aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/media/video/mt9m111.c
blob: fc5e2de037663abcc3fd84e9c5d32bca71183ef9 (plain) (blame)
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
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
/*
 * Driver for MT9M111/MT9M112 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 and mt9m112 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_OPMODE_AUTOWHITEBAL_EN	(1 << 1)

#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(client, MT9M111_##reg)
#define reg_write(reg, val) mt9m111_reg_write(client, MT9M111_##reg, (val))
#define reg_set(reg, val) mt9m111_reg_set(client, MT9M111_##reg, (val))
#define reg_clear(reg, val) mt9m111_reg_clear(client, 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)
#define JPG_FMT(_name, _depth, _fourcc) \
	COL_FMT(_name, _depth, _fourcc, V4L2_COLORSPACE_JPEG)

static const struct soc_camera_data_format mt9m111_colour_formats[] = {
	JPG_FMT("CbYCrY 16 bit", 16, V4L2_PIX_FMT_UYVY),
	JPG_FMT("CrYCbY 16 bit", 16, V4L2_PIX_FMT_VYUY),
	JPG_FMT("YCbYCr 16 bit", 16, V4L2_PIX_FMT_YUYV),
	JPG_FMT("YCrYCb 16 bit", 16, V4L2_PIX_FMT_YVYU),
	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_MT9M11x* codes from v4l2-chip-ident.h */
	enum mt9m111_context context;
	struct v4l2_rect rect;
	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;
	unsigned int autowhitebalance: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 i2c_client *client, const u16 reg)
{
	int ret;

	ret = reg_page_map_set(client, reg);
	if (!ret)
		ret = swab16(i2c_smbus_read_word_data(client, (reg & 0xff)));

	dev_dbg(&client->dev, "read  reg.%03x -> %04x\n", reg, ret);
	return ret;
}

static int mt9m111_reg_write(struct i2c_client *client, const u16 reg,
			     const u16 data)
{
	int ret;

	ret = reg_page_map_set(client, reg);
	if (!ret)
		ret = i2c_smbus_write_word_data(client, (reg & 0xff),
						swab16(data));
	dev_dbg(&client->dev, "write reg.%03x = %04x -> %d\n", reg, data, ret);
	return ret;
}

static int mt9m111_reg_set(struct i2c_client *client, const u16 reg,
			   const u16 data)
{
	int ret;

	ret = mt9m111_reg_read(client, reg);
	if (ret >= 0)
		ret = mt9m111_reg_write(client, reg, ret | data);
	return ret;
}

static int mt9m111_reg_clear(struct i2c_client *client, const u16 reg,
			     const u16 data)
{
	int ret;

	ret = mt9m111_reg_read(client, reg);
	return mt9m111_reg_write(client, reg, ret & ~data);
}

static int mt9m111_set_context(struct soc_camera_device *icd,
			       enum mt9m111_context ctxt)
{
	struct i2c_client *client = to_i2c_client(icd->control);
	int valB = MT9M111_CTXT_CTRL_RESTART | MT9M111_CTXT_CTRL_DEFECTCOR_B
		| MT9M111_CTXT_CTRL_RESIZE_B | MT9M111_CTXT_CTRL_CTRL2_B
		| MT9M111_CTXT_CTRL_GAMMA_B | MT9M111_CTXT_CTRL_READ_MODE_B
		| MT9M111_CTXT_CTRL_VBLANK_SEL_B
		| MT9M111_CTXT_CTRL_HBLANK_SEL_B;
	int valA = MT9M111_CTXT_CTRL_RESTART;

	if (ctxt == HIGHPOWER)
		return reg_write(CONTEXT_CONTROL, valB);
	else
		return reg_write(CONTEXT_CONTROL, valA);
}

static int mt9m111_setup_rect(struct soc_camera_device *icd,
			      struct v4l2_rect *rect)
{
	struct i2c_client *client = to_i2c_client(icd->control);
	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
	int ret, is_raw_format;
	int width = rect->width;
	int height = rect->height;

	if ((mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR8)
	    || (mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR16))
		is_raw_format = 1;
	else
		is_raw_format = 0;

