SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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 agc;
  64         u8 awb;
  65         u8 aec;
  66         s8 sharpness;
  67         u8 hflip;
  68         u8 vflip;
  69
  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
  94 static const struct ctrl sd_ctrls[] = {
  95         {       /* 0 */
  96                 {
  97                         .id      = V4L2_CID_BRIGHTNESS,
  98                         .type    = V4L2_CTRL_TYPE_INTEGER,
  99                         .name    = "Brightness",
 100                         .minimum = 0,
 101                         .maximum = 255,
 102                         .step    = 1,
 103 #define BRIGHTNESS_DEF 0
 104                         .default_value = BRIGHTNESS_DEF,
 105                 },
 106                 .set = sd_setbrightness,
 107                 .get = sd_getbrightness,
 108         },
 109         {       /* 1 */
 110                 {
 111                         .id      = V4L2_CID_CONTRAST,
 112                         .type    = V4L2_CTRL_TYPE_INTEGER,
 113                         .name    = "Contrast",
 114                         .minimum = 0,
 115                         .maximum = 255,
 116                         .step    = 1,
 117 #define CONTRAST_DEF 32
 118                         .default_value = CONTRAST_DEF,
 119                 },
 120                 .set = sd_setcontrast,
 121                 .get = sd_getcontrast,
 122         },
 123         {       /* 2 */
 124                 {
 125                         .id      = V4L2_CID_GAIN,
 126                         .type    = V4L2_CTRL_TYPE_INTEGER,
 127                         .name    = "Main Gain",
 128                         .minimum = 0,
 129                         .maximum = 63,
 130                         .step    = 1,
 131 #define GAIN_DEF 20
 132                         .default_value = GAIN_DEF,
 133                 },
 134                 .set = sd_setgain,
 135                 .get = sd_getgain,
 136         },
 137         {       /* 3 */
 138                 {
 139                         .id      = V4L2_CID_EXPOSURE,
 140                         .type    = V4L2_CTRL_TYPE_INTEGER,
 141                         .name    = "Exposure",
 142                         .minimum = 0,
 143                         .maximum = 255,
 144                         .step    = 1,
 145 #define EXPO_DEF 120
 146                         .default_value = EXPO_DEF,
 147                 },
 148                 .set = sd_setexposure,
 149                 .get = sd_getexposure,
 150         },
 151         {       /* 4 */
 152                 {
 153                         .id      = V4L2_CID_AUTOGAIN,
 154                         .type    = V4L2_CTRL_TYPE_BOOLEAN,
 155                         .name    = "Auto Gain",
 156                         .minimum = 0,
 157                         .maximum = 1,
 158                         .step    = 1,
 159 #define AGC_DEF 1
 160                         .default_value = AGC_DEF,
 161                 },
 162                 .set = sd_setagc,
 163                 .get = sd_getagc,
 164         },
 165 #define AWB_IDX 5
 166         {       /* 5 */
 167                 {
 168                         .id      = V4L2_CID_AUTO_WHITE_BALANCE,
 169                         .type    = V4L2_CTRL_TYPE_BOOLEAN,
 170                         .name    = "Auto White Balance",
 171                         .minimum = 0,
 172                         .maximum = 1,
 173                         .step    = 1,
 174 #define AWB_DEF 1
 175                         .default_value = AWB_DEF,
 176                 },
 177                 .set = sd_setawb,
 178                 .get = sd_getawb,
 179         },
 180         {       /* 6 */
 181                 {
 182                         .id      = V4L2_CID_EXPOSURE_AUTO,
 183                         .type    = V4L2_CTRL_TYPE_BOOLEAN,
 184                         .name    = "Auto Exposure",
 185                         .minimum = 0,
 186                         .maximum = 1,
 187                         .step    = 1,
 188 #define AEC_DEF 1
 189                         .default_value = AEC_DEF,
 190                 },
 191                 .set = sd_setaec,
 192                 .get = sd_getaec,
 193         },
 194         {       /* 7 */
 195                 {
 196                         .id      = V4L2_CID_SHARPNESS,
 197                         .type    = V4L2_CTRL_TYPE_INTEGER,
 198                         .name    = "Sharpness",
 199                         .minimum = 0,
