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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Sony imx334 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
15#include <media/v4l2-ctrls.h>
16#include <media/v4l2-fwnode.h>
17#include <media/v4l2-subdev.h>
18
19/* Streaming Mode */
20#define IMX334_REG_MODE_SELECT 0x3000
21#define IMX334_MODE_STANDBY 0x01
22#define IMX334_MODE_STREAMING 0x00
23
24/* Lines per frame */
25#define IMX334_REG_LPFR 0x3030
26
27/* Chip ID */
28#define IMX334_REG_ID 0x3044
29#define IMX334_ID 0x1e
30
31/* Exposure control */
32#define IMX334_REG_SHUTTER 0x3058
33#define IMX334_EXPOSURE_MIN 1
34#define IMX334_EXPOSURE_OFFSET 5
35#define IMX334_EXPOSURE_STEP 1
36#define IMX334_EXPOSURE_DEFAULT 0x0648
37
38/* Analog gain control */
39#define IMX334_REG_AGAIN 0x30e8
40#define IMX334_AGAIN_MIN 0
41#define IMX334_AGAIN_MAX 240
42#define IMX334_AGAIN_STEP 1
43#define IMX334_AGAIN_DEFAULT 0
44
45/* Group hold register */
46#define IMX334_REG_HOLD 0x3001
47
48/* Input clock rate */
49#define IMX334_INCLK_RATE 24000000
50
51/* CSI2 HW configuration */
52#define IMX334_LINK_FREQ_891M 891000000
53#define IMX334_LINK_FREQ_445M 445500000
54#define IMX334_NUM_DATA_LANES 4
55
56#define IMX334_REG_MIN 0x00
57#define IMX334_REG_MAX 0xfffff
58
59/* Test Pattern Control */
60#define IMX334_REG_TP 0x329e
61#define IMX334_TP_COLOR_HBARS 0xA
62#define IMX334_TP_COLOR_VBARS 0xB
63
64#define IMX334_TPG_EN_DOUT 0x329c
65#define IMX334_TP_ENABLE 0x1
66#define IMX334_TP_DISABLE 0x0
67
68#define IMX334_TPG_COLORW 0x32a0
69#define IMX334_TPG_COLORW_120P 0x13
70
71#define IMX334_TP_CLK_EN 0x3148
72#define IMX334_TP_CLK_EN_VAL 0x10
73#define IMX334_TP_CLK_DIS_VAL 0x0
74
75#define IMX334_DIG_CLP_MODE 0x3280
76
77/**
78 * struct imx334_reg - imx334 sensor register
79 * @address: Register address
80 * @val: Register value
81 */
82struct imx334_reg {
83 u16 address;
84 u8 val;
85};
86
87/**
88 * struct imx334_reg_list - imx334 sensor register list
89 * @num_of_regs: Number of registers in the list
90 * @regs: Pointer to register list
91 */
92struct imx334_reg_list {
93 u32 num_of_regs;
94 const struct imx334_reg *regs;
95};
96
97/**
98 * struct imx334_mode - imx334 sensor mode structure
99 * @width: Frame width
100 * @height: Frame height
101 * @hblank: Horizontal blanking in lines
102 * @vblank: Vertical blanking in lines
103 * @vblank_min: Minimal vertical blanking in lines
104 * @vblank_max: Maximum vertical blanking in lines
105 * @pclk: Sensor pixel clock
106 * @link_freq_idx: Link frequency index
107 * @reg_list: Register list for sensor mode
108 */
109struct imx334_mode {
110 u32 width;
111 u32 height;
112 u32 hblank;
113 u32 vblank;
114 u32 vblank_min;
115 u32 vblank_max;
116 u64 pclk;
117 u32 link_freq_idx;
118 struct imx334_reg_list reg_list;
119};
120
121/**
122 * struct imx334 - imx334 sensor device structure
123 * @dev: Pointer to generic device
124 * @client: Pointer to i2c client
125 * @sd: V4L2 sub-device
126 * @pad: Media pad. Only one pad supported
127 * @reset_gpio: Sensor reset gpio
128 * @inclk: Sensor input clock
129 * @ctrl_handler: V4L2 control handler
130 * @link_freq_ctrl: Pointer to link frequency control
131 * @pclk_ctrl: Pointer to pixel clock control
132 * @hblank_ctrl: Pointer to horizontal blanking control
133 * @vblank_ctrl: Pointer to vertical blanking control
134 * @exp_ctrl: Pointer to exposure control
135 * @again_ctrl: Pointer to analog gain control
136 * @vblank: Vertical blanking in lines
137 * @cur_mode: Pointer to current selected sensor mode
138 * @mutex: Mutex for serializing sensor controls
139 * @menu_skip_mask: Menu skip mask for link_freq_ctrl
140 * @cur_code: current selected format code
141 */
142struct imx334 {
143 struct device *dev;
144 struct i2c_client *client;
145 struct v4l2_subdev sd;
146 struct media_pad pad;
147 struct gpio_desc *reset_gpio;
148 struct clk *inclk;
149 struct v4l2_ctrl_handler ctrl_handler;
150 struct v4l2_ctrl *link_freq_ctrl;
151 struct v4l2_ctrl *pclk_ctrl;
152 struct v4l2_ctrl *hblank_ctrl;
153 struct v4l2_ctrl *vblank_ctrl;
154 struct {
155 struct v4l2_ctrl *exp_ctrl;
156 struct v4l2_ctrl *again_ctrl;
157 };
158 u32 vblank;
159 const struct imx334_mode *cur_mode;
160 struct mutex mutex;
161 unsigned long menu_skip_mask;
162 u32 cur_code;
163};
164
165static const s64 link_freq[] = {
166 IMX334_LINK_FREQ_891M,
167 IMX334_LINK_FREQ_445M,
168};
169
