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17#include <linux/bitops.h>
18#include <linux/delay.h>
19#include <linux/i2c.h>
20#include <linux/kernel.h>
21#include <linux/slab.h>
22#include <linux/videodev2.h>
23#include <linux/module.h>
24#include <linux/v4l2-mediabus.h>
25
26#include <media/soc_camera.h>
27#include <media/v4l2-clk.h>
28#include <media/v4l2-subdev.h>
29
30
31#define REG_CHIP_ID_HIGH 0x300a
32#define REG_CHIP_ID_LOW 0x300b
33
34#define REG_WINDOW_START_X_HIGH 0x3800
35#define REG_WINDOW_START_X_LOW 0x3801
36#define REG_WINDOW_START_Y_HIGH 0x3802
37#define REG_WINDOW_START_Y_LOW 0x3803
38#define REG_WINDOW_WIDTH_HIGH 0x3804
39#define REG_WINDOW_WIDTH_LOW 0x3805
40#define REG_WINDOW_HEIGHT_HIGH 0x3806
41#define REG_WINDOW_HEIGHT_LOW 0x3807
42#define REG_OUT_WIDTH_HIGH 0x3808
43#define REG_OUT_WIDTH_LOW 0x3809
44#define REG_OUT_HEIGHT_HIGH 0x380a
45#define REG_OUT_HEIGHT_LOW 0x380b
46#define REG_OUT_TOTAL_WIDTH_HIGH 0x380c
47#define REG_OUT_TOTAL_WIDTH_LOW 0x380d
48#define REG_OUT_TOTAL_HEIGHT_HIGH 0x380e
49#define REG_OUT_TOTAL_HEIGHT_LOW 0x380f
50#define REG_OUTPUT_FORMAT 0x4300
51#define REG_ISP_CTRL_01 0x5001
52#define REG_AVG_WINDOW_END_X_HIGH 0x5682
53#define REG_AVG_WINDOW_END_X_LOW 0x5683
54#define REG_AVG_WINDOW_END_Y_HIGH 0x5686
55#define REG_AVG_WINDOW_END_Y_LOW 0x5687
56
57
58#define OV5642_SENSOR_SIZE_X 2592
59#define OV5642_SENSOR_SIZE_Y 1944
60
61
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69
70
71#define OV5642_MAX_WIDTH OV5642_SENSOR_SIZE_X
72#define OV5642_MAX_HEIGHT 720
73
74
75#define OV5642_DEFAULT_WIDTH 1280
76#define OV5642_DEFAULT_HEIGHT OV5642_MAX_HEIGHT
77
78
79#define BLANKING_EXTRA_WIDTH 500
80#define BLANKING_EXTRA_HEIGHT 20
81
82
83
84
85
86
87#define BLANKING_MIN_HEIGHT 1000
88
89struct regval_list {
90 u16 reg_num;
91 u8 value;
92};
93
94static struct regval_list ov5642_default_regs_init[] = {
95 { 0x3103, 0x93 },
96 { 0x3008, 0x82 },
97 { 0x3017, 0x7f },
98 { 0x3018, 0xfc },
99 { 0x3810, 0xc2 },
100 { 0x3615, 0xf0 },
101 { 0x3000, 0x0 },
102 { 0x3001, 0x0 },
103 { 0x3002, 0x0 },
104 { 0x3003, 0x0 },
105 { 0x3004, 0xff },
106 { 0x3030, 0x2b },
107 { 0x3011, 0x8 },
108 { 0x3010, 0x10 },
109 { 0x3604, 0x60 },
110 { 0x3622, 0x60 },
111 { 0x3621, 0x9 },
112 { 0x3709, 0x0 },
113 { 0x4000, 0x21 },
114 { 0x401d, 0x22 },
115 { 0x3600, 0x54 },
116 { 0x3605, 0x4 },
117 { 0x3606, 0x3f },
118 { 0x3c01, 0x80 },
119 { 0x300d, 0x22 },
120 { 0x3623, 0x22 },
121 { 0x5000, 0x4f },
122 { 0x5020, 0x4 },
123 { 0x5181, 0x79 },
124 { 0x5182, 0x0 },
125 { 0x5185, 0x22 },
126 { 0x5197, 0x1 },
127 { 0x5500, 0xa },
128 { 0x5504, 0x0 },
129 { 0x5505, 0x7f },
130 { 0x5080, 0x8 },
131 { 0x300e, 0x18 },
132 { 0x4610, 0x0 },
133 { 0x471d, 0x5 },
134 { 0x4708, 0x6 },
135 { 0x370c, 0xa0 },
136 { 0x5687, 0x94 },
137 { 0x501f, 0x0 },
138 { 0x5000, 0x4f },
139 { 0x5001, 0xcf },
140 { 0x4300, 0x30 },
141 { 0x4300, 0x30 },
142 { 0x460b, 0x35 },
143 { 0x471d, 0x0 },
144 { 0x3002, 0xc },
145 { 0x3002, 0x0 },
146 { 0x4713, 0x3 },
147 { 0x471c, 0x50 },
148 { 0x4721, 0x2 },
149 { 0x4402, 0x90 },
150 { 0x460c, 0x22 },
151 { 0x3815, 0x44 },
152 { 0x3503, 0x7 },
153 { 0x3501, 0x73 },
