drivers/media/video/videodev.c

   1 /*
   2  * Video capture interface for Linux version 2
   3  *
   4  *      A generic video device interface for the LINUX operating system
   5  *      using a set of device structures/vectors for low level operations.
   6  *
   7  *      This program is free software; you can redistribute it and/or
   8  *      modify it under the terms of the GNU General Public License
   9  *      as published by the Free Software Foundation; either version
  10  *      2 of the License, or (at your option) any later version.
  11  *
  12  * Authors:     Alan Cox, <alan@redhat.com> (version 1)
  13  *              Mauro Carvalho Chehab <mchehab@infradead.org> (version 2)
  14  *
  15  * Fixes:       20000516  Claudio Matsuoka <claudio@conectiva.com>
  16  *              - Added procfs support
  17  */
  18
  19 #define dbgarg(cmd, fmt, arg...) \
  20                 if (vfd->debug & V4L2_DEBUG_IOCTL_ARG)                  \
  21                         printk (KERN_DEBUG "%s: ",  vfd->name);         \
  22                         v4l_printk_ioctl(cmd);                          \
  23                         printk (KERN_DEBUG "%s: " fmt, vfd->name, ## arg);
  24
  25 #define dbgarg2(fmt, arg...) \
  26                 if (vfd->debug & V4L2_DEBUG_IOCTL_ARG)                  \
  27                         printk (KERN_DEBUG "%s: " fmt, vfd->name, ## arg);
  28
  29 #include <linux/module.h>
  30 #include <linux/types.h>
  31 #include <linux/kernel.h>
  32 #include <linux/sched.h>
  33 #include <linux/smp_lock.h>
  34 #include <linux/mm.h>
  35 #include <linux/string.h>
  36 #include <linux/errno.h>
  37 #include <linux/init.h>
  38 #include <linux/kmod.h>
  39 #include <linux/slab.h>
  40 #include <linux/devfs_fs_kernel.h>
  41 #include <asm/uaccess.h>
  42 #include <asm/system.h>
  43
  44 #define __OLD_VIDIOC_ /* To allow fixing old calls*/
  45 #include <linux/videodev2.h>
  46
  47 #ifdef CONFIG_VIDEO_V4L1
  48 #include <linux/videodev.h>
  49 #endif
  50 #include <media/v4l2-common.h>
  51
  52 #define VIDEO_NUM_DEVICES       256
  53 #define VIDEO_NAME              "video4linux"
  54
  55 /*
  56  *      sysfs stuff
  57  */
  58
  59 static ssize_t show_name(struct class_device *cd, char *buf)
  60 {
  61         struct video_device *vfd = container_of(cd, struct video_device,
  62                                                                 class_dev);
  63         return sprintf(buf,"%.*s\n",(int)sizeof(vfd->name),vfd->name);
  64 }
  65
  66 static CLASS_DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
  67
  68 struct video_device *video_device_alloc(void)
  69 {
  70         struct video_device *vfd;
  71
  72         vfd = kzalloc(sizeof(*vfd),GFP_KERNEL);
  73         return vfd;
  74 }
  75
  76 void video_device_release(struct video_device *vfd)
  77 {
  78         kfree(vfd);
  79 }
  80
  81 static void video_release(struct class_device *cd)
  82 {
  83         struct video_device *vfd = container_of(cd, struct video_device,
  84                                                                 class_dev);
  85
  86 #if 1
  87         /* needed until all drivers are fixed */
  88         if (!vfd->release)
  89                 return;
  90 #endif
  91         vfd->release(vfd);
  92 }
  93
  94 static struct class video_class = {
  95         .name    = VIDEO_NAME,
  96         .release = video_release,
  97 };
  98
  99 /*
 100  *      Active devices
 101  */
 102
 103 static struct video_device *video_device[VIDEO_NUM_DEVICES];
 104 static DEFINE_MUTEX(videodev_lock);
 105
 106 struct video_device* video_devdata(struct file *file)
 107 {
 108         return video_device[iminor(file->f_dentry->d_inode)];
 109 }
 110
 111 /*
 112  *      Open a video device - FIXME: Obsoleted
 113  */
 114 static int video_open(struct inode *inode, struct file *file)
 115 {
 116         unsigned int minor = iminor(inode);
 117         int err = 0;
 118         struct video_device *vfl;
 119         const struct file_operations *old_fops;
 120
 121         if(minor>=VIDEO_NUM_DEVICES)
 122                 return -ENODEV;
 123         mutex_lock(&videodev_lock);
 124         vfl=video_device[minor];
 125         if(vfl==NULL) {
 126                 mutex_unlock(&videodev_lock);
 127                 request_module("char-major-%d-%d", VIDEO_MAJOR, minor);
 128                 mutex_lock(&videodev_lock);
 129                 vfl=video_device[minor];
 130                 if (vfl==NULL) {
 131                         mutex_unlock(&videodev_lock);
 132                         return -ENODEV;
 133                 }
 134         }
 135         old_fops = file->f_op;
 136         file->f_op = fops_get(vfl->fops);
 137         if(file->f_op->open)
 138                 err = file->f_op->open(inode,file);
 139         if (err) {
 140                 fops_put(file->f_op);
 141                 file->f_op = fops_get(old_fops);
 142         }
 143         fops_put(old_fops);
 144         mutex_unlock(&videodev_lock);
 145         return err;
 146 }
 147
 148 /*
 149  * helper function -- handles userspace copying for ioctl arguments
 150  */
 151
 152 #ifdef __OLD_VIDIOC_
 153 static unsigned int
 154 video_fix_command(unsigned int cmd)
 155 {
 156         switch (cmd) {
 157         case VIDIOC_OVERLAY_OLD:
 158                 cmd = VIDIOC_OVERLAY;
 159                 break;
 160         case VIDIOC_S_PARM_OLD:
 161                 cmd = VIDIOC_S_PARM;
 162                 break;
 163         case VIDIOC_S_CTRL_OLD:
 164                 cmd = VIDIOC_S_CTRL;
 165                 break;
 166         case VIDIOC_G_AUDIO_OLD:
 167                 cmd = VIDIOC_G_AUDIO;
 168                 break;
 169         case VIDIOC_G_AUDOUT_OLD:
 170                 cmd = VIDIOC_G_AUDOUT;
 171                 break;
 172         case VIDIOC_CROPCAP_OLD:
 173                 cmd = VIDIOC_CROPCAP;
 174                 break;
 175         }
 176         return cmd;
 177 }
 178 #endif
 179
 180 /*
 181  * Obsolete usercopy function - Should be removed soon
 182  */
 183 int
 184 video_usercopy(struct inode *inode, struct file *file,
 185                unsigned int cmd, unsigned long arg,
 186                int (*func)(struct inode *inode, struct file *file,
 187                            unsigned int cmd, void *arg))
 188 {
 189         char    sbuf[128];
 190         void    *mbuf = NULL;
 191         void    *parg = NULL;
 192         int     err  = -EINVAL;
 193
 194 #ifdef __OLD_VIDIOC_
 195         cmd = video_fix_command(cmd);
 196 #endif
 197
 198         /*  Copy arguments into temp kernel buffer  */
 199         switch (_IOC_DIR(cmd)) {
 200         case _IOC_NONE:
 201                 parg = NULL;
 202                 break;
 203         case _IOC_READ:
 204         case _IOC_WRITE:
 205         case (_IOC_WRITE | _IOC_READ):
 206                 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
 207                         parg = sbuf;
 208                 } else {
 209                         /* too big to allocate from stack */
 210                         mbuf = kmalloc(_IOC_SIZE(cmd),GFP_KERNEL);
 211                         if (NULL == mbuf)
 212                                 return -ENOMEM;
 213                         parg = mbuf;
 214                 }
 215
 216                 err = -EFAULT;
 217                 if (_IOC_DIR(cmd) & _IOC_WRITE)
 218                         if (copy_from_user(parg, (void __user *)arg,
 219                                                         _IOC_SIZE(cmd)))
 220                                 goto out;
 221                 break;
 222         }
 223
 224         /* call driver */
 225         err = func(inode, file, cmd, parg);
 226         if (err == -ENOIOCTLCMD)
 227                 err = -EINVAL;
 228         if (err < 0)
 229                 goto out;
 230
 231         /*  Copy results into user buffer  */
 232         switch (_IOC_DIR(cmd))
 233         {
 234         case _IOC_READ:
 235         case (_IOC_WRITE | _IOC_READ):
 236                 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
 237                         err = -EFAULT;
 238                 break;
 239         }
 240
 241 out:
 242         kfree(mbuf);
 243         return err;
 244 }
 245
 246 /*
 247  * open/release helper functions -- handle exclusive opens
