3adb46a3bb80b1a7d282cb6d1c1dcce0a3391f20
[linux-2.6.git] / drivers / media / video / tegra / ov5650.c
1 /*
2  * ov5650.c - ov5650 sensor driver
3  *
4  * Copyright (C) 2011 Google Inc.
5  *
6  * Contributors:
7  *      Rebecca Schultz Zavin <rebecca@android.com>
8  *
9  * Leverage OV9640.c
10  *
11  * This file is licensed under the terms of the GNU General Public License
12  * version 2. This program is licensed "as is" without any warranty of any
13  * kind, whether express or implied.
14  */
15
16 #include <linux/delay.h>
17 #include <linux/fs.h>
18 #include <linux/i2c.h>
19 #include <linux/miscdevice.h>
20 #include <linux/slab.h>
21 #include <linux/uaccess.h>
22 #include <media/ov5650.h>
23 #include <media/tegra_camera.h>
24
25 #define SIZEOF_I2C_TRANSBUF 32
26
27 struct ov5650_reg {
28         u16 addr;
29         u16 val;
30 };
31
32 struct ov5650_sensor {
33         struct i2c_client *i2c_client;
34         struct ov5650_platform_data *pdata;
35 };
36
37 struct ov5650_info {
38         int mode;
39         enum StereoCameraMode camera_mode;
40         struct ov5650_sensor left;
41         struct ov5650_sensor right;
42         u8 i2c_trans_buf[SIZEOF_I2C_TRANSBUF];
43 };
44
45 static struct ov5650_info *stereo_ov5650_info;
46
47 #define OV5650_TABLE_WAIT_MS 0
48 #define OV5650_TABLE_END 1
49 #define OV5650_MAX_RETRIES 3
50
51 static struct ov5650_reg tp_none_seq[] = {
52         {0x5046, 0x00},
53         {OV5650_TABLE_END, 0x0000}
54 };
55
56 static struct ov5650_reg tp_cbars_seq[] = {
57         {0x503D, 0xC0},
58         {0x503E, 0x00},
59         {0x5046, 0x01},
60         {OV5650_TABLE_END, 0x0000}
61 };
62
63 static struct ov5650_reg tp_checker_seq[] = {
64         {0x503D, 0xC0},
65         {0x503E, 0x0A},
66         {0x5046, 0x01},
67         {OV5650_TABLE_END, 0x0000}
68 };
69
70 static struct ov5650_reg *test_pattern_modes[] = {
71         tp_none_seq,
72         tp_cbars_seq,
73         tp_checker_seq,
74 };
75
76 static struct ov5650_reg reset_seq[] = {
77         {0x3008, 0x82},
78         {OV5650_TABLE_WAIT_MS, 5},
79         {0x3008, 0x42},
80         {OV5650_TABLE_WAIT_MS, 5},
81         {OV5650_TABLE_END, 0x0000},
82 };
83
84 static struct ov5650_reg mode_start[] = {
85         {0x3103, 0x93},
86         {0x3017, 0xff},
87         {0x3018, 0xfc},
88
89         {0x3600, 0x50},
90         {0x3601, 0x0d},
91         {0x3604, 0x50},
92         {0x3605, 0x04},
93         {0x3606, 0x3f},
94         {0x3612, 0x1a},
95         {0x3630, 0x22},
96         {0x3631, 0x22},
97         {0x3702, 0x3a},
98         {0x3704, 0x18},
99         {0x3705, 0xda},
100         {0x3706, 0x41},
101         {0x370a, 0x80},
102         {0x370b, 0x40},
103         {0x370e, 0x00},
104         {0x3710, 0x28},
105         {0x3712, 0x13},
106         {0x3830, 0x50},
107         {0x3a18, 0x00},
108         {0x3a19, 0xf8},
109         {0x3a00, 0x38},
110
111
112         {0x3603, 0xa7},
113         {0x3615, 0x50},
114         {0x3620, 0x56},
115         {0x3810, 0x00},
116         {0x3836, 0x00},
117         {0x3a1a, 0x06},
118         {0x4000, 0x01},
119         {0x401c, 0x48},
120         {0x401d, 0x08},
121         {0x5000, 0x00},
122         {0x5001, 0x00},
123         {0x5002, 0x00},
124         {0x503d, 0x00},
125         {0x5046, 0x00},
126
127         {0x300f, 0x8f},
128
129         {0x3010, 0x10},
130         {0x3011, 0x14},
131         {0x3012, 0x02},
132         {0x3815, 0x82},
133         {0x3503, 0x33},
134         {0x3613, 0x44},
135         {OV5650_TABLE_END, 0x0},
136 };
137
138 static struct ov5650_reg mode_2592x1944[] = {
139         {0x3621, 0x2f},
140
141         {0x3632, 0x55},
142         {0x3703, 0xe6},
143         {0x370c, 0xa0},
144         {0x370d, 0x04},
145         {0x3713, 0x2f},
146         {0x3800, 0x02},
147         {0x3801, 0x58},
148         {0x3802, 0x00},
149         {0x3803, 0x0c},
150         {0x3804, 0x0a},
151         {0x3805, 0x20},
152         {0x3806, 0x07},
153         {0x3807, 0xa0},
154         {0x3808, 0x0a},
155
156         {0x3809, 0x20},
157
158         {0x380a, 0x07},
159
160         {0x380b, 0xa0},
161
162         {0x380c, 0x0c},
163
164         {0x380d, 0xb4},
165
166         {0x380e, 0x07},
167
168         {0x380f, 0xb0},
169
170         {0x3818, 0xc0},
171         {0x381a, 0x3c},
172         {0x3a0d, 0x06},
173         {0x3c01, 0x00},
174         {0x3007, 0x3f},
175         {0x5059, 0x80},
176         {0x3003, 0x03},
177         {0x3500, 0x00},
178         {0x3501, 0x7a},
179
180         {0x3502, 0xd0},
181
182         {0x350a, 0x00},
183         {0x350b, 0x00},
184         {0x401d, 0x08},
185         {0x4801, 0x0f},
186         {0x300e, 0x0c},
187         {0x4803, 0x50},
188         {0x4800, 0x34},
189         {OV5650_TABLE_END, 0x0000}
190 };
191
192 static struct ov5650_reg mode_1296x972[] = {
193         {0x3621, 0xaf},
194
195         {0x3632, 0x5a},
196         {0x3703, 0xb0},
197         {0x370c, 0xc5},
198         {0x370d, 0x42},
199         {0x3713, 0x2f},
200         {0x3800, 0x03},
201         {0x3801, 0x3c},
202         {0x3802, 0x00},
203         {0x3803, 0x06},
204         {0x3804, 0x05},
205         {0x3805, 0x10},
206         {0x3806, 0x03},
207         {0x3807, 0xd0},
208         {0x3808, 0x05},
209
210         {0x3809, 0x10},
211
212         {0x380a, 0x03},
213
214         {0x380b, 0xd0},
215
216         {0x380c, 0x08},
217
218         {0x380d, 0xa8},
219
220         {0x380e, 0x05},
221
222         {0x380f, 0xa4},
223
224         {0x3818, 0xc1},
225         {0x381a, 0x00},
226         {0x3a0d, 0x08},
227         {0x3c01, 0x00},
228         {0x3007, 0x3b},
229         {0x5059, 0x80},
230         {0x3003, 0x03},
231         {0x3500, 0x00},
232
233         {0x3501, 0x5a},
234         {0x3502, 0x10},
