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 #include <media/v4l2-ioctl.h>
  34
  35 #include <asm/uaccess.h>
  36 #include <asm/system.h>
  37 #include <asm/pgtable.h>
  38
  39 static unsigned int debug;
  40 module_param(debug, int, 0644);
  41 MODULE_PARM_DESC(debug, "enable debug messages");
  42 MODULE_AUTHOR("Bill Dirks");
  43 MODULE_DESCRIPTION("v4l(1) compatibility layer for v4l2 drivers.");
  44 MODULE_LICENSE("GPL");
  45
  46 #define dprintk(fmt, arg...) \
  47         do { \
  48                 if (debug) \
  49                         printk(KERN_DEBUG "v4l1-compat: " fmt , ## arg);\
  50         } while (0)
  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 && !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED)) {
  74                 ctrl2.id = qctrl2.id;
  75                 err = drv(inode, file, VIDIOC_G_CTRL, &ctrl2);
  76                 if (err < 0) {
  77                         dprintk("VIDIOC_G_CTRL: %d\n", err);
  78                         return 0;
  79                 }
  80                 return ((ctrl2.value - qctrl2.minimum) * 65535
  81                          + (qctrl2.maximum - qctrl2.minimum) / 2)
  82                         / (qctrl2.maximum - qctrl2.minimum);
  83         }
  84         return 0;
  85 }
  86
  87 static int
  88 set_v4l_control(struct inode            *inode,
  89                 struct file             *file,
  90                 int                     cid,
  91                 int                     value,
  92                 v4l2_kioctl             drv)
  93 {
  94         struct v4l2_queryctrl   qctrl2;
  95         struct v4l2_control     ctrl2;
  96         int                     err;
  97
  98         qctrl2.id = cid;
  99         err = drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2);
 100         if (err < 0)
 101                 dprintk("VIDIOC_QUERYCTRL: %d\n", err);
 102         if (err == 0 &&
 103             !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED) &&
 104             !(qctrl2.flags & V4L2_CTRL_FLAG_GRABBED)) {
 105                 if (value < 0)
 106                         value = 0;
 107                 if (value > 65535)
 108                         value = 65535;
 109                 if (value && qctrl2.type == V4L2_CTRL_TYPE_BOOLEAN)
 110                         value = 65535;
 111                 ctrl2.id = qctrl2.id;
 112                 ctrl2.value =
 113                         (value * (qctrl2.maximum - qctrl2.minimum)
 114                          + 32767)
 115                         / 65535;
 116                 ctrl2.value += qctrl2.minimum;
 117                 err = drv(inode, file, VIDIOC_S_CTRL, &ctrl2);
 118                 if (err < 0)
 119                         dprintk("VIDIOC_S_CTRL: %d\n", err);
 120         }
 121         return 0;
 122 }
 123
 124 /* ----------------------------------------------------------------- */
 125
 126 static const unsigned int palette2pixelformat[] = {
 127         [VIDEO_PALETTE_GREY]    = V4L2_PIX_FMT_GREY,
 128         [VIDEO_PALETTE_RGB555]  = V4L2_PIX_FMT_RGB555,
 129         [VIDEO_PALETTE_RGB565]  = V4L2_PIX_FMT_RGB565,
 130         [VIDEO_PALETTE_RGB24]   = V4L2_PIX_FMT_BGR24,
 131         [VIDEO_PALETTE_RGB32]   = V4L2_PIX_FMT_BGR32,
 132         /* yuv packed pixel */
 133         [VIDEO_PALETTE_YUYV]    = V4L2_PIX_FMT_YUYV,
 134         [VIDEO_PALETTE_YUV422]  = V4L2_PIX_FMT_YUYV,
 135         [VIDEO_PALETTE_UYVY]    = V4L2_PIX_FMT_UYVY,
 136         /* yuv planar */
 137         [VIDEO_PALETTE_YUV410P] = V4L2_PIX_FMT_YUV410,
 138         [VIDEO_PALETTE_YUV420]  = V4L2_PIX_FMT_YUV420,
 139         [VIDEO_PALETTE_YUV420P] = V4L2_PIX_FMT_YUV420,
 140         [VIDEO_PALETTE_YUV411P] = V4L2_PIX_FMT_YUV411P,
 141         [VIDEO_PALETTE_YUV422P] = V4L2_PIX_FMT_YUV422P,
 142 };
 143
 144 static unsigned int __pure
 145 palette_to_pixelformat(unsigned int palette)
 146 {
 147         if (palette < ARRAY_SIZE(palette2pixelformat))
 148                 return palette2pixelformat[palette];
 149         else
 150                 return 0;
 151 }
 152
 153 static unsigned int __attribute_const__
 154 pixelformat_to_palette(unsigned int pixelformat)
 155 {
 156         int     palette = 0;
 157         switch (pixelformat) {
 158         case V4L2_PIX_FMT_GREY:
 159                 palette = VIDEO_PALETTE_GREY;
 160                 break;
 161         case V4L2_PIX_FMT_RGB555:
 162                 palette = VIDEO_PALETTE_RGB555;
 163                 break;
 164         case V4L2_PIX_FMT_RGB565:
 165                 palette = VIDEO_PALETTE_RGB565;
 166                 break;
 167         case V4L2_PIX_FMT_BGR24:
 168                 palette = VIDEO_PALETTE_RGB24;
 169                 break;
 170         case V4L2_PIX_FMT_BGR32:
 171                 palette = VIDEO_PALETTE_RGB32;
 172                 break;
 173         /* yuv packed pixel */
 174         case V4L2_PIX_FMT_YUYV:
 175                 palette = VIDEO_PALETTE_YUYV;
 176                 break;
 177         case V4L2_PIX_FMT_UYVY:
 178                 palette = VIDEO_PALETTE_UYVY;
 179                 break;
 180         /* yuv planar */
 181         case V4L2_PIX_FMT_YUV410:
 182                 palette = VIDEO_PALETTE_YUV420;
 183                 break;
 184         case V4L2_PIX_FMT_YUV420:
 185                 palette = VIDEO_PALETTE_YUV420;
 186                 break;
 187         case V4L2_PIX_FMT_YUV411P:
 188                 palette = VIDEO_PALETTE_YUV411P;
 189                 break;
 190         case V4L2_PIX_FMT_YUV422P:
 191                 palette = VIDEO_PALETTE_YUV422P;
 192                 break;
 193         }
 194         return palette;
 195 }
 196
 197 /* ----------------------------------------------------------------- */
 198
 199 static int poll_one(struct file *file, struct poll_wqueues *pwq)
 200 {
 201         int retval = 1;
 202         poll_table *table;
 203
 204         poll_initwait(pwq);
 205         table = &pwq->pt;
 206         for (;;) {
 207                 int mask;
 208                 set_current_state(TASK_INTERRUPTIBLE);
 209                 mask = file->f_op->poll(file, table);
 210                 if (mask & POLLIN)
 211                         break;
 212                 table = NULL;
 213                 if (signal_pending(current)) {
 214                         retval = -ERESTARTSYS;
 215                         break;
 216                 }
