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Merge branch 'work.regset' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
[linux/fpc-iii.git] / drivers / media / i2c / imx219.c
blobf64c0ef7a897fc9191b7b41ef8cd399c24b657dd
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * A V4L2 driver for Sony IMX219 cameras.
4 * Copyright (C) 2019, Raspberry Pi (Trading) Ltd
5 *
6 * Based on Sony imx258 camera driver
7 * Copyright (C) 2018 Intel Corporation
8 *
9 * DT / fwnode changes, and regulator / GPIO control taken from imx214 driver
10 * Copyright 2018 Qtechnology A/S
11 *
12 * Flip handling taken from the Sony IMX319 driver.
13 * Copyright (C) 2018 Intel Corporation
14 *
15 */
16
17 #include <linux/clk.h>
18 #include <linux/delay.h>
19 #include <linux/gpio/consumer.h>
20 #include <linux/i2c.h>
21 #include <linux/module.h>
22 #include <linux/pm_runtime.h>
23 #include <linux/regulator/consumer.h>
24 #include <media/v4l2-ctrls.h>
25 #include <media/v4l2-device.h>
26 #include <media/v4l2-event.h>
27 #include <media/v4l2-fwnode.h>
28 #include <media/v4l2-mediabus.h>
29 #include <asm/unaligned.h>
30
31 #define IMX219_REG_VALUE_08BIT 1
32 #define IMX219_REG_VALUE_16BIT 2
33
34 #define IMX219_REG_MODE_SELECT 0x0100
35 #define IMX219_MODE_STANDBY 0x00
36 #define IMX219_MODE_STREAMING 0x01
37
38 /* Chip ID */
39 #define IMX219_REG_CHIP_ID 0x0000
40 #define IMX219_CHIP_ID 0x0219
41
42 /* External clock frequency is 24.0M */
43 #define IMX219_XCLK_FREQ 24000000
44
45 /* Pixel rate is fixed at 182.4M for all the modes */
46 #define IMX219_PIXEL_RATE 182400000
47
48 #define IMX219_DEFAULT_LINK_FREQ 456000000
49
50 /* V_TIMING internal */
51 #define IMX219_REG_VTS 0x0160
52 #define IMX219_VTS_15FPS 0x0dc6
53 #define IMX219_VTS_30FPS_1080P 0x06e3
54 #define IMX219_VTS_30FPS_BINNED 0x06e3
55 #define IMX219_VTS_30FPS_640x480 0x06e3
56 #define IMX219_VTS_MAX 0xffff
57
58 #define IMX219_VBLANK_MIN 4
59
60 /*Frame Length Line*/
61 #define IMX219_FLL_MIN 0x08a6
62 #define IMX219_FLL_MAX 0xffff
63 #define IMX219_FLL_STEP 1
64 #define IMX219_FLL_DEFAULT 0x0c98
65
66 /* HBLANK control - read only */
67 #define IMX219_PPL_DEFAULT 3448
68
69 /* Exposure control */
70 #define IMX219_REG_EXPOSURE 0x015a
71 #define IMX219_EXPOSURE_MIN 4
72 #define IMX219_EXPOSURE_STEP 1
73 #define IMX219_EXPOSURE_DEFAULT 0x640
74 #define IMX219_EXPOSURE_MAX 65535
75
76 /* Analog gain control */
77 #define IMX219_REG_ANALOG_GAIN 0x0157
78 #define IMX219_ANA_GAIN_MIN 0
79 #define IMX219_ANA_GAIN_MAX 232
80 #define IMX219_ANA_GAIN_STEP 1
81 #define IMX219_ANA_GAIN_DEFAULT 0x0
82
83 /* Digital gain control */
84 #define IMX219_REG_DIGITAL_GAIN 0x0158
85 #define IMX219_DGTL_GAIN_MIN 0x0100
86 #define IMX219_DGTL_GAIN_MAX 0x0fff
87 #define IMX219_DGTL_GAIN_DEFAULT 0x0100
88 #define IMX219_DGTL_GAIN_STEP 1
89
90 #define IMX219_REG_ORIENTATION 0x0172
91
92 /* Test Pattern Control */
93 #define IMX219_REG_TEST_PATTERN 0x0600
94 #define IMX219_TEST_PATTERN_DISABLE 0
95 #define IMX219_TEST_PATTERN_SOLID_COLOR 1
96 #define IMX219_TEST_PATTERN_COLOR_BARS 2
97 #define IMX219_TEST_PATTERN_GREY_COLOR 3
98 #define IMX219_TEST_PATTERN_PN9 4
99
100 /* Test pattern colour components */
101 #define IMX219_REG_TESTP_RED 0x0602
102 #define IMX219_REG_TESTP_GREENR 0x0604
103 #define IMX219_REG_TESTP_BLUE 0x0606
104 #define IMX219_REG_TESTP_GREENB 0x0608
105 #define IMX219_TESTP_COLOUR_MIN 0
106 #define IMX219_TESTP_COLOUR_MAX 0x03ff
107 #define IMX219_TESTP_COLOUR_STEP 1
108 #define IMX219_TESTP_RED_DEFAULT IMX219_TESTP_COLOUR_MAX
109 #define IMX219_TESTP_GREENR_DEFAULT 0
110 #define IMX219_TESTP_BLUE_DEFAULT 0
111 #define IMX219_TESTP_GREENB_DEFAULT 0
112
113 /* IMX219 native and active pixel array size. */
114 #define IMX219_NATIVE_WIDTH 3296U
115 #define IMX219_NATIVE_HEIGHT 2480U
116 #define IMX219_PIXEL_ARRAY_LEFT 8U
117 #define IMX219_PIXEL_ARRAY_TOP 8U
118 #define IMX219_PIXEL_ARRAY_WIDTH 3280U
119 #define IMX219_PIXEL_ARRAY_HEIGHT 2464U
120
121 struct imx219_reg {
122 u16 address;
123 u8 val;
124 };
125
126 struct imx219_reg_list {
127 unsigned int num_of_regs;
128 const struct imx219_reg *regs;
129 };
130
131 /* Mode : resolution and related config&values */
132 struct imx219_mode {
133 /* Frame width */
134 unsigned int width;
135 /* Frame height */
136 unsigned int height;
137
138 /* Analog crop rectangle. */
139 struct v4l2_rect crop;
140
141 /* V-timing */
142 unsigned int vts_def;
143
144 /* Default register values */
145 struct imx219_reg_list reg_list;
146 };
147
148 /*
149 * Register sets lifted off the i2C interface from the Raspberry Pi firmware
150 * driver.
151 * 3280x2464 = mode 2, 1920x1080 = mode 1, 1640x1232 = mode 4, 640x480 = mode 7.
152 */
153 static const struct imx219_reg mode_3280x2464_regs[] = {
154 {0x0100, 0x00},
155 {0x30eb, 0x0c},
156 {0x30eb, 0x05},
157 {0x300a, 0xff},
158 {0x300b, 0xff},
159 {0x30eb, 0x05},
160 {0x30eb, 0x09},
161 {0x0114, 0x01},
162 {0x0128, 0x00},
163 {0x012a, 0x18},
164 {0x012b, 0x00},
165 {0x0164, 0x00},
166 {0x0165, 0x00},
167 {0x0166, 0x0c},
168 {0x0167, 0xcf},
169 {0x0168, 0x00},
170 {0x0169, 0x00},
171 {0x016a, 0x09},
172 {0x016b, 0x9f},
173 {0x016c, 0x0c},
174 {0x016d, 0xd0},
175 {0x016e, 0x09},
176 {0x016f, 0xa0},
177 {0x0170, 0x01},
178 {0x0171, 0x01},
179 {0x0174, 0x00},
180 {0x0175, 0x00},
181 {0x0301, 0x05},
182 {0x0303, 0x01},
183 {0x0304, 0x03},
184 {0x0305, 0x03},
185 {0x0306, 0x00},
186 {0x0307, 0x39},
187 {0x030b, 0x01},
188 {0x030c, 0x00},
189 {0x030d, 0x72},
190 {0x0624, 0x0c},
191 {0x0625, 0xd0},
192 {0x0626, 0x09},
193 {0x0627, 0xa0},
194 {0x455e, 0x00},
195 {0x471e, 0x4b},
196 {0x4767, 0x0f},
197 {0x4750, 0x14},
198 {0x4540, 0x00},
199 {0x47b4, 0x14},
200 {0x4713, 0x30},
201 {0x478b, 0x10},
202 {0x478f, 0x10},
203 {0x4793, 0x10},
204 {0x4797, 0x0e},
205 {0x479b, 0x0e},
206 {0x0162, 0x0d},
207 {0x0163, 0x78},
208 };
209
210 static const struct imx219_reg mode_1920_1080_regs[] = {
211 {0x0100, 0x00},
212 {0x30eb, 0x05},
213 {0x30eb, 0x0c},
214 {0x300a, 0xff},
215 {0x300b, 0xff},
216 {0x30eb, 0x05},
217 {0x30eb, 0x09},
218 {0x0114, 0x01},
219 {0x0128, 0x00},
220 {0x012a, 0x18},
221 {0x012b, 0x00},
222 {0x0162, 0x0d},
223 {0x0163, 0x78},
224 {0x0164, 0x02},
225 {0x0165, 0xa8},
226 {0x0166, 0x0a},
227 {0x0167, 0x27},
228 {0x0168, 0x02},
229 {0x0169, 0xb4},
230 {0x016a, 0x06},
231 {0x016b, 0xeb},
232 {0x016c, 0x07},
233 {0x016d, 0x80},
234 {0x016e, 0x04},
235 {0x016f, 0x38},
236 {0x0170, 0x01},
237 {0x0171, 0x01},
238 {0x0174, 0x00},
239 {0x0175, 0x00},
240 {0x0301, 0x05},
241 {0x0303, 0x01},
242 {0x0304, 0x03},
243 {0x0305, 0x03},
244 {0x0306, 0x00},
245 {0x0307, 0x39},
246 {0x030b, 0x01},
247 {0x030c, 0x00},
248 {0x030d, 0x72},
249 {0x0624, 0x07},
250 {0x0625, 0x80},
251 {0x0626, 0x04},
252 {0x0627, 0x38},
253 {0x455e, 0x00},
254 {0x471e, 0x4b},
255 {0x4767, 0x0f},
256 {0x4750, 0x14},
257 {0x4540, 0x00},
258 {0x47b4, 0x14},
259 {0x4713, 0x30},
260 {0x478b, 0x10},
261 {0x478f, 0x10},
262 {0x4793, 0x10},
263 {0x4797, 0x0e},
264 {0x479b, 0x0e},
265 {0x0162, 0x0d},
266 {0x0163, 0x78},
267 };
268
269 static const struct imx219_reg mode_1640_1232_regs[] = {
270 {0x0100, 0x00},
271 {0x30eb, 0x0c},
272 {0x30eb, 0x05},
273 {0x300a, 0xff},
274 {0x300b, 0xff},
275 {0x30eb, 0x05},
276 {0x30eb, 0x09},
277 {0x0114, 0x01},
278 {0x0128, 0x00},
279 {0x012a, 0x18},
280 {0x012b, 0x00},
281 {0x0164, 0x00},
282 {0x0165, 0x00},
283 {0x0166, 0x0c},
284 {0x0167, 0xcf},
285 {0x0168, 0x00},
286 {0x0169, 0x00},
287 {0x016a, 0x09},
288 {0x016b, 0x9f},
289 {0x016c, 0x06},
290 {0x016d, 0x68},
291 {0x016e, 0x04},
292 {0x016f, 0xd0},
293 {0x0170, 0x01},
294 {0x0171, 0x01},
295 {0x0174, 0x01},
296 {0x0175, 0x01},
297 {0x0301, 0x05},
298 {0x0303, 0x01},
299 {0x0304, 0x03},
300 {0x0305, 0x03},
301 {0x0306, 0x00},
302 {0x0307, 0x39},
303 {0x030b, 0x01},
304 {0x030c, 0x00},
305 {0x030d, 0x72},
306 {0x0624, 0x06},
307 {0x0625, 0x68},
308 {0x0626, 0x04},
309 {0x0627, 0xd0},
310 {0x455e, 0x00},
311 {0x471e, 0x4b},
312 {0x4767, 0x0f},
313 {0x4750, 0x14},
314 {0x4540, 0x00},
315 {0x47b4, 0x14},
316 {0x4713, 0x30},
317 {0x478b, 0x10},
318 {0x478f, 0x10},
319 {0x4793, 0x10},
320 {0x4797, 0x0e},
321 {0x479b, 0x0e},
322 {0x0162, 0x0d},
323 {0x0163, 0x78},
324 };
325
326 static const struct imx219_reg mode_640_480_regs[] = {
327 {0x0100, 0x00},
328 {0x30eb, 0x05},
329 {0x30eb, 0x0c},
330 {0x300a, 0xff},
331 {0x300b, 0xff},
332 {0x30eb, 0x05},
333 {0x30eb, 0x09},
334 {0x0114, 0x01},
335 {0x0128, 0x00},
336 {0x012a, 0x18},
337 {0x012b, 0x00},
338 {0x0162, 0x0d},
339 {0x0163, 0x78},
340 {0x0164, 0x03},
341 {0x0165, 0xe8},
342 {0x0166, 0x08},
343 {0x0167, 0xe7},
344 {0x0168, 0x02},
345 {0x0169, 0xf0},
346 {0x016a, 0x06},
347 {0x016b, 0xaf},
348 {0x016c, 0x02},
349 {0x016d, 0x80},
350 {0x016e, 0x01},
351 {0x016f, 0xe0},
352 {0x0170, 0x01},
353 {0x0171, 0x01},
354 {0x0174, 0x03},
355 {0x0175, 0x03},
356 {0x0301, 0x05},
357 {0x0303, 0x01},
358 {0x0304, 0x03},
359 {0x0305, 0x03},
360 {0x0306, 0x00},
361 {0x0307, 0x39},
362 {0x030b, 0x01},
363 {0x030c, 0x00},
364 {0x030d, 0x72},
365 {0x0624, 0x06},
366 {0x0625, 0x68},
367 {0x0626, 0x04},
368 {0x0627, 0xd0},
369 {0x455e, 0x00},
370 {0x471e, 0x4b},
371 {0x4767, 0x0f},
372 {0x4750, 0x14},
373 {0x4540, 0x00},
374 {0x47b4, 0x14},
375 {0x4713, 0x30},
376 {0x478b, 0x10},
377 {0x478f, 0x10},
378 {0x4793, 0x10},
379 {0x4797, 0x0e},
380 {0x479b, 0x0e},
381 };
382
383 static const struct imx219_reg raw8_framefmt_regs[] = {
384 {0x018c, 0x08},
385 {0x018d, 0x08},
386 {0x0309, 0x08},
387 };
388
389 static const struct imx219_reg raw10_framefmt_regs[] = {
390 {0x018c, 0x0a},
391 {0x018d, 0x0a},
392 {0x0309, 0x0a},
393 };
394
395 static const char * const imx219_test_pattern_menu[] = {
396 "Disabled",
397 "Color Bars",
398 "Solid Color",
399 "Grey Color Bars",
400 "PN9"
401 };
402
403 static const int imx219_test_pattern_val[] = {
404 IMX219_TEST_PATTERN_DISABLE,
405 IMX219_TEST_PATTERN_COLOR_BARS,
406 IMX219_TEST_PATTERN_SOLID_COLOR,
407 IMX219_TEST_PATTERN_GREY_COLOR,
408 IMX219_TEST_PATTERN_PN9,
409 };
410
411 /* regulator supplies */
412 static const char * const imx219_supply_name[] = {
413 /* Supplies can be enabled in any order */
414 "VANA", /* Analog (2.8V) supply */
415 "VDIG", /* Digital Core (1.8V) supply */
416 "VDDL", /* IF (1.2V) supply */
417 };
418
419 #define IMX219_NUM_SUPPLIES ARRAY_SIZE(imx219_supply_name)
420
421 /*
422 * The supported formats.
