1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
|
/*
* Generic platform ohci driver
*
* Copyright 2007 Michael Buesch <m@bues.ch>
* Copyright 2011-2012 Hauke Mehrtens <hauke@hauke-m.de>
*
* Derived from the OCHI-SSB driver
* Derived from the OHCI-PCI driver
* Copyright 1999 Roman Weissgaerber
* Copyright 2000-2002 David Brownell
* Copyright 1999 Linus Torvalds
* Copyright 1999 Gregory P. Smith
*
* Licensed under the GNU/GPL. See COPYING for details.
*/
#include <linux/platform_device.h>
#include <linux/usb/ohci_pdriver.h>
static int ohci_platform_reset(struct usb_hcd *hcd)
{
struct platform_device *pdev = to_platform_device(hcd->self.controller);
struct usb_ohci_pdata *pdata = pdev->dev.platform_data;
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
int err;
if (pdata->big_endian_desc)
ohci->flags |= OHCI_QUIRK_BE_DESC;
if (pdata->big_endian_mmio)
ohci->flags |= OHCI_QUIRK_BE_MMIO;
if (pdata->no_big_frame_no)
ohci->flags |= OHCI_QUIRK_FRAME_NO;
ohci_hcd_init(ohci);
err = ohci_init(ohci);
return err;
}
static int ohci_platform_start(struct usb_hcd *hcd)
{
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
int err;
err = ohci_run(ohci);
if (err < 0) {
ohci_err(ohci, "can't start\n");
ohci_stop(hcd);
}
return err;
}
static const struct hc_driver ohci_platform_hc_driver = {
.description = hcd_name,
.product_desc = "Generic Platform OHCI Controller",
.hcd_priv_size = sizeof(struct ohci_hcd),
.irq = ohci_irq,
.flags = HCD_MEMORY | HCD_USB11,
.reset = ohci_platform_reset,
.start = ohci_platform_start,
.stop = ohci_stop,
.shutdown = ohci_shutdown,
.urb_enqueue = ohci_urb_enqueue,
.urb_dequeue = ohci_urb_dequeue,
.endpoint_disable = ohci_endpoint_disable,
.get_frame_number = ohci_get_frame,
.hub_status_data = ohci_hub_status_data,
.hub_control = ohci_hub_control,
#ifdef CONFIG_PM
.bus_suspend = ohci_bus_suspend,
.bus_resume = ohci_bus_resume,
#endif
.start_port_reset = ohci_start_port_reset,
};
static int __devinit ohci_platform_probe(struct platform_device *dev)
{
struct usb_hcd *hcd;
struct resource *res_mem;
struct usb_ohci_pdata *pdata = dev->dev.platform_data;
int irq;
int err = -ENOMEM;
if (!pdata) {
WARN_ON(1);
return -ENODEV;
}
if (usb_disabled())
return -ENODEV;
irq = platform_get_irq(dev, 0);
if (irq < 0) {
pr_err("no irq provided");
return irq;
}
res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
if (!res_mem) {
pr_err("no memory recourse provided");
return -ENXIO;
}
if (pdata->power_on) {
err = pdata->power_on(dev);
if (err < 0)
return err;
}
hcd = usb_create_hcd(&ohci_platform_hc_driver, &dev->dev,
dev_name(&dev->dev));
if (!hcd) {
err = -ENOMEM;
goto err_power;
}
hcd->rsrc_start = res_mem->start;
hcd->rsrc_len = resource_size(res_mem);
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
pr_err("controller already in use");
err = -EBUSY;
goto err_put_hcd;
}
hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
if (!hcd->regs) {
err = -ENOMEM;
goto err_release_region;
}
err = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (err)
goto err_iounmap;
platform_set_drvdata(dev, hcd);
return err;
err_iounmap:
iounmap(hcd->regs);
err_release_region:
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
err_put_hcd:
usb_put_hcd(hcd);
err_power:
if (pdata->power_off)
pdata->power_off(dev);
return err;
}
static int __devexit ohci_platform_remove(struct platform_device *dev)
{
struct usb_hcd *hcd = platform_get_drvdata(dev);
struct usb_ohci_pdata *pdata = dev->dev.platform_data;
usb_remove_hcd(hcd);
iounmap(hcd->regs);
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
usb_put_hcd(hcd);
platform_set_drvdata(dev, NULL);
if (pdata->power_off)
pdata->power_off(dev);
return 0;
}
#ifdef CONFIG_PM
static int ohci_platform_suspend(struct device *dev)
{
struct usb_ohci_pdata *pdata = dev->platform_data;
struct platform_device *pdev =
container_of(dev, struct platform_device, dev);
if (pdata->power_suspend)
pdata->power_suspend(pdev);
return 0;
}
static int ohci_platform_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct usb_ohci_pdata *pdata = dev->platform_data;
struct platform_device *pdev =
container_of(dev, struct platform_device, dev);
if (pdata->power_on) {
int err = pdata->power_on(pdev);
if (err < 0)
return err;
}
ohci_finish_controller_resume(hcd);
return 0;
}
#else /* !CONFIG_PM */
#define ohci_platform_suspend NULL
#define ohci_platform_resume NULL
#endif /* CONFIG_PM */
static const struct platform_device_id ohci_platform_table[] = {
{ "ohci-platform", 0 },
{ }
};
MODULE_DEVICE_TABLE(platform, ohci_platform_table);
static const struct dev_pm_ops ohci_platform_pm_ops = {
.suspend = ohci_platform_suspend,
.resume = ohci_platform_resume,
};
static struct platform_driver ohci_platform_driver = {
.id_table = ohci_platform_table,
.probe = ohci_platform_probe,
.remove = __devexit_p(ohci_platform_remove),
.shutdown = usb_hcd_platform_shutdown,
.driver = {
.owner = THIS_MODULE,
.name = "ohci-platform",
.pm = &ohci_platform_pm_ops,
}
};
|
