drivers/media/video/gspca/spca561.c

   1 /*
   2  * Sunplus spca561 subdriver
   3  *
   4  * Copyright (C) 2004 Michel Xhaard mxhaard@magic.fr
   5  *
   6  * V4L2 by Jean-Francois Moine <http://moinejf.free.fr>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  21  */
  22
  23 #define MODULE_NAME "spca561"
  24
  25 #include "gspca.h"
  26
  27 MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
  28 MODULE_DESCRIPTION("GSPCA/SPCA561 USB Camera Driver");
  29 MODULE_LICENSE("GPL");
  30
  31 /* specific webcam descriptor */
  32 struct sd {
  33         struct gspca_dev gspca_dev;     /* !! must be the first item */
  34
  35         __u16 exposure;                 /* rev12a only */
  36 #define EXPOSURE_MIN 1
  37 #define EXPOSURE_DEF 200
  38 #define EXPOSURE_MAX (4095 - 900) /* see set_exposure */
  39
  40         __u8 contrast;                  /* rev72a only */
  41 #define CONTRAST_MIN 0x00
  42 #define CONTRAST_DEF 0x20
  43 #define CONTRAST_MAX 0x3f
  44
  45         __u8 brightness;                /* rev72a only */
  46 #define BRIGHTNESS_MIN 0
  47 #define BRIGHTNESS_DEF 0x20
  48 #define BRIGHTNESS_MAX 0x3f
  49
  50         __u8 white;
  51 #define WHITE_MIN 1
  52 #define WHITE_DEF 0x40
  53 #define WHITE_MAX 0x7f
  54
  55         __u8 autogain;
  56 #define AUTOGAIN_MIN 0
  57 #define AUTOGAIN_DEF 1
  58 #define AUTOGAIN_MAX 1
  59
  60         __u8 gain;                      /* rev12a only */
  61 #define GAIN_MIN 0x0
  62 #define GAIN_DEF 0x24
  63 #define GAIN_MAX 0x24
  64
  65 #define EXPO12A_DEF 3
  66         __u8 expo12a;           /* expo/gain? for rev 12a */
  67
  68         __u8 chip_revision;
  69 #define Rev012A 0
  70 #define Rev072A 1
  71
  72         signed char ag_cnt;
  73 #define AG_CNT_START 13
  74 };
  75
  76 static const struct v4l2_pix_format sif_012a_mode[] = {
  77         {160, 120, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
  78                 .bytesperline = 160,
  79                 .sizeimage = 160 * 120,
  80                 .colorspace = V4L2_COLORSPACE_SRGB,
  81                 .priv = 3},
  82         {176, 144, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
  83                 .bytesperline = 176,
  84                 .sizeimage = 176 * 144,
  85                 .colorspace = V4L2_COLORSPACE_SRGB,
  86                 .priv = 2},
  87         {320, 240, V4L2_PIX_FMT_SPCA561, V4L2_FIELD_NONE,
  88                 .bytesperline = 320,
  89                 .sizeimage = 320 * 240 * 4 / 8,
  90                 .colorspace = V4L2_COLORSPACE_SRGB,
  91                 .priv = 1},
  92         {352, 288, V4L2_PIX_FMT_SPCA561, V4L2_FIELD_NONE,
  93                 .bytesperline = 352,
  94                 .sizeimage = 352 * 288 * 4 / 8,
  95                 .colorspace = V4L2_COLORSPACE_SRGB,
  96                 .priv = 0},
  97 };
  98
  99 static const struct v4l2_pix_format sif_072a_mode[] = {
 100         {160, 120, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
 101                 .bytesperline = 160,
 102                 .sizeimage = 160 * 120,
 103                 .colorspace = V4L2_COLORSPACE_SRGB,
 104                 .priv = 3},
 105         {176, 144, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
 106                 .bytesperline = 176,
 107                 .sizeimage = 176 * 144,
 108                 .colorspace = V4L2_COLORSPACE_SRGB,
 109                 .priv = 2},
 110         {320, 240, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
 111                 .bytesperline = 320,
 112                 .sizeimage = 320 * 240,
 113                 .colorspace = V4L2_COLORSPACE_SRGB,
 114                 .priv = 1},
 115         {352, 288, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
 116                 .bytesperline = 352,
 117                 .sizeimage = 352 * 288,
 118                 .colorspace = V4L2_COLORSPACE_SRGB,
 119                 .priv = 0},
 120 };
 121
 122 /*
 123  * Initialization data
 124  * I'm not very sure how to split initialization from open data
 125  * chunks. For now, we'll consider everything as initialization
 126  */
 127 /* Frame packet header offsets for the spca561 */
 128 #define SPCA561_OFFSET_SNAP 1
 129 #define SPCA561_OFFSET_TYPE 2
 130 #define SPCA561_OFFSET_COMPRESS 3
 131 #define SPCA561_OFFSET_FRAMSEQ   4
 132 #define SPCA561_OFFSET_GPIO 5
 133 #define SPCA561_OFFSET_USBBUFF 6
 134 #define SPCA561_OFFSET_WIN2GRAVE 7
 135 #define SPCA561_OFFSET_WIN2RAVE 8
 136 #define SPCA561_OFFSET_WIN2BAVE 9
 137 #define SPCA561_OFFSET_WIN2GBAVE 10
 138 #define SPCA561_OFFSET_WIN1GRAVE 11
 139 #define SPCA561_OFFSET_WIN1RAVE 12
 140 #define SPCA561_OFFSET_WIN1BAVE 13
 141 #define SPCA561_OFFSET_WIN1GBAVE 14
 142 #define SPCA561_OFFSET_FREQ 15
 143 #define SPCA561_OFFSET_VSYNC 16
 144 #define SPCA561_INDEX_I2C_BASE 0x8800
 145 #define SPCA561_SNAPBIT 0x20
 146 #define SPCA561_SNAPCTRL 0x40
 147
 148 static const u16 rev72a_reset[][2] = {
 149         {0x0000, 0x8114},       /* Software GPIO output data */
 150         {0x0001, 0x8114},       /* Software GPIO output data */
 151         {0x0000, 0x8112},       /* Some kind of reset */
 152         {}
 153 };
 154 static const __u16 rev72a_init_data1[][2] = {
 155         {0x0003, 0x8701},       /* PCLK clock delay adjustment */
 156         {0x0001, 0x8703},       /* HSYNC from cmos inverted */
 157         {0x0011, 0x8118},       /* Enable and conf sensor */
 158         {0x0001, 0x8118},       /* Conf sensor */
