drivers/media/video/mt9m111.c

   1 /*
   2  * Driver for MT9M111/MT9M112 CMOS Image Sensor from Micron
   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 and mt9m112 i2c address is 0x5d or 0x48 (depending on SAddr pin)
  23  * The platform has to define i2c_board_info and call i2c_register_board_info()
  24  */
  25
  26 /* mt9m111: Sensor register addresses */
  27 #define MT9M111_CHIP_VERSION            0x000
  28 #define MT9M111_ROW_START               0x001
  29 #define MT9M111_COLUMN_START            0x002
  30 #define MT9M111_WINDOW_HEIGHT           0x003
  31 #define MT9M111_WINDOW_WIDTH            0x004
  32 #define MT9M111_HORIZONTAL_BLANKING_B   0x005
  33 #define MT9M111_VERTICAL_BLANKING_B     0x006
  34 #define MT9M111_HORIZONTAL_BLANKING_A   0x007
  35 #define MT9M111_VERTICAL_BLANKING_A     0x008
  36 #define MT9M111_SHUTTER_WIDTH           0x009
  37 #define MT9M111_ROW_SPEED               0x00a
  38 #define MT9M111_EXTRA_DELAY             0x00b
  39 #define MT9M111_SHUTTER_DELAY           0x00c
  40 #define MT9M111_RESET                   0x00d
  41 #define MT9M111_READ_MODE_B             0x020
  42 #define MT9M111_READ_MODE_A             0x021
  43 #define MT9M111_FLASH_CONTROL           0x023
  44 #define MT9M111_GREEN1_GAIN             0x02b
  45 #define MT9M111_BLUE_GAIN               0x02c
  46 #define MT9M111_RED_GAIN                0x02d
  47 #define MT9M111_GREEN2_GAIN             0x02e
  48 #define MT9M111_GLOBAL_GAIN             0x02f
  49 #define MT9M111_CONTEXT_CONTROL         0x0c8
  50 #define MT9M111_PAGE_MAP                0x0f0
  51 #define MT9M111_BYTE_WISE_ADDR          0x0f1
  52
  53 #define MT9M111_RESET_SYNC_CHANGES      (1 << 15)
  54 #define MT9M111_RESET_RESTART_BAD_FRAME (1 << 9)
  55 #define MT9M111_RESET_SHOW_BAD_FRAMES   (1 << 8)
  56 #define MT9M111_RESET_RESET_SOC         (1 << 5)
  57 #define MT9M111_RESET_OUTPUT_DISABLE    (1 << 4)
  58 #define MT9M111_RESET_CHIP_ENABLE       (1 << 3)
  59 #define MT9M111_RESET_ANALOG_STANDBY    (1 << 2)
  60 #define MT9M111_RESET_RESTART_FRAME     (1 << 1)
  61 #define MT9M111_RESET_RESET_MODE        (1 << 0)
  62
  63 #define MT9M111_RMB_MIRROR_COLS         (1 << 1)
  64 #define MT9M111_RMB_MIRROR_ROWS         (1 << 0)
  65 #define MT9M111_CTXT_CTRL_RESTART       (1 << 15)
  66 #define MT9M111_CTXT_CTRL_DEFECTCOR_B   (1 << 12)
  67 #define MT9M111_CTXT_CTRL_RESIZE_B      (1 << 10)
  68 #define MT9M111_CTXT_CTRL_CTRL2_B       (1 << 9)
  69 #define MT9M111_CTXT_CTRL_GAMMA_B       (1 << 8)
  70 #define MT9M111_CTXT_CTRL_XENON_EN      (1 << 7)
  71 #define MT9M111_CTXT_CTRL_READ_MODE_B   (1 << 3)
  72 #define MT9M111_CTXT_CTRL_LED_FLASH_EN  (1 << 2)
  73 #define MT9M111_CTXT_CTRL_VBLANK_SEL_B  (1 << 1)
  74 #define MT9M111_CTXT_CTRL_HBLANK_SEL_B  (1 << 0)
  75 /*
  76  * mt9m111: Colorpipe register addresses (0x100..0x1ff)
  77  */
  78 #define MT9M111_OPER_MODE_CTRL          0x106
  79 #define MT9M111_OUTPUT_FORMAT_CTRL      0x108
  80 #define MT9M111_REDUCER_XZOOM_B         0x1a0
  81 #define MT9M111_REDUCER_XSIZE_B         0x1a1
  82 #define MT9M111_REDUCER_YZOOM_B         0x1a3
  83 #define MT9M111_REDUCER_YSIZE_B         0x1a4
  84 #define MT9M111_REDUCER_XZOOM_A         0x1a6
  85 #define MT9M111_REDUCER_XSIZE_A         0x1a7
  86 #define MT9M111_REDUCER_YZOOM_A         0x1a9
  87 #define MT9M111_REDUCER_YSIZE_A         0x1aa
  88
  89 #define MT9M111_OUTPUT_FORMAT_CTRL2_A   0x13a
  90 #define MT9M111_OUTPUT_FORMAT_CTRL2_B   0x19b
  91
  92 #define MT9M111_OPMODE_AUTOEXPO_EN      (1 << 14)
  93 #define MT9M111_OPMODE_AUTOWHITEBAL_EN  (1 << 1)
  94
  95 #define MT9M111_OUTFMT_PROCESSED_BAYER  (1 << 14)
  96 #define MT9M111_OUTFMT_BYPASS_IFP       (1 << 10)
  97 #define MT9M111_OUTFMT_INV_PIX_CLOCK    (1 << 9)
  98 #define MT9M111_OUTFMT_RGB              (1 << 8)
  99 #define MT9M111_OUTFMT_RGB565           (0x0 << 6)
 100 #define MT9M111_OUTFMT_RGB555           (0x1 << 6)
 101 #define MT9M111_OUTFMT_RGB444x          (0x2 << 6)
 102 #define MT9M111_OUTFMT_RGBx444          (0x3 << 6)
 103 #define MT9M111_OUTFMT_TST_RAMP_OFF     (0x0 << 4)
 104 #define MT9M111_OUTFMT_TST_RAMP_COL     (0x1 << 4)
 105 #define MT9M111_OUTFMT_TST_RAMP_ROW     (0x2 << 4)
 106 #define MT9M111_OUTFMT_TST_RAMP_FRAME   (0x3 << 4)
 107 #define MT9M111_OUTFMT_SHIFT_3_UP       (1 << 3)
 108 #define MT9M111_OUTFMT_AVG_CHROMA       (1 << 2)
 109 #define MT9M111_OUTFMT_SWAP_YCbCr_C_Y   (1 << 1)
 110 #define MT9M111_OUTFMT_SWAP_RGB_EVEN    (1 << 1)
 111 #define MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr (1 << 0)
 112 /*
 113  * mt9m111: Camera control register addresses (0x200..0x2ff not implemented)
 114  */
 115
 116 #define reg_read(reg) mt9m111_reg_read(client, MT9M111_##reg)
 117 #define reg_write(reg, val) mt9m111_reg_write(client, MT9M111_##reg, (val))
 118 #define reg_set(reg, val) mt9m111_reg_set(client, MT9M111_##reg, (val))
