drivers/media/video/v4l2-common.c

   1 /*
   2  *      Video for Linux Two
   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 file replaces the videodev.c file that comes with the
   8  *      regular kernel distribution.
   9  *
  10  *      This program is free software; you can redistribute it and/or
  11  *      modify it under the terms of the GNU General Public License
  12  *      as published by the Free Software Foundation; either version
  13  *      2 of the License, or (at your option) any later version.
  14  *
  15  * Author:      Bill Dirks <bdirks@pacbell.net>
  16  *              based on code by Alan Cox, <alan@cymru.net>
  17  *
  18  */
  19
  20 /*
  21  * Video capture interface for Linux
  22  *
  23  *      A generic video device interface for the LINUX operating system
  24  *      using a set of device structures/vectors for low level operations.
  25  *
  26  *              This program is free software; you can redistribute it and/or
  27  *              modify it under the terms of the GNU General Public License
  28  *              as published by the Free Software Foundation; either version
  29  *              2 of the License, or (at your option) any later version.
  30  *
  31  * Author:      Alan Cox, <alan@redhat.com>
  32  *
  33  * Fixes:
  34  */
  35
  36 /*
  37  * Video4linux 1/2 integration by Justin Schoeman
  38  * <justin@suntiger.ee.up.ac.za>
  39  * 2.4 PROCFS support ported from 2.4 kernels by
  40  *  Iñaki García Etxebarria <garetxe@euskalnet.net>
  41  * Makefile fix by "W. Michael Petullo" <mike@flyn.org>
  42  * 2.4 devfs support ported from 2.4 kernels by
  43  *  Dan Merillat <dan@merillat.org>
  44  * Added Gerd Knorrs v4l1 enhancements (Justin Schoeman)
  45  */
  46
  47 #include <linux/config.h>
  48 #include <linux/module.h>
  49 #include <linux/types.h>
  50 #include <linux/kernel.h>
  51 #include <linux/sched.h>
  52 #include <linux/smp_lock.h>
  53 #include <linux/mm.h>
  54 #include <linux/string.h>
  55 #include <linux/errno.h>
  56 #include <asm/uaccess.h>
  57 #include <asm/system.h>
  58 #include <asm/pgtable.h>
  59 #include <asm/io.h>
  60 #include <asm/div64.h>
  61 #include <linux/video_decoder.h>
  62 #include <media/v4l2-common.h>
  63
  64 #ifdef CONFIG_KMOD
  65 #include <linux/kmod.h>
  66 #endif
  67
  68 #if defined(CONFIG_UST) || defined(CONFIG_UST_MODULE)
  69 #include <linux/ust.h>
  70 #endif
  71
  72
  73 #include <linux/videodev.h>
  74
  75 MODULE_AUTHOR("Bill Dirks, Justin Schoeman, Gerd Knorr");
  76 MODULE_DESCRIPTION("misc helper functions for v4l2 device drivers");
  77 MODULE_LICENSE("GPL");
  78
  79 /*
  80  *
  81  *      V 4 L 2   D R I V E R   H E L P E R   A P I
  82  *
  83  */
  84
  85 /*
  86  *  Video Standard Operations (contributed by Michael Schimek)
  87  */
  88
  89
  90 /* Fill in the fields of a v4l2_standard structure according to the
  91    'id' and 'transmission' parameters.  Returns negative on error.  */
  92 int v4l2_video_std_construct(struct v4l2_standard *vs,
  93                              int id, char *name)
  94 {
  95         u32 index = vs->index;
  96
  97         memset(vs, 0, sizeof(struct v4l2_standard));
  98         vs->index = index;
  99         vs->id    = id;
 100         if (id & V4L2_STD_525_60) {
 101                 vs->frameperiod.numerator = 1001;
 102                 vs->frameperiod.denominator = 30000;
 103                 vs->framelines = 525;
 104         } else {
 105                 vs->frameperiod.numerator = 1;
 106                 vs->frameperiod.denominator = 25;
 107                 vs->framelines = 625;
 108         }
 109         strlcpy(vs->name,name,sizeof(vs->name));
 110         return 0;
 111 }
 112
 113 /* ----------------------------------------------------------------- */
 114 /* priority handling                                                 */
 115
 116 #define V4L2_PRIO_VALID(val) (val == V4L2_PRIORITY_BACKGROUND   || \
 117                               val == V4L2_PRIORITY_INTERACTIVE  || \
 118                               val == V4L2_PRIORITY_RECORD)
 119
 120 int v4l2_prio_init(struct v4l2_prio_state *global)
 121 {
 122         memset(global,0,sizeof(*global));
 123         return 0;
 124 }
 125
 126 int v4l2_prio_change(struct v4l2_prio_state *global, enum v4l2_priority *local,
 127                      enum v4l2_priority new)
 128 {
 129         if (!V4L2_PRIO_VALID(new))
 130                 return -EINVAL;
 131         if (*local == new)
 132                 return 0;
 133
 134         atomic_inc(&global->prios[new]);
 135         if (V4L2_PRIO_VALID(*local))
 136                 atomic_dec(&global->prios[*local]);
 137         *local = new;
 138         return 0;
 139 }
 140
 141 int v4l2_prio_open(struct v4l2_prio_state *global, enum v4l2_priority *local)
 142 {
 143         return v4l2_prio_change(global,local,V4L2_PRIORITY_DEFAULT);
 144 }
 145
 146 int v4l2_prio_close(struct v4l2_prio_state *global, enum v4l2_priority *local)
 147 {
 148         if (V4L2_PRIO_VALID(*local))
 149                 atomic_dec(&global->prios[*local]);
 150         return 0;
 151 }
 152
 153 enum v4l2_priority v4l2_prio_max(struct v4l2_prio_state *global)
 154 {
 155         if (atomic_read(&global->prios[V4L2_PRIORITY_RECORD]) > 0)
 156                 return V4L2_PRIORITY_RECORD;
 157         if (atomic_read(&global->prios[V4L2_PRIORITY_INTERACTIVE]) > 0)
 158                 return V4L2_PRIORITY_INTERACTIVE;
 159         if (atomic_read(&global->prios[V4L2_PRIORITY_BACKGROUND]) > 0)
 160                 return V4L2_PRIORITY_BACKGROUND;
 161         return V4L2_PRIORITY_UNSET;
 162 }
 163
 164 int v4l2_prio_check(struct v4l2_prio_state *global, enum v4l2_priority *local)
 165 {
 166         if (*local < v4l2_prio_max(global))
 167                 return -EBUSY;
 168         return 0;
 169 }
 170
 171
 172 /* ----------------------------------------------------------------- */
 173 /* some arrays for pretty-printing debug messages of enum types      */
 174
 175 char *v4l2_field_names[] = {
 176         [V4L2_FIELD_ANY]        = "any",
 177         [V4L2_FIELD_NONE]       = "none",
 178         [V4L2_FIELD_TOP]        = "top",
 179         [V4L2_FIELD_BOTTOM]     = "bottom",
 180         [V4L2_FIELD_INTERLACED] = "interlaced",
 181         [V4L2_FIELD_SEQ_TB]     = "seq-tb",
 182         [V4L2_FIELD_SEQ_BT]     = "seq-bt",
 183         [V4L2_FIELD_ALTERNATE]  = "alternate",
 184 };
 185
 186 char *v4l2_type_names[] = {
 187         [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "video-cap",
 188         [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "video-over",
 189         [V4L2_BUF_TYPE_VIDEO_OUTPUT]  = "video-out",
 190         [V4L2_BUF_TYPE_VBI_CAPTURE]   = "vbi-cap",
 191         [V4L2_BUF_TYPE_VBI_OUTPUT]    = "vbi-out",
 192 };
 193
 194 static char *v4l2_memory_names[] = {
 195         [V4L2_MEMORY_MMAP]    = "mmap",
 196         [V4L2_MEMORY_USERPTR] = "userptr",
 197         [V4L2_MEMORY_OVERLAY] = "overlay",
 198 };
 199
 200 #define prt_names(a,arr) (((a)>=0)&&((a)<ARRAY_SIZE(arr)))?arr[a]:"unknown"
 201
 202 /* ------------------------------------------------------------------ */
 203 /* debug help functions                                               */
 204
 205 #ifdef HAVE_V4L1
 206 static const char *v4l1_ioctls[] = {
 207         [_IOC_NR(VIDIOCGCAP)]       = "VIDIOCGCAP",
 208         [_IOC_NR(VIDIOCGCHAN)]      = "VIDIOCGCHAN",
 209         [_IOC_NR(VIDIOCSCHAN)]      = "VIDIOCSCHAN",
 210         [_IOC_NR(VIDIOCGTUNER)]     = "VIDIOCGTUNER",
 211         [_IOC_NR(VIDIOCSTUNER)]     = "VIDIOCSTUNER",
 212         [_IOC_NR(VIDIOCGPICT)]      = "VIDIOCGPICT",
 213         [_IOC_NR(VIDIOCSPICT)]      = "VIDIOCSPICT",
 214         [_IOC_NR(VIDIOCCAPTURE)]    = "VIDIOCCAPTURE",
 215         [_IOC_NR(VIDIOCGWIN)]       = "VIDIOCGWIN",
 216         [_IOC_NR(VIDIOCSWIN)]       = "VIDIOCSWIN",
 217         [_IOC_NR(VIDIOCGFBUF)]      = "VIDIOCGFBUF",
 218         [_IOC_NR(VIDIOCSFBUF)]      = "VIDIOCSFBUF",
 219         [_IOC_NR(VIDIOCKEY)]        = "VIDIOCKEY",
 220         [_IOC_NR(VIDIOCGFREQ)]      = "VIDIOCGFREQ",
 221         [_IOC_NR(VIDIOCSFREQ)]      = "VIDIOCSFREQ",
 222         [_IOC_NR(VIDIOCGAUDIO)]     = "VIDIOCGAUDIO",
 223         [_IOC_NR(VIDIOCSAUDIO)]     = "VIDIOCSAUDIO",
 224         [_IOC_NR(VIDIOCSYNC)]       = "VIDIOCSYNC",
 225         [_IOC_NR(VIDIOCMCAPTURE)]   = "VIDIOCMCAPTURE",
 226         [_IOC_NR(VIDIOCGMBUF)]      = "VIDIOCGMBUF",
 227         [_IOC_NR(VIDIOCGUNIT)]      = "VIDIOCGUNIT",
 228         [_IOC_NR(VIDIOCGCAPTURE)]   = "VIDIOCGCAPTURE",
 229         [_IOC_NR(VIDIOCSCAPTURE)]   = "VIDIOCSCAPTURE",
