linux/drivers/media/i2c/mt9v032.c
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   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/of_graph.h>
  23#include <linux/regmap.h>
  24#include <linux/slab.h>
  25#include <linux/videodev2.h>
  26#include <linux/v4l2-mediabus.h>
  27#include <linux/module.h>
  28
  29#include <media/i2c/mt9v032.h>
  30#include <media/v4l2-ctrls.h>
  31#include <media/v4l2-device.h>
  32#include <media/v4l2-fwnode.h>
  33#include <media/v4l2-subdev.h>
  34
  35/* The first four rows are black rows. The active area spans 753x481 pixels. */
  36#define MT9V032_PIXEL_ARRAY_HEIGHT                      485
  37#define MT9V032_PIXEL_ARRAY_WIDTH                       753
  38
  39#define MT9V032_SYSCLK_FREQ_DEF                         26600000
  40
  41#define MT9V032_CHIP_VERSION                            0x00
  42#define         MT9V032_CHIP_ID_REV1                    0x1311
  43#define         MT9V032_CHIP_ID_REV3                    0x1313
  44#define         MT9V034_CHIP_ID_REV1                    0X1324
  45#define MT9V032_COLUMN_START                            0x01
  46#define         MT9V032_COLUMN_START_MIN                1
  47#define         MT9V032_COLUMN_START_DEF                1
  48#define         MT9V032_COLUMN_START_MAX                752
  49#define MT9V032_ROW_START                               0x02
  50#define         MT9V032_ROW_START_MIN                   4
  51#define         MT9V032_ROW_START_DEF                   5
  52#define         MT9V032_ROW_START_MAX                   482
  53#define MT9V032_WINDOW_HEIGHT                           0x03
  54#define         MT9V032_WINDOW_HEIGHT_MIN               1
  55#define         MT9V032_WINDOW_HEIGHT_DEF               480
  56#define         MT9V032_WINDOW_HEIGHT_MAX               480
  57#define MT9V032_WINDOW_WIDTH                            0x04
  58#define         MT9V032_WINDOW_WIDTH_MIN                1
  59#define         MT9V032_WINDOW_WIDTH_DEF                752
  60#define         MT9V032_WINDOW_WIDTH_MAX                752
  61#define MT9V032_HORIZONTAL_BLANKING                     0x05
  62#define         MT9V032_HORIZONTAL_BLANKING_MIN         43
  63#define         MT9V034_HORIZONTAL_BLANKING_MIN         61
  64#define         MT9V032_HORIZONTAL_BLANKING_DEF         94
  65#define         MT9V032_HORIZONTAL_BLANKING_MAX         1023
  66#define MT9V032_VERTICAL_BLANKING                       0x06
  67#define         MT9V032_VERTICAL_BLANKING_MIN           4
  68#define         MT9V034_VERTICAL_BLANKING_MIN           2
  69#define         MT9V032_VERTICAL_BLANKING_DEF           45
  70#define         MT9V032_VERTICAL_BLANKING_MAX           3000
  71#define         MT9V034_VERTICAL_BLANKING_MAX           32288
  72#define MT9V032_CHIP_CONTROL                            0x07
  73#define         MT9V032_CHIP_CONTROL_MASTER_MODE        (1 << 3)
  74#define         MT9V032_CHIP_CONTROL_DOUT_ENABLE        (1 << 7)
  75#define         MT9V032_CHIP_CONTROL_SEQUENTIAL         (1 << 8)
  76#define MT9V032_SHUTTER_WIDTH1                          0x08
  77#define MT9V032_SHUTTER_WIDTH2                          0x09
  78#define MT9V032_SHUTTER_WIDTH_CONTROL                   0x0a
  79#define MT9V032_TOTAL_SHUTTER_WIDTH                     0x0b
  80#define         MT9V032_TOTAL_SHUTTER_WIDTH_MIN         1
  81#define         MT9V034_TOTAL_SHUTTER_WIDTH_MIN         0
  82#define         MT9V032_TOTAL_SHUTTER_WIDTH_DEF         480
  83#define         MT9V032_TOTAL_SHUTTER_WIDTH_MAX         32767
  84#define         MT9V034_TOTAL_SHUTTER_WIDTH_MAX         32765
  85#define MT9V032_RESET                                   0x0c
  86#define MT9V032_READ_MODE                               0x0d
  87#define         MT9V032_READ_MODE_ROW_BIN_MASK          (3 << 0)
  88#define         MT9V032_READ_MODE_ROW_BIN_SHIFT         0
  89#define         MT9V032_READ_MODE_COLUMN_BIN_MASK       (3 << 2)
