kernel/2.6.29.6-aldebaran-rt/drivers/media/video/gspca/m5602/m5602_ov9650.c

   1 /*
   2  * Driver for the ov9650 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 #include "m5602_ov9650.h"
  20
  21 /* Vertically and horizontally flips the image if matched, needed for machines
  22    where the sensor is mounted upside down */
  23 static
  24     const
  25         struct dmi_system_id ov9650_flip_dmi_table[] = {
  26         {
  27                 .ident = "ASUS A6VC",
  28                 .matches = {
  29                         DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
  30                         DMI_MATCH(DMI_PRODUCT_NAME, "A6VC")
  31                 }
  32         },
  33         {
  34                 .ident = "ASUS A6VM",
  35                 .matches = {
  36                         DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
  37                         DMI_MATCH(DMI_PRODUCT_NAME, "A6VM")
  38                 }
  39         },
  40         {
  41                 .ident = "ASUS A6JC",
  42                 .matches = {
  43                         DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
  44                         DMI_MATCH(DMI_PRODUCT_NAME, "A6JC")
  45                 }
  46         },
  47         {
  48                 .ident = "ASUS A6Ja",
  49                 .matches = {
  50                         DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
  51                         DMI_MATCH(DMI_PRODUCT_NAME, "A6J")
  52                 }
  53         },
  54         {
  55                 .ident = "ASUS A6Kt",
  56                 .matches = {
  57                         DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
  58                         DMI_MATCH(DMI_PRODUCT_NAME, "A6Kt")
  59                 }
  60         },
  61         {
  62                 .ident = "Alienware Aurora m9700",
  63                 .matches = {
  64                         DMI_MATCH(DMI_SYS_VENDOR, "alienware"),
  65                         DMI_MATCH(DMI_PRODUCT_NAME, "Aurora m9700")
  66                 }
  67         },
  68         { }
  69 };
  70
  71 static void ov9650_dump_registers(struct sd *sd);
  72
  73 int ov9650_probe(struct sd *sd)
  74 {
  75         u8 prod_id = 0, ver_id = 0, i;
  76
  77         if (force_sensor) {
  78                 if (force_sensor == OV9650_SENSOR) {
  79                         info("Forcing an %s sensor", ov9650.name);
  80                         goto sensor_found;
  81                 }
  82                 /* If we want to force another sensor,
  83                    don't try to probe this one */
  84                 return -ENODEV;
  85         }
  86
  87         info("Probing for an ov9650 sensor");
  88
  89         /* Run the pre-init to actually probe the unit */
  90         for (i = 0; i < ARRAY_SIZE(preinit_ov9650); i++) {
  91                 u8 data = preinit_ov9650[i][2];
  92                 if (preinit_ov9650[i][0] == SENSOR)
  93                         m5602_write_sensor(sd,
  94                                             preinit_ov9650[i][1], &data, 1);
  95                 else
  96                         m5602_write_bridge(sd, preinit_ov9650[i][1], data);
  97         }
  98
  99         if (m5602_read_sensor(sd, OV9650_PID, &prod_id, 1))
 100                 return -ENODEV;
 101
 102         if (m5602_read_sensor(sd, OV9650_VER, &ver_id, 1))
 103                 return -ENODEV;
 104
 105         if ((prod_id == 0x96) && (ver_id == 0x52)) {
 106                 info("Detected an ov9650 sensor");
 107                 goto sensor_found;
 108         }
 109
 110         return -ENODEV;
 111
 112 sensor_found:
 113         sd->gspca_dev.cam.cam_mode = ov9650.modes;
 114         sd->gspca_dev.cam.nmodes = ov9650.nmodes;
 115         sd->desc->ctrls = ov9650.ctrls;
 116         sd->desc->nctrls = ov9650.nctrls;
 117         return 0;
 118 }
 119
 120 int ov9650_init(struct sd *sd)
 121 {
 122         int i, err = 0;
