drivers/media/video/gspca/stv06xx/stv06xx_pb0100.c

   1 /*
   2  * Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher
   3  *                    Mark Cave-Ayland, Carlo E Prelz, Dick Streefland
   4  * Copyright (c) 2002, 2003 Tuukka Toivonen
   5  * Copyright (c) 2008 Erik Andrén
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  *
  21  * P/N 861037:      Sensor HDCS1000        ASIC STV0600
  22  * P/N 861050-0010: Sensor HDCS1000        ASIC STV0600
  23  * P/N 861050-0020: Sensor Photobit PB100  ASIC STV0600-1 - QuickCam Express
  24  * P/N 861055:      Sensor ST VV6410       ASIC STV0610   - LEGO cam
  25  * P/N 861075-0040: Sensor HDCS1000        ASIC
  26  * P/N 961179-0700: Sensor ST VV6410       ASIC STV0602   - Dexxa WebCam USB
  27  * P/N 861040-0000: Sensor ST VV6410       ASIC STV0610   - QuickCam Web
  28  */
  29
  30 /*
  31  * The spec file for the PB-0100 suggests the following for best quality
  32  * images after the sensor has been reset :
  33  *
  34  * PB_ADCGAINL      = R60 = 0x03 (3 dec)      : sets low reference of ADC
  35                                                 to produce good black level
  36  * PB_PREADCTRL     = R32 = 0x1400 (5120 dec) : Enables global gain changes
  37                                                 through R53
  38  * PB_ADCMINGAIN    = R52 = 0x10 (16 dec)     : Sets the minimum gain for
  39                                                 auto-exposure
  40  * PB_ADCGLOBALGAIN = R53 = 0x10 (16 dec)     : Sets the global gain
  41  * PB_EXPGAIN       = R14 = 0x11 (17 dec)     : Sets the auto-exposure value
  42  * PB_UPDATEINT     = R23 = 0x02 (2 dec)      : Sets the speed on
  43                                                 auto-exposure routine
  44  * PB_CFILLIN       = R5  = 0x0E (14 dec)     : Sets the frame rate
  45  */
  46
  47 #include "stv06xx_pb0100.h"
  48
  49 static const struct ctrl pb0100_ctrl[] = {
  50 #define GAIN_IDX 0
  51         {
  52                 {
  53                         .id             = V4L2_CID_GAIN,
  54                         .type           = V4L2_CTRL_TYPE_INTEGER,
  55                         .name           = "Gain",
  56                         .minimum        = 0,
  57                         .maximum        = 255,
  58                         .step           = 1,
  59                         .default_value  = 128
  60                 },
  61                 .set = pb0100_set_gain,
  62                 .get = pb0100_get_gain
  63         },
  64 #define RED_BALANCE_IDX 1
  65         {
  66                 {
  67                         .id             = V4L2_CID_RED_BALANCE,
  68                         .type           = V4L2_CTRL_TYPE_INTEGER,
  69                         .name           = "Red Balance",
  70                         .minimum        = -255,
  71                         .maximum        = 255,
  72                         .step           = 1,
  73                         .default_value  = 0
  74                 },
  75                 .set = pb0100_set_red_balance,
  76                 .get = pb0100_get_red_balance
  77         },
  78 #define BLUE_BALANCE_IDX 2
  79         {
  80                 {
  81                         .id             = V4L2_CID_BLUE_BALANCE,
  82                         .type           = V4L2_CTRL_TYPE_INTEGER,
  83                         .name           = "Blue Balance",
  84                         .minimum        = -255,
  85                         .maximum        = 255,
  86                         .step           = 1,
  87                         .default_value  = 0
  88                 },
  89                 .set = pb0100_set_blue_balance,