154 { 0x3502, 0x80 },
155 { 0x350b, 0x0 },
156 { 0x3818, 0xc8 },
157 { 0x3824, 0x11 },
158 { 0x3a00, 0x78 },
159 { 0x3a1a, 0x4 },
160 { 0x3a13, 0x30 },
161 { 0x3a18, 0x0 },
162 { 0x3a19, 0x7c },
163 { 0x3a08, 0x12 },
164 { 0x3a09, 0xc0 },
165 { 0x3a0a, 0xf },
166 { 0x3a0b, 0xa0 },
167 { 0x350c, 0x7 },
168 { 0x350d, 0xd0 },
169 { 0x3a0d, 0x8 },
170 { 0x3a0e, 0x6 },
171 { 0x3500, 0x0 },
172 { 0x3501, 0x0 },
173 { 0x3502, 0x0 },
174 { 0x350a, 0x0 },
175 { 0x350b, 0x0 },
176 { 0x3503, 0x0 },
177 { 0x3a0f, 0x3c },
178 { 0x3a10, 0x32 },
179 { 0x3a1b, 0x3c },
180 { 0x3a1e, 0x32 },
181 { 0x3a11, 0x80 },
182 { 0x3a1f, 0x20 },
183 { 0x3030, 0x2b },
184 { 0x3a02, 0x0 },
185 { 0x3a03, 0x7d },
186 { 0x3a04, 0x0 },
187 { 0x3a14, 0x0 },
188 { 0x3a15, 0x7d },
189 { 0x3a16, 0x0 },
190 { 0x3a00, 0x78 },
191 { 0x3a08, 0x9 },
192 { 0x3a09, 0x60 },
193 { 0x3a0a, 0x7 },
194 { 0x3a0b, 0xd0 },
195 { 0x3a0d, 0x10 },
196 { 0x3a0e, 0xd },
197 { 0x4407, 0x4 },
198 { 0x5193, 0x70 },
199 { 0x589b, 0x0 },
200 { 0x589a, 0xc0 },
201 { 0x401e, 0x20 },
202 { 0x4001, 0x42 },
203 { 0x401c, 0x6 },
204 { 0x3825, 0xac },
205 { 0x3827, 0xc },
206 { 0x528a, 0x1 },
207 { 0x528b, 0x4 },
208 { 0x528c, 0x8 },
209 { 0x528d, 0x10 },
210 { 0x528e, 0x20 },
211 { 0x528f, 0x28 },
212 { 0x5290, 0x30 },
213 { 0x5292, 0x0 },
214 { 0x5293, 0x1 },
215 { 0x5294, 0x0 },
216 { 0x5295, 0x4 },
217 { 0x5296, 0x0 },
218 { 0x5297, 0x8 },
219 { 0x5298, 0x0 },
220 { 0x5299, 0x10 },
221 { 0x529a, 0x0 },
222 { 0x529b, 0x20 },
223 { 0x529c, 0x0 },
224 { 0x529d, 0x28 },
225 { 0x529e, 0x0 },
226 { 0x529f, 0x30 },
227 { 0x5282, 0x0 },
228 { 0x5300, 0x0 },
229 { 0x5301, 0x20 },
230 { 0x5302, 0x0 },
231 { 0x5303, 0x7c },
232 { 0x530c, 0x0 },
233 { 0x530d, 0xc },
234 { 0x530e, 0x20 },
235 { 0x530f, 0x80 },
236 { 0x5310, 0x20 },
237 { 0x5311, 0x80 },
238 { 0x5308, 0x20 },
239 { 0x5309, 0x40 },
240 { 0x5304, 0x0 },
241 { 0x5305, 0x30 },
242 { 0x5306, 0x0 },
243 { 0x5307, 0x80 },
244 { 0x5314, 0x8 },
245 { 0x5315, 0x20 },
246 { 0x5319, 0x30 },
247 { 0x5316, 0x10 },
248 { 0x5317, 0x0 },
249 { 0x5318, 0x2 },
250 { 0x5380, 0x1 },
251 { 0x5381, 0x0 },
252 { 0x5382, 0x0 },
253 { 0x5383, 0x4e },
254 { 0x5384, 0x0 },
255 { 0x5385, 0xf },
256 { 0x5386, 0x0 },
257 { 0x5387, 0x0 },
258 { 0x5388, 0x1 },
259 { 0x5389, 0x15 },
260 { 0x538a, 0x0 },
261 { 0x538b, 0x31 },
262 { 0x538c, 0x0 },
263 { 0x538d, 0x0 },
264 { 0x538e, 0x0 },
265 { 0x538f, 0xf },
266 { 0x5390, 0x0 },
267 { 0x5391, 0xab },
268 { 0x5392, 0x0 },
269 { 0x5393, 0xa2 },
270 { 0x5394, 0x8 },
271 { 0x5480, 0x14 },
272 { 0x5481, 0x21 },
273 { 0x5482, 0x36 },
274 { 0x5483, 0x57 },
275 { 0x5484, 0x65 },
276 { 0x5485, 0x71 },
277 { 0x5486, 0x7d },
278 { 0x5487, 0x87 },
279 { 0x5488, 0x91 },
280 { 0x5489, 0x9a },
281 { 0x548a, 0xaa },
282 { 0x548b, 0xb8 },
283 { 0x548c, 0xcd },
284 { 0x548d, 0xdd },
285 { 0x548e, 0xea },
286 { 0x548f, 0x1d },
287 { 0x5490, 0x5 },
288 { 0x5491, 0x0 },
289 { 0x5492, 0x4 },
290 { 0x5493, 0x20 },
291 { 0x5494, 0x3 },
292 { 0x5495, 0x60 },
293 { 0x5496, 0x2 },
294 { 0x5497, 0xb8 },
295 { 0x5498, 0x2 },
296 { 0x5499, 0x86 },
297 { 0x549a, 0x2 },
298 { 0x549b, 0x5b },
299 { 0x549c, 0x2 },
