1 /*
2 * OHCI HCD (Host Controller Driver) for USB.
3 *
4 * Copyright (C) 2008 Renesas Solutions Corp.
5 *
6 * Author : Yoshihiro Shimoda <shimoda.yoshihiro@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
ohci_sh_start(struct usb_hcd * hcd)25 static 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
36 static 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
80 #define resource_len(r) (((r)->end - (r)->start) + 1)
ohci_hcd_sh_probe(struct platform_device * pdev)81 static int ohci_hcd_sh_probe(struct platform_device *pdev)
82 {
83 struct resource *res = NULL;
84 struct usb_hcd *hcd = NULL;
85 int irq = -1;
86 int ret;
87
88 if (usb_disabled())
89 return -ENODEV;
90
91 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
92 if (!res) {
93 err("platform_get_resource error.");
94 return -ENODEV;
95 }
96
97 irq = platform_get_irq(pdev, 0);
98 if (irq < 0) {
99 err("platform_get_irq error.");
100 return -ENODEV;
101 }
102
103 /* initialize hcd */
104 hcd = usb_create_hcd(&ohci_sh_hc_driver, &pdev->dev, (char *)hcd_name);
105 if (!hcd) {
106 err("Failed to create hcd");
107 return -ENOMEM;
108 }
109
110 hcd->regs = (void __iomem *)res->start;
111 hcd->rsrc_start = res->start;
112 hcd->rsrc_len = resource_len(res);
113 ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
114 if (ret != 0) {
115 err("Failed to add hcd");
116 usb_put_hcd(hcd);
117 return ret;
118 }
119
120 return ret;
121 }
122
ohci_hcd_sh_remove(struct platform_device * pdev)123 static int ohci_hcd_sh_remove(struct platform_device *pdev)
124 {
125 struct usb_hcd *hcd = platform_get_drvdata(pdev);
126
127 usb_remove_hcd(hcd);
128 usb_put_hcd(hcd);
129
130 return 0;
131 }
132
133 static struct platform_driver ohci_hcd_sh_driver = {
134 .probe = ohci_hcd_sh_probe,
135 .remove = ohci_hcd_sh_remove,
136 .shutdown = usb_hcd_platform_shutdown,
137 .driver = {
138 .name = "sh_ohci",
139 .owner = THIS_MODULE,
140 },
141 };
142
143 MODULE_ALIAS("platform:sh_ohci");
144