  90                 .get = pb0100_get_blue_balance
  91         },
  92 #define EXPOSURE_IDX 3
  93         {
  94                 {
  95                         .id             = V4L2_CID_EXPOSURE,
  96                         .type           = V4L2_CTRL_TYPE_INTEGER,
  97                         .name           = "Exposure",
  98                         .minimum        = 0,
  99                         .maximum        = 511,
 100                         .step           = 1,
 101                         .default_value  = 12
 102                 },
 103                 .set = pb0100_set_exposure,
 104                 .get = pb0100_get_exposure
 105         },
 106 #define AUTOGAIN_IDX 4
 107         {
 108                 {
 109                         .id             = V4L2_CID_AUTOGAIN,
 110                         .type           = V4L2_CTRL_TYPE_BOOLEAN,
 111                         .name           = "Automatic Gain and Exposure",
 112                         .minimum        = 0,
 113                         .maximum        = 1,
 114                         .step           = 1,
 115                         .default_value  = 1
 116                 },
 117                 .set = pb0100_set_autogain,
 118                 .get = pb0100_get_autogain
 119         },
 120 #define AUTOGAIN_TARGET_IDX 5
 121         {
 122                 {
 123                         .id             = V4L2_CTRL_CLASS_USER + 0x1000,
 124                         .type           = V4L2_CTRL_TYPE_INTEGER,
 125                         .name           = "Automatic Gain Target",
 126                         .minimum        = 0,
 127                         .maximum        = 255,
 128                         .step           = 1,
 129                         .default_value  = 128
 130                 },
 131                 .set = pb0100_set_autogain_target,
 132                 .get = pb0100_get_autogain_target
 133         },
 134 #define NATURAL_IDX 6
 135         {
 136                 {
 137                         .id             = V4L2_CTRL_CLASS_USER + 0x1001,
 138                         .type           = V4L2_CTRL_TYPE_BOOLEAN,
 139                         .name           = "Natural Light Source",
 140                         .minimum        = 0,
 141                         .maximum        = 1,
 142                         .step           = 1,
 143                         .default_value  = 1
 144                 },
 145                 .set = pb0100_set_natural,
 146                 .get = pb0100_get_natural
 147         }
 148 };
 149
 150 static struct v4l2_pix_format pb0100_mode[] = {
 151 /* low res / subsample modes disabled as they are only half res horizontal,
 152    halving the vertical resolution does not seem to work */
 153         {
 154                 320,
 155                 240,
 156                 V4L2_PIX_FMT_SGRBG8,
 157                 V4L2_FIELD_NONE,
 158                 .sizeimage = 320 * 240,
 159                 .bytesperline = 320,
 160                 .colorspace = V4L2_COLORSPACE_SRGB,
 161                 .priv = PB0100_CROP_TO_VGA
 162         },
 163         {
 164                 352,
 165                 288,
 166                 V4L2_PIX_FMT_SGRBG8,
 167                 V4L2_FIELD_NONE,
 168                 .sizeimage = 352 * 288,
 169                 .bytesperline = 352,
 170                 .colorspace = V4L2_COLORSPACE_SRGB,
 171                 .priv = 0
 172         }
 173 };
 174
 175 static int pb0100_probe(struct sd *sd)
 176 {
 177         u16 sensor;
 178         int i, err;
 179         s32 *sensor_settings;
 180
