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 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 i2c_client *client, const u16 reg)
 188 {
 189         int ret;
 190
 191         ret = reg_page_map_set(client, reg);
 192         if (!ret)
 193                 ret = swab16(i2c_smbus_read_word_data(client, (reg & 0xff)));
 194
 195         dev_dbg(&client->dev, "read  reg.%03x -> %04x\n", reg, ret);
 196         return ret;
 197 }
 198
 199 static int mt9m111_reg_write(struct i2c_client *client, const u16 reg,
 200                              const u16 data)
 201 {
 202         int ret;
 203
 204         ret = reg_page_map_set(client, reg);
 205         if (!ret)
 206                 ret = i2c_smbus_write_word_data(client, (reg & 0xff),
 207                                                 swab16(data));
 208         dev_dbg(&client->dev, "write reg.%03x = %04x -> %d\n", reg, data, ret);
 209         return ret;
 210 }
 211
 212 static int mt9m111_reg_set(struct i2c_client *client, const u16 reg,
 213                            const u16 data)
 214 {
 215         int ret;
 216
 217         ret = mt9m111_reg_read(client, reg);
 218         if (ret >= 0)
 219                 ret = mt9m111_reg_write(client, reg, ret | data);
 220         return ret;
 221 }
 222
 223 static int mt9m111_reg_clear(struct i2c_client *client, const u16 reg,
 224                              const u16 data)
 225 {
 226         int ret;
 227
 228         ret = mt9m111_reg_read(client, reg);
 229         return mt9m111_reg_write(client, reg, ret & ~data);
 230 }
 231
 232 static int mt9m111_set_context(struct soc_camera_device *icd,
 233                                enum mt9m111_context ctxt)
 234 {
 235         struct i2c_client *client = to_i2c_client(icd->control);
 236         int valB = MT9M111_CTXT_CTRL_RESTART | MT9M111_CTXT_CTRL_DEFECTCOR_B
 237                 | MT9M111_CTXT_CTRL_RESIZE_B | MT9M111_CTXT_CTRL_CTRL2_B
 238                 | MT9M111_CTXT_CTRL_GAMMA_B | MT9M111_CTXT_CTRL_READ_MODE_B
 239                 | MT9M111_CTXT_CTRL_VBLANK_SEL_B
 240                 | MT9M111_CTXT_CTRL_HBLANK_SEL_B;
 241         int valA = MT9M111_CTXT_CTRL_RESTART;
 242
 243         if (ctxt == HIGHPOWER)
 244                 return reg_write(CONTEXT_CONTROL, valB);
 245         else
 246                 return reg_write(CONTEXT_CONTROL, valA);
 247 }
 248
 249 static int mt9m111_setup_rect(struct soc_camera_device *icd,
 250                               struct v4l2_rect *rect)
 251 {
 252         struct i2c_client *client = to_i2c_client(icd->control);
 253         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 254         int ret, is_raw_format;
 255         int width = rect->width;
 256         int height = rect->height;
 257
 258         if ((mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR8)
 259             || (mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR16))
 260                 is_raw_format = 1;
 261         else
 262                 is_raw_format = 0;
 263
 264         ret = reg_write(COLUMN_START, rect->left);
 265         if (!ret)
 266                 ret = reg_write(ROW_START, rect->top);
 267
 268         if (is_raw_format) {
 269                 if (!ret)
 270                         ret = reg_write(WINDOW_WIDTH, width);
 271                 if (!ret)
 272                         ret = reg_write(WINDOW_HEIGHT, height);
 273         } else {
 274                 if (!ret)
 275                         ret = reg_write(REDUCER_XZOOM_B, MT9M111_MAX_WIDTH);
 276                 if (!ret)
 277                         ret = reg_write(REDUCER_YZOOM_B, MT9M111_MAX_HEIGHT);
 278                 if (!ret)
 279                         ret = reg_write(REDUCER_XSIZE_B, width);
 280                 if (!ret)
 281                         ret = reg_write(REDUCER_YSIZE_B, height);
 282                 if (!ret)
 283                         ret = reg_write(REDUCER_XZOOM_A, MT9M111_MAX_WIDTH);
 284                 if (!ret)
