio_desc *snd_rpi_hifiberry_clk44gpio;
+static struct gpio_desc *snd_rpi_hifiberry_clk48gpio;
+
+static int samplerate=44100;
+
+static uint32_t snd_rpi_hifiberry_digi_enable_clock(int sample_rate)
+{
+ switch (sample_rate) {
+ case 11025:
+ case 22050:
+ case 44100:
+ case 88200:
+ case 176400:
+ gpiod_set_value_cansleep(snd_rpi_hifiberry_clk44gpio, 1);
+ gpiod_set_value_cansleep(snd_rpi_hifiberry_clk48gpio, 0);
+ return CLK_44EN_RATE;
+ default:
+ gpiod_set_value_cansleep(snd_rpi_hifiberry_clk48gpio, 1);
+ gpiod_set_value_cansleep(snd_rpi_hifiberry_clk44gpio, 0);
+ return CLK_48EN_RATE;
+ }
+}
+
+
+static int snd_rpi_hifiberry_digi_init(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_soc_codec *codec = rtd->codec;
+
+ /* enable TX output */
+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x0);
+
+ /* Initialize Digi+ Pro hardware */
+ if (snd_rpi_hifiberry_is_digipro) {
+ struct snd_soc_dai_link *dai = rtd->dai_link;
+
+ dai->name = "HiFiBerry Digi+ Pro";
+ dai->stream_name = "HiFiBerry Digi+ Pro HiFi";
+ }
+
+ return 0;
+}
+
+static int snd_rpi_hifiberry_digi_startup(struct snd_pcm_substream *substream) {
+ /* turn on digital output */
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_codec *codec = rtd->codec;
+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x3c, 0x00);
+ return 0;
+}
+
+static void snd_rpi_hifiberry_digi_shutdown(struct snd_pcm_substream *substream) {
+ /* turn off output */
+ if (auto_shutdown_output) {
+ /* turn off output */
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_codec *codec = rtd->codec;
+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x3c, 0x3c);
+ }
+}
+
+
+static int snd_rpi_hifiberry_digi_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
+ struct snd_soc_codec *codec = rtd->codec;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+
+ int sysclk = 27000000; /* This is fixed on this board */
+
+ long mclk_freq=0;
+ int mclk_div=1;
+ int sampling_freq=1;
+
+ int ret;
+
+ samplerate = params_rate(params);
+
+ if (samplerate<=96000) {
+ mclk_freq=samplerate*256;
+ mclk_div=WM8804_MCLKDIV_256FS;
+ } else {
+ mclk_freq=samplerate*128;
+ mclk_div=WM8804_MCLKDIV_128FS;
+ }
+
+ if (snd_rpi_hifiberry_is_digipro)
+ sysclk = snd_rpi_hifiberry_digi_enable_clock(samplerate);
+
+ switch (samplerate) {
+ case 32000:
+ sampling_freq=0x03;
+ break;
+ case 44100:
+ sampling_freq=0x00;
+ break;
+ case 48000:
+ sampling_freq=0x02;
+ break;
+ case 88200:
+ sampling_freq=0x08;
+ break;
+ case 96000:
+ sampling_freq=0x0a;
+ break;
+ case 176400:
+ sampling_freq=0x0c;
+ break;
+ case 192000:
+ sampling_freq=0x0e;
+ break;
+ default:
+ dev_err(codec->dev,
+ "Failed to set WM8804 SYSCLK, unsupported samplerate %d\n",
+ samplerate);
+ }
+
+ snd_soc_dai_set_clkdiv(codec_dai, WM8804_MCLK_DIV, mclk_div);
+ snd_soc_dai_set_pll(codec_dai, 0, 0, sysclk, mclk_freq);
+
+ ret = snd_soc_dai_set_sysclk(codec_dai, WM8804_TX_CLKSRC_PLL,
+ sysclk, SND_SOC_CLOCK_OUT);
+
+ if (ret < 0) {
+ dev_err(codec->dev,
+ "Failed to set WM8804 SYSCLK: %d\n", ret);
+ return ret;
+ }
+
+ /* Enable TX output */
+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x0);
+
+ /* Power on */
+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x9, 0);
+
+ /* set sampling frequency status bits */
+ snd_soc_update_bits(codec, WM8804_SPDTX4, 0x0f, sampling_freq);
+
+ return snd_soc_dai_set_bclk_ratio(cpu_dai,64);
+}
+
+/* machine stream operations */
+static struct snd_soc_ops snd_rpi_hifiberry_digi_ops = {
+ .hw_params = snd_rpi_hifiberry_digi_hw_params,
+ .startup = snd_rpi_hifiberry_digi_startup,
+ .shutdown = snd_rpi_hifiberry_digi_shutdown,
+};
+
+static struct snd_soc_dai_link snd_rpi_hifiberry_digi_dai[] = {
+{
+ .name = "HifiBerry Digi",
+ .stream_name = "HifiBerry Digi HiFi",
+ .cpu_dai_name = "bcm2708-i2s.0",
+ .codec_dai_name = "wm8804-spdif",
+ .platform_name = "bcm2708-i2s.0",
+ .codec_name = "wm8804.1-003b",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBM_CFM,
+ .ops = &snd_rpi_hifiberry_digi_ops,
+ .init = snd_rpi_hifiberry_digi_init,
+},
+};
+
+/* audio machine driver */
+static struct snd_soc_card snd_rpi_hifiberry_digi = {
+ .name = "snd_rpi_hifiberry_digi",
+ .driver_name = "HifiberryDigi",
+ .owner = THIS_MODULE,
+ .dai_link = snd_rpi_hifiberry_digi_dai,
+ .num_links = ARRAY_SIZE(snd_rpi_hifiberry_digi_dai),
+};
+
+static int snd_rpi_hifiberry_digi_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+
+ snd_rpi_hifiberry_digi.dev = &pdev->dev;
+
+ if (pdev->dev.of_node) {
+ struct device_node *i2s_node;
+ struct snd_soc_dai_link *dai = &snd_rpi_hifiberry_digi_dai[0];
+ i2s_node = of_parse_phandle(pdev->dev.of_node,
+ "i2s-controller", 0);
+
+ if (i2s_node) {
+ dai->cpu_dai_name = NULL;
+ dai->cpu_of_node = i2s_node;
+ dai->platform_name = NULL;
+ dai->platform_of_node = i2s_node;
+ }
+
+ snd_rpi_hifiberry_is_digipro = 1;
+
+ snd_rpi_hifiberry_clk44gpio =
+ devm_gpiod_get(&pdev->dev, "clock44", GPIOD_OUT_LOW);
+ if (IS_ERR(snd_rpi_hifiberry_clk44gpio))
+ snd_rpi_hifiberry_is_digipro = 0;
+
+ snd_rpi_hifiberry_clk48gpio =
+ devm_gpiod_get(&pdev->dev, "clock48", GPIOD_OUT_LOW);
+ if (IS_ERR(snd_rpi_hifiberry_clk48gpio))
+ snd_rpi_hifiberry_is_digipro = 0;
+
+ }
+
+ ret = snd_soc_register_card(&snd_rpi_hifiberry_digi);
+ if (ret)
+ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret);
+
+ return ret;
+}
+
+static int snd_rpi_hifiberry_digi_remove(struct platform_device *pdev)
+{
+ return snd_soc_unregister_card(&snd_rpi_hifiberry_digi);
+}
+
+static const struct of_device_id snd_rpi_hifiberry_digi_of_match[] = {
+ { .compatible = "hifiberry,hifiberry-digi", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, snd_rpi_hifiberry_digi_of_match);
+
+static struct platform_driver snd_rpi_hifiberry_digi_driver = {
+ .driver = {
+ .name = "snd-hifiberry-digi",
+ .owner = THIS_MODULE,
+ .of_match_table = snd_rpi_hifiberry_digi_of_match,
+ },
+ .probe = snd_rpi_hifiberry_digi_probe,
+ .remove = snd_rpi_hifiberry_digi_remove,
+};
+
+module_platform_driver(snd_rpi_hifiberry_digi_driver);
+
+MODULE_AUTHOR("Daniel Matuschek <info@crazy-audio.com>");
+MODULE_DESCRIPTION("ASoC Driver for HifiBerry Digi");
+MODULE_LICENSE("GPL v2");

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@ -0,0 +1,325 @@
From db63efa8452156b71aedb5aa1e77182d25bc6906 Mon Sep 17 00:00:00 2001
From: Gordon Garrity <gordon@iqaudio.com>
Date: Sat, 8 Mar 2014 16:56:57 +0000
Subject: [PATCH] Add IQaudIO Sound Card support for Raspberry Pi
Set a limit of 0dB on Digital Volume Control
The main volume control in the PCM512x DAC has a range up to
+24dB. This is dangerously loud and can potentially cause massive
clipping in the output stages. Therefore this sets a sensible
limit of 0dB for this control.
Allow up to 24dB digital gain to be applied when using IQAudIO DAC+
24db_digital_gain DT param can be used to specify that PCM512x
codec "Digital" volume control should not be limited to 0dB gain,
and if specified will allow the full 24dB gain.
Modify IQAudIO DAC+ ASoC driver to set card/dai config from dt
Add the ability to set the card name, dai name and dai stream name, from
dt config.
Signed-off-by: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk>
IQaudIO: auto-mute for AMP+ and DigiAMP+
IQAudIO amplifier mute via GPIO22. Add dt params for "one-shot" unmute
and auto mute.
Revision 2, auto mute implementing HiassofT suggestion to mute/unmute
using set_bias_level, rather than startup/shutdown....
"By default DAPM waits 5 seconds (pmdown_time) before shutting down
playback streams so a close/stop immediately followed by open/start
doesn't trigger an amp mute+unmute."
Tested on both AMP+ (via DAC+) and DigiAMP+, with both options...
dtoverlay=iqaudio-dacplus,unmute_amp
"one-shot" unmute when kernel module loads.
dtoverlay=iqaudio-dacplus,auto_mute_amp
Unmute amp when ALSA device opened by a client. Mute, with 5 second delay
when ALSA device closed. (Re-opening the device within the 5 second close
window, will cancel mute.)
Revision 4, using gpiod.
Revision 5, clean-up formatting before adding mute code.
- Convert tab plus 4 space formatting to 2x tab
- Remove '// NOT USED' commented code
Revision 6, don't attempt to "one-shot" unmute amp, unless card is
successfully registered.
Signed-off-by: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk>
---
sound/soc/bcm/Kconfig | 7 ++
sound/soc/bcm/Makefile | 2 +
sound/soc/bcm/iqaudio-dac.c | 234 ++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 243 insertions(+)
create mode 100644 sound/soc/bcm/iqaudio-dac.c
--- a/sound/soc/bcm/Kconfig
+++ b/sound/soc/bcm/Kconfig
@@ -37,3 +37,10 @@ config SND_BCM2708_SOC_RPI_DAC
select SND_SOC_PCM1794A
help
Say Y or M if you want to add support for RPi-DAC.
+
+config SND_BCM2708_SOC_IQAUDIO_DAC
+ tristate "Support for IQaudIO-DAC"
+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+ select SND_SOC_PCM512x_I2C
+ help
+ Say Y or M if you want to add support for IQaudIO-DAC.
--- a/sound/soc/bcm/Makefile
+++ b/sound/soc/bcm/Makefile
@@ -12,7 +12,9 @@ obj-$(CONFIG_SND_SOC_CYGNUS) += snd-soc-
snd-soc-hifiberry-dac-objs := hifiberry_dac.o
snd-soc-hifiberry-digi-objs := hifiberry_digi.o
snd-soc-rpi-dac-objs := rpi-dac.o
+snd-soc-iqaudio-dac-objs := iqaudio-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) += snd-soc-hifiberry-digi.o
obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
+obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
--- /dev/null
+++ b/sound/soc/bcm/iqaudio-dac.c
@@ -0,0 +1,234 @@
+/*
+ * ASoC Driver for IQaudIO DAC
+ *
+ * Author: Florian Meier <florian.meier@koalo.de>
+ * Copyright 2013
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/gpio/consumer.h>
+#include <linux/platform_device.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+
+static bool digital_gain_0db_limit = true;
+
+static struct gpio_desc *mute_gpio;
+
+static int snd_rpi_iqaudio_dac_init(struct snd_soc_pcm_runtime *rtd)
+{
+ if (digital_gain_0db_limit)
+ {
+ int ret;
+ struct snd_soc_card *card = rtd->card;
+
+ ret = snd_soc_limit_volume(card, "Digital Playback Volume", 207);
+ if (ret < 0)
+ dev_warn(card->dev, "Failed to set volume limit: %d\n", ret);
+ }
+
+ return 0;
+}
+
+static int snd_rpi_iqaudio_dac_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+
+ unsigned int sample_bits =
+ snd_pcm_format_physical_width(params_format(params));
+
+ return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2);
+}
+
+static void snd_rpi_iqaudio_gpio_mute(struct snd_soc_card *card)
+{
+ if (mute_gpio) {
+ dev_info(card->dev, "%s: muting amp using GPIO22\n",
+ __func__);
+ gpiod_set_value_cansleep(mute_gpio, 0);
+ }
+}
+
+static void snd_rpi_iqaudio_gpio_unmute(struct snd_soc_card *card)
+{
+ if (mute_gpio) {
+ dev_info(card->dev, "%s: un-muting amp using GPIO22\n",
+ __func__);
+ gpiod_set_value_cansleep(mute_gpio, 1);
+ }
+}
+
+static int snd_rpi_iqaudio_set_bias_level(struct snd_soc_card *card,
+ struct snd_soc_dapm_context *dapm, enum snd_soc_bias_level level)
+{
+ struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
+
+ if (dapm->dev != codec_dai->dev)
+ return 0;
+
+ switch (level) {
+ case SND_SOC_BIAS_PREPARE:
+ if (dapm->bias_level != SND_SOC_BIAS_STANDBY)
+ break;
+
+ /* UNMUTE AMP */
+ snd_rpi_iqaudio_gpio_unmute(card);
+
+ break;
+ case SND_SOC_BIAS_STANDBY:
+ if (dapm->bias_level != SND_SOC_BIAS_PREPARE)
+ break;
+
+ /* MUTE AMP */
+ snd_rpi_iqaudio_gpio_mute(card);
+
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+/* machine stream operations */
+static struct snd_soc_ops snd_rpi_iqaudio_dac_ops = {
+ .hw_params = snd_rpi_iqaudio_dac_hw_params,
+};
+
+static struct snd_soc_dai_link snd_rpi_iqaudio_dac_dai[] = {
+{
+ .cpu_dai_name = "bcm2708-i2s.0",
+ .codec_dai_name = "pcm512x-hifi",
+ .platform_name = "bcm2708-i2s.0",
+ .codec_name = "pcm512x.1-004c",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS,
+ .ops = &snd_rpi_iqaudio_dac_ops,
+ .init = snd_rpi_iqaudio_dac_init,
+},
+};
+
+/* audio machine driver */
+static struct snd_soc_card snd_rpi_iqaudio_dac = {
+ .owner = THIS_MODULE,
+ .dai_link = snd_rpi_iqaudio_dac_dai,
+ .num_links = ARRAY_SIZE(snd_rpi_iqaudio_dac_dai),
+};
+
+static int snd_rpi_iqaudio_dac_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+ bool gpio_unmute = false;
+
+ snd_rpi_iqaudio_dac.dev = &pdev->dev;
+
+ if (pdev->dev.of_node) {
+ struct device_node *i2s_node;
+ struct snd_soc_card *card = &snd_rpi_iqaudio_dac;
+ struct snd_soc_dai_link *dai = &snd_rpi_iqaudio_dac_dai[0];
+ bool auto_gpio_mute = false;
+
+ i2s_node = of_parse_phandle(pdev->dev.of_node,
+ "i2s-controller", 0);
+ if (i2s_node) {
+ dai->cpu_dai_name = NULL;
+ dai->cpu_of_node = i2s_node;
+ dai->platform_name = NULL;
+ dai->platform_of_node = i2s_node;
+ }
+
+ digital_gain_0db_limit = !of_property_read_bool(
+ pdev->dev.of_node, "iqaudio,24db_digital_gain");
+
+ if (of_property_read_string(pdev->dev.of_node, "card_name",
+ &card->name))
+ card->name = "IQaudIODAC";
+
+ if (of_property_read_string(pdev->dev.of_node, "dai_name",
+ &dai->name))
+ dai->name = "IQaudIO DAC";
+
+ if (of_property_read_string(pdev->dev.of_node,
+ "dai_stream_name", &dai->stream_name))
+ dai->stream_name = "IQaudIO DAC HiFi";
+
+ /* gpio_unmute - one time unmute amp using GPIO */
+ gpio_unmute = of_property_read_bool(pdev->dev.of_node,
+ "iqaudio-dac,unmute-amp");
+
+ /* auto_gpio_mute - mute/unmute amp using GPIO */
+ auto_gpio_mute = of_property_read_bool(pdev->dev.of_node,
+ "iqaudio-dac,auto-mute-amp");
+
+ if (auto_gpio_mute || gpio_unmute) {
+ mute_gpio = devm_gpiod_get_optional(&pdev->dev, "mute",
+ GPIOD_OUT_LOW);
+ if (IS_ERR(mute_gpio)) {
+ ret = PTR_ERR(mute_gpio);
+ dev_err(&pdev->dev,
+ "Failed to get mute gpio: %d\n", ret);
+ return ret;
+ }
+
+ if (auto_gpio_mute && mute_gpio)
+ snd_rpi_iqaudio_dac.set_bias_level =
+ snd_rpi_iqaudio_set_bias_level;
+ }
+ }
+
+ ret = snd_soc_register_card(&snd_rpi_iqaudio_dac);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "snd_soc_register_card() failed: %d\n", ret);
+ return ret;
+ }
+
+ if (gpio_unmute && mute_gpio)
+ snd_rpi_iqaudio_gpio_unmute(&snd_rpi_iqaudio_dac);
+
+ return 0;
+}
+
+static int snd_rpi_iqaudio_dac_remove(struct platform_device *pdev)
+{
+ snd_rpi_iqaudio_gpio_mute(&snd_rpi_iqaudio_dac);
+
+ return snd_soc_unregister_card(&snd_rpi_iqaudio_dac);
+}
+
+static const struct of_device_id iqaudio_of_match[] = {
+ { .compatible = "iqaudio,iqaudio-dac", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, iqaudio_of_match);
+
+static struct platform_driver snd_rpi_iqaudio_dac_driver = {
+ .driver = {
+ .name = "snd-rpi-iqaudio-dac",
+ .owner = THIS_MODULE,
+ .of_match_table = iqaudio_of_match,
+ },
+ .probe = snd_rpi_iqaudio_dac_probe,
+ .remove = snd_rpi_iqaudio_dac_remove,
+};
+
+module_platform_driver(snd_rpi_iqaudio_dac_driver);
+
+MODULE_AUTHOR("Florian Meier <florian.meier@koalo.de>");
+MODULE_DESCRIPTION("ASoC Driver for IQAudio DAC");
+MODULE_LICENSE("GPL v2");

24
target/linux/brcm2708/patches-4.9/0071-iqaudio-dac-Compile-fix-untested.patch Normal file
View File

@ -0,0 +1,24 @@
From bde9a1a68dbc0fe50a899b2178128068482f4ec9 Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Mon, 25 Jul 2016 17:06:50 +0100
Subject: [PATCH] iqaudio-dac: Compile fix - untested
---
sound/soc/bcm/iqaudio-dac.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/sound/soc/bcm/iqaudio-dac.c
+++ b/sound/soc/bcm/iqaudio-dac.c
@@ -76,7 +76,11 @@ static void snd_rpi_iqaudio_gpio_unmute(
static int snd_rpi_iqaudio_set_bias_level(struct snd_soc_card *card,
struct snd_soc_dapm_context *dapm, enum snd_soc_bias_level level)
{
- struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
+ struct snd_soc_pcm_runtime *rtd;
+ struct snd_soc_dai *codec_dai;
+
+ rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
+ codec_dai = rtd->codec_dai;
if (dapm->dev != codec_dai->dev)
return 0;

618
target/linux/brcm2708/patches-4.9/0072-Added-support-for-HiFiBerry-DAC.patch Normal file
View File