 123         u8 data;
 124
 125         if (dump_sensor)
 126                 ov9650_dump_registers(sd);
 127
 128         for (i = 0; i < ARRAY_SIZE(init_ov9650) && !err; i++) {
 129                 data = init_ov9650[i][2];
 130                 if (init_ov9650[i][0] == SENSOR)
 131                         err = m5602_write_sensor(sd, init_ov9650[i][1],
 132                                                   &data, 1);
 133                 else
 134                         err = m5602_write_bridge(sd, init_ov9650[i][1], data);
 135         }
 136
 137         if (dmi_check_system(ov9650_flip_dmi_table) && !err) {
 138                 info("vflip quirk active");
 139                 data = 0x30;
 140                 err = m5602_write_sensor(sd, OV9650_MVFP, &data, 1);
 141         }
 142         return err;
 143 }
 144
 145 int ov9650_start(struct sd *sd)
 146 {
 147         int i, err = 0;
 148         struct cam *cam = &sd->gspca_dev.cam;
 149
 150         for (i = 0; i < ARRAY_SIZE(res_init_ov9650) && !err; i++) {
 151                 u8 data = res_init_ov9650[i][1];
 152                 err = m5602_write_bridge(sd, res_init_ov9650[i][0], data);
 153         }
 154         if (err < 0)
 155                 return err;
 156
 157         switch (cam->cam_mode[sd->gspca_dev.curr_mode].width)
 158         {
 159         case 640:
 160                 PDEBUG(D_V4L2, "Configuring camera for VGA mode");
 161
 162                 for (i = 0; i < ARRAY_SIZE(VGA_ov9650) && !err; i++) {
 163                         u8 data = VGA_ov9650[i][2];
 164                         if (VGA_ov9650[i][0] == SENSOR)
 165                                 err = m5602_write_sensor(sd,
 166                                         VGA_ov9650[i][1], &data, 1);
 167                         else
 168                                 err = m5602_write_bridge(sd, VGA_ov9650[i][1], data);
 169                 }
 170                 break;
 171
 172         case 352:
 173                 PDEBUG(D_V4L2, "Configuring camera for CIF mode");
 174
 175                 for (i = 0; i < ARRAY_SIZE(CIF_ov9650) && !err; i++) {
 176                         u8 data = CIF_ov9650[i][2];
 177                         if (CIF_ov9650[i][0] == SENSOR)
 178                                 err = m5602_write_sensor(sd,
 179                                         CIF_ov9650[i][1], &data, 1);
 180                         else
 181                                 err = m5602_write_bridge(sd, CIF_ov9650[i][1], data);
 182                 }
 183                 break;
 184
 185         case 320:
 186                 PDEBUG(D_V4L2, "Configuring camera for QVGA mode");
 187
 188                 for (i = 0; i < ARRAY_SIZE(QVGA_ov9650) && !err; i++) {
 189                         u8 data = QVGA_ov9650[i][2];
 190                         if (QVGA_ov9650[i][0] == SENSOR)
 191                                 err = m5602_write_sensor(sd,
 192                                         QVGA_ov9650[i][1], &data, 1);
 193                         else
 194                                 err = m5602_write_bridge(sd, QVGA_ov9650[i][1], data);
 195                 }
 196                 break;
 197         }
 198         return err;
 199 }
 200
 201 int ov9650_power_down(struct sd *sd)
 202 {
 203         int i, err = 0;
 204         for (i = 0; i < ARRAY_SIZE(power_down_ov9650) && !err; i++) {
 205                 u8 data = power_down_ov9650[i][2];
 206                 if (power_down_ov9650[i][0] == SENSOR)
 207                         err = m5602_write_sensor(sd,
 208                                             power_down_ov9650[i][1], &data, 1);
 209                 else
 210                         err = m5602_write_bridge(sd, power_down_ov9650[i][1],
 211                                                  data);
 212         }
 213
 214         return err;
 215 }
 216
 217 int ov9650_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
 218 {
 219         struct sd *sd = (struct sd *) gspca_dev;
 220         u8 i2c_data;
