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Merge remote-tracking branch 'moduleh/module.h-split'
[linux-2.6/next.git] / drivers / media / video / gspca / stv06xx / stv06xx_pb0100.c
blob75a5b9c2f15ff35810637c4f4b04ff6398eda736
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 #include "stv06xx_pb0100.h"
48
49 static const struct ctrl pb0100_ctrl[] = {
50 #define GAIN_IDX 0
51 {
52 {
53 .id = V4L2_CID_GAIN,
54 .type = V4L2_CTRL_TYPE_INTEGER,
55 .name = "Gain",
56 .minimum = 0,
57 .maximum = 255,
58 .step = 1,
59 .default_value = 128
60 },
61 .set = pb0100_set_gain,
62 .get = pb0100_get_gain
63 },
64 #define RED_BALANCE_IDX 1
65 {
66 {
67 .id = V4L2_CID_RED_BALANCE,
68 .type = V4L2_CTRL_TYPE_INTEGER,
69 .name = "Red Balance",
70 .minimum = -255,
71 .maximum = 255,
72 .step = 1,
73 .default_value = 0
74 },
75 .set = pb0100_set_red_balance,
76 .get = pb0100_get_red_balance
77 },
78 #define BLUE_BALANCE_IDX 2
79 {
80 {
81 .id = V4L2_CID_BLUE_BALANCE,
82 .type = V4L2_CTRL_TYPE_INTEGER,
83 .name = "Blue Balance",
84 .minimum = -255,
85 .maximum = 255,
86 .step = 1,
87 .default_value = 0
88 },
89 .set = pb0100_set_blue_balance,
90 .get = pb0100_get_blue_balance
91 },
92 #define EXPOSURE_IDX 3
93 {
94 {
95 .id = V4L2_CID_EXPOSURE,
96 .type = V4L2_CTRL_TYPE_INTEGER,
97 .name = "Exposure",
98 .minimum = 0,
99 .maximum = 511,
100 .step = 1,
101 .default_value = 12
102 },
103 .set = pb0100_set_exposure,
104 .get = pb0100_get_exposure
105 },
106 #define AUTOGAIN_IDX 4
107 {
108 {
109 .id = V4L2_CID_AUTOGAIN,
110 .type = V4L2_CTRL_TYPE_BOOLEAN,
111 .name = "Automatic Gain and Exposure",
112 .minimum = 0,
113 .maximum = 1,
114 .step = 1,
115 .default_value = 1
116 },
117 .set = pb0100_set_autogain,
118 .get = pb0100_get_autogain
119 },
120 #define AUTOGAIN_TARGET_IDX 5
121 {
122 {
123 .id = V4L2_CTRL_CLASS_USER + 0x1000,
124 .type = V4L2_CTRL_TYPE_INTEGER,
125 .name = "Automatic Gain Target",
126 .minimum = 0,
127 .maximum = 255,
128 .step = 1,
129 .default_value = 128
130 },
131 .set = pb0100_set_autogain_target,
132 .get = pb0100_get_autogain_target
133 },
134 #define NATURAL_IDX 6
135 {
136 {
137 .id = V4L2_CTRL_CLASS_USER + 0x1001,
138 .type = V4L2_CTRL_TYPE_BOOLEAN,
139 .name = "Natural Light Source",
140 .minimum = 0,
141 .maximum = 1,
142 .step = 1,
143 .default_value = 1
144 },
145 .set = pb0100_set_natural,
146 .get = pb0100_get_natural
147 }
148 };
149
150 static struct v4l2_pix_format pb0100_mode[] = {
151 /* low res / subsample modes disabled as they are only half res horizontal,
152 halving the vertical resolution does not seem to work */
153 {
154 320,
155 240,
156 V4L2_PIX_FMT_SGRBG8,
157 V4L2_FIELD_NONE,
158 .sizeimage = 320 * 240,
159 .bytesperline = 320,
160 .colorspace = V4L2_COLORSPACE_SRGB,
161 .priv = PB0100_CROP_TO_VGA
162 },
163 {
164 352,
165 288,
166 V4L2_PIX_FMT_SGRBG8,
167 V4L2_FIELD_NONE,
168 .sizeimage = 352 * 288,
169 .bytesperline = 352,
170 .colorspace = V4L2_COLORSPACE_SRGB,
171 .priv = 0
