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(icd, MT9M111_##reg)
 117 #define reg_write(reg, val) mt9m111_reg_write(icd, MT9M111_##reg, (val))
 118 #define reg_set(reg, val) mt9m111_reg_set(icd, MT9M111_##reg, (val))
 119 #define reg_clear(reg, val) mt9m111_reg_clear(icd, 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 i2c_client *client;
 152         struct soc_camera_device icd;
 153         int model;      /* V4L2_IDENT_MT9M11x* codes from v4l2-chip-ident.h */
 154         enum mt9m111_context context;
 155         struct v4l2_rect rect;
 156         u32 pixfmt;
 157         unsigned char autoexposure;
 158         unsigned char datawidth;
 159         unsigned int powered:1;
 160         unsigned int hflip:1;
 161         unsigned int vflip:1;
 162         unsigned int swap_rgb_even_odd:1;
 163         unsigned int swap_rgb_red_blue:1;
 164         unsigned int swap_yuv_y_chromas:1;
 165         unsigned int swap_yuv_cb_cr:1;
 166         unsigned int autowhitebalance:1;
 167 };
 168
 169 static int reg_page_map_set(struct i2c_client *client, const u16 reg)
 170 {
 171         int ret;
 172         u16 page;
 173         static int lastpage = -1;       /* PageMap cache value */
 174
 175         page = (reg >> 8);
 176         if (page == lastpage)
 177                 return 0;
 178         if (page > 2)
 179                 return -EINVAL;
 180
 181         ret = i2c_smbus_write_word_data(client, MT9M111_PAGE_MAP, swab16(page));
 182         if (!ret)
 183                 lastpage = page;
 184         return ret;
 185 }
 186
 187 static int mt9m111_reg_read(struct soc_camera_device *icd, const u16 reg)
 188 {
 189         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 190         struct i2c_client *client = mt9m111->client;
 191         int ret;
 192
 193         ret = reg_page_map_set(client, reg);
 194         if (!ret)
 195                 ret = swab16(i2c_smbus_read_word_data(client, (reg & 0xff)));
 196
 197         dev_dbg(&icd->dev, "read  reg.%03x -> %04x\n", reg, ret);
 198         return ret;
 199 }
 200
 201 static int mt9m111_reg_write(struct soc_camera_device *icd, const u16 reg,
 202                              const u16 data)
 203 {
 204         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 205         struct i2c_client *client = mt9m111->client;
 206         int ret;
 207
 208         ret = reg_page_map_set(client, reg);
 209         if (!ret)
 210                 ret = i2c_smbus_write_word_data(mt9m111->client, (reg & 0xff),
 211                                                 swab16(data));
 212         dev_dbg(&icd->dev, "write reg.%03x = %04x -> %d\n", reg, data, ret);
 213         return ret;
 214 }
 215
 216 static int mt9m111_reg_set(struct soc_camera_device *icd, const u16 reg,
 217                            const u16 data)
 218 {
 219         int ret;
 220
 221         ret = mt9m111_reg_read(icd, reg);
 222         if (ret >= 0)
 223                 ret = mt9m111_reg_write(icd, reg, ret | data);
 224         return ret;
 225 }
 226
 227 static int mt9m111_reg_clear(struct soc_camera_device *icd, const u16 reg,
 228                              const u16 data)
 229 {
 230         int ret;
 231
 232         ret = mt9m111_reg_read(icd, reg);
 233         return mt9m111_reg_write(icd, reg, ret & ~data);
 234 }
 235
 236 static int mt9m111_set_context(struct soc_camera_device *icd,
 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 soc_camera_device *icd,
 253                               struct v4l2_rect *rect)
 254 {
 255         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 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 soc_camera_device *icd, 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 soc_camera_device *icd)
 308 {
 309         return mt9m111_setup_pixfmt(icd, MT9M111_OUTFMT_PROCESSED_BAYER);
 310 }
 311
 312 static int mt9m111_setfmt_bayer10(struct soc_camera_device *icd)
 313 {
 314         return mt9m111_setup_pixfmt(icd, MT9M111_OUTFMT_BYPASS_IFP);
 315 }
 316
 317 static int mt9m111_setfmt_rgb565(struct soc_camera_device *icd)
 318 {
