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(dev
);
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
);