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         int model;      /* V4L2_IDENT_MT9M11x* codes from v4l2-chip-ident.h */
 152         enum mt9m111_context context;
 153         struct v4l2_rect rect;
 154         u32 pixfmt;
 155         unsigned char autoexposure;
 156         unsigned char datawidth;
 157         unsigned int powered:1;
 158         unsigned int hflip:1;
 159         unsigned int vflip:1;
 160         unsigned int swap_rgb_even_odd:1;
 161         unsigned int swap_rgb_red_blue:1;
 162         unsigned int swap_yuv_y_chromas:1;
 163         unsigned int swap_yuv_cb_cr:1;
 164         unsigned int autowhitebalance:1;
 165 };
 166
 167 static int reg_page_map_set(struct i2c_client *client, const u16 reg)
 168 {
 169         int ret;
 170         u16 page;
 171         static int lastpage = -1;       /* PageMap cache value */
 172
 173         page = (reg >> 8);
 174         if (page == lastpage)
 175                 return 0;
 176         if (page > 2)
 177                 return -EINVAL;
 178
 179         ret = i2c_smbus_write_word_data(client, MT9M111_PAGE_MAP, swab16(page));
 180         if (!ret)
 181                 lastpage = page;
 182         return ret;
 183 }
 184
 185 static int mt9m111_reg_read(struct i2c_client *client, const u16 reg)
 186 {
 187         int ret;
 188
 189         ret = reg_page_map_set(client, reg);
 190         if (!ret)
 191                 ret = swab16(i2c_smbus_read_word_data(client, (reg & 0xff)));
 192
 193         dev_dbg(&client->dev, "read  reg.%03x -> %04x\n", reg, ret);
 194         return ret;
 195 }
 196
 197 static int mt9m111_reg_write(struct i2c_client *client, const u16 reg,
 198                              const u16 data)
 199 {
 200         int ret;
 201
 202         ret = reg_page_map_set(client, reg);
 203         if (!ret)
 204                 ret = i2c_smbus_write_word_data(client, reg & 0xff,
 205                                                 swab16(data));
 206         dev_dbg(&client->dev, "write reg.%03x = %04x -> %d\n", reg, data, ret);
 207         return ret;
 208 }
 209
 210 static int mt9m111_reg_set(struct i2c_client *client, const u16 reg,
 211                            const u16 data)
 212 {
 213         int ret;
 214
 215         ret = mt9m111_reg_read(client, reg);
 216         if (ret >= 0)
 217                 ret = mt9m111_reg_write(client, reg, ret | data);
 218         return ret;
 219 }
 220
 221 static int mt9m111_reg_clear(struct i2c_client *client, const u16 reg,
 222                              const u16 data)
 223 {
 224         int ret;
 225
 226         ret = mt9m111_reg_read(client, reg);
 227         return mt9m111_reg_write(client, reg, ret & ~data);
 228 }
 229
 230 static int mt9m111_set_context(struct soc_camera_device *icd,
 231                                enum mt9m111_context ctxt)
 232 {
 233         struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 234         int valB = MT9M111_CTXT_CTRL_RESTART | MT9M111_CTXT_CTRL_DEFECTCOR_B
 235                 | MT9M111_CTXT_CTRL_RESIZE_B | MT9M111_CTXT_CTRL_CTRL2_B
 236                 | MT9M111_CTXT_CTRL_GAMMA_B | MT9M111_CTXT_CTRL_READ_MODE_B
 237                 | MT9M111_CTXT_CTRL_VBLANK_SEL_B
 238                 | MT9M111_CTXT_CTRL_HBLANK_SEL_B;
 239         int valA = MT9M111_CTXT_CTRL_RESTART;
 240
 241         if (ctxt == HIGHPOWER)
 242                 return reg_write(CONTEXT_CONTROL, valB);
 243         else
 244                 return reg_write(CONTEXT_CONTROL, valA);
 245 }
 246
 247 static int mt9m111_setup_rect(struct soc_camera_device *icd,
 248                               struct v4l2_rect *rect)
 249 {
 250         struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 251         struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
 252         int ret, is_raw_format;
 253         int width = rect->width;
 254         int height = rect->height;
 255
 256         if ((mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR8)
