1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * OmniVision ov9282 Camera Sensor Driver |
4 | * |
5 | * Copyright (C) 2021 Intel Corporation |
6 | */ |
7 | #include <asm/unaligned.h> |
8 | |
9 | #include <linux/clk.h> |
10 | #include <linux/delay.h> |
11 | #include <linux/i2c.h> |
12 | #include <linux/module.h> |
13 | #include <linux/pm_runtime.h> |
14 | #include <linux/regulator/consumer.h> |
15 | |
16 | #include <media/v4l2-ctrls.h> |
17 | #include <media/v4l2-event.h> |
18 | #include <media/v4l2-fwnode.h> |
19 | #include <media/v4l2-subdev.h> |
20 | |
21 | /* Streaming Mode */ |
22 | #define OV9282_REG_MODE_SELECT 0x0100 |
23 | #define OV9282_MODE_STANDBY 0x00 |
24 | #define OV9282_MODE_STREAMING 0x01 |
25 | |
26 | #define OV9282_REG_PLL_CTRL_0D 0x030d |
27 | #define OV9282_PLL_CTRL_0D_RAW8 0x60 |
28 | #define OV9282_PLL_CTRL_0D_RAW10 0x50 |
29 | |
30 | #define OV9282_REG_TIMING_HTS 0x380c |
31 | #define OV9282_TIMING_HTS_MAX 0x7fff |
32 | |
33 | /* Lines per frame */ |
34 | #define OV9282_REG_LPFR 0x380e |
35 | |
36 | /* Chip ID */ |
37 | #define OV9282_REG_ID 0x300a |
38 | #define OV9282_ID 0x9281 |
39 | |
40 | /* Exposure control */ |
41 | #define OV9282_REG_EXPOSURE 0x3500 |
42 | #define OV9282_EXPOSURE_MIN 1 |
43 | #define OV9282_EXPOSURE_OFFSET 12 |
44 | #define OV9282_EXPOSURE_STEP 1 |
45 | #define OV9282_EXPOSURE_DEFAULT 0x0282 |
46 | |
47 | /* Analog gain control */ |
48 | #define OV9282_REG_AGAIN 0x3509 |
49 | #define OV9282_AGAIN_MIN 0x10 |
50 | #define OV9282_AGAIN_MAX 0xff |
51 | #define OV9282_AGAIN_STEP 1 |
52 | #define OV9282_AGAIN_DEFAULT 0x10 |
53 | |
54 | /* Group hold register */ |
55 | #define OV9282_REG_HOLD 0x3308 |
56 | |
57 | #define OV9282_REG_ANA_CORE_2 0x3662 |
58 | #define OV9282_ANA_CORE2_RAW8 0x07 |
59 | #define OV9282_ANA_CORE2_RAW10 0x05 |
60 | |
61 | #define OV9282_REG_TIMING_FORMAT_1 0x3820 |
62 | #define OV9282_REG_TIMING_FORMAT_2 0x3821 |
63 | #define OV9282_FLIP_BIT BIT(2) |
64 | |
65 | #define OV9282_REG_MIPI_CTRL00 0x4800 |
66 | #define OV9282_GATED_CLOCK BIT(5) |
67 | |
68 | /* Input clock rate */ |
69 | #define OV9282_INCLK_RATE 24000000 |
70 | |
71 | /* CSI2 HW configuration */ |
72 | #define OV9282_LINK_FREQ 400000000 |
73 | #define OV9282_NUM_DATA_LANES 2 |
74 | |
75 | /* Pixel rate */ |
76 | #define OV9282_PIXEL_RATE_10BIT (OV9282_LINK_FREQ * 2 * \ |
77 | OV9282_NUM_DATA_LANES / 10) |
78 | #define OV9282_PIXEL_RATE_8BIT (OV9282_LINK_FREQ * 2 * \ |
79 | OV9282_NUM_DATA_LANES / 8) |
80 | |
81 | /* |
82 | * OV9282 native and active pixel array size. |
83 | * 8 dummy rows/columns on each edge of a 1280x800 active array |
84 | */ |
85 | #define OV9282_NATIVE_WIDTH 1296U |
86 | #define OV9282_NATIVE_HEIGHT 816U |
87 | #define OV9282_PIXEL_ARRAY_LEFT 8U |
88 | #define OV9282_PIXEL_ARRAY_TOP 8U |
89 | #define OV9282_PIXEL_ARRAY_WIDTH 1280U |
90 | #define OV9282_PIXEL_ARRAY_HEIGHT 800U |
91 | |
92 | #define OV9282_REG_MIN 0x00 |
93 | #define OV9282_REG_MAX 0xfffff |
94 | |
95 | static const char * const ov9282_supply_names[] = { |
96 | "avdd" , /* Analog power */ |
97 | "dovdd" , /* Digital I/O power */ |
98 | "dvdd" , /* Digital core power */ |
99 | }; |
100 | |
101 | #define OV9282_NUM_SUPPLIES ARRAY_SIZE(ov9282_supply_names) |
102 | |
103 | /** |
104 | * struct ov9282_reg - ov9282 sensor register |
105 | * @address: Register address |
106 | * @val: Register value |
107 | */ |
108 | struct ov9282_reg { |
109 | u16 address; |
110 | u8 val; |
111 | }; |
112 | |
113 | /** |
114 | * struct ov9282_reg_list - ov9282 sensor register list |
115 | * @num_of_regs: Number of registers in the list |
116 | * @regs: Pointer to register list |
117 | */ |
118 | struct ov9282_reg_list { |
119 | u32 num_of_regs; |
120 | const struct ov9282_reg *regs; |
121 | }; |
122 | |
123 | /** |
124 | * struct ov9282_mode - ov9282 sensor mode structure |
125 | * @width: Frame width |
126 | * @height: Frame height |
127 | * @hblank_min: Minimum horizontal blanking in lines for non-continuous[0] and |
128 | * continuous[1] clock modes |
129 | * @vblank: Vertical blanking in lines |
130 | * @vblank_min: Minimum vertical blanking in lines |
131 | * @vblank_max: Maximum vertical blanking in lines |
132 | * @link_freq_idx: Link frequency index |
133 | * @crop: on-sensor cropping for this mode |
134 | * @reg_list: Register list for sensor mode |
135 | */ |
136 | struct ov9282_mode { |
137 | u32 width; |
138 | u32 height; |
139 | u32 hblank_min[2]; |
140 | u32 vblank; |
141 | u32 vblank_min; |
142 | u32 vblank_max; |
143 | u32 link_freq_idx; |
144 | struct v4l2_rect crop; |
145 | struct ov9282_reg_list reg_list; |
146 | }; |
147 | |
148 | /** |
149 | * struct ov9282 - ov9282 sensor device structure |
150 | * @dev: Pointer to generic device |
151 | * @sd: V4L2 sub-device |
152 | * @pad: Media pad. Only one pad supported |
153 | * @reset_gpio: Sensor reset gpio |
154 | * @inclk: Sensor input clock |
155 | * @supplies: Regulator supplies for the sensor |
156 | * @ctrl_handler: V4L2 control handler |
157 | * @link_freq_ctrl: Pointer to link frequency control |
158 | * @hblank_ctrl: Pointer to horizontal blanking control |
159 | * @vblank_ctrl: Pointer to vertical blanking control |
160 | * @exp_ctrl: Pointer to exposure control |
161 | * @again_ctrl: Pointer to analog gain control |
162 | * @pixel_rate: Pointer to pixel rate control |
163 | * @vblank: Vertical blanking in lines |
164 | * @noncontinuous_clock: Selection of CSI2 noncontinuous clock mode |
165 | * @cur_mode: Pointer to current selected sensor mode |
166 | * @code: Mbus code currently selected |
167 | * @mutex: Mutex for serializing sensor controls |
168 | */ |
169 | struct ov9282 { |
170 | struct device *dev; |
171 | struct v4l2_subdev sd; |
172 | struct media_pad pad; |
173 | struct gpio_desc *reset_gpio; |
174 | struct clk *inclk; |
175 | struct regulator_bulk_data supplies[OV9282_NUM_SUPPLIES]; |
176 | struct v4l2_ctrl_handler ctrl_handler; |
177 | struct v4l2_ctrl *link_freq_ctrl; |
178 | struct v4l2_ctrl *hblank_ctrl; |
179 | struct v4l2_ctrl *vblank_ctrl; |
180 | struct { |
