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 #define __OLD_VIDIOC_ /* To allow fixing old calls*/
  63 #include <media/v4l2-common.h>
  64
  65 #ifdef CONFIG_KMOD
  66 #include <linux/kmod.h>
  67 #endif
  68
  69 #if defined(CONFIG_UST) || defined(CONFIG_UST_MODULE)
  70 #include <linux/ust.h>
  71 #endif
  72
  73
  74 #include <linux/videodev.h>
  75
  76 MODULE_AUTHOR("Bill Dirks, Justin Schoeman, Gerd Knorr");
  77 MODULE_DESCRIPTION("misc helper functions for v4l2 device drivers");
  78 MODULE_LICENSE("GPL");
  79
  80 /*
  81  *
  82  *      V 4 L 2   D R I V E R   H E L P E R   A P I
  83  *
  84  */
  85
  86 /*
  87  *  Video Standard Operations (contributed by Michael Schimek)
  88  */
  89
  90
  91 /* Fill in the fields of a v4l2_standard structure according to the
  92    'id' and 'transmission' parameters.  Returns negative on error.  */
  93 int v4l2_video_std_construct(struct v4l2_standard *vs,
  94                              int id, char *name)
  95 {
  96         u32 index = vs->index;
  97
  98         memset(vs, 0, sizeof(struct v4l2_standard));
  99         vs->index = index;
 100         vs->id    = id;
 101         if (id & V4L2_STD_525_60) {
 102                 vs->frameperiod.numerator = 1001;
 103                 vs->frameperiod.denominator = 30000;
 104                 vs->framelines = 525;
 105         } else {
 106                 vs->frameperiod.numerator = 1;
 107                 vs->frameperiod.denominator = 25;
 108                 vs->framelines = 625;
 109         }
 110         strlcpy(vs->name,name,sizeof(vs->name));
 111         return 0;
 112 }
 113
 114 /* ----------------------------------------------------------------- */
 115 /* priority handling                                                 */
 116
 117 #define V4L2_PRIO_VALID(val) (val == V4L2_PRIORITY_BACKGROUND   || \
 118                               val == V4L2_PRIORITY_INTERACTIVE  || \
 119                               val == V4L2_PRIORITY_RECORD)
 120
 121 int v4l2_prio_init(struct v4l2_prio_state *global)
 122 {
 123         memset(global,0,sizeof(*global));
 124         return 0;
 125 }
 126
 127 int v4l2_prio_change(struct v4l2_prio_state *global, enum v4l2_priority *local,
 128                      enum v4l2_priority new)
 129 {
 130         if (!V4L2_PRIO_VALID(new))
 131                 return -EINVAL;
 132         if (*local == new)
 133                 return 0;
 134
 135         atomic_inc(&global->prios[new]);
 136         if (V4L2_PRIO_VALID(*local))
 137                 atomic_dec(&global->prios[*local]);
 138         *local = new;
 139         return 0;
 140 }
 141
 142 int v4l2_prio_open(struct v4l2_prio_state *global, enum v4l2_priority *local)
 143 {
 144         return v4l2_prio_change(global,local,V4L2_PRIORITY_DEFAULT);
 145 }
 146
 147 int v4l2_prio_close(struct v4l2_prio_state *global, enum v4l2_priority *local)
 148 {
 149         if (V4L2_PRIO_VALID(*local))
 150                 atomic_dec(&global->prios[*local]);
 151         return 0;
 152 }
 153
 154 enum v4l2_priority v4l2_prio_max(struct v4l2_prio_state *global)
 155 {
 156         if (atomic_read(&global->prios[V4L2_PRIORITY_RECORD]) > 0)
 157                 return V4L2_PRIORITY_RECORD;
 158         if (atomic_read(&global->prios[V4L2_PRIORITY_INTERACTIVE]) > 0)
 159                 return V4L2_PRIORITY_INTERACTIVE;
 160         if (atomic_read(&global->prios[V4L2_PRIORITY_BACKGROUND]) > 0)
 161                 return V4L2_PRIORITY_BACKGROUND;
 162         return V4L2_PRIORITY_UNSET;
 163 }
 164
 165 int v4l2_prio_check(struct v4l2_prio_state *global, enum v4l2_priority *local)
 166 {
 167         if (*local < v4l2_prio_max(global))
 168                 return -EBUSY;
 169         return 0;
 170 }
 171
 172
 173 /* ----------------------------------------------------------------- */