423 * This table MUST contain 4 entries per format, to cover the various flip
424 * combinations in the order
425 * - no flip
426 * - h flip
427 * - v flip
428 * - h&v flips
429 */
430 static const u32 codes[] = {
431 MEDIA_BUS_FMT_SRGGB10_1X10,
432 MEDIA_BUS_FMT_SGRBG10_1X10,
433 MEDIA_BUS_FMT_SGBRG10_1X10,
434 MEDIA_BUS_FMT_SBGGR10_1X10,
435
436 MEDIA_BUS_FMT_SRGGB8_1X8,
437 MEDIA_BUS_FMT_SGRBG8_1X8,
438 MEDIA_BUS_FMT_SGBRG8_1X8,
439 MEDIA_BUS_FMT_SBGGR8_1X8,
440 };
441
442 /*
443 * Initialisation delay between XCLR low->high and the moment when the sensor
444 * can start capture (i.e. can leave software stanby) must be not less than:
445 * t4 + max(t5, t6 + <time to initialize the sensor register over I2C>)
446 * where
447 * t4 is fixed, and is max 200uS,
448 * t5 is fixed, and is 6000uS,
449 * t6 depends on the sensor external clock, and is max 32000 clock periods.
450 * As per sensor datasheet, the external clock must be from 6MHz to 27MHz.
451 * So for any acceptable external clock t6 is always within the range of
452 * 1185 to 5333 uS, and is always less than t5.
453 * For this reason this is always safe to wait (t4 + t5) = 6200 uS, then
454 * initialize the sensor over I2C, and then exit the software standby.
455 *
456 * This start-up time can be optimized a bit more, if we start the writes
457 * over I2C after (t4+t6), but before (t4+t5) expires. But then sensor
458 * initialization over I2C may complete before (t4+t5) expires, and we must
459 * ensure that capture is not started before (t4+t5).
460 *
461 * This delay doesn't account for the power supply startup time. If needed,
462 * this should be taken care of via the regulator framework. E.g. in the
463 * case of DT for regulator-fixed one should define the startup-delay-us
464 * property.
465 */
466 #define IMX219_XCLR_MIN_DELAY_US 6200
467 #define IMX219_XCLR_DELAY_RANGE_US 1000
468
469 /* Mode configs */
470 static const struct imx219_mode supported_modes[] = {
471 {
472 /* 8MPix 15fps mode */
473 .width = 3280,
474 .height = 2464,
475 .crop = {
476 .left = 0,
477 .top = 0,
478 .width = 3280,
479 .height = 2464
480 },
481 .vts_def = IMX219_VTS_15FPS,
482 .reg_list = {
483 .num_of_regs = ARRAY_SIZE(mode_3280x2464_regs),
484 .regs = mode_3280x2464_regs,
485 },
486 },
487 {
488 /* 1080P 30fps cropped */
489 .width = 1920,
490 .height = 1080,
491 .crop = {
492 .left = 680,
493 .top = 692,
494 .width = 1920,
495 .height = 1080
496 },
497 .vts_def = IMX219_VTS_30FPS_1080P,
498 .reg_list = {
499 .num_of_regs = ARRAY_SIZE(mode_1920_1080_regs),
500 .regs = mode_1920_1080_regs,
501 },
502 },
503 {
504 /* 2x2 binned 30fps mode */
505 .width = 1640,
506 .height = 1232,
507 .crop = {
508 .left = 0,
509 .top = 0,
510 .width = 3280,
511 .height = 2464
512 },
513 .vts_def = IMX219_VTS_30FPS_BINNED,
514 .reg_list = {
515 .num_of_regs = ARRAY_SIZE(mode_1640_1232_regs),
516 .regs = mode_1640_1232_regs,
517 },
518 },
519 {
520 /* 640x480 30fps mode */
521 .width = 640,
522 .height = 480,
523 .crop = {
524 .left = 1000,
525 .top = 752,
526 .width = 1280,
527 .height = 960
528 },
529 .vts_def = IMX219_VTS_30FPS_640x480,
530 .reg_list = {
531 .num_of_regs = ARRAY_SIZE(mode_640_480_regs),
532 .regs = mode_640_480_regs,
533 },
534 },
535 };
536
537 struct imx219 {
538 struct v4l2_subdev sd;
539 struct media_pad pad;
540
541 struct v4l2_mbus_framefmt fmt;
542
543 struct clk *xclk; /* system clock to IMX219 */
544 u32 xclk_freq;
545
546 struct gpio_desc *reset_gpio;
547 struct regulator_bulk_data supplies[IMX219_NUM_SUPPLIES];
548
549 struct v4l2_ctrl_handler ctrl_handler;
550 /* V4L2 Controls */
551 struct v4l2_ctrl *pixel_rate;
552 struct v4l2_ctrl *exposure;
553 struct v4l2_ctrl *vflip;
554 struct v4l2_ctrl *hflip;
555 struct v4l2_ctrl *vblank;
556 struct v4l2_ctrl *hblank;
557
558 /* Current mode */
559 const struct imx219_mode *mode;
560
561 /*
562 * Mutex for serialized access:
563 * Protect sensor module set pad format and start/stop streaming safely.