 159         {0x0092, 0x8804},       /* I know nothing about these */
 160         {0x0010, 0x8802},       /* 0x88xx registers, so I won't */
 161         {}
 162 };
 163 static const u16 rev72a_init_sensor1[][2] = {
 164         {0x0001, 0x000d},
 165         {0x0002, 0x0018},
 166         {0x0004, 0x0165},
 167         {0x0005, 0x0021},
 168         {0x0007, 0x00aa},
 169         {0x0020, 0x1504},
 170         {0x0039, 0x0002},
 171         {0x0035, 0x0010},
 172         {0x0009, 0x1049},
 173         {0x0028, 0x000b},
 174         {0x003b, 0x000f},
 175         {0x003c, 0x0000},
 176         {}
 177 };
 178 static const __u16 rev72a_init_data2[][2] = {
 179         {0x0018, 0x8601},       /* Pixel/line selection for color separation */
 180         {0x0000, 0x8602},       /* Optical black level for user setting */
 181         {0x0060, 0x8604},       /* Optical black horizontal offset */
 182         {0x0002, 0x8605},       /* Optical black vertical offset */
 183         {0x0000, 0x8603},       /* Non-automatic optical black level */
 184         {0x0002, 0x865b},       /* Horizontal offset for valid pixels */
 185         {0x0000, 0x865f},       /* Vertical valid pixels window (x2) */
 186         {0x00b0, 0x865d},       /* Horizontal valid pixels window (x2) */
 187         {0x0090, 0x865e},       /* Vertical valid lines window (x2) */
 188         {0x00e0, 0x8406},       /* Memory buffer threshold */
 189         {0x0000, 0x8660},       /* Compensation memory stuff */
 190         {0x0002, 0x8201},       /* Output address for r/w serial EEPROM */
 191         {0x0008, 0x8200},       /* Clear valid bit for serial EEPROM */
 192         {0x0001, 0x8200},       /* OprMode to be executed by hardware */
 193 /* from ms-win */
 194         {0x0000, 0x8611},       /* R offset for white balance */
 195         {0x00fd, 0x8612},       /* Gr offset for white balance */
 196         {0x0003, 0x8613},       /* B offset for white balance */
 197         {0x0000, 0x8614},       /* Gb offset for white balance */
 198 /* from ms-win */
 199         {0x0035, 0x8651},       /* R gain for white balance */
 200         {0x0040, 0x8652},       /* Gr gain for white balance */
 201         {0x005f, 0x8653},       /* B gain for white balance */
 202         {0x0040, 0x8654},       /* Gb gain for white balance */
 203         {0x0002, 0x8502},       /* Maximum average bit rate stuff */
 204         {0x0011, 0x8802},
 205
 206         {0x0087, 0x8700},       /* Set master clock (96Mhz????) */
 207         {0x0081, 0x8702},       /* Master clock output enable */
 208
 209         {0x0000, 0x8500},       /* Set image type (352x288 no compression) */
 210         /* Originally was 0x0010 (352x288 compression) */
 211
 212         {0x0002, 0x865b},       /* Horizontal offset for valid pixels */
 213         {0x0003, 0x865c},       /* Vertical offset for valid lines */
 214         {}
 215 };
 216 static const u16 rev72a_init_sensor2[][2] = {
 217         {0x0003, 0x0121},
 218         {0x0004, 0x0165},
 219         {0x0005, 0x002f},       /* blanking control column */
 220         {0x0006, 0x0000},       /* blanking mode row*/
 221         {0x000a, 0x0002},
 222         {0x0009, 0x1061},       /* setexposure times && pixel clock
 223                                  * 0001 0 | 000 0110 0001 */
 224         {0x0035, 0x0014},
 225         {}
 226 };
 227
 228 /******************** QC Express etch2 stuff ********************/
 229 static const __u16 Pb100_1map8300[][2] = {
 230         /* reg, value */
 231         {0x8320, 0x3304},
 232
 233         {0x8303, 0x0125},       /* image area */
 234         {0x8304, 0x0169},
 235         {0x8328, 0x000b},
 236         {0x833c, 0x0001},               /*fixme: win:07*/
 237
 238         {0x832f, 0x1904},               /*fixme: was 0419*/
 239         {0x8307, 0x00aa},
 240         {0x8301, 0x0003},
 241         {0x8302, 0x000e},
 242         {}
 243 };
 244 static const __u16 Pb100_2map8300[][2] = {
 245         /* reg, value */
 246         {0x8339, 0x0000},
 247         {0x8307, 0x00aa},
 248         {}
 249 };
 250
 251 static const __u16 spca561_161rev12A_data1[][2] = {
 252         {0x29, 0x8118},         /* white balance - was 21 */
 253         {0x08, 0x8114},         /* white balance - was 01 */
 254         {0x0e, 0x8112},         /* white balance - was 00 */
 255         {0x00, 0x8102},         /* white balance - new */
 256         {0x92, 0x8804},
 257         {0x04, 0x8802},         /* windows uses 08 */
 258         {}
 259 };
 260 static const __u16 spca561_161rev12A_data2[][2] = {
 261         {0x21, 0x8118},
 262         {0x10, 0x8500},
 263         {0x07, 0x8601},
 264         {0x07, 0x8602},
 265         {0x04, 0x8501},
 266         {0x21, 0x8118},
 267
 268         {0x07, 0x8201},         /* windows uses 02 */
 269         {0x08, 0x8200},
 270         {0x01, 0x8200},
 271
 272         {0x00, 0x8114},
 273         {0x01, 0x8114},         /* windows uses 00 */
 274
 275         {0x90, 0x8604},
 276         {0x00, 0x8605},
 277         {0xb0, 0x8603},
 278
 279         /* sensor gains */
 280         {0x07, 0x8601},         /* white balance - new */
 281         {0x07, 0x8602},         /* white balance - new */
 282         {0x00, 0x8610},         /* *red */
 283         {0x00, 0x8611},         /* 3f   *green */
 284         {0x00, 0x8612},         /* green *blue */
 285         {0x00, 0x8613},         /* blue *green */
 286         {0x43, 0x8614},         /* green *red - white balance - was 0x35 */
