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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * imx214.c - imx214 sensor driver
4 *
5 * Copyright 2018 Qtechnology A/S
6 *
7 * Ricardo Ribalda <ribalda@kernel.org>
8 */
9#include <linux/clk.h>
10#include <linux/delay.h>
11#include <linux/gpio/consumer.h>
12#include <linux/i2c.h>
13#include <linux/module.h>
14#include <linux/pm_runtime.h>
15#include <linux/regmap.h>
16#include <linux/regulator/consumer.h>
17#include <media/media-entity.h>
18#include <media/v4l2-ctrls.h>
19#include <media/v4l2-fwnode.h>
20#include <media/v4l2-subdev.h>
21
22#define IMX214_DEFAULT_CLK_FREQ 24000000
23#define IMX214_DEFAULT_LINK_FREQ 480000000
24#define IMX214_DEFAULT_PIXEL_RATE ((IMX214_DEFAULT_LINK_FREQ * 8LL) / 10)
25#define IMX214_FPS 30
26#define IMX214_MBUS_CODE MEDIA_BUS_FMT_SRGGB10_1X10
27
28static const char * const imx214_supply_name[] = {
29 "vdda",
30 "vddd",
31 "vdddo",
32};
33
34#define IMX214_NUM_SUPPLIES ARRAY_SIZE(imx214_supply_name)
35
36struct imx214 {
37 struct device *dev;
38 struct clk *xclk;
39 struct regmap *regmap;
40
41 struct v4l2_subdev sd;
42 struct media_pad pad;
43 struct v4l2_mbus_framefmt fmt;
44 struct v4l2_rect crop;
45
46 struct v4l2_ctrl_handler ctrls;
47 struct v4l2_ctrl *pixel_rate;
48 struct v4l2_ctrl *link_freq;
49 struct v4l2_ctrl *exposure;
50 struct v4l2_ctrl *unit_size;
51
52 struct regulator_bulk_data supplies[IMX214_NUM_SUPPLIES];
53
54 struct gpio_desc *enable_gpio;
55
56 /*
57 * Serialize control access, get/set format, get selection
58 * and start streaming.
59 */
60 struct mutex mutex;
61
62 bool streaming;
63};
64
65struct reg_8 {
66 u16 addr;
67 u8 val;
68};
69
70enum {
71 IMX214_TABLE_WAIT_MS = 0,
72 IMX214_TABLE_END,
73 IMX214_MAX_RETRIES,
74 IMX214_WAIT_MS
75};
76
77/*From imx214_mode_tbls.h*/
78static const struct reg_8 mode_4096x2304[] = {
79 {0x0114, 0x03},
80 {0x0220, 0x00},
81 {0x0221, 0x11},
82 {0x0222, 0x01},
83 {0x0340, 0x0C},
84 {0x0341, 0x7A},
85 {0x0342, 0x13},
86 {0x0343, 0x90},
87 {0x0344, 0x00},
88 {0x0345, 0x38},
89 {0x0346, 0x01},
90 {0x0347, 0x98},
91 {0x0348, 0x10},
92 {0x0349, 0x37},
93 {0x034A, 0x0A},
94 {0x034B, 0x97},
95 {0x0381, 0x01},
96 {0x0383, 0x01},
97 {0x0385, 0x01},
98 {0x0387, 0x01},
99 {0x0900, 0x00},
100 {0x0901, 0x00},
101 {0x0902, 0x00},
102 {0x3000, 0x35},
103 {0x3054, 0x01},
104 {0x305C, 0x11},
105
106 {0x0112, 0x0A},
107 {0x0113, 0x0A},
108 {0x034C, 0x10},
109 {0x034D, 0x00},
110 {0x034E, 0x09},
111 {0x034F, 0x00},
112 {0x0401, 0x00},
113 {0x0404, 0x00},
114 {0x0405, 0x10},
115 {0x0408, 0x00},
116 {0x0409, 0x00},
117 {0x040A, 0x00},
118 {0x040B, 0x00},
119 {0x040C, 0x10},
120 {0x040D, 0x00},
