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 file             *file,
  61                 int                     cid,
  62                 v4l2_kioctl             drv)
  63 {
  64         struct v4l2_queryctrl   qctrl2;
  65         struct v4l2_control     ctrl2;
  66         int                     err;
  67
  68         qctrl2.id = cid;
  69         err = drv(file, VIDIOC_QUERYCTRL, &qctrl2);
  70         if (err < 0)
  71                 dprintk("VIDIOC_QUERYCTRL: %d\n", err);
  72         if (err == 0 && !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED)) {
  73                 ctrl2.id = qctrl2.id;
  74                 err = drv(file, VIDIOC_G_CTRL, &ctrl2);
  75                 if (err < 0) {
  76                         dprintk("VIDIOC_G_CTRL: %d\n", err);
  77                         return 0;
  78                 }
  79                 return DIV_ROUND_CLOSEST((ctrl2.value-qctrl2.minimum) * 65535,
  80                                          qctrl2.maximum - qctrl2.minimum);
  81         }
  82         return 0;
  83 }
  84
  85 static int
  86 set_v4l_control(struct file             *file,
  87                 int                     cid,
  88                 int                     value,
  89                 v4l2_kioctl             drv)
  90 {
  91         struct v4l2_queryctrl   qctrl2;
  92         struct v4l2_control     ctrl2;
  93         int                     err;
  94
  95         qctrl2.id = cid;
  96         err = drv(file, VIDIOC_QUERYCTRL, &qctrl2);
  97         if (err < 0)
  98                 dprintk("VIDIOC_QUERYCTRL: %d\n", err);
  99         if (err == 0 &&
 100             !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED) &&
 101             !(qctrl2.flags & V4L2_CTRL_FLAG_GRABBED)) {
 102                 if (value < 0)
 103                         value = 0;
 104                 if (value > 65535)
 105                         value = 65535;
 106                 if (value && qctrl2.type == V4L2_CTRL_TYPE_BOOLEAN)
 107                         value = 65535;
 108                 ctrl2.id = qctrl2.id;
 109                 ctrl2.value =
 110                         (value * (qctrl2.maximum - qctrl2.minimum)
 111                          + 32767)
 112                         / 65535;
 113                 ctrl2.value += qctrl2.minimum;
 114                 err = drv(file, VIDIOC_S_CTRL, &ctrl2);
 115                 if (err < 0)
 116                         dprintk("VIDIOC_S_CTRL: %d\n", err);
 117         }
 118         return 0;
 119 }
 120
 121 /* ----------------------------------------------------------------- */
 122
 123 static const unsigned int palette2pixelformat[] = {
 124         [VIDEO_PALETTE_GREY]    = V4L2_PIX_FMT_GREY,
 125         [VIDEO_PALETTE_RGB555]  = V4L2_PIX_FMT_RGB555,
 126         [VIDEO_PALETTE_RGB565]  = V4L2_PIX_FMT_RGB565,
 127         [VIDEO_PALETTE_RGB24]   = V4L2_PIX_FMT_BGR24,
 128         [VIDEO_PALETTE_RGB32]   = V4L2_PIX_FMT_BGR32,
 129         /* yuv packed pixel */
 130         [VIDEO_PALETTE_YUYV]    = V4L2_PIX_FMT_YUYV,
 131         [VIDEO_PALETTE_YUV422]  = V4L2_PIX_FMT_YUYV,
 132         [VIDEO_PALETTE_UYVY]    = V4L2_PIX_FMT_UYVY,
 133         /* yuv planar */
 134         [VIDEO_PALETTE_YUV410P] = V4L2_PIX_FMT_YUV410,
 135         [VIDEO_PALETTE_YUV420]  = V4L2_PIX_FMT_YUV420,
 136         [VIDEO_PALETTE_YUV420P] = V4L2_PIX_FMT_YUV420,
 137         [VIDEO_PALETTE_YUV411P] = V4L2_PIX_FMT_YUV411P,
 138         [VIDEO_PALETTE_YUV422P] = V4L2_PIX_FMT_YUV422P,
 139 };
 140
 141 static unsigned int __pure
 142 palette_to_pixelformat(unsigned int palette)
 143 {
 144         if (palette < ARRAY_SIZE(palette2pixelformat))
 145                 return palette2pixelformat[palette];
 146         else
 147                 return 0;
 148 }
 149
 150 static unsigned int __attribute_const__
 151 pixelformat_to_palette(unsigned int pixelformat)
 152 {
 153         int     palette = 0;
 154         switch (pixelformat) {
 155         case V4L2_PIX_FMT_GREY:
 156                 palette = VIDEO_PALETTE_GREY;
 157                 break;
 158         case V4L2_PIX_FMT_RGB555:
 159                 palette = VIDEO_PALETTE_RGB555;
 160                 break;
 161         case V4L2_PIX_FMT_RGB565:
 162                 palette = VIDEO_PALETTE_RGB565;
 163                 break;
 164         case V4L2_PIX_FMT_BGR24:
 165                 palette = VIDEO_PALETTE_RGB24;
 166                 break;
 167         case V4L2_PIX_FMT_BGR32:
 168                 palette = VIDEO_PALETTE_RGB32;
 169                 break;
 170         /* yuv packed pixel */
 171         case V4L2_PIX_FMT_YUYV:
 172                 palette = VIDEO_PALETTE_YUYV;
 173                 break;
 174         case V4L2_PIX_FMT_UYVY:
 175                 palette = VIDEO_PALETTE_UYVY;
 176                 break;
 177         /* yuv planar */
 178         case V4L2_PIX_FMT_YUV410:
 179                 palette = VIDEO_PALETTE_YUV420;
 180                 break;
 181         case V4L2_PIX_FMT_YUV420:
 182                 palette = VIDEO_PALETTE_YUV420;
 183                 break;
 184         case V4L2_PIX_FMT_YUV411P:
 185                 palette = VIDEO_PALETTE_YUV411P;
 186                 break;
 187         case V4L2_PIX_FMT_YUV422P:
 188                 palette = VIDEO_PALETTE_YUV422P;
 189                 break;
 190         }
 191         return palette;
 192 }
 193
 194 /* ----------------------------------------------------------------- */
 195
 196 static int poll_one(struct file *file, struct poll_wqueues *pwq)
 197 {
 198         int retval = 1;
 199         poll_table *table;
 200
 201         poll_initwait(pwq);
 202         table = &pwq->pt;
 203         for (;;) {
 204                 int mask;
 205                 mask = file->f_op->poll(file, table);
 206                 if (mask & POLLIN)
 207                         break;
 208                 table = NULL;
 209                 if (signal_pending(current)) {
 210                         retval = -ERESTARTSYS;
 211                         break;
 212                 }
 213                 poll_schedule(pwq, TASK_INTERRUPTIBLE);
 214         }
 215         poll_freewait(pwq);
 216         return retval;
 217 }
