drivers/media/usb/gspca/m5602/m5602_mt9m111.c

   1 /*
   2  * Driver for the mt9m111 sensor
   3  *
   4  * Copyright (C) 2008 Erik Andrén
   5  * Copyright (C) 2007 Ilyes Gouta. Based on the m5603x Linux Driver Project.
   6  * Copyright (C) 2005 m5603x Linux Driver Project <m5602@x3ng.com.br>
   7  *
   8  * Portions of code to USB interface and ALi driver software,
   9  * Copyright (c) 2006 Willem Duinker
  10  * v4l2 interface modeled after the V4L2 driver
  11  * for SN9C10x PC Camera Controllers
  12  *
  13  * This program is free software; you can redistribute it and/or
  14  * modify it under the terms of the GNU General Public License as
  15  * published by the Free Software Foundation, version 2.
  16  *
  17  */
  18
  19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  20
  21 #include "m5602_mt9m111.h"
  22
  23 static int mt9m111_s_ctrl(struct v4l2_ctrl *ctrl);
  24 static void mt9m111_dump_registers(struct sd *sd);
  25
  26 static const unsigned char preinit_mt9m111[][4] = {
  27         {BRIDGE, M5602_XB_MCU_CLK_DIV, 0x02, 0x00},
  28         {BRIDGE, M5602_XB_MCU_CLK_CTRL, 0xb0, 0x00},
  29         {BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00, 0x00},
  30         {BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0, 0x00},
  31         {BRIDGE, M5602_XB_SENSOR_TYPE, 0x0d, 0x00},
  32         {BRIDGE, M5602_XB_SENSOR_CTRL, 0x00, 0x00},
  33         {BRIDGE, M5602_XB_ADC_CTRL, 0xc0, 0x00},
  34         {BRIDGE, M5602_XB_SENSOR_TYPE, 0x09, 0x00},
  35
  36         {SENSOR, MT9M111_PAGE_MAP, 0x00, 0x00},
  37         {SENSOR, MT9M111_SC_RESET,
  38                 MT9M111_RESET |
  39                 MT9M111_RESTART |
  40                 MT9M111_ANALOG_STANDBY |
  41                 MT9M111_CHIP_DISABLE,
  42                 MT9M111_SHOW_BAD_FRAMES |
  43                 MT9M111_RESTART_BAD_FRAMES |
  44                 MT9M111_SYNCHRONIZE_CHANGES},
  45
  46         {BRIDGE, M5602_XB_GPIO_DIR, 0x05, 0x00},
  47         {BRIDGE, M5602_XB_GPIO_DAT, 0x04, 0x00},
  48         {BRIDGE, M5602_XB_GPIO_EN_H, 0x3e, 0x00},
  49         {BRIDGE, M5602_XB_GPIO_DIR_H, 0x3e, 0x00},
  50         {BRIDGE, M5602_XB_GPIO_DAT_H, 0x02, 0x00},
  51         {BRIDGE, M5602_XB_GPIO_EN_L, 0xff, 0x00},
  52         {BRIDGE, M5602_XB_GPIO_DIR_L, 0xff, 0x00},
  53         {BRIDGE, M5602_XB_GPIO_DAT_L, 0x00, 0x00},
  54
  55         {BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00, 0x00},
  56         {BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0, 0x00},
  57         {BRIDGE, M5602_XB_GPIO_DIR, 0x07, 0x00},
  58         {BRIDGE, M5602_XB_GPIO_DAT, 0x0b, 0x00},
  59         {BRIDGE, M5602_XB_GPIO_EN_H, 0x06, 0x00},
  60         {BRIDGE, M5602_XB_GPIO_EN_L, 0x00, 0x00},
  61
  62         {BRIDGE, M5602_XB_I2C_CLK_DIV, 0x0a, 0x00}
  63 };
  64
  65 static const unsigned char init_mt9m111[][4] = {
  66         {BRIDGE, M5602_XB_MCU_CLK_DIV, 0x02, 0x00},
  67         {BRIDGE, M5602_XB_MCU_CLK_CTRL, 0xb0, 0x00},
  68         {BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00, 0x00},
  69         {BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0, 0x00},
  70         {BRIDGE, M5602_XB_ADC_CTRL, 0xc0, 0x00},
  71         {BRIDGE, M5602_XB_SENSOR_TYPE, 0x09, 0x00},
  72
  73         {BRIDGE, M5602_XB_GPIO_EN_H, 0x06, 0x00},
  74         {BRIDGE, M5602_XB_GPIO_EN_L, 0x00, 0x00},
  75         {BRIDGE, M5602_XB_GPIO_DAT, 0x04, 0x00},
  76         {BRIDGE, M5602_XB_GPIO_DIR_H, 0x3e, 0x00},