 287         {0x40, 0x8615},         /* 40   *green - white balance - was 0x35 */
 288         {0x71, 0x8616},         /* 7a   *blue - white balance - was 0x35 */
 289         {0x40, 0x8617},         /* 40   *green - white balance - was 0x35 */
 290
 291         {0x0c, 0x8620},         /* 0c */
 292         {0xc8, 0x8631},         /* c8 */
 293         {0xc8, 0x8634},         /* c8 */
 294         {0x23, 0x8635},         /* 23 */
 295         {0x1f, 0x8636},         /* 1f */
 296         {0xdd, 0x8637},         /* dd */
 297         {0xe1, 0x8638},         /* e1 */
 298         {0x1d, 0x8639},         /* 1d */
 299         {0x21, 0x863a},         /* 21 */
 300         {0xe3, 0x863b},         /* e3 */
 301         {0xdf, 0x863c},         /* df */
 302         {0xf0, 0x8505},
 303         {0x32, 0x850a},
 304 /*      {0x99, 0x8700},          * - white balance - new (removed) */
 305         {}
 306 };
 307
 308 static void reg_w_val(struct usb_device *dev, __u16 index, __u8 value)
 309 {
 310         int ret;
 311
 312         ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 313                               0,                /* request */
 314                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 315                               value, index, NULL, 0, 500);
 316         PDEBUG(D_USBO, "reg write: 0x%02x:0x%02x", index, value);
 317         if (ret < 0)
 318                 PDEBUG(D_ERR, "reg write: error %d", ret);
 319 }
 320
 321 static void write_vector(struct gspca_dev *gspca_dev,
 322                         const __u16 data[][2])
 323 {
 324         struct usb_device *dev = gspca_dev->dev;
 325         int i;
 326
 327         i = 0;
 328         while (data[i][1] != 0) {
 329                 reg_w_val(dev, data[i][1], data[i][0]);
 330                 i++;
 331         }
 332 }
 333
 334 /* read 'len' bytes to gspca_dev->usb_buf */
 335 static void reg_r(struct gspca_dev *gspca_dev,
 336                   __u16 index, __u16 length)
 337 {
 338         usb_control_msg(gspca_dev->dev,
 339                         usb_rcvctrlpipe(gspca_dev->dev, 0),
 340                         0,                      /* request */
 341                         USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 342                         0,                      /* value */
 343                         index, gspca_dev->usb_buf, length, 500);
 344 }
 345
 346 /* write 'len' bytes from gspca_dev->usb_buf */
 347 static void reg_w_buf(struct gspca_dev *gspca_dev,
 348                       __u16 index, __u16 len)
 349 {
 350         usb_control_msg(gspca_dev->dev,
 351                         usb_sndctrlpipe(gspca_dev->dev, 0),
 352                         0,                      /* request */
 353                         USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 354                         0,                      /* value */
 355                         index, gspca_dev->usb_buf, len, 500);
 356 }
 357
 358 static void i2c_write(struct gspca_dev *gspca_dev, __u16 value, __u16 reg)
 359 {
 360         int retry = 60;
 361
 362         reg_w_val(gspca_dev->dev, 0x8801, reg);
 363         reg_w_val(gspca_dev->dev, 0x8805, value);
 364         reg_w_val(gspca_dev->dev, 0x8800, value >> 8);
 365         do {
 366                 reg_r(gspca_dev, 0x8803, 1);
 367                 if (!gspca_dev->usb_buf[0])
 368                         return;
 369                 msleep(10);
 370         } while (--retry);
 371 }
 372
 373 static int i2c_read(struct gspca_dev *gspca_dev, __u16 reg, __u8 mode)
 374 {
 375         int retry = 60;
 376         __u8 value;
 377
 378         reg_w_val(gspca_dev->dev, 0x8804, 0x92);
 379         reg_w_val(gspca_dev->dev, 0x8801, reg);
 380         reg_w_val(gspca_dev->dev, 0x8802, mode | 0x01);
 381         do {
 382                 reg_r(gspca_dev, 0x8803, 1);
 383                 if (!gspca_dev->usb_buf[0]) {
 384                         reg_r(gspca_dev, 0x8800, 1);
 385                         value = gspca_dev->usb_buf[0];
 386                         reg_r(gspca_dev, 0x8805, 1);
 387                         return ((int) value << 8) | gspca_dev->usb_buf[0];
 388                 }
 389                 msleep(10);
 390         } while (--retry);
 391         return -1;
 392 }
 393
 394 static void sensor_mapwrite(struct gspca_dev *gspca_dev,
 395                             const __u16 (*sensormap)[2])
 396 {
 397         while ((*sensormap)[0]) {
 398                 gspca_dev->usb_buf[0] = (*sensormap)[1];
 399                 gspca_dev->usb_buf[1] = (*sensormap)[1] >> 8;
 400                 reg_w_buf(gspca_dev, (*sensormap)[0], 2);
 401                 sensormap++;
 402         }
 403 }
 404
 405 static void write_sensor_72a(struct gspca_dev *gspca_dev,
 406                             const __u16 (*sensor)[2])
 407 {
 408         while ((*sensor)[0]) {
 409                 i2c_write(gspca_dev, (*sensor)[1], (*sensor)[0]);
 410                 sensor++;
 411         }
 412 }
 413
 414 static void init_161rev12A(struct gspca_dev *gspca_dev)
 415 {
 416         write_vector(gspca_dev, spca561_161rev12A_data1);
 417         sensor_mapwrite(gspca_dev, Pb100_1map8300);
 418 /*fixme: should be in sd_start*/
 419         write_vector(gspca_dev, spca561_161rev12A_data2);
 420         sensor_mapwrite(gspca_dev, Pb100_2map8300);
 421 }
 422
 423 /* this function is called at probe time */
 424 static int sd_config(struct gspca_dev *gspca_dev,
 425                      const struct usb_device_id *id)
