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[pohmelfs.git] / drivers / media / video / gspca / m5602 / m5602_po1030.c
blobb8771698cbcb1b8260654adc8d9cba84504139e5
1 /*
2 * Driver for the po1030 sensor
3 *
4 * Copyright (c) 2008 Erik Andrén
5 * Copyright (c) 2007 Ilyes Gouta. Based on the m5603x Linux Driver Project.
6 * Copyright (c) 2005 m5603x Linux Driver Project <m5602@x3ng.com.br>
7 *
8 * Portions of code to USB interface and ALi driver software,
9 * Copyright (c) 2006 Willem Duinker
10 * v4l2 interface modeled after the V4L2 driver
11 * for SN9C10x PC Camera Controllers
12 *
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License as
15 * published by the Free Software Foundation, version 2.
16 *
17 */
18
19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
20
21 #include "m5602_po1030.h"
22
23 static int po1030_get_exposure(struct gspca_dev *gspca_dev, __s32 *val);
24 static int po1030_set_exposure(struct gspca_dev *gspca_dev, __s32 val);
25 static int po1030_get_gain(struct gspca_dev *gspca_dev, __s32 *val);
26 static int po1030_set_gain(struct gspca_dev *gspca_dev, __s32 val);
27 static int po1030_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val);
28 static int po1030_set_red_balance(struct gspca_dev *gspca_dev, __s32 val);
29 static int po1030_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val);
30 static int po1030_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val);
31 static int po1030_get_green_balance(struct gspca_dev *gspca_dev, __s32 *val);
32 static int po1030_set_green_balance(struct gspca_dev *gspca_dev, __s32 val);
33 static int po1030_get_hflip(struct gspca_dev *gspca_dev, __s32 *val);
34 static int po1030_set_hflip(struct gspca_dev *gspca_dev, __s32 val);
35 static int po1030_get_vflip(struct gspca_dev *gspca_dev, __s32 *val);
36 static int po1030_set_vflip(struct gspca_dev *gspca_dev, __s32 val);
37 static int po1030_set_auto_white_balance(struct gspca_dev *gspca_dev,
38 __s32 val);
39 static int po1030_get_auto_white_balance(struct gspca_dev *gspca_dev,
40 __s32 *val);
41 static int po1030_set_auto_exposure(struct gspca_dev *gspca_dev,
42 __s32 val);
43 static int po1030_get_auto_exposure(struct gspca_dev *gspca_dev,
44 __s32 *val);
45
46 static struct v4l2_pix_format po1030_modes[] = {
47 {
48 640,
49 480,
50 V4L2_PIX_FMT_SBGGR8,
51 V4L2_FIELD_NONE,
52 .sizeimage = 640 * 480,
53 .bytesperline = 640,
54 .colorspace = V4L2_COLORSPACE_SRGB,
55 .priv = 2
56 }
57 };
58
59 static const struct ctrl po1030_ctrls[] = {
60 #define GAIN_IDX 0
61 {
62 {
63 .id = V4L2_CID_GAIN,
64 .type = V4L2_CTRL_TYPE_INTEGER,
65 .name = "gain",
66 .minimum = 0x00,
67 .maximum = 0x4f,
68 .step = 0x1,
69 .default_value = PO1030_GLOBAL_GAIN_DEFAULT,
70 .flags = V4L2_CTRL_FLAG_SLIDER
71 },
72 .set = po1030_set_gain,
73 .get = po1030_get_gain
74 },
75 #define EXPOSURE_IDX 1
76 {
77 {
78 .id = V4L2_CID_EXPOSURE,
79 .type = V4L2_CTRL_TYPE_INTEGER,
80 .name = "exposure",
81 .minimum = 0x00,
82 .maximum = 0x02ff,
83 .step = 0x1,
84 .default_value = PO1030_EXPOSURE_DEFAULT,
85 .flags = V4L2_CTRL_FLAG_SLIDER
86 },
87 .set = po1030_set_exposure,
88 .get = po1030_get_exposure
89 },
90 #define RED_BALANCE_IDX 2
91 {
92 {
93 .id = V4L2_CID_RED_BALANCE,
94 .type = V4L2_CTRL_TYPE_INTEGER,
95 .name = "red balance",
96 .minimum = 0x00,
97 .maximum = 0xff,
98 .step = 0x1,
99 .default_value = PO1030_RED_GAIN_DEFAULT,
100 .flags = V4L2_CTRL_FLAG_SLIDER
101 },
102 .set = po1030_set_red_balance,
