drivers/media/i2c/mt9v032.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Driver for MT9V022, MT9V024, MT9V032, and MT9V034 CMOS Image Sensors
   4  *
   5  * Copyright (C) 2010, Laurent Pinchart <laurent.pinchart@ideasonboard.com>
   6  *
   7  * Based on the MT9M001 driver,
   8  *
   9  * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
  10  */
  11
  12 #include <linux/clk.h>
  13 #include <linux/delay.h>
  14 #include <linux/gpio/consumer.h>
  15 #include <linux/i2c.h>
  16 #include <linux/log2.h>
  17 #include <linux/mutex.h>
  18 #include <linux/of.h>
  19 #include <linux/of_graph.h>
  20 #include <linux/regmap.h>
  21 #include <linux/slab.h>
  22 #include <linux/videodev2.h>
  23 #include <linux/v4l2-mediabus.h>
  24 #include <linux/module.h>
  25
  26 #include <media/i2c/mt9v032.h>
  27 #include <media/v4l2-ctrls.h>
  28 #include <media/v4l2-device.h>
  29 #include <media/v4l2-fwnode.h>
  30 #include <media/v4l2-subdev.h>
  31
  32 /* The first four rows are black rows. The active area spans 753x481 pixels. */
  33 #define MT9V032_PIXEL_ARRAY_HEIGHT                      485
  34 #define MT9V032_PIXEL_ARRAY_WIDTH                       753
  35
  36 #define MT9V032_SYSCLK_FREQ_DEF                         26600000
  37
  38 #define MT9V032_CHIP_VERSION                            0x00
  39 #define         MT9V032_CHIP_ID_REV1                    0x1311
  40 #define         MT9V032_CHIP_ID_REV3                    0x1313
  41 #define         MT9V034_CHIP_ID_REV1                    0X1324
  42 #define MT9V032_COLUMN_START                            0x01
  43 #define         MT9V032_COLUMN_START_MIN                1
  44 #define         MT9V032_COLUMN_START_DEF                1
  45 #define         MT9V032_COLUMN_START_MAX                752
  46 #define MT9V032_ROW_START                               0x02
  47 #define         MT9V032_ROW_START_MIN                   4
  48 #define         MT9V032_ROW_START_DEF                   5
  49 #define         MT9V032_ROW_START_MAX                   482
  50 #define MT9V032_WINDOW_HEIGHT                           0x03
  51 #define         MT9V032_WINDOW_HEIGHT_MIN               1
  52 #define         MT9V032_WINDOW_HEIGHT_DEF               480
  53 #define         MT9V032_WINDOW_HEIGHT_MAX               480
  54 #define MT9V032_WINDOW_WIDTH                            0x04
  55 #define         MT9V032_WINDOW_WIDTH_MIN                1
  56 #define         MT9V032_WINDOW_WIDTH_DEF                752
  57 #define         MT9V032_WINDOW_WIDTH_MAX                752
  58 #define MT9V032_HORIZONTAL_BLANKING                     0x05
  59 #define         MT9V032_HORIZONTAL_BLANKING_MIN         43
  60 #define         MT9V034_HORIZONTAL_BLANKING_MIN         61
  61 #define         MT9V032_HORIZONTAL_BLANKING_DEF         94
  62 #define         MT9V032_HORIZONTAL_BLANKING_MAX         1023
  63 #define MT9V032_VERTICAL_BLANKING                       0x06
  64 #define         MT9V032_VERTICAL_BLANKING_MIN           4
  65 #define         MT9V034_VERTICAL_BLANKING_MIN           2
  66 #define         MT9V032_VERTICAL_BLANKING_DEF           45
  67 #define         MT9V032_VERTICAL_BLANKING_MAX           3000
  68 #define         MT9V034_VERTICAL_BLANKING_MAX           32288
  69 #define MT9V032_CHIP_CONTROL                            0x07
  70 #define         MT9V032_CHIP_CONTROL_MASTER_MODE        (1 << 3)
  71 #define         MT9V032_CHIP_CONTROL_DOUT_ENABLE        (1 << 7)
  72 #define         MT9V032_CHIP_CONTROL_SEQUENTIAL         (1 << 8)
  73 #define MT9V032_SHUTTER_WIDTH1                          0x08
  74 #define MT9V032_SHUTTER_WIDTH2                          0x09
  75 #define MT9V032_SHUTTER_WIDTH_CONTROL                   0x0a
  76 #define MT9V032_TOTAL_SHUTTER_WIDTH                     0x0b
  77 #define         MT9V032_TOTAL_SHUTTER_WIDTH_MIN         1
  78 #define         MT9V034_TOTAL_SHUTTER_WIDTH_MIN         0
  79 #define         MT9V032_TOTAL_SHUTTER_WIDTH_DEF         480
  80 #define         MT9V032_TOTAL_SHUTTER_WIDTH_MAX         32767
  81 #define         MT9V034_TOTAL_SHUTTER_WIDTH_MAX         32765
  82 #define MT9V032_RESET                                   0x0c
  83 #define MT9V032_READ_MODE                               0x0d
  84 #define         MT9V032_READ_MODE_ROW_BIN_MASK          (3 << 0)
  85 #define         MT9V032_READ_MODE_ROW_BIN_SHIFT         0
  86 #define         MT9V032_READ_MODE_COLUMN_BIN_MASK       (3 << 2)
  87 #define         MT9V032_READ_MODE_COLUMN_BIN_SHIFT      2
  88 #define         MT9V032_READ_MODE_ROW_FLIP              (1 << 4)
  89 #define         MT9V032_READ_MODE_COLUMN_FLIP           (1 << 5)
  90 #define         MT9V032_READ_MODE_DARK_COLUMNS          (1 << 6)
  91 #define         MT9V032_READ_MODE_DARK_ROWS             (1 << 7)
  92 #define         MT9V032_READ_MODE_RESERVED              0x0300
  93 #define MT9V032_PIXEL_OPERATION_MODE                    0x0f
  94 #define         MT9V034_PIXEL_OPERATION_MODE_HDR        (1 << 0)
  95 #define         MT9V034_PIXEL_OPERATION_MODE_COLOR      (1 << 1)
  96 #define         MT9V032_PIXEL_OPERATION_MODE_COLOR      (1 << 2)
  97 #define         MT9V032_PIXEL_OPERATION_MODE_HDR        (1 << 6)
  98 #define MT9V032_ANALOG_GAIN                             0x35
  99 #define         MT9V032_ANALOG_GAIN_MIN                 16
 100 #define         MT9V032_ANALOG_GAIN_DEF                 16
 101 #define         MT9V032_ANALOG_GAIN_MAX                 64
 102 #define MT9V032_MAX_ANALOG_GAIN                         0x36
 103 #define         MT9V032_MAX_ANALOG_GAIN_MAX             127
 104 #define MT9V032_FRAME_DARK_AVERAGE                      0x42
 105 #define MT9V032_DARK_AVG_THRESH                         0x46
 106 #define         MT9V032_DARK_AVG_LOW_THRESH_MASK        (255 << 0)
 107 #define         MT9V032_DARK_AVG_LOW_THRESH_SHIFT       0
 108 #define         MT9V032_DARK_AVG_HIGH_THRESH_MASK       (255 << 8)
 109 #define         MT9V032_DARK_AVG_HIGH_THRESH_SHIFT      8
 110 #define MT9V032_ROW_NOISE_CORR_CONTROL                  0x70
 111 #define         MT9V034_ROW_NOISE_CORR_ENABLE           (1 << 0)
 112 #define         MT9V034_ROW_NOISE_CORR_USE_BLK_AVG      (1 << 1)
 113 #define         MT9V032_ROW_NOISE_CORR_ENABLE           (1 << 5)
 114 #define         MT9V032_ROW_NOISE_CORR_USE_BLK_AVG      (1 << 7)
 115 #define MT9V032_PIXEL_CLOCK                             0x74
 116 #define MT9V034_PIXEL_CLOCK                             0x72
 117 #define         MT9V032_PIXEL_CLOCK_INV_LINE            (1 << 0)
 118 #define         MT9V032_PIXEL_CLOCK_INV_FRAME           (1 << 1)
