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[mirror_ubuntu-artful-kernel.git] / drivers / media / i2c / mt9v032.c
1 /*
2 * Driver for MT9V022, MT9V024, MT9V032, and MT9V034 CMOS Image Sensors
3 *
4 * Copyright (C) 2010, Laurent Pinchart <laurent.pinchart@ideasonboard.com>
5 *
6 * Based on the MT9M001 driver,
7 *
8 * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14
15 #include <linux/clk.h>
16 #include <linux/delay.h>
17 #include <linux/gpio/consumer.h>
18 #include <linux/i2c.h>
19 #include <linux/log2.h>
20 #include <linux/mutex.h>
21 #include <linux/of.h>
22 #include <linux/regmap.h>
23 #include <linux/slab.h>
24 #include <linux/videodev2.h>
25 #include <linux/v4l2-mediabus.h>
26 #include <linux/module.h>
27
28 #include <media/i2c/mt9v032.h>
29 #include <media/v4l2-ctrls.h>
30 #include <media/v4l2-device.h>
31 #include <media/v4l2-of.h>
32 #include <media/v4l2-subdev.h>
33
34 /* The first four rows are black rows. The active area spans 753x481 pixels. */
35 #define MT9V032_PIXEL_ARRAY_HEIGHT 485
36 #define MT9V032_PIXEL_ARRAY_WIDTH 753
37
38 #define MT9V032_SYSCLK_FREQ_DEF 26600000
39
40 #define MT9V032_CHIP_VERSION 0x00
41 #define MT9V032_CHIP_ID_REV1 0x1311
42 #define MT9V032_CHIP_ID_REV3 0x1313
43 #define MT9V034_CHIP_ID_REV1 0X1324
44 #define MT9V032_COLUMN_START 0x01
45 #define MT9V032_COLUMN_START_MIN 1
46 #define MT9V032_COLUMN_START_DEF 1
47 #define MT9V032_COLUMN_START_MAX 752
48 #define MT9V032_ROW_START 0x02
49 #define MT9V032_ROW_START_MIN 4
50 #define MT9V032_ROW_START_DEF 5
51 #define MT9V032_ROW_START_MAX 482
52 #define MT9V032_WINDOW_HEIGHT 0x03
53 #define MT9V032_WINDOW_HEIGHT_MIN 1
54 #define MT9V032_WINDOW_HEIGHT_DEF 480
55 #define MT9V032_WINDOW_HEIGHT_MAX 480
56 #define MT9V032_WINDOW_WIDTH 0x04
57 #define MT9V032_WINDOW_WIDTH_MIN 1
58 #define MT9V032_WINDOW_WIDTH_DEF 752
59 #define MT9V032_WINDOW_WIDTH_MAX 752
60 #define MT9V032_HORIZONTAL_BLANKING 0x05
61 #define MT9V032_HORIZONTAL_BLANKING_MIN 43
62 #define MT9V034_HORIZONTAL_BLANKING_MIN 61
63 #define MT9V032_HORIZONTAL_BLANKING_DEF 94
64 #define MT9V032_HORIZONTAL_BLANKING_MAX 1023
65 #define MT9V032_VERTICAL_BLANKING 0x06
66 #define MT9V032_VERTICAL_BLANKING_MIN 4
67 #define MT9V034_VERTICAL_BLANKING_MIN 2
68 #define MT9V032_VERTICAL_BLANKING_DEF 45
69 #define MT9V032_VERTICAL_BLANKING_MAX 3000
70 #define MT9V034_VERTICAL_BLANKING_MAX 32288
71 #define MT9V032_CHIP_CONTROL 0x07
72 #define MT9V032_CHIP_CONTROL_MASTER_MODE (1 << 3)
73 #define MT9V032_CHIP_CONTROL_DOUT_ENABLE (1 << 7)
74 #define MT9V032_CHIP_CONTROL_SEQUENTIAL (1 << 8)
75 #define MT9V032_SHUTTER_WIDTH1 0x08
76 #define MT9V032_SHUTTER_WIDTH2 0x09
77 #define MT9V032_SHUTTER_WIDTH_CONTROL 0x0a
78 #define MT9V032_TOTAL_SHUTTER_WIDTH 0x0b
79 #define MT9V032_TOTAL_SHUTTER_WIDTH_MIN 1
80 #define MT9V034_TOTAL_SHUTTER_WIDTH_MIN 0
81 #define MT9V032_TOTAL_SHUTTER_WIDTH_DEF 480
82 #define MT9V032_TOTAL_SHUTTER_WIDTH_MAX 32767
83 #define MT9V034_TOTAL_SHUTTER_WIDTH_MAX 32765
84 #define MT9V032_RESET 0x0c
85 #define MT9V032_READ_MODE 0x0d
86 #define MT9V032_READ_MODE_ROW_BIN_MASK (3 << 0)
87 #define MT9V032_READ_MODE_ROW_BIN_SHIFT 0
88 #define MT9V032_READ_MODE_COLUMN_BIN_MASK (3 << 2)
89 #define MT9V032_READ_MODE_COLUMN_BIN_SHIFT 2
90 #define MT9V032_READ_MODE_ROW_FLIP (1 << 4)
91 #define MT9V032_READ_MODE_COLUMN_FLIP (1 << 5)
92 #define MT9V032_READ_MODE_DARK_COLUMNS (1 << 6)
93 #define MT9V032_READ_MODE_DARK_ROWS (1 << 7)
94 #define MT9V032_READ_MODE_RESERVED 0x0300
95 #define MT9V032_PIXEL_OPERATION_MODE 0x0f
96 #define MT9V034_PIXEL_OPERATION_MODE_HDR (1 << 0)
97 #define MT9V034_PIXEL_OPERATION_MODE_COLOR (1 << 1)
98 #define MT9V032_PIXEL_OPERATION_MODE_COLOR (1 << 2)
99 #define MT9V032_PIXEL_OPERATION_MODE_HDR (1 << 6)
100 #define MT9V032_ANALOG_GAIN 0x35
101 #define MT9V032_ANALOG_GAIN_MIN 16
102 #define MT9V032_ANALOG_GAIN_DEF 16
103 #define MT9V032_ANALOG_GAIN_MAX 64
104 #define MT9V032_MAX_ANALOG_GAIN 0x36
105 #define MT9V032_MAX_ANALOG_GAIN_MAX 127
106 #define MT9V032_FRAME_DARK_AVERAGE 0x42
107 #define MT9V032_DARK_AVG_THRESH 0x46
108 #define MT9V032_DARK_AVG_LOW_THRESH_MASK (255 << 0)
109 #define MT9V032_DARK_AVG_LOW_THRESH_SHIFT 0
110 #define MT9V032_DARK_AVG_HIGH_THRESH_MASK (255 << 8)
111 #define MT9V032_DARK_AVG_HIGH_THRESH_SHIFT 8
112 #define MT9V032_ROW_NOISE_CORR_CONTROL 0x70
113 #define MT9V034_ROW_NOISE_CORR_ENABLE (1 << 0)
114 #define MT9V034_ROW_NOISE_CORR_USE_BLK_AVG (1 << 1)
115 #define MT9V032_ROW_NOISE_CORR_ENABLE (1 << 5)
116 #define MT9V032_ROW_NOISE_CORR_USE_BLK_AVG (1 << 7)
117 #define MT9V032_PIXEL_CLOCK 0x74
118 #define MT9V034_PIXEL_CLOCK 0x72
119 #define MT9V032_PIXEL_CLOCK_INV_LINE (1 << 0)
120 #define MT9V032_PIXEL_CLOCK_INV_FRAME (1 << 1)
121 #define MT9V032_PIXEL_CLOCK_XOR_LINE (1 << 2)
122 #define MT9V032_PIXEL_CLOCK_CONT_LINE (1 << 3)
123 #define MT9V032_PIXEL_CLOCK_INV_PXL_CLK (1 << 4)