121 {0x040E, 0x09},
122 {0x040F, 0x00},
123
124 {0x0301, 0x05},
125 {0x0303, 0x02},
126 {0x0305, 0x03},
127 {0x0306, 0x00},
128 {0x0307, 0x96},
129 {0x0309, 0x0A},
130 {0x030B, 0x01},
131 {0x0310, 0x00},
132
133 {0x0820, 0x12},
134 {0x0821, 0xC0},
135 {0x0822, 0x00},
136 {0x0823, 0x00},
137
138 {0x3A03, 0x09},
139 {0x3A04, 0x50},
140 {0x3A05, 0x01},
141
142 {0x0B06, 0x01},
143 {0x30A2, 0x00},
144
145 {0x30B4, 0x00},
146
147 {0x3A02, 0xFF},
148
149 {0x3011, 0x00},
150 {0x3013, 0x01},
151
152 {0x0202, 0x0C},
153 {0x0203, 0x70},
154 {0x0224, 0x01},
155 {0x0225, 0xF4},
156
157 {0x0204, 0x00},
158 {0x0205, 0x00},
159 {0x020E, 0x01},
160 {0x020F, 0x00},
161 {0x0210, 0x01},
162 {0x0211, 0x00},
163 {0x0212, 0x01},
164 {0x0213, 0x00},
165 {0x0214, 0x01},
166 {0x0215, 0x00},
167 {0x0216, 0x00},
168 {0x0217, 0x00},
169
170 {0x4170, 0x00},
171 {0x4171, 0x10},
172 {0x4176, 0x00},
173 {0x4177, 0x3C},
174 {0xAE20, 0x04},
175 {0xAE21, 0x5C},
176
177 {IMX214_TABLE_WAIT_MS, 10},
178 {0x0138, 0x01},
179 {IMX214_TABLE_END, 0x00}
180};
181
182static const struct reg_8 mode_1920x1080[] = {
183 {0x0114, 0x03},
184 {0x0220, 0x00},
185 {0x0221, 0x11},
186 {0x0222, 0x01},
187 {0x0340, 0x0C},
188 {0x0341, 0x7A},
189 {0x0342, 0x13},
190 {0x0343, 0x90},
191 {0x0344, 0x04},
192 {0x0345, 0x78},
193 {0x0346, 0x03},
194 {0x0347, 0xFC},
195 {0x0348, 0x0B},
196 {0x0349, 0xF7},
197 {0x034A, 0x08},
198 {0x034B, 0x33},
199 {0x0381, 0x01},
200 {0x0383, 0x01},
201 {0x0385, 0x01},
202 {0x0387, 0x01},
203 {0x0900, 0x00},
204 {0x0901, 0x00},
205 {0x0902, 0x00},
206 {0x3000, 0x35},
207 {0x3054, 0x01},
208 {0x305C, 0x11},
209
210 {0x0112, 0x0A},
211 {0x0113, 0x0A},
212 {0x034C, 0x07},
213 {0x034D, 0x80},
214 {0x034E, 0x04},
215 {0x034F, 0x38},
216 {0x0401, 0x00},
217 {0x0404, 0x00},
218 {0x0405, 0x10},
219 {0x0408, 0x00},
220 {0x0409, 0x00},
221 {0x040A, 0x00},
222 {0x040B, 0x00},
223 {0x040C, 0x07},
224 {0x040D, 0x80},
225 {0x040E, 0x04},
226 {0x040F, 0x38},
227
228 {0x0301, 0x05},
229 {0x0303, 0x02},
230 {0x0305, 0x03},
231 {0x0306, 0x00},
232 {0x0307, 0x96},
233 {0x0309, 0x0A},
234 {0x030B, 0x01},
235 {0x0310, 0x00},
236
237 {0x0820, 0x12},
238 {0x0821, 0xC0},
239 {0x0822, 0x00},
240 {0x0823, 0x00},
241
242 {0x3A03, 0x04},
243 {0x3A04, 0xF8},
244 {0x3A05, 0x02},
245
246 {0x0B06, 0x01},
247 {0x30A2, 0x00},
248
249 {0x30B4, 0x00},
250
251 {0x3A02, 0xFF},
252
253 {0x3011, 0x00},
254 {0x3013, 0x01},
255
256 {0x0202, 0x0C},
257 {0x0203, 0x70},
258 {0x0224, 0x01},
259 {0x0225, 0xF4},
260
261 {0x0204, 0x00},
262 {0x0205, 0x00},
263 {0x020E, 0x01},
264 {0x020F, 0x00},
265 {0x0210, 0x01},
266 {0x0211, 0x00},
267 {0x0212, 0x01},
268 {0x0213, 0x00},
269 {0x0214, 0x01},
