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[pohmelfs.git] / drivers / media / video / gspca / stv06xx / stv06xx_pb0100.c
blob26f14fc4a135eec6991deb85f2d72e8d6acd682e
1 /*
2 * Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher
3 * Mark Cave-Ayland, Carlo E Prelz, Dick Streefland
4 * Copyright (c) 2002, 2003 Tuukka Toivonen
5 * Copyright (c) 2008 Erik Andrén
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 * P/N 861037: Sensor HDCS1000 ASIC STV0600
22 * P/N 861050-0010: Sensor HDCS1000 ASIC STV0600
23 * P/N 861050-0020: Sensor Photobit PB100 ASIC STV0600-1 - QuickCam Express
24 * P/N 861055: Sensor ST VV6410 ASIC STV0610 - LEGO cam
25 * P/N 861075-0040: Sensor HDCS1000 ASIC
26 * P/N 961179-0700: Sensor ST VV6410 ASIC STV0602 - Dexxa WebCam USB
27 * P/N 861040-0000: Sensor ST VV6410 ASIC STV0610 - QuickCam Web
28 */
29
30 /*
31 * The spec file for the PB-0100 suggests the following for best quality
32 * images after the sensor has been reset :
33 *
34 * PB_ADCGAINL = R60 = 0x03 (3 dec) : sets low reference of ADC
35 to produce good black level
36 * PB_PREADCTRL = R32 = 0x1400 (5120 dec) : Enables global gain changes
37 through R53
38 * PB_ADCMINGAIN = R52 = 0x10 (16 dec) : Sets the minimum gain for
39 auto-exposure
40 * PB_ADCGLOBALGAIN = R53 = 0x10 (16 dec) : Sets the global gain
41 * PB_EXPGAIN = R14 = 0x11 (17 dec) : Sets the auto-exposure value
42 * PB_UPDATEINT = R23 = 0x02 (2 dec) : Sets the speed on
43 auto-exposure routine
44 * PB_CFILLIN = R5 = 0x0E (14 dec) : Sets the frame rate
45 */
46
47 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
48
49 #include "stv06xx_pb0100.h"
50
51 static const struct ctrl pb0100_ctrl[] = {
52 #define GAIN_IDX 0
53 {
54 {
55 .id = V4L2_CID_GAIN,
56 .type = V4L2_CTRL_TYPE_INTEGER,
57 .name = "Gain",
58 .minimum = 0,
59 .maximum = 255,
60 .step = 1,
61 .default_value = 128
62 },
63 .set = pb0100_set_gain,
64 .get = pb0100_get_gain
65 },
66 #define RED_BALANCE_IDX 1
67 {
68 {
69 .id = V4L2_CID_RED_BALANCE,
70 .type = V4L2_CTRL_TYPE_INTEGER,
71 .name = "Red Balance",
72 .minimum = -255,
73 .maximum = 255,
74 .step = 1,
75 .default_value = 0
76 },
77 .set = pb0100_set_red_balance,
78 .get = pb0100_get_red_balance
79 },
80 #define BLUE_BALANCE_IDX 2
81 {
82 {
83 .id = V4L2_CID_BLUE_BALANCE,
84 .type = V4L2_CTRL_TYPE_INTEGER,
85 .name = "Blue Balance",
86 .minimum = -255,
87 .maximum = 255,
88 .step = 1,
89 .default_value = 0
90 },
91 .set = pb0100_set_blue_balance,
92 .get = pb0100_get_blue_balance
93 },
94 #define EXPOSURE_IDX 3
95 {
96 {
97 .id = V4L2_CID_EXPOSURE,
98 .type = V4L2_CTRL_TYPE_INTEGER,
99 .name = "Exposure",
100 .minimum = 0,
101 .maximum = 511,
102 .step = 1,
103 .default_value = 12
104 },
105 .set = pb0100_set_exposure,
106 .get = pb0100_get_exposure
107 },
108 #define AUTOGAIN_IDX 4
109 {
110 {
111 .id = V4L2_CID_AUTOGAIN,
112 .type = V4L2_CTRL_TYPE_BOOLEAN,
113 .name = "Automatic Gain and Exposure",
114 .minimum = 0,
115 .maximum = 1,
116 .step = 1,
117 .default_value = 1
118 },
119 .set = pb0100_set_autogain,
120 .get = pb0100_get_autogain
121 },
122 #define AUTOGAIN_TARGET_IDX 5
123 {
124 {
125 .id = V4L2_CTRL_CLASS_USER + 0x1000,
126 .type = V4L2_CTRL_TYPE_INTEGER,
127 .name = "Automatic Gain Target",