235         {0x350a, 0x00},
236         {0x350b, 0x10},
237         {0x401d, 0x08},
238         {0x4801, 0x0f},
239         {0x300e, 0x0c},
240         {0x4803, 0x50},
241         {0x4800, 0x34},
242         {OV5650_TABLE_END, 0x0000}
243 };
244
245 static struct ov5650_reg mode_2080x1164[] = {
246         {0x3103, 0x93},
247         {0x3007, 0x3b},
248         {0x3017, 0xff},
249         {0x3018, 0xfc},
250
251         {0x3600, 0x54},
252         {0x3601, 0x05},
253         {0x3603, 0xa7},
254         {0x3604, 0x40},
255         {0x3605, 0x04},
256         {0x3606, 0x3f},
257         {0x3612, 0x1a},
258         {0x3613, 0x44},
259         {0x3615, 0x52},
260         {0x3620, 0x56},
261         {0x3623, 0x01},
262         {0x3630, 0x22},
263         {0x3631, 0x36},
264         {0x3632, 0x5f},
265         {0x3633, 0x24},
266
267         {0x3702, 0x3a},
268         {0x3704, 0x18},
269         {0x3706, 0x41},
270         {0x370b, 0x40},
271         {0x370e, 0x00},
272         {0x3710, 0x28},
273         {0x3711, 0x24},
274         {0x3712, 0x13},
275
276         {0x3810, 0x00},
277         {0x3815, 0x82},
278         {0x3830, 0x50},
279         {0x3836, 0x00},
280
281         {0x3a1a, 0x06},
282         {0x3a18, 0x00},
283         {0x3a19, 0xf8},
284         {0x3a00, 0x38},
285
286         {0x3a0d, 0x06},
287         {0x3c01, 0x34},
288
289         {0x401f, 0x03},
290         {0x4000, 0x05},
291         {0x401d, 0x08},
292         {0x4001, 0x02},
293
294         {0x5000, 0x00},
295         {0x5001, 0x00},
296         {0x5002, 0x00},
297         {0x503d, 0x00},
298         {0x5046, 0x00},
299
300         {0x300f, 0x8f},
301
302         {0x3010, 0x10},
303         {0x3011, 0x14},
304         {0x3012, 0x02},
305         {0x3503, 0x33},
306
307
308         {0x3621, 0x2f},
309
310         {0x3703, 0xe6},
311         {0x370c, 0x00},
312         {0x370d, 0x04},
313         {0x3713, 0x22},
314         {0x3714, 0x27},
315         {0x3705, 0xda},
316         {0x370a, 0x80},
317
318         {0x3800, 0x02},
319         {0x3801, 0x12},
320         {0x3802, 0x00},
321         {0x3803, 0x0a},
322         {0x3804, 0x08},
323         {0x3805, 0x20},
324         {0x3806, 0x04},
325         {0x3807, 0x92},
326         {0x3808, 0x08},
327
328         {0x3809, 0x20},
329
330         {0x380a, 0x04},
331
332         {0x380b, 0x92},
333
334         {0x380c, 0x0a},
335
336         {0x380d, 0x96},
337
338         {0x380e, 0x04},
339
340         {0x380f, 0x9e},
341
342         {0x3818, 0xc0},
343         {0x381a, 0x3c},
344         {0x381c, 0x31},
345         {0x381d, 0x8e},
346         {0x381e, 0x04},
347         {0x381f, 0x92},
348         {0x3820, 0x04},
349         {0x3821, 0x19},
350         {0x3824, 0x01},
351         {0x3827, 0x0a},
352         {0x401c, 0x46},
353
354         {0x3003, 0x03},
355         {0x3500, 0x00},
356         {0x3501, 0x49},
357         {0x3502, 0xa0},
358         {0x350a, 0x00},
359         {0x350b, 0x00},
360         {0x4801, 0x0f},
361         {0x300e, 0x0c},
362         {0x4803, 0x50},
363         {0x4800, 0x34},
364
365         {OV5650_TABLE_END, 0x0000}
366 };
367
368 static struct ov5650_reg mode_1920x1080[] = {
369         {0x3103, 0x93},
370         {0x3007, 0x3b},
371         {0x3017, 0xff},
372         {0x3018, 0xfc},
373
374         {0x3600, 0x54},
375         {0x3601, 0x05},
376         {0x3603, 0xa7},
377         {0x3604, 0x40},
378         {0x3605, 0x04},
379         {0x3606, 0x3f},
380         {0x3612, 0x1a},
381         {0x3613, 0x44},
382         {0x3615, 0x52},
383         {0x3620, 0x56},
384         {0x3623, 0x01},
385         {0x3630, 0x22},
386         {0x3631, 0x36},
387         {0x3632, 0x5f},
388         {0x3633, 0x24},
389
390         {0x3702, 0x3a},
391         {0x3704, 0x18},
392         {0x3706, 0x41},
393         {0x370b, 0x40},
394         {0x370e, 0x00},
395         {0x3710, 0x28},
396         {0x3711, 0x24},
397         {0x3712, 0x13},
398
399         {0x3810, 0x00},
400         {0x3815, 0x82},
401
402         {0x3830, 0x50},
403         {0x3836, 0x00},
404
405         {0x3a1a, 0x06},
406         {0x3a18, 0x00},
407         {0x3a19, 0xf8},
408         {0x3a00, 0x38},
409         {0x3a0d, 0x06},
410         {0x3c01, 0x34},
411
412         {0x401f, 0x03},
413         {0x4000, 0x05},
414         {0x401d, 0x08},
415         {0x4001, 0x02},
416
417         {0x5000, 0x00},
418         {0x5001, 0x00},
419         {0x5002, 0x00},
420         {0x503d, 0x00},
421         {0x5046, 0x00},
422
423         {0x300f, 0x8f},
424         {0x3010, 0x10},
425         {0x3011, 0x14},
426         {0x3012, 0x02},
427         {0x3503, 0x33},
428
429         {0x3621, 0x2f},
430         {0x3703, 0xe6},
431         {0x370c, 0x00},
432         {0x370d, 0x04},
433         {0x3713, 0x22},
434         {0x3714, 0x27},
435         {0x3705, 0xda},
436         {0x370a, 0x80},
437
438         {0x3800, 0x02},
439         {0x3801, 0x94},
440         {0x3802, 0x00},
441         {0x3803, 0x0c},
442         {0x3804, 0x07},
443         {0x3805, 0x80},
444         {0x3806, 0x04},
445         {0x3807, 0x40},
446         {0x3808, 0x07},
447         {0x3809, 0x80},
448         {0x380a, 0x04},
449         {0x380b, 0x40},
450         {0x380c, 0x0a},
451         {0x380d, 0x84},
452         {0x380e, 0x04},
453         {0x380f, 0xa4},
454         {0x3818, 0xc0},
455         {0x381a, 0x3c},
456         {0x381c, 0x31},
457         {0x381d, 0xa4},
458         {0x381e, 0x04},
459         {0x381f, 0x60},
460         {0x3820, 0x03},
461         {0x3821, 0x1a},
462         {0x3824, 0x01},
463         {0x3827, 0x0a},
464         {0x401c, 0x46},
465
466         {0x3003, 0x03},
467         {0x3500, 0x00},
468         {0x3501, 0x49},
469         {0x3502, 0xa0},
470         {0x350a, 0x00},
