mirror of
git://git.openwrt.org/openwrt/openwrt.git
synced 2025-10-30 21:44:27 -04:00
166 lines
3.6 KiB
C
166 lines
3.6 KiB
C
/*
|
|
* OHCI HCD (Host Controller Driver) for USB.
|
|
*
|
|
* Bus Glue for Atheros AR71xx built-in OHCI controller.
|
|
*
|
|
* Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
|
|
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
|
|
*
|
|
* Parts of this file are based on Atheros' 2.6.15 BSP
|
|
* Copyright (C) 2007 Atheros Communications, Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 as published
|
|
* by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/platform_device.h>
|
|
#include <linux/delay.h>
|
|
|
|
extern int usb_disabled(void);
|
|
|
|
static int usb_hcd_ar71xx_probe(const struct hc_driver *driver,
|
|
struct platform_device *pdev)
|
|
{
|
|
struct usb_hcd *hcd;
|
|
struct resource *res;
|
|
int irq;
|
|
int ret;
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
|
|
if (!res) {
|
|
dev_dbg(&pdev->dev, "no IRQ specified for %s\n",
|
|
dev_name(&pdev->dev));
|
|
return -ENODEV;
|
|
}
|
|
irq = res->start;
|
|
|
|
hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
|
|
if (!hcd)
|
|
return -ENOMEM;
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
if (!res) {
|
|
dev_dbg(&pdev->dev, "no base address specified for %s\n",
|
|
dev_name(&pdev->dev));
|
|
ret = -ENODEV;
|
|
goto err_put_hcd;
|
|
}
|
|
hcd->rsrc_start = res->start;
|
|
hcd->rsrc_len = res->end - res->start + 1;
|
|
|
|
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
|
|
dev_dbg(&pdev->dev, "controller already in use\n");
|
|
ret = -EBUSY;
|
|
goto err_put_hcd;
|
|
}
|
|
|
|
hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
|
|
if (!hcd->regs) {
|
|
dev_dbg(&pdev->dev, "error mapping memory\n");
|
|
ret = -EFAULT;
|
|
goto err_release_region;
|
|
}
|
|
|
|
ohci_hcd_init(hcd_to_ohci(hcd));
|
|
|
|
ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
|
|
if (ret)
|
|
goto err_stop_hcd;
|
|
|
|
return 0;
|
|
|
|
err_stop_hcd:
|
|
iounmap(hcd->regs);
|
|
err_release_region:
|
|
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
|
|
err_put_hcd:
|
|
usb_put_hcd(hcd);
|
|
return ret;
|
|
}
|
|
|
|
void usb_hcd_ar71xx_remove(struct usb_hcd *hcd, struct platform_device *pdev)
|
|
{
|
|
usb_remove_hcd(hcd);
|
|
iounmap(hcd->regs);
|
|
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
|
|
usb_put_hcd(hcd);
|
|
}
|
|
|
|
static int __devinit ohci_ar71xx_start(struct usb_hcd *hcd)
|
|
{
|
|
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
|
|
int ret;
|
|
|
|
ret = ohci_init(ohci);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = ohci_run(ohci);
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
return 0;
|
|
|
|
err:
|
|
ohci_stop(hcd);
|
|
return ret;
|
|
}
|
|
|
|
static const struct hc_driver ohci_ar71xx_hc_driver = {
|
|
.description = hcd_name,
|
|
.product_desc = "Atheros AR71xx built-in OHCI controller",
|
|
.hcd_priv_size = sizeof(struct ohci_hcd),
|
|
|
|
.irq = ohci_irq,
|
|
.flags = HCD_USB11 | HCD_MEMORY,
|
|
|
|
.start = ohci_ar71xx_start,
|
|
.stop = ohci_stop,
|
|
.shutdown = ohci_shutdown,
|
|
|
|
.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_hub_status_data,
|
|
.hub_control = ohci_hub_control,
|
|
.start_port_reset = ohci_start_port_reset,
|
|
};
|
|
|
|
static int ohci_hcd_ar71xx_drv_probe(struct platform_device *pdev)
|
|
{
|
|
if (usb_disabled())
|
|
return -ENODEV;
|
|
|
|
return usb_hcd_ar71xx_probe(&ohci_ar71xx_hc_driver, pdev);
|
|
}
|
|
|
|
static int ohci_hcd_ar71xx_drv_remove(struct platform_device *pdev)
|
|
{
|
|
struct usb_hcd *hcd = platform_get_drvdata(pdev);
|
|
|
|
usb_hcd_ar71xx_remove(hcd, pdev);
|
|
return 0;
|
|
}
|
|
|
|
MODULE_ALIAS("platform:ar71xx-ohci");
|
|
|
|
static struct platform_driver ohci_hcd_ar71xx_driver = {
|
|
.probe = ohci_hcd_ar71xx_drv_probe,
|
|
.remove = ohci_hcd_ar71xx_drv_remove,
|
|
.shutdown = usb_hcd_platform_shutdown,
|
|
.driver = {
|
|
.name = "ar71xx-ohci",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
};
|