128 .minimum = 0,
129 .maximum = 255,
130 .step = 1,
131 .default_value = 128
132 },
133 .set = pb0100_set_autogain_target,
134 .get = pb0100_get_autogain_target
135 },
136 #define NATURAL_IDX 6
137 {
138 {
139 .id = V4L2_CTRL_CLASS_USER + 0x1001,
140 .type = V4L2_CTRL_TYPE_BOOLEAN,
141 .name = "Natural Light Source",
142 .minimum = 0,
143 .maximum = 1,
144 .step = 1,
145 .default_value = 1
146 },
147 .set = pb0100_set_natural,
148 .get = pb0100_get_natural
149 }
150 };
151
152 static struct v4l2_pix_format pb0100_mode[] = {
153 /* low res / subsample modes disabled as they are only half res horizontal,
154 halving the vertical resolution does not seem to work */
155 {
156 320,
157 240,
158 V4L2_PIX_FMT_SGRBG8,
159 V4L2_FIELD_NONE,
160 .sizeimage = 320 * 240,
161 .bytesperline = 320,
162 .colorspace = V4L2_COLORSPACE_SRGB,
163 .priv = PB0100_CROP_TO_VGA
164 },
165 {
166 352,
167 288,
168 V4L2_PIX_FMT_SGRBG8,
169 V4L2_FIELD_NONE,
170 .sizeimage = 352 * 288,
171 .bytesperline = 352,
172 .colorspace = V4L2_COLORSPACE_SRGB,
173 .priv = 0
174 }
175 };
176
177 static int pb0100_probe(struct sd *sd)
178 {
179 u16 sensor;
180 int i, err;
181 s32 *sensor_settings;
182
183 err = stv06xx_read_sensor(sd, PB_IDENT, &sensor);
184
185 if (err < 0)
186 return -ENODEV;
187
188 if ((sensor >> 8) == 0x64) {
189 sensor_settings = kmalloc(
190 ARRAY_SIZE(pb0100_ctrl) * sizeof(s32),
191 GFP_KERNEL);
192 if (!sensor_settings)
193 return -ENOMEM;
194
195 pr_info("Photobit pb0100 sensor detected\n");
196
197 sd->gspca_dev.cam.cam_mode = pb0100_mode;
198 sd->gspca_dev.cam.nmodes = ARRAY_SIZE(pb0100_mode);
199 sd->desc.ctrls = pb0100_ctrl;
200 sd->desc.nctrls = ARRAY_SIZE(pb0100_ctrl);
201 for (i = 0; i < sd->desc.nctrls; i++)
202 sensor_settings[i] = pb0100_ctrl[i].qctrl.default_value;
203 sd->sensor_priv = sensor_settings;
204
205 return 0;
206 }
207
208 return -ENODEV;
209 }
210
211 static int pb0100_start(struct sd *sd)
212 {
213 int err, packet_size, max_packet_size;
214 struct usb_host_interface *alt;
215 struct usb_interface *intf;
216 struct cam *cam = &sd->gspca_dev.cam;
217 s32 *sensor_settings = sd->sensor_priv;
218 u32 mode = cam->cam_mode[sd->gspca_dev.curr_mode].priv;
219
220 intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface);
221 alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt);
222 if (!alt)
223 return -ENODEV;
224 packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
225
226 /* If we don't have enough bandwidth use a lower framerate */
227 max_packet_size = sd->sensor->max_packet_size[sd->gspca_dev.curr_mode];
228 if (packet_size < max_packet_size)
229 stv06xx_write_sensor(sd, PB_ROWSPEED, BIT(4)|BIT(3)|BIT(1));
230 else
231 stv06xx_write_sensor(sd, PB_ROWSPEED, BIT(5)|BIT(3)|BIT(1));
232
233 /* Setup sensor window */
234 if (mode & PB0100_CROP_TO_VGA) {
235 stv06xx_write_sensor(sd, PB_RSTART, 30);
236 stv06xx_write_sensor(sd, PB_CSTART, 20);
237 stv06xx_write_sensor(sd, PB_RWSIZE, 240 - 1);
238 stv06xx_write_sensor(sd, PB_CWSIZE, 320 - 1);
239 } else {
240 stv06xx_write_sensor(sd, PB_RSTART, 8);
241 stv06xx_write_sensor(sd, PB_CSTART, 4);
242 stv06xx_write_sensor(sd, PB_RWSIZE, 288 - 1);
243 stv06xx_write_sensor(sd, PB_CWSIZE, 352 - 1);
244 }