 119 #define         MT9V032_PIXEL_CLOCK_XOR_LINE            (1 << 2)
 120 #define         MT9V032_PIXEL_CLOCK_CONT_LINE           (1 << 3)
 121 #define         MT9V032_PIXEL_CLOCK_INV_PXL_CLK         (1 << 4)
 122 #define MT9V032_TEST_PATTERN                            0x7f
 123 #define         MT9V032_TEST_PATTERN_DATA_MASK          (1023 << 0)
 124 #define         MT9V032_TEST_PATTERN_DATA_SHIFT         0
 125 #define         MT9V032_TEST_PATTERN_USE_DATA           (1 << 10)
 126 #define         MT9V032_TEST_PATTERN_GRAY_MASK          (3 << 11)
 127 #define         MT9V032_TEST_PATTERN_GRAY_NONE          (0 << 11)
 128 #define         MT9V032_TEST_PATTERN_GRAY_VERTICAL      (1 << 11)
 129 #define         MT9V032_TEST_PATTERN_GRAY_HORIZONTAL    (2 << 11)
 130 #define         MT9V032_TEST_PATTERN_GRAY_DIAGONAL      (3 << 11)
 131 #define         MT9V032_TEST_PATTERN_ENABLE             (1 << 13)
 132 #define         MT9V032_TEST_PATTERN_FLIP               (1 << 14)
 133 #define MT9V032_AEGC_DESIRED_BIN                        0xa5
 134 #define MT9V032_AEC_UPDATE_FREQUENCY                    0xa6
 135 #define MT9V032_AEC_LPF                                 0xa8
 136 #define MT9V032_AGC_UPDATE_FREQUENCY                    0xa9
 137 #define MT9V032_AGC_LPF                                 0xaa
 138 #define MT9V032_AEC_AGC_ENABLE                          0xaf
 139 #define         MT9V032_AEC_ENABLE                      (1 << 0)
 140 #define         MT9V032_AGC_ENABLE                      (1 << 1)
 141 #define MT9V034_AEC_MAX_SHUTTER_WIDTH                   0xad
 142 #define MT9V032_AEC_MAX_SHUTTER_WIDTH                   0xbd
 143 #define MT9V032_THERMAL_INFO                            0xc1
 144
 145 enum mt9v032_model {
 146         MT9V032_MODEL_V022_COLOR,       /* MT9V022IX7ATC */
 147         MT9V032_MODEL_V022_MONO,        /* MT9V022IX7ATM */
 148         MT9V032_MODEL_V024_COLOR,       /* MT9V024IA7XTC */
 149         MT9V032_MODEL_V024_MONO,        /* MT9V024IA7XTM */
 150         MT9V032_MODEL_V032_COLOR,       /* MT9V032C12STM */
 151         MT9V032_MODEL_V032_MONO,        /* MT9V032C12STC */
 152         MT9V032_MODEL_V034_COLOR,
 153         MT9V032_MODEL_V034_MONO,
 154 };
 155
 156 struct mt9v032_model_version {
 157         unsigned int version;
 158         const char *name;
 159 };
 160
 161 struct mt9v032_model_data {
 162         unsigned int min_row_time;
 163         unsigned int min_hblank;
 164         unsigned int min_vblank;
 165         unsigned int max_vblank;
 166         unsigned int min_shutter;
 167         unsigned int max_shutter;
 168         unsigned int pclk_reg;
 169         unsigned int aec_max_shutter_reg;
 170         const struct v4l2_ctrl_config * const aec_max_shutter_v4l2_ctrl;
 171 };
 172
 173 struct mt9v032_model_info {
 174         const struct mt9v032_model_data *data;
 175         bool color;
 176 };
 177
 178 static const struct mt9v032_model_version mt9v032_versions[] = {
 179         { MT9V032_CHIP_ID_REV1, "MT9V022/MT9V032 rev1/2" },
 180         { MT9V032_CHIP_ID_REV3, "MT9V022/MT9V032 rev3" },
 181         { MT9V034_CHIP_ID_REV1, "MT9V024/MT9V034 rev1" },
 182 };
 183
 184 struct mt9v032 {
 185         struct v4l2_subdev subdev;
 186         struct media_pad pad;
 187
 188         struct v4l2_mbus_framefmt format;
 189         struct v4l2_rect crop;
 190         unsigned int hratio;
 191         unsigned int vratio;
 192
 193         struct v4l2_ctrl_handler ctrls;
 194         struct {
 195                 struct v4l2_ctrl *link_freq;
 196                 struct v4l2_ctrl *pixel_rate;
 197         };
 198
 199         struct mutex power_lock;
 200         int power_count;
 201
 202         struct regmap *regmap;
 203         struct clk *clk;
 204         struct gpio_desc *reset_gpio;
 205         struct gpio_desc *standby_gpio;
 206
 207         struct mt9v032_platform_data *pdata;
 208         const struct mt9v032_model_info *model;
 209         const struct mt9v032_model_version *version;
 210
 211         u32 sysclk;
 212         u16 aec_agc;
 213         u16 hblank;
 214         struct {
 215                 struct v4l2_ctrl *test_pattern;
 216                 struct v4l2_ctrl *test_pattern_color;
 217         };
 218 };
 219
 220 static struct mt9v032 *to_mt9v032(struct v4l2_subdev *sd)
 221 {
 222         return container_of(sd, struct mt9v032, subdev);
 223 }
 224
 225 static int
 226 mt9v032_update_aec_agc(struct mt9v032 *mt9v032, u16 which, int enable)
 227 {
 228         struct regmap *map = mt9v032->regmap;
 229         u16 value = mt9v032->aec_agc;
 230         int ret;
 231
 232         if (enable)
 233                 value |= which;
 234         else
 235                 value &= ~which;
 236
 237         ret = regmap_write(map, MT9V032_AEC_AGC_ENABLE, value);
 238         if (ret < 0)
 239                 return ret;
 240
 241         mt9v032->aec_agc = value;
 242         return 0;
 243 }
 244
 245 static int
 246 mt9v032_update_hblank(struct mt9v032 *mt9v032)
 247 {
 248         struct v4l2_rect *crop = &mt9v032->crop;
 249         unsigned int min_hblank = mt9v032->model->data->min_hblank;
 250         unsigned int hblank;
 251
 252         if (mt9v032->version->version == MT9V034_CHIP_ID_REV1)
 253                 min_hblank += (mt9v032->hratio - 1) * 10;
 254         min_hblank = max_t(int, mt9v032->model->data->min_row_time - crop->width,
 255                            min_hblank);
 256         hblank = max_t(unsigned int, mt9v032->hblank, min_hblank);
 257
 258         return regmap_write(mt9v032->regmap, MT9V032_HORIZONTAL_BLANKING,
 259                             hblank);
 260 }
 261
 262 static int mt9v032_power_on(struct mt9v032 *mt9v032)
 263 {
 264         struct regmap *map = mt9v032->regmap;
 265         int ret;
 266
 267         gpiod_set_value_cansleep(mt9v032->reset_gpio, 1);
 268
 269         ret = clk_set_rate(mt9v032->clk, mt9v032->sysclk);
 270         if (ret < 0)
 271                 return ret;
 272
 273         /* System clock has to be enabled before releasing the reset */
 274         ret = clk_prepare_enable(mt9v032->clk);
 275         if (ret)
 276                 return ret;
 277
 278         udelay(1);
 279
 280         if (mt9v032->reset_gpio) {
 281                 gpiod_set_value_cansleep(mt9v032->reset_gpio, 0);
 282
 283                 /* After releasing reset we need to wait 10 clock cycles
 284                  * before accessing the sensor over I2C. As the minimum SYSCLK
 285                  * frequency is 13MHz, waiting 1µs will be enough in the worst
 286                  * case.
