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 #include <media/v4l2-ioctl.h>
  41
  42 #include "cpia2.h"
  43 #include "cpia2dev.h"
  44
  45
  46 //#define _CPIA2_DEBUG_
  47
  48 #define MAKE_STRING_1(x)        #x
  49 #define MAKE_STRING(x)  MAKE_STRING_1(x)
  50
  51 static int video_nr = -1;
  52 module_param(video_nr, int, 0);
  53 MODULE_PARM_DESC(video_nr,"video device to register (0=/dev/video0, etc)");
  54
  55 static int buffer_size = 68*1024;
  56 module_param(buffer_size, int, 0);
  57 MODULE_PARM_DESC(buffer_size, "Size for each frame buffer in bytes (default 68k)");
  58
  59 static int num_buffers = 3;
  60 module_param(num_buffers, int, 0);
  61 MODULE_PARM_DESC(num_buffers, "Number of frame buffers (1-"
  62                  MAKE_STRING(VIDEO_MAX_FRAME) ", default 3)");
  63
  64 static int alternate = DEFAULT_ALT;
  65 module_param(alternate, int, 0);
  66 MODULE_PARM_DESC(alternate, "USB Alternate (" MAKE_STRING(USBIF_ISO_1) "-"
  67                  MAKE_STRING(USBIF_ISO_6) ", default "
  68                  MAKE_STRING(DEFAULT_ALT) ")");
  69
  70 static int flicker_freq = 60;
  71 module_param(flicker_freq, int, 0);
  72 MODULE_PARM_DESC(flicker_freq, "Flicker frequency (" MAKE_STRING(50) "or"
  73                  MAKE_STRING(60) ", default "
  74                  MAKE_STRING(60) ")");
  75
  76 static int flicker_mode = NEVER_FLICKER;
  77 module_param(flicker_mode, int, 0);
  78 MODULE_PARM_DESC(flicker_mode,
  79                  "Flicker supression (" MAKE_STRING(NEVER_FLICKER) "or"
  80                  MAKE_STRING(ANTI_FLICKER_ON) ", default "
  81                  MAKE_STRING(NEVER_FLICKER) ")");
  82
  83 MODULE_AUTHOR("Steve Miller (STMicroelectronics) <steve.miller@st.com>");
  84 MODULE_DESCRIPTION("V4L-driver for STMicroelectronics CPiA2 based cameras");
  85 MODULE_SUPPORTED_DEVICE("video");
  86 MODULE_LICENSE("GPL");
  87
  88 #define ABOUT "V4L-Driver for Vision CPiA2 based cameras"
  89
  90 struct control_menu_info {
  91         int value;
  92         char name[32];
  93 };
  94
  95 static struct control_menu_info framerate_controls[] =
  96 {
  97         { CPIA2_VP_FRAMERATE_6_25, "6.25 fps" },
  98         { CPIA2_VP_FRAMERATE_7_5,  "7.5 fps"  },
  99         { CPIA2_VP_FRAMERATE_12_5, "12.5 fps" },
 100         { CPIA2_VP_FRAMERATE_15,   "15 fps"   },
 101         { CPIA2_VP_FRAMERATE_25,   "25 fps"   },
 102         { CPIA2_VP_FRAMERATE_30,   "30 fps"   },
 103 };
 104 #define NUM_FRAMERATE_CONTROLS (ARRAY_SIZE(framerate_controls))
 105
 106 static struct control_menu_info flicker_controls[] =
 107 {
 108         { NEVER_FLICKER, "Off" },
 109         { FLICKER_50,    "50 Hz" },
 110         { FLICKER_60,    "60 Hz"  },
 111 };
 112 #define NUM_FLICKER_CONTROLS (ARRAY_SIZE(flicker_controls))
 113
 114 static struct control_menu_info lights_controls[] =
 115 {
 116         { 0,   "Off" },
 117         { 64,  "Top" },
 118         { 128, "Bottom"  },
 119         { 192, "Both"  },
 120 };
 121 #define NUM_LIGHTS_CONTROLS (ARRAY_SIZE(lights_controls))
 122 #define GPIO_LIGHTS_MASK 192
 123
 124 static struct v4l2_queryctrl controls[] = {
 125         {
 126                 .id            = V4L2_CID_BRIGHTNESS,
 127                 .type          = V4L2_CTRL_TYPE_INTEGER,
 128                 .name          = "Brightness",
 129                 .minimum       = 0,
 130                 .maximum       = 255,
 131                 .step          = 1,
 132                 .default_value = DEFAULT_BRIGHTNESS,
 133         },
 134         {
 135                 .id            = V4L2_CID_CONTRAST,
 136                 .type          = V4L2_CTRL_TYPE_INTEGER,
 137                 .name          = "Contrast",
 138                 .minimum       = 0,
 139                 .maximum       = 255,
 140                 .step          = 1,
 141                 .default_value = DEFAULT_CONTRAST,
 142         },
 143         {
 144                 .id            = V4L2_CID_SATURATION,
 145                 .type          = V4L2_CTRL_TYPE_INTEGER,
 146                 .name          = "Saturation",
 147                 .minimum       = 0,
 148                 .maximum       = 255,
 149                 .step          = 1,
 150                 .default_value = DEFAULT_SATURATION,
 151         },
 152         {
 153                 .id            = V4L2_CID_HFLIP,
 154                 .type          = V4L2_CTRL_TYPE_BOOLEAN,
 155                 .name          = "Mirror Horizontally",
 156                 .minimum       = 0,
 157                 .maximum       = 1,
 158                 .step          = 1,
 159                 .default_value = 0,
 160         },
 161         {
 162                 .id            = V4L2_CID_VFLIP,
 163                 .type          = V4L2_CTRL_TYPE_BOOLEAN,
 164                 .name          = "Flip Vertically",
 165                 .minimum       = 0,
 166                 .maximum       = 1,
 167                 .step          = 1,
 168                 .default_value = 0,
 169         },
 170         {
 171                 .id            = CPIA2_CID_TARGET_KB,
 172                 .type          = V4L2_CTRL_TYPE_INTEGER,
 173                 .name          = "Target KB",
 174                 .minimum       = 0,
 175                 .maximum       = 255,
 176                 .step          = 1,
 177                 .default_value = DEFAULT_TARGET_KB,
 178         },
 179         {
 180                 .id            = CPIA2_CID_GPIO,
 181                 .type          = V4L2_CTRL_TYPE_INTEGER,
 182                 .name          = "GPIO",
 183                 .minimum       = 0,
 184                 .maximum       = 255,
 185                 .step          = 1,
 186                 .default_value = 0,
 187         },
 188         {
 189                 .id            = CPIA2_CID_FLICKER_MODE,
 190                 .type          = V4L2_CTRL_TYPE_MENU,
 191                 .name          = "Flicker Reduction",
 192                 .minimum       = 0,
 193                 .maximum       = NUM_FLICKER_CONTROLS-1,
 194                 .step          = 1,
 195                 .default_value = 0,
 196         },
 197         {
 198                 .id            = CPIA2_CID_FRAMERATE,
 199                 .type          = V4L2_CTRL_TYPE_MENU,
 200                 .name          = "Framerate",
 201                 .minimum       = 0,
 202                 .maximum       = NUM_FRAMERATE_CONTROLS-1,
 203                 .step          = 1,
 204                 .default_value = NUM_FRAMERATE_CONTROLS-1,
 205         },
 206         {
 207                 .id            = CPIA2_CID_USB_ALT,
 208                 .type          = V4L2_CTRL_TYPE_INTEGER,
 209                 .name          = "USB Alternate",
 210                 .minimum       = USBIF_ISO_1,
 211                 .maximum       = USBIF_ISO_6,
 212                 .step          = 1,
 213                 .default_value = DEFAULT_ALT,
 214         },
 215         {
 216                 .id            = CPIA2_CID_LIGHTS,
 217                 .type          = V4L2_CTRL_TYPE_MENU,
 218                 .name          = "Lights",
 219                 .minimum       = 0,
 220                 .maximum       = NUM_LIGHTS_CONTROLS-1,
 221                 .step          = 1,
 222                 .default_value = 0,
 223         },
 224         {
 225                 .id            = CPIA2_CID_RESET_CAMERA,
 226                 .type          = V4L2_CTRL_TYPE_BUTTON,
 227                 .name          = "Reset Camera",
 228                 .minimum       = 0,
 229                 .maximum       = 0,
 230                 .step          = 0,
 231                 .default_value = 0,
 232         },
 233 };
 234 #define NUM_CONTROLS (ARRAY_SIZE(controls))
 235
 236
 237 /******************************************************************************
 238  *
 239  *  cpia2_open
 240  *
 241  *****************************************************************************/
 242 static int cpia2_open(struct inode *inode, struct file *file)
 243 {
 244         struct video_device *dev = video_devdata(file);
 245         struct camera_data *cam = video_get_drvdata(dev);
 246         int retval = 0;
 247
 248         if (!cam) {
 249                 ERR("Internal error, camera_data not found!\n");
 250                 return -ENODEV;
 251         }
 252
 253         if(mutex_lock_interruptible(&cam->busy_lock))
 254                 return -ERESTARTSYS;
 255
 256         if(!cam->present) {
 257                 retval = -ENODEV;
 258                 goto err_return;
 259         }
 260
 261         if (cam->open_count > 0) {
 262                 goto skip_init;
 263         }
 264
 265         if (cpia2_allocate_buffers(cam)) {
 266                 retval = -ENOMEM;
 267                 goto err_return;
 268         }
 269
 270         /* reset the camera */
 271         if (cpia2_reset_camera(cam) < 0) {
 272                 retval = -EIO;
 273                 goto err_return;
 274         }
 275
 276         cam->APP_len = 0;
 277         cam->COM_len = 0;
 278
 279 skip_init:
 280         {
 281                 struct cpia2_fh *fh = kmalloc(sizeof(*fh),GFP_KERNEL);
 282                 if(!fh) {
 283                         retval = -ENOMEM;
 284                         goto err_return;
 285                 }
 286                 file->private_data = fh;
 287                 fh->prio = V4L2_PRIORITY_UNSET;
 288                 v4l2_prio_open(&cam->prio, &fh->prio);
