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m5602_mt9m111.c
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1 /*
2  * Driver for the mt9m111 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 <[email protected]>
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_mt9m111.h"
22 
23 static int mt9m111_set_vflip(struct gspca_dev *gspca_dev, __s32 val);
24 static int mt9m111_get_vflip(struct gspca_dev *gspca_dev, __s32 *val);
25 static int mt9m111_get_hflip(struct gspca_dev *gspca_dev, __s32 *val);
26 static int mt9m111_set_hflip(struct gspca_dev *gspca_dev, __s32 val);
27 static int mt9m111_get_gain(struct gspca_dev *gspca_dev, __s32 *val);
28 static int mt9m111_set_gain(struct gspca_dev *gspca_dev, __s32 val);
29 static int mt9m111_set_auto_white_balance(struct gspca_dev *gspca_dev,
30  __s32 val);
31 static int mt9m111_get_auto_white_balance(struct gspca_dev *gspca_dev,
32  __s32 *val);
33 static int mt9m111_get_green_balance(struct gspca_dev *gspca_dev, __s32 *val);
34 static int mt9m111_set_green_balance(struct gspca_dev *gspca_dev, __s32 val);
35 static int mt9m111_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val);
36 static int mt9m111_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val);
37 static int mt9m111_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val);
38 static int mt9m111_set_red_balance(struct gspca_dev *gspca_dev, __s32 val);
39 
40 static struct v4l2_pix_format mt9m111_modes[] = {
41  {
42  640,
43  480,
44  V4L2_PIX_FMT_SBGGR8,
45  V4L2_FIELD_NONE,
46  .sizeimage = 640 * 480,
47  .bytesperline = 640,
48  .colorspace = V4L2_COLORSPACE_SRGB,
49  .priv = 0
50  }
51 };
52 
53 static const struct ctrl mt9m111_ctrls[] = {
54 #define VFLIP_IDX 0
55  {
56  {
57  .id = V4L2_CID_VFLIP,
58  .type = V4L2_CTRL_TYPE_BOOLEAN,
59  .name = "vertical flip",
60  .minimum = 0,
61  .maximum = 1,
62  .step = 1,
63  .default_value = 0
64  },
65  .set = mt9m111_set_vflip,
66  .get = mt9m111_get_vflip
67  },
68 #define HFLIP_IDX 1
69  {
70  {
71  .id = V4L2_CID_HFLIP,
72  .type = V4L2_CTRL_TYPE_BOOLEAN,
73  .name = "horizontal flip",
74  .minimum = 0,
75  .maximum = 1,
76  .step = 1,
77  .default_value = 0
78  },
79  .set = mt9m111_set_hflip,
80  .get = mt9m111_get_hflip
81  },
82 #define GAIN_IDX 2
83  {
84  {
85  .id = V4L2_CID_GAIN,
86  .type = V4L2_CTRL_TYPE_INTEGER,
87  .name = "gain",
88  .minimum = 0,
89  .maximum = (INITIAL_MAX_GAIN - 1) * 2 * 2 * 2,
90  .step = 1,
91  .default_value = MT9M111_DEFAULT_GAIN,
92  .flags = V4L2_CTRL_FLAG_SLIDER
93  },
94  .set = mt9m111_set_gain,
95  .get = mt9m111_get_gain
96  },
97 #define AUTO_WHITE_BALANCE_IDX 3
98  {
99  {
100  .id = V4L2_CID_AUTO_WHITE_BALANCE,
101  .type = V4L2_CTRL_TYPE_BOOLEAN,
102  .name = "auto white balance",
103  .minimum = 0,
104  .maximum = 1,
105  .step = 1,
106  .default_value = 0,
107  },
108  .set = mt9m111_set_auto_white_balance,
109  .get = mt9m111_get_auto_white_balance
110  },
111 #define GREEN_BALANCE_IDX 4
112  {
113  {
114  .id = M5602_V4L2_CID_GREEN_BALANCE,
