/** * omap-usb-host.c - The USBHS core driver for OMAP EHCI & OHCI * * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com * Author: Keshava Munegowda <keshava_mgowda@ti.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 of * the License 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. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/types.h> #include <linux/slab.h> #include <linux/delay.h> #include <linux/clk.h> #include <linux/dma-mapping.h> #include <linux/spinlock.h> #include <linux/gpio.h> #include <plat/cpu.h> #include <plat/usb.h> #include <linux/pm_runtime.h> #define USBHS_DRIVER_NAME "usbhs_omap" #define OMAP_EHCI_DEVICE "ehci-omap" #define OMAP_OHCI_DEVICE "ohci-omap3" /* OMAP USBHOST Register addresses */ /* UHH Register Set */ #define OMAP_UHH_REVISION (0x00) #define OMAP_UHH_SYSCONFIG (0x10) #define OMAP_UHH_SYSCONFIG_MIDLEMODE (1 << 12) #define OMAP_UHH_SYSCONFIG_CACTIVITY (1 << 8) #define OMAP_UHH_SYSCONFIG_SIDLEMODE (1 << 3) #define OMAP_UHH_SYSCONFIG_ENAWAKEUP (1 << 2) #define OMAP_UHH_SYSCONFIG_SOFTRESET (1 << 1) #define OMAP_UHH_SYSCONFIG_AUTOIDLE (1 << 0) #define OMAP_UHH_SYSSTATUS (0x14) #define OMAP_UHH_HOSTCONFIG (0x40) #define OMAP_UHH_HOSTCONFIG_ULPI_BYPASS (1 << 0) #define OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS (1 << 0) #define OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS (1 << 11) #define OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS (1 << 12) #define OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN (1 << 2) #define OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN (1 << 3) #define OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN (1 << 4) #define OMAP_UHH_HOSTCONFIG_INCRX_ALIGN_EN (1 << 5) #define OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS (1 << 8) #define OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS (1 << 9) #define OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS (1 << 10) #define OMAP4_UHH_HOSTCONFIG_APP_START_CLK (1 << 31) /* OMAP4-specific defines */ #define OMAP4_UHH_SYSCONFIG_IDLEMODE_CLEAR (3 << 2) #define OMAP4_UHH_SYSCONFIG_NOIDLE (1 << 2) #define OMAP4_UHH_SYSCONFIG_STDBYMODE_CLEAR (3 << 4) #define OMAP4_UHH_SYSCONFIG_NOSTDBY (1 << 4) #define OMAP4_UHH_SYSCONFIG_SOFTRESET (1 << 0) #define OMAP4_P1_MODE_CLEAR (3 << 16) #define OMAP4_P1_MODE_TLL (1 << 16) #define OMAP4_P1_MODE_HSIC (3 << 16) #define OMAP4_P2_MODE_CLEAR (3 << 18) #define OMAP4_P2_MODE_TLL (1 << 18) #define OMAP4_P2_MODE_HSIC (3 << 18) #define OMAP_UHH_DEBUG_CSR (0x44) /* Values of UHH_REVISION - Note: these are not given in the TRM */ #define OMAP_USBHS_REV1 0x00000010 /* OMAP3 */ #define OMAP_USBHS_REV2 0x50700100 /* OMAP4 */ #define is_omap_usbhs_rev1(x) (x->usbhs_rev == OMAP_USBHS_REV1) #define is_omap_usbhs_rev2(x) (x->usbhs_rev == OMAP_USBHS_REV2) #define is_ehci_phy_mode(x) (x == OMAP_EHCI_PORT_MODE_PHY) #define is_ehci_tll_mode(x) (x == OMAP_EHCI_PORT_MODE_TLL) #define is_ehci_hsic_mode(x) (x == OMAP_EHCI_PORT_MODE_HSIC) struct usbhs_hcd_omap { struct clk *xclk60mhsp1_ck; struct clk *xclk60mhsp2_ck; struct clk *utmi_p1_fck; struct clk *usbhost_p1_fck; struct clk *utmi_p2_fck; struct clk *usbhost_p2_fck; struct clk *init_60m_fclk; struct clk *ehci_logic_fck; void __iomem *uhh_base; struct usbhs_omap_platform_data platdata; u32 usbhs_rev; spinlock_t lock; }; /*-------------------------------------------------------------------------*/ const char usbhs_driver_name[] = USBHS_DRIVER_NAME; static u64 usbhs_dmamask = DMA_BIT_MASK(32); /*-------------------------------------------------------------------------*/ static inline void usbhs_write(void __iomem *base, u32 reg, u32 val) { __raw_writel(val, base + reg); } static inline u32 usbhs_read(void __iomem *base, u32 reg) { return __raw_readl(base + reg); } static