270 {0x0215, 0x00},
271 {0x0216, 0x00},
272 {0x0217, 0x00},
273
274 {0x4170, 0x00},
275 {0x4171, 0x10},
276 {0x4176, 0x00},
277 {0x4177, 0x3C},
278 {0xAE20, 0x04},
279 {0xAE21, 0x5C},
280
281 {IMX214_TABLE_WAIT_MS, 10},
282 {0x0138, 0x01},
283 {IMX214_TABLE_END, 0x00}
284};
285
286static const struct reg_8 mode_table_common[] = {
287 /* software reset */
288
289 /* software standby settings */
290 {0x0100, 0x00},
291
292 /* ATR setting */
293 {0x9300, 0x02},
294
295 /* external clock setting */
296 {0x0136, 0x18},
297 {0x0137, 0x00},
298
299 /* global setting */
300 /* basic config */
301 {0x0101, 0x00},
302 {0x0105, 0x01},
303 {0x0106, 0x01},
304 {0x4550, 0x02},
305 {0x4601, 0x00},
306 {0x4642, 0x05},
307 {0x6227, 0x11},
308 {0x6276, 0x00},
309 {0x900E, 0x06},
310 {0xA802, 0x90},
311 {0xA803, 0x11},
312 {0xA804, 0x62},
313 {0xA805, 0x77},
314 {0xA806, 0xAE},
315 {0xA807, 0x34},
316 {0xA808, 0xAE},
317 {0xA809, 0x35},
318 {0xA80A, 0x62},
319 {0xA80B, 0x83},
320 {0xAE33, 0x00},
321
322 /* analog setting */
323 {0x4174, 0x00},
324 {0x4175, 0x11},
325 {0x4612, 0x29},
326 {0x461B, 0x12},
327 {0x461F, 0x06},
328 {0x4635, 0x07},
329 {0x4637, 0x30},
330 {0x463F, 0x18},
331 {0x4641, 0x0D},
332 {0x465B, 0x12},
333 {0x465F, 0x11},
334 {0x4663, 0x11},
335 {0x4667, 0x0F},
336 {0x466F, 0x0F},
337 {0x470E, 0x09},
338 {0x4909, 0xAB},
339 {0x490B, 0x95},
340 {0x4915, 0x5D},
341 {0x4A5F, 0xFF},
342 {0x4A61, 0xFF},
343 {0x4A73, 0x62},
344 {0x4A85, 0x00},
345 {0x4A87, 0xFF},
346
347 /* embedded data */
348 {0x5041, 0x04},
349 {0x583C, 0x04},
350 {0x620E, 0x04},
351 {0x6EB2, 0x01},
352 {0x6EB3, 0x00},
353 {0x9300, 0x02},
354
355 /* imagequality */
356 /* HDR setting */
357 {0x3001, 0x07},
358 {0x6D12, 0x3F},
359 {0x6D13, 0xFF},
360 {0x9344, 0x03},
361 {0x9706, 0x10},
362 {0x9707, 0x03},
363 {0x9708, 0x03},
364 {0x9E04, 0x01},
365 {0x9E05, 0x00},
366 {0x9E0C, 0x01},
367 {0x9E0D, 0x02},
368 {0x9E24, 0x00},
369 {0x9E25, 0x8C},
370 {0x9E26, 0x00},
371 {0x9E27, 0x94},
372 {0x9E28, 0x00},
373 {0x9E29, 0x96},
374
375 /* CNR parameter setting */
376 {0x69DB, 0x01},
377
378 /* Moire reduction */
379 {0x6957, 0x01},
380
381 /* image enhancement */
382 {0x6987, 0x17},
383 {0x698A, 0x03},
384 {0x698B, 0x03},
385
386 /* white balanace */
387 {0x0B8E, 0x01},
388 {0x0B8F, 0x00},
389 {0x0B90, 0x01},
390 {0x0B91, 0x00},
391 {0x0B92, 0x01},
392 {0x0B93, 0x00},
393 {0x0B94, 0x01},
394 {0x0B95, 0x00},
395
396 /* ATR setting */
397 {0x6E50, 0x00},
398 {0x6E51, 0x32},
399 {0x9340, 0x00},
400 {0x9341, 0x3C},
401 {0x9342, 0x03},
402 {0x9343, 0xFF},
403 {IMX214_TABLE_END, 0x00}
404};
405
406/*
407 * Declare modes in order, from biggest
408 * to smallest height.