115  .type = V4L2_CTRL_TYPE_INTEGER,
116  .name = "green balance",
117  .minimum = 0x00,
118  .maximum = 0x7ff,
119  .step = 0x1,
120  .default_value = MT9M111_GREEN_GAIN_DEFAULT,
121  .flags = V4L2_CTRL_FLAG_SLIDER
122  },
123  .set = mt9m111_set_green_balance,
124  .get = mt9m111_get_green_balance
125  },
126 #define BLUE_BALANCE_IDX 5
127  {
128  {
129  .id = V4L2_CID_BLUE_BALANCE,
130  .type = V4L2_CTRL_TYPE_INTEGER,
131  .name = "blue balance",
132  .minimum = 0x00,
133  .maximum = 0x7ff,
134  .step = 0x1,
135  .default_value = MT9M111_BLUE_GAIN_DEFAULT,
136  .flags = V4L2_CTRL_FLAG_SLIDER
137  },
138  .set = mt9m111_set_blue_balance,
139  .get = mt9m111_get_blue_balance
140  },
141 #define RED_BALANCE_IDX 5
142  {
143  {
144  .id = V4L2_CID_RED_BALANCE,
145  .type = V4L2_CTRL_TYPE_INTEGER,
146  .name = "red balance",
147  .minimum = 0x00,
148  .maximum = 0x7ff,
149  .step = 0x1,
150  .default_value = MT9M111_RED_GAIN_DEFAULT,
151  .flags = V4L2_CTRL_FLAG_SLIDER
152  },
153  .set = mt9m111_set_red_balance,
154  .get = mt9m111_get_red_balance
155  },
156 };
157 
158 static void mt9m111_dump_registers(struct sd *sd);
159 
160 int mt9m111_probe(struct sd *sd)
161 {
162  u8 data[2] = {0x00, 0x00};
163  int i;
164  s32 *sensor_settings;
165 
166  if (force_sensor) {
167  if (force_sensor == MT9M111_SENSOR) {
168  pr_info("Forcing a %s sensor\n", mt9m111.name);
169  goto sensor_found;
170  }
171  /* If we want to force another sensor, don't try to probe this
172  * one */
173  return -ENODEV;
174  }
175 
176  PDEBUG(D_PROBE, "Probing for a mt9m111 sensor");
177 
178  /* Do the preinit */
179  for (i = 0; i < ARRAY_SIZE(preinit_mt9m111); i++) {
180  if (preinit_mt9m111[i][0] == BRIDGE) {
181  m5602_write_bridge(sd,
182  preinit_mt9m111[i][1],
183  preinit_mt9m111[i][2]);
184  } else {
185  data[0] = preinit_mt9m111[i][2];
186  data[1] = preinit_mt9m111[i][3];
187  m5602_write_sensor(sd,
188  preinit_mt9m111[i][1], data, 2);
189  }
190  }
191 
192  if (m5602_read_sensor(sd, MT9M111_SC_CHIPVER, data, 2))
193  return -ENODEV;
194 
195  if ((data[0] == 0x14) && (data[1] == 0x3a)) {
196  pr_info("Detected a mt9m111 sensor\n");
197  goto sensor_found;
198  }
199 
200  return -ENODEV;
201 
202 sensor_found:
203  sensor_settings = kmalloc(ARRAY_SIZE(mt9m111_ctrls) * sizeof(s32),
204  GFP_KERNEL);
205  if (!sensor_settings)
206  return -ENOMEM;
207 
208  sd->gspca_dev.cam.cam_mode = mt9m111_modes;
209  sd->gspca_dev.cam.nmodes = ARRAY_SIZE(mt9m111_modes);
210  sd->desc->ctrls = mt9m111_ctrls;
211  sd->desc->nctrls = ARRAY_SIZE(mt9m111_ctrls);
212 
213  for (i = 0; i < ARRAY_SIZE(mt9m111_ctrls); i++)
214  sensor_settings[i] = mt9m111_ctrls[i].qctrl.default_value;
215  sd->sensor_priv = sensor_settings;
216 
217  return 0;
218 }
219 
220 int mt9m111_init(struct sd *sd)
221 {
222  int i, err = 0;
223  s32 *sensor_settings = sd->sensor_priv;
224 
225  /* Init the sensor */
226  for (i = 0; i < ARRAY_SIZE(init_mt9m111) && !err; i++) {
227  u8 data[2];
228 
229  if (init_mt9m111[i][0] == BRIDGE) {