	ret = reg_write(COLUMN_START, rect->left);
	if (!ret)
		ret = reg_write(ROW_START, rect->top);

	if (is_raw_format) {
		if (!ret)
			ret = reg_write(WINDOW_WIDTH, width);
		if (!ret)
			ret = reg_write(WINDOW_HEIGHT, height);
	} else {
		if (!ret)
			ret = reg_write(REDUCER_XZOOM_B, MT9M111_MAX_WIDTH);
		if (!ret)
			ret = reg_write(REDUCER_YZOOM_B, MT9M111_MAX_HEIGHT);
		if (!ret)
			ret = reg_write(REDUCER_XSIZE_B, width);
		if (!ret)
			ret = reg_write(REDUCER_YSIZE_B, height);
		if (!ret)
			ret = reg_write(REDUCER_XZOOM_A, MT9M111_MAX_WIDTH);
		if (!ret)
			ret = reg_write(REDUCER_YZOOM_A, MT9M111_MAX_HEIGHT);
		if (!ret)
			ret = reg_write(REDUCER_XSIZE_A, width);
		if (!ret)
			ret = reg_write(REDUCER_YSIZE_A, height);
	}

	return ret;
}

static int mt9m111_setup_pixfmt(struct soc_camera_device *icd, u16 outfmt)
{
	struct i2c_client *client = to_i2c_client(icd->control);
	int ret;

	ret = reg_write(OUTPUT_FORMAT_CTRL2_A, outfmt);
	if (!ret)
		ret = reg_write(OUTPUT_FORMAT_CTRL2_B, outfmt);
	return ret;
}

static int mt9m111_setfmt_bayer8(struct soc_camera_device *icd)
{
	return mt9m111_setup_pixfmt(icd, MT9M111_OUTFMT_PROCESSED_BAYER);
}

static int mt9m111_setfmt_bayer10(struct soc_camera_device *icd)
{
	return mt9m111_setup_pixfmt(icd, MT9M111_OUTFMT_BYPASS_IFP);
}

static int mt9m111_setfmt_rgb565(struct soc_camera_device *icd)
{
	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
	int val = 0;

	if (mt9m111->swap_rgb_red_blue)
		val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
	if (mt9m111->swap_rgb_even_odd)
		val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
	val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565;

	return mt9m111_setup_pixfmt(icd, val);
}

static int mt9m111_setfmt_rgb555(struct soc_camera_device *icd)
{
	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
	int val = 0;

	if (mt9m111->swap_rgb_red_blue)
		val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
	if (mt9m111->swap_rgb_even_odd)
		val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
	val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555;

	return mt9m111_setup_pixfmt(icd, val);
}

static int mt9m111_setfmt_yuv(struct soc_camera_device *icd)
{
	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
	int val = 0;

	if (mt9m111->swap_yuv_cb_cr)
		val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
	if (mt9m111->swap_yuv_y_chromas)
		val |= MT9M111_OUTFMT_SWAP_YCbCr_C_Y;

	return mt9m111_setup_pixfmt(icd, val);
}

static int mt9m111_enable(struct soc_camera_device *icd)
{
	struct i2c_client *client = to_i2c_client(icd->control);
	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
	struct soc_camera_link *icl = client->dev.platform_data;
	int ret;

	if (icl->power) {
		ret = icl->power(&client->dev, 1);
		if (ret < 0) {
			dev_err(icd->vdev->parent,
				"Platform failed to power-on the camera.\n");
			return ret;
		}
	}

	ret = reg_set(RESET, MT9M111_RESET_CHIP_ENABLE);
	if (!ret)
		mt9m111->powered = 1;
	return ret;
}

static int mt9m111_disable(struct soc_camera_device *icd)
{
	struct i2c_client *client = to_i2c_client(icd->control);
	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
	struct soc_camera_link *icl = client->dev.platform_data;
	int ret;

	ret = reg_clear(RESET, MT9M111_RESET_CHIP_ENABLE);
	if (!ret)
		mt9m111->powered = 0;

	if (icl->power)
		icl->power(&client->dev, 0);

	return ret;
}

static int mt9m111_reset(struct soc_camera_device *icd)
{
	struct i2c_client *client = to_i2c_client(icd->control);
	struct soc_camera_link *icl = client->dev.platform_data;
	int ret;

	ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
	if (!ret)
		ret = reg_set(RESET, MT9M111_RESET_RESET_SOC);
	if (!ret)
		ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE
				| MT9M111_RESET_RESET_SOC);

	if (icl->reset)
		icl->reset(&client->dev);

	return ret;
}

static int mt9m111_start_capture(struct soc_camera_device *icd)
{
	return 0;
}

static int mt9m111_stop_capture(struct soc_camera_device *icd)
{
	return 0;
}

static unsigned long mt9m111_query_bus_param(struct soc_camera_device *icd)
{
	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
	struct soc_camera_link *icl = mt9m111->client->dev.platform_data;
	unsigned long flags = SOCAM_MASTER | SOCAM_PCLK_SAMPLE_RISING |
		SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH |
		SOCAM_DATA_ACTIVE_HIGH | SOCAM_DATAWIDTH_8;

	return soc_camera_apply_sensor_flags(icl, flags);
}

static int mt9m111_set_bus_param(struct soc_camera_device *icd, unsigned long f)
{
	return 0;
}

static int mt9m111_set_crop(struct soc_camera_device *icd,
			    struct v4l2_rect *rect)
{
	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
	int ret;

	dev_dbg(&icd->dev, "%s left=%d, top=%d, width=%d, height=%d\n",
		__func__, rect->left, rect->top, rect->width,
		rect->height);

	ret = mt9m111_setup_rect(icd, rect);
	if (!ret)
		mt9m111->rect = *rect;
	return ret;
}

static int mt9m111_set_pixfmt(struct soc_camera_device *icd, u32 pixfmt)
{
	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
	int ret;

	switch (pixfmt) {
	case V4L2_PIX_FMT_SBGGR8:
		ret = mt9m111_setfmt_bayer8(icd);
		break;
	case V4L2_PIX_FMT_SBGGR16:
		ret = mt9m111_setfmt_bayer10(icd);
		break;
	case V4L2_PIX_FMT_RGB555:
		ret = mt9m111_setfmt_rgb555(icd);
		break;
	case V4L2_PIX_FMT_RGB565:
		ret = mt9m111_setfmt_rgb565(icd);
		break;
	case V4L2_PIX_FMT_UYVY:
		mt9m111->swap_yuv_y_chromas = 0;
		mt9m111->swap_yuv_cb_cr = 0;
		ret = mt9m111_setfmt_yuv(icd);
		break;
	case V4L2_PIX_FMT_VYUY:
		mt9m111->swap_yuv_y_chromas = 0;
		mt9m111->swap_yuv_cb_cr = 1;
		ret = mt9m111_setfmt_yuv(icd);
		break;
	case V4L2_PIX_FMT_YUYV:
		mt9m111->swap_yuv_y_chromas = 1;
		mt9m111->swap_yuv_cb_cr = 0;
		ret = mt9m111_setfmt_yuv(icd);
		break;
	case V4L2_PIX_FMT_YVYU:
		mt9m111->swap_yuv_y_chromas = 1;
		mt9m111->swap_yuv_cb_cr = 1;
		ret = mt9m111_setfmt_yuv(icd);
		break;
	default:
		dev_err(&icd->dev, "Pixel format not handled : %x\n", pixfmt);
		ret = -EINVAL;
	}

	if (!ret)
		mt9m111->pixfmt = pixfmt;

	return ret;
}

static int mt9m111_set_fmt(struct soc_camera_device *icd,
			   struct v4l2_format *f)
{
	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
	struct v4l2_pix_format *pix = &f->fmt.pix;
	struct v4l2_rect rect = {
		.left	= mt9m111->rect.left,
		.top	= mt9m111->rect.top,
		.width	= pix->width,
		.height	= pix->height,
	};
	int ret;

	dev_dbg(&icd->dev, "%s fmt=%x left=%d, top=%d, width=%d, height=%d\n",
		__func__, pix->pixelformat, rect.left, rect.top, rect.width,
		rect.height);

