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Merge tag 'mailbox-v5.1' of git://git.linaro.org/landing-teams/working/fujitsu/integr...
[linux-2.6-block.git] / drivers / media / i2c / ov5645.c
CommitLineData
9cae9722
TT		 1/*
2 * Driver for the OV5645 camera sensor.
3 *
4 * Copyright (c) 2011-2015, The Linux Foundation. All rights reserved.
5 * Copyright (C) 2015 By Tech Design S.L. All Rights Reserved.
6 * Copyright (C) 2012-2013 Freescale Semiconductor, Inc. All Rights Reserved.
7 *
8 * Based on:
9 * - the OV5645 driver from QC msm-3.10 kernel on codeaurora.org:
10 * https://us.codeaurora.org/cgit/quic/la/kernel/msm-3.10/tree/drivers/
11 * media/platform/msm/camera_v2/sensor/ov5645.c?h=LA.BR.1.2.4_rb1.41
12 * - the OV5640 driver posted on linux-media:
13 * https://www.mail-archive.com/linux-media%40vger.kernel.org/msg92671.html
14 */
15
16/*
17 * This program is free software; you can redistribute it and/or modify
18 * it under the terms of the GNU General Public License as published by
19 * the Free Software Foundation; either version 2 of the License, or
20 * (at your option) any later version.
21
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
26 */
27
28#include <linux/bitops.h>
29#include <linux/clk.h>
30#include <linux/delay.h>
31#include <linux/device.h>
32#include <linux/gpio/consumer.h>
33#include <linux/i2c.h>
34#include <linux/init.h>
35#include <linux/module.h>
36#include <linux/of.h>
37#include <linux/of_graph.h>
38#include <linux/regulator/consumer.h>
39#include <linux/slab.h>
40#include <linux/types.h>
41#include <media/v4l2-ctrls.h>
859969b3 42#include <media/v4l2-fwnode.h>
9cae9722
TT		 43#include <media/v4l2-subdev.h>
44
45#define OV5645_VOLTAGE_ANALOG 2800000
46#define OV5645_VOLTAGE_DIGITAL_CORE 1500000
47#define OV5645_VOLTAGE_DIGITAL_IO 1800000
48
49#define OV5645_SYSTEM_CTRL0 0x3008
50#define OV5645_SYSTEM_CTRL0_START 0x02
51#define OV5645_SYSTEM_CTRL0_STOP 0x42
52#define OV5645_CHIP_ID_HIGH 0x300a
53#define OV5645_CHIP_ID_HIGH_BYTE 0x56
54#define OV5645_CHIP_ID_LOW 0x300b
55#define OV5645_CHIP_ID_LOW_BYTE 0x45
56#define OV5645_AWB_MANUAL_CONTROL 0x3406
57#define OV5645_AWB_MANUAL_ENABLE BIT(0)
58#define OV5645_AEC_PK_MANUAL 0x3503
59#define OV5645_AEC_MANUAL_ENABLE BIT(0)
60#define OV5645_AGC_MANUAL_ENABLE BIT(1)
61#define OV5645_TIMING_TC_REG20 0x3820
62#define OV5645_SENSOR_VFLIP BIT(1)
63#define OV5645_ISP_VFLIP BIT(2)
64#define OV5645_TIMING_TC_REG21 0x3821
65#define OV5645_SENSOR_MIRROR BIT(1)
66#define OV5645_PRE_ISP_TEST_SETTING_1 0x503d
67#define OV5645_TEST_PATTERN_MASK 0x3
68#define OV5645_SET_TEST_PATTERN(x) ((x) & OV5645_TEST_PATTERN_MASK)
69#define OV5645_TEST_PATTERN_ENABLE BIT(7)
70#define OV5645_SDE_SAT_U 0x5583
71#define OV5645_SDE_SAT_V 0x5584
72
73struct reg_value {
74 u16 reg;
75 u8 val;
76};
77
78struct ov5645_mode_info {
79 u32 width;
80 u32 height;
81 const struct reg_value *data;
82 u32 data_size;
1c2177fd 83 u32 pixel_clock;
e72e6cbe 84 u32 link_freq;
9cae9722
TT		 85};
86
87struct ov5645 {
88 struct i2c_client *i2c_client;
89 struct device *dev;
90 struct v4l2_subdev sd;
91 struct media_pad pad;
859969b3 92 struct v4l2_fwnode_endpoint ep;
9cae9722
TT		 93 struct v4l2_mbus_framefmt fmt;
94 struct v4l2_rect crop;
95 struct clk *xclk;
96
97 struct regulator *io_regulator;
98 struct regulator *core_regulator;
99 struct regulator *analog_regulator;
100
101 const struct ov5645_mode_info *current_mode;
102
103 struct v4l2_ctrl_handler ctrls;
1c2177fd 104 struct v4l2_ctrl *pixel_clock;
e72e6cbe 105 struct v4l2_ctrl *link_freq;
9cae9722
TT		 106
107 /* Cached register values */
108 u8 aec_pk_manual;
109 u8 timing_tc_reg20;
110 u8 timing_tc_reg21;
111
112 struct mutex power_lock; /* lock to protect power state */
113 int power_count;
114
115 struct gpio_desc *enable_gpio;
116 struct gpio_desc *rst_gpio;
117};
118
119static inline struct ov5645 *to_ov5645(struct v4l2_subdev *sd)
120{
121 return container_of(sd, struct ov5645, sd);
122}
123
124static const struct reg_value ov5645_global_init_setting[] = {
125 { 0x3103, 0x11 },
126 { 0x3008, 0x82 },
127 { 0x3008, 0x42 },
128 { 0x3103, 0x03 },
129 { 0x3503, 0x07 },
130 { 0x3002, 0x1c },
131 { 0x3006, 0xc3 },
132 { 0x300e, 0x45 },
133 { 0x3017, 0x00 },
134 { 0x3018, 0x00 },
135 { 0x302e, 0x0b },
136 { 0x3037, 0x13 },
137 { 0x3108, 0x01 },
138 { 0x3611, 0x06 },
139 { 0x3500, 0x00 },
140 { 0x3501, 0x01 },
141 { 0x3502, 0x00 },
142 { 0x350a, 0x00 },
143 { 0x350b, 0x3f },
144 { 0x3620, 0x33 },
145 { 0x3621, 0xe0 },