 218
 219 static int count_inputs(
 220                         struct file *file,
 221                         v4l2_kioctl drv)
 222 {
 223         struct v4l2_input input2;
 224         int i;
 225
 226         for (i = 0;; i++) {
 227                 memset(&input2, 0, sizeof(input2));
 228                 input2.index = i;
 229                 if (0 != drv(file, VIDIOC_ENUMINPUT, &input2))
 230                         break;
 231         }
 232         return i;
 233 }
 234
 235 static int check_size(
 236                 struct file *file,
 237                 v4l2_kioctl drv,
 238                 int *maxw,
 239                 int *maxh)
 240 {
 241         struct v4l2_fmtdesc desc2;
 242         struct v4l2_format  fmt2;
 243
 244         memset(&desc2, 0, sizeof(desc2));
 245         memset(&fmt2, 0, sizeof(fmt2));
 246
 247         desc2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 248         if (0 != drv(file, VIDIOC_ENUM_FMT, &desc2))
 249                 goto done;
 250
 251         fmt2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 252         fmt2.fmt.pix.width       = 10000;
 253         fmt2.fmt.pix.height      = 10000;
 254         fmt2.fmt.pix.pixelformat = desc2.pixelformat;
 255         if (0 != drv(file, VIDIOC_TRY_FMT, &fmt2))
 256                 goto done;
 257
 258         *maxw = fmt2.fmt.pix.width;
 259         *maxh = fmt2.fmt.pix.height;
 260
 261 done:
 262         return 0;
 263 }
 264
 265 /* ----------------------------------------------------------------- */
 266
 267 static noinline long v4l1_compat_get_capabilities(
 268                                         struct video_capability *cap,
 269                                         struct file *file,
 270                                         v4l2_kioctl drv)
 271 {
 272         long err;
 273         struct v4l2_framebuffer fbuf;
 274         struct v4l2_capability *cap2;
 275
 276         cap2 = kzalloc(sizeof(*cap2), GFP_KERNEL);
 277         if (!cap2) {
 278                 err = -ENOMEM;
 279                 return err;
 280         }
 281         memset(cap, 0, sizeof(*cap));
 282         memset(&fbuf, 0, sizeof(fbuf));
 283
 284         err = drv(file, VIDIOC_QUERYCAP, cap2);
 285         if (err < 0) {
 286                 dprintk("VIDIOCGCAP / VIDIOC_QUERYCAP: %ld\n", err);
 287                 goto done;
 288         }
 289         if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY) {
 290                 err = drv(file, VIDIOC_G_FBUF, &fbuf);
 291                 if (err < 0) {
 292                         dprintk("VIDIOCGCAP / VIDIOC_G_FBUF: %ld\n", err);
 293                         memset(&fbuf, 0, sizeof(fbuf));
 294                 }
 295                 err = 0;
 296         }
 297
 298         memcpy(cap->name, cap2->card,
 299                min(sizeof(cap->name), sizeof(cap2->card)));
 300         cap->name[sizeof(cap->name) - 1] = 0;
 301         if (cap2->capabilities & V4L2_CAP_VIDEO_CAPTURE)
 302                 cap->type |= VID_TYPE_CAPTURE;
 303         if (cap2->capabilities & V4L2_CAP_TUNER)
 304                 cap->type |= VID_TYPE_TUNER;
 305         if (cap2->capabilities & V4L2_CAP_VBI_CAPTURE)
 306                 cap->type |= VID_TYPE_TELETEXT;
 307         if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY)
 308                 cap->type |= VID_TYPE_OVERLAY;
 309         if (fbuf.capability & V4L2_FBUF_CAP_LIST_CLIPPING)
 310                 cap->type |= VID_TYPE_CLIPPING;
 311
 312         cap->channels  = count_inputs(file, drv);
 313         check_size(file, drv,
 314                    &cap->maxwidth, &cap->maxheight);
 315         cap->audios    =  0; /* FIXME */
 316         cap->minwidth  = 48; /* FIXME */
 317         cap->minheight = 32; /* FIXME */
 318
 319 done:
 320         kfree(cap2);
 321         return err;
 322 }
 323
 324 static noinline long v4l1_compat_get_frame_buffer(
 325                                         struct video_buffer *buffer,
 326                                         struct file *file,
 327                                         v4l2_kioctl drv)
 328 {
 329         long err;
 330         struct v4l2_framebuffer fbuf;
 331
 332         memset(buffer, 0, sizeof(*buffer));
 333         memset(&fbuf, 0, sizeof(fbuf));
 334
 335         err = drv(file, VIDIOC_G_FBUF, &fbuf);
 336         if (err < 0) {
 337                 dprintk("VIDIOCGFBUF / VIDIOC_G_FBUF: %ld\n", err);
 338                 goto done;
 339         }
 340         buffer->base   = fbuf.base;
 341         buffer->height = fbuf.fmt.height;
 342         buffer->width  = fbuf.fmt.width;
 343
 344         switch (fbuf.fmt.pixelformat) {
 345         case V4L2_PIX_FMT_RGB332:
 346                 buffer->depth = 8;
 347                 break;
 348         case V4L2_PIX_FMT_RGB555:
 349                 buffer->depth = 15;
 350                 break;
 351         case V4L2_PIX_FMT_RGB565:
 352                 buffer->depth = 16;
 353                 break;
 354         case V4L2_PIX_FMT_BGR24:
 355                 buffer->depth = 24;
 356                 break;
 357         case V4L2_PIX_FMT_BGR32:
 358                 buffer->depth = 32;
 359                 break;
 360         default:
 361                 buffer->depth = 0;
 362         }
 363         if (fbuf.fmt.bytesperline) {
 364                 buffer->bytesperline = fbuf.fmt.bytesperline;
 365                 if (!buffer->depth && buffer->width)
 366                         buffer->depth   = ((fbuf.fmt.bytesperline<<3)
 367                                           + (buffer->width-1))
 368                                           / buffer->width;
 369         } else {
 370                 buffer->bytesperline =
 371                         (buffer->width * buffer->depth + 7) & 7;
 372                 buffer->bytesperline >>= 3;
 373         }
 374 done:
 375         return err;
 376 }
 377
 378 static noinline long v4l1_compat_set_frame_buffer(
 379                                         struct video_buffer *buffer,
 380                                         struct file *file,
 381                                         v4l2_kioctl drv)
 382 {
 383         long err;
 384         struct v4l2_framebuffer fbuf;