 289                 fh->mmapped = 0;
 290         }
 291
 292         ++cam->open_count;
 293
 294         cpia2_dbg_dump_registers(cam);
 295
 296 err_return:
 297         mutex_unlock(&cam->busy_lock);
 298         return retval;
 299 }
 300
 301 /******************************************************************************
 302  *
 303  *  cpia2_close
 304  *
 305  *****************************************************************************/
 306 static int cpia2_close(struct inode *inode, struct file *file)
 307 {
 308         struct video_device *dev = video_devdata(file);
 309         struct camera_data *cam = video_get_drvdata(dev);
 310         struct cpia2_fh *fh = file->private_data;
 311
 312         mutex_lock(&cam->busy_lock);
 313
 314         if (cam->present &&
 315             (cam->open_count == 1
 316              || fh->prio == V4L2_PRIORITY_RECORD
 317             )) {
 318                 cpia2_usb_stream_stop(cam);
 319
 320                 if(cam->open_count == 1) {
 321                         /* save camera state for later open */
 322                         cpia2_save_camera_state(cam);
 323
 324                         cpia2_set_low_power(cam);
 325                         cpia2_free_buffers(cam);
 326                 }
 327         }
 328
 329         {
 330                 if(fh->mmapped)
 331                         cam->mmapped = 0;
 332                 v4l2_prio_close(&cam->prio,&fh->prio);
 333                 file->private_data = NULL;
 334                 kfree(fh);
 335         }
 336
 337         if (--cam->open_count == 0) {
 338                 cpia2_free_buffers(cam);
 339                 if (!cam->present) {
 340                         video_unregister_device(dev);
 341                         mutex_unlock(&cam->busy_lock);
 342                         kfree(cam);
 343                         return 0;
 344                 }
 345         }
 346
 347         mutex_unlock(&cam->busy_lock);
 348
 349         return 0;
 350 }
 351
 352 /******************************************************************************
 353  *
 354  *  cpia2_v4l_read
 355  *
 356  *****************************************************************************/
 357 static ssize_t cpia2_v4l_read(struct file *file, char __user *buf, size_t count,
 358                               loff_t *off)
 359 {
 360         struct video_device *dev = video_devdata(file);
 361         struct camera_data *cam = video_get_drvdata(dev);
 362         int noblock = file->f_flags&O_NONBLOCK;
 363
 364         struct cpia2_fh *fh = file->private_data;
 365
 366         if(!cam)
 367                 return -EINVAL;
 368
 369         /* Priority check */
 370         if(fh->prio != V4L2_PRIORITY_RECORD) {
 371                 return -EBUSY;
 372         }
 373
 374         return cpia2_read(cam, buf, count, noblock);
 375 }
 376
 377
 378 /******************************************************************************
 379  *
 380  *  cpia2_v4l_poll
 381  *
 382  *****************************************************************************/
 383 static unsigned int cpia2_v4l_poll(struct file *filp, struct poll_table_struct *wait)
 384 {
 385         struct video_device *dev = video_devdata(filp);
 386         struct camera_data *cam = video_get_drvdata(dev);
 387
 388         struct cpia2_fh *fh = filp->private_data;
 389
 390         if(!cam)
 391                 return POLLERR;
 392
 393         /* Priority check */
 394         if(fh->prio != V4L2_PRIORITY_RECORD) {
 395                 return POLLERR;
 396         }
 397
 398         return cpia2_poll(cam, filp, wait);
 399 }
 400
 401
 402 /******************************************************************************
 403  *
 404  *  ioctl_cap_query
 405  *
 406  *****************************************************************************/
 407 static int ioctl_cap_query(void *arg, struct camera_data *cam)
 408 {
 409         struct video_capability *vc;
 410         int retval = 0;
 411         vc = arg;
 412
 413         if (cam->params.pnp_id.product == 0x151)
 414                 strcpy(vc->name, "QX5 Microscope");
 415         else
 416                 strcpy(vc->name, "CPiA2 Camera");
 417
 418         vc->type = VID_TYPE_CAPTURE | VID_TYPE_MJPEG_ENCODER;
 419         vc->channels = 1;
 420         vc->audios = 0;
 421         vc->minwidth = 176;     /* VIDEOSIZE_QCIF */
 422         vc->minheight = 144;
 423         switch (cam->params.version.sensor_flags) {
 424         case CPIA2_VP_SENSOR_FLAGS_500:
 425                 vc->maxwidth = STV_IMAGE_VGA_COLS;
 426                 vc->maxheight = STV_IMAGE_VGA_ROWS;
 427                 break;
 428         case CPIA2_VP_SENSOR_FLAGS_410:
 429                 vc->maxwidth = STV_IMAGE_CIF_COLS;
 430                 vc->maxheight = STV_IMAGE_CIF_ROWS;
 431                 break;
 432         default:
 433                 return -EINVAL;
 434         }
 435
 436         return retval;
 437 }
 438
 439 /******************************************************************************
 440  *
 441  *  ioctl_get_channel
 442  *
 443  *****************************************************************************/
 444 static int ioctl_get_channel(void *arg)
 445 {
 446         int retval = 0;
 447         struct video_channel *v;
 448         v = arg;
 449
 450         if (v->channel != 0)
 451                 return -EINVAL;
 452
 453         v->channel = 0;
 454         strcpy(v->name, "Camera");
 455         v->tuners = 0;
 456         v->flags = 0;
 457         v->type = VIDEO_TYPE_CAMERA;
 458         v->norm = 0;
 459
 460         return retval;
 461 }
 462
 463 /******************************************************************************
 464  *
 465  *  ioctl_set_channel
 466  *
 467  *****************************************************************************/
 468 static int ioctl_set_channel(void *arg)
 469 {
 470         struct video_channel *v;
 471         int retval = 0;
 472         v = arg;
 473
 474         if (retval == 0 && v->channel != 0)
 475                 retval = -EINVAL;
 476
 477         return retval;
 478 }
 479
 480 /******************************************************************************
 481  *
 482  *  ioctl_set_image_prop
 483  *
 484  *****************************************************************************/
 485 static int ioctl_set_image_prop(void *arg, struct camera_data *cam)
 486 {
 487         struct video_picture *vp;
 488         int retval = 0;
 489         vp = arg;
 490
 491         /* brightness, color, contrast need no check 0-65535 */
 492         memcpy(&cam->vp, vp, sizeof(*vp));
 493
 494         /* update cam->params.colorParams */
 495         cam->params.color_params.brightness = vp->brightness / 256;
 496         cam->params.color_params.saturation = vp->colour / 256;
 497         cam->params.color_params.contrast = vp->contrast / 256;
 498
 499         DBG("Requested params: bright 0x%X, sat 0x%X, contrast 0x%X\n",
 500             cam->params.color_params.brightness,
 501             cam->params.color_params.saturation,
 502             cam->params.color_params.contrast);
 503
 504         cpia2_set_color_params(cam);
 505
 506         return retval;
 507 }
 508
 509 static int sync(struct camera_data *cam, int frame_nr)
 510 {
 511         struct framebuf *frame = &cam->buffers[frame_nr];
 512
 513         while (1) {
 514                 if (frame->status == FRAME_READY)
 515                         return 0;
 516
 517                 if (!cam->streaming) {
 518                         frame->status = FRAME_READY;
 519                         frame->length = 0;
 520                         return 0;
 521                 }
 522
 523                 mutex_unlock(&cam->busy_lock);
 524                 wait_event_interruptible(cam->wq_stream,
 525                                          !cam->streaming ||
 526                                          frame->status == FRAME_READY);
 527                 mutex_lock(&cam->busy_lock);
 528                 if (signal_pending(current))
 529                         return -ERESTARTSYS;
 530                 if(!cam->present)
 531                         return -ENOTTY;
 532         }
 533 }
 534
 535 /******************************************************************************
 536  *
 537  *  ioctl_set_window_size
 538  *
 539  *****************************************************************************/
 540 static int ioctl_set_window_size(void *arg, struct camera_data *cam,
 541                                  struct cpia2_fh *fh)
 542 {
 543         /* copy_from_user, check validity, copy to internal structure */
 544         struct video_window *vw;
 545         int frame, err;
 546         vw = arg;
 547
 548         if (vw->clipcount != 0) /* clipping not supported */
 549                 return -EINVAL;
 550
 551         if (vw->clips != NULL)  /* clipping not supported */
 552                 return -EINVAL;
 553
 554         /* Ensure that only this process can change the format. */
 555         err = v4l2_prio_change(&cam->prio, &fh->prio, V4L2_PRIORITY_RECORD);
 556         if(err != 0)
 557                 return err;
 558
 559         cam->pixelformat = V4L2_PIX_FMT_JPEG;
 560
 561         /* Be sure to supply the Huffman tables, this isn't MJPEG */
 562         cam->params.compression.inhibit_htables = 0;
 563
 564         /* we set the video window to something smaller or equal to what
 565          * is requested by the user???
