?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Merge tag 'trace-printf-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace...
[drm/drm-misc.git] / drivers / media / i2c / ov2680.c
blob7237fb27ecd00ef782bcd39ed522d5167eb4f23c
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Omnivision OV2680 CMOS Image Sensor driver
4 *
5 * Copyright (C) 2018 Linaro Ltd
6 *
7 * Based on OV5640 Sensor Driver
8 * Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved.
9 * Copyright (C) 2014-2017 Mentor Graphics Inc.
10 *
11 */
12
13 #include <linux/clk.h>
14 #include <linux/delay.h>
15 #include <linux/err.h>
16 #include <linux/gpio/consumer.h>
17 #include <linux/i2c.h>
18 #include <linux/init.h>
19 #include <linux/mod_devicetable.h>
20 #include <linux/module.h>
21 #include <linux/pm_runtime.h>
22 #include <linux/regmap.h>
23 #include <linux/regulator/consumer.h>
24
25 #include <media/v4l2-cci.h>
26 #include <media/v4l2-common.h>
27 #include <media/v4l2-ctrls.h>
28 #include <media/v4l2-fwnode.h>
29 #include <media/v4l2-subdev.h>
30
31 #define OV2680_CHIP_ID 0x2680
32
33 #define OV2680_REG_STREAM_CTRL CCI_REG8(0x0100)
34 #define OV2680_REG_SOFT_RESET CCI_REG8(0x0103)
35
36 #define OV2680_REG_CHIP_ID CCI_REG16(0x300a)
37 #define OV2680_REG_SC_CMMN_SUB_ID CCI_REG8(0x302a)
38 #define OV2680_REG_PLL_MULTIPLIER CCI_REG16(0x3081)
39
40 #define OV2680_REG_EXPOSURE_PK CCI_REG24(0x3500)
41 #define OV2680_REG_R_MANUAL CCI_REG8(0x3503)
42 #define OV2680_REG_GAIN_PK CCI_REG16(0x350a)
43
44 #define OV2680_REG_SENSOR_CTRL_0A CCI_REG8(0x370a)
45
46 #define OV2680_REG_HORIZONTAL_START CCI_REG16(0x3800)
47 #define OV2680_REG_VERTICAL_START CCI_REG16(0x3802)
48 #define OV2680_REG_HORIZONTAL_END CCI_REG16(0x3804)
49 #define OV2680_REG_VERTICAL_END CCI_REG16(0x3806)
50 #define OV2680_REG_HORIZONTAL_OUTPUT_SIZE CCI_REG16(0x3808)
51 #define OV2680_REG_VERTICAL_OUTPUT_SIZE CCI_REG16(0x380a)
52 #define OV2680_REG_TIMING_HTS CCI_REG16(0x380c)
53 #define OV2680_REG_TIMING_VTS CCI_REG16(0x380e)
54 #define OV2680_REG_ISP_X_WIN CCI_REG16(0x3810)
55 #define OV2680_REG_ISP_Y_WIN CCI_REG16(0x3812)
56 #define OV2680_REG_X_INC CCI_REG8(0x3814)
57 #define OV2680_REG_Y_INC CCI_REG8(0x3815)
58 #define OV2680_REG_FORMAT1 CCI_REG8(0x3820)
59 #define OV2680_REG_FORMAT2 CCI_REG8(0x3821)
60
61 #define OV2680_REG_ISP_CTRL00 CCI_REG8(0x5080)
62
63 #define OV2680_REG_X_WIN CCI_REG16(0x5704)
64 #define OV2680_REG_Y_WIN CCI_REG16(0x5706)
65
66 #define OV2680_FRAME_RATE 30
67
68 #define OV2680_NATIVE_WIDTH 1616
69 #define OV2680_NATIVE_HEIGHT 1216
70 #define OV2680_NATIVE_START_LEFT 0
71 #define OV2680_NATIVE_START_TOP 0
72 #define OV2680_ACTIVE_WIDTH 1600
73 #define OV2680_ACTIVE_HEIGHT 1200
74 #define OV2680_ACTIVE_START_LEFT 8
75 #define OV2680_ACTIVE_START_TOP 8
76 #define OV2680_MIN_CROP_WIDTH 2
77 #define OV2680_MIN_CROP_HEIGHT 2
78 #define OV2680_MIN_VBLANK 4
79 #define OV2680_MAX_VBLANK 0xffff
80
81 /* Fixed pre-div of 1/2 */
82 #define OV2680_PLL_PREDIV0 2
83
84 /* Pre-div configurable through reg 0x3080, left at its default of 0x02 : 1/2 */
85 #define OV2680_PLL_PREDIV 2
86
87 /* 66MHz pixel clock: 66MHz / 1704 * 1294 = 30fps */
88 #define OV2680_PIXELS_PER_LINE 1704
89 #define OV2680_LINES_PER_FRAME_30FPS 1294
90
91 /* Max exposure time is VTS - 8 */
92 #define OV2680_INTEGRATION_TIME_MARGIN 8
93
94 #define OV2680_DEFAULT_WIDTH 800
95 #define OV2680_DEFAULT_HEIGHT 600
96
97 /* For enum_frame_size() full-size + binned-/quarter-size */
98 #define OV2680_FRAME_SIZES 2
99
100 static const char * const ov2680_supply_name[] = {
101 "DOVDD",
102 "DVDD",
103 "AVDD",
104 };
105
106 #define OV2680_NUM_SUPPLIES ARRAY_SIZE(ov2680_supply_name)
107
108 enum {
109 OV2680_19_2_MHZ,
110 OV2680_24_MHZ,
111 };
112
113 static const unsigned long ov2680_xvclk_freqs[] = {
114 [OV2680_19_2_MHZ] = 19200000,
115 [OV2680_24_MHZ] = 24000000,
116 };
117
118 static const u8 ov2680_pll_multipliers[] = {
119 [OV2680_19_2_MHZ] = 69,
120 [OV2680_24_MHZ] = 55,
121 };
122
123 struct ov2680_ctrls {
124 struct v4l2_ctrl_handler handler;
125 struct v4l2_ctrl *exposure;
126 struct v4l2_ctrl *gain;
127 struct v4l2_ctrl *hflip;
128 struct v4l2_ctrl *vflip;
129 struct v4l2_ctrl *test_pattern;
130 struct v4l2_ctrl *link_freq;
131 struct v4l2_ctrl *pixel_rate;
132 struct v4l2_ctrl *vblank;
133 struct v4l2_ctrl *hblank;
134 };
135
136 struct ov2680_mode {
137 struct v4l2_rect crop;
138 struct v4l2_mbus_framefmt fmt;
139 struct v4l2_fract frame_interval;
140 bool binning;
141 u16 h_start;
142 u16 v_start;
143 u16 h_end;
144 u16 v_end;
145 u16 h_output_size;
146 u16 v_output_size;
147 };
148
149 struct ov2680_dev {
150 struct device *dev;
151 struct regmap *regmap;
152 struct v4l2_subdev sd;
153
154 struct media_pad pad;