@ -0,0 +1,618 @@
From 728a454670c1c65e518a81122683f6cd1e08e967 Mon Sep 17 00:00:00 2001
From: Daniel Matuschek <info@crazy-audio.com>
Date: Mon, 4 Aug 2014 10:06:56 +0200
Subject: [PATCH] Added support for HiFiBerry DAC+
The driver is based on the HiFiBerry DAC driver. However HiFiBerry DAC+ uses
a different codec chip (PCM5122), therefore a new driver is necessary.
Add support for the HiFiBerry DAC+ Pro.
The HiFiBerry DAC+ and DAC+ Pro products both use the existing bcm sound driver with the DAC+ Pro having a special clock device driver representing the two high precision oscillators.
An addition bug fix is included for the PCM512x codec where by the physical size of the sample frame is used in the calculation of the LRCK divisor as it was found to be wrong when using 24-bit depth sample contained in a little endian 4-byte sample frame.
Limit PCM512x "Digital" gain to 0dB by default with HiFiBerry DAC+
24db_digital_gain DT param can be used to specify that PCM512x
codec "Digital" volume control should not be limited to 0dB gain,
and if specified will allow the full 24dB gain.
Add dt param to force HiFiBerry DAC+ Pro into slave mode
"dtoverlay=hifiberry-dacplus,slave"
Add 'slave' param to use HiFiBerry DAC+ Pro in slave mode,
with Pi as master for bit and frame clock.
Signed-off-by: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk>
---
drivers/clk/Makefile | 1 +
drivers/clk/clk-hifiberry-dacpro.c | 160 +++++++++++++++++
sound/soc/bcm/Kconfig | 7 +
sound/soc/bcm/Makefile | 2 +
sound/soc/bcm/hifiberry_dacplus.c | 359 +++++++++++++++++++++++++++++++++++++
sound/soc/codecs/pcm512x.c | 3 +-
6 files changed, 531 insertions(+), 1 deletion(-)
create mode 100644 drivers/clk/clk-hifiberry-dacpro.c
create mode 100644 sound/soc/bcm/hifiberry_dacplus.c
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -26,6 +26,7 @@ obj-$(CONFIG_ARCH_CLPS711X) += clk-clps
obj-$(CONFIG_COMMON_CLK_CS2000_CP) += clk-cs2000-cp.o
obj-$(CONFIG_ARCH_EFM32) += clk-efm32gg.o
obj-$(CONFIG_ARCH_HIGHBANK) += clk-highbank.o
+obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += clk-hifiberry-dacpro.o
obj-$(CONFIG_COMMON_CLK_MAX77686) += clk-max77686.o
obj-$(CONFIG_ARCH_MB86S7X) += clk-mb86s7x.o
obj-$(CONFIG_ARCH_MOXART) += clk-moxart.o
--- /dev/null
+++ b/drivers/clk/clk-hifiberry-dacpro.c
@@ -0,0 +1,160 @@
+/*
+ * Clock Driver for HiFiBerry DAC Pro
+ *
+ * Author: Stuart MacLean
+ * Copyright 2015
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+
+/* Clock rate of CLK44EN attached to GPIO6 pin */
+#define CLK_44EN_RATE 22579200UL
+/* Clock rate of CLK48EN attached to GPIO3 pin */
+#define CLK_48EN_RATE 24576000UL
+
+/**
+ * struct hifiberry_dacpro_clk - Common struct to the HiFiBerry DAC Pro
+ * @hw: clk_hw for the common clk framework
+ * @mode: 0 => CLK44EN, 1 => CLK48EN
+ */
+struct clk_hifiberry_hw {
+ struct clk_hw hw;
+ uint8_t mode;
+};
+
+#define to_hifiberry_clk(_hw) container_of(_hw, struct clk_hifiberry_hw, hw)
+
+static const struct of_device_id clk_hifiberry_dacpro_dt_ids[] = {
+ { .compatible = "hifiberry,dacpro-clk",},
+ { }
+};
+MODULE_DEVICE_TABLE(of, clk_hifiberry_dacpro_dt_ids);
+
+static unsigned long clk_hifiberry_dacpro_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ return (to_hifiberry_clk(hw)->mode == 0) ? CLK_44EN_RATE :
+ CLK_48EN_RATE;
+}
+
+static long clk_hifiberry_dacpro_round_rate(struct clk_hw *hw,
+ unsigned long rate, unsigned long *parent_rate)
+{
+ long actual_rate;
+
+ if (rate <= CLK_44EN_RATE) {
+ actual_rate = (long)CLK_44EN_RATE;
+ } else if (rate >= CLK_48EN_RATE) {
+ actual_rate = (long)CLK_48EN_RATE;
+ } else {
+ long diff44Rate = (long)(rate - CLK_44EN_RATE);
+ long diff48Rate = (long)(CLK_48EN_RATE - rate);
+
+ if (diff44Rate < diff48Rate)
+ actual_rate = (long)CLK_44EN_RATE;
+ else
+ actual_rate = (long)CLK_48EN_RATE;
+ }
+ return actual_rate;
+}
+
+
+static int clk_hifiberry_dacpro_set_rate(struct clk_hw *hw,
+ unsigned long rate, unsigned long parent_rate)
+{
+ unsigned long actual_rate;
+ struct clk_hifiberry_hw *clk = to_hifiberry_clk(hw);
+
+ actual_rate = (unsigned long)clk_hifiberry_dacpro_round_rate(hw, rate,
+ &parent_rate);
+ clk->mode = (actual_rate == CLK_44EN_RATE) ? 0 : 1;
+ return 0;
+}
+
+
+const struct clk_ops clk_hifiberry_dacpro_rate_ops = {
+ .recalc_rate = clk_hifiberry_dacpro_recalc_rate,
+ .round_rate = clk_hifiberry_dacpro_round_rate,
+ .set_rate = clk_hifiberry_dacpro_set_rate,
+};
+
+static int clk_hifiberry_dacpro_probe(struct platform_device *pdev)
+{
+ int ret;
+ struct clk_hifiberry_hw *proclk;
+ struct clk *clk;
+ struct device *dev;
+ struct clk_init_data init;
+
+ dev = &pdev->dev;
+
+ proclk = kzalloc(sizeof(struct clk_hifiberry_hw), GFP_KERNEL);
+ if (!proclk)
+ return -ENOMEM;
+
+ init.name = "clk-hifiberry-dacpro";
+ init.ops = &clk_hifiberry_dacpro_rate_ops;
+ init.flags = CLK_IS_BASIC;
+ init.parent_names = NULL;
+ init.num_parents = 0;
+
+ proclk->mode = 0;
+ proclk->hw.init = &init;
+
+ clk = devm_clk_register(dev, &proclk->hw);
+ if (!IS_ERR(clk)) {
+ ret = of_clk_add_provider(dev->of_node, of_clk_src_simple_get,
+ clk);
+ } else {
+ dev_err(dev, "Fail to register clock driver\n");
+ kfree(proclk);
+ ret = PTR_ERR(clk);
+ }
+ return ret;
+}
+
+static int clk_hifiberry_dacpro_remove(struct platform_device *pdev)
+{
+ of_clk_del_provider(pdev->dev.of_node);
+ return 0;
+}
+
+static struct platform_driver clk_hifiberry_dacpro_driver = {
+ .probe = clk_hifiberry_dacpro_probe,
+ .remove = clk_hifiberry_dacpro_remove,
+ .driver = {
+ .name = "clk-hifiberry-dacpro",
+ .of_match_table = clk_hifiberry_dacpro_dt_ids,
+ },
+};
+
+static int __init clk_hifiberry_dacpro_init(void)
+{
+ return platform_driver_register(&clk_hifiberry_dacpro_driver);
+}
+core_initcall(clk_hifiberry_dacpro_init);
+
+static void __exit clk_hifiberry_dacpro_exit(void)
+{
+ platform_driver_unregister(&clk_hifiberry_dacpro_driver);
+}
+module_exit(clk_hifiberry_dacpro_exit);
+
+MODULE_DESCRIPTION("HiFiBerry DAC Pro clock driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:clk-hifiberry-dacpro");
--- a/sound/soc/bcm/Kconfig
+++ b/sound/soc/bcm/Kconfig
@@ -24,6 +24,13 @@ config SND_BCM2708_SOC_HIFIBERRY_DAC
help
Say Y or M if you want to add support for HifiBerry DAC.
+config SND_BCM2708_SOC_HIFIBERRY_DACPLUS
+ tristate "Support for HifiBerry DAC+"
+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+ select SND_SOC_PCM512x
+ help
+ Say Y or M if you want to add support for HifiBerry DAC+.
+
config SND_BCM2708_SOC_HIFIBERRY_DIGI
tristate "Support for HifiBerry Digi"
depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
--- a/sound/soc/bcm/Makefile
+++ b/sound/soc/bcm/Makefile
@@ -10,11 +10,13 @@ obj-$(CONFIG_SND_SOC_CYGNUS) += snd-soc-
# BCM2708 Machine Support
snd-soc-hifiberry-dac-objs := hifiberry_dac.o
+snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o
snd-soc-hifiberry-digi-objs := hifiberry_digi.o
snd-soc-rpi-dac-objs := rpi-dac.o
snd-soc-iqaudio-dac-objs := iqaudio-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
+obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) += snd-soc-hifiberry-digi.o
obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
--- /dev/null
+++ b/sound/soc/bcm/hifiberry_dacplus.c
@@ -0,0 +1,359 @@
+/*
+ * ASoC Driver for HiFiBerry DAC+ / DAC Pro
+ *
+ * Author: Daniel Matuschek, Stuart MacLean <stuart@hifiberry.com>
+ * Copyright 2014-2015
+ * based on code by Florian Meier <florian.meier@koalo.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/kernel.h>
+#include <linux/clk.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+
+#include "../codecs/pcm512x.h"
+
+#define HIFIBERRY_DACPRO_NOCLOCK 0
+#define HIFIBERRY_DACPRO_CLK44EN 1
+#define HIFIBERRY_DACPRO_CLK48EN 2
+
+struct pcm512x_priv {
+ struct regmap *regmap;
+ struct clk *sclk;
+};
+
+/* Clock rate of CLK44EN attached to GPIO6 pin */
+#define CLK_44EN_RATE 22579200UL
+/* Clock rate of CLK48EN attached to GPIO3 pin */
+#define CLK_48EN_RATE 24576000UL
+
+static bool slave;
+static bool snd_rpi_hifiberry_is_dacpro;
+static bool digital_gain_0db_limit = true;
+
+static void snd_rpi_hifiberry_dacplus_select_clk(struct snd_soc_codec *codec,
+ int clk_id)
+{
+ switch (clk_id) {
+ case HIFIBERRY_DACPRO_NOCLOCK:
+ snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x24, 0x00);
+ break;
+ case HIFIBERRY_DACPRO_CLK44EN:
+ snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x24, 0x20);
+ break;
+ case HIFIBERRY_DACPRO_CLK48EN:
+ snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x24, 0x04);
+ break;
+ }
+}
+
+static void snd_rpi_hifiberry_dacplus_clk_gpio(struct snd_soc_codec *codec)
+{
+ snd_soc_update_bits(codec, PCM512x_GPIO_EN, 0x24, 0x24);
+ snd_soc_update_bits(codec, PCM512x_GPIO_OUTPUT_3, 0x0f, 0x02);
+ snd_soc_update_bits(codec, PCM512x_GPIO_OUTPUT_6, 0x0f, 0x02);
+}
+
+static bool snd_rpi_hifiberry_dacplus_is_sclk(struct snd_soc_codec *codec)
+{
+ int sck;
+
+ sck = snd_soc_read(codec, PCM512x_RATE_DET_4);
+ return (!(sck & 0x40));
+}
+
+static bool snd_rpi_hifiberry_dacplus_is_sclk_sleep(
+ struct snd_soc_codec *codec)
+{
+ msleep(2);
+ return snd_rpi_hifiberry_dacplus_is_sclk(codec);
+}
+
+static bool snd_rpi_hifiberry_dacplus_is_pro_card(struct snd_soc_codec *codec)
+{
+ bool isClk44EN, isClk48En, isNoClk;
+
+ snd_rpi_hifiberry_dacplus_clk_gpio(codec);
+
+ snd_rpi_hifiberry_dacplus_select_clk(codec, HIFIBERRY_DACPRO_CLK44EN);
+ isClk44EN = snd_rpi_hifiberry_dacplus_is_sclk_sleep(codec);
+
+ snd_rpi_hifiberry_dacplus_select_clk(codec, HIFIBERRY_DACPRO_NOCLOCK);
+ isNoClk = snd_rpi_hifiberry_dacplus_is_sclk_sleep(codec);
+
+ snd_rpi_hifiberry_dacplus_select_clk(codec, HIFIBERRY_DACPRO_CLK48EN);
+ isClk48En = snd_rpi_hifiberry_dacplus_is_sclk_sleep(codec);
+
+ return (isClk44EN && isClk48En && !isNoClk);
+}
+
+static int snd_rpi_hifiberry_dacplus_clk_for_rate(int sample_rate)
+{
+ int type;
+
+ switch (sample_rate) {
+ case 11025:
+ case 22050:
+ case 44100:
+ case 88200:
+ case 176400:
+ type = HIFIBERRY_DACPRO_CLK44EN;
+ break;
+ default:
+ type = HIFIBERRY_DACPRO_CLK48EN;
+ break;
+ }
+ return type;
+}
+
+static void snd_rpi_hifiberry_dacplus_set_sclk(struct snd_soc_codec *codec,
+ int sample_rate)
+{
+ struct pcm512x_priv *pcm512x = snd_soc_codec_get_drvdata(codec);
+
+ if (!IS_ERR(pcm512x->sclk)) {
+ int ctype;
+
+ ctype = snd_rpi_hifiberry_dacplus_clk_for_rate(sample_rate);
+ clk_set_rate(pcm512x->sclk, (ctype == HIFIBERRY_DACPRO_CLK44EN)
+ ? CLK_44EN_RATE : CLK_48EN_RATE);
+ snd_rpi_hifiberry_dacplus_select_clk(codec, ctype);
+ }
+}
+
+static int snd_rpi_hifiberry_dacplus_init(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_soc_codec *codec = rtd->codec;
+ struct pcm512x_priv *priv;
+
+ if (slave)
+ snd_rpi_hifiberry_is_dacpro = false;
+ else
+ snd_rpi_hifiberry_is_dacpro =
+ snd_rpi_hifiberry_dacplus_is_pro_card(codec);
+
+ if (snd_rpi_hifiberry_is_dacpro) {
+ struct snd_soc_dai_link *dai = rtd->dai_link;
+
+ dai->name = "HiFiBerry DAC+ Pro";
+ dai->stream_name = "HiFiBerry DAC+ Pro HiFi";
+ dai->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+ | SND_SOC_DAIFMT_CBM_CFM;
+
+ snd_soc_update_bits(codec, PCM512x_BCLK_LRCLK_CFG, 0x31, 0x11);
+ snd_soc_update_bits(codec, PCM512x_MASTER_MODE, 0x03, 0x03);
+ snd_soc_update_bits(codec, PCM512x_MASTER_CLKDIV_2, 0x7f, 63);
+ } else {
+ priv = snd_soc_codec_get_drvdata(codec);
+ priv->sclk = ERR_PTR(-ENOENT);
+ }
+
+ snd_soc_update_bits(codec, PCM512x_GPIO_EN, 0x08, 0x08);
+ snd_soc_update_bits(codec, PCM512x_GPIO_OUTPUT_4, 0x0f, 0x02);
+ snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
+
+ if (digital_gain_0db_limit)
+ {
+ int ret;
+ struct snd_soc_card *card = rtd->card;
+
+ ret = snd_soc_limit_volume(card, "Digital Playback Volume", 207);
+ if (ret < 0)
+ dev_warn(card->dev, "Failed to set volume limit: %d\n", ret);
+ }
+
+ return 0;
+}
+
+static int snd_rpi_hifiberry_dacplus_update_rate_den(
+ struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_codec *codec = rtd->codec;
+ struct pcm512x_priv *pcm512x = snd_soc_codec_get_drvdata(codec);
+ struct snd_ratnum *rats_no_pll;
+ unsigned int num = 0, den = 0;
+ int err;
+
+ rats_no_pll = devm_kzalloc(rtd->dev, sizeof(*rats_no_pll), GFP_KERNEL);
+ if (!rats_no_pll)
+ return -ENOMEM;
+
+ rats_no_pll->num = clk_get_rate(pcm512x->sclk) / 64;
+ rats_no_pll->den_min = 1;
+ rats_no_pll->den_max = 128;
+ rats_no_pll->den_step = 1;
+
+ err = snd_interval_ratnum(hw_param_interval(params,
+ SNDRV_PCM_HW_PARAM_RATE), 1, rats_no_pll, &num, &den);
+ if (err >= 0 && den) {
+ params->rate_num = num;
+ params->rate_den = den;
+ }
+
+ devm_kfree(rtd->dev, rats_no_pll);
+ return 0;
+}
+
+static int snd_rpi_hifiberry_dacplus_set_bclk_ratio_pro(
+ struct snd_soc_dai *cpu_dai, struct snd_pcm_hw_params *params)
+{
+ int bratio = snd_pcm_format_physical_width(params_format(params))
+ * params_channels(params);
+ return snd_soc_dai_set_bclk_ratio(cpu_dai, bratio);
+}
+
+static int snd_rpi_hifiberry_dacplus_hw_params(
+ struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
+{
+ int ret;
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+
+ if (snd_rpi_hifiberry_is_dacpro) {
+ struct snd_soc_codec *codec = rtd->codec;
+
+ snd_rpi_hifiberry_dacplus_set_sclk(codec,
+ params_rate(params));
+
+ ret = snd_rpi_hifiberry_dacplus_set_bclk_ratio_pro(cpu_dai,
+ params);
+ if (!ret)
+ ret = snd_rpi_hifiberry_dacplus_update_rate_den(
+ substream, params);
+ } else {
+ ret = snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
+ }
+ return ret;
+}
+
+static int snd_rpi_hifiberry_dacplus_startup(
+ struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_codec *codec = rtd->codec;
+
+ snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
+ return 0;
+}
+
+static void snd_rpi_hifiberry_dacplus_shutdown(
+ struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_codec *codec = rtd->codec;
+
+ snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08, 0x00);
+}
+
+/* machine stream operations */
+static struct snd_soc_ops snd_rpi_hifiberry_dacplus_ops = {
+ .hw_params = snd_rpi_hifiberry_dacplus_hw_params,
+ .startup = snd_rpi_hifiberry_dacplus_startup,
+ .shutdown = snd_rpi_hifiberry_dacplus_shutdown,
+};
+
+static struct snd_soc_dai_link snd_rpi_hifiberry_dacplus_dai[] = {
+{
+ .name = "HiFiBerry DAC+",
+ .stream_name = "HiFiBerry DAC+ HiFi",
+ .cpu_dai_name = "bcm2708-i2s.0",
+ .codec_dai_name = "pcm512x-hifi",
+ .platform_name = "bcm2708-i2s.0",
+ .codec_name = "pcm512x.1-004d",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS,
+ .ops = &snd_rpi_hifiberry_dacplus_ops,
+ .init = snd_rpi_hifiberry_dacplus_init,
+},
+};
+
+/* audio machine driver */
+static struct snd_soc_card snd_rpi_hifiberry_dacplus = {
+ .name = "snd_rpi_hifiberry_dacplus",
+ .driver_name = "HifiberryDacp",
+ .owner = THIS_MODULE,
+ .dai_link = snd_rpi_hifiberry_dacplus_dai,
+ .num_links = ARRAY_SIZE(snd_rpi_hifiberry_dacplus_dai),
+};
+
+static int snd_rpi_hifiberry_dacplus_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+
+ snd_rpi_hifiberry_dacplus.dev = &pdev->dev;
+ if (pdev->dev.of_node) {
+ struct device_node *i2s_node;
+ struct snd_soc_dai_link *dai;
+
+ dai = &snd_rpi_hifiberry_dacplus_dai[0];
+ i2s_node = of_parse_phandle(pdev->dev.of_node,
+ "i2s-controller", 0);
+
+ if (i2s_node) {
+ dai->cpu_dai_name = NULL;
+ dai->cpu_of_node = i2s_node;
+ dai->platform_name = NULL;
+ dai->platform_of_node = i2s_node;
+ }
+
+ digital_gain_0db_limit = !of_property_read_bool(
+ pdev->dev.of_node, "hifiberry,24db_digital_gain");
+ slave = of_property_read_bool(pdev->dev.of_node,
+ "hifiberry-dacplus,slave");
+ }
+
+ ret = snd_soc_register_card(&snd_rpi_hifiberry_dacplus);
+ if (ret)
+ dev_err(&pdev->dev,
+ "snd_soc_register_card() failed: %d\n", ret);
+
+ return ret;
+}
+
+static int snd_rpi_hifiberry_dacplus_remove(struct platform_device *pdev)
+{
+ return snd_soc_unregister_card(&snd_rpi_hifiberry_dacplus);
+}
+
+static const struct of_device_id snd_rpi_hifiberry_dacplus_of_match[] = {
+ { .compatible = "hifiberry,hifiberry-dacplus", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, snd_rpi_hifiberry_dacplus_of_match);
+
+static struct platform_driver snd_rpi_hifiberry_dacplus_driver = {
+ .driver = {
+ .name = "snd-rpi-hifiberry-dacplus",
+ .owner = THIS_MODULE,
+ .of_match_table = snd_rpi_hifiberry_dacplus_of_match,
+ },
+ .probe = snd_rpi_hifiberry_dacplus_probe,
+ .remove = snd_rpi_hifiberry_dacplus_remove,
+};
+
+module_platform_driver(snd_rpi_hifiberry_dacplus_driver);
+
+MODULE_AUTHOR("Daniel Matuschek <daniel@hifiberry.com>");
+MODULE_DESCRIPTION("ASoC Driver for HiFiBerry DAC+");
+MODULE_LICENSE("GPL v2");
--- a/sound/soc/codecs/pcm512x.c
+++ b/sound/soc/codecs/pcm512x.c
@@ -854,7 +854,8 @@ static int pcm512x_set_dividers(struct s
int fssp;
int gpio;
- lrclk_div = snd_soc_params_to_frame_size(params);
+ lrclk_div = snd_pcm_format_physical_width(params_format(params))
+ * params_channels(params);
if (lrclk_div == 0) {
dev_err(dev, "No LRCLK?\n");
return -EINVAL;

818
target/linux/brcm2708/patches-4.9/0073-Added-driver-for-HiFiBerry-Amp-amplifier-add-on-boar.patch Normal file
View File

@ -0,0 +1,818 @@
From a9a8a1127418a342cfd7409d10137cbe4e20b951 Mon Sep 17 00:00:00 2001
From: Daniel Matuschek <info@crazy-audio.com>
Date: Mon, 4 Aug 2014 11:09:58 +0200
Subject: [PATCH] Added driver for HiFiBerry Amp amplifier add-on board
The driver contains a low-level hardware driver for the TAS5713 and the
drivers for the Raspberry Pi I2S subsystem.
TAS5713: return error if initialisation fails
Existing TAS5713 driver logs errors during initialisation, but does not return
an error code. Therefore even if initialisation fails, the driver will still be
loaded, but won't work. This patch fixes this. I2C communication error will now
reported correctly by a non-zero return code.
HiFiBerry Amp: fix device-tree problems
Some code to load the driver based on device-tree-overlays was missing. This is added by this patch.
---
sound/soc/bcm/Kconfig | 7 +
sound/soc/bcm/Makefile | 2 +
sound/soc/bcm/hifiberry_amp.c | 129 +++++++++++++++
sound/soc/codecs/Kconfig | 4 +
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/tas5713.c | 369 ++++++++++++++++++++++++++++++++++++++++++
sound/soc/codecs/tas5713.h | 210 ++++++++++++++++++++++++
7 files changed, 723 insertions(+)
create mode 100644 sound/soc/bcm/hifiberry_amp.c
create mode 100644 sound/soc/codecs/tas5713.c
create mode 100644 sound/soc/codecs/tas5713.h
--- a/sound/soc/bcm/Kconfig
+++ b/sound/soc/bcm/Kconfig
@@ -38,6 +38,13 @@ config SND_BCM2708_SOC_HIFIBERRY_DIGI
help
Say Y or M if you want to add support for HifiBerry Digi S/PDIF output board.
+config SND_BCM2708_SOC_HIFIBERRY_AMP
+ tristate "Support for the HifiBerry Amp"
+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+ select SND_SOC_TAS5713
+ help
+ Say Y or M if you want to add support for the HifiBerry Amp amplifier board.
+
config SND_BCM2708_SOC_RPI_DAC
tristate "Support for RPi-DAC"
depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
--- a/sound/soc/bcm/Makefile
+++ b/sound/soc/bcm/Makefile
@@ -12,11 +12,13 @@ obj-$(CONFIG_SND_SOC_CYGNUS) += snd-soc-
snd-soc-hifiberry-dac-objs := hifiberry_dac.o
snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o
snd-soc-hifiberry-digi-objs := hifiberry_digi.o
+snd-soc-hifiberry-amp-objs := hifiberry_amp.o
snd-soc-rpi-dac-objs := rpi-dac.o
snd-soc-iqaudio-dac-objs := iqaudio-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) += snd-soc-hifiberry-digi.o
+obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP) += snd-soc-hifiberry-amp.o
obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
--- /dev/null
+++ b/sound/soc/bcm/hifiberry_amp.c
@@ -0,0 +1,129 @@
+/*
+ * ASoC Driver for HifiBerry AMP
+ *
+ * Author: Sebastian Eickhoff <basti.eickhoff@googlemail.com>
+ * Copyright 2014
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+
+static int snd_rpi_hifiberry_amp_init(struct snd_soc_pcm_runtime *rtd)
+{
+ // ToDo: init of the dsp-registers.
+ return 0;
+}
+
+static int snd_rpi_hifiberry_amp_hw_params( struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params )
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+
+ return snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
+}
+
+static struct snd_soc_ops snd_rpi_hifiberry_amp_ops = {
+ .hw_params = snd_rpi_hifiberry_amp_hw_params,
+};
+
+static struct snd_soc_dai_link snd_rpi_hifiberry_amp_dai[] = {
+ {
+ .name = "HifiBerry AMP",
+ .stream_name = "HifiBerry AMP HiFi",
+ .cpu_dai_name = "bcm2708-i2s.0",
+ .codec_dai_name = "tas5713-hifi",
+ .platform_name = "bcm2708-i2s.0",
+ .codec_name = "tas5713.1-001b",
+ .dai_fmt = SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS,
+ .ops = &snd_rpi_hifiberry_amp_ops,
+ .init = snd_rpi_hifiberry_amp_init,
+ },
+};
+
+
+static struct snd_soc_card snd_rpi_hifiberry_amp = {
+ .name = "snd_rpi_hifiberry_amp",
+ .driver_name = "HifiberryAmp",
+ .owner = THIS_MODULE,
+ .dai_link = snd_rpi_hifiberry_amp_dai,
+ .num_links = ARRAY_SIZE(snd_rpi_hifiberry_amp_dai),
+};
+
+static const struct of_device_id snd_rpi_hifiberry_amp_of_match[] = {
+ { .compatible = "hifiberry,hifiberry-amp", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, snd_rpi_hifiberry_amp_of_match);
+
+
+static int snd_rpi_hifiberry_amp_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+
+ snd_rpi_hifiberry_amp.dev = &pdev->dev;
+
+ if (pdev->dev.of_node) {
+ struct device_node *i2s_node;
+ struct snd_soc_dai_link *dai = &snd_rpi_hifiberry_amp_dai[0];
+ i2s_node = of_parse_phandle(pdev->dev.of_node,
+ "i2s-controller", 0);
+
+ if (i2s_node) {
+ dai->cpu_dai_name = NULL;
+ dai->cpu_of_node = i2s_node;
+ dai->platform_name = NULL;
+ dai->platform_of_node = i2s_node;
+ }
+ }
+
+ ret = snd_soc_register_card(&snd_rpi_hifiberry_amp);
+
+ if (ret != 0) {
+ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret);
+ }
+
+ return ret;
+}
+
+
+static int snd_rpi_hifiberry_amp_remove(struct platform_device *pdev)
+{
+ return snd_soc_unregister_card(&snd_rpi_hifiberry_amp);
+}
+
+
+static struct platform_driver snd_rpi_hifiberry_amp_driver = {
+ .driver = {
+ .name = "snd-hifiberry-amp",
+ .owner = THIS_MODULE,
+ .of_match_table = snd_rpi_hifiberry_amp_of_match,
+ },
+ .probe = snd_rpi_hifiberry_amp_probe,
+ .remove = snd_rpi_hifiberry_amp_remove,
+};
+
+
+module_platform_driver(snd_rpi_hifiberry_amp_driver);
+
+
+MODULE_AUTHOR("Sebastian Eickhoff <basti.eickhoff@googlemail.com>");
+MODULE_DESCRIPTION("ASoC driver for HiFiBerry-AMP");
+MODULE_LICENSE("GPL v2");
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -139,6 +139,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_TFA9879 if I2C
select SND_SOC_TLV320AIC23_I2C if I2C
select SND_SOC_TLV320AIC23_SPI if SPI_MASTER
+ select SND_SOC_TAS5713 if I2C
select SND_SOC_TLV320AIC26 if SPI_MASTER
select SND_SOC_TLV320AIC31XX if I2C
select SND_SOC_TLV320AIC32X4_I2C if I2C
@@ -821,6 +822,9 @@ config SND_SOC_TFA9879
tristate "NXP Semiconductors TFA9879 amplifier"
depends on I2C
+config SND_SOC_TAS5713
+ tristate
+
config SND_SOC_TLV320AIC23
tristate
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -144,6 +144,7 @@ snd-soc-tas5086-objs := tas5086.o
snd-soc-tas571x-objs := tas571x.o
snd-soc-tas5720-objs := tas5720.o
snd-soc-tfa9879-objs := tfa9879.o
+snd-soc-tas5713-objs := tas5713.o
snd-soc-tlv320aic23-objs := tlv320aic23.o
snd-soc-tlv320aic23-i2c-objs := tlv320aic23-i2c.o
snd-soc-tlv320aic23-spi-objs := tlv320aic23-spi.o
@@ -366,6 +367,7 @@ obj-$(CONFIG_SND_SOC_TAS5086) += snd-soc
obj-$(CONFIG_SND_SOC_TAS571X) += snd-soc-tas571x.o
obj-$(CONFIG_SND_SOC_TAS5720) += snd-soc-tas5720.o
obj-$(CONFIG_SND_SOC_TFA9879) += snd-soc-tfa9879.o
+obj-$(CONFIG_SND_SOC_TAS5713) += snd-soc-tas5713.o
obj-$(CONFIG_SND_SOC_TLV320AIC23) += snd-soc-tlv320aic23.o
obj-$(CONFIG_SND_SOC_TLV320AIC23_I2C) += snd-soc-tlv320aic23-i2c.o
obj-$(CONFIG_SND_SOC_TLV320AIC23_SPI) += snd-soc-tlv320aic23-spi.o
--- /dev/null
+++ b/sound/soc/codecs/tas5713.c
@@ -0,0 +1,369 @@
+/*
+ * ASoC Driver for TAS5713
+ *
+ * Author: Sebastian Eickhoff <basti.eickhoff@googlemail.com>
+ * Copyright 2014
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/i2c.h>
+#include <linux/of_device.h>
+#include <linux/spi/spi.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/initval.h>
+#include <sound/tlv.h>
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/fs.h>
+#include <asm/uaccess.h>
+
+#include "tas5713.h"
+
+
+static struct i2c_client *i2c;
+
+struct tas5713_priv {
+ struct regmap *regmap;
+ int mclk_div;
+ struct snd_soc_codec *codec;
+};
+
+static struct tas5713_priv *priv_data;
+
+
+
+
+/*
+ * _ _ ___ _ ___ _ _
+ * /_\ | | / __| /_\ / __|___ _ _| |_ _ _ ___| |___
+ * / _ \| |__\__ \/ _ \ | (__/ _ \ ' \ _| '_/ _ \ (_-<
+ * /_/ \_\____|___/_/ \_\ \___\___/_||_\__|_| \___/_/__/
+ *
+ */
+
+static const DECLARE_TLV_DB_SCALE(tas5713_vol_tlv, -10000, 50, 1);
+
+
+static const struct snd_kcontrol_new tas5713_snd_controls[] = {
+ SOC_SINGLE_TLV ("Master" , TAS5713_VOL_MASTER, 0, 248, 1, tas5713_vol_tlv),
+ SOC_DOUBLE_R_TLV("Channels" , TAS5713_VOL_CH1, TAS5713_VOL_CH2, 0, 248, 1, tas5713_vol_tlv)
+};
+
+
+
+
+/*
+ * __ __ _ _ ___ _
+ * | \/ |__ _ __| |_ (_)_ _ ___ | \ _ _(_)_ _____ _ _
+ * | |\/| / _` / _| ' \| | ' \/ -_) | |) | '_| \ V / -_) '_|
+ * |_| |_\__,_\__|_||_|_|_||_\___| |___/|_| |_|\_/\___|_|
+ *
+ */
+
+static int tas5713_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ u16 blen = 0x00;
+
+ struct snd_soc_codec *codec;
+ codec = dai->codec;
+ priv_data->codec = dai->codec;
+
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ blen = 0x03;
+ break;
+ case SNDRV_PCM_FORMAT_S20_3LE:
+ blen = 0x1;
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ blen = 0x04;
+ break;
+ case SNDRV_PCM_FORMAT_S32_LE:
+ blen = 0x05;
+ break;
+ default:
+ dev_err(dai->dev, "Unsupported word length: %u\n",
+ params_format(params));
+ return -EINVAL;
+ }
+
+ // set word length
+ snd_soc_update_bits(codec, TAS5713_SERIAL_DATA_INTERFACE, 0x7, blen);
+
+ return 0;
+}
+
+
+static int tas5713_mute_stream(struct snd_soc_dai *dai, int mute, int stream)
+{
+ unsigned int val = 0;
+
+ struct tas5713_priv *tas5713;
+ struct snd_soc_codec *codec = dai->codec;
+ tas5713 = snd_soc_codec_get_drvdata(codec);
+
+ if (mute) {
+ val = TAS5713_SOFT_MUTE_ALL;
+ }
+
+ return regmap_write(tas5713->regmap, TAS5713_SOFT_MUTE, val);
+}
+
+
+static const struct snd_soc_dai_ops tas5713_dai_ops = {
+ .hw_params = tas5713_hw_params,
+ .mute_stream = tas5713_mute_stream,
+};
+
+
+static struct snd_soc_dai_driver tas5713_dai = {
+ .name = "tas5713-hifi",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_48000,
+ .formats = (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE ),
+ },
+ .ops = &tas5713_dai_ops,
+};
+
+
+
+
+/*
+ * ___ _ ___ _
+ * / __|___ __| |___ __ | \ _ _(_)_ _____ _ _
+ * | (__/ _ \/ _` / -_) _| | |) | '_| \ V / -_) '_|
+ * \___\___/\__,_\___\__| |___/|_| |_|\_/\___|_|
+ *
+ */
+
+static int tas5713_remove(struct snd_soc_codec *codec)
+{
+ struct tas5713_priv *tas5713;
+
+ tas5713 = snd_soc_codec_get_drvdata(codec);
+
+ return 0;
+}
+
+
+static int tas5713_probe(struct snd_soc_codec *codec)
+{
+ struct tas5713_priv *tas5713;
+ int i, ret;
+
+ i2c = container_of(codec->dev, struct i2c_client, dev);
+
+ tas5713 = snd_soc_codec_get_drvdata(codec);
+
+ // Reset error
+ ret = snd_soc_write(codec, TAS5713_ERROR_STATUS, 0x00);
+ if (ret < 0) return ret;
+
+ // Trim oscillator
+ ret = snd_soc_write(codec, TAS5713_OSC_TRIM, 0x00);
+ if (ret < 0) return ret;
+ msleep(1000);
+
+ // Reset error
+ ret = snd_soc_write(codec, TAS5713_ERROR_STATUS, 0x00);
+ if (ret < 0) return ret;
+
+ // Clock mode: 44/48kHz, MCLK=64xfs
+ ret = snd_soc_write(codec, TAS5713_CLOCK_CTRL, 0x60);
+ if (ret < 0) return ret;
+
+ // I2S 24bit
+ ret = snd_soc_write(codec, TAS5713_SERIAL_DATA_INTERFACE, 0x05);
+ if (ret < 0) return ret;
+
+ // Unmute
+ ret = snd_soc_write(codec, TAS5713_SYSTEM_CTRL2, 0x00);
+ if (ret < 0) return ret;
+ ret = snd_soc_write(codec, TAS5713_SOFT_MUTE, 0x00);
+ if (ret < 0) return ret;
+
+ // Set volume to 0db
+ ret = snd_soc_write(codec, TAS5713_VOL_MASTER, 0x00);
+ if (ret < 0) return ret;
+
+ // Now start programming the default initialization sequence
+ for (i = 0; i < ARRAY_SIZE(tas5713_init_sequence); ++i) {
+ ret = i2c_master_send(i2c,
+ tas5713_init_sequence[i].data,
+ tas5713_init_sequence[i].size);
+ if (ret < 0) {
+ printk(KERN_INFO "TAS5713 CODEC PROBE: InitSeq returns: %d\n", ret);
+ }
+ }
+
+ // Unmute
+ ret = snd_soc_write(codec, TAS5713_SYSTEM_CTRL2, 0x00);
+ if (ret < 0) return ret;
+
+ return 0;
+}
+
+
+static struct snd_soc_codec_driver soc_codec_dev_tas5713 = {
+ .probe = tas5713_probe,
+ .remove = tas5713_remove,
+ .controls = tas5713_snd_controls,
+ .num_controls = ARRAY_SIZE(tas5713_snd_controls),
+};
+
+
+
+
+/*
+ * ___ ___ ___ ___ _
+ * |_ _|_ ) __| | \ _ _(_)_ _____ _ _
+ * | | / / (__ | |) | '_| \ V / -_) '_|
+ * |___/___\___| |___/|_| |_|\_/\___|_|
+ *
+ */
+
+static const struct reg_default tas5713_reg_defaults[] = {
+ { 0x07 ,0x80 }, // R7 - VOL_MASTER - -40dB
+ { 0x08 , 30 }, // R8 - VOL_CH1 - 0dB
+ { 0x09 , 30 }, // R9 - VOL_CH2 - 0dB
+ { 0x0A ,0x80 }, // R10 - VOL_HEADPHONE - -40dB
+};
+
+
+static bool tas5713_reg_volatile(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case TAS5713_DEVICE_ID:
+ case TAS5713_ERROR_STATUS:
+ return true;
+ default:
+ return false;
+ }
+}
+
+
+static const struct of_device_id tas5713_of_match[] = {
+ { .compatible = "ti,tas5713", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, tas5713_of_match);
+
+
+static struct regmap_config tas5713_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+
+ .max_register = TAS5713_MAX_REGISTER,
+ .volatile_reg = tas5713_reg_volatile,
+
+ .cache_type = REGCACHE_RBTREE,
+ .reg_defaults = tas5713_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(tas5713_reg_defaults),
+};
+
+
+static int tas5713_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ int ret;
+
+ priv_data = devm_kzalloc(&i2c->dev, sizeof *priv_data, GFP_KERNEL);
+ if (!priv_data)
+ return -ENOMEM;
+
+ priv_data->regmap = devm_regmap_init_i2c(i2c, &tas5713_regmap_config);
+ if (IS_ERR(priv_data->regmap)) {
+ ret = PTR_ERR(priv_data->regmap);
+ return ret;
+ }
+
+ i2c_set_clientdata(i2c, priv_data);
+
+ ret = snd_soc_register_codec(&i2c->dev,
+ &soc_codec_dev_tas5713, &tas5713_dai, 1);
+
+ return ret;
+}
+
+
+static int tas5713_i2c_remove(struct i2c_client *i2c)
+{
+ snd_soc_unregister_codec(&i2c->dev);
+ i2c_set_clientdata(i2c, NULL);
+
+ kfree(priv_data);
+
+ return 0;
+}
+
+
+static const struct i2c_device_id tas5713_i2c_id[] = {
+ { "tas5713", 0 },
+ { }
+};
+
+MODULE_DEVICE_TABLE(i2c, tas5713_i2c_id);
+
+
+static struct i2c_driver tas5713_i2c_driver = {
+ .driver = {
+ .name = "tas5713",
+ .owner = THIS_MODULE,
+ .of_match_table = tas5713_of_match,
+ },
+ .probe = tas5713_i2c_probe,
+ .remove = tas5713_i2c_remove,
+ .id_table = tas5713_i2c_id
+};
+
+
+static int __init tas5713_modinit(void)
+{
+ int ret = 0;
+
+ ret = i2c_add_driver(&tas5713_i2c_driver);
+ if (ret) {
+ printk(KERN_ERR "Failed to register tas5713 I2C driver: %d\n",
+ ret);
+ }
+
+ return ret;
+}
+module_init(tas5713_modinit);
+
+
+static void __exit tas5713_exit(void)
+{
+ i2c_del_driver(&tas5713_i2c_driver);
+}
+module_exit(tas5713_exit);
+
+
+MODULE_AUTHOR("Sebastian Eickhoff <basti.eickhoff@googlemail.com>");
+MODULE_DESCRIPTION("ASoC driver for TAS5713");
+MODULE_LICENSE("GPL v2");
--- /dev/null
+++ b/sound/soc/codecs/tas5713.h
@@ -0,0 +1,210 @@
+/*
+ * ASoC Driver for TAS5713
+ *
+ * Author: Sebastian Eickhoff <basti.eickhoff@googlemail.com>
+ * Copyright 2014
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#ifndef _TAS5713_H
+#define _TAS5713_H
+
+
+// TAS5713 I2C-bus register addresses
+
+#define TAS5713_CLOCK_CTRL 0x00
+#define TAS5713_DEVICE_ID 0x01
+#define TAS5713_ERROR_STATUS 0x02
+#define TAS5713_SYSTEM_CTRL1 0x03
+#define TAS5713_SERIAL_DATA_INTERFACE 0x04
+#define TAS5713_SYSTEM_CTRL2 0x05
+#define TAS5713_SOFT_MUTE 0x06
+#define TAS5713_VOL_MASTER 0x07
+#define TAS5713_VOL_CH1 0x08
+#define TAS5713_VOL_CH2 0x09
+#define TAS5713_VOL_HEADPHONE 0x0A
+#define TAS5713_VOL_CONFIG 0x0E
+#define TAS5713_MODULATION_LIMIT 0x10
+#define TAS5713_IC_DLY_CH1 0x11
+#define TAS5713_IC_DLY_CH2 0x12
+#define TAS5713_IC_DLY_CH3 0x13
+#define TAS5713_IC_DLY_CH4 0x14
+
+#define TAS5713_START_STOP_PERIOD 0x1A
+#define TAS5713_OSC_TRIM 0x1B
+#define TAS5713_BKND_ERR 0x1C
+
+#define TAS5713_INPUT_MUX 0x20
+#define TAS5713_SRC_SELECT_CH4 0x21
+#define TAS5713_PWM_MUX 0x25
+
+#define TAS5713_CH1_BQ0 0x29
+#define TAS5713_CH1_BQ1 0x2A
+#define TAS5713_CH1_BQ2 0x2B
+#define TAS5713_CH1_BQ3 0x2C
+#define TAS5713_CH1_BQ4 0x2D
+#define TAS5713_CH1_BQ5 0x2E
+#define TAS5713_CH1_BQ6 0x2F
+#define TAS5713_CH1_BQ7 0x58
+#define TAS5713_CH1_BQ8 0x59
+
+#define TAS5713_CH2_BQ0 0x30
+#define TAS5713_CH2_BQ1 0x31
+#define TAS5713_CH2_BQ2 0x32
+#define TAS5713_CH2_BQ3 0x33
+#define TAS5713_CH2_BQ4 0x34
+#define TAS5713_CH2_BQ5 0x35
+#define TAS5713_CH2_BQ6 0x36
+#define TAS5713_CH2_BQ7 0x5C
+#define TAS5713_CH2_BQ8 0x5D
+
+#define TAS5713_CH4_BQ0 0x5A
+#define TAS5713_CH4_BQ1 0x5B
+#define TAS5713_CH3_BQ0 0x5E
+#define TAS5713_CH3_BQ1 0x5F
+
+#define TAS5713_DRC1_SOFTENING_FILTER_ALPHA_OMEGA 0x3B
+#define TAS5713_DRC1_ATTACK_RELEASE_RATE 0x3C
+#define TAS5713_DRC2_SOFTENING_FILTER_ALPHA_OMEGA 0x3E
+#define TAS5713_DRC2_ATTACK_RELEASE_RATE 0x3F
+#define TAS5713_DRC1_ATTACK_RELEASE_THRES 0x40
+#define TAS5713_DRC2_ATTACK_RELEASE_THRES 0x43
+#define TAS5713_DRC_CTRL 0x46
+
+#define TAS5713_BANK_SW_CTRL 0x50
+#define TAS5713_CH1_OUTPUT_MIXER 0x51
+#define TAS5713_CH2_OUTPUT_MIXER 0x52
+#define TAS5713_CH1_INPUT_MIXER 0x53
+#define TAS5713_CH2_INPUT_MIXER 0x54
+#define TAS5713_OUTPUT_POST_SCALE 0x56
+#define TAS5713_OUTPUT_PRESCALE 0x57
+
+#define TAS5713_IDF_POST_SCALE 0x62
+
+#define TAS5713_CH1_INLINE_MIXER 0x70
+#define TAS5713_CH1_INLINE_DRC_EN_MIXER 0x71
+#define TAS5713_CH1_R_CHANNEL_MIXER 0x72
+#define TAS5713_CH1_L_CHANNEL_MIXER 0x73
+#define TAS5713_CH2_INLINE_MIXER 0x74
+#define TAS5713_CH2_INLINE_DRC_EN_MIXER 0x75
+#define TAS5713_CH2_L_CHANNEL_MIXER 0x76
+#define TAS5713_CH2_R_CHANNEL_MIXER 0x77
+
+#define TAS5713_UPDATE_DEV_ADDR_KEY 0xF8
+#define TAS5713_UPDATE_DEV_ADDR_REG 0xF9
+
+#define TAS5713_REGISTER_COUNT 0x46
+#define TAS5713_MAX_REGISTER 0xF9
+
+
+// Bitmasks for registers
+#define TAS5713_SOFT_MUTE_ALL 0x07
+
+
+
+struct tas5713_init_command {
+ const int size;
+ const char *const data;
+};
+
+static const struct tas5713_init_command tas5713_init_sequence[] = {
+
+ // Trim oscillator
+ { .size = 2, .data = "\x1B\x00" },
+ // System control register 1 (0x03): block DC
+ { .size = 2, .data = "\x03\x80" },
+ // Mute everything
+ { .size = 2, .data = "\x05\x40" },
+ // Modulation limit register (0x10): 97.7%
+ { .size = 2, .data = "\x10\x02" },
+ // Interchannel delay registers
+ // (0x11, 0x12, 0x13, and 0x14): BD mode
+ { .size = 2, .data = "\x11\xB8" },
+ { .size = 2, .data = "\x12\x60" },
+ { .size = 2, .data = "\x13\xA0" },
+ { .size = 2, .data = "\x14\x48" },
+ // PWM shutdown group register (0x19): no shutdown
+ { .size = 2, .data = "\x19\x00" },
+ // Input multiplexer register (0x20): BD mode
+ { .size = 2, .data = "\x20\x00\x89\x77\x72" },
+ // PWM output mux register (0x25)
+ // Channel 1 --> OUTA, channel 1 neg --> OUTB
+ // Channel 2 --> OUTC, channel 2 neg --> OUTD
+ { .size = 5, .data = "\x25\x01\x02\x13\x45" },
+ // DRC control (0x46): DRC off
+ { .size = 5, .data = "\x46\x00\x00\x00\x00" },
+ // BKND_ERR register (0x1C): 299ms reset period
+ { .size = 2, .data = "\x1C\x07" },
+ // Mute channel 3
+ { .size = 2, .data = "\x0A\xFF" },
+ // Volume configuration register (0x0E): volume slew 512 steps
+ { .size = 2, .data = "\x0E\x90" },
+ // Clock control register (0x00): 44/48kHz, MCLK=64xfs
+ { .size = 2, .data = "\x00\x60" },
+ // Bank switch and eq control (0x50): no bank switching
+ { .size = 5, .data = "\x50\x00\x00\x00\x00" },
+ // Volume registers (0x07, 0x08, 0x09, 0x0A)
+ { .size = 2, .data = "\x07\x20" },
+ { .size = 2, .data = "\x08\x30" },
+ { .size = 2, .data = "\x09\x30" },
+ { .size = 2, .data = "\x0A\xFF" },
+ // 0x72, 0x73, 0x76, 0x77 input mixer:
+ // no intermix between channels
+ { .size = 5, .data = "\x72\x00\x00\x00\x00" },
+ { .size = 5, .data = "\x73\x00\x80\x00\x00" },
+ { .size = 5, .data = "\x76\x00\x00\x00\x00" },
+ { .size = 5, .data = "\x77\x00\x80\x00\x00" },
+ // 0x70, 0x71, 0x74, 0x75 inline DRC mixer:
+ // no inline DRC inmix
+ { .size = 5, .data = "\x70\x00\x80\x00\x00" },
+ { .size = 5, .data = "\x71\x00\x00\x00\x00" },
+ { .size = 5, .data = "\x74\x00\x80\x00\x00" },
+ { .size = 5, .data = "\x75\x00\x00\x00\x00" },
+ // 0x56, 0x57 Output scale
+ { .size = 5, .data = "\x56\x00\x80\x00\x00" },
+ { .size = 5, .data = "\x57\x00\x02\x00\x00" },
+ // 0x3B, 0x3c
+ { .size = 9, .data = "\x3B\x00\x08\x00\x00\x00\x78\x00\x00" },
+ { .size = 9, .data = "\x3C\x00\x00\x01\x00\xFF\xFF\xFF\x00" },
+ { .size = 9, .data = "\x3E\x00\x08\x00\x00\x00\x78\x00\x00" },
+ { .size = 9, .data = "\x3F\x00\x00\x01\x00\xFF\xFF\xFF\x00" },
+ { .size = 9, .data = "\x40\x00\x00\x01\x00\xFF\xFF\xFF\x00" },
+ { .size = 9, .data = "\x43\x00\x00\x01\x00\xFF\xFF\xFF\x00" },
+ // 0x51, 0x52: output mixer
+ { .size = 9, .data = "\x51\x00\x80\x00\x00\x00\x00\x00\x00" },
+ { .size = 9, .data = "\x52\x00\x80\x00\x00\x00\x00\x00\x00" },
+ // PEQ defaults
+ { .size = 21, .data = "\x29\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+ { .size = 21, .data = "\x2A\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+ { .size = 21, .data = "\x2B\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+ { .size = 21, .data = "\x2C\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+ { .size = 21, .data = "\x2D\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+ { .size = 21, .data = "\x2E\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+ { .size = 21, .data = "\x2F\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+ { .size = 21, .data = "\x30\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+ { .size = 21, .data = "\x31\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+ { .size = 21, .data = "\x32\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+ { .size = 21, .data = "\x33\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+ { .size = 21, .data = "\x34\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+ { .size = 21, .data = "\x35\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+ { .size = 21, .data = "\x36\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+ { .size = 21, .data = "\x58\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+ { .size = 21, .data = "\x59\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+ { .size = 21, .data = "\x5C\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+ { .size = 21, .data = "\x5D\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+ { .size = 21, .data = "\x5E\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+ { .size = 21, .data = "\x5F\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+ { .size = 21, .data = "\x5A\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+ { .size = 21, .data = "\x5B\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
+};
+
+
+#endif /* _TAS5713_H */