146 { 0x3622, 0x01 },
147 { 0x3630, 0x2e },
148 { 0x3631, 0x00 },
149 { 0x3632, 0x32 },
150 { 0x3633, 0x52 },
151 { 0x3634, 0x70 },
152 { 0x3635, 0x13 },
153 { 0x3636, 0x03 },
154 { 0x3703, 0x5a },
155 { 0x3704, 0xa0 },
156 { 0x3705, 0x1a },
157 { 0x3709, 0x12 },
158 { 0x370b, 0x61 },
159 { 0x370f, 0x10 },
160 { 0x3715, 0x78 },
161 { 0x3717, 0x01 },
162 { 0x371b, 0x20 },
163 { 0x3731, 0x12 },
164 { 0x3901, 0x0a },
165 { 0x3905, 0x02 },
166 { 0x3906, 0x10 },
167 { 0x3719, 0x86 },
168 { 0x3810, 0x00 },
169 { 0x3811, 0x10 },
170 { 0x3812, 0x00 },
171 { 0x3821, 0x01 },
172 { 0x3824, 0x01 },
173 { 0x3826, 0x03 },
174 { 0x3828, 0x08 },
175 { 0x3a19, 0xf8 },
176 { 0x3c01, 0x34 },
177 { 0x3c04, 0x28 },
178 { 0x3c05, 0x98 },
179 { 0x3c07, 0x07 },
180 { 0x3c09, 0xc2 },
181 { 0x3c0a, 0x9c },
182 { 0x3c0b, 0x40 },
183 { 0x3c01, 0x34 },
184 { 0x4001, 0x02 },
185 { 0x4514, 0x00 },
186 { 0x4520, 0xb0 },
187 { 0x460b, 0x37 },
188 { 0x460c, 0x20 },
189 { 0x4818, 0x01 },
190 { 0x481d, 0xf0 },
191 { 0x481f, 0x50 },
192 { 0x4823, 0x70 },
193 { 0x4831, 0x14 },
194 { 0x5000, 0xa7 },
195 { 0x5001, 0x83 },
196 { 0x501d, 0x00 },
197 { 0x501f, 0x00 },
198 { 0x503d, 0x00 },
199 { 0x505c, 0x30 },
200 { 0x5181, 0x59 },
201 { 0x5183, 0x00 },
202 { 0x5191, 0xf0 },
203 { 0x5192, 0x03 },
204 { 0x5684, 0x10 },
205 { 0x5685, 0xa0 },
206 { 0x5686, 0x0c },
207 { 0x5687, 0x78 },
208 { 0x5a00, 0x08 },
209 { 0x5a21, 0x00 },
210 { 0x5a24, 0x00 },
211 { 0x3008, 0x02 },
212 { 0x3503, 0x00 },
213 { 0x5180, 0xff },
214 { 0x5181, 0xf2 },
215 { 0x5182, 0x00 },
216 { 0x5183, 0x14 },
217 { 0x5184, 0x25 },
218 { 0x5185, 0x24 },
219 { 0x5186, 0x09 },
220 { 0x5187, 0x09 },
221 { 0x5188, 0x0a },
222 { 0x5189, 0x75 },
223 { 0x518a, 0x52 },
224 { 0x518b, 0xea },
225 { 0x518c, 0xa8 },
226 { 0x518d, 0x42 },
227 { 0x518e, 0x38 },
228 { 0x518f, 0x56 },
229 { 0x5190, 0x42 },
230 { 0x5191, 0xf8 },
231 { 0x5192, 0x04 },
232 { 0x5193, 0x70 },
233 { 0x5194, 0xf0 },
234 { 0x5195, 0xf0 },
235 { 0x5196, 0x03 },
236 { 0x5197, 0x01 },
237 { 0x5198, 0x04 },
238 { 0x5199, 0x12 },
239 { 0x519a, 0x04 },
240 { 0x519b, 0x00 },
241 { 0x519c, 0x06 },
242 { 0x519d, 0x82 },
243 { 0x519e, 0x38 },
244 { 0x5381, 0x1e },
245 { 0x5382, 0x5b },
246 { 0x5383, 0x08 },
247 { 0x5384, 0x0a },
248 { 0x5385, 0x7e },
249 { 0x5386, 0x88 },
250 { 0x5387, 0x7c },
251 { 0x5388, 0x6c },
252 { 0x5389, 0x10 },
253 { 0x538a, 0x01 },
254 { 0x538b, 0x98 },
255 { 0x5300, 0x08 },
256 { 0x5301, 0x30 },
257 { 0x5302, 0x10 },
258 { 0x5303, 0x00 },
259 { 0x5304, 0x08 },
260 { 0x5305, 0x30 },
261 { 0x5306, 0x08 },
262 { 0x5307, 0x16 },
263 { 0x5309, 0x08 },
264 { 0x530a, 0x30 },
265 { 0x530b, 0x04 },
266 { 0x530c, 0x06 },
267 { 0x5480, 0x01 },
268 { 0x5481, 0x08 },
269 { 0x5482, 0x14 },
270 { 0x5483, 0x28 },
271 { 0x5484, 0x51 },
272 { 0x5485, 0x65 },
273 { 0x5486, 0x71 },
274 { 0x5487, 0x7d },
275 { 0x5488, 0x87 },
276 { 0x5489, 0x91 },
277 { 0x548a, 0x9a },
278 { 0x548b, 0xaa },
279 { 0x548c, 0xb8 },
280 { 0x548d, 0xcd },
281 { 0x548e, 0xdd },
282 { 0x548f, 0xea },
283 { 0x5490, 0x1d },
284 { 0x5580, 0x02 },
285 { 0x5583, 0x40 },
286 { 0x5584, 0x10 },
287 { 0x5589, 0x10 },
288 { 0x558a, 0x00 },
289 { 0x558b, 0xf8 },
290 { 0x5800, 0x3f },
291 { 0x5801, 0x16 },
292 { 0x5802, 0x0e },
293 { 0x5803, 0x0d },
294 { 0x5804, 0x17 },
295 { 0x5805, 0x3f },
296 { 0x5806, 0x0b },
297 { 0x5807, 0x06 },
298 { 0x5808, 0x04 },
299 { 0x5809, 0x04 },
300 { 0x580a, 0x06 },
301 { 0x580b, 0x0b },
302 { 0x580c, 0x09 },
303 { 0x580d, 0x03 },
304 { 0x580e, 0x00 },
305 { 0x580f, 0x00 },
306 { 0x5810, 0x03 },
307 { 0x5811, 0x08 },
308 { 0x5812, 0x0a },
309 { 0x5813, 0x03 },
310 { 0x5814, 0x00 },
311 { 0x5815, 0x00 },
312 { 0x5816, 0x04 },
313 { 0x5817, 0x09 },
314 { 0x5818, 0x0f },
315 { 0x5819, 0x08 },
316 { 0x581a, 0x06 },
317 { 0x581b, 0x06 },
318 { 0x581c, 0x08 },
319 { 0x581d, 0x0c },
320 { 0x581e, 0x3f },
321 { 0x581f, 0x1e },
322 { 0x5820, 0x12 },
323 { 0x5821, 0x13 },
324 { 0x5822, 0x21 },
325 { 0x5823, 0x3f },
326 { 0x5824, 0x68 },
327 { 0x5825, 0x28 },
328 { 0x5826, 0x2c },
329 { 0x5827, 0x28 },
330 { 0x5828, 0x08 },
331 { 0x5829, 0x48 },
332 { 0x582a, 0x64 },
333 { 0x582b, 0x62 },
334 { 0x582c, 0x64 },
335 { 0x582d, 0x28 },
336 { 0x582e, 0x46 },
337 { 0x582f, 0x62 },
338 { 0x5830, 0x60 },
339 { 0x5831, 0x62 },
340 { 0x5832, 0x26 },
341 { 0x5833, 0x48 },
342 { 0x5834, 0x66 },
343 { 0x5835, 0x44 },
344 { 0x5836, 0x64 },
345 { 0x5837, 0x28 },
346 { 0x5838, 0x66 },
347 { 0x5839, 0x48 },
348 { 0x583a, 0x2c },
349 { 0x583b, 0x28 },
350 { 0x583c, 0x26 },
