git.oblomov.eu Git - linux-2.6/blob - 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  = 0;
  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...)    if (debug) \
  50         printk(KERN_DEBUG "v4l1-compat: " fmt , ## arg)
  51
  52 /*
  53  *      I O C T L   T R A N S L A T I O N
  54  *
  55  *      From here on down is the code for translating the numerous
  56  *      ioctl commands from the old API to the new API.
  57  */
  58
  59 static int
  60 get_v4l_control(struct inode            *inode,
  61                 struct file             *file,
  62                 int                     cid,
  63                 v4l2_kioctl             drv)
  64 {
  65         struct v4l2_queryctrl   qctrl2;
  66         struct v4l2_control     ctrl2;
  67         int                     err;
  68
  69         qctrl2.id = cid;
  70         err = drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2);
  71         if (err < 0)
  72                 dprintk("VIDIOC_QUERYCTRL: %d\n",err);
  73         if (err == 0 &&
  74             !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED))
  75         {
  76                 ctrl2.id = qctrl2.id;
  77                 err = drv(inode, file, VIDIOC_G_CTRL, &ctrl2);
  78                 if (err < 0) {
  79                         dprintk("VIDIOC_G_CTRL: %d\n",err);
  80                         return 0;
  81                 }
  82                 return ((ctrl2.value - qctrl2.minimum) * 65535
  83                          + (qctrl2.maximum - qctrl2.minimum) / 2)
  84                         / (qctrl2.maximum - qctrl2.minimum);
  85         }
  86         return 0;
  87 }
  88
  89 static int
  90 set_v4l_control(struct inode            *inode,
  91                 struct file             *file,
  92                 int                     cid,
  93                 int                     value,
  94                 v4l2_kioctl             drv)
  95 {
  96         struct v4l2_queryctrl   qctrl2;
  97         struct v4l2_control     ctrl2;
  98         int                     err;
  99
 100         qctrl2.id = cid;
 101         err = drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2);
 102         if (err < 0)
 103                 dprintk("VIDIOC_QUERYCTRL: %d\n",err);
 104         if (err == 0 &&
 105             !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED) &&
 106             !(qctrl2.flags & V4L2_CTRL_FLAG_GRABBED))
 107         {
 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 const static 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         {
 162         case V4L2_PIX_FMT_GREY:
 163                 palette = VIDEO_PALETTE_GREY;
 164                 break;
 165         case V4L2_PIX_FMT_RGB555:
 166                 palette = VIDEO_PALETTE_RGB555;
 167                 break;
 168         case V4L2_PIX_FMT_RGB565:
 169                 palette = VIDEO_PALETTE_RGB565;
 170                 break;
 171         case V4L2_PIX_FMT_BGR24:
 172                 palette = VIDEO_PALETTE_RGB24;
 173                 break;
 174         case V4L2_PIX_FMT_BGR32:
 175                 palette = VIDEO_PALETTE_RGB32;
 176                 break;
 177         /* yuv packed pixel */
 178         case V4L2_PIX_FMT_YUYV:
 179                 palette = VIDEO_PALETTE_YUYV;
 180                 break;
 181         case V4L2_PIX_FMT_UYVY:
 182                 palette = VIDEO_PALETTE_UYVY;
 183                 break;
 184         /* yuv planar */
 185         case V4L2_PIX_FMT_YUV410:
 186                 palette = VIDEO_PALETTE_YUV420;
 187                 break;
 188         case V4L2_PIX_FMT_YUV420:
 189                 palette = VIDEO_PALETTE_YUV420;
 190                 break;
 191         case V4L2_PIX_FMT_YUV411P:
 192                 palette = VIDEO_PALETTE_YUV411P;
 193                 break;
 194         case V4L2_PIX_FMT_YUV422P:
 195                 palette = VIDEO_PALETTE_YUV422P;
 196                 break;
 197         }
 198         return palette;
 199 }
 200
 201 /* ----------------------------------------------------------------- */
 202
 203 static int poll_one(struct file *file)
 204 {
 205         int retval = 1;
 206         poll_table *table;
 207         struct poll_wqueues pwq;
 208
 209         poll_initwait(&pwq);
 210         table = &pwq.pt;
 211         for (;;) {
 212                 int mask;
 213                 set_current_state(TASK_INTERRUPTIBLE);
 214                 mask = file->f_op->poll(file, table);
 215                 if (mask & POLLIN)
 216                         break;
 217                 table = NULL;
 218                 if (signal_pending(current)) {
 219                         retval = -ERESTARTSYS;
 220                         break;
 221                 }
 222                 schedule();
 223         }
 224         set_current_state(TASK_RUNNING);
 225         poll_freewait(&pwq);
 226         return retval;
 227 }
 228
 229 static int count_inputs(struct inode         *inode,
 230                         struct file          *file,
 231                         v4l2_kioctl          drv)
 232 {
 233         struct v4l2_input input2;
 234         int i;
 235
 236         for (i = 0;; i++) {
 237                 memset(&input2,0,sizeof(input2));
 238                 input2.index = i;
 239                 if (0 != drv(inode,file,VIDIOC_ENUMINPUT, &input2))
 240                         break;
 241         }
 242         return i;
 243 }
 244
 245 static int check_size(struct inode         *inode,
 246                       struct file          *file,
 247                       v4l2_kioctl          drv,
 248                       int *maxw, int *maxh)
 249 {
 250         struct v4l2_fmtdesc desc2;
 251         struct v4l2_format  fmt2;
 252
 253         memset(&desc2,0,sizeof(desc2));
 254         memset(&fmt2,0,sizeof(fmt2));
 255
 256         desc2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 257         if (0 != drv(inode,file,VIDIOC_ENUM_FMT, &desc2))
 258                 goto done;
 259
 260         fmt2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 261         fmt2.fmt.pix.width       = 10000;
 262         fmt2.fmt.pix.height      = 10000;
 263         fmt2.fmt.pix.pixelformat = desc2.pixelformat;
 264         if (0 != drv(inode,file,VIDIOC_TRY_FMT, &fmt2))
 265                 goto done;
 266
 267         *maxw = fmt2.fmt.pix.width;
 268         *maxh = fmt2.fmt.pix.height;
 269
 270  done:
 271         return 0;
 272 }
 273
 274 /* ----------------------------------------------------------------- */
 275
 276 /*
 277  *      This function is exported.