 257             || (mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR16))
 258                 is_raw_format = 1;
 259         else
 260                 is_raw_format = 0;
 261
 262         ret = reg_write(COLUMN_START, rect->left);
 263         if (!ret)
 264                 ret = reg_write(ROW_START, rect->top);
 265
 266         if (is_raw_format) {
 267                 if (!ret)
 268                         ret = reg_write(WINDOW_WIDTH, width);
 269                 if (!ret)
 270                         ret = reg_write(WINDOW_HEIGHT, height);
 271         } else {
 272                 if (!ret)
 273                         ret = reg_write(REDUCER_XZOOM_B, MT9M111_MAX_WIDTH);
 274                 if (!ret)
 275                         ret = reg_write(REDUCER_YZOOM_B, MT9M111_MAX_HEIGHT);
 276                 if (!ret)
 277                         ret = reg_write(REDUCER_XSIZE_B, width);
 278                 if (!ret)
 279                         ret = reg_write(REDUCER_YSIZE_B, height);
 280                 if (!ret)
 281                         ret = reg_write(REDUCER_XZOOM_A, MT9M111_MAX_WIDTH);
 282                 if (!ret)
 283                         ret = reg_write(REDUCER_YZOOM_A, MT9M111_MAX_HEIGHT);
 284                 if (!ret)
 285                         ret = reg_write(REDUCER_XSIZE_A, width);
 286                 if (!ret)
 287                         ret = reg_write(REDUCER_YSIZE_A, height);
 288         }
 289
 290         return ret;
 291 }
 292
 293 static int mt9m111_setup_pixfmt(struct soc_camera_device *icd, u16 outfmt)
 294 {
 295         struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 296         int ret;
 297
 298         ret = reg_write(OUTPUT_FORMAT_CTRL2_A, outfmt);
 299         if (!ret)
 300                 ret = reg_write(OUTPUT_FORMAT_CTRL2_B, outfmt);
 301         return ret;
 302 }
 303
 304 static int mt9m111_setfmt_bayer8(struct soc_camera_device *icd)
 305 {
 306         return mt9m111_setup_pixfmt(icd, MT9M111_OUTFMT_PROCESSED_BAYER);
 307 }
 308
 309 static int mt9m111_setfmt_bayer10(struct soc_camera_device *icd)
 310 {
 311         return mt9m111_setup_pixfmt(icd, MT9M111_OUTFMT_BYPASS_IFP);
 312 }
 313
 314 static int mt9m111_setfmt_rgb565(struct soc_camera_device *icd)
 315 {
 316         struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 317         struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
 318         int val = 0;
 319
 320         if (mt9m111->swap_rgb_red_blue)
 321                 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
 322         if (mt9m111->swap_rgb_even_odd)
 323                 val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
 324         val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565;
 325
 326         return mt9m111_setup_pixfmt(icd, val);
 327 }
 328
 329 static int mt9m111_setfmt_rgb555(struct soc_camera_device *icd)
 330 {
 331         struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 332         struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
 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 i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 347         struct mt9m111 *mt9m111 = i2c_get_clientdata(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(icd, val);
 356 }
 357
 358 static int mt9m111_enable(struct soc_camera_device *icd)
 359 {
 360         struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 361         struct soc_camera_link *icl = to_soc_camera_link(icd);
 362         struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
 363         int ret;
 364
 365         if (icl->power) {
 366                 ret = icl->power(&client->dev, 1);
 367                 if (ret < 0) {
 368                         dev_err(icd->vdev->parent,
 369                                 "Platform failed to power-on the camera.\n");
 370                         return ret;
 371                 }
 372         }
 373