 174 /* some arrays for pretty-printing debug messages of enum types      */
 175
 176 char *v4l2_field_names[] = {
 177         [V4L2_FIELD_ANY]        = "any",
 178         [V4L2_FIELD_NONE]       = "none",
 179         [V4L2_FIELD_TOP]        = "top",
 180         [V4L2_FIELD_BOTTOM]     = "bottom",
 181         [V4L2_FIELD_INTERLACED] = "interlaced",
 182         [V4L2_FIELD_SEQ_TB]     = "seq-tb",
 183         [V4L2_FIELD_SEQ_BT]     = "seq-bt",
 184         [V4L2_FIELD_ALTERNATE]  = "alternate",
 185 };
 186
 187 char *v4l2_type_names[] = {
 188         [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "video-cap",
 189         [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "video-over",
 190         [V4L2_BUF_TYPE_VIDEO_OUTPUT]  = "video-out",
 191         [V4L2_BUF_TYPE_VBI_CAPTURE]   = "vbi-cap",
 192         [V4L2_BUF_TYPE_VBI_OUTPUT]    = "vbi-out",
 193 };
 194
 195 static char *v4l2_memory_names[] = {
 196         [V4L2_MEMORY_MMAP]    = "mmap",
 197         [V4L2_MEMORY_USERPTR] = "userptr",
 198         [V4L2_MEMORY_OVERLAY] = "overlay",
 199 };
 200
 201 #define prt_names(a,arr) (((a)>=0)&&((a)<ARRAY_SIZE(arr)))?arr[a]:"unknown"
 202
 203 /* ------------------------------------------------------------------ */
 204 /* debug help functions                                               */
 205
 206 #ifdef HAVE_V4L1
 207 static const char *v4l1_ioctls[] = {
 208         [_IOC_NR(VIDIOCGCAP)]       = "VIDIOCGCAP",
 209         [_IOC_NR(VIDIOCGCHAN)]      = "VIDIOCGCHAN",
 210         [_IOC_NR(VIDIOCSCHAN)]      = "VIDIOCSCHAN",
 211         [_IOC_NR(VIDIOCGTUNER)]     = "VIDIOCGTUNER",
 212         [_IOC_NR(VIDIOCSTUNER)]     = "VIDIOCSTUNER",
 213         [_IOC_NR(VIDIOCGPICT)]      = "VIDIOCGPICT",
 214         [_IOC_NR(VIDIOCSPICT)]      = "VIDIOCSPICT",
 215         [_IOC_NR(VIDIOCCAPTURE)]    = "VIDIOCCAPTURE",
 216         [_IOC_NR(VIDIOCGWIN)]       = "VIDIOCGWIN",
 217         [_IOC_NR(VIDIOCSWIN)]       = "VIDIOCSWIN",
 218         [_IOC_NR(VIDIOCGFBUF)]      = "VIDIOCGFBUF",
 219         [_IOC_NR(VIDIOCSFBUF)]      = "VIDIOCSFBUF",
 220         [_IOC_NR(VIDIOCKEY)]        = "VIDIOCKEY",
 221         [_IOC_NR(VIDIOCGFREQ)]      = "VIDIOCGFREQ",
 222         [_IOC_NR(VIDIOCSFREQ)]      = "VIDIOCSFREQ",
 223         [_IOC_NR(VIDIOCGAUDIO)]     = "VIDIOCGAUDIO",
 224         [_IOC_NR(VIDIOCSAUDIO)]     = "VIDIOCSAUDIO",
 225         [_IOC_NR(VIDIOCSYNC)]       = "VIDIOCSYNC",
 226         [_IOC_NR(VIDIOCMCAPTURE)]   = "VIDIOCMCAPTURE",
 227         [_IOC_NR(VIDIOCGMBUF)]      = "VIDIOCGMBUF",
 228         [_IOC_NR(VIDIOCGUNIT)]      = "VIDIOCGUNIT",
 229         [_IOC_NR(VIDIOCGCAPTURE)]   = "VIDIOCGCAPTURE",
 230         [_IOC_NR(VIDIOCSCAPTURE)]   = "VIDIOCSCAPTURE",
 231         [_IOC_NR(VIDIOCSPLAYMODE)]  = "VIDIOCSPLAYMODE",
 232         [_IOC_NR(VIDIOCSWRITEMODE)] = "VIDIOCSWRITEMODE",
 233         [_IOC_NR(VIDIOCGPLAYINFO)]  = "VIDIOCGPLAYINFO",
 234         [_IOC_NR(VIDIOCSMICROCODE)] = "VIDIOCSMICROCODE",
 235         [_IOC_NR(VIDIOCGVBIFMT)]    = "VIDIOCGVBIFMT",
 236         [_IOC_NR(VIDIOCSVBIFMT)]    = "VIDIOCSVBIFMT"
 237 };
 238 #define V4L1_IOCTLS ARRAY_SIZE(v4l1_ioctls)
 239 #endif
 240
 241 static const char *v4l2_ioctls[] = {
 242         [_IOC_NR(VIDIOC_QUERYCAP)]         = "VIDIOC_QUERYCAP",
 243         [_IOC_NR(VIDIOC_RESERVED)]         = "VIDIOC_RESERVED",
 244         [_IOC_NR(VIDIOC_ENUM_FMT)]         = "VIDIOC_ENUM_FMT",
 245         [_IOC_NR(VIDIOC_G_FMT)]            = "VIDIOC_G_FMT",
 246         [_IOC_NR(VIDIOC_S_FMT)]            = "VIDIOC_S_FMT",
 247         [_IOC_NR(VIDIOC_G_MPEGCOMP)]       = "VIDIOC_G_MPEGCOMP",
 248         [_IOC_NR(VIDIOC_S_MPEGCOMP)]       = "VIDIOC_S_MPEGCOMP",
 249         [_IOC_NR(VIDIOC_REQBUFS)]          = "VIDIOC_REQBUFS",
