2011-08-04 19:58:22 +00:00
|
|
|
/*
|
|
|
|
* EHCI HCD for Netlogic XLS processors.
|
|
|
|
*
|
|
|
|
* (C) Copyright 2011 Netlogic Microsystems Inc.
|
|
|
|
*
|
|
|
|
* Based on various ehci-*.c 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>
|
|
|
|
|
|
|
|
static int ehci_xls_setup(struct usb_hcd *hcd)
|
|
|
|
{
|
|
|
|
int retval;
|
|
|
|
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
|
|
|
|
|
|
|
|
ehci->caps = hcd->regs;
|
|
|
|
ehci->regs = hcd->regs +
|
2011-11-18 06:42:41 +00:00
|
|
|
HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
|
2011-08-04 19:58:22 +00:00
|
|
|
dbg_hcs_params(ehci, "reset");
|
|
|
|
dbg_hcc_params(ehci, "reset");
|
|
|
|
|
|
|
|
/* cache this readonly data; minimize chip reads */
|
|
|
|
ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
|
|
|
|
|
|
|
|
retval = ehci_halt(ehci);
|
|
|
|
if (retval)
|
|
|
|
return retval;
|
|
|
|
|
|
|
|
/* data structure init */
|
|
|
|
retval = ehci_init(hcd);
|
|
|
|
if (retval)
|
|
|
|
return retval;
|
|
|
|
|
|
|
|
ehci_reset(ehci);
|
|
|
|
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
int ehci_xls_probe_internal(const struct hc_driver *driver,
|
|
|
|
struct platform_device *pdev)
|
|
|
|
{
|
|
|
|
struct usb_hcd *hcd;
|
|
|
|
struct resource *res;
|
|
|
|
int retval, irq;
|
|
|
|
|
|
|
|
/* Get our IRQ from an earlier registered Platform Resource */
|
|
|
|
irq = platform_get_irq(pdev, 0);
|
|
|
|
if (irq < 0) {
|
|
|
|
dev_err(&pdev->dev, "Found HC with no IRQ. Check %s setup!\n",
|
|
|
|
dev_name(&pdev->dev));
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Get our Memory Handle */
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
|
|
if (!res) {
|
|
|
|
dev_err(&pdev->dev, "Error: MMIO Handle %s setup!\n",
|
|
|
|
dev_name(&pdev->dev));
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
|
|
|
|
if (!hcd) {
|
|
|
|
retval = -ENOMEM;
|
|
|
|
goto err1;
|
|
|
|
}
|
|
|
|
|
|
|
|
hcd->rsrc_start = res->start;
|
|
|
|
hcd->rsrc_len = res->end - res->start + 1;
|
|
|
|
|
|
|
|
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
|
|
|
|
driver->description)) {
|
|
|
|
dev_dbg(&pdev->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(&pdev->dev, "error mapping memory\n");
|
|
|
|
retval = -EFAULT;
|
|
|
|
goto err3;
|
|
|
|
}
|
|
|
|
|
|
|
|
retval = usb_add_hcd(hcd, irq, 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(&pdev->dev, "init %s fail, %d\n", dev_name(&pdev->dev),
|
|
|
|
retval);
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct hc_driver ehci_xls_hc_driver = {
|
|
|
|
.description = hcd_name,
|
|
|
|
.product_desc = "XLS EHCI Host Controller",
|
|
|
|
.hcd_priv_size = sizeof(struct ehci_hcd),
|
|
|
|
.irq = ehci_irq,
|
|
|
|
.flags = HCD_USB2 | HCD_MEMORY,
|
|
|
|
.reset = ehci_xls_setup,
|
|
|
|
.start = ehci_run,
|
|
|
|
.stop = ehci_stop,
|
|
|
|
.shutdown = ehci_shutdown,
|
|
|
|
|
|
|
|
.urb_enqueue = ehci_urb_enqueue,
|
|
|
|
.urb_dequeue = ehci_urb_dequeue,
|
|
|
|
.endpoint_disable = ehci_endpoint_disable,
|
|
|
|
.endpoint_reset = ehci_endpoint_reset,
|
|
|
|
|
|
|
|
.get_frame_number = ehci_get_frame,
|
|
|
|
|
|
|
|
.hub_status_data = ehci_hub_status_data,
|
|
|
|
.hub_control = ehci_hub_control,
|
|
|
|
.bus_suspend = ehci_bus_suspend,
|
|
|
|
.bus_resume = ehci_bus_resume,
|
|
|
|
.relinquish_port = ehci_relinquish_port,
|
|
|
|
.port_handed_over = ehci_port_handed_over,
|
|
|
|
|
|
|
|
.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
|
|
|
|
};
|
|
|
|
|
|
|
|
static int ehci_xls_probe(struct platform_device *pdev)
|
|
|
|
{
|
|
|
|
if (usb_disabled())
|
|
|
|
return -ENODEV;
|
|
|
|
|
|
|
|
return ehci_xls_probe_internal(&ehci_xls_hc_driver, pdev);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ehci_xls_remove(struct platform_device *pdev)
|
|
|
|
{
|
|
|
|
struct usb_hcd *hcd = platform_get_drvdata(pdev);
|
|
|
|
|
|
|
|
usb_remove_hcd(hcd);
|
|
|
|
iounmap(hcd->regs);
|
|
|
|
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
|
|
|
|
usb_put_hcd(hcd);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
MODULE_ALIAS("ehci-xls");
|
|
|
|
|
|
|
|
static struct platform_driver ehci_xls_driver = {
|
|
|
|
.probe = ehci_xls_probe,
|
|
|
|
.remove = ehci_xls_remove,
|
|
|
|
.shutdown = usb_hcd_platform_shutdown,
|
|
|
|
.driver = {
|
|
|
|
.name = "ehci-xls",
|
|
|
|
},
|
|
|
|
};
|