git.oblomov.eu Git - linux-2.6/blob - drivers/media/video/cpia2/cpia2_v4l.c

   1 /****************************************************************************
   2  *
   3  *  Filename: cpia2_v4l.c
   4  *
   5  *  Copyright 2001, STMicrolectronics, Inc.
   6  *      Contact:  steve.miller@st.com
   7  *  Copyright 2001,2005, Scott J. Bertin <scottbertin@yahoo.com>
   8  *
   9  *  Description:
  10  *     This is a USB driver for CPia2 based video cameras.
  11  *     The infrastructure of this driver is based on the cpia usb driver by
  12  *     Jochen Scharrlach and Johannes Erdfeldt.
  13  *
  14  *  This program is free software; you can redistribute it and/or modify
  15  *  it under the terms of the GNU General Public License as published by
  16  *  the Free Software Foundation; either version 2 of the License, or
  17  *  (at your option) any later version.
  18  *
  19  *  This program is distributed in the hope that it will be useful,
  20  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  *  GNU General Public License for more details.
  23  *
  24  *  You should have received a copy of the GNU General Public License
  25  *  along with this program; if not, write to the Free Software
  26  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  27  *
  28  *  Stripped of 2.4 stuff ready for main kernel submit by
  29  *              Alan Cox <alan@redhat.com>
  30  ****************************************************************************/
  31
  32 #include <linux/version.h>
  33
  34
  35 #include <linux/module.h>
  36 #include <linux/time.h>
  37 #include <linux/sched.h>
  38 #include <linux/slab.h>
  39 #include <linux/init.h>
  40
  41 #include "cpia2.h"
  42 #include "cpia2dev.h"
  43
  44
  45 //#define _CPIA2_DEBUG_
  46
  47 #define MAKE_STRING_1(x)        #x
  48 #define MAKE_STRING(x)  MAKE_STRING_1(x)
  49
  50 static int video_nr = -1;
  51 module_param(video_nr, int, 0);
  52 MODULE_PARM_DESC(video_nr,"video device to register (0=/dev/video0, etc)");
  53
  54 static int buffer_size = 68*1024;
  55 module_param(buffer_size, int, 0);
  56 MODULE_PARM_DESC(buffer_size, "Size for each frame buffer in bytes (default 68k)");
  57
  58 static int num_buffers = 3;
  59 module_param(num_buffers, int, 0);
  60 MODULE_PARM_DESC(num_buffers, "Number of frame buffers (1-"
  61                  MAKE_STRING(VIDEO_MAX_FRAME) ", default 3)");
  62
  63 static int alternate = DEFAULT_ALT;
  64 module_param(alternate, int, 0);
  65 MODULE_PARM_DESC(alternate, "USB Alternate (" MAKE_STRING(USBIF_ISO_1) "-"
  66                  MAKE_STRING(USBIF_ISO_6) ", default "
  67                  MAKE_STRING(DEFAULT_ALT) ")");
  68
  69 static int flicker_freq = 60;
  70 module_param(flicker_freq, int, 0);
  71 MODULE_PARM_DESC(flicker_freq, "Flicker frequency (" MAKE_STRING(50) "or"
  72                  MAKE_STRING(60) ", default "
  73                  MAKE_STRING(60) ")");
  74
  75 static int flicker_mode = NEVER_FLICKER;
  76 module_param(flicker_mode, int, 0);
  77 MODULE_PARM_DESC(flicker_mode,
  78                  "Flicker supression (" MAKE_STRING(NEVER_FLICKER) "or"
  79                  MAKE_STRING(ANTI_FLICKER_ON) ", default "
  80                  MAKE_STRING(NEVER_FLICKER) ")");
  81
  82 MODULE_AUTHOR("Steve Miller (STMicroelectronics) <steve.miller@st.com>");
  83 MODULE_DESCRIPTION("V4L-driver for STMicroelectronics CPiA2 based cameras");
  84 MODULE_SUPPORTED_DEVICE("video");
  85 MODULE_LICENSE("GPL");
  86
  87 #define ABOUT "V4L-Driver for Vision CPiA2 based cameras"
  88
  89 struct control_menu_info {
  90         int value;
  91         char name[32];
  92 };
  93
  94 static struct control_menu_info framerate_controls[] =
  95 {
  96         { CPIA2_VP_FRAMERATE_6_25, "6.25 fps" },
  97         { CPIA2_VP_FRAMERATE_7_5,  "7.5 fps"  },
  98         { CPIA2_VP_FRAMERATE_12_5, "12.5 fps" },
  99         { CPIA2_VP_FRAMERATE_15,   "15 fps"   },
 100         { CPIA2_VP_FRAMERATE_25,   "25 fps"   },
 101         { CPIA2_VP_FRAMERATE_30,   "30 fps"   },
 102 };
 103 #define NUM_FRAMERATE_CONTROLS (ARRAY_SIZE(framerate_controls))
 104
 105 static struct control_menu_info flicker_controls[] =
 106 {
 107         { NEVER_FLICKER, "Off" },
 108         { FLICKER_50,    "50 Hz" },
 109         { FLICKER_60,    "60 Hz"  },
 110 };
 111 #define NUM_FLICKER_CONTROLS (ARRAY_SIZE(flicker_controls))
 112
 113 static struct control_menu_info lights_controls[] =
 114 {
 115         { 0,   "Off" },
 116         { 64,  "Top" },
 117         { 128, "Bottom"  },
 118         { 192, "Both"  },
 119 };
 120 #define NUM_LIGHTS_CONTROLS (ARRAY_SIZE(lights_controls))
 121 #define GPIO_LIGHTS_MASK 192
 122
 123 static struct v4l2_queryctrl controls[] = {
 124         {
 125                 .id            = V4L2_CID_BRIGHTNESS,
 126                 .type          = V4L2_CTRL_TYPE_INTEGER,
 127                 .name          = "Brightness",
 128                 .minimum       = 0,
 129                 .maximum       = 255,
 130                 .step          = 1,
 131                 .default_value = DEFAULT_BRIGHTNESS,
 132         },
 133         {
 134                 .id            = V4L2_CID_CONTRAST,
 135                 .type          = V4L2_CTRL_TYPE_INTEGER,
 136                 .name          = "Contrast",
 137                 .minimum       = 0,
 138                 .maximum       = 255,
 139                 .step          = 1,
 140                 .default_value = DEFAULT_CONTRAST,
 141         },
 142         {
 143                 .id            = V4L2_CID_SATURATION,
 144                 .type          = V4L2_CTRL_TYPE_INTEGER,
 145                 .name          = "Saturation",
 146                 .minimum       = 0,
 147                 .maximum       = 255,
 148                 .step          = 1,
 149                 .default_value = DEFAULT_SATURATION,
 150         },
 151         {
 152                 .id            = V4L2_CID_HFLIP,
 153                 .type          = V4L2_CTRL_TYPE_BOOLEAN,
 154                 .name          = "Mirror Horizontally",
 155                 .minimum       = 0,
 156                 .maximum       = 1,
 157                 .step          = 1,
 158                 .default_value = 0,
 159         },
 160         {
 161                 .id            = V4L2_CID_VFLIP,
 162                 .type          = V4L2_CTRL_TYPE_BOOLEAN,
 163                 .name          = "Flip Vertically",
 164                 .minimum       = 0,
 165                 .maximum       = 1,
 166                 .step          = 1,
 167                 .default_value = 0,
 168         },
 169         {
 170                 .id            = CPIA2_CID_TARGET_KB,
 171                 .type          = V4L2_CTRL_TYPE_INTEGER,
 172                 .name          = "Target KB",
 173                 .minimum       = 0,
 174                 .maximum       = 255,
 175                 .step          = 1,
 176                 .default_value = DEFAULT_TARGET_KB,
 177         },
 178         {
 179                 .id            = CPIA2_CID_GPIO,
 180                 .type          = V4L2_CTRL_TYPE_INTEGER,
 181                 .name          = "GPIO",
 182                 .minimum       = 0,
 183                 .maximum       = 255,
 184                 .step          = 1,
 185                 .default_value = 0,
 186         },
 187         {
 188                 .id            = CPIA2_CID_FLICKER_MODE,
 189                 .type          = V4L2_CTRL_TYPE_MENU,
 190                 .name          = "Flicker Reduction",
 191                 .minimum       = 0,
 192                 .maximum       = NUM_FLICKER_CONTROLS-1,
 193                 .step          = 1,
 194                 .default_value = 0,
 195         },
 196         {
 197                 .id            = CPIA2_CID_FRAMERATE,
 198                 .type          = V4L2_CTRL_TYPE_MENU,
 199                 .name          = "Framerate",
 200                 .minimum       = 0,
 201                 .maximum       = NUM_FRAMERATE_CONTROLS-1,
 202                 .step          = 1,
 203                 .default_value = NUM_FRAMERATE_CONTROLS-1,
 204         },
 205         {
 206                 .id            = CPIA2_CID_USB_ALT,
 207                 .type          = V4L2_CTRL_TYPE_INTEGER,
 208                 .name          = "USB Alternate",
 209                 .minimum       = USBIF_ISO_1,
 210                 .maximum       = USBIF_ISO_6,
 211                 .step          = 1,
 212                 .default_value = DEFAULT_ALT,
 213         },
 214         {
 215                 .id            = CPIA2_CID_LIGHTS,
 216                 .type          = V4L2_CTRL_TYPE_MENU,
 217                 .name          = "Lights",
 218                 .minimum       = 0,
 219                 .maximum       = NUM_LIGHTS_CONTROLS-1,
 220                 .step          = 1,
 221                 .default_value = 0,
 222         },
 223         {
 224                 .id            = CPIA2_CID_RESET_CAMERA,
 225                 .type          = V4L2_CTRL_TYPE_BUTTON,
 226                 .name          = "Reset Camera",
 227                 .minimum       = 0,
 228                 .maximum       = 0,
 229                 .step          = 0,
 230                 .default_value = 0,
 231         },
 232 };
 233 #define NUM_CONTROLS (ARRAY_SIZE(controls))
 234
 235
 236 /******************************************************************************
 237  *
 238  *  cpia2_open
 239  *
 240  *****************************************************************************/
 241 static int cpia2_open(struct inode *inode, struct file *file)
 242 {
 243         struct video_device *dev = video_devdata(file);
 244         struct camera_data *cam = video_get_drvdata(dev);
 245         int retval = 0;
 246
 247         if (!cam) {
 248                 ERR("Internal error, camera_data not found!\n");
 249                 return -ENODEV;
 250         }
 251
 252         if(mutex_lock_interruptible(&cam->busy_lock))
 253                 return -ERESTARTSYS;
 254
 255         if(!cam->present) {
 256                 retval = -ENODEV;
 257                 goto err_return;
 258         }
 259
 260         if (cam->open_count > 0) {
 261                 goto skip_init;
 262         }
 263
