drivers/media/video/mt9m111.c

   1 /*
   2  * Driver for MT9M111/MT9M112/MT9M131 CMOS Image Sensor from Micron/Aptina
   3  *
   4  * Copyright (C) 2008, Robert Jarzmik <robert.jarzmik@free.fr>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10 #include <linux/videodev2.h>
  11 #include <linux/slab.h>
  12 #include <linux/i2c.h>
  13 #include <linux/log2.h>
  14 #include <linux/gpio.h>
  15 #include <linux/delay.h>
  16
  17 #include <media/v4l2-common.h>
  18 #include <media/v4l2-chip-ident.h>
  19 #include <media/soc_camera.h>
  20
  21 /*
  22  * MT9M111, MT9M112 and MT9M131:
  23  * i2c address is 0x48 or 0x5d (depending on SADDR pin)
  24  * The platform has to define i2c_board_info and call i2c_register_board_info()
  25  */
  26
  27 /*
  28  * Sensor core register addresses (0x000..0x0ff)
  29  */
  30 #define MT9M111_CHIP_VERSION            0x000
  31 #define MT9M111_ROW_START               0x001
  32 #define MT9M111_COLUMN_START            0x002
  33 #define MT9M111_WINDOW_HEIGHT           0x003
  34 #define MT9M111_WINDOW_WIDTH            0x004
  35 #define MT9M111_HORIZONTAL_BLANKING_B   0x005
  36 #define MT9M111_VERTICAL_BLANKING_B     0x006
  37 #define MT9M111_HORIZONTAL_BLANKING_A   0x007
  38 #define MT9M111_VERTICAL_BLANKING_A     0x008
  39 #define MT9M111_SHUTTER_WIDTH           0x009
  40 #define MT9M111_ROW_SPEED               0x00a
  41 #define MT9M111_EXTRA_DELAY             0x00b
  42 #define MT9M111_SHUTTER_DELAY           0x00c
  43 #define MT9M111_RESET                   0x00d
  44 #define MT9M111_READ_MODE_B             0x020
  45 #define MT9M111_READ_MODE_A             0x021
  46 #define MT9M111_FLASH_CONTROL           0x023
  47 #define MT9M111_GREEN1_GAIN             0x02b
  48 #define MT9M111_BLUE_GAIN               0x02c
  49 #define MT9M111_RED_GAIN                0x02d
  50 #define MT9M111_GREEN2_GAIN             0x02e
  51 #define MT9M111_GLOBAL_GAIN             0x02f
  52 #define MT9M111_CONTEXT_CONTROL         0x0c8
  53 #define MT9M111_PAGE_MAP                0x0f0
  54 #define MT9M111_BYTE_WISE_ADDR          0x0f1
  55
  56 #define MT9M111_RESET_SYNC_CHANGES      (1 << 15)
  57 #define MT9M111_RESET_RESTART_BAD_FRAME (1 << 9)
  58 #define MT9M111_RESET_SHOW_BAD_FRAMES   (1 << 8)
  59 #define MT9M111_RESET_RESET_SOC         (1 << 5)
  60 #define MT9M111_RESET_OUTPUT_DISABLE    (1 << 4)
  61 #define MT9M111_RESET_CHIP_ENABLE       (1 << 3)
  62 #define MT9M111_RESET_ANALOG_STANDBY    (1 << 2)
  63 #define MT9M111_RESET_RESTART_FRAME     (1 << 1)
  64 #define MT9M111_RESET_RESET_MODE        (1 << 0)
  65
  66 #define MT9M111_RM_FULL_POWER_RD        (0 << 10)
  67 #define MT9M111_RM_LOW_POWER_RD         (1 << 10)
  68 #define MT9M111_RM_COL_SKIP_4X          (1 << 5)
  69 #define MT9M111_RM_ROW_SKIP_4X          (1 << 4)
  70 #define MT9M111_RM_COL_SKIP_2X          (1 << 3)
  71 #define MT9M111_RM_ROW_SKIP_2X          (1 << 2)
  72 #define MT9M111_RMB_MIRROR_COLS         (1 << 1)
  73 #define MT9M111_RMB_MIRROR_ROWS         (1 << 0)
  74 #define MT9M111_CTXT_CTRL_RESTART       (1 << 15)
  75 #define MT9M111_CTXT_CTRL_DEFECTCOR_B   (1 << 12)
  76 #define MT9M111_CTXT_CTRL_RESIZE_B      (1 << 10)
  77 #define MT9M111_CTXT_CTRL_CTRL2_B       (1 << 9)
  78 #define MT9M111_CTXT_CTRL_GAMMA_B       (1 << 8)
  79 #define MT9M111_CTXT_CTRL_XENON_EN      (1 << 7)
  80 #define MT9M111_CTXT_CTRL_READ_MODE_B   (1 << 3)
  81 #define MT9M111_CTXT_CTRL_LED_FLASH_EN  (1 << 2)
  82 #define MT9M111_CTXT_CTRL_VBLANK_SEL_B  (1 << 1)
  83 #define MT9M111_CTXT_CTRL_HBLANK_SEL_B  (1 << 0)
  84
  85 /*
  86  * Colorpipe register addresses (0x100..0x1ff)
  87  */
  88 #define MT9M111_OPER_MODE_CTRL          0x106
  89 #define MT9M111_OUTPUT_FORMAT_CTRL      0x108
  90 #define MT9M111_REDUCER_XZOOM_B         0x1a0
  91 #define MT9M111_REDUCER_XSIZE_B         0x1a1
  92 #define MT9M111_REDUCER_YZOOM_B         0x1a3
  93 #define MT9M111_REDUCER_YSIZE_B         0x1a4
  94 #define MT9M111_REDUCER_XZOOM_A         0x1a6
  95 #define MT9M111_REDUCER_XSIZE_A         0x1a7
  96 #define MT9M111_REDUCER_YZOOM_A         0x1a9
  97 #define MT9M111_REDUCER_YSIZE_A         0x1aa
  98
  99 #define MT9M111_OUTPUT_FORMAT_CTRL2_A   0x13a
 100 #define MT9M111_OUTPUT_FORMAT_CTRL2_B   0x19b
 101
 102 #define MT9M111_OPMODE_AUTOEXPO_EN      (1 << 14)
 103 #define MT9M111_OPMODE_AUTOWHITEBAL_EN  (1 << 1)
 104 #define MT9M111_OUTFMT_FLIP_BAYER_COL   (1 << 9)
 105 #define MT9M111_OUTFMT_FLIP_BAYER_ROW   (1 << 8)
 106 #define MT9M111_OUTFMT_PROCESSED_BAYER  (1 << 14)
 107 #define MT9M111_OUTFMT_BYPASS_IFP       (1 << 10)
 108 #define MT9M111_OUTFMT_INV_PIX_CLOCK    (1 << 9)
 109 #define MT9M111_OUTFMT_RGB              (1 << 8)
 110 #define MT9M111_OUTFMT_RGB565           (0 << 6)
 111 #define MT9M111_OUTFMT_RGB555           (1 << 6)
 112 #define MT9M111_OUTFMT_RGB444x          (2 << 6)
 113 #define MT9M111_OUTFMT_RGBx444          (3 << 6)
 114 #define MT9M111_OUTFMT_TST_RAMP_OFF     (0 << 4)
 115 #define MT9M111_OUTFMT_TST_RAMP_COL     (1 << 4)
 116 #define MT9M111_OUTFMT_TST_RAMP_ROW     (2 << 4)
 117 #define MT9M111_OUTFMT_TST_RAMP_FRAME   (3 << 4)
 118 #define MT9M111_OUTFMT_SHIFT_3_UP       (1 << 3)
 119 #define MT9M111_OUTFMT_AVG_CHROMA       (1 << 2)
 120 #define MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN  (1 << 1)
 121 #define MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B (1 << 0)
 122
 123 /*
 124  * Camera control register addresses (0x200..0x2ff not implemented)
