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Update the kernel to 3.3.x series, remove patches that doesn't apply anymore

Browse Source 
Signed-off-by: Claudio Mignanti <c.mignanti@gmail.com>

SVN-Revision: 31371
This commit is contained in:
Claudio Mignanti 2012-04-20 13:32:55 +00:00
parent f50231aeb3
commit 3ac08ca653
8 changed files with 60 additions and 463 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
target/linux/at91/Makefile
View File

@ -14,7 +14,7 @@ FEATURES:=squashfs jffs2 targz
CFLAGS:=-Os -pipe -march=armv5te -mtune=arm926ej-s -fno-caller-saves
SUBTARGETS:=netus tqma9263 flexibity
LINUX_VERSION:=2.6.38.8
LINUX_VERSION:=3.3.2
DEVICE_TYPE=
include $(INCLUDE_DIR)/target.mk

120
target/linux/at91/config-default
View File

@ -1,28 +1,32 @@
CONFIG_ALIGNMENT_TRAP=y
# CONFIG_ARCH_AT572D940HF is not set
CONFIG_ARCH_AT91=y
# CONFIG_ARCH_AT91CAP9 is not set
# CONFIG_ARCH_AT91RM9200 is not set
# CONFIG_ARCH_AT91RM9200DK is not set
# CONFIG_ARCH_AT91SAM9260 is not set
# CONFIG_ARCH_AT91SAM9261 is not set
# CONFIG_ARCH_AT91SAM9263 is not set
# CONFIG_ARCH_AT91SAM9G10 is not set
# CONFIG_ARCH_AT91SAM9G20 is not set
CONFIG_ARCH_AT91SAM9G20=y
# CONFIG_ARCH_AT91SAM9G45 is not set
# CONFIG_ARCH_AT91SAM9RL is not set
# CONFIG_ARCH_AT91X40 is not set
CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE=y
CONFIG_ARCH_HAS_CPU_IDLE_WAIT=y
CONFIG_ARCH_NR_GPIO=0
# CONFIG_ARCH_PHYS_ADDR_T_64BIT is not set
CONFIG_ARCH_REQUIRE_GPIOLIB=y
# CONFIG_ARCH_SELECT_MEMORY_MODEL is not set
# CONFIG_ARCH_SPARSEMEM_DEFAULT is not set
# CONFIG_ARCH_SUPPORTS_MSI is not set
CONFIG_ARCH_SUSPEND_POSSIBLE=y
# CONFIG_ARCH_USES_GETTIMEOFFSET is not set
CONFIG_ARM=y
# CONFIG_ARM_CPU_SUSPEND is not set
CONFIG_ARM_L1_CACHE_SHIFT=5
CONFIG_ARM_NR_BANKS=8
CONFIG_ARM_THUMB=y
# CONFIG_AT91SAM9X_WATCHDOG is not set
# CONFIG_AT91_ADC is not set
CONFIG_AT91_EARLY_DBGU=y
CONFIG_AT91_EARLY_DBGU0=y
# CONFIG_AT91_EARLY_USART0 is not set
# CONFIG_AT91_EARLY_USART1 is not set
# CONFIG_AT91_EARLY_USART2 is not set
@ -31,15 +35,17 @@ CONFIG_AT91_EARLY_DBGU=y
