drivers/media/platform/vivid/vivid-vid-common.c

   1 /*
   2  * vivid-vid-common.c - common video support functions.
   3  *
   4  * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
   5  *
   6  * This program is free software; you may redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  11  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  12  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  13  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  14  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  15  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  16  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  17  * SOFTWARE.
  18  */
  19
  20 #include <linux/errno.h>
  21 #include <linux/kernel.h>
  22 #include <linux/sched.h>
  23 #include <linux/videodev2.h>
  24 #include <linux/v4l2-dv-timings.h>
  25 #include <media/v4l2-common.h>
  26 #include <media/v4l2-event.h>
  27 #include <media/v4l2-dv-timings.h>
  28
  29 #include "vivid-core.h"
  30 #include "vivid-vid-common.h"
  31
  32 const struct v4l2_dv_timings_cap vivid_dv_timings_cap = {
  33         .type = V4L2_DV_BT_656_1120,
  34         /* keep this initialization for compatibility with GCC < 4.4.6 */
  35         .reserved = { 0 },
  36         V4L2_INIT_BT_TIMINGS(0, MAX_WIDTH, 0, MAX_HEIGHT, 14000000, 775000000,
  37                 V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
  38                 V4L2_DV_BT_STD_CVT | V4L2_DV_BT_STD_GTF,
  39                 V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_INTERLACED)
  40 };
  41
  42 /* ------------------------------------------------------------------
  43         Basic structures
  44    ------------------------------------------------------------------*/
  45
  46 struct vivid_fmt vivid_formats[] = {
  47         {
  48                 .fourcc   = V4L2_PIX_FMT_YUYV,
  49                 .vdownsampling = { 1 },
  50                 .bit_depth = { 16 },
  51                 .is_yuv   = true,
  52                 .planes   = 1,
  53                 .buffers = 1,
  54                 .data_offset = { PLANE0_DATA_OFFSET },
  55         },
  56         {
  57                 .fourcc   = V4L2_PIX_FMT_UYVY,
  58                 .vdownsampling = { 1 },
  59                 .bit_depth = { 16 },
  60                 .is_yuv   = true,
  61                 .planes   = 1,
  62                 .buffers = 1,
  63         },
  64         {
  65                 .fourcc   = V4L2_PIX_FMT_YVYU,
  66                 .vdownsampling = { 1 },
  67                 .bit_depth = { 16 },
  68                 .is_yuv   = true,
  69                 .planes   = 1,
  70                 .buffers = 1,
  71         },
  72         {
  73                 .fourcc   = V4L2_PIX_FMT_VYUY,
  74                 .vdownsampling = { 1 },
  75                 .bit_depth = { 16 },
  76                 .is_yuv   = true,
  77                 .planes   = 1,
  78                 .buffers = 1,
  79         },
  80         {
  81                 .fourcc   = V4L2_PIX_FMT_YUV422P,
  82                 .vdownsampling = { 1, 1, 1 },
  83                 .bit_depth = { 8, 4, 4 },
  84                 .is_yuv   = true,
  85                 .planes   = 3,
  86                 .buffers = 1,
  87         },
  88         {
  89                 .fourcc   = V4L2_PIX_FMT_YUV420,
  90                 .vdownsampling = { 1, 2, 2 },
  91                 .bit_depth = { 8, 4, 4 },
  92                 .is_yuv   = true,
  93                 .planes   = 3,
  94                 .buffers = 1,
  95         },
  96         {
  97                 .fourcc   = V4L2_PIX_FMT_YVU420,
  98                 .vdownsampling = { 1, 2, 2 },
  99                 .bit_depth = { 8, 4, 4 },
 100                 .is_yuv   = true,
 101                 .planes   = 3,
 102                 .buffers = 1,