 374         ret = reg_set(RESET, MT9M111_RESET_CHIP_ENABLE);
 375         if (!ret)
 376                 mt9m111->powered = 1;
 377         return ret;
 378 }
 379
 380 static int mt9m111_disable(struct soc_camera_device *icd)
 381 {
 382         struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 383         struct soc_camera_link *icl = to_soc_camera_link(icd);
 384         struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
 385         int ret;
 386
 387         ret = reg_clear(RESET, MT9M111_RESET_CHIP_ENABLE);
 388         if (!ret)
 389                 mt9m111->powered = 0;
 390
 391         if (icl->power)
 392                 icl->power(&client->dev, 0);
 393
 394         return ret;
 395 }
 396
 397 static int mt9m111_reset(struct soc_camera_device *icd)
 398 {
 399         struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 400         struct soc_camera_link *icl = to_soc_camera_link(icd);
 401         int ret;
 402
 403         ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
 404         if (!ret)
 405                 ret = reg_set(RESET, MT9M111_RESET_RESET_SOC);
 406         if (!ret)
 407                 ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE
 408                                 | MT9M111_RESET_RESET_SOC);
 409
 410         if (icl->reset)
 411                 icl->reset(&client->dev);
 412
 413         return ret;
 414 }
 415
 416 static int mt9m111_start_capture(struct soc_camera_device *icd)
 417 {
 418         return 0;
 419 }
 420
 421 static int mt9m111_stop_capture(struct soc_camera_device *icd)
 422 {
 423         return 0;
 424 }
 425
 426 static unsigned long mt9m111_query_bus_param(struct soc_camera_device *icd)
 427 {
 428         struct soc_camera_link *icl = to_soc_camera_link(icd);
 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 i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 445         struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
 446         int ret;
 447
 448         dev_dbg(&icd->dev, "%s left=%d, top=%d, width=%d, height=%d\n",
 449                 __func__, rect->left, rect->top, rect->width,
 450                 rect->height);
 451
 452         ret = mt9m111_setup_rect(icd, rect);
 453         if (!ret)
 454                 mt9m111->rect = *rect;
 455         return ret;
 456 }
 457
 458 static int mt9m111_set_pixfmt(struct soc_camera_device *icd, u32 pixfmt)
 459 {
 460         struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 461         struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
 462         int ret;
 463
 464         switch (pixfmt) {
 465         case V4L2_PIX_FMT_SBGGR8:
 466                 ret = mt9m111_setfmt_bayer8(icd);
 467                 break;
 468         case V4L2_PIX_FMT_SBGGR16:
 469                 ret = mt9m111_setfmt_bayer10(icd);
 470                 break;
 471         case V4L2_PIX_FMT_RGB555:
 472                 ret = mt9m111_setfmt_rgb555(icd);
 473                 break;
 474         case V4L2_PIX_FMT_RGB565:
 475                 ret = mt9m111_setfmt_rgb565(icd);
 476                 break;
 477         case V4L2_PIX_FMT_UYVY:
 478                 mt9m111->swap_yuv_y_chromas = 0;
 479                 mt9m111->swap_yuv_cb_cr = 0;
 480                 ret = mt9m111_setfmt_yuv(icd);
 481                 break;
 482         case V4L2_PIX_FMT_VYUY:
 483                 mt9m111->swap_yuv_y_chromas = 0;
 484                 mt9m111->swap_yuv_cb_cr = 1;
 485                 ret = mt9m111_setfmt_yuv(icd);
 486                 break;
 487         case V4L2_PIX_FMT_YUYV:
 488                 mt9m111->swap_yuv_y_chromas = 1;
 489                 mt9m111->swap_yuv_cb_cr = 0;
 490                 ret = mt9m111_setfmt_yuv(icd);
 491                 break;
 492         case V4L2_PIX_FMT_YVYU:
 493                 mt9m111->swap_yuv_y_chromas = 1;
 494                 mt9m111->swap_yuv_cb_cr = 1;
 495                 ret = mt9m111_setfmt_yuv(icd);
 496                 break;