 566          */
 567         DBG("Requested width = %d, height = %d\n", vw->width, vw->height);
 568         if (vw->width != cam->vw.width || vw->height != cam->vw.height) {
 569                 cam->vw.width = vw->width;
 570                 cam->vw.height = vw->height;
 571                 cam->params.roi.width = vw->width;
 572                 cam->params.roi.height = vw->height;
 573                 cpia2_set_format(cam);
 574         }
 575
 576         for (frame = 0; frame < cam->num_frames; ++frame) {
 577                 if (cam->buffers[frame].status == FRAME_READING)
 578                         if ((err = sync(cam, frame)) < 0)
 579                                 return err;
 580
 581                 cam->buffers[frame].status = FRAME_EMPTY;
 582         }
 583
 584         return 0;
 585 }
 586
 587 /******************************************************************************
 588  *
 589  *  ioctl_get_mbuf
 590  *
 591  *****************************************************************************/
 592 static int ioctl_get_mbuf(void *arg, struct camera_data *cam)
 593 {
 594         struct video_mbuf *vm;
 595         int i;
 596         vm = arg;
 597
 598         memset(vm, 0, sizeof(*vm));
 599         vm->size = cam->frame_size*cam->num_frames;
 600         vm->frames = cam->num_frames;
 601         for (i = 0; i < cam->num_frames; i++)
 602                 vm->offsets[i] = cam->frame_size * i;
 603
 604         return 0;
 605 }
 606
 607 /******************************************************************************
 608  *
 609  *  ioctl_mcapture
 610  *
 611  *****************************************************************************/
 612 static int ioctl_mcapture(void *arg, struct camera_data *cam,
 613                           struct cpia2_fh *fh)
 614 {
 615         struct video_mmap *vm;
 616         int video_size, err;
 617         vm = arg;
 618
 619         if (vm->frame < 0 || vm->frame >= cam->num_frames)
 620                 return -EINVAL;
 621
 622         /* set video size */
 623         video_size = cpia2_match_video_size(vm->width, vm->height);
 624         if (cam->video_size < 0) {
 625                 return -EINVAL;
 626         }
 627
 628         /* Ensure that only this process can change the format. */
 629         err = v4l2_prio_change(&cam->prio, &fh->prio, V4L2_PRIORITY_RECORD);
 630         if(err != 0)
 631                 return err;
 632
 633         if (video_size != cam->video_size) {
 634                 cam->video_size = video_size;
 635                 cam->params.roi.width = vm->width;
 636                 cam->params.roi.height = vm->height;
 637                 cpia2_set_format(cam);
 638         }
 639
 640         if (cam->buffers[vm->frame].status == FRAME_READING)
 641                 if ((err=sync(cam, vm->frame)) < 0)
 642                         return err;
 643
 644         cam->buffers[vm->frame].status = FRAME_EMPTY;
 645
 646         return cpia2_usb_stream_start(cam,cam->params.camera_state.stream_mode);
 647 }
 648
 649 /******************************************************************************
 650  *
 651  *  ioctl_sync
 652  *
 653  *****************************************************************************/
 654 static int ioctl_sync(void *arg, struct camera_data *cam)
 655 {
 656         int frame;
 657
 658         frame = *(int*)arg;
 659
 660         if (frame < 0 || frame >= cam->num_frames)
 661                 return -EINVAL;
 662
 663         return sync(cam, frame);
 664 }
 665
 666
 667 /******************************************************************************
 668  *
 669  *  ioctl_set_gpio
 670  *
 671  *****************************************************************************/
 672
 673 static int ioctl_set_gpio(void *arg, struct camera_data *cam)
 674 {
 675         __u32 gpio_val;
 676
 677         gpio_val = *(__u32*) arg;
 678
 679         if (gpio_val &~ 0xFFU)
 680                 return -EINVAL;
 681
 682         return cpia2_set_gpio(cam, (unsigned char)gpio_val);
 683 }
 684
 685 /******************************************************************************
 686  *
 687  *  ioctl_querycap
 688  *
 689  *  V4L2 device capabilities
 690  *
 691  *****************************************************************************/
 692
 693 static int ioctl_querycap(void *arg, struct camera_data *cam)
 694 {
 695         struct v4l2_capability *vc = arg;
 696
 697         memset(vc, 0, sizeof(*vc));
 698         strcpy(vc->driver, "cpia2");
 699
 700         if (cam->params.pnp_id.product == 0x151)
 701                 strcpy(vc->card, "QX5 Microscope");
 702         else
 703                 strcpy(vc->card, "CPiA2 Camera");
 704         switch (cam->params.pnp_id.device_type) {
 705         case DEVICE_STV_672:
 706                 strcat(vc->card, " (672/");
 707                 break;
 708         case DEVICE_STV_676:
 709                 strcat(vc->card, " (676/");
 710                 break;
 711         default:
 712                 strcat(vc->card, " (???/");
 713                 break;
 714         }
 715         switch (cam->params.version.sensor_flags) {
 716         case CPIA2_VP_SENSOR_FLAGS_404:
 717                 strcat(vc->card, "404)");
 718                 break;
 719         case CPIA2_VP_SENSOR_FLAGS_407:
 720                 strcat(vc->card, "407)");
 721                 break;
 722         case CPIA2_VP_SENSOR_FLAGS_409:
 723                 strcat(vc->card, "409)");
 724                 break;
 725         case CPIA2_VP_SENSOR_FLAGS_410:
 726                 strcat(vc->card, "410)");
 727                 break;
 728         case CPIA2_VP_SENSOR_FLAGS_500:
 729                 strcat(vc->card, "500)");
 730                 break;
 731         default:
 732                 strcat(vc->card, "???)");
 733                 break;
 734         }
 735
 736         if (usb_make_path(cam->dev, vc->bus_info, sizeof(vc->bus_info)) <0)
 737                 memset(vc->bus_info,0, sizeof(vc->bus_info));
 738
 739         vc->version = KERNEL_VERSION(CPIA2_MAJ_VER, CPIA2_MIN_VER,
 740                                      CPIA2_PATCH_VER);
 741
 742         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
 743                            V4L2_CAP_READWRITE |
 744                            V4L2_CAP_STREAMING;
 745
 746         return 0;
 747 }
 748
 749 /******************************************************************************
 750  *
 751  *  ioctl_input
 752  *
 753  *  V4L2 input get/set/enumerate
 754  *
 755  *****************************************************************************/
 756
 757 static int ioctl_input(unsigned int ioclt_nr,void *arg,struct camera_data *cam)
 758 {
 759         struct v4l2_input *i = arg;
 760
 761         if(ioclt_nr  != VIDIOC_G_INPUT) {
 762                 if (i->index != 0)
 763                        return -EINVAL;
 764         }
 765
 766         memset(i, 0, sizeof(*i));
 767         strcpy(i->name, "Camera");
 768         i->type = V4L2_INPUT_TYPE_CAMERA;
 769
 770         return 0;
 771 }
 772
 773 /******************************************************************************
 774  *
 775  *  ioctl_enum_fmt
 776  *
 777  *  V4L2 format enumerate
 778  *
 779  *****************************************************************************/
 780
 781 static int ioctl_enum_fmt(void *arg,struct camera_data *cam)
 782 {
 783         struct v4l2_fmtdesc *f = arg;
 784         int index = f->index;
 785
 786         if (index < 0 || index > 1)
 787                return -EINVAL;
 788
 789         memset(f, 0, sizeof(*f));
 790         f->index = index;
 791         f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 792         f->flags = V4L2_FMT_FLAG_COMPRESSED;
 793         switch(index) {
 794         case 0:
 795                 strcpy(f->description, "MJPEG");
 796                 f->pixelformat = V4L2_PIX_FMT_MJPEG;
 797                 break;
 798         case 1:
 799                 strcpy(f->description, "JPEG");
 800                 f->pixelformat = V4L2_PIX_FMT_JPEG;
 801                 break;
 802         default:
 803                 return -EINVAL;
 804         }
 805
 806         return 0;
 807 }
 808
 809 /******************************************************************************
 810  *
 811  *  ioctl_try_fmt
 812  *
 813  *  V4L2 format try
 814  *
 815  *****************************************************************************/
 816
 817 static int ioctl_try_fmt(void *arg,struct camera_data *cam)