807
target/linux/brcm2708/patches-4.9/0074-Revert-Added-driver-for-HiFiBerry-Amp-amplifier-add-.patch Normal file
View File

@ -0,0 +1,807 @@
From 321a000ddec470ccbe496e6ae2cdc65286d8f491 Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Mon, 12 Dec 2016 16:26:54 +0000
Subject: [PATCH] Revert "Added driver for HiFiBerry Amp amplifier add-on
board"
This reverts commit 3e6b00833d92a50cbcc9922deb6e1bc8fcdbb587.
---
sound/soc/bcm/Kconfig | 7 -
sound/soc/bcm/Makefile | 2 -
sound/soc/bcm/hifiberry_amp.c | 129 ---------------
sound/soc/codecs/Kconfig | 4 -
sound/soc/codecs/Makefile | 2 -
sound/soc/codecs/tas5713.c | 369 ------------------------------------------
sound/soc/codecs/tas5713.h | 210 ------------------------
7 files changed, 723 deletions(-)
delete mode 100644 sound/soc/bcm/hifiberry_amp.c
delete mode 100644 sound/soc/codecs/tas5713.c
delete mode 100644 sound/soc/codecs/tas5713.h
--- a/sound/soc/bcm/Kconfig
+++ b/sound/soc/bcm/Kconfig
@@ -38,13 +38,6 @@ config SND_BCM2708_SOC_HIFIBERRY_DIGI
help
Say Y or M if you want to add support for HifiBerry Digi S/PDIF output board.
-config SND_BCM2708_SOC_HIFIBERRY_AMP
- tristate "Support for the HifiBerry Amp"
- depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
- select SND_SOC_TAS5713
- help
- Say Y or M if you want to add support for the HifiBerry Amp amplifier board.
-
config SND_BCM2708_SOC_RPI_DAC
tristate "Support for RPi-DAC"
depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
--- a/sound/soc/bcm/Makefile
+++ b/sound/soc/bcm/Makefile
@@ -12,13 +12,11 @@ obj-$(CONFIG_SND_SOC_CYGNUS) += snd-soc-
snd-soc-hifiberry-dac-objs := hifiberry_dac.o
snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o
snd-soc-hifiberry-digi-objs := hifiberry_digi.o
-snd-soc-hifiberry-amp-objs := hifiberry_amp.o
snd-soc-rpi-dac-objs := rpi-dac.o
snd-soc-iqaudio-dac-objs := iqaudio-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) += snd-soc-hifiberry-digi.o
-obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP) += snd-soc-hifiberry-amp.o
obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
--- a/sound/soc/bcm/hifiberry_amp.c
+++ /dev/null
@@ -1,129 +0,0 @@
-/*
- * ASoC Driver for HifiBerry AMP
- *
- * Author: Sebastian Eickhoff <basti.eickhoff@googlemail.com>
- * Copyright 2014
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- */
-
-#include <linux/module.h>
-#include <linux/platform_device.h>
-
-#include <sound/core.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include <sound/soc.h>
-#include <sound/jack.h>
-
-static int snd_rpi_hifiberry_amp_init(struct snd_soc_pcm_runtime *rtd)
-{
- // ToDo: init of the dsp-registers.
- return 0;
-}
-
-static int snd_rpi_hifiberry_amp_hw_params( struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params )
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
-
- return snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
-}
-
-static struct snd_soc_ops snd_rpi_hifiberry_amp_ops = {
- .hw_params = snd_rpi_hifiberry_amp_hw_params,
-};
-
-static struct snd_soc_dai_link snd_rpi_hifiberry_amp_dai[] = {
- {
- .name = "HifiBerry AMP",
- .stream_name = "HifiBerry AMP HiFi",
- .cpu_dai_name = "bcm2708-i2s.0",
- .codec_dai_name = "tas5713-hifi",
- .platform_name = "bcm2708-i2s.0",
- .codec_name = "tas5713.1-001b",
- .dai_fmt = SND_SOC_DAIFMT_I2S |
- SND_SOC_DAIFMT_NB_NF |
- SND_SOC_DAIFMT_CBS_CFS,
- .ops = &snd_rpi_hifiberry_amp_ops,
- .init = snd_rpi_hifiberry_amp_init,
- },
-};
-
-
-static struct snd_soc_card snd_rpi_hifiberry_amp = {
- .name = "snd_rpi_hifiberry_amp",
- .driver_name = "HifiberryAmp",
- .owner = THIS_MODULE,
- .dai_link = snd_rpi_hifiberry_amp_dai,
- .num_links = ARRAY_SIZE(snd_rpi_hifiberry_amp_dai),
-};
-
-static const struct of_device_id snd_rpi_hifiberry_amp_of_match[] = {
- { .compatible = "hifiberry,hifiberry-amp", },
- {},
-};
-MODULE_DEVICE_TABLE(of, snd_rpi_hifiberry_amp_of_match);
-
-
-static int snd_rpi_hifiberry_amp_probe(struct platform_device *pdev)
-{
- int ret = 0;
-
- snd_rpi_hifiberry_amp.dev = &pdev->dev;
-
- if (pdev->dev.of_node) {
- struct device_node *i2s_node;
- struct snd_soc_dai_link *dai = &snd_rpi_hifiberry_amp_dai[0];
- i2s_node = of_parse_phandle(pdev->dev.of_node,
- "i2s-controller", 0);
-
- if (i2s_node) {
- dai->cpu_dai_name = NULL;
- dai->cpu_of_node = i2s_node;
- dai->platform_name = NULL;
- dai->platform_of_node = i2s_node;
- }
- }
-
- ret = snd_soc_register_card(&snd_rpi_hifiberry_amp);
-
- if (ret != 0) {
- dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret);
- }
-
- return ret;
-}
-
-
-static int snd_rpi_hifiberry_amp_remove(struct platform_device *pdev)
-{
- return snd_soc_unregister_card(&snd_rpi_hifiberry_amp);
-}
-
-
-static struct platform_driver snd_rpi_hifiberry_amp_driver = {
- .driver = {
- .name = "snd-hifiberry-amp",
- .owner = THIS_MODULE,
- .of_match_table = snd_rpi_hifiberry_amp_of_match,
- },
- .probe = snd_rpi_hifiberry_amp_probe,
- .remove = snd_rpi_hifiberry_amp_remove,
-};
-
-
-module_platform_driver(snd_rpi_hifiberry_amp_driver);
-
-
-MODULE_AUTHOR("Sebastian Eickhoff <basti.eickhoff@googlemail.com>");
-MODULE_DESCRIPTION("ASoC driver for HiFiBerry-AMP");
-MODULE_LICENSE("GPL v2");
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -139,7 +139,6 @@ config SND_SOC_ALL_CODECS
select SND_SOC_TFA9879 if I2C
select SND_SOC_TLV320AIC23_I2C if I2C
select SND_SOC_TLV320AIC23_SPI if SPI_MASTER
- select SND_SOC_TAS5713 if I2C
select SND_SOC_TLV320AIC26 if SPI_MASTER
select SND_SOC_TLV320AIC31XX if I2C
select SND_SOC_TLV320AIC32X4_I2C if I2C
@@ -822,9 +821,6 @@ config SND_SOC_TFA9879
tristate "NXP Semiconductors TFA9879 amplifier"
depends on I2C
-config SND_SOC_TAS5713
- tristate
-
config SND_SOC_TLV320AIC23
tristate
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -144,7 +144,6 @@ snd-soc-tas5086-objs := tas5086.o
snd-soc-tas571x-objs := tas571x.o
snd-soc-tas5720-objs := tas5720.o
snd-soc-tfa9879-objs := tfa9879.o
-snd-soc-tas5713-objs := tas5713.o
snd-soc-tlv320aic23-objs := tlv320aic23.o
snd-soc-tlv320aic23-i2c-objs := tlv320aic23-i2c.o
snd-soc-tlv320aic23-spi-objs := tlv320aic23-spi.o
@@ -367,7 +366,6 @@ obj-$(CONFIG_SND_SOC_TAS5086) += snd-soc
obj-$(CONFIG_SND_SOC_TAS571X) += snd-soc-tas571x.o
obj-$(CONFIG_SND_SOC_TAS5720) += snd-soc-tas5720.o
obj-$(CONFIG_SND_SOC_TFA9879) += snd-soc-tfa9879.o
-obj-$(CONFIG_SND_SOC_TAS5713) += snd-soc-tas5713.o
obj-$(CONFIG_SND_SOC_TLV320AIC23) += snd-soc-tlv320aic23.o
obj-$(CONFIG_SND_SOC_TLV320AIC23_I2C) += snd-soc-tlv320aic23-i2c.o
obj-$(CONFIG_SND_SOC_TLV320AIC23_SPI) += snd-soc-tlv320aic23-spi.o
--- a/sound/soc/codecs/tas5713.c
+++ /dev/null
@@ -1,369 +0,0 @@
-/*
- * ASoC Driver for TAS5713
- *
- * Author: Sebastian Eickhoff <basti.eickhoff@googlemail.com>
- * Copyright 2014
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- */
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/pm.h>
-#include <linux/i2c.h>
-#include <linux/of_device.h>
-#include <linux/spi/spi.h>
-#include <linux/regmap.h>
-#include <linux/regulator/consumer.h>
-#include <linux/slab.h>
-#include <sound/core.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include <sound/soc.h>
-#include <sound/initval.h>
-#include <sound/tlv.h>
-
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/fs.h>
-#include <asm/uaccess.h>
-
-#include "tas5713.h"
-
-
-static struct i2c_client *i2c;
-
-struct tas5713_priv {
- struct regmap *regmap;
- int mclk_div;
- struct snd_soc_codec *codec;
-};
-
-static struct tas5713_priv *priv_data;
-
-
-
-
-/*
- * _ _ ___ _ ___ _ _
- * /_\ | | / __| /_\ / __|___ _ _| |_ _ _ ___| |___
- * / _ \| |__\__ \/ _ \ | (__/ _ \ ' \ _| '_/ _ \ (_-<
- * /_/ \_\____|___/_/ \_\ \___\___/_||_\__|_| \___/_/__/
- *
- */
-
-static const DECLARE_TLV_DB_SCALE(tas5713_vol_tlv, -10000, 50, 1);
-
-
-static const struct snd_kcontrol_new tas5713_snd_controls[] = {
- SOC_SINGLE_TLV ("Master" , TAS5713_VOL_MASTER, 0, 248, 1, tas5713_vol_tlv),
- SOC_DOUBLE_R_TLV("Channels" , TAS5713_VOL_CH1, TAS5713_VOL_CH2, 0, 248, 1, tas5713_vol_tlv)
-};
-
-
-
-
-/*
- * __ __ _ _ ___ _
- * | \/ |__ _ __| |_ (_)_ _ ___ | \ _ _(_)_ _____ _ _
- * | |\/| / _` / _| ' \| | ' \/ -_) | |) | '_| \ V / -_) '_|
- * |_| |_\__,_\__|_||_|_|_||_\___| |___/|_| |_|\_/\___|_|
- *
- */
-
-static int tas5713_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params,
- struct snd_soc_dai *dai)
-{
- u16 blen = 0x00;
-
- struct snd_soc_codec *codec;
- codec = dai->codec;
- priv_data->codec = dai->codec;
-
- switch (params_format(params)) {
- case SNDRV_PCM_FORMAT_S16_LE:
- blen = 0x03;
- break;
- case SNDRV_PCM_FORMAT_S20_3LE:
- blen = 0x1;
- break;
- case SNDRV_PCM_FORMAT_S24_LE:
- blen = 0x04;
- break;
- case SNDRV_PCM_FORMAT_S32_LE:
- blen = 0x05;
- break;
- default:
- dev_err(dai->dev, "Unsupported word length: %u\n",
- params_format(params));
- return -EINVAL;
- }
-
- // set word length
- snd_soc_update_bits(codec, TAS5713_SERIAL_DATA_INTERFACE, 0x7, blen);
-
- return 0;
-}
-
-
-static int tas5713_mute_stream(struct snd_soc_dai *dai, int mute, int stream)
-{
- unsigned int val = 0;
-
- struct tas5713_priv *tas5713;
- struct snd_soc_codec *codec = dai->codec;
- tas5713 = snd_soc_codec_get_drvdata(codec);
-
- if (mute) {
- val = TAS5713_SOFT_MUTE_ALL;
- }
-
- return regmap_write(tas5713->regmap, TAS5713_SOFT_MUTE, val);
-}
-
-
-static const struct snd_soc_dai_ops tas5713_dai_ops = {
- .hw_params = tas5713_hw_params,
- .mute_stream = tas5713_mute_stream,
-};
-
-
-static struct snd_soc_dai_driver tas5713_dai = {
- .name = "tas5713-hifi",
- .playback = {
- .stream_name = "Playback",
- .channels_min = 2,
- .channels_max = 2,
- .rates = SNDRV_PCM_RATE_8000_48000,
- .formats = (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE ),
- },
- .ops = &tas5713_dai_ops,
-};
-
-
-
-
-/*
- * ___ _ ___ _
- * / __|___ __| |___ __ | \ _ _(_)_ _____ _ _
- * | (__/ _ \/ _` / -_) _| | |) | '_| \ V / -_) '_|
- * \___\___/\__,_\___\__| |___/|_| |_|\_/\___|_|
- *
- */
-
-static int tas5713_remove(struct snd_soc_codec *codec)
-{
- struct tas5713_priv *tas5713;
-
- tas5713 = snd_soc_codec_get_drvdata(codec);
-
- return 0;
-}
-
-
-static int tas5713_probe(struct snd_soc_codec *codec)
-{
- struct tas5713_priv *tas5713;
- int i, ret;
-
- i2c = container_of(codec->dev, struct i2c_client, dev);
-
- tas5713 = snd_soc_codec_get_drvdata(codec);
-
- // Reset error
- ret = snd_soc_write(codec, TAS5713_ERROR_STATUS, 0x00);
- if (ret < 0) return ret;
-
- // Trim oscillator
- ret = snd_soc_write(codec, TAS5713_OSC_TRIM, 0x00);
- if (ret < 0) return ret;
- msleep(1000);
-
- // Reset error
- ret = snd_soc_write(codec, TAS5713_ERROR_STATUS, 0x00);
- if (ret < 0) return ret;
-
- // Clock mode: 44/48kHz, MCLK=64xfs
- ret = snd_soc_write(codec, TAS5713_CLOCK_CTRL, 0x60);
- if (ret < 0) return ret;
-
- // I2S 24bit
- ret = snd_soc_write(codec, TAS5713_SERIAL_DATA_INTERFACE, 0x05);
- if (ret < 0) return ret;
-
- // Unmute
- ret = snd_soc_write(codec, TAS5713_SYSTEM_CTRL2, 0x00);
- if (ret < 0) return ret;
- ret = snd_soc_write(codec, TAS5713_SOFT_MUTE, 0x00);
- if (ret < 0) return ret;
-
- // Set volume to 0db
- ret = snd_soc_write(codec, TAS5713_VOL_MASTER, 0x00);
- if (ret < 0) return ret;
-
- // Now start programming the default initialization sequence
- for (i = 0; i < ARRAY_SIZE(tas5713_init_sequence); ++i) {
- ret = i2c_master_send(i2c,
- tas5713_init_sequence[i].data,
- tas5713_init_sequence[i].size);
- if (ret < 0) {
- printk(KERN_INFO "TAS5713 CODEC PROBE: InitSeq returns: %d\n", ret);
- }
- }
-
- // Unmute
- ret = snd_soc_write(codec, TAS5713_SYSTEM_CTRL2, 0x00);
- if (ret < 0) return ret;
-
- return 0;
-}
-
-
-static struct snd_soc_codec_driver soc_codec_dev_tas5713 = {
- .probe = tas5713_probe,
- .remove = tas5713_remove,
- .controls = tas5713_snd_controls,
- .num_controls = ARRAY_SIZE(tas5713_snd_controls),
-};
-
-
-
-
-/*
- * ___ ___ ___ ___ _
- * |_ _|_ ) __| | \ _ _(_)_ _____ _ _
- * | | / / (__ | |) | '_| \ V / -_) '_|
- * |___/___\___| |___/|_| |_|\_/\___|_|
- *
- */
-
-static const struct reg_default tas5713_reg_defaults[] = {
- { 0x07 ,0x80 }, // R7 - VOL_MASTER - -40dB
- { 0x08 , 30 }, // R8 - VOL_CH1 - 0dB
- { 0x09 , 30 }, // R9 - VOL_CH2 - 0dB
- { 0x0A ,0x80 }, // R10 - VOL_HEADPHONE - -40dB
-};
-
-
-static bool tas5713_reg_volatile(struct device *dev, unsigned int reg)
-{
- switch (reg) {
- case TAS5713_DEVICE_ID:
- case TAS5713_ERROR_STATUS:
- return true;
- default:
- return false;
- }
-}
-
-
-static const struct of_device_id tas5713_of_match[] = {
- { .compatible = "ti,tas5713", },
- { }
-};
-MODULE_DEVICE_TABLE(of, tas5713_of_match);
-
-
-static struct regmap_config tas5713_regmap_config = {
- .reg_bits = 8,
- .val_bits = 8,
-
- .max_register = TAS5713_MAX_REGISTER,
- .volatile_reg = tas5713_reg_volatile,
-
- .cache_type = REGCACHE_RBTREE,
- .reg_defaults = tas5713_reg_defaults,
- .num_reg_defaults = ARRAY_SIZE(tas5713_reg_defaults),
-};
-
-
-static int tas5713_i2c_probe(struct i2c_client *i2c,
- const struct i2c_device_id *id)
-{
- int ret;
-
- priv_data = devm_kzalloc(&i2c->dev, sizeof *priv_data, GFP_KERNEL);
- if (!priv_data)
- return -ENOMEM;
-
- priv_data->regmap = devm_regmap_init_i2c(i2c, &tas5713_regmap_config);
- if (IS_ERR(priv_data->regmap)) {
- ret = PTR_ERR(priv_data->regmap);
- return ret;
- }
-
- i2c_set_clientdata(i2c, priv_data);
-
- ret = snd_soc_register_codec(&i2c->dev,
- &soc_codec_dev_tas5713, &tas5713_dai, 1);
-
- return ret;
-}
-
-
-static int tas5713_i2c_remove(struct i2c_client *i2c)
-{
- snd_soc_unregister_codec(&i2c->dev);
- i2c_set_clientdata(i2c, NULL);
-
- kfree(priv_data);
-
- return 0;
-}
-
-
-static const struct i2c_device_id tas5713_i2c_id[] = {
- { "tas5713", 0 },
- { }
-};
-
-MODULE_DEVICE_TABLE(i2c, tas5713_i2c_id);
-
-
-static struct i2c_driver tas5713_i2c_driver = {
- .driver = {
- .name = "tas5713",
- .owner = THIS_MODULE,
- .of_match_table = tas5713_of_match,
- },
- .probe = tas5713_i2c_probe,
- .remove = tas5713_i2c_remove,
- .id_table = tas5713_i2c_id
-};
-
-
-static int __init tas5713_modinit(void)
-{
- int ret = 0;
-
- ret = i2c_add_driver(&tas5713_i2c_driver);
- if (ret) {
- printk(KERN_ERR "Failed to register tas5713 I2C driver: %d\n",
- ret);
- }
-
- return ret;
-}
-module_init(tas5713_modinit);
-
-
-static void __exit tas5713_exit(void)
-{
- i2c_del_driver(&tas5713_i2c_driver);
-}
-module_exit(tas5713_exit);
-
-
-MODULE_AUTHOR("Sebastian Eickhoff <basti.eickhoff@googlemail.com>");
-MODULE_DESCRIPTION("ASoC driver for TAS5713");
-MODULE_LICENSE("GPL v2");
--- a/sound/soc/codecs/tas5713.h
+++ /dev/null
@@ -1,210 +0,0 @@
-/*
- * ASoC Driver for TAS5713
- *
- * Author: Sebastian Eickhoff <basti.eickhoff@googlemail.com>
- * Copyright 2014
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- */
-
-#ifndef _TAS5713_H
-#define _TAS5713_H
-
-
-// TAS5713 I2C-bus register addresses
-
-#define TAS5713_CLOCK_CTRL 0x00
-#define TAS5713_DEVICE_ID 0x01
-#define TAS5713_ERROR_STATUS 0x02
-#define TAS5713_SYSTEM_CTRL1 0x03
-#define TAS5713_SERIAL_DATA_INTERFACE 0x04
-#define TAS5713_SYSTEM_CTRL2 0x05
-#define TAS5713_SOFT_MUTE 0x06
-#define TAS5713_VOL_MASTER 0x07
-#define TAS5713_VOL_CH1 0x08
-#define TAS5713_VOL_CH2 0x09
-#define TAS5713_VOL_HEADPHONE 0x0A
-#define TAS5713_VOL_CONFIG 0x0E
-#define TAS5713_MODULATION_LIMIT 0x10
-#define TAS5713_IC_DLY_CH1 0x11
-#define TAS5713_IC_DLY_CH2 0x12
-#define TAS5713_IC_DLY_CH3 0x13
-#define TAS5713_IC_DLY_CH4 0x14
-
-#define TAS5713_START_STOP_PERIOD 0x1A
-#define TAS5713_OSC_TRIM 0x1B
-#define TAS5713_BKND_ERR 0x1C
-
-#define TAS5713_INPUT_MUX 0x20
-#define TAS5713_SRC_SELECT_CH4 0x21
-#define TAS5713_PWM_MUX 0x25
-
-#define TAS5713_CH1_BQ0 0x29
-#define TAS5713_CH1_BQ1 0x2A
-#define TAS5713_CH1_BQ2 0x2B
-#define TAS5713_CH1_BQ3 0x2C
-#define TAS5713_CH1_BQ4 0x2D
-#define TAS5713_CH1_BQ5 0x2E
-#define TAS5713_CH1_BQ6 0x2F
-#define TAS5713_CH1_BQ7 0x58
-#define TAS5713_CH1_BQ8 0x59
-
-#define TAS5713_CH2_BQ0 0x30
-#define TAS5713_CH2_BQ1 0x31
-#define TAS5713_CH2_BQ2 0x32
-#define TAS5713_CH2_BQ3 0x33
-#define TAS5713_CH2_BQ4 0x34
-#define TAS5713_CH2_BQ5 0x35
-#define TAS5713_CH2_BQ6 0x36
-#define TAS5713_CH2_BQ7 0x5C
-#define TAS5713_CH2_BQ8 0x5D
-
-#define TAS5713_CH4_BQ0 0x5A
-#define TAS5713_CH4_BQ1 0x5B
-#define TAS5713_CH3_BQ0 0x5E
-#define TAS5713_CH3_BQ1 0x5F
-
-#define TAS5713_DRC1_SOFTENING_FILTER_ALPHA_OMEGA 0x3B
-#define TAS5713_DRC1_ATTACK_RELEASE_RATE 0x3C
-#define TAS5713_DRC2_SOFTENING_FILTER_ALPHA_OMEGA 0x3E
-#define TAS5713_DRC2_ATTACK_RELEASE_RATE 0x3F
-#define TAS5713_DRC1_ATTACK_RELEASE_THRES 0x40
-#define TAS5713_DRC2_ATTACK_RELEASE_THRES 0x43
-#define TAS5713_DRC_CTRL 0x46
-
-#define TAS5713_BANK_SW_CTRL 0x50
-#define TAS5713_CH1_OUTPUT_MIXER 0x51
-#define TAS5713_CH2_OUTPUT_MIXER 0x52
-#define TAS5713_CH1_INPUT_MIXER 0x53
-#define TAS5713_CH2_INPUT_MIXER 0x54
-#define TAS5713_OUTPUT_POST_SCALE 0x56
-#define TAS5713_OUTPUT_PRESCALE 0x57
-
-#define TAS5713_IDF_POST_SCALE 0x62
-
-#define TAS5713_CH1_INLINE_MIXER 0x70
-#define TAS5713_CH1_INLINE_DRC_EN_MIXER 0x71
-#define TAS5713_CH1_R_CHANNEL_MIXER 0x72
-#define TAS5713_CH1_L_CHANNEL_MIXER 0x73
-#define TAS5713_CH2_INLINE_MIXER 0x74
-#define TAS5713_CH2_INLINE_DRC_EN_MIXER 0x75
-#define TAS5713_CH2_L_CHANNEL_MIXER 0x76
-#define TAS5713_CH2_R_CHANNEL_MIXER 0x77
-
-#define TAS5713_UPDATE_DEV_ADDR_KEY 0xF8
-#define TAS5713_UPDATE_DEV_ADDR_REG 0xF9
-
-#define TAS5713_REGISTER_COUNT 0x46
-#define TAS5713_MAX_REGISTER 0xF9
-
-
-// Bitmasks for registers
-#define TAS5713_SOFT_MUTE_ALL 0x07
-
-
-
-struct tas5713_init_command {
- const int size;
- const char *const data;
-};
-
-static const struct tas5713_init_command tas5713_init_sequence[] = {
-
- // Trim oscillator
- { .size = 2, .data = "\x1B\x00" },
- // System control register 1 (0x03): block DC
- { .size = 2, .data = "\x03\x80" },
- // Mute everything
- { .size = 2, .data = "\x05\x40" },
- // Modulation limit register (0x10): 97.7%
- { .size = 2, .data = "\x10\x02" },
- // Interchannel delay registers
- // (0x11, 0x12, 0x13, and 0x14): BD mode
- { .size = 2, .data = "\x11\xB8" },
- { .size = 2, .data = "\x12\x60" },
- { .size = 2, .data = "\x13\xA0" },
- { .size = 2, .data = "\x14\x48" },
- // PWM shutdown group register (0x19): no shutdown
- { .size = 2, .data = "\x19\x00" },
- // Input multiplexer register (0x20): BD mode
- { .size = 2, .data = "\x20\x00\x89\x77\x72" },
- // PWM output mux register (0x25)
- // Channel 1 --> OUTA, channel 1 neg --> OUTB
- // Channel 2 --> OUTC, channel 2 neg --> OUTD
- { .size = 5, .data = "\x25\x01\x02\x13\x45" },
- // DRC control (0x46): DRC off
- { .size = 5, .data = "\x46\x00\x00\x00\x00" },
- // BKND_ERR register (0x1C): 299ms reset period
- { .size = 2, .data = "\x1C\x07" },
- // Mute channel 3
- { .size = 2, .data = "\x0A\xFF" },
- // Volume configuration register (0x0E): volume slew 512 steps
- { .size = 2, .data = "\x0E\x90" },
- // Clock control register (0x00): 44/48kHz, MCLK=64xfs
- { .size = 2, .data = "\x00\x60" },
- // Bank switch and eq control (0x50): no bank switching
- { .size = 5, .data = "\x50\x00\x00\x00\x00" },
- // Volume registers (0x07, 0x08, 0x09, 0x0A)
- { .size = 2, .data = "\x07\x20" },
- { .size = 2, .data = "\x08\x30" },
- { .size = 2, .data = "\x09\x30" },
- { .size = 2, .data = "\x0A\xFF" },
- // 0x72, 0x73, 0x76, 0x77 input mixer:
- // no intermix between channels
- { .size = 5, .data = "\x72\x00\x00\x00\x00" },
- { .size = 5, .data = "\x73\x00\x80\x00\x00" },
- { .size = 5, .data = "\x76\x00\x00\x00\x00" },
- { .size = 5, .data = "\x77\x00\x80\x00\x00" },
- // 0x70, 0x71, 0x74, 0x75 inline DRC mixer:
- // no inline DRC inmix
- { .size = 5, .data = "\x70\x00\x80\x00\x00" },
- { .size = 5, .data = "\x71\x00\x00\x00\x00" },
- { .size = 5, .data = "\x74\x00\x80\x00\x00" },
- { .size = 5, .data = "\x75\x00\x00\x00\x00" },
- // 0x56, 0x57 Output scale
- { .size = 5, .data = "\x56\x00\x80\x00\x00" },
- { .size = 5, .data = "\x57\x00\x02\x00\x00" },
- // 0x3B, 0x3c
- { .size = 9, .data = "\x3B\x00\x08\x00\x00\x00\x78\x00\x00" },
- { .size = 9, .data = "\x3C\x00\x00\x01\x00\xFF\xFF\xFF\x00" },
- { .size = 9, .data = "\x3E\x00\x08\x00\x00\x00\x78\x00\x00" },
- { .size = 9, .data = "\x3F\x00\x00\x01\x00\xFF\xFF\xFF\x00" },
- { .size = 9, .data = "\x40\x00\x00\x01\x00\xFF\xFF\xFF\x00" },
- { .size = 9, .data = "\x43\x00\x00\x01\x00\xFF\xFF\xFF\x00" },
- // 0x51, 0x52: output mixer
- { .size = 9, .data = "\x51\x00\x80\x00\x00\x00\x00\x00\x00" },
- { .size = 9, .data = "\x52\x00\x80\x00\x00\x00\x00\x00\x00" },
- // PEQ defaults
- { .size = 21, .data = "\x29\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
- { .size = 21, .data = "\x2A\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
- { .size = 21, .data = "\x2B\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
- { .size = 21, .data = "\x2C\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
- { .size = 21, .data = "\x2D\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
- { .size = 21, .data = "\x2E\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
- { .size = 21, .data = "\x2F\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
- { .size = 21, .data = "\x30\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
- { .size = 21, .data = "\x31\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
- { .size = 21, .data = "\x32\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
- { .size = 21, .data = "\x33\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
- { .size = 21, .data = "\x34\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
- { .size = 21, .data = "\x35\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
- { .size = 21, .data = "\x36\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
- { .size = 21, .data = "\x58\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
- { .size = 21, .data = "\x59\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
- { .size = 21, .data = "\x5C\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
- { .size = 21, .data = "\x5D\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
- { .size = 21, .data = "\x5E\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
- { .size = 21, .data = "\x5F\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
- { .size = 21, .data = "\x5A\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
- { .size = 21, .data = "\x5B\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" },
-};
-
-
-#endif /* _TAS5713_H */

