2 * OHCI HCD (Host Controller Driver) for USB.
4 * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
5 * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
6 * (C) Copyright 2002 Hewlett-Packard Company
7 * (C) Copyright 2003-2005 MontaVista Software Inc.
9 * Bus Glue for PPC On-Chip OHCI driver
10 * Tested on Freescale MPC5200 and IBM STB04xxx
12 * Modified by Dale Farnsworth <dale@farnsworth.org> from ohci-sa1111.c
14 * This file is licenced under the GPL.
17 /* configure so an HC device and id are always provided */
18 /* always called with process context; sleeping is OK */
21 * usb_hcd_ppc_soc_probe - initialize On-Chip HCDs
22 * Context: !in_interrupt()
24 * Allocates basic resources for this USB host controller.
26 * Store this function in the HCD's struct pci_driver as probe().
28 static int usb_hcd_ppc_soc_probe(const struct hc_driver *driver,
29 struct platform_device *pdev)
33 struct ohci_hcd *ohci;
37 pr_debug("initializing PPC-SOC USB Controller\n");
39 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
41 pr_debug(__FILE__ ": no irq\n");
46 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
48 pr_debug(__FILE__ ": no reg addr\n");
52 hcd = usb_create_hcd(driver, &pdev->dev, "PPC-SOC USB");
55 hcd->rsrc_start = res->start;
56 hcd->rsrc_len = res->end - res->start + 1;
58 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
59 pr_debug(__FILE__ ": request_mem_region failed\n");
64 hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
66 pr_debug(__FILE__ ": ioremap failed\n");
71 ohci = hcd_to_ohci(hcd);
72 ohci->flags |= OHCI_BIG_ENDIAN;
75 retval = usb_add_hcd(hcd, irq, SA_INTERRUPT);
79 pr_debug("Removing PPC-SOC USB Controller\n");
83 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
90 /* may be called without controller electrically present */
91 /* may be called with controller, bus, and devices active */
94 * usb_hcd_ppc_soc_remove - shutdown processing for On-Chip HCDs
95 * @pdev: USB Host Controller being removed
96 * Context: !in_interrupt()
98 * Reverses the effect of usb_hcd_ppc_soc_probe().
99 * It is always called from a thread
100 * context, normally "rmmod", "apmd", or something similar.
103 static void usb_hcd_ppc_soc_remove(struct usb_hcd *hcd,
104 struct platform_device *pdev)
108 pr_debug("stopping PPC-SOC USB Controller\n");
111 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
116 ohci_ppc_soc_start(struct usb_hcd *hcd)
118 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
121 if ((ret = ohci_init(ohci)) < 0)
124 if ((ret = ohci_run(ohci)) < 0) {
125 err("can't start %s", ohci_to_hcd(ohci)->self.bus_name);
133 static const struct hc_driver ohci_ppc_soc_hc_driver = {
134 .description = hcd_name,
135 .hcd_priv_size = sizeof(struct ohci_hcd),
138 * generic hardware linkage
141 .flags = HCD_USB11 | HCD_MEMORY,
144 * basic lifecycle operations
146 .start = ohci_ppc_soc_start,
150 * managing i/o requests and associated device resources
152 .urb_enqueue = ohci_urb_enqueue,
153 .urb_dequeue = ohci_urb_dequeue,
154 .endpoint_disable = ohci_endpoint_disable,
159 .get_frame_number = ohci_get_frame,
164 .hub_status_data = ohci_hub_status_data,
165 .hub_control = ohci_hub_control,
167 .bus_suspend = ohci_bus_suspend,
168 .bus_resume = ohci_bus_resume,
170 .start_port_reset = ohci_start_port_reset,
173 static int ohci_hcd_ppc_soc_drv_probe(struct device *dev)
175 struct platform_device *pdev = to_platform_device(dev);
181 ret = usb_hcd_ppc_soc_probe(&ohci_ppc_soc_hc_driver, pdev);
185 static int ohci_hcd_ppc_soc_drv_remove(struct device *dev)
187 struct platform_device *pdev = to_platform_device(dev);
188 struct usb_hcd *hcd = dev_get_drvdata(dev);
190 usb_hcd_ppc_soc_remove(hcd, pdev);
194 static struct device_driver ohci_hcd_ppc_soc_driver = {
195 .name = "ppc-soc-ohci",
196 .owner = THIS_MODULE,
197 .bus = &platform_bus_type,
198 .probe = ohci_hcd_ppc_soc_drv_probe,
199 .remove = ohci_hcd_ppc_soc_drv_remove,
201 /*.suspend = ohci_hcd_ppc_soc_drv_suspend,*/
202 /*.resume = ohci_hcd_ppc_soc_drv_resume,*/
206 static int __init ohci_hcd_ppc_soc_init(void)
208 pr_debug(DRIVER_INFO " (PPC SOC)\n");
209 pr_debug("block sizes: ed %d td %d\n", sizeof(struct ed),
212 return driver_register(&ohci_hcd_ppc_soc_driver);
215 static void __exit ohci_hcd_ppc_soc_cleanup(void)
217 driver_unregister(&ohci_hcd_ppc_soc_driver);
220 module_init(ohci_hcd_ppc_soc_init);
221 module_exit(ohci_hcd_ppc_soc_cleanup);