124 #define MT9V032_TEST_PATTERN 0x7f
125 #define MT9V032_TEST_PATTERN_DATA_MASK (1023 << 0)
126 #define MT9V032_TEST_PATTERN_DATA_SHIFT 0
127 #define MT9V032_TEST_PATTERN_USE_DATA (1 << 10)
128 #define MT9V032_TEST_PATTERN_GRAY_MASK (3 << 11)
129 #define MT9V032_TEST_PATTERN_GRAY_NONE (0 << 11)
130 #define MT9V032_TEST_PATTERN_GRAY_VERTICAL (1 << 11)
131 #define MT9V032_TEST_PATTERN_GRAY_HORIZONTAL (2 << 11)
132 #define MT9V032_TEST_PATTERN_GRAY_DIAGONAL (3 << 11)
133 #define MT9V032_TEST_PATTERN_ENABLE (1 << 13)
134 #define MT9V032_TEST_PATTERN_FLIP (1 << 14)
135 #define MT9V032_AEGC_DESIRED_BIN 0xa5
136 #define MT9V032_AEC_UPDATE_FREQUENCY 0xa6
137 #define MT9V032_AEC_LPF 0xa8
138 #define MT9V032_AGC_UPDATE_FREQUENCY 0xa9
139 #define MT9V032_AGC_LPF 0xaa
140 #define MT9V032_AEC_AGC_ENABLE 0xaf
141 #define MT9V032_AEC_ENABLE (1 << 0)
142 #define MT9V032_AGC_ENABLE (1 << 1)
143 #define MT9V034_AEC_MAX_SHUTTER_WIDTH 0xad
144 #define MT9V032_AEC_MAX_SHUTTER_WIDTH 0xbd
145 #define MT9V032_THERMAL_INFO 0xc1
146
147 enum mt9v032_model {
148 MT9V032_MODEL_V022_COLOR, /* MT9V022IX7ATC */
149 MT9V032_MODEL_V022_MONO, /* MT9V022IX7ATM */
150 MT9V032_MODEL_V024_COLOR, /* MT9V024IA7XTC */
151 MT9V032_MODEL_V024_MONO, /* MT9V024IA7XTM */
152 MT9V032_MODEL_V032_COLOR, /* MT9V032C12STM */
153 MT9V032_MODEL_V032_MONO, /* MT9V032C12STC */
154 MT9V032_MODEL_V034_COLOR,
155 MT9V032_MODEL_V034_MONO,
156 };
157
158 struct mt9v032_model_version {
159 unsigned int version;
160 const char *name;
161 };
162
163 struct mt9v032_model_data {
164 unsigned int min_row_time;
165 unsigned int min_hblank;
166 unsigned int min_vblank;
167 unsigned int max_vblank;
168 unsigned int min_shutter;
169 unsigned int max_shutter;
170 unsigned int pclk_reg;
171 unsigned int aec_max_shutter_reg;
172 const struct v4l2_ctrl_config * const aec_max_shutter_v4l2_ctrl;
173 };
174
175 struct mt9v032_model_info {
176 const struct mt9v032_model_data *data;
177 bool color;
178 };
179
180 static const struct mt9v032_model_version mt9v032_versions[] = {
181 { MT9V032_CHIP_ID_REV1, "MT9V022/MT9V032 rev1/2" },
182 { MT9V032_CHIP_ID_REV3, "MT9V022/MT9V032 rev3" },
183 { MT9V034_CHIP_ID_REV1, "MT9V024/MT9V034 rev1" },
184 };
185
186 struct mt9v032 {
187 struct v4l2_subdev subdev;
188 struct media_pad pad;
189
190 struct v4l2_mbus_framefmt format;
191 struct v4l2_rect crop;
192 unsigned int hratio;
193 unsigned int vratio;
194
195 struct v4l2_ctrl_handler ctrls;
196 struct {
197 struct v4l2_ctrl *link_freq;
198 struct v4l2_ctrl *pixel_rate;
199 };
200
201 struct mutex power_lock;
202 int power_count;
203
204 struct regmap *regmap;
205 struct clk *clk;
206 struct gpio_desc *reset_gpio;
207 struct gpio_desc *standby_gpio;
208
209 struct mt9v032_platform_data *pdata;
210 const struct mt9v032_model_info *model;
211 const struct mt9v032_model_version *version;
212
213 u32 sysclk;
214 u16 aec_agc;
215 u16 hblank;
216 struct {
217 struct v4l2_ctrl *test_pattern;
218 struct v4l2_ctrl *test_pattern_color;
219 };
220 };
221
222 static struct mt9v032 *to_mt9v032(struct v4l2_subdev *sd)
223 {
224 return container_of(sd, struct mt9v032, subdev);
225 }
226
227 static int
228 mt9v032_update_aec_agc(struct mt9v032 *mt9v032, u16 which, int enable)
229 {
230 struct regmap *map = mt9v032->regmap;
231 u16 value = mt9v032->aec_agc;
232 int ret;
233
234 if (enable)
235 value |= which;
236 else
237 value &= ~which;
238
239 ret = regmap_write(map, MT9V032_AEC_AGC_ENABLE, value);
240 if (ret < 0)
241 return ret;
242
243 mt9v032->aec_agc = value;
244 return 0;
245 }
246
247 static int
248 mt9v032_update_hblank(struct mt9v032 *mt9v032)
249 {
250 struct v4l2_rect *crop = &mt9v032->crop;
251 unsigned int min_hblank = mt9v032->model->data->min_hblank;
252 unsigned int hblank;
253
254 if (mt9v032->version->version == MT9V034_CHIP_ID_REV1)
255 min_hblank += (mt9v032->hratio - 1) * 10;
256 min_hblank = max_t(int, mt9v032->model->data->min_row_time - crop->width,
257 min_hblank);
258 hblank = max_t(unsigned int, mt9v032->hblank, min_hblank);
259
260 return regmap_write(mt9v032->regmap, MT9V032_HORIZONTAL_BLANKING,
261 hblank);
262 }
263
264 static int mt9v032_power_on(struct mt9v032 *mt9v032)
265 {
266 struct regmap *map = mt9v032->regmap;
267 int ret;
268
269 if (mt9v032->reset_gpio)
270 gpiod_set_value_cansleep(mt9v032->reset_gpio, 1);
271
272 ret = clk_set_rate(mt9v032->clk, mt9v032->sysclk);
273 if (ret < 0)
274 return ret;
275
276 /* System clock has to be enabled before releasing the reset */
277 ret = clk_prepare_enable(mt9v032->clk);
278 if (ret)
279 return ret;
280
281 udelay(1);
282
283 if (mt9v032->reset_gpio) {
284 gpiod_set_value_cansleep(mt9v032->reset_gpio, 0);
285
286 /* After releasing reset we need to wait 10 clock cycles
287 * before accessing the sensor over I2C. As the minimum SYSCLK
288 * frequency is 13MHz, waiting 1µs will be enough in the worst
289 * case.