27
target/linux/brcm2708/patches-4.9/0075-Update-ds1307-driver-for-device-tree-support.patch Normal file
View File

@ -0,0 +1,27 @@
From 682c095597876ff7d669f92dc2a0f1f49526444c Mon Sep 17 00:00:00 2001
From: Ryan Coe <bluemrp9@gmail.com>
Date: Sat, 31 Jan 2015 18:25:49 -0700
Subject: [PATCH] Update ds1307 driver for device-tree support
Signed-off-by: Ryan Coe <bluemrp9@gmail.com>
---
drivers/rtc/rtc-ds1307.c | 8 ++++++++
1 file changed, 8 insertions(+)
--- a/drivers/rtc/rtc-ds1307.c
+++ b/drivers/rtc/rtc-ds1307.c
@@ -1675,6 +1675,14 @@ static int ds1307_remove(struct i2c_clie
return 0;
}
+#ifdef CONFIG_OF
+static const struct of_device_id ds1307_of_match[] = {
+ { .compatible = "maxim,ds1307" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, ds1307_of_match);
+#endif
+
static struct i2c_driver ds1307_driver = {
.driver = {
.name = "rtc-ds1307",

210
target/linux/brcm2708/patches-4.9/0076-Add-driver-for-rpi-proto.patch Normal file
View File

@ -0,0 +1,210 @@
From 001f8b8dc231bf3e20fd6802e2664788891ed8c4 Mon Sep 17 00:00:00 2001
From: Waldemar Brodkorb <wbrodkorb@conet.de>
Date: Wed, 25 Mar 2015 09:26:17 +0100
Subject: [PATCH] Add driver for rpi-proto
Forward port of 3.10.x driver from https://github.com/koalo
We are using a custom board and would like to use rpi 3.18.x
kernel. Patch works fine for our embedded system.
URL to the audio chip:
http://www.mikroe.com/add-on-boards/audio-voice/audio-codec-proto/
Playback tested with devicetree enabled.
Signed-off-by: Waldemar Brodkorb <wbrodkorb@conet.de>
---
sound/soc/bcm/Kconfig | 7 +++
sound/soc/bcm/Makefile | 2 +
sound/soc/bcm/rpi-proto.c | 154 ++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 163 insertions(+)
create mode 100644 sound/soc/bcm/rpi-proto.c
--- a/sound/soc/bcm/Kconfig
+++ b/sound/soc/bcm/Kconfig
@@ -45,6 +45,13 @@ config SND_BCM2708_SOC_RPI_DAC
help
Say Y or M if you want to add support for RPi-DAC.
+config SND_BCM2708_SOC_RPI_PROTO
+ tristate "Support for Rpi-PROTO"
+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+ select SND_SOC_WM8731
+ help
+ Say Y or M if you want to add support for Audio Codec Board PROTO (WM8731).
+
config SND_BCM2708_SOC_IQAUDIO_DAC
tristate "Support for IQaudIO-DAC"
depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
--- a/sound/soc/bcm/Makefile
+++ b/sound/soc/bcm/Makefile
@@ -13,10 +13,12 @@ snd-soc-hifiberry-dac-objs := hifiberry_
snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o
snd-soc-hifiberry-digi-objs := hifiberry_digi.o
snd-soc-rpi-dac-objs := rpi-dac.o
+snd-soc-rpi-proto-objs := rpi-proto.o
snd-soc-iqaudio-dac-objs := iqaudio-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) += snd-soc-hifiberry-digi.o
obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
+obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o
obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
--- /dev/null
+++ b/sound/soc/bcm/rpi-proto.c
@@ -0,0 +1,154 @@
+/*
+ * ASoC driver for PROTO AudioCODEC (with a WM8731)
+ * connected to a Raspberry Pi
+ *
+ * Author: Florian Meier, <koalo@koalo.de>
+ * Copyright 2013
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+
+#include "../codecs/wm8731.h"
+
+static const unsigned int wm8731_rates_12288000[] = {
+ 8000, 32000, 48000, 96000,
+};
+
+static struct snd_pcm_hw_constraint_list wm8731_constraints_12288000 = {
+ .list = wm8731_rates_12288000,
+ .count = ARRAY_SIZE(wm8731_rates_12288000),
+};
+
+static int snd_rpi_proto_startup(struct snd_pcm_substream *substream)
+{
+ /* Setup constraints, because there is a 12.288 MHz XTAL on the board */
+ snd_pcm_hw_constraint_list(substream->runtime, 0,
+ SNDRV_PCM_HW_PARAM_RATE,
+ &wm8731_constraints_12288000);
+ return 0;
+}
+
+static int snd_rpi_proto_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_codec *codec = rtd->codec;
+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+ int sysclk = 12288000; /* This is fixed on this board */
+
+ /* Set proto bclk */
+ int ret = snd_soc_dai_set_bclk_ratio(cpu_dai,32*2);
+ if (ret < 0){
+ dev_err(codec->dev,
+ "Failed to set BCLK ratio %d\n", ret);
+ return ret;
+ }
+
+ /* Set proto sysclk */
+ ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_XTAL,
+ sysclk, SND_SOC_CLOCK_IN);
+ if (ret < 0) {
+ dev_err(codec->dev,
+ "Failed to set WM8731 SYSCLK: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+/* machine stream operations */
+static struct snd_soc_ops snd_rpi_proto_ops = {
+ .startup = snd_rpi_proto_startup,
+ .hw_params = snd_rpi_proto_hw_params,
+};
+
+static struct snd_soc_dai_link snd_rpi_proto_dai[] = {
+{
+ .name = "WM8731",
+ .stream_name = "WM8731 HiFi",
+ .cpu_dai_name = "bcm2708-i2s.0",
+ .codec_dai_name = "wm8731-hifi",
+ .platform_name = "bcm2708-i2s.0",
+ .codec_name = "wm8731.1-001a",
+ .dai_fmt = SND_SOC_DAIFMT_I2S
+ | SND_SOC_DAIFMT_NB_NF
+ | SND_SOC_DAIFMT_CBM_CFM,
+ .ops = &snd_rpi_proto_ops,
+},
+};
+
+/* audio machine driver */
+static struct snd_soc_card snd_rpi_proto = {
+ .name = "snd_rpi_proto",
+ .owner = THIS_MODULE,
+ .dai_link = snd_rpi_proto_dai,
+ .num_links = ARRAY_SIZE(snd_rpi_proto_dai),
+};
+
+static int snd_rpi_proto_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+
+ snd_rpi_proto.dev = &pdev->dev;
+
+ if (pdev->dev.of_node) {
+ struct device_node *i2s_node;
+ struct snd_soc_dai_link *dai = &snd_rpi_proto_dai[0];
+ i2s_node = of_parse_phandle(pdev->dev.of_node,
+ "i2s-controller", 0);
+
+ if (i2s_node) {
+ dai->cpu_dai_name = NULL;
+ dai->cpu_of_node = i2s_node;
+ dai->platform_name = NULL;
+ dai->platform_of_node = i2s_node;
+ }
+ }
+
+ ret = snd_soc_register_card(&snd_rpi_proto);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "snd_soc_register_card() failed: %d\n", ret);
+ }
+
+ return ret;
+}
+
+
+static int snd_rpi_proto_remove(struct platform_device *pdev)
+{
+ return snd_soc_unregister_card(&snd_rpi_proto);
+}
+
+static const struct of_device_id snd_rpi_proto_of_match[] = {
+ { .compatible = "rpi,rpi-proto", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, snd_rpi_proto_of_match);
+
+static struct platform_driver snd_rpi_proto_driver = {
+ .driver = {
+ .name = "snd-rpi-proto",
+ .owner = THIS_MODULE,
+ .of_match_table = snd_rpi_proto_of_match,
+ },
+ .probe = snd_rpi_proto_probe,
+ .remove = snd_rpi_proto_remove,
+};
+
+module_platform_driver(snd_rpi_proto_driver);
+
+MODULE_AUTHOR("Florian Meier");
+MODULE_DESCRIPTION("ASoC Driver for Raspberry Pi connected to PROTO board (WM8731)");
+MODULE_LICENSE("GPL");

238
target/linux/brcm2708/patches-4.9/0077-RaspiDAC3-support.patch Normal file
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@ -0,0 +1,238 @@
From 26084a968083e88298416426576dbd4c006e5dea Mon Sep 17 00:00:00 2001
From: Jan Grulich <jan@grulich.eu>
Date: Mon, 24 Aug 2015 16:03:47 +0100
Subject: [PATCH] RaspiDAC3 support
Signed-off-by: Jan Grulich <jan@grulich.eu>
config: fix RaspiDAC Rev.3x dependencies
Change depends to SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
like the other I2S soundcard drivers.
Signed-off-by: Matthias Reichl <hias@horus.com>
---
sound/soc/bcm/Kconfig | 8 ++
sound/soc/bcm/Makefile | 2 +
sound/soc/bcm/raspidac3.c | 186 ++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 196 insertions(+)
create mode 100644 sound/soc/bcm/raspidac3.c
--- a/sound/soc/bcm/Kconfig
+++ b/sound/soc/bcm/Kconfig
@@ -58,3 +58,11 @@ config SND_BCM2708_SOC_IQAUDIO_DAC
select SND_SOC_PCM512x_I2C
help
Say Y or M if you want to add support for IQaudIO-DAC.
+
+config SND_BCM2708_SOC_RASPIDAC3
+ tristate "Support for RaspiDAC Rev.3x"
+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+ select SND_SOC_PCM512x_I2C
+ select SND_SOC_TPA6130A2
+ help
+ Say Y or M if you want to add support for RaspiDAC Rev.3x.
--- a/sound/soc/bcm/Makefile
+++ b/sound/soc/bcm/Makefile
@@ -15,6 +15,7 @@ snd-soc-hifiberry-digi-objs := hifiberry
snd-soc-rpi-dac-objs := rpi-dac.o
snd-soc-rpi-proto-objs := rpi-proto.o
snd-soc-iqaudio-dac-objs := iqaudio-dac.o
+snd-soc-raspidac3-objs := raspidac3.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
@@ -22,3 +23,4 @@ obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_D
obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o
obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
+obj-$(CONFIG_SND_BCM2708_SOC_RASPIDAC3) += snd-soc-raspidac3.o
--- /dev/null
+++ b/sound/soc/bcm/raspidac3.c
@@ -0,0 +1,186 @@
+/*
+ * ASoC Driver for RaspiDAC v3
+ *
+ * Author: Jan Grulich <jan@grulich.eu>
+ * Copyright 2015
+ * based on code by Daniel Matuschek <daniel@hifiberry.com>
+ * based on code by Florian Meier <florian.meier@koalo.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+#include <sound/soc-dapm.h>
+
+#include "../codecs/pcm512x.h"
+#include "../codecs/tpa6130a2.h"
+
+/* sound card init */
+static int snd_rpi_raspidac3_init(struct snd_soc_pcm_runtime *rtd)
+{
+ int ret;
+ struct snd_soc_card *card = rtd->card;
+ struct snd_soc_codec *codec = rtd->codec;
+ snd_soc_update_bits(codec, PCM512x_GPIO_EN, 0x08, 0x08);
+ snd_soc_update_bits(codec, PCM512x_GPIO_OUTPUT_4, 0xf, 0x02);
+ snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x00);
+
+ ret = snd_soc_limit_volume(card, "Digital Playback Volume", 207);
+ if (ret < 0)
+ dev_warn(card->dev, "Failed to set volume limit: %d\n", ret);
+ else {
+ struct snd_kcontrol *kctl;
+
+ ret = snd_soc_limit_volume(card,
+ "TPA6130A2 Headphone Playback Volume",
+ 54);
+ if (ret < 0)
+ dev_warn(card->dev, "Failed to set TPA6130A2 volume limit: %d\n",
+ ret);
+ kctl = snd_soc_card_get_kcontrol(card,
+ "TPA6130A2 Headphone Playback Volume");
+ if (kctl) {
+ strcpy(kctl->id.name, "Headphones Playback Volume");
+ /* disable the volume dB scale so alsamixer works */
+ kctl->vd[0].access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
+ }
+
+ kctl = snd_soc_card_get_kcontrol(card,
+ "TPA6130A2 Headphone Playback Switch");
+ if (kctl)
+ strcpy(kctl->id.name, "Headphones Playback Switch");
+ }
+
+ return 0;
+}
+
+/* set hw parameters */
+static int snd_rpi_raspidac3_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+
+ unsigned int sample_bits =
+ snd_pcm_format_physical_width(params_format(params));
+
+ return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2);
+}
+
+/* startup */
+static int snd_rpi_raspidac3_startup(struct snd_pcm_substream *substream) {
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_codec *codec = rtd->codec;
+ snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x08);
+ return 0;
+}
+
+/* shutdown */
+static void snd_rpi_raspidac3_shutdown(struct snd_pcm_substream *substream) {
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_codec *codec = rtd->codec;
+ snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x00);
+}
+
+/* machine stream operations */
+static struct snd_soc_ops snd_rpi_raspidac3_ops = {
+ .hw_params = snd_rpi_raspidac3_hw_params,
+ .startup = snd_rpi_raspidac3_startup,
+ .shutdown = snd_rpi_raspidac3_shutdown,
+};
+
+/* interface setup */
+static struct snd_soc_dai_link snd_rpi_raspidac3_dai[] = {
+{
+ .name = "RaspiDAC Rev.3x",
+ .stream_name = "RaspiDAC HiFi",
+ .cpu_dai_name = "bcm2708-i2s.0",
+ .codec_dai_name = "pcm512x-hifi",
+ .platform_name = "bcm2708-i2s.0",
+ .codec_name = "pcm512x.1-004c",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS,
+ .ops = &snd_rpi_raspidac3_ops,
+ .init = snd_rpi_raspidac3_init,
+},
+};
+
+/* audio machine driver */
+static struct snd_soc_card snd_rpi_raspidac3 = {
+ .name = "RaspiDAC Rev.3x HiFi Audio Card",
+ .owner = THIS_MODULE,
+ .dai_link = snd_rpi_raspidac3_dai,
+ .num_links = ARRAY_SIZE(snd_rpi_raspidac3_dai),
+};
+
+/* sound card test */
+static int snd_rpi_raspidac3_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+
+ snd_rpi_raspidac3.dev = &pdev->dev;
+
+ if (pdev->dev.of_node) {
+ struct device_node *i2s_node;
+ struct snd_soc_dai_link *dai = &snd_rpi_raspidac3_dai[0];
+ i2s_node = of_parse_phandle(pdev->dev.of_node,
+ "i2s-controller", 0);
+
+ if (i2s_node) {
+ dai->cpu_dai_name = NULL;
+ dai->cpu_of_node = i2s_node;
+ dai->platform_name = NULL;
+ dai->platform_of_node = i2s_node;
+ }
+ }
+
+ ret = snd_soc_register_card(&snd_rpi_raspidac3);
+ if (ret)
+ dev_err(&pdev->dev,
+ "snd_soc_register_card() failed: %d\n", ret);
+
+ return ret;
+}
+
+/* sound card disconnect */
+static int snd_rpi_raspidac3_remove(struct platform_device *pdev)
+{
+ return snd_soc_unregister_card(&snd_rpi_raspidac3);
+}
+
+static const struct of_device_id raspidac3_of_match[] = {
+ { .compatible = "jg,raspidacv3", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, raspidac3_of_match);
+
+/* sound card platform driver */
+static struct platform_driver snd_rpi_raspidac3_driver = {
+ .driver = {
+ .name = "snd-rpi-raspidac3",
+ .owner = THIS_MODULE,
+ .of_match_table = raspidac3_of_match,
+ },
+ .probe = snd_rpi_raspidac3_probe,
+ .remove = snd_rpi_raspidac3_remove,
+};
+
+module_platform_driver(snd_rpi_raspidac3_driver);
+
+MODULE_AUTHOR("Jan Grulich <jan@grulich.eu>");
+MODULE_DESCRIPTION("ASoC Driver for RaspiDAC Rev.3x");
+MODULE_LICENSE("GPL v2");

