drivers/media/video/gspca/ov534.c

   1 /*
   2  * ov534-ov772x gspca driver
   3  *
   4  * Copyright (C) 2008 Antonio Ospite <ospite@studenti.unina.it>
   5  * Copyright (C) 2008 Jim Paris <jim@jtan.com>
   6  * Copyright (C) 2009 Jean-Francois Moine http://moinejf.free.fr
   7  *
   8  * Based on a prototype written by Mark Ferrell <majortrips@gmail.com>
   9  * USB protocol reverse engineered by Jim Paris <jim@jtan.com>
  10  * https://jim.sh/svn/jim/devl/playstation/ps3/eye/test/
  11  *
  12  * PS3 Eye camera enhanced by Richard Kaswy http://kaswy.free.fr
  13  * PS3 Eye camera - brightness, contrast, awb, agc, aec controls
  14  *                  added by Max Thrun <bear24rw@gmail.com>
  15  *
  16  * This program is free software; you can redistribute it and/or modify
  17  * it under the terms of the GNU General Public License as published by
  18  * the Free Software Foundation; either version 2 of the License, or
  19  * any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful,
  22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  24  * GNU General Public License for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License
  27  * along with this program; if not, write to the Free Software
  28  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  29  */
  30
  31 #define MODULE_NAME "ov534"
  32
  33 #include "gspca.h"
  34
  35 #define OV534_REG_ADDRESS       0xf1    /* sensor address */
  36 #define OV534_REG_SUBADDR       0xf2
  37 #define OV534_REG_WRITE         0xf3
  38 #define OV534_REG_READ          0xf4
  39 #define OV534_REG_OPERATION     0xf5
  40 #define OV534_REG_STATUS        0xf6
  41
  42 #define OV534_OP_WRITE_3        0x37
  43 #define OV534_OP_WRITE_2        0x33
  44 #define OV534_OP_READ_2         0xf9
  45
  46 #define CTRL_TIMEOUT 500
  47
  48 MODULE_AUTHOR("Antonio Ospite <ospite@studenti.unina.it>");
  49 MODULE_DESCRIPTION("GSPCA/OV534 USB Camera Driver");
  50 MODULE_LICENSE("GPL");
  51
  52 /* specific webcam descriptor */
  53 struct sd {
  54         struct gspca_dev gspca_dev;     /* !! must be the first item */
  55         __u32 last_pts;
  56         u16 last_fid;
  57         u8 frame_rate;
  58
  59         u8 brightness;
  60         u8 contrast;
  61         u8 gain;
  62         u8 exposure;
  63         u8 agc;
  64         u8 awb;
  65         u8 aec;
  66         s8 sharpness;
  67         u8 hflip;
  68         u8 vflip;
  69         u8 freqfltr;
  70 };
  71
  72 /* V4L2 controls supported by the driver */
  73 static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val);
  74 static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val);
  75 static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val);
  76 static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val);
  77 static int sd_setagc(struct gspca_dev *gspca_dev, __s32 val);
  78 static int sd_getagc(struct gspca_dev *gspca_dev, __s32 *val);
  79 static int sd_setsharpness(struct gspca_dev *gspca_dev, __s32 val);
  80 static int sd_getsharpness(struct gspca_dev *gspca_dev, __s32 *val);
  81 static int sd_sethflip(struct gspca_dev *gspca_dev, __s32 val);
  82 static int sd_gethflip(struct gspca_dev *gspca_dev, __s32 *val);
  83 static int sd_setvflip(struct gspca_dev *gspca_dev, __s32 val);
  84 static int sd_getvflip(struct gspca_dev *gspca_dev, __s32 *val);
  85 static int sd_setawb(struct gspca_dev *gspca_dev, __s32 val);
  86 static int sd_getawb(struct gspca_dev *gspca_dev, __s32 *val);
  87 static int sd_setaec(struct gspca_dev *gspca_dev, __s32 val);
  88 static int sd_getaec(struct gspca_dev *gspca_dev, __s32 *val);
  89 static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
  90 static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
  91 static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
  92 static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val);
  93 static int sd_setfreqfltr(struct gspca_dev *gspca_dev, __s32 val);
  94 static int sd_getfreqfltr(struct gspca_dev *gspca_dev, __s32 *val);
  95 static int sd_querymenu(struct gspca_dev *gspca_dev,
  96                 struct v4l2_querymenu *menu);
  97
  98 static const struct ctrl sd_ctrls[] = {
  99         {       /* 0 */
 100                 {
 101                         .id      = V4L2_CID_BRIGHTNESS,
 102                         .type    = V4L2_CTRL_TYPE_INTEGER,
 103                         .name    = "Brightness",
 104                         .minimum = 0,
 105                         .maximum = 255,
 106                         .step    = 1,
 107 #define BRIGHTNESS_DEF 0
 108                         .default_value = BRIGHTNESS_DEF,
 109                 },
 110                 .set = sd_setbrightness,
 111                 .get = sd_getbrightness,
 112         },
 113         {       /* 1 */
 114                 {
 115                         .id      = V4L2_CID_CONTRAST,
 116                         .type    = V4L2_CTRL_TYPE_INTEGER,
 117                         .name    = "Contrast",
 118                         .minimum = 0,
 119                         .maximum = 255,
 120                         .step    = 1,
 121 #define CONTRAST_DEF 32
 122                         .default_value = CONTRAST_DEF,
 123                 },
 124                 .set = sd_setcontrast,
 125                 .get = sd_getcontrast,
 126         },
 127         {       /* 2 */
 128                 {
 129                         .id      = V4L2_CID_GAIN,
 130                         .type    = V4L2_CTRL_TYPE_INTEGER,
 131                         .name    = "Main Gain",
 132                         .minimum = 0,
 133                         .maximum = 63,
 134                         .step    = 1,
 135 #define GAIN_DEF 20
 136                         .default_value = GAIN_DEF,
 137                 },
 138                 .set = sd_setgain,
 139                 .get = sd_getgain,
 140         },
 141         {       /* 3 */
 142                 {
 143                         .id      = V4L2_CID_EXPOSURE,
 144                         .type    = V4L2_CTRL_TYPE_INTEGER,
 145                         .name    = "Exposure",
 146                         .minimum = 0,