 385
 386         memset(&fbuf, 0, sizeof(fbuf));
 387         fbuf.base       = buffer->base;
 388         fbuf.fmt.height = buffer->height;
 389         fbuf.fmt.width  = buffer->width;
 390         switch (buffer->depth) {
 391         case 8:
 392                 fbuf.fmt.pixelformat = V4L2_PIX_FMT_RGB332;
 393                 break;
 394         case 15:
 395                 fbuf.fmt.pixelformat = V4L2_PIX_FMT_RGB555;
 396                 break;
 397         case 16:
 398                 fbuf.fmt.pixelformat = V4L2_PIX_FMT_RGB565;
 399                 break;
 400         case 24:
 401                 fbuf.fmt.pixelformat = V4L2_PIX_FMT_BGR24;
 402                 break;
 403         case 32:
 404                 fbuf.fmt.pixelformat = V4L2_PIX_FMT_BGR32;
 405                 break;
 406         }
 407         fbuf.fmt.bytesperline = buffer->bytesperline;
 408         err = drv(file, VIDIOC_S_FBUF, &fbuf);
 409         if (err < 0)
 410                 dprintk("VIDIOCSFBUF / VIDIOC_S_FBUF: %ld\n", err);
 411         return err;
 412 }
 413
 414 static noinline long v4l1_compat_get_win_cap_dimensions(
 415                                         struct video_window *win,
 416                                         struct file *file,
 417                                         v4l2_kioctl drv)
 418 {
 419         long err;
 420         struct v4l2_format *fmt;
 421
 422         fmt = kzalloc(sizeof(*fmt), GFP_KERNEL);
 423         if (!fmt) {
 424                 err = -ENOMEM;
 425                 return err;
 426         }
 427         memset(win, 0, sizeof(*win));
 428
 429         fmt->type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
 430         err = drv(file, VIDIOC_G_FMT, fmt);
 431         if (err < 0)
 432                 dprintk("VIDIOCGWIN / VIDIOC_G_WIN: %ld\n", err);
 433         if (err == 0) {
 434                 win->x         = fmt->fmt.win.w.left;
 435                 win->y         = fmt->fmt.win.w.top;
 436                 win->width     = fmt->fmt.win.w.width;
 437                 win->height    = fmt->fmt.win.w.height;
 438                 win->chromakey = fmt->fmt.win.chromakey;
 439                 win->clips     = NULL;
 440                 win->clipcount = 0;
 441                 goto done;
 442         }
 443
 444         fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 445         err = drv(file, VIDIOC_G_FMT, fmt);
 446         if (err < 0) {
 447                 dprintk("VIDIOCGWIN / VIDIOC_G_FMT: %ld\n", err);
 448                 goto done;
 449         }
 450         win->x         = 0;
 451         win->y         = 0;
 452         win->width     = fmt->fmt.pix.width;
 453         win->height    = fmt->fmt.pix.height;
 454         win->chromakey = 0;
 455         win->clips     = NULL;
 456         win->clipcount = 0;
 457 done:
 458         kfree(fmt);
 459         return err;
 460 }
 461
 462 static noinline long v4l1_compat_set_win_cap_dimensions(
 463                                         struct video_window *win,
 464                                         struct file *file,
 465                                         v4l2_kioctl drv)
 466 {
 467         long err, err1, err2;
 468         struct v4l2_format *fmt;
 469
 470         fmt = kzalloc(sizeof(*fmt), GFP_KERNEL);
 471         if (!fmt) {
 472                 err = -ENOMEM;
 473                 return err;
 474         }
 475         fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 476         drv(file, VIDIOC_STREAMOFF, &fmt->type);
 477         err1 = drv(file, VIDIOC_G_FMT, fmt);
 478         if (err1 < 0)
 479                 dprintk("VIDIOCSWIN / VIDIOC_G_FMT: %ld\n", err1);
 480         if (err1 == 0) {
 481                 fmt->fmt.pix.width  = win->width;
 482                 fmt->fmt.pix.height = win->height;
 483                 fmt->fmt.pix.field  = V4L2_FIELD_ANY;
 484                 fmt->fmt.pix.bytesperline = 0;
 485                 err = drv(file, VIDIOC_S_FMT, fmt);
 486                 if (err < 0)
 487                         dprintk("VIDIOCSWIN / VIDIOC_S_FMT #1: %ld\n",
 488                                 err);
 489                 win->width  = fmt->fmt.pix.width;
 490                 win->height = fmt->fmt.pix.height;
 491         }
 492
 493         memset(fmt, 0, sizeof(*fmt));
 494         fmt->type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
 495         fmt->fmt.win.w.left    = win->x;
 496         fmt->fmt.win.w.top     = win->y;
 497         fmt->fmt.win.w.width   = win->width;
 498         fmt->fmt.win.w.height  = win->height;
 499         fmt->fmt.win.chromakey = win->chromakey;
 500         fmt->fmt.win.clips     = (void __user *)win->clips;
 501         fmt->fmt.win.clipcount = win->clipcount;
 502         err2 = drv(file, VIDIOC_S_FMT, fmt);
 503         if (err2 < 0)
 504                 dprintk("VIDIOCSWIN / VIDIOC_S_FMT #2: %ld\n", err2);
 505
 506         if (err1 != 0 && err2 != 0)
 507                 err = err1;
 508         else
 509                 err = 0;
 510         kfree(fmt);
 511         return err;
 512 }
 513
 514 static noinline long v4l1_compat_turn_preview_on_off(
 515                                         int *on,
 516                                         struct file *file,
 517                                         v4l2_kioctl drv)
 518 {
 519         long err;
 520         enum v4l2_buf_type captype = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 521
 522         if (0 == *on) {
 523                 /* dirty hack time.  But v4l1 has no STREAMOFF
 524                  * equivalent in the API, and this one at
 525                  * least comes close ... */
 526                 drv(file, VIDIOC_STREAMOFF, &captype);
 527         }
 528         err = drv(file, VIDIOC_OVERLAY, on);
 529         if (err < 0)
 530                 dprintk("VIDIOCCAPTURE / VIDIOC_PREVIEW: %ld\n", err);
 531         return err;
 532 }
 533
 534 static noinline long v4l1_compat_get_input_info(
 535                                         struct video_channel *chan,
 536                                         struct file *file,
 537                                         v4l2_kioctl drv)
 538 {
 539         long err;
