drivers/media/video/se401.c

   1 /*
   2  * Endpoints (formerly known as AOX) se401 USB Camera Driver
   3  *
   4  * Copyright (c) 2000 Jeroen B. Vreeken (pe1rxq@amsat.org)
   5  *
   6  * Still somewhat based on the Linux ov511 driver.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the
  10  * Free Software Foundation; either version 2 of the License, or (at your
  11  * option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  15  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16  * for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software Foundation,
  20  * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  *
  22  *
  23  * Thanks to Endpoints Inc. (www.endpoints.com) for making documentation on
  24  * their chipset available and supporting me while writing this driver.
  25  *      - Jeroen Vreeken
  26  */
  27
  28 static const char version[] = "0.24";
  29
  30 #include <linux/module.h>
  31 #include <linux/init.h>
  32 #include <linux/vmalloc.h>
  33 #include <linux/slab.h>
  34 #include <linux/pagemap.h>
  35 #include <linux/usb.h>
  36 #include "se401.h"
  37
  38 static int flickerless=0;
  39 static int video_nr = -1;
  40
  41 static struct usb_device_id device_table [] = {
  42         { USB_DEVICE(0x03e8, 0x0004) },/* Endpoints/Aox SE401 */
  43         { USB_DEVICE(0x0471, 0x030b) },/* Philips PCVC665K */
  44         { USB_DEVICE(0x047d, 0x5001) },/* Kensington 67014 */
  45         { USB_DEVICE(0x047d, 0x5002) },/* Kensington 6701(5/7) */
  46         { USB_DEVICE(0x047d, 0x5003) },/* Kensington 67016 */
  47         { }
  48 };
  49
  50 MODULE_DEVICE_TABLE(usb, device_table);
  51
  52 MODULE_AUTHOR("Jeroen Vreeken <pe1rxq@amsat.org>");
  53 MODULE_DESCRIPTION("SE401 USB Camera Driver");
  54 MODULE_LICENSE("GPL");
  55 module_param(flickerless, int, 0);
  56 MODULE_PARM_DESC(flickerless, "Net frequency to adjust exposure time to (0/50/60)");
  57 module_param(video_nr, int, 0);
  58
  59 static struct usb_driver se401_driver;
  60
  61
  62 /**********************************************************************
  63  *
  64  * Memory management
  65  *
  66  **********************************************************************/
  67 static void *rvmalloc(unsigned long size)
  68 {
  69         void *mem;
  70         unsigned long adr;
  71
  72         size = PAGE_ALIGN(size);
  73         mem = vmalloc_32(size);
  74         if (!mem)
  75                 return NULL;
  76
  77         memset(mem, 0, size); /* Clear the ram out, no junk to the user */
  78         adr = (unsigned long) mem;
  79         while (size > 0) {
  80                 SetPageReserved(vmalloc_to_page((void *)adr));
  81                 adr += PAGE_SIZE;
  82                 size -= PAGE_SIZE;
  83         }
  84
  85         return mem;
  86 }
  87
  88 static void rvfree(void *mem, unsigned long size)
  89 {
  90         unsigned long adr;
  91
  92         if (!mem)
  93                 return;
  94
  95         adr = (unsigned long) mem;
  96         while ((long) size > 0) {
  97                 ClearPageReserved(vmalloc_to_page((void *)adr));
  98                 adr += PAGE_SIZE;
  99                 size -= PAGE_SIZE;
 100         }
 101         vfree(mem);
 102 }
 103
 104
 105
 106 /****************************************************************************
 107  *
 108  * se401 register read/write functions
 109  *
 110  ***************************************************************************/
 111
 112 static int se401_sndctrl(int set, struct usb_se401 *se401, unsigned short req,
 113                          unsigned short value, unsigned char *cp, int size)
 114 {
 115         return usb_control_msg (
 116                 se401->dev,
 117                 set ? usb_sndctrlpipe(se401->dev, 0) : usb_rcvctrlpipe(se401->dev, 0),
 118                 req,
 119                 (set ? USB_DIR_OUT : USB_DIR_IN) | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 120                 value,
 121                 0,
 122                 cp,
 123                 size,
 124                 1000
 125         );
 126 }
 127
 128 static int se401_set_feature(struct usb_se401 *se401, unsigned short selector,
 129                              unsigned short param)
 130 {
 131         /* specs say that the selector (address) should go in the value field
 132            and the param in index, but in the logs of the windows driver they do
 133            this the other way around...
 134          */
 135         return usb_control_msg (
 136                 se401->dev,
 137                 usb_sndctrlpipe(se401->dev, 0),
 138                 SE401_REQ_SET_EXT_FEATURE,
 139                 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 140                 param,
 141                 selector,
 142                 NULL,
 143                 0,
 144                 1000
 145         );
 146 }
 147
 148 static unsigned short se401_get_feature(struct usb_se401 *se401,
 149                                         unsigned short selector)
 150 {
 151         /* For 'set' the selecetor should be in index, not sure if the spec is
 152            wrong here to....
