drivers/media/v4l2-core/v4l2-ioctl.c

   1 /*
   2  * Video capture interface for Linux version 2
   3  *
   4  * A generic framework to process V4L2 ioctl commands.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the License, or (at your option) any later version.
  10  *
  11  * Authors:     Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1)
  12  *              Mauro Carvalho Chehab <mchehab@infradead.org> (version 2)
  13  */
  14
  15 #include <linux/mm.h>
  16 #include <linux/module.h>
  17 #include <linux/slab.h>
  18 #include <linux/types.h>
  19 #include <linux/kernel.h>
  20 #include <linux/version.h>
  21
  22 #include <linux/v4l2-subdev.h>
  23 #include <linux/videodev2.h>
  24
  25 #include <media/v4l2-common.h>
  26 #include <media/v4l2-ioctl.h>
  27 #include <media/v4l2-ctrls.h>
  28 #include <media/v4l2-fh.h>
  29 #include <media/v4l2-event.h>
  30 #include <media/v4l2-device.h>
  31 #include <media/videobuf2-v4l2.h>
  32 #include <media/v4l2-mc.h>
  33
  34 #include <trace/events/v4l2.h>
  35
  36 /* Zero out the end of the struct pointed to by p.  Everything after, but
  37  * not including, the specified field is cleared. */
  38 #define CLEAR_AFTER_FIELD(p, field) \
  39         memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \
  40         0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field))
  41
  42 #define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls)
  43
  44 struct std_descr {
  45         v4l2_std_id std;
  46         const char *descr;
  47 };
  48
  49 static const struct std_descr standards[] = {
  50         { V4L2_STD_NTSC,        "NTSC"      },
  51         { V4L2_STD_NTSC_M,      "NTSC-M"    },
  52         { V4L2_STD_NTSC_M_JP,   "NTSC-M-JP" },
  53         { V4L2_STD_NTSC_M_KR,   "NTSC-M-KR" },
  54         { V4L2_STD_NTSC_443,    "NTSC-443"  },
  55         { V4L2_STD_PAL,         "PAL"       },
  56         { V4L2_STD_PAL_BG,      "PAL-BG"    },
  57         { V4L2_STD_PAL_B,       "PAL-B"     },
  58         { V4L2_STD_PAL_B1,      "PAL-B1"    },
  59         { V4L2_STD_PAL_G,       "PAL-G"     },
  60         { V4L2_STD_PAL_H,       "PAL-H"     },
  61         { V4L2_STD_PAL_I,       "PAL-I"     },
  62         { V4L2_STD_PAL_DK,      "PAL-DK"    },
  63         { V4L2_STD_PAL_D,       "PAL-D"     },
  64         { V4L2_STD_PAL_D1,      "PAL-D1"    },
  65         { V4L2_STD_PAL_K,       "PAL-K"     },
  66         { V4L2_STD_PAL_M,       "PAL-M"     },
  67         { V4L2_STD_PAL_N,       "PAL-N"     },
  68         { V4L2_STD_PAL_Nc,      "PAL-Nc"    },
  69         { V4L2_STD_PAL_60,      "PAL-60"    },
  70         { V4L2_STD_SECAM,       "SECAM"     },
  71         { V4L2_STD_SECAM_B,     "SECAM-B"   },
  72         { V4L2_STD_SECAM_G,     "SECAM-G"   },
  73         { V4L2_STD_SECAM_H,     "SECAM-H"   },
  74         { V4L2_STD_SECAM_DK,    "SECAM-DK"  },
  75         { V4L2_STD_SECAM_D,     "SECAM-D"   },
  76         { V4L2_STD_SECAM_K,     "SECAM-K"   },
  77         { V4L2_STD_SECAM_K1,    "SECAM-K1"  },
  78         { V4L2_STD_SECAM_L,     "SECAM-L"   },
  79         { V4L2_STD_SECAM_LC,    "SECAM-Lc"  },
  80         { 0,                    "Unknown"   }
  81 };
  82
  83 /* video4linux standard ID conversion to standard name
  84  */
  85 const char *v4l2_norm_to_name(v4l2_std_id id)
  86 {
  87         u32 myid = id;
  88         int i;
  89
  90         /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
  91            64 bit comparations. So, on that architecture, with some gcc
  92            variants, compilation fails. Currently, the max value is 30bit wide.
  93          */
  94         BUG_ON(myid != id);
  95
  96         for (i = 0; standards[i].std; i++)
  97                 if (myid == standards[i].std)
  98                         break;
  99         return standards[i].descr;
 100 }
 101 EXPORT_SYMBOL(v4l2_norm_to_name);
 102
 103 /* Returns frame period for the given standard */
 104 void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod)
 105 {
 106         if (id & V4L2_STD_525_60) {
 107                 frameperiod->numerator = 1001;
 108                 frameperiod->denominator = 30000;
 109         } else {
 110                 frameperiod->numerator = 1;
 111                 frameperiod->denominator = 25;
 112         }
 113 }
 114 EXPORT_SYMBOL(v4l2_video_std_frame_period);
 115
 116 /* Fill in the fields of a v4l2_standard structure according to the
 117    'id' and 'transmission' parameters.  Returns negative on error.  */
 118 int v4l2_video_std_construct(struct v4l2_standard *vs,
 119                              int id, const char *name)
 120 {
 121         vs->id = id;
 122         v4l2_video_std_frame_period(id, &vs->frameperiod);
 123         vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625;
 124         strlcpy(vs->name, name, sizeof(vs->name));
 125         return 0;
 126 }
 127 EXPORT_SYMBOL(v4l2_video_std_construct);
 128
 129 /* ----------------------------------------------------------------- */
 130 /* some arrays for pretty-printing debug messages of enum types      */
 131
 132 const char *v4l2_field_names[] = {
 133         [V4L2_FIELD_ANY]        = "any",
 134         [V4L2_FIELD_NONE]       = "none",
 135         [V4L2_FIELD_TOP]        = "top",
 136         [V4L2_FIELD_BOTTOM]     = "bottom",
 137         [V4L2_FIELD_INTERLACED] = "interlaced",
 138         [V4L2_FIELD_SEQ_TB]     = "seq-tb",
 139         [V4L2_FIELD_SEQ_BT]     = "seq-bt",
 140         [V4L2_FIELD_ALTERNATE]  = "alternate",
 141         [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",
 142         [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",
 143 };
 144 EXPORT_SYMBOL(v4l2_field_names);
 145
 146 const char *v4l2_type_names[] = {
 147         [0]                                = "0",
 148         [V4L2_BUF_TYPE_VIDEO_CAPTURE]      = "vid-cap",
 149         [V4L2_BUF_TYPE_VIDEO_OVERLAY]      = "vid-overlay",
 150         [V4L2_BUF_TYPE_VIDEO_OUTPUT]       = "vid-out",
 151         [V4L2_BUF_TYPE_VBI_CAPTURE]        = "vbi-cap",
 152         [V4L2_BUF_TYPE_VBI_OUTPUT]         = "vbi-out",
 153         [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",
 154         [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT]  = "sliced-vbi-out",
 155         [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay",
 156         [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane",
 157         [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane",
 158         [V4L2_BUF_TYPE_SDR_CAPTURE]        = "sdr-cap",
 159         [V4L2_BUF_TYPE_SDR_OUTPUT]         = "sdr-out",
 160         [V4L2_BUF_TYPE_META_CAPTURE]       = "meta-cap",
 161 };
 162 EXPORT_SYMBOL(v4l2_type_names);
 163
 164 static const char *v4l2_memory_names[] = {
 165         [V4L2_MEMORY_MMAP]    = "mmap",
 166         [V4L2_MEMORY_USERPTR] = "userptr",
 167         [V4L2_MEMORY_OVERLAY] = "overlay",
 168         [V4L2_MEMORY_DMABUF] = "dmabuf",
 169 };
 170
 171 #define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown")
 172
 173 /* ------------------------------------------------------------------ */
 174 /* debug help functions                                               */
 175
 176 static void v4l_print_querycap(const void *arg, bool write_only)
 177 {
 178         const struct v4l2_capability *p = arg;
 179
 180         pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, capabilities=0x%08x, device_caps=0x%08x\n",
 181                 (int)sizeof(p->driver), p->driver,
 182                 (int)sizeof(p->card), p->card,
 183                 (int)sizeof(p->bus_info), p->bus_info,
 184                 p->version, p->capabilities, p->device_caps);
 185 }
 186
 187 static void v4l_print_enuminput(const void *arg, bool write_only)
 188 {
 189         const struct v4l2_input *p = arg;
 190
 191         pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, std=0x%08Lx, status=0x%x, capabilities=0x%x\n",
 192                 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
 193                 p->tuner, (unsigned long long)p->std, p->status,
 194                 p->capabilities);
 195 }
 196
 197 static void v4l_print_enumoutput(const void *arg, bool write_only)
 198 {
 199         const struct v4l2_output *p = arg;
 200
 201         pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, modulator=%u, std=0x%08Lx, capabilities=0x%x\n",
 202                 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
 203                 p->modulator, (unsigned long long)p->std, p->capabilities);
 204 }
 205
 206 static void v4l_print_audio(const void *arg, bool write_only)
 207 {
 208         const struct v4l2_audio *p = arg;
 209
 210         if (write_only)
 211                 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode);
 212         else
 213                 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
 214                         p->index, (int)sizeof(p->name), p->name,
 215                         p->capability, p->mode);
 216 }
 217
 218 static void v4l_print_audioout(const void *arg, bool write_only)
 219 {
 220         const struct v4l2_audioout *p = arg;
 221
 222         if (write_only)
 223                 pr_cont("index=%u\n", p->index);
 224         else
 225                 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
 226                         p->index, (int)sizeof(p->name), p->name,
 227                         p->capability, p->mode);
 228 }
 229
 230 static void v4l_print_fmtdesc(const void *arg, bool write_only)
 231 {
 232         const struct v4l2_fmtdesc *p = arg;
 233
 234         pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%c%c%c%c, description='%.*s'\n",
 235                 p->index, prt_names(p->type, v4l2_type_names),
 236                 p->flags, (p->pixelformat & 0xff),
 237                 (p->pixelformat >>  8) & 0xff,
 238                 (p->pixelformat >> 16) & 0xff,
 239                 (p->pixelformat >> 24) & 0xff,
 240                 (int)sizeof(p->description), p->description);
 241 }
 242
 243 static void v4l_print_format(const void *arg, bool write_only)
 244 {
 245         const struct v4l2_format *p = arg;
 246         const struct v4l2_pix_format *pix;
 247         const struct v4l2_pix_format_mplane *mp;
 248         const struct v4l2_vbi_format *vbi;
 249         const struct v4l2_sliced_vbi_format *sliced;
 250         const struct v4l2_window *win;
 251         const struct v4l2_sdr_format *sdr;
 252         const struct v4l2_meta_format *meta;
 253         unsigned i;
 254
 255         pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
 256         switch (p->type) {
 257         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 258         case V4L2_BUF_TYPE_VIDEO_OUTPUT:
 259                 pix = &p->fmt.pix;
 260                 pr_cont(", width=%u, height=%u, pixelformat=%c%c%c%c, field=%s, bytesperline=%u, sizeimage=%u, colorspace=%d, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",
 261                         pix->width, pix->height,
 262                         (pix->pixelformat & 0xff),
 263                         (pix->pixelformat >>  8) & 0xff,
 264                         (pix->pixelformat >> 16) & 0xff,
 265                         (pix->pixelformat >> 24) & 0xff,
 266                         prt_names(pix->field, v4l2_field_names),
 267                         pix->bytesperline, pix->sizeimage,
 268                         pix->colorspace, pix->flags, pix->ycbcr_enc,
 269                         pix->quantization, pix->xfer_func);
 270                 break;
 271         case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
 272         case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
 273                 mp = &p->fmt.pix_mp;
 274                 pr_cont(", width=%u, height=%u, format=%c%c%c%c, field=%s, colorspace=%d, num_planes=%u, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",
 275                         mp->width, mp->height,
 276                         (mp->pixelformat & 0xff),
 277                         (mp->pixelformat >>  8) & 0xff,
 278                         (mp->pixelformat >> 16) & 0xff,
 279                         (mp->pixelformat >> 24) & 0xff,
 280                         prt_names(mp->field, v4l2_field_names),
 281                         mp->colorspace, mp->num_planes, mp->flags,
 282                         mp->ycbcr_enc, mp->quantization, mp->xfer_func);
 283                 for (i = 0; i < mp->num_planes; i++)
 284                         printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i,
 285                                         mp->plane_fmt[i].bytesperline,
 286                                         mp->plane_fmt[i].sizeimage);
 287                 break;
 288         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
 289         case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
 290                 win = &p->fmt.win;
 291                 /* Note: we can't print the clip list here since the clips
 292                  * pointer is a userspace pointer, not a kernelspace
 293                  * pointer. */
 294                 pr_cont(", wxh=%dx%d, x,y=%d,%d, field=%s, chromakey=0x%08x, clipcount=%u, clips=%p, bitmap=%p, global_alpha=0x%02x\n",
 295                         win->w.width, win->w.height, win->w.left, win->w.top,
 296                         prt_names(win->field, v4l2_field_names),
 297                         win->chromakey, win->clipcount, win->clips,
 298                         win->bitmap, win->global_alpha);
 299                 break;
 300         case V4L2_BUF_TYPE_VBI_CAPTURE:
 301         case V4L2_BUF_TYPE_VBI_OUTPUT:
 302                 vbi = &p->fmt.vbi;
 303                 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n",
 304                         vbi->sampling_rate, vbi->offset,
 305                         vbi->samples_per_line,
 306                         (vbi->sample_format & 0xff),
 307                         (vbi->sample_format >>  8) & 0xff,
 308                         (vbi->sample_format >> 16) & 0xff,
 309                         (vbi->sample_format >> 24) & 0xff,
 310                         vbi->start[0], vbi->start[1],
 311                         vbi->count[0], vbi->count[1]);
 312                 break;
 313         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 314         case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
 315                 sliced = &p->fmt.sliced;
 316                 pr_cont(", service_set=0x%08x, io_size=%d\n",
 317                                 sliced->service_set, sliced->io_size);
 318                 for (i = 0; i < 24; i++)
 319                         printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
 320                                 sliced->service_lines[0][i],
 321                                 sliced->service_lines[1][i]);
 322                 break;
 323         case V4L2_BUF_TYPE_SDR_CAPTURE:
 324         case V4L2_BUF_TYPE_SDR_OUTPUT:
 325                 sdr = &p->fmt.sdr;
 326                 pr_cont(", pixelformat=%c%c%c%c\n",
 327                         (sdr->pixelformat >>  0) & 0xff,
 328                         (sdr->pixelformat >>  8) & 0xff,
 329                         (sdr->pixelformat >> 16) & 0xff,
 330                         (sdr->pixelformat >> 24) & 0xff);
 331                 break;
 332         case V4L2_BUF_TYPE_META_CAPTURE:
 333                 meta = &p->fmt.meta;
 334                 pr_cont(", dataformat=%c%c%c%c, buffersize=%u\n",
 335                         (meta->dataformat >>  0) & 0xff,
 336                         (meta->dataformat >>  8) & 0xff,
 337                         (meta->dataformat >> 16) & 0xff,
 338                         (meta->dataformat >> 24) & 0xff,
 339                         meta->buffersize);
 340                 break;
 341         }
 342 }
 343
 344 static void v4l_print_framebuffer(const void *arg, bool write_only)
 345 {
 346         const struct v4l2_framebuffer *p = arg;
 347
 348         pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, height=%u, pixelformat=%c%c%c%c, bytesperline=%u, sizeimage=%u, colorspace=%d\n",
 349                         p->capability, p->flags, p->base,
