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, hue, AWB control added
  14  *      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 redblc;
  64         u8 blueblc;
  65         u8 hue;
  66         u8 autogain;
  67         u8 awb;
  68         s8 sharpness;
  69         u8 hflip;
  70         u8 vflip;
  71
  72 };
  73
  74 /* V4L2 controls supported by the driver */
  75 static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val);
  76 static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val);
  77 static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val);
  78 static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val);
  79 static int sd_setredblc(struct gspca_dev *gspca_dev, __s32 val);
  80 static int sd_getredblc(struct gspca_dev *gspca_dev, __s32 *val);
  81 static int sd_setblueblc(struct gspca_dev *gspca_dev, __s32 val);
  82 static int sd_getblueblc(struct gspca_dev *gspca_dev, __s32 *val);
  83 static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val);
  84 static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val);
  85 static int sd_setsharpness(struct gspca_dev *gspca_dev, __s32 val);
  86 static int sd_getsharpness(struct gspca_dev *gspca_dev, __s32 *val);
  87 static int sd_sethflip(struct gspca_dev *gspca_dev, __s32 val);
  88 static int sd_gethflip(struct gspca_dev *gspca_dev, __s32 *val);
  89 static int sd_setvflip(struct gspca_dev *gspca_dev, __s32 val);
  90 static int sd_getvflip(struct gspca_dev *gspca_dev, __s32 *val);
  91 static int sd_sethue(struct gspca_dev *gspca_dev, __s32 val);
  92 static int sd_gethue(struct gspca_dev *gspca_dev, __s32 *val);
  93 static int sd_setawb(struct gspca_dev *gspca_dev, __s32 val);
  94 static int sd_getawb(struct gspca_dev *gspca_dev, __s32 *val);
  95 static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
  96 static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
  97 static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
  98 static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val);
  99
 100 static const struct ctrl sd_ctrls[] = {
 101     {                                                   /* 0 */
 102         {
 103                 .id      = V4L2_CID_BRIGHTNESS,
 104                 .type    = V4L2_CTRL_TYPE_INTEGER,
 105                 .name    = "Brightness",
 106                 .minimum = 0,
 107                 .maximum = 255,
 108                 .step    = 1,
 109 #define BRIGHTNESS_DEF 20
 110                 .default_value = BRIGHTNESS_DEF,
 111         },
 112         .set = sd_setbrightness,
 113         .get = sd_getbrightness,
 114     },
 115     {                                                   /* 1 */
 116         {
 117                 .id      = V4L2_CID_CONTRAST,
 118                 .type    = V4L2_CTRL_TYPE_INTEGER,
 119                 .name    = "Contrast",
 120                 .minimum = 0,
 121                 .maximum = 255,
 122                 .step    = 1,
 123 #define CONTRAST_DEF 37
 124                 .default_value = CONTRAST_DEF,
 125         },
 126         .set = sd_setcontrast,
 127         .get = sd_getcontrast,
 128     },
 129     {                                                   /* 2 */
 130         {
 131             .id      = V4L2_CID_GAIN,
 132             .type    = V4L2_CTRL_TYPE_INTEGER,
 133             .name    = "Main Gain",
 134             .minimum = 0,
 135             .maximum = 63,
 136             .step    = 1,
 137 #define GAIN_DEF 20
 138             .default_value = GAIN_DEF,
 139         },
 140         .set = sd_setgain,
 141         .get = sd_getgain,
 142     },
 143     {                                                   /* 3 */
 144         {
 145             .id      = V4L2_CID_EXPOSURE,
 146             .type    = V4L2_CTRL_TYPE_INTEGER,
 147             .name    = "Exposure",
 148             .minimum = 0,
 149             .maximum = 255,
 150             .step    = 1,
 151 #define EXPO_DEF 120
 152             .default_value = EXPO_DEF,
 153         },
 154         .set = sd_setexposure,
 155         .get = sd_getexposure,
 156     },
 157     {                                                   /* 4 */
 158         {
 159             .id      = V4L2_CID_RED_BALANCE,
 160             .type    = V4L2_CTRL_TYPE_INTEGER,
 161             .name    = "Red Balance",
 162             .minimum = 0,
 163             .maximum = 255,
 164             .step    = 1,
 165 #define RED_BALANCE_DEF 128
 166             .default_value = RED_BALANCE_DEF,
 167         },
 168         .set = sd_setredblc,
 169         .get = sd_getredblc,
 170     },
 171     {                                                   /* 5 */
 172         {
 173             .id      = V4L2_CID_BLUE_BALANCE,
 174             .type    = V4L2_CTRL_TYPE_INTEGER,
 175             .name    = "Blue Balance",
 176             .minimum = 0,
 177             .maximum = 255,
 178             .step    = 1,
 179 #define BLUE_BALANCE_DEF 128
 180             .default_value = BLUE_BALANCE_DEF,
 181         },
 182         .set = sd_setblueblc,
 183         .get = sd_getblueblc,
 184     },
 185     {                                                   /* 6 */
 186         {
 187                 .id      = V4L2_CID_HUE,
 188                 .type    = V4L2_CTRL_TYPE_INTEGER,