 221         int err;
 222
 223         err = m5602_read_sensor(sd, OV9650_COM1, &i2c_data, 1);
 224         if (err < 0)
 225                 goto out;
 226         *val = i2c_data & 0x03;
 227
 228         err = m5602_read_sensor(sd, OV9650_AECH, &i2c_data, 1);
 229         if (err < 0)
 230                 goto out;
 231         *val |= (i2c_data << 2);
 232
 233         err = m5602_read_sensor(sd, OV9650_AECHM, &i2c_data, 1);
 234         if (err < 0)
 235                 goto out;
 236         *val |= (i2c_data & 0x3f) << 10;
 237
 238         PDEBUG(D_V4L2, "Read exposure %d", *val);
 239 out:
 240         return err;
 241 }
 242
 243 int ov9650_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
 244 {
 245         struct sd *sd = (struct sd *) gspca_dev;
 246         u8 i2c_data;
 247         int err;
 248
 249         PDEBUG(D_V4L2, "Set exposure to %d",
 250                val & 0xffff);
 251
 252         /* The 6 MSBs */
 253         i2c_data = (val >> 10) & 0x3f;
 254         err = m5602_write_sensor(sd, OV9650_AECHM,
 255                                   &i2c_data, 1);
 256         if (err < 0)
 257                 goto out;
 258
 259         /* The 8 middle bits */
 260         i2c_data = (val >> 2) & 0xff;
 261         err = m5602_write_sensor(sd, OV9650_AECH,
 262                                   &i2c_data, 1);
 263         if (err < 0)
 264                 goto out;
 265
 266         /* The 2 LSBs */
 267         i2c_data = val & 0x03;
 268         err = m5602_write_sensor(sd, OV9650_COM1, &i2c_data, 1);
 269
 270 out:
 271         return err;
 272 }
 273
 274 int ov9650_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
 275 {
 276         int err;
 277         u8 i2c_data;
 278         struct sd *sd = (struct sd *) gspca_dev;
 279
 280         m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
 281         *val = (i2c_data & 0x03) << 8;
 282
 283         err = m5602_read_sensor(sd, OV9650_GAIN, &i2c_data, 1);
 284         *val |= i2c_data;
 285         PDEBUG(D_V4L2, "Read gain %d", *val);
 286         return err;
 287 }
 288
 289 int ov9650_set_gain(struct gspca_dev *gspca_dev, __s32 val)
 290 {
 291         int err;
 292         u8 i2c_data;
 293         struct sd *sd = (struct sd *) gspca_dev;
 294
 295         /* The 2 MSB */
 296         /* Read the OV9650_VREF register first to avoid
 297            corrupting the VREF high and low bits */
 298         m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
 299         /* Mask away all uninteresting bits */
 300         i2c_data = ((val & 0x0300) >> 2) |
 301                         (i2c_data & 0x3F);
 302         err = m5602_write_sensor(sd, OV9650_VREF, &i2c_data, 1);
 303
 304         /* The 8 LSBs */
 305         i2c_data = val & 0xff;
 306         err = m5602_write_sensor(sd, OV9650_GAIN, &i2c_data, 1);
 307         return err;
 308 }
 309
 310 int ov9650_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val)
 311 {
 312         int err;
 313         u8 i2c_data;
 314         struct sd *sd = (struct sd *) gspca_dev;
 315
 316         err = m5602_read_sensor(sd, OV9650_RED, &i2c_data, 1);
 317         *val = i2c_data;
 318
 319         PDEBUG(D_V4L2, "Read red gain %d", *val);
 320
 321         return err;
 322 }
 323
 324 int ov9650_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
 325 {
 326         int err;
 327         u8 i2c_data;
 328         struct sd *sd = (struct sd *) gspca_dev;
 329
 330         PDEBUG(D_V4L2, "Set red gain to %d",
 331                              val & 0xff);
 332
 333         i2c_data = val & 0xff;
 334         err = m5602_write_sensor(sd, OV9650_RED, &i2c_data, 1);
 335
 336         return err;
 337 }
 338
 339 int ov9650_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val)
 340 {
 341         int err;
 342         u8 i2c_data;
 343         struct sd *sd = (struct sd *) gspca_dev;
 344
 345         err = m5602_read_sensor(sd, OV9650_BLUE, &i2c_data, 1);
 346         *val = i2c_data;
 347