155 struct clk *xvclk;
156 u32 xvclk_freq;
157 u8 pll_mult;
158 s64 link_freq[1];
159 u64 pixel_rate;
160 struct regulator_bulk_data supplies[OV2680_NUM_SUPPLIES];
161
162 struct gpio_desc *pwdn_gpio;
163 struct mutex lock; /* protect members */
164
165 bool is_streaming;
166
167 struct ov2680_ctrls ctrls;
168 struct ov2680_mode mode;
169 };
170
171 static const struct v4l2_rect ov2680_default_crop = {
172 .left = OV2680_ACTIVE_START_LEFT,
173 .top = OV2680_ACTIVE_START_TOP,
174 .width = OV2680_ACTIVE_WIDTH,
175 .height = OV2680_ACTIVE_HEIGHT,
176 };
177
178 static const char * const test_pattern_menu[] = {
179 "Disabled",
180 "Color Bars",
181 "Random Data",
182 "Square",
183 "Black Image",
184 };
185
186 static const int ov2680_hv_flip_bayer_order[] = {
187 MEDIA_BUS_FMT_SBGGR10_1X10,
188 MEDIA_BUS_FMT_SGRBG10_1X10,
189 MEDIA_BUS_FMT_SGBRG10_1X10,
190 MEDIA_BUS_FMT_SRGGB10_1X10,
191 };
192
193 static const struct reg_sequence ov2680_global_setting[] = {
194 /* MIPI PHY, 0x10 -> 0x1c enable bp_c_hs_en_lat and bp_d_hs_en_lat */
195 {0x3016, 0x1c},
196
197 /* R MANUAL set exposure and gain to manual (hw does not do auto) */
198 {0x3503, 0x03},
199
200 /* Analog control register tweaks */
201 {0x3603, 0x39}, /* Reset value 0x99 */
202 {0x3604, 0x24}, /* Reset value 0x74 */
203 {0x3621, 0x37}, /* Reset value 0x44 */
204
205 /* Sensor control register tweaks */
206 {0x3701, 0x64}, /* Reset value 0x61 */
207 {0x3705, 0x3c}, /* Reset value 0x21 */
208 {0x370c, 0x50}, /* Reset value 0x10 */
209 {0x370d, 0xc0}, /* Reset value 0x00 */
210 {0x3718, 0x88}, /* Reset value 0x80 */
211
212 /* PSRAM tweaks */
213 {0x3781, 0x80}, /* Reset value 0x00 */
214 {0x3784, 0x0c}, /* Reset value 0x00, based on OV2680_R1A_AM10.ovt */
215 {0x3789, 0x60}, /* Reset value 0x50 */
216
217 /* BLC CTRL00 0x01 -> 0x81 set avg_weight to 8 */
218 {0x4000, 0x81},
219
220 /* Set black level compensation range to 0 - 3 (default 0 - 11) */
221 {0x4008, 0x00},
222 {0x4009, 0x03},
223
224 /* VFIFO R2 0x00 -> 0x02 set Frame reset enable */
225 {0x4602, 0x02},
226
227 /* MIPI ctrl CLK PREPARE MIN change from 0x26 (38) -> 0x36 (54) */
228 {0x481f, 0x36},
229
230 /* MIPI ctrl CLK LPX P MIN change from 0x32 (50) -> 0x36 (54) */
231 {0x4825, 0x36},
232
233 /* R ISP CTRL2 0x20 -> 0x30, set sof_sel bit */
234 {0x5002, 0x30},
235
236 /*
237 * Window CONTROL 0x00 -> 0x01, enable manual window control,
238 * this is necessary for full size flip and mirror support.
239 */
240 {0x5708, 0x01},
241
242 /*
243 * DPC CTRL0 0x14 -> 0x3e, set enable_tail, enable_3x3_cluster
244 * and enable_general_tail bits based OV2680_R1A_AM10.ovt.
245 */
246 {0x5780, 0x3e},
247
248 /* DPC MORE CONNECTION CASE THRE 0x0c (12) -> 0x02 (2) */
249 {0x5788, 0x02},
250
251 /* DPC GAIN LIST1 0x0f (15) -> 0x08 (8) */
252 {0x578e, 0x08},
253
254 /* DPC GAIN LIST2 0x3f (63) -> 0x0c (12) */
255 {0x578f, 0x0c},
256
257 /* DPC THRE RATIO 0x04 (4) -> 0x00 (0) */
258 {0x5792, 0x00},
259 };
260
261 static struct ov2680_dev *to_ov2680_dev(struct v4l2_subdev *sd)
262 {
263 return container_of(sd, struct ov2680_dev, sd);
264 }
265
266 static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl)
267 {
268 return &container_of(ctrl->handler, struct ov2680_dev,
269 ctrls.handler)->sd;
270 }
271
272 static void ov2680_power_up(struct ov2680_dev *sensor)
273 {
274 if (!sensor->pwdn_gpio)
275 return;
276
277 gpiod_set_value(sensor->pwdn_gpio, 0);
278 usleep_range(5000, 10000);
279 }
280
281 static void ov2680_power_down(struct ov2680_dev *sensor)
282 {
283 if (!sensor->pwdn_gpio)
284 return;
285
286 gpiod_set_value(sensor->pwdn_gpio, 1);
287 usleep_range(5000, 10000);
288 }
289
290 static void ov2680_set_bayer_order(struct ov2680_dev *sensor,
291 struct v4l2_mbus_framefmt *fmt)
292 {
293 int hv_flip = 0;
294
295 if (sensor->ctrls.vflip && sensor->ctrls.vflip->val)
296 hv_flip += 1;
297
298 if (sensor->ctrls.hflip && sensor->ctrls.hflip->val)
299 hv_flip += 2;
300
301 fmt->code = ov2680_hv_flip_bayer_order[hv_flip];
302 }
303
304 static struct v4l2_mbus_framefmt *
305 __ov2680_get_pad_format(struct ov2680_dev *sensor,
306 struct v4l2_subdev_state *state,
307 unsigned int pad,
308 enum v4l2_subdev_format_whence which)
309 {
310 if (which == V4L2_SUBDEV_FORMAT_TRY)
311 return v4l2_subdev_state_get_format(state, pad);
312
313 return &sensor->mode.fmt;
314 }
315
316 static struct v4l2_rect *
317 __ov2680_get_pad_crop(struct ov2680_dev *sensor,
318 struct v4l2_subdev_state *state,
319 unsigned int pad,
320 enum v4l2_subdev_format_whence which)
321 {
322 if (which == V4L2_SUBDEV_FORMAT_TRY)
323 return v4l2_subdev_state_get_crop(state, pad);
324
325 return &sensor->mode.crop;
326 }
327
328 static void ov2680_fill_format(struct ov2680_dev *sensor,