181 | struct v4l2_ctrl *exp_ctrl; |
182 | struct v4l2_ctrl *again_ctrl; |
183 | }; |
184 | struct v4l2_ctrl *pixel_rate; |
185 | u32 vblank; |
186 | bool noncontinuous_clock; |
187 | const struct ov9282_mode *cur_mode; |
188 | u32 code; |
189 | struct mutex mutex; |
190 | }; |
191 | |
192 | static const s64 link_freq[] = { |
193 | OV9282_LINK_FREQ, |
194 | }; |
195 | |
196 | /* |
197 | * Common registers |
198 | * |
199 | * Note: Do NOT include a software reset (0x0103, 0x01) in any of these |
200 | * register arrays as some settings are written as part of ov9282_power_on, |
201 | * and the reset will clear them. |
202 | */ |
203 | static const struct ov9282_reg common_regs[] = { |
204 | {0x0302, 0x32}, |
205 | {0x030e, 0x02}, |
206 | {0x3001, 0x00}, |
207 | {0x3004, 0x00}, |
208 | {0x3005, 0x00}, |
209 | {0x3006, 0x04}, |
210 | {0x3011, 0x0a}, |
211 | {0x3013, 0x18}, |
212 | {0x301c, 0xf0}, |
213 | {0x3022, 0x01}, |
214 | {0x3030, 0x10}, |
215 | {0x3039, 0x32}, |
216 | {0x303a, 0x00}, |
217 | {0x3503, 0x08}, |
218 | {0x3505, 0x8c}, |
219 | {0x3507, 0x03}, |
220 | {0x3508, 0x00}, |
221 | {0x3610, 0x80}, |
222 | {0x3611, 0xa0}, |
223 | {0x3620, 0x6e}, |
224 | {0x3632, 0x56}, |
225 | {0x3633, 0x78}, |
226 | {0x3666, 0x00}, |
227 | {0x366f, 0x5a}, |
228 | {0x3680, 0x84}, |
229 | {0x3712, 0x80}, |
230 | {0x372d, 0x22}, |
231 | {0x3731, 0x80}, |
232 | {0x3732, 0x30}, |
233 | {0x377d, 0x22}, |
234 | {0x3788, 0x02}, |
235 | {0x3789, 0xa4}, |
236 | {0x378a, 0x00}, |
237 | {0x378b, 0x4a}, |
238 | {0x3799, 0x20}, |
239 | {0x3881, 0x42}, |
240 | {0x38a8, 0x02}, |
241 | {0x38a9, 0x80}, |
242 | {0x38b1, 0x00}, |
243 | {0x38c4, 0x00}, |
244 | {0x38c5, 0xc0}, |
245 | {0x38c6, 0x04}, |
246 | {0x38c7, 0x80}, |
247 | {0x3920, 0xff}, |
248 | {0x4010, 0x40}, |
249 | {0x4043, 0x40}, |
250 | {0x4307, 0x30}, |
251 | {0x4317, 0x00}, |
252 | {0x4501, 0x00}, |
253 | {0x450a, 0x08}, |
254 | {0x4601, 0x04}, |
255 | {0x470f, 0x00}, |
256 | {0x4f07, 0x00}, |
257 | {0x5000, 0x9f}, |
258 | {0x5001, 0x00}, |
259 | {0x5e00, 0x00}, |
260 | {0x5d00, 0x07}, |
261 | {0x5d01, 0x00}, |
262 | {0x0101, 0x01}, |
263 | {0x1000, 0x03}, |
264 | {0x5a08, 0x84}, |
265 | }; |
266 | |
267 | static struct ov9282_reg_list common_regs_list = { |
268 | .num_of_regs = ARRAY_SIZE(common_regs), |
269 | .regs = common_regs, |
270 | }; |
271 | |
272 | #define MODE_1280_800 0 |
273 | #define MODE_1280_720 1 |
274 | #define MODE_640_400 2 |
275 | |
276 | #define DEFAULT_MODE MODE_1280_720 |
277 | |
278 | /* Sensor mode registers */ |
279 | static const struct ov9282_reg mode_1280x800_regs[] = { |
280 | {0x3778, 0x00}, |
281 | {0x3800, 0x00}, |
282 | {0x3801, 0x00}, |
283 | {0x3802, 0x00}, |
284 | {0x3803, 0x00}, |
285 | {0x3804, 0x05}, |
286 | {0x3805, 0x0f}, |
287 | {0x3806, 0x03}, |
288 | {0x3807, 0x2f}, |
289 | {0x3808, 0x05}, |
290 | {0x3809, 0x00}, |
291 | {0x380a, 0x03}, |
292 | {0x380b, 0x20}, |
293 | {0x3810, 0x00}, |
294 | {0x3811, 0x08}, |
295 | {0x3812, 0x00}, |
296 | {0x3813, 0x08}, |
297 | {0x3814, 0x11}, |
298 | {0x3815, 0x11}, |
299 | {0x3820, 0x40}, |
300 | {0x3821, 0x00}, |
301 | {0x4003, 0x40}, |
302 | {0x4008, 0x04}, |
303 | {0x4009, 0x0b}, |
304 | {0x400c, 0x00}, |
305 | {0x400d, 0x07}, |
306 | {0x4507, 0x00}, |
307 | {0x4509, 0x00}, |
308 | }; |
309 | |
310 | static const struct ov9282_reg mode_1280x720_regs[] = { |
311 | {0x3778, 0x00}, |
312 | {0x3800, 0x00}, |
313 | {0x3801, 0x00}, |
314 | {0x3802, 0x00}, |
315 | {0x3803, 0x00}, |
316 | {0x3804, 0x05}, |
317 | {0x3805, 0x0f}, |
318 | {0x3806, 0x02}, |
319 | {0x3807, 0xdf}, |
320 | {0x3808, 0x05}, |
321 | {0x3809, 0x00}, |
322 | {0x380a, 0x02}, |
323 | {0x380b, 0xd0}, |
324 | {0x3810, 0x00}, |
325 | {0x3811, 0x08}, |
326 | {0x3812, 0x00}, |
327 | {0x3813, 0x08}, |
328 | {0x3814, 0x11}, |
329 | {0x3815, 0x11}, |
330 | {0x3820, 0x3c}, |
331 | {0x3821, 0x84}, |
332 | {0x4003, 0x40}, |
333 | {0x4008, 0x02}, |
334 | {0x4009, 0x05}, |
335 | {0x400c, 0x00}, |
336 | {0x400d, 0x03}, |
337 | {0x4507, 0x00}, |
338 | {0x4509, 0x80}, |
339 | }; |
340 | |
341 | static const struct ov9282_reg mode_640x400_regs[] = { |
342 | {0x3778, 0x10}, |
343 | {0x3800, 0x00}, |
344 | {0x3801, 0x00}, |
345 | {0x3802, 0x00}, |
346 | {0x3803, 0x00}, |
347 | {0x3804, 0x05}, |
348 | {0x3805, 0x0f}, |
349 | {0x3806, 0x03}, |
350 | {0x3807, 0x2f}, |
351 | {0x3808, 0x02}, |
352 | {0x3809, 0x80}, |
353 | {0x380a, 0x01}, |
354 | {0x380b, 0x90}, |
355 | {0x3810, 0x00}, |
356 | {0x3811, 0x04}, |
357 | {0x3812, 0x00}, |
358 | {0x3813, 0x04}, |
359 | {0x3814, 0x31}, |
360 | {0x3815, 0x22}, |
361 | {0x3820, 0x60}, |
362 | {0x3821, 0x01}, |
363 | {0x4008, 0x02}, |
364 | {0x4009, 0x05}, |
365 | {0x400c, 0x00}, |
366 | {0x400d, 0x03}, |
367 | {0x4507, 0x03}, |
368 | {0x4509, 0x80}, |
369 | }; |
370 | |
371 | /* Supported sensor mode configurations */ |
372 | static const struct ov9282_mode supported_modes[] = { |
373 | [MODE_1280_800] = { |
374 | .width = 1280, |
375 | .height = 800, |
376 | .hblank_min = { 250, 176 }, |
377 | .vblank = 1022, |
378 | .vblank_min = 110, |
379 | .vblank_max = 51540, |
380 | .link_freq_idx = 0, |
381 | .crop = { |
382 | .left = OV9282_PIXEL_ARRAY_LEFT, |
383 | .top = OV9282_PIXEL_ARRAY_TOP, |
384 | .width = 1280, |
385 | .height = 800 |
386 | }, |
387 | .reg_list = { |
388 | .num_of_regs = ARRAY_SIZE(mode_1280x800_regs), |
389 | .regs = mode_1280x800_regs, |
390 | }, |
391 | }, |
392 | [MODE_1280_720] = { |
393 | .width = 1280, |
394 | .height = 720, |
395 | .hblank_min = { 250, 176 }, |
396 | .vblank = 1022, |
397 | .vblank_min = 41, |
398 | .vblank_max = 51540, |
399 | .link_freq_idx = 0, |
400 | .crop = { |
401 | /* |
402 | * Note that this mode takes the top 720 lines from the |
403 | * 800 of the sensor. It does not take a middle crop. |
404 | */ |
405 | .left = OV9282_PIXEL_ARRAY_LEFT, |
406 | .top = OV9282_PIXEL_ARRAY_TOP, |
407 | .width = 1280, |
408 | .height = 720 |
409 | }, |
410 | .reg_list = { |
411 | .num_of_regs = ARRAY_SIZE(mode_1280x720_regs), |
412 | .regs = mode_1280x720_regs, |
413 | }, |
414 | }, |
415 | [MODE_640_400] = { |
416 | .width = 640, |