 119 #define reg_clear(reg, val) mt9m111_reg_clear(client, MT9M111_##reg, (val))
 120
 121 #define MT9M111_MIN_DARK_ROWS   8
 122 #define MT9M111_MIN_DARK_COLS   24
 123 #define MT9M111_MAX_HEIGHT      1024
 124 #define MT9M111_MAX_WIDTH       1280
 125
 126 #define COL_FMT(_name, _depth, _fourcc, _colorspace) \
 127         { .name = _name, .depth = _depth, .fourcc = _fourcc, \
 128         .colorspace = _colorspace }
 129 #define RGB_FMT(_name, _depth, _fourcc) \
 130         COL_FMT(_name, _depth, _fourcc, V4L2_COLORSPACE_SRGB)
 131 #define JPG_FMT(_name, _depth, _fourcc) \
 132         COL_FMT(_name, _depth, _fourcc, V4L2_COLORSPACE_JPEG)
 133
 134 static const struct soc_camera_data_format mt9m111_colour_formats[] = {
 135         JPG_FMT("CbYCrY 16 bit", 16, V4L2_PIX_FMT_UYVY),
 136         JPG_FMT("CrYCbY 16 bit", 16, V4L2_PIX_FMT_VYUY),
 137         JPG_FMT("YCbYCr 16 bit", 16, V4L2_PIX_FMT_YUYV),
 138         JPG_FMT("YCrYCb 16 bit", 16, V4L2_PIX_FMT_YVYU),
 139         RGB_FMT("RGB 565", 16, V4L2_PIX_FMT_RGB565),
 140         RGB_FMT("RGB 555", 16, V4L2_PIX_FMT_RGB555),
 141         RGB_FMT("Bayer (sRGB) 10 bit", 10, V4L2_PIX_FMT_SBGGR16),
 142         RGB_FMT("Bayer (sRGB) 8 bit", 8, V4L2_PIX_FMT_SBGGR8),
 143 };
 144
 145 enum mt9m111_context {
 146         HIGHPOWER = 0,
 147         LOWPOWER,
 148 };
 149
 150 struct mt9m111 {
 151         struct v4l2_subdev subdev;
 152         int model;      /* V4L2_IDENT_MT9M11x* codes from v4l2-chip-ident.h */
 153         enum mt9m111_context context;
 154         struct v4l2_rect rect;
 155         u32 pixfmt;
 156         unsigned char autoexposure;
 157         unsigned char datawidth;
 158         unsigned int powered:1;
 159         unsigned int hflip:1;
 160         unsigned int vflip:1;
 161         unsigned int swap_rgb_even_odd:1;
 162         unsigned int swap_rgb_red_blue:1;
 163         unsigned int swap_yuv_y_chromas:1;
 164         unsigned int swap_yuv_cb_cr:1;
 165         unsigned int autowhitebalance:1;
 166 };
 167
 168 static struct mt9m111 *to_mt9m111(const struct i2c_client *client)
 169 {
 170         return container_of(i2c_get_clientdata(client), struct mt9m111, subdev);
 171 }
 172
 173 static int reg_page_map_set(struct i2c_client *client, const u16 reg)
 174 {
 175         int ret;
 176         u16 page;
 177         static int lastpage = -1;       /* PageMap cache value */
 178
 179         page = (reg >> 8);
 180         if (page == lastpage)
 181                 return 0;
 182         if (page > 2)
 183                 return -EINVAL;
 184
 185         ret = i2c_smbus_write_word_data(client, MT9M111_PAGE_MAP, swab16(page));
 186         if (!ret)
 187                 lastpage = page;
 188         return ret;
 189 }
 190
 191 static int mt9m111_reg_read(struct i2c_client *client, const u16 reg)
 192 {
 193         int ret;
 194
 195         ret = reg_page_map_set(client, reg);
 196         if (!ret)
 197                 ret = swab16(i2c_smbus_read_word_data(client, reg & 0xff));
 198
 199         dev_dbg(&client->dev, "read  reg.%03x -> %04x\n", reg, ret);
 200         return ret;
 201 }
 202
 203 static int mt9m111_reg_write(struct i2c_client *client, const u16 reg,
 204                              const u16 data)
 205 {
 206         int ret;
 207
 208         ret = reg_page_map_set(client, reg);
 209         if (!ret)
 210                 ret = i2c_smbus_write_word_data(client, reg & 0xff,
 211                                                 swab16(data));
 212         dev_dbg(&client->dev, "write reg.%03x = %04x -> %d\n", reg, data, ret);
 213         return ret;
 214 }
 215
 216 static int mt9m111_reg_set(struct i2c_client *client, const u16 reg,
 217                            const u16 data)
 218 {
 219         int ret;
 220
 221         ret = mt9m111_reg_read(client, reg);
 222         if (ret >= 0)
 223                 ret = mt9m111_reg_write(client, reg, ret | data);
 224         return ret;
 225 }
 226
 227 static int mt9m111_reg_clear(struct i2c_client *client, const u16 reg,
 228                              const u16 data)
 229 {
 230         int ret;
 231
 232         ret = mt9m111_reg_read(client, reg);
 233         return mt9m111_reg_write(client, reg, ret & ~data);
 234 }
 235
 236 static int mt9m111_set_context(struct i2c_client *client,
 237                                enum mt9m111_context ctxt)
 238 {
 239         int valB = MT9M111_CTXT_CTRL_RESTART | MT9M111_CTXT_CTRL_DEFECTCOR_B
 240                 | MT9M111_CTXT_CTRL_RESIZE_B | MT9M111_CTXT_CTRL_CTRL2_B
 241                 | MT9M111_CTXT_CTRL_GAMMA_B | MT9M111_CTXT_CTRL_READ_MODE_B
 242                 | MT9M111_CTXT_CTRL_VBLANK_SEL_B
 243                 | MT9M111_CTXT_CTRL_HBLANK_SEL_B;
 244         int valA = MT9M111_CTXT_CTRL_RESTART;
 245
 246         if (ctxt == HIGHPOWER)
 247                 return reg_write(CONTEXT_CONTROL, valB);
 248         else
 249                 return reg_write(CONTEXT_CONTROL, valA);
