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
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
|
/***************************************************************************
* Video4Linux driver for W996[87]CF JPEG USB Dual Mode Camera Chip. *
* *
* Copyright (C) 2002-2004 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 _W9968CF_H_
#define _W9968CF_H_
#include <linux/videodev2.h>
#include <linux/usb.h>
#include <linux/i2c.h>
#include <linux/device.h>
#include <linux/spinlock.h>
#include <linux/list.h>
#include <linux/wait.h>
#include <linux/param.h>
#include <linux/types.h>
#include <linux/rwsem.h>
#include <linux/mutex.h>
#include <media/v4l2-device.h>
#include <media/ovcamchip.h>
#include "w9968cf_vpp.h"
/****************************************************************************
* Default values *
****************************************************************************/
#define W9968CF_VPPMOD_LOAD 1 /* automatic 'w9968cf-vpp' module loading */
/* Comment/uncomment the following line to enable/disable debugging messages */
#define W9968CF_DEBUG
/* These have effect only if W9968CF_DEBUG is defined */
#define W9968CF_DEBUG_LEVEL 2 /* from 0 to 6. 0 for no debug informations */
#define W9968CF_SPECIFIC_DEBUG 0 /* 0 or 1 */
#define W9968CF_MAX_DEVICES 32
#define W9968CF_SIMCAMS W9968CF_MAX_DEVICES /* simultaneous cameras */
#define W9968CF_MAX_BUFFERS 32
#define W9968CF_BUFFERS 2 /* n. of frame buffers from 2 to MAX_BUFFERS */
/* Maximum data payload sizes in bytes for alternate settings */
static const u16 wMaxPacketSize[] = {1023, 959, 895, 831, 767, 703, 639, 575,
511, 447, 383, 319, 255, 191, 127, 63};
#define W9968CF_PACKET_SIZE 1023 /* according to wMaxPacketSizes[] */
#define W9968CF_MIN_PACKET_SIZE 63 /* minimum value */
#define W9968CF_ISO_PACKETS 5 /* n.of packets for isochronous transfers */
#define W9968CF_USB_CTRL_TIMEOUT 1000 /* timeout (ms) for usb control commands */
#define W9968CF_URBS 2 /* n. of scheduled URBs for ISO transfer */
#define W9968CF_I2C_BUS_DELAY 4 /* delay in us for I2C bit r/w operations */
#define W9968CF_I2C_RW_RETRIES 15 /* number of max I2C r/w retries */
/* Available video formats */
struct w9968cf_format {
const u16 palette;
const u16 depth;
const u8 compression;
};
static const struct w9968cf_format w9968cf_formatlist[] = {
{ VIDEO_PALETTE_UYVY, 16, 0 }, /* original video */
{ VIDEO_PALETTE_YUV422P, 16, 1 }, /* with JPEG compression */
{ VIDEO_PALETTE_YUV420P, 12, 1 }, /* with JPEG compression */
{ VIDEO_PALETTE_YUV420, 12, 1 }, /* same as YUV420P */
{ VIDEO_PALETTE_YUYV, 16, 0 }, /* software conversion */
{ VIDEO_PALETTE_YUV422, 16, 0 }, /* software conversion */
{ VIDEO_PALETTE_GREY, 8, 0 }, /* software conversion */
{ VIDEO_PALETTE_RGB555, 16, 0 }, /* software conversion */
{ VIDEO_PALETTE_RGB565, 16, 0 }, /* software conversion */
{ VIDEO_PALETTE_RGB24, 24, 0 }, /* software conversion */
{ VIDEO_PALETTE_RGB32, 32, 0 }, /* software conversion */
{ 0, 0, 0 } /* 0 is a terminating entry */
};
#define W9968CF_DECOMPRESSION 2 /* decomp:0=disable,1=force,2=any formats */
#define W9968CF_PALETTE_DECOMP_OFF VIDEO_PALETTE_UYVY /* when decomp=0 */
#define W9968CF_PALETTE_DECOMP_FORCE VIDEO_PALETTE_YUV420P /* when decomp=1 */
#define W9968CF_PALETTE_DECOMP_ON VIDEO_PALETTE_UYVY /* when decomp=2 */
#define W9968CF_FORCE_RGB 0 /* read RGB instead of BGR, yes=1/no=0 */
#define W9968CF_MAX_WIDTH 800 /* Has effect if up-scaling is on */
#define W9968CF_MAX_HEIGHT 600 /* Has effect if up-scaling is on */
#define W9968CF_WIDTH 320 /* from 128 to 352, multiple of 16 */
#define W9968CF_HEIGHT 240 /* from 96 to 288, multiple of 16 */
#define W9968CF_CLAMPING 0 /* 0 disable, 1 enable video data clamping */
#define W9968CF_FILTER_TYPE 0 /* 0 disable 1 (1-2-1), 2 (2-3-6-3-2) */
#define W9968CF_DOUBLE_BUFFER 1 /* 0 disable, 1 enable double buffer */
#define W9968CF_LARGEVIEW 1 /* 0 disable, 1 enable */
#define W9968CF_UPSCALING 0 /* 0 disable, 1 enable */