 350                         p->fmt.width, p->fmt.height,
 351                         (p->fmt.pixelformat & 0xff),
 352                         (p->fmt.pixelformat >>  8) & 0xff,
 353                         (p->fmt.pixelformat >> 16) & 0xff,
 354                         (p->fmt.pixelformat >> 24) & 0xff,
 355                         p->fmt.bytesperline, p->fmt.sizeimage,
 356                         p->fmt.colorspace);
 357 }
 358
 359 static void v4l_print_buftype(const void *arg, bool write_only)
 360 {
 361         pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names));
 362 }
 363
 364 static void v4l_print_modulator(const void *arg, bool write_only)
 365 {
 366         const struct v4l2_modulator *p = arg;
 367
 368         if (write_only)
 369                 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans);
 370         else
 371                 pr_cont("index=%u, name=%.*s, capability=0x%x, rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
 372                         p->index, (int)sizeof(p->name), p->name, p->capability,
 373                         p->rangelow, p->rangehigh, p->txsubchans);
 374 }
 375
 376 static void v4l_print_tuner(const void *arg, bool write_only)
 377 {
 378         const struct v4l2_tuner *p = arg;
 379
 380         if (write_only)
 381                 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode);
 382         else
 383                 pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, rangelow=%u, rangehigh=%u, signal=%u, afc=%d, rxsubchans=0x%x, audmode=%u\n",
 384                         p->index, (int)sizeof(p->name), p->name, p->type,
 385                         p->capability, p->rangelow,
 386                         p->rangehigh, p->signal, p->afc,
 387                         p->rxsubchans, p->audmode);
 388 }
 389
 390 static void v4l_print_frequency(const void *arg, bool write_only)
 391 {
 392         const struct v4l2_frequency *p = arg;
 393
 394         pr_cont("tuner=%u, type=%u, frequency=%u\n",
 395                                 p->tuner, p->type, p->frequency);
 396 }
 397
 398 static void v4l_print_standard(const void *arg, bool write_only)
 399 {
 400         const struct v4l2_standard *p = arg;
 401
 402         pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, framelines=%u\n",
 403                 p->index,
 404                 (unsigned long long)p->id, (int)sizeof(p->name), p->name,
 405                 p->frameperiod.numerator,
 406                 p->frameperiod.denominator,
 407                 p->framelines);
 408 }
 409
 410 static void v4l_print_std(const void *arg, bool write_only)
 411 {
 412         pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg);
 413 }
 414
 415 static void v4l_print_hw_freq_seek(const void *arg, bool write_only)
 416 {
 417         const struct v4l2_hw_freq_seek *p = arg;
 418
 419         pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, rangelow=%u, rangehigh=%u\n",
 420                 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing,
 421                 p->rangelow, p->rangehigh);
 422 }
 423
 424 static void v4l_print_requestbuffers(const void *arg, bool write_only)
 425 {
 426         const struct v4l2_requestbuffers *p = arg;
 427
 428         pr_cont("count=%d, type=%s, memory=%s\n",
 429                 p->count,
 430                 prt_names(p->type, v4l2_type_names),
 431                 prt_names(p->memory, v4l2_memory_names));
 432 }
 433
 434 static void v4l_print_buffer(const void *arg, bool write_only)
 435 {
 436         const struct v4l2_buffer *p = arg;
 437         const struct v4l2_timecode *tc = &p->timecode;
 438         const struct v4l2_plane *plane;
 439         int i;
 440
 441         pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, flags=0x%08x, field=%s, sequence=%d, memory=%s",
 442                         p->timestamp.tv_sec / 3600,
 443                         (int)(p->timestamp.tv_sec / 60) % 60,
 444                         (int)(p->timestamp.tv_sec % 60),
 445                         (long)p->timestamp.tv_usec,
 446                         p->index,
 447                         prt_names(p->type, v4l2_type_names),
 448                         p->flags, prt_names(p->field, v4l2_field_names),
 449                         p->sequence, prt_names(p->memory, v4l2_memory_names));
 450
 451         if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
 452                 pr_cont("\n");
 453                 for (i = 0; i < p->length; ++i) {
 454                         plane = &p->m.planes[i];
 455                         printk(KERN_DEBUG
 456                                 "plane %d: bytesused=%d, data_offset=0x%08x, offset/userptr=0x%lx, length=%d\n",
 457                                 i, plane->bytesused, plane->data_offset,
 458                                 plane->m.userptr, plane->length);
 459                 }
 460         } else {
 461                 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n",
 462                         p->bytesused, p->m.userptr, p->length);
 463         }
 464
 465         printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, flags=0x%08x, frames=%d, userbits=0x%08x\n",
 466                         tc->hours, tc->minutes, tc->seconds,
 467                         tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
 468 }
 469
 470 static void v4l_print_exportbuffer(const void *arg, bool write_only)
 471 {
 472         const struct v4l2_exportbuffer *p = arg;
 473
 474         pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n",
 475                 p->fd, prt_names(p->type, v4l2_type_names),
 476                 p->index, p->plane, p->flags);
 477 }
 478
 479 static void v4l_print_create_buffers(const void *arg, bool write_only)
 480 {
 481         const struct v4l2_create_buffers *p = arg;
 482
 483         pr_cont("index=%d, count=%d, memory=%s, ",
 484                         p->index, p->count,
 485                         prt_names(p->memory, v4l2_memory_names));
 486         v4l_print_format(&p->format, write_only);
 487 }
 488
 489 static void v4l_print_streamparm(const void *arg, bool write_only)
 490 {
 491         const struct v4l2_streamparm *p = arg;
 492
 493         pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
 494
 495         if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
 496             p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
 497                 const struct v4l2_captureparm *c = &p->parm.capture;
 498
 499                 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, extendedmode=%d, readbuffers=%d\n",
 500                         c->capability, c->capturemode,
 501                         c->timeperframe.numerator, c->timeperframe.denominator,
 502                         c->extendedmode, c->readbuffers);
 503         } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
 504                    p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
 505                 const struct v4l2_outputparm *c = &p->parm.output;
 506
 507                 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, extendedmode=%d, writebuffers=%d\n",
 508                         c->capability, c->outputmode,
 509                         c->timeperframe.numerator, c->timeperframe.denominator,
 510                         c->extendedmode, c->writebuffers);
 511         } else {
 512                 pr_cont("\n");
 513         }
 514 }
 515
 516 static void v4l_print_queryctrl(const void *arg, bool write_only)
 517 {
 518         const struct v4l2_queryctrl *p = arg;
 519
 520         pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, step=%d, default=%d, flags=0x%08x\n",
 521                         p->id, p->type, (int)sizeof(p->name), p->name,
 522                         p->minimum, p->maximum,
 523                         p->step, p->default_value, p->flags);
 524 }
 525
 526 static void v4l_print_query_ext_ctrl(const void *arg, bool write_only)
 527 {
 528         const struct v4l2_query_ext_ctrl *p = arg;
 529
 530         pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%lld/%lld, step=%lld, default=%lld, flags=0x%08x, elem_size=%u, elems=%u, nr_of_dims=%u, dims=%u,%u,%u,%u\n",
 531                         p->id, p->type, (int)sizeof(p->name), p->name,
 532                         p->minimum, p->maximum,
 533                         p->step, p->default_value, p->flags,
 534                         p->elem_size, p->elems, p->nr_of_dims,
 535                         p->dims[0], p->dims[1], p->dims[2], p->dims[3]);
 536 }
 537
 538 static void v4l_print_querymenu(const void *arg, bool write_only)
 539 {
 540         const struct v4l2_querymenu *p = arg;
 541
 542         pr_cont("id=0x%x, index=%d\n", p->id, p->index);
 543 }
 544
 545 static void v4l_print_control(const void *arg, bool write_only)
 546 {
 547         const struct v4l2_control *p = arg;
 548
 549         pr_cont("id=0x%x, value=%d\n", p->id, p->value);
 550 }
 551
 552 static void v4l_print_ext_controls(const void *arg, bool write_only)
 553 {
 554         const struct v4l2_ext_controls *p = arg;
 555         int i;
 556
 557         pr_cont("which=0x%x, count=%d, error_idx=%d",
 558                         p->which, p->count, p->error_idx);
 559         for (i = 0; i < p->count; i++) {
 560                 if (!p->controls[i].size)
 561                         pr_cont(", id/val=0x%x/0x%x",
 562                                 p->controls[i].id, p->controls[i].value);
 563                 else
 564                         pr_cont(", id/size=0x%x/%u",
 565                                 p->controls[i].id, p->controls[i].size);
 566         }
 567         pr_cont("\n");
 568 }
 569
 570 static void v4l_print_cropcap(const void *arg, bool write_only)
 571 {
 572         const struct v4l2_cropcap *p = arg;
 573
 574         pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, defrect wxh=%dx%d, x,y=%d,%d, pixelaspect %d/%d\n",
 575                 prt_names(p->type, v4l2_type_names),
 576                 p->bounds.width, p->bounds.height,
 577                 p->bounds.left, p->bounds.top,
 578                 p->defrect.width, p->defrect.height,
 579                 p->defrect.left, p->defrect.top,
 580                 p->pixelaspect.numerator, p->pixelaspect.denominator);
 581 }
 582
 583 static void v4l_print_crop(const void *arg, bool write_only)
 584 {
 585         const struct v4l2_crop *p = arg;
 586
 587         pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n",
 588                 prt_names(p->type, v4l2_type_names),
 589                 p->c.width, p->c.height,
 590                 p->c.left, p->c.top);
 591 }
 592
 593 static void v4l_print_selection(const void *arg, bool write_only)
 594 {
 595         const struct v4l2_selection *p = arg;
 596
 597         pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n",
 598                 prt_names(p->type, v4l2_type_names),
 599                 p->target, p->flags,
 600                 p->r.width, p->r.height, p->r.left, p->r.top);
 601 }
 602
 603 static void v4l_print_jpegcompression(const void *arg, bool write_only)
 604 {
 605         const struct v4l2_jpegcompression *p = arg;
 606
 607         pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n",
 608                 p->quality, p->APPn, p->APP_len,
 609                 p->COM_len, p->jpeg_markers);
 610 }
 611
 612 static void v4l_print_enc_idx(const void *arg, bool write_only)
 613 {
 614         const struct v4l2_enc_idx *p = arg;
 615
 616         pr_cont("entries=%d, entries_cap=%d\n",
 617                         p->entries, p->entries_cap);
 618 }
 619
 620 static void v4l_print_encoder_cmd(const void *arg, bool write_only)
 621 {
 622         const struct v4l2_encoder_cmd *p = arg;
 623
 624         pr_cont("cmd=%d, flags=0x%x\n",
 625                         p->cmd, p->flags);
 626 }
 627
 628 static void v4l_print_decoder_cmd(const void *arg, bool write_only)
 629 {
 630         const struct v4l2_decoder_cmd *p = arg;
 631
 632         pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags);
 633
 634         if (p->cmd == V4L2_DEC_CMD_START)
 635                 pr_info("speed=%d, format=%u\n",
 636                                 p->start.speed, p->start.format);
 637         else if (p->cmd == V4L2_DEC_CMD_STOP)
 638                 pr_info("pts=%llu\n", p->stop.pts);
 639 }
 640
 641 static void v4l_print_dbg_chip_info(const void *arg, bool write_only)
 642 {
 643         const struct v4l2_dbg_chip_info *p = arg;
 644
 645         pr_cont("type=%u, ", p->match.type);
 646         if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
 647                 pr_cont("name=%.*s, ",
 648                                 (int)sizeof(p->match.name), p->match.name);
 649         else
 650                 pr_cont("addr=%u, ", p->match.addr);
 651         pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name);
 652 }
 653
 654 static void v4l_print_dbg_register(const void *arg, bool write_only)
 655 {
 656         const struct v4l2_dbg_register *p = arg;
 657
 658         pr_cont("type=%u, ", p->match.type);
 659         if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
 660                 pr_cont("name=%.*s, ",
 661                                 (int)sizeof(p->match.name), p->match.name);
 662         else
 663                 pr_cont("addr=%u, ", p->match.addr);
 664         pr_cont("reg=0x%llx, val=0x%llx\n",
 665                         p->reg, p->val);
 666 }
 667
 668 static void v4l_print_dv_timings(const void *arg, bool write_only)
 669 {
 670         const struct v4l2_dv_timings *p = arg;
 671
 672         switch (p->type) {
 673         case V4L2_DV_BT_656_1120:
 674                 pr_cont("type=bt-656/1120, interlaced=%u, pixelclock=%llu, width=%u, height=%u, polarities=0x%x, hfrontporch=%u, hsync=%u, hbackporch=%u, vfrontporch=%u, vsync=%u, vbackporch=%u, il_vfrontporch=%u, il_vsync=%u, il_vbackporch=%u, standards=0x%x, flags=0x%x\n",
 675                                 p->bt.interlaced, p->bt.pixelclock,
 676                                 p->bt.width, p->bt.height,
 677                                 p->bt.polarities, p->bt.hfrontporch,
 678                                 p->bt.hsync, p->bt.hbackporch,
 679                                 p->bt.vfrontporch, p->bt.vsync,
 680                                 p->bt.vbackporch, p->bt.il_vfrontporch,
 681                                 p->bt.il_vsync, p->bt.il_vbackporch,
 682                                 p->bt.standards, p->bt.flags);
 683                 break;
 684         default:
 685                 pr_cont("type=%d\n", p->type);
 686                 break;
 687         }
 688 }
 689
 690 static void v4l_print_enum_dv_timings(const void *arg, bool write_only)
 691 {
 692         const struct v4l2_enum_dv_timings *p = arg;
 693
 694         pr_cont("index=%u, ", p->index);
 695         v4l_print_dv_timings(&p->timings, write_only);
 696 }
 697
 698 static void v4l_print_dv_timings_cap(const void *arg, bool write_only)
 699 {
 700         const struct v4l2_dv_timings_cap *p = arg;
 701
 702         switch (p->type) {
 703         case V4L2_DV_BT_656_1120:
 704                 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
 705                         p->bt.min_width, p->bt.max_width,
 706                         p->bt.min_height, p->bt.max_height,
 707                         p->bt.min_pixelclock, p->bt.max_pixelclock,
 708                         p->bt.standards, p->bt.capabilities);
 709                 break;
 710         default:
 711                 pr_cont("type=%u\n", p->type);
 712                 break;
 713         }
 714 }
 715
 716 static void v4l_print_frmsizeenum(const void *arg, bool write_only)
 717 {
 718         const struct v4l2_frmsizeenum *p = arg;
 719
 720         pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u",
 721                         p->index,
 722                         (p->pixel_format & 0xff),
 723                         (p->pixel_format >>  8) & 0xff,
 724                         (p->pixel_format >> 16) & 0xff,
 725                         (p->pixel_format >> 24) & 0xff,
 726                         p->type);
 727         switch (p->type) {
 728         case V4L2_FRMSIZE_TYPE_DISCRETE:
 729                 pr_cont(", wxh=%ux%u\n",
 730                         p->discrete.width, p->discrete.height);
 731                 break;
 732         case V4L2_FRMSIZE_TYPE_STEPWISE:
 733                 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n",
 734                                 p->stepwise.min_width,  p->stepwise.min_height,
 735                                 p->stepwise.step_width, p->stepwise.step_height,
 736                                 p->stepwise.max_width,  p->stepwise.max_height);
 737                 break;
 738         case V4L2_FRMSIZE_TYPE_CONTINUOUS:
 739                 /* fall through */
 740         default:
 741                 pr_cont("\n");
 742                 break;
 743         }
 744 }
 745
 746 static void v4l_print_frmivalenum(const void *arg, bool write_only)
 747 {
 748         const struct v4l2_frmivalenum *p = arg;
 749
 750         pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u",
 751                         p->index,
 752                         (p->pixel_format & 0xff),
 753                         (p->pixel_format >>  8) & 0xff,
 754                         (p->pixel_format >> 16) & 0xff,
 755                         (p->pixel_format >> 24) & 0xff,
 756                         p->width, p->height, p->type);
 757         switch (p->type) {
 758         case V4L2_FRMIVAL_TYPE_DISCRETE:
 759                 pr_cont(", fps=%d/%d\n",
 760                                 p->discrete.numerator,
 761                                 p->discrete.denominator);
 762                 break;
 763         case V4L2_FRMIVAL_TYPE_STEPWISE:
 764                 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n",
 765                                 p->stepwise.min.numerator,
 766                                 p->stepwise.min.denominator,
 767                                 p->stepwise.max.numerator,
 768                                 p->stepwise.max.denominator,
 769                                 p->stepwise.step.numerator,
 770                                 p->stepwise.step.denominator);
 771                 break;
 772         case V4L2_FRMIVAL_TYPE_CONTINUOUS:
 773                 /* fall through */
 774         default:
 775                 pr_cont("\n");
 776                 break;
 777         }
 778 }
 779
 780 static void v4l_print_event(const void *arg, bool write_only)
 781 {
 782         const struct v4l2_event *p = arg;
 783         const struct v4l2_event_ctrl *c;
 784
 785         pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%lu.%9.9lu\n",
 786                         p->type, p->pending, p->sequence, p->id,
 787                         p->timestamp.tv_sec, p->timestamp.tv_nsec);
 788         switch (p->type) {
 789         case V4L2_EVENT_VSYNC:
 790                 printk(KERN_DEBUG "field=%s\n",
 791                         prt_names(p->u.vsync.field, v4l2_field_names));
 792                 break;
 793         case V4L2_EVENT_CTRL:
 794                 c = &p->u.ctrl;
 795                 printk(KERN_DEBUG "changes=0x%x, type=%u, ",
 796                         c->changes, c->type);
 797                 if (c->type == V4L2_CTRL_TYPE_INTEGER64)
 798                         pr_cont("value64=%lld, ", c->value64);
 799                 else
 800                         pr_cont("value=%d, ", c->value);
 801                 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n",
 802                         c->flags, c->minimum, c->maximum,
 803                         c->step, c->default_value);
 804                 break;
 805         case V4L2_EVENT_FRAME_SYNC:
 806                 pr_cont("frame_sequence=%u\n",
 807                         p->u.frame_sync.frame_sequence);
 808                 break;
 809         }
 810 }
 811
 812 static void v4l_print_event_subscription(const void *arg, bool write_only)
 813 {
 814         const struct v4l2_event_subscription *p = arg;
 815
 816         pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
 817                         p->type, p->id, p->flags);
 818 }
 819
 820 static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only)
 821 {
 822         const struct v4l2_sliced_vbi_cap *p = arg;
 823         int i;
 824
 825         pr_cont("type=%s, service_set=0x%08x\n",
 826                         prt_names(p->type, v4l2_type_names), p->service_set);
 827         for (i = 0; i < 24; i++)
 828                 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
 829                                 p->service_lines[0][i],
 830                                 p->service_lines[1][i]);
 831 }
 832
 833 static void v4l_print_freq_band(const void *arg, bool write_only)
 834 {
 835         const struct v4l2_frequency_band *p = arg;
 836
 837         pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n",
 838                         p->tuner, p->type, p->index,
 839                         p->capability, p->rangelow,
 840                         p->rangehigh, p->modulation);
 841 }
 842
 843 static void v4l_print_edid(const void *arg, bool write_only)
 844 {
 845         const struct v4l2_edid *p = arg;
 846
 847         pr_cont("pad=%u, start_block=%u, blocks=%u\n",
 848                 p->pad, p->start_block, p->blocks);
 849 }
 850
 851 static void v4l_print_u32(const void *arg, bool write_only)
 852 {
 853         pr_cont("value=%u\n", *(const u32 *)arg);
 854 }
 855
 856 static void v4l_print_newline(const void *arg, bool write_only)
 857 {
 858         pr_cont("\n");
 859 }
 860
 861 static void v4l_print_default(const void *arg, bool write_only)
 862 {
 863         pr_cont("driver-specific ioctl\n");
 864 }
 865
 866 static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
 867 {
 868         __u32 i;
 869
 870         /* zero the reserved fields */
 871         c->reserved[0] = c->reserved[1] = 0;
 872         for (i = 0; i < c->count; i++)
 873                 c->controls[i].reserved2[0] = 0;
 874
 875         /* V4L2_CID_PRIVATE_BASE cannot be used as control class
 876            when using extended controls.
 877            Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
 878            is it allowed for backwards compatibility.
 879          */
 880         if (!allow_priv && c->which == V4L2_CID_PRIVATE_BASE)
 881                 return 0;
 882         if (!c->which)
 883                 return 1;
 884         /* Check that all controls are from the same control class. */
 885         for (i = 0; i < c->count; i++) {
 886                 if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) {
 887                         c->error_idx = i;
 888                         return 0;
 889                 }
 890         }
 891         return 1;
 892 }
 893
 894 static int check_fmt(struct file *file, enum v4l2_buf_type type)
 895 {
 896         struct video_device *vfd = video_devdata(file);
 897         const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
 898         bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
 899         bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI;
 900         bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
 901         bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH;
 902         bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
 903         bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
 904
 905         if (ops == NULL)
 906                 return -EINVAL;
 907
 908         switch (type) {
 909         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 910                 if ((is_vid || is_tch) && is_rx &&
 911                     (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane))
 912                         return 0;
 913                 break;
 914         case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
 915                 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_cap_mplane)
 916                         return 0;
 917                 break;
 918         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
 919                 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay)
 920                         return 0;
 921                 break;
 922         case V4L2_BUF_TYPE_VIDEO_OUTPUT:
 923                 if (is_vid && is_tx &&
 924                     (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane))
 925                         return 0;
 926                 break;
 927         case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
 928                 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane)
 929                         return 0;
 930                 break;
 931         case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
 932                 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay)
 933                         return 0;
 934                 break;
 935         case V4L2_BUF_TYPE_VBI_CAPTURE:
 936                 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap)
 937                         return 0;
 938                 break;
 939         case V4L2_BUF_TYPE_VBI_OUTPUT:
 940                 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out)
 941                         return 0;
 942                 break;
 943         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 944                 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap)
 945                         return 0;
 946                 break;
 947         case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
 948                 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out)
 949                         return 0;
 950                 break;
 951         case V4L2_BUF_TYPE_SDR_CAPTURE:
 952                 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap)
 953                         return 0;
 954                 break;
 955         case V4L2_BUF_TYPE_SDR_OUTPUT:
 956                 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out)
 957                         return 0;
 958                 break;
 959         case V4L2_BUF_TYPE_META_CAPTURE:
 960                 if (is_vid && is_rx && ops->vidioc_g_fmt_meta_cap)
 961                         return 0;
 962                 break;
 963         default:
 964                 break;
 965         }
 966         return -EINVAL;
 967 }
 968
 969 static void v4l_sanitize_format(struct v4l2_format *fmt)
 970 {
 971         unsigned int offset;
 972
 973         /*
 974          * The v4l2_pix_format structure has been extended with fields that were
 975          * not previously required to be set to zero by applications. The priv
 976          * field, when set to a magic value, indicates the the extended fields
 977          * are valid. Otherwise they will contain undefined values. To simplify
 978          * the API towards drivers zero the extended fields and set the priv
 979          * field to the magic value when the extended pixel format structure
 980          * isn't used by applications.
 981          */
 982
 983         if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
 984             fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
 985                 return;
 986
 987         if (fmt->fmt.pix.priv == V4L2_PIX_FMT_PRIV_MAGIC)
 988                 return;
 989
 990         fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
 991
 992         offset = offsetof(struct v4l2_pix_format, priv)
 993                + sizeof(fmt->fmt.pix.priv);
 994         memset(((void *)&fmt->fmt.pix) + offset, 0,
 995                sizeof(fmt->fmt.pix) - offset);
 996 }
 997
 998 static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
 999                                 struct file *file, void *fh, void *arg)
1000 {
1001         struct v4l2_capability *cap = (struct v4l2_capability *)arg;
1002         struct video_device *vfd = video_devdata(file);
1003         int ret;
1004
1005         cap->version = LINUX_VERSION_CODE;
1006         cap->device_caps = vfd->device_caps;
1007         cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS;
1008
1009         ret = ops->vidioc_querycap(file, fh, cap);
1010
1011         cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT;
1012         /*
1013          * Drivers MUST fill in device_caps, so check for this and
1014          * warn if it was forgotten.
1015          */
1016         WARN(!(cap->capabilities & V4L2_CAP_DEVICE_CAPS) ||
1017                 !cap->device_caps, "Bad caps for driver %s, %x %x",
1018                 cap->driver, cap->capabilities, cap->device_caps);
1019         cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT;
1020
1021         return ret;
1022 }
1023
1024 static int v4l_s_input(const struct v4l2_ioctl_ops *ops,
1025                                 struct file *file, void *fh, void *arg)
1026 {
1027         struct video_device *vfd = video_devdata(file);
1028         int ret;
1029
1030         ret = v4l_enable_media_source(vfd);
1031         if (ret)
1032                 return ret;
1033         return ops->vidioc_s_input(file, fh, *(unsigned int *)arg);
1034 }
1035
1036 static int v4l_s_output(const struct v4l2_ioctl_ops *ops,
1037                                 struct file *file, void *fh, void *arg)
1038 {
1039         return ops->vidioc_s_output(file, fh, *(unsigned int *)arg);
1040 }
1041
1042 static int v4l_g_priority(const struct v4l2_ioctl_ops *ops,
1043                                 struct file *file, void *fh, void *arg)
1044 {
1045         struct video_device *vfd;
1046         u32 *p = arg;
1047
1048         vfd = video_devdata(file);
1049         *p = v4l2_prio_max(vfd->prio);
1050         return 0;
1051 }
1052
1053 static int v4l_s_priority(const struct v4l2_ioctl_ops *ops,
1054                                 struct file *file, void *fh, void *arg)
1055 {
1056         struct video_device *vfd;
1057         struct v4l2_fh *vfh;
1058         u32 *p = arg;
1059
1060         vfd = video_devdata(file);
1061         if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
1062                 return -ENOTTY;
1063         vfh = file->private_data;
1064         return v4l2_prio_change(vfd->prio, &vfh->prio, *p);
1065 }
1066
1067 static int v4l_enuminput(const struct v4l2_ioctl_ops *ops,
1068                                 struct file *file, void *fh, void *arg)
1069 {
1070         struct video_device *vfd = video_devdata(file);
1071         struct v4l2_input *p = arg;
1072
1073         /*
1074          * We set the flags for CAP_DV_TIMINGS &
1075          * CAP_STD here based on ioctl handler provided by the
1076          * driver. If the driver doesn't support these
1077          * for a specific input, it must override these flags.
1078          */
1079         if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1080                 p->capabilities |= V4L2_IN_CAP_STD;
1081
1082         return ops->vidioc_enum_input(file, fh, p);
1083 }
1084
1085 static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops,
1086                                 struct file *file, void *fh, void *arg)
1087 {
1088         struct video_device *vfd = video_devdata(file);
1089         struct v4l2_output *p = arg;
1090
1091         /*
1092          * We set the flags for CAP_DV_TIMINGS &
1093          * CAP_STD here based on ioctl handler provided by the
1094          * driver. If the driver doesn't support these
1095          * for a specific output, it must override these flags.
1096          */
1097         if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1098                 p->capabilities |= V4L2_OUT_CAP_STD;
1099
1100         return ops->vidioc_enum_output(file, fh, p);
1101 }
1102
1103 static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
1104 {
1105         const unsigned sz = sizeof(fmt->description);
1106         const char *descr = NULL;
1107         u32 flags = 0;
1108
1109         /*
1110          * We depart from the normal coding style here since the descriptions
1111          * should be aligned so it is easy to see which descriptions will be
1112          * longer than 31 characters (the max length for a description).
1113          * And frankly, this is easier to read anyway.
1114          *
1115          * Note that gcc will use O(log N) comparisons to find the right case.