471         {0x350b, 0x00},
472         {0x4801, 0x0f},
473         {0x300e, 0x0c},
474         {0x4803, 0x50},
475         {0x4800, 0x34},
476
477         {OV5650_TABLE_END, 0x0000}
478 };
479
480
481 static struct ov5650_reg mode_1264x704[] = {
482         {0x3600, 0x54},
483         {0x3601, 0x05},
484         {0x3604, 0x40},
485         {0x3705, 0xdb},
486         {0x370a, 0x81},
487         {0x3615, 0x52},
488         {0x3810, 0x40},
489         {0x3836, 0x41},
490         {0x4000, 0x05},
491         {0x401c, 0x42},
492         {0x401d, 0x08},
493         {0x5046, 0x09},
494         {0x3010, 0x00},
495         {0x3503, 0x00},
496         {0x3613, 0xc4},
497
498         {0x3621, 0xaf},
499
500         {0x3632, 0x55},
501         {0x3703, 0x9a},
502         {0x370c, 0x00},
503         {0x370d, 0x42},
504         {0x3713, 0x22},
505         {0x3800, 0x02},
506         {0x3801, 0x54},
507         {0x3802, 0x00},
508         {0x3803, 0x0c},
509         {0x3804, 0x05},
510         {0x3805, 0x00},
511         {0x3806, 0x02},
512         {0x3807, 0xd0},
513         {0x3808, 0x05},
514
515         {0x3809, 0x00},
516
517         {0x380a, 0x02},
518
519         {0x380b, 0xd0},
520
521         {0x380c, 0x08},
522
523         {0x380d, 0x72},
524
525         {0x380e, 0x02},
526
527         {0x380f, 0xe4},
528
529         {0x3818, 0xc1},
530         {0x381a, 0x3c},
531         {0x3a0d, 0x06},
532         {0x3c01, 0x34},
533         {0x3007, 0x3b},
534         {0x5059, 0x80},
535         {0x3003, 0x03},
536         {0x3500, 0x04},
537         {0x3501, 0xa5},
538
539         {0x3502, 0x10},
540
541         {0x350a, 0x00},
542         {0x350b, 0x00},
543         {0x4801, 0x0f},
544         {0x300e, 0x0c},
545         {0x4803, 0x50},
546         {0x4800, 0x24},
547         {0x300f, 0x8b},
548
549         {0x3711, 0x24},
550         {0x3713, 0x92},
551         {0x3714, 0x17},
552         {0x381c, 0x10},
553         {0x381d, 0x82},
554         {0x381e, 0x05},
555         {0x381f, 0xc0},
556         {0x3821, 0x20},
557         {0x3824, 0x23},
558         {0x3825, 0x2c},
559         {0x3826, 0x00},
560         {0x3827, 0x0c},
561         {0x3623, 0x01},
562         {0x3633, 0x24},
563         {0x3632, 0x5f},
564         {0x401f, 0x03},
565
566         {OV5650_TABLE_END, 0x0000}
567 };
568
569 static struct ov5650_reg mode_320x240[] = {
570         {0x3103, 0x93},
571         {0x3b07, 0x0c},
572         {0x3017, 0xff},
573         {0x3018, 0xfc},
574         {0x3706, 0x41},
575         {0x3613, 0xc4},
576         {0x370d, 0x42},
577         {0x3703, 0x9a},
578         {0x3630, 0x22},
579         {0x3605, 0x04},
580         {0x3606, 0x3f},
581         {0x3712, 0x13},
582         {0x370e, 0x00},
583         {0x370b, 0x40},
584         {0x3600, 0x54},
585         {0x3601, 0x05},
586         {0x3713, 0x22},
587         {0x3714, 0x27},
588         {0x3631, 0x22},
589         {0x3612, 0x1a},
590         {0x3604, 0x40},
591         {0x3705, 0xdc},
592         {0x370a, 0x83},
593         {0x370c, 0xc8},
594         {0x3710, 0x28},
595         {0x3702, 0x3a},
596         {0x3704, 0x18},
597         {0x3a18, 0x00},
598         {0x3a19, 0xf8},
599         {0x3a00, 0x38},
600         {0x3800, 0x02},
601         {0x3801, 0x54},
602         {0x3803, 0x0c},
603         {0x380c, 0x0c},
604         {0x380d, 0xb4},
605         {0x380e, 0x07},
606         {0x380f, 0xb0},
607         {0x3830, 0x50},
608         {0x3a08, 0x12},
609         {0x3a09, 0x70},
610         {0x3a0a, 0x0f},
611         {0x3a0b, 0x60},
612         {0x3a0d, 0x06},
613         {0x3a0e, 0x06},
614         {0x3a13, 0x54},
615         {0x3815, 0x82},
616         {0x5059, 0x80},
617         {0x3615, 0x52},
618         {0x505a, 0x0a},
619         {0x505b, 0x2e},
620         {0x3713, 0x92},
621         {0x3714, 0x17},
622         {0x3803, 0x0a},
623         {0x3804, 0x05},
624         {0x3805, 0x00},
625         {0x3806, 0x01},
626         {0x3807, 0x00},
627         {0x3808, 0x01},
628         {0x3809, 0x40},
629         {0x380a, 0x01},
630         {0x380b, 0x00},
631         {0x380c, 0x0a},
632
633         {0x380d, 0x04},
634
635         {0x380e, 0x01},
636
637         {0x380f, 0x38},
638
639         {0x3815, 0x81},
640         {0x3824, 0x23},
641         {0x3825, 0x20},
642         {0x3826, 0x00},
643         {0x3827, 0x08},
644         {0x370d, 0xc2},
645         {0x3a08, 0x17},
646         {0x3a09, 0x64},
647         {0x3a0a, 0x13},
648         {0x3a0b, 0x80},
649         {0x3a00, 0x58},
650         {0x3a1a, 0x06},
651         {0x3503, 0x33},
652         {0x3623, 0x01},
653         {0x3633, 0x24},
654         {0x3c01, 0x34},
655         {0x3c04, 0x28},
656         {0x3c05, 0x98},
657         {0x3c07, 0x07},
658         {0x3c09, 0xc2},
659         {0x4000, 0x05},
660         {0x401d, 0x08},
661         {0x4001, 0x02},
662         {0x401c, 0x42},
663         {0x5046, 0x09},
664         {0x3810, 0x40},
665         {0x3836, 0x41},
666         {0x505f, 0x04},
667         {0x5000, 0x06},
668         {0x5001, 0x00},
669         {0x5002, 0x02},
670         {0x503d, 0x00},
671         {0x5901, 0x08},
672         {0x585a, 0x01},
673         {0x585b, 0x2c},
674         {0x585c, 0x01},
675         {0x585d, 0x93},
676         {0x585e, 0x01},
677         {0x585f, 0x90},
678         {0x5860, 0x01},
679         {0x5861, 0x0d},
680         {0x5180, 0xc0},
681         {0x5184, 0x00},
682         {0x470a, 0x00},
683         {0x470b, 0x00},
684         {0x470c, 0x00},
685         {0x300f, 0x8e},
686         {0x3603, 0xa7},
687         {0x3632, 0x55},
688         {0x3620, 0x56},
689         {0x3621, 0xaf},
690         {0x3818, 0xc3},
691         {0x3631, 0x36},
692         {0x3632, 0x5f},
693         {0x3711, 0x24},
694         {0x401f, 0x03},
695