 200                         .maximum = 63,
 201                         .step    = 1,
 202 #define SHARPNESS_DEF 0
 203                         .default_value = SHARPNESS_DEF,
 204                 },
 205                 .set = sd_setsharpness,
 206                 .get = sd_getsharpness,
 207         },
 208         {       /* 8 */
 209                 {
 210                         .id      = V4L2_CID_HFLIP,
 211                         .type    = V4L2_CTRL_TYPE_BOOLEAN,
 212                         .name    = "HFlip",
 213                         .minimum = 0,
 214                         .maximum = 1,
 215                         .step    = 1,
 216 #define HFLIP_DEF 0
 217                         .default_value = HFLIP_DEF,
 218                 },
 219                 .set = sd_sethflip,
 220                 .get = sd_gethflip,
 221         },
 222         {       /* 9 */
 223                 {
 224                         .id      = V4L2_CID_VFLIP,
 225                         .type    = V4L2_CTRL_TYPE_BOOLEAN,
 226                         .name    = "VFlip",
 227                         .minimum = 0,
 228                         .maximum = 1,
 229                         .step    = 1,
 230 #define VFLIP_DEF 0
 231                         .default_value = VFLIP_DEF,
 232                 },
 233                 .set = sd_setvflip,
 234                 .get = sd_getvflip,
 235         },
 236 };
 237
 238 static const struct v4l2_pix_format ov772x_mode[] = {
 239         {320, 240, V4L2_PIX_FMT_YUYV, V4L2_FIELD_NONE,
 240          .bytesperline = 320 * 2,
 241          .sizeimage = 320 * 240 * 2,
 242          .colorspace = V4L2_COLORSPACE_SRGB,
 243          .priv = 1},
 244         {640, 480, V4L2_PIX_FMT_YUYV, V4L2_FIELD_NONE,
 245          .bytesperline = 640 * 2,
 246          .sizeimage = 640 * 480 * 2,
 247          .colorspace = V4L2_COLORSPACE_SRGB,
 248          .priv = 0},
 249 };
 250
 251 static const u8 qvga_rates[] = {125, 100, 75, 60, 50, 40, 30};
 252 static const u8 vga_rates[] = {60, 50, 40, 30, 15};
 253
 254 static const struct framerates ov772x_framerates[] = {
 255         { /* 320x240 */
 256                 .rates = qvga_rates,
 257                 .nrates = ARRAY_SIZE(qvga_rates),
 258         },
 259         { /* 640x480 */
 260                 .rates = vga_rates,
 261                 .nrates = ARRAY_SIZE(vga_rates),
 262         },
 263 };
 264
 265 static const u8 bridge_init[][2] = {
 266         { 0xc2, 0x0c },
 267         { 0x88, 0xf8 },
 268         { 0xc3, 0x69 },
 269         { 0x89, 0xff },
 270         { 0x76, 0x03 },
 271         { 0x92, 0x01 },
 272         { 0x93, 0x18 },
 273         { 0x94, 0x10 },
 274         { 0x95, 0x10 },
 275         { 0xe2, 0x00 },
 276         { 0xe7, 0x3e },
 277
 278         { 0x96, 0x00 },
 279
 280         { 0x97, 0x20 },
 281         { 0x97, 0x20 },
 282         { 0x97, 0x20 },
 283         { 0x97, 0x0a },
 284         { 0x97, 0x3f },
 285         { 0x97, 0x4a },
 286         { 0x97, 0x20 },
 287         { 0x97, 0x15 },
 288         { 0x97, 0x0b },
 289
 290         { 0x8e, 0x40 },
 291         { 0x1f, 0x81 },
 292         { 0x34, 0x05 },
 293         { 0xe3, 0x04 },
 294         { 0x88, 0x00 },
 295         { 0x89, 0x00 },
 296         { 0x76, 0x00 },
 297         { 0xe7, 0x2e },
 298         { 0x31, 0xf9 },
 299         { 0x25, 0x42 },
 300         { 0x21, 0xf0 },
 301
 302         { 0x1c, 0x00 },
 303         { 0x1d, 0x40 },
 304         { 0x1d, 0x02 }, /* payload size 0x0200 * 4 = 2048 bytes */
 305         { 0x1d, 0x00 }, /* payload size */
 306
 307         { 0x1d, 0x02 }, /* frame size 0x025800 * 4 = 614400 */
 308         { 0x1d, 0x58 }, /* frame size */
 309         { 0x1d, 0x00 }, /* frame size */
 310
 311         { 0x1c, 0x0a },
 312         { 0x1d, 0x08 }, /* turn on UVC header */
 313         { 0x1d, 0x0e }, /* .. */
 314
 315         { 0x8d, 0x1c },
 316         { 0x8e, 0x80 },
 317         { 0xe5, 0x04 },
 318
 319         { 0xc0, 0x50 },
 320         { 0xc1, 0x3c },
 321         { 0xc2, 0x0c },
 322 };
 323 static const u8 sensor_init[][2] = {
 324         { 0x12, 0x80 },
 325         { 0x11, 0x01 },
 326 /*fixme: better have a delay?*/
 327         { 0x11, 0x01 },
 328         { 0x11, 0x01 },
 329         { 0x11, 0x01 },
 330         { 0x11, 0x01 },
 331         { 0x11, 0x01 },
 332         { 0x11, 0x01 },
 333         { 0x11, 0x01 },
 334         { 0x11, 0x01 },
 335         { 0x11, 0x01 },
 336         { 0x11, 0x01 },
 337
 338         { 0x3d, 0x03 },
 339         { 0x17, 0x26 },
 340         { 0x18, 0xa0 },
 341         { 0x19, 0x07 },
 342         { 0x1a, 0xf0 },