 540         struct v4l2_input       input2;
 541         v4l2_std_id             sid;
 542
 543         memset(&input2, 0, sizeof(input2));
 544         input2.index = chan->channel;
 545         err = drv(file, VIDIOC_ENUMINPUT, &input2);
 546         if (err < 0) {
 547                 dprintk("VIDIOCGCHAN / VIDIOC_ENUMINPUT: "
 548                         "channel=%d err=%ld\n", chan->channel, err);
 549                 goto done;
 550         }
 551         chan->channel = input2.index;
 552         memcpy(chan->name, input2.name,
 553                min(sizeof(chan->name), sizeof(input2.name)));
 554         chan->name[sizeof(chan->name) - 1] = 0;
 555         chan->tuners = (input2.type == V4L2_INPUT_TYPE_TUNER) ? 1 : 0;
 556         chan->flags = (chan->tuners) ? VIDEO_VC_TUNER : 0;
 557         switch (input2.type) {
 558         case V4L2_INPUT_TYPE_TUNER:
 559                 chan->type = VIDEO_TYPE_TV;
 560                 break;
 561         default:
 562         case V4L2_INPUT_TYPE_CAMERA:
 563                 chan->type = VIDEO_TYPE_CAMERA;
 564                 break;
 565         }
 566         chan->norm = 0;
 567         /* Note: G_STD might not be present for radio receivers,
 568          * so we should ignore any errors. */
 569         if (drv(file, VIDIOC_G_STD, &sid) == 0) {
 570                 if (sid & V4L2_STD_PAL)
 571                         chan->norm = VIDEO_MODE_PAL;
 572                 if (sid & V4L2_STD_NTSC)
 573                         chan->norm = VIDEO_MODE_NTSC;
 574                 if (sid & V4L2_STD_SECAM)
 575                         chan->norm = VIDEO_MODE_SECAM;
 576                 if (sid == V4L2_STD_ALL)
 577                         chan->norm = VIDEO_MODE_AUTO;
 578         }
 579 done:
 580         return err;
 581 }
 582
 583 static noinline long v4l1_compat_set_input(
 584                                         struct video_channel *chan,
 585                                         struct file *file,
 586                                         v4l2_kioctl drv)
 587 {
 588         long err;
 589         v4l2_std_id sid = 0;
 590
 591         err = drv(file, VIDIOC_S_INPUT, &chan->channel);
 592         if (err < 0)
 593                 dprintk("VIDIOCSCHAN / VIDIOC_S_INPUT: %ld\n", err);
 594         switch (chan->norm) {
 595         case VIDEO_MODE_PAL:
 596                 sid = V4L2_STD_PAL;
 597                 break;
 598         case VIDEO_MODE_NTSC:
 599                 sid = V4L2_STD_NTSC;
 600                 break;
 601         case VIDEO_MODE_SECAM:
 602                 sid = V4L2_STD_SECAM;
 603                 break;
 604         case VIDEO_MODE_AUTO:
 605                 sid = V4L2_STD_ALL;
 606                 break;
 607         }
 608         if (0 != sid) {
 609                 err = drv(file, VIDIOC_S_STD, &sid);
 610                 if (err < 0)
 611                         dprintk("VIDIOCSCHAN / VIDIOC_S_STD: %ld\n", err);
 612         }
 613         return err;
 614 }
 615
 616 static noinline long v4l1_compat_get_picture(
 617                                         struct video_picture *pict,
 618                                         struct file *file,
 619                                         v4l2_kioctl drv)
 620 {
 621         long err;
 622         struct v4l2_format *fmt;
 623
 624         fmt = kzalloc(sizeof(*fmt), GFP_KERNEL);
 625         if (!fmt) {
 626                 err = -ENOMEM;
 627                 return err;
 628         }
 629
 630         pict->brightness = get_v4l_control(file,
 631                                            V4L2_CID_BRIGHTNESS, drv);
 632         pict->hue = get_v4l_control(file,
 633                                     V4L2_CID_HUE, drv);
 634         pict->contrast = get_v4l_control(file,
 635                                          V4L2_CID_CONTRAST, drv);
 636         pict->colour = get_v4l_control(file,
 637                                        V4L2_CID_SATURATION, drv);
 638         pict->whiteness = get_v4l_control(file,
 639                                           V4L2_CID_WHITENESS, drv);
 640
 641         fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 642         err = drv(file, VIDIOC_G_FMT, fmt);
 643         if (err < 0) {
 644                 dprintk("VIDIOCGPICT / VIDIOC_G_FMT: %ld\n", err);
 645                 goto done;
 646         }
 647
 648         if (fmt->fmt.pix.width)
 649         {
 650                 pict->depth   = ((fmt->fmt.pix.bytesperline << 3)
 651                                  + (fmt->fmt.pix.width - 1))
 652                                  / fmt->fmt.pix.width;
 653         } else {
 654                 err = -EINVAL;
 655                 goto done;
 656         }
 657
 658         pict->palette = pixelformat_to_palette(
 659                 fmt->fmt.pix.pixelformat);
 660 done:
 661         kfree(fmt);
 662         return err;
 663 }
 664
 665 static noinline long v4l1_compat_set_picture(
 666                                         struct video_picture *pict,
 667                                         struct file *file,
 668                                         v4l2_kioctl drv)
 669 {
 670         long err;
 671         struct v4l2_framebuffer fbuf;
 672         int mem_err = 0, ovl_err = 0;
 673         struct v4l2_format *fmt;
 674
 675         fmt = kzalloc(sizeof(*fmt), GFP_KERNEL);
 676         if (!fmt) {
 677                 err = -ENOMEM;
 678                 return err;
 679         }
 680         memset(&fbuf, 0, sizeof(fbuf));
 681
 682         set_v4l_control(file,
 683                         V4L2_CID_BRIGHTNESS, pict->brightness, drv);
 684         set_v4l_control(file,
 685                         V4L2_CID_HUE, pict->hue, drv);
 686         set_v4l_control(file,
 687                         V4L2_CID_CONTRAST, pict->contrast, drv);
 688         set_v4l_control(file,
 689                         V4L2_CID_SATURATION, pict->colour, drv);
 690         set_v4l_control(file,
 691                         V4L2_CID_WHITENESS, pict->whiteness, drv);
 692         /*
 693          * V4L1 uses this ioctl to set both memory capture and overlay
 694          * pixel format, while V4L2 has two different ioctls for this.