696         {0x3011, 0x14},
697         {0x3007, 0x3B},
698         {0x300f, 0x8f},
699         {0x4801, 0x0f},
700         {0x3003, 0x03},
701         {0x300e, 0x0c},
702         {0x3010, 0x15},
703         {0x4803, 0x50},
704         {0x4800, 0x24},
705         {0x4837, 0x40},
706         {0x3815, 0x82},
707
708         {OV5650_TABLE_END, 0x0000}
709 };
710
711 static struct ov5650_reg mode_end[] = {
712         {0x3212, 0x00},
713         {0x3003, 0x01},
714         {0x3212, 0x10},
715         {0x3212, 0xa0},
716         {0x3008, 0x02},
717
718         {OV5650_TABLE_END, 0x0000}
719 };
720
721 enum {
722         OV5650_MODE_2592x1944,
723         OV5650_MODE_1296x972,
724         OV5650_MODE_2080x1164,
725         OV5650_MODE_1920x1080,
726         OV5650_MODE_1264x704,
727         OV5650_MODE_320x240,
728         OV5650_MODE_INVALID
729 };
730
731 static struct ov5650_reg *mode_table[] = {
732         [OV5650_MODE_2592x1944] = mode_2592x1944,
733         [OV5650_MODE_1296x972]  = mode_1296x972,
734         [OV5650_MODE_2080x1164] = mode_2080x1164,
735         [OV5650_MODE_1920x1080] = mode_1920x1080,
736         [OV5650_MODE_1264x704]  = mode_1264x704,
737         [OV5650_MODE_320x240]   = mode_320x240
738 };
739
740 static inline void ov5650_get_frame_length_regs(struct ov5650_reg *regs,
741                                                 u32 frame_length)
742 {
743         regs->addr = 0x380e;
744         regs->val = (frame_length >> 8) & 0xff;
745         (regs + 1)->addr = 0x380f;
746         (regs + 1)->val = (frame_length) & 0xff;
747 }
748
749 static inline void ov5650_get_coarse_time_regs(struct ov5650_reg *regs,
750                                                 u32 coarse_time)
751 {
752         regs->addr = 0x3500;
753         regs->val = (coarse_time >> 12) & 0xff;
754         (regs + 1)->addr = 0x3501;
755         (regs + 1)->val = (coarse_time >> 4) & 0xff;
756         (regs + 2)->addr = 0x3502;
757         (regs + 2)->val = (coarse_time & 0xf) << 4;
758 }
759
760 static inline void ov5650_get_gain_reg(struct ov5650_reg *regs, u16 gain)
761 {
762         regs->addr = 0x350b;
763         regs->val = gain;
764 }
765
766 static int ov5650_read_reg(struct i2c_client *client, u16 addr, u8 *val)
767 {
768         int err;
769         struct i2c_msg msg[2];
770         unsigned char data[3];
771
772         if (!client->adapter)
773                 return -ENODEV;
774
775         msg[0].addr = client->addr;
776         msg[0].flags = 0;
777         msg[0].len = 2;
778         msg[0].buf = data;
779
780         /* high byte goes out first */
781         data[0] = (u8) (addr >> 8);
782         data[1] = (u8) (addr & 0xff);
783
784         msg[1].addr = client->addr;
785         msg[1].flags = I2C_M_RD;
786         msg[1].len = 1;
787         msg[1].buf = data + 2;
788
789         err = i2c_transfer(client->adapter, msg, 2);
790
791         if (err != 1)
792                 return -EINVAL;
793
794         *val = data[2];
795
796         return 0;
797 }
798
799 static int ov5650_read_reg_helper(struct ov5650_info *info,
800                                         u16 addr, u8 *val)
801 {
802         int ret;
803         switch (info->camera_mode) {
804         case Main:
805         case StereoCameraMode_Left:
806                 ret = ov5650_read_reg(info->left.i2c_client, addr, val);
807                 break;
808         case StereoCameraMode_Stereo:
809                 ret = ov5650_read_reg(info->left.i2c_client, addr, val);
810                 if (ret)
811                         break;
812                 ret = ov5650_read_reg(info->right.i2c_client, addr, val);
813                 break;
814         case StereoCameraMode_Right:
815                 ret = ov5650_read_reg(info->right.i2c_client, addr, val);
816                 break;
817         default:
818                 return -1;
819         }
820         return ret;
821 }
822
823 static int ov5650_write_reg(struct i2c_client *client, u16 addr, u8 val)
824 {
825         int err;
826         struct i2c_msg msg;
827         unsigned char data[3];
828
829         if (!client->adapter)
830                 return -ENODEV;
831
832         data[0] = (u8) (addr >> 8);
833         data[1] = (u8) (addr & 0xff);
834         data[2] = (u8) (val & 0xff);
835
836         msg.addr = client->addr;
837         msg.flags = 0;
838         msg.len = 3;
839         msg.buf = data;
840
841         err = i2c_transfer(client->adapter, &msg, 1);
842         if (err == 1)
843                 return 0;
844
845         pr_err("ov5650: i2c transfer failed, retrying %x %x\n", addr, val);
846
847         return err;
848 }
849
850 static int ov5650_write_reg_helper(struct ov5650_info *info,
851                                         u16 addr, u8 val)
852 {
853         int ret;
854         switch (info->camera_mode) {
855         case Main:
856         case StereoCameraMode_Left:
857                 ret = ov5650_write_reg(info->left.i2c_client, addr, val);
858                 break;
859         case StereoCameraMode_Stereo:
860                 ret = ov5650_write_reg(info->left.i2c_client, addr, val);
861                 if (ret)
862                         break;
863                 ret = ov5650_write_reg(info->right.i2c_client, addr, val);
864                 break;
865         case StereoCameraMode_Right:
866                 ret = ov5650_write_reg(info->right.i2c_client, addr, val);
867                 break;
868         default:
869                 return -1;
870         }
871         return ret;
872 }
873
874 static int ov5650_write_bulk_reg(struct i2c_client *client, u8 *data, int len)
875 {
876         int err;
877         struct i2c_msg msg;
878
879         if (!client->adapter)
880                 return -ENODEV;
881