 230         [_IOC_NR(VIDIOCSPLAYMODE)]  = "VIDIOCSPLAYMODE",
 231         [_IOC_NR(VIDIOCSWRITEMODE)] = "VIDIOCSWRITEMODE",
 232         [_IOC_NR(VIDIOCGPLAYINFO)]  = "VIDIOCGPLAYINFO",
 233         [_IOC_NR(VIDIOCSMICROCODE)] = "VIDIOCSMICROCODE",
 234         [_IOC_NR(VIDIOCGVBIFMT)]    = "VIDIOCGVBIFMT",
 235         [_IOC_NR(VIDIOCSVBIFMT)]    = "VIDIOCSVBIFMT"
 236 };
 237 #define V4L1_IOCTLS ARRAY_SIZE(v4l1_ioctls)
 238 #endif
 239
 240 static const char *v4l2_ioctls[] = {
 241         [_IOC_NR(VIDIOC_QUERYCAP)]         = "VIDIOC_QUERYCAP",
 242         [_IOC_NR(VIDIOC_RESERVED)]         = "VIDIOC_RESERVED",
 243         [_IOC_NR(VIDIOC_ENUM_FMT)]         = "VIDIOC_ENUM_FMT",
 244         [_IOC_NR(VIDIOC_G_FMT)]            = "VIDIOC_G_FMT",
 245         [_IOC_NR(VIDIOC_S_FMT)]            = "VIDIOC_S_FMT",
 246         [_IOC_NR(VIDIOC_G_MPEGCOMP)]       = "VIDIOC_G_MPEGCOMP",
 247         [_IOC_NR(VIDIOC_S_MPEGCOMP)]       = "VIDIOC_S_MPEGCOMP",
 248         [_IOC_NR(VIDIOC_REQBUFS)]          = "VIDIOC_REQBUFS",
 249         [_IOC_NR(VIDIOC_QUERYBUF)]         = "VIDIOC_QUERYBUF",
 250         [_IOC_NR(VIDIOC_G_FBUF)]           = "VIDIOC_G_FBUF",
 251         [_IOC_NR(VIDIOC_S_FBUF)]           = "VIDIOC_S_FBUF",
 252         [_IOC_NR(VIDIOC_OVERLAY)]          = "VIDIOC_OVERLAY",
 253         [_IOC_NR(VIDIOC_QBUF)]             = "VIDIOC_QBUF",
 254         [_IOC_NR(VIDIOC_DQBUF)]            = "VIDIOC_DQBUF",
 255         [_IOC_NR(VIDIOC_STREAMON)]         = "VIDIOC_STREAMON",
 256         [_IOC_NR(VIDIOC_STREAMOFF)]        = "VIDIOC_STREAMOFF",
 257         [_IOC_NR(VIDIOC_G_PARM)]           = "VIDIOC_G_PARM",
 258         [_IOC_NR(VIDIOC_S_PARM)]           = "VIDIOC_S_PARM",
 259         [_IOC_NR(VIDIOC_G_STD)]            = "VIDIOC_G_STD",
 260         [_IOC_NR(VIDIOC_S_STD)]            = "VIDIOC_S_STD",
 261         [_IOC_NR(VIDIOC_ENUMSTD)]          = "VIDIOC_ENUMSTD",
 262         [_IOC_NR(VIDIOC_ENUMINPUT)]        = "VIDIOC_ENUMINPUT",
 263         [_IOC_NR(VIDIOC_G_CTRL)]           = "VIDIOC_G_CTRL",
 264         [_IOC_NR(VIDIOC_S_CTRL)]           = "VIDIOC_S_CTRL",
 265         [_IOC_NR(VIDIOC_G_TUNER)]          = "VIDIOC_G_TUNER",
 266         [_IOC_NR(VIDIOC_S_TUNER)]          = "VIDIOC_S_TUNER",
 267         [_IOC_NR(VIDIOC_G_AUDIO)]          = "VIDIOC_G_AUDIO",
 268         [_IOC_NR(VIDIOC_S_AUDIO)]          = "VIDIOC_S_AUDIO",
 269         [_IOC_NR(VIDIOC_QUERYCTRL)]        = "VIDIOC_QUERYCTRL",
 270         [_IOC_NR(VIDIOC_QUERYMENU)]        = "VIDIOC_QUERYMENU",
 271         [_IOC_NR(VIDIOC_G_INPUT)]          = "VIDIOC_G_INPUT",
 272         [_IOC_NR(VIDIOC_S_INPUT)]          = "VIDIOC_S_INPUT",
 273         [_IOC_NR(VIDIOC_G_OUTPUT)]         = "VIDIOC_G_OUTPUT",
 274         [_IOC_NR(VIDIOC_S_OUTPUT)]         = "VIDIOC_S_OUTPUT",
 275         [_IOC_NR(VIDIOC_ENUMOUTPUT)]       = "VIDIOC_ENUMOUTPUT",
 276         [_IOC_NR(VIDIOC_G_AUDOUT)]         = "VIDIOC_G_AUDOUT",
 277         [_IOC_NR(VIDIOC_S_AUDOUT)]         = "VIDIOC_S_AUDOUT",
 278         [_IOC_NR(VIDIOC_G_MODULATOR)]      = "VIDIOC_G_MODULATOR",
 279         [_IOC_NR(VIDIOC_S_MODULATOR)]      = "VIDIOC_S_MODULATOR",
 280         [_IOC_NR(VIDIOC_G_FREQUENCY)]      = "VIDIOC_G_FREQUENCY",
 281         [_IOC_NR(VIDIOC_S_FREQUENCY)]      = "VIDIOC_S_FREQUENCY",
 282         [_IOC_NR(VIDIOC_CROPCAP)]          = "VIDIOC_CROPCAP",
 283         [_IOC_NR(VIDIOC_G_CROP)]           = "VIDIOC_G_CROP",
 284         [_IOC_NR(VIDIOC_S_CROP)]           = "VIDIOC_S_CROP",
 285         [_IOC_NR(VIDIOC_G_JPEGCOMP)]       = "VIDIOC_G_JPEGCOMP",
 286         [_IOC_NR(VIDIOC_S_JPEGCOMP)]       = "VIDIOC_S_JPEGCOMP",
 287         [_IOC_NR(VIDIOC_QUERYSTD)]         = "VIDIOC_QUERYSTD",
 288         [_IOC_NR(VIDIOC_TRY_FMT)]          = "VIDIOC_TRY_FMT",
 289         [_IOC_NR(VIDIOC_ENUMAUDIO)]        = "VIDIOC_ENUMAUDIO",
 290         [_IOC_NR(VIDIOC_ENUMAUDOUT)]       = "VIDIOC_ENUMAUDOUT",
 291         [_IOC_NR(VIDIOC_G_PRIORITY)]       = "VIDIOC_G_PRIORITY",
 292         [_IOC_NR(VIDIOC_S_PRIORITY)]       = "VIDIOC_S_PRIORITY",
 293 #if 1
 294         [_IOC_NR(VIDIOC_G_SLICED_VBI_CAP)] = "VIDIOC_G_SLICED_VBI_CAP",
 295 #endif
 296         [_IOC_NR(VIDIOC_LOG_STATUS)]       = "VIDIOC_LOG_STATUS"
 297 };
 298 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
 299
 300 static const char *v4l2_int_ioctls[] = {
 301 #ifdef HAVE_VIDEO_DECODER
 302         [_IOC_NR(DECODER_GET_CAPABILITIES)]    = "DECODER_GET_CAPABILITIES",
 303         [_IOC_NR(DECODER_GET_STATUS)]          = "DECODER_GET_STATUS",
 304         [_IOC_NR(DECODER_SET_NORM)]            = "DECODER_SET_NORM",
 305         [_IOC_NR(DECODER_SET_INPUT)]           = "DECODER_SET_INPUT",
 306         [_IOC_NR(DECODER_SET_OUTPUT)]          = "DECODER_SET_OUTPUT",
 307         [_IOC_NR(DECODER_ENABLE_OUTPUT)]       = "DECODER_ENABLE_OUTPUT",
 308         [_IOC_NR(DECODER_SET_PICTURE)]         = "DECODER_SET_PICTURE",
 309         [_IOC_NR(DECODER_SET_GPIO)]            = "DECODER_SET_GPIO",
 310         [_IOC_NR(DECODER_INIT)]                = "DECODER_INIT",
 311         [_IOC_NR(DECODER_SET_VBI_BYPASS)]      = "DECODER_SET_VBI_BYPASS",
 312         [_IOC_NR(DECODER_DUMP)]                = "DECODER_DUMP",
 313 #endif
 314         [_IOC_NR(AUDC_SET_RADIO)]              = "AUDC_SET_RADIO",
 315
 316         [_IOC_NR(TUNER_SET_TYPE_ADDR)]         = "TUNER_SET_TYPE_ADDR",
 317         [_IOC_NR(TUNER_SET_STANDBY)]           = "TUNER_SET_STANDBY",
 318         [_IOC_NR(TDA9887_SET_CONFIG)]          = "TDA9887_SET_CONFIG",
 319
 320         [_IOC_NR(VIDIOC_INT_S_TUNER_MODE)]     = "VIDIOC_INT_S_TUNER_MODE",
 321         [_IOC_NR(VIDIOC_INT_S_REGISTER)]       = "VIDIOC_INT_S_REGISTER",
 322         [_IOC_NR(VIDIOC_INT_G_REGISTER)]       = "VIDIOC_INT_G_REGISTER",
 323         [_IOC_NR(VIDIOC_INT_RESET)]            = "VIDIOC_INT_RESET",
 324         [_IOC_NR(VIDIOC_INT_AUDIO_CLOCK_FREQ)] = "VIDIOC_INT_AUDIO_CLOCK_FREQ",
 325         [_IOC_NR(VIDIOC_INT_DECODE_VBI_LINE)]  = "VIDIOC_INT_DECODE_VBI_LINE",
 326         [_IOC_NR(VIDIOC_INT_S_VBI_DATA)]       = "VIDIOC_INT_S_VBI_DATA",
 327         [_IOC_NR(VIDIOC_INT_G_VBI_DATA)]       = "VIDIOC_INT_G_VBI_DATA",
 328         [_IOC_NR(VIDIOC_INT_G_CHIP_IDENT)]     = "VIDIOC_INT_G_CHIP_IDENT",
 329         [_IOC_NR(VIDIOC_INT_I2S_CLOCK_FREQ)]   = "VIDIOC_INT_I2S_CLOCK_FREQ",
 330         [_IOC_NR(VIDIOC_INT_S_STANDBY)]        = "VIDIOC_INT_S_STANDBY",
 331         [_IOC_NR(VIDIOC_INT_S_AUDIO_ROUTING)]  = "VIDIOC_INT_S_AUDIO_ROUTING",
 332         [_IOC_NR(VIDIOC_INT_G_AUDIO_ROUTING)]  = "VIDIOC_INT_G_AUDIO_ROUTING",
 333         [_IOC_NR(VIDIOC_INT_S_VIDEO_ROUTING)]  = "VIDIOC_INT_S_VIDEO_ROUTING",
 334         [_IOC_NR(VIDIOC_INT_G_VIDEO_ROUTING)]  = "VIDIOC_INT_G_VIDEO_ROUTING",
 335         [_IOC_NR(VIDIOC_INT_S_CRYSTAL_FREQ)]   = "VIDIOC_INT_S_CRYSTAL_FREQ"
 336 };
 337 #define V4L2_INT_IOCTLS ARRAY_SIZE(v4l2_int_ioctls)
 338
 339 static void v4l_print_pix_fmt (char *s, struct v4l2_pix_format *fmt)
 340 {
 341         printk ("%s: width=%d, height=%d, format=%d, field=%s, "
 342                 "bytesperline=%d sizeimage=%d, colorspace=%d\n", s,
 343                 fmt->width,fmt->height,fmt->pixelformat,
 344                 prt_names(fmt->field,v4l2_field_names),
 345                 fmt->bytesperline,fmt->sizeimage,fmt->colorspace);
 346 };
 347
 348 /* Common ioctl debug function. This function can be used by
 349    external ioctl messages as well as internal V4L ioctl */
 350 void v4l_printk_ioctl(unsigned int cmd)
 351 {
 352         char *dir;
 353
 354         switch (_IOC_DIR(cmd)) {
 355         case _IOC_NONE:              dir = "--"; break;
 356         case _IOC_READ:              dir = "r-"; break;
 357         case _IOC_WRITE:             dir = "-w"; break;
 358         case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
 359         default:                     dir = "*ERR*"; break;
 360         }
 361         switch (_IOC_TYPE(cmd)) {
 362         case 'd':
 363                 printk("v4l2_int ioctl %s, dir=%s (0x%08x)\n",
 364                        (_IOC_NR(cmd) < V4L2_INT_IOCTLS) ?
 365                        v4l2_int_ioctls[_IOC_NR(cmd)] : "UNKNOWN", dir, cmd);
 366                 break;
 367 #ifdef HAVE_V4L1
 368         case 'v':
 369                 printk("v4l1 ioctl %s, dir=%s (0x%08x)\n",
 370                        (_IOC_NR(cmd) < V4L1_IOCTLS) ?
 371                        v4l1_ioctls[_IOC_NR(cmd)] : "UNKNOWN", dir, cmd);
 372                 break;
 373 #endif
 374         case 'V':
 375                 printk("v4l2 ioctl %s, dir=%s (0x%08x)\n",
 376                        (_IOC_NR(cmd) < V4L2_IOCTLS) ?
 377                        v4l2_ioctls[_IOC_NR(cmd)] : "UNKNOWN", dir, cmd);
 378                 break;
 379
 380         default:
 381                 printk("unknown ioctl '%c', dir=%s, #%d (0x%08x)\n",
 382                        _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
 383         }
 384 }
 385
 386 /* Common ioctl debug function. This function can be used by
 387    external ioctl messages as well as internal V4L ioctl and its
 388    arguments */
 389 void v4l_printk_ioctl_arg(char *s,unsigned int cmd, void *arg)
 390 {
 391         printk(s);
 392         printk(": ");
 393         v4l_printk_ioctl(cmd);
 394         switch (cmd) {
 395         case VIDIOC_INT_G_CHIP_IDENT:
 396         {
 397                 enum v4l2_chip_ident  *p=arg;
 398                 printk ("%s: chip ident=%d\n", s, *p);
 399                 break;
 400         }
 401         case VIDIOC_G_PRIORITY:
 402         case VIDIOC_S_PRIORITY:
 403         {
 404                 enum v4l2_priority *p=arg;
 405                 printk ("%s: priority=%d\n", s, *p);
 406                 break;
 407         }
 408         case VIDIOC_INT_S_TUNER_MODE:
 409         {
 410                 enum v4l2_tuner_type *p=arg;
 411                 printk ("%s: tuner type=%d\n", s, *p);
 412                 break;
 413         }
 414         case DECODER_SET_VBI_BYPASS:
 415         case DECODER_ENABLE_OUTPUT:
 416         case DECODER_GET_STATUS:
 417         case DECODER_SET_OUTPUT:
 418         case DECODER_SET_INPUT:
 419         case DECODER_SET_GPIO:
 420         case DECODER_SET_NORM:
 421         case VIDIOCCAPTURE:
 422         case VIDIOCSYNC:
 423         case VIDIOCSWRITEMODE:
 424         case TUNER_SET_TYPE_ADDR:
 425         case TUNER_SET_STANDBY:
 426         case TDA9887_SET_CONFIG:
 427         case VIDIOC_OVERLAY_OLD:
 428         case VIDIOC_STREAMOFF:
 429         case VIDIOC_G_OUTPUT:
 430         case VIDIOC_S_OUTPUT:
 431         case VIDIOC_STREAMON:
 432         case VIDIOC_G_INPUT:
 433         case VIDIOC_OVERLAY:
 434         case VIDIOC_S_INPUT:
 435         {
 436                 int *p=arg;
 437                 printk ("%s: value=%d\n", s, *p);
 438                 break;
 439         }
 440         case VIDIOC_G_AUDIO:
 441         case VIDIOC_S_AUDIO:
 442         case VIDIOC_ENUMAUDIO:
 443         case VIDIOC_G_AUDIO_OLD:
 444         {
 445                 struct v4l2_audio *p=arg;
 446
 447                 printk ("%s: index=%d, name=%s, capability=%d, mode=%d\n",
 448                         s,p->index, p->name,p->capability, p->mode);
 449                 break;
 450         }
 451         case VIDIOC_G_AUDOUT:
 452         case VIDIOC_S_AUDOUT:
 453         case VIDIOC_ENUMAUDOUT:
 454         case VIDIOC_G_AUDOUT_OLD:
 455         {
 456                 struct v4l2_audioout *p=arg;
 457                 printk ("%s: index=%d, name=%s, capability=%d, mode=%d\n", s,
 458                                 p->index, p->name, p->capability,p->mode);
 459                 break;
 460         }
 461         case VIDIOC_QBUF:
 462         case VIDIOC_DQBUF:
 463         case VIDIOC_QUERYBUF:
 464         {
 465                 struct v4l2_buffer *p=arg;
 466                 struct v4l2_timecode *tc=&p->timecode;
 467                 printk ("%s: %02ld:%02d:%02d.%08ld index=%d, type=%s, "
 468                         "bytesused=%d, flags=0x%08x, "
 469                         "field=%0d, sequence=%d, memory=%s, offset/userptr=0x%08lx\n",
 470                                 s,
 471                                 (p->timestamp.tv_sec/3600),
 472                                 (int)(p->timestamp.tv_sec/60)%60,
 473                                 (int)(p->timestamp.tv_sec%60),
 474                                 p->timestamp.tv_usec,
 475                                 p->index,
 476                                 prt_names(p->type,v4l2_type_names),
 477                                 p->bytesused,p->flags,
 478                                 p->field,p->sequence,
 479                                 prt_names(p->memory,v4l2_memory_names),
 480                                 p->m.userptr);
 481                 printk ("%s: timecode= %02d:%02d:%02d type=%d, "
 482                         "flags=0x%08x, frames=%d, userbits=0x%p\n",
 483                                 s,tc->hours,tc->minutes,tc->seconds,
 484                                 tc->type, tc->flags, tc->frames, tc->userbits);
 485                 break;
 486         }
 487         case VIDIOC_QUERYCAP:
 488         {
 489                 struct v4l2_capability *p=arg;
 490                 printk ("%s: driver=%s, card=%s, bus=%s, version=0x%08x, "
 491                         "capabilities=0x%08x\n", s,
 492                                 p->driver,p->card,p->bus_info,
 493                                 p->version,
 494                                 p->capabilities);
 495                 break;
 496         }
 497         case VIDIOC_G_CTRL:
 498         case VIDIOC_S_CTRL:
 499         case VIDIOC_S_CTRL_OLD:
 500         {
 501                 struct v4l2_control *p=arg;
 502                 printk ("%s: id=%d, value=%d\n", s, p->id, p->value);
 503                 break;
 504         }
 505         case VIDIOC_G_CROP:
 506         case VIDIOC_S_CROP:
 507         {
 508                 struct v4l2_crop *p=arg;
 509                 /*FIXME: Should also show rect structs */
 510                 printk ("%s: type=%d\n", s, p->type);
 511                 break;
 512         }
 513         case VIDIOC_CROPCAP:
 514         case VIDIOC_CROPCAP_OLD:
 515         {
 516                 struct v4l2_cropcap *p=arg;
 517                 /*FIXME: Should also show rect structs */
 518                 printk ("%s: type=%d\n", s, p->type);
 519                 break;
 520         }
 521         case VIDIOC_INT_DECODE_VBI_LINE:
 522         {
 523                 struct v4l2_decode_vbi_line *p=arg;