170/* Sensor mode registers for 1920x1080@30fps */
171static const struct imx334_reg mode_1920x1080_regs[] = {
172 {0x3000, 0x01},
173 {0x3018, 0x04},
174 {0x3030, 0xca},
175 {0x3031, 0x08},
176 {0x3032, 0x00},
177 {0x3034, 0x4c},
178 {0x3035, 0x04},
179 {0x302c, 0xf0},
180 {0x302d, 0x03},
181 {0x302e, 0x80},
182 {0x302f, 0x07},
183 {0x3074, 0xcc},
184 {0x3075, 0x02},
185 {0x308e, 0xcd},
186 {0x308f, 0x02},
187 {0x3076, 0x38},
188 {0x3077, 0x04},
189 {0x3090, 0x38},
190 {0x3091, 0x04},
191 {0x3308, 0x38},
192 {0x3309, 0x04},
193 {0x30C6, 0x00},
194 {0x30c7, 0x00},
195 {0x30ce, 0x00},
196 {0x30cf, 0x00},
197 {0x30d8, 0x18},
198 {0x30d9, 0x0a},
199 {0x304c, 0x00},
200 {0x304e, 0x00},
201 {0x304f, 0x00},
202 {0x3050, 0x00},
203 {0x30b6, 0x00},
204 {0x30b7, 0x00},
205 {0x3116, 0x08},
206 {0x3117, 0x00},
207 {0x31a0, 0x20},
208 {0x31a1, 0x0f},
209 {0x300c, 0x3b},
210 {0x300d, 0x29},
211 {0x314c, 0x29},
212 {0x314d, 0x01},
213 {0x315a, 0x06},
214 {0x3168, 0xa0},
215 {0x316a, 0x7e},
216 {0x319e, 0x02},
217 {0x3199, 0x00},
218 {0x319d, 0x00},
219 {0x31dd, 0x03},
220 {0x3300, 0x00},
221 {0x341c, 0xff},
222 {0x341d, 0x01},
223 {0x3a01, 0x03},
224 {0x3a18, 0x7f},
225 {0x3a19, 0x00},
226 {0x3a1a, 0x37},
227 {0x3a1b, 0x00},
228 {0x3a1c, 0x37},
229 {0x3a1d, 0x00},
230 {0x3a1e, 0xf7},
231 {0x3a1f, 0x00},
232 {0x3a20, 0x3f},
233 {0x3a21, 0x00},
234 {0x3a20, 0x6f},
235 {0x3a21, 0x00},
236 {0x3a20, 0x3f},
237 {0x3a21, 0x00},
238 {0x3a20, 0x5f},
239 {0x3a21, 0x00},
240 {0x3a20, 0x2f},
241 {0x3a21, 0x00},
242 {0x3078, 0x02},
243 {0x3079, 0x00},
244 {0x307a, 0x00},
245 {0x307b, 0x00},
246 {0x3080, 0x02},
247 {0x3081, 0x00},
248 {0x3082, 0x00},
249 {0x3083, 0x00},
250 {0x3088, 0x02},
251 {0x3094, 0x00},
252 {0x3095, 0x00},
253 {0x3096, 0x00},
254 {0x309b, 0x02},
255 {0x309c, 0x00},
256 {0x309d, 0x00},
257 {0x309e, 0x00},
258 {0x30a4, 0x00},
259 {0x30a5, 0x00},
260 {0x3288, 0x21},
261 {0x328a, 0x02},
262 {0x3414, 0x05},
263 {0x3416, 0x18},
264 {0x35Ac, 0x0e},
265 {0x3648, 0x01},
266 {0x364a, 0x04},
267 {0x364c, 0x04},
268 {0x3678, 0x01},
269 {0x367c, 0x31},
270 {0x367e, 0x31},
271 {0x3708, 0x02},
272 {0x3714, 0x01},
273 {0x3715, 0x02},
274 {0x3716, 0x02},
275 {0x3717, 0x02},
276 {0x371c, 0x3d},
277 {0x371d, 0x3f},
278 {0x372c, 0x00},
279 {0x372d, 0x00},
280 {0x372e, 0x46},
281 {0x372f, 0x00},
282 {0x3730, 0x89},
283 {0x3731, 0x00},
284 {0x3732, 0x08},
285 {0x3733, 0x01},
286 {0x3734, 0xfe},
287 {0x3735, 0x05},
288 {0x375d, 0x00},
289 {0x375e, 0x00},
290 {0x375f, 0x61},
291 {0x3760, 0x06},
292 {0x3768, 0x1b},
293 {0x3769, 0x1b},
294 {0x376a, 0x1a},
295 {0x376b, 0x19},
296 {0x376c, 0x18},
297 {0x376d, 0x14},
298 {0x376e, 0x0f},
299 {0x3776, 0x00},
300 {0x3777, 0x00},
301 {0x3778, 0x46},
302 {0x3779, 0x00},
303 {0x377a, 0x08},
304 {0x377b, 0x01},
305 {0x377c, 0x45},
306 {0x377d, 0x01},
307 {0x377e, 0x23},
308 {0x377f, 0x02},
309 {0x3780, 0xd9},
310 {0x3781, 0x03},
311 {0x3782, 0xf5},
312 {0x3783, 0x06},
313 {0x3784, 0xa5},
314 {0x3788, 0x0f},
315 {0x378a, 0xd9},
316 {0x378b, 0x03},
317 {0x378c, 0xeb},
318 {0x378d, 0x05},
319 {0x378e, 0x87},
320 {0x378f, 0x06},
321 {0x3790, 0xf5},
322 {0x3792, 0x43},
323 {0x3794, 0x7a},
324 {0x3796, 0xa1},
325 {0x37b0, 0x37},
326 {0x3e04, 0x0e},
327 {0x30e8, 0x50},
328 {0x30e9, 0x00},
329 {0x3e04, 0x0e},
330 {0x3002, 0x00},
331};
332
333/* Sensor mode registers for 3840x2160@30fps */
334static const struct imx334_reg mode_3840x2160_regs[] = {
335 {0x3000, 0x01},
336 {0x3002, 0x00},
337 {0x3018, 0x04},
338 {0x37b0, 0x36},
339 {0x304c, 0x00},
340 {0x300c, 0x3b},
341 {0x300d, 0x2a},
342 {0x3034, 0x26},
343 {0x3035, 0x02},
344 {0x314c, 0x29},
345 {0x314d, 0x01},
346 {0x315a, 0x02},
347 {0x3168, 0xa0},
348 {0x316a, 0x7e},
349 {0x3288, 0x21},
350 {0x328a, 0x02},
351 {0x302c, 0x3c},
352 {0x302d, 0x00},
353 {0x302e, 0x00},
354 {0x302f, 0x0f},
355 {0x3076, 0x70},
356 {0x3077, 0x08},
357 {0x3090, 0x70},
358 {0x3091, 0x08},
359 {0x30d8, 0x20},
360 {0x30d9, 0x12},
361 {0x3308, 0x70},
362 {0x3309, 0x08},
363 {0x3414, 0x05},
364 {0x3416, 0x18},
365 {0x35ac, 0x0e},
366 {0x3648, 0x01},
367 {0x364a, 0x04},
368 {0x364c, 0x04},
369 {0x3678, 0x01},
370 {0x367c, 0x31},
371 {0x367e, 0x31},
372 {0x3708, 0x02},
373 {0x3714, 0x01},
374 {0x3715, 0x02},
375 {0x3716, 0x02},
376 {0x3717, 0x02},
377 {0x371c, 0x3d},
378 {0x371d, 0x3f},
379 {0x372c, 0x00},
380 {0x372d, 0x00},
381 {0x372e, 0x46},
382 {0x372f, 0x00},
383 {0x3730, 0x89},
384 {0x3731, 0x00},
385 {0x3732, 0x08},