329 struct v4l2_mbus_framefmt *fmt,
330 unsigned int width, unsigned int height)
331 {
332 memset(fmt, 0, sizeof(*fmt));
333 fmt->width = width;
334 fmt->height = height;
335 fmt->field = V4L2_FIELD_NONE;
336 fmt->colorspace = V4L2_COLORSPACE_SRGB;
337 ov2680_set_bayer_order(sensor, fmt);
338 }
339
340 static void ov2680_calc_mode(struct ov2680_dev *sensor)
341 {
342 int width = sensor->mode.fmt.width;
343 int height = sensor->mode.fmt.height;
344 int orig_width = width;
345 int orig_height = height;
346
347 if (width <= (sensor->mode.crop.width / 2) &&
348 height <= (sensor->mode.crop.height / 2)) {
349 sensor->mode.binning = true;
350 width *= 2;
351 height *= 2;
352 } else {
353 sensor->mode.binning = false;
354 }
355
356 sensor->mode.h_start = (sensor->mode.crop.left +
357 (sensor->mode.crop.width - width) / 2) & ~1;
358 sensor->mode.v_start = (sensor->mode.crop.top +
359 (sensor->mode.crop.height - height) / 2) & ~1;
360 sensor->mode.h_end =
361 min(sensor->mode.h_start + width - 1, OV2680_NATIVE_WIDTH - 1);
362 sensor->mode.v_end =
363 min(sensor->mode.v_start + height - 1, OV2680_NATIVE_HEIGHT - 1);
364 sensor->mode.h_output_size = orig_width;
365 sensor->mode.v_output_size = orig_height;
366 }
367
368 static int ov2680_set_mode(struct ov2680_dev *sensor)
369 {
370 u8 sensor_ctrl_0a, inc, fmt1, fmt2;
371 int ret = 0;
372
373 if (sensor->mode.binning) {
374 sensor_ctrl_0a = 0x23;
375 inc = 0x31;
376 fmt1 = 0xc2;
377 fmt2 = 0x01;
378 } else {
379 sensor_ctrl_0a = 0x21;
380 inc = 0x11;
381 fmt1 = 0xc0;
382 fmt2 = 0x00;
383 }
384
385 cci_write(sensor->regmap, OV2680_REG_SENSOR_CTRL_0A,
386 sensor_ctrl_0a, &ret);
387 cci_write(sensor->regmap, OV2680_REG_HORIZONTAL_START,
388 sensor->mode.h_start, &ret);
389 cci_write(sensor->regmap, OV2680_REG_VERTICAL_START,
390 sensor->mode.v_start, &ret);
391 cci_write(sensor->regmap, OV2680_REG_HORIZONTAL_END,
392 sensor->mode.h_end, &ret);
393 cci_write(sensor->regmap, OV2680_REG_VERTICAL_END,
394 sensor->mode.v_end, &ret);
395 cci_write(sensor->regmap, OV2680_REG_HORIZONTAL_OUTPUT_SIZE,
396 sensor->mode.h_output_size, &ret);
397 cci_write(sensor->regmap, OV2680_REG_VERTICAL_OUTPUT_SIZE,
398 sensor->mode.v_output_size, &ret);
399 cci_write(sensor->regmap, OV2680_REG_TIMING_HTS,
400 OV2680_PIXELS_PER_LINE, &ret);
401 /* VTS gets set by the vblank ctrl */
402 cci_write(sensor->regmap, OV2680_REG_ISP_X_WIN, 0, &ret);
403 cci_write(sensor->regmap, OV2680_REG_ISP_Y_WIN, 0, &ret);
404 cci_write(sensor->regmap, OV2680_REG_X_INC, inc, &ret);
405 cci_write(sensor->regmap, OV2680_REG_Y_INC, inc, &ret);
406 cci_write(sensor->regmap, OV2680_REG_X_WIN,
407 sensor->mode.h_output_size, &ret);
408 cci_write(sensor->regmap, OV2680_REG_Y_WIN,
409 sensor->mode.v_output_size, &ret);
410 cci_write(sensor->regmap, OV2680_REG_FORMAT1, fmt1, &ret);
411 cci_write(sensor->regmap, OV2680_REG_FORMAT2, fmt2, &ret);
412
413 return ret;
414 }
415
416 static int ov2680_set_vflip(struct ov2680_dev *sensor, s32 val)
417 {
418 int ret;
419
420 if (sensor->is_streaming)
421 return -EBUSY;
422
423 ret = cci_update_bits(sensor->regmap, OV2680_REG_FORMAT1,
424 BIT(2), val ? BIT(2) : 0, NULL);
425 if (ret < 0)
426 return ret;
427
428 ov2680_set_bayer_order(sensor, &sensor->mode.fmt);
429 return 0;
430 }
431
432 static int ov2680_set_hflip(struct ov2680_dev *sensor, s32 val)
433 {
434 int ret;
435
436 if (sensor->is_streaming)
437 return -EBUSY;
438
439 ret = cci_update_bits(sensor->regmap, OV2680_REG_FORMAT2,
440 BIT(2), val ? BIT(2) : 0, NULL);
441 if (ret < 0)
442 return ret;
443
444 ov2680_set_bayer_order(sensor, &sensor->mode.fmt);
445 return 0;
446 }
447
448 static int ov2680_test_pattern_set(struct ov2680_dev *sensor, int value)
449 {
450 int ret = 0;
451
452 if (!value)
453 return cci_update_bits(sensor->regmap, OV2680_REG_ISP_CTRL00,
454 BIT(7), 0, NULL);
455
456 cci_update_bits(sensor->regmap, OV2680_REG_ISP_CTRL00,
457 0x03, value - 1, &ret);
458 cci_update_bits(sensor->regmap, OV2680_REG_ISP_CTRL00,
459 BIT(7), BIT(7), &ret);
460
461 return ret;
462 }
463
464 static int ov2680_gain_set(struct ov2680_dev *sensor, u32 gain)
465 {
466 return cci_write(sensor->regmap, OV2680_REG_GAIN_PK, gain, NULL);
467 }
468
469 static int ov2680_exposure_set(struct ov2680_dev *sensor, u32 exp)
470 {
471 return cci_write(sensor->regmap, OV2680_REG_EXPOSURE_PK, exp << 4,
472 NULL);
473 }
474
475 static int ov2680_exposure_update_range(struct ov2680_dev *sensor)
476 {
477 int exp_max = sensor->mode.fmt.height + sensor->ctrls.vblank->val -
478 OV2680_INTEGRATION_TIME_MARGIN;
479
480 return __v4l2_ctrl_modify_range(sensor->ctrls.exposure, 0, exp_max,
481 1, exp_max);
482 }
483
484 static int ov2680_stream_enable(struct ov2680_dev *sensor)