 818 {
 819         struct v4l2_format *f = arg;
 820
 821         if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 822                return -EINVAL;
 823
 824         if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_MJPEG &&
 825             f->fmt.pix.pixelformat != V4L2_PIX_FMT_JPEG)
 826                return -EINVAL;
 827
 828         f->fmt.pix.field = V4L2_FIELD_NONE;
 829         f->fmt.pix.bytesperline = 0;
 830         f->fmt.pix.sizeimage = cam->frame_size;
 831         f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
 832         f->fmt.pix.priv = 0;
 833
 834         switch (cpia2_match_video_size(f->fmt.pix.width, f->fmt.pix.height)) {
 835         case VIDEOSIZE_VGA:
 836                 f->fmt.pix.width = 640;
 837                 f->fmt.pix.height = 480;
 838                 break;
 839         case VIDEOSIZE_CIF:
 840                 f->fmt.pix.width = 352;
 841                 f->fmt.pix.height = 288;
 842                 break;
 843         case VIDEOSIZE_QVGA:
 844                 f->fmt.pix.width = 320;
 845                 f->fmt.pix.height = 240;
 846                 break;
 847         case VIDEOSIZE_288_216:
 848                 f->fmt.pix.width = 288;
 849                 f->fmt.pix.height = 216;
 850                 break;
 851         case VIDEOSIZE_256_192:
 852                 f->fmt.pix.width = 256;
 853                 f->fmt.pix.height = 192;
 854                 break;
 855         case VIDEOSIZE_224_168:
 856                 f->fmt.pix.width = 224;
 857                 f->fmt.pix.height = 168;
 858                 break;
 859         case VIDEOSIZE_192_144:
 860                 f->fmt.pix.width = 192;
 861                 f->fmt.pix.height = 144;
 862                 break;
 863         case VIDEOSIZE_QCIF:
 864         default:
 865                 f->fmt.pix.width = 176;
 866                 f->fmt.pix.height = 144;
 867                 break;
 868         }
 869
 870         return 0;
 871 }
 872
 873 /******************************************************************************
 874  *
 875  *  ioctl_set_fmt
 876  *
 877  *  V4L2 format set
 878  *
 879  *****************************************************************************/
 880
 881 static int ioctl_set_fmt(void *arg,struct camera_data *cam, struct cpia2_fh *fh)
 882 {
 883         struct v4l2_format *f = arg;
 884         int err, frame;
 885
 886         err = ioctl_try_fmt(arg, cam);
 887         if(err != 0)
 888                 return err;
 889
 890         /* Ensure that only this process can change the format. */
 891         err = v4l2_prio_change(&cam->prio, &fh->prio, V4L2_PRIORITY_RECORD);
 892         if(err != 0) {
 893                 return err;
 894         }
 895
 896         cam->pixelformat = f->fmt.pix.pixelformat;
 897
 898         /* NOTE: This should be set to 1 for MJPEG, but some apps don't handle
 899          * the missing Huffman table properly. */
 900         cam->params.compression.inhibit_htables = 0;
 901                 /*f->fmt.pix.pixelformat == V4L2_PIX_FMT_MJPEG;*/
 902
 903         /* we set the video window to something smaller or equal to what
 904          * is requested by the user???
 905          */
 906         DBG("Requested width = %d, height = %d\n",
 907             f->fmt.pix.width, f->fmt.pix.height);
 908         if (f->fmt.pix.width != cam->vw.width ||
 909             f->fmt.pix.height != cam->vw.height) {
 910                 cam->vw.width = f->fmt.pix.width;
 911                 cam->vw.height = f->fmt.pix.height;
 912                 cam->params.roi.width = f->fmt.pix.width;
 913                 cam->params.roi.height = f->fmt.pix.height;
 914                 cpia2_set_format(cam);
 915         }
 916
 917         for (frame = 0; frame < cam->num_frames; ++frame) {
 918                 if (cam->buffers[frame].status == FRAME_READING)
 919                         if ((err = sync(cam, frame)) < 0)
 920                                 return err;
 921
 922                 cam->buffers[frame].status = FRAME_EMPTY;
 923         }
 924
 925         return 0;
 926 }
 927
 928 /******************************************************************************
 929  *
 930  *  ioctl_get_fmt
 931  *
 932  *  V4L2 format get
 933  *
 934  *****************************************************************************/
 935
 936 static int ioctl_get_fmt(void *arg,struct camera_data *cam)
 937 {
 938         struct v4l2_format *f = arg;
 939
 940         if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 941                return -EINVAL;
 942
 943         f->fmt.pix.width = cam->vw.width;
 944         f->fmt.pix.height = cam->vw.height;
 945         f->fmt.pix.pixelformat = cam->pixelformat;
 946         f->fmt.pix.field = V4L2_FIELD_NONE;
 947         f->fmt.pix.bytesperline = 0;
 948         f->fmt.pix.sizeimage = cam->frame_size;
 949         f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
 950         f->fmt.pix.priv = 0;
 951
 952         return 0;
 953 }
 954
 955 /******************************************************************************
 956  *
 957  *  ioctl_cropcap
 958  *
 959  *  V4L2 query cropping capabilities
 960  *  NOTE: cropping is currently disabled
 961  *
 962  *****************************************************************************/
 963
 964 static int ioctl_cropcap(void *arg,struct camera_data *cam)
 965 {
 966         struct v4l2_cropcap *c = arg;
 967
 968         if (c->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 969                return -EINVAL;
 970
 971         c->bounds.left = 0;
 972         c->bounds.top = 0;
 973         c->bounds.width = cam->vw.width;
 974         c->bounds.height = cam->vw.height;
 975         c->defrect.left = 0;
 976         c->defrect.top = 0;
 977         c->defrect.width = cam->vw.width;
 978         c->defrect.height = cam->vw.height;
 979         c->pixelaspect.numerator = 1;
 980         c->pixelaspect.denominator = 1;
 981
 982         return 0;
 983 }
 984
 985 /******************************************************************************
 986  *
 987  *  ioctl_queryctrl
 988  *
 989  *  V4L2 query possible control variables
 990  *
 991  *****************************************************************************/
 992
 993 static int ioctl_queryctrl(void *arg,struct camera_data *cam)
 994 {
 995         struct v4l2_queryctrl *c = arg;
 996         int i;
 997
 998         for(i=0; i<NUM_CONTROLS; ++i) {
 999                 if(c->id == controls[i].id) {
1000                         memcpy(c, controls+i, sizeof(*c));
1001                         break;
1002                 }
1003         }
1004
1005         if(i == NUM_CONTROLS)
1006                 return -EINVAL;
1007
1008         /* Some devices have additional limitations */
1009         switch(c->id) {
1010         case V4L2_CID_BRIGHTNESS:
1011                 /***
1012                  * Don't let the register be set to zero - bug in VP4
1013                  * flash of full brightness
1014                  ***/
1015                 if (cam->params.pnp_id.device_type == DEVICE_STV_672)
1016                         c->minimum = 1;
1017                 break;
1018         case V4L2_CID_VFLIP:
1019                 // VP5 Only
1020                 if(cam->params.pnp_id.device_type == DEVICE_STV_672)
1021                         c->flags |= V4L2_CTRL_FLAG_DISABLED;
1022                 break;
1023         case CPIA2_CID_FRAMERATE:
1024                 if(cam->params.pnp_id.device_type == DEVICE_STV_672 &&
1025                    cam->params.version.sensor_flags==CPIA2_VP_SENSOR_FLAGS_500){
1026                         // Maximum 15fps
1027                         int i;
1028                         for(i=0; i<c->maximum; ++i) {
1029                                 if(framerate_controls[i].value ==
1030                                    CPIA2_VP_FRAMERATE_15) {
1031                                         c->maximum = i;
1032                                         c->default_value = i;
1033                                 }
1034                         }
1035                 }
1036                 break;
1037         case CPIA2_CID_FLICKER_MODE:
1038                 // Flicker control only valid for 672.
1039                 if(cam->params.pnp_id.device_type != DEVICE_STV_672)
1040                         c->flags |= V4L2_CTRL_FLAG_DISABLED;
1041                 break;
1042         case CPIA2_CID_LIGHTS:
1043                 // Light control only valid for the QX5 Microscope.
