| /* |
| * OHCI HCD (Host Controller Driver) for USB. |
| * |
| * Copyright (C) 2004 SAN People (Pty) Ltd. |
| * Copyright (C) 2005 Thibaut VARENE <varenet@parisc-linux.org> |
| * |
| * AT91 Bus Glue |
| * |
| * Based on fragments of 2.4 driver by Rick Bronson. |
| * Based on ohci-omap.c |
| * |
| * This file is licenced under the GPL. |
| */ |
| |
| #include <linux/clk.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/of_platform.h> |
| #include <linux/of_gpio.h> |
| #include <linux/platform_device.h> |
| #include <linux/platform_data/atmel.h> |
| #include <linux/io.h> |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/usb.h> |
| #include <linux/usb/hcd.h> |
| |
| #include <asm/gpio.h> |
| |
| #include "ohci.h" |
| |
| #define valid_port(index) ((index) >= 0 && (index) < AT91_MAX_USBH_PORTS) |
| #define at91_for_each_port(index) \ |
| for ((index) = 0; (index) < AT91_MAX_USBH_PORTS; (index)++) |
| |
| /* interface, function and usb clocks; sometimes also an AHB clock */ |
| #define hcd_to_ohci_at91_priv(h) \ |
| ((struct ohci_at91_priv *)hcd_to_ohci(h)->priv) |
| |
| #define AT91_MAX_USBH_PORTS 3 |
| struct at91_usbh_data { |
| int vbus_pin[AT91_MAX_USBH_PORTS]; /* port power-control pin */ |
| int overcurrent_pin[AT91_MAX_USBH_PORTS]; |
| u8 ports; /* number of ports on root hub */ |
| u8 overcurrent_supported; |
| u8 vbus_pin_active_low[AT91_MAX_USBH_PORTS]; |
| u8 overcurrent_status[AT91_MAX_USBH_PORTS]; |
| u8 overcurrent_changed[AT91_MAX_USBH_PORTS]; |
| }; |
| |
| struct ohci_at91_priv { |
| struct clk *iclk; |
| struct clk *fclk; |
| struct clk *hclk; |
| bool clocked; |
| bool wakeup; /* Saved wake-up state for resume */ |
| }; |
| /* interface and function clocks; sometimes also an AHB clock */ |
| |
| #define DRIVER_DESC "OHCI Atmel driver" |
| |
| static const char hcd_name[] = "ohci-atmel"; |
| |
| static struct hc_driver __read_mostly ohci_at91_hc_driver; |
| |
| static const struct ohci_driver_overrides ohci_at91_drv_overrides __initconst = { |
| .extra_priv_size = sizeof(struct ohci_at91_priv), |
| }; |
| |
| extern int usb_disabled(void); |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| static void at91_start_clock(struct ohci_at91_priv *ohci_at91) |
| { |
| if (ohci_at91->clocked) |
| return; |
| |
| clk_set_rate(ohci_at91->fclk, 48000000); |
| clk_prepare_enable(ohci_at91->hclk); |
| clk_prepare_enable(ohci_at91->iclk); |
| clk_prepare_enable(ohci_at91->fclk); |
| ohci_at91->clocked = true; |
| } |
| |
| static void at91_stop_clock(struct ohci_at91_priv *ohci_at91) |
| { |
| if (!ohci_at91->clocked) |
| return; |
| |
| clk_disable_unprepare(ohci_at91->fclk); |
| clk_disable_unprepare(ohci_at91->iclk); |
| clk_disable_unprepare(ohci_at91->hclk); |
| ohci_at91->clocked = false; |
| } |
| |
| static void at91_start_hc(struct platform_device *pdev) |
| { |
| struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| struct ohci_regs __iomem *regs = hcd->regs; |
| struct ohci_at91_priv *ohci_at91 = hcd_to_ohci_at91_priv(hcd); |
| |
| dev_dbg(&pdev->dev, "start\n"); |
| |
| /* |
| * Start the USB clocks. |
| */ |
| at91_start_clock(ohci_at91); |
| |
| /* |
| * The USB host controller must remain in reset. |
| */ |