 695          * Some cards may not support one or the other, and may support
 696          * different pixel formats for memory vs overlay.
 697          */
 698
 699         fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 700         err = drv(file, VIDIOC_G_FMT, fmt);
 701         /* If VIDIOC_G_FMT failed, then the driver likely doesn't
 702            support memory capture.  Trying to set the memory capture
 703            parameters would be pointless.  */
 704         if (err < 0) {
 705                 dprintk("VIDIOCSPICT / VIDIOC_G_FMT: %ld\n", err);
 706                 mem_err = -1000;  /* didn't even try */
 707         } else if (fmt->fmt.pix.pixelformat !=
 708                  palette_to_pixelformat(pict->palette)) {
 709                 fmt->fmt.pix.pixelformat = palette_to_pixelformat(
 710                         pict->palette);
 711                 mem_err = drv(file, VIDIOC_S_FMT, fmt);
 712                 if (mem_err < 0)
 713                         dprintk("VIDIOCSPICT / VIDIOC_S_FMT: %d\n",
 714                                 mem_err);
 715         }
 716
 717         err = drv(file, VIDIOC_G_FBUF, &fbuf);
 718         /* If VIDIOC_G_FBUF failed, then the driver likely doesn't
 719            support overlay.  Trying to set the overlay parameters
 720            would be quite pointless.  */
 721         if (err < 0) {
 722                 dprintk("VIDIOCSPICT / VIDIOC_G_FBUF: %ld\n", err);
 723                 ovl_err = -1000;  /* didn't even try */
 724         } else if (fbuf.fmt.pixelformat !=
 725                  palette_to_pixelformat(pict->palette)) {
 726                 fbuf.fmt.pixelformat = palette_to_pixelformat(
 727                         pict->palette);
 728                 ovl_err = drv(file, VIDIOC_S_FBUF, &fbuf);
 729                 if (ovl_err < 0)
 730                         dprintk("VIDIOCSPICT / VIDIOC_S_FBUF: %d\n",
 731                                 ovl_err);
 732         }
 733         if (ovl_err < 0 && mem_err < 0) {
 734                 /* ioctl failed, couldn't set either parameter */
 735                 if (mem_err != -1000)
 736                         err = mem_err;
 737                 else if (ovl_err == -EPERM)
 738                         err = 0;
 739                 else
 740                         err = ovl_err;
 741         } else
 742                 err = 0;
 743         kfree(fmt);
 744         return err;
 745 }
 746
 747 static noinline long v4l1_compat_get_tuner(
 748                                         struct video_tuner *tun,
 749                                         struct file *file,
 750                                         v4l2_kioctl drv)
 751 {
 752         long err;
 753         int i;
 754         struct v4l2_tuner       tun2;
 755         struct v4l2_standard    std2;
 756         v4l2_std_id             sid;
 757
 758         memset(&tun2, 0, sizeof(tun2));
 759         err = drv(file, VIDIOC_G_TUNER, &tun2);
 760         if (err < 0) {
 761                 dprintk("VIDIOCGTUNER / VIDIOC_G_TUNER: %ld\n", err);
 762                 goto done;
 763         }
 764         memcpy(tun->name, tun2.name,
 765                min(sizeof(tun->name), sizeof(tun2.name)));
 766         tun->name[sizeof(tun->name) - 1] = 0;
 767         tun->rangelow = tun2.rangelow;
 768         tun->rangehigh = tun2.rangehigh;
 769         tun->flags = 0;
 770         tun->mode = VIDEO_MODE_AUTO;
 771
 772         for (i = 0; i < 64; i++) {
 773                 memset(&std2, 0, sizeof(std2));
 774                 std2.index = i;
 775                 if (0 != drv(file, VIDIOC_ENUMSTD, &std2))
 776                         break;
 777                 if (std2.id & V4L2_STD_PAL)
 778                         tun->flags |= VIDEO_TUNER_PAL;
 779                 if (std2.id & V4L2_STD_NTSC)
 780                         tun->flags |= VIDEO_TUNER_NTSC;
 781                 if (std2.id & V4L2_STD_SECAM)
 782                         tun->flags |= VIDEO_TUNER_SECAM;
 783         }
 784
 785         /* Note: G_STD might not be present for radio receivers,
 786          * so we should ignore any errors. */
 787         if (drv(file, VIDIOC_G_STD, &sid) == 0) {
 788                 if (sid & V4L2_STD_PAL)
 789                         tun->mode = VIDEO_MODE_PAL;
 790                 if (sid & V4L2_STD_NTSC)
 791                         tun->mode = VIDEO_MODE_NTSC;
 792                 if (sid & V4L2_STD_SECAM)
 793                         tun->mode = VIDEO_MODE_SECAM;
 794         }
 795
 796         if (tun2.capability & V4L2_TUNER_CAP_LOW)
 797                 tun->flags |= VIDEO_TUNER_LOW;
 798         if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO)
 799                 tun->flags |= VIDEO_TUNER_STEREO_ON;
 800         tun->signal = tun2.signal;
 801 done:
 802         return err;
 803 }
 804
 805 static noinline long v4l1_compat_select_tuner(
 806                                         struct video_tuner *tun,
 807                                         struct file *file,
 808                                         v4l2_kioctl drv)
 809 {
 810         long err;
 811         struct v4l2_tuner       t;/*84 bytes on x86_64*/
 812         memset(&t, 0, sizeof(t));
 813
 814         t.index = tun->tuner;
 815
 816         err = drv(file, VIDIOC_S_TUNER, &t);
 817         if (err < 0)
 818                 dprintk("VIDIOCSTUNER / VIDIOC_S_TUNER: %ld\n", err);
 819         return err;
 820 }
 821
 822 static noinline long v4l1_compat_get_frequency(
 823                                         unsigned long *freq,
 824                                         struct file *file,
 825                                         v4l2_kioctl drv)
 826 {
 827         long err;
 828         struct v4l2_frequency   freq2;
 829         memset(&freq2, 0, sizeof(freq2));
 830
 831         freq2.tuner = 0;
 832         err = drv(file, VIDIOC_G_FREQUENCY, &freq2);
 833         if (err < 0)
 834                 dprintk("VIDIOCGFREQ / VIDIOC_G_FREQUENCY: %ld\n", err);
 835         if (0 == err)
 836                 *freq = freq2.frequency;
 837         return err;
 838 }
 839
 840 static noinline long v4l1_compat_set_frequency(