 217                 schedule();
 218         }
 219         set_current_state(TASK_RUNNING);
 220         poll_freewait(pwq);
 221         return retval;
 222 }
 223
 224 static int count_inputs(
 225                         struct inode *inode,
 226                         struct file *file,
 227                         v4l2_kioctl drv)
 228 {
 229         struct v4l2_input input2;
 230         int i;
 231
 232         for (i = 0;; i++) {
 233                 memset(&input2, 0, sizeof(input2));
 234                 input2.index = i;
 235                 if (0 != drv(inode, file, VIDIOC_ENUMINPUT, &input2))
 236                         break;
 237         }
 238         return i;
 239 }
 240
 241 static int check_size(
 242                 struct inode *inode,
 243                 struct file *file,
 244                 v4l2_kioctl drv,
 245                 int *maxw,
 246                 int *maxh)
 247 {
 248         struct v4l2_fmtdesc desc2;
 249         struct v4l2_format  fmt2;
 250
 251         memset(&desc2, 0, sizeof(desc2));
 252         memset(&fmt2, 0, sizeof(fmt2));
 253
 254         desc2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 255         if (0 != drv(inode, file, VIDIOC_ENUM_FMT, &desc2))
 256                 goto done;
 257
 258         fmt2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 259         fmt2.fmt.pix.width       = 10000;
 260         fmt2.fmt.pix.height      = 10000;
 261         fmt2.fmt.pix.pixelformat = desc2.pixelformat;
 262         if (0 != drv(inode, file, VIDIOC_TRY_FMT, &fmt2))
 263                 goto done;
 264
 265         *maxw = fmt2.fmt.pix.width;
 266         *maxh = fmt2.fmt.pix.height;
 267
 268 done:
 269         return 0;
 270 }
 271
 272 /* ----------------------------------------------------------------- */
 273
 274 static noinline int v4l1_compat_get_capabilities(
 275                                         struct video_capability *cap,
 276                                         struct inode *inode,
 277                                         struct file *file,
 278                                         v4l2_kioctl drv)
 279 {
 280         int err;
 281         struct v4l2_framebuffer fbuf;
 282         struct v4l2_capability *cap2;
 283
 284         cap2 = kzalloc(sizeof(*cap2), GFP_KERNEL);
 285         if (!cap2) {
 286                 err = -ENOMEM;
 287                 return err;
 288         }
 289         memset(cap, 0, sizeof(*cap));
 290         memset(&fbuf, 0, sizeof(fbuf));
 291
 292         err = drv(inode, file, VIDIOC_QUERYCAP, cap2);
 293         if (err < 0) {
 294                 dprintk("VIDIOCGCAP / VIDIOC_QUERYCAP: %d\n", err);
 295                 goto done;
 296         }
 297         if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY) {
 298                 err = drv(inode, file, VIDIOC_G_FBUF, &fbuf);
 299                 if (err < 0) {
 300                         dprintk("VIDIOCGCAP / VIDIOC_G_FBUF: %d\n", err);
 301                         memset(&fbuf, 0, sizeof(fbuf));
 302                 }
 303                 err = 0;
 304         }
 305
 306         memcpy(cap->name, cap2->card,
 307                min(sizeof(cap->name), sizeof(cap2->card)));
 308         cap->name[sizeof(cap->name) - 1] = 0;
 309         if (cap2->capabilities & V4L2_CAP_VIDEO_CAPTURE)
 310                 cap->type |= VID_TYPE_CAPTURE;
 311         if (cap2->capabilities & V4L2_CAP_TUNER)
 312                 cap->type |= VID_TYPE_TUNER;
 313         if (cap2->capabilities & V4L2_CAP_VBI_CAPTURE)
 314                 cap->type |= VID_TYPE_TELETEXT;
 315         if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY)
 316                 cap->type |= VID_TYPE_OVERLAY;
 317         if (fbuf.capability & V4L2_FBUF_CAP_LIST_CLIPPING)
 318                 cap->type |= VID_TYPE_CLIPPING;
 319
 320         cap->channels  = count_inputs(inode, file, drv);
 321         check_size(inode, file, drv,
 322                    &cap->maxwidth, &cap->maxheight);
 323         cap->audios    =  0; /* FIXME */
 324         cap->minwidth  = 48; /* FIXME */
 325         cap->minheight = 32; /* FIXME */
 326
 327 done:
 328         kfree(cap2);
 329         return err;
 330 }
 331
 332 static noinline int v4l1_compat_get_frame_buffer(
 333                                         struct video_buffer *buffer,
 334                                         struct inode *inode,
 335                                         struct file *file,
 336                                         v4l2_kioctl drv)
 337 {
 338         int err;
 339         struct v4l2_framebuffer fbuf;
 340
 341         memset(buffer, 0, sizeof(*buffer));
 342         memset(&fbuf, 0, sizeof(fbuf));
 343
 344         err = drv(inode, file, VIDIOC_G_FBUF, &fbuf);
 345         if (err < 0) {
 346                 dprintk("VIDIOCGFBUF / VIDIOC_G_FBUF: %d\n", err);
 347                 goto done;
 348         }
 349         buffer->base   = fbuf.base;
 350         buffer->height = fbuf.fmt.height;
 351         buffer->width  = fbuf.fmt.width;
 352
 353         switch (fbuf.fmt.pixelformat) {
 354         case V4L2_PIX_FMT_RGB332:
 355                 buffer->depth = 8;
 356                 break;
 357         case V4L2_PIX_FMT_RGB555:
 358                 buffer->depth = 15;
 359                 break;
 360         case V4L2_PIX_FMT_RGB565:
 361                 buffer->depth = 16;
 362                 break;
 363         case V4L2_PIX_FMT_BGR24:
 364                 buffer->depth = 24;
 365                 break;
 366         case V4L2_PIX_FMT_BGR32:
 367                 buffer->depth = 32;
 368                 break;
 369         default:
 370                 buffer->depth = 0;
 371         }
 372         if (fbuf.fmt.bytesperline) {
 373                 buffer->bytesperline = fbuf.fmt.bytesperline;
 374                 if (!buffer->depth && buffer->width)
 375                         buffer->depth   = ((fbuf.fmt.bytesperline<<3)
 376                                           + (buffer->width-1))
 377                                           / buffer->width;
 378         } else {
 379                 buffer->bytesperline =
 380                         (buffer->width * buffer->depth + 7) & 7;
 381                 buffer->bytesperline >>= 3;
 382         }
 383 done:
 384         return err;
 385 }
 386
 387 static noinline int v4l1_compat_set_frame_buffer(
 388                                         struct video_buffer *buffer,