172 }
173 };
174
175 static int pb0100_probe(struct sd *sd)
176 {
177 u16 sensor;
178 int i, err;
179 s32 *sensor_settings;
180
181 err = stv06xx_read_sensor(sd, PB_IDENT, &sensor);
182
183 if (err < 0)
184 return -ENODEV;
185
186 if ((sensor >> 8) == 0x64) {
187 sensor_settings = kmalloc(
188 ARRAY_SIZE(pb0100_ctrl) * sizeof(s32),
189 GFP_KERNEL);
190 if (!sensor_settings)
191 return -ENOMEM;
192
193 info("Photobit pb0100 sensor detected");
194
195 sd->gspca_dev.cam.cam_mode = pb0100_mode;
196 sd->gspca_dev.cam.nmodes = ARRAY_SIZE(pb0100_mode);
197 sd->desc.ctrls = pb0100_ctrl;
198 sd->desc.nctrls = ARRAY_SIZE(pb0100_ctrl);
199 for (i = 0; i < sd->desc.nctrls; i++)
200 sensor_settings[i] = pb0100_ctrl[i].qctrl.default_value;
201 sd->sensor_priv = sensor_settings;
202
203 return 0;
204 }
205
206 return -ENODEV;
207 }
208
209 static int pb0100_start(struct sd *sd)
210 {
211 int err, packet_size, max_packet_size;
212 struct usb_host_interface *alt;
213 struct usb_interface *intf;
214 struct cam *cam = &sd->gspca_dev.cam;
215 s32 *sensor_settings = sd->sensor_priv;
216 u32 mode = cam->cam_mode[sd->gspca_dev.curr_mode].priv;
217
218 intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface);
219 alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt);
220 if (!alt)
221 return -ENODEV;
222 packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
223
224 /* If we don't have enough bandwidth use a lower framerate */
225 max_packet_size = sd->sensor->max_packet_size[sd->gspca_dev.curr_mode];
226 if (packet_size < max_packet_size)
227 stv06xx_write_sensor(sd, PB_ROWSPEED, BIT(4)|BIT(3)|BIT(1));
228 else
229 stv06xx_write_sensor(sd, PB_ROWSPEED, BIT(5)|BIT(3)|BIT(1));
230
231 /* Setup sensor window */
232 if (mode & PB0100_CROP_TO_VGA) {
233 stv06xx_write_sensor(sd, PB_RSTART, 30);
234 stv06xx_write_sensor(sd, PB_CSTART, 20);
235 stv06xx_write_sensor(sd, PB_RWSIZE, 240 - 1);
236 stv06xx_write_sensor(sd, PB_CWSIZE, 320 - 1);
237 } else {
238 stv06xx_write_sensor(sd, PB_RSTART, 8);
239 stv06xx_write_sensor(sd, PB_CSTART, 4);
240 stv06xx_write_sensor(sd, PB_RWSIZE, 288 - 1);
241 stv06xx_write_sensor(sd, PB_CWSIZE, 352 - 1);
242 }
243
244 if (mode & PB0100_SUBSAMPLE) {
245 stv06xx_write_bridge(sd, STV_Y_CTRL, 0x02); /* Wrong, FIXME */
246 stv06xx_write_bridge(sd, STV_X_CTRL, 0x06);
247
248 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x10);
249 } else {
250 stv06xx_write_bridge(sd, STV_Y_CTRL, 0x01);
251 stv06xx_write_bridge(sd, STV_X_CTRL, 0x0a);
252 /* larger -> slower */
253 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x20);
254 }
255
256 /* set_gain also sets red and blue balance */
257 pb0100_set_gain(&sd->gspca_dev, sensor_settings[GAIN_IDX]);
258 pb0100_set_exposure(&sd->gspca_dev, sensor_settings[EXPOSURE_IDX]);
259 pb0100_set_autogain_target(&sd->gspca_dev,
260 sensor_settings[AUTOGAIN_TARGET_IDX]);
261 pb0100_set_autogain(&sd->gspca_dev, sensor_settings[AUTOGAIN_IDX]);
262