 287                  */
 288                 udelay(1);
 289         }
 290
 291         /* Reset the chip and stop data read out */
 292         ret = regmap_write(map, MT9V032_RESET, 1);
 293         if (ret < 0)
 294                 goto err;
 295
 296         ret = regmap_write(map, MT9V032_RESET, 0);
 297         if (ret < 0)
 298                 goto err;
 299
 300         ret = regmap_write(map, MT9V032_CHIP_CONTROL,
 301                            MT9V032_CHIP_CONTROL_MASTER_MODE);
 302         if (ret < 0)
 303                 goto err;
 304
 305         return 0;
 306
 307 err:
 308         clk_disable_unprepare(mt9v032->clk);
 309         return ret;
 310 }
 311
 312 static void mt9v032_power_off(struct mt9v032 *mt9v032)
 313 {
 314         clk_disable_unprepare(mt9v032->clk);
 315 }
 316
 317 static int __mt9v032_set_power(struct mt9v032 *mt9v032, bool on)
 318 {
 319         struct regmap *map = mt9v032->regmap;
 320         int ret;
 321
 322         if (!on) {
 323                 mt9v032_power_off(mt9v032);
 324                 return 0;
 325         }
 326
 327         ret = mt9v032_power_on(mt9v032);
 328         if (ret < 0)
 329                 return ret;
 330
 331         /* Configure the pixel clock polarity */
 332         if (mt9v032->pdata && mt9v032->pdata->clk_pol) {
 333                 ret = regmap_write(map, mt9v032->model->data->pclk_reg,
 334                                 MT9V032_PIXEL_CLOCK_INV_PXL_CLK);
 335                 if (ret < 0)
 336                         return ret;
 337         }
 338
 339         /* Disable the noise correction algorithm and restore the controls. */
 340         ret = regmap_write(map, MT9V032_ROW_NOISE_CORR_CONTROL, 0);
 341         if (ret < 0)
 342                 return ret;
 343
 344         return v4l2_ctrl_handler_setup(&mt9v032->ctrls);
 345 }
 346
 347 /* -----------------------------------------------------------------------------
 348  * V4L2 subdev video operations
 349  */
 350
 351 static struct v4l2_mbus_framefmt *
 352 __mt9v032_get_pad_format(struct mt9v032 *mt9v032,
 353                          struct v4l2_subdev_state *sd_state,
 354                          unsigned int pad, enum v4l2_subdev_format_whence which)
 355 {
 356         switch (which) {
 357         case V4L2_SUBDEV_FORMAT_TRY:
 358                 return v4l2_subdev_get_try_format(&mt9v032->subdev, sd_state,
 359                                                   pad);
 360         case V4L2_SUBDEV_FORMAT_ACTIVE:
 361                 return &mt9v032->format;
 362         default:
 363                 return NULL;
 364         }
 365 }
 366
 367 static struct v4l2_rect *
 368 __mt9v032_get_pad_crop(struct mt9v032 *mt9v032,
 369                        struct v4l2_subdev_state *sd_state,
 370                        unsigned int pad, enum v4l2_subdev_format_whence which)
 371 {
 372         switch (which) {
 373         case V4L2_SUBDEV_FORMAT_TRY:
 374                 return v4l2_subdev_get_try_crop(&mt9v032->subdev, sd_state,
 375                                                 pad);
 376         case V4L2_SUBDEV_FORMAT_ACTIVE:
 377                 return &mt9v032->crop;
 378         default:
 379                 return NULL;
 380         }
 381 }
 382
 383 static int mt9v032_s_stream(struct v4l2_subdev *subdev, int enable)
 384 {
 385         const u16 mode = MT9V032_CHIP_CONTROL_DOUT_ENABLE
 386                        | MT9V032_CHIP_CONTROL_SEQUENTIAL;
 387         struct mt9v032 *mt9v032 = to_mt9v032(subdev);
 388         struct v4l2_rect *crop = &mt9v032->crop;
 389         struct regmap *map = mt9v032->regmap;
 390         unsigned int hbin;
 391         unsigned int vbin;
 392         int ret;
 393
 394         if (!enable)
 395                 return regmap_update_bits(map, MT9V032_CHIP_CONTROL, mode, 0);
 396
 397         /* Configure the window size and row/column bin */
 398         hbin = fls(mt9v032->hratio) - 1;
 399         vbin = fls(mt9v032->vratio) - 1;
 400         ret = regmap_update_bits(map, MT9V032_READ_MODE,
 401                                  ~MT9V032_READ_MODE_RESERVED,
 402                                  hbin << MT9V032_READ_MODE_COLUMN_BIN_SHIFT |
 403                                  vbin << MT9V032_READ_MODE_ROW_BIN_SHIFT);
 404         if (ret < 0)
 405                 return ret;
 406
 407         ret = regmap_write(map, MT9V032_COLUMN_START, crop->left);
 408         if (ret < 0)
 409                 return ret;
 410
 411         ret = regmap_write(map, MT9V032_ROW_START, crop->top);
 412         if (ret < 0)
 413                 return ret;
 414
 415         ret = regmap_write(map, MT9V032_WINDOW_WIDTH, crop->width);
 416         if (ret < 0)
 417                 return ret;
 418
 419         ret = regmap_write(map, MT9V032_WINDOW_HEIGHT, crop->height);
 420         if (ret < 0)
 421                 return ret;
 422
 423         ret = mt9v032_update_hblank(mt9v032);
 424         if (ret < 0)
 425                 return ret;
 426
 427         /* Switch to master "normal" mode */
 428         return regmap_update_bits(map, MT9V032_CHIP_CONTROL, mode, mode);
 429 }
 430
 431 static int mt9v032_enum_mbus_code(struct v4l2_subdev *subdev,
 432                                   struct v4l2_subdev_state *sd_state,
 433                                   struct v4l2_subdev_mbus_code_enum *code)
 434 {
 435         struct mt9v032 *mt9v032 = to_mt9v032(subdev);
 436
 437         if (code->index > 0)
 438                 return -EINVAL;
 439
 440         code->code = mt9v032->format.code;
 441         return 0;
 442 }
 443
 444 static int mt9v032_enum_frame_size(struct v4l2_subdev *subdev,
 445                                    struct v4l2_subdev_state *sd_state,
 446                                    struct v4l2_subdev_frame_size_enum *fse)
 447 {
 448         struct mt9v032 *mt9v032 = to_mt9v032(subdev);
 449
 450         if (fse->index >= 3)
 451                 return -EINVAL;
 452         if (mt9v032->format.code != fse->code)
 453                 return -EINVAL;
 454
 455         fse->min_width = MT9V032_WINDOW_WIDTH_DEF / (1 << fse->index);
 456         fse->max_width = fse->min_width;
 457         fse->min_height = MT9V032_WINDOW_HEIGHT_DEF / (1 << fse->index);
 458         fse->max_height = fse->min_height;
 459
 460         return 0;
 461 }
 462
 463 static int mt9v032_get_format(struct v4l2_subdev *subdev,
 464                               struct v4l2_subdev_state *sd_state,
 465                               struct v4l2_subdev_format *format)
 466 {
 467         struct mt9v032 *mt9v032 = to_mt9v032(subdev);
 468
 469         format->format = *__mt9v032_get_pad_format(mt9v032, sd_state,
 470                                                    format->pad,
 471                                                    format->which);
 472         return 0;
 473 }
 474
 475 static void mt9v032_configure_pixel_rate(struct mt9v032 *mt9v032)
 476 {
 477         struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev);
 478         int ret;
 479
 480         ret = v4l2_ctrl_s_ctrl_int64(mt9v032->pixel_rate,
 481                                      mt9v032->sysclk / mt9v032->hratio);
 482         if (ret < 0)
 483                 dev_warn(&client->dev, "failed to set pixel rate (%d)\n", ret);
 484 }
 485
 486 static unsigned int mt9v032_calc_ratio(unsigned int input, unsigned int output)
 487 {
 488         /* Compute the power-of-two binning factor closest to the input size to
 489          * output size ratio. Given that the output size is bounded by input/4
 490          * and input, a generic implementation would be an ineffective luxury.