 250 }
 251
 252 static int mt9m111_setup_rect(struct i2c_client *client,
 253                               struct v4l2_rect *rect)
 254 {
 255         struct mt9m111 *mt9m111 = to_mt9m111(client);
 256         int ret, is_raw_format;
 257         int width = rect->width;
 258         int height = rect->height;
 259
 260         if (mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR8 ||
 261             mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR16)
 262                 is_raw_format = 1;
 263         else
 264                 is_raw_format = 0;
 265
 266         ret = reg_write(COLUMN_START, rect->left);
 267         if (!ret)
 268                 ret = reg_write(ROW_START, rect->top);
 269
 270         if (is_raw_format) {
 271                 if (!ret)
 272                         ret = reg_write(WINDOW_WIDTH, width);
 273                 if (!ret)
 274                         ret = reg_write(WINDOW_HEIGHT, height);
 275         } else {
 276                 if (!ret)
 277                         ret = reg_write(REDUCER_XZOOM_B, MT9M111_MAX_WIDTH);
 278                 if (!ret)
 279                         ret = reg_write(REDUCER_YZOOM_B, MT9M111_MAX_HEIGHT);
 280                 if (!ret)
 281                         ret = reg_write(REDUCER_XSIZE_B, width);
 282                 if (!ret)
 283                         ret = reg_write(REDUCER_YSIZE_B, height);
 284                 if (!ret)
 285                         ret = reg_write(REDUCER_XZOOM_A, MT9M111_MAX_WIDTH);
 286                 if (!ret)
 287                         ret = reg_write(REDUCER_YZOOM_A, MT9M111_MAX_HEIGHT);
 288                 if (!ret)
 289                         ret = reg_write(REDUCER_XSIZE_A, width);
 290                 if (!ret)
 291                         ret = reg_write(REDUCER_YSIZE_A, height);
 292         }
 293
 294         return ret;
 295 }
 296
 297 static int mt9m111_setup_pixfmt(struct i2c_client *client, u16 outfmt)
 298 {
 299         int ret;
 300
 301         ret = reg_write(OUTPUT_FORMAT_CTRL2_A, outfmt);
 302         if (!ret)
 303                 ret = reg_write(OUTPUT_FORMAT_CTRL2_B, outfmt);
 304         return ret;
 305 }
 306
 307 static int mt9m111_setfmt_bayer8(struct i2c_client *client)
 308 {
 309         return mt9m111_setup_pixfmt(client, MT9M111_OUTFMT_PROCESSED_BAYER);
 310 }
 311
 312 static int mt9m111_setfmt_bayer10(struct i2c_client *client)
 313 {
 314         return mt9m111_setup_pixfmt(client, MT9M111_OUTFMT_BYPASS_IFP);
 315 }
 316
 317 static int mt9m111_setfmt_rgb565(struct i2c_client *client)
 318 {
 319         struct mt9m111 *mt9m111 = to_mt9m111(client);
 320         int val = 0;
 321
 322         if (mt9m111->swap_rgb_red_blue)
 323                 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
 324         if (mt9m111->swap_rgb_even_odd)
 325                 val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
 326         val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565;
 327
 328         return mt9m111_setup_pixfmt(client, val);
 329 }
 330
 331 static int mt9m111_setfmt_rgb555(struct i2c_client *client)
 332 {
 333         struct mt9m111 *mt9m111 = to_mt9m111(client);
 334         int val = 0;
 335
 336         if (mt9m111->swap_rgb_red_blue)
 337                 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
 338         if (mt9m111->swap_rgb_even_odd)
 339                 val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
 340         val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555;
 341
 342         return mt9m111_setup_pixfmt(client, val);
 343 }
 344
 345 static int mt9m111_setfmt_yuv(struct i2c_client *client)
 346 {
 347         struct mt9m111 *mt9m111 = to_mt9m111(client);
 348         int val = 0;
 349
 350         if (mt9m111->swap_yuv_cb_cr)
 351                 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
 352         if (mt9m111->swap_yuv_y_chromas)
 353                 val |= MT9M111_OUTFMT_SWAP_YCbCr_C_Y;
 354
 355         return mt9m111_setup_pixfmt(client, val);
 356 }
 357
 358 static int mt9m111_enable(struct i2c_client *client)
 359 {
 360         struct mt9m111 *mt9m111 = to_mt9m111(client);
 361         int ret;
 362
 363         ret = reg_set(RESET, MT9M111_RESET_CHIP_ENABLE);
 364         if (!ret)
 365                 mt9m111->powered = 1;
 366         return ret;
 367 }
 368
 369 static int mt9m111_reset(struct i2c_client *client)
 370 {
 371         int ret;
 372
 373         ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
 374         if (!ret)
 375                 ret = reg_set(RESET, MT9M111_RESET_RESET_SOC);
 376         if (!ret)
 377                 ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE
 378                                 | MT9M111_RESET_RESET_SOC);
 379
 380         return ret;
 381 }
 382
 383 static unsigned long mt9m111_query_bus_param(struct soc_camera_device *icd)
 384 {