 248  * Should be removed soon
 249  */
 250 int video_exclusive_open(struct inode *inode, struct file *file)
 251 {
 252         struct  video_device *vfl = video_devdata(file);
 253         int retval = 0;
 254
 255         mutex_lock(&vfl->lock);
 256         if (vfl->users) {
 257                 retval = -EBUSY;
 258         } else {
 259                 vfl->users++;
 260         }
 261         mutex_unlock(&vfl->lock);
 262         return retval;
 263 }
 264
 265 int video_exclusive_release(struct inode *inode, struct file *file)
 266 {
 267         struct  video_device *vfl = video_devdata(file);
 268
 269         vfl->users--;
 270         return 0;
 271 }
 272
 273 static char *v4l2_memory_names[] = {
 274         [V4L2_MEMORY_MMAP]    = "mmap",
 275         [V4L2_MEMORY_USERPTR] = "userptr",
 276         [V4L2_MEMORY_OVERLAY] = "overlay",
 277 };
 278
 279
 280 /* FIXME: Those stuff are replicated also on v4l2-common.c */
 281 static char *v4l2_type_names_FIXME[] = {
 282         [V4L2_BUF_TYPE_VIDEO_CAPTURE]      = "video-cap",
 283         [V4L2_BUF_TYPE_VIDEO_OVERLAY]      = "video-over",
 284         [V4L2_BUF_TYPE_VIDEO_OUTPUT]       = "video-out",
 285         [V4L2_BUF_TYPE_VBI_CAPTURE]        = "vbi-cap",
 286         [V4L2_BUF_TYPE_VBI_OUTPUT]         = "vbi-out",
 287         [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT]  = "sliced-vbi-out",
 288         [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-capture",
 289         [V4L2_BUF_TYPE_PRIVATE]            = "private",
 290 };
 291
 292 static char *v4l2_field_names_FIXME[] = {
 293         [V4L2_FIELD_ANY]        = "any",
 294         [V4L2_FIELD_NONE]       = "none",
 295         [V4L2_FIELD_TOP]        = "top",
 296         [V4L2_FIELD_BOTTOM]     = "bottom",
 297         [V4L2_FIELD_INTERLACED] = "interlaced",
 298         [V4L2_FIELD_SEQ_TB]     = "seq-tb",
 299         [V4L2_FIELD_SEQ_BT]     = "seq-bt",
 300         [V4L2_FIELD_ALTERNATE]  = "alternate",
 301 };
 302
 303 #define prt_names(a,arr) (((a)>=0)&&((a)<ARRAY_SIZE(arr)))?arr[a]:"unknown"
 304
 305 static void dbgbuf(unsigned int cmd, struct video_device *vfd,
 306                                         struct v4l2_buffer *p)
 307 {
 308         struct v4l2_timecode *tc=&p->timecode;
 309
 310         dbgarg (cmd, "%02ld:%02d:%02d.%08ld index=%d, type=%s, "
 311                 "bytesused=%d, flags=0x%08d, "
 312                 "field=%0d, sequence=%d, memory=%s, offset/userptr=0x%08lx\n",
 313                         (p->timestamp.tv_sec/3600),
 314                         (int)(p->timestamp.tv_sec/60)%60,
 315                         (int)(p->timestamp.tv_sec%60),
 316                         p->timestamp.tv_usec,
 317                         p->index,
 318                         prt_names(p->type,v4l2_type_names_FIXME),
 319                         p->bytesused,p->flags,
 320                         p->field,p->sequence,
 321                         prt_names(p->memory,v4l2_memory_names),
 322                         p->m.userptr);
 323         dbgarg2 ("timecode= %02d:%02d:%02d type=%d, "
 324                 "flags=0x%08d, frames=%d, userbits=0x%08x\n",
 325                         tc->hours,tc->minutes,tc->seconds,
 326                         tc->type, tc->flags, tc->frames, (__u32) tc->userbits);
 327 }
 328
 329 static inline void dbgrect(struct video_device *vfd, char *s,
 330                                                         struct v4l2_rect *r)
 331 {
 332         dbgarg2 ("%sRect start at %dx%d, size= %dx%d\n", s, r->left, r->top,
 333                                                 r->width, r->height);
 334 };
 335
 336 static inline void v4l_print_pix_fmt (struct video_device *vfd,
 337                                                 struct v4l2_pix_format *fmt)
 338 {
 339         dbgarg2 ("width=%d, height=%d, format=0x%08x, field=%s, "
 340                 "bytesperline=%d sizeimage=%d, colorspace=%d\n",
 341                 fmt->width,fmt->height,fmt->pixelformat,
 342                 prt_names(fmt->field,v4l2_field_names_FIXME),
 343                 fmt->bytesperline,fmt->sizeimage,fmt->colorspace);
 344 };
 345
 346
 347 static int check_fmt (struct video_device *vfd, enum v4l2_buf_type type)
 348 {
 349         switch (type) {
 350         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 351                 if (vfd->vidioc_try_fmt_cap)
 352                         return (0);
 353                 break;
 354         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
 355                 if (vfd->vidioc_try_fmt_overlay)
 356                         return (0);
 357                 break;
 358         case V4L2_BUF_TYPE_VBI_CAPTURE:
 359                 if (vfd->vidioc_try_fmt_vbi)
 360                         return (0);
 361                 break;
 362         case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
 363                 if (vfd->vidioc_try_fmt_vbi_output)
 364                         return (0);
 365                 break;
 366         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 367                 if (vfd->vidioc_try_fmt_vbi_capture)
 368                         return (0);
 369                 break;
 370         case V4L2_BUF_TYPE_VIDEO_OUTPUT:
 371                 if (vfd->vidioc_try_fmt_video_output)
 372                         return (0);
 373                 break;
 374         case V4L2_BUF_TYPE_VBI_OUTPUT:
 375                 if (vfd->vidioc_try_fmt_vbi_output)
 376                         return (0);
 377                 break;
 378         case V4L2_BUF_TYPE_PRIVATE:
 379                 if (vfd->vidioc_try_fmt_type_private)
 380                         return (0);
 381                 break;
 382         }
 383         return (-EINVAL);
 384 }
 385
 386 static int __video_do_ioctl(struct inode *inode, struct file *file,
 387                 unsigned int cmd, void *arg)
 388 {
 389         struct video_device *vfd = video_devdata(file);
 390         void                 *fh = file->private_data;
 391         int                  ret = -EINVAL;
 392
 393         if ( (vfd->debug & V4L2_DEBUG_IOCTL) &&
 394                                 !(vfd->debug | V4L2_DEBUG_IOCTL_ARG)) {
 395                 v4l_print_ioctl(vfd->name, cmd);
 396         }
 397
 398         switch(cmd) {
 399         /* --- capabilities ------------------------------------------ */
 400         case VIDIOC_QUERYCAP:
 401         {
 402                 struct v4l2_capability *cap = (struct v4l2_capability*)arg;
 403                 memset(cap, 0, sizeof(*cap));
 404
 405                 if (!vfd->vidioc_querycap)
 406                         break;
 407
 408                 ret=vfd->vidioc_querycap(file, fh, cap);
 409                 if (!ret)
 410                         dbgarg (cmd, "driver=%s, card=%s, bus=%s, "
 411                                         "version=0x%08x, "
 412                                         "capabilities=0x%08x\n",
 413                                         cap->driver,cap->card,cap->bus_info,
 414                                         cap->version,
 415                                         cap->capabilities);
 416                 break;
 417         }
 418
 419         /* --- priority ------------------------------------------ */
 420         case VIDIOC_G_PRIORITY:
 421         {
 422                 enum v4l2_priority *p=arg;
 423
 424                 if (!vfd->vidioc_g_priority)
 425                         break;
 426                 ret=vfd->vidioc_g_priority(file, fh, p);
 427                 if (!ret)
 428                         dbgarg(cmd, "priority is %d\n", *p);
 429                 break;
 430         }
 431         case VIDIOC_S_PRIORITY:
 432         {
 433                 enum v4l2_priority *p=arg;
 434
 435                 if (!vfd->vidioc_s_priority)
 436                         break;
 437                 dbgarg(cmd, "setting priority to %d\n", *p);
 438                 ret=vfd->vidioc_s_priority(file, fh, *p);
 439                 break;
 440         }
 441
 442         /* --- capture ioctls ---------------------------------------- */
 443         case VIDIOC_ENUM_FMT:
 444         {
 445                 struct v4l2_fmtdesc *f = arg;
 446                 enum v4l2_buf_type type;
 447                 unsigned int index;
 448
 449                 index = f->index;