inline void usbhs_writeb(void __iomem *base, u8 reg, u8 val) { __raw_writeb(val, base + reg); } static inline u8 usbhs_readb(void __iomem *base, u8 reg) { return __raw_readb(base + reg); } /*-------------------------------------------------------------------------*/ static struct platform_device *omap_usbhs_alloc_child(const char *name, struct resource *res, int num_resources, void *pdata, size_t pdata_size, struct device *dev) { struct platform_device *child; int ret; child = platform_device_alloc(name, 0); if (!child) { dev_err(dev, "platform_device_alloc %s failed\n", name); goto err_end; } ret = platform_device_add_resources(child, res, num_resources); if (ret) { dev_err(dev, "platform_device_add_resources failed\n"); goto err_alloc; } ret = platform_device_add_data(child, pdata, pdata_size); if (ret) { dev_err(dev, "platform_device_add_data failed\n"); goto err_alloc; } child->dev.dma_mask = &usbhs_dmamask; dma_set_coherent_mask(&child->dev, DMA_BIT_MASK(32)); child->dev.parent = dev; ret = platform_device_add(child); if (ret) { dev_err(dev, "platform_device_add failed\n"); goto err_alloc; } return child; err_alloc: platform_device_put(child); err_end: return NULL; } static int omap_usbhs_alloc_children(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct usbhs_hcd_omap *omap; struct ehci_hcd_omap_platform_data *ehci_data; struct ohci_hcd_omap_platform_data *ohci_data; struct platform_device *ehci; struct platform_device *ohci; struct resource *res; struct resource resources[2]; int ret; omap = platform_get_drvdata(pdev); ehci_data = omap->platdata.ehci_data; ohci_data = omap->platdata.ohci_data; res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ehci"); if (!res) { dev_err(dev, "EHCI get resource IORESOURCE_MEM failed\n"); ret = -ENODEV; goto err_end; } resources[0] = *res; res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "ehci-irq"); if (!res) { dev_err(dev, " EHCI get resource IORESOURCE_IRQ failed\n"); ret = -ENODEV; goto err_end; } resources[1] = *res; ehci = omap_usbhs_alloc_child(OMAP_EHCI_DEVICE, resources, 2, ehci_data, sizeof(*ehci_data), dev); if (!ehci) { dev_err(dev, "omap_usbhs_alloc_child failed\n"); ret = -ENOMEM; goto err_end; } res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ohci"); if (!res) { dev_err(dev, "OHCI get resource IORESOURCE_MEM failed\n"); ret = -ENODEV; goto err_ehci; } resources[0] = *res; res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "ohci-irq"); if (!res) { dev_err(dev, "OHCI get resource IORESOURCE_IRQ failed\n"); ret = -ENODEV; goto err_ehci; } resources[1] = *res; ohci = omap_usbhs_alloc_child(OMAP_OHCI_DEVICE, resources, 2, ohci_data, sizeof(*ohci_data), dev); if (!ohci) { dev_err(dev, "omap_usbhs_alloc_child failed\n"); ret = -ENOMEM; goto err_ehci; } return 0; err_ehci: platform_device_unregister(ehci); err_end: return ret; } static bool is_ohci_port(enum usbhs_omap_port_mode pmode) { switch (pmode) { case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0: case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM: case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0: case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM: case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0: case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM: case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0: case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM: case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0: case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM: return true; default: return false; } } static int usbhs_runtime_resume(struct device *dev) { struct usbhs_hcd_omap *omap = dev_get_drvdata(dev); struct usbhs_omap_platform_data *pdata = &omap->platdata; unsigned long flags; dev_dbg(dev, "usbhs_runtime_resume\n"); if (!pdata) { dev_dbg(dev, "missing platform_data\n"); return -ENODEV; } omap_tll_enable(); spin_lock_irqsave(&omap->lock, flags); if (omap->ehci_logic_fck && !IS_ERR(omap->ehci_logic_fck)) clk_enable(omap->ehci_logic_fck); if (is_ehci_tll_mode(pdata->port_mode[0])) clk_enable(omap->usbhost_p1_fck); if (is_ehci_tll_mode(pdata->port_mode[1])) clk_enable(omap->usbhost_p2_fck); clk_enable(omap->utmi_p1_fck); clk_enable(omap->utmi_p2_fck); spin_unlock_irqrestore(&omap->lock, flags); return 0; } static int usbhs_runtime_suspend(struct device *dev) { struct usbhs_hcd_omap *omap = dev_get_drvdata(dev); struct usbhs_omap_platform_data *pdata = &omap->platdata; unsigned long flags; dev_dbg(dev, "usbhs_runtime_suspend\n"); if (!pdata) { dev_dbg(dev, "missing platform_data\n"); return -ENODEV; } spin_lock_irqsave(&omap->lock, flags); if (is_ehci_tll_mode(pdata->port_mode[0])) clk_disable(omap->usbhost_p1_fck); if (is_ehci_tll_mode(pdata->port_mode[1])) clk_disable(omap->usbhost_p2_fck); clk_disable(omap->utmi_p2_fck); clk_disable(omap->utmi_p1_fck); if (omap->ehci_logic_fck && !IS_ERR(omap->ehci_logic_fck)) clk_disable(omap->ehci_logic_fck); spin_unlock_irqrestore(&omap->lock, flags); omap_tll_disable(); return 0; } static void omap_usbhs_init(struct device *dev) { struct usbhs_hcd_omap *omap = dev_get_drvdata(dev); struct usbhs_omap_platform_data *pdata = &omap->platdata; unsigned long flags; unsigned reg; dev_dbg(dev, "starting TI HSUSB Controller\n"); if (pdata->ehci_data->phy_reset) { if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) gpio_request_one(pdata->ehci_data->reset_gpio_port[0], GPIOF_OUT_INIT_LOW, "USB1 PHY reset"); if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1])) gpio_request_one(pdata->ehci_data->reset_gpio_port[1], GPIOF_OUT_INIT_LOW, "USB2 PHY reset"); /* Hold the PHY in RESET for enough time till DIR is high */ udelay(10); } pm_runtime_get_sync(dev); spin_lock_irqsave(&omap->lock, flags); omap->usbhs_rev = usbhs_read(omap->uhh_base, OMAP_UHH_REVISION); dev_dbg(dev, "OMAP UHH_REVISION 0x%x\n", omap->usbhs_rev); reg = usbhs_read(omap->uhh_base, OMAP_UHH_HOSTCONFIG); /* setup ULPI bypass and burst configurations */ reg |= (OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN | OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN | OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN); reg |= OMAP4_UHH_HOSTCONFIG_APP_START_CLK; reg &= ~OMAP_UHH_HOSTCONFIG_INCRX_ALIGN_EN; if (is_omap_usbhs_rev1(omap)) { if (pdata->port_mode[0] == OMAP_USBHS_PORT_MODE_UNUSED) reg &= ~OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS; if (pdata->port_mode[1] == OMAP_USBHS_PORT_MODE_UNUSED) reg &= ~OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS; if (pdata->port_mode[2] == OMAP_USBHS_PORT_MODE_UNUSED) reg &= ~OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS; /* Bypass the TLL module for PHY mode operation */ if (cpu_is_omap3430() && (omap_rev() <= OMAP3430_REV_ES2_1)) { dev_dbg(dev, "OMAP3 ES version <= ES2.1\n"); if (is_ehci_phy_mode(pdata->port_mode[0]) || is_ehci_phy_mode(pdata->port_mode[1]) || is_ehci_phy_mode(pdata->port_mode[2])) reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_BYPASS; else reg |= OMAP_UHH_HOSTCONFIG_ULPI_BYPASS; } else { dev_dbg(dev, "OMAP3 ES version > ES2.1\n"); if (is_ehci_phy_mode(pdata->port_mode[0])) reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS; else reg |= OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS; if (is_ehci_phy_mode(pdata->port_mode[1])) reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS; else reg |= OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS; if (is_ehci_phy_mode(pdata->port_mode[2])) reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS; else reg |= OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS; } } else