1116          */
1117         switch (fmt->pixelformat) {
1118         /* Max description length mask: descr = "0123456789012345678901234567890" */
1119         case V4L2_PIX_FMT_RGB332:       descr = "8-bit RGB 3-3-2"; break;
1120         case V4L2_PIX_FMT_RGB444:       descr = "16-bit A/XRGB 4-4-4-4"; break;
1121         case V4L2_PIX_FMT_ARGB444:      descr = "16-bit ARGB 4-4-4-4"; break;
1122         case V4L2_PIX_FMT_XRGB444:      descr = "16-bit XRGB 4-4-4-4"; break;
1123         case V4L2_PIX_FMT_RGB555:       descr = "16-bit A/XRGB 1-5-5-5"; break;
1124         case V4L2_PIX_FMT_ARGB555:      descr = "16-bit ARGB 1-5-5-5"; break;
1125         case V4L2_PIX_FMT_XRGB555:      descr = "16-bit XRGB 1-5-5-5"; break;
1126         case V4L2_PIX_FMT_RGB565:       descr = "16-bit RGB 5-6-5"; break;
1127         case V4L2_PIX_FMT_RGB555X:      descr = "16-bit A/XRGB 1-5-5-5 BE"; break;
1128         case V4L2_PIX_FMT_ARGB555X:     descr = "16-bit ARGB 1-5-5-5 BE"; break;
1129         case V4L2_PIX_FMT_XRGB555X:     descr = "16-bit XRGB 1-5-5-5 BE"; break;
1130         case V4L2_PIX_FMT_RGB565X:      descr = "16-bit RGB 5-6-5 BE"; break;
1131         case V4L2_PIX_FMT_BGR666:       descr = "18-bit BGRX 6-6-6-14"; break;
1132         case V4L2_PIX_FMT_BGR24:        descr = "24-bit BGR 8-8-8"; break;
1133         case V4L2_PIX_FMT_RGB24:        descr = "24-bit RGB 8-8-8"; break;
1134         case V4L2_PIX_FMT_BGR32:        descr = "32-bit BGRA/X 8-8-8-8"; break;
1135         case V4L2_PIX_FMT_ABGR32:       descr = "32-bit BGRA 8-8-8-8"; break;
1136         case V4L2_PIX_FMT_XBGR32:       descr = "32-bit BGRX 8-8-8-8"; break;
1137         case V4L2_PIX_FMT_RGB32:        descr = "32-bit A/XRGB 8-8-8-8"; break;
1138         case V4L2_PIX_FMT_ARGB32:       descr = "32-bit ARGB 8-8-8-8"; break;
1139         case V4L2_PIX_FMT_XRGB32:       descr = "32-bit XRGB 8-8-8-8"; break;
1140         case V4L2_PIX_FMT_XBGR30:       descr = "32-bit XBGR 2-10-10-10"; break;
1141         case V4L2_PIX_FMT_GREY:         descr = "8-bit Greyscale"; break;
1142         case V4L2_PIX_FMT_Y4:           descr = "4-bit Greyscale"; break;
1143         case V4L2_PIX_FMT_Y6:           descr = "6-bit Greyscale"; break;
1144         case V4L2_PIX_FMT_Y10:          descr = "10-bit Greyscale"; break;
1145         case V4L2_PIX_FMT_Y12:          descr = "12-bit Greyscale"; break;
1146         case V4L2_PIX_FMT_Y16:          descr = "16-bit Greyscale"; break;
1147         case V4L2_PIX_FMT_Y16_BE:       descr = "16-bit Greyscale BE"; break;
1148         case V4L2_PIX_FMT_Y10BPACK:     descr = "10-bit Greyscale (Packed)"; break;
1149         case V4L2_PIX_FMT_Y8I:          descr = "Interleaved 8-bit Greyscale"; break;
1150         case V4L2_PIX_FMT_Y12I:         descr = "Interleaved 12-bit Greyscale"; break;
1151         case V4L2_PIX_FMT_Z16:          descr = "16-bit Depth"; break;
1152         case V4L2_PIX_FMT_INZI:         descr = "Planar 10:16 Greyscale Depth"; break;
1153         case V4L2_PIX_FMT_PAL8:         descr = "8-bit Palette"; break;
1154         case V4L2_PIX_FMT_UV8:          descr = "8-bit Chrominance UV 4-4"; break;
1155         case V4L2_PIX_FMT_YVU410:       descr = "Planar YVU 4:1:0"; break;
1156         case V4L2_PIX_FMT_YVU420:       descr = "Planar YVU 4:2:0"; break;
1157         case V4L2_PIX_FMT_YUYV:         descr = "YUYV 4:2:2"; break;
1158         case V4L2_PIX_FMT_YYUV:         descr = "YYUV 4:2:2"; break;
1159         case V4L2_PIX_FMT_YVYU:         descr = "YVYU 4:2:2"; break;
1160         case V4L2_PIX_FMT_UYVY:         descr = "UYVY 4:2:2"; break;
1161         case V4L2_PIX_FMT_VYUY:         descr = "VYUY 4:2:2"; break;
1162         case V4L2_PIX_FMT_YUV422P:      descr = "Planar YUV 4:2:2"; break;
1163         case V4L2_PIX_FMT_YUV411P:      descr = "Planar YUV 4:1:1"; break;
1164         case V4L2_PIX_FMT_Y41P:         descr = "YUV 4:1:1 (Packed)"; break;
1165         case V4L2_PIX_FMT_YUV444:       descr = "16-bit A/XYUV 4-4-4-4"; break;
1166         case V4L2_PIX_FMT_XVUY32:       descr = "32-bit packed XVUY 8-8-8-8"; break;
1167         case V4L2_PIX_FMT_AVUY32:       descr = "32-bit packed AVUY 8-8-8-8"; break;
1168         case V4L2_PIX_FMT_VUY24:        descr = "24-bit packed VUY 8-8-8"; break;
1169         case V4L2_PIX_FMT_YUV555:       descr = "16-bit A/XYUV 1-5-5-5"; break;
1170         case V4L2_PIX_FMT_YUV565:       descr = "16-bit YUV 5-6-5"; break;
1171         case V4L2_PIX_FMT_YUV32:        descr = "32-bit A/XYUV 8-8-8-8"; break;
1172         case V4L2_PIX_FMT_YUV410:       descr = "Planar YUV 4:1:0"; break;
1173         case V4L2_PIX_FMT_YUV420:       descr = "Planar YUV 4:2:0"; break;
1174         case V4L2_PIX_FMT_HI240:        descr = "8-bit Dithered RGB (BTTV)"; break;
1175         case V4L2_PIX_FMT_HM12:         descr = "YUV 4:2:0 (16x16 Macroblocks)"; break;
1176         case V4L2_PIX_FMT_M420:         descr = "YUV 4:2:0 (M420)"; break;
1177         case V4L2_PIX_FMT_XVUY10:       descr = "XVUY 2-10-10-10"; break;
1178         case V4L2_PIX_FMT_NV12:         descr = "Y/CbCr 4:2:0"; break;
1179         case V4L2_PIX_FMT_NV21:         descr = "Y/CrCb 4:2:0"; break;
1180         case V4L2_PIX_FMT_NV16:         descr = "Y/CbCr 4:2:2"; break;
1181         case V4L2_PIX_FMT_NV61:         descr = "Y/CrCb 4:2:2"; break;
1182         case V4L2_PIX_FMT_NV24:         descr = "Y/CbCr 4:4:4"; break;
1183         case V4L2_PIX_FMT_NV42:         descr = "Y/CrCb 4:4:4"; break;
1184         case V4L2_PIX_FMT_XV15:         descr = "Y/CrCb 4:2:0 10-bit"; break;
1185         case V4L2_PIX_FMT_XV20:         descr = "Y/CrCb 4:2:2 10-bit"; break;
1186         case V4L2_PIX_FMT_NV12M:        descr = "Y/CbCr 4:2:0 (N-C)"; break;
1187         case V4L2_PIX_FMT_NV21M:        descr = "Y/CrCb 4:2:0 (N-C)"; break;
1188         case V4L2_PIX_FMT_NV16M:        descr = "Y/CbCr 4:2:2 (N-C)"; break;
1189         case V4L2_PIX_FMT_NV61M:        descr = "Y/CrCb 4:2:2 (N-C)"; break;
1190         case V4L2_PIX_FMT_NV12MT:       descr = "Y/CbCr 4:2:0 (64x32 MB, N-C)"; break;
1191         case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/CbCr 4:2:0 (16x16 MB, N-C)"; break;
1192         case V4L2_PIX_FMT_XV20M:        descr = "Y/CrCb 4:2:2 10-bit (N-C)"; break;
1193         case V4L2_PIX_FMT_XV15M:        descr = "Y/CrCb 4:2:0 10-bit (N-C)"; break;
1194         case V4L2_PIX_FMT_YUV420M:      descr = "Planar YUV 4:2:0 (N-C)"; break;
1195         case V4L2_PIX_FMT_YVU420M:      descr = "Planar YVU 4:2:0 (N-C)"; break;
1196         case V4L2_PIX_FMT_YUV422M:      descr = "Planar YUV 4:2:2 (N-C)"; break;
1197         case V4L2_PIX_FMT_YVU422M:      descr = "Planar YVU 4:2:2 (N-C)"; break;
1198         case V4L2_PIX_FMT_YUV444M:      descr = "Planar YUV 4:4:4 (N-C)"; break;
1199         case V4L2_PIX_FMT_YVU444M:      descr = "Planar YVU 4:4:4 (N-C)"; break;
1200         case V4L2_PIX_FMT_SBGGR8:       descr = "8-bit Bayer BGBG/GRGR"; break;
1201         case V4L2_PIX_FMT_SGBRG8:       descr = "8-bit Bayer GBGB/RGRG"; break;
1202         case V4L2_PIX_FMT_SGRBG8:       descr = "8-bit Bayer GRGR/BGBG"; break;
1203         case V4L2_PIX_FMT_SRGGB8:       descr = "8-bit Bayer RGRG/GBGB"; break;
1204         case V4L2_PIX_FMT_SBGGR10:      descr = "10-bit Bayer BGBG/GRGR"; break;
1205         case V4L2_PIX_FMT_SGBRG10:      descr = "10-bit Bayer GBGB/RGRG"; break;
1206         case V4L2_PIX_FMT_SGRBG10:      descr = "10-bit Bayer GRGR/BGBG"; break;
1207         case V4L2_PIX_FMT_SRGGB10:      descr = "10-bit Bayer RGRG/GBGB"; break;
1208         case V4L2_PIX_FMT_SBGGR10P:     descr = "10-bit Bayer BGBG/GRGR Packed"; break;
1209         case V4L2_PIX_FMT_SGBRG10P:     descr = "10-bit Bayer GBGB/RGRG Packed"; break;
1210         case V4L2_PIX_FMT_SGRBG10P:     descr = "10-bit Bayer GRGR/BGBG Packed"; break;
1211         case V4L2_PIX_FMT_SRGGB10P:     descr = "10-bit Bayer RGRG/GBGB Packed"; break;
1212         case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break;
1213         case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break;
1214         case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break;
1215         case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break;
1216         case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break;
1217         case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break;
1218         case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break;
1219         case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break;
1220         case V4L2_PIX_FMT_SBGGR12:      descr = "12-bit Bayer BGBG/GRGR"; break;
1221         case V4L2_PIX_FMT_SGBRG12:      descr = "12-bit Bayer GBGB/RGRG"; break;
1222         case V4L2_PIX_FMT_SGRBG12:      descr = "12-bit Bayer GRGR/BGBG"; break;
1223         case V4L2_PIX_FMT_SRGGB12:      descr = "12-bit Bayer RGRG/GBGB"; break;
1224         case V4L2_PIX_FMT_SBGGR12P:     descr = "12-bit Bayer BGBG/GRGR Packed"; break;
1225         case V4L2_PIX_FMT_SGBRG12P:     descr = "12-bit Bayer GBGB/RGRG Packed"; break;
1226         case V4L2_PIX_FMT_SGRBG12P:     descr = "12-bit Bayer GRGR/BGBG Packed"; break;
1227         case V4L2_PIX_FMT_SRGGB12P:     descr = "12-bit Bayer RGRG/GBGB Packed"; break;
1228         case V4L2_PIX_FMT_SBGGR16:      descr = "16-bit Bayer BGBG/GRGR"; break;
1229         case V4L2_PIX_FMT_SGBRG16:      descr = "16-bit Bayer GBGB/RGRG"; break;
1230         case V4L2_PIX_FMT_SGRBG16:      descr = "16-bit Bayer GRGR/BGBG"; break;
1231         case V4L2_PIX_FMT_SRGGB16:      descr = "16-bit Bayer RGRG/GBGB"; break;
1232         case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break;
1233         case V4L2_PIX_FMT_SPCA501:      descr = "GSPCA SPCA501"; break;
1234         case V4L2_PIX_FMT_SPCA505:      descr = "GSPCA SPCA505"; break;
1235         case V4L2_PIX_FMT_SPCA508:      descr = "GSPCA SPCA508"; break;
1236         case V4L2_PIX_FMT_STV0680:      descr = "GSPCA STV0680"; break;
1237         case V4L2_PIX_FMT_TM6000:       descr = "A/V + VBI Mux Packet"; break;
1238         case V4L2_PIX_FMT_CIT_YYVYUY:   descr = "GSPCA CIT YYVYUY"; break;
1239         case V4L2_PIX_FMT_KONICA420:    descr = "GSPCA KONICA420"; break;
1240         case V4L2_PIX_FMT_HSV24:        descr = "24-bit HSV 8-8-8"; break;
1241         case V4L2_PIX_FMT_HSV32:        descr = "32-bit XHSV 8-8-8-8"; break;
1242         case V4L2_SDR_FMT_CU8:          descr = "Complex U8"; break;
1243         case V4L2_SDR_FMT_CU16LE:       descr = "Complex U16LE"; break;
1244         case V4L2_SDR_FMT_CS8:          descr = "Complex S8"; break;
1245         case V4L2_SDR_FMT_CS14LE:       descr = "Complex S14LE"; break;
1246         case V4L2_SDR_FMT_RU12LE:       descr = "Real U12LE"; break;
1247         case V4L2_SDR_FMT_PCU16BE:      descr = "Planar Complex U16BE"; break;
1248         case V4L2_SDR_FMT_PCU18BE:      descr = "Planar Complex U18BE"; break;
1249         case V4L2_SDR_FMT_PCU20BE:      descr = "Planar Complex U20BE"; break;
1250         case V4L2_TCH_FMT_DELTA_TD16:   descr = "16-bit signed deltas"; break;
1251         case V4L2_TCH_FMT_DELTA_TD08:   descr = "8-bit signed deltas"; break;
1252         case V4L2_TCH_FMT_TU16:         descr = "16-bit unsigned touch data"; break;
1253         case V4L2_TCH_FMT_TU08:         descr = "8-bit unsigned touch data"; break;
1254         case V4L2_META_FMT_VSP1_HGO:    descr = "R-Car VSP1 1-D Histogram"; break;
1255         case V4L2_META_FMT_VSP1_HGT:    descr = "R-Car VSP1 2-D Histogram"; break;
1256
1257         default:
1258                 /* Compressed formats */
1259                 flags = V4L2_FMT_FLAG_COMPRESSED;
1260                 switch (fmt->pixelformat) {
1261                 /* Max description length mask: descr = "0123456789012345678901234567890" */
1262                 case V4L2_PIX_FMT_MJPEG:        descr = "Motion-JPEG"; break;
1263                 case V4L2_PIX_FMT_JPEG:         descr = "JFIF JPEG"; break;
1264                 case V4L2_PIX_FMT_DV:           descr = "1394"; break;
1265                 case V4L2_PIX_FMT_MPEG:         descr = "MPEG-1/2/4"; break;
1266                 case V4L2_PIX_FMT_H264:         descr = "H.264"; break;
1267                 case V4L2_PIX_FMT_H264_NO_SC:   descr = "H.264 (No Start Codes)"; break;
1268                 case V4L2_PIX_FMT_H264_MVC:     descr = "H.264 MVC"; break;
1269                 case V4L2_PIX_FMT_H263:         descr = "H.263"; break;
1270                 case V4L2_PIX_FMT_MPEG1:        descr = "MPEG-1 ES"; break;
1271                 case V4L2_PIX_FMT_MPEG2:        descr = "MPEG-2 ES"; break;
1272                 case V4L2_PIX_FMT_MPEG4:        descr = "MPEG-4 part 2 ES"; break;
1273                 case V4L2_PIX_FMT_XVID:         descr = "Xvid"; break;
1274                 case V4L2_PIX_FMT_VC1_ANNEX_G:  descr = "VC-1 (SMPTE 412M Annex G)"; break;
1275                 case V4L2_PIX_FMT_VC1_ANNEX_L:  descr = "VC-1 (SMPTE 412M Annex L)"; break;
1276                 case V4L2_PIX_FMT_VP8:          descr = "VP8"; break;
1277                 case V4L2_PIX_FMT_VP9:          descr = "VP9"; break;
1278                 case V4L2_PIX_FMT_CPIA1:        descr = "GSPCA CPiA YUV"; break;
1279                 case V4L2_PIX_FMT_WNVA:         descr = "WNVA"; break;
1280                 case V4L2_PIX_FMT_SN9C10X:      descr = "GSPCA SN9C10X"; break;
1281                 case V4L2_PIX_FMT_PWC1:         descr = "Raw Philips Webcam Type (Old)"; break;
1282                 case V4L2_PIX_FMT_PWC2:         descr = "Raw Philips Webcam Type (New)"; break;
1283                 case V4L2_PIX_FMT_ET61X251:     descr = "GSPCA ET61X251"; break;
1284                 case V4L2_PIX_FMT_SPCA561:      descr = "GSPCA SPCA561"; break;
1285                 case V4L2_PIX_FMT_PAC207:       descr = "GSPCA PAC207"; break;
1286                 case V4L2_PIX_FMT_MR97310A:     descr = "GSPCA MR97310A"; break;
1287                 case V4L2_PIX_FMT_JL2005BCD:    descr = "GSPCA JL2005BCD"; break;
1288                 case V4L2_PIX_FMT_SN9C2028:     descr = "GSPCA SN9C2028"; break;
1289                 case V4L2_PIX_FMT_SQ905C:       descr = "GSPCA SQ905C"; break;
1290                 case V4L2_PIX_FMT_PJPG:         descr = "GSPCA PJPG"; break;
1291                 case V4L2_PIX_FMT_OV511:        descr = "GSPCA OV511"; break;
1292                 case V4L2_PIX_FMT_OV518:        descr = "GSPCA OV518"; break;
1293                 case V4L2_PIX_FMT_JPGL:         descr = "JPEG Lite"; break;
1294                 case V4L2_PIX_FMT_SE401:        descr = "GSPCA SE401"; break;
1295                 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break;
1296                 case V4L2_PIX_FMT_MT21C:        descr = "Mediatek Compressed Format"; break;
1297                 default:
1298                         WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat);
1299                         if (fmt->description[0])
1300                                 return;
1301                         flags = 0;
1302                         snprintf(fmt->description, sz, "%c%c%c%c%s",
1303                                         (char)(fmt->pixelformat & 0x7f),
1304                                         (char)((fmt->pixelformat >> 8) & 0x7f),
1305                                         (char)((fmt->pixelformat >> 16) & 0x7f),
1306                                         (char)((fmt->pixelformat >> 24) & 0x7f),
1307                                         (fmt->pixelformat & (1 << 31)) ? "-BE" : "");
1308                         break;
1309                 }
1310         }
1311
1312         if (descr)
1313                 WARN_ON(strlcpy(fmt->description, descr, sz) >= sz);
1314         fmt->flags = flags;
1315 }
1316
1317 static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
1318                                 struct file *file, void *fh, void *arg)
1319 {
1320         struct v4l2_fmtdesc *p = arg;
1321         struct video_device *vfd = video_devdata(file);
1322         bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1323         bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
1324         bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH;
1325         bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1326         bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
1327         int ret = -EINVAL;
1328
1329         switch (p->type) {
1330         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1331                 if (unlikely(!is_rx || (!is_vid && !is_tch) || !ops->vidioc_enum_fmt_vid_cap))
1332                         break;
1333                 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
1334                 break;
1335         case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1336                 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_cap_mplane))
1337                         break;
1338                 ret = ops->vidioc_enum_fmt_vid_cap_mplane(file, fh, arg);
1339                 break;
1340         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1341                 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_overlay))
1342                         break;
1343                 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
1344                 break;
1345         case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1346                 if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out))
1347                         break;
1348                 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg);
1349                 break;
1350         case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1351                 if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out_mplane))
1352                         break;
1353                 ret = ops->vidioc_enum_fmt_vid_out_mplane(file, fh, arg);
1354                 break;
1355         case V4L2_BUF_TYPE_SDR_CAPTURE:
1356                 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_enum_fmt_sdr_cap))
1357                         break;
1358                 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg);
1359                 break;
1360         case V4L2_BUF_TYPE_SDR_OUTPUT:
1361                 if (unlikely(!is_tx || !is_sdr || !ops->vidioc_enum_fmt_sdr_out))
1362                         break;
1363                 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg);
1364                 break;
1365         case V4L2_BUF_TYPE_META_CAPTURE:
1366                 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_meta_cap))
1367                         break;
1368                 ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg);
1369                 break;
1370         }
1371         if (ret == 0)
1372                 v4l_fill_fmtdesc(p);
1373         return ret;
1374 }
1375
1376 static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
1377                                 struct file *file, void *fh, void *arg)
1378 {
1379         struct v4l2_format *p = arg;
1380         struct video_device *vfd = video_devdata(file);
1381         bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1382         bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
1383         bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH;
1384         bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1385         bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
1386         int ret;
1387
1388         /*
1389          * fmt can't be cleared for these overlay types due to the 'clips'
1390          * 'clipcount' and 'bitmap' pointers in struct v4l2_window.