# CONFIG_AT91_EARLY_USART5 is not set
CONFIG_AT91_PMC_UNIT=y
CONFIG_AT91_PROGRAMMABLE_CLOCKS=y
CONFIG_AT91_SAM9_ALT_RESET=y
CONFIG_AT91_TIMER_HZ=100
# CONFIG_ATMEL_PWM is not set
# CONFIG_ATMEL_SSC is not set
# CONFIG_ATMEL_TCLIB is not set
CONFIG_BITREVERSE=y
CONFIG_BCMA_POSSIBLE=y
# CONFIG_BLK_DEV is not set
# CONFIG_BLK_DEV_IDE_AT91 is not set
# CONFIG_BLK_DEV_INITRD is not set
# CONFIG_CACHE_L2X0 is not set
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_CLKDEV_LOOKUP=y
CONFIG_CPU_32v5=y
CONFIG_CPU_ABRT_EV5TJ=y
CONFIG_CPU_ARM926T=y
@ -52,22 +58,23 @@ CONFIG_CPU_CP15_MMU=y
# CONFIG_CPU_ICACHE_DISABLE is not set
CONFIG_CPU_PABRT_LEGACY=y
CONFIG_CPU_TLB_V4WBI=y
CONFIG_CPU_USE_DOMAINS=y
CONFIG_CRC16=y
CONFIG_DEBUG_BUGVERBOSE=y
# CONFIG_DEBUG_USER is not set
CONFIG_DECOMPRESS_LZMA=y
CONFIG_DEVPTS_MULTIPLE_INSTANCES=y
# CONFIG_DM9000 is not set
# CONFIG_DW_WATCHDOG is not set
CONFIG_EXT4_FS=y
# CONFIG_FPE_FASTFPE is not set
# CONFIG_FPE_NWFPE is not set
CONFIG_FRAME_POINTER=y
# CONFIG_FSNOTIFY is not set
CONFIG_FS_MBCACHE=y
CONFIG_GENERIC_ATOMIC64=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
CONFIG_GENERIC_FIND_LAST_BIT=y
# CONFIG_GENERIC_CPU_DEVICES is not set
CONFIG_GENERIC_GPIO=y
CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_GPIOLIB=y
CONFIG_GPIO_DEVICE=y
CONFIG_GPIO_SYSFS=y
@ -78,41 +85,51 @@ CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT=y
CONFIG_HAVE_AOUT=y
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_HAVE_ARCH_PFN_VALID=y
CONFIG_HAVE_AT91_DBGU0=y
CONFIG_HAVE_AT91_USART3=y
CONFIG_HAVE_AT91_USART4=y
CONFIG_HAVE_AT91_USART5=y
CONFIG_HAVE_CLK=y
CONFIG_HAVE_C_RECORDMCOUNT=y
CONFIG_HAVE_DMA_API_DEBUG=y
CONFIG_HAVE_DYNAMIC_FTRACE=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_IDE=y
CONFIG_HAVE_GENERIC_HARDIRQS=y
CONFIG_HAVE_IRQ_WORK=y
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_HAVE_KERNEL_LZO=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_KERNEL_XZ=y
CONFIG_HAVE_LATENCYTOP_SUPPORT=y
CONFIG_HAVE_MEMBLOCK=y
CONFIG_HAVE_NET_MACB=y