 153          */
 154         unsigned char cp[2];
 155         usb_control_msg (
 156                 se401->dev,
 157                 usb_rcvctrlpipe(se401->dev, 0),
 158                 SE401_REQ_GET_EXT_FEATURE,
 159                 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 160                 0,
 161                 selector,
 162                 cp,
 163                 2,
 164                 1000
 165         );
 166         return cp[0]+cp[1]*256;
 167 }
 168
 169 /****************************************************************************
 170  *
 171  * Camera control
 172  *
 173  ***************************************************************************/
 174
 175
 176 static int se401_send_pict(struct usb_se401 *se401)
 177 {
 178         se401_set_feature(se401, HV7131_REG_TITL, se401->expose_l);/* integration time low */
 179         se401_set_feature(se401, HV7131_REG_TITM, se401->expose_m);/* integration time mid */
 180         se401_set_feature(se401, HV7131_REG_TITU, se401->expose_h);/* integration time mid */
 181         se401_set_feature(se401, HV7131_REG_ARLV, se401->resetlevel);/* reset level value */
 182         se401_set_feature(se401, HV7131_REG_ARCG, se401->rgain);/* red color gain */
 183         se401_set_feature(se401, HV7131_REG_AGCG, se401->ggain);/* green color gain */
 184         se401_set_feature(se401, HV7131_REG_ABCG, se401->bgain);/* blue color gain */
 185
 186         return 0;
 187 }
 188
 189 static void se401_set_exposure(struct usb_se401 *se401, int brightness)
 190 {
 191         int integration=brightness<<5;
 192
 193         if (flickerless==50) {
 194                 integration=integration-integration%106667;
 195         }
 196         if (flickerless==60) {
 197                 integration=integration-integration%88889;
 198         }
 199         se401->brightness=integration>>5;
 200         se401->expose_h=(integration>>16)&0xff;
 201         se401->expose_m=(integration>>8)&0xff;
 202         se401->expose_l=integration&0xff;
 203 }
 204
 205 static int se401_get_pict(struct usb_se401 *se401, struct video_picture *p)
 206 {
 207         p->brightness=se401->brightness;
 208         if (se401->enhance) {
 209                 p->whiteness=32768;
 210         } else {
 211                 p->whiteness=0;
 212         }
 213         p->colour=65535;
 214         p->contrast=65535;
 215         p->hue=se401->rgain<<10;
 216         p->palette=se401->palette;
 217         p->depth=3; /* rgb24 */
 218         return 0;
 219 }
 220
 221
 222 static int se401_set_pict(struct usb_se401 *se401, struct video_picture *p)
 223 {
 224         if (p->palette != VIDEO_PALETTE_RGB24)
 225                 return 1;
 226         se401->palette=p->palette;
 227         if (p->hue!=se401->hue) {
 228                 se401->rgain= p->hue>>10;
 229                 se401->bgain= 0x40-(p->hue>>10);
 230                 se401->hue=p->hue;
 231         }
 232         if (p->brightness!=se401->brightness) {
 233                 se401_set_exposure(se401, p->brightness);
 234         }
 235         if (p->whiteness>=32768) {
 236                 se401->enhance=1;
 237         } else {
 238                 se401->enhance=0;
 239         }
 240         se401_send_pict(se401);
 241         se401_send_pict(se401);
 242         return 0;
 243 }
 244
 245 /*
 246         Hyundai have some really nice docs about this and other sensor related
 247         stuff on their homepage: www.hei.co.kr
 248 */
 249 static void se401_auto_resetlevel(struct usb_se401 *se401)
 250 {
 251         unsigned int ahrc, alrc;
 252         int oldreset=se401->resetlevel;
 253
 254         /* For some reason this normally read-only register doesn't get reset
 255            to zero after reading them just once...
 256          */
 257         se401_get_feature(se401, HV7131_REG_HIREFNOH);
 258         se401_get_feature(se401, HV7131_REG_HIREFNOL);
 259         se401_get_feature(se401, HV7131_REG_LOREFNOH);
 260         se401_get_feature(se401, HV7131_REG_LOREFNOL);
 261         ahrc=256*se401_get_feature(se401, HV7131_REG_HIREFNOH) +
 262             se401_get_feature(se401, HV7131_REG_HIREFNOL);
 263         alrc=256*se401_get_feature(se401, HV7131_REG_LOREFNOH) +
 264             se401_get_feature(se401, HV7131_REG_LOREFNOL);
 265
 266         /* Not an exact science, but it seems to work pretty well... */
 267         if (alrc > 10) {
 268                 while (alrc>=10 && se401->resetlevel < 63) {
 269                         se401->resetlevel++;
 270                         alrc /=2;
 271                 }
 272         } else if (ahrc > 20) {
 273                 while (ahrc>=20 && se401->resetlevel > 0) {
 274                         se401->resetlevel--;
 275                         ahrc /=2;
 276                 }
 277         }
 278         if (se401->resetlevel!=oldreset)
 279                 se401_set_feature(se401, HV7131_REG_ARLV, se401->resetlevel);
 280
 281         return;
 282 }
 283
 284 /* irq handler for snapshot button */
 285 static void se401_button_irq(struct urb *urb)
 286 {
 287         struct usb_se401 *se401 = urb->context;
 288         int status;
 289
 290         if (!se401->dev) {
 291                 info("ohoh: device vapourished");
 292                 return;
 293         }
 294
 295         switch (urb->status) {
 296         case 0:
 297                 /* success */
 298                 break;
 299         case -ECONNRESET:
 300         case -ENOENT:
 301         case -ESHUTDOWN:
 302                 /* this urb is terminated, clean up */
 303                 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
 304                 return;
 305         default:
 306                 dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
 307                 goto exit;
 308         }
 309
 310         if (urb->actual_length >=2) {
 311                 if (se401->button)
 312                         se401->buttonpressed=1;
 313         }
 314 exit:
 315         status = usb_submit_urb (urb, GFP_ATOMIC);
 316         if (status)
 317                 err ("%s - usb_submit_urb failed with result %d",
 318                      __FUNCTION__, status);
 319 }
 320
 321 static void se401_video_irq(struct urb *urb)
 322 {
 323         struct usb_se401 *se401 = urb->context;
 324         int length = urb->actual_length;
 325
 326         /* ohoh... */
 327         if (!se401->streaming)
 328                 return;
 329
 330         if (!se401->dev) {
 331                 info ("ohoh: device vapourished");
 332                 return;
 333         }
 334
 335         /* 0 sized packets happen if we are to fast, but sometimes the camera
 336            keeps sending them forever...
 337          */
 338         if (length && !urb->status) {
 339                 se401->nullpackets=0;
 340                 switch(se401->scratch[se401->scratch_next].state) {
 341                         case BUFFER_READY:
 342                         case BUFFER_BUSY: {
 343                                 se401->dropped++;
 344                                 break;
 345                         }
 346                         case BUFFER_UNUSED: {
 347                                 memcpy(se401->scratch[se401->scratch_next].data, (unsigned char *)urb->transfer_buffer, length);
 348                                 se401->scratch[se401->scratch_next].state=BUFFER_READY;
 349                                 se401->scratch[se401->scratch_next].offset=se401->bayeroffset;
 350                                 se401->scratch[se401->scratch_next].length=length;
 351                                 if (waitqueue_active(&se401->wq)) {
 352                                         wake_up_interruptible(&se401->wq);
 353                                 }
 354                                 se401->scratch_overflow=0;
 355                                 se401->scratch_next++;
 356                                 if (se401->scratch_next>=SE401_NUMSCRATCH)
 357                                         se401->scratch_next=0;
 358                                 break;
 359                         }
 360                 }
 361                 se401->bayeroffset+=length;
 362                 if (se401->bayeroffset>=se401->cheight*se401->cwidth) {
 363                         se401->bayeroffset=0;
 364                 }
 365         } else {
 366                 se401->nullpackets++;
 367                 if (se401->nullpackets > SE401_MAX_NULLPACKETS) {
 368                         if (waitqueue_active(&se401->wq)) {
 369                                 wake_up_interruptible(&se401->wq);
 370                         }
 371                 }
 372         }
 373
 374         /* Resubmit urb for new data */
 375         urb->status=0;
 376         urb->dev=se401->dev;
 377         if(usb_submit_urb(urb, GFP_KERNEL))
 378                 info("urb burned down");
 379         return;
 380 }
 381
 382 static void se401_send_size(struct usb_se401 *se401, int width, int height)
 383 {
 384         int i=0;
 385         int mode=0x03; /* No compression */
 386         int sendheight=height;
 387         int sendwidth=width;
 388
 389         /* JangGu compression can only be used with the camera supported sizes,
 390            but bayer seems to work with any size that fits on the sensor.