 103         },
 104         {
 105                 .fourcc   = V4L2_PIX_FMT_NV12,
 106                 .vdownsampling = { 1, 2 },
 107                 .bit_depth = { 8, 8 },
 108                 .is_yuv   = true,
 109                 .planes   = 2,
 110                 .buffers = 1,
 111         },
 112         {
 113                 .fourcc   = V4L2_PIX_FMT_NV21,
 114                 .vdownsampling = { 1, 2 },
 115                 .bit_depth = { 8, 8 },
 116                 .is_yuv   = true,
 117                 .planes   = 2,
 118                 .buffers = 1,
 119         },
 120         {
 121                 .fourcc   = V4L2_PIX_FMT_NV16,
 122                 .vdownsampling = { 1, 1 },
 123                 .bit_depth = { 8, 8 },
 124                 .is_yuv   = true,
 125                 .planes   = 2,
 126                 .buffers = 1,
 127         },
 128         {
 129                 .fourcc   = V4L2_PIX_FMT_NV61,
 130                 .vdownsampling = { 1, 1 },
 131                 .bit_depth = { 8, 8 },
 132                 .is_yuv   = true,
 133                 .planes   = 2,
 134                 .buffers = 1,
 135         },
 136         {
 137                 .fourcc   = V4L2_PIX_FMT_NV24,
 138                 .vdownsampling = { 1, 1 },
 139                 .bit_depth = { 8, 16 },
 140                 .is_yuv   = true,
 141                 .planes   = 2,
 142                 .buffers = 1,
 143         },
 144         {
 145                 .fourcc   = V4L2_PIX_FMT_NV42,
 146                 .vdownsampling = { 1, 1 },
 147                 .bit_depth = { 8, 16 },
 148                 .is_yuv   = true,
 149                 .planes   = 2,
 150                 .buffers = 1,
 151         },
 152         {
 153                 .fourcc   = V4L2_PIX_FMT_YUV555, /* uuuvvvvv ayyyyyuu */
 154                 .vdownsampling = { 1 },
 155                 .bit_depth = { 16 },
 156                 .planes   = 1,
 157                 .buffers = 1,
 158                 .alpha_mask = 0x8000,
 159         },
 160         {
 161                 .fourcc   = V4L2_PIX_FMT_YUV565, /* uuuvvvvv yyyyyuuu */
 162                 .vdownsampling = { 1 },
 163                 .bit_depth = { 16 },
 164                 .planes   = 1,
 165                 .buffers = 1,
 166         },
 167         {
 168                 .fourcc   = V4L2_PIX_FMT_YUV444, /* uuuuvvvv aaaayyyy */
 169                 .vdownsampling = { 1 },
 170                 .bit_depth = { 16 },
 171                 .planes   = 1,
 172                 .buffers = 1,
 173                 .alpha_mask = 0xf000,
 174         },
 175         {
 176                 .fourcc   = V4L2_PIX_FMT_YUV32, /* ayuv */
 177                 .vdownsampling = { 1 },
 178                 .bit_depth = { 32 },
 179                 .planes   = 1,
 180                 .buffers = 1,
 181                 .alpha_mask = 0x000000ff,
 182         },
 183         {
 184                 .fourcc   = V4L2_PIX_FMT_GREY,
 185                 .vdownsampling = { 1 },
 186                 .bit_depth = { 8 },
 187                 .is_yuv   = true,
 188                 .planes   = 1,
 189                 .buffers = 1,
 190         },
 191         {
 192                 .fourcc   = V4L2_PIX_FMT_Y16,
 193                 .vdownsampling = { 1 },
 194                 .bit_depth = { 16 },
 195                 .is_yuv   = true,
 196                 .planes   = 1,
 197                 .buffers = 1,
 198         },
 199         {
 200                 .fourcc   = V4L2_PIX_FMT_Y16_BE,
 201                 .vdownsampling = { 1 },
 202                 .bit_depth = { 16 },
 203                 .is_yuv   = true,
 204                 .planes   = 1,
 205                 .buffers = 1,
 206         },
 207         {
 208                 .fourcc   = V4L2_PIX_FMT_RGB332, /* rrrgggbb */