 389                                         struct inode *inode,
 390                                         struct file *file,
 391                                         v4l2_kioctl drv)
 392 {
 393         int err;
 394         struct v4l2_framebuffer fbuf;
 395
 396         memset(&fbuf, 0, sizeof(fbuf));
 397         fbuf.base       = buffer->base;
 398         fbuf.fmt.height = buffer->height;
 399         fbuf.fmt.width  = buffer->width;
 400         switch (buffer->depth) {
 401         case 8:
 402                 fbuf.fmt.pixelformat = V4L2_PIX_FMT_RGB332;
 403                 break;
 404         case 15:
 405                 fbuf.fmt.pixelformat = V4L2_PIX_FMT_RGB555;
 406                 break;
 407         case 16:
 408                 fbuf.fmt.pixelformat = V4L2_PIX_FMT_RGB565;
 409                 break;
 410         case 24:
 411                 fbuf.fmt.pixelformat = V4L2_PIX_FMT_BGR24;
 412                 break;
 413         case 32:
 414                 fbuf.fmt.pixelformat = V4L2_PIX_FMT_BGR32;
 415                 break;
 416         }
 417         fbuf.fmt.bytesperline = buffer->bytesperline;
 418         err = drv(inode, file, VIDIOC_S_FBUF, &fbuf);
 419         if (err < 0)
 420                 dprintk("VIDIOCSFBUF / VIDIOC_S_FBUF: %d\n", err);
 421         return err;
 422 }
 423
 424 static noinline int v4l1_compat_get_win_cap_dimensions(
 425                                         struct video_window *win,
 426                                         struct inode *inode,
 427                                         struct file *file,
 428                                         v4l2_kioctl drv)
 429 {
 430         int err;
 431         struct v4l2_format *fmt;
 432
 433         fmt = kzalloc(sizeof(*fmt), GFP_KERNEL);
 434         if (!fmt) {
 435                 err = -ENOMEM;
 436                 return err;
 437         }
 438         memset(win, 0, sizeof(*win));
 439
 440         fmt->type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
 441         err = drv(inode, file, VIDIOC_G_FMT, fmt);
 442         if (err < 0)
 443                 dprintk("VIDIOCGWIN / VIDIOC_G_WIN: %d\n", err);
 444         if (err == 0) {
 445                 win->x         = fmt->fmt.win.w.left;
 446                 win->y         = fmt->fmt.win.w.top;
 447                 win->width     = fmt->fmt.win.w.width;
 448                 win->height    = fmt->fmt.win.w.height;
 449                 win->chromakey = fmt->fmt.win.chromakey;
 450                 win->clips     = NULL;
 451                 win->clipcount = 0;
 452                 goto done;
 453         }
 454
 455         fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 456         err = drv(inode, file, VIDIOC_G_FMT, fmt);
 457         if (err < 0) {
 458                 dprintk("VIDIOCGWIN / VIDIOC_G_FMT: %d\n", err);
 459                 goto done;
 460         }
 461         win->x         = 0;
 462         win->y         = 0;
 463         win->width     = fmt->fmt.pix.width;
 464         win->height    = fmt->fmt.pix.height;
 465         win->chromakey = 0;
 466         win->clips     = NULL;
 467         win->clipcount = 0;
 468 done:
 469         kfree(fmt);
 470         return err;
 471 }
 472
 473 static noinline int v4l1_compat_set_win_cap_dimensions(
 474                                         struct video_window *win,
 475                                         struct inode *inode,
 476                                         struct file *file,
 477                                         v4l2_kioctl drv)
 478 {
 479         int err, err1, err2;
 480         struct v4l2_format *fmt;
 481
 482         fmt = kzalloc(sizeof(*fmt), GFP_KERNEL);
 483         if (!fmt) {
 484                 err = -ENOMEM;
 485                 return err;
 486         }
 487         fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 488         drv(inode, file, VIDIOC_STREAMOFF, &fmt->type);
 489         err1 = drv(inode, file, VIDIOC_G_FMT, fmt);
 490         if (err1 < 0)
 491                 dprintk("VIDIOCSWIN / VIDIOC_G_FMT: %d\n", err1);
 492         if (err1 == 0) {
 493                 fmt->fmt.pix.width  = win->width;
 494                 fmt->fmt.pix.height = win->height;
 495                 fmt->fmt.pix.field  = V4L2_FIELD_ANY;
 496                 fmt->fmt.pix.bytesperline = 0;
 497                 err = drv(inode, file, VIDIOC_S_FMT, fmt);
 498                 if (err < 0)
 499                         dprintk("VIDIOCSWIN / VIDIOC_S_FMT #1: %d\n",
 500                                 err);
 501                 win->width  = fmt->fmt.pix.width;
 502                 win->height = fmt->fmt.pix.height;
 503         }
 504
 505         memset(fmt, 0, sizeof(*fmt));
 506         fmt->type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
 507         fmt->fmt.win.w.left    = win->x;
 508         fmt->fmt.win.w.top     = win->y;
 509         fmt->fmt.win.w.width   = win->width;
 510         fmt->fmt.win.w.height  = win->height;
 511         fmt->fmt.win.chromakey = win->chromakey;
 512         fmt->fmt.win.clips     = (void __user *)win->clips;
 513         fmt->fmt.win.clipcount = win->clipcount;
 514         err2 = drv(inode, file, VIDIOC_S_FMT, fmt);
 515         if (err2 < 0)
 516                 dprintk("VIDIOCSWIN / VIDIOC_S_FMT #2: %d\n", err2);
 517
 518         if (err1 != 0 && err2 != 0)
 519                 err = err1;
 520         else
 521                 err = 0;
 522         kfree(fmt);
 523         return err;
 524 }
 525
 526 static noinline int v4l1_compat_turn_preview_on_off(
 527                                         int *on,
 528                                         struct inode *inode,
 529                                         struct file *file,
 530                                         v4l2_kioctl drv)
 531 {
 532         int err;
 533         enum v4l2_buf_type captype = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 534
 535         if (0 == *on) {
 536                 /* dirty hack time.  But v4l1 has no STREAMOFF
 537                  * equivalent in the API, and this one at
 538                  * least comes close ... */
 539                 drv(inode, file, VIDIOC_STREAMOFF, &captype);
 540         }
 541         err = drv(inode, file, VIDIOC_OVERLAY, on);
 542         if (err < 0)
 543                 dprintk("VIDIOCCAPTURE / VIDIOC_PREVIEW: %d\n", err);
 544         return err;
 545 }
 546