 841                                         unsigned long *freq,
 842                                         struct file *file,
 843                                         v4l2_kioctl drv)
 844 {
 845         long err;
 846         struct v4l2_frequency   freq2;
 847         memset(&freq2, 0, sizeof(freq2));
 848
 849         drv(file, VIDIOC_G_FREQUENCY, &freq2);
 850         freq2.frequency = *freq;
 851         err = drv(file, VIDIOC_S_FREQUENCY, &freq2);
 852         if (err < 0)
 853                 dprintk("VIDIOCSFREQ / VIDIOC_S_FREQUENCY: %ld\n", err);
 854         return err;
 855 }
 856
 857 static noinline long v4l1_compat_get_audio(
 858                                         struct video_audio *aud,
 859                                         struct file *file,
 860                                         v4l2_kioctl drv)
 861 {
 862         long err;
 863         int i;
 864         struct v4l2_queryctrl   qctrl2;
 865         struct v4l2_audio       aud2;
 866         struct v4l2_tuner       tun2;
 867         memset(&aud2, 0, sizeof(aud2));
 868
 869         err = drv(file, VIDIOC_G_AUDIO, &aud2);
 870         if (err < 0) {
 871                 dprintk("VIDIOCGAUDIO / VIDIOC_G_AUDIO: %ld\n", err);
 872                 goto done;
 873         }
 874         memcpy(aud->name, aud2.name,
 875                min(sizeof(aud->name), sizeof(aud2.name)));
 876         aud->name[sizeof(aud->name) - 1] = 0;
 877         aud->audio = aud2.index;
 878         aud->flags = 0;
 879         i = get_v4l_control(file, V4L2_CID_AUDIO_VOLUME, drv);
 880         if (i >= 0) {
 881                 aud->volume = i;
 882                 aud->flags |= VIDEO_AUDIO_VOLUME;
 883         }
 884         i = get_v4l_control(file, V4L2_CID_AUDIO_BASS, drv);
 885         if (i >= 0) {
 886                 aud->bass = i;
 887                 aud->flags |= VIDEO_AUDIO_BASS;
 888         }
 889         i = get_v4l_control(file, V4L2_CID_AUDIO_TREBLE, drv);
 890         if (i >= 0) {
 891                 aud->treble = i;
 892                 aud->flags |= VIDEO_AUDIO_TREBLE;
 893         }
 894         i = get_v4l_control(file, V4L2_CID_AUDIO_BALANCE, drv);
 895         if (i >= 0) {
 896                 aud->balance = i;
 897                 aud->flags |= VIDEO_AUDIO_BALANCE;
 898         }
 899         i = get_v4l_control(file, V4L2_CID_AUDIO_MUTE, drv);
 900         if (i >= 0) {
 901                 if (i)
 902                         aud->flags |= VIDEO_AUDIO_MUTE;
 903                 aud->flags |= VIDEO_AUDIO_MUTABLE;
 904         }
 905         aud->step = 1;
 906         qctrl2.id = V4L2_CID_AUDIO_VOLUME;
 907         if (drv(file, VIDIOC_QUERYCTRL, &qctrl2) == 0 &&
 908             !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED))
 909                 aud->step = qctrl2.step;
 910         aud->mode = 0;
 911
 912         memset(&tun2, 0, sizeof(tun2));
 913         err = drv(file, VIDIOC_G_TUNER, &tun2);
 914         if (err < 0) {
 915                 dprintk("VIDIOCGAUDIO / VIDIOC_G_TUNER: %ld\n", err);
 916                 err = 0;
 917                 goto done;
 918         }
 919
 920         if (tun2.rxsubchans & V4L2_TUNER_SUB_LANG2)
 921                 aud->mode = VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2;
 922         else if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO)
 923                 aud->mode = VIDEO_SOUND_STEREO;
 924         else if (tun2.rxsubchans & V4L2_TUNER_SUB_MONO)
 925                 aud->mode = VIDEO_SOUND_MONO;
 926 done:
 927         return err;
 928 }
 929
 930 static noinline long v4l1_compat_set_audio(
 931                                         struct video_audio *aud,
 932                                         struct file *file,
 933                                         v4l2_kioctl drv)
 934 {
 935         long err;
 936         struct v4l2_audio       aud2;
 937         struct v4l2_tuner       tun2;
 938
 939         memset(&aud2, 0, sizeof(aud2));
 940         memset(&tun2, 0, sizeof(tun2));
 941
 942         aud2.index = aud->audio;
 943         err = drv(file, VIDIOC_S_AUDIO, &aud2);
 944         if (err < 0) {
 945                 dprintk("VIDIOCSAUDIO / VIDIOC_S_AUDIO: %ld\n", err);
 946                 goto done;
 947         }
 948
 949         set_v4l_control(file, V4L2_CID_AUDIO_VOLUME,
 950                         aud->volume, drv);
 951         set_v4l_control(file, V4L2_CID_AUDIO_BASS,
 952                         aud->bass, drv);
 953         set_v4l_control(file, V4L2_CID_AUDIO_TREBLE,
 954                         aud->treble, drv);
 955         set_v4l_control(file, V4L2_CID_AUDIO_BALANCE,
 956                         aud->balance, drv);
 957         set_v4l_control(file, V4L2_CID_AUDIO_MUTE,
 958                         !!(aud->flags & VIDEO_AUDIO_MUTE), drv);
 959
 960         err = drv(file, VIDIOC_G_TUNER, &tun2);
 961         if (err < 0)
 962                 dprintk("VIDIOCSAUDIO / VIDIOC_G_TUNER: %ld\n", err);
 963         if (err == 0) {
 964                 switch (aud->mode) {
 965                 default:
 966                 case VIDEO_SOUND_MONO:
 967                 case VIDEO_SOUND_LANG1:
 968                         tun2.audmode = V4L2_TUNER_MODE_MONO;
 969                         break;
 970                 case VIDEO_SOUND_STEREO:
 971                         tun2.audmode = V4L2_TUNER_MODE_STEREO;
 972                         break;
 973                 case VIDEO_SOUND_LANG2:
 974                         tun2.audmode = V4L2_TUNER_MODE_LANG2;
 975                         break;
 976                 }
 977                 err = drv(file, VIDIOC_S_TUNER, &tun2);
 978                 if (err < 0)
 979                         dprintk("VIDIOCSAUDIO / VIDIOC_S_TUNER: %ld\n", err);
 980         }
 981         err = 0;
 982 done:
 983         return err;
 984 }
 985
 986 static noinline long v4l1_compat_capture_frame(
 987                                         struct video_mmap *mm,
 988                                         struct file *file,
 989                                         v4l2_kioctl drv)
 990 {
 991         long err;