 450                 type  = f->type;
 451                 memset(f,0,sizeof(*f));
 452                 f->index = index;
 453                 f->type  = type;
 454
 455                 switch (type) {
 456                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 457                         if (vfd->vidioc_enum_fmt_cap)
 458                                 ret=vfd->vidioc_enum_fmt_cap(file, fh, f);
 459                         break;
 460                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
 461                         if (vfd->vidioc_enum_fmt_overlay)
 462                                 ret=vfd->vidioc_enum_fmt_overlay(file, fh, f);
 463                         break;
 464                 case V4L2_BUF_TYPE_VBI_CAPTURE:
 465                         if (vfd->vidioc_enum_fmt_vbi)
 466                                 ret=vfd->vidioc_enum_fmt_vbi(file, fh, f);
 467                         break;
 468                 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
 469                         if (vfd->vidioc_enum_fmt_vbi_output)
 470                                 ret=vfd->vidioc_enum_fmt_vbi_output(file,
 471                                                                 fh, f);
 472                         break;
 473                 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 474                         if (vfd->vidioc_enum_fmt_vbi_capture)
 475                                 ret=vfd->vidioc_enum_fmt_vbi_capture(file,
 476                                                                 fh, f);
 477                         break;
 478                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
 479                         if (vfd->vidioc_enum_fmt_video_output)
 480                                 ret=vfd->vidioc_enum_fmt_video_output(file,
 481                                                                 fh, f);
 482                         break;
 483                 case V4L2_BUF_TYPE_VBI_OUTPUT:
 484                         if (vfd->vidioc_enum_fmt_vbi_output)
 485                                 ret=vfd->vidioc_enum_fmt_vbi_output(file,
 486                                                                 fh, f);
 487                         break;
 488                 case V4L2_BUF_TYPE_PRIVATE:
 489                         if (vfd->vidioc_enum_fmt_type_private)
 490                                 ret=vfd->vidioc_enum_fmt_type_private(file,
 491                                                                 fh, f);
 492                         break;
 493                 }
 494                 if (!ret)
 495                         dbgarg (cmd, "index=%d, type=%d, flags=%d, "
 496                                         "description=%s,"
 497                                         " pixelformat=0x%8x\n",
 498                                         f->index, f->type, f->flags,
 499                                         f->description,
 500                                         f->pixelformat);
 501
 502                 break;
 503         }
 504         case VIDIOC_G_FMT:
 505         {
 506                 struct v4l2_format *f = (struct v4l2_format *)arg;
 507                 enum v4l2_buf_type type=f->type;
 508
 509                 memset(&f->fmt.pix,0,sizeof(f->fmt.pix));
 510                 f->type=type;
 511
 512                 /* FIXME: Should be one dump per type */
 513                 dbgarg (cmd, "type=%s\n", prt_names(type,
 514                                         v4l2_type_names_FIXME));
 515
 516                 switch (type) {
 517                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 518                         if (vfd->vidioc_g_fmt_cap)
 519                                 ret=vfd->vidioc_g_fmt_cap(file, fh, f);
 520                         if (!ret)
 521                                 v4l_print_pix_fmt(vfd,&f->fmt.pix);
 522                         break;
 523                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
 524                         if (vfd->vidioc_g_fmt_overlay)
 525                                 ret=vfd->vidioc_g_fmt_overlay(file, fh, f);
 526                         break;
 527                 case V4L2_BUF_TYPE_VBI_CAPTURE:
 528                         if (vfd->vidioc_g_fmt_vbi)
 529                                 ret=vfd->vidioc_g_fmt_vbi(file, fh, f);
 530                         break;
 531                 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
 532                         if (vfd->vidioc_g_fmt_vbi_output)
 533                                 ret=vfd->vidioc_g_fmt_vbi_output(file, fh, f);
 534                         break;
 535                 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 536                         if (vfd->vidioc_g_fmt_vbi_capture)
 537                                 ret=vfd->vidioc_g_fmt_vbi_capture(file, fh, f);
 538                         break;
 539                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
 540                         if (vfd->vidioc_g_fmt_video_output)
 541                                 ret=vfd->vidioc_g_fmt_video_output(file,
 542                                                                 fh, f);
 543                         break;
 544                 case V4L2_BUF_TYPE_VBI_OUTPUT:
 545                         if (vfd->vidioc_g_fmt_vbi_output)
 546                                 ret=vfd->vidioc_g_fmt_vbi_output(file, fh, f);
 547                         break;
 548                 case V4L2_BUF_TYPE_PRIVATE:
 549                         if (vfd->vidioc_g_fmt_type_private)
 550                                 ret=vfd->vidioc_g_fmt_type_private(file,
 551                                                                 fh, f);
 552                         break;
 553                 }
 554
 555                 break;
 556         }
 557         case VIDIOC_S_FMT:
 558         {
 559                 struct v4l2_format *f = (struct v4l2_format *)arg;
 560
 561                 /* FIXME: Should be one dump per type */
 562                 dbgarg (cmd, "type=%s\n", prt_names(f->type,
 563                                         v4l2_type_names_FIXME));
 564
 565                 switch (f->type) {
 566                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 567                         v4l_print_pix_fmt(vfd,&f->fmt.pix);
 568                         if (vfd->vidioc_s_fmt_cap)
 569                                 ret=vfd->vidioc_s_fmt_cap(file, fh, f);
 570                         break;
 571                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
 572                         if (vfd->vidioc_s_fmt_overlay)
 573                                 ret=vfd->vidioc_s_fmt_overlay(file, fh, f);
 574                         break;
 575                 case V4L2_BUF_TYPE_VBI_CAPTURE:
 576                         if (vfd->vidioc_s_fmt_vbi)
 577                                 ret=vfd->vidioc_s_fmt_vbi(file, fh, f);
 578                         break;
 579                 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
 580                         if (vfd->vidioc_s_fmt_vbi_output)
 581                                 ret=vfd->vidioc_s_fmt_vbi_output(file, fh, f);
 582                         break;
 583                 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 584                         if (vfd->vidioc_s_fmt_vbi_capture)
 585                                 ret=vfd->vidioc_s_fmt_vbi_capture(file, fh, f);
 586                         break;
 587                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
 588                         if (vfd->vidioc_s_fmt_video_output)
 589                                 ret=vfd->vidioc_s_fmt_video_output(file,
 590                                                                 fh, f);
 591                         break;
 592                 case V4L2_BUF_TYPE_VBI_OUTPUT:
 593                         if (vfd->vidioc_s_fmt_vbi_output)
 594                                 ret=vfd->vidioc_s_fmt_vbi_output(file,
 595                                                                 fh, f);
 596                         break;
 597                 case V4L2_BUF_TYPE_PRIVATE:
 598                         if (vfd->vidioc_s_fmt_type_private)
 599                                 ret=vfd->vidioc_s_fmt_type_private(file,