290 */
291 udelay(1);
292 }
293
294 /* Reset the chip and stop data read out */
295 ret = regmap_write(map, MT9V032_RESET, 1);
296 if (ret < 0)
297 return ret;
298
299 ret = regmap_write(map, MT9V032_RESET, 0);
300 if (ret < 0)
301 return ret;
302
303 return regmap_write(map, MT9V032_CHIP_CONTROL,
304 MT9V032_CHIP_CONTROL_MASTER_MODE);
305 }
306
307 static void mt9v032_power_off(struct mt9v032 *mt9v032)
308 {
309 clk_disable_unprepare(mt9v032->clk);
310 }
311
312 static int __mt9v032_set_power(struct mt9v032 *mt9v032, bool on)
313 {
314 struct regmap *map = mt9v032->regmap;
315 int ret;
316
317 if (!on) {
318 mt9v032_power_off(mt9v032);
319 return 0;
320 }
321
322 ret = mt9v032_power_on(mt9v032);
323 if (ret < 0)
324 return ret;
325
326 /* Configure the pixel clock polarity */
327 if (mt9v032->pdata && mt9v032->pdata->clk_pol) {
328 ret = regmap_write(map, mt9v032->model->data->pclk_reg,
329 MT9V032_PIXEL_CLOCK_INV_PXL_CLK);
330 if (ret < 0)
331 return ret;
332 }
333
334 /* Disable the noise correction algorithm and restore the controls. */
335 ret = regmap_write(map, MT9V032_ROW_NOISE_CORR_CONTROL, 0);
336 if (ret < 0)
337 return ret;
338
339 return v4l2_ctrl_handler_setup(&mt9v032->ctrls);
340 }
341
342 /* -----------------------------------------------------------------------------
343 * V4L2 subdev video operations
344 */
345
346 static struct v4l2_mbus_framefmt *
347 __mt9v032_get_pad_format(struct mt9v032 *mt9v032, struct v4l2_subdev_pad_config *cfg,
348 unsigned int pad, enum v4l2_subdev_format_whence which)
349 {
350 switch (which) {
351 case V4L2_SUBDEV_FORMAT_TRY:
352 return v4l2_subdev_get_try_format(&mt9v032->subdev, cfg, pad);
353 case V4L2_SUBDEV_FORMAT_ACTIVE:
354 return &mt9v032->format;
355 default:
356 return NULL;
357 }
358 }
359
360 static struct v4l2_rect *
361 __mt9v032_get_pad_crop(struct mt9v032 *mt9v032, struct v4l2_subdev_pad_config *cfg,
362 unsigned int pad, enum v4l2_subdev_format_whence which)
363 {
364 switch (which) {
365 case V4L2_SUBDEV_FORMAT_TRY:
366 return v4l2_subdev_get_try_crop(&mt9v032->subdev, cfg, pad);
367 case V4L2_SUBDEV_FORMAT_ACTIVE:
368 return &mt9v032->crop;
369 default:
370 return NULL;
371 }
372 }
373
374 static int mt9v032_s_stream(struct v4l2_subdev *subdev, int enable)
375 {
376 const u16 mode = MT9V032_CHIP_CONTROL_DOUT_ENABLE
377 | MT9V032_CHIP_CONTROL_SEQUENTIAL;
378 struct mt9v032 *mt9v032 = to_mt9v032(subdev);
379 struct v4l2_rect *crop = &mt9v032->crop;
380 struct regmap *map = mt9v032->regmap;
381 unsigned int hbin;
382 unsigned int vbin;
383 int ret;
384
385 if (!enable)
386 return regmap_update_bits(map, MT9V032_CHIP_CONTROL, mode, 0);
387
388 /* Configure the window size and row/column bin */
389 hbin = fls(mt9v032->hratio) - 1;
390 vbin = fls(mt9v032->vratio) - 1;
391 ret = regmap_update_bits(map, MT9V032_READ_MODE,
392 ~MT9V032_READ_MODE_RESERVED,
393 hbin << MT9V032_READ_MODE_COLUMN_BIN_SHIFT |
394 vbin << MT9V032_READ_MODE_ROW_BIN_SHIFT);
395 if (ret < 0)
396 return ret;
397
398 ret = regmap_write(map, MT9V032_COLUMN_START, crop->left);
399 if (ret < 0)
400 return ret;
401
402 ret = regmap_write(map, MT9V032_ROW_START, crop->top);
403 if (ret < 0)
404 return ret;
405
406 ret = regmap_write(map, MT9V032_WINDOW_WIDTH, crop->width);
407 if (ret < 0)
408 return ret;
409
410 ret = regmap_write(map, MT9V032_WINDOW_HEIGHT, crop->height);
411 if (ret < 0)
412 return ret;
413
414 ret = mt9v032_update_hblank(mt9v032);
415 if (ret < 0)
416 return ret;
417
418 /* Switch to master "normal" mode */
419 return regmap_update_bits(map, MT9V032_CHIP_CONTROL, mode, mode);
420 }
421
422 static int mt9v032_enum_mbus_code(struct v4l2_subdev *subdev,
423 struct v4l2_subdev_pad_config *cfg,
424 struct v4l2_subdev_mbus_code_enum *code)
425 {
426 if (code->index > 0)
427 return -EINVAL;
428
429 code->code = MEDIA_BUS_FMT_SGRBG10_1X10;
430 return 0;
431 }
432
433 static int mt9v032_enum_frame_size(struct v4l2_subdev *subdev,
434 struct v4l2_subdev_pad_config *cfg,
435 struct v4l2_subdev_frame_size_enum *fse)
436 {
437 if (fse->index >= 3 || fse->code != MEDIA_BUS_FMT_SGRBG10_1X10)
438 return -EINVAL;
439
440 fse->min_width = MT9V032_WINDOW_WIDTH_DEF / (1 << fse->index);
441 fse->max_width = fse->min_width;
442 fse->min_height = MT9V032_WINDOW_HEIGHT_DEF / (1 << fse->index);
443 fse->max_height = fse->min_height;
444
445 return 0;
446 }
447
448 static int mt9v032_get_format(struct v4l2_subdev *subdev,
449 struct v4l2_subdev_pad_config *cfg,
450 struct v4l2_subdev_format *format)
451 {
452 struct mt9v032 *mt9v032 = to_mt9v032(subdev);
453
454 format->format = *__mt9v032_get_pad_format(mt9v032, cfg, format->pad,
455 format->which);
456 return 0;
457 }
458
459 static void mt9v032_configure_pixel_rate(struct mt9v032 *mt9v032)
460 {
461 struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev);
462 int ret;
463
464 ret = v4l2_ctrl_s_ctrl_int64(mt9v032->pixel_rate,
465 mt9v032->sysclk / mt9v032->hratio);
466 if (ret < 0)
467 dev_warn(&client->dev, "failed to set pixel rate (%d)\n", ret);
468 }
469
470 static unsigned int mt9v032_calc_ratio(unsigned int input, unsigned int output)
471 {
472 /* Compute the power-of-two binning factor closest to the input size to
473 * output size ratio. Given that the output size is bounded by input/4
474 * and input, a generic implementation would be an ineffective luxury.