882         msg.addr = client->addr;
883         msg.flags = 0;
884         msg.len = len;
885         msg.buf = data;
886
887         err = i2c_transfer(client->adapter, &msg, 1);
888         if (err == 1)
889                 return 0;
890
891         pr_err("ov5650: i2c bulk transfer failed at %x\n",
892                 (int)data[0] << 8 | data[1]);
893
894         return err;
895 }
896
897 static int ov5650_write_bulk_reg_helper(struct ov5650_info *info, int len)
898 {
899         int ret;
900         switch (info->camera_mode) {
901         case Main:
902         case StereoCameraMode_Left:
903                 ret = ov5650_write_bulk_reg(info->left.i2c_client,
904                                         info->i2c_trans_buf, len);
905                 break;
906         case StereoCameraMode_Stereo:
907                 ret = ov5650_write_bulk_reg(info->left.i2c_client,
908                                         info->i2c_trans_buf, len);
909                 if (ret)
910                         break;
911                 ret = ov5650_write_bulk_reg(info->right.i2c_client,
912                                         info->i2c_trans_buf, len);
913                 break;
914         case StereoCameraMode_Right:
915                 ret = ov5650_write_bulk_reg(info->right.i2c_client,
916                                         info->i2c_trans_buf, len);
917                 break;
918         default:
919                 return -1;
920         }
921         return ret;
922 }
923
924 static int ov5650_write_table(struct ov5650_info *info,
925                                 const struct ov5650_reg table[],
926                                 const struct ov5650_reg override_list[],
927                                 int num_override_regs)
928 {
929         int err;
930         const struct ov5650_reg *next, *n_next;
931         u8 *b_ptr = info->i2c_trans_buf;
932         unsigned int buf_filled = 0;
933         unsigned int i;
934         u16 val;
935
936         for (next = table; next->addr != OV5650_TABLE_END; next++) {
937                 if (next->addr == OV5650_TABLE_WAIT_MS) {
938                         msleep(next->val);
939                         continue;
940                 }
941
942                 val = next->val;
943                 /* When an override list is passed in, replace the reg */
944                 /* value to write if the reg is in the list            */
945                 if (override_list) {
946                         for (i = 0; i < num_override_regs; i++) {
947                                 if (next->addr == override_list[i].addr) {
948                                         val = override_list[i].val;
949                                         break;
950                                 }
951                         }
952                 }
953
954                 if (!buf_filled) {
955                         b_ptr = info->i2c_trans_buf;
956                         *b_ptr++ = next->addr >> 8;
957                         *b_ptr++ = next->addr & 0xff;
958                         buf_filled = 2;
959                 }
960                 *b_ptr++ = val;
961                 buf_filled++;
962
963                 n_next = next + 1;
964                 if (n_next->addr != OV5650_TABLE_END &&
965                         n_next->addr != OV5650_TABLE_WAIT_MS &&
966                         buf_filled < SIZEOF_I2C_TRANSBUF &&
967                         n_next->addr == next->addr + 1) {
968                         continue;
969                 }
970
971                 err = ov5650_write_bulk_reg_helper(info, buf_filled);
972                 if (err)
973                         return err;
974
975                 buf_filled = 0;
976         }
977         return 0;
978 }
979
980 static int ov5650_set_mode(struct ov5650_info *info, struct ov5650_mode *mode)
981 {
982         int sensor_mode;
983         int err;
984         struct ov5650_reg reg_list[6];
985
986         pr_info("%s: xres %u yres %u framelength %u coarsetime %u gain %u\n",
987                 __func__, mode->xres, mode->yres, mode->frame_length,
988                 mode->coarse_time, mode->gain);
989         if (mode->xres == 2592 && mode->yres == 1944)
990                 sensor_mode = OV5650_MODE_2592x1944;
991         else if (mode->xres == 1296 && mode->yres == 972)
992                 sensor_mode = OV5650_MODE_1296x972;
993         else if (mode->xres == 2080 && mode->yres == 1164)
994                 sensor_mode = OV5650_MODE_2080x1164;
995         else if (mode->xres == 1920 && mode->yres == 1080)
996                 sensor_mode = OV5650_MODE_1920x1080;
997         else if (mode->xres == 1264 && mode->yres == 704)
998                 sensor_mode = OV5650_MODE_1264x704;
999         else if (mode->xres == 320 && mode->yres == 240)
1000                 sensor_mode = OV5650_MODE_320x240;
1001         else {
1002                 pr_err("%s: invalid resolution supplied to set mode %d %d\n",
1003                        __func__, mode->xres, mode->yres);
1004                 return -EINVAL;
1005         }
1006
1007         /* get a list of override regs for the asking frame length, */
1008         /* coarse integration time, and gain.                       */
1009         ov5650_get_frame_length_regs(reg_list, mode->frame_length);
1010         ov5650_get_coarse_time_regs(reg_list + 2, mode->coarse_time);
1011         ov5650_get_gain_reg(reg_list + 5, mode->gain);
1012
1013         err = ov5650_write_table(info, reset_seq, NULL, 0);
1014         if (err)
1015                 return err;
1016
1017         err = ov5650_write_table(info, mode_start, NULL, 0);
1018         if (err)
1019                 return err;
1020
1021         err = ov5650_write_table(info, mode_table[sensor_mode],