 209                 .vdownsampling = { 1 },
 210                 .bit_depth = { 8 },
 211                 .planes   = 1,
 212                 .buffers = 1,
 213         },
 214         {
 215                 .fourcc   = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
 216                 .vdownsampling = { 1 },
 217                 .bit_depth = { 16 },
 218                 .planes   = 1,
 219                 .buffers = 1,
 220                 .can_do_overlay = true,
 221         },
 222         {
 223                 .fourcc   = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */
 224                 .vdownsampling = { 1 },
 225                 .bit_depth = { 16 },
 226                 .planes   = 1,
 227                 .buffers = 1,
 228                 .can_do_overlay = true,
 229         },
 230         {
 231                 .fourcc   = V4L2_PIX_FMT_RGB444, /* xxxxrrrr ggggbbbb */
 232                 .vdownsampling = { 1 },
 233                 .bit_depth = { 16 },
 234                 .planes   = 1,
 235                 .buffers = 1,
 236         },
 237         {
 238                 .fourcc   = V4L2_PIX_FMT_XRGB444, /* xxxxrrrr ggggbbbb */
 239                 .vdownsampling = { 1 },
 240                 .bit_depth = { 16 },
 241                 .planes   = 1,
 242                 .buffers = 1,
 243         },
 244         {
 245                 .fourcc   = V4L2_PIX_FMT_ARGB444, /* aaaarrrr ggggbbbb */
 246                 .vdownsampling = { 1 },
 247                 .bit_depth = { 16 },
 248                 .planes   = 1,
 249                 .buffers = 1,
 250                 .alpha_mask = 0x00f0,
 251         },
 252         {
 253                 .fourcc   = V4L2_PIX_FMT_RGB555, /* gggbbbbb xrrrrrgg */
 254                 .vdownsampling = { 1 },
 255                 .bit_depth = { 16 },
 256                 .planes   = 1,
 257                 .buffers = 1,
 258                 .can_do_overlay = true,
 259         },
 260         {
 261                 .fourcc   = V4L2_PIX_FMT_XRGB555, /* gggbbbbb xrrrrrgg */
 262                 .vdownsampling = { 1 },
 263                 .bit_depth = { 16 },
 264                 .planes   = 1,
 265                 .buffers = 1,
 266                 .can_do_overlay = true,
 267         },
 268         {
 269                 .fourcc   = V4L2_PIX_FMT_ARGB555, /* gggbbbbb arrrrrgg */
 270                 .vdownsampling = { 1 },
 271                 .bit_depth = { 16 },
 272                 .planes   = 1,
 273                 .buffers = 1,
 274                 .can_do_overlay = true,
 275                 .alpha_mask = 0x8000,
 276         },
 277         {
 278                 .fourcc   = V4L2_PIX_FMT_RGB555X, /* xrrrrrgg gggbbbbb */
 279                 .vdownsampling = { 1 },
 280                 .bit_depth = { 16 },
 281                 .planes   = 1,
 282                 .buffers = 1,
 283         },
 284         {
 285                 .fourcc   = V4L2_PIX_FMT_XRGB555X, /* xrrrrrgg gggbbbbb */
 286                 .vdownsampling = { 1 },
 287                 .bit_depth = { 16 },
 288                 .planes   = 1,
 289                 .buffers = 1,
 290         },
 291         {
 292                 .fourcc   = V4L2_PIX_FMT_ARGB555X, /* arrrrrgg gggbbbbb */
 293                 .vdownsampling = { 1 },
 294                 .bit_depth = { 16 },
 295                 .planes   = 1,
 296                 .buffers = 1,
 297                 .alpha_mask = 0x0080,
 298         },
 299         {
 300                 .fourcc   = V4L2_PIX_FMT_RGB24, /* rgb */
 301                 .vdownsampling = { 1 },
 302                 .bit_depth = { 24 },
 303                 .planes   = 1,
 304                 .buffers = 1,
 305         },
 306         {
 307                 .fourcc   = V4L2_PIX_FMT_BGR24, /* bgr */