  90#define         MT9V032_READ_MODE_COLUMN_BIN_SHIFT      2
  91#define         MT9V032_READ_MODE_ROW_FLIP              (1 << 4)
  92#define         MT9V032_READ_MODE_COLUMN_FLIP           (1 << 5)
  93#define         MT9V032_READ_MODE_DARK_COLUMNS          (1 << 6)
  94#define         MT9V032_READ_MODE_DARK_ROWS             (1 << 7)
  95#define         MT9V032_READ_MODE_RESERVED              0x0300
  96#define MT9V032_PIXEL_OPERATION_MODE                    0x0f
  97#define         MT9V034_PIXEL_OPERATION_MODE_HDR        (1 << 0)
  98#define         MT9V034_PIXEL_OPERATION_MODE_COLOR      (1 << 1)
  99#define         MT9V032_PIXEL_OPERATION_MODE_COLOR      (1 << 2)
 100#define         MT9V032_PIXEL_OPERATION_MODE_HDR        (1 << 6)
 101#define MT9V032_ANALOG_GAIN                             0x35
 102#define         MT9V032_ANALOG_GAIN_MIN                 16
 103#define         MT9V032_ANALOG_GAIN_DEF                 16
 104#define         MT9V032_ANALOG_GAIN_MAX                 64
 105#define MT9V032_MAX_ANALOG_GAIN                         0x36
 106#define         MT9V032_MAX_ANALOG_GAIN_MAX             127
 107#define MT9V032_FRAME_DARK_AVERAGE                      0x42
 108#define MT9V032_DARK_AVG_THRESH                         0x46
 109#define         MT9V032_DARK_AVG_LOW_THRESH_MASK        (255 << 0)
 110#define         MT9V032_DARK_AVG_LOW_THRESH_SHIFT       0
 111#define         MT9V032_DARK_AVG_HIGH_THRESH_MASK       (255 << 8)
 112#define         MT9V032_DARK_AVG_HIGH_THRESH_SHIFT      8
 113#define MT9V032_ROW_NOISE_CORR_CONTROL                  0x70
 114#define         MT9V034_ROW_NOISE_CORR_ENABLE           (1 << 0)
 115#define         MT9V034_ROW_NOISE_CORR_USE_BLK_AVG      (1 << 1)
 116#define         MT9V032_ROW_NOISE_CORR_ENABLE           (1 << 5)
 117#define         MT9V032_ROW_NOISE_CORR_USE_BLK_AVG      (1 << 7)
 118#define MT9V032_PIXEL_CLOCK                             0x74
 119#define MT9V034_PIXEL_CLOCK                             0x72
 120#define         MT9V032_PIXEL_CLOCK_INV_LINE            (1 << 0)
 121#define         MT9V032_PIXEL_CLOCK_INV_FRAME           (1 << 1)
 122#define         MT9V032_PIXEL_CLOCK_XOR_LINE            (1 << 2)
 123#define         MT9V032_PIXEL_CLOCK_CONT_LINE           (1 << 3)
 124#define         MT9V032_PIXEL_CLOCK_INV_PXL_CLK         (1 << 4)
 125#define MT9V032_TEST_PATTERN                            0x7f
 126#define         MT9V032_TEST_PATTERN_DATA_MASK          (1023 << 0)
 127#define         MT9V032_TEST_PATTERN_DATA_SHIFT         0
 128#define         MT9V032_TEST_PATTERN_USE_DATA           (1 << 10)
 129#define         MT9V032_TEST_PATTERN_GRAY_MASK          (3 << 11)
 130#define         MT9V032_TEST_PATTERN_GRAY_NONE          (0 << 11)
 131#define         MT9V032_TEST_PATTERN_GRAY_VERTICAL      (1 << 11)
 132#define         MT9V032_TEST_PATTERN_GRAY_HORIZONTAL    (2 << 11)
 133#define         MT9V032_TEST_PATTERN_GRAY_DIAGONAL      (3 << 11)
 134#define         MT9V032_TEST_PATTERN_ENABLE             (1 << 13)
 135#define         MT9V032_TEST_PATTERN_FLIP               (1 << 14)
 136#define MT9V032_AEGC_DESIRED_BIN                        0xa5
 137#define MT9V032_AEC_UPDATE_FREQUENCY                    0xa6
 138#define MT9V032_AEC_LPF                                 0xa8
 139#define MT9V032_AGC_UPDATE_FREQUENCY                    0xa9
 140#define MT9V032_AGC_LPF                                 0xaa
 141#define MT9V032_AEC_AGC_ENABLE                          0xaf
 142#define         MT9V032_AEC_ENABLE                      (1 << 0)
 143#define         MT9V032_AGC_ENABLE                      (1 << 1)
 144#define MT9V034_AEC_MAX_SHUTTER_WIDTH                   0xad
 145#define MT9V032_AEC_MAX_SHUTTER_WIDTH                   0xbd
 146#define MT9V032_THERMAL_INFO                            0xc1
 147
 148enum mt9v032_model {
 149        MT9V032_MODEL_V022_COLOR,       /* MT9V022IX7ATC */
 150        MT9V032_MODEL_V022_MONO,        /* MT9V022IX7ATM */
