![Linus Torvalds](/assets/img/avatar_default.png)
This is a collection of header file cleanups, mostly for OMAP and AT91, that keeps moving the platforms in the direction of multiplatform by removing the need for mach-dependent header files used in drivers and other places. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAABAgAGBQJQx2reAAoJEIwa5zzehBx3Z/oQAIHp8aXbUD0GvbBPQ2vIydZ8 Qfdh2ypbyFB9GSLmPP6BhurEFUcwmW3MH2r9Kq68omPt4XxrFEt1SdEn3TgZlhTY YYzEv2DLbWfmKCDBFAEFullsfVkrpggyou5ty30YVp/u2lVLvChpkciE5/9HADy5 uoh/W2KZcLE51tvnbRy/1DBaOtxEdCjJ9hTaef7FCB9ugOG+yMDYwIPRW/b4fNA6 o/1NuZTWp0H4ePRG2oqLxYnjSiF63DVTJZjSJ+c5gW34bWgh8+/xzaLFA9U++/ig meGUD1Oe65+ctr+Wk2mV29eb02jauUe6qvkwt+iFIDDopgc2mn5BcW+ENpgpjhe3 6l3ClRd94qh4cMWzqDa5PZCdetshiKqSH2IGpKS/dHNB1h5sBP7CCbvbalwzWd5n qjfkPC7kSFyU3XV+9SEAXE6HLKsiMQy9kRcKOMdTE5BA4FEAZk0wfiG9WcVCvS2D 9tDC3X0aScyXx4Mkd4wIAZVhY68QuI17fPft9zZSj691YiUW5cR2yF1qbCka0yd5 pHu/QSZg1+dUitMUvMPQmWJ15jnAtEYUtV/8zQFFVchgkxlrW+UtvW3zxghB6D+J ZwcjAMfQQz9fLoMQXlVovjQIhYsjw3SlV62ReBH7eyPs3+KfPIBn7Ks6mVQs3dS5 AMUWORsB5u92XHl9EL9C =aggA -----END PGP SIGNATURE----- Merge tag 'headers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC Header cleanups from Olof Johansson: "This is a collection of header file cleanups, mostly for OMAP and AT91, that keeps moving the platforms in the direction of multiplatform by removing the need for mach-dependent header files used in drivers and other places." Fix up mostly trivial conflicts as per Olof. * tag 'headers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (106 commits) ARM: OMAP2+: Move iommu/iovmm headers to platform_data ARM: OMAP2+: Make some definitions local ARM: OMAP2+: Move iommu2 to drivers/iommu/omap-iommu2.c ARM: OMAP2+: Move plat/iovmm.h to include/linux/omap-iommu.h ARM: OMAP2+: Move iopgtable header to drivers/iommu/ ARM: OMAP: Merge iommu2.h into iommu.h atmel: move ATMEL_MAX_UART to platform_data/atmel.h ARM: OMAP: Remove omap_init_consistent_dma_size() arm: at91: move at91rm9200 rtc header in drivers/rtc arm: at91: move reset controller header to arm/arm/mach-at91 arm: at91: move pit define to the driver arm: at91: move at91_shdwc.h to arch/arm/mach-at91 arm: at91: move board header to arch/arm/mach-at91 arn: at91: move at91_tc.h to arch/arm/mach-at91 arm: at91 move at91_aic.h to arch/arm/mach-at91 arm: at91 move board.h to arch/arm/mach-at91 arm: at91: move platfarm_data to include/linux/platform_data/atmel.h arm: at91: drop machine defconfig ARM: OMAP: Remove NEED_MACH_GPIO_H ARM: OMAP: Remove unnecessary mach and plat includes ...
730 lines
16 KiB
C
730 lines
16 KiB
C
/*
|
|
* 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/platform_device.h>
|
|
#include <linux/of_platform.h>
|
|
#include <linux/of_gpio.h>
|
|
#include <linux/platform_data/atmel.h>
|
|
|
|
#include <mach/hardware.h>
|
|
#include <asm/gpio.h>
|
|
|
|
#include <mach/cpu.h>
|
|
|
|
#ifndef CONFIG_ARCH_AT91
|
|
#error "CONFIG_ARCH_AT91 must be defined."
|
|
#endif
|
|
|
|
#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 and function clocks; sometimes also an AHB clock */
|
|
static struct clk *iclk, *fclk, *hclk;
|
|
static int clocked;
|
|
|
|
extern int usb_disabled(void);
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
static void at91_start_clock(void)
|
|
{
|
|
clk_enable(hclk);
|
|
clk_enable(iclk);
|
|
clk_enable(fclk);
|
|
clocked = 1;
|
|
}
|
|
|
|
static void at91_stop_clock(void)
|
|
{
|
|
clk_disable(fclk);
|
|
clk_disable(iclk);
|
|
clk_disable(hclk);
|
|
clocked = 0;
|
|
}
|
|
|
|
static void at91_start_hc(struct platform_device *pdev)
|
|
{
|
|
struct usb_hcd *hcd = platform_get_drvdata(pdev);
|
|
struct ohci_regs __iomem *regs = hcd->regs;
|
|
|
|
dev_dbg(&pdev->dev, "start\n");
|
|
|
|
/*
|
|
* Start the USB clocks.