417 | .height = 400, |
418 | .hblank_min = { 890, 816 }, |
419 | .vblank = 1022, |
420 | .vblank_min = 22, |
421 | .vblank_max = 51540, |
422 | .link_freq_idx = 0, |
423 | .crop = { |
424 | .left = OV9282_PIXEL_ARRAY_LEFT, |
425 | .top = OV9282_PIXEL_ARRAY_TOP, |
426 | .width = 1280, |
427 | .height = 800 |
428 | }, |
429 | .reg_list = { |
430 | .num_of_regs = ARRAY_SIZE(mode_640x400_regs), |
431 | .regs = mode_640x400_regs, |
432 | }, |
433 | }, |
434 | }; |
435 | |
436 | /** |
437 | * to_ov9282() - ov9282 V4L2 sub-device to ov9282 device. |
438 | * @subdev: pointer to ov9282 V4L2 sub-device |
439 | * |
440 | * Return: pointer to ov9282 device |
441 | */ |
442 | static inline struct ov9282 *to_ov9282(struct v4l2_subdev *subdev) |
443 | { |
444 | return container_of(subdev, struct ov9282, sd); |
445 | } |
446 | |
447 | /** |
448 | * ov9282_read_reg() - Read registers. |
449 | * @ov9282: pointer to ov9282 device |
450 | * @reg: register address |
451 | * @len: length of bytes to read. Max supported bytes is 4 |
452 | * @val: pointer to register value to be filled. |
453 | * |
454 | * Return: 0 if successful, error code otherwise. |
455 | */ |
456 | static int ov9282_read_reg(struct ov9282 *ov9282, u16 reg, u32 len, u32 *val) |
457 | { |
458 | struct i2c_client *client = v4l2_get_subdevdata(sd: &ov9282->sd); |
459 | struct i2c_msg msgs[2] = {0}; |
460 | u8 addr_buf[2] = {0}; |
461 | u8 data_buf[4] = {0}; |
462 | int ret; |
463 | |
464 | if (WARN_ON(len > 4)) |
465 | return -EINVAL; |
466 | |
467 | put_unaligned_be16(val: reg, p: addr_buf); |
468 | |
469 | /* Write register address */ |
470 | msgs[0].addr = client->addr; |
471 | msgs[0].flags = 0; |
472 | msgs[0].len = ARRAY_SIZE(addr_buf); |
473 | msgs[0].buf = addr_buf; |
474 | |
475 | /* Read data from register */ |
476 | msgs[1].addr = client->addr; |
477 | msgs[1].flags = I2C_M_RD; |
478 | msgs[1].len = len; |
479 | msgs[1].buf = &data_buf[4 - len]; |
480 | |
481 | ret = i2c_transfer(adap: client->adapter, msgs, ARRAY_SIZE(msgs)); |
482 | if (ret != ARRAY_SIZE(msgs)) |
483 | return -EIO; |
484 | |
485 | *val = get_unaligned_be32(p: data_buf); |
486 | |
487 | return 0; |
488 | } |
489 | |
490 | /** |
491 | * ov9282_write_reg() - Write register |
492 | * @ov9282: pointer to ov9282 device |
493 | * @reg: register address |
494 | * @len: length of bytes. Max supported bytes is 4 |
495 | * @val: register value |
496 | * |
497 | * Return: 0 if successful, error code otherwise. |
498 | */ |
499 | static int ov9282_write_reg(struct ov9282 *ov9282, u16 reg, u32 len, u32 val) |
500 | { |
501 | struct i2c_client *client = v4l2_get_subdevdata(sd: &ov9282->sd); |
502 | u8 buf[6] = {0}; |
503 | |
504 | if (WARN_ON(len > 4)) |
505 | return -EINVAL; |
506 | |
507 | put_unaligned_be16(val: reg, p: buf); |
508 | put_unaligned_be32(val: val << (8 * (4 - len)), p: buf + 2); |
509 | if (i2c_master_send(client, buf, count: len + 2) != len + 2) |
510 | return -EIO; |
511 | |
512 | return 0; |
513 | } |
514 | |
515 | /** |
516 | * ov9282_write_regs() - Write a list of registers |
517 | * @ov9282: pointer to ov9282 device |
518 | * @regs: list of registers to be written |
519 | * @len: length of registers array |
520 | * |
521 | * Return: 0 if successful, error code otherwise. |
522 | */ |
523 | static int ov9282_write_regs(struct ov9282 *ov9282, |
524 | const struct ov9282_reg *regs, u32 len) |
525 | { |
526 | unsigned int i; |
527 | int ret; |
528 | |
529 | for (i = 0; i < len; i++) { |
530 | ret = ov9282_write_reg(ov9282, reg: regs[i].address, len: 1, val: regs[i].val); |
531 | if (ret) |
532 | return ret; |
533 | } |
534 | |
535 | return 0; |
536 | } |
537 | |
538 | /** |
539 | * ov9282_update_controls() - Update control ranges based on streaming mode |
540 | * @ov9282: pointer to ov9282 device |
541 | * @mode: pointer to ov9282_mode sensor mode |
542 | * @fmt: pointer to the requested mode |
543 | * |
544 | * Return: 0 if successful, error code otherwise. |
545 | */ |
546 | static int ov9282_update_controls(struct ov9282 *ov9282, |
547 | const struct ov9282_mode *mode, |
548 | const struct v4l2_subdev_format *fmt) |
549 | { |
550 | u32 hblank_min; |
551 | s64 pixel_rate; |
552 | int ret; |
553 | |
554 | ret = __v4l2_ctrl_s_ctrl(ctrl: ov9282->link_freq_ctrl, val: mode->link_freq_idx); |
555 | if (ret) |
556 | return ret; |
557 | |
558 | pixel_rate = (fmt->format.code == MEDIA_BUS_FMT_Y10_1X10) ? |
559 | OV9282_PIXEL_RATE_10BIT : OV9282_PIXEL_RATE_8BIT; |
560 | ret = __v4l2_ctrl_modify_range(ctrl: ov9282->pixel_rate, min: pixel_rate, |
561 | max: pixel_rate, step: 1, def: pixel_rate); |
562 | if (ret) |
563 | return ret; |
564 | |
565 | hblank_min = mode->hblank_min[ov9282->noncontinuous_clock ? 0 : 1]; |
566 | ret = __v4l2_ctrl_modify_range(ctrl: ov9282->hblank_ctrl, min: hblank_min, |
567 | OV9282_TIMING_HTS_MAX - mode->width, step: 1, |
568 | def: hblank_min); |
569 | if (ret) |
570 | return ret; |
571 | |
572 | return __v4l2_ctrl_modify_range(ctrl: ov9282->vblank_ctrl, min: mode->vblank_min, |
573 | max: mode->vblank_max, step: 1, def: mode->vblank); |
574 | } |
575 | |
576 | /** |
577 | * ov9282_update_exp_gain() - Set updated exposure and gain |
578 | * @ov9282: pointer to ov9282 device |
579 | * @exposure: updated exposure value |
580 | * @gain: updated analog gain value |
581 | * |
582 | * Return: 0 if successful, error code otherwise. |
583 | */ |
584 | static int ov9282_update_exp_gain(struct ov9282 *ov9282, u32 exposure, u32 gain) |
585 | { |
586 | int ret; |
587 | |
588 | dev_dbg(ov9282->dev, "Set exp %u, analog gain %u" , |
589 | exposure, gain); |
590 | |
591 | ret = ov9282_write_reg(ov9282, OV9282_REG_HOLD, len: 1, val: 1); |
592 | if (ret) |
593 | return ret; |
594 | |
595 | ret = ov9282_write_reg(ov9282, OV9282_REG_EXPOSURE, len: 3, val: exposure << 4); |
596 | if (ret) |
597 | goto error_release_group_hold; |
598 | |
599 | ret = ov9282_write_reg(ov9282, OV9282_REG_AGAIN, len: 1, val: gain); |
600 | |
601 | error_release_group_hold: |
602 | ov9282_write_reg(ov9282, OV9282_REG_HOLD, len: 1, val: 0); |
603 | |