 547 static noinline int v4l1_compat_get_input_info(
 548                                         struct video_channel *chan,
 549                                         struct inode *inode,
 550                                         struct file *file,
 551                                         v4l2_kioctl drv)
 552 {
 553         int err;
 554         struct v4l2_input       input2;
 555         v4l2_std_id             sid;
 556
 557         memset(&input2, 0, sizeof(input2));
 558         input2.index = chan->channel;
 559         err = drv(inode, file, VIDIOC_ENUMINPUT, &input2);
 560         if (err < 0) {
 561                 dprintk("VIDIOCGCHAN / VIDIOC_ENUMINPUT: "
 562                         "channel=%d err=%d\n", chan->channel, err);
 563                 goto done;
 564         }
 565         chan->channel = input2.index;
 566         memcpy(chan->name, input2.name,
 567                min(sizeof(chan->name), sizeof(input2.name)));
 568         chan->name[sizeof(chan->name) - 1] = 0;
 569         chan->tuners = (input2.type == V4L2_INPUT_TYPE_TUNER) ? 1 : 0;
 570         chan->flags = (chan->tuners) ? VIDEO_VC_TUNER : 0;
 571         switch (input2.type) {
 572         case V4L2_INPUT_TYPE_TUNER:
 573                 chan->type = VIDEO_TYPE_TV;
 574                 break;
 575         default:
 576         case V4L2_INPUT_TYPE_CAMERA:
 577                 chan->type = VIDEO_TYPE_CAMERA;
 578                 break;
 579         }
 580         chan->norm = 0;
 581         err = drv(inode, file, VIDIOC_G_STD, &sid);
 582         if (err < 0)
 583                 dprintk("VIDIOCGCHAN / VIDIOC_G_STD: %d\n", err);
 584         if (err == 0) {
 585                 if (sid & V4L2_STD_PAL)
 586                         chan->norm = VIDEO_MODE_PAL;
 587                 if (sid & V4L2_STD_NTSC)
 588                         chan->norm = VIDEO_MODE_NTSC;
 589                 if (sid & V4L2_STD_SECAM)
 590                         chan->norm = VIDEO_MODE_SECAM;
 591         }
 592 done:
 593         return err;
 594 }
 595
 596 static noinline int v4l1_compat_set_input(
 597                                         struct video_channel *chan,
 598                                         struct inode *inode,
 599                                         struct file *file,
 600                                         v4l2_kioctl drv)
 601 {
 602         int err;
 603         v4l2_std_id sid = 0;
 604
 605         err = drv(inode, file, VIDIOC_S_INPUT, &chan->channel);
 606         if (err < 0)
 607                 dprintk("VIDIOCSCHAN / VIDIOC_S_INPUT: %d\n", err);
 608         switch (chan->norm) {
 609         case VIDEO_MODE_PAL:
 610                 sid = V4L2_STD_PAL;
 611                 break;
 612         case VIDEO_MODE_NTSC:
 613                 sid = V4L2_STD_NTSC;
 614                 break;
 615         case VIDEO_MODE_SECAM:
 616                 sid = V4L2_STD_SECAM;
 617                 break;
 618         }
 619         if (0 != sid) {
 620                 err = drv(inode, file, VIDIOC_S_STD, &sid);
 621                 if (err < 0)
 622                         dprintk("VIDIOCSCHAN / VIDIOC_S_STD: %d\n", err);
 623         }
 624         return err;
 625 }
 626
 627 static noinline int v4l1_compat_get_picture(
 628                                         struct video_picture *pict,
 629                                         struct inode *inode,
 630                                         struct file *file,
 631                                         v4l2_kioctl drv)
 632 {
 633         int err;
 634         struct v4l2_format *fmt;
 635
 636         fmt = kzalloc(sizeof(*fmt), GFP_KERNEL);
 637         if (!fmt) {
 638                 err = -ENOMEM;
 639                 return err;
 640         }
 641
 642         pict->brightness = get_v4l_control(inode, file,
 643                                            V4L2_CID_BRIGHTNESS, drv);
 644         pict->hue = get_v4l_control(inode, file,
 645                                     V4L2_CID_HUE, drv);
 646         pict->contrast = get_v4l_control(inode, file,
 647                                          V4L2_CID_CONTRAST, drv);
 648         pict->colour = get_v4l_control(inode, file,
 649                                        V4L2_CID_SATURATION, drv);
 650         pict->whiteness = get_v4l_control(inode, file,
 651                                           V4L2_CID_WHITENESS, drv);
 652
 653         fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 654         err = drv(inode, file, VIDIOC_G_FMT, fmt);
 655         if (err < 0) {
 656                 dprintk("VIDIOCGPICT / VIDIOC_G_FMT: %d\n", err);
 657                 goto done;
 658         }
 659
 660         pict->depth   = ((fmt->fmt.pix.bytesperline << 3)
 661                          + (fmt->fmt.pix.width - 1))
 662                          / fmt->fmt.pix.width;
 663         pict->palette = pixelformat_to_palette(
 664                 fmt->fmt.pix.pixelformat);
 665 done:
 666         kfree(fmt);
 667         return err;
 668 }
 669
 670 static noinline int v4l1_compat_set_picture(
 671                                         struct video_picture *pict,
 672                                         struct inode *inode,
 673                                         struct file *file,
 674                                         v4l2_kioctl drv)
 675 {
 676         int err;
 677         struct v4l2_framebuffer fbuf;
 678         int mem_err = 0, ovl_err = 0;
 679         struct v4l2_format *fmt;
 680
 681         fmt = kzalloc(sizeof(*fmt), GFP_KERNEL);
 682         if (!fmt) {
 683                 err = -ENOMEM;
 684                 return err;
 685         }
 686         memset(&fbuf, 0, sizeof(fbuf));
 687
 688         set_v4l_control(inode, file,
 689                         V4L2_CID_BRIGHTNESS, pict->brightness, drv);
 690         set_v4l_control(inode, file,
 691                         V4L2_CID_HUE, pict->hue, drv);
 692         set_v4l_control(inode, file,
 693                         V4L2_CID_CONTRAST, pict->contrast, drv);
 694         set_v4l_control(inode, file,
 695                         V4L2_CID_SATURATION, pict->colour, drv);
 696         set_v4l_control(inode, file,
 697                         V4L2_CID_WHITENESS, pict->whiteness, drv);
 698         /*
 699          * V4L1 uses this ioctl to set both memory capture and overlay
 700          * pixel format, while V4L2 has two different ioctls for this.