 189                 .name    = "Hue",
 190                 .minimum = 0,
 191                 .maximum = 255,
 192                 .step    = 1,
 193 #define HUE_DEF 143
 194                 .default_value = HUE_DEF,
 195         },
 196         .set = sd_sethue,
 197         .get = sd_gethue,
 198     },
 199     {                                                   /* 7 */
 200         {
 201             .id      = V4L2_CID_AUTOGAIN,
 202             .type    = V4L2_CTRL_TYPE_BOOLEAN,
 203             .name    = "Autogain",
 204             .minimum = 0,
 205             .maximum = 1,
 206             .step    = 1,
 207 #define AUTOGAIN_DEF 0
 208             .default_value = AUTOGAIN_DEF,
 209         },
 210         .set = sd_setautogain,
 211         .get = sd_getautogain,
 212     },
 213 #define AWB_IDX 8
 214     {                                                   /* 8 */
 215         {
 216                 .id      = V4L2_CID_AUTO_WHITE_BALANCE,
 217                 .type    = V4L2_CTRL_TYPE_BOOLEAN,
 218                 .name    = "Auto White Balance",
 219                 .minimum = 0,
 220                 .maximum = 1,
 221                 .step    = 1,
 222 #define AWB_DEF 0
 223                 .default_value = AWB_DEF,
 224         },
 225         .set = sd_setawb,
 226         .get = sd_getawb,
 227     },
 228     {                                                   /* 9 */
 229         {
 230             .id      = V4L2_CID_SHARPNESS,
 231             .type    = V4L2_CTRL_TYPE_INTEGER,
 232             .name    = "Sharpness",
 233             .minimum = 0,
 234             .maximum = 63,
 235             .step    = 1,
 236 #define SHARPNESS_DEF 0
 237             .default_value = SHARPNESS_DEF,
 238         },
 239         .set = sd_setsharpness,
 240         .get = sd_getsharpness,
 241     },
 242     {                                                   /* 10 */
 243         {
 244             .id      = V4L2_CID_HFLIP,
 245             .type    = V4L2_CTRL_TYPE_BOOLEAN,
 246             .name    = "HFlip",
 247             .minimum = 0,
 248             .maximum = 1,
 249             .step    = 1,
 250 #define HFLIP_DEF 0
 251             .default_value = HFLIP_DEF,
 252         },
 253         .set = sd_sethflip,
 254         .get = sd_gethflip,
 255     },
 256     {                                                   /* 11 */
 257         {
 258             .id      = V4L2_CID_VFLIP,
 259             .type    = V4L2_CTRL_TYPE_BOOLEAN,
 260             .name    = "VFlip",
 261             .minimum = 0,
 262             .maximum = 1,
 263             .step    = 1,
 264 #define VFLIP_DEF 0
 265             .default_value = VFLIP_DEF,
 266         },
 267         .set = sd_setvflip,
 268         .get = sd_getvflip,
 269     },
 270 };
 271
 272 static const struct v4l2_pix_format ov772x_mode[] = {
 273         {320, 240, V4L2_PIX_FMT_YUYV, V4L2_FIELD_NONE,
 274          .bytesperline = 320 * 2,
 275          .sizeimage = 320 * 240 * 2,
 276          .colorspace = V4L2_COLORSPACE_SRGB,
 277          .priv = 1},
 278         {640, 480, V4L2_PIX_FMT_YUYV, V4L2_FIELD_NONE,
 279          .bytesperline = 640 * 2,
 280          .sizeimage = 640 * 480 * 2,
 281          .colorspace = V4L2_COLORSPACE_SRGB,
 282          .priv = 0},
 283 };
 284
 285 static const u8 qvga_rates[] = {125, 100, 75, 60, 50, 40, 30};
 286 static const u8 vga_rates[] = {60, 50, 40, 30, 15};
 287
 288 static const struct framerates ov772x_framerates[] = {
 289         { /* 320x240 */
 290                 .rates = qvga_rates,
 291                 .nrates = ARRAY_SIZE(qvga_rates),
 292         },
 293         { /* 640x480 */
 294                 .rates = vga_rates,
 295                 .nrates = ARRAY_SIZE(vga_rates),
 296         },
 297 };
 298
 299 static const u8 bridge_init[][2] = {
 300         { 0xc2, 0x0c },
 301         { 0x88, 0xf8 },
 302         { 0xc3, 0x69 },
 303         { 0x89, 0xff },
 304         { 0x76, 0x03 },
 305         { 0x92, 0x01 },
 306         { 0x93, 0x18 },
 307         { 0x94, 0x10 },
 308         { 0x95, 0x10 },
 309         { 0xe2, 0x00 },
 310         { 0xe7, 0x3e },
 311
 312         { 0x96, 0x00 },
 313
 314         { 0x97, 0x20 },
 315         { 0x97, 0x20 },
 316         { 0x97, 0x20 },
 317         { 0x97, 0x0a },
 318         { 0x97, 0x3f },
 319         { 0x97, 0x4a },
 320         { 0x97, 0x20 },
 321         { 0x97, 0x15 },
 322         { 0x97, 0x0b },
 323
 324         { 0x8e, 0x40 },
 325         { 0x1f, 0x81 },
 326         { 0x34, 0x05 },
 327         { 0xe3, 0x04 },
 328         { 0x88, 0x00 },
 329         { 0x89, 0x00 },
 330         { 0x76, 0x00 },
 331         { 0xe7, 0x2e },
 332         { 0x31, 0xf9 },
 333         { 0x25, 0x42 },
 334         { 0x21, 0xf0 },
 335
 336         { 0x1c, 0x00 },
 337         { 0x1d, 0x40 },
 338         { 0x1d, 0x02 }, /* payload size 0x0200 * 4 = 2048 bytes */
 339         { 0x1d, 0x00 }, /* payload size */
 340
 341         { 0x1d, 0x02 }, /* frame size 0x025800 * 4 = 614400 */
 342         { 0x1d, 0x58 }, /* frame size */
 343         { 0x1d, 0x00 }, /* frame size */
 344
 345         { 0x1c, 0x0a },
 346         { 0x1d, 0x08 }, /* turn on UVC header */
 347         { 0x1d, 0x0e }, /* .. */
 348
 349         { 0x8d, 0x1c },
 350         { 0x8e, 0x80 },