	ret = mt9m111_setup_rect(icd, &rect);
	if (!ret)
		ret = mt9m111_set_pixfmt(icd, pix->pixelformat);
	if (!ret)
		mt9m111->rect = rect;
	return ret;
}

static int mt9m111_try_fmt(struct soc_camera_device *icd,
			   struct v4l2_format *f)
{
	struct v4l2_pix_format *pix = &f->fmt.pix;

	if (pix->height > MT9M111_MAX_HEIGHT)
		pix->height = MT9M111_MAX_HEIGHT;
	if (pix->width > MT9M111_MAX_WIDTH)
		pix->width = MT9M111_MAX_WIDTH;

	return 0;
}

static int mt9m111_get_chip_id(struct soc_camera_device *icd,
			       struct v4l2_dbg_chip_ident *id)
{
	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);

	if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
		return -EINVAL;

	if (id->match.addr != mt9m111->client->addr)
		return -ENODEV;

	id->ident	= mt9m111->model;
	id->revision	= 0;

	return 0;
}

#ifdef CONFIG_VIDEO_ADV_DEBUG
static int mt9m111_get_register(struct soc_camera_device *icd,
				struct v4l2_dbg_register *reg)
{
	int val;
	struct i2c_client *client = to_i2c_client(icd->control);

	if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
		return -EINVAL;
	if (reg->match.addr != client->addr)
		return -ENODEV;

	val = mt9m111_reg_read(client, reg->reg);
	reg->size = 2;
	reg->val = (u64)val;

	if (reg->val > 0xffff)
		return -EIO;

	return 0;
}

static int mt9m111_set_register(struct soc_camera_device *icd,
				struct v4l2_dbg_register *reg)
{
	struct i2c_client *client = to_i2c_client(icd->control);

	if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
		return -EINVAL;

	if (reg->match.addr != client->addr)
		return -ENODEV;

	if (mt9m111_reg_write(client, reg->reg, reg->val) < 0)
		return -EIO;

	return 0;
}
#endif

static const struct v4l2_queryctrl mt9m111_controls[] = {
	{
		.id		= V4L2_CID_VFLIP,
		.type		= V4L2_CTRL_TYPE_BOOLEAN,
		.name		= "Flip Verticaly",
		.minimum	= 0,
		.maximum	= 1,
		.step		= 1,
		.default_value	= 0,
	}, {
		.id		= V4L2_CID_HFLIP,
		.type		= V4L2_CTRL_TYPE_BOOLEAN,
		.name		= "Flip Horizontaly",
		.minimum	= 0,
		.maximum	= 1,
		.step		= 1,
		.default_value	= 0,
	}, {	/* gain = 1/32*val (=>gain=1 if val==32) */
		.id		= V4L2_CID_GAIN,
		.type		= V4L2_CTRL_TYPE_INTEGER,
		.name		= "Gain",
		.minimum	= 0,
		.maximum	= 63 * 2 * 2,
		.step		= 1,
		.default_value	= 32,
		.flags		= V4L2_CTRL_FLAG_SLIDER,
	}, {
		.id		= V4L2_CID_EXPOSURE_AUTO,
		.type		= V4L2_CTRL_TYPE_BOOLEAN,
		.name		= "Auto Exposure",
		.minimum	= 0,
		.maximum	= 1,
		.step		= 1,
		.default_value	= 1,
	}
};

static int mt9m111_video_probe(struct soc_camera_device *);
static void mt9m111_video_remove(struct soc_camera_device *);
static int mt9m111_get_control(struct soc_camera_device *,
			       struct v4l2_control *);
static int mt9m111_set_control(struct soc_camera_device *,
			       struct v4l2_control *);
static int mt9m111_resume(struct soc_camera_device *icd);
static int mt9m111_init(struct soc_camera_device *icd);
static int mt9m111_release(struct soc_camera_device *icd);