 264         if (cpia2_allocate_buffers(cam)) {
 265                 retval = -ENOMEM;
 266                 goto err_return;
 267         }
 268
 269         /* reset the camera */
 270         if (cpia2_reset_camera(cam) < 0) {
 271                 retval = -EIO;
 272                 goto err_return;
 273         }
 274
 275         cam->APP_len = 0;
 276         cam->COM_len = 0;
 277
 278 skip_init:
 279         {
 280                 struct cpia2_fh *fh = kmalloc(sizeof(*fh),GFP_KERNEL);
 281                 if(!fh) {
 282                         retval = -ENOMEM;
 283                         goto err_return;
 284                 }
 285                 file->private_data = fh;
 286                 fh->prio = V4L2_PRIORITY_UNSET;
 287                 v4l2_prio_open(&cam->prio, &fh->prio);
 288                 fh->mmapped = 0;
 289         }
 290
 291         ++cam->open_count;
 292
 293         cpia2_dbg_dump_registers(cam);
 294
 295 err_return:
 296         mutex_unlock(&cam->busy_lock);
 297         return retval;
 298 }
 299
 300 /******************************************************************************
 301  *
 302  *  cpia2_close
 303  *
 304  *****************************************************************************/
 305 static int cpia2_close(struct inode *inode, struct file *file)
 306 {
 307         struct video_device *dev = video_devdata(file);
 308         struct camera_data *cam = video_get_drvdata(dev);
 309         struct cpia2_fh *fh = file->private_data;
 310
 311         mutex_lock(&cam->busy_lock);
 312
 313         if (cam->present &&
 314             (cam->open_count == 1
 315              || fh->prio == V4L2_PRIORITY_RECORD
 316             )) {
 317                 cpia2_usb_stream_stop(cam);
 318
 319                 if(cam->open_count == 1) {
 320                         /* save camera state for later open */
 321                         cpia2_save_camera_state(cam);
 322
 323                         cpia2_set_low_power(cam);
 324                         cpia2_free_buffers(cam);
 325                 }
 326         }
 327
 328         {
 329                 if(fh->mmapped)
 330                         cam->mmapped = 0;
 331                 v4l2_prio_close(&cam->prio,&fh->prio);
 332                 file->private_data = NULL;
 333                 kfree(fh);
 334         }
 335
 336         if (--cam->open_count == 0) {
 337                 cpia2_free_buffers(cam);
 338                 if (!cam->present) {
 339                         video_unregister_device(dev);
 340                         mutex_unlock(&cam->busy_lock);
 341                         kfree(cam);
 342                         return 0;
 343                 }
 344         }
 345
 346         mutex_unlock(&cam->busy_lock);
 347
 348         return 0;
 349 }
 350
 351 /******************************************************************************
 352  *
 353  *  cpia2_v4l_read
 354  *
 355  *****************************************************************************/
 356 static ssize_t cpia2_v4l_read(struct file *file, char __user *buf, size_t count,
 357                               loff_t *off)
 358 {
 359         struct video_device *dev = video_devdata(file);
 360         struct camera_data *cam = video_get_drvdata(dev);
 361         int noblock = file->f_flags&O_NONBLOCK;
 362
 363         struct cpia2_fh *fh = file->private_data;
 364
 365         if(!cam)
 366                 return -EINVAL;
 367
 368         /* Priority check */
 369         if(fh->prio != V4L2_PRIORITY_RECORD) {
 370                 return -EBUSY;
 371         }
 372
 373         return cpia2_read(cam, buf, count, noblock);
 374 }
 375
 376
 377 /******************************************************************************
 378  *
 379  *  cpia2_v4l_poll
 380  *
 381  *****************************************************************************/
 382 static unsigned int cpia2_v4l_poll(struct file *filp, struct poll_table_struct *wait)
 383 {
 384         struct video_device *dev = video_devdata(filp);
 385         struct camera_data *cam = video_get_drvdata(dev);
 386
 387         struct cpia2_fh *fh = filp->private_data;
 388
 389         if(!cam)
 390                 return POLLERR;
 391
 392         /* Priority check */
 393         if(fh->prio != V4L2_PRIORITY_RECORD) {
 394                 return POLLERR;
 395         }
 396
 397         return cpia2_poll(cam, filp, wait);
 398 }
 399
 400
 401 /******************************************************************************
 402  *
 403  *  ioctl_cap_query
 404  *
 405  *****************************************************************************/
 406 static int ioctl_cap_query(void *arg, struct camera_data *cam)
 407 {
 408         struct video_capability *vc;
 409         int retval = 0;
 410         vc = arg;
 411
 412         if (cam->params.pnp_id.product == 0x151)
 413                 strcpy(vc->name, "QX5 Microscope");
 414         else
 415                 strcpy(vc->name, "CPiA2 Camera");
 416
 417         vc->type = VID_TYPE_CAPTURE | VID_TYPE_MJPEG_ENCODER;
 418         vc->channels = 1;
 419         vc->audios = 0;
 420         vc->minwidth = 176;     /* VIDEOSIZE_QCIF */
 421         vc->minheight = 144;
 422         switch (cam->params.version.sensor_flags) {
 423         case CPIA2_VP_SENSOR_FLAGS_500:
 424                 vc->maxwidth = STV_IMAGE_VGA_COLS;
 425                 vc->maxheight = STV_IMAGE_VGA_ROWS;
 426                 break;
 427         case CPIA2_VP_SENSOR_FLAGS_410:
 428                 vc->maxwidth = STV_IMAGE_CIF_COLS;
 429                 vc->maxheight = STV_IMAGE_CIF_ROWS;
 430                 break;
 431         default:
 432                 return -EINVAL;
 433         }
 434
 435         return retval;
 436 }
 437
 438 /******************************************************************************
 439  *
 440  *  ioctl_get_channel
 441  *
 442  *****************************************************************************/
 443 static int ioctl_get_channel(void *arg)
 444 {
 445         int retval = 0;
 446         struct video_channel *v;
 447         v = arg;
 448
 449         if (v->channel != 0)
 450                 return -EINVAL;
 451
 452         v->channel = 0;
 453         strcpy(v->name, "Camera");
 454         v->tuners = 0;
 455         v->flags = 0;
 456         v->type = VIDEO_TYPE_CAMERA;
 457         v->norm = 0;
 458
 459         return retval;
 460 }
 461
 462 /******************************************************************************
 463  *
 464  *  ioctl_set_channel
 465  *
 466  *****************************************************************************/
 467 static int ioctl_set_channel(void *arg)
 468 {
 469         struct video_channel *v;
 470         int retval = 0;
 471         v = arg;
 472
 473         if (retval == 0 && v->channel != 0)
 474                 retval = -EINVAL;
 475
 476         return retval;
 477 }
 478
 479 /******************************************************************************
 480  *
 481  *  ioctl_set_image_prop
 482  *
 483  *****************************************************************************/
 484 static int ioctl_set_image_prop(void *arg, struct camera_data *cam)
 485 {
 486         struct video_picture *vp;
 487         int retval = 0;
 488         vp = arg;
 489
 490         /* brightness, color, contrast need no check 0-65535 */
 491         memcpy(&cam->vp, vp, sizeof(*vp));
 492
 493         /* update cam->params.colorParams */
 494         cam->params.color_params.brightness = vp->brightness / 256;
 495         cam->params.color_params.saturation = vp->colour / 256;
 496         cam->params.color_params.contrast = vp->contrast / 256;
 497
 498         DBG("Requested params: bright 0x%X, sat 0x%X, contrast 0x%X\n",
 499             cam->params.color_params.brightness,
 500             cam->params.color_params.saturation,
 501             cam->params.color_params.contrast);
 502
 503         cpia2_set_color_params(cam);
 504
 505         return retval;
 506 }
 507
 508 static int sync(struct camera_data *cam, int frame_nr)
 509 {
 510         struct framebuf *frame = &cam->buffers[frame_nr];
 511
 512         while (1) {
 513                 if (frame->status == FRAME_READY)
 514                         return 0;
 515
 516                 if (!cam->streaming) {
 517                         frame->status = FRAME_READY;
 518                         frame->length = 0;
 519                         return 0;
 520                 }
 521
 522                 mutex_unlock(&cam->busy_lock);
 523                 wait_event_interruptible(cam->wq_stream,
 524                                          !cam->streaming ||
 525                                          frame->status == FRAME_READY);
 526                 mutex_lock(&cam->busy_lock);
 527                 if (signal_pending(current))
 528                         return -ERESTARTSYS;
 529                 if(!cam->present)
 530                         return -ENOTTY;
 531         }
 532 }
 533
 534 /******************************************************************************
 535  *
 536  *  ioctl_set_window_size
 537  *
 538  *****************************************************************************/
 539 static int ioctl_set_window_size(void *arg, struct camera_data *cam,
 540                                  struct cpia2_fh *fh)
 541 {
 542         /* copy_from_user, check validity, copy to internal structure */
 543         struct video_window *vw;
 544         int frame, err;
 545         vw = arg;
 546
 547         if (vw->clipcount != 0) /* clipping not supported */
 548                 return -EINVAL;
 549
 550         if (vw->clips != NULL)  /* clipping not supported */
 551                 return -EINVAL;
 552
 553         /* Ensure that only this process can change the format. */
 554         err = v4l2_prio_change(&cam->prio, &fh->prio, V4L2_PRIORITY_RECORD);
 555         if(err != 0)
 556                 return err;
 557
 558         cam->pixelformat = V4L2_PIX_FMT_JPEG;
 559
 560         /* Be sure to supply the Huffman tables, this isn't MJPEG */
 561         cam->params.compression.inhibit_htables = 0;
 562
 563         /* we set the video window to something smaller or equal to what
 564          * is requested by the user???