 385         struct soc_camera_link *icl = to_soc_camera_link(icd);
 386         unsigned long flags = SOCAM_MASTER | SOCAM_PCLK_SAMPLE_RISING |
 387                 SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH |
 388                 SOCAM_DATA_ACTIVE_HIGH | SOCAM_DATAWIDTH_8;
 389
 390         return soc_camera_apply_sensor_flags(icl, flags);
 391 }
 392
 393 static int mt9m111_set_bus_param(struct soc_camera_device *icd, unsigned long f)
 394 {
 395         return 0;
 396 }
 397
 398 static int mt9m111_make_rect(struct i2c_client *client,
 399                              struct v4l2_rect *rect)
 400 {
 401         struct mt9m111 *mt9m111 = to_mt9m111(client);
 402
 403         if (mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR8 ||
 404             mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR16) {
 405                 /* Bayer format - even size lengths */
 406                 rect->width     = ALIGN(rect->width, 2);
 407                 rect->height    = ALIGN(rect->height, 2);
 408                 /* Let the user play with the starting pixel */
 409         }
 410
 411         /* FIXME: the datasheet doesn't specify minimum sizes */
 412         soc_camera_limit_side(&rect->left, &rect->width,
 413                      MT9M111_MIN_DARK_COLS, 2, MT9M111_MAX_WIDTH);
 414
 415         soc_camera_limit_side(&rect->top, &rect->height,
 416                      MT9M111_MIN_DARK_ROWS, 2, MT9M111_MAX_HEIGHT);
 417
 418         return mt9m111_setup_rect(client, rect);
 419 }
 420
 421 static int mt9m111_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
 422 {
 423         struct v4l2_rect rect = a->c;
 424         struct i2c_client *client = sd->priv;
 425         struct mt9m111 *mt9m111 = to_mt9m111(client);
 426         int ret;
 427
 428         dev_dbg(&client->dev, "%s left=%d, top=%d, width=%d, height=%d\n",
 429                 __func__, rect.left, rect.top, rect.width, rect.height);
 430
 431         ret = mt9m111_make_rect(client, &rect);
 432         if (!ret)
 433                 mt9m111->rect = rect;
 434         return ret;
 435 }
 436
 437 static int mt9m111_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
 438 {
 439         struct i2c_client *client = sd->priv;
 440         struct mt9m111 *mt9m111 = to_mt9m111(client);
 441
 442         a->c    = mt9m111->rect;
 443         a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 444
 445         return 0;
 446 }
 447
 448 static int mt9m111_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
 449 {
 450         a->bounds.left                  = MT9M111_MIN_DARK_COLS;
 451         a->bounds.top                   = MT9M111_MIN_DARK_ROWS;
 452         a->bounds.width                 = MT9M111_MAX_WIDTH;
 453         a->bounds.height                = MT9M111_MAX_HEIGHT;
 454         a->defrect                      = a->bounds;
 455         a->type                         = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 456         a->pixelaspect.numerator        = 1;
 457         a->pixelaspect.denominator      = 1;
 458
 459         return 0;
 460 }
 461
 462 static int mt9m111_g_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
 463 {
 464         struct i2c_client *client = sd->priv;
 465         struct mt9m111 *mt9m111 = to_mt9m111(client);
 466         struct v4l2_pix_format *pix = &f->fmt.pix;
 467
 468         pix->width              = mt9m111->rect.width;
 469         pix->height             = mt9m111->rect.height;
 470         pix->pixelformat        = mt9m111->pixfmt;
 471         pix->field              = V4L2_FIELD_NONE;
 472         pix->colorspace         = V4L2_COLORSPACE_SRGB;
 473
 474         return 0;
 475 }
 476
 477 static int mt9m111_set_pixfmt(struct i2c_client *client, u32 pixfmt)
 478 {
 479         struct mt9m111 *mt9m111 = to_mt9m111(client);
 480         int ret;
 481
 482         switch (pixfmt) {
 483         case V4L2_PIX_FMT_SBGGR8:
 484                 ret = mt9m111_setfmt_bayer8(client);
 485                 break;
 486         case V4L2_PIX_FMT_SBGGR16:
 487                 ret = mt9m111_setfmt_bayer10(client);
 488                 break;
 489         case V4L2_PIX_FMT_RGB555:
 490                 ret = mt9m111_setfmt_rgb555(client);
 491                 break;
 492         case V4L2_PIX_FMT_RGB565:
 493                 ret = mt9m111_setfmt_rgb565(client);
 494                 break;
 495         case V4L2_PIX_FMT_UYVY:
 496                 mt9m111->swap_yuv_y_chromas = 0;
 497                 mt9m111->swap_yuv_cb_cr = 0;
 498                 ret = mt9m111_setfmt_yuv(client);
 499                 break;
 500         case V4L2_PIX_FMT_VYUY:
 501                 mt9m111->swap_yuv_y_chromas = 0;
 502                 mt9m111->swap_yuv_cb_cr = 1;
 503                 ret = mt9m111_setfmt_yuv(client);
 504                 break;
 505         case V4L2_PIX_FMT_YUYV:
 506                 mt9m111->swap_yuv_y_chromas = 1;
