2 * Support for the sensor part which is integrated (I think) into the
3 * st6422 stv06xx alike bridge, as its integrated there are no i2c writes
4 * but instead direct bridge writes.
6 * Copyright (c) 2009 Hans de Goede <hdegoede@redhat.com>
8 * Strongly based on qc-usb-messenger, which is:
9 * Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher
10 * Mark Cave-Ayland, Carlo E Prelz, Dick Streefland
11 * Copyright (c) 2002, 2003 Tuukka Toivonen
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
29 #include "stv06xx_st6422.h"
31 static struct v4l2_pix_format st6422_mode[] = {
32 /* Note we actually get 124 lines of data, of which we skip the 4st
33 4 as they are garbage */
39 .sizeimage = 162 * 120,
41 .colorspace = V4L2_COLORSPACE_SRGB,
44 /* Note we actually get 248 lines of data, of which we skip the 4st
45 4 as they are garbage, and we tell the app it only gets the
46 first 240 of the 244 lines it actually gets, so that it ignores
53 .sizeimage = 324 * 244,
55 .colorspace = V4L2_COLORSPACE_SRGB,
60 static const struct ctrl st6422_ctrl[] = {
61 #define BRIGHTNESS_IDX 0
64 .id = V4L2_CID_BRIGHTNESS,
65 .type = V4L2_CTRL_TYPE_INTEGER,
72 .set = st6422_set_brightness,
73 .get = st6422_get_brightness
75 #define CONTRAST_IDX 1
78 .id = V4L2_CID_CONTRAST,
79 .type = V4L2_CTRL_TYPE_INTEGER,
86 .set = st6422_set_contrast,
87 .get = st6422_get_contrast
93 .type = V4L2_CTRL_TYPE_INTEGER,
100 .set = st6422_set_gain,
101 .get = st6422_get_gain
103 #define EXPOSURE_IDX 3
106 .id = V4L2_CID_EXPOSURE,
107 .type = V4L2_CTRL_TYPE_INTEGER,
114 .set = st6422_set_exposure,
115 .get = st6422_get_exposure
119 static int st6422_probe(struct sd *sd)
122 s32 *sensor_settings;
124 if (sd->bridge != BRIDGE_ST6422)
127 info("st6422 sensor detected");
129 sensor_settings = kmalloc(ARRAY_SIZE(st6422_ctrl) * sizeof(s32),
131 if (!sensor_settings)
134 sd->gspca_dev.cam.cam_mode = st6422_mode;
135 sd->gspca_dev.cam.nmodes = ARRAY_SIZE(st6422_mode);
136 sd->desc.ctrls = st6422_ctrl;
137 sd->desc.nctrls = ARRAY_SIZE(st6422_ctrl);
138 sd->sensor_priv = sensor_settings;
140 for (i = 0; i < sd->desc.nctrls; i++)
141 sensor_settings[i] = st6422_ctrl[i].qctrl.default_value;
146 static int st6422_init(struct sd *sd)
150 const u16 st6422_bridge_init[][2] = {
151 { STV_ISO_ENABLE, 0x00 }, /* disable capture */
153 { 0x1432, 0x03 }, /* 0x00-0x1F brightness */
154 { 0x143a, 0xf9 }, /* 0x00-0x0F contrast */
155 { 0x0509, 0x38 }, /* R */
156 { 0x050a, 0x38 }, /* G */
157 { 0x050b, 0x38 }, /* B */
162 { 0x1431, 0x00 }, /* 0x00-0x07 ??? */
163 { 0x1433, 0x34 }, /* 160x120, 0x00-0x01 night filter */
164 { 0x1438, 0x18 }, /* 640x480 */
169 /* anti-noise? 0xa2 gives a perfect image */
172 { 0x143c, 0x00 }, /* 0x00-0x01 - ??? */
175 /* shutter time 0x0000-0x03FF */
176 /* low value give good picures on moving objects (but requires much light) */
177 /* high value gives good picures in darkness (but tends to be overexposed) */
182 /* write: 1x1x xxxx */
183 /* read: 1x1x xxxx */
184 /* bit 5 == button pressed and hold if 0 */
185 /* write 0xe2,0xea */
189 /* bit 7 == button has been pressed, but not handled */
192 /* if(urb->iso_frame_desc[i].status == 0x80) { */
193 /* if(urb->iso_frame_desc[i].status == 0x88) { */
197 { 0x1500, 0x50 }, /* 0x00 - 0xFF 0x80 == compr ? */
200 /* high val-> light area gets darker */
201 /* low val -> light area gets lighter */
203 /* high val-> light area gets darker */
204 /* low val -> light area gets lighter */
206 /* high val-> light area gets darker */
207 /* low val -> light area gets lighter */
209 /* 2 : 324x248 80352 bytes */
210 /* 7 : 248x162 40176 bytes */
211 /* c+f: 162*124 20088 bytes */
216 { 0x15c3, 0x08 }, /* 0x04/0x14 ... test pictures ??? */
219 { 0x143f, 0x01 }, /* commit settings */
223 for (i = 0; i < ARRAY_SIZE(st6422_bridge_init) && !err; i++) {
224 err = stv06xx_write_bridge(sd, st6422_bridge_init[i][0],
225 st6422_bridge_init[i][1]);