351 { 0x583d, 0xae },
352 { 0x5025, 0x00 },
353 { 0x3a0f, 0x30 },
354 { 0x3a10, 0x28 },
355 { 0x3a1b, 0x30 },
356 { 0x3a1e, 0x26 },
357 { 0x3a11, 0x60 },
358 { 0x3a1f, 0x14 },
359 { 0x0601, 0x02 },
360 { 0x3008, 0x42 },
361 { 0x3008, 0x02 }
362};
363
364static const struct reg_value ov5645_setting_sxga[] = {
365 { 0x3612, 0xa9 },
366 { 0x3614, 0x50 },
367 { 0x3618, 0x00 },
368 { 0x3034, 0x18 },
369 { 0x3035, 0x21 },
370 { 0x3036, 0x70 },
371 { 0x3600, 0x09 },
372 { 0x3601, 0x43 },
373 { 0x3708, 0x66 },
374 { 0x370c, 0xc3 },
375 { 0x3800, 0x00 },
376 { 0x3801, 0x00 },
377 { 0x3802, 0x00 },
378 { 0x3803, 0x06 },
379 { 0x3804, 0x0a },
380 { 0x3805, 0x3f },
381 { 0x3806, 0x07 },
382 { 0x3807, 0x9d },
383 { 0x3808, 0x05 },
384 { 0x3809, 0x00 },
385 { 0x380a, 0x03 },
386 { 0x380b, 0xc0 },
387 { 0x380c, 0x07 },
388 { 0x380d, 0x68 },
389 { 0x380e, 0x03 },
390 { 0x380f, 0xd8 },
391 { 0x3813, 0x06 },
392 { 0x3814, 0x31 },
393 { 0x3815, 0x31 },
394 { 0x3820, 0x47 },
395 { 0x3a02, 0x03 },
396 { 0x3a03, 0xd8 },
397 { 0x3a08, 0x01 },
398 { 0x3a09, 0xf8 },
399 { 0x3a0a, 0x01 },
400 { 0x3a0b, 0xa4 },
401 { 0x3a0e, 0x02 },
402 { 0x3a0d, 0x02 },
403 { 0x3a14, 0x03 },
404 { 0x3a15, 0xd8 },
405 { 0x3a18, 0x00 },
406 { 0x4004, 0x02 },
407 { 0x4005, 0x18 },
408 { 0x4300, 0x32 },
409 { 0x4202, 0x00 }
410};
411
412static const struct reg_value ov5645_setting_1080p[] = {
413 { 0x3612, 0xab },
414 { 0x3614, 0x50 },
415 { 0x3618, 0x04 },
416 { 0x3034, 0x18 },
417 { 0x3035, 0x11 },
418 { 0x3036, 0x54 },
419 { 0x3600, 0x08 },
420 { 0x3601, 0x33 },
421 { 0x3708, 0x63 },
422 { 0x370c, 0xc0 },
423 { 0x3800, 0x01 },
424 { 0x3801, 0x50 },
425 { 0x3802, 0x01 },
426 { 0x3803, 0xb2 },
427 { 0x3804, 0x08 },
428 { 0x3805, 0xef },
429 { 0x3806, 0x05 },
430 { 0x3807, 0xf1 },
431 { 0x3808, 0x07 },
432 { 0x3809, 0x80 },
433 { 0x380a, 0x04 },
434 { 0x380b, 0x38 },
435 { 0x380c, 0x09 },
436 { 0x380d, 0xc4 },
437 { 0x380e, 0x04 },
438 { 0x380f, 0x60 },
439 { 0x3813, 0x04 },
440 { 0x3814, 0x11 },
441 { 0x3815, 0x11 },
442 { 0x3820, 0x47 },
443 { 0x4514, 0x88 },
444 { 0x3a02, 0x04 },
445 { 0x3a03, 0x60 },
446 { 0x3a08, 0x01 },
447 { 0x3a09, 0x50 },
448 { 0x3a0a, 0x01 },
449 { 0x3a0b, 0x18 },
450 { 0x3a0e, 0x03 },
451 { 0x3a0d, 0x04 },
452 { 0x3a14, 0x04 },
453 { 0x3a15, 0x60 },
454 { 0x3a18, 0x00 },
455 { 0x4004, 0x06 },
456 { 0x4005, 0x18 },
457 { 0x4300, 0x32 },
458 { 0x4202, 0x00 },
459 { 0x4837, 0x0b }
460};
461
462static const struct reg_value ov5645_setting_full[] = {
463 { 0x3612, 0xab },
464 { 0x3614, 0x50 },
465 { 0x3618, 0x04 },
466 { 0x3034, 0x18 },
467 { 0x3035, 0x11 },
468 { 0x3036, 0x54 },
469 { 0x3600, 0x08 },
470 { 0x3601, 0x33 },
471 { 0x3708, 0x63 },
472 { 0x370c, 0xc0 },
473 { 0x3800, 0x00 },
474 { 0x3801, 0x00 },
475 { 0x3802, 0x00 },
476 { 0x3803, 0x00 },
477 { 0x3804, 0x0a },
478 { 0x3805, 0x3f },
479 { 0x3806, 0x07 },
480 { 0x3807, 0x9f },
481 { 0x3808, 0x0a },
482 { 0x3809, 0x20 },
483 { 0x380a, 0x07 },
484 { 0x380b, 0x98 },
485 { 0x380c, 0x0b },
486 { 0x380d, 0x1c },
487 { 0x380e, 0x07 },
488 { 0x380f, 0xb0 },
489 { 0x3813, 0x06 },
490 { 0x3814, 0x11 },
491 { 0x3815, 0x11 },
492 { 0x3820, 0x47 },
493 { 0x4514, 0x88 },
494 { 0x3a02, 0x07 },
495 { 0x3a03, 0xb0 },
496 { 0x3a08, 0x01 },
497 { 0x3a09, 0x27 },
498 { 0x3a0a, 0x00 },
499 { 0x3a0b, 0xf6 },
500 { 0x3a0e, 0x06 },
501 { 0x3a0d, 0x08 },
502 { 0x3a14, 0x07 },
503 { 0x3a15, 0xb0 },
504 { 0x3a18, 0x01 },
505 { 0x4004, 0x06 },
506 { 0x4005, 0x18 },
507 { 0x4300, 0x32 },
508 { 0x4837, 0x0b },
509 { 0x4202, 0x00 }
510};
511
e72e6cbe 512static const s64 link_freq[] = {
4adb0a04
TT		 513 224000000,
514 336000000
e72e6cbe
TT		 515};
516
9cae9722
TT		 517static const struct ov5645_mode_info ov5645_mode_info_data[] = {
518 {
519 .width = 1280,
520 .height = 960,
521 .data = ov5645_setting_sxga,
1c2177fd 522 .data_size = ARRAY_SIZE(ov5645_setting_sxga),
4adb0a04 523 .pixel_clock = 112000000,
e72e6cbe 524 .link_freq = 0 /* an index in link_freq[] */
9cae9722
TT		 525 },
526 {
527 .width = 1920,
528 .height = 1080,
529 .data = ov5645_setting_1080p,
1c2177fd 530 .data_size = ARRAY_SIZE(ov5645_setting_1080p),
4adb0a04 531 .pixel_clock = 168000000,
e72e6cbe 532 .link_freq = 1 /* an index in link_freq[] */
9cae9722
TT		 533 },
534 {
535 .width = 2592,
536 .height = 1944,
537 .data = ov5645_setting_full,
1c2177fd 538 .data_size = ARRAY_SIZE(ov5645_setting_full),
4adb0a04 539 .pixel_clock = 168000000,
e72e6cbe 540 .link_freq = 1 /* an index in link_freq[] */
9cae9722
TT		 541 },
542};
543