485 {
486 int ret;
487
488 ret = cci_write(sensor->regmap, OV2680_REG_PLL_MULTIPLIER,
489 sensor->pll_mult, NULL);
490 if (ret < 0)
491 return ret;
492
493 ret = regmap_multi_reg_write(sensor->regmap,
494 ov2680_global_setting,
495 ARRAY_SIZE(ov2680_global_setting));
496 if (ret < 0)
497 return ret;
498
499 ret = ov2680_set_mode(sensor);
500 if (ret < 0)
501 return ret;
502
503 /* Restore value of all ctrls */
504 ret = __v4l2_ctrl_handler_setup(&sensor->ctrls.handler);
505 if (ret < 0)
506 return ret;
507
508 return cci_write(sensor->regmap, OV2680_REG_STREAM_CTRL, 1, NULL);
509 }
510
511 static int ov2680_stream_disable(struct ov2680_dev *sensor)
512 {
513 return cci_write(sensor->regmap, OV2680_REG_STREAM_CTRL, 0, NULL);
514 }
515
516 static int ov2680_power_off(struct ov2680_dev *sensor)
517 {
518 clk_disable_unprepare(sensor->xvclk);
519 ov2680_power_down(sensor);
520 regulator_bulk_disable(OV2680_NUM_SUPPLIES, sensor->supplies);
521 return 0;
522 }
523
524 static int ov2680_power_on(struct ov2680_dev *sensor)
525 {
526 int ret;
527
528 ret = regulator_bulk_enable(OV2680_NUM_SUPPLIES, sensor->supplies);
529 if (ret < 0) {
530 dev_err(sensor->dev, "failed to enable regulators: %d\n", ret);
531 return ret;
532 }
533
534 if (!sensor->pwdn_gpio) {
535 ret = cci_write(sensor->regmap, OV2680_REG_SOFT_RESET, 0x01,
536 NULL);
537 if (ret != 0) {
538 dev_err(sensor->dev, "sensor soft reset failed\n");
539 goto err_disable_regulators;
540 }
541 usleep_range(1000, 2000);
542 } else {
543 ov2680_power_down(sensor);
544 ov2680_power_up(sensor);
545 }
546
547 ret = clk_prepare_enable(sensor->xvclk);
548 if (ret < 0)
549 goto err_disable_regulators;
550
551 return 0;
552
553 err_disable_regulators:
554 regulator_bulk_disable(OV2680_NUM_SUPPLIES, sensor->supplies);
555 return ret;
556 }
557
558 static int ov2680_get_frame_interval(struct v4l2_subdev *sd,
559 struct v4l2_subdev_state *sd_state,
560 struct v4l2_subdev_frame_interval *fi)
561 {
562 struct ov2680_dev *sensor = to_ov2680_dev(sd);
563
564 /*
565 * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
566 * subdev active state API.
567 */
568 if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
569 return -EINVAL;
570
571 mutex_lock(&sensor->lock);
572 fi->interval = sensor->mode.frame_interval;
573 mutex_unlock(&sensor->lock);
574
575 return 0;
576 }
577
578 static int ov2680_s_stream(struct v4l2_subdev *sd, int enable)
579 {
580 struct ov2680_dev *sensor = to_ov2680_dev(sd);
581 int ret = 0;
582
583 mutex_lock(&sensor->lock);
584
585 if (sensor->is_streaming == !!enable)
586 goto unlock;
587
588 if (enable) {
589 ret = pm_runtime_resume_and_get(sensor->sd.dev);
590 if (ret < 0)
591 goto unlock;
592
593 ret = ov2680_stream_enable(sensor);
594 if (ret < 0) {
595 pm_runtime_put(sensor->sd.dev);
596 goto unlock;
597 }
598 } else {
599 ret = ov2680_stream_disable(sensor);
600 pm_runtime_put(sensor->sd.dev);
601 }
602
603 sensor->is_streaming = !!enable;
604
605 unlock:
606 mutex_unlock(&sensor->lock);
607
608 return ret;
609 }
610
611 static int ov2680_enum_mbus_code(struct v4l2_subdev *sd,
612 struct v4l2_subdev_state *sd_state,
613 struct v4l2_subdev_mbus_code_enum *code)
614 {
615 struct ov2680_dev *sensor = to_ov2680_dev(sd);
616
617 if (code->index != 0)
618 return -EINVAL;
619
620 code->code = sensor->mode.fmt.code;
621
622 return 0;
623 }
624
625 static int ov2680_get_fmt(struct v4l2_subdev *sd,
626 struct v4l2_subdev_state *sd_state,
627 struct v4l2_subdev_format *format)
628 {
629 struct ov2680_dev *sensor = to_ov2680_dev(sd);
630 struct v4l2_mbus_framefmt *fmt;
631
632 fmt = __ov2680_get_pad_format(sensor, sd_state, format->pad,
633 format->which);
634
635 mutex_lock(&sensor->lock);
636 format->format = *fmt;
637 mutex_unlock(&sensor->lock);
638
639 return 0;
640 }
641
642 static int ov2680_set_fmt(struct v4l2_subdev *sd,
643 struct v4l2_subdev_state *sd_state,
644 struct v4l2_subdev_format *format)
645 {
646 struct ov2680_dev *sensor = to_ov2680_dev(sd);
647 struct v4l2_mbus_framefmt *try_fmt;
648 const struct v4l2_rect *crop;
649 unsigned int width, height;
650 int def, max, ret = 0;
651
652 crop = __ov2680_get_pad_crop(sensor, sd_state, format->pad,
653 format->which);
654
655 /* Limit set_fmt max size to crop width / height */
656 width = clamp_val(ALIGN(format->format.width, 2),
657 OV2680_MIN_CROP_WIDTH, crop->width);
658 height = clamp_val(ALIGN(format->format.height, 2),
659 OV2680_MIN_CROP_HEIGHT, crop->height);
660
661 ov2680_fill_format(sensor, &format->format, width, height);
662
663 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
664 try_fmt = v4l2_subdev_state_get_format(sd_state, 0);
665 *try_fmt = format->format;