 250         [_IOC_NR(VIDIOC_QUERYBUF)]         = "VIDIOC_QUERYBUF",
 251         [_IOC_NR(VIDIOC_G_FBUF)]           = "VIDIOC_G_FBUF",
 252         [_IOC_NR(VIDIOC_S_FBUF)]           = "VIDIOC_S_FBUF",
 253         [_IOC_NR(VIDIOC_OVERLAY)]          = "VIDIOC_OVERLAY",
 254         [_IOC_NR(VIDIOC_QBUF)]             = "VIDIOC_QBUF",
 255         [_IOC_NR(VIDIOC_DQBUF)]            = "VIDIOC_DQBUF",
 256         [_IOC_NR(VIDIOC_STREAMON)]         = "VIDIOC_STREAMON",
 257         [_IOC_NR(VIDIOC_STREAMOFF)]        = "VIDIOC_STREAMOFF",
 258         [_IOC_NR(VIDIOC_G_PARM)]           = "VIDIOC_G_PARM",
 259         [_IOC_NR(VIDIOC_S_PARM)]           = "VIDIOC_S_PARM",
 260         [_IOC_NR(VIDIOC_G_STD)]            = "VIDIOC_G_STD",
 261         [_IOC_NR(VIDIOC_S_STD)]            = "VIDIOC_S_STD",
 262         [_IOC_NR(VIDIOC_ENUMSTD)]          = "VIDIOC_ENUMSTD",
 263         [_IOC_NR(VIDIOC_ENUMINPUT)]        = "VIDIOC_ENUMINPUT",
 264         [_IOC_NR(VIDIOC_G_CTRL)]           = "VIDIOC_G_CTRL",
 265         [_IOC_NR(VIDIOC_S_CTRL)]           = "VIDIOC_S_CTRL",
 266         [_IOC_NR(VIDIOC_G_TUNER)]          = "VIDIOC_G_TUNER",
 267         [_IOC_NR(VIDIOC_S_TUNER)]          = "VIDIOC_S_TUNER",
 268         [_IOC_NR(VIDIOC_G_AUDIO)]          = "VIDIOC_G_AUDIO",
 269         [_IOC_NR(VIDIOC_S_AUDIO)]          = "VIDIOC_S_AUDIO",
 270         [_IOC_NR(VIDIOC_QUERYCTRL)]        = "VIDIOC_QUERYCTRL",
 271         [_IOC_NR(VIDIOC_QUERYMENU)]        = "VIDIOC_QUERYMENU",
 272         [_IOC_NR(VIDIOC_G_INPUT)]          = "VIDIOC_G_INPUT",
 273         [_IOC_NR(VIDIOC_S_INPUT)]          = "VIDIOC_S_INPUT",
 274         [_IOC_NR(VIDIOC_G_OUTPUT)]         = "VIDIOC_G_OUTPUT",
 275         [_IOC_NR(VIDIOC_S_OUTPUT)]         = "VIDIOC_S_OUTPUT",
 276         [_IOC_NR(VIDIOC_ENUMOUTPUT)]       = "VIDIOC_ENUMOUTPUT",
 277         [_IOC_NR(VIDIOC_G_AUDOUT)]         = "VIDIOC_G_AUDOUT",
 278         [_IOC_NR(VIDIOC_S_AUDOUT)]         = "VIDIOC_S_AUDOUT",
 279         [_IOC_NR(VIDIOC_G_MODULATOR)]      = "VIDIOC_G_MODULATOR",
 280         [_IOC_NR(VIDIOC_S_MODULATOR)]      = "VIDIOC_S_MODULATOR",
 281         [_IOC_NR(VIDIOC_G_FREQUENCY)]      = "VIDIOC_G_FREQUENCY",
 282         [_IOC_NR(VIDIOC_S_FREQUENCY)]      = "VIDIOC_S_FREQUENCY",
 283         [_IOC_NR(VIDIOC_CROPCAP)]          = "VIDIOC_CROPCAP",
 284         [_IOC_NR(VIDIOC_G_CROP)]           = "VIDIOC_G_CROP",
 285         [_IOC_NR(VIDIOC_S_CROP)]           = "VIDIOC_S_CROP",
 286         [_IOC_NR(VIDIOC_G_JPEGCOMP)]       = "VIDIOC_G_JPEGCOMP",
 287         [_IOC_NR(VIDIOC_S_JPEGCOMP)]       = "VIDIOC_S_JPEGCOMP",
 288         [_IOC_NR(VIDIOC_QUERYSTD)]         = "VIDIOC_QUERYSTD",
 289         [_IOC_NR(VIDIOC_TRY_FMT)]          = "VIDIOC_TRY_FMT",
 290         [_IOC_NR(VIDIOC_ENUMAUDIO)]        = "VIDIOC_ENUMAUDIO",
 291         [_IOC_NR(VIDIOC_ENUMAUDOUT)]       = "VIDIOC_ENUMAUDOUT",
 292         [_IOC_NR(VIDIOC_G_PRIORITY)]       = "VIDIOC_G_PRIORITY",
 293         [_IOC_NR(VIDIOC_S_PRIORITY)]       = "VIDIOC_S_PRIORITY",
 294 #if 1
 295         [_IOC_NR(VIDIOC_G_SLICED_VBI_CAP)] = "VIDIOC_G_SLICED_VBI_CAP",
 296 #endif
 297         [_IOC_NR(VIDIOC_LOG_STATUS)]       = "VIDIOC_LOG_STATUS"
 298 };
 299 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
 300
 301 static const char *v4l2_int_ioctls[] = {
 302 #ifdef HAVE_VIDEO_DECODER
 303         [_IOC_NR(DECODER_GET_CAPABILITIES)]    = "DECODER_GET_CAPABILITIES",
 304         [_IOC_NR(DECODER_GET_STATUS)]          = "DECODER_GET_STATUS",
 305         [_IOC_NR(DECODER_SET_NORM)]            = "DECODER_SET_NORM",
 306         [_IOC_NR(DECODER_SET_INPUT)]           = "DECODER_SET_INPUT",
 307         [_IOC_NR(DECODER_SET_OUTPUT)]          = "DECODER_SET_OUTPUT",
 308         [_IOC_NR(DECODER_ENABLE_OUTPUT)]       = "DECODER_ENABLE_OUTPUT",