231 static void st6422_disconnect(struct sd *sd)
234 kfree(sd->sensor_priv);
237 static int st6422_start(struct sd *sd)
240 struct cam *cam = &sd->gspca_dev.cam;
241 s32 *sensor_settings = sd->sensor_priv;
243 if (cam->cam_mode[sd->gspca_dev.curr_mode].priv)
244 err = stv06xx_write_bridge(sd, 0x1505, 0x0f);
246 err = stv06xx_write_bridge(sd, 0x1505, 0x02);
250 err = st6422_set_brightness(&sd->gspca_dev,
251 sensor_settings[BRIGHTNESS_IDX]);
255 err = st6422_set_contrast(&sd->gspca_dev,
256 sensor_settings[CONTRAST_IDX]);
260 err = st6422_set_exposure(&sd->gspca_dev,
261 sensor_settings[EXPOSURE_IDX]);
265 err = st6422_set_gain(&sd->gspca_dev,
266 sensor_settings[GAIN_IDX]);
270 PDEBUG(D_STREAM, "Starting stream");
275 static int st6422_stop(struct sd *sd)
277 PDEBUG(D_STREAM, "Halting stream");
282 static int st6422_get_brightness(struct gspca_dev *gspca_dev, __s32 *val)
284 struct sd *sd = (struct sd *) gspca_dev;
285 s32 *sensor_settings = sd->sensor_priv;
287 *val = sensor_settings[BRIGHTNESS_IDX];
289 PDEBUG(D_V4L2, "Read brightness %d", *val);
294 static int st6422_set_brightness(struct gspca_dev *gspca_dev, __s32 val)
297 struct sd *sd = (struct sd *) gspca_dev;
298 s32 *sensor_settings = sd->sensor_priv;
300 sensor_settings[BRIGHTNESS_IDX] = val;
302 if (!gspca_dev->streaming)
305 /* val goes from 0 -> 31 */
306 PDEBUG(D_V4L2, "Set brightness to %d", val);
307 err = stv06xx_write_bridge(sd, 0x1432, val);
311 /* commit settings */
312 err = stv06xx_write_bridge(sd, 0x143f, 0x01);
313 return (err < 0) ? err : 0;
316 static int st6422_get_contrast(struct gspca_dev *gspca_dev, __s32 *val)
318 struct sd *sd = (struct sd *) gspca_dev;
319 s32 *sensor_settings = sd->sensor_priv;
321 *val = sensor_settings[CONTRAST_IDX];
323 PDEBUG(D_V4L2, "Read contrast %d", *val);
328 static int st6422_set_contrast(struct gspca_dev *gspca_dev, __s32 val)
331 struct sd *sd = (struct sd *) gspca_dev;
332 s32 *sensor_settings = sd->sensor_priv;
334 sensor_settings[CONTRAST_IDX] = val;
336 if (!gspca_dev->streaming)
339 /* Val goes from 0 -> 15 */
340 PDEBUG(D_V4L2, "Set contrast to %d\n", val);
341 err = stv06xx_write_bridge(sd, 0x143a, 0xf0 | val);
345 /* commit settings */
346 err = stv06xx_write_bridge(sd, 0x143f, 0x01);
347 return (err < 0) ? err : 0;
350 static int st6422_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
352 struct sd *sd = (struct sd *) gspca_dev;
353 s32 *sensor_settings = sd->sensor_priv;
355 *val = sensor_settings[GAIN_IDX];
357 PDEBUG(D_V4L2, "Read gain %d", *val);
362 static int st6422_set_gain(struct gspca_dev *gspca_dev, __s32 val)
365 struct sd *sd = (struct sd *) gspca_dev;
366 s32 *sensor_settings = sd->sensor_priv;
368 sensor_settings[GAIN_IDX] = val;
370 if (!gspca_dev->streaming)
373 PDEBUG(D_V4L2, "Set gain to %d", val);
375 /* Set red, green, blue, gain */
376 err = stv06xx_write_bridge(sd, 0x0509, val);
380 err = stv06xx_write_bridge(sd, 0x050a, val);
384 err = stv06xx_write_bridge(sd, 0x050b, val);
388 /* 2 mystery writes */
389 err = stv06xx_write_bridge(sd, 0x050c, 0x2a);
393 err = stv06xx_write_bridge(sd, 0x050d, 0x01);
397 /* commit settings */
398 err = stv06xx_write_bridge(sd, 0x143f, 0x01);
399 return (err < 0) ? err : 0;
402 static int st6422_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
404 struct sd *sd = (struct sd *) gspca_dev;
405 s32 *sensor_settings = sd->sensor_priv;
407 *val = sensor_settings[EXPOSURE_IDX];
409 PDEBUG(D_V4L2, "Read exposure %d", *val);
414 static int st6422_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
417 struct sd *sd = (struct sd *) gspca_dev;
418 s32 *sensor_settings = sd->sensor_priv;
420 sensor_settings[EXPOSURE_IDX] = val;
422 if (!gspca_dev->streaming)
425 PDEBUG(D_V4L2, "Set exposure to %d\n", val);
426 err = stv06xx_write_bridge(sd, 0x143d, val & 0xff);
430 err = stv06xx_write_bridge(sd, 0x143e, val >> 8);
434 /* commit settings */
435 err = stv06xx_write_bridge(sd, 0x143f, 0x01);
436 return (err < 0) ? err : 0;