  77         {BRIDGE, M5602_XB_GPIO_DIR_L, 0xff, 0x00},
  78         {BRIDGE, M5602_XB_GPIO_DAT_H, 0x02, 0x00},
  79         {BRIDGE, M5602_XB_GPIO_DAT_L, 0x00, 0x00},
  80         {BRIDGE, M5602_XB_GPIO_DIR, 0x07, 0x00},
  81         {BRIDGE, M5602_XB_GPIO_DAT, 0x0b, 0x00},
  82         {BRIDGE, M5602_XB_I2C_CLK_DIV, 0x0a, 0x00},
  83
  84         {SENSOR, MT9M111_SC_RESET, 0x00, 0x29},
  85         {SENSOR, MT9M111_PAGE_MAP, 0x00, 0x00},
  86         {SENSOR, MT9M111_SC_RESET, 0x00, 0x08},
  87         {SENSOR, MT9M111_PAGE_MAP, 0x00, 0x01},
  88         {SENSOR, MT9M111_CP_OPERATING_MODE_CTL, 0x00,
  89                         MT9M111_CP_OPERATING_MODE_CTL},
  90         {SENSOR, MT9M111_CP_LENS_CORRECTION_1, 0x04, 0x2a},
  91         {SENSOR, MT9M111_CP_DEFECT_CORR_CONTEXT_A, 0x00,
  92                                 MT9M111_2D_DEFECT_CORRECTION_ENABLE},
  93         {SENSOR, MT9M111_CP_DEFECT_CORR_CONTEXT_B, 0x00,
  94                                 MT9M111_2D_DEFECT_CORRECTION_ENABLE},
  95         {SENSOR, MT9M111_CP_LUMA_OFFSET, 0x00, 0x00},
  96         {SENSOR, MT9M111_CP_LUMA_CLIP, 0xff, 0x00},
  97         {SENSOR, MT9M111_CP_OUTPUT_FORMAT_CTL2_CONTEXT_A, 0x14, 0x00},
  98         {SENSOR, MT9M111_CP_OUTPUT_FORMAT_CTL2_CONTEXT_B, 0x14, 0x00},
  99         {SENSOR, 0xcd, 0x00, 0x0e},
 100         {SENSOR, 0xd0, 0x00, 0x40},
 101
 102         {SENSOR, MT9M111_PAGE_MAP, 0x00, 0x02},
 103         {SENSOR, MT9M111_CC_AUTO_EXPOSURE_PARAMETER_18, 0x00, 0x00},
 104         {SENSOR, MT9M111_CC_AWB_PARAMETER_7, 0xef, 0x03},
 105
 106         {SENSOR, MT9M111_PAGE_MAP, 0x00, 0x00},
 107         {SENSOR, 0x33, 0x03, 0x49},
 108         {SENSOR, 0x34, 0xc0, 0x19},
 109         {SENSOR, 0x3f, 0x20, 0x20},
 110         {SENSOR, 0x40, 0x20, 0x20},
 111         {SENSOR, 0x5a, 0xc0, 0x0a},
 112         {SENSOR, 0x70, 0x7b, 0x0a},
 113         {SENSOR, 0x71, 0xff, 0x00},
 114         {SENSOR, 0x72, 0x19, 0x0e},
 115         {SENSOR, 0x73, 0x18, 0x0f},
 116         {SENSOR, 0x74, 0x57, 0x32},
 117         {SENSOR, 0x75, 0x56, 0x34},
 118         {SENSOR, 0x76, 0x73, 0x35},
 119         {SENSOR, 0x77, 0x30, 0x12},
 120         {SENSOR, 0x78, 0x79, 0x02},
 121         {SENSOR, 0x79, 0x75, 0x06},
 122         {SENSOR, 0x7a, 0x77, 0x0a},
 123         {SENSOR, 0x7b, 0x78, 0x09},
 124         {SENSOR, 0x7c, 0x7d, 0x06},
 125         {SENSOR, 0x7d, 0x31, 0x10},
 126         {SENSOR, 0x7e, 0x00, 0x7e},
 127         {SENSOR, 0x80, 0x59, 0x04},
 128         {SENSOR, 0x81, 0x59, 0x04},
 129         {SENSOR, 0x82, 0x57, 0x0a},
 130         {SENSOR, 0x83, 0x58, 0x0b},
 131         {SENSOR, 0x84, 0x47, 0x0c},
 132         {SENSOR, 0x85, 0x48, 0x0e},
 133         {SENSOR, 0x86, 0x5b, 0x02},
 134         {SENSOR, 0x87, 0x00, 0x5c},
 135         {SENSOR, MT9M111_CONTEXT_CONTROL, 0x00, MT9M111_SEL_CONTEXT_B},
 136         {SENSOR, 0x60, 0x00, 0x80},
 137         {SENSOR, 0x61, 0x00, 0x00},
 138         {SENSOR, 0x62, 0x00, 0x00},
 139         {SENSOR, 0x63, 0x00, 0x00},
 140         {SENSOR, 0x64, 0x00, 0x00},
 141
 142         {SENSOR, MT9M111_SC_ROWSTART, 0x00, 0x0d}, /* 13 */
 143         {SENSOR, MT9M111_SC_COLSTART, 0x00, 0x12}, /* 18 */
 144         {SENSOR, MT9M111_SC_WINDOW_HEIGHT, 0x04, 0x00}, /* 1024 */
 145         {SENSOR, MT9M111_SC_WINDOW_WIDTH, 0x05, 0x10}, /* 1296 */
 146         {SENSOR, MT9M111_SC_HBLANK_CONTEXT_B, 0x01, 0x60}, /* 352 */
 147         {SENSOR, MT9M111_SC_VBLANK_CONTEXT_B, 0x00, 0x11}, /* 17 */
 148         {SENSOR, MT9M111_SC_HBLANK_CONTEXT_A, 0x01, 0x60}, /* 352 */