 285                         ret = reg_write(REDUCER_YZOOM_A, MT9M111_MAX_HEIGHT);
 286                 if (!ret)
 287                         ret = reg_write(REDUCER_XSIZE_A, width);
 288                 if (!ret)
 289                         ret = reg_write(REDUCER_YSIZE_A, height);
 290         }
 291
 292         return ret;
 293 }
 294
 295 static int mt9m111_setup_pixfmt(struct soc_camera_device *icd, u16 outfmt)
 296 {
 297         struct i2c_client *client = to_i2c_client(icd->control);
 298         int ret;
 299
 300         ret = reg_write(OUTPUT_FORMAT_CTRL2_A, outfmt);
 301         if (!ret)
 302                 ret = reg_write(OUTPUT_FORMAT_CTRL2_B, outfmt);
 303         return ret;
 304 }
 305
 306 static int mt9m111_setfmt_bayer8(struct soc_camera_device *icd)
 307 {
 308         return mt9m111_setup_pixfmt(icd, MT9M111_OUTFMT_PROCESSED_BAYER);
 309 }
 310
 311 static int mt9m111_setfmt_bayer10(struct soc_camera_device *icd)
 312 {
 313         return mt9m111_setup_pixfmt(icd, MT9M111_OUTFMT_BYPASS_IFP);
 314 }
 315
 316 static int mt9m111_setfmt_rgb565(struct soc_camera_device *icd)
 317 {
 318         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 319         int val = 0;
 320
 321         if (mt9m111->swap_rgb_red_blue)
 322                 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
 323         if (mt9m111->swap_rgb_even_odd)
 324                 val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
 325         val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565;
 326
 327         return mt9m111_setup_pixfmt(icd, val);
 328 }
 329
 330 static int mt9m111_setfmt_rgb555(struct soc_camera_device *icd)
 331 {
 332         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 333         int val = 0;
 334
 335         if (mt9m111->swap_rgb_red_blue)
 336                 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
 337         if (mt9m111->swap_rgb_even_odd)
 338                 val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
 339         val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555;
 340
 341         return mt9m111_setup_pixfmt(icd, val);
 342 }
 343
 344 static int mt9m111_setfmt_yuv(struct soc_camera_device *icd)
 345 {
 346         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 347         int val = 0;
 348
 349         if (mt9m111->swap_yuv_cb_cr)
 350                 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
 351         if (mt9m111->swap_yuv_y_chromas)
 352                 val |= MT9M111_OUTFMT_SWAP_YCbCr_C_Y;
 353
 354         return mt9m111_setup_pixfmt(icd, val);
 355 }
 356
 357 static int mt9m111_enable(struct soc_camera_device *icd)
 358 {
 359         struct i2c_client *client = to_i2c_client(icd->control);
 360         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 361         struct soc_camera_link *icl = client->dev.platform_data;
 362         int ret;
 363
 364         if (icl->power) {
 365                 ret = icl->power(&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 i2c_client *client = to_i2c_client(icd->control);
 382         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 383         struct soc_camera_link *icl = client->dev.platform_data;
 384         int ret;
 385
 386         ret = reg_clear(RESET, MT9M111_RESET_CHIP_ENABLE);
 387         if (!ret)
 388                 mt9m111->powered = 0;
 389
 390         if (icl->power)
 391                 icl->power(&client->dev, 0);
 392
 393         return ret;
 394 }
 395
 396 static int mt9m111_reset(struct soc_camera_device *icd)
 397 {
 398         struct i2c_client *client = to_i2c_client(icd->control);
 399         struct soc_camera_link *icl = client->dev.platform_data;
 400         int ret;
 401
 402         ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
 403         if (!ret)
 404                 ret = reg_set(RESET, MT9M111_RESET_RESET_SOC);
 405         if (!ret)
 406                 ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE
 407                                 | MT9M111_RESET_RESET_SOC);
 408
 409         if (icl->reset)
 410                 icl->reset(&client->dev);
 411
 412         return ret;
 413 }
 414
 415 static int mt9m111_start_capture(struct soc_camera_device *icd)
 416 {
 417         return 0;
 418 }
 419
 420 static int mt9m111_stop_capture(struct soc_camera_device *icd)
 421 {
 422         return 0;
 423 }
 424
 425 static unsigned long mt9m111_query_bus_param(struct soc_camera_device *icd)
 426 {
 427         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 428         struct soc_camera_link *icl = mt9m111->client->dev.platform_data;
 429         unsigned long flags = SOCAM_MASTER | SOCAM_PCLK_SAMPLE_RISING |
 430                 SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH |
 431                 SOCAM_DATA_ACTIVE_HIGH | SOCAM_DATAWIDTH_8;
 432
 433         return soc_camera_apply_sensor_flags(icl, flags);
 434 }
 435
 436 static int mt9m111_set_bus_param(struct soc_camera_device *icd, unsigned long f)
 437 {
 438         return 0;
 439 }
 440
 441 static int mt9m111_set_crop(struct soc_camera_device *icd,
 442                             struct v4l2_rect *rect)
 443 {
 444         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 445         int ret;
 446
 447         dev_dbg(&icd->dev, "%s left=%d, top=%d, width=%d, height=%d\n",
 448                 __func__, rect->left, rect->top, rect->width,
 449                 rect->height);
 450
 451         ret = mt9m111_setup_rect(icd, rect);
 452         if (!ret)
 453                 mt9m111->rect = *rect;
 454         return ret;
 455 }
 456
 457 static int mt9m111_set_pixfmt(struct soc_camera_device *icd, u32 pixfmt)
 458 {
 459         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 460         int ret;
 461
 462         switch (pixfmt) {
 463         case V4L2_PIX_FMT_SBGGR8:
 464                 ret = mt9m111_setfmt_bayer8(icd);
 465                 break;
 466         case V4L2_PIX_FMT_SBGGR16:
 467                 ret = mt9m111_setfmt_bayer10(icd);
 468                 break;
 469         case V4L2_PIX_FMT_RGB555:
 470                 ret = mt9m111_setfmt_rgb555(icd);
 471                 break;
 472         case V4L2_PIX_FMT_RGB565:
 473                 ret = mt9m111_setfmt_rgb565(icd);
 474                 break;
 475         case V4L2_PIX_FMT_UYVY:
 476                 mt9m111->swap_yuv_y_chromas = 0;
 477                 mt9m111->swap_yuv_cb_cr = 0;
 478                 ret = mt9m111_setfmt_yuv(icd);
 479                 break;
 480         case V4L2_PIX_FMT_VYUY:
 481                 mt9m111->swap_yuv_y_chromas = 0;
 482                 mt9m111->swap_yuv_cb_cr = 1;
 483                 ret = mt9m111_setfmt_yuv(icd);
 484                 break;
 485         case V4L2_PIX_FMT_YUYV:
 486                 mt9m111->swap_yuv_y_chromas = 1;
 487                 mt9m111->swap_yuv_cb_cr = 0;
 488                 ret = mt9m111_setfmt_yuv(icd);
 489                 break;
 490         case V4L2_PIX_FMT_YVYU:
 491                 mt9m111->swap_yuv_y_chromas = 1;
 492                 mt9m111->swap_yuv_cb_cr = 1;
 493                 ret = mt9m111_setfmt_yuv(icd);
 494                 break;
 495         default:
 496                 dev_err(&icd->dev, "Pixel format not handled : %x\n", pixfmt);
 497                 ret = -EINVAL;
 498         }
 499
 500         if (!ret)
 501                 mt9m111->pixfmt = pixfmt;
 502
 503         return ret;
 504 }
 505
 506 static int mt9m111_set_fmt(struct soc_camera_device *icd,
 507                            struct v4l2_format *f)
 508 {
 509         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 510         struct v4l2_pix_format *pix = &f->fmt.pix;
 511         struct v4l2_rect rect = {
 512                 .left   = mt9m111->rect.left,
 513                 .top    = mt9m111->rect.top,
 514                 .width  = pix->width,
 515                 .height = pix->height,
 516         };
 517         int ret;