static struct soc_camera_ops mt9m111_ops = {
	.owner			= THIS_MODULE,
	.probe			= mt9m111_video_probe,
	.remove			= mt9m111_video_remove,
	.init			= mt9m111_init,
	.resume			= mt9m111_resume,
	.release		= mt9m111_release,
	.start_capture		= mt9m111_start_capture,
	.stop_capture		= mt9m111_stop_capture,
	.set_crop		= mt9m111_set_crop,
	.set_fmt		= mt9m111_set_fmt,
	.try_fmt		= mt9m111_try_fmt,
	.query_bus_param	= mt9m111_query_bus_param,
	.set_bus_param		= mt9m111_set_bus_param,
	.controls		= mt9m111_controls,
	.num_controls		= ARRAY_SIZE(mt9m111_controls),
	.get_control		= mt9m111_get_control,
	.set_control		= mt9m111_set_control,
	.get_chip_id		= mt9m111_get_chip_id,
#ifdef CONFIG_VIDEO_ADV_DEBUG
	.get_register		= mt9m111_get_register,
	.set_register		= mt9m111_set_register,
#endif
};

static int mt9m111_set_flip(struct soc_camera_device *icd, int flip, int mask)
{
	struct i2c_client *client = to_i2c_client(icd->control);
	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
	int ret;

	if (mt9m111->context == HIGHPOWER) {
		if (flip)
			ret = reg_set(READ_MODE_B, mask);
		else
			ret = reg_clear(READ_MODE_B, mask);
	} else {
		if (flip)
			ret = reg_set(READ_MODE_A, mask);
		else
			ret = reg_clear(READ_MODE_A, mask);
	}

	return ret;
}

static int mt9m111_get_global_gain(struct soc_camera_device *icd)
{
	struct i2c_client *client = to_i2c_client(icd->control);
	int data;

	data = reg_read(GLOBAL_GAIN);
	if (data >= 0)
		return (data & 0x2f) * (1 << ((data >> 10) & 1)) *
			(1 << ((data >> 9) & 1));
	return data;
}

static int mt9m111_set_global_gain(struct soc_camera_device *icd, int gain)
{
	struct i2c_client *client = to_i2c_client(icd->control);
	u16 val;

	if (gain > 63 * 2 * 2)
		return -EINVAL;

	icd->gain = gain;
	if ((gain >= 64 * 2) && (gain < 63 * 2 * 2))
		val = (1 << 10) | (1 << 9) | (gain / 4);
	else if ((gain >= 64) && (gain < 64 * 2))
		val = (1 << 9) | (gain / 2);
	else
		val = gain;

	return reg_write(GLOBAL_GAIN, val);
}

static int mt9m111_set_autoexposure(struct soc_camera_device *icd, int on)
{
	struct i2c_client *client = to_i2c_client(icd->control);
	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
	int ret;

	if (on)
		ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
	else
		ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);

	if (!ret)
		mt9m111->autoexposure = on;

	return ret;
}

static int mt9m111_set_autowhitebalance(struct soc_camera_device *icd, int on)
{
	struct i2c_client *client = to_i2c_client(icd->control);
	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
	int ret;

	if (on)
		ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
	else
		ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);

	if (!ret)
		mt9m111->autowhitebalance = on;

	return ret;
}

static int mt9m111_get_control(struct soc_camera_device *icd,
			       struct v4l2_control *ctrl)
{
	struct i2c_client *client = to_i2c_client(icd->control);
	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
	int data;

	switch (ctrl->id) {
	case V4L2_CID_VFLIP:
		if (mt9m111->context == HIGHPOWER)
			data = reg_read(READ_MODE_B);
		else
			data = reg_read(READ_MODE_A);

		if (data < 0)
			return -EIO;
		ctrl->value = !!(data & MT9M111_RMB_MIRROR_ROWS);
		break;
	case V4L2_CID_HFLIP:
		if (mt9m111->context == HIGHPOWER)
			data = reg_read(READ_MODE_B);
		else
			data = reg_read(READ_MODE_A);

		if (data < 0)
			return -EIO;
		ctrl->value = !!(data & MT9M111_RMB_MIRROR_COLS);
		break;
	case V4L2_CID_GAIN:
		data = mt9m111_get_global_gain(icd);
		if (data < 0)
			return data;
		ctrl->value = data;
		break;
	case V4L2_CID_EXPOSURE_AUTO:
		ctrl->value = mt9m111->autoexposure;
		break;
	case V4L2_CID_AUTO_WHITE_BALANCE:
		ctrl->value = mt9m111->autowhitebalance;
		break;
	}
	return 0;
}