409 */
410static const struct imx214_mode {
411 u32 width;
412 u32 height;
413 const struct reg_8 *reg_table;
414} imx214_modes[] = {
415 {
416 .width = 4096,
417 .height = 2304,
418 .reg_table = mode_4096x2304,
419 },
420 {
421 .width = 1920,
422 .height = 1080,
423 .reg_table = mode_1920x1080,
424 },
425};
426
427static inline struct imx214 *to_imx214(struct v4l2_subdev *sd)
428{
429 return container_of(sd, struct imx214, sd);
430}
431
432static int __maybe_unused imx214_power_on(struct device *dev)
433{
434 struct i2c_client *client = to_i2c_client(dev);
435 struct v4l2_subdev *sd = i2c_get_clientdata(client);
436 struct imx214 *imx214 = to_imx214(sd);
437 int ret;
438
439 ret = regulator_bulk_enable(IMX214_NUM_SUPPLIES, imx214->supplies);
440 if (ret < 0) {
441 dev_err(imx214->dev, "failed to enable regulators: %d\n", ret);
442 return ret;
443 }
444
445 usleep_range(2000, 3000);
446
447 ret = clk_prepare_enable(imx214->xclk);
448 if (ret < 0) {
449 regulator_bulk_disable(IMX214_NUM_SUPPLIES, imx214->supplies);
450 dev_err(imx214->dev, "clk prepare enable failed\n");
451 return ret;
452 }
453
454 gpiod_set_value_cansleep(imx214->enable_gpio, 1);
455 usleep_range(12000, 15000);
456
457 return 0;
458}
459
460static int __maybe_unused imx214_power_off(struct device *dev)
461{
462 struct i2c_client *client = to_i2c_client(dev);
463 struct v4l2_subdev *sd = i2c_get_clientdata(client);
464 struct imx214 *imx214 = to_imx214(sd);
465
466 gpiod_set_value_cansleep(imx214->enable_gpio, 0);
467
468 clk_disable_unprepare(imx214->xclk);
469
470 regulator_bulk_disable(IMX214_NUM_SUPPLIES, imx214->supplies);
471 usleep_range(10, 20);
472
473 return 0;
474}
475
476static int imx214_enum_mbus_code(struct v4l2_subdev *sd,
477 struct v4l2_subdev_state *sd_state,
478 struct v4l2_subdev_mbus_code_enum *code)
479{
480 if (code->index > 0)
481 return -EINVAL;
482
483 code->code = IMX214_MBUS_CODE;
484
485 return 0;
486}
487
488static int imx214_enum_frame_size(struct v4l2_subdev *subdev,
489 struct v4l2_subdev_state *sd_state,
490 struct v4l2_subdev_frame_size_enum *fse)
491{
492 if (fse->code != IMX214_MBUS_CODE)
493 return -EINVAL;
494
495 if (fse->index >= ARRAY_SIZE(imx214_modes))
496 return -EINVAL;
497
498 fse->min_width = fse->max_width = imx214_modes[fse->index].width;
499 fse->min_height = fse->max_height = imx214_modes[fse->index].height;
500
501 return 0;
502}
503
504#ifdef CONFIG_VIDEO_ADV_DEBUG
505static int imx214_s_register(struct v4l2_subdev *subdev,
506 const struct v4l2_dbg_register *reg)
507{
508 struct imx214 *imx214 = container_of(subdev, struct imx214, sd);
509
510 return regmap_write(imx214->regmap, reg->reg, reg->val);
511}
512
513static int imx214_g_register(struct v4l2_subdev *subdev,
514 struct v4l2_dbg_register *reg)
515{
516 struct imx214 *imx214 = container_of(subdev, struct imx214, sd);
517 unsigned int aux;
518 int ret;
519
520 reg->size = 1;
521 ret = regmap_read(imx214->regmap, reg->reg, &aux);
522 reg->val = aux;
523
524 return ret;
525}
526#endif
527
528static const struct v4l2_subdev_core_ops imx214_core_ops = {
529#ifdef CONFIG_VIDEO_ADV_DEBUG
530 .g_register = imx214_g_register,
531 .s_register = imx214_s_register,
532#endif
533};
534
535static struct v4l2_mbus_framefmt *
536__imx214_get_pad_format(struct imx214 *imx214,
537 struct v4l2_subdev_state *sd_state,
538 unsigned int pad,
539 enum v4l2_subdev_format_whence which)
540{
541 switch (which) {
542 case V4L2_SUBDEV_FORMAT_TRY:
543 return v4l2_subdev_get_try_format(&imx214->sd, sd_state, pad);
544 case V4L2_SUBDEV_FORMAT_ACTIVE:
545 return &imx214->fmt;
546 default:
547 return NULL;
548 }
549}
550
551static int imx214_get_format(struct v4l2_subdev *sd,
552 struct v4l2_subdev_state *sd_state,
553 struct v4l2_subdev_format *format)
554{
555 struct imx214 *imx214 = to_imx214(sd);
556
557 mutex_lock(&imx214->mutex);
558 format->format = *__imx214_get_pad_format(imx214, sd_state,
559 format->pad,
560 format->which);
561 mutex_unlock(&imx214->mutex);
562
