drivers/media/video/mt9m111.c

   1 /*
   2  * Driver for MT9M111 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 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
  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
 132 static const struct soc_camera_data_format mt9m111_colour_formats[] = {
 133         COL_FMT("YCrYCb 8 bit", 8, V4L2_PIX_FMT_YUYV, V4L2_COLORSPACE_JPEG),
 134         RGB_FMT("RGB 565", 16, V4L2_PIX_FMT_RGB565),
 135         RGB_FMT("RGB 555", 16, V4L2_PIX_FMT_RGB555),
 136         RGB_FMT("Bayer (sRGB) 10 bit", 10, V4L2_PIX_FMT_SBGGR16),
 137         RGB_FMT("Bayer (sRGB) 8 bit", 8, V4L2_PIX_FMT_SBGGR8),
 138 };
 139
 140 enum mt9m111_context {
 141         HIGHPOWER = 0,
 142         LOWPOWER,
 143 };
 144
 145 struct mt9m111 {
 146         struct i2c_client *client;
 147         struct soc_camera_device icd;
 148         int model;      /* V4L2_IDENT_MT9M111* codes from v4l2-chip-ident.h */
 149         enum mt9m111_context context;
 150         unsigned int left, top, width, height;
 151         u32 pixfmt;
 152         unsigned char autoexposure;
 153         unsigned char datawidth;
 154         unsigned int powered:1;
 155         unsigned int hflip:1;
 156         unsigned int vflip:1;
 157         unsigned int swap_rgb_even_odd:1;
 158         unsigned int swap_rgb_red_blue:1;
 159         unsigned int swap_yuv_y_chromas:1;
 160         unsigned int swap_yuv_cb_cr:1;
 161 };
 162
 163 static int reg_page_map_set(struct i2c_client *client, const u16 reg)
 164 {
 165         int ret;
 166         u16 page;
 167         static int lastpage = -1;       /* PageMap cache value */
 168
 169         page = (reg >> 8);
 170         if (page == lastpage)
 171                 return 0;
 172         if (page > 2)
 173                 return -EINVAL;
 174
 175         ret = i2c_smbus_write_word_data(client, MT9M111_PAGE_MAP, swab16(page));
 176         if (!ret)
 177                 lastpage = page;
 178         return ret;
 179 }
 180
 181 static int mt9m111_reg_read(struct soc_camera_device *icd, const u16 reg)
 182 {
 183         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 184         struct i2c_client *client = mt9m111->client;
 185         int ret;
 186
 187         ret = reg_page_map_set(client, reg);
 188         if (!ret)
 189                 ret = swab16(i2c_smbus_read_word_data(client, (reg & 0xff)));
 190
 191         dev_dbg(&icd->dev, "read  reg.%03x -> %04x\n", reg, ret);
 192         return ret;
 193 }
 194
 195 static int mt9m111_reg_write(struct soc_camera_device *icd, const u16 reg,
 196                              const u16 data)
 197 {
 198         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 199         struct i2c_client *client = mt9m111->client;
 200         int ret;
 201
 202         ret = reg_page_map_set(client, reg);
 203         if (!ret)
 204                 ret = i2c_smbus_write_word_data(mt9m111->client, (reg & 0xff),
 205                                                 swab16(data));
 206         dev_dbg(&icd->dev, "write reg.%03x = %04x -> %d\n", reg, data, ret);
 207         return ret;
 208 }
 209
 210 static int mt9m111_reg_set(struct soc_camera_device *icd, const u16 reg,
 211                            const u16 data)
 212 {
 213         int ret;
 214
 215         ret = mt9m111_reg_read(icd, reg);
 216         if (ret >= 0)
 217                 ret = mt9m111_reg_write(icd, reg, ret | data);
 218         return ret;
 219 }
 220
 221 static int mt9m111_reg_clear(struct soc_camera_device *icd, const u16 reg,
 222                              const u16 data)
 223 {
 224         int ret;
 225
 226         ret = mt9m111_reg_read(icd, reg);