 491          */
 492         if (output * 3 > input * 2)
 493                 return 1;
 494         if (output * 3 > input)
 495                 return 2;
 496         return 4;
 497 }
 498
 499 static int mt9v032_set_format(struct v4l2_subdev *subdev,
 500                               struct v4l2_subdev_state *sd_state,
 501                               struct v4l2_subdev_format *format)
 502 {
 503         struct mt9v032 *mt9v032 = to_mt9v032(subdev);
 504         struct v4l2_mbus_framefmt *__format;
 505         struct v4l2_rect *__crop;
 506         unsigned int width;
 507         unsigned int height;
 508         unsigned int hratio;
 509         unsigned int vratio;
 510
 511         __crop = __mt9v032_get_pad_crop(mt9v032, sd_state, format->pad,
 512                                         format->which);
 513
 514         /* Clamp the width and height to avoid dividing by zero. */
 515         width = clamp(ALIGN(format->format.width, 2),
 516                       max_t(unsigned int, __crop->width / 4,
 517                             MT9V032_WINDOW_WIDTH_MIN),
 518                       __crop->width);
 519         height = clamp(ALIGN(format->format.height, 2),
 520                        max_t(unsigned int, __crop->height / 4,
 521                              MT9V032_WINDOW_HEIGHT_MIN),
 522                        __crop->height);
 523
 524         hratio = mt9v032_calc_ratio(__crop->width, width);
 525         vratio = mt9v032_calc_ratio(__crop->height, height);
 526
 527         __format = __mt9v032_get_pad_format(mt9v032, sd_state, format->pad,
 528                                             format->which);
 529         __format->width = __crop->width / hratio;
 530         __format->height = __crop->height / vratio;
 531
 532         if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
 533                 mt9v032->hratio = hratio;
 534                 mt9v032->vratio = vratio;
 535                 mt9v032_configure_pixel_rate(mt9v032);
 536         }
 537
 538         format->format = *__format;
 539
 540         return 0;
 541 }
 542
 543 static int mt9v032_get_selection(struct v4l2_subdev *subdev,
 544                                  struct v4l2_subdev_state *sd_state,
 545                                  struct v4l2_subdev_selection *sel)
 546 {
 547         struct mt9v032 *mt9v032 = to_mt9v032(subdev);
 548
 549         if (sel->target != V4L2_SEL_TGT_CROP)
 550                 return -EINVAL;
 551
 552         sel->r = *__mt9v032_get_pad_crop(mt9v032, sd_state, sel->pad,
 553                                          sel->which);
 554         return 0;
 555 }
 556
 557 static int mt9v032_set_selection(struct v4l2_subdev *subdev,
 558                                  struct v4l2_subdev_state *sd_state,
 559                                  struct v4l2_subdev_selection *sel)
 560 {
 561         struct mt9v032 *mt9v032 = to_mt9v032(subdev);
 562         struct v4l2_mbus_framefmt *__format;
 563         struct v4l2_rect *__crop;
 564         struct v4l2_rect rect;
 565
 566         if (sel->target != V4L2_SEL_TGT_CROP)
 567                 return -EINVAL;
 568
 569         /* Clamp the crop rectangle boundaries and align them to a non multiple
 570          * of 2 pixels to ensure a GRBG Bayer pattern.
 571          */
 572         rect.left = clamp(ALIGN(sel->r.left + 1, 2) - 1,
 573                           MT9V032_COLUMN_START_MIN,
 574                           MT9V032_COLUMN_START_MAX);
 575         rect.top = clamp(ALIGN(sel->r.top + 1, 2) - 1,
 576                          MT9V032_ROW_START_MIN,
 577                          MT9V032_ROW_START_MAX);
 578         rect.width = clamp_t(unsigned int, ALIGN(sel->r.width, 2),
 579                              MT9V032_WINDOW_WIDTH_MIN,
 580                              MT9V032_WINDOW_WIDTH_MAX);
 581         rect.height = clamp_t(unsigned int, ALIGN(sel->r.height, 2),
 582                               MT9V032_WINDOW_HEIGHT_MIN,
 583                               MT9V032_WINDOW_HEIGHT_MAX);
 584
 585         rect.width = min_t(unsigned int,
 586                            rect.width, MT9V032_PIXEL_ARRAY_WIDTH - rect.left);
 587         rect.height = min_t(unsigned int,
 588                             rect.height, MT9V032_PIXEL_ARRAY_HEIGHT - rect.top);
 589
 590         __crop = __mt9v032_get_pad_crop(mt9v032, sd_state, sel->pad,
 591                                         sel->which);
 592
 593         if (rect.width != __crop->width || rect.height != __crop->height) {
 594                 /* Reset the output image size if the crop rectangle size has
 595                  * been modified.
 596                  */
 597                 __format = __mt9v032_get_pad_format(mt9v032, sd_state,
 598                                                     sel->pad,
 599                                                     sel->which);
 600                 __format->width = rect.width;
 601                 __format->height = rect.height;
 602                 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
 603                         mt9v032->hratio = 1;
 604                         mt9v032->vratio = 1;
 605                         mt9v032_configure_pixel_rate(mt9v032);
 606                 }
 607         }
 608
 609         *__crop = rect;
 610         sel->r = rect;
 611
 612         return 0;
 613 }
 614
 615 /* -----------------------------------------------------------------------------
 616  * V4L2 subdev control operations
 617  */
 618
 619 #define V4L2_CID_TEST_PATTERN_COLOR     (V4L2_CID_USER_BASE | 0x1001)
 620 /*
 621  * Value between 1 and 64 to set the desired bin. This is effectively a measure
 622  * of how bright the image is supposed to be. Both AGC and AEC try to reach
 623  * this.
 624  */
 625 #define V4L2_CID_AEGC_DESIRED_BIN       (V4L2_CID_USER_BASE | 0x1002)
 626 /*
 627  * LPF is the low pass filter capability of the chip. Both AEC and AGC have
 628  * this setting. This limits the speed in which AGC/AEC adjust their settings.
 629  * Possible values are 0-2. 0 means no LPF. For 1 and 2 this equation is used:
 630  *
 631  * if |(calculated new exp - current exp)| > (current exp / 4)
 632  *      next exp = calculated new exp
 633  * else
 634  *      next exp = current exp + ((calculated new exp - current exp) / 2^LPF)
 635  */
 636 #define V4L2_CID_AEC_LPF                (V4L2_CID_USER_BASE | 0x1003)
 637 #define V4L2_CID_AGC_LPF                (V4L2_CID_USER_BASE | 0x1004)
 638 /*
 639  * Value between 0 and 15. This is the number of frames being skipped before
 640  * updating the auto exposure/gain.