#define W9968CF_MONOCHROME 0 /* 0 not monochrome, 1 monochrome sensor */
#define W9968CF_BRIGHTNESS 31000 /* from 0 to 65535 */
#define W9968CF_HUE 32768 /* from 0 to 65535 */
#define W9968CF_COLOUR 32768 /* from 0 to 65535 */
#define W9968CF_CONTRAST 50000 /* from 0 to 65535 */
#define W9968CF_WHITENESS 32768 /* from 0 to 65535 */
#define W9968CF_AUTOBRIGHT 0 /* 0 disable, 1 enable automatic brightness */
#define W9968CF_AUTOEXP 1 /* 0 disable, 1 enable automatic exposure */
#define W9968CF_LIGHTFREQ 50 /* light frequency. 50Hz (Europe) or 60Hz */
#define W9968CF_BANDINGFILTER 0 /* 0 disable, 1 enable banding filter */
#define W9968CF_BACKLIGHT 0 /* 0 or 1, 1=object is lit from behind */
#define W9968CF_MIRROR 0 /* 0 or 1 [don't] reverse image horizontally*/
#define W9968CF_CLOCKDIV -1 /* -1 = automatic clock divisor */
#define W9968CF_DEF_CLOCKDIVISOR 0 /* default sensor clock divisor value */
/****************************************************************************
* Globals *
****************************************************************************/
#define W9968CF_MODULE_NAME "V4L driver for W996[87]CF JPEG USB " \
"Dual Mode Camera Chip"
#define W9968CF_MODULE_VERSION "1:1.34-basic"
#define W9968CF_MODULE_AUTHOR "(C) 2002-2004 Luca Risolia"
#define W9968CF_AUTHOR_EMAIL "<luca.risolia@studio.unibo.it>"
#define W9968CF_MODULE_LICENSE "GPL"
static const struct usb_device_id winbond_id_table[] = {
{
/* Creative Labs Video Blaster WebCam Go Plus */
USB_DEVICE(0x041e, 0x4003),
.driver_info = (unsigned long)"w9968cf",
},
{
/* Generic W996[87]CF JPEG USB Dual Mode Camera */
USB_DEVICE(0x1046, 0x9967),
.driver_info = (unsigned long)"w9968cf",
},
{ } /* terminating entry */
};
/* W996[87]CF camera models, internal ids: */
enum w9968cf_model_id {
W9968CF_MOD_GENERIC = 1, /* Generic W996[87]CF based device */
W9968CF_MOD_CLVBWGP = 11,/*Creative Labs Video Blaster WebCam Go Plus*/
W9968CF_MOD_ADPVDMA = 21, /* Aroma Digi Pen VGA Dual Mode ADG-5000 */
W9986CF_MOD_AAU = 31, /* AVerMedia AVerTV USB */
W9968CF_MOD_CLVBWG = 34, /* Creative Labs Video Blaster WebCam Go */
W9968CF_MOD_LL = 37, /* Lebon LDC-035A */
W9968CF_MOD_EEEMC = 40, /* Ezonics EZ-802 EZMega Cam */
W9968CF_MOD_OOE = 42, /* OmniVision OV8610-EDE */
W9968CF_MOD_ODPVDMPC = 43,/* OPCOM Digi Pen VGA Dual Mode Pen Camera */
W9968CF_MOD_PDPII = 46, /* Pretec Digi Pen-II */
W9968CF_MOD_PDP480 = 49, /* Pretec DigiPen-480 */
};
enum w9968cf_frame_status {
F_READY, /* finished grabbing & ready to be read/synced */
F_GRABBING, /* in the process of being grabbed into */
F_ERROR, /* something bad happened while processing */
F_UNUSED /* unused (no VIDIOCMCAPTURE) */
};
struct w9968cf_frame_t {
void* buffer;
unsigned long size;
u32 length;
int number;
enum w9968cf_frame_status status;
struct w9968cf_frame_t* next;
u8 queued;
};
enum w9968cf_vpp_flag {
VPP_NONE = 0x00,
VPP_UPSCALE = 0x01,
VPP_SWAP_YUV_BYTES = 0x02,
VPP_DECOMPRESSION = 0x04,
VPP_UYVY_TO_RGBX = 0x08,
};
/* Main device driver structure */
struct w9968cf_device {
enum w9968cf_model_id id; /* private device identifier */
struct v4l2_device v4l2_dev;
struct video_device* v4ldev; /* -> V4L structure */
struct list_head v4llist; /* entry of the list of V4L cameras */
struct usb_device* usbdev; /* -> main USB structure */
struct urb* urb[W9968CF_URBS]; /* -> USB request block structs */
void* transfer_buffer[W9968CF_URBS]; /* -> ISO transfer buffers */
u16* control_buffer; /* -> buffer for control req.*/
u16* data_buffer; /* -> data to send to the FSB */
struct w9968cf_frame_t frame[W9968CF_MAX_BUFFERS];
struct w9968cf_frame_t frame_tmp; /* temporary frame */
struct w9968cf_frame_t frame_vpp; /* helper frame.*/
struct w9968cf_frame_t* frame_current; /* -> frame being grabbed */
struct w9968cf_frame_t* requested_frame[W9968CF_MAX_BUFFERS];
u8 max_buffers, /* number of requested buffers */
force_palette, /* yes=1/no=0 */
force_rgb, /* read RGB instead of BGR, yes=1, no=0 */
double_buffer, /* hardware double buffering yes=1/no=0 */