604 | return ret; |
605 | } |
606 | |
607 | static int ov9282_set_ctrl_hflip(struct ov9282 *ov9282, int value) |
608 | { |
609 | u32 current_val; |
610 | int ret = ov9282_read_reg(ov9282, OV9282_REG_TIMING_FORMAT_2, len: 1, |
611 | val: ¤t_val); |
612 | if (ret) |
613 | return ret; |
614 | |
615 | if (value) |
616 | current_val |= OV9282_FLIP_BIT; |
617 | else |
618 | current_val &= ~OV9282_FLIP_BIT; |
619 | |
620 | return ov9282_write_reg(ov9282, OV9282_REG_TIMING_FORMAT_2, len: 1, |
621 | val: current_val); |
622 | } |
623 | |
624 | static int ov9282_set_ctrl_vflip(struct ov9282 *ov9282, int value) |
625 | { |
626 | u32 current_val; |
627 | int ret = ov9282_read_reg(ov9282, OV9282_REG_TIMING_FORMAT_1, len: 1, |
628 | val: ¤t_val); |
629 | if (ret) |
630 | return ret; |
631 | |
632 | if (value) |
633 | current_val |= OV9282_FLIP_BIT; |
634 | else |
635 | current_val &= ~OV9282_FLIP_BIT; |
636 | |
637 | return ov9282_write_reg(ov9282, OV9282_REG_TIMING_FORMAT_1, len: 1, |
638 | val: current_val); |
639 | } |
640 | |
641 | /** |
642 | * ov9282_set_ctrl() - Set subdevice control |
643 | * @ctrl: pointer to v4l2_ctrl structure |
644 | * |
645 | * Supported controls: |
646 | * - V4L2_CID_VBLANK |
647 | * - cluster controls: |
648 | * - V4L2_CID_ANALOGUE_GAIN |
649 | * - V4L2_CID_EXPOSURE |
650 | * |
651 | * Return: 0 if successful, error code otherwise. |
652 | */ |
653 | static int ov9282_set_ctrl(struct v4l2_ctrl *ctrl) |
654 | { |
655 | struct ov9282 *ov9282 = |
656 | container_of(ctrl->handler, struct ov9282, ctrl_handler); |
657 | u32 analog_gain; |
658 | u32 exposure; |
659 | u32 lpfr; |
660 | int ret; |
661 | |
662 | switch (ctrl->id) { |
663 | case V4L2_CID_VBLANK: |
664 | ov9282->vblank = ov9282->vblank_ctrl->val; |
665 | |
666 | dev_dbg(ov9282->dev, "Received vblank %u, new lpfr %u" , |
667 | ov9282->vblank, |
668 | ov9282->vblank + ov9282->cur_mode->height); |
669 | |
670 | ret = __v4l2_ctrl_modify_range(ctrl: ov9282->exp_ctrl, |
671 | OV9282_EXPOSURE_MIN, |
672 | max: ov9282->vblank + |
673 | ov9282->cur_mode->height - |
674 | OV9282_EXPOSURE_OFFSET, |
675 | step: 1, OV9282_EXPOSURE_DEFAULT); |
676 | break; |
677 | } |
678 | |
679 | /* Set controls only if sensor is in power on state */ |
680 | if (!pm_runtime_get_if_in_use(dev: ov9282->dev)) |
681 | return 0; |
682 | |
683 | switch (ctrl->id) { |
684 | case V4L2_CID_EXPOSURE: |
685 | exposure = ctrl->val; |
686 | analog_gain = ov9282->again_ctrl->val; |
687 | |
688 | dev_dbg(ov9282->dev, "Received exp %u, analog gain %u" , |
689 | exposure, analog_gain); |
690 | |
691 | ret = ov9282_update_exp_gain(ov9282, exposure, gain: analog_gain); |
692 | break; |
693 | case V4L2_CID_VBLANK: |
694 | lpfr = ov9282->vblank + ov9282->cur_mode->height; |
695 | ret = ov9282_write_reg(ov9282, OV9282_REG_LPFR, len: 2, val: lpfr); |
696 | break; |
697 | case V4L2_CID_HFLIP: |
698 | ret = ov9282_set_ctrl_hflip(ov9282, value: ctrl->val); |
699 | break; |
700 | case V4L2_CID_VFLIP: |
701 | ret = ov9282_set_ctrl_vflip(ov9282, value: ctrl->val); |
702 | break; |
703 | case V4L2_CID_HBLANK: |
704 | ret = ov9282_write_reg(ov9282, OV9282_REG_TIMING_HTS, len: 2, |
705 | val: (ctrl->val + ov9282->cur_mode->width) >> 1); |
706 | break; |
707 | default: |
708 | dev_err(ov9282->dev, "Invalid control %d" , ctrl->id); |
709 | ret = -EINVAL; |
710 | } |
711 | |
712 | pm_runtime_put(dev: ov9282->dev); |
713 | |
714 | return ret; |
715 | } |
716 | |
717 | /* V4l2 subdevice control ops*/ |
718 | static const struct v4l2_ctrl_ops ov9282_ctrl_ops = { |
719 | .s_ctrl = ov9282_set_ctrl, |
720 | }; |
721 | |
722 | /** |
723 | * ov9282_enum_mbus_code() - Enumerate V4L2 sub-device mbus codes |
724 | * @sd: pointer to ov9282 V4L2 sub-device structure |
725 | * @sd_state: V4L2 sub-device configuration |
726 | * @code: V4L2 sub-device code enumeration need to be filled |
727 | * |
728 | * Return: 0 if successful, error code otherwise. |
729 | */ |
730 | static int ov9282_enum_mbus_code(struct v4l2_subdev *sd, |
731 | struct v4l2_subdev_state *sd_state, |
732 | struct v4l2_subdev_mbus_code_enum *code) |
733 | { |
734 | switch (code->index) { |
735 | case 0: |
736 | code->code = MEDIA_BUS_FMT_Y10_1X10; |
737 | break; |
738 | case 1: |
739 | code->code = MEDIA_BUS_FMT_Y8_1X8; |
740 | break; |
741 | default: |
742 | return -EINVAL; |
743 | } |
744 | |
745 | return 0; |
746 | } |
747 | |
748 | /** |
749 | * ov9282_enum_frame_size() - Enumerate V4L2 sub-device frame sizes |
750 | * @sd: pointer to ov9282 V4L2 sub-device structure |
751 | * @sd_state: V4L2 sub-device configuration |
752 | * @fsize: V4L2 sub-device size enumeration need to be filled |
753 | * |
754 | * Return: 0 if successful, error code otherwise. |
755 | */ |
756 | static int ov9282_enum_frame_size(struct v4l2_subdev *sd, |
757 | struct v4l2_subdev_state *sd_state, |
758 | struct v4l2_subdev_frame_size_enum *fsize) |
759 | { |
760 | if (fsize->index >= ARRAY_SIZE(supported_modes)) |
761 | return -EINVAL; |
762 | |
763 | if (fsize->code != MEDIA_BUS_FMT_Y10_1X10 && |
764 | fsize->code != MEDIA_BUS_FMT_Y8_1X8) |
765 | return -EINVAL; |
766 | |
767 | fsize->min_width = supported_modes[fsize->index].width; |
768 | fsize->max_width = fsize->min_width; |
769 | fsize->min_height = supported_modes[fsize->index].height; |
770 | fsize->max_height = fsize->min_height; |
771 | |
772 | return 0; |
773 | } |
774 | |
775 | /** |
776 | * ov9282_fill_pad_format() - Fill subdevice pad format |
777 | * from selected sensor mode |
778 | * @ov9282: pointer to ov9282 device |
779 | * @mode: pointer to ov9282_mode sensor mode |
780 | * @code: mbus code to be stored |
781 | * @fmt: V4L2 sub-device format need to be filled |
782 | */ |
783 | static void ov9282_fill_pad_format(struct ov9282 *ov9282, |
784 | const struct ov9282_mode *mode, |
785 | u32 code, |
786 | struct v4l2_subdev_format *fmt) |
787 | { |
788 | fmt->format.width = mode->width; |
789 | fmt->format.height = mode->height; |
790 | fmt->format.code = code; |
791 | fmt->format.field = V4L2_FIELD_NONE; |
792 | fmt->format.colorspace = V4L2_COLORSPACE_RAW; |