CONFIG_HAVE_OPROFILE=y
CONFIG_HAVE_PERF_EVENTS=y
CONFIG_HAVE_PROC_CPU=y
# CONFIG_HW_RANDOM is not set
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
CONFIG_HAVE_SPARSE_IRQ=y
# CONFIG_ISDN is not set
CONFIG_JBD2=y
CONFIG_KTIME_SCALAR=y
# CONFIG_LEDS is not set
# CONFIG_LEDS_ATMEL_PWM is not set
# CONFIG_LEDS_GPIO is not set
CONFIG_MACB=y
CONFIG_LEDS_TRIGGER_HEARTBEAT=y
# CONFIG_MACB is not set
# CONFIG_MACH_ACMENETUSFOXG20 is not set
# CONFIG_MACH_AT91RM9200EK is not set
# CONFIG_MACH_AT91SAM9G20EK is not set
# CONFIG_MACH_AT91SAM9G20EK_2MMC is not set
# CONFIG_MACH_AT91SAM_DT is not set
# CONFIG_MACH_CPU9G20 is not set
# CONFIG_MACH_CSB337 is not set
# CONFIG_MACH_GSIA18S is not set
# CONFIG_MACH_NETUS_FOXBOARD is not set
# CONFIG_MACH_ONEARM is not set
# CONFIG_MACH_PCONTROL_G20 is not set
# CONFIG_MACH_PORTUXG20 is not set
# CONFIG_MACH_SNAPPER_9260 is not set
# CONFIG_MACH_STAMP9G20 is not set
# CONFIG_MACH_USB_A9G20 is not set
CONFIG_MDIO_BOARDINFO=y
# CONFIG_MFD_T7L66XB is not set
# CONFIG_MII is not set
CONFIG_MMC=y
@ -123,25 +140,20 @@ CONFIG_MTD_DATAFLASH=y
# CONFIG_MTD_DATAFLASH_OTP is not set
# CONFIG_MTD_DATAFLASH_WRITE_VERIFY is not set
CONFIG_NEED_DMA_MAP_STATE=y
# CONFIG_NETDEV_1000 is not set
# CONFIG_NETUS_FOXGM is not set
CONFIG_NETUS_HEARTBEAT_LED=y
CONFIG_NETUS_SERIALS=y
# CONFIG_NETUS_USE_DATAFLASH is not set
CONFIG_NEED_PER_CPU_KM=y
CONFIG_NLS=y
CONFIG_PAGEFLAGS_EXTENDED=y
CONFIG_PAGE_OFFSET=0xC0000000
# CONFIG_PATA_AT91 is not set
# CONFIG_PCI_SYSCALL is not set
CONFIG_PERF_USE_VMALLOC=y
CONFIG_PHYLIB=y
CONFIG_PHYS_OFFSET=0x0
# CONFIG_PREEMPT_RCU is not set
# CONFIG_QUOTACTL is not set
CONFIG_RTC_CLASS=y
CONFIG_RTC_DRV_AT91SAM9=y
CONFIG_RTC_DRV_AT91SAM9_GPBR=0
CONFIG_RTC_DRV_AT91SAM9_RTT=0
# CONFIG_RTC_DRV_AT91SAM9 is not set
# CONFIG_RTC_DRV_CMOS is not set
# CONFIG_SCSI_DMA is not set
CONFIG_SCSI_MOD=y
# CONFIG_SDIO_UART is not set
# CONFIG_SERIAL_8250 is not set
CONFIG_SERIAL_ATMEL=y
@ -157,54 +169,38 @@ CONFIG_SPI_SPIDEV=y
CONFIG_SPLIT_PTLOCK_CPUS=999999