 391            We check if we can use compression with the current size with either
 392            4 or 16 times subcapturing, if not we use uncompressed bayer data
 393            but this will result in cutouts of the maximum size....
 394          */
 395         while (i<se401->sizes && !(se401->width[i]==width && se401->height[i]==height))
 396                 i++;
 397         while (i<se401->sizes) {
 398                 if (se401->width[i]==width*2 && se401->height[i]==height*2) {
 399                         sendheight=se401->height[i];
 400                         sendwidth=se401->width[i];
 401                         mode=0x40;
 402                 }
 403                 if (se401->width[i]==width*4 && se401->height[i]==height*4) {
 404                         sendheight=se401->height[i];
 405                         sendwidth=se401->width[i];
 406                         mode=0x42;
 407                 }
 408                 i++;
 409         }
 410
 411         se401_sndctrl(1, se401, SE401_REQ_SET_WIDTH, sendwidth, NULL, 0);
 412         se401_sndctrl(1, se401, SE401_REQ_SET_HEIGHT, sendheight, NULL, 0);
 413         se401_set_feature(se401, SE401_OPERATINGMODE, mode);
 414
 415         if (mode==0x03) {
 416                 se401->format=FMT_BAYER;
 417         } else {
 418                 se401->format=FMT_JANGGU;
 419         }
 420
 421         return;
 422 }
 423
 424 /*
 425         In this function se401_send_pict is called several times,
 426         for some reason (depending on the state of the sensor and the phase of
 427         the moon :) doing this only in either place doesn't always work...
 428 */
 429 static int se401_start_stream(struct usb_se401 *se401)
 430 {
 431         struct urb *urb;
 432         int err=0, i;
 433         se401->streaming=1;
 434
 435         se401_sndctrl(1, se401, SE401_REQ_CAMERA_POWER, 1, NULL, 0);
 436         se401_sndctrl(1, se401, SE401_REQ_LED_CONTROL, 1, NULL, 0);
 437
 438         /* Set picture settings */
 439         se401_set_feature(se401, HV7131_REG_MODE_B, 0x05);/*windowed + pix intg */
 440         se401_send_pict(se401);
 441
 442         se401_send_size(se401, se401->cwidth, se401->cheight);
 443
 444         se401_sndctrl(1, se401, SE401_REQ_START_CONTINUOUS_CAPTURE, 0, NULL, 0);
 445
 446         /* Do some memory allocation */
 447         for (i=0; i<SE401_NUMFRAMES; i++) {
 448                 se401->frame[i].data=se401->fbuf + i * se401->maxframesize;
 449                 se401->frame[i].curpix=0;
 450         }
 451         for (i=0; i<SE401_NUMSBUF; i++) {
 452                 se401->sbuf[i].data=kmalloc(SE401_PACKETSIZE, GFP_KERNEL);
 453         }
 454
 455         se401->bayeroffset=0;
 456         se401->scratch_next=0;
 457         se401->scratch_use=0;
 458         se401->scratch_overflow=0;
 459         for (i=0; i<SE401_NUMSCRATCH; i++) {
 460                 se401->scratch[i].data=kmalloc(SE401_PACKETSIZE, GFP_KERNEL);
 461                 se401->scratch[i].state=BUFFER_UNUSED;
 462         }
 463
 464         for (i=0; i<SE401_NUMSBUF; i++) {
 465                 urb=usb_alloc_urb(0, GFP_KERNEL);
 466                 if(!urb)
 467                         return -ENOMEM;
 468
 469                 usb_fill_bulk_urb(urb, se401->dev,
 470                         usb_rcvbulkpipe(se401->dev, SE401_VIDEO_ENDPOINT),
 471                         se401->sbuf[i].data, SE401_PACKETSIZE,
 472                         se401_video_irq,
 473                         se401);
 474
 475                 se401->urb[i]=urb;
 476
 477                 err=usb_submit_urb(se401->urb[i], GFP_KERNEL);
 478                 if(err)
 479                         err("urb burned down");
 480         }
 481
 482         se401->framecount=0;
 483
 484         return 0;
 485 }
 486
 487 static int se401_stop_stream(struct usb_se401 *se401)
 488 {
 489         int i;
 490
 491         if (!se401->streaming || !se401->dev)
 492                 return 1;
 493
 494         se401->streaming=0;
 495
 496         se401_sndctrl(1, se401, SE401_REQ_STOP_CONTINUOUS_CAPTURE, 0, NULL, 0);
 497
 498         se401_sndctrl(1, se401, SE401_REQ_LED_CONTROL, 0, NULL, 0);
 499         se401_sndctrl(1, se401, SE401_REQ_CAMERA_POWER, 0, NULL, 0);
 500
 501         for (i=0; i<SE401_NUMSBUF; i++) if (se401->urb[i]) {
 502                 usb_kill_urb(se401->urb[i]);
 503                 usb_free_urb(se401->urb[i]);
 504                 se401->urb[i]=NULL;
 505                 kfree(se401->sbuf[i].data);
 506         }
 507         for (i=0; i<SE401_NUMSCRATCH; i++) {
 508                 kfree(se401->scratch[i].data);
 509                 se401->scratch[i].data=NULL;
 510         }
 511
 512         return 0;
 513 }
 514
 515 static int se401_set_size(struct usb_se401 *se401, int width, int height)
 516 {
 517         int wasstreaming=se401->streaming;
 518         /* Check to see if we need to change */
 519         if (se401->cwidth==width && se401->cheight==height)
 520                 return 0;
 521
 522         /* Check for a valid mode */
 523         if (!width || !height)
 524                 return 1;
 525         if ((width & 1) || (height & 1))
 526                 return 1;
 527         if (width>se401->width[se401->sizes-1])
 528                 return 1;
 529         if (height>se401->height[se401->sizes-1])
 530                 return 1;
 531
 532         /* Stop a current stream and start it again at the new size */
 533         if (wasstreaming)
 534                 se401_stop_stream(se401);
 535         se401->cwidth=width;
 536         se401->cheight=height;
 537         if (wasstreaming)
 538                 se401_start_stream(se401);
 539         return 0;
 540 }
 541
 542
 543 /****************************************************************************
 544  *
 545  * Video Decoding
 546  *
 547  ***************************************************************************/
 548
 549 /*
 550         This shouldn't really be done in a v4l driver....
 551         But it does make the image look a lot more usable.
 552         Basically it lifts the dark pixels more than the light pixels.
 553 */
 554 static inline void enhance_picture(unsigned char *frame, int len)
 555 {
 556         while (len--) {
 557                 *frame=(((*frame^255)*(*frame^255))/255)^255;
 558                 frame++;
 559         }
 560 }
 561
 562 static inline void decode_JangGu_integrate(struct usb_se401 *se401, int data)
 563 {
 564         struct se401_frame *frame=&se401->frame[se401->curframe];
 565         int linelength=se401->cwidth*3;
 566
 567         if (frame->curlinepix >= linelength) {
 568                 frame->curlinepix=0;
 569                 frame->curline+=linelength;
 570         }
 571
 572         /* First three are absolute, all others relative.