 319         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 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(icd, val);
 329 }
 330
 331 static int mt9m111_setfmt_rgb555(struct soc_camera_device *icd)
 332 {
 333         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 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(icd, val);
 343 }
 344
 345 static int mt9m111_setfmt_yuv(struct soc_camera_device *icd)
 346 {
 347         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 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(icd, val);
 356 }
 357
 358 static int mt9m111_enable(struct soc_camera_device *icd)
 359 {
 360         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 361         struct soc_camera_link *icl = mt9m111->client->dev.platform_data;
 362         int ret;
 363
 364         if (icl->power) {
 365                 ret = icl->power(&mt9m111->client->dev, 1);
 366                 if (ret < 0) {
 367                         dev_err(icd->vdev->parent,
 368                                 "Platform failed to power-on the camera.\n");
 369                         return ret;
 370                 }
 371         }
 372
 373         ret = reg_set(RESET, MT9M111_RESET_CHIP_ENABLE);
 374         if (!ret)
 375                 mt9m111->powered = 1;
 376         return ret;
 377 }
 378
 379 static int mt9m111_disable(struct soc_camera_device *icd)
 380 {
 381         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 382         struct soc_camera_link *icl = mt9m111->client->dev.platform_data;
 383         int ret;
 384
 385         ret = reg_clear(RESET, MT9M111_RESET_CHIP_ENABLE);
 386         if (!ret)
 387                 mt9m111->powered = 0;
 388
 389         if (icl->power)
 390                 icl->power(&mt9m111->client->dev, 0);
 391
 392         return ret;
 393 }
 394
 395 static int mt9m111_reset(struct soc_camera_device *icd)
 396 {
 397         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 398         struct soc_camera_link *icl = mt9m111->client->dev.platform_data;
 399         int ret;
 400
 401         ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
 402         if (!ret)
 403                 ret = reg_set(RESET, MT9M111_RESET_RESET_SOC);
 404         if (!ret)
 405                 ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE
 406                                 | MT9M111_RESET_RESET_SOC);
 407
 408         if (icl->reset)
 409                 icl->reset(&mt9m111->client->dev);
 410
 411         return ret;
 412 }
 413
 414 static int mt9m111_start_capture(struct soc_camera_device *icd)
 415 {
 416         return 0;
 417 }
 418
 419 static int mt9m111_stop_capture(struct soc_camera_device *icd)
 420 {
 421         return 0;
 422 }
 423
 424 static unsigned long mt9m111_query_bus_param(struct soc_camera_device *icd)
 425 {
 426         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 427         struct soc_camera_link *icl = mt9m111->client->dev.platform_data;
 428         unsigned long flags = SOCAM_MASTER | SOCAM_PCLK_SAMPLE_RISING |
 429                 SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH |
 430                 SOCAM_DATA_ACTIVE_HIGH | SOCAM_DATAWIDTH_8;
 431
 432         return soc_camera_apply_sensor_flags(icl, flags);
 433 }
 434
 435 static int mt9m111_set_bus_param(struct soc_camera_device *icd, unsigned long f)
 436 {
 437         return 0;
 438 }
 439
 440 static int mt9m111_set_crop(struct soc_camera_device *icd,
 441                             struct v4l2_rect *rect)
 442 {
 443         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 444         int ret;
 445
 446         dev_dbg(&icd->dev, "%s left=%d, top=%d, width=%d, height=%d\n",
 447                 __func__, rect->left, rect->top, rect->width,
 448                 rect->height);
 449
 450         ret = mt9m111_setup_rect(icd, rect);
 451         if (!ret)
 452                 mt9m111->rect = *rect;
 453         return ret;
 454 }
 455
 456 static int mt9m111_set_pixfmt(struct soc_camera_device *icd, u32 pixfmt)
 457 {
 458         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 459         int ret;
 460
 461         switch (pixfmt) {
 462         case V4L2_PIX_FMT_SBGGR8:
 463                 ret = mt9m111_setfmt_bayer8(icd);
 464                 break;
 465         case V4L2_PIX_FMT_SBGGR16:
 466                 ret = mt9m111_setfmt_bayer10(icd);
 467                 break;
 468         case V4L2_PIX_FMT_RGB555:
 469                 ret = mt9m111_setfmt_rgb555(icd);
 470                 break;
 471         case V4L2_PIX_FMT_RGB565:
 472                 ret = mt9m111_setfmt_rgb565(icd);
 473                 break;
 474         case V4L2_PIX_FMT_UYVY:
 475                 mt9m111->swap_yuv_y_chromas = 0;
 476                 mt9m111->swap_yuv_cb_cr = 0;
 477                 ret = mt9m111_setfmt_yuv(icd);
 478                 break;
 479         case V4L2_PIX_FMT_VYUY:
 480                 mt9m111->swap_yuv_y_chromas = 0;
 481                 mt9m111->swap_yuv_cb_cr = 1;
 482                 ret = mt9m111_setfmt_yuv(icd);
 483                 break;
 484         case V4L2_PIX_FMT_YUYV:
 485                 mt9m111->swap_yuv_y_chromas = 1;
 486                 mt9m111->swap_yuv_cb_cr = 0;
 487                 ret = mt9m111_setfmt_yuv(icd);
 488                 break;
 489         case V4L2_PIX_FMT_YVYU:
 490                 mt9m111->swap_yuv_y_chromas = 1;
 491                 mt9m111->swap_yuv_cb_cr = 1;
 492                 ret = mt9m111_setfmt_yuv(icd);
 493                 break;
 494         default:
 495                 dev_err(&icd->dev, "Pixel format not handled : %x\n", pixfmt);
 496                 ret = -EINVAL;
 497         }
 498
 499         if (!ret)
 500                 mt9m111->pixfmt = pixfmt;
 501
 502         return ret;
 503 }
 504
 505 static int mt9m111_set_fmt(struct soc_camera_device *icd,
 506                            struct v4l2_format *f)
 507 {
 508         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 509         struct v4l2_pix_format *pix = &f->fmt.pix;
 510         struct v4l2_rect rect = {
 511                 .left   = mt9m111->rect.left,
 512                 .top    = mt9m111->rect.top,
 513                 .width  = pix->width,
 514                 .height = pix->height,
 515         };
 516         int ret;
 517
 518         dev_dbg(&icd->dev, "%s fmt=%x left=%d, top=%d, width=%d, height=%d\n",
 519                 __func__, pix->pixelformat, rect.left, rect.top, rect.width,
 520                 rect.height);
 521
 522         ret = mt9m111_setup_rect(icd, &rect);
 523         if (!ret)
 524                 ret = mt9m111_set_pixfmt(icd, pix->pixelformat);
 525         if (!ret)
 526                 mt9m111->rect = rect;
 527         return ret;
 528 }
 529
 530 static int mt9m111_try_fmt(struct soc_camera_device *icd,
 531                            struct v4l2_format *f)
 532 {
 533         struct v4l2_pix_format *pix = &f->fmt.pix;
 534
 535         if (pix->height > MT9M111_MAX_HEIGHT)
 536                 pix->height = MT9M111_MAX_HEIGHT;
 537         if (pix->width > MT9M111_MAX_WIDTH)
 538                 pix->width = MT9M111_MAX_WIDTH;
 539
 540         return 0;
 541 }
 542
 543 static int mt9m111_get_chip_id(struct soc_camera_device *icd,
 544                                struct v4l2_dbg_chip_ident *id)
 545 {
 546         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 547
 548         if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
 549                 return -EINVAL;
 550
 551         if (id->match.addr != mt9m111->client->addr)
 552                 return -ENODEV;
 553
 554         id->ident       = mt9m111->model;
 555         id->revision    = 0;
 556
 557         return 0;
 558 }
 559
 560 #ifdef CONFIG_VIDEO_ADV_DEBUG
 561 static int mt9m111_get_register(struct soc_camera_device *icd,
 562                                 struct v4l2_dbg_register *reg)
 563 {
 564         int val;
 565
 566         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 567
 568         if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
 569                 return -EINVAL;
 570         if (reg->match.addr != mt9m111->client->addr)
 571                 return -ENODEV;
 572
 573         val = mt9m111_reg_read(icd, reg->reg);
 574         reg->size = 2;
 575         reg->val = (u64)val;
 576