564 */
565 struct mutex mutex;
566
567 /* Streaming on/off */
568 bool streaming;
569 };
570
571 static inline struct imx219 *to_imx219(struct v4l2_subdev *_sd)
572 {
573 return container_of(_sd, struct imx219, sd);
574 }
575
576 /* Read registers up to 2 at a time */
577 static int imx219_read_reg(struct imx219 *imx219, u16 reg, u32 len, u32 *val)
578 {
579 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
580 struct i2c_msg msgs[2];
581 u8 addr_buf[2] = { reg >> 8, reg & 0xff };
582 u8 data_buf[4] = { 0, };
583 int ret;
584
585 if (len > 4)
586 return -EINVAL;
587
588 /* Write register address */
589 msgs[0].addr = client->addr;
590 msgs[0].flags = 0;
591 msgs[0].len = ARRAY_SIZE(addr_buf);
592 msgs[0].buf = addr_buf;
593
594 /* Read data from register */
595 msgs[1].addr = client->addr;
596 msgs[1].flags = I2C_M_RD;
597 msgs[1].len = len;
598 msgs[1].buf = &data_buf[4 - len];
599
600 ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
601 if (ret != ARRAY_SIZE(msgs))
602 return -EIO;
603
604 *val = get_unaligned_be32(data_buf);
605
606 return 0;
607 }
608
609 /* Write registers up to 2 at a time */
610 static int imx219_write_reg(struct imx219 *imx219, u16 reg, u32 len, u32 val)
611 {
612 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
613 u8 buf[6];
614
615 if (len > 4)
616 return -EINVAL;
617
618 put_unaligned_be16(reg, buf);
619 put_unaligned_be32(val << (8 * (4 - len)), buf + 2);
620 if (i2c_master_send(client, buf, len + 2) != len + 2)
621 return -EIO;
622
623 return 0;
624 }
625
626 /* Write a list of registers */
627 static int imx219_write_regs(struct imx219 *imx219,
628 const struct imx219_reg *regs, u32 len)
629 {
630 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
631 unsigned int i;
632 int ret;
633
634 for (i = 0; i < len; i++) {
635 ret = imx219_write_reg(imx219, regs[i].address, 1, regs[i].val);
636 if (ret) {
637 dev_err_ratelimited(&client->dev,
638 "Failed to write reg 0x%4.4x. error = %d\n",
639 regs[i].address, ret);
640
641 return ret;
642 }
643 }
644
645 return 0;
646 }
647
648 /* Get bayer order based on flip setting. */
649 static u32 imx219_get_format_code(struct imx219 *imx219, u32 code)
650 {
651 unsigned int i;
652
653 lockdep_assert_held(&imx219->mutex);
654
655 for (i = 0; i < ARRAY_SIZE(codes); i++)
656 if (codes[i] == code)
657 break;
658
659 if (i >= ARRAY_SIZE(codes))
660 i = 0;
661
662 i = (i & ~3) | (imx219->vflip->val ? 2 : 0) |
663 (imx219->hflip->val ? 1 : 0);
664
665 return codes[i];
666 }
667
668 static void imx219_set_default_format(struct imx219 *imx219)
669 {
670 struct v4l2_mbus_framefmt *fmt;
671
672 fmt = &imx219->fmt;
673 fmt->code = MEDIA_BUS_FMT_SRGGB10_1X10;
674 fmt->colorspace = V4L2_COLORSPACE_SRGB;
675 fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
676 fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
677 fmt->colorspace,
678 fmt->ycbcr_enc);
679 fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
680 fmt->width = supported_modes[0].width;
681 fmt->height = supported_modes[0].height;
682 fmt->field = V4L2_FIELD_NONE;
683 }
684
685 static int imx219_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
686 {
687 struct imx219 *imx219 = to_imx219(sd);
688 struct v4l2_mbus_framefmt *try_fmt =
689 v4l2_subdev_get_try_format(sd, fh->pad, 0);
690 struct v4l2_rect *try_crop;
691
692 mutex_lock(&imx219->mutex);
693
694 /* Initialize try_fmt */
695 try_fmt->width = supported_modes[0].width;
696 try_fmt->height = supported_modes[0].height;
697 try_fmt->code = imx219_get_format_code(imx219,
698 MEDIA_BUS_FMT_SRGGB10_1X10);
699 try_fmt->field = V4L2_FIELD_NONE;
700
701 /* Initialize try_crop rectangle. */
702 try_crop = v4l2_subdev_get_try_crop(sd, fh->pad, 0);
703 try_crop->top = IMX219_PIXEL_ARRAY_TOP;
704 try_crop->left = IMX219_PIXEL_ARRAY_LEFT;
705 try_crop->width = IMX219_PIXEL_ARRAY_WIDTH;
706 try_crop->height = IMX219_PIXEL_ARRAY_HEIGHT;
707
708 mutex_unlock(&imx219->mutex);
709
710 return 0;
711 }
712
713 static int imx219_set_ctrl(struct v4l2_ctrl *ctrl)
714 {
715 struct imx219 *imx219 =
716 container_of(ctrl->handler, struct imx219, ctrl_handler);
717 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
718 int ret;
719
720 if (ctrl->id == V4L2_CID_VBLANK) {
721 int exposure_max, exposure_def;
722
723 /* Update max exposure while meeting expected vblanking */
724 exposure_max = imx219->mode->height + ctrl->val - 4;
725 exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ?
726 exposure_max : IMX219_EXPOSURE_DEFAULT;
727 __v4l2_ctrl_modify_range(imx219->exposure,
728 imx219->exposure->minimum,
729 exposure_max, imx219->exposure->step,
730 exposure_def);
731 }
732
733 /*
734 * Applying V4L2 control value only happens
735 * when power is up for streaming
736 */
737 if (pm_runtime_get_if_in_use(&client->dev) == 0)
738 return 0;
739
740 switch (ctrl->id) {
741 case V4L2_CID_ANALOGUE_GAIN:
742 ret = imx219_write_reg(imx219, IMX219_REG_ANALOG_GAIN,
743 IMX219_REG_VALUE_08BIT, ctrl->val);
744 break;
745 case V4L2_CID_EXPOSURE:
746 ret = imx219_write_reg(imx219, IMX219_REG_EXPOSURE,
747 IMX219_REG_VALUE_16BIT, ctrl->val);
748 break;
749 case V4L2_CID_DIGITAL_GAIN:
750 ret = imx219_write_reg(imx219, IMX219_REG_DIGITAL_GAIN,
751 IMX219_REG_VALUE_16BIT, ctrl->val);
752 break;
753 case V4L2_CID_TEST_PATTERN:
754 ret = imx219_write_reg(imx219, IMX219_REG_TEST_PATTERN,
755 IMX219_REG_VALUE_16BIT,
756 imx219_test_pattern_val[ctrl->val]);
757 break;
758 case V4L2_CID_HFLIP:
759 case V4L2_CID_VFLIP:
760 ret = imx219_write_reg(imx219, IMX219_REG_ORIENTATION, 1,
761 imx219->hflip->val |
762 imx219->vflip->val << 1);
