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@@ -0,0 +1,157 @@
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+/*
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+ * Generic UHCI HCD (Host Controller Driver) for Platform Devices
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+ *
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+ * Copyright (c) 2011 Tony Prisk <linux@prisktech.co.nz>
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+ *
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+ * This file is based on uhci-grlib.c
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+ * (C) Copyright 2004-2007 Alan Stern, stern@rowland.harvard.edu
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+ */
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+
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+#include <linux/of.h>
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+#include <linux/platform_device.h>
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+
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+static int uhci_platform_init(struct usb_hcd *hcd)
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+{
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+ struct uhci_hcd *uhci = hcd_to_uhci(hcd);
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+
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+ uhci->rh_numports = uhci_count_ports(hcd);
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+
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+ /* Set up pointers to to generic functions */
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+ uhci->reset_hc = uhci_generic_reset_hc;
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+ uhci->check_and_reset_hc = uhci_generic_check_and_reset_hc;
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+
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+ /* No special actions need to be taken for the functions below */
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+ uhci->configure_hc = NULL;
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+ uhci->resume_detect_interrupts_are_broken = NULL;
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+ uhci->global_suspend_mode_is_broken = NULL;
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+
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+ /* Reset if the controller isn't already safely quiescent. */
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+ check_and_reset_hc(uhci);
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+ return 0;
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+}
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+
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+static const struct hc_driver uhci_platform_hc_driver = {
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+ .description = hcd_name,
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+ .product_desc = "Generic UHCI Host Controller",
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+ .hcd_priv_size = sizeof(struct uhci_hcd),
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+
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+ /* Generic hardware linkage */
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+ .irq = uhci_irq,
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+ .flags = HCD_MEMORY | HCD_USB11,
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+
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+ /* Basic lifecycle operations */
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+ .reset = uhci_platform_init,
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+ .start = uhci_start,
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+#ifdef CONFIG_PM
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+ .pci_suspend = NULL,
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+ .pci_resume = NULL,
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+ .bus_suspend = uhci_rh_suspend,
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+ .bus_resume = uhci_rh_resume,
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+#endif
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+ .stop = uhci_stop,
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+
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+ .urb_enqueue = uhci_urb_enqueue,
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+ .urb_dequeue = uhci_urb_dequeue,
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+
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+ .endpoint_disable = uhci_hcd_endpoint_disable,
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+ .get_frame_number = uhci_hcd_get_frame_number,
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+
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+ .hub_status_data = uhci_hub_status_data,
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+ .hub_control = uhci_hub_control,
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+};
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+
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+
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+static int __devinit uhci_hcd_platform_probe(struct platform_device *pdev)
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+{
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+ struct usb_hcd *hcd;
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+ struct uhci_hcd *uhci;
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+ struct resource *res;
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+ int ret;
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+
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+ if (usb_disabled())
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+ return -ENODEV;
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+
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+ hcd = usb_create_hcd(&uhci_platform_hc_driver, &pdev->dev,
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+ pdev->name);
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+ if (!hcd)
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+ return -ENOMEM;
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+
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+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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+ hcd->rsrc_start = res->start;
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+ hcd->rsrc_len = resource_size(res);
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+
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+ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
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+ pr_err("%s: request_mem_region failed\n", __func__);
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+ ret = -EBUSY;
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+ goto err_rmr;
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+ }
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+
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+ hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
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+ if (!hcd->regs) {
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+ pr_err("%s: ioremap failed\n", __func__);
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+ ret = -ENOMEM;
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+ goto err_irq;
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+ }
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+ uhci = hcd_to_uhci(hcd);
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+
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+ uhci->regs = hcd->regs;
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+
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+ ret = usb_add_hcd(hcd, pdev->resource[1].start, IRQF_DISABLED |
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+ IRQF_SHARED);
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+ if (ret)
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+ goto err_uhci;
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+
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+ return 0;
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+
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+err_uhci:
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+ iounmap(hcd->regs);
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+err_irq:
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+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
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+err_rmr:
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+ usb_put_hcd(hcd);
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+
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+ return ret;
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+}
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+
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+static int uhci_hcd_platform_remove(struct platform_device *pdev)
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+{
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+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
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+
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+ usb_remove_hcd(hcd);
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+ iounmap(hcd->regs);
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+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
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+ usb_put_hcd(hcd);
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+ platform_set_drvdata(pdev, NULL);
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+
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+ return 0;
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+}
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+
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+/* Make sure the controller is quiescent and that we're not using it
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+ * any more. This is mainly for the benefit of programs which, like kexec,
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+ * expect the hardware to be idle: not doing DMA or generating IRQs.
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+ *
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+ * This routine may be called in a damaged or failing kernel. Hence we
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+ * do not acquire the spinlock before shutting down the controller.
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+ */
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+static void uhci_hcd_platform_shutdown(struct platform_device *op)
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+{
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+ struct usb_hcd *hcd = dev_get_drvdata(&op->dev);
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+
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+ uhci_hc_died(hcd_to_uhci(hcd));
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+}
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+
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+static const struct of_device_id platform_uhci_ids[] = {
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+ { .compatible = "platform-uhci", },
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+ {}
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+};
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+
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+static struct platform_driver uhci_platform_driver = {
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+ .probe = uhci_hcd_platform_probe,
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+ .remove = uhci_hcd_platform_remove,
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+ .shutdown = uhci_hcd_platform_shutdown,
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+ .driver = {
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+ .name = "platform-uhci",
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+ .owner = THIS_MODULE,
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+ .of_match_table = of_match_ptr(platform_uhci_ids),
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+ },
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+};
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Tony Prisk