 507                 mt9m111->swap_yuv_cb_cr = 0;
 508                 ret = mt9m111_setfmt_yuv(client);
 509                 break;
 510         case V4L2_PIX_FMT_YVYU:
 511                 mt9m111->swap_yuv_y_chromas = 1;
 512                 mt9m111->swap_yuv_cb_cr = 1;
 513                 ret = mt9m111_setfmt_yuv(client);
 514                 break;
 515         default:
 516                 dev_err(&client->dev, "Pixel format not handled : %x\n", pixfmt);
 517                 ret = -EINVAL;
 518         }
 519
 520         if (!ret)
 521                 mt9m111->pixfmt = pixfmt;
 522
 523         return ret;
 524 }
 525
 526 static int mt9m111_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
 527 {
 528         struct i2c_client *client = sd->priv;
 529         struct mt9m111 *mt9m111 = to_mt9m111(client);
 530         struct v4l2_pix_format *pix = &f->fmt.pix;
 531         struct v4l2_rect rect = {
 532                 .left   = mt9m111->rect.left,
 533                 .top    = mt9m111->rect.top,
 534                 .width  = pix->width,
 535                 .height = pix->height,
 536         };
 537         int ret;
 538
 539         dev_dbg(&client->dev, "%s fmt=%x left=%d, top=%d, width=%d, height=%d\n",
 540                 __func__, pix->pixelformat, rect.left, rect.top, rect.width,
 541                 rect.height);
 542
 543         ret = mt9m111_make_rect(client, &rect);
 544         if (!ret)
 545                 ret = mt9m111_set_pixfmt(client, pix->pixelformat);
 546         if (!ret)
 547                 mt9m111->rect = rect;
 548         return ret;
 549 }
 550
 551 static int mt9m111_try_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
 552 {
 553         struct v4l2_pix_format *pix = &f->fmt.pix;
 554         bool bayer = pix->pixelformat == V4L2_PIX_FMT_SBGGR8 ||
 555                 pix->pixelformat == V4L2_PIX_FMT_SBGGR16;
 556
 557         /*
 558          * With Bayer format enforce even side lengths, but let the user play
 559          * with the starting pixel
 560          */
 561
 562         if (pix->height > MT9M111_MAX_HEIGHT)
 563                 pix->height = MT9M111_MAX_HEIGHT;
 564         else if (pix->height < 2)
 565                 pix->height = 2;
 566         else if (bayer)
 567                 pix->height = ALIGN(pix->height, 2);
 568
 569         if (pix->width > MT9M111_MAX_WIDTH)
 570                 pix->width = MT9M111_MAX_WIDTH;
 571         else if (pix->width < 2)
 572                 pix->width = 2;
 573         else if (bayer)
 574                 pix->width = ALIGN(pix->width, 2);
 575
 576         return 0;
 577 }
 578
 579 static int mt9m111_g_chip_ident(struct v4l2_subdev *sd,
 580                                 struct v4l2_dbg_chip_ident *id)
 581 {
 582         struct i2c_client *client = sd->priv;
 583         struct mt9m111 *mt9m111 = to_mt9m111(client);
 584
 585         if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
 586                 return -EINVAL;
 587
 588         if (id->match.addr != client->addr)
 589                 return -ENODEV;
 590
 591         id->ident       = mt9m111->model;
 592         id->revision    = 0;
 593
 594         return 0;
 595 }
 596
 597 #ifdef CONFIG_VIDEO_ADV_DEBUG
 598 static int mt9m111_g_register(struct v4l2_subdev *sd,
 599                               struct v4l2_dbg_register *reg)
 600 {
 601         struct i2c_client *client = sd->priv;
 602         int val;
 603
 604         if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
 605                 return -EINVAL;
 606         if (reg->match.addr != client->addr)
 607                 return -ENODEV;
 608
 609         val = mt9m111_reg_read(client, reg->reg);
 610         reg->size = 2;
 611         reg->val = (u64)val;
 612
 613         if (reg->val > 0xffff)
 614                 return -EIO;
 615
 616         return 0;
 617 }
 618
 619 static int mt9m111_s_register(struct v4l2_subdev *sd,
 620                               struct v4l2_dbg_register *reg)
 621 {
 622         struct i2c_client *client = sd->priv;
 623
 624         if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
 625                 return -EINVAL;
 626
 627         if (reg->match.addr != client->addr)
 628                 return -ENODEV;
 629
 630         if (mt9m111_reg_write(client, reg->reg, reg->val) < 0)
 631                 return -EIO;
 632
 633         return 0;
 634 }
 635 #endif
 636
 637 static const struct v4l2_queryctrl mt9m111_controls[] = {
 638         {
 639                 .id             = V4L2_CID_VFLIP,
 640                 .type           = V4L2_CTRL_TYPE_BOOLEAN,
 641                 .name           = "Flip Verticaly",
 642                 .minimum        = 0,
 643                 .maximum        = 1,
 644                 .step           = 1,
 645                 .default_value  = 0,
 646         }, {
 647                 .id             = V4L2_CID_HFLIP,
