152 lines
3.4 KiB
C
152 lines
3.4 KiB
C
|
/*
|
||
|
|
* OHCI HCD for Netlogic XLS processors.
|
||
|
|
*
|
||
|
|
* (C) Copyright 2011 Netlogic Microsystems Inc.
|
||
|
|
*
|
||
|
|
* Based on ohci-au1xxx.c, and other Linux OHCI drivers.
|
||
|
|
*
|
||
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
||
|
|
* License. See the file COPYING in the main directory of this archive for
|
||
|
|
* more details.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/platform_device.h>
|
||
|
|
#include <linux/signal.h>
|
||
|
|
|
||
|
|
static int ohci_xls_probe_internal(const struct hc_driver *driver,
|
||
|
|
struct platform_device *dev)
|
||
|
|
{
|
||
|
|
struct resource *res;
|
||
|
|
struct usb_hcd *hcd;
|
||
|
|
int retval, irq;
|
||
|
|
|
||
|
|
/* Get our IRQ from an earlier registered Platform Resource */
|
||
|
|
irq = platform_get_irq(dev, 0);
|
||
|
|
if (irq < 0) {
|
||
|
|
dev_err(&dev->dev, "Found HC with no IRQ\n");
|
||
|
|
return -ENODEV;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Get our Memory Handle */
|
||
|
|
res = platform_get_resource(dev, IORESOURCE_MEM, 0);
|
||
|
|
if (!res) {
|
||
|
|
dev_err(&dev->dev, "MMIO Handle incorrect!\n");
|
||
|
|
return -ENODEV;
|
||
|
|
}
|
||
|
|
|
||
|
|
hcd = usb_create_hcd(driver, &dev->dev, "XLS");
|
||
|
|
if (!hcd) {
|
||
|
|
retval = -ENOMEM;
|
||
|
|
goto err1;
|
||
|
|
}
|
||
|
|
hcd->rsrc_start = res->start;
|
||
|
|
hcd->rsrc_len = resource_size(res);
|
||
|
|
|
||
|
|
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
|
||
|
|
driver->description)) {
|
||
|
|
dev_dbg(&dev->dev, "Controller already in use\n");
|
||
|
|
retval = -EBUSY;
|
||
|
|
goto err2;
|
||
|
|
}
|
||
|
|
|
||
|
|
hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
|
||
|
|
if (hcd->regs == NULL) {
|
||
|
|
dev_dbg(&dev->dev, "error mapping memory\n");
|
||
|
|
retval = -EFAULT;
|
||
|
|
goto err3;
|
||
|
|
}
|
||
|
|
|
||
|
|
retval = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
|
||
|
|
if (retval != 0)
|
||
|
|
goto err4;
|
||
|
|
return retval;
|
||
|
|
|
||
|
|
err4:
|
||
|
|
iounmap(hcd->regs);
|
||
|
|
err3:
|
||
|
|
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
|
||
|
|
err2:
|
||
|
|
usb_put_hcd(hcd);
|
||
|
|
err1:
|
||
|
|
dev_err(&dev->dev, "init fail, %d\n", retval);
|
||
|
|
return retval;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int ohci_xls_reset(struct usb_hcd *hcd)
|
||
|
|
{
|
||
|
|
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
|
||
|
|
|
||
|
|
ohci_hcd_init(ohci);
|
||
|
|
return ohci_init(ohci);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int __devinit ohci_xls_start(struct usb_hcd *hcd)
|
||
|
|
{
|
||
|
|
struct ohci_hcd *ohci;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
ohci = hcd_to_ohci(hcd);
|
||
|
|
ret = ohci_run(ohci);
|
||
|
|
if (ret < 0) {
|
||
|
|
err("can't start %s", hcd->self.bus_name);
|
||
|
|
ohci_stop(hcd);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct hc_driver ohci_xls_hc_driver = {
|
||
|
|
.description = hcd_name,
|
||
|
|
.product_desc = "XLS OHCI Host Controller",
|
||
|
|
.hcd_priv_size = sizeof(struct ohci_hcd),
|
||
|
|
.irq = ohci_irq,
|
||
|
|
.flags = HCD_MEMORY | HCD_USB11,
|
||
|
|
.reset = ohci_xls_reset,
|
||
|
|
.start = ohci_xls_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,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int ohci_xls_probe(struct platform_device *dev)
|
||
|
|
{
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
pr_debug("In ohci_xls_probe");
|
||
|
|
if (usb_disabled())
|
||
|
|
return -ENODEV;
|
||
|
|
ret = ohci_xls_probe_internal(&ohci_xls_hc_driver, dev);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int ohci_xls_remove(struct platform_device *dev)
|
||
|
|
{
|
||
|
|
struct usb_hcd *hcd = platform_get_drvdata(dev);
|
||
|
|
|
||
|
|
usb_remove_hcd(hcd);
|
||
|
|
iounmap(hcd->regs);
|
||
|
|
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
|
||
|
|
usb_put_hcd(hcd);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct platform_driver ohci_xls_driver = {
|
||
|
|
.probe = ohci_xls_probe,
|
||
|
|
.remove = ohci_xls_remove,
|
||
|
|
.shutdown = usb_hcd_platform_shutdown,
|
||
|
|
.driver = {
|
||
|
|
.name = "ohci-xls-0",
|
||
|
|
.owner = THIS_MODULE,
|
||
|
|
},
|
||
|
|
};
|