 308                 .vdownsampling = { 1 },
 309                 .bit_depth = { 24 },
 310                 .planes   = 1,
 311                 .buffers = 1,
 312         },
 313         {
 314                 .fourcc   = V4L2_PIX_FMT_BGR666, /* bbbbbbgg ggggrrrr rrxxxxxx */
 315                 .vdownsampling = { 1 },
 316                 .bit_depth = { 32 },
 317                 .planes   = 1,
 318                 .buffers = 1,
 319         },
 320         {
 321                 .fourcc   = V4L2_PIX_FMT_RGB32, /* xrgb */
 322                 .vdownsampling = { 1 },
 323                 .bit_depth = { 32 },
 324                 .planes   = 1,
 325                 .buffers = 1,
 326         },
 327         {
 328                 .fourcc   = V4L2_PIX_FMT_BGR32, /* bgrx */
 329                 .vdownsampling = { 1 },
 330                 .bit_depth = { 32 },
 331                 .planes   = 1,
 332                 .buffers = 1,
 333         },
 334         {
 335                 .fourcc   = V4L2_PIX_FMT_XRGB32, /* xrgb */
 336                 .vdownsampling = { 1 },
 337                 .bit_depth = { 32 },
 338                 .planes   = 1,
 339                 .buffers = 1,
 340         },
 341         {
 342                 .fourcc   = V4L2_PIX_FMT_XBGR32, /* bgrx */
 343                 .vdownsampling = { 1 },
 344                 .bit_depth = { 32 },
 345                 .planes   = 1,
 346                 .buffers = 1,
 347         },
 348         {
 349                 .fourcc   = V4L2_PIX_FMT_ARGB32, /* argb */
 350                 .vdownsampling = { 1 },
 351                 .bit_depth = { 32 },
 352                 .planes   = 1,
 353                 .buffers = 1,
 354                 .alpha_mask = 0x000000ff,
 355         },
 356         {
 357                 .fourcc   = V4L2_PIX_FMT_ABGR32, /* bgra */
 358                 .vdownsampling = { 1 },
 359                 .bit_depth = { 32 },
 360                 .planes   = 1,
 361                 .buffers = 1,
 362                 .alpha_mask = 0xff000000,
 363         },
 364         {
 365                 .fourcc   = V4L2_PIX_FMT_SBGGR8, /* Bayer BG/GR */
 366                 .vdownsampling = { 1 },
 367                 .bit_depth = { 8 },
 368                 .planes   = 1,
 369                 .buffers = 1,
 370         },
 371         {
 372                 .fourcc   = V4L2_PIX_FMT_SGBRG8, /* Bayer GB/RG */
 373                 .vdownsampling = { 1 },
 374                 .bit_depth = { 8 },
 375                 .planes   = 1,
 376                 .buffers = 1,
 377         },
 378         {
 379                 .fourcc   = V4L2_PIX_FMT_SGRBG8, /* Bayer GR/BG */
 380                 .vdownsampling = { 1 },
 381                 .bit_depth = { 8 },
 382                 .planes   = 1,
 383                 .buffers = 1,
 384         },
 385         {
 386                 .fourcc   = V4L2_PIX_FMT_SRGGB8, /* Bayer RG/GB */
 387                 .vdownsampling = { 1 },
 388                 .bit_depth = { 8 },
 389                 .planes   = 1,
 390                 .buffers = 1,
 391         },
 392         {
 393                 .fourcc   = V4L2_PIX_FMT_NV16M,
 394                 .vdownsampling = { 1, 1 },
 395                 .bit_depth = { 8, 8 },
 396                 .is_yuv   = true,
 397                 .planes   = 2,
 398                 .buffers = 2,
 399                 .data_offset = { PLANE0_DATA_OFFSET, 0 },
 400         },
 401         {
 402                 .fourcc   = V4L2_PIX_FMT_NV61M,
 403                 .vdownsampling = { 1, 1 },
 404                 .bit_depth = { 8, 8 },
 405                 .is_yuv   = true,
 406                 .planes   = 2,
 407                 .buffers = 2,
 408                 .data_offset = { 0, PLANE0_DATA_OFFSET },
 409         },
 410         {