 648                 .type           = V4L2_CTRL_TYPE_BOOLEAN,
 649                 .name           = "Flip Horizontaly",
 650                 .minimum        = 0,
 651                 .maximum        = 1,
 652                 .step           = 1,
 653                 .default_value  = 0,
 654         }, {    /* gain = 1/32*val (=>gain=1 if val==32) */
 655                 .id             = V4L2_CID_GAIN,
 656                 .type           = V4L2_CTRL_TYPE_INTEGER,
 657                 .name           = "Gain",
 658                 .minimum        = 0,
 659                 .maximum        = 63 * 2 * 2,
 660                 .step           = 1,
 661                 .default_value  = 32,
 662                 .flags          = V4L2_CTRL_FLAG_SLIDER,
 663         }, {
 664                 .id             = V4L2_CID_EXPOSURE_AUTO,
 665                 .type           = V4L2_CTRL_TYPE_BOOLEAN,
 666                 .name           = "Auto Exposure",
 667                 .minimum        = 0,
 668                 .maximum        = 1,
 669                 .step           = 1,
 670                 .default_value  = 1,
 671         }
 672 };
 673
 674 static int mt9m111_resume(struct soc_camera_device *icd);
 675
 676 static struct soc_camera_ops mt9m111_ops = {
 677         .resume                 = mt9m111_resume,
 678         .query_bus_param        = mt9m111_query_bus_param,
 679         .set_bus_param          = mt9m111_set_bus_param,
 680         .controls               = mt9m111_controls,
 681         .num_controls           = ARRAY_SIZE(mt9m111_controls),
 682 };
 683
 684 static int mt9m111_set_flip(struct i2c_client *client, int flip, int mask)
 685 {
 686         struct mt9m111 *mt9m111 = to_mt9m111(client);
 687         int ret;
 688
 689         if (mt9m111->context == HIGHPOWER) {
 690                 if (flip)
 691                         ret = reg_set(READ_MODE_B, mask);
 692                 else
 693                         ret = reg_clear(READ_MODE_B, mask);
 694         } else {
 695                 if (flip)
 696                         ret = reg_set(READ_MODE_A, mask);
 697                 else
 698                         ret = reg_clear(READ_MODE_A, mask);
 699         }
 700
 701         return ret;
 702 }
 703
 704 static int mt9m111_get_global_gain(struct i2c_client *client)
 705 {
 706         int data;
 707
 708         data = reg_read(GLOBAL_GAIN);
 709         if (data >= 0)
 710                 return (data & 0x2f) * (1 << ((data >> 10) & 1)) *
 711                         (1 << ((data >> 9) & 1));
 712         return data;
 713 }
 714
 715 static int mt9m111_set_global_gain(struct i2c_client *client, int gain)
 716 {
 717         struct soc_camera_device *icd = client->dev.platform_data;
 718         u16 val;
 719
 720         if (gain > 63 * 2 * 2)
 721                 return -EINVAL;
 722
 723         icd->gain = gain;
 724         if ((gain >= 64 * 2) && (gain < 63 * 2 * 2))
 725                 val = (1 << 10) | (1 << 9) | (gain / 4);
 726         else if ((gain >= 64) && (gain < 64 * 2))
 727                 val = (1 << 9) | (gain / 2);
 728         else
 729                 val = gain;
 730
 731         return reg_write(GLOBAL_GAIN, val);
 732 }
 733
 734 static int mt9m111_set_autoexposure(struct i2c_client *client, int on)
 735 {
 736         struct mt9m111 *mt9m111 = to_mt9m111(client);
 737         int ret;
 738
 739         if (on)
 740                 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
 741         else
 742                 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
 743
 744         if (!ret)
 745                 mt9m111->autoexposure = on;
 746
 747         return ret;
 748 }
 749
 750 static int mt9m111_set_autowhitebalance(struct i2c_client *client, int on)
 751 {
 752         struct mt9m111 *mt9m111 = to_mt9m111(client);
 753         int ret;
 754
 755         if (on)
 756                 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
 757         else
 758                 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
 759
 760         if (!ret)
 761                 mt9m111->autowhitebalance = on;
 762
 763         return ret;
 764 }
 765
 766 static int mt9m111_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
 767 {
 768         struct i2c_client *client = sd->priv;
 769         struct mt9m111 *mt9m111 = to_mt9m111(client);
 770         int data;
 771
 772         switch (ctrl->id) {
 773         case V4L2_CID_VFLIP:
 774                 if (mt9m111->context == HIGHPOWER)
 775                         data = reg_read(READ_MODE_B);
 776                 else
 777                         data = reg_read(READ_MODE_A);
 778
 779                 if (data < 0)
 780                         return -EIO;
 781                 ctrl->value = !!(data & MT9M111_RMB_MIRROR_ROWS);
 782                 break;
 783         case V4L2_CID_HFLIP:
 784                 if (mt9m111->context == HIGHPOWER)
