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 #include <linux/platform_device.h>
19 /* configure so an HC device and id are always provided */
20 /* always called with process context; sleeping is OK */
23 * usb_hcd_ppc_soc_probe - initialize On-Chip HCDs
24 * Context: !in_interrupt()
26 * Allocates basic resources for this USB host controller.
28 * Store this function in the HCD's struct pci_driver as probe().
30 static int usb_hcd_ppc_soc_probe(const struct hc_driver *driver,
31 struct platform_device *pdev)
35 struct ohci_hcd *ohci;
39 pr_debug("initializing PPC-SOC USB Controller\n");
41 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
43 pr_debug(__FILE__ ": no irq\n");
48 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
50 pr_debug(__FILE__ ": no reg addr\n");
54 hcd = usb_create_hcd(driver, &pdev->dev, "PPC-SOC USB");
57 hcd->rsrc_start = res->start;
58 hcd->rsrc_len = res->end - res->start + 1;
60 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
61 pr_debug(__FILE__ ": request_mem_region failed\n");
66 hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
68 pr_debug(__FILE__ ": ioremap failed\n");
73 ohci = hcd_to_ohci(hcd);
74 ohci->flags |= OHCI_BIG_ENDIAN;
77 retval = usb_add_hcd(hcd, irq, SA_INTERRUPT);
81 pr_debug("Removing PPC-SOC USB Controller\n");
85 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
92 /* may be called without controller electrically present */
93 /* may be called with controller, bus, and devices active */
96 * usb_hcd_ppc_soc_remove - shutdown processing for On-Chip HCDs
97 * @pdev: USB Host Controller being removed
98 * Context: !in_interrupt()
100 * Reverses the effect of usb_hcd_ppc_soc_probe().
101 * It is always called from a thread
102 * context, normally "rmmod", "apmd", or something similar.
105 static void usb_hcd_ppc_soc_remove(struct usb_hcd *hcd,
106 struct platform_device *pdev)
110 pr_debug("stopping PPC-SOC USB Controller\n");
113 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
118 ohci_ppc_soc_start(struct usb_hcd *hcd)
120 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
123 if ((ret = ohci_init(ohci)) < 0)
126 if ((ret = ohci_run(ohci)) < 0) {
127 err("can't start %s", ohci_to_hcd(ohci)->self.bus_name);
135 static const struct hc_driver ohci_ppc_soc_hc_driver = {
136 .description = hcd_name,
137 .hcd_priv_size = sizeof(struct ohci_hcd),
140 * generic hardware linkage
143 .flags = HCD_USB11 | HCD_MEMORY,
146 * basic lifecycle operations
148 .start = ohci_ppc_soc_start,
152 * managing i/o requests and associated device resources
154 .urb_enqueue = ohci_urb_enqueue,
155 .urb_dequeue = ohci_urb_dequeue,
156 .endpoint_disable = ohci_endpoint_disable,
161 .get_frame_number = ohci_get_frame,
166 .hub_status_data = ohci_hub_status_data,
167 .hub_control = ohci_hub_control,
169 .bus_suspend = ohci_bus_suspend,
170 .bus_resume = ohci_bus_resume,
172 .start_port_reset = ohci_start_port_reset,
175 static int ohci_hcd_ppc_soc_drv_probe(struct platform_device *pdev)
182 ret = usb_hcd_ppc_soc_probe(&ohci_ppc_soc_hc_driver, pdev);
186 static int ohci_hcd_ppc_soc_drv_remove(struct platform_device *pdev)
188 struct usb_hcd *hcd = platform_get_drvdata(pdev);
190 usb_hcd_ppc_soc_remove(hcd, pdev);
194 static struct platform_driver ohci_hcd_ppc_soc_driver = {
195 .probe = ohci_hcd_ppc_soc_drv_probe,
196 .remove = ohci_hcd_ppc_soc_drv_remove,
198 /*.suspend = ohci_hcd_ppc_soc_drv_suspend,*/
199 /*.resume = ohci_hcd_ppc_soc_drv_resume,*/
202 .name = "ppc-soc-ohci",
203 .owner = THIS_MODULE,
207 static int __init ohci_hcd_ppc_soc_init(void)
209 pr_debug(DRIVER_INFO " (PPC SOC)\n");
210 pr_debug("block sizes: ed %d td %d\n", sizeof(struct ed),
213 return platform_driver_register(&ohci_hcd_ppc_soc_driver);
216 static void __exit ohci_hcd_ppc_soc_cleanup(void)
218 platform_driver_unregister(&ohci_hcd_ppc_soc_driver);
221 module_init(ohci_hcd_ppc_soc_init);
222 module_exit(ohci_hcd_ppc_soc_cleanup);