| writel(0, ®s->control); |
| } |
| |
| static void at91_stop_hc(struct platform_device *pdev) |
| { |
| struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| struct ohci_regs __iomem *regs = hcd->regs; |
| struct ohci_at91_priv *ohci_at91 = hcd_to_ohci_at91_priv(hcd); |
| |
| dev_dbg(&pdev->dev, "stop\n"); |
| |
| /* |
| * Put the USB host controller into reset. |
| */ |
| writel(0, ®s->control); |
| |
| /* |
| * Stop the USB clocks. |
| */ |
| at91_stop_clock(ohci_at91); |
| } |
| |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| static void usb_hcd_at91_remove (struct usb_hcd *, struct platform_device *); |
| |
| /* configure so an HC device and id are always provided */ |
| /* always called with process context; sleeping is OK */ |
| |
| |
| /** |
| * usb_hcd_at91_probe - initialize AT91-based HCDs |
| * Context: !in_interrupt() |
| * |
| * Allocates basic resources for this USB host controller, and |
| * then invokes the start() method for the HCD associated with it |
| * through the hotplug entry's driver_data. |
| */ |
| static int usb_hcd_at91_probe(const struct hc_driver *driver, |
| struct platform_device *pdev) |
| { |
| struct at91_usbh_data *board; |
| struct ohci_hcd *ohci; |
| int retval; |
| struct usb_hcd *hcd; |
| struct ohci_at91_priv *ohci_at91; |
| struct device *dev = &pdev->dev; |
| struct resource *res; |
| int irq; |
| |
| irq = platform_get_irq(pdev, 0); |
| if (irq < 0) { |
| dev_dbg(dev, "hcd probe: missing irq resource\n"); |
| return irq; |
| } |
| |
| hcd = usb_create_hcd(driver, dev, "at91"); |
| if (!hcd) |
| return -ENOMEM; |
| ohci_at91 = hcd_to_ohci_at91_priv(hcd); |
| |
| res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| hcd->regs = devm_ioremap_resource(dev, res); |
| if (IS_ERR(hcd->regs)) { |
| retval = PTR_ERR(hcd->regs); |
| goto err; |
| } |
| hcd->rsrc_start = res->start; |
| hcd->rsrc_len = resource_size(res); |
| |
| ohci_at91->iclk = devm_clk_get(dev, "ohci_clk"); |
| if (IS_ERR(ohci_at91->iclk)) { |
| dev_err(dev, "failed to get ohci_clk\n"); |
| retval = PTR_ERR(ohci_at91->iclk); |
| goto err; |
| } |
| ohci_at91->fclk = devm_clk_get(dev, "uhpck"); |
| if (IS_ERR(ohci_at91->fclk)) { |
| dev_err(dev, "failed to get uhpck\n"); |
| retval = PTR_ERR(ohci_at91->fclk); |
| goto err; |
| } |
| ohci_at91->hclk = devm_clk_get(dev, "hclk"); |
| if (IS_ERR(ohci_at91->hclk)) { |
| dev_err(dev, "failed to get hclk\n"); |
| retval = PTR_ERR(ohci_at91->hclk); |
| goto err; |
| } |
| |
| board = hcd->self.controller->platform_data; |
| ohci = hcd_to_ohci(hcd); |
| ohci->num_ports = board->ports; |
| at91_start_hc(pdev); |
| |
| retval = usb_add_hcd(hcd, irq, IRQF_SHARED); |
| if (retval == 0) { |
| device_wakeup_enable(hcd->self.controller); |
| return retval; |
| } |
| |
| /* Error handling */ |
| at91_stop_hc(pdev); |
| |
| err: |
| usb_put_hcd(hcd); |
| return retval; |
| } |
| |
| |
| /* may be called with controller, bus, and devices active */ |
| |
| /** |
| * usb_hcd_at91_remove - shutdown processing for AT91-based HCDs |
| * @dev: USB Host Controller being removed |
| * Context: !in_interrupt() |
| * |
| * Reverses the effect of usb_hcd_at91_probe(), first invoking |
| * the HCD's stop() method. It is always called from a thread |