763 break;
764 case V4L2_CID_VBLANK:
765 ret = imx219_write_reg(imx219, IMX219_REG_VTS,
766 IMX219_REG_VALUE_16BIT,
767 imx219->mode->height + ctrl->val);
768 break;
769 case V4L2_CID_TEST_PATTERN_RED:
770 ret = imx219_write_reg(imx219, IMX219_REG_TESTP_RED,
771 IMX219_REG_VALUE_16BIT, ctrl->val);
772 break;
773 case V4L2_CID_TEST_PATTERN_GREENR:
774 ret = imx219_write_reg(imx219, IMX219_REG_TESTP_GREENR,
775 IMX219_REG_VALUE_16BIT, ctrl->val);
776 break;
777 case V4L2_CID_TEST_PATTERN_BLUE:
778 ret = imx219_write_reg(imx219, IMX219_REG_TESTP_BLUE,
779 IMX219_REG_VALUE_16BIT, ctrl->val);
780 break;
781 case V4L2_CID_TEST_PATTERN_GREENB:
782 ret = imx219_write_reg(imx219, IMX219_REG_TESTP_GREENB,
783 IMX219_REG_VALUE_16BIT, ctrl->val);
784 break;
785 default:
786 dev_info(&client->dev,
787 "ctrl(id:0x%x,val:0x%x) is not handled\n",
788 ctrl->id, ctrl->val);
789 ret = -EINVAL;
790 break;
791 }
792
793 pm_runtime_put(&client->dev);
794
795 return ret;
796 }
797
798 static const struct v4l2_ctrl_ops imx219_ctrl_ops = {
799 .s_ctrl = imx219_set_ctrl,
800 };
801
802 static int imx219_enum_mbus_code(struct v4l2_subdev *sd,
803 struct v4l2_subdev_pad_config *cfg,
804 struct v4l2_subdev_mbus_code_enum *code)
805 {
806 struct imx219 *imx219 = to_imx219(sd);
807
808 if (code->index >= (ARRAY_SIZE(codes) / 4))
809 return -EINVAL;
810
811 code->code = imx219_get_format_code(imx219, codes[code->index * 4]);
812
813 return 0;
814 }
815
816 static int imx219_enum_frame_size(struct v4l2_subdev *sd,
817 struct v4l2_subdev_pad_config *cfg,
818 struct v4l2_subdev_frame_size_enum *fse)
819 {
820 struct imx219 *imx219 = to_imx219(sd);
821
822 if (fse->index >= ARRAY_SIZE(supported_modes))
823 return -EINVAL;
824
825 if (fse->code != imx219_get_format_code(imx219, fse->code))
826 return -EINVAL;
827
828 fse->min_width = supported_modes[fse->index].width;
829 fse->max_width = fse->min_width;
830 fse->min_height = supported_modes[fse->index].height;
831 fse->max_height = fse->min_height;
832
833 return 0;
834 }
835
836 static void imx219_reset_colorspace(struct v4l2_mbus_framefmt *fmt)
837 {
838 fmt->colorspace = V4L2_COLORSPACE_SRGB;
839 fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
840 fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
841 fmt->colorspace,
842 fmt->ycbcr_enc);
843 fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
844 }
845
846 static void imx219_update_pad_format(struct imx219 *imx219,
847 const struct imx219_mode *mode,
848 struct v4l2_subdev_format *fmt)
849 {
850 fmt->format.width = mode->width;
851 fmt->format.height = mode->height;
852 fmt->format.field = V4L2_FIELD_NONE;
853 imx219_reset_colorspace(&fmt->format);
854 }
855
856 static int __imx219_get_pad_format(struct imx219 *imx219,
857 struct v4l2_subdev_pad_config *cfg,
858 struct v4l2_subdev_format *fmt)
859 {
860 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
861 struct v4l2_mbus_framefmt *try_fmt =
862 v4l2_subdev_get_try_format(&imx219->sd, cfg, fmt->pad);
863 /* update the code which could change due to vflip or hflip: */
864 try_fmt->code = imx219_get_format_code(imx219, try_fmt->code);
865 fmt->format = *try_fmt;
866 } else {
867 imx219_update_pad_format(imx219, imx219->mode, fmt);
868 fmt->format.code = imx219_get_format_code(imx219,
869 imx219->fmt.code);
870 }
871
872 return 0;
873 }
874
875 static int imx219_get_pad_format(struct v4l2_subdev *sd,
876 struct v4l2_subdev_pad_config *cfg,
877 struct v4l2_subdev_format *fmt)
878 {
879 struct imx219 *imx219 = to_imx219(sd);
880 int ret;
881
882 mutex_lock(&imx219->mutex);
883 ret = __imx219_get_pad_format(imx219, cfg, fmt);
884 mutex_unlock(&imx219->mutex);
885
886 return ret;
887 }
888
889 static int imx219_set_pad_format(struct v4l2_subdev *sd,
890 struct v4l2_subdev_pad_config *cfg,
891 struct v4l2_subdev_format *fmt)
892 {
893 struct imx219 *imx219 = to_imx219(sd);
894 const struct imx219_mode *mode;
895 struct v4l2_mbus_framefmt *framefmt;
896 int exposure_max, exposure_def, hblank;
897 unsigned int i;
898
899 mutex_lock(&imx219->mutex);
900
901 for (i = 0; i < ARRAY_SIZE(codes); i++)
902 if (codes[i] == fmt->format.code)
903 break;
904 if (i >= ARRAY_SIZE(codes))
905 i = 0;
906
907 /* Bayer order varies with flips */
908 fmt->format.code = imx219_get_format_code(imx219, codes[i]);
909
910 mode = v4l2_find_nearest_size(supported_modes,
911 ARRAY_SIZE(supported_modes),
912 width, height,
913 fmt->format.width, fmt->format.height);
914 imx219_update_pad_format(imx219, mode, fmt);
915 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
916 framefmt = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
917 *framefmt = fmt->format;
918 } else if (imx219->mode != mode ||
919 imx219->fmt.code != fmt->format.code) {
920 imx219->fmt = fmt->format;
921 imx219->mode = mode;
922 /* Update limits and set FPS to default */
923 __v4l2_ctrl_modify_range(imx219->vblank, IMX219_VBLANK_MIN,
924 IMX219_VTS_MAX - mode->height, 1,
925 mode->vts_def - mode->height);
926 __v4l2_ctrl_s_ctrl(imx219->vblank,
927 mode->vts_def - mode->height);
928 /* Update max exposure while meeting expected vblanking */
929 exposure_max = mode->vts_def - 4;
930 exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ?
931 exposure_max : IMX219_EXPOSURE_DEFAULT;
932 __v4l2_ctrl_modify_range(imx219->exposure,
933 imx219->exposure->minimum,
934 exposure_max, imx219->exposure->step,
935 exposure_def);
936 /*
937 * Currently PPL is fixed to IMX219_PPL_DEFAULT, so hblank
938 * depends on mode->width only, and is not changeble in any
939 * way other than changing the mode.