544static int ov5645_regulators_enable(struct ov5645 *ov5645)
545{
546 int ret;
547
548 ret = regulator_enable(ov5645->io_regulator);
549 if (ret < 0) {
550 dev_err(ov5645->dev, "set io voltage failed\n");
551 return ret;
552 }
553
554 ret = regulator_enable(ov5645->analog_regulator);
555 if (ret) {
556 dev_err(ov5645->dev, "set analog voltage failed\n");
557 goto err_disable_io;
558 }
559
560 ret = regulator_enable(ov5645->core_regulator);
561 if (ret) {
562 dev_err(ov5645->dev, "set core voltage failed\n");
563 goto err_disable_analog;
564 }
565
566 return 0;
567
568err_disable_analog:
569 regulator_disable(ov5645->analog_regulator);
570err_disable_io:
571 regulator_disable(ov5645->io_regulator);
572
573 return ret;
574}
575
576static void ov5645_regulators_disable(struct ov5645 *ov5645)
577{
578 int ret;
579
580 ret = regulator_disable(ov5645->core_regulator);
581 if (ret < 0)
582 dev_err(ov5645->dev, "core regulator disable failed\n");
583
584 ret = regulator_disable(ov5645->analog_regulator);
585 if (ret < 0)
586 dev_err(ov5645->dev, "analog regulator disable failed\n");
587
588 ret = regulator_disable(ov5645->io_regulator);
589 if (ret < 0)
590 dev_err(ov5645->dev, "io regulator disable failed\n");
591}
592
593static int ov5645_write_reg(struct ov5645 *ov5645, u16 reg, u8 val)
594{
595 u8 regbuf[3];
596 int ret;
597
598 regbuf[0] = reg >> 8;
599 regbuf[1] = reg & 0xff;
600 regbuf[2] = val;
601
602 ret = i2c_master_send(ov5645->i2c_client, regbuf, 3);
70648780 603 if (ret < 0) {
9cae9722
TT		 604 dev_err(ov5645->dev, "%s: write reg error %d: reg=%x, val=%x\n",
605 __func__, ret, reg, val);
70648780
TT		 606 return ret;
607 }
9cae9722 608
70648780 609 return 0;
9cae9722
TT		 610}
611
612static int ov5645_read_reg(struct ov5645 *ov5645, u16 reg, u8 *val)
613{
614 u8 regbuf[2];
615 int ret;
616
617 regbuf[0] = reg >> 8;
618 regbuf[1] = reg & 0xff;
619
620 ret = i2c_master_send(ov5645->i2c_client, regbuf, 2);
621 if (ret < 0) {
622 dev_err(ov5645->dev, "%s: write reg error %d: reg=%x\n",
623 __func__, ret, reg);
624 return ret;
625 }
626
627 ret = i2c_master_recv(ov5645->i2c_client, val, 1);
628 if (ret < 0) {
629 dev_err(ov5645->dev, "%s: read reg error %d: reg=%x\n",
630 __func__, ret, reg);
631 return ret;
632 }
633
634 return 0;
635}
636
637static int ov5645_set_aec_mode(struct ov5645 *ov5645, u32 mode)
638{
639 u8 val = ov5645->aec_pk_manual;
640 int ret;
641
642 if (mode == V4L2_EXPOSURE_AUTO)
643 val &= ~OV5645_AEC_MANUAL_ENABLE;
644 else /* V4L2_EXPOSURE_MANUAL */
645 val |= OV5645_AEC_MANUAL_ENABLE;
646
647 ret = ov5645_write_reg(ov5645, OV5645_AEC_PK_MANUAL, val);
648 if (!ret)
649 ov5645->aec_pk_manual = val;
650
651 return ret;
652}
653
654static int ov5645_set_agc_mode(struct ov5645 *ov5645, u32 enable)
655{
656 u8 val = ov5645->aec_pk_manual;
657 int ret;
658
659 if (enable)
660 val &= ~OV5645_AGC_MANUAL_ENABLE;
661 else
662 val |= OV5645_AGC_MANUAL_ENABLE;
663
664 ret = ov5645_write_reg(ov5645, OV5645_AEC_PK_MANUAL, val);
665 if (!ret)
666 ov5645->aec_pk_manual = val;
667
668 return ret;
669}
670
671static int ov5645_set_register_array(struct ov5645 *ov5645,
672 const struct reg_value *settings,
673 unsigned int num_settings)
674{
675 unsigned int i;
676 int ret;
677
678 for (i = 0; i < num_settings; ++i, ++settings) {
679 ret = ov5645_write_reg(ov5645, settings->reg, settings->val);
680 if (ret < 0)
681 return ret;
682 }
683
684 return 0;
685}
686
687static int ov5645_set_power_on(struct ov5645 *ov5645)
688{
689 int ret;
690
691 ret = ov5645_regulators_enable(ov5645);
692 if (ret < 0) {
693 return ret;
694 }
695
696 ret = clk_prepare_enable(ov5645->xclk);
697 if (ret < 0) {
698 dev_err(ov5645->dev, "clk prepare enable failed\n");
699 ov5645_regulators_disable(ov5645);
700 return ret;
701 }
702
703 usleep_range(5000, 15000);
704 gpiod_set_value_cansleep(ov5645->enable_gpio, 1);
705
706 usleep_range(1000, 2000);
707 gpiod_set_value_cansleep(ov5645->rst_gpio, 0);
708
709 msleep(20);
710
711 return 0;
712}
713
714static void ov5645_set_power_off(struct ov5645 *ov5645)
715{
716 gpiod_set_value_cansleep(ov5645->rst_gpio, 1);
717 gpiod_set_value_cansleep(ov5645->enable_gpio, 0);
718 clk_disable_unprepare(ov5645->xclk);
719 ov5645_regulators_disable(ov5645);
720}
721
722static int ov5645_s_power(struct v4l2_subdev *sd, int on)
723{
724 struct ov5645 *ov5645 = to_ov5645(sd);
725 int ret = 0;
726
727 mutex_lock(&ov5645->power_lock);
728
729 /* If the power count is modified from 0 to != 0 or from != 0 to 0,
730 * update the power state.