 309         [_IOC_NR(DECODER_SET_PICTURE)]         = "DECODER_SET_PICTURE",
 310         [_IOC_NR(DECODER_SET_GPIO)]            = "DECODER_SET_GPIO",
 311         [_IOC_NR(DECODER_INIT)]                = "DECODER_INIT",
 312         [_IOC_NR(DECODER_SET_VBI_BYPASS)]      = "DECODER_SET_VBI_BYPASS",
 313         [_IOC_NR(DECODER_DUMP)]                = "DECODER_DUMP",
 314 #endif
 315         [_IOC_NR(AUDC_SET_RADIO)]              = "AUDC_SET_RADIO",
 316
 317         [_IOC_NR(TUNER_SET_TYPE_ADDR)]         = "TUNER_SET_TYPE_ADDR",
 318         [_IOC_NR(TUNER_SET_STANDBY)]           = "TUNER_SET_STANDBY",
 319         [_IOC_NR(TDA9887_SET_CONFIG)]          = "TDA9887_SET_CONFIG",
 320
 321         [_IOC_NR(VIDIOC_INT_S_TUNER_MODE)]     = "VIDIOC_INT_S_TUNER_MODE",
 322         [_IOC_NR(VIDIOC_INT_S_REGISTER)]       = "VIDIOC_INT_S_REGISTER",
 323         [_IOC_NR(VIDIOC_INT_G_REGISTER)]       = "VIDIOC_INT_G_REGISTER",
 324         [_IOC_NR(VIDIOC_INT_RESET)]            = "VIDIOC_INT_RESET",
 325         [_IOC_NR(VIDIOC_INT_AUDIO_CLOCK_FREQ)] = "VIDIOC_INT_AUDIO_CLOCK_FREQ",
 326         [_IOC_NR(VIDIOC_INT_DECODE_VBI_LINE)]  = "VIDIOC_INT_DECODE_VBI_LINE",
 327         [_IOC_NR(VIDIOC_INT_S_VBI_DATA)]       = "VIDIOC_INT_S_VBI_DATA",
 328         [_IOC_NR(VIDIOC_INT_G_VBI_DATA)]       = "VIDIOC_INT_G_VBI_DATA",
 329         [_IOC_NR(VIDIOC_INT_G_CHIP_IDENT)]     = "VIDIOC_INT_G_CHIP_IDENT",
 330         [_IOC_NR(VIDIOC_INT_I2S_CLOCK_FREQ)]   = "VIDIOC_INT_I2S_CLOCK_FREQ",
 331         [_IOC_NR(VIDIOC_INT_S_STANDBY)]        = "VIDIOC_INT_S_STANDBY",
 332         [_IOC_NR(VIDIOC_INT_S_AUDIO_ROUTING)]  = "VIDIOC_INT_S_AUDIO_ROUTING",
 333         [_IOC_NR(VIDIOC_INT_G_AUDIO_ROUTING)]  = "VIDIOC_INT_G_AUDIO_ROUTING",
 334         [_IOC_NR(VIDIOC_INT_S_VIDEO_ROUTING)]  = "VIDIOC_INT_S_VIDEO_ROUTING",
 335         [_IOC_NR(VIDIOC_INT_G_VIDEO_ROUTING)]  = "VIDIOC_INT_G_VIDEO_ROUTING",
 336         [_IOC_NR(VIDIOC_INT_S_CRYSTAL_FREQ)]   = "VIDIOC_INT_S_CRYSTAL_FREQ"
 337 };
 338 #define V4L2_INT_IOCTLS ARRAY_SIZE(v4l2_int_ioctls)
 339
 340 static void v4l_print_pix_fmt (char *s, struct v4l2_pix_format *fmt)
 341 {
 342         printk ("%s: width=%d, height=%d, format=%d, field=%s, "
 343                 "bytesperline=%d sizeimage=%d, colorspace=%d\n", s,
 344                 fmt->width,fmt->height,fmt->pixelformat,
 345                 prt_names(fmt->field,v4l2_field_names),
 346                 fmt->bytesperline,fmt->sizeimage,fmt->colorspace);
 347 };
 348
 349 /* Common ioctl debug function. This function can be used by
 350    external ioctl messages as well as internal V4L ioctl */
 351 void v4l_printk_ioctl(unsigned int cmd)
 352 {
 353         char *dir;
 354
 355         switch (_IOC_DIR(cmd)) {
 356         case _IOC_NONE:              dir = "--"; break;
 357         case _IOC_READ:              dir = "r-"; break;
 358         case _IOC_WRITE:             dir = "-w"; break;
 359         case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
 360         default:                     dir = "*ERR*"; break;
 361         }
 362         switch (_IOC_TYPE(cmd)) {
 363         case 'd':
 364                 printk("v4l2_int ioctl %s, dir=%s (0x%08x)\n",
 365                        (_IOC_NR(cmd) < V4L2_INT_IOCTLS) ?
 366                        v4l2_int_ioctls[_IOC_NR(cmd)] : "UNKNOWN", dir, cmd);
 367                 break;
 368 #ifdef HAVE_V4L1
 369         case 'v':
 370                 printk("v4l1 ioctl %s, dir=%s (0x%08x)\n",
 371                        (_IOC_NR(cmd) < V4L1_IOCTLS) ?
 372                        v4l1_ioctls[_IOC_NR(cmd)] : "UNKNOWN", dir, cmd);
 373                 break;
 374 #endif
 375         case 'V':
 376                 printk("v4l2 ioctl %s, dir=%s (0x%08x)\n",
 377                        (_IOC_NR(cmd) < V4L2_IOCTLS) ?