 147                         .maximum = 255,
 148                         .step    = 1,
 149 #define EXPO_DEF 120
 150                         .default_value = EXPO_DEF,
 151                 },
 152                 .set = sd_setexposure,
 153                 .get = sd_getexposure,
 154         },
 155         {       /* 4 */
 156                 {
 157                         .id      = V4L2_CID_AUTOGAIN,
 158                         .type    = V4L2_CTRL_TYPE_BOOLEAN,
 159                         .name    = "Auto Gain",
 160                         .minimum = 0,
 161                         .maximum = 1,
 162                         .step    = 1,
 163 #define AGC_DEF 1
 164                         .default_value = AGC_DEF,
 165                 },
 166                 .set = sd_setagc,
 167                 .get = sd_getagc,
 168         },
 169 #define AWB_IDX 5
 170         {       /* 5 */
 171                 {
 172                         .id      = V4L2_CID_AUTO_WHITE_BALANCE,
 173                         .type    = V4L2_CTRL_TYPE_BOOLEAN,
 174                         .name    = "Auto White Balance",
 175                         .minimum = 0,
 176                         .maximum = 1,
 177                         .step    = 1,
 178 #define AWB_DEF 1
 179                         .default_value = AWB_DEF,
 180                 },
 181                 .set = sd_setawb,
 182                 .get = sd_getawb,
 183         },
 184         {       /* 6 */
 185                 {
 186                         .id      = V4L2_CID_EXPOSURE_AUTO,
 187                         .type    = V4L2_CTRL_TYPE_BOOLEAN,
 188                         .name    = "Auto Exposure",
 189                         .minimum = 0,
 190                         .maximum = 1,
 191                         .step    = 1,
 192 #define AEC_DEF 1
 193                         .default_value = AEC_DEF,
 194                 },
 195                 .set = sd_setaec,
 196                 .get = sd_getaec,
 197         },
 198         {       /* 7 */
 199                 {
 200                         .id      = V4L2_CID_SHARPNESS,
 201                         .type    = V4L2_CTRL_TYPE_INTEGER,
 202                         .name    = "Sharpness",
 203                         .minimum = 0,
 204                         .maximum = 63,
 205                         .step    = 1,
 206 #define SHARPNESS_DEF 0
 207                         .default_value = SHARPNESS_DEF,
 208                 },
 209                 .set = sd_setsharpness,
 210                 .get = sd_getsharpness,
 211         },
 212         {       /* 8 */
 213                 {
 214                         .id      = V4L2_CID_HFLIP,
 215                         .type    = V4L2_CTRL_TYPE_BOOLEAN,
 216                         .name    = "HFlip",
 217                         .minimum = 0,
 218                         .maximum = 1,
 219                         .step    = 1,
 220 #define HFLIP_DEF 0
 221                         .default_value = HFLIP_DEF,
 222                 },
 223                 .set = sd_sethflip,
 224                 .get = sd_gethflip,
 225         },
 226         {       /* 9 */
 227                 {
 228                         .id      = V4L2_CID_VFLIP,
 229                         .type    = V4L2_CTRL_TYPE_BOOLEAN,
 230                         .name    = "VFlip",
 231                         .minimum = 0,
 232                         .maximum = 1,
 233                         .step    = 1,
 234 #define VFLIP_DEF 0
 235                         .default_value = VFLIP_DEF,
 236                 },
 237                 .set = sd_setvflip,
 238                 .get = sd_getvflip,
 239         },
 240         {       /* 10 */
 241                 {
 242                         .id      = V4L2_CID_POWER_LINE_FREQUENCY,
 243                         .type    = V4L2_CTRL_TYPE_MENU,
 244                         .name    = "Light Frequency Filter",
 245                         .minimum = 0,
 246                         .maximum = 1,
 247                         .step    = 1,
 248 #define FREQFLTR_DEF 0
 249                         .default_value = FREQFLTR_DEF,
 250                 },
 251                 .set = sd_setfreqfltr,
 252                 .get = sd_getfreqfltr,
 253         },
 254 };
 255
 256 static const struct v4l2_pix_format ov772x_mode[] = {
 257         {320, 240, V4L2_PIX_FMT_YUYV, V4L2_FIELD_NONE,
 258          .bytesperline = 320 * 2,
 259          .sizeimage = 320 * 240 * 2,
 260          .colorspace = V4L2_COLORSPACE_SRGB,
 261          .priv = 1},
 262         {640, 480, V4L2_PIX_FMT_YUYV, V4L2_FIELD_NONE,
 263          .bytesperline = 640 * 2,
 264          .sizeimage = 640 * 480 * 2,
 265          .colorspace = V4L2_COLORSPACE_SRGB,
 266          .priv = 0},
 267 };
 268
 269 static const u8 qvga_rates[] = {125, 100, 75, 60, 50, 40, 30};
 270 static const u8 vga_rates[] = {60, 50, 40, 30, 15};
 271
 272 static const struct framerates ov772x_framerates[] = {
 273         { /* 320x240 */
 274                 .rates = qvga_rates,
 275                 .nrates = ARRAY_SIZE(qvga_rates),
 276         },
 277         { /* 640x480 */
 278                 .rates = vga_rates,
 279                 .nrates = ARRAY_SIZE(vga_rates),
 280         },
 281 };
 282
 283 static const u8 bridge_init[][2] = {
 284         { 0xc2, 0x0c },
 285         { 0x88, 0xf8 },
 286         { 0xc3, 0x69 },
 287         { 0x89, 0xff },
 288         { 0x76, 0x03 },
 289         { 0x92, 0x01 },
 290         { 0x93, 0x18 },
 291         { 0x94, 0x10 },
 292         { 0x95, 0x10 },
 293         { 0xe2, 0x00 },
 294         { 0xe7, 0x3e },
 295
 296         { 0x96, 0x00 },
 297
 298         { 0x97, 0x20 },
 299         { 0x97, 0x20 },
 300         { 0x97, 0x20 },
 301         { 0x97, 0x0a },
 302         { 0x97, 0x3f },
 303         { 0x97, 0x4a },
 304         { 0x97, 0x20 },
 305         { 0x97, 0x15 },
 306         { 0x97, 0x0b },
 307
 308         { 0x8e, 0x40 },
 309         { 0x1f, 0x81 },
 310         { 0x34, 0x05 },
 311         { 0xe3, 0x04 },
 312         { 0x88, 0x00 },
 313         { 0x89, 0x00 },
 314         { 0x76, 0x00 },
 315         { 0xe7, 0x2e },