 600                                                                 fh, f);
 601                         break;
 602                 }
 603                 break;
 604         }
 605         case VIDIOC_TRY_FMT:
 606         {
 607                 struct v4l2_format *f = (struct v4l2_format *)arg;
 608
 609                 /* FIXME: Should be one dump per type */
 610                 dbgarg (cmd, "type=%s\n", prt_names(f->type,
 611                                                 v4l2_type_names_FIXME));
 612                 switch (f->type) {
 613                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 614                         if (vfd->vidioc_try_fmt_cap)
 615                                 ret=vfd->vidioc_try_fmt_cap(file, fh, f);
 616                         if (!ret)
 617                                 v4l_print_pix_fmt(vfd,&f->fmt.pix);
 618                         break;
 619                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
 620                         if (vfd->vidioc_try_fmt_overlay)
 621                                 ret=vfd->vidioc_try_fmt_overlay(file, fh, f);
 622                         break;
 623                 case V4L2_BUF_TYPE_VBI_CAPTURE:
 624                         if (vfd->vidioc_try_fmt_vbi)
 625                                 ret=vfd->vidioc_try_fmt_vbi(file, fh, f);
 626                         break;
 627                 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
 628                         if (vfd->vidioc_try_fmt_vbi_output)
 629                                 ret=vfd->vidioc_try_fmt_vbi_output(file,
 630                                                                 fh, f);
 631                         break;
 632                 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 633                         if (vfd->vidioc_try_fmt_vbi_capture)
 634                                 ret=vfd->vidioc_try_fmt_vbi_capture(file,
 635                                                                 fh, f);
 636                         break;
 637                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
 638                         if (vfd->vidioc_try_fmt_video_output)
 639                                 ret=vfd->vidioc_try_fmt_video_output(file,
 640                                                                 fh, f);
 641                         break;
 642                 case V4L2_BUF_TYPE_VBI_OUTPUT:
 643                         if (vfd->vidioc_try_fmt_vbi_output)
 644                                 ret=vfd->vidioc_try_fmt_vbi_output(file,
 645                                                                 fh, f);
 646                         break;
 647                 case V4L2_BUF_TYPE_PRIVATE:
 648                         if (vfd->vidioc_try_fmt_type_private)
 649                                 ret=vfd->vidioc_try_fmt_type_private(file,
 650                                                                 fh, f);
 651                         break;
 652                 }
 653
 654                 break;
 655         }
 656         /* FIXME: Those buf reqs could be handled here,
 657            with some changes on videobuf to allow its header to be included at
 658            videodev2.h or being merged at videodev2.
 659          */
 660         case VIDIOC_REQBUFS:
 661         {
 662                 struct v4l2_requestbuffers *p=arg;
 663
 664                 if (!vfd->vidioc_reqbufs)
 665                         break;
 666                 ret = check_fmt (vfd, p->type);
 667                 if (ret)
 668                         break;
 669
 670                 ret=vfd->vidioc_reqbufs(file, fh, p);
 671                 dbgarg (cmd, "count=%d, type=%s, memory=%s\n",
 672                                 p->count,
 673                                 prt_names(p->type,v4l2_type_names_FIXME),
 674                                 prt_names(p->memory,v4l2_memory_names));
 675                 break;
 676         }
 677         case VIDIOC_QUERYBUF:
 678         {
 679                 struct v4l2_buffer *p=arg;
 680
 681                 if (!vfd->vidioc_querybuf)
 682                         break;
 683                 ret = check_fmt (vfd, p->type);
 684                 if (ret)
 685                         break;
 686
 687                 ret=vfd->vidioc_querybuf(file, fh, p);
 688                 if (!ret)
 689                         dbgbuf(cmd,vfd,p);
 690                 break;
 691         }
 692         case VIDIOC_QBUF:
 693         {
 694                 struct v4l2_buffer *p=arg;
 695
 696                 if (!vfd->vidioc_qbuf)
 697                         break;
 698                 ret = check_fmt (vfd, p->type);
 699                 if (ret)
 700                         break;
 701
 702                 ret=vfd->vidioc_qbuf(file, fh, p);
 703                 if (!ret)
 704                         dbgbuf(cmd,vfd,p);
 705                 break;
 706         }
 707         case VIDIOC_DQBUF:
 708         {
 709                 struct v4l2_buffer *p=arg;
 710                 if (!vfd->vidioc_qbuf)
 711                         break;
 712                 ret = check_fmt (vfd, p->type);
 713                 if (ret)
 714                         break;
 715
 716                 ret=vfd->vidioc_qbuf(file, fh, p);
 717                 if (!ret)
 718                         dbgbuf(cmd,vfd,p);
 719                 break;
 720         }
 721         case VIDIOC_OVERLAY:
 722         {
 723                 int *i = arg;
 724
 725                 if (!vfd->vidioc_overlay)
 726                         break;
 727                 dbgarg (cmd, "value=%d\n",*i);
 728                 ret=vfd->vidioc_overlay(file, fh, *i);
 729                 break;
 730         }
 731 #ifdef HAVE_V4L1
 732         /* --- streaming capture ------------------------------------- */
 733         case VIDIOCGMBUF:
 734         {
 735                 struct video_mbuf *p=arg;
 736
 737                 memset(&p,0,sizeof(p));
 738
 739                 if (!vfd->vidiocgmbuf)
 740                         break;
 741                 ret=vfd->vidiocgmbuf(file, fh, p);
 742                 if (!ret)
 743                         dbgarg (cmd, "size=%d, frames=%d, offsets=0x%08lx\n",
 744                                                 p->size, p->frames,
 745                                                 (unsigned long)p->offsets);
 746                 break;
 747         }
 748 #endif
 749         case VIDIOC_G_FBUF:
 750         {
 751                 struct v4l2_framebuffer *p=arg;
 752                 if (!vfd->vidioc_g_fbuf)
 753                         break;
 754                 ret=vfd->vidioc_g_fbuf(file, fh, arg);
 755                 if (!ret) {
 756                         dbgarg (cmd, "capability=%d, flags=%d, base=0x%08lx\n",
 757                                         p->capability,p->flags,
 758                                         (unsigned long)p->base);
 759                         v4l_print_pix_fmt (vfd, &p->fmt);
 760                 }
 761                 break;
 762         }
 763         case VIDIOC_S_FBUF:
 764         {
 765                 struct v4l2_framebuffer *p=arg;
 766                 if (!vfd->vidioc_s_fbuf)
 767                         break;
 768
 769                 dbgarg (cmd, "capability=%d, flags=%d, base=0x%08lx\n",
 770                                 p->capability,p->flags,(unsigned long)p->base);
 771                 v4l_print_pix_fmt (vfd, &p->fmt);
 772                 ret=vfd->vidioc_s_fbuf(file, fh, arg);
 773
 774                 break;
 775         }
 776         case VIDIOC_STREAMON:
 777         {
 778                 enum v4l2_buf_type i = *(int *)arg;
 779                 if (!vfd->vidioc_streamon)
 780                         break;
 781                 dbgarg (cmd, "type=%s\n", prt_names(i,v4l2_type_names_FIXME));
 782                 ret=vfd->vidioc_streamon(file, fh,i);
 783                 break;
 784         }
 785         case VIDIOC_STREAMOFF:
 786         {
 787                 enum v4l2_buf_type i = *(int *)arg;
 788
 789                 if (!vfd->vidioc_streamoff)
 790                         break;
 791                 dbgarg (cmd, "type=%s\n", prt_names(i,v4l2_type_names_FIXME));
 792                 ret=vfd->vidioc_streamoff(file, fh, i);
 793                 break;
 794         }
