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
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
|
/*
* Driver for the Auvitek USB bridge
*
* Copyright (c) 2008 Steven Toth <stoth@linuxtv.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
*
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/module.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <linux/mutex.h>
#include "au0828.h"
/*
* 1 = General debug messages
* 2 = USB handling
* 4 = I2C related
* 8 = Bridge related
*/
int au0828_debug;
module_param_named(debug, au0828_debug, int, 0644);
MODULE_PARM_DESC(debug, "enable debug messages");
#define _AU0828_BULKPIPE 0x03
#define _BULKPIPESIZE 0xffff
static int send_control_msg(struct au0828_dev *dev, u16 request, u32 value,
u16 index, unsigned char *cp, u16 size);
static int recv_control_msg(struct au0828_dev *dev, u16 request, u32 value,
u16 index, unsigned char *cp, u16 size);
/* USB Direction */
#define CMD_REQUEST_IN 0x00
#define CMD_REQUEST_OUT 0x01
u32 au0828_readreg(struct au0828_dev *dev, u16 reg)
{
recv_control_msg(dev, CMD_REQUEST_IN, 0, reg, dev->ctrlmsg, 1);
dprintk(8, "%s(0x%04x) = 0x%02x\n", __func__, reg, dev->ctrlmsg[0]);
return dev->ctrlmsg[0];
}
u32 au0828_writereg(struct au0828_dev *dev, u16 reg, u32 val)
{
dprintk(8, "%s(0x%04x, 0x%02x)\n", __func__, reg, val);
return send_control_msg(dev, CMD_REQUEST_OUT, val, reg,
dev->ctrlmsg, 0);
}
static void cmd_msg_dump(struct au0828_dev *dev)
{
int i;
for (i = 0; i < sizeof(dev->ctrlmsg); i += 16)
dprintk(2, "%s() %02x %02x %02x %02x %02x %02x %02x %02x "
"%02x %02x %02x %02x %02x %02x %02x %02x\n",
__func__,
dev->ctrlmsg[i+0], dev->ctrlmsg[i+1],
dev->ctrlmsg[i+2], dev->ctrlmsg[i+3],
dev->ctrlmsg[i+4], dev->ctrlmsg[i+5],
dev->ctrlmsg[i+6], dev->ctrlmsg[i+7],
dev->ctrlmsg[i+8], dev->ctrlmsg[i+9],
dev->ctrlmsg[i+10], dev->ctrlmsg[i+11],
dev->ctrlmsg[i+12], dev->ctrlmsg[i+13],
dev->ctrlmsg[i+14], dev->ctrlmsg[i+15]);
}
static int send_control_msg(struct au0828_dev *dev, u16 request, u32 value,
u16 index, unsigned char *cp, u16 size)
{
int status = -ENODEV;
mutex_lock(&dev->mutex);
if (dev->usbdev) {
/* cp must be memory that has been allocated by kmalloc */
status = usb_control_msg(dev->usbdev,
usb_sndctrlpipe(dev->usbdev, 0),
request,
USB_DIR_OUT | USB_TYPE_VENDOR |
USB_RECIP_DEVICE,
value, index,
cp, size, 1000);
status = min(status, 0);
if (status < 0) {
printk(KERN_ERR "%s() Failed sending control message, error %d.\n",
__func__, status);
}
}
mutex_unlock(&dev->mutex);
return status;
}
static int recv_control_msg(struct au0828_dev *dev, u16 request, u32 value,
u16 index, unsigned char *cp, u16 size)
{
int status = -ENODEV;
mutex_lock(&dev->mutex);
if (dev->usbdev) {
memset(dev->ctrlmsg, 0, sizeof(dev->ctrlmsg));
/* cp must be memory that has been allocated by kmalloc */
status = usb_control_msg(dev->usbdev,
usb_rcvctrlpipe(dev->usbdev, 0),
request,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
value, index,
cp, size, 1000);
status = min(status, 0);
if (status < 0) {
printk(KERN_ERR "%s() Failed receiving control message, error %d.\n",
__func__, status);
} else
cmd_msg_dump(dev);
}
mutex_unlock(&dev->mutex);
return status;
}
static void au0828_usb_disconnect(struct usb_interface *interface)
{
struct au0828_dev *dev = usb_get_intfdata(interface);