1391          * Those are provided by the user. So handle these two overlay types
1392          * first, and then just do a simple memset for the other types.
1393          */
1394         switch (p->type) {
1395         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1396         case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: {
1397                 struct v4l2_clip __user *clips = p->fmt.win.clips;
1398                 u32 clipcount = p->fmt.win.clipcount;
1399                 void __user *bitmap = p->fmt.win.bitmap;
1400
1401                 memset(&p->fmt, 0, sizeof(p->fmt));
1402                 p->fmt.win.clips = clips;
1403                 p->fmt.win.clipcount = clipcount;
1404                 p->fmt.win.bitmap = bitmap;
1405                 break;
1406         }
1407         default:
1408                 memset(&p->fmt, 0, sizeof(p->fmt));
1409                 break;
1410         }
1411
1412         switch (p->type) {
1413         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1414                 if (unlikely(!is_rx || (!is_vid && !is_tch) || !ops->vidioc_g_fmt_vid_cap))
1415                         break;
1416                 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1417                 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg);
1418                 /* just in case the driver zeroed it again */
1419                 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1420                 return ret;
1421         case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1422                 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap_mplane))
1423                         break;
1424                 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
1425         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1426                 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_overlay))
1427                         break;
1428                 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
1429         case V4L2_BUF_TYPE_VBI_CAPTURE:
1430                 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_vbi_cap))
1431                         break;
1432                 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
1433         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1434                 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_cap))
1435                         break;
1436                 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
1437         case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1438                 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out))
1439                         break;
1440                 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1441                 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg);
1442                 /* just in case the driver zeroed it again */
1443                 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1444                 return ret;
1445         case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1446                 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_mplane))
1447                         break;
1448                 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
1449         case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1450                 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_overlay))
1451                         break;
1452                 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
1453         case V4L2_BUF_TYPE_VBI_OUTPUT:
1454                 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_vbi_out))
1455                         break;
1456                 return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
1457         case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1458                 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_out))
1459                         break;
1460                 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
1461         case V4L2_BUF_TYPE_SDR_CAPTURE:
1462                 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_g_fmt_sdr_cap))
1463                         break;
1464                 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg);
1465         case V4L2_BUF_TYPE_SDR_OUTPUT:
1466                 if (unlikely(!is_tx || !is_sdr || !ops->vidioc_g_fmt_sdr_out))
1467                         break;
1468                 return ops->vidioc_g_fmt_sdr_out(file, fh, arg);
1469         case V4L2_BUF_TYPE_META_CAPTURE:
1470                 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_meta_cap))
1471                         break;
1472                 return ops->vidioc_g_fmt_meta_cap(file, fh, arg);
1473         }
1474         return -EINVAL;
1475 }
1476
1477 static void v4l_pix_format_touch(struct v4l2_pix_format *p)
1478 {
1479         /*
1480          * The v4l2_pix_format structure contains fields that make no sense for
1481          * touch. Set them to default values in this case.
1482          */
1483
1484         p->field = V4L2_FIELD_NONE;
1485         p->colorspace = V4L2_COLORSPACE_RAW;
1486         p->flags = 0;
1487         p->ycbcr_enc = 0;
1488         p->quantization = 0;
1489         p->xfer_func = 0;
1490 }
1491
1492 static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
1493                                 struct file *file, void *fh, void *arg)
1494 {
1495         struct v4l2_format *p = arg;
1496         struct video_device *vfd = video_devdata(file);
1497         bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1498         bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
1499         bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH;
1500         bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1501         bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
1502         int ret;
1503
1504         ret = v4l_enable_media_source(vfd);
1505         if (ret)
1506                 return ret;
1507         v4l_sanitize_format(p);
1508
1509         switch (p->type) {
1510         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1511                 if (unlikely(!is_rx || (!is_vid && !is_tch) || !ops->vidioc_s_fmt_vid_cap))
1512                         break;
1513                 CLEAR_AFTER_FIELD(p, fmt.pix);
1514                 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg);
1515                 /* just in case the driver zeroed it again */
1516                 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1517                 if (is_tch)
1518                         v4l_pix_format_touch(&p->fmt.pix);
1519                 return ret;
1520         case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1521                 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap_mplane))
1522                         break;
1523                 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
1524                 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
1525         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1526                 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_overlay))
1527                         break;
1528                 CLEAR_AFTER_FIELD(p, fmt.win);
1529                 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
1530         case V4L2_BUF_TYPE_VBI_CAPTURE:
1531                 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_vbi_cap))
1532                         break;
1533                 CLEAR_AFTER_FIELD(p, fmt.vbi);
1534                 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
1535         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1536                 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_cap))
1537                         break;
1538                 CLEAR_AFTER_FIELD(p, fmt.sliced);
1539                 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
1540         case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1541                 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out))
1542                         break;
1543                 CLEAR_AFTER_FIELD(p, fmt.pix);
1544                 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg);
1545                 /* just in case the driver zeroed it again */
1546                 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1547                 return ret;
1548         case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1549                 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_mplane))
1550                         break;
1551                 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
1552                 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
1553         case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1554                 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_overlay))
1555                         break;
1556                 CLEAR_AFTER_FIELD(p, fmt.win);
1557                 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
1558         case V4L2_BUF_TYPE_VBI_OUTPUT:
1559                 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_vbi_out))
1560                         break;
1561                 CLEAR_AFTER_FIELD(p, fmt.vbi);
1562                 return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
1563         case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1564                 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_out))
1565                         break;
1566                 CLEAR_AFTER_FIELD(p, fmt.sliced);
1567                 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
1568         case V4L2_BUF_TYPE_SDR_CAPTURE:
1569                 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_s_fmt_sdr_cap))
1570                         break;
1571                 CLEAR_AFTER_FIELD(p, fmt.sdr);
1572                 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg);
1573         case V4L2_BUF_TYPE_SDR_OUTPUT:
1574                 if (unlikely(!is_tx || !is_sdr || !ops->vidioc_s_fmt_sdr_out))
1575                         break;
1576                 CLEAR_AFTER_FIELD(p, fmt.sdr);
1577                 return ops->vidioc_s_fmt_sdr_out(file, fh, arg);
1578         case V4L2_BUF_TYPE_META_CAPTURE:
1579                 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_meta_cap))
1580                         break;
1581                 CLEAR_AFTER_FIELD(p, fmt.meta);
1582                 return ops->vidioc_s_fmt_meta_cap(file, fh, arg);
1583         }
1584         return -EINVAL;
1585 }
1586
1587 static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
1588                                 struct file *file, void *fh, void *arg)
1589 {
1590         struct v4l2_format *p = arg;
1591         struct video_device *vfd = video_devdata(file);
1592         bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1593         bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
1594         bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH;
1595         bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1596         bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
1597         int ret;
1598
1599         v4l_sanitize_format(p);
1600
1601         switch (p->type) {
1602         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1603                 if (unlikely(!is_rx || (!is_vid && !is_tch) || !ops->vidioc_try_fmt_vid_cap))
1604                         break;
1605                 CLEAR_AFTER_FIELD(p, fmt.pix);
1606                 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg);
1607                 /* just in case the driver zeroed it again */
1608                 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1609                 return ret;
1610         case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1611                 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap_mplane))
1612                         break;
1613                 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
1614                 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
1615         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1616                 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_overlay))
1617                         break;
1618                 CLEAR_AFTER_FIELD(p, fmt.win);
1619                 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
1620         case V4L2_BUF_TYPE_VBI_CAPTURE:
1621                 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_vbi_cap))
1622                         break;
1623                 CLEAR_AFTER_FIELD(p, fmt.vbi);
1624                 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
1625         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1626                 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_cap))
1627                         break;
1628                 CLEAR_AFTER_FIELD(p, fmt.sliced);
1629                 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
1630         case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1631                 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out))
1632                         break;
1633                 CLEAR_AFTER_FIELD(p, fmt.pix);
1634                 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg);
1635                 /* just in case the driver zeroed it again */
1636                 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1637                 return ret;
1638         case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1639                 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_mplane))
1640                         break;
1641                 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
1642                 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
1643         case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1644                 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_overlay))
1645                         break;
1646                 CLEAR_AFTER_FIELD(p, fmt.win);
1647                 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
1648         case V4L2_BUF_TYPE_VBI_OUTPUT:
1649                 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_vbi_out))
1650                         break;
1651                 CLEAR_AFTER_FIELD(p, fmt.vbi);
1652                 return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
1653         case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1654                 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_out))
1655                         break;
1656                 CLEAR_AFTER_FIELD(p, fmt.sliced);
1657                 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
1658         case V4L2_BUF_TYPE_SDR_CAPTURE:
1659                 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_try_fmt_sdr_cap))
1660                         break;
1661                 CLEAR_AFTER_FIELD(p, fmt.sdr);
1662                 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg);
1663         case V4L2_BUF_TYPE_SDR_OUTPUT:
1664                 if (unlikely(!is_tx || !is_sdr || !ops->vidioc_try_fmt_sdr_out))
1665                         break;
1666                 CLEAR_AFTER_FIELD(p, fmt.sdr);
1667                 return ops->vidioc_try_fmt_sdr_out(file, fh, arg);
1668         case V4L2_BUF_TYPE_META_CAPTURE:
1669                 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_meta_cap))
1670                         break;
1671                 CLEAR_AFTER_FIELD(p, fmt.meta);
1672                 return ops->vidioc_try_fmt_meta_cap(file, fh, arg);
1673         }
1674         return -EINVAL;
1675 }
1676
1677 static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
1678                                 struct file *file, void *fh, void *arg)
1679 {
1680         return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
1681 }
1682
1683 static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
1684                                 struct file *file, void *fh, void *arg)
1685 {
1686         return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
1687 }
1688
1689 static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,
1690                                 struct file *file, void *fh, void *arg)
1691 {
1692         struct video_device *vfd = video_devdata(file);
1693         struct v4l2_tuner *p = arg;
1694         int err;
1695
1696         p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1697                         V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1698         err = ops->vidioc_g_tuner(file, fh, p);
1699         if (!err)
1700                 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1701         return err;
1702 }
1703
1704 static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
1705                                 struct file *file, void *fh, void *arg)
1706 {
1707         struct video_device *vfd = video_devdata(file);
1708         struct v4l2_tuner *p = arg;
1709         int ret;
1710
1711         ret = v4l_enable_media_source(vfd);
1712         if (ret)
1713                 return ret;
1714         p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1715                         V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1716         return ops->vidioc_s_tuner(file, fh, p);
1717 }
1718
1719 static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,
1720                                 struct file *file, void *fh, void *arg)
1721 {
1722         struct video_device *vfd = video_devdata(file);
1723         struct v4l2_modulator *p = arg;
1724         int err;
1725
1726         if (vfd->vfl_type == VFL_TYPE_RADIO)
1727                 p->type = V4L2_TUNER_RADIO;
1728
1729         err = ops->vidioc_g_modulator(file, fh, p);
1730         if (!err)
1731                 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1732         return err;
1733 }
1734
1735 static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops,
1736                                 struct file *file, void *fh, void *arg)
1737 {
1738         struct video_device *vfd = video_devdata(file);
1739         struct v4l2_modulator *p = arg;
1740
1741         if (vfd->vfl_type == VFL_TYPE_RADIO)
1742                 p->type = V4L2_TUNER_RADIO;
1743
1744         return ops->vidioc_s_modulator(file, fh, p);
1745 }
1746
1747 static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
1748                                 struct file *file, void *fh, void *arg)
1749 {
1750         struct video_device *vfd = video_devdata(file);
1751         struct v4l2_frequency *p = arg;
1752
1753         if (vfd->vfl_type == VFL_TYPE_SDR)
1754                 p->type = V4L2_TUNER_SDR;
1755         else
1756                 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1757                                 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1758         return ops->vidioc_g_frequency(file, fh, p);
1759 }
1760
1761 static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
1762                                 struct file *file, void *fh, void *arg)
1763 {
1764         struct video_device *vfd = video_devdata(file);
1765         const struct v4l2_frequency *p = arg;
1766         enum v4l2_tuner_type type;
1767         int ret;
1768
1769         ret = v4l_enable_media_source(vfd);
1770         if (ret)
1771                 return ret;
1772         if (vfd->vfl_type == VFL_TYPE_SDR) {
1773                 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)
1774                         return -EINVAL;
1775         } else {
1776                 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1777                                 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1778                 if (type != p->type)
1779                         return -EINVAL;
1780         }
1781         return ops->vidioc_s_frequency(file, fh, p);
1782 }
1783
1784 static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
1785                                 struct file *file, void *fh, void *arg)
1786 {
1787         struct video_device *vfd = video_devdata(file);
1788         struct v4l2_standard *p = arg;
1789         v4l2_std_id id = vfd->tvnorms, curr_id = 0;
1790         unsigned int index = p->index, i, j = 0;
1791         const char *descr = "";
1792
1793         /* Return -ENODATA if the tvnorms for the current input
1794            or output is 0, meaning that it doesn't support this API. */
1795         if (id == 0)
1796                 return -ENODATA;
1797
1798         /* Return norm array in a canonical way */
1799         for (i = 0; i <= index && id; i++) {
1800                 /* last std value in the standards array is 0, so this
1801                    while always ends there since (id & 0) == 0. */
1802                 while ((id & standards[j].std) != standards[j].std)
1803                         j++;
1804                 curr_id = standards[j].std;
1805                 descr = standards[j].descr;
1806                 j++;
1807                 if (curr_id == 0)
1808                         break;
1809                 if (curr_id != V4L2_STD_PAL &&
1810                                 curr_id != V4L2_STD_SECAM &&
1811                                 curr_id != V4L2_STD_NTSC)
1812                         id &= ~curr_id;
1813         }
1814         if (i <= index)
1815                 return -EINVAL;
1816
1817         v4l2_video_std_construct(p, curr_id, descr);
1818         return 0;
1819 }
1820
1821 static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
1822                                 struct file *file, void *fh, void *arg)
1823 {
1824         struct video_device *vfd = video_devdata(file);
1825         v4l2_std_id id = *(v4l2_std_id *)arg, norm;
1826         int ret;
1827
1828         ret = v4l_enable_media_source(vfd);
1829         if (ret)
1830                 return ret;
1831         norm = id & vfd->tvnorms;
1832         if (vfd->tvnorms && !norm)      /* Check if std is supported */
1833                 return -EINVAL;
1834
1835         /* Calls the specific handler */
1836         return ops->vidioc_s_std(file, fh, norm);
1837 }
1838
1839 static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
1840                                 struct file *file, void *fh, void *arg)
1841 {
1842         struct video_device *vfd = video_devdata(file);
1843         v4l2_std_id *p = arg;
1844         int ret;
1845
1846         ret = v4l_enable_media_source(vfd);
1847         if (ret)
1848                 return ret;
1849         /*
1850          * If no signal is detected, then the driver should return
1851          * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with
1852          * any standards that do not apply removed.
