--- /dev/null
+/*
+ * OHCI HCD (Host Controller Driver) for USB.
+ *
+ * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
+ * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
+ * (C) Copyright 2002 Hewlett-Packard Company
+ * (C) Copyright 2003-2005 MontaVista Software Inc.
+ *
+ * Bus Glue for PPC On-Chip OHCI driver
+ * Tested on Freescale MPC5200 and IBM STB04xxx
+ *
+ * Modified by Dale Farnsworth <dale@farnsworth.org> from ohci-sa1111.c
+ *
+ * This file is licenced under the GPL.
+ */
+
+#include <asm/usb.h>
+
+/* configure so an HC device and id are always provided */
+/* always called with process context; sleeping is OK */
+
+/**
+ * usb_hcd_ppc_soc_probe - initialize On-Chip HCDs
+ * Context: !in_interrupt()
+ *
+ * Allocates basic resources for this USB host controller, and
+ * then invokes the start() method for the HCD associated with it
+ * through the hotplug entry's driver_data.
+ *
+ * Store this function in the HCD's struct pci_driver as probe().
+ */
+static int usb_hcd_ppc_soc_probe(const struct hc_driver *driver,
+ struct platform_device *pdev)
+{
+ int retval;
+ struct usb_hcd *hcd;
+ struct ohci_hcd *ohci;
+ struct resource *res;
+ int irq;
+ struct usb_hcd_platform_data *pd = pdev->dev.platform_data;
+
+ pr_debug("initializing PPC-SOC USB Controller\n");
+
+ res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!res) {
+ pr_debug(__FILE__ ": no irq\n");
+ return -ENODEV;
+ }
+ irq = res->start;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ pr_debug(__FILE__ ": no reg addr\n");
+ return -ENODEV;
+ }
+
+ hcd = usb_create_hcd(driver, &pdev->dev, "PPC-SOC USB");
+ if (!hcd)
+ return -ENOMEM;
+ 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)) {
+ pr_debug(__FILE__ ": request_mem_region failed\n");
+ retval = -EBUSY;
+ goto err1;
+ }
+
+ hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+ if (!hcd->regs) {
+ pr_debug(__FILE__ ": ioremap failed\n");
+ retval = -ENOMEM;
+ goto err2;
+ }
+
+ if (pd->start && (retval = pd->start(pdev)))
+ goto err3;
+
+ ohci = hcd_to_ohci(hcd);
+ ohci->flags |= OHCI_BIG_ENDIAN;
+ ohci_hcd_init(ohci);
+
+ retval = usb_add_hcd(hcd, irq, SA_INTERRUPT);
+ if (retval == 0)
+ return retval;
+
+ pr_debug("Removing PPC-SOC USB Controller\n");
+ if (pd && pd->stop)
+ pd->stop(pdev);
+ err3:
+ iounmap(hcd->regs);
+ err2:
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+ err1:
+ usb_put_hcd(hcd);
+ return retval;
+}
+
+
+/* may be called without controller electrically present */
+/* may be called with controller, bus, and devices active */
+
+/**
+ * usb_hcd_ppc_soc_remove - shutdown processing for On-Chip HCDs
+ * @pdev: USB Host Controller being removed
+ * Context: !in_interrupt()
+ *
+ * Reverses the effect of usb_hcd_ppc_soc_probe(), first invoking
+ * the HCD's stop() method. It is always called from a thread
+ * context, normally "rmmod", "apmd", or something similar.
+ *
+ */
+static void usb_hcd_ppc_soc_remove(struct usb_hcd *hcd,
+ struct platform_device *pdev)
+{
+ struct usb_hcd_platform_data *pd = pdev->dev.platform_data;
+
+ usb_remove_hcd(hcd);
+
+ pr_debug("stopping PPC-SOC USB Controller\n");
+ if (pd && pd->stop)
+ pd->stop(pdev);
+
+ iounmap(hcd->regs);
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+ usb_hcd_put(hcd);
+}
+
+static int __devinit
+ohci_ppc_soc_start(struct usb_hcd *hcd)
+{
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ int ret;
+
+ if ((ret = ohci_init(ohci)) < 0)
+ return ret;
+
+ if ((ret = ohci_run(ohci)) < 0) {
+ err("can't start %s", ohci_to_hcd(ohci)->self.bus_name);
+ ohci_stop(hcd);
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct hc_driver ohci_ppc_soc_hc_driver = {
+ .description = hcd_name,
+ .hcd_priv_size = sizeof(struct ohci_hcd),
+
+ /*
+ * generic hardware linkage
+ */
+ .irq = ohci_irq,
+ .flags = HCD_USB11 | HCD_MEMORY,
+
+ /*
+ * basic lifecycle operations
+ */
+ .start = ohci_ppc_soc_start,
+ .stop = ohci_stop,
+
+ /*
+ * managing i/o requests and associated device resources
+ */
+ .urb_enqueue = ohci_urb_enqueue,
+ .urb_dequeue = ohci_urb_dequeue,
+ .endpoint_disable = ohci_endpoint_disable,
+
+ /*
+ * scheduling support
+ */
+ .get_frame_number = ohci_get_frame,
+
+ /*
+ * root hub support
+ */
+ .hub_status_data = ohci_hub_status_data,
+ .hub_control = ohci_hub_control,
+#ifdef CONFIG_USB_SUSPEND
+ .hub_suspend = ohci_hub_suspend,
+ .hub_resume = ohci_hub_resume,
+#endif
+ .start_port_reset = ohci_start_port_reset,
+};
+
+static int ohci_hcd_ppc_soc_drv_probe(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ int ret;
+
+ if (usb_disabled())
+ return -ENODEV;
+
+ ret = usb_hcd_ppc_soc_probe(&ohci_ppc_soc_hc_driver, pdev);
+ return ret;
+}
+
+static int ohci_hcd_ppc_soc_drv_remove(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+
+ usb_hcd_ppc_soc_remove(hcd, pdev);
+ return 0;
+}
+
+static struct device_driver ohci_hcd_ppc_soc_driver = {
+ .name = "ppc-soc-ohci",
+ .bus = &platform_bus_type,
+ .probe = ohci_hcd_ppc_soc_drv_probe,
+ .remove = ohci_hcd_ppc_soc_drv_remove,
+#if defined(CONFIG_USB_SUSPEND) || defined(CONFIG_PM)
+ /*.suspend = ohci_hcd_ppc_soc_drv_suspend,*/
+ /*.resume = ohci_hcd_ppc_soc_drv_resume,*/
+#endif
+};
+
+static int __init ohci_hcd_ppc_soc_init(void)
+{
+ pr_debug(DRIVER_INFO " (PPC SOC)\n");
+ pr_debug("block sizes: ed %d td %d\n", sizeof(struct ed),
+ sizeof(struct td));
+
+ return driver_register(&ohci_hcd_ppc_soc_driver);
+}
+
+static void __exit ohci_hcd_ppc_soc_cleanup(void)
+{
+ driver_unregister(&ohci_hcd_ppc_soc_driver);
+}
+
+module_init(ohci_hcd_ppc_soc_init);
+module_exit(ohci_hcd_ppc_soc_cleanup);
git://git.onelab.eu / linux-2.6.git / blobdiff