# CONFIG_STAGING is not set
CONFIG_SYS_SUPPORTS_APM_EMULATION=y
#CONFIG_SND_ATMEL_SOC is not set
CONFIG_UID16=y
# CONFIG_USB_ARCH_HAS_EHCI is not set
# CONFIG_USB_ARCH_HAS_XHCI is not set
CONFIG_USB_AT91=y
# CONFIG_USB_AUDIO is not set
# CONFIG_USB_CDC_COMPOSITE is not set
CONFIG_USB_COMMON=y
CONFIG_USB_ETH=y
CONFIG_USB_ETH_EEM=y
# CONFIG_USB_ETH_EEM is not set
CONFIG_USB_ETH_RNDIS=y
# CONFIG_USB_FILE_STORAGE is not set
# CONFIG_USB_FUNCTIONFS is not set
# CONFIG_USB_FUSB300 is not set
CONFIG_USB_GADGET=y
# CONFIG_USB_GADGETFS is not set
# CONFIG_USB_GADGET_AMD5536UDC is not set
CONFIG_USB_GADGET_AT91=y
# CONFIG_USB_GADGET_ATMEL_USBA is not set
# CONFIG_USB_GADGET_CI13XXX is not set
# CONFIG_USB_GADGET_DEBUG_FILES is not set
# CONFIG_USB_GADGET_DEBUG_FS is not set
# CONFIG_USB_GADGET_DUALSPEED is not set
# CONFIG_USB_GADGET_DUMMY_HCD is not set
# CONFIG_USB_GADGET_FSL_QE is not set
# CONFIG_USB_GADGET_FSL_USB2 is not set
# CONFIG_USB_GADGET_GOKU is not set
# CONFIG_USB_GADGET_IMX is not set
# CONFIG_USB_GADGET_LANGWELL is not set
# CONFIG_USB_GADGET_LH7A40X is not set
# CONFIG_USB_GADGET_M66592 is not set
# CONFIG_USB_GADGET_MUSB_HDRC is not set
# CONFIG_USB_GADGET_NET2280 is not set
# CONFIG_USB_GADGET_OMAP is not set
# CONFIG_USB_GADGET_PXA25X is not set
# CONFIG_USB_GADGET_PXA27X is not set
# CONFIG_USB_GADGET_PXA_U2O is not set
# CONFIG_USB_GADGET_R8A66597 is not set
# CONFIG_USB_GADGET_S3C2410 is not set
# CONFIG_USB_GADGET_S3C_HSOTG is not set
CONFIG_USB_GADGET_SELECTED=y
CONFIG_USB_GADGET_VBUS_DRAW=2
# CONFIG_USB_G_DBGP is not set
# CONFIG_USB_G_HID is not set
# CONFIG_USB_G_NCM is not set
# CONFIG_USB_G_PRINTER is not set
# CONFIG_USB_G_SERIAL is not set
# CONFIG_USB_MIDI_GADGET is not set
# CONFIG_USB_M66592 is not set
# CONFIG_USB_MV_UDC is not set
# CONFIG_USB_NET2272 is not set
# CONFIG_USB_R8A66597 is not set
CONFIG_USB_SUPPORT=y
# CONFIG_USB_ZERO is not set
CONFIG_VECTORS_BASE=0xffff0000
# CONFIG_VFP is not set
# CONFIG_WLAN is not set
CONFIG_XZ_DEC=y
CONFIG_ZBOOT_ROM_BSS=0
CONFIG_ZBOOT_ROM_TEXT=0
CONFIG_ZONE_DMA_FLAG=0