 149         {SENSOR, MT9M111_SC_VBLANK_CONTEXT_A, 0x00, 0x11}, /* 17 */
 150         {SENSOR, MT9M111_SC_R_MODE_CONTEXT_A, 0x01, 0x0f}, /* 271 */
 151         {SENSOR, 0x30, 0x04, 0x00},
 152         /* Set number of blank rows chosen to 400 */
 153         {SENSOR, MT9M111_SC_SHUTTER_WIDTH, 0x01, 0x90},
 154 };
 155
 156 static const unsigned char start_mt9m111[][4] = {
 157         {BRIDGE, M5602_XB_SEN_CLK_DIV, 0x06, 0x00},
 158         {BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0, 0x00},
 159         {BRIDGE, M5602_XB_ADC_CTRL, 0xc0, 0x00},
 160         {BRIDGE, M5602_XB_SENSOR_TYPE, 0x09, 0x00},
 161         {BRIDGE, M5602_XB_LINE_OF_FRAME_H, 0x81, 0x00},
 162         {BRIDGE, M5602_XB_PIX_OF_LINE_H, 0x82, 0x00},
 163         {BRIDGE, M5602_XB_SIG_INI, 0x01, 0x00},
 164         {BRIDGE, M5602_XB_VSYNC_PARA, 0x00, 0x00},
 165         {BRIDGE, M5602_XB_VSYNC_PARA, 0x00, 0x00},
 166         {BRIDGE, M5602_XB_VSYNC_PARA, 0x00, 0x00},
 167         {BRIDGE, M5602_XB_VSYNC_PARA, 0x00, 0x00},
 168 };
 169
 170 static struct v4l2_pix_format mt9m111_modes[] = {
 171         {
 172                 640,
 173                 480,
 174                 V4L2_PIX_FMT_SBGGR8,
 175                 V4L2_FIELD_NONE,
 176                 .sizeimage = 640 * 480,
 177                 .bytesperline = 640,
 178                 .colorspace = V4L2_COLORSPACE_SRGB,
 179                 .priv = 0
 180         }
 181 };
 182
 183 static const struct v4l2_ctrl_ops mt9m111_ctrl_ops = {
 184         .s_ctrl = mt9m111_s_ctrl,
 185 };
 186
 187 static const struct v4l2_ctrl_config mt9m111_greenbal_cfg = {
 188         .ops    = &mt9m111_ctrl_ops,
 189         .id     = M5602_V4L2_CID_GREEN_BALANCE,
 190         .name   = "Green Balance",
 191         .type   = V4L2_CTRL_TYPE_INTEGER,
 192         .min    = 0,
 193         .max    = 0x7ff,
 194         .step   = 1,
 195         .def    = MT9M111_GREEN_GAIN_DEFAULT,
 196         .flags  = V4L2_CTRL_FLAG_SLIDER,
 197 };
 198
 199 int mt9m111_probe(struct sd *sd)
 200 {
 201         u8 data[2] = {0x00, 0x00};
 202         int i, rc = 0;
 203         struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
 204
 205         if (force_sensor) {
 206                 if (force_sensor == MT9M111_SENSOR) {
 207                         pr_info("Forcing a %s sensor\n", mt9m111.name);
 208                         goto sensor_found;
 209                 }
 210                 /* If we want to force another sensor, don't try to probe this
 211                  * one */
 212                 return -ENODEV;
 213         }
 214
 215         gspca_dbg(gspca_dev, D_PROBE, "Probing for a mt9m111 sensor\n");
 216
 217         /* Do the preinit */
 218         for (i = 0; i < ARRAY_SIZE(preinit_mt9m111); i++) {
 219                 if (preinit_mt9m111[i][0] == BRIDGE) {
 220                         rc |= m5602_write_bridge(sd,
 221                                 preinit_mt9m111[i][1],
 222                                 preinit_mt9m111[i][2]);
 223                 } else {
 224                         data[0] = preinit_mt9m111[i][2];
 225                         data[1] = preinit_mt9m111[i][3];
 226                         rc |= m5602_write_sensor(sd,
 227                                 preinit_mt9m111[i][1], data, 2);
 228                 }
 229         }
 230         if (rc < 0)
 231                 return rc;
 232
 233         if (m5602_read_sensor(sd, MT9M111_SC_CHIPVER, data, 2))
 234                 return -ENODEV;
 235