 577         if (reg->val > 0xffff)
 578                 return -EIO;
 579
 580         return 0;
 581 }
 582
 583 static int mt9m111_set_register(struct soc_camera_device *icd,
 584                                 struct v4l2_dbg_register *reg)
 585 {
 586         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 587
 588         if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
 589                 return -EINVAL;
 590
 591         if (reg->match.addr != mt9m111->client->addr)
 592                 return -ENODEV;
 593
 594         if (mt9m111_reg_write(icd, reg->reg, reg->val) < 0)
 595                 return -EIO;
 596
 597         return 0;
 598 }
 599 #endif
 600
 601 static const struct v4l2_queryctrl mt9m111_controls[] = {
 602         {
 603                 .id             = V4L2_CID_VFLIP,
 604                 .type           = V4L2_CTRL_TYPE_BOOLEAN,
 605                 .name           = "Flip Verticaly",
 606                 .minimum        = 0,
 607                 .maximum        = 1,
 608                 .step           = 1,
 609                 .default_value  = 0,
 610         }, {
 611                 .id             = V4L2_CID_HFLIP,
 612                 .type           = V4L2_CTRL_TYPE_BOOLEAN,
 613                 .name           = "Flip Horizontaly",
 614                 .minimum        = 0,
 615                 .maximum        = 1,
 616                 .step           = 1,
 617                 .default_value  = 0,
 618         }, {    /* gain = 1/32*val (=>gain=1 if val==32) */
 619                 .id             = V4L2_CID_GAIN,
 620                 .type           = V4L2_CTRL_TYPE_INTEGER,
 621                 .name           = "Gain",
 622                 .minimum        = 0,
 623                 .maximum        = 63 * 2 * 2,
 624                 .step           = 1,
 625                 .default_value  = 32,
 626                 .flags          = V4L2_CTRL_FLAG_SLIDER,
 627         }, {
 628                 .id             = V4L2_CID_EXPOSURE_AUTO,
 629                 .type           = V4L2_CTRL_TYPE_BOOLEAN,
 630                 .name           = "Auto Exposure",
 631                 .minimum        = 0,
 632                 .maximum        = 1,
 633                 .step           = 1,
 634                 .default_value  = 1,
 635         }
 636 };
 637
 638 static int mt9m111_video_probe(struct soc_camera_device *);
 639 static void mt9m111_video_remove(struct soc_camera_device *);
 640 static int mt9m111_get_control(struct soc_camera_device *,
 641                                struct v4l2_control *);
 642 static int mt9m111_set_control(struct soc_camera_device *,
 643                                struct v4l2_control *);
 644 static int mt9m111_resume(struct soc_camera_device *icd);
 645 static int mt9m111_init(struct soc_camera_device *icd);
 646 static int mt9m111_release(struct soc_camera_device *icd);
 647
 648 static struct soc_camera_ops mt9m111_ops = {
 649         .owner                  = THIS_MODULE,
 650         .probe                  = mt9m111_video_probe,
 651         .remove                 = mt9m111_video_remove,
 652         .init                   = mt9m111_init,
 653         .resume                 = mt9m111_resume,
 654         .release                = mt9m111_release,
 655         .start_capture          = mt9m111_start_capture,
 656         .stop_capture           = mt9m111_stop_capture,
 657         .set_crop               = mt9m111_set_crop,
 658         .set_fmt                = mt9m111_set_fmt,
 659         .try_fmt                = mt9m111_try_fmt,
 660         .query_bus_param        = mt9m111_query_bus_param,
 661         .set_bus_param          = mt9m111_set_bus_param,
 662         .controls               = mt9m111_controls,
 663         .num_controls           = ARRAY_SIZE(mt9m111_controls),
 664         .get_control            = mt9m111_get_control,
 665         .set_control            = mt9m111_set_control,
 666         .get_chip_id            = mt9m111_get_chip_id,
 667 #ifdef CONFIG_VIDEO_ADV_DEBUG
 668         .get_register           = mt9m111_get_register,
 669         .set_register           = mt9m111_set_register,
 670 #endif