446
target/linux/brcm2708/patches-4.9/0078-Add-Support-for-JustBoom-Audio-boards.patch Normal file
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@ -0,0 +1,446 @@
From 16e3f935b10cbd118056806ebd3afe6eed4c0183 Mon Sep 17 00:00:00 2001
From: Aaron Shaw <shawaj@gmail.com>
Date: Thu, 7 Apr 2016 21:26:21 +0100
Subject: [PATCH] Add Support for JustBoom Audio boards
justboom-dac: Adjust for ALSA API change
As of 4.4, snd_soc_limit_volume now takes a struct snd_soc_card *
rather than a struct snd_soc_codec *.
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
sound/soc/bcm/Kconfig | 14 +++
sound/soc/bcm/Makefile | 4 +
sound/soc/bcm/justboom-dac.c | 162 +++++++++++++++++++++++++++++++
sound/soc/bcm/justboom-digi.c | 215 ++++++++++++++++++++++++++++++++++++++++++
4 files changed, 395 insertions(+)
create mode 100644 sound/soc/bcm/justboom-dac.c
create mode 100644 sound/soc/bcm/justboom-digi.c
--- a/sound/soc/bcm/Kconfig
+++ b/sound/soc/bcm/Kconfig
@@ -52,6 +52,20 @@ config SND_BCM2708_SOC_RPI_PROTO
help
Say Y or M if you want to add support for Audio Codec Board PROTO (WM8731).
+config SND_BCM2708_SOC_JUSTBOOM_DAC
+ tristate "Support for JustBoom DAC"
+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+ select SND_SOC_PCM512x
+ help
+ Say Y or M if you want to add support for JustBoom DAC.
+
+config SND_BCM2708_SOC_JUSTBOOM_DIGI
+ tristate "Support for JustBoom Digi"
+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+ select SND_SOC_WM8804
+ help
+ Say Y or M if you want to add support for JustBoom Digi.
+
config SND_BCM2708_SOC_IQAUDIO_DAC
tristate "Support for IQaudIO-DAC"
depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
--- a/sound/soc/bcm/Makefile
+++ b/sound/soc/bcm/Makefile
@@ -12,6 +12,8 @@ obj-$(CONFIG_SND_SOC_CYGNUS) += snd-soc-
snd-soc-hifiberry-dac-objs := hifiberry_dac.o
snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o
snd-soc-hifiberry-digi-objs := hifiberry_digi.o
+snd-soc-justboom-dac-objs := justboom-dac.o
+snd-soc-justboom-digi-objs := justboom-digi.o
snd-soc-rpi-dac-objs := rpi-dac.o
snd-soc-rpi-proto-objs := rpi-proto.o
snd-soc-iqaudio-dac-objs := iqaudio-dac.o
@@ -20,6 +22,8 @@ snd-soc-raspidac3-objs := raspidac3.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) += snd-soc-hifiberry-digi.o
+obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC) += snd-soc-justboom-dac.o
+obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DIGI) += snd-soc-justboom-digi.o
obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o
obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
--- /dev/null
+++ b/sound/soc/bcm/justboom-dac.c
@@ -0,0 +1,162 @@
+/*
+ * ASoC Driver for JustBoom DAC Raspberry Pi HAT Sound Card
+ *
+ * Author: Milan Neskovic
+ * Copyright 2016
+ * based on code by Daniel Matuschek <info@crazy-audio.com>
+ * based on code by Florian Meier <florian.meier@koalo.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+
+#include "../codecs/pcm512x.h"
+
+static bool digital_gain_0db_limit = true;
+
+static int snd_rpi_justboom_dac_init(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_soc_codec *codec = rtd->codec;
+ snd_soc_update_bits(codec, PCM512x_GPIO_EN, 0x08, 0x08);
+ snd_soc_update_bits(codec, PCM512x_GPIO_OUTPUT_4, 0xf, 0x02);
+ snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x08);
+
+ if (digital_gain_0db_limit)
+ {
+ int ret;
+ struct snd_soc_card *card = rtd->card;
+
+ ret = snd_soc_limit_volume(card, "Digital Playback Volume", 207);
+ if (ret < 0)
+ dev_warn(card->dev, "Failed to set volume limit: %d\n", ret);
+ }
+
+ return 0;
+}
+
+static int snd_rpi_justboom_dac_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+ /*return snd_soc_dai_set_bclk_ratio(cpu_dai, 64);*/
+ unsigned int sample_bits =
+ snd_pcm_format_physical_width(params_format(params));
+ return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2);
+}
+
+static int snd_rpi_justboom_dac_startup(struct snd_pcm_substream *substream) {
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_codec *codec = rtd->codec;
+ snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x08);
+ return 0;
+}
+
+static void snd_rpi_justboom_dac_shutdown(struct snd_pcm_substream *substream) {
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_codec *codec = rtd->codec;
+ snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x00);
+}
+
+/* machine stream operations */
+static struct snd_soc_ops snd_rpi_justboom_dac_ops = {
+ .hw_params = snd_rpi_justboom_dac_hw_params,
+ .startup = snd_rpi_justboom_dac_startup,
+ .shutdown = snd_rpi_justboom_dac_shutdown,
+};
+
+static struct snd_soc_dai_link snd_rpi_justboom_dac_dai[] = {
+{
+ .name = "JustBoom DAC",
+ .stream_name = "JustBoom DAC HiFi",
+ .cpu_dai_name = "bcm2708-i2s.0",
+ .codec_dai_name = "pcm512x-hifi",
+ .platform_name = "bcm2708-i2s.0",
+ .codec_name = "pcm512x.1-004d",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS,
+ .ops = &snd_rpi_justboom_dac_ops,
+ .init = snd_rpi_justboom_dac_init,
+},
+};
+
+/* audio machine driver */
+static struct snd_soc_card snd_rpi_justboom_dac = {
+ .name = "snd_rpi_justboom_dac",
+ .owner = THIS_MODULE,
+ .dai_link = snd_rpi_justboom_dac_dai,
+ .num_links = ARRAY_SIZE(snd_rpi_justboom_dac_dai),
+};
+
+static int snd_rpi_justboom_dac_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+
+ snd_rpi_justboom_dac.dev = &pdev->dev;
+
+ if (pdev->dev.of_node) {
+ struct device_node *i2s_node;
+ struct snd_soc_dai_link *dai = &snd_rpi_justboom_dac_dai[0];
+ i2s_node = of_parse_phandle(pdev->dev.of_node,
+ "i2s-controller", 0);
+
+ if (i2s_node) {
+ dai->cpu_dai_name = NULL;
+ dai->cpu_of_node = i2s_node;
+ dai->platform_name = NULL;
+ dai->platform_of_node = i2s_node;
+ }
+
+ digital_gain_0db_limit = !of_property_read_bool(
+ pdev->dev.of_node, "justboom,24db_digital_gain");
+ }
+
+ ret = snd_soc_register_card(&snd_rpi_justboom_dac);
+ if (ret)
+ dev_err(&pdev->dev,
+ "snd_soc_register_card() failed: %d\n", ret);
+
+ return ret;
+}
+
+static int snd_rpi_justboom_dac_remove(struct platform_device *pdev)
+{
+ return snd_soc_unregister_card(&snd_rpi_justboom_dac);
+}
+
+static const struct of_device_id snd_rpi_justboom_dac_of_match[] = {
+ { .compatible = "justboom,justboom-dac", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, snd_rpi_justboom_dac_of_match);
+
+static struct platform_driver snd_rpi_justboom_dac_driver = {
+ .driver = {
+ .name = "snd-rpi-justboom-dac",
+ .owner = THIS_MODULE,
+ .of_match_table = snd_rpi_justboom_dac_of_match,
+ },
+ .probe = snd_rpi_justboom_dac_probe,
+ .remove = snd_rpi_justboom_dac_remove,
+};
+
+module_platform_driver(snd_rpi_justboom_dac_driver);
+
+MODULE_AUTHOR("Milan Neskovic <info@justboom.co>");
+MODULE_DESCRIPTION("ASoC Driver for JustBoom PI DAC HAT Sound Card");
+MODULE_LICENSE("GPL v2");
--- /dev/null
+++ b/sound/soc/bcm/justboom-digi.c
@@ -0,0 +1,215 @@
+/*
+ * ASoC Driver for JustBoom Raspberry Pi Digi HAT Sound Card
+ *
+ * Author: Milan Neskovic
+ * Copyright 2016
+ * based on code by Daniel Matuschek <info@crazy-audio.com>
+ * based on code by Florian Meier <florian.meier@koalo.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+
+#include "../codecs/wm8804.h"
+
+static int snd_rpi_justboom_digi_init(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_soc_codec *codec = rtd->codec;
+
+ /* enable TX output */
+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x0);
+
+ return 0;
+}
+
+static int snd_rpi_justboom_digi_startup(struct snd_pcm_substream *substream) {
+ /* turn on digital output */
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_codec *codec = rtd->codec;
+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x3c, 0x00);
+ return 0;
+}
+
+static void snd_rpi_justboom_digi_shutdown(struct snd_pcm_substream *substream) {
+ /* turn off output */
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_codec *codec = rtd->codec;
+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x3c, 0x3c);
+}
+
+static int snd_rpi_justboom_digi_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
+ struct snd_soc_codec *codec = rtd->codec;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+
+ int sysclk = 27000000; /* This is fixed on this board */
+
+ long mclk_freq=0;
+ int mclk_div=1;
+ int sampling_freq=1;
+
+ int ret;
+
+ int samplerate = params_rate(params);
+
+ if (samplerate<=96000) {
+ mclk_freq=samplerate*256;
+ mclk_div=WM8804_MCLKDIV_256FS;
+ } else {
+ mclk_freq=samplerate*128;
+ mclk_div=WM8804_MCLKDIV_128FS;
+ }
+
+ switch (samplerate) {
+ case 32000:
+ sampling_freq=0x03;
+ break;
+ case 44100:
+ sampling_freq=0x00;
+ break;
+ case 48000:
+ sampling_freq=0x02;
+ break;
+ case 88200:
+ sampling_freq=0x08;
+ break;
+ case 96000:
+ sampling_freq=0x0a;
+ break;
+ case 176400:
+ sampling_freq=0x0c;
+ break;
+ case 192000:
+ sampling_freq=0x0e;
+ break;
+ default:
+ dev_err(codec->dev,
+ "Failed to set WM8804 SYSCLK, unsupported samplerate %d\n",
+ samplerate);
+ }
+
+ snd_soc_dai_set_clkdiv(codec_dai, WM8804_MCLK_DIV, mclk_div);
+ snd_soc_dai_set_pll(codec_dai, 0, 0, sysclk, mclk_freq);
+
+ ret = snd_soc_dai_set_sysclk(codec_dai, WM8804_TX_CLKSRC_PLL,
+ sysclk, SND_SOC_CLOCK_OUT);
+ if (ret < 0) {
+ dev_err(codec->dev,
+ "Failed to set WM8804 SYSCLK: %d\n", ret);
+ return ret;
+ }
+
+ /* Enable TX output */
+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x0);
+
+ /* Power on */
+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x9, 0);
+
+ /* set sampling frequency status bits */
+ snd_soc_update_bits(codec, WM8804_SPDTX4, 0x0f, sampling_freq);
+
+ return snd_soc_dai_set_bclk_ratio(cpu_dai,64);
+}
+
+/* machine stream operations */
+static struct snd_soc_ops snd_rpi_justboom_digi_ops = {
+ .hw_params = snd_rpi_justboom_digi_hw_params,
+ .startup = snd_rpi_justboom_digi_startup,
+ .shutdown = snd_rpi_justboom_digi_shutdown,
+};
+
+static struct snd_soc_dai_link snd_rpi_justboom_digi_dai[] = {
+{
+ .name = "JustBoom Digi",
+ .stream_name = "JustBoom Digi HiFi",
+ .cpu_dai_name = "bcm2708-i2s.0",
+ .codec_dai_name = "wm8804-spdif",
+ .platform_name = "bcm2708-i2s.0",
+ .codec_name = "wm8804.1-003b",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBM_CFM,
+ .ops = &snd_rpi_justboom_digi_ops,
+ .init = snd_rpi_justboom_digi_init,
+},
+};
+
+/* audio machine driver */
+static struct snd_soc_card snd_rpi_justboom_digi = {
+ .name = "snd_rpi_justboom_digi",
+ .owner = THIS_MODULE,
+ .dai_link = snd_rpi_justboom_digi_dai,
+ .num_links = ARRAY_SIZE(snd_rpi_justboom_digi_dai),
+};
+
+static int snd_rpi_justboom_digi_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+
+ snd_rpi_justboom_digi.dev = &pdev->dev;
+
+ if (pdev->dev.of_node) {
+ struct device_node *i2s_node;
+ struct snd_soc_dai_link *dai = &snd_rpi_justboom_digi_dai[0];
+ i2s_node = of_parse_phandle(pdev->dev.of_node,
+ "i2s-controller", 0);
+
+ if (i2s_node) {
+ dai->cpu_dai_name = NULL;
+ dai->cpu_of_node = i2s_node;
+ dai->platform_name = NULL;
+ dai->platform_of_node = i2s_node;
+ }
+ }
+
+ ret = snd_soc_register_card(&snd_rpi_justboom_digi);
+ if (ret)
+ dev_err(&pdev->dev,
+ "snd_soc_register_card() failed: %d\n", ret);
+
+ return ret;
+}
+
+static int snd_rpi_justboom_digi_remove(struct platform_device *pdev)
+{
+ return snd_soc_unregister_card(&snd_rpi_justboom_digi);
+}
+
+static const struct of_device_id snd_rpi_justboom_digi_of_match[] = {
+ { .compatible = "justboom,justboom-digi", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, snd_rpi_justboom_digi_of_match);
+
+static struct platform_driver snd_rpi_justboom_digi_driver = {
+ .driver = {
+ .name = "snd-rpi-justboom-digi",
+ .owner = THIS_MODULE,
+ .of_match_table = snd_rpi_justboom_digi_of_match,
+ },
+ .probe = snd_rpi_justboom_digi_probe,
+ .remove = snd_rpi_justboom_digi_remove,
+};
+
+module_platform_driver(snd_rpi_justboom_digi_driver);
+
+MODULE_AUTHOR("Milan Neskovic <info@justboom.co>");
+MODULE_DESCRIPTION("ASoC Driver for JustBoom PI Digi HAT Sound Card");
+MODULE_LICENSE("GPL v2");

177
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@ -0,0 +1,177 @@
From 55bbfc45096c8046134a2062acb2dd0806f48250 Mon Sep 17 00:00:00 2001
From: Andrey Grodzovsky <andrey2805@gmail.com>
Date: Tue, 3 May 2016 22:10:59 -0400
Subject: [PATCH] ARM: adau1977-adc: Add basic machine driver for adau1977
codec driver.
This commit adds basic support for the codec usage including: Device tree overlay,
binding I2S bus and setting I2S mode, clock source and frequency setting according
to spec.
Signed-off-by: Andrey Grodzovsky <andrey2805@gmail.com>
---
sound/soc/bcm/Kconfig | 7 +++
sound/soc/bcm/Makefile | 2 +
sound/soc/bcm/adau1977-adc.c | 125 +++++++++++++++++++++++++++++++++++++++++++
3 files changed, 134 insertions(+)
create mode 100644 sound/soc/bcm/adau1977-adc.c
--- a/sound/soc/bcm/Kconfig
+++ b/sound/soc/bcm/Kconfig
@@ -80,3 +80,10 @@ config SND_BCM2708_SOC_RASPIDAC3
select SND_SOC_TPA6130A2
help
Say Y or M if you want to add support for RaspiDAC Rev.3x.
+
+config SND_BCM2708_SOC_ADAU1977_ADC
+ tristate "Support for ADAU1977 ADC"
+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+ select SND_SOC_ADAU1977_I2C
+ help
+ Say Y or M if you want to add support for ADAU1977 ADC.
--- a/sound/soc/bcm/Makefile
+++ b/sound/soc/bcm/Makefile
@@ -9,6 +9,7 @@ snd-soc-cygnus-objs := cygnus-pcm.o cygn
obj-$(CONFIG_SND_SOC_CYGNUS) += snd-soc-cygnus.o
# BCM2708 Machine Support
+snd-soc-adau1977-adc-objs := adau1977-adc.o
snd-soc-hifiberry-dac-objs := hifiberry_dac.o
snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o
snd-soc-hifiberry-digi-objs := hifiberry_digi.o
@@ -19,6 +20,7 @@ snd-soc-rpi-proto-objs := rpi-proto.o
snd-soc-iqaudio-dac-objs := iqaudio-dac.o
snd-soc-raspidac3-objs := raspidac3.o
+obj-$(CONFIG_SND_BCM2708_SOC_ADAU1977_ADC) += snd-soc-adau1977-adc.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) += snd-soc-hifiberry-digi.o
--- /dev/null
+++ b/sound/soc/bcm/adau1977-adc.c
@@ -0,0 +1,125 @@
+/*
+ * ASoC Driver for ADAU1977 ADC
+ *
+ * Author: Andrey Grodzovsky <andrey2805@gmail.com>
+ * Copyright 2016
+ *
+ * This file is based on hifibery_dac driver by Florian Meier.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+
+enum adau1977_clk_id {
+ ADAU1977_SYSCLK,
+};
+
+enum adau1977_sysclk_src {
+ ADAU1977_SYSCLK_SRC_MCLK,
+ ADAU1977_SYSCLK_SRC_LRCLK,
+};
+
+static int eval_adau1977_init(struct snd_soc_pcm_runtime *rtd)
+{
+ int ret;
+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
+
+ ret = snd_soc_dai_set_tdm_slot(codec_dai, 0, 0, 0, 0);
+ if (ret < 0)
+ return ret;
+
+ return snd_soc_codec_set_sysclk(rtd->codec, ADAU1977_SYSCLK,
+ ADAU1977_SYSCLK_SRC_MCLK, 11289600, SND_SOC_CLOCK_IN);
+}
+
+static struct snd_soc_dai_link snd_rpi_adau1977_dai[] = {
+ {
+ .name = "adau1977",
+ .stream_name = "ADAU1977",
+ .cpu_dai_name = "bcm2708-i2s.0",
+ .codec_dai_name = "adau1977-hifi",
+ .platform_name = "bcm2708-i2s.0",
+ .codec_name = "adau1977.1-0011",
+ .init = eval_adau1977_init,
+ .dai_fmt = SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBM_CFM,
+ },
+};
+
+/* audio machine driver */
+static struct snd_soc_card snd_adau1977_adc = {
+ .name = "snd_rpi_adau1977_adc",
+ .owner = THIS_MODULE,
+ .dai_link = snd_rpi_adau1977_dai,
+ .num_links = ARRAY_SIZE(snd_rpi_adau1977_dai),
+};
+
+static int snd_adau1977_adc_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+
+ snd_adau1977_adc.dev = &pdev->dev;
+ if (pdev->dev.of_node) {
+ struct device_node *i2s_node;
+ struct snd_soc_dai_link *dai = &snd_rpi_adau1977_dai[0];
+ i2s_node = of_parse_phandle(pdev->dev.of_node,
+ "i2s-controller", 0);
+
+ if (i2s_node) {
+ dai->cpu_dai_name = NULL;
+ dai->cpu_of_node = i2s_node;
+ dai->platform_name = NULL;
+ dai->platform_of_node = i2s_node;
+ }
+ }
+
+ ret = snd_soc_register_card(&snd_adau1977_adc);
+ if (ret)
+ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret);
+
+ return ret;
+}
+
+static int snd_adau1977_adc_remove(struct platform_device *pdev)
+{
+ return snd_soc_unregister_card(&snd_adau1977_adc);
+}
+
+static const struct of_device_id snd_adau1977_adc_of_match[] = {
+ { .compatible = "adi,adau1977-adc", },
+ {},
+};
+
+MODULE_DEVICE_TABLE(of, snd_adau1977_adc_of_match);
+
+static struct platform_driver snd_adau1977_adc_driver = {
+ .driver = {
+ .name = "snd-adau1977-adc",
+ .owner = THIS_MODULE,
+ .of_match_table = snd_adau1977_adc_of_match,
+ },
+ .probe = snd_adau1977_adc_probe,
+ .remove = snd_adau1977_adc_remove,
+};
+
+module_platform_driver(snd_adau1977_adc_driver);
+
+MODULE_AUTHOR("Andrey Grodzovsky <andrey2805@gmail.com>");
+MODULE_DESCRIPTION("ASoC Driver for ADAU1977 ADC");
+MODULE_LICENSE("GPL v2");

246
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@ -0,0 +1,246 @@
From 14502b0564fc2e7181857de254a6f6bd07db4038 Mon Sep 17 00:00:00 2001
From: Matt Flax <flatmax@flatmax.org>
Date: Mon, 16 May 2016 21:36:31 +1000
Subject: [PATCH] New AudioInjector.net Pi soundcard with low jitter audio in
and out.
Contains the sound/soc/bcm ALSA machine driver and necessary alterations to the Kconfig and Makefile.
Adds the dts overlay and updates the Makefile and README.
Updates the relevant defconfig files to enable building for the Raspberry Pi.
Thanks to Phil Elwell (pelwell) for the review, simple-card concepts and discussion. Thanks to Clive Messer for overlay naming suggestions.
Added support for headphones, microphone and bclk_ratio settings.
This patch adds headphone and microphone capability to the Audio Injector sound card. The patch also sets the bit clock ratio for use in the bcm2835-i2s driver. The bcm2835-i2s can't handle an 8 kHz sample rate when the bit clock is at 12 MHz because its register is only 10 bits wide which can't represent the ch2 offset of 1508. For that reason, the rate constraint is added.
---
sound/soc/bcm/Kconfig | 7 ++
sound/soc/bcm/Makefile | 3 +
sound/soc/bcm/audioinjector-pi-soundcard.c | 193 +++++++++++++++++++++++++++++
3 files changed, 203 insertions(+)
create mode 100644 sound/soc/bcm/audioinjector-pi-soundcard.c
--- a/sound/soc/bcm/Kconfig
+++ b/sound/soc/bcm/Kconfig
@@ -87,3 +87,10 @@ config SND_BCM2708_SOC_ADAU1977_ADC
select SND_SOC_ADAU1977_I2C
help
Say Y or M if you want to add support for ADAU1977 ADC.
+
+config SND_AUDIOINJECTOR_PI_SOUNDCARD
+ tristate "Support for audioinjector.net Pi add on soundcard"
+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+ select SND_SOC_WM8731
+ help
+ Say Y or M if you want to add support for audioinjector.net Pi Hat
--- a/sound/soc/bcm/Makefile
+++ b/sound/soc/bcm/Makefile
@@ -19,6 +19,7 @@ snd-soc-rpi-dac-objs := rpi-dac.o
snd-soc-rpi-proto-objs := rpi-proto.o
snd-soc-iqaudio-dac-objs := iqaudio-dac.o
snd-soc-raspidac3-objs := raspidac3.o
+snd-soc-audioinjector-pi-soundcard-objs := audioinjector-pi-soundcard.o
obj-$(CONFIG_SND_BCM2708_SOC_ADAU1977_ADC) += snd-soc-adau1977-adc.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
@@ -30,3 +31,5 @@ obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) +=
obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o
obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_RASPIDAC3) += snd-soc-raspidac3.o
+obj-$(CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD) += snd-soc-audioinjector-pi-soundcard.o
+
--- /dev/null
+++ b/sound/soc/bcm/audioinjector-pi-soundcard.c
@@ -0,0 +1,193 @@
+/*
+ * ASoC Driver for AudioInjector Pi add on soundcard
+ *
+ * Created on: 13-May-2016
+ * Author: flatmax@flatmax.org
+ * based on code by Cliff Cai <Cliff.Cai@analog.com> for the ssm2602 machine blackfin.
+ * with help from Lars-Peter Clausen for simplifying the original code to use the dai_fmt field.
+ * i2s_node code taken from the other sound/soc/bcm machine drivers.
+ *
+ * Copyright (C) 2016 Flatmax Pty. Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+
+#include <sound/core.h>
+#include <sound/soc.h>
+#include <sound/pcm_params.h>
+#include <sound/control.h>
+
+#include "../codecs/wm8731.h"
+
+static const unsigned int bcm2835_rates_12000000[] = {
+ 8000, 16000, 32000, 44100, 48000, 96000, 88200,
+};
+
+static struct snd_pcm_hw_constraint_list bcm2835_constraints_12000000 = {
+ .list = bcm2835_rates_12000000,
+ .count = ARRAY_SIZE(bcm2835_rates_12000000),
+};
+
+static int snd_audioinjector_pi_soundcard_startup(struct snd_pcm_substream *substream)
+{
+ /* Setup constraints, because there is a 12 MHz XTAL on the board */
+ snd_pcm_hw_constraint_list(substream->runtime, 0,
+ SNDRV_PCM_HW_PARAM_RATE,
+ &bcm2835_constraints_12000000);
+ return 0;
+}
+
+static int snd_audioinjector_pi_soundcard_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+
+ switch (params_rate(params)){
+ case 8000:
+ return snd_soc_dai_set_bclk_ratio(cpu_dai, 1);
+ case 16000:
+ return snd_soc_dai_set_bclk_ratio(cpu_dai, 750);
+ case 32000:
+ return snd_soc_dai_set_bclk_ratio(cpu_dai, 375);
+ case 44100:
+ return snd_soc_dai_set_bclk_ratio(cpu_dai, 272);
+ case 48000:
+ return snd_soc_dai_set_bclk_ratio(cpu_dai, 250);
+ case 88200:
+ return snd_soc_dai_set_bclk_ratio(cpu_dai, 136);
+ case 96000:
+ return snd_soc_dai_set_bclk_ratio(cpu_dai, 125);
+ default:
+ return snd_soc_dai_set_bclk_ratio(cpu_dai, 125);
+ }
+}
+
+/* machine stream operations */
+static struct snd_soc_ops snd_audioinjector_pi_soundcard_ops = {
+ .startup = snd_audioinjector_pi_soundcard_startup,
+ .hw_params = snd_audioinjector_pi_soundcard_hw_params,
+};
+
+static int audioinjector_pi_soundcard_dai_init(struct snd_soc_pcm_runtime *rtd)
+{
+ return snd_soc_dai_set_sysclk(rtd->codec_dai, WM8731_SYSCLK_XTAL, 12000000, SND_SOC_CLOCK_IN);
+}
+
+static struct snd_soc_dai_link audioinjector_pi_soundcard_dai[] = {
+ {
+ .name = "AudioInjector audio",
+ .stream_name = "AudioInjector audio",
+ .cpu_dai_name = "bcm2708-i2s.0",
+ .codec_dai_name = "wm8731-hifi",
+ .platform_name = "bcm2835-i2s.0",
+ .codec_name = "wm8731.1-001a",
+ .ops = &snd_audioinjector_pi_soundcard_ops,
+ .init = audioinjector_pi_soundcard_dai_init,
+ .dai_fmt = SND_SOC_DAIFMT_CBM_CFM|SND_SOC_DAIFMT_I2S|SND_SOC_DAIFMT_NB_NF,
+ },
+};
+
+static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
+ SND_SOC_DAPM_HP("Headphone Jack", NULL),
+ SND_SOC_DAPM_SPK("Ext Spk", NULL),
+ SND_SOC_DAPM_LINE("Line In Jacks", NULL),
+ SND_SOC_DAPM_MIC("Microphone", NULL),
+};
+
+static const struct snd_soc_dapm_route audioinjector_audio_map[] = {
+ /* headphone connected to LHPOUT, RHPOUT */
+ {"Headphone Jack", NULL, "LHPOUT"},
+ {"Headphone Jack", NULL, "RHPOUT"},
+
+ /* speaker connected to LOUT, ROUT */
+ {"Ext Spk", NULL, "ROUT"},
+ {"Ext Spk", NULL, "LOUT"},
+
+ /* line inputs */
+ {"Line In Jacks", NULL, "Line Input"},
+
+ /* mic is connected to Mic Jack, with WM8731 Mic Bias */
+ {"Microphone", NULL, "Mic Bias"},
+};
+
+static struct snd_soc_card snd_soc_audioinjector = {
+ .name = "audioinjector-pi-soundcard",
+ .dai_link = audioinjector_pi_soundcard_dai,
+ .num_links = ARRAY_SIZE(audioinjector_pi_soundcard_dai),
+
+ .dapm_widgets = wm8731_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(wm8731_dapm_widgets),
+ .dapm_routes = audioinjector_audio_map,
+ .num_dapm_routes = ARRAY_SIZE(audioinjector_audio_map),
+};
+
+static int audioinjector_pi_soundcard_probe(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = &snd_soc_audioinjector;
+ int ret;
+
+ card->dev = &pdev->dev;
+
+ if (pdev->dev.of_node) {
+ struct snd_soc_dai_link *dai = &audioinjector_pi_soundcard_dai[0];
+ struct device_node *i2s_node = of_parse_phandle(pdev->dev.of_node,
+ "i2s-controller", 0);
+
+ if (i2s_node) {
+ dai->cpu_dai_name = NULL;
+ dai->cpu_of_node = i2s_node;
+ dai->platform_name = NULL;
+ dai->platform_of_node = i2s_node;
+ } else
+ if (!dai->cpu_of_node) {
+ dev_err(&pdev->dev, "Property 'i2s-controller' missing or invalid\n");
+ return -EINVAL;
+ }
+ }
+
+ if ((ret = snd_soc_register_card(card))) {
+ dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
+ }
+ return ret;
+}
+
+static int audioinjector_pi_soundcard_remove(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = platform_get_drvdata(pdev);
+ return snd_soc_unregister_card(card);
+
+}
+
+static const struct of_device_id audioinjector_pi_soundcard_of_match[] = {
+ { .compatible = "ai,audioinjector-pi-soundcard", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, audioinjector_pi_soundcard_of_match);
+
+static struct platform_driver audioinjector_pi_soundcard_driver = {
+ .driver = {
+ .name = "audioinjector-audio",
+ .owner = THIS_MODULE,
+ .of_match_table = audioinjector_pi_soundcard_of_match,
+ },
+ .probe = audioinjector_pi_soundcard_probe,
+ .remove = audioinjector_pi_soundcard_remove,
+};
+
+module_platform_driver(audioinjector_pi_soundcard_driver);
+MODULE_AUTHOR("Matt Flax <flatmax@flatmax.org>");
+MODULE_DESCRIPTION("AudioInjector.net Pi Soundcard");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:audioinjector-pi-soundcard");
+