 236         if ((data[0] == 0x14) && (data[1] == 0x3a)) {
 237                 pr_info("Detected a mt9m111 sensor\n");
 238                 goto sensor_found;
 239         }
 240
 241         return -ENODEV;
 242
 243 sensor_found:
 244         sd->gspca_dev.cam.cam_mode = mt9m111_modes;
 245         sd->gspca_dev.cam.nmodes = ARRAY_SIZE(mt9m111_modes);
 246
 247         return 0;
 248 }
 249
 250 int mt9m111_init(struct sd *sd)
 251 {
 252         int i, err = 0;
 253
 254         /* Init the sensor */
 255         for (i = 0; i < ARRAY_SIZE(init_mt9m111) && !err; i++) {
 256                 u8 data[2];
 257
 258                 if (init_mt9m111[i][0] == BRIDGE) {
 259                         err = m5602_write_bridge(sd,
 260                                 init_mt9m111[i][1],
 261                                 init_mt9m111[i][2]);
 262                 } else {
 263                         data[0] = init_mt9m111[i][2];
 264                         data[1] = init_mt9m111[i][3];
 265                         err = m5602_write_sensor(sd,
 266                                 init_mt9m111[i][1], data, 2);
 267                 }
 268         }
 269
 270         if (dump_sensor)
 271                 mt9m111_dump_registers(sd);
 272
 273         return 0;
 274 }
 275
 276 int mt9m111_init_controls(struct sd *sd)
 277 {
 278         struct v4l2_ctrl_handler *hdl = &sd->gspca_dev.ctrl_handler;
 279
 280         sd->gspca_dev.vdev.ctrl_handler = hdl;
 281         v4l2_ctrl_handler_init(hdl, 7);
 282
 283         sd->auto_white_bal = v4l2_ctrl_new_std(hdl, &mt9m111_ctrl_ops,
 284                                                V4L2_CID_AUTO_WHITE_BALANCE,
 285                                                0, 1, 1, 0);
 286         sd->green_bal = v4l2_ctrl_new_custom(hdl, &mt9m111_greenbal_cfg, NULL);
 287         sd->red_bal = v4l2_ctrl_new_std(hdl, &mt9m111_ctrl_ops,
 288                                         V4L2_CID_RED_BALANCE, 0, 0x7ff, 1,
 289                                         MT9M111_RED_GAIN_DEFAULT);
 290         sd->blue_bal = v4l2_ctrl_new_std(hdl, &mt9m111_ctrl_ops,
 291                                         V4L2_CID_BLUE_BALANCE, 0, 0x7ff, 1,
 292                                         MT9M111_BLUE_GAIN_DEFAULT);
 293
 294         v4l2_ctrl_new_std(hdl, &mt9m111_ctrl_ops, V4L2_CID_GAIN, 0,
 295                           (INITIAL_MAX_GAIN - 1) * 2 * 2 * 2, 1,
 296                           MT9M111_DEFAULT_GAIN);
 297
 298         sd->hflip = v4l2_ctrl_new_std(hdl, &mt9m111_ctrl_ops, V4L2_CID_HFLIP,
 299                                       0, 1, 1, 0);
 300         sd->vflip = v4l2_ctrl_new_std(hdl, &mt9m111_ctrl_ops, V4L2_CID_VFLIP,
 301                                       0, 1, 1, 0);
 302
 303         if (hdl->error) {
 304                 pr_err("Could not initialize controls\n");
 305                 return hdl->error;
 306         }
 307
 308         v4l2_ctrl_auto_cluster(4, &sd->auto_white_bal, 0, false);
 309         v4l2_ctrl_cluster(2, &sd->hflip);
 310
 311         return 0;
 312 }
 313
 314 int mt9m111_start(struct sd *sd)
 315 {
 316         int i, err = 0;
 317         u8 data[2];
 318         struct cam *cam = &sd->gspca_dev.cam;
 319         struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
 320
 321         int width = cam->cam_mode[sd->gspca_dev.curr_mode].width - 1;
 322         int height = cam->cam_mode[sd->gspca_dev.curr_mode].height;
 323
 324         for (i = 0; i < ARRAY_SIZE(start_mt9m111) && !err; i++) {