 641  */
 642 #define V4L2_CID_AEC_UPDATE_INTERVAL    (V4L2_CID_USER_BASE | 0x1005)
 643 #define V4L2_CID_AGC_UPDATE_INTERVAL    (V4L2_CID_USER_BASE | 0x1006)
 644 /*
 645  * Maximum shutter width used for AEC.
 646  */
 647 #define V4L2_CID_AEC_MAX_SHUTTER_WIDTH  (V4L2_CID_USER_BASE | 0x1007)
 648
 649 static int mt9v032_s_ctrl(struct v4l2_ctrl *ctrl)
 650 {
 651         struct mt9v032 *mt9v032 =
 652                         container_of(ctrl->handler, struct mt9v032, ctrls);
 653         struct regmap *map = mt9v032->regmap;
 654         u32 freq;
 655         u16 data;
 656
 657         switch (ctrl->id) {
 658         case V4L2_CID_AUTOGAIN:
 659                 return mt9v032_update_aec_agc(mt9v032, MT9V032_AGC_ENABLE,
 660                                               ctrl->val);
 661
 662         case V4L2_CID_GAIN:
 663                 return regmap_write(map, MT9V032_ANALOG_GAIN, ctrl->val);
 664
 665         case V4L2_CID_EXPOSURE_AUTO:
 666                 return mt9v032_update_aec_agc(mt9v032, MT9V032_AEC_ENABLE,
 667                                               !ctrl->val);
 668
 669         case V4L2_CID_EXPOSURE:
 670                 return regmap_write(map, MT9V032_TOTAL_SHUTTER_WIDTH,
 671                                     ctrl->val);
 672
 673         case V4L2_CID_HBLANK:
 674                 mt9v032->hblank = ctrl->val;
 675                 return mt9v032_update_hblank(mt9v032);
 676
 677         case V4L2_CID_VBLANK:
 678                 return regmap_write(map, MT9V032_VERTICAL_BLANKING,
 679                                     ctrl->val);
 680
 681         case V4L2_CID_PIXEL_RATE:
 682         case V4L2_CID_LINK_FREQ:
 683                 if (mt9v032->link_freq == NULL)
 684                         break;
 685
 686                 freq = mt9v032->pdata->link_freqs[mt9v032->link_freq->val];
 687                 *mt9v032->pixel_rate->p_new.p_s64 = freq;
 688                 mt9v032->sysclk = freq;
 689                 break;
 690
 691         case V4L2_CID_TEST_PATTERN:
 692                 switch (mt9v032->test_pattern->val) {
 693                 case 0:
 694                         data = 0;
 695                         break;
 696                 case 1:
 697                         data = MT9V032_TEST_PATTERN_GRAY_VERTICAL
 698                              | MT9V032_TEST_PATTERN_ENABLE;
 699                         break;
 700                 case 2:
 701                         data = MT9V032_TEST_PATTERN_GRAY_HORIZONTAL
 702                              | MT9V032_TEST_PATTERN_ENABLE;
 703                         break;
 704                 case 3:
 705                         data = MT9V032_TEST_PATTERN_GRAY_DIAGONAL
 706                              | MT9V032_TEST_PATTERN_ENABLE;
 707                         break;
 708                 default:
 709                         data = (mt9v032->test_pattern_color->val <<
 710                                 MT9V032_TEST_PATTERN_DATA_SHIFT)
 711                              | MT9V032_TEST_PATTERN_USE_DATA
 712                              | MT9V032_TEST_PATTERN_ENABLE
 713                              | MT9V032_TEST_PATTERN_FLIP;
 714                         break;
 715                 }
 716                 return regmap_write(map, MT9V032_TEST_PATTERN, data);
 717
 718         case V4L2_CID_AEGC_DESIRED_BIN:
 719                 return regmap_write(map, MT9V032_AEGC_DESIRED_BIN, ctrl->val);
 720
 721         case V4L2_CID_AEC_LPF:
 722                 return regmap_write(map, MT9V032_AEC_LPF, ctrl->val);
 723
 724         case V4L2_CID_AGC_LPF:
 725                 return regmap_write(map, MT9V032_AGC_LPF, ctrl->val);
 726
 727         case V4L2_CID_AEC_UPDATE_INTERVAL:
 728                 return regmap_write(map, MT9V032_AEC_UPDATE_FREQUENCY,
 729                                     ctrl->val);
 730
 731         case V4L2_CID_AGC_UPDATE_INTERVAL:
 732                 return regmap_write(map, MT9V032_AGC_UPDATE_FREQUENCY,
 733                                     ctrl->val);
 734
 735         case V4L2_CID_AEC_MAX_SHUTTER_WIDTH:
 736                 return regmap_write(map,
 737                                     mt9v032->model->data->aec_max_shutter_reg,
 738                                     ctrl->val);
 739         }
 740
 741         return 0;
 742 }
 743
 744 static const struct v4l2_ctrl_ops mt9v032_ctrl_ops = {
 745         .s_ctrl = mt9v032_s_ctrl,
 746 };
 747
 748 static const char * const mt9v032_test_pattern_menu[] = {
 749         "Disabled",
 750         "Gray Vertical Shade",
 751         "Gray Horizontal Shade",
 752         "Gray Diagonal Shade",
 753         "Plain",
 754 };
 755
 756 static const struct v4l2_ctrl_config mt9v032_test_pattern_color = {
 757         .ops            = &mt9v032_ctrl_ops,
 758         .id             = V4L2_CID_TEST_PATTERN_COLOR,
 759         .type           = V4L2_CTRL_TYPE_INTEGER,
 760         .name           = "Test Pattern Color",
 761         .min            = 0,
 762         .max            = 1023,
 763         .step           = 1,
 764         .def            = 0,
 765         .flags          = 0,
 766 };
 767
 768 static const struct v4l2_ctrl_config mt9v032_aegc_controls[] = {
 769         {
 770                 .ops            = &mt9v032_ctrl_ops,
 771                 .id             = V4L2_CID_AEGC_DESIRED_BIN,
 772                 .type           = V4L2_CTRL_TYPE_INTEGER,
 773                 .name           = "AEC/AGC Desired Bin",
 774                 .min            = 1,
 775                 .max            = 64,
 776                 .step           = 1,
 777                 .def            = 58,
 778                 .flags          = 0,
 779         }, {
 780                 .ops            = &mt9v032_ctrl_ops,
 781                 .id             = V4L2_CID_AEC_LPF,
 782                 .type           = V4L2_CTRL_TYPE_INTEGER,
 783                 .name           = "AEC Low Pass Filter",
 784                 .min            = 0,
 785                 .max            = 2,
 786                 .step           = 1,
 787                 .def            = 0,
 788                 .flags          = 0,
 789         }, {
 790                 .ops            = &mt9v032_ctrl_ops,
 791                 .id             = V4L2_CID_AGC_LPF,
 792                 .type           = V4L2_CTRL_TYPE_INTEGER,
 793                 .name           = "AGC Low Pass Filter",
 794                 .min            = 0,
 795                 .max            = 2,
 796                 .step           = 1,
 797                 .def            = 2,
 798                 .flags          = 0,
 799         }, {
 800                 .ops            = &mt9v032_ctrl_ops,
 801                 .id             = V4L2_CID_AEC_UPDATE_INTERVAL,
 802                 .type           = V4L2_CTRL_TYPE_INTEGER,
 803                 .name           = "AEC Update Interval",
 804                 .min            = 0,
 805                 .max            = 16,
 806                 .step           = 1,
 807                 .def            = 2,
 808                 .flags          = 0,
 809         }, {
 810                 .ops            = &mt9v032_ctrl_ops,
 811                 .id             = V4L2_CID_AGC_UPDATE_INTERVAL,
 812                 .type           = V4L2_CTRL_TYPE_INTEGER,
 813                 .name           = "AGC Update Interval",
 814                 .min            = 0,
 815                 .max            = 16,
 816                 .step           = 1,
 817                 .def            = 2,
 818                 .flags          = 0,
 819         }
 820 };
 821
 822 static const struct v4l2_ctrl_config mt9v032_aec_max_shutter_width = {
 823         .ops            = &mt9v032_ctrl_ops,
 824         .id             = V4L2_CID_AEC_MAX_SHUTTER_WIDTH,
 825         .type           = V4L2_CTRL_TYPE_INTEGER,
 826         .name           = "AEC Max Shutter Width",
 827         .min            = 1,
 828         .max            = 2047,
 829         .step           = 1,
 830         .def            = 480,
 831         .flags          = 0,
 832 };
 833
 834 static const struct v4l2_ctrl_config mt9v034_aec_max_shutter_width = {
 835         .ops            = &mt9v032_ctrl_ops,
 836         .id             = V4L2_CID_AEC_MAX_SHUTTER_WIDTH,
 837         .type           = V4L2_CTRL_TYPE_INTEGER,
 838         .name           = "AEC Max Shutter Width",
 839         .min            = 1,
 840         .max            = 32765,
 841         .step           = 1,
 842         .def            = 480,
 843         .flags          = 0,
 844 };
 845
 846 /* -----------------------------------------------------------------------------
 847  * V4L2 subdev core operations
 848  */
 849
 850 static int mt9v032_set_power(struct v4l2_subdev *subdev, int on)
 851 {
 852         struct mt9v032 *mt9v032 = to_mt9v032(subdev);
 853         int ret = 0;
 854
 855         mutex_lock(&mt9v032->power_lock);
 856
 857         /* If the power count is modified from 0 to != 0 or from != 0 to 0,
 858          * update the power state.