230  err = m5602_write_bridge(sd,
231  init_mt9m111[i][1],
232  init_mt9m111[i][2]);
233  } else {
234  data[0] = init_mt9m111[i][2];
235  data[1] = init_mt9m111[i][3];
236  err = m5602_write_sensor(sd,
237  init_mt9m111[i][1], data, 2);
238  }
239  }
240 
241  if (dump_sensor)
242  mt9m111_dump_registers(sd);
243 
244  err = mt9m111_set_vflip(&sd->gspca_dev, sensor_settings[VFLIP_IDX]);
245  if (err < 0)
246  return err;
247 
248  err = mt9m111_set_hflip(&sd->gspca_dev, sensor_settings[HFLIP_IDX]);
249  if (err < 0)
250  return err;
251 
252  err = mt9m111_set_green_balance(&sd->gspca_dev,
253  sensor_settings[GREEN_BALANCE_IDX]);
254  if (err < 0)
255  return err;
256 
257  err = mt9m111_set_blue_balance(&sd->gspca_dev,
258  sensor_settings[BLUE_BALANCE_IDX]);
259  if (err < 0)
260  return err;
261 
262  err = mt9m111_set_red_balance(&sd->gspca_dev,
263  sensor_settings[RED_BALANCE_IDX]);
264  if (err < 0)
265  return err;
266 
267  return mt9m111_set_gain(&sd->gspca_dev, sensor_settings[GAIN_IDX]);
268 }
269 
270 int mt9m111_start(struct sd *sd)
271 {
272  int i, err = 0;
273  u8 data[2];
274  struct cam *cam = &sd->gspca_dev.cam;
275  s32 *sensor_settings = sd->sensor_priv;
276 
277  int width = cam->cam_mode[sd->gspca_dev.curr_mode].width - 1;
278  int height = cam->cam_mode[sd->gspca_dev.curr_mode].height;
279 
280  for (i = 0; i < ARRAY_SIZE(start_mt9m111) && !err; i++) {
281  if (start_mt9m111[i][0] == BRIDGE) {
282  err = m5602_write_bridge(sd,
283  start_mt9m111[i][1],
284  start_mt9m111[i][2]);
285  } else {
286  data[0] = start_mt9m111[i][2];
287  data[1] = start_mt9m111[i][3];
288  err = m5602_write_sensor(sd,
289  start_mt9m111[i][1], data, 2);
290  }
291  }
292  if (err < 0)
293  return err;
294 
295  err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height >> 8) & 0xff);
296  if (err < 0)
297  return err;
298 
299  err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height & 0xff));
300  if (err < 0)
301  return err;
302 
303  for (i = 0; i < 2 && !err; i++)
304  err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0);
305  if (err < 0)
306  return err;
307 
308  err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0);
309  if (err < 0)
310  return err;
311 
312  err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 2);
313  if (err < 0)
314  return err;
315 
316  for (i = 0; i < 2 && !err; i++)
317  err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, 0);
318  if (err < 0)
319  return err;
320 
321  err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA,
322  (width >> 8) & 0xff);
323  if (err < 0)
324  return err;
325 
326  err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, width & 0xff);
327  if (err < 0)
328  return err;
329 
330  err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0);
331  if (err < 0)
332  return err;
333 
334  switch (width) {
335  case 640:
336  PDEBUG(D_V4L2, "Configuring camera for VGA mode");
337  data[0] = MT9M111_RMB_OVER_SIZED;
338  data[1] = MT9M111_RMB_ROW_SKIP_2X |
339  MT9M111_RMB_COLUMN_SKIP_2X |
