mirror of
https://github.com/torvalds/linux.git
synced 2024-12-29 14:21:47 +00:00
28f65c11f2
Several fixes as well where the +1 was missing. Done via coccinelle scripts like: @@ struct resource *ptr; @@ - ptr->end - ptr->start + 1 + resource_size(ptr) and some grep and typing. Mostly uncompiled, no cross-compilers. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
185 lines
4.0 KiB
C
185 lines
4.0 KiB
C
/*
|
|
* linux/driver/usb/host/ehci-w90x900.c
|
|
*
|
|
* Copyright (c) 2008 Nuvoton technology corporation.
|
|
*
|
|
* Wan ZongShun <mcuos.com@gmail.com>
|
|
*
|
|
* 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;version 2 of the License.
|
|
*
|
|
*/
|
|
|
|
#include <linux/platform_device.h>
|
|
|
|
/*ebable phy0 and phy1 for w90p910*/
|
|
#define ENPHY (0x01<<8)
|
|
#define PHY0_CTR (0xA4)
|
|
#define PHY1_CTR (0xA8)
|
|
|
|
static int __devinit usb_w90x900_probe(const struct hc_driver *driver,
|
|
struct platform_device *pdev)
|
|
{
|
|
struct usb_hcd *hcd;
|
|
struct ehci_hcd *ehci;
|
|
struct resource *res;
|
|
int retval = 0, irq;
|
|
unsigned long val;
|
|
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
if (!res) {
|
|
retval = -ENXIO;
|
|
goto err1;
|
|
}
|
|
|
|
hcd = usb_create_hcd(driver, &pdev->dev, "w90x900 EHCI");
|
|
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, hcd_name)) {
|
|
retval = -EBUSY;
|
|
goto err2;
|
|
}
|
|
|
|
hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
|
|
if (hcd->regs == NULL) {
|
|
retval = -EFAULT;
|
|
goto err3;
|
|
}
|
|
|
|
ehci = hcd_to_ehci(hcd);
|
|
ehci->caps = hcd->regs;
|
|
ehci->regs = hcd->regs +
|
|
HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
|
|
|
|
/* enable PHY 0,1,the regs only apply to w90p910
|
|
* 0xA4,0xA8 were offsets of PHY0 and PHY1 controller of
|
|
* w90p910 IC relative to ehci->regs.
|
|
*/
|
|
val = __raw_readl(ehci->regs+PHY0_CTR);
|
|
val |= ENPHY;
|
|
__raw_writel(val, ehci->regs+PHY0_CTR);
|
|
|
|
val = __raw_readl(ehci->regs+PHY1_CTR);
|
|
val |= ENPHY;
|
|
__raw_writel(val, ehci->regs+PHY1_CTR);
|
|
|
|
ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
|
|
ehci->sbrn = 0x20;
|
|
|
|
irq = platform_get_irq(pdev, 0);
|
|
if (irq < 0)
|
|
goto err4;
|
|
|
|
retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
|
|
if (retval != 0)
|
|
goto err4;
|
|
|
|
ehci_writel(ehci, 1, &ehci->regs->configured_flag);
|
|
|
|
return retval;
|
|
err4:
|
|
iounmap(hcd->regs);
|
|
err3:
|
|
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
|
|
err2:
|
|
usb_put_hcd(hcd);
|
|
err1:
|
|
return retval;
|
|
}
|
|
|
|
static
|
|
void usb_w90x900_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 const struct hc_driver ehci_w90x900_hc_driver = {
|
|
.description = hcd_name,
|
|
.product_desc = "Nuvoton w90x900 EHCI Host Controller",
|
|
.hcd_priv_size = sizeof(struct ehci_hcd),
|
|
|
|
/*
|
|
* generic hardware linkage
|
|
*/
|
|
.irq = ehci_irq,
|
|
.flags = HCD_USB2|HCD_MEMORY,
|
|
|
|
/*
|
|
* basic lifecycle operations
|
|
*/
|
|
.reset = ehci_init,
|
|
.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,
|
|
#ifdef CONFIG_PM
|
|
.bus_suspend = ehci_bus_suspend,
|
|
.bus_resume = ehci_bus_resume,
|
|
#endif
|
|
.relinquish_port = ehci_relinquish_port,
|
|
.port_handed_over = ehci_port_handed_over,
|
|
|
|
.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
|
|
};
|
|
|
|
static int __devinit ehci_w90x900_probe(struct platform_device *pdev)
|
|
{
|
|
if (usb_disabled())
|
|
return -ENODEV;
|
|
|
|
return usb_w90x900_probe(&ehci_w90x900_hc_driver, pdev);
|
|
}
|
|
|
|
static int __devexit ehci_w90x900_remove(struct platform_device *pdev)
|
|
{
|
|
struct usb_hcd *hcd = platform_get_drvdata(pdev);
|
|
|
|
usb_w90x900_remove(hcd, pdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver ehci_hcd_w90x900_driver = {
|
|
.probe = ehci_w90x900_probe,
|
|
.remove = __devexit_p(ehci_w90x900_remove),
|
|
.driver = {
|
|
.name = "w90x900-ehci",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
};
|
|
|
|
MODULE_AUTHOR("Wan ZongShun <mcuos.com@gmail.com>");
|
|
MODULE_DESCRIPTION("w90p910 usb ehci driver!");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:w90p910-ehci");
|