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, 25000000, 600000000,
  37                 V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT,
  38                 V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_INTERLACED)
  39 };
  40
  41 /* ------------------------------------------------------------------
  42         Basic structures
  43    ------------------------------------------------------------------*/
  44
  45 struct vivid_fmt vivid_formats[] = {
  46         {
  47                 .name     = "4:2:2, packed, YUYV",
  48                 .fourcc   = V4L2_PIX_FMT_YUYV,
  49                 .depth    = 16,
  50                 .is_yuv   = true,
  51                 .planes   = 1,
  52                 .data_offset = { PLANE0_DATA_OFFSET, 0 },
  53         },
  54         {
  55                 .name     = "4:2:2, packed, UYVY",
  56                 .fourcc   = V4L2_PIX_FMT_UYVY,
  57                 .depth    = 16,
  58                 .is_yuv   = true,
  59                 .planes   = 1,
  60         },
  61         {
  62                 .name     = "4:2:2, packed, YVYU",
  63                 .fourcc   = V4L2_PIX_FMT_YVYU,
  64                 .depth    = 16,
  65                 .is_yuv   = true,
  66                 .planes   = 1,
  67         },
  68         {
  69                 .name     = "4:2:2, packed, VYUY",
  70                 .fourcc   = V4L2_PIX_FMT_VYUY,
  71                 .depth    = 16,
  72                 .is_yuv   = true,
  73                 .planes   = 1,
  74         },
  75         {
  76                 .name     = "RGB565 (LE)",
  77                 .fourcc   = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
  78                 .depth    = 16,
  79                 .planes   = 1,
  80                 .can_do_overlay = true,
  81         },
  82         {
  83                 .name     = "RGB565 (BE)",
  84                 .fourcc   = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */
  85                 .depth    = 16,
  86                 .planes   = 1,
  87                 .can_do_overlay = true,
  88         },
  89         {
  90                 .name     = "RGB555 (LE)",
  91                 .fourcc   = V4L2_PIX_FMT_RGB555, /* gggbbbbb arrrrrgg */
  92                 .depth    = 16,
  93                 .planes   = 1,
  94                 .can_do_overlay = true,
  95         },
  96         {
  97                 .name     = "XRGB555 (LE)",
  98                 .fourcc   = V4L2_PIX_FMT_XRGB555, /* gggbbbbb arrrrrgg */
  99                 .depth    = 16,
 100                 .planes   = 1,
 101                 .can_do_overlay = true,
 102         },
 103         {
 104                 .name     = "ARGB555 (LE)",
 105                 .fourcc   = V4L2_PIX_FMT_ARGB555, /* gggbbbbb arrrrrgg */
 106                 .depth    = 16,
 107                 .planes   = 1,
 108                 .can_do_overlay = true,
 109                 .alpha_mask = 0x8000,
 110         },
 111         {
 112                 .name     = "RGB555 (BE)",
 113                 .fourcc   = V4L2_PIX_FMT_RGB555X, /* arrrrrgg gggbbbbb */
 114                 .depth    = 16,
 115                 .planes   = 1,
 116                 .can_do_overlay = true,
 117         },
 118         {
 119                 .name     = "RGB24 (LE)",
 120                 .fourcc   = V4L2_PIX_FMT_RGB24, /* rgb */
 121                 .depth    = 24,
 122                 .planes   = 1,
 123         },
 124         {
 125                 .name     = "RGB24 (BE)",
 126                 .fourcc   = V4L2_PIX_FMT_BGR24, /* bgr */
 127                 .depth    = 24,
 128                 .planes   = 1,
 129         },
 130         {
 131                 .name     = "RGB32 (LE)",
 132                 .fourcc   = V4L2_PIX_FMT_RGB32, /* argb */
 133                 .depth    = 32,
 134                 .planes   = 1,
 135         },
 136         {
 137                 .name     = "RGB32 (BE)",
 138                 .fourcc   = V4L2_PIX_FMT_BGR32, /* bgra */
