drivers/media/video/v4l1-compat.c

   1 /*
   2  *
   3  *      Video for Linux Two
   4  *      Backward Compatibility Layer
   5  *
   6  *      Support subroutines for providing V4L2 drivers with backward
   7  *      compatibility with applications using the old API.
   8  *
   9  *      This program is free software; you can redistribute it and/or
  10  *      modify it under the terms of the GNU General Public License
  11  *      as published by the Free Software Foundation; either version
  12  *      2 of the License, or (at your option) any later version.
  13  *
  14  * Author:      Bill Dirks <bill@thedirks.org>
  15  *              et al.
  16  *
  17  */
  18
  19
  20 #include <linux/init.h>
  21 #include <linux/module.h>
  22 #include <linux/types.h>
  23 #include <linux/kernel.h>
  24 #include <linux/sched.h>
  25 #include <linux/mm.h>
  26 #include <linux/fs.h>
  27 #include <linux/file.h>
  28 #include <linux/string.h>
  29 #include <linux/errno.h>
  30 #include <linux/slab.h>
  31 #include <linux/videodev.h>
  32 #include <media/v4l2-common.h>
  33
  34 #include <asm/uaccess.h>
  35 #include <asm/system.h>
  36 #include <asm/pgtable.h>
  37
  38 #ifdef CONFIG_KMOD
  39 #include <linux/kmod.h>
  40 #endif
  41
  42 static unsigned int debug;
  43 module_param(debug, int, 0644);
  44 MODULE_PARM_DESC(debug, "enable debug messages");
  45 MODULE_AUTHOR("Bill Dirks");
  46 MODULE_DESCRIPTION("v4l(1) compatibility layer for v4l2 drivers.");
  47 MODULE_LICENSE("GPL");
  48
  49 #define dprintk(fmt, arg...) \
  50         do { \
  51                 if (debug) \
  52                         printk(KERN_DEBUG "v4l1-compat: " fmt , ## arg);\
  53         } while (0)
  54
  55 /*
  56  *      I O C T L   T R A N S L A T I O N
  57  *
  58  *      From here on down is the code for translating the numerous
  59  *      ioctl commands from the old API to the new API.
  60  */
  61
  62 static int
  63 get_v4l_control(struct inode            *inode,
  64                 struct file             *file,
  65                 int                     cid,
  66                 v4l2_kioctl             drv)
  67 {
  68         struct v4l2_queryctrl   qctrl2;
  69         struct v4l2_control     ctrl2;
  70         int                     err;
  71
  72         qctrl2.id = cid;
  73         err = drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2);
  74         if (err < 0)
  75                 dprintk("VIDIOC_QUERYCTRL: %d\n", err);
  76         if (err == 0 && !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED)) {
  77                 ctrl2.id = qctrl2.id;
  78                 err = drv(inode, file, VIDIOC_G_CTRL, &ctrl2);
  79                 if (err < 0) {
  80                         dprintk("VIDIOC_G_CTRL: %d\n", err);
  81                         return 0;
  82                 }
  83                 return ((ctrl2.value - qctrl2.minimum) * 65535
  84                          + (qctrl2.maximum - qctrl2.minimum) / 2)
  85                         / (qctrl2.maximum - qctrl2.minimum);
  86         }
  87         return 0;
  88 }
  89
  90 static int
  91 set_v4l_control(struct inode            *inode,
  92                 struct file             *file,
  93                 int                     cid,
  94                 int                     value,
  95                 v4l2_kioctl             drv)
  96 {
  97         struct v4l2_queryctrl   qctrl2;
  98         struct v4l2_control     ctrl2;
  99         int                     err;
 100
 101         qctrl2.id = cid;
 102         err = drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2);
 103         if (err < 0)
 104                 dprintk("VIDIOC_QUERYCTRL: %d\n", err);
 105         if (err == 0 &&
 106             !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED) &&
 107             !(qctrl2.flags & V4L2_CTRL_FLAG_GRABBED)) {
 108                 if (value < 0)
 109                         value = 0;
 110                 if (value > 65535)
 111                         value = 65535;
 112                 if (value && qctrl2.type == V4L2_CTRL_TYPE_BOOLEAN)
 113                         value = 65535;
 114                 ctrl2.id = qctrl2.id;
 115                 ctrl2.value =
 116                         (value * (qctrl2.maximum - qctrl2.minimum)
 117                          + 32767)
 118                         / 65535;
 119                 ctrl2.value += qctrl2.minimum;
 120                 err = drv(inode, file, VIDIOC_S_CTRL, &ctrl2);
 121                 if (err < 0)
 122                         dprintk("VIDIOC_S_CTRL: %d\n", err);
 123         }
 124         return 0;
 125 }
 126
 127 /* ----------------------------------------------------------------- */
 128
 129 static const unsigned int palette2pixelformat[] = {
 130         [VIDEO_PALETTE_GREY]    = V4L2_PIX_FMT_GREY,
 131         [VIDEO_PALETTE_RGB555]  = V4L2_PIX_FMT_RGB555,
 132         [VIDEO_PALETTE_RGB565]  = V4L2_PIX_FMT_RGB565,
 133         [VIDEO_PALETTE_RGB24]   = V4L2_PIX_FMT_BGR24,
 134         [VIDEO_PALETTE_RGB32]   = V4L2_PIX_FMT_BGR32,
