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
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 return 0;
33 }
34
35 static const struct hc_driver ohci_sh_hc_driver = {
36 .description = hcd_name,
37 .product_desc = "SuperH OHCI",
38 .hcd_priv_size = sizeof(struct ohci_hcd),
39
40 /*
41 * generic hardware linkage
42 */
43 .irq = ohci_irq,
44 .flags = HCD_USB11 | HCD_MEMORY,
45
46 /*
47 * basic lifecycle operations
48 */
49 .start = ohci_sh_start,
50 .stop = ohci_stop,
51 .shutdown = ohci_shutdown,
52
53 /*
54 * managing i/o requests and associated device resources
55 */
56 .urb_enqueue = ohci_urb_enqueue,
57 .urb_dequeue = ohci_urb_dequeue,
58 .endpoint_disable = ohci_endpoint_disable,
59
60 /*
61 * scheduling support
62 */
63 .get_frame_number = ohci_get_frame,
64
65 /*
66 * root hub support
67 */
68 .hub_status_data = ohci_hub_status_data,
69 .hub_control = ohci_hub_control,
70 #ifdef CONFIG_PM
71 .bus_suspend = ohci_bus_suspend,
72 .bus_resume = ohci_bus_resume,
73 #endif
74 .start_port_reset = ohci_start_port_reset,
75 };
76
77 /*-------------------------------------------------------------------------*/
78
ohci_hcd_sh_probe(struct platform_device * pdev)79 static int ohci_hcd_sh_probe(struct platform_device *pdev)
80 {
81 struct resource *res = NULL;
82 struct usb_hcd *hcd = NULL;
83 int irq = -1;
84 int ret;
85
86 if (usb_disabled())
87 return -ENODEV;
88
89 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
90 if (!res) {
91 err("platform_get_resource error.");
92 return -ENODEV;
93 }
94
95 irq = platform_get_irq(pdev, 0);
96 if (irq < 0) {
97 err("platform_get_irq error.");
98 return -ENODEV;
99 }
100
101 /* initialize hcd */
102 hcd = usb_create_hcd(&ohci_sh_hc_driver, &pdev->dev, (char *)hcd_name);
103 if (!hcd) {
104 err("Failed to create hcd");
105 return -ENOMEM;
106 }
107
108 hcd->regs = (void __iomem *)res->start;
109 hcd->rsrc_start = res->start;
110 hcd->rsrc_len = resource_size(res);
111 ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
112 if (ret != 0) {
113 err("Failed to add hcd");
114 usb_put_hcd(hcd);
115 return ret;
116 }
117
118 return ret;
119 }
120
ohci_hcd_sh_remove(struct platform_device * pdev)121 static int ohci_hcd_sh_remove(struct platform_device *pdev)
122 {
123 struct usb_hcd *hcd = platform_get_drvdata(pdev);
124
125 usb_remove_hcd(hcd);
126 usb_put_hcd(hcd);
127
128 return 0;
129 }
130
131 static struct platform_driver ohci_hcd_sh_driver = {
132 .probe = ohci_hcd_sh_probe,
133 .remove = ohci_hcd_sh_remove,
134 .shutdown = usb_hcd_platform_shutdown,
135 .driver = {
136 .name = "sh_ohci",
137 .owner = THIS_MODULE,
138 },
139 };
140
141 MODULE_ALIAS("platform:sh_ohci");
142