drivers/media/video/gspca/gl860/gl860.c

   1 /* GSPCA subdrivers for Genesys Logic webcams with the GL860 chip
   2  * Subdriver core
   3  *
   4  * 2009/09/24 Olivier Lorin <o.lorin@laposte.net>
   5  * GSPCA by Jean-Francois Moine <http://moinejf.free.fr>
   6  * Thanks BUGabundo and Malmostoso for your amazing help!
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  23
  24 #include "gspca.h"
  25 #include "gl860.h"
  26
  27 MODULE_AUTHOR("Olivier Lorin <o.lorin@laposte.net>");
  28 MODULE_DESCRIPTION("Genesys Logic USB PC Camera Driver");
  29 MODULE_LICENSE("GPL");
  30
  31 /*======================== static function declarations ====================*/
  32
  33 static void (*dev_init_settings)(struct gspca_dev *gspca_dev);
  34
  35 static int  sd_config(struct gspca_dev *gspca_dev,
  36                         const struct usb_device_id *id);
  37 static int  sd_init(struct gspca_dev *gspca_dev);
  38 static int  sd_isoc_init(struct gspca_dev *gspca_dev);
  39 static int  sd_start(struct gspca_dev *gspca_dev);
  40 static void sd_stop0(struct gspca_dev *gspca_dev);
  41 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
  42                         u8 *data, int len);
  43 static void sd_callback(struct gspca_dev *gspca_dev);
  44
  45 static int gl860_guess_sensor(struct gspca_dev *gspca_dev,
  46                                 u16 vendor_id, u16 product_id);
  47
  48 /*============================ driver options ==============================*/
  49
  50 static s32 AC50Hz = 0xff;
  51 module_param(AC50Hz, int, 0644);
  52 MODULE_PARM_DESC(AC50Hz, " Does AC power frequency is 50Hz? (0/1)");
  53
  54 static char sensor[7];
  55 module_param_string(sensor, sensor, sizeof(sensor), 0644);
  56 MODULE_PARM_DESC(sensor,
  57                 " Driver sensor ('MI1320'/'MI2020'/'OV9655'/'OV2640')");
  58
  59 /*============================ webcam controls =============================*/
  60
  61 /* Functions to get and set a control value */
  62 #define SD_SETGET(thename) \
  63 static int sd_set_##thename(struct gspca_dev *gspca_dev, s32 val)\
  64 {\
  65         struct sd *sd = (struct sd *) gspca_dev;\
  66 \
  67         sd->vcur.thename = val;\
  68         if (gspca_dev->streaming)\
  69                 sd->waitSet = 1;\
  70         return 0;\
  71 } \
  72 static int sd_get_##thename(struct gspca_dev *gspca_dev, s32 *val)\
  73 {\
  74         struct sd *sd = (struct sd *) gspca_dev;\
  75 \
  76         *val = sd->vcur.thename;\
  77         return 0;\
  78 }
  79
  80 SD_SETGET(mirror)
  81 SD_SETGET(flip)
  82 SD_SETGET(AC50Hz)
  83 SD_SETGET(backlight)
  84 SD_SETGET(brightness)
  85 SD_SETGET(gamma)
  86 SD_SETGET(hue)
  87 SD_SETGET(saturation)
  88 SD_SETGET(sharpness)
  89 SD_SETGET(whitebal)
  90 SD_SETGET(contrast)
  91
  92 #define GL860_NCTRLS 11
  93
  94 /* control table */
  95 static struct ctrl sd_ctrls_mi1320[GL860_NCTRLS];
  96 static struct ctrl sd_ctrls_mi2020[GL860_NCTRLS];
  97 static struct ctrl sd_ctrls_ov2640[GL860_NCTRLS];
  98 static struct ctrl sd_ctrls_ov9655[GL860_NCTRLS];
  99
 100 #define SET_MY_CTRL(theid, \
 101         thetype, thelabel, thename) \
 102         if (sd->vmax.thename != 0) {\
 103                 sd_ctrls[nCtrls].qctrl.id   = theid;\
 104                 sd_ctrls[nCtrls].qctrl.type = thetype;\
 105                 strcpy(sd_ctrls[nCtrls].qctrl.name, thelabel);\
 106                 sd_ctrls[nCtrls].qctrl.minimum = 0;\
 107                 sd_ctrls[nCtrls].qctrl.maximum = sd->vmax.thename;\
 108                 sd_ctrls[nCtrls].qctrl.default_value = sd->vcur.thename;\
 109                 sd_ctrls[nCtrls].qctrl.step = \
 110                         (sd->vmax.thename < 16) ? 1 : sd->vmax.thename/16;\
 111                 sd_ctrls[nCtrls].set = sd_set_##thename;\
 112                 sd_ctrls[nCtrls].get = sd_get_##thename;\
 113                 nCtrls++;\
 114         }
 115
 116 static int gl860_build_control_table(struct gspca_dev *gspca_dev)
 117 {
 118         struct sd *sd = (struct sd *) gspca_dev;
 119         struct ctrl *sd_ctrls;
 120         int nCtrls = 0;
 121
 122         if (_MI1320_)