 139                 .depth    = 32,
 140                 .planes   = 1,
 141         },
 142         {
 143                 .name     = "XRGB32 (LE)",
 144                 .fourcc   = V4L2_PIX_FMT_XRGB32, /* argb */
 145                 .depth    = 32,
 146                 .planes   = 1,
 147         },
 148         {
 149                 .name     = "XRGB32 (BE)",
 150                 .fourcc   = V4L2_PIX_FMT_XBGR32, /* bgra */
 151                 .depth    = 32,
 152                 .planes   = 1,
 153         },
 154         {
 155                 .name     = "ARGB32 (LE)",
 156                 .fourcc   = V4L2_PIX_FMT_ARGB32, /* argb */
 157                 .depth    = 32,
 158                 .planes   = 1,
 159                 .alpha_mask = 0x000000ff,
 160         },
 161         {
 162                 .name     = "ARGB32 (BE)",
 163                 .fourcc   = V4L2_PIX_FMT_ABGR32, /* bgra */
 164                 .depth    = 32,
 165                 .planes   = 1,
 166                 .alpha_mask = 0xff000000,
 167         },
 168         {
 169                 .name     = "4:2:2, planar, YUV",
 170                 .fourcc   = V4L2_PIX_FMT_NV16M,
 171                 .depth    = 8,
 172                 .is_yuv   = true,
 173                 .planes   = 2,
 174                 .data_offset = { PLANE0_DATA_OFFSET, 0 },
 175         },
 176         {
 177                 .name     = "4:2:2, planar, YVU",
 178                 .fourcc   = V4L2_PIX_FMT_NV61M,
 179                 .depth    = 8,
 180                 .is_yuv   = true,
 181                 .planes   = 2,
 182                 .data_offset = { 0, PLANE0_DATA_OFFSET },
 183         },
 184 };
 185
 186 /* There are 2 multiplanar formats in the list */
 187 #define VIVID_MPLANAR_FORMATS 2
 188
 189 const struct vivid_fmt *vivid_get_format(struct vivid_dev *dev, u32 pixelformat)
 190 {
 191         const struct vivid_fmt *fmt;
 192         unsigned k;
 193
 194         for (k = 0; k < ARRAY_SIZE(vivid_formats); k++) {
 195                 fmt = &vivid_formats[k];
 196                 if (fmt->fourcc == pixelformat)
 197                         if (fmt->planes == 1 || dev->multiplanar)
 198                                 return fmt;
 199         }
 200
 201         return NULL;
 202 }
 203
 204 bool vivid_vid_can_loop(struct vivid_dev *dev)
 205 {
 206         if (dev->src_rect.width != dev->sink_rect.width ||
 207             dev->src_rect.height != dev->sink_rect.height)
 208                 return false;
 209         if (dev->fmt_cap->fourcc != dev->fmt_out->fourcc)
 210                 return false;
 211         if (dev->field_cap != dev->field_out)
 212                 return false;
 213         if (vivid_is_svid_cap(dev) && vivid_is_svid_out(dev)) {
 214                 if (!(dev->std_cap & V4L2_STD_525_60) !=
 215                     !(dev->std_out & V4L2_STD_525_60))
 216                         return false;
 217                 return true;
 218         }
 219         if (vivid_is_hdmi_cap(dev) && vivid_is_hdmi_out(dev))
 220                 return true;
 221         return false;
 222 }
 223
 224 void vivid_send_source_change(struct vivid_dev *dev, unsigned type)
 225 {
 226         struct v4l2_event ev = {
 227                 .type = V4L2_EVENT_SOURCE_CHANGE,
 228                 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
 229         };
 230         unsigned i;
 231
 232         for (i = 0; i < dev->num_inputs; i++) {
 233                 ev.id = i;
 234                 if (dev->input_type[i] == type) {
 235                         if (video_is_registered(&dev->vid_cap_dev) && dev->has_vid_cap)
 236                                 v4l2_event_queue(&dev->vid_cap_dev, &ev);
 237                         if (video_is_registered(&dev->vbi_cap_dev) && dev->has_vbi_cap)
 238                                 v4l2_event_queue(&dev->vbi_cap_dev, &ev);
 239                 }
 240         }
 241 }
 242
 243 /*
 244  * Conversion function that converts a single-planar format to a
 245  * single-plane multiplanar format.