 278  */
 279 int
 280 v4l_compat_translate_ioctl(struct inode         *inode,
 281                            struct file          *file,
 282                            int                  cmd,
 283                            void                 *arg,
 284                            v4l2_kioctl          drv)
 285 {
 286         struct v4l2_capability  *cap2 = NULL;
 287         struct v4l2_format      *fmt2 = NULL;
 288         enum v4l2_buf_type      captype = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 289
 290         struct v4l2_framebuffer fbuf2;
 291         struct v4l2_input       input2;
 292         struct v4l2_tuner       tun2;
 293         struct v4l2_standard    std2;
 294         struct v4l2_frequency   freq2;
 295         struct v4l2_audio       aud2;
 296         struct v4l2_queryctrl   qctrl2;
 297         struct v4l2_buffer      buf2;
 298         v4l2_std_id             sid;
 299         int i, err = 0;
 300
 301         switch (cmd) {
 302         case VIDIOCGCAP:        /* capability */
 303         {
 304                 struct video_capability *cap = arg;
 305
 306                 cap2 = kzalloc(sizeof(*cap2), GFP_KERNEL);
 307                 if (!cap2) {
 308                         err = -ENOMEM;
 309                         break;
 310                 }
 311                 memset(cap, 0, sizeof(*cap));
 312                 memset(&fbuf2, 0, sizeof(fbuf2));
 313
 314                 err = drv(inode, file, VIDIOC_QUERYCAP, cap2);
 315                 if (err < 0) {
 316                         dprintk("VIDIOCGCAP / VIDIOC_QUERYCAP: %d\n",err);
 317                         break;
 318                 }
 319                 if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY) {
 320                         err = drv(inode, file, VIDIOC_G_FBUF, &fbuf2);
 321                         if (err < 0) {
 322                                 dprintk("VIDIOCGCAP / VIDIOC_G_FBUF: %d\n",err);
 323                                 memset(&fbuf2, 0, sizeof(fbuf2));
 324                         }
 325                         err = 0;
 326                 }
 327
 328                 memcpy(cap->name, cap2->card,
 329                        min(sizeof(cap->name), sizeof(cap2->card)));
 330                 cap->name[sizeof(cap->name) - 1] = 0;
 331                 if (cap2->capabilities & V4L2_CAP_VIDEO_CAPTURE)
 332                         cap->type |= VID_TYPE_CAPTURE;
 333                 if (cap2->capabilities & V4L2_CAP_TUNER)
 334                         cap->type |= VID_TYPE_TUNER;
 335                 if (cap2->capabilities & V4L2_CAP_VBI_CAPTURE)
 336                         cap->type |= VID_TYPE_TELETEXT;
 337                 if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY)
 338                         cap->type |= VID_TYPE_OVERLAY;
 339                 if (fbuf2.capability & V4L2_FBUF_CAP_LIST_CLIPPING)
 340                         cap->type |= VID_TYPE_CLIPPING;
 341
 342                 cap->channels  = count_inputs(inode,file,drv);
 343                 check_size(inode,file,drv,
 344                            &cap->maxwidth,&cap->maxheight);
 345                 cap->audios    =  0; /* FIXME */
 346                 cap->minwidth  = 48; /* FIXME */
 347                 cap->minheight = 32; /* FIXME */
 348                 break;
 349         }
 350         case VIDIOCGFBUF: /*  get frame buffer  */
 351         {
 352                 struct video_buffer     *buffer = arg;
 353
 354                 memset(buffer, 0, sizeof(*buffer));
 355                 memset(&fbuf2, 0, sizeof(fbuf2));
 356
 357                 err = drv(inode, file, VIDIOC_G_FBUF, &fbuf2);
 358                 if (err < 0) {
 359                         dprintk("VIDIOCGFBUF / VIDIOC_G_FBUF: %d\n",err);
 360                         break;
 361                 }
 362                 buffer->base   = fbuf2.base;
 363                 buffer->height = fbuf2.fmt.height;
 364                 buffer->width  = fbuf2.fmt.width;
 365
 366                 switch (fbuf2.fmt.pixelformat) {
 367                 case V4L2_PIX_FMT_RGB332:
 368                         buffer->depth = 8;
 369                         break;
 370                 case V4L2_PIX_FMT_RGB555:
 371                         buffer->depth = 15;
 372                         break;
 373                 case V4L2_PIX_FMT_RGB565:
 374                         buffer->depth = 16;
 375                         break;
 376                 case V4L2_PIX_FMT_BGR24:
 377                         buffer->depth = 24;
 378                         break;
 379                 case V4L2_PIX_FMT_BGR32:
 380                         buffer->depth = 32;
 381                         break;
 382                 default:
 383                         buffer->depth = 0;
 384                 }
 385                 if (fbuf2.fmt.bytesperline) {
 386                         buffer->bytesperline = fbuf2.fmt.bytesperline;
 387                         if (!buffer->depth && buffer->width)
 388                                 buffer->depth   = ((fbuf2.fmt.bytesperline<<3)
 389                                                   + (buffer->width-1) )
 390                                                   /buffer->width;
 391                 } else {
 392                         buffer->bytesperline =
 393                                 (buffer->width * buffer->depth + 7) & 7;
 394                         buffer->bytesperline >>= 3;
 395                 }
 396                 break;
 397         }
 398         case VIDIOCSFBUF: /*  set frame buffer  */
 399         {
 400                 struct video_buffer     *buffer = arg;
 401
 402                 memset(&fbuf2, 0, sizeof(fbuf2));
 403                 fbuf2.base       = buffer->base;
 404                 fbuf2.fmt.height = buffer->height;
 405                 fbuf2.fmt.width  = buffer->width;
 406                 switch (buffer->depth) {
 407                 case 8:
 408                         fbuf2.fmt.pixelformat = V4L2_PIX_FMT_RGB332;
 409                         break;
 410                 case 15:
 411                         fbuf2.fmt.pixelformat = V4L2_PIX_FMT_RGB555;
 412                         break;
 413                 case 16:
 414                         fbuf2.fmt.pixelformat = V4L2_PIX_FMT_RGB565;
 415                         break;
 416                 case 24:
 417                         fbuf2.fmt.pixelformat = V4L2_PIX_FMT_BGR24;
 418                         break;
 419                 case 32:
 420                         fbuf2.fmt.pixelformat = V4L2_PIX_FMT_BGR32;
 421                         break;
 422                 }
 423                 fbuf2.fmt.bytesperline = buffer->bytesperline;
 424                 err = drv(inode, file, VIDIOC_S_FBUF, &fbuf2);
 425                 if (err < 0)
 426                         dprintk("VIDIOCSFBUF / VIDIOC_S_FBUF: %d\n",err);
 427                 break;
 428         }
 429         case VIDIOCGWIN: /*  get window or capture dimensions  */
 430         {
 431                 struct video_window     *win = arg;
 432
 433                 fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
 434                 if (!fmt2) {
 435                         err = -ENOMEM;
 436                         break;
 437                 }
 438                 memset(win,0,sizeof(*win));
 439
 440                 fmt2->type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
 441                 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
 442                 if (err < 0)
 443                         dprintk("VIDIOCGWIN / VIDIOC_G_WIN: %d\n",err);
 444                 if (err == 0) {
 445                         win->x         = fmt2->fmt.win.w.left;
 446                         win->y         = fmt2->fmt.win.w.top;
 447                         win->width     = fmt2->fmt.win.w.width;
 448                         win->height    = fmt2->fmt.win.w.height;
 449                         win->chromakey = fmt2->fmt.win.chromakey;
 450                         win->clips     = NULL;
 451                         win->clipcount = 0;
 452                         break;
 453                 }
 454
 455                 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 456                 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
 457                 if (err < 0) {
 458                         dprintk("VIDIOCGWIN / VIDIOC_G_FMT: %d\n",err);
 459                         break;
 460                 }
 461                 win->x         = 0;
 462                 win->y         = 0;
 463                 win->width     = fmt2->fmt.pix.width;
 464                 win->height    = fmt2->fmt.pix.height;
 465                 win->chromakey = 0;
 466                 win->clips     = NULL;
 467                 win->clipcount = 0;
 468                 break;
 469         }
 470         case VIDIOCSWIN: /*  set window and/or capture dimensions  */
 471         {
 472                 struct video_window     *win = arg;
 473                 int err1,err2;
 474
 475                 fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
 476                 if (!fmt2) {
 477                         err = -ENOMEM;
 478                         break;
 479                 }
 480                 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 481                 drv(inode, file, VIDIOC_STREAMOFF, &fmt2->type);
 482                 err1 = drv(inode, file, VIDIOC_G_FMT, fmt2);
 483                 if (err1 < 0)
 484                         dprintk("VIDIOCSWIN / VIDIOC_G_FMT: %d\n",err);
 485                 if (err1 == 0) {
 486                         fmt2->fmt.pix.width  = win->width;
 487                         fmt2->fmt.pix.height = win->height;
 488                         fmt2->fmt.pix.field  = V4L2_FIELD_ANY;
 489                         fmt2->fmt.pix.bytesperline = 0;
 490                         err = drv(inode, file, VIDIOC_S_FMT, fmt2);
 491                         if (err < 0)
 492                                 dprintk("VIDIOCSWIN / VIDIOC_S_FMT #1: %d\n",
 493                                         err);
 494                         win->width  = fmt2->fmt.pix.width;
 495                         win->height = fmt2->fmt.pix.height;
 496                 }
 497
 498                 memset(fmt2,0,sizeof(*fmt2));
 499                 fmt2->type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
 500                 fmt2->fmt.win.w.left    = win->x;
 501                 fmt2->fmt.win.w.top     = win->y;
 502                 fmt2->fmt.win.w.width   = win->width;
 503                 fmt2->fmt.win.w.height  = win->height;
 504                 fmt2->fmt.win.chromakey = win->chromakey;
 505                 fmt2->fmt.win.clips     = (void __user *)win->clips;
 506                 fmt2->fmt.win.clipcount = win->clipcount;
 507                 err2 = drv(inode, file, VIDIOC_S_FMT, fmt2);
 508                 if (err2 < 0)
 509                         dprintk("VIDIOCSWIN / VIDIOC_S_FMT #2: %d\n",err);
 510
 511                 if (err1 != 0 && err2 != 0)
 512                         err = err1;
 513                 break;
 514         }
 515         case VIDIOCCAPTURE: /*  turn on/off preview  */
 516         {
 517                 int *on = arg;
 518
 519                 if (0 == *on) {
 520                         /* dirty hack time.  But v4l1 has no STREAMOFF
 521                          * equivalent in the API, and this one at
 522                          * least comes close ... */
 523                         drv(inode, file, VIDIOC_STREAMOFF, &captype);
 524                 }
 525                 err = drv(inode, file, VIDIOC_OVERLAY, arg);
 526                 if (err < 0)
 527                         dprintk("VIDIOCCAPTURE / VIDIOC_PREVIEW: %d\n",err);
 528                 break;
 529         }
 530         case VIDIOCGCHAN: /*  get input information  */
 531         {
 532                 struct video_channel    *chan = arg;
 533
 534                 memset(&input2,0,sizeof(input2));