 701          * Some cards may not support one or the other, and may support
 702          * different pixel formats for memory vs overlay.
 703          */
 704
 705         fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 706         err = drv(inode, file, VIDIOC_G_FMT, fmt);
 707         /* If VIDIOC_G_FMT failed, then the driver likely doesn't
 708            support memory capture.  Trying to set the memory capture
 709            parameters would be pointless.  */
 710         if (err < 0) {
 711                 dprintk("VIDIOCSPICT / VIDIOC_G_FMT: %d\n", err);
 712                 mem_err = -1000;  /* didn't even try */
 713         } else if (fmt->fmt.pix.pixelformat !=
 714                  palette_to_pixelformat(pict->palette)) {
 715                 fmt->fmt.pix.pixelformat = palette_to_pixelformat(
 716                         pict->palette);
 717                 mem_err = drv(inode, file, VIDIOC_S_FMT, fmt);
 718                 if (mem_err < 0)
 719                         dprintk("VIDIOCSPICT / VIDIOC_S_FMT: %d\n",
 720                                 mem_err);
 721         }
 722
 723         err = drv(inode, file, VIDIOC_G_FBUF, &fbuf);
 724         /* If VIDIOC_G_FBUF failed, then the driver likely doesn't
 725            support overlay.  Trying to set the overlay parameters
 726            would be quite pointless.  */
 727         if (err < 0) {
 728                 dprintk("VIDIOCSPICT / VIDIOC_G_FBUF: %d\n", err);
 729                 ovl_err = -1000;  /* didn't even try */
 730         } else if (fbuf.fmt.pixelformat !=
 731                  palette_to_pixelformat(pict->palette)) {
 732                 fbuf.fmt.pixelformat = palette_to_pixelformat(
 733                         pict->palette);
 734                 ovl_err = drv(inode, file, VIDIOC_S_FBUF, &fbuf);
 735                 if (ovl_err < 0)
 736                         dprintk("VIDIOCSPICT / VIDIOC_S_FBUF: %d\n",
 737                                 ovl_err);
 738         }
 739         if (ovl_err < 0 && mem_err < 0) {
 740                 /* ioctl failed, couldn't set either parameter */
 741                 if (mem_err != -1000)
 742                         err = mem_err;
 743                 else if (ovl_err == -EPERM)
 744                         err = 0;
 745                 else
 746                         err = ovl_err;
 747         } else
 748                 err = 0;
 749         kfree(fmt);
 750         return err;
 751 }
 752
 753 static noinline int v4l1_compat_get_tuner(
 754                                         struct video_tuner *tun,
 755                                         struct inode *inode,
 756                                         struct file *file,
 757                                         v4l2_kioctl drv)
 758 {
 759         int err, i;
 760         struct v4l2_tuner       tun2;
 761         struct v4l2_standard    std2;
 762         v4l2_std_id             sid;
 763
 764         memset(&tun2, 0, sizeof(tun2));
 765         err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
 766         if (err < 0) {
 767                 dprintk("VIDIOCGTUNER / VIDIOC_G_TUNER: %d\n", err);
 768                 goto done;
 769         }
 770         memcpy(tun->name, tun2.name,
 771                min(sizeof(tun->name), sizeof(tun2.name)));
 772         tun->name[sizeof(tun->name) - 1] = 0;
 773         tun->rangelow = tun2.rangelow;
 774         tun->rangehigh = tun2.rangehigh;
 775         tun->flags = 0;
 776         tun->mode = VIDEO_MODE_AUTO;
 777
 778         for (i = 0; i < 64; i++) {
 779                 memset(&std2, 0, sizeof(std2));
 780                 std2.index = i;
 781                 if (0 != drv(inode, file, VIDIOC_ENUMSTD, &std2))
 782                         break;
 783                 if (std2.id & V4L2_STD_PAL)
 784                         tun->flags |= VIDEO_TUNER_PAL;
 785                 if (std2.id & V4L2_STD_NTSC)
 786                         tun->flags |= VIDEO_TUNER_NTSC;
 787                 if (std2.id & V4L2_STD_SECAM)
 788                         tun->flags |= VIDEO_TUNER_SECAM;
 789         }
 790
 791         err = drv(inode, file, VIDIOC_G_STD, &sid);
 792         if (err < 0)
 793                 dprintk("VIDIOCGTUNER / VIDIOC_G_STD: %d\n", err);
 794         if (err == 0) {
 795                 if (sid & V4L2_STD_PAL)
 796                         tun->mode = VIDEO_MODE_PAL;
 797                 if (sid & V4L2_STD_NTSC)
 798                         tun->mode = VIDEO_MODE_NTSC;
 799                 if (sid & V4L2_STD_SECAM)
 800                         tun->mode = VIDEO_MODE_SECAM;
 801         }
 802
 803         if (tun2.capability & V4L2_TUNER_CAP_LOW)
 804                 tun->flags |= VIDEO_TUNER_LOW;
 805         if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO)
 806                 tun->flags |= VIDEO_TUNER_STEREO_ON;
 807         tun->signal = tun2.signal;
 808 done:
 809         return err;
 810 }
 811
 812 static noinline int v4l1_compat_select_tuner(
 813                                         struct video_tuner *tun,
 814                                         struct inode *inode,
 815                                         struct file *file,
 816                                         v4l2_kioctl drv)
 817 {
 818         int err;
 819         struct v4l2_tuner       t;/*84 bytes on x86_64*/
 820         memset(&t, 0, sizeof(t));
 821
 822         t.index = tun->tuner;
 823
 824         err = drv(inode, file, VIDIOC_S_INPUT, &t);
 825         if (err < 0)
 826                 dprintk("VIDIOCSTUNER / VIDIOC_S_INPUT: %d\n", err);
 827         return err;
 828 }
 829
 830 static noinline int v4l1_compat_get_frequency(
 831                                         unsigned long *freq,
 832                                         struct inode *inode,
 833                                         struct file *file,
 834                                         v4l2_kioctl drv)
 835 {
 836         int err;
 837         struct v4l2_frequency   freq2;
 838         memset(&freq2, 0, sizeof(freq2));
 839
 840         freq2.tuner = 0;
 841         err = drv(inode, file, VIDIOC_G_FREQUENCY, &freq2);
 842         if (err < 0)
 843                 dprintk("VIDIOCGFREQ / VIDIOC_G_FREQUENCY: %d\n", err);
 844         if (0 == err)
 845                 *freq = freq2.frequency;
 846         return err;
 847 }
 848
 849 static noinline int v4l1_compat_set_frequency(