103 .get = po1030_get_red_balance
104 },
105 #define BLUE_BALANCE_IDX 3
106 {
107 {
108 .id = V4L2_CID_BLUE_BALANCE,
109 .type = V4L2_CTRL_TYPE_INTEGER,
110 .name = "blue balance",
111 .minimum = 0x00,
112 .maximum = 0xff,
113 .step = 0x1,
114 .default_value = PO1030_BLUE_GAIN_DEFAULT,
115 .flags = V4L2_CTRL_FLAG_SLIDER
116 },
117 .set = po1030_set_blue_balance,
118 .get = po1030_get_blue_balance
119 },
120 #define HFLIP_IDX 4
121 {
122 {
123 .id = V4L2_CID_HFLIP,
124 .type = V4L2_CTRL_TYPE_BOOLEAN,
125 .name = "horizontal flip",
126 .minimum = 0,
127 .maximum = 1,
128 .step = 1,
129 .default_value = 0,
130 },
131 .set = po1030_set_hflip,
132 .get = po1030_get_hflip
133 },
134 #define VFLIP_IDX 5
135 {
136 {
137 .id = V4L2_CID_VFLIP,
138 .type = V4L2_CTRL_TYPE_BOOLEAN,
139 .name = "vertical flip",
140 .minimum = 0,
141 .maximum = 1,
142 .step = 1,
143 .default_value = 0,
144 },
145 .set = po1030_set_vflip,
146 .get = po1030_get_vflip
147 },
148 #define AUTO_WHITE_BALANCE_IDX 6
149 {
150 {
151 .id = V4L2_CID_AUTO_WHITE_BALANCE,
152 .type = V4L2_CTRL_TYPE_BOOLEAN,
153 .name = "auto white balance",
154 .minimum = 0,
155 .maximum = 1,
156 .step = 1,
157 .default_value = 0,
158 },
159 .set = po1030_set_auto_white_balance,
160 .get = po1030_get_auto_white_balance
161 },
162 #define AUTO_EXPOSURE_IDX 7
163 {
164 {
165 .id = V4L2_CID_EXPOSURE_AUTO,
166 .type = V4L2_CTRL_TYPE_BOOLEAN,
167 .name = "auto exposure",
168 .minimum = 0,
169 .maximum = 1,
170 .step = 1,
171 .default_value = 0,
172 },
173 .set = po1030_set_auto_exposure,
174 .get = po1030_get_auto_exposure
175 },
176 #define GREEN_BALANCE_IDX 8
177 {
178 {
179 .id = M5602_V4L2_CID_GREEN_BALANCE,
180 .type = V4L2_CTRL_TYPE_INTEGER,
181 .name = "green balance",
182 .minimum = 0x00,
183 .maximum = 0xff,
184 .step = 0x1,
185 .default_value = PO1030_GREEN_GAIN_DEFAULT,
186 .flags = V4L2_CTRL_FLAG_SLIDER
187 },
188 .set = po1030_set_green_balance,
189 .get = po1030_get_green_balance
190 },
191 };
192
193 static void po1030_dump_registers(struct sd *sd);
194
195 int po1030_probe(struct sd *sd)
196 {
197 u8 dev_id_h = 0, i;
198 s32 *sensor_settings;
199
200 if (force_sensor) {
201 if (force_sensor == PO1030_SENSOR) {
202 pr_info("Forcing a %s sensor\n", po1030.name);
203 goto sensor_found;
204 }
205 /* If we want to force another sensor, don't try to probe this
206 * one */
207 return -ENODEV;
208 }
209
210 PDEBUG(D_PROBE, "Probing for a po1030 sensor");
211
212 /* Run the pre-init to actually probe the unit */
213 for (i = 0; i < ARRAY_SIZE(preinit_po1030); i++) {
214 u8 data = preinit_po1030[i][2];
215 if (preinit_po1030[i][0] == SENSOR)
216 m5602_write_sensor(sd,
217 preinit_po1030[i][1], &data, 1);
218 else
219 m5602_write_bridge(sd, preinit_po1030[i][1], data);
220 }
221
222 if (m5602_read_sensor(sd, PO1030_DEVID_H, &dev_id_h, 1))
223 return -ENODEV;
224
225 if (dev_id_h == 0x30) {
226 pr_info("Detected a po1030 sensor\n");
227 goto sensor_found;
228 }
229 return -ENODEV;
230
231 sensor_found:
232 sensor_settings = kmalloc(
233 ARRAY_SIZE(po1030_ctrls) * sizeof(s32), GFP_KERNEL);
234 if (!sensor_settings)
235 return -ENOMEM;
236
237 sd->gspca_dev.cam.cam_mode = po1030_modes;
238 sd->gspca_dev.cam.nmodes = ARRAY_SIZE(po1030_modes);
239 sd->desc->ctrls = po1030_ctrls;
240 sd->desc->nctrls = ARRAY_SIZE(po1030_ctrls);
241
242 for (i = 0; i < ARRAY_SIZE(po1030_ctrls); i++)
243 sensor_settings[i] = po1030_ctrls[i].qctrl.default_value;
244 sd->sensor_priv = sensor_settings;