 343         { 0x32, 0x00 },
 344         { 0x29, 0xa0 },
 345         { 0x2c, 0xf0 },
 346         { 0x65, 0x20 },
 347         { 0x11, 0x01 },
 348         { 0x42, 0x7f },
 349         { 0x63, 0xaa },         /* AWB - was e0 */
 350         { 0x64, 0xff },
 351         { 0x66, 0x00 },
 352         { 0x13, 0xf0 },         /* com8 */
 353         { 0x0d, 0x41 },
 354         { 0x0f, 0xc5 },
 355         { 0x14, 0x11 },
 356
 357         { 0x22, 0x7f },
 358         { 0x23, 0x03 },
 359         { 0x24, 0x40 },
 360         { 0x25, 0x30 },
 361         { 0x26, 0xa1 },
 362         { 0x2a, 0x00 },
 363         { 0x2b, 0x00 },
 364         { 0x6b, 0xaa },
 365         { 0x13, 0xff },         /* AWB */
 366
 367         { 0x90, 0x05 },
 368         { 0x91, 0x01 },
 369         { 0x92, 0x03 },
 370         { 0x93, 0x00 },
 371         { 0x94, 0x60 },
 372         { 0x95, 0x3c },
 373         { 0x96, 0x24 },
 374         { 0x97, 0x1e },
 375         { 0x98, 0x62 },
 376         { 0x99, 0x80 },
 377         { 0x9a, 0x1e },
 378         { 0x9b, 0x08 },
 379         { 0x9c, 0x20 },
 380         { 0x9e, 0x81 },
 381
 382         { 0xa6, 0x04 },
 383         { 0x7e, 0x0c },
 384         { 0x7f, 0x16 },
 385         { 0x80, 0x2a },
 386         { 0x81, 0x4e },
 387         { 0x82, 0x61 },
 388         { 0x83, 0x6f },
 389         { 0x84, 0x7b },
 390         { 0x85, 0x86 },
 391         { 0x86, 0x8e },
 392         { 0x87, 0x97 },
 393         { 0x88, 0xa4 },
 394         { 0x89, 0xaf },
 395         { 0x8a, 0xc5 },
 396         { 0x8b, 0xd7 },
 397         { 0x8c, 0xe8 },
 398         { 0x8d, 0x20 },
 399
 400         { 0x0c, 0x90 },
 401
 402         { 0x2b, 0x00 },
 403         { 0x22, 0x7f },
 404         { 0x23, 0x03 },
 405         { 0x11, 0x01 },
 406         { 0x0c, 0xd0 },
 407         { 0x64, 0xff },
 408         { 0x0d, 0x41 },
 409
 410         { 0x14, 0x41 },
 411         { 0x0e, 0xcd },
 412         { 0xac, 0xbf },
 413         { 0x8e, 0x00 },         /* De-noise threshold */
 414         { 0x0c, 0xd0 }
 415 };
 416 static const u8 bridge_start_vga[][2] = {
 417         {0x1c, 0x00},
 418         {0x1d, 0x40},
 419         {0x1d, 0x02},
 420         {0x1d, 0x00},
 421         {0x1d, 0x02},
 422         {0x1d, 0x58},
 423         {0x1d, 0x00},
 424         {0xc0, 0x50},
 425         {0xc1, 0x3c},
 426 };
 427 static const u8 sensor_start_vga[][2] = {
 428         {0x12, 0x00},
 429         {0x17, 0x26},
 430         {0x18, 0xa0},
 431         {0x19, 0x07},
 432         {0x1a, 0xf0},
 433         {0x29, 0xa0},
 434         {0x2c, 0xf0},
 435         {0x65, 0x20},
 436 };
 437 static const u8 bridge_start_qvga[][2] = {
 438         {0x1c, 0x00},
 439         {0x1d, 0x40},
 440         {0x1d, 0x02},
 441         {0x1d, 0x00},
 442         {0x1d, 0x01},
 443         {0x1d, 0x4b},
 444         {0x1d, 0x00},
 445         {0xc0, 0x28},
 446         {0xc1, 0x1e},
 447 };
 448 static const u8 sensor_start_qvga[][2] = {
 449         {0x12, 0x40},
 450         {0x17, 0x3f},
 451         {0x18, 0x50},
 452         {0x19, 0x03},
 453         {0x1a, 0x78},
 454         {0x29, 0x50},
 455         {0x2c, 0x78},
 456         {0x65, 0x2f},
 457 };
 458
 459 static void ov534_reg_write(struct gspca_dev *gspca_dev, u16 reg, u8 val)
 460 {
 461         struct usb_device *udev = gspca_dev->dev;
 462         int ret;
 463
 464         PDEBUG(D_USBO, "reg=0x%04x, val=0%02x", reg, val);
 465         gspca_dev->usb_buf[0] = val;
 466         ret = usb_control_msg(udev,
 467                               usb_sndctrlpipe(udev, 0),
 468                               0x01,
 469                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 470                               0x00, reg, gspca_dev->usb_buf, 1, CTRL_TIMEOUT);
 471         if (ret < 0)
 472                 PDEBUG(D_ERR, "write failed");
 473 }
 474
 475 static u8 ov534_reg_read(struct gspca_dev *gspca_dev, u16 reg)
 476 {
 477         struct usb_device *udev = gspca_dev->dev;
 478         int ret;
 479
 480         ret = usb_control_msg(udev,
 481                               usb_rcvctrlpipe(udev, 0),
 482                               0x01,
 483                               USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 484                               0x00, reg, gspca_dev->usb_buf, 1, CTRL_TIMEOUT);
 485         PDEBUG(D_USBI, "reg=0x%04x, data=0x%02x", reg, gspca_dev->usb_buf[0]);
 486         if (ret < 0)
 487                 PDEBUG(D_ERR, "read failed");
 488         return gspca_dev->usb_buf[0];
 489 }
 490
 491 /* Two bits control LED: 0x21 bit 7 and 0x23 bit 7.