 135         /* yuv packed pixel */
 136         [VIDEO_PALETTE_YUYV]    = V4L2_PIX_FMT_YUYV,
 137         [VIDEO_PALETTE_YUV422]  = V4L2_PIX_FMT_YUYV,
 138         [VIDEO_PALETTE_UYVY]    = V4L2_PIX_FMT_UYVY,
 139         /* yuv planar */
 140         [VIDEO_PALETTE_YUV410P] = V4L2_PIX_FMT_YUV410,
 141         [VIDEO_PALETTE_YUV420]  = V4L2_PIX_FMT_YUV420,
 142         [VIDEO_PALETTE_YUV420P] = V4L2_PIX_FMT_YUV420,
 143         [VIDEO_PALETTE_YUV411P] = V4L2_PIX_FMT_YUV411P,
 144         [VIDEO_PALETTE_YUV422P] = V4L2_PIX_FMT_YUV422P,
 145 };
 146
 147 static unsigned int __pure
 148 palette_to_pixelformat(unsigned int palette)
 149 {
 150         if (palette < ARRAY_SIZE(palette2pixelformat))
 151                 return palette2pixelformat[palette];
 152         else
 153                 return 0;
 154 }
 155
 156 static unsigned int __attribute_const__
 157 pixelformat_to_palette(unsigned int pixelformat)
 158 {
 159         int     palette = 0;
 160         switch (pixelformat) {
 161         case V4L2_PIX_FMT_GREY:
 162                 palette = VIDEO_PALETTE_GREY;
 163                 break;
 164         case V4L2_PIX_FMT_RGB555:
 165                 palette = VIDEO_PALETTE_RGB555;
 166                 break;
 167         case V4L2_PIX_FMT_RGB565:
 168                 palette = VIDEO_PALETTE_RGB565;
 169                 break;
 170         case V4L2_PIX_FMT_BGR24:
 171                 palette = VIDEO_PALETTE_RGB24;
 172                 break;
 173         case V4L2_PIX_FMT_BGR32:
 174                 palette = VIDEO_PALETTE_RGB32;
 175                 break;
 176         /* yuv packed pixel */
 177         case V4L2_PIX_FMT_YUYV:
 178                 palette = VIDEO_PALETTE_YUYV;
 179                 break;
 180         case V4L2_PIX_FMT_UYVY:
 181                 palette = VIDEO_PALETTE_UYVY;
 182                 break;
 183         /* yuv planar */
 184         case V4L2_PIX_FMT_YUV410:
 185                 palette = VIDEO_PALETTE_YUV420;
 186                 break;
 187         case V4L2_PIX_FMT_YUV420:
 188                 palette = VIDEO_PALETTE_YUV420;
 189                 break;
 190         case V4L2_PIX_FMT_YUV411P:
 191                 palette = VIDEO_PALETTE_YUV411P;
 192                 break;
 193         case V4L2_PIX_FMT_YUV422P:
 194                 palette = VIDEO_PALETTE_YUV422P;
 195                 break;
 196         }
 197         return palette;
 198 }
 199
 200 /* ----------------------------------------------------------------- */
 201
 202 static int poll_one(struct file *file)
 203 {
 204         int retval = 1;
 205         poll_table *table;
 206         struct poll_wqueues pwq;
 207
 208         poll_initwait(&pwq);
 209         table = &pwq.pt;
 210         for (;;) {
 211                 int mask;
 212                 set_current_state(TASK_INTERRUPTIBLE);
 213                 mask = file->f_op->poll(file, table);
 214                 if (mask & POLLIN)
 215                         break;
 216                 table = NULL;
 217                 if (signal_pending(current)) {
 218                         retval = -ERESTARTSYS;
 219                         break;
 220                 }
 221                 schedule();
 222         }
 223         set_current_state(TASK_RUNNING);
 224         poll_freewait(&pwq);
 225         return retval;
 226 }
 227
 228 static int count_inputs(struct inode         *inode,
 229                         struct file          *file,
 230                         v4l2_kioctl          drv)
 231 {
 232         struct v4l2_input input2;
 233         int i;
 234
 235         for (i = 0;; i++) {
 236                 memset(&input2, 0, sizeof(input2));
 237                 input2.index = i;
 238                 if (0 != drv(inode, file, VIDIOC_ENUMINPUT, &input2))
 239                         break;
 240         }
 241         return i;
 242 }
 243
 244 static int check_size(struct inode         *inode,
 245                       struct file          *file,
 246                       v4l2_kioctl          drv,
 247                       int *maxw, int *maxh)
 248 {
 249         struct v4l2_fmtdesc desc2;
 250         struct v4l2_format  fmt2;
 251
 252         memset(&desc2, 0, sizeof(desc2));
 253         memset(&fmt2, 0, sizeof(fmt2));
 254
 255         desc2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 256         if (0 != drv(inode, file, VIDIOC_ENUM_FMT, &desc2))
 257                 goto done;
 258
 259         fmt2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 260         fmt2.fmt.pix.width       = 10000;
 261         fmt2.fmt.pix.height      = 10000;
 262         fmt2.fmt.pix.pixelformat = desc2.pixelformat;
 263         if (0 != drv(inode, file, VIDIOC_TRY_FMT, &fmt2))
 264                 goto done;
 265
 266         *maxw = fmt2.fmt.pix.width;
 267         *maxh = fmt2.fmt.pix.height;
 268
 269  done:
 270         return 0;
 271 }
 272
 273 /* ----------------------------------------------------------------- */
 274
 275 /*
 276  *      This function is exported.