 125  */
 126
 127 #define reg_read(reg) mt9m111_reg_read(client, MT9M111_##reg)
 128 #define reg_write(reg, val) mt9m111_reg_write(client, MT9M111_##reg, (val))
 129 #define reg_set(reg, val) mt9m111_reg_set(client, MT9M111_##reg, (val))
 130 #define reg_clear(reg, val) mt9m111_reg_clear(client, MT9M111_##reg, (val))
 131 #define reg_mask(reg, val, mask) mt9m111_reg_mask(client, MT9M111_##reg, \
 132                 (val), (mask))
 133
 134 #define MT9M111_MIN_DARK_ROWS   8
 135 #define MT9M111_MIN_DARK_COLS   26
 136 #define MT9M111_MAX_HEIGHT      1024
 137 #define MT9M111_MAX_WIDTH       1280
 138
 139 /* MT9M111 has only one fixed colorspace per pixelcode */
 140 struct mt9m111_datafmt {
 141         enum v4l2_mbus_pixelcode        code;
 142         enum v4l2_colorspace            colorspace;
 143 };
 144
 145 /* Find a data format by a pixel code in an array */
 146 static const struct mt9m111_datafmt *mt9m111_find_datafmt(
 147         enum v4l2_mbus_pixelcode code, const struct mt9m111_datafmt *fmt,
 148         int n)
 149 {
 150         int i;
 151         for (i = 0; i < n; i++)
 152                 if (fmt[i].code == code)
 153                         return fmt + i;
 154
 155         return NULL;
 156 }
 157
 158 static const struct mt9m111_datafmt mt9m111_colour_fmts[] = {
 159         {V4L2_MBUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_JPEG},
 160         {V4L2_MBUS_FMT_YVYU8_2X8, V4L2_COLORSPACE_JPEG},
 161         {V4L2_MBUS_FMT_UYVY8_2X8, V4L2_COLORSPACE_JPEG},
 162         {V4L2_MBUS_FMT_VYUY8_2X8, V4L2_COLORSPACE_JPEG},
 163         {V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB},
 164         {V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE, V4L2_COLORSPACE_SRGB},
 165         {V4L2_MBUS_FMT_RGB565_2X8_LE, V4L2_COLORSPACE_SRGB},
 166         {V4L2_MBUS_FMT_RGB565_2X8_BE, V4L2_COLORSPACE_SRGB},
 167         {V4L2_MBUS_FMT_BGR565_2X8_LE, V4L2_COLORSPACE_SRGB},
 168         {V4L2_MBUS_FMT_BGR565_2X8_BE, V4L2_COLORSPACE_SRGB},
 169         {V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB},
 170         {V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB},
 171 };
 172
 173 enum mt9m111_context {
 174         HIGHPOWER = 0,
 175         LOWPOWER,
 176 };
 177
 178 struct mt9m111 {
 179         struct v4l2_subdev subdev;
 180         int model;      /* V4L2_IDENT_MT9M111 or V4L2_IDENT_MT9M112 code
 181                          * from v4l2-chip-ident.h */
 182         enum mt9m111_context context;
 183         struct v4l2_rect rect;
 184         struct mutex power_lock; /* lock to protect power_count */
 185         int power_count;
 186         const struct mt9m111_datafmt *fmt;
 187         unsigned int gain;
 188         unsigned char autoexposure;
 189         unsigned char datawidth;
 190         unsigned int powered:1;
 191         unsigned int hflip:1;
 192         unsigned int vflip:1;
 193         unsigned int autowhitebalance:1;
 194 };
 195
 196 static struct mt9m111 *to_mt9m111(const struct i2c_client *client)
 197 {
 198         return container_of(i2c_get_clientdata(client), struct mt9m111, subdev);
 199 }
 200
 201 static int reg_page_map_set(struct i2c_client *client, const u16 reg)
 202 {
 203         int ret;
 204         u16 page;
 205         static int lastpage = -1;       /* PageMap cache value */
 206
 207         page = (reg >> 8);
 208         if (page == lastpage)
 209                 return 0;
 210         if (page > 2)
 211                 return -EINVAL;
 212
 213         ret = i2c_smbus_write_word_data(client, MT9M111_PAGE_MAP, swab16(page));
 214         if (!ret)
 215                 lastpage = page;
 216         return ret;
 217 }
 218
 219 static int mt9m111_reg_read(struct i2c_client *client, const u16 reg)
 220 {
 221         int ret;
 222
 223         ret = reg_page_map_set(client, reg);
 224         if (!ret)
 225                 ret = swab16(i2c_smbus_read_word_data(client, reg & 0xff));
 226
 227         dev_dbg(&client->dev, "read  reg.%03x -> %04x\n", reg, ret);
 228         return ret;
 229 }
 230
 231 static int mt9m111_reg_write(struct i2c_client *client, const u16 reg,
 232                              const u16 data)
 233 {
 234         int ret;
 235
 236         ret = reg_page_map_set(client, reg);
 237         if (!ret)
 238                 ret = i2c_smbus_write_word_data(client, reg & 0xff,
 239                                                 swab16(data));
 240         dev_dbg(&client->dev, "write reg.%03x = %04x -> %d\n", reg, data, ret);
 241         return ret;
 242 }
 243
 244 static int mt9m111_reg_set(struct i2c_client *client, const u16 reg,
 245                            const u16 data)
 246 {
 247         int ret;
 248
 249         ret = mt9m111_reg_read(client, reg);
 250         if (ret >= 0)
 251                 ret = mt9m111_reg_write(client, reg, ret | data);
 252         return ret;
 253 }
 254
 255 static int mt9m111_reg_clear(struct i2c_client *client, const u16 reg,
 256                              const u16 data)
 257 {
 258         int ret;
 259
 260         ret = mt9m111_reg_read(client, reg);
 261         if (ret >= 0)
 262                 ret = mt9m111_reg_write(client, reg, ret & ~data);
 263         return ret;
 264 }
 265
 266 static int mt9m111_reg_mask(struct i2c_client *client, const u16 reg,
 267                             const u16 data, const u16 mask)
 268 {
 269         int ret;
 270
 271         ret = mt9m111_reg_read(client, reg);