563 return 0;
564}
565
566static struct v4l2_rect *
567__imx214_get_pad_crop(struct imx214 *imx214,
568 struct v4l2_subdev_state *sd_state,
569 unsigned int pad, enum v4l2_subdev_format_whence which)
570{
571 switch (which) {
572 case V4L2_SUBDEV_FORMAT_TRY:
573 return v4l2_subdev_get_try_crop(&imx214->sd, sd_state, pad);
574 case V4L2_SUBDEV_FORMAT_ACTIVE:
575 return &imx214->crop;
576 default:
577 return NULL;
578 }
579}
580
581static int imx214_set_format(struct v4l2_subdev *sd,
582 struct v4l2_subdev_state *sd_state,
583 struct v4l2_subdev_format *format)
584{
585 struct imx214 *imx214 = to_imx214(sd);
586 struct v4l2_mbus_framefmt *__format;
587 struct v4l2_rect *__crop;
588 const struct imx214_mode *mode;
589
590 mutex_lock(&imx214->mutex);
591
592 __crop = __imx214_get_pad_crop(imx214, sd_state, format->pad,
593 format->which);
594
595 mode = v4l2_find_nearest_size(imx214_modes,
596 ARRAY_SIZE(imx214_modes), width, height,
597 format->format.width,
598 format->format.height);
599
600 __crop->width = mode->width;
601 __crop->height = mode->height;
602
603 __format = __imx214_get_pad_format(imx214, sd_state, format->pad,
604 format->which);
605 __format->width = __crop->width;
606 __format->height = __crop->height;
607 __format->code = IMX214_MBUS_CODE;
608 __format->field = V4L2_FIELD_NONE;
609 __format->colorspace = V4L2_COLORSPACE_SRGB;
610 __format->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(__format->colorspace);
611 __format->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
612 __format->colorspace, __format->ycbcr_enc);
613 __format->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(__format->colorspace);
614
615 format->format = *__format;
616
617 mutex_unlock(&imx214->mutex);
618
619 return 0;
620}
621
622static int imx214_get_selection(struct v4l2_subdev *sd,
623 struct v4l2_subdev_state *sd_state,
624 struct v4l2_subdev_selection *sel)
625{
626 struct imx214 *imx214 = to_imx214(sd);
627
628 if (sel->target != V4L2_SEL_TGT_CROP)
629 return -EINVAL;
630
631 mutex_lock(&imx214->mutex);
632 sel->r = *__imx214_get_pad_crop(imx214, sd_state, sel->pad,
633 sel->which);
634 mutex_unlock(&imx214->mutex);
635 return 0;
636}
637
638static int imx214_entity_init_cfg(struct v4l2_subdev *subdev,
639 struct v4l2_subdev_state *sd_state)
640{
641 struct v4l2_subdev_format fmt = { };
642
643 fmt.which = sd_state ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
644 fmt.format.width = imx214_modes[0].width;
645 fmt.format.height = imx214_modes[0].height;
646
647 imx214_set_format(subdev, sd_state, &fmt);
648
649 return 0;
650}
651
652static int imx214_set_ctrl(struct v4l2_ctrl *ctrl)
653{
654 struct imx214 *imx214 = container_of(ctrl->handler,
655 struct imx214, ctrls);
656 u8 vals[2];
657 int ret;
658
659 /*
660 * Applying V4L2 control value only happens
661 * when power is up for streaming
662 */
663 if (!pm_runtime_get_if_in_use(imx214->dev))
664 return 0;
665
666 switch (ctrl->id) {
667 case V4L2_CID_EXPOSURE:
668 vals[1] = ctrl->val;
669 vals[0] = ctrl->val >> 8;
670 ret = regmap_bulk_write(imx214->regmap, 0x202, vals, 2);
671 if (ret < 0)
672 dev_err(imx214->dev, "Error %d\n", ret);
673 ret = 0;
674 break;
675
676 default:
677 ret = -EINVAL;
678 }
679
680 pm_runtime_put(imx214->dev);
681
682 return ret;
683}
684
685static const struct v4l2_ctrl_ops imx214_ctrl_ops = {
686 .s_ctrl = imx214_set_ctrl,
687};
688
689#define MAX_CMD 4
690static int imx214_write_table(struct imx214 *imx214,
691 const struct reg_8 table[])
692{
693 u8 vals[MAX_CMD];
694 int i;
695 int ret;
696
697 for (; table->addr != IMX214_TABLE_END ; table++) {
698 if (table->addr == IMX214_TABLE_WAIT_MS) {
699 usleep_range(table->val * 1000,
700 table->val * 1000 + 500);
701 continue;
702 }
703
704 for (i = 0; i < MAX_CMD; i++) {
705 if (table[i].addr != (table[0].addr + i))
706 break;
707 vals[i] = table[i].val;
708 }
709
710 ret = regmap_bulk_write(imx214->regmap, table->addr, vals, i);
711
712 if (ret) {
713 dev_err(imx214->dev, "write_table error: %d\n", ret);
