git.oblomov.eu Git - linux-2.6/blob - 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(" " fmt,  ## arg);                       \
  24                 }
  25
  26 #define dbgarg2(fmt, arg...) \
  27                 if (vfd->debug & V4L2_DEBUG_IOCTL_ARG)                  \
  28                         printk(KERN_DEBUG "%s: " fmt, vfd->name, ## arg);
  29
  30 #include <linux/module.h>
  31 #include <linux/types.h>
  32 #include <linux/kernel.h>
  33 #include <linux/mm.h>
  34 #include <linux/string.h>
  35 #include <linux/errno.h>
  36 #include <linux/init.h>
  37 #include <linux/kmod.h>
  38 #include <linux/slab.h>
  39 #include <linux/smp_lock.h>
  40 #include <asm/uaccess.h>
  41 #include <asm/system.h>
  42
  43 #define __OLD_VIDIOC_ /* To allow fixing old calls*/
  44 #include <linux/videodev2.h>
  45
  46 #ifdef CONFIG_VIDEO_V4L1
  47 #include <linux/videodev.h>
  48 #endif
  49 #include <media/v4l2-common.h>
  50 #include <linux/video_decoder.h>
  51
  52 #define VIDEO_NUM_DEVICES       256
  53 #define VIDEO_NAME              "video4linux"
  54
  55 struct std_descr {
  56         v4l2_std_id std;
  57         const char *descr;
  58 };
  59
  60 static const struct std_descr standards[] = {
  61         { V4L2_STD_NTSC,        "NTSC"      },
  62         { V4L2_STD_NTSC_M,      "NTSC-M"    },
  63         { V4L2_STD_NTSC_M_JP,   "NTSC-M-JP" },
  64         { V4L2_STD_NTSC_M_KR,   "NTSC-M-KR" },
  65         { V4L2_STD_NTSC_443,    "NTSC-443"  },
  66         { V4L2_STD_PAL,         "PAL"       },
  67         { V4L2_STD_PAL_BG,      "PAL-BG"    },
  68         { V4L2_STD_PAL_B,       "PAL-B"     },
  69         { V4L2_STD_PAL_B1,      "PAL-B1"    },
  70         { V4L2_STD_PAL_G,       "PAL-G"     },
  71         { V4L2_STD_PAL_H,       "PAL-H"     },
  72         { V4L2_STD_PAL_I,       "PAL-I"     },
  73         { V4L2_STD_PAL_DK,      "PAL-DK"    },
  74         { V4L2_STD_PAL_D,       "PAL-D"     },
  75         { V4L2_STD_PAL_D1,      "PAL-D1"    },
  76         { V4L2_STD_PAL_K,       "PAL-K"     },
  77         { V4L2_STD_PAL_M,       "PAL-M"     },
  78         { V4L2_STD_PAL_N,       "PAL-N"     },
  79         { V4L2_STD_PAL_Nc,      "PAL-Nc"    },
  80         { V4L2_STD_PAL_60,      "PAL-60"    },
  81         { V4L2_STD_SECAM,       "SECAM"     },
  82         { V4L2_STD_SECAM_B,     "SECAM-B"   },
  83         { V4L2_STD_SECAM_G,     "SECAM-G"   },
  84         { V4L2_STD_SECAM_H,     "SECAM-H"   },
  85         { V4L2_STD_SECAM_DK,    "SECAM-DK"  },
  86         { V4L2_STD_SECAM_D,     "SECAM-D"   },
  87         { V4L2_STD_SECAM_K,     "SECAM-K"   },
  88         { V4L2_STD_SECAM_K1,    "SECAM-K1"  },
  89         { V4L2_STD_SECAM_L,     "SECAM-L"   },
  90         { V4L2_STD_SECAM_LC,    "SECAM-Lc"  },
  91         { 0,                    "Unknown"   }
  92 };
  93
  94 /* video4linux standard ID conversion to standard name
  95  */
  96 const char *v4l2_norm_to_name(v4l2_std_id id)
  97 {
  98         u32 myid = id;
  99         int i;
 100
 101         /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
 102            64 bit comparations. So, on that architecture, with some gcc
 103            variants, compilation fails. Currently, the max value is 30bit wide.
 104          */
 105         BUG_ON(myid != id);
 106
 107         for (i = 0; standards[i].std; i++)
 108                 if (myid == standards[i].std)
 109                         break;
 110         return standards[i].descr;
 111 }
 112 EXPORT_SYMBOL(v4l2_norm_to_name);
 113
 114 /* Fill in the fields of a v4l2_standard structure according to the
 115    'id' and 'transmission' parameters.  Returns negative on error.  */
 116 int v4l2_video_std_construct(struct v4l2_standard *vs,
 117                              int id, const char *name)
 118 {
 119         u32 index = vs->index;
 120
 121         memset(vs, 0, sizeof(struct v4l2_standard));
 122         vs->index = index;
 123         vs->id    = id;
 124         if (id & V4L2_STD_525_60) {
 125                 vs->frameperiod.numerator = 1001;
 126                 vs->frameperiod.denominator = 30000;
 127                 vs->framelines = 525;
 128         } else {
 129                 vs->frameperiod.numerator = 1;
 130                 vs->frameperiod.denominator = 25;
 131                 vs->framelines = 625;
 132         }
 133         strlcpy(vs->name, name, sizeof(vs->name));
 134         return 0;
 135 }
 136 EXPORT_SYMBOL(v4l2_video_std_construct);
 137
 138 /* ----------------------------------------------------------------- */
 139 /* some arrays for pretty-printing debug messages of enum types      */
 140
 141 char *v4l2_field_names[] = {
 142         [V4L2_FIELD_ANY]        = "any",
 143         [V4L2_FIELD_NONE]       = "none",
 144         [V4L2_FIELD_TOP]        = "top",
 145         [V4L2_FIELD_BOTTOM]     = "bottom",
 146         [V4L2_FIELD_INTERLACED] = "interlaced",
 147         [V4L2_FIELD_SEQ_TB]     = "seq-tb",
 148         [V4L2_FIELD_SEQ_BT]     = "seq-bt",
 149         [V4L2_FIELD_ALTERNATE]  = "alternate",
 150         [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",
 151         [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",
 152 };
 153 EXPORT_SYMBOL(v4l2_field_names);
 154
 155 char *v4l2_type_names[] = {
 156         [V4L2_BUF_TYPE_VIDEO_CAPTURE]      = "video-cap",
 157         [V4L2_BUF_TYPE_VIDEO_OVERLAY]      = "video-over",
 158         [V4L2_BUF_TYPE_VIDEO_OUTPUT]       = "video-out",
 159         [V4L2_BUF_TYPE_VBI_CAPTURE]        = "vbi-cap",
 160         [V4L2_BUF_TYPE_VBI_OUTPUT]         = "vbi-out",
 161         [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",
 162         [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT]  = "sliced-vbi-out",
 163         [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "video-out-over",
 164 };
 165 EXPORT_SYMBOL(v4l2_type_names);
 166
 167 static char *v4l2_memory_names[] = {
 168         [V4L2_MEMORY_MMAP]    = "mmap",
 169         [V4L2_MEMORY_USERPTR] = "userptr",
 170         [V4L2_MEMORY_OVERLAY] = "overlay",
 171 };
 172
 173 #define prt_names(a, arr) ((((a) >= 0) && ((a) < ARRAY_SIZE(arr))) ? \
 174                            arr[a] : "unknown")
 175
 176 /* ------------------------------------------------------------------ */
 177 /* debug help functions                                               */
 178
 179 #ifdef CONFIG_VIDEO_V4L1_COMPAT
 180 static const char *v4l1_ioctls[] = {
 181         [_IOC_NR(VIDIOCGCAP)]       = "VIDIOCGCAP",
 182         [_IOC_NR(VIDIOCGCHAN)]      = "VIDIOCGCHAN",
 183         [_IOC_NR(VIDIOCSCHAN)]      = "VIDIOCSCHAN",
 184         [_IOC_NR(VIDIOCGTUNER)]     = "VIDIOCGTUNER",
 185         [_IOC_NR(VIDIOCSTUNER)]     = "VIDIOCSTUNER",
 186         [_IOC_NR(VIDIOCGPICT)]      = "VIDIOCGPICT",
 187         [_IOC_NR(VIDIOCSPICT)]      = "VIDIOCSPICT",
 188         [_IOC_NR(VIDIOCCAPTURE)]    = "VIDIOCCAPTURE",
 189         [_IOC_NR(VIDIOCGWIN)]       = "VIDIOCGWIN",
 190         [_IOC_NR(VIDIOCSWIN)]       = "VIDIOCSWIN",
 191         [_IOC_NR(VIDIOCGFBUF)]      = "VIDIOCGFBUF",
 192         [_IOC_NR(VIDIOCSFBUF)]      = "VIDIOCSFBUF",
 193         [_IOC_NR(VIDIOCKEY)]        = "VIDIOCKEY",
 194         [_IOC_NR(VIDIOCGFREQ)]      = "VIDIOCGFREQ",
 195         [_IOC_NR(VIDIOCSFREQ)]      = "VIDIOCSFREQ",
 196         [_IOC_NR(VIDIOCGAUDIO)]     = "VIDIOCGAUDIO",
 197         [_IOC_NR(VIDIOCSAUDIO)]     = "VIDIOCSAUDIO",
 198         [_IOC_NR(VIDIOCSYNC)]       = "VIDIOCSYNC",
 199         [_IOC_NR(VIDIOCMCAPTURE)]   = "VIDIOCMCAPTURE",
 200         [_IOC_NR(VIDIOCGMBUF)]      = "VIDIOCGMBUF",
 201         [_IOC_NR(VIDIOCGUNIT)]      = "VIDIOCGUNIT",
 202         [_IOC_NR(VIDIOCGCAPTURE)]   = "VIDIOCGCAPTURE",
 203         [_IOC_NR(VIDIOCSCAPTURE)]   = "VIDIOCSCAPTURE",
 204         [_IOC_NR(VIDIOCSPLAYMODE)]  = "VIDIOCSPLAYMODE",
 205         [_IOC_NR(VIDIOCSWRITEMODE)] = "VIDIOCSWRITEMODE",
 206         [_IOC_NR(VIDIOCGPLAYINFO)]  = "VIDIOCGPLAYINFO",
 207         [_IOC_NR(VIDIOCSMICROCODE)] = "VIDIOCSMICROCODE",
 208         [_IOC_NR(VIDIOCGVBIFMT)]    = "VIDIOCGVBIFMT",
 209         [_IOC_NR(VIDIOCSVBIFMT)]    = "VIDIOCSVBIFMT"
 210 };
 211 #define V4L1_IOCTLS ARRAY_SIZE(v4l1_ioctls)
 212 #endif
 213
 214 static const char *v4l2_ioctls[] = {
 215         [_IOC_NR(VIDIOC_QUERYCAP)]         = "VIDIOC_QUERYCAP",
 216         [_IOC_NR(VIDIOC_RESERVED)]         = "VIDIOC_RESERVED",
 217         [_IOC_NR(VIDIOC_ENUM_FMT)]         = "VIDIOC_ENUM_FMT",
 218         [_IOC_NR(VIDIOC_G_FMT)]            = "VIDIOC_G_FMT",
 219         [_IOC_NR(VIDIOC_S_FMT)]            = "VIDIOC_S_FMT",
 220         [_IOC_NR(VIDIOC_REQBUFS)]          = "VIDIOC_REQBUFS",
 221         [_IOC_NR(VIDIOC_QUERYBUF)]         = "VIDIOC_QUERYBUF",
 222         [_IOC_NR(VIDIOC_G_FBUF)]           = "VIDIOC_G_FBUF",
 223         [_IOC_NR(VIDIOC_S_FBUF)]           = "VIDIOC_S_FBUF",
 224         [_IOC_NR(VIDIOC_OVERLAY)]          = "VIDIOC_OVERLAY",
 225         [_IOC_NR(VIDIOC_QBUF)]             = "VIDIOC_QBUF",
 226         [_IOC_NR(VIDIOC_DQBUF)]            = "VIDIOC_DQBUF",
 227         [_IOC_NR(VIDIOC_STREAMON)]         = "VIDIOC_STREAMON",
 228         [_IOC_NR(VIDIOC_STREAMOFF)]        = "VIDIOC_STREAMOFF",
 229         [_IOC_NR(VIDIOC_G_PARM)]           = "VIDIOC_G_PARM",
 230         [_IOC_NR(VIDIOC_S_PARM)]           = "VIDIOC_S_PARM",
 231         [_IOC_NR(VIDIOC_G_STD)]            = "VIDIOC_G_STD",
 232         [_IOC_NR(VIDIOC_S_STD)]            = "VIDIOC_S_STD",
 233         [_IOC_NR(VIDIOC_ENUMSTD)]          = "VIDIOC_ENUMSTD",
 234         [_IOC_NR(VIDIOC_ENUMINPUT)]        = "VIDIOC_ENUMINPUT",
 235         [_IOC_NR(VIDIOC_G_CTRL)]           = "VIDIOC_G_CTRL",
 236         [_IOC_NR(VIDIOC_S_CTRL)]           = "VIDIOC_S_CTRL",
 237         [_IOC_NR(VIDIOC_G_TUNER)]          = "VIDIOC_G_TUNER",
 238         [_IOC_NR(VIDIOC_S_TUNER)]          = "VIDIOC_S_TUNER",
 239         [_IOC_NR(VIDIOC_G_AUDIO)]          = "VIDIOC_G_AUDIO",
 240         [_IOC_NR(VIDIOC_S_AUDIO)]          = "VIDIOC_S_AUDIO",
 241         [_IOC_NR(VIDIOC_QUERYCTRL)]        = "VIDIOC_QUERYCTRL",
 242         [_IOC_NR(VIDIOC_QUERYMENU)]        = "VIDIOC_QUERYMENU",
 243         [_IOC_NR(VIDIOC_G_INPUT)]          = "VIDIOC_G_INPUT",
 244         [_IOC_NR(VIDIOC_S_INPUT)]          = "VIDIOC_S_INPUT",
 245         [_IOC_NR(VIDIOC_G_OUTPUT)]         = "VIDIOC_G_OUTPUT",
 246         [_IOC_NR(VIDIOC_S_OUTPUT)]         = "VIDIOC_S_OUTPUT",
 247         [_IOC_NR(VIDIOC_ENUMOUTPUT)]       = "VIDIOC_ENUMOUTPUT",
 248         [_IOC_NR(VIDIOC_G_AUDOUT)]         = "VIDIOC_G_AUDOUT",
 249         [_IOC_NR(VIDIOC_S_AUDOUT)]         = "VIDIOC_S_AUDOUT",
 250         [_IOC_NR(VIDIOC_G_MODULATOR)]      = "VIDIOC_G_MODULATOR",
 251         [_IOC_NR(VIDIOC_S_MODULATOR)]      = "VIDIOC_S_MODULATOR",
 252         [_IOC_NR(VIDIOC_G_FREQUENCY)]      = "VIDIOC_G_FREQUENCY",
 253         [_IOC_NR(VIDIOC_S_FREQUENCY)]      = "VIDIOC_S_FREQUENCY",