 325                 if (start_mt9m111[i][0] == BRIDGE) {
 326                         err = m5602_write_bridge(sd,
 327                                 start_mt9m111[i][1],
 328                                 start_mt9m111[i][2]);
 329                 } else {
 330                         data[0] = start_mt9m111[i][2];
 331                         data[1] = start_mt9m111[i][3];
 332                         err = m5602_write_sensor(sd,
 333                                 start_mt9m111[i][1], data, 2);
 334                 }
 335         }
 336         if (err < 0)
 337                 return err;
 338
 339         err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height >> 8) & 0xff);
 340         if (err < 0)
 341                 return err;
 342
 343         err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height & 0xff));
 344         if (err < 0)
 345                 return err;
 346
 347         for (i = 0; i < 2 && !err; i++)
 348                 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0);
 349         if (err < 0)
 350                 return err;
 351
 352         err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0);
 353         if (err < 0)
 354                 return err;
 355
 356         err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 2);
 357         if (err < 0)
 358                 return err;
 359
 360         for (i = 0; i < 2 && !err; i++)
 361                 err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, 0);
 362         if (err < 0)
 363                 return err;
 364
 365         err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA,
 366                                  (width >> 8) & 0xff);
 367         if (err < 0)
 368                 return err;
 369
 370         err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, width & 0xff);
 371         if (err < 0)
 372                 return err;
 373
 374         err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0);
 375         if (err < 0)
 376                 return err;
 377
 378         switch (width) {
 379         case 640:
 380                 gspca_dbg(gspca_dev, D_CONF, "Configuring camera for VGA mode\n");
 381                 break;
 382
 383         case 320:
 384                 gspca_dbg(gspca_dev, D_CONF, "Configuring camera for QVGA mode\n");
 385                 break;
 386         }
 387         return err;
 388 }
 389
 390 void mt9m111_disconnect(struct sd *sd)
 391 {
 392         sd->sensor = NULL;
 393 }
 394
 395 static int mt9m111_set_hvflip(struct gspca_dev *gspca_dev)
 396 {
 397         int err;
 398         u8 data[2] = {0x00, 0x00};
 399         struct sd *sd = (struct sd *) gspca_dev;
 400         int hflip;
 401         int vflip;
 402
 403         gspca_dbg(gspca_dev, D_CONF, "Set hvflip to %d %d\n",
 404                   sd->hflip->val, sd->vflip->val);
 405
 406         /* The mt9m111 is flipped by default */
 407         hflip = !sd->hflip->val;
 408         vflip = !sd->vflip->val;
 409
 410         /* Set the correct page map */
 411         err = m5602_write_sensor(sd, MT9M111_PAGE_MAP, data, 2);
 412         if (err < 0)
 413                 return err;
 414
 415         data[0] = MT9M111_RMB_OVER_SIZED;
 416         if (gspca_dev->pixfmt.width == 640) {
 417                 data[1] = MT9M111_RMB_ROW_SKIP_2X |
 418                           MT9M111_RMB_COLUMN_SKIP_2X |
 419                           (hflip << 1) | vflip;
 420         } else {