 411                 .fourcc   = V4L2_PIX_FMT_YUV420M,
 412                 .vdownsampling = { 1, 2, 2 },
 413                 .bit_depth = { 8, 4, 4 },
 414                 .is_yuv   = true,
 415                 .planes   = 3,
 416                 .buffers = 3,
 417         },
 418         {
 419                 .fourcc   = V4L2_PIX_FMT_YVU420M,
 420                 .vdownsampling = { 1, 2, 2 },
 421                 .bit_depth = { 8, 4, 4 },
 422                 .is_yuv   = true,
 423                 .planes   = 3,
 424                 .buffers = 3,
 425         },
 426         {
 427                 .fourcc   = V4L2_PIX_FMT_NV12M,
 428                 .vdownsampling = { 1, 2 },
 429                 .bit_depth = { 8, 8 },
 430                 .is_yuv   = true,
 431                 .planes   = 2,
 432                 .buffers = 2,
 433         },
 434         {
 435                 .fourcc   = V4L2_PIX_FMT_NV21M,
 436                 .vdownsampling = { 1, 2 },
 437                 .bit_depth = { 8, 8 },
 438                 .is_yuv   = true,
 439                 .planes   = 2,
 440                 .buffers = 2,
 441         },
 442 };
 443
 444 /* There are 6 multiplanar formats in the list */
 445 #define VIVID_MPLANAR_FORMATS 6
 446
 447 const struct vivid_fmt *vivid_get_format(struct vivid_dev *dev, u32 pixelformat)
 448 {
 449         const struct vivid_fmt *fmt;
 450         unsigned k;
 451
 452         for (k = 0; k < ARRAY_SIZE(vivid_formats); k++) {
 453                 fmt = &vivid_formats[k];
 454                 if (fmt->fourcc == pixelformat)
 455                         if (fmt->buffers == 1 || dev->multiplanar)
 456                                 return fmt;
 457         }
 458
 459         return NULL;
 460 }
 461
 462 bool vivid_vid_can_loop(struct vivid_dev *dev)
 463 {
 464         if (dev->src_rect.width != dev->sink_rect.width ||
 465             dev->src_rect.height != dev->sink_rect.height)
 466                 return false;
 467         if (dev->fmt_cap->fourcc != dev->fmt_out->fourcc)
 468                 return false;
 469         if (dev->field_cap != dev->field_out)
 470                 return false;
 471         /*
 472          * While this can be supported, it is just too much work
 473          * to actually implement.
 474          */
 475         if (dev->field_cap == V4L2_FIELD_SEQ_TB ||
 476             dev->field_cap == V4L2_FIELD_SEQ_BT)
 477                 return false;
 478         if (vivid_is_svid_cap(dev) && vivid_is_svid_out(dev)) {
 479                 if (!(dev->std_cap & V4L2_STD_525_60) !=
 480                     !(dev->std_out & V4L2_STD_525_60))
 481                         return false;
 482                 return true;
 483         }
 484         if (vivid_is_hdmi_cap(dev) && vivid_is_hdmi_out(dev))
 485                 return true;
 486         return false;
 487 }
 488
 489 void vivid_send_source_change(struct vivid_dev *dev, unsigned type)
 490 {
 491         struct v4l2_event ev = {
 492                 .type = V4L2_EVENT_SOURCE_CHANGE,
 493                 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
 494         };
 495         unsigned i;
 496
 497         for (i = 0; i < dev->num_inputs; i++) {
 498                 ev.id = i;
 499                 if (dev->input_type[i] == type) {
 500                         if (video_is_registered(&dev->vid_cap_dev) && dev->has_vid_cap)
 501                                 v4l2_event_queue(&dev->vid_cap_dev, &ev);
 502                         if (video_is_registered(&dev->vbi_cap_dev) && dev->has_vbi_cap)
 503                                 v4l2_event_queue(&dev->vbi_cap_dev, &ev);
 504                 }
 505         }
 506 }
 507
 508 /*
 509  * Conversion function that converts a single-planar format to a
 510  * single-plane multiplanar format.