 254         [_IOC_NR(VIDIOC_CROPCAP)]          = "VIDIOC_CROPCAP",
 255         [_IOC_NR(VIDIOC_G_CROP)]           = "VIDIOC_G_CROP",
 256         [_IOC_NR(VIDIOC_S_CROP)]           = "VIDIOC_S_CROP",
 257         [_IOC_NR(VIDIOC_G_JPEGCOMP)]       = "VIDIOC_G_JPEGCOMP",
 258         [_IOC_NR(VIDIOC_S_JPEGCOMP)]       = "VIDIOC_S_JPEGCOMP",
 259         [_IOC_NR(VIDIOC_QUERYSTD)]         = "VIDIOC_QUERYSTD",
 260         [_IOC_NR(VIDIOC_TRY_FMT)]          = "VIDIOC_TRY_FMT",
 261         [_IOC_NR(VIDIOC_ENUMAUDIO)]        = "VIDIOC_ENUMAUDIO",
 262         [_IOC_NR(VIDIOC_ENUMAUDOUT)]       = "VIDIOC_ENUMAUDOUT",
 263         [_IOC_NR(VIDIOC_G_PRIORITY)]       = "VIDIOC_G_PRIORITY",
 264         [_IOC_NR(VIDIOC_S_PRIORITY)]       = "VIDIOC_S_PRIORITY",
 265         [_IOC_NR(VIDIOC_G_SLICED_VBI_CAP)] = "VIDIOC_G_SLICED_VBI_CAP",
 266         [_IOC_NR(VIDIOC_LOG_STATUS)]       = "VIDIOC_LOG_STATUS",
 267         [_IOC_NR(VIDIOC_G_EXT_CTRLS)]      = "VIDIOC_G_EXT_CTRLS",
 268         [_IOC_NR(VIDIOC_S_EXT_CTRLS)]      = "VIDIOC_S_EXT_CTRLS",
 269         [_IOC_NR(VIDIOC_TRY_EXT_CTRLS)]    = "VIDIOC_TRY_EXT_CTRLS",
 270 #if 1
 271         [_IOC_NR(VIDIOC_ENUM_FRAMESIZES)]  = "VIDIOC_ENUM_FRAMESIZES",
 272         [_IOC_NR(VIDIOC_ENUM_FRAMEINTERVALS)] = "VIDIOC_ENUM_FRAMEINTERVALS",
 273         [_IOC_NR(VIDIOC_G_ENC_INDEX)]      = "VIDIOC_G_ENC_INDEX",
 274         [_IOC_NR(VIDIOC_ENCODER_CMD)]      = "VIDIOC_ENCODER_CMD",
 275         [_IOC_NR(VIDIOC_TRY_ENCODER_CMD)]  = "VIDIOC_TRY_ENCODER_CMD",
 276
 277         [_IOC_NR(VIDIOC_DBG_S_REGISTER)]   = "VIDIOC_DBG_S_REGISTER",
 278         [_IOC_NR(VIDIOC_DBG_G_REGISTER)]   = "VIDIOC_DBG_G_REGISTER",
 279
 280         [_IOC_NR(VIDIOC_G_CHIP_IDENT)]     = "VIDIOC_G_CHIP_IDENT",
 281         [_IOC_NR(VIDIOC_S_HW_FREQ_SEEK)]   = "VIDIOC_S_HW_FREQ_SEEK",
 282 #endif
 283 };
 284 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
 285
 286 static const char *v4l2_int_ioctls[] = {
 287 #ifdef CONFIG_VIDEO_V4L1_COMPAT
 288         [_IOC_NR(DECODER_GET_CAPABILITIES)]    = "DECODER_GET_CAPABILITIES",
 289         [_IOC_NR(DECODER_GET_STATUS)]          = "DECODER_GET_STATUS",
 290         [_IOC_NR(DECODER_SET_NORM)]            = "DECODER_SET_NORM",
 291         [_IOC_NR(DECODER_SET_INPUT)]           = "DECODER_SET_INPUT",
 292         [_IOC_NR(DECODER_SET_OUTPUT)]          = "DECODER_SET_OUTPUT",
 293         [_IOC_NR(DECODER_ENABLE_OUTPUT)]       = "DECODER_ENABLE_OUTPUT",
 294         [_IOC_NR(DECODER_SET_PICTURE)]         = "DECODER_SET_PICTURE",
 295         [_IOC_NR(DECODER_SET_GPIO)]            = "DECODER_SET_GPIO",
 296         [_IOC_NR(DECODER_INIT)]                = "DECODER_INIT",
 297         [_IOC_NR(DECODER_SET_VBI_BYPASS)]      = "DECODER_SET_VBI_BYPASS",
 298         [_IOC_NR(DECODER_DUMP)]                = "DECODER_DUMP",
 299 #endif
 300         [_IOC_NR(AUDC_SET_RADIO)]              = "AUDC_SET_RADIO",
 301
 302         [_IOC_NR(TUNER_SET_TYPE_ADDR)]         = "TUNER_SET_TYPE_ADDR",
 303         [_IOC_NR(TUNER_SET_STANDBY)]           = "TUNER_SET_STANDBY",
 304         [_IOC_NR(TUNER_SET_CONFIG)]            = "TUNER_SET_CONFIG",
 305
 306         [_IOC_NR(VIDIOC_INT_S_TUNER_MODE)]     = "VIDIOC_INT_S_TUNER_MODE",
 307         [_IOC_NR(VIDIOC_INT_RESET)]            = "VIDIOC_INT_RESET",
 308         [_IOC_NR(VIDIOC_INT_AUDIO_CLOCK_FREQ)] = "VIDIOC_INT_AUDIO_CLOCK_FREQ",
 309         [_IOC_NR(VIDIOC_INT_DECODE_VBI_LINE)]  = "VIDIOC_INT_DECODE_VBI_LINE",
 310         [_IOC_NR(VIDIOC_INT_S_VBI_DATA)]       = "VIDIOC_INT_S_VBI_DATA",
 311         [_IOC_NR(VIDIOC_INT_G_VBI_DATA)]       = "VIDIOC_INT_G_VBI_DATA",
 312         [_IOC_NR(VIDIOC_INT_I2S_CLOCK_FREQ)]   = "VIDIOC_INT_I2S_CLOCK_FREQ",
 313         [_IOC_NR(VIDIOC_INT_S_STANDBY)]        = "VIDIOC_INT_S_STANDBY",
 314         [_IOC_NR(VIDIOC_INT_S_AUDIO_ROUTING)]  = "VIDIOC_INT_S_AUDIO_ROUTING",
 315         [_IOC_NR(VIDIOC_INT_G_AUDIO_ROUTING)]  = "VIDIOC_INT_G_AUDIO_ROUTING",
 316         [_IOC_NR(VIDIOC_INT_S_VIDEO_ROUTING)]  = "VIDIOC_INT_S_VIDEO_ROUTING",
 317         [_IOC_NR(VIDIOC_INT_G_VIDEO_ROUTING)]  = "VIDIOC_INT_G_VIDEO_ROUTING",
 318         [_IOC_NR(VIDIOC_INT_S_CRYSTAL_FREQ)]   = "VIDIOC_INT_S_CRYSTAL_FREQ",
 319         [_IOC_NR(VIDIOC_INT_INIT)]             = "VIDIOC_INT_INIT",
 320         [_IOC_NR(VIDIOC_INT_G_STD_OUTPUT)]     = "VIDIOC_INT_G_STD_OUTPUT",
 321         [_IOC_NR(VIDIOC_INT_S_STD_OUTPUT)]     = "VIDIOC_INT_S_STD_OUTPUT",
 322 };
 323 #define V4L2_INT_IOCTLS ARRAY_SIZE(v4l2_int_ioctls)
 324
 325 /* Common ioctl debug function. This function can be used by
 326    external ioctl messages as well as internal V4L ioctl */
 327 void v4l_printk_ioctl(unsigned int cmd)
 328 {
 329         char *dir, *type;
 330
 331         switch (_IOC_TYPE(cmd)) {
 332         case 'd':
 333                 if (_IOC_NR(cmd) >= V4L2_INT_IOCTLS) {
 334                         type = "v4l2_int";
 335                         break;
 336                 }
 337                 printk("%s", v4l2_int_ioctls[_IOC_NR(cmd)]);
 338                 return;
 339 #ifdef CONFIG_VIDEO_V4L1_COMPAT
 340         case 'v':
 341                 if (_IOC_NR(cmd) >= V4L1_IOCTLS) {
 342                         type = "v4l1";
 343                         break;
 344                 }
 345                 printk("%s", v4l1_ioctls[_IOC_NR(cmd)]);
 346                 return;
 347 #endif
 348         case 'V':
 349                 if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
 350                         type = "v4l2";
 351                         break;
 352                 }
 353                 printk("%s", v4l2_ioctls[_IOC_NR(cmd)]);
 354                 return;
 355         default:
 356                 type = "unknown";
 357         }
 358
 359         switch (_IOC_DIR(cmd)) {
 360         case _IOC_NONE:              dir = "--"; break;
 361         case _IOC_READ:              dir = "r-"; break;
 362         case _IOC_WRITE:             dir = "-w"; break;
 363         case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
 364         default:                     dir = "*ERR*"; break;
 365         }
 366         printk("%s ioctl '%c', dir=%s, #%d (0x%08x)",
 367                 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
 368 }
 369 EXPORT_SYMBOL(v4l_printk_ioctl);
 370
 371 /*
 372  *      sysfs stuff
 373  */
 374
 375 static ssize_t show_name(struct device *cd,
 376                          struct device_attribute *attr, char *buf)
 377 {
 378         struct video_device *vfd = container_of(cd, struct video_device,
 379                                                 class_dev);
 380         return sprintf(buf, "%.*s\n", (int)sizeof(vfd->name), vfd->name);
 381 }
 382
 383 struct video_device *video_device_alloc(void)
 384 {
 385         struct video_device *vfd;
 386
 387         vfd = kzalloc(sizeof(*vfd),GFP_KERNEL);
 388         return vfd;
 389 }
 390 EXPORT_SYMBOL(video_device_alloc);
 391
 392 void video_device_release(struct video_device *vfd)
 393 {
 394         kfree(vfd);
 395 }
 396 EXPORT_SYMBOL(video_device_release);
 397
 398 static void video_release(struct device *cd)
 399 {
 400         struct video_device *vfd = container_of(cd, struct video_device,
 401                                                                 class_dev);
 402
 403 #if 1
 404         /* needed until all drivers are fixed */
 405         if (!vfd->release)
 406                 return;
 407 #endif
 408         vfd->release(vfd);
 409 }
 410
 411 static struct device_attribute video_device_attrs[] = {
 412         __ATTR(name, S_IRUGO, show_name, NULL),
 413         __ATTR_NULL
 414 };
 415
 416 static struct class video_class = {
 417         .name    = VIDEO_NAME,
 418         .dev_attrs = video_device_attrs,
 419         .dev_release = video_release,
 420 };
 421
 422 /*
 423  *      Active devices
 424  */
 425
 426 static struct video_device *video_device[VIDEO_NUM_DEVICES];
 427 static DEFINE_MUTEX(videodev_lock);
 428
 429 struct video_device* video_devdata(struct file *file)
 430 {
 431         return video_device[iminor(file->f_path.dentry->d_inode)];
 432 }
 433 EXPORT_SYMBOL(video_devdata);
 434
 435 /*
 436  *      Open a video device - FIXME: Obsoleted
 437  */
 438 static int video_open(struct inode *inode, struct file *file)
 439 {
 440         unsigned int minor = iminor(inode);
 441         int err = 0;
 442         struct video_device *vfl;
 443         const struct file_operations *old_fops;
 444
 445         if(minor>=VIDEO_NUM_DEVICES)
 446                 return -ENODEV;
 447         lock_kernel();
 448         mutex_lock(&videodev_lock);
 449         vfl=video_device[minor];
 450         if(vfl==NULL) {
 451                 mutex_unlock(&videodev_lock);
 452                 request_module("char-major-%d-%d", VIDEO_MAJOR, minor);
 453                 mutex_lock(&videodev_lock);
 454                 vfl=video_device[minor];
 455                 if (vfl==NULL) {
 456                         mutex_unlock(&videodev_lock);
 457                         unlock_kernel();
 458                         return -ENODEV;
 459                 }
 460         }
 461         old_fops = file->f_op;
 462         file->f_op = fops_get(vfl->fops);
 463         if(file->f_op->open)
 464                 err = file->f_op->open(inode,file);
 465         if (err) {
 466                 fops_put(file->f_op);
 467                 file->f_op = fops_get(old_fops);
 468         }
 469         fops_put(old_fops);
 470         mutex_unlock(&videodev_lock);
 471         unlock_kernel();
 472         return err;
 473 }
 474
 475 /*
 476  * helper function -- handles userspace copying for ioctl arguments
 477  */
 478
 479 #ifdef __OLD_VIDIOC_
 480 static unsigned int
 481 video_fix_command(unsigned int cmd)
 482 {
 483         switch (cmd) {
 484         case VIDIOC_OVERLAY_OLD:
 485                 cmd = VIDIOC_OVERLAY;
 486                 break;
 487         case VIDIOC_S_PARM_OLD:
 488                 cmd = VIDIOC_S_PARM;
 489                 break;
 490         case VIDIOC_S_CTRL_OLD:
 491                 cmd = VIDIOC_S_CTRL;
 492                 break;
 493         case VIDIOC_G_AUDIO_OLD:
 494                 cmd = VIDIOC_G_AUDIO;
 495                 break;
 496         case VIDIOC_G_AUDOUT_OLD:
 497                 cmd = VIDIOC_G_AUDOUT;
 498                 break;
 499         case VIDIOC_CROPCAP_OLD:
 500                 cmd = VIDIOC_CROPCAP;
 501                 break;
 502         }
 503         return cmd;
 504 }
 505 #endif
 506
 507 /*
 508  * Obsolete usercopy function - Should be removed soon
 509  */
 510 int
 511 video_usercopy(struct inode *inode, struct file *file,
 512                unsigned int cmd, unsigned long arg,
 513                int (*func)(struct inode *inode, struct file *file,
 514                            unsigned int cmd, void *arg))
 515 {
 516         char    sbuf[128];
 517         void    *mbuf = NULL;
 518         void    *parg = NULL;
 519         int     err  = -EINVAL;