300 { 0x549d, 0x3b },
301 { 0x549e, 0x2 },
302 { 0x549f, 0x1c },
303 { 0x54a0, 0x2 },
304 { 0x54a1, 0x4 },
305 { 0x54a2, 0x1 },
306 { 0x54a3, 0xed },
307 { 0x54a4, 0x1 },
308 { 0x54a5, 0xc5 },
309 { 0x54a6, 0x1 },
310 { 0x54a7, 0xa5 },
311 { 0x54a8, 0x1 },
312 { 0x54a9, 0x6c },
313 { 0x54aa, 0x1 },
314 { 0x54ab, 0x41 },
315 { 0x54ac, 0x1 },
316 { 0x54ad, 0x20 },
317 { 0x54ae, 0x0 },
318 { 0x54af, 0x16 },
319 { 0x54b0, 0x1 },
320 { 0x54b1, 0x20 },
321 { 0x54b2, 0x0 },
322 { 0x54b3, 0x10 },
323 { 0x54b4, 0x0 },
324 { 0x54b5, 0xf0 },
325 { 0x54b6, 0x0 },
326 { 0x54b7, 0xdf },
327 { 0x5402, 0x3f },
328 { 0x5403, 0x0 },
329 { 0x3406, 0x0 },
330 { 0x5180, 0xff },
331 { 0x5181, 0x52 },
332 { 0x5182, 0x11 },
333 { 0x5183, 0x14 },
334 { 0x5184, 0x25 },
335 { 0x5185, 0x24 },
336 { 0x5186, 0x6 },
337 { 0x5187, 0x8 },
338 { 0x5188, 0x8 },
339 { 0x5189, 0x7c },
340 { 0x518a, 0x60 },
341 { 0x518b, 0xb2 },
342 { 0x518c, 0xb2 },
343 { 0x518d, 0x44 },
344 { 0x518e, 0x3d },
345 { 0x518f, 0x58 },
346 { 0x5190, 0x46 },
347 { 0x5191, 0xf8 },
348 { 0x5192, 0x4 },
349 { 0x5193, 0x70 },
350 { 0x5194, 0xf0 },
351 { 0x5195, 0xf0 },
352 { 0x5196, 0x3 },
353 { 0x5197, 0x1 },
354 { 0x5198, 0x4 },
355 { 0x5199, 0x12 },
356 { 0x519a, 0x4 },
357 { 0x519b, 0x0 },
358 { 0x519c, 0x6 },
359 { 0x519d, 0x82 },
360 { 0x519e, 0x0 },
361 { 0x5025, 0x80 },
362 { 0x3a0f, 0x38 },
363 { 0x3a10, 0x30 },
364 { 0x3a1b, 0x3a },
365 { 0x3a1e, 0x2e },
366 { 0x3a11, 0x60 },
367 { 0x3a1f, 0x10 },
368 { 0x5688, 0xa6 },
369 { 0x5689, 0x6a },
370 { 0x568a, 0xea },
371 { 0x568b, 0xae },
372 { 0x568c, 0xa6 },
373 { 0x568d, 0x6a },
374 { 0x568e, 0x62 },
375 { 0x568f, 0x26 },
376 { 0x5583, 0x40 },
377 { 0x5584, 0x40 },
378 { 0x5580, 0x2 },
379 { 0x5000, 0xcf },
380 { 0x5800, 0x27 },
381 { 0x5801, 0x19 },
382 { 0x5802, 0x12 },
383 { 0x5803, 0xf },
384 { 0x5804, 0x10 },
385 { 0x5805, 0x15 },
386 { 0x5806, 0x1e },
387 { 0x5807, 0x2f },
388 { 0x5808, 0x15 },
389 { 0x5809, 0xd },
390 { 0x580a, 0xa },
391 { 0x580b, 0x9 },
392 { 0x580c, 0xa },
393 { 0x580d, 0xc },
394 { 0x580e, 0x12 },
395 { 0x580f, 0x19 },
396 { 0x5810, 0xb },
397 { 0x5811, 0x7 },
398 { 0x5812, 0x4 },
399 { 0x5813, 0x3 },
400 { 0x5814, 0x3 },
401 { 0x5815, 0x6 },
402 { 0x5816, 0xa },
403 { 0x5817, 0xf },
404 { 0x5818, 0xa },
405 { 0x5819, 0x5 },
406 { 0x581a, 0x1 },
407 { 0x581b, 0x0 },
408 { 0x581c, 0x0 },
409 { 0x581d, 0x3 },
410 { 0x581e, 0x8 },
411 { 0x581f, 0xc },
412 { 0x5820, 0xa },
413 { 0x5821, 0x5 },
414 { 0x5822, 0x1 },
415 { 0x5823, 0x0 },
416 { 0x5824, 0x0 },
417 { 0x5825, 0x3 },
418 { 0x5826, 0x8 },
419 { 0x5827, 0xc },
420 { 0x5828, 0xe },
421 { 0x5829, 0x8 },
422 { 0x582a, 0x6 },
423 { 0x582b, 0x4 },
424 { 0x582c, 0x5 },
425 { 0x582d, 0x7 },
426 { 0x582e, 0xb },
427 { 0x582f, 0x12 },
428 { 0x5830, 0x18 },
429 { 0x5831, 0x10 },
430 { 0x5832, 0xc },
431 { 0x5833, 0xa },
432 { 0x5834, 0xb },
433 { 0x5835, 0xe },
434 { 0x5836, 0x15 },
435 { 0x5837, 0x19 },
436 { 0x5838, 0x32 },
437 { 0x5839, 0x1f },
438 { 0x583a, 0x18 },
439 { 0x583b, 0x16 },
440 { 0x583c, 0x17 },
441 { 0x583d, 0x1e },
442 { 0x583e, 0x26 },
443 { 0x583f, 0x53 },
444 { 0x5840, 0x10 },
445 { 0x5841, 0xf },
