mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 12:43:55 +08:00
74aee796c6
Remove unused variable in ohci-ep93xx.c. This only shows up when CONFIG_PM is enabled. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Lennert Buytenhek <kernel@wantstofly.org> Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
219 lines
4.9 KiB
C
219 lines
4.9 KiB
C
/*
|
|
* OHCI HCD (Host Controller Driver) for USB.
|
|
*
|
|
* (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
|
|
* (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
|
|
* (C) Copyright 2002 Hewlett-Packard Company
|
|
*
|
|
* Bus Glue for ep93xx.
|
|
*
|
|
* Written by Christopher Hoover <ch@hpl.hp.com>
|
|
* Based on fragments of previous driver by Russell King et al.
|
|
*
|
|
* Modified for LH7A404 from ohci-sa1111.c
|
|
* by Durgesh Pattamatta <pattamattad@sharpsec.com>
|
|
*
|
|
* Modified for pxa27x from ohci-lh7a404.c
|
|
* by Nick Bane <nick@cecomputing.co.uk> 26-8-2004
|
|
*
|
|
* Modified for ep93xx from ohci-pxa27x.c
|
|
* by Lennert Buytenhek <buytenh@wantstofly.org> 28-2-2006
|
|
* Based on an earlier driver by Ray Lehtiniemi
|
|
*
|
|
* This file is licenced under the GPL.
|
|
*/
|
|
|
|
#include <linux/clk.h>
|
|
#include <linux/device.h>
|
|
#include <linux/signal.h>
|
|
#include <linux/platform_device.h>
|
|
|
|
static struct clk *usb_host_clock;
|
|
|
|
static void ep93xx_start_hc(struct device *dev)
|
|
{
|
|
clk_enable(usb_host_clock);
|
|
}
|
|
|
|
static void ep93xx_stop_hc(struct device *dev)
|
|
{
|
|
clk_disable(usb_host_clock);
|
|
}
|
|
|
|
static int usb_hcd_ep93xx_probe(const struct hc_driver *driver,
|
|
struct platform_device *pdev)
|
|
{
|
|
int retval;
|
|
struct usb_hcd *hcd;
|
|
|
|
if (pdev->resource[1].flags != IORESOURCE_IRQ) {
|
|
dbg("resource[1] is not IORESOURCE_IRQ");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
hcd = usb_create_hcd(driver, &pdev->dev, "ep93xx");
|
|
if (hcd == NULL)
|
|
return -ENOMEM;
|
|
|
|
hcd->rsrc_start = pdev->resource[0].start;
|
|
hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
|
|
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
|
|
usb_put_hcd(hcd);
|
|
retval = -EBUSY;
|
|
goto err1;
|
|
}
|
|
|
|
hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
|
|
if (hcd->regs == NULL) {
|
|
dbg("ioremap failed");
|
|
retval = -ENOMEM;
|
|
goto err2;
|
|
}
|
|
|
|
usb_host_clock = clk_get(&pdev->dev, NULL);
|
|
if (IS_ERR(usb_host_clock)) {
|
|
dbg("clk_get failed");
|
|
retval = PTR_ERR(usb_host_clock);
|
|
goto err3;
|
|
}
|
|
|
|
ep93xx_start_hc(&pdev->dev);
|
|
|
|
ohci_hcd_init(hcd_to_ohci(hcd));
|
|
|
|
retval = usb_add_hcd(hcd, pdev->resource[1].start, IRQF_DISABLED);
|
|
if (retval == 0)
|
|
return retval;
|
|
|
|
ep93xx_stop_hc(&pdev->dev);
|
|
err3:
|
|
iounmap(hcd->regs);
|
|
err2:
|
|
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
|
|
err1:
|
|
usb_put_hcd(hcd);
|
|
|
|
return retval;
|
|
}
|
|
|
|
static void usb_hcd_ep93xx_remove(struct usb_hcd *hcd,
|
|
struct platform_device *pdev)
|
|
{
|
|
usb_remove_hcd(hcd);