386 {0x3733, 0x01},
387 {0x3734, 0xfe},
388 {0x3735, 0x05},
389 {0x375d, 0x00},
390 {0x375e, 0x00},
391 {0x375f, 0x61},
392 {0x3760, 0x06},
393 {0x3768, 0x1b},
394 {0x3769, 0x1b},
395 {0x376a, 0x1a},
396 {0x376b, 0x19},
397 {0x376c, 0x18},
398 {0x376d, 0x14},
399 {0x376e, 0x0f},
400 {0x3776, 0x00},
401 {0x3777, 0x00},
402 {0x3778, 0x46},
403 {0x3779, 0x00},
404 {0x377a, 0x08},
405 {0x377b, 0x01},
406 {0x377c, 0x45},
407 {0x377d, 0x01},
408 {0x377e, 0x23},
409 {0x377f, 0x02},
410 {0x3780, 0xd9},
411 {0x3781, 0x03},
412 {0x3782, 0xf5},
413 {0x3783, 0x06},
414 {0x3784, 0xa5},
415 {0x3788, 0x0f},
416 {0x378a, 0xd9},
417 {0x378b, 0x03},
418 {0x378c, 0xeb},
419 {0x378d, 0x05},
420 {0x378e, 0x87},
421 {0x378f, 0x06},
422 {0x3790, 0xf5},
423 {0x3792, 0x43},
424 {0x3794, 0x7a},
425 {0x3796, 0xa1},
426 {0x3e04, 0x0e},
427 {0x319e, 0x00},
428 {0x3a00, 0x01},
429 {0x3a18, 0xbf},
430 {0x3a19, 0x00},
431 {0x3a1a, 0x67},
432 {0x3a1b, 0x00},
433 {0x3a1c, 0x6f},
434 {0x3a1d, 0x00},
435 {0x3a1e, 0xd7},
436 {0x3a1f, 0x01},
437 {0x3a20, 0x6f},
438 {0x3a21, 0x00},
439 {0x3a22, 0xcf},
440 {0x3a23, 0x00},
441 {0x3a24, 0x6f},
442 {0x3a25, 0x00},
443 {0x3a26, 0xb7},
444 {0x3a27, 0x00},
445 {0x3a28, 0x5f},
446 {0x3a29, 0x00},
447};
448
449static const char * const imx334_test_pattern_menu[] = {
450 "Disabled",
451 "Vertical Color Bars",
452 "Horizontal Color Bars",
453};
454
455static const int imx334_test_pattern_val[] = {
456 IMX334_TP_DISABLE,
457 IMX334_TP_COLOR_HBARS,
458 IMX334_TP_COLOR_VBARS,
459};
460
461static const struct imx334_reg raw10_framefmt_regs[] = {
462 {0x3050, 0x00},
463 {0x319d, 0x00},
464 {0x341c, 0xff},
465 {0x341d, 0x01},
466};
467
468static const struct imx334_reg raw12_framefmt_regs[] = {
469 {0x3050, 0x01},
470 {0x319d, 0x01},
471 {0x341c, 0x47},
472 {0x341d, 0x00},
473};
474
475static const u32 imx334_mbus_codes[] = {
476 MEDIA_BUS_FMT_SRGGB12_1X12,
477 MEDIA_BUS_FMT_SRGGB10_1X10,
478};
479
480/* Supported sensor mode configurations */
481static const struct imx334_mode supported_modes[] = {
482 {
483 .width = 3840,
484 .height = 2160,
485 .hblank = 560,
486 .vblank = 2340,
487 .vblank_min = 90,
488 .vblank_max = 132840,
489 .pclk = 594000000,
490 .link_freq_idx = 0,
491 .reg_list = {
492 .num_of_regs = ARRAY_SIZE(mode_3840x2160_regs),
493 .regs = mode_3840x2160_regs,
494 },
495 }, {
496 .width = 1920,
497 .height = 1080,
498 .hblank = 2480,
499 .vblank = 1170,
500 .vblank_min = 45,
501 .vblank_max = 132840,
502 .pclk = 297000000,
503 .link_freq_idx = 1,
504 .reg_list = {
505 .num_of_regs = ARRAY_SIZE(mode_1920x1080_regs),
506 .regs = mode_1920x1080_regs,
507 },
508 },
509};
510
511/**
512 * to_imx334() - imv334 V4L2 sub-device to imx334 device.
513 * @subdev: pointer to imx334 V4L2 sub-device
514 *
515 * Return: pointer to imx334 device
516 */
517static inline struct imx334 *to_imx334(struct v4l2_subdev *subdev)
518{
519 return container_of(subdev, struct imx334, sd);
520}
521
522/**
523 * imx334_read_reg() - Read registers.
524 * @imx334: pointer to imx334 device
525 * @reg: register address
526 * @len: length of bytes to read. Max supported bytes is 4
527 * @val: pointer to register value to be filled.
528 *
529 * Big endian register addresses with little endian values.
530 *
531 * Return: 0 if successful, error code otherwise.
532 */
533static int imx334_read_reg(struct imx334 *imx334, u16 reg, u32 len, u32 *val)
534{
535 struct i2c_client *client = v4l2_get_subdevdata(&imx334->sd);
536 struct i2c_msg msgs[2] = {0};
537 u8 addr_buf[2] = {0};
538 u8 data_buf[4] = {0};
539 int ret;
540
541 if (WARN_ON(len > 4))
542 return -EINVAL;
543
544 put_unaligned_be16(reg, addr_buf);
545
546 /* Write register address */
547 msgs[0].addr = client->addr;
548 msgs[0].flags = 0;
549 msgs[0].len = ARRAY_SIZE(addr_buf);
550 msgs[0].buf = addr_buf;
551
552 /* Read data from register */
553 msgs[1].addr = client->addr;
554 msgs[1].flags = I2C_M_RD;
555 msgs[1].len = len;
556 msgs[1].buf = data_buf;
557
558 ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
559 if (ret != ARRAY_SIZE(msgs))
560 return -EIO;
561
562 *val = get_unaligned_le32(data_buf);
563
564 return 0;
565}
566
567/**
568 * imx334_write_reg() - Write register
569 * @imx334: pointer to imx334 device
570 * @reg: register address
571 * @len: length of bytes. Max supported bytes is 4
572 * @val: register value
573 *
574 * Big endian register addresses with little endian values.