0
target/linux/at91/flexibity/config-2.6.39 → target/linux/at91/flexibity/config-default
View File

1
target/linux/at91/flexibity/target.mk
View File

@ -8,7 +8,6 @@
SUBTARGET:=flexibity
BOARDNAME:=Flexibity Connect (AT91)
FEATURES:=ext2 tgz usb
LINUX_VERSION:=2.6.39
define Target/Description
Build fimware images for Flexibity Connect board.

8
target/linux/at91/netus/config-default
View File

@ -1,8 +1,2 @@
CONFIG_ARCH_AT91SAM9G20=y
# CONFIG_ARCH_USES_GETTIMEOFFSET is not set
CONFIG_CRC16=y
CONFIG_JBD2=y
CONFIG_MACH_NETUS_FOXBOARD=y
# CONFIG_USB_FUNCTIONFS is not set
# CONFIG_USB_G_HID is not set
# CONFIG_USB_G_WEBCAM is not set
CONFIG_MACH_ACMENETUSFOXG20=y

285
target/linux/at91/patches/100-at91_i2c.patch
View File

@ -1,285 +0,0 @@
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -283,7 +283,7 @@ comment "I2C system bus drivers (mostly
config I2C_AT91
tristate "Atmel AT91 I2C Two-Wire interface (TWI)"
- depends on ARCH_AT91 && EXPERIMENTAL && BROKEN
+ depends on ARCH_AT91 && EXPERIMENTAL
help
This supports the use of the I2C interface on Atmel AT91
processors.
--- a/drivers/i2c/busses/i2c-at91.c
+++ b/drivers/i2c/busses/i2c-at91.c
@@ -11,8 +11,18 @@
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.
+
+ D. Gilbert [20100318 AT91SAM9G20]
+ - Check for NACK, a NACK will abort current tranfser,
+ returned as errno=EREMOTEIO unless I2C_M_IGNORE_NAK is set
+ - Only supports 7 bit I2C device (slave) address
+ - clockrate adjustable (module_param).
*/
+
+/* Uncomment following line to see dev_dbg() output in logs */
+/* #define DEBUG 1 */
+
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/err.h>
@@ -32,26 +42,28 @@
#define TWI_CLOCK 100000 /* Hz. max 400 Kbits/sec */
+static unsigned int clockrate = TWI_CLOCK;
+static unsigned int prev_clockrate = TWI_CLOCK;
static struct clk *twi_clk;
static void __iomem *twi_base;
#define at91_twi_read(reg) __raw_readl(twi_base + (reg))
#define at91_twi_write(reg, val) __raw_writel((val), twi_base + (reg))
-
/*
- * Initialize the TWI hardware registers.
+ * Set TWI clock dividers based on clockrate (clock rate for SCL)
*/
-static void __devinit at91_twi_hwinit(void)
+static void at91_twi_clock_dividers(void)
{
unsigned long cdiv, ckdiv;
- at91_twi_write(AT91_TWI_IDR, 0xffffffff); /* Disable all interrupts */
- at91_twi_write(AT91_TWI_CR, AT91_TWI_SWRST); /* Reset peripheral */
- at91_twi_write(AT91_TWI_CR, AT91_TWI_MSEN); /* Set Master mode */
+ if (clockrate < 1000)
+ clockrate = 1000;
+ else if (clockrate > 400000)
+ clockrate = 400000;
- /* Calcuate clock dividers */
- cdiv = (clk_get_rate(twi_clk) / (2 * TWI_CLOCK)) - 3;
+ /* Calculate clock dividers */
+ cdiv = (clk_get_rate(twi_clk) / (2 * clockrate)) - 3;
cdiv = cdiv + 1; /* round up */
ckdiv = 0;
while (cdiv > 255) {
@@ -61,41 +73,92 @@ static void __devinit at91_twi_hwinit(vo
if (cpu_is_at91rm9200()) { /* AT91RM9200 Errata #22 */
if (ckdiv > 5) {
- printk(KERN_ERR "AT91 I2C: Invalid TWI_CLOCK value!\n");
+ printk(KERN_ERR "i2c-at91: Invalid AT91RM9200 clock rate\n");