 671 };
 672
 673 static int mt9m111_set_flip(struct soc_camera_device *icd, int flip, int mask)
 674 {
 675         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 676         int ret;
 677
 678         if (mt9m111->context == HIGHPOWER) {
 679                 if (flip)
 680                         ret = reg_set(READ_MODE_B, mask);
 681                 else
 682                         ret = reg_clear(READ_MODE_B, mask);
 683         } else {
 684                 if (flip)
 685                         ret = reg_set(READ_MODE_A, mask);
 686                 else
 687                         ret = reg_clear(READ_MODE_A, mask);
 688         }
 689
 690         return ret;
 691 }
 692
 693 static int mt9m111_get_global_gain(struct soc_camera_device *icd)
 694 {
 695         int data;
 696
 697         data = reg_read(GLOBAL_GAIN);
 698         if (data >= 0)
 699                 return (data & 0x2f) * (1 << ((data >> 10) & 1)) *
 700                         (1 << ((data >> 9) & 1));
 701         return data;
 702 }
 703
 704 static int mt9m111_set_global_gain(struct soc_camera_device *icd, int gain)
 705 {
 706         u16 val;
 707
 708         if (gain > 63 * 2 * 2)
 709                 return -EINVAL;
 710
 711         icd->gain = gain;
 712         if ((gain >= 64 * 2) && (gain < 63 * 2 * 2))
 713                 val = (1 << 10) | (1 << 9) | (gain / 4);
 714         else if ((gain >= 64) && (gain < 64 * 2))
 715                 val = (1 << 9) | (gain / 2);
 716         else
 717                 val = gain;
 718
 719         return reg_write(GLOBAL_GAIN, val);
 720 }
 721
 722 static int mt9m111_set_autoexposure(struct soc_camera_device *icd, int on)
 723 {
 724         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 725         int ret;
 726
 727         if (on)
 728                 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
 729         else
 730                 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
 731
 732         if (!ret)
 733                 mt9m111->autoexposure = on;
 734
 735         return ret;
 736 }
 737
 738 static int mt9m111_set_autowhitebalance(struct soc_camera_device *icd, int on)
 739 {
 740         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 741         int ret;
 742
 743         if (on)
 744                 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
 745         else
 746                 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
 747
 748         if (!ret)
 749                 mt9m111->autowhitebalance = on;
 750
 751         return ret;
 752 }
 753
 754 static int mt9m111_get_control(struct soc_camera_device *icd,
 755                                struct v4l2_control *ctrl)
 756 {
 757         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 758         int data;
 759
 760         switch (ctrl->id) {
 761         case V4L2_CID_VFLIP:
 762                 if (mt9m111->context == HIGHPOWER)
 763                         data = reg_read(READ_MODE_B);
 764                 else
 765                         data = reg_read(READ_MODE_A);
 766
 767                 if (data < 0)
 768                         return -EIO;
 769                 ctrl->value = !!(data & MT9M111_RMB_MIRROR_ROWS);
 770                 break;
 771         case V4L2_CID_HFLIP:
 772                 if (mt9m111->context == HIGHPOWER)
 773                         data = reg_read(READ_MODE_B);
 774                 else
 775                         data = reg_read(READ_MODE_A);
 776
 777                 if (data < 0)
 778                         return -EIO;
 779                 ctrl->value = !!(data & MT9M111_RMB_MIRROR_COLS);
 780                 break;
 781         case V4L2_CID_GAIN:
 782                 data = mt9m111_get_global_gain(icd);
 783                 if (data < 0)
 784                         return data;
 785                 ctrl->value = data;
 786                 break;
 787         case V4L2_CID_EXPOSURE_AUTO:
 788                 ctrl->value = mt9m111->autoexposure;
 789                 break;
 790         case V4L2_CID_AUTO_WHITE_BALANCE:
 791                 ctrl->value = mt9m111->autowhitebalance;