 351         { 0xe5, 0x04 },
 352
 353         { 0xc0, 0x50 },
 354         { 0xc1, 0x3c },
 355         { 0xc2, 0x0c },
 356 };
 357 static const u8 sensor_init[][2] = {
 358         { 0x12, 0x80 },
 359         { 0x11, 0x01 },
 360 /*fixme: better have a delay?*/
 361         { 0x11, 0x01 },
 362         { 0x11, 0x01 },
 363         { 0x11, 0x01 },
 364         { 0x11, 0x01 },
 365         { 0x11, 0x01 },
 366         { 0x11, 0x01 },
 367         { 0x11, 0x01 },
 368         { 0x11, 0x01 },
 369         { 0x11, 0x01 },
 370         { 0x11, 0x01 },
 371
 372         { 0x3d, 0x03 },
 373         { 0x17, 0x26 },
 374         { 0x18, 0xa0 },
 375         { 0x19, 0x07 },
 376         { 0x1a, 0xf0 },
 377         { 0x32, 0x00 },
 378         { 0x29, 0xa0 },
 379         { 0x2c, 0xf0 },
 380         { 0x65, 0x20 },
 381         { 0x11, 0x01 },
 382         { 0x42, 0x7f },
 383         { 0x63, 0xaa },         /* AWB - was e0 */
 384         { 0x64, 0xff },
 385         { 0x66, 0x00 },
 386         { 0x13, 0xf0 },         /* com8 */
 387         { 0x0d, 0x41 },
 388         { 0x0f, 0xc5 },
 389         { 0x14, 0x11 },
 390
 391         { 0x22, 0x7f },
 392         { 0x23, 0x03 },
 393         { 0x24, 0x40 },
 394         { 0x25, 0x30 },
 395         { 0x26, 0xa1 },
 396         { 0x2a, 0x00 },
 397         { 0x2b, 0x00 },
 398         { 0x6b, 0xaa },
 399         { 0x13, 0xff },         /* AWB */
 400
 401         { 0x90, 0x05 },
 402         { 0x91, 0x01 },
 403         { 0x92, 0x03 },
 404         { 0x93, 0x00 },
 405         { 0x94, 0x60 },
 406         { 0x95, 0x3c },
 407         { 0x96, 0x24 },
 408         { 0x97, 0x1e },
 409         { 0x98, 0x62 },
 410         { 0x99, 0x80 },
 411         { 0x9a, 0x1e },
 412         { 0x9b, 0x08 },
 413         { 0x9c, 0x20 },
 414         { 0x9e, 0x81 },
 415
 416         { 0xa6, 0x04 },
 417         { 0x7e, 0x0c },
 418         { 0x7f, 0x16 },
 419         { 0x80, 0x2a },
 420         { 0x81, 0x4e },
 421         { 0x82, 0x61 },
 422         { 0x83, 0x6f },
 423         { 0x84, 0x7b },
 424         { 0x85, 0x86 },
 425         { 0x86, 0x8e },
 426         { 0x87, 0x97 },
 427         { 0x88, 0xa4 },
 428         { 0x89, 0xaf },
 429         { 0x8a, 0xc5 },
 430         { 0x8b, 0xd7 },
 431         { 0x8c, 0xe8 },
 432         { 0x8d, 0x20 },
 433
 434         { 0x0c, 0x90 },
 435
 436         { 0x2b, 0x00 },
 437         { 0x22, 0x7f },
 438         { 0x23, 0x03 },
 439         { 0x11, 0x01 },
 440         { 0x0c, 0xd0 },
 441         { 0x64, 0xff },
 442         { 0x0d, 0x41 },
 443
 444         { 0x14, 0x41 },
 445         { 0x0e, 0xcd },
 446         { 0xac, 0xbf },
 447         { 0x8e, 0x00 },         /* De-noise threshold */
 448         { 0x0c, 0xd0 }
 449 };
 450 static const u8 bridge_start_vga[][2] = {
 451         {0x1c, 0x00},
 452         {0x1d, 0x40},
 453         {0x1d, 0x02},
 454         {0x1d, 0x00},
 455         {0x1d, 0x02},
 456         {0x1d, 0x58},
 457         {0x1d, 0x00},
 458         {0xc0, 0x50},
 459         {0xc1, 0x3c},
 460 };
 461 static const u8 sensor_start_vga[][2] = {
 462         {0x12, 0x00},
 463         {0x17, 0x26},
 464         {0x18, 0xa0},
 465         {0x19, 0x07},
 466         {0x1a, 0xf0},
 467         {0x29, 0xa0},
 468         {0x2c, 0xf0},
 469         {0x65, 0x20},
 470 };
 471 static const u8 bridge_start_qvga[][2] = {
 472         {0x1c, 0x00},
 473         {0x1d, 0x40},
 474         {0x1d, 0x02},
 475         {0x1d, 0x00},
 476         {0x1d, 0x01},
 477         {0x1d, 0x4b},
 478         {0x1d, 0x00},
 479         {0xc0, 0x28},
 480         {0xc1, 0x1e},
 481 };
 482 static const u8 sensor_start_qvga[][2] = {
 483         {0x12, 0x40},
 484         {0x17, 0x3f},
 485         {0x18, 0x50},
 486         {0x19, 0x03},
 487         {0x1a, 0x78},
 488         {0x29, 0x50},
 489         {0x2c, 0x78},
 490         {0x65, 0x2f},
 491 };
 492
 493 static void ov534_reg_write(struct gspca_dev *gspca_dev, u16 reg, u8 val)
 494 {
 495         struct usb_device *udev = gspca_dev->dev;
 496         int ret;
 497
 498         PDEBUG(D_USBO, "reg=0x%04x, val=0%02x", reg, val);
 499         gspca_dev->usb_buf[0] = val;
 500         ret = usb_control_msg(udev,
 501                               usb_sndctrlpipe(udev, 0),
 502                               0x01,
 503                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 504                               0x00, reg, gspca_dev->usb_buf, 1, CTRL_TIMEOUT);
 505         if (ret < 0)
 506                 PDEBUG(D_ERR, "write failed");
 507 }
 508
 509 static u8 ov534_reg_read(struct gspca_dev *gspca_dev, u16 reg)
 510 {
 511         struct usb_device *udev = gspca_dev->dev;
 512         int ret;
 513
 514         ret = usb_control_msg(udev,
 515                               usb_rcvctrlpipe(udev, 0),
 516                               0x01,
 517                               USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 518                               0x00, reg, gspca_dev->usb_buf, 1, CTRL_TIMEOUT);
 519         PDEBUG(D_USBI, "reg=0x%04x, data=0x%02x", reg, gspca_dev->usb_buf[0]);
 520         if (ret < 0)
 521                 PDEBUG(D_ERR, "read failed");
 522         return gspca_dev->usb_buf[0];
 523 }
 524
 525 /* Two bits control LED: 0x21 bit 7 and 0x23 bit 7.