 520         int     is_ext_ctrl;
 521         size_t  ctrls_size = 0;
 522         void __user *user_ptr = NULL;
 523
 524 #ifdef __OLD_VIDIOC_
 525         cmd = video_fix_command(cmd);
 526 #endif
 527         is_ext_ctrl = (cmd == VIDIOC_S_EXT_CTRLS || cmd == VIDIOC_G_EXT_CTRLS ||
 528                        cmd == VIDIOC_TRY_EXT_CTRLS);
 529
 530         /*  Copy arguments into temp kernel buffer  */
 531         switch (_IOC_DIR(cmd)) {
 532         case _IOC_NONE:
 533                 parg = NULL;
 534                 break;
 535         case _IOC_READ:
 536         case _IOC_WRITE:
 537         case (_IOC_WRITE | _IOC_READ):
 538                 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
 539                         parg = sbuf;
 540                 } else {
 541                         /* too big to allocate from stack */
 542                         mbuf = kmalloc(_IOC_SIZE(cmd),GFP_KERNEL);
 543                         if (NULL == mbuf)
 544                                 return -ENOMEM;
 545                         parg = mbuf;
 546                 }
 547
 548                 err = -EFAULT;
 549                 if (_IOC_DIR(cmd) & _IOC_WRITE)
 550                         if (copy_from_user(parg, (void __user *)arg, _IOC_SIZE(cmd)))
 551                                 goto out;
 552                 break;
 553         }
 554         if (is_ext_ctrl) {
 555                 struct v4l2_ext_controls *p = parg;
 556
 557                 /* In case of an error, tell the caller that it wasn't
 558                    a specific control that caused it. */
 559                 p->error_idx = p->count;
 560                 user_ptr = (void __user *)p->controls;
 561                 if (p->count) {
 562                         ctrls_size = sizeof(struct v4l2_ext_control) * p->count;
 563                         /* Note: v4l2_ext_controls fits in sbuf[] so mbuf is still NULL. */
 564                         mbuf = kmalloc(ctrls_size, GFP_KERNEL);
 565                         err = -ENOMEM;
 566                         if (NULL == mbuf)
 567                                 goto out_ext_ctrl;
 568                         err = -EFAULT;
 569                         if (copy_from_user(mbuf, user_ptr, ctrls_size))
 570                                 goto out_ext_ctrl;
 571                         p->controls = mbuf;
 572                 }
 573         }
 574
 575         /* call driver */
 576         err = func(inode, file, cmd, parg);
 577         if (err == -ENOIOCTLCMD)
 578                 err = -EINVAL;
 579         if (is_ext_ctrl) {
 580                 struct v4l2_ext_controls *p = parg;
 581
 582                 p->controls = (void *)user_ptr;
 583                 if (p->count && err == 0 && copy_to_user(user_ptr, mbuf, ctrls_size))
 584                         err = -EFAULT;
 585                 goto out_ext_ctrl;
 586         }
 587         if (err < 0)
 588                 goto out;
 589
 590 out_ext_ctrl:
 591         /*  Copy results into user buffer  */
 592         switch (_IOC_DIR(cmd))
 593         {
 594         case _IOC_READ:
 595         case (_IOC_WRITE | _IOC_READ):
 596                 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
 597                         err = -EFAULT;
 598                 break;
 599         }
 600
 601 out:
 602         kfree(mbuf);
 603         return err;
 604 }
 605 EXPORT_SYMBOL(video_usercopy);
 606
 607 /*
 608  * open/release helper functions -- handle exclusive opens
 609  * Should be removed soon
 610  */
 611 int video_exclusive_open(struct inode *inode, struct file *file)
 612 {
 613         struct  video_device *vfl = video_devdata(file);
 614         int retval = 0;
 615
 616         mutex_lock(&vfl->lock);
 617         if (vfl->users) {
 618                 retval = -EBUSY;
 619         } else {
 620                 vfl->users++;
 621         }
 622         mutex_unlock(&vfl->lock);
 623         return retval;
 624 }
 625 EXPORT_SYMBOL(video_exclusive_open);
 626
 627 int video_exclusive_release(struct inode *inode, struct file *file)
 628 {
 629         struct  video_device *vfl = video_devdata(file);
 630
 631         vfl->users--;
 632         return 0;
 633 }
 634 EXPORT_SYMBOL(video_exclusive_release);
 635
 636 static void dbgbuf(unsigned int cmd, struct video_device *vfd,
 637                                         struct v4l2_buffer *p)
 638 {
 639         struct v4l2_timecode *tc=&p->timecode;
 640
 641         dbgarg (cmd, "%02ld:%02d:%02d.%08ld index=%d, type=%s, "
 642                 "bytesused=%d, flags=0x%08d, "
 643                 "field=%0d, sequence=%d, memory=%s, offset/userptr=0x%08lx, length=%d\n",
 644                         (p->timestamp.tv_sec/3600),
 645                         (int)(p->timestamp.tv_sec/60)%60,
 646                         (int)(p->timestamp.tv_sec%60),
 647                         p->timestamp.tv_usec,
 648                         p->index,
 649                         prt_names(p->type, v4l2_type_names),
 650                         p->bytesused, p->flags,
 651                         p->field, p->sequence,
 652                         prt_names(p->memory, v4l2_memory_names),
 653                         p->m.userptr, p->length);
 654         dbgarg2 ("timecode= %02d:%02d:%02d type=%d, "
 655                 "flags=0x%08d, frames=%d, userbits=0x%08x\n",
 656                         tc->hours,tc->minutes,tc->seconds,
 657                         tc->type, tc->flags, tc->frames, *(__u32 *) tc->userbits);
 658 }
 659
 660 static inline void dbgrect(struct video_device *vfd, char *s,
 661                                                         struct v4l2_rect *r)
 662 {
 663         dbgarg2 ("%sRect start at %dx%d, size= %dx%d\n", s, r->left, r->top,
 664                                                 r->width, r->height);
 665 };
 666
 667 static inline void v4l_print_pix_fmt (struct video_device *vfd,
 668                                                 struct v4l2_pix_format *fmt)
 669 {
 670         dbgarg2 ("width=%d, height=%d, format=%c%c%c%c, field=%s, "
 671                 "bytesperline=%d sizeimage=%d, colorspace=%d\n",
 672                 fmt->width,fmt->height,
 673                 (fmt->pixelformat & 0xff),
 674                 (fmt->pixelformat >>  8) & 0xff,
 675                 (fmt->pixelformat >> 16) & 0xff,
 676                 (fmt->pixelformat >> 24) & 0xff,
 677                 prt_names(fmt->field, v4l2_field_names),
 678                 fmt->bytesperline, fmt->sizeimage, fmt->colorspace);
 679 };
 680
 681
 682 static int check_fmt (struct video_device *vfd, enum v4l2_buf_type type)
 683 {
 684         switch (type) {
 685         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 686                 if (vfd->vidioc_try_fmt_cap)
 687                         return (0);
 688                 break;
 689         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
 690                 if (vfd->vidioc_try_fmt_overlay)
 691                         return (0);
 692                 break;
 693         case V4L2_BUF_TYPE_VBI_CAPTURE:
 694                 if (vfd->vidioc_try_fmt_vbi)
 695                         return (0);
 696                 break;
 697         case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
 698                 if (vfd->vidioc_try_fmt_vbi_output)
 699                         return (0);
 700                 break;
 701         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 702                 if (vfd->vidioc_try_fmt_vbi_capture)
 703                         return (0);
 704                 break;
 705         case V4L2_BUF_TYPE_VIDEO_OUTPUT:
 706                 if (vfd->vidioc_try_fmt_video_output)
 707                         return (0);
 708                 break;
 709         case V4L2_BUF_TYPE_VBI_OUTPUT:
 710                 if (vfd->vidioc_try_fmt_vbi_output)
 711                         return (0);
 712                 break;
 713         case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
 714                 if (vfd->vidioc_try_fmt_output_overlay)
 715                         return (0);
 716                 break;
 717         case V4L2_BUF_TYPE_PRIVATE:
 718                 if (vfd->vidioc_try_fmt_type_private)
 719                         return (0);
 720                 break;
 721         }
 722         return (-EINVAL);
 723 }
 724
 725 static int __video_do_ioctl(struct inode *inode, struct file *file,
 726                 unsigned int cmd, void *arg)
 727 {
 728         struct video_device *vfd = video_devdata(file);
 729         void                 *fh = file->private_data;
 730         int                  ret = -EINVAL;
 731
 732         if ( (vfd->debug & V4L2_DEBUG_IOCTL) &&
 733                                 !(vfd->debug & V4L2_DEBUG_IOCTL_ARG)) {
 734                 v4l_print_ioctl(vfd->name, cmd);
 735                 printk("\n");
 736         }
 737
 738 #ifdef CONFIG_VIDEO_V4L1_COMPAT
 739         /***********************************************************
 740          Handles calls to the obsoleted V4L1 API
 741          Due to the nature of VIDIOCGMBUF, each driver that supports
 742          V4L1 should implement its own handler for this ioctl.
 743          ***********************************************************/
 744
 745         /* --- streaming capture ------------------------------------- */
 746         if (cmd == VIDIOCGMBUF) {
 747                 struct video_mbuf *p=arg;
 748
 749                 memset(p, 0, sizeof(*p));
 750
 751                 if (!vfd->vidiocgmbuf)
 752                         return ret;
 753                 ret=vfd->vidiocgmbuf(file, fh, p);
 754                 if (!ret)
 755                         dbgarg (cmd, "size=%d, frames=%d, offsets=0x%08lx\n",
 756                                                 p->size, p->frames,
 757                                                 (unsigned long)p->offsets);
 758                 return ret;
 759         }
 760
 761         /********************************************************
 762          All other V4L1 calls are handled by v4l1_compat module.
 763          Those calls will be translated into V4L2 calls, and
 764          __video_do_ioctl will be called again, with one or more
 765          V4L2 ioctls.
 766          ********************************************************/
 767         if (_IOC_TYPE(cmd)=='v')
 768                 return v4l_compat_translate_ioctl(inode,file,cmd,arg,
 769                                                 __video_do_ioctl);
 770 #endif
 771
 772         switch(cmd) {
 773         /* --- capabilities ------------------------------------------ */
 774         case VIDIOC_QUERYCAP:
 775         {
 776                 struct v4l2_capability *cap = (struct v4l2_capability*)arg;
 777                 memset(cap, 0, sizeof(*cap));
 778
 779                 if (!vfd->vidioc_querycap)
 780                         break;
 781
 782                 ret=vfd->vidioc_querycap(file, fh, cap);