 492  * (direction and output)? */
 493 static void ov534_set_led(struct gspca_dev *gspca_dev, int status)
 494 {
 495         u8 data;
 496
 497         PDEBUG(D_CONF, "led status: %d", status);
 498
 499         data = ov534_reg_read(gspca_dev, 0x21);
 500         data |= 0x80;
 501         ov534_reg_write(gspca_dev, 0x21, data);
 502
 503         data = ov534_reg_read(gspca_dev, 0x23);
 504         if (status)
 505                 data |= 0x80;
 506         else
 507                 data &= ~0x80;
 508
 509         ov534_reg_write(gspca_dev, 0x23, data);
 510
 511         if (!status) {
 512                 data = ov534_reg_read(gspca_dev, 0x21);
 513                 data &= ~0x80;
 514                 ov534_reg_write(gspca_dev, 0x21, data);
 515         }
 516 }
 517
 518 static int sccb_check_status(struct gspca_dev *gspca_dev)
 519 {
 520         u8 data;
 521         int i;
 522
 523         for (i = 0; i < 5; i++) {
 524                 data = ov534_reg_read(gspca_dev, OV534_REG_STATUS);
 525
 526                 switch (data) {
 527                 case 0x00:
 528                         return 1;
 529                 case 0x04:
 530                         return 0;
 531                 case 0x03:
 532                         break;
 533                 default:
 534                         PDEBUG(D_ERR, "sccb status 0x%02x, attempt %d/5",
 535                                data, i + 1);
 536                 }
 537         }
 538         return 0;
 539 }
 540
 541 static void sccb_reg_write(struct gspca_dev *gspca_dev, u8 reg, u8 val)
 542 {
 543         PDEBUG(D_USBO, "reg: 0x%02x, val: 0x%02x", reg, val);
 544         ov534_reg_write(gspca_dev, OV534_REG_SUBADDR, reg);
 545         ov534_reg_write(gspca_dev, OV534_REG_WRITE, val);
 546         ov534_reg_write(gspca_dev, OV534_REG_OPERATION, OV534_OP_WRITE_3);
 547
 548         if (!sccb_check_status(gspca_dev))
 549                 PDEBUG(D_ERR, "sccb_reg_write failed");
 550 }
 551
 552 static u8 sccb_reg_read(struct gspca_dev *gspca_dev, u16 reg)
 553 {
 554         ov534_reg_write(gspca_dev, OV534_REG_SUBADDR, reg);
 555         ov534_reg_write(gspca_dev, OV534_REG_OPERATION, OV534_OP_WRITE_2);
 556         if (!sccb_check_status(gspca_dev))
 557                 PDEBUG(D_ERR, "sccb_reg_read failed 1");
 558
 559         ov534_reg_write(gspca_dev, OV534_REG_OPERATION, OV534_OP_READ_2);
 560         if (!sccb_check_status(gspca_dev))
 561                 PDEBUG(D_ERR, "sccb_reg_read failed 2");
 562
 563         return ov534_reg_read(gspca_dev, OV534_REG_READ);
 564 }
 565
 566 /* output a bridge sequence (reg - val) */
 567 static void reg_w_array(struct gspca_dev *gspca_dev,
 568                         const u8 (*data)[2], int len)
 569 {
 570         while (--len >= 0) {
 571                 ov534_reg_write(gspca_dev, (*data)[0], (*data)[1]);
 572                 data++;
 573         }
 574 }
 575
 576 /* output a sensor sequence (reg - val) */
 577 static void sccb_w_array(struct gspca_dev *gspca_dev,
 578                         const u8 (*data)[2], int len)
 579 {
 580         while (--len >= 0) {
 581                 if ((*data)[0] != 0xff) {
 582                         sccb_reg_write(gspca_dev, (*data)[0], (*data)[1]);
 583                 } else {
 584                         sccb_reg_read(gspca_dev, (*data)[1]);
 585                         sccb_reg_write(gspca_dev, 0xff, 0x00);
 586                 }
 587                 data++;
 588         }
 589 }
 590
 591 /* ov772x specific controls */
 592 static void set_frame_rate(struct gspca_dev *gspca_dev)
 593 {
 594         struct sd *sd = (struct sd *) gspca_dev;
 595         int i;
 596         struct rate_s {
 597                 u8 fps;
 598                 u8 r11;
 599                 u8 r0d;
 600                 u8 re5;
 601         };
 602         const struct rate_s *r;
 603         static const struct rate_s rate_0[] = { /* 640x480 */
 604                 {60, 0x01, 0xc1, 0x04},
 605                 {50, 0x01, 0x41, 0x02},
 606                 {40, 0x02, 0xc1, 0x04},
 607                 {30, 0x04, 0x81, 0x02},
 608                 {15, 0x03, 0x41, 0x04},
 609         };
 610         static const struct rate_s rate_1[] = { /* 320x240 */
 611                 {125, 0x02, 0x81, 0x02},
 612                 {100, 0x02, 0xc1, 0x04},
 613                 {75, 0x03, 0xc1, 0x04},
 614                 {60, 0x04, 0xc1, 0x04},
 615                 {50, 0x02, 0x41, 0x04},
 616                 {40, 0x03, 0x41, 0x04},
 617                 {30, 0x04, 0x41, 0x04},
 618         };
 619
 620         if (gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv == 0) {
 621                 r = rate_0;
 622                 i = ARRAY_SIZE(rate_0);
 623         } else {
 624                 r = rate_1;
 625                 i = ARRAY_SIZE(rate_1);
 626         }
 627         while (--i > 0) {
 628                 if (sd->frame_rate >= r->fps)
 629                         break;
 630                 r++;
 631         }
 632
 633         sccb_reg_write(gspca_dev, 0x11, r->r11);
 634         sccb_reg_write(gspca_dev, 0x0d, r->r0d);
 635         ov534_reg_write(gspca_dev, 0xe5, r->re5);
 636
 637         PDEBUG(D_PROBE, "frame_rate: %d", r->fps);
 638 }
 639
 640 static void setbrightness(struct gspca_dev *gspca_dev)
 641 {
 642         struct sd *sd = (struct sd *) gspca_dev;