ckdiv = 5;
}
}
+ /* AT91SAM9G20 has 3 bits for ckdiv so it cannot exceed 7 */
+ if (cpu_is_at91sam9g20()) {
+ if (ckdiv > 7) {
+ printk(KERN_ERR "i2c-at91: Invalid AT91SAM9G20 clock "
+ "rate, ckdiv=%lu\n", ckdiv);
+ ckdiv = 7;
+ }
+ }
at91_twi_write(AT91_TWI_CWGR, (ckdiv << 16) | (cdiv << 8) | cdiv);
+ prev_clockrate = clockrate;
}
/*
- * Poll the i2c status register until the specified bit is set.
- * Returns 0 if timed out (100 msec).
+ * Initialize the TWI hardware registers.
*/
-static short at91_poll_status(unsigned long bit)
+static void __devinit at91_twi_hwinit(void)
{
- int loop_cntr = 10000;
+ at91_twi_write(AT91_TWI_IDR, 0xffffffff); /* Disable all interrupts */
+ at91_twi_write(AT91_TWI_CR, AT91_TWI_SWRST); /* Reset peripheral */
+ /* Set Master mode; Atmel suggests disabling slave mode */
+ at91_twi_write(AT91_TWI_CR, AT91_TWI_MSEN | AT91_TWI_SVDIS);
+ at91_twi_clock_dividers();
+}
+
+/*
+ * Poll the i2c status register until the specified bit is set or a NACK
+ * occurs. Returns 0 if timed out (50 msec). If nack_seen_p is non-NULL
+ * then write 0 to it first, then if the NACK bit is set in the status
+ * register then write 1 to it and immediately return with a value of 1.
+ */
+static short at91_poll_status(unsigned long bit, int * nack_seen_p)
+{
+ int loop_cntr = 5000;
+ unsigned long stat;
+
+ if (nack_seen_p)
+ *nack_seen_p = 0;
+ if (clockrate <= 20000)
+ loop_cntr = 100;
do {
- udelay(10);
- } while (!(at91_twi_read(AT91_TWI_SR) & bit) && (--loop_cntr > 0));
+ if (clockrate <= 20000)
+ udelay(100);
+ else if (clockrate <= 100000)
+ udelay(10);
+ else
+ udelay(3);
+ stat = at91_twi_read(AT91_TWI_SR);
+ if ((stat & AT91_TWI_NACK) && nack_seen_p) {
+ *nack_seen_p = 1;
+ return 1;
+ }
+ } while (!(stat & bit) && (--loop_cntr > 0));
return (loop_cntr > 0);
}
static int xfer_read(struct i2c_adapter *adap, unsigned char *buf, int length)
{
+ int nack_seen = 0;
+ int sent_stop = 0;
+
/* Send Start */
- at91_twi_write(AT91_TWI_CR, AT91_TWI_START);
+ if (1 == length) {
+ at91_twi_write(AT91_TWI_CR, AT91_TWI_START | AT91_TWI_STOP);
+ sent_stop = 1;
+ } else
+ at91_twi_write(AT91_TWI_CR, AT91_TWI_START);
/* Read data */
while (length--) {
- if (!length) /* need to send Stop before reading last byte */
+ /* send Stop before reading last byte (if not already done) */
+ if ((0 == length) && (0 == sent_stop))
at91_twi_write(AT91_TWI_CR, AT91_TWI_STOP);
- if (!at91_poll_status(AT91_TWI_RXRDY)) {
+ if (!at91_poll_status(AT91_TWI_RXRDY, &nack_seen)) {
dev_dbg(&adap->dev, "RXRDY timeout\n");
return -ETIMEDOUT;
+ } else if (nack_seen) {
+ dev_dbg(&adap->dev, "read NACKed\n");
+ /* NACK supplies Stop */
+ return -EREMOTEIO;
}
*buf++ = (at91_twi_read(AT91_TWI_RHR) & 0xff);
}
@@ -105,16 +168,24 @@ static int xfer_read(struct i2c_adapter
static int xfer_write(struct i2c_adapter *adap, unsigned char *buf, int length)
{
+ int nack_seen = 0;
+
/* Load first byte into transmitter */
at91_twi_write(AT91_TWI_THR, *buf++);
- /* Send Start */