|
|
*/
|
|
at91_start_clock();
|
|
|
|
/*
|
|
* 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;
|
|
|
|
dev_dbg(&pdev->dev, "stop\n");
|
|
|
|
/*
|
|
* Put the USB host controller into reset.
|
|
*/
|
|
writel(0, ®s->control);
|
|
|
|
/*
|
|
* Stop the USB clocks.
|
|
*/
|
|
at91_stop_clock();
|
|
}
|
|
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
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)
|
|
{
|
|
int retval;
|
|
struct usb_hcd *hcd = NULL;
|
|
|
|
if (pdev->num_resources != 2) {
|
|
pr_debug("hcd probe: invalid num_resources");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if ((pdev->resource[0].flags != IORESOURCE_MEM)
|
|
|| (pdev->resource[1].flags != IORESOURCE_IRQ)) {
|
|
pr_debug("hcd probe: invalid resource type\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
hcd = usb_create_hcd(driver, &pdev->dev, "at91");
|
|
if (!hcd)
|
|
return -ENOMEM;
|
|
hcd->rsrc_start = pdev->resource[0].start;
|
|
hcd->rsrc_len = resource_size(&pdev->resource[0]);
|
|
|
|
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
|
|
pr_debug("request_mem_region failed\n");
|
|
retval = -EBUSY;
|
|
goto err1;
|
|
}
|
|
|
|
hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
|
|
if (!hcd->regs) {
|
|
pr_debug("ioremap failed\n");
|
|
retval = -EIO;
|
|
goto err2;
|
|
}
|
|
|
|
iclk = clk_get(&pdev->dev, "ohci_clk");
|
|
if (IS_ERR(iclk)) {
|
|
dev_err(&pdev->dev, "failed to get ohci_clk\n");
|
|
retval = PTR_ERR(iclk);
|
|
goto err3;
|
|
}
|
|
fclk = clk_get(&pdev->dev, "uhpck");
|
|
if (IS_ERR(fclk)) {
|
|
dev_err(&pdev->dev, "failed to get uhpck\n");
|
|
retval = PTR_ERR(fclk);
|
|
goto err4;
|
|
}
|
|
hclk = clk_get(&pdev->dev, "hclk");
|
|
if (IS_ERR(hclk)) {
|
|
dev_err(&pdev->dev, "failed to get hclk\n");
|
|
retval = PTR_ERR(hclk);
|
|
goto err5;
|
|
}
|
|
|
|
at91_start_hc(pdev);
|
|
ohci_hcd_init(hcd_to_ohci(hcd));
|
|
|
|
retval = usb_add_hcd(hcd, pdev->resource[1].start, IRQF_SHARED);
|
|
if (retval == 0)
|
|
return retval;
|
|
|
|
/* Error handling */
|
|
at91_stop_hc(pdev);
|
|
|
|
clk_put(hclk);
|
|
err5:
|
|
clk_put(fclk);
|
|
err4:
|
|
clk_put(iclk);
|
|
|
|
err3:
|
|
iounmap(hcd->regs);
|
|
|
|
err2:
|
|
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
|
|
|
|
err1:
|
|
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);
|
|
iounmap(hcd->regs);
|
|
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
|
|
usb_put_hcd(hcd);
|
|
|
|
clk_put(hclk);
|
|
clk_put(fclk);
|
|
clk_put(iclk);
|
|
fclk = iclk = hclk = NULL;
|
|
|
|
dev_set_drvdata(&pdev->dev, NULL);
|
|
}
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
static int
|
|
ohci_at91_reset (struct usb_hcd *hcd)
|
|
{
|
|
struct at91_usbh_data *board = hcd->self.controller->platform_data;
|
|
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
|
|
int ret;
|
|
|
|
if ((ret = ohci_init(ohci)) < 0)
|
|
return ret;
|
|
|
|
ohci->num_ports = board->ports;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ohci_at91_start (struct usb_hcd *hcd)
|
|
{
|
|
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
|
|
int ret;
|
|
|
|
if ((ret = ohci_run(ohci)) < 0) {
|
|
dev_err(hcd->self.controller, "can't start %s\n",
|
|
hcd->self.bus_name);
|
|
ohci_stop(hcd);
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
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 = hcd->self.controller->platform_data;
|
|
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(0x0001);
|
|
|
|
if (pdata->overcurrent_supported) {
|
|
desc->wHubCharacteristics &= ~cpu_to_le16(HUB_CHAR_OCPM);
|
|
desc->wHubCharacteristics |= cpu_to_le16(0x0008|0x0001);