 272         if (ret >= 0)
 273                 ret = mt9m111_reg_write(client, reg, (ret & ~mask) | data);
 274         return ret;
 275 }
 276
 277 static int mt9m111_set_context(struct mt9m111 *mt9m111,
 278                                enum mt9m111_context ctxt)
 279 {
 280         struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
 281         int valB = MT9M111_CTXT_CTRL_RESTART | MT9M111_CTXT_CTRL_DEFECTCOR_B
 282                 | MT9M111_CTXT_CTRL_RESIZE_B | MT9M111_CTXT_CTRL_CTRL2_B
 283                 | MT9M111_CTXT_CTRL_GAMMA_B | MT9M111_CTXT_CTRL_READ_MODE_B
 284                 | MT9M111_CTXT_CTRL_VBLANK_SEL_B
 285                 | MT9M111_CTXT_CTRL_HBLANK_SEL_B;
 286         int valA = MT9M111_CTXT_CTRL_RESTART;
 287
 288         if (ctxt == HIGHPOWER)
 289                 return reg_write(CONTEXT_CONTROL, valB);
 290         else
 291                 return reg_write(CONTEXT_CONTROL, valA);
 292 }
 293
 294 static int mt9m111_setup_rect(struct mt9m111 *mt9m111,
 295                               struct v4l2_rect *rect)
 296 {
 297         struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
 298         int ret, is_raw_format;
 299         int width = rect->width;
 300         int height = rect->height;
 301
 302         if (mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR8_1X8 ||
 303             mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE)
 304                 is_raw_format = 1;
 305         else
 306                 is_raw_format = 0;
 307
 308         ret = reg_write(COLUMN_START, rect->left);
 309         if (!ret)
 310                 ret = reg_write(ROW_START, rect->top);
 311
 312         if (is_raw_format) {
 313                 if (!ret)
 314                         ret = reg_write(WINDOW_WIDTH, width);
 315                 if (!ret)
 316                         ret = reg_write(WINDOW_HEIGHT, height);
 317         } else {
 318                 if (!ret)
 319                         ret = reg_write(REDUCER_XZOOM_B, MT9M111_MAX_WIDTH);
 320                 if (!ret)
 321                         ret = reg_write(REDUCER_YZOOM_B, MT9M111_MAX_HEIGHT);
 322                 if (!ret)
 323                         ret = reg_write(REDUCER_XSIZE_B, width);
 324                 if (!ret)
 325                         ret = reg_write(REDUCER_YSIZE_B, height);
 326                 if (!ret)
 327                         ret = reg_write(REDUCER_XZOOM_A, MT9M111_MAX_WIDTH);
 328                 if (!ret)
 329                         ret = reg_write(REDUCER_YZOOM_A, MT9M111_MAX_HEIGHT);
 330                 if (!ret)
 331                         ret = reg_write(REDUCER_XSIZE_A, width);
 332                 if (!ret)
 333                         ret = reg_write(REDUCER_YSIZE_A, height);
 334         }
 335
 336         return ret;
 337 }
 338
 339 static int mt9m111_enable(struct mt9m111 *mt9m111)
 340 {
 341         struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
 342         int ret;
 343
 344         ret = reg_set(RESET, MT9M111_RESET_CHIP_ENABLE);
 345         if (!ret)
 346                 mt9m111->powered = 1;
 347         return ret;
 348 }
 349
 350 static int mt9m111_reset(struct mt9m111 *mt9m111)
 351 {
 352         struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
 353         int ret;
 354
 355         ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
 356         if (!ret)
 357                 ret = reg_set(RESET, MT9M111_RESET_RESET_SOC);
 358         if (!ret)
 359                 ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE
 360                                 | MT9M111_RESET_RESET_SOC);
 361
 362         return ret;
 363 }
 364
 365 static unsigned long mt9m111_query_bus_param(struct soc_camera_device *icd)
 366 {
 367         struct soc_camera_link *icl = to_soc_camera_link(icd);
 368         unsigned long flags = SOCAM_MASTER | SOCAM_PCLK_SAMPLE_RISING |
 369                 SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH |
 370                 SOCAM_DATA_ACTIVE_HIGH | SOCAM_DATAWIDTH_8;
 371
 372         return soc_camera_apply_sensor_flags(icl, flags);
 373 }
 374
 375 static int mt9m111_set_bus_param(struct soc_camera_device *icd, unsigned long f)
 376 {
 377         return 0;
 378 }
 379
 380 static int mt9m111_make_rect(struct mt9m111 *mt9m111,
 381                              struct v4l2_rect *rect)
 382 {
 383         if (mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR8_1X8 ||
 384             mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE) {
 385                 /* Bayer format - even size lengths */
 386                 rect->width     = ALIGN(rect->width, 2);
 387                 rect->height    = ALIGN(rect->height, 2);
 388                 /* Let the user play with the starting pixel */
 389         }
 390
 391         /* FIXME: the datasheet doesn't specify minimum sizes */
 392         soc_camera_limit_side(&rect->left, &rect->width,
 393                      MT9M111_MIN_DARK_COLS, 2, MT9M111_MAX_WIDTH);
 394
 395         soc_camera_limit_side(&rect->top, &rect->height,
 396                      MT9M111_MIN_DARK_ROWS, 2, MT9M111_MAX_HEIGHT);
 397
 398         return mt9m111_setup_rect(mt9m111, rect);
 399 }
 400
 401 static int mt9m111_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
 402 {
 403         struct v4l2_rect rect = a->c;
 404         struct i2c_client *client = v4l2_get_subdevdata(sd);
 405         struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
