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
|
/*
* Support for the sensor part which is integrated (I think) into the
* st6422 stv06xx alike bridge, as its integrated there are no i2c writes
* but instead direct bridge writes.
*
* Copyright (c) 2009 Hans de Goede <hdegoede@redhat.com>
*
* Strongly based on qc-usb-messenger, which is:
* Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher
* Mark Cave-Ayland, Carlo E Prelz, Dick Streefland
* Copyright (c) 2002, 2003 Tuukka Toivonen
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include "stv06xx_st6422.h"
static struct v4l2_pix_format st6422_mode[] = {
/* Note we actually get 124 lines of data, of which we skip the 4st
4 as they are garbage */
{
162,
120,
V4L2_PIX_FMT_SGRBG8,
V4L2_FIELD_NONE,
.sizeimage = 162 * 120,
.bytesperline = 162,
.colorspace = V4L2_COLORSPACE_SRGB,
.priv = 1
},
/* Note we actually get 248 lines of data, of which we skip the 4st
4 as they are garbage, and we tell the app it only gets the
first 240 of the 244 lines it actually gets, so that it ignores
the last 4. */
{
324,
240,
V4L2_PIX_FMT_SGRBG8,
V4L2_FIELD_NONE,
.sizeimage = 324 * 244,
.bytesperline = 324,
.colorspace = V4L2_COLORSPACE_SRGB,
.priv = 0
},
};
/* V4L2 controls supported by the driver */
static int setbrightness(struct sd *sd, s32 val);
static int setcontrast(struct sd *sd, s32 val);
static int setgain(struct sd *sd, u8 gain);
static int setexposure(struct sd *sd, s16 expo);
static int st6422_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct gspca_dev *gspca_dev =
container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
struct sd *sd = (struct sd *)gspca_dev;
int err = -EINVAL;
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
err = setbrightness(sd, ctrl->val);
break;
case V4L2_CID_CONTRAST:
err = setcontrast(sd, ctrl->val);
break;
case V4L2_CID_GAIN:
err = setgain(sd, ctrl->val);
break;
case V4L2_CID_EXPOSURE:
err = setexposure(sd, ctrl->val);
break;
}
/* commit settings */
if (err >= 0)
err = stv06xx_write_bridge(sd, 0x143f, 0x01);
sd->gspca_dev.usb_err = err;
return err;
}
static const struct v4l2_ctrl_ops st6422_ctrl_ops = {
.s_ctrl = st6422_s_ctrl,
};
static int st6422_init_controls(struct sd *sd)
{
struct v4l2_ctrl_handler *hdl = &sd->gspca_dev.ctrl_handler;
v4l2_ctrl_handler_init(hdl, 4);
v4l2_ctrl_new_std(hdl, &st6422_ctrl_ops,
V4L2_CID_BRIGHTNESS, 0, 31, 1, 3);
v4l2_ctrl_new_std(hdl, &st6422_ctrl_ops,
V4L2_CID_CONTRAST, 0, 15, 1, 11);
v4l2_ctrl_new_std(hdl, &st6422_ctrl_ops,
V4L2_CID_EXPOSURE, 0, 1023, 1, 256);
v4l2_ctrl_new_std(hdl, &st6422_ctrl_ops,
V4L2_CID_GAIN, 0, 255, 1, 64);
return hdl->error;
}
static int st6422_probe(struct sd *sd)
{
if (sd->bridge != BRIDGE_ST6422)
return -ENODEV;
pr_info("st6422 sensor detected\n");
sd->gspca_dev.cam.cam_mode = st6422_mode;
sd->gspca_dev.cam.nmodes = ARRAY_SIZE(st6422_mode);
return 0;
}
static int st6422_init(struct sd *sd)
{
int err = 0, i;
const u16 st6422_bridge_init[][2] = {
{ STV_ISO_ENABLE, 0x00 }, /* disable capture */
{ 0x1436, 0x00 },
{ 0x1432, 0x03 }, /* 0x00-0x1F brightness */
{ 0x143a, 0xf9 }, /* 0x00-0x0F contrast */