245
246 return 0;
247 }
248
249 int po1030_init(struct sd *sd)
250 {
251 s32 *sensor_settings = sd->sensor_priv;
252 int i, err = 0;
253
254 /* Init the sensor */
255 for (i = 0; i < ARRAY_SIZE(init_po1030) && !err; i++) {
256 u8 data[2] = {0x00, 0x00};
257
258 switch (init_po1030[i][0]) {
259 case BRIDGE:
260 err = m5602_write_bridge(sd,
261 init_po1030[i][1],
262 init_po1030[i][2]);
263 break;
264
265 case SENSOR:
266 data[0] = init_po1030[i][2];
267 err = m5602_write_sensor(sd,
268 init_po1030[i][1], data, 1);
269 break;
270
271 default:
272 pr_info("Invalid stream command, exiting init\n");
273 return -EINVAL;
274 }
275 }
276 if (err < 0)
277 return err;
278
279 if (dump_sensor)
280 po1030_dump_registers(sd);
281
282 err = po1030_set_exposure(&sd->gspca_dev,
283 sensor_settings[EXPOSURE_IDX]);
284 if (err < 0)
285 return err;
286
287 err = po1030_set_gain(&sd->gspca_dev, sensor_settings[GAIN_IDX]);
288 if (err < 0)
289 return err;
290
291 err = po1030_set_hflip(&sd->gspca_dev, sensor_settings[HFLIP_IDX]);
292 if (err < 0)
293 return err;
294
295 err = po1030_set_vflip(&sd->gspca_dev, sensor_settings[VFLIP_IDX]);
296 if (err < 0)
297 return err;
298
299 err = po1030_set_red_balance(&sd->gspca_dev,
300 sensor_settings[RED_BALANCE_IDX]);
301 if (err < 0)
302 return err;
303
304 err = po1030_set_blue_balance(&sd->gspca_dev,
305 sensor_settings[BLUE_BALANCE_IDX]);
306 if (err < 0)
307 return err;
308
309 err = po1030_set_green_balance(&sd->gspca_dev,
310 sensor_settings[GREEN_BALANCE_IDX]);
311 if (err < 0)
312 return err;
313
314 err = po1030_set_auto_white_balance(&sd->gspca_dev,
315 sensor_settings[AUTO_WHITE_BALANCE_IDX]);
316 if (err < 0)
317 return err;
318
319 err = po1030_set_auto_exposure(&sd->gspca_dev,
320 sensor_settings[AUTO_EXPOSURE_IDX]);
321 return err;
322 }
323
324 int po1030_start(struct sd *sd)
325 {
326 struct cam *cam = &sd->gspca_dev.cam;
327 int i, err = 0;
328 int width = cam->cam_mode[sd->gspca_dev.curr_mode].width;
329 int height = cam->cam_mode[sd->gspca_dev.curr_mode].height;
330 int ver_offs = cam->cam_mode[sd->gspca_dev.curr_mode].priv;
331 u8 data;
332
333 switch (width) {
334 case 320:
335 data = PO1030_SUBSAMPLING;
336 err = m5602_write_sensor(sd, PO1030_CONTROL3, &data, 1);
337 if (err < 0)
338 return err;
339
340 data = ((width + 3) >> 8) & 0xff;
341 err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_H, &data, 1);
342 if (err < 0)
343 return err;
344
345 data = (width + 3) & 0xff;
346 err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_L, &data, 1);
347 if (err < 0)
348 return err;
349
350 data = ((height + 1) >> 8) & 0xff;
351 err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_H, &data, 1);
352 if (err < 0)
353 return err;
354
355 data = (height + 1) & 0xff;
356 err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_L, &data, 1);
357
358 height += 6;
359 width -= 1;
360 break;
361
362 case 640:
363 data = 0;
364 err = m5602_write_sensor(sd, PO1030_CONTROL3, &data, 1);
365 if (err < 0)
366 return err;
367
368 data = ((width + 7) >> 8) & 0xff;
369 err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_H, &data, 1);
370 if (err < 0)
371 return err;
372
373 data = (width + 7) & 0xff;
374 err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_L, &data, 1);
375 if (err < 0)
376 return err;
377
378 data = ((height + 3) >> 8) & 0xff;
379 err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_H, &data, 1);
380 if (err < 0)
381 return err;
382