 227         return mt9m111_reg_write(icd, reg, ret & ~data);
 228 }
 229
 230 static int mt9m111_set_context(struct soc_camera_device *icd,
 231                                enum mt9m111_context ctxt)
 232 {
 233         int valB = MT9M111_CTXT_CTRL_RESTART | MT9M111_CTXT_CTRL_DEFECTCOR_B
 234                 | MT9M111_CTXT_CTRL_RESIZE_B | MT9M111_CTXT_CTRL_CTRL2_B
 235                 | MT9M111_CTXT_CTRL_GAMMA_B | MT9M111_CTXT_CTRL_READ_MODE_B
 236                 | MT9M111_CTXT_CTRL_VBLANK_SEL_B
 237                 | MT9M111_CTXT_CTRL_HBLANK_SEL_B;
 238         int valA = MT9M111_CTXT_CTRL_RESTART;
 239
 240         if (ctxt == HIGHPOWER)
 241                 return reg_write(CONTEXT_CONTROL, valB);
 242         else
 243                 return reg_write(CONTEXT_CONTROL, valA);
 244 }
 245
 246 static int mt9m111_setup_rect(struct soc_camera_device *icd)
 247 {
 248         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 249         int ret, is_raw_format;
 250         int width = mt9m111->width;
 251         int height = mt9m111->height;
 252
 253         if ((mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR8)
 254             || (mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR16))
 255                 is_raw_format = 1;
 256         else
 257                 is_raw_format = 0;
 258
 259         ret = reg_write(COLUMN_START, mt9m111->left);
 260         if (!ret)
 261                 ret = reg_write(ROW_START, mt9m111->top);
 262
 263         if (is_raw_format) {
 264                 if (!ret)
 265                         ret = reg_write(WINDOW_WIDTH, width);
 266                 if (!ret)
 267                         ret = reg_write(WINDOW_HEIGHT, height);
 268         } else {
 269                 if (!ret)
 270                         ret = reg_write(REDUCER_XZOOM_B, MT9M111_MAX_WIDTH);
 271                 if (!ret)
 272                         ret = reg_write(REDUCER_YZOOM_B, MT9M111_MAX_HEIGHT);
 273                 if (!ret)
 274                         ret = reg_write(REDUCER_XSIZE_B, width);
 275                 if (!ret)
 276                         ret = reg_write(REDUCER_YSIZE_B, height);
 277                 if (!ret)
 278                         ret = reg_write(REDUCER_XZOOM_A, MT9M111_MAX_WIDTH);
 279                 if (!ret)
 280                         ret = reg_write(REDUCER_YZOOM_A, MT9M111_MAX_HEIGHT);
 281                 if (!ret)
 282                         ret = reg_write(REDUCER_XSIZE_A, width);
 283                 if (!ret)
 284                         ret = reg_write(REDUCER_YSIZE_A, height);
 285         }
 286
 287         return ret;
 288 }
 289
 290 static int mt9m111_setup_pixfmt(struct soc_camera_device *icd, u16 outfmt)
 291 {
 292         int ret;
 293
 294         ret = reg_write(OUTPUT_FORMAT_CTRL2_A, outfmt);
 295         if (!ret)
 296                 ret = reg_write(OUTPUT_FORMAT_CTRL2_B, outfmt);
 297         return ret;
 298 }
 299
 300 static int mt9m111_setfmt_bayer8(struct soc_camera_device *icd)
 301 {
 302         return mt9m111_setup_pixfmt(icd, MT9M111_OUTFMT_PROCESSED_BAYER);
 303 }
 304
 305 static int mt9m111_setfmt_bayer10(struct soc_camera_device *icd)
 306 {
 307         return mt9m111_setup_pixfmt(icd, MT9M111_OUTFMT_BYPASS_IFP);
 308 }
 309
 310 static int mt9m111_setfmt_rgb565(struct soc_camera_device *icd)
 311 {
 312         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 313         int val = 0;
 314
 315         if (mt9m111->swap_rgb_red_blue)
 316                 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
 317         if (mt9m111->swap_rgb_even_odd)
 318                 val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