 535                 input2.index = chan->channel;
 536                 err = drv(inode, file, VIDIOC_ENUMINPUT, &input2);
 537                 if (err < 0) {
 538                         dprintk("VIDIOCGCHAN / VIDIOC_ENUMINPUT: "
 539                                 "channel=%d err=%d\n",chan->channel,err);
 540                         break;
 541                 }
 542                 chan->channel = input2.index;
 543                 memcpy(chan->name, input2.name,
 544                        min(sizeof(chan->name), sizeof(input2.name)));
 545                 chan->name[sizeof(chan->name) - 1] = 0;
 546                 chan->tuners = (input2.type == V4L2_INPUT_TYPE_TUNER) ? 1 : 0;
 547                 chan->flags = (chan->tuners) ? VIDEO_VC_TUNER : 0;
 548                 switch (input2.type) {
 549                 case V4L2_INPUT_TYPE_TUNER:
 550                         chan->type = VIDEO_TYPE_TV;
 551                         break;
 552                 default:
 553                 case V4L2_INPUT_TYPE_CAMERA:
 554                         chan->type = VIDEO_TYPE_CAMERA;
 555                         break;
 556                 }
 557                 chan->norm = 0;
 558                 err = drv(inode, file, VIDIOC_G_STD, &sid);
 559                 if (err < 0)
 560                         dprintk("VIDIOCGCHAN / VIDIOC_G_STD: %d\n",err);
 561                 if (err == 0) {
 562                         if (sid & V4L2_STD_PAL)
 563                                 chan->norm = VIDEO_MODE_PAL;
 564                         if (sid & V4L2_STD_NTSC)
 565                                 chan->norm = VIDEO_MODE_NTSC;
 566                         if (sid & V4L2_STD_SECAM)
 567                                 chan->norm = VIDEO_MODE_SECAM;
 568                 }
 569                 break;
 570         }
 571         case VIDIOCSCHAN: /*  set input  */
 572         {
 573                 struct video_channel *chan = arg;
 574
 575                 sid = 0;
 576                 err = drv(inode, file, VIDIOC_S_INPUT, &chan->channel);
 577                 if (err < 0)
 578                         dprintk("VIDIOCSCHAN / VIDIOC_S_INPUT: %d\n",err);
 579                 switch (chan->norm) {
 580                 case VIDEO_MODE_PAL:
 581                         sid = V4L2_STD_PAL;
 582                         break;
 583                 case VIDEO_MODE_NTSC:
 584                         sid = V4L2_STD_NTSC;
 585                         break;
 586                 case VIDEO_MODE_SECAM:
 587                         sid = V4L2_STD_SECAM;
 588                         break;
 589                 }
 590                 if (0 != sid) {
 591                         err = drv(inode, file, VIDIOC_S_STD, &sid);
 592                         if (err < 0)
 593                                 dprintk("VIDIOCSCHAN / VIDIOC_S_STD: %d\n",err);
 594                 }
 595                 break;
 596         }
 597         case VIDIOCGPICT: /*  get tone controls & partial capture format  */
 598         {
 599                 struct video_picture    *pict = arg;
 600
 601                 fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
 602                 if (!fmt2) {
 603                         err = -ENOMEM;
 604                         break;
 605                 }
 606
 607                 pict->brightness = get_v4l_control(inode, file,
 608                                                    V4L2_CID_BRIGHTNESS,drv);
 609                 pict->hue = get_v4l_control(inode, file,
 610                                             V4L2_CID_HUE, drv);
 611                 pict->contrast = get_v4l_control(inode, file,
 612                                                  V4L2_CID_CONTRAST, drv);
 613                 pict->colour = get_v4l_control(inode, file,
 614                                                V4L2_CID_SATURATION, drv);
 615                 pict->whiteness = get_v4l_control(inode, file,
 616                                                   V4L2_CID_WHITENESS, drv);
 617
 618                 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 619                 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
 620                 if (err < 0) {
 621                         dprintk("VIDIOCGPICT / VIDIOC_G_FMT: %d\n",err);
 622                         break;
 623                 }
 624
 625                 pict->depth   = ((fmt2->fmt.pix.bytesperline<<3)
 626                                  + (fmt2->fmt.pix.width-1) )
 627                                  /fmt2->fmt.pix.width;
 628                 pict->palette = pixelformat_to_palette(
 629                         fmt2->fmt.pix.pixelformat);
 630                 break;
 631         }
 632         case VIDIOCSPICT: /*  set tone controls & partial capture format  */
 633         {
 634                 struct video_picture    *pict = arg;
 635                 int mem_err = 0, ovl_err = 0;
 636
 637                 fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
 638                 if (!fmt2) {
 639                         err = -ENOMEM;
 640                         break;
 641                 }
 642                 memset(&fbuf2, 0, sizeof(fbuf2));
 643
 644                 set_v4l_control(inode, file,
 645                                 V4L2_CID_BRIGHTNESS, pict->brightness, drv);
 646                 set_v4l_control(inode, file,
 647                                 V4L2_CID_HUE, pict->hue, drv);
 648                 set_v4l_control(inode, file,
 649                                 V4L2_CID_CONTRAST, pict->contrast, drv);
 650                 set_v4l_control(inode, file,
 651                                 V4L2_CID_SATURATION, pict->colour, drv);
 652                 set_v4l_control(inode, file,
 653                                 V4L2_CID_WHITENESS, pict->whiteness, drv);
 654                 /*
 655                  * V4L1 uses this ioctl to set both memory capture and overlay
 656                  * pixel format, while V4L2 has two different ioctls for this.