 643
 644         sccb_reg_write(gspca_dev, 0x9b, sd->brightness);
 645 }
 646
 647 static void setcontrast(struct gspca_dev *gspca_dev)
 648 {
 649         struct sd *sd = (struct sd *) gspca_dev;
 650
 651         sccb_reg_write(gspca_dev, 0x9c, sd->contrast);
 652 }
 653
 654 static void setgain(struct gspca_dev *gspca_dev)
 655 {
 656         struct sd *sd = (struct sd *) gspca_dev;
 657         u8 val;
 658
 659         if (sd->agc)
 660                 return;
 661
 662         val = sd->gain;
 663         switch (val & 0x30) {
 664         case 0x00:
 665                 val &= 0x0f;
 666                 break;
 667         case 0x10:
 668                 val &= 0x0f;
 669                 val |= 0x30;
 670                 break;
 671         case 0x20:
 672                 val &= 0x0f;
 673                 val |= 0x70;
 674                 break;
 675         default:
 676 /*      case 0x30: */
 677                 val &= 0x0f;
 678                 val |= 0xf0;
 679                 break;
 680         }
 681         sccb_reg_write(gspca_dev, 0x00, val);
 682 }
 683
 684 static void setexposure(struct gspca_dev *gspca_dev)
 685 {
 686         struct sd *sd = (struct sd *) gspca_dev;
 687         u8 val;
 688
 689         if (sd->aec)
 690                 return;
 691
 692         /* 'val' is one byte and represents half of the exposure value we are
 693          * going to set into registers, a two bytes value:
 694          *
 695          *    MSB: ((u16) val << 1) >> 8   == val >> 7
 696          *    LSB: ((u16) val << 1) & 0xff == val << 1
 697          */
 698         val = sd->exposure;
 699         sccb_reg_write(gspca_dev, 0x08, val >> 7);
 700         sccb_reg_write(gspca_dev, 0x10, val << 1);
 701 }
 702
 703 static void setagc(struct gspca_dev *gspca_dev)
 704 {
 705         struct sd *sd = (struct sd *) gspca_dev;
 706
 707         if (sd->agc) {
 708                 sccb_reg_write(gspca_dev, 0x13,
 709                                 sccb_reg_read(gspca_dev, 0x13) | 0x04);
 710                 sccb_reg_write(gspca_dev, 0x64,
 711                                 sccb_reg_read(gspca_dev, 0x64) | 0x03);
 712         } else {
 713                 sccb_reg_write(gspca_dev, 0x13,
 714                                 sccb_reg_read(gspca_dev, 0x13) & ~0x04);
 715                 sccb_reg_write(gspca_dev, 0x64,
 716                                 sccb_reg_read(gspca_dev, 0x64) & ~0x03);
 717
 718                 setgain(gspca_dev);
 719         }
 720 }
 721
 722 static void setawb(struct gspca_dev *gspca_dev)
 723 {
 724         struct sd *sd = (struct sd *) gspca_dev;
 725
 726         if (sd->awb) {
 727                 sccb_reg_write(gspca_dev, 0x13,
 728                                 sccb_reg_read(gspca_dev, 0x13) | 0x02);
 729                 sccb_reg_write(gspca_dev, 0x63,
 730                                 sccb_reg_read(gspca_dev, 0x63) | 0xc0);
 731         } else {
 732                 sccb_reg_write(gspca_dev, 0x13,
 733                                 sccb_reg_read(gspca_dev, 0x13) & ~0x02);
 734                 sccb_reg_write(gspca_dev, 0x63,
 735                                 sccb_reg_read(gspca_dev, 0x63) & ~0xc0);
 736         }
 737 }
 738
 739 static void setaec(struct gspca_dev *gspca_dev)
 740 {
 741         struct sd *sd = (struct sd *) gspca_dev;
 742
 743         if (sd->aec)
 744                 sccb_reg_write(gspca_dev, 0x13,
 745                                 sccb_reg_read(gspca_dev, 0x13) | 0x01);
 746         else {
 747                 sccb_reg_write(gspca_dev, 0x13,
 748                                 sccb_reg_read(gspca_dev, 0x13) & ~0x01);
 749                 setexposure(gspca_dev);
 750         }
 751 }
 752
 753 static void setsharpness(struct gspca_dev *gspca_dev)
 754 {
 755         struct sd *sd = (struct sd *) gspca_dev;
 756         u8 val;
 757
 758         val = sd->sharpness;
 759         sccb_reg_write(gspca_dev, 0x91, val);   /* Auto de-noise threshold */
 760         sccb_reg_write(gspca_dev, 0x8e, val);   /* De-noise threshold */
 761 }
 762
 763 static void sethflip(struct gspca_dev *gspca_dev)
 764 {
 765         struct sd *sd = (struct sd *) gspca_dev;
 766
 767         if (sd->hflip == 0)
 768                 sccb_reg_write(gspca_dev, 0x0c,
 769                                 sccb_reg_read(gspca_dev, 0x0c) | 0x40);
 770         else
 771                 sccb_reg_write(gspca_dev, 0x0c,
 772                                 sccb_reg_read(gspca_dev, 0x0c) & ~0x40);
 773 }
 774
 775 static void setvflip(struct gspca_dev *gspca_dev)
 776 {
 777         struct sd *sd = (struct sd *) gspca_dev;
 778
 779         if (sd->vflip == 0)
 780                 sccb_reg_write(gspca_dev, 0x0c,
 781                                 sccb_reg_read(gspca_dev, 0x0c) | 0x80);
 782         else
 783                 sccb_reg_write(gspca_dev, 0x0c,
 784                                 sccb_reg_read(gspca_dev, 0x0c) & ~0x80);
 785 }
 786
 787 /* this function is called at probe time */
 788 static int sd_config(struct gspca_dev *gspca_dev,
 789                      const struct usb_device_id *id)
 790 {
 791         struct sd *sd = (struct sd *) gspca_dev;
 792         struct cam *cam;
 793
 794         cam = &gspca_dev->cam;
 795
 796         cam->cam_mode = ov772x_mode;
 797         cam->nmodes = ARRAY_SIZE(ov772x_mode);