 406         int ret;
 407
 408         dev_dbg(&client->dev, "%s left=%d, top=%d, width=%d, height=%d\n",
 409                 __func__, rect.left, rect.top, rect.width, rect.height);
 410
 411         if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 412                 return -EINVAL;
 413
 414         ret = mt9m111_make_rect(mt9m111, &rect);
 415         if (!ret)
 416                 mt9m111->rect = rect;
 417         return ret;
 418 }
 419
 420 static int mt9m111_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
 421 {
 422         struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
 423
 424         a->c    = mt9m111->rect;
 425         a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 426
 427         return 0;
 428 }
 429
 430 static int mt9m111_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
 431 {
 432         if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 433                 return -EINVAL;
 434
 435         a->bounds.left                  = MT9M111_MIN_DARK_COLS;
 436         a->bounds.top                   = MT9M111_MIN_DARK_ROWS;
 437         a->bounds.width                 = MT9M111_MAX_WIDTH;
 438         a->bounds.height                = MT9M111_MAX_HEIGHT;
 439         a->defrect                      = a->bounds;
 440         a->pixelaspect.numerator        = 1;
 441         a->pixelaspect.denominator      = 1;
 442
 443         return 0;
 444 }
 445
 446 static int mt9m111_g_fmt(struct v4l2_subdev *sd,
 447                          struct v4l2_mbus_framefmt *mf)
 448 {
 449         struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
 450
 451         mf->width       = mt9m111->rect.width;
 452         mf->height      = mt9m111->rect.height;
 453         mf->code        = mt9m111->fmt->code;
 454         mf->colorspace  = mt9m111->fmt->colorspace;
 455         mf->field       = V4L2_FIELD_NONE;
 456
 457         return 0;
 458 }
 459
 460 static int mt9m111_set_pixfmt(struct mt9m111 *mt9m111,
 461                               enum v4l2_mbus_pixelcode code)
 462 {
 463         struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
 464         u16 data_outfmt2, mask_outfmt2 = MT9M111_OUTFMT_PROCESSED_BAYER |
 465                 MT9M111_OUTFMT_BYPASS_IFP | MT9M111_OUTFMT_RGB |
 466                 MT9M111_OUTFMT_RGB565 | MT9M111_OUTFMT_RGB555 |
 467                 MT9M111_OUTFMT_RGB444x | MT9M111_OUTFMT_RGBx444 |
 468                 MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN |
 469                 MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
 470         int ret;
 471
 472         switch (code) {
 473         case V4L2_MBUS_FMT_SBGGR8_1X8:
 474                 data_outfmt2 = MT9M111_OUTFMT_PROCESSED_BAYER |
 475                         MT9M111_OUTFMT_RGB;
 476                 break;
 477         case V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE:
 478                 data_outfmt2 = MT9M111_OUTFMT_BYPASS_IFP | MT9M111_OUTFMT_RGB;
 479                 break;
 480         case V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE:
 481                 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555 |
 482                         MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN;
 483                 break;
 484         case V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE:
 485                 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555;
 486                 break;
 487         case V4L2_MBUS_FMT_RGB565_2X8_LE:
 488                 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565 |
 489                         MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN;
 490                 break;
 491         case V4L2_MBUS_FMT_RGB565_2X8_BE:
 492                 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565;
 493                 break;
 494         case V4L2_MBUS_FMT_BGR565_2X8_BE:
 495                 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565 |
 496                         MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
 497                 break;
 498         case V4L2_MBUS_FMT_BGR565_2X8_LE:
 499                 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565 |
 500                         MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN |
 501                         MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
 502                 break;
 503         case V4L2_MBUS_FMT_UYVY8_2X8:
 504                 data_outfmt2 = 0;
 505                 break;
 506         case V4L2_MBUS_FMT_VYUY8_2X8:
 507                 data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
 508                 break;
 509         case V4L2_MBUS_FMT_YUYV8_2X8:
 510                 data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN;
 511                 break;
 512         case V4L2_MBUS_FMT_YVYU8_2X8:
 513                 data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN |
 514                         MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
 515                 break;
 516         default:
 517                 dev_err(&client->dev, "Pixel format not handled: %x\n", code);
 518                 return -EINVAL;
 519         }
 520
 521         ret = reg_mask(OUTPUT_FORMAT_CTRL2_A, data_outfmt2,
 522                        mask_outfmt2);
 523         if (!ret)
 524                 ret = reg_mask(OUTPUT_FORMAT_CTRL2_B, data_outfmt2,
 525                                mask_outfmt2);