 277  */
 278 int
 279 v4l_compat_translate_ioctl(struct inode         *inode,
 280                            struct file          *file,
 281                            int                  cmd,
 282                            void                 *arg,
 283                            v4l2_kioctl          drv)
 284 {
 285         struct v4l2_capability  *cap2 = NULL;
 286         struct v4l2_format      *fmt2 = NULL;
 287         enum v4l2_buf_type      captype = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 288
 289         struct v4l2_framebuffer fbuf2;
 290         struct v4l2_input       input2;
 291         struct v4l2_tuner       tun2;
 292         struct v4l2_standard    std2;
 293         struct v4l2_frequency   freq2;
 294         struct v4l2_audio       aud2;
 295         struct v4l2_queryctrl   qctrl2;
 296         struct v4l2_buffer      buf2;
 297         v4l2_std_id             sid;
 298         int i, err = 0;
 299
 300         switch (cmd) {
 301         case VIDIOCGCAP:        /* capability */
 302         {
 303                 struct video_capability *cap = arg;
 304
 305                 cap2 = kzalloc(sizeof(*cap2), GFP_KERNEL);
 306                 if (!cap2) {
 307                         err = -ENOMEM;
 308                         break;
 309                 }
 310                 memset(cap, 0, sizeof(*cap));
 311                 memset(&fbuf2, 0, sizeof(fbuf2));
 312
 313                 err = drv(inode, file, VIDIOC_QUERYCAP, cap2);
 314                 if (err < 0) {
 315                         dprintk("VIDIOCGCAP / VIDIOC_QUERYCAP: %d\n", err);
 316                         break;
 317                 }
 318                 if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY) {
 319                         err = drv(inode, file, VIDIOC_G_FBUF, &fbuf2);
 320                         if (err < 0) {
 321                                 dprintk("VIDIOCGCAP / VIDIOC_G_FBUF: %d\n", err);
 322                                 memset(&fbuf2, 0, sizeof(fbuf2));
 323                         }
 324                         err = 0;
 325                 }
 326
 327                 memcpy(cap->name, cap2->card,
 328                        min(sizeof(cap->name), sizeof(cap2->card)));
 329                 cap->name[sizeof(cap->name) - 1] = 0;
 330                 if (cap2->capabilities & V4L2_CAP_VIDEO_CAPTURE)
 331                         cap->type |= VID_TYPE_CAPTURE;
 332                 if (cap2->capabilities & V4L2_CAP_TUNER)
 333                         cap->type |= VID_TYPE_TUNER;
 334                 if (cap2->capabilities & V4L2_CAP_VBI_CAPTURE)
 335                         cap->type |= VID_TYPE_TELETEXT;
 336                 if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY)
 337                         cap->type |= VID_TYPE_OVERLAY;
 338                 if (fbuf2.capability & V4L2_FBUF_CAP_LIST_CLIPPING)
 339                         cap->type |= VID_TYPE_CLIPPING;
 340
 341                 cap->channels  = count_inputs(inode, file, drv);
 342                 check_size(inode, file, drv,
 343                            &cap->maxwidth, &cap->maxheight);
 344                 cap->audios    =  0; /* FIXME */
 345                 cap->minwidth  = 48; /* FIXME */
 346                 cap->minheight = 32; /* FIXME */
 347                 break;
 348         }
 349         case VIDIOCGFBUF: /*  get frame buffer  */
 350         {
 351                 struct video_buffer     *buffer = arg;
 352
 353                 memset(buffer, 0, sizeof(*buffer));
 354                 memset(&fbuf2, 0, sizeof(fbuf2));
 355
 356                 err = drv(inode, file, VIDIOC_G_FBUF, &fbuf2);
 357                 if (err < 0) {
 358                         dprintk("VIDIOCGFBUF / VIDIOC_G_FBUF: %d\n", err);
 359                         break;
 360                 }
 361                 buffer->base   = fbuf2.base;
 362                 buffer->height = fbuf2.fmt.height;
 363                 buffer->width  = fbuf2.fmt.width;
 364
 365                 switch (fbuf2.fmt.pixelformat) {
 366                 case V4L2_PIX_FMT_RGB332:
 367                         buffer->depth = 8;
 368                         break;
 369                 case V4L2_PIX_FMT_RGB555:
 370                         buffer->depth = 15;
 371                         break;
 372                 case V4L2_PIX_FMT_RGB565:
 373                         buffer->depth = 16;
 374                         break;
 375                 case V4L2_PIX_FMT_BGR24:
 376                         buffer->depth = 24;
 377                         break;
 378                 case V4L2_PIX_FMT_BGR32:
 379                         buffer->depth = 32;
 380                         break;
 381                 default:
 382                         buffer->depth = 0;
 383                 }
 384                 if (fbuf2.fmt.bytesperline) {
 385                         buffer->bytesperline = fbuf2.fmt.bytesperline;
 386                         if (!buffer->depth && buffer->width)
 387                                 buffer->depth   = ((fbuf2.fmt.bytesperline<<3)
 388                                                   + (buffer->width-1))
 389                                                   / buffer->width;
 390                 } else {
 391                         buffer->bytesperline =
 392                                 (buffer->width * buffer->depth + 7) & 7;
 393                         buffer->bytesperline >>= 3;
 394                 }
 395                 break;
 396         }
 397         case VIDIOCSFBUF: /*  set frame buffer  */
 398         {
 399                 struct video_buffer     *buffer = arg;
 400
 401                 memset(&fbuf2, 0, sizeof(fbuf2));
 402                 fbuf2.base       = buffer->base;
 403                 fbuf2.fmt.height = buffer->height;
 404                 fbuf2.fmt.width  = buffer->width;
 405                 switch (buffer->depth) {
 406                 case 8:
 407                         fbuf2.fmt.pixelformat = V4L2_PIX_FMT_RGB332;
 408                         break;
 409                 case 15:
 410                         fbuf2.fmt.pixelformat = V4L2_PIX_FMT_RGB555;
 411                         break;
 412                 case 16:
 413                         fbuf2.fmt.pixelformat = V4L2_PIX_FMT_RGB565;
 414                         break;
 415                 case 24:
 416                         fbuf2.fmt.pixelformat = V4L2_PIX_FMT_BGR24;
 417                         break;
 418                 case 32:
 419                         fbuf2.fmt.pixelformat = V4L2_PIX_FMT_BGR32;
 420                         break;