575 *
576 * Return: 0 if successful, error code otherwise.
577 */
578static int imx334_write_reg(struct imx334 *imx334, u16 reg, u32 len, u32 val)
579{
580 struct i2c_client *client = v4l2_get_subdevdata(&imx334->sd);
581 u8 buf[6] = {0};
582
583 if (WARN_ON(len > 4))
584 return -EINVAL;
585
586 put_unaligned_be16(reg, buf);
587 put_unaligned_le32(val, buf + 2);
588 if (i2c_master_send(client, buf, len + 2) != len + 2)
589 return -EIO;
590
591 return 0;
592}
593
594/**
595 * imx334_write_regs() - Write a list of registers
596 * @imx334: pointer to imx334 device
597 * @regs: list of registers to be written
598 * @len: length of registers array
599 *
600 * Return: 0 if successful, error code otherwise.
601 */
602static int imx334_write_regs(struct imx334 *imx334,
603 const struct imx334_reg *regs, u32 len)
604{
605 unsigned int i;
606 int ret;
607
608 for (i = 0; i < len; i++) {
609 ret = imx334_write_reg(imx334, regs[i].address, 1, regs[i].val);
610 if (ret)
611 return ret;
612 }
613
614 return 0;
615}
616
617/**
618 * imx334_update_controls() - Update control ranges based on streaming mode
619 * @imx334: pointer to imx334 device
620 * @mode: pointer to imx334_mode sensor mode
621 *
622 * Return: 0 if successful, error code otherwise.
623 */
624static int imx334_update_controls(struct imx334 *imx334,
625 const struct imx334_mode *mode)
626{
627 int ret;
628
629 ret = __v4l2_ctrl_s_ctrl(imx334->link_freq_ctrl, mode->link_freq_idx);
630 if (ret)
631 return ret;
632
633 ret = __v4l2_ctrl_modify_range(imx334->pclk_ctrl, mode->pclk,
634 mode->pclk, 1, mode->pclk);
635 if (ret)
636 return ret;
637
638 ret = __v4l2_ctrl_modify_range(imx334->hblank_ctrl, mode->hblank,
639 mode->hblank, 1, mode->hblank);
640 if (ret)
641 return ret;
642
643 ret = __v4l2_ctrl_modify_range(imx334->vblank_ctrl, mode->vblank_min,
644 mode->vblank_max, 1, mode->vblank);
645 if (ret)
646 return ret;
647
648 return __v4l2_ctrl_s_ctrl(imx334->vblank_ctrl, mode->vblank);
649}
650
651/**
652 * imx334_update_exp_gain() - Set updated exposure and gain
653 * @imx334: pointer to imx334 device
654 * @exposure: updated exposure value
655 * @gain: updated analog gain value
656 *
657 * Return: 0 if successful, error code otherwise.
658 */
659static int imx334_update_exp_gain(struct imx334 *imx334, u32 exposure, u32 gain)
660{
661 u32 lpfr, shutter;
662 int ret;
663
664 lpfr = imx334->vblank + imx334->cur_mode->height;
665 shutter = lpfr - exposure;
666
667 dev_dbg(imx334->dev, "Set long exp %u analog gain %u sh0 %u lpfr %u",
668 exposure, gain, shutter, lpfr);
669
670 ret = imx334_write_reg(imx334, IMX334_REG_HOLD, 1, 1);
671 if (ret)
672 return ret;
673
674 ret = imx334_write_reg(imx334, IMX334_REG_LPFR, 3, lpfr);
675 if (ret)
676 goto error_release_group_hold;
677
678 ret = imx334_write_reg(imx334, IMX334_REG_SHUTTER, 3, shutter);
679 if (ret)
680 goto error_release_group_hold;
681
682 ret = imx334_write_reg(imx334, IMX334_REG_AGAIN, 1, gain);
683
684error_release_group_hold:
685 imx334_write_reg(imx334, IMX334_REG_HOLD, 1, 0);
686
687 return ret;
688}
689
690/**
691 * imx334_set_ctrl() - Set subdevice control
692 * @ctrl: pointer to v4l2_ctrl structure
693 *
694 * Supported controls:
695 * - V4L2_CID_VBLANK
696 * - cluster controls:
697 * - V4L2_CID_ANALOGUE_GAIN
698 * - V4L2_CID_EXPOSURE
699 *
700 * Return: 0 if successful, error code otherwise.
701 */
702static int imx334_set_ctrl(struct v4l2_ctrl *ctrl)
703{
704 struct imx334 *imx334 =
705 container_of(ctrl->handler, struct imx334, ctrl_handler);
706 u32 analog_gain;
707 u32 exposure;
708 int ret;
709
710 switch (ctrl->id) {
711 case V4L2_CID_VBLANK:
712 imx334->vblank = imx334->vblank_ctrl->val;
713
714 dev_dbg(imx334->dev, "Received vblank %u, new lpfr %u",
715 imx334->vblank,
716 imx334->vblank + imx334->cur_mode->height);
717
718 ret = __v4l2_ctrl_modify_range(imx334->exp_ctrl,
719 IMX334_EXPOSURE_MIN,
720 imx334->vblank +
721 imx334->cur_mode->height -
722 IMX334_EXPOSURE_OFFSET,
723 1, IMX334_EXPOSURE_DEFAULT);
724 break;
725 case V4L2_CID_EXPOSURE:
726
727 /* Set controls only if sensor is in power on state */
728 if (!pm_runtime_get_if_in_use(imx334->dev))
729 return 0;
730
731 exposure = ctrl->val;
732 analog_gain = imx334->again_ctrl->val;
733
734 dev_dbg(imx334->dev, "Received exp %u analog gain %u",
735 exposure, analog_gain);
736
737 ret = imx334_update_exp_gain(imx334, exposure, analog_gain);
738
739 pm_runtime_put(imx334->dev);
740
741 break;
742 case V4L2_CID_PIXEL_RATE:
743 case V4L2_CID_LINK_FREQ:
744 case V4L2_CID_HBLANK:
745 ret = 0;
746 break;
747 case V4L2_CID_TEST_PATTERN:
748 if (ctrl->val) {
749 imx334_write_reg(imx334, IMX334_TP_CLK_EN, 1,
750 IMX334_TP_CLK_EN_VAL);
751 imx334_write_reg(imx334, IMX334_DIG_CLP_MODE, 1, 0x0);
752 imx334_write_reg(imx334, IMX334_TPG_COLORW, 1,
753 IMX334_TPG_COLORW_120P);
754 imx334_write_reg(imx334, IMX334_REG_TP, 1,
755 imx334_test_pattern_val[ctrl->val]);
756 imx334_write_reg(imx334, IMX334_TPG_EN_DOUT, 1,
757 IMX334_TP_ENABLE);
758 } else {
759 imx334_write_reg(imx334, IMX334_DIG_CLP_MODE, 1, 0x1);
760 imx334_write_reg(imx334, IMX334_TP_CLK_EN, 1,
761 IMX334_TP_CLK_DIS_VAL);
762 imx334_write_reg(imx334, IMX334_TPG_EN_DOUT, 1,
763 IMX334_TP_DISABLE);
764 }
765 ret = 0;
766 break;
767 default:
768 dev_err(imx334->dev, "Invalid control %d", ctrl->id);
769 ret = -EINVAL;
770 }
771
772 return ret;
773}
774
775/* V4l2 subdevice control ops*/
776static const struct v4l2_ctrl_ops imx334_ctrl_ops = {
777 .s_ctrl = imx334_set_ctrl,
778};
779
780static int imx334_get_format_code(struct imx334 *imx334, u32 code)
781{
782 unsigned int i;
783
784 for (i = 0; i < ARRAY_SIZE(imx334_mbus_codes); i++) {
785 if (imx334_mbus_codes[i] == code)
786 return imx334_mbus_codes[i];
787 }
788
789 return imx334_mbus_codes[0];
790}
791
792/**
793 * imx334_enum_mbus_code() - Enumerate V4L2 sub-device mbus codes
794 * @sd: pointer to imx334 V4L2 sub-device structure
795 * @sd_state: V4L2 sub-device state
796 * @code: V4L2 sub-device code enumeration need to be filled
797 *
798 * Return: 0 if successful, error code otherwise.
