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

   1 /*
   2  * vivid-vid-cap.c - video capture 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/vmalloc.h>
  24 #include <linux/videodev2.h>
  25 #include <linux/v4l2-dv-timings.h>
  26 #include <media/v4l2-common.h>
  27 #include <media/v4l2-event.h>
  28 #include <media/v4l2-dv-timings.h>
  29 #include <media/v4l2-rect.h>
  30
  31 #include "vivid-core.h"
  32 #include "vivid-vid-common.h"
  33 #include "vivid-kthread-cap.h"
  34 #include "vivid-vid-cap.h"
  35
  36 /* timeperframe: min/max and default */
  37 static const struct v4l2_fract
  38         tpf_min     = {.numerator = 1,          .denominator = FPS_MAX},
  39         tpf_max     = {.numerator = FPS_MAX,    .denominator = 1},
  40         tpf_default = {.numerator = 1,          .denominator = 30};
  41
  42 static const struct vivid_fmt formats_ovl[] = {
  43         {
  44                 .fourcc   = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
  45                 .vdownsampling = { 1 },
  46                 .bit_depth = { 16 },
  47                 .planes   = 1,
  48                 .buffers = 1,
  49         },
  50         {
  51                 .fourcc   = V4L2_PIX_FMT_XRGB555, /* gggbbbbb arrrrrgg */
  52                 .vdownsampling = { 1 },
  53                 .bit_depth = { 16 },
  54                 .planes   = 1,
  55                 .buffers = 1,
  56         },
  57         {
  58                 .fourcc   = V4L2_PIX_FMT_ARGB555, /* gggbbbbb arrrrrgg */
  59                 .vdownsampling = { 1 },
  60                 .bit_depth = { 16 },
  61                 .planes   = 1,
  62                 .buffers = 1,
  63         },
  64 };
  65
  66 /* The number of discrete webcam framesizes */
  67 #define VIVID_WEBCAM_SIZES 4
  68 /* The number of discrete webcam frameintervals */
  69 #define VIVID_WEBCAM_IVALS (VIVID_WEBCAM_SIZES * 2)
  70
  71 /* Sizes must be in increasing order */
  72 static const struct v4l2_frmsize_discrete webcam_sizes[VIVID_WEBCAM_SIZES] = {
  73         {  320, 180 },
  74         {  640, 360 },
  75         { 1280, 720 },
  76         { 1920, 1080 },
  77 };
  78
  79 /*
  80  * Intervals must be in increasing order and there must be twice as many
  81  * elements in this array as there are in webcam_sizes.
  82  */
  83 static const struct v4l2_fract webcam_intervals[VIVID_WEBCAM_IVALS] = {
  84         {  1, 2 },
  85         {  1, 5 },
  86         {  1, 10 },
  87         {  1, 15 },
  88         {  1, 25 },
  89         {  1, 30 },
  90         {  1, 50 },
  91         {  1, 60 },
  92 };
  93
  94 static const struct v4l2_discrete_probe webcam_probe = {
  95         webcam_sizes,
  96         VIVID_WEBCAM_SIZES
  97 };
  98
  99 static int vid_cap_queue_setup(struct vb2_queue *vq,
 100                        unsigned *nbuffers, unsigned *nplanes,
 101                        unsigned sizes[], void *alloc_ctxs[])
 102 {
 103         struct vivid_dev *dev = vb2_get_drv_priv(vq);
 104         unsigned buffers = tpg_g_buffers(&dev->tpg);
 105         unsigned h = dev->fmt_cap_rect.height;
 106         unsigned p;
 107
 108         if (dev->field_cap == V4L2_FIELD_ALTERNATE) {
 109                 /*
 110                  * You cannot use read() with FIELD_ALTERNATE since the field
 111                  * information (TOP/BOTTOM) cannot be passed back to the user.
 112                  */
 113                 if (vb2_fileio_is_active(vq))
 114                         return -EINVAL;
 115         }
 116
 117         if (dev->queue_setup_error) {
 118                 /*
 119                  * Error injection: test what happens if queue_setup() returns
 120                  * an error.
 121                  */
 122                 dev->queue_setup_error = false;
 123                 return -EINVAL;
 124         }
 125         if (*nplanes) {
 126                 /*
 127                  * Check if the number of requested planes match
 128                  * the number of buffers in the current format. You can't mix that.
 129                  */
 130                 if (*nplanes != buffers)
 131                         return -EINVAL;
 132                 for (p = 0; p < buffers; p++) {
 133                         if (sizes[p] < tpg_g_line_width(&dev->tpg, p) * h +
 134                                                 dev->fmt_cap->data_offset[p])
 135                                 return -EINVAL;
 136                 }
 137         } else {
 138                 for (p = 0; p < buffers; p++)
 139                         sizes[p] = tpg_g_line_width(&dev->tpg, p) * h +
 140                                         dev->fmt_cap->data_offset[p];
 141         }
 142
 143         if (vq->num_buffers + *nbuffers < 2)
 144                 *nbuffers = 2 - vq->num_buffers;
 145
 146         *nplanes = buffers;
 147
 148         /*
 149          * videobuf2-vmalloc allocator is context-less so no need to set
 150          * alloc_ctxs array.
 151          */
 152
 153         dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
 154         for (p = 0; p < buffers; p++)
 155                 dprintk(dev, 1, "%s: size[%u]=%u\n", __func__, p, sizes[p]);
 156
 157         return 0;
 158 }
 159
 160 static int vid_cap_buf_prepare(struct vb2_buffer *vb)
 161 {
 162         struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
 163         unsigned long size;
 164         unsigned buffers = tpg_g_buffers(&dev->tpg);
 165         unsigned p;
 166
 167         dprintk(dev, 1, "%s\n", __func__);
 168
 169         if (WARN_ON(NULL == dev->fmt_cap))
 170                 return -EINVAL;
 171
 172         if (dev->buf_prepare_error) {
 173                 /*
 174                  * Error injection: test what happens if buf_prepare() returns
 175                  * an error.
 176                  */
 177                 dev->buf_prepare_error = false;
 178                 return -EINVAL;
 179         }
 180         for (p = 0; p < buffers; p++) {
 181                 size = tpg_g_line_width(&dev->tpg, p) * dev->fmt_cap_rect.height +
 182                         dev->fmt_cap->data_offset[p];
 183
 184                 if (vb2_plane_size(vb, p) < size) {
 185                         dprintk(dev, 1, "%s data will not fit into plane %u (%lu < %lu)\n",
 186                                         __func__, p, vb2_plane_size(vb, p), size);
 187                         return -EINVAL;
 188                 }
 189
 190                 vb2_set_plane_payload(vb, p, size);
 191                 vb->planes[p].data_offset = dev->fmt_cap->data_offset[p];
 192         }
 193
 194         return 0;
 195 }
 196
 197 static void vid_cap_buf_finish(struct vb2_buffer *vb)
 198 {
 199         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 200         struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
 201         struct v4l2_timecode *tc = &vbuf->timecode;
 202         unsigned fps = 25;
 203         unsigned seq = