ar71xx: fix whitespaces nits
[openwrt/svn-archive/archive.git] / target / linux / ar71xx / files / drivers / usb / host / ohci-ar71xx.c
1 /*
2 * OHCI HCD (Host Controller Driver) for USB.
3 *
4 * Bus Glue for Atheros AR71xx built-in OHCI controller.
5 *
6 * Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
7 * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
8 *
9 * Parts of this file are based on Atheros' 2.6.15 BSP
10 * Copyright (C) 2007 Atheros Communications, Inc.
11 *
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License version 2 as published
14 * by the Free Software Foundation.
15 */
16
17 #include <linux/platform_device.h>
18 #include <linux/delay.h>
19
20 extern int usb_disabled(void);
21
22 static int usb_hcd_ar71xx_probe(const struct hc_driver *driver,
23 struct platform_device *pdev)
24 {
25 struct usb_hcd *hcd;
26 struct resource *res;
27 int irq;
28 int ret;
29
30 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
31 if (!res) {
32 dev_dbg(&pdev->dev, "no IRQ specified for %s\n",
33 dev_name(&pdev->dev));
34 return -ENODEV;
35 }
36 irq = res->start;
37
38 hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
39 if (!hcd)
40 return -ENOMEM;
41
42 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
43 if (!res) {
44 dev_dbg(&pdev->dev, "no base address specified for %s\n",
45 dev_name(&pdev->dev));
46 ret = -ENODEV;
47 goto err_put_hcd;
48 }
49 hcd->rsrc_start = res->start;
50 hcd->rsrc_len = res->end - res->start + 1;
51
52 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
53 dev_dbg(&pdev->dev, "controller already in use\n");
54 ret = -EBUSY;
55 goto err_put_hcd;
56 }
57
58 hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
59 if (!hcd->regs) {
60 dev_dbg(&pdev->dev, "error mapping memory\n");
61 ret = -EFAULT;
62 goto err_release_region;
63 }
64
65 ohci_hcd_init(hcd_to_ohci(hcd));
66
67 ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
68 if (ret)
69 goto err_stop_hcd;
70
71 return 0;
72
73 err_stop_hcd:
74 iounmap(hcd->regs);
75 err_release_region:
76 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
77 err_put_hcd:
78 usb_put_hcd(hcd);
79 return ret;
80 }
81
82 void usb_hcd_ar71xx_remove(struct usb_hcd *hcd, struct platform_device *pdev)
83 {
84 usb_remove_hcd(hcd);
85 iounmap(hcd->regs);
86 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
87 usb_put_hcd(hcd);
88 }
89
90 static int __devinit ohci_ar71xx_start(struct usb_hcd *hcd)
91 {
92 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
93 int ret;
94
95 ret = ohci_init(ohci);
96 if (ret < 0)
97 return ret;
98
99 ret = ohci_run(ohci);
100 if (ret < 0)
101 goto err;
102
103 return 0;
104
105 err:
106 ohci_stop(hcd);
107 return ret;
108 }
109
110 static const struct hc_driver ohci_ar71xx_hc_driver = {
111 .description = hcd_name,
112 .product_desc = "Atheros AR71xx built-in OHCI controller",
113 .hcd_priv_size = sizeof(struct ohci_hcd),
114
115 .irq = ohci_irq,
116 .flags = HCD_USB11 | HCD_MEMORY,
117
118 .start = ohci_ar71xx_start,
119 .stop = ohci_stop,
120 .shutdown = ohci_shutdown,
121
122 .urb_enqueue = ohci_urb_enqueue,
123 .urb_dequeue = ohci_urb_dequeue,
124 .endpoint_disable = ohci_endpoint_disable,
125
126 /*
127 * scheduling support
128 */
129 .get_frame_number = ohci_get_frame,
130
131 /*
132 * root hub support
133 */
134 .hub_status_data = ohci_hub_status_data,
135 .hub_control = ohci_hub_control,
136 .start_port_reset = ohci_start_port_reset,
137 };
138
139 static int ohci_hcd_ar71xx_drv_probe(struct platform_device *pdev)
140 {
141 if (usb_disabled())
142 return -ENODEV;
143
144 return usb_hcd_ar71xx_probe(&ohci_ar71xx_hc_driver, pdev);
145 }
146
147 static int ohci_hcd_ar71xx_drv_remove(struct platform_device *pdev)
148 {
149 struct usb_hcd *hcd = platform_get_drvdata(pdev);
150
151 usb_hcd_ar71xx_remove(hcd, pdev);
152 return 0;
153 }
154
155 MODULE_ALIAS("platform:ar71xx-ohci");
156
157 static struct platform_driver ohci_hcd_ar71xx_driver = {
158 .probe = ohci_hcd_ar71xx_drv_probe,
159 .remove = ohci_hcd_ar71xx_drv_remove,
160 .shutdown = usb_hcd_platform_shutdown,
161 .driver = {
162 .name = "ar71xx-ohci",
163 .owner = THIS_MODULE,
164 },
165 };