475 */
476 if (output * 3 > input * 2)
477 return 1;
478 if (output * 3 > input)
479 return 2;
480 return 4;
481 }
482
483 static int mt9v032_set_format(struct v4l2_subdev *subdev,
484 struct v4l2_subdev_pad_config *cfg,
485 struct v4l2_subdev_format *format)
486 {
487 struct mt9v032 *mt9v032 = to_mt9v032(subdev);
488 struct v4l2_mbus_framefmt *__format;
489 struct v4l2_rect *__crop;
490 unsigned int width;
491 unsigned int height;
492 unsigned int hratio;
493 unsigned int vratio;
494
495 __crop = __mt9v032_get_pad_crop(mt9v032, cfg, format->pad,
496 format->which);
497
498 /* Clamp the width and height to avoid dividing by zero. */
499 width = clamp(ALIGN(format->format.width, 2),
500 max_t(unsigned int, __crop->width / 4,
501 MT9V032_WINDOW_WIDTH_MIN),
502 __crop->width);
503 height = clamp(ALIGN(format->format.height, 2),
504 max_t(unsigned int, __crop->height / 4,
505 MT9V032_WINDOW_HEIGHT_MIN),
506 __crop->height);
507
508 hratio = mt9v032_calc_ratio(__crop->width, width);
509 vratio = mt9v032_calc_ratio(__crop->height, height);
510
511 __format = __mt9v032_get_pad_format(mt9v032, cfg, format->pad,
512 format->which);
513 __format->width = __crop->width / hratio;
514 __format->height = __crop->height / vratio;
515
516 if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
517 mt9v032->hratio = hratio;
518 mt9v032->vratio = vratio;
519 mt9v032_configure_pixel_rate(mt9v032);
520 }
521
522 format->format = *__format;
523
524 return 0;
525 }
526
527 static int mt9v032_get_selection(struct v4l2_subdev *subdev,
528 struct v4l2_subdev_pad_config *cfg,
529 struct v4l2_subdev_selection *sel)
530 {
531 struct mt9v032 *mt9v032 = to_mt9v032(subdev);
532
533 if (sel->target != V4L2_SEL_TGT_CROP)
534 return -EINVAL;
535
536 sel->r = *__mt9v032_get_pad_crop(mt9v032, cfg, sel->pad, sel->which);
537 return 0;
538 }
539
540 static int mt9v032_set_selection(struct v4l2_subdev *subdev,
541 struct v4l2_subdev_pad_config *cfg,
542 struct v4l2_subdev_selection *sel)
543 {
544 struct mt9v032 *mt9v032 = to_mt9v032(subdev);
545 struct v4l2_mbus_framefmt *__format;
546 struct v4l2_rect *__crop;
547 struct v4l2_rect rect;
548
549 if (sel->target != V4L2_SEL_TGT_CROP)
550 return -EINVAL;
551
552 /* Clamp the crop rectangle boundaries and align them to a non multiple
553 * of 2 pixels to ensure a GRBG Bayer pattern.
554 */
555 rect.left = clamp(ALIGN(sel->r.left + 1, 2) - 1,
556 MT9V032_COLUMN_START_MIN,
557 MT9V032_COLUMN_START_MAX);
558 rect.top = clamp(ALIGN(sel->r.top + 1, 2) - 1,
559 MT9V032_ROW_START_MIN,
560 MT9V032_ROW_START_MAX);
561 rect.width = clamp_t(unsigned int, ALIGN(sel->r.width, 2),
562 MT9V032_WINDOW_WIDTH_MIN,
563 MT9V032_WINDOW_WIDTH_MAX);
564 rect.height = clamp_t(unsigned int, ALIGN(sel->r.height, 2),
565 MT9V032_WINDOW_HEIGHT_MIN,
566 MT9V032_WINDOW_HEIGHT_MAX);
567
568 rect.width = min_t(unsigned int,
569 rect.width, MT9V032_PIXEL_ARRAY_WIDTH - rect.left);
570 rect.height = min_t(unsigned int,
571 rect.height, MT9V032_PIXEL_ARRAY_HEIGHT - rect.top);
572
573 __crop = __mt9v032_get_pad_crop(mt9v032, cfg, sel->pad, sel->which);
574
575 if (rect.width != __crop->width || rect.height != __crop->height) {
576 /* Reset the output image size if the crop rectangle size has
577 * been modified.
578 */
579 __format = __mt9v032_get_pad_format(mt9v032, cfg, sel->pad,
580 sel->which);
581 __format->width = rect.width;
582 __format->height = rect.height;
583 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
584 mt9v032->hratio = 1;
585 mt9v032->vratio = 1;
586 mt9v032_configure_pixel_rate(mt9v032);
587 }
588 }
589
590 *__crop = rect;
591 sel->r = rect;
592
593 return 0;
594 }
595
596 /* -----------------------------------------------------------------------------
597 * V4L2 subdev control operations
598 */
599
600 #define V4L2_CID_TEST_PATTERN_COLOR (V4L2_CID_USER_BASE | 0x1001)
601 /*
602 * Value between 1 and 64 to set the desired bin. This is effectively a measure
603 * of how bright the image is supposed to be. Both AGC and AEC try to reach
604 * this.
605 */
606 #define V4L2_CID_AEGC_DESIRED_BIN (V4L2_CID_USER_BASE | 0x1002)
607 /*
608 * LPF is the low pass filter capability of the chip. Both AEC and AGC have
609 * this setting. This limits the speed in which AGC/AEC adjust their settings.
610 * Possible values are 0-2. 0 means no LPF. For 1 and 2 this equation is used:
611 *
612 * if |(calculated new exp - current exp)| > (current exp / 4)
613 * next exp = calculated new exp
614 * else
615 * next exp = current exp + ((calculated new exp - current exp) / 2^LPF)
616 */
617 #define V4L2_CID_AEC_LPF (V4L2_CID_USER_BASE | 0x1003)
618 #define V4L2_CID_AGC_LPF (V4L2_CID_USER_BASE | 0x1004)
619 /*
620 * Value between 0 and 15. This is the number of frames being skipped before
621 * updating the auto exposure/gain.
622 */
623 #define V4L2_CID_AEC_UPDATE_INTERVAL (V4L2_CID_USER_BASE | 0x1005)
624 #define V4L2_CID_AGC_UPDATE_INTERVAL (V4L2_CID_USER_BASE | 0x1006)
625 /*
626 * Maximum shutter width used for AEC.