 421                 data[1] = MT9M111_RMB_ROW_SKIP_4X |
 422                           MT9M111_RMB_COLUMN_SKIP_4X |
 423                           (hflip << 1) | vflip;
 424         }
 425         err = m5602_write_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B,
 426                                         data, 2);
 427         return err;
 428 }
 429
 430 static int mt9m111_set_auto_white_balance(struct gspca_dev *gspca_dev,
 431                                           __s32 val)
 432 {
 433         struct sd *sd = (struct sd *) gspca_dev;
 434         int err;
 435         u8 data[2];
 436
 437         err = m5602_read_sensor(sd, MT9M111_CP_OPERATING_MODE_CTL, data, 2);
 438         if (err < 0)
 439                 return err;
 440
 441         data[1] = ((data[1] & 0xfd) | ((val & 0x01) << 1));
 442
 443         err = m5602_write_sensor(sd, MT9M111_CP_OPERATING_MODE_CTL, data, 2);
 444
 445         gspca_dbg(gspca_dev, D_CONF, "Set auto white balance %d\n", val);
 446         return err;
 447 }
 448
 449 static int mt9m111_set_gain(struct gspca_dev *gspca_dev, __s32 val)
 450 {
 451         int err, tmp;
 452         u8 data[2] = {0x00, 0x00};
 453         struct sd *sd = (struct sd *) gspca_dev;
 454
 455         /* Set the correct page map */
 456         err = m5602_write_sensor(sd, MT9M111_PAGE_MAP, data, 2);
 457         if (err < 0)
 458                 return err;
 459
 460         if (val >= INITIAL_MAX_GAIN * 2 * 2 * 2)
 461                 return -EINVAL;
 462
 463         if ((val >= INITIAL_MAX_GAIN * 2 * 2) &&
 464             (val < (INITIAL_MAX_GAIN - 1) * 2 * 2 * 2))
 465                 tmp = (1 << 10) | (val << 9) |
 466                                 (val << 8) | (val / 8);
 467         else if ((val >= INITIAL_MAX_GAIN * 2) &&
 468                  (val <  INITIAL_MAX_GAIN * 2 * 2))
 469                 tmp = (1 << 9) | (1 << 8) | (val / 4);
 470         else if ((val >= INITIAL_MAX_GAIN) &&
 471                  (val < INITIAL_MAX_GAIN * 2))
 472                 tmp = (1 << 8) | (val / 2);
 473         else
 474                 tmp = val;
 475
 476         data[1] = (tmp & 0xff);
 477         data[0] = (tmp & 0xff00) >> 8;
 478         gspca_dbg(gspca_dev, D_CONF, "tmp=%d, data[1]=%d, data[0]=%d\n", tmp,
 479                   data[1], data[0]);
 480
 481         err = m5602_write_sensor(sd, MT9M111_SC_GLOBAL_GAIN,
 482                                    data, 2);
 483
 484         return err;
 485 }
 486
 487 static int mt9m111_set_green_balance(struct gspca_dev *gspca_dev, __s32 val)
 488 {
 489         int err;
 490         u8 data[2];
 491         struct sd *sd = (struct sd *) gspca_dev;
 492
 493         data[1] = (val & 0xff);
 494         data[0] = (val & 0xff00) >> 8;
 495
 496         gspca_dbg(gspca_dev, D_CONF, "Set green balance %d\n", val);
 497         err = m5602_write_sensor(sd, MT9M111_SC_GREEN_1_GAIN,
 498                                  data, 2);
 499         if (err < 0)
 500                 return err;
 501
 502         return m5602_write_sensor(sd, MT9M111_SC_GREEN_2_GAIN,
 503                                   data, 2);
 504 }
 505
 506 static int mt9m111_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
 507 {
 508         u8 data[2];
 509         struct sd *sd = (struct sd *) gspca_dev;
 510
 511         data[1] = (val & 0xff);
 512         data[0] = (val & 0xff00) >> 8;
 513
 514         gspca_dbg(gspca_dev, D_CONF, "Set blue balance %d\n", val);
 515
 516         return m5602_write_sensor(sd, MT9M111_SC_BLUE_GAIN,