 792                 break;
 793         }
 794         return 0;
 795 }
 796
 797 static int mt9m111_set_control(struct soc_camera_device *icd,
 798                                struct v4l2_control *ctrl)
 799 {
 800         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 801         const struct v4l2_queryctrl *qctrl;
 802         int ret;
 803
 804         qctrl = soc_camera_find_qctrl(&mt9m111_ops, ctrl->id);
 805
 806         if (!qctrl)
 807                 return -EINVAL;
 808
 809         switch (ctrl->id) {
 810         case V4L2_CID_VFLIP:
 811                 mt9m111->vflip = ctrl->value;
 812                 ret = mt9m111_set_flip(icd, ctrl->value,
 813                                         MT9M111_RMB_MIRROR_ROWS);
 814                 break;
 815         case V4L2_CID_HFLIP:
 816                 mt9m111->hflip = ctrl->value;
 817                 ret = mt9m111_set_flip(icd, ctrl->value,
 818                                         MT9M111_RMB_MIRROR_COLS);
 819                 break;
 820         case V4L2_CID_GAIN:
 821                 ret = mt9m111_set_global_gain(icd, ctrl->value);
 822                 break;
 823         case V4L2_CID_EXPOSURE_AUTO:
 824                 ret =  mt9m111_set_autoexposure(icd, ctrl->value);
 825                 break;
 826         case V4L2_CID_AUTO_WHITE_BALANCE:
 827                 ret =  mt9m111_set_autowhitebalance(icd, ctrl->value);
 828                 break;
 829         default:
 830                 ret = -EINVAL;
 831         }
 832
 833         return ret;
 834 }
 835
 836 static int mt9m111_restore_state(struct soc_camera_device *icd)
 837 {
 838         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 839
 840         mt9m111_set_context(icd, mt9m111->context);
 841         mt9m111_set_pixfmt(icd, mt9m111->pixfmt);
 842         mt9m111_setup_rect(icd, &mt9m111->rect);
 843         mt9m111_set_flip(icd, mt9m111->hflip, MT9M111_RMB_MIRROR_COLS);
 844         mt9m111_set_flip(icd, mt9m111->vflip, MT9M111_RMB_MIRROR_ROWS);
 845         mt9m111_set_global_gain(icd, icd->gain);
 846         mt9m111_set_autoexposure(icd, mt9m111->autoexposure);
 847         mt9m111_set_autowhitebalance(icd, mt9m111->autowhitebalance);
 848         return 0;
 849 }
 850
 851 static int mt9m111_resume(struct soc_camera_device *icd)
 852 {
 853         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 854         int ret = 0;
 855
 856         if (mt9m111->powered) {
 857                 ret = mt9m111_enable(icd);
 858                 if (!ret)
 859                         ret = mt9m111_reset(icd);
 860                 if (!ret)
 861                         ret = mt9m111_restore_state(icd);
 862         }
 863         return ret;
 864 }
 865
 866 static int mt9m111_init(struct soc_camera_device *icd)
 867 {
 868         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 869         int ret;
 870
 871         mt9m111->context = HIGHPOWER;
 872         ret = mt9m111_enable(icd);
 873         if (!ret)
 874                 ret = mt9m111_reset(icd);
 875         if (!ret)
 876                 ret = mt9m111_set_context(icd, mt9m111->context);
 877         if (!ret)
 878                 ret = mt9m111_set_autoexposure(icd, mt9m111->autoexposure);
 879         if (ret)
 880                 dev_err(&icd->dev, "mt9m11x init failed: %d\n", ret);
 881         return ret;
 882 }
 883
 884 static int mt9m111_release(struct soc_camera_device *icd)
 885 {
 886         int ret;
 887
 888         ret = mt9m111_disable(icd);
 889         if (ret < 0)
 890                 dev_err(&icd->dev, "mt9m11x release failed: %d\n", ret);
 891
 892         return ret;
 893 }
 894
 895 /*
 896  * Interface active, can use i2c. If it fails, it can indeed mean, that
 897  * this wasn't our capture interface, so, we wait for the right one
 898  */
 899 static int mt9m111_video_probe(struct soc_camera_device *icd)
 900 {
 901         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 902         s32 data;
 903         int ret;
 904
 905         /*
 906          * We must have a parent by now. And it cannot be a wrong one.
 907          * So this entire test is completely redundant.