 526
 527         return ret;
 528 }
 529
 530 static int mt9m111_s_fmt(struct v4l2_subdev *sd,
 531                          struct v4l2_mbus_framefmt *mf)
 532 {
 533         struct i2c_client *client = v4l2_get_subdevdata(sd);
 534         const struct mt9m111_datafmt *fmt;
 535         struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
 536         struct v4l2_rect rect = {
 537                 .left   = mt9m111->rect.left,
 538                 .top    = mt9m111->rect.top,
 539                 .width  = mf->width,
 540                 .height = mf->height,
 541         };
 542         int ret;
 543
 544         fmt = mt9m111_find_datafmt(mf->code, mt9m111_colour_fmts,
 545                                    ARRAY_SIZE(mt9m111_colour_fmts));
 546         if (!fmt)
 547                 return -EINVAL;
 548
 549         dev_dbg(&client->dev,
 550                 "%s code=%x left=%d, top=%d, width=%d, height=%d\n", __func__,
 551                 mf->code, rect.left, rect.top, rect.width, rect.height);
 552
 553         ret = mt9m111_make_rect(mt9m111, &rect);
 554         if (!ret)
 555                 ret = mt9m111_set_pixfmt(mt9m111, mf->code);
 556         if (!ret) {
 557                 mt9m111->rect   = rect;
 558                 mt9m111->fmt    = fmt;
 559                 mf->colorspace  = fmt->colorspace;
 560         }
 561
 562         return ret;
 563 }
 564
 565 static int mt9m111_try_fmt(struct v4l2_subdev *sd,
 566                            struct v4l2_mbus_framefmt *mf)
 567 {
 568         struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
 569         const struct mt9m111_datafmt *fmt;
 570         bool bayer = mf->code == V4L2_MBUS_FMT_SBGGR8_1X8 ||
 571                 mf->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE;
 572
 573         fmt = mt9m111_find_datafmt(mf->code, mt9m111_colour_fmts,
 574                                    ARRAY_SIZE(mt9m111_colour_fmts));
 575         if (!fmt) {
 576                 fmt = mt9m111->fmt;
 577                 mf->code = fmt->code;
 578         }
 579
 580         /*
 581          * With Bayer format enforce even side lengths, but let the user play
 582          * with the starting pixel
 583          */
 584
 585         if (mf->height > MT9M111_MAX_HEIGHT)
 586                 mf->height = MT9M111_MAX_HEIGHT;
 587         else if (mf->height < 2)
 588                 mf->height = 2;
 589         else if (bayer)
 590                 mf->height = ALIGN(mf->height, 2);
 591
 592         if (mf->width > MT9M111_MAX_WIDTH)
 593                 mf->width = MT9M111_MAX_WIDTH;
 594         else if (mf->width < 2)
 595                 mf->width = 2;
 596         else if (bayer)
 597                 mf->width = ALIGN(mf->width, 2);
 598
 599         mf->colorspace = fmt->colorspace;
 600
 601         return 0;
 602 }
 603
 604 static int mt9m111_g_chip_ident(struct v4l2_subdev *sd,
 605                                 struct v4l2_dbg_chip_ident *id)
 606 {
 607         struct i2c_client *client = v4l2_get_subdevdata(sd);
 608         struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
 609
 610         if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
 611                 return -EINVAL;
 612
 613         if (id->match.addr != client->addr)
 614                 return -ENODEV;
 615
 616         id->ident       = mt9m111->model;
 617         id->revision    = 0;
 618
 619         return 0;
 620 }
 621
 622 #ifdef CONFIG_VIDEO_ADV_DEBUG
 623 static int mt9m111_g_register(struct v4l2_subdev *sd,
 624                               struct v4l2_dbg_register *reg)
 625 {
 626         struct i2c_client *client = v4l2_get_subdevdata(sd);
 627         int val;
 628
 629         if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
 630                 return -EINVAL;
 631         if (reg->match.addr != client->addr)
 632                 return -ENODEV;
 633
 634         val = mt9m111_reg_read(client, reg->reg);
 635         reg->size = 2;
 636         reg->val = (u64)val;
 637
 638         if (reg->val > 0xffff)
 639                 return -EIO;
 640
 641         return 0;
 642 }
 643
 644 static int mt9m111_s_register(struct v4l2_subdev *sd,
 645                               struct v4l2_dbg_register *reg)
 646 {
 647         struct i2c_client *client = v4l2_get_subdevdata(sd);
 648
 649         if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
 650                 return -EINVAL;
 651
 652         if (reg->match.addr != client->addr)
 653                 return -ENODEV;
 654
 655         if (mt9m111_reg_write(client, reg->reg, reg->val) < 0)
 656                 return -EIO;
 657
 658         return 0;
 659 }
 660 #endif
 661
 662 static const struct v4l2_queryctrl mt9m111_controls[] = {
 663         {
 664                 .id             = V4L2_CID_VFLIP,
 665                 .type           = V4L2_CTRL_TYPE_BOOLEAN,
 666                 .name           = "Flip Verticaly",
 667                 .minimum        = 0,
 668                 .maximum        = 1,
 669                 .step           = 1,
 670                 .default_value  = 0,
 671         }, {
 672                 .id             = V4L2_CID_HFLIP,
 673                 .type           = V4L2_CTRL_TYPE_BOOLEAN,
 674                 .name           = "Flip Horizontaly",
 675                 .minimum        = 0,
 676                 .maximum        = 1,
 677                 .step           = 1,