1022                 reg_list, 6);
1023         if (err)
1024                 return err;
1025
1026         err = ov5650_write_table(info, mode_end, NULL, 0);
1027         if (err)
1028                 return err;
1029
1030         info->mode = sensor_mode;
1031         return 0;
1032 }
1033
1034 static int ov5650_set_frame_length(struct ov5650_info *info, u32 frame_length)
1035 {
1036         int ret;
1037         struct ov5650_reg reg_list[2];
1038         u8 *b_ptr = info->i2c_trans_buf;
1039
1040         ov5650_get_frame_length_regs(reg_list, frame_length);
1041
1042         *b_ptr++ = reg_list[0].addr >> 8;
1043         *b_ptr++ = reg_list[0].addr & 0xff;
1044         *b_ptr++ = reg_list[0].val & 0xff;
1045         *b_ptr++ = reg_list[1].val & 0xff;
1046         ret = ov5650_write_bulk_reg_helper(info, 4);
1047
1048         return ret;
1049 }
1050
1051 static int ov5650_set_coarse_time(struct ov5650_info *info, u32 coarse_time)
1052 {
1053         int ret;
1054         struct ov5650_reg reg_list[3];
1055         u8 *b_ptr = info->i2c_trans_buf;
1056
1057         ov5650_get_coarse_time_regs(reg_list, coarse_time);
1058
1059         *b_ptr++ = reg_list[0].addr >> 8;
1060         *b_ptr++ = reg_list[0].addr & 0xff;
1061         *b_ptr++ = reg_list[0].val & 0xff;
1062         *b_ptr++ = reg_list[1].val & 0xff;
1063         *b_ptr++ = reg_list[2].val & 0xff;
1064         ret = ov5650_write_bulk_reg_helper(info, 5);
1065
1066         return ret;
1067 }
1068
1069 static int ov5650_set_gain(struct ov5650_info *info, u16 gain)
1070 {
1071         int ret;
1072         struct ov5650_reg reg_list;
1073
1074         ov5650_get_gain_reg(&reg_list, gain);
1075         ret = ov5650_write_reg_helper(info, reg_list.addr, reg_list.val);
1076
1077         return ret;
1078 }
1079
1080 static int ov5650_set_group_hold(struct ov5650_info *info, struct ov5650_ae *ae)
1081 {
1082         int ret;
1083         int count = 0;
1084         bool groupHoldEnabled = false;
1085
1086         if (ae->gain_enable)
1087                 count++;
1088         if (ae->coarse_time_enable)
1089                 count++;
1090         if (ae->frame_length_enable)
1091                 count++;
1092         if (count >= 2)
1093                 groupHoldEnabled = true;
1094
1095         if (groupHoldEnabled) {
1096                 ret = ov5650_write_reg_helper(info, 0x3212, 0x01);
1097                 if (ret)
1098                         return ret;
1099         }
1100
1101         if (ae->gain_enable)
1102                 ov5650_set_gain(info, ae->gain);
1103         if (ae->coarse_time_enable)
1104                 ov5650_set_coarse_time(info, ae->coarse_time);
1105         if (ae->frame_length_enable)
1106                 ov5650_set_frame_length(info, ae->frame_length);
1107
1108         if (groupHoldEnabled) {
1109                 ret = ov5650_write_reg_helper(info, 0x3212, 0x11);
1110                 if (ret)
1111                         return ret;
1112
1113                 ret = ov5650_write_reg_helper(info, 0x3212, 0xa1);
1114                 if (ret)
1115                         return ret;
1116         }
1117
1118         return 0;
1119 }
1120
1121
1122 static int ov5650_set_binning(struct ov5650_info *info, u8 enable)
1123 {
1124         s32 ret;
1125         u8  array_ctrl_reg, analog_ctrl_reg, timing_reg;
1126         u32 val;
1127
1128         if (info->mode == OV5650_MODE_2592x1944
1129          || info->mode == OV5650_MODE_2080x1164
1130          || info->mode >= OV5650_MODE_INVALID) {
1131                 return -EINVAL;
1132         }
1133
1134         ov5650_read_reg_helper(info, OV5650_ARRAY_CONTROL_01, &array_ctrl_reg);
1135         ov5650_read_reg_helper(info, OV5650_ANALOG_CONTROL_D, &analog_ctrl_reg);
1136         ov5650_read_reg_helper(info, OV5650_TIMING_TC_REG_18, &timing_reg);
1137
1138         ret = ov5650_write_reg_helper(info,
1139                         OV5650_SRM_GRUP_ACCESS,
1140                         OV5650_GROUP_ID(3));
1141         if (ret < 0)
1142                 return -EIO;
1143
1144         if (!enable) {
1145                 ret = ov5650_write_reg_helper(info,
1146                         OV5650_ARRAY_CONTROL_01,
1147                         array_ctrl_reg |
1148                         (OV5650_H_BINNING_BIT | OV5650_H_SUBSAMPLING_BIT));
1149
1150                 if (ret < 0)
1151                         goto exit;
1152
1153                 ret = ov5650_write_reg_helper(info,
1154                         OV5650_ANALOG_CONTROL_D,
1155                         analog_ctrl_reg & ~OV5650_V_BINNING_BIT);
1156
1157                 if (ret < 0)
1158                         goto exit;
1159
1160                 ret = ov5650_write_reg_helper(info,
1161                         OV5650_TIMING_TC_REG_18,
1162                         timing_reg | OV5650_V_SUBSAMPLING_BIT);
1163
1164                 if (ret < 0)
1165                         goto exit;
1166
1167                 if (info->mode == OV5650_MODE_1296x972)
1168                         val = 0x1A2;
1169                 else
1170                         /* FIXME: this value is not verified yet. */
1171                         val = 0x1A8;
1172
1173                 ret = ov5650_write_reg_helper(info,
1174                         OV5650_TIMING_CONTROL_HS_HIGH,
1175                         (val >> 8));
1176
1177                 if (ret < 0)
1178                         goto exit;
1179
1180                 ret = ov5650_write_reg_helper(info,
1181                         OV5650_TIMING_CONTROL_HS_LOW,
1182                         (val & 0xFF));
1183         } else {
1184                 ret = ov5650_write_reg_helper(info,
1185                         OV5650_ARRAY_CONTROL_01,
1186                         (array_ctrl_reg | OV5650_H_BINNING_BIT)