 511  */
 512 void fmt_sp2mp(const struct v4l2_format *sp_fmt, struct v4l2_format *mp_fmt)
 513 {
 514         struct v4l2_pix_format_mplane *mp = &mp_fmt->fmt.pix_mp;
 515         struct v4l2_plane_pix_format *ppix = &mp->plane_fmt[0];
 516         const struct v4l2_pix_format *pix = &sp_fmt->fmt.pix;
 517         bool is_out = sp_fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT;
 518
 519         memset(mp->reserved, 0, sizeof(mp->reserved));
 520         mp_fmt->type = is_out ? V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE :
 521                            V4L2_CAP_VIDEO_CAPTURE_MPLANE;
 522         mp->width = pix->width;
 523         mp->height = pix->height;
 524         mp->pixelformat = pix->pixelformat;
 525         mp->field = pix->field;
 526         mp->colorspace = pix->colorspace;
 527         mp->ycbcr_enc = pix->ycbcr_enc;
 528         mp->quantization = pix->quantization;
 529         mp->num_planes = 1;
 530         mp->flags = pix->flags;
 531         ppix->sizeimage = pix->sizeimage;
 532         ppix->bytesperline = pix->bytesperline;
 533         memset(ppix->reserved, 0, sizeof(ppix->reserved));
 534 }
 535
 536 int fmt_sp2mp_func(struct file *file, void *priv,
 537                 struct v4l2_format *f, fmtfunc func)
 538 {
 539         struct v4l2_format fmt;
 540         struct v4l2_pix_format_mplane *mp = &fmt.fmt.pix_mp;
 541         struct v4l2_plane_pix_format *ppix = &mp->plane_fmt[0];
 542         struct v4l2_pix_format *pix = &f->fmt.pix;
 543         int ret;
 544
 545         /* Converts to a mplane format */
 546         fmt_sp2mp(f, &fmt);
 547         /* Passes it to the generic mplane format function */
 548         ret = func(file, priv, &fmt);
 549         /* Copies back the mplane data to the single plane format */
 550         pix->width = mp->width;
 551         pix->height = mp->height;
 552         pix->pixelformat = mp->pixelformat;
 553         pix->field = mp->field;
 554         pix->colorspace = mp->colorspace;
 555         pix->ycbcr_enc = mp->ycbcr_enc;
 556         pix->quantization = mp->quantization;
 557         pix->sizeimage = ppix->sizeimage;
 558         pix->bytesperline = ppix->bytesperline;
 559         pix->flags = mp->flags;
 560         return ret;
 561 }
 562
 563 /* v4l2_rect helper function: copy the width/height values */
 564 void rect_set_size_to(struct v4l2_rect *r, const struct v4l2_rect *size)
 565 {
 566         r->width = size->width;
 567         r->height = size->height;
 568 }
 569
 570 /* v4l2_rect helper function: width and height of r should be >= min_size */
 571 void rect_set_min_size(struct v4l2_rect *r, const struct v4l2_rect *min_size)
 572 {
 573         if (r->width < min_size->width)
 574                 r->width = min_size->width;
 575         if (r->height < min_size->height)
 576                 r->height = min_size->height;
 577 }
 578
 579 /* v4l2_rect helper function: width and height of r should be <= max_size */
 580 void rect_set_max_size(struct v4l2_rect *r, const struct v4l2_rect *max_size)
 581 {
 582         if (r->width > max_size->width)
 583                 r->width = max_size->width;
 584         if (r->height > max_size->height)
 585                 r->height = max_size->height;
 586 }
 587
 588 /* v4l2_rect helper function: r should be inside boundary */
 589 void rect_map_inside(struct v4l2_rect *r, const struct v4l2_rect *boundary)
 590 {
 591         rect_set_max_size(r, boundary);
 592         if (r->left < boundary->left)
 593                 r->left = boundary->left;
 594         if (r->top < boundary->top)
 595                 r->top = boundary->top;
 596         if (r->left + r->width > boundary->width)
 597                 r->left = boundary->width - r->width;
 598         if (r->top + r->height > boundary->height)
 599                 r->top = boundary->height - r->height;
 600 }
 601
 602 /* v4l2_rect helper function: return true if r1 has the same size as r2 */
 603 bool rect_same_size(const struct v4l2_rect *r1, const struct v4l2_rect *r2)
 604 {
 605         return r1->width == r2->width && r1->height == r2->height;
 606 }
 607
 608 /* v4l2_rect helper function: calculate the intersection of two rects */
 609 struct v4l2_rect rect_intersect(const struct v4l2_rect *a, const struct v4l2_rect *b)
 610 {
 611         struct v4l2_rect r;
 612         int right, bottom;
 613
 614         r.top = max(a->top, b->top);
 615         r.left = max(a->left, b->left);
 616         bottom = min(a->top + a->height, b->top + b->height);
 617         right = min(a->left + a->width, b->left + b->width);
 618         r.height = max(0, bottom - r.top);
 619         r.width = max(0, right - r.left);
 620         return r;
 621 }
 622
 623 /*
 624  * v4l2_rect helper function: scale rect r by to->width / from->width and
 625  * to->height / from->height.