 850                                         unsigned long *freq,
 851                                         struct inode *inode,
 852                                         struct file *file,
 853                                         v4l2_kioctl drv)
 854 {
 855         int err;
 856         struct v4l2_frequency   freq2;
 857         memset(&freq2, 0, sizeof(freq2));
 858
 859         drv(inode, file, VIDIOC_G_FREQUENCY, &freq2);
 860         freq2.frequency = *freq;
 861         err = drv(inode, file, VIDIOC_S_FREQUENCY, &freq2);
 862         if (err < 0)
 863                 dprintk("VIDIOCSFREQ / VIDIOC_S_FREQUENCY: %d\n", err);
 864         return err;
 865 }
 866
 867 static noinline int v4l1_compat_get_audio(
 868                                         struct video_audio *aud,
 869                                         struct inode *inode,
 870                                         struct file *file,
 871                                         v4l2_kioctl drv)
 872 {
 873         int err, i;
 874         struct v4l2_queryctrl   qctrl2;
 875         struct v4l2_audio       aud2;
 876         struct v4l2_tuner       tun2;
 877         memset(&aud2, 0, sizeof(aud2));
 878
 879         err = drv(inode, file, VIDIOC_G_AUDIO, &aud2);
 880         if (err < 0) {
 881                 dprintk("VIDIOCGAUDIO / VIDIOC_G_AUDIO: %d\n", err);
 882                 goto done;
 883         }
 884         memcpy(aud->name, aud2.name,
 885                min(sizeof(aud->name), sizeof(aud2.name)));
 886         aud->name[sizeof(aud->name) - 1] = 0;
 887         aud->audio = aud2.index;
 888         aud->flags = 0;
 889         i = get_v4l_control(inode, file, V4L2_CID_AUDIO_VOLUME, drv);
 890         if (i >= 0) {
 891                 aud->volume = i;
 892                 aud->flags |= VIDEO_AUDIO_VOLUME;
 893         }
 894         i = get_v4l_control(inode, file, V4L2_CID_AUDIO_BASS, drv);
 895         if (i >= 0) {
 896                 aud->bass = i;
 897                 aud->flags |= VIDEO_AUDIO_BASS;
 898         }
 899         i = get_v4l_control(inode, file, V4L2_CID_AUDIO_TREBLE, drv);
 900         if (i >= 0) {
 901                 aud->treble = i;
 902                 aud->flags |= VIDEO_AUDIO_TREBLE;
 903         }
 904         i = get_v4l_control(inode, file, V4L2_CID_AUDIO_BALANCE, drv);
 905         if (i >= 0) {
 906                 aud->balance = i;
 907                 aud->flags |= VIDEO_AUDIO_BALANCE;
 908         }
 909         i = get_v4l_control(inode, file, V4L2_CID_AUDIO_MUTE, drv);
 910         if (i >= 0) {
 911                 if (i)
 912                         aud->flags |= VIDEO_AUDIO_MUTE;
 913                 aud->flags |= VIDEO_AUDIO_MUTABLE;
 914         }
 915         aud->step = 1;
 916         qctrl2.id = V4L2_CID_AUDIO_VOLUME;
 917         if (drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2) == 0 &&
 918             !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED))
 919                 aud->step = qctrl2.step;
 920         aud->mode = 0;
 921
 922         memset(&tun2, 0, sizeof(tun2));
 923         err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
 924         if (err < 0) {
 925                 dprintk("VIDIOCGAUDIO / VIDIOC_G_TUNER: %d\n", err);
 926                 err = 0;
 927                 goto done;
 928         }
 929
 930         if (tun2.rxsubchans & V4L2_TUNER_SUB_LANG2)
 931                 aud->mode = VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2;
 932         else if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO)
 933                 aud->mode = VIDEO_SOUND_STEREO;
 934         else if (tun2.rxsubchans & V4L2_TUNER_SUB_MONO)
 935                 aud->mode = VIDEO_SOUND_MONO;
 936 done:
 937         return err;
 938 }
 939
 940 static noinline int v4l1_compat_set_audio(
 941                                         struct video_audio *aud,
 942                                         struct inode *inode,
 943                                         struct file *file,
 944                                         v4l2_kioctl drv)
 945 {
 946         int err;
 947         struct v4l2_audio       aud2;
 948         struct v4l2_tuner       tun2;
 949
 950         memset(&aud2, 0, sizeof(aud2));
 951         memset(&tun2, 0, sizeof(tun2));
 952
 953         aud2.index = aud->audio;
 954         err = drv(inode, file, VIDIOC_S_AUDIO, &aud2);
 955         if (err < 0) {
 956                 dprintk("VIDIOCSAUDIO / VIDIOC_S_AUDIO: %d\n", err);
 957                 goto done;
 958         }
 959
 960         set_v4l_control(inode, file, V4L2_CID_AUDIO_VOLUME,
 961                         aud->volume, drv);
 962         set_v4l_control(inode, file, V4L2_CID_AUDIO_BASS,
 963                         aud->bass, drv);
 964         set_v4l_control(inode, file, V4L2_CID_AUDIO_TREBLE,
 965                         aud->treble, drv);
 966         set_v4l_control(inode, file, V4L2_CID_AUDIO_BALANCE,
 967                         aud->balance, drv);
 968         set_v4l_control(inode, file, V4L2_CID_AUDIO_MUTE,
 969                         !!(aud->flags & VIDEO_AUDIO_MUTE), drv);
 970
 971         err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
 972         if (err < 0)
 973                 dprintk("VIDIOCSAUDIO / VIDIOC_G_TUNER: %d\n", err);
 974         if (err == 0) {
 975                 switch (aud->mode) {
 976                 default:
 977                 case VIDEO_SOUND_MONO:
 978                 case VIDEO_SOUND_LANG1:
 979                         tun2.audmode = V4L2_TUNER_MODE_MONO;
 980                         break;
 981                 case VIDEO_SOUND_STEREO:
 982                         tun2.audmode = V4L2_TUNER_MODE_STEREO;
 983                         break;
 984                 case VIDEO_SOUND_LANG2:
 985                         tun2.audmode = V4L2_TUNER_MODE_LANG2;
 986                         break;
 987                 }
 988                 err = drv(inode, file, VIDIOC_S_TUNER, &tun2);
 989                 if (err < 0)
 990                         dprintk("VIDIOCSAUDIO / VIDIOC_S_TUNER: %d\n", err);
 991         }
 992         err = 0;
 993 done:
 994         return err;
 995 }
 996
 997 static noinline int v4l1_compat_capture_frame(
 998                                         struct video_mmap *mm,
 999                                         struct inode *inode,
1000                                         struct file *file,