 497         default:
 498                 dev_err(&icd->dev, "Pixel format not handled : %x\n", pixfmt);
 499                 ret = -EINVAL;
 500         }
 501
 502         if (!ret)
 503                 mt9m111->pixfmt = pixfmt;
 504
 505         return ret;
 506 }
 507
 508 static int mt9m111_set_fmt(struct soc_camera_device *icd,
 509                            struct v4l2_format *f)
 510 {
 511         struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 512         struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
 513         struct v4l2_pix_format *pix = &f->fmt.pix;
 514         struct v4l2_rect rect = {
 515                 .left   = mt9m111->rect.left,
 516                 .top    = mt9m111->rect.top,
 517                 .width  = pix->width,
 518                 .height = pix->height,
 519         };
 520         int ret;
 521
 522         dev_dbg(&icd->dev, "%s fmt=%x left=%d, top=%d, width=%d, height=%d\n",
 523                 __func__, pix->pixelformat, rect.left, rect.top, rect.width,
 524                 rect.height);
 525
 526         ret = mt9m111_setup_rect(icd, &rect);
 527         if (!ret)
 528                 ret = mt9m111_set_pixfmt(icd, pix->pixelformat);
 529         if (!ret)
 530                 mt9m111->rect = rect;
 531         return ret;
 532 }
 533
 534 static int mt9m111_try_fmt(struct soc_camera_device *icd,
 535                            struct v4l2_format *f)
 536 {
 537         struct v4l2_pix_format *pix = &f->fmt.pix;
 538
 539         if (pix->height > MT9M111_MAX_HEIGHT)
 540                 pix->height = MT9M111_MAX_HEIGHT;
 541         if (pix->width > MT9M111_MAX_WIDTH)
 542                 pix->width = MT9M111_MAX_WIDTH;
 543
 544         return 0;
 545 }
 546
 547 static int mt9m111_get_chip_id(struct soc_camera_device *icd,
 548                                struct v4l2_dbg_chip_ident *id)
 549 {
 550         struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 551         struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
 552
 553         if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
 554                 return -EINVAL;
 555
 556         if (id->match.addr != client->addr)
 557                 return -ENODEV;
 558
 559         id->ident       = mt9m111->model;
 560         id->revision    = 0;
 561
 562         return 0;
 563 }
 564
 565 #ifdef CONFIG_VIDEO_ADV_DEBUG
 566 static int mt9m111_get_register(struct soc_camera_device *icd,
 567                                 struct v4l2_dbg_register *reg)
 568 {
 569         struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 570         int val;
 571
 572         if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
 573                 return -EINVAL;
 574         if (reg->match.addr != client->addr)
 575                 return -ENODEV;
 576
 577         val = mt9m111_reg_read(client, reg->reg);
 578         reg->size = 2;
 579         reg->val = (u64)val;
 580
 581         if (reg->val > 0xffff)
 582                 return -EIO;
 583
 584         return 0;
 585 }
 586
 587 static int mt9m111_set_register(struct soc_camera_device *icd,
 588                                 struct v4l2_dbg_register *reg)
 589 {
 590         struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 591
 592         if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
 593                 return -EINVAL;
 594
 595         if (reg->match.addr != client->addr)
 596                 return -ENODEV;
 597
 598         if (mt9m111_reg_write(client, reg->reg, reg->val) < 0)
 599                 return -EIO;
 600
 601         return 0;
 602 }
 603 #endif
 604
 605 static const struct v4l2_queryctrl mt9m111_controls[] = {
 606         {
 607                 .id             = V4L2_CID_VFLIP,
 608                 .type           = V4L2_CTRL_TYPE_BOOLEAN,
 609                 .name           = "Flip Verticaly",
 610                 .minimum        = 0,
 611                 .maximum        = 1,