 526  * (direction and output)? */
 527 static void ov534_set_led(struct gspca_dev *gspca_dev, int status)
 528 {
 529         u8 data;
 530
 531         PDEBUG(D_CONF, "led status: %d", status);
 532
 533         data = ov534_reg_read(gspca_dev, 0x21);
 534         data |= 0x80;
 535         ov534_reg_write(gspca_dev, 0x21, data);
 536
 537         data = ov534_reg_read(gspca_dev, 0x23);
 538         if (status)
 539                 data |= 0x80;
 540         else
 541                 data &= ~0x80;
 542
 543         ov534_reg_write(gspca_dev, 0x23, data);
 544
 545         if (!status) {
 546                 data = ov534_reg_read(gspca_dev, 0x21);
 547                 data &= ~0x80;
 548                 ov534_reg_write(gspca_dev, 0x21, data);
 549         }
 550 }
 551
 552 static int sccb_check_status(struct gspca_dev *gspca_dev)
 553 {
 554         u8 data;
 555         int i;
 556
 557         for (i = 0; i < 5; i++) {
 558                 data = ov534_reg_read(gspca_dev, OV534_REG_STATUS);
 559
 560                 switch (data) {
 561                 case 0x00:
 562                         return 1;
 563                 case 0x04:
 564                         return 0;
 565                 case 0x03:
 566                         break;
 567                 default:
 568                         PDEBUG(D_ERR, "sccb status 0x%02x, attempt %d/5",
 569                                data, i + 1);
 570                 }
 571         }
 572         return 0;
 573 }
 574
 575 static void sccb_reg_write(struct gspca_dev *gspca_dev, u8 reg, u8 val)
 576 {
 577         PDEBUG(D_USBO, "reg: 0x%02x, val: 0x%02x", reg, val);
 578         ov534_reg_write(gspca_dev, OV534_REG_SUBADDR, reg);
 579         ov534_reg_write(gspca_dev, OV534_REG_WRITE, val);
 580         ov534_reg_write(gspca_dev, OV534_REG_OPERATION, OV534_OP_WRITE_3);
 581
 582         if (!sccb_check_status(gspca_dev))
 583                 PDEBUG(D_ERR, "sccb_reg_write failed");
 584 }
 585
 586 static u8 sccb_reg_read(struct gspca_dev *gspca_dev, u16 reg)
 587 {
 588         ov534_reg_write(gspca_dev, OV534_REG_SUBADDR, reg);
 589         ov534_reg_write(gspca_dev, OV534_REG_OPERATION, OV534_OP_WRITE_2);
 590         if (!sccb_check_status(gspca_dev))
 591                 PDEBUG(D_ERR, "sccb_reg_read failed 1");
 592
 593         ov534_reg_write(gspca_dev, OV534_REG_OPERATION, OV534_OP_READ_2);
 594         if (!sccb_check_status(gspca_dev))
 595                 PDEBUG(D_ERR, "sccb_reg_read failed 2");
 596
 597         return ov534_reg_read(gspca_dev, OV534_REG_READ);
 598 }
 599
 600 /* output a bridge sequence (reg - val) */
 601 static void reg_w_array(struct gspca_dev *gspca_dev,
 602                         const u8 (*data)[2], int len)
 603 {
 604         while (--len >= 0) {
 605                 ov534_reg_write(gspca_dev, (*data)[0], (*data)[1]);
 606                 data++;
 607         }
 608 }
 609
 610 /* output a sensor sequence (reg - val) */
 611 static void sccb_w_array(struct gspca_dev *gspca_dev,
 612                         const u8 (*data)[2], int len)
 613 {
 614         while (--len >= 0) {
 615                 if ((*data)[0] != 0xff) {
 616                         sccb_reg_write(gspca_dev, (*data)[0], (*data)[1]);
 617                 } else {
 618                         sccb_reg_read(gspca_dev, (*data)[1]);
 619                         sccb_reg_write(gspca_dev, 0xff, 0x00);
 620                 }
 621                 data++;
 622         }
 623 }
 624
 625 /* ov772x specific controls */
 626 static void set_frame_rate(struct gspca_dev *gspca_dev)
 627 {
 628         struct sd *sd = (struct sd *) gspca_dev;
 629         int i;
 630         struct rate_s {
 631                 u8 fps;
 632                 u8 r11;
 633                 u8 r0d;
 634                 u8 re5;
 635         };
 636         const struct rate_s *r;
 637         static const struct rate_s rate_0[] = { /* 640x480 */
 638                 {60, 0x01, 0xc1, 0x04},
 639                 {50, 0x01, 0x41, 0x02},
 640                 {40, 0x02, 0xc1, 0x04},
 641                 {30, 0x04, 0x81, 0x02},
 642                 {15, 0x03, 0x41, 0x04},
 643         };
 644         static const struct rate_s rate_1[] = { /* 320x240 */
 645                 {125, 0x02, 0x81, 0x02},
 646                 {100, 0x02, 0xc1, 0x04},
 647                 {75, 0x03, 0xc1, 0x04},
 648                 {60, 0x04, 0xc1, 0x04},
 649                 {50, 0x02, 0x41, 0x04},
 650                 {40, 0x03, 0x41, 0x04},
 651                 {30, 0x04, 0x41, 0x04},
 652         };
 653
 654         if (gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv == 0) {
 655                 r = rate_0;
 656                 i = ARRAY_SIZE(rate_0);
 657         } else {
 658                 r = rate_1;
 659                 i = ARRAY_SIZE(rate_1);
 660         }
 661         while (--i > 0) {
 662                 if (sd->frame_rate >= r->fps)
 663                         break;
 664                 r++;
 665         }
 666
 667         sccb_reg_write(gspca_dev, 0x11, r->r11);
 668         sccb_reg_write(gspca_dev, 0x0d, r->r0d);
 669         ov534_reg_write(gspca_dev, 0xe5, r->re5);
 670
 671         PDEBUG(D_PROBE, "frame_rate: %d", r->fps);
 672 }
 673
 674 static void setbrightness(struct gspca_dev *gspca_dev)
 675 {
 676         struct sd *sd = (struct sd *) gspca_dev;
 677