 151        MT9V032_MODEL_V024_COLOR,       /* MT9V024IA7XTC */
 152        MT9V032_MODEL_V024_MONO,        /* MT9V024IA7XTM */
 153        MT9V032_MODEL_V032_COLOR,       /* MT9V032C12STM */
 154        MT9V032_MODEL_V032_MONO,        /* MT9V032C12STC */
 155        MT9V032_MODEL_V034_COLOR,
 156        MT9V032_MODEL_V034_MONO,
 157};
 158
 159struct mt9v032_model_version {
 160        unsigned int version;
 161        const char *name;
 162};
 163
 164struct mt9v032_model_data {
 165        unsigned int min_row_time;
 166        unsigned int min_hblank;
 167        unsigned int min_vblank;
 168        unsigned int max_vblank;
 169        unsigned int min_shutter;
 170        unsigned int max_shutter;
 171        unsigned int pclk_reg;
 172        unsigned int aec_max_shutter_reg;
 173        const struct v4l2_ctrl_config * const aec_max_shutter_v4l2_ctrl;
 174};
 175
 176struct mt9v032_model_info {
 177        const struct mt9v032_model_data *data;
 178        bool color;
 179};
 180
 181static const struct mt9v032_model_version mt9v032_versions[] = {
 182        { MT9V032_CHIP_ID_REV1, "MT9V022/MT9V032 rev1/2" },
 183        { MT9V032_CHIP_ID_REV3, "MT9V022/MT9V032 rev3" },
 184        { MT9V034_CHIP_ID_REV1, "MT9V024/MT9V034 rev1" },
 185};
 186
 187struct mt9v032 {
 188        struct v4l2_subdev subdev;
 189        struct media_pad pad;
 190
 191        struct v4l2_mbus_framefmt format;
 192        struct v4l2_rect crop;
 193        unsigned int hratio;
 194        unsigned int vratio;
 195
 196        struct v4l2_ctrl_handler ctrls;
 197        struct {
 198                struct v4l2_ctrl *link_freq;
 199                struct v4l2_ctrl *pixel_rate;
 200        };
 201
 202        struct mutex power_lock;
 203        int power_count;
 204
 205        struct regmap *regmap;
 206        struct clk *clk;
 207        struct gpio_desc *reset_gpio;
 208        struct gpio_desc *standby_gpio;
 209
 210        struct mt9v032_platform_data *pdata;
 211        const struct mt9v032_model_info *model;
 212        const struct mt9v032_model_version *version;
 213
 214        u32 sysclk;
 215        u16 aec_agc;
 216        u16 hblank;
 217        struct {
 218                struct v4l2_ctrl *test_pattern;
 219                struct v4l2_ctrl *test_pattern_color;
 220        };
 221};
 222
 223static struct mt9v032 *to_mt9v032(struct v4l2_subdev *sd)
 224{
 225        return container_of(sd, struct mt9v032, subdev);
 226}
 227
 228static int
 229mt9v032_update_aec_agc(struct mt9v032 *mt9v032, u16 which, int enable)
 230{
 231        struct regmap *map = mt9v032->regmap;
 232        u16 value = mt9v032->aec_agc;
 233        int ret;
 234
 235        if (enable)
 236                value |= which;
 237        else
 238                value &= ~which;
 239
 240        ret = regmap_write(map, MT9V032_AEC_AGC_ENABLE, value);
 241        if (ret < 0)
 242                return ret;
 243
 244        mt9v032->aec_agc = value;
 245        return 0;
 246}
 247
 248static int
 249mt9v032_update_hblank(struct mt9v032 *mt9v032)
 250{
 251        struct v4l2_rect *crop = &mt9v032->crop;
 252        unsigned int min_hblank = mt9v032->model->data->min_hblank;
 253        unsigned int hblank;
 254
 255        if (mt9v032->version->version == MT9V034_CHIP_ID_REV1)
 256                min_hblank += (mt9v032->hratio - 1) * 10;
 257        min_hblank = max_t(int, mt9v032->model->data->min_row_time - crop->width,
 258                           min_hblank);
 259        hblank = max_t(unsigned int, mt9v032->hblank, min_hblank);
 260
 261        return regmap_write(mt9v032->regmap, MT9V032_HORIZONTAL_BLANKING,
 262                            hblank);
 263}
 264
 265static int mt9v032_power_on(struct mt9v032 *mt9v032)
 266{
 267        struct regmap *map = mt9v032->regmap;
 268        int ret;
 269
 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
 307static void mt9v032_power_off(struct mt9v032 *mt9v032)