731 */
732 if (ov5645->power_count == !on) {
733 if (on) {
734 ret = ov5645_set_power_on(ov5645);
735 if (ret < 0)
736 goto exit;
737
738 ret = ov5645_set_register_array(ov5645,
739 ov5645_global_init_setting,
740 ARRAY_SIZE(ov5645_global_init_setting));
741 if (ret < 0) {
742 dev_err(ov5645->dev,
743 "could not set init registers\n");
744 ov5645_set_power_off(ov5645);
745 goto exit;
746 }
747
748 ret = ov5645_write_reg(ov5645, OV5645_SYSTEM_CTRL0,
749 OV5645_SYSTEM_CTRL0_STOP);
750 if (ret < 0) {
751 ov5645_set_power_off(ov5645);
752 goto exit;
753 }
754 } else {
755 ov5645_set_power_off(ov5645);
756 }
757 }
758
759 /* Update the power count. */
760 ov5645->power_count += on ? 1 : -1;
761 WARN_ON(ov5645->power_count < 0);
762
763exit:
764 mutex_unlock(&ov5645->power_lock);
765
766 return ret;
767}
768
769static int ov5645_set_saturation(struct ov5645 *ov5645, s32 value)
770{
771 u32 reg_value = (value * 0x10) + 0x40;
772 int ret;
773
774 ret = ov5645_write_reg(ov5645, OV5645_SDE_SAT_U, reg_value);
775 if (ret < 0)
776 return ret;
777
778 return ov5645_write_reg(ov5645, OV5645_SDE_SAT_V, reg_value);
779}
780
781static int ov5645_set_hflip(struct ov5645 *ov5645, s32 value)
782{
783 u8 val = ov5645->timing_tc_reg21;
784 int ret;
785
786 if (value == 0)
787 val &= ~(OV5645_SENSOR_MIRROR);
788 else
789 val |= (OV5645_SENSOR_MIRROR);
790
791 ret = ov5645_write_reg(ov5645, OV5645_TIMING_TC_REG21, val);
792 if (!ret)
793 ov5645->timing_tc_reg21 = val;
794
795 return ret;
796}
797
798static int ov5645_set_vflip(struct ov5645 *ov5645, s32 value)
799{
800 u8 val = ov5645->timing_tc_reg20;
801 int ret;
802
803 if (value == 0)
804 val |= (OV5645_SENSOR_VFLIP | OV5645_ISP_VFLIP);
805 else
806 val &= ~(OV5645_SENSOR_VFLIP | OV5645_ISP_VFLIP);
807
808 ret = ov5645_write_reg(ov5645, OV5645_TIMING_TC_REG20, val);
809 if (!ret)
810 ov5645->timing_tc_reg20 = val;
811
812 return ret;
813}
814
815static int ov5645_set_test_pattern(struct ov5645 *ov5645, s32 value)
816{
817 u8 val = 0;
818
819 if (value) {
820 val = OV5645_SET_TEST_PATTERN(value - 1);
821 val |= OV5645_TEST_PATTERN_ENABLE;
822 }
823
824 return ov5645_write_reg(ov5645, OV5645_PRE_ISP_TEST_SETTING_1, val);
825}
826
827static const char * const ov5645_test_pattern_menu[] = {
828 "Disabled",
829 "Vertical Color Bars",
830 "Pseudo-Random Data",
831 "Color Square",
832 "Black Image",
833};
834
835static int ov5645_set_awb(struct ov5645 *ov5645, s32 enable_auto)
836{
837 u8 val = 0;
838
839 if (!enable_auto)
840 val = OV5645_AWB_MANUAL_ENABLE;
841
842 return ov5645_write_reg(ov5645, OV5645_AWB_MANUAL_CONTROL, val);
843}
844
845static int ov5645_s_ctrl(struct v4l2_ctrl *ctrl)
846{
847 struct ov5645 *ov5645 = container_of(ctrl->handler,
848 struct ov5645, ctrls);
849 int ret;
850
851 mutex_lock(&ov5645->power_lock);
852 if (!ov5645->power_count) {
853 mutex_unlock(&ov5645->power_lock);
854 return 0;
855 }
856
857 switch (ctrl->id) {
858 case V4L2_CID_SATURATION:
859 ret = ov5645_set_saturation(ov5645, ctrl->val);
860 break;
861 case V4L2_CID_AUTO_WHITE_BALANCE:
862 ret = ov5645_set_awb(ov5645, ctrl->val);
863 break;
864 case V4L2_CID_AUTOGAIN:
865 ret = ov5645_set_agc_mode(ov5645, ctrl->val);
866 break;
867 case V4L2_CID_EXPOSURE_AUTO:
868 ret = ov5645_set_aec_mode(ov5645, ctrl->val);
869 break;
870 case V4L2_CID_TEST_PATTERN:
871 ret = ov5645_set_test_pattern(ov5645, ctrl->val);
872 break;
873 case V4L2_CID_HFLIP:
874 ret = ov5645_set_hflip(ov5645, ctrl->val);
875 break;
876 case V4L2_CID_VFLIP:
877 ret = ov5645_set_vflip(ov5645, ctrl->val);
878 break;
879 default:
880 ret = -EINVAL;
881 break;
882 }
883
884 mutex_unlock(&ov5645->power_lock);
885
886 return ret;
887}
888
d148b85e 889static const struct v4l2_ctrl_ops ov5645_ctrl_ops = {
9cae9722
TT		 890 .s_ctrl = ov5645_s_ctrl,
891};
892
893static int ov5645_enum_mbus_code(struct v4l2_subdev *sd,
894 struct v4l2_subdev_pad_config *cfg,
895 struct v4l2_subdev_mbus_code_enum *code)
896{
897 if (code->index > 0)
898 return -EINVAL;
899
900 code->code = MEDIA_BUS_FMT_UYVY8_2X8;
901
902 return 0;
903}
904
905static int ov5645_enum_frame_size(struct v4l2_subdev *subdev,
906 struct v4l2_subdev_pad_config *cfg,
907 struct v4l2_subdev_frame_size_enum *fse)
908{
909 if (fse->code != MEDIA_BUS_FMT_UYVY8_2X8)
910 return -EINVAL;
911
912 if (fse->index >= ARRAY_SIZE(ov5645_mode_info_data))
913 return -EINVAL;
914
915 fse->min_width = ov5645_mode_info_data[fse->index].width;
916 fse->max_width = ov5645_mode_info_data[fse->index].width;
917 fse->min_height = ov5645_mode_info_data[fse->index].height;
918 fse->max_height = ov5645_mode_info_data[fse->index].height;