793 | fmt->format.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; |
794 | fmt->format.quantization = V4L2_QUANTIZATION_DEFAULT; |
795 | fmt->format.xfer_func = V4L2_XFER_FUNC_NONE; |
796 | } |
797 | |
798 | /** |
799 | * ov9282_get_pad_format() - Get subdevice pad format |
800 | * @sd: pointer to ov9282 V4L2 sub-device structure |
801 | * @sd_state: V4L2 sub-device configuration |
802 | * @fmt: V4L2 sub-device format need to be set |
803 | * |
804 | * Return: 0 if successful, error code otherwise. |
805 | */ |
806 | static int ov9282_get_pad_format(struct v4l2_subdev *sd, |
807 | struct v4l2_subdev_state *sd_state, |
808 | struct v4l2_subdev_format *fmt) |
809 | { |
810 | struct ov9282 *ov9282 = to_ov9282(subdev: sd); |
811 | |
812 | mutex_lock(&ov9282->mutex); |
813 | |
814 | if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { |
815 | struct v4l2_mbus_framefmt *framefmt; |
816 | |
817 | framefmt = v4l2_subdev_state_get_format(sd_state, fmt->pad); |
818 | fmt->format = *framefmt; |
819 | } else { |
820 | ov9282_fill_pad_format(ov9282, mode: ov9282->cur_mode, code: ov9282->code, |
821 | fmt); |
822 | } |
823 | |
824 | mutex_unlock(lock: &ov9282->mutex); |
825 | |
826 | return 0; |
827 | } |
828 | |
829 | /** |
830 | * ov9282_set_pad_format() - Set subdevice pad format |
831 | * @sd: pointer to ov9282 V4L2 sub-device structure |
832 | * @sd_state: V4L2 sub-device configuration |
833 | * @fmt: V4L2 sub-device format need to be set |
834 | * |
835 | * Return: 0 if successful, error code otherwise. |
836 | */ |
837 | static int ov9282_set_pad_format(struct v4l2_subdev *sd, |
838 | struct v4l2_subdev_state *sd_state, |
839 | struct v4l2_subdev_format *fmt) |
840 | { |
841 | struct ov9282 *ov9282 = to_ov9282(subdev: sd); |
842 | const struct ov9282_mode *mode; |
843 | u32 code; |
844 | int ret = 0; |
845 | |
846 | mutex_lock(&ov9282->mutex); |
847 | |
848 | mode = v4l2_find_nearest_size(supported_modes, |
849 | ARRAY_SIZE(supported_modes), |
850 | width, height, |
851 | fmt->format.width, |
852 | fmt->format.height); |
853 | if (fmt->format.code == MEDIA_BUS_FMT_Y8_1X8) |
854 | code = MEDIA_BUS_FMT_Y8_1X8; |
855 | else |
856 | code = MEDIA_BUS_FMT_Y10_1X10; |
857 | |
858 | ov9282_fill_pad_format(ov9282, mode, code, fmt); |
859 | |
860 | if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { |
861 | struct v4l2_mbus_framefmt *framefmt; |
862 | |
863 | framefmt = v4l2_subdev_state_get_format(sd_state, fmt->pad); |
864 | *framefmt = fmt->format; |
865 | } else { |
866 | ret = ov9282_update_controls(ov9282, mode, fmt); |
867 | if (!ret) { |
868 | ov9282->cur_mode = mode; |
869 | ov9282->code = code; |
870 | } |
871 | } |
872 | |
873 | mutex_unlock(lock: &ov9282->mutex); |
874 | |
875 | return ret; |
876 | } |
877 | |
878 | /** |
879 | * ov9282_init_state() - Initialize sub-device state |
880 | * @sd: pointer to ov9282 V4L2 sub-device structure |
881 | * @sd_state: V4L2 sub-device configuration |
882 | * |
883 | * Return: 0 if successful, error code otherwise. |
884 | */ |
885 | static int ov9282_init_state(struct v4l2_subdev *sd, |
886 | struct v4l2_subdev_state *sd_state) |
887 | { |
888 | struct ov9282 *ov9282 = to_ov9282(subdev: sd); |
889 | struct v4l2_subdev_format fmt = { 0 }; |
890 | |
891 | fmt.which = sd_state ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE; |
892 | ov9282_fill_pad_format(ov9282, mode: &supported_modes[DEFAULT_MODE], |
893 | code: ov9282->code, fmt: &fmt); |
894 | |
895 | return ov9282_set_pad_format(sd, sd_state, fmt: &fmt); |
896 | } |
897 | |
898 | static const struct v4l2_rect * |
899 | __ov9282_get_pad_crop(struct ov9282 *ov9282, |
900 | struct v4l2_subdev_state *sd_state, |
901 | unsigned int pad, enum v4l2_subdev_format_whence which) |
902 | { |
903 | switch (which) { |
904 | case V4L2_SUBDEV_FORMAT_TRY: |
905 | return v4l2_subdev_state_get_crop(sd_state, pad); |
906 | case V4L2_SUBDEV_FORMAT_ACTIVE: |
907 | return &ov9282->cur_mode->crop; |
908 | } |
909 | |
910 | return NULL; |
911 | } |
912 | |
913 | static int ov9282_get_selection(struct v4l2_subdev *sd, |
914 | struct v4l2_subdev_state *sd_state, |
915 | struct v4l2_subdev_selection *sel) |
916 | { |
917 | switch (sel->target) { |
918 | case V4L2_SEL_TGT_CROP: { |
919 | struct ov9282 *ov9282 = to_ov9282(subdev: sd); |
920 | |
921 | mutex_lock(&ov9282->mutex); |
922 | sel->r = *__ov9282_get_pad_crop(ov9282, sd_state, pad: sel->pad, |
923 | which: sel->which); |
924 | mutex_unlock(lock: &ov9282->mutex); |
925 | |
926 | return 0; |
927 | } |
928 | |
929 | case V4L2_SEL_TGT_NATIVE_SIZE: |
930 | sel->r.top = 0; |
931 | sel->r.left = 0; |
932 | sel->r.width = OV9282_NATIVE_WIDTH; |
933 | sel->r.height = OV9282_NATIVE_HEIGHT; |
934 | |
935 | return 0; |
936 | |
937 | case V4L2_SEL_TGT_CROP_DEFAULT: |
938 | case V4L2_SEL_TGT_CROP_BOUNDS: |
939 | sel->r.top = OV9282_PIXEL_ARRAY_TOP; |
940 | sel->r.left = OV9282_PIXEL_ARRAY_LEFT; |
941 | sel->r.width = OV9282_PIXEL_ARRAY_WIDTH; |
942 | sel->r.height = OV9282_PIXEL_ARRAY_HEIGHT; |
943 | |
944 | return 0; |
945 | } |
946 | |
947 | return -EINVAL; |
948 | } |
949 | |
950 | /** |
951 | * ov9282_start_streaming() - Start sensor stream |
952 | * @ov9282: pointer to ov9282 device |
953 | * |
954 | * Return: 0 if successful, error code otherwise. |
955 | */ |
956 | static int ov9282_start_streaming(struct ov9282 *ov9282) |
957 | { |
958 | const struct ov9282_reg bitdepth_regs[2][2] = { |
959 | { |
960 | {OV9282_REG_PLL_CTRL_0D, OV9282_PLL_CTRL_0D_RAW10}, |
961 | {OV9282_REG_ANA_CORE_2, OV9282_ANA_CORE2_RAW10}, |
962 | }, { |
963 | {OV9282_REG_PLL_CTRL_0D, OV9282_PLL_CTRL_0D_RAW8}, |
964 | {OV9282_REG_ANA_CORE_2, OV9282_ANA_CORE2_RAW8}, |
965 | } |
966 | }; |
967 | const struct ov9282_reg_list *reg_list; |
968 | int bitdepth_index; |
969 | int ret; |
970 | |
971 | /* Write common registers */ |
972 | ret = ov9282_write_regs(ov9282, regs: common_regs_list.regs, |
973 | len: common_regs_list.num_of_regs); |
974 | if (ret) { |
975 | dev_err(ov9282->dev, "fail to write common registers" ); |
976 | return ret; |
977 | } |
978 | |