714 return ret;
715 }
716
717 table += i - 1;
718 }
719
720 return 0;
721}
722
723static int imx214_start_streaming(struct imx214 *imx214)
724{
725 const struct imx214_mode *mode;
726 int ret;
727
728 mutex_lock(&imx214->mutex);
729 ret = imx214_write_table(imx214, mode_table_common);
730 if (ret < 0) {
731 dev_err(imx214->dev, "could not sent common table %d\n", ret);
732 goto error;
733 }
734
735 mode = v4l2_find_nearest_size(imx214_modes,
736 ARRAY_SIZE(imx214_modes), width, height,
737 imx214->fmt.width, imx214->fmt.height);
738 ret = imx214_write_table(imx214, mode->reg_table);
739 if (ret < 0) {
740 dev_err(imx214->dev, "could not sent mode table %d\n", ret);
741 goto error;
742 }
743 ret = __v4l2_ctrl_handler_setup(&imx214->ctrls);
744 if (ret < 0) {
745 dev_err(imx214->dev, "could not sync v4l2 controls\n");
746 goto error;
747 }
748 ret = regmap_write(imx214->regmap, 0x100, 1);
749 if (ret < 0) {
750 dev_err(imx214->dev, "could not sent start table %d\n", ret);
751 goto error;
752 }
753
754 mutex_unlock(&imx214->mutex);
755 return 0;
756
757error:
758 mutex_unlock(&imx214->mutex);
759 return ret;
760}
761
762static int imx214_stop_streaming(struct imx214 *imx214)
763{
764 int ret;
765
766 ret = regmap_write(imx214->regmap, 0x100, 0);
767 if (ret < 0)
768 dev_err(imx214->dev, "could not sent stop table %d\n", ret);
769
770 return ret;
771}
772
773static int imx214_s_stream(struct v4l2_subdev *subdev, int enable)
774{
775 struct imx214 *imx214 = to_imx214(subdev);
776 int ret;
777
778 if (imx214->streaming == enable)
779 return 0;
780
781 if (enable) {
782 ret = pm_runtime_resume_and_get(imx214->dev);
783 if (ret < 0)
784 return ret;
785
786 ret = imx214_start_streaming(imx214);
787 if (ret < 0)
788 goto err_rpm_put;
789 } else {
790 ret = imx214_stop_streaming(imx214);
791 if (ret < 0)
792 goto err_rpm_put;
793 pm_runtime_put(imx214->dev);
794 }
795
796 imx214->streaming = enable;
797 return 0;
798
799err_rpm_put:
800 pm_runtime_put(imx214->dev);
801 return ret;
802}
803
804static int imx214_g_frame_interval(struct v4l2_subdev *subdev,
805 struct v4l2_subdev_frame_interval *fival)
806{
807 fival->interval.numerator = 1;
808 fival->interval.denominator = IMX214_FPS;
809
810 return 0;
811}
812
813static int imx214_enum_frame_interval(struct v4l2_subdev *subdev,
814 struct v4l2_subdev_state *sd_state,
815 struct v4l2_subdev_frame_interval_enum *fie)
816{
817 const struct imx214_mode *mode;
818
819 if (fie->index != 0)
820 return -EINVAL;
821
822 mode = v4l2_find_nearest_size(imx214_modes,
823 ARRAY_SIZE(imx214_modes), width, height,
824 fie->width, fie->height);
825
826 fie->code = IMX214_MBUS_CODE;
827 fie->width = mode->width;
828 fie->height = mode->height;
829 fie->interval.numerator = 1;
830 fie->interval.denominator = IMX214_FPS;
831
832 return 0;
833}
834
835static const struct v4l2_subdev_video_ops imx214_video_ops = {
836 .s_stream = imx214_s_stream,
837 .g_frame_interval = imx214_g_frame_interval,
838 .s_frame_interval = imx214_g_frame_interval,
839};
840
841static const struct v4l2_subdev_pad_ops imx214_subdev_pad_ops = {
842 .enum_mbus_code = imx214_enum_mbus_code,
843 .enum_frame_size = imx214_enum_frame_size,
844 .enum_frame_interval = imx214_enum_frame_interval,
845 .get_fmt = imx214_get_format,
846 .set_fmt = imx214_set_format,
847 .get_selection = imx214_get_selection,
848 .init_cfg = imx214_entity_init_cfg,
849};
850
851static const struct v4l2_subdev_ops imx214_subdev_ops = {
852 .core = &imx214_core_ops,
853 .video = &imx214_video_ops,
854 .pad = &imx214_subdev_pad_ops,
855};
856
857static const struct regmap_config sensor_regmap_config = {
858 .reg_bits = 16,
859 .val_bits = 8,
860 .cache_type = REGCACHE_RBTREE,
861};
862
863static int imx214_get_regulators(struct device *dev, struct imx214 *imx214)
864{
865 unsigned int i;
866
867 for (i = 0; i < IMX214_NUM_SUPPLIES; i++)
868 imx214->supplies[i].supply = imx214_supply_name[i];
869
870 return devm_regulator_bulk_get(dev, IMX214_NUM_SUPPLIES,