 678                 .default_value  = 0,
 679         }, {    /* gain = 1/32*val (=>gain=1 if val==32) */
 680                 .id             = V4L2_CID_GAIN,
 681                 .type           = V4L2_CTRL_TYPE_INTEGER,
 682                 .name           = "Gain",
 683                 .minimum        = 0,
 684                 .maximum        = 63 * 2 * 2,
 685                 .step           = 1,
 686                 .default_value  = 32,
 687                 .flags          = V4L2_CTRL_FLAG_SLIDER,
 688         }, {
 689                 .id             = V4L2_CID_EXPOSURE_AUTO,
 690                 .type           = V4L2_CTRL_TYPE_BOOLEAN,
 691                 .name           = "Auto Exposure",
 692                 .minimum        = 0,
 693                 .maximum        = 1,
 694                 .step           = 1,
 695                 .default_value  = 1,
 696         }
 697 };
 698
 699 static struct soc_camera_ops mt9m111_ops = {
 700         .query_bus_param        = mt9m111_query_bus_param,
 701         .set_bus_param          = mt9m111_set_bus_param,
 702         .controls               = mt9m111_controls,
 703         .num_controls           = ARRAY_SIZE(mt9m111_controls),
 704 };
 705
 706 static int mt9m111_set_flip(struct mt9m111 *mt9m111, int flip, int mask)
 707 {
 708         struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
 709         int ret;
 710
 711         if (mt9m111->context == HIGHPOWER) {
 712                 if (flip)
 713                         ret = reg_set(READ_MODE_B, mask);
 714                 else
 715                         ret = reg_clear(READ_MODE_B, mask);
 716         } else {
 717                 if (flip)
 718                         ret = reg_set(READ_MODE_A, mask);
 719                 else
 720                         ret = reg_clear(READ_MODE_A, mask);
 721         }
 722
 723         return ret;
 724 }
 725
 726 static int mt9m111_get_global_gain(struct mt9m111 *mt9m111)
 727 {
 728         struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
 729         int data;
 730
 731         data = reg_read(GLOBAL_GAIN);
 732         if (data >= 0)
 733                 return (data & 0x2f) * (1 << ((data >> 10) & 1)) *
 734                         (1 << ((data >> 9) & 1));
 735         return data;
 736 }
 737
 738 static int mt9m111_set_global_gain(struct mt9m111 *mt9m111, int gain)
 739 {
 740         struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
 741         u16 val;
 742
 743         if (gain > 63 * 2 * 2)
 744                 return -EINVAL;
 745
 746         mt9m111->gain = gain;
 747         if ((gain >= 64 * 2) && (gain < 63 * 2 * 2))
 748                 val = (1 << 10) | (1 << 9) | (gain / 4);
 749         else if ((gain >= 64) && (gain < 64 * 2))
 750                 val = (1 << 9) | (gain / 2);
 751         else
 752                 val = gain;
 753
 754         return reg_write(GLOBAL_GAIN, val);
 755 }
 756
 757 static int mt9m111_set_autoexposure(struct mt9m111 *mt9m111, int on)
 758 {
 759         struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
 760         int ret;
 761
 762         if (on)
 763                 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
 764         else
 765                 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
 766
 767         if (!ret)
 768                 mt9m111->autoexposure = on;
 769
 770         return ret;
 771 }
 772
 773 static int mt9m111_set_autowhitebalance(struct mt9m111 *mt9m111, int on)
 774 {
 775         struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
 776         int ret;
 777
 778         if (on)
 779                 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
 780         else
 781                 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
 782
 783         if (!ret)
 784                 mt9m111->autowhitebalance = on;
 785
 786         return ret;
 787 }
 788
 789 static int mt9m111_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
 790 {
 791         struct i2c_client *client = v4l2_get_subdevdata(sd);
 792         struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
 793         int data;
 794
 795         switch (ctrl->id) {
 796         case V4L2_CID_VFLIP:
 797                 if (mt9m111->context == HIGHPOWER)
 798                         data = reg_read(READ_MODE_B);
 799                 else
 800                         data = reg_read(READ_MODE_A);
 801
 802                 if (data < 0)
 803                         return -EIO;
 804                 ctrl->value = !!(data & MT9M111_RMB_MIRROR_ROWS);
 805                 break;
 806         case V4L2_CID_HFLIP:
 807                 if (mt9m111->context == HIGHPOWER)
 808                         data = reg_read(READ_MODE_B);
 809                 else
 810                         data = reg_read(READ_MODE_A);
 811
 812                 if (data < 0)
 813                         return -EIO;
 814                 ctrl->value = !!(data & MT9M111_RMB_MIRROR_COLS);
 815                 break;
 816         case V4L2_CID_GAIN:
 817                 data = mt9m111_get_global_gain(mt9m111);
 818                 if (data < 0)
 819                         return data;
 820                 ctrl->value = data;
 821                 break;
 822         case V4L2_CID_EXPOSURE_AUTO:
 823                 ctrl->value = mt9m111->autoexposure;
 824                 break;
 825         case V4L2_CID_AUTO_WHITE_BALANCE:
 826                 ctrl->value = mt9m111->autowhitebalance;