979 | bitdepth_index = ov9282->code == MEDIA_BUS_FMT_Y10_1X10 ? 0 : 1; |
980 | ret = ov9282_write_regs(ov9282, regs: bitdepth_regs[bitdepth_index], len: 2); |
981 | if (ret) { |
982 | dev_err(ov9282->dev, "fail to write bitdepth regs" ); |
983 | return ret; |
984 | } |
985 | |
986 | /* Write sensor mode registers */ |
987 | reg_list = &ov9282->cur_mode->reg_list; |
988 | ret = ov9282_write_regs(ov9282, regs: reg_list->regs, len: reg_list->num_of_regs); |
989 | if (ret) { |
990 | dev_err(ov9282->dev, "fail to write initial registers" ); |
991 | return ret; |
992 | } |
993 | |
994 | /* Setup handler will write actual exposure and gain */ |
995 | ret = __v4l2_ctrl_handler_setup(hdl: ov9282->sd.ctrl_handler); |
996 | if (ret) { |
997 | dev_err(ov9282->dev, "fail to setup handler" ); |
998 | return ret; |
999 | } |
1000 | |
1001 | /* Start streaming */ |
1002 | ret = ov9282_write_reg(ov9282, OV9282_REG_MODE_SELECT, |
1003 | len: 1, OV9282_MODE_STREAMING); |
1004 | if (ret) { |
1005 | dev_err(ov9282->dev, "fail to start streaming" ); |
1006 | return ret; |
1007 | } |
1008 | |
1009 | return 0; |
1010 | } |
1011 | |
1012 | /** |
1013 | * ov9282_stop_streaming() - Stop sensor stream |
1014 | * @ov9282: pointer to ov9282 device |
1015 | * |
1016 | * Return: 0 if successful, error code otherwise. |
1017 | */ |
1018 | static int ov9282_stop_streaming(struct ov9282 *ov9282) |
1019 | { |
1020 | return ov9282_write_reg(ov9282, OV9282_REG_MODE_SELECT, |
1021 | len: 1, OV9282_MODE_STANDBY); |
1022 | } |
1023 | |
1024 | /** |
1025 | * ov9282_set_stream() - Enable sensor streaming |
1026 | * @sd: pointer to ov9282 subdevice |
1027 | * @enable: set to enable sensor streaming |
1028 | * |
1029 | * Return: 0 if successful, error code otherwise. |
1030 | */ |
1031 | static int ov9282_set_stream(struct v4l2_subdev *sd, int enable) |
1032 | { |
1033 | struct ov9282 *ov9282 = to_ov9282(subdev: sd); |
1034 | int ret; |
1035 | |
1036 | mutex_lock(&ov9282->mutex); |
1037 | |
1038 | if (enable) { |
1039 | ret = pm_runtime_resume_and_get(dev: ov9282->dev); |
1040 | if (ret) |
1041 | goto error_unlock; |
1042 | |
1043 | ret = ov9282_start_streaming(ov9282); |
1044 | if (ret) |
1045 | goto error_power_off; |
1046 | } else { |
1047 | ov9282_stop_streaming(ov9282); |
1048 | pm_runtime_put(dev: ov9282->dev); |
1049 | } |
1050 | |
1051 | mutex_unlock(lock: &ov9282->mutex); |
1052 | |
1053 | return 0; |
1054 | |
1055 | error_power_off: |
1056 | pm_runtime_put(dev: ov9282->dev); |
1057 | error_unlock: |
1058 | mutex_unlock(lock: &ov9282->mutex); |
1059 | |
1060 | return ret; |
1061 | } |
1062 | |
1063 | /** |
1064 | * ov9282_detect() - Detect ov9282 sensor |
1065 | * @ov9282: pointer to ov9282 device |
1066 | * |
1067 | * Return: 0 if successful, -EIO if sensor id does not match |
1068 | */ |
1069 | static int ov9282_detect(struct ov9282 *ov9282) |
1070 | { |
1071 | int ret; |
1072 | u32 val; |
1073 | |
1074 | ret = ov9282_read_reg(ov9282, OV9282_REG_ID, len: 2, val: &val); |
1075 | if (ret) |
1076 | return ret; |
1077 | |
1078 | if (val != OV9282_ID) { |
1079 | dev_err(ov9282->dev, "chip id mismatch: %x!=%x" , |
1080 | OV9282_ID, val); |
1081 | return -ENXIO; |
1082 | } |
1083 | |
1084 | return 0; |
1085 | } |
1086 | |
1087 | static int ov9282_configure_regulators(struct ov9282 *ov9282) |
1088 | { |
1089 | unsigned int i; |
1090 | |
1091 | for (i = 0; i < OV9282_NUM_SUPPLIES; i++) |
1092 | ov9282->supplies[i].supply = ov9282_supply_names[i]; |
1093 | |
1094 | return devm_regulator_bulk_get(dev: ov9282->dev, |
1095 | OV9282_NUM_SUPPLIES, |
1096 | consumers: ov9282->supplies); |
1097 | } |
1098 | |
1099 | /** |
1100 | * ov9282_parse_hw_config() - Parse HW configuration and check if supported |
1101 | * @ov9282: pointer to ov9282 device |
1102 | * |
1103 | * Return: 0 if successful, error code otherwise. |
1104 | */ |
1105 | static int ov9282_parse_hw_config(struct ov9282 *ov9282) |
1106 | { |
1107 | struct fwnode_handle *fwnode = dev_fwnode(ov9282->dev); |
1108 | struct v4l2_fwnode_endpoint bus_cfg = { |
1109 | .bus_type = V4L2_MBUS_CSI2_DPHY |
1110 | }; |
1111 | struct fwnode_handle *ep; |
1112 | unsigned long rate; |
1113 | unsigned int i; |
1114 | int ret; |
1115 | |
1116 | if (!fwnode) |
1117 | return -ENXIO; |
1118 | |
1119 | /* Request optional reset pin */ |
1120 | ov9282->reset_gpio = devm_gpiod_get_optional(dev: ov9282->dev, con_id: "reset" , |
1121 | flags: GPIOD_OUT_LOW); |
1122 | if (IS_ERR(ptr: ov9282->reset_gpio)) { |
1123 | dev_err(ov9282->dev, "failed to get reset gpio %ld" , |
1124 | PTR_ERR(ov9282->reset_gpio)); |
1125 | return PTR_ERR(ptr: ov9282->reset_gpio); |
1126 | } |
1127 | |
1128 | /* Get sensor input clock */ |
1129 | ov9282->inclk = devm_clk_get(dev: ov9282->dev, NULL); |
1130 | if (IS_ERR(ptr: ov9282->inclk)) { |
1131 | dev_err(ov9282->dev, "could not get inclk" ); |
1132 | return PTR_ERR(ptr: ov9282->inclk); |
1133 | } |
1134 | |
1135 | ret = ov9282_configure_regulators(ov9282); |
1136 | if (ret) |
1137 | return dev_err_probe(dev: ov9282->dev, err: ret, |
1138 | fmt: "Failed to get power regulators\n" ); |
1139 | |
1140 | rate = clk_get_rate(clk: ov9282->inclk); |
1141 | if (rate != OV9282_INCLK_RATE) { |
1142 | dev_err(ov9282->dev, "inclk frequency mismatch" ); |
1143 | return -EINVAL; |
1144 | } |
1145 | |
1146 | ep = fwnode_graph_get_next_endpoint(fwnode, NULL); |
1147 | if (!ep) |
1148 | return -ENXIO; |
1149 | |
1150 | ret = v4l2_fwnode_endpoint_alloc_parse(fwnode: ep, vep: &bus_cfg); |
1151 | fwnode_handle_put(fwnode: ep); |
1152 | if (ret) |
1153 | return ret; |
1154 | |
1155 | ov9282->noncontinuous_clock = |
1156 | bus_cfg.bus.mipi_csi2.flags & V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK; |
1157 | |
1158 | if (bus_cfg.bus.mipi_csi2.num_data_lanes != OV9282_NUM_DATA_LANES) { |
1159 | dev_err(ov9282->dev, |
1160 | "number of CSI2 data lanes %d is not supported" , |
1161 | bus_cfg.bus.mipi_csi2.num_data_lanes); |
1162 | ret = -EINVAL; |
1163 | goto done_endpoint_free; |
1164 | } |
1165 | |
1166 | if (!bus_cfg.nr_of_link_frequencies) { |
