Hans Verkuil | ef834f7 | 2014-08-25 07:56:18 -0300 | [diff] [blame] | 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 | |
Mauro Carvalho Chehab | 1fc78bc | 2014-09-02 17:52:07 -0300 | [diff] [blame] | 189 | const struct vivid_fmt *vivid_get_format(struct vivid_dev *dev, u32 pixelformat) |
Hans Verkuil | ef834f7 | 2014-08-25 07:56:18 -0300 | [diff] [blame] | 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 | } |