 992         enum v4l2_buf_type      captype = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 993         struct v4l2_buffer      buf;
 994         struct v4l2_format      *fmt;
 995
 996         fmt = kzalloc(sizeof(*fmt), GFP_KERNEL);
 997         if (!fmt) {
 998                 err = -ENOMEM;
 999                 return err;
1000         }
1001         memset(&buf, 0, sizeof(buf));
1002
1003         fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1004         err = drv(file, VIDIOC_G_FMT, fmt);
1005         if (err < 0) {
1006                 dprintk("VIDIOCMCAPTURE / VIDIOC_G_FMT: %ld\n", err);
1007                 goto done;
1008         }
1009         if (mm->width   != fmt->fmt.pix.width  ||
1010             mm->height  != fmt->fmt.pix.height ||
1011             palette_to_pixelformat(mm->format) !=
1012             fmt->fmt.pix.pixelformat) {
1013                 /* New capture format...  */
1014                 fmt->fmt.pix.width = mm->width;
1015                 fmt->fmt.pix.height = mm->height;
1016                 fmt->fmt.pix.pixelformat =
1017                         palette_to_pixelformat(mm->format);
1018                 fmt->fmt.pix.field = V4L2_FIELD_ANY;
1019                 fmt->fmt.pix.bytesperline = 0;
1020                 err = drv(file, VIDIOC_S_FMT, fmt);
1021                 if (err < 0) {
1022                         dprintk("VIDIOCMCAPTURE / VIDIOC_S_FMT: %ld\n", err);
1023                         goto done;
1024                 }
1025         }
1026         buf.index = mm->frame;
1027         buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1028         err = drv(file, VIDIOC_QUERYBUF, &buf);
1029         if (err < 0) {
1030                 dprintk("VIDIOCMCAPTURE / VIDIOC_QUERYBUF: %ld\n", err);
1031                 goto done;
1032         }
1033         err = drv(file, VIDIOC_QBUF, &buf);
1034         if (err < 0) {
1035                 dprintk("VIDIOCMCAPTURE / VIDIOC_QBUF: %ld\n", err);
1036                 goto done;
1037         }
1038         err = drv(file, VIDIOC_STREAMON, &captype);
1039         if (err < 0)
1040                 dprintk("VIDIOCMCAPTURE / VIDIOC_STREAMON: %ld\n", err);
1041 done:
1042         kfree(fmt);
1043         return err;
1044 }
1045
1046 static noinline long v4l1_compat_sync(
1047                                 int *i,
1048                                 struct file *file,
1049                                 v4l2_kioctl drv)
1050 {
1051         long err;
1052         enum v4l2_buf_type captype = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1053         struct v4l2_buffer buf;
1054         struct poll_wqueues *pwq;
1055
1056         memset(&buf, 0, sizeof(buf));
1057         buf.index = *i;
1058         buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1059         err = drv(file, VIDIOC_QUERYBUF, &buf);
1060         if (err < 0) {
1061                 /*  No such buffer */
1062                 dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %ld\n", err);
1063                 goto done;
1064         }
1065         if (!(buf.flags & V4L2_BUF_FLAG_MAPPED)) {
1066                 /* Buffer is not mapped  */
1067                 err = -EINVAL;
1068                 goto done;
1069         }
1070
1071         /* make sure capture actually runs so we don't block forever */
1072         err = drv(file, VIDIOC_STREAMON, &captype);
1073         if (err < 0) {
1074                 dprintk("VIDIOCSYNC / VIDIOC_STREAMON: %ld\n", err);
1075                 goto done;
1076         }
1077
1078         pwq = kmalloc(sizeof(*pwq), GFP_KERNEL);
1079         /*  Loop as long as the buffer is queued, but not done  */
1080         while ((buf.flags & (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE))
1081                                                 == V4L2_BUF_FLAG_QUEUED) {
1082                 err = poll_one(file, pwq);
1083                 if (err < 0 ||  /* error or sleep was interrupted  */
1084                     err == 0)   /* timeout? Shouldn't occur.  */
1085                         break;
1086                 err = drv(file, VIDIOC_QUERYBUF, &buf);
1087                 if (err < 0)
1088                         dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %ld\n", err);
1089         }
1090         kfree(pwq);
1091         if (!(buf.flags & V4L2_BUF_FLAG_DONE)) /* not done */
1092                 goto done;
1093         do {
1094                 err = drv(file, VIDIOC_DQBUF, &buf);
1095                 if (err < 0)
1096                         dprintk("VIDIOCSYNC / VIDIOC_DQBUF: %ld\n", err);
1097         } while (err == 0 && buf.index != *i);
1098 done:
1099         return err;
1100 }
1101
1102 static noinline long v4l1_compat_get_vbi_format(
1103                                 struct vbi_format *fmt,
1104                                 struct file *file,
1105                                 v4l2_kioctl drv)
1106 {
1107         long err;
1108         struct v4l2_format *fmt2;
1109
1110         fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
1111         if (!fmt2) {
1112                 err = -ENOMEM;
1113                 return err;
1114         }
1115         fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1116
1117         err = drv(file, VIDIOC_G_FMT, fmt2);
1118         if (err < 0) {
1119                 dprintk("VIDIOCGVBIFMT / VIDIOC_G_FMT: %ld\n", err);
1120                 goto done;
1121         }
1122         if (fmt2->fmt.vbi.sample_format != V4L2_PIX_FMT_GREY) {
1123                 err = -EINVAL;
1124                 goto done;
1125         }
1126         memset(fmt, 0, sizeof(*fmt));
1127         fmt->samples_per_line = fmt2->fmt.vbi.samples_per_line;
1128         fmt->sampling_rate    = fmt2->fmt.vbi.sampling_rate;
1129         fmt->sample_format    = VIDEO_PALETTE_RAW;
1130         fmt->start[0]         = fmt2->fmt.vbi.start[0];
1131         fmt->count[0]         = fmt2->fmt.vbi.count[0];
1132         fmt->start[1]         = fmt2->fmt.vbi.start[1];
1133         fmt->count[1]         = fmt2->fmt.vbi.count[1];
1134         fmt->flags            = fmt2->fmt.vbi.flags & 0x03;
1135 done:
1136         kfree(fmt2);