 573          * Format is rgb from right to left (mirrorred image),
 574          * we flip it to get bgr from left to right. */
 575         if (frame->curlinepix < 3) {
 576                 *(frame->curline-frame->curlinepix)=1+data*4;
 577         } else {
 578                 *(frame->curline-frame->curlinepix)=
 579                     *(frame->curline-frame->curlinepix+3)+data*4;
 580         }
 581         frame->curlinepix++;
 582 }
 583
 584 static inline void decode_JangGu_vlc (struct usb_se401 *se401, unsigned char *data, int bit_exp, int packetlength)
 585 {
 586         int pos=0;
 587         int vlc_cod=0;
 588         int vlc_size=0;
 589         int vlc_data=0;
 590         int bit_cur;
 591         int bit;
 592         data+=4;
 593         while (pos < packetlength) {
 594                 bit_cur=8;
 595                 while (bit_cur && bit_exp) {
 596                         bit=((*data)>>(bit_cur-1))&1;
 597                         if (!vlc_cod) {
 598                                 if (bit) {
 599                                         vlc_size++;
 600                                 } else {
 601                                         if (!vlc_size) {
 602                                                 decode_JangGu_integrate(se401, 0);
 603                                         } else {
 604                                                 vlc_cod=2;
 605                                                 vlc_data=0;
 606                                         }
 607                                 }
 608                         } else {
 609                                 if (vlc_cod==2) {
 610                                         if (!bit)
 611                                                 vlc_data =  -(1<<vlc_size) + 1;
 612                                         vlc_cod--;
 613                                 }
 614                                 vlc_size--;
 615                                 vlc_data+=bit<<vlc_size;
 616                                 if (!vlc_size) {
 617                                         decode_JangGu_integrate(se401, vlc_data);
 618                                         vlc_cod=0;
 619                                 }
 620                         }
 621                         bit_cur--;
 622                         bit_exp--;
 623                 }
 624                 pos++;
 625                 data++;
 626         }
 627 }
 628
 629 static inline void decode_JangGu (struct usb_se401 *se401, struct se401_scratch *buffer)
 630 {
 631         unsigned char *data=buffer->data;
 632         int len=buffer->length;
 633         int bit_exp=0, pix_exp=0, frameinfo=0, packetlength=0, size;
 634         int datapos=0;
 635
 636         /* New image? */
 637         if (!se401->frame[se401->curframe].curpix) {
 638                 se401->frame[se401->curframe].curlinepix=0;
 639                 se401->frame[se401->curframe].curline=
 640                     se401->frame[se401->curframe].data+
 641                     se401->cwidth*3-1;
 642                 if (se401->frame[se401->curframe].grabstate==FRAME_READY)
 643                         se401->frame[se401->curframe].grabstate=FRAME_GRABBING;
 644                 se401->vlcdatapos=0;
 645         }
 646         while (datapos < len) {
 647                 size=1024-se401->vlcdatapos;
 648                 if (size+datapos > len)
 649                         size=len-datapos;
 650                 memcpy(se401->vlcdata+se401->vlcdatapos, data+datapos, size);
 651                 se401->vlcdatapos+=size;
 652                 packetlength=0;
 653                 if (se401->vlcdatapos >= 4) {
 654                         bit_exp=se401->vlcdata[3]+(se401->vlcdata[2]<<8);
 655                         pix_exp=se401->vlcdata[1]+((se401->vlcdata[0]&0x3f)<<8);
 656                         frameinfo=se401->vlcdata[0]&0xc0;
 657                         packetlength=((bit_exp+47)>>4)<<1;
 658                         if (packetlength > 1024) {
 659                                 se401->vlcdatapos=0;
 660                                 datapos=len;
 661                                 packetlength=0;
 662                                 se401->error++;
 663                                 se401->frame[se401->curframe].curpix=0;
 664                         }
 665                 }
 666                 if (packetlength && se401->vlcdatapos >= packetlength) {
 667                         decode_JangGu_vlc(se401, se401->vlcdata, bit_exp, packetlength);
 668                         se401->frame[se401->curframe].curpix+=pix_exp*3;
 669                         datapos+=size-(se401->vlcdatapos-packetlength);
 670                         se401->vlcdatapos=0;
 671                         if (se401->frame[se401->curframe].curpix>=se401->cwidth*se401->cheight*3) {
 672                                 if (se401->frame[se401->curframe].curpix==se401->cwidth*se401->cheight*3) {
 673                                         if (se401->frame[se401->curframe].grabstate==FRAME_GRABBING) {
 674                                                 se401->frame[se401->curframe].grabstate=FRAME_DONE;
 675                                                 se401->framecount++;
 676                                                 se401->readcount++;
 677                                         }
 678                                         if (se401->frame[(se401->curframe+1)&(SE401_NUMFRAMES-1)].grabstate==FRAME_READY) {
 679                                                 se401->curframe=(se401->curframe+1) & (SE401_NUMFRAMES-1);
 680                                         }
 681                                 } else {
 682                                         se401->error++;
 683                                 }
 684                                 se401->frame[se401->curframe].curpix=0;
 685                                 datapos=len;
 686                         }
 687                 } else {
 688                         datapos+=size;
 689                 }
 690         }
 691 }
 692
 693 static inline void decode_bayer (struct usb_se401 *se401, struct se401_scratch *buffer)
 694 {
 695         unsigned char *data=buffer->data;
 696         int len=buffer->length;
 697         int offset=buffer->offset;
 698         int datasize=se401->cwidth*se401->cheight;
 699         struct se401_frame *frame=&se401->frame[se401->curframe];
 700
 701         unsigned char *framedata=frame->data, *curline, *nextline;
 702         int width=se401->cwidth;
 703         int blineoffset=0, bline;
 704         int linelength=width*3, i;
 705
 706
 707         if (frame->curpix==0) {
 708                 if (frame->grabstate==FRAME_READY) {
 709                         frame->grabstate=FRAME_GRABBING;
 710                 }
 711                 frame->curline=framedata+linelength;
 712                 frame->curlinepix=0;
 713         }
 714
 715         if (offset!=frame->curpix) {
 716                 /* Regard frame as lost :( */