 657                  * Some cards may not support one or the other, and may support
 658                  * different pixel formats for memory vs overlay.
 659                  */
 660
 661                 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 662                 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
 663                 /* If VIDIOC_G_FMT failed, then the driver likely doesn't
 664                    support memory capture.  Trying to set the memory capture
 665                    parameters would be pointless.  */
 666                 if (err < 0) {
 667                         dprintk("VIDIOCSPICT / VIDIOC_G_FMT: %d\n",err);
 668                         mem_err = -1000;  /* didn't even try */
 669                 } else if (fmt2->fmt.pix.pixelformat !=
 670                          palette_to_pixelformat(pict->palette)) {
 671                         fmt2->fmt.pix.pixelformat = palette_to_pixelformat(
 672                                 pict->palette);
 673                         mem_err = drv(inode, file, VIDIOC_S_FMT, fmt2);
 674                         if (mem_err < 0)
 675                                 dprintk("VIDIOCSPICT / VIDIOC_S_FMT: %d\n",
 676                                         mem_err);
 677                 }
 678
 679                 err = drv(inode, file, VIDIOC_G_FBUF, &fbuf2);
 680                 /* If VIDIOC_G_FBUF failed, then the driver likely doesn't
 681                    support overlay.  Trying to set the overlay parameters
 682                    would be quite pointless.  */
 683                 if (err < 0) {
 684                         dprintk("VIDIOCSPICT / VIDIOC_G_FBUF: %d\n",err);
 685                         ovl_err = -1000;  /* didn't even try */
 686                 } else if (fbuf2.fmt.pixelformat !=
 687                          palette_to_pixelformat(pict->palette)) {
 688                         fbuf2.fmt.pixelformat = palette_to_pixelformat(
 689                                 pict->palette);
 690                         ovl_err = drv(inode, file, VIDIOC_S_FBUF, &fbuf2);
 691                         if (ovl_err < 0)
 692                                 dprintk("VIDIOCSPICT / VIDIOC_S_FBUF: %d\n",
 693                                         ovl_err);
 694                 }
 695                 if (ovl_err < 0 && mem_err < 0)
 696                         /* ioctl failed, couldn't set either parameter */
 697                         if (mem_err != -1000) {
 698                             err = mem_err;
 699                         } else if (ovl_err == -EPERM) {
 700                             err = 0;
 701                         } else {
 702                             err = ovl_err;
 703                         }
 704                 else
 705                         err = 0;
 706                 break;
 707         }
 708         case VIDIOCGTUNER: /*  get tuner information  */
 709         {
 710                 struct video_tuner      *tun = arg;
 711
 712                 memset(&tun2,0,sizeof(tun2));
 713                 err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
 714                 if (err < 0) {
 715                         dprintk("VIDIOCGTUNER / VIDIOC_G_TUNER: %d\n",err);
 716                         break;
 717                 }
 718                 memcpy(tun->name, tun2.name,
 719                        min(sizeof(tun->name), sizeof(tun2.name)));
 720                 tun->name[sizeof(tun->name) - 1] = 0;
 721                 tun->rangelow = tun2.rangelow;
 722                 tun->rangehigh = tun2.rangehigh;
 723                 tun->flags = 0;
 724                 tun->mode = VIDEO_MODE_AUTO;
 725
 726                 for (i = 0; i < 64; i++) {
 727                         memset(&std2,0,sizeof(std2));
 728                         std2.index = i;
 729                         if (0 != drv(inode, file, VIDIOC_ENUMSTD, &std2))
 730                                 break;
 731                         if (std2.id & V4L2_STD_PAL)
 732                                 tun->flags |= VIDEO_TUNER_PAL;
 733                         if (std2.id & V4L2_STD_NTSC)
 734                                 tun->flags |= VIDEO_TUNER_NTSC;
 735                         if (std2.id & V4L2_STD_SECAM)
 736                                 tun->flags |= VIDEO_TUNER_SECAM;
 737                 }
 738
 739                 err = drv(inode, file, VIDIOC_G_STD, &sid);
 740                 if (err < 0)
 741                         dprintk("VIDIOCGTUNER / VIDIOC_G_STD: %d\n",err);
 742                 if (err == 0) {
 743                         if (sid & V4L2_STD_PAL)
 744                                 tun->mode = VIDEO_MODE_PAL;
 745                         if (sid & V4L2_STD_NTSC)
 746                                 tun->mode = VIDEO_MODE_NTSC;
 747                         if (sid & V4L2_STD_SECAM)
 748                                 tun->mode = VIDEO_MODE_SECAM;
 749                 }
 750
 751                 if (tun2.capability & V4L2_TUNER_CAP_LOW)
 752                         tun->flags |= VIDEO_TUNER_LOW;
 753                 if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO)
 754                         tun->flags |= VIDEO_TUNER_STEREO_ON;
 755                 tun->signal = tun2.signal;
 756                 break;
 757         }
 758         case VIDIOCSTUNER: /*  select a tuner input  */
 759         {
 760                 struct video_tuner      *tun = arg;