| * context, "rmmod" or something similar. |
| * |
| */ |
| static void usb_hcd_at91_remove(struct usb_hcd *hcd, |
| struct platform_device *pdev) |
| { |
| usb_remove_hcd(hcd); |
| at91_stop_hc(pdev); |
| usb_put_hcd(hcd); |
| } |
| |
| /*-------------------------------------------------------------------------*/ |
| static void ohci_at91_usb_set_power(struct at91_usbh_data *pdata, int port, int enable) |
| { |
| if (!valid_port(port)) |
| return; |
| |
| if (!gpio_is_valid(pdata->vbus_pin[port])) |
| return; |
| |
| gpio_set_value(pdata->vbus_pin[port], |
| pdata->vbus_pin_active_low[port] ^ enable); |
| } |
| |
| static int ohci_at91_usb_get_power(struct at91_usbh_data *pdata, int port) |
| { |
| if (!valid_port(port)) |
| return -EINVAL; |
| |
| if (!gpio_is_valid(pdata->vbus_pin[port])) |
| return -EINVAL; |
| |
| return gpio_get_value(pdata->vbus_pin[port]) ^ |
| pdata->vbus_pin_active_low[port]; |
| } |
| |
| /* |
| * Update the status data from the hub with the over-current indicator change. |
| */ |
| static int ohci_at91_hub_status_data(struct usb_hcd *hcd, char *buf) |
| { |
| struct at91_usbh_data *pdata = hcd->self.controller->platform_data; |
| int length = ohci_hub_status_data(hcd, buf); |
| int port; |
| |
| at91_for_each_port(port) { |
| if (pdata->overcurrent_changed[port]) { |
| if (!length) |
| length = 1; |
| buf[0] |= 1 << (port + 1); |
| } |
| } |
| |
| return length; |
| } |
| |
| /* |
| * Look at the control requests to the root hub and see if we need to override. |
| */ |
| static int ohci_at91_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, |
| u16 wIndex, char *buf, u16 wLength) |
| { |
| struct at91_usbh_data *pdata = dev_get_platdata(hcd->self.controller); |
| struct usb_hub_descriptor *desc; |
| int ret = -EINVAL; |
| u32 *data = (u32 *)buf; |
| |
| dev_dbg(hcd->self.controller, |
| "ohci_at91_hub_control(%p,0x%04x,0x%04x,0x%04x,%p,%04x)\n", |
| hcd, typeReq, wValue, wIndex, buf, wLength); |
| |
| wIndex--; |
| |
| switch (typeReq) { |
| case SetPortFeature: |
| if (wValue == USB_PORT_FEAT_POWER) { |
| dev_dbg(hcd->self.controller, "SetPortFeat: POWER\n"); |
| if (valid_port(wIndex)) { |
| ohci_at91_usb_set_power(pdata, wIndex, 1); |
| ret = 0; |
| } |
| |
| goto out; |
| } |
| break; |
| |
| case ClearPortFeature: |
| switch (wValue) { |
| case USB_PORT_FEAT_C_OVER_CURRENT: |
| dev_dbg(hcd->self.controller, |
| "ClearPortFeature: C_OVER_CURRENT\n"); |
| |
| if (valid_port(wIndex)) { |
| pdata->overcurrent_changed[wIndex] = 0; |
| pdata->overcurrent_status[wIndex] = 0; |
| } |
| |
| goto out; |
| |
| case USB_PORT_FEAT_OVER_CURRENT: |
| dev_dbg(hcd->self.controller, |
| "ClearPortFeature: OVER_CURRENT\n"); |
| |
| if (valid_port(wIndex)) |
| pdata->overcurrent_status[wIndex] = 0; |
| |
| goto out; |
| |
| case USB_PORT_FEAT_POWER: |
| dev_dbg(hcd->self.controller, |
| "ClearPortFeature: POWER\n"); |
| |
| if (valid_port(wIndex)) { |
| ohci_at91_usb_set_power(pdata, wIndex, 0); |
| return 0; |
| } |
| } |
| break; |
| } |
| |
| ret = ohci_hub_control(hcd, typeReq, wValue, wIndex + 1, buf, wLength); |
| if (ret) |
| goto out; |
| |
| switch (typeReq) { |
| case GetHubDescriptor: |
| |