383 data = (height + 3) & 0xff;
384 err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_L, &data, 1);
385
386 height += 12;
387 width -= 2;
388 break;
389 }
390 err = m5602_write_bridge(sd, M5602_XB_SENSOR_TYPE, 0x0c);
391 if (err < 0)
392 return err;
393
394 err = m5602_write_bridge(sd, M5602_XB_LINE_OF_FRAME_H, 0x81);
395 if (err < 0)
396 return err;
397
398 err = m5602_write_bridge(sd, M5602_XB_PIX_OF_LINE_H, 0x82);
399 if (err < 0)
400 return err;
401
402 err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0x01);
403 if (err < 0)
404 return err;
405
406 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA,
407 ((ver_offs >> 8) & 0xff));
408 if (err < 0)
409 return err;
410
411 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (ver_offs & 0xff));
412 if (err < 0)
413 return err;
414
415 for (i = 0; i < 2 && !err; i++)
416 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0);
417 if (err < 0)
418 return err;
419
420 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height >> 8) & 0xff);
421 if (err < 0)
422 return err;
423
424 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height & 0xff));
425 if (err < 0)
426 return err;
427
428 for (i = 0; i < 2 && !err; i++)
429 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0);
430
431 for (i = 0; i < 2 && !err; i++)
432 err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0);
433
434 for (i = 0; i < 2 && !err; i++)
435 err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, 0);
436 if (err < 0)
437 return err;
438
439 err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, (width >> 8) & 0xff);
440 if (err < 0)
441 return err;
442
443 err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, (width & 0xff));
444 if (err < 0)
445 return err;
446
447 err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0);
448 return err;
449 }
450
451 static int po1030_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
452 {
453 struct sd *sd = (struct sd *) gspca_dev;
454 s32 *sensor_settings = sd->sensor_priv;
455
456 *val = sensor_settings[EXPOSURE_IDX];
457 PDEBUG(D_V4L2, "Exposure read as %d", *val);
458 return 0;
459 }
460
461 static int po1030_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
462 {
463 struct sd *sd = (struct sd *) gspca_dev;
464 s32 *sensor_settings = sd->sensor_priv;
465 u8 i2c_data;
466 int err;
467
468 sensor_settings[EXPOSURE_IDX] = val;
469 PDEBUG(D_V4L2, "Set exposure to %d", val & 0xffff);
470
471 i2c_data = ((val & 0xff00) >> 8);
472 PDEBUG(D_V4L2, "Set exposure to high byte to 0x%x",
473 i2c_data);
474
475 err = m5602_write_sensor(sd, PO1030_INTEGLINES_H,
476 &i2c_data, 1);
477 if (err < 0)
478 return err;
479
480 i2c_data = (val & 0xff);
481 PDEBUG(D_V4L2, "Set exposure to low byte to 0x%x",
482 i2c_data);
483 err = m5602_write_sensor(sd, PO1030_INTEGLINES_M,
484 &i2c_data, 1);
485
486 return err;
487 }
488
489 static int po1030_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
490 {
491 struct sd *sd = (struct sd *) gspca_dev;
492 s32 *sensor_settings = sd->sensor_priv;
493
494 *val = sensor_settings[GAIN_IDX];
495 PDEBUG(D_V4L2, "Read global gain %d", *val);
496 return 0;
497 }
498
499 static int po1030_set_gain(struct gspca_dev *gspca_dev, __s32 val)
500 {
501 struct sd *sd = (struct sd *) gspca_dev;
502 s32 *sensor_settings = sd->sensor_priv;
503 u8 i2c_data;
504 int err;
505
506 sensor_settings[GAIN_IDX] = val;
507
508 i2c_data = val & 0xff;
509 PDEBUG(D_V4L2, "Set global gain to %d", i2c_data);