 565          */
 566         DBG("Requested width = %d, height = %d\n", vw->width, vw->height);
 567         if (vw->width != cam->vw.width || vw->height != cam->vw.height) {
 568                 cam->vw.width = vw->width;
 569                 cam->vw.height = vw->height;
 570                 cam->params.roi.width = vw->width;
 571                 cam->params.roi.height = vw->height;
 572                 cpia2_set_format(cam);
 573         }
 574
 575         for (frame = 0; frame < cam->num_frames; ++frame) {
 576                 if (cam->buffers[frame].status == FRAME_READING)
 577                         if ((err = sync(cam, frame)) < 0)
 578                                 return err;
 579
 580                 cam->buffers[frame].status = FRAME_EMPTY;
 581         }
 582
 583         return 0;
 584 }
 585
 586 /******************************************************************************
 587  *
 588  *  ioctl_get_mbuf
 589  *
 590  *****************************************************************************/
 591 static int ioctl_get_mbuf(void *arg, struct camera_data *cam)
 592 {
 593         struct video_mbuf *vm;
 594         int i;
 595         vm = arg;
 596
 597         memset(vm, 0, sizeof(*vm));
 598         vm->size = cam->frame_size*cam->num_frames;
 599         vm->frames = cam->num_frames;
 600         for (i = 0; i < cam->num_frames; i++)
 601                 vm->offsets[i] = cam->frame_size * i;
 602
 603         return 0;
 604 }
 605
 606 /******************************************************************************
 607  *
 608  *  ioctl_mcapture
 609  *
 610  *****************************************************************************/
 611 static int ioctl_mcapture(void *arg, struct camera_data *cam,
 612                           struct cpia2_fh *fh)
 613 {
 614         struct video_mmap *vm;
 615         int video_size, err;
 616         vm = arg;
 617
 618         if (vm->frame < 0 || vm->frame >= cam->num_frames)
 619                 return -EINVAL;
 620
 621         /* set video size */
 622         video_size = cpia2_match_video_size(vm->width, vm->height);
 623         if (cam->video_size < 0) {
 624                 return -EINVAL;
 625         }
 626
 627         /* Ensure that only this process can change the format. */
 628         err = v4l2_prio_change(&cam->prio, &fh->prio, V4L2_PRIORITY_RECORD);
 629         if(err != 0)
 630                 return err;
 631
 632         if (video_size != cam->video_size) {
 633                 cam->video_size = video_size;
 634                 cam->params.roi.width = vm->width;
 635                 cam->params.roi.height = vm->height;
 636                 cpia2_set_format(cam);
 637         }
 638
 639         if (cam->buffers[vm->frame].status == FRAME_READING)
 640                 if ((err=sync(cam, vm->frame)) < 0)
 641                         return err;
 642
 643         cam->buffers[vm->frame].status = FRAME_EMPTY;
 644
 645         return cpia2_usb_stream_start(cam,cam->params.camera_state.stream_mode);
 646 }
 647
 648 /******************************************************************************
 649  *
 650  *  ioctl_sync
 651  *
 652  *****************************************************************************/
 653 static int ioctl_sync(void *arg, struct camera_data *cam)
 654 {
 655         int frame;
 656
 657         frame = *(int*)arg;
 658
 659         if (frame < 0 || frame >= cam->num_frames)
 660                 return -EINVAL;
 661
 662         return sync(cam, frame);
 663 }
 664
 665
 666 /******************************************************************************
 667  *
 668  *  ioctl_set_gpio
 669  *
 670  *****************************************************************************/
 671
 672 static int ioctl_set_gpio(void *arg, struct camera_data *cam)
 673 {
 674         __u32 gpio_val;
 675
 676         gpio_val = *(__u32*) arg;
 677
 678         if (gpio_val &~ 0xFFU)
 679                 return -EINVAL;
 680
 681         return cpia2_set_gpio(cam, (unsigned char)gpio_val);
 682 }
 683
 684 /******************************************************************************
 685  *
 686  *  ioctl_querycap
 687  *
 688  *  V4L2 device capabilities
 689  *
 690  *****************************************************************************/
 691
 692 static int ioctl_querycap(void *arg, struct camera_data *cam)
 693 {
 694         struct v4l2_capability *vc = arg;
 695
 696         memset(vc, 0, sizeof(*vc));
 697         strcpy(vc->driver, "cpia2");
 698
 699         if (cam->params.pnp_id.product == 0x151)
 700                 strcpy(vc->card, "QX5 Microscope");
 701         else
 702                 strcpy(vc->card, "CPiA2 Camera");
 703         switch (cam->params.pnp_id.device_type) {
 704         case DEVICE_STV_672:
 705                 strcat(vc->card, " (672/");
 706                 break;
 707         case DEVICE_STV_676:
 708                 strcat(vc->card, " (676/");
 709                 break;
 710         default:
 711                 strcat(vc->card, " (???/");
 712                 break;
 713         }
 714         switch (cam->params.version.sensor_flags) {
 715         case CPIA2_VP_SENSOR_FLAGS_404:
 716                 strcat(vc->card, "404)");
 717                 break;
 718         case CPIA2_VP_SENSOR_FLAGS_407:
 719                 strcat(vc->card, "407)");
 720                 break;
 721         case CPIA2_VP_SENSOR_FLAGS_409:
 722                 strcat(vc->card, "409)");
 723                 break;
 724         case CPIA2_VP_SENSOR_FLAGS_410:
 725                 strcat(vc->card, "410)");
 726                 break;
 727         case CPIA2_VP_SENSOR_FLAGS_500:
 728                 strcat(vc->card, "500)");
 729                 break;
 730         default:
 731                 strcat(vc->card, "???)");
 732                 break;
 733         }
 734
 735         if (usb_make_path(cam->dev, vc->bus_info, sizeof(vc->bus_info)) <0)
 736                 memset(vc->bus_info,0, sizeof(vc->bus_info));
 737
 738         vc->version = KERNEL_VERSION(CPIA2_MAJ_VER, CPIA2_MIN_VER,
 739                                      CPIA2_PATCH_VER);
 740
 741         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
 742                            V4L2_CAP_READWRITE |
 743                            V4L2_CAP_STREAMING;
 744
 745         return 0;
 746 }
 747
 748 /******************************************************************************
 749  *
 750  *  ioctl_input
 751  *
 752  *  V4L2 input get/set/enumerate
 753  *
 754  *****************************************************************************/
 755
 756 static int ioctl_input(unsigned int ioclt_nr,void *arg,struct camera_data *cam)
 757 {
 758         struct v4l2_input *i = arg;
 759
 760         if(ioclt_nr  != VIDIOC_G_INPUT) {
 761                 if (i->index != 0)
 762                        return -EINVAL;
 763         }
 764
 765         memset(i, 0, sizeof(*i));
 766         strcpy(i->name, "Camera");
 767         i->type = V4L2_INPUT_TYPE_CAMERA;
 768
 769         return 0;
 770 }
 771
 772 /******************************************************************************
 773  *
 774  *  ioctl_enum_fmt
 775  *
 776  *  V4L2 format enumerate
 777  *
 778  *****************************************************************************/
 779
 780 static int ioctl_enum_fmt(void *arg,struct camera_data *cam)
 781 {
 782         struct v4l2_fmtdesc *f = arg;
 783         int index = f->index;
 784
 785         if (index < 0 || index > 1)
 786                return -EINVAL;
 787
 788         memset(f, 0, sizeof(*f));
 789         f->index = index;
 790         f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 791         f->flags = V4L2_FMT_FLAG_COMPRESSED;
 792         switch(index) {
 793         case 0:
 794                 strcpy(f->description, "MJPEG");
 795                 f->pixelformat = V4L2_PIX_FMT_MJPEG;
 796                 break;
 797         case 1:
 798                 strcpy(f->description, "JPEG");
 799                 f->pixelformat = V4L2_PIX_FMT_JPEG;
 800                 break;
 801         default:
 802                 return -EINVAL;
 803         }
 804
 805         return 0;
 806 }
 807
 808 /******************************************************************************
 809  *
 810  *  ioctl_try_fmt
 811  *
 812  *  V4L2 format try
 813  *
 814  *****************************************************************************/
 815
 816 static int ioctl_try_fmt(void *arg,struct camera_data *cam)