666 return 0;
667 }
668
669 mutex_lock(&sensor->lock);
670
671 if (sensor->is_streaming) {
672 ret = -EBUSY;
673 goto unlock;
674 }
675
676 sensor->mode.fmt = format->format;
677 ov2680_calc_mode(sensor);
678
679 /* vblank range is height dependent adjust and reset to default */
680 max = OV2680_MAX_VBLANK - height;
681 def = OV2680_LINES_PER_FRAME_30FPS - height;
682 ret = __v4l2_ctrl_modify_range(sensor->ctrls.vblank, OV2680_MIN_VBLANK,
683 max, 1, def);
684 if (ret)
685 goto unlock;
686
687 ret = __v4l2_ctrl_s_ctrl(sensor->ctrls.vblank, def);
688 if (ret)
689 goto unlock;
690
691 /* exposure range depends on vts which may have changed */
692 ret = ov2680_exposure_update_range(sensor);
693 if (ret)
694 goto unlock;
695
696 /* adjust hblank value for new width */
697 def = OV2680_PIXELS_PER_LINE - width;
698 ret = __v4l2_ctrl_modify_range(sensor->ctrls.hblank, def, def, 1, def);
699
700 unlock:
701 mutex_unlock(&sensor->lock);
702
703 return ret;
704 }
705
706 static int ov2680_get_selection(struct v4l2_subdev *sd,
707 struct v4l2_subdev_state *state,
708 struct v4l2_subdev_selection *sel)
709 {
710 struct ov2680_dev *sensor = to_ov2680_dev(sd);
711
712 switch (sel->target) {
713 case V4L2_SEL_TGT_CROP:
714 mutex_lock(&sensor->lock);
715 sel->r = *__ov2680_get_pad_crop(sensor, state, sel->pad,
716 sel->which);
717 mutex_unlock(&sensor->lock);
718 break;
719 case V4L2_SEL_TGT_NATIVE_SIZE:
720 case V4L2_SEL_TGT_CROP_BOUNDS:
721 sel->r.top = 0;
722 sel->r.left = 0;
723 sel->r.width = OV2680_NATIVE_WIDTH;
724 sel->r.height = OV2680_NATIVE_HEIGHT;
725 break;
726 case V4L2_SEL_TGT_CROP_DEFAULT:
727 sel->r = ov2680_default_crop;
728 break;
729 default:
730 return -EINVAL;
731 }
732
733 return 0;
734 }
735
736 static int ov2680_set_selection(struct v4l2_subdev *sd,
737 struct v4l2_subdev_state *state,
738 struct v4l2_subdev_selection *sel)
739 {
740 struct ov2680_dev *sensor = to_ov2680_dev(sd);
741 struct v4l2_mbus_framefmt *format;
742 struct v4l2_rect *crop;
743 struct v4l2_rect rect;
744
745 if (sel->target != V4L2_SEL_TGT_CROP)
746 return -EINVAL;
747
748 /*
749 * Clamp the boundaries of the crop rectangle to the size of the sensor
750 * pixel array. Align to multiples of 2 to ensure Bayer pattern isn't
751 * disrupted.
752 */
753 rect.left = clamp_val(ALIGN(sel->r.left, 2),
754 OV2680_NATIVE_START_LEFT, OV2680_NATIVE_WIDTH);
755 rect.top = clamp_val(ALIGN(sel->r.top, 2),
756 OV2680_NATIVE_START_TOP, OV2680_NATIVE_HEIGHT);
757 rect.width = clamp_val(ALIGN(sel->r.width, 2),
758 OV2680_MIN_CROP_WIDTH, OV2680_NATIVE_WIDTH);
759 rect.height = clamp_val(ALIGN(sel->r.height, 2),
760 OV2680_MIN_CROP_HEIGHT, OV2680_NATIVE_HEIGHT);
761
762 /* Make sure the crop rectangle isn't outside the bounds of the array */
763 rect.width = min_t(unsigned int, rect.width,
764 OV2680_NATIVE_WIDTH - rect.left);
765 rect.height = min_t(unsigned int, rect.height,
766 OV2680_NATIVE_HEIGHT - rect.top);
767
768 crop = __ov2680_get_pad_crop(sensor, state, sel->pad, sel->which);
769
770 mutex_lock(&sensor->lock);
771 if (rect.width != crop->width || rect.height != crop->height) {
772 /*
773 * Reset the output image size if the crop rectangle size has
774 * been modified.
775 */
776 format = __ov2680_get_pad_format(sensor, state, sel->pad,
777 sel->which);
778 format->width = rect.width;
779 format->height = rect.height;
780 }
781
782 *crop = rect;
783 mutex_unlock(&sensor->lock);
784
785 sel->r = rect;
786
787 return 0;
788 }
789
790 static int ov2680_init_state(struct v4l2_subdev *sd,
791 struct v4l2_subdev_state *sd_state)
792 {
793 struct ov2680_dev *sensor = to_ov2680_dev(sd);
794
795 *v4l2_subdev_state_get_crop(sd_state, 0) = ov2680_default_crop;
796
797 ov2680_fill_format(sensor, v4l2_subdev_state_get_format(sd_state, 0),
798 OV2680_DEFAULT_WIDTH, OV2680_DEFAULT_HEIGHT);
799 return 0;
800 }
801
802 static int ov2680_enum_frame_size(struct v4l2_subdev *sd,
803 struct v4l2_subdev_state *sd_state,
804 struct v4l2_subdev_frame_size_enum *fse)
805 {
806 struct ov2680_dev *sensor = to_ov2680_dev(sd);
807 struct v4l2_rect *crop;
808
809 if (fse->index >= OV2680_FRAME_SIZES)
810 return -EINVAL;
811
812 crop = __ov2680_get_pad_crop(sensor, sd_state, fse->pad, fse->which);
813 if (!crop)
814 return -EINVAL;
815
816 fse->min_width = crop->width / (fse->index + 1);
817 fse->min_height = crop->height / (fse->index + 1);
818 fse->max_width = fse->min_width;
819 fse->max_height = fse->min_height;
820
821 return 0;
822 }
823
824 static bool ov2680_valid_frame_size(struct v4l2_subdev *sd,
825 struct v4l2_subdev_state *sd_state,
826 struct v4l2_subdev_frame_interval_enum *fie)
827 {
828 struct v4l2_subdev_frame_size_enum fse = {
829 .pad = fie->pad,
830 .which = fie->which,