510 err = m5602_write_sensor(sd, PO1030_GLOBALGAIN,
511 &i2c_data, 1);
512 return err;
513 }
514
515 static int po1030_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
516 {
517 struct sd *sd = (struct sd *) gspca_dev;
518 s32 *sensor_settings = sd->sensor_priv;
519
520 *val = sensor_settings[HFLIP_IDX];
521 PDEBUG(D_V4L2, "Read hflip %d", *val);
522
523 return 0;
524 }
525
526 static int po1030_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
527 {
528 struct sd *sd = (struct sd *) gspca_dev;
529 s32 *sensor_settings = sd->sensor_priv;
530 u8 i2c_data;
531 int err;
532
533 sensor_settings[HFLIP_IDX] = val;
534
535 PDEBUG(D_V4L2, "Set hflip %d", val);
536 err = m5602_read_sensor(sd, PO1030_CONTROL2, &i2c_data, 1);
537 if (err < 0)
538 return err;
539
540 i2c_data = (0x7f & i2c_data) | ((val & 0x01) << 7);
541
542 err = m5602_write_sensor(sd, PO1030_CONTROL2,
543 &i2c_data, 1);
544
545 return err;
546 }
547
548 static int po1030_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
549 {
550 struct sd *sd = (struct sd *) gspca_dev;
551 s32 *sensor_settings = sd->sensor_priv;
552
553 *val = sensor_settings[VFLIP_IDX];
554 PDEBUG(D_V4L2, "Read vflip %d", *val);
555
556 return 0;
557 }
558
559 static int po1030_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
560 {
561 struct sd *sd = (struct sd *) gspca_dev;
562 s32 *sensor_settings = sd->sensor_priv;
563 u8 i2c_data;
564 int err;
565
566 sensor_settings[VFLIP_IDX] = val;
567
568 PDEBUG(D_V4L2, "Set vflip %d", val);
569 err = m5602_read_sensor(sd, PO1030_CONTROL2, &i2c_data, 1);
570 if (err < 0)
571 return err;
572
573 i2c_data = (i2c_data & 0xbf) | ((val & 0x01) << 6);
574
575 err = m5602_write_sensor(sd, PO1030_CONTROL2,
576 &i2c_data, 1);
577
578 return err;
579 }
580
581 static int po1030_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val)
582 {
583 struct sd *sd = (struct sd *) gspca_dev;
584 s32 *sensor_settings = sd->sensor_priv;
585
586 *val = sensor_settings[RED_BALANCE_IDX];
587 PDEBUG(D_V4L2, "Read red gain %d", *val);
588 return 0;
589 }
590
591 static int po1030_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
592 {
593 struct sd *sd = (struct sd *) gspca_dev;
594 s32 *sensor_settings = sd->sensor_priv;
595 u8 i2c_data;
596 int err;
597
598 sensor_settings[RED_BALANCE_IDX] = val;
599
600 i2c_data = val & 0xff;
601 PDEBUG(D_V4L2, "Set red gain to %d", i2c_data);
602 err = m5602_write_sensor(sd, PO1030_RED_GAIN,
603 &i2c_data, 1);
604 return err;
605 }
606
607 static int po1030_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val)
608 {
609 struct sd *sd = (struct sd *) gspca_dev;
610 s32 *sensor_settings = sd->sensor_priv;
611
612 *val = sensor_settings[BLUE_BALANCE_IDX];
613 PDEBUG(D_V4L2, "Read blue gain %d", *val);
614
615 return 0;
616 }
617
618 static int po1030_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
619 {
620 struct sd *sd = (struct sd *) gspca_dev;
621 s32 *sensor_settings = sd->sensor_priv;
622 u8 i2c_data;
623 int err;
624
625 sensor_settings[BLUE_BALANCE_IDX] = val;
626
627 i2c_data = val & 0xff;
628 PDEBUG(D_V4L2, "Set blue gain to %d", i2c_data);
629 err = m5602_write_sensor(sd, PO1030_BLUE_GAIN,
630 &i2c_data, 1);
631
632 return err;
633 }
634
635 static int po1030_get_green_balance(struct gspca_dev *gspca_dev, __s32 *val)
636 {
637 struct sd *sd = (struct sd *) gspca_dev;
638 s32 *sensor_settings = sd->sensor_priv;
639
640 *val = sensor_settings[GREEN_BALANCE_IDX];
641 PDEBUG(D_V4L2, "Read green gain %d", *val);