1044                 if(cam->params.pnp_id.product != 0x151)
1045                         c->flags |= V4L2_CTRL_FLAG_DISABLED;
1046                 break;
1047         default:
1048                 break;
1049         }
1050
1051         return 0;
1052 }
1053
1054 /******************************************************************************
1055  *
1056  *  ioctl_querymenu
1057  *
1058  *  V4L2 query possible control variables
1059  *
1060  *****************************************************************************/
1061
1062 static int ioctl_querymenu(void *arg,struct camera_data *cam)
1063 {
1064         struct v4l2_querymenu *m = arg;
1065
1066         memset(m->name, 0, sizeof(m->name));
1067         m->reserved = 0;
1068
1069         switch(m->id) {
1070         case CPIA2_CID_FLICKER_MODE:
1071                 if(m->index < 0 || m->index >= NUM_FLICKER_CONTROLS)
1072                         return -EINVAL;
1073
1074                 strcpy(m->name, flicker_controls[m->index].name);
1075                 break;
1076         case CPIA2_CID_FRAMERATE:
1077             {
1078                 int maximum = NUM_FRAMERATE_CONTROLS - 1;
1079                 if(cam->params.pnp_id.device_type == DEVICE_STV_672 &&
1080                    cam->params.version.sensor_flags==CPIA2_VP_SENSOR_FLAGS_500){
1081                         // Maximum 15fps
1082                         int i;
1083                         for(i=0; i<maximum; ++i) {
1084                                 if(framerate_controls[i].value ==
1085                                    CPIA2_VP_FRAMERATE_15)
1086                                         maximum = i;
1087                         }
1088                 }
1089                 if(m->index < 0 || m->index > maximum)
1090                         return -EINVAL;
1091
1092                 strcpy(m->name, framerate_controls[m->index].name);
1093                 break;
1094             }
1095         case CPIA2_CID_LIGHTS:
1096                 if(m->index < 0 || m->index >= NUM_LIGHTS_CONTROLS)
1097                         return -EINVAL;
1098
1099                 strcpy(m->name, lights_controls[m->index].name);
1100                 break;
1101         default:
1102                 return -EINVAL;
1103         }
1104
1105         return 0;
1106 }
1107
1108 /******************************************************************************
1109  *
1110  *  ioctl_g_ctrl
1111  *
1112  *  V4L2 get the value of a control variable
1113  *
1114  *****************************************************************************/
1115
1116 static int ioctl_g_ctrl(void *arg,struct camera_data *cam)
1117 {
1118         struct v4l2_control *c = arg;
1119
1120         switch(c->id) {
1121         case V4L2_CID_BRIGHTNESS:
1122                 cpia2_do_command(cam, CPIA2_CMD_GET_VP_BRIGHTNESS,
1123                                  TRANSFER_READ, 0);
1124                 c->value = cam->params.color_params.brightness;
1125                 break;
1126         case V4L2_CID_CONTRAST:
1127                 cpia2_do_command(cam, CPIA2_CMD_GET_CONTRAST,
1128                                  TRANSFER_READ, 0);
1129                 c->value = cam->params.color_params.contrast;
1130                 break;
1131         case V4L2_CID_SATURATION:
1132                 cpia2_do_command(cam, CPIA2_CMD_GET_VP_SATURATION,
1133                                  TRANSFER_READ, 0);
1134                 c->value = cam->params.color_params.saturation;
1135                 break;
1136         case V4L2_CID_HFLIP:
1137                 cpia2_do_command(cam, CPIA2_CMD_GET_USER_EFFECTS,
1138                                  TRANSFER_READ, 0);
1139                 c->value = (cam->params.vp_params.user_effects &
1140                             CPIA2_VP_USER_EFFECTS_MIRROR) != 0;
1141                 break;
1142         case V4L2_CID_VFLIP:
1143                 cpia2_do_command(cam, CPIA2_CMD_GET_USER_EFFECTS,
1144                                  TRANSFER_READ, 0);
1145                 c->value = (cam->params.vp_params.user_effects &
1146                             CPIA2_VP_USER_EFFECTS_FLIP) != 0;
1147                 break;
1148         case CPIA2_CID_TARGET_KB:
1149                 c->value = cam->params.vc_params.target_kb;
1150                 break;
1151         case CPIA2_CID_GPIO:
1152                 cpia2_do_command(cam, CPIA2_CMD_GET_VP_GPIO_DATA,
1153                                  TRANSFER_READ, 0);
1154                 c->value = cam->params.vp_params.gpio_data;
1155                 break;
1156         case CPIA2_CID_FLICKER_MODE:
1157         {
1158                 int i, mode;
1159                 cpia2_do_command(cam, CPIA2_CMD_GET_FLICKER_MODES,
1160                                  TRANSFER_READ, 0);
1161                 if(cam->params.flicker_control.cam_register &
1162                    CPIA2_VP_FLICKER_MODES_NEVER_FLICKER) {
1163                         mode = NEVER_FLICKER;
1164                 } else {
1165                     if(cam->params.flicker_control.cam_register &
1166                        CPIA2_VP_FLICKER_MODES_50HZ) {
1167                         mode = FLICKER_50;
1168                     } else {
1169                         mode = FLICKER_60;
1170                     }
1171                 }
1172                 for(i=0; i<NUM_FLICKER_CONTROLS; i++) {
1173                         if(flicker_controls[i].value == mode) {
1174                                 c->value = i;
1175                                 break;
1176                         }
1177                 }
1178                 if(i == NUM_FLICKER_CONTROLS)
1179                         return -EINVAL;
1180                 break;
1181         }
1182         case CPIA2_CID_FRAMERATE:
1183         {
1184                 int maximum = NUM_FRAMERATE_CONTROLS - 1;
1185                 int i;
1186                 for(i=0; i<= maximum; i++) {
1187                         if(cam->params.vp_params.frame_rate ==
1188                            framerate_controls[i].value)
1189                                 break;
1190                 }
1191                 if(i > maximum)
1192                         return -EINVAL;
1193                 c->value = i;
1194                 break;
1195         }
1196         case CPIA2_CID_USB_ALT:
1197                 c->value = cam->params.camera_state.stream_mode;
1198                 break;
1199         case CPIA2_CID_LIGHTS:
1200         {
1201                 int i;
1202                 cpia2_do_command(cam, CPIA2_CMD_GET_VP_GPIO_DATA,
1203                                  TRANSFER_READ, 0);
1204                 for(i=0; i<NUM_LIGHTS_CONTROLS; i++) {
1205                         if((cam->params.vp_params.gpio_data&GPIO_LIGHTS_MASK) ==
1206                            lights_controls[i].value) {
1207                                 break;
1208                         }
1209                 }
1210                 if(i == NUM_LIGHTS_CONTROLS)
1211                         return -EINVAL;
1212                 c->value = i;
1213                 break;
1214         }
1215         case CPIA2_CID_RESET_CAMERA:
1216                 return -EINVAL;
1217         default:
1218                 return -EINVAL;
1219         }
1220
1221         DBG("Get control id:%d, value:%d\n", c->id, c->value);
1222
1223         return 0;
1224 }
1225
1226 /******************************************************************************
1227  *
1228  *  ioctl_s_ctrl
1229  *
1230  *  V4L2 set the value of a control variable
1231  *
1232  *****************************************************************************/
1233
1234 static int ioctl_s_ctrl(void *arg,struct camera_data *cam)
1235 {
1236         struct v4l2_control *c = arg;
1237         int i;
1238         int retval = 0;
1239
1240         DBG("Set control id:%d, value:%d\n", c->id, c->value);
1241
1242         /* Check that the value is in range */
1243         for(i=0; i<NUM_CONTROLS; i++) {
1244                 if(c->id == controls[i].id) {
1245                         if(c->value < controls[i].minimum ||
1246                            c->value > controls[i].maximum) {
1247                                 return -EINVAL;
1248                         }
1249                         break;
1250                 }
1251         }
1252         if(i == NUM_CONTROLS)
1253                 return -EINVAL;
1254
1255         switch(c->id) {
1256         case V4L2_CID_BRIGHTNESS:
1257                 cpia2_set_brightness(cam, c->value);
1258                 break;
1259         case V4L2_CID_CONTRAST:
1260                 cpia2_set_contrast(cam, c->value);
1261                 break;
1262         case V4L2_CID_SATURATION:
1263                 cpia2_set_saturation(cam, c->value);
1264                 break;
1265         case V4L2_CID_HFLIP:
1266                 cpia2_set_property_mirror(cam, c->value);
1267                 break;
1268         case V4L2_CID_VFLIP:
1269                 cpia2_set_property_flip(cam, c->value);
1270                 break;
1271         case CPIA2_CID_TARGET_KB:
1272                 retval = cpia2_set_target_kb(cam, c->value);
1273                 break;
1274         case CPIA2_CID_GPIO:
1275                 retval = cpia2_set_gpio(cam, c->value);
1276                 break;
1277         case CPIA2_CID_FLICKER_MODE:
1278                 retval = cpia2_set_flicker_mode(cam,
1279                                               flicker_controls[c->value].value);
1280                 break;
1281         case CPIA2_CID_FRAMERATE:
1282                 retval = cpia2_set_fps(cam, framerate_controls[c->value].value);
1283                 break;
1284         case CPIA2_CID_USB_ALT:
1285                 retval = cpia2_usb_change_streaming_alternate(cam, c->value);
1286                 break;
1287         case CPIA2_CID_LIGHTS:
1288                 retval = cpia2_set_gpio(cam, lights_controls[c->value].value);
1289                 break;
1290         case CPIA2_CID_RESET_CAMERA:
1291                 cpia2_usb_stream_pause(cam);
1292                 cpia2_reset_camera(cam);
1293                 cpia2_usb_stream_resume(cam);
1294                 break;
1295         default:
1296                 retval = -EINVAL;
1297         }
1298
1299         return retval;
1300 }
1301
1302 /******************************************************************************
1303  *
1304  *  ioctl_g_jpegcomp
1305  *
1306  *  V4L2 get the JPEG compression parameters
1307  *
1308  *****************************************************************************/
1309
1310 static int ioctl_g_jpegcomp(void *arg,struct camera_data *cam)
1311 {
1312         struct v4l2_jpegcompression *parms = arg;
1313
1314         memset(parms, 0, sizeof(*parms));
1315
1316         parms->quality = 80; // TODO: Can this be made meaningful?