1187                         & ~OV5650_H_SUBSAMPLING_BIT);
1188
1189                 if (ret < 0)
1190                         goto exit;
1191
1192                 ret = ov5650_write_reg_helper(info,
1193                         OV5650_ANALOG_CONTROL_D,
1194                         analog_ctrl_reg | OV5650_V_BINNING_BIT);
1195
1196                 if (ret < 0)
1197                         goto exit;
1198
1199                 ret = ov5650_write_reg_helper(info,
1200                         OV5650_TIMING_TC_REG_18,
1201                         timing_reg | OV5650_V_SUBSAMPLING_BIT);
1202
1203                 if (ret < 0)
1204                         goto exit;
1205
1206                 if (info->mode == OV5650_MODE_1296x972)
1207                         val = 0x33C;
1208                 else
1209                         val = 0x254;
1210
1211                 ret = ov5650_write_reg_helper(info,
1212                         OV5650_TIMING_CONTROL_HS_HIGH,
1213                         (val >> 8));
1214
1215                 if (ret < 0)
1216                         goto exit;
1217
1218                 ret = ov5650_write_reg_helper(info,
1219                         OV5650_TIMING_CONTROL_HS_LOW,
1220                         (val & 0xFF));
1221         }
1222
1223 exit:
1224         ret = ov5650_write_reg_helper(info,
1225                 OV5650_SRM_GRUP_ACCESS,
1226                 (OV5650_GROUP_HOLD_END_BIT | OV5650_GROUP_ID(3)));
1227
1228         ret |= ov5650_write_reg_helper(info,
1229                 OV5650_SRM_GRUP_ACCESS,
1230                 (OV5650_GROUP_HOLD_BIT | OV5650_GROUP_LAUNCH_BIT |
1231                 OV5650_GROUP_ID(3)));
1232
1233         return ret;
1234 }
1235
1236 static int ov5650_test_pattern(struct ov5650_info *info,
1237                                enum ov5650_test_pattern pattern)
1238 {
1239         if (pattern >= ARRAY_SIZE(test_pattern_modes))
1240                 return -EINVAL;
1241
1242         return ov5650_write_table(info,
1243                                   test_pattern_modes[pattern],
1244                                   NULL, 0);
1245 }
1246
1247 static int set_power_helper(struct ov5650_platform_data *pdata,
1248                                 int powerLevel)
1249 {
1250         if (pdata) {
1251                 if (powerLevel && pdata->power_on)
1252                         pdata->power_on();
1253                 else if (pdata->power_off)
1254                         pdata->power_off();
1255         }
1256         return 0;
1257 }
1258
1259 static int ov5650_set_power(int powerLevel)
1260 {
1261         pr_info("%s: powerLevel=%d camera mode=%d\n", __func__, powerLevel,
1262                         stereo_ov5650_info->camera_mode);
1263
1264         if (StereoCameraMode_Left & stereo_ov5650_info->camera_mode)
1265                 set_power_helper(stereo_ov5650_info->left.pdata, powerLevel);
1266
1267         if (StereoCameraMode_Right & stereo_ov5650_info->camera_mode)
1268                 set_power_helper(stereo_ov5650_info->right.pdata, powerLevel);
1269
1270         return 0;
1271 }
1272
1273 static long ov5650_ioctl(struct file *file,
1274                          unsigned int cmd, unsigned long arg)
1275 {
1276         int err;
1277         struct ov5650_info *info = file->private_data;
1278
1279         switch (cmd) {
1280         case OV5650_IOCTL_SET_CAMERA_MODE:
1281         {
1282                 if (info->camera_mode != arg) {
1283                         err = ov5650_set_power(0);
1284                         if (err) {
1285                                 pr_info("%s %d\n", __func__, __LINE__);
1286                                 return err;
1287                         }
1288                         info->camera_mode = arg;
1289                         err = ov5650_set_power(1);
1290                         if (err)
1291                                 return err;
1292                 }
1293                 return 0;
1294         }
1295         case OV5650_IOCTL_SYNC_SENSORS:
1296                 if (info->right.pdata->synchronize_sensors)
1297                         info->right.pdata->synchronize_sensors();
1298                 return 0;
1299         case OV5650_IOCTL_SET_MODE:
1300         {
1301                 struct ov5650_mode mode;
1302                 if (copy_from_user(&mode,
1303                                    (const void __user *)arg,
1304                                    sizeof(struct ov5650_mode))) {
1305                         pr_info("%s %d\n", __func__, __LINE__);
1306                         return -EFAULT;
1307                 }
1308
1309                 return ov5650_set_mode(info, &mode);
1310         }
1311         case OV5650_IOCTL_SET_FRAME_LENGTH:
1312                 return ov5650_set_frame_length(info, (u32)arg);
1313         case OV5650_IOCTL_SET_COARSE_TIME:
1314                 return ov5650_set_coarse_time(info, (u32)arg);
1315         case OV5650_IOCTL_SET_GAIN:
1316                 return ov5650_set_gain(info, (u16)arg);
1317         case OV5650_IOCTL_SET_BINNING:
1318                 return ov5650_set_binning(info, (u8)arg);
1319         case OV5650_IOCTL_GET_STATUS:
1320         {
1321                 u16 status = 0;
1322                 if (copy_to_user((void __user *)arg, &status,
1323                                  2)) {
1324                         pr_info("%s %d\n", __func__, __LINE__);
1325                         return -EFAULT;
1326                 }
1327                 return 0;
1328         }
1329         case OV5650_IOCTL_TEST_PATTERN:
1330         {
1331                 err = ov5650_test_pattern(info, (enum ov5650_test_pattern) arg);
1332                 if (err)
1333                         pr_err("%s %d %d\n", __func__, __LINE__, err);