 426 {
 427         struct sd *sd = (struct sd *) gspca_dev;
 428         struct cam *cam;
 429         __u16 vendor, product;
 430         __u8 data1, data2;
 431
 432         /* Read frm global register the USB product and vendor IDs, just to
 433          * prove that we can communicate with the device.  This works, which
 434          * confirms at we are communicating properly and that the device
 435          * is a 561. */
 436         reg_r(gspca_dev, 0x8104, 1);
 437         data1 = gspca_dev->usb_buf[0];
 438         reg_r(gspca_dev, 0x8105, 1);
 439         data2 = gspca_dev->usb_buf[0];
 440         vendor = (data2 << 8) | data1;
 441         reg_r(gspca_dev, 0x8106, 1);
 442         data1 = gspca_dev->usb_buf[0];
 443         reg_r(gspca_dev, 0x8107, 1);
 444         data2 = gspca_dev->usb_buf[0];
 445         product = (data2 << 8) | data1;
 446         if (vendor != id->idVendor || product != id->idProduct) {
 447                 PDEBUG(D_PROBE, "Bad vendor / product from device");
 448                 return -EINVAL;
 449         }
 450
 451         cam = &gspca_dev->cam;
 452         gspca_dev->nbalt = 7 + 1;       /* choose alternate 7 first */
 453
 454         sd->chip_revision = id->driver_info;
 455         if (sd->chip_revision == Rev012A) {
 456                 cam->cam_mode = sif_012a_mode;
 457                 cam->nmodes = ARRAY_SIZE(sif_012a_mode);
 458         } else {
 459                 cam->cam_mode = sif_072a_mode;
 460                 cam->nmodes = ARRAY_SIZE(sif_072a_mode);
 461         }
 462         sd->brightness = BRIGHTNESS_DEF;
 463         sd->contrast = CONTRAST_DEF;
 464         sd->white = WHITE_DEF;
 465         sd->exposure = EXPOSURE_DEF;
 466         sd->autogain = AUTOGAIN_DEF;
 467         sd->gain = GAIN_DEF;
 468         sd->expo12a = EXPO12A_DEF;
 469         return 0;
 470 }
 471
 472 /* this function is called at probe and resume time */
 473 static int sd_init_12a(struct gspca_dev *gspca_dev)
 474 {
 475         PDEBUG(D_STREAM, "Chip revision: 012a");
 476         init_161rev12A(gspca_dev);
 477         return 0;
 478 }
 479 static int sd_init_72a(struct gspca_dev *gspca_dev)
 480 {
 481         PDEBUG(D_STREAM, "Chip revision: 072a");
 482         write_vector(gspca_dev, rev72a_reset);
 483         msleep(200);
 484         write_vector(gspca_dev, rev72a_init_data1);
 485         write_sensor_72a(gspca_dev, rev72a_init_sensor1);
 486         write_vector(gspca_dev, rev72a_init_data2);
 487         write_sensor_72a(gspca_dev, rev72a_init_sensor2);
 488         reg_w_val(gspca_dev->dev, 0x8112, 0x30);
 489         return 0;
 490 }
 491
 492 /* rev 72a only */
 493 static void setbrightness(struct gspca_dev *gspca_dev)
 494 {
 495         struct sd *sd = (struct sd *) gspca_dev;
 496         struct usb_device *dev = gspca_dev->dev;
 497         __u8 value;
 498
 499         value = sd->brightness;
 500
 501         /* offsets for white balance */
 502         reg_w_val(dev, 0x8611, value);          /* R */
 503         reg_w_val(dev, 0x8612, value);          /* Gr */
 504         reg_w_val(dev, 0x8613, value);          /* B */
 505         reg_w_val(dev, 0x8614, value);          /* Gb */
 506 }
 507
 508 static void setwhite(struct gspca_dev *gspca_dev)
 509 {
 510         struct sd *sd = (struct sd *) gspca_dev;
 511         __u16 white;
 512         __u8 blue, red;
 513         __u16 reg;
 514
 515         /* try to emulate MS-win as possible */
 516         white = sd->white;
 517         red = 0x20 + white * 3 / 8;
 518         blue = 0x90 - white * 5 / 8;
 519         if (sd->chip_revision == Rev012A) {
 520                 reg = 0x8614;
 521         } else {
 522                 reg = 0x8651;
 523                 red += sd->contrast - 0x20;
 524                 blue += sd->contrast - 0x20;
 525         }
 526         reg_w_val(gspca_dev->dev, reg, red);
 527         reg_w_val(gspca_dev->dev, reg + 2, blue);
 528 }
 529
 530 static void setcontrast(struct gspca_dev *gspca_dev)
 531 {
 532         struct sd *sd = (struct sd *) gspca_dev;
 533         struct usb_device *dev = gspca_dev->dev;
 534         __u8 value;
 535
 536         if (sd->chip_revision != Rev072A)
 537                 return;
 538         value = sd->contrast + 0x20;
 539
 540         /* gains for white balance */
 541         setwhite(gspca_dev);
 542 /*      reg_w_val(dev, 0x8651, value);           * R - done by setwhite */
 543         reg_w_val(dev, 0x8652, value);          /* Gr */
 544 /*      reg_w_val(dev, 0x8653, value);           * B - done by setwhite */
 545         reg_w_val(dev, 0x8654, value);          /* Gb */
 546 }
 547
 548 /* rev 12a only */
 549 static void setexposure(struct gspca_dev *gspca_dev)
 550 {
 551         struct sd *sd = (struct sd *) gspca_dev;
 552         int expo;
 553         int clock_divider;
 554
 555         /* Register 0x8309 controls exposure for the spca561,
 556            the basic exposure setting goes from 1-2047, where 1 is completely
 557            dark and 2047 is very bright. It not only influences exposure but
 558            also the framerate (to allow for longer exposure) from 1 - 300 it
 559            only raises the exposure time then from 300 - 600 it halves the
 560            framerate to be able to further raise the exposure time and for every
 561            300 more it halves the framerate again. This allows for a maximum
 562            exposure time of circa 0.2 - 0.25 seconds (30 / (2000/3000) fps).
