Dear David,
What about this patch?
Wan ZongShun:
> Dear sirs,
>
> Thanks Eric for your help.
> According to Eric's advice,I fix up my patch.
>
> Would you please give me some advice?
>
> thanks!
>
> Add ehci support for w90p910 platform.
>
> Signed-off-by: Wan ZongShun <mcuos.com@xxxxxxxxx>
> ---
> drivers/usb/Kconfig | 2 +
> drivers/usb/host/Kconfig | 6 ++
> drivers/usb/host/ehci-hcd.c | 5 +
> drivers/usb/host/ehci-w90x900.c | 181 +++++++++++++++++++++++++++++++++++++++
> 4 files changed, 194 insertions(+), 0 deletions(-)
> create mode 100644 drivers/usb/host/ehci-w90x900.c
>
> diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig
> index c6c816b..6696abe 100644
> --- a/drivers/usb/Kconfig
> +++ b/drivers/usb/Kconfig
> @@ -38,6 +38,7 @@ 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
> @@ -57,6 +58,7 @@ 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.
> diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
> index 845479f..dfbe586 100644
> --- a/drivers/usb/host/Kconfig
> +++ b/drivers/usb/host/Kconfig
> @@ -93,6 +93,12 @@ 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
> diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
> index c637207..bdb0372 100644
> --- a/drivers/usb/host/ehci-hcd.c
> +++ b/drivers/usb/host/ehci-hcd.c
> @@ -1072,6 +1072,11 @@ 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"
> diff --git a/drivers/usb/host/ehci-w90x900.c b/drivers/usb/host/ehci-w90x900.c
> new file mode 100644
> index 0000000..cfa21ea
> --- /dev/null
> +++ b/drivers/usb/host/ehci-w90x900.c
> @@ -0,0 +1,181 @@
> +/*
> + * linux/driver/usb/host/ehci-w90x900.c
> + *
> + * Copyright (c) 2008 Nuvoton technology corporation.
> + *
> + * Wan ZongShun <mcuos.com@xxxxxxxxx>
> + *
> + * 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@xxxxxxxxx>");
> +MODULE_DESCRIPTION("w90p910 usb ehci driver!");
> +MODULE_LICENSE("GPL");
> +MODULE_ALIAS("platform:w90p910-ehci");
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