 246  */
 247 void fmt_sp2mp(const struct v4l2_format *sp_fmt, struct v4l2_format *mp_fmt)
 248 {
 249         struct v4l2_pix_format_mplane *mp = &mp_fmt->fmt.pix_mp;
 250         struct v4l2_plane_pix_format *ppix = &mp->plane_fmt[0];
 251         const struct v4l2_pix_format *pix = &sp_fmt->fmt.pix;
 252         bool is_out = sp_fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT;
 253
 254         memset(mp->reserved, 0, sizeof(mp->reserved));
 255         mp_fmt->type = is_out ? V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE :
 256                            V4L2_CAP_VIDEO_CAPTURE_MPLANE;
 257         mp->width = pix->width;
 258         mp->height = pix->height;
 259         mp->pixelformat = pix->pixelformat;
 260         mp->field = pix->field;
 261         mp->colorspace = pix->colorspace;
 262         mp->num_planes = 1;
 263         mp->flags = pix->flags;
 264         ppix->sizeimage = pix->sizeimage;
 265         ppix->bytesperline = pix->bytesperline;
 266         memset(ppix->reserved, 0, sizeof(ppix->reserved));
 267 }
 268
 269 int fmt_sp2mp_func(struct file *file, void *priv,
 270                 struct v4l2_format *f, fmtfunc func)
 271 {
 272         struct v4l2_format fmt;
 273         struct v4l2_pix_format_mplane *mp = &fmt.fmt.pix_mp;
 274         struct v4l2_plane_pix_format *ppix = &mp->plane_fmt[0];
 275         struct v4l2_pix_format *pix = &f->fmt.pix;
 276         int ret;
 277
 278         /* Converts to a mplane format */
 279         fmt_sp2mp(f, &fmt);
 280         /* Passes it to the generic mplane format function */
 281         ret = func(file, priv, &fmt);
 282         /* Copies back the mplane data to the single plane format */
 283         pix->width = mp->width;
 284         pix->height = mp->height;
 285         pix->pixelformat = mp->pixelformat;
 286         pix->field = mp->field;
 287         pix->colorspace = mp->colorspace;
 288         pix->sizeimage = ppix->sizeimage;
 289         pix->bytesperline = ppix->bytesperline;
 290         pix->flags = mp->flags;
 291         return ret;
 292 }
 293
 294 /* v4l2_rect helper function: copy the width/height values */
 295 void rect_set_size_to(struct v4l2_rect *r, const struct v4l2_rect *size)
 296 {
 297         r->width = size->width;
 298         r->height = size->height;
 299 }
 300
 301 /* v4l2_rect helper function: width and height of r should be >= min_size */
 302 void rect_set_min_size(struct v4l2_rect *r, const struct v4l2_rect *min_size)
 303 {
 304         if (r->width < min_size->width)
 305                 r->width = min_size->width;
 306         if (r->height < min_size->height)
 307                 r->height = min_size->height;
 308 }
 309
 310 /* v4l2_rect helper function: width and height of r should be <= max_size */
 311 void rect_set_max_size(struct v4l2_rect *r, const struct v4l2_rect *max_size)
 312 {
 313         if (r->width > max_size->width)
 314                 r->width = max_size->width;
 315         if (r->height > max_size->height)
 316                 r->height = max_size->height;
 317 }
 318
 319 /* v4l2_rect helper function: r should be inside boundary */
 320 void rect_map_inside(struct v4l2_rect *r, const struct v4l2_rect *boundary)
 321 {
 322         rect_set_max_size(r, boundary);
 323         if (r->left < boundary->left)
 324                 r->left = boundary->left;
 325         if (r->top < boundary->top)
 326                 r->top = boundary->top;
 327         if (r->left + r->width > boundary->width)
 328                 r->left = boundary->width - r->width;
 329         if (r->top + r->height > boundary->height)
 330                 r->top = boundary->height - r->height;
 331 }
 332
 333 /* v4l2_rect helper function: return true if r1 has the same size as r2 */
 334 bool rect_same_size(const struct v4l2_rect *r1, const struct v4l2_rect *r2)
 335 {
 336         return r1->width == r2->width && r1->height == r2->height;
 337 }
 338
 339 /* v4l2_rect helper function: calculate the intersection of two rects */
 340 struct v4l2_rect rect_intersect(const struct v4l2_rect *a, const struct v4l2_rect *b)
 341 {
 342         struct v4l2_rect r;
 343         int right, bottom;
 344
 345         r.top = max(a->top, b->top);
 346         r.left = max(a->left, b->left);
 347         bottom = min(a->top + a->height, b->top + b->height);
 348         right = min(a->left + a->width, b->left + b->width);
 349         r.height = max(0, bottom - r.top);
 350         r.width = max(0, right - r.left);
 351         return r;
 352 }
 353
 354 /*
 355  * v4l2_rect helper function: scale rect r by to->width / from->width and
 356  * to->height / from->height.