 524                 printk ("%s: is_second_field=%d, ptr=0x%08lx, line=%d, "
 525                         "type=%d\n", s,
 526                                 p->is_second_field,(unsigned long)p->p,p->line,p->type);
 527                 break;
 528         }
 529         case VIDIOC_ENUM_FMT:
 530         {
 531                 struct v4l2_fmtdesc *p=arg;
 532                 printk ("%s: index=%d, type=%d, flags=%d, description=%s,"
 533                         " pixelformat=%d\n", s,
 534                                 p->index, p->type, p->flags,p->description,
 535                                 p->pixelformat);
 536
 537                 break;
 538         }
 539         case VIDIOC_G_FMT:
 540         case VIDIOC_S_FMT:
 541         case VIDIOC_TRY_FMT:
 542         {
 543                 struct v4l2_format *p=arg;
 544                 printk ("%s: type=%s\n", s,
 545                                 prt_names(p->type,v4l2_type_names));
 546                 switch (p->type) {
 547                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 548                         v4l_print_pix_fmt (s, &p->fmt.pix);
 549                         break;
 550                 default:
 551                         break;
 552                 }
 553         }
 554         case VIDIOC_G_FBUF:
 555         case VIDIOC_S_FBUF:
 556         {
 557                 struct v4l2_framebuffer *p=arg;
 558                 printk ("%s: capability=%d, flags=%d, base=0x%08lx\n", s,
 559                                 p->capability,p->flags, (unsigned long)p->base);
 560                 v4l_print_pix_fmt (s, &p->fmt);
 561                 break;
 562         }
 563         case VIDIOC_G_FREQUENCY:
 564         case VIDIOC_S_FREQUENCY:
 565         {
 566                 struct v4l2_frequency *p=arg;
 567                 printk ("%s: tuner=%d, type=%d, frequency=%d\n", s,
 568                                 p->tuner,p->type,p->frequency);
 569                 break;
 570         }
 571         case VIDIOC_ENUMINPUT:
 572         {
 573                 struct v4l2_input *p=arg;
 574                 printk ("%s: index=%d, name=%s, type=%d, audioset=%d, "
 575                         "tuner=%d, std=%Ld, status=%d\n", s,
 576                                 p->index,p->name,p->type,p->audioset,
 577                                 p->tuner,
 578                                 (unsigned long long)p->std,
 579                                 p->status);
 580                 break;
 581         }
 582         case VIDIOC_G_JPEGCOMP:
 583         case VIDIOC_S_JPEGCOMP:
 584         {
 585                 struct v4l2_jpegcompression *p=arg;
 586                 printk ("%s: quality=%d, APPn=%d, APP_len=%d, COM_len=%d,"
 587                         " jpeg_markers=%d\n", s,
 588                                 p->quality,p->APPn,p->APP_len,
 589                                 p->COM_len,p->jpeg_markers);
 590                 break;
 591         }
 592         case VIDIOC_G_MODULATOR:
 593         case VIDIOC_S_MODULATOR:
 594         {
 595                 struct v4l2_modulator *p=arg;
 596                 printk ("%s: index=%d, name=%s, capability=%d, rangelow=%d,"
 597                         " rangehigh=%d, txsubchans=%d\n", s,
 598                                 p->index, p->name,p->capability,p->rangelow,
 599                                 p->rangehigh,p->txsubchans);
 600                 break;
 601         }
 602         case VIDIOC_G_MPEGCOMP:
 603         case VIDIOC_S_MPEGCOMP:
 604         {
 605                 struct v4l2_mpeg_compression *p=arg;
 606                 /*FIXME: Several fields not shown */
 607                 printk ("%s: ts_pid_pmt=%d, ts_pid_audio=%d, ts_pid_video=%d, "
 608                         "ts_pid_pcr=%d, ps_size=%d, au_sample_rate=%d, "
 609                         "au_pesid=%c, vi_frame_rate=%d, vi_frames_per_gop=%d, "
 610                         "vi_bframes_count=%d, vi_pesid=%c\n", s,
 611                                 p->ts_pid_pmt,p->ts_pid_audio, p->ts_pid_video,
 612                                 p->ts_pid_pcr, p->ps_size, p->au_sample_rate,
 613                                 p->au_pesid, p->vi_frame_rate,
 614                                 p->vi_frames_per_gop, p->vi_bframes_count,
 615                                 p->vi_pesid);
 616                 break;
 617         }
 618         case VIDIOC_ENUMOUTPUT:
 619         {
 620                 struct v4l2_output *p=arg;
 621                 printk ("%s: index=%d, name=%s,type=%d, audioset=%d, "
 622                         "modulator=%d, std=%Ld\n",
 623                                 s,p->index,p->name,p->type,p->audioset,
 624                                 p->modulator,
 625                                 (unsigned long long)p->std);
 626                 break;
 627         }
 628         case VIDIOC_QUERYCTRL:
 629         {
 630                 struct v4l2_queryctrl *p=arg;
 631                 printk ("%s: id=%d, type=%d, name=%s, min/max=%d/%d,"
 632                         " step=%d, default=%d, flags=0x%08x\n", s,
 633                                 p->id,p->type,p->name,p->minimum,p->maximum,
 634                                 p->step,p->default_value,p->flags);
 635                 break;
 636         }
 637         case VIDIOC_QUERYMENU:
 638         {
 639                 struct v4l2_querymenu *p=arg;
 640                 printk ("%s: id=%d, index=%d, name=%s\n", s,
 641                                 p->id,p->index,p->name);
 642                 break;
 643         }
 644         case VIDIOC_INT_G_REGISTER:
 645         case VIDIOC_INT_S_REGISTER:
 646         {
 647                 struct v4l2_register *p=arg;
 648                 printk ("%s: i2c_id=%d, reg=%lu, val=%d\n", s,
 649                                 p->i2c_id,p->reg,p->val);
 650
 651                 break;
 652         }
 653         case VIDIOC_REQBUFS:
 654         {
 655                 struct v4l2_requestbuffers *p=arg;
 656                 printk ("%s: count=%d, type=%s, memory=%s\n", s,
 657                                 p->count,
 658                                 prt_names(p->type,v4l2_type_names),
 659                                 prt_names(p->memory,v4l2_memory_names));
 660                 break;
 661         }
 662         case VIDIOC_INT_S_AUDIO_ROUTING:
 663         case VIDIOC_INT_S_VIDEO_ROUTING:
 664         case VIDIOC_INT_G_AUDIO_ROUTING:
 665         case VIDIOC_INT_G_VIDEO_ROUTING:
 666         {
 667                 struct v4l2_routing  *p=arg;
 668                 printk ("%s: input=0x%x, output=0x%x\n", s, p->input, p->output);
 669                 break;
 670         }
 671         case VIDIOC_INT_S_CRYSTAL_FREQ:
 672         {
 673                 struct v4l2_crystal_freq *p=arg;
 674                 printk ("%s: freq=%u, flags=0x%x\n", s, p->freq, p->flags);
 675                 break;
 676         }
 677         case VIDIOC_G_SLICED_VBI_CAP:
 678         {
 679                 struct v4l2_sliced_vbi_cap *p=arg;
 680                 printk ("%s: service_set=%d\n", s,
 681                                 p->service_set);
 682                 break;
 683         }
 684         case VIDIOC_INT_S_VBI_DATA:
 685         case VIDIOC_INT_G_VBI_DATA:
 686         {
 687                 struct v4l2_sliced_vbi_data  *p=arg;
 688                 printk ("%s: id=%d, field=%d, line=%d\n", s,
 689                                 p->id, p->field, p->line);
 690                 break;
 691         }
 692         case VIDIOC_ENUMSTD:
 693         {
 694                 struct v4l2_standard *p=arg;
 695                 printk ("%s: index=%d, id=%Ld, name=%s, fps=%d/%d, "
 696                         "framelines=%d\n", s, p->index,
 697                                 (unsigned long long)p->id, p->name,
 698                                 p->frameperiod.numerator,
 699                                 p->frameperiod.denominator,
 700                                 p->framelines);
 701
 702                 break;
 703         }
 704         case VIDIOC_G_PARM:
 705         case VIDIOC_S_PARM:
 706         case VIDIOC_S_PARM_OLD:
 707         {
 708                 struct v4l2_streamparm *p=arg;
 709                 printk ("%s: type=%d\n", s, p->type);
 710
 711                 break;
 712         }
 713         case VIDIOC_G_TUNER:
 714         case VIDIOC_S_TUNER:
 715         {
 716                 struct v4l2_tuner *p=arg;
 717                 printk ("%s: index=%d, name=%s, type=%d, capability=%d, "
 718                         "rangelow=%d, rangehigh=%d, signal=%d, afc=%d, "
 719                         "rxsubchans=%d, audmode=%d\n", s,
 720                                 p->index, p->name, p->type,
 721                                 p->capability, p->rangelow,p->rangehigh,
 722                                 p->rxsubchans, p->audmode, p->signal,
 723                                 p->afc);
 724                 break;
 725         }
 726         case VIDIOCGVBIFMT:
 727         case VIDIOCSVBIFMT:
 728         {
 729                 struct vbi_format *p=arg;
 730                 printk ("%s: sampling_rate=%d, samples_per_line=%d, "
 731                         "sample_format=%d, start=%d/%d, count=%d/%d, flags=%d\n", s,
 732                                 p->sampling_rate,p->samples_per_line,
 733                                 p->sample_format,p->start[0],p->start[1],
 734                                 p->count[0],p->count[1],p->flags);
 735                 break;
 736         }
 737         case VIDIOCGAUDIO:
 738         case VIDIOCSAUDIO:
 739         {
 740                 struct video_audio *p=arg;
 741                 printk ("%s: audio=%d, volume=%d, bass=%d, treble=%d, "
 742                         "flags=%d, name=%s, mode=%d, balance=%d, step=%d\n",
 743                                 s,p->audio,p->volume,p->bass, p->treble,
 744                                 p->flags,p->name,p->mode,p->balance,p->step);
 745                 break;
 746         }
 747         case VIDIOCGFBUF:
 748         case VIDIOCSFBUF:
 749         {
 750                 struct video_buffer *p=arg;
 751                 printk ("%s: base=%08lx, height=%d, width=%d, depth=%d, "
 752                         "bytesperline=%d\n", s,
 753                                 (unsigned long) p->base, p->height, p->width,
 754                                 p->depth,p->bytesperline);
 755                 break;
 756         }
 757         case VIDIOCGCAP:
 758         {
 759                 struct video_capability *p=arg;
 760                 printk ("%s: name=%s, type=%d, channels=%d, audios=%d, "
 761                         "maxwidth=%d, maxheight=%d, minwidth=%d, minheight=%d\n",
 762                                 s,p->name,p->type,p->channels,p->audios,
 763                                 p->maxwidth,p->maxheight,p->minwidth,
 764                                 p->minheight);
 765
 766                 break;
 767         }
 768         case VIDIOCGCAPTURE:
 769         case VIDIOCSCAPTURE:
 770         {
 771                 struct video_capture *p=arg;
 772                 printk ("%s: x=%d, y=%d, width=%d, height=%d, decimation=%d,"
 773                         " flags=%d\n", s,
 774                                 p->x, p->y,p->width, p->height,
 775                                 p->decimation,p->flags);
 776                 break;
 777         }
 778         case VIDIOCGCHAN:
 779         case VIDIOCSCHAN:
 780         {
 781                 struct video_channel *p=arg;
 782                 printk ("%s: channel=%d, name=%s, tuners=%d, flags=%d, "
 783                         "type=%d, norm=%d\n", s,
 784                                 p->channel,p->name,p->tuners,
 785                                 p->flags,p->type,p->norm);
 786
 787                 break;