1334                 return err;
1335         }
1336         case OV5650_IOCTL_SET_GROUP_HOLD:
1337         {
1338                 struct ov5650_ae ae;
1339                 if (copy_from_user(&ae,
1340                                 (const void __user *)arg,
1341                                 sizeof(struct ov5650_ae))) {
1342                         pr_info("%s %d\n", __func__, __LINE__);
1343                         return -EFAULT;
1344                 }
1345                 return ov5650_set_group_hold(info, &ae);
1346         }
1347         default:
1348                 return -EINVAL;
1349         }
1350         return 0;
1351 }
1352
1353 static int ov5650_open(struct inode *inode, struct file *file)
1354 {
1355         pr_info("%s\n", __func__);
1356         file->private_data = stereo_ov5650_info;
1357         ov5650_set_power(1);
1358         return 0;
1359 }
1360
1361 int ov5650_release(struct inode *inode, struct file *file)
1362 {
1363         ov5650_set_power(0);
1364         file->private_data = NULL;
1365         return 0;
1366 }
1367
1368
1369 static const struct file_operations ov5650_fileops = {
1370         .owner = THIS_MODULE,
1371         .open = ov5650_open,
1372         .unlocked_ioctl = ov5650_ioctl,
1373         .release = ov5650_release,
1374 };
1375
1376 static struct miscdevice ov5650_device = {
1377         .minor = MISC_DYNAMIC_MINOR,
1378         .name = "ov5650",
1379         .fops = &ov5650_fileops,
1380 };
1381
1382 static int ov5650_probe_common(void)
1383 {
1384         int err;
1385
1386         if (!stereo_ov5650_info) {
1387                 stereo_ov5650_info = kzalloc(sizeof(struct ov5650_info),
1388                                         GFP_KERNEL);
1389                 if (!stereo_ov5650_info) {
1390                         pr_err("ov5650: Unable to allocate memory!\n");
1391                         return -ENOMEM;
1392                 }
1393
1394                 err = misc_register(&ov5650_device);
1395                 if (err) {
1396                         pr_err("ov5650: Unable to register misc device!\n");
1397                         kfree(stereo_ov5650_info);
1398                         return err;
1399                 }
1400         }
1401         return 0;
1402 }
1403
1404 static int ov5650_remove_common(struct i2c_client *client)
1405 {
1406         if (stereo_ov5650_info->left.i2c_client ||
1407                 stereo_ov5650_info->right.i2c_client)
1408                 return 0;
1409
1410         misc_deregister(&ov5650_device);
1411         kfree(stereo_ov5650_info);
1412         stereo_ov5650_info = NULL;
1413
1414         return 0;
1415 }
1416
1417 static int left_ov5650_probe(struct i2c_client *client,
1418                         const struct i2c_device_id *id)
1419 {
1420         int err;
1421         pr_info("%s: probing sensor.\n", __func__);
1422
1423         err = ov5650_probe_common();
1424         if (err)
1425                 return err;
1426
1427         stereo_ov5650_info->left.pdata = client->dev.platform_data;
1428         stereo_ov5650_info->left.i2c_client = client;
1429
1430         return 0;
1431 }
1432
1433 static int left_ov5650_remove(struct i2c_client *client)
1434 {
1435         if (stereo_ov5650_info) {
1436                 stereo_ov5650_info->left.i2c_client = NULL;
1437                 ov5650_remove_common(client);
1438         }
1439         return 0;
1440 }
1441
1442 static const struct i2c_device_id left_ov5650_id[] = {
1443         { "ov5650", 0 },
1444         { "ov5650L", 0 },
1445         { },
1446 };
1447
1448 MODULE_DEVICE_TABLE(i2c, left_ov5650_id);
1449
1450 static struct i2c_driver left_ov5650_i2c_driver = {
1451         .driver = {
1452                 .name = "ov5650",
1453                 .owner = THIS_MODULE,
1454         },
1455         .probe = left_ov5650_probe,
1456         .remove = left_ov5650_remove,
1457         .id_table = left_ov5650_id,
1458 };
1459
1460 static int right_ov5650_probe(struct i2c_client *client,
1461                         const struct i2c_device_id *id)
1462 {
1463         int err;
1464         pr_info("%s: probing sensor.\n", __func__);
1465
1466         err = ov5650_probe_common();
1467         if (err)
1468                 return err;
1469
1470         stereo_ov5650_info->right.pdata = client->dev.platform_data;
1471         stereo_ov5650_info->right.i2c_client = client;
1472
1473         return 0;
1474 }
1475
1476 static int right_ov5650_remove(struct i2c_client *client)
1477 {
1478         if (stereo_ov5650_info) {
1479                 stereo_ov5650_info->right.i2c_client = NULL;
1480                 ov5650_remove_common(client);
1481         }
1482         return 0;
1483 }
1484
1485 static const struct i2c_device_id right_ov5650_id[] = {
1486         { "ov5650R", 0 },
1487         { },
1488 };
1489
1490 MODULE_DEVICE_TABLE(i2c, right_ov5650_id);
1491
1492 static struct i2c_driver right_ov5650_i2c_driver = {
1493         .driver = {
1494                 .name = "ov5650R",
1495                 .owner = THIS_MODULE,
1496         },
1497         .probe = right_ov5650_probe,
1498         .remove = right_ov5650_remove,
1499         .id_table = right_ov5650_id,
1500 };
1501
1502 static int __init ov5650_init(void)
1503 {
1504         int ret;
1505         pr_info("ov5650 sensor driver loading\n");
1506         ret = i2c_add_driver(&left_ov5650_i2c_driver);
1507         if (ret)
1508                 return ret;
1509         return i2c_add_driver(&right_ov5650_i2c_driver);
1510 }
1511
1512 static void __exit ov5650_exit(void)
1513 {
1514         i2c_del_driver(&right_ov5650_i2c_driver);
1515         i2c_del_driver(&left_ov5650_i2c_driver);
1516 }
1517
1518 module_init(ov5650_init);
1519 module_exit(ov5650_exit);
1520