 123                 sd_ctrls = sd_ctrls_mi1320;
 124         else if (_MI2020_)
 125                 sd_ctrls = sd_ctrls_mi2020;
 126         else if (_OV2640_)
 127                 sd_ctrls = sd_ctrls_ov2640;
 128         else if (_OV9655_)
 129                 sd_ctrls = sd_ctrls_ov9655;
 130         else
 131                 return 0;
 132
 133         memset(sd_ctrls, 0, GL860_NCTRLS * sizeof(struct ctrl));
 134
 135         SET_MY_CTRL(V4L2_CID_BRIGHTNESS,
 136                 V4L2_CTRL_TYPE_INTEGER, "Brightness", brightness)
 137         SET_MY_CTRL(V4L2_CID_SHARPNESS,
 138                 V4L2_CTRL_TYPE_INTEGER, "Sharpness", sharpness)
 139         SET_MY_CTRL(V4L2_CID_CONTRAST,
 140                 V4L2_CTRL_TYPE_INTEGER, "Contrast", contrast)
 141         SET_MY_CTRL(V4L2_CID_GAMMA,
 142                 V4L2_CTRL_TYPE_INTEGER, "Gamma", gamma)
 143         SET_MY_CTRL(V4L2_CID_HUE,
 144                 V4L2_CTRL_TYPE_INTEGER, "Palette", hue)
 145         SET_MY_CTRL(V4L2_CID_SATURATION,
 146                 V4L2_CTRL_TYPE_INTEGER, "Saturation", saturation)
 147         SET_MY_CTRL(V4L2_CID_WHITE_BALANCE_TEMPERATURE,
 148                 V4L2_CTRL_TYPE_INTEGER, "White Bal.", whitebal)
 149         SET_MY_CTRL(V4L2_CID_BACKLIGHT_COMPENSATION,
 150                 V4L2_CTRL_TYPE_INTEGER, "Backlight" , backlight)
 151
 152         SET_MY_CTRL(V4L2_CID_HFLIP,
 153                 V4L2_CTRL_TYPE_BOOLEAN, "Mirror", mirror)
 154         SET_MY_CTRL(V4L2_CID_VFLIP,
 155                 V4L2_CTRL_TYPE_BOOLEAN, "Flip", flip)
 156         SET_MY_CTRL(V4L2_CID_POWER_LINE_FREQUENCY,
 157                 V4L2_CTRL_TYPE_BOOLEAN, "AC power 50Hz", AC50Hz)
 158
 159         return nCtrls;
 160 }
 161
 162 /*==================== sud-driver structure initialisation =================*/
 163
 164 static const struct sd_desc sd_desc_mi1320 = {
 165         .name        = MODULE_NAME,
 166         .ctrls       = sd_ctrls_mi1320,
 167         .nctrls      = GL860_NCTRLS,
 168         .config      = sd_config,
 169         .init        = sd_init,
 170         .isoc_init   = sd_isoc_init,
 171         .start       = sd_start,
 172         .stop0       = sd_stop0,
 173         .pkt_scan    = sd_pkt_scan,
 174         .dq_callback = sd_callback,
 175 };
 176
 177 static const struct sd_desc sd_desc_mi2020 = {
 178         .name        = MODULE_NAME,
 179         .ctrls       = sd_ctrls_mi2020,
 180         .nctrls      = GL860_NCTRLS,
 181         .config      = sd_config,
 182         .init        = sd_init,
 183         .isoc_init   = sd_isoc_init,
 184         .start       = sd_start,
 185         .stop0       = sd_stop0,
 186         .pkt_scan    = sd_pkt_scan,
 187         .dq_callback = sd_callback,
 188 };
 189
 190 static const struct sd_desc sd_desc_ov2640 = {
 191         .name        = MODULE_NAME,
 192         .ctrls       = sd_ctrls_ov2640,
 193         .nctrls      = GL860_NCTRLS,
 194         .config      = sd_config,
 195         .init        = sd_init,
 196         .isoc_init   = sd_isoc_init,
 197         .start       = sd_start,
 198         .stop0       = sd_stop0,
 199         .pkt_scan    = sd_pkt_scan,
 200         .dq_callback = sd_callback,
 201 };
 202
 203 static const struct sd_desc sd_desc_ov9655 = {
 204         .name        = MODULE_NAME,
 205         .ctrls       = sd_ctrls_ov9655,
 206         .nctrls      = GL860_NCTRLS,
 207         .config      = sd_config,
 208         .init        = sd_init,
 209         .isoc_init   = sd_isoc_init,
 210         .start       = sd_start,
 211         .stop0       = sd_stop0,
 212         .pkt_scan    = sd_pkt_scan,
 213         .dq_callback = sd_callback,
 214 };
 215
 216 /*=========================== sub-driver image sizes =======================*/
 217
 218 static struct v4l2_pix_format mi2020_mode[] = {
 219         { 640,  480, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
 220                 .bytesperline = 640,
 221                 .sizeimage = 640 * 480,
 222                 .colorspace = V4L2_COLORSPACE_SRGB,
 223                 .priv = 0
 224         },