static int mt9m111_set_control(struct soc_camera_device *icd,
			       struct v4l2_control *ctrl)
{
	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
	const struct v4l2_queryctrl *qctrl;
	int ret;

	qctrl = soc_camera_find_qctrl(&mt9m111_ops, ctrl->id);

	if (!qctrl)
		return -EINVAL;

	switch (ctrl->id) {
	case V4L2_CID_VFLIP:
		mt9m111->vflip = ctrl->value;
		ret = mt9m111_set_flip(icd, ctrl->value,
					MT9M111_RMB_MIRROR_ROWS);
		break;
	case V4L2_CID_HFLIP:
		mt9m111->hflip = ctrl->value;
		ret = mt9m111_set_flip(icd, ctrl->value,
					MT9M111_RMB_MIRROR_COLS);
		break;
	case V4L2_CID_GAIN:
		ret = mt9m111_set_global_gain(icd, ctrl->value);
		break;
	case V4L2_CID_EXPOSURE_AUTO:
		ret =  mt9m111_set_autoexposure(icd, ctrl->value);
		break;
	case V4L2_CID_AUTO_WHITE_BALANCE:
		ret =  mt9m111_set_autowhitebalance(icd, ctrl->value);
		break;
	default:
		ret = -EINVAL;
	}

	return ret;
}

static int mt9m111_restore_state(struct soc_camera_device *icd)
{
	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);

	mt9m111_set_context(icd, mt9m111->context);
	mt9m111_set_pixfmt(icd, mt9m111->pixfmt);
	mt9m111_setup_rect(icd, &mt9m111->rect);
	mt9m111_set_flip(icd, mt9m111->hflip, MT9M111_RMB_MIRROR_COLS);
	mt9m111_set_flip(icd, mt9m111->vflip, MT9M111_RMB_MIRROR_ROWS);
	mt9m111_set_global_gain(icd, icd->gain);
	mt9m111_set_autoexposure(icd, mt9m111->autoexposure);
	mt9m111_set_autowhitebalance(icd, mt9m111->autowhitebalance);
	return 0;
}

static int mt9m111_resume(struct soc_camera_device *icd)
{
	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
	int ret = 0;

	if (mt9m111->powered) {
		ret = mt9m111_enable(icd);
		if (!ret)
			ret = mt9m111_reset(icd);
		if (!ret)
			ret = mt9m111_restore_state(icd);
	}
	return ret;
}

static int mt9m111_init(struct soc_camera_device *icd)
{
	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
	int ret;

	mt9m111->context = HIGHPOWER;
	ret = mt9m111_enable(icd);
	if (!ret)
		ret = mt9m111_reset(icd);
	if (!ret)
		ret = mt9m111_set_context(icd, mt9m111->context);
	if (!ret)
		ret = mt9m111_set_autoexposure(icd, mt9m111->autoexposure);
	if (ret)
		dev_err(&icd->dev, "mt9m11x init failed: %d\n", ret);
	return ret;
}

static int mt9m111_release(struct soc_camera_device *icd)
{
	int ret;

	ret = mt9m111_disable(icd);
	if (ret < 0)
		dev_err(&icd->dev, "mt9m11x release failed: %d\n", ret);

	return ret;
}

/*
 * Interface active, can use i2c. If it fails, it can indeed mean, that
 * this wasn't our capture interface, so, we wait for the right one
 */
static int mt9m111_video_probe(struct soc_camera_device *icd)
{
	struct i2c_client *client = to_i2c_client(icd->control);
	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
	s32 data;
	int ret;