 181         err = stv06xx_read_sensor(sd, PB_IDENT, &sensor);
 182
 183         if (err < 0)
 184                 return -ENODEV;
 185
 186         if ((sensor >> 8) == 0x64) {
 187                 sensor_settings = kmalloc(
 188                                 ARRAY_SIZE(pb0100_ctrl) * sizeof(s32),
 189                                 GFP_KERNEL);
 190                 if (!sensor_settings)
 191                         return -ENOMEM;
 192
 193                 info("Photobit pb0100 sensor detected");
 194
 195                 sd->gspca_dev.cam.cam_mode = pb0100_mode;
 196                 sd->gspca_dev.cam.nmodes = ARRAY_SIZE(pb0100_mode);
 197                 sd->desc.ctrls = pb0100_ctrl;
 198                 sd->desc.nctrls = ARRAY_SIZE(pb0100_ctrl);
 199                 for (i = 0; i < sd->desc.nctrls; i++)
 200                         sensor_settings[i] = pb0100_ctrl[i].qctrl.default_value;
 201                 sd->sensor_priv = sensor_settings;
 202
 203                 return 0;
 204         }
 205
 206         return -ENODEV;
 207 }
 208
 209 static int pb0100_start(struct sd *sd)
 210 {
 211         int err, packet_size, max_packet_size;
 212         struct usb_host_interface *alt;
 213         struct usb_interface *intf;
 214         struct cam *cam = &sd->gspca_dev.cam;
 215         s32 *sensor_settings = sd->sensor_priv;
 216         u32 mode = cam->cam_mode[sd->gspca_dev.curr_mode].priv;
 217
 218         intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface);
 219         alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt);
 220         packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
 221
 222         /* If we don't have enough bandwidth use a lower framerate */
 223         max_packet_size = sd->sensor->max_packet_size[sd->gspca_dev.curr_mode];
 224         if (packet_size < max_packet_size)
 225                 stv06xx_write_sensor(sd, PB_ROWSPEED, BIT(4)|BIT(3)|BIT(1));
 226         else
 227                 stv06xx_write_sensor(sd, PB_ROWSPEED, BIT(5)|BIT(3)|BIT(1));
 228
 229         /* Setup sensor window */
 230         if (mode & PB0100_CROP_TO_VGA) {
 231                 stv06xx_write_sensor(sd, PB_RSTART, 30);
 232                 stv06xx_write_sensor(sd, PB_CSTART, 20);
 233                 stv06xx_write_sensor(sd, PB_RWSIZE, 240 - 1);
 234                 stv06xx_write_sensor(sd, PB_CWSIZE, 320 - 1);
 235         } else {
 236                 stv06xx_write_sensor(sd, PB_RSTART, 8);
 237                 stv06xx_write_sensor(sd, PB_CSTART, 4);
 238                 stv06xx_write_sensor(sd, PB_RWSIZE, 288 - 1);
 239                 stv06xx_write_sensor(sd, PB_CWSIZE, 352 - 1);
 240         }
 241
 242         if (mode & PB0100_SUBSAMPLE) {
 243                 stv06xx_write_bridge(sd, STV_Y_CTRL, 0x02); /* Wrong, FIXME */
 244                 stv06xx_write_bridge(sd, STV_X_CTRL, 0x06);
 245
 246                 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x10);
 247         } else {
 248                 stv06xx_write_bridge(sd, STV_Y_CTRL, 0x01);
 249                 stv06xx_write_bridge(sd, STV_X_CTRL, 0x0a);
 250                 /* larger -> slower */
 251                 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x20);
 252         }
 253
 254         /* set_gain also sets red and blue balance */
 255         pb0100_set_gain(&sd->gspca_dev, sensor_settings[GAIN_IDX]);
 256         pb0100_set_exposure(&sd->gspca_dev, sensor_settings[EXPOSURE_IDX]);
 257         pb0100_set_autogain_target(&sd->gspca_dev,
 258                                    sensor_settings[AUTOGAIN_TARGET_IDX]);
 259         pb0100_set_autogain(&sd->gspca_dev, sensor_settings[AUTOGAIN_IDX]);