 563            Sometimes this is not enough, the 1-2047 uses bits 0-10, bits 11-12
 564            configure a divider for the base framerate which us used at the
 565            exposure setting of 1-300. These bits configure the base framerate
 566            according to the following formula: fps = 60 / (value + 2) */
 567         if (sd->exposure < 2048) {
 568                 expo = sd->exposure;
 569                 clock_divider = 0;
 570         } else {
 571                 /* Add 900 to make the 0 setting of the second part of the
 572                    exposure equal to the 2047 setting of the first part. */
 573                 expo = (sd->exposure - 2048) + 900;
 574                 clock_divider = 3;
 575         }
 576         expo |= clock_divider << 11;
 577         gspca_dev->usb_buf[0] = expo;
 578         gspca_dev->usb_buf[1] = expo >> 8;
 579         reg_w_buf(gspca_dev, 0x8309, 2);
 580 }
 581
 582 /* rev 12a only */
 583 static void setgain(struct gspca_dev *gspca_dev)
 584 {
 585         struct sd *sd = (struct sd *) gspca_dev;
 586
 587         gspca_dev->usb_buf[0] = sd->gain;
 588         gspca_dev->usb_buf[1] = 0;
 589         reg_w_buf(gspca_dev, 0x8335, 2);
 590 }
 591
 592 static void setautogain(struct gspca_dev *gspca_dev)
 593 {
 594         struct sd *sd = (struct sd *) gspca_dev;
 595
 596         if (sd->autogain)
 597                 sd->ag_cnt = AG_CNT_START;
 598         else
 599                 sd->ag_cnt = -1;
 600 }
 601
 602 static int sd_start_12a(struct gspca_dev *gspca_dev)
 603 {
 604         struct usb_device *dev = gspca_dev->dev;
 605         int mode;
 606         static const __u8 Reg8391[8] =
 607                 {0x92, 0x30, 0x20, 0x00, 0x0c, 0x00, 0x00, 0x00};
 608
 609         mode = gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv;
 610         if (mode <= 1) {
 611                 /* Use compression on 320x240 and above */
 612                 reg_w_val(dev, 0x8500, 0x10 | mode);
 613         } else {
 614                 /* I couldn't get the compression to work below 320x240
 615                  * Fortunately at these resolutions the bandwidth
 616                  * is sufficient to push raw frames at ~20fps */
 617                 reg_w_val(dev, 0x8500, mode);
 618         }               /* -- qq@kuku.eu.org */
 619
 620         gspca_dev->usb_buf[0] = 0xaa;
 621         gspca_dev->usb_buf[1] = 0x00;
 622         reg_w_buf(gspca_dev, 0x8307, 2);
 623         /* clock - lower 0x8X values lead to fps > 30 */
 624         reg_w_val(gspca_dev->dev, 0x8700, 0x8a);
 625                                         /* 0x8f 0x85 0x27 clock */
 626         reg_w_val(gspca_dev->dev, 0x8112, 0x1e | 0x20);
 627         reg_w_val(gspca_dev->dev, 0x850b, 0x03);
 628         memcpy(gspca_dev->usb_buf, Reg8391, 8);
 629         reg_w_buf(gspca_dev, 0x8391, 8);
 630         reg_w_buf(gspca_dev, 0x8390, 8);
 631         setwhite(gspca_dev);
 632         setautogain(gspca_dev);
 633 /*      setgain(gspca_dev);             */
 634         setexposure(gspca_dev);
 635         return 0;
 636 }
 637 static int sd_start_72a(struct gspca_dev *gspca_dev)
 638 {
 639         struct usb_device *dev = gspca_dev->dev;
 640         int Clck;
 641         int mode;
 642
 643         write_vector(gspca_dev, rev72a_reset);
 644         msleep(200);
 645         write_vector(gspca_dev, rev72a_init_data1);
 646         write_sensor_72a(gspca_dev, rev72a_init_sensor1);
 647
 648         mode = gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv;
 649         switch (mode) {
 650         default:
 651 /*      case 0:
 652         case 1: */
 653                 Clck = 0x25;
 654                 break;
 655         case 2:
 656                 Clck = 0x22;
 657                 break;
 658         case 3:
 659                 Clck = 0x21;
 660                 break;
 661         }
 662         reg_w_val(dev, 0x8500, mode);   /* mode */
 663         reg_w_val(dev, 0x8700, Clck);   /* 0x27 clock */
 664         write_sensor_72a(gspca_dev, rev72a_init_sensor2);
 665         setcontrast(gspca_dev);
 666 /*      setbrightness(gspca_dev);        * fixme: bad values */
 667         setautogain(gspca_dev);
 668         reg_w_val(dev, 0x8112, 0x10 | 0x20);
 669         return 0;
 670 }
 671
 672 static void sd_stopN(struct gspca_dev *gspca_dev)
 673 {
 674         struct sd *sd = (struct sd *) gspca_dev;
 675
 676         if (sd->chip_revision == Rev012A) {
 677                 reg_w_val(gspca_dev->dev, 0x8112, 0x0e);
 678         } else {
 679                 reg_w_val(gspca_dev->dev, 0x8112, 0x20);
 680 /*              reg_w_val(gspca_dev->dev, 0x8102, 0x00); ?? */
 681         }
 682 }
 683
 684 /* called on streamoff with alt 0 and on disconnect */
 685 static void sd_stop0(struct gspca_dev *gspca_dev)
 686 {
 687         struct sd *sd = (struct sd *) gspca_dev;
 688
 689         if (!gspca_dev->present)
 690                 return;
 691         if (sd->chip_revision == Rev012A) {
 692                 reg_w_val(gspca_dev->dev, 0x8118, 0x29);
 693                 reg_w_val(gspca_dev->dev, 0x8114, 0x08);
 694         }