1167 | dev_err(ov9282->dev, "no link frequencies defined" ); |
1168 | ret = -EINVAL; |
1169 | goto done_endpoint_free; |
1170 | } |
1171 | |
1172 | for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++) |
1173 | if (bus_cfg.link_frequencies[i] == OV9282_LINK_FREQ) |
1174 | goto done_endpoint_free; |
1175 | |
1176 | ret = -EINVAL; |
1177 | |
1178 | done_endpoint_free: |
1179 | v4l2_fwnode_endpoint_free(vep: &bus_cfg); |
1180 | |
1181 | return ret; |
1182 | } |
1183 | |
1184 | /* V4l2 subdevice ops */ |
1185 | static const struct v4l2_subdev_core_ops ov9282_core_ops = { |
1186 | .subscribe_event = v4l2_ctrl_subdev_subscribe_event, |
1187 | .unsubscribe_event = v4l2_event_subdev_unsubscribe, |
1188 | }; |
1189 | |
1190 | static const struct v4l2_subdev_video_ops ov9282_video_ops = { |
1191 | .s_stream = ov9282_set_stream, |
1192 | }; |
1193 | |
1194 | static const struct v4l2_subdev_pad_ops ov9282_pad_ops = { |
1195 | .enum_mbus_code = ov9282_enum_mbus_code, |
1196 | .enum_frame_size = ov9282_enum_frame_size, |
1197 | .get_fmt = ov9282_get_pad_format, |
1198 | .set_fmt = ov9282_set_pad_format, |
1199 | .get_selection = ov9282_get_selection, |
1200 | }; |
1201 | |
1202 | static const struct v4l2_subdev_ops ov9282_subdev_ops = { |
1203 | .core = &ov9282_core_ops, |
1204 | .video = &ov9282_video_ops, |
1205 | .pad = &ov9282_pad_ops, |
1206 | }; |
1207 | |
1208 | static const struct v4l2_subdev_internal_ops ov9282_internal_ops = { |
1209 | .init_state = ov9282_init_state, |
1210 | }; |
1211 | |
1212 | /** |
1213 | * ov9282_power_on() - Sensor power on sequence |
1214 | * @dev: pointer to i2c device |
1215 | * |
1216 | * Return: 0 if successful, error code otherwise. |
1217 | */ |
1218 | static int ov9282_power_on(struct device *dev) |
1219 | { |
1220 | struct v4l2_subdev *sd = dev_get_drvdata(dev); |
1221 | struct ov9282 *ov9282 = to_ov9282(subdev: sd); |
1222 | int ret; |
1223 | |
1224 | ret = regulator_bulk_enable(OV9282_NUM_SUPPLIES, consumers: ov9282->supplies); |
1225 | if (ret < 0) { |
1226 | dev_err(dev, "Failed to enable regulators\n" ); |
1227 | return ret; |
1228 | } |
1229 | |
1230 | usleep_range(min: 400, max: 600); |
1231 | |
1232 | gpiod_set_value_cansleep(desc: ov9282->reset_gpio, value: 1); |
1233 | |
1234 | ret = clk_prepare_enable(clk: ov9282->inclk); |
1235 | if (ret) { |
1236 | dev_err(ov9282->dev, "fail to enable inclk" ); |
1237 | goto error_reset; |
1238 | } |
1239 | |
1240 | usleep_range(min: 400, max: 600); |
1241 | |
1242 | ret = ov9282_write_reg(ov9282, OV9282_REG_MIPI_CTRL00, len: 1, |
1243 | val: ov9282->noncontinuous_clock ? |
1244 | OV9282_GATED_CLOCK : 0); |
1245 | if (ret) { |
1246 | dev_err(ov9282->dev, "fail to write MIPI_CTRL00" ); |
1247 | goto error_clk; |
1248 | } |
1249 | |
1250 | return 0; |
1251 | |
1252 | error_clk: |
1253 | clk_disable_unprepare(clk: ov9282->inclk); |
1254 | error_reset: |
1255 | gpiod_set_value_cansleep(desc: ov9282->reset_gpio, value: 0); |
1256 | |
1257 | regulator_bulk_disable(OV9282_NUM_SUPPLIES, consumers: ov9282->supplies); |
1258 | |
1259 | return ret; |
1260 | } |
1261 | |
1262 | /** |
1263 | * ov9282_power_off() - Sensor power off sequence |
1264 | * @dev: pointer to i2c device |
1265 | * |
1266 | * Return: 0 if successful, error code otherwise. |
1267 | */ |
1268 | static int ov9282_power_off(struct device *dev) |
1269 | { |
1270 | struct v4l2_subdev *sd = dev_get_drvdata(dev); |
1271 | struct ov9282 *ov9282 = to_ov9282(subdev: sd); |
1272 | |
1273 | gpiod_set_value_cansleep(desc: ov9282->reset_gpio, value: 0); |
1274 | |
1275 | clk_disable_unprepare(clk: ov9282->inclk); |
1276 | |
1277 | regulator_bulk_disable(OV9282_NUM_SUPPLIES, consumers: ov9282->supplies); |
1278 | |
1279 | return 0; |
1280 | } |
1281 | |
1282 | /** |
1283 | * ov9282_init_controls() - Initialize sensor subdevice controls |
1284 | * @ov9282: pointer to ov9282 device |
1285 | * |
1286 | * Return: 0 if successful, error code otherwise. |
1287 | */ |
1288 | static int ov9282_init_controls(struct ov9282 *ov9282) |
1289 | { |
1290 | struct v4l2_ctrl_handler *ctrl_hdlr = &ov9282->ctrl_handler; |
1291 | const struct ov9282_mode *mode = ov9282->cur_mode; |
1292 | struct v4l2_fwnode_device_properties props; |
1293 | u32 hblank_min; |
1294 | u32 lpfr; |
1295 | int ret; |
1296 | |
1297 | ret = v4l2_ctrl_handler_init(ctrl_hdlr, 10); |
1298 | if (ret) |
1299 | return ret; |
1300 | |
1301 | /* Serialize controls with sensor device */ |
1302 | ctrl_hdlr->lock = &ov9282->mutex; |
1303 | |
1304 | /* Initialize exposure and gain */ |
1305 | lpfr = mode->vblank + mode->height; |
1306 | ov9282->exp_ctrl = v4l2_ctrl_new_std(hdl: ctrl_hdlr, |
1307 | ops: &ov9282_ctrl_ops, |
1308 | V4L2_CID_EXPOSURE, |
1309 | OV9282_EXPOSURE_MIN, |
1310 | max: lpfr - OV9282_EXPOSURE_OFFSET, |
1311 | OV9282_EXPOSURE_STEP, |
1312 | OV9282_EXPOSURE_DEFAULT); |
1313 | |
1314 | ov9282->again_ctrl = v4l2_ctrl_new_std(hdl: ctrl_hdlr, |
1315 | ops: &ov9282_ctrl_ops, |
1316 | V4L2_CID_ANALOGUE_GAIN, |
1317 | OV9282_AGAIN_MIN, |
1318 | OV9282_AGAIN_MAX, |
1319 | OV9282_AGAIN_STEP, |
1320 | OV9282_AGAIN_DEFAULT); |
1321 | |
1322 | v4l2_ctrl_cluster(ncontrols: 2, controls: &ov9282->exp_ctrl); |
1323 | |
1324 | ov9282->vblank_ctrl = v4l2_ctrl_new_std(hdl: ctrl_hdlr, |
1325 | ops: &ov9282_ctrl_ops, |
1326 | V4L2_CID_VBLANK, |
1327 | min: mode->vblank_min, |
1328 | max: mode->vblank_max, |
1329 | step: 1, def: mode->vblank); |
1330 | |
1331 | v4l2_ctrl_new_std(hdl: ctrl_hdlr, ops: &ov9282_ctrl_ops, V4L2_CID_VFLIP, |
1332 | min: 0, max: 1, step: 1, def: 1); |
1333 | |
1334 | v4l2_ctrl_new_std(hdl: ctrl_hdlr, ops: &ov9282_ctrl_ops, V4L2_CID_HFLIP, |
1335 | min: 0, max: 1, step: 1, def: 1); |
1336 | |
1337 | /* Read only controls */ |
1338 | ov9282->pixel_rate = v4l2_ctrl_new_std(hdl: ctrl_hdlr, ops: &ov9282_ctrl_ops, |
1339 | V4L2_CID_PIXEL_RATE, |
1340 | OV9282_PIXEL_RATE_10BIT, |
1341 | OV9282_PIXEL_RATE_10BIT, step: 1, |
1342 | OV9282_PIXEL_RATE_10BIT); |
1343 | |
1344 | ov9282->link_freq_ctrl = v4l2_ctrl_new_int_menu(hdl: ctrl_hdlr, |
1345 | ops: &ov9282_ctrl_ops, |
1346 | V4L2_CID_LINK_FREQ, |