919
920 return 0;
921}
922
923static struct v4l2_mbus_framefmt *
924__ov5645_get_pad_format(struct ov5645 *ov5645,
925 struct v4l2_subdev_pad_config *cfg,
926 unsigned int pad,
927 enum v4l2_subdev_format_whence which)
928{
929 switch (which) {
930 case V4L2_SUBDEV_FORMAT_TRY:
931 return v4l2_subdev_get_try_format(&ov5645->sd, cfg, pad);
932 case V4L2_SUBDEV_FORMAT_ACTIVE:
933 return &ov5645->fmt;
934 default:
935 return NULL;
936 }
937}
938
939static int ov5645_get_format(struct v4l2_subdev *sd,
940 struct v4l2_subdev_pad_config *cfg,
941 struct v4l2_subdev_format *format)
942{
943 struct ov5645 *ov5645 = to_ov5645(sd);
944
945 format->format = *__ov5645_get_pad_format(ov5645, cfg, format->pad,
946 format->which);
947 return 0;
948}
949
950static struct v4l2_rect *
951__ov5645_get_pad_crop(struct ov5645 *ov5645, struct v4l2_subdev_pad_config *cfg,
952 unsigned int pad, enum v4l2_subdev_format_whence which)
953{
954 switch (which) {
955 case V4L2_SUBDEV_FORMAT_TRY:
956 return v4l2_subdev_get_try_crop(&ov5645->sd, cfg, pad);
957 case V4L2_SUBDEV_FORMAT_ACTIVE:
958 return &ov5645->crop;
959 default:
960 return NULL;
961 }
962}
963
9cae9722
TT		 964static int ov5645_set_format(struct v4l2_subdev *sd,
965 struct v4l2_subdev_pad_config *cfg,
966 struct v4l2_subdev_format *format)
967{
968 struct ov5645 *ov5645 = to_ov5645(sd);
969 struct v4l2_mbus_framefmt *__format;
970 struct v4l2_rect *__crop;
971 const struct ov5645_mode_info *new_mode;
1c2177fd 972 int ret;
9cae9722
TT		 973
974 __crop = __ov5645_get_pad_crop(ov5645, cfg, format->pad,
975 format->which);
976
5b81c53c
TT		 977 new_mode = v4l2_find_nearest_size(ov5645_mode_info_data,
978 ARRAY_SIZE(ov5645_mode_info_data),
979 width, height,
980 format->format.width, format->format.height);
981
9cae9722
TT		 982 __crop->width = new_mode->width;
983 __crop->height = new_mode->height;
984
1c2177fd
TT		 985 if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
986 ret = v4l2_ctrl_s_ctrl_int64(ov5645->pixel_clock,
987 new_mode->pixel_clock);
988 if (ret < 0)
989 return ret;
990
e72e6cbe
TT		 991 ret = v4l2_ctrl_s_ctrl(ov5645->link_freq,
992 new_mode->link_freq);
993 if (ret < 0)
994 return ret;
995
9cae9722 996 ov5645->current_mode = new_mode;
1c2177fd 997 }
9cae9722
TT		 998
999 __format = __ov5645_get_pad_format(ov5645, cfg, format->pad,
1000 format->which);
1001 __format->width = __crop->width;
1002 __format->height = __crop->height;
1003 __format->code = MEDIA_BUS_FMT_UYVY8_2X8;
1004 __format->field = V4L2_FIELD_NONE;
1005 __format->colorspace = V4L2_COLORSPACE_SRGB;
1006
1007 format->format = *__format;
1008
1009 return 0;
1010}
1011
1012static int ov5645_entity_init_cfg(struct v4l2_subdev *subdev,
1013 struct v4l2_subdev_pad_config *cfg)
1014{
1015 struct v4l2_subdev_format fmt = { 0 };
1016
1017 fmt.which = cfg ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
1018 fmt.format.width = 1920;
1019 fmt.format.height = 1080;
1020
1021 ov5645_set_format(subdev, cfg, &fmt);
1022
1023 return 0;
1024}
1025
1026static int ov5645_get_selection(struct v4l2_subdev *sd,
1027 struct v4l2_subdev_pad_config *cfg,
1028 struct v4l2_subdev_selection *sel)
1029{
1030 struct ov5645 *ov5645 = to_ov5645(sd);
1031
1032 if (sel->target != V4L2_SEL_TGT_CROP)
1033 return -EINVAL;
1034
1035 sel->r = *__ov5645_get_pad_crop(ov5645, cfg, sel->pad,
1036 sel->which);
1037 return 0;
1038}
1039
1040static int ov5645_s_stream(struct v4l2_subdev *subdev, int enable)
1041{
1042 struct ov5645 *ov5645 = to_ov5645(subdev);
1043 int ret;
1044
1045 if (enable) {
1046 ret = ov5645_set_register_array(ov5645,
1047 ov5645->current_mode->data,
1048 ov5645->current_mode->data_size);
1049 if (ret < 0) {
1050 dev_err(ov5645->dev, "could not set mode %dx%d\n",
1051 ov5645->current_mode->width,
1052 ov5645->current_mode->height);
1053 return ret;
1054 }
1055 ret = v4l2_ctrl_handler_setup(&ov5645->ctrls);
1056 if (ret < 0) {
1057 dev_err(ov5645->dev, "could not sync v4l2 controls\n");
1058 return ret;
1059 }
1060 ret = ov5645_write_reg(ov5645, OV5645_SYSTEM_CTRL0,
1061 OV5645_SYSTEM_CTRL0_START);
1062 if (ret < 0)
1063 return ret;
1064 } else {
1065 ret = ov5645_write_reg(ov5645, OV5645_SYSTEM_CTRL0,
1066 OV5645_SYSTEM_CTRL0_STOP);
1067 if (ret < 0)
1068 return ret;
1069 }
1070
1071 return 0;
1072}
1073
1074static const struct v4l2_subdev_core_ops ov5645_core_ops = {
1075 .s_power = ov5645_s_power,
1076};
1077
1078static const struct v4l2_subdev_video_ops ov5645_video_ops = {
1079 .s_stream = ov5645_s_stream,
1080};
1081
1082static const struct v4l2_subdev_pad_ops ov5645_subdev_pad_ops = {