 518
 519         dev_dbg(&icd->dev, "%s fmt=%x left=%d, top=%d, width=%d, height=%d\n",
 520                 __func__, pix->pixelformat, rect.left, rect.top, rect.width,
 521                 rect.height);
 522
 523         ret = mt9m111_setup_rect(icd, &rect);
 524         if (!ret)
 525                 ret = mt9m111_set_pixfmt(icd, pix->pixelformat);
 526         if (!ret)
 527                 mt9m111->rect = rect;
 528         return ret;
 529 }
 530
 531 static int mt9m111_try_fmt(struct soc_camera_device *icd,
 532                            struct v4l2_format *f)
 533 {
 534         struct v4l2_pix_format *pix = &f->fmt.pix;
 535
 536         if (pix->height > MT9M111_MAX_HEIGHT)
 537                 pix->height = MT9M111_MAX_HEIGHT;
 538         if (pix->width > MT9M111_MAX_WIDTH)
 539                 pix->width = MT9M111_MAX_WIDTH;
 540
 541         return 0;
 542 }
 543
 544 static int mt9m111_get_chip_id(struct soc_camera_device *icd,
 545                                struct v4l2_dbg_chip_ident *id)
 546 {
 547         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 548
 549         if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
 550                 return -EINVAL;
 551
 552         if (id->match.addr != mt9m111->client->addr)
 553                 return -ENODEV;
 554
 555         id->ident       = mt9m111->model;
 556         id->revision    = 0;
 557
 558         return 0;
 559 }
 560
 561 #ifdef CONFIG_VIDEO_ADV_DEBUG
 562 static int mt9m111_get_register(struct soc_camera_device *icd,
 563                                 struct v4l2_dbg_register *reg)
 564 {
 565         int val;
 566         struct i2c_client *client = to_i2c_client(icd->control);
 567
 568         if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
 569                 return -EINVAL;
 570         if (reg->match.addr != client->addr)
 571                 return -ENODEV;
 572
 573         val = mt9m111_reg_read(client, 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 i2c_client *client = to_i2c_client(icd->control);
 587
 588         if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
 589                 return -EINVAL;
 590
 591         if (reg->match.addr != client->addr)
 592                 return -ENODEV;
 593
 594         if (mt9m111_reg_write(client, 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 i2c_client *client = to_i2c_client(icd->control);
 676         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 677         int ret;
 678
 679         if (mt9m111->context == HIGHPOWER) {
 680                 if (flip)
 681                         ret = reg_set(READ_MODE_B, mask);
 682                 else
 683                         ret = reg_clear(READ_MODE_B, mask);
 684         } else {
 685                 if (flip)
 686                         ret = reg_set(READ_MODE_A, mask);
 687                 else
 688                         ret = reg_clear(READ_MODE_A, mask);
 689         }
 690
 691         return ret;
 692 }
 693
 694 static int mt9m111_get_global_gain(struct soc_camera_device *icd)
 695 {
 696         struct i2c_client *client = to_i2c_client(icd->control);
 697         int data;
 698
 699         data = reg_read(GLOBAL_GAIN);
 700         if (data >= 0)
 701                 return (data & 0x2f) * (1 << ((data >> 10) & 1)) *
 702                         (1 << ((data >> 9) & 1));
 703         return data;
 704 }
 705
 706 static int mt9m111_set_global_gain(struct soc_camera_device *icd, int gain)
 707 {
 708         struct i2c_client *client = to_i2c_client(icd->control);
 709         u16 val;
 710
 711         if (gain > 63 * 2 * 2)
 712                 return -EINVAL;
 713
 714         icd->gain = gain;
 715         if ((gain >= 64 * 2) && (gain < 63 * 2 * 2))
 716                 val = (1 << 10) | (1 << 9) | (gain / 4);
 717         else if ((gain >= 64) && (gain < 64 * 2))
 718                 val = (1 << 9) | (gain / 2);
 719         else
 720                 val = gain;
 721