 225         { 800,  598, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
 226                 .bytesperline = 800,
 227                 .sizeimage = 800 * 598,
 228                 .colorspace = V4L2_COLORSPACE_SRGB,
 229                 .priv = 1
 230         },
 231         {1280, 1024, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
 232                 .bytesperline = 1280,
 233                 .sizeimage = 1280 * 1024,
 234                 .colorspace = V4L2_COLORSPACE_SRGB,
 235                 .priv = 2
 236         },
 237         {1600, 1198, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
 238                 .bytesperline = 1600,
 239                 .sizeimage = 1600 * 1198,
 240                 .colorspace = V4L2_COLORSPACE_SRGB,
 241                 .priv = 3
 242         },
 243 };
 244
 245 static struct v4l2_pix_format ov2640_mode[] = {
 246         { 640,  480, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
 247                 .bytesperline = 640,
 248                 .sizeimage = 640 * 480,
 249                 .colorspace = V4L2_COLORSPACE_SRGB,
 250                 .priv = 0
 251         },
 252         { 800,  600, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
 253                 .bytesperline = 800,
 254                 .sizeimage = 800 * 600,
 255                 .colorspace = V4L2_COLORSPACE_SRGB,
 256                 .priv = 1
 257         },
 258         {1280,  960, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
 259                 .bytesperline = 1280,
 260                 .sizeimage = 1280 * 960,
 261                 .colorspace = V4L2_COLORSPACE_SRGB,
 262                 .priv = 2
 263         },
 264         {1600, 1200, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
 265                 .bytesperline = 1600,
 266                 .sizeimage = 1600 * 1200,
 267                 .colorspace = V4L2_COLORSPACE_SRGB,
 268                 .priv = 3
 269         },
 270 };
 271
 272 static struct v4l2_pix_format mi1320_mode[] = {
 273         { 640,  480, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
 274                 .bytesperline = 640,
 275                 .sizeimage = 640 * 480,
 276                 .colorspace = V4L2_COLORSPACE_SRGB,
 277                 .priv = 0
 278         },
 279         { 800,  600, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
 280                 .bytesperline = 800,
 281                 .sizeimage = 800 * 600,
 282                 .colorspace = V4L2_COLORSPACE_SRGB,
 283                 .priv = 1
 284         },
 285         {1280,  960, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
 286                 .bytesperline = 1280,
 287                 .sizeimage = 1280 * 960,
 288                 .colorspace = V4L2_COLORSPACE_SRGB,
 289                 .priv = 2
 290         },
 291 };
 292
 293 static struct v4l2_pix_format ov9655_mode[] = {
 294         { 640,  480, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
 295                 .bytesperline = 640,
 296                 .sizeimage = 640 * 480,
 297                 .colorspace = V4L2_COLORSPACE_SRGB,
 298                 .priv = 0
 299         },
 300         {1280,  960, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
 301                 .bytesperline = 1280,
 302                 .sizeimage = 1280 * 960,
 303                 .colorspace = V4L2_COLORSPACE_SRGB,
 304                 .priv = 1
 305         },
 306 };
 307
 308 /*========================= sud-driver functions ===========================*/
 309
 310 /* This function is called at probe time */
 311 static int sd_config(struct gspca_dev *gspca_dev,
 312                         const struct usb_device_id *id)
 313 {
 314         struct sd *sd = (struct sd *) gspca_dev;
 315         struct cam *cam;
 316         u16 vendor_id, product_id;
 317
 318         /* Get USB VendorID and ProductID */
 319         vendor_id  = id->idVendor;
 320         product_id = id->idProduct;
 321
 322         sd->nbRightUp = 1;
 323         sd->nbIm = -1;
 324
 325         sd->sensor = 0xff;
 326         if (strcmp(sensor, "MI1320") == 0)
 327                 sd->sensor = ID_MI1320;