1347 | ARRAY_SIZE(link_freq) - |
1348 | 1, |
1349 | def: mode->link_freq_idx, |
1350 | qmenu_int: link_freq); |
1351 | if (ov9282->link_freq_ctrl) |
1352 | ov9282->link_freq_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; |
1353 | |
1354 | hblank_min = mode->hblank_min[ov9282->noncontinuous_clock ? 0 : 1]; |
1355 | ov9282->hblank_ctrl = v4l2_ctrl_new_std(hdl: ctrl_hdlr, |
1356 | ops: &ov9282_ctrl_ops, |
1357 | V4L2_CID_HBLANK, |
1358 | min: hblank_min, |
1359 | OV9282_TIMING_HTS_MAX - mode->width, |
1360 | step: 1, def: hblank_min); |
1361 | |
1362 | ret = v4l2_fwnode_device_parse(dev: ov9282->dev, props: &props); |
1363 | if (!ret) { |
1364 | /* Failure sets ctrl_hdlr->error, which we check afterwards anyway */ |
1365 | v4l2_ctrl_new_fwnode_properties(hdl: ctrl_hdlr, ctrl_ops: &ov9282_ctrl_ops, |
1366 | p: &props); |
1367 | } |
1368 | |
1369 | if (ctrl_hdlr->error || ret) { |
1370 | dev_err(ov9282->dev, "control init failed: %d" , |
1371 | ctrl_hdlr->error); |
1372 | v4l2_ctrl_handler_free(hdl: ctrl_hdlr); |
1373 | return ctrl_hdlr->error; |
1374 | } |
1375 | |
1376 | ov9282->sd.ctrl_handler = ctrl_hdlr; |
1377 | |
1378 | return 0; |
1379 | } |
1380 | |
1381 | /** |
1382 | * ov9282_probe() - I2C client device binding |
1383 | * @client: pointer to i2c client device |
1384 | * |
1385 | * Return: 0 if successful, error code otherwise. |
1386 | */ |
1387 | static int ov9282_probe(struct i2c_client *client) |
1388 | { |
1389 | struct ov9282 *ov9282; |
1390 | int ret; |
1391 | |
1392 | ov9282 = devm_kzalloc(dev: &client->dev, size: sizeof(*ov9282), GFP_KERNEL); |
1393 | if (!ov9282) |
1394 | return -ENOMEM; |
1395 | |
1396 | ov9282->dev = &client->dev; |
1397 | |
1398 | /* Initialize subdev */ |
1399 | v4l2_i2c_subdev_init(sd: &ov9282->sd, client, ops: &ov9282_subdev_ops); |
1400 | ov9282->sd.internal_ops = &ov9282_internal_ops; |
1401 | v4l2_i2c_subdev_set_name(sd: &ov9282->sd, client, |
1402 | devname: device_get_match_data(dev: ov9282->dev), NULL); |
1403 | |
1404 | ret = ov9282_parse_hw_config(ov9282); |
1405 | if (ret) { |
1406 | dev_err(ov9282->dev, "HW configuration is not supported" ); |
1407 | return ret; |
1408 | } |
1409 | |
1410 | mutex_init(&ov9282->mutex); |
1411 | |
1412 | ret = ov9282_power_on(dev: ov9282->dev); |
1413 | if (ret) { |
1414 | dev_err(ov9282->dev, "failed to power-on the sensor" ); |
1415 | goto error_mutex_destroy; |
1416 | } |
1417 | |
1418 | /* Check module identity */ |
1419 | ret = ov9282_detect(ov9282); |
1420 | if (ret) { |
1421 | dev_err(ov9282->dev, "failed to find sensor: %d" , ret); |
1422 | goto error_power_off; |
1423 | } |
1424 | |
1425 | /* Set default mode to first mode */ |
1426 | ov9282->cur_mode = &supported_modes[DEFAULT_MODE]; |
1427 | ov9282->code = MEDIA_BUS_FMT_Y10_1X10; |
1428 | ov9282->vblank = ov9282->cur_mode->vblank; |
1429 | |
1430 | ret = ov9282_init_controls(ov9282); |
1431 | if (ret) { |
1432 | dev_err(ov9282->dev, "failed to init controls: %d" , ret); |
1433 | goto error_power_off; |
1434 | } |
1435 | |
1436 | /* Initialize subdev */ |
1437 | ov9282->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | |
1438 | V4L2_SUBDEV_FL_HAS_EVENTS; |
1439 | ov9282->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; |
1440 | |
1441 | /* Initialize source pad */ |
1442 | ov9282->pad.flags = MEDIA_PAD_FL_SOURCE; |
1443 | ret = media_entity_pads_init(entity: &ov9282->sd.entity, num_pads: 1, pads: &ov9282->pad); |
1444 | if (ret) { |
1445 | dev_err(ov9282->dev, "failed to init entity pads: %d" , ret); |
1446 | goto error_handler_free; |
1447 | } |
1448 | |
1449 | ret = v4l2_async_register_subdev_sensor(sd: &ov9282->sd); |
1450 | if (ret < 0) { |
1451 | dev_err(ov9282->dev, |
1452 | "failed to register async subdev: %d" , ret); |
1453 | goto error_media_entity; |
1454 | } |
1455 | |
1456 | pm_runtime_set_active(dev: ov9282->dev); |
1457 | pm_runtime_enable(dev: ov9282->dev); |
1458 | pm_runtime_idle(dev: ov9282->dev); |
1459 | |
1460 | return 0; |
1461 | |
1462 | error_media_entity: |
1463 | media_entity_cleanup(entity: &ov9282->sd.entity); |
1464 | error_handler_free: |
1465 | v4l2_ctrl_handler_free(hdl: ov9282->sd.ctrl_handler); |
1466 | error_power_off: |
1467 | ov9282_power_off(dev: ov9282->dev); |
1468 | error_mutex_destroy: |
1469 | mutex_destroy(lock: &ov9282->mutex); |
1470 | |
1471 | return ret; |
1472 | } |
1473 | |
1474 | /** |
1475 | * ov9282_remove() - I2C client device unbinding |
1476 | * @client: pointer to I2C client device |
1477 | * |
1478 | * Return: 0 if successful, error code otherwise. |
1479 | */ |
1480 | static void ov9282_remove(struct i2c_client *client) |
1481 | { |
1482 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
1483 | struct ov9282 *ov9282 = to_ov9282(subdev: sd); |
1484 | |
1485 | v4l2_async_unregister_subdev(sd); |
1486 | media_entity_cleanup(entity: &sd->entity); |
1487 | v4l2_ctrl_handler_free(hdl: sd->ctrl_handler); |
1488 | |
1489 | pm_runtime_disable(dev: &client->dev); |
1490 | if (!pm_runtime_status_suspended(dev: &client->dev)) |
1491 | ov9282_power_off(dev: &client->dev); |
1492 | pm_runtime_set_suspended(dev: &client->dev); |
1493 | |
1494 | mutex_destroy(lock: &ov9282->mutex); |
1495 | } |
1496 | |
1497 | static const struct dev_pm_ops ov9282_pm_ops = { |
1498 | SET_RUNTIME_PM_OPS(ov9282_power_off, ov9282_power_on, NULL) |
1499 | }; |
1500 | |
1501 | static const struct of_device_id ov9282_of_match[] = { |
1502 | { .compatible = "ovti,ov9281" , .data = "ov9281" }, |
1503 | { .compatible = "ovti,ov9282" , .data = "ov9282" }, |
1504 | { } |
1505 | }; |
1506 | |
1507 | MODULE_DEVICE_TABLE(of, ov9282_of_match); |
1508 | |
1509 | static struct i2c_driver ov9282_driver = { |
1510 | .probe = ov9282_probe, |
1511 | .remove = ov9282_remove, |
1512 | .driver = { |
1513 | .name = "ov9282" , |
1514 | .pm = &ov9282_pm_ops, |
1515 | .of_match_table = ov9282_of_match, |
1516 | }, |
1517 | }; |
1518 | |
1519 | module_i2c_driver(ov9282_driver); |
1520 | |
1521 | MODULE_DESCRIPTION("OmniVision ov9282 sensor driver" ); |
1522 | MODULE_LICENSE("GPL" ); |
1523 | |