 908          */
 909         if (!icd->dev.parent ||
 910             to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
 911                 return -ENODEV;
 912
 913         ret = mt9m111_enable(icd);
 914         if (ret)
 915                 goto ei2c;
 916         ret = mt9m111_reset(icd);
 917         if (ret)
 918                 goto ei2c;
 919
 920         data = reg_read(CHIP_VERSION);
 921
 922         switch (data) {
 923         case 0x143a: /* MT9M111 */
 924                 mt9m111->model = V4L2_IDENT_MT9M111;
 925                 break;
 926         case 0x148c: /* MT9M112 */
 927                 mt9m111->model = V4L2_IDENT_MT9M112;
 928                 break;
 929         default:
 930                 ret = -ENODEV;
 931                 dev_err(&icd->dev,
 932                         "No MT9M11x chip detected, register read %x\n", data);
 933                 goto ei2c;
 934         }
 935
 936         icd->formats = mt9m111_colour_formats;
 937         icd->num_formats = ARRAY_SIZE(mt9m111_colour_formats);
 938
 939         dev_info(&icd->dev, "Detected a MT9M11x chip ID %x\n", data);
 940
 941         ret = soc_camera_video_start(icd);
 942         if (ret)
 943                 goto eisis;
 944
 945         mt9m111->autoexposure = 1;
 946         mt9m111->autowhitebalance = 1;
 947
 948         mt9m111->swap_rgb_even_odd = 1;
 949         mt9m111->swap_rgb_red_blue = 1;
 950
 951         return 0;
 952 eisis:
 953 ei2c:
 954         return ret;
 955 }
 956
 957 static void mt9m111_video_remove(struct soc_camera_device *icd)
 958 {
 959         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 960
 961         dev_dbg(&icd->dev, "Video %x removed: %p, %p\n", mt9m111->client->addr,
 962                 mt9m111->icd.dev.parent, mt9m111->icd.vdev);
 963         soc_camera_video_stop(&mt9m111->icd);
 964 }
 965
 966 static int mt9m111_probe(struct i2c_client *client,
 967                          const struct i2c_device_id *did)
 968 {
 969         struct mt9m111 *mt9m111;
 970         struct soc_camera_device *icd;
 971         struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
 972         struct soc_camera_link *icl = client->dev.platform_data;
 973         int ret;
 974
 975         if (!icl) {
 976                 dev_err(&client->dev, "MT9M11x driver needs platform data\n");
 977                 return -EINVAL;
 978         }
 979
 980         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
 981                 dev_warn(&adapter->dev,
 982                          "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
 983                 return -EIO;
 984         }
 985
 986         mt9m111 = kzalloc(sizeof(struct mt9m111), GFP_KERNEL);
 987         if (!mt9m111)
 988                 return -ENOMEM;
 989
 990         mt9m111->client = client;
 991         i2c_set_clientdata(client, mt9m111);
 992
 993         /* Second stage probe - when a capture adapter is there */
 994         icd             = &mt9m111->icd;
 995         icd->ops        = &mt9m111_ops;
 996         icd->control    = &client->dev;
 997         icd->x_min      = MT9M111_MIN_DARK_COLS;
 998         icd->y_min      = MT9M111_MIN_DARK_ROWS;
 999         icd->x_current  = icd->x_min;
1000         icd->y_current  = icd->y_min;
1001         icd->width_min  = MT9M111_MIN_DARK_ROWS;
1002         icd->width_max  = MT9M111_MAX_WIDTH;
1003         icd->height_min = MT9M111_MIN_DARK_COLS;
1004         icd->height_max = MT9M111_MAX_HEIGHT;
1005         icd->y_skip_top = 0;
1006         icd->iface      = icl->bus_id;
1007
1008         ret = soc_camera_device_register(icd);
1009         if (ret)
1010                 goto eisdr;
1011         return 0;
1012
1013 eisdr:
1014         kfree(mt9m111);
1015         return ret;
1016 }
1017
1018 static int mt9m111_remove(struct i2c_client *client)
1019 {
1020         struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
1021         soc_camera_device_unregister(&mt9m111->icd);
1022         kfree(mt9m111);
1023
1024         return 0;
1025 }
1026
1027 static const struct i2c_device_id mt9m111_id[] = {
1028         { "mt9m111", 0 },
1029         { }
1030 };
1031 MODULE_DEVICE_TABLE(i2c, mt9m111_id);
1032
1033 static struct i2c_driver mt9m111_i2c_driver = {
1034         .driver = {
1035                 .name = "mt9m111",
1036         },
1037         .probe          = mt9m111_probe,
1038         .remove         = mt9m111_remove,
1039         .id_table       = mt9m111_id,
1040 };
1041
1042 static int __init mt9m111_mod_init(void)
1043 {
1044         return i2c_add_driver(&mt9m111_i2c_driver);
1045 }
1046
1047 static void __exit mt9m111_mod_exit(void)
1048 {
1049         i2c_del_driver(&mt9m111_i2c_driver);
1050 }
1051
1052 module_init(mt9m111_mod_init);
1053 module_exit(mt9m111_mod_exit);
1054
1055 MODULE_DESCRIPTION("Micron MT9M111/MT9M112 Camera driver");
1056 MODULE_AUTHOR("Robert Jarzmik");
1057 MODULE_LICENSE("GPL");