 678         sccb_reg_write(gspca_dev, 0x9B, sd->brightness);
 679 }
 680
 681 static void setcontrast(struct gspca_dev *gspca_dev)
 682 {
 683         struct sd *sd = (struct sd *) gspca_dev;
 684
 685         sccb_reg_write(gspca_dev, 0x9C, sd->contrast);
 686 }
 687
 688 static void setgain(struct gspca_dev *gspca_dev)
 689 {
 690         struct sd *sd = (struct sd *) gspca_dev;
 691         u8 val;
 692
 693         val = sd->gain;
 694         switch (val & 0x30) {
 695         case 0x00:
 696                 val &= 0x0f;
 697                 break;
 698         case 0x10:
 699                 val &= 0x0f;
 700                 val |= 0x30;
 701                 break;
 702         case 0x20:
 703                 val &= 0x0f;
 704                 val |= 0x70;
 705                 break;
 706         default:
 707 /*      case 0x30: */
 708                 val &= 0x0f;
 709                 val |= 0xf0;
 710                 break;
 711         }
 712         sccb_reg_write(gspca_dev, 0x00, val);
 713 }
 714
 715 static void setexposure(struct gspca_dev *gspca_dev)
 716 {
 717         struct sd *sd = (struct sd *) gspca_dev;
 718         u8 val;
 719
 720         val = sd->exposure;
 721         sccb_reg_write(gspca_dev, 0x08, val >> 7);
 722         sccb_reg_write(gspca_dev, 0x10, val << 1);
 723 }
 724
 725 static void setredblc(struct gspca_dev *gspca_dev)
 726 {
 727         struct sd *sd = (struct sd *) gspca_dev;
 728
 729         sccb_reg_write(gspca_dev, 0x43, sd->redblc);
 730 }
 731
 732 static void setblueblc(struct gspca_dev *gspca_dev)
 733 {
 734         struct sd *sd = (struct sd *) gspca_dev;
 735
 736         sccb_reg_write(gspca_dev, 0x42, sd->blueblc);
 737 }
 738
 739 static void sethue(struct gspca_dev *gspca_dev)
 740 {
 741         struct sd *sd = (struct sd *) gspca_dev;
 742
 743         sccb_reg_write(gspca_dev, 0x01, sd->hue);
 744 }
 745
 746 static void setautogain(struct gspca_dev *gspca_dev)
 747 {
 748         struct sd *sd = (struct sd *) gspca_dev;
 749
 750         if (sd->autogain) {
 751                 sccb_reg_write(gspca_dev, 0x13, 0xf7); /* AGC,AEC,AWB ON */
 752                 sccb_reg_write(gspca_dev, 0x64,
 753                                 sccb_reg_read(gspca_dev, 0x64) | 0x03);
 754         } else {
 755                 sccb_reg_write(gspca_dev, 0x13, 0xf0); /* AGC,AEC,AWB OFF */
 756                 sccb_reg_write(gspca_dev, 0x64,
 757                                 sccb_reg_read(gspca_dev, 0x64) & 0xfc);
 758         }
 759 }
 760
 761 static void setawb(struct gspca_dev *gspca_dev)
 762 {
 763         struct sd *sd = (struct sd *) gspca_dev;
 764
 765         if (sd->awb)
 766                 sccb_reg_write(gspca_dev, 0x63, 0xe0);  /* AWB on */
 767         else
 768                 sccb_reg_write(gspca_dev, 0x63, 0xaa);  /* AWB off */
 769 }
 770
 771 static void setsharpness(struct gspca_dev *gspca_dev)
 772 {
 773         struct sd *sd = (struct sd *) gspca_dev;
 774         u8 val;
 775
 776         val = sd->sharpness;
 777         sccb_reg_write(gspca_dev, 0x91, val);   /* vga noise */
 778         sccb_reg_write(gspca_dev, 0x8e, val);   /* qvga noise */
 779 }
 780
 781 static void sethflip(struct gspca_dev *gspca_dev)
 782 {
 783         struct sd *sd = (struct sd *) gspca_dev;
 784
 785         if (sd->hflip == 0)
 786                 sccb_reg_write(gspca_dev, 0x0c,
 787                                 sccb_reg_read(gspca_dev, 0x0c) | 0x40);
 788         else
 789                 sccb_reg_write(gspca_dev, 0x0c,
 790                                 sccb_reg_read(gspca_dev, 0x0c) & 0xbf);
 791 }
 792
 793 static void setvflip(struct gspca_dev *gspca_dev)
 794 {
 795         struct sd *sd = (struct sd *) gspca_dev;
 796
 797         if (sd->vflip == 0)
 798                 sccb_reg_write(gspca_dev, 0x0c,
 799                                 sccb_reg_read(gspca_dev, 0x0c) | 0x80);
 800         else
 801                 sccb_reg_write(gspca_dev, 0x0c,
 802                                 sccb_reg_read(gspca_dev, 0x0c) & 0x7f);
 803 }
 804
 805 /* this function is called at probe time */
 806 static int sd_config(struct gspca_dev *gspca_dev,
 807                      const struct usb_device_id *id)
 808 {
 809         struct sd *sd = (struct sd *) gspca_dev;
 810         struct cam *cam;
 811
 812         cam = &gspca_dev->cam;
 813
 814         cam->cam_mode = ov772x_mode;
 815         cam->nmodes = ARRAY_SIZE(ov772x_mode);
 816         cam->mode_framerates = ov772x_framerates;
 817
 818         cam->bulk = 1;
 819         cam->bulk_size = 16384;
 820         cam->bulk_nurbs = 2;
 821
 822         sd->frame_rate = 30;
 823
 824         sd->brightness = BRIGHTNESS_DEF;
 825         sd->contrast = CONTRAST_DEF;
 826         sd->gain = GAIN_DEF;
 827         sd->exposure = EXPO_DEF;
 828         sd->redblc = RED_BALANCE_DEF;
 829         sd->blueblc = BLUE_BALANCE_DEF;
 830         sd->hue = HUE_DEF;
 831 #if AUTOGAIN_DEF != 0
 832         sd->autogain = AUTOGAIN_DEF;
 833 #else
 834         gspca_dev->ctrl_inac |= (1 << AWB_IDX);
 835 #endif
 836 #if AWB_DEF != 0
 837         sd->awb = AWB_DEF
 838 #endif
 839 #if SHARPNESS_DEF != 0
 840         sd->sharpness = SHARPNESS_DEF;
 841 #endif
 842 #if HFLIP_DEF != 0
 843         sd->hflip = HFLIP_DEF;
 844 #endif
 845 #if VFLIP_DEF != 0
 846         sd->vflip = VFLIP_DEF;
 847 #endif
 848
 849         return 0;