245
246 if (mode & PB0100_SUBSAMPLE) {
247 stv06xx_write_bridge(sd, STV_Y_CTRL, 0x02); /* Wrong, FIXME */
248 stv06xx_write_bridge(sd, STV_X_CTRL, 0x06);
249
250 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x10);
251 } else {
252 stv06xx_write_bridge(sd, STV_Y_CTRL, 0x01);
253 stv06xx_write_bridge(sd, STV_X_CTRL, 0x0a);
254 /* larger -> slower */
255 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x20);
256 }
257
258 /* set_gain also sets red and blue balance */
259 pb0100_set_gain(&sd->gspca_dev, sensor_settings[GAIN_IDX]);
260 pb0100_set_exposure(&sd->gspca_dev, sensor_settings[EXPOSURE_IDX]);
261 pb0100_set_autogain_target(&sd->gspca_dev,
262 sensor_settings[AUTOGAIN_TARGET_IDX]);
263 pb0100_set_autogain(&sd->gspca_dev, sensor_settings[AUTOGAIN_IDX]);
264
265 err = stv06xx_write_sensor(sd, PB_CONTROL, BIT(5)|BIT(3)|BIT(1));
266 PDEBUG(D_STREAM, "Started stream, status: %d", err);
267
268 return (err < 0) ? err : 0;
269 }
270
271 static int pb0100_stop(struct sd *sd)
272 {
273 int err;
274
275 err = stv06xx_write_sensor(sd, PB_ABORTFRAME, 1);
276
277 if (err < 0)
278 goto out;
279
280 /* Set bit 1 to zero */
281 err = stv06xx_write_sensor(sd, PB_CONTROL, BIT(5)|BIT(3));
282
283 PDEBUG(D_STREAM, "Halting stream");
284 out:
285 return (err < 0) ? err : 0;
286 }
287
288 static void pb0100_disconnect(struct sd *sd)
289 {
290 sd->sensor = NULL;
291 kfree(sd->sensor_priv);
292 }
293
294 /* FIXME: Sort the init commands out and put them into tables,
295 this is only for getting the camera to work */
296 /* FIXME: No error handling for now,
297 add this once the init has been converted to proper tables */
298 static int pb0100_init(struct sd *sd)
299 {
300 stv06xx_write_bridge(sd, STV_REG00, 1);
301 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0);
302
303 /* Reset sensor */
304 stv06xx_write_sensor(sd, PB_RESET, 1);
305 stv06xx_write_sensor(sd, PB_RESET, 0);
306
307 /* Disable chip */
308 stv06xx_write_sensor(sd, PB_CONTROL, BIT(5)|BIT(3));
309
310 /* Gain stuff...*/
311 stv06xx_write_sensor(sd, PB_PREADCTRL, BIT(12)|BIT(10)|BIT(6));
312 stv06xx_write_sensor(sd, PB_ADCGLOBALGAIN, 12);
313
314 /* Set up auto-exposure */
315 /* ADC VREF_HI new setting for a transition
316 from the Expose1 to the Expose2 setting */
317 stv06xx_write_sensor(sd, PB_R28, 12);
318 /* gain max for autoexposure */
319 stv06xx_write_sensor(sd, PB_ADCMAXGAIN, 180);
320 /* gain min for autoexposure */
321 stv06xx_write_sensor(sd, PB_ADCMINGAIN, 12);
322 /* Maximum frame integration time (programmed into R8)
323 allowed for auto-exposure routine */
324 stv06xx_write_sensor(sd, PB_R54, 3);
325 /* Minimum frame integration time (programmed into R8)
326 allowed for auto-exposure routine */
327 stv06xx_write_sensor(sd, PB_R55, 0);
328 stv06xx_write_sensor(sd, PB_UPDATEINT, 1);
329 /* R15 Expose0 (maximum that auto-exposure may use) */
330 stv06xx_write_sensor(sd, PB_R15, 800);
331 /* R17 Expose2 (minimum that auto-exposure may use) */
332 stv06xx_write_sensor(sd, PB_R17, 10);
333
334 stv06xx_write_sensor(sd, PB_EXPGAIN, 0);
335
336 /* 0x14 */
337 stv06xx_write_sensor(sd, PB_VOFFSET, 0);
338 /* 0x0D */
339 stv06xx_write_sensor(sd, PB_ADCGAINH, 11);
340 /* Set black level (important!) */