 421                 }
 422                 fbuf2.fmt.bytesperline = buffer->bytesperline;
 423                 err = drv(inode, file, VIDIOC_S_FBUF, &fbuf2);
 424                 if (err < 0)
 425                         dprintk("VIDIOCSFBUF / VIDIOC_S_FBUF: %d\n", err);
 426                 break;
 427         }
 428         case VIDIOCGWIN: /*  get window or capture dimensions  */
 429         {
 430                 struct video_window     *win = arg;
 431
 432                 fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
 433                 if (!fmt2) {
 434                         err = -ENOMEM;
 435                         break;
 436                 }
 437                 memset(win, 0, sizeof(*win));
 438
 439                 fmt2->type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
 440                 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
 441                 if (err < 0)
 442                         dprintk("VIDIOCGWIN / VIDIOC_G_WIN: %d\n", err);
 443                 if (err == 0) {
 444                         win->x         = fmt2->fmt.win.w.left;
 445                         win->y         = fmt2->fmt.win.w.top;
 446                         win->width     = fmt2->fmt.win.w.width;
 447                         win->height    = fmt2->fmt.win.w.height;
 448                         win->chromakey = fmt2->fmt.win.chromakey;
 449                         win->clips     = NULL;
 450                         win->clipcount = 0;
 451                         break;
 452                 }
 453
 454                 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 455                 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
 456                 if (err < 0) {
 457                         dprintk("VIDIOCGWIN / VIDIOC_G_FMT: %d\n", err);
 458                         break;
 459                 }
 460                 win->x         = 0;
 461                 win->y         = 0;
 462                 win->width     = fmt2->fmt.pix.width;
 463                 win->height    = fmt2->fmt.pix.height;
 464                 win->chromakey = 0;
 465                 win->clips     = NULL;
 466                 win->clipcount = 0;
 467                 break;
 468         }
 469         case VIDIOCSWIN: /*  set window and/or capture dimensions  */
 470         {
 471                 struct video_window     *win = arg;
 472                 int err1, err2;
 473
 474                 fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
 475                 if (!fmt2) {
 476                         err = -ENOMEM;
 477                         break;
 478                 }
 479                 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 480                 drv(inode, file, VIDIOC_STREAMOFF, &fmt2->type);
 481                 err1 = drv(inode, file, VIDIOC_G_FMT, fmt2);
 482                 if (err1 < 0)
 483                         dprintk("VIDIOCSWIN / VIDIOC_G_FMT: %d\n", err);
 484                 if (err1 == 0) {
 485                         fmt2->fmt.pix.width  = win->width;
 486                         fmt2->fmt.pix.height = win->height;
 487                         fmt2->fmt.pix.field  = V4L2_FIELD_ANY;
 488                         fmt2->fmt.pix.bytesperline = 0;
 489                         err = drv(inode, file, VIDIOC_S_FMT, fmt2);
 490                         if (err < 0)
 491                                 dprintk("VIDIOCSWIN / VIDIOC_S_FMT #1: %d\n",
 492                                         err);
 493                         win->width  = fmt2->fmt.pix.width;
 494                         win->height = fmt2->fmt.pix.height;
 495                 }
 496
 497                 memset(fmt2, 0, sizeof(*fmt2));
 498                 fmt2->type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
 499                 fmt2->fmt.win.w.left    = win->x;
 500                 fmt2->fmt.win.w.top     = win->y;
 501                 fmt2->fmt.win.w.width   = win->width;
 502                 fmt2->fmt.win.w.height  = win->height;
 503                 fmt2->fmt.win.chromakey = win->chromakey;
 504                 fmt2->fmt.win.clips     = (void __user *)win->clips;
 505                 fmt2->fmt.win.clipcount = win->clipcount;
 506                 err2 = drv(inode, file, VIDIOC_S_FMT, fmt2);
 507                 if (err2 < 0)
 508                         dprintk("VIDIOCSWIN / VIDIOC_S_FMT #2: %d\n", err);
 509
 510                 if (err1 != 0 && err2 != 0)
 511                         err = err1;
 512                 break;
 513         }
 514         case VIDIOCCAPTURE: /*  turn on/off preview  */
 515         {
 516                 int *on = arg;
 517
 518                 if (0 == *on) {
 519                         /* dirty hack time.  But v4l1 has no STREAMOFF
 520                          * equivalent in the API, and this one at
 521                          * least comes close ... */
 522                         drv(inode, file, VIDIOC_STREAMOFF, &captype);
 523                 }
 524                 err = drv(inode, file, VIDIOC_OVERLAY, arg);
 525                 if (err < 0)
 526                         dprintk("VIDIOCCAPTURE / VIDIOC_PREVIEW: %d\n", err);
 527                 break;
 528         }
 529         case VIDIOCGCHAN: /*  get input information  */
 530         {
 531                 struct video_channel    *chan = arg;
 532
 533                 memset(&input2, 0, sizeof(input2));
 534                 input2.index = chan->channel;
 535                 err = drv(inode, file, VIDIOC_ENUMINPUT, &input2);
 536                 if (err < 0) {
 537                         dprintk("VIDIOCGCHAN / VIDIOC_ENUMINPUT: "
 538                                 "channel=%d err=%d\n", chan->channel, err);
 539                         break;
 540                 }
 541                 chan->channel = input2.index;
 542                 memcpy(chan->name, input2.name,
 543                        min(sizeof(chan->name), sizeof(input2.name)));
 544                 chan->name[sizeof(chan->name) - 1] = 0;
 545                 chan->tuners = (input2.type == V4L2_INPUT_TYPE_TUNER) ? 1 : 0;
 546                 chan->flags = (chan->tuners) ? VIDEO_VC_TUNER : 0;
 547                 switch (input2.type) {
 548                 case V4L2_INPUT_TYPE_TUNER:
 549                         chan->type = VIDEO_TYPE_TV;
 550                         break;
 551                 default:
 552                 case V4L2_INPUT_TYPE_CAMERA:
 553                         chan->type = VIDEO_TYPE_CAMERA;
 554                         break;
 555                 }
 556                 chan->norm = 0;
