ohci-sh.c revision b5dd18d8747010e3f3eb1cc76a49f94291938559 
1/*
2 * OHCI HCD (Host Controller Driver) for USB.
3 *
4 * Copyright (C) 2008 Renesas Solutions Corp.
5 *
6 * Author : Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; version 2 of the License.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
20 *
21 */
22
23#include <linux/platform_device.h>
24
25static int ohci_sh_start(struct usb_hcd *hcd)
26{
27	struct ohci_hcd	*ohci = hcd_to_ohci(hcd);
28
29	ohci_hcd_init(ohci);
30	ohci_init(ohci);
31	ohci_run(ohci);
32	hcd->state = HC_STATE_RUNNING;
33	return 0;
34}
35
36static const struct hc_driver ohci_sh_hc_driver = {
37	.description =		hcd_name,
38	.product_desc =		"SuperH OHCI",
39	.hcd_priv_size =	sizeof(struct ohci_hcd),
40
41	/*
42	 * generic hardware linkage
43	 */
44	.irq =			ohci_irq,
45	.flags =		HCD_USB11 | HCD_MEMORY,
46
47	/*
48	 * basic lifecycle operations
49	 */
50	.start =		ohci_sh_start,
51	.stop =			ohci_stop,
52	.shutdown =		ohci_shutdown,
53
54	/*
55	 * managing i/o requests and associated device resources
56	 */
57	.urb_enqueue =		ohci_urb_enqueue,
58	.urb_dequeue =		ohci_urb_dequeue,
59	.endpoint_disable =	ohci_endpoint_disable,
60
61	/*
62	 * scheduling support
63	 */
64	.get_frame_number =	ohci_get_frame,
65
66	/*
67	 * root hub support
68	 */
69	.hub_status_data =	ohci_hub_status_data,
70	.hub_control =		ohci_hub_control,
71#ifdef	CONFIG_PM
72	.bus_suspend =		ohci_bus_suspend,
73	.bus_resume =		ohci_bus_resume,
74#endif
75	.start_port_reset =	ohci_start_port_reset,
76};
77
78/*-------------------------------------------------------------------------*/
79
80static int ohci_hcd_sh_probe(struct platform_device *pdev)
81{
82	struct resource *res = NULL;
83	struct usb_hcd *hcd = NULL;
84	int irq = -1;
85	int ret;
86
87	if (usb_disabled())
88		return -ENODEV;
89
90	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
91	if (!res) {
92		err("platform_get_resource error.");
93		return -ENODEV;
94	}
95
96	irq = platform_get_irq(pdev, 0);
97	if (irq < 0) {
98		err("platform_get_irq error.");
99		return -ENODEV;
100	}
101
102	/* initialize hcd */
103	hcd = usb_create_hcd(&ohci_sh_hc_driver, &pdev->dev, (char *)hcd_name);
104	if (!hcd) {
105		err("Failed to create hcd");
106		return -ENOMEM;
107	}
108
109	hcd->regs = (void __iomem *)res->start;
110	hcd->rsrc_start = res->start;
111	hcd->rsrc_len = resource_size(res);
112	ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
113	if (ret != 0) {
114		err("Failed to add hcd");
115		usb_put_hcd(hcd);
116		return ret;
117	}
118
119	return ret;
120}
121
122static int ohci_hcd_sh_remove(struct platform_device *pdev)
123{
124	struct usb_hcd *hcd = platform_get_drvdata(pdev);
125
126	usb_remove_hcd(hcd);
127	usb_put_hcd(hcd);
128
129	return 0;
130}
131
132static struct platform_driver ohci_hcd_sh_driver = {
133	.probe		= ohci_hcd_sh_probe,
134	.remove		= ohci_hcd_sh_remove,
135	.shutdown	= usb_hcd_platform_shutdown,
136	.driver		= {
137		.name	= "sh_ohci",
138		.owner	= THIS_MODULE,
139	},
140};
141
142MODULE_ALIAS("platform:sh_ohci");
143