 783                 if (!ret)
 784                         dbgarg (cmd, "driver=%s, card=%s, bus=%s, "
 785                                         "version=0x%08x, "
 786                                         "capabilities=0x%08x\n",
 787                                         cap->driver,cap->card,cap->bus_info,
 788                                         cap->version,
 789                                         cap->capabilities);
 790                 break;
 791         }
 792
 793         /* --- priority ------------------------------------------ */
 794         case VIDIOC_G_PRIORITY:
 795         {
 796                 enum v4l2_priority *p=arg;
 797
 798                 if (!vfd->vidioc_g_priority)
 799                         break;
 800                 ret=vfd->vidioc_g_priority(file, fh, p);
 801                 if (!ret)
 802                         dbgarg(cmd, "priority is %d\n", *p);
 803                 break;
 804         }
 805         case VIDIOC_S_PRIORITY:
 806         {
 807                 enum v4l2_priority *p=arg;
 808
 809                 if (!vfd->vidioc_s_priority)
 810                         break;
 811                 dbgarg(cmd, "setting priority to %d\n", *p);
 812                 ret=vfd->vidioc_s_priority(file, fh, *p);
 813                 break;
 814         }
 815
 816         /* --- capture ioctls ---------------------------------------- */
 817         case VIDIOC_ENUM_FMT:
 818         {
 819                 struct v4l2_fmtdesc *f = arg;
 820                 enum v4l2_buf_type type;
 821                 unsigned int index;
 822
 823                 index = f->index;
 824                 type  = f->type;
 825                 memset(f,0,sizeof(*f));
 826                 f->index = index;
 827                 f->type  = type;
 828
 829                 switch (type) {
 830                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 831                         if (vfd->vidioc_enum_fmt_cap)
 832                                 ret=vfd->vidioc_enum_fmt_cap(file, fh, f);
 833                         break;
 834                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
 835                         if (vfd->vidioc_enum_fmt_overlay)
 836                                 ret=vfd->vidioc_enum_fmt_overlay(file, fh, f);
 837                         break;
 838                 case V4L2_BUF_TYPE_VBI_CAPTURE:
 839                         if (vfd->vidioc_enum_fmt_vbi)
 840                                 ret=vfd->vidioc_enum_fmt_vbi(file, fh, f);
 841                         break;
 842                 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
 843                         if (vfd->vidioc_enum_fmt_vbi_output)
 844                                 ret=vfd->vidioc_enum_fmt_vbi_output(file,
 845                                                                 fh, f);
 846                         break;
 847                 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 848                         if (vfd->vidioc_enum_fmt_vbi_capture)
 849                                 ret=vfd->vidioc_enum_fmt_vbi_capture(file,
 850                                                                 fh, f);
 851                         break;
 852                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
 853                         if (vfd->vidioc_enum_fmt_video_output)
 854                                 ret=vfd->vidioc_enum_fmt_video_output(file,
 855                                                                 fh, f);
 856                         break;
 857                 case V4L2_BUF_TYPE_VBI_OUTPUT:
 858                         if (vfd->vidioc_enum_fmt_vbi_output)
 859                                 ret=vfd->vidioc_enum_fmt_vbi_output(file,
 860                                                                 fh, f);
 861                         break;
 862                 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
 863                         if (vfd->vidioc_enum_fmt_output_overlay)
 864                                 ret=vfd->vidioc_enum_fmt_output_overlay(file, fh, f);
 865                         break;
 866                 case V4L2_BUF_TYPE_PRIVATE:
 867                         if (vfd->vidioc_enum_fmt_type_private)
 868                                 ret=vfd->vidioc_enum_fmt_type_private(file,
 869                                                                 fh, f);
 870                         break;
 871                 }
 872                 if (!ret)
 873                         dbgarg (cmd, "index=%d, type=%d, flags=%d, "
 874                                         "pixelformat=%c%c%c%c, description='%s'\n",
 875                                         f->index, f->type, f->flags,
 876                                         (f->pixelformat & 0xff),
 877                                         (f->pixelformat >>  8) & 0xff,
 878                                         (f->pixelformat >> 16) & 0xff,
 879                                         (f->pixelformat >> 24) & 0xff,
 880                                         f->description);
 881                 break;
 882         }
 883         case VIDIOC_G_FMT:
 884         {
 885                 struct v4l2_format *f = (struct v4l2_format *)arg;
 886                 enum v4l2_buf_type type=f->type;
 887
 888                 memset(&f->fmt.pix,0,sizeof(f->fmt.pix));
 889                 f->type=type;
 890
 891                 /* FIXME: Should be one dump per type */
 892                 dbgarg (cmd, "type=%s\n", prt_names(type,
 893                                         v4l2_type_names));
 894
 895                 switch (type) {
 896                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 897                         if (vfd->vidioc_g_fmt_cap)
 898                                 ret=vfd->vidioc_g_fmt_cap(file, fh, f);
 899                         if (!ret)
 900                                 v4l_print_pix_fmt(vfd,&f->fmt.pix);
 901                         break;
 902                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
 903                         if (vfd->vidioc_g_fmt_overlay)
 904                                 ret=vfd->vidioc_g_fmt_overlay(file, fh, f);
 905                         break;
 906                 case V4L2_BUF_TYPE_VBI_CAPTURE:
 907                         if (vfd->vidioc_g_fmt_vbi)
 908                                 ret=vfd->vidioc_g_fmt_vbi(file, fh, f);
 909                         break;
 910                 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
 911                         if (vfd->vidioc_g_fmt_vbi_output)
 912                                 ret=vfd->vidioc_g_fmt_vbi_output(file, fh, f);
 913                         break;
 914                 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 915                         if (vfd->vidioc_g_fmt_vbi_capture)
 916                                 ret=vfd->vidioc_g_fmt_vbi_capture(file, fh, f);
 917                         break;
 918                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
 919                         if (vfd->vidioc_g_fmt_video_output)
 920                                 ret=vfd->vidioc_g_fmt_video_output(file,
 921                                                                 fh, f);
 922                         break;
 923                 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
 924                         if (vfd->vidioc_g_fmt_output_overlay)
 925                                 ret=vfd->vidioc_g_fmt_output_overlay(file, fh, f);
 926                         break;
 927                 case V4L2_BUF_TYPE_VBI_OUTPUT:
 928                         if (vfd->vidioc_g_fmt_vbi_output)
 929                                 ret=vfd->vidioc_g_fmt_vbi_output(file, fh, f);
 930                         break;
 931                 case V4L2_BUF_TYPE_PRIVATE:
 932                         if (vfd->vidioc_g_fmt_type_private)
 933                                 ret=vfd->vidioc_g_fmt_type_private(file,
 934                                                                 fh, f);
 935                         break;
 936                 }
 937
 938                 break;
 939         }
 940         case VIDIOC_S_FMT:
 941         {
 942                 struct v4l2_format *f = (struct v4l2_format *)arg;
 943
 944                 /* FIXME: Should be one dump per type */
 945                 dbgarg (cmd, "type=%s\n", prt_names(f->type,
 946                                         v4l2_type_names));
 947
 948                 switch (f->type) {
 949                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 950                         v4l_print_pix_fmt(vfd,&f->fmt.pix);
 951                         if (vfd->vidioc_s_fmt_cap)
 952                                 ret=vfd->vidioc_s_fmt_cap(file, fh, f);
 953                         break;
 954                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
 955                         if (vfd->vidioc_s_fmt_overlay)
 956                                 ret=vfd->vidioc_s_fmt_overlay(file, fh, f);
 957                         break;
 958                 case V4L2_BUF_TYPE_VBI_CAPTURE:
 959                         if (vfd->vidioc_s_fmt_vbi)
 960                                 ret=vfd->vidioc_s_fmt_vbi(file, fh, f);
 961                         break;
 962                 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
 963                         if (vfd->vidioc_s_fmt_vbi_output)
 964                                 ret=vfd->vidioc_s_fmt_vbi_output(file, fh, f);
 965                         break;
 966                 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 967                         if (vfd->vidioc_s_fmt_vbi_capture)
 968                                 ret=vfd->vidioc_s_fmt_vbi_capture(file, fh, f);
 969                         break;
 970                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
 971                         if (vfd->vidioc_s_fmt_video_output)
 972                                 ret=vfd->vidioc_s_fmt_video_output(file,
 973                                                                 fh, f);
 974                         break;
 975                 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
 976                         if (vfd->vidioc_s_fmt_output_overlay)
 977                                 ret=vfd->vidioc_s_fmt_output_overlay(file, fh, f);
 978                         break;
 979                 case V4L2_BUF_TYPE_VBI_OUTPUT:
 980                         if (vfd->vidioc_s_fmt_vbi_output)
 981                                 ret=vfd->vidioc_s_fmt_vbi_output(file,
 982                                                                 fh, f);
 983                         break;
 984                 case V4L2_BUF_TYPE_PRIVATE:
 985                         if (vfd->vidioc_s_fmt_type_private)
 986                                 ret=vfd->vidioc_s_fmt_type_private(file,