446 { 0x5842, 0xd },
447 { 0x5843, 0xc },
448 { 0x5844, 0xe },
449 { 0x5845, 0x9 },
450 { 0x5846, 0x11 },
451 { 0x5847, 0x10 },
452 { 0x5848, 0x10 },
453 { 0x5849, 0x10 },
454 { 0x584a, 0x10 },
455 { 0x584b, 0xe },
456 { 0x584c, 0x10 },
457 { 0x584d, 0x10 },
458 { 0x584e, 0x11 },
459 { 0x584f, 0x10 },
460 { 0x5850, 0xf },
461 { 0x5851, 0xc },
462 { 0x5852, 0xf },
463 { 0x5853, 0x10 },
464 { 0x5854, 0x10 },
465 { 0x5855, 0xf },
466 { 0x5856, 0xe },
467 { 0x5857, 0xb },
468 { 0x5858, 0x10 },
469 { 0x5859, 0xd },
470 { 0x585a, 0xd },
471 { 0x585b, 0xc },
472 { 0x585c, 0xc },
473 { 0x585d, 0xc },
474 { 0x585e, 0xb },
475 { 0x585f, 0xc },
476 { 0x5860, 0xc },
477 { 0x5861, 0xc },
478 { 0x5862, 0xd },
479 { 0x5863, 0x8 },
480 { 0x5864, 0x11 },
481 { 0x5865, 0x18 },
482 { 0x5866, 0x18 },
483 { 0x5867, 0x19 },
484 { 0x5868, 0x17 },
485 { 0x5869, 0x19 },
486 { 0x586a, 0x16 },
487 { 0x586b, 0x13 },
488 { 0x586c, 0x13 },
489 { 0x586d, 0x12 },
490 { 0x586e, 0x13 },
491 { 0x586f, 0x16 },
492 { 0x5870, 0x14 },
493 { 0x5871, 0x12 },
494 { 0x5872, 0x10 },
495 { 0x5873, 0x11 },
496 { 0x5874, 0x11 },
497 { 0x5875, 0x16 },
498 { 0x5876, 0x14 },
499 { 0x5877, 0x11 },
500 { 0x5878, 0x10 },
501 { 0x5879, 0xf },
502 { 0x587a, 0x10 },
503 { 0x587b, 0x14 },
504 { 0x587c, 0x13 },
505 { 0x587d, 0x12 },
506 { 0x587e, 0x11 },
507 { 0x587f, 0x11 },
508 { 0x5880, 0x12 },
509 { 0x5881, 0x15 },
510 { 0x5882, 0x14 },
511 { 0x5883, 0x15 },
512 { 0x5884, 0x15 },
513 { 0x5885, 0x15 },
514 { 0x5886, 0x13 },
515 { 0x5887, 0x17 },
516 { 0x3710, 0x10 },
517 { 0x3632, 0x51 },
518 { 0x3702, 0x10 },
519 { 0x3703, 0xb2 },
520 { 0x3704, 0x18 },
521 { 0x370b, 0x40 },
522 { 0x370d, 0x3 },
523 { 0x3631, 0x1 },
524 { 0x3632, 0x52 },
525 { 0x3606, 0x24 },
526 { 0x3620, 0x96 },
527 { 0x5785, 0x7 },
528 { 0x3a13, 0x30 },
529 { 0x3600, 0x52 },
530 { 0x3604, 0x48 },
531 { 0x3606, 0x1b },
532 { 0x370d, 0xb },
533 { 0x370f, 0xc0 },
534 { 0x3709, 0x1 },
535 { 0x3823, 0x0 },
536 { 0x5007, 0x0 },
537 { 0x5009, 0x0 },
538 { 0x5011, 0x0 },
539 { 0x5013, 0x0 },
540 { 0x519e, 0x0 },
541 { 0x5086, 0x0 },
542 { 0x5087, 0x0 },
543 { 0x5088, 0x0 },
544 { 0x5089, 0x0 },
545 { 0x302b, 0x0 },
546 { 0x3503, 0x7 },
547 { 0x3011, 0x8 },
548 { 0x350c, 0x2 },
549 { 0x350d, 0xe4 },
550 { 0x3621, 0xc9 },
551 { 0x370a, 0x81 },
552 { 0xffff, 0xff },
553};
554
555static struct regval_list ov5642_default_regs_finalise[] = {
556 { 0x3810, 0xc2 },
557 { 0x3818, 0xc9 },
558 { 0x381c, 0x10 },
559 { 0x381d, 0xa0 },
560 { 0x381e, 0x5 },
561 { 0x381f, 0xb0 },
562 { 0x3820, 0x0 },
563 { 0x3821, 0x0 },
564 { 0x3824, 0x11 },
565 { 0x3a08, 0x1b },
566 { 0x3a09, 0xc0 },
567 { 0x3a0a, 0x17 },
568 { 0x3a0b, 0x20 },
569 { 0x3a0d, 0x2 },
570 { 0x3a0e, 0x1 },
571 { 0x401c, 0x4 },
572 { 0x5682, 0x5 },
573 { 0x5683, 0x0 },
574 { 0x5686, 0x2 },
575 { 0x5687, 0xcc },
576 { 0x5001, 0x4f },
577 { 0x589b, 0x6 },
578 { 0x589a, 0xc5 },
579 { 0x3503, 0x0 },
580 { 0x460c, 0x20 },
581 { 0x460b, 0x37 },
582 { 0x471c, 0xd0 },
583 { 0x471d, 0x5 },
584 { 0x3815, 0x1 },
585 { 0x3818, 0xc1 },
586 { 0x501f, 0x0 },
587 { 0x5002, 0xe0 },
588 { 0x4300, 0x32 },
589 { 0x3002, 0x1c },
590 { 0x4800, 0x14 },
591 { 0x4801, 0xf },