|
|
}
|
|
|
|
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 const struct hc_driver ohci_at91_hc_driver = {
|
|
.description = hcd_name,
|
|
.product_desc = "AT91 OHCI",
|
|
.hcd_priv_size = sizeof(struct ohci_hcd),
|
|
|
|
/*
|
|
* generic hardware linkage
|
|
*/
|
|
.irq = ohci_irq,
|
|
.flags = HCD_USB11 | HCD_MEMORY,
|
|
|
|
/*
|
|
* basic lifecycle operations
|
|
*/
|
|
.reset = ohci_at91_reset,
|
|
.start = ohci_at91_start,
|
|
.stop = ohci_stop,
|
|
.shutdown = ohci_shutdown,
|
|
|
|
/*
|
|
* managing i/o requests and associated device resources
|
|
*/
|
|
.urb_enqueue = ohci_urb_enqueue,
|
|
.urb_dequeue = ohci_urb_dequeue,
|
|
.endpoint_disable = ohci_endpoint_disable,
|
|
|
|
/*
|
|
* scheduling support
|
|
*/
|
|
.get_frame_number = ohci_get_frame,
|
|
|
|
/*
|
|
* root hub support
|
|
*/
|
|
.hub_status_data = ohci_at91_hub_status_data,
|
|
.hub_control = ohci_at91_hub_control,
|
|
#ifdef CONFIG_PM
|
|
.bus_suspend = ohci_bus_suspend,
|
|
.bus_resume = ohci_bus_resume,
|
|
#endif
|
|
.start_port_reset = ohci_start_port_reset,
|
|
};
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
static irqreturn_t ohci_hcd_at91_overcurrent_irq(int irq, void *data)
|
|
{
|
|
struct platform_device *pdev = data;
|
|
struct at91_usbh_data *pdata = pdev->dev.platform_data;
|
|
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;
|
|
}
|
|
|
|
#ifdef CONFIG_OF
|
|
static const struct of_device_id at91_ohci_dt_ids[] = {
|
|
{ .compatible = "atmel,at91rm9200-ohci" },
|
|
{ /* sentinel */ }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, at91_ohci_dt_ids);
|
|
|
|
static u64 at91_ohci_dma_mask = DMA_BIT_MASK(32);
|
|
|
|
static int ohci_at91_of_init(struct platform_device *pdev)
|
|
{
|
|
struct device_node *np = pdev->dev.of_node;
|
|
int i, gpio;
|
|
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.
|
|
*/
|
|
if (!pdev->dev.dma_mask)
|
|
pdev->dev.dma_mask = &at91_ohci_dma_mask;
|
|
|
|
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;
|
|
}
|
|
#else
|
|
static int ohci_at91_of_init(struct platform_device *pdev)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
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 = pdev->dev.platform_data;
|
|
|
|
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 = pdev->dev.platform_data;
|
|
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 platform_device *pdev, pm_message_t mesg)
|
|
{
|
|
struct usb_hcd *hcd = platform_get_drvdata(pdev);
|
|
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
|
|
|
|
if (device_may_wakeup(&pdev->dev))
|
|
enable_irq_wake(hcd->irq);
|
|
|
|
/*
|
|
* 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 (at91_suspend_entering_slow_clock()) {
|
|
ohci_usb_reset (ohci);
|
|
/* flush the writes */
|
|
(void) ohci_readl (ohci, &ohci->regs->control);
|
|
at91_stop_clock();
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ohci_hcd_at91_drv_resume(struct platform_device *pdev)
|
|
{
|
|
struct usb_hcd *hcd = platform_get_drvdata(pdev);
|
|
|
|
if (device_may_wakeup(&pdev->dev))
|
|
disable_irq_wake(hcd->irq);
|
|
|
|
if (!clocked)
|
|
at91_start_clock();
|
|
|
|
ohci_resume(hcd, false);
|
|
return 0;
|
|
}
|
|
#else
|
|
#define ohci_hcd_at91_drv_suspend NULL
|
|
#define ohci_hcd_at91_drv_resume NULL
|
|
#endif
|
|
|
|
MODULE_ALIAS("platform:at91_ohci");
|
|
|
|
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,
|
|
.suspend = ohci_hcd_at91_drv_suspend,
|
|
.resume = ohci_hcd_at91_drv_resume,
|
|
.driver = {
|
|
.name = "at91_ohci",
|
|
.owner = THIS_MODULE,
|
|
.of_match_table = of_match_ptr(at91_ohci_dt_ids),
|
|
},
|
|
};
|