| /* update the hub's descriptor */ |
| |
| desc = (struct usb_hub_descriptor *)buf; |
| |
| dev_dbg(hcd->self.controller, "wHubCharacteristics 0x%04x\n", |
| desc->wHubCharacteristics); |
| |
| /* remove the old configurations for power-switching, and |
| * over-current protection, and insert our new configuration |
| */ |
| |
| desc->wHubCharacteristics &= ~cpu_to_le16(HUB_CHAR_LPSM); |
| desc->wHubCharacteristics |= |
| cpu_to_le16(HUB_CHAR_INDV_PORT_LPSM); |
| |
| if (pdata->overcurrent_supported) { |
| desc->wHubCharacteristics &= ~cpu_to_le16(HUB_CHAR_OCPM); |
| desc->wHubCharacteristics |= |
| cpu_to_le16(HUB_CHAR_INDV_PORT_OCPM); |
| } |
| |
| dev_dbg(hcd->self.controller, "wHubCharacteristics after 0x%04x\n", |
| desc->wHubCharacteristics); |
| |
| return ret; |
| |
| case GetPortStatus: |
| /* check port status */ |
| |
| dev_dbg(hcd->self.controller, "GetPortStatus(%d)\n", wIndex); |
| |
| if (valid_port(wIndex)) { |
| if (!ohci_at91_usb_get_power(pdata, wIndex)) |
| *data &= ~cpu_to_le32(RH_PS_PPS); |
| |
| if (pdata->overcurrent_changed[wIndex]) |
| *data |= cpu_to_le32(RH_PS_OCIC); |
| |
| if (pdata->overcurrent_status[wIndex]) |
| *data |= cpu_to_le32(RH_PS_POCI); |
| } |
| } |
| |
| out: |
| return ret; |
| } |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| static irqreturn_t ohci_hcd_at91_overcurrent_irq(int irq, void *data) |
| { |
| struct platform_device *pdev = data; |
| struct at91_usbh_data *pdata = dev_get_platdata(&pdev->dev); |
| int val, gpio, port; |
| |
| /* From the GPIO notifying the over-current situation, find |
| * out the corresponding port */ |
| at91_for_each_port(port) { |
| if (gpio_is_valid(pdata->overcurrent_pin[port]) && |
| gpio_to_irq(pdata->overcurrent_pin[port]) == irq) { |
| gpio = pdata->overcurrent_pin[port]; |
| break; |
| } |
| } |
| |
| if (port == AT91_MAX_USBH_PORTS) { |
| dev_err(& pdev->dev, "overcurrent interrupt from unknown GPIO\n"); |
| return IRQ_HANDLED; |
| } |
| |
| val = gpio_get_value(gpio); |
| |
| /* When notified of an over-current situation, disable power |
| on the corresponding port, and mark this port in |
| over-current. */ |
| if (!val) { |
| ohci_at91_usb_set_power(pdata, port, 0); |
| pdata->overcurrent_status[port] = 1; |
| pdata->overcurrent_changed[port] = 1; |
| } |
| |
| dev_dbg(& pdev->dev, "overcurrent situation %s\n", |
| val ? "exited" : "notified"); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static const struct of_device_id at91_ohci_dt_ids[] = { |
| { .compatible = "atmel,at91rm9200-ohci" }, |
| { /* sentinel */ } |
| }; |
| |
| MODULE_DEVICE_TABLE(of, at91_ohci_dt_ids); |
| |
| static int ohci_at91_of_init(struct platform_device *pdev) |
| { |
| struct device_node *np = pdev->dev.of_node; |
| int i, gpio, ret; |
| enum of_gpio_flags flags; |
| struct at91_usbh_data *pdata; |
| u32 ports; |
| |
| if (!np) |
| return 0; |
| |
| /* Right now device-tree probed devices don't get dma_mask set. |
| * Since shared usb code relies on it, set it here for now. |
| * Once we have dma capability bindings this can go away. |
| */ |
| ret = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
| if (ret) |
| return ret; |
| |
| pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); |