1317
1318         parms->jpeg_markers = V4L2_JPEG_MARKER_DQT | V4L2_JPEG_MARKER_DRI;
1319         if(!cam->params.compression.inhibit_htables) {
1320                 parms->jpeg_markers |= V4L2_JPEG_MARKER_DHT;
1321         }
1322
1323         parms->APPn = cam->APPn;
1324         parms->APP_len = cam->APP_len;
1325         if(cam->APP_len > 0) {
1326                 memcpy(parms->APP_data, cam->APP_data, cam->APP_len);
1327                 parms->jpeg_markers |= V4L2_JPEG_MARKER_APP;
1328         }
1329
1330         parms->COM_len = cam->COM_len;
1331         if(cam->COM_len > 0) {
1332                 memcpy(parms->COM_data, cam->COM_data, cam->COM_len);
1333                 parms->jpeg_markers |= JPEG_MARKER_COM;
1334         }
1335
1336         DBG("G_JPEGCOMP APP_len:%d COM_len:%d\n",
1337             parms->APP_len, parms->COM_len);
1338
1339         return 0;
1340 }
1341
1342 /******************************************************************************
1343  *
1344  *  ioctl_s_jpegcomp
1345  *
1346  *  V4L2 set the JPEG compression parameters
1347  *  NOTE: quality and some jpeg_markers are ignored.
1348  *
1349  *****************************************************************************/
1350
1351 static int ioctl_s_jpegcomp(void *arg,struct camera_data *cam)
1352 {
1353         struct v4l2_jpegcompression *parms = arg;
1354
1355         DBG("S_JPEGCOMP APP_len:%d COM_len:%d\n",
1356             parms->APP_len, parms->COM_len);
1357
1358         cam->params.compression.inhibit_htables =
1359                 !(parms->jpeg_markers & V4L2_JPEG_MARKER_DHT);
1360
1361         if(parms->APP_len != 0) {
1362                 if(parms->APP_len > 0 &&
1363                    parms->APP_len <= sizeof(cam->APP_data) &&
1364                    parms->APPn >= 0 && parms->APPn <= 15) {
1365                         cam->APPn = parms->APPn;
1366                         cam->APP_len = parms->APP_len;
1367                         memcpy(cam->APP_data, parms->APP_data, parms->APP_len);
1368                 } else {
1369                         LOG("Bad APPn Params n=%d len=%d\n",
1370                             parms->APPn, parms->APP_len);
1371                         return -EINVAL;
1372                 }
1373         } else {
1374                 cam->APP_len = 0;
1375         }
1376
1377         if(parms->COM_len != 0) {
1378                 if(parms->COM_len > 0 &&
1379                    parms->COM_len <= sizeof(cam->COM_data)) {
1380                         cam->COM_len = parms->COM_len;
1381                         memcpy(cam->COM_data, parms->COM_data, parms->COM_len);
1382                 } else {
1383                         LOG("Bad COM_len=%d\n", parms->COM_len);
1384                         return -EINVAL;
1385                 }
1386         }
1387
1388         return 0;
1389 }
1390
1391 /******************************************************************************
1392  *
1393  *  ioctl_reqbufs
1394  *
1395  *  V4L2 Initiate memory mapping.
1396  *  NOTE: The user's request is ignored. For now the buffers are fixed.
1397  *
1398  *****************************************************************************/
1399
1400 static int ioctl_reqbufs(void *arg,struct camera_data *cam)
1401 {
1402         struct v4l2_requestbuffers *req = arg;
1403
1404         if(req->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1405            req->memory != V4L2_MEMORY_MMAP)
1406                 return -EINVAL;
1407
1408         DBG("REQBUFS requested:%d returning:%d\n", req->count, cam->num_frames);
1409         req->count = cam->num_frames;
1410         memset(&req->reserved, 0, sizeof(req->reserved));
1411
1412         return 0;
1413 }
1414
1415 /******************************************************************************
1416  *
1417  *  ioctl_querybuf
1418  *
1419  *  V4L2 Query memory buffer status.
1420  *
1421  *****************************************************************************/
1422
1423 static int ioctl_querybuf(void *arg,struct camera_data *cam)
1424 {
1425         struct v4l2_buffer *buf = arg;
1426
1427         if(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1428            buf->index > cam->num_frames)
1429                 return -EINVAL;
1430
1431         buf->m.offset = cam->buffers[buf->index].data - cam->frame_buffer;
1432         buf->length = cam->frame_size;
1433
1434         buf->memory = V4L2_MEMORY_MMAP;
1435
1436         if(cam->mmapped)
1437                 buf->flags = V4L2_BUF_FLAG_MAPPED;
1438         else
1439                 buf->flags = 0;
1440
1441         switch (cam->buffers[buf->index].status) {
1442         case FRAME_EMPTY:
1443         case FRAME_ERROR:
1444         case FRAME_READING:
1445                 buf->bytesused = 0;
1446                 buf->flags = V4L2_BUF_FLAG_QUEUED;
1447                 break;
1448         case FRAME_READY:
1449                 buf->bytesused = cam->buffers[buf->index].length;
1450                 buf->timestamp = cam->buffers[buf->index].timestamp;
1451                 buf->sequence = cam->buffers[buf->index].seq;
1452                 buf->flags = V4L2_BUF_FLAG_DONE;
1453                 break;
1454         }
1455
1456         DBG("QUERYBUF index:%d offset:%d flags:%d seq:%d bytesused:%d\n",
1457              buf->index, buf->m.offset, buf->flags, buf->sequence,
1458              buf->bytesused);
1459
1460         return 0;
1461 }
1462
1463 /******************************************************************************
1464  *
1465  *  ioctl_qbuf
1466  *
1467  *  V4L2 User is freeing buffer
1468  *
1469  *****************************************************************************/
1470
1471 static int ioctl_qbuf(void *arg,struct camera_data *cam)
1472 {
1473         struct v4l2_buffer *buf = arg;
1474
1475         if(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1476            buf->memory != V4L2_MEMORY_MMAP ||
1477            buf->index > cam->num_frames)
1478                 return -EINVAL;
1479
1480         DBG("QBUF #%d\n", buf->index);
1481
1482         if(cam->buffers[buf->index].status == FRAME_READY)
1483                 cam->buffers[buf->index].status = FRAME_EMPTY;
1484
1485         return 0;
1486 }
1487
1488 /******************************************************************************
1489  *
1490  *  find_earliest_filled_buffer
1491  *
1492  *  Helper for ioctl_dqbuf. Find the next ready buffer.
1493  *
1494  *****************************************************************************/
1495
1496 static int find_earliest_filled_buffer(struct camera_data *cam)
1497 {
1498         int i;
1499         int found = -1;
1500         for (i=0; i<cam->num_frames; i++) {
1501                 if(cam->buffers[i].status == FRAME_READY) {
1502                         if(found < 0) {
1503                                 found = i;
1504                         } else {
1505                                 /* find which buffer is earlier */
1506                                 struct timeval *tv1, *tv2;
1507                                 tv1 = &cam->buffers[i].timestamp;
1508                                 tv2 = &cam->buffers[found].timestamp;
1509                                 if(tv1->tv_sec < tv2->tv_sec ||
1510                                    (tv1->tv_sec == tv2->tv_sec &&
1511                                     tv1->tv_usec < tv2->tv_usec))
1512                                         found = i;
1513                         }
1514                 }
1515         }
1516         return found;
1517 }
1518
1519 /******************************************************************************
1520  *
1521  *  ioctl_dqbuf
1522  *
1523  *  V4L2 User is asking for a filled buffer.