1083 .init_cfg = ov5645_entity_init_cfg,
1084 .enum_mbus_code = ov5645_enum_mbus_code,
1085 .enum_frame_size = ov5645_enum_frame_size,
1086 .get_fmt = ov5645_get_format,
1087 .set_fmt = ov5645_set_format,
1088 .get_selection = ov5645_get_selection,
1089};
1090
1091static const struct v4l2_subdev_ops ov5645_subdev_ops = {
1092 .core = &ov5645_core_ops,
1093 .video = &ov5645_video_ops,
1094 .pad = &ov5645_subdev_pad_ops,
1095};
1096
1097static int ov5645_probe(struct i2c_client *client,
1098 const struct i2c_device_id *id)
1099{
1100 struct device *dev = &client->dev;
1101 struct device_node *endpoint;
1102 struct ov5645 *ov5645;
1103 u8 chip_id_high, chip_id_low;
1104 u32 xclk_freq;
1105 int ret;
1106
1107 ov5645 = devm_kzalloc(dev, sizeof(struct ov5645), GFP_KERNEL);
1108 if (!ov5645)
1109 return -ENOMEM;
1110
1111 ov5645->i2c_client = client;
1112 ov5645->dev = dev;
1113
1114 endpoint = of_graph_get_next_endpoint(dev->of_node, NULL);
1115 if (!endpoint) {
1116 dev_err(dev, "endpoint node not found\n");
1117 return -EINVAL;
1118 }
1119
859969b3
SA		 1120 ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint),
1121 &ov5645->ep);
06fe9323
AM		 1122
1123 of_node_put(endpoint);
1124
9cae9722
TT		 1125 if (ret < 0) {
1126 dev_err(dev, "parsing endpoint node failed\n");
1127 return ret;
1128 }
1129
2d95e7ed 1130 if (ov5645->ep.bus_type != V4L2_MBUS_CSI2_DPHY) {
9cae9722
TT		 1131 dev_err(dev, "invalid bus type, must be CSI2\n");
1132 return -EINVAL;
1133 }
1134
1135 /* get system clock (xclk) */
1136 ov5645->xclk = devm_clk_get(dev, "xclk");
1137 if (IS_ERR(ov5645->xclk)) {
1138 dev_err(dev, "could not get xclk");
1139 return PTR_ERR(ov5645->xclk);
1140 }
1141
1142 ret = of_property_read_u32(dev->of_node, "clock-frequency", &xclk_freq);
1143 if (ret) {
1144 dev_err(dev, "could not get xclk frequency\n");
1145 return ret;
1146 }
1147
4adb0a04
TT		 1148 /* external clock must be 24MHz, allow 1% tolerance */
1149 if (xclk_freq < 23760000 || xclk_freq > 24240000) {
9cae9722
TT		 1150 dev_err(dev, "external clock frequency %u is not supported\n",
1151 xclk_freq);
1152 return -EINVAL;
1153 }
1154
1155 ret = clk_set_rate(ov5645->xclk, xclk_freq);
1156 if (ret) {
1157 dev_err(dev, "could not set xclk frequency\n");
1158 return ret;
1159 }
1160
1161 ov5645->io_regulator = devm_regulator_get(dev, "vdddo");
1162 if (IS_ERR(ov5645->io_regulator)) {
1163 dev_err(dev, "cannot get io regulator\n");
1164 return PTR_ERR(ov5645->io_regulator);
1165 }
1166
1167 ret = regulator_set_voltage(ov5645->io_regulator,
1168 OV5645_VOLTAGE_DIGITAL_IO,
1169 OV5645_VOLTAGE_DIGITAL_IO);
1170 if (ret < 0) {
1171 dev_err(dev, "cannot set io voltage\n");
1172 return ret;
1173 }
1174
1175 ov5645->core_regulator = devm_regulator_get(dev, "vddd");
1176 if (IS_ERR(ov5645->core_regulator)) {
1177 dev_err(dev, "cannot get core regulator\n");
1178 return PTR_ERR(ov5645->core_regulator);
1179 }
1180
1181 ret = regulator_set_voltage(ov5645->core_regulator,
1182 OV5645_VOLTAGE_DIGITAL_CORE,
1183 OV5645_VOLTAGE_DIGITAL_CORE);
1184 if (ret < 0) {
1185 dev_err(dev, "cannot set core voltage\n");
1186 return ret;
1187 }
1188
1189 ov5645->analog_regulator = devm_regulator_get(dev, "vdda");
1190 if (IS_ERR(ov5645->analog_regulator)) {
1191 dev_err(dev, "cannot get analog regulator\n");
1192 return PTR_ERR(ov5645->analog_regulator);
1193 }
1194
1195 ret = regulator_set_voltage(ov5645->analog_regulator,
1196 OV5645_VOLTAGE_ANALOG,
1197 OV5645_VOLTAGE_ANALOG);
1198 if (ret < 0) {
1199 dev_err(dev, "cannot set analog voltage\n");
1200 return ret;
1201 }
1202
1203 ov5645->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_HIGH);
1204 if (IS_ERR(ov5645->enable_gpio)) {
1205 dev_err(dev, "cannot get enable gpio\n");
1206 return PTR_ERR(ov5645->enable_gpio);
1207 }
1208
1209 ov5645->rst_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
1210 if (IS_ERR(ov5645->rst_gpio)) {
1211 dev_err(dev, "cannot get reset gpio\n");
1212 return PTR_ERR(ov5645->rst_gpio);
1213 }
1214
1215 mutex_init(&ov5645->power_lock);
1216
e72e6cbe 1217 v4l2_ctrl_handler_init(&ov5645->ctrls, 9);
9cae9722
TT		 1218 v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops,
1219 V4L2_CID_SATURATION, -4, 4, 1, 0);
1220 v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops,
1221 V4L2_CID_HFLIP, 0, 1, 1, 0);
1222 v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops,
1223 V4L2_CID_VFLIP, 0, 1, 1, 0);
1224 v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops,
1225 V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
1226 v4l2_ctrl_new_std(&ov5645->ctrls, &ov5645_ctrl_ops,