 348         PDEBUG(D_V4L2, "Read blue gain %d", *val);
 349
 350         return err;
 351 }
 352
 353 int ov9650_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
 354 {
 355         int err;
 356         u8 i2c_data;
 357         struct sd *sd = (struct sd *) gspca_dev;
 358
 359         PDEBUG(D_V4L2, "Set blue gain to %d",
 360                val & 0xff);
 361
 362         i2c_data = val & 0xff;
 363         err = m5602_write_sensor(sd, OV9650_BLUE, &i2c_data, 1);
 364
 365         return err;
 366 }
 367
 368 int ov9650_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
 369 {
 370         int err;
 371         u8 i2c_data;
 372         struct sd *sd = (struct sd *) gspca_dev;
 373
 374         err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
 375         if (dmi_check_system(ov9650_flip_dmi_table))
 376                 *val = ((i2c_data & OV9650_HFLIP) >> 5) ? 0 : 1;
 377         else
 378                 *val = (i2c_data & OV9650_HFLIP) >> 5;
 379         PDEBUG(D_V4L2, "Read horizontal flip %d", *val);
 380
 381         return err;
 382 }
 383
 384 int ov9650_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
 385 {
 386         int err;
 387         u8 i2c_data;
 388         struct sd *sd = (struct sd *) gspca_dev;
 389
 390         PDEBUG(D_V4L2, "Set horizontal flip to %d", val);
 391         err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
 392         if (err < 0)
 393                 goto out;
 394
 395         if (dmi_check_system(ov9650_flip_dmi_table))
 396                 i2c_data = ((i2c_data & 0xdf) |
 397                            (((val ? 0 : 1) & 0x01) << 5));
 398         else
 399                 i2c_data = ((i2c_data & 0xdf) |
 400                            ((val & 0x01) << 5));
 401
 402         err = m5602_write_sensor(sd, OV9650_MVFP, &i2c_data, 1);
 403 out:
 404         return err;
 405 }
 406
 407 int ov9650_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
 408 {
 409         int err;
 410         u8 i2c_data;
 411         struct sd *sd = (struct sd *) gspca_dev;
 412
 413         err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
 414         if (dmi_check_system(ov9650_flip_dmi_table))
 415                 *val = ((i2c_data & 0x10) >> 4) ? 0 : 1;
 416         else
 417                 *val = (i2c_data & 0x10) >> 4;
 418         PDEBUG(D_V4L2, "Read vertical flip %d", *val);
 419
 420         return err;
 421 }
 422
 423 int ov9650_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
 424 {
 425         int err;
 426         u8 i2c_data;
 427         struct sd *sd = (struct sd *) gspca_dev;
 428
 429         PDEBUG(D_V4L2, "Set vertical flip to %d", val);
 430         err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
 431         if (err < 0)
 432                 goto out;
 433
 434         if (dmi_check_system(ov9650_flip_dmi_table))
 435                 i2c_data = ((i2c_data & 0xef) |
 436                                 (((val ? 0 : 1) & 0x01) << 4));
 437         else
 438                 i2c_data = ((i2c_data & 0xef) |
 439                                 ((val & 0x01) << 4));
 440
 441         err = m5602_write_sensor(sd, OV9650_MVFP, &i2c_data, 1);
 442 out:
 443         return err;
 444 }
 445
 446 int ov9650_get_brightness(struct gspca_dev *gspca_dev, __s32 *val)
 447 {
 448         int err;
 449         u8 i2c_data;
 450         struct sd *sd = (struct sd *) gspca_dev;
 451
 452         err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
 453         if (err < 0)
 454                 goto out;
 455         *val = (i2c_data & 0x03) << 8;
 456
 457         err = m5602_read_sensor(sd, OV9650_GAIN, &i2c_data, 1);
 458         *val |= i2c_data;
 459         PDEBUG(D_V4L2, "Read gain %d", *val);
 460 out:
 461         return err;
 462 }
 463
 464 int ov9650_set_brightness(struct gspca_dev *gspca_dev, __s32 val)
 465 {
 466         int err;
 467         u8 i2c_data;
 468         struct sd *sd = (struct sd *) gspca_dev;
 469
 470         PDEBUG(D_V4L2, "Set gain to %d", val & 0x3ff);