 328         else if (strcmp(sensor, "OV2640") == 0)
 329                 sd->sensor = ID_OV2640;
 330         else if (strcmp(sensor, "OV9655") == 0)
 331                 sd->sensor = ID_OV9655;
 332         else if (strcmp(sensor, "MI2020") == 0)
 333                 sd->sensor = ID_MI2020;
 334
 335         /* Get sensor and set the suitable init/start/../stop functions */
 336         if (gl860_guess_sensor(gspca_dev, vendor_id, product_id) == -1)
 337                 return -1;
 338
 339         cam = &gspca_dev->cam;
 340
 341         switch (sd->sensor) {
 342         case ID_MI1320:
 343                 gspca_dev->sd_desc = &sd_desc_mi1320;
 344                 cam->cam_mode = mi1320_mode;
 345                 cam->nmodes = ARRAY_SIZE(mi1320_mode);
 346                 dev_init_settings   = mi1320_init_settings;
 347                 break;
 348
 349         case ID_MI2020:
 350                 gspca_dev->sd_desc = &sd_desc_mi2020;
 351                 cam->cam_mode = mi2020_mode;
 352                 cam->nmodes = ARRAY_SIZE(mi2020_mode);
 353                 dev_init_settings   = mi2020_init_settings;
 354                 break;
 355
 356         case ID_OV2640:
 357                 gspca_dev->sd_desc = &sd_desc_ov2640;
 358                 cam->cam_mode = ov2640_mode;
 359                 cam->nmodes = ARRAY_SIZE(ov2640_mode);
 360                 dev_init_settings   = ov2640_init_settings;
 361                 break;
 362
 363         case ID_OV9655:
 364                 gspca_dev->sd_desc = &sd_desc_ov9655;
 365                 cam->cam_mode = ov9655_mode;
 366                 cam->nmodes = ARRAY_SIZE(ov9655_mode);
 367                 dev_init_settings   = ov9655_init_settings;
 368                 break;
 369         }
 370
 371         dev_init_settings(gspca_dev);
 372         if (AC50Hz != 0xff)
 373                 ((struct sd *) gspca_dev)->vcur.AC50Hz = AC50Hz;
 374         gl860_build_control_table(gspca_dev);
 375
 376         return 0;
 377 }
 378
 379 /* This function is called at probe time after sd_config */
 380 static int sd_init(struct gspca_dev *gspca_dev)
 381 {
 382         struct sd *sd = (struct sd *) gspca_dev;
 383
 384         return sd->dev_init_at_startup(gspca_dev);
 385 }
 386
 387 /* This function is called before to choose the alt setting */
 388 static int sd_isoc_init(struct gspca_dev *gspca_dev)
 389 {
 390         struct sd *sd = (struct sd *) gspca_dev;
 391
 392         return sd->dev_configure_alt(gspca_dev);
 393 }
 394
 395 /* This function is called to start the webcam */
 396 static int sd_start(struct gspca_dev *gspca_dev)
 397 {
 398         struct sd *sd = (struct sd *) gspca_dev;
 399
 400         return sd->dev_init_pre_alt(gspca_dev);
 401 }
 402
 403 /* This function is called to stop the webcam */
 404 static void sd_stop0(struct gspca_dev *gspca_dev)
 405 {
 406         struct sd *sd = (struct sd *) gspca_dev;
 407
 408         if (!sd->gspca_dev.present)
 409                 return;
 410
 411         return sd->dev_post_unset_alt(gspca_dev);
 412 }
 413
 414 /* This function is called when an image is being received */
 415 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 416                         u8 *data, int len)
 417 {
 418         struct sd *sd = (struct sd *) gspca_dev;
 419         static s32 nSkipped;
 420
 421         s32 mode = (s32) gspca_dev->curr_mode;
 422         s32 nToSkip =
 423                 sd->swapRB * (gspca_dev->cam.cam_mode[mode].bytesperline + 1);
 424
 425         /* Test only against 0202h, so endianess does not matter */
 426         switch (*(s16 *) data) {
 427         case 0x0202:            /* End of frame, start a new one */
 428                 gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
 429                 nSkipped = 0;
 430                 if (sd->nbIm >= 0 && sd->nbIm < 10)
 431                         sd->nbIm++;
 432                 gspca_frame_add(gspca_dev, FIRST_PACKET, NULL, 0);
 433                 break;
 434
 435         default:
 436                 data += 2;
 437                 len  -= 2;