 987                                                                 fh, f);
 988                         break;
 989                 }
 990                 break;
 991         }
 992         case VIDIOC_TRY_FMT:
 993         {
 994                 struct v4l2_format *f = (struct v4l2_format *)arg;
 995
 996                 /* FIXME: Should be one dump per type */
 997                 dbgarg (cmd, "type=%s\n", prt_names(f->type,
 998                                                 v4l2_type_names));
 999                 switch (f->type) {
1000                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1001                         if (vfd->vidioc_try_fmt_cap)
1002                                 ret=vfd->vidioc_try_fmt_cap(file, fh, f);
1003                         if (!ret)
1004                                 v4l_print_pix_fmt(vfd,&f->fmt.pix);
1005                         break;
1006                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1007                         if (vfd->vidioc_try_fmt_overlay)
1008                                 ret=vfd->vidioc_try_fmt_overlay(file, fh, f);
1009                         break;
1010                 case V4L2_BUF_TYPE_VBI_CAPTURE:
1011                         if (vfd->vidioc_try_fmt_vbi)
1012                                 ret=vfd->vidioc_try_fmt_vbi(file, fh, f);
1013                         break;
1014                 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1015                         if (vfd->vidioc_try_fmt_vbi_output)
1016                                 ret=vfd->vidioc_try_fmt_vbi_output(file,
1017                                                                 fh, f);
1018                         break;
1019                 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1020                         if (vfd->vidioc_try_fmt_vbi_capture)
1021                                 ret=vfd->vidioc_try_fmt_vbi_capture(file,
1022                                                                 fh, f);
1023                         break;
1024                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1025                         if (vfd->vidioc_try_fmt_video_output)
1026                                 ret=vfd->vidioc_try_fmt_video_output(file,
1027                                                                 fh, f);
1028                         break;
1029                 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1030                         if (vfd->vidioc_try_fmt_output_overlay)
1031                                 ret=vfd->vidioc_try_fmt_output_overlay(file, fh, f);
1032                         break;
1033                 case V4L2_BUF_TYPE_VBI_OUTPUT:
1034                         if (vfd->vidioc_try_fmt_vbi_output)
1035                                 ret=vfd->vidioc_try_fmt_vbi_output(file,
1036                                                                 fh, f);
1037                         break;
1038                 case V4L2_BUF_TYPE_PRIVATE:
1039                         if (vfd->vidioc_try_fmt_type_private)
1040                                 ret=vfd->vidioc_try_fmt_type_private(file,
1041                                                                 fh, f);
1042                         break;
1043                 }
1044
1045                 break;
1046         }
1047         /* FIXME: Those buf reqs could be handled here,
1048            with some changes on videobuf to allow its header to be included at
1049            videodev2.h or being merged at videodev2.
1050          */
1051         case VIDIOC_REQBUFS:
1052         {
1053                 struct v4l2_requestbuffers *p=arg;
1054
1055                 if (!vfd->vidioc_reqbufs)
1056                         break;
1057                 ret = check_fmt (vfd, p->type);
1058                 if (ret)
1059                         break;
1060
1061                 ret=vfd->vidioc_reqbufs(file, fh, p);
1062                 dbgarg (cmd, "count=%d, type=%s, memory=%s\n",
1063                                 p->count,
1064                                 prt_names(p->type, v4l2_type_names),
1065                                 prt_names(p->memory, v4l2_memory_names));
1066                 break;
1067         }
1068         case VIDIOC_QUERYBUF:
1069         {
1070                 struct v4l2_buffer *p=arg;
1071
1072                 if (!vfd->vidioc_querybuf)
1073                         break;
1074                 ret = check_fmt (vfd, p->type);
1075                 if (ret)
1076                         break;
1077
1078                 ret=vfd->vidioc_querybuf(file, fh, p);
1079                 if (!ret)
1080                         dbgbuf(cmd,vfd,p);
1081                 break;
1082         }
1083         case VIDIOC_QBUF:
1084         {
1085                 struct v4l2_buffer *p=arg;
1086
1087                 if (!vfd->vidioc_qbuf)
1088                         break;
1089                 ret = check_fmt (vfd, p->type);
1090                 if (ret)
1091                         break;
1092
1093                 ret=vfd->vidioc_qbuf(file, fh, p);
1094                 if (!ret)
1095                         dbgbuf(cmd,vfd,p);
1096                 break;
1097         }
1098         case VIDIOC_DQBUF:
1099         {
1100                 struct v4l2_buffer *p=arg;
1101                 if (!vfd->vidioc_dqbuf)
1102                         break;
1103                 ret = check_fmt (vfd, p->type);
1104                 if (ret)
1105                         break;
1106
1107                 ret=vfd->vidioc_dqbuf(file, fh, p);
1108                 if (!ret)
1109                         dbgbuf(cmd,vfd,p);
1110                 break;
1111         }
1112         case VIDIOC_OVERLAY:
1113         {
1114                 int *i = arg;
1115
1116                 if (!vfd->vidioc_overlay)
1117                         break;
1118                 dbgarg (cmd, "value=%d\n",*i);
1119                 ret=vfd->vidioc_overlay(file, fh, *i);
1120                 break;
1121         }
1122         case VIDIOC_G_FBUF:
1123         {
1124                 struct v4l2_framebuffer *p=arg;
1125                 if (!vfd->vidioc_g_fbuf)
1126                         break;
1127                 ret=vfd->vidioc_g_fbuf(file, fh, arg);
1128                 if (!ret) {
1129                         dbgarg (cmd, "capability=%d, flags=%d, base=0x%08lx\n",
1130                                         p->capability,p->flags,
1131                                         (unsigned long)p->base);
1132                         v4l_print_pix_fmt (vfd, &p->fmt);
1133                 }
1134                 break;
1135         }
1136         case VIDIOC_S_FBUF:
1137         {
1138                 struct v4l2_framebuffer *p=arg;
1139                 if (!vfd->vidioc_s_fbuf)
1140                         break;
1141
1142                 dbgarg (cmd, "capability=%d, flags=%d, base=0x%08lx\n",
1143                                 p->capability,p->flags,(unsigned long)p->base);
1144                 v4l_print_pix_fmt (vfd, &p->fmt);
1145                 ret=vfd->vidioc_s_fbuf(file, fh, arg);
1146
1147                 break;
1148         }
1149         case VIDIOC_STREAMON:
1150         {
1151                 enum v4l2_buf_type i = *(int *)arg;
1152                 if (!vfd->vidioc_streamon)
1153                         break;
1154                 dbgarg(cmd, "type=%s\n", prt_names(i, v4l2_type_names));
1155                 ret=vfd->vidioc_streamon(file, fh,i);
1156                 break;
1157         }
1158         case VIDIOC_STREAMOFF:
1159         {
1160                 enum v4l2_buf_type i = *(int *)arg;
1161
1162                 if (!vfd->vidioc_streamoff)
1163                         break;
1164                 dbgarg(cmd, "type=%s\n", prt_names(i, v4l2_type_names));
1165                 ret=vfd->vidioc_streamoff(file, fh, i);
1166                 break;
1167         }
1168         /* ---------- tv norms ---------- */
1169         case VIDIOC_ENUMSTD:
1170         {
1171                 struct v4l2_standard *p = arg;
1172                 v4l2_std_id id = vfd->tvnorms, curr_id = 0;
1173                 unsigned int index = p->index, i, j = 0;
1174                 const char *descr = "";
1175
1176                 /* Return norm array in a canonical way */
1177                 for (i = 0; i <= index && id; i++) {
1178                         /* last std value in the standards array is 0, so this
1179                            while always ends there since (id & 0) == 0. */
1180                         while ((id & standards[j].std) != standards[j].std)
1181                                 j++;
1182                         curr_id = standards[j].std;
1183                         descr = standards[j].descr;
1184                         j++;
1185                         if (curr_id == 0)
1186                                 break;
1187                         if (curr_id != V4L2_STD_PAL &&
1188                             curr_id != V4L2_STD_SECAM &&
1189                             curr_id != V4L2_STD_NTSC)
1190                                 id &= ~curr_id;
1191                 }
1192                 if (i <= index)
1193                         return -EINVAL;
1194
1195                 v4l2_video_std_construct(p, curr_id, descr);
1196                 p->index = index;
1197
1198                 dbgarg(cmd, "index=%d, id=%Ld, name=%s, fps=%d/%d, "
1199                                 "framelines=%d\n", p->index,
1200                                 (unsigned long long)p->id, p->name,
1201                                 p->frameperiod.numerator,
1202                                 p->frameperiod.denominator,
1203                                 p->framelines);
1204
1205                 ret = 0;
1206                 break;
1207         }
1208         case VIDIOC_G_STD:
1209         {
1210                 v4l2_std_id *id = arg;
1211
1212                 *id = vfd->current_norm;
1213
1214                 dbgarg (cmd, "value=%08Lx\n", (long long unsigned) *id);
1215
1216                 ret=0;
1217                 break;
1218         }
1219         case VIDIOC_S_STD:
1220         {
1221                 v4l2_std_id *id = arg,norm;
1222
1223                 dbgarg (cmd, "value=%08Lx\n", (long long unsigned) *id);
1224
1225                 norm = (*id) & vfd->tvnorms;
1226                 if ( vfd->tvnorms && !norm)     /* Check if std is supported */
1227                         break;
1228
1229                 /* Calls the specific handler */
1230                 if (vfd->vidioc_s_std)
1231                         ret=vfd->vidioc_s_std(file, fh, &norm);
1232                 else
1233                         ret=-EINVAL;
1234
1235                 /* Updates standard information */
1236                 if (ret>=0)
1237                         vfd->current_norm=norm;
1238
1239                 break;
1240         }
1241         case VIDIOC_QUERYSTD:
1242         {
1243                 v4l2_std_id *p=arg;
1244