 859          */
 860         if (mt9v032->power_count == !on) {
 861                 ret = __mt9v032_set_power(mt9v032, !!on);
 862                 if (ret < 0)
 863                         goto done;
 864         }
 865
 866         /* Update the power count. */
 867         mt9v032->power_count += on ? 1 : -1;
 868         WARN_ON(mt9v032->power_count < 0);
 869
 870 done:
 871         mutex_unlock(&mt9v032->power_lock);
 872         return ret;
 873 }
 874
 875 /* -----------------------------------------------------------------------------
 876  * V4L2 subdev internal operations
 877  */
 878
 879 static int mt9v032_registered(struct v4l2_subdev *subdev)
 880 {
 881         struct i2c_client *client = v4l2_get_subdevdata(subdev);
 882         struct mt9v032 *mt9v032 = to_mt9v032(subdev);
 883         unsigned int i;
 884         u32 version;
 885         int ret;
 886
 887         dev_info(&client->dev, "Probing MT9V032 at address 0x%02x\n",
 888                         client->addr);
 889
 890         ret = mt9v032_power_on(mt9v032);
 891         if (ret < 0) {
 892                 dev_err(&client->dev, "MT9V032 power up failed\n");
 893                 return ret;
 894         }
 895
 896         /* Read and check the sensor version */
 897         ret = regmap_read(mt9v032->regmap, MT9V032_CHIP_VERSION, &version);
 898
 899         mt9v032_power_off(mt9v032);
 900
 901         if (ret < 0) {
 902                 dev_err(&client->dev, "Failed reading chip version\n");
 903                 return ret;
 904         }
 905
 906         for (i = 0; i < ARRAY_SIZE(mt9v032_versions); ++i) {
 907                 if (mt9v032_versions[i].version == version) {
 908                         mt9v032->version = &mt9v032_versions[i];
 909                         break;
 910                 }
 911         }
 912
 913         if (mt9v032->version == NULL) {
 914                 dev_err(&client->dev, "Unsupported chip version 0x%04x\n",
 915                         version);
 916                 return -ENODEV;
 917         }
 918
 919         dev_info(&client->dev, "%s detected at address 0x%02x\n",
 920                  mt9v032->version->name, client->addr);
 921
 922         mt9v032_configure_pixel_rate(mt9v032);
 923
 924         return ret;
 925 }
 926
 927 static int mt9v032_open(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh)
 928 {
 929         struct mt9v032 *mt9v032 = to_mt9v032(subdev);
 930         struct v4l2_mbus_framefmt *format;
 931         struct v4l2_rect *crop;
 932
 933         crop = v4l2_subdev_get_try_crop(subdev, fh->state, 0);
 934         crop->left = MT9V032_COLUMN_START_DEF;
 935         crop->top = MT9V032_ROW_START_DEF;
 936         crop->width = MT9V032_WINDOW_WIDTH_DEF;
 937         crop->height = MT9V032_WINDOW_HEIGHT_DEF;
 938
 939         format = v4l2_subdev_get_try_format(subdev, fh->state, 0);
 940
 941         if (mt9v032->model->color)
 942                 format->code = MEDIA_BUS_FMT_SGRBG10_1X10;
 943         else
 944                 format->code = MEDIA_BUS_FMT_Y10_1X10;
 945
 946         format->width = MT9V032_WINDOW_WIDTH_DEF;
 947         format->height = MT9V032_WINDOW_HEIGHT_DEF;
 948         format->field = V4L2_FIELD_NONE;
 949         format->colorspace = V4L2_COLORSPACE_SRGB;
 950
 951         return mt9v032_set_power(subdev, 1);
 952 }
 953
 954 static int mt9v032_close(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh)
 955 {
 956         return mt9v032_set_power(subdev, 0);
 957 }
 958
 959 static const struct v4l2_subdev_core_ops mt9v032_subdev_core_ops = {
 960         .s_power        = mt9v032_set_power,
 961 };
 962
 963 static const struct v4l2_subdev_video_ops mt9v032_subdev_video_ops = {
 964         .s_stream       = mt9v032_s_stream,
 965 };
 966
 967 static const struct v4l2_subdev_pad_ops mt9v032_subdev_pad_ops = {
 968         .enum_mbus_code = mt9v032_enum_mbus_code,
 969         .enum_frame_size = mt9v032_enum_frame_size,
 970         .get_fmt = mt9v032_get_format,
 971         .set_fmt = mt9v032_set_format,
 972         .get_selection = mt9v032_get_selection,
 973         .set_selection = mt9v032_set_selection,
 974 };
 975
 976 static const struct v4l2_subdev_ops mt9v032_subdev_ops = {
 977         .core   = &mt9v032_subdev_core_ops,
 978         .video  = &mt9v032_subdev_video_ops,
 979         .pad    = &mt9v032_subdev_pad_ops,
 980 };
 981
 982 static const struct v4l2_subdev_internal_ops mt9v032_subdev_internal_ops = {
 983         .registered = mt9v032_registered,
 984         .open = mt9v032_open,
 985         .close = mt9v032_close,
 986 };
 987
 988 static const struct regmap_config mt9v032_regmap_config = {
 989         .reg_bits = 8,
 990         .val_bits = 16,
 991         .max_register = 0xff,
 992         .cache_type = REGCACHE_RBTREE,
 993 };
 994
 995 /* -----------------------------------------------------------------------------
 996  * Driver initialization and probing
 997  */
 998
 999 static struct mt9v032_platform_data *
1000 mt9v032_get_pdata(struct i2c_client *client)
1001 {
1002         struct mt9v032_platform_data *pdata = NULL;
1003         struct v4l2_fwnode_endpoint endpoint = { .bus_type = 0 };
1004         struct device_node *np;
1005         struct property *prop;
1006
1007         if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node)
1008                 return client->dev.platform_data;
1009
1010         np = of_graph_get_next_endpoint(client->dev.of_node, NULL);
1011         if (!np)
1012                 return NULL;
1013
1014         if (v4l2_fwnode_endpoint_parse(of_fwnode_handle(np), &endpoint) < 0)
1015                 goto done;
1016
1017         pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
1018         if (!pdata)
1019                 goto done;
1020
1021         prop = of_find_property(np, "link-frequencies", NULL);
1022         if (prop) {
1023                 u64 *link_freqs;
1024                 size_t size = prop->length / sizeof(*link_freqs);
1025
1026                 link_freqs = devm_kcalloc(&client->dev, size,
1027                                           sizeof(*link_freqs), GFP_KERNEL);
1028                 if (!link_freqs)
1029                         goto done;
1030
1031                 if (of_property_read_u64_array(np, "link-frequencies",