831 };
832 int i;
833
834 for (i = 0; i < OV2680_FRAME_SIZES; i++) {
835 fse.index = i;
836
837 if (ov2680_enum_frame_size(sd, sd_state, &fse))
838 return false;
839
840 if (fie->width == fse.min_width &&
841 fie->height == fse.min_height)
842 return true;
843 }
844
845 return false;
846 }
847
848 static int ov2680_enum_frame_interval(struct v4l2_subdev *sd,
849 struct v4l2_subdev_state *sd_state,
850 struct v4l2_subdev_frame_interval_enum *fie)
851 {
852 struct ov2680_dev *sensor = to_ov2680_dev(sd);
853
854 /* Only 1 framerate */
855 if (fie->index || !ov2680_valid_frame_size(sd, sd_state, fie))
856 return -EINVAL;
857
858 fie->interval = sensor->mode.frame_interval;
859
860 return 0;
861 }
862
863 static int ov2680_s_ctrl(struct v4l2_ctrl *ctrl)
864 {
865 struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
866 struct ov2680_dev *sensor = to_ov2680_dev(sd);
867 int ret;
868
869 /* Update exposure range on vblank changes */
870 if (ctrl->id == V4L2_CID_VBLANK) {
871 ret = ov2680_exposure_update_range(sensor);
872 if (ret)
873 return ret;
874 }
875
876 /* Only apply changes to the controls if the device is powered up */
877 if (!pm_runtime_get_if_in_use(sensor->sd.dev)) {
878 ov2680_set_bayer_order(sensor, &sensor->mode.fmt);
879 return 0;
880 }
881
882 switch (ctrl->id) {
883 case V4L2_CID_ANALOGUE_GAIN:
884 ret = ov2680_gain_set(sensor, ctrl->val);
885 break;
886 case V4L2_CID_EXPOSURE:
887 ret = ov2680_exposure_set(sensor, ctrl->val);
888 break;
889 case V4L2_CID_VFLIP:
890 ret = ov2680_set_vflip(sensor, ctrl->val);
891 break;
892 case V4L2_CID_HFLIP:
893 ret = ov2680_set_hflip(sensor, ctrl->val);
894 break;
895 case V4L2_CID_TEST_PATTERN:
896 ret = ov2680_test_pattern_set(sensor, ctrl->val);
897 break;
898 case V4L2_CID_VBLANK:
899 ret = cci_write(sensor->regmap, OV2680_REG_TIMING_VTS,
900 sensor->mode.fmt.height + ctrl->val, NULL);
901 break;
902 default:
903 ret = -EINVAL;
904 break;
905 }
906
907 pm_runtime_put(sensor->sd.dev);
908 return ret;
909 }
910
911 static const struct v4l2_ctrl_ops ov2680_ctrl_ops = {
912 .s_ctrl = ov2680_s_ctrl,
913 };
914
915 static const struct v4l2_subdev_video_ops ov2680_video_ops = {
916 .s_stream = ov2680_s_stream,
917 };
918
919 static const struct v4l2_subdev_pad_ops ov2680_pad_ops = {
920 .enum_mbus_code = ov2680_enum_mbus_code,
921 .enum_frame_size = ov2680_enum_frame_size,
922 .enum_frame_interval = ov2680_enum_frame_interval,
923 .get_fmt = ov2680_get_fmt,
924 .set_fmt = ov2680_set_fmt,
925 .get_selection = ov2680_get_selection,
926 .set_selection = ov2680_set_selection,
927 .get_frame_interval = ov2680_get_frame_interval,
928 .set_frame_interval = ov2680_get_frame_interval,
929 };
930
931 static const struct v4l2_subdev_ops ov2680_subdev_ops = {
932 .video = &ov2680_video_ops,
933 .pad = &ov2680_pad_ops,
934 };
935
936 static const struct v4l2_subdev_internal_ops ov2680_internal_ops = {
937 .init_state = ov2680_init_state,
938 };
939
940 static int ov2680_mode_init(struct ov2680_dev *sensor)
941 {
942 /* set initial mode */
943 sensor->mode.crop = ov2680_default_crop;
944 ov2680_fill_format(sensor, &sensor->mode.fmt,
945 OV2680_DEFAULT_WIDTH, OV2680_DEFAULT_HEIGHT);
946 ov2680_calc_mode(sensor);
947
948 sensor->mode.frame_interval.denominator = OV2680_FRAME_RATE;
949 sensor->mode.frame_interval.numerator = 1;
950
951 return 0;
952 }
953
954 static int ov2680_v4l2_register(struct ov2680_dev *sensor)
955 {
956 struct i2c_client *client = to_i2c_client(sensor->dev);
957 const struct v4l2_ctrl_ops *ops = &ov2680_ctrl_ops;
958 struct ov2680_ctrls *ctrls = &sensor->ctrls;
959 struct v4l2_ctrl_handler *hdl = &ctrls->handler;
960 struct v4l2_fwnode_device_properties props;
961 int def, max, ret = 0;
962
963 v4l2_i2c_subdev_init(&sensor->sd, client, &ov2680_subdev_ops);
964 sensor->sd.internal_ops = &ov2680_internal_ops;
965
966 sensor->sd.flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
967 sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
968 sensor->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
969
970 ret = media_entity_pads_init(&sensor->sd.entity, 1, &sensor->pad);
971 if (ret < 0)
972 return ret;
973
974 v4l2_ctrl_handler_init(hdl, 11);
975
976 hdl->lock = &sensor->lock;
977
978 ctrls->vflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP, 0, 1, 1, 0);
979 ctrls->hflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP, 0, 1, 1, 0);
980
981 ctrls->test_pattern = v4l2_ctrl_new_std_menu_items(hdl,
982 &ov2680_ctrl_ops, V4L2_CID_TEST_PATTERN,
983 ARRAY_SIZE(test_pattern_menu) - 1,
984 0, 0, test_pattern_menu);
985
986 max = OV2680_LINES_PER_FRAME_30FPS - OV2680_INTEGRATION_TIME_MARGIN;
987 ctrls->exposure = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE,