 517                                   data, 2);
 518 }
 519
 520 static int mt9m111_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
 521 {
 522         u8 data[2];
 523         struct sd *sd = (struct sd *) gspca_dev;
 524
 525         data[1] = (val & 0xff);
 526         data[0] = (val & 0xff00) >> 8;
 527
 528         gspca_dbg(gspca_dev, D_CONF, "Set red balance %d\n", val);
 529
 530         return m5602_write_sensor(sd, MT9M111_SC_RED_GAIN,
 531                                   data, 2);
 532 }
 533
 534 static int mt9m111_s_ctrl(struct v4l2_ctrl *ctrl)
 535 {
 536         struct gspca_dev *gspca_dev =
 537                 container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
 538         struct sd *sd = (struct sd *) gspca_dev;
 539         int err;
 540
 541         if (!gspca_dev->streaming)
 542                 return 0;
 543
 544         switch (ctrl->id) {
 545         case V4L2_CID_AUTO_WHITE_BALANCE:
 546                 err = mt9m111_set_auto_white_balance(gspca_dev, ctrl->val);
 547                 if (err || ctrl->val)
 548                         return err;
 549                 err = mt9m111_set_green_balance(gspca_dev, sd->green_bal->val);
 550                 if (err)
 551                         return err;
 552                 err = mt9m111_set_red_balance(gspca_dev, sd->red_bal->val);
 553                 if (err)
 554                         return err;
 555                 err = mt9m111_set_blue_balance(gspca_dev, sd->blue_bal->val);
 556                 break;
 557         case V4L2_CID_GAIN:
 558                 err = mt9m111_set_gain(gspca_dev, ctrl->val);
 559                 break;
 560         case V4L2_CID_HFLIP:
 561                 err = mt9m111_set_hvflip(gspca_dev);
 562                 break;
 563         default:
 564                 return -EINVAL;
 565         }
 566
 567         return err;
 568 }
 569
 570 static void mt9m111_dump_registers(struct sd *sd)
 571 {
 572         u8 address, value[2] = {0x00, 0x00};
 573
 574         pr_info("Dumping the mt9m111 register state\n");
 575
 576         pr_info("Dumping the mt9m111 sensor core registers\n");
 577         value[1] = MT9M111_SENSOR_CORE;
 578         m5602_write_sensor(sd, MT9M111_PAGE_MAP, value, 2);
 579         for (address = 0; address < 0xff; address++) {
 580                 m5602_read_sensor(sd, address, value, 2);
 581                 pr_info("register 0x%x contains 0x%x%x\n",
 582                         address, value[0], value[1]);
 583         }
 584
 585         pr_info("Dumping the mt9m111 color pipeline registers\n");
 586         value[1] = MT9M111_COLORPIPE;
 587         m5602_write_sensor(sd, MT9M111_PAGE_MAP, value, 2);
 588         for (address = 0; address < 0xff; address++) {
 589                 m5602_read_sensor(sd, address, value, 2);
 590                 pr_info("register 0x%x contains 0x%x%x\n",
 591                         address, value[0], value[1]);
 592         }
 593
 594         pr_info("Dumping the mt9m111 camera control registers\n");
 595         value[1] = MT9M111_CAMERA_CONTROL;
 596         m5602_write_sensor(sd, MT9M111_PAGE_MAP, value, 2);
 597         for (address = 0; address < 0xff; address++) {
 598                 m5602_read_sensor(sd, address, value, 2);
 599                 pr_info("register 0x%x contains 0x%x%x\n",
 600                         address, value[0], value[1]);
 601         }
 602
 603         pr_info("mt9m111 register state dump complete\n");
 604 }