592 { 0x3007, 0x3b },
593 { 0x300e, 0x4 },
594 { 0x4803, 0x50 },
595 { 0x3815, 0x1 },
596 { 0x4713, 0x2 },
597 { 0x4842, 0x1 },
598 { 0x300f, 0xe },
599 { 0x3003, 0x3 },
600 { 0x3003, 0x1 },
601 { 0xffff, 0xff },
602};
603
604struct ov5642_datafmt {
605 u32 code;
606 enum v4l2_colorspace colorspace;
607};
608
609struct ov5642 {
610 struct v4l2_subdev subdev;
611 const struct ov5642_datafmt *fmt;
612 struct v4l2_rect crop_rect;
613 struct v4l2_clk *clk;
614
615
616 int total_width;
617 int total_height;
618};
619
620static const struct ov5642_datafmt ov5642_colour_fmts[] = {
621 {MEDIA_BUS_FMT_UYVY8_2X8, V4L2_COLORSPACE_JPEG},
622};
623
624static struct ov5642 *to_ov5642(const struct i2c_client *client)
625{
626 return container_of(i2c_get_clientdata(client), struct ov5642, subdev);
627}
628
629
630static const struct ov5642_datafmt
631 *ov5642_find_datafmt(u32 code)
632{
633 int i;
634
635 for (i = 0; i < ARRAY_SIZE(ov5642_colour_fmts); i++)
636 if (ov5642_colour_fmts[i].code == code)
637 return ov5642_colour_fmts + i;
638
639 return NULL;
640}
641
642static int reg_read(struct i2c_client *client, u16 reg, u8 *val)
643{
644 int ret;
645
646 unsigned char data[2] = { reg >> 8, reg & 0xff };
647
648 ret = i2c_master_send(client, data, 2);
649 if (ret < 2) {
650 dev_err(&client->dev, "%s: i2c read error, reg: %x\n",
651 __func__, reg);
652 return ret < 0 ? ret : -EIO;
653 }
654
655 ret = i2c_master_recv(client, val, 1);
656 if (ret < 1) {
657 dev_err(&client->dev, "%s: i2c read error, reg: %x\n",
658 __func__, reg);
659 return ret < 0 ? ret : -EIO;
660 }
661 return 0;
662}
663
664static int reg_write(struct i2c_client *client, u16 reg, u8 val)
665{
666 int ret;
667 unsigned char data[3] = { reg >> 8, reg & 0xff, val };
668
669 ret = i2c_master_send(client, data, 3);
670 if (ret < 3) {
671 dev_err(&client->dev, "%s: i2c write error, reg: %x\n",
672 __func__, reg);
673 return ret < 0 ? ret : -EIO;
674 }
675
676 return 0;
677}
678
679
680
681
682
683static int reg_write16(struct i2c_client *client, u16 reg, u16 val16)
684{
685 int ret;
686
687 ret = reg_write(client, reg, val16 >> 8);
688 if (ret)
689 return ret;
690 return reg_write(client, reg + 1, val16 & 0x00ff);
691}
692
693#ifdef CONFIG_VIDEO_ADV_DEBUG
694static int ov5642_get_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
695{
696 struct i2c_client *client = v4l2_get_subdevdata(sd);
697 int ret;
698 u8 val;
699
700 if (reg->reg & ~0xffff)
701 return -EINVAL;
702
703 reg->size = 1;
704
705 ret = reg_read(client, reg->reg, &val);
706 if (!ret)
707 reg->val = (__u64)val;
708
709 return ret;
710}
711
712static int ov5642_set_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
713{
714 struct i2c_client *client = v4l2_get_subdevdata(sd);
715
716 if (reg->reg & ~0xffff || reg->val & ~0xff)
717 return -EINVAL;
718
719 return reg_write(client, reg->reg, reg->val);
720}
721#endif
722
723static int ov5642_write_array(struct i2c_client *client,
724 struct regval_list *vals)
725{
726 while (vals->reg_num != 0xffff || vals->value != 0xff) {
727 int ret = reg_write(client, vals->reg_num, vals->value);
728 if (ret < 0)
729 return ret;
730 vals++;