988 0, max, 1, max);
989
990 ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_ANALOGUE_GAIN,
991 0, 1023, 1, 250);
992
993 ctrls->link_freq = v4l2_ctrl_new_int_menu(hdl, NULL, V4L2_CID_LINK_FREQ,
994 0, 0, sensor->link_freq);
995 ctrls->pixel_rate = v4l2_ctrl_new_std(hdl, NULL, V4L2_CID_PIXEL_RATE,
996 0, sensor->pixel_rate,
997 1, sensor->pixel_rate);
998
999 max = OV2680_MAX_VBLANK - OV2680_DEFAULT_HEIGHT;
1000 def = OV2680_LINES_PER_FRAME_30FPS - OV2680_DEFAULT_HEIGHT;
1001 ctrls->vblank = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VBLANK,
1002 OV2680_MIN_VBLANK, max, 1, def);
1003
1004 def = OV2680_PIXELS_PER_LINE - OV2680_DEFAULT_WIDTH;
1005 ctrls->hblank = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HBLANK,
1006 def, def, 1, def);
1007
1008 ret = v4l2_fwnode_device_parse(sensor->dev, &props);
1009 if (ret)
1010 goto cleanup_entity;
1011
1012 v4l2_ctrl_new_fwnode_properties(hdl, ops, &props);
1013
1014 if (hdl->error) {
1015 ret = hdl->error;
1016 goto cleanup_entity;
1017 }
1018
1019 ctrls->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
1020 ctrls->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
1021 ctrls->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1022 ctrls->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1023
1024 sensor->sd.ctrl_handler = hdl;
1025
1026 ret = v4l2_async_register_subdev(&sensor->sd);
1027 if (ret < 0)
1028 goto cleanup_entity;
1029
1030 return 0;
1031
1032 cleanup_entity:
1033 media_entity_cleanup(&sensor->sd.entity);
1034 v4l2_ctrl_handler_free(hdl);
1035
1036 return ret;
1037 }
1038
1039 static int ov2680_get_regulators(struct ov2680_dev *sensor)
1040 {
1041 int i;
1042
1043 for (i = 0; i < OV2680_NUM_SUPPLIES; i++)
1044 sensor->supplies[i].supply = ov2680_supply_name[i];
1045
1046 return devm_regulator_bulk_get(sensor->dev,
1047 OV2680_NUM_SUPPLIES, sensor->supplies);
1048 }
1049
1050 static int ov2680_check_id(struct ov2680_dev *sensor)
1051 {
1052 u64 chip_id, rev;
1053 int ret = 0;
1054
1055 cci_read(sensor->regmap, OV2680_REG_CHIP_ID, &chip_id, &ret);
1056 cci_read(sensor->regmap, OV2680_REG_SC_CMMN_SUB_ID, &rev, &ret);
1057 if (ret < 0) {
1058 dev_err(sensor->dev, "failed to read chip id\n");
1059 return ret;
1060 }
1061
1062 if (chip_id != OV2680_CHIP_ID) {
1063 dev_err(sensor->dev, "chip id: 0x%04llx does not match expected 0x%04x\n",
1064 chip_id, OV2680_CHIP_ID);
1065 return -ENODEV;
1066 }
1067
1068 dev_info(sensor->dev, "sensor_revision id = 0x%llx, rev= %lld\n",
1069 chip_id, rev & 0x0f);
1070
1071 return 0;
1072 }
1073
1074 static int ov2680_parse_dt(struct ov2680_dev *sensor)
1075 {
1076 struct v4l2_fwnode_endpoint bus_cfg = {
1077 .bus_type = V4L2_MBUS_CSI2_DPHY,
1078 };
1079 struct device *dev = sensor->dev;
1080 struct fwnode_handle *ep_fwnode;
1081 struct gpio_desc *gpio;
1082 unsigned int rate = 0;
1083 int i, ret;
1084
1085 /*
1086 * Sometimes the fwnode graph is initialized by the bridge driver.
1087 * Bridge drivers doing this may also add GPIO mappings, wait for this.
1088 */
1089 ep_fwnode = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL);
1090 if (!ep_fwnode)
1091 return dev_err_probe(dev, -EPROBE_DEFER,
1092 "waiting for fwnode graph endpoint\n");
1093
1094 ret = v4l2_fwnode_endpoint_alloc_parse(ep_fwnode, &bus_cfg);
1095 fwnode_handle_put(ep_fwnode);
1096 if (ret)
1097 return ret;
1098
1099 /*
1100 * The pin we want is named XSHUTDN in the datasheet. Linux sensor
1101 * drivers have standardized on using "powerdown" as con-id name
1102 * for powerdown or shutdown pins. Older DTB files use "reset",
1103 * so fallback to that if there is no "powerdown" pin.
1104 */
1105 gpio = devm_gpiod_get_optional(dev, "powerdown", GPIOD_OUT_HIGH);
1106 if (!gpio)
1107 gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
1108
1109 ret = PTR_ERR_OR_ZERO(gpio);
1110 if (ret < 0) {
1111 dev_dbg(dev, "error while getting reset gpio: %d\n", ret);
1112 goto out_free_bus_cfg;
1113 }
1114
1115 sensor->pwdn_gpio = gpio;
1116
1117 sensor->xvclk = devm_clk_get_optional(dev, "xvclk");
1118 if (IS_ERR(sensor->xvclk)) {
1119 ret = dev_err_probe(dev, PTR_ERR(sensor->xvclk),
1120 "xvclk clock missing or invalid\n");
1121 goto out_free_bus_cfg;
1122 }
1123
1124 /*
1125 * We could have either a 24MHz or 19.2MHz clock rate from either DT or
1126 * ACPI... but we also need to support the weird IPU3 case which will
1127 * have an external clock AND a clock-frequency property. Check for the
1128 * clock-frequency property and if found, set that rate if we managed
1129 * to acquire a clock. This should cover the ACPI case. If the system
1130 * uses devicetree then the configured rate should already be set, so
1131 * we can just read it.