295
target/linux/brcm2708/patches-4.9/0081-Add-IQAudIO-Digi-WM8804-board-support.patch Normal file
View File

@ -0,0 +1,295 @@
From 1b18f3be9f034c2e9aefab9b97c5100d5f914a89 Mon Sep 17 00:00:00 2001
From: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk>
Date: Thu, 30 Jun 2016 18:38:42 +0100
Subject: [PATCH] Add IQAudIO Digi WM8804 board support
Support IQAudIO Digi board with iqaudio_digi machine driver and
iqaudio-digi-wm8804-audio overlay.
NB. Machine driver is a cut and paste of hifiberry_digi code, with format
and general cleanup to comply with kernel coding standards.
Signed-off-by: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk>
---
sound/soc/bcm/Kconfig | 7 ++
sound/soc/bcm/Makefile | 2 +
sound/soc/bcm/iqaudio_digi.c | 239 +++++++++++++++++++++++++++++++++++++++++++
3 files changed, 248 insertions(+)
create mode 100644 sound/soc/bcm/iqaudio_digi.c
--- a/sound/soc/bcm/Kconfig
+++ b/sound/soc/bcm/Kconfig
@@ -73,6 +73,13 @@ config SND_BCM2708_SOC_IQAUDIO_DAC
help
Say Y or M if you want to add support for IQaudIO-DAC.
+config SND_BCM2708_SOC_IQAUDIO_DIGI
+ tristate "Support for IQAudIO Digi"
+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+ select SND_SOC_WM8804
+ help
+ Say Y or M if you want to add support for IQAudIO Digital IO board.
+
config SND_BCM2708_SOC_RASPIDAC3
tristate "Support for RaspiDAC Rev.3x"
depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
--- a/sound/soc/bcm/Makefile
+++ b/sound/soc/bcm/Makefile
@@ -18,6 +18,7 @@ snd-soc-justboom-digi-objs := justboom-d
snd-soc-rpi-dac-objs := rpi-dac.o
snd-soc-rpi-proto-objs := rpi-proto.o
snd-soc-iqaudio-dac-objs := iqaudio-dac.o
+snd-soc-iqaudio-digi-objs := iqaudio_digi.o
snd-soc-raspidac3-objs := raspidac3.o
snd-soc-audioinjector-pi-soundcard-objs := audioinjector-pi-soundcard.o
@@ -30,6 +31,7 @@ obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DI
obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o
obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
+obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DIGI) += snd-soc-iqaudio-digi.o
obj-$(CONFIG_SND_BCM2708_SOC_RASPIDAC3) += snd-soc-raspidac3.o
obj-$(CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD) += snd-soc-audioinjector-pi-soundcard.o
--- /dev/null
+++ b/sound/soc/bcm/iqaudio_digi.c
@@ -0,0 +1,239 @@
+/*
+ * ASoC Driver for IQAudIO WM8804 Digi
+ *
+ * Author: Daniel Matuschek <info@crazy-audio.com>
+ * based on the HifiBerry DAC driver by Florian Meier <florian.meier@koalo.de>
+ * Copyright 2013
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+
+#include "../codecs/wm8804.h"
+
+static short int auto_shutdown_output;
+module_param(auto_shutdown_output, short,
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
+MODULE_PARM_DESC(auto_shutdown_output, "Shutdown SP/DIF output if playback is stopped");
+
+static int snd_rpi_iqaudio_digi_init(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_soc_codec *codec = rtd->codec;
+
+ /* enable TX output */
+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x0);
+
+ return 0;
+}
+
+static int snd_rpi_iqaudio_digi_startup(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_codec *codec = rtd->codec;
+
+ /* turn on digital output */
+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x3c, 0x00);
+
+ return 0;
+}
+
+static void snd_rpi_iqaudio_digi_shutdown(struct snd_pcm_substream *substream)
+{
+ if (auto_shutdown_output) {
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_codec *codec = rtd->codec;
+
+ /* turn off digital output */
+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x3c, 0x3c);
+ }
+}
+
+
+static int snd_rpi_iqaudio_digi_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
+ struct snd_soc_codec *codec = rtd->codec;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+
+ int sysclk = 27000000; /* This is fixed on this board */
+
+ long mclk_freq = 0;
+ int mclk_div = 1;
+ int sampling_freq = 1;
+
+ int ret;
+
+ int samplerate = params_rate(params);
+
+ if (samplerate <= 96000) {
+ mclk_freq = samplerate * 256;
+ mclk_div = WM8804_MCLKDIV_256FS;
+ } else {
+ mclk_freq = samplerate * 128;
+ mclk_div = WM8804_MCLKDIV_128FS;
+ }
+
+ switch (samplerate) {
+ case 32000:
+ sampling_freq = 0x03;
+ break;
+ case 44100:
+ sampling_freq = 0x00;
+ break;
+ case 48000:
+ sampling_freq = 0x02;
+ break;
+ case 88200:
+ sampling_freq = 0x08;
+ break;
+ case 96000:
+ sampling_freq = 0x0a;
+ break;
+ case 176400:
+ sampling_freq = 0x0c;
+ break;
+ case 192000:
+ sampling_freq = 0x0e;
+ break;
+ default:
+ dev_err(codec->dev, "Failed to set WM8804 SYSCLK, unsupported samplerate %d\n",
+ samplerate);
+ }
+
+ snd_soc_dai_set_clkdiv(codec_dai, WM8804_MCLK_DIV, mclk_div);
+ snd_soc_dai_set_pll(codec_dai, 0, 0, sysclk, mclk_freq);
+
+ ret = snd_soc_dai_set_sysclk(codec_dai, WM8804_TX_CLKSRC_PLL,
+ sysclk, SND_SOC_CLOCK_OUT);
+ if (ret < 0) {
+ dev_err(codec->dev, "Failed to set WM8804 SYSCLK: %d\n", ret);
+ return ret;
+ }
+
+ /* Enable TX output */
+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x0);
+
+ /* Power on */
+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x9, 0);
+
+ /* set sampling frequency status bits */
+ snd_soc_update_bits(codec, WM8804_SPDTX4, 0x0f, sampling_freq);
+
+ return snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
+}
+
+/* machine stream operations */
+static struct snd_soc_ops snd_rpi_iqaudio_digi_ops = {
+ .hw_params = snd_rpi_iqaudio_digi_hw_params,
+ .startup = snd_rpi_iqaudio_digi_startup,
+ .shutdown = snd_rpi_iqaudio_digi_shutdown,
+};
+
+static struct snd_soc_dai_link snd_rpi_iqaudio_digi_dai[] = {
+{
+ .name = "IQAudIO Digi",
+ .stream_name = "IQAudIO Digi HiFi",
+ .cpu_dai_name = "bcm2708-i2s.0",
+ .codec_dai_name = "wm8804-spdif",
+ .platform_name = "bcm2708-i2s.0",
+ .codec_name = "wm8804.1-003b",
+ .dai_fmt = SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBM_CFM,
+ .ops = &snd_rpi_iqaudio_digi_ops,
+ .init = snd_rpi_iqaudio_digi_init,
+},
+};
+
+/* audio machine driver */
+static struct snd_soc_card snd_rpi_iqaudio_digi = {
+ .name = "IQAudIODigi",
+ .owner = THIS_MODULE,
+ .dai_link = snd_rpi_iqaudio_digi_dai,
+ .num_links = ARRAY_SIZE(snd_rpi_iqaudio_digi_dai),
+};
+
+static int snd_rpi_iqaudio_digi_probe(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = &snd_rpi_iqaudio_digi;
+ char *prefix = "wm8804-digi,";
+ char prop[128];
+ struct device_node *np;
+ int ret = 0;
+
+ snd_rpi_iqaudio_digi.dev = &pdev->dev;
+
+ np = pdev->dev.of_node;
+ if (np) {
+ struct snd_soc_dai_link *dai = &snd_rpi_iqaudio_digi_dai[0];
+ struct device_node *i2s_node;
+
+ i2s_node = of_parse_phandle(np, "i2s-controller", 0);
+ if (i2s_node) {
+ dai->cpu_dai_name = NULL;
+ dai->cpu_of_node = i2s_node;
+ dai->platform_name = NULL;
+ dai->platform_of_node = i2s_node;
+ }
+
+ snprintf(prop, sizeof(prop), "%scard-name", prefix);
+ of_property_read_string(np, prop, &card->name);
+
+ snprintf(prop, sizeof(prop), "%sdai-name", prefix);
+ of_property_read_string(np, prop, &dai->name);
+
+ snprintf(prop, sizeof(prop), "%sdai-stream-name", prefix);
+ of_property_read_string(np, prop, &dai->stream_name);
+ }
+
+ ret = snd_soc_register_card(card);
+ if (ret)
+ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
+ ret);
+
+ return ret;
+}
+
+static int snd_rpi_iqaudio_digi_remove(struct platform_device *pdev)
+{
+ return snd_soc_unregister_card(&snd_rpi_iqaudio_digi);
+}
+
+static const struct of_device_id snd_rpi_iqaudio_digi_of_match[] = {
+ { .compatible = "iqaudio,wm8804-digi", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, snd_rpi_iqaudio_digi_of_match);
+
+static struct platform_driver snd_rpi_iqaudio_digi_driver = {
+ .driver = {
+ .name = "IQAudIODigi",
+ .owner = THIS_MODULE,
+ .of_match_table = snd_rpi_iqaudio_digi_of_match,
+ },
+ .probe = snd_rpi_iqaudio_digi_probe,
+ .remove = snd_rpi_iqaudio_digi_remove,
+};
+
+module_platform_driver(snd_rpi_iqaudio_digi_driver);
+
+MODULE_AUTHOR("Daniel Matuschek <info@crazy-audio.com>");
+MODULE_DESCRIPTION("ASoC Driver for IQAudIO WM8804 Digi");
+MODULE_LICENSE("GPL v2");

467
target/linux/brcm2708/patches-4.9/0082-New-driver-for-RRA-DigiDAC1-soundcard-using-WM8741-W.patch Normal file
View File

@ -0,0 +1,467 @@
From 6daac5c03a5a96f6ae711e90d46e3d5de3ba1298 Mon Sep 17 00:00:00 2001
From: escalator2015 <jmtasende@gmail.com>
Date: Tue, 24 May 2016 16:20:09 +0100
Subject: [PATCH] New driver for RRA DigiDAC1 soundcard using WM8741 + WM8804
---
sound/soc/bcm/Kconfig | 8 +
sound/soc/bcm/Makefile | 2 +
sound/soc/bcm/digidac1-soundcard.c | 422 +++++++++++++++++++++++++++++++++++++
3 files changed, 432 insertions(+)
create mode 100644 sound/soc/bcm/digidac1-soundcard.c
--- a/sound/soc/bcm/Kconfig
+++ b/sound/soc/bcm/Kconfig
@@ -101,3 +101,11 @@ config SND_AUDIOINJECTOR_PI_SOUNDCARD
select SND_SOC_WM8731
help
Say Y or M if you want to add support for audioinjector.net Pi Hat
+
+config SND_DIGIDAC1_SOUNDCARD
+ tristate "Support for Red Rocks Audio DigiDAC1"
+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+ select SND_SOC_WM8804
+ select SND_SOC_WM8741
+ help
+ Say Y or M if you want to add support for Red Rocks Audio DigiDAC1 board.
--- a/sound/soc/bcm/Makefile
+++ b/sound/soc/bcm/Makefile
@@ -21,6 +21,7 @@ snd-soc-iqaudio-dac-objs := iqaudio-dac.
snd-soc-iqaudio-digi-objs := iqaudio_digi.o
snd-soc-raspidac3-objs := raspidac3.o
snd-soc-audioinjector-pi-soundcard-objs := audioinjector-pi-soundcard.o
+snd-soc-digidac1-soundcard-objs := digidac1-soundcard.o
obj-$(CONFIG_SND_BCM2708_SOC_ADAU1977_ADC) += snd-soc-adau1977-adc.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
@@ -34,4 +35,5 @@ obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC
obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DIGI) += snd-soc-iqaudio-digi.o
obj-$(CONFIG_SND_BCM2708_SOC_RASPIDAC3) += snd-soc-raspidac3.o
obj-$(CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD) += snd-soc-audioinjector-pi-soundcard.o
+obj-$(CONFIG_SND_DIGIDAC1_SOUNDCARD) += snd-soc-digidac1-soundcard.o
--- /dev/null
+++ b/sound/soc/bcm/digidac1-soundcard.c
@@ -0,0 +1,422 @@
+/*
+ * ASoC Driver for RRA DigiDAC1
+ * Copyright 2016
+ * Author: José M. Tasende <vintage@redrocksaudio.es>
+ * based on the HifiBerry DAC driver by Florian Meier <florian.meier@koalo.de>
+ * and the Wolfson card driver by Nikesh Oswal, <Nikesh.Oswal@wolfsonmicro.com>
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/i2c.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+#include <sound/soc-dapm.h>
+#include <sound/tlv.h>
+#include <linux/regulator/consumer.h>
+
+#include "../codecs/wm8804.h"
+#include "../codecs/wm8741.h"
+
+#define WM8741_NUM_SUPPLIES 2
+
+/* codec private data */
+struct wm8741_priv {
+ struct wm8741_platform_data pdata;
+ struct regmap *regmap;
+ struct regulator_bulk_data supplies[WM8741_NUM_SUPPLIES];
+ unsigned int sysclk;
+ const struct snd_pcm_hw_constraint_list *sysclk_constraints;
+};
+
+static int samplerate = 44100;
+
+/* New Alsa Controls not exposed by original wm8741 codec driver */
+/* in actual driver the att. adjustment is wrong because */
+/* this DAC has a coarse attenuation register with 4dB steps */
+/* and a fine level register with 0.125dB steps */
+/* each register has 32 steps so combining both we have 1024 steps */
+/* of 0.125 dB. */
+/* The original level controls from driver are removed at startup */
+/* and replaced by the corrected ones. */
+/* The same wm8741 driver can be used for wm8741 and wm8742 devices */
+
+static const DECLARE_TLV_DB_SCALE(dac_tlv_fine, 0, 13, 0);
+static const DECLARE_TLV_DB_SCALE(dac_tlv_coarse, -12700, 400, 1);
+static const char *w8741_dither[4] = {"Off", "RPDF", "TPDF", "HPDF"};
+static const char *w8741_filter[5] = {
+ "Type 1", "Type 2", "Type 3", "Type 4", "Type 5"};
+static const char *w8741_switch[2] = {"Off", "On"};
+static const struct soc_enum w8741_enum[] = {
+SOC_ENUM_SINGLE(WM8741_MODE_CONTROL_2, 0, 4, w8741_dither),/* dithering type */
+SOC_ENUM_SINGLE(WM8741_FILTER_CONTROL, 0, 5, w8741_filter),/* filter type */
+SOC_ENUM_SINGLE(WM8741_FORMAT_CONTROL, 6, 2, w8741_switch),/* phase invert */
+SOC_ENUM_SINGLE(WM8741_VOLUME_CONTROL, 0, 2, w8741_switch),/* volume ramp */
+SOC_ENUM_SINGLE(WM8741_VOLUME_CONTROL, 3, 2, w8741_switch),/* soft mute */
+};
+
+static const struct snd_kcontrol_new w8741_snd_controls_stereo[] = {
+SOC_DOUBLE_R_TLV("DAC Fine Playback Volume", WM8741_DACLLSB_ATTENUATION,
+ WM8741_DACRLSB_ATTENUATION, 0, 31, 1, dac_tlv_fine),
+SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8741_DACLMSB_ATTENUATION,
+ WM8741_DACRMSB_ATTENUATION, 0, 31, 1, dac_tlv_coarse),
+SOC_ENUM("DAC Dither", w8741_enum[0]),
+SOC_ENUM("DAC Digital Filter", w8741_enum[1]),
+SOC_ENUM("DAC Phase Invert", w8741_enum[2]),
+SOC_ENUM("DAC Volume Ramp", w8741_enum[3]),
+SOC_ENUM("DAC Soft Mute", w8741_enum[4]),
+};
+
+static const struct snd_kcontrol_new w8741_snd_controls_mono_left[] = {
+SOC_SINGLE_TLV("DAC Fine Playback Volume", WM8741_DACLLSB_ATTENUATION,
+ 0, 31, 0, dac_tlv_fine),
+SOC_SINGLE_TLV("Digital Playback Volume", WM8741_DACLMSB_ATTENUATION,
+ 0, 31, 1, dac_tlv_coarse),
+SOC_ENUM("DAC Dither", w8741_enum[0]),
+SOC_ENUM("DAC Digital Filter", w8741_enum[1]),
+SOC_ENUM("DAC Phase Invert", w8741_enum[2]),
+SOC_ENUM("DAC Volume Ramp", w8741_enum[3]),
+SOC_ENUM("DAC Soft Mute", w8741_enum[4]),
+};
+
+static const struct snd_kcontrol_new w8741_snd_controls_mono_right[] = {
+SOC_SINGLE_TLV("DAC Fine Playback Volume", WM8741_DACRLSB_ATTENUATION,
+ 0, 31, 0, dac_tlv_fine),
+SOC_SINGLE_TLV("Digital Playback Volume", WM8741_DACRMSB_ATTENUATION,
+ 0, 31, 1, dac_tlv_coarse),
+SOC_ENUM("DAC Dither", w8741_enum[0]),
+SOC_ENUM("DAC Digital Filter", w8741_enum[1]),
+SOC_ENUM("DAC Phase Invert", w8741_enum[2]),
+SOC_ENUM("DAC Volume Ramp", w8741_enum[3]),
+SOC_ENUM("DAC Soft Mute", w8741_enum[4]),
+};
+
+static int w8741_add_controls(struct snd_soc_codec *codec)
+{
+ struct wm8741_priv *wm8741 = snd_soc_codec_get_drvdata(codec);
+
+ switch (wm8741->pdata.diff_mode) {
+ case WM8741_DIFF_MODE_STEREO:
+ case WM8741_DIFF_MODE_STEREO_REVERSED:
+ snd_soc_add_codec_controls(codec,
+ w8741_snd_controls_stereo,
+ ARRAY_SIZE(w8741_snd_controls_stereo));
+ break;
+ case WM8741_DIFF_MODE_MONO_LEFT:
+ snd_soc_add_codec_controls(codec,
+ w8741_snd_controls_mono_left,
+ ARRAY_SIZE(w8741_snd_controls_mono_left));
+ break;
+ case WM8741_DIFF_MODE_MONO_RIGHT:
+ snd_soc_add_codec_controls(codec,
+ w8741_snd_controls_mono_right,
+ ARRAY_SIZE(w8741_snd_controls_mono_right));
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int digidac1_soundcard_init(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_soc_codec *codec = rtd->codec;
+ struct snd_soc_card *card = rtd->card;
+ struct snd_soc_pcm_runtime *wm8741_rtd;
+ struct snd_soc_codec *wm8741_codec;
+ struct snd_card *sound_card = card->snd_card;
+ struct snd_kcontrol *kctl;
+ int ret;
+
+ wm8741_rtd = snd_soc_get_pcm_runtime(card, card->dai_link[1].name);
+ if (!wm8741_rtd) {
+ dev_warn(card->dev, "digidac1_soundcard_init: couldn't get wm8741 rtd\n");
+ return -EFAULT;
+ }
+ wm8741_codec = wm8741_rtd->codec;
+ ret = w8741_add_controls(wm8741_codec);
+ if (ret < 0)
+ dev_warn(card->dev, "Failed to add new wm8741 controls: %d\n",
+ ret);
+
+ /* enable TX output */
+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x0);
+
+ kctl = snd_soc_card_get_kcontrol(card,
+ "Playback Volume");
+ if (kctl) {
+ kctl->vd[0].access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
+ snd_ctl_remove(sound_card, kctl);
+ }
+ kctl = snd_soc_card_get_kcontrol(card,
+ "Fine Playback Volume");
+ if (kctl) {
+ kctl->vd[0].access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
+ snd_ctl_remove(sound_card, kctl);
+ }
+ return 0;
+}
+
+static int digidac1_soundcard_startup(struct snd_pcm_substream *substream)
+{
+ /* turn on wm8804 digital output */
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_codec *codec = rtd->codec;
+ struct snd_soc_card *card = rtd->card;
+ struct snd_soc_pcm_runtime *wm8741_rtd;
+ struct snd_soc_codec *wm8741_codec;
+
+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x3c, 0x00);
+ wm8741_rtd = snd_soc_get_pcm_runtime(card, card->dai_link[1].name);
+ if (!wm8741_rtd) {
+ dev_warn(card->dev, "digidac1_soundcard_startup: couldn't get WM8741 rtd\n");
+ return -EFAULT;
+ }
+ wm8741_codec = wm8741_rtd->codec;
+
+ /* latch wm8741 level */
+ snd_soc_update_bits(wm8741_codec, WM8741_DACLLSB_ATTENUATION,
+ WM8741_UPDATELL, WM8741_UPDATELL);
+ snd_soc_update_bits(wm8741_codec, WM8741_DACLMSB_ATTENUATION,
+ WM8741_UPDATELM, WM8741_UPDATELM);
+ snd_soc_update_bits(wm8741_codec, WM8741_DACRLSB_ATTENUATION,
+ WM8741_UPDATERL, WM8741_UPDATERL);
+ snd_soc_update_bits(wm8741_codec, WM8741_DACRMSB_ATTENUATION,
+ WM8741_UPDATERM, WM8741_UPDATERM);
+
+ return 0;
+}
+
+static void digidac1_soundcard_shutdown(struct snd_pcm_substream *substream)
+{
+ /* turn off wm8804 digital output */
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_codec *codec = rtd->codec;
+
+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x3c, 0x3c);
+}
+
+static int digidac1_soundcard_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
+ struct snd_soc_codec *codec = rtd->codec;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+ struct snd_soc_card *card = rtd->card;
+ struct snd_soc_pcm_runtime *wm8741_rtd;
+ struct snd_soc_codec *wm8741_codec;
+
+ int sysclk = 27000000;
+ long mclk_freq = 0;
+ int mclk_div = 1;
+ int sampling_freq = 1;
+ int ret;
+
+ wm8741_rtd = snd_soc_get_pcm_runtime(card, card->dai_link[1].name);
+ if (!wm8741_rtd) {
+ dev_warn(card->dev, "digidac1_soundcard_hw_params: couldn't get WM8741 rtd\n");
+ return -EFAULT;
+ }
+ wm8741_codec = wm8741_rtd->codec;
+ samplerate = params_rate(params);
+
+ if (samplerate <= 96000) {
+ mclk_freq = samplerate*256;
+ mclk_div = WM8804_MCLKDIV_256FS;
+ } else {
+ mclk_freq = samplerate*128;
+ mclk_div = WM8804_MCLKDIV_128FS;
+ }
+
+ switch (samplerate) {
+ case 32000:
+ sampling_freq = 0x03;
+ break;
+ case 44100:
+ sampling_freq = 0x00;
+ break;
+ case 48000:
+ sampling_freq = 0x02;
+ break;
+ case 88200:
+ sampling_freq = 0x08;
+ break;
+ case 96000:
+ sampling_freq = 0x0a;
+ break;
+ case 176400:
+ sampling_freq = 0x0c;
+ break;
+ case 192000:
+ sampling_freq = 0x0e;
+ break;
+ default:
+ dev_err(codec->dev,
+ "Failed to set WM8804 SYSCLK, unsupported samplerate %d\n",
+ samplerate);
+ }
+
+ snd_soc_dai_set_clkdiv(codec_dai, WM8804_MCLK_DIV, mclk_div);
+ snd_soc_dai_set_pll(codec_dai, 0, 0, sysclk, mclk_freq);
+
+ ret = snd_soc_dai_set_sysclk(codec_dai, WM8804_TX_CLKSRC_PLL,
+ sysclk, SND_SOC_CLOCK_OUT);
+ if (ret < 0) {
+ dev_err(codec->dev,
+ "Failed to set WM8804 SYSCLK: %d\n", ret);
+ return ret;
+ }
+ /* Enable wm8804 TX output */
+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x0);
+
+ /* wm8804 Power on */
+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x9, 0);
+
+ /* wm8804 set sampling frequency status bits */
+ snd_soc_update_bits(codec, WM8804_SPDTX4, 0x0f, sampling_freq);
+
+ /* Now update wm8741 registers for the correct oversampling */
+ if (samplerate <= 48000)
+ snd_soc_update_bits(wm8741_codec, WM8741_MODE_CONTROL_1,
+ WM8741_OSR_MASK, 0x00);
+ else if (samplerate <= 96000)
+ snd_soc_update_bits(wm8741_codec, WM8741_MODE_CONTROL_1,
+ WM8741_OSR_MASK, 0x20);
+ else
+ snd_soc_update_bits(wm8741_codec, WM8741_MODE_CONTROL_1,
+ WM8741_OSR_MASK, 0x40);
+
+ /* wm8741 bit size */
+ switch (params_width(params)) {
+ case 16:
+ snd_soc_update_bits(wm8741_codec, WM8741_FORMAT_CONTROL,
+ WM8741_IWL_MASK, 0x00);
+ break;
+ case 20:
+ snd_soc_update_bits(wm8741_codec, WM8741_FORMAT_CONTROL,
+ WM8741_IWL_MASK, 0x01);
+ break;
+ case 24:
+ snd_soc_update_bits(wm8741_codec, WM8741_FORMAT_CONTROL,
+ WM8741_IWL_MASK, 0x02);
+ break;
+ case 32:
+ snd_soc_update_bits(wm8741_codec, WM8741_FORMAT_CONTROL,
+ WM8741_IWL_MASK, 0x03);
+ break;
+ default:
+ dev_dbg(codec->dev, "wm8741_hw_params: Unsupported bit size param = %d",
+ params_width(params));
+ return -EINVAL;
+ }
+
+ return snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
+}
+/* machine stream operations */
+static struct snd_soc_ops digidac1_soundcard_ops = {
+ .hw_params = digidac1_soundcard_hw_params,
+ .startup = digidac1_soundcard_startup,
+ .shutdown = digidac1_soundcard_shutdown,
+};
+
+static struct snd_soc_dai_link digidac1_soundcard_dai[] = {
+ {
+ .name = "RRA DigiDAC1",
+ .stream_name = "RRA DigiDAC1 HiFi",
+ .cpu_dai_name = "bcm2708-i2s.0",
+ .codec_dai_name = "wm8804-spdif",
+ .platform_name = "bcm2708-i2s.0",
+ .codec_name = "wm8804.1-003b",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBM_CFM,
+ .ops = &digidac1_soundcard_ops,
+ .init = digidac1_soundcard_init,
+ },
+ {
+ .name = "RRA DigiDAC11",
+ .stream_name = "RRA DigiDAC11 HiFi",
+ .cpu_dai_name = "wm8804-spdif",
+ .codec_dai_name = "wm8741",
+ .codec_name = "wm8741.1-001a",
+ .dai_fmt = SND_SOC_DAIFMT_I2S
+ | SND_SOC_DAIFMT_NB_NF
+ | SND_SOC_DAIFMT_CBS_CFS,
+ },
+};
+
+/* audio machine driver */
+static struct snd_soc_card digidac1_soundcard = {
+ .name = "digidac1-soundcard",
+ .owner = THIS_MODULE,
+ .dai_link = digidac1_soundcard_dai,
+ .num_links = ARRAY_SIZE(digidac1_soundcard_dai),
+};
+
+static int digidac1_soundcard_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+
+ digidac1_soundcard.dev = &pdev->dev;
+
+ if (pdev->dev.of_node) {
+ struct device_node *i2s_node;
+ struct snd_soc_dai_link *dai = &digidac1_soundcard_dai[0];
+
+ i2s_node = of_parse_phandle(pdev->dev.of_node,
+ "i2s-controller", 0);
+
+ if (i2s_node) {
+ dai->cpu_dai_name = NULL;
+ dai->cpu_of_node = i2s_node;
+ dai->platform_name = NULL;
+ dai->platform_of_node = i2s_node;
+ }
+ }
+
+ ret = snd_soc_register_card(&digidac1_soundcard);
+ if (ret)
+ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
+ ret);
+
+ return ret;
+}
+
+static int digidac1_soundcard_remove(struct platform_device *pdev)
+{
+ return snd_soc_unregister_card(&digidac1_soundcard);
+}
+
+static const struct of_device_id digidac1_soundcard_of_match[] = {
+ { .compatible = "rra,digidac1-soundcard", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, digidac1_soundcard_of_match);
+
+static struct platform_driver digidac1_soundcard_driver = {
+ .driver = {
+ .name = "digidac1-audio",
+ .owner = THIS_MODULE,
+ .of_match_table = digidac1_soundcard_of_match,
+ },
+ .probe = digidac1_soundcard_probe,
+ .remove = digidac1_soundcard_remove,
+};
+
+module_platform_driver(digidac1_soundcard_driver);
+
+MODULE_AUTHOR("José M. Tasende <vintage@redrocksaudio.es>");
+MODULE_DESCRIPTION("ASoC Driver for RRA DigiDAC1");
+MODULE_LICENSE("GPL v2");