 626  */
 627 void rect_scale(struct v4l2_rect *r, const struct v4l2_rect *from,
 628                                      const struct v4l2_rect *to)
 629 {
 630         if (from->width == 0 || from->height == 0) {
 631                 r->left = r->top = r->width = r->height = 0;
 632                 return;
 633         }
 634         r->left = (((r->left - from->left) * to->width) / from->width) & ~1;
 635         r->width = ((r->width * to->width) / from->width) & ~1;
 636         r->top = ((r->top - from->top) * to->height) / from->height;
 637         r->height = (r->height * to->height) / from->height;
 638 }
 639
 640 bool rect_overlap(const struct v4l2_rect *r1, const struct v4l2_rect *r2)
 641 {
 642         /*
 643          * IF the left side of r1 is to the right of the right side of r2 OR
 644          *    the left side of r2 is to the right of the right side of r1 THEN
 645          * they do not overlap.
 646          */
 647         if (r1->left >= r2->left + r2->width ||
 648             r2->left >= r1->left + r1->width)
 649                 return false;
 650         /*
 651          * IF the top side of r1 is below the bottom of r2 OR
 652          *    the top side of r2 is below the bottom of r1 THEN
 653          * they do not overlap.
 654          */
 655         if (r1->top >= r2->top + r2->height ||
 656             r2->top >= r1->top + r1->height)
 657                 return false;
 658         return true;
 659 }
 660 int vivid_vid_adjust_sel(unsigned flags, struct v4l2_rect *r)
 661 {
 662         unsigned w = r->width;
 663         unsigned h = r->height;
 664
 665         /* sanitize w and h in case someone passes ~0 as the value */
 666         w &= 0xffff;
 667         h &= 0xffff;
 668         if (!(flags & V4L2_SEL_FLAG_LE)) {
 669                 w++;
 670                 h++;
 671                 if (w < 2)
 672                         w = 2;
 673                 if (h < 2)
 674                         h = 2;
 675         }
 676         if (!(flags & V4L2_SEL_FLAG_GE)) {
 677                 if (w > MAX_WIDTH)
 678                         w = MAX_WIDTH;
 679                 if (h > MAX_HEIGHT)
 680                         h = MAX_HEIGHT;
 681         }
 682         w = w & ~1;
 683         h = h & ~1;
 684         if (w < 2 || h < 2)
 685                 return -ERANGE;
 686         if (w > MAX_WIDTH || h > MAX_HEIGHT)
 687                 return -ERANGE;
 688         if (r->top < 0)
 689                 r->top = 0;
 690         if (r->left < 0)
 691                 r->left = 0;
 692         /* sanitize left and top in case someone passes ~0 as the value */
 693         r->left &= 0xfffe;
 694         r->top &= 0xfffe;
 695         if (r->left + w > MAX_WIDTH)
 696                 r->left = MAX_WIDTH - w;
 697         if (r->top + h > MAX_HEIGHT)
 698                 r->top = MAX_HEIGHT - h;
 699         if ((flags & (V4L2_SEL_FLAG_GE | V4L2_SEL_FLAG_LE)) ==
 700                         (V4L2_SEL_FLAG_GE | V4L2_SEL_FLAG_LE) &&
 701             (r->width != w || r->height != h))
 702                 return -ERANGE;
 703         r->width = w;
 704         r->height = h;
 705         return 0;
 706 }
 707
 708 int vivid_enum_fmt_vid(struct file *file, void  *priv,
 709                                         struct v4l2_fmtdesc *f)
 710 {
 711         struct vivid_dev *dev = video_drvdata(file);
 712         const struct vivid_fmt *fmt;
 713
 714         if (f->index >= ARRAY_SIZE(vivid_formats) -
 715             (dev->multiplanar ? 0 : VIVID_MPLANAR_FORMATS))
 716                 return -EINVAL;
 717
 718         fmt = &vivid_formats[f->index];
 719
 720         f->pixelformat = fmt->fourcc;
 721         return 0;
 722 }
 723
 724 int vidioc_enum_fmt_vid_mplane(struct file *file, void  *priv,
 725                                         struct v4l2_fmtdesc *f)
 726 {
 727         struct vivid_dev *dev = video_drvdata(file);
 728
 729         if (!dev->multiplanar)
 730                 return -ENOTTY;
 731         return vivid_enum_fmt_vid(file, priv, f);
 732 }
 733
 734 int vidioc_enum_fmt_vid(struct file *file, void  *priv,
 735                                         struct v4l2_fmtdesc *f)