 612                 .step           = 1,
 613                 .default_value  = 0,
 614         }, {
 615                 .id             = V4L2_CID_HFLIP,
 616                 .type           = V4L2_CTRL_TYPE_BOOLEAN,
 617                 .name           = "Flip Horizontaly",
 618                 .minimum        = 0,
 619                 .maximum        = 1,
 620                 .step           = 1,
 621                 .default_value  = 0,
 622         }, {    /* gain = 1/32*val (=>gain=1 if val==32) */
 623                 .id             = V4L2_CID_GAIN,
 624                 .type           = V4L2_CTRL_TYPE_INTEGER,
 625                 .name           = "Gain",
 626                 .minimum        = 0,
 627                 .maximum        = 63 * 2 * 2,
 628                 .step           = 1,
 629                 .default_value  = 32,
 630                 .flags          = V4L2_CTRL_FLAG_SLIDER,
 631         }, {
 632                 .id             = V4L2_CID_EXPOSURE_AUTO,
 633                 .type           = V4L2_CTRL_TYPE_BOOLEAN,
 634                 .name           = "Auto Exposure",
 635                 .minimum        = 0,
 636                 .maximum        = 1,
 637                 .step           = 1,
 638                 .default_value  = 1,
 639         }
 640 };
 641
 642 static int mt9m111_get_control(struct soc_camera_device *,
 643                                struct v4l2_control *);
 644 static int mt9m111_set_control(struct soc_camera_device *,
 645                                struct v4l2_control *);
 646 static int mt9m111_resume(struct soc_camera_device *icd);
 647 static int mt9m111_init(struct soc_camera_device *icd);
 648 static int mt9m111_release(struct soc_camera_device *icd);
 649
 650 static struct soc_camera_ops mt9m111_ops = {
 651         .owner                  = THIS_MODULE,
 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(to_soc_camera_control(icd));
 676         struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
 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(to_soc_camera_control(icd));
 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(to_soc_camera_control(icd));
 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(to_soc_camera_control(icd));
 728         struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
 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(to_soc_camera_control(icd));
 745         struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
 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(to_soc_camera_control(icd));
 763         struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
 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 i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 807         struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
 808         const struct v4l2_queryctrl *qctrl;
 809         int ret;
 810
 811         qctrl = soc_camera_find_qctrl(&mt9m111_ops, ctrl->id);
 812
 813         if (!qctrl)
 814                 return -EINVAL;
 815
 816         switch (ctrl->id) {
 817         case V4L2_CID_VFLIP:
 818                 mt9m111->vflip = ctrl->value;
 819                 ret = mt9m111_set_flip(icd, ctrl->value,
 820                                         MT9M111_RMB_MIRROR_ROWS);
 821                 break;
 822         case V4L2_CID_HFLIP:
 823                 mt9m111->hflip = ctrl->value;
 824                 ret = mt9m111_set_flip(icd, ctrl->value,
 825                                         MT9M111_RMB_MIRROR_COLS);
 826                 break;
 827         case V4L2_CID_GAIN:
 828                 ret = mt9m111_set_global_gain(icd, ctrl->value);
 829                 break;
 830         case V4L2_CID_EXPOSURE_AUTO:
 831                 ret =  mt9m111_set_autoexposure(icd, ctrl->value);
 832                 break;
 833         case V4L2_CID_AUTO_WHITE_BALANCE:
 834                 ret =  mt9m111_set_autowhitebalance(icd, ctrl->value);