 717                 frame->curpix=0;
 718                 se401->error++;
 719                 return;
 720         }
 721
 722         /* Check if we have to much data */
 723         if (frame->curpix+len > datasize) {
 724                 len=datasize-frame->curpix;
 725         }
 726         if (se401->cheight%4)
 727                 blineoffset=1;
 728         bline=frame->curpix/se401->cwidth+blineoffset;
 729
 730         curline=frame->curline;
 731         nextline=curline+linelength;
 732         if (nextline >= framedata+datasize*3)
 733                 nextline=curline;
 734         while (len) {
 735                 if (frame->curlinepix>=width) {
 736                         frame->curlinepix-=width;
 737                         bline=frame->curpix/width+blineoffset;
 738                         curline+=linelength*2;
 739                         nextline+=linelength*2;
 740                         if (curline >= framedata+datasize*3) {
 741                                 frame->curlinepix++;
 742                                 curline-=3;
 743                                 nextline-=3;
 744                                 len--;
 745                                 data++;
 746                                 frame->curpix++;
 747                         }
 748                         if (nextline >= framedata+datasize*3)
 749                                 nextline=curline;
 750                 }
 751                 if ((bline&1)) {
 752                         if ((frame->curlinepix&1)) {
 753                                 *(curline+2)=*data;
 754                                 *(curline-1)=*data;
 755                                 *(nextline+2)=*data;
 756                                 *(nextline-1)=*data;
 757                         } else {
 758                                 *(curline+1)=
 759                                         (*(curline+1)+*data)/2;
 760                                 *(curline-2)=
 761                                         (*(curline-2)+*data)/2;
 762                                 *(nextline+1)=*data;
 763                                 *(nextline-2)=*data;
 764                         }
 765                 } else {
 766                         if ((frame->curlinepix&1)) {
 767                                 *(curline+1)=
 768                                         (*(curline+1)+*data)/2;
 769                                 *(curline-2)=
 770                                         (*(curline-2)+*data)/2;
 771                                 *(nextline+1)=*data;
 772                                 *(nextline-2)=*data;
 773                         } else {
 774                                 *curline=*data;
 775                                 *(curline-3)=*data;
 776                                 *nextline=*data;
 777                                 *(nextline-3)=*data;
 778                         }
 779                 }
 780                 frame->curlinepix++;
 781                 curline-=3;
 782                 nextline-=3;
 783                 len--;
 784                 data++;
 785                 frame->curpix++;
 786         }
 787         frame->curline=curline;
 788
 789         if (frame->curpix>=datasize) {
 790                 /* Fix the top line */
 791                 framedata+=linelength;
 792                 for (i=0; i<linelength; i++) {
 793                         framedata--;
 794                         *framedata=*(framedata+linelength);
 795                 }
 796                 /* Fix the left side (green is already present) */
 797                 for (i=0; i<se401->cheight; i++) {
 798                         *framedata=*(framedata+3);
 799                         *(framedata+1)=*(framedata+4);
 800                         *(framedata+2)=*(framedata+5);
 801                         framedata+=linelength;
 802                 }
 803                 frame->curpix=0;
 804                 frame->grabstate=FRAME_DONE;
 805                 se401->framecount++;
 806                 se401->readcount++;
 807                 if (se401->frame[(se401->curframe+1)&(SE401_NUMFRAMES-1)].grabstate==FRAME_READY) {
 808                         se401->curframe=(se401->curframe+1) & (SE401_NUMFRAMES-1);
 809                 }
 810         }
 811 }
 812
 813 static int se401_newframe(struct usb_se401 *se401, int framenr)
 814 {
 815         DECLARE_WAITQUEUE(wait, current);
 816         int errors=0;
 817
 818         while (se401->streaming &&
 819             (se401->frame[framenr].grabstate==FRAME_READY ||
 820              se401->frame[framenr].grabstate==FRAME_GRABBING) ) {
 821                 if(!se401->frame[framenr].curpix) {
 822                         errors++;
 823                 }
 824                 wait_interruptible(
 825                     se401->scratch[se401->scratch_use].state!=BUFFER_READY,
 826                     &se401->wq,
 827                     &wait
 828                 );
 829                 if (se401->nullpackets > SE401_MAX_NULLPACKETS) {
 830                         se401->nullpackets=0;
 831                         info("to many null length packets, restarting capture");
 832                         se401_stop_stream(se401);
 833                         se401_start_stream(se401);
 834                 } else {
 835                         if (se401->scratch[se401->scratch_use].state!=BUFFER_READY) {
 836                                 se401->frame[framenr].grabstate=FRAME_ERROR;
 837                                 return -EIO;
 838                         }
 839                         se401->scratch[se401->scratch_use].state=BUFFER_BUSY;
 840                         if (se401->format==FMT_JANGGU) {
 841                                 decode_JangGu(se401, &se401->scratch[se401->scratch_use]);
 842                         } else {
 843                                 decode_bayer(se401, &se401->scratch[se401->scratch_use]);
 844                         }
 845                         se401->scratch[se401->scratch_use].state=BUFFER_UNUSED;
 846                         se401->scratch_use++;
 847                         if (se401->scratch_use>=SE401_NUMSCRATCH)
 848                                 se401->scratch_use=0;
 849                         if (errors > SE401_MAX_ERRORS) {
 850                                 errors=0;
 851                                 info("to much errors, restarting capture");
 852                                 se401_stop_stream(se401);
 853                                 se401_start_stream(se401);
 854                         }
 855                 }
 856         }
 857
 858         if (se401->frame[framenr].grabstate==FRAME_DONE)
 859                 if (se401->enhance)
 860                         enhance_picture(se401->frame[framenr].data, se401->cheight*se401->cwidth*3);
 861         return 0;
 862 }
 863
 864 static void usb_se401_remove_disconnected (struct usb_se401 *se401)
 865 {
 866         int i;
 867
 868         se401->dev = NULL;
 869