1245                 if (!vfd->vidioc_querystd)
1246                         break;
1247                 ret=vfd->vidioc_querystd(file, fh, arg);
1248                 if (!ret)
1249                         dbgarg (cmd, "detected std=%08Lx\n",
1250                                                 (unsigned long long)*p);
1251                 break;
1252         }
1253         /* ------ input switching ---------- */
1254         /* FIXME: Inputs can be handled inside videodev2 */
1255         case VIDIOC_ENUMINPUT:
1256         {
1257                 struct v4l2_input *p=arg;
1258                 int i=p->index;
1259
1260                 if (!vfd->vidioc_enum_input)
1261                         break;
1262                 memset(p, 0, sizeof(*p));
1263                 p->index=i;
1264
1265                 ret=vfd->vidioc_enum_input(file, fh, p);
1266                 if (!ret)
1267                         dbgarg (cmd, "index=%d, name=%s, type=%d, "
1268                                         "audioset=%d, "
1269                                         "tuner=%d, std=%08Lx, status=%d\n",
1270                                         p->index,p->name,p->type,p->audioset,
1271                                         p->tuner,
1272                                         (unsigned long long)p->std,
1273                                         p->status);
1274                 break;
1275         }
1276         case VIDIOC_G_INPUT:
1277         {
1278                 unsigned int *i = arg;
1279
1280                 if (!vfd->vidioc_g_input)
1281                         break;
1282                 ret=vfd->vidioc_g_input(file, fh, i);
1283                 if (!ret)
1284                         dbgarg (cmd, "value=%d\n",*i);
1285                 break;
1286         }
1287         case VIDIOC_S_INPUT:
1288         {
1289                 unsigned int *i = arg;
1290
1291                 if (!vfd->vidioc_s_input)
1292                         break;
1293                 dbgarg (cmd, "value=%d\n",*i);
1294                 ret=vfd->vidioc_s_input(file, fh, *i);
1295                 break;
1296         }
1297
1298         /* ------ output switching ---------- */
1299         case VIDIOC_G_OUTPUT:
1300         {
1301                 unsigned int *i = arg;
1302
1303                 if (!vfd->vidioc_g_output)
1304                         break;
1305                 ret=vfd->vidioc_g_output(file, fh, i);
1306                 if (!ret)
1307                         dbgarg (cmd, "value=%d\n",*i);
1308                 break;
1309         }
1310         case VIDIOC_S_OUTPUT:
1311         {
1312                 unsigned int *i = arg;
1313
1314                 if (!vfd->vidioc_s_output)
1315                         break;
1316                 dbgarg (cmd, "value=%d\n",*i);
1317                 ret=vfd->vidioc_s_output(file, fh, *i);
1318                 break;
1319         }
1320
1321         /* --- controls ---------------------------------------------- */
1322         case VIDIOC_QUERYCTRL:
1323         {
1324                 struct v4l2_queryctrl *p=arg;
1325
1326                 if (!vfd->vidioc_queryctrl)
1327                         break;
1328                 ret=vfd->vidioc_queryctrl(file, fh, p);
1329
1330                 if (!ret)
1331                         dbgarg (cmd, "id=%d, type=%d, name=%s, "
1332                                         "min/max=%d/%d,"
1333                                         " step=%d, default=%d, flags=0x%08x\n",
1334                                         p->id,p->type,p->name,p->minimum,
1335                                         p->maximum,p->step,p->default_value,
1336                                         p->flags);
1337                 break;
1338         }
1339         case VIDIOC_G_CTRL:
1340         {
1341                 struct v4l2_control *p = arg;
1342
1343                 if (!vfd->vidioc_g_ctrl)
1344                         break;
1345                 dbgarg(cmd, "Enum for index=%d\n", p->id);
1346
1347                 ret=vfd->vidioc_g_ctrl(file, fh, p);
1348                 if (!ret)
1349                         dbgarg2 ( "id=%d, value=%d\n", p->id, p->value);
1350                 break;
1351         }
1352         case VIDIOC_S_CTRL:
1353         {
1354                 struct v4l2_control *p = arg;
1355
1356                 if (!vfd->vidioc_s_ctrl)
1357                         break;
1358                 dbgarg (cmd, "id=%d, value=%d\n", p->id, p->value);
1359
1360                 ret=vfd->vidioc_s_ctrl(file, fh, p);
1361                 break;
1362         }
1363         case VIDIOC_G_EXT_CTRLS:
1364         {
1365                 struct v4l2_ext_controls *p = arg;
1366
1367                 if (vfd->vidioc_g_ext_ctrls) {
1368                         dbgarg(cmd, "count=%d\n", p->count);
1369
1370                         ret=vfd->vidioc_g_ext_ctrls(file, fh, p);
1371                 }
1372                 break;
1373         }
1374         case VIDIOC_S_EXT_CTRLS:
1375         {
1376                 struct v4l2_ext_controls *p = arg;
1377
1378                 if (vfd->vidioc_s_ext_ctrls) {
1379                         dbgarg(cmd, "count=%d\n", p->count);
1380
1381                         ret=vfd->vidioc_s_ext_ctrls(file, fh, p);
1382                 }
1383                 break;
1384         }
1385         case VIDIOC_TRY_EXT_CTRLS:
1386         {
1387                 struct v4l2_ext_controls *p = arg;
1388
1389                 if (vfd->vidioc_try_ext_ctrls) {
1390                         dbgarg(cmd, "count=%d\n", p->count);
1391
1392                         ret=vfd->vidioc_try_ext_ctrls(file, fh, p);
1393                 }
1394                 break;
1395         }
1396         case VIDIOC_QUERYMENU:
1397         {
1398                 struct v4l2_querymenu *p=arg;
1399                 if (!vfd->vidioc_querymenu)
1400                         break;
1401                 ret=vfd->vidioc_querymenu(file, fh, p);
1402                 if (!ret)
1403                         dbgarg (cmd, "id=%d, index=%d, name=%s\n",
1404                                                 p->id,p->index,p->name);
1405                 break;
1406         }
1407         /* --- audio ---------------------------------------------- */
1408         case VIDIOC_ENUMAUDIO:
1409         {
1410                 struct v4l2_audio *p=arg;
1411
1412                 if (!vfd->vidioc_enumaudio)
1413                         break;
1414                 dbgarg(cmd, "Enum for index=%d\n", p->index);
1415                 ret=vfd->vidioc_enumaudio(file, fh, p);
1416                 if (!ret)
1417                         dbgarg2("index=%d, name=%s, capability=%d, "
1418                                         "mode=%d\n",p->index,p->name,
1419                                         p->capability, p->mode);
1420                 break;
1421         }
1422         case VIDIOC_G_AUDIO:
1423         {
1424                 struct v4l2_audio *p=arg;
1425                 __u32 index=p->index;
1426
1427                 if (!vfd->vidioc_g_audio)
1428                         break;
1429
1430                 memset(p,0,sizeof(*p));
1431                 p->index=index;
1432                 dbgarg(cmd, "Get for index=%d\n", p->index);
1433                 ret=vfd->vidioc_g_audio(file, fh, p);
1434                 if (!ret)
1435                         dbgarg2("index=%d, name=%s, capability=%d, "
1436                                         "mode=%d\n",p->index,
1437                                         p->name,p->capability, p->mode);
1438                 break;
1439         }
1440         case VIDIOC_S_AUDIO:
1441         {
1442                 struct v4l2_audio *p=arg;
1443
1444                 if (!vfd->vidioc_s_audio)
1445                         break;
1446                 dbgarg(cmd, "index=%d, name=%s, capability=%d, "
1447                                         "mode=%d\n", p->index, p->name,
1448                                         p->capability, p->mode);
1449                 ret=vfd->vidioc_s_audio(file, fh, p);
1450                 break;
1451         }
1452         case VIDIOC_ENUMAUDOUT:
1453         {
1454                 struct v4l2_audioout *p=arg;
1455
1456                 if (!vfd->vidioc_enumaudout)
1457                         break;
1458                 dbgarg(cmd, "Enum for index=%d\n", p->index);
1459                 ret=vfd->vidioc_enumaudout(file, fh, p);
1460                 if (!ret)
1461                         dbgarg2("index=%d, name=%s, capability=%d, "
1462                                         "mode=%d\n", p->index, p->name,
1463                                         p->capability,p->mode);
1464                 break;
1465         }
1466         case VIDIOC_G_AUDOUT:
1467         {
1468                 struct v4l2_audioout *p=arg;
1469
1470                 if (!vfd->vidioc_g_audout)
1471                         break;
1472                 dbgarg(cmd, "Enum for index=%d\n", p->index);
1473                 ret=vfd->vidioc_g_audout(file, fh, p);
1474                 if (!ret)
1475                         dbgarg2("index=%d, name=%s, capability=%d, "
1476                                         "mode=%d\n", p->index, p->name,
1477                                         p->capability,p->mode);
1478                 break;
1479         }
1480         case VIDIOC_S_AUDOUT:
1481         {
1482                 struct v4l2_audioout *p=arg;
1483
1484                 if (!vfd->vidioc_s_audout)
1485                         break;
1486                 dbgarg(cmd, "index=%d, name=%s, capability=%d, "
1487                                         "mode=%d\n", p->index, p->name,
1488                                         p->capability,p->mode);
1489
1490                 ret=vfd->vidioc_s_audout(file, fh, p);
1491                 break;
1492         }
1493         case VIDIOC_G_MODULATOR:
1494         {
1495                 struct v4l2_modulator *p=arg;
1496                 if (!vfd->vidioc_g_modulator)
1497                         break;
1498                 ret=vfd->vidioc_g_modulator(file, fh, p);
1499                 if (!ret)
1500                         dbgarg(cmd, "index=%d, name=%s, "
1501                                         "capability=%d, rangelow=%d,"
1502                                         " rangehigh=%d, txsubchans=%d\n",
1503                                         p->index, p->name,p->capability,
1504                                         p->rangelow, p->rangehigh,
1505                                         p->txsubchans);
1506                 break;
1507         }
1508         case VIDIOC_S_MODULATOR:
1509         {
1510                 struct v4l2_modulator *p=arg;
1511                 if (!vfd->vidioc_s_modulator)
1512                         break;
1513                 dbgarg(cmd, "index=%d, name=%s, capability=%d, "
1514                                 "rangelow=%d, rangehigh=%d, txsubchans=%d\n",
1515                                 p->index, p->name,p->capability,p->rangelow,