731 }
732 dev_dbg(&client->dev, "Register list loaded\n");
733 return 0;
734}
735
736static int ov5642_set_resolution(struct v4l2_subdev *sd)
737{
738 struct i2c_client *client = v4l2_get_subdevdata(sd);
739 struct ov5642 *priv = to_ov5642(client);
740 int width = priv->crop_rect.width;
741 int height = priv->crop_rect.height;
742 int total_width = priv->total_width;
743 int total_height = priv->total_height;
744 int start_x = (OV5642_SENSOR_SIZE_X - width) / 2;
745 int start_y = (OV5642_SENSOR_SIZE_Y - height) / 2;
746 int ret;
747
748
749
750
751
752 ret = reg_write16(client, REG_WINDOW_START_X_HIGH, start_x);
753 if (!ret)
754 ret = reg_write16(client, REG_WINDOW_START_Y_HIGH, start_y);
755 if (!ret) {
756 priv->crop_rect.left = start_x;
757 priv->crop_rect.top = start_y;
758 }
759
760 if (!ret)
761 ret = reg_write16(client, REG_WINDOW_WIDTH_HIGH, width);
762 if (!ret)
763 ret = reg_write16(client, REG_WINDOW_HEIGHT_HIGH, height);
764 if (ret)
765 return ret;
766 priv->crop_rect.width = width;
767 priv->crop_rect.height = height;
768
769
770 ret = reg_write16(client, REG_OUT_WIDTH_HIGH, width);
771 if (!ret)
772 ret = reg_write16(client, REG_OUT_HEIGHT_HIGH, height);
773
774
775 if (!ret)
776 ret = reg_write16(client, REG_OUT_TOTAL_WIDTH_HIGH, total_width);
777 if (!ret)
778 ret = reg_write16(client, REG_OUT_TOTAL_HEIGHT_HIGH, total_height);
779
780
781 if (!ret)
782 ret = reg_write16(client, REG_AVG_WINDOW_END_X_HIGH, width);
783 if (!ret)
784 ret = reg_write16(client, REG_AVG_WINDOW_END_Y_HIGH, height);
785
786 return ret;
787}
788
789static int ov5642_set_fmt(struct v4l2_subdev *sd,
790 struct v4l2_subdev_pad_config *cfg,
791 struct v4l2_subdev_format *format)
792{
793 struct v4l2_mbus_framefmt *mf = &format->format;
794 struct i2c_client *client = v4l2_get_subdevdata(sd);
795 struct ov5642 *priv = to_ov5642(client);
796 const struct ov5642_datafmt *fmt = ov5642_find_datafmt(mf->code);
797
798 if (format->pad)
799 return -EINVAL;
800
801 mf->width = priv->crop_rect.width;
802 mf->height = priv->crop_rect.height;
803
804 if (!fmt) {
805 if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
806 return -EINVAL;
807 mf->code = ov5642_colour_fmts[0].code;
808 mf->colorspace = ov5642_colour_fmts[0].colorspace;
809 }
810
811 mf->field = V4L2_FIELD_NONE;
812
813 if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
814 priv->fmt = ov5642_find_datafmt(mf->code);
815 else
816 cfg->try_fmt = *mf;
817 return 0;
818}
819
820static int ov5642_get_fmt(struct v4l2_subdev *sd,
821 struct v4l2_subdev_pad_config *cfg,
822 struct v4l2_subdev_format *format)
823{
824 struct v4l2_mbus_framefmt *mf = &format->format;
825 struct i2c_client *client = v4l2_get_subdevdata(sd);
826 struct ov5642 *priv = to_ov5642(client);
827
828 const struct ov5642_datafmt *fmt = priv->fmt;
829
830 if (format->pad)
831 return -EINVAL;
832
833 mf->code = fmt->code;
834 mf->colorspace = fmt->colorspace;
835 mf->width = priv->crop_rect.width;
836 mf->height = priv->crop_rect.height;
837 mf->field = V4L2_FIELD_NONE;
838
839 return 0;
840}
841
842static int ov5642_enum_mbus_code(struct v4l2_subdev *sd,
843 struct v4l2_subdev_pad_config *cfg,