 695 /*      reg_w_val(gspca_dev->dev, 0x8114, 0); */
 696 }
 697
 698 static void do_autogain(struct gspca_dev *gspca_dev)
 699 {
 700         struct sd *sd = (struct sd *) gspca_dev;
 701         int expotimes;
 702         int pixelclk;
 703         int gainG;
 704         __u8 R, Gr, Gb, B;
 705         int y;
 706         __u8 luma_mean = 110;
 707         __u8 luma_delta = 20;
 708         __u8 spring = 4;
 709
 710         if (sd->ag_cnt < 0)
 711                 return;
 712         if (--sd->ag_cnt >= 0)
 713                 return;
 714         sd->ag_cnt = AG_CNT_START;
 715
 716         switch (sd->chip_revision) {
 717         case Rev072A:
 718                 reg_r(gspca_dev, 0x8621, 1);
 719                 Gr = gspca_dev->usb_buf[0];
 720                 reg_r(gspca_dev, 0x8622, 1);
 721                 R = gspca_dev->usb_buf[0];
 722                 reg_r(gspca_dev, 0x8623, 1);
 723                 B = gspca_dev->usb_buf[0];
 724                 reg_r(gspca_dev, 0x8624, 1);
 725                 Gb = gspca_dev->usb_buf[0];
 726                 y = (77 * R + 75 * (Gr + Gb) + 29 * B) >> 8;
 727                 /* u= (128*B-(43*(Gr+Gb+R))) >> 8; */
 728                 /* v= (128*R-(53*(Gr+Gb))-21*B) >> 8; */
 729                 /* PDEBUG(D_CONF,"reading Y %d U %d V %d ",y,u,v); */
 730
 731                 if (y < luma_mean - luma_delta ||
 732                     y > luma_mean + luma_delta) {
 733                         expotimes = i2c_read(gspca_dev, 0x09, 0x10);
 734                         pixelclk = 0x0800;
 735                         expotimes = expotimes & 0x07ff;
 736                         /* PDEBUG(D_PACK,
 737                                 "Exposition Times 0x%03X Clock 0x%04X ",
 738                                 expotimes,pixelclk); */
 739                         gainG = i2c_read(gspca_dev, 0x35, 0x10);
 740                         /* PDEBUG(D_PACK,
 741                                 "reading Gain register %d", gainG); */
 742
 743                         expotimes += (luma_mean - y) >> spring;
 744                         gainG += (luma_mean - y) / 50;
 745                         /* PDEBUG(D_PACK,
 746                                 "compute expotimes %d gain %d",
 747                                 expotimes,gainG); */
 748
 749                         if (gainG > 0x3f)
 750                                 gainG = 0x3f;
 751                         else if (gainG < 3)
 752                                 gainG = 3;
 753                         i2c_write(gspca_dev, gainG, 0x35);
 754
 755                         if (expotimes > 0x0256)
 756                                 expotimes = 0x0256;
 757                         else if (expotimes < 3)
 758                                 expotimes = 3;
 759                         i2c_write(gspca_dev, expotimes | pixelclk, 0x09);
 760                 }
 761                 break;
 762         case Rev012A:
 763                 reg_r(gspca_dev, 0x8330, 2);
 764                 if (gspca_dev->usb_buf[1] > 0x08) {
 765                         gspca_dev->usb_buf[0] = ++sd->expo12a;
 766                         gspca_dev->usb_buf[1] = 0;
 767                         reg_w_buf(gspca_dev, 0x8339, 2);
 768                 } else if (gspca_dev->usb_buf[1] < 0x02) {
 769                         gspca_dev->usb_buf[0] = --sd->expo12a;
 770                         gspca_dev->usb_buf[1] = 0;
 771                         reg_w_buf(gspca_dev, 0x8339, 2);
 772                 }
 773                 break;
 774         }
 775 }
 776
 777 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 778                         struct gspca_frame *frame, /* target */
 779                         __u8 *data,             /* isoc packet */
 780                         int len)                /* iso packet length */
 781 {
 782         struct sd *sd = (struct sd *) gspca_dev;
 783
 784         len--;
 785         switch (*data++) {                      /* sequence number */
 786         case 0:                                 /* start of frame */
 787                 frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
 788                                         data, 0);
 789                 if (data[1] & 0x10) {
 790                         /* compressed bayer */
 791                         gspca_frame_add(gspca_dev, FIRST_PACKET,
 792                                         frame, data, len);
 793                 } else {
 794                         /* raw bayer (with a header, which we skip) */
 795                         if (sd->chip_revision == Rev012A) {
 796                                 data += 20;
 797                                 len -= 20;
 798                         } else {
 799                                 data += 16;
 800                                 len -= 16;
 801                         }
 802                         gspca_frame_add(gspca_dev, FIRST_PACKET,
 803                                                 frame, data, len);
 804                 }
 805                 return;
 806         case 0xff:                      /* drop (empty mpackets) */
 807                 return;
 808         }