 850 }
 851
 852 /* this function is called at probe and resume time */
 853 static int sd_init(struct gspca_dev *gspca_dev)
 854 {
 855         u16 sensor_id;
 856
 857         /* reset bridge */
 858         ov534_reg_write(gspca_dev, 0xe7, 0x3a);
 859         ov534_reg_write(gspca_dev, 0xe0, 0x08);
 860         msleep(100);
 861
 862         /* initialize the sensor address */
 863         ov534_reg_write(gspca_dev, OV534_REG_ADDRESS, 0x42);
 864
 865         /* reset sensor */
 866         sccb_reg_write(gspca_dev, 0x12, 0x80);
 867         msleep(10);
 868
 869         /* probe the sensor */
 870         sccb_reg_read(gspca_dev, 0x0a);
 871         sensor_id = sccb_reg_read(gspca_dev, 0x0a) << 8;
 872         sccb_reg_read(gspca_dev, 0x0b);
 873         sensor_id |= sccb_reg_read(gspca_dev, 0x0b);
 874         PDEBUG(D_PROBE, "Sensor ID: %04x", sensor_id);
 875
 876         /* initialize */
 877         reg_w_array(gspca_dev, bridge_init,
 878                         ARRAY_SIZE(bridge_init));
 879         ov534_set_led(gspca_dev, 1);
 880         sccb_w_array(gspca_dev, sensor_init,
 881                         ARRAY_SIZE(sensor_init));
 882         ov534_reg_write(gspca_dev, 0xe0, 0x09);
 883         ov534_set_led(gspca_dev, 0);
 884         set_frame_rate(gspca_dev);
 885
 886         return 0;
 887 }
 888
 889 static int sd_start(struct gspca_dev *gspca_dev)
 890 {
 891         int mode;
 892
 893         mode = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
 894         if (mode != 0) {        /* 320x240 */
 895                 reg_w_array(gspca_dev, bridge_start_qvga,
 896                                 ARRAY_SIZE(bridge_start_qvga));
 897                 sccb_w_array(gspca_dev, sensor_start_qvga,
 898                                 ARRAY_SIZE(sensor_start_qvga));
 899         } else {                /* 640x480 */
 900                 reg_w_array(gspca_dev, bridge_start_vga,
 901                                 ARRAY_SIZE(bridge_start_vga));
 902                 sccb_w_array(gspca_dev, sensor_start_vga,
 903                                 ARRAY_SIZE(sensor_start_vga));
 904         }
 905         set_frame_rate(gspca_dev);
 906
 907         setautogain(gspca_dev);
 908         setawb(gspca_dev);
 909         setgain(gspca_dev);
 910         setredblc(gspca_dev);
 911         setblueblc(gspca_dev);
 912         sethue(gspca_dev);
 913         setexposure(gspca_dev);
 914         setbrightness(gspca_dev);
 915         setcontrast(gspca_dev);
 916         setsharpness(gspca_dev);
 917         setvflip(gspca_dev);
 918         sethflip(gspca_dev);
 919
 920         ov534_set_led(gspca_dev, 1);
 921         ov534_reg_write(gspca_dev, 0xe0, 0x00);
 922         return 0;
 923 }
 924
 925 static void sd_stopN(struct gspca_dev *gspca_dev)
 926 {
 927         ov534_reg_write(gspca_dev, 0xe0, 0x09);
 928         ov534_set_led(gspca_dev, 0);
 929 }
 930
 931 /* Values for bmHeaderInfo (Video and Still Image Payload Headers, 2.4.3.3) */
 932 #define UVC_STREAM_EOH  (1 << 7)
 933 #define UVC_STREAM_ERR  (1 << 6)
 934 #define UVC_STREAM_STI  (1 << 5)
 935 #define UVC_STREAM_RES  (1 << 4)
 936 #define UVC_STREAM_SCR  (1 << 3)
 937 #define UVC_STREAM_PTS  (1 << 2)
 938 #define UVC_STREAM_EOF  (1 << 1)
 939 #define UVC_STREAM_FID  (1 << 0)
 940
 941 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 942                         u8 *data, int len)
 943 {
 944         struct sd *sd = (struct sd *) gspca_dev;
 945         __u32 this_pts;
 946         u16 this_fid;
 947         int remaining_len = len;
 948
 949         do {
 950                 len = min(remaining_len, 2048);
 951
 952                 /* Payloads are prefixed with a UVC-style header.  We
 953                    consider a frame to start when the FID toggles, or the PTS
 954                    changes.  A frame ends when EOF is set, and we've received
 955                    the correct number of bytes. */
 956
 957                 /* Verify UVC header.  Header length is always 12 */
 958                 if (data[0] != 12 || len < 12) {
 959                         PDEBUG(D_PACK, "bad header");
 960                         goto discard;
 961                 }
 962
 963                 /* Check errors */
 964                 if (data[1] & UVC_STREAM_ERR) {
 965                         PDEBUG(D_PACK, "payload error");
 966                         goto discard;
 967                 }
 968
 969                 /* Extract PTS and FID */
 970                 if (!(data[1] & UVC_STREAM_PTS)) {
 971                         PDEBUG(D_PACK, "PTS not present");
 972                         goto discard;
 973                 }
 974                 this_pts = (data[5] << 24) | (data[4] << 16)
 975                                                 | (data[3] << 8) | data[2];
 976                 this_fid = (data[1] & UVC_STREAM_FID) ? 1 : 0;
 977
 978                 /* If PTS or FID has changed, start a new frame. */
 979                 if (this_pts != sd->last_pts || this_fid != sd->last_fid) {
 980                         if (gspca_dev->last_packet_type == INTER_PACKET)
 981                                 gspca_frame_add(gspca_dev, LAST_PACKET,
 982                                                 NULL, 0);
 983                         sd->last_pts = this_pts;
 984                         sd->last_fid = this_fid;
 985                         gspca_frame_add(gspca_dev, FIRST_PACKET,