 795         /* ---------- tv norms ---------- */
 796         case VIDIOC_ENUMSTD:
 797         {
 798                 struct v4l2_standard *p = arg;
 799                 unsigned int index = p->index;
 800
 801                 if (!vfd->tvnormsize) {
 802                         printk (KERN_WARNING "%s: no TV norms defined!\n",
 803                                                 vfd->name);
 804                         break;
 805                 }
 806
 807                 if (index<=0 || index >= vfd->tvnormsize) {
 808                         ret=-EINVAL;
 809                         break;
 810                 }
 811                 v4l2_video_std_construct(p, vfd->tvnorms[p->index].id,
 812                                          vfd->tvnorms[p->index].name);
 813                 p->index = index;
 814
 815                 dbgarg (cmd, "index=%d, id=%Ld, name=%s, fps=%d/%d, "
 816                                 "framelines=%d\n", p->index,
 817                                 (unsigned long long)p->id, p->name,
 818                                 p->frameperiod.numerator,
 819                                 p->frameperiod.denominator,
 820                                 p->framelines);
 821
 822                 ret=0;
 823                 break;
 824         }
 825         case VIDIOC_G_STD:
 826         {
 827                 v4l2_std_id *id = arg;
 828
 829                 *id = vfd->current_norm;
 830
 831                 dbgarg (cmd, "value=%Lu\n", (long long unsigned) *id);
 832
 833                 ret=0;
 834                 break;
 835         }
 836         case VIDIOC_S_STD:
 837         {
 838                 v4l2_std_id *id = arg;
 839                 unsigned int i;
 840
 841                 if (!vfd->tvnormsize) {
 842                         printk (KERN_WARNING "%s: no TV norms defined!\n",
 843                                                 vfd->name);
 844                         break;
 845                 }
 846
 847                 dbgarg (cmd, "value=%Lu\n", (long long unsigned) *id);
 848
 849                 /* First search for exact match */
 850                 for (i = 0; i < vfd->tvnormsize; i++)
 851                         if (*id == vfd->tvnorms[i].id)
 852                                 break;
 853                 /* Then for a generic video std that contains desired std */
 854                 if (i == vfd->tvnormsize)
 855                         for (i = 0; i < vfd->tvnormsize; i++)
 856                                 if (*id & vfd->tvnorms[i].id)
 857                                         break;
 858                 if (i == vfd->tvnormsize) {
 859                         break;
 860                 }
 861
 862                 /* Calls the specific handler */
 863                 if (vfd->vidioc_s_std)
 864                         ret=vfd->vidioc_s_std(file, fh, i);
 865                 else
 866                         ret=-EINVAL;
 867
 868                 /* Updates standard information */
 869                 if (!ret)
 870                         vfd->current_norm=*id;
 871
 872                 break;
 873         }
 874         case VIDIOC_QUERYSTD:
 875         {
 876                 v4l2_std_id *p=arg;
 877
 878                 if (!vfd->vidioc_querystd)
 879                         break;
 880                 ret=vfd->vidioc_querystd(file, fh, arg);
 881                 if (!ret)
 882                         dbgarg (cmd, "detected std=%Lu\n",
 883                                                 (unsigned long long)*p);
 884                 break;
 885         }
 886         /* ------ input switching ---------- */
 887         /* FIXME: Inputs can be handled inside videodev2 */
 888         case VIDIOC_ENUMINPUT:
 889         {
 890                 struct v4l2_input *p=arg;
 891                 int i=p->index;
 892
 893                 if (!vfd->vidioc_enum_input)
 894                         break;
 895                 memset(p, 0, sizeof(*p));
 896                 p->index=i;
 897
 898                 ret=vfd->vidioc_enum_input(file, fh, p);
 899                 if (!ret)
 900                         dbgarg (cmd, "index=%d, name=%s, type=%d, "
 901                                         "audioset=%d, "
 902                                         "tuner=%d, std=%Ld, status=%d\n",
 903                                         p->index,p->name,p->type,p->audioset,
 904                                         p->tuner,
 905                                         (unsigned long long)p->std,
 906                                         p->status);
 907                 break;
 908         }
 909         case VIDIOC_G_INPUT:
 910         {
 911                 unsigned int *i = arg;
 912
 913                 if (!vfd->vidioc_g_input)
 914                         break;
 915                 ret=vfd->vidioc_g_input(file, fh, i);
 916                 if (!ret)
 917                         dbgarg (cmd, "value=%d\n",*i);
 918                 break;
 919         }
 920         case VIDIOC_S_INPUT:
 921         {
 922                 unsigned int *i = arg;
 923
 924                 if (!vfd->vidioc_s_input)
 925                         break;
 926                 dbgarg (cmd, "value=%d\n",*i);
 927                 ret=vfd->vidioc_s_input(file, fh, *i);
 928                 break;
 929         }
 930
 931         /* ------ output switching ---------- */
 932         case VIDIOC_G_OUTPUT:
 933         {
 934                 unsigned int *i = arg;
 935
 936                 if (!vfd->vidioc_g_output)
 937                         break;
 938                 ret=vfd->vidioc_g_output(file, fh, i);
 939                 if (!ret)
 940                         dbgarg (cmd, "value=%d\n",*i);
 941                 break;
 942         }
 943         case VIDIOC_S_OUTPUT:
 944         {
 945                 unsigned int *i = arg;
 946
 947                 if (!vfd->vidioc_s_output)
 948                         break;
 949                 dbgarg (cmd, "value=%d\n",*i);
 950                 ret=vfd->vidioc_s_output(file, fh, *i);
 951                 break;
 952         }
 953
 954         /* --- controls ---------------------------------------------- */
 955         case VIDIOC_QUERYCTRL:
 956         {
 957                 struct v4l2_queryctrl *p=arg;
 958
 959                 if (!vfd->vidioc_queryctrl)
 960                         break;
 961                 ret=vfd->vidioc_queryctrl(file, fh, p);
 962
 963                 if (!ret)
 964                         dbgarg (cmd, "id=%d, type=%d, name=%s, "
 965                                         "min/max=%d/%d,"
 966                                         " step=%d, default=%d, flags=0x%08x\n",
 967                                         p->id,p->type,p->name,p->minimum,
 968                                         p->maximum,p->step,p->default_value,
 969                                         p->flags);
 970                 break;
 971         }
 972         case VIDIOC_G_CTRL:
 973         {
 974                 struct v4l2_control *p = arg;
 975
 976                 if (!vfd->vidioc_g_ctrl)
 977                         break;
 978                 dbgarg(cmd, "Enum for index=%d\n", p->id);
 979
 980                 ret=vfd->vidioc_g_ctrl(file, fh, p);
 981                 if (!ret)
 982                         dbgarg2 ( "id=%d, value=%d\n", p->id, p->value);
 983                 break;
 984         }
 985         case VIDIOC_S_CTRL:
 986         {
 987                 struct v4l2_control *p = arg;
 988
 989                 if (!vfd->vidioc_s_ctrl)
 990                         break;
 991                 dbgarg (cmd, "id=%d, value=%d\n", p->id, p->value);
 992
 993                 ret=vfd->vidioc_s_ctrl(file, fh, p);
 994                 break;
 995         }
 996         case VIDIOC_QUERYMENU:
 997         {
 998                 struct v4l2_querymenu *p=arg;
 999                 if (!vfd->vidioc_querymenu)
1000                         break;
1001                 ret=vfd->vidioc_querymenu(file, fh, p);
1002                 if (!ret)
1003                         dbgarg (cmd, "id=%d, index=%d, name=%s\n",
1004                                                 p->id,p->index,p->name);
1005                 break;
1006         }
1007         /* --- audio ---------------------------------------------- */
1008         case VIDIOC_ENUMAUDIO:
1009         {
1010                 struct v4l2_audio *p=arg;
1011
1012                 if (!vfd->vidioc_enumaudio)
1013                         break;
1014                 dbgarg(cmd, "Enum for index=%d\n", p->index);
1015                 ret=vfd->vidioc_enumaudio(file, fh, p);
1016                 if (!ret)
1017                         dbgarg2("index=%d, name=%s, capability=%d, "
1018                                         "mode=%d\n",p->index,p->name,
1019                                         p->capability, p->mode);
1020                 break;
1021         }
1022         case VIDIOC_G_AUDIO:
1023         {
1024                 struct v4l2_audio *p=arg;
1025
1026                 if (!vfd->vidioc_g_audio)
1027                         break;
1028                 dbgarg(cmd, "Get for index=%d\n", p->index);
1029                 ret=vfd->vidioc_g_audio(file, fh, p);
1030                 if (!ret)
1031                         dbgarg2("index=%d, name=%s, capability=%d, "
1032                                         "mode=%d\n",p->index,
1033                                         p->name,p->capability, p->mode);
1034                 break;
1035         }
1036         case VIDIOC_S_AUDIO:
1037         {
1038                 struct v4l2_audio *p=arg;
1039
1040                 if (!vfd->vidioc_s_audio)
1041                         break;
1042                 dbgarg(cmd, "index=%d, name=%s, capability=%d, "
1043                                         "mode=%d\n", p->index, p->name,
1044                                         p->capability, p->mode);
1045                 ret=vfd->vidioc_s_audio(file, fh, p);
1046                 break;
1047         }
1048         case VIDIOC_ENUMAUDOUT:
1049         {
1050                 struct v4l2_audioout *p=arg;
1051
1052                 if (!vfd->vidioc_enumaudout)
1053                         break;
1054                 dbgarg(cmd, "Enum for index=%d\n", p->index);
1055                 ret=vfd->vidioc_enumaudout(file, fh, p);
1056                 if (!ret)
1057                         dbgarg2("index=%d, name=%s, capability=%d, "
1058                                         "mode=%d\n", p->index, p->name,
1059                                         p->capability,p->mode);
1060                 break;
1061         }
1062         case VIDIOC_G_AUDOUT:
1063         {
1064                 struct v4l2_audioout *p=arg;
1065
1066                 if (!vfd->vidioc_g_audout)
1067                         break;
1068                 dbgarg(cmd, "Enum for index=%d\n", p->index);
1069                 ret=vfd->vidioc_g_audout(file, fh, p);
1070                 if (!ret)
1071                         dbgarg2("index=%d, name=%s, capability=%d, "
1072                                         "mode=%d\n", p->index, p->name,
1073                                         p->capability,p->mode);
1074                 break;
1075         }
1076         case VIDIOC_S_AUDOUT:
1077         {
1078                 struct v4l2_audioout *p=arg;
1079
1080                 if (!vfd->vidioc_s_audout)
1081                         break;
1082                 dbgarg(cmd, "index=%d, name=%s, capability=%d, "
1083                                         "mode=%d\n", p->index, p->name,
1084                                         p->capability,p->mode);
1085
1086                 ret=vfd->vidioc_s_audout(file, fh, p);
1087                 break;
1088         }
1089         case VIDIOC_G_MODULATOR:
1090         {
1091                 struct v4l2_modulator *p=arg;
1092                 if (!vfd->vidioc_g_modulator)
1093                         break;
1094                 ret=vfd->vidioc_g_modulator(file, fh, p);
1095                 if (!ret)
1096                         dbgarg(cmd, "index=%d, name=%s, "
1097                                         "capability=%d, rangelow=%d,"
1098                                         " rangehigh=%d, txsubchans=%d\n",
1099                                         p->index, p->name,p->capability,
1100                                         p->rangelow, p->rangehigh,
1101                                         p->txsubchans);
1102                 break;
1103         }
1104         case VIDIOC_S_MODULATOR:
1105         {
1106                 struct v4l2_modulator *p=arg;
1107                 if (!vfd->vidioc_s_modulator)
1108                         break;
1109                 dbgarg(cmd, "index=%d, name=%s, capability=%d, "
1110                                 "rangelow=%d, rangehigh=%d, txsubchans=%d\n",
1111                                 p->index, p->name,p->capability,p->rangelow,
1112                                 p->rangehigh,p->txsubchans);
1113                         ret=vfd->vidioc_s_modulator(file, fh, p);
1114                 break;
1115         }
1116         case VIDIOC_G_CROP:
1117         {
1118                 struct v4l2_crop *p=arg;
1119                 if (!vfd->vidioc_g_crop)
1120                         break;
1121                 ret=vfd->vidioc_g_crop(file, fh, p);
1122                 if (!ret) {
1123                         dbgarg(cmd, "type=%d\n", p->type);
1124                         dbgrect(vfd, "", &p->c);
1125                 }
1126                 break;
1127         }
1128         case VIDIOC_S_CROP:
1129         {
1130                 struct v4l2_crop *p=arg;
1131                 if (!vfd->vidioc_s_crop)
1132                         break;
1133                 dbgarg(cmd, "type=%d\n", p->type);
1134                 dbgrect(vfd, "", &p->c);
1135                 ret=vfd->vidioc_s_crop(file, fh, p);
1136                 break;
1137         }
1138         case VIDIOC_CROPCAP:
1139         {
1140                 struct v4l2_cropcap *p=arg;
1141                 /*FIXME: Should also show v4l2_fract pixelaspect */
1142                 if (!vfd->vidioc_cropcap)
1143                         break;
1144                 dbgarg(cmd, "type=%d\n", p->type);
1145                 dbgrect(vfd, "bounds ", &p->bounds);
1146                 dbgrect(vfd, "defrect ", &p->defrect);
1147                 ret=vfd->vidioc_cropcap(file, fh, p);
1148                 break;
1149         }
1150         case VIDIOC_G_MPEGCOMP:
1151         {
1152                 struct v4l2_mpeg_compression *p=arg;
1153                 /*FIXME: Several fields not shown */
1154                 if (!vfd->vidioc_g_mpegcomp)
1155                         break;
1156                 ret=vfd->vidioc_g_mpegcomp(file, fh, p);
1157                 if (!ret)
1158                         dbgarg (cmd, "ts_pid_pmt=%d, ts_pid_audio=%d,"
1159                                         " ts_pid_video=%d, ts_pid_pcr=%d, "
1160                                         "ps_size=%d, au_sample_rate=%d, "
1161                                         "au_pesid=%c, vi_frame_rate=%d, "
1162                                         "vi_frames_per_gop=%d, "
1163                                         "vi_bframes_count=%d, vi_pesid=%c\n",
1164                                         p->ts_pid_pmt,p->ts_pid_audio,
1165                                         p->ts_pid_video,p->ts_pid_pcr,
1166                                         p->ps_size, p->au_sample_rate,
1167                                         p->au_pesid, p->vi_frame_rate,
1168                                         p->vi_frames_per_gop,
1169                                         p->vi_bframes_count, p->vi_pesid);
1170                 break;
1171         }
1172         case VIDIOC_S_MPEGCOMP:
1173         {
1174                 struct v4l2_mpeg_compression *p=arg;
1175                 /*FIXME: Several fields not shown */
1176                 if (!vfd->vidioc_s_mpegcomp)
1177                         break;
1178                 dbgarg (cmd, "ts_pid_pmt=%d, ts_pid_audio=%d, "
1179                                 "ts_pid_video=%d, ts_pid_pcr=%d, ps_size=%d, "
1180                                 "au_sample_rate=%d, au_pesid=%c, "
1181                                 "vi_frame_rate=%d, vi_frames_per_gop=%d, "
1182                                 "vi_bframes_count=%d, vi_pesid=%c\n",
1183                                 p->ts_pid_pmt,p->ts_pid_audio, p->ts_pid_video,
1184                                 p->ts_pid_pcr, p->ps_size, p->au_sample_rate,
1185                                 p->au_pesid, p->vi_frame_rate,