627 */
628 #define V4L2_CID_AEC_MAX_SHUTTER_WIDTH (V4L2_CID_USER_BASE | 0x1007)
629
630 static int mt9v032_s_ctrl(struct v4l2_ctrl *ctrl)
631 {
632 struct mt9v032 *mt9v032 =
633 container_of(ctrl->handler, struct mt9v032, ctrls);
634 struct regmap *map = mt9v032->regmap;
635 u32 freq;
636 u16 data;
637
638 switch (ctrl->id) {
639 case V4L2_CID_AUTOGAIN:
640 return mt9v032_update_aec_agc(mt9v032, MT9V032_AGC_ENABLE,
641 ctrl->val);
642
643 case V4L2_CID_GAIN:
644 return regmap_write(map, MT9V032_ANALOG_GAIN, ctrl->val);
645
646 case V4L2_CID_EXPOSURE_AUTO:
647 return mt9v032_update_aec_agc(mt9v032, MT9V032_AEC_ENABLE,
648 !ctrl->val);
649
650 case V4L2_CID_EXPOSURE:
651 return regmap_write(map, MT9V032_TOTAL_SHUTTER_WIDTH,
652 ctrl->val);
653
654 case V4L2_CID_HBLANK:
655 mt9v032->hblank = ctrl->val;
656 return mt9v032_update_hblank(mt9v032);
657
658 case V4L2_CID_VBLANK:
659 return regmap_write(map, MT9V032_VERTICAL_BLANKING,
660 ctrl->val);
661
662 case V4L2_CID_PIXEL_RATE:
663 case V4L2_CID_LINK_FREQ:
664 if (mt9v032->link_freq == NULL)
665 break;
666
667 freq = mt9v032->pdata->link_freqs[mt9v032->link_freq->val];
668 *mt9v032->pixel_rate->p_new.p_s64 = freq;
669 mt9v032->sysclk = freq;
670 break;
671
672 case V4L2_CID_TEST_PATTERN:
673 switch (mt9v032->test_pattern->val) {
674 case 0:
675 data = 0;
676 break;
677 case 1:
678 data = MT9V032_TEST_PATTERN_GRAY_VERTICAL
679 | MT9V032_TEST_PATTERN_ENABLE;
680 break;
681 case 2:
682 data = MT9V032_TEST_PATTERN_GRAY_HORIZONTAL
683 | MT9V032_TEST_PATTERN_ENABLE;
684 break;
685 case 3:
686 data = MT9V032_TEST_PATTERN_GRAY_DIAGONAL
687 | MT9V032_TEST_PATTERN_ENABLE;
688 break;
689 default:
690 data = (mt9v032->test_pattern_color->val <<
691 MT9V032_TEST_PATTERN_DATA_SHIFT)
692 | MT9V032_TEST_PATTERN_USE_DATA
693 | MT9V032_TEST_PATTERN_ENABLE
694 | MT9V032_TEST_PATTERN_FLIP;
695 break;
696 }
697 return regmap_write(map, MT9V032_TEST_PATTERN, data);
698
699 case V4L2_CID_AEGC_DESIRED_BIN:
700 return regmap_write(map, MT9V032_AEGC_DESIRED_BIN, ctrl->val);
701
702 case V4L2_CID_AEC_LPF:
703 return regmap_write(map, MT9V032_AEC_LPF, ctrl->val);
704
705 case V4L2_CID_AGC_LPF:
706 return regmap_write(map, MT9V032_AGC_LPF, ctrl->val);
707
708 case V4L2_CID_AEC_UPDATE_INTERVAL:
709 return regmap_write(map, MT9V032_AEC_UPDATE_FREQUENCY,
710 ctrl->val);
711
712 case V4L2_CID_AGC_UPDATE_INTERVAL:
713 return regmap_write(map, MT9V032_AGC_UPDATE_FREQUENCY,
714 ctrl->val);
715
716 case V4L2_CID_AEC_MAX_SHUTTER_WIDTH:
717 return regmap_write(map,
718 mt9v032->model->data->aec_max_shutter_reg,
719 ctrl->val);
720 }
721
722 return 0;
723 }
724
725 static const struct v4l2_ctrl_ops mt9v032_ctrl_ops = {
726 .s_ctrl = mt9v032_s_ctrl,
727 };
728
729 static const char * const mt9v032_test_pattern_menu[] = {
730 "Disabled",
731 "Gray Vertical Shade",
732 "Gray Horizontal Shade",
733 "Gray Diagonal Shade",
734 "Plain",
735 };
736
737 static const struct v4l2_ctrl_config mt9v032_test_pattern_color = {
738 .ops = &mt9v032_ctrl_ops,
739 .id = V4L2_CID_TEST_PATTERN_COLOR,
740 .type = V4L2_CTRL_TYPE_INTEGER,
741 .name = "Test Pattern Color",
742 .min = 0,
743 .max = 1023,
744 .step = 1,
745 .def = 0,
746 .flags = 0,
747 };
748
749 static const struct v4l2_ctrl_config mt9v032_aegc_controls[] = {
750 {
751 .ops = &mt9v032_ctrl_ops,
752 .id = V4L2_CID_AEGC_DESIRED_BIN,
753 .type = V4L2_CTRL_TYPE_INTEGER,
754 .name = "AEC/AGC Desired Bin",
755 .min = 1,
756 .max = 64,
757 .step = 1,
758 .def = 58,
759 .flags = 0,
760 }, {
761 .ops = &mt9v032_ctrl_ops,
762 .id = V4L2_CID_AEC_LPF,
763 .type = V4L2_CTRL_TYPE_INTEGER,
764 .name = "AEC Low Pass Filter",
765 .min = 0,
766 .max = 2,
767 .step = 1,
768 .def = 0,
769 .flags = 0,
770 }, {
771 .ops = &mt9v032_ctrl_ops,
772 .id = V4L2_CID_AGC_LPF,
773 .type = V4L2_CTRL_TYPE_INTEGER,
774 .name = "AGC Low Pass Filter",
775 .min = 0,
776 .max = 2,
777 .step = 1,
778 .def = 2,
779 .flags = 0,
780 }, {
781 .ops = &mt9v032_ctrl_ops,
782 .id = V4L2_CID_AEC_UPDATE_INTERVAL,
783 .type = V4L2_CTRL_TYPE_INTEGER,
784 .name = "AEC Update Interval",
785 .min = 0,
786 .max = 16,
787 .step = 1,
788 .def = 2,
789 .flags = 0,
790 }, {
791 .ops = &mt9v032_ctrl_ops,
792 .id = V4L2_CID_AGC_UPDATE_INTERVAL,
793 .type = V4L2_CTRL_TYPE_INTEGER,
794 .name = "AGC Update Interval",
795 .min = 0,
796 .max = 16,
797 .step = 1,
798 .def = 2,
799 .flags = 0,
800 }
801 };
802
803 static const struct v4l2_ctrl_config mt9v032_aec_max_shutter_width = {
804 .ops = &mt9v032_ctrl_ops,
805 .id = V4L2_CID_AEC_MAX_SHUTTER_WIDTH,
806 .type = V4L2_CTRL_TYPE_INTEGER,
807 .name = "AEC Max Shutter Width",
808 .min = 1,
809 .max = 2047,
810 .step = 1,
811 .def = 480,
812 .flags = 0,
813 };
814
815 static const struct v4l2_ctrl_config mt9v034_aec_max_shutter_width = {
816 .ops = &mt9v032_ctrl_ops,
817 .id = V4L2_CID_AEC_MAX_SHUTTER_WIDTH,
818 .type = V4L2_CTRL_TYPE_INTEGER,
819 .name = "AEC Max Shutter Width",
820 .min = 1,
821 .max = 32765,
822 .step = 1,
823 .def = 480,
824 .flags = 0,
825 };
826
827 /* -----------------------------------------------------------------------------
828 * V4L2 subdev core operations
829 */
830
831 static int mt9v032_set_power(struct v4l2_subdev *subdev, int on)
832 {
833 struct mt9v032 *mt9v032 = to_mt9v032(subdev);
834 int ret = 0;
835
836 mutex_lock(&mt9v032->power_lock);
837
838 /* If the power count is modified from 0 to != 0 or from != 0 to 0,
839 * update the power state.