 319         val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565;
 320
 321         return mt9m111_setup_pixfmt(icd, val);
 322 }
 323
 324 static int mt9m111_setfmt_rgb555(struct soc_camera_device *icd)
 325 {
 326         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 327         int val = 0;
 328
 329         if (mt9m111->swap_rgb_red_blue)
 330                 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
 331         if (mt9m111->swap_rgb_even_odd)
 332                 val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
 333         val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555;
 334
 335         return mt9m111_setup_pixfmt(icd, val);
 336 }
 337
 338 static int mt9m111_setfmt_yuv(struct soc_camera_device *icd)
 339 {
 340         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 341         int val = 0;
 342
 343         if (mt9m111->swap_yuv_cb_cr)
 344                 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
 345         if (mt9m111->swap_yuv_y_chromas)
 346                 val |= MT9M111_OUTFMT_SWAP_YCbCr_C_Y;
 347
 348         return mt9m111_setup_pixfmt(icd, val);
 349 }
 350
 351 static int mt9m111_enable(struct soc_camera_device *icd)
 352 {
 353         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 354         struct soc_camera_link *icl = mt9m111->client->dev.platform_data;
 355         int ret;
 356
 357         if (icl->power) {
 358                 ret = icl->power(&mt9m111->client->dev, 1);
 359                 if (ret < 0) {
 360                         dev_err(icd->vdev->parent,
 361                                 "Platform failed to power-on the camera.\n");
 362                         return ret;
 363                 }
 364         }
 365
 366         ret = reg_set(RESET, MT9M111_RESET_CHIP_ENABLE);
 367         if (!ret)
 368                 mt9m111->powered = 1;
 369         return ret;
 370 }
 371
 372 static int mt9m111_disable(struct soc_camera_device *icd)
 373 {
 374         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 375         struct soc_camera_link *icl = mt9m111->client->dev.platform_data;
 376         int ret;
 377
 378         ret = reg_clear(RESET, MT9M111_RESET_CHIP_ENABLE);
 379         if (!ret)
 380                 mt9m111->powered = 0;
 381
 382         if (icl->power)
 383                 icl->power(&mt9m111->client->dev, 0);
 384
 385         return ret;
 386 }
 387
 388 static int mt9m111_reset(struct soc_camera_device *icd)
 389 {
 390         int ret;
 391
 392         ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
 393         if (!ret)
 394                 ret = reg_set(RESET, MT9M111_RESET_RESET_SOC);
 395         if (!ret)
 396                 ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE
 397                                 | MT9M111_RESET_RESET_SOC);
 398         return ret;
 399 }
 400
 401 static int mt9m111_start_capture(struct soc_camera_device *icd)
 402 {
 403         return 0;
 404 }
 405
 406 static int mt9m111_stop_capture(struct soc_camera_device *icd)
 407 {
 408         return 0;
 409 }
 410
 411 static unsigned long mt9m111_query_bus_param(struct soc_camera_device *icd)
 412 {
 413         return SOCAM_MASTER | SOCAM_PCLK_SAMPLE_RISING |
 414                 SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH |
 415                 SOCAM_DATAWIDTH_8;
 416 }
 417
 418 static int mt9m111_set_bus_param(struct soc_camera_device *icd, unsigned long f)
 419 {
 420         return 0;
 421 }
 422
 423 static int mt9m111_set_pixfmt(struct soc_camera_device *icd, u32 pixfmt)
 424 {
 425         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 426         int ret;
 427
 428         switch (pixfmt) {
 429         case V4L2_PIX_FMT_SBGGR8:
 430                 ret = mt9m111_setfmt_bayer8(icd);
 431                 break;
 432         case V4L2_PIX_FMT_SBGGR16:
 433                 ret = mt9m111_setfmt_bayer10(icd);
 434                 break;
 435         case V4L2_PIX_FMT_RGB555:
 436                 ret = mt9m111_setfmt_rgb555(icd);
 437                 break;
 438         case V4L2_PIX_FMT_RGB565:
 439                 ret = mt9m111_setfmt_rgb565(icd);
 440                 break;
 441         case V4L2_PIX_FMT_YUYV:
 442                 ret = mt9m111_setfmt_yuv(icd);
 443                 break;
 444         default:
 445                 dev_err(&icd->dev, "Pixel format not handled : %x\n", pixfmt);
 446                 ret = -EINVAL;
 447         }
 448
 449         if (!ret)
 450                 mt9m111->pixfmt = pixfmt;
 451
 452         return ret;
 453 }
 454
 455 static int mt9m111_set_fmt_cap(struct soc_camera_device *icd,
 456                                __u32 pixfmt, struct v4l2_rect *rect)
 457 {
 458         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 459         int ret;
 460
 461         mt9m111->left = rect->left;
 462         mt9m111->top = rect->top;
 463         mt9m111->width = rect->width;
 464         mt9m111->height = rect->height;
 465
 466         dev_dbg(&icd->dev, "%s fmt=%x left=%d, top=%d, width=%d, height=%d\n",
 467                 __func__, pixfmt, mt9m111->left, mt9m111->top, mt9m111->width,
 468                 mt9m111->height);
 469
 470         ret = mt9m111_setup_rect(icd);
 471         if (!ret)
 472                 ret = mt9m111_set_pixfmt(icd, pixfmt);
 473         return ret;
 474 }
 475
 476 static int mt9m111_try_fmt_cap(struct soc_camera_device *icd,
 477                                struct v4l2_format *f)
 478 {
 479         if (f->fmt.pix.height > MT9M111_MAX_HEIGHT)
 480                 f->fmt.pix.height = MT9M111_MAX_HEIGHT;
 481         if (f->fmt.pix.width > MT9M111_MAX_WIDTH)
 482                 f->fmt.pix.width = MT9M111_MAX_WIDTH;
 483
 484         return 0;
 485 }
 486
 487 static int mt9m111_get_chip_id(struct soc_camera_device *icd,
 488                                struct v4l2_chip_ident *id)
 489 {
 490         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 491
 492         if (id->match_type != V4L2_CHIP_MATCH_I2C_ADDR)
 493                 return -EINVAL;
 494
 495         if (id->match_chip != mt9m111->client->addr)
 496                 return -ENODEV;
 497
 498         id->ident       = mt9m111->model;
 499         id->revision    = 0;
 500
 501         return 0;
 502 }
 503
 504 #ifdef CONFIG_VIDEO_ADV_DEBUG
 505 static int mt9m111_get_register(struct soc_camera_device *icd,
 506                                 struct v4l2_register *reg)
 507 {
 508         int val;
 509
 510         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 511
 512         if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
 513                 return -EINVAL;
 514         if (reg->match_chip != mt9m111->client->addr)
 515                 return -ENODEV;
 516
 517         val = mt9m111_reg_read(icd, reg->reg);
 518         reg->val = (u64)val;
 519
 520         if (reg->val > 0xffff)
 521                 return -EIO;
 522
 523         return 0;
 524 }
 525
 526 static int mt9m111_set_register(struct soc_camera_device *icd,
 527                                 struct v4l2_register *reg)
 528 {
 529         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 530
 531         if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
 532                 return -EINVAL;
 533
 534         if (reg->match_chip != mt9m111->client->addr)
 535                 return -ENODEV;
 536