871 imx214->supplies);
872}
873
874static int imx214_parse_fwnode(struct device *dev)
875{
876 struct fwnode_handle *endpoint;
877 struct v4l2_fwnode_endpoint bus_cfg = {
878 .bus_type = V4L2_MBUS_CSI2_DPHY,
879 };
880 unsigned int i;
881 int ret;
882
883 endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL);
884 if (!endpoint) {
885 dev_err(dev, "endpoint node not found\n");
886 return -EINVAL;
887 }
888
889 ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, &bus_cfg);
890 if (ret) {
891 dev_err(dev, "parsing endpoint node failed\n");
892 goto done;
893 }
894
895 for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++)
896 if (bus_cfg.link_frequencies[i] == IMX214_DEFAULT_LINK_FREQ)
897 break;
898
899 if (i == bus_cfg.nr_of_link_frequencies) {
900 dev_err(dev, "link-frequencies %d not supported, Please review your DT\n",
901 IMX214_DEFAULT_LINK_FREQ);
902 ret = -EINVAL;
903 goto done;
904 }
905
906done:
907 v4l2_fwnode_endpoint_free(&bus_cfg);
908 fwnode_handle_put(endpoint);
909 return ret;
910}
911
912static int __maybe_unused imx214_suspend(struct device *dev)
913{
914 struct i2c_client *client = to_i2c_client(dev);
915 struct v4l2_subdev *sd = i2c_get_clientdata(client);
916 struct imx214 *imx214 = to_imx214(sd);
917
918 if (imx214->streaming)
919 imx214_stop_streaming(imx214);
920
921 return 0;
922}
923
924static int __maybe_unused imx214_resume(struct device *dev)
925{
926 struct i2c_client *client = to_i2c_client(dev);
927 struct v4l2_subdev *sd = i2c_get_clientdata(client);
928 struct imx214 *imx214 = to_imx214(sd);
929 int ret;
930
931 if (imx214->streaming) {
932 ret = imx214_start_streaming(imx214);
933 if (ret)
934 goto error;
935 }
936
937 return 0;
938
939error:
940 imx214_stop_streaming(imx214);
941 imx214->streaming = 0;
942 return ret;
943}
944
945static int imx214_probe(struct i2c_client *client)
946{
947 struct device *dev = &client->dev;
948 struct imx214 *imx214;
949 static const s64 link_freq[] = {
950 IMX214_DEFAULT_LINK_FREQ,
951 };
952 static const struct v4l2_area unit_size = {
953 .width = 1120,
954 .height = 1120,
955 };
956 int ret;
957
958 ret = imx214_parse_fwnode(dev);
959 if (ret)
960 return ret;
961
962 imx214 = devm_kzalloc(dev, sizeof(*imx214), GFP_KERNEL);
963 if (!imx214)
964 return -ENOMEM;
965
966 imx214->dev = dev;
967
968 imx214->xclk = devm_clk_get(dev, NULL);
969 if (IS_ERR(imx214->xclk)) {
970 dev_err(dev, "could not get xclk");
971 return PTR_ERR(imx214->xclk);
972 }
973
974 ret = clk_set_rate(imx214->xclk, IMX214_DEFAULT_CLK_FREQ);
975 if (ret) {
976 dev_err(dev, "could not set xclk frequency\n");
977 return ret;
978 }
979
980 ret = imx214_get_regulators(dev, imx214);
981 if (ret < 0) {
982 dev_err(dev, "cannot get regulators\n");
983 return ret;
984 }
985
986 imx214->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);
987 if (IS_ERR(imx214->enable_gpio)) {
988 dev_err(dev, "cannot get enable gpio\n");
989 return PTR_ERR(imx214->enable_gpio);
990 }
991
992 imx214->regmap = devm_regmap_init_i2c(client, &sensor_regmap_config);
993 if (IS_ERR(imx214->regmap)) {
994 dev_err(dev, "regmap init failed\n");
995 return PTR_ERR(imx214->regmap);
996 }
997
998 v4l2_i2c_subdev_init(&imx214->sd, client, &imx214_subdev_ops);
999
1000 /*
1001 * Enable power initially, to avoid warnings
1002 * from clk_disable on power_off
1003 */
1004 imx214_power_on(imx214->dev);
1005
1006 pm_runtime_set_active(imx214->dev);
1007 pm_runtime_enable(imx214->dev);
1008 pm_runtime_idle(imx214->dev);
1009
1010 v4l2_ctrl_handler_init(&imx214->ctrls, 3);
1011
1012 imx214->pixel_rate = v4l2_ctrl_new_std(&imx214->ctrls, NULL,
1013 V4L2_CID_PIXEL_RATE, 0,
1014 IMX214_DEFAULT_PIXEL_RATE, 1,
1015 IMX214_DEFAULT_PIXEL_RATE);
1016 imx214->link_freq = v4l2_ctrl_new_int_menu(&imx214->ctrls, NULL,
1017 V4L2_CID_LINK_FREQ,
1018 ARRAY_SIZE(link_freq) - 1,
1019 0, link_freq);
1020 if (imx214->link_freq)
1021 imx214->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1022
1023 /*
1024 * WARNING!