 260
 261         err = stv06xx_write_sensor(sd, PB_CONTROL, BIT(5)|BIT(3)|BIT(1));
 262         PDEBUG(D_STREAM, "Started stream, status: %d", err);
 263
 264         return (err < 0) ? err : 0;
 265 }
 266
 267 static int pb0100_stop(struct sd *sd)
 268 {
 269         int err;
 270
 271         err = stv06xx_write_sensor(sd, PB_ABORTFRAME, 1);
 272
 273         if (err < 0)
 274                 goto out;
 275
 276         /* Set bit 1 to zero */
 277         err = stv06xx_write_sensor(sd, PB_CONTROL, BIT(5)|BIT(3));
 278
 279         PDEBUG(D_STREAM, "Halting stream");
 280 out:
 281         return (err < 0) ? err : 0;
 282 }
 283
 284 static void pb0100_disconnect(struct sd *sd)
 285 {
 286         sd->sensor = NULL;
 287         kfree(sd->sensor_priv);
 288 }
 289
 290 /* FIXME: Sort the init commands out and put them into tables,
 291           this is only for getting the camera to work */
 292 /* FIXME: No error handling for now,
 293           add this once the init has been converted to proper tables */
 294 static int pb0100_init(struct sd *sd)
 295 {
 296         stv06xx_write_bridge(sd, STV_REG00, 1);
 297         stv06xx_write_bridge(sd, STV_SCAN_RATE, 0);
 298
 299         /* Reset sensor */
 300         stv06xx_write_sensor(sd, PB_RESET, 1);
 301         stv06xx_write_sensor(sd, PB_RESET, 0);
 302
 303         /* Disable chip */
 304         stv06xx_write_sensor(sd, PB_CONTROL, BIT(5)|BIT(3));
 305
 306         /* Gain stuff...*/
 307         stv06xx_write_sensor(sd, PB_PREADCTRL, BIT(12)|BIT(10)|BIT(6));
 308         stv06xx_write_sensor(sd, PB_ADCGLOBALGAIN, 12);
 309
 310         /* Set up auto-exposure */
 311         /* ADC VREF_HI new setting for a transition
 312           from the Expose1 to the Expose2 setting */
 313         stv06xx_write_sensor(sd, PB_R28, 12);
 314         /* gain max for autoexposure */
 315         stv06xx_write_sensor(sd, PB_ADCMAXGAIN, 180);
 316         /* gain min for autoexposure  */
 317         stv06xx_write_sensor(sd, PB_ADCMINGAIN, 12);
 318         /* Maximum frame integration time (programmed into R8)
 319            allowed for auto-exposure routine */
 320         stv06xx_write_sensor(sd, PB_R54, 3);
 321         /* Minimum frame integration time (programmed into R8)
 322            allowed for auto-exposure routine */
 323         stv06xx_write_sensor(sd, PB_R55, 0);
 324         stv06xx_write_sensor(sd, PB_UPDATEINT, 1);
 325         /* R15  Expose0 (maximum that auto-exposure may use) */
 326         stv06xx_write_sensor(sd, PB_R15, 800);
 327         /* R17  Expose2 (minimum that auto-exposure may use) */
 328         stv06xx_write_sensor(sd, PB_R17, 10);
 329
 330         stv06xx_write_sensor(sd, PB_EXPGAIN, 0);
 331
 332         /* 0x14 */
 333         stv06xx_write_sensor(sd, PB_VOFFSET, 0);
 334         /* 0x0D */
 335         stv06xx_write_sensor(sd, PB_ADCGAINH, 11);
 336         /* Set black level (important!) */
 337         stv06xx_write_sensor(sd, PB_ADCGAINL, 0);
 338
 339         /* ??? */
 340         stv06xx_write_bridge(sd, STV_REG00, 0x11);
 341         stv06xx_write_bridge(sd, STV_REG03, 0x45);
 342         stv06xx_write_bridge(sd, STV_REG04, 0x07);
 343
 344         /* Scan/timing for the sensor */
 345         stv06xx_write_sensor(sd, PB_ROWSPEED, BIT(4)|BIT(3)|BIT(1));
 346         stv06xx_write_sensor(sd, PB_CFILLIN, 14);
 347         stv06xx_write_sensor(sd, PB_VBL, 0);
 348         stv06xx_write_sensor(sd, PB_FINTTIME, 0);
 349         stv06xx_write_sensor(sd, PB_RINTTIME, 123);
 350
 351         stv06xx_write_bridge(sd, STV_REG01, 0xc2);
 352         stv06xx_write_bridge(sd, STV_REG02, 0xb0);