 798         cam->mode_framerates = ov772x_framerates;
 799
 800         cam->bulk = 1;
 801         cam->bulk_size = 16384;
 802         cam->bulk_nurbs = 2;
 803
 804         sd->frame_rate = 30;
 805
 806         sd->brightness = BRIGHTNESS_DEF;
 807         sd->contrast = CONTRAST_DEF;
 808         sd->gain = GAIN_DEF;
 809         sd->exposure = EXPO_DEF;
 810 #if AGC_DEF != 0
 811         sd->agc = AGC_DEF;
 812 #else
 813         gspca_dev->ctrl_inac |= (1 << AWB_IDX);
 814 #endif
 815         sd->awb = AWB_DEF;
 816         sd->aec = AEC_DEF;
 817         sd->sharpness = SHARPNESS_DEF;
 818         sd->hflip = HFLIP_DEF;
 819         sd->vflip = VFLIP_DEF;
 820
 821         return 0;
 822 }
 823
 824 /* this function is called at probe and resume time */
 825 static int sd_init(struct gspca_dev *gspca_dev)
 826 {
 827         u16 sensor_id;
 828
 829         /* reset bridge */
 830         ov534_reg_write(gspca_dev, 0xe7, 0x3a);
 831         ov534_reg_write(gspca_dev, 0xe0, 0x08);
 832         msleep(100);
 833
 834         /* initialize the sensor address */
 835         ov534_reg_write(gspca_dev, OV534_REG_ADDRESS, 0x42);
 836
 837         /* reset sensor */
 838         sccb_reg_write(gspca_dev, 0x12, 0x80);
 839         msleep(10);
 840
 841         /* probe the sensor */
 842         sccb_reg_read(gspca_dev, 0x0a);
 843         sensor_id = sccb_reg_read(gspca_dev, 0x0a) << 8;
 844         sccb_reg_read(gspca_dev, 0x0b);
 845         sensor_id |= sccb_reg_read(gspca_dev, 0x0b);
 846         PDEBUG(D_PROBE, "Sensor ID: %04x", sensor_id);
 847
 848         /* initialize */
 849         reg_w_array(gspca_dev, bridge_init,
 850                         ARRAY_SIZE(bridge_init));
 851         ov534_set_led(gspca_dev, 1);
 852         sccb_w_array(gspca_dev, sensor_init,
 853                         ARRAY_SIZE(sensor_init));
 854         ov534_reg_write(gspca_dev, 0xe0, 0x09);
 855         ov534_set_led(gspca_dev, 0);
 856         set_frame_rate(gspca_dev);
 857
 858         return 0;
 859 }
 860
 861 static int sd_start(struct gspca_dev *gspca_dev)
 862 {
 863         int mode;
 864
 865         mode = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
 866         if (mode != 0) {        /* 320x240 */
 867                 reg_w_array(gspca_dev, bridge_start_qvga,
 868                                 ARRAY_SIZE(bridge_start_qvga));
 869                 sccb_w_array(gspca_dev, sensor_start_qvga,
 870                                 ARRAY_SIZE(sensor_start_qvga));
 871         } else {                /* 640x480 */
 872                 reg_w_array(gspca_dev, bridge_start_vga,
 873                                 ARRAY_SIZE(bridge_start_vga));
 874                 sccb_w_array(gspca_dev, sensor_start_vga,
 875                                 ARRAY_SIZE(sensor_start_vga));
 876         }
 877         set_frame_rate(gspca_dev);
 878
 879         setagc(gspca_dev);
 880         setawb(gspca_dev);
 881         setaec(gspca_dev);
 882         setgain(gspca_dev);
 883         setexposure(gspca_dev);
 884         setbrightness(gspca_dev);
 885         setcontrast(gspca_dev);
 886         setsharpness(gspca_dev);
 887         setvflip(gspca_dev);
 888         sethflip(gspca_dev);
 889
 890         ov534_set_led(gspca_dev, 1);
 891         ov534_reg_write(gspca_dev, 0xe0, 0x00);
 892         return 0;
 893 }
 894
 895 static void sd_stopN(struct gspca_dev *gspca_dev)
 896 {
 897         ov534_reg_write(gspca_dev, 0xe0, 0x09);
 898         ov534_set_led(gspca_dev, 0);
 899 }
 900
 901 /* Values for bmHeaderInfo (Video and Still Image Payload Headers, 2.4.3.3) */
 902 #define UVC_STREAM_EOH  (1 << 7)
 903 #define UVC_STREAM_ERR  (1 << 6)
 904 #define UVC_STREAM_STI  (1 << 5)
 905 #define UVC_STREAM_RES  (1 << 4)
 906 #define UVC_STREAM_SCR  (1 << 3)
 907 #define UVC_STREAM_PTS  (1 << 2)
 908 #define UVC_STREAM_EOF  (1 << 1)
 909 #define UVC_STREAM_FID  (1 << 0)
 910
 911 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 912                         u8 *data, int len)
 913 {
 914         struct sd *sd = (struct sd *) gspca_dev;
 915         __u32 this_pts;
 916         u16 this_fid;
 917         int remaining_len = len;
 918
 919         do {
 920                 len = min(remaining_len, 2048);
 921
 922                 /* Payloads are prefixed with a UVC-style header.  We
 923                    consider a frame to start when the FID toggles, or the PTS
 924                    changes.  A frame ends when EOF is set, and we've received
 925                    the correct number of bytes. */
 926
 927                 /* Verify UVC header.  Header length is always 12 */
 928                 if (data[0] != 12 || len < 12) {
 929                         PDEBUG(D_PACK, "bad header");
 930                         goto discard;
 931                 }
 932
 933                 /* Check errors */
 934                 if (data[1] & UVC_STREAM_ERR) {
 935                         PDEBUG(D_PACK, "payload error");
 936                         goto discard;
 937                 }
 938
 939                 /* Extract PTS and FID */
 940                 if (!(data[1] & UVC_STREAM_PTS)) {
 941                         PDEBUG(D_PACK, "PTS not present");
 942                         goto discard;
 943                 }
 944                 this_pts = (data[5] << 24) | (data[4] << 16)