 378                        v4l2_ioctls[_IOC_NR(cmd)] : "UNKNOWN", dir, cmd);
 379                 break;
 380
 381         default:
 382                 printk("unknown ioctl '%c', dir=%s, #%d (0x%08x)\n",
 383                        _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
 384         }
 385 }
 386
 387 /* Common ioctl debug function. This function can be used by
 388    external ioctl messages as well as internal V4L ioctl and its
 389    arguments */
 390 void v4l_printk_ioctl_arg(char *s,unsigned int cmd, void *arg)
 391 {
 392         printk(s);
 393         printk(": ");
 394         v4l_printk_ioctl(cmd);
 395         switch (cmd) {
 396         case VIDIOC_INT_G_CHIP_IDENT:
 397         {
 398                 enum v4l2_chip_ident  *p=arg;
 399                 printk ("%s: chip ident=%d\n", s, *p);
 400                 break;
 401         }
 402         case VIDIOC_G_PRIORITY:
 403         case VIDIOC_S_PRIORITY:
 404         {
 405                 enum v4l2_priority *p=arg;
 406                 printk ("%s: priority=%d\n", s, *p);
 407                 break;
 408         }
 409         case VIDIOC_INT_S_TUNER_MODE:
 410         {
 411                 enum v4l2_tuner_type *p=arg;
 412                 printk ("%s: tuner type=%d\n", s, *p);
 413                 break;
 414         }
 415         case DECODER_SET_VBI_BYPASS:
 416         case DECODER_ENABLE_OUTPUT:
 417         case DECODER_GET_STATUS:
 418         case DECODER_SET_OUTPUT:
 419         case DECODER_SET_INPUT:
 420         case DECODER_SET_GPIO:
 421         case DECODER_SET_NORM:
 422         case VIDIOCCAPTURE:
 423         case VIDIOCSYNC:
 424         case VIDIOCSWRITEMODE:
 425         case TUNER_SET_TYPE_ADDR:
 426         case TUNER_SET_STANDBY:
 427         case TDA9887_SET_CONFIG:
 428 #ifdef __OLD_VIDIOC_
 429         case VIDIOC_OVERLAY_OLD:
 430 #endif
 431         case VIDIOC_STREAMOFF:
 432         case VIDIOC_G_OUTPUT:
 433         case VIDIOC_S_OUTPUT:
 434         case VIDIOC_STREAMON:
 435         case VIDIOC_G_INPUT:
 436         case VIDIOC_OVERLAY:
 437         case VIDIOC_S_INPUT:
 438         {
 439                 int *p=arg;
 440                 printk ("%s: value=%d\n", s, *p);
 441                 break;
 442         }
 443         case VIDIOC_G_AUDIO:
 444         case VIDIOC_S_AUDIO:
 445         case VIDIOC_ENUMAUDIO:
 446 #ifdef __OLD_VIDIOC_
 447         case VIDIOC_G_AUDIO_OLD:
 448 #endif
 449         {
 450                 struct v4l2_audio *p=arg;
 451
 452                 printk ("%s: index=%d, name=%s, capability=%d, mode=%d\n",
 453                         s,p->index, p->name,p->capability, p->mode);
 454                 break;
 455         }
 456         case VIDIOC_G_AUDOUT:
 457         case VIDIOC_S_AUDOUT:
 458         case VIDIOC_ENUMAUDOUT:
 459 #ifdef __OLD_VIDIOC_
 460         case VIDIOC_G_AUDOUT_OLD:
 461 #endif
 462         {
 463                 struct v4l2_audioout *p=arg;
 464                 printk ("%s: index=%d, name=%s, capability=%d, mode=%d\n", s,
 465                                 p->index, p->name, p->capability,p->mode);
 466                 break;
 467         }
 468         case VIDIOC_QBUF:
 469         case VIDIOC_DQBUF:
 470         case VIDIOC_QUERYBUF:
 471         {
 472                 struct v4l2_buffer *p=arg;
 473                 struct v4l2_timecode *tc=&p->timecode;
 474                 printk ("%s: %02ld:%02d:%02d.%08ld index=%d, type=%s, "
 475                         "bytesused=%d, flags=0x%08x, "
 476                         "field=%0d, sequence=%d, memory=%s, offset/userptr=0x%08lx\n",
 477                                 s,
 478                                 (p->timestamp.tv_sec/3600),
 479                                 (int)(p->timestamp.tv_sec/60)%60,
 480                                 (int)(p->timestamp.tv_sec%60),
 481                                 p->timestamp.tv_usec,
 482                                 p->index,
 483                                 prt_names(p->type,v4l2_type_names),
 484                                 p->bytesused,p->flags,
 485                                 p->field,p->sequence,
 486                                 prt_names(p->memory,v4l2_memory_names),
 487                                 p->m.userptr);
 488                 printk ("%s: timecode= %02d:%02d:%02d type=%d, "
 489                         "flags=0x%08x, frames=%d, userbits=0x%08x\n",
 490                                 s,tc->hours,tc->minutes,tc->seconds,
 491                                 tc->type, tc->flags, tc->frames, *(__u32 *) tc->userbits);
 492                 break;
 493         }
 494         case VIDIOC_QUERYCAP:
 495         {
 496                 struct v4l2_capability *p=arg;
 497                 printk ("%s: driver=%s, card=%s, bus=%s, version=0x%08x, "
 498                         "capabilities=0x%08x\n", s,
 499                                 p->driver,p->card,p->bus_info,
 500                                 p->version,
 501                                 p->capabilities);
 502                 break;
 503         }
 504         case VIDIOC_G_CTRL:
 505         case VIDIOC_S_CTRL:
 506 #ifdef __OLD_VIDIOC_
 507         case VIDIOC_S_CTRL_OLD:
 508 #endif
 509         {
 510                 struct v4l2_control *p=arg;
 511                 printk ("%s: id=%d, value=%d\n", s, p->id, p->value);
 512                 break;
 513         }
 514         case VIDIOC_G_CROP:
 515         case VIDIOC_S_CROP:
 516         {
 517                 struct v4l2_crop *p=arg;
 518                 /*FIXME: Should also show rect structs */
 519                 printk ("%s: type=%d\n", s, p->type);
 520                 break;
 521         }
 522         case VIDIOC_CROPCAP:
 523 #ifdef __OLD_VIDIOC_
 524         case VIDIOC_CROPCAP_OLD:
 525 #endif
 526         {
 527                 struct v4l2_cropcap *p=arg;
 528                 /*FIXME: Should also show rect structs */
 529                 printk ("%s: type=%d\n", s, p->type);