 722         return reg_write(GLOBAL_GAIN, val);
 723 }
 724
 725 static int mt9m111_set_autoexposure(struct soc_camera_device *icd, int on)
 726 {
 727         struct i2c_client *client = to_i2c_client(icd->control);
 728         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 729         int ret;
 730
 731         if (on)
 732                 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
 733         else
 734                 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
 735
 736         if (!ret)
 737                 mt9m111->autoexposure = on;
 738
 739         return ret;
 740 }
 741
 742 static int mt9m111_set_autowhitebalance(struct soc_camera_device *icd, int on)
 743 {
 744         struct i2c_client *client = to_i2c_client(icd->control);
 745         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 746         int ret;
 747
 748         if (on)
 749                 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
 750         else
 751                 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
 752
 753         if (!ret)
 754                 mt9m111->autowhitebalance = on;
 755
 756         return ret;
 757 }
 758
 759 static int mt9m111_get_control(struct soc_camera_device *icd,
 760                                struct v4l2_control *ctrl)
 761 {
 762         struct i2c_client *client = to_i2c_client(icd->control);
 763         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 764         int data;
 765
 766         switch (ctrl->id) {
 767         case V4L2_CID_VFLIP:
 768                 if (mt9m111->context == HIGHPOWER)
 769                         data = reg_read(READ_MODE_B);
 770                 else
 771                         data = reg_read(READ_MODE_A);
 772
 773                 if (data < 0)
 774                         return -EIO;
 775                 ctrl->value = !!(data & MT9M111_RMB_MIRROR_ROWS);
 776                 break;
 777         case V4L2_CID_HFLIP:
 778                 if (mt9m111->context == HIGHPOWER)
 779                         data = reg_read(READ_MODE_B);
 780                 else
 781                         data = reg_read(READ_MODE_A);
 782
 783                 if (data < 0)
 784                         return -EIO;
 785                 ctrl->value = !!(data & MT9M111_RMB_MIRROR_COLS);
 786                 break;
 787         case V4L2_CID_GAIN:
 788                 data = mt9m111_get_global_gain(icd);
 789                 if (data < 0)
 790                         return data;
 791                 ctrl->value = data;
 792                 break;
 793         case V4L2_CID_EXPOSURE_AUTO:
 794                 ctrl->value = mt9m111->autoexposure;
 795                 break;
 796         case V4L2_CID_AUTO_WHITE_BALANCE:
 797                 ctrl->value = mt9m111->autowhitebalance;
 798                 break;
 799         }
 800         return 0;
 801 }
 802
 803 static int mt9m111_set_control(struct soc_camera_device *icd,
 804                                struct v4l2_control *ctrl)
 805 {
 806         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 807         const struct v4l2_queryctrl *qctrl;
 808         int ret;
 809
 810         qctrl = soc_camera_find_qctrl(&mt9m111_ops, ctrl->id);
 811
 812         if (!qctrl)
 813                 return -EINVAL;
 814
 815         switch (ctrl->id) {
 816         case V4L2_CID_VFLIP:
 817                 mt9m111->vflip = ctrl->value;
 818                 ret = mt9m111_set_flip(icd, ctrl->value,
 819                                         MT9M111_RMB_MIRROR_ROWS);
 820                 break;
 821         case V4L2_CID_HFLIP:
 822                 mt9m111->hflip = ctrl->value;
 823                 ret = mt9m111_set_flip(icd, ctrl->value,
 824                                         MT9M111_RMB_MIRROR_COLS);
 825                 break;
 826         case V4L2_CID_GAIN:
 827                 ret = mt9m111_set_global_gain(icd, ctrl->value);
 828                 break;
 829         case V4L2_CID_EXPOSURE_AUTO:
 830                 ret =  mt9m111_set_autoexposure(icd, ctrl->value);
 831                 break;
 832         case V4L2_CID_AUTO_WHITE_BALANCE:
 833                 ret =  mt9m111_set_autowhitebalance(icd, ctrl->value);
 834                 break;
 835         default:
 836                 ret = -EINVAL;
 837         }
 838
 839         return ret;
 840 }
 841
 842 static int mt9m111_restore_state(struct soc_camera_device *icd)
 843 {
 844         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 845
 846         mt9m111_set_context(icd, mt9m111->context);
 847         mt9m111_set_pixfmt(icd, mt9m111->pixfmt);
 848         mt9m111_setup_rect(icd, &mt9m111->rect);
 849         mt9m111_set_flip(icd, mt9m111->hflip, MT9M111_RMB_MIRROR_COLS);
 850         mt9m111_set_flip(icd, mt9m111->vflip, MT9M111_RMB_MIRROR_ROWS);
 851         mt9m111_set_global_gain(icd, icd->gain);
 852         mt9m111_set_autoexposure(icd, mt9m111->autoexposure);
 853         mt9m111_set_autowhitebalance(icd, mt9m111->autowhitebalance);
 854         return 0;
 855 }
 856
 857 static int mt9m111_resume(struct soc_camera_device *icd)
 858 {
 859         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 860         int ret = 0;
 861
 862         if (mt9m111->powered) {
 863                 ret = mt9m111_enable(icd);
 864                 if (!ret)
 865                         ret = mt9m111_reset(icd);
 866                 if (!ret)
 867                         ret = mt9m111_restore_state(icd);
 868         }
 869         return ret;
 870 }
 871
 872 static int mt9m111_init(struct soc_camera_device *icd)
 873 {
 874         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 875         int ret;
 876
 877         mt9m111->context = HIGHPOWER;
 878         ret = mt9m111_enable(icd);
 879         if (!ret)
 880                 ret = mt9m111_reset(icd);
 881         if (!ret)
 882                 ret = mt9m111_set_context(icd, mt9m111->context);
 883         if (!ret)
 884                 ret = mt9m111_set_autoexposure(icd, mt9m111->autoexposure);
 885         if (ret)
 886                 dev_err(&icd->dev, "mt9m11x init failed: %d\n", ret);
 887         return ret;
 888 }
 889
 890 static int mt9m111_release(struct soc_camera_device *icd)
 891 {
 892         int ret;
 893
 894         ret = mt9m111_disable(icd);
 895         if (ret < 0)
 896                 dev_err(&icd->dev, "mt9m11x release failed: %d\n", ret);
 897
 898         return ret;
 899 }
 900
 901 /*
 902  * Interface active, can use i2c. If it fails, it can indeed mean, that
 903  * this wasn't our capture interface, so, we wait for the right one
 904  */
 905 static int mt9m111_video_probe(struct soc_camera_device *icd)
 906 {
 907         struct i2c_client *client = to_i2c_client(icd->control);
 908         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 909         s32 data;
 910         int ret;
 911
 912         /*
 913          * We must have a parent by now. And it cannot be a wrong one.
 914          * So this entire test is completely redundant.
 915          */
 916         if (!icd->dev.parent ||
 917             to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
 918                 return -ENODEV;
 919
 920         ret = mt9m111_enable(icd);
 921         if (ret)
 922                 goto ei2c;
 923         ret = mt9m111_reset(icd);
 924         if (ret)
 925                 goto ei2c;
 926
 927         data = reg_read(CHIP_VERSION);
 928
 929         switch (data) {
 930         case 0x143a: /* MT9M111 */
 931                 mt9m111->model = V4L2_IDENT_MT9M111;
 932                 break;
 933         case 0x148c: /* MT9M112 */
 934                 mt9m111->model = V4L2_IDENT_MT9M112;
 935                 break;
 936         default:
 937                 ret = -ENODEV;
 938                 dev_err(&icd->dev,
 939                         "No MT9M11x chip detected, register read %x\n", data);
 940                 goto ei2c;
 941         }
 942