 827                 break;
 828         }
 829         return 0;
 830 }
 831
 832 static int mt9m111_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
 833 {
 834         struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
 835         const struct v4l2_queryctrl *qctrl;
 836         int ret;
 837
 838         qctrl = soc_camera_find_qctrl(&mt9m111_ops, ctrl->id);
 839         if (!qctrl)
 840                 return -EINVAL;
 841
 842         switch (ctrl->id) {
 843         case V4L2_CID_VFLIP:
 844                 mt9m111->vflip = ctrl->value;
 845                 ret = mt9m111_set_flip(mt9m111, ctrl->value,
 846                                         MT9M111_RMB_MIRROR_ROWS);
 847                 break;
 848         case V4L2_CID_HFLIP:
 849                 mt9m111->hflip = ctrl->value;
 850                 ret = mt9m111_set_flip(mt9m111, ctrl->value,
 851                                         MT9M111_RMB_MIRROR_COLS);
 852                 break;
 853         case V4L2_CID_GAIN:
 854                 ret = mt9m111_set_global_gain(mt9m111, ctrl->value);
 855                 break;
 856         case V4L2_CID_EXPOSURE_AUTO:
 857                 ret =  mt9m111_set_autoexposure(mt9m111, ctrl->value);
 858                 break;
 859         case V4L2_CID_AUTO_WHITE_BALANCE:
 860                 ret =  mt9m111_set_autowhitebalance(mt9m111, ctrl->value);
 861                 break;
 862         default:
 863                 ret = -EINVAL;
 864         }
 865
 866         return ret;
 867 }
 868
 869 static int mt9m111_suspend(struct mt9m111 *mt9m111)
 870 {
 871         mt9m111->gain = mt9m111_get_global_gain(mt9m111);
 872
 873         return 0;
 874 }
 875
 876 static void mt9m111_restore_state(struct mt9m111 *mt9m111)
 877 {
 878         mt9m111_set_context(mt9m111, mt9m111->context);
 879         mt9m111_set_pixfmt(mt9m111, mt9m111->fmt->code);
 880         mt9m111_setup_rect(mt9m111, &mt9m111->rect);
 881         mt9m111_set_flip(mt9m111, mt9m111->hflip, MT9M111_RMB_MIRROR_COLS);
 882         mt9m111_set_flip(mt9m111, mt9m111->vflip, MT9M111_RMB_MIRROR_ROWS);
 883         mt9m111_set_global_gain(mt9m111, mt9m111->gain);
 884         mt9m111_set_autoexposure(mt9m111, mt9m111->autoexposure);
 885         mt9m111_set_autowhitebalance(mt9m111, mt9m111->autowhitebalance);
 886 }
 887
 888 static int mt9m111_resume(struct mt9m111 *mt9m111)
 889 {
 890         int ret = 0;
 891
 892         if (mt9m111->powered) {
 893                 ret = mt9m111_enable(mt9m111);
 894                 if (!ret)
 895                         ret = mt9m111_reset(mt9m111);
 896                 if (!ret)
 897                         mt9m111_restore_state(mt9m111);
 898         }
 899         return ret;
 900 }
 901
 902 static int mt9m111_init(struct mt9m111 *mt9m111)
 903 {
 904         struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
 905         int ret;
 906
 907         mt9m111->context = HIGHPOWER;
 908         ret = mt9m111_enable(mt9m111);
 909         if (!ret)
 910                 ret = mt9m111_reset(mt9m111);
 911         if (!ret)
 912                 ret = mt9m111_set_context(mt9m111, mt9m111->context);
 913         if (!ret)
 914                 ret = mt9m111_set_autoexposure(mt9m111, mt9m111->autoexposure);
 915         if (ret)
 916                 dev_err(&client->dev, "mt9m111 init failed: %d\n", ret);
 917         return ret;
 918 }
 919
 920 /*
 921  * Interface active, can use i2c. If it fails, it can indeed mean, that
 922  * this wasn't our capture interface, so, we wait for the right one
 923  */
 924 static int mt9m111_video_probe(struct soc_camera_device *icd,
 925                                struct i2c_client *client)
 926 {
 927         struct mt9m111 *mt9m111 = to_mt9m111(client);
 928         s32 data;
 929         int ret;
 930
 931         /* We must have a parent by now. And it cannot be a wrong one. */
 932         BUG_ON(!icd->parent ||
 933                to_soc_camera_host(icd->parent)->nr != icd->iface);
 934
 935         mt9m111->autoexposure = 1;
 936         mt9m111->autowhitebalance = 1;
 937
 938         data = reg_read(CHIP_VERSION);
 939
 940         switch (data) {
 941         case 0x143a: /* MT9M111 or MT9M131 */
 942                 mt9m111->model = V4L2_IDENT_MT9M111;
 943                 dev_info(&client->dev,
 944                         "Detected a MT9M111/MT9M131 chip ID %x\n", data);
 945                 break;
 946         case 0x148c: /* MT9M112 */
 947                 mt9m111->model = V4L2_IDENT_MT9M112;
 948                 dev_info(&client->dev, "Detected a MT9M112 chip ID %x\n", data);
 949                 break;
 950         default:
 951                 ret = -ENODEV;
 952                 dev_err(&client->dev,
 953                         "No MT9M111/MT9M112/MT9M131 chip detected register read %x\n",
 954                         data);
 955                 goto ei2c;
 956         }
 957
 958         ret = mt9m111_init(mt9m111);
 959
 960 ei2c:
 961         return ret;
 962 }
 963
 964 static int mt9m111_s_power(struct v4l2_subdev *sd, int on)
 965 {
 966         struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
 967         struct i2c_client *client = v4l2_get_subdevdata(sd);
 968         int ret = 0;
 969
 970         mutex_lock(&mt9m111->power_lock);
 971
 972         /*
 973          * If the power count is modified from 0 to != 0 or from != 0 to 0,
 974          * update the power state.