 870         for (i=0; i<SE401_NUMSBUF; i++)
 871                 if (se401->urb[i]) {
 872                         usb_kill_urb(se401->urb[i]);
 873                         usb_free_urb(se401->urb[i]);
 874                         se401->urb[i] = NULL;
 875                         kfree(se401->sbuf[i].data);
 876                 }
 877         for (i=0; i<SE401_NUMSCRATCH; i++) {
 878                 kfree(se401->scratch[i].data);
 879         }
 880         if (se401->inturb) {
 881                 usb_kill_urb(se401->inturb);
 882                 usb_free_urb(se401->inturb);
 883         }
 884         info("%s disconnected", se401->camera_name);
 885
 886         /* Free the memory */
 887         kfree(se401->width);
 888         kfree(se401->height);
 889         kfree(se401);
 890 }
 891
 892
 893
 894 /****************************************************************************
 895  *
 896  * Video4Linux
 897  *
 898  ***************************************************************************/
 899
 900
 901 static int se401_open(struct inode *inode, struct file *file)
 902 {
 903         struct video_device *dev = video_devdata(file);
 904         struct usb_se401 *se401 = (struct usb_se401 *)dev;
 905         int err = 0;
 906
 907         if (se401->user)
 908                 return -EBUSY;
 909         se401->fbuf = rvmalloc(se401->maxframesize * SE401_NUMFRAMES);
 910         if (se401->fbuf)
 911                 file->private_data = dev;
 912         else
 913                 err = -ENOMEM;
 914         se401->user = !err;
 915
 916         return err;
 917 }
 918
 919 static int se401_close(struct inode *inode, struct file *file)
 920 {
 921         struct video_device *dev = file->private_data;
 922         struct usb_se401 *se401 = (struct usb_se401 *)dev;
 923         int i;
 924
 925         rvfree(se401->fbuf, se401->maxframesize * SE401_NUMFRAMES);
 926         if (se401->removed) {
 927                 usb_se401_remove_disconnected(se401);
 928                 info("device unregistered");
 929         } else {
 930                 for (i=0; i<SE401_NUMFRAMES; i++)
 931                         se401->frame[i].grabstate=FRAME_UNUSED;
 932                 if (se401->streaming)
 933                         se401_stop_stream(se401);
 934                 se401->user=0;
 935         }
 936         file->private_data = NULL;
 937         return 0;
 938 }
 939
 940 static int se401_do_ioctl(struct inode *inode, struct file *file,
 941                           unsigned int cmd, void *arg)
 942 {
 943         struct video_device *vdev = file->private_data;
 944         struct usb_se401 *se401 = (struct usb_se401 *)vdev;
 945
 946         if (!se401->dev)
 947                 return -EIO;
 948
 949         switch (cmd) {
 950         case VIDIOCGCAP:
 951         {
 952                 struct video_capability *b = arg;
 953                 strcpy(b->name, se401->camera_name);
 954                 b->type = VID_TYPE_CAPTURE;
 955                 b->channels = 1;
 956                 b->audios = 0;
 957                 b->maxwidth = se401->width[se401->sizes-1];
 958                 b->maxheight = se401->height[se401->sizes-1];
 959                 b->minwidth = se401->width[0];
 960                 b->minheight = se401->height[0];
 961                 return 0;
 962         }
 963         case VIDIOCGCHAN:
 964         {
 965                 struct video_channel *v = arg;
 966
 967                 if (v->channel != 0)
 968                         return -EINVAL;
 969                 v->flags = 0;
 970                 v->tuners = 0;
 971                 v->type = VIDEO_TYPE_CAMERA;
 972                 strcpy(v->name, "Camera");
 973                 return 0;
 974         }
 975         case VIDIOCSCHAN:
 976         {
 977                 struct video_channel *v = arg;
 978
 979                 if (v->channel != 0)
 980                         return -EINVAL;
 981                 return 0;
 982         }
 983         case VIDIOCGPICT:
 984         {
 985                 struct video_picture *p = arg;
 986
 987                 se401_get_pict(se401, p);
 988                 return 0;
 989         }
 990         case VIDIOCSPICT:
 991         {
 992                 struct video_picture *p = arg;
 993
 994                 if (se401_set_pict(se401, p))
 995                         return -EINVAL;
 996                 return 0;
 997         }
 998         case VIDIOCSWIN:
 999         {
1000                 struct video_window *vw = arg;
1001
1002                 if (vw->flags)
1003                         return -EINVAL;
1004                 if (vw->clipcount)
1005                         return -EINVAL;
1006                 if (se401_set_size(se401, vw->width, vw->height))
1007                         return -EINVAL;
1008                 return 0;
1009         }
1010         case VIDIOCGWIN:
1011         {
1012                 struct video_window *vw = arg;
1013
1014                 vw->x = 0;               /* FIXME */
1015                 vw->y = 0;
1016                 vw->chromakey = 0;
1017                 vw->flags = 0;
1018                 vw->clipcount = 0;
1019                 vw->width = se401->cwidth;
1020                 vw->height = se401->cheight;
1021                 return 0;
1022         }
1023         case VIDIOCGMBUF:
1024         {
1025                 struct video_mbuf *vm = arg;
1026                 int i;
1027
1028                 memset(vm, 0, sizeof(*vm));
1029                 vm->size = SE401_NUMFRAMES * se401->maxframesize;
1030                 vm->frames = SE401_NUMFRAMES;
1031                 for (i=0; i<SE401_NUMFRAMES; i++)
1032                         vm->offsets[i] = se401->maxframesize * i;
1033                 return 0;
1034         }
1035         case VIDIOCMCAPTURE:
1036         {
1037                 struct video_mmap *vm = arg;
1038
1039                 if (vm->format != VIDEO_PALETTE_RGB24)
1040                         return -EINVAL;
1041                 if (vm->frame >= SE401_NUMFRAMES)
1042                         return -EINVAL;
1043                 if (se401->frame[vm->frame].grabstate != FRAME_UNUSED)
1044                         return -EBUSY;
1045
1046                 /* Is this according to the v4l spec??? */
1047                 if (se401_set_size(se401, vm->width, vm->height))
1048                         return -EINVAL;
1049                 se401->frame[vm->frame].grabstate=FRAME_READY;
1050
1051                 if (!se401->streaming)
1052                         se401_start_stream(se401);
1053
1054                 /* Set the picture properties */
1055                 if (se401->framecount==0)
1056                         se401_send_pict(se401);
1057                 /* Calibrate the reset level after a few frames. */
1058                 if (se401->framecount%20==1)
1059                         se401_auto_resetlevel(se401);
1060
1061                 return 0;
1062         }
1063         case VIDIOCSYNC:
1064         {
1065                 int *frame = arg;