844 struct v4l2_subdev_mbus_code_enum *code)
845{
846 if (code->pad || code->index >= ARRAY_SIZE(ov5642_colour_fmts))
847 return -EINVAL;
848
849 code->code = ov5642_colour_fmts[code->index].code;
850 return 0;
851}
852
853static int ov5642_s_crop(struct v4l2_subdev *sd, const struct v4l2_crop *a)
854{
855 struct i2c_client *client = v4l2_get_subdevdata(sd);
856 struct ov5642 *priv = to_ov5642(client);
857 struct v4l2_rect rect = a->c;
858 int ret;
859
860 v4l_bound_align_image(&rect.width, 48, OV5642_MAX_WIDTH, 1,
861 &rect.height, 32, OV5642_MAX_HEIGHT, 1, 0);
862
863 priv->crop_rect.width = rect.width;
864 priv->crop_rect.height = rect.height;
865 priv->total_width = rect.width + BLANKING_EXTRA_WIDTH;
866 priv->total_height = max_t(int, rect.height +
867 BLANKING_EXTRA_HEIGHT,
868 BLANKING_MIN_HEIGHT);
869 priv->crop_rect.width = rect.width;
870 priv->crop_rect.height = rect.height;
871
872 ret = ov5642_write_array(client, ov5642_default_regs_init);
873 if (!ret)
874 ret = ov5642_set_resolution(sd);
875 if (!ret)
876 ret = ov5642_write_array(client, ov5642_default_regs_finalise);
877
878 return ret;
879}
880
881static int ov5642_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
882{
883 struct i2c_client *client = v4l2_get_subdevdata(sd);
884 struct ov5642 *priv = to_ov5642(client);
885 struct v4l2_rect *rect = &a->c;
886
887 if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
888 return -EINVAL;
889
890 *rect = priv->crop_rect;
891
892 return 0;
893}
894
895static int ov5642_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
896{
897 a->bounds.left = 0;
898 a->bounds.top = 0;
899 a->bounds.width = OV5642_MAX_WIDTH;
900 a->bounds.height = OV5642_MAX_HEIGHT;
901 a->defrect = a->bounds;
902 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
903 a->pixelaspect.numerator = 1;
904 a->pixelaspect.denominator = 1;
905
906 return 0;
907}
908
909static int ov5642_g_mbus_config(struct v4l2_subdev *sd,
910 struct v4l2_mbus_config *cfg)
911{
912 cfg->type = V4L2_MBUS_CSI2;
913 cfg->flags = V4L2_MBUS_CSI2_2_LANE | V4L2_MBUS_CSI2_CHANNEL_0 |
914 V4L2_MBUS_CSI2_CONTINUOUS_CLOCK;
915
916 return 0;
917}
918
919static int ov5642_s_power(struct v4l2_subdev *sd, int on)
920{
921 struct i2c_client *client = v4l2_get_subdevdata(sd);
922 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
923 struct ov5642 *priv = to_ov5642(client);
924 int ret;
925
926 if (!on)
927 return soc_camera_power_off(&client->dev, ssdd, priv->clk);
928
929 ret = soc_camera_power_on(&client->dev, ssdd, priv->clk);
930 if (ret < 0)
931 return ret;
932
933 ret = ov5642_write_array(client, ov5642_default_regs_init);
934 if (!ret)
935 ret = ov5642_set_resolution(sd);
936 if (!ret)
937 ret = ov5642_write_array(client, ov5642_default_regs_finalise);
938
939 return ret;
940}
941
942static struct v4l2_subdev_video_ops ov5642_subdev_video_ops = {
943 .s_crop = ov5642_s_crop,
944 .g_crop = ov5642_g_crop,
945 .cropcap = ov5642_cropcap,
946 .g_mbus_config = ov5642_g_mbus_config,
947};
948
949static const struct v4l2_subdev_pad_ops ov5642_subdev_pad_ops = {
950 .enum_mbus_code = ov5642_enum_mbus_code,
951 .get_fmt = ov5642_get_fmt,