| if (!pdata) |
| return -ENOMEM; |
| |
| if (!of_property_read_u32(np, "num-ports", &ports)) |
| pdata->ports = ports; |
| |
| at91_for_each_port(i) { |
| gpio = of_get_named_gpio_flags(np, "atmel,vbus-gpio", i, &flags); |
| pdata->vbus_pin[i] = gpio; |
| if (!gpio_is_valid(gpio)) |
| continue; |
| pdata->vbus_pin_active_low[i] = flags & OF_GPIO_ACTIVE_LOW; |
| } |
| |
| at91_for_each_port(i) |
| pdata->overcurrent_pin[i] = |
| of_get_named_gpio_flags(np, "atmel,oc-gpio", i, &flags); |
| |
| pdev->dev.platform_data = pdata; |
| |
| return 0; |
| } |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| static int ohci_hcd_at91_drv_probe(struct platform_device *pdev) |
| { |
| struct at91_usbh_data *pdata; |
| int i; |
| int gpio; |
| int ret; |
| |
| ret = ohci_at91_of_init(pdev); |
| if (ret) |
| return ret; |
| |
| pdata = dev_get_platdata(&pdev->dev); |
| |
| if (pdata) { |
| at91_for_each_port(i) { |
| /* |
| * do not configure PIO if not in relation with |
| * real USB port on board |
| */ |
| if (i >= pdata->ports) { |
| pdata->vbus_pin[i] = -EINVAL; |
| pdata->overcurrent_pin[i] = -EINVAL; |
| break; |
| } |
| |
| if (!gpio_is_valid(pdata->vbus_pin[i])) |
| continue; |
| gpio = pdata->vbus_pin[i]; |
| |
| ret = gpio_request(gpio, "ohci_vbus"); |
| if (ret) { |
| dev_err(&pdev->dev, |
| "can't request vbus gpio %d\n", gpio); |
| continue; |
| } |
| ret = gpio_direction_output(gpio, |
| !pdata->vbus_pin_active_low[i]); |
| if (ret) { |
| dev_err(&pdev->dev, |
| "can't put vbus gpio %d as output %d\n", |
| gpio, !pdata->vbus_pin_active_low[i]); |
| gpio_free(gpio); |
| continue; |
| } |
| |
| ohci_at91_usb_set_power(pdata, i, 1); |
| } |
| |
| at91_for_each_port(i) { |
| if (!gpio_is_valid(pdata->overcurrent_pin[i])) |
| continue; |
| gpio = pdata->overcurrent_pin[i]; |
| |
| ret = gpio_request(gpio, "ohci_overcurrent"); |
| if (ret) { |
| dev_err(&pdev->dev, |
| "can't request overcurrent gpio %d\n", |
| gpio); |
| continue; |
| } |
| |
| ret = gpio_direction_input(gpio); |
| if (ret) { |
| dev_err(&pdev->dev, |
| "can't configure overcurrent gpio %d as input\n", |
| gpio); |
| gpio_free(gpio); |
| continue; |
| } |
| |
| ret = request_irq(gpio_to_irq(gpio), |
| ohci_hcd_at91_overcurrent_irq, |
| IRQF_SHARED, "ohci_overcurrent", pdev); |
| if (ret) { |
| gpio_free(gpio); |
| dev_err(&pdev->dev, |
| "can't get gpio IRQ for overcurrent\n"); |
| } |
| } |
| } |
| |
| device_init_wakeup(&pdev->dev, 1); |
| return usb_hcd_at91_probe(&ohci_at91_hc_driver, pdev); |
| } |
| |
| static int ohci_hcd_at91_drv_remove(struct platform_device *pdev) |
| { |
| struct at91_usbh_data *pdata = dev_get_platdata(&pdev->dev); |
| int i; |
| |
| if (pdata) { |
| at91_for_each_port(i) { |
| if (!gpio_is_valid(pdata->vbus_pin[i])) |
| continue; |
| ohci_at91_usb_set_power(pdata, i, 0); |
| gpio_free(pdata->vbus_pin[i]); |
| } |
| |
| at91_for_each_port(i) { |
| if (!gpio_is_valid(pdata->overcurrent_pin[i])) |
| continue; |
| free_irq(gpio_to_irq(pdata->overcurrent_pin[i]), pdev); |
| gpio_free(pdata->overcurrent_pin[i]); |
| } |
| } |
| |
| device_init_wakeup(&pdev->dev, 0); |
| usb_hcd_at91_remove(platform_get_drvdata(pdev), pdev); |
| return 0; |
| } |
| |
