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path: root/drivers/media/i2c/soc_camera/ov5642.c
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Diffstat (limited to 'drivers/media/i2c/soc_camera/ov5642.c')
-rw-r--r--drivers/media/i2c/soc_camera/ov5642.c1073
1 files changed, 1073 insertions, 0 deletions
diff --git a/drivers/media/i2c/soc_camera/ov5642.c b/drivers/media/i2c/soc_camera/ov5642.c
new file mode 100644
index 000000000000..0bc93313d37a
--- /dev/null
+++ b/drivers/media/i2c/soc_camera/ov5642.c
@@ -0,0 +1,1073 @@
1/*
2 * Driver for OV5642 CMOS Image Sensor from Omnivision
3 *
4 * Copyright (C) 2011, Bastian Hecht <hechtb@gmail.com>
5 *
6 * Based on Sony IMX074 Camera Driver
7 * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
8 *
9 * Based on Omnivision OV7670 Camera Driver
10 * Copyright (C) 2006-7 Jonathan Corbet <corbet@lwn.net>
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
15 */
16
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-chip-ident.h>
28#include <media/v4l2-subdev.h>
29
30/* OV5642 registers */
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/* active pixel array size */
58#define OV5642_SENSOR_SIZE_X 2592
59#define OV5642_SENSOR_SIZE_Y 1944
60
61/*
62 * About OV5642 resolution, cropping and binning:
63 * This sensor supports it all, at least in the feature description.
64 * Unfortunately, no combination of appropriate registers settings could make
65 * the chip work the intended way. As it works with predefined register lists,
66 * some undocumented registers are presumably changed there to achieve their
67 * goals.
68 * This driver currently only works for resolutions up to 720 lines with a
69 * 1:1 scale. Hopefully these restrictions will be removed in the future.
70 */
71#define OV5642_MAX_WIDTH OV5642_SENSOR_SIZE_X
72#define OV5642_MAX_HEIGHT 720
73
74/* default sizes */
75#define OV5642_DEFAULT_WIDTH 1280
76#define OV5642_DEFAULT_HEIGHT OV5642_MAX_HEIGHT
77
78/* minimum extra blanking */
79#define BLANKING_EXTRA_WIDTH 500
80#define BLANKING_EXTRA_HEIGHT 20
81
82/*
83 * the sensor's autoexposure is buggy when setting total_height low.
84 * It tries to expose longer than 1 frame period without taking care of it
85 * and this leads to weird output. So we set 1000 lines as minimum.
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 }, /* UYVY */
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 enum v4l2_mbus_pixelcode 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
614 /* blanking information */
615 int total_width;
616 int total_height;
617};
618
619static const struct ov5642_datafmt ov5642_colour_fmts[] = {
620 {V4L2_MBUS_FMT_UYVY8_2X8, V4L2_COLORSPACE_JPEG},
621};
622
623static struct ov5642 *to_ov5642(const struct i2c_client *client)
624{
625 return container_of(i2c_get_clientdata(client), struct ov5642, subdev);
626}
627
628/* Find a data format by a pixel code in an array */
629static const struct ov5642_datafmt
630 *ov5642_find_datafmt(enum v4l2_mbus_pixelcode code)
631{
632 int i;
633
634 for (i = 0; i < ARRAY_SIZE(ov5642_colour_fmts); i++)
635 if (ov5642_colour_fmts[i].code == code)
636 return ov5642_colour_fmts + i;
637
638 return NULL;
639}
640
641static int reg_read(struct i2c_client *client, u16 reg, u8 *val)
642{
643 int ret;
644 /* We have 16-bit i2c addresses - care for endianess */
645 unsigned char data[2] = { reg >> 8, reg & 0xff };
646
647 ret = i2c_master_send(client, data, 2);
648 if (ret < 2) {
649 dev_err(&client->dev, "%s: i2c read error, reg: %x\n",
650 __func__, reg);
651 return ret < 0 ? ret : -EIO;
652 }
653
654 ret = i2c_master_recv(client, val, 1);
655 if (ret < 1) {
656 dev_err(&client->dev, "%s: i2c read error, reg: %x\n",
657 __func__, reg);