 945                                                 | (data[3] << 8) | data[2];
 946                 this_fid = (data[1] & UVC_STREAM_FID) ? 1 : 0;
 947
 948                 /* If PTS or FID has changed, start a new frame. */
 949                 if (this_pts != sd->last_pts || this_fid != sd->last_fid) {
 950                         if (gspca_dev->last_packet_type == INTER_PACKET)
 951                                 gspca_frame_add(gspca_dev, LAST_PACKET,
 952                                                 NULL, 0);
 953                         sd->last_pts = this_pts;
 954                         sd->last_fid = this_fid;
 955                         gspca_frame_add(gspca_dev, FIRST_PACKET,
 956                                         data + 12, len - 12);
 957                 /* If this packet is marked as EOF, end the frame */
 958                 } else if (data[1] & UVC_STREAM_EOF) {
 959                         struct gspca_frame *frame;
 960
 961                         sd->last_pts = 0;
 962                         frame = gspca_get_i_frame(gspca_dev);
 963                         if (frame == NULL)
 964                                 goto discard;
 965                         if (frame->data_end - frame->data + (len - 12) !=
 966                             gspca_dev->width * gspca_dev->height * 2) {
 967                                 PDEBUG(D_PACK, "wrong sized frame");
 968                                 goto discard;
 969                         }
 970                         gspca_frame_add(gspca_dev, LAST_PACKET,
 971                                         data + 12, len - 12);
 972                 } else {
 973
 974                         /* Add the data from this payload */
 975                         gspca_frame_add(gspca_dev, INTER_PACKET,
 976                                         data + 12, len - 12);
 977                 }
 978
 979                 /* Done this payload */
 980                 goto scan_next;
 981
 982 discard:
 983                 /* Discard data until a new frame starts. */
 984                 gspca_dev->last_packet_type = DISCARD_PACKET;
 985
 986 scan_next:
 987                 remaining_len -= len;
 988                 data += len;
 989         } while (remaining_len > 0);
 990 }
 991
 992 /* controls */
 993 static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val)
 994 {
 995         struct sd *sd = (struct sd *) gspca_dev;
 996
 997         sd->gain = val;
 998         if (gspca_dev->streaming)
 999                 setgain(gspca_dev);
1000         return 0;
1001 }
1002
1003 static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val)
1004 {
1005         struct sd *sd = (struct sd *) gspca_dev;
1006
1007         *val = sd->gain;
1008         return 0;
1009 }
1010
1011 static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val)
1012 {
1013         struct sd *sd = (struct sd *) gspca_dev;
1014
1015         sd->exposure = val;
1016         if (gspca_dev->streaming)
1017                 setexposure(gspca_dev);
1018         return 0;
1019 }
1020
1021 static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val)
1022 {
1023         struct sd *sd = (struct sd *) gspca_dev;
1024
1025         *val = sd->exposure;
1026         return 0;
1027 }
1028
1029 static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
1030 {
1031         struct sd *sd = (struct sd *) gspca_dev;
1032
1033         sd->brightness = val;
1034         if (gspca_dev->streaming)
1035                 setbrightness(gspca_dev);
1036         return 0;
1037 }
1038
1039 static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
1040 {
1041         struct sd *sd = (struct sd *) gspca_dev;
1042
1043         *val = sd->brightness;
1044         return 0;
1045 }
1046
1047 static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
1048 {
1049         struct sd *sd = (struct sd *) gspca_dev;
1050
1051         sd->contrast = val;
1052         if (gspca_dev->streaming)
1053                 setcontrast(gspca_dev);
1054         return 0;
1055 }
1056
1057 static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
1058 {
1059         struct sd *sd = (struct sd *) gspca_dev;
1060
1061         *val = sd->contrast;
1062         return 0;
1063 }
1064
1065 static int sd_setagc(struct gspca_dev *gspca_dev, __s32 val)
1066 {
1067         struct sd *sd = (struct sd *) gspca_dev;
1068
1069         sd->agc = val;
1070
1071         if (gspca_dev->streaming) {
1072
1073                 /* the auto white balance control works only
1074                  * when auto gain is set */
1075                 if (val)
1076                         gspca_dev->ctrl_inac &= ~(1 << AWB_IDX);
1077                 else
1078                         gspca_dev->ctrl_inac |= (1 << AWB_IDX);
1079                 setagc(gspca_dev);
1080         }
1081         return 0;
1082 }
1083
1084 static int sd_getagc(struct gspca_dev *gspca_dev, __s32 *val)
1085 {
1086         struct sd *sd = (struct sd *) gspca_dev;
1087
1088         *val = sd->agc;
1089         return 0;
1090 }
1091
1092 static int sd_setawb(struct gspca_dev *gspca_dev, __s32 val)
1093 {
1094         struct sd *sd = (struct sd *) gspca_dev;
1095
1096         sd->awb = val;
1097         if (gspca_dev->streaming)
1098                 setawb(gspca_dev);
1099         return 0;
1100 }
1101
1102 static int sd_getawb(struct gspca_dev *gspca_dev, __s32 *val)