1186                                 p->vi_frames_per_gop, p->vi_bframes_count,
1187                                 p->vi_pesid);
1188                 ret=vfd->vidioc_s_mpegcomp(file, fh, p);
1189                 break;
1190         }
1191         case VIDIOC_G_JPEGCOMP:
1192         {
1193                 struct v4l2_jpegcompression *p=arg;
1194                 if (!vfd->vidioc_g_jpegcomp)
1195                         break;
1196                 ret=vfd->vidioc_g_jpegcomp(file, fh, p);
1197                 if (!ret)
1198                         dbgarg (cmd, "quality=%d, APPn=%d, "
1199                                                 "APP_len=%d, COM_len=%d, "
1200                                                 "jpeg_markers=%d\n",
1201                                                 p->quality,p->APPn,p->APP_len,
1202                                                 p->COM_len,p->jpeg_markers);
1203                 break;
1204         }
1205         case VIDIOC_S_JPEGCOMP:
1206         {
1207                 struct v4l2_jpegcompression *p=arg;
1208                 if (!vfd->vidioc_g_jpegcomp)
1209                         break;
1210                 dbgarg (cmd, "quality=%d, APPn=%d, APP_len=%d, "
1211                                         "COM_len=%d, jpeg_markers=%d\n",
1212                                         p->quality,p->APPn,p->APP_len,
1213                                         p->COM_len,p->jpeg_markers);
1214                         ret=vfd->vidioc_s_jpegcomp(file, fh, p);
1215                 break;
1216         }
1217         case VIDIOC_G_PARM:
1218         {
1219                 struct v4l2_streamparm *p=arg;
1220                 if (!vfd->vidioc_g_parm)
1221                         break;
1222                 ret=vfd->vidioc_g_parm(file, fh, p);
1223                 dbgarg (cmd, "type=%d\n", p->type);
1224                 break;
1225         }
1226         case VIDIOC_S_PARM:
1227         {
1228                 struct v4l2_streamparm *p=arg;
1229                 if (!vfd->vidioc_s_parm)
1230                         break;
1231                 dbgarg (cmd, "type=%d\n", p->type);
1232                 ret=vfd->vidioc_s_parm(file, fh, p);
1233                 break;
1234         }
1235         case VIDIOC_G_TUNER:
1236         {
1237                 struct v4l2_tuner *p=arg;
1238                 if (!vfd->vidioc_g_tuner)
1239                         break;
1240                 ret=vfd->vidioc_g_tuner(file, fh, p);
1241                 if (!ret)
1242                         dbgarg (cmd, "index=%d, name=%s, type=%d, "
1243                                         "capability=%d, rangelow=%d, "
1244                                         "rangehigh=%d, signal=%d, afc=%d, "
1245                                         "rxsubchans=%d, audmode=%d\n",
1246                                         p->index, p->name, p->type,
1247                                         p->capability, p->rangelow,
1248                                         p->rangehigh, p->rxsubchans,
1249                                         p->audmode, p->signal, p->afc);
1250                 break;
1251         }
1252         case VIDIOC_S_TUNER:
1253         {
1254                 struct v4l2_tuner *p=arg;
1255                 if (!vfd->vidioc_s_tuner)
1256                         break;
1257                 dbgarg (cmd, "index=%d, name=%s, type=%d, "
1258                                 "capability=%d, rangelow=%d, rangehigh=%d, "
1259                                 "signal=%d, afc=%d, rxsubchans=%d, "
1260                                 "audmode=%d\n",p->index, p->name, p->type,
1261                                 p->capability, p->rangelow,p->rangehigh,
1262                                 p->rxsubchans, p->audmode, p->signal,
1263                                 p->afc);
1264                 ret=vfd->vidioc_s_tuner(file, fh, p);
1265                 break;
1266         }
1267         case VIDIOC_G_FREQUENCY:
1268         {
1269                 struct v4l2_frequency *p=arg;
1270                 if (!vfd->vidioc_g_frequency)
1271                         break;
1272                 ret=vfd->vidioc_g_frequency(file, fh, p);
1273                 if (!ret)
1274                         dbgarg (cmd, "tuner=%d, type=%d, frequency=%d\n",
1275                                                 p->tuner,p->type,p->frequency);
1276                 break;
1277         }
1278         case VIDIOC_S_FREQUENCY:
1279         {
1280                 struct v4l2_frequency *p=arg;
1281                 if (!vfd->vidioc_s_frequency)
1282                         break;
1283                 dbgarg (cmd, "tuner=%d, type=%d, frequency=%d\n",
1284                                 p->tuner,p->type,p->frequency);
1285                 ret=vfd->vidioc_s_frequency(file, fh, p);
1286                 break;
1287         }
1288         case VIDIOC_G_SLICED_VBI_CAP:
1289         {
1290                 struct v4l2_sliced_vbi_cap *p=arg;
1291                 if (!vfd->vidioc_g_sliced_vbi_cap)
1292                         break;
1293                 ret=vfd->vidioc_g_sliced_vbi_cap(file, fh, p);
1294                 if (!ret)
1295                         dbgarg (cmd, "service_set=%d\n", p->service_set);
1296                 break;
1297         }
1298         case VIDIOC_LOG_STATUS:
1299         {
1300                 if (!vfd->vidioc_log_status)
1301                         break;
1302                 ret=vfd->vidioc_log_status(file, fh);
1303                 break;
1304         }
1305
1306         /* --- Others --------------------------------------------- */
1307
1308         default:
1309                 ret=v4l_compat_translate_ioctl(inode,file,cmd,arg,__video_do_ioctl);
1310         }
1311
1312         if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) {
1313                 if (ret<0) {
1314                         printk ("%s: err:\n", vfd->name);
1315                         v4l_print_ioctl(vfd->name, cmd);
1316                 }
1317         }
1318
1319         return ret;
1320 }
1321
1322 int video_ioctl2 (struct inode *inode, struct file *file,
1323                unsigned int cmd, unsigned long arg)
1324 {
1325         char    sbuf[128];
1326         void    *mbuf = NULL;
1327         void    *parg = NULL;
1328         int     err  = -EINVAL;
1329
1330 #ifdef __OLD_VIDIOC_
1331         cmd = video_fix_command(cmd);
1332 #endif
1333
1334         /*  Copy arguments into temp kernel buffer  */
1335         switch (_IOC_DIR(cmd)) {
1336         case _IOC_NONE:
1337                 parg = NULL;
1338                 break;
1339         case _IOC_READ:
1340         case _IOC_WRITE:
1341         case (_IOC_WRITE | _IOC_READ):
1342                 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
1343                         parg = sbuf;
1344                 } else {
1345                         /* too big to allocate from stack */
1346                         mbuf = kmalloc(_IOC_SIZE(cmd),GFP_KERNEL);
1347                         if (NULL == mbuf)
1348                                 return -ENOMEM;
1349                         parg = mbuf;
1350                 }
1351
1352                 err = -EFAULT;
1353                 if (_IOC_DIR(cmd) & _IOC_WRITE)
1354                         if (copy_from_user(parg, (void __user *)arg, _IOC_SIZE(cmd)))
1355                                 goto out;
1356                 break;
1357         }
1358
1359         /* Handles IOCTL */
1360         err = __video_do_ioctl(inode, file, cmd, parg);
1361         if (err == -ENOIOCTLCMD)
1362                 err = -EINVAL;
1363         if (err < 0)
1364                 goto out;
1365
1366         /*  Copy results into user buffer  */
1367         switch (_IOC_DIR(cmd))
1368         {
1369         case _IOC_READ:
1370         case (_IOC_WRITE | _IOC_READ):
1371                 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
1372                         err = -EFAULT;
1373                 break;
1374         }
1375
1376 out:
1377         kfree(mbuf);
1378         return err;
1379 }
1380
1381
1382 static struct file_operations video_fops;
1383
1384 /**
1385  *      video_register_device - register video4linux devices
1386  *      @vfd:  video device structure we want to register
1387  *      @type: type of device to register
1388  *      @nr:   which device number (0 == /dev/video0, 1 == /dev/video1, ...