1137         return err;
1138 }
1139
1140 static noinline long v4l1_compat_set_vbi_format(
1141                                 struct vbi_format *fmt,
1142                                 struct file *file,
1143                                 v4l2_kioctl drv)
1144 {
1145         long err;
1146         struct v4l2_format      *fmt2 = NULL;
1147
1148         if (VIDEO_PALETTE_RAW != fmt->sample_format) {
1149                 err = -EINVAL;
1150                 return err;
1151         }
1152
1153         fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
1154         if (!fmt2) {
1155                 err = -ENOMEM;
1156                 return err;
1157         }
1158         fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1159         fmt2->fmt.vbi.samples_per_line = fmt->samples_per_line;
1160         fmt2->fmt.vbi.sampling_rate    = fmt->sampling_rate;
1161         fmt2->fmt.vbi.sample_format    = V4L2_PIX_FMT_GREY;
1162         fmt2->fmt.vbi.start[0]         = fmt->start[0];
1163         fmt2->fmt.vbi.count[0]         = fmt->count[0];
1164         fmt2->fmt.vbi.start[1]         = fmt->start[1];
1165         fmt2->fmt.vbi.count[1]         = fmt->count[1];
1166         fmt2->fmt.vbi.flags            = fmt->flags;
1167         err = drv(file, VIDIOC_TRY_FMT, fmt2);
1168         if (err < 0) {
1169                 dprintk("VIDIOCSVBIFMT / VIDIOC_TRY_FMT: %ld\n", err);
1170                 goto done;
1171         }
1172
1173         if (fmt2->fmt.vbi.samples_per_line != fmt->samples_per_line ||
1174             fmt2->fmt.vbi.sampling_rate    != fmt->sampling_rate    ||
1175             fmt2->fmt.vbi.sample_format    != V4L2_PIX_FMT_GREY     ||
1176             fmt2->fmt.vbi.start[0]         != fmt->start[0]         ||
1177             fmt2->fmt.vbi.count[0]         != fmt->count[0]         ||
1178             fmt2->fmt.vbi.start[1]         != fmt->start[1]         ||
1179             fmt2->fmt.vbi.count[1]         != fmt->count[1]         ||
1180             fmt2->fmt.vbi.flags            != fmt->flags) {
1181                 err = -EINVAL;
1182                 goto done;
1183         }
1184         err = drv(file, VIDIOC_S_FMT, fmt2);
1185         if (err < 0)
1186                 dprintk("VIDIOCSVBIFMT / VIDIOC_S_FMT: %ld\n", err);
1187 done:
1188         kfree(fmt2);
1189         return err;
1190 }
1191
1192 /*
1193  *      This function is exported.
1194  */
1195 long
1196 v4l_compat_translate_ioctl(struct file          *file,
1197                            int                  cmd,
1198                            void                 *arg,
1199                            v4l2_kioctl          drv)
1200 {
1201         long err;
1202
1203         switch (cmd) {
1204         case VIDIOCGCAP:        /* capability */
1205                 err = v4l1_compat_get_capabilities(arg, file, drv);
1206                 break;
1207         case VIDIOCGFBUF: /*  get frame buffer  */
1208                 err = v4l1_compat_get_frame_buffer(arg, file, drv);
1209                 break;
1210         case VIDIOCSFBUF: /*  set frame buffer  */
1211                 err = v4l1_compat_set_frame_buffer(arg, file, drv);
1212                 break;
1213         case VIDIOCGWIN: /*  get window or capture dimensions  */
1214                 err = v4l1_compat_get_win_cap_dimensions(arg, file, drv);
1215                 break;
1216         case VIDIOCSWIN: /*  set window and/or capture dimensions  */
1217                 err = v4l1_compat_set_win_cap_dimensions(arg, file, drv);
1218                 break;
1219         case VIDIOCCAPTURE: /*  turn on/off preview  */
1220                 err = v4l1_compat_turn_preview_on_off(arg, file, drv);
1221                 break;
1222         case VIDIOCGCHAN: /*  get input information  */
1223                 err = v4l1_compat_get_input_info(arg, file, drv);
1224                 break;
1225         case VIDIOCSCHAN: /*  set input  */
1226                 err = v4l1_compat_set_input(arg, file, drv);
1227                 break;
1228         case VIDIOCGPICT: /*  get tone controls & partial capture format  */
1229                 err = v4l1_compat_get_picture(arg, file, drv);
1230                 break;
1231         case VIDIOCSPICT: /*  set tone controls & partial capture format  */
1232                 err = v4l1_compat_set_picture(arg, file, drv);
1233                 break;
1234         case VIDIOCGTUNER: /*  get tuner information  */
1235                 err = v4l1_compat_get_tuner(arg, file, drv);
1236                 break;
1237         case VIDIOCSTUNER: /*  select a tuner input  */
1238                 err = v4l1_compat_select_tuner(arg, file, drv);
1239                 break;
1240         case VIDIOCGFREQ: /*  get frequency  */
1241                 err = v4l1_compat_get_frequency(arg, file, drv);
1242                 break;
1243         case VIDIOCSFREQ: /*  set frequency  */
1244                 err = v4l1_compat_set_frequency(arg, file, drv);
1245                 break;
1246         case VIDIOCGAUDIO: /*  get audio properties/controls  */
1247                 err = v4l1_compat_get_audio(arg, file, drv);
1248                 break;
1249         case VIDIOCSAUDIO: /*  set audio controls  */
1250                 err = v4l1_compat_set_audio(arg, file, drv);
1251                 break;
1252         case VIDIOCMCAPTURE: /*  capture a frame  */
1253                 err = v4l1_compat_capture_frame(arg, file, drv);
1254                 break;
1255         case VIDIOCSYNC: /*  wait for a frame  */
1256                 err = v4l1_compat_sync(arg, file, drv);
1257                 break;
1258         case VIDIOCGVBIFMT: /* query VBI data capture format */
1259                 err = v4l1_compat_get_vbi_format(arg, file, drv);
1260                 break;
1261         case VIDIOCSVBIFMT:
1262                 err = v4l1_compat_set_vbi_format(arg, file, drv);
1263                 break;
1264         default:
1265                 err = -ENOIOCTLCMD;
1266                 break;
1267         }
1268
1269         return err;
1270 }
1271 EXPORT_SYMBOL(v4l_compat_translate_ioctl);
1272
1273 /*
1274  * Local variables:
1275  * c-basic-offset: 8
1276  * End:
1277  */