 316         { 0x31, 0xf9 },
 317         { 0x25, 0x42 },
 318         { 0x21, 0xf0 },
 319
 320         { 0x1c, 0x00 },
 321         { 0x1d, 0x40 },
 322         { 0x1d, 0x02 }, /* payload size 0x0200 * 4 = 2048 bytes */
 323         { 0x1d, 0x00 }, /* payload size */
 324
 325         { 0x1d, 0x02 }, /* frame size 0x025800 * 4 = 614400 */
 326         { 0x1d, 0x58 }, /* frame size */
 327         { 0x1d, 0x00 }, /* frame size */
 328
 329         { 0x1c, 0x0a },
 330         { 0x1d, 0x08 }, /* turn on UVC header */
 331         { 0x1d, 0x0e }, /* .. */
 332
 333         { 0x8d, 0x1c },
 334         { 0x8e, 0x80 },
 335         { 0xe5, 0x04 },
 336
 337         { 0xc0, 0x50 },
 338         { 0xc1, 0x3c },
 339         { 0xc2, 0x0c },
 340 };
 341 static const u8 sensor_init[][2] = {
 342         { 0x12, 0x80 },
 343         { 0x11, 0x01 },
 344 /*fixme: better have a delay?*/
 345         { 0x11, 0x01 },
 346         { 0x11, 0x01 },
 347         { 0x11, 0x01 },
 348         { 0x11, 0x01 },
 349         { 0x11, 0x01 },
 350         { 0x11, 0x01 },
 351         { 0x11, 0x01 },
 352         { 0x11, 0x01 },
 353         { 0x11, 0x01 },
 354         { 0x11, 0x01 },
 355
 356         { 0x3d, 0x03 },
 357         { 0x17, 0x26 },
 358         { 0x18, 0xa0 },
 359         { 0x19, 0x07 },
 360         { 0x1a, 0xf0 },
 361         { 0x32, 0x00 },
 362         { 0x29, 0xa0 },
 363         { 0x2c, 0xf0 },
 364         { 0x65, 0x20 },
 365         { 0x11, 0x01 },
 366         { 0x42, 0x7f },
 367         { 0x63, 0xaa },         /* AWB - was e0 */
 368         { 0x64, 0xff },
 369         { 0x66, 0x00 },
 370         { 0x13, 0xf0 },         /* com8 */
 371         { 0x0d, 0x41 },
 372         { 0x0f, 0xc5 },
 373         { 0x14, 0x11 },
 374
 375         { 0x22, 0x7f },
 376         { 0x23, 0x03 },
 377         { 0x24, 0x40 },
 378         { 0x25, 0x30 },
 379         { 0x26, 0xa1 },
 380         { 0x2a, 0x00 },
 381         { 0x2b, 0x00 },
 382         { 0x6b, 0xaa },
 383         { 0x13, 0xff },         /* AWB */
 384
 385         { 0x90, 0x05 },
 386         { 0x91, 0x01 },
 387         { 0x92, 0x03 },
 388         { 0x93, 0x00 },
 389         { 0x94, 0x60 },
 390         { 0x95, 0x3c },
 391         { 0x96, 0x24 },
 392         { 0x97, 0x1e },
 393         { 0x98, 0x62 },
 394         { 0x99, 0x80 },
 395         { 0x9a, 0x1e },
 396         { 0x9b, 0x08 },
 397         { 0x9c, 0x20 },
 398         { 0x9e, 0x81 },
 399
 400         { 0xa6, 0x04 },
 401         { 0x7e, 0x0c },
 402         { 0x7f, 0x16 },
 403         { 0x80, 0x2a },
 404         { 0x81, 0x4e },
 405         { 0x82, 0x61 },
 406         { 0x83, 0x6f },
 407         { 0x84, 0x7b },
 408         { 0x85, 0x86 },
 409         { 0x86, 0x8e },
 410         { 0x87, 0x97 },
 411         { 0x88, 0xa4 },
 412         { 0x89, 0xaf },
 413         { 0x8a, 0xc5 },
 414         { 0x8b, 0xd7 },
 415         { 0x8c, 0xe8 },
 416         { 0x8d, 0x20 },
 417
 418         { 0x0c, 0x90 },
 419
 420         { 0x2b, 0x00 },
 421         { 0x22, 0x7f },
 422         { 0x23, 0x03 },
 423         { 0x11, 0x01 },
 424         { 0x0c, 0xd0 },
 425         { 0x64, 0xff },
 426         { 0x0d, 0x41 },
 427
 428         { 0x14, 0x41 },
 429         { 0x0e, 0xcd },
 430         { 0xac, 0xbf },
 431         { 0x8e, 0x00 },         /* De-noise threshold */
 432         { 0x0c, 0xd0 }
 433 };
 434 static const u8 bridge_start_vga[][2] = {
 435         {0x1c, 0x00},
 436         {0x1d, 0x40},
 437         {0x1d, 0x02},
 438         {0x1d, 0x00},
 439         {0x1d, 0x02},
 440         {0x1d, 0x58},
 441         {0x1d, 0x00},
 442         {0xc0, 0x50},
 443         {0xc1, 0x3c},
 444 };
 445 static const u8 sensor_start_vga[][2] = {
 446         {0x12, 0x00},
 447         {0x17, 0x26},
 448         {0x18, 0xa0},
 449         {0x19, 0x07},
 450         {0x1a, 0xf0},
 451         {0x29, 0xa0},
 452         {0x2c, 0xf0},
 453         {0x65, 0x20},
 454 };
 455 static const u8 bridge_start_qvga[][2] = {
 456         {0x1c, 0x00},
 457         {0x1d, 0x40},
 458         {0x1d, 0x02},
 459         {0x1d, 0x00},
 460         {0x1d, 0x01},
 461         {0x1d, 0x4b},
 462         {0x1d, 0x00},
 463         {0xc0, 0x28},
 464         {0xc1, 0x1e},
 465 };
 466 static const u8 sensor_start_qvga[][2] = {
 467         {0x12, 0x40},
 468         {0x17, 0x3f},
 469         {0x18, 0x50},
 470         {0x19, 0x03},
 471         {0x1a, 0x78},
 472         {0x29, 0x50},
 473         {0x2c, 0x78},
 474         {0x65, 0x2f},
 475 };
 476
 477 static void ov534_reg_write(struct gspca_dev *gspca_dev, u16 reg, u8 val)
 478 {
 479         struct usb_device *udev = gspca_dev->dev;
 480         int ret;
 481
 482         if (gspca_dev->usb_err < 0)
 483                 return;
 484
 485         PDEBUG(D_USBO, "SET 01 0000 %04x %02x", reg, val);
 486         gspca_dev->usb_buf[0] = val;
 487         ret = usb_control_msg(udev,
 488                               usb_sndctrlpipe(udev, 0),
 489                               0x01,
 490                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 491                               0x00, reg, gspca_dev->usb_buf, 1, CTRL_TIMEOUT);
 492         if (ret < 0) {
 493                 err("write failed %d", ret);
 494                 gspca_dev->usb_err = ret;
 495         }
 496 }
 497
 498 static u8 ov534_reg_read(struct gspca_dev *gspca_dev, u16 reg)
 499 {
 500         struct usb_device *udev = gspca_dev->dev;
 501         int ret;
 502
 503         if (gspca_dev->usb_err < 0)
 504                 return 0;
 505         ret = usb_control_msg(udev,
 506                               usb_rcvctrlpipe(udev, 0),
 507                               0x01,
 508                               USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 509                               0x00, reg, gspca_dev->usb_buf, 1, CTRL_TIMEOUT);
 510         PDEBUG(D_USBI, "GET 01 0000 %04x %02x", reg, gspca_dev->usb_buf[0]);
 511         if (ret < 0) {
 512                 err("read failed %d", ret);
 513                 gspca_dev->usb_err = ret;
 514         }
 515         return gspca_dev->usb_buf[0];
 516 }
 517
 518 /* Two bits control LED: 0x21 bit 7 and 0x23 bit 7.