 308{
 309        clk_disable_unprepare(mt9v032->clk);
 310}
 311
 312static 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
 346static 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
 360static 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
 374static 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
 422static 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
 433static 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
 448static 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
 459static 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
 470static 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
 483static 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
 527static 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
 540static 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
 630static 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
 725static const struct v4l2_ctrl_ops mt9v032_ctrl_ops = {
 726        .s_ctrl = mt9v032_s_ctrl,
 727};
 728
 729static 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
 737static 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
 749static 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
 803static 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
 815static 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
 831static 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
 851done:
 852        mutex_unlock(&mt9v032->power_lock);
 853        return ret;
 854}
 855
 856/* -----------------------------------------------------------------------------
 857 * V4L2 subdev internal operations
 858 */
 859
 860static 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
 907static 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
 934static int mt9v032_close(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh)
 935{
 936        return mt9v032_set_power(subdev, 0);
 937}
 938
 939static const struct v4l2_subdev_core_ops mt9v032_subdev_core_ops = {
 940        .s_power        = mt9v032_set_power,
 941};
 942
 943static const struct v4l2_subdev_video_ops mt9v032_subdev_video_ops = {
 944        .s_stream       = mt9v032_s_stream,
 945};
 946
 947static const 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
 956static const 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
 962static const struct v4l2_subdev_internal_ops mt9v032_subdev_internal_ops = {
 963        .registered = mt9v032_registered,
 964        .open = mt9v032_open,
 965        .close = mt9v032_close,
 966};
 967
 968static 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
 979static struct mt9v032_platform_data *
 980mt9v032_get_pdata(struct i2c_client *client)
 981{
 982        struct mt9v032_platform_data *pdata = NULL;
 983        struct v4l2_fwnode_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_fwnode_endpoint_parse(of_fwnode_handle(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
1022done:
1023        of_node_put(np);
1024        return pdata;
1025}
1026
1027static 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
1168err:
1169        media_entity_cleanup(&mt9v032->subdev.entity);
1170        v4l2_ctrl_handler_free(&mt9v032->ctrls);
1171        return ret;
1172}
1173
1174static 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
1186static 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
1212static 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
1247static 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};
1258MODULE_DEVICE_TABLE(i2c, mt9v032_id);
1259
1260#if IS_ENABLED(CONFIG_OF)
1261static 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};
1272MODULE_DEVICE_TABLE(of, mt9v032_of_match);
1273#endif
1274
1275static 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
1285module_i2c_driver(mt9v032_driver);
1286
1287MODULE_DESCRIPTION("Aptina MT9V032 Camera driver");
1288MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
1289MODULE_LICENSE("GPL");
1290