{ 0x0509, 0x38 }, /* R */
{ 0x050a, 0x38 }, /* G */
{ 0x050b, 0x38 }, /* B */
{ 0x050c, 0x2a },
{ 0x050d, 0x01 },
{ 0x1431, 0x00 }, /* 0x00-0x07 ??? */
{ 0x1433, 0x34 }, /* 160x120, 0x00-0x01 night filter */
{ 0x1438, 0x18 }, /* 640x480 */
/* 18 bayes */
/* 10 compressed? */
{ 0x1439, 0x00 },
/* anti-noise? 0xa2 gives a perfect image */
{ 0x143b, 0x05 },
{ 0x143c, 0x00 }, /* 0x00-0x01 - ??? */
/* shutter time 0x0000-0x03FF */
/* low value give good picures on moving objects (but requires much light) */
/* high value gives good picures in darkness (but tends to be overexposed) */
{ 0x143e, 0x01 },
{ 0x143d, 0x00 },
{ 0x1442, 0xe2 },
/* write: 1x1x xxxx */
/* read: 1x1x xxxx */
/* bit 5 == button pressed and hold if 0 */
/* write 0xe2,0xea */
/* 0x144a */
/* 0x00 init */
/* bit 7 == button has been pressed, but not handled */
/* interrupt */
/* if(urb->iso_frame_desc[i].status == 0x80) { */
/* if(urb->iso_frame_desc[i].status == 0x88) { */
{ 0x1500, 0xd0 },
{ 0x1500, 0xd0 },
{ 0x1500, 0x50 }, /* 0x00 - 0xFF 0x80 == compr ? */
{ 0x1501, 0xaf },
/* high val-> light area gets darker */
/* low val -> light area gets lighter */
{ 0x1502, 0xc2 },
/* high val-> light area gets darker */
/* low val -> light area gets lighter */
{ 0x1503, 0x45 },
/* high val-> light area gets darker */
/* low val -> light area gets lighter */
{ 0x1505, 0x02 },
/* 2 : 324x248 80352 bytes */
/* 7 : 248x162 40176 bytes */
/* c+f: 162*124 20088 bytes */
{ 0x150e, 0x8e },
{ 0x150f, 0x37 },
{ 0x15c0, 0x00 },
{ 0x15c3, 0x08 }, /* 0x04/0x14 ... test pictures ??? */
{ 0x143f, 0x01 }, /* commit settings */
};
for (i = 0; i < ARRAY_SIZE(st6422_bridge_init) && !err; i++) {
err = stv06xx_write_bridge(sd, st6422_bridge_init[i][0],
st6422_bridge_init[i][1]);
}
return err;
}
static int setbrightness(struct sd *sd, s32 val)
{
/* val goes from 0 -> 31 */
return stv06xx_write_bridge(sd, 0x1432, val);
}
static int setcontrast(struct sd *sd, s32 val)
{
/* Val goes from 0 -> 15 */
return stv06xx_write_bridge(sd, 0x143a, val | 0xf0);
}
static int setgain(struct sd *sd, u8 gain)
{
int err;
/* Set red, green, blue, gain */
err = stv06xx_write_bridge(sd, 0x0509, gain);
if (err < 0)
return err;
err = stv06xx_write_bridge(sd, 0x050a, gain);
if (err < 0)
return err;
err = stv06xx_write_bridge(sd, 0x050b, gain);
if (err < 0)
return err;
/* 2 mystery writes */
err = stv06xx_write_bridge(sd, 0x050c, 0x2a);
if (err < 0)
return err;
return stv06xx_write_bridge(sd, 0x050d, 0x01);
}
static int setexposure(struct sd *sd, s16 expo)
{
int err;
err = stv06xx_write_bridge(sd, 0x143d, expo & 0xff);
if (err < 0)
return err;
return stv06xx_write_bridge(sd, 0x143e, expo >> 8);
}
static int st6422_start(struct sd *sd)
{
int err;
struct cam *cam = &sd->gspca_dev.cam;
if (cam->cam_mode[sd->gspca_dev.curr_mode].priv)
err = stv06xx_write_bridge(sd, 0x1505, 0x0f);
else
err = stv06xx_write_bridge(sd, 0x1505, 0x02);
if (err < 0)
return err;
/* commit settings */
err = stv06xx_write_bridge(sd, 0x143f, 0x01);
return (err < 0) ? err : 0;
}
static int st6422_stop(struct sd *sd)
{
PDEBUG(D_STREAM, "Halting stream");
return 0;
}
|
