From ca86ebf3fddbdfa8aecc4b887ef059948ee79621 Mon Sep 17 00:00:00 2001 From: Biwen Li Date: Wed, 17 Apr 2019 18:59:08 +0800 Subject: [PATCH] usb: support layerscape This is an integrated patch of usb for layerscape Signed-off-by: Anurag Kumar Vulisha Signed-off-by: Biwen Li Signed-off-by: Catalin Marinas Signed-off-by: Changming Huang Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman Signed-off-by: Li Yang Signed-off-by: Marc Zyngier Signed-off-by: Nikhil Badola Signed-off-by: Rajesh Bhagat Signed-off-by: Ramneek Mehresh Signed-off-by: Ran Wang Signed-off-by: Roger Quadros Signed-off-by: Shengzhou Liu Signed-off-by: Suresh Gupta Signed-off-by: Yangbo Lu Signed-off-by: Yinbo Zhu Signed-off-by: Zhao Chenhui --- arch/arm64/include/asm/io.h | 28 +++ drivers/usb/common/common.c | 50 +++++ drivers/usb/core/usb.c | 1 + drivers/usb/dwc3/core.c | 167 ++++++++++++++++ drivers/usb/dwc3/core.h | 58 ++++++ drivers/usb/dwc3/ep0.c | 4 +- drivers/usb/dwc3/gadget.c | 7 + drivers/usb/dwc3/host.c | 9 + drivers/usb/gadget/udc/fsl_udc_core.c | 46 +++-- drivers/usb/gadget/udc/fsl_usb2_udc.h | 16 +- drivers/usb/host/Kconfig | 2 +- drivers/usb/host/ehci-fsl.c | 276 +++++++++++++++++++++++--- drivers/usb/host/ehci-fsl.h | 3 + drivers/usb/host/ehci-hub.c | 2 + drivers/usb/host/ehci.h | 3 + drivers/usb/host/fsl-mph-dr-of.c | 11 + drivers/usb/host/xhci-hub.c | 22 ++ drivers/usb/host/xhci-plat.c | 16 +- drivers/usb/host/xhci-ring.c | 28 ++- drivers/usb/host/xhci.c | 37 +++- drivers/usb/host/xhci.h | 10 +- drivers/usb/phy/phy-fsl-usb.c | 59 ++++-- drivers/usb/phy/phy-fsl-usb.h | 8 + include/linux/usb.h | 1 + include/linux/usb/of.h | 2 + 25 files changed, 780 insertions(+), 86 deletions(-) --- a/arch/arm64/include/asm/io.h +++ b/arch/arm64/include/asm/io.h @@ -210,6 +210,34 @@ extern void __iomem *ioremap_cache(phys_ #define iowrite32be(v,p) ({ __iowmb(); __raw_writel((__force __u32)cpu_to_be32(v), p); }) #define iowrite64be(v,p) ({ __iowmb(); __raw_writeq((__force __u64)cpu_to_be64(v), p); }) +/* access ports */ +#define setbits32(_addr, _v) iowrite32be(ioread32be(_addr) | (_v), (_addr)) +#define clrbits32(_addr, _v) iowrite32be(ioread32be(_addr) & ~(_v), (_addr)) + +#define setbits16(_addr, _v) iowrite16be(ioread16be(_addr) | (_v), (_addr)) +#define clrbits16(_addr, _v) iowrite16be(ioread16be(_addr) & ~(_v), (_addr)) + +#define setbits8(_addr, _v) iowrite8(ioread8(_addr) | (_v), (_addr)) +#define clrbits8(_addr, _v) iowrite8(ioread8(_addr) & ~(_v), (_addr)) + +/* Clear and set bits in one shot. These macros can be used to clear and + * set multiple bits in a register using a single read-modify-write. These + * macros can also be used to set a multiple-bit bit pattern using a mask, + * by specifying the mask in the 'clear' parameter and the new bit pattern + * in the 'set' parameter. + */ + +#define clrsetbits_be32(addr, clear, set) \ + iowrite32be((ioread32be(addr) & ~(clear)) | (set), (addr)) +#define clrsetbits_le32(addr, clear, set) \ + iowrite32le((ioread32le(addr) & ~(clear)) | (set), (addr)) +#define clrsetbits_be16(addr, clear, set) \ + iowrite16be((ioread16be(addr) & ~(clear)) | (set), (addr)) +#define clrsetbits_le16(addr, clear, set) \ + iowrite16le((ioread16le(addr) & ~(clear)) | (set), (addr)) +#define clrsetbits_8(addr, clear, set) \ + iowrite8((ioread8(addr) & ~(clear)) | (set), (addr)) + #include /* --- a/drivers/usb/common/common.c +++ b/drivers/usb/common/common.c @@ -105,6 +105,56 @@ static const char *const usb_dr_modes[] [USB_DR_MODE_OTG] = "otg", }; +/** + * of_usb_get_dr_mode - Get dual role mode for given device_node + * @np: Pointer to the given device_node + * + * The function gets phy interface string from property 'dr_mode', + * and returns the correspondig enum usb_dr_mode + */ +enum usb_dr_mode of_usb_get_dr_mode(struct device_node *np) +{ + const char *dr_mode; + int err, i; + + err = of_property_read_string(np, "dr_mode", &dr_mode); + if (err < 0) + return USB_DR_MODE_UNKNOWN; + + for (i = 0; i < ARRAY_SIZE(usb_dr_modes); i++) + if (!strcmp(dr_mode, usb_dr_modes[i])) + return i; + + return USB_DR_MODE_UNKNOWN; +} +EXPORT_SYMBOL_GPL(of_usb_get_dr_mode); + +/** + * of_usb_get_maximum_speed - Get maximum requested speed for a given USB + * controller. + * @np: Pointer to the given device_node + * + * The function gets the maximum speed string from property "maximum-speed", + * and returns the corresponding enum usb_device_speed. + */ +enum usb_device_speed of_usb_get_maximum_speed(struct device_node *np) +{ + const char *maximum_speed; + int err; + int i; + + err = of_property_read_string(np, "maximum-speed", &maximum_speed); + if (err < 0) + return USB_SPEED_UNKNOWN; + + for (i = 0; i < ARRAY_SIZE(speed_names); i++) + if (strcmp(maximum_speed, speed_names[i]) == 0) + return i; + + return USB_SPEED_UNKNOWN; +} +EXPORT_SYMBOL_GPL(of_usb_get_maximum_speed); + static enum usb_dr_mode usb_get_dr_mode_from_string(const char *str) { int ret; --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -593,6 +593,7 @@ struct usb_device *usb_alloc_dev(struct dev->dev.dma_mask = bus->sysdev->dma_mask; dev->dev.dma_pfn_offset = bus->sysdev->dma_pfn_offset; set_dev_node(&dev->dev, dev_to_node(bus->sysdev)); + dev->dev.of_node = bus->controller->of_node; dev->state = USB_STATE_ATTACHED; dev->lpm_disable_count = 1; atomic_set(&dev->urbnum, 0); --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -103,6 +103,41 @@ static int dwc3_get_dr_mode(struct dwc3 static void dwc3_event_buffers_cleanup(struct dwc3 *dwc); static int dwc3_event_buffers_setup(struct dwc3 *dwc); +/* + * dwc3_power_of_all_roothub_ports - Power off all Root hub ports + * @dwc3: Pointer to our controller context structure + */ +static void dwc3_power_off_all_roothub_ports(struct dwc3 *dwc) +{ + int i, port_num; + u32 reg, op_regs_base, offset; + void __iomem *xhci_regs; + + /* xhci regs is not mapped yet, do it temperary here */ + if (dwc->xhci_resources[0].start) { + xhci_regs = ioremap(dwc->xhci_resources[0].start, + DWC3_XHCI_REGS_END); + if (IS_ERR(xhci_regs)) { + dev_err(dwc->dev, "Failed to ioremap xhci_regs\n"); + return; + } + + op_regs_base = HC_LENGTH(readl(xhci_regs)); + reg = readl(xhci_regs + XHCI_HCSPARAMS1); + port_num = HCS_MAX_PORTS(reg); + + for (i = 1; i <= port_num; i++) { + offset = op_regs_base + XHCI_PORTSC_BASE + 0x10*(i-1); + reg = readl(xhci_regs + offset); + reg &= ~PORT_POWER; + writel(reg, xhci_regs + offset); + } + + iounmap(xhci_regs); + } else + dev_err(dwc->dev, "xhci base reg invalid\n"); +} + static void dwc3_set_prtcap(struct dwc3 *dwc, u32 mode) { u32 reg; @@ -111,6 +146,15 @@ static void dwc3_set_prtcap(struct dwc3 reg &= ~(DWC3_GCTL_PRTCAPDIR(DWC3_GCTL_PRTCAP_OTG)); reg |= DWC3_GCTL_PRTCAPDIR(mode); dwc3_writel(dwc->regs, DWC3_GCTL, reg); + + /* + * We have to power off all Root hub ports immediately after DWC3 set + * to host mode to avoid VBUS glitch happen when xhci get reset later. + */ + if (dwc->host_vbus_glitches) { + if (mode == DWC3_GCTL_PRTCAP_HOST) + dwc3_power_off_all_roothub_ports(dwc); + } } static void __dwc3_set_mode(struct work_struct *work) @@ -765,6 +809,96 @@ static void dwc3_core_setup_global_contr static int dwc3_core_get_phy(struct dwc3 *dwc); static int dwc3_core_ulpi_init(struct dwc3 *dwc); +/* set global soc bus configuration registers */ +static void dwc3_set_soc_bus_cfg(struct dwc3 *dwc) +{ + struct device *dev = dwc->dev; + u32 *vals; + u32 cfg; + int ntype; + int ret; + int i; + + cfg = dwc3_readl(dwc->regs, DWC3_GSBUSCFG0); + + /* + * Handle property "snps,incr-burst-type-adjustment". + * Get the number of value from this property: + * result <= 0, means this property is not supported. + * result = 1, means INCRx burst mode supported. + * result > 1, means undefined length burst mode supported. + */ + ntype = device_property_read_u32_array(dev, + "snps,incr-burst-type-adjustment", NULL, 0); + if (ntype > 0) { + vals = kcalloc(ntype, sizeof(u32), GFP_KERNEL); + if (!vals) { + dev_err(dev, "Error to get memory\n"); + return; + } + /* Get INCR burst type, and parse it */ + ret = device_property_read_u32_array(dev, + "snps,incr-burst-type-adjustment", vals, ntype); + if (ret) { + dev_err(dev, "Error to get property\n"); + return; + } + *(dwc->incrx_type + 1) = vals[0]; + if (ntype > 1) { + *dwc->incrx_type = 1; + for (i = 1; i < ntype; i++) { + if (vals[i] > *(dwc->incrx_type + 1)) + *(dwc->incrx_type + 1) = vals[i]; + } + } else + *dwc->incrx_type = 0; + + /* Enable Undefined Length INCR Burst and Enable INCRx Burst */ + cfg &= ~DWC3_GSBUSCFG0_INCRBRST_MASK; + if (*dwc->incrx_type) + cfg |= DWC3_GSBUSCFG0_INCRBRSTENA; + switch (*(dwc->incrx_type + 1)) { + case 256: + cfg |= DWC3_GSBUSCFG0_INCR256BRSTENA; + break; + case 128: + cfg |= DWC3_GSBUSCFG0_INCR128BRSTENA; + break; + case 64: + cfg |= DWC3_GSBUSCFG0_INCR64BRSTENA; + break; + case 32: + cfg |= DWC3_GSBUSCFG0_INCR32BRSTENA; + break; + case 16: + cfg |= DWC3_GSBUSCFG0_INCR16BRSTENA; + break; + case 8: + cfg |= DWC3_GSBUSCFG0_INCR8BRSTENA; + break; + case 4: + cfg |= DWC3_GSBUSCFG0_INCR4BRSTENA; + break; + case 1: + break; + default: + dev_err(dev, "Invalid property\n"); + break; + } + } + + /* Handle usb snooping */ + if (dwc->dma_coherent) { + cfg &= ~DWC3_GSBUSCFG0_SNP_MASK; + cfg |= (AXI3_CACHE_TYPE_SNP << DWC3_GSBUSCFG0_DATARD_SHIFT) | + (AXI3_CACHE_TYPE_SNP << DWC3_GSBUSCFG0_DESCRD_SHIFT) | + (AXI3_CACHE_TYPE_SNP << DWC3_GSBUSCFG0_DATAWR_SHIFT) | + (AXI3_CACHE_TYPE_SNP << DWC3_GSBUSCFG0_DESCWR_SHIFT); + } + + dwc3_writel(dwc->regs, DWC3_GSBUSCFG0, cfg); +} + /** * dwc3_core_init - Low-level initialization of DWC3 Core * @dwc: Pointer to our controller context structure @@ -827,6 +961,8 @@ static int dwc3_core_init(struct dwc3 *d /* Adjust Frame Length */ dwc3_frame_length_adjustment(dwc); + dwc3_set_soc_bus_cfg(dwc); + usb_phy_set_suspend(dwc->usb2_phy, 0); usb_phy_set_suspend(dwc->usb3_phy, 0); ret = phy_power_on(dwc->usb2_generic_phy); @@ -870,6 +1006,22 @@ static int dwc3_core_init(struct dwc3 *d dwc3_writel(dwc->regs, DWC3_GUCTL1, reg); } + if (dwc->dr_mode == USB_DR_MODE_HOST || + dwc->dr_mode == USB_DR_MODE_OTG) { + reg = dwc3_readl(dwc->regs, DWC3_GUCTL); + + /* + * Enable Auto retry Feature to make the controller operating in + * Host mode on seeing transaction errors(CRC errors or internal + * overrun scenerios) on IN transfers to reply to the device + * with a non-terminating retry ACK (i.e, an ACK transcation + * packet with Retry=1 & Nump != 0) + */ + reg |= DWC3_GUCTL_HSTINAUTORETRY; + + dwc3_writel(dwc->regs, DWC3_GUCTL, reg); + } + return 0; err4: @@ -1076,6 +1228,8 @@ static void dwc3_get_properties(struct d &hird_threshold); dwc->usb3_lpm_capable = device_property_read_bool(dev, "snps,usb3_lpm_capable"); + dwc->dma_coherent = device_property_read_bool(dev, + "dma-coherent"); dwc->disable_scramble_quirk = device_property_read_bool(dev, "snps,disable_scramble_quirk"); @@ -1108,8 +1262,16 @@ static void dwc3_get_properties(struct d dwc->dis_tx_ipgap_linecheck_quirk = device_property_read_bool(dev, "snps,dis-tx-ipgap-linecheck-quirk"); + dwc->quirk_reverse_in_out = device_property_read_bool(dev, + "snps,quirk_reverse_in_out"); + dwc->quirk_stop_transfer_in_block = device_property_read_bool(dev, + "snps,quirk_stop_transfer_in_block"); + dwc->quirk_stop_ep_in_u1 = device_property_read_bool(dev, + "snps,quirk_stop_ep_in_u1"); dwc->tx_de_emphasis_quirk = device_property_read_bool(dev, "snps,tx_de_emphasis_quirk"); + dwc->disable_devinit_u1u2_quirk = device_property_read_bool(dev, + "snps,disable_devinit_u1u2"); device_property_read_u8(dev, "snps,tx_de_emphasis", &tx_de_emphasis); device_property_read_string(dev, "snps,hsphy_interface", @@ -1120,6 +1282,9 @@ static void dwc3_get_properties(struct d dwc->dis_metastability_quirk = device_property_read_bool(dev, "snps,dis_metastability_quirk"); + dwc->host_vbus_glitches = device_property_read_bool(dev, + "snps,host-vbus-glitches"); + dwc->lpm_nyet_threshold = lpm_nyet_threshold; dwc->tx_de_emphasis = tx_de_emphasis; @@ -1371,12 +1536,14 @@ static int dwc3_resume_common(struct dwc switch (dwc->dr_mode) { case USB_DR_MODE_PERIPHERAL: + dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_DEVICE); case USB_DR_MODE_OTG: spin_lock_irqsave(&dwc->lock, flags); dwc3_gadget_resume(dwc); spin_unlock_irqrestore(&dwc->lock, flags); /* FALLTHROUGH */ case USB_DR_MODE_HOST: + dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_HOST); default: /* do nothing */ break; --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -161,6 +161,32 @@ /* Bit fields */ +/* Global SoC Bus Configuration Register 0 */ +#define AXI3_CACHE_TYPE_AW 0x8 /* write allocate */ +#define AXI3_CACHE_TYPE_AR 0x4 /* read allocate */ +#define AXI3_CACHE_TYPE_SNP 0x2 /* cacheable */ +#define AXI3_CACHE_TYPE_BUF 0x1 /* bufferable */ +#define DWC3_GSBUSCFG0_DATARD_SHIFT 28 +#define DWC3_GSBUSCFG0_DESCRD_SHIFT 24 +#define DWC3_GSBUSCFG0_DATAWR_SHIFT 20 +#define DWC3_GSBUSCFG0_DESCWR_SHIFT 16 +#define DWC3_GSBUSCFG0_SNP_MASK 0xffff0000 +#define DWC3_GSBUSCFG0_DATABIGEND (1 << 11) +#define DWC3_GSBUSCFG0_DESCBIGEND (1 << 10) +#define DWC3_GSBUSCFG0_INCR256BRSTENA (1 << 7) /* INCR256 burst */ +#define DWC3_GSBUSCFG0_INCR128BRSTENA (1 << 6) /* INCR128 burst */ +#define DWC3_GSBUSCFG0_INCR64BRSTENA (1 << 5) /* INCR64 burst */ +#define DWC3_GSBUSCFG0_INCR32BRSTENA (1 << 4) /* INCR32 burst */ +#define DWC3_GSBUSCFG0_INCR16BRSTENA (1 << 3) /* INCR16 burst */ +#define DWC3_GSBUSCFG0_INCR8BRSTENA (1 << 2) /* INCR8 burst */ +#define DWC3_GSBUSCFG0_INCR4BRSTENA (1 << 1) /* INCR4 burst */ +#define DWC3_GSBUSCFG0_INCRBRSTENA (1 << 0) /* undefined length enable */ +#define DWC3_GSBUSCFG0_INCRBRST_MASK 0xff + +/* Global SoC Bus Configuration Register 1 */ +#define DWC3_GSBUSCFG1_1KPAGEENA (1 << 12) /* 1K page boundary enable */ +#define DWC3_GSBUSCFG1_PTRANSLIMIT_MASK 0xf00 + /* Global Debug Queue/FIFO Space Available Register */ #define DWC3_GDBGFIFOSPACE_NUM(n) ((n) & 0x1f) #define DWC3_GDBGFIFOSPACE_TYPE(n) (((n) << 5) & 0x1e0) @@ -205,6 +231,9 @@ #define DWC3_GCTL_GBLHIBERNATIONEN BIT(1) #define DWC3_GCTL_DSBLCLKGTNG BIT(0) +/* Global User Control Register */ +#define DWC3_GUCTL_HSTINAUTORETRY BIT(14) + /* Global User Control 1 Register */ #define DWC3_GUCTL1_TX_IPGAP_LINECHECK_DIS BIT(28) #define DWC3_GUCTL1_DEV_L1_EXIT_BY_HW BIT(24) @@ -477,6 +506,14 @@ #define DWC3_DEV_IMOD_INTERVAL_SHIFT 0 #define DWC3_DEV_IMOD_INTERVAL_MASK (0xffff << 0) +/* Partial XHCI Register and Bit fields for quirk */ +#define XHCI_HCSPARAMS1 0x4 +#define XHCI_PORTSC_BASE 0x400 +#define PORT_POWER (1 << 9) +#define HCS_MAX_PORTS(p) (((p) >> 24) & 0x7f) +#define XHCI_HC_LENGTH(p) (((p)>>00)&0x00ff) +#define HC_LENGTH(p) XHCI_HC_LENGTH(p) + /* Structures */ struct dwc3_trb; @@ -788,6 +825,7 @@ struct dwc3_scratchpad_array { * @regs: base address for our registers * @regs_size: address space size * @fladj: frame length adjustment + * @incrx_type: INCR burst type adjustment * @irq_gadget: peripheral controller's IRQ number * @nr_scratch: number of scratch buffers * @u1u2: only used on revisions <1.83a for workaround @@ -843,6 +881,7 @@ struct dwc3_scratchpad_array { * @setup_packet_pending: true when there's a Setup Packet in FIFO. Workaround * @three_stage_setup: set if we perform a three phase setup * @usb3_lpm_capable: set if hadrware supports Link Power Management + * @dma_coherent: set if hadrware supports DMA snoop * @disable_scramble_quirk: set if we enable the disable scramble quirk * @u2exit_lfps_quirk: set if we enable u2exit lfps quirk * @u2ss_inp3_quirk: set if we enable P3 OK for U2/SS Inactive quirk @@ -922,6 +961,12 @@ struct dwc3 { enum usb_phy_interface hsphy_mode; u32 fladj; + /* + * For INCR burst type. + * First field: for undefined length INCR burst type enable. + * Second field: for INCRx burst type enable + */ + u32 incrx_type[2]; u32 irq_gadget; u32 nr_scratch; u32 u1u2; @@ -1006,6 +1051,7 @@ struct dwc3 { unsigned setup_packet_pending:1; unsigned three_stage_setup:1; unsigned usb3_lpm_capable:1; + unsigned dma_coherent:1; unsigned disable_scramble_quirk:1; unsigned u2exit_lfps_quirk:1; @@ -1025,6 +1071,11 @@ struct dwc3 { unsigned tx_de_emphasis_quirk:1; unsigned tx_de_emphasis:2; + unsigned disable_devinit_u1u2_quirk:1; + unsigned quirk_reverse_in_out:1; + unsigned quirk_stop_transfer_in_block:1; + unsigned quirk_stop_ep_in_u1:1; + unsigned host_vbus_glitches:1; unsigned dis_metastability_quirk:1; --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -391,7 +391,7 @@ static int dwc3_ep0_handle_u1(struct dwc return -EINVAL; reg = dwc3_readl(dwc->regs, DWC3_DCTL); - if (set) + if (set && !dwc->disable_devinit_u1u2_quirk) reg |= DWC3_DCTL_INITU1ENA; else reg &= ~DWC3_DCTL_INITU1ENA; @@ -413,7 +413,7 @@ static int dwc3_ep0_handle_u2(struct dwc return -EINVAL; reg = dwc3_readl(dwc->regs, DWC3_DCTL); - if (set) + if (set && !dwc->disable_devinit_u1u2_quirk) reg |= DWC3_DCTL_INITU2ENA; else reg &= ~DWC3_DCTL_INITU2ENA; --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -3220,6 +3220,7 @@ int dwc3_gadget_init(struct dwc3 *dwc) { int ret; int irq; + u32 reg; irq = dwc3_gadget_get_irq(dwc); if (irq < 0) { @@ -3298,6 +3299,12 @@ int dwc3_gadget_init(struct dwc3 *dwc) dwc3_gadget_set_speed(&dwc->gadget, dwc->maximum_speed); + if (dwc->disable_devinit_u1u2_quirk) { + reg = dwc3_readl(dwc->regs, DWC3_DCTL); + reg &= ~(DWC3_DCTL_INITU1ENA | DWC3_DCTL_INITU2ENA); + dwc3_writel(dwc->regs, DWC3_DCTL, reg); + } + return 0; err4: --- a/drivers/usb/dwc3/host.c +++ b/drivers/usb/dwc3/host.c @@ -98,6 +98,15 @@ int dwc3_host_init(struct dwc3 *dwc) memset(props, 0, sizeof(struct property_entry) * ARRAY_SIZE(props)); + if (dwc->quirk_reverse_in_out) + props[prop_idx++].name = "quirk-reverse-in-out"; + + if (dwc->quirk_stop_transfer_in_block) + props[prop_idx++].name = "quirk-stop-transfer-in-block"; + + if (dwc->quirk_stop_ep_in_u1) + props[prop_idx++].name = "quirk-stop-ep-in-u1"; + if (dwc->usb3_lpm_capable) props[prop_idx++].name = "usb3-lpm-capable"; --- a/drivers/usb/gadget/udc/fsl_udc_core.c +++ b/drivers/usb/gadget/udc/fsl_udc_core.c @@ -198,7 +198,11 @@ __acquires(ep->udc->lock) spin_unlock(&ep->udc->lock); - usb_gadget_giveback_request(&ep->ep, &req->req); + /* this complete() should a func implemented by gadget layer, + * eg fsg->bulk_in_complete() + */ + if (req->req.complete) + usb_gadget_giveback_request(&ep->ep, &req->req); spin_lock(&ep->udc->lock); ep->stopped = stopped; @@ -245,10 +249,10 @@ static int dr_controller_setup(struct fs if (udc->pdata->have_sysif_regs) { if (udc->pdata->controller_ver) { /* controller version 1.6 or above */ - ctrl = __raw_readl(&usb_sys_regs->control); + ctrl = ioread32be(&usb_sys_regs->control); ctrl &= ~USB_CTRL_UTMI_PHY_EN; ctrl |= USB_CTRL_USB_EN; - __raw_writel(ctrl, &usb_sys_regs->control); + iowrite32be(ctrl, &usb_sys_regs->control); } } portctrl |= PORTSCX_PTS_ULPI; @@ -257,13 +261,14 @@ static int dr_controller_setup(struct fs portctrl |= PORTSCX_PTW_16BIT; /* fall through */ case FSL_USB2_PHY_UTMI: + case FSL_USB2_PHY_UTMI_DUAL: if (udc->pdata->have_sysif_regs) { if (udc->pdata->controller_ver) { /* controller version 1.6 or above */ - ctrl = __raw_readl(&usb_sys_regs->control); + ctrl = ioread32be(&usb_sys_regs->control); ctrl |= (USB_CTRL_UTMI_PHY_EN | USB_CTRL_USB_EN); - __raw_writel(ctrl, &usb_sys_regs->control); + iowrite32be(ctrl, &usb_sys_regs->control); mdelay(FSL_UTMI_PHY_DLY); /* Delay for UTMI PHY CLK to become stable - 10ms*/ } @@ -329,22 +334,22 @@ static int dr_controller_setup(struct fs /* Config control enable i/o output, cpu endian register */ #ifndef CONFIG_ARCH_MXC if (udc->pdata->have_sysif_regs) { - ctrl = __raw_readl(&usb_sys_regs->control); + ctrl = ioread32be(&usb_sys_regs->control); ctrl |= USB_CTRL_IOENB; - __raw_writel(ctrl, &usb_sys_regs->control); + iowrite32be(ctrl, &usb_sys_regs->control); } #endif -#if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE) +#if !defined(CONFIG_NOT_COHERENT_CACHE) /* Turn on cache snooping hardware, since some PowerPC platforms * wholly rely on hardware to deal with cache coherent. */ if (udc->pdata->have_sysif_regs) { /* Setup Snooping for all the 4GB space */ tmp = SNOOP_SIZE_2GB; /* starts from 0x0, size 2G */ - __raw_writel(tmp, &usb_sys_regs->snoop1); + iowrite32be(tmp, &usb_sys_regs->snoop1); tmp |= 0x80000000; /* starts from 0x8000000, size 2G */ - __raw_writel(tmp, &usb_sys_regs->snoop2); + iowrite32be(tmp, &usb_sys_regs->snoop2); } #endif @@ -1056,7 +1061,7 @@ static int fsl_ep_fifo_status(struct usb struct ep_queue_head *qh; ep = container_of(_ep, struct fsl_ep, ep); - if (!_ep || (!ep->ep.desc && ep_index(ep) != 0)) + if (!_ep || !ep->ep.desc || (ep_index(ep) == 0)) return -ENODEV; udc = (struct fsl_udc *)ep->udc; @@ -1598,14 +1603,13 @@ static int process_ep_req(struct fsl_udc struct fsl_req *curr_req) { struct ep_td_struct *curr_td; - int td_complete, actual, remaining_length, j, tmp; + int actual, remaining_length, j, tmp; int status = 0; int errors = 0; struct ep_queue_head *curr_qh = &udc->ep_qh[pipe]; int direction = pipe % 2; curr_td = curr_req->head; - td_complete = 0; actual = curr_req->req.length; for (j = 0; j < curr_req->dtd_count; j++) { @@ -1650,11 +1654,9 @@ static int process_ep_req(struct fsl_udc status = -EPROTO; break; } else { - td_complete++; break; } } else { - td_complete++; VDBG("dTD transmitted successful"); } @@ -1697,7 +1699,7 @@ static void dtd_complete_irq(struct fsl_ curr_ep = get_ep_by_pipe(udc, i); /* If the ep is configured */ - if (!curr_ep->ep.name) { + if (strncmp(curr_ep->name, "ep", 2)) { WARNING("Invalid EP?"); continue; } @@ -2419,10 +2421,12 @@ static int fsl_udc_probe(struct platform usb_sys_regs = (void *)dr_regs + USB_DR_SYS_OFFSET; #endif +#ifdef CONFIG_ARCH_MXC /* Initialize USB clocks */ ret = fsl_udc_clk_init(pdev); if (ret < 0) goto err_iounmap_noclk; +#endif /* Read Device Controller Capability Parameters register */ dccparams = fsl_readl(&dr_regs->dccparams); @@ -2462,9 +2466,11 @@ static int fsl_udc_probe(struct platform dr_controller_setup(udc_controller); } +#ifdef CONFIG_ARCH_MXC ret = fsl_udc_clk_finalize(pdev); if (ret) goto err_free_irq; +#endif /* Setup gadget structure */ udc_controller->gadget.ops = &fsl_gadget_ops; @@ -2477,6 +2483,7 @@ static int fsl_udc_probe(struct platform /* Setup gadget.dev and register with kernel */ dev_set_name(&udc_controller->gadget.dev, "gadget"); udc_controller->gadget.dev.of_node = pdev->dev.of_node; + set_dma_ops(&udc_controller->gadget.dev, pdev->dev.dma_ops); if (!IS_ERR_OR_NULL(udc_controller->transceiver)) udc_controller->gadget.is_otg = 1; @@ -2528,7 +2535,9 @@ err_free_irq: err_iounmap: if (pdata->exit) pdata->exit(pdev); +#ifdef CONFIG_ARCH_MXC fsl_udc_clk_release(); +#endif err_iounmap_noclk: iounmap(dr_regs); err_release_mem_region: @@ -2556,8 +2565,9 @@ static int fsl_udc_remove(struct platfor udc_controller->done = &done; usb_del_gadget_udc(&udc_controller->gadget); +#ifdef CONFIG_ARCH_MXC fsl_udc_clk_release(); - +#endif /* DR has been stopped in usb_gadget_unregister_driver() */ remove_proc_file(); --- a/drivers/usb/gadget/udc/fsl_usb2_udc.h +++ b/drivers/usb/gadget/udc/fsl_usb2_udc.h @@ -20,6 +20,10 @@ #define USB_MAX_CTRL_PAYLOAD 64 #define USB_DR_SYS_OFFSET 0x400 +#ifdef CONFIG_SOC_LS1021A +#undef CONFIG_ARCH_MXC +#endif + /* USB DR device mode registers (Little Endian) */ struct usb_dr_device { /* Capability register */ @@ -597,18 +601,6 @@ struct platform_device; int fsl_udc_clk_init(struct platform_device *pdev); int fsl_udc_clk_finalize(struct platform_device *pdev); void fsl_udc_clk_release(void); -#else -static inline int fsl_udc_clk_init(struct platform_device *pdev) -{ - return 0; -} -static inline int fsl_udc_clk_finalize(struct platform_device *pdev) -{ - return 0; -} -static inline void fsl_udc_clk_release(void) -{ -} #endif #endif --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -165,7 +165,7 @@ config XPS_USB_HCD_XILINX config USB_EHCI_FSL tristate "Support for Freescale