168
target/linux/brcm2708/patches-4.9/0083-Add-support-for-Dion-Audio-LOCO-DAC-AMP-HAT.patch Normal file
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@ -0,0 +1,168 @@
From ce97723802a6e68483111819f29d777e0ff0b975 Mon Sep 17 00:00:00 2001
From: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk>
Date: Sat, 2 Jul 2016 16:26:19 +0100
Subject: [PATCH] Add support for Dion Audio LOCO DAC-AMP HAT
Using dedicated machine driver and pcm5102a codec driver.
Signed-off-by: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk>
---
sound/soc/bcm/Kconfig | 7 +++
sound/soc/bcm/Makefile | 3 +-
sound/soc/bcm/dionaudio_loco.c | 121 +++++++++++++++++++++++++++++++++++++++++
3 files changed, 130 insertions(+), 1 deletion(-)
create mode 100644 sound/soc/bcm/dionaudio_loco.c
--- a/sound/soc/bcm/Kconfig
+++ b/sound/soc/bcm/Kconfig
@@ -109,3 +109,10 @@ config SND_DIGIDAC1_SOUNDCARD
select SND_SOC_WM8741
help
Say Y or M if you want to add support for Red Rocks Audio DigiDAC1 board.
+
+config SND_BCM2708_SOC_DIONAUDIO_LOCO
+ tristate "Support for Dion Audio LOCO DAC-AMP"
+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+ select SND_SOC_PCM5102a
+ help
+ Say Y or M if you want to add support for Dion Audio LOCO.
--- a/sound/soc/bcm/Makefile
+++ b/sound/soc/bcm/Makefile
@@ -22,6 +22,7 @@ snd-soc-iqaudio-digi-objs := iqaudio_dig
snd-soc-raspidac3-objs := raspidac3.o
snd-soc-audioinjector-pi-soundcard-objs := audioinjector-pi-soundcard.o
snd-soc-digidac1-soundcard-objs := digidac1-soundcard.o
+snd-soc-dionaudio-loco-objs := dionaudio_loco.o
obj-$(CONFIG_SND_BCM2708_SOC_ADAU1977_ADC) += snd-soc-adau1977-adc.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
@@ -36,4 +37,4 @@ obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DIG
obj-$(CONFIG_SND_BCM2708_SOC_RASPIDAC3) += snd-soc-raspidac3.o
obj-$(CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD) += snd-soc-audioinjector-pi-soundcard.o
obj-$(CONFIG_SND_DIGIDAC1_SOUNDCARD) += snd-soc-digidac1-soundcard.o
-
+obj-$(CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO) += snd-soc-dionaudio-loco.o
--- /dev/null
+++ b/sound/soc/bcm/dionaudio_loco.c
@@ -0,0 +1,121 @@
+/*
+ * ASoC Driver for Dion Audio LOCO DAC-AMP
+ *
+ * Author: Miquel Blauw <info@dionaudio.nl>
+ * Copyright 2016
+ *
+ * Based on the software of the RPi-DAC writen by Florian Meier
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+
+static int snd_rpi_dionaudio_loco_hw_params(
+ struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+
+ unsigned int sample_bits =
+ snd_pcm_format_physical_width(params_format(params));
+
+ return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2);
+}
+
+/* machine stream operations */
+static struct snd_soc_ops snd_rpi_dionaudio_loco_ops = {
+ .hw_params = snd_rpi_dionaudio_loco_hw_params,
+};
+
+static struct snd_soc_dai_link snd_rpi_dionaudio_loco_dai[] = {
+{
+ .name = "DionAudio LOCO",
+ .stream_name = "DionAudio LOCO DAC-AMP",
+ .cpu_dai_name = "bcm2708-i2s.0",
+ .codec_dai_name = "pcm5102a-hifi",
+ .platform_name = "bcm2708-i2s.0",
+ .codec_name = "pcm5102a-codec",
+ .dai_fmt = SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS,
+ .ops = &snd_rpi_dionaudio_loco_ops,
+},
+};
+
+/* audio machine driver */
+static struct snd_soc_card snd_rpi_dionaudio_loco = {
+ .name = "snd_rpi_dionaudio_loco",
+ .dai_link = snd_rpi_dionaudio_loco_dai,
+ .num_links = ARRAY_SIZE(snd_rpi_dionaudio_loco_dai),
+};
+
+static int snd_rpi_dionaudio_loco_probe(struct platform_device *pdev)
+{
+ struct device_node *np;
+ int ret = 0;
+
+ snd_rpi_dionaudio_loco.dev = &pdev->dev;
+
+ np = pdev->dev.of_node;
+ if (np) {
+ struct snd_soc_dai_link *dai = &snd_rpi_dionaudio_loco_dai[0];
+ struct device_node *i2s_np;
+
+ i2s_np = of_parse_phandle(np, "i2s-controller", 0);
+ if (i2s_np) {
+ dai->cpu_dai_name = NULL;
+ dai->cpu_of_node = i2s_np;
+ dai->platform_name = NULL;
+ dai->platform_of_node = i2s_np;
+ }
+ }
+
+ ret = snd_soc_register_card(&snd_rpi_dionaudio_loco);
+ if (ret)
+ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
+ ret);
+
+ return ret;
+}
+
+static int snd_rpi_dionaudio_loco_remove(struct platform_device *pdev)
+{
+ return snd_soc_unregister_card(&snd_rpi_dionaudio_loco);
+}
+
+static const struct of_device_id snd_rpi_dionaudio_loco_of_match[] = {
+ { .compatible = "dionaudio,loco-pcm5242-tpa3118", },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, snd_rpi_dionaudio_loco_of_match);
+
+static struct platform_driver snd_rpi_dionaudio_loco_driver = {
+ .driver = {
+ .name = "snd-dionaudio-loco",
+ .owner = THIS_MODULE,
+ .of_match_table = snd_rpi_dionaudio_loco_of_match,
+ },
+ .probe = snd_rpi_dionaudio_loco_probe,
+ .remove = snd_rpi_dionaudio_loco_remove,
+};
+
+module_platform_driver(snd_rpi_dionaudio_loco_driver);
+
+MODULE_AUTHOR("Miquel Blauw <info@dionaudio.nl>");
+MODULE_DESCRIPTION("ASoC Driver for DionAudio LOCO");
+MODULE_LICENSE("GPL v2");

202
target/linux/brcm2708/patches-4.9/0084-Allo-Piano-DAC-boards-Initial-2-channel-stereo-suppo.patch Normal file
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@ -0,0 +1,202 @@
From 203501a533e71e5f76f9e06c0f0b8bfb0fc27147 Mon Sep 17 00:00:00 2001
From: Clive Messer <clive.m.messer@gmail.com>
Date: Mon, 19 Sep 2016 14:01:04 +0100
Subject: [PATCH] Allo Piano DAC boards: Initial 2 channel (stereo) support
(#1645)
Add initial 2 channel (stereo) support for Allo Piano DAC (2.0/2.1) boards,
using allo-piano-dac-pcm512x-audio overlay and allo-piano-dac ALSA ASoC
machine driver.
NB. The initial support is 2 channel (stereo) ONLY!
(The Piano DAC 2.1 will only support 2 channel (stereo) left/right output,
pending an update to the upstream pcm512x codec driver, which will have
to be submitted via upstream. With the initial downstream support,
provided by this patch, the Piano DAC 2.1 subwoofer outputs will
not function.)
Signed-off-by: Baswaraj K <jaikumar@cem-solutions.net>
Signed-off-by: Clive Messer <clive.messer@digitaldreamtime.co.uk>
Tested-by: Clive Messer <clive.messer@digitaldreamtime.co.uk>
---
sound/soc/bcm/Kconfig | 7 ++
sound/soc/bcm/Makefile | 2 +
sound/soc/bcm/allo-piano-dac.c | 144 +++++++++++++++++++++++++++++++++++++++++
3 files changed, 153 insertions(+)
create mode 100644 sound/soc/bcm/allo-piano-dac.c
--- a/sound/soc/bcm/Kconfig
+++ b/sound/soc/bcm/Kconfig
@@ -116,3 +116,10 @@ config SND_BCM2708_SOC_DIONAUDIO_LOCO
select SND_SOC_PCM5102a
help
Say Y or M if you want to add support for Dion Audio LOCO.
+
+config SND_BCM2708_SOC_ALLO_PIANO_DAC
+ tristate "Support for Allo Piano DAC"
+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+ select SND_SOC_PCM512x_I2C
+ help
+ Say Y or M if you want to add support for Allo Piano DAC.
--- a/sound/soc/bcm/Makefile
+++ b/sound/soc/bcm/Makefile
@@ -23,6 +23,7 @@ snd-soc-raspidac3-objs := raspidac3.o
snd-soc-audioinjector-pi-soundcard-objs := audioinjector-pi-soundcard.o
snd-soc-digidac1-soundcard-objs := digidac1-soundcard.o
snd-soc-dionaudio-loco-objs := dionaudio_loco.o
+snd-soc-allo-piano-dac-objs := allo-piano-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_ADAU1977_ADC) += snd-soc-adau1977-adc.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
@@ -38,3 +39,4 @@ obj-$(CONFIG_SND_BCM2708_SOC_RASPIDAC3)
obj-$(CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD) += snd-soc-audioinjector-pi-soundcard.o
obj-$(CONFIG_SND_DIGIDAC1_SOUNDCARD) += snd-soc-digidac1-soundcard.o
obj-$(CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO) += snd-soc-dionaudio-loco.o
+obj-$(CONFIG_SND_BCM2708_SOC_ALLO_PIANO_DAC) += snd-soc-allo-piano-dac.o
--- /dev/null
+++ b/sound/soc/bcm/allo-piano-dac.c
@@ -0,0 +1,144 @@
+/*
+ * ALSA ASoC Machine Driver for Allo Piano DAC
+ *
+ * Author: Baswaraj K <jaikumar@cem-solutions.net>
+ * Copyright 2016
+ * based on code by Daniel Matuschek <info@crazy-audio.com>
+ * based on code by Florian Meier <florian.meier@koalo.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+static bool digital_gain_0db_limit = true;
+
+static int snd_allo_piano_dac_init(struct snd_soc_pcm_runtime *rtd)
+{
+ if (digital_gain_0db_limit) {
+ int ret;
+ struct snd_soc_card *card = rtd->card;
+
+ ret = snd_soc_limit_volume(card, "Digital Playback Volume",
+ 207);
+ if (ret < 0)
+ dev_warn(card->dev, "Failed to set volume limit: %d\n",
+ ret);
+ }
+
+ return 0;
+}
+
+static int snd_allo_piano_dac_hw_params(
+ struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+
+ unsigned int sample_bits =
+ snd_pcm_format_physical_width(params_format(params));
+
+ return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2);
+}
+
+/* machine stream operations */
+static struct snd_soc_ops snd_allo_piano_dac_ops = {
+ .hw_params = snd_allo_piano_dac_hw_params,
+};
+
+static struct snd_soc_dai_link snd_allo_piano_dac_dai[] = {
+{
+ .name = "Piano DAC",
+ .stream_name = "Piano DAC HiFi",
+ .cpu_dai_name = "bcm2708-i2s.0",
+ .codec_dai_name = "pcm512x-hifi",
+ .platform_name = "bcm2708-i2s.0",
+ .codec_name = "pcm512x.1-004c",
+ .dai_fmt = SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS,
+ .ops = &snd_allo_piano_dac_ops,
+ .init = snd_allo_piano_dac_init,
+},
+};
+
+/* audio machine driver */
+static struct snd_soc_card snd_allo_piano_dac = {
+ .name = "PianoDAC",
+ .owner = THIS_MODULE,
+ .dai_link = snd_allo_piano_dac_dai,
+ .num_links = ARRAY_SIZE(snd_allo_piano_dac_dai),
+};
+
+static int snd_allo_piano_dac_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+
+ snd_allo_piano_dac.dev = &pdev->dev;
+
+ if (pdev->dev.of_node) {
+ struct device_node *i2s_node;
+ struct snd_soc_dai_link *dai;
+
+ dai = &snd_allo_piano_dac_dai[0];
+ i2s_node = of_parse_phandle(pdev->dev.of_node,
+ "i2s-controller", 0);
+
+ if (i2s_node) {
+ dai->cpu_dai_name = NULL;
+ dai->cpu_of_node = i2s_node;
+ dai->platform_name = NULL;
+ dai->platform_of_node = i2s_node;
+ }
+
+ digital_gain_0db_limit = !of_property_read_bool(
+ pdev->dev.of_node, "allo,24db_digital_gain");
+ }
+
+ ret = snd_soc_register_card(&snd_allo_piano_dac);
+ if (ret)
+ dev_err(&pdev->dev,
+ "snd_soc_register_card() failed: %d\n", ret);
+
+ return ret;
+}
+
+static int snd_allo_piano_dac_remove(struct platform_device *pdev)
+{
+ return snd_soc_unregister_card(&snd_allo_piano_dac);
+}
+
+static const struct of_device_id snd_allo_piano_dac_of_match[] = {
+ { .compatible = "allo,piano-dac", },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, snd_allo_piano_dac_of_match);
+
+static struct platform_driver snd_allo_piano_dac_driver = {
+ .driver = {
+ .name = "snd-allo-piano-dac",
+ .owner = THIS_MODULE,
+ .of_match_table = snd_allo_piano_dac_of_match,
+ },
+ .probe = snd_allo_piano_dac_probe,
+ .remove = snd_allo_piano_dac_remove,
+};
+
+module_platform_driver(snd_allo_piano_dac_driver);
+
+MODULE_AUTHOR("Baswaraj K <jaikumar@cem-solutions.net>");
+MODULE_DESCRIPTION("ALSA ASoC Machine Driver for Allo Piano DAC");
+MODULE_LICENSE("GPL v2");

1168
target/linux/brcm2708/patches-4.9/0085-Support-for-Blokas-Labs-pisound-board.patch Normal file
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164
target/linux/brcm2708/patches-4.9/0086-rpi_display-add-backlight-driver-and-overlay.patch Normal file
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@ -0,0 +1,164 @@
From 42d919a6d8c63ca32dd6caee1288d58319e0e22e Mon Sep 17 00:00:00 2001
From: P33M <P33M@github.com>
Date: Wed, 21 Oct 2015 14:55:21 +0100
Subject: [PATCH] rpi_display: add backlight driver and overlay
Add a mailbox-driven backlight controller for the Raspberry Pi DSI
touchscreen display. Requires updated GPU firmware to recognise the
mailbox request.
Signed-off-by: Gordon Hollingworth <gordon@raspberrypi.org>
---
drivers/video/backlight/Kconfig | 6 ++
drivers/video/backlight/Makefile | 1 +
drivers/video/backlight/rpi_backlight.c | 119 ++++++++++++++++++++++++++++++++
3 files changed, 126 insertions(+)
create mode 100644 drivers/video/backlight/rpi_backlight.c
--- a/drivers/video/backlight/Kconfig
+++ b/drivers/video/backlight/Kconfig
@@ -265,6 +265,12 @@ config BACKLIGHT_PWM
If you have a LCD backlight adjustable by PWM, say Y to enable
this driver.
+config BACKLIGHT_RPI
+ tristate "Raspberry Pi display firmware driven backlight"
+ help
+ If you have the Raspberry Pi DSI touchscreen display, say Y to
+ enable the mailbox-controlled backlight driver.
+
config BACKLIGHT_DA903X
tristate "Backlight Driver for DA9030/DA9034 using WLED"
depends on PMIC_DA903X
--- a/drivers/video/backlight/Makefile
+++ b/drivers/video/backlight/Makefile
@@ -50,6 +50,7 @@ obj-$(CONFIG_BACKLIGHT_PANDORA) += pand
obj-$(CONFIG_BACKLIGHT_PCF50633) += pcf50633-backlight.o
obj-$(CONFIG_BACKLIGHT_PM8941_WLED) += pm8941-wled.o
obj-$(CONFIG_BACKLIGHT_PWM) += pwm_bl.o
+obj-$(CONFIG_BACKLIGHT_RPI) += rpi_backlight.o
obj-$(CONFIG_BACKLIGHT_SAHARA) += kb3886_bl.o
obj-$(CONFIG_BACKLIGHT_SKY81452) += sky81452-backlight.o
obj-$(CONFIG_BACKLIGHT_TOSA) += tosa_bl.o
--- /dev/null
+++ b/drivers/video/backlight/rpi_backlight.c
@@ -0,0 +1,119 @@
+/*
+ * rpi_bl.c - Backlight controller through VPU
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/backlight.h>
+#include <linux/err.h>
+#include <linux/fb.h>
+#include <linux/gpio.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <soc/bcm2835/raspberrypi-firmware.h>
+
+struct rpi_backlight {
+ struct device *dev;
+ struct device *fbdev;
+ struct rpi_firmware *fw;
+};
+
+static int rpi_backlight_update_status(struct backlight_device *bl)
+{
+ struct rpi_backlight *gbl = bl_get_data(bl);
+ int brightness = bl->props.brightness;
+ int ret;
+
+ if (bl->props.power != FB_BLANK_UNBLANK ||
+ bl->props.fb_blank != FB_BLANK_UNBLANK ||
+ bl->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
+ brightness = 0;
+
+ ret = rpi_firmware_property(gbl->fw,
+ RPI_FIRMWARE_FRAMEBUFFER_SET_BACKLIGHT,
+ &brightness, sizeof(brightness));
+ if (ret) {
+ dev_err(gbl->dev, "Failed to set brightness\n");
+ return ret;
+ }
+
+ if (brightness < 0) {
+ dev_err(gbl->dev, "Backlight change failed\n");
+ return -EAGAIN;
+ }
+
+ return 0;
+}
+
+static const struct backlight_ops rpi_backlight_ops = {
+ .options = BL_CORE_SUSPENDRESUME,
+ .update_status = rpi_backlight_update_status,
+};
+
+static int rpi_backlight_probe(struct platform_device *pdev)
+{
+ struct backlight_properties props;
+ struct backlight_device *bl;
+ struct rpi_backlight *gbl;
+ struct device_node *fw_node;
+
+ gbl = devm_kzalloc(&pdev->dev, sizeof(*gbl), GFP_KERNEL);
+ if (gbl == NULL)
+ return -ENOMEM;
+
+ gbl->dev = &pdev->dev;
+
+ fw_node = of_parse_phandle(pdev->dev.of_node, "firmware", 0);
+ if (!fw_node) {
+ dev_err(&pdev->dev, "Missing firmware node\n");
+ return -ENOENT;
+ }
+
+ gbl->fw = rpi_firmware_get(fw_node);
+ if (!gbl->fw)
+ return -EPROBE_DEFER;
+
+ memset(&props, 0, sizeof(props));
+ props.type = BACKLIGHT_RAW;
+ props.max_brightness = 255;
+ bl = devm_backlight_device_register(&pdev->dev, dev_name(&pdev->dev),
+ &pdev->dev, gbl, &rpi_backlight_ops,
+ &props);
+ if (IS_ERR(bl)) {
+ dev_err(&pdev->dev, "failed to register backlight\n");
+ return PTR_ERR(bl);
+ }
+
+ bl->props.brightness = 255;
+ backlight_update_status(bl);
+
+ platform_set_drvdata(pdev, bl);
+ return 0;
+}
+
+static const struct of_device_id rpi_backlight_of_match[] = {
+ { .compatible = "raspberrypi,rpi-backlight" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, rpi_backlight_of_match);
+
+static struct platform_driver rpi_backlight_driver = {
+ .driver = {
+ .name = "rpi-backlight",
+ .of_match_table = of_match_ptr(rpi_backlight_of_match),
+ },
+ .probe = rpi_backlight_probe,
+};
+
+module_platform_driver(rpi_backlight_driver);
+
+MODULE_AUTHOR("Gordon Hollingworth <gordon@raspberrypi.org>");
+MODULE_DESCRIPTION("Raspberry Pi mailbox based Backlight Driver");
+MODULE_LICENSE("GPL");

267
target/linux/brcm2708/patches-4.9/0087-bcm2835-virtgpio-Virtual-GPIO-driver.patch Normal file
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@ -0,0 +1,267 @@
From 1b4e68b09ba226afac9414b11f89d3b833236e13 Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Tue, 23 Feb 2016 19:56:04 +0000
Subject: [PATCH] bcm2835-virtgpio: Virtual GPIO driver
Add a virtual GPIO driver that uses the firmware mailbox interface to
request that the VPU toggles LEDs.
---
drivers/gpio/Kconfig | 6 +
drivers/gpio/Makefile | 1 +
drivers/gpio/gpio-bcm-virt.c | 214 +++++++++++++++++++++++++++++
include/soc/bcm2835/raspberrypi-firmware.h | 1 +
4 files changed, 222 insertions(+)
create mode 100644 drivers/gpio/gpio-bcm-virt.c
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -134,6 +134,12 @@ config GPIO_BCM_KONA
help
Turn on GPIO support for Broadcom "Kona" chips.
+config GPIO_BCM_VIRT
+ bool "Broadcom Virt GPIO"
+ depends on OF_GPIO && RASPBERRYPI_FIRMWARE && (ARCH_BCM2835 || COMPILE_TEST)
+ help
+ Turn on virtual GPIO support for Broadcom BCM283X chips.
+
config GPIO_BRCMSTB
tristate "BRCMSTB GPIO support"
default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -31,6 +31,7 @@ obj-$(CONFIG_GPIO_ATH79) += gpio-ath79.o
obj-$(CONFIG_GPIO_ASPEED) += gpio-aspeed.o
obj-$(CONFIG_GPIO_AXP209) += gpio-axp209.o
obj-$(CONFIG_GPIO_BCM_KONA) += gpio-bcm-kona.o
+obj-$(CONFIG_GPIO_BCM_VIRT) += gpio-bcm-virt.o
obj-$(CONFIG_GPIO_BRCMSTB) += gpio-brcmstb.o
obj-$(CONFIG_GPIO_BT8XX) += gpio-bt8xx.o
obj-$(CONFIG_GPIO_CLPS711X) += gpio-clps711x.o
--- /dev/null
+++ b/drivers/gpio/gpio-bcm-virt.c
@@ -0,0 +1,214 @@
+/*
+ * brcmvirt GPIO driver
+ *
+ * Copyright (C) 2012,2013 Dom Cobley <popcornmix@gmail.com>
+ * Based on gpio-clps711x.c by Alexander Shiyan <shc_work@mail.ru>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/err.h>
+#include <linux/gpio.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <soc/bcm2835/raspberrypi-firmware.h>
+
+#define MODULE_NAME "brcmvirt-gpio"
+#define NUM_GPIO 2
+
+struct brcmvirt_gpio {
+ struct gpio_chip gc;
+ u32 __iomem *ts_base;
+ /* two packed 16-bit counts of enabled and disables
+ Allows host to detect a brief enable that was missed */
+ u32 enables_disables[NUM_GPIO];
+ dma_addr_t bus_addr;
+};
+
+static int brcmvirt_gpio_dir_in(struct gpio_chip *gc, unsigned off)
+{
+ struct brcmvirt_gpio *gpio;
+ gpio = container_of(gc, struct brcmvirt_gpio, gc);
+ return -EINVAL;
+}
+
+static int brcmvirt_gpio_dir_out(struct gpio_chip *gc, unsigned off, int val)
+{
+ struct brcmvirt_gpio *gpio;
+ gpio = container_of(gc, struct brcmvirt_gpio, gc);
+ return 0;
+}
+
+static int brcmvirt_gpio_get(struct gpio_chip *gc, unsigned off)
+{
+ struct brcmvirt_gpio *gpio;
+ unsigned v;
+ gpio = container_of(gc, struct brcmvirt_gpio, gc);
+ v = readl(gpio->ts_base + off);
+ return (v >> off) & 1;
+}
+
+static void brcmvirt_gpio_set(struct gpio_chip *gc, unsigned off, int val)
+{
+ struct brcmvirt_gpio *gpio;
+ u16 enables, disables;
+ s16 diff;
+ bool lit;
+ gpio = container_of(gc, struct brcmvirt_gpio, gc);
+ enables = gpio->enables_disables[off] >> 16;
+ disables = gpio->enables_disables[off] >> 0;
+ diff = (s16)(enables - disables);
+ lit = diff > 0;
+ if ((val && lit) || (!val && !lit))
+ return;
+ if (val)
+ enables++;
+ else
+ disables++;
+ diff = (s16)(enables - disables);
+ BUG_ON(diff != 0 && diff != 1);
+ gpio->enables_disables[off] = (enables << 16) | (disables << 0);
+ writel(gpio->enables_disables[off], gpio->ts_base + off);
+}
+
+static int brcmvirt_gpio_probe(struct platform_device *pdev)
+{
+ int err = 0;
+ struct device *dev = &pdev->dev;
+ struct device_node *np = dev->of_node;
+ struct device_node *fw_node;
+ struct rpi_firmware *fw;
+ struct brcmvirt_gpio *ucb;
+ u32 gpiovirtbuf;
+
+ fw_node = of_parse_phandle(np, "firmware", 0);
+ if (!fw_node) {
+ dev_err(dev, "Missing firmware node\n");
+ return -ENOENT;
+ }
+
+ fw = rpi_firmware_get(fw_node);
+ if (!fw)
+ return -EPROBE_DEFER;
+
+ ucb = devm_kzalloc(dev, sizeof *ucb, GFP_KERNEL);
+ if (!ucb) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ ucb->ts_base = dma_zalloc_coherent(dev, PAGE_SIZE, &ucb->bus_addr, GFP_KERNEL);
+ if (!ucb->ts_base) {
+ pr_err("[%s]: failed to dma_alloc_coherent(%ld)\n",
+ __func__, PAGE_SIZE);
+ err = -ENOMEM;
+ goto out;
+ }
+
+ gpiovirtbuf = (u32)ucb->bus_addr;
+ err = rpi_firmware_property(fw, RPI_FIRMWARE_FRAMEBUFFER_SET_GPIOVIRTBUF,
+ &gpiovirtbuf, sizeof(gpiovirtbuf));
+
+ if (err || gpiovirtbuf != 0) {
+ dev_warn(dev, "Failed to set gpiovirtbuf, trying to get err:%x\n", err);
+ dma_free_coherent(dev, PAGE_SIZE, ucb->ts_base, ucb->bus_addr);
+ ucb->ts_base = 0;
+ ucb->bus_addr = 0;
+ }
+
+ if (!ucb->ts_base) {
+ err = rpi_firmware_property(fw, RPI_FIRMWARE_FRAMEBUFFER_GET_GPIOVIRTBUF,
+ &gpiovirtbuf, sizeof(gpiovirtbuf));
+
+ if (err) {
+ dev_err(dev, "Failed to get gpiovirtbuf\n");
+ goto out;
+ }
+
+ if (!gpiovirtbuf) {
+ dev_err(dev, "No virtgpio buffer\n");
+ err = -ENOENT;
+ goto out;
+ }
+
+ // mmap the physical memory
+ gpiovirtbuf &= ~0xc0000000;
+ ucb->ts_base = ioremap(gpiovirtbuf, 4096);
+ if (ucb->ts_base == NULL) {
+ dev_err(dev, "Failed to map physical address\n");
+ err = -ENOENT;
+ goto out;
+ }
+ ucb->bus_addr = 0;
+ }
+ ucb->gc.label = MODULE_NAME;
+ ucb->gc.owner = THIS_MODULE;
+ //ucb->gc.dev = dev;
+ ucb->gc.of_node = np;
+ ucb->gc.base = 100;
+ ucb->gc.ngpio = NUM_GPIO;
+
+ ucb->gc.direction_input = brcmvirt_gpio_dir_in;
+ ucb->gc.direction_output = brcmvirt_gpio_dir_out;
+ ucb->gc.get = brcmvirt_gpio_get;
+ ucb->gc.set = brcmvirt_gpio_set;
+ ucb->gc.can_sleep = true;
+
+ err = gpiochip_add(&ucb->gc);
+ if (err)
+ goto out;
+
+ platform_set_drvdata(pdev, ucb);
+
+ return 0;
+out:
+ if (ucb->bus_addr) {
+ dma_free_coherent(dev, PAGE_SIZE, ucb->ts_base, ucb->bus_addr);
+ ucb->bus_addr = 0;
+ ucb->ts_base = NULL;
+ } else if (ucb->ts_base) {
+ iounmap(ucb->ts_base);
+ ucb->ts_base = NULL;
+ }
+ return err;
+}
+
+static int brcmvirt_gpio_remove(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ int err = 0;
+ struct brcmvirt_gpio *ucb = platform_get_drvdata(pdev);
+
+ gpiochip_remove(&ucb->gc);
+ if (ucb->bus_addr)
+ dma_free_coherent(dev, PAGE_SIZE, ucb->ts_base, ucb->bus_addr);
+ else if (ucb->ts_base)
+ iounmap(ucb->ts_base);
+ return err;
+}
+
+static const struct of_device_id __maybe_unused brcmvirt_gpio_ids[] = {
+ { .compatible = "brcm,bcm2835-virtgpio" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, brcmvirt_gpio_ids);
+
+static struct platform_driver brcmvirt_gpio_driver = {
+ .driver = {
+ .name = MODULE_NAME,
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(brcmvirt_gpio_ids),
+ },
+ .probe = brcmvirt_gpio_probe,
+ .remove = brcmvirt_gpio_remove,
+};
+module_platform_driver(brcmvirt_gpio_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Dom Cobley <popcornmix@gmail.com>");
+MODULE_DESCRIPTION("brcmvirt GPIO driver");
+MODULE_ALIAS("platform:brcmvirt-gpio");
--- a/include/soc/bcm2835/raspberrypi-firmware.h
+++ b/include/soc/bcm2835/raspberrypi-firmware.h
@@ -116,6 +116,7 @@ enum rpi_firmware_property_tag {
RPI_FIRMWARE_FRAMEBUFFER_SET_OVERSCAN = 0x0004800a,
RPI_FIRMWARE_FRAMEBUFFER_SET_PALETTE = 0x0004800b,
RPI_FIRMWARE_FRAMEBUFFER_SET_TOUCHBUF = 0x0004801f,
+ RPI_FIRMWARE_FRAMEBUFFER_SET_GPIOVIRTBUF = 0x00048020,
RPI_FIRMWARE_FRAMEBUFFER_SET_VSYNC = 0x0004800e,
RPI_FIRMWARE_FRAMEBUFFER_SET_BACKLIGHT = 0x0004800f,