 817 {
 818         struct v4l2_format *f = arg;
 819
 820         if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 821                return -EINVAL;
 822
 823         if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_MJPEG &&
 824             f->fmt.pix.pixelformat != V4L2_PIX_FMT_JPEG)
 825                return -EINVAL;
 826
 827         f->fmt.pix.field = V4L2_FIELD_NONE;
 828         f->fmt.pix.bytesperline = 0;
 829         f->fmt.pix.sizeimage = cam->frame_size;
 830         f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
 831         f->fmt.pix.priv = 0;
 832
 833         switch (cpia2_match_video_size(f->fmt.pix.width, f->fmt.pix.height)) {
 834         case VIDEOSIZE_VGA:
 835                 f->fmt.pix.width = 640;
 836                 f->fmt.pix.height = 480;
 837                 break;
 838         case VIDEOSIZE_CIF:
 839                 f->fmt.pix.width = 352;
 840                 f->fmt.pix.height = 288;
 841                 break;
 842         case VIDEOSIZE_QVGA:
 843                 f->fmt.pix.width = 320;
 844                 f->fmt.pix.height = 240;
 845                 break;
 846         case VIDEOSIZE_288_216:
 847                 f->fmt.pix.width = 288;
 848                 f->fmt.pix.height = 216;
 849                 break;
 850         case VIDEOSIZE_256_192:
 851                 f->fmt.pix.width = 256;
 852                 f->fmt.pix.height = 192;
 853                 break;
 854         case VIDEOSIZE_224_168:
 855                 f->fmt.pix.width = 224;
 856                 f->fmt.pix.height = 168;
 857                 break;
 858         case VIDEOSIZE_192_144:
 859                 f->fmt.pix.width = 192;
 860                 f->fmt.pix.height = 144;
 861                 break;
 862         case VIDEOSIZE_QCIF:
 863         default:
 864                 f->fmt.pix.width = 176;
 865                 f->fmt.pix.height = 144;
 866                 break;
 867         }
 868
 869         return 0;
 870 }
 871
 872 /******************************************************************************
 873  *
 874  *  ioctl_set_fmt
 875  *
 876  *  V4L2 format set
 877  *
 878  *****************************************************************************/
 879
 880 static int ioctl_set_fmt(void *arg,struct camera_data *cam, struct cpia2_fh *fh)
 881 {
 882         struct v4l2_format *f = arg;
 883         int err, frame;
 884
 885         err = ioctl_try_fmt(arg, cam);
 886         if(err != 0)
 887                 return err;
 888
 889         /* Ensure that only this process can change the format. */
 890         err = v4l2_prio_change(&cam->prio, &fh->prio, V4L2_PRIORITY_RECORD);
 891         if(err != 0) {
 892                 return err;
 893         }
 894
 895         cam->pixelformat = f->fmt.pix.pixelformat;
 896
 897         /* NOTE: This should be set to 1 for MJPEG, but some apps don't handle
 898          * the missing Huffman table properly. */
 899         cam->params.compression.inhibit_htables = 0;
 900                 /*f->fmt.pix.pixelformat == V4L2_PIX_FMT_MJPEG;*/
 901
 902         /* we set the video window to something smaller or equal to what
 903          * is requested by the user???
 904          */
 905         DBG("Requested width = %d, height = %d\n",
 906             f->fmt.pix.width, f->fmt.pix.height);
 907         if (f->fmt.pix.width != cam->vw.width ||
 908             f->fmt.pix.height != cam->vw.height) {
 909                 cam->vw.width = f->fmt.pix.width;
 910                 cam->vw.height = f->fmt.pix.height;
 911                 cam->params.roi.width = f->fmt.pix.width;
 912                 cam->params.roi.height = f->fmt.pix.height;
 913                 cpia2_set_format(cam);
 914         }
 915
 916         for (frame = 0; frame < cam->num_frames; ++frame) {
 917                 if (cam->buffers[frame].status == FRAME_READING)
 918                         if ((err = sync(cam, frame)) < 0)
 919                                 return err;
 920
 921                 cam->buffers[frame].status = FRAME_EMPTY;
 922         }
 923
 924         return 0;
 925 }
 926
 927 /******************************************************************************
 928  *
 929  *  ioctl_get_fmt
 930  *
 931  *  V4L2 format get
 932  *
 933  *****************************************************************************/
 934
 935 static int ioctl_get_fmt(void *arg,struct camera_data *cam)
 936 {
 937         struct v4l2_format *f = arg;
 938
 939         if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 940                return -EINVAL;
 941
 942         f->fmt.pix.width = cam->vw.width;
 943         f->fmt.pix.height = cam->vw.height;
 944         f->fmt.pix.pixelformat = cam->pixelformat;
 945         f->fmt.pix.field = V4L2_FIELD_NONE;
 946         f->fmt.pix.bytesperline = 0;
 947         f->fmt.pix.sizeimage = cam->frame_size;
 948         f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
 949         f->fmt.pix.priv = 0;
 950
 951         return 0;
 952 }
 953
 954 /******************************************************************************
 955  *
 956  *  ioctl_cropcap
 957  *
 958  *  V4L2 query cropping capabilities
 959  *  NOTE: cropping is currently disabled
 960  *
 961  *****************************************************************************/
 962
 963 static int ioctl_cropcap(void *arg,struct camera_data *cam)
 964 {
 965         struct v4l2_cropcap *c = arg;
 966
 967         if (c->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 968                return -EINVAL;
 969
 970         c->bounds.left = 0;
 971         c->bounds.top = 0;
 972         c->bounds.width = cam->vw.width;
 973         c->bounds.height = cam->vw.height;
 974         c->defrect.left = 0;
 975         c->defrect.top = 0;
 976         c->defrect.width = cam->vw.width;
 977         c->defrect.height = cam->vw.height;
 978         c->pixelaspect.numerator = 1;
 979         c->pixelaspect.denominator = 1;
 980
 981         return 0;
 982 }
 983
 984 /******************************************************************************
 985  *
 986  *  ioctl_queryctrl
 987  *
 988  *  V4L2 query possible control variables
 989  *
 990  *****************************************************************************/
 991
 992 static int ioctl_queryctrl(void *arg,struct camera_data *cam)
 993 {
 994         struct v4l2_queryctrl *c = arg;
 995         int i;
 996
 997         for(i=0; i<NUM_CONTROLS; ++i) {
 998                 if(c->id == controls[i].id) {
 999                         memcpy(c, controls+i, sizeof(*c));
1000                         break;
1001                 }
1002         }
1003
1004         if(i == NUM_CONTROLS)
1005                 return -EINVAL;
1006
1007         /* Some devices have additional limitations */
1008         switch(c->id) {
1009         case V4L2_CID_BRIGHTNESS:
1010                 /***
1011                  * Don't let the register be set to zero - bug in VP4
1012                  * flash of full brightness
1013                  ***/
1014                 if (cam->params.pnp_id.device_type == DEVICE_STV_672)
1015                         c->minimum = 1;
1016                 break;
1017         case V4L2_CID_VFLIP:
1018                 // VP5 Only
1019                 if(cam->params.pnp_id.device_type == DEVICE_STV_672)
1020                         c->flags |= V4L2_CTRL_FLAG_DISABLED;
1021                 break;
1022         case CPIA2_CID_FRAMERATE:
1023                 if(cam->params.pnp_id.device_type == DEVICE_STV_672 &&
1024                    cam->params.version.sensor_flags==CPIA2_VP_SENSOR_FLAGS_500){
1025                         // Maximum 15fps
1026                         int i;
1027                         for(i=0; i<c->maximum; ++i) {
1028                                 if(framerate_controls[i].value ==
1029                                    CPIA2_VP_FRAMERATE_15) {
1030                                         c->maximum = i;
1031                                         c->default_value = i;
1032                                 }
1033                         }
1034                 }
1035                 break;
1036         case CPIA2_CID_FLICKER_MODE:
1037                 // Flicker control only valid for 672.
1038                 if(cam->params.pnp_id.device_type != DEVICE_STV_672)
1039                         c->flags |= V4L2_CTRL_FLAG_DISABLED;
1040                 break;
1041         case CPIA2_CID_LIGHTS:
1042                 // Light control only valid for the QX5 Microscope.