340  (sensor_settings[VFLIP_IDX] << 0) |
341  (sensor_settings[HFLIP_IDX] << 1);
342 
343  err = m5602_write_sensor(sd,
344  MT9M111_SC_R_MODE_CONTEXT_B, data, 2);
345  break;
346 
347  case 320:
348  PDEBUG(D_V4L2, "Configuring camera for QVGA mode");
349  data[0] = MT9M111_RMB_OVER_SIZED;
350  data[1] = MT9M111_RMB_ROW_SKIP_4X |
351  MT9M111_RMB_COLUMN_SKIP_4X |
352  (sensor_settings[VFLIP_IDX] << 0) |
353  (sensor_settings[HFLIP_IDX] << 1);
354  err = m5602_write_sensor(sd,
355  MT9M111_SC_R_MODE_CONTEXT_B, data, 2);
356  break;
357  }
358  return err;
359 }
360 
361 void mt9m111_disconnect(struct sd *sd)
362 {
363  sd->sensor = NULL;
364  kfree(sd->sensor_priv);
365 }
366 
367 static int mt9m111_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
368 {
369  struct sd *sd = (struct sd *) gspca_dev;
370  s32 *sensor_settings = sd->sensor_priv;
371 
372  *val = sensor_settings[VFLIP_IDX];
373  PDEBUG(D_V4L2, "Read vertical flip %d", *val);
374 
375  return 0;
376 }
377 
378 static int mt9m111_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
379 {
380  int err;
381  u8 data[2] = {0x00, 0x00};
382  struct sd *sd = (struct sd *) gspca_dev;
383  s32 *sensor_settings = sd->sensor_priv;
384 
385  PDEBUG(D_V4L2, "Set vertical flip to %d", val);
386 
387  sensor_settings[VFLIP_IDX] = val;
388 
389  /* The mt9m111 is flipped by default */
390  val = !val;
391 
392  /* Set the correct page map */
393  err = m5602_write_sensor(sd, MT9M111_PAGE_MAP, data, 2);
394  if (err < 0)
395  return err;
396 
397  err = m5602_read_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B, data, 2);
398  if (err < 0)
399  return err;
400 
401  data[1] = (data[1] & 0xfe) | val;
402  err = m5602_write_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B,
403  data, 2);
404  return err;
405 }
406 
407 static int mt9m111_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
408 {
409  struct sd *sd = (struct sd *) gspca_dev;
410  s32 *sensor_settings = sd->sensor_priv;
411 
412  *val = sensor_settings[HFLIP_IDX];
413  PDEBUG(D_V4L2, "Read horizontal flip %d", *val);
414 
415  return 0;
416 }
417 
418 static int mt9m111_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
419 {
420  int err;
421  u8 data[2] = {0x00, 0x00};
422  struct sd *sd = (struct sd *) gspca_dev;
423  s32 *sensor_settings = sd->sensor_priv;
424 
425  PDEBUG(D_V4L2, "Set horizontal flip to %d", val);
426 
427  sensor_settings[HFLIP_IDX] = val;
428 
429  /* The mt9m111 is flipped by default */
430  val = !val;
431 
432  /* Set the correct page map */
433  err = m5602_write_sensor(sd, MT9M111_PAGE_MAP, data, 2);
434  if (err < 0)
435  return err;
436 
437  err = m5602_read_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B, data, 2);
438  if (err < 0)
439  return err;
440 
441  data[1] = (data[1] & 0xfd) | ((val << 1) & 0x02);
442  err = m5602_write_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B,
443  data, 2);
444  return err;
445 }
446 
447 static int mt9m111_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