 530                 break;
 531         }
 532         case VIDIOC_INT_DECODE_VBI_LINE:
 533         {
 534                 struct v4l2_decode_vbi_line *p=arg;
 535                 printk ("%s: is_second_field=%d, ptr=0x%08lx, line=%d, "
 536                         "type=%d\n", s,
 537                                 p->is_second_field,(unsigned long)p->p,p->line,p->type);
 538                 break;
 539         }
 540         case VIDIOC_ENUM_FMT:
 541         {
 542                 struct v4l2_fmtdesc *p=arg;
 543                 printk ("%s: index=%d, type=%d, flags=%d, description=%s,"
 544                         " pixelformat=%d\n", s,
 545                                 p->index, p->type, p->flags,p->description,
 546                                 p->pixelformat);
 547
 548                 break;
 549         }
 550         case VIDIOC_G_FMT:
 551         case VIDIOC_S_FMT:
 552         case VIDIOC_TRY_FMT:
 553         {
 554                 struct v4l2_format *p=arg;
 555                 printk ("%s: type=%s\n", s,
 556                                 prt_names(p->type,v4l2_type_names));
 557                 switch (p->type) {
 558                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 559                         v4l_print_pix_fmt (s, &p->fmt.pix);
 560                         break;
 561                 default:
 562                         break;
 563                 }
 564         }
 565         case VIDIOC_G_FBUF:
 566         case VIDIOC_S_FBUF:
 567         {
 568                 struct v4l2_framebuffer *p=arg;
 569                 printk ("%s: capability=%d, flags=%d, base=0x%08lx\n", s,
 570                                 p->capability,p->flags, (unsigned long)p->base);
 571                 v4l_print_pix_fmt (s, &p->fmt);
 572                 break;
 573         }
 574         case VIDIOC_G_FREQUENCY:
 575         case VIDIOC_S_FREQUENCY:
 576         {
 577                 struct v4l2_frequency *p=arg;
 578                 printk ("%s: tuner=%d, type=%d, frequency=%d\n", s,
 579                                 p->tuner,p->type,p->frequency);
 580                 break;
 581         }
 582         case VIDIOC_ENUMINPUT:
 583         {
 584                 struct v4l2_input *p=arg;
 585                 printk ("%s: index=%d, name=%s, type=%d, audioset=%d, "
 586                         "tuner=%d, std=%Ld, status=%d\n", s,
 587                                 p->index,p->name,p->type,p->audioset,
 588                                 p->tuner,
 589                                 (unsigned long long)p->std,
 590                                 p->status);
 591                 break;
 592         }
 593         case VIDIOC_G_JPEGCOMP:
 594         case VIDIOC_S_JPEGCOMP:
 595         {
 596                 struct v4l2_jpegcompression *p=arg;
 597                 printk ("%s: quality=%d, APPn=%d, APP_len=%d, COM_len=%d,"
 598                         " jpeg_markers=%d\n", s,
 599                                 p->quality,p->APPn,p->APP_len,
 600                                 p->COM_len,p->jpeg_markers);
 601                 break;
 602         }
 603         case VIDIOC_G_MODULATOR:
 604         case VIDIOC_S_MODULATOR:
 605         {
 606                 struct v4l2_modulator *p=arg;
 607                 printk ("%s: index=%d, name=%s, capability=%d, rangelow=%d,"
 608                         " rangehigh=%d, txsubchans=%d\n", s,
 609                                 p->index, p->name,p->capability,p->rangelow,
 610                                 p->rangehigh,p->txsubchans);
 611                 break;
 612         }
 613         case VIDIOC_G_MPEGCOMP:
 614         case VIDIOC_S_MPEGCOMP:
 615         {
 616                 struct v4l2_mpeg_compression *p=arg;
 617                 /*FIXME: Several fields not shown */
 618                 printk ("%s: ts_pid_pmt=%d, ts_pid_audio=%d, ts_pid_video=%d, "
 619                         "ts_pid_pcr=%d, ps_size=%d, au_sample_rate=%d, "
 620                         "au_pesid=%c, vi_frame_rate=%d, vi_frames_per_gop=%d, "
 621                         "vi_bframes_count=%d, vi_pesid=%c\n", s,
 622                                 p->ts_pid_pmt,p->ts_pid_audio, p->ts_pid_video,
 623                                 p->ts_pid_pcr, p->ps_size, p->au_sample_rate,
 624                                 p->au_pesid, p->vi_frame_rate,
 625                                 p->vi_frames_per_gop, p->vi_bframes_count,
 626                                 p->vi_pesid);
 627                 break;
 628         }
 629         case VIDIOC_ENUMOUTPUT:
 630         {
 631                 struct v4l2_output *p=arg;
 632                 printk ("%s: index=%d, name=%s,type=%d, audioset=%d, "
 633                         "modulator=%d, std=%Ld\n",
 634                                 s,p->index,p->name,p->type,p->audioset,
 635                                 p->modulator,
 636                                 (unsigned long long)p->std);
 637                 break;
 638         }
 639         case VIDIOC_QUERYCTRL:
 640         {
 641                 struct v4l2_queryctrl *p=arg;
 642                 printk ("%s: id=%d, type=%d, name=%s, min/max=%d/%d,"
 643                         " step=%d, default=%d, flags=0x%08x\n", s,
 644                                 p->id,p->type,p->name,p->minimum,p->maximum,
 645                                 p->step,p->default_value,p->flags);
 646                 break;
 647         }
 648         case VIDIOC_QUERYMENU:
 649         {
 650                 struct v4l2_querymenu *p=arg;
 651                 printk ("%s: id=%d, index=%d, name=%s\n", s,
 652                                 p->id,p->index,p->name);
 653                 break;
 654         }
 655         case VIDIOC_INT_G_REGISTER:
 656         case VIDIOC_INT_S_REGISTER:
 657         {
 658                 struct v4l2_register *p=arg;
 659                 printk ("%s: i2c_id=%d, reg=%lu, val=%d\n", s,
 660                                 p->i2c_id,p->reg,p->val);