1516                                 p->rangehigh,p->txsubchans);
1517                         ret=vfd->vidioc_s_modulator(file, fh, p);
1518                 break;
1519         }
1520         case VIDIOC_G_CROP:
1521         {
1522                 struct v4l2_crop *p=arg;
1523                 if (!vfd->vidioc_g_crop)
1524                         break;
1525                 ret=vfd->vidioc_g_crop(file, fh, p);
1526                 if (!ret) {
1527                         dbgarg(cmd, "type=%d\n", p->type);
1528                         dbgrect(vfd, "", &p->c);
1529                 }
1530                 break;
1531         }
1532         case VIDIOC_S_CROP:
1533         {
1534                 struct v4l2_crop *p=arg;
1535                 if (!vfd->vidioc_s_crop)
1536                         break;
1537                 dbgarg(cmd, "type=%d\n", p->type);
1538                 dbgrect(vfd, "", &p->c);
1539                 ret=vfd->vidioc_s_crop(file, fh, p);
1540                 break;
1541         }
1542         case VIDIOC_CROPCAP:
1543         {
1544                 struct v4l2_cropcap *p=arg;
1545                 /*FIXME: Should also show v4l2_fract pixelaspect */
1546                 if (!vfd->vidioc_cropcap)
1547                         break;
1548                 dbgarg(cmd, "type=%d\n", p->type);
1549                 dbgrect(vfd, "bounds ", &p->bounds);
1550                 dbgrect(vfd, "defrect ", &p->defrect);
1551                 ret=vfd->vidioc_cropcap(file, fh, p);
1552                 break;
1553         }
1554         case VIDIOC_G_JPEGCOMP:
1555         {
1556                 struct v4l2_jpegcompression *p=arg;
1557                 if (!vfd->vidioc_g_jpegcomp)
1558                         break;
1559                 ret=vfd->vidioc_g_jpegcomp(file, fh, p);
1560                 if (!ret)
1561                         dbgarg (cmd, "quality=%d, APPn=%d, "
1562                                                 "APP_len=%d, COM_len=%d, "
1563                                                 "jpeg_markers=%d\n",
1564                                                 p->quality,p->APPn,p->APP_len,
1565                                                 p->COM_len,p->jpeg_markers);
1566                 break;
1567         }
1568         case VIDIOC_S_JPEGCOMP:
1569         {
1570                 struct v4l2_jpegcompression *p=arg;
1571                 if (!vfd->vidioc_g_jpegcomp)
1572                         break;
1573                 dbgarg (cmd, "quality=%d, APPn=%d, APP_len=%d, "
1574                                         "COM_len=%d, jpeg_markers=%d\n",
1575                                         p->quality,p->APPn,p->APP_len,
1576                                         p->COM_len,p->jpeg_markers);
1577                         ret=vfd->vidioc_s_jpegcomp(file, fh, p);
1578                 break;
1579         }
1580         case VIDIOC_G_ENC_INDEX:
1581         {
1582                 struct v4l2_enc_idx *p=arg;
1583
1584                 if (!vfd->vidioc_g_enc_index)
1585                         break;
1586                 ret=vfd->vidioc_g_enc_index(file, fh, p);
1587                 if (!ret)
1588                         dbgarg (cmd, "entries=%d, entries_cap=%d\n",
1589                                         p->entries,p->entries_cap);
1590                 break;
1591         }
1592         case VIDIOC_ENCODER_CMD:
1593         {
1594                 struct v4l2_encoder_cmd *p=arg;
1595
1596                 if (!vfd->vidioc_encoder_cmd)
1597                         break;
1598                 ret=vfd->vidioc_encoder_cmd(file, fh, p);
1599                 if (!ret)
1600                         dbgarg (cmd, "cmd=%d, flags=%d\n",
1601                                         p->cmd,p->flags);
1602                 break;
1603         }
1604         case VIDIOC_TRY_ENCODER_CMD:
1605         {
1606                 struct v4l2_encoder_cmd *p=arg;
1607
1608                 if (!vfd->vidioc_try_encoder_cmd)
1609                         break;
1610                 ret=vfd->vidioc_try_encoder_cmd(file, fh, p);
1611                 if (!ret)
1612                         dbgarg (cmd, "cmd=%d, flags=%d\n",
1613                                         p->cmd,p->flags);
1614                 break;
1615         }
1616         case VIDIOC_G_PARM:
1617         {
1618                 struct v4l2_streamparm *p=arg;
1619                 __u32 type=p->type;
1620
1621                 memset(p,0,sizeof(*p));
1622                 p->type=type;
1623
1624                 if (vfd->vidioc_g_parm) {
1625                         ret=vfd->vidioc_g_parm(file, fh, p);
1626                 } else {
1627                         struct v4l2_standard s;
1628
1629                         if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1630                                 return -EINVAL;
1631
1632                         v4l2_video_std_construct(&s, vfd->current_norm,
1633                                                  v4l2_norm_to_name(vfd->current_norm));
1634
1635                         p->parm.capture.timeperframe = s.frameperiod;
1636                         ret=0;
1637                 }
1638
1639                 dbgarg (cmd, "type=%d\n", p->type);
1640                 break;
1641         }
1642         case VIDIOC_S_PARM:
1643         {
1644                 struct v4l2_streamparm *p=arg;
1645                 if (!vfd->vidioc_s_parm)
1646                         break;
1647                 dbgarg (cmd, "type=%d\n", p->type);
1648                 ret=vfd->vidioc_s_parm(file, fh, p);
1649                 break;
1650         }
1651         case VIDIOC_G_TUNER:
1652         {
1653                 struct v4l2_tuner *p=arg;
1654                 __u32 index=p->index;
1655
1656                 if (!vfd->vidioc_g_tuner)
1657                         break;
1658
1659                 memset(p,0,sizeof(*p));
1660                 p->index=index;
1661
1662                 ret=vfd->vidioc_g_tuner(file, fh, p);
1663                 if (!ret)
1664                         dbgarg (cmd, "index=%d, name=%s, type=%d, "
1665                                         "capability=%d, rangelow=%d, "
1666                                         "rangehigh=%d, signal=%d, afc=%d, "
1667                                         "rxsubchans=%d, audmode=%d\n",
1668                                         p->index, p->name, p->type,
1669                                         p->capability, p->rangelow,
1670                                         p->rangehigh, p->rxsubchans,
1671                                         p->audmode, p->signal, p->afc);
1672                 break;
1673         }
1674         case VIDIOC_S_TUNER:
1675         {
1676                 struct v4l2_tuner *p=arg;
1677                 if (!vfd->vidioc_s_tuner)
1678                         break;
1679                 dbgarg (cmd, "index=%d, name=%s, type=%d, "
1680                                 "capability=%d, rangelow=%d, rangehigh=%d, "
1681                                 "signal=%d, afc=%d, rxsubchans=%d, "
1682                                 "audmode=%d\n",p->index, p->name, p->type,
1683                                 p->capability, p->rangelow,p->rangehigh,
1684                                 p->rxsubchans, p->audmode, p->signal,
1685                                 p->afc);
1686                 ret=vfd->vidioc_s_tuner(file, fh, p);
1687                 break;
1688         }
1689         case VIDIOC_G_FREQUENCY:
1690         {
1691                 struct v4l2_frequency *p=arg;
1692                 if (!vfd->vidioc_g_frequency)
1693                         break;
1694
1695                 memset(p,0,sizeof(*p));
1696
1697                 ret=vfd->vidioc_g_frequency(file, fh, p);
1698                 if (!ret)
1699                         dbgarg (cmd, "tuner=%d, type=%d, frequency=%d\n",
1700                                                 p->tuner,p->type,p->frequency);
1701                 break;
1702         }
1703         case VIDIOC_S_FREQUENCY:
1704         {
1705                 struct v4l2_frequency *p=arg;
1706                 if (!vfd->vidioc_s_frequency)
1707                         break;
1708                 dbgarg (cmd, "tuner=%d, type=%d, frequency=%d\n",
1709                                 p->tuner,p->type,p->frequency);
1710                 ret=vfd->vidioc_s_frequency(file, fh, p);
1711                 break;
1712         }
1713         case VIDIOC_G_SLICED_VBI_CAP:
1714         {
1715                 struct v4l2_sliced_vbi_cap *p=arg;
1716                 if (!vfd->vidioc_g_sliced_vbi_cap)
1717                         break;
1718                 ret=vfd->vidioc_g_sliced_vbi_cap(file, fh, p);
1719                 if (!ret)
1720                         dbgarg (cmd, "service_set=%d\n", p->service_set);
1721                 break;
1722         }
1723         case VIDIOC_LOG_STATUS:
1724         {
1725                 if (!vfd->vidioc_log_status)
1726                         break;
1727                 ret=vfd->vidioc_log_status(file, fh);
1728                 break;
1729         }
1730 #ifdef CONFIG_VIDEO_ADV_DEBUG
1731         case VIDIOC_DBG_G_REGISTER:
1732         {
1733                 struct v4l2_register *p=arg;
1734                 if (!capable(CAP_SYS_ADMIN))
1735                         ret=-EPERM;
1736                 else if (vfd->vidioc_g_register)
1737                         ret=vfd->vidioc_g_register(file, fh, p);
1738                 break;
1739         }
1740         case VIDIOC_DBG_S_REGISTER:
1741         {
1742                 struct v4l2_register *p=arg;
1743                 if (!capable(CAP_SYS_ADMIN))
1744                         ret=-EPERM;
1745                 else if (vfd->vidioc_s_register)
1746                         ret=vfd->vidioc_s_register(file, fh, p);
1747                 break;
1748         }
1749 #endif
1750         case VIDIOC_G_CHIP_IDENT:
1751         {
1752                 struct v4l2_chip_ident *p=arg;
1753                 if (!vfd->vidioc_g_chip_ident)
1754                         break;
1755                 ret=vfd->vidioc_g_chip_ident(file, fh, p);
1756                 if (!ret)
1757                         dbgarg (cmd, "chip_ident=%u, revision=0x%x\n", p->ident, p->revision);
1758                 break;
1759         }
1760         default:
1761         {
1762                 if (!vfd->vidioc_default)
1763                         break;
1764                 ret = vfd->vidioc_default(file, fh, cmd, arg);
1765                 break;
1766         }
1767         case VIDIOC_S_HW_FREQ_SEEK:
1768         {
1769                 struct v4l2_hw_freq_seek *p = arg;
1770                 if (!vfd->vidioc_s_hw_freq_seek)
1771                         break;
1772                 dbgarg(cmd,
1773                         "tuner=%d, type=%d, seek_upward=%d, wrap_around=%d\n",
1774                         p->tuner, p->type, p->seek_upward, p->wrap_around);
1775                 ret = vfd->vidioc_s_hw_freq_seek(file, fh, p);