 761                 struct v4l2_tuner       t;
 762                 memset(&t,0,sizeof(t));
 763
 764                 t.index=tun->tuner;
 765
 766                 err = drv(inode, file, VIDIOC_S_INPUT, &t);
 767                 if (err < 0)
 768                         dprintk("VIDIOCSTUNER / VIDIOC_S_INPUT: %d\n",err);
 769
 770                 break;
 771         }
 772         case VIDIOCGFREQ: /*  get frequency  */
 773         {
 774                 unsigned long *freq = arg;
 775                 memset(&freq2,0,sizeof(freq2));
 776
 777                 freq2.tuner = 0;
 778                 err = drv(inode, file, VIDIOC_G_FREQUENCY, &freq2);
 779                 if (err < 0)
 780                         dprintk("VIDIOCGFREQ / VIDIOC_G_FREQUENCY: %d\n",err);
 781                 if (0 == err)
 782                         *freq = freq2.frequency;
 783                 break;
 784         }
 785         case VIDIOCSFREQ: /*  set frequency  */
 786         {
 787                 unsigned long *freq = arg;
 788                 memset(&freq2,0,sizeof(freq2));
 789
 790                 drv(inode, file, VIDIOC_G_FREQUENCY, &freq2);
 791                 freq2.frequency = *freq;
 792                 err = drv(inode, file, VIDIOC_S_FREQUENCY, &freq2);
 793                 if (err < 0)
 794                         dprintk("VIDIOCSFREQ / VIDIOC_S_FREQUENCY: %d\n",err);
 795                 break;
 796         }
 797         case VIDIOCGAUDIO: /*  get audio properties/controls  */
 798         {
 799                 struct video_audio      *aud = arg;
 800                 memset(&aud2,0,sizeof(aud2));
 801
 802                 err = drv(inode, file, VIDIOC_G_AUDIO, &aud2);
 803                 if (err < 0) {
 804                         dprintk("VIDIOCGAUDIO / VIDIOC_G_AUDIO: %d\n",err);
 805                         break;
 806                 }
 807                 memcpy(aud->name, aud2.name,
 808                        min(sizeof(aud->name), sizeof(aud2.name)));
 809                 aud->name[sizeof(aud->name) - 1] = 0;
 810                 aud->audio = aud2.index;
 811                 aud->flags = 0;
 812                 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_VOLUME, drv);
 813                 if (i >= 0) {
 814                         aud->volume = i;
 815                         aud->flags |= VIDEO_AUDIO_VOLUME;
 816                 }
 817                 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_BASS, drv);
 818                 if (i >= 0) {
 819                         aud->bass = i;
 820                         aud->flags |= VIDEO_AUDIO_BASS;
 821                 }
 822                 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_TREBLE, drv);
 823                 if (i >= 0) {
 824                         aud->treble = i;
 825                         aud->flags |= VIDEO_AUDIO_TREBLE;
 826                 }
 827                 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_BALANCE, drv);
 828                 if (i >= 0) {
 829                         aud->balance = i;
 830                         aud->flags |= VIDEO_AUDIO_BALANCE;
 831                 }
 832                 i = get_v4l_control(inode, file, V4L2_CID_AUDIO_MUTE, drv);
 833                 if (i >= 0) {
 834                         if (i)
 835                                 aud->flags |= VIDEO_AUDIO_MUTE;
 836                         aud->flags |= VIDEO_AUDIO_MUTABLE;
 837                 }
 838                 aud->step = 1;
 839                 qctrl2.id = V4L2_CID_AUDIO_VOLUME;
 840                 if (drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2) == 0 &&
 841                     !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED))
 842                         aud->step = qctrl2.step;
 843                 aud->mode = 0;
 844
 845                 memset(&tun2,0,sizeof(tun2));
 846                 err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
 847                 if (err < 0) {
 848                         dprintk("VIDIOCGAUDIO / VIDIOC_G_TUNER: %d\n",err);
 849                         err = 0;
 850                         break;
 851                 }
 852
 853                 if (tun2.rxsubchans & V4L2_TUNER_SUB_LANG2)
 854                         aud->mode = VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2;
 855                 else if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO)
 856                         aud->mode = VIDEO_SOUND_STEREO;
 857                 else if (tun2.rxsubchans & V4L2_TUNER_SUB_MONO)
 858                         aud->mode = VIDEO_SOUND_MONO;
 859                 break;
 860         }
 861         case VIDIOCSAUDIO: /*  set audio controls  */
 862         {
 863                 struct video_audio      *aud = arg;
 864
 865                 memset(&aud2,0,sizeof(aud2));
 866                 memset(&tun2,0,sizeof(tun2));
 867
 868                 aud2.index = aud->audio;
 869                 err = drv(inode, file, VIDIOC_S_AUDIO, &aud2);
 870                 if (err < 0) {
 871                         dprintk("VIDIOCSAUDIO / VIDIOC_S_AUDIO: %d\n",err);
 872                         break;
 873                 }
 874
 875                 set_v4l_control(inode, file, V4L2_CID_AUDIO_VOLUME,
 876                                 aud->volume, drv);
 877                 set_v4l_control(inode, file, V4L2_CID_AUDIO_BASS,