 537         if (mt9m111_reg_write(icd, reg->reg, reg->val) < 0)
 538                 return -EIO;
 539
 540         return 0;
 541 }
 542 #endif
 543
 544 static const struct v4l2_queryctrl mt9m111_controls[] = {
 545         {
 546                 .id             = V4L2_CID_VFLIP,
 547                 .type           = V4L2_CTRL_TYPE_BOOLEAN,
 548                 .name           = "Flip Verticaly",
 549                 .minimum        = 0,
 550                 .maximum        = 1,
 551                 .step           = 1,
 552                 .default_value  = 0,
 553         }, {
 554                 .id             = V4L2_CID_HFLIP,
 555                 .type           = V4L2_CTRL_TYPE_BOOLEAN,
 556                 .name           = "Flip Horizontaly",
 557                 .minimum        = 0,
 558                 .maximum        = 1,
 559                 .step           = 1,
 560                 .default_value  = 0,
 561         }, {    /* gain = 1/32*val (=>gain=1 if val==32) */
 562                 .id             = V4L2_CID_GAIN,
 563                 .type           = V4L2_CTRL_TYPE_INTEGER,
 564                 .name           = "Gain",
 565                 .minimum        = 0,
 566                 .maximum        = 63 * 2 * 2,
 567                 .step           = 1,
 568                 .default_value  = 32,
 569                 .flags          = V4L2_CTRL_FLAG_SLIDER,
 570         }, {
 571                 .id             = V4L2_CID_EXPOSURE_AUTO,
 572                 .type           = V4L2_CTRL_TYPE_BOOLEAN,
 573                 .name           = "Auto Exposure",
 574                 .minimum        = 0,
 575                 .maximum        = 1,
 576                 .step           = 1,
 577                 .default_value  = 1,
 578         }
 579 };
 580
 581 static int mt9m111_video_probe(struct soc_camera_device *);
 582 static void mt9m111_video_remove(struct soc_camera_device *);
 583 static int mt9m111_get_control(struct soc_camera_device *,
 584                                struct v4l2_control *);
 585 static int mt9m111_set_control(struct soc_camera_device *,
 586                                struct v4l2_control *);
 587 static int mt9m111_resume(struct soc_camera_device *icd);
 588 static int mt9m111_init(struct soc_camera_device *icd);
 589 static int mt9m111_release(struct soc_camera_device *icd);
 590
 591 static struct soc_camera_ops mt9m111_ops = {
 592         .owner                  = THIS_MODULE,
 593         .probe                  = mt9m111_video_probe,
 594         .remove                 = mt9m111_video_remove,
 595         .init                   = mt9m111_init,
 596         .resume                 = mt9m111_resume,
 597         .release                = mt9m111_release,
 598         .start_capture          = mt9m111_start_capture,
 599         .stop_capture           = mt9m111_stop_capture,
 600         .set_fmt_cap            = mt9m111_set_fmt_cap,
 601         .try_fmt_cap            = mt9m111_try_fmt_cap,
 602         .query_bus_param        = mt9m111_query_bus_param,
 603         .set_bus_param          = mt9m111_set_bus_param,
 604         .controls               = mt9m111_controls,
 605         .num_controls           = ARRAY_SIZE(mt9m111_controls),
 606         .get_control            = mt9m111_get_control,
 607         .set_control            = mt9m111_set_control,
 608         .get_chip_id            = mt9m111_get_chip_id,
 609 #ifdef CONFIG_VIDEO_ADV_DEBUG
 610         .get_register           = mt9m111_get_register,
 611         .set_register           = mt9m111_set_register,
 612 #endif
 613 };
 614
 615 static int mt9m111_set_flip(struct soc_camera_device *icd, int flip, int mask)
 616 {