1066                 int ret=0;
1067
1068                 if(*frame <0 || *frame >= SE401_NUMFRAMES)
1069                         return -EINVAL;
1070
1071                 ret=se401_newframe(se401, *frame);
1072                 se401->frame[*frame].grabstate=FRAME_UNUSED;
1073                 return ret;
1074         }
1075         case VIDIOCGFBUF:
1076         {
1077                 struct video_buffer *vb = arg;
1078
1079                 memset(vb, 0, sizeof(*vb));
1080                 return 0;
1081         }
1082         case VIDIOCKEY:
1083                 return 0;
1084         case VIDIOCCAPTURE:
1085                 return -EINVAL;
1086         case VIDIOCSFBUF:
1087                 return -EINVAL;
1088         case VIDIOCGTUNER:
1089         case VIDIOCSTUNER:
1090                 return -EINVAL;
1091         case VIDIOCGFREQ:
1092         case VIDIOCSFREQ:
1093                 return -EINVAL;
1094         case VIDIOCGAUDIO:
1095         case VIDIOCSAUDIO:
1096                 return -EINVAL;
1097         default:
1098                 return -ENOIOCTLCMD;
1099         } /* end switch */
1100
1101         return 0;
1102 }
1103
1104 static int se401_ioctl(struct inode *inode, struct file *file,
1105                        unsigned int cmd, unsigned long arg)
1106 {
1107         return video_usercopy(inode, file, cmd, arg, se401_do_ioctl);
1108 }
1109
1110 static ssize_t se401_read(struct file *file, char __user *buf,
1111                      size_t count, loff_t *ppos)
1112 {
1113         int realcount=count, ret=0;
1114         struct video_device *dev = file->private_data;
1115         struct usb_se401 *se401 = (struct usb_se401 *)dev;
1116
1117
1118         if (se401->dev == NULL)
1119                 return -EIO;
1120         if (realcount > se401->cwidth*se401->cheight*3)
1121                 realcount=se401->cwidth*se401->cheight*3;
1122
1123         /* Shouldn't happen: */
1124         if (se401->frame[0].grabstate==FRAME_GRABBING)
1125                 return -EBUSY;
1126         se401->frame[0].grabstate=FRAME_READY;
1127         se401->frame[1].grabstate=FRAME_UNUSED;
1128         se401->curframe=0;
1129
1130         if (!se401->streaming)
1131                 se401_start_stream(se401);
1132
1133         /* Set the picture properties */
1134         if (se401->framecount==0)
1135                 se401_send_pict(se401);
1136         /* Calibrate the reset level after a few frames. */
1137         if (se401->framecount%20==1)
1138                 se401_auto_resetlevel(se401);
1139
1140         ret=se401_newframe(se401, 0);
1141
1142         se401->frame[0].grabstate=FRAME_UNUSED;
1143         if (ret)
1144                 return ret;
1145         if (copy_to_user(buf, se401->frame[0].data, realcount))
1146                 return -EFAULT;
1147
1148         return realcount;
1149 }
1150
1151 static int se401_mmap(struct file *file, struct vm_area_struct *vma)
1152 {
1153         struct video_device *dev = file->private_data;
1154         struct usb_se401 *se401 = (struct usb_se401 *)dev;
1155         unsigned long start = vma->vm_start;
1156         unsigned long size  = vma->vm_end-vma->vm_start;
1157         unsigned long page, pos;
1158
1159         mutex_lock(&se401->lock);
1160
1161         if (se401->dev == NULL) {
1162                 mutex_unlock(&se401->lock);
1163                 return -EIO;
1164         }
1165         if (size > (((SE401_NUMFRAMES * se401->maxframesize) + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1))) {
1166                 mutex_unlock(&se401->lock);
1167                 return -EINVAL;
1168         }
1169         pos = (unsigned long)se401->fbuf;
1170         while (size > 0) {
1171                 page = vmalloc_to_pfn((void *)pos);
1172                 if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) {
1173                         mutex_unlock(&se401->lock);
1174                         return -EAGAIN;
1175                 }
1176                 start += PAGE_SIZE;
1177                 pos += PAGE_SIZE;
1178                 if (size > PAGE_SIZE)
1179                         size -= PAGE_SIZE;
1180                 else
1181                         size = 0;
1182         }
1183         mutex_unlock(&se401->lock);
1184
1185         return 0;
1186 }
1187
1188 static struct file_operations se401_fops = {
1189         .owner =        THIS_MODULE,
1190         .open =         se401_open,
1191         .release =      se401_close,
1192         .read =         se401_read,
1193         .mmap =         se401_mmap,
1194         .ioctl =        se401_ioctl,
1195         .compat_ioctl = v4l_compat_ioctl32,
1196         .llseek =       no_llseek,
1197 };
1198 static struct video_device se401_template = {
1199         .owner =        THIS_MODULE,
1200         .name =         "se401 USB camera",
1201         .type =         VID_TYPE_CAPTURE,
1202         .hardware =     VID_HARDWARE_SE401,
1203         .fops =         &se401_fops,
1204 };
1205
1206
1207
1208 /***************************/
1209 static int se401_init(struct usb_se401 *se401, int button)
1210 {
1211         int i=0, rc;
1212         unsigned char cp[0x40];
1213         char temp[200];
1214
1215         /* led on */
1216         se401_sndctrl(1, se401, SE401_REQ_LED_CONTROL, 1, NULL, 0);
1217
1218         /* get camera descriptor */
1219         rc=se401_sndctrl(0, se401, SE401_REQ_GET_CAMERA_DESCRIPTOR, 0, cp, sizeof(cp));
1220         if (cp[1]!=0x41) {
1221                 err("Wrong descriptor type");
1222                 return 1;
1223         }
1224         sprintf (temp, "ExtraFeatures: %d", cp[3]);
1225
1226         se401->sizes=cp[4]+cp[5]*256;
1227         se401->width=kmalloc(se401->sizes*sizeof(int), GFP_KERNEL);
1228         if (!se401->width)
1229                 return 1;
1230         se401->height=kmalloc(se401->sizes*sizeof(int), GFP_KERNEL);
1231         if (!se401->height) {
1232                 kfree(se401->width);
1233                 return 1;
1234         }
1235         for (i=0; i<se401->sizes; i++) {
1236                     se401->width[i]=cp[6+i*4+0]+cp[6+i*4+1]*256;
1237                     se401->height[i]=cp[6+i*4+2]+cp[6+i*4+3]*256;
1238         }
1239         sprintf (temp, "%s Sizes:", temp);
1240         for (i=0; i<se401->sizes; i++) {
1241                 sprintf(temp, "%s %dx%d", temp, se401->width[i], se401->height[i]);
1242         }
1243         info("%s", temp);
1244         se401->maxframesize=se401->width[se401->sizes-1]*se401->height[se401->sizes-1]*3;
1245
1246         rc=se401_sndctrl(0, se401, SE401_REQ_GET_WIDTH, 0, cp, sizeof(cp));
1247         se401->cwidth=cp[0]+cp[1]*256;
1248         rc=se401_sndctrl(0, se401, SE401_REQ_GET_HEIGHT, 0, cp, sizeof(cp));
1249         se401->cheight=cp[0]+cp[1]*256;
1250
1251         if (!cp[2] && SE401_FORMAT_BAYER) {
1252                 err("Bayer format not supported!");
1253                 return 1;
1254         }
1255         /* set output mode (BAYER) */
1256         se401_sndctrl(1, se401, SE401_REQ_SET_OUTPUT_MODE, SE401_FORMAT_BAYER, NULL, 0);