 835                 break;
 836         default:
 837                 ret = -EINVAL;
 838         }
 839
 840         return ret;
 841 }
 842
 843 static int mt9m111_restore_state(struct soc_camera_device *icd)
 844 {
 845         struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 846         struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
 847
 848         mt9m111_set_context(icd, mt9m111->context);
 849         mt9m111_set_pixfmt(icd, mt9m111->pixfmt);
 850         mt9m111_setup_rect(icd, &mt9m111->rect);
 851         mt9m111_set_flip(icd, mt9m111->hflip, MT9M111_RMB_MIRROR_COLS);
 852         mt9m111_set_flip(icd, mt9m111->vflip, MT9M111_RMB_MIRROR_ROWS);
 853         mt9m111_set_global_gain(icd, icd->gain);
 854         mt9m111_set_autoexposure(icd, mt9m111->autoexposure);
 855         mt9m111_set_autowhitebalance(icd, mt9m111->autowhitebalance);
 856         return 0;
 857 }
 858
 859 static int mt9m111_resume(struct soc_camera_device *icd)
 860 {
 861         struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 862         struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
 863         int ret = 0;
 864
 865         if (mt9m111->powered) {
 866                 ret = mt9m111_enable(icd);
 867                 if (!ret)
 868                         ret = mt9m111_reset(icd);
 869                 if (!ret)
 870                         ret = mt9m111_restore_state(icd);
 871         }
 872         return ret;
 873 }
 874
 875 static int mt9m111_init(struct soc_camera_device *icd)
 876 {
 877         struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
 878         struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
 879         int ret;
 880
 881         mt9m111->context = HIGHPOWER;
 882         ret = mt9m111_enable(icd);
 883         if (!ret)
 884                 ret = mt9m111_reset(icd);
 885         if (!ret)
 886                 ret = mt9m111_set_context(icd, mt9m111->context);
 887         if (!ret)
 888                 ret = mt9m111_set_autoexposure(icd, mt9m111->autoexposure);
 889         if (ret)
 890                 dev_err(&icd->dev, "mt9m11x init failed: %d\n", ret);
 891         return ret;
 892 }
 893
 894 static int mt9m111_release(struct soc_camera_device *icd)
 895 {
 896         int ret;
 897
 898         ret = mt9m111_disable(icd);
 899         if (ret < 0)
 900                 dev_err(&icd->dev, "mt9m11x release failed: %d\n", ret);
 901
 902         return ret;
 903 }
 904
 905 /*
 906  * Interface active, can use i2c. If it fails, it can indeed mean, that
 907  * this wasn't our capture interface, so, we wait for the right one
 908  */
 909 static int mt9m111_video_probe(struct soc_camera_device *icd,
 910                                struct i2c_client *client)
 911 {
 912         struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
 913         s32 data;
 914         int ret;
 915
 916         /*
 917          * We must have a parent by now. And it cannot be a wrong one.
 918          * So this entire test is completely redundant.
 919          */
 920         if (!icd->dev.parent ||
 921             to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
 922                 return -ENODEV;
 923
 924         /* Switch master clock on */
 925         ret = soc_camera_video_start(icd, &client->dev);
 926         if (ret)
 927                 goto evstart;
 928
 929         ret = mt9m111_enable(icd);
 930         if (ret)
 931                 goto ei2c;
 932         ret = mt9m111_reset(icd);
 933         if (ret)
 934                 goto ei2c;
 935
 936         data = reg_read(CHIP_VERSION);
 937
 938         switch (data) {
 939         case 0x143a: /* MT9M111 */
 940                 mt9m111->model = V4L2_IDENT_MT9M111;
 941                 break;
 942         case 0x148c: /* MT9M112 */
 943                 mt9m111->model = V4L2_IDENT_MT9M112;
 944                 break;
 945         default:
 946                 ret = -ENODEV;