 617         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 618         int ret;
 619
 620         if (mt9m111->context == HIGHPOWER) {
 621                 if (flip)
 622                         ret = reg_set(READ_MODE_B, mask);
 623                 else
 624                         ret = reg_clear(READ_MODE_B, mask);
 625         } else {
 626                 if (flip)
 627                         ret = reg_set(READ_MODE_A, mask);
 628                 else
 629                         ret = reg_clear(READ_MODE_A, mask);
 630         }
 631
 632         return ret;
 633 }
 634
 635 static int mt9m111_get_global_gain(struct soc_camera_device *icd)
 636 {
 637         unsigned int data, gain;
 638
 639         data = reg_read(GLOBAL_GAIN);
 640         if (data >= 0)
 641                 gain = ((data & (1 << 10)) * 2)
 642                         | ((data & (1 << 9)) * 2)
 643                         | (data & 0x2f);
 644         else
 645                 gain = data;
 646
 647         return gain;
 648 }
 649 static int mt9m111_set_global_gain(struct soc_camera_device *icd, int gain)
 650 {
 651         u16 val;
 652
 653         if (gain > 63 * 2 * 2)
 654                 return -EINVAL;
 655
 656         icd->gain = gain;
 657         if ((gain >= 64 * 2) && (gain < 63 * 2 * 2))
 658                 val = (1 << 10) | (1 << 9) | (gain / 4);
 659         else if ((gain >= 64) && (gain < 64 * 2))
 660                 val = (1 << 9) | (gain / 2);
 661         else
 662                 val = gain;
 663
 664         return reg_write(GLOBAL_GAIN, val);
 665 }
 666
 667 static int mt9m111_set_autoexposure(struct soc_camera_device *icd, int on)
 668 {
 669         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 670         int ret;
 671
 672         if (on)
 673                 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
 674         else
 675                 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
 676
 677         if (!ret)
 678                 mt9m111->autoexposure = on;
 679
 680         return ret;
 681 }
 682 static int mt9m111_get_control(struct soc_camera_device *icd,
 683                                struct v4l2_control *ctrl)
 684 {
 685         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 686         int data;
 687
 688         switch (ctrl->id) {
 689         case V4L2_CID_VFLIP:
 690                 if (mt9m111->context == HIGHPOWER)
 691                         data = reg_read(READ_MODE_B);
 692                 else
 693                         data = reg_read(READ_MODE_A);
 694
 695                 if (data < 0)
 696                         return -EIO;
 697                 ctrl->value = !!(data & MT9M111_RMB_MIRROR_ROWS);
 698                 break;
 699         case V4L2_CID_HFLIP:
 700                 if (mt9m111->context == HIGHPOWER)
 701                         data = reg_read(READ_MODE_B);
 702                 else
 703                         data = reg_read(READ_MODE_A);
 704
 705                 if (data < 0)
 706                         return -EIO;
 707                 ctrl->value = !!(data & MT9M111_RMB_MIRROR_COLS);
 708                 break;
 709         case V4L2_CID_GAIN:
 710                 data = mt9m111_get_global_gain(icd);
 711                 if (data < 0)
 712                         return data;
 713                 ctrl->value = data;
 714                 break;
 715         case V4L2_CID_EXPOSURE_AUTO:
 716                 ctrl->value = mt9m111->autoexposure;
 717                 break;
 718         }
 719         return 0;
 720 }
 721
 722 static int mt9m111_set_control(struct soc_camera_device *icd,
 723                                struct v4l2_control *ctrl)
 724 {