 519  * (direction and output)? */
 520 static void ov534_set_led(struct gspca_dev *gspca_dev, int status)
 521 {
 522         u8 data;
 523
 524         PDEBUG(D_CONF, "led status: %d", status);
 525
 526         data = ov534_reg_read(gspca_dev, 0x21);
 527         data |= 0x80;
 528         ov534_reg_write(gspca_dev, 0x21, data);
 529
 530         data = ov534_reg_read(gspca_dev, 0x23);
 531         if (status)
 532                 data |= 0x80;
 533         else
 534                 data &= ~0x80;
 535
 536         ov534_reg_write(gspca_dev, 0x23, data);
 537
 538         if (!status) {
 539                 data = ov534_reg_read(gspca_dev, 0x21);
 540                 data &= ~0x80;
 541                 ov534_reg_write(gspca_dev, 0x21, data);
 542         }
 543 }
 544
 545 static int sccb_check_status(struct gspca_dev *gspca_dev)
 546 {
 547         u8 data;
 548         int i;
 549
 550         for (i = 0; i < 5; i++) {
 551                 data = ov534_reg_read(gspca_dev, OV534_REG_STATUS);
 552
 553                 switch (data) {
 554                 case 0x00:
 555                         return 1;
 556                 case 0x04:
 557                         return 0;
 558                 case 0x03:
 559                         break;
 560                 default:
 561                         PDEBUG(D_ERR, "sccb status 0x%02x, attempt %d/5",
 562                                data, i + 1);
 563                 }
 564         }
 565         return 0;
 566 }
 567
 568 static void sccb_reg_write(struct gspca_dev *gspca_dev, u8 reg, u8 val)
 569 {
 570         PDEBUG(D_USBO, "sccb write: %02x %02x", reg, val);
 571         ov534_reg_write(gspca_dev, OV534_REG_SUBADDR, reg);
 572         ov534_reg_write(gspca_dev, OV534_REG_WRITE, val);
 573         ov534_reg_write(gspca_dev, OV534_REG_OPERATION, OV534_OP_WRITE_3);
 574
 575         if (!sccb_check_status(gspca_dev)) {
 576                 err("sccb_reg_write failed");
 577                 gspca_dev->usb_err = -EIO;
 578         }
 579 }
 580
 581 static u8 sccb_reg_read(struct gspca_dev *gspca_dev, u16 reg)
 582 {
 583         ov534_reg_write(gspca_dev, OV534_REG_SUBADDR, reg);
 584         ov534_reg_write(gspca_dev, OV534_REG_OPERATION, OV534_OP_WRITE_2);
 585         if (!sccb_check_status(gspca_dev))
 586                 err("sccb_reg_read failed 1");
 587
 588         ov534_reg_write(gspca_dev, OV534_REG_OPERATION, OV534_OP_READ_2);
 589         if (!sccb_check_status(gspca_dev))
 590                 err("sccb_reg_read failed 2");
 591
 592         return ov534_reg_read(gspca_dev, OV534_REG_READ);
 593 }
 594
 595 /* output a bridge sequence (reg - val) */
 596 static void reg_w_array(struct gspca_dev *gspca_dev,
 597                         const u8 (*data)[2], int len)
 598 {
 599         while (--len >= 0) {
 600                 ov534_reg_write(gspca_dev, (*data)[0], (*data)[1]);
 601                 data++;
 602         }
 603 }
 604
 605 /* output a sensor sequence (reg - val) */
 606 static void sccb_w_array(struct gspca_dev *gspca_dev,
 607                         const u8 (*data)[2], int len)
 608 {
 609         while (--len >= 0) {
 610                 if ((*data)[0] != 0xff) {
 611                         sccb_reg_write(gspca_dev, (*data)[0], (*data)[1]);
 612                 } else {
 613                         sccb_reg_read(gspca_dev, (*data)[1]);
 614                         sccb_reg_write(gspca_dev, 0xff, 0x00);
 615                 }
 616                 data++;
 617         }
 618 }
 619
 620 /* ov772x specific controls */
 621 static void set_frame_rate(struct gspca_dev *gspca_dev)
 622 {
 623         struct sd *sd = (struct sd *) gspca_dev;
 624         int i;
 625         struct rate_s {
 626                 u8 fps;
 627                 u8 r11;
 628                 u8 r0d;
 629                 u8 re5;
 630         };
 631         const struct rate_s *r;
 632         static const struct rate_s rate_0[] = { /* 640x480 */
 633                 {60, 0x01, 0xc1, 0x04},
 634                 {50, 0x01, 0x41, 0x02},
 635                 {40, 0x02, 0xc1, 0x04},
 636                 {30, 0x04, 0x81, 0x02},
 637                 {15, 0x03, 0x41, 0x04},
 638         };
 639         static const struct rate_s rate_1[] = { /* 320x240 */
 640                 {125, 0x02, 0x81, 0x02},
 641                 {100, 0x02, 0xc1, 0x04},
 642                 {75, 0x03, 0xc1, 0x04},
 643                 {60, 0x04, 0xc1, 0x04},
 644                 {50, 0x02, 0x41, 0x04},
 645                 {40, 0x03, 0x41, 0x04},
 646                 {30, 0x04, 0x41, 0x04},
 647         };
 648
 649         if (gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv == 0) {
 650                 r = rate_0;
 651                 i = ARRAY_SIZE(rate_0);
 652         } else {
 653                 r = rate_1;
 654                 i = ARRAY_SIZE(rate_1);
 655         }
 656         while (--i > 0) {
 657                 if (sd->frame_rate >= r->fps)
 658                         break;
 659                 r++;
 660         }
 661
 662         sccb_reg_write(gspca_dev, 0x11, r->r11);
 663         sccb_reg_write(gspca_dev, 0x0d, r->r0d);
 664         ov534_reg_write(gspca_dev, 0xe5, r->re5);
 665
 666         PDEBUG(D_PROBE, "frame_rate: %d", r->fps);
 667 }
 668
 669 static void setbrightness(struct gspca_dev *gspca_dev)
 670 {
 671         struct sd *sd = (struct sd *) gspca_dev;
 672
 673         sccb_reg_write(gspca_dev, 0x9b, sd->brightness);
 674 }
 675
 676 static void setcontrast(struct gspca_dev *gspca_dev)
 677 {
