diff options
Diffstat (limited to 'drivers/usb/host/ehci-fsl.c')
| -rw-r--r-- | drivers/usb/host/ehci-fsl.c | 392 |
1 files changed, 323 insertions, 69 deletions
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index 5c761df7fa8..cf2734b532a 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -1,6 +1,6 @@ /* * Copyright 2005-2009 MontaVista Software, Inc. - * Copyright 2008 Freescale Semiconductor, Inc. + * Copyright 2008,2012 Freescale Semiconductor, Inc. * * 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 @@ -27,6 +27,7 @@ #include <linux/types.h> #include <linux/delay.h> #include <linux/pm.h> +#include <linux/err.h> #include <linux/platform_device.h> #include <linux/fsl_devices.h> @@ -56,7 +57,7 @@ static int usb_hcd_fsl_probe(const struct hc_driver *driver, pr_debug("initializing FSL-SOC USB Controller\n"); /* Need platform data for setup */ - pdata = (struct fsl_usb2_platform_data *)pdev->dev.platform_data; + pdata = dev_get_platdata(&pdev->dev); if (!pdata) { dev_err(&pdev->dev, "No platform data for %s.\n", dev_name(&pdev->dev)); @@ -100,46 +101,61 @@ static int usb_hcd_fsl_probe(const struct hc_driver *driver, goto err2; } hcd->rsrc_start = res->start; - hcd->rsrc_len = res->end - res->start + 1; - if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, - driver->description)) { - dev_dbg(&pdev->dev, "controller already in use\n"); - retval = -EBUSY; + hcd->rsrc_len = resource_size(res); + hcd->regs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(hcd->regs)) { + retval = PTR_ERR(hcd->regs); goto err2; } - hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); - - if (hcd->regs == NULL) { - dev_dbg(&pdev->dev, "error mapping memory\n"); - retval = -EFAULT; - goto err3; - } pdata->regs = hcd->regs; + if (pdata->power_budget) + hcd->power_budget = pdata->power_budget; + /* * do platform specific init: check the clock, grab/config pins, etc. */ if (pdata->init && pdata->init(pdev)) { retval = -ENODEV; - goto err3; + goto err2; } /* Enable USB controller, 83xx or 8536 */ - if (pdata->have_sysif_regs) + if (pdata->have_sysif_regs && pdata->controller_ver < FSL_USB_VER_1_6) setbits32(hcd->regs + FSL_SOC_USB_CTRL, 0x4); /* Don't need to set host mode here. It will be done by tdi_reset() */ - retval = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED); + retval = usb_add_hcd(hcd, irq, IRQF_SHARED); if (retval != 0) - goto err4; + goto err2; + device_wakeup_enable(hcd->self.controller); + +#ifdef CONFIG_USB_OTG + if (pdata->operating_mode == FSL_USB2_DR_OTG) { + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + + hcd->phy = usb_get_phy(USB_PHY_TYPE_USB2); + dev_dbg(&pdev->dev, "hcd=0x%p ehci=0x%p, phy=0x%p\n", + hcd, ehci, hcd->phy); + + if (!IS_ERR_OR_NULL(hcd->phy)) { + retval = otg_set_host(hcd->phy->otg, + &ehci_to_hcd(ehci)->self); + if (retval) { + usb_put_phy(hcd->phy); + goto err2; + } + } else { + dev_err(&pdev->dev, "can't find phy\n"); + retval = -ENODEV; + goto err2; + } + } +#endif return retval; - err4: - iounmap(hcd->regs); - err3: - release_mem_region(hcd->rsrc_start, hcd->rsrc_len); err2: usb_put_hcd(hcd); err1: @@ -163,7 +179,12 @@ static int usb_hcd_fsl_probe(const struct hc_driver *driver, static void usb_hcd_fsl_remove(struct usb_hcd *hcd, struct platform_device *pdev) { - struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; + struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev); + + if (!IS_ERR_OR_NULL(hcd->phy)) { + otg_set_host(hcd->phy->otg, NULL); + usb_put_phy(hcd->phy); + } usb_remove_hcd(hcd); @@ -173,22 +194,35 @@ static void usb_hcd_fsl_remove(struct usb_hcd *hcd, */ if (pdata->exit) pdata->exit(pdev); - iounmap(hcd->regs); - release_mem_region(hcd->rsrc_start, hcd->rsrc_len); usb_put_hcd(hcd); } -static void ehci_fsl_setup_phy(struct ehci_hcd *ehci, +static int ehci_fsl_setup_phy(struct usb_hcd *hcd, enum fsl_usb2_phy_modes phy_mode, unsigned int port_offset) { u32 portsc; + 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->controller_ver < 0) { + dev_warn(hcd->self.controller, "Could not get controller version\n"); + return -ENODEV; + } portsc = ehci_readl(ehci, &ehci->regs->port_status[port_offset]); portsc &= ~(PORT_PTS_MSK | PORT_PTS_PTW); switch (phy_mode) { case FSL_USB2_PHY_ULPI: + if (pdata->have_sysif_regs && pdata->controller_ver) { + /* controller version 1.6 or above */ + clrbits32(non_ehci + FSL_SOC_USB_CTRL, UTMI_PHY_EN); + setbits32(non_ehci + FSL_SOC_USB_CTRL, + ULPI_PHY_CLK_SEL | USB_CTRL_USB_EN); + } portsc |= PORT_PTS_ULPI; break; case FSL_USB2_PHY_SERIAL: @@ -198,46 +232,67 @@ static void ehci_fsl_setup_phy(struct ehci_hcd *ehci, portsc |= PORT_PTS_PTW; /* fall through */ case FSL_USB2_PHY_UTMI: + if (pdata->have_sysif_regs && pdata->controller_ver) { + /* controller version 1.6 or above */ + setbits32(non_ehci + FSL_SOC_USB_CTRL, UTMI_PHY_EN); + mdelay(FSL_UTMI_PHY_DLY); /* Delay for UTMI PHY CLK to + become stable - 10ms*/ + } + /* enable UTMI PHY */ + if (pdata->have_sysif_regs) + setbits32(non_ehci + FSL_SOC_USB_CTRL, + CTRL_UTMI_PHY_EN); portsc |= PORT_PTS_UTMI; break; case FSL_USB2_PHY_NONE: break; } + + if (pdata->have_sysif_regs && + pdata->controller_ver > FSL_USB_VER_1_6 && + (phy_mode == FSL_USB2_PHY_ULPI)) { + /* check PHY_CLK_VALID to get phy clk valid */ + if (!(spin_event_timeout(in_be32(non_ehci + FSL_SOC_USB_CTRL) & + PHY_CLK_VALID, FSL_USB_PHY_CLK_TIMEOUT, 0) || + in_be32(non_ehci + FSL_SOC_USB_PRICTRL))) { + dev_warn(hcd->self.controller, "USB PHY clock invalid\n"); + return -EINVAL; + } + } + ehci_writel(ehci, portsc, &ehci->regs->port_status[port_offset]); + + if (phy_mode != FSL_USB2_PHY_ULPI && pdata->have_sysif_regs) + setbits32(non_ehci + FSL_SOC_USB_CTRL, USB_CTRL_USB_EN); + + return 0; } -static void ehci_fsl_usb_setup(struct ehci_hcd *ehci) +static int ehci_fsl_usb_setup(struct ehci_hcd *ehci) { struct usb_hcd *hcd = ehci_to_hcd(ehci); struct fsl_usb2_platform_data *pdata; void __iomem *non_ehci = hcd->regs; - u32 temp; - pdata = hcd->self.controller->platform_data; + pdata = dev_get_platdata(hcd->self.controller); - /* Enable PHY interface in the control reg. */ if (pdata->have_sysif_regs) { - temp = in_be32(non_ehci + FSL_SOC_USB_CTRL); - out_be32(non_ehci + FSL_SOC_USB_CTRL, temp | 0x00000004); - out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0000001b); + /* + * Turn on cache snooping hardware, since some PowerPC platforms + * wholly rely on hardware to deal with cache coherent + */ + + /* Setup Snooping for all the 4GB space */ + /* SNOOP1 starts from 0x0, size 2G */ + out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0 | SNOOP_SIZE_2GB); + /* SNOOP2 starts from 0x80000000, size 2G */ + out_be32(non_ehci + FSL_SOC_USB_SNOOP2, 0x80000000 | SNOOP_SIZE_2GB); } -#if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE) - /* - * Turn on cache snooping hardware, since some PowerPC platforms - * wholly rely on hardware to deal with cache coherent - */ - - /* Setup Snooping for all the 4GB space */ - /* SNOOP1 starts from 0x0, size 2G */ - out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0 | SNOOP_SIZE_2GB); - /* SNOOP2 starts from 0x80000000, size 2G */ - out_be32(non_ehci + FSL_SOC_USB_SNOOP2, 0x80000000 | SNOOP_SIZE_2GB); -#endif - if ((pdata->operating_mode == FSL_USB2_DR_HOST) || (pdata->operating_mode == FSL_USB2_DR_OTG)) - ehci_fsl_setup_phy(ehci, pdata->phy_mode, 0); + if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0)) + return -EINVAL; if (pdata->operating_mode == FSL_USB2_MPH_HOST) { unsigned int chip, rev, svr; @@ -251,13 +306,16 @@ static void ehci_fsl_usb_setup(struct ehci_hcd *ehci) ehci->has_fsl_port_bug = 1; if (pdata->port_enables & FSL_USB2_PORT0_ENABLED) - ehci_fsl_setup_phy(ehci, pdata->phy_mode, 0); + if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0)) + return -EINVAL; + if (pdata->port_enables & FSL_USB2_PORT1_ENABLED) - ehci_fsl_setup_phy(ehci, pdata->phy_mode, 1); + if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 1)) + return -EINVAL; } if (pdata->have_sysif_regs) { -#ifdef CONFIG_PPC_85xx +#ifdef CONFIG_FSL_SOC_BOOKE out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x00000008); out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000080); #else @@ -266,13 +324,15 @@ static void ehci_fsl_usb_setup(struct ehci_hcd *ehci) #endif out_be32(non_ehci + FSL_SOC_USB_SICTRL, 0x00000001); } + + return 0; } /* called after powerup, by probe or system-pm "wakeup" */ static int ehci_fsl_reinit(struct ehci_hcd *ehci) { - ehci_fsl_usb_setup(ehci); - ehci_port_power(ehci, 0); + if (ehci_fsl_usb_setup(ehci)) + return -EINVAL; return 0; } @@ -283,35 +343,40 @@ static int ehci_fsl_setup(struct usb_hcd *hcd) struct ehci_hcd *ehci = hcd_to_ehci(hcd); int retval; struct fsl_usb2_platform_data *pdata; + struct device *dev; - pdata = hcd->self.controller->platform_data; + dev = hcd->self.controller; + pdata = dev_get_platdata(hcd->self.controller); ehci->big_endian_desc = pdata->big_endian_desc; ehci->big_endian_mmio = pdata->big_endian_mmio; /* EHCI registers start at offset 0x100 */ ehci->caps = hcd->regs + 0x100; - ehci->regs = hcd->regs + 0x100 + - HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase)); - dbg_hcs_params(ehci, "reset"); - dbg_hcc_params(ehci, "reset"); - /* cache this readonly data; minimize chip reads */ - ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); +#ifdef CONFIG_PPC_83xx + /* + * Deal with MPC834X that need port power to be cycled after the power + * fault condition is removed. Otherwise the state machine does not + * reflect PORTSC[CSC] correctly. + */ + ehci->need_oc_pp_cycle = 1; +#endif hcd->has_tt = 1; - retval = ehci_halt(ehci); + retval = ehci_setup(hcd); if (retval) return retval; - /* data structure init */ - retval = ehci_init(hcd); - if (retval) - return retval; - - ehci->sbrn = 0x20; - - ehci_reset(ehci); + if (of_device_is_compatible(dev->parent->of_node, + "fsl,mpc5121-usb2-dr")) { + /* + * set SBUSCFG:AHBBRST so that control msgs don't + * fail when doing heavy PATA writes. + */ + ehci_writel(ehci, SBUSCFG_INCR8, + hcd->regs + FSL_SOC_USB_SBUSCFG); + } retval = ehci_fsl_reinit(ehci); return retval; @@ -328,6 +393,151 @@ struct ehci_fsl { #ifdef CONFIG_PM +#ifdef CONFIG_PPC_MPC512x +static int ehci_fsl_mpc512x_drv_suspend(struct device *dev) +{ + struct usb_hcd *hcd = dev_get_drvdata(dev); + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev); + u32 tmp; + +#ifdef CONFIG_DYNAMIC_DEBUG + u32 mode = ehci_readl(ehci, hcd->regs + FSL_SOC_USB_USBMODE); + mode &= USBMODE_CM_MASK; + tmp = ehci_readl(ehci, hcd->regs + 0x140); /* usbcmd */ + + dev_dbg(dev, "suspend=%d already_suspended=%d " + "mode=%d usbcmd %08x\n", pdata->suspended, + pdata->already_suspended, mode, tmp); +#endif + + /* + * If the controller is already suspended, then this must be a + * PM suspend. Remember this fact, so that we will leave the + * controller suspended at PM resume time. + */ + if (pdata->suspended) { + dev_dbg(dev, "already suspended, leaving early\n"); + pdata->already_suspended = 1; + return 0; + } + + dev_dbg(dev, "suspending...\n"); + + ehci->rh_state = EHCI_RH_SUSPENDED; + dev->power.power_state = PMSG_SUSPEND; + + /* ignore non-host interrupts */ + clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + + /* stop the controller */ + tmp = ehci_readl(ehci, &ehci->regs->command); + tmp &= ~CMD_RUN; + ehci_writel(ehci, tmp, &ehci->regs->command); + + /* save EHCI registers */ + pdata->pm_command = ehci_readl(ehci, &ehci->regs->command); + pdata->pm_command &= ~CMD_RUN; + pdata->pm_status = ehci_readl(ehci, &ehci->regs->status); + pdata->pm_intr_enable = ehci_readl(ehci, &ehci->regs->intr_enable); + pdata->pm_frame_index = ehci_readl(ehci, &ehci->regs->frame_index); + pdata->pm_segment = ehci_readl(ehci, &ehci->regs->segment); + pdata->pm_frame_list = ehci_readl(ehci, &ehci->regs->frame_list); + pdata->pm_async_next = ehci_readl(ehci, &ehci->regs->async_next); + pdata->pm_configured_flag = + ehci_readl(ehci, &ehci->regs->configured_flag); + pdata->pm_portsc = ehci_readl(ehci, &ehci->regs->port_status[0]); + pdata->pm_usbgenctrl = ehci_readl(ehci, + hcd->regs + FSL_SOC_USB_USBGENCTRL); + + /* clear the W1C bits */ + pdata->pm_portsc &= cpu_to_hc32(ehci, ~PORT_RWC_BITS); + + pdata->suspended = 1; + + /* clear PP to cut power to the port */ + tmp = ehci_readl(ehci, &ehci->regs->port_status[0]); + tmp &= ~PORT_POWER; + ehci_writel(ehci, tmp, &ehci->regs->port_status[0]); + + return 0; +} + +static int ehci_fsl_mpc512x_drv_resume(struct device *dev) +{ + struct usb_hcd *hcd = dev_get_drvdata(dev); + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev); + u32 tmp; + + dev_dbg(dev, "suspend=%d already_suspended=%d\n", + pdata->suspended, pdata->already_suspended); + + /* + * If the controller was already suspended at suspend time, + * then don't resume it now. + */ + if (pdata->already_suspended) { + dev_dbg(dev, "already suspended, leaving early\n"); + pdata->already_suspended = 0; + return 0; + } + + if (!pdata->suspended) { + dev_dbg(dev, "not suspended, leaving early\n"); + return 0; + } + + pdata->suspended = 0; + + dev_dbg(dev, "resuming...\n"); + + /* set host mode */ + tmp = USBMODE_CM_HOST | (pdata->es ? USBMODE_ES : 0); + ehci_writel(ehci, tmp, hcd->regs + FSL_SOC_USB_USBMODE); + + ehci_writel(ehci, pdata->pm_usbgenctrl, + hcd->regs + FSL_SOC_USB_USBGENCTRL); + ehci_writel(ehci, ISIPHYCTRL_PXE | ISIPHYCTRL_PHYE, + hcd->regs + FSL_SOC_USB_ISIPHYCTRL); + + ehci_writel(ehci, SBUSCFG_INCR8, hcd->regs + FSL_SOC_USB_SBUSCFG); + + /* restore EHCI registers */ + ehci_writel(ehci, pdata->pm_command, &ehci->regs->command); + ehci_writel(ehci, pdata->pm_intr_enable, &ehci->regs->intr_enable); + ehci_writel(ehci, pdata->pm_frame_index, &ehci->regs->frame_index); + ehci_writel(ehci, pdata->pm_segment, &ehci->regs->segment); + ehci_writel(ehci, pdata->pm_frame_list, &ehci->regs->frame_list); + ehci_writel(ehci, pdata->pm_async_next, &ehci->regs->async_next); + ehci_writel(ehci, pdata->pm_configured_flag, + &ehci->regs->configured_flag); + ehci_writel(ehci, pdata->pm_portsc, &ehci->regs->port_status[0]); + + set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + ehci->rh_state = EHCI_RH_RUNNING; + dev->power.power_state = PMSG_ON; + + tmp = ehci_readl(ehci, &ehci->regs->command); + tmp |= CMD_RUN; + ehci_writel(ehci, tmp, &ehci->regs->command); + + usb_hcd_resume_root_hub(hcd); + + return 0; +} +#else +static inline int ehci_fsl_mpc512x_drv_suspend(struct device *dev) +{ + return 0; +} + +static inline int ehci_fsl_mpc512x_drv_resume(struct device *dev) +{ + return 0; +} +#endif /* CONFIG_PPC_MPC512x */ + static struct ehci_fsl *hcd_to_ehci_fsl(struct usb_hcd *hcd) { struct ehci_hcd *ehci = hcd_to_ehci(hcd); @@ -341,6 +551,11 @@ static int ehci_fsl_drv_suspend(struct device *dev) struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd); void __iomem *non_ehci = hcd->regs; + if (of_device_is_compatible(dev->parent->of_node, + "fsl,mpc5121-usb2-dr")) { + return ehci_fsl_mpc512x_drv_suspend(dev); + } + ehci_prepare_ports_for_controller_suspend(hcd_to_ehci(hcd), device_may_wakeup(dev)); if (!fsl_deep_sleep()) @@ -357,6 +572,11 @@ static int ehci_fsl_drv_resume(struct device *dev) struct ehci_hcd *ehci = hcd_to_ehci(hcd); void __iomem *non_ehci = hcd->regs; + if (of_device_is_compatible(dev->parent->of_node, + "fsl,mpc5121-usb2-dr")) { + return ehci_fsl_mpc512x_drv_resume(dev); + } + ehci_prepare_ports_for_controller_resume(ehci); if (!fsl_deep_sleep()) return 0; @@ -391,6 +611,38 @@ static struct dev_pm_ops ehci_fsl_pm_ops = { #define EHCI_FSL_PM_OPS NULL #endif /* CONFIG_PM */ +#ifdef CONFIG_USB_OTG +static int ehci_start_port_reset(struct usb_hcd *hcd, unsigned port) +{ + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + u32 status; + + if (!port) + return -EINVAL; + + port--; + + /* start port reset before HNP protocol time out */ + status = readl(&ehci->regs->port_status[port]); + if (!(status & PORT_CONNECT)) + return -ENODEV; + + /* khubd will finish the reset later */ + if (ehci_is_TDI(ehci)) { + writel(PORT_RESET | + (status & ~(PORT_CSC | PORT_PEC | PORT_OCC)), + &ehci->regs->port_status[port]); + } else { + writel(PORT_RESET, &ehci->regs->port_status[port]); + } + + return 0; +} +#else +#define ehci_start_port_reset NULL +#endif /* CONFIG_USB_OTG */ + + static const struct hc_driver ehci_fsl_hc_driver = { .description = hcd_name, .product_desc = "Freescale On-Chip EHCI Host Controller", @@ -400,7 +652,7 @@ static const struct hc_driver ehci_fsl_hc_driver = { * generic hardware linkage */ .irq = ehci_irq, - .flags = HCD_USB2 | HCD_MEMORY, + .flags = HCD_USB2 | HCD_MEMORY | HCD_BH, /* * basic lifecycle operations @@ -430,6 +682,7 @@ static const struct hc_driver ehci_fsl_hc_driver = { .hub_control = ehci_hub_control, .bus_suspend = ehci_bus_suspend, .bus_resume = ehci_bus_resume, + .start_port_reset = ehci_start_port_reset, .relinquish_port = ehci_relinquish_port, .port_handed_over = ehci_port_handed_over, @@ -462,6 +715,7 @@ static struct platform_driver ehci_fsl_driver = { .shutdown = usb_hcd_platform_shutdown, .driver = { .name = "fsl-ehci", + .owner = THIS_MODULE, .pm = EHCI_FSL_PM_OPS, }, }; |