 557                 err = drv(inode, file, VIDIOC_G_STD, &sid);
 558                 if (err < 0)
 559                         dprintk("VIDIOCGCHAN / VIDIOC_G_STD: %d\n", err);
 560                 if (err == 0) {
 561                         if (sid & V4L2_STD_PAL)
 562                                 chan->norm = VIDEO_MODE_PAL;
 563                         if (sid & V4L2_STD_NTSC)
 564                                 chan->norm = VIDEO_MODE_NTSC;
 565                         if (sid & V4L2_STD_SECAM)
 566                                 chan->norm = VIDEO_MODE_SECAM;
 567                 }
 568                 break;
 569         }
 570         case VIDIOCSCHAN: /*  set input  */
 571         {
 572                 struct video_channel *chan = arg;
 573
 574                 sid = 0;
 575                 err = drv(inode, file, VIDIOC_S_INPUT, &chan->channel);
 576                 if (err < 0)
 577                         dprintk("VIDIOCSCHAN / VIDIOC_S_INPUT: %d\n", err);
 578                 switch (chan->norm) {
 579                 case VIDEO_MODE_PAL:
 580                         sid = V4L2_STD_PAL;
 581                         break;
 582                 case VIDEO_MODE_NTSC:
 583                         sid = V4L2_STD_NTSC;
 584                         break;
 585                 case VIDEO_MODE_SECAM:
 586                         sid = V4L2_STD_SECAM;
 587                         break;
 588                 }
 589                 if (0 != sid) {
 590                         err = drv(inode, file, VIDIOC_S_STD, &sid);
 591                         if (err < 0)
 592                                 dprintk("VIDIOCSCHAN / VIDIOC_S_STD: %d\n", err);
 593                 }
 594                 break;
 595         }
 596         case VIDIOCGPICT: /*  get tone controls & partial capture format  */
 597         {
 598                 struct video_picture    *pict = arg;
 599
 600                 fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
 601                 if (!fmt2) {
 602                         err = -ENOMEM;
 603                         break;
 604                 }
 605
 606                 pict->brightness = get_v4l_control(inode, file,
 607                                                    V4L2_CID_BRIGHTNESS, drv);
 608                 pict->hue = get_v4l_control(inode, file,
 609                                             V4L2_CID_HUE, drv);
 610                 pict->contrast = get_v4l_control(inode, file,
 611                                                  V4L2_CID_CONTRAST, drv);
 612                 pict->colour = get_v4l_control(inode, file,
 613                                                V4L2_CID_SATURATION, drv);
 614                 pict->whiteness = get_v4l_control(inode, file,
 615                                                   V4L2_CID_WHITENESS, drv);
 616
 617                 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 618                 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
 619                 if (err < 0) {
 620                         dprintk("VIDIOCGPICT / VIDIOC_G_FMT: %d\n", err);
 621                         break;
 622                 }
 623
 624                 pict->depth   = ((fmt2->fmt.pix.bytesperline << 3)
 625                                  + (fmt2->fmt.pix.width - 1))
 626                                  / fmt2->fmt.pix.width;
 627                 pict->palette = pixelformat_to_palette(
 628                         fmt2->fmt.pix.pixelformat);
 629                 break;
 630         }
 631         case VIDIOCSPICT: /*  set tone controls & partial capture format  */
 632         {
 633                 struct video_picture    *pict = arg;
 634                 int mem_err = 0, ovl_err = 0;
 635
 636                 fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
 637                 if (!fmt2) {
 638                         err = -ENOMEM;
 639                         break;
 640                 }
 641                 memset(&fbuf2, 0, sizeof(fbuf2));
 642
 643                 set_v4l_control(inode, file,
 644                                 V4L2_CID_BRIGHTNESS, pict->brightness, drv);
 645                 set_v4l_control(inode, file,
 646                                 V4L2_CID_HUE, pict->hue, drv);
 647                 set_v4l_control(inode, file,
 648                                 V4L2_CID_CONTRAST, pict->contrast, drv);
 649                 set_v4l_control(inode, file,
 650                                 V4L2_CID_SATURATION, pict->colour, drv);
 651                 set_v4l_control(inode, file,
 652                                 V4L2_CID_WHITENESS, pict->whiteness, drv);
 653                 /*
 654                  * V4L1 uses this ioctl to set both memory capture and overlay
 655                  * pixel format, while V4L2 has two different ioctls for this.
 656                  * Some cards may not support one or the other, and may support
 657                  * different pixel formats for memory vs overlay.
 658                  */
 659
 660                 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 661                 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
 662                 /* If VIDIOC_G_FMT failed, then the driver likely doesn't
 663                    support memory capture.  Trying to set the memory capture
 664                    parameters would be pointless.  */
 665                 if (err < 0) {
 666                         dprintk("VIDIOCSPICT / VIDIOC_G_FMT: %d\n", err);
 667                         mem_err = -1000;  /* didn't even try */
 668                 } else if (fmt2->fmt.pix.pixelformat !=
 669                          palette_to_pixelformat(pict->palette)) {
 670                         fmt2->fmt.pix.pixelformat = palette_to_pixelformat(
 671                                 pict->palette);
 672                         mem_err = drv(inode, file, VIDIOC_S_FMT, fmt2);
 673                         if (mem_err < 0)
 674                                 dprintk("VIDIOCSPICT / VIDIOC_S_FMT: %d\n",
 675                                         mem_err);
 676                 }
 677
 678                 err = drv(inode, file, VIDIOC_G_FBUF, &fbuf2);
 679                 /* If VIDIOC_G_FBUF failed, then the driver likely doesn't
 680                    support overlay.  Trying to set the overlay parameters
 681                    would be quite pointless.  */
 682                 if (err < 0) {
 683                         dprintk("VIDIOCSPICT / VIDIOC_G_FBUF: %d\n", err);
 684                         ovl_err = -1000;  /* didn't even try */
 685                 } else if (fbuf2.fmt.pixelformat !=