 736 {
 737         struct vivid_dev *dev = video_drvdata(file);
 738
 739         if (dev->multiplanar)
 740                 return -ENOTTY;
 741         return vivid_enum_fmt_vid(file, priv, f);
 742 }
 743
 744 int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
 745 {
 746         struct vivid_dev *dev = video_drvdata(file);
 747         struct video_device *vdev = video_devdata(file);
 748
 749         if (vdev->vfl_dir == VFL_DIR_RX) {
 750                 if (!vivid_is_sdtv_cap(dev))
 751                         return -ENODATA;
 752                 *id = dev->std_cap;
 753         } else {
 754                 if (!vivid_is_svid_out(dev))
 755                         return -ENODATA;
 756                 *id = dev->std_out;
 757         }
 758         return 0;
 759 }
 760
 761 int vidioc_g_dv_timings(struct file *file, void *_fh,
 762                                     struct v4l2_dv_timings *timings)
 763 {
 764         struct vivid_dev *dev = video_drvdata(file);
 765         struct video_device *vdev = video_devdata(file);
 766
 767         if (vdev->vfl_dir == VFL_DIR_RX) {
 768                 if (!vivid_is_hdmi_cap(dev))
 769                         return -ENODATA;
 770                 *timings = dev->dv_timings_cap;
 771         } else {
 772                 if (!vivid_is_hdmi_out(dev))
 773                         return -ENODATA;
 774                 *timings = dev->dv_timings_out;
 775         }
 776         return 0;
 777 }
 778
 779 int vidioc_enum_dv_timings(struct file *file, void *_fh,
 780                                     struct v4l2_enum_dv_timings *timings)
 781 {
 782         struct vivid_dev *dev = video_drvdata(file);
 783         struct video_device *vdev = video_devdata(file);
 784
 785         if (vdev->vfl_dir == VFL_DIR_RX) {
 786                 if (!vivid_is_hdmi_cap(dev))
 787                         return -ENODATA;
 788         } else {
 789                 if (!vivid_is_hdmi_out(dev))
 790                         return -ENODATA;
 791         }
 792         return v4l2_enum_dv_timings_cap(timings, &vivid_dv_timings_cap,
 793                         NULL, NULL);
 794 }
 795
 796 int vidioc_dv_timings_cap(struct file *file, void *_fh,
 797                                     struct v4l2_dv_timings_cap *cap)
 798 {
 799         struct vivid_dev *dev = video_drvdata(file);
 800         struct video_device *vdev = video_devdata(file);
 801
 802         if (vdev->vfl_dir == VFL_DIR_RX) {
 803                 if (!vivid_is_hdmi_cap(dev))
 804                         return -ENODATA;
 805         } else {
 806                 if (!vivid_is_hdmi_out(dev))
 807                         return -ENODATA;
 808         }
 809         *cap = vivid_dv_timings_cap;
 810         return 0;
 811 }
 812
 813 int vidioc_g_edid(struct file *file, void *_fh,
 814                          struct v4l2_edid *edid)
 815 {
 816         struct vivid_dev *dev = video_drvdata(file);
 817         struct video_device *vdev = video_devdata(file);
 818
 819         memset(edid->reserved, 0, sizeof(edid->reserved));
 820         if (vdev->vfl_dir == VFL_DIR_RX) {
 821                 if (edid->pad >= dev->num_inputs)
 822                         return -EINVAL;
 823                 if (dev->input_type[edid->pad] != HDMI)
 824                         return -EINVAL;
 825         } else {
 826                 if (edid->pad >= dev->num_outputs)
 827                         return -EINVAL;
 828                 if (dev->output_type[edid->pad] != HDMI)
 829                         return -EINVAL;
 830         }
 831         if (edid->start_block == 0 && edid->blocks == 0) {
 832                 edid->blocks = dev->edid_blocks;
 833                 return 0;
 834         }
 835         if (dev->edid_blocks == 0)
 836                 return -ENODATA;
 837         if (edid->start_block >= dev->edid_blocks)
 838                 return -EINVAL;
 839         if (edid->start_block + edid->blocks > dev->edid_blocks)
 840                 edid->blocks = dev->edid_blocks - edid->start_block;
 841         memcpy(edid->edid, dev->edid, edid->blocks * 128);
 842         return 0;
 843 }