840 */
841 if (mt9v032->power_count == !on) {
842 ret = __mt9v032_set_power(mt9v032, !!on);
843 if (ret < 0)
844 goto done;
845 }
846
847 /* Update the power count. */
848 mt9v032->power_count += on ? 1 : -1;
849 WARN_ON(mt9v032->power_count < 0);
850
851 done:
852 mutex_unlock(&mt9v032->power_lock);
853 return ret;
854 }
855
856 /* -----------------------------------------------------------------------------
857 * V4L2 subdev internal operations
858 */
859
860 static int mt9v032_registered(struct v4l2_subdev *subdev)
861 {
862 struct i2c_client *client = v4l2_get_subdevdata(subdev);
863 struct mt9v032 *mt9v032 = to_mt9v032(subdev);
864 unsigned int i;
865 u32 version;
866 int ret;
867
868 dev_info(&client->dev, "Probing MT9V032 at address 0x%02x\n",
869 client->addr);
870
871 ret = mt9v032_power_on(mt9v032);
872 if (ret < 0) {
873 dev_err(&client->dev, "MT9V032 power up failed\n");
874 return ret;
875 }
876
877 /* Read and check the sensor version */
878 ret = regmap_read(mt9v032->regmap, MT9V032_CHIP_VERSION, &version);
879 if (ret < 0) {
880 dev_err(&client->dev, "Failed reading chip version\n");
881 return ret;
882 }
883
884 for (i = 0; i < ARRAY_SIZE(mt9v032_versions); ++i) {
885 if (mt9v032_versions[i].version == version) {
886 mt9v032->version = &mt9v032_versions[i];
887 break;
888 }
889 }
890
891 if (mt9v032->version == NULL) {
892 dev_err(&client->dev, "Unsupported chip version 0x%04x\n",
893 version);
894 return -ENODEV;
895 }
896
897 mt9v032_power_off(mt9v032);
898
899 dev_info(&client->dev, "%s detected at address 0x%02x\n",
900 mt9v032->version->name, client->addr);
901
902 mt9v032_configure_pixel_rate(mt9v032);
903
904 return ret;
905 }
906
907 static int mt9v032_open(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh)
908 {
909 struct mt9v032 *mt9v032 = to_mt9v032(subdev);
910 struct v4l2_mbus_framefmt *format;
911 struct v4l2_rect *crop;
912
913 crop = v4l2_subdev_get_try_crop(subdev, fh->pad, 0);
914 crop->left = MT9V032_COLUMN_START_DEF;
915 crop->top = MT9V032_ROW_START_DEF;
916 crop->width = MT9V032_WINDOW_WIDTH_DEF;
917 crop->height = MT9V032_WINDOW_HEIGHT_DEF;
918
919 format = v4l2_subdev_get_try_format(subdev, fh->pad, 0);
920
921 if (mt9v032->model->color)
922 format->code = MEDIA_BUS_FMT_SGRBG10_1X10;
923 else
924 format->code = MEDIA_BUS_FMT_Y10_1X10;
925
926 format->width = MT9V032_WINDOW_WIDTH_DEF;
927 format->height = MT9V032_WINDOW_HEIGHT_DEF;
928 format->field = V4L2_FIELD_NONE;
929 format->colorspace = V4L2_COLORSPACE_SRGB;
930
931 return mt9v032_set_power(subdev, 1);
932 }
933
934 static int mt9v032_close(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh)
935 {
936 return mt9v032_set_power(subdev, 0);
937 }
938
939 static struct v4l2_subdev_core_ops mt9v032_subdev_core_ops = {
940 .s_power = mt9v032_set_power,
941 };
942
943 static struct v4l2_subdev_video_ops mt9v032_subdev_video_ops = {
944 .s_stream = mt9v032_s_stream,
945 };
946
947 static struct v4l2_subdev_pad_ops mt9v032_subdev_pad_ops = {
948 .enum_mbus_code = mt9v032_enum_mbus_code,
949 .enum_frame_size = mt9v032_enum_frame_size,
950 .get_fmt = mt9v032_get_format,
951 .set_fmt = mt9v032_set_format,
952 .get_selection = mt9v032_get_selection,
953 .set_selection = mt9v032_set_selection,
954 };
955
956 static struct v4l2_subdev_ops mt9v032_subdev_ops = {
957 .core = &mt9v032_subdev_core_ops,
958 .video = &mt9v032_subdev_video_ops,
959 .pad = &mt9v032_subdev_pad_ops,
960 };
961
962 static const struct v4l2_subdev_internal_ops mt9v032_subdev_internal_ops = {
963 .registered = mt9v032_registered,
964 .open = mt9v032_open,
965 .close = mt9v032_close,
966 };
967
968 static const struct regmap_config mt9v032_regmap_config = {
969 .reg_bits = 8,
970 .val_bits = 16,
971 .max_register = 0xff,
972 .cache_type = REGCACHE_RBTREE,
973 };
974
975 /* -----------------------------------------------------------------------------
976 * Driver initialization and probing
977 */
978
979 static struct mt9v032_platform_data *
980 mt9v032_get_pdata(struct i2c_client *client)
981 {
982 struct mt9v032_platform_data *pdata = NULL;
983 struct v4l2_of_endpoint endpoint;
984 struct device_node *np;
985 struct property *prop;
986
987 if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node)
988 return client->dev.platform_data;
989
990 np = of_graph_get_next_endpoint(client->dev.of_node, NULL);
991 if (!np)
992 return NULL;
993
994 if (v4l2_of_parse_endpoint(np, &endpoint) < 0)
995 goto done;
996
997 pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
998 if (!pdata)
999 goto done;
1000
1001 prop = of_find_property(np, "link-frequencies", NULL);
1002 if (prop) {
1003 u64 *link_freqs;
1004 size_t size = prop->length / sizeof(*link_freqs);
1005
1006 link_freqs = devm_kcalloc(&client->dev, size,
1007 sizeof(*link_freqs), GFP_KERNEL);
1008 if (!link_freqs)