 686                          palette_to_pixelformat(pict->palette)) {
 687                         fbuf2.fmt.pixelformat = palette_to_pixelformat(
 688                                 pict->palette);
 689                         ovl_err = drv(inode, file, VIDIOC_S_FBUF, &fbuf2);
 690                         if (ovl_err < 0)
 691                                 dprintk("VIDIOCSPICT / VIDIOC_S_FBUF: %d\n",
 692                                         ovl_err);
 693                 }
 694                 if (ovl_err < 0 && mem_err < 0) {
 695                         /* ioctl failed, couldn't set either parameter */
 696                         if (mem_err != -1000)
 697                                 err = mem_err;
 698                         else if (ovl_err == -EPERM)
 699                                 err = 0;
 700                         else
 701                                 err = ovl_err;
 702                 } else
 703                         err = 0;
 704                 break;
 705         }
 706         case VIDIOCGTUNER: /*  get tuner information  */
 707         {
 708                 struct video_tuner      *tun = arg;
 709
 710                 memset(&tun2, 0, sizeof(tun2));
 711                 err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
 712                 if (err < 0) {
 713                         dprintk("VIDIOCGTUNER / VIDIOC_G_TUNER: %d\n", err);
 714                         break;
 715                 }
 716                 memcpy(tun->name, tun2.name,
 717                        min(sizeof(tun->name), sizeof(tun2.name)));
 718                 tun->name[sizeof(tun->name) - 1] = 0;
 719                 tun->rangelow = tun2.rangelow;
 720                 tun->rangehigh = tun2.rangehigh;
 721                 tun->flags = 0;
 722                 tun->mode = VIDEO_MODE_AUTO;
 723
 724                 for (i = 0; i < 64; i++) {
 725                         memset(&std2, 0, sizeof(std2));
 726                         std2.index = i;
 727                         if (0 != drv(inode, file, VIDIOC_ENUMSTD, &std2))
 728                                 break;
 729                         if (std2.id & V4L2_STD_PAL)
 730                                 tun->flags |= VIDEO_TUNER_PAL;
 731                         if (std2.id & V4L2_STD_NTSC)
 732                                 tun->flags |= VIDEO_TUNER_NTSC;
 733                         if (std2.id & V4L2_STD_SECAM)
 734                                 tun->flags |= VIDEO_TUNER_SECAM;
 735                 }
 736
 737                 err = drv(inode, file, VIDIOC_G_STD, &sid);
 738                 if (err < 0)
 739                         dprintk("VIDIOCGTUNER / VIDIOC_G_STD: %d\n", err);
 740                 if (err == 0) {
 741                         if (sid & V4L2_STD_PAL)
 742                                 tun->mode = VIDEO_MODE_PAL;
 743                         if (sid & V4L2_STD_NTSC)
 744                                 tun->mode = VIDEO_MODE_NTSC;
 745                         if (sid & V4L2_STD_SECAM)
 746                                 tun->mode = VIDEO_MODE_SECAM;
 747                 }
 748
 749                 if (tun2.capability & V4L2_TUNER_CAP_LOW)
 750                         tun->flags |= VIDEO_TUNER_LOW;
 751                 if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO)
 752                         tun->flags |= VIDEO_TUNER_STEREO_ON;
 753                 tun->signal = tun2.signal;
 754                 break;
 755         }
 756         case VIDIOCSTUNER: /*  select a tuner input  */
 757         {
 758                 struct video_tuner      *tun = arg;
 759                 struct v4l2_tuner       t;
 760                 memset(&t, 0, sizeof(t));
 761
 762                 t.index = tun->tuner;
 763
 764                 err = drv(inode, file, VIDIOC_S_INPUT, &t);
 765                 if (err < 0)
 766                         dprintk("VIDIOCSTUNER / VIDIOC_S_INPUT: %d\n", err);
 767
 768                 break;
 769         }
 770         case VIDIOCGFREQ: /*  get frequency  */
 771         {
 772                 unsigned long *freq = arg;
 773                 memset(&freq2, 0, sizeof(freq2));
 774
 775                 freq2.tuner = 0;
 776                 err = drv(inode, file, VIDIOC_G_FREQUENCY, &freq2);
 777                 if (err < 0)
 778                         dprintk("VIDIOCGFREQ / VIDIOC_G_FREQUENCY: %d\n", err);
 779                 if (0 == err)
 780                         *freq = freq2.frequency;
 781                 break;
 782         }
 783         case VIDIOCSFREQ: /*  set frequency  */
 784         {
 785                 unsigned long *freq = arg;
 786                 memset(&freq2, 0, sizeof(freq2));
 787
 788                 drv(inode, file, VIDIOC_G_FREQUENCY, &freq2);
 789                 freq2.frequency = *freq;
 790                 err = drv(inode, file, VIDIOC_S_FREQUENCY, &freq2);
 791                 if (err < 0)
 792                         dprintk("VIDIOCSFREQ / VIDIOC_S_FREQUENCY: %d\n", err);
 793                 break;
 794         }
 795         case VIDIOCGAUDIO: /*  get audio properties/controls  */
 796         {
 797                 struct video_audio      *aud = arg;
 798                 memset(&aud2, 0, sizeof(aud2));
 799
 800                 err = drv(inode, file, VIDIOC_G_AUDIO, &aud2);
 801                 if (err < 0) {
 802                         dprintk("VIDIOCGAUDIO / VIDIOC_G_AUDIO: %d\n", err);
 803                         break;
 804                 }
 805                 memcpy(aud->name, aud2.name,
 806                        min(sizeof(aud->name), sizeof(aud2.name)));
 807                 aud->name[sizeof(aud->name) - 1] = 0;
 808                 aud->audio = aud2.index;
 809                 aud->flags = 0;
 810                 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_VOLUME, drv);
 811                 if (i >= 0) {
 812                         aud->volume = i;
 813                         aud->flags |= VIDEO_AUDIO_VOLUME;
 814                 }
 815                 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_BASS, drv);
 816                 if (i >= 0) {
 817                         aud->bass = i;
 818                         aud->flags |= VIDEO_AUDIO_BASS;
 819                 }
 820                 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_TREBLE, drv);
 821                 if (i >= 0) {
 822                         aud->treble = i;
 823                         aud->flags |= VIDEO_AUDIO_TREBLE;
 824                 }
 825                 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_BALANCE, drv);
 826                 if (i >= 0) {
