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
|
/***************************************************************************
* V4L2 driver for SN9C1xx PC Camera Controllers *
* *
* Copyright (C) 2004-2006 by Luca Risolia <luca.risolia@studio.unibo.it> *
* *
* 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. *
***************************************************************************/
#ifndef _SN9C102_H_
#define _SN9C102_H_
#include <linux/usb.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-device.h>
#include <linux/device.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/time.h>
#include <linux/wait.h>
#include <linux/types.h>
#include <linux/param.h>
#include <linux/rwsem.h>
#include <linux/mutex.h>
#include <linux/string.h>
#include <linux/stddef.h>
#include <linux/kref.h>
#include "sn9c102_config.h"
#include "sn9c102_sensor.h"
#include "sn9c102_devtable.h"
enum sn9c102_frame_state {
F_UNUSED,
F_QUEUED,
F_GRABBING,
F_DONE,
F_ERROR,
};
struct sn9c102_frame_t {
void* bufmem;
struct v4l2_buffer buf;
enum sn9c102_frame_state state;
struct list_head frame;
unsigned long vma_use_count;
};
enum sn9c102_dev_state {
DEV_INITIALIZED = 0x01,
DEV_DISCONNECTED = 0x02,
DEV_MISCONFIGURED = 0x04,
};
enum sn9c102_io_method {
IO_NONE,
IO_READ,
IO_MMAP,
};
enum sn9c102_stream_state {
STREAM_OFF,
STREAM_INTERRUPT,
STREAM_ON,
};
typedef char sn9c102_sof_header_t[62];
struct sn9c102_sof_t {
sn9c102_sof_header_t header;
u16 bytesread;
};
struct sn9c102_sysfs_attr {
u16 reg, i2c_reg;
sn9c102_sof_header_t frame_header;
};
struct sn9c102_module_param {
u8 force_munmap;
u16 frame_timeout;
};
static DEFINE_MUTEX(sn9c102_sysfs_lock);
static DECLARE_RWSEM(sn9c102_dev_lock);
struct sn9c102_device {
struct video_device* v4ldev;
struct v4l2_device v4l2_dev;
enum sn9c102_bridge bridge;
struct sn9c102_sensor sensor;
struct usb_device* usbdev;
struct urb* urb[SN9C102_URBS];
void* transfer_buffer[SN9C102_URBS];
u8* control_buffer;
struct sn9c102_frame_t *frame_current, frame[SN9C102_MAX_FRAMES];
struct list_head inqueue, outqueue;
u32 frame_count, nbuffers, nreadbuffers;
enum sn9c102_io_method io;
enum sn9c102_stream_state stream;
struct v4l2_jpegcompression compression;
struct sn9c102_sysfs_attr sysfs;
struct sn9c102_sof_t sof;
u16 reg[384];
struct sn9c102_module_param module_param;
struct kref kref;
enum sn9c102_dev_state state;
u8 users;
struct completion probe;
struct mutex open_mutex, fileop_mutex;
spinlock_t queue_lock;
wait_queue_head_t wait_open, wait_frame, wait_stream;
};
/*****************************************************************************/
struct sn9c102_device*
sn9c102_match_id(struct sn9c102_device* cam, const struct usb_device_id *id)
{
return usb_match_id(usb_ifnum_to_if(cam->usbdev, 0), id) ? cam : NULL;
}
void
sn9c102_attach_sensor(struct sn9c102_device* cam,
const struct sn9c102_sensor* sensor)
{
memcpy(&cam->sensor, sensor, sizeof(struct sn9c102_sensor));
}
enum sn9c102_bridge
sn9c102_get_bridge(struct sn9c102_device* cam)
{
return cam->bridge;
}
struct sn9c102_sensor* sn9c102_get_sensor(struct sn9c102_device* cam)
{
return &cam->sensor;
}
/*****************************************************************************/
#undef DBG
#undef KDBG
#ifdef SN9C102_DEBUG
# define DBG(level, fmt, args...) \
do { \
if (debug >= (level)) { \
if ((level) == 1) \
dev_err(&cam->usbdev->dev, fmt "\n", ## args); \
else if ((level) == 2) \
dev_info(&cam->usbdev->dev, fmt "\n", ## args); \
else if ((level) >= 3) \
dev_info(&cam->usbdev->dev, "[%s:%d] " fmt "\n", \
__func__, __LINE__ , ## args); \
} \
} while (0)
# define V4LDBG(level, name, cmd) \
do { \
if (debug >= (level)) \
v4l_printk_ioctl(name, cmd); \
} while (0)
# define KDBG(level, fmt, args...) \
do { \
if (debug >= (level)) { \
if ((level) == 1 || (level) == 2) \
pr_info("sn9c102: " fmt "\n", ## args); \
else if ((level) == 3) \
pr_debug("sn9c102: [%s:%d] " fmt "\n", \
__func__, __LINE__ , ## args); \
} \
} while (0)
#else
# define DBG(level, fmt, args...) do {;} while(0)
# define V4LDBG(level, name, cmd) do {;} while(0)
# define KDBG(level, fmt, args...) do {;} while(0)
#endif
#undef PDBG
#define PDBG(fmt, args...) \
dev_info(&cam->usbdev->dev, "[%s:%s:%d] " fmt "\n", __FILE__, __func__, \
__LINE__ , ## args)
#undef PDBGG
#define PDBGG(fmt, args...) do {;} while(0) /* placeholder */
#endif /* _SN9C102_H_ */
|