799 */
800static int imx334_enum_mbus_code(struct v4l2_subdev *sd,
801 struct v4l2_subdev_state *sd_state,
802 struct v4l2_subdev_mbus_code_enum *code)
803{
804 if (code->index >= ARRAY_SIZE(imx334_mbus_codes))
805 return -EINVAL;
806
807 code->code = imx334_mbus_codes[code->index];
808
809 return 0;
810}
811
812/**
813 * imx334_enum_frame_size() - Enumerate V4L2 sub-device frame sizes
814 * @sd: pointer to imx334 V4L2 sub-device structure
815 * @sd_state: V4L2 sub-device state
816 * @fsize: V4L2 sub-device size enumeration need to be filled
817 *
818 * Return: 0 if successful, error code otherwise.
819 */
820static int imx334_enum_frame_size(struct v4l2_subdev *sd,
821 struct v4l2_subdev_state *sd_state,
822 struct v4l2_subdev_frame_size_enum *fsize)
823{
824 struct imx334 *imx334 = to_imx334(sd);
825 u32 code;
826
827 if (fsize->index >= ARRAY_SIZE(supported_modes))
828 return -EINVAL;
829
830 code = imx334_get_format_code(imx334, fsize->code);
831
832 if (fsize->code != code)
833 return -EINVAL;
834
835 fsize->min_width = supported_modes[fsize->index].width;
836 fsize->max_width = fsize->min_width;
837 fsize->min_height = supported_modes[fsize->index].height;
838 fsize->max_height = fsize->min_height;
839
840 return 0;
841}
842
843/**
844 * imx334_fill_pad_format() - Fill subdevice pad format
845 * from selected sensor mode
846 * @imx334: pointer to imx334 device
847 * @mode: pointer to imx334_mode sensor mode
848 * @fmt: V4L2 sub-device format need to be filled
849 */
850static void imx334_fill_pad_format(struct imx334 *imx334,
851 const struct imx334_mode *mode,
852 struct v4l2_subdev_format *fmt)
853{
854 fmt->format.width = mode->width;
855 fmt->format.height = mode->height;
856 fmt->format.field = V4L2_FIELD_NONE;
857 fmt->format.colorspace = V4L2_COLORSPACE_RAW;
858 fmt->format.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
859 fmt->format.quantization = V4L2_QUANTIZATION_DEFAULT;
860 fmt->format.xfer_func = V4L2_XFER_FUNC_NONE;
861}
862
863/**
864 * imx334_get_pad_format() - Get subdevice pad format
865 * @sd: pointer to imx334 V4L2 sub-device structure
866 * @sd_state: V4L2 sub-device state
867 * @fmt: V4L2 sub-device format need to be set
868 *
869 * Return: 0 if successful, error code otherwise.
870 */
871static int imx334_get_pad_format(struct v4l2_subdev *sd,
872 struct v4l2_subdev_state *sd_state,
873 struct v4l2_subdev_format *fmt)
874{
875 struct imx334 *imx334 = to_imx334(sd);
876
877 mutex_lock(&imx334->mutex);
878
879 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
880 struct v4l2_mbus_framefmt *framefmt;
881
882 framefmt = v4l2_subdev_state_get_format(sd_state, fmt->pad);
883 fmt->format = *framefmt;
884 } else {
885 fmt->format.code = imx334->cur_code;
886 imx334_fill_pad_format(imx334, imx334->cur_mode, fmt);
887 }
888
889 mutex_unlock(&imx334->mutex);
890
891 return 0;
892}
893
894/**
895 * imx334_set_pad_format() - Set subdevice pad format
896 * @sd: pointer to imx334 V4L2 sub-device structure
897 * @sd_state: V4L2 sub-device state
898 * @fmt: V4L2 sub-device format need to be set
899 *
900 * Return: 0 if successful, error code otherwise.
901 */
902static int imx334_set_pad_format(struct v4l2_subdev *sd,
903 struct v4l2_subdev_state *sd_state,
904 struct v4l2_subdev_format *fmt)
905{
906 struct imx334 *imx334 = to_imx334(sd);
907 const struct imx334_mode *mode;
908 int ret = 0;
909
910 mutex_lock(&imx334->mutex);
911
912 mode = v4l2_find_nearest_size(supported_modes,
913 ARRAY_SIZE(supported_modes),
914 width, height,
915 fmt->format.width, fmt->format.height);
916
917 imx334_fill_pad_format(imx334, mode, fmt);
918 fmt->format.code = imx334_get_format_code(imx334, fmt->format.code);
919
920 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
921 struct v4l2_mbus_framefmt *framefmt;
922
923 framefmt = v4l2_subdev_state_get_format(sd_state, fmt->pad);
924 *framefmt = fmt->format;
925 } else if (imx334->cur_mode != mode || imx334->cur_code != fmt->format.code) {
926 imx334->cur_code = fmt->format.code;
927 ret = imx334_update_controls(imx334, mode);
928 if (!ret)
929 imx334->cur_mode = mode;
930 }
931
932 mutex_unlock(&imx334->mutex);
933
934 return ret;
935}
936
937/**
938 * imx334_init_state() - Initialize sub-device state
939 * @sd: pointer to imx334 V4L2 sub-device structure
940 * @sd_state: V4L2 sub-device state
941 *
942 * Return: 0 if successful, error code otherwise.