PPC on-chip EHCI USB controller" - depends on FSL_SOC + depends on USB_EHCI_HCD select USB_EHCI_ROOT_HUB_TT ---help--- Variation of ARC USB block used in some Freescale chips. --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -36,15 +36,126 @@ #include #include #include +#include + +#ifdef CONFIG_PM +#include +#endif #include "ehci.h" #include "ehci-fsl.h" +#define FSL_USB_PHY_ADDR 0xffe214000 + +struct ccsr_usb_port_ctrl { + u32 ctrl; + u32 drvvbuscfg; + u32 pwrfltcfg; + u32 sts; + u8 res_14[0xc]; + u32 bistcfg; + u32 biststs; + u32 abistcfg; + u32 abiststs; + u8 res_30[0x10]; + u32 xcvrprg; + u32 anaprg; + u32 anadrv; + u32 anasts; +}; + +struct ccsr_usb_phy { + u32 id; + struct ccsr_usb_port_ctrl port1; + u8 res_50[0xc]; + u32 tvr; + u32 pllprg[4]; + u8 res_70[0x4]; + u32 anaccfg; + u32 dbg; + u8 res_7c[0x4]; + struct ccsr_usb_port_ctrl port2; + u8 res_dc[0x334]; +}; + #define DRIVER_DESC "Freescale EHCI Host controller driver" #define DRV_NAME "ehci-fsl" static struct hc_driver __read_mostly fsl_ehci_hc_driver; +struct ehci_fsl { + struct ehci_hcd ehci; + +#ifdef CONFIG_PM +struct ehci_regs saved_regs; +struct ccsr_usb_phy saved_phy_regs; +/* Saved USB PHY settings, need to restore after deep sleep. */ +u32 usb_ctrl; +#endif + /* + * store current hcd state for otg; + * have_hcd is true when host drv al already part of otg framework, + * otherwise false; + * hcd_add is true when otg framework wants to add host + * drv as part of otg;flase when it wants to remove it + */ +unsigned have_hcd:1; +unsigned hcd_add:1; +}; + +static struct ehci_fsl *hcd_to_ehci_fsl(struct usb_hcd *hcd) +{ +struct ehci_hcd *ehci = hcd_to_ehci(hcd); + +return container_of(ehci, struct ehci_fsl, ehci); +} + +#if defined(CONFIG_FSL_USB2_OTG) || defined(CONFIG_FSL_USB2_OTG_MODULE) +static void do_change_hcd(struct work_struct *work) +{ + struct ehci_hcd *ehci = container_of(work, struct ehci_hcd, + change_hcd_work); + struct usb_hcd *hcd = ehci_to_hcd(ehci); + struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd); + void __iomem *non_ehci = hcd->regs; + int retval; + + if (ehci_fsl->hcd_add && !ehci_fsl->have_hcd) { + writel(USBMODE_CM_HOST, non_ehci + FSL_SOC_USB_USBMODE); + /* host, gadget and otg share same int line */ + retval = usb_add_hcd(hcd, hcd->irq, IRQF_SHARED); + if (retval == 0) + ehci_fsl->have_hcd = 1; + } else if (!ehci_fsl->hcd_add && ehci_fsl->have_hcd) { + usb_remove_hcd(hcd); + ehci_fsl->have_hcd = 0; + } +} +#endif + +#if defined(CONFIG_FSL_USB2_OTG) || defined(CONFIG_FSL_USB2_OTG_MODULE) +static void do_change_hcd(struct work_struct *work) +{ + struct ehci_hcd *ehci = container_of(work, struct ehci_hcd, + change_hcd_work); + struct usb_hcd *hcd = ehci_to_hcd(ehci); + struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd); + void __iomem *non_ehci = hcd->regs; + int retval; + + if (ehci_fsl->hcd_add && !ehci_fsl->have_hcd) { + writel(USBMODE_CM_HOST, non_ehci + FSL_SOC_USB_USBMODE); + /* host, gadget and otg share same int line */ + retval = usb_add_hcd(hcd, hcd->irq, IRQF_SHARED); + if (retval == 0) + ehci_fsl->have_hcd = 1; + } else if (!ehci_fsl->hcd_add && ehci_fsl->have_hcd) { + usb_remove_hcd(hcd); + ehci_fsl->have_hcd = 0; + } +} +#endif + /* configure so an HC device and id are always provided */ /* always called with process context; sleeping is OK */ @@ -131,6 +242,12 @@ static int fsl_ehci_drv_probe(struct pla clrsetbits_be32(hcd->regs + FSL_SOC_USB_CTRL, CONTROL_REGISTER_W1C_MASK, 0x4); + /* Set USB_EN bit to select ULPI phy for USB controller version 2.5 */ + if (pdata->controller_ver == FSL_USB_VER_2_5 && + pdata->phy_mode == FSL_USB2_PHY_ULPI) + iowrite32be(USB_CTRL_USB_EN, hcd->regs + FSL_SOC_USB_CTRL); + + /* * Enable UTMI phy and program PTS field in UTMI mode before asserting * controller reset for USB Controller version 2.5 @@ -143,16 +260,20 @@ static int fsl_ehci_drv_probe(struct pla /* Don't need to set host mode here. It will be done by tdi_reset() */ - retval = usb_add_hcd(hcd, irq, IRQF_SHARED); + retval = usb_add_hcd(hcd, irq, IRQF_SHARED | IRQF_NO_SUSPEND); if (retval != 0) goto err2; device_wakeup_enable(hcd->self.controller); -#ifdef CONFIG_USB_OTG +#if defined(CONFIG_FSL_USB2_OTG) || defined(CONFIG_FSL_USB2_OTG_MODULE) if (pdata->operating_mode == FSL_USB2_DR_OTG) { struct ehci_hcd *ehci = hcd_to_ehci(hcd); + struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd); hcd->usb_phy = usb_get_phy(USB_PHY_TYPE_USB2); + + INIT_WORK(&ehci->change_hcd_work, do_change_hcd); + dev_dbg(&pdev->dev, "hcd=0x%p ehci=0x%p, phy=0x%p\n", hcd, ehci, hcd->usb_phy); @@ -168,6 +289,11 @@ static int fsl_ehci_drv_probe(struct pla retval = -ENODEV; goto err2; } + + ehci_fsl->have_hcd = 1; + } else { + dev_err(&pdev->dev, "wrong operating mode\n"); + return -ENODEV; } #endif return retval; @@ -181,6 +307,17 @@ static int fsl_ehci_drv_probe(struct pla return retval; } +static bool usb_phy_clk_valid(struct usb_hcd *hcd) +{ + void __iomem *non_ehci = hcd->regs; + bool ret = true; + + if (!(ioread32be(non_ehci + FSL_SOC_USB_CTRL) & PHY_CLK_VALID)) + ret = false; + + return ret; +} + static int ehci_fsl_setup_phy(struct usb_hcd *hcd, enum fsl_usb2_phy_modes phy_mode, unsigned int port_offset) @@ -219,6 +356,21 @@ static int ehci_fsl_setup_phy(struct usb /* fall through */ case FSL_USB2_PHY_UTMI: case FSL_USB2_PHY_UTMI_DUAL: + if (pdata->has_fsl_erratum_a006918) { + pr_warn("fsl-ehci: USB PHY clock invalid\n"); + return -EINVAL; + } + + /* PHY_CLK_VALID bit is de-featured from all controller + * versions below 2.4 and is to be checked only for + * internal UTMI phy + */ + if (pdata->controller_ver > FSL_USB_VER_2_4 && + pdata->have_sysif_regs && !usb_phy_clk_valid(hcd)) { + pr_err("fsl-ehci: USB PHY clock invalid\n"); + return -EINVAL; + } + if (pdata->have_sysif_regs && pdata->controller_ver) { /* controller version 1.6 or above */ clrsetbits_be32(non_ehci + FSL_SOC_USB_CTRL, @@ -295,14 +447,9 @@ static int ehci_fsl_usb_setup(struct ehc return -EINVAL; if (pdata->operating_mode == FSL_USB2_MPH_HOST) { - unsigned int chip, rev, svr; - - svr = mfspr(SPRN_SVR); - chip = svr >> 16; - rev = (svr >> 4) & 0xf; /* Deal with USB Erratum #14 on MPC834x Rev 1.0 & 1.1 chips */ - if ((rev == 1) && (chip >= 0x8050) && (chip <= 0x8055)) + if (pdata->has_fsl_erratum_14 == 1) ehci->has_fsl_port_bug = 1; if (pdata->port_enables & FSL_USB2_PORT0_ENABLED) @@ -382,16 +529,56 @@ static int ehci_fsl_setup(struct usb_hcd return retval; } -struct ehci_fsl { - struct ehci_hcd ehci; - #ifdef CONFIG_PM - /* Saved USB PHY settings, need to restore after deep sleep. */ - u32 usb_ctrl; -#endif -}; +void __iomem *phy_reg; -#ifdef CONFIG_PM +#ifdef CONFIG_PPC +/* save usb registers */ +static int ehci_fsl_save_context(struct usb_hcd *hcd) +{ + struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd); + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + void __iomem *non_ehci = hcd->regs; + struct device *dev = hcd->self.controller; + struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev); + + if (pdata->phy_mode == FSL_USB2_PHY_UTMI_DUAL) { + phy_reg = ioremap(FSL_USB_PHY_ADDR, + sizeof(struct ccsr_usb_phy)); + _memcpy_fromio((void *)&ehci_fsl->saved_phy_regs, phy_reg, + sizeof(struct ccsr_usb_phy)); + } + + _memcpy_fromio((void *)&ehci_fsl->saved_regs, ehci->regs, + sizeof(struct ehci_regs)); + ehci_fsl->usb_ctrl = ioread32be(non_ehci + FSL_SOC_USB_CTRL); + + return 0; +} + +/*Restore usb registers */ +static int ehci_fsl_restore_context(struct usb_hcd *hcd) +{ + struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd); + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + void __iomem *non_ehci = hcd->regs; + struct device *dev = hcd->self.controller; + struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev); + + if (pdata->phy_mode == FSL_USB2_PHY_UTMI_DUAL) { + if (phy_reg) + _memcpy_toio(phy_reg, + (void *)&ehci_fsl->saved_phy_regs, + sizeof(struct ccsr_usb_phy)); + } + + _memcpy_toio(ehci->regs, (void *)&ehci_fsl->saved_regs, + sizeof(struct ehci_regs)); + iowrite32be(ehci_fsl->usb_ctrl, non_ehci + FSL_SOC_USB_CTRL); + + return 0; +} +#endif #ifdef CONFIG_PPC_MPC512x static int ehci_fsl_mpc512x_drv_suspend(struct device *dev) @@ -538,26 +725,45 @@ static inline int ehci_fsl_mpc512x_drv_r } #endif /* CONFIG_PPC_MPC512x */ -static struct ehci_fsl *hcd_to_ehci_fsl(struct usb_hcd *hcd) -{ - struct ehci_hcd *ehci = hcd_to_ehci(hcd); - - return container_of(ehci, struct ehci_fsl, ehci); -} - static int ehci_fsl_drv_suspend(struct device *dev) { struct usb_hcd *hcd = dev_get_drvdata(dev); struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd); void __iomem *non_ehci = hcd->regs; +#if defined(CONFIG_FSL_USB2_OTG) || defined(CONFIG_FSL_USB2_OTG_MODULE) + struct usb_bus host = hcd->self; +#endif + +#ifdef CONFIG_PPC + suspend_state_t pm_state; + /* FIXME:Need to port fsl_pm.h before enable below code. */ + /*pm_state = pm_suspend_state();*/ + pm_state = PM_SUSPEND_MEM; + +if (pm_state == PM_SUSPEND_MEM) + ehci_fsl_save_context(hcd); +#endif if (of_device_is_compatible(dev->parent->of_node, "fsl,mpc5121-usb2-dr")) { return ehci_fsl_mpc512x_drv_suspend(dev); } +#if defined(CONFIG_FSL_USB2_OTG) || defined(CONFIG_FSL_USB2_OTG_MODULE) + if (host.is_otg) { + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + + /* remove hcd */ + ehci_fsl->hcd_add = 0; + schedule_work(&ehci->change_hcd_work); + host.is_otg = 0; + return 0; + } +#endif + ehci_prepare_ports_for_controller_suspend(hcd_to_ehci(hcd), device_may_wakeup(dev)); + if (!fsl_deep_sleep()) return 0; @@ -571,12 +777,36 @@ static int ehci_fsl_drv_resume(struct de struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd); struct ehci_hcd *ehci = hcd_to_ehci(hcd); void __iomem *non_ehci = hcd->regs; +#if defined(CONFIG_FSL_USB2_OTG) || defined(CONFIG_FSL_USB2_OTG_MODULE) + struct usb_bus host = hcd->self; +#endif + +#ifdef CONFIG_PPC + suspend_state_t pm_state; + /* FIXME:Need to port fsl_pm.h before enable below code.*/ + /* pm_state = pm_suspend_state(); */ + pm_state = PM_SUSPEND_MEM; + + if (pm_state == PM_SUSPEND_MEM) + ehci_fsl_restore_context(hcd); +#endif if (of_device_is_compatible(dev->parent->of_node, "fsl,mpc5121-usb2-dr")) { return ehci_fsl_mpc512x_drv_resume(dev); } +#if defined(CONFIG_FSL_USB2_OTG) || defined(CONFIG_FSL_USB2_OTG_MODULE) + if (host.is_otg) { + /* add hcd */ + ehci_fsl->hcd_add = 1; + schedule_work(&ehci->change_hcd_work); + usb_hcd_resume_root_hub(hcd); + host.is_otg = 0; + return 0; + } +#endif + ehci_prepare_ports_for_controller_resume(ehci); if (!fsl_deep_sleep()) return 0; --- a/drivers/usb/host/ehci-fsl.h +++ b/drivers/usb/host/ehci-fsl.h @@ -63,4 +63,7 @@ #define UTMI_PHY_EN (1<<9) #define ULPI_PHY_CLK_SEL (1<<10) #define PHY_CLK_VALID (1<<17) + +/* Retry count for checking UTMI PHY CLK validity */ +#define UTMI_PHY_CLK_VALID_CHK_RETRY 5 #endif /* _EHCI_FSL_H */ --- a/drivers/usb/host/ehci-hub.c +++ b/drivers/usb/host/ehci-hub.c @@ -305,6 +305,8 @@ static int ehci_bus_suspend (struct usb_ USB_PORT_STAT_HIGH_SPEED) fs_idle_delay = true; ehci_writel(ehci, t2, reg); + if (ehci_has_fsl_susp_errata(ehci)) + usleep_range(10000, 20000); changed = 1; } } --- a/drivers/usb/host/ehci.h +++ b/drivers/usb/host/ehci.h @@ -180,6 +180,9 @@ struct ehci_hcd { /* one per controlle unsigned periodic_count; /* periodic activity count */ unsigned uframe_periodic_max; /* max periodic time per uframe */ +#if defined(CONFIG_FSL_USB2_OTG) || defined(CONFIG_FSL_USB2_OTG_MODULE) + struct work_struct change_hcd_work; +#endif /* list of itds & sitds completed while now_frame was still active */ struct list_head cached_itd_list; --- a/drivers/usb/host/fsl-mph-dr-of.c +++ b/drivers/usb/host/fsl-mph-dr-of.c @@ -229,6 +229,17 @@ static int fsl_usb2_mph_dr_of_probe(stru pdata->has_fsl_erratum_a005697 = of_property_read_bool(np, "fsl,usb_erratum-a005697"); + if (of_get_property(np, "fsl,erratum_a006918", NULL)) + pdata->has_fsl_erratum_a006918 = 1; + else + pdata->has_fsl_erratum_a006918 = 0; + + if (of_get_property(np, "fsl,usb_erratum_14", NULL)) + pdata->has_fsl_erratum_14 = 1; + else + pdata->has_fsl_erratum_14 = 0; + + /* * Determine whether phy_clk_valid needs to be checked * by reading property in device tree --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -689,12 +689,34 @@ void xhci_set_link_state(struct xhci_hcd int port_id, u32 link_state) { u32 temp; + u32 portpmsc_u2_backup = 0; + + /* Backup U2 timeout info before initiating U3 entry erratum A-010131 */ + if (xhci->shared_hcd->speed >= HCD_USB3 && + link_state == USB_SS_PORT_LS_U3 && + (xhci->quirks & XHCI_DIS_U1U2_WHEN_U3)) { + portpmsc_u2_backup = readl(port_array[port_id] + PORTPMSC); + portpmsc_u2_backup &= PORT_U2_TIMEOUT_MASK; + temp = readl(port_array[port_id] + PORTPMSC); + temp |= PORT_U2_TIMEOUT_MASK; + writel(temp, port_array[port_id] + PORTPMSC); + } temp = readl(port_array[port_id]); temp = xhci_port_state_to_neutral(temp); temp &= ~PORT_PLS_MASK; temp |= PORT_LINK_STROBE | link_state; writel(temp, port_array[port_id]); + + /* Restore U2 timeout info after U3 entry complete */ + if (xhci->shared_hcd->speed >= HCD_USB3 && + link_state == USB_SS_PORT_LS_U3 && + (xhci->quirks & XHCI_DIS_U1U2_WHEN_U3)) { + temp = readl(port_array[port_id] + PORTPMSC); + temp &= ~PORT_U2_TIMEOUT_MASK; + temp |= portpmsc_u2_backup; + writel(temp, port_array[port_id] + PORTPMSC); + } } static void xhci_set_remote_wake_mask(struct xhci_hcd *xhci, --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -263,8 +263,22 @@ static int xhci_plat_probe(struct platfo goto disable_clk; } - if (device_property_read_bool(sysdev, "usb3-lpm-capable")) + if (device_property_read_bool(sysdev, "usb3-lpm-capable")) { xhci->quirks |= XHCI_LPM_SUPPORT; + if (device_property_read_bool(sysdev, + "snps,dis-u1u2-when-u3-quirk")) + xhci->quirks |= XHCI_DIS_U1U2_WHEN_U3; + } + + if (device_property_read_bool(&pdev->dev, "quirk-reverse-in-out")) + xhci->quirks |= XHCI_REVERSE_IN_OUT; + + if (device_property_read_bool(&pdev->dev, + "quirk-stop-transfer-in-block")) + xhci->quirks |= XHCI_STOP_TRANSFER_IN_BLOCK; + + if (device_property_read_bool(&pdev->dev, "quirk-stop-ep-in-u1")) + xhci->quirks |= XHCI_STOP_EP_IN_U1; if (device_property_read_bool(&pdev->dev, "quirk-broken-port-ped")) xhci->quirks |= XHCI_BROKEN_PORT_PED; --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1978,10 +1978,12 @@ static int finish_td(struct xhci_hcd *xh union xhci_trb *ep_trb, struct xhci_transfer_event *event, struct xhci_virt_ep *ep, int *status) { + struct xhci_dequeue_state deq_state; struct xhci_virt_device *xdev; struct xhci_ep_ctx *ep_ctx; struct xhci_ring *ep_ring; unsigned int slot_id; + u32 remaining; u32 trb_comp_code; int ep_index; @@ -2004,14 +2006,30 @@ static int finish_td(struct xhci_hcd *xh if (trb_comp_code == COMP_STALL_ERROR || xhci_requires_manual_halt_cleanup(xhci, ep_ctx, trb_comp_code)) { - /* Issue a reset endpoint command to clear the host side - * halt, followed by a set dequeue command to move the - * dequeue pointer past the TD. - * The class driver clears the device side halt later. + /*erratum A-007463: + *After transaction error, controller switches control transfer + *data stage from IN to OUT direction. */ - xhci_cleanup_halted_endpoint(xhci, slot_id, ep_index, + remaining = EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)); + if (remaining && xhci_requires_manual_halt_cleanup(xhci, ep_ctx, + trb_comp_code) && + (xhci->quirks & XHCI_REVERSE_IN_OUT)) { + memset(&deq_state, 0, sizeof(deq_state)); + xhci_find_new_dequeue_state(xhci, slot_id, + ep_index, td->urb->stream_id, td, &deq_state); + xhci_queue_new_dequeue_state(xhci, slot_id, ep_index, + &deq_state); + xhci_ring_cmd_db(xhci); + } else { + /* Issue a reset endpoint command to clear the host side + * halt, followed by a set dequeue command to move the + * dequeue pointer past the TD. + * The class driver clears the device side halt later. + */ + xhci_cleanup_halted_endpoint(xhci, slot_id, ep_index, ep_ring->stream_id, td, ep_trb, EP_HARD_RESET); + } } else { /* Update ring dequeue pointer */ while (ep_ring->dequeue != td->last_trb) --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -1604,13 +1604,38 @@ static int xhci_urb_dequeue(struct usb_h ret = -ENOMEM; goto done; } - ep->ep_state |= EP_STOP_CMD_PENDING; - ep->stop_cmd_timer.expires = jiffies + + /* + *erratum A-009611: Issuing an End Transfer command on an IN + *endpoint. when a transfer is in progress on USB blocks the + *transmission. + *Workaround: Software must wait for all existing TRBs to + *complete before issuing End transfer command. + */ + if ((ep_ring->enqueue == ep_ring->dequeue && + (xhci->quirks & XHCI_STOP_TRANSFER_IN_BLOCK)) || + !(xhci->quirks & XHCI_STOP_TRANSFER_IN_BLOCK)) { + ep->ep_state |= EP_STOP_CMD_PENDING; + ep->stop_cmd_timer.expires = jiffies + XHCI_STOP_EP_CMD_TIMEOUT * HZ; - add_timer(&ep->stop_cmd_timer); - xhci_queue_stop_endpoint(xhci, command, urb->dev->slot_id, - ep_index, 0); - xhci_ring_cmd_db(xhci); + add_timer(&ep->stop_cmd_timer); + xhci_queue_stop_endpoint(xhci, command, + urb->dev->slot_id, + ep_index, 0); + xhci_ring_cmd_db(xhci); + } + + /* + *erratum A-009668: Stop Endpoint Command does not complete. + *Workaround: Instead of issuing a Stop Endpoint Command, + *issue a Disable Slot Command with the corresponding slot ID. + *Alternately, you can issue an Address Device Command with + *BSR=1 + */ + if ((urb->dev->speed <= USB_SPEED_HIGH) && + (xhci->quirks & XHCI_STOP_EP_IN_U1)) { + xhci_queue_slot_control(xhci, command, TRB_DISABLE_SLOT, + urb->dev->slot_id); + } } done: spin_unlock_irqrestore(&xhci->lock, flags); --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1794,7 +1794,7 @@ struct xhci_hcd { #define XHCI_STATE_DYING (1 << 0) #define XHCI_STATE_HALTED (1 << 1) #define XHCI_STATE_REMOVING (1 << 2) - unsigned long long quirks; + unsigned long long quirks; #define XHCI_LINK_TRB_QUIRK BIT_ULL(0) #define XHCI_RESET_EP_QUIRK BIT_ULL(1) #define