263 err = stv06xx_write_sensor(sd, PB_CONTROL, BIT(5)|BIT(3)|BIT(1));
264 PDEBUG(D_STREAM, "Started stream, status: %d", err);
265
266 return (err < 0) ? err : 0;
267 }
268
269 static int pb0100_stop(struct sd *sd)
270 {
271 int err;
272
273 err = stv06xx_write_sensor(sd, PB_ABORTFRAME, 1);
274
275 if (err < 0)
276 goto out;
277
278 /* Set bit 1 to zero */
279 err = stv06xx_write_sensor(sd, PB_CONTROL, BIT(5)|BIT(3));
280
281 PDEBUG(D_STREAM, "Halting stream");
282 out:
283 return (err < 0) ? err : 0;
284 }
285
286 static void pb0100_disconnect(struct sd *sd)
287 {
288 sd->sensor = NULL;
289 kfree(sd->sensor_priv);
290 }
291
292 /* FIXME: Sort the init commands out and put them into tables,
293 this is only for getting the camera to work */
294 /* FIXME: No error handling for now,
295 add this once the init has been converted to proper tables */
296 static int pb0100_init(struct sd *sd)
297 {
298 stv06xx_write_bridge(sd, STV_REG00, 1);
299 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0);
300
301 /* Reset sensor */
302 stv06xx_write_sensor(sd, PB_RESET, 1);
303 stv06xx_write_sensor(sd, PB_RESET, 0);
304
305 /* Disable chip */
306 stv06xx_write_sensor(sd, PB_CONTROL, BIT(5)|BIT(3));
307
308 /* Gain stuff...*/
309 stv06xx_write_sensor(sd, PB_PREADCTRL, BIT(12)|BIT(10)|BIT(6));
310 stv06xx_write_sensor(sd, PB_ADCGLOBALGAIN, 12);
311
312 /* Set up auto-exposure */
313 /* ADC VREF_HI new setting for a transition
314 from the Expose1 to the Expose2 setting */
315 stv06xx_write_sensor(sd, PB_R28, 12);
316 /* gain max for autoexposure */
317 stv06xx_write_sensor(sd, PB_ADCMAXGAIN, 180);
318 /* gain min for autoexposure */
319 stv06xx_write_sensor(sd, PB_ADCMINGAIN, 12);
320 /* Maximum frame integration time (programmed into R8)
321 allowed for auto-exposure routine */
322 stv06xx_write_sensor(sd, PB_R54, 3);
323 /* Minimum frame integration time (programmed into R8)
324 allowed for auto-exposure routine */
325 stv06xx_write_sensor(sd, PB_R55, 0);
326 stv06xx_write_sensor(sd, PB_UPDATEINT, 1);
327 /* R15 Expose0 (maximum that auto-exposure may use) */
328 stv06xx_write_sensor(sd, PB_R15, 800);
329 /* R17 Expose2 (minimum that auto-exposure may use) */
330 stv06xx_write_sensor(sd, PB_R17, 10);
331
332 stv06xx_write_sensor(sd, PB_EXPGAIN, 0);
333
334 /* 0x14 */
335 stv06xx_write_sensor(sd, PB_VOFFSET, 0);
336 /* 0x0D */
337 stv06xx_write_sensor(sd, PB_ADCGAINH, 11);
338 /* Set black level (important!) */
339 stv06xx_write_sensor(sd, PB_ADCGAINL, 0);
340
341 /* ??? */
342 stv06xx_write_bridge(sd, STV_REG00, 0x11);
343 stv06xx_write_bridge(sd, STV_REG03, 0x45);
344 stv06xx_write_bridge(sd, STV_REG04, 0x07);
345
346 /* Scan/timing for the sensor */
347 stv06xx_write_sensor(sd, PB_ROWSPEED, BIT(4)|BIT(3)|BIT(1));
348 stv06xx_write_sensor(sd, PB_CFILLIN, 14);
349 stv06xx_write_sensor(sd, PB_VBL, 0);
350 stv06xx_write_sensor(sd, PB_FINTTIME, 0);
351 stv06xx_write_sensor(sd, PB_RINTTIME, 123);
352
353 stv06xx_write_bridge(sd, STV_REG01, 0xc2);