 438                 if (nSkipped + len <= nToSkip)
 439                         nSkipped += len;
 440                 else {
 441                         if (nSkipped < nToSkip && nSkipped + len > nToSkip) {
 442                                 data += nToSkip - nSkipped;
 443                                 len  -= nToSkip - nSkipped;
 444                                 nSkipped = nToSkip + 1;
 445                         }
 446                         gspca_frame_add(gspca_dev,
 447                                 INTER_PACKET, data, len);
 448                 }
 449                 break;
 450         }
 451 }
 452
 453 /* This function is called when an image has been read */
 454 /* This function is used to monitor webcam orientation */
 455 static void sd_callback(struct gspca_dev *gspca_dev)
 456 {
 457         struct sd *sd = (struct sd *) gspca_dev;
 458
 459         if (!_OV9655_) {
 460                 u8 state;
 461                 u8 upsideDown;
 462
 463                 /* Probe sensor orientation */
 464                 ctrl_in(gspca_dev, 0xc0, 2, 0x0000, 0x0000, 1, (void *)&state);
 465
 466                 /* C8/40 means upside-down (looking backwards) */
 467                 /* D8/50 means right-up (looking onwards) */
 468                 upsideDown = (state == 0xc8 || state == 0x40);
 469
 470                 if (upsideDown && sd->nbRightUp > -4) {
 471                         if (sd->nbRightUp > 0)
 472                                 sd->nbRightUp = 0;
 473                         if (sd->nbRightUp == -3) {
 474                                 sd->mirrorMask = 1;
 475                                 sd->waitSet = 1;
 476                         }
 477                         sd->nbRightUp--;
 478                 }
 479                 if (!upsideDown && sd->nbRightUp < 4) {
 480                         if (sd->nbRightUp  < 0)
 481                                 sd->nbRightUp = 0;
 482                         if (sd->nbRightUp == 3) {
 483                                 sd->mirrorMask = 0;
 484                                 sd->waitSet = 1;
 485                         }
 486                         sd->nbRightUp++;
 487                 }
 488         }
 489
 490         if (sd->waitSet)
 491                 sd->dev_camera_settings(gspca_dev);
 492 }
 493
 494 /*=================== USB driver structure initialisation ==================*/
 495
 496 static const struct usb_device_id device_table[] = {
 497         {USB_DEVICE(0x05e3, 0x0503)},
 498         {USB_DEVICE(0x05e3, 0xf191)},
 499         {}
 500 };
 501
 502 MODULE_DEVICE_TABLE(usb, device_table);
 503
 504 static int sd_probe(struct usb_interface *intf,
 505                                 const struct usb_device_id *id)
 506 {
 507         return gspca_dev_probe(intf, id,
 508                         &sd_desc_mi1320, sizeof(struct sd), THIS_MODULE);
 509 }
 510
 511 static void sd_disconnect(struct usb_interface *intf)
 512 {
 513         gspca_disconnect(intf);
 514 }
 515
 516 static struct usb_driver sd_driver = {
 517         .name       = MODULE_NAME,
 518         .id_table   = device_table,
 519         .probe      = sd_probe,
 520         .disconnect = sd_disconnect,
 521 #ifdef CONFIG_PM
 522         .suspend    = gspca_suspend,
 523         .resume     = gspca_resume,
 524         .reset_resume = gspca_resume,
 525 #endif
 526 };
 527
 528 /*====================== Init and Exit module functions ====================*/
 529
 530 module_usb_driver(sd_driver);
 531
 532 /*==========================================================================*/
 533
 534 int gl860_RTx(struct gspca_dev *gspca_dev,
 535                 unsigned char pref, u32 req, u16 val, u16 index,
 536                 s32 len, void *pdata)
 537 {
 538         struct usb_device *udev = gspca_dev->dev;
 539         s32 r = 0;
 540
 541         if (pref == 0x40) { /* Send */
 542                 if (len > 0) {
 543                         memcpy(gspca_dev->usb_buf, pdata, len);
 544                         r = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
 545                                         req, pref, val, index,