1776                 break;
1777         }
1778         } /* switch */
1779
1780         if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) {
1781                 if (ret<0) {
1782                         printk("%s: err: on ", vfd->name);
1783                         v4l_print_ioctl(vfd->name, cmd);
1784                         printk("\n");
1785                 }
1786         }
1787
1788         return ret;
1789 }
1790
1791 int video_ioctl2 (struct inode *inode, struct file *file,
1792                unsigned int cmd, unsigned long arg)
1793 {
1794         char    sbuf[128];
1795         void    *mbuf = NULL;
1796         void    *parg = NULL;
1797         int     err  = -EINVAL;
1798         int     is_ext_ctrl;
1799         size_t  ctrls_size = 0;
1800         void __user *user_ptr = NULL;
1801
1802 #ifdef __OLD_VIDIOC_
1803         cmd = video_fix_command(cmd);
1804 #endif
1805         is_ext_ctrl = (cmd == VIDIOC_S_EXT_CTRLS || cmd == VIDIOC_G_EXT_CTRLS ||
1806                        cmd == VIDIOC_TRY_EXT_CTRLS);
1807
1808         /*  Copy arguments into temp kernel buffer  */
1809         switch (_IOC_DIR(cmd)) {
1810         case _IOC_NONE:
1811                 parg = NULL;
1812                 break;
1813         case _IOC_READ:
1814         case _IOC_WRITE:
1815         case (_IOC_WRITE | _IOC_READ):
1816                 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
1817                         parg = sbuf;
1818                 } else {
1819                         /* too big to allocate from stack */
1820                         mbuf = kmalloc(_IOC_SIZE(cmd),GFP_KERNEL);
1821                         if (NULL == mbuf)
1822                                 return -ENOMEM;
1823                         parg = mbuf;
1824                 }
1825
1826                 err = -EFAULT;
1827                 if (_IOC_DIR(cmd) & _IOC_WRITE)
1828                         if (copy_from_user(parg, (void __user *)arg, _IOC_SIZE(cmd)))
1829                                 goto out;
1830                 break;
1831         }
1832
1833         if (is_ext_ctrl) {
1834                 struct v4l2_ext_controls *p = parg;
1835
1836                 /* In case of an error, tell the caller that it wasn't
1837                    a specific control that caused it. */
1838                 p->error_idx = p->count;
1839                 user_ptr = (void __user *)p->controls;
1840                 if (p->count) {
1841                         ctrls_size = sizeof(struct v4l2_ext_control) * p->count;
1842                         /* Note: v4l2_ext_controls fits in sbuf[] so mbuf is still NULL. */
1843                         mbuf = kmalloc(ctrls_size, GFP_KERNEL);
1844                         err = -ENOMEM;
1845                         if (NULL == mbuf)
1846                                 goto out_ext_ctrl;
1847                         err = -EFAULT;
1848                         if (copy_from_user(mbuf, user_ptr, ctrls_size))
1849                                 goto out_ext_ctrl;
1850                         p->controls = mbuf;
1851                 }
1852         }
1853
1854         /* Handles IOCTL */
1855         err = __video_do_ioctl(inode, file, cmd, parg);
1856         if (err == -ENOIOCTLCMD)
1857                 err = -EINVAL;
1858         if (is_ext_ctrl) {
1859                 struct v4l2_ext_controls *p = parg;
1860
1861                 p->controls = (void *)user_ptr;
1862                 if (p->count && err == 0 && copy_to_user(user_ptr, mbuf, ctrls_size))
1863                         err = -EFAULT;
1864                 goto out_ext_ctrl;
1865         }
1866         if (err < 0)
1867                 goto out;
1868
1869 out_ext_ctrl:
1870         /*  Copy results into user buffer  */
1871         switch (_IOC_DIR(cmd))
1872         {
1873         case _IOC_READ:
1874         case (_IOC_WRITE | _IOC_READ):
1875                 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
1876                         err = -EFAULT;
1877                 break;
1878         }
1879
1880 out:
1881         kfree(mbuf);
1882         return err;
1883 }
1884 EXPORT_SYMBOL(video_ioctl2);
1885
1886 static const struct file_operations video_fops;
1887
1888 /**
1889  *      video_register_device - register video4linux devices
1890  *      @vfd:  video device structure we want to register
1891  *      @type: type of device to register
1892  *      @nr:   which device number (0 == /dev/video0, 1 == /dev/video1, ...
1893  *             -1 == first free)
1894  *
1895  *      The registration code assigns minor numbers based on the type
1896  *      requested. -ENFILE is returned in all the device slots for this
1897  *      category are full. If not then the minor field is set and the
1898  *      driver initialize function is called (if non %NULL).
1899  *
1900  *      Zero is returned on success.
1901  *
1902  *      Valid types are
1903  *
1904  *      %VFL_TYPE_GRABBER - A frame grabber
1905  *
1906  *      %VFL_TYPE_VTX - A teletext device
1907  *
1908  *      %VFL_TYPE_VBI - Vertical blank data (undecoded)
1909  *
1910  *      %VFL_TYPE_RADIO - A radio card
1911  */
1912
1913 int video_register_device(struct video_device *vfd, int type, int nr)
1914 {
1915         int i=0;
1916         int base;
1917         int end;
1918         int ret;
1919         char *name_base;
1920
1921         switch(type)
1922         {
1923                 case VFL_TYPE_GRABBER:
1924                         base=MINOR_VFL_TYPE_GRABBER_MIN;
1925                         end=MINOR_VFL_TYPE_GRABBER_MAX+1;
1926                         name_base = "video";
1927                         break;
1928                 case VFL_TYPE_VTX:
1929                         base=MINOR_VFL_TYPE_VTX_MIN;
1930                         end=MINOR_VFL_TYPE_VTX_MAX+1;
1931                         name_base = "vtx";
1932                         break;
1933                 case VFL_TYPE_VBI:
1934                         base=MINOR_VFL_TYPE_VBI_MIN;
1935                         end=MINOR_VFL_TYPE_VBI_MAX+1;
1936                         name_base = "vbi";
1937                         break;
1938                 case VFL_TYPE_RADIO:
1939                         base=MINOR_VFL_TYPE_RADIO_MIN;
1940                         end=MINOR_VFL_TYPE_RADIO_MAX+1;
1941                         name_base = "radio";
1942                         break;
1943                 default:
1944                         printk(KERN_ERR "%s called with unknown type: %d\n",
1945                                __func__, type);
1946                         return -1;
1947         }
1948
1949         /* pick a minor number */
1950         mutex_lock(&videodev_lock);
1951         if (nr >= 0  &&  nr < end-base) {
1952                 /* use the one the driver asked for */
1953                 i = base+nr;
1954                 if (NULL != video_device[i]) {
1955                         mutex_unlock(&videodev_lock);
1956                         return -ENFILE;
1957                 }
1958         } else {
1959                 /* use first free */
1960                 for(i=base;i<end;i++)
1961                         if (NULL == video_device[i])
1962                                 break;
1963                 if (i == end) {
1964                         mutex_unlock(&videodev_lock);
1965                         return -ENFILE;
1966                 }
1967         }
1968         video_device[i]=vfd;
1969         vfd->minor=i;
1970         mutex_unlock(&videodev_lock);
1971         mutex_init(&vfd->lock);
1972
1973         /* sysfs class */
1974         memset(&vfd->class_dev, 0x00, sizeof(vfd->class_dev));
1975         if (vfd->dev)
1976                 vfd->class_dev.parent = vfd->dev;
1977         vfd->class_dev.class       = &video_class;
1978         vfd->class_dev.devt        = MKDEV(VIDEO_MAJOR, vfd->minor);
1979         sprintf(vfd->class_dev.bus_id, "%s%d", name_base, i - base);
1980         ret = device_register(&vfd->class_dev);
1981         if (ret < 0) {
1982                 printk(KERN_ERR "%s: device_register failed\n",
1983                        __func__);
1984                 goto fail_minor;
1985         }
1986
1987 #if 1
1988         /* needed until all drivers are fixed */
1989         if (!vfd->release)
1990                 printk(KERN_WARNING "videodev: \"%s\" has no release callback. "
1991                        "Please fix your driver for proper sysfs support, see "
1992                        "http://lwn.net/Articles/36850/\n", vfd->name);
1993 #endif
1994         return 0;
1995
1996 fail_minor:
1997         mutex_lock(&videodev_lock);
1998         video_device[vfd->minor] = NULL;
1999         vfd->minor = -1;
2000         mutex_unlock(&videodev_lock);
2001         return ret;
2002 }
2003 EXPORT_SYMBOL(video_register_device);
2004
2005 /**
2006  *      video_unregister_device - unregister a video4linux device
2007  *      @vfd: the device to unregister
2008  *
2009  *      This unregisters the passed device and deassigns the minor
2010  *      number. Future open calls will be met with errors.
2011  */
2012
2013 void video_unregister_device(struct video_device *vfd)
2014 {
2015         mutex_lock(&videodev_lock);
2016         if(video_device[vfd->minor]!=vfd)
2017                 panic("videodev: bad unregister");
2018
2019         video_device[vfd->minor]=NULL;
2020         device_unregister(&vfd->class_dev);
2021         mutex_unlock(&videodev_lock);
2022 }
2023 EXPORT_SYMBOL(video_unregister_device);
2024
2025 /*
2026  * Video fs operations
2027  */
2028 static const struct file_operations video_fops=
2029 {
2030         .owner          = THIS_MODULE,
2031         .llseek         = no_llseek,
2032         .open           = video_open,
2033 };
2034
2035 /*
2036  *      Initialise video for linux
2037  */
2038
2039 static int __init videodev_init(void)
2040 {
2041         int ret;
2042
2043         printk(KERN_INFO "Linux video capture interface: v2.00\n");
2044         if (register_chrdev(VIDEO_MAJOR, VIDEO_NAME, &video_fops)) {
2045                 printk(KERN_WARNING "video_dev: unable to get major %d\n", VIDEO_MAJOR);
2046                 return -EIO;
2047         }
2048
2049         ret = class_register(&video_class);
2050         if (ret < 0) {
2051                 unregister_chrdev(VIDEO_MAJOR, VIDEO_NAME);
2052                 printk(KERN_WARNING "video_dev: class_register failed\n");
2053                 return -EIO;
2054         }
2055
2056         return 0;
2057 }
2058
2059 static void __exit videodev_exit(void)
2060 {
2061         class_unregister(&video_class);
2062         unregister_chrdev(VIDEO_MAJOR, VIDEO_NAME);
2063 }
2064
2065 module_init(videodev_init)
2066 module_exit(videodev_exit)
2067
2068 MODULE_AUTHOR("Alan Cox, Mauro Carvalho Chehab <mchehab@infradead.org>");
2069 MODULE_DESCRIPTION("Device registrar for Video4Linux drivers v2");
2070 MODULE_LICENSE("GPL");
2071
2072
2073 /*
2074  * Local variables:
2075  * c-basic-offset: 8
2076  * End:
2077  */