1853          *
1854          * This means that tuners, audio and video decoders can join
1855          * their efforts to improve the standards detection.
1856          */
1857         *p = vfd->tvnorms;
1858         return ops->vidioc_querystd(file, fh, arg);
1859 }
1860
1861 static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
1862                                 struct file *file, void *fh, void *arg)
1863 {
1864         struct video_device *vfd = video_devdata(file);
1865         struct v4l2_hw_freq_seek *p = arg;
1866         enum v4l2_tuner_type type;
1867         int ret;
1868
1869         ret = v4l_enable_media_source(vfd);
1870         if (ret)
1871                 return ret;
1872         /* s_hw_freq_seek is not supported for SDR for now */
1873         if (vfd->vfl_type == VFL_TYPE_SDR)
1874                 return -EINVAL;
1875
1876         type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1877                 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1878         if (p->type != type)
1879                 return -EINVAL;
1880         return ops->vidioc_s_hw_freq_seek(file, fh, p);
1881 }
1882
1883 static int v4l_overlay(const struct v4l2_ioctl_ops *ops,
1884                                 struct file *file, void *fh, void *arg)
1885 {
1886         return ops->vidioc_overlay(file, fh, *(unsigned int *)arg);
1887 }
1888
1889 static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,
1890                                 struct file *file, void *fh, void *arg)
1891 {
1892         struct v4l2_requestbuffers *p = arg;
1893         int ret = check_fmt(file, p->type);
1894
1895         if (ret)
1896                 return ret;
1897
1898         CLEAR_AFTER_FIELD(p, memory);
1899
1900         return ops->vidioc_reqbufs(file, fh, p);
1901 }
1902
1903 static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,
1904                                 struct file *file, void *fh, void *arg)
1905 {
1906         struct v4l2_buffer *p = arg;
1907         int ret = check_fmt(file, p->type);
1908
1909         return ret ? ret : ops->vidioc_querybuf(file, fh, p);
1910 }
1911
1912 static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,
1913                                 struct file *file, void *fh, void *arg)
1914 {
1915         struct v4l2_buffer *p = arg;
1916         int ret = check_fmt(file, p->type);
1917
1918         return ret ? ret : ops->vidioc_qbuf(file, fh, p);
1919 }
1920
1921 static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,
1922                                 struct file *file, void *fh, void *arg)
1923 {
1924         struct v4l2_buffer *p = arg;
1925         int ret = check_fmt(file, p->type);
1926
1927         return ret ? ret : ops->vidioc_dqbuf(file, fh, p);
1928 }
1929
1930 static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
1931                                 struct file *file, void *fh, void *arg)
1932 {
1933         struct v4l2_create_buffers *create = arg;
1934         int ret = check_fmt(file, create->format.type);
1935
1936         if (ret)
1937                 return ret;
1938
1939         CLEAR_AFTER_FIELD(create, format);
1940
1941         v4l_sanitize_format(&create->format);
1942
1943         ret = ops->vidioc_create_bufs(file, fh, create);
1944
1945         if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1946             create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1947                 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1948
1949         return ret;
1950 }
1951
1952 static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
1953                                 struct file *file, void *fh, void *arg)
1954 {
1955         struct v4l2_buffer *b = arg;
1956         int ret = check_fmt(file, b->type);
1957
1958         return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
1959 }
1960
1961 static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
1962                                 struct file *file, void *fh, void *arg)
1963 {
1964         struct v4l2_streamparm *p = arg;
1965         v4l2_std_id std;
1966         int ret = check_fmt(file, p->type);
1967
1968         if (ret)
1969                 return ret;
1970         if (ops->vidioc_g_parm)
1971                 return ops->vidioc_g_parm(file, fh, p);
1972         if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1973             p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1974                 return -EINVAL;
1975         p->parm.capture.readbuffers = 2;
1976         ret = ops->vidioc_g_std(file, fh, &std);
1977         if (ret == 0)
1978                 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe);
1979         return ret;
1980 }
1981
1982 static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
1983                                 struct file *file, void *fh, void *arg)
1984 {
1985         struct v4l2_streamparm *p = arg;
1986         int ret = check_fmt(file, p->type);
1987
1988         return ret ? ret : ops->vidioc_s_parm(file, fh, p);
1989 }
1990
1991 static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,
1992                                 struct file *file, void *fh, void *arg)
1993 {
1994         struct video_device *vfd = video_devdata(file);
1995         struct v4l2_queryctrl *p = arg;
1996         struct v4l2_fh *vfh =
1997                 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1998
1999         if (vfh && vfh->ctrl_handler)
2000                 return v4l2_queryctrl(vfh->ctrl_handler, p);
2001         if (vfd->ctrl_handler)
2002                 return v4l2_queryctrl(vfd->ctrl_handler, p);
2003         if (ops->vidioc_queryctrl)
2004                 return ops->vidioc_queryctrl(file, fh, p);
2005         return -ENOTTY;
2006 }
2007
2008 static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops,
2009                                 struct file *file, void *fh, void *arg)
2010 {
2011         struct video_device *vfd = video_devdata(file);
2012         struct v4l2_query_ext_ctrl *p = arg;
2013         struct v4l2_fh *vfh =
2014                 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2015
2016         if (vfh && vfh->ctrl_handler)
2017                 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p);
2018         if (vfd->ctrl_handler)
2019                 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p);
2020         if (ops->vidioc_query_ext_ctrl)
2021                 return ops->vidioc_query_ext_ctrl(file, fh, p);
2022         return -ENOTTY;
2023 }
2024
2025 static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,
2026                                 struct file *file, void *fh, void *arg)
2027 {
2028         struct video_device *vfd = video_devdata(file);
2029         struct v4l2_querymenu *p = arg;
2030         struct v4l2_fh *vfh =
2031                 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2032
2033         if (vfh && vfh->ctrl_handler)
2034                 return v4l2_querymenu(vfh->ctrl_handler, p);
2035         if (vfd->ctrl_handler)
2036                 return v4l2_querymenu(vfd->ctrl_handler, p);
2037         if (ops->vidioc_querymenu)
2038                 return ops->vidioc_querymenu(file, fh, p);
2039         return -ENOTTY;
2040 }
2041
2042 static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops,
2043                                 struct file *file, void *fh, void *arg)
2044 {
2045         struct video_device *vfd = video_devdata(file);
2046         struct v4l2_control *p = arg;
2047         struct v4l2_fh *vfh =
2048                 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2049         struct v4l2_ext_controls ctrls;
2050         struct v4l2_ext_control ctrl;
2051
2052         if (vfh && vfh->ctrl_handler)
2053                 return v4l2_g_ctrl(vfh->ctrl_handler, p);
2054         if (vfd->ctrl_handler)
2055                 return v4l2_g_ctrl(vfd->ctrl_handler, p);
2056         if (ops->vidioc_g_ctrl)
2057                 return ops->vidioc_g_ctrl(file, fh, p);
2058         if (ops->vidioc_g_ext_ctrls == NULL)
2059                 return -ENOTTY;
2060
2061         ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
2062         ctrls.count = 1;
2063         ctrls.controls = &ctrl;
2064         ctrl.id = p->id;
2065         ctrl.value = p->value;
2066         if (check_ext_ctrls(&ctrls, 1)) {
2067                 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
2068
2069                 if (ret == 0)
2070                         p->value = ctrl.value;
2071                 return ret;
2072         }
2073         return -EINVAL;
2074 }
2075
2076 static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,
2077                                 struct file *file, void *fh, void *arg)
2078 {
2079         struct video_device *vfd = video_devdata(file);
2080         struct v4l2_control *p = arg;
2081         struct v4l2_fh *vfh =
2082                 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2083         struct v4l2_ext_controls ctrls;
2084         struct v4l2_ext_control ctrl;
2085
2086         if (vfh && vfh->ctrl_handler)
2087                 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
2088         if (vfd->ctrl_handler)
2089                 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
2090         if (ops->vidioc_s_ctrl)
2091                 return ops->vidioc_s_ctrl(file, fh, p);
2092         if (ops->vidioc_s_ext_ctrls == NULL)
2093                 return -ENOTTY;
2094
2095         ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
2096         ctrls.count = 1;
2097         ctrls.controls = &ctrl;
2098         ctrl.id = p->id;
2099         ctrl.value = p->value;
2100         if (check_ext_ctrls(&ctrls, 1))
2101                 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
2102         return -EINVAL;
2103 }
2104
2105 static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2106                                 struct file *file, void *fh, void *arg)
2107 {
2108         struct video_device *vfd = video_devdata(file);
2109         struct v4l2_ext_controls *p = arg;
2110         struct v4l2_fh *vfh =
2111                 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2112
2113         p->error_idx = p->count;
2114         if (vfh && vfh->ctrl_handler)
2115                 return v4l2_g_ext_ctrls(vfh->ctrl_handler, p);
2116         if (vfd->ctrl_handler)
2117                 return v4l2_g_ext_ctrls(vfd->ctrl_handler, p);
2118         if (ops->vidioc_g_ext_ctrls == NULL)
2119                 return -ENOTTY;
2120         return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :
2121                                         -EINVAL;
2122 }
2123
2124 static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2125                                 struct file *file, void *fh, void *arg)
2126 {
2127         struct video_device *vfd = video_devdata(file);
2128         struct v4l2_ext_controls *p = arg;
2129         struct v4l2_fh *vfh =
2130                 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2131
2132         p->error_idx = p->count;
2133         if (vfh && vfh->ctrl_handler)
2134                 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, p);
2135         if (vfd->ctrl_handler)
2136                 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, p);
2137         if (ops->vidioc_s_ext_ctrls == NULL)
2138                 return -ENOTTY;
2139         return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :
2140                                         -EINVAL;
2141 }
2142
2143 static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2144                                 struct file *file, void *fh, void *arg)
2145 {
2146         struct video_device *vfd = video_devdata(file);
2147         struct v4l2_ext_controls *p = arg;
2148         struct v4l2_fh *vfh =
2149                 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2150
2151         p->error_idx = p->count;
2152         if (vfh && vfh->ctrl_handler)
2153                 return v4l2_try_ext_ctrls(vfh->ctrl_handler, p);
2154         if (vfd->ctrl_handler)
2155                 return v4l2_try_ext_ctrls(vfd->ctrl_handler, p);
2156         if (ops->vidioc_try_ext_ctrls == NULL)
2157                 return -ENOTTY;
2158         return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :
2159                                         -EINVAL;
2160 }
2161
2162 /*
2163  * The selection API specified originally that the _MPLANE buffer types
2164  * shouldn't be used. The reasons for this are lost in the mists of time
2165  * (or just really crappy memories). Regardless, this is really annoying
2166  * for userspace. So to keep things simple we map _MPLANE buffer types
2167  * to their 'regular' counterparts before calling the driver. And we
2168  * restore it afterwards. This way applications can use either buffer
2169  * type and drivers don't need to check for both.