 725         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 726         const struct v4l2_queryctrl *qctrl;
 727         int ret;
 728
 729         qctrl = soc_camera_find_qctrl(&mt9m111_ops, ctrl->id);
 730
 731         if (!qctrl)
 732                 return -EINVAL;
 733
 734         switch (ctrl->id) {
 735         case V4L2_CID_VFLIP:
 736                 mt9m111->vflip = ctrl->value;
 737                 ret = mt9m111_set_flip(icd, ctrl->value,
 738                                         MT9M111_RMB_MIRROR_ROWS);
 739                 break;
 740         case V4L2_CID_HFLIP:
 741                 mt9m111->hflip = ctrl->value;
 742                 ret = mt9m111_set_flip(icd, ctrl->value,
 743                                         MT9M111_RMB_MIRROR_COLS);
 744                 break;
 745         case V4L2_CID_GAIN:
 746                 ret = mt9m111_set_global_gain(icd, ctrl->value);
 747                 break;
 748         case V4L2_CID_EXPOSURE_AUTO:
 749                 ret =  mt9m111_set_autoexposure(icd, ctrl->value);
 750                 break;
 751         default:
 752                 ret = -EINVAL;
 753         }
 754
 755         return ret;
 756 }
 757
 758 static int mt9m111_restore_state(struct soc_camera_device *icd)
 759 {
 760         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 761
 762         mt9m111_set_context(icd, mt9m111->context);
 763         mt9m111_set_pixfmt(icd, mt9m111->pixfmt);
 764         mt9m111_setup_rect(icd);
 765         mt9m111_set_flip(icd, mt9m111->hflip, MT9M111_RMB_MIRROR_COLS);
 766         mt9m111_set_flip(icd, mt9m111->vflip, MT9M111_RMB_MIRROR_ROWS);
 767         mt9m111_set_global_gain(icd, icd->gain);
 768         mt9m111_set_autoexposure(icd, mt9m111->autoexposure);
 769         return 0;
 770 }
 771
 772 static int mt9m111_resume(struct soc_camera_device *icd)
 773 {
 774         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 775         int ret = 0;
 776
 777         if (mt9m111->powered) {
 778                 ret = mt9m111_enable(icd);
 779                 if (!ret)
 780                         ret = mt9m111_reset(icd);
 781                 if (!ret)
 782                         ret = mt9m111_restore_state(icd);
 783         }
 784         return ret;
 785 }
 786
 787 static int mt9m111_init(struct soc_camera_device *icd)
 788 {
 789         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 790         int ret;
 791
 792         mt9m111->context = HIGHPOWER;
 793         ret = mt9m111_enable(icd);
 794         if (!ret)
 795                 ret = mt9m111_reset(icd);
 796         if (!ret)
 797                 ret = mt9m111_set_context(icd, mt9m111->context);
 798         if (!ret)
 799                 ret = mt9m111_set_autoexposure(icd, mt9m111->autoexposure);
 800         if (ret)
 801                 dev_err(&icd->dev, "mt9m111 init failed: %d\n", ret);
 802         return ret;
 803 }
 804
 805 static int mt9m111_release(struct soc_camera_device *icd)
 806 {
 807         int ret;
 808
 809         ret = mt9m111_disable(icd);
 810         if (ret < 0)
 811                 dev_err(&icd->dev, "mt9m111 release failed: %d\n", ret);
 812
 813         return ret;
 814 }
 815
 816 /*
 817  * Interface active, can use i2c. If it fails, it can indeed mean, that
 818  * this wasn't our capture interface, so, we wait for the right one
 819  */
 820 static int mt9m111_video_probe(struct soc_camera_device *icd)
 821 {
 822         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 823         s32 data;
 824         int ret;
 825
 826         /*
 827          * We must have a parent by now. And it cannot be a wrong one.
 828          * So this entire test is completely redundant.