341 stv06xx_write_sensor(sd, PB_ADCGAINL, 0);
342
343 /* ??? */
344 stv06xx_write_bridge(sd, STV_REG00, 0x11);
345 stv06xx_write_bridge(sd, STV_REG03, 0x45);
346 stv06xx_write_bridge(sd, STV_REG04, 0x07);
347
348 /* Scan/timing for the sensor */
349 stv06xx_write_sensor(sd, PB_ROWSPEED, BIT(4)|BIT(3)|BIT(1));
350 stv06xx_write_sensor(sd, PB_CFILLIN, 14);
351 stv06xx_write_sensor(sd, PB_VBL, 0);
352 stv06xx_write_sensor(sd, PB_FINTTIME, 0);
353 stv06xx_write_sensor(sd, PB_RINTTIME, 123);
354
355 stv06xx_write_bridge(sd, STV_REG01, 0xc2);
356 stv06xx_write_bridge(sd, STV_REG02, 0xb0);
357 return 0;
358 }
359
360 static int pb0100_dump(struct sd *sd)
361 {
362 return 0;
363 }
364
365 static int pb0100_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
366 {
367 struct sd *sd = (struct sd *) gspca_dev;
368 s32 *sensor_settings = sd->sensor_priv;
369
370 *val = sensor_settings[GAIN_IDX];
371
372 return 0;
373 }
374
375 static int pb0100_set_gain(struct gspca_dev *gspca_dev, __s32 val)
376 {
377 int err;
378 struct sd *sd = (struct sd *) gspca_dev;
379 s32 *sensor_settings = sd->sensor_priv;
380
381 if (sensor_settings[AUTOGAIN_IDX])
382 return -EBUSY;
383
384 sensor_settings[GAIN_IDX] = val;
385 err = stv06xx_write_sensor(sd, PB_G1GAIN, val);
386 if (!err)
387 err = stv06xx_write_sensor(sd, PB_G2GAIN, val);
388 PDEBUG(D_V4L2, "Set green gain to %d, status: %d", val, err);
389
390 if (!err)
391 err = pb0100_set_red_balance(gspca_dev,
392 sensor_settings[RED_BALANCE_IDX]);
393 if (!err)
394 err = pb0100_set_blue_balance(gspca_dev,
395 sensor_settings[BLUE_BALANCE_IDX]);
396
397 return err;
398 }
399
400 static int pb0100_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val)
401 {
402 struct sd *sd = (struct sd *) gspca_dev;
403 s32 *sensor_settings = sd->sensor_priv;
404
405 *val = sensor_settings[RED_BALANCE_IDX];
406
407 return 0;
408 }
409
410 static int pb0100_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
411 {
412 int err;
413 struct sd *sd = (struct sd *) gspca_dev;
414 s32 *sensor_settings = sd->sensor_priv;
415
416 if (sensor_settings[AUTOGAIN_IDX])
417 return -EBUSY;
418
419 sensor_settings[RED_BALANCE_IDX] = val;
420 val += sensor_settings[GAIN_IDX];
421 if (val < 0)
422 val = 0;
423 else if (val > 255)
424 val = 255;
425
426 err = stv06xx_write_sensor(sd, PB_RGAIN, val);
427 PDEBUG(D_V4L2, "Set red gain to %d, status: %d", val, err);
428
429 return err;
430 }
431
432 static int pb0100_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val)
433 {
434 struct sd *sd = (struct sd *) gspca_dev;
435 s32 *sensor_settings = sd->sensor_priv;
436
437 *val = sensor_settings[BLUE_BALANCE_IDX];
438
439 return 0;
440 }
441
442 static int pb0100_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
443 {
444 int err;
445 struct sd *sd = (struct sd *) gspca_dev;
446 s32 *sensor_settings = sd->sensor_priv;
447
448 if (sensor_settings[AUTOGAIN_IDX])
449 return -EBUSY;
450
451 sensor_settings[BLUE_BALANCE_IDX] = val;
452 val += sensor_settings[GAIN_IDX];
453 if (val < 0)
454 val = 0;
455 else if (val > 255)
456 val = 255;
457
458 err = stv06xx_write_sensor(sd, PB_BGAIN, val);
459 PDEBUG(D_V4L2, "Set blue gain to %d, status: %d", val, err);
460
461 return err;
462 }