1103 {
1104         struct sd *sd = (struct sd *) gspca_dev;
1105
1106         *val = sd->awb;
1107         return 0;
1108 }
1109
1110 static int sd_setaec(struct gspca_dev *gspca_dev, __s32 val)
1111 {
1112         struct sd *sd = (struct sd *) gspca_dev;
1113
1114         sd->aec = val;
1115         if (gspca_dev->streaming)
1116                 setaec(gspca_dev);
1117         return 0;
1118 }
1119
1120 static int sd_getaec(struct gspca_dev *gspca_dev, __s32 *val)
1121 {
1122         struct sd *sd = (struct sd *) gspca_dev;
1123
1124         *val = sd->aec;
1125         return 0;
1126 }
1127
1128 static int sd_setsharpness(struct gspca_dev *gspca_dev, __s32 val)
1129 {
1130         struct sd *sd = (struct sd *) gspca_dev;
1131
1132         sd->sharpness = val;
1133         if (gspca_dev->streaming)
1134                 setsharpness(gspca_dev);
1135         return 0;
1136 }
1137
1138 static int sd_getsharpness(struct gspca_dev *gspca_dev, __s32 *val)
1139 {
1140         struct sd *sd = (struct sd *) gspca_dev;
1141
1142         *val = sd->sharpness;
1143         return 0;
1144 }
1145
1146 static int sd_sethflip(struct gspca_dev *gspca_dev, __s32 val)
1147 {
1148         struct sd *sd = (struct sd *) gspca_dev;
1149
1150         sd->hflip = val;
1151         if (gspca_dev->streaming)
1152                 sethflip(gspca_dev);
1153         return 0;
1154 }
1155
1156 static int sd_gethflip(struct gspca_dev *gspca_dev, __s32 *val)
1157 {
1158         struct sd *sd = (struct sd *) gspca_dev;
1159
1160         *val = sd->hflip;
1161         return 0;
1162 }
1163
1164 static int sd_setvflip(struct gspca_dev *gspca_dev, __s32 val)
1165 {
1166         struct sd *sd = (struct sd *) gspca_dev;
1167
1168         sd->vflip = val;
1169         if (gspca_dev->streaming)
1170                 setvflip(gspca_dev);
1171         return 0;
1172 }
1173
1174 static int sd_getvflip(struct gspca_dev *gspca_dev, __s32 *val)
1175 {
1176         struct sd *sd = (struct sd *) gspca_dev;
1177
1178         *val = sd->vflip;
1179         return 0;
1180 }
1181
1182 /* get stream parameters (framerate) */
1183 static int sd_get_streamparm(struct gspca_dev *gspca_dev,
1184                              struct v4l2_streamparm *parm)
1185 {
1186         struct v4l2_captureparm *cp = &parm->parm.capture;
1187         struct v4l2_fract *tpf = &cp->timeperframe;
1188         struct sd *sd = (struct sd *) gspca_dev;
1189
1190         if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1191                 return -EINVAL;
1192
1193         cp->capability |= V4L2_CAP_TIMEPERFRAME;
1194         tpf->numerator = 1;
1195         tpf->denominator = sd->frame_rate;
1196
1197         return 0;
1198 }
1199
1200 /* set stream parameters (framerate) */
1201 static int sd_set_streamparm(struct gspca_dev *gspca_dev,
1202                              struct v4l2_streamparm *parm)
1203 {
1204         struct v4l2_captureparm *cp = &parm->parm.capture;
1205         struct v4l2_fract *tpf = &cp->timeperframe;
1206         struct sd *sd = (struct sd *) gspca_dev;
1207
1208         if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1209                 return -EINVAL;
1210
1211         /* Set requested framerate */
1212         sd->frame_rate = tpf->denominator / tpf->numerator;
1213         if (gspca_dev->streaming)
1214                 set_frame_rate(gspca_dev);
1215
1216         /* Return the actual framerate */
1217         tpf->numerator = 1;
1218         tpf->denominator = sd->frame_rate;
1219
1220         return 0;
1221 }
1222
1223 /* sub-driver description */
1224 static const struct sd_desc sd_desc = {
1225         .name     = MODULE_NAME,
1226         .ctrls    = sd_ctrls,
1227         .nctrls   = ARRAY_SIZE(sd_ctrls),
1228         .config   = sd_config,
1229         .init     = sd_init,
1230         .start    = sd_start,
1231         .stopN    = sd_stopN,
1232         .pkt_scan = sd_pkt_scan,
1233         .get_streamparm = sd_get_streamparm,
1234         .set_streamparm = sd_set_streamparm,
1235 };
1236
1237 /* -- module initialisation -- */
1238 static const __devinitdata struct usb_device_id device_table[] = {
1239         {USB_DEVICE(0x1415, 0x2000)},
1240         {}
1241 };
1242
1243 MODULE_DEVICE_TABLE(usb, device_table);
1244
1245 /* -- device connect -- */
1246 static int sd_probe(struct usb_interface *intf, const struct usb_device_id *id)
1247 {
1248         return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
1249                                 THIS_MODULE);
1250 }
1251
1252 static struct usb_driver sd_driver = {
1253         .name       = MODULE_NAME,
1254         .id_table   = device_table,
1255         .probe      = sd_probe,
1256         .disconnect = gspca_disconnect,
1257 #ifdef CONFIG_PM
1258         .suspend    = gspca_suspend,
1259         .resume     = gspca_resume,
1260 #endif
1261 };
1262
1263 /* -- module insert / remove -- */
1264 static int __init sd_mod_init(void)
1265 {
1266         int ret;
1267
1268         ret = usb_register(&sd_driver);
1269         if (ret < 0)
1270                 return ret;
1271         PDEBUG(D_PROBE, "registered");
1272         return 0;
1273 }
1274
1275 static void __exit sd_mod_exit(void)
1276 {
1277         usb_deregister(&sd_driver);
1278         PDEBUG(D_PROBE, "deregistered");
1279 }
1280
1281 module_init(sd_mod_init);
1282 module_exit(sd_mod_exit);