940 */
941 hblank = IMX219_PPL_DEFAULT - mode->width;
942 __v4l2_ctrl_modify_range(imx219->hblank, hblank, hblank, 1,
943 hblank);
944 }
945
946 mutex_unlock(&imx219->mutex);
947
948 return 0;
949 }
950
951 static int imx219_set_framefmt(struct imx219 *imx219)
952 {
953 switch (imx219->fmt.code) {
954 case MEDIA_BUS_FMT_SRGGB8_1X8:
955 case MEDIA_BUS_FMT_SGRBG8_1X8:
956 case MEDIA_BUS_FMT_SGBRG8_1X8:
957 case MEDIA_BUS_FMT_SBGGR8_1X8:
958 return imx219_write_regs(imx219, raw8_framefmt_regs,
959 ARRAY_SIZE(raw8_framefmt_regs));
960
961 case MEDIA_BUS_FMT_SRGGB10_1X10:
962 case MEDIA_BUS_FMT_SGRBG10_1X10:
963 case MEDIA_BUS_FMT_SGBRG10_1X10:
964 case MEDIA_BUS_FMT_SBGGR10_1X10:
965 return imx219_write_regs(imx219, raw10_framefmt_regs,
966 ARRAY_SIZE(raw10_framefmt_regs));
967 }
968
969 return -EINVAL;
970 }
971
972 static const struct v4l2_rect *
973 __imx219_get_pad_crop(struct imx219 *imx219, struct v4l2_subdev_pad_config *cfg,
974 unsigned int pad, enum v4l2_subdev_format_whence which)
975 {
976 switch (which) {
977 case V4L2_SUBDEV_FORMAT_TRY:
978 return v4l2_subdev_get_try_crop(&imx219->sd, cfg, pad);
979 case V4L2_SUBDEV_FORMAT_ACTIVE:
980 return &imx219->mode->crop;
981 }
982
983 return NULL;
984 }
985
986 static int imx219_get_selection(struct v4l2_subdev *sd,
987 struct v4l2_subdev_pad_config *cfg,
988 struct v4l2_subdev_selection *sel)
989 {
990 switch (sel->target) {
991 case V4L2_SEL_TGT_CROP: {
992 struct imx219 *imx219 = to_imx219(sd);
993
994 mutex_lock(&imx219->mutex);
995 sel->r = *__imx219_get_pad_crop(imx219, cfg, sel->pad,
996 sel->which);
997 mutex_unlock(&imx219->mutex);
998
999 return 0;
1000 }
1001
1002 case V4L2_SEL_TGT_NATIVE_SIZE:
1003 sel->r.top = 0;
1004 sel->r.left = 0;
1005 sel->r.width = IMX219_NATIVE_WIDTH;
1006 sel->r.height = IMX219_NATIVE_HEIGHT;
1007
1008 return 0;
1009
1010 case V4L2_SEL_TGT_CROP_DEFAULT:
1011 sel->r.top = IMX219_PIXEL_ARRAY_TOP;
1012 sel->r.left = IMX219_PIXEL_ARRAY_LEFT;
1013 sel->r.width = IMX219_PIXEL_ARRAY_WIDTH;
1014 sel->r.height = IMX219_PIXEL_ARRAY_HEIGHT;
1015
1016 return 0;
1017 }
1018
1019 return -EINVAL;
1020 }
1021
1022 static int imx219_start_streaming(struct imx219 *imx219)
1023 {
1024 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
1025 const struct imx219_reg_list *reg_list;
1026 int ret;
1027
1028 /* Apply default values of current mode */
1029 reg_list = &imx219->mode->reg_list;
1030 ret = imx219_write_regs(imx219, reg_list->regs, reg_list->num_of_regs);
1031 if (ret) {
1032 dev_err(&client->dev, "%s failed to set mode\n", __func__);
1033 return ret;
1034 }
1035
1036 ret = imx219_set_framefmt(imx219);
1037 if (ret) {
1038 dev_err(&client->dev, "%s failed to set frame format: %d\n",
1039 __func__, ret);
1040 return ret;
1041 }
1042
1043 /* Apply customized values from user */
1044 ret = __v4l2_ctrl_handler_setup(imx219->sd.ctrl_handler);
1045 if (ret)
1046 return ret;
1047
1048 /* set stream on register */
1049 return imx219_write_reg(imx219, IMX219_REG_MODE_SELECT,
1050 IMX219_REG_VALUE_08BIT, IMX219_MODE_STREAMING);
1051 }
1052
1053 static void imx219_stop_streaming(struct imx219 *imx219)
1054 {
1055 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
1056 int ret;
1057
1058 /* set stream off register */
1059 ret = imx219_write_reg(imx219, IMX219_REG_MODE_SELECT,
1060 IMX219_REG_VALUE_08BIT, IMX219_MODE_STANDBY);
1061 if (ret)
1062 dev_err(&client->dev, "%s failed to set stream\n", __func__);
1063 }
1064
1065 static int imx219_set_stream(struct v4l2_subdev *sd, int enable)
1066 {
1067 struct imx219 *imx219 = to_imx219(sd);
1068 struct i2c_client *client = v4l2_get_subdevdata(sd);
1069 int ret = 0;
1070
1071 mutex_lock(&imx219->mutex);
1072 if (imx219->streaming == enable) {
1073 mutex_unlock(&imx219->mutex);
1074 return 0;
1075 }
1076
1077 if (enable) {
1078 ret = pm_runtime_get_sync(&client->dev);
1079 if (ret < 0) {
1080 pm_runtime_put_noidle(&client->dev);
1081 goto err_unlock;
1082 }
1083
1084 /*
1085 * Apply default & customized values
1086 * and then start streaming.
1087 */
1088 ret = imx219_start_streaming(imx219);
1089 if (ret)
1090 goto err_rpm_put;
1091 } else {
1092 imx219_stop_streaming(imx219);
1093 pm_runtime_put(&client->dev);
1094 }
1095
1096 imx219->streaming = enable;
1097
1098 /* vflip and hflip cannot change during streaming */
1099 __v4l2_ctrl_grab(imx219->vflip, enable);
1100 __v4l2_ctrl_grab(imx219->hflip, enable);
1101
1102 mutex_unlock(&imx219->mutex);
1103
1104 return ret;
1105
1106 err_rpm_put:
1107 pm_runtime_put(&client->dev);
1108 err_unlock:
1109 mutex_unlock(&imx219->mutex);
1110
1111 return ret;
1112 }
1113
1114 /* Power/clock management functions */
1115 static int imx219_power_on(struct device *dev)
1116 {
1117 struct i2c_client *client = to_i2c_client(dev);
1118 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1119 struct imx219 *imx219 = to_imx219(sd);
1120 int ret;
1121
1122 ret = regulator_bulk_enable(IMX219_NUM_SUPPLIES,
1123 imx219->supplies);
1124 if (ret) {
1125 dev_err(&client->dev, "%s: failed to enable regulators\n",
1126 __func__);
1127 return ret;
1128 }
1129
1130 ret = clk_prepare_enable(imx219->xclk);
1131 if (ret) {
1132 dev_err(&client->dev, "%s: failed to enable clock\n",
1133 __func__);
1134 goto reg_off;
1135 }
1136
1137 gpiod_set_value_cansleep(imx219->reset_gpio, 1);
1138 usleep_range(IMX219_XCLR_MIN_DELAY_US,
1139 IMX219_XCLR_MIN_DELAY_US + IMX219_XCLR_DELAY_RANGE_US);
1140
1141 return 0;
1142
1143 reg_off:
1144 regulator_bulk_disable(IMX219_NUM_SUPPLIES, imx219->supplies);
1145
1146 return ret;
1147 }
1148
1149 static int imx219_power_off(struct device *dev)
1150 {
1151 struct i2c_client *client = to_i2c_client(dev);
1152 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1153 struct imx219 *imx219 = to_imx219(sd);
1154
1155 gpiod_set_value_cansleep(imx219->reset_gpio, 0);
1156 regulator_bulk_disable(IMX219_NUM_SUPPLIES, imx219->supplies);
1157 clk_disable_unprepare(imx219->xclk);
1158
1159 return 0;
1160 }
1161
1162 static int __maybe_unused imx219_suspend(struct device *dev)
1163 {
1164 struct i2c_client *client = to_i2c_client(dev);
1165 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1166 struct imx219 *imx219 = to_imx219(sd);