1025 * Values obtained reverse engineering blobs and/or devices.
1026 * Ranges and functionality might be wrong.
1027 *
1028 * Sony, please release some register set documentation for the
1029 * device.
1030 *
1031 * Yours sincerely, Ricardo.
1032 */
1033 imx214->exposure = v4l2_ctrl_new_std(&imx214->ctrls, &imx214_ctrl_ops,
1034 V4L2_CID_EXPOSURE,
1035 0, 3184, 1, 0x0c70);
1036
1037 imx214->unit_size = v4l2_ctrl_new_std_compound(&imx214->ctrls,
1038 NULL,
1039 V4L2_CID_UNIT_CELL_SIZE,
1040 v4l2_ctrl_ptr_create((void *)&unit_size));
1041 ret = imx214->ctrls.error;
1042 if (ret) {
1043 dev_err(&client->dev, "%s control init failed (%d)\n",
1044 __func__, ret);
1045 goto free_ctrl;
1046 }
1047
1048 imx214->sd.ctrl_handler = &imx214->ctrls;
1049 mutex_init(&imx214->mutex);
1050 imx214->ctrls.lock = &imx214->mutex;
1051
1052 imx214->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1053 imx214->pad.flags = MEDIA_PAD_FL_SOURCE;
1054 imx214->sd.dev = &client->dev;
1055 imx214->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
1056
1057 ret = media_entity_pads_init(&imx214->sd.entity, 1, &imx214->pad);
1058 if (ret < 0) {
1059 dev_err(dev, "could not register media entity\n");
1060 goto free_ctrl;
1061 }
1062
1063 imx214_entity_init_cfg(&imx214->sd, NULL);
1064
1065 ret = v4l2_async_register_subdev_sensor(&imx214->sd);
1066 if (ret < 0) {
1067 dev_err(dev, "could not register v4l2 device\n");
1068 goto free_entity;
1069 }
1070
1071 return 0;
1072
1073free_entity:
1074 media_entity_cleanup(&imx214->sd.entity);
1075free_ctrl:
1076 mutex_destroy(&imx214->mutex);
1077 v4l2_ctrl_handler_free(&imx214->ctrls);
1078 pm_runtime_disable(imx214->dev);
1079
1080 return ret;
1081}
1082
1083static void imx214_remove(struct i2c_client *client)
1084{
1085 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1086 struct imx214 *imx214 = to_imx214(sd);
1087
1088 v4l2_async_unregister_subdev(&imx214->sd);
1089 media_entity_cleanup(&imx214->sd.entity);
1090 v4l2_ctrl_handler_free(&imx214->ctrls);
1091
1092 pm_runtime_disable(&client->dev);
1093 pm_runtime_set_suspended(&client->dev);
1094
1095 mutex_destroy(&imx214->mutex);
1096}
1097
1098static const struct of_device_id imx214_of_match[] = {
1099 { .compatible = "sony,imx214" },
1100 { }
1101};
1102MODULE_DEVICE_TABLE(of, imx214_of_match);
1103
1104static const struct dev_pm_ops imx214_pm_ops = {
1105 SET_SYSTEM_SLEEP_PM_OPS(imx214_suspend, imx214_resume)
1106 SET_RUNTIME_PM_OPS(imx214_power_off, imx214_power_on, NULL)
1107};
1108
1109static struct i2c_driver imx214_i2c_driver = {
1110 .driver = {
1111 .of_match_table = imx214_of_match,
1112 .pm = &imx214_pm_ops,
1113 .name = "imx214",
1114 },
1115 .probe_new = imx214_probe,
1116 .remove = imx214_remove,
1117};
1118
1119module_i2c_driver(imx214_i2c_driver);
1120
1121MODULE_DESCRIPTION("Sony IMX214 Camera driver");
1122MODULE_AUTHOR("Ricardo Ribalda <ribalda@kernel.org>");
1123MODULE_LICENSE("GPL v2");