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
233
234
235
|
/*
* ADM5120 HCD (Host Controller Driver) for USB
*
* Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org>
*
* This file was derived from: drivers/usb/host/ohci-au1xxx.c
* (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
* (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
* (C) Copyright 2002 Hewlett-Packard Company
*
* Written by Christopher Hoover <ch@hpl.hp.com>
* Based on fragments of previous driver by Rusell King et al.
*
* Modified for LH7A404 from ahcd-sa1111.c
* by Durgesh Pattamatta <pattamattad@sharpsec.com>
* Modified for AMD Alchemy Au1xxx
* by Matt Porter <mporter@kernel.crashing.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
*/
#include <linux/platform_device.h>
#include <linux/signal.h>
#include <asm/bootinfo.h>
#include <asm/mach-adm5120/adm5120_defs.h>
#ifdef DEBUG
#define HCD_DBG(f, a...) printk(KERN_DEBUG "%s: " f, hcd_name, ## a)
#else
#define HCD_DBG(f, a...) do {} while (0)
#endif
#define HCD_ERR(f, a...) printk(KERN_ERR "%s: " f, hcd_name, ## a)
#define HCD_INFO(f, a...) printk(KERN_INFO "%s: " f, hcd_name, ## a)
/*-------------------------------------------------------------------------*/
static int admhc_adm5120_probe(const struct hc_driver *driver,
struct platform_device *dev)
{
int retval;
struct usb_hcd *hcd;
int irq;
struct resource *regs;
/* sanity checks */
regs = platform_get_resource(dev, IORESOURCE_MEM, 0);
if (!regs) {
HCD_DBG("no IOMEM resource found\n");
return -ENODEV;
}
irq = platform_get_irq(dev, 0);
if (irq < 0) {
HCD_DBG("no IRQ resource found\n");
return -ENODEV;
}
hcd = usb_create_hcd(driver, &dev->dev, "ADM5120");
if (!hcd)
return -ENOMEM;
hcd->rsrc_start = regs->start;
hcd->rsrc_len = regs->end - regs->start + 1;
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
HCD_DBG("request_mem_region failed\n");
retval = -EBUSY;
goto err_dev;
}
hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
if (!hcd->regs) {
HCD_DBG("ioremap failed\n");
retval = -ENOMEM;
goto err_mem;
}
admhc_hcd_init(hcd_to_admhcd(hcd));
retval = usb_add_hcd(hcd, irq, IRQF_DISABLED);
if (retval)
goto err_io;
return 0;
err_io:
iounmap(hcd->regs);
err_mem:
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
err_dev:
usb_put_hcd(hcd);
return retval;
}
/* may be called without controller electrically present */
/* may be called with controller, bus, and devices active */
static void admhc_adm5120_remove(struct usb_hcd *hcd,
struct platform_device *dev)
{
usb_remove_hcd(hcd);
iounmap(hcd->regs);
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
usb_put_hcd(hcd);
}
/*-------------------------------------------------------------------------*/
static int __devinit
admhc_adm5120_start(struct usb_hcd *hcd)
{
struct admhcd *ahcd = hcd_to_admhcd(hcd);
int ret;
ret = admhc_init(ahcd);
if (ret < 0) {
HCD_ERR("unable to init %s\n", hcd->self.bus_name);
goto err;
}
ret = admhc_run(ahcd);
if (ret < 0) {
HCD_ERR("unable to run %s\n", hcd->self.bus_name);
goto err_stop;
}
return 0;
err_stop:
admhc_stop(hcd);
err:
return ret;
}
/*-------------------------------------------------------------------------*/
static const struct hc_driver adm5120_hc_driver = {
.description = hcd_name,
.product_desc = "ADM5120 built-in USB 1.1 Host Controller",
.hcd_priv_size = sizeof(struct admhcd),
/*
* generic hardware linkage
*/
.irq = admhc_irq,
.flags = HCD_USB11 | HCD_MEMORY,
/*
* basic lifecycle operations
*/
.start = admhc_adm5120_start,
.stop = admhc_stop,
.shutdown = admhc_shutdown,
/*
* managing i/o requests and associated device resources
*/
.urb_enqueue = admhc_urb_enqueue,
.urb_dequeue = admhc_urb_dequeue,
.endpoint_disable = admhc_endpoint_disable,
/*
* scheduling support
*/
.get_frame_number = admhc_get_frame_number,
/*
* root hub support
*/
.hub_status_data = admhc_hub_status_data,
.hub_control = admhc_hub_control,
#ifdef CONFIG_PM
.bus_suspend = admhc_bus_suspend,
.bus_resume = admhc_bus_resume,
#endif
.start_port_reset = admhc_start_port_reset,
};
/*-------------------------------------------------------------------------*/
static int usb_hcd_adm5120_probe(struct platform_device *pdev)
{
int ret;
ret = admhc_adm5120_probe(&adm5120_hc_driver, pdev);
return ret;
}
static int usb_hcd_adm5120_remove(struct platform_device *pdev)
{
struct usb_hcd *hcd = platform_get_drvdata(pdev);
admhc_adm5120_remove(hcd, pdev);
return 0;
}
#ifdef CONFIG_PM
/* TODO */
static int usb_hcd_adm5120_suspend(struct platform_device *dev)
{
struct usb_hcd *hcd = platform_get_drvdata(dev);
return 0;
}
static int usb_hcd_adm5120_resume(struct platform_device *dev)
{
struct usb_hcd *hcd = platform_get_drvdata(dev);
return 0;
}
#else
#define usb_hcd_adm5120_suspend NULL
#define usb_hcd_adm5120_resume NULL
#endif /* CONFIG_PM */
static struct platform_driver usb_hcd_adm5120_driver = {
.probe = usb_hcd_adm5120_probe,
.remove = usb_hcd_adm5120_remove,
.shutdown = usb_hcd_platform_shutdown,
.suspend = usb_hcd_adm5120_suspend,
.resume = usb_hcd_adm5120_resume,
.driver = {
.name = "adm5120-hcd",
.owner = THIS_MODULE,
},
};
|