658 return ret < 0 ? ret : -EIO;
659 }
660 return 0;
661}
662
663static int reg_write(struct i2c_client *client, u16 reg, u8 val)
664{
665 int ret;
666 unsigned char data[3] = { reg >> 8, reg & 0xff, val };
667
668 ret = i2c_master_send(client, data, 3);
669 if (ret < 3) {
670 dev_err(&client->dev, "%s: i2c write error, reg: %x\n",
671 __func__, reg);
672 return ret < 0 ? ret : -EIO;
673 }
674
675 return 0;
676}
677
678/*
679 * convenience function to write 16 bit register values that are split up
680 * into two consecutive high and low parts
681 */
682static int reg_write16(struct i2c_client *client, u16 reg, u16 val16)
683{
684 int ret;
685
686 ret = reg_write(client, reg, val16 >> 8);
687 if (ret)
688 return ret;
689 return reg_write(client, reg + 1, val16 & 0x00ff);
690}
691
692#ifdef CONFIG_VIDEO_ADV_DEBUG
693static int ov5642_get_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
694{
695 struct i2c_client *client = v4l2_get_subdevdata(sd);
696 int ret;
697 u8 val;
698
699 if (reg->reg & ~0xffff)
700 return -EINVAL;
701
702 reg->size = 1;
703
704 ret = reg_read(client, reg->reg, &val);
705 if (!ret)
706 reg->val = (__u64)val;
707
708 return ret;
709}
710
711static int ov5642_set_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
712{
713 struct i2c_client *client = v4l2_get_subdevdata(sd);
714
715 if (reg->reg & ~0xffff || reg->val & ~0xff)
716 return -EINVAL;
717
718 return reg_write(client, reg->reg, reg->val);
719}
720#endif
721
722static int ov5642_write_array(struct i2c_client *client,
723 struct regval_list *vals)
724{
725 while (vals->reg_num != 0xffff || vals->value != 0xff) {
726 int ret = reg_write(client, vals->reg_num, vals->value);
727 if (ret < 0)
728 return ret;
729 vals++;
730 }
731 dev_dbg(&client->dev, "Register list loaded\n");
732 return 0;
733}
734
735static int ov5642_set_resolution(struct v4l2_subdev *sd)
736{
737 struct i2c_client *client = v4l2_get_subdevdata(sd);
738 struct ov5642 *priv = to_ov5642(client);
739 int width = priv->crop_rect.width;
740 int height = priv->crop_rect.height;
741 int total_width = priv->total_width;
742 int total_height = priv->total_height;
743 int start_x = (OV5642_SENSOR_SIZE_X - width) / 2;
744 int start_y = (OV5642_SENSOR_SIZE_Y - height) / 2;
745 int ret;
746
747 /*
748 * This should set the starting point for cropping.
749 * Doesn't work so far.
750 */
751 ret = reg_write16(client, REG_WINDOW_START_X_HIGH, start_x);
752 if (!ret)
753 ret = reg_write16(client, REG_WINDOW_START_Y_HIGH, start_y);
754 if (!ret) {
755 priv->crop_rect.left = start_x;
756 priv->crop_rect.top = start_y;
757 }
758
759 if (!ret)
760 ret = reg_write16(client, REG_WINDOW_WIDTH_HIGH, width);
761 if (!ret)
762 ret = reg_write16(client, REG_WINDOW_HEIGHT_HIGH, height);
763 if (ret)
764 return ret;
765 priv->crop_rect.width = width;
766 priv->crop_rect.height = height;
767
768 /* Set the output window size. Only 1:1 scale is supported so far. */
769 ret = reg_write16(client, REG_OUT_WIDTH_HIGH, width);
770 if (!ret)
771 ret = reg_write16(client, REG_OUT_HEIGHT_HIGH, height);
772
773 /* Total width = output size + blanking */
774 if (!ret)
775 ret = reg_write16(client, REG_OUT_TOTAL_WIDTH_HIGH, total_width);
776 if (!ret)
777 ret = reg_write16(client, REG_OUT_TOTAL_HEIGHT_HIGH, total_height);
778
779 /* Sets the window for AWB calculations */
780 if (!ret)
781 ret = reg_write16(client, REG_AVG_WINDOW_END_X_HIGH, width);
782 if (!ret)
783 ret = reg_write16(client, REG_AVG_WINDOW_END_Y_HIGH, height);
784
785 return ret;
786}
787
788static int ov5642_try_fmt(struct v4l2_subdev *sd,
789 struct v4l2_mbus_framefmt *mf)
790{
791 struct i2c_client *client = v4l2_get_subdevdata(sd);
792 struct ov5642 *priv = to_ov5642(client);