dprintk(1, "%s()\n", __func__);
/* Digital TV */
au0828_dvb_unregister(dev);
if (dev->board.input != NULL)
au0828_analog_unregister(dev);
/* I2C */
au0828_i2c_unregister(dev);
usb_set_intfdata(interface, NULL);
mutex_lock(&dev->mutex);
dev->usbdev = NULL;
mutex_unlock(&dev->mutex);
kfree(dev);
}
static int au0828_usb_probe(struct usb_interface *interface,
const struct usb_device_id *id)
{
int ifnum, i;
struct au0828_dev *dev;
struct usb_device *usbdev = interface_to_usbdev(interface);
struct usb_host_interface *iface_desc;
struct usb_endpoint_descriptor *endpoint;
ifnum = interface->altsetting->desc.bInterfaceNumber;
if (ifnum != 0)
return -ENODEV;
dprintk(1, "%s() vendor id 0x%x device id 0x%x ifnum:%d\n", __func__,
le16_to_cpu(usbdev->descriptor.idVendor),
le16_to_cpu(usbdev->descriptor.idProduct),
ifnum);
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (dev == NULL) {
printk(KERN_ERR "%s() Unable to allocate memory\n", __func__);
return -ENOMEM;
}
mutex_init(&dev->mutex);
mutex_init(&dev->dvb.lock);
dev->usbdev = usbdev;
dev->boardnr = id->driver_info;
usb_set_intfdata(interface, dev);
/* set au0828 usb interface0 to as5 */
usb_set_interface(usbdev,
interface->cur_altsetting->desc.bInterfaceNumber, 5);
/* Figure out which endpoint has the isoc interface */
iface_desc = interface->cur_altsetting;
for(i = 0; i < iface_desc->desc.bNumEndpoints; i++){
endpoint = &iface_desc->endpoint[i].desc;
if(((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) &&
((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_ISOC)){
/* we find our isoc in endpoint */
u16 tmp = le16_to_cpu(endpoint->wMaxPacketSize);
dev->max_pkt_size = (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
dev->isoc_in_endpointaddr = endpoint->bEndpointAddress;
}
}
if(!(dev->isoc_in_endpointaddr)) {
printk("Could not locate isoc endpoint\n");
kfree(dev);
return -ENODEV;
}
/* Power Up the bridge */
au0828_write(dev, REG_600, 1 << 4);
/* Bring up the GPIO's and supporting devices */
au0828_gpio_setup(dev);
/* I2C */
au0828_i2c_register(dev);
/* Setup */
au0828_card_setup(dev);
/* Analog TV */
if (dev->board.input != NULL)
au0828_analog_register(dev);
/* Digital TV */
au0828_dvb_register(dev);
printk(KERN_INFO "Registered device AU0828 [%s]\n",
dev->board.name == NULL ? "Unset" : dev->board.name);
return 0;
}
static struct usb_driver au0828_usb_driver = {
.name = DRIVER_NAME,
.probe = au0828_usb_probe,
.disconnect = au0828_usb_disconnect,
.id_table = au0828_usb_id_table,
};
static int __init au0828_init(void)
{
int ret;
if (au0828_debug & 1)
printk(KERN_INFO "%s() Debugging is enabled\n", __func__);
if (au0828_debug & 2)
printk(KERN_INFO "%s() USB Debugging is enabled\n", __func__);
if (au0828_debug & 4)
printk(KERN_INFO "%s() I2C Debugging is enabled\n", __func__);
if (au0828_debug & 8)
printk(KERN_INFO "%s() Bridge Debugging is enabled\n",
__func__);
printk(KERN_INFO "au0828 driver loaded\n");
ret = usb_register(&au0828_usb_driver);
if (ret)
printk(KERN_ERR "usb_register failed, error = %d\n", ret);
return ret;
}
static void __exit au0828_exit(void)
{
usb_deregister(&au0828_usb_driver);
}
module_init(au0828_init);
module_exit(au0828_exit);
MODULE_DESCRIPTION("Driver for Auvitek AU0828 based products");
MODULE_AUTHOR("Steven Toth <stoth@linuxtv.org>");
MODULE_LICENSE("GPL");
|