1132 */
1133 ret = fwnode_property_read_u32(dev_fwnode(dev), "clock-frequency",
1134 &rate);
1135 if (ret && !sensor->xvclk) {
1136 dev_err_probe(dev, ret, "invalid clock config\n");
1137 goto out_free_bus_cfg;
1138 }
1139
1140 if (!ret && sensor->xvclk) {
1141 ret = clk_set_rate(sensor->xvclk, rate);
1142 if (ret) {
1143 dev_err_probe(dev, ret, "failed to set clock rate\n");
1144 goto out_free_bus_cfg;
1145 }
1146 }
1147
1148 sensor->xvclk_freq = rate ?: clk_get_rate(sensor->xvclk);
1149
1150 for (i = 0; i < ARRAY_SIZE(ov2680_xvclk_freqs); i++) {
1151 if (sensor->xvclk_freq == ov2680_xvclk_freqs[i])
1152 break;
1153 }
1154
1155 if (i == ARRAY_SIZE(ov2680_xvclk_freqs)) {
1156 ret = dev_err_probe(dev, -EINVAL,
1157 "unsupported xvclk frequency %d Hz\n",
1158 sensor->xvclk_freq);
1159 goto out_free_bus_cfg;
1160 }
1161
1162 sensor->pll_mult = ov2680_pll_multipliers[i];
1163
1164 sensor->link_freq[0] = sensor->xvclk_freq / OV2680_PLL_PREDIV0 /
1165 OV2680_PLL_PREDIV * sensor->pll_mult;
1166
1167 /* CSI-2 is double data rate, bus-format is 10 bpp */
1168 sensor->pixel_rate = sensor->link_freq[0] * 2;
1169 do_div(sensor->pixel_rate, 10);
1170
1171 if (!bus_cfg.nr_of_link_frequencies) {
1172 dev_warn(dev, "Consider passing 'link-frequencies' in DT\n");
1173 goto skip_link_freq_validation;
1174 }
1175
1176 for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++)
1177 if (bus_cfg.link_frequencies[i] == sensor->link_freq[0])
1178 break;
1179
1180 if (bus_cfg.nr_of_link_frequencies == i) {
1181 ret = dev_err_probe(dev, -EINVAL,
1182 "supported link freq %lld not found\n",
1183 sensor->link_freq[0]);
1184 goto out_free_bus_cfg;
1185 }
1186
1187 skip_link_freq_validation:
1188 ret = 0;
1189 out_free_bus_cfg:
1190 v4l2_fwnode_endpoint_free(&bus_cfg);
1191 return ret;
1192 }
1193
1194 static int ov2680_probe(struct i2c_client *client)
1195 {
1196 struct device *dev = &client->dev;
1197 struct ov2680_dev *sensor;
1198 int ret;
1199
1200 sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);
1201 if (!sensor)
1202 return -ENOMEM;
1203
1204 sensor->dev = &client->dev;
1205
1206 sensor->regmap = devm_cci_regmap_init_i2c(client, 16);
1207 if (IS_ERR(sensor->regmap))
1208 return PTR_ERR(sensor->regmap);
1209
1210 ret = ov2680_parse_dt(sensor);
1211 if (ret < 0)
1212 return ret;
1213
1214 ret = ov2680_mode_init(sensor);
1215 if (ret < 0)
1216 return ret;
1217
1218 ret = ov2680_get_regulators(sensor);
1219 if (ret < 0) {
1220 dev_err(dev, "failed to get regulators\n");
1221 return ret;
1222 }
1223
1224 mutex_init(&sensor->lock);
1225
1226 /*
1227 * Power up and verify the chip now, so that if runtime pm is
1228 * disabled the chip is left on and streaming will work.
1229 */
1230 ret = ov2680_power_on(sensor);
1231 if (ret < 0)
1232 goto lock_destroy;
1233
1234 ret = ov2680_check_id(sensor);
1235 if (ret < 0)
1236 goto err_powerdown;
1237
1238 pm_runtime_set_active(&client->dev);
1239 pm_runtime_get_noresume(&client->dev);
1240 pm_runtime_enable(&client->dev);
1241
1242 ret = ov2680_v4l2_register(sensor);
1243 if (ret < 0)
1244 goto err_pm_runtime;
1245
1246 pm_runtime_set_autosuspend_delay(&client->dev, 1000);
1247 pm_runtime_use_autosuspend(&client->dev);
1248 pm_runtime_put_autosuspend(&client->dev);
1249
1250 return 0;
1251
1252 err_pm_runtime:
1253 pm_runtime_disable(&client->dev);
1254 pm_runtime_put_noidle(&client->dev);
1255 err_powerdown:
1256 ov2680_power_off(sensor);
1257 lock_destroy:
1258 dev_err(dev, "ov2680 init fail: %d\n", ret);
1259 mutex_destroy(&sensor->lock);
1260
1261 return ret;
1262 }
1263
1264 static void ov2680_remove(struct i2c_client *client)
1265 {
1266 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1267 struct ov2680_dev *sensor = to_ov2680_dev(sd);
1268
1269 v4l2_async_unregister_subdev(&sensor->sd);
1270 mutex_destroy(&sensor->lock);
1271 media_entity_cleanup(&sensor->sd.entity);
1272 v4l2_ctrl_handler_free(&sensor->ctrls.handler);
1273
1274 /*
1275 * Disable runtime PM. In case runtime PM is disabled in the kernel,
1276 * make sure to turn power off manually.
1277 */
1278 pm_runtime_disable(&client->dev);
1279 if (!pm_runtime_status_suspended(&client->dev))
1280 ov2680_power_off(sensor);
1281 pm_runtime_set_suspended(&client->dev);
1282 }
1283
1284 static int ov2680_suspend(struct device *dev)
1285 {
1286 struct v4l2_subdev *sd = dev_get_drvdata(dev);
1287 struct ov2680_dev *sensor = to_ov2680_dev(sd);
1288
1289 if (sensor->is_streaming)
1290 ov2680_stream_disable(sensor);
1291
1292 return ov2680_power_off(sensor);
1293 }
1294
1295 static int ov2680_resume(struct device *dev)
1296 {
1297 struct v4l2_subdev *sd = dev_get_drvdata(dev);
1298 struct ov2680_dev *sensor = to_ov2680_dev(sd);
1299 int ret;
1300
1301 ret = ov2680_power_on(sensor);
1302 if (ret < 0)
1303 goto stream_disable;
1304
1305 if (sensor->is_streaming) {
1306 ret = ov2680_stream_enable(sensor);
1307 if (ret < 0)
1308 goto stream_disable;
1309 }
1310
1311 return 0;
1312
1313 stream_disable:
1314 ov2680_stream_disable(sensor);
1315 sensor->is_streaming = false;
1316
1317 return ret;
1318 }
1319
1320 static DEFINE_RUNTIME_DEV_PM_OPS(ov2680_pm_ops, ov2680_suspend, ov2680_resume,
1321 NULL);
1322
1323 static const struct of_device_id ov2680_dt_ids[] = {
1324 { .compatible = "ovti,ov2680" },
1325 { /* sentinel */ },
1326 };
1327 MODULE_DEVICE_TABLE(of, ov2680_dt_ids);
1328
1329 static const struct acpi_device_id ov2680_acpi_ids[] = {
1330 { "OVTI2680" },
1331 { /* sentinel */ }
1332 };
1333 MODULE_DEVICE_TABLE(acpi, ov2680_acpi_ids);
1334
1335 static struct i2c_driver ov2680_i2c_driver = {
1336 .driver = {
1337 .name = "ov2680",
1338 .pm = pm_sleep_ptr(&ov2680_pm_ops),
1339 .of_match_table = ov2680_dt_ids,
1340 .acpi_match_table = ov2680_acpi_ids,
1341 },
1342 .probe = ov2680_probe,
1343 .remove = ov2680_remove,
1344 };
1345 module_i2c_driver(ov2680_i2c_driver);
1346
1347 MODULE_AUTHOR("Rui Miguel Silva <rui.silva@linaro.org>");
1348 MODULE_DESCRIPTION("OV2680 CMOS Image Sensor driver");
1349 MODULE_LICENSE("GPL v2");
Kernel DRM miscellaneous fixes and cross-tree changes