 986                                         data + 12, len - 12);
 987                 /* If this packet is marked as EOF, end the frame */
 988                 } else if (data[1] & UVC_STREAM_EOF) {
 989                         struct gspca_frame *frame;
 990
 991                         sd->last_pts = 0;
 992                         frame = gspca_get_i_frame(gspca_dev);
 993                         if (frame == NULL)
 994                                 goto discard;
 995                         if (frame->data_end - frame->data + (len - 12) !=
 996                             gspca_dev->width * gspca_dev->height * 2) {
 997                                 PDEBUG(D_PACK, "wrong sized frame");
 998                                 goto discard;
 999                         }
1000                         gspca_frame_add(gspca_dev, LAST_PACKET,
1001                                         data + 12, len - 12);
1002                 } else {
1003
1004                         /* Add the data from this payload */
1005                         gspca_frame_add(gspca_dev, INTER_PACKET,
1006                                         data + 12, len - 12);
1007                 }
1008
1009                 /* Done this payload */
1010                 goto scan_next;
1011
1012 discard:
1013                 /* Discard data until a new frame starts. */
1014                 gspca_dev->last_packet_type = DISCARD_PACKET;
1015
1016 scan_next:
1017                 remaining_len -= len;
1018                 data += len;
1019         } while (remaining_len > 0);
1020 }
1021
1022 /* controls */
1023 static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val)
1024 {
1025         struct sd *sd = (struct sd *) gspca_dev;
1026
1027         sd->gain = val;
1028         if (gspca_dev->streaming)
1029                 setgain(gspca_dev);
1030         return 0;
1031 }
1032
1033 static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val)
1034 {
1035         struct sd *sd = (struct sd *) gspca_dev;
1036
1037         *val = sd->gain;
1038         return 0;
1039 }
1040
1041 static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val)
1042 {
1043         struct sd *sd = (struct sd *) gspca_dev;
1044
1045         sd->exposure = val;
1046         if (gspca_dev->streaming)
1047                 setexposure(gspca_dev);
1048         return 0;
1049 }
1050
1051 static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val)
1052 {
1053         struct sd *sd = (struct sd *) gspca_dev;
1054
1055         *val = sd->exposure;
1056         return 0;
1057 }
1058
1059 static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
1060 {
1061         struct sd *sd = (struct sd *) gspca_dev;
1062
1063         sd->brightness = val;
1064         if (gspca_dev->streaming)
1065                 setbrightness(gspca_dev);
1066         return 0;
1067 }
1068
1069 static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
1070 {
1071         struct sd *sd = (struct sd *) gspca_dev;
1072
1073         *val = sd->brightness;
1074         return 0;
1075 }
1076
1077 static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
1078 {
1079         struct sd *sd = (struct sd *) gspca_dev;
1080
1081         sd->contrast = val;
1082         if (gspca_dev->streaming)
1083                 setcontrast(gspca_dev);
1084         return 0;
1085 }
1086
1087 static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
1088 {
1089         struct sd *sd = (struct sd *) gspca_dev;
1090
1091         *val = sd->contrast;
1092         return 0;
1093 }
1094
1095 static int sd_setredblc(struct gspca_dev *gspca_dev, __s32 val)
1096 {
1097         struct sd *sd = (struct sd *) gspca_dev;
1098
1099         sd->redblc = val;
1100         if (gspca_dev->streaming)
1101                 setredblc(gspca_dev);
1102         return 0;
1103 }
1104
1105 static int sd_getredblc(struct gspca_dev *gspca_dev, __s32 *val)
1106 {
1107         struct sd *sd = (struct sd *) gspca_dev;
1108
1109         *val = sd->redblc;
1110         return 0;
1111 }
1112
1113 static int sd_setblueblc(struct gspca_dev *gspca_dev, __s32 val)
1114 {
1115         struct sd *sd = (struct sd *) gspca_dev;
1116
1117         sd->blueblc = val;
1118         if (gspca_dev->streaming)
1119                 setblueblc(gspca_dev);
1120         return 0;
1121 }
1122
1123 static int sd_getblueblc(struct gspca_dev *gspca_dev, __s32 *val)
1124 {
1125         struct sd *sd = (struct sd *) gspca_dev;
1126
1127         *val = sd->blueblc;
1128         return 0;
1129 }
1130
1131 static int sd_sethue(struct gspca_dev *gspca_dev, __s32 val)
1132 {
1133         struct sd *sd = (struct sd *) gspca_dev;
1134
1135         sd->hue = val;
1136         if (gspca_dev->streaming)
1137                 sethue(gspca_dev);
1138         return 0;
1139 }
1140
1141 static int sd_gethue(struct gspca_dev *gspca_dev, __s32 *val)
1142 {
1143         struct sd *sd = (struct sd *) gspca_dev;
1144
1145         *val = sd->hue;
1146         return 0;
1147 }
1148
1149 static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val)
1150 {
1151         struct sd *sd = (struct sd *) gspca_dev;
1152
1153         sd->autogain = val;
1154
1155         if (gspca_dev->streaming) {
1156
1157                 /* the auto white balance control works only
1158                  * when auto gain is set */
1159                 if (val)