1389  *             -1 == first free)
1390  *
1391  *      The registration code assigns minor numbers based on the type
1392  *      requested. -ENFILE is returned in all the device slots for this
1393  *      category are full. If not then the minor field is set and the
1394  *      driver initialize function is called (if non %NULL).
1395  *
1396  *      Zero is returned on success.
1397  *
1398  *      Valid types are
1399  *
1400  *      %VFL_TYPE_GRABBER - A frame grabber
1401  *
1402  *      %VFL_TYPE_VTX - A teletext device
1403  *
1404  *      %VFL_TYPE_VBI - Vertical blank data (undecoded)
1405  *
1406  *      %VFL_TYPE_RADIO - A radio card
1407  */
1408
1409 int video_register_device(struct video_device *vfd, int type, int nr)
1410 {
1411         int i=0;
1412         int base;
1413         int end;
1414         char *name_base;
1415
1416         switch(type)
1417         {
1418                 case VFL_TYPE_GRABBER:
1419                         base=MINOR_VFL_TYPE_GRABBER_MIN;
1420                         end=MINOR_VFL_TYPE_GRABBER_MAX+1;
1421                         name_base = "video";
1422                         break;
1423                 case VFL_TYPE_VTX:
1424                         base=MINOR_VFL_TYPE_VTX_MIN;
1425                         end=MINOR_VFL_TYPE_VTX_MAX+1;
1426                         name_base = "vtx";
1427                         break;
1428                 case VFL_TYPE_VBI:
1429                         base=MINOR_VFL_TYPE_VBI_MIN;
1430                         end=MINOR_VFL_TYPE_VBI_MAX+1;
1431                         name_base = "vbi";
1432                         break;
1433                 case VFL_TYPE_RADIO:
1434                         base=MINOR_VFL_TYPE_RADIO_MIN;
1435                         end=MINOR_VFL_TYPE_RADIO_MAX+1;
1436                         name_base = "radio";
1437                         break;
1438                 default:
1439                         return -1;
1440         }
1441
1442         /* pick a minor number */
1443         mutex_lock(&videodev_lock);
1444         if (nr >= 0  &&  nr < end-base) {
1445                 /* use the one the driver asked for */
1446                 i = base+nr;
1447                 if (NULL != video_device[i]) {
1448                         mutex_unlock(&videodev_lock);
1449                         return -ENFILE;
1450                 }
1451         } else {
1452                 /* use first free */
1453                 for(i=base;i<end;i++)
1454                         if (NULL == video_device[i])
1455                                 break;
1456                 if (i == end) {
1457                         mutex_unlock(&videodev_lock);
1458                         return -ENFILE;
1459                 }
1460         }
1461         video_device[i]=vfd;
1462         vfd->minor=i;
1463         mutex_unlock(&videodev_lock);
1464
1465         sprintf(vfd->devfs_name, "v4l/%s%d", name_base, i - base);
1466         devfs_mk_cdev(MKDEV(VIDEO_MAJOR, vfd->minor),
1467                         S_IFCHR | S_IRUSR | S_IWUSR, vfd->devfs_name);
1468         mutex_init(&vfd->lock);
1469
1470         /* sysfs class */
1471         memset(&vfd->class_dev, 0x00, sizeof(vfd->class_dev));
1472         if (vfd->dev)
1473                 vfd->class_dev.dev = vfd->dev;
1474         vfd->class_dev.class       = &video_class;
1475         vfd->class_dev.devt        = MKDEV(VIDEO_MAJOR, vfd->minor);
1476         strlcpy(vfd->class_dev.class_id, vfd->devfs_name + 4, BUS_ID_SIZE);
1477         class_device_register(&vfd->class_dev);
1478         class_device_create_file(&vfd->class_dev,
1479                                 &class_device_attr_name);
1480
1481 #if 1
1482         /* needed until all drivers are fixed */
1483         if (!vfd->release)
1484                 printk(KERN_WARNING "videodev: \"%s\" has no release callback. "
1485                        "Please fix your driver for proper sysfs support, see "
1486                        "http://lwn.net/Articles/36850/\n", vfd->name);
1487 #endif
1488         return 0;
1489 }
1490
1491 /**
1492  *      video_unregister_device - unregister a video4linux device
1493  *      @vfd: the device to unregister
1494  *
1495  *      This unregisters the passed device and deassigns the minor
1496  *      number. Future open calls will be met with errors.
1497  */
1498
1499 void video_unregister_device(struct video_device *vfd)
1500 {
1501         mutex_lock(&videodev_lock);
1502         if(video_device[vfd->minor]!=vfd)
1503                 panic("videodev: bad unregister");
1504
1505         devfs_remove(vfd->devfs_name);
1506         video_device[vfd->minor]=NULL;
1507         class_device_unregister(&vfd->class_dev);
1508         mutex_unlock(&videodev_lock);
1509 }
1510
1511 /*
1512  * Video fs operations
1513  */
1514 static struct file_operations video_fops=
1515 {
1516         .owner          = THIS_MODULE,
1517         .llseek         = no_llseek,
1518         .open           = video_open,
1519 };
1520
1521 /*
1522  *      Initialise video for linux
1523  */
1524
1525 static int __init videodev_init(void)
1526 {
1527         int ret;
1528
1529         printk(KERN_INFO "Linux video capture interface: v2.00\n");
1530         if (register_chrdev(VIDEO_MAJOR, VIDEO_NAME, &video_fops)) {
1531                 printk(KERN_WARNING "video_dev: unable to get major %d\n", VIDEO_MAJOR);
1532                 return -EIO;
1533         }
1534
1535         ret = class_register(&video_class);
1536         if (ret < 0) {
1537                 unregister_chrdev(VIDEO_MAJOR, VIDEO_NAME);
1538                 printk(KERN_WARNING "video_dev: class_register failed\n");
1539                 return -EIO;
1540         }
1541
1542         return 0;
1543 }
1544
1545 static void __exit videodev_exit(void)
1546 {
1547         class_unregister(&video_class);
1548         unregister_chrdev(VIDEO_MAJOR, VIDEO_NAME);
1549 }
1550
1551 module_init(videodev_init)
1552 module_exit(videodev_exit)
1553
1554 EXPORT_SYMBOL(video_register_device);
1555 EXPORT_SYMBOL(video_unregister_device);
1556 EXPORT_SYMBOL(video_devdata);
1557 EXPORT_SYMBOL(video_usercopy);
1558 EXPORT_SYMBOL(video_exclusive_open);
1559 EXPORT_SYMBOL(video_exclusive_release);
1560 EXPORT_SYMBOL(video_ioctl2);
1561 EXPORT_SYMBOL(video_device_alloc);
1562 EXPORT_SYMBOL(video_device_release);
1563
1564 MODULE_AUTHOR("Alan Cox, Mauro Carvalho Chehab <mchehab@infradead.org>");
1565 MODULE_DESCRIPTION("Device registrar for Video4Linux drivers v2");
1566 MODULE_LICENSE("GPL");
1567
1568
1569 /*
1570  * Local variables:
1571  * c-basic-offset: 8
1572  * End:
1573  */