USB: Add nuvoton Ehci driver for w90p910 platform

Add ehci support for w90p910 platform.

Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Wan ZongShun 2009-06-13 09:14:28 +08:00 committed by Greg Kroah-Hartman
parent b95cd7ec3e
commit 586dfc8caf
4 changed files with 194 additions and 0 deletions

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@ -39,6 +39,7 @@ config USB_ARCH_HAS_OHCI
default y if ARCH_AT91
default y if ARCH_PNX4008 && I2C
default y if MFD_TC6393XB
default y if ARCH_W90X900
# PPC:
default y if STB03xxx
default y if PPC_MPC52xx
@ -58,6 +59,7 @@ config USB_ARCH_HAS_EHCI
default y if PPC_83xx
default y if SOC_AU1200
default y if ARCH_IXP4XX
default y if ARCH_W90X900
default PCI
# ARM SA1111 chips have a non-PCI based "OHCI-compatible" USB host interface.

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@ -113,6 +113,12 @@ config USB_EHCI_HCD_PPC_OF
Enables support for the USB controller present on the PowerPC
OpenFirmware platform bus.
config USB_W90X900_EHCI
bool "W90X900(W90P910) EHCI support"
depends on USB_EHCI_HCD && ARCH_W90X900
---help---
Enables support for the W90X900 USB controller
config USB_OXU210HP_HCD
tristate "OXU210HP HCD support"
depends on USB

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@ -1117,6 +1117,11 @@ MODULE_LICENSE ("GPL");
#define PLATFORM_DRIVER ixp4xx_ehci_driver
#endif
#ifdef CONFIG_USB_W90X900_EHCI
#include "ehci-w90x900.c"
#define PLATFORM_DRIVER ehci_hcd_w90x900_driver
#endif
#if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
!defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER)
#error "missing bus glue for ehci-hcd"

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@ -0,0 +1,181 @@
/*
* 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 = res->end - res->start + 1;
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_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,
/*
* 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,
};
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");