1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
|
/*
* Driver for MT9M111 CMOS Image Sensor from Micron
*
* Copyright (C) 2008, Robert Jarzmik <robert.jarzmik@free.fr>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/videodev2.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/log2.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <media/v4l2-common.h>
#include <media/v4l2-chip-ident.h>
#include <media/soc_camera.h>
/*
* mt9m111 i2c address is 0x5d or 0x48 (depending on SAddr pin)
* The platform has to define i2c_board_info and call i2c_register_board_info()
*/
/* mt9m111: Sensor register addresses */
#define MT9M111_CHIP_VERSION 0x000
#define MT9M111_ROW_START 0x001
#define MT9M111_COLUMN_START 0x002
#define MT9M111_WINDOW_HEIGHT 0x003
#define MT9M111_WINDOW_WIDTH 0x004
#define MT9M111_HORIZONTAL_BLANKING_B 0x005
#define MT9M111_VERTICAL_BLANKING_B 0x006
#define MT9M111_HORIZONTAL_BLANKING_A 0x007
#define MT9M111_VERTICAL_BLANKING_A 0x008
#define MT9M111_SHUTTER_WIDTH 0x009
#define MT9M111_ROW_SPEED 0x00a
#define MT9M111_EXTRA_DELAY 0x00b
#define MT9M111_SHUTTER_DELAY 0x00c
#define MT9M111_RESET 0x00d
#define MT9M111_READ_MODE_B 0x020
#define MT9M111_READ_MODE_A 0x021
#define MT9M111_FLASH_CONTROL 0x023
#define MT9M111_GREEN1_GAIN 0x02b
#define MT9M111_BLUE_GAIN 0x02c
#define MT9M111_RED_GAIN 0x02d
#define MT9M111_GREEN2_GAIN 0x02e
#define MT9M111_GLOBAL_GAIN 0x02f
#define MT9M111_CONTEXT_CONTROL 0x0c8
#define MT9M111_PAGE_MAP 0x0f0
#define MT9M111_BYTE_WISE_ADDR 0x0f1
#define MT9M111_RESET_SYNC_CHANGES (1 << 15)
#define MT9M111_RESET_RESTART_BAD_FRAME (1 << 9)
#define MT9M111_RESET_SHOW_BAD_FRAMES (1 << 8)
#define MT9M111_RESET_RESET_SOC (1 << 5)
#define MT9M111_RESET_OUTPUT_DISABLE (1 << 4)
#define MT9M111_RESET_CHIP_ENABLE (1 << 3)
#define MT9M111_RESET_ANALOG_STANDBY (1 << 2)
#define MT9M111_RESET_RESTART_FRAME (1 << 1)
#define MT9M111_RESET_RESET_MODE (1 << 0)
#define MT9M111_RMB_MIRROR_COLS (1 << 1)
#define MT9M111_RMB_MIRROR_ROWS (1 << 0)
#define MT9M111_CTXT_CTRL_RESTART (1 << 15)
#define MT9M111_CTXT_CTRL_DEFECTCOR_B (1 << 12)
#define MT9M111_CTXT_CTRL_RESIZE_B (1 << 10)
#define MT9M111_CTXT_CTRL_CTRL2_B (1 << 9)
#define MT9M111_CTXT_CTRL_GAMMA_B (1 << 8)
#define MT9M111_CTXT_CTRL_XENON_EN (1 << 7)
#define MT9M111_CTXT_CTRL_READ_MODE_B (1 << 3)
#define MT9M111_CTXT_CTRL_LED_FLASH_EN (1 << 2)
#define MT9M111_CTXT_CTRL_VBLANK_SEL_B (1 << 1)
#define MT9M111_CTXT_CTRL_HBLANK_SEL_B (1 << 0)
/*
* mt9m111: Colorpipe register addresses (0x100..0x1ff)
*/
#define MT9M111_OPER_MODE_CTRL 0x106
#define MT9M111_OUTPUT_FORMAT_CTRL 0x108
#define MT9M111_REDUCER_XZOOM_B 0x1a0
#define MT9M111_REDUCER_XSIZE_B 0x1a1
#define MT9M111_REDUCER_YZOOM_B 0x1a3
#define MT9M111_REDUCER_YSIZE_B 0x1a4
#define MT9M111_REDUCER_XZOOM_A 0x1a6
#define MT9M111_REDUCER_XSIZE_A 0x1a7
#define MT9M111_REDUCER_YZOOM_A 0x1a9
#define MT9M111_REDUCER_YSIZE_A 0x1aa
#define MT9M111_OUTPUT_FORMAT_CTRL2_A 0x13a
#define MT9M111_OUTPUT_FORMAT_CTRL2_B 0x19b
#define MT9M111_OPMODE_AUTOEXPO_EN (1 << 14)
#define MT9M111_OUTFMT_PROCESSED_BAYER (1 << 14)
#define MT9M111_OUTFMT_BYPASS_IFP (1 << 10)
#define MT9M111_OUTFMT_INV_PIX_CLOCK (1 << 9)
#define MT9M111_OUTFMT_RGB (1 << 8)
#define MT9M111_OUTFMT_RGB565 (0x0 << 6)
