| /* |
| * 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 <linux/platform_device.h> |
| #include <linux/signal.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. |
| * |
| * 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; |
| |
| 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; |
| } |
| |
| ohci = hcd_to_ohci(hcd); |
| ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC; |
| ohci_hcd_init(ohci); |
| |
| retval = usb_add_hcd(hcd, irq, IRQF_DISABLED); |
| if (retval == 0) |
| return retval; |
| |
| pr_debug("Removing PPC-SOC USB Controller\n"); |
| |
| 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(). |
| * 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) |
| { |
| usb_remove_hcd(hcd); |
| |
| pr_debug("stopping PPC-SOC USB Controller\n"); |
| |
| iounmap(hcd->regs); |
| release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
| usb_put_hcd(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, |
| .shutdown = ohci_shutdown, |
| |
| /* |
| * 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, |
| .hub_irq_enable = ohci_rhsc_enable, |
| #ifdef CONFIG_PM |
| .bus_suspend = ohci_bus_suspend, |
| .bus_resume = ohci_bus_resume, |
| #endif |
| .start_port_reset = ohci_start_port_reset, |
| }; |
| |
| static int ohci_hcd_ppc_soc_drv_probe(struct platform_device *pdev) |
| { |
| 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 platform_device *pdev) |
| { |
| struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| |
| usb_hcd_ppc_soc_remove(hcd, pdev); |
| return 0; |
| } |
| |
| static struct platform_driver ohci_hcd_ppc_soc_driver = { |
| .probe = ohci_hcd_ppc_soc_drv_probe, |
| .remove = ohci_hcd_ppc_soc_drv_remove, |
| .shutdown = usb_hcd_platform_shutdown, |
| #ifdef CONFIG_PM |
| /*.suspend = ohci_hcd_ppc_soc_drv_suspend,*/ |
| /*.resume = ohci_hcd_ppc_soc_drv_resume,*/ |
| #endif |
| .driver = { |
| .name = "ppc-soc-ohci", |
| .owner = THIS_MODULE, |
| }, |
| }; |
| |
| 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 platform_driver_register(&ohci_hcd_ppc_soc_driver); |
| } |
| |
| static void __exit ohci_hcd_ppc_soc_cleanup(void) |
| { |
| platform_driver_unregister(&ohci_hcd_ppc_soc_driver); |
| } |
| |
| module_init(ohci_hcd_ppc_soc_init); |
| module_exit(ohci_hcd_ppc_soc_cleanup); |