if (is_omap_usbhs_rev2(omap)) { /* Clear port mode fields for PHY mode*/ reg &= ~OMAP4_P1_MODE_CLEAR; reg &= ~OMAP4_P2_MODE_CLEAR; if (is_ehci_tll_mode(pdata->port_mode[0]) || (is_ohci_port(pdata->port_mode[0]))) reg |= OMAP4_P1_MODE_TLL; else if (is_ehci_hsic_mode(pdata->port_mode[0])) reg |= OMAP4_P1_MODE_HSIC; if (is_ehci_tll_mode(pdata->port_mode[1]) || (is_ohci_port(pdata->port_mode[1]))) reg |= OMAP4_P2_MODE_TLL; else if (is_ehci_hsic_mode(pdata->port_mode[1])) reg |= OMAP4_P2_MODE_HSIC; } usbhs_write(omap->uhh_base, OMAP_UHH_HOSTCONFIG, reg); dev_dbg(dev, "UHH setup done, uhh_hostconfig=%x\n", reg); spin_unlock_irqrestore(&omap->lock, flags); pm_runtime_put_sync(dev); if (pdata->ehci_data->phy_reset) { /* Hold the PHY in RESET for enough time till * PHY is settled and ready */ udelay(10); if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) gpio_set_value_cansleep (pdata->ehci_data->reset_gpio_port[0], 1); if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1])) gpio_set_value_cansleep (pdata->ehci_data->reset_gpio_port[1], 1); } } static void omap_usbhs_deinit(struct device *dev) { struct usbhs_hcd_omap *omap = dev_get_drvdata(dev); struct usbhs_omap_platform_data *pdata = &omap->platdata; if (pdata->ehci_data->phy_reset) { if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) gpio_free(pdata->ehci_data->reset_gpio_port[0]); if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1])) gpio_free(pdata->ehci_data->reset_gpio_port[1]); } } /** * usbhs_omap_probe - initialize TI-based HCDs * * Allocates basic resources for this USB host controller. */ static int usbhs_omap_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct usbhs_omap_platform_data *pdata = dev->platform_data; struct usbhs_hcd_omap *omap; struct resource *res; int ret = 0; int i; if (!pdata) { dev_err(dev, "Missing platform data\n"); ret = -ENOMEM; goto end_probe; } omap = kzalloc(sizeof(*omap), GFP_KERNEL); if (!omap) { dev_err(dev, "Memory allocation failed\n"); ret = -ENOMEM; goto end_probe; } spin_lock_init(&omap->lock); for (i = 0; i < OMAP3_HS_USB_PORTS; i++) omap->platdata.port_mode[i] = pdata->port_mode[i]; omap->platdata.ehci_data = pdata->ehci_data; omap->platdata.ohci_data = pdata->ohci_data; pm_runtime_enable(dev); for (i = 0; i < OMAP3_HS_USB_PORTS; i++) if (is_ehci_phy_mode(i) || is_ehci_tll_mode(i) || is_ehci_hsic_mode(i)) { omap->ehci_logic_fck = clk_get(dev, "ehci_logic_fck"); if (IS_ERR(omap->ehci_logic_fck)) { ret = PTR_ERR(omap->ehci_logic_fck); dev_warn(dev, "ehci_logic_fck failed:%d\n", ret); } break; } omap->utmi_p1_fck = clk_get(dev, "utmi_p1_gfclk"); if (IS_ERR(omap->utmi_p1_fck)) { ret = PTR_ERR(omap->utmi_p1_fck); dev_err(dev, "utmi_p1_gfclk failed error:%d\n", ret); goto err_end; } omap->xclk60mhsp1_ck = clk_get(dev, "xclk60mhsp1_ck"); if (IS_ERR(omap->xclk60mhsp1_ck)) { ret = PTR_ERR(omap->xclk60mhsp1_ck); dev_err(dev, "xclk60mhsp1_ck failed error:%d\n", ret); goto err_utmi_p1_fck; } omap->utmi_p2_fck = clk_get(dev, "utmi_p2_gfclk"); if (IS_ERR(omap->utmi_p2_fck)) { ret = PTR_ERR(omap->utmi_p2_fck); dev_err(dev, "utmi_p2_gfclk failed error:%d\n", ret); goto err_xclk60mhsp1_ck; } omap->xclk60mhsp2_ck = clk_get(dev, "xclk60mhsp2_ck"); if (IS_ERR(omap->xclk60mhsp2_ck)) { ret = PTR_ERR(omap->xclk60mhsp2_ck); dev_err(dev, "xclk60mhsp2_ck failed error:%d\n", ret); goto err_utmi_p2_fck; } omap->usbhost_p1_fck = clk_get(dev, "usb_host_hs_utmi_p1_clk"); if (IS_ERR(omap->usbhost_p1_fck)) { ret = PTR_ERR(omap->usbhost_p1_fck); dev_err(dev, "usbhost_p1_fck failed error:%d\n", ret); goto err_xclk60mhsp2_ck; } omap->usbhost_p2_fck = clk_get(dev, "usb_host_hs_utmi_p2_clk"); if (IS_ERR(omap->usbhost_p2_fck)) { ret = PTR_ERR(omap->usbhost_p2_fck); dev_err(dev, "usbhost_p2_fck failed