 678         struct sd *sd = (struct sd *) gspca_dev;
 679
 680         sccb_reg_write(gspca_dev, 0x9c, sd->contrast);
 681 }
 682
 683 static void setgain(struct gspca_dev *gspca_dev)
 684 {
 685         struct sd *sd = (struct sd *) gspca_dev;
 686         u8 val;
 687
 688         if (sd->agc)
 689                 return;
 690
 691         val = sd->gain;
 692         switch (val & 0x30) {
 693         case 0x00:
 694                 val &= 0x0f;
 695                 break;
 696         case 0x10:
 697                 val &= 0x0f;
 698                 val |= 0x30;
 699                 break;
 700         case 0x20:
 701                 val &= 0x0f;
 702                 val |= 0x70;
 703                 break;
 704         default:
 705 /*      case 0x30: */
 706                 val &= 0x0f;
 707                 val |= 0xf0;
 708                 break;
 709         }
 710         sccb_reg_write(gspca_dev, 0x00, val);
 711 }
 712
 713 static void setexposure(struct gspca_dev *gspca_dev)
 714 {
 715         struct sd *sd = (struct sd *) gspca_dev;
 716         u8 val;
 717
 718         if (sd->aec)
 719                 return;
 720
 721         /* 'val' is one byte and represents half of the exposure value we are
 722          * going to set into registers, a two bytes value:
 723          *
 724          *    MSB: ((u16) val << 1) >> 8   == val >> 7
 725          *    LSB: ((u16) val << 1) & 0xff == val << 1
 726          */
 727         val = sd->exposure;
 728         sccb_reg_write(gspca_dev, 0x08, val >> 7);
 729         sccb_reg_write(gspca_dev, 0x10, val << 1);
 730 }
 731
 732 static void setagc(struct gspca_dev *gspca_dev)
 733 {
 734         struct sd *sd = (struct sd *) gspca_dev;
 735
 736         if (sd->agc) {
 737                 sccb_reg_write(gspca_dev, 0x13,
 738                                 sccb_reg_read(gspca_dev, 0x13) | 0x04);
 739                 sccb_reg_write(gspca_dev, 0x64,
 740                                 sccb_reg_read(gspca_dev, 0x64) | 0x03);
 741         } else {
 742                 sccb_reg_write(gspca_dev, 0x13,
 743                                 sccb_reg_read(gspca_dev, 0x13) & ~0x04);
 744                 sccb_reg_write(gspca_dev, 0x64,
 745                                 sccb_reg_read(gspca_dev, 0x64) & ~0x03);
 746
 747                 setgain(gspca_dev);
 748         }
 749 }
 750
 751 static void setawb(struct gspca_dev *gspca_dev)
 752 {
 753         struct sd *sd = (struct sd *) gspca_dev;
 754
 755         if (sd->awb) {
 756                 sccb_reg_write(gspca_dev, 0x13,
 757                                 sccb_reg_read(gspca_dev, 0x13) | 0x02);
 758                 sccb_reg_write(gspca_dev, 0x63,
 759                                 sccb_reg_read(gspca_dev, 0x63) | 0xc0);
 760         } else {
 761                 sccb_reg_write(gspca_dev, 0x13,
 762                                 sccb_reg_read(gspca_dev, 0x13) & ~0x02);
 763                 sccb_reg_write(gspca_dev, 0x63,
 764                                 sccb_reg_read(gspca_dev, 0x63) & ~0xc0);
 765         }
 766 }
 767
 768 static void setaec(struct gspca_dev *gspca_dev)
 769 {
 770         struct sd *sd = (struct sd *) gspca_dev;
 771
 772         if (sd->aec)
 773                 sccb_reg_write(gspca_dev, 0x13,
 774                                 sccb_reg_read(gspca_dev, 0x13) | 0x01);
 775         else {
 776                 sccb_reg_write(gspca_dev, 0x13,
 777                                 sccb_reg_read(gspca_dev, 0x13) & ~0x01);
 778                 setexposure(gspca_dev);
 779         }
 780 }
 781
 782 static void setsharpness(struct gspca_dev *gspca_dev)
 783 {
 784         struct sd *sd = (struct sd *) gspca_dev;
 785         u8 val;
 786
 787         val = sd->sharpness;
 788         sccb_reg_write(gspca_dev, 0x91, val);   /* Auto de-noise threshold */
 789         sccb_reg_write(gspca_dev, 0x8e, val);   /* De-noise threshold */
 790 }
 791
 792 static void sethflip(struct gspca_dev *gspca_dev)
 793 {
 794         struct sd *sd = (struct sd *) gspca_dev;
 795
 796         if (sd->hflip == 0)
 797                 sccb_reg_write(gspca_dev, 0x0c,
 798                                 sccb_reg_read(gspca_dev, 0x0c) | 0x40);
 799         else
 800                 sccb_reg_write(gspca_dev, 0x0c,
 801                                 sccb_reg_read(gspca_dev, 0x0c) & ~0x40);
 802 }
 803
 804 static void setvflip(struct gspca_dev *gspca_dev)
 805 {
 806         struct sd *sd = (struct sd *) gspca_dev;
 807
 808         if (sd->vflip == 0)
 809                 sccb_reg_write(gspca_dev, 0x0c,
 810                                 sccb_reg_read(gspca_dev, 0x0c) | 0x80);
 811         else
 812                 sccb_reg_write(gspca_dev, 0x0c,
 813                                 sccb_reg_read(gspca_dev, 0x0c) & ~0x80);
 814 }
 815
 816 static void setfreqfltr(struct gspca_dev *gspca_dev)
 817 {
 818         struct sd *sd = (struct sd *) gspca_dev;
 819
 820         if (sd->freqfltr == 0)
 821                 sccb_reg_write(gspca_dev, 0x2b, 0x00);
 822         else
 823                 sccb_reg_write(gspca_dev, 0x2b, 0x9e);
 824 }
 825
 826
 827 /* this function is called at probe time */
 828 static int sd_config(struct gspca_dev *gspca_dev,
 829                      const struct usb_device_id *id)
 830 {
 831         struct sd *sd = (struct sd *) gspca_dev;
 832         struct cam *cam;
 833
 834         cam = &gspca_dev->cam;
 835
 836         cam->cam_mode = ov772x_mode;
 837         cam->nmodes = ARRAY_SIZE(ov772x_mode);
 838         cam->mode_framerates = ov772x_framerates;