1227 V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
1228 v4l2_ctrl_new_std_menu(&ov5645->ctrls, &ov5645_ctrl_ops,
1229 V4L2_CID_EXPOSURE_AUTO, V4L2_EXPOSURE_MANUAL,
1230 0, V4L2_EXPOSURE_AUTO);
1231 v4l2_ctrl_new_std_menu_items(&ov5645->ctrls, &ov5645_ctrl_ops,
1232 V4L2_CID_TEST_PATTERN,
1233 ARRAY_SIZE(ov5645_test_pattern_menu) - 1,
1234 0, 0, ov5645_test_pattern_menu);
1c2177fd
TT		 1235 ov5645->pixel_clock = v4l2_ctrl_new_std(&ov5645->ctrls,
1236 &ov5645_ctrl_ops,
1237 V4L2_CID_PIXEL_RATE,
1238 1, INT_MAX, 1, 1);
e72e6cbe
TT		 1239 ov5645->link_freq = v4l2_ctrl_new_int_menu(&ov5645->ctrls,
1240 &ov5645_ctrl_ops,
1241 V4L2_CID_LINK_FREQ,
1242 ARRAY_SIZE(link_freq) - 1,
1243 0, link_freq);
1244 if (ov5645->link_freq)
1245 ov5645->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
9cae9722
TT		 1246
1247 ov5645->sd.ctrl_handler = &ov5645->ctrls;
1248
1249 if (ov5645->ctrls.error) {
1250 dev_err(dev, "%s: control initialization error %d\n",
1251 __func__, ov5645->ctrls.error);
1252 ret = ov5645->ctrls.error;
1253 goto free_ctrl;
1254 }
1255
1256 v4l2_i2c_subdev_init(&ov5645->sd, client, &ov5645_subdev_ops);
1257 ov5645->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1258 ov5645->pad.flags = MEDIA_PAD_FL_SOURCE;
1259 ov5645->sd.dev = &client->dev;
f7b51859 1260 ov5645->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
9cae9722
TT		 1261
1262 ret = media_entity_pads_init(&ov5645->sd.entity, 1, &ov5645->pad);
1263 if (ret < 0) {
1264 dev_err(dev, "could not register media entity\n");
1265 goto free_ctrl;
1266 }
1267
1268 ret = ov5645_s_power(&ov5645->sd, true);
1269 if (ret < 0) {
1270 dev_err(dev, "could not power up OV5645\n");
1271 goto free_entity;
1272 }
1273
1274 ret = ov5645_read_reg(ov5645, OV5645_CHIP_ID_HIGH, &chip_id_high);
1275 if (ret < 0 || chip_id_high != OV5645_CHIP_ID_HIGH_BYTE) {
1276 dev_err(dev, "could not read ID high\n");
1277 ret = -ENODEV;
1278 goto power_down;
1279 }
1280 ret = ov5645_read_reg(ov5645, OV5645_CHIP_ID_LOW, &chip_id_low);
1281 if (ret < 0 || chip_id_low != OV5645_CHIP_ID_LOW_BYTE) {
1282 dev_err(dev, "could not read ID low\n");
1283 ret = -ENODEV;
1284 goto power_down;
1285 }
1286
1287 dev_info(dev, "OV5645 detected at address 0x%02x\n", client->addr);
1288
1289 ret = ov5645_read_reg(ov5645, OV5645_AEC_PK_MANUAL,
1290 &ov5645->aec_pk_manual);
1291 if (ret < 0) {
1292 dev_err(dev, "could not read AEC/AGC mode\n");
1293 ret = -ENODEV;
1294 goto power_down;
1295 }
1296
1297 ret = ov5645_read_reg(ov5645, OV5645_TIMING_TC_REG20,
1298 &ov5645->timing_tc_reg20);
1299 if (ret < 0) {
1300 dev_err(dev, "could not read vflip value\n");
1301 ret = -ENODEV;
1302 goto power_down;
1303 }
1304
1305 ret = ov5645_read_reg(ov5645, OV5645_TIMING_TC_REG21,
1306 &ov5645->timing_tc_reg21);
1307 if (ret < 0) {
1308 dev_err(dev, "could not read hflip value\n");
1309 ret = -ENODEV;
1310 goto power_down;
1311 }
1312
1313 ov5645_s_power(&ov5645->sd, false);
1314
1315 ret = v4l2_async_register_subdev(&ov5645->sd);
1316 if (ret < 0) {
1317 dev_err(dev, "could not register v4l2 device\n");
1318 goto free_entity;
1319 }
1320
1321 ov5645_entity_init_cfg(&ov5645->sd, NULL);
1322
1323 return 0;
1324
1325power_down:
1326 ov5645_s_power(&ov5645->sd, false);
1327free_entity:
1328 media_entity_cleanup(&ov5645->sd.entity);
1329free_ctrl:
1330 v4l2_ctrl_handler_free(&ov5645->ctrls);
1331 mutex_destroy(&ov5645->power_lock);
1332
1333 return ret;
1334}
1335
1336static int ov5645_remove(struct i2c_client *client)
1337{
1338 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1339 struct ov5645 *ov5645 = to_ov5645(sd);
1340
1341 v4l2_async_unregister_subdev(&ov5645->sd);
1342 media_entity_cleanup(&ov5645->sd.entity);
1343 v4l2_ctrl_handler_free(&ov5645->ctrls);
1344 mutex_destroy(&ov5645->power_lock);
1345
1346 return 0;
1347}
1348
1349static const struct i2c_device_id ov5645_id[] = {
1350 { "ov5645", 0 },
1351 {}
1352};
1353MODULE_DEVICE_TABLE(i2c, ov5645_id);
1354
1355static const struct of_device_id ov5645_of_match[] = {
1356 { .compatible = "ovti,ov5645" },
1357 { /* sentinel */ }
1358};
1359MODULE_DEVICE_TABLE(of, ov5645_of_match);
1360
1361static struct i2c_driver ov5645_i2c_driver = {
1362 .driver = {
1363 .of_match_table = of_match_ptr(ov5645_of_match),
1364 .name = "ov5645",
1365 },
1366 .probe = ov5645_probe,
1367 .remove = ov5645_remove,
1368 .id_table = ov5645_id,
1369};
1370
1371module_i2c_driver(ov5645_i2c_driver);
1372
1373MODULE_DESCRIPTION("Omnivision OV5645 Camera Driver");
1374MODULE_AUTHOR("Todor Tomov <todor.tomov@linaro.org>");
1375MODULE_LICENSE("GPL v2");
Linux 6.x block layer and io_uring tree(s)