1043                 if(cam->params.pnp_id.product != 0x151)
1044                         c->flags |= V4L2_CTRL_FLAG_DISABLED;
1045                 break;
1046         default:
1047                 break;
1048         }
1049
1050         return 0;
1051 }
1052
1053 /******************************************************************************
1054  *
1055  *  ioctl_querymenu
1056  *
1057  *  V4L2 query possible control variables
1058  *
1059  *****************************************************************************/
1060
1061 static int ioctl_querymenu(void *arg,struct camera_data *cam)
1062 {
1063         struct v4l2_querymenu *m = arg;
1064
1065         memset(m->name, 0, sizeof(m->name));
1066         m->reserved = 0;
1067
1068         switch(m->id) {
1069         case CPIA2_CID_FLICKER_MODE:
1070                 if(m->index < 0 || m->index >= NUM_FLICKER_CONTROLS)
1071                         return -EINVAL;
1072
1073                 strcpy(m->name, flicker_controls[m->index].name);
1074                 break;
1075         case CPIA2_CID_FRAMERATE:
1076             {
1077                 int maximum = NUM_FRAMERATE_CONTROLS - 1;
1078                 if(cam->params.pnp_id.device_type == DEVICE_STV_672 &&
1079                    cam->params.version.sensor_flags==CPIA2_VP_SENSOR_FLAGS_500){
1080                         // Maximum 15fps
1081                         int i;
1082                         for(i=0; i<maximum; ++i) {
1083                                 if(framerate_controls[i].value ==
1084                                    CPIA2_VP_FRAMERATE_15)
1085                                         maximum = i;
1086                         }
1087                 }
1088                 if(m->index < 0 || m->index > maximum)
1089                         return -EINVAL;
1090
1091                 strcpy(m->name, framerate_controls[m->index].name);
1092                 break;
1093             }
1094         case CPIA2_CID_LIGHTS:
1095                 if(m->index < 0 || m->index >= NUM_LIGHTS_CONTROLS)
1096                         return -EINVAL;
1097
1098                 strcpy(m->name, lights_controls[m->index].name);
1099                 break;
1100         default:
1101                 return -EINVAL;
1102         }
1103
1104         return 0;
1105 }
1106
1107 /******************************************************************************
1108  *
1109  *  ioctl_g_ctrl
1110  *
1111  *  V4L2 get the value of a control variable
1112  *
1113  *****************************************************************************/
1114
1115 static int ioctl_g_ctrl(void *arg,struct camera_data *cam)
1116 {
1117         struct v4l2_control *c = arg;
1118
1119         switch(c->id) {
1120         case V4L2_CID_BRIGHTNESS:
1121                 cpia2_do_command(cam, CPIA2_CMD_GET_VP_BRIGHTNESS,
1122                                  TRANSFER_READ, 0);
1123                 c->value = cam->params.color_params.brightness;
1124                 break;
1125         case V4L2_CID_CONTRAST:
1126                 cpia2_do_command(cam, CPIA2_CMD_GET_CONTRAST,
1127                                  TRANSFER_READ, 0);
1128                 c->value = cam->params.color_params.contrast;
1129                 break;
1130         case V4L2_CID_SATURATION:
1131                 cpia2_do_command(cam, CPIA2_CMD_GET_VP_SATURATION,
1132                                  TRANSFER_READ, 0);
1133                 c->value = cam->params.color_params.saturation;
1134                 break;
1135         case V4L2_CID_HFLIP:
1136                 cpia2_do_command(cam, CPIA2_CMD_GET_USER_EFFECTS,
1137                                  TRANSFER_READ, 0);
1138                 c->value = (cam->params.vp_params.user_effects &
1139                             CPIA2_VP_USER_EFFECTS_MIRROR) != 0;
1140                 break;
1141         case V4L2_CID_VFLIP:
1142                 cpia2_do_command(cam, CPIA2_CMD_GET_USER_EFFECTS,
1143                                  TRANSFER_READ, 0);
1144                 c->value = (cam->params.vp_params.user_effects &
1145                             CPIA2_VP_USER_EFFECTS_FLIP) != 0;
1146                 break;
1147         case CPIA2_CID_TARGET_KB:
1148                 c->value = cam->params.vc_params.target_kb;
1149                 break;
1150         case CPIA2_CID_GPIO:
1151                 cpia2_do_command(cam, CPIA2_CMD_GET_VP_GPIO_DATA,
1152                                  TRANSFER_READ, 0);
1153                 c->value = cam->params.vp_params.gpio_data;
1154                 break;
1155         case CPIA2_CID_FLICKER_MODE:
1156         {
1157                 int i, mode;
1158                 cpia2_do_command(cam, CPIA2_CMD_GET_FLICKER_MODES,
1159                                  TRANSFER_READ, 0);
1160                 if(cam->params.flicker_control.cam_register &
1161                    CPIA2_VP_FLICKER_MODES_NEVER_FLICKER) {
1162                         mode = NEVER_FLICKER;
1163                 } else {
1164                     if(cam->params.flicker_control.cam_register &
1165                        CPIA2_VP_FLICKER_MODES_50HZ) {
1166                         mode = FLICKER_50;
1167                     } else {
1168                         mode = FLICKER_60;
1169                     }
1170                 }
1171                 for(i=0; i<NUM_FLICKER_CONTROLS; i++) {
1172                         if(flicker_controls[i].value == mode) {
1173                                 c->value = i;
1174                                 break;
1175                         }
1176                 }
1177                 if(i == NUM_FLICKER_CONTROLS)
1178                         return -EINVAL;
1179                 break;
1180         }
1181         case CPIA2_CID_FRAMERATE:
1182         {
1183                 int maximum = NUM_FRAMERATE_CONTROLS - 1;
1184                 int i;
1185                 for(i=0; i<= maximum; i++) {
1186                         if(cam->params.vp_params.frame_rate ==
1187                            framerate_controls[i].value)
1188                                 break;
1189                 }
1190                 if(i > maximum)
1191                         return -EINVAL;
1192                 c->value = i;
1193                 break;
1194         }
1195         case CPIA2_CID_USB_ALT:
1196                 c->value = cam->params.camera_state.stream_mode;
1197                 break;
1198         case CPIA2_CID_LIGHTS:
1199         {
1200                 int i;
1201                 cpia2_do_command(cam, CPIA2_CMD_GET_VP_GPIO_DATA,
1202                                  TRANSFER_READ, 0);
1203                 for(i=0; i<NUM_LIGHTS_CONTROLS; i++) {
1204                         if((cam->params.vp_params.gpio_data&GPIO_LIGHTS_MASK) ==
1205                            lights_controls[i].value) {
1206                                 break;
1207                         }
1208                 }
1209                 if(i == NUM_LIGHTS_CONTROLS)
1210                         return -EINVAL;
1211                 c->value = i;
1212                 break;
1213         }
1214         case CPIA2_CID_RESET_CAMERA:
1215                 return -EINVAL;
1216         default:
1217                 return -EINVAL;
1218         }
1219
1220         DBG("Get control id:%d, value:%d\n", c->id, c->value);
1221
1222         return 0;
1223 }
1224
1225 /******************************************************************************
1226  *
1227  *  ioctl_s_ctrl
1228  *
1229  *  V4L2 set the value of a control variable
1230  *
1231  *****************************************************************************/
1232
1233 static int ioctl_s_ctrl(void *arg,struct camera_data *cam)
1234 {
1235         struct v4l2_control *c = arg;
1236         int i;
1237         int retval = 0;
1238
1239         DBG("Set control id:%d, value:%d\n", c->id, c->value);
1240
1241         /* Check that the value is in range */
1242         for(i=0; i<NUM_CONTROLS; i++) {
1243                 if(c->id == controls[i].id) {
1244                         if(c->value < controls[i].minimum ||
1245                            c->value > controls[i].maximum) {
1246                                 return -EINVAL;
1247                         }
1248                         break;
1249                 }
1250         }
1251         if(i == NUM_CONTROLS)
1252                 return -EINVAL;
1253
1254         switch(c->id) {
1255         case V4L2_CID_BRIGHTNESS:
1256                 cpia2_set_brightness(cam, c->value);
1257                 break;
1258         case V4L2_CID_CONTRAST:
1259                 cpia2_set_contrast(cam, c->value);
1260                 break;
1261         case V4L2_CID_SATURATION:
1262                 cpia2_set_saturation(cam, c->value);
1263                 break;
1264         case V4L2_CID_HFLIP:
1265                 cpia2_set_property_mirror(cam, c->value);
1266                 break;
1267         case V4L2_CID_VFLIP:
1268                 cpia2_set_property_flip(cam, c->value);
1269                 break;
1270         case CPIA2_CID_TARGET_KB:
1271                 retval = cpia2_set_target_kb(cam, c->value);
1272                 break;
1273         case CPIA2_CID_GPIO:
1274                 retval = cpia2_set_gpio(cam, c->value);
1275                 break;
1276         case CPIA2_CID_FLICKER_MODE:
1277                 retval = cpia2_set_flicker_mode(cam,
1278                                               flicker_controls[c->value].value);
1279                 break;
1280         case CPIA2_CID_FRAMERATE:
1281                 retval = cpia2_set_fps(cam, framerate_controls[c->value].value);
1282                 break;
1283         case CPIA2_CID_USB_ALT:
1284                 retval = cpia2_usb_change_streaming_alternate(cam, c->value);
1285                 break;
1286         case CPIA2_CID_LIGHTS:
1287                 retval = cpia2_set_gpio(cam, lights_controls[c->value].value);
1288                 break;
1289         case CPIA2_CID_RESET_CAMERA:
1290                 cpia2_usb_stream_pause(cam);
1291                 cpia2_reset_camera(cam);
1292                 cpia2_usb_stream_resume(cam);
1293                 break;
1294         default:
1295                 retval = -EINVAL;
1296         }
1297
1298         return retval;
1299 }
1300
1301 /******************************************************************************
1302  *
1303  *  ioctl_g_jpegcomp
1304  *
1305  *  V4L2 get the JPEG compression parameters
1306  *
1307  *****************************************************************************/
1308
1309 static int ioctl_g_jpegcomp(void *arg,struct camera_data *cam)
1310 {
1311         struct v4l2_jpegcompression *parms = arg;
1312
1313         memset(parms, 0, sizeof(*parms));
1314
1315         parms->quality = 80; // TODO: Can this be made meaningful?