1001                                         v4l2_kioctl drv)
1002 {
1003         int err;
1004         enum v4l2_buf_type      captype = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1005         struct v4l2_buffer      buf;
1006         struct v4l2_format      *fmt;
1007
1008         fmt = kzalloc(sizeof(*fmt), GFP_KERNEL);
1009         if (!fmt) {
1010                 err = -ENOMEM;
1011                 return err;
1012         }
1013         memset(&buf, 0, sizeof(buf));
1014
1015         fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1016         err = drv(inode, file, VIDIOC_G_FMT, fmt);
1017         if (err < 0) {
1018                 dprintk("VIDIOCMCAPTURE / VIDIOC_G_FMT: %d\n", err);
1019                 goto done;
1020         }
1021         if (mm->width   != fmt->fmt.pix.width  ||
1022             mm->height  != fmt->fmt.pix.height ||
1023             palette_to_pixelformat(mm->format) !=
1024             fmt->fmt.pix.pixelformat) {
1025                 /* New capture format...  */
1026                 fmt->fmt.pix.width = mm->width;
1027                 fmt->fmt.pix.height = mm->height;
1028                 fmt->fmt.pix.pixelformat =
1029                         palette_to_pixelformat(mm->format);
1030                 fmt->fmt.pix.field = V4L2_FIELD_ANY;
1031                 fmt->fmt.pix.bytesperline = 0;
1032                 err = drv(inode, file, VIDIOC_S_FMT, fmt);
1033                 if (err < 0) {
1034                         dprintk("VIDIOCMCAPTURE / VIDIOC_S_FMT: %d\n", err);
1035                         goto done;
1036                 }
1037         }
1038         buf.index = mm->frame;
1039         buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1040         err = drv(inode, file, VIDIOC_QUERYBUF, &buf);
1041         if (err < 0) {
1042                 dprintk("VIDIOCMCAPTURE / VIDIOC_QUERYBUF: %d\n", err);
1043                 goto done;
1044         }
1045         err = drv(inode, file, VIDIOC_QBUF, &buf);
1046         if (err < 0) {
1047                 dprintk("VIDIOCMCAPTURE / VIDIOC_QBUF: %d\n", err);
1048                 goto done;
1049         }
1050         err = drv(inode, file, VIDIOC_STREAMON, &captype);
1051         if (err < 0)
1052                 dprintk("VIDIOCMCAPTURE / VIDIOC_STREAMON: %d\n", err);
1053 done:
1054         kfree(fmt);
1055         return err;
1056 }
1057
1058 static noinline int v4l1_compat_sync(
1059                                 int *i,
1060                                 struct inode *inode,
1061                                 struct file *file,
1062                                 v4l2_kioctl drv)
1063 {
1064         int err;
1065         enum v4l2_buf_type captype = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1066         struct v4l2_buffer buf;
1067         struct poll_wqueues *pwq;
1068
1069         memset(&buf, 0, sizeof(buf));
1070         buf.index = *i;
1071         buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1072         err = drv(inode, file, VIDIOC_QUERYBUF, &buf);
1073         if (err < 0) {
1074                 /*  No such buffer */
1075                 dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %d\n", err);
1076                 goto done;
1077         }
1078         if (!(buf.flags & V4L2_BUF_FLAG_MAPPED)) {
1079                 /* Buffer is not mapped  */
1080                 err = -EINVAL;
1081                 goto done;
1082         }
1083
1084         /* make sure capture actually runs so we don't block forever */
1085         err = drv(inode, file, VIDIOC_STREAMON, &captype);
1086         if (err < 0) {
1087                 dprintk("VIDIOCSYNC / VIDIOC_STREAMON: %d\n", err);
1088                 goto done;
1089         }
1090
1091         pwq = kmalloc(sizeof(*pwq), GFP_KERNEL);
1092         /*  Loop as long as the buffer is queued, but not done  */
1093         while ((buf.flags & (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE))
1094                                                 == V4L2_BUF_FLAG_QUEUED) {
1095                 err = poll_one(file, pwq);
1096                 if (err < 0 ||  /* error or sleep was interrupted  */
1097                     err == 0)   /* timeout? Shouldn't occur.  */
1098                         break;
1099                 err = drv(inode, file, VIDIOC_QUERYBUF, &buf);
1100                 if (err < 0)
1101                         dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %d\n", err);
1102         }
1103         kfree(pwq);
1104         if (!(buf.flags & V4L2_BUF_FLAG_DONE)) /* not done */
1105                 goto done;
1106         do {
1107                 err = drv(inode, file, VIDIOC_DQBUF, &buf);
1108                 if (err < 0)
1109                         dprintk("VIDIOCSYNC / VIDIOC_DQBUF: %d\n", err);
1110         } while (err == 0 && buf.index != *i);
1111 done:
1112         return err;
1113 }
1114
1115 static noinline int v4l1_compat_get_vbi_format(
1116                                 struct vbi_format *fmt,
1117                                 struct inode *inode,
1118                                 struct file *file,
1119                                 v4l2_kioctl drv)
1120 {
1121         int err;
1122         struct v4l2_format *fmt2;
1123
1124         fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
1125         if (!fmt2) {
1126                 err = -ENOMEM;
1127                 return err;
1128         }
1129         fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1130
1131         err = drv(inode, file, VIDIOC_G_FMT, fmt2);
1132         if (err < 0) {
1133                 dprintk("VIDIOCGVBIFMT / VIDIOC_G_FMT: %d\n", err);
1134                 goto done;
1135         }
1136         if (fmt2->fmt.vbi.sample_format != V4L2_PIX_FMT_GREY) {
1137                 err = -EINVAL;
1138                 goto done;
1139         }
1140         memset(fmt, 0, sizeof(*fmt));
1141         fmt->samples_per_line = fmt2->fmt.vbi.samples_per_line;
1142         fmt->sampling_rate    = fmt2->fmt.vbi.sampling_rate;
1143         fmt->sample_format    = VIDEO_PALETTE_RAW;
1144         fmt->start[0]         = fmt2->fmt.vbi.start[0];
1145         fmt->count[0]         = fmt2->fmt.vbi.count[0];
1146         fmt->start[1]         = fmt2->fmt.vbi.start[1];
1147         fmt->count[1]         = fmt2->fmt.vbi.count[1];
1148         fmt->flags            = fmt2->fmt.vbi.flags & 0x03;
1149 done:
1150         kfree(fmt2);