XHCI_NEC_HOST BIT_ULL(2) @@ -1830,6 +1830,9 @@ struct xhci_hcd { #define XHCI_SSIC_PORT_UNUSED BIT_ULL(22) #define XHCI_NO_64BIT_SUPPORT BIT_ULL(23) #define XHCI_MISSING_CAS BIT_ULL(24) +#define XHCI_REVERSE_IN_OUT BIT(32) +#define XHCI_STOP_TRANSFER_IN_BLOCK BIT(33) +#define XHCI_STOP_EP_IN_U1 BIT(34) /* For controller with a broken Port Disable implementation */ #define XHCI_BROKEN_PORT_PED BIT_ULL(25) #define XHCI_LIMIT_ENDPOINT_INTERVAL_7 BIT_ULL(26) @@ -1838,8 +1841,9 @@ struct xhci_hcd { #define XHCI_HW_LPM_DISABLE BIT_ULL(29) #define XHCI_SUSPEND_DELAY BIT_ULL(30) #define XHCI_INTEL_USB_ROLE_SW BIT_ULL(31) -#define XHCI_RESET_PLL_ON_DISCONNECT BIT_ULL(34) -#define XHCI_SNPS_BROKEN_SUSPEND BIT_ULL(35) +#define XHCI_RESET_PLL_ON_DISCONNECT BIT_ULL(35) +#define XHCI_SNPS_BROKEN_SUSPEND BIT_ULL(36) +#define XHCI_DIS_U1U2_WHEN_U3 BIT(37) unsigned int num_active_eps; unsigned int limit_active_eps; --- a/drivers/usb/phy/phy-fsl-usb.c +++ b/drivers/usb/phy/phy-fsl-usb.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2007,2008 Freescale semiconductor, Inc. + * Copyright 2007,2008 Freescale Semiconductor, Inc. * * Author: Li Yang * Jerry Huang @@ -470,6 +470,7 @@ void otg_reset_controller(void) int fsl_otg_start_host(struct otg_fsm *fsm, int on) { struct usb_otg *otg = fsm->otg; + struct usb_bus *host = otg->host; struct device *dev; struct fsl_otg *otg_dev = container_of(otg->usb_phy, struct fsl_otg, phy); @@ -493,6 +494,7 @@ int fsl_otg_start_host(struct otg_fsm *f otg_reset_controller(); VDBG("host on......\n"); if (dev->driver->pm && dev->driver->pm->resume) { + host->is_otg = 1; retval = dev->driver->pm->resume(dev); if (fsm->id) { /* default-b */ @@ -517,8 +519,11 @@ int fsl_otg_start_host(struct otg_fsm *f else { VDBG("host off......\n"); if (dev && dev->driver) { - if (dev->driver->pm && dev->driver->pm->suspend) + if (dev->driver->pm && + dev->driver->pm->suspend) { + host->is_otg = 1; retval = dev->driver->pm->suspend(dev); + } if (fsm->id) /* default-b */ fsl_otg_drv_vbus(fsm, 0); @@ -546,8 +551,17 @@ int fsl_otg_start_gadget(struct otg_fsm dev = otg->gadget->dev.parent; if (on) { - if (dev->driver->resume) + /* Delay gadget resume to synchronize between host and gadget + * drivers. Upon role-reversal host drv is shutdown by kernel + * worker thread. By the time host drv shuts down, controller + * gets programmed for gadget role. Shutting host drv after + * this results in controller getting reset, and it stops + * responding to otg events + */ + if (dev->driver->resume) { + msleep(1000); dev->driver->resume(dev); + } } else { if (dev->driver->suspend) dev->driver->suspend(dev, otg_suspend_state); @@ -668,6 +682,10 @@ static void fsl_otg_event(struct work_st fsl_otg_start_host(fsm, 0); otg_drv_vbus(fsm, 0); fsl_otg_start_gadget(fsm, 1); + } else { + fsl_otg_start_gadget(fsm, 0); + otg_drv_vbus(fsm, 1); + fsl_otg_start_host(fsm, 1); } } @@ -720,6 +738,7 @@ irqreturn_t fsl_otg_isr(int irq, void *d { struct otg_fsm *fsm = &((struct fsl_otg *)dev_id)->fsm; struct usb_otg *otg = ((struct fsl_otg *)dev_id)->phy.otg; + struct fsl_otg *otg_dev = dev_id; u32 otg_int_src, otg_sc; otg_sc = fsl_readl(&usb_dr_regs->otgsc); @@ -749,18 +768,8 @@ irqreturn_t fsl_otg_isr(int irq, void *d otg->gadget->is_a_peripheral = !fsm->id; VDBG("ID int (ID is %d)\n", fsm->id); - if (fsm->id) { /* switch to gadget */ - schedule_delayed_work( - &((struct fsl_otg *)dev_id)->otg_event, - 100); - } else { /* switch to host */ - cancel_delayed_work(& - ((struct fsl_otg *)dev_id)-> - otg_event); - fsl_otg_start_gadget(fsm, 0); - otg_drv_vbus(fsm, 1); - fsl_otg_start_host(fsm, 1); - } + schedule_delayed_work(&otg_dev->otg_event, 100); + return IRQ_HANDLED; } } @@ -920,12 +929,32 @@ int usb_otg_start(struct platform_device temp &= ~(PORTSC_PHY_TYPE_SEL | PORTSC_PTW); switch (pdata->phy_mode) { case FSL_USB2_PHY_ULPI: + if (pdata->controller_ver) { + /* controller version 1.6 or above */ + setbits32(&p_otg->dr_mem_map->control, + USB_CTRL_ULPI_PHY_CLK_SEL); + /* + * Due to controller issue of PHY_CLK_VALID in ULPI + * mode, we set USB_CTRL_USB_EN before checking + * PHY_CLK_VALID, otherwise PHY_CLK_VALID doesn't work. + */ + clrsetbits_be32(&p_otg->dr_mem_map->control, + USB_CTRL_UTMI_PHY_EN, USB_CTRL_IOENB); + } temp |= PORTSC_PTS_ULPI; break; case FSL_USB2_PHY_UTMI_WIDE: temp |= PORTSC_PTW_16BIT; /* fall through */ case FSL_USB2_PHY_UTMI: + if (pdata->controller_ver) { + /* controller version 1.6 or above */ + setbits32(&p_otg->dr_mem_map->control, + USB_CTRL_UTMI_PHY_EN); + /* Delay for UTMI PHY CLK to become stable - 10ms */ + mdelay(FSL_UTMI_PHY_DLY); + } + setbits32(&p_otg->dr_mem_map->control, USB_CTRL_UTMI_PHY_EN); temp |= PORTSC_PTS_UTMI; /* fall through */ default: --- a/drivers/usb/phy/phy-fsl-usb.h +++ b/drivers/usb/phy/phy-fsl-usb.h @@ -199,6 +199,14 @@ /* control Register Bit Masks */ #define USB_CTRL_IOENB (0x1<<2) #define USB_CTRL_ULPI_INT0EN (0x1<<0) +#define USB_CTRL_WU_INT_EN (0x1<<1) +#define USB_CTRL_LINE_STATE_FILTER__EN (0x1<<3) +#define USB_CTRL_KEEP_OTG_ON (0x1<<4) +#define USB_CTRL_OTG_PORT (0x1<<5) +#define USB_CTRL_PLL_RESET (0x1<<8) +#define USB_CTRL_UTMI_PHY_EN (0x1<<9) +#define USB_CTRL_ULPI_PHY_CLK_SEL (0x1<<10) +#define USB_CTRL_PHY_CLK_VALID (0x1<<17) /* BCSR5 */ #define BCSR5_INT_USB (0x02) --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -432,6 +432,7 @@ struct usb_bus { * for control transfers? */ u8 otg_port; /* 0, or number of OTG/HNP port */ + unsigned is_otg:1; /* true when host is also otg */ unsigned is_b_host:1; /* true during some HNP roleswitches */ unsigned b_hnp_enable:1; /* OTG: did A-Host enable HNP? */ unsigned no_stop_on_short:1; /* --- a/include/linux/usb/of.h +++ b/include/linux/usb/of.h @@ -11,6 +11,8 @@ #include #include +enum usb_dr_mode of_usb_get_dr_mode(struct device_node *np); + #if IS_ENABLED(CONFIG_OF) enum usb_dr_mode of_usb_get_dr_mode_by_phy(struct device_node *np, int arg0); bool of_usb_host_tpl_support(struct device_node *np);