 353         return 0;
 354 }
 355
 356 static int pb0100_dump(struct sd *sd)
 357 {
 358         return 0;
 359 }
 360
 361 static int pb0100_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
 362 {
 363         struct sd *sd = (struct sd *) gspca_dev;
 364         s32 *sensor_settings = sd->sensor_priv;
 365
 366         *val = sensor_settings[GAIN_IDX];
 367
 368         return 0;
 369 }
 370
 371 static int pb0100_set_gain(struct gspca_dev *gspca_dev, __s32 val)
 372 {
 373         int err;
 374         struct sd *sd = (struct sd *) gspca_dev;
 375         s32 *sensor_settings = sd->sensor_priv;
 376
 377         if (sensor_settings[AUTOGAIN_IDX])
 378                 return -EBUSY;
 379
 380         sensor_settings[GAIN_IDX] = val;
 381         err = stv06xx_write_sensor(sd, PB_G1GAIN, val);
 382         if (!err)
 383                 err = stv06xx_write_sensor(sd, PB_G2GAIN, val);
 384         PDEBUG(D_V4L2, "Set green gain to %d, status: %d", val, err);
 385
 386         if (!err)
 387                 err = pb0100_set_red_balance(gspca_dev,
 388                                              sensor_settings[RED_BALANCE_IDX]);
 389         if (!err)
 390                 err = pb0100_set_blue_balance(gspca_dev,
 391                                             sensor_settings[BLUE_BALANCE_IDX]);
 392
 393         return err;
 394 }
 395
 396 static int pb0100_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val)
 397 {
 398         struct sd *sd = (struct sd *) gspca_dev;
 399         s32 *sensor_settings = sd->sensor_priv;
 400
 401         *val = sensor_settings[RED_BALANCE_IDX];
 402
 403         return 0;
 404 }
 405
 406 static int pb0100_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
 407 {
 408         int err;
 409         struct sd *sd = (struct sd *) gspca_dev;
 410         s32 *sensor_settings = sd->sensor_priv;
 411
 412         if (sensor_settings[AUTOGAIN_IDX])
 413                 return -EBUSY;
 414
 415         sensor_settings[RED_BALANCE_IDX] = val;
 416         val += sensor_settings[GAIN_IDX];
 417         if (val < 0)
 418                 val = 0;
 419         else if (val > 255)
 420                 val = 255;
 421
 422         err = stv06xx_write_sensor(sd, PB_RGAIN, val);
 423         PDEBUG(D_V4L2, "Set red gain to %d, status: %d", val, err);
 424
 425         return err;
 426 }
 427
 428 static int pb0100_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val)
 429 {
 430         struct sd *sd = (struct sd *) gspca_dev;
 431         s32 *sensor_settings = sd->sensor_priv;
 432
 433         *val = sensor_settings[BLUE_BALANCE_IDX];
 434
 435         return 0;
 436 }
 437
 438 static int pb0100_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
 439 {
 440         int err;
 441         struct sd *sd = (struct sd *) gspca_dev;
 442         s32 *sensor_settings = sd->sensor_priv;
 443
 444         if (sensor_settings[AUTOGAIN_IDX])
 445                 return -EBUSY;
 446
 447         sensor_settings[BLUE_BALANCE_IDX] = val;
 448         val += sensor_settings[GAIN_IDX];
 449         if (val < 0)
 450                 val = 0;
 451         else if (val > 255)
 452                 val = 255;
 453
 454         err = stv06xx_write_sensor(sd, PB_BGAIN, val);
 455         PDEBUG(D_V4L2, "Set blue gain to %d, status: %d", val, err);
 456
 457         return err;
 458 }
 459
 460 static int pb0100_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
 461 {
 462         struct sd *sd = (struct sd *) gspca_dev;
 463         s32 *sensor_settings = sd->sensor_priv;
 464
 465         *val = sensor_settings[EXPOSURE_IDX];
 466