1009 goto done;
1010
1011 if (of_property_read_u64_array(np, "link-frequencies",
1012 link_freqs, size) < 0)
1013 goto done;
1014
1015 pdata->link_freqs = link_freqs;
1016 pdata->link_def_freq = link_freqs[0];
1017 }
1018
1019 pdata->clk_pol = !!(endpoint.bus.parallel.flags &
1020 V4L2_MBUS_PCLK_SAMPLE_RISING);
1021
1022 done:
1023 of_node_put(np);
1024 return pdata;
1025 }
1026
1027 static int mt9v032_probe(struct i2c_client *client,
1028 const struct i2c_device_id *did)
1029 {
1030 struct mt9v032_platform_data *pdata = mt9v032_get_pdata(client);
1031 struct mt9v032 *mt9v032;
1032 unsigned int i;
1033 int ret;
1034
1035 mt9v032 = devm_kzalloc(&client->dev, sizeof(*mt9v032), GFP_KERNEL);
1036 if (!mt9v032)
1037 return -ENOMEM;
1038
1039 mt9v032->regmap = devm_regmap_init_i2c(client, &mt9v032_regmap_config);
1040 if (IS_ERR(mt9v032->regmap))
1041 return PTR_ERR(mt9v032->regmap);
1042
1043 mt9v032->clk = devm_clk_get(&client->dev, NULL);
1044 if (IS_ERR(mt9v032->clk))
1045 return PTR_ERR(mt9v032->clk);
1046
1047 mt9v032->reset_gpio = devm_gpiod_get_optional(&client->dev, "reset",
1048 GPIOD_OUT_HIGH);
1049 if (IS_ERR(mt9v032->reset_gpio))
1050 return PTR_ERR(mt9v032->reset_gpio);
1051
1052 mt9v032->standby_gpio = devm_gpiod_get_optional(&client->dev, "standby",
1053 GPIOD_OUT_LOW);
1054 if (IS_ERR(mt9v032->standby_gpio))
1055 return PTR_ERR(mt9v032->standby_gpio);
1056
1057 mutex_init(&mt9v032->power_lock);
1058 mt9v032->pdata = pdata;
1059 mt9v032->model = (const void *)did->driver_data;
1060
1061 v4l2_ctrl_handler_init(&mt9v032->ctrls, 11 +
1062 ARRAY_SIZE(mt9v032_aegc_controls));
1063
1064 v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
1065 V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
1066 v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
1067 V4L2_CID_GAIN, MT9V032_ANALOG_GAIN_MIN,
1068 MT9V032_ANALOG_GAIN_MAX, 1, MT9V032_ANALOG_GAIN_DEF);
1069 v4l2_ctrl_new_std_menu(&mt9v032->ctrls, &mt9v032_ctrl_ops,
1070 V4L2_CID_EXPOSURE_AUTO, V4L2_EXPOSURE_MANUAL, 0,
1071 V4L2_EXPOSURE_AUTO);
1072 v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
1073 V4L2_CID_EXPOSURE, mt9v032->model->data->min_shutter,
1074 mt9v032->model->data->max_shutter, 1,
1075 MT9V032_TOTAL_SHUTTER_WIDTH_DEF);
1076 v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
1077 V4L2_CID_HBLANK, mt9v032->model->data->min_hblank,
1078 MT9V032_HORIZONTAL_BLANKING_MAX, 1,
1079 MT9V032_HORIZONTAL_BLANKING_DEF);
1080 v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
1081 V4L2_CID_VBLANK, mt9v032->model->data->min_vblank,
1082 mt9v032->model->data->max_vblank, 1,
1083 MT9V032_VERTICAL_BLANKING_DEF);
1084 mt9v032->test_pattern = v4l2_ctrl_new_std_menu_items(&mt9v032->ctrls,
1085 &mt9v032_ctrl_ops, V4L2_CID_TEST_PATTERN,
1086 ARRAY_SIZE(mt9v032_test_pattern_menu) - 1, 0, 0,
1087 mt9v032_test_pattern_menu);
1088 mt9v032->test_pattern_color = v4l2_ctrl_new_custom(&mt9v032->ctrls,
1089 &mt9v032_test_pattern_color, NULL);
1090
1091 v4l2_ctrl_new_custom(&mt9v032->ctrls,
1092 mt9v032->model->data->aec_max_shutter_v4l2_ctrl,
1093 NULL);
1094 for (i = 0; i < ARRAY_SIZE(mt9v032_aegc_controls); ++i)
1095 v4l2_ctrl_new_custom(&mt9v032->ctrls, &mt9v032_aegc_controls[i],
1096 NULL);
1097
1098 v4l2_ctrl_cluster(2, &mt9v032->test_pattern);
1099
1100 mt9v032->pixel_rate =
1101 v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
1102 V4L2_CID_PIXEL_RATE, 1, INT_MAX, 1, 1);
1103
1104 if (pdata && pdata->link_freqs) {
1105 unsigned int def = 0;
1106
1107 for (i = 0; pdata->link_freqs[i]; ++i) {
1108 if (pdata->link_freqs[i] == pdata->link_def_freq)
1109 def = i;
1110 }
1111
1112 mt9v032->link_freq =
1113 v4l2_ctrl_new_int_menu(&mt9v032->ctrls,
1114 &mt9v032_ctrl_ops,
1115 V4L2_CID_LINK_FREQ, i - 1, def,
1116 pdata->link_freqs);
1117 v4l2_ctrl_cluster(2, &mt9v032->link_freq);
1118 }
1119
1120
1121 mt9v032->subdev.ctrl_handler = &mt9v032->ctrls;
1122
1123 if (mt9v032->ctrls.error) {
1124 dev_err(&client->dev, "control initialization error %d\n",
1125 mt9v032->ctrls.error);
1126 ret = mt9v032->ctrls.error;
1127 goto err;
1128 }
1129
1130 mt9v032->crop.left = MT9V032_COLUMN_START_DEF;
1131 mt9v032->crop.top = MT9V032_ROW_START_DEF;
1132 mt9v032->crop.width = MT9V032_WINDOW_WIDTH_DEF;
1133 mt9v032->crop.height = MT9V032_WINDOW_HEIGHT_DEF;
1134
1135 if (mt9v032->model->color)
1136 mt9v032->format.code = MEDIA_BUS_FMT_SGRBG10_1X10;
1137 else
1138 mt9v032->format.code = MEDIA_BUS_FMT_Y10_1X10;
1139
1140 mt9v032->format.width = MT9V032_WINDOW_WIDTH_DEF;
1141 mt9v032->format.height = MT9V032_WINDOW_HEIGHT_DEF;
1142 mt9v032->format.field = V4L2_FIELD_NONE;
1143 mt9v032->format.colorspace = V4L2_COLORSPACE_SRGB;
1144
1145 mt9v032->hratio = 1;
1146 mt9v032->vratio = 1;
1147
1148 mt9v032->aec_agc = MT9V032_AEC_ENABLE | MT9V032_AGC_ENABLE;
1149 mt9v032->hblank = MT9V032_HORIZONTAL_BLANKING_DEF;