 947                 dev_err(&icd->dev,
 948                         "No MT9M11x chip detected, register read %x\n", data);
 949                 goto ei2c;
 950         }
 951
 952         icd->formats = mt9m111_colour_formats;
 953         icd->num_formats = ARRAY_SIZE(mt9m111_colour_formats);
 954
 955         dev_info(&icd->dev, "Detected a MT9M11x chip ID %x\n", data);
 956
 957         mt9m111->autoexposure = 1;
 958         mt9m111->autowhitebalance = 1;
 959
 960         mt9m111->swap_rgb_even_odd = 1;
 961         mt9m111->swap_rgb_red_blue = 1;
 962
 963 ei2c:
 964         soc_camera_video_stop(icd);
 965 evstart:
 966         return ret;
 967 }
 968
 969 static int mt9m111_probe(struct i2c_client *client,
 970                          const struct i2c_device_id *did)
 971 {
 972         struct mt9m111 *mt9m111;
 973         struct soc_camera_device *icd = client->dev.platform_data;
 974         struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
 975         struct soc_camera_link *icl;
 976         int ret;
 977
 978         if (!icd) {
 979                 dev_err(&client->dev, "MT9M11x: missing soc-camera data!\n");
 980                 return -EINVAL;
 981         }
 982
 983         icl = to_soc_camera_link(icd);
 984         if (!icl) {
 985                 dev_err(&client->dev, "MT9M11x driver needs platform data\n");
 986                 return -EINVAL;
 987         }
 988
 989         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
 990                 dev_warn(&adapter->dev,
 991                          "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
 992                 return -EIO;
 993         }
 994
 995         mt9m111 = kzalloc(sizeof(struct mt9m111), GFP_KERNEL);
 996         if (!mt9m111)
 997                 return -ENOMEM;
 998
 999         i2c_set_clientdata(client, mt9m111);
1000
1001         /* Second stage probe - when a capture adapter is there */
1002         icd->ops        = &mt9m111_ops;
1003         icd->x_min      = MT9M111_MIN_DARK_COLS;
1004         icd->y_min      = MT9M111_MIN_DARK_ROWS;
1005         icd->x_current  = icd->x_min;
1006         icd->y_current  = icd->y_min;
1007         icd->width_min  = MT9M111_MIN_DARK_ROWS;
1008         icd->width_max  = MT9M111_MAX_WIDTH;
1009         icd->height_min = MT9M111_MIN_DARK_COLS;
1010         icd->height_max = MT9M111_MAX_HEIGHT;
1011         icd->y_skip_top = 0;
1012
1013         ret = mt9m111_video_probe(icd, client);
1014         if (ret) {
1015                 icd->ops = NULL;
1016                 i2c_set_clientdata(client, NULL);
1017                 kfree(mt9m111);
1018         }
1019
1020         return ret;
1021 }
1022
1023 static int mt9m111_remove(struct i2c_client *client)
1024 {
1025         struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
1026         struct soc_camera_device *icd = client->dev.platform_data;
1027
1028         icd->ops = NULL;
1029         i2c_set_clientdata(client, NULL);
1030         client->driver = NULL;
1031         kfree(mt9m111);
1032
1033         return 0;
1034 }
1035
1036 static const struct i2c_device_id mt9m111_id[] = {
1037         { "mt9m111", 0 },
1038         { }
1039 };
1040 MODULE_DEVICE_TABLE(i2c, mt9m111_id);
1041
1042 static struct i2c_driver mt9m111_i2c_driver = {
1043         .driver = {
1044                 .name = "mt9m111",
1045         },
1046         .probe          = mt9m111_probe,
1047         .remove         = mt9m111_remove,
1048         .id_table       = mt9m111_id,
1049 };
1050
1051 static int __init mt9m111_mod_init(void)
1052 {
1053         return i2c_add_driver(&mt9m111_i2c_driver);
1054 }
1055
1056 static void __exit mt9m111_mod_exit(void)
1057 {
1058         i2c_del_driver(&mt9m111_i2c_driver);
1059 }
1060
1061 module_init(mt9m111_mod_init);
1062 module_exit(mt9m111_mod_exit);
1063
1064 MODULE_DESCRIPTION("Micron MT9M111/MT9M112 Camera driver");
1065 MODULE_AUTHOR("Robert Jarzmik");
1066 MODULE_LICENSE("GPL");