 878                                 aud->bass, drv);
 879                 set_v4l_control(inode, file, V4L2_CID_AUDIO_TREBLE,
 880                                 aud->treble, drv);
 881                 set_v4l_control(inode, file, V4L2_CID_AUDIO_BALANCE,
 882                                 aud->balance, drv);
 883                 set_v4l_control(inode, file, V4L2_CID_AUDIO_MUTE,
 884                                 !!(aud->flags & VIDEO_AUDIO_MUTE), drv);
 885
 886                 err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
 887                 if (err < 0)
 888                         dprintk("VIDIOCSAUDIO / VIDIOC_G_TUNER: %d\n",err);
 889                 if (err == 0) {
 890                         switch (aud->mode) {
 891                         default:
 892                         case VIDEO_SOUND_MONO:
 893                         case VIDEO_SOUND_LANG1:
 894                                 tun2.audmode = V4L2_TUNER_MODE_MONO;
 895                                 break;
 896                         case VIDEO_SOUND_STEREO:
 897                                 tun2.audmode = V4L2_TUNER_MODE_STEREO;
 898                                 break;
 899                         case VIDEO_SOUND_LANG2:
 900                                 tun2.audmode = V4L2_TUNER_MODE_LANG2;
 901                                 break;
 902                         }
 903                         err = drv(inode, file, VIDIOC_S_TUNER, &tun2);
 904                         if (err < 0)
 905                                 dprintk("VIDIOCSAUDIO / VIDIOC_S_TUNER: %d\n",err);
 906                 }
 907                 err = 0;
 908                 break;
 909         }
 910         case VIDIOCMCAPTURE: /*  capture a frame  */
 911         {
 912                 struct video_mmap       *mm = arg;
 913
 914                 fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
 915                 if (!fmt2) {
 916                         err = -ENOMEM;
 917                         break;
 918                 }
 919                 memset(&buf2,0,sizeof(buf2));
 920
 921                 fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 922                 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
 923                 if (err < 0) {
 924                         dprintk("VIDIOCMCAPTURE / VIDIOC_G_FMT: %d\n",err);
 925                         break;
 926                 }
 927                 if (mm->width   != fmt2->fmt.pix.width  ||
 928                     mm->height  != fmt2->fmt.pix.height ||
 929                     palette_to_pixelformat(mm->format) !=
 930                     fmt2->fmt.pix.pixelformat)
 931                 {/* New capture format...  */
 932                         fmt2->fmt.pix.width = mm->width;
 933                         fmt2->fmt.pix.height = mm->height;
 934                         fmt2->fmt.pix.pixelformat =
 935                                 palette_to_pixelformat(mm->format);
 936                         fmt2->fmt.pix.field = V4L2_FIELD_ANY;
 937                         fmt2->fmt.pix.bytesperline = 0;
 938                         err = drv(inode, file, VIDIOC_S_FMT, fmt2);
 939                         if (err < 0) {
 940                                 dprintk("VIDIOCMCAPTURE / VIDIOC_S_FMT: %d\n",err);
 941                                 break;
 942                         }
 943                 }
 944                 buf2.index = mm->frame;
 945                 buf2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 946                 err = drv(inode, file, VIDIOC_QUERYBUF, &buf2);
 947                 if (err < 0) {
 948                         dprintk("VIDIOCMCAPTURE / VIDIOC_QUERYBUF: %d\n",err);
 949                         break;
 950                 }
 951                 err = drv(inode, file, VIDIOC_QBUF, &buf2);
 952                 if (err < 0) {
 953                         dprintk("VIDIOCMCAPTURE / VIDIOC_QBUF: %d\n",err);
 954                         break;
 955                 }
 956                 err = drv(inode, file, VIDIOC_STREAMON, &captype);
 957                 if (err < 0)
 958                         dprintk("VIDIOCMCAPTURE / VIDIOC_STREAMON: %d\n",err);
 959                 break;
 960         }
 961         case VIDIOCSYNC: /*  wait for a frame  */
 962         {
 963                 int                     *i = arg;
 964
 965                 memset(&buf2,0,sizeof(buf2));
 966                 buf2.index = *i;
 967                 buf2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 968                 err = drv(inode, file, VIDIOC_QUERYBUF, &buf2);
 969                 if (err < 0) {
 970                         /*  No such buffer */
 971                         dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %d\n",err);
 972                         break;
 973                 }
 974                 if (!(buf2.flags & V4L2_BUF_FLAG_MAPPED)) {
 975                         /* Buffer is not mapped  */
 976                         err = -EINVAL;
 977                         break;
 978                 }
 979
 980                 /* make sure capture actually runs so we don't block forever */
 981                 err = drv(inode, file, VIDIOC_STREAMON, &captype);
 982                 if (err < 0) {
 983                         dprintk("VIDIOCSYNC / VIDIOC_STREAMON: %d\n",err);
 984                         break;
 985                 }
 986