| #ifdef CONFIG_PM |
| |
| static int |
| ohci_hcd_at91_drv_suspend(struct device *dev) |
| { |
| struct usb_hcd *hcd = dev_get_drvdata(dev); |
| struct ohci_hcd *ohci = hcd_to_ohci(hcd); |
| struct ohci_at91_priv *ohci_at91 = hcd_to_ohci_at91_priv(hcd); |
| int ret; |
| |
| /* |
| * Disable wakeup if we are going to sleep with slow clock mode |
| * enabled. |
| */ |
| ohci_at91->wakeup = device_may_wakeup(dev) |
| && !at91_suspend_entering_slow_clock(); |
| |
| if (ohci_at91->wakeup) |
| enable_irq_wake(hcd->irq); |
| |
| ret = ohci_suspend(hcd, ohci_at91->wakeup); |
| if (ret) { |
| if (ohci_at91->wakeup) |
| disable_irq_wake(hcd->irq); |
| return ret; |
| } |
| /* |
| * The integrated transceivers seem unable to notice disconnect, |
| * reconnect, or wakeup without the 48 MHz clock active. so for |
| * correctness, always discard connection state (using reset). |
| * |
| * REVISIT: some boards will be able to turn VBUS off... |
| */ |
| if (!ohci_at91->wakeup) { |
| ohci->hc_control = ohci_readl(ohci, &ohci->regs->control); |
| ohci->hc_control &= OHCI_CTRL_RWC; |
| ohci_writel(ohci, ohci->hc_control, &ohci->regs->control); |
| ohci->rh_state = OHCI_RH_HALTED; |
| |
| /* flush the writes */ |
| (void) ohci_readl (ohci, &ohci->regs->control); |
| at91_stop_clock(ohci_at91); |
| } |
| |
| return ret; |
| } |
| |
| static int ohci_hcd_at91_drv_resume(struct device *dev) |
| { |
| struct usb_hcd *hcd = dev_get_drvdata(dev); |
| struct ohci_at91_priv *ohci_at91 = hcd_to_ohci_at91_priv(hcd); |
| |
| if (ohci_at91->wakeup) |
| disable_irq_wake(hcd->irq); |
| |
| at91_start_clock(ohci_at91); |
| |
| ohci_resume(hcd, false); |
| return 0; |
| } |
| #endif |
| |
| static SIMPLE_DEV_PM_OPS(ohci_hcd_at91_pm_ops, ohci_hcd_at91_drv_suspend, |
| ohci_hcd_at91_drv_resume); |
| |
| static struct platform_driver ohci_hcd_at91_driver = { |
| .probe = ohci_hcd_at91_drv_probe, |
| .remove = ohci_hcd_at91_drv_remove, |
| .shutdown = usb_hcd_platform_shutdown, |
| .driver = { |
| .name = "at91_ohci", |
| .pm = &ohci_hcd_at91_pm_ops, |
| .of_match_table = at91_ohci_dt_ids, |
| }, |
| }; |
| |
| static int __init ohci_at91_init(void) |
| { |
| if (usb_disabled()) |
| return -ENODEV; |
| |
| pr_info("%s: " DRIVER_DESC "\n", hcd_name); |
| ohci_init_driver(&ohci_at91_hc_driver, &ohci_at91_drv_overrides); |
| |
| /* |
| * The Atmel HW has some unusual quirks, which require Atmel-specific |
| * workarounds. We override certain hc_driver functions here to |
| * achieve that. We explicitly do not enhance ohci_driver_overrides to |
| * allow this more easily, since this is an unusual case, and we don't |
| * want to encourage others to override these functions by making it |
| * too easy. |
| */ |
| |
| ohci_at91_hc_driver.hub_status_data = ohci_at91_hub_status_data; |
| ohci_at91_hc_driver.hub_control = ohci_at91_hub_control; |
| |
| return platform_driver_register(&ohci_hcd_at91_driver); |
| } |
| module_init(ohci_at91_init); |
| |
| static void __exit ohci_at91_cleanup(void) |
| { |
| platform_driver_unregister(&ohci_hcd_at91_driver); |
| } |
| module_exit(ohci_at91_cleanup); |
| |
| MODULE_DESCRIPTION(DRIVER_DESC); |
| MODULE_LICENSE("GPL"); |
| MODULE_ALIAS("platform:at91_ohci"); |