 827                         aud->balance = i;
 828                         aud->flags |= VIDEO_AUDIO_BALANCE;
 829                 }
 830                 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_MUTE, drv);
 831                 if (i >= 0) {
 832                         if (i)
 833                                 aud->flags |= VIDEO_AUDIO_MUTE;
 834                         aud->flags |= VIDEO_AUDIO_MUTABLE;
 835                 }
 836                 aud->step = 1;
 837                 qctrl2.id = V4L2_CID_AUDIO_VOLUME;
 838                 if (drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2) == 0 &&
 839                     !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED))
 840                         aud->step = qctrl2.step;
 841                 aud->mode = 0;
 842
 843                 memset(&tun2, 0, sizeof(tun2));
 844                 err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
 845                 if (err < 0) {
 846                         dprintk("VIDIOCGAUDIO / VIDIOC_G_TUNER: %d\n", err);
 847                         err = 0;
 848                         break;
 849                 }
 850
 851                 if (tun2.rxsubchans & V4L2_TUNER_SUB_LANG2)
 852                         aud->mode = VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2;
 853                 else if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO)
 854                         aud->mode = VIDEO_SOUND_STEREO;
 855                 else if (tun2.rxsubchans & V4L2_TUNER_SUB_MONO)
 856                         aud->mode = VIDEO_SOUND_MONO;
 857                 break;
 858         }
 859         case VIDIOCSAUDIO: /*  set audio controls  */
 860         {
 861                 struct video_audio      *aud = arg;
 862
 863                 memset(&aud2, 0, sizeof(aud2));
 864                 memset(&tun2, 0, sizeof(tun2));
 865
 866                 aud2.index = aud->audio;
 867                 err = drv(inode, file, VIDIOC_S_AUDIO, &aud2);
 868                 if (err < 0) {
 869                         dprintk("VIDIOCSAUDIO / VIDIOC_S_AUDIO: %d\n", err);
 870                         break;
 871                 }
 872
 873                 set_v4l_control(inode, file, V4L2_CID_AUDIO_VOLUME,
 874                                 aud->volume, drv);
 875                 set_v4l_control(inode, file, V4L2_CID_AUDIO_BASS,
 876                                 aud->bass, drv);
 877                 set_v4l_control(inode, file, V4L2_CID_AUDIO_TREBLE,
 878                                 aud->treble, drv);
 879                 set_v4l_control(inode, file, V4L2_CID_AUDIO_BALANCE,
 880                                 aud->balance, drv);
 881                 set_v4l_control(inode, file, V4L2_CID_AUDIO_MUTE,
 882                                 !!(aud->flags & VIDEO_AUDIO_MUTE), drv);
 883
 884                 err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
 885                 if (err < 0)
 886                         dprintk("VIDIOCSAUDIO / VIDIOC_G_TUNER: %d\n", err);
 887                 if (err == 0) {
 888                         switch (aud->mode) {
 889                         default:
 890                         case VIDEO_SOUND_MONO:
 891                         case VIDEO_SOUND_LANG1:
 892                                 tun2.audmode = V4L2_TUNER_MODE_MONO;
 893                                 break;
 894                         case VIDEO_SOUND_STEREO:
 895                                 tun2.audmode = V4L2_TUNER_MODE_STEREO;
 896                                 break;
 897                         case VIDEO_SOUND_LANG2:
 898                                 tun2.audmode = V4L2_TUNER_MODE_LANG2;
 899                                 break;
 900                         }
 901                         err = drv(inode, file, VIDIOC_S_TUNER, &tun2);
 902                         if (err < 0)
 903                                 dprintk("VIDIOCSAUDIO / VIDIOC_S_TUNER: %d\n", err);
 904                 }
 905                 err = 0;
 906                 break;
 907         }
 908         case VIDIOCMCAPTURE: /*  capture a frame  */
 909         {
 910                 struct video_mmap       *mm = arg;
 911
 912                 fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
 913                 if (!fmt2) {
 914                         err = -ENOMEM;
 915                         break;
 916                 }
 917                 memset(&buf2, 0, sizeof(buf2));
 918
 919                 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 920                 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
 921                 if (err < 0) {
 922                         dprintk("VIDIOCMCAPTURE / VIDIOC_G_FMT: %d\n", err);
 923                         break;
 924                 }
 925                 if (mm->width   != fmt2->fmt.pix.width  ||
 926                     mm->height  != fmt2->fmt.pix.height ||
 927                     palette_to_pixelformat(mm->format) !=
 928                     fmt2->fmt.pix.pixelformat) {
 929                         /* New capture format...  */
 930                         fmt2->fmt.pix.width = mm->width;
 931                         fmt2->fmt.pix.height = mm->height;
 932                         fmt2->fmt.pix.pixelformat =
 933                                 palette_to_pixelformat(mm->format);
 934                         fmt2->fmt.pix.field = V4L2_FIELD_ANY;
 935                         fmt2->fmt.pix.bytesperline = 0;
 936                         err = drv(inode, file, VIDIOC_S_FMT, fmt2);
 937                         if (err < 0) {
 938                                 dprintk("VIDIOCMCAPTURE / VIDIOC_S_FMT: %d\n", err);
 939                                 break;
 940                         }
 941                 }
 942                 buf2.index = mm->frame;
 943                 buf2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 944                 err = drv(inode, file, VIDIOC_QUERYBUF, &buf2);
 945                 if (err < 0) {
 946                         dprintk("VIDIOCMCAPTURE / VIDIOC_QUERYBUF: %d\n", err);
 947                         break;
 948                 }
 949                 err = drv(inode, file, VIDIOC_QBUF, &buf2);
 950                 if (err < 0) {
 951                         dprintk("VIDIOCMCAPTURE / VIDIOC_QBUF: %d\n", err);
 952                         break;
 953                 }
 954                 err = drv(inode, file, VIDIOC_STREAMON, &captype);
 955                 if (err < 0)
 956                         dprintk("VIDIOCMCAPTURE / VIDIOC_STREAMON: %d\n", err);
 957                 break;