793 const struct ov5642_datafmt *fmt = ov5642_find_datafmt(mf->code);
794
795 mf->width = priv->crop_rect.width;
796 mf->height = priv->crop_rect.height;
797
798 if (!fmt) {
799 mf->code = ov5642_colour_fmts[0].code;
800 mf->colorspace = ov5642_colour_fmts[0].colorspace;
801 }
802
803 mf->field = V4L2_FIELD_NONE;
804
805 return 0;
806}
807
808static int ov5642_s_fmt(struct v4l2_subdev *sd,
809 struct v4l2_mbus_framefmt *mf)
810{
811 struct i2c_client *client = v4l2_get_subdevdata(sd);
812 struct ov5642 *priv = to_ov5642(client);
813
814 /* MIPI CSI could have changed the format, double-check */
815 if (!ov5642_find_datafmt(mf->code))
816 return -EINVAL;
817
818 ov5642_try_fmt(sd, mf);
819 priv->fmt = ov5642_find_datafmt(mf->code);
820
821 return 0;
822}
823
824static int ov5642_g_fmt(struct v4l2_subdev *sd,
825 struct v4l2_mbus_framefmt *mf)
826{
827 struct i2c_client *client = v4l2_get_subdevdata(sd);
828 struct ov5642 *priv = to_ov5642(client);
829
830 const struct ov5642_datafmt *fmt = priv->fmt;
831
832 mf->code = fmt->code;
833 mf->colorspace = fmt->colorspace;
834 mf->width = priv->crop_rect.width;
835 mf->height = priv->crop_rect.height;
836 mf->field = V4L2_FIELD_NONE;
837
838 return 0;
839}
840
841static int ov5642_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
842 enum v4l2_mbus_pixelcode *code)
843{
844 if (index >= ARRAY_SIZE(ov5642_colour_fmts))
845 return -EINVAL;
846
847 *code = ov5642_colour_fmts[index].code;
848 return 0;
849}
850
851static int ov5642_g_chip_ident(struct v4l2_subdev *sd,
852 struct v4l2_dbg_chip_ident *id)
853{
854 struct i2c_client *client = v4l2_get_subdevdata(sd);
855
856 if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
857 return -EINVAL;
858
859 if (id->match.addr != client->addr)
860 return -ENODEV;
861
862 id->ident = V4L2_IDENT_OV5642;
863 id->revision = 0;
864
865 return 0;
866}
867
868static int ov5642_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
869{
870 struct i2c_client *client = v4l2_get_subdevdata(sd);
871 struct ov5642 *priv = to_ov5642(client);
872 struct v4l2_rect *rect = &a->c;
873 int ret;
874
875 v4l_bound_align_image(&rect->width, 48, OV5642_MAX_WIDTH, 1,
876 &rect->height, 32, OV5642_MAX_HEIGHT, 1, 0);
877
878 priv->crop_rect.width = rect->width;
879 priv->crop_rect.height = rect->height;
880 priv->total_width = rect->width + BLANKING_EXTRA_WIDTH;
881 priv->total_height = max_t(int, rect->height +
882 BLANKING_EXTRA_HEIGHT,
883 BLANKING_MIN_HEIGHT);
884 priv->crop_rect.width = rect->width;
885 priv->crop_rect.height = rect->height;
886
887 ret = ov5642_write_array(client, ov5642_default_regs_init);
888 if (!ret)
889 ret = ov5642_set_resolution(sd);
890 if (!ret)
891 ret = ov5642_write_array(client, ov5642_default_regs_finalise);
892
893 return ret;
894}
895
896static int ov5642_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
897{
898 struct i2c_client *client = v4l2_get_subdevdata(sd);
899 struct ov5642 *priv = to_ov5642(client);
900 struct v4l2_rect *rect = &a->c;
901
902 if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
903 return -EINVAL;
904
905 *rect = priv->crop_rect;
906
907 return 0;
908}
909
910static int ov5642_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
911{
912 a->bounds.left = 0;
913 a->bounds.top = 0;
914 a->bounds.width = OV5642_MAX_WIDTH;
915 a->bounds.height = OV5642_MAX_HEIGHT;
916 a->defrect = a->bounds;
917 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
918 a->pixelaspect.numerator = 1;
919 a->pixelaspect.denominator = 1;
920
921 return 0;
922}
923
924static int ov5642_g_mbus_config(struct v4l2_subdev *sd,
925 struct v4l2_mbus_config *cfg)
926{
927 cfg->type = V4L2_MBUS_CSI2;
928 cfg->flags = V4L2_MBUS_CSI2_2_LANE | V4L2_MBUS_CSI2_CHANNEL_0 |