943 */
944static int imx334_init_state(struct v4l2_subdev *sd,
945 struct v4l2_subdev_state *sd_state)
946{
947 struct imx334 *imx334 = to_imx334(sd);
948 struct v4l2_subdev_format fmt = { 0 };
949
950 fmt.which = sd_state ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
951
952 mutex_lock(&imx334->mutex);
953
954 imx334_fill_pad_format(imx334, imx334->cur_mode, &fmt);
955
956 __v4l2_ctrl_modify_range(imx334->link_freq_ctrl, 0,
957 __fls(imx334->menu_skip_mask),
958 ~(imx334->menu_skip_mask),
959 __ffs(imx334->menu_skip_mask));
960
961 mutex_unlock(&imx334->mutex);
962
963 return imx334_set_pad_format(sd, sd_state, &fmt);
964}
965
966static int imx334_set_framefmt(struct imx334 *imx334)
967{
968 switch (imx334->cur_code) {
969 case MEDIA_BUS_FMT_SRGGB10_1X10:
970 return imx334_write_regs(imx334, raw10_framefmt_regs,
971 ARRAY_SIZE(raw10_framefmt_regs));
972
973 case MEDIA_BUS_FMT_SRGGB12_1X12:
974 return imx334_write_regs(imx334, raw12_framefmt_regs,
975 ARRAY_SIZE(raw12_framefmt_regs));
976 }
977
978 return -EINVAL;
979}
980
981/**
982 * imx334_start_streaming() - Start sensor stream
983 * @imx334: pointer to imx334 device
984 *
985 * Return: 0 if successful, error code otherwise.
986 */
987static int imx334_start_streaming(struct imx334 *imx334)
988{
989 const struct imx334_reg_list *reg_list;
990 int ret;
991
992 /* Write sensor mode registers */
993 reg_list = &imx334->cur_mode->reg_list;
994 ret = imx334_write_regs(imx334, reg_list->regs,
995 reg_list->num_of_regs);
996 if (ret) {
997 dev_err(imx334->dev, "fail to write initial registers");
998 return ret;
999 }
1000
1001 ret = imx334_set_framefmt(imx334);
1002 if (ret) {
1003 dev_err(imx334->dev, "%s failed to set frame format: %d\n",
1004 __func__, ret);
1005 return ret;
1006 }
1007
1008 /* Setup handler will write actual exposure and gain */
1009 ret = __v4l2_ctrl_handler_setup(imx334->sd.ctrl_handler);
1010 if (ret) {
1011 dev_err(imx334->dev, "fail to setup handler");
1012 return ret;
1013 }
1014
1015 /* Start streaming */
1016 ret = imx334_write_reg(imx334, IMX334_REG_MODE_SELECT,
1017 1, IMX334_MODE_STREAMING);
1018 if (ret) {
1019 dev_err(imx334->dev, "fail to start streaming");
1020 return ret;
1021 }
1022
1023 return 0;
1024}
1025
1026/**
1027 * imx334_stop_streaming() - Stop sensor stream
1028 * @imx334: pointer to imx334 device
1029 *
1030 * Return: 0 if successful, error code otherwise.
1031 */
1032static int imx334_stop_streaming(struct imx334 *imx334)
1033{
1034 return imx334_write_reg(imx334, IMX334_REG_MODE_SELECT,
1035 1, IMX334_MODE_STANDBY);
1036}
1037
1038/**
1039 * imx334_set_stream() - Enable sensor streaming
1040 * @sd: pointer to imx334 subdevice
1041 * @enable: set to enable sensor streaming
1042 *
1043 * Return: 0 if successful, error code otherwise.
1044 */
1045static int imx334_set_stream(struct v4l2_subdev *sd, int enable)
1046{
1047 struct imx334 *imx334 = to_imx334(sd);
1048 int ret;
1049
1050 mutex_lock(&imx334->mutex);
1051
1052 if (enable) {
1053 ret = pm_runtime_resume_and_get(imx334->dev);
1054 if (ret < 0)
1055 goto error_unlock;
1056
1057 ret = imx334_start_streaming(imx334);
1058 if (ret)
1059 goto error_power_off;
1060 } else {
1061 imx334_stop_streaming(imx334);
1062 pm_runtime_put(imx334->dev);
1063 }
1064
1065 mutex_unlock(&imx334->mutex);
1066
1067 return 0;
1068
1069error_power_off:
1070 pm_runtime_put(imx334->dev);
1071error_unlock:
1072 mutex_unlock(&imx334->mutex);
1073
1074 return ret;
1075}
1076
1077/**
1078 * imx334_detect() - Detect imx334 sensor
1079 * @imx334: pointer to imx334 device
1080 *
1081 * Return: 0 if successful, -EIO if sensor id does not match
1082 */
1083static int imx334_detect(struct imx334 *imx334)
1084{
1085 int ret;
1086 u32 val;
1087
1088 ret = imx334_read_reg(imx334, IMX334_REG_ID, 2, &val);
1089 if (ret)
1090 return ret;
1091
1092 if (val != IMX334_ID) {
1093 dev_err(imx334->dev, "chip id mismatch: %x!=%x",
1094 IMX334_ID, val);
1095 return -ENXIO;
1096 }
1097
1098 return 0;
1099}
1100
1101/**
1102 * imx334_parse_hw_config() - Parse HW configuration and check if supported
1103 * @imx334: pointer to imx334 device
1104 *
1105 * Return: 0 if successful, error code otherwise.