 546                                         gspca_dev->usb_buf,
 547                                         len, 400 + 200 * (len > 1));
 548                 } else {
 549                         r = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
 550                                         req, pref, val, index, NULL, len, 400);
 551                 }
 552         } else { /* Receive */
 553                 if (len > 0) {
 554                         r = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
 555                                         req, pref, val, index,
 556                                         gspca_dev->usb_buf,
 557                                         len, 400 + 200 * (len > 1));
 558                         memcpy(pdata, gspca_dev->usb_buf, len);
 559                 } else {
 560                         r = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
 561                                         req, pref, val, index, NULL, len, 400);
 562                 }
 563         }
 564
 565         if (r < 0)
 566                 pr_err("ctrl transfer failed %4d [p%02x r%d v%04x i%04x len%d]\n",
 567                        r, pref, req, val, index, len);
 568         else if (len > 1 && r < len)
 569                 PDEBUG(D_ERR, "short ctrl transfer %d/%d", r, len);
 570
 571         msleep(1);
 572
 573         return r;
 574 }
 575
 576 int fetch_validx(struct gspca_dev *gspca_dev, struct validx *tbl, int len)
 577 {
 578         int n;
 579
 580         for (n = 0; n < len; n++) {
 581                 if (tbl[n].idx != 0xffff)
 582                         ctrl_out(gspca_dev, 0x40, 1, tbl[n].val,
 583                                         tbl[n].idx, 0, NULL);
 584                 else if (tbl[n].val == 0xffff)
 585                         break;
 586                 else
 587                         msleep(tbl[n].val);
 588         }
 589         return n;
 590 }
 591
 592 int keep_on_fetching_validx(struct gspca_dev *gspca_dev, struct validx *tbl,
 593                                 int len, int n)
 594 {
 595         while (++n < len) {
 596                 if (tbl[n].idx != 0xffff)
 597                         ctrl_out(gspca_dev, 0x40, 1, tbl[n].val, tbl[n].idx,
 598                                         0, NULL);
 599                 else if (tbl[n].val == 0xffff)
 600                         break;
 601                 else
 602                         msleep(tbl[n].val);
 603         }
 604         return n;
 605 }
 606
 607 void fetch_idxdata(struct gspca_dev *gspca_dev, struct idxdata *tbl, int len)
 608 {
 609         int n;
 610
 611         for (n = 0; n < len; n++) {
 612                 if (memcmp(tbl[n].data, "\xff\xff\xff", 3) != 0)
 613                         ctrl_out(gspca_dev, 0x40, 3, 0x7a00, tbl[n].idx,
 614                                         3, tbl[n].data);
 615                 else
 616                         msleep(tbl[n].idx);
 617         }
 618 }
 619
 620 static int gl860_guess_sensor(struct gspca_dev *gspca_dev,
 621                                 u16 vendor_id, u16 product_id)
 622 {
 623         struct sd *sd = (struct sd *) gspca_dev;
 624         u8 probe, nb26, nb96, nOV, ntry;
 625
 626         if (product_id == 0xf191)
 627                 sd->sensor = ID_MI1320;
 628
 629         if (sd->sensor == 0xff) {
 630                 ctrl_in(gspca_dev, 0xc0, 2, 0x0000, 0x0004, 1, &probe);
 631                 ctrl_in(gspca_dev, 0xc0, 2, 0x0000, 0x0004, 1, &probe);
 632
 633                 ctrl_out(gspca_dev, 0x40, 1, 0x0000, 0x0000, 0, NULL);
 634                 msleep(3);
 635                 ctrl_out(gspca_dev, 0x40, 1, 0x0010, 0x0010, 0, NULL);
 636                 msleep(3);
 637                 ctrl_out(gspca_dev, 0x40, 1, 0x0008, 0x00c0, 0, NULL);
 638                 msleep(3);
 639                 ctrl_out(gspca_dev, 0x40, 1, 0x0001, 0x00c1, 0, NULL);
 640                 msleep(3);
 641                 ctrl_out(gspca_dev, 0x40, 1, 0x0001, 0x00c2, 0, NULL);
 642                 msleep(3);
 643                 ctrl_out(gspca_dev, 0x40, 1, 0x0020, 0x0006, 0, NULL);