1316
1317         parms->jpeg_markers = V4L2_JPEG_MARKER_DQT | V4L2_JPEG_MARKER_DRI;
1318         if(!cam->params.compression.inhibit_htables) {
1319                 parms->jpeg_markers |= V4L2_JPEG_MARKER_DHT;
1320         }
1321
1322         parms->APPn = cam->APPn;
1323         parms->APP_len = cam->APP_len;
1324         if(cam->APP_len > 0) {
1325                 memcpy(parms->APP_data, cam->APP_data, cam->APP_len);
1326                 parms->jpeg_markers |= V4L2_JPEG_MARKER_APP;
1327         }
1328
1329         parms->COM_len = cam->COM_len;
1330         if(cam->COM_len > 0) {
1331                 memcpy(parms->COM_data, cam->COM_data, cam->COM_len);
1332                 parms->jpeg_markers |= JPEG_MARKER_COM;
1333         }
1334
1335         DBG("G_JPEGCOMP APP_len:%d COM_len:%d\n",
1336             parms->APP_len, parms->COM_len);
1337
1338         return 0;
1339 }
1340
1341 /******************************************************************************
1342  *
1343  *  ioctl_s_jpegcomp
1344  *
1345  *  V4L2 set the JPEG compression parameters
1346  *  NOTE: quality and some jpeg_markers are ignored.
1347  *
1348  *****************************************************************************/
1349
1350 static int ioctl_s_jpegcomp(void *arg,struct camera_data *cam)
1351 {
1352         struct v4l2_jpegcompression *parms = arg;
1353
1354         DBG("S_JPEGCOMP APP_len:%d COM_len:%d\n",
1355             parms->APP_len, parms->COM_len);
1356
1357         cam->params.compression.inhibit_htables =
1358                 !(parms->jpeg_markers & V4L2_JPEG_MARKER_DHT);
1359
1360         if(parms->APP_len != 0) {
1361                 if(parms->APP_len > 0 &&
1362                    parms->APP_len <= sizeof(cam->APP_data) &&
1363                    parms->APPn >= 0 && parms->APPn <= 15) {
1364                         cam->APPn = parms->APPn;
1365                         cam->APP_len = parms->APP_len;
1366                         memcpy(cam->APP_data, parms->APP_data, parms->APP_len);
1367                 } else {
1368                         LOG("Bad APPn Params n=%d len=%d\n",
1369                             parms->APPn, parms->APP_len);
1370                         return -EINVAL;
1371                 }
1372         } else {
1373                 cam->APP_len = 0;
1374         }
1375
1376         if(parms->COM_len != 0) {
1377                 if(parms->COM_len > 0 &&
1378                    parms->COM_len <= sizeof(cam->COM_data)) {
1379                         cam->COM_len = parms->COM_len;
1380                         memcpy(cam->COM_data, parms->COM_data, parms->COM_len);
1381                 } else {
1382                         LOG("Bad COM_len=%d\n", parms->COM_len);
1383                         return -EINVAL;
1384                 }
1385         }
1386
1387         return 0;
1388 }
1389
1390 /******************************************************************************
1391  *
1392  *  ioctl_reqbufs
1393  *
1394  *  V4L2 Initiate memory mapping.
1395  *  NOTE: The user's request is ignored. For now the buffers are fixed.
1396  *
1397  *****************************************************************************/
1398
1399 static int ioctl_reqbufs(void *arg,struct camera_data *cam)
1400 {
1401         struct v4l2_requestbuffers *req = arg;
1402
1403         if(req->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1404            req->memory != V4L2_MEMORY_MMAP)
1405                 return -EINVAL;
1406
1407         DBG("REQBUFS requested:%d returning:%d\n", req->count, cam->num_frames);
1408         req->count = cam->num_frames;
1409         memset(&req->reserved, 0, sizeof(req->reserved));
1410
1411         return 0;
1412 }
1413
1414 /******************************************************************************
1415  *
1416  *  ioctl_querybuf
1417  *
1418  *  V4L2 Query memory buffer status.
1419  *
1420  *****************************************************************************/
1421
1422 static int ioctl_querybuf(void *arg,struct camera_data *cam)
1423 {
1424         struct v4l2_buffer *buf = arg;
1425
1426         if(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1427            buf->index > cam->num_frames)
1428                 return -EINVAL;
1429
1430         buf->m.offset = cam->buffers[buf->index].data - cam->frame_buffer;
1431         buf->length = cam->frame_size;
1432
1433         buf->memory = V4L2_MEMORY_MMAP;
1434
1435         if(cam->mmapped)
1436                 buf->flags = V4L2_BUF_FLAG_MAPPED;
1437         else
1438                 buf->flags = 0;
1439
1440         switch (cam->buffers[buf->index].status) {
1441         case FRAME_EMPTY:
1442         case FRAME_ERROR:
1443         case FRAME_READING:
1444                 buf->bytesused = 0;
1445                 buf->flags = V4L2_BUF_FLAG_QUEUED;
1446                 break;
1447         case FRAME_READY:
1448                 buf->bytesused = cam->buffers[buf->index].length;
1449                 buf->timestamp = cam->buffers[buf->index].timestamp;
1450                 buf->sequence = cam->buffers[buf->index].seq;
1451                 buf->flags = V4L2_BUF_FLAG_DONE;
1452                 break;
1453         }
1454
1455         DBG("QUERYBUF index:%d offset:%d flags:%d seq:%d bytesused:%d\n",
1456              buf->index, buf->m.offset, buf->flags, buf->sequence,
1457              buf->bytesused);
1458
1459         return 0;
1460 }
1461
1462 /******************************************************************************
1463  *
1464  *  ioctl_qbuf
1465  *
1466  *  V4L2 User is freeing buffer
1467  *
1468  *****************************************************************************/
1469
1470 static int ioctl_qbuf(void *arg,struct camera_data *cam)
1471 {
1472         struct v4l2_buffer *buf = arg;
1473
1474         if(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1475            buf->memory != V4L2_MEMORY_MMAP ||
1476            buf->index > cam->num_frames)
1477                 return -EINVAL;
1478
1479         DBG("QBUF #%d\n", buf->index);
1480
1481         if(cam->buffers[buf->index].status == FRAME_READY)
1482                 cam->buffers[buf->index].status = FRAME_EMPTY;
1483
1484         return 0;
1485 }
1486
1487 /******************************************************************************
1488  *
1489  *  find_earliest_filled_buffer
1490  *
1491  *  Helper for ioctl_dqbuf. Find the next ready buffer.
1492  *
1493  *****************************************************************************/
1494
1495 static int find_earliest_filled_buffer(struct camera_data *cam)
1496 {
1497         int i;
1498         int found = -1;
1499         for (i=0; i<cam->num_frames; i++) {
1500                 if(cam->buffers[i].status == FRAME_READY) {
1501                         if(found < 0) {
1502                                 found = i;
1503                         } else {
1504                                 /* find which buffer is earlier */
1505                                 struct timeval *tv1, *tv2;
1506                                 tv1 = &cam->buffers[i].timestamp;
1507                                 tv2 = &cam->buffers[found].timestamp;
1508                                 if(tv1->tv_sec < tv2->tv_sec ||
1509                                    (tv1->tv_sec == tv2->tv_sec &&
1510                                     tv1->tv_usec < tv2->tv_usec))
1511                                         found = i;
1512                         }
1513                 }
1514         }
1515         return found;
1516 }
1517
1518 /******************************************************************************
1519  *
1520  *  ioctl_dqbuf
1521  *
1522  *  V4L2 User is asking for a filled buffer.