1257
1258         rc=se401_sndctrl(0, se401, SE401_REQ_GET_BRT, 0, cp, sizeof(cp));
1259         se401->brightness=cp[0]+cp[1]*256;
1260         /* some default values */
1261         se401->resetlevel=0x2d;
1262         se401->rgain=0x20;
1263         se401->ggain=0x20;
1264         se401->bgain=0x20;
1265         se401_set_exposure(se401, 20000);
1266         se401->palette=VIDEO_PALETTE_RGB24;
1267         se401->enhance=1;
1268         se401->dropped=0;
1269         se401->error=0;
1270         se401->framecount=0;
1271         se401->readcount=0;
1272
1273         /* Start interrupt transfers for snapshot button */
1274         if (button) {
1275                 se401->inturb=usb_alloc_urb(0, GFP_KERNEL);
1276                 if (!se401->inturb) {
1277                         info("Allocation of inturb failed");
1278                         return 1;
1279                 }
1280                 usb_fill_int_urb(se401->inturb, se401->dev,
1281                     usb_rcvintpipe(se401->dev, SE401_BUTTON_ENDPOINT),
1282                     &se401->button, sizeof(se401->button),
1283                     se401_button_irq,
1284                     se401,
1285                     8
1286                 );
1287                 if (usb_submit_urb(se401->inturb, GFP_KERNEL)) {
1288                         info("int urb burned down");
1289                         return 1;
1290                 }
1291         } else
1292                 se401->inturb=NULL;
1293
1294         /* Flash the led */
1295         se401_sndctrl(1, se401, SE401_REQ_CAMERA_POWER, 1, NULL, 0);
1296         se401_sndctrl(1, se401, SE401_REQ_LED_CONTROL, 1, NULL, 0);
1297         se401_sndctrl(1, se401, SE401_REQ_CAMERA_POWER, 0, NULL, 0);
1298         se401_sndctrl(1, se401, SE401_REQ_LED_CONTROL, 0, NULL, 0);
1299
1300         return 0;
1301 }
1302
1303 static int se401_probe(struct usb_interface *intf,
1304         const struct usb_device_id *id)
1305 {
1306         struct usb_device *dev = interface_to_usbdev(intf);
1307         struct usb_interface_descriptor *interface;
1308         struct usb_se401 *se401;
1309         char *camera_name=NULL;
1310         int button=1;
1311
1312         /* We don't handle multi-config cameras */
1313         if (dev->descriptor.bNumConfigurations != 1)
1314                 return -ENODEV;
1315
1316         interface = &intf->cur_altsetting->desc;
1317
1318         /* Is it an se401? */
1319         if (le16_to_cpu(dev->descriptor.idVendor) == 0x03e8 &&
1320             le16_to_cpu(dev->descriptor.idProduct) == 0x0004) {
1321                 camera_name="Endpoints/Aox SE401";
1322         } else if (le16_to_cpu(dev->descriptor.idVendor) == 0x0471 &&
1323             le16_to_cpu(dev->descriptor.idProduct) == 0x030b) {
1324                 camera_name="Philips PCVC665K";
1325         } else if (le16_to_cpu(dev->descriptor.idVendor) == 0x047d &&
1326             le16_to_cpu(dev->descriptor.idProduct) == 0x5001) {
1327                 camera_name="Kensington VideoCAM 67014";
1328         } else if (le16_to_cpu(dev->descriptor.idVendor) == 0x047d &&
1329             le16_to_cpu(dev->descriptor.idProduct) == 0x5002) {
1330                 camera_name="Kensington VideoCAM 6701(5/7)";
1331         } else if (le16_to_cpu(dev->descriptor.idVendor) == 0x047d &&
1332             le16_to_cpu(dev->descriptor.idProduct) == 0x5003) {
1333                 camera_name="Kensington VideoCAM 67016";
1334                 button=0;
1335         } else
1336                 return -ENODEV;
1337
1338         /* Checking vendor/product should be enough, but what the hell */
1339         if (interface->bInterfaceClass != 0x00)
1340                 return -ENODEV;
1341         if (interface->bInterfaceSubClass != 0x00)
1342                 return -ENODEV;
1343
1344         /* We found one */
1345         info("SE401 camera found: %s", camera_name);
1346
1347         if ((se401 = kzalloc(sizeof(*se401), GFP_KERNEL)) == NULL) {
1348                 err("couldn't kmalloc se401 struct");
1349                 return -ENOMEM;
1350         }
1351
1352         se401->dev = dev;
1353         se401->iface = interface->bInterfaceNumber;
1354         se401->camera_name = camera_name;
1355
1356         info("firmware version: %02x", le16_to_cpu(dev->descriptor.bcdDevice) & 255);
1357
1358         if (se401_init(se401, button)) {
1359                 kfree(se401);
1360                 return -EIO;
1361         }
1362
1363         memcpy(&se401->vdev, &se401_template, sizeof(se401_template));
1364         memcpy(se401->vdev.name, se401->camera_name, strlen(se401->camera_name));
1365         init_waitqueue_head(&se401->wq);
1366         mutex_init(&se401->lock);
1367         wmb();
1368
1369         if (video_register_device(&se401->vdev, VFL_TYPE_GRABBER, video_nr) == -1) {
1370                 kfree(se401);
1371                 err("video_register_device failed");
1372                 return -EIO;
1373         }
1374         info("registered new video device: video%d", se401->vdev.minor);
1375
1376         usb_set_intfdata (intf, se401);
1377         return 0;
1378 }
1379
1380 static void se401_disconnect(struct usb_interface *intf)
1381 {
1382         struct usb_se401 *se401 = usb_get_intfdata (intf);
1383
1384         usb_set_intfdata (intf, NULL);
1385         if (se401) {
1386                 video_unregister_device(&se401->vdev);
1387                 if (!se401->user){
1388                         usb_se401_remove_disconnected(se401);
1389                 } else {
1390                         se401->frame[0].grabstate = FRAME_ERROR;
1391                         se401->frame[0].grabstate = FRAME_ERROR;
1392
1393                         se401->streaming = 0;
1394
1395                         wake_up_interruptible(&se401->wq);
1396                         se401->removed = 1;
1397                 }
1398         }
1399 }
1400
1401 static struct usb_driver se401_driver = {
1402         .name           = "se401",
1403         .id_table       = device_table,
1404         .probe          = se401_probe,
1405         .disconnect     = se401_disconnect,
1406 };
1407
1408
1409
1410 /****************************************************************************
1411  *
1412  *  Module routines
1413  *
1414  ***************************************************************************/
1415
1416 static int __init usb_se401_init(void)
1417 {
1418         info("SE401 usb camera driver version %s registering", version);
1419         if (flickerless)
1420                 if (flickerless!=50 && flickerless!=60) {
1421                         info("Invallid flickerless value, use 0, 50 or 60.");
1422                         return -1;
1423         }
1424         return usb_register(&se401_driver);
1425 }
1426
1427 static void __exit usb_se401_exit(void)
1428 {
1429         usb_deregister(&se401_driver);
1430         info("SE401 driver deregistered");
1431 }
1432
1433 module_init(usb_se401_init);
1434 module_exit(usb_se401_exit);