1032                                                link_freqs, size) < 0)
1033                         goto done;
1034
1035                 pdata->link_freqs = link_freqs;
1036                 pdata->link_def_freq = link_freqs[0];
1037         }
1038
1039         pdata->clk_pol = !!(endpoint.bus.parallel.flags &
1040                             V4L2_MBUS_PCLK_SAMPLE_RISING);
1041
1042 done:
1043         of_node_put(np);
1044         return pdata;
1045 }
1046
1047 static int mt9v032_probe(struct i2c_client *client)
1048 {
1049         const struct i2c_device_id *did = i2c_client_get_device_id(client);
1050         struct mt9v032_platform_data *pdata = mt9v032_get_pdata(client);
1051         struct mt9v032 *mt9v032;
1052         unsigned int i;
1053         int ret;
1054
1055         mt9v032 = devm_kzalloc(&client->dev, sizeof(*mt9v032), GFP_KERNEL);
1056         if (!mt9v032)
1057                 return -ENOMEM;
1058
1059         mt9v032->regmap = devm_regmap_init_i2c(client, &mt9v032_regmap_config);
1060         if (IS_ERR(mt9v032->regmap))
1061                 return PTR_ERR(mt9v032->regmap);
1062
1063         mt9v032->clk = devm_clk_get(&client->dev, NULL);
1064         if (IS_ERR(mt9v032->clk))
1065                 return PTR_ERR(mt9v032->clk);
1066
1067         mt9v032->reset_gpio = devm_gpiod_get_optional(&client->dev, "reset",
1068                                                       GPIOD_OUT_HIGH);
1069         if (IS_ERR(mt9v032->reset_gpio))
1070                 return PTR_ERR(mt9v032->reset_gpio);
1071
1072         mt9v032->standby_gpio = devm_gpiod_get_optional(&client->dev, "standby",
1073                                                         GPIOD_OUT_LOW);
1074         if (IS_ERR(mt9v032->standby_gpio))
1075                 return PTR_ERR(mt9v032->standby_gpio);
1076
1077         mutex_init(&mt9v032->power_lock);
1078         mt9v032->pdata = pdata;
1079         mt9v032->model = (const void *)did->driver_data;
1080
1081         v4l2_ctrl_handler_init(&mt9v032->ctrls, 11 +
1082                                ARRAY_SIZE(mt9v032_aegc_controls));
1083
1084         v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
1085                           V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
1086         v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
1087                           V4L2_CID_GAIN, MT9V032_ANALOG_GAIN_MIN,
1088                           MT9V032_ANALOG_GAIN_MAX, 1, MT9V032_ANALOG_GAIN_DEF);
1089         v4l2_ctrl_new_std_menu(&mt9v032->ctrls, &mt9v032_ctrl_ops,
1090                                V4L2_CID_EXPOSURE_AUTO, V4L2_EXPOSURE_MANUAL, 0,
1091                                V4L2_EXPOSURE_AUTO);
1092         v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
1093                           V4L2_CID_EXPOSURE, mt9v032->model->data->min_shutter,
1094                           mt9v032->model->data->max_shutter, 1,
1095                           MT9V032_TOTAL_SHUTTER_WIDTH_DEF);
1096         v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
1097                           V4L2_CID_HBLANK, mt9v032->model->data->min_hblank,
1098                           MT9V032_HORIZONTAL_BLANKING_MAX, 1,
1099                           MT9V032_HORIZONTAL_BLANKING_DEF);
1100         v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
1101                           V4L2_CID_VBLANK, mt9v032->model->data->min_vblank,
1102                           mt9v032->model->data->max_vblank, 1,
1103                           MT9V032_VERTICAL_BLANKING_DEF);
1104         mt9v032->test_pattern = v4l2_ctrl_new_std_menu_items(&mt9v032->ctrls,
1105                                 &mt9v032_ctrl_ops, V4L2_CID_TEST_PATTERN,
1106                                 ARRAY_SIZE(mt9v032_test_pattern_menu) - 1, 0, 0,
1107                                 mt9v032_test_pattern_menu);
1108         mt9v032->test_pattern_color = v4l2_ctrl_new_custom(&mt9v032->ctrls,
1109                                       &mt9v032_test_pattern_color, NULL);
1110
1111         v4l2_ctrl_new_custom(&mt9v032->ctrls,
1112                              mt9v032->model->data->aec_max_shutter_v4l2_ctrl,
1113                              NULL);
1114         for (i = 0; i < ARRAY_SIZE(mt9v032_aegc_controls); ++i)
1115                 v4l2_ctrl_new_custom(&mt9v032->ctrls, &mt9v032_aegc_controls[i],
1116                                      NULL);
1117
1118         v4l2_ctrl_cluster(2, &mt9v032->test_pattern);
1119
1120         mt9v032->pixel_rate =
1121                 v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
1122                                   V4L2_CID_PIXEL_RATE, 1, INT_MAX, 1, 1);
1123
1124         if (pdata && pdata->link_freqs) {
1125                 unsigned int def = 0;
1126
1127                 for (i = 0; pdata->link_freqs[i]; ++i) {
1128                         if (pdata->link_freqs[i] == pdata->link_def_freq)
1129                                 def = i;
1130                 }
1131
1132                 mt9v032->link_freq =
1133                         v4l2_ctrl_new_int_menu(&mt9v032->ctrls,
1134                                                &mt9v032_ctrl_ops,
1135                                                V4L2_CID_LINK_FREQ, i - 1, def,
1136                                                pdata->link_freqs);
1137                 v4l2_ctrl_cluster(2, &mt9v032->link_freq);
1138         }
1139
1140
1141         mt9v032->subdev.ctrl_handler = &mt9v032->ctrls;
1142
1143         if (mt9v032->ctrls.error) {
1144                 dev_err(&client->dev, "control initialization error %d\n",
1145                         mt9v032->ctrls.error);
1146                 ret = mt9v032->ctrls.error;
1147                 goto err;
1148         }
1149
1150         mt9v032->crop.left = MT9V032_COLUMN_START_DEF;
1151         mt9v032->crop.top = MT9V032_ROW_START_DEF;
1152         mt9v032->crop.width = MT9V032_WINDOW_WIDTH_DEF;
1153         mt9v032->crop.height = MT9V032_WINDOW_HEIGHT_DEF;
1154
1155         if (mt9v032->model->color)
1156                 mt9v032->format.code = MEDIA_BUS_FMT_SGRBG10_1X10;
1157         else
1158                 mt9v032->format.code = MEDIA_BUS_FMT_Y10_1X10;
1159
1160         mt9v032->format.width = MT9V032_WINDOW_WIDTH_DEF;
1161         mt9v032->format.height = MT9V032_WINDOW_HEIGHT_DEF;
