187 lines
4.2 KiB
C
187 lines
4.2 KiB
C
/*
|
|
* MIPS CI13320A EHCI Host Controller driver
|
|
* Based on "ehci-au1xxx.c" by K.Boge <karsten.boge@amd.com>
|
|
*
|
|
* Copyright (C) 2012 MIPS Technologies, Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
* option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
|
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software Foundation,
|
|
* Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#include <linux/err.h>
|
|
#include <linux/platform_device.h>
|
|
|
|
static int ehci_sead3_setup(struct usb_hcd *hcd)
|
|
{
|
|
int ret;
|
|
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
|
|
|
|
ehci->caps = hcd->regs + 0x100;
|
|
|
|
#ifdef __BIG_ENDIAN
|
|
ehci->big_endian_mmio = 1;
|
|
ehci->big_endian_desc = 1;
|
|
#endif
|
|
|
|
ret = ehci_setup(hcd);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ehci->need_io_watchdog = 0;
|
|
|
|
/* Set burst length to 16 words. */
|
|
ehci_writel(ehci, 0x1010, &ehci->regs->reserved1[1]);
|
|
|
|
return ret;
|
|
}
|
|
|
|
const struct hc_driver ehci_sead3_hc_driver = {
|
|
.description = hcd_name,
|
|
.product_desc = "SEAD-3 EHCI",
|
|
.hcd_priv_size = sizeof(struct ehci_hcd),
|
|
|
|
/*
|
|
* generic hardware linkage
|
|
*/
|
|
.irq = ehci_irq,
|
|
.flags = HCD_MEMORY | HCD_USB2 | HCD_BH,
|
|
|
|
/*
|
|
* basic lifecycle operations
|
|
*
|
|
*/
|
|
.reset = ehci_sead3_setup,
|
|
.start = ehci_run,
|
|
.stop = ehci_stop,
|
|
.shutdown = ehci_shutdown,
|
|
|
|
/*
|
|
* managing i/o requests and associated device resources
|
|
*/
|
|
.urb_enqueue = ehci_urb_enqueue,
|
|
.urb_dequeue = ehci_urb_dequeue,
|
|
.endpoint_disable = ehci_endpoint_disable,
|
|
.endpoint_reset = ehci_endpoint_reset,
|
|
|
|
/*
|
|
* scheduling support
|
|
*/
|
|
.get_frame_number = ehci_get_frame,
|
|
|
|
/*
|
|
* root hub support
|
|
*/
|
|
.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_hcd_sead3_drv_probe(struct platform_device *pdev)
|
|
{
|
|
struct usb_hcd *hcd;
|
|
struct resource *res;
|
|
int ret;
|
|
|
|
if (usb_disabled())
|
|
return -ENODEV;
|
|
|
|
if (pdev->resource[1].flags != IORESOURCE_IRQ) {
|
|
pr_debug("resource[1] is not IORESOURCE_IRQ");
|
|
return -ENOMEM;
|
|
}
|
|
hcd = usb_create_hcd(&ehci_sead3_hc_driver, &pdev->dev, "SEAD-3");
|
|
if (!hcd)
|
|
return -ENOMEM;
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
hcd->rsrc_start = res->start;
|
|
hcd->rsrc_len = resource_size(res);
|
|
|
|
hcd->regs = devm_ioremap_resource(&pdev->dev, res);
|
|
if (IS_ERR(hcd->regs)) {
|
|
ret = PTR_ERR(hcd->regs);
|
|
goto err1;
|
|
}
|
|
|
|
/* Root hub has integrated TT. */
|
|
hcd->has_tt = 1;
|
|
|
|
ret = usb_add_hcd(hcd, pdev->resource[1].start,
|
|
IRQF_SHARED);
|
|
if (ret == 0) {
|
|
platform_set_drvdata(pdev, hcd);
|
|
device_wakeup_enable(hcd->self.controller);
|
|
return ret;
|
|
}
|
|
|
|
err1:
|
|
usb_put_hcd(hcd);
|
|
return ret;
|
|
}
|
|
|
|
static int ehci_hcd_sead3_drv_remove(struct platform_device *pdev)
|
|
{
|
|
struct usb_hcd *hcd = platform_get_drvdata(pdev);
|
|
|
|
usb_remove_hcd(hcd);
|
|
usb_put_hcd(hcd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int ehci_hcd_sead3_drv_suspend(struct device *dev)
|
|
{
|
|
struct usb_hcd *hcd = dev_get_drvdata(dev);
|
|
bool do_wakeup = device_may_wakeup(dev);
|
|
|
|
return ehci_suspend(hcd, do_wakeup);
|
|
}
|
|
|
|
static int ehci_hcd_sead3_drv_resume(struct device *dev)
|
|
{
|
|
struct usb_hcd *hcd = dev_get_drvdata(dev);
|
|
|
|
ehci_resume(hcd, false);
|
|
return 0;
|
|
}
|
|
|
|
static const struct dev_pm_ops sead3_ehci_pmops = {
|
|
.suspend = ehci_hcd_sead3_drv_suspend,
|
|
.resume = ehci_hcd_sead3_drv_resume,
|
|
};
|
|
|
|
#define SEAD3_EHCI_PMOPS (&sead3_ehci_pmops)
|
|
|
|
#else
|
|
#define SEAD3_EHCI_PMOPS NULL
|
|
#endif
|
|
|
|
static struct platform_driver ehci_hcd_sead3_driver = {
|
|
.probe = ehci_hcd_sead3_drv_probe,
|
|
.remove = ehci_hcd_sead3_drv_remove,
|
|
.shutdown = usb_hcd_platform_shutdown,
|
|
.driver = {
|
|
.name = "sead3-ehci",
|
|
.owner = THIS_MODULE,
|
|
.pm = SEAD3_EHCI_PMOPS,
|
|
}
|
|
};
|
|
|
|
MODULE_ALIAS("platform:sead3-ehci");
|