 839
 840         cam->bulk = 1;
 841         cam->bulk_size = 16384;
 842         cam->bulk_nurbs = 2;
 843
 844         sd->frame_rate = 30;
 845
 846         sd->brightness = BRIGHTNESS_DEF;
 847         sd->contrast = CONTRAST_DEF;
 848         sd->gain = GAIN_DEF;
 849         sd->exposure = EXPO_DEF;
 850 #if AGC_DEF != 0
 851         sd->agc = AGC_DEF;
 852 #else
 853         gspca_dev->ctrl_inac |= (1 << AWB_IDX);
 854 #endif
 855         sd->awb = AWB_DEF;
 856         sd->aec = AEC_DEF;
 857         sd->sharpness = SHARPNESS_DEF;
 858         sd->hflip = HFLIP_DEF;
 859         sd->vflip = VFLIP_DEF;
 860         sd->freqfltr = FREQFLTR_DEF;
 861
 862         return 0;
 863 }
 864
 865 /* this function is called at probe and resume time */
 866 static int sd_init(struct gspca_dev *gspca_dev)
 867 {
 868         u16 sensor_id;
 869
 870         /* reset bridge */
 871         ov534_reg_write(gspca_dev, 0xe7, 0x3a);
 872         ov534_reg_write(gspca_dev, 0xe0, 0x08);
 873         msleep(100);
 874
 875         /* initialize the sensor address */
 876         ov534_reg_write(gspca_dev, OV534_REG_ADDRESS, 0x42);
 877
 878         /* reset sensor */
 879         sccb_reg_write(gspca_dev, 0x12, 0x80);
 880         msleep(10);
 881
 882         /* probe the sensor */
 883         sccb_reg_read(gspca_dev, 0x0a);
 884         sensor_id = sccb_reg_read(gspca_dev, 0x0a) << 8;
 885         sccb_reg_read(gspca_dev, 0x0b);
 886         sensor_id |= sccb_reg_read(gspca_dev, 0x0b);
 887         PDEBUG(D_PROBE, "Sensor ID: %04x", sensor_id);
 888
 889         /* initialize */
 890         reg_w_array(gspca_dev, bridge_init,
 891                         ARRAY_SIZE(bridge_init));
 892         ov534_set_led(gspca_dev, 1);
 893         sccb_w_array(gspca_dev, sensor_init,
 894                         ARRAY_SIZE(sensor_init));
 895         ov534_reg_write(gspca_dev, 0xe0, 0x09);
 896         ov534_set_led(gspca_dev, 0);
 897         set_frame_rate(gspca_dev);
 898
 899         return gspca_dev->usb_err;
 900 }
 901
 902 static int sd_start(struct gspca_dev *gspca_dev)
 903 {
 904         int mode;
 905
 906         mode = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
 907         if (mode != 0) {        /* 320x240 */
 908                 reg_w_array(gspca_dev, bridge_start_qvga,
 909                                 ARRAY_SIZE(bridge_start_qvga));
 910                 sccb_w_array(gspca_dev, sensor_start_qvga,
 911                                 ARRAY_SIZE(sensor_start_qvga));
 912         } else {                /* 640x480 */
 913                 reg_w_array(gspca_dev, bridge_start_vga,
 914                                 ARRAY_SIZE(bridge_start_vga));
 915                 sccb_w_array(gspca_dev, sensor_start_vga,
 916                                 ARRAY_SIZE(sensor_start_vga));
 917         }
 918         set_frame_rate(gspca_dev);
 919
 920         setagc(gspca_dev);
 921         setawb(gspca_dev);
 922         setaec(gspca_dev);
 923         setgain(gspca_dev);
 924         setexposure(gspca_dev);
 925         setbrightness(gspca_dev);
 926         setcontrast(gspca_dev);
 927         setsharpness(gspca_dev);
 928         setvflip(gspca_dev);
 929         sethflip(gspca_dev);
 930         setfreqfltr(gspca_dev);
 931
 932         ov534_set_led(gspca_dev, 1);
 933         ov534_reg_write(gspca_dev, 0xe0, 0x00);
 934         return gspca_dev->usb_err;
 935 }
 936
 937 static void sd_stopN(struct gspca_dev *gspca_dev)
 938 {
 939         ov534_reg_write(gspca_dev, 0xe0, 0x09);
 940         ov534_set_led(gspca_dev, 0);
 941 }
 942
 943 /* Values for bmHeaderInfo (Video and Still Image Payload Headers, 2.4.3.3) */
 944 #define UVC_STREAM_EOH  (1 << 7)
 945 #define UVC_STREAM_ERR  (1 << 6)
 946 #define UVC_STREAM_STI  (1 << 5)
 947 #define UVC_STREAM_RES  (1 << 4)
 948 #define UVC_STREAM_SCR  (1 << 3)
 949 #define UVC_STREAM_PTS  (1 << 2)
 950 #define UVC_STREAM_EOF  (1 << 1)
 951 #define UVC_STREAM_FID  (1 << 0)
 952
 953 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 954                         u8 *data, int len)
 955 {
 956         struct sd *sd = (struct sd *) gspca_dev;
 957         __u32 this_pts;
 958         u16 this_fid;
 959         int remaining_len = len;
 960
 961         do {
 962                 len = min(remaining_len, 2048);
 963
 964                 /* Payloads are prefixed with a UVC-style header.  We
 965                    consider a frame to start when the FID toggles, or the PTS
 966                    changes.  A frame ends when EOF is set, and we've received
 967                    the correct number of bytes. */
 968
 969                 /* Verify UVC header.  Header length is always 12 */
 970                 if (data[0] != 12 || len < 12) {
 971                         PDEBUG(D_PACK, "bad header");
 972                         goto discard;
 973                 }
 974
 975                 /* Check errors */
 976                 if (data[1] & UVC_STREAM_ERR) {
 977                         PDEBUG(D_PACK, "payload error");
 978                         goto discard;
 979                 }
 980
 981                 /* Extract PTS and FID */
 982                 if (!(data[1] & UVC_STREAM_PTS)) {
 983                         PDEBUG(D_PACK, "PTS not present");
 984                         goto discard;
 985                 }
 986                 this_pts = (data[5] << 24) | (data[4] << 16)
 987                                                 | (data[3] << 8) | data[2];
 988                 this_fid = (data[1] & UVC_STREAM_FID) ? 1 : 0;
 989