 987                 /*  Loop as long as the buffer is queued, but not done  */
 988                 while ((buf2.flags &
 989                         (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE))
 990                        == V4L2_BUF_FLAG_QUEUED)
 991                 {
 992                         err = poll_one(file);
 993                         if (err < 0 ||  /* error or sleep was interrupted  */
 994                             err == 0)   /* timeout? Shouldn't occur.  */
 995                                 break;
 996                         err = drv(inode, file, VIDIOC_QUERYBUF, &buf2);
 997                         if (err < 0)
 998                                 dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %d\n",err);
 999                 }
1000                 if (!(buf2.flags & V4L2_BUF_FLAG_DONE)) /* not done */
1001                         break;
1002                 do {
1003                         err = drv(inode, file, VIDIOC_DQBUF, &buf2);
1004                         if (err < 0)
1005                                 dprintk("VIDIOCSYNC / VIDIOC_DQBUF: %d\n",err);
1006                 } while (err == 0 && buf2.index != *i);
1007                 break;
1008         }
1009
1010         case VIDIOCGVBIFMT: /* query VBI data capture format */
1011         {
1012                 struct vbi_format      *fmt = arg;
1013
1014                 fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
1015                 if (!fmt2) {
1016                         err = -ENOMEM;
1017                         break;
1018                 }
1019                 fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1020
1021                 err = drv(inode, file, VIDIOC_G_FMT, fmt2);
1022                 if (err < 0) {
1023                         dprintk("VIDIOCGVBIFMT / VIDIOC_G_FMT: %d\n", err);
1024                         break;
1025                 }
1026                 if (fmt2->fmt.vbi.sample_format != V4L2_PIX_FMT_GREY) {
1027                         err = -EINVAL;
1028                         break;
1029                 }
1030                 memset(fmt, 0, sizeof(*fmt));
1031                 fmt->samples_per_line = fmt2->fmt.vbi.samples_per_line;
1032                 fmt->sampling_rate    = fmt2->fmt.vbi.sampling_rate;
1033                 fmt->sample_format    = VIDEO_PALETTE_RAW;
1034                 fmt->start[0]         = fmt2->fmt.vbi.start[0];
1035                 fmt->count[0]         = fmt2->fmt.vbi.count[0];
1036                 fmt->start[1]         = fmt2->fmt.vbi.start[1];
1037                 fmt->count[1]         = fmt2->fmt.vbi.count[1];
1038                 fmt->flags            = fmt2->fmt.vbi.flags & 0x03;
1039                 break;
1040         }
1041         case VIDIOCSVBIFMT:
1042         {
1043                 struct vbi_format      *fmt = arg;
1044
1045                 if (VIDEO_PALETTE_RAW != fmt->sample_format) {
1046                         err = -EINVAL;
1047                         break;
1048                 }
1049
1050                 fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
1051                 if (!fmt2) {
1052                         err = -ENOMEM;
1053                         break;
1054                 }
1055                 fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1056                 fmt2->fmt.vbi.samples_per_line = fmt->samples_per_line;
1057                 fmt2->fmt.vbi.sampling_rate    = fmt->sampling_rate;
1058                 fmt2->fmt.vbi.sample_format    = V4L2_PIX_FMT_GREY;
1059                 fmt2->fmt.vbi.start[0]         = fmt->start[0];
1060                 fmt2->fmt.vbi.count[0]         = fmt->count[0];
1061                 fmt2->fmt.vbi.start[1]         = fmt->start[1];
1062                 fmt2->fmt.vbi.count[1]         = fmt->count[1];
1063                 fmt2->fmt.vbi.flags            = fmt->flags;
1064                 err = drv(inode, file, VIDIOC_TRY_FMT, fmt2);
1065                 if (err < 0) {
1066                         dprintk("VIDIOCSVBIFMT / VIDIOC_TRY_FMT: %d\n", err);
1067                         break;
1068                 }
1069
1070                 if (fmt2->fmt.vbi.samples_per_line != fmt->samples_per_line ||
1071                     fmt2->fmt.vbi.sampling_rate    != fmt->sampling_rate    ||
1072                     fmt2->fmt.vbi.sample_format    != V4L2_PIX_FMT_GREY     ||
1073                     fmt2->fmt.vbi.start[0]         != fmt->start[0]         ||
1074                     fmt2->fmt.vbi.count[0]         != fmt->count[0]         ||
1075                     fmt2->fmt.vbi.start[1]         != fmt->start[1]         ||
1076                     fmt2->fmt.vbi.count[1]         != fmt->count[1]         ||
1077                     fmt2->fmt.vbi.flags            != fmt->flags) {
1078                         err = -EINVAL;
1079                         break;
1080                 }
1081                 err = drv(inode, file, VIDIOC_S_FMT, fmt2);
1082                 if (err < 0)
1083                         dprintk("VIDIOCSVBIFMT / VIDIOC_S_FMT: %d\n", err);
1084                 break;
1085         }
1086
1087         default:
1088                 err = -ENOIOCTLCMD;
1089                 break;
1090         }
1091
1092         kfree(cap2);
1093         kfree(fmt2);
1094         return err;
1095 }
1096
1097 EXPORT_SYMBOL(v4l_compat_translate_ioctl);
1098
1099 /*
1100  * Local variables:
1101  * c-basic-offset: 8
1102  * End:
1103  */