1524  *
1525  *****************************************************************************/
1526
1527 static int ioctl_dqbuf(void *arg,struct camera_data *cam, struct file *file)
1528 {
1529         struct v4l2_buffer *buf = arg;
1530         int frame;
1531
1532         if(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1533            buf->memory != V4L2_MEMORY_MMAP)
1534                 return -EINVAL;
1535
1536         frame = find_earliest_filled_buffer(cam);
1537
1538         if(frame < 0 && file->f_flags&O_NONBLOCK)
1539                 return -EAGAIN;
1540
1541         if(frame < 0) {
1542                 /* Wait for a frame to become available */
1543                 struct framebuf *cb=cam->curbuff;
1544                 mutex_unlock(&cam->busy_lock);
1545                 wait_event_interruptible(cam->wq_stream,
1546                                          !cam->present ||
1547                                          (cb=cam->curbuff)->status == FRAME_READY);
1548                 mutex_lock(&cam->busy_lock);
1549                 if (signal_pending(current))
1550                         return -ERESTARTSYS;
1551                 if(!cam->present)
1552                         return -ENOTTY;
1553                 frame = cb->num;
1554         }
1555
1556
1557         buf->index = frame;
1558         buf->bytesused = cam->buffers[buf->index].length;
1559         buf->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_DONE;
1560         buf->field = V4L2_FIELD_NONE;
1561         buf->timestamp = cam->buffers[buf->index].timestamp;
1562         buf->sequence = cam->buffers[buf->index].seq;
1563         buf->m.offset = cam->buffers[buf->index].data - cam->frame_buffer;
1564         buf->length = cam->frame_size;
1565         buf->input = 0;
1566         buf->reserved = 0;
1567         memset(&buf->timecode, 0, sizeof(buf->timecode));
1568
1569         DBG("DQBUF #%d status:%d seq:%d length:%d\n", buf->index,
1570             cam->buffers[buf->index].status, buf->sequence, buf->bytesused);
1571
1572         return 0;
1573 }
1574
1575 /******************************************************************************
1576  *
1577  *  cpia2_ioctl
1578  *
1579  *****************************************************************************/
1580 static int cpia2_do_ioctl(struct inode *inode, struct file *file,
1581                           unsigned int ioctl_nr, void *arg)
1582 {
1583         struct video_device *dev = video_devdata(file);
1584         struct camera_data *cam = video_get_drvdata(dev);
1585         int retval = 0;
1586
1587         if (!cam)
1588                 return -ENOTTY;
1589
1590         /* make this _really_ smp-safe */
1591         if (mutex_lock_interruptible(&cam->busy_lock))
1592                 return -ERESTARTSYS;
1593
1594         if (!cam->present) {
1595                 mutex_unlock(&cam->busy_lock);
1596                 return -ENODEV;
1597         }
1598
1599         /* Priority check */
1600         switch (ioctl_nr) {
1601         case VIDIOCSWIN:
1602         case VIDIOCMCAPTURE:
1603         case VIDIOC_S_FMT:
1604         {
1605                 struct cpia2_fh *fh = file->private_data;
1606                 retval = v4l2_prio_check(&cam->prio, &fh->prio);
1607                 if(retval) {
1608                         mutex_unlock(&cam->busy_lock);
1609                         return retval;
1610                 }
1611                 break;
1612         }
1613         case VIDIOCGMBUF:
1614         case VIDIOCSYNC:
1615         {
1616                 struct cpia2_fh *fh = file->private_data;
1617                 if(fh->prio != V4L2_PRIORITY_RECORD) {
1618                         mutex_unlock(&cam->busy_lock);
1619                         return -EBUSY;
1620                 }
1621                 break;
1622         }
1623         default:
1624                 break;
1625         }
1626
1627         switch (ioctl_nr) {
1628         case VIDIOCGCAP:        /* query capabilities */
1629                 retval = ioctl_cap_query(arg, cam);
1630                 break;
1631
1632         case VIDIOCGCHAN:       /* get video source - we are a camera, nothing else */
1633                 retval = ioctl_get_channel(arg);
1634                 break;
1635         case VIDIOCSCHAN:       /* set video source - we are a camera, nothing else */
1636                 retval = ioctl_set_channel(arg);
1637                 break;
1638         case VIDIOCGPICT:       /* image properties */
1639                 memcpy(arg, &cam->vp, sizeof(struct video_picture));
1640                 break;
1641         case VIDIOCSPICT:
1642                 retval = ioctl_set_image_prop(arg, cam);
1643                 break;
1644         case VIDIOCGWIN:        /* get/set capture window */
1645                 memcpy(arg, &cam->vw, sizeof(struct video_window));
1646                 break;
1647         case VIDIOCSWIN:
1648                 retval = ioctl_set_window_size(arg, cam, file->private_data);
1649                 break;
1650         case VIDIOCGMBUF:       /* mmap interface */
1651                 retval = ioctl_get_mbuf(arg, cam);
1652                 break;
1653         case VIDIOCMCAPTURE:
1654                 retval = ioctl_mcapture(arg, cam, file->private_data);
1655                 break;
1656         case VIDIOCSYNC:
1657                 retval = ioctl_sync(arg, cam);
1658                 break;
1659                 /* pointless to implement overlay with this camera */
1660         case VIDIOCCAPTURE:
1661         case VIDIOCGFBUF:
1662         case VIDIOCSFBUF:
1663         case VIDIOCKEY:
1664                 retval = -EINVAL;
1665                 break;
1666
1667                 /* tuner interface - we have none */
1668         case VIDIOCGTUNER:
1669         case VIDIOCSTUNER:
1670         case VIDIOCGFREQ:
1671         case VIDIOCSFREQ:
1672                 retval = -EINVAL;
1673                 break;
1674
1675                 /* audio interface - we have none */
1676         case VIDIOCGAUDIO:
1677         case VIDIOCSAUDIO:
1678                 retval = -EINVAL;
1679                 break;
1680
1681         /* CPIA2 extension to Video4Linux API */
1682         case CPIA2_IOC_SET_GPIO:
1683                 retval = ioctl_set_gpio(arg, cam);
1684                 break;
1685         case VIDIOC_QUERYCAP:
1686                 retval = ioctl_querycap(arg,cam);
1687                 break;
1688
1689         case VIDIOC_ENUMINPUT:
1690         case VIDIOC_G_INPUT:
1691         case VIDIOC_S_INPUT:
1692                 retval = ioctl_input(ioctl_nr, arg,cam);
1693                 break;
1694
1695         case VIDIOC_ENUM_FMT:
1696                 retval = ioctl_enum_fmt(arg,cam);
1697                 break;
1698         case VIDIOC_TRY_FMT:
1699                 retval = ioctl_try_fmt(arg,cam);
1700                 break;
1701         case VIDIOC_G_FMT:
1702                 retval = ioctl_get_fmt(arg,cam);
1703                 break;
1704         case VIDIOC_S_FMT:
1705                 retval = ioctl_set_fmt(arg,cam,file->private_data);
1706                 break;
1707
1708         case VIDIOC_CROPCAP:
1709                 retval = ioctl_cropcap(arg,cam);
1710                 break;
1711         case VIDIOC_G_CROP:
1712         case VIDIOC_S_CROP:
1713                 // TODO: I think cropping can be implemented - SJB
1714                 retval = -EINVAL;
1715                 break;
1716
1717         case VIDIOC_QUERYCTRL:
1718                 retval = ioctl_queryctrl(arg,cam);
1719                 break;
1720         case VIDIOC_QUERYMENU:
1721                 retval = ioctl_querymenu(arg,cam);
1722                 break;
1723         case VIDIOC_G_CTRL:
1724                 retval = ioctl_g_ctrl(arg,cam);
1725                 break;
1726         case VIDIOC_S_CTRL:
1727                 retval = ioctl_s_ctrl(arg,cam);
1728                 break;
1729
1730         case VIDIOC_G_JPEGCOMP:
1731                 retval = ioctl_g_jpegcomp(arg,cam);
1732                 break;
1733         case VIDIOC_S_JPEGCOMP:
1734                 retval = ioctl_s_jpegcomp(arg,cam);
1735                 break;
1736
1737         case VIDIOC_G_PRIORITY:
1738         {
1739                 struct cpia2_fh *fh = file->private_data;
1740                 *(enum v4l2_priority*)arg = fh->prio;
1741                 break;
1742         }
1743         case VIDIOC_S_PRIORITY:
1744         {
1745                 struct cpia2_fh *fh = file->private_data;
1746                 enum v4l2_priority prio;
1747                 prio = *(enum v4l2_priority*)arg;
1748                 if(cam->streaming &&
1749                    prio != fh->prio &&
1750                    fh->prio == V4L2_PRIORITY_RECORD) {
1751                         /* Can't drop record priority while streaming */
1752                         retval = -EBUSY;
1753                 } else if(prio == V4L2_PRIORITY_RECORD &&
1754                    prio != fh->prio &&
1755                    v4l2_prio_max(&cam->prio) == V4L2_PRIORITY_RECORD) {
1756                         /* Only one program can record at a time */
1757                         retval = -EBUSY;
1758                 } else {
1759                         retval = v4l2_prio_change(&cam->prio, &fh->prio, prio);
1760                 }
1761                 break;
1762         }
1763
1764         case VIDIOC_REQBUFS:
1765                 retval = ioctl_reqbufs(arg,cam);
1766                 break;
1767         case VIDIOC_QUERYBUF:
1768                 retval = ioctl_querybuf(arg,cam);
1769                 break;
1770         case VIDIOC_QBUF:
1771                 retval = ioctl_qbuf(arg,cam);
1772                 break;
1773         case VIDIOC_DQBUF:
1774                 retval = ioctl_dqbuf(arg,cam,file);
1775                 break;
1776         case VIDIOC_STREAMON:
1777         {
1778                 int type;
1779                 DBG("VIDIOC_STREAMON, streaming=%d\n", cam->streaming);
1780                 type = *(int*)arg;
1781                 if(!cam->mmapped || type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1782                         retval = -EINVAL;
1783
1784                 if(!cam->streaming) {
1785                         retval = cpia2_usb_stream_start(cam,
1786                                           cam->params.camera_state.stream_mode);
1787                 } else {
1788                         retval = -EINVAL;
1789                 }
1790
1791                 break;
1792         }
1793         case VIDIOC_STREAMOFF:
1794         {
1795                 int type;
1796                 DBG("VIDIOC_STREAMOFF, streaming=%d\n", cam->streaming);
1797                 type = *(int*)arg;
1798                 if(!cam->mmapped || type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1799                         retval = -EINVAL;
1800
1801                 if(cam->streaming) {
1802                         retval = cpia2_usb_stream_stop(cam);
1803                 } else {
1804                         retval = -EINVAL;
1805                 }
1806
1807                 break;
1808         }
1809
1810         case VIDIOC_ENUMOUTPUT:
1811         case VIDIOC_G_OUTPUT:
1812         case VIDIOC_S_OUTPUT:
1813         case VIDIOC_G_MODULATOR:
1814         case VIDIOC_S_MODULATOR:
1815
1816         case VIDIOC_ENUMAUDIO:
1817         case VIDIOC_G_AUDIO:
1818         case VIDIOC_S_AUDIO:
1819
1820         case VIDIOC_ENUMAUDOUT:
1821         case VIDIOC_G_AUDOUT:
1822         case VIDIOC_S_AUDOUT:
1823
1824         case VIDIOC_ENUMSTD:
1825         case VIDIOC_QUERYSTD:
1826         case VIDIOC_G_STD:
1827         case VIDIOC_S_STD:
1828
1829         case VIDIOC_G_TUNER:
1830         case VIDIOC_S_TUNER:
1831         case VIDIOC_G_FREQUENCY:
1832         case VIDIOC_S_FREQUENCY:
1833
1834         case VIDIOC_OVERLAY:
1835         case VIDIOC_G_FBUF:
1836         case VIDIOC_S_FBUF:
1837
1838         case VIDIOC_G_PARM:
1839         case VIDIOC_S_PARM:
1840                 retval = -EINVAL;
1841                 break;
1842         default:
1843                 retval = -ENOIOCTLCMD;
1844                 break;
1845         }
1846
1847         mutex_unlock(&cam->busy_lock);
1848         return retval;
1849 }
1850
1851 static int cpia2_ioctl(struct inode *inode, struct file *file,
1852                        unsigned int ioctl_nr, unsigned long iarg)
1853 {
1854         return video_usercopy(inode, file, ioctl_nr, iarg, cpia2_do_ioctl);
1855 }
1856
1857 /******************************************************************************
1858  *
1859  *  cpia2_mmap
1860  *
1861  *****************************************************************************/
1862 static int cpia2_mmap(struct file *file, struct vm_area_struct *area)
1863 {
1864         int retval;
1865         struct video_device *dev = video_devdata(file);
1866         struct camera_data *cam = video_get_drvdata(dev);
1867
1868         /* Priority check */
1869         struct cpia2_fh *fh = file->private_data;
1870         if(fh->prio != V4L2_PRIORITY_RECORD) {
1871                 return -EBUSY;
1872         }
1873
1874         retval = cpia2_remap_buffer(cam, area);
1875
1876         if(!retval)
1877                 fh->mmapped = 1;
1878         return retval;
1879 }
1880
1881 /******************************************************************************
1882  *
1883  *  reset_camera_struct_v4l
1884  *
1885  *  Sets all values to the defaults
1886  *****************************************************************************/
1887 static void reset_camera_struct_v4l(struct camera_data *cam)
1888 {
1889         /***
1890          * Fill in the v4l structures.  video_cap is filled in inside the VIDIOCCAP
1891          * Ioctl.  Here, just do the window and picture stucts.