clamping, /* video data clamping yes=1/no=0 */
filter_type, /* 0=disabled, 1=3 tap, 2=5 tap filter */
capture, /* 0=disabled, 1=enabled */
largeview, /* 0=disabled, 1=enabled */
decompression, /* 0=disabled, 1=forced, 2=allowed */
upscaling; /* software image scaling, 0=enabled, 1=disabled */
struct video_picture picture; /* current picture settings */
struct video_window window; /* current window settings */
u16 hw_depth, /* depth (used by the chip) */
hw_palette, /* palette (used by the chip) */
hw_width, /* width (used by the chip) */
hw_height, /* height (used by the chip) */
hs_polarity, /* 0=negative sync pulse, 1=positive sync pulse */
vs_polarity, /* 0=negative sync pulse, 1=positive sync pulse */
start_cropx, /* pixels from HS inactive edge to 1st cropped pixel*/
start_cropy; /* pixels from VS inactive edge to 1st cropped pixel*/
enum w9968cf_vpp_flag vpp_flag; /* post-processing routines in use */
u8 nbuffers, /* number of allocated frame buffers */
altsetting, /* camera alternate setting */
disconnected, /* flag: yes=1, no=0 */
misconfigured, /* flag: yes=1, no=0 */
users, /* flag: number of users holding the device */
streaming; /* flag: yes=1, no=0 */
u8 sensor_initialized; /* flag: yes=1, no=0 */
/* Determined by the image sensor type: */
int sensor, /* type of image sensor chip (CC_*) */
monochrome; /* image sensor is (probably) monochrome */
u16 maxwidth, /* maximum width supported by the image sensor */
maxheight, /* maximum height supported by the image sensor */
minwidth, /* minimum width supported by the image sensor */
minheight; /* minimum height supported by the image sensor */
u8 auto_brt, /* auto brightness enabled flag */
auto_exp, /* auto exposure enabled flag */
backlight, /* backlight exposure algorithm flag */
mirror, /* image is reversed horizontally */
lightfreq, /* power (lighting) frequency */
bandfilt; /* banding filter enabled flag */
s8 clockdiv; /* clock divisor */
/* I2C interface to kernel */
struct i2c_adapter i2c_adapter;
struct v4l2_subdev *sensor_sd;
/* Locks */
struct mutex dev_mutex, /* for probe, disconnect,open and close */
fileop_mutex; /* for read and ioctl */
spinlock_t urb_lock, /* for submit_urb() and unlink_urb() */
flist_lock; /* for requested frame list accesses */
wait_queue_head_t open, wait_queue;
char command[16]; /* name of the program holding the device */
};
static inline struct w9968cf_device *to_cam(struct v4l2_device *v4l2_dev)
{
return container_of(v4l2_dev, struct w9968cf_device, v4l2_dev);
}
/****************************************************************************
* Macros for debugging *
****************************************************************************/
#undef DBG
#undef KDBG
#ifdef W9968CF_DEBUG
/* For device specific debugging messages */
# define DBG(level, fmt, args...) \
{ \
if ( ((specific_debug) && (debug == (level))) || \
((!specific_debug) && (debug >= (level))) ) { \
if ((level) == 1) \
v4l2_err(&cam->v4l2_dev, fmt "\n", ## args); \
else if ((level) == 2 || (level) == 3) \
v4l2_info(&cam->v4l2_dev, fmt "\n", ## args); \
else if ((level) == 4) \
v4l2_warn(&cam->v4l2_dev, fmt "\n", ## args); \
else if ((level) >= 5) \
v4l2_info(&cam->v4l2_dev, "[%s:%d] " fmt "\n", \
__func__, __LINE__ , ## args); \
} \
}
/* For generic kernel (not device specific) messages */
# define KDBG(level, fmt, args...) \
{ \
if ( ((specific_debug) && (debug == (level))) || \
((!specific_debug) && (debug >= (level))) ) { \
if ((level) >= 1 && (level) <= 4) \
pr_info("w9968cf: " fmt "\n", ## args); \
else if ((level) >= 5) \
pr_debug("w9968cf: [%s:%d] " fmt "\n", __func__, \
__LINE__ , ## args); \
} \
}
#else
/* Not debugging: nothing */
# define DBG(level, fmt, args...) do {;} while(0);
# define KDBG(level, fmt, args...) do {;} while(0);
#endif
#undef PDBG
#define PDBG(fmt, args...) \
v4l2_info(&cam->v4l2_dev, "[%s:%d] " fmt "\n", __func__, __LINE__ , ## args);
#undef PDBGG
#define PDBGG(fmt, args...) do {;} while(0); /* nothing: it's a placeholder */
#endif /* _W9968CF_H_ */
|