 471
 472         /* Read the OV9650_VREF register first to avoid
 473                 corrupting the VREF high and low bits */
 474         err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
 475         if (err < 0)
 476                 goto out;
 477
 478         /* Mask away all uninteresting bits */
 479         i2c_data = ((val & 0x0300) >> 2) | (i2c_data & 0x3F);
 480         err = m5602_write_sensor(sd, OV9650_VREF, &i2c_data, 1);
 481         if (err < 0)
 482                 goto out;
 483
 484         /* The 8 LSBs */
 485         i2c_data = val & 0xff;
 486         err = m5602_write_sensor(sd, OV9650_GAIN, &i2c_data, 1);
 487
 488 out:
 489         return err;
 490 }
 491
 492 int ov9650_get_auto_white_balance(struct gspca_dev *gspca_dev, __s32 *val)
 493 {
 494         int err;
 495         u8 i2c_data;
 496         struct sd *sd = (struct sd *) gspca_dev;
 497
 498         err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
 499         *val = (i2c_data & OV9650_AWB_EN) >> 1;
 500         PDEBUG(D_V4L2, "Read auto white balance %d", *val);
 501
 502         return err;
 503 }
 504
 505 int ov9650_set_auto_white_balance(struct gspca_dev *gspca_dev, __s32 val)
 506 {
 507         int err;
 508         u8 i2c_data;
 509         struct sd *sd = (struct sd *) gspca_dev;
 510
 511         PDEBUG(D_V4L2, "Set auto white balance to %d", val);
 512         err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
 513         if (err < 0)
 514                 goto out;
 515
 516         i2c_data = ((i2c_data & 0xfd) | ((val & 0x01) << 1));
 517         err = m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
 518 out:
 519         return err;
 520 }
 521
 522 int ov9650_get_auto_gain(struct gspca_dev *gspca_dev, __s32 *val)
 523 {
 524         int err;
 525         u8 i2c_data;
 526         struct sd *sd = (struct sd *) gspca_dev;
 527
 528         err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
 529         *val = (i2c_data & OV9650_AGC_EN) >> 2;
 530         PDEBUG(D_V4L2, "Read auto gain control %d", *val);
 531
 532         return err;
 533 }
 534
 535 int ov9650_set_auto_gain(struct gspca_dev *gspca_dev, __s32 val)
 536 {
 537         int err;
 538         u8 i2c_data;
 539         struct sd *sd = (struct sd *) gspca_dev;
 540
 541         PDEBUG(D_V4L2, "Set auto gain control to %d", val);
 542         err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
 543         if (err < 0)
 544                 goto out;
 545
 546         i2c_data = ((i2c_data & 0xfb) | ((val & 0x01) << 2));
 547         err = m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
 548 out:
 549         return err;
 550 }
 551
 552 static void ov9650_dump_registers(struct sd *sd)
 553 {
 554         int address;
 555         info("Dumping the ov9650 register state");
 556         for (address = 0; address < 0xa9; address++) {
 557                 u8 value;
 558                 m5602_read_sensor(sd, address, &value, 1);
 559                 info("register 0x%x contains 0x%x",
 560                      address, value);
 561         }
 562
 563         info("ov9650 register state dump complete");
 564
 565         info("Probing for which registers that are read/write");
 566         for (address = 0; address < 0xff; address++) {
 567                 u8 old_value, ctrl_value;
 568                 u8 test_value[2] = {0xff, 0xff};
 569
 570                 m5602_read_sensor(sd, address, &old_value, 1);
 571                 m5602_write_sensor(sd, address, test_value, 1);
 572                 m5602_read_sensor(sd, address, &ctrl_value, 1);
 573
 574                 if (ctrl_value == test_value[0])
 575                         info("register 0x%x is writeable", address);
 576                 else
 577                         info("register 0x%x is read only", address);
 578
 579                 /* Restore original value */
 580                 m5602_write_sensor(sd, address, &old_value, 1);
 581         }
 582 }