1892          ***/
1893         cam->vp.palette = (u16) VIDEO_PALETTE_RGB24;    /* Is this right? */
1894         cam->vp.brightness = (u16) cam->params.color_params.brightness * 256;
1895         cam->vp.colour = (u16) cam->params.color_params.saturation * 256;
1896         cam->vp.contrast = (u16) cam->params.color_params.contrast * 256;
1897
1898         cam->vw.x = 0;
1899         cam->vw.y = 0;
1900         cam->vw.width = cam->params.roi.width;
1901         cam->vw.height = cam->params.roi.height;
1902         cam->vw.flags = 0;
1903         cam->vw.clipcount = 0;
1904
1905         cam->frame_size = buffer_size;
1906         cam->num_frames = num_buffers;
1907
1908         /* FlickerModes */
1909         cam->params.flicker_control.flicker_mode_req = flicker_mode;
1910         cam->params.flicker_control.mains_frequency = flicker_freq;
1911
1912         /* streamMode */
1913         cam->params.camera_state.stream_mode = alternate;
1914
1915         cam->pixelformat = V4L2_PIX_FMT_JPEG;
1916         v4l2_prio_init(&cam->prio);
1917         return;
1918 }
1919
1920 /***
1921  * The v4l video device structure initialized for this device
1922  ***/
1923 static const struct file_operations fops_template = {
1924         .owner          = THIS_MODULE,
1925         .open           = cpia2_open,
1926         .release        = cpia2_close,
1927         .read           = cpia2_v4l_read,
1928         .poll           = cpia2_v4l_poll,
1929         .ioctl          = cpia2_ioctl,
1930         .llseek         = no_llseek,
1931 #ifdef CONFIG_COMPAT
1932         .compat_ioctl   = v4l_compat_ioctl32,
1933 #endif
1934         .mmap           = cpia2_mmap,
1935 };
1936
1937 static struct video_device cpia2_template = {
1938         /* I could not find any place for the old .initialize initializer?? */
1939         .name=          "CPiA2 Camera",
1940         .minor=         -1,
1941         .fops=          &fops_template,
1942         .release=       video_device_release,
1943 };
1944
1945 /******************************************************************************
1946  *
1947  *  cpia2_register_camera
1948  *
1949  *****************************************************************************/
1950 int cpia2_register_camera(struct camera_data *cam)
1951 {
1952         cam->vdev = video_device_alloc();
1953         if(!cam->vdev)
1954                 return -ENOMEM;
1955
1956         memcpy(cam->vdev, &cpia2_template, sizeof(cpia2_template));
1957         video_set_drvdata(cam->vdev, cam);
1958
1959         reset_camera_struct_v4l(cam);
1960
1961         /* register v4l device */
1962         if (video_register_device
1963             (cam->vdev, VFL_TYPE_GRABBER, video_nr) == -1) {
1964                 ERR("video_register_device failed\n");
1965                 video_device_release(cam->vdev);
1966                 return -ENODEV;
1967         }
1968
1969         return 0;
1970 }
1971
1972 /******************************************************************************
1973  *
1974  *  cpia2_unregister_camera
1975  *
1976  *****************************************************************************/
1977 void cpia2_unregister_camera(struct camera_data *cam)
1978 {
1979         if (!cam->open_count) {
1980                 video_unregister_device(cam->vdev);
1981         } else {
1982                 LOG("/dev/video%d removed while open, "
1983                     "deferring video_unregister_device\n",
1984                     cam->vdev->minor);
1985         }
1986 }
1987
1988 /******************************************************************************
1989  *
1990  *  check_parameters
1991  *
1992  *  Make sure that all user-supplied parameters are sensible
1993  *****************************************************************************/
1994 static void __init check_parameters(void)
1995 {
1996         if(buffer_size < PAGE_SIZE) {
1997                 buffer_size = PAGE_SIZE;
1998                 LOG("buffer_size too small, setting to %d\n", buffer_size);
1999         } else if(buffer_size > 1024*1024) {
2000                 /* arbitrary upper limiit */
2001                 buffer_size = 1024*1024;
2002                 LOG("buffer_size ridiculously large, setting to %d\n",
2003                     buffer_size);
2004         } else {
2005                 buffer_size += PAGE_SIZE-1;
2006                 buffer_size &= ~(PAGE_SIZE-1);
2007         }
2008
2009         if(num_buffers < 1) {
2010                 num_buffers = 1;
2011                 LOG("num_buffers too small, setting to %d\n", num_buffers);
2012         } else if(num_buffers > VIDEO_MAX_FRAME) {
2013                 num_buffers = VIDEO_MAX_FRAME;
2014                 LOG("num_buffers too large, setting to %d\n", num_buffers);
2015         }
2016
2017         if(alternate < USBIF_ISO_1 || alternate > USBIF_ISO_6) {
2018                 alternate = DEFAULT_ALT;
2019                 LOG("alternate specified is invalid, using %d\n", alternate);
2020         }
2021
2022         if (flicker_mode != NEVER_FLICKER && flicker_mode != ANTI_FLICKER_ON) {
2023                 flicker_mode = NEVER_FLICKER;
2024                 LOG("Flicker mode specified is invalid, using %d\n",
2025                     flicker_mode);
2026         }
2027
2028         if (flicker_freq != FLICKER_50 && flicker_freq != FLICKER_60) {
2029                 flicker_freq = FLICKER_60;
2030                 LOG("Flicker mode specified is invalid, using %d\n",
2031                     flicker_freq);
2032         }
2033
2034         if(video_nr < -1 || video_nr > 64) {
2035                 video_nr = -1;
2036                 LOG("invalid video_nr specified, must be -1 to 64\n");
2037         }
2038
2039         DBG("Using %d buffers, each %d bytes, alternate=%d\n",
2040             num_buffers, buffer_size, alternate);
2041 }
2042
2043 /************   Module Stuff ***************/
2044
2045
2046 /******************************************************************************
2047  *
2048  * cpia2_init/module_init
2049  *
2050  *****************************************************************************/
2051 static int __init cpia2_init(void)
2052 {
2053         LOG("%s v%d.%d.%d\n",
2054             ABOUT, CPIA2_MAJ_VER, CPIA2_MIN_VER, CPIA2_PATCH_VER);
2055         check_parameters();
2056         cpia2_usb_init();
2057         return 0;
2058 }
2059
2060
2061 /******************************************************************************
2062  *
2063  * cpia2_exit/module_exit
2064  *
2065  *****************************************************************************/
2066 static void __exit cpia2_exit(void)
2067 {
2068         cpia2_usb_cleanup();
2069         schedule_timeout(2 * HZ);
2070 }
2071
2072 module_init(cpia2_init);
2073 module_exit(cpia2_exit);
2074