 975          */
 976         if (mt9m111->power_count == !on) {
 977                 if (on) {
 978                         ret = mt9m111_resume(mt9m111);
 979                         if (ret) {
 980                                 dev_err(&client->dev,
 981                                         "Failed to resume the sensor: %d\n", ret);
 982                                 goto out;
 983                         }
 984                 } else {
 985                         mt9m111_suspend(mt9m111);
 986                 }
 987         }
 988
 989         /* Update the power count. */
 990         mt9m111->power_count += on ? 1 : -1;
 991         WARN_ON(mt9m111->power_count < 0);
 992
 993 out:
 994         mutex_unlock(&mt9m111->power_lock);
 995         return ret;
 996 }
 997
 998 static struct v4l2_subdev_core_ops mt9m111_subdev_core_ops = {
 999         .g_ctrl         = mt9m111_g_ctrl,
1000         .s_ctrl         = mt9m111_s_ctrl,
1001         .g_chip_ident   = mt9m111_g_chip_ident,
1002         .s_power        = mt9m111_s_power,
1003 #ifdef CONFIG_VIDEO_ADV_DEBUG
1004         .g_register     = mt9m111_g_register,
1005         .s_register     = mt9m111_s_register,
1006 #endif
1007 };
1008
1009 static int mt9m111_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
1010                             enum v4l2_mbus_pixelcode *code)
1011 {
1012         if (index >= ARRAY_SIZE(mt9m111_colour_fmts))
1013                 return -EINVAL;
1014
1015         *code = mt9m111_colour_fmts[index].code;
1016         return 0;
1017 }
1018
1019 static struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = {
1020         .s_mbus_fmt     = mt9m111_s_fmt,
1021         .g_mbus_fmt     = mt9m111_g_fmt,
1022         .try_mbus_fmt   = mt9m111_try_fmt,
1023         .s_crop         = mt9m111_s_crop,
1024         .g_crop         = mt9m111_g_crop,
1025         .cropcap        = mt9m111_cropcap,
1026         .enum_mbus_fmt  = mt9m111_enum_fmt,
1027 };
1028
1029 static struct v4l2_subdev_ops mt9m111_subdev_ops = {
1030         .core   = &mt9m111_subdev_core_ops,
1031         .video  = &mt9m111_subdev_video_ops,
1032 };
1033
1034 static int mt9m111_probe(struct i2c_client *client,
1035                          const struct i2c_device_id *did)
1036 {
1037         struct mt9m111 *mt9m111;
1038         struct soc_camera_device *icd = client->dev.platform_data;
1039         struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
1040         struct soc_camera_link *icl;
1041         int ret;
1042
1043         if (!icd) {
1044                 dev_err(&client->dev, "mt9m111: soc-camera data missing!\n");
1045                 return -EINVAL;
1046         }
1047
1048         icl = to_soc_camera_link(icd);
1049         if (!icl) {
1050                 dev_err(&client->dev, "mt9m111: driver needs platform data\n");
1051                 return -EINVAL;
1052         }
1053
1054         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
1055                 dev_warn(&adapter->dev,
1056                          "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
1057                 return -EIO;
1058         }
1059
1060         mt9m111 = kzalloc(sizeof(struct mt9m111), GFP_KERNEL);
1061         if (!mt9m111)
1062                 return -ENOMEM;
1063
1064         v4l2_i2c_subdev_init(&mt9m111->subdev, client, &mt9m111_subdev_ops);
1065
1066         /* Second stage probe - when a capture adapter is there */
1067         icd->ops                = &mt9m111_ops;
1068
1069         mt9m111->rect.left      = MT9M111_MIN_DARK_COLS;
1070         mt9m111->rect.top       = MT9M111_MIN_DARK_ROWS;
1071         mt9m111->rect.width     = MT9M111_MAX_WIDTH;
1072         mt9m111->rect.height    = MT9M111_MAX_HEIGHT;
1073         mt9m111->fmt            = &mt9m111_colour_fmts[0];
1074
1075         ret = mt9m111_video_probe(icd, client);
1076         if (ret) {
1077                 icd->ops = NULL;
1078                 kfree(mt9m111);
1079         }
1080
1081         return ret;
1082 }
1083
1084 static int mt9m111_remove(struct i2c_client *client)
1085 {
1086         struct mt9m111 *mt9m111 = to_mt9m111(client);
1087         struct soc_camera_device *icd = client->dev.platform_data;
1088
1089         icd->ops = NULL;
1090         kfree(mt9m111);
1091
1092         return 0;
1093 }
1094
1095 static const struct i2c_device_id mt9m111_id[] = {
1096         { "mt9m111", 0 },
1097         { }
1098 };
1099 MODULE_DEVICE_TABLE(i2c, mt9m111_id);
1100
1101 static struct i2c_driver mt9m111_i2c_driver = {
1102         .driver = {
1103                 .name = "mt9m111",
1104         },
1105         .probe          = mt9m111_probe,
1106         .remove         = mt9m111_remove,
1107         .id_table       = mt9m111_id,
1108 };
1109
1110 static int __init mt9m111_mod_init(void)
1111 {
1112         return i2c_add_driver(&mt9m111_i2c_driver);
1113 }
1114
1115 static void __exit mt9m111_mod_exit(void)
1116 {
1117         i2c_del_driver(&mt9m111_i2c_driver);
1118 }
1119
1120 module_init(mt9m111_mod_init);
1121 module_exit(mt9m111_mod_exit);
1122
1123 MODULE_DESCRIPTION("Micron/Aptina MT9M111/MT9M112/MT9M131 Camera driver");
1124 MODULE_AUTHOR("Robert Jarzmik");
1125 MODULE_LICENSE("GPL");