 785                         data = reg_read(READ_MODE_B);
 786                 else
 787                         data = reg_read(READ_MODE_A);
 788
 789                 if (data < 0)
 790                         return -EIO;
 791                 ctrl->value = !!(data & MT9M111_RMB_MIRROR_COLS);
 792                 break;
 793         case V4L2_CID_GAIN:
 794                 data = mt9m111_get_global_gain(client);
 795                 if (data < 0)
 796                         return data;
 797                 ctrl->value = data;
 798                 break;
 799         case V4L2_CID_EXPOSURE_AUTO:
 800                 ctrl->value = mt9m111->autoexposure;
 801                 break;
 802         case V4L2_CID_AUTO_WHITE_BALANCE:
 803                 ctrl->value = mt9m111->autowhitebalance;
 804                 break;
 805         }
 806         return 0;
 807 }
 808
 809 static int mt9m111_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
 810 {
 811         struct i2c_client *client = sd->priv;
 812         struct mt9m111 *mt9m111 = to_mt9m111(client);
 813         const struct v4l2_queryctrl *qctrl;
 814         int ret;
 815
 816         qctrl = soc_camera_find_qctrl(&mt9m111_ops, ctrl->id);
 817         if (!qctrl)
 818                 return -EINVAL;
 819
 820         switch (ctrl->id) {
 821         case V4L2_CID_VFLIP:
 822                 mt9m111->vflip = ctrl->value;
 823                 ret = mt9m111_set_flip(client, ctrl->value,
 824                                         MT9M111_RMB_MIRROR_ROWS);
 825                 break;
 826         case V4L2_CID_HFLIP:
 827                 mt9m111->hflip = ctrl->value;
 828                 ret = mt9m111_set_flip(client, ctrl->value,
 829                                         MT9M111_RMB_MIRROR_COLS);
 830                 break;
 831         case V4L2_CID_GAIN:
 832                 ret = mt9m111_set_global_gain(client, ctrl->value);
 833                 break;
 834         case V4L2_CID_EXPOSURE_AUTO:
 835                 ret =  mt9m111_set_autoexposure(client, ctrl->value);
 836                 break;
 837         case V4L2_CID_AUTO_WHITE_BALANCE:
 838                 ret =  mt9m111_set_autowhitebalance(client, ctrl->value);
 839                 break;
 840         default:
 841                 ret = -EINVAL;
 842         }
 843
 844         return ret;
 845 }
 846
 847 static int mt9m111_restore_state(struct i2c_client *client)
 848 {
 849         struct mt9m111 *mt9m111 = to_mt9m111(client);
 850         struct soc_camera_device *icd = client->dev.platform_data;
 851
 852         mt9m111_set_context(client, mt9m111->context);
 853         mt9m111_set_pixfmt(client, mt9m111->pixfmt);
 854         mt9m111_setup_rect(client, &mt9m111->rect);
 855         mt9m111_set_flip(client, mt9m111->hflip, MT9M111_RMB_MIRROR_COLS);
 856         mt9m111_set_flip(client, mt9m111->vflip, MT9M111_RMB_MIRROR_ROWS);
 857         mt9m111_set_global_gain(client, icd->gain);
 858         mt9m111_set_autoexposure(client, mt9m111->autoexposure);
 859         mt9m111_set_autowhitebalance(client, mt9m111->autowhitebalance);
 860         return 0;
 861 }
 862
 863 static int mt9m111_resume(struct soc_camera_device *icd)
 864 {
 865         struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 866         struct mt9m111 *mt9m111 = to_mt9m111(client);
 867         int ret = 0;
 868
 869         if (mt9m111->powered) {
 870                 ret = mt9m111_enable(client);
 871                 if (!ret)
 872                         ret = mt9m111_reset(client);
 873                 if (!ret)
 874                         ret = mt9m111_restore_state(client);
 875         }
 876         return ret;
 877 }
 878
 879 static int mt9m111_init(struct i2c_client *client)
 880 {
 881         struct mt9m111 *mt9m111 = to_mt9m111(client);
 882         int ret;
 883
 884         mt9m111->context = HIGHPOWER;
 885         ret = mt9m111_enable(client);
 886         if (!ret)
 887                 ret = mt9m111_reset(client);
 888         if (!ret)
 889                 ret = mt9m111_set_context(client, mt9m111->context);
 890         if (!ret)
 891                 ret = mt9m111_set_autoexposure(client, mt9m111->autoexposure);
 892         if (ret)
 893                 dev_err(&client->dev, "mt9m11x init failed: %d\n", ret);
 894         return ret;
 895 }
 896
 897 /*
 898  * Interface active, can use i2c. If it fails, it can indeed mean, that
 899  * this wasn't our capture interface, so, we wait for the right one
 900  */
 901 static int mt9m111_video_probe(struct soc_camera_device *icd,
 902                                struct i2c_client *client)
 903 {
 904         struct mt9m111 *mt9m111 = to_mt9m111(client);
 905         s32 data;
 906         int ret;
 907
 908         /*
 909          * We must have a parent by now. And it cannot be a wrong one.
 910          * So this entire test is completely redundant.