 809         gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
 810 }
 811
 812 /* rev 72a only */
 813 static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
 814 {
 815         struct sd *sd = (struct sd *) gspca_dev;
 816
 817         sd->brightness = val;
 818         if (gspca_dev->streaming)
 819                 setbrightness(gspca_dev);
 820         return 0;
 821 }
 822
 823 static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
 824 {
 825         struct sd *sd = (struct sd *) gspca_dev;
 826
 827         *val = sd->brightness;
 828         return 0;
 829 }
 830
 831 /* rev 72a only */
 832 static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
 833 {
 834         struct sd *sd = (struct sd *) gspca_dev;
 835
 836         sd->contrast = val;
 837         if (gspca_dev->streaming)
 838                 setcontrast(gspca_dev);
 839         return 0;
 840 }
 841
 842 static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
 843 {
 844         struct sd *sd = (struct sd *) gspca_dev;
 845
 846         *val = sd->contrast;
 847         return 0;
 848 }
 849
 850 static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val)
 851 {
 852         struct sd *sd = (struct sd *) gspca_dev;
 853
 854         sd->autogain = val;
 855         if (gspca_dev->streaming)
 856                 setautogain(gspca_dev);
 857         return 0;
 858 }
 859
 860 static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val)
 861 {
 862         struct sd *sd = (struct sd *) gspca_dev;
 863
 864         *val = sd->autogain;
 865         return 0;
 866 }
 867
 868 static int sd_setwhite(struct gspca_dev *gspca_dev, __s32 val)
 869 {
 870         struct sd *sd = (struct sd *) gspca_dev;
 871
 872         sd->white = val;
 873         if (gspca_dev->streaming)
 874                 setwhite(gspca_dev);
 875         return 0;
 876 }
 877
 878 static int sd_getwhite(struct gspca_dev *gspca_dev, __s32 *val)
 879 {
 880         struct sd *sd = (struct sd *) gspca_dev;
 881
 882         *val = sd->white;
 883         return 0;
 884 }
 885
 886 /* rev12a only */
 887 static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val)
 888 {
 889         struct sd *sd = (struct sd *) gspca_dev;
 890
 891         sd->exposure = val;
 892         if (gspca_dev->streaming)
 893                 setexposure(gspca_dev);
 894         return 0;
 895 }
 896
 897 static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val)
 898 {
 899         struct sd *sd = (struct sd *) gspca_dev;
 900
 901         *val = sd->exposure;
 902         return 0;
 903 }
 904
 905 /* rev12a only */
 906 static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val)
 907 {
 908         struct sd *sd = (struct sd *) gspca_dev;
 909
 910         sd->gain = val;
 911         if (gspca_dev->streaming)
 912                 setgain(gspca_dev);
 913         return 0;
 914 }
 915
 916 static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val)
 917 {
 918         struct sd *sd = (struct sd *) gspca_dev;
 919
 920         *val = sd->gain;
 921         return 0;
 922 }
 923
 924 /* control tables */
 925 static struct ctrl sd_ctrls_12a[] = {
 926         {
 927             {
 928                 .id = V4L2_CID_DO_WHITE_BALANCE,
 929                 .type = V4L2_CTRL_TYPE_INTEGER,
 930                 .name = "White Balance",
 931                 .minimum = WHITE_MIN,
 932                 .maximum = WHITE_MAX,
 933                 .step = 1,
 934                 .default_value = WHITE_DEF,
 935             },
 936             .set = sd_setwhite,
 937             .get = sd_getwhite,
 938         },
 939         {
 940             {
 941                 .id = V4L2_CID_EXPOSURE,
 942                 .type = V4L2_CTRL_TYPE_INTEGER,
 943                 .name = "Exposure",
 944                 .minimum = EXPOSURE_MIN,
 945                 .maximum = EXPOSURE_MAX,
 946                 .step = 1,
 947                 .default_value = EXPOSURE_DEF,
 948             },
 949             .set = sd_setexposure,
 950             .get = sd_getexposure,
 951         },
 952         {
 953             {
 954                 .id = V4L2_CID_AUTOGAIN,
 955                 .type = V4L2_CTRL_TYPE_BOOLEAN,
 956                 .name = "Auto Gain",
 957                 .minimum = AUTOGAIN_MIN,
 958                 .maximum = AUTOGAIN_MAX,
 959                 .step = 1,
 960                 .default_value = AUTOGAIN_DEF,
 961             },
 962             .set = sd_setautogain,
 963             .get = sd_getautogain,
 964         },
 965         {
 966             {
 967                 .id = V4L2_CID_GAIN,
 968                 .type = V4L2_CTRL_TYPE_INTEGER,
 969                 .name = "Gain",
 970                 .minimum = GAIN_MIN,
 971                 .maximum = GAIN_MAX,
 972                 .step = 1,
 973                 .default_value = GAIN_DEF,
 974             },
 975             .set = sd_setgain,
 976             .get = sd_getgain,
 977         },
 978 };
 979
 980 static struct ctrl sd_ctrls_72a[] = {
 981         {
 982             {
 983                 .id = V4L2_CID_DO_WHITE_BALANCE,
 984                 .type = V4L2_CTRL_TYPE_INTEGER,