354 stv06xx_write_bridge(sd, STV_REG02, 0xb0);
355 return 0;
356 }
357
358 static int pb0100_dump(struct sd *sd)
359 {
360 return 0;
361 }
362
363 static int pb0100_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
364 {
365 struct sd *sd = (struct sd *) gspca_dev;
366 s32 *sensor_settings = sd->sensor_priv;
367
368 *val = sensor_settings[GAIN_IDX];
369
370 return 0;
371 }
372
373 static int pb0100_set_gain(struct gspca_dev *gspca_dev, __s32 val)
374 {
375 int err;
376 struct sd *sd = (struct sd *) gspca_dev;
377 s32 *sensor_settings = sd->sensor_priv;
378
379 if (sensor_settings[AUTOGAIN_IDX])
380 return -EBUSY;
381
382 sensor_settings[GAIN_IDX] = val;
383 err = stv06xx_write_sensor(sd, PB_G1GAIN, val);
384 if (!err)
385 err = stv06xx_write_sensor(sd, PB_G2GAIN, val);
386 PDEBUG(D_V4L2, "Set green gain to %d, status: %d", val, err);
387
388 if (!err)
389 err = pb0100_set_red_balance(gspca_dev,
390 sensor_settings[RED_BALANCE_IDX]);
391 if (!err)
392 err = pb0100_set_blue_balance(gspca_dev,
393 sensor_settings[BLUE_BALANCE_IDX]);
394
395 return err;
396 }
397
398 static int pb0100_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val)
399 {
400 struct sd *sd = (struct sd *) gspca_dev;
401 s32 *sensor_settings = sd->sensor_priv;
402
403 *val = sensor_settings[RED_BALANCE_IDX];
404
405 return 0;
406 }
407
408 static int pb0100_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
409 {
410 int err;
411 struct sd *sd = (struct sd *) gspca_dev;
412 s32 *sensor_settings = sd->sensor_priv;
413
414 if (sensor_settings[AUTOGAIN_IDX])
415 return -EBUSY;
416
417 sensor_settings[RED_BALANCE_IDX] = val;
418 val += sensor_settings[GAIN_IDX];
419 if (val < 0)
420 val = 0;
421 else if (val > 255)
422 val = 255;
423
424 err = stv06xx_write_sensor(sd, PB_RGAIN, val);
425 PDEBUG(D_V4L2, "Set red gain to %d, status: %d", val, err);
426
427 return err;
428 }
429
430 static int pb0100_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val)
431 {
432 struct sd *sd = (struct sd *) gspca_dev;
433 s32 *sensor_settings = sd->sensor_priv;
434
435 *val = sensor_settings[BLUE_BALANCE_IDX];
436
437 return 0;
438 }
439
440 static int pb0100_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
441 {
442 int err;
443 struct sd *sd = (struct sd *) gspca_dev;
444 s32 *sensor_settings = sd->sensor_priv;
445
446 if (sensor_settings[AUTOGAIN_IDX])
447 return -EBUSY;
448
449 sensor_settings[BLUE_BALANCE_IDX] = val;
450 val += sensor_settings[GAIN_IDX];
451 if (val < 0)
452 val = 0;
453 else if (val > 255)
454 val = 255;
455
456 err = stv06xx_write_sensor(sd, PB_BGAIN, val);
457 PDEBUG(D_V4L2, "Set blue gain to %d, status: %d", val, err);
458
459 return err;
460 }
461
462 static int pb0100_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
463 {
464 struct sd *sd = (struct sd *) gspca_dev;
465 s32 *sensor_settings = sd->sensor_priv;
466
467 *val = sensor_settings[EXPOSURE_IDX];
468
469 return 0;
470 }
471
472 static int pb0100_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