463
464 static int pb0100_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
465 {
466 struct sd *sd = (struct sd *) gspca_dev;
467 s32 *sensor_settings = sd->sensor_priv;
468
469 *val = sensor_settings[EXPOSURE_IDX];
470
471 return 0;
472 }
473
474 static int pb0100_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
475 {
476 int err;
477 struct sd *sd = (struct sd *) gspca_dev;
478 s32 *sensor_settings = sd->sensor_priv;
479
480 if (sensor_settings[AUTOGAIN_IDX])
481 return -EBUSY;
482
483 sensor_settings[EXPOSURE_IDX] = val;
484 err = stv06xx_write_sensor(sd, PB_RINTTIME, val);
485 PDEBUG(D_V4L2, "Set exposure to %d, status: %d", val, err);
486
487 return err;
488 }
489
490 static int pb0100_get_autogain(struct gspca_dev *gspca_dev, __s32 *val)
491 {
492 struct sd *sd = (struct sd *) gspca_dev;
493 s32 *sensor_settings = sd->sensor_priv;
494
495 *val = sensor_settings[AUTOGAIN_IDX];
496
497 return 0;
498 }
499
500 static int pb0100_set_autogain(struct gspca_dev *gspca_dev, __s32 val)
501 {
502 int err;
503 struct sd *sd = (struct sd *) gspca_dev;
504 s32 *sensor_settings = sd->sensor_priv;
505
506 sensor_settings[AUTOGAIN_IDX] = val;
507 if (sensor_settings[AUTOGAIN_IDX]) {
508 if (sensor_settings[NATURAL_IDX])
509 val = BIT(6)|BIT(4)|BIT(0);
510 else
511 val = BIT(4)|BIT(0);
512 } else
513 val = 0;
514
515 err = stv06xx_write_sensor(sd, PB_EXPGAIN, val);
516 PDEBUG(D_V4L2, "Set autogain to %d (natural: %d), status: %d",
517 sensor_settings[AUTOGAIN_IDX], sensor_settings[NATURAL_IDX],
518 err);
519
520 return err;
521 }
522
523 static int pb0100_get_autogain_target(struct gspca_dev *gspca_dev, __s32 *val)
524 {
525 struct sd *sd = (struct sd *) gspca_dev;
526 s32 *sensor_settings = sd->sensor_priv;
527
528 *val = sensor_settings[AUTOGAIN_TARGET_IDX];
529
530 return 0;
531 }
532
533 static int pb0100_set_autogain_target(struct gspca_dev *gspca_dev, __s32 val)
534 {
535 int err, totalpixels, brightpixels, darkpixels;
536 struct sd *sd = (struct sd *) gspca_dev;
537 s32 *sensor_settings = sd->sensor_priv;
538
539 sensor_settings[AUTOGAIN_TARGET_IDX] = val;
540
541 /* Number of pixels counted by the sensor when subsampling the pixels.
542 * Slightly larger than the real value to avoid oscillation */
543 totalpixels = gspca_dev->width * gspca_dev->height;
544 totalpixels = totalpixels/(8*8) + totalpixels/(64*64);
545
546 brightpixels = (totalpixels * val) >> 8;
547 darkpixels = totalpixels - brightpixels;
548 err = stv06xx_write_sensor(sd, PB_R21, brightpixels);
549 if (!err)
550 err = stv06xx_write_sensor(sd, PB_R22, darkpixels);
551
552 PDEBUG(D_V4L2, "Set autogain target to %d, status: %d", val, err);
553
554 return err;
555 }
556
557 static int pb0100_get_natural(struct gspca_dev *gspca_dev, __s32 *val)
558 {
559 struct sd *sd = (struct sd *) gspca_dev;
560 s32 *sensor_settings = sd->sensor_priv;
561
562 *val = sensor_settings[NATURAL_IDX];
563
564 return 0;
565 }
566
567 static int pb0100_set_natural(struct gspca_dev *gspca_dev, __s32 val)
568 {
569 struct sd *sd = (struct sd *) gspca_dev;
570 s32 *sensor_settings = sd->sensor_priv;
571
572 sensor_settings[NATURAL_IDX] = val;
573
574 return pb0100_set_autogain(gspca_dev, sensor_settings[AUTOGAIN_IDX]);
575 }