1167
1168 if (imx219->streaming)
1169 imx219_stop_streaming(imx219);
1170
1171 return 0;
1172 }
1173
1174 static int __maybe_unused imx219_resume(struct device *dev)
1175 {
1176 struct i2c_client *client = to_i2c_client(dev);
1177 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1178 struct imx219 *imx219 = to_imx219(sd);
1179 int ret;
1180
1181 if (imx219->streaming) {
1182 ret = imx219_start_streaming(imx219);
1183 if (ret)
1184 goto error;
1185 }
1186
1187 return 0;
1188
1189 error:
1190 imx219_stop_streaming(imx219);
1191 imx219->streaming = 0;
1192
1193 return ret;
1194 }
1195
1196 static int imx219_get_regulators(struct imx219 *imx219)
1197 {
1198 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
1199 unsigned int i;
1200
1201 for (i = 0; i < IMX219_NUM_SUPPLIES; i++)
1202 imx219->supplies[i].supply = imx219_supply_name[i];
1203
1204 return devm_regulator_bulk_get(&client->dev,
1205 IMX219_NUM_SUPPLIES,
1206 imx219->supplies);
1207 }
1208
1209 /* Verify chip ID */
1210 static int imx219_identify_module(struct imx219 *imx219)
1211 {
1212 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
1213 int ret;
1214 u32 val;
1215
1216 ret = imx219_read_reg(imx219, IMX219_REG_CHIP_ID,
1217 IMX219_REG_VALUE_16BIT, &val);
1218 if (ret) {
1219 dev_err(&client->dev, "failed to read chip id %x\n",
1220 IMX219_CHIP_ID);
1221 return ret;
1222 }
1223
1224 if (val != IMX219_CHIP_ID) {
1225 dev_err(&client->dev, "chip id mismatch: %x!=%x\n",
1226 IMX219_CHIP_ID, val);
1227 return -EIO;
1228 }
1229
1230 return 0;
1231 }
1232
1233 static const struct v4l2_subdev_core_ops imx219_core_ops = {
1234 .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
1235 .unsubscribe_event = v4l2_event_subdev_unsubscribe,
1236 };
1237
1238 static const struct v4l2_subdev_video_ops imx219_video_ops = {
1239 .s_stream = imx219_set_stream,
1240 };
1241
1242 static const struct v4l2_subdev_pad_ops imx219_pad_ops = {
1243 .enum_mbus_code = imx219_enum_mbus_code,
1244 .get_fmt = imx219_get_pad_format,
1245 .set_fmt = imx219_set_pad_format,
1246 .get_selection = imx219_get_selection,
1247 .enum_frame_size = imx219_enum_frame_size,
1248 };
1249
1250 static const struct v4l2_subdev_ops imx219_subdev_ops = {
1251 .core = &imx219_core_ops,
1252 .video = &imx219_video_ops,
1253 .pad = &imx219_pad_ops,
1254 };
1255
1256 static const struct v4l2_subdev_internal_ops imx219_internal_ops = {
1257 .open = imx219_open,
1258 };
1259
1260 /* Initialize control handlers */
1261 static int imx219_init_controls(struct imx219 *imx219)
1262 {
1263 struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
1264 struct v4l2_ctrl_handler *ctrl_hdlr;
1265 unsigned int height = imx219->mode->height;
1266 struct v4l2_fwnode_device_properties props;
1267 int exposure_max, exposure_def, hblank;
1268 int i, ret;
1269
1270 ctrl_hdlr = &imx219->ctrl_handler;
1271 ret = v4l2_ctrl_handler_init(ctrl_hdlr, 11);
1272 if (ret)
1273 return ret;
1274
1275 mutex_init(&imx219->mutex);
1276 ctrl_hdlr->lock = &imx219->mutex;
1277
1278 /* By default, PIXEL_RATE is read only */
1279 imx219->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
1280 V4L2_CID_PIXEL_RATE,
1281 IMX219_PIXEL_RATE,
1282 IMX219_PIXEL_RATE, 1,
1283 IMX219_PIXEL_RATE);
1284
1285 /* Initial vblank/hblank/exposure parameters based on current mode */
1286 imx219->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
1287 V4L2_CID_VBLANK, IMX219_VBLANK_MIN,
1288 IMX219_VTS_MAX - height, 1,
1289 imx219->mode->vts_def - height);
1290 hblank = IMX219_PPL_DEFAULT - imx219->mode->width;
1291 imx219->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
1292 V4L2_CID_HBLANK, hblank, hblank,
1293 1, hblank);
1294 if (imx219->hblank)
1295 imx219->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1296 exposure_max = imx219->mode->vts_def - 4;
1297 exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ?
1298 exposure_max : IMX219_EXPOSURE_DEFAULT;
1299 imx219->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
1300 V4L2_CID_EXPOSURE,
1301 IMX219_EXPOSURE_MIN, exposure_max,
1302 IMX219_EXPOSURE_STEP,
1303 exposure_def);
1304
1305 v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
1306 IMX219_ANA_GAIN_MIN, IMX219_ANA_GAIN_MAX,
1307 IMX219_ANA_GAIN_STEP, IMX219_ANA_GAIN_DEFAULT);
1308
1309 v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
1310 IMX219_DGTL_GAIN_MIN, IMX219_DGTL_GAIN_MAX,
1311 IMX219_DGTL_GAIN_STEP, IMX219_DGTL_GAIN_DEFAULT);
1312
1313 imx219->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
1314 V4L2_CID_HFLIP, 0, 1, 1, 0);
1315 if (imx219->hflip)
1316 imx219->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
1317
1318 imx219->vflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
1319 V4L2_CID_VFLIP, 0, 1, 1, 0);
1320 if (imx219->vflip)
1321 imx219->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
1322
1323 v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &imx219_ctrl_ops,
1324 V4L2_CID_TEST_PATTERN,
1325 ARRAY_SIZE(imx219_test_pattern_menu) - 1,
1326 0, 0, imx219_test_pattern_menu);
1327 for (i = 0; i < 4; i++) {
1328 /*
1329 * The assumption is that
1330 * V4L2_CID_TEST_PATTERN_GREENR == V4L2_CID_TEST_PATTERN_RED + 1
1331 * V4L2_CID_TEST_PATTERN_BLUE == V4L2_CID_TEST_PATTERN_RED + 2
1332 * V4L2_CID_TEST_PATTERN_GREENB == V4L2_CID_TEST_PATTERN_RED + 3
1333 */
1334 v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
1335 V4L2_CID_TEST_PATTERN_RED + i,
1336 IMX219_TESTP_COLOUR_MIN,
1337 IMX219_TESTP_COLOUR_MAX,
1338 IMX219_TESTP_COLOUR_STEP,
1339 IMX219_TESTP_COLOUR_MAX);
1340 /* The "Solid color" pattern is white by default */
1341 }
1342
1343 if (ctrl_hdlr->error) {
1344 ret = ctrl_hdlr->error;
1345 dev_err(&client->dev, "%s control init failed (%d)\n",
1346 __func__, ret);
1347 goto error;
1348 }
1349
1350 ret = v4l2_fwnode_device_parse(&client->dev, &props);
1351 if (ret)
1352 goto error;
1353
1354 ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &imx219_ctrl_ops,
1355 &props);
1356 if (ret)
1357 goto error;
1358
1359 imx219->sd.ctrl_handler = ctrl_hdlr;
1360
1361 return 0;
1362
1363 error:
1364 v4l2_ctrl_handler_free(ctrl_hdlr);
1365 mutex_destroy(&imx219->mutex);
1366
1367 return ret;
1368 }
1369