 943         icd->formats = mt9m111_colour_formats;
 944         icd->num_formats = ARRAY_SIZE(mt9m111_colour_formats);
 945
 946         dev_info(&icd->dev, "Detected a MT9M11x chip ID %x\n", data);
 947
 948         ret = soc_camera_video_start(icd);
 949         if (ret)
 950                 goto eisis;
 951
 952         mt9m111->autoexposure = 1;
 953         mt9m111->autowhitebalance = 1;
 954
 955         mt9m111->swap_rgb_even_odd = 1;
 956         mt9m111->swap_rgb_red_blue = 1;
 957
 958         return 0;
 959 eisis:
 960 ei2c:
 961         return ret;
 962 }
 963
 964 static void mt9m111_video_remove(struct soc_camera_device *icd)
 965 {
 966         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 967
 968         dev_dbg(&icd->dev, "Video %x removed: %p, %p\n", mt9m111->client->addr,
 969                 mt9m111->icd.dev.parent, mt9m111->icd.vdev);
 970         soc_camera_video_stop(&mt9m111->icd);
 971 }
 972
 973 static int mt9m111_probe(struct i2c_client *client,
 974                          const struct i2c_device_id *did)
 975 {
 976         struct mt9m111 *mt9m111;
 977         struct soc_camera_device *icd;
 978         struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
 979         struct soc_camera_link *icl = client->dev.platform_data;
 980         int ret;
 981
 982         if (!icl) {
 983                 dev_err(&client->dev, "MT9M11x driver needs platform data\n");
 984                 return -EINVAL;
 985         }
 986
 987         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
 988                 dev_warn(&adapter->dev,
 989                          "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
 990                 return -EIO;
 991         }
 992
 993         mt9m111 = kzalloc(sizeof(struct mt9m111), GFP_KERNEL);
 994         if (!mt9m111)
 995                 return -ENOMEM;
 996
 997         mt9m111->client = client;
 998         i2c_set_clientdata(client, mt9m111);
 999
1000         /* Second stage probe - when a capture adapter is there */
1001         icd             = &mt9m111->icd;
1002         icd->ops        = &mt9m111_ops;
1003         icd->control    = &client->dev;
1004         icd->x_min      = MT9M111_MIN_DARK_COLS;
1005         icd->y_min      = MT9M111_MIN_DARK_ROWS;
1006         icd->x_current  = icd->x_min;
1007         icd->y_current  = icd->y_min;
1008         icd->width_min  = MT9M111_MIN_DARK_ROWS;
1009         icd->width_max  = MT9M111_MAX_WIDTH;
1010         icd->height_min = MT9M111_MIN_DARK_COLS;
1011         icd->height_max = MT9M111_MAX_HEIGHT;
1012         icd->y_skip_top = 0;
1013         icd->iface      = icl->bus_id;
1014
1015         ret = soc_camera_device_register(icd);
1016         if (ret)
1017                 goto eisdr;
1018         return 0;
1019
1020 eisdr:
1021         kfree(mt9m111);
1022         return ret;
1023 }
1024
1025 static int mt9m111_remove(struct i2c_client *client)
1026 {
1027         struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
1028         soc_camera_device_unregister(&mt9m111->icd);
1029         kfree(mt9m111);
1030
1031         return 0;
1032 }
1033
1034 static const struct i2c_device_id mt9m111_id[] = {
1035         { "mt9m111", 0 },
1036         { }
1037 };
1038 MODULE_DEVICE_TABLE(i2c, mt9m111_id);
1039
1040 static struct i2c_driver mt9m111_i2c_driver = {
1041         .driver = {
1042                 .name = "mt9m111",
1043         },
1044         .probe          = mt9m111_probe,
1045         .remove         = mt9m111_remove,
1046         .id_table       = mt9m111_id,
1047 };
1048
1049 static int __init mt9m111_mod_init(void)
1050 {
1051         return i2c_add_driver(&mt9m111_i2c_driver);
1052 }
1053
1054 static void __exit mt9m111_mod_exit(void)
1055 {
1056         i2c_del_driver(&mt9m111_i2c_driver);
1057 }
1058
1059 module_init(mt9m111_mod_init);
1060 module_exit(mt9m111_mod_exit);
1061
1062 MODULE_DESCRIPTION("Micron MT9M111/MT9M112 Camera driver");
1063 MODULE_AUTHOR("Robert Jarzmik");
1064 MODULE_LICENSE("GPL");