 911          */
 912         if (!icd->dev.parent ||
 913             to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
 914                 return -ENODEV;
 915
 916         mt9m111->autoexposure = 1;
 917         mt9m111->autowhitebalance = 1;
 918
 919         mt9m111->swap_rgb_even_odd = 1;
 920         mt9m111->swap_rgb_red_blue = 1;
 921
 922         ret = mt9m111_init(client);
 923         if (ret)
 924                 goto ei2c;
 925
 926         data = reg_read(CHIP_VERSION);
 927
 928         switch (data) {
 929         case 0x143a: /* MT9M111 */
 930                 mt9m111->model = V4L2_IDENT_MT9M111;
 931                 break;
 932         case 0x148c: /* MT9M112 */
 933                 mt9m111->model = V4L2_IDENT_MT9M112;
 934                 break;
 935         default:
 936                 ret = -ENODEV;
 937                 dev_err(&client->dev,
 938                         "No MT9M11x chip detected, register read %x\n", data);
 939                 goto ei2c;
 940         }
 941
 942         icd->formats = mt9m111_colour_formats;
 943         icd->num_formats = ARRAY_SIZE(mt9m111_colour_formats);
 944
 945         dev_info(&client->dev, "Detected a MT9M11x chip ID %x\n", data);
 946
 947 ei2c:
 948         return ret;
 949 }
 950
 951 static struct v4l2_subdev_core_ops mt9m111_subdev_core_ops = {
 952         .g_ctrl         = mt9m111_g_ctrl,
 953         .s_ctrl         = mt9m111_s_ctrl,
 954         .g_chip_ident   = mt9m111_g_chip_ident,
 955 #ifdef CONFIG_VIDEO_ADV_DEBUG
 956         .g_register     = mt9m111_g_register,
 957         .s_register     = mt9m111_s_register,
 958 #endif
 959 };
 960
 961 static struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = {
 962         .s_fmt          = mt9m111_s_fmt,
 963         .g_fmt          = mt9m111_g_fmt,
 964         .try_fmt        = mt9m111_try_fmt,
 965         .s_crop         = mt9m111_s_crop,
 966         .g_crop         = mt9m111_g_crop,
 967         .cropcap        = mt9m111_cropcap,
 968 };
 969
 970 static struct v4l2_subdev_ops mt9m111_subdev_ops = {
 971         .core   = &mt9m111_subdev_core_ops,
 972         .video  = &mt9m111_subdev_video_ops,
 973 };
 974
 975 static int mt9m111_probe(struct i2c_client *client,
 976                          const struct i2c_device_id *did)
 977 {
 978         struct mt9m111 *mt9m111;
 979         struct soc_camera_device *icd = client->dev.platform_data;
 980         struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
 981         struct soc_camera_link *icl;
 982         int ret;
 983
 984         if (!icd) {
 985                 dev_err(&client->dev, "MT9M11x: missing soc-camera data!\n");
 986                 return -EINVAL;
 987         }
 988
 989         icl = to_soc_camera_link(icd);
 990         if (!icl) {
 991                 dev_err(&client->dev, "MT9M11x driver needs platform data\n");
 992                 return -EINVAL;
 993         }
 994
 995         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
 996                 dev_warn(&adapter->dev,
 997                          "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
 998                 return -EIO;
 999         }
1000
1001         mt9m111 = kzalloc(sizeof(struct mt9m111), GFP_KERNEL);
1002         if (!mt9m111)
1003                 return -ENOMEM;
1004
1005         v4l2_i2c_subdev_init(&mt9m111->subdev, client, &mt9m111_subdev_ops);
1006
1007         /* Second stage probe - when a capture adapter is there */
1008         icd->ops                = &mt9m111_ops;
1009         icd->y_skip_top         = 0;
1010
1011         mt9m111->rect.left      = MT9M111_MIN_DARK_COLS;
1012         mt9m111->rect.top       = MT9M111_MIN_DARK_ROWS;
1013         mt9m111->rect.width     = MT9M111_MAX_WIDTH;
1014         mt9m111->rect.height    = MT9M111_MAX_HEIGHT;
1015
1016         ret = mt9m111_video_probe(icd, client);
1017         if (ret) {
1018                 icd->ops = NULL;
1019                 i2c_set_clientdata(client, NULL);
1020                 kfree(mt9m111);
1021         }
1022
1023         return ret;
1024 }
1025
1026 static int mt9m111_remove(struct i2c_client *client)
1027 {
1028         struct mt9m111 *mt9m111 = to_mt9m111(client);
1029         struct soc_camera_device *icd = client->dev.platform_data;
1030
1031         icd->ops = NULL;
1032         i2c_set_clientdata(client, NULL);
1033         client->driver = NULL;
1034         kfree(mt9m111);
1035
1036         return 0;
1037 }
1038
1039 static const struct i2c_device_id mt9m111_id[] = {
1040         { "mt9m111", 0 },
1041         { }
1042 };
1043 MODULE_DEVICE_TABLE(i2c, mt9m111_id);
1044
1045 static struct i2c_driver mt9m111_i2c_driver = {
1046         .driver = {
1047                 .name = "mt9m111",
1048         },
1049         .probe          = mt9m111_probe,
1050         .remove         = mt9m111_remove,
1051         .id_table       = mt9m111_id,
1052 };
1053
1054 static int __init mt9m111_mod_init(void)
1055 {
1056         return i2c_add_driver(&mt9m111_i2c_driver);
1057 }
1058
1059 static void __exit mt9m111_mod_exit(void)
1060 {
1061         i2c_del_driver(&mt9m111_i2c_driver);
1062 }
1063
1064 module_init(mt9m111_mod_init);
1065 module_exit(mt9m111_mod_exit);
1066
1067 MODULE_DESCRIPTION("Micron MT9M111/MT9M112 Camera driver");
1068 MODULE_AUTHOR("Robert Jarzmik");
1069 MODULE_LICENSE("GPL");