2170  */
2171 static int v4l_g_selection(const struct v4l2_ioctl_ops *ops,
2172                            struct file *file, void *fh, void *arg)
2173 {
2174         struct v4l2_selection *p = arg;
2175         u32 old_type = p->type;
2176         int ret;
2177
2178         if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2179                 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2180         else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2181                 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2182         ret = ops->vidioc_g_selection(file, fh, p);
2183         p->type = old_type;
2184         return ret;
2185 }
2186
2187 static int v4l_s_selection(const struct v4l2_ioctl_ops *ops,
2188                            struct file *file, void *fh, void *arg)
2189 {
2190         struct v4l2_selection *p = arg;
2191         u32 old_type = p->type;
2192         int ret;
2193
2194         if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2195                 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2196         else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2197                 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2198         ret = ops->vidioc_s_selection(file, fh, p);
2199         p->type = old_type;
2200         return ret;
2201 }
2202
2203 static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
2204                                 struct file *file, void *fh, void *arg)
2205 {
2206         struct v4l2_crop *p = arg;
2207         struct v4l2_selection s = {
2208                 .type = p->type,
2209         };
2210         int ret;
2211
2212         if (ops->vidioc_g_crop)
2213                 return ops->vidioc_g_crop(file, fh, p);
2214         /* simulate capture crop using selection api */
2215
2216         /* crop means compose for output devices */
2217         if (V4L2_TYPE_IS_OUTPUT(p->type))
2218                 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
2219         else
2220                 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
2221
2222         ret = v4l_g_selection(ops, file, fh, &s);
2223
2224         /* copying results to old structure on success */
2225         if (!ret)
2226                 p->c = s.r;
2227         return ret;
2228 }
2229
2230 static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
2231                                 struct file *file, void *fh, void *arg)
2232 {
2233         struct v4l2_crop *p = arg;
2234         struct v4l2_selection s = {
2235                 .type = p->type,
2236                 .r = p->c,
2237         };
2238
2239         if (ops->vidioc_s_crop)
2240                 return ops->vidioc_s_crop(file, fh, p);
2241         /* simulate capture crop using selection api */
2242
2243         /* crop means compose for output devices */
2244         if (V4L2_TYPE_IS_OUTPUT(p->type))
2245                 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
2246         else
2247                 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
2248
2249         return v4l_s_selection(ops, file, fh, &s);
2250 }
2251
2252 static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
2253                                 struct file *file, void *fh, void *arg)
2254 {
2255         struct v4l2_cropcap *p = arg;
2256         struct v4l2_selection s = { .type = p->type };
2257         int ret = 0;
2258
2259         /* setting trivial pixelaspect */
2260         p->pixelaspect.numerator = 1;
2261         p->pixelaspect.denominator = 1;
2262
2263         /*
2264          * The determine_valid_ioctls() call already should ensure
2265          * that this can never happen, but just in case...
2266          */
2267         if (WARN_ON(!ops->vidioc_cropcap && !ops->vidioc_g_selection))
2268                 return -ENOTTY;
2269
2270         if (ops->vidioc_cropcap)
2271                 ret = ops->vidioc_cropcap(file, fh, p);
2272
2273         if (!ops->vidioc_g_selection)
2274                 return ret;
2275
2276         /*
2277          * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the
2278          * square pixel aspect ratio in that case.
2279          */
2280         if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD)
2281                 return ret;
2282
2283         /* Use g_selection() to fill in the bounds and defrect rectangles */
2284
2285         /* obtaining bounds */
2286         if (V4L2_TYPE_IS_OUTPUT(p->type))
2287                 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
2288         else
2289                 s.target = V4L2_SEL_TGT_CROP_BOUNDS;
2290
2291         ret = v4l_g_selection(ops, file, fh, &s);
2292         if (ret)
2293                 return ret;
2294         p->bounds = s.r;
2295
2296         /* obtaining defrect */
2297         if (V4L2_TYPE_IS_OUTPUT(p->type))
2298                 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
2299         else
2300                 s.target = V4L2_SEL_TGT_CROP_DEFAULT;
2301
2302         ret = v4l_g_selection(ops, file, fh, &s);
2303         if (ret)
2304                 return ret;
2305         p->defrect = s.r;
2306
2307         return 0;
2308 }
2309
2310 static int v4l_log_status(const struct v4l2_ioctl_ops *ops,
2311                                 struct file *file, void *fh, void *arg)
2312 {
2313         struct video_device *vfd = video_devdata(file);
2314         int ret;
2315
2316         if (vfd->v4l2_dev)
2317                 pr_info("%s: =================  START STATUS  =================\n",
2318                         vfd->v4l2_dev->name);
2319         ret = ops->vidioc_log_status(file, fh);
2320         if (vfd->v4l2_dev)
2321                 pr_info("%s: ==================  END STATUS  ==================\n",
2322                         vfd->v4l2_dev->name);
2323         return ret;
2324 }
2325
2326 static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
2327                                 struct file *file, void *fh, void *arg)
2328 {
2329 #ifdef CONFIG_VIDEO_ADV_DEBUG
2330         struct v4l2_dbg_register *p = arg;
2331         struct video_device *vfd = video_devdata(file);
2332         struct v4l2_subdev *sd;
2333         int idx = 0;
2334
2335         if (!capable(CAP_SYS_ADMIN))
2336                 return -EPERM;
2337         if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2338                 if (vfd->v4l2_dev == NULL)
2339                         return -EINVAL;
2340                 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2341                         if (p->match.addr == idx++)
2342                                 return v4l2_subdev_call(sd, core, g_register, p);
2343                 return -EINVAL;
2344         }
2345         if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2346             (ops->vidioc_g_chip_info || p->match.addr == 0))
2347                 return ops->vidioc_g_register(file, fh, p);
2348         return -EINVAL;
2349 #else
2350         return -ENOTTY;
2351 #endif
2352 }
2353
2354 static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
2355                                 struct file *file, void *fh, void *arg)
2356 {
2357 #ifdef CONFIG_VIDEO_ADV_DEBUG
2358         const struct v4l2_dbg_register *p = arg;
2359         struct video_device *vfd = video_devdata(file);
2360         struct v4l2_subdev *sd;
2361         int idx = 0;
2362
2363         if (!capable(CAP_SYS_ADMIN))
2364                 return -EPERM;
2365         if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2366                 if (vfd->v4l2_dev == NULL)
2367                         return -EINVAL;
2368                 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2369                         if (p->match.addr == idx++)
2370                                 return v4l2_subdev_call(sd, core, s_register, p);
2371                 return -EINVAL;
2372         }
2373         if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2374             (ops->vidioc_g_chip_info || p->match.addr == 0))
2375                 return ops->vidioc_s_register(file, fh, p);
2376         return -EINVAL;
2377 #else
2378         return -ENOTTY;
2379 #endif
2380 }
2381
2382 static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,
2383                                 struct file *file, void *fh, void *arg)
2384 {
2385 #ifdef CONFIG_VIDEO_ADV_DEBUG
2386         struct video_device *vfd = video_devdata(file);
2387         struct v4l2_dbg_chip_info *p = arg;
2388         struct v4l2_subdev *sd;
2389         int idx = 0;
2390
2391         switch (p->match.type) {
2392         case V4L2_CHIP_MATCH_BRIDGE:
2393                 if (ops->vidioc_s_register)
2394                         p->flags |= V4L2_CHIP_FL_WRITABLE;
2395                 if (ops->vidioc_g_register)
2396                         p->flags |= V4L2_CHIP_FL_READABLE;
2397                 strlcpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));
2398                 if (ops->vidioc_g_chip_info)
2399                         return ops->vidioc_g_chip_info(file, fh, arg);
2400                 if (p->match.addr)
2401                         return -EINVAL;
2402                 return 0;
2403
2404         case V4L2_CHIP_MATCH_SUBDEV:
2405                 if (vfd->v4l2_dev == NULL)
2406                         break;
2407                 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {
2408                         if (p->match.addr != idx++)
2409                                 continue;
2410                         if (sd->ops->core && sd->ops->core->s_register)
2411                                 p->flags |= V4L2_CHIP_FL_WRITABLE;
2412                         if (sd->ops->core && sd->ops->core->g_register)
2413                                 p->flags |= V4L2_CHIP_FL_READABLE;
2414                         strlcpy(p->name, sd->name, sizeof(p->name));
2415                         return 0;
2416                 }
2417                 break;
2418         }
2419         return -EINVAL;
2420 #else
2421         return -ENOTTY;
2422 #endif
2423 }
2424
2425 static int v4l_dqevent(const struct v4l2_ioctl_ops *ops,
2426                                 struct file *file, void *fh, void *arg)
2427 {
2428         return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK);
2429 }
2430
2431 static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,
2432                                 struct file *file, void *fh, void *arg)
2433 {
2434         return ops->vidioc_subscribe_event(fh, arg);
2435 }
2436
2437 static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,
2438                                 struct file *file, void *fh, void *arg)
2439 {
2440         return ops->vidioc_unsubscribe_event(fh, arg);
2441 }
2442
2443 static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,
2444                                 struct file *file, void *fh, void *arg)
2445 {
2446         struct v4l2_sliced_vbi_cap *p = arg;
2447         int ret = check_fmt(file, p->type);
2448
2449         if (ret)
2450                 return ret;
2451
2452         /* Clear up to type, everything after type is zeroed already */
2453         memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
2454
2455         return ops->vidioc_g_sliced_vbi_cap(file, fh, p);
2456 }
2457
2458 static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
2459                                 struct file *file, void *fh, void *arg)
2460 {
2461         struct video_device *vfd = video_devdata(file);
2462         struct v4l2_frequency_band *p = arg;
2463         enum v4l2_tuner_type type;
2464         int err;
2465
2466         if (vfd->vfl_type == VFL_TYPE_SDR) {
2467                 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)
2468                         return -EINVAL;
2469                 type = p->type;
2470         } else {
2471                 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2472                                 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2473                 if (type != p->type)
2474                         return -EINVAL;
2475         }
2476         if (ops->vidioc_enum_freq_bands) {
2477                 err = ops->vidioc_enum_freq_bands(file, fh, p);
2478                 if (err != -ENOTTY)
2479                         return err;
2480         }
2481         if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) {
2482                 struct v4l2_tuner t = {
2483                         .index = p->tuner,
2484                         .type = type,
2485                 };
2486
2487                 if (p->index)
2488                         return -EINVAL;
2489                 err = ops->vidioc_g_tuner(file, fh, &t);
2490                 if (err)
2491                         return err;
2492                 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2493                 p->rangelow = t.rangelow;
2494                 p->rangehigh = t.rangehigh;
2495                 p->modulation = (type == V4L2_TUNER_RADIO) ?
2496                         V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2497                 return 0;
2498         }
2499         if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) {
2500                 struct v4l2_modulator m = {
2501                         .index = p->tuner,
2502                 };
2503
2504                 if (type != V4L2_TUNER_RADIO)
2505                         return -EINVAL;
2506                 if (p->index)
2507                         return -EINVAL;
2508                 err = ops->vidioc_g_modulator(file, fh, &m);
2509                 if (err)
2510                         return err;
2511                 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2512                 p->rangelow = m.rangelow;
2513                 p->rangehigh = m.rangehigh;
2514                 p->modulation = (type == V4L2_TUNER_RADIO) ?
2515                         V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2516                 return 0;
2517         }
2518         return -ENOTTY;
2519 }
2520
2521 struct v4l2_ioctl_info {
2522         unsigned int ioctl;
2523         u32 flags;
2524         const char * const name;
2525         union {
2526                 u32 offset;
2527                 int (*func)(const struct v4l2_ioctl_ops *ops,
2528                                 struct file *file, void *fh, void *p);
2529         } u;
2530         void (*debug)(const void *arg, bool write_only);
2531 };
2532
2533 /* This control needs a priority check */
2534 #define INFO_FL_PRIO            (1 << 0)
2535 /* This control can be valid if the filehandle passes a control handler. */
2536 #define INFO_FL_CTRL            (1 << 1)
2537 /* This is a standard ioctl, no need for special code */
2538 #define INFO_FL_STD             (1 << 2)
2539 /* This is ioctl has its own function */
2540 #define INFO_FL_FUNC            (1 << 3)
2541 /* Queuing ioctl */
2542 #define INFO_FL_QUEUE           (1 << 4)
2543 /* Always copy back result, even on error */
2544 #define INFO_FL_ALWAYS_COPY     (1 << 5)
2545 /* Zero struct from after the field to the end */
2546 #define INFO_FL_CLEAR(v4l2_struct, field)                       \
2547         ((offsetof(struct v4l2_struct, field) +                 \
2548           sizeof(((struct v4l2_struct *)0)->field)) << 16)
2549 #define INFO_FL_CLEAR_MASK      (_IOC_SIZEMASK << 16)
2550
2551 #define IOCTL_INFO_STD(_ioctl, _vidioc, _debug, _flags)                 \
2552         [_IOC_NR(_ioctl)] = {                                           \
2553                 .ioctl = _ioctl,                                        \
2554                 .flags = _flags | INFO_FL_STD,                          \
2555                 .name = #_ioctl,                                        \
2556                 .u.offset = offsetof(struct v4l2_ioctl_ops, _vidioc),   \
2557                 .debug = _debug,                                        \
2558         }
2559
2560 #define IOCTL_INFO_FNC(_ioctl, _func, _debug, _flags)                   \
2561         [_IOC_NR(_ioctl)] = {                                           \
2562                 .ioctl = _ioctl,                                        \
2563                 .flags = _flags | INFO_FL_FUNC,                         \
2564                 .name = #_ioctl,                                        \
2565                 .u.func = _func,                                        \
2566                 .debug = _debug,                                        \
2567         }
2568
2569 static struct v4l2_ioctl_info v4l2_ioctls[] = {
2570         IOCTL_INFO_FNC(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
2571         IOCTL_INFO_FNC(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)),
2572         IOCTL_INFO_FNC(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0),
2573         IOCTL_INFO_FNC(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
2574         IOCTL_INFO_FNC(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2575         IOCTL_INFO_FNC(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
2576         IOCTL_INFO_STD(VIDIOC_G_FBUF, vidioc_g_fbuf, v4l_print_framebuffer, 0),
2577         IOCTL_INFO_STD(VIDIOC_S_FBUF, vidioc_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
2578         IOCTL_INFO_FNC(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO),
2579         IOCTL_INFO_FNC(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),
2580         IOCTL_INFO_STD(VIDIOC_EXPBUF, vidioc_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)),
2581         IOCTL_INFO_FNC(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),
2582         IOCTL_INFO_FNC(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2583         IOCTL_INFO_FNC(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2584         IOCTL_INFO_FNC(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
2585         IOCTL_INFO_FNC(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
2586         IOCTL_INFO_STD(VIDIOC_G_STD, vidioc_g_std, v4l_print_std, 0),
2587         IOCTL_INFO_FNC(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
2588         IOCTL_INFO_FNC(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
2589         IOCTL_INFO_FNC(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
2590         IOCTL_INFO_FNC(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
2591         IOCTL_INFO_FNC(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
2592         IOCTL_INFO_FNC(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
2593         IOCTL_INFO_FNC(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
2594         IOCTL_INFO_STD(VIDIOC_G_AUDIO, vidioc_g_audio, v4l_print_audio, 0),
2595         IOCTL_INFO_STD(VIDIOC_S_AUDIO, vidioc_s_audio, v4l_print_audio, INFO_FL_PRIO),
2596         IOCTL_INFO_FNC(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
2597         IOCTL_INFO_FNC(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
2598         IOCTL_INFO_STD(VIDIOC_G_INPUT, vidioc_g_input, v4l_print_u32, 0),