448 {
449  struct sd *sd = (struct sd *) gspca_dev;
450  s32 *sensor_settings = sd->sensor_priv;
451 
452  *val = sensor_settings[GAIN_IDX];
453  PDEBUG(D_V4L2, "Read gain %d", *val);
454 
455  return 0;
456 }
457 
458 static int mt9m111_set_auto_white_balance(struct gspca_dev *gspca_dev,
459  __s32 val)
460 {
461  struct sd *sd = (struct sd *) gspca_dev;
462  s32 *sensor_settings = sd->sensor_priv;
463  int err;
464  u8 data[2];
465 
466  err = m5602_read_sensor(sd, MT9M111_CP_OPERATING_MODE_CTL, data, 2);
467  if (err < 0)
468  return err;
469 
470  sensor_settings[AUTO_WHITE_BALANCE_IDX] = val & 0x01;
471  data[1] = ((data[1] & 0xfd) | ((val & 0x01) << 1));
472 
473  err = m5602_write_sensor(sd, MT9M111_CP_OPERATING_MODE_CTL, data, 2);
474 
475  PDEBUG(D_V4L2, "Set auto white balance %d", val);
476  return err;
477 }
478 
479 static int mt9m111_get_auto_white_balance(struct gspca_dev *gspca_dev,
480  __s32 *val) {
481  struct sd *sd = (struct sd *) gspca_dev;
482  s32 *sensor_settings = sd->sensor_priv;
483 
484  *val = sensor_settings[AUTO_WHITE_BALANCE_IDX];
485  PDEBUG(D_V4L2, "Read auto white balance %d", *val);
486  return 0;
487 }
488 
489 static int mt9m111_set_gain(struct gspca_dev *gspca_dev, __s32 val)
490 {
491  int err, tmp;
492  u8 data[2] = {0x00, 0x00};
493  struct sd *sd = (struct sd *) gspca_dev;
494  s32 *sensor_settings = sd->sensor_priv;
495 
496  sensor_settings[GAIN_IDX] = val;
497 
498  /* Set the correct page map */
499  err = m5602_write_sensor(sd, MT9M111_PAGE_MAP, data, 2);
500  if (err < 0)
501  return err;
502 
503  if (val >= INITIAL_MAX_GAIN * 2 * 2 * 2)
504  return -EINVAL;
505 
506  if ((val >= INITIAL_MAX_GAIN * 2 * 2) &&
507  (val < (INITIAL_MAX_GAIN - 1) * 2 * 2 * 2))
508  tmp = (1 << 10) | (val << 9) |
509  (val << 8) | (val / 8);
510  else if ((val >= INITIAL_MAX_GAIN * 2) &&
511  (val < INITIAL_MAX_GAIN * 2 * 2))
512  tmp = (1 << 9) | (1 << 8) | (val / 4);
513  else if ((val >= INITIAL_MAX_GAIN) &&
514  (val < INITIAL_MAX_GAIN * 2))
515  tmp = (1 << 8) | (val / 2);
516  else
517  tmp = val;
518 
519  data[1] = (tmp & 0xff);
520  data[0] = (tmp & 0xff00) >> 8;
521  PDEBUG(D_V4L2, "tmp=%d, data[1]=%d, data[0]=%d", tmp,
522  data[1], data[0]);
523 
524  err = m5602_write_sensor(sd, MT9M111_SC_GLOBAL_GAIN,
525  data, 2);
526 
527  return err;
528 }
529 
530 static int mt9m111_set_green_balance(struct gspca_dev *gspca_dev, __s32 val)
531 {
532  int err;
533  u8 data[2];
534  struct sd *sd = (struct sd *) gspca_dev;
535  s32 *sensor_settings = sd->sensor_priv;
536 
537  sensor_settings[GREEN_BALANCE_IDX] = val;
538  data[1] = (val & 0xff);
539  data[0] = (val & 0xff00) >> 8;
540 
541  PDEBUG(D_V4L2, "Set green balance %d", val);
542  err = m5602_write_sensor(sd, MT9M111_SC_GREEN_1_GAIN,
543  data, 2);
544  if (err < 0)
545  return err;
546 
547  return m5602_write_sensor(sd, MT9M111_SC_GREEN_2_GAIN,
548  data, 2);
549 }
550 
551 static int mt9m111_get_green_balance(struct gspca_dev *gspca_dev, __s32 *val)
552 {
553  struct sd *sd = (struct sd *) gspca_dev;