1523  *
1524  *****************************************************************************/
1525
1526 static int ioctl_dqbuf(void *arg,struct camera_data *cam, struct file *file)
1527 {
1528         struct v4l2_buffer *buf = arg;
1529         int frame;
1530
1531         if(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1532            buf->memory != V4L2_MEMORY_MMAP)
1533                 return -EINVAL;
1534
1535         frame = find_earliest_filled_buffer(cam);
1536
1537         if(frame < 0 && file->f_flags&O_NONBLOCK)
1538                 return -EAGAIN;
1539
1540         if(frame < 0) {
1541                 /* Wait for a frame to become available */
1542                 struct framebuf *cb=cam->curbuff;
1543                 mutex_unlock(&cam->busy_lock);
1544                 wait_event_interruptible(cam->wq_stream,
1545                                          !cam->present ||
1546                                          (cb=cam->curbuff)->status == FRAME_READY);
1547                 mutex_lock(&cam->busy_lock);
1548                 if (signal_pending(current))
1549                         return -ERESTARTSYS;
1550                 if(!cam->present)
1551                         return -ENOTTY;
1552                 frame = cb->num;
1553         }
1554
1555
1556         buf->index = frame;
1557         buf->bytesused = cam->buffers[buf->index].length;
1558         buf->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_DONE;
1559         buf->field = V4L2_FIELD_NONE;
1560         buf->timestamp = cam->buffers[buf->index].timestamp;
1561         buf->sequence = cam->buffers[buf->index].seq;
1562         buf->m.offset = cam->buffers[buf->index].data - cam->frame_buffer;
1563         buf->length = cam->frame_size;
1564         buf->input = 0;
1565         buf->reserved = 0;
1566         memset(&buf->timecode, 0, sizeof(buf->timecode));
1567
1568         DBG("DQBUF #%d status:%d seq:%d length:%d\n", buf->index,
1569             cam->buffers[buf->index].status, buf->sequence, buf->bytesused);
1570
1571         return 0;
1572 }
1573
1574 /******************************************************************************
1575  *
1576  *  cpia2_ioctl
1577  *
1578  *****************************************************************************/
1579 static int cpia2_do_ioctl(struct inode *inode, struct file *file,
1580                           unsigned int ioctl_nr, void *arg)
1581 {
1582         struct video_device *dev = video_devdata(file);
1583         struct camera_data *cam = video_get_drvdata(dev);
1584         int retval = 0;
1585
1586         if (!cam)
1587                 return -ENOTTY;
1588
1589         /* make this _really_ smp-safe */
1590         if (mutex_lock_interruptible(&cam->busy_lock))
1591                 return -ERESTARTSYS;
1592
1593         if (!cam->present) {
1594                 mutex_unlock(&cam->busy_lock);
1595                 return -ENODEV;
1596         }
1597
1598         /* Priority check */
1599         switch (ioctl_nr) {
1600         case VIDIOCSWIN:
1601         case VIDIOCMCAPTURE:
1602         case VIDIOC_S_FMT:
1603         {
1604                 struct cpia2_fh *fh = file->private_data;
1605                 retval = v4l2_prio_check(&cam->prio, &fh->prio);
1606                 if(retval) {
1607                         mutex_unlock(&cam->busy_lock);
1608                         return retval;
1609                 }
1610                 break;
1611         }
1612         case VIDIOCGMBUF:
1613         case VIDIOCSYNC:
1614         {
1615                 struct cpia2_fh *fh = file->private_data;
1616                 if(fh->prio != V4L2_PRIORITY_RECORD) {
1617                         mutex_unlock(&cam->busy_lock);
1618                         return -EBUSY;
1619                 }
1620                 break;
1621         }
1622         default:
1623                 break;
1624         }
1625
1626         switch (ioctl_nr) {
1627         case VIDIOCGCAP:        /* query capabilities */
1628                 retval = ioctl_cap_query(arg, cam);
1629                 break;
1630
1631         case VIDIOCGCHAN:       /* get video source - we are a camera, nothing else */
1632                 retval = ioctl_get_channel(arg);
1633                 break;
1634         case VIDIOCSCHAN:       /* set video source - we are a camera, nothing else */
1635                 retval = ioctl_set_channel(arg);
1636                 break;
1637         case VIDIOCGPICT:       /* image properties */
1638                 memcpy(arg, &cam->vp, sizeof(struct video_picture));
1639                 break;
1640         case VIDIOCSPICT:
1641                 retval = ioctl_set_image_prop(arg, cam);
1642                 break;
1643         case VIDIOCGWIN:        /* get/set capture window */
1644                 memcpy(arg, &cam->vw, sizeof(struct video_window));
1645                 break;
1646         case VIDIOCSWIN:
1647                 retval = ioctl_set_window_size(arg, cam, file->private_data);
1648                 break;
1649         case VIDIOCGMBUF:       /* mmap interface */
1650                 retval = ioctl_get_mbuf(arg, cam);
1651                 break;
1652         case VIDIOCMCAPTURE:
1653                 retval = ioctl_mcapture(arg, cam, file->private_data);
1654                 break;
1655         case VIDIOCSYNC:
1656                 retval = ioctl_sync(arg, cam);
1657                 break;
1658                 /* pointless to implement overlay with this camera */
1659         case VIDIOCCAPTURE:
1660         case VIDIOCGFBUF:
1661         case VIDIOCSFBUF:
1662         case VIDIOCKEY:
1663                 retval = -EINVAL;
1664                 break;
1665
1666                 /* tuner interface - we have none */
1667         case VIDIOCGTUNER:
1668         case VIDIOCSTUNER:
1669         case VIDIOCGFREQ:
1670         case VIDIOCSFREQ:
1671                 retval = -EINVAL;
1672                 break;
1673
1674                 /* audio interface - we have none */
1675         case VIDIOCGAUDIO:
1676         case VIDIOCSAUDIO:
1677                 retval = -EINVAL;
1678                 break;
1679
1680         /* CPIA2 extension to Video4Linux API */
1681         case CPIA2_IOC_SET_GPIO:
1682                 retval = ioctl_set_gpio(arg, cam);
1683                 break;
1684         case VIDIOC_QUERYCAP:
1685                 retval = ioctl_querycap(arg,cam);
1686                 break;
1687
1688         case VIDIOC_ENUMINPUT:
1689         case VIDIOC_G_INPUT:
1690         case VIDIOC_S_INPUT:
1691                 retval = ioctl_input(ioctl_nr, arg,cam);
1692                 break;
1693
1694         case VIDIOC_ENUM_FMT:
1695                 retval = ioctl_enum_fmt(arg,cam);
1696                 break;
1697         case VIDIOC_TRY_FMT:
1698                 retval = ioctl_try_fmt(arg,cam);
1699                 break;
1700         case VIDIOC_G_FMT:
1701                 retval = ioctl_get_fmt(arg,cam);
1702                 break;
1703         case VIDIOC_S_FMT:
1704                 retval = ioctl_set_fmt(arg,cam,file->private_data);
1705                 break;
1706
1707         case VIDIOC_CROPCAP:
1708                 retval = ioctl_cropcap(arg,cam);
1709                 break;
1710         case VIDIOC_G_CROP:
1711         case VIDIOC_S_CROP:
1712                 // TODO: I think cropping can be implemented - SJB
1713                 retval = -EINVAL;
1714                 break;
1715
1716         case VIDIOC_QUERYCTRL:
1717                 retval = ioctl_queryctrl(arg,cam);
1718                 break;
1719         case VIDIOC_QUERYMENU:
1720                 retval = ioctl_querymenu(arg,cam);
1721                 break;
1722         case VIDIOC_G_CTRL:
1723                 retval = ioctl_g_ctrl(arg,cam);
1724                 break;
1725         case VIDIOC_S_CTRL:
1726                 retval = ioctl_s_ctrl(arg,cam);
1727                 break;
1728
1729         case VIDIOC_G_JPEGCOMP:
1730                 retval = ioctl_g_jpegcomp(arg,cam);
1731                 break;
1732         case VIDIOC_S_JPEGCOMP:
1733                 retval = ioctl_s_jpegcomp(arg,cam);
1734                 break;
1735
1736         case VIDIOC_G_PRIORITY:
1737         {
1738                 struct cpia2_fh *fh = file->private_data;
1739                 *(enum v4l2_priority*)arg = fh->prio;
1740                 break;
1741         }
1742         case VIDIOC_S_PRIORITY:
1743         {
1744                 struct cpia2_fh *fh = file->private_data;
1745                 enum v4l2_priority prio;
1746                 prio = *(enum v4l2_priority*)arg;
1747                 if(cam->streaming &&
1748                    prio != fh->prio &&
1749                    fh->prio == V4L2_PRIORITY_RECORD) {
1750                         /* Can't drop record priority while streaming */
1751                         retval = -EBUSY;
1752                 } else if(prio == V4L2_PRIORITY_RECORD &&
1753                    prio != fh->prio &&
1754                    v4l2_prio_max(&cam->prio) == V4L2_PRIORITY_RECORD) {
1755                         /* Only one program can record at a time */
1756                         retval = -EBUSY;
1757                 } else {
1758                         retval = v4l2_prio_change(&cam->prio, &fh->prio, prio);
1759                 }
1760                 break;
1761         }
1762
1763         case VIDIOC_REQBUFS:
1764                 retval = ioctl_reqbufs(arg,cam);
1765                 break;
1766         case VIDIOC_QUERYBUF:
1767                 retval = ioctl_querybuf(arg,cam);
1768                 break;
1769         case VIDIOC_QBUF:
1770                 retval = ioctl_qbuf(arg,cam);
1771                 break;
1772         case VIDIOC_DQBUF:
1773                 retval = ioctl_dqbuf(arg,cam,file);
1774                 break;
1775         case VIDIOC_STREAMON:
1776         {
1777                 int type;
1778                 DBG("VIDIOC_STREAMON, streaming=%d\n", cam->streaming);
1779                 type = *(int*)arg;
1780                 if(!cam->mmapped || type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1781                         retval = -EINVAL;
1782
1783                 if(!cam->streaming) {
1784                         retval = cpia2_usb_stream_start(cam,
1785                                           cam->params.camera_state.stream_mode);
1786                 } else {
1787                         retval = -EINVAL;
1788                 }
1789
1790                 break;
1791         }
1792         case VIDIOC_STREAMOFF:
1793         {
1794                 int type;
1795                 DBG("VIDIOC_STREAMOFF, streaming=%d\n", cam->streaming);
1796                 type = *(int*)arg;
1797                 if(!cam->mmapped || type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1798                         retval = -EINVAL;
1799
1800                 if(cam->streaming) {
1801                         retval = cpia2_usb_stream_stop(cam);
1802                 } else {
1803                         retval = -EINVAL;
1804                 }
1805
1806                 break;
1807         }
1808
1809         case VIDIOC_ENUMOUTPUT:
1810         case VIDIOC_G_OUTPUT:
1811         case VIDIOC_S_OUTPUT:
1812         case VIDIOC_G_MODULATOR:
1813         case VIDIOC_S_MODULATOR:
1814
1815         case VIDIOC_ENUMAUDIO:
1816         case VIDIOC_G_AUDIO:
1817         case VIDIOC_S_AUDIO:
1818
1819         case VIDIOC_ENUMAUDOUT:
1820         case VIDIOC_G_AUDOUT:
1821         case VIDIOC_S_AUDOUT:
1822
1823         case VIDIOC_ENUMSTD:
1824         case VIDIOC_QUERYSTD:
1825         case VIDIOC_G_STD:
1826         case VIDIOC_S_STD:
1827
1828         case VIDIOC_G_TUNER:
1829         case VIDIOC_S_TUNER:
1830         case VIDIOC_G_FREQUENCY:
1831         case VIDIOC_S_FREQUENCY:
1832
1833         case VIDIOC_OVERLAY:
1834         case VIDIOC_G_FBUF:
1835         case VIDIOC_S_FBUF:
1836
1837         case VIDIOC_G_PARM:
1838         case VIDIOC_S_PARM:
1839                 retval = -EINVAL;
1840                 break;
1841         default:
1842                 retval = -ENOIOCTLCMD;
1843                 break;
1844         }
1845
1846         mutex_unlock(&cam->busy_lock);
1847         return retval;
1848 }
1849
1850 static int cpia2_ioctl(struct inode *inode, struct file *file,
1851                        unsigned int ioctl_nr, unsigned long iarg)
1852 {
1853         return video_usercopy(inode, file, ioctl_nr, iarg, cpia2_do_ioctl);
1854 }
1855
1856 /******************************************************************************
1857  *
1858  *  cpia2_mmap
1859  *
1860  *****************************************************************************/
1861 static int cpia2_mmap(struct file *file, struct vm_area_struct *area)
1862 {
1863         int retval;
1864         struct video_device *dev = video_devdata(file);
1865         struct camera_data *cam = video_get_drvdata(dev);
1866
1867         /* Priority check */
1868         struct cpia2_fh *fh = file->private_data;
1869         if(fh->prio != V4L2_PRIORITY_RECORD) {
1870                 return -EBUSY;
1871         }
1872
1873         retval = cpia2_remap_buffer(cam, area);
1874
1875         if(!retval)
1876                 fh->mmapped = 1;
1877         return retval;
1878 }
1879
1880 /******************************************************************************
1881  *
1882  *  reset_camera_struct_v4l
1883  *
1884  *  Sets all values to the defaults
1885  *****************************************************************************/
1886 static void reset_camera_struct_v4l(struct camera_data *cam)
1887 {
1888         /***
1889          * Fill in the v4l structures.  video_cap is filled in inside the VIDIOCCAP
1890          * Ioctl.  Here, just do the window and picture stucts.