1151         return err;
1152 }
1153
1154 static noinline int v4l1_compat_set_vbi_format(
1155                                 struct vbi_format *fmt,
1156                                 struct inode *inode,
1157                                 struct file *file,
1158                                 v4l2_kioctl drv)
1159 {
1160         int err;
1161         struct v4l2_format      *fmt2 = NULL;
1162
1163         if (VIDEO_PALETTE_RAW != fmt->sample_format) {
1164                 err = -EINVAL;
1165                 return err;
1166         }
1167
1168         fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
1169         if (!fmt2) {
1170                 err = -ENOMEM;
1171                 return err;
1172         }
1173         fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1174         fmt2->fmt.vbi.samples_per_line = fmt->samples_per_line;
1175         fmt2->fmt.vbi.sampling_rate    = fmt->sampling_rate;
1176         fmt2->fmt.vbi.sample_format    = V4L2_PIX_FMT_GREY;
1177         fmt2->fmt.vbi.start[0]         = fmt->start[0];
1178         fmt2->fmt.vbi.count[0]         = fmt->count[0];
1179         fmt2->fmt.vbi.start[1]         = fmt->start[1];
1180         fmt2->fmt.vbi.count[1]         = fmt->count[1];
1181         fmt2->fmt.vbi.flags            = fmt->flags;
1182         err = drv(inode, file, VIDIOC_TRY_FMT, fmt2);
1183         if (err < 0) {
1184                 dprintk("VIDIOCSVBIFMT / VIDIOC_TRY_FMT: %d\n", err);
1185                 goto done;
1186         }
1187
1188         if (fmt2->fmt.vbi.samples_per_line != fmt->samples_per_line ||
1189             fmt2->fmt.vbi.sampling_rate    != fmt->sampling_rate    ||
1190             fmt2->fmt.vbi.sample_format    != V4L2_PIX_FMT_GREY     ||
1191             fmt2->fmt.vbi.start[0]         != fmt->start[0]         ||
1192             fmt2->fmt.vbi.count[0]         != fmt->count[0]         ||
1193             fmt2->fmt.vbi.start[1]         != fmt->start[1]         ||
1194             fmt2->fmt.vbi.count[1]         != fmt->count[1]         ||
1195             fmt2->fmt.vbi.flags            != fmt->flags) {
1196                 err = -EINVAL;
1197                 goto done;
1198         }
1199         err = drv(inode, file, VIDIOC_S_FMT, fmt2);
1200         if (err < 0)
1201                 dprintk("VIDIOCSVBIFMT / VIDIOC_S_FMT: %d\n", err);
1202 done:
1203         kfree(fmt2);
1204         return err;
1205 }
1206
1207 /*
1208  *      This function is exported.
1209  */
1210 int
1211 v4l_compat_translate_ioctl(struct inode         *inode,
1212                            struct file          *file,
1213                            int                  cmd,
1214                            void                 *arg,
1215                            v4l2_kioctl          drv)
1216 {
1217         int err;
1218
1219         switch (cmd) {
1220         case VIDIOCGCAP:        /* capability */
1221                 err = v4l1_compat_get_capabilities(arg, inode, file, drv);
1222                 break;
1223         case VIDIOCGFBUF: /*  get frame buffer  */
1224                 err = v4l1_compat_get_frame_buffer(arg, inode, file, drv);
1225                 break;
1226         case VIDIOCSFBUF: /*  set frame buffer  */
1227                 err = v4l1_compat_set_frame_buffer(arg, inode, file, drv);
1228                 break;
1229         case VIDIOCGWIN: /*  get window or capture dimensions  */
1230                 err = v4l1_compat_get_win_cap_dimensions(arg, inode, file, drv);
1231                 break;
1232         case VIDIOCSWIN: /*  set window and/or capture dimensions  */
1233                 err = v4l1_compat_set_win_cap_dimensions(arg, inode, file, drv);
1234                 break;
1235         case VIDIOCCAPTURE: /*  turn on/off preview  */
1236                 err = v4l1_compat_turn_preview_on_off(arg, inode, file, drv);
1237                 break;
1238         case VIDIOCGCHAN: /*  get input information  */
1239                 err = v4l1_compat_get_input_info(arg, inode, file, drv);
1240                 break;
1241         case VIDIOCSCHAN: /*  set input  */
1242                 err = v4l1_compat_set_input(arg, inode, file, drv);
1243                 break;
1244         case VIDIOCGPICT: /*  get tone controls & partial capture format  */
1245                 err = v4l1_compat_get_picture(arg, inode, file, drv);
1246                 break;
1247         case VIDIOCSPICT: /*  set tone controls & partial capture format  */
1248                 err = v4l1_compat_set_picture(arg, inode, file, drv);
1249                 break;
1250         case VIDIOCGTUNER: /*  get tuner information  */
1251                 err = v4l1_compat_get_tuner(arg, inode, file, drv);
1252                 break;
1253         case VIDIOCSTUNER: /*  select a tuner input  */
1254                 err = v4l1_compat_select_tuner(arg, inode, file, drv);
1255                 break;
1256         case VIDIOCGFREQ: /*  get frequency  */
1257                 err = v4l1_compat_get_frequency(arg, inode, file, drv);
1258                 break;
1259         case VIDIOCSFREQ: /*  set frequency  */
1260                 err = v4l1_compat_set_frequency(arg, inode, file, drv);
1261                 break;
1262         case VIDIOCGAUDIO: /*  get audio properties/controls  */
1263                 err = v4l1_compat_get_audio(arg, inode, file, drv);
1264                 break;
1265         case VIDIOCSAUDIO: /*  set audio controls  */
1266                 err = v4l1_compat_set_audio(arg, inode, file, drv);
1267                 break;
1268         case VIDIOCMCAPTURE: /*  capture a frame  */
1269                 err = v4l1_compat_capture_frame(arg, inode, file, drv);
1270                 break;
1271         case VIDIOCSYNC: /*  wait for a frame  */
1272                 err = v4l1_compat_sync(arg, inode, file, drv);
1273                 break;
1274         case VIDIOCGVBIFMT: /* query VBI data capture format */
1275                 err = v4l1_compat_get_vbi_format(arg, inode, file, drv);
1276                 break;
1277         case VIDIOCSVBIFMT:
1278                 err = v4l1_compat_set_vbi_format(arg, inode, file, drv);
1279                 break;
1280         default:
1281                 err = -ENOIOCTLCMD;
1282                 break;
1283         }
1284
1285         return err;
1286 }
1287 EXPORT_SYMBOL(v4l_compat_translate_ioctl);
1288
1289 /*
1290  * Local variables:
1291  * c-basic-offset: 8
1292  * End:
1293  */