642
643 return 0;
644 }
645
646 static int po1030_set_green_balance(struct gspca_dev *gspca_dev, __s32 val)
647 {
648 struct sd *sd = (struct sd *) gspca_dev;
649 s32 *sensor_settings = sd->sensor_priv;
650 u8 i2c_data;
651 int err;
652
653 sensor_settings[GREEN_BALANCE_IDX] = val;
654 i2c_data = val & 0xff;
655 PDEBUG(D_V4L2, "Set green gain to %d", i2c_data);
656
657 err = m5602_write_sensor(sd, PO1030_GREEN_1_GAIN,
658 &i2c_data, 1);
659 if (err < 0)
660 return err;
661
662 return m5602_write_sensor(sd, PO1030_GREEN_2_GAIN,
663 &i2c_data, 1);
664 }
665
666 static int po1030_get_auto_white_balance(struct gspca_dev *gspca_dev,
667 __s32 *val)
668 {
669 struct sd *sd = (struct sd *) gspca_dev;
670 s32 *sensor_settings = sd->sensor_priv;
671
672 *val = sensor_settings[AUTO_WHITE_BALANCE_IDX];
673 PDEBUG(D_V4L2, "Auto white balancing is %d", *val);
674
675 return 0;
676 }
677
678 static int po1030_set_auto_white_balance(struct gspca_dev *gspca_dev,
679 __s32 val)
680 {
681 struct sd *sd = (struct sd *) gspca_dev;
682 s32 *sensor_settings = sd->sensor_priv;
683 u8 i2c_data;
684 int err;
685
686 sensor_settings[AUTO_WHITE_BALANCE_IDX] = val;
687
688 err = m5602_read_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1);
689 if (err < 0)
690 return err;
691
692 PDEBUG(D_V4L2, "Set auto white balance to %d", val);
693 i2c_data = (i2c_data & 0xfe) | (val & 0x01);
694 err = m5602_write_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1);
695 return err;
696 }
697
698 static int po1030_get_auto_exposure(struct gspca_dev *gspca_dev,
699 __s32 *val)
700 {
701 struct sd *sd = (struct sd *) gspca_dev;
702 s32 *sensor_settings = sd->sensor_priv;
703
704 *val = sensor_settings[AUTO_EXPOSURE_IDX];
705 PDEBUG(D_V4L2, "Auto exposure is %d", *val);
706 return 0;
707 }
708
709 static int po1030_set_auto_exposure(struct gspca_dev *gspca_dev,
710 __s32 val)
711 {
712 struct sd *sd = (struct sd *) gspca_dev;
713 s32 *sensor_settings = sd->sensor_priv;
714 u8 i2c_data;
715 int err;
716
717 sensor_settings[AUTO_EXPOSURE_IDX] = val;
718 err = m5602_read_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1);
719 if (err < 0)
720 return err;
721
722 PDEBUG(D_V4L2, "Set auto exposure to %d", val);
723 i2c_data = (i2c_data & 0xfd) | ((val & 0x01) << 1);
724 return m5602_write_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1);
725 }
726
727 void po1030_disconnect(struct sd *sd)
728 {
729 sd->sensor = NULL;
730 kfree(sd->sensor_priv);
731 }
732
733 static void po1030_dump_registers(struct sd *sd)
734 {
735 int address;
736 u8 value = 0;
737
738 pr_info("Dumping the po1030 sensor core registers\n");
739 for (address = 0; address < 0x7f; address++) {
740 m5602_read_sensor(sd, address, &value, 1);
741 pr_info("register 0x%x contains 0x%x\n", address, value);
742 }
743
744 pr_info("po1030 register state dump complete\n");
745
746 pr_info("Probing for which registers that are read/write\n");
747 for (address = 0; address < 0xff; address++) {
748 u8 old_value, ctrl_value;
749 u8 test_value[2] = {0xff, 0xff};
750
751 m5602_read_sensor(sd, address, &old_value, 1);
752 m5602_write_sensor(sd, address, test_value, 1);
753 m5602_read_sensor(sd, address, &ctrl_value, 1);
754
755 if (ctrl_value == test_value[0])
756 pr_info("register 0x%x is writeable\n", address);
757 else
758 pr_info("register 0x%x is read only\n", address);
759
760 /* Restore original value */
761 m5602_write_sensor(sd, address, &old_value, 1);
762 }
763 }