 644                 msleep(3);
 645                 ctrl_out(gspca_dev, 0x40, 1, 0x006a, 0x000d, 0, NULL);
 646                 msleep(56);
 647
 648                 PDEBUG(D_PROBE, "probing for sensor MI2020 or OVXXXX");
 649                 nOV = 0;
 650                 for (ntry = 0; ntry < 4; ntry++) {
 651                         ctrl_out(gspca_dev, 0x40, 1, 0x0040, 0x0000, 0, NULL);
 652                         msleep(3);
 653                         ctrl_out(gspca_dev, 0x40, 1, 0x0063, 0x0006, 0, NULL);
 654                         msleep(3);
 655                         ctrl_out(gspca_dev, 0x40, 1, 0x7a00, 0x8030, 0, NULL);
 656                         msleep(10);
 657                         ctrl_in(gspca_dev, 0xc0, 2, 0x7a00, 0x8030, 1, &probe);
 658                         PDEBUG(D_PROBE, "probe=0x%02x", probe);
 659                         if (probe == 0xff)
 660                                 nOV++;
 661                 }
 662
 663                 if (nOV) {
 664                         PDEBUG(D_PROBE, "0xff -> OVXXXX");
 665                         PDEBUG(D_PROBE, "probing for sensor OV2640 or OV9655");
 666
 667                         nb26 = nb96 = 0;
 668                         for (ntry = 0; ntry < 4; ntry++) {
 669                                 ctrl_out(gspca_dev, 0x40, 1, 0x0040, 0x0000,
 670                                                 0, NULL);
 671                                 msleep(3);
 672                                 ctrl_out(gspca_dev, 0x40, 1, 0x6000, 0x800a,
 673                                                 0, NULL);
 674                                 msleep(10);
 675
 676                                 /* Wait for 26(OV2640) or 96(OV9655) */
 677                                 ctrl_in(gspca_dev, 0xc0, 2, 0x6000, 0x800a,
 678                                                 1, &probe);
 679
 680                                 if (probe == 0x26 || probe == 0x40) {
 681                                         PDEBUG(D_PROBE,
 682                                                 "probe=0x%02x -> OV2640",
 683                                                 probe);
 684                                         sd->sensor = ID_OV2640;
 685                                         nb26 += 4;
 686                                         break;
 687                                 }
 688                                 if (probe == 0x96 || probe == 0x55) {
 689                                         PDEBUG(D_PROBE,
 690                                                 "probe=0x%02x -> OV9655",
 691                                                 probe);
 692                                         sd->sensor = ID_OV9655;
 693                                         nb96 += 4;
 694                                         break;
 695                                 }
 696                                 PDEBUG(D_PROBE, "probe=0x%02x", probe);
 697                                 if (probe == 0x00)
 698                                         nb26++;
 699                                 if (probe == 0xff)
 700                                         nb96++;
 701                                 msleep(3);
 702                         }
 703                         if (nb26 < 4 && nb96 < 4)
 704                                 return -1;
 705                 } else {
 706                         PDEBUG(D_PROBE, "Not any 0xff -> MI2020");
 707                         sd->sensor = ID_MI2020;
 708                 }
 709         }
 710
 711         if (_MI1320_) {
 712                 PDEBUG(D_PROBE, "05e3:f191 sensor MI1320 (1.3M)");
 713         } else if (_MI2020_) {
 714                 PDEBUG(D_PROBE, "05e3:0503 sensor MI2020 (2.0M)");
 715         } else if (_OV9655_) {
 716                 PDEBUG(D_PROBE, "05e3:0503 sensor OV9655 (1.3M)");
 717         } else if (_OV2640_) {
 718                 PDEBUG(D_PROBE, "05e3:0503 sensor OV2640 (2.0M)");
 719         } else {
 720                 PDEBUG(D_PROBE, "***** Unknown sensor *****");
 721                 return -1;
 722         }
 723
 724         return 0;
 725 }