 357  */
 358 void rect_scale(struct v4l2_rect *r, const struct v4l2_rect *from,
 359                                      const struct v4l2_rect *to)
 360 {
 361         if (from->width == 0 || from->height == 0) {
 362                 r->left = r->top = r->width = r->height = 0;
 363                 return;
 364         }
 365         r->left = (((r->left - from->left) * to->width) / from->width) & ~1;
 366         r->width = ((r->width * to->width) / from->width) & ~1;
 367         r->top = ((r->top - from->top) * to->height) / from->height;
 368         r->height = (r->height * to->height) / from->height;
 369 }
 370
 371 bool rect_overlap(const struct v4l2_rect *r1, const struct v4l2_rect *r2)
 372 {
 373         /*
 374          * IF the left side of r1 is to the right of the right side of r2 OR
 375          *    the left side of r2 is to the right of the right side of r1 THEN
 376          * they do not overlap.
 377          */
 378         if (r1->left >= r2->left + r2->width ||
 379             r2->left >= r1->left + r1->width)
 380                 return false;
 381         /*
 382          * IF the top side of r1 is below the bottom of r2 OR
 383          *    the top side of r2 is below the bottom of r1 THEN
 384          * they do not overlap.
 385          */
 386         if (r1->top >= r2->top + r2->height ||
 387             r2->top >= r1->top + r1->height)
 388                 return false;
 389         return true;
 390 }
 391 int vivid_vid_adjust_sel(unsigned flags, struct v4l2_rect *r)
 392 {
 393         unsigned w = r->width;
 394         unsigned h = r->height;
 395
 396         if (!(flags & V4L2_SEL_FLAG_LE)) {
 397                 w++;
 398                 h++;
 399                 if (w < 2)
 400                         w = 2;
 401                 if (h < 2)
 402                         h = 2;
 403         }
 404         if (!(flags & V4L2_SEL_FLAG_GE)) {
 405                 if (w > MAX_WIDTH)
 406                         w = MAX_WIDTH;
 407                 if (h > MAX_HEIGHT)
 408                         h = MAX_HEIGHT;
 409         }
 410         w = w & ~1;
 411         h = h & ~1;
 412         if (w < 2 || h < 2)
 413                 return -ERANGE;
 414         if (w > MAX_WIDTH || h > MAX_HEIGHT)
 415                 return -ERANGE;
 416         if (r->top < 0)
 417                 r->top = 0;
 418         if (r->left < 0)
 419                 r->left = 0;
 420         r->left &= ~1;
 421         r->top &= ~1;
 422         if (r->left + w > MAX_WIDTH)
 423                 r->left = MAX_WIDTH - w;
 424         if (r->top + h > MAX_HEIGHT)
 425                 r->top = MAX_HEIGHT - h;
 426         if ((flags & (V4L2_SEL_FLAG_GE | V4L2_SEL_FLAG_LE)) ==
 427                         (V4L2_SEL_FLAG_GE | V4L2_SEL_FLAG_LE) &&
 428             (r->width != w || r->height != h))
 429                 return -ERANGE;
 430         r->width = w;
 431         r->height = h;
 432         return 0;
 433 }
 434
 435 int vivid_enum_fmt_vid(struct file *file, void  *priv,
 436                                         struct v4l2_fmtdesc *f)
 437 {
 438         struct vivid_dev *dev = video_drvdata(file);
 439         const struct vivid_fmt *fmt;
 440
 441         if (f->index >= ARRAY_SIZE(vivid_formats) -
 442             (dev->multiplanar ? 0 : VIVID_MPLANAR_FORMATS))
 443                 return -EINVAL;
 444
 445         fmt = &vivid_formats[f->index];
 446
 447         strlcpy(f->description, fmt->name, sizeof(f->description));
 448         f->pixelformat = fmt->fourcc;
 449         return 0;
 450 }
 451
 452 int vidioc_enum_fmt_vid_mplane(struct file *file, void  *priv,
 453                                         struct v4l2_fmtdesc *f)
 454 {
 455         struct vivid_dev *dev = video_drvdata(file);
 456
 457         if (!dev->multiplanar)
 458                 return -ENOTTY;
 459         return vivid_enum_fmt_vid(file, priv, f);
 460 }
 461
 462 int vidioc_enum_fmt_vid(struct file *file, void  *priv,
 463                                         struct v4l2_fmtdesc *f)
 464 {
 465         struct vivid_dev *dev = video_drvdata(file);