error:%d\n", ret); goto err_usbhost_p1_fck; } omap->init_60m_fclk = clk_get(dev, "init_60m_fclk"); if (IS_ERR(omap->init_60m_fclk)) { ret = PTR_ERR(omap->init_60m_fclk); dev_err(dev, "init_60m_fclk failed error:%d\n", ret); goto err_usbhost_p2_fck; } if (is_ehci_phy_mode(pdata->port_mode[0])) { /* for OMAP3 , the clk set paretn fails */ ret = clk_set_parent(omap->utmi_p1_fck, omap->xclk60mhsp1_ck); if (ret != 0) dev_err(dev, "xclk60mhsp1_ck set parent" "failed error:%d\n", ret); } else if (is_ehci_tll_mode(pdata->port_mode[0])) { ret = clk_set_parent(omap->utmi_p1_fck, omap->init_60m_fclk); if (ret != 0) dev_err(dev, "init_60m_fclk set parent" "failed error:%d\n", ret); } if (is_ehci_phy_mode(pdata->port_mode[1])) { ret = clk_set_parent(omap->utmi_p2_fck, omap->xclk60mhsp2_ck); if (ret != 0) dev_err(dev, "xclk60mhsp2_ck set parent" "failed error:%d\n", ret); } else if (is_ehci_tll_mode(pdata->port_mode[1])) { ret = clk_set_parent(omap->utmi_p2_fck, omap->init_60m_fclk); if (ret != 0) dev_err(dev, "init_60m_fclk set parent" "failed error:%d\n", ret); } res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "uhh"); if (!res) { dev_err(dev, "UHH EHCI get resource failed\n"); ret = -ENODEV; goto err_init_60m_fclk; } omap->uhh_base = ioremap(res->start, resource_size(res)); if (!omap->uhh_base) { dev_err(dev, "UHH ioremap failed\n"); ret = -ENOMEM; goto err_init_60m_fclk; } platform_set_drvdata(pdev, omap); omap_usbhs_init(dev); ret = omap_usbhs_alloc_children(pdev); if (ret) { dev_err(dev, "omap_usbhs_alloc_children failed\n"); goto err_alloc; } goto end_probe; err_alloc: omap_usbhs_deinit(&pdev->dev); iounmap(omap->uhh_base); err_init_60m_fclk: clk_put(omap->init_60m_fclk); err_usbhost_p2_fck: clk_put(omap->usbhost_p2_fck); err_usbhost_p1_fck: clk_put(omap->usbhost_p1_fck); err_xclk60mhsp2_ck: clk_put(omap->xclk60mhsp2_ck); err_utmi_p2_fck: clk_put(omap->utmi_p2_fck); err_xclk60mhsp1_ck: clk_put(omap->xclk60mhsp1_ck); err_utmi_p1_fck: clk_put(omap->utmi_p1_fck); err_end: clk_put(omap->ehci_logic_fck); pm_runtime_disable(dev); kfree(omap); end_probe: return ret; } /** * usbhs_omap_remove - shutdown processing for UHH & TLL HCDs * @pdev: USB Host Controller being removed * * Reverses the effect of usbhs_omap_probe(). */ static int usbhs_omap_remove(struct platform_device *pdev) { struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev); omap_usbhs_deinit(&pdev->dev); iounmap(omap->uhh_base); clk_put(omap->init_60m_fclk); clk_put(omap->usbhost_p2_fck); clk_put(omap->usbhost_p1_fck); clk_put(omap->xclk60mhsp2_ck); clk_put(omap->utmi_p2_fck); clk_put(omap->xclk60mhsp1_ck); clk_put(omap->utmi_p1_fck); clk_put(omap->ehci_logic_fck); pm_runtime_disable(&pdev->dev); kfree(omap); return 0; } static const struct dev_pm_ops usbhsomap_dev_pm_ops = { .runtime_suspend = usbhs_runtime_suspend, .runtime_resume = usbhs_runtime_resume, }; static struct platform_driver usbhs_omap_driver = { .driver = { .name = (char *)usbhs_driver_name, .owner = THIS_MODULE, .pm = &usbhsomap_dev_pm_ops, }, .remove = __exit_p(usbhs_omap_remove), }; MODULE_AUTHOR("Keshava Munegowda <keshava_mgowda@ti.com>"); MODULE_ALIAS("platform:" USBHS_DRIVER_NAME); MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION("usb host common core driver for omap EHCI and OHCI"); static int __init omap_usbhs_drvinit(void) { return platform_driver_probe(&usbhs_omap_driver, usbhs_omap_probe); } /* * init before ehci and ohci drivers; * The usbhs core driver should be initialized much before * the omap ehci and ohci probe functions are called. * This usbhs core driver should be initialized after * usb tll driver */ fs_initcall_sync(omap_usbhs_drvinit); static void __exit omap_usbhs_drvexit(void) { platform_driver_unregister(&usbhs_omap_driver); } module_exit(omap_usbhs_drvexit);