1370 static void imx219_free_controls(struct imx219 *imx219)
1371 {
1372 v4l2_ctrl_handler_free(imx219->sd.ctrl_handler);
1373 mutex_destroy(&imx219->mutex);
1374 }
1375
1376 static int imx219_check_hwcfg(struct device *dev)
1377 {
1378 struct fwnode_handle *endpoint;
1379 struct v4l2_fwnode_endpoint ep_cfg = {
1380 .bus_type = V4L2_MBUS_CSI2_DPHY
1381 };
1382 int ret = -EINVAL;
1383
1384 endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL);
1385 if (!endpoint) {
1386 dev_err(dev, "endpoint node not found\n");
1387 return -EINVAL;
1388 }
1389
1390 if (v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep_cfg)) {
1391 dev_err(dev, "could not parse endpoint\n");
1392 goto error_out;
1393 }
1394
1395 /* Check the number of MIPI CSI2 data lanes */
1396 if (ep_cfg.bus.mipi_csi2.num_data_lanes != 2) {
1397 dev_err(dev, "only 2 data lanes are currently supported\n");
1398 goto error_out;
1399 }
1400
1401 /* Check the link frequency set in device tree */
1402 if (!ep_cfg.nr_of_link_frequencies) {
1403 dev_err(dev, "link-frequency property not found in DT\n");
1404 goto error_out;
1405 }
1406
1407 if (ep_cfg.nr_of_link_frequencies != 1 ||
1408 ep_cfg.link_frequencies[0] != IMX219_DEFAULT_LINK_FREQ) {
1409 dev_err(dev, "Link frequency not supported: %lld\n",
1410 ep_cfg.link_frequencies[0]);
1411 goto error_out;
1412 }
1413
1414 ret = 0;
1415
1416 error_out:
1417 v4l2_fwnode_endpoint_free(&ep_cfg);
1418 fwnode_handle_put(endpoint);
1419
1420 return ret;
1421 }
1422
1423 static int imx219_probe(struct i2c_client *client)
1424 {
1425 struct device *dev = &client->dev;
1426 struct imx219 *imx219;
1427 int ret;
1428
1429 imx219 = devm_kzalloc(&client->dev, sizeof(*imx219), GFP_KERNEL);
1430 if (!imx219)
1431 return -ENOMEM;
1432
1433 v4l2_i2c_subdev_init(&imx219->sd, client, &imx219_subdev_ops);
1434
1435 /* Check the hardware configuration in device tree */
1436 if (imx219_check_hwcfg(dev))
1437 return -EINVAL;
1438
1439 /* Get system clock (xclk) */
1440 imx219->xclk = devm_clk_get(dev, NULL);
1441 if (IS_ERR(imx219->xclk)) {
1442 dev_err(dev, "failed to get xclk\n");
1443 return PTR_ERR(imx219->xclk);
1444 }
1445
1446 imx219->xclk_freq = clk_get_rate(imx219->xclk);
1447 if (imx219->xclk_freq != IMX219_XCLK_FREQ) {
1448 dev_err(dev, "xclk frequency not supported: %d Hz\n",
1449 imx219->xclk_freq);
1450 return -EINVAL;
1451 }
1452
1453 ret = imx219_get_regulators(imx219);
1454 if (ret) {
1455 dev_err(dev, "failed to get regulators\n");
1456 return ret;
1457 }
1458
1459 /* Request optional enable pin */
1460 imx219->reset_gpio = devm_gpiod_get_optional(dev, "reset",
1461 GPIOD_OUT_HIGH);
1462
1463 /*
1464 * The sensor must be powered for imx219_identify_module()
1465 * to be able to read the CHIP_ID register
1466 */
1467 ret = imx219_power_on(dev);
1468 if (ret)
1469 return ret;
1470
1471 ret = imx219_identify_module(imx219);
1472 if (ret)
1473 goto error_power_off;
1474
1475 /* Set default mode to max resolution */
1476 imx219->mode = &supported_modes[0];
1477
1478 /* sensor doesn't enter LP-11 state upon power up until and unless
1479 * streaming is started, so upon power up switch the modes to:
1480 * streaming -> standby
1481 */
1482 ret = imx219_write_reg(imx219, IMX219_REG_MODE_SELECT,
1483 IMX219_REG_VALUE_08BIT, IMX219_MODE_STREAMING);
1484 if (ret < 0)
1485 goto error_power_off;
1486 usleep_range(100, 110);
1487
1488 /* put sensor back to standby mode */
1489 ret = imx219_write_reg(imx219, IMX219_REG_MODE_SELECT,
1490 IMX219_REG_VALUE_08BIT, IMX219_MODE_STANDBY);
1491 if (ret < 0)
1492 goto error_power_off;
1493 usleep_range(100, 110);
1494
1495 ret = imx219_init_controls(imx219);
1496 if (ret)
1497 goto error_power_off;
1498
1499 /* Initialize subdev */
1500 imx219->sd.internal_ops = &imx219_internal_ops;
1501 imx219->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1502 imx219->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
1503
1504 /* Initialize source pad */
1505 imx219->pad.flags = MEDIA_PAD_FL_SOURCE;
1506
1507 /* Initialize default format */
1508 imx219_set_default_format(imx219);
1509
1510 ret = media_entity_pads_init(&imx219->sd.entity, 1, &imx219->pad);
1511 if (ret) {
1512 dev_err(dev, "failed to init entity pads: %d\n", ret);
1513 goto error_handler_free;
1514 }
1515
1516 ret = v4l2_async_register_subdev_sensor_common(&imx219->sd);
1517 if (ret < 0) {
1518 dev_err(dev, "failed to register sensor sub-device: %d\n", ret);
1519 goto error_media_entity;
1520 }
1521
1522 /* Enable runtime PM and turn off the device */
1523 pm_runtime_set_active(dev);
1524 pm_runtime_enable(dev);
1525 pm_runtime_idle(dev);
1526
1527 return 0;
1528
1529 error_media_entity:
1530 media_entity_cleanup(&imx219->sd.entity);
1531
1532 error_handler_free:
1533 imx219_free_controls(imx219);
1534
1535 error_power_off:
1536 imx219_power_off(dev);
1537
1538 return ret;
1539 }
1540
1541 static int imx219_remove(struct i2c_client *client)
1542 {
1543 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1544 struct imx219 *imx219 = to_imx219(sd);
1545
1546 v4l2_async_unregister_subdev(sd);
1547 media_entity_cleanup(&sd->entity);
1548 imx219_free_controls(imx219);
1549
1550 pm_runtime_disable(&client->dev);
1551 if (!pm_runtime_status_suspended(&client->dev))
1552 imx219_power_off(&client->dev);
1553 pm_runtime_set_suspended(&client->dev);
1554
1555 return 0;
1556 }
1557
1558 static const struct of_device_id imx219_dt_ids[] = {
1559 { .compatible = "sony,imx219" },
1560 { /* sentinel */ }
1561 };
1562 MODULE_DEVICE_TABLE(of, imx219_dt_ids);
1563
1564 static const struct dev_pm_ops imx219_pm_ops = {
1565 SET_SYSTEM_SLEEP_PM_OPS(imx219_suspend, imx219_resume)
1566 SET_RUNTIME_PM_OPS(imx219_power_off, imx219_power_on, NULL)
1567 };
1568
1569 static struct i2c_driver imx219_i2c_driver = {
1570 .driver = {
1571 .name = "imx219",
1572 .of_match_table = imx219_dt_ids,
1573 .pm = &imx219_pm_ops,
1574 },
1575 .probe_new = imx219_probe,
1576 .remove = imx219_remove,
1577 };
1578
1579 module_i2c_driver(imx219_i2c_driver);
1580
1581 MODULE_AUTHOR("Dave Stevenson <dave.stevenson@raspberrypi.com");
1582 MODULE_DESCRIPTION("Sony IMX219 sensor driver");
1583 MODULE_LICENSE("GPL v2");
Linux with added FPC-III support