 661
 662                 break;
 663         }
 664         case VIDIOC_REQBUFS:
 665         {
 666                 struct v4l2_requestbuffers *p=arg;
 667                 printk ("%s: count=%d, type=%s, memory=%s\n", s,
 668                                 p->count,
 669                                 prt_names(p->type,v4l2_type_names),
 670                                 prt_names(p->memory,v4l2_memory_names));
 671                 break;
 672         }
 673         case VIDIOC_INT_S_AUDIO_ROUTING:
 674         case VIDIOC_INT_S_VIDEO_ROUTING:
 675         case VIDIOC_INT_G_AUDIO_ROUTING:
 676         case VIDIOC_INT_G_VIDEO_ROUTING:
 677         {
 678                 struct v4l2_routing  *p=arg;
 679                 printk ("%s: input=0x%x, output=0x%x\n", s, p->input, p->output);
 680                 break;
 681         }
 682         case VIDIOC_INT_S_CRYSTAL_FREQ:
 683         {
 684                 struct v4l2_crystal_freq *p=arg;
 685                 printk ("%s: freq=%u, flags=0x%x\n", s, p->freq, p->flags);
 686                 break;
 687         }
 688         case VIDIOC_G_SLICED_VBI_CAP:
 689         {
 690                 struct v4l2_sliced_vbi_cap *p=arg;
 691                 printk ("%s: service_set=%d\n", s,
 692                                 p->service_set);
 693                 break;
 694         }
 695         case VIDIOC_INT_S_VBI_DATA:
 696         case VIDIOC_INT_G_VBI_DATA:
 697         {
 698                 struct v4l2_sliced_vbi_data  *p=arg;
 699                 printk ("%s: id=%d, field=%d, line=%d\n", s,
 700                                 p->id, p->field, p->line);
 701                 break;
 702         }
 703         case VIDIOC_ENUMSTD:
 704         {
 705                 struct v4l2_standard *p=arg;
 706                 printk ("%s: index=%d, id=%Ld, name=%s, fps=%d/%d, "
 707                         "framelines=%d\n", s, p->index,
 708                                 (unsigned long long)p->id, p->name,
 709                                 p->frameperiod.numerator,
 710                                 p->frameperiod.denominator,
 711                                 p->framelines);
 712
 713                 break;
 714         }
 715         case VIDIOC_G_PARM:
 716         case VIDIOC_S_PARM:
 717 #ifdef __OLD_VIDIOC_
 718         case VIDIOC_S_PARM_OLD:
 719 #endif
 720         {
 721                 struct v4l2_streamparm *p=arg;
 722                 printk ("%s: type=%d\n", s, p->type);
 723
 724                 break;
 725         }
 726         case VIDIOC_G_TUNER:
 727         case VIDIOC_S_TUNER:
 728         {
 729                 struct v4l2_tuner *p=arg;
 730                 printk ("%s: index=%d, name=%s, type=%d, capability=%d, "
 731                         "rangelow=%d, rangehigh=%d, signal=%d, afc=%d, "
 732                         "rxsubchans=%d, audmode=%d\n", s,
 733                                 p->index, p->name, p->type,
 734                                 p->capability, p->rangelow,p->rangehigh,
 735                                 p->rxsubchans, p->audmode, p->signal,
 736                                 p->afc);
 737                 break;
 738         }
 739         case VIDIOCGVBIFMT:
 740         case VIDIOCSVBIFMT:
 741         {
 742                 struct vbi_format *p=arg;
 743                 printk ("%s: sampling_rate=%d, samples_per_line=%d, "
 744                         "sample_format=%d, start=%d/%d, count=%d/%d, flags=%d\n", s,
 745                                 p->sampling_rate,p->samples_per_line,
 746                                 p->sample_format,p->start[0],p->start[1],
 747                                 p->count[0],p->count[1],p->flags);
 748                 break;
 749         }
 750         case VIDIOCGAUDIO:
 751         case VIDIOCSAUDIO:
 752         {
 753                 struct video_audio *p=arg;
 754                 printk ("%s: audio=%d, volume=%d, bass=%d, treble=%d, "
 755                         "flags=%d, name=%s, mode=%d, balance=%d, step=%d\n",
 756                                 s,p->audio,p->volume,p->bass, p->treble,
 757                                 p->flags,p->name,p->mode,p->balance,p->step);
 758                 break;
 759         }
 760         case VIDIOCGFBUF:
 761         case VIDIOCSFBUF:
 762         {
 763                 struct video_buffer *p=arg;
 764                 printk ("%s: base=%08lx, height=%d, width=%d, depth=%d, "
 765                         "bytesperline=%d\n", s,
 766                                 (unsigned long) p->base, p->height, p->width,
 767                                 p->depth,p->bytesperline);
 768                 break;
 769         }
 770         case VIDIOCGCAP:
 771         {
 772                 struct video_capability *p=arg;
 773                 printk ("%s: name=%s, type=%d, channels=%d, audios=%d, "
 774                         "maxwidth=%d, maxheight=%d, minwidth=%d, minheight=%d\n",
 775                                 s,p->name,p->type,p->channels,p->audios,
 776                                 p->maxwidth,p->maxheight,p->minwidth,
 777                                 p->minheight);
 778
 779                 break;
 780         }
 781         case VIDIOCGCAPTURE:
 782         case VIDIOCSCAPTURE:
 783         {
 784                 struct video_capture *p=arg;
 785                 printk ("%s: x=%d, y=%d, width=%d, height=%d, decimation=%d,"
 786                         " flags=%d\n", s,
 787                                 p->x, p->y,p->width, p->height,
 788                                 p->decimation,p->flags);
 789                 break;
 790         }
 791         case VIDIOCGCHAN:
 792         case VIDIOCSCHAN:
 793         {
 794                 struct video_channel *p=arg;
 795                 printk ("%s: channel=%d, name=%s, tuners=%d, flags=%d, "
 796                         "type=%d, norm=%d\n", s,
 797                                 p->channel,p->name,p->tuners,