 466
 467         if (dev->multiplanar)
 468                 return -ENOTTY;
 469         return vivid_enum_fmt_vid(file, priv, f);
 470 }
 471
 472 int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
 473 {
 474         struct vivid_dev *dev = video_drvdata(file);
 475         struct video_device *vdev = video_devdata(file);
 476
 477         if (vdev->vfl_dir == VFL_DIR_RX) {
 478                 if (!vivid_is_sdtv_cap(dev))
 479                         return -ENODATA;
 480                 *id = dev->std_cap;
 481         } else {
 482                 if (!vivid_is_svid_out(dev))
 483                         return -ENODATA;
 484                 *id = dev->std_out;
 485         }
 486         return 0;
 487 }
 488
 489 int vidioc_g_dv_timings(struct file *file, void *_fh,
 490                                     struct v4l2_dv_timings *timings)
 491 {
 492         struct vivid_dev *dev = video_drvdata(file);
 493         struct video_device *vdev = video_devdata(file);
 494
 495         if (vdev->vfl_dir == VFL_DIR_RX) {
 496                 if (!vivid_is_hdmi_cap(dev))
 497                         return -ENODATA;
 498                 *timings = dev->dv_timings_cap;
 499         } else {
 500                 if (!vivid_is_hdmi_out(dev))
 501                         return -ENODATA;
 502                 *timings = dev->dv_timings_out;
 503         }
 504         return 0;
 505 }
 506
 507 int vidioc_enum_dv_timings(struct file *file, void *_fh,
 508                                     struct v4l2_enum_dv_timings *timings)
 509 {
 510         struct vivid_dev *dev = video_drvdata(file);
 511         struct video_device *vdev = video_devdata(file);
 512
 513         if (vdev->vfl_dir == VFL_DIR_RX) {
 514                 if (!vivid_is_hdmi_cap(dev))
 515                         return -ENODATA;
 516         } else {
 517                 if (!vivid_is_hdmi_out(dev))
 518                         return -ENODATA;
 519         }
 520         return v4l2_enum_dv_timings_cap(timings, &vivid_dv_timings_cap,
 521                         NULL, NULL);
 522 }
 523
 524 int vidioc_dv_timings_cap(struct file *file, void *_fh,
 525                                     struct v4l2_dv_timings_cap *cap)
 526 {
 527         struct vivid_dev *dev = video_drvdata(file);
 528         struct video_device *vdev = video_devdata(file);
 529
 530         if (vdev->vfl_dir == VFL_DIR_RX) {
 531                 if (!vivid_is_hdmi_cap(dev))
 532                         return -ENODATA;
 533         } else {
 534                 if (!vivid_is_hdmi_out(dev))
 535                         return -ENODATA;
 536         }
 537         *cap = vivid_dv_timings_cap;
 538         return 0;
 539 }
 540
 541 int vidioc_g_edid(struct file *file, void *_fh,
 542                          struct v4l2_edid *edid)
 543 {
 544         struct vivid_dev *dev = video_drvdata(file);
 545         struct video_device *vdev = video_devdata(file);
 546
 547         memset(edid->reserved, 0, sizeof(edid->reserved));
 548         if (vdev->vfl_dir == VFL_DIR_RX) {
 549                 if (edid->pad >= dev->num_inputs)
 550                         return -EINVAL;
 551                 if (dev->input_type[edid->pad] != HDMI)
 552                         return -EINVAL;
 553         } else {
 554                 if (edid->pad >= dev->num_outputs)
 555                         return -EINVAL;
 556                 if (dev->output_type[edid->pad] != HDMI)
 557                         return -EINVAL;
 558         }
 559         if (edid->start_block == 0 && edid->blocks == 0) {
 560                 edid->blocks = dev->edid_blocks;
 561                 return 0;
 562         }
 563         if (dev->edid_blocks == 0)
 564                 return -ENODATA;
 565         if (edid->start_block >= dev->edid_blocks)
 566                 return -EINVAL;
 567         if (edid->start_block + edid->blocks > dev->edid_blocks)
 568                 edid->blocks = dev->edid_blocks - edid->start_block;
 569         memcpy(edid->edid, dev->edid, edid->blocks * 128);
 570         return 0;
 571 }