473 {
474 int err;
475 struct sd *sd = (struct sd *) gspca_dev;
476 s32 *sensor_settings = sd->sensor_priv;
477
478 if (sensor_settings[AUTOGAIN_IDX])
479 return -EBUSY;
480
481 sensor_settings[EXPOSURE_IDX] = val;
482 err = stv06xx_write_sensor(sd, PB_RINTTIME, val);
483 PDEBUG(D_V4L2, "Set exposure to %d, status: %d", val, err);
484
485 return err;
486 }
487
488 static int pb0100_get_autogain(struct gspca_dev *gspca_dev, __s32 *val)
489 {
490 struct sd *sd = (struct sd *) gspca_dev;
491 s32 *sensor_settings = sd->sensor_priv;
492
493 *val = sensor_settings[AUTOGAIN_IDX];
494
495 return 0;
496 }
497
498 static int pb0100_set_autogain(struct gspca_dev *gspca_dev, __s32 val)
499 {
500 int err;
501 struct sd *sd = (struct sd *) gspca_dev;
502 s32 *sensor_settings = sd->sensor_priv;
503
504 sensor_settings[AUTOGAIN_IDX] = val;
505 if (sensor_settings[AUTOGAIN_IDX]) {
506 if (sensor_settings[NATURAL_IDX])
507 val = BIT(6)|BIT(4)|BIT(0);
508 else
509 val = BIT(4)|BIT(0);
510 } else
511 val = 0;
512
513 err = stv06xx_write_sensor(sd, PB_EXPGAIN, val);
514 PDEBUG(D_V4L2, "Set autogain to %d (natural: %d), status: %d",
515 sensor_settings[AUTOGAIN_IDX], sensor_settings[NATURAL_IDX],
516 err);
517
518 return err;
519 }
520
521 static int pb0100_get_autogain_target(struct gspca_dev *gspca_dev, __s32 *val)
522 {
523 struct sd *sd = (struct sd *) gspca_dev;
524 s32 *sensor_settings = sd->sensor_priv;
525
526 *val = sensor_settings[AUTOGAIN_TARGET_IDX];
527
528 return 0;
529 }
530
531 static int pb0100_set_autogain_target(struct gspca_dev *gspca_dev, __s32 val)
532 {
533 int err, totalpixels, brightpixels, darkpixels;
534 struct sd *sd = (struct sd *) gspca_dev;
535 s32 *sensor_settings = sd->sensor_priv;
536
537 sensor_settings[AUTOGAIN_TARGET_IDX] = val;
538
539 /* Number of pixels counted by the sensor when subsampling the pixels.
540 * Slightly larger than the real value to avoid oscillation */
541 totalpixels = gspca_dev->width * gspca_dev->height;
542 totalpixels = totalpixels/(8*8) + totalpixels/(64*64);
543
544 brightpixels = (totalpixels * val) >> 8;
545 darkpixels = totalpixels - brightpixels;
546 err = stv06xx_write_sensor(sd, PB_R21, brightpixels);
547 if (!err)
548 err = stv06xx_write_sensor(sd, PB_R22, darkpixels);
549
550 PDEBUG(D_V4L2, "Set autogain target to %d, status: %d", val, err);
551
552 return err;
553 }
554
555 static int pb0100_get_natural(struct gspca_dev *gspca_dev, __s32 *val)
556 {
557 struct sd *sd = (struct sd *) gspca_dev;
558 s32 *sensor_settings = sd->sensor_priv;
559
560 *val = sensor_settings[NATURAL_IDX];
561
562 return 0;
563 }
564
565 static int pb0100_set_natural(struct gspca_dev *gspca_dev, __s32 val)
566 {
567 struct sd *sd = (struct sd *) gspca_dev;
568 s32 *sensor_settings = sd->sensor_priv;
569
570 sensor_settings[NATURAL_IDX] = val;
571
572 return pb0100_set_autogain(gspca_dev, sensor_settings[AUTOGAIN_IDX]);
573 }
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