1106 */
1107static int imx334_parse_hw_config(struct imx334 *imx334)
1108{
1109 struct fwnode_handle *fwnode = dev_fwnode(imx334->dev);
1110 struct v4l2_fwnode_endpoint bus_cfg = {
1111 .bus_type = V4L2_MBUS_CSI2_DPHY
1112 };
1113 struct fwnode_handle *ep;
1114 unsigned long rate;
1115 unsigned int i, j;
1116 int ret;
1117
1118 if (!fwnode)
1119 return -ENXIO;
1120
1121 /* Request optional reset pin */
1122 imx334->reset_gpio = devm_gpiod_get_optional(imx334->dev, "reset",
1123 GPIOD_OUT_LOW);
1124 if (IS_ERR(imx334->reset_gpio)) {
1125 dev_err(imx334->dev, "failed to get reset gpio %ld",
1126 PTR_ERR(imx334->reset_gpio));
1127 return PTR_ERR(imx334->reset_gpio);
1128 }
1129
1130 /* Get sensor input clock */
1131 imx334->inclk = devm_clk_get(imx334->dev, NULL);
1132 if (IS_ERR(imx334->inclk)) {
1133 dev_err(imx334->dev, "could not get inclk");
1134 return PTR_ERR(imx334->inclk);
1135 }
1136
1137 rate = clk_get_rate(imx334->inclk);
1138 if (rate != IMX334_INCLK_RATE) {
1139 dev_err(imx334->dev, "inclk frequency mismatch");
1140 return -EINVAL;
1141 }
1142
1143 ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
1144 if (!ep)
1145 return -ENXIO;
1146
1147 ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
1148 fwnode_handle_put(ep);
1149 if (ret)
1150 return ret;
1151
1152 if (bus_cfg.bus.mipi_csi2.num_data_lanes != IMX334_NUM_DATA_LANES) {
1153 dev_err(imx334->dev,
1154 "number of CSI2 data lanes %d is not supported",
1155 bus_cfg.bus.mipi_csi2.num_data_lanes);
1156 ret = -EINVAL;
1157 goto done_endpoint_free;
1158 }
1159
1160 if (!bus_cfg.nr_of_link_frequencies) {
1161 dev_err(imx334->dev, "no link frequencies defined");
1162 ret = -EINVAL;
1163 goto done_endpoint_free;
1164 }
1165
1166 for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++) {
1167 for (j = 0; j < ARRAY_SIZE(link_freq); j++) {
1168 if (bus_cfg.link_frequencies[i] == link_freq[j]) {
1169 set_bit(j, &imx334->menu_skip_mask);
1170 break;
1171 }
1172 }
1173
1174 if (j == ARRAY_SIZE(link_freq)) {
1175 ret = dev_err_probe(imx334->dev, -EINVAL,
1176 "no supported link freq found\n");
1177 goto done_endpoint_free;
1178 }
1179 }
1180
1181done_endpoint_free:
1182 v4l2_fwnode_endpoint_free(&bus_cfg);
1183
1184 return ret;
1185}
1186
1187/* V4l2 subdevice ops */
1188static const struct v4l2_subdev_video_ops imx334_video_ops = {
1189 .s_stream = imx334_set_stream,
1190};
1191
1192static const struct v4l2_subdev_pad_ops imx334_pad_ops = {
1193 .enum_mbus_code = imx334_enum_mbus_code,
1194 .enum_frame_size = imx334_enum_frame_size,
1195 .get_fmt = imx334_get_pad_format,
1196 .set_fmt = imx334_set_pad_format,
1197};
1198
1199static const struct v4l2_subdev_ops imx334_subdev_ops = {
1200 .video = &imx334_video_ops,
1201 .pad = &imx334_pad_ops,
1202};
1203
1204static const struct v4l2_subdev_internal_ops imx334_internal_ops = {
1205 .init_state = imx334_init_state,
1206};
1207
1208/**
1209 * imx334_power_on() - Sensor power on sequence
1210 * @dev: pointer to i2c device
1211 *
1212 * Return: 0 if successful, error code otherwise.
1213 */
1214static int imx334_power_on(struct device *dev)
1215{
1216 struct v4l2_subdev *sd = dev_get_drvdata(dev);
1217 struct imx334 *imx334 = to_imx334(sd);
1218 int ret;
1219
1220 gpiod_set_value_cansleep(imx334->reset_gpio, 1);
1221
1222 ret = clk_prepare_enable(imx334->inclk);
1223 if (ret) {
1224 dev_err(imx334->dev, "fail to enable inclk");
1225 goto error_reset;
1226 }
1227
1228 usleep_range(18000, 20000);
1229
1230 return 0;
1231
1232error_reset:
1233 gpiod_set_value_cansleep(imx334->reset_gpio, 0);
1234
1235 return ret;
1236}
1237
1238/**
1239 * imx334_power_off() - Sensor power off sequence
1240 * @dev: pointer to i2c device
1241 *
1242 * Return: 0 if successful, error code otherwise.
1243 */
1244static int imx334_power_off(struct device *dev)
1245{
1246 struct v4l2_subdev *sd = dev_get_drvdata(dev);
1247 struct imx334 *imx334 = to_imx334(sd);
1248
1249 gpiod_set_value_cansleep(imx334->reset_gpio, 0);
1250
1251 clk_disable_unprepare(imx334->inclk);
1252
1253 return 0;
1254}
1255
1256/**
1257 * imx334_init_controls() - Initialize sensor subdevice controls
1258 * @imx334: pointer to imx334 device
1259 *
1260 * Return: 0 if successful, error code otherwise.