 788         }
 789         case VIDIOCSMICROCODE:
 790         {
 791                 struct video_code *p=arg;
 792                 printk ("%s: loadwhat=%s, datasize=%d\n", s,
 793                                 p->loadwhat,p->datasize);
 794                 break;
 795         }
 796         case DECODER_GET_CAPABILITIES:
 797         {
 798                 struct video_decoder_capability *p=arg;
 799                 printk ("%s: flags=%d, inputs=%d, outputs=%d\n", s,
 800                                 p->flags,p->inputs,p->outputs);
 801                 break;
 802         }
 803         case DECODER_INIT:
 804         {
 805                 struct video_decoder_init *p=arg;
 806                 printk ("%s: len=%c\n", s, p->len);
 807                 break;
 808         }
 809         case VIDIOCGPLAYINFO:
 810         {
 811                 struct video_info *p=arg;
 812                 printk ("%s: frame_count=%d, h_size=%d, v_size=%d, "
 813                         "smpte_timecode=%d, picture_type=%d, "
 814                         "temporal_reference=%d, user_data=%s\n", s,
 815                                 p->frame_count, p->h_size,
 816                                 p->v_size, p->smpte_timecode,
 817                                 p->picture_type, p->temporal_reference,
 818                                 p->user_data);
 819                 break;
 820         }
 821         case VIDIOCKEY:
 822         {
 823                 struct video_key *p=arg;
 824                 printk ("%s: key=%s, flags=%d\n", s,
 825                                 p->key, p->flags);
 826                 break;
 827         }
 828         case VIDIOCGMBUF:
 829         {
 830                 struct video_mbuf *p=arg;
 831                 printk ("%s: size=%d, frames=%d, offsets=0x%08lx\n", s,
 832                                 p->size,
 833                                 p->frames,
 834                                 (unsigned long)p->offsets);
 835                 break;
 836         }
 837         case VIDIOCMCAPTURE:
 838         {
 839                 struct video_mmap *p=arg;
 840                 printk ("%s: frame=%d, height=%d, width=%d, format=%d\n", s,
 841                                 p->frame,
 842                                 p->height, p->width,
 843                                 p->format);
 844                 break;
 845         }
 846         case VIDIOCGPICT:
 847         case VIDIOCSPICT:
 848         case DECODER_SET_PICTURE:
 849         {
 850                 struct video_picture *p=arg;
 851
 852                 printk ("%s: brightness=%d, hue=%d, colour=%d, contrast=%d,"
 853                         " whiteness=%d, depth=%d, palette=%d\n", s,
 854                                 p->brightness, p->hue, p->colour,
 855                                 p->contrast, p->whiteness, p->depth,
 856                                 p->palette);
 857                 break;
 858         }
 859         case VIDIOCSPLAYMODE:
 860         {
 861                 struct video_play_mode *p=arg;
 862                 printk ("%s: mode=%d, p1=%d, p2=%d\n", s,
 863                                 p->mode,p->p1,p->p2);
 864                 break;
 865         }
 866         case VIDIOCGTUNER:
 867         case VIDIOCSTUNER:
 868         {
 869                 struct video_tuner *p=arg;
 870                 printk ("%s: tuner=%d, name=%s, rangelow=%ld, rangehigh=%ld, "
 871                         "flags=%d, mode=%d, signal=%d\n", s,
 872                                 p->tuner, p->name,p->rangelow, p->rangehigh,
 873                                 p->flags,p->mode, p->signal);
 874                 break;
 875         }
 876         case VIDIOCGUNIT:
 877         {
 878                 struct video_unit *p=arg;
 879                 printk ("%s: video=%d, vbi=%d, radio=%d, audio=%d, "
 880                         "teletext=%d\n", s,
 881                                 p->video,p->vbi,p->radio,p->audio,p->teletext);
 882                 break;
 883         }
 884         case VIDIOCGWIN:
 885         case VIDIOCSWIN:
 886         {
 887                 struct video_window *p=arg;
 888                 printk ("%s: x=%d, y=%d, width=%d, height=%d, chromakey=%d,"
 889                         " flags=%d, clipcount=%d\n", s,
 890                                 p->x, p->y,p->width, p->height,
 891                                 p->chromakey,p->flags,
 892                                 p->clipcount);
 893                 break;
 894         }
 895         case VIDIOC_INT_AUDIO_CLOCK_FREQ:
 896         case VIDIOC_INT_I2S_CLOCK_FREQ:
 897         case VIDIOC_INT_S_STANDBY:
 898         {
 899                 u32 *p=arg;
 900
 901                 printk ("%s: value=%d\n", s, *p);
 902                 break;
 903         }
 904         case VIDIOCGFREQ:
 905         case VIDIOCSFREQ:
 906         {
 907                 unsigned long *p=arg;
 908                 printk ("%s: value=%lu\n", s, *p);
 909                 break;
 910         }
 911         case VIDIOC_G_STD:
 912         case VIDIOC_S_STD:
 913         case VIDIOC_QUERYSTD:
 914         {
 915                 v4l2_std_id *p=arg;
 916
 917                 printk ("%s: value=%Lu\n", s, (unsigned long long)*p);
 918                 break;
 919         }
 920         }
 921 }
 922
 923 /* ----------------------------------------------------------------- */
 924
 925 EXPORT_SYMBOL(v4l2_video_std_construct);
 926
 927 EXPORT_SYMBOL(v4l2_prio_init);
 928 EXPORT_SYMBOL(v4l2_prio_change);
 929 EXPORT_SYMBOL(v4l2_prio_open);
 930 EXPORT_SYMBOL(v4l2_prio_close);
 931 EXPORT_SYMBOL(v4l2_prio_max);
 932 EXPORT_SYMBOL(v4l2_prio_check);
 933
 934 EXPORT_SYMBOL(v4l2_field_names);
 935 EXPORT_SYMBOL(v4l2_type_names);
 936 EXPORT_SYMBOL(v4l_printk_ioctl);
 937 EXPORT_SYMBOL(v4l_printk_ioctl_arg);
 938
 939 /*
 940  * Local variables:
 941  * c-basic-offset: 8
 942  * End:
 943  */