554  s32 *sensor_settings = sd->sensor_priv;
555 
556  *val = sensor_settings[GREEN_BALANCE_IDX];
557  PDEBUG(D_V4L2, "Read green balance %d", *val);
558  return 0;
559 }
560 
561 static int mt9m111_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
562 {
563  u8 data[2];
564  struct sd *sd = (struct sd *) gspca_dev;
565  s32 *sensor_settings = sd->sensor_priv;
566 
567  sensor_settings[BLUE_BALANCE_IDX] = val;
568  data[1] = (val & 0xff);
569  data[0] = (val & 0xff00) >> 8;
570 
571  PDEBUG(D_V4L2, "Set blue balance %d", val);
572 
573  return m5602_write_sensor(sd, MT9M111_SC_BLUE_GAIN,
574  data, 2);
575 }
576 
577 static int mt9m111_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val)
578 {
579  struct sd *sd = (struct sd *) gspca_dev;
580  s32 *sensor_settings = sd->sensor_priv;
581 
582  *val = sensor_settings[BLUE_BALANCE_IDX];
583  PDEBUG(D_V4L2, "Read blue balance %d", *val);
584  return 0;
585 }
586 
587 static int mt9m111_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
588 {
589  u8 data[2];
590  struct sd *sd = (struct sd *) gspca_dev;
591  s32 *sensor_settings = sd->sensor_priv;
592 
593  sensor_settings[RED_BALANCE_IDX] = val;
594  data[1] = (val & 0xff);
595  data[0] = (val & 0xff00) >> 8;
596 
597  PDEBUG(D_V4L2, "Set red balance %d", val);
598 
599  return m5602_write_sensor(sd, MT9M111_SC_RED_GAIN,
600  data, 2);
601 }
602 
603 static int mt9m111_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val)
604 {
605  struct sd *sd = (struct sd *) gspca_dev;
606  s32 *sensor_settings = sd->sensor_priv;
607 
608  *val = sensor_settings[RED_BALANCE_IDX];
609  PDEBUG(D_V4L2, "Read red balance %d", *val);
610  return 0;
611 }
612 
613 static void mt9m111_dump_registers(struct sd *sd)
614 {
615  u8 address, value[2] = {0x00, 0x00};
616 
617  pr_info("Dumping the mt9m111 register state\n");
618 
619  pr_info("Dumping the mt9m111 sensor core registers\n");
620  value[1] = MT9M111_SENSOR_CORE;
621  m5602_write_sensor(sd, MT9M111_PAGE_MAP, value, 2);
622  for (address = 0; address < 0xff; address++) {
623  m5602_read_sensor(sd, address, value, 2);
624  pr_info("register 0x%x contains 0x%x%x\n",
625  address, value[0], value[1]);
626  }
627 
628  pr_info("Dumping the mt9m111 color pipeline registers\n");
629  value[1] = MT9M111_COLORPIPE;
630  m5602_write_sensor(sd, MT9M111_PAGE_MAP, value, 2);
631  for (address = 0; address < 0xff; address++) {
632  m5602_read_sensor(sd, address, value, 2);
633  pr_info("register 0x%x contains 0x%x%x\n",
634  address, value[0], value[1]);
635  }
636 
637  pr_info("Dumping the mt9m111 camera control registers\n");
638  value[1] = MT9M111_CAMERA_CONTROL;
639  m5602_write_sensor(sd, MT9M111_PAGE_MAP, value, 2);
640  for (address = 0; address < 0xff; address++) {
641  m5602_read_sensor(sd, address, value, 2);
642  pr_info("register 0x%x contains 0x%x%x\n",
643  address, value[0], value[1]);
644  }
645 
646  pr_info("mt9m111 register state dump complete\n");
647 }
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