#define MT9M111_OUTFMT_RGB555 (0x1 << 6)
#define MT9M111_OUTFMT_RGB444x (0x2 << 6)
#define MT9M111_OUTFMT_RGBx444 (0x3 << 6)
#define MT9M111_OUTFMT_TST_RAMP_OFF (0x0 << 4)
#define MT9M111_OUTFMT_TST_RAMP_COL (0x1 << 4)
#define MT9M111_OUTFMT_TST_RAMP_ROW (0x2 << 4)
#define MT9M111_OUTFMT_TST_RAMP_FRAME (0x3 << 4)
#define MT9M111_OUTFMT_SHIFT_3_UP (1 << 3)
#define MT9M111_OUTFMT_AVG_CHROMA (1 << 2)
#define MT9M111_OUTFMT_SWAP_YCbCr_C_Y (1 << 1)
#define MT9M111_OUTFMT_SWAP_RGB_EVEN (1 << 1)
#define MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr (1 << 0)
/*
* mt9m111: Camera control register addresses (0x200..0x2ff not implemented)
*/
#define reg_read(reg) mt9m111_reg_read(icd, MT9M111_##reg)
#define reg_write(reg, val) mt9m111_reg_write(icd, MT9M111_##reg, (val))
#define reg_set(reg, val) mt9m111_reg_set(icd, MT9M111_##reg, (val))
#define reg_clear(reg, val) mt9m111_reg_clear(icd, MT9M111_##reg, (val))
#define MT9M111_MIN_DARK_ROWS 8
#define MT9M111_MIN_DARK_COLS 24
#define MT9M111_MAX_HEIGHT 1024
#define MT9M111_MAX_WIDTH 1280
#define COL_FMT(_name, _depth, _fourcc, _colorspace) \
{ .name = _name, .depth = _depth, .fourcc = _fourcc, \
.colorspace = _colorspace }
#define RGB_FMT(_name, _depth, _fourcc) \
COL_FMT(_name, _depth, _fourcc, V4L2_COLORSPACE_SRGB)
static const struct soc_camera_data_format mt9m111_colour_formats[] = {
COL_FMT("YCrYCb 8 bit", 8, V4L2_PIX_FMT_YUYV, V4L2_COLORSPACE_JPEG),
RGB_FMT("RGB 565", 16, V4L2_PIX_FMT_RGB565),
RGB_FMT("RGB 555", 16, V4L2_PIX_FMT_RGB555),
RGB_FMT("Bayer (sRGB) 10 bit", 10, V4L2_PIX_FMT_SBGGR16),
RGB_FMT("Bayer (sRGB) 8 bit", 8, V4L2_PIX_FMT_SBGGR8),
};
enum mt9m111_context {
HIGHPOWER = 0,
LOWPOWER,
};
struct mt9m111 {
struct i2c_client *client;
struct soc_camera_device icd;
int model; /* V4L2_IDENT_MT9M111* codes from v4l2-chip-ident.h */
enum mt9m111_context context;
unsigned int left, top, width, height;
u32 pixfmt;
unsigned char autoexposure;
unsigned char datawidth;
unsigned int powered:1;
unsigned int hflip:1;
unsigned int vflip:1;
unsigned int swap_rgb_even_odd:1;
unsigned int swap_rgb_red_blue:1;
unsigned int swap_yuv_y_chromas:1;
unsigned int swap_yuv_cb_cr:1;
};
static int reg_page_map_set(struct i2c_client *client, const u16 reg)
{
int ret;
u16 page;
static int lastpage = -1; /* PageMap cache value */
page = (reg >> 8);
if (page == lastpage)
return 0;
if (page > 2)
return -EINVAL;
ret = i2c_smbus_write_word_data(client, MT9M111_PAGE_MAP, swab16(page));
if (!ret)
lastpage = page;
return ret;
}
static int mt9m111_reg_read(struct soc_camera_device *icd, const u16 reg)
{
struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
struct i2c_client *client = mt9m111->client;
int ret;
ret = reg_page_map_set(client, reg);
if (!ret)
ret = swab16(i2c_smbus_read_word_data(client, (reg & 0xff)));
dev_dbg(&icd->dev, "read reg.%03x -> %04x\n", reg, ret);
return ret;
}
static int mt9m111_reg_write(struct soc_camera_device *icd, const u16 reg,
const u16 data)
{
struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
struct i2c_client *client = mt9m111->client;
int ret;
ret = reg_page_map_set(client, reg);
if (!ret)
ret = i2c_smbus_write_word_data(mt9m111->client, (reg & 0xff),
swab16(data));
dev_dbg(&am
|