+ /* Send Start [AT91SAM9G20 does not need this on write] */
at91_twi_write(AT91_TWI_CR, AT91_TWI_START);
do {
- if (!at91_poll_status(AT91_TWI_TXRDY)) {
+ if (!at91_poll_status(AT91_TWI_TXRDY, &nack_seen)) {
dev_dbg(&adap->dev, "TXRDY timeout\n");
+ /* Set Master mode again */
+ at91_twi_write(AT91_TWI_CR, AT91_TWI_MSEN);
return -ETIMEDOUT;
+ } else if (nack_seen) {
+ dev_dbg(&adap->dev, "write NACKed\n");
+ /* NACK supplies Stop */
+ return -EREMOTEIO;
}
length--; /* byte was transmitted */
@@ -123,7 +194,7 @@ static int xfer_write(struct i2c_adapter
at91_twi_write(AT91_TWI_THR, *buf++);
} while (length);
- /* Send Stop */
+ /* Send Stop [AT91SAM9G20 does not need this on write] */
at91_twi_write(AT91_TWI_CR, AT91_TWI_STOP);
return 0;
@@ -136,11 +207,19 @@ static int xfer_write(struct i2c_adapter
* Instead the "internal device address" has to be written using a separate
* i2c message.
* http://lists.arm.linux.org.uk/pipermail/linux-arm-kernel/2004-September/024411.html
+ * [dpg] By 2010 silicon bugs should be fixed, will need IADR for 10 bit device address
*/
static int at91_xfer(struct i2c_adapter *adap, struct i2c_msg *pmsg, int num)
{
int i, ret;
+ int nack_seen = 0;
+ if (prev_clockrate != clockrate) {
+ dev_dbg(&adap->dev, "at91_xfer: prev_clockrate=%u "
+ "clockrate=%u, change\n", prev_clockrate, clockrate);
+ at91_twi_clock_dividers();
+ msleep(1); /* let things settle */
+ }
dev_dbg(&adap->dev, "at91_xfer: processing %d messages:\n", num);
for (i = 0; i < num; i++) {
@@ -158,13 +237,23 @@ static int at91_xfer(struct i2c_adapter
else
ret = xfer_write(adap, pmsg->buf, pmsg->len);
- if (ret)
- return ret;
-
+ if (ret) {
+ if ((I2C_M_IGNORE_NAK & pmsg->flags) &&
+ (-EREMOTEIO == ret)) {
+ dev_dbg(&adap->dev, "transfer "
+ "NACKed, skip to next\n");
+ pmsg++;
+ continue;
+ } else
+ return ret;
+ }
/* Wait until transfer is finished */
- if (!at91_poll_status(AT91_TWI_TXCOMP)) {
+ if (!at91_poll_status(AT91_TWI_TXCOMP, &nack_seen)) {
dev_dbg(&adap->dev, "TXCOMP timeout\n");
return -ETIMEDOUT;
+ } else if (nack_seen) {
+ dev_dbg(&adap->dev, "TXCOMP NACKed\n");
+ return -EREMOTEIO;
}
}
dev_dbg(&adap->dev, "transfer complete\n");
@@ -239,7 +328,8 @@ static int __devinit at91_i2c_probe(stru
goto fail3;
}
- dev_info(&pdev->dev, "AT91 i2c bus driver.\n");
+ dev_info(&pdev->dev, "AT91 TWI (I2C) bus driver [SCL %d Hz]\n",
+ clockrate);
return 0;
fail3:
@@ -295,6 +385,11 @@ static int at91_i2c_resume(struct platfo
#define at91_i2c_resume NULL
#endif
+/* I2C clock speed, in Hz 0-400kHz*/
+module_param(clockrate, uint, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(clockrate,
+ "SCL clock rate, 1000 to 400000 Hz (def: 100 kHz)");
+
/* work with "modprobe at91_i2c" from hotplugging or coldplugging */
MODULE_ALIAS("platform:at91_i2c");
@@ -323,5 +418,5 @@ module_init(at91_i2c_init);
module_exit(at91_i2c_exit);
MODULE_AUTHOR("Rick Bronson");
-MODULE_DESCRIPTION("I2C (TWI) driver for Atmel AT91");
+MODULE_DESCRIPTION("I2C (TWI) master driver for Atmel AT91");
MODULE_LICENSE("GPL");