 798                                 p->flags,p->type,p->norm);
 799
 800                 break;
 801         }
 802         case VIDIOCSMICROCODE:
 803         {
 804                 struct video_code *p=arg;
 805                 printk ("%s: loadwhat=%s, datasize=%d\n", s,
 806                                 p->loadwhat,p->datasize);
 807                 break;
 808         }
 809         case DECODER_GET_CAPABILITIES:
 810         {
 811                 struct video_decoder_capability *p=arg;
 812                 printk ("%s: flags=%d, inputs=%d, outputs=%d\n", s,
 813                                 p->flags,p->inputs,p->outputs);
 814                 break;
 815         }
 816         case DECODER_INIT:
 817         {
 818                 struct video_decoder_init *p=arg;
 819                 printk ("%s: len=%c\n", s, p->len);
 820                 break;
 821         }
 822         case VIDIOCGPLAYINFO:
 823         {
 824                 struct video_info *p=arg;
 825                 printk ("%s: frame_count=%d, h_size=%d, v_size=%d, "
 826                         "smpte_timecode=%d, picture_type=%d, "
 827                         "temporal_reference=%d, user_data=%s\n", s,
 828                                 p->frame_count, p->h_size,
 829                                 p->v_size, p->smpte_timecode,
 830                                 p->picture_type, p->temporal_reference,
 831                                 p->user_data);
 832                 break;
 833         }
 834         case VIDIOCKEY:
 835         {
 836                 struct video_key *p=arg;
 837                 printk ("%s: key=%s, flags=%d\n", s,
 838                                 p->key, p->flags);
 839                 break;
 840         }
 841         case VIDIOCGMBUF:
 842         {
 843                 struct video_mbuf *p=arg;
 844                 printk ("%s: size=%d, frames=%d, offsets=0x%08lx\n", s,
 845                                 p->size,
 846                                 p->frames,
 847                                 (unsigned long)p->offsets);
 848                 break;
 849         }
 850         case VIDIOCMCAPTURE:
 851         {
 852                 struct video_mmap *p=arg;
 853                 printk ("%s: frame=%d, height=%d, width=%d, format=%d\n", s,
 854                                 p->frame,
 855                                 p->height, p->width,
 856                                 p->format);
 857                 break;
 858         }
 859         case VIDIOCGPICT:
 860         case VIDIOCSPICT:
 861         case DECODER_SET_PICTURE:
 862         {
 863                 struct video_picture *p=arg;
 864
 865                 printk ("%s: brightness=%d, hue=%d, colour=%d, contrast=%d,"
 866                         " whiteness=%d, depth=%d, palette=%d\n", s,
 867                                 p->brightness, p->hue, p->colour,
 868                                 p->contrast, p->whiteness, p->depth,
 869                                 p->palette);
 870                 break;
 871         }
 872         case VIDIOCSPLAYMODE:
 873         {
 874                 struct video_play_mode *p=arg;
 875                 printk ("%s: mode=%d, p1=%d, p2=%d\n", s,
 876                                 p->mode,p->p1,p->p2);
 877                 break;
 878         }
 879         case VIDIOCGTUNER:
 880         case VIDIOCSTUNER:
 881         {
 882                 struct video_tuner *p=arg;
 883                 printk ("%s: tuner=%d, name=%s, rangelow=%ld, rangehigh=%ld, "
 884                         "flags=%d, mode=%d, signal=%d\n", s,
 885                                 p->tuner, p->name,p->rangelow, p->rangehigh,
 886                                 p->flags,p->mode, p->signal);
 887                 break;
 888         }
 889         case VIDIOCGUNIT:
 890         {
 891                 struct video_unit *p=arg;
 892                 printk ("%s: video=%d, vbi=%d, radio=%d, audio=%d, "
 893                         "teletext=%d\n", s,
 894                                 p->video,p->vbi,p->radio,p->audio,p->teletext);
 895                 break;
 896         }
 897         case VIDIOCGWIN:
 898         case VIDIOCSWIN:
 899         {
 900                 struct video_window *p=arg;
 901                 printk ("%s: x=%d, y=%d, width=%d, height=%d, chromakey=%d,"
 902                         " flags=%d, clipcount=%d\n", s,
 903                                 p->x, p->y,p->width, p->height,
 904                                 p->chromakey,p->flags,
 905                                 p->clipcount);
 906                 break;
 907         }
 908         case VIDIOC_INT_AUDIO_CLOCK_FREQ:
 909         case VIDIOC_INT_I2S_CLOCK_FREQ:
 910         case VIDIOC_INT_S_STANDBY:
 911         {
 912                 u32 *p=arg;
 913
 914                 printk ("%s: value=%d\n", s, *p);
 915                 break;
 916         }
 917         case VIDIOCGFREQ:
 918         case VIDIOCSFREQ:
 919         {
 920                 unsigned long *p=arg;
 921                 printk ("%s: value=%lu\n", s, *p);
 922                 break;
 923         }
 924         case VIDIOC_G_STD:
 925         case VIDIOC_S_STD:
 926         case VIDIOC_QUERYSTD:
 927         {
 928                 v4l2_std_id *p=arg;
 929
 930                 printk ("%s: value=%Lu\n", s, (unsigned long long)*p);
 931                 break;
 932         }
 933         }
 934 }
 935
 936 /* ----------------------------------------------------------------- */
 937
 938 EXPORT_SYMBOL(v4l2_video_std_construct);
 939
 940 EXPORT_SYMBOL(v4l2_prio_init);
 941 EXPORT_SYMBOL(v4l2_prio_change);
 942 EXPORT_SYMBOL(v4l2_prio_open);
 943 EXPORT_SYMBOL(v4l2_prio_close);
 944 EXPORT_SYMBOL(v4l2_prio_max);
 945 EXPORT_SYMBOL(v4l2_prio_check);
 946
 947 EXPORT_SYMBOL(v4l2_field_names);
 948 EXPORT_SYMBOL(v4l2_type_names);
 949 EXPORT_SYMBOL(v4l_printk_ioctl);
 950 EXPORT_SYMBOL(v4l_printk_ioctl_arg);
 951
 952 /*
 953  * Local variables:
 954  * c-basic-offset: 8
 955  * End:
 956  */