1891          ***/
1892         cam->vp.palette = (u16) VIDEO_PALETTE_RGB24;    /* Is this right? */
1893         cam->vp.brightness = (u16) cam->params.color_params.brightness * 256;
1894         cam->vp.colour = (u16) cam->params.color_params.saturation * 256;
1895         cam->vp.contrast = (u16) cam->params.color_params.contrast * 256;
1896
1897         cam->vw.x = 0;
1898         cam->vw.y = 0;
1899         cam->vw.width = cam->params.roi.width;
1900         cam->vw.height = cam->params.roi.height;
1901         cam->vw.flags = 0;
1902         cam->vw.clipcount = 0;
1903
1904         cam->frame_size = buffer_size;
1905         cam->num_frames = num_buffers;
1906
1907         /* FlickerModes */
1908         cam->params.flicker_control.flicker_mode_req = flicker_mode;
1909         cam->params.flicker_control.mains_frequency = flicker_freq;
1910
1911         /* streamMode */
1912         cam->params.camera_state.stream_mode = alternate;
1913
1914         cam->pixelformat = V4L2_PIX_FMT_JPEG;
1915         v4l2_prio_init(&cam->prio);
1916         return;
1917 }
1918
1919 /***
1920  * The v4l video device structure initialized for this device
1921  ***/
1922 static const struct file_operations fops_template = {
1923         .owner          = THIS_MODULE,
1924         .open           = cpia2_open,
1925         .release        = cpia2_close,
1926         .read           = cpia2_v4l_read,
1927         .poll           = cpia2_v4l_poll,
1928         .ioctl          = cpia2_ioctl,
1929         .llseek         = no_llseek,
1930         .compat_ioctl   = v4l_compat_ioctl32,
1931         .mmap           = cpia2_mmap,
1932 };
1933
1934 static struct video_device cpia2_template = {
1935         /* I could not find any place for the old .initialize initializer?? */
1936         .owner=         THIS_MODULE,
1937         .name=          "CPiA2 Camera",
1938         .type=          VID_TYPE_CAPTURE,
1939         .type2 =        V4L2_CAP_VIDEO_CAPTURE |
1940                         V4L2_CAP_STREAMING,
1941         .minor=         -1,
1942         .fops=          &fops_template,
1943         .release=       video_device_release,
1944 };
1945
1946 /******************************************************************************
1947  *
1948  *  cpia2_register_camera
1949  *
1950  *****************************************************************************/
1951 int cpia2_register_camera(struct camera_data *cam)
1952 {
1953         cam->vdev = video_device_alloc();
1954         if(!cam->vdev)
1955                 return -ENOMEM;
1956
1957         memcpy(cam->vdev, &cpia2_template, sizeof(cpia2_template));
1958         video_set_drvdata(cam->vdev, cam);
1959
1960         reset_camera_struct_v4l(cam);
1961
1962         /* register v4l device */
1963         if (video_register_device
1964             (cam->vdev, VFL_TYPE_GRABBER, video_nr) == -1) {
1965                 ERR("video_register_device failed\n");
1966                 video_device_release(cam->vdev);
1967                 return -ENODEV;
1968         }
1969
1970         return 0;
1971 }
1972
1973 /******************************************************************************
1974  *
1975  *  cpia2_unregister_camera
1976  *
1977  *****************************************************************************/
1978 void cpia2_unregister_camera(struct camera_data *cam)
1979 {
1980         if (!cam->open_count) {
1981                 video_unregister_device(cam->vdev);
1982         } else {
1983                 LOG("/dev/video%d removed while open, "
1984                     "deferring video_unregister_device\n",
1985                     cam->vdev->minor);
1986         }
1987 }
1988
1989 /******************************************************************************
1990  *
1991  *  check_parameters
1992  *
1993  *  Make sure that all user-supplied parameters are sensible
1994  *****************************************************************************/
1995 static void __init check_parameters(void)
1996 {
1997         if(buffer_size < PAGE_SIZE) {
1998                 buffer_size = PAGE_SIZE;
1999                 LOG("buffer_size too small, setting to %d\n", buffer_size);
2000         } else if(buffer_size > 1024*1024) {
2001                 /* arbitrary upper limiit */
2002                 buffer_size = 1024*1024;
2003                 LOG("buffer_size ridiculously large, setting to %d\n",
2004                     buffer_size);
2005         } else {
2006                 buffer_size += PAGE_SIZE-1;
2007                 buffer_size &= ~(PAGE_SIZE-1);
2008         }
2009
2010         if(num_buffers < 1) {
2011                 num_buffers = 1;
2012                 LOG("num_buffers too small, setting to %d\n", num_buffers);
2013         } else if(num_buffers > VIDEO_MAX_FRAME) {
2014                 num_buffers = VIDEO_MAX_FRAME;
2015                 LOG("num_buffers too large, setting to %d\n", num_buffers);
2016         }
2017
2018         if(alternate < USBIF_ISO_1 || alternate > USBIF_ISO_6) {
2019                 alternate = DEFAULT_ALT;
2020                 LOG("alternate specified is invalid, using %d\n", alternate);
2021         }
2022
2023         if (flicker_mode != NEVER_FLICKER && flicker_mode != ANTI_FLICKER_ON) {
2024                 flicker_mode = NEVER_FLICKER;
2025                 LOG("Flicker mode specified is invalid, using %d\n",
2026                     flicker_mode);
2027         }
2028
2029         if (flicker_freq != FLICKER_50 && flicker_freq != FLICKER_60) {
2030                 flicker_freq = FLICKER_60;
2031                 LOG("Flicker mode specified is invalid, using %d\n",
2032                     flicker_freq);
2033         }
2034
2035         if(video_nr < -1 || video_nr > 64) {
2036                 video_nr = -1;
2037                 LOG("invalid video_nr specified, must be -1 to 64\n");
2038         }
2039
2040         DBG("Using %d buffers, each %d bytes, alternate=%d\n",
2041             num_buffers, buffer_size, alternate);
2042 }
2043
2044 /************   Module Stuff ***************/
2045
2046
2047 /******************************************************************************
2048  *
2049  * cpia2_init/module_init
2050  *
2051  *****************************************************************************/
2052 static int __init cpia2_init(void)
2053 {
2054         LOG("%s v%d.%d.%d\n",
2055             ABOUT, CPIA2_MAJ_VER, CPIA2_MIN_VER, CPIA2_PATCH_VER);
2056         check_parameters();
2057         cpia2_usb_init();
2058         return 0;
2059 }
2060
2061
2062 /******************************************************************************
2063  *
2064  * cpia2_exit/module_exit
2065  *
2066  *****************************************************************************/
2067 static void __exit cpia2_exit(void)
2068 {
2069         cpia2_usb_cleanup();
2070         schedule_timeout(2 * HZ);
2071 }
2072
2073 module_init(cpia2_init);
2074 module_exit(cpia2_exit);
2075