1261 */
1262static int imx334_init_controls(struct imx334 *imx334)
1263{
1264 struct v4l2_ctrl_handler *ctrl_hdlr = &imx334->ctrl_handler;
1265 const struct imx334_mode *mode = imx334->cur_mode;
1266 u32 lpfr;
1267 int ret;
1268
1269 ret = v4l2_ctrl_handler_init(ctrl_hdlr, 7);
1270 if (ret)
1271 return ret;
1272
1273 /* Serialize controls with sensor device */
1274 ctrl_hdlr->lock = &imx334->mutex;
1275
1276 /* Initialize exposure and gain */
1277 lpfr = mode->vblank + mode->height;
1278 imx334->exp_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
1279 &imx334_ctrl_ops,
1280 V4L2_CID_EXPOSURE,
1281 IMX334_EXPOSURE_MIN,
1282 lpfr - IMX334_EXPOSURE_OFFSET,
1283 IMX334_EXPOSURE_STEP,
1284 IMX334_EXPOSURE_DEFAULT);
1285
1286 imx334->again_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
1287 &imx334_ctrl_ops,
1288 V4L2_CID_ANALOGUE_GAIN,
1289 IMX334_AGAIN_MIN,
1290 IMX334_AGAIN_MAX,
1291 IMX334_AGAIN_STEP,
1292 IMX334_AGAIN_DEFAULT);
1293
1294 v4l2_ctrl_cluster(2, &imx334->exp_ctrl);
1295
1296 imx334->vblank_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
1297 &imx334_ctrl_ops,
1298 V4L2_CID_VBLANK,
1299 mode->vblank_min,
1300 mode->vblank_max,
1301 1, mode->vblank);
1302
1303 /* Read only controls */
1304 imx334->pclk_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
1305 &imx334_ctrl_ops,
1306 V4L2_CID_PIXEL_RATE,
1307 mode->pclk, mode->pclk,
1308 1, mode->pclk);
1309
1310 imx334->link_freq_ctrl = v4l2_ctrl_new_int_menu(ctrl_hdlr,
1311 &imx334_ctrl_ops,
1312 V4L2_CID_LINK_FREQ,
1313 __fls(imx334->menu_skip_mask),
1314 __ffs(imx334->menu_skip_mask),
1315 link_freq);
1316
1317 if (imx334->link_freq_ctrl)
1318 imx334->link_freq_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1319
1320 imx334->hblank_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
1321 &imx334_ctrl_ops,
1322 V4L2_CID_HBLANK,
1323 IMX334_REG_MIN,
1324 IMX334_REG_MAX,
1325 1, mode->hblank);
1326 if (imx334->hblank_ctrl)
1327 imx334->hblank_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1328
1329 v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &imx334_ctrl_ops,
1330 V4L2_CID_TEST_PATTERN,
1331 ARRAY_SIZE(imx334_test_pattern_menu) - 1,
1332 0, 0, imx334_test_pattern_menu);
1333
1334 if (ctrl_hdlr->error) {
1335 dev_err(imx334->dev, "control init failed: %d",
1336 ctrl_hdlr->error);
1337 v4l2_ctrl_handler_free(ctrl_hdlr);
1338 return ctrl_hdlr->error;
1339 }
1340
1341 imx334->sd.ctrl_handler = ctrl_hdlr;
1342
1343 return 0;
1344}
1345
1346/**
1347 * imx334_probe() - I2C client device binding
1348 * @client: pointer to i2c client device
1349 *
1350 * Return: 0 if successful, error code otherwise.
1351 */
1352static int imx334_probe(struct i2c_client *client)
1353{
1354 struct imx334 *imx334;
1355 int ret;
1356
1357 imx334 = devm_kzalloc(&client->dev, sizeof(*imx334), GFP_KERNEL);
1358 if (!imx334)
1359 return -ENOMEM;
1360
1361 imx334->dev = &client->dev;
1362
1363 /* Initialize subdev */
1364 v4l2_i2c_subdev_init(&imx334->sd, client, &imx334_subdev_ops);
1365 imx334->sd.internal_ops = &imx334_internal_ops;
1366
1367 ret = imx334_parse_hw_config(imx334);
1368 if (ret) {
1369 dev_err(imx334->dev, "HW configuration is not supported");
1370 return ret;
1371 }
1372
1373 mutex_init(&imx334->mutex);
1374
1375 ret = imx334_power_on(imx334->dev);
1376 if (ret) {
1377 dev_err(imx334->dev, "failed to power-on the sensor");
1378 goto error_mutex_destroy;
1379 }
1380
1381 /* Check module identity */
1382 ret = imx334_detect(imx334);
1383 if (ret) {
1384 dev_err(imx334->dev, "failed to find sensor: %d", ret);
1385 goto error_power_off;
1386 }
1387
1388 /* Set default mode to max resolution */
1389 imx334->cur_mode = &supported_modes[__ffs(imx334->menu_skip_mask)];
1390 imx334->cur_code = imx334_mbus_codes[0];
1391 imx334->vblank = imx334->cur_mode->vblank;
1392
1393 ret = imx334_init_controls(imx334);
1394 if (ret) {
1395 dev_err(imx334->dev, "failed to init controls: %d", ret);
1396 goto error_power_off;
1397 }
1398
1399 /* Initialize subdev */
1400 imx334->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1401 imx334->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
1402
1403 /* Initialize source pad */
1404 imx334->pad.flags = MEDIA_PAD_FL_SOURCE;
1405 ret = media_entity_pads_init(&imx334->sd.entity, 1, &imx334->pad);
1406 if (ret) {
1407 dev_err(imx334->dev, "failed to init entity pads: %d", ret);
1408 goto error_handler_free;
1409 }
1410
1411 ret = v4l2_async_register_subdev_sensor(&imx334->sd);
1412 if (ret < 0) {
1413 dev_err(imx334->dev,
1414 "failed to register async subdev: %d", ret);
1415 goto error_media_entity;
1416 }
1417
1418 pm_runtime_set_active(imx334->dev);
1419 pm_runtime_enable(imx334->dev);
1420 pm_runtime_idle(imx334->dev);
1421
1422 return 0;
1423
1424error_media_entity:
1425 media_entity_cleanup(&imx334->sd.entity);
1426error_handler_free:
1427 v4l2_ctrl_handler_free(imx334->sd.ctrl_handler);
1428error_power_off:
1429 imx334_power_off(imx334->dev);
1430error_mutex_destroy:
1431 mutex_destroy(&imx334->mutex);
1432
1433 return ret;
1434}
1435
1436/**
1437 * imx334_remove() - I2C client device unbinding
1438 * @client: pointer to I2C client device
1439 *
1440 * Return: 0 if successful, error code otherwise.
1441 */
1442static void imx334_remove(struct i2c_client *client)
1443{
1444 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1445 struct imx334 *imx334 = to_imx334(sd);
1446
1447 v4l2_async_unregister_subdev(sd);
1448 media_entity_cleanup(&sd->entity);
1449 v4l2_ctrl_handler_free(sd->ctrl_handler);
1450
1451 pm_runtime_disable(&client->dev);
1452 pm_runtime_suspended(&client->dev);
1453
1454 mutex_destroy(&imx334->mutex);
1455}
1456
1457static const struct dev_pm_ops imx334_pm_ops = {
1458 SET_RUNTIME_PM_OPS(imx334_power_off, imx334_power_on, NULL)
1459};
1460
1461static const struct of_device_id imx334_of_match[] = {
1462 { .compatible = "sony,imx334" },
1463 { }
1464};
1465
1466MODULE_DEVICE_TABLE(of, imx334_of_match);
1467
1468static struct i2c_driver imx334_driver = {
1469 .probe = imx334_probe,
1470 .remove = imx334_remove,
1471 .driver = {
1472 .name = "imx334",
1473 .pm = &imx334_pm_ops,
1474 .of_match_table = imx334_of_match,
1475 },
1476};
1477
1478module_i2c_driver(imx334_driver);
1479
1480MODULE_DESCRIPTION("Sony imx334 sensor driver");
1481MODULE_LICENSE("GPL");