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 /* antiflimmer?? 0xa2 ger perfekt bild mot monitor */
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-> ljus area blir morkare. */
201 /* low val -> ljus area blir ljusare. */
203 /* high val-> ljus area blir morkare. */
204 /* low val -> ljus area blir ljusare. */
206 /* high val-> ljus area blir morkare. */
207 /* low val -> ljus area blir ljusare. */
210 /* 2 : 324x248 80352 bytes */
211 /* 7 : 248x162 40176 bytes */
212 /* c+f: 162*124 20088 bytes */
217 { 0x15c1, 1023 }, /* 160x120, ISOC_PACKET_SIZE */
218 { 0x15c3, 0x08 }, /* 0x04/0x14 ... test pictures ??? */
221 { 0x143f, 0x01 }, /* commit settings */
225 for (i = 0; i < ARRAY_SIZE(st6422_bridge_init) && !err; i++) {
226 err = stv06xx_write_bridge(sd, st6422_bridge_init[i][0],
227 st6422_bridge_init[i][1]);
233 static void st6422_disconnect(struct sd *sd)
236 kfree(sd->sensor_priv);
239 static int st6422_start(struct sd *sd)
241 int err, packet_size;
242 struct cam *cam = &sd->gspca_dev.cam;
243 s32 *sensor_settings = sd->sensor_priv;
244 struct usb_host_interface *alt;
245 struct usb_interface *intf;
247 intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface);
248 alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt);
250 PDEBUG(D_ERR, "Couldn't get altsetting");
254 packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
255 err = stv06xx_write_bridge(sd, 0x15c1, packet_size);
259 if (cam->cam_mode[sd->gspca_dev.curr_mode].priv)
260 err = stv06xx_write_bridge(sd, 0x1505, 0x0f);
262 err = stv06xx_write_bridge(sd, 0x1505, 0x02);
266 err = st6422_set_brightness(&sd->gspca_dev,
267 sensor_settings[BRIGHTNESS_IDX]);
271 err = st6422_set_contrast(&sd->gspca_dev,
272 sensor_settings[CONTRAST_IDX]);
276 err = st6422_set_exposure(&sd->gspca_dev,
277 sensor_settings[EXPOSURE_IDX]);
281 err = st6422_set_gain(&sd->gspca_dev,
282 sensor_settings[GAIN_IDX]);
286 PDEBUG(D_STREAM, "Starting stream");
291 static int st6422_stop(struct sd *sd)
293 PDEBUG(D_STREAM, "Halting stream");
298 static int st6422_get_brightness(struct gspca_dev *gspca_dev, __s32 *val)
300 struct sd *sd = (struct sd *) gspca_dev;
301 s32 *sensor_settings = sd->sensor_priv;
303 *val = sensor_settings[BRIGHTNESS_IDX];
305 PDEBUG(D_V4L2, "Read brightness %d", *val);
310 static int st6422_set_brightness(struct gspca_dev *gspca_dev, __s32 val)
313 struct sd *sd = (struct sd *) gspca_dev;
314 s32 *sensor_settings = sd->sensor_priv;
316 sensor_settings[BRIGHTNESS_IDX] = val;
318 if (!gspca_dev->streaming)
321 /* val goes from 0 -> 31 */
322 PDEBUG(D_V4L2, "Set brightness to %d", val);
323 err = stv06xx_write_bridge(sd, 0x1432, val);
327 /* commit settings */
328 err = stv06xx_write_bridge(sd, 0x143f, 0x01);
329 return (err < 0) ? err : 0;
332 static int st6422_get_contrast(struct gspca_dev *gspca_dev, __s32 *val)
334 struct sd *sd = (struct sd *) gspca_dev;
335 s32 *sensor_settings = sd->sensor_priv;
337 *val = sensor_settings[CONTRAST_IDX];
339 PDEBUG(D_V4L2, "Read contrast %d", *val);
344 static int st6422_set_contrast(struct gspca_dev *gspca_dev, __s32 val)
347 struct sd *sd = (struct sd *) gspca_dev;
348 s32 *sensor_settings = sd->sensor_priv;
350 sensor_settings[CONTRAST_IDX] = val;
352 if (!gspca_dev->streaming)
355 /* Val goes from 0 -> 15 */
356 PDEBUG(D_V4L2, "Set contrast to %d\n", val);
357 err = stv06xx_write_bridge(sd, 0x143a, 0xf0 | val);
361 /* commit settings */
362 err = stv06xx_write_bridge(sd, 0x143f, 0x01);
363 return (err < 0) ? err : 0;
366 static int st6422_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
368 struct sd *sd = (struct sd *) gspca_dev;
369 s32 *sensor_settings = sd->sensor_priv;
371 *val = sensor_settings[GAIN_IDX];
373 PDEBUG(D_V4L2, "Read gain %d", *val);
378 static int st6422_set_gain(struct gspca_dev *gspca_dev, __s32 val)
381 struct sd *sd = (struct sd *) gspca_dev;
382 s32 *sensor_settings = sd->sensor_priv;
384 sensor_settings[GAIN_IDX] = val;
386 if (!gspca_dev->streaming)
389 PDEBUG(D_V4L2, "Set gain to %d", val);
391 /* Set red, green, blue, gain */
392 err = stv06xx_write_bridge(sd, 0x0509, val);
396 err = stv06xx_write_bridge(sd, 0x050a, val);
400 err = stv06xx_write_bridge(sd, 0x050b, val);
404 /* 2 mystery writes */
405 err = stv06xx_write_bridge(sd, 0x050c, 0x2a);
409 err = stv06xx_write_bridge(sd, 0x050d, 0x01);
413 /* commit settings */
414 err = stv06xx_write_bridge(sd, 0x143f, 0x01);
415 return (err < 0) ? err : 0;
418 static int st6422_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
420 struct sd *sd = (struct sd *) gspca_dev;
421 s32 *sensor_settings = sd->sensor_priv;
423 *val = sensor_settings[EXPOSURE_IDX];
425 PDEBUG(D_V4L2, "Read exposure %d", *val);
430 static int st6422_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
433 struct sd *sd = (struct sd *) gspca_dev;
434 s32 *sensor_settings = sd->sensor_priv;
436 sensor_settings[EXPOSURE_IDX] = val;
438 if (!gspca_dev->streaming)
441 PDEBUG(D_V4L2, "Set exposure to %d\n", val);
442 err = stv06xx_write_bridge(sd, 0x143d, val & 0xff);
446 err = stv06xx_write_bridge(sd, 0x143e, val >> 8);
450 /* commit settings */
451 err = stv06xx_write_bridge(sd, 0x143f, 0x01);
452 return (err < 0) ? err : 0;