1150 mt9v032->sysclk = MT9V032_SYSCLK_FREQ_DEF;
1151
1152 v4l2_i2c_subdev_init(&mt9v032->subdev, client, &mt9v032_subdev_ops);
1153 mt9v032->subdev.internal_ops = &mt9v032_subdev_internal_ops;
1154 mt9v032->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1155
1156 mt9v032->pad.flags = MEDIA_PAD_FL_SOURCE;
1157 ret = media_entity_pads_init(&mt9v032->subdev.entity, 1, &mt9v032->pad);
1158 if (ret < 0)
1159 goto err;
1160
1161 mt9v032->subdev.dev = &client->dev;
1162 ret = v4l2_async_register_subdev(&mt9v032->subdev);
1163 if (ret < 0)
1164 goto err;
1165
1166 return 0;
1167
1168 err:
1169 media_entity_cleanup(&mt9v032->subdev.entity);
1170 v4l2_ctrl_handler_free(&mt9v032->ctrls);
1171 return ret;
1172 }
1173
1174 static int mt9v032_remove(struct i2c_client *client)
1175 {
1176 struct v4l2_subdev *subdev = i2c_get_clientdata(client);
1177 struct mt9v032 *mt9v032 = to_mt9v032(subdev);
1178
1179 v4l2_async_unregister_subdev(subdev);
1180 v4l2_ctrl_handler_free(&mt9v032->ctrls);
1181 media_entity_cleanup(&subdev->entity);
1182
1183 return 0;
1184 }
1185
1186 static const struct mt9v032_model_data mt9v032_model_data[] = {
1187 {
1188 /* MT9V022, MT9V032 revisions 1/2/3 */
1189 .min_row_time = 660,
1190 .min_hblank = MT9V032_HORIZONTAL_BLANKING_MIN,
1191 .min_vblank = MT9V032_VERTICAL_BLANKING_MIN,
1192 .max_vblank = MT9V032_VERTICAL_BLANKING_MAX,
1193 .min_shutter = MT9V032_TOTAL_SHUTTER_WIDTH_MIN,
1194 .max_shutter = MT9V032_TOTAL_SHUTTER_WIDTH_MAX,
1195 .pclk_reg = MT9V032_PIXEL_CLOCK,
1196 .aec_max_shutter_reg = MT9V032_AEC_MAX_SHUTTER_WIDTH,
1197 .aec_max_shutter_v4l2_ctrl = &mt9v032_aec_max_shutter_width,
1198 }, {
1199 /* MT9V024, MT9V034 */
1200 .min_row_time = 690,
1201 .min_hblank = MT9V034_HORIZONTAL_BLANKING_MIN,
1202 .min_vblank = MT9V034_VERTICAL_BLANKING_MIN,
1203 .max_vblank = MT9V034_VERTICAL_BLANKING_MAX,
1204 .min_shutter = MT9V034_TOTAL_SHUTTER_WIDTH_MIN,
1205 .max_shutter = MT9V034_TOTAL_SHUTTER_WIDTH_MAX,
1206 .pclk_reg = MT9V034_PIXEL_CLOCK,
1207 .aec_max_shutter_reg = MT9V034_AEC_MAX_SHUTTER_WIDTH,
1208 .aec_max_shutter_v4l2_ctrl = &mt9v034_aec_max_shutter_width,
1209 },
1210 };
1211
1212 static const struct mt9v032_model_info mt9v032_models[] = {
1213 [MT9V032_MODEL_V022_COLOR] = {
1214 .data = &mt9v032_model_data[0],
1215 .color = true,
1216 },
1217 [MT9V032_MODEL_V022_MONO] = {
1218 .data = &mt9v032_model_data[0],
1219 .color = false,
1220 },
1221 [MT9V032_MODEL_V024_COLOR] = {
1222 .data = &mt9v032_model_data[1],
1223 .color = true,
1224 },
1225 [MT9V032_MODEL_V024_MONO] = {
1226 .data = &mt9v032_model_data[1],
1227 .color = false,
1228 },
1229 [MT9V032_MODEL_V032_COLOR] = {
1230 .data = &mt9v032_model_data[0],
1231 .color = true,
1232 },
1233 [MT9V032_MODEL_V032_MONO] = {
1234 .data = &mt9v032_model_data[0],
1235 .color = false,
1236 },
1237 [MT9V032_MODEL_V034_COLOR] = {
1238 .data = &mt9v032_model_data[1],
1239 .color = true,
1240 },
1241 [MT9V032_MODEL_V034_MONO] = {
1242 .data = &mt9v032_model_data[1],
1243 .color = false,
1244 },
1245 };
1246
1247 static const struct i2c_device_id mt9v032_id[] = {
1248 { "mt9v022", (kernel_ulong_t)&mt9v032_models[MT9V032_MODEL_V022_COLOR] },
1249 { "mt9v022m", (kernel_ulong_t)&mt9v032_models[MT9V032_MODEL_V022_MONO] },
1250 { "mt9v024", (kernel_ulong_t)&mt9v032_models[MT9V032_MODEL_V024_COLOR] },
1251 { "mt9v024m", (kernel_ulong_t)&mt9v032_models[MT9V032_MODEL_V024_MONO] },
1252 { "mt9v032", (kernel_ulong_t)&mt9v032_models[MT9V032_MODEL_V032_COLOR] },
1253 { "mt9v032m", (kernel_ulong_t)&mt9v032_models[MT9V032_MODEL_V032_MONO] },
1254 { "mt9v034", (kernel_ulong_t)&mt9v032_models[MT9V032_MODEL_V034_COLOR] },
1255 { "mt9v034m", (kernel_ulong_t)&mt9v032_models[MT9V032_MODEL_V034_MONO] },
1256 { }
1257 };
1258 MODULE_DEVICE_TABLE(i2c, mt9v032_id);
1259
1260 #if IS_ENABLED(CONFIG_OF)
1261 static const struct of_device_id mt9v032_of_match[] = {
1262 { .compatible = "aptina,mt9v022" },
1263 { .compatible = "aptina,mt9v022m" },
1264 { .compatible = "aptina,mt9v024" },
1265 { .compatible = "aptina,mt9v024m" },
1266 { .compatible = "aptina,mt9v032" },
1267 { .compatible = "aptina,mt9v032m" },
1268 { .compatible = "aptina,mt9v034" },
1269 { .compatible = "aptina,mt9v034m" },
1270 { /* Sentinel */ }
1271 };
1272 MODULE_DEVICE_TABLE(of, mt9v032_of_match);
1273 #endif
1274
1275 static struct i2c_driver mt9v032_driver = {
1276 .driver = {
1277 .name = "mt9v032",
1278 .of_match_table = of_match_ptr(mt9v032_of_match),
1279 },
1280 .probe = mt9v032_probe,
1281 .remove = mt9v032_remove,
1282 .id_table = mt9v032_id,
1283 };
1284
1285 module_i2c_driver(mt9v032_driver);
1286
1287 MODULE_DESCRIPTION("Aptina MT9V032 Camera driver");
1288 MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
1289 MODULE_LICENSE("GPL");
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