952 .set_fmt = ov5642_set_fmt,
953};
954
955static struct v4l2_subdev_core_ops ov5642_subdev_core_ops = {
956 .s_power = ov5642_s_power,
957#ifdef CONFIG_VIDEO_ADV_DEBUG
958 .g_register = ov5642_get_register,
959 .s_register = ov5642_set_register,
960#endif
961};
962
963static struct v4l2_subdev_ops ov5642_subdev_ops = {
964 .core = &ov5642_subdev_core_ops,
965 .video = &ov5642_subdev_video_ops,
966 .pad = &ov5642_subdev_pad_ops,
967};
968
969static int ov5642_video_probe(struct i2c_client *client)
970{
971 struct v4l2_subdev *subdev = i2c_get_clientdata(client);
972 int ret;
973 u8 id_high, id_low;
974 u16 id;
975
976 ret = ov5642_s_power(subdev, 1);
977 if (ret < 0)
978 return ret;
979
980
981 ret = reg_read(client, REG_CHIP_ID_HIGH, &id_high);
982 if (ret < 0)
983 goto done;
984
985 id = id_high << 8;
986
987 ret = reg_read(client, REG_CHIP_ID_LOW, &id_low);
988 if (ret < 0)
989 goto done;
990
991 id |= id_low;
992
993 dev_info(&client->dev, "Chip ID 0x%04x detected\n", id);
994
995 if (id != 0x5642) {
996 ret = -ENODEV;
997 goto done;
998 }
999
1000 ret = 0;
1001
1002done:
1003 ov5642_s_power(subdev, 0);
1004 return ret;
1005}
1006
1007static int ov5642_probe(struct i2c_client *client,
1008 const struct i2c_device_id *did)
1009{
1010 struct ov5642 *priv;
1011 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
1012 int ret;
1013
1014 if (!ssdd) {
1015 dev_err(&client->dev, "OV5642: missing platform data!\n");
1016 return -EINVAL;
1017 }
1018
1019 priv = devm_kzalloc(&client->dev, sizeof(struct ov5642), GFP_KERNEL);
1020 if (!priv)
1021 return -ENOMEM;
1022
1023 v4l2_i2c_subdev_init(&priv->subdev, client, &ov5642_subdev_ops);
1024
1025 priv->fmt = &ov5642_colour_fmts[0];
1026
1027 priv->crop_rect.width = OV5642_DEFAULT_WIDTH;
1028 priv->crop_rect.height = OV5642_DEFAULT_HEIGHT;
1029 priv->crop_rect.left = (OV5642_MAX_WIDTH - OV5642_DEFAULT_WIDTH) / 2;
1030 priv->crop_rect.top = (OV5642_MAX_HEIGHT - OV5642_DEFAULT_HEIGHT) / 2;
1031 priv->total_width = OV5642_DEFAULT_WIDTH + BLANKING_EXTRA_WIDTH;
1032 priv->total_height = BLANKING_MIN_HEIGHT;
1033
1034 priv->clk = v4l2_clk_get(&client->dev, "mclk");
1035 if (IS_ERR(priv->clk))
1036 return PTR_ERR(priv->clk);
1037
1038 ret = ov5642_video_probe(client);
1039 if (ret < 0)
1040 v4l2_clk_put(priv->clk);
1041
1042 return ret;
1043}
1044
1045static int ov5642_remove(struct i2c_client *client)
1046{
1047 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
1048 struct ov5642 *priv = to_ov5642(client);
1049
1050 v4l2_clk_put(priv->clk);
1051 if (ssdd->free_bus)
1052 ssdd->free_bus(ssdd);
1053
1054 return 0;
1055}
1056
1057static const struct i2c_device_id ov5642_id[] = {
1058 { "ov5642", 0 },
1059 { }
1060};
1061MODULE_DEVICE_TABLE(i2c, ov5642_id);
1062
1063static struct i2c_driver ov5642_i2c_driver = {
1064 .driver = {
1065 .name = "ov5642",
1066 },
1067 .probe = ov5642_probe,
1068 .remove = ov5642_remove,
1069 .id_table = ov5642_id,
1070};
1071
1072module_i2c_driver(ov5642_i2c_driver);
1073
1074MODULE_DESCRIPTION("Omnivision OV5642 Camera driver");
1075MODULE_AUTHOR("Bastian Hecht <hechtb@gmail.com>");
1076MODULE_LICENSE("GPL v2");
1077