29
target/linux/brcm2708/patches-4.9/0088-amba_pl011-Don-t-use-DT-aliases-for-numbering.patch Normal file
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@ -0,0 +1,29 @@
From 0c3101c247b410c7e73dbb3ede7d0031fb622044 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Tue, 23 Feb 2016 17:26:48 +0000
Subject: [PATCH] amba_pl011: Don't use DT aliases for numbering
The pl011 driver looks for DT aliases of the form "serial<n>",
and if found uses <n> as the device ID. This can cause
/dev/ttyAMA0 to become /dev/ttyAMA1, which is confusing if the
other serial port is provided by the 8250 driver which doesn't
use the same logic.
---
drivers/tty/serial/amba-pl011.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -2441,7 +2441,12 @@ static int pl011_setup_port(struct devic
if (IS_ERR(base))
return PTR_ERR(base);
+ /* Don't use DT serial<n> aliases - it causes the device to
+ be renumbered to ttyAMA1 if it is the second serial port in the
+ system, even though the other one is ttyS0. The 8250 driver
+ doesn't use this logic, so always remains ttyS0.
index = pl011_probe_dt_alias(index, dev);
+ */
uap->old_cr = 0;
uap->port.dev = dev;

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target/linux/brcm2708/patches-4.9/0089-net-Add-non-mainline-source-for-rtl8192cu-wlan.patch Normal file
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1125
target/linux/brcm2708/patches-4.9/0090-net-Fix-rtl8192cu-build-errors-on-other-platforms.patch Normal file
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424
target/linux/brcm2708/patches-4.9/0091-OF-DT-Overlay-configfs-interface.patch Normal file
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@ -0,0 +1,424 @@
From af8af738c62584683c75cbcbbd80ac4425c8986c Mon Sep 17 00:00:00 2001
From: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Date: Wed, 3 Dec 2014 13:23:28 +0200
Subject: [PATCH] OF: DT-Overlay configfs interface
This is a port of Pantelis Antoniou's v3 port that makes use of the
new upstreamed configfs support for binary attributes.
Original commit message:
Add a runtime interface to using configfs for generic device tree overlay
usage. With it its possible to use device tree overlays without having
to use a per-platform overlay manager.
Please see Documentation/devicetree/configfs-overlays.txt for more info.
Changes since v2:
- Removed ifdef CONFIG_OF_OVERLAY (since for now it's required)
- Created a documentation entry
- Slight rewording in Kconfig
Changes since v1:
- of_resolve() -> of_resolve_phandles().
Originally-signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
DT configfs: Fix build errors on other platforms
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
DT configfs: fix build error
There is an error when compiling rpi-4.6.y branch:
CC drivers/of/configfs.o
drivers/of/configfs.c:291:21: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
.default_groups = of_cfs_def_groups,
^
drivers/of/configfs.c:291:21: note: (near initialization for 'of_cfs_subsys.su_group.default_groups.next')
The .default_groups is linked list since commit
1ae1602de028acaa42a0f6ff18d19756f8e825c6.
This commit uses configfs_add_default_group to fix this problem.
Signed-off-by: Slawomir Stepien <sst@poczta.fm>
---
Documentation/devicetree/configfs-overlays.txt | 31 +++
drivers/of/Kconfig | 7 +
drivers/of/Makefile | 1 +
drivers/of/configfs.c | 311 +++++++++++++++++++++++++
4 files changed, 350 insertions(+)
create mode 100644 Documentation/devicetree/configfs-overlays.txt
create mode 100644 drivers/of/configfs.c
--- /dev/null
+++ b/Documentation/devicetree/configfs-overlays.txt
@@ -0,0 +1,31 @@
+Howto use the configfs overlay interface.
+
+A device-tree configfs entry is created in /config/device-tree/overlays
+and and it is manipulated using standard file system I/O.
+Note that this is a debug level interface, for use by developers and
+not necessarily something accessed by normal users due to the
+security implications of having direct access to the kernel's device tree.
+
+* To create an overlay you mkdir the directory:
+
+ # mkdir /config/device-tree/overlays/foo
+
+* Either you echo the overlay firmware file to the path property file.
+
+ # echo foo.dtbo >/config/device-tree/overlays/foo/path
+
+* Or you cat the contents of the overlay to the dtbo file
+
+ # cat foo.dtbo >/config/device-tree/overlays/foo/dtbo
+
+The overlay file will be applied, and devices will be created/destroyed
+as required.
+
+To remove it simply rmdir the directory.
+
+ # rmdir /config/device-tree/overlays/foo
+
+The rationalle of the dual interface (firmware & direct copy) is that each is
+better suited to different use patterns. The firmware interface is what's
+intended to be used by hardware managers in the kernel, while the copy interface
+make sense for developers (since it avoids problems with namespaces).
--- a/drivers/of/Kconfig
+++ b/drivers/of/Kconfig
@@ -112,4 +112,11 @@ config OF_OVERLAY
config OF_NUMA
bool
+config OF_CONFIGFS
+ bool "Device Tree Overlay ConfigFS interface"
+ select CONFIGFS_FS
+ select OF_OVERLAY
+ help
+ Enable a simple user-space driven DT overlay interface.
+
endif # OF
--- a/drivers/of/Makefile
+++ b/drivers/of/Makefile
@@ -1,4 +1,5 @@
obj-y = base.o device.o platform.o
+obj-$(CONFIG_OF_CONFIGFS) += configfs.o
obj-$(CONFIG_OF_DYNAMIC) += dynamic.o
obj-$(CONFIG_OF_FLATTREE) += fdt.o
obj-$(CONFIG_OF_EARLY_FLATTREE) += fdt_address.o
--- /dev/null
+++ b/drivers/of/configfs.c
@@ -0,0 +1,311 @@
+/*
+ * Configfs entries for device-tree
+ *
+ * Copyright (C) 2013 - Pantelis Antoniou <panto@antoniou-consulting.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#include <linux/ctype.h>
+#include <linux/cpu.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_fdt.h>
+#include <linux/spinlock.h>
+#include <linux/slab.h>
+#include <linux/proc_fs.h>
+#include <linux/configfs.h>
+#include <linux/types.h>
+#include <linux/stat.h>
+#include <linux/limits.h>
+#include <linux/file.h>
+#include <linux/vmalloc.h>
+#include <linux/firmware.h>
+#include <linux/sizes.h>
+
+#include "of_private.h"
+
+struct cfs_overlay_item {
+ struct config_item item;
+
+ char path[PATH_MAX];
+
+ const struct firmware *fw;
+ struct device_node *overlay;
+ int ov_id;
+
+ void *dtbo;
+ int dtbo_size;
+};
+
+static int create_overlay(struct cfs_overlay_item *overlay, void *blob)
+{
+ int err;
+
+ /* unflatten the tree */
+ of_fdt_unflatten_tree(blob, NULL, &overlay->overlay);
+ if (overlay->overlay == NULL) {
+ pr_err("%s: failed to unflatten tree\n", __func__);
+ err = -EINVAL;
+ goto out_err;
+ }
+ pr_debug("%s: unflattened OK\n", __func__);
+
+ /* mark it as detached */
+ of_node_set_flag(overlay->overlay, OF_DETACHED);
+
+ /* perform resolution */
+ err = of_resolve_phandles(overlay->overlay);
+ if (err != 0) {
+ pr_err("%s: Failed to resolve tree\n", __func__);
+ goto out_err;
+ }
+ pr_debug("%s: resolved OK\n", __func__);
+
+ err = of_overlay_create(overlay->overlay);
+ if (err < 0) {
+ pr_err("%s: Failed to create overlay (err=%d)\n",
+ __func__, err);
+ goto out_err;
+ }
+ overlay->ov_id = err;
+
+out_err:
+ return err;
+}
+
+static inline struct cfs_overlay_item *to_cfs_overlay_item(
+ struct config_item *item)
+{
+ return item ? container_of(item, struct cfs_overlay_item, item) : NULL;
+}
+
+static ssize_t cfs_overlay_item_path_show(struct config_item *item,
+ char *page)
+{
+ struct cfs_overlay_item *overlay = to_cfs_overlay_item(item);
+ return sprintf(page, "%s\n", overlay->path);
+}
+
+static ssize_t cfs_overlay_item_path_store(struct config_item *item,
+ const char *page, size_t count)
+{
+ struct cfs_overlay_item *overlay = to_cfs_overlay_item(item);
+ const char *p = page;
+ char *s;
+ int err;
+
+ /* if it's set do not allow changes */
+ if (overlay->path[0] != '\0' || overlay->dtbo_size > 0)
+ return -EPERM;
+
+ /* copy to path buffer (and make sure it's always zero terminated */
+ count = snprintf(overlay->path, sizeof(overlay->path) - 1, "%s", p);
+ overlay->path[sizeof(overlay->path) - 1] = '\0';
+
+ /* strip trailing newlines */
+ s = overlay->path + strlen(overlay->path);
+ while (s > overlay->path && *--s == '\n')
+ *s = '\0';
+
+ pr_debug("%s: path is '%s'\n", __func__, overlay->path);
+
+ err = request_firmware(&overlay->fw, overlay->path, NULL);
+ if (err != 0)
+ goto out_err;
+
+ err = create_overlay(overlay, (void *)overlay->fw->data);
+ if (err != 0)
+ goto out_err;
+
+ return count;
+
+out_err:
+
+ release_firmware(overlay->fw);
+ overlay->fw = NULL;
+
+ overlay->path[0] = '\0';
+ return err;
+}
+
+static ssize_t cfs_overlay_item_status_show(struct config_item *item,
+ char *page)
+{
+ struct cfs_overlay_item *overlay = to_cfs_overlay_item(item);
+
+ return sprintf(page, "%s\n",
+ overlay->ov_id >= 0 ? "applied" : "unapplied");
+}
+
+CONFIGFS_ATTR(cfs_overlay_item_, path);
+CONFIGFS_ATTR_RO(cfs_overlay_item_, status);
+
+static struct configfs_attribute *cfs_overlay_attrs[] = {
+ &cfs_overlay_item_attr_path,
+ &cfs_overlay_item_attr_status,
+ NULL,
+};
+
+ssize_t cfs_overlay_item_dtbo_read(struct config_item *item,
+ void *buf, size_t max_count)
+{
+ struct cfs_overlay_item *overlay = to_cfs_overlay_item(item);
+
+ pr_debug("%s: buf=%p max_count=%zu\n", __func__,
+ buf, max_count);
+
+ if (overlay->dtbo == NULL)
+ return 0;
+
+ /* copy if buffer provided */
+ if (buf != NULL) {
+ /* the buffer must be large enough */
+ if (overlay->dtbo_size > max_count)
+ return -ENOSPC;
+
+ memcpy(buf, overlay->dtbo, overlay->dtbo_size);
+ }
+
+ return overlay->dtbo_size;
+}
+
+ssize_t cfs_overlay_item_dtbo_write(struct config_item *item,
+ const void *buf, size_t count)
+{
+ struct cfs_overlay_item *overlay = to_cfs_overlay_item(item);
+ int err;
+
+ /* if it's set do not allow changes */
+ if (overlay->path[0] != '\0' || overlay->dtbo_size > 0)
+ return -EPERM;
+
+ /* copy the contents */
+ overlay->dtbo = kmemdup(buf, count, GFP_KERNEL);
+ if (overlay->dtbo == NULL)
+ return -ENOMEM;
+
+ overlay->dtbo_size = count;
+
+ err = create_overlay(overlay, overlay->dtbo);
+ if (err != 0)
+ goto out_err;
+
+ return count;
+
+out_err:
+ kfree(overlay->dtbo);
+ overlay->dtbo = NULL;
+ overlay->dtbo_size = 0;
+
+ return err;
+}
+
+CONFIGFS_BIN_ATTR(cfs_overlay_item_, dtbo, NULL, SZ_1M);
+
+static struct configfs_bin_attribute *cfs_overlay_bin_attrs[] = {
+ &cfs_overlay_item_attr_dtbo,
+ NULL,
+};
+
+static void cfs_overlay_release(struct config_item *item)
+{
+ struct cfs_overlay_item *overlay = to_cfs_overlay_item(item);
+
+ if (overlay->ov_id >= 0)
+ of_overlay_destroy(overlay->ov_id);
+ if (overlay->fw)
+ release_firmware(overlay->fw);
+ /* kfree with NULL is safe */
+ kfree(overlay->dtbo);
+ kfree(overlay);
+}
+
+static struct configfs_item_operations cfs_overlay_item_ops = {
+ .release = cfs_overlay_release,
+};
+
+static struct config_item_type cfs_overlay_type = {
+ .ct_item_ops = &cfs_overlay_item_ops,
+ .ct_attrs = cfs_overlay_attrs,
+ .ct_bin_attrs = cfs_overlay_bin_attrs,
+ .ct_owner = THIS_MODULE,
+};
+
+static struct config_item *cfs_overlay_group_make_item(
+ struct config_group *group, const char *name)
+{
+ struct cfs_overlay_item *overlay;
+
+ overlay = kzalloc(sizeof(*overlay), GFP_KERNEL);
+ if (!overlay)
+ return ERR_PTR(-ENOMEM);
+ overlay->ov_id = -1;
+
+ config_item_init_type_name(&overlay->item, name, &cfs_overlay_type);
+ return &overlay->item;
+}
+
+static void cfs_overlay_group_drop_item(struct config_group *group,
+ struct config_item *item)
+{
+ struct cfs_overlay_item *overlay = to_cfs_overlay_item(item);
+
+ config_item_put(&overlay->item);
+}
+
+static struct configfs_group_operations overlays_ops = {
+ .make_item = cfs_overlay_group_make_item,
+ .drop_item = cfs_overlay_group_drop_item,
+};
+
+static struct config_item_type overlays_type = {
+ .ct_group_ops = &overlays_ops,
+ .ct_owner = THIS_MODULE,
+};
+
+static struct configfs_group_operations of_cfs_ops = {
+ /* empty - we don't allow anything to be created */
+};
+
+static struct config_item_type of_cfs_type = {
+ .ct_group_ops = &of_cfs_ops,
+ .ct_owner = THIS_MODULE,
+};
+
+struct config_group of_cfs_overlay_group;
+
+static struct configfs_subsystem of_cfs_subsys = {
+ .su_group = {
+ .cg_item = {
+ .ci_namebuf = "device-tree",
+ .ci_type = &of_cfs_type,
+ },
+ },
+ .su_mutex = __MUTEX_INITIALIZER(of_cfs_subsys.su_mutex),
+};
+
+static int __init of_cfs_init(void)
+{
+ int ret;
+
+ pr_info("%s\n", __func__);
+
+ config_group_init(&of_cfs_subsys.su_group);
+ config_group_init_type_name(&of_cfs_overlay_group, "overlays",
+ &overlays_type);
+ configfs_add_default_group(&of_cfs_overlay_group,
+ &of_cfs_subsys.su_group);
+
+ ret = configfs_register_subsystem(&of_cfs_subsys);
+ if (ret != 0) {
+ pr_err("%s: failed to register subsys\n", __func__);
+ goto out;
+ }
+ pr_info("%s: OK\n", __func__);
+out:
+ return ret;
+}
+late_initcall(of_cfs_init);

157
target/linux/brcm2708/patches-4.9/0092-brcm-adds-support-for-BCM43341-wifi.patch Normal file
View File

@ -0,0 +1,157 @@
From 2d888bed201222f294deb8a27641f7f9919dab54 Mon Sep 17 00:00:00 2001
From: Cheong2K <cheong@redbear.cc>
Date: Fri, 26 Feb 2016 18:20:10 +0800
Subject: [PATCH] brcm: adds support for BCM43341 wifi
brcmfmac: Disable power management
Disable wireless power saving in the brcmfmac WLAN driver. This is a
temporary measure until the connectivity loss resulting from power
saving is resolved.
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
brcmfmac: Use original country code as a fallback
Commit 73345fd212980d2e28a5c6d83801c903bd773680:
brcmfmac: Configure country code using device specific settings
prevents region codes from working on devices that lack a region code
translation table. In the event of an absent table, preserve the old
behaviour of using the provided code as-is.
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
brcmfmac: Plug memory leak in brcmf_fill_bss_param
See: https://github.com/raspberrypi/linux/issues/1471
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
brcmfmac: do not use internal roaming engine by default
Some evidence of curing disconnects with this disabled, so make it a default.
Can be overridden with module parameter roamoff=0
See: http://projectable.me/optimize-my-pi-wi-fi/
brcmfmac: Change stop_ap sequence
Patch from Broadcom/Cypress to resolve a customer error
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
.../broadcom/brcm80211/brcmfmac/cfg80211.c | 31 ++++++++++++++++------
.../wireless/broadcom/brcm80211/brcmfmac/common.c | 2 +-
.../wireless/broadcom/brcm80211/brcmfmac/sdio.c | 2 ++
.../broadcom/brcm80211/include/brcm_hw_ids.h | 1 +
4 files changed, 27 insertions(+), 9 deletions(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
@@ -2756,6 +2756,8 @@ brcmf_cfg80211_set_power_mgmt(struct wip
* preference in cfg struct to apply this to
* FW later while initializing the dongle
*/
+ pr_info("power management disabled\n");
+ enabled = false;
cfg->pwr_save = enabled;
if (!check_vif_up(ifp->vif)) {
@@ -4750,12 +4752,15 @@ static int brcmf_cfg80211_stop_ap(struct
err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_DOWN, 1);
if (err < 0)
brcmf_err("BRCMF_C_DOWN error %d\n", err);
- err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_AP, 0);
- if (err < 0)
- brcmf_err("setting AP mode failed %d\n", err);
+
err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_INFRA, 0);
if (err < 0)
brcmf_err("setting INFRA mode failed %d\n", err);
+
+ err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_AP, 0);
+ if (err < 0)
+ brcmf_err("setting AP mode failed %d\n", err);
+
if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_MBSS))
brcmf_fil_iovar_int_set(ifp, "mbss", 0);
brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_REGULATORY,
@@ -6737,12 +6742,18 @@ static s32 brcmf_translate_country_code(
struct brcmfmac_pd_cc *country_codes;
struct brcmfmac_pd_cc_entry *cc;
s32 found_index;
+ char ccode[BRCMF_COUNTRY_BUF_SZ];
+ int rev;
int i;
+ memcpy(ccode, alpha2, sizeof(ccode));
+ rev = -1;
+
country_codes = drvr->settings->country_codes;
if (!country_codes) {
- brcmf_dbg(TRACE, "No country codes configured for device\n");
- return -EINVAL;
+ brcmf_dbg(TRACE, "No country codes configured for device"
+ " - use requested value\n");
+ goto use_input_value;
}
if ((alpha2[0] == ccreq->country_abbrev[0]) &&
@@ -6766,10 +6777,14 @@ static s32 brcmf_translate_country_code(
brcmf_dbg(TRACE, "No country code match found\n");
return -EINVAL;
}
- memset(ccreq, 0, sizeof(*ccreq));
- ccreq->rev = cpu_to_le32(country_codes->table[found_index].rev);
- memcpy(ccreq->ccode, country_codes->table[found_index].cc,
+ rev = country_codes->table[found_index].rev;
+ memcpy(ccode, country_codes->table[found_index].cc,
BRCMF_COUNTRY_BUF_SZ);
+
+use_input_value:
+ memset(ccreq, 0, sizeof(*ccreq));
+ ccreq->rev = cpu_to_le32(rev);
+ memcpy(ccreq->ccode, ccode, sizeof(ccode));
ccreq->country_abbrev[0] = alpha2[0];
ccreq->country_abbrev[1] = alpha2[1];
ccreq->country_abbrev[2] = 0;
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
@@ -69,7 +69,7 @@ static int brcmf_fcmode;
module_param_named(fcmode, brcmf_fcmode, int, 0);
MODULE_PARM_DESC(fcmode, "Mode of firmware signalled flow control");
-static int brcmf_roamoff;
+static int brcmf_roamoff = 1;
module_param_named(roamoff, brcmf_roamoff, int, S_IRUSR);
MODULE_PARM_DESC(roamoff, "Do not use internal roaming engine");
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
@@ -604,6 +604,7 @@ BRCMF_FW_NVRAM_DEF(4329, "brcmfmac4329-s
BRCMF_FW_NVRAM_DEF(4330, "brcmfmac4330-sdio.bin", "brcmfmac4330-sdio.txt");
BRCMF_FW_NVRAM_DEF(4334, "brcmfmac4334-sdio.bin", "brcmfmac4334-sdio.txt");
BRCMF_FW_NVRAM_DEF(43340, "brcmfmac43340-sdio.bin", "brcmfmac43340-sdio.txt");
+BRCMF_FW_NVRAM_DEF(43341, "brcmfmac43341-sdio.bin", "brcmfmac43341-sdio.txt");
BRCMF_FW_NVRAM_DEF(4335, "brcmfmac4335-sdio.bin", "brcmfmac4335-sdio.txt");
BRCMF_FW_NVRAM_DEF(43362, "brcmfmac43362-sdio.bin", "brcmfmac43362-sdio.txt");
BRCMF_FW_NVRAM_DEF(4339, "brcmfmac4339-sdio.bin", "brcmfmac4339-sdio.txt");
@@ -621,6 +622,7 @@ static struct brcmf_firmware_mapping brc
BRCMF_FW_NVRAM_ENTRY(BRCM_CC_4330_CHIP_ID, 0xFFFFFFFF, 4330),
BRCMF_FW_NVRAM_ENTRY(BRCM_CC_4334_CHIP_ID, 0xFFFFFFFF, 4334),
BRCMF_FW_NVRAM_ENTRY(BRCM_CC_43340_CHIP_ID, 0xFFFFFFFF, 43340),
+ BRCMF_FW_NVRAM_ENTRY(BRCM_CC_43341_CHIP_ID, 0xFFFFFFFF, 43341),
BRCMF_FW_NVRAM_ENTRY(BRCM_CC_4335_CHIP_ID, 0xFFFFFFFF, 4335),
BRCMF_FW_NVRAM_ENTRY(BRCM_CC_43362_CHIP_ID, 0xFFFFFFFE, 43362),
BRCMF_FW_NVRAM_ENTRY(BRCM_CC_4339_CHIP_ID, 0xFFFFFFFF, 4339),
--- a/drivers/net/wireless/broadcom/brcm80211/include/brcm_hw_ids.h
+++ b/drivers/net/wireless/broadcom/brcm80211/include/brcm_hw_ids.h
@@ -36,6 +36,7 @@
#define BRCM_CC_4330_CHIP_ID 0x4330
#define BRCM_CC_4334_CHIP_ID 0x4334
#define BRCM_CC_43340_CHIP_ID 43340
+#define BRCM_CC_43341_CHIP_ID 43341
#define BRCM_CC_43362_CHIP_ID 43362
#define BRCM_CC_4335_CHIP_ID 0x4335
#define BRCM_CC_4339_CHIP_ID 0x4339

23
target/linux/brcm2708/patches-4.9/0093-hci_h5-Don-t-send-conf_req-when-ACTIVE.patch Normal file
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@ -0,0 +1,23 @@
From 63e3b21d72b4542cd0f7527bbc7dc0aef13eb16d Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Thu, 17 Dec 2015 13:37:07 +0000
Subject: [PATCH] hci_h5: Don't send conf_req when ACTIVE
Without this patch, a modem and kernel can continuously bombard each
other with conf_req and conf_rsp messages, in a demented game of tag.
---
drivers/bluetooth/hci_h5.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/bluetooth/hci_h5.c
+++ b/drivers/bluetooth/hci_h5.c
@@ -310,7 +310,8 @@ static void h5_handle_internal_rx(struct
h5_link_control(hu, conf_req, 3);
} else if (memcmp(data, conf_req, 2) == 0) {
h5_link_control(hu, conf_rsp, 2);
- h5_link_control(hu, conf_req, 3);
+ if (h5->state != H5_ACTIVE)
+ h5_link_control(hu, conf_req, 3);
} else if (memcmp(data, conf_rsp, 2) == 0) {
if (H5_HDR_LEN(hdr) > 2)
h5->tx_win = (data[2] & 0x07);

2623
target/linux/brcm2708/patches-4.9/0094-config-Add-default-configs.patch Normal file
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File diff suppressed because it is too large Load Diff

1407
target/linux/brcm2708/patches-4.9/0095-Add-arm64-configuration-and-device-tree-differences.patch Normal file
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File diff suppressed because it is too large Load Diff

75
target/linux/brcm2708/patches-4.9/0096-vchiq_arm-Tweak-the-logging-output.patch Normal file
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@ -0,0 +1,75 @@
From c5a316c09e241260f6131e0dc968209b053fcd56 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Mon, 7 Mar 2016 15:05:11 +0000
Subject: [PATCH] vchiq_arm: Tweak the logging output
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
.../vc04_services/interface/vchiq_arm/vchiq_core.c | 31 +++++++++-------------
1 file changed, 13 insertions(+), 18 deletions(-)
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c
@@ -891,16 +891,14 @@ queue_message(VCHIQ_STATE_T *state, VCHI
error_count);
return VCHIQ_ERROR;
}
- if (i == 0) {
- if (SRVTRACE_ENABLED(service,
- VCHIQ_LOG_INFO))
- vchiq_log_dump_mem("Sent", 0,
- header->data + pos,
- min(64u,
- elements[0].size));
- }
}
+ if (SRVTRACE_ENABLED(service,
+ VCHIQ_LOG_INFO))
+ vchiq_log_dump_mem("Sent", 0,
+ header->data,
+ min(16, pos));
+
spin_lock(&quota_spinlock);
service_quota->message_use_count++;
@@ -1039,16 +1037,13 @@ queue_message_sync(VCHIQ_STATE_T *state,
error_count);
return VCHIQ_ERROR;
}
- if (i == 0) {
- if (vchiq_sync_log_level >=
- VCHIQ_LOG_TRACE)
- vchiq_log_dump_mem("Sent Sync",
- 0, header->data + pos,
- min(64u,
- elements[0].size));
- }
}
+ if (vchiq_sync_log_level >= VCHIQ_LOG_TRACE)
+ vchiq_log_dump_mem("Sent Sync",
+ 0, header->data,
+ min(16, pos));
+
VCHIQ_SERVICE_STATS_INC(service, ctrl_tx_count);
VCHIQ_SERVICE_STATS_ADD(service, ctrl_tx_bytes, size);
} else {
@@ -1720,7 +1715,7 @@ parse_rx_slots(VCHIQ_STATE_T *state)
remoteport, localport, size);
if (size > 0)
vchiq_log_dump_mem("Rcvd", 0, header->data,
- min(64, size));
+ min(16, size));
}
if (((unsigned int)header & VCHIQ_SLOT_MASK) + calc_stride(size)
@@ -2187,7 +2182,7 @@ sync_func(void *v)
remoteport, localport, size);
if (size > 0)
vchiq_log_dump_mem("Rcvd", 0, header->data,
- min(64, size));
+ min(16, size));
}
switch (type) {

58
target/linux/brcm2708/patches-4.9/0097-vchiq_arm-Access-the-dequeue_pending-flag-locked.patch Normal file
View File

@ -0,0 +1,58 @@
From c451a1169c71ef984e367a81d619a7089dfb14e0 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Wed, 23 Mar 2016 14:16:25 +0000
Subject: [PATCH] vchiq_arm: Access the dequeue_pending flag locked
Reading through this code looking for another problem (now found in userland)
the use of dequeue_pending outside a lock didn't seem safe.
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
.../vc04_services/interface/vchiq_arm/vchiq_arm.c | 17 ++++++++++++-----
1 file changed, 12 insertions(+), 5 deletions(-)
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
@@ -279,6 +279,7 @@ service_callback(VCHIQ_REASON_T reason,
USER_SERVICE_T *user_service;
VCHIQ_SERVICE_T *service;
VCHIQ_INSTANCE_T instance;
+ int skip_completion = 0;
DEBUG_INITIALISE(g_state.local)
DEBUG_TRACE(SERVICE_CALLBACK_LINE);
@@ -345,9 +346,6 @@ service_callback(VCHIQ_REASON_T reason,
user_service->msg_queue[user_service->msg_insert &
(MSG_QUEUE_SIZE - 1)] = header;
user_service->msg_insert++;
- spin_unlock(&msg_queue_spinlock);
-
- up(&user_service->insert_event);
/* If there is a thread waiting in DEQUEUE_MESSAGE, or if
** there is a MESSAGE_AVAILABLE in the completion queue then
@@ -356,13 +354,22 @@ service_callback(VCHIQ_REASON_T reason,
if (((user_service->message_available_pos -
instance->completion_remove) >= 0) ||
user_service->dequeue_pending) {
- DEBUG_TRACE(SERVICE_CALLBACK_LINE);
user_service->dequeue_pending = 0;
- return VCHIQ_SUCCESS;
+ skip_completion = 1;
}
+ spin_unlock(&msg_queue_spinlock);
+
+ up(&user_service->insert_event);
+
header = NULL;
}
+
+ if (skip_completion) {
+ DEBUG_TRACE(SERVICE_CALLBACK_LINE);
+ return VCHIQ_SUCCESS;
+ }
+
DEBUG_TRACE(SERVICE_CALLBACK_LINE);
return add_completion(instance, reason, header, user_service,

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