1160                         gspca_dev->ctrl_inac &= ~(1 << AWB_IDX);
1161                 else
1162                         gspca_dev->ctrl_inac |= (1 << AWB_IDX);
1163                 setautogain(gspca_dev);
1164         }
1165         return 0;
1166 }
1167
1168 static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val)
1169 {
1170         struct sd *sd = (struct sd *) gspca_dev;
1171
1172         *val = sd->autogain;
1173         return 0;
1174 }
1175
1176 static int sd_setawb(struct gspca_dev *gspca_dev, __s32 val)
1177 {
1178         struct sd *sd = (struct sd *) gspca_dev;
1179
1180         sd->awb = val;
1181         if (gspca_dev->streaming)
1182                 setawb(gspca_dev);
1183         return 0;
1184 }
1185
1186 static int sd_getawb(struct gspca_dev *gspca_dev, __s32 *val)
1187 {
1188         struct sd *sd = (struct sd *) gspca_dev;
1189
1190         *val = sd->awb;
1191         return 0;
1192 }
1193
1194 static int sd_setsharpness(struct gspca_dev *gspca_dev, __s32 val)
1195 {
1196         struct sd *sd = (struct sd *) gspca_dev;
1197
1198         sd->sharpness = val;
1199         if (gspca_dev->streaming)
1200                 setsharpness(gspca_dev);
1201         return 0;
1202 }
1203
1204 static int sd_getsharpness(struct gspca_dev *gspca_dev, __s32 *val)
1205 {
1206         struct sd *sd = (struct sd *) gspca_dev;
1207
1208         *val = sd->sharpness;
1209         return 0;
1210 }
1211
1212 static int sd_sethflip(struct gspca_dev *gspca_dev, __s32 val)
1213 {
1214         struct sd *sd = (struct sd *) gspca_dev;
1215
1216         sd->hflip = val;
1217         if (gspca_dev->streaming)
1218                 sethflip(gspca_dev);
1219         return 0;
1220 }
1221
1222 static int sd_gethflip(struct gspca_dev *gspca_dev, __s32 *val)
1223 {
1224         struct sd *sd = (struct sd *) gspca_dev;
1225
1226         *val = sd->hflip;
1227         return 0;
1228 }
1229
1230 static int sd_setvflip(struct gspca_dev *gspca_dev, __s32 val)
1231 {
1232         struct sd *sd = (struct sd *) gspca_dev;
1233
1234         sd->vflip = val;
1235         if (gspca_dev->streaming)
1236                 setvflip(gspca_dev);
1237         return 0;
1238 }
1239
1240 static int sd_getvflip(struct gspca_dev *gspca_dev, __s32 *val)
1241 {
1242         struct sd *sd = (struct sd *) gspca_dev;
1243
1244         *val = sd->vflip;
1245         return 0;
1246 }
1247
1248 /* get stream parameters (framerate) */
1249 static int sd_get_streamparm(struct gspca_dev *gspca_dev,
1250                              struct v4l2_streamparm *parm)
1251 {
1252         struct v4l2_captureparm *cp = &parm->parm.capture;
1253         struct v4l2_fract *tpf = &cp->timeperframe;
1254         struct sd *sd = (struct sd *) gspca_dev;
1255
1256         if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1257                 return -EINVAL;
1258
1259         cp->capability |= V4L2_CAP_TIMEPERFRAME;
1260         tpf->numerator = 1;
1261         tpf->denominator = sd->frame_rate;
1262
1263         return 0;
1264 }
1265
1266 /* set stream parameters (framerate) */
1267 static int sd_set_streamparm(struct gspca_dev *gspca_dev,
1268                              struct v4l2_streamparm *parm)
1269 {
1270         struct v4l2_captureparm *cp = &parm->parm.capture;
1271         struct v4l2_fract *tpf = &cp->timeperframe;
1272         struct sd *sd = (struct sd *) gspca_dev;
1273
1274         if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1275                 return -EINVAL;
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         return 0;
1287 }
1288
1289 /* sub-driver description */
1290 static const struct sd_desc sd_desc = {
1291         .name     = MODULE_NAME,
1292         .ctrls    = sd_ctrls,
1293         .nctrls   = ARRAY_SIZE(sd_ctrls),
1294         .config   = sd_config,
1295         .init     = sd_init,
1296         .start    = sd_start,
1297         .stopN    = sd_stopN,
1298         .pkt_scan = sd_pkt_scan,
1299         .get_streamparm = sd_get_streamparm,
1300         .set_streamparm = sd_set_streamparm,
1301 };
1302
1303 /* -- module initialisation -- */
1304 static const __devinitdata struct usb_device_id device_table[] = {
1305         {USB_DEVICE(0x1415, 0x2000)},
1306         {}
1307 };
1308
1309 MODULE_DEVICE_TABLE(usb, device_table);
1310
1311 /* -- device connect -- */
1312 static int sd_probe(struct usb_interface *intf, const struct usb_device_id *id)
1313 {
1314         return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
1315                                 THIS_MODULE);
1316 }
1317
1318 static struct usb_driver sd_driver = {
1319         .name       = MODULE_NAME,
1320         .id_table   = device_table,
1321         .probe      = sd_probe,
1322         .disconnect = gspca_disconnect,
1323 #ifdef CONFIG_PM
1324         .suspend    = gspca_suspend,
1325         .resume     = gspca_resume,
1326 #endif
1327 };
1328
1329 /* -- module insert / remove -- */
1330 static int __init sd_mod_init(void)
1331 {
1332         int ret;
1333
1334         ret = usb_register(&sd_driver);
1335         if (ret < 0)
1336                 return ret;
1337         PDEBUG(D_PROBE, "registered");
1338         return 0;
1339 }
1340
1341 static void __exit sd_mod_exit(void)
1342 {
1343         usb_deregister(&sd_driver);
1344         PDEBUG(D_PROBE, "deregistered");
1345 }
1346
1347 module_init(sd_mod_init);
1348 module_exit(sd_mod_exit);