|
|
ep93xx_stop_hc(&pdev->dev);
|
|
clk_put(usb_host_clock);
|
|
iounmap(hcd->regs);
|
|
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
|
|
usb_put_hcd(hcd);
|
|
}
|
|
|
|
static int __devinit ohci_ep93xx_start(struct usb_hcd *hcd)
|
|
{
|
|
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
|
|
int ret;
|
|
|
|
if ((ret = ohci_init(ohci)) < 0)
|
|
return ret;
|
|
|
|
if ((ret = ohci_run(ohci)) < 0) {
|
|
err("can't start %s", hcd->self.bus_name);
|
|
ohci_stop(hcd);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct hc_driver ohci_ep93xx_hc_driver = {
|
|
.description = hcd_name,
|
|
.product_desc = "EP93xx OHCI",
|
|
.hcd_priv_size = sizeof(struct ohci_hcd),
|
|
.irq = ohci_irq,
|
|
.flags = HCD_USB11 | HCD_MEMORY,
|
|
.start = ohci_ep93xx_start,
|
|
.stop = ohci_stop,
|
|
.shutdown = ohci_shutdown,
|
|
.urb_enqueue = ohci_urb_enqueue,
|
|
.urb_dequeue = ohci_urb_dequeue,
|
|
.endpoint_disable = ohci_endpoint_disable,
|
|
.get_frame_number = ohci_get_frame,
|
|
.hub_status_data = ohci_hub_status_data,
|
|
.hub_control = ohci_hub_control,
|
|
#ifdef CONFIG_PM
|
|
.bus_suspend = ohci_bus_suspend,
|
|
.bus_resume = ohci_bus_resume,
|
|
#endif
|
|
.start_port_reset = ohci_start_port_reset,
|
|
};
|
|
|
|
extern int usb_disabled(void);
|
|
|
|
static int ohci_hcd_ep93xx_drv_probe(struct platform_device *pdev)
|
|
{
|
|
int ret;
|
|
|
|
ret = -ENODEV;
|
|
if (!usb_disabled())
|
|
ret = usb_hcd_ep93xx_probe(&ohci_ep93xx_hc_driver, pdev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ohci_hcd_ep93xx_drv_remove(struct platform_device *pdev)
|
|
{
|
|
struct usb_hcd *hcd = platform_get_drvdata(pdev);
|
|
|
|
usb_hcd_ep93xx_remove(hcd, pdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int ohci_hcd_ep93xx_drv_suspend(struct platform_device *pdev, pm_message_t state)
|
|
{
|
|
struct usb_hcd *hcd = platform_get_drvdata(pdev);
|
|
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
|
|
|
|
if (time_before(jiffies, ohci->next_statechange))
|
|
msleep(5);
|
|
ohci->next_statechange = jiffies;
|
|
|
|
ep93xx_stop_hc(&pdev->dev);
|
|
hcd->state = HC_STATE_SUSPENDED;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ohci_hcd_ep93xx_drv_resume(struct platform_device *pdev)
|
|
{
|
|
struct usb_hcd *hcd = platform_get_drvdata(pdev);
|
|
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
|
|
|
|
if (time_before(jiffies, ohci->next_statechange))
|
|
msleep(5);
|
|
ohci->next_statechange = jiffies;
|
|
|
|
ep93xx_start_hc(&pdev->dev);
|
|
|
|
ohci_finish_controller_resume(hcd);
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
|
|
static struct platform_driver ohci_hcd_ep93xx_driver = {
|
|
.probe = ohci_hcd_ep93xx_drv_probe,
|
|
.remove = ohci_hcd_ep93xx_drv_remove,
|
|
.shutdown = usb_hcd_platform_shutdown,
|
|
#ifdef CONFIG_PM
|
|
.suspend = ohci_hcd_ep93xx_drv_suspend,
|
|
.resume = ohci_hcd_ep93xx_drv_resume,
|
|
#endif
|
|
.driver = {
|
|
.name = "ep93xx-ohci",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
};
|
|
|
|
MODULE_ALIAS("platform:ep93xx-ohci");
|