2599         IOCTL_INFO_FNC(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
2600         IOCTL_INFO_STD(VIDIOC_G_EDID, vidioc_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY),
2601         IOCTL_INFO_STD(VIDIOC_S_EDID, vidioc_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY),
2602         IOCTL_INFO_STD(VIDIOC_G_OUTPUT, vidioc_g_output, v4l_print_u32, 0),
2603         IOCTL_INFO_FNC(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
2604         IOCTL_INFO_FNC(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
2605         IOCTL_INFO_STD(VIDIOC_G_AUDOUT, vidioc_g_audout, v4l_print_audioout, 0),
2606         IOCTL_INFO_STD(VIDIOC_S_AUDOUT, vidioc_s_audout, v4l_print_audioout, INFO_FL_PRIO),
2607         IOCTL_INFO_FNC(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
2608         IOCTL_INFO_FNC(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
2609         IOCTL_INFO_FNC(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
2610         IOCTL_INFO_FNC(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
2611         IOCTL_INFO_FNC(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
2612         IOCTL_INFO_FNC(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
2613         IOCTL_INFO_FNC(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
2614         IOCTL_INFO_FNC(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)),
2615         IOCTL_INFO_FNC(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)),
2616         IOCTL_INFO_STD(VIDIOC_G_JPEGCOMP, vidioc_g_jpegcomp, v4l_print_jpegcompression, 0),
2617         IOCTL_INFO_STD(VIDIOC_S_JPEGCOMP, vidioc_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
2618         IOCTL_INFO_FNC(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
2619         IOCTL_INFO_FNC(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
2620         IOCTL_INFO_STD(VIDIOC_ENUMAUDIO, vidioc_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
2621         IOCTL_INFO_STD(VIDIOC_ENUMAUDOUT, vidioc_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
2622         IOCTL_INFO_FNC(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
2623         IOCTL_INFO_FNC(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
2624         IOCTL_INFO_FNC(VIDIOC_G_SLICED_VBI_CAP, v4l_g_sliced_vbi_cap, v4l_print_sliced_vbi_cap, INFO_FL_CLEAR(v4l2_sliced_vbi_cap, type)),
2625         IOCTL_INFO_FNC(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
2626         IOCTL_INFO_FNC(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2627         IOCTL_INFO_FNC(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL),
2628         IOCTL_INFO_FNC(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2629         IOCTL_INFO_STD(VIDIOC_ENUM_FRAMESIZES, vidioc_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
2630         IOCTL_INFO_STD(VIDIOC_ENUM_FRAMEINTERVALS, vidioc_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
2631         IOCTL_INFO_STD(VIDIOC_G_ENC_INDEX, vidioc_g_enc_index, v4l_print_enc_idx, 0),
2632         IOCTL_INFO_STD(VIDIOC_ENCODER_CMD, vidioc_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2633         IOCTL_INFO_STD(VIDIOC_TRY_ENCODER_CMD, vidioc_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2634         IOCTL_INFO_STD(VIDIOC_DECODER_CMD, vidioc_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
2635         IOCTL_INFO_STD(VIDIOC_TRY_DECODER_CMD, vidioc_try_decoder_cmd, v4l_print_decoder_cmd, 0),
2636         IOCTL_INFO_FNC(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
2637         IOCTL_INFO_FNC(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
2638         IOCTL_INFO_FNC(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
2639         IOCTL_INFO_STD(VIDIOC_S_DV_TIMINGS, vidioc_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_dv_timings, bt.flags)),
2640         IOCTL_INFO_STD(VIDIOC_G_DV_TIMINGS, vidioc_g_dv_timings, v4l_print_dv_timings, 0),
2641         IOCTL_INFO_FNC(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
2642         IOCTL_INFO_FNC(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
2643         IOCTL_INFO_FNC(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
2644         IOCTL_INFO_FNC(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2645         IOCTL_INFO_FNC(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
2646         IOCTL_INFO_STD(VIDIOC_ENUM_DV_TIMINGS, vidioc_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)),
2647         IOCTL_INFO_STD(VIDIOC_QUERY_DV_TIMINGS, vidioc_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY),
2648         IOCTL_INFO_STD(VIDIOC_DV_TIMINGS_CAP, vidioc_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, type)),
2649         IOCTL_INFO_FNC(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
2650         IOCTL_INFO_FNC(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
2651         IOCTL_INFO_FNC(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
2652 };
2653 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
2654
2655 bool v4l2_is_known_ioctl(unsigned int cmd)
2656 {
2657         if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2658                 return false;
2659         return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
2660 }
2661
2662 struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd)
2663 {
2664         if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2665                 return vdev->lock;
2666         if (test_bit(_IOC_NR(cmd), vdev->disable_locking))
2667                 return NULL;
2668         if (vdev->queue && vdev->queue->lock &&
2669                         (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
2670                 return vdev->queue->lock;
2671         return vdev->lock;
2672 }
2673
2674 /* Common ioctl debug function. This function can be used by
2675    external ioctl messages as well as internal V4L ioctl */
2676 void v4l_printk_ioctl(const char *prefix, unsigned int cmd)
2677 {
2678         const char *dir, *type;
2679
2680         if (prefix)
2681                 printk(KERN_DEBUG "%s: ", prefix);
2682
2683         switch (_IOC_TYPE(cmd)) {
2684         case 'd':
2685                 type = "v4l2_int";
2686                 break;
2687         case 'V':
2688                 if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
2689                         type = "v4l2";
2690                         break;
2691                 }
2692                 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
2693                 return;
2694         default:
2695                 type = "unknown";
2696                 break;
2697         }
2698
2699         switch (_IOC_DIR(cmd)) {
2700         case _IOC_NONE:              dir = "--"; break;
2701         case _IOC_READ:              dir = "r-"; break;
2702         case _IOC_WRITE:             dir = "-w"; break;
2703         case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
2704         default:                     dir = "*ERR*"; break;
2705         }
2706         pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
2707                 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
2708 }
2709 EXPORT_SYMBOL(v4l_printk_ioctl);
2710
2711 static long __video_do_ioctl(struct file *file,
2712                 unsigned int cmd, void *arg)
2713 {
2714         struct video_device *vfd = video_devdata(file);
2715         const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
2716         bool write_only = false;
2717         struct v4l2_ioctl_info default_info;
2718         const struct v4l2_ioctl_info *info;
2719         void *fh = file->private_data;
2720         struct v4l2_fh *vfh = NULL;
2721         int dev_debug = vfd->dev_debug;
2722         long ret = -ENOTTY;
2723
2724         if (ops == NULL) {
2725                 pr_warn("%s: has no ioctl_ops.\n",
2726                                 video_device_node_name(vfd));
2727                 return ret;
2728         }
2729
2730         if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
2731                 vfh = file->private_data;
2732
2733         if (v4l2_is_known_ioctl(cmd)) {
2734                 info = &v4l2_ioctls[_IOC_NR(cmd)];
2735
2736                 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) &&
2737                     !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
2738                         goto done;
2739
2740                 if (vfh && (info->flags & INFO_FL_PRIO)) {
2741                         ret = v4l2_prio_check(vfd->prio, vfh->prio);
2742                         if (ret)
2743                                 goto done;
2744                 }
2745         } else {
2746                 default_info.ioctl = cmd;
2747                 default_info.flags = 0;
2748                 default_info.debug = v4l_print_default;
2749                 info = &default_info;
2750         }
2751
2752         write_only = _IOC_DIR(cmd) == _IOC_WRITE;
2753         if (info->flags & INFO_FL_STD) {
2754                 typedef int (*vidioc_op)(struct file *file, void *fh, void *p);
2755                 const void *p = vfd->ioctl_ops;
2756                 const vidioc_op *vidioc = p + info->u.offset;
2757
2758                 ret = (*vidioc)(file, fh, arg);
2759         } else if (info->flags & INFO_FL_FUNC) {
2760                 ret = info->u.func(ops, file, fh, arg);
2761         } else if (!ops->vidioc_default) {
2762                 ret = -ENOTTY;
2763         } else {
2764                 ret = ops->vidioc_default(file, fh,
2765                         vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
2766                         cmd, arg);
2767         }
2768
2769 done:
2770         if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) {
2771                 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) &&
2772                     (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF))
2773                         return ret;
2774
2775                 v4l_printk_ioctl(video_device_node_name(vfd), cmd);
2776                 if (ret < 0)
2777                         pr_cont(": error %ld", ret);
2778                 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG))
2779                         pr_cont("\n");
2780                 else if (_IOC_DIR(cmd) == _IOC_NONE)
2781                         info->debug(arg, write_only);
2782                 else {
2783                         pr_cont(": ");
2784                         info->debug(arg, write_only);
2785                 }
2786         }
2787
2788         return ret;
2789 }
2790
2791 static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
2792                             void __user **user_ptr, void ***kernel_ptr)
2793 {
2794         int ret = 0;
2795
2796         switch (cmd) {
2797         case VIDIOC_PREPARE_BUF:
2798         case VIDIOC_QUERYBUF:
2799         case VIDIOC_QBUF:
2800         case VIDIOC_DQBUF: {
2801                 struct v4l2_buffer *buf = parg;
2802
2803                 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
2804                         if (buf->length > VIDEO_MAX_PLANES) {
2805                                 ret = -EINVAL;
2806                                 break;
2807                         }
2808                         *user_ptr = (void __user *)buf->m.planes;
2809                         *kernel_ptr = (void **)&buf->m.planes;
2810                         *array_size = sizeof(struct v4l2_plane) * buf->length;
2811                         ret = 1;
2812                 }
2813                 break;
2814         }
2815
2816         case VIDIOC_G_EDID:
2817         case VIDIOC_S_EDID: {
2818                 struct v4l2_edid *edid = parg;
2819
2820                 if (edid->blocks) {
2821                         if (edid->blocks > 256) {
2822                                 ret = -EINVAL;
2823                                 break;
2824                         }
2825                         *user_ptr = (void __user *)edid->edid;
2826                         *kernel_ptr = (void **)&edid->edid;
2827                         *array_size = edid->blocks * 128;
2828                         ret = 1;
2829                 }
2830                 break;
2831         }
2832
2833         case VIDIOC_S_EXT_CTRLS:
2834         case VIDIOC_G_EXT_CTRLS:
2835         case VIDIOC_TRY_EXT_CTRLS: {
2836                 struct v4l2_ext_controls *ctrls = parg;
2837
2838                 if (ctrls->count != 0) {
2839                         if (ctrls->count > V4L2_CID_MAX_CTRLS) {
2840                                 ret = -EINVAL;
2841                                 break;
2842                         }
2843                         *user_ptr = (void __user *)ctrls->controls;
2844                         *kernel_ptr = (void **)&ctrls->controls;
2845                         *array_size = sizeof(struct v4l2_ext_control)
2846                                     * ctrls->count;
2847                         ret = 1;
2848                 }
2849                 break;
2850         }
2851
2852         case VIDIOC_SUBDEV_G_ROUTING:
2853         case VIDIOC_SUBDEV_S_ROUTING: {
2854                 struct v4l2_subdev_routing *route = parg;
2855
2856                 if (route->num_routes > 0) {
2857                         if (route->num_routes > 256)
2858                                 return -EINVAL;
2859
2860                         *user_ptr = (void __user *)route->routes;
2861                         *kernel_ptr = (void *)&route->routes;
2862                         *array_size = sizeof(struct v4l2_plane)
2863                                     * route->num_routes;
2864                         ret = 1;
2865                 }
2866                 break;
2867         }
2868         }
2869
2870         return ret;
2871 }
2872
2873 long
2874 video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
2875                v4l2_kioctl func)
2876 {
2877         char    sbuf[128];
2878         void    *mbuf = NULL;
2879         void    *parg = (void *)arg;
2880         long    err  = -EINVAL;
2881         bool    has_array_args;
2882         bool    always_copy = false;
2883         size_t  array_size = 0;
2884         void __user *user_ptr = NULL;
2885         void    **kernel_ptr = NULL;
2886
2887         /*  Copy arguments into temp kernel buffer  */
2888         if (_IOC_DIR(cmd) != _IOC_NONE) {
2889                 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
2890                         parg = sbuf;
2891                 } else {
2892                         /* too big to allocate from stack */
2893                         mbuf = kvmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
2894                         if (NULL == mbuf)
2895                                 return -ENOMEM;
2896                         parg = mbuf;
2897                 }
2898
2899                 err = -EFAULT;
2900                 if (_IOC_DIR(cmd) & _IOC_WRITE) {
2901                         unsigned int n = _IOC_SIZE(cmd);
2902
2903                         /*
2904                          * In some cases, only a few fields are used as input,
2905                          * i.e. when the app sets "index" and then the driver
2906                          * fills in the rest of the structure for the thing
2907                          * with that index.  We only need to copy up the first
2908                          * non-input field.
2909                          */
2910                         if (v4l2_is_known_ioctl(cmd)) {
2911                                 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags;
2912
2913                                 if (flags & INFO_FL_CLEAR_MASK)
2914                                         n = (flags & INFO_FL_CLEAR_MASK) >> 16;
2915                                 always_copy = flags & INFO_FL_ALWAYS_COPY;
2916                         }
2917
2918                         if (copy_from_user(parg, (void __user *)arg, n))
2919                                 goto out;
2920
2921                         /* zero out anything we don't copy from userspace */
2922                         if (n < _IOC_SIZE(cmd))
2923                                 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n);
2924                 } else {
2925                         /* read-only ioctl */
2926                         memset(parg, 0, _IOC_SIZE(cmd));
2927                 }
2928         }
2929
2930         err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
2931         if (err < 0)
2932                 goto out;
2933         has_array_args = err;
2934
2935         if (has_array_args) {
2936                 /*
2937                  * When adding new types of array args, make sure that the
2938                  * parent argument to ioctl (which contains the pointer to the
2939                  * array) fits into sbuf (so that mbuf will still remain
2940                  * unused up to here).
2941                  */
2942                 mbuf = kvmalloc(array_size, GFP_KERNEL);
2943                 err = -ENOMEM;
2944                 if (NULL == mbuf)
2945                         goto out_array_args;
2946                 err = -EFAULT;
2947                 if (copy_from_user(mbuf, user_ptr, array_size))
2948                         goto out_array_args;
2949                 *kernel_ptr = mbuf;
2950         }
2951
2952         /* Handles IOCTL */
2953         err = func(file, cmd, parg);
2954         if (err == -ENOIOCTLCMD)
2955                 err = -ENOTTY;
2956         if (err == 0) {
2957                 if (cmd == VIDIOC_DQBUF)
2958                         trace_v4l2_dqbuf(video_devdata(file)->minor, parg);
2959                 else if (cmd == VIDIOC_QBUF)
2960                         trace_v4l2_qbuf(video_devdata(file)->minor, parg);
2961         }
2962
2963         if (has_array_args) {
2964                 *kernel_ptr = (void __force *)user_ptr;
2965                 if (copy_to_user(user_ptr, mbuf, array_size))
2966                         err = -EFAULT;
2967                 goto out_array_args;
2968         }
2969         /*
2970          * Some ioctls can return an error, but still have valid
2971          * results that must be returned.
2972          */
2973         if (err < 0 && !always_copy)
2974                 goto out;
2975
2976 out_array_args:
2977         /*  Copy results into user buffer  */
2978         switch (_IOC_DIR(cmd)) {
2979         case _IOC_READ:
2980         case (_IOC_WRITE | _IOC_READ):
2981                 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
2982                         err = -EFAULT;
2983                 break;
2984         }
2985
2986 out:
2987         kvfree(mbuf);
2988         return err;
2989 }
2990 EXPORT_SYMBOL(video_usercopy);
2991
2992 long video_ioctl2(struct file *file,
2993                unsigned int cmd, unsigned long arg)
2994 {
2995         return video_usercopy(file, cmd, arg, __video_do_ioctl);
2996 }
2997 EXPORT_SYMBOL(video_ioctl2);