 467         return 0;
 468 }
 469
 470 static int pb0100_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
 471 {
 472         int err;
 473         struct sd *sd = (struct sd *) gspca_dev;
 474         s32 *sensor_settings = sd->sensor_priv;
 475
 476         if (sensor_settings[AUTOGAIN_IDX])
 477                 return -EBUSY;
 478
 479         sensor_settings[EXPOSURE_IDX] = val;
 480         err = stv06xx_write_sensor(sd, PB_RINTTIME, val);
 481         PDEBUG(D_V4L2, "Set exposure to %d, status: %d", val, err);
 482
 483         return err;
 484 }
 485
 486 static int pb0100_get_autogain(struct gspca_dev *gspca_dev, __s32 *val)
 487 {
 488         struct sd *sd = (struct sd *) gspca_dev;
 489         s32 *sensor_settings = sd->sensor_priv;
 490
 491         *val = sensor_settings[AUTOGAIN_IDX];
 492
 493         return 0;
 494 }
 495
 496 static int pb0100_set_autogain(struct gspca_dev *gspca_dev, __s32 val)
 497 {
 498         int err;
 499         struct sd *sd = (struct sd *) gspca_dev;
 500         s32 *sensor_settings = sd->sensor_priv;
 501
 502         sensor_settings[AUTOGAIN_IDX] = val;
 503         if (sensor_settings[AUTOGAIN_IDX]) {
 504                 if (sensor_settings[NATURAL_IDX])
 505                         val = BIT(6)|BIT(4)|BIT(0);
 506                 else
 507                         val = BIT(4)|BIT(0);
 508         } else
 509                 val = 0;
 510
 511         err = stv06xx_write_sensor(sd, PB_EXPGAIN, val);
 512         PDEBUG(D_V4L2, "Set autogain to %d (natural: %d), status: %d",
 513                sensor_settings[AUTOGAIN_IDX], sensor_settings[NATURAL_IDX],
 514                err);
 515
 516         return err;
 517 }
 518
 519 static int pb0100_get_autogain_target(struct gspca_dev *gspca_dev, __s32 *val)
 520 {
 521         struct sd *sd = (struct sd *) gspca_dev;
 522         s32 *sensor_settings = sd->sensor_priv;
 523
 524         *val = sensor_settings[AUTOGAIN_TARGET_IDX];
 525
 526         return 0;
 527 }
 528
 529 static int pb0100_set_autogain_target(struct gspca_dev *gspca_dev, __s32 val)
 530 {
 531         int err, totalpixels, brightpixels, darkpixels;
 532         struct sd *sd = (struct sd *) gspca_dev;
 533         s32 *sensor_settings = sd->sensor_priv;
 534
 535         sensor_settings[AUTOGAIN_TARGET_IDX] = val;
 536
 537         /* Number of pixels counted by the sensor when subsampling the pixels.
 538          * Slightly larger than the real value to avoid oscillation */
 539         totalpixels = gspca_dev->width * gspca_dev->height;
 540         totalpixels = totalpixels/(8*8) + totalpixels/(64*64);
 541
 542         brightpixels = (totalpixels * val) >> 8;
 543         darkpixels   = totalpixels - brightpixels;
 544         err = stv06xx_write_sensor(sd, PB_R21, brightpixels);
 545         if (!err)
 546                 err = stv06xx_write_sensor(sd, PB_R22, darkpixels);
 547
 548         PDEBUG(D_V4L2, "Set autogain target to %d, status: %d", val, err);
 549
 550         return err;
 551 }
 552
 553 static int pb0100_get_natural(struct gspca_dev *gspca_dev, __s32 *val)
 554 {
 555         struct sd *sd = (struct sd *) gspca_dev;
 556         s32 *sensor_settings = sd->sensor_priv;
 557
 558         *val = sensor_settings[NATURAL_IDX];
 559
 560         return 0;
 561 }
 562
 563 static int pb0100_set_natural(struct gspca_dev *gspca_dev, __s32 val)
 564 {
 565         struct sd *sd = (struct sd *) gspca_dev;
 566         s32 *sensor_settings = sd->sensor_priv;
 567
 568         sensor_settings[NATURAL_IDX] = val;
 569
 570         return pb0100_set_autogain(gspca_dev, sensor_settings[AUTOGAIN_IDX]);
 571 }