 958         }
 959         case VIDIOCSYNC: /*  wait for a frame  */
 960         {
 961                 int                     *i = arg;
 962
 963                 memset(&buf2, 0, sizeof(buf2));
 964                 buf2.index = *i;
 965                 buf2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 966                 err = drv(inode, file, VIDIOC_QUERYBUF, &buf2);
 967                 if (err < 0) {
 968                         /*  No such buffer */
 969                         dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %d\n", err);
 970                         break;
 971                 }
 972                 if (!(buf2.flags & V4L2_BUF_FLAG_MAPPED)) {
 973                         /* Buffer is not mapped  */
 974                         err = -EINVAL;
 975                         break;
 976                 }
 977
 978                 /* make sure capture actually runs so we don't block forever */
 979                 err = drv(inode, file, VIDIOC_STREAMON, &captype);
 980                 if (err < 0) {
 981                         dprintk("VIDIOCSYNC / VIDIOC_STREAMON: %d\n", err);
 982                         break;
 983                 }
 984
 985                 /*  Loop as long as the buffer is queued, but not done  */
 986                 while ((buf2.flags &
 987                         (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE))
 988                        == V4L2_BUF_FLAG_QUEUED) {
 989                         err = poll_one(file);
 990                         if (err < 0 ||  /* error or sleep was interrupted  */
 991                             err == 0)   /* timeout? Shouldn't occur.  */
 992                                 break;
 993                         err = drv(inode, file, VIDIOC_QUERYBUF, &buf2);
 994                         if (err < 0)
 995                                 dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %d\n", err);
 996                 }
 997                 if (!(buf2.flags & V4L2_BUF_FLAG_DONE)) /* not done */
 998                         break;
 999                 do {
1000                         err = drv(inode, file, VIDIOC_DQBUF, &buf2);
1001                         if (err < 0)
1002                                 dprintk("VIDIOCSYNC / VIDIOC_DQBUF: %d\n", err);
1003                 } while (err == 0 && buf2.index != *i);
1004                 break;
1005         }
1006
1007         case VIDIOCGVBIFMT: /* query VBI data capture format */
1008         {
1009                 struct vbi_format      *fmt = arg;
1010
1011                 fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
1012                 if (!fmt2) {
1013                         err = -ENOMEM;
1014                         break;
1015                 }
1016                 fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1017
1018                 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
1019                 if (err < 0) {
1020                         dprintk("VIDIOCGVBIFMT / VIDIOC_G_FMT: %d\n", err);
1021                         break;
1022                 }
1023                 if (fmt2->fmt.vbi.sample_format != V4L2_PIX_FMT_GREY) {
1024                         err = -EINVAL;
1025                         break;
1026                 }
1027                 memset(fmt, 0, sizeof(*fmt));
1028                 fmt->samples_per_line = fmt2->fmt.vbi.samples_per_line;
1029                 fmt->sampling_rate    = fmt2->fmt.vbi.sampling_rate;
1030                 fmt->sample_format    = VIDEO_PALETTE_RAW;
1031                 fmt->start[0]         = fmt2->fmt.vbi.start[0];
1032                 fmt->count[0]         = fmt2->fmt.vbi.count[0];
1033                 fmt->start[1]         = fmt2->fmt.vbi.start[1];
1034                 fmt->count[1]         = fmt2->fmt.vbi.count[1];
1035                 fmt->flags            = fmt2->fmt.vbi.flags & 0x03;
1036                 break;
1037         }
1038         case VIDIOCSVBIFMT:
1039         {
1040                 struct vbi_format      *fmt = arg;
1041
1042                 if (VIDEO_PALETTE_RAW != fmt->sample_format) {
1043                         err = -EINVAL;
1044                         break;
1045                 }
1046
1047                 fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
1048                 if (!fmt2) {
1049                         err = -ENOMEM;
1050                         break;
1051                 }
1052                 fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1053                 fmt2->fmt.vbi.samples_per_line = fmt->samples_per_line;
1054                 fmt2->fmt.vbi.sampling_rate    = fmt->sampling_rate;
1055                 fmt2->fmt.vbi.sample_format    = V4L2_PIX_FMT_GREY;
1056                 fmt2->fmt.vbi.start[0]         = fmt->start[0];
1057                 fmt2->fmt.vbi.count[0]         = fmt->count[0];
1058                 fmt2->fmt.vbi.start[1]         = fmt->start[1];
1059                 fmt2->fmt.vbi.count[1]         = fmt->count[1];
1060                 fmt2->fmt.vbi.flags            = fmt->flags;
1061                 err = drv(inode, file, VIDIOC_TRY_FMT, fmt2);
1062                 if (err < 0) {
1063                         dprintk("VIDIOCSVBIFMT / VIDIOC_TRY_FMT: %d\n", err);
1064                         break;
1065                 }
1066
1067                 if (fmt2->fmt.vbi.samples_per_line != fmt->samples_per_line ||
1068                     fmt2->fmt.vbi.sampling_rate    != fmt->sampling_rate    ||
1069                     fmt2->fmt.vbi.sample_format    != V4L2_PIX_FMT_GREY     ||
1070                     fmt2->fmt.vbi.start[0]         != fmt->start[0]         ||
1071                     fmt2->fmt.vbi.count[0]         != fmt->count[0]         ||
1072                     fmt2->fmt.vbi.start[1]         != fmt->start[1]         ||
1073                     fmt2->fmt.vbi.count[1]         != fmt->count[1]         ||
1074                     fmt2->fmt.vbi.flags            != fmt->flags) {
1075                         err = -EINVAL;
1076                         break;
1077                 }
1078                 err = drv(inode, file, VIDIOC_S_FMT, fmt2);
1079                 if (err < 0)
1080                         dprintk("VIDIOCSVBIFMT / VIDIOC_S_FMT: %d\n", err);
1081                 break;
1082         }
1083
1084         default:
1085                 err = -ENOIOCTLCMD;
1086                 break;
1087         }
1088
1089         kfree(cap2);
1090         kfree(fmt2);
1091         return err;
1092 }
1093 EXPORT_SYMBOL(v4l_compat_translate_ioctl);
1094
1095 /*
1096  * Local variables:
1097  * c-basic-offset: 8
1098  * End:
1099  */