929 V4L2_MBUS_CSI2_CONTINUOUS_CLOCK;
930
931 return 0;
932}
933
934static int ov5642_s_power(struct v4l2_subdev *sd, int on)
935{
936 struct i2c_client *client;
937 int ret;
938
939 if (!on)
940 return 0;
941
942 client = v4l2_get_subdevdata(sd);
943 ret = ov5642_write_array(client, ov5642_default_regs_init);
944 if (!ret)
945 ret = ov5642_set_resolution(sd);
946 if (!ret)
947 ret = ov5642_write_array(client, ov5642_default_regs_finalise);
948
949 return ret;
950}
951
952static struct v4l2_subdev_video_ops ov5642_subdev_video_ops = {
953 .s_mbus_fmt = ov5642_s_fmt,
954 .g_mbus_fmt = ov5642_g_fmt,
955 .try_mbus_fmt = ov5642_try_fmt,
956 .enum_mbus_fmt = ov5642_enum_fmt,
957 .s_crop = ov5642_s_crop,
958 .g_crop = ov5642_g_crop,
959 .cropcap = ov5642_cropcap,
960 .g_mbus_config = ov5642_g_mbus_config,
961};
962
963static struct v4l2_subdev_core_ops ov5642_subdev_core_ops = {
964 .s_power = ov5642_s_power,
965 .g_chip_ident = ov5642_g_chip_ident,
966#ifdef CONFIG_VIDEO_ADV_DEBUG
967 .g_register = ov5642_get_register,
968 .s_register = ov5642_set_register,
969#endif
970};
971
972static struct v4l2_subdev_ops ov5642_subdev_ops = {
973 .core = &ov5642_subdev_core_ops,
974 .video = &ov5642_subdev_video_ops,
975};
976
977static int ov5642_video_probe(struct i2c_client *client)
978{
979 int ret;
980 u8 id_high, id_low;
981 u16 id;
982
983 /* Read sensor Model ID */
984 ret = reg_read(client, REG_CHIP_ID_HIGH, &id_high);
985 if (ret < 0)
986 return ret;
987
988 id = id_high << 8;
989
990 ret = reg_read(client, REG_CHIP_ID_LOW, &id_low);
991 if (ret < 0)
992 return ret;
993
994 id |= id_low;
995
996 dev_info(&client->dev, "Chip ID 0x%04x detected\n", id);
997
998 if (id != 0x5642)
999 return -ENODEV;
1000
1001 return 0;
1002}
1003
1004static int ov5642_probe(struct i2c_client *client,
1005 const struct i2c_device_id *did)
1006{
1007 struct ov5642 *priv;
1008 struct soc_camera_link *icl = soc_camera_i2c_to_link(client);
1009 int ret;
1010
1011 if (!icl) {
1012 dev_err(&client->dev, "OV5642: missing platform data!\n");
1013 return -EINVAL;
1014 }
1015
1016 priv = kzalloc(sizeof(struct ov5642), GFP_KERNEL);
1017 if (!priv)
1018 return -ENOMEM;
1019
1020 v4l2_i2c_subdev_init(&priv->subdev, client, &ov5642_subdev_ops);
1021
1022 priv->fmt = &ov5642_colour_fmts[0];
1023
1024 priv->crop_rect.width = OV5642_DEFAULT_WIDTH;
1025 priv->crop_rect.height = OV5642_DEFAULT_HEIGHT;
1026 priv->crop_rect.left = (OV5642_MAX_WIDTH - OV5642_DEFAULT_WIDTH) / 2;
1027 priv->crop_rect.top = (OV5642_MAX_HEIGHT - OV5642_DEFAULT_HEIGHT) / 2;
1028 priv->total_width = OV5642_DEFAULT_WIDTH + BLANKING_EXTRA_WIDTH;
1029 priv->total_height = BLANKING_MIN_HEIGHT;
1030
1031 ret = ov5642_video_probe(client);
1032 if (ret < 0)
1033 goto error;
1034
1035 return 0;
1036
1037error:
1038 kfree(priv);
1039 return ret;
1040}
1041
1042static int ov5642_remove(struct i2c_client *client)
1043{
1044 struct ov5642 *priv = to_ov5642(client);
1045 struct soc_camera_link *icl = soc_camera_i2c_to_link(client);
1046
1047 if (icl->free_bus)
1048 icl->free_bus(icl);
1049 kfree(priv);
1050
1051 return 0;
1052}
1053
1054static const struct i2c_device_id ov5642_id[] = {
1055 { "ov5642", 0 },
1056 { }
1057};
1058MODULE_DEVICE_TABLE(i2c, ov5642_id);
1059
1060static struct i2c_driver ov5642_i2c_driver = {
1061 .driver = {
1062 .name = "ov5642",
1063 },
1064 .probe = ov5642_probe,
1065 .remove = ov5642_remove,
1066 .id_table = ov5642_id,
1067};
1068
1069module_i2c_driver(ov5642_i2c_driver);
1070
1071MODULE_DESCRIPTION("Omnivision OV5642 Camera driver");
1072MODULE_AUTHOR("Bastian Hecht <hechtb@gmail.com>");
1073MODULE_LICENSE("GPL v2");
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-11 10:35:33 -0500