1162         mt9v032->format.field = V4L2_FIELD_NONE;
1163         mt9v032->format.colorspace = V4L2_COLORSPACE_SRGB;
1164
1165         mt9v032->hratio = 1;
1166         mt9v032->vratio = 1;
1167
1168         mt9v032->aec_agc = MT9V032_AEC_ENABLE | MT9V032_AGC_ENABLE;
1169         mt9v032->hblank = MT9V032_HORIZONTAL_BLANKING_DEF;
1170         mt9v032->sysclk = MT9V032_SYSCLK_FREQ_DEF;
1171
1172         v4l2_i2c_subdev_init(&mt9v032->subdev, client, &mt9v032_subdev_ops);
1173         mt9v032->subdev.internal_ops = &mt9v032_subdev_internal_ops;
1174         mt9v032->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1175
1176         mt9v032->subdev.entity.function = MEDIA_ENT_F_CAM_SENSOR;
1177         mt9v032->pad.flags = MEDIA_PAD_FL_SOURCE;
1178         ret = media_entity_pads_init(&mt9v032->subdev.entity, 1, &mt9v032->pad);
1179         if (ret < 0)
1180                 goto err;
1181
1182         mt9v032->subdev.dev = &client->dev;
1183         ret = v4l2_async_register_subdev(&mt9v032->subdev);
1184         if (ret < 0)
1185                 goto err;
1186
1187         return 0;
1188
1189 err:
1190         media_entity_cleanup(&mt9v032->subdev.entity);
1191         v4l2_ctrl_handler_free(&mt9v032->ctrls);
1192         return ret;
1193 }
1194
1195 static void mt9v032_remove(struct i2c_client *client)
1196 {
1197         struct v4l2_subdev *subdev = i2c_get_clientdata(client);
1198         struct mt9v032 *mt9v032 = to_mt9v032(subdev);
1199
1200         v4l2_async_unregister_subdev(subdev);
1201         v4l2_ctrl_handler_free(&mt9v032->ctrls);
1202         media_entity_cleanup(&subdev->entity);
1203 }
1204
1205 static const struct mt9v032_model_data mt9v032_model_data[] = {
1206         {
1207                 /* MT9V022, MT9V032 revisions 1/2/3 */
1208                 .min_row_time = 660,
1209                 .min_hblank = MT9V032_HORIZONTAL_BLANKING_MIN,
1210                 .min_vblank = MT9V032_VERTICAL_BLANKING_MIN,
1211                 .max_vblank = MT9V032_VERTICAL_BLANKING_MAX,
1212                 .min_shutter = MT9V032_TOTAL_SHUTTER_WIDTH_MIN,
1213                 .max_shutter = MT9V032_TOTAL_SHUTTER_WIDTH_MAX,
1214                 .pclk_reg = MT9V032_PIXEL_CLOCK,
1215                 .aec_max_shutter_reg = MT9V032_AEC_MAX_SHUTTER_WIDTH,
1216                 .aec_max_shutter_v4l2_ctrl = &mt9v032_aec_max_shutter_width,
1217         }, {
1218                 /* MT9V024, MT9V034 */
1219                 .min_row_time = 690,
1220                 .min_hblank = MT9V034_HORIZONTAL_BLANKING_MIN,
1221                 .min_vblank = MT9V034_VERTICAL_BLANKING_MIN,
1222                 .max_vblank = MT9V034_VERTICAL_BLANKING_MAX,
1223                 .min_shutter = MT9V034_TOTAL_SHUTTER_WIDTH_MIN,
1224                 .max_shutter = MT9V034_TOTAL_SHUTTER_WIDTH_MAX,
1225                 .pclk_reg = MT9V034_PIXEL_CLOCK,
1226                 .aec_max_shutter_reg = MT9V034_AEC_MAX_SHUTTER_WIDTH,
1227                 .aec_max_shutter_v4l2_ctrl = &mt9v034_aec_max_shutter_width,
1228         },
1229 };
1230
1231 static const struct mt9v032_model_info mt9v032_models[] = {
1232         [MT9V032_MODEL_V022_COLOR] = {
1233                 .data = &mt9v032_model_data[0],
1234                 .color = true,
1235         },
1236         [MT9V032_MODEL_V022_MONO] = {
1237                 .data = &mt9v032_model_data[0],
1238                 .color = false,
1239         },
1240         [MT9V032_MODEL_V024_COLOR] = {
1241                 .data = &mt9v032_model_data[1],
1242                 .color = true,
1243         },
1244         [MT9V032_MODEL_V024_MONO] = {
1245                 .data = &mt9v032_model_data[1],
1246                 .color = false,
1247         },
1248         [MT9V032_MODEL_V032_COLOR] = {
1249                 .data = &mt9v032_model_data[0],
1250                 .color = true,
1251         },
1252         [MT9V032_MODEL_V032_MONO] = {
1253                 .data = &mt9v032_model_data[0],
1254                 .color = false,
1255         },
1256         [MT9V032_MODEL_V034_COLOR] = {
1257                 .data = &mt9v032_model_data[1],
1258                 .color = true,
1259         },
1260         [MT9V032_MODEL_V034_MONO] = {
1261                 .data = &mt9v032_model_data[1],
1262                 .color = false,
1263         },
1264 };
1265
1266 static const struct i2c_device_id mt9v032_id[] = {
1267         { "mt9v022", (kernel_ulong_t)&mt9v032_models[MT9V032_MODEL_V022_COLOR] },
1268         { "mt9v022m", (kernel_ulong_t)&mt9v032_models[MT9V032_MODEL_V022_MONO] },
1269         { "mt9v024", (kernel_ulong_t)&mt9v032_models[MT9V032_MODEL_V024_COLOR] },
1270         { "mt9v024m", (kernel_ulong_t)&mt9v032_models[MT9V032_MODEL_V024_MONO] },
1271         { "mt9v032", (kernel_ulong_t)&mt9v032_models[MT9V032_MODEL_V032_COLOR] },
1272         { "mt9v032m", (kernel_ulong_t)&mt9v032_models[MT9V032_MODEL_V032_MONO] },
1273         { "mt9v034", (kernel_ulong_t)&mt9v032_models[MT9V032_MODEL_V034_COLOR] },
1274         { "mt9v034m", (kernel_ulong_t)&mt9v032_models[MT9V032_MODEL_V034_MONO] },
1275         { }
1276 };
1277 MODULE_DEVICE_TABLE(i2c, mt9v032_id);
1278
1279 #if IS_ENABLED(CONFIG_OF)
1280 static const struct of_device_id mt9v032_of_match[] = {
1281         { .compatible = "aptina,mt9v022" },
1282         { .compatible = "aptina,mt9v022m" },
1283         { .compatible = "aptina,mt9v024" },
1284         { .compatible = "aptina,mt9v024m" },
1285         { .compatible = "aptina,mt9v032" },
1286         { .compatible = "aptina,mt9v032m" },
1287         { .compatible = "aptina,mt9v034" },
1288         { .compatible = "aptina,mt9v034m" },
1289         { /* Sentinel */ }
1290 };
1291 MODULE_DEVICE_TABLE(of, mt9v032_of_match);
1292 #endif
1293
1294 static struct i2c_driver mt9v032_driver = {
1295         .driver = {
1296                 .name = "mt9v032",
1297                 .of_match_table = of_match_ptr(mt9v032_of_match),
1298         },
1299         .probe          = mt9v032_probe,
1300         .remove         = mt9v032_remove,
1301         .id_table       = mt9v032_id,
1302 };
1303
1304 module_i2c_driver(mt9v032_driver);
1305
1306 MODULE_DESCRIPTION("Aptina MT9V032 Camera driver");
1307 MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
1308 MODULE_LICENSE("GPL");