 829          */
 830         if (!icd->dev.parent ||
 831             to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
 832                 return -ENODEV;
 833
 834         ret = mt9m111_enable(icd);
 835         if (ret)
 836                 goto ei2c;
 837         ret = mt9m111_reset(icd);
 838         if (ret)
 839                 goto ei2c;
 840
 841         data = reg_read(CHIP_VERSION);
 842
 843         switch (data) {
 844         case 0x143a:
 845                 mt9m111->model = V4L2_IDENT_MT9M111;
 846                 icd->formats = mt9m111_colour_formats;
 847                 icd->num_formats = ARRAY_SIZE(mt9m111_colour_formats);
 848                 break;
 849         default:
 850                 ret = -ENODEV;
 851                 dev_err(&icd->dev,
 852                         "No MT9M111 chip detected, register read %x\n", data);
 853                 goto ei2c;
 854         }
 855
 856         dev_info(&icd->dev, "Detected a MT9M111 chip ID 0x143a\n");
 857
 858         ret = soc_camera_video_start(icd);
 859         if (ret)
 860                 goto eisis;
 861
 862         mt9m111->autoexposure = 1;
 863
 864         mt9m111->swap_rgb_even_odd = 1;
 865         mt9m111->swap_rgb_red_blue = 1;
 866
 867         return 0;
 868 eisis:
 869 ei2c:
 870         return ret;
 871 }
 872
 873 static void mt9m111_video_remove(struct soc_camera_device *icd)
 874 {
 875         struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
 876
 877         dev_dbg(&icd->dev, "Video %x removed: %p, %p\n", mt9m111->client->addr,
 878                 mt9m111->icd.dev.parent, mt9m111->icd.vdev);
 879         soc_camera_video_stop(&mt9m111->icd);
 880 }
 881
 882 static int mt9m111_probe(struct i2c_client *client,
 883                          const struct i2c_device_id *did)
 884 {
 885         struct mt9m111 *mt9m111;
 886         struct soc_camera_device *icd;
 887         struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
 888         struct soc_camera_link *icl = client->dev.platform_data;
 889         int ret;
 890
 891         if (!icl) {
 892                 dev_err(&client->dev, "MT9M111 driver needs platform data\n");
 893                 return -EINVAL;
 894         }
 895
 896         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
 897                 dev_warn(&adapter->dev,
 898                          "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
 899                 return -EIO;
 900         }
 901
 902         mt9m111 = kzalloc(sizeof(struct mt9m111), GFP_KERNEL);
 903         if (!mt9m111)
 904                 return -ENOMEM;
 905
 906         mt9m111->client = client;
 907         i2c_set_clientdata(client, mt9m111);
 908
 909         /* Second stage probe - when a capture adapter is there */
 910         icd             = &mt9m111->icd;
 911         icd->ops        = &mt9m111_ops;
 912         icd->control    = &client->dev;
 913         icd->x_min      = MT9M111_MIN_DARK_COLS;
 914         icd->y_min      = MT9M111_MIN_DARK_ROWS;
 915         icd->x_current  = icd->x_min;
 916         icd->y_current  = icd->y_min;
 917         icd->width_min  = MT9M111_MIN_DARK_ROWS;
 918         icd->width_max  = MT9M111_MAX_WIDTH;
 919         icd->height_min = MT9M111_MIN_DARK_COLS;
 920         icd->height_max = MT9M111_MAX_HEIGHT;
 921         icd->y_skip_top = 0;
 922         icd->iface      = icl->bus_id;
 923
 924         ret = soc_camera_device_register(icd);
 925         if (ret)
 926                 goto eisdr;
 927         return 0;
 928
 929 eisdr:
 930         kfree(mt9m111);
 931         return ret;
 932 }
 933
 934 static int mt9m111_remove(struct i2c_client *client)
 935 {
 936         struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
 937         soc_camera_device_unregister(&mt9m111->icd);
 938         kfree(mt9m111);
 939
 940         return 0;
 941 }
 942
 943 static const struct i2c_device_id mt9m111_id[] = {
 944         { "mt9m111", 0 },
 945         { }
 946 };
 947 MODULE_DEVICE_TABLE(i2c, mt9m111_id);
 948
 949 static struct i2c_driver mt9m111_i2c_driver = {
 950         .driver = {
 951                 .name = "mt9m111",
 952         },
 953         .probe          = mt9m111_probe,
 954         .remove         = mt9m111_remove,
 955         .id_table       = mt9m111_id,
 956 };
 957
 958 static int __init mt9m111_mod_init(void)
 959 {
 960         return i2c_add_driver(&mt9m111_i2c_driver);
 961 }
 962
 963 static void __exit mt9m111_mod_exit(void)
 964 {
 965         i2c_del_driver(&mt9m111_i2c_driver);
 966 }
 967
 968 module_init(mt9m111_mod_init);
 969 module_exit(mt9m111_mod_exit);
 970
 971 MODULE_DESCRIPTION("Micron MT9M111 Camera driver");
 972 MODULE_AUTHOR("Robert Jarzmik");
 973 MODULE_LICENSE("GPL");