	/*
	 * We must have a parent by now. And it cannot be a wrong one.
	 * So this entire test is completely redundant.
	 */
	if (!icd->dev.parent ||
	    to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
		return -ENODEV;

	ret = mt9m111_enable(icd);
	if (ret)
		goto ei2c;
	ret = mt9m111_reset(icd);
	if (ret)
		goto ei2c;

	data = reg_read(CHIP_VERSION);

	switch (data) {
	case 0x143a: /* MT9M111 */
		mt9m111->model = V4L2_IDENT_MT9M111;
		break;
	case 0x148c: /* MT9M112 */
		mt9m111->model = V4L2_IDENT_MT9M112;
		break;
	default:
		ret = -ENODEV;
		dev_err(&icd->dev,
			"No MT9M11x chip detected, register read %x\n", data);
		goto ei2c;
	}

	icd->formats = mt9m111_colour_formats;
	icd->num_formats = ARRAY_SIZE(mt9m111_colour_formats);

	dev_info(&icd->dev, "Detected a MT9M11x chip ID %x\n", data);

	ret = soc_camera_video_start(icd);
	if (ret)
		goto eisis;

	mt9m111->autoexposure = 1;
	mt9m111->autowhitebalance = 1;

	mt9m111->swap_rgb_even_odd = 1;
	mt9m111->swap_rgb_red_blue = 1;

	return 0;
eisis:
ei2c:
	return ret;
}

static void mt9m111_video_remove(struct soc_camera_device *icd)
{
	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);

	dev_dbg(&icd->dev, "Video %x removed: %p, %p\n", mt9m111->client->addr,
		mt9m111->icd.dev.parent, mt9m111->icd.vdev);
	soc_camera_video_stop(&mt9m111->icd);
}

static int mt9m111_probe(struct i2c_client *client,
			 const struct i2c_device_id *did)
{
	struct mt9m111 *mt9m111;
	struct soc_camera_device *icd;
	struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
	struct soc_camera_link *icl = client->dev.platform_data;
	int ret;

	if (!icl) {
		dev_err(&client->dev, "MT9M11x driver needs platform data\n");
		return -EINVAL;
	}

	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
		dev_warn(&adapter->dev,
			 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
		return -EIO;
	}

	mt9m111 = kzalloc(sizeof(struct mt9m111), GFP_KERNEL);
	if (!mt9m111)
		return -ENOMEM;

	mt9m111->client = client;
	i2c_set_clientdata(client, mt9m111);

	/* Second stage probe - when a capture adapter is there */
	icd 		= &mt9m111->icd;
	icd->ops	= &mt9m111_ops;
	icd->control	= &client->dev;
	icd->x_min	= MT9M111_MIN_DARK_COLS;
	icd->y_min	= MT9M111_MIN_DARK_ROWS;
	icd->x_current	= icd->x_min;
	icd->y_current	= icd->y_min;
	icd->width_min	= MT9M111_MIN_DARK_ROWS;
	icd->width_max	= MT9M111_MAX_WIDTH;
	icd->height_min	= MT9M111_MIN_DARK_COLS;
	icd->height_max	= MT9M111_MAX_HEIGHT;
	icd->y_skip_top	= 0;
	icd->iface	= icl->bus_id;

	ret = soc_camera_device_register(icd);
	if (ret)
		goto eisdr;
	return 0;

eisdr:
	kfree(mt9m111);
	return ret;
}

static int mt9m111_remove(struct i2c_client *client)
{
	struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
	soc_camera_device_unregister(&mt9m111->icd);
	kfree(mt9m111);

	return 0;
}

static const struct i2c_device_id mt9m111_id[] = {
	{ "mt9m111", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, mt9m111_id);

static struct i2c_driver mt9m111_i2c_driver = {
	.driver = {
		.name = "mt9m111",
	},
	.probe		= mt9m111_probe,
	.remove		= mt9m111_remove,
	.id_table	= mt9m111_id,
};

static int __init mt9m111_mod_init(void)
{
	return i2c_add_driver(&mt9m111_i2c_driver);
}

static void __exit mt9m111_mod_exit(void)
{
	i2c_del_driver(&mt9m111_i2c_driver);
}

module_init(mt9m111_mod_init);
module_exit(mt9m111_mod_exit);

MODULE_DESCRIPTION("Micron MT9M111/MT9M112 Camera driver");
MODULE_AUTHOR("Robert Jarzmik");
MODULE_LICENSE("GPL");