23
target/linux/at91/patches/200-experimenta_adc_driver.patch
View File

@ -1,23 +0,0 @@
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -104,6 +104,10 @@ config ATMEL_TCB_CLKSRC_BLOCK
TC can be used for other purposes, such as PWM generation and
interval timing.
+config AT91_ADC
+ tristate "AT91 ADC converter"
+ depends on ARCH_AT91 && SYSFS
+
config IBM_ASM
tristate "Device driver for IBM RSA service processor"
depends on X86 && PCI && INPUT && EXPERIMENTAL
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -9,6 +9,7 @@ obj-$(CONFIG_AD525X_DPOT_SPI) += ad525x_
obj-$(CONFIG_ATMEL_PWM) += atmel_pwm.o
obj-$(CONFIG_ATMEL_SSC) += atmel-ssc.o
obj-$(CONFIG_ATMEL_TCLIB) += atmel_tclib.o
+obj-$(CONFIG_AT91_ADC) += at91-adc.o
obj-$(CONFIG_BMP085) += bmp085.o
obj-$(CONFIG_ICS932S401) += ics932s401.o
obj-$(CONFIG_LKDTM) += lkdtm.o

84
target/linux/at91/patches/600-usb_vbus_active_high.patch
View File

@ -1,84 +0,0 @@
--- a/arch/arm/mach-at91/at91cap9_devices.c
+++ b/arch/arm/mach-at91/at91cap9_devices.c
@@ -77,7 +77,7 @@ void __init at91_add_device_usbh(struct
/* Enable VBus control for UHP ports */
for (i = 0; i < data->ports; i++) {
if (data->vbus_pin[i])
- at91_set_gpio_output(data->vbus_pin[i], 0);
+ at91_set_gpio_output(data->vbus_pin[i], data->vbus_active_high);
}
usbh_data = *data;
--- a/arch/arm/mach-at91/at91sam9263_devices.c
+++ b/arch/arm/mach-at91/at91sam9263_devices.c
@@ -71,7 +71,7 @@ void __init at91_add_device_usbh(struct
/* Enable VBus control for UHP ports */
for (i = 0; i < data->ports; i++) {
if (data->vbus_pin[i])
- at91_set_gpio_output(data->vbus_pin[i], 0);
+ at91_set_gpio_output(data->vbus_pin[i], data->vbus_active_high);
}
usbh_data = *data;
--- a/arch/arm/mach-at91/at91sam9g45_devices.c
+++ b/arch/arm/mach-at91/at91sam9g45_devices.c
@@ -121,7 +121,7 @@ void __init at91_add_device_usbh_ohci(st
/* Enable VBus control for UHP ports */
for (i = 0; i < data->ports; i++) {
if (data->vbus_pin[i])
- at91_set_gpio_output(data->vbus_pin[i], 0);
+ at91_set_gpio_output(data->vbus_pin[i], data->vbus_active_high);
}
usbh_ohci_data = *data;
@@ -176,7 +176,7 @@ void __init at91_add_device_usbh_ehci(st
/* Enable VBus control for UHP ports */
for (i = 0; i < data->ports; i++) {
if (data->vbus_pin[i])
- at91_set_gpio_output(data->vbus_pin[i], 0);
+ at91_set_gpio_output(data->vbus_pin[i], data->vbus_active_high);
}
usbh_ehci_data = *data;
--- a/arch/arm/mach-at91/include/mach/board.h
+++ b/arch/arm/mach-at91/include/mach/board.h
@@ -96,8 +96,9 @@ extern void __init at91_add_device_eth(s
/* USB Host */
struct at91_usbh_data {
- u8 ports; /* number of ports on root hub */
- u8 vbus_pin[2]; /* port power-control pin */
+ u8 ports; /* number of ports on root hub */
+ u8 vbus_pin[2]; /* port power-control pin */
+ u8 vbus_active_high; /* true == vbus_pins are active high */
};
extern void __init at91_add_device_usbh(struct at91_usbh_data *data);
extern void __init at91_add_device_usbh_ohci(struct at91_usbh_data *data);
--- a/drivers/usb/host/ohci-at91.c
+++ b/drivers/usb/host/ohci-at91.c
@@ -277,14 +277,13 @@ static int ohci_hcd_at91_drv_probe(struc
if (pdata) {
/* REVISIT make the driver support per-port power switching,
* and also overcurrent detection. Here we assume the ports
- * are always powered while this driver is active, and use
- * active-low power switches.
+ * are always powered while this driver is active.
*/
for (i = 0; i < ARRAY_SIZE(pdata->vbus_pin); i++) {
if (pdata->vbus_pin[i] <= 0)
continue;
gpio_request(pdata->vbus_pin[i], "ohci_vbus");
- gpio_direction_output(pdata->vbus_pin[i], 0);
+ gpio_direction_output(pdata->vbus_pin[i], pdata->vbus_active_high);
}
}
@@ -301,7 +300,7 @@ static int ohci_hcd_at91_drv_remove(stru
for (i = 0; i < ARRAY_SIZE(pdata->vbus_pin); i++) {
if (pdata->vbus_pin[i] <= 0)
continue;
- gpio_direction_output(pdata->vbus_pin[i], 1);
+ gpio_direction_output(pdata->vbus_pin[i], !pdata->vbus_active_high);
gpio_free(pdata->vbus_pin[i]);
}
}