 990                 /* If PTS or FID has changed, start a new frame. */
 991                 if (this_pts != sd->last_pts || this_fid != sd->last_fid) {
 992                         if (gspca_dev->last_packet_type == INTER_PACKET)
 993                                 gspca_frame_add(gspca_dev, LAST_PACKET,
 994                                                 NULL, 0);
 995                         sd->last_pts = this_pts;
 996                         sd->last_fid = this_fid;
 997                         gspca_frame_add(gspca_dev, FIRST_PACKET,
 998                                         data + 12, len - 12);
 999                 /* If this packet is marked as EOF, end the frame */
1000                 } else if (data[1] & UVC_STREAM_EOF) {
1001                         sd->last_pts = 0;
1002                         if (gspca_dev->image_len + len - 12 !=
1003                             gspca_dev->width * gspca_dev->height * 2) {
1004                                 PDEBUG(D_PACK, "wrong sized frame");
1005                                 goto discard;
1006                         }
1007                         gspca_frame_add(gspca_dev, LAST_PACKET,
1008                                         data + 12, len - 12);
1009                 } else {
1010
1011                         /* Add the data from this payload */
1012                         gspca_frame_add(gspca_dev, INTER_PACKET,
1013                                         data + 12, len - 12);
1014                 }
1015
1016                 /* Done this payload */
1017                 goto scan_next;
1018
1019 discard:
1020                 /* Discard data until a new frame starts. */
1021                 gspca_dev->last_packet_type = DISCARD_PACKET;
1022
1023 scan_next:
1024                 remaining_len -= len;
1025                 data += len;
1026         } while (remaining_len > 0);
1027 }
1028
1029 /* controls */
1030 static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val)
1031 {
1032         struct sd *sd = (struct sd *) gspca_dev;
1033
1034         sd->gain = val;
1035         if (gspca_dev->streaming)
1036                 setgain(gspca_dev);
1037         return 0;
1038 }
1039
1040 static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val)
1041 {
1042         struct sd *sd = (struct sd *) gspca_dev;
1043
1044         *val = sd->gain;
1045         return 0;
1046 }
1047
1048 static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val)
1049 {
1050         struct sd *sd = (struct sd *) gspca_dev;
1051
1052         sd->exposure = val;
1053         if (gspca_dev->streaming)
1054                 setexposure(gspca_dev);
1055         return 0;
1056 }
1057
1058 static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val)
1059 {
1060         struct sd *sd = (struct sd *) gspca_dev;
1061
1062         *val = sd->exposure;
1063         return 0;
1064 }
1065
1066 static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
1067 {
1068         struct sd *sd = (struct sd *) gspca_dev;
1069
1070         sd->brightness = val;
1071         if (gspca_dev->streaming)
1072                 setbrightness(gspca_dev);
1073         return 0;
1074 }
1075
1076 static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
1077 {
1078         struct sd *sd = (struct sd *) gspca_dev;
1079
1080         *val = sd->brightness;
1081         return 0;
1082 }
1083
1084 static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
1085 {
1086         struct sd *sd = (struct sd *) gspca_dev;
1087
1088         sd->contrast = val;
1089         if (gspca_dev->streaming)
1090                 setcontrast(gspca_dev);
1091         return 0;
1092 }
1093
1094 static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
1095 {
1096         struct sd *sd = (struct sd *) gspca_dev;
1097
1098         *val = sd->contrast;
1099         return 0;
1100 }
1101
1102 static int sd_setagc(struct gspca_dev *gspca_dev, __s32 val)
1103 {
1104         struct sd *sd = (struct sd *) gspca_dev;
1105
1106         sd->agc = val;
1107
1108         if (gspca_dev->streaming) {
1109
1110                 /* the auto white balance control works only
1111                  * when auto gain is set */
1112                 if (val)
1113                         gspca_dev->ctrl_inac &= ~(1 << AWB_IDX);
1114                 else
1115                         gspca_dev->ctrl_inac |= (1 << AWB_IDX);
1116                 setagc(gspca_dev);
1117         }
1118         return 0;
1119 }
1120
1121 static int sd_getagc(struct gspca_dev *gspca_dev, __s32 *val)
1122 {
1123         struct sd *sd = (struct sd *) gspca_dev;
1124
1125         *val = sd->agc;
1126         return 0;
1127 }
1128
1129 static int sd_setawb(struct gspca_dev *gspca_dev, __s32 val)
1130 {
1131         struct sd *sd = (struct sd *) gspca_dev;
1132
1133         sd->awb = val;
1134         if (gspca_dev->streaming)
1135                 setawb(gspca_dev);
1136         return 0;
1137 }
1138
1139 static int sd_getawb(struct gspca_dev *gspca_dev, __s32 *val)
1140 {
1141         struct sd *sd = (struct sd *) gspca_dev;
1142
1143         *val = sd->awb;
1144         return 0;
1145 }
1146
1147 static int sd_setaec(struct gspca_dev *gspca_dev, __s32 val)
1148 {
1149         struct sd *sd = (struct sd *) gspca_dev;
1150
1151         sd->aec = val;
1152         if (gspca_dev->streaming)
1153                 setaec(gspca_dev);
1154         return 0;
1155 }
1156
1157 static int sd_getaec(struct gspca_dev *gspca_dev, __s32 *val)
1158 {
1159         struct sd *sd = (struct sd *) gspca_dev;
1160
1161         *val = sd->aec;
