Dear sirs,
Add the ehci driver patch for w90p910 arm platform.
patch text:
Add w90p910 Usb host ehci driver.
Signed-off-by: Wan ZongShun <mcuos.com@xxxxxxxxx>
diff -Npur linux-2.6.29/drivers/usb/host/ehci-hcd.c linux-2.6.30/drivers/usb/host/ehci-hcd.c
--- linux-2.6.29/drivers/usb/host/ehci-hcd.c 2009-05-02 21:18:24.000000000 +0800
+++ linux-2.6.30/drivers/usb/host/ehci-hcd.c 2009-05-02 23:38:10.000000000 +0800
@@ -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 -Npur linux-2.6.29/drivers/usb/host/ehci-w90x900.c linux-2.6.30/drivers/usb/host/ehci-w90x900.c
--- linux-2.6.29/drivers/usb/host/ehci-w90x900.c 1970-01-01 08:00:00.000000000 +0800
+++ linux-2.6.30/drivers/usb/host/ehci-w90x900.c 2009-05-02 21:01:29.000000000 +0800
@@ -0,0 +1,173 @@
+/*
+ * 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>
+#include <mach/regs-clock.h>
+#include <mach/regs-usb.h>
+
+int usb_w90x900_probe(const struct hc_driver *driver,
+ struct platform_device *pdev)
+{
+ struct usb_hcd *hcd;
+ struct ehci_hcd *ehci;
+ int retval;
+
+ /* enable USB Host clock */
+ __raw_writel(__raw_readl(REG_CLKEN) | 0x200, REG_CLKEN);
+
+ if (pdev->resource[1].flags != IORESOURCE_IRQ) {
+ pr_debug("resource[1] is not IORESOURCE_IRQ");
+ retval = -ENOMEM;
+ }
+
+ hcd = usb_create_hcd(driver, &pdev->dev, "w90x900 EHCI");
+ if (!hcd) {
+ retval = -ENOMEM;
+ goto err1;
+ }
+
+
+ hcd->rsrc_start = pdev->resource[0].start;
+ hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
+
+ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
+ pr_debug("request_mem_region failed");
+ retval = -EBUSY;
+ goto err2;
+ }
+
+ hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+ if (hcd->regs == NULL) {
+ pr_debug("error mapping memory\n");
+ 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));
+
+ __raw_writel(OCALow, REG_OpModEn);
+
+ /* enable PHY 0 */
+ __raw_writel(0x160, REG_USBPCR0);
+
+ /* enable PHY 1 */
+ __raw_writel(0x520, REG_USBPCR1);
+
+ ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
+ ehci->sbrn = 0x20;
+
+ retval = usb_add_hcd(hcd, pdev->resource[1].start, 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;
+}
+
+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 ehci_w90x900_probe(struct platform_device *pdev)
+{
+ if (usb_disabled())
+ return -ENODEV;
+
+ return usb_w90x900_probe(&ehci_w90x900_hc_driver, pdev);
+}
+
+static int ehci_w90x900_remove(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
+
+ usb_w90x900_remove(hcd, pdev);
+
+ return 0;
+}
+
+MODULE_ALIAS("platform:w90x900-ehci");
+
+static struct platform_driver ehci_hcd_w90x900_driver = {
+
+ .probe = ehci_w90x900_probe,
+ .remove = ehci_w90x900_remove,
+ .driver = {
+ .name = "w90x900-ehci",
+ .owner = THIS_MODULE,
+ },
+};
--
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