 985                 .name = "White Balance",
 986                 .minimum = WHITE_MIN,
 987                 .maximum = WHITE_MAX,
 988                 .step = 1,
 989                 .default_value = WHITE_DEF,
 990             },
 991             .set = sd_setwhite,
 992             .get = sd_getwhite,
 993         },
 994         {
 995            {
 996                 .id = V4L2_CID_BRIGHTNESS,
 997                 .type = V4L2_CTRL_TYPE_INTEGER,
 998                 .name = "Brightness",
 999                 .minimum = BRIGHTNESS_MIN,
1000                 .maximum = BRIGHTNESS_MAX,
1001                 .step = 1,
1002                 .default_value = BRIGHTNESS_DEF,
1003             },
1004             .set = sd_setbrightness,
1005             .get = sd_getbrightness,
1006         },
1007         {
1008             {
1009                 .id = V4L2_CID_CONTRAST,
1010                 .type = V4L2_CTRL_TYPE_INTEGER,
1011                 .name = "Contrast",
1012                 .minimum = CONTRAST_MIN,
1013                 .maximum = CONTRAST_MAX,
1014                 .step = 1,
1015                 .default_value = CONTRAST_DEF,
1016             },
1017             .set = sd_setcontrast,
1018             .get = sd_getcontrast,
1019         },
1020         {
1021             {
1022                 .id = V4L2_CID_AUTOGAIN,
1023                 .type = V4L2_CTRL_TYPE_BOOLEAN,
1024                 .name = "Auto Gain",
1025                 .minimum = AUTOGAIN_MIN,
1026                 .maximum = AUTOGAIN_MAX,
1027                 .step = 1,
1028                 .default_value = AUTOGAIN_DEF,
1029             },
1030             .set = sd_setautogain,
1031             .get = sd_getautogain,
1032         },
1033 };
1034
1035 /* sub-driver description */
1036 static const struct sd_desc sd_desc_12a = {
1037         .name = MODULE_NAME,
1038         .ctrls = sd_ctrls_12a,
1039         .nctrls = ARRAY_SIZE(sd_ctrls_12a),
1040         .config = sd_config,
1041         .init = sd_init_12a,
1042         .start = sd_start_12a,
1043         .stopN = sd_stopN,
1044         .stop0 = sd_stop0,
1045         .pkt_scan = sd_pkt_scan,
1046 /*      .dq_callback = do_autogain,      * fixme */
1047 };
1048 static const struct sd_desc sd_desc_72a = {
1049         .name = MODULE_NAME,
1050         .ctrls = sd_ctrls_72a,
1051         .nctrls = ARRAY_SIZE(sd_ctrls_72a),
1052         .config = sd_config,
1053         .init = sd_init_72a,
1054         .start = sd_start_72a,
1055         .stopN = sd_stopN,
1056         .stop0 = sd_stop0,
1057         .pkt_scan = sd_pkt_scan,
1058         .dq_callback = do_autogain,
1059 };
1060 static const struct sd_desc *sd_desc[2] = {
1061         &sd_desc_12a,
1062         &sd_desc_72a
1063 };
1064
1065 /* -- module initialisation -- */
1066 static const __devinitdata struct usb_device_id device_table[] = {
1067         {USB_DEVICE(0x041e, 0x401a), .driver_info = Rev072A},
1068         {USB_DEVICE(0x041e, 0x403b), .driver_info = Rev012A},
1069         {USB_DEVICE(0x0458, 0x7004), .driver_info = Rev072A},
1070         {USB_DEVICE(0x046d, 0x0928), .driver_info = Rev012A},
1071         {USB_DEVICE(0x046d, 0x0929), .driver_info = Rev012A},
1072         {USB_DEVICE(0x046d, 0x092a), .driver_info = Rev012A},
1073         {USB_DEVICE(0x046d, 0x092b), .driver_info = Rev012A},
1074         {USB_DEVICE(0x046d, 0x092c), .driver_info = Rev012A},
1075         {USB_DEVICE(0x046d, 0x092d), .driver_info = Rev012A},
1076         {USB_DEVICE(0x046d, 0x092e), .driver_info = Rev012A},
1077         {USB_DEVICE(0x046d, 0x092f), .driver_info = Rev012A},
1078         {USB_DEVICE(0x04fc, 0x0561), .driver_info = Rev072A},
1079         {USB_DEVICE(0x060b, 0xa001), .driver_info = Rev072A},
1080         {USB_DEVICE(0x10fd, 0x7e50), .driver_info = Rev072A},
1081         {USB_DEVICE(0xabcd, 0xcdee), .driver_info = Rev072A},
1082         {}
1083 };
1084
1085 MODULE_DEVICE_TABLE(usb, device_table);
1086
1087 /* -- device connect -- */
1088 static int sd_probe(struct usb_interface *intf,
1089                     const struct usb_device_id *id)
1090 {
1091         return gspca_dev_probe(intf, id,
1092                                 sd_desc[id->driver_info],
1093                                 sizeof(struct sd),
1094                                THIS_MODULE);
1095 }
1096
1097 static struct usb_driver sd_driver = {
1098         .name = MODULE_NAME,
1099         .id_table = device_table,
1100         .probe = sd_probe,
1101         .disconnect = gspca_disconnect,
1102 #ifdef CONFIG_PM
1103         .suspend = gspca_suspend,
1104         .resume = gspca_resume,
1105 #endif
1106 };
1107
1108 /* -- module insert / remove -- */
1109 static int __init sd_mod_init(void)
1110 {
1111         int ret;
1112         ret = usb_register(&sd_driver);
1113         if (ret < 0)
1114                 return ret;
1115         PDEBUG(D_PROBE, "registered");
1116         return 0;
1117 }
1118 static void __exit sd_mod_exit(void)
1119 {
1120         usb_deregister(&sd_driver);
1121         PDEBUG(D_PROBE, "deregistered");
1122 }
1123
1124 module_init(sd_mod_init);
1125 module_exit(sd_mod_exit);