1162         return 0;
1163 }
1164
1165 static int sd_setsharpness(struct gspca_dev *gspca_dev, __s32 val)
1166 {
1167         struct sd *sd = (struct sd *) gspca_dev;
1168
1169         sd->sharpness = val;
1170         if (gspca_dev->streaming)
1171                 setsharpness(gspca_dev);
1172         return 0;
1173 }
1174
1175 static int sd_getsharpness(struct gspca_dev *gspca_dev, __s32 *val)
1176 {
1177         struct sd *sd = (struct sd *) gspca_dev;
1178
1179         *val = sd->sharpness;
1180         return 0;
1181 }
1182
1183 static int sd_sethflip(struct gspca_dev *gspca_dev, __s32 val)
1184 {
1185         struct sd *sd = (struct sd *) gspca_dev;
1186
1187         sd->hflip = val;
1188         if (gspca_dev->streaming)
1189                 sethflip(gspca_dev);
1190         return 0;
1191 }
1192
1193 static int sd_gethflip(struct gspca_dev *gspca_dev, __s32 *val)
1194 {
1195         struct sd *sd = (struct sd *) gspca_dev;
1196
1197         *val = sd->hflip;
1198         return 0;
1199 }
1200
1201 static int sd_setvflip(struct gspca_dev *gspca_dev, __s32 val)
1202 {
1203         struct sd *sd = (struct sd *) gspca_dev;
1204
1205         sd->vflip = val;
1206         if (gspca_dev->streaming)
1207                 setvflip(gspca_dev);
1208         return 0;
1209 }
1210
1211 static int sd_getvflip(struct gspca_dev *gspca_dev, __s32 *val)
1212 {
1213         struct sd *sd = (struct sd *) gspca_dev;
1214
1215         *val = sd->vflip;
1216         return 0;
1217 }
1218
1219 static int sd_setfreqfltr(struct gspca_dev *gspca_dev, __s32 val)
1220 {
1221         struct sd *sd = (struct sd *) gspca_dev;
1222
1223         sd->freqfltr = val;
1224         if (gspca_dev->streaming)
1225                 setfreqfltr(gspca_dev);
1226         return 0;
1227 }
1228
1229 static int sd_getfreqfltr(struct gspca_dev *gspca_dev, __s32 *val)
1230 {
1231         struct sd *sd = (struct sd *) gspca_dev;
1232
1233         *val = sd->freqfltr;
1234         return 0;
1235 }
1236
1237 static int sd_querymenu(struct gspca_dev *gspca_dev,
1238                 struct v4l2_querymenu *menu)
1239 {
1240         switch (menu->id) {
1241         case V4L2_CID_POWER_LINE_FREQUENCY:
1242                 switch (menu->index) {
1243                 case 0:         /* V4L2_CID_POWER_LINE_FREQUENCY_DISABLED */
1244                         strcpy((char *) menu->name, "Disabled");
1245                         return 0;
1246                 case 1:         /* V4L2_CID_POWER_LINE_FREQUENCY_50HZ */
1247                         strcpy((char *) menu->name, "50 Hz");
1248                         return 0;
1249                 }
1250                 break;
1251         }
1252
1253         return -EINVAL;
1254 }
1255
1256 /* get stream parameters (framerate) */
1257 static void sd_get_streamparm(struct gspca_dev *gspca_dev,
1258                              struct v4l2_streamparm *parm)
1259 {
1260         struct v4l2_captureparm *cp = &parm->parm.capture;
1261         struct v4l2_fract *tpf = &cp->timeperframe;
1262         struct sd *sd = (struct sd *) gspca_dev;
1263
1264         cp->capability |= V4L2_CAP_TIMEPERFRAME;
1265         tpf->numerator = 1;
1266         tpf->denominator = sd->frame_rate;
1267 }
1268
1269 /* set stream parameters (framerate) */
1270 static void sd_set_streamparm(struct gspca_dev *gspca_dev,
1271                              struct v4l2_streamparm *parm)
1272 {
1273         struct v4l2_captureparm *cp = &parm->parm.capture;
1274         struct v4l2_fract *tpf = &cp->timeperframe;
1275         struct sd *sd = (struct sd *) gspca_dev;
1276
1277         /* Set requested framerate */
1278         sd->frame_rate = tpf->denominator / tpf->numerator;
1279         if (gspca_dev->streaming)
1280                 set_frame_rate(gspca_dev);
1281
1282         /* Return the actual framerate */
1283         tpf->numerator = 1;
1284         tpf->denominator = sd->frame_rate;
1285 }
1286
1287 /* sub-driver description */
1288 static const struct sd_desc sd_desc = {
1289         .name     = MODULE_NAME,
1290         .ctrls    = sd_ctrls,
1291         .nctrls   = ARRAY_SIZE(sd_ctrls),
1292         .config   = sd_config,
1293         .init     = sd_init,
1294         .start    = sd_start,
1295         .stopN    = sd_stopN,
1296         .pkt_scan = sd_pkt_scan,
1297         .querymenu = sd_querymenu,
1298         .get_streamparm = sd_get_streamparm,
1299         .set_streamparm = sd_set_streamparm,
1300 };
1301
1302 /* -- module initialisation -- */
1303 static const struct usb_device_id device_table[] = {
1304         {USB_DEVICE(0x1415, 0x2000)},
1305         {}
1306 };
1307
1308 MODULE_DEVICE_TABLE(usb, device_table);
1309
1310 /* -- device connect -- */
1311 static int sd_probe(struct usb_interface *intf, const struct usb_device_id *id)
1312 {
1313         return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
1314                                 THIS_MODULE);
1315 }
1316
1317 static struct usb_driver sd_driver = {
1318         .name       = MODULE_NAME,
1319         .id_table   = device_table,
1320         .probe      = sd_probe,
1321         .disconnect = gspca_disconnect,
1322 #ifdef CONFIG_PM
1323         .suspend    = gspca_suspend,
1324         .resume     = gspca_resume,
1325 #endif
1326 };
1327
1328 /* -- module insert / remove -- */
1329 static int __init sd_mod_init(void)
1330 {
1331         return usb_register(&sd_driver);
1332 }
1333
1334 static void __exit sd_mod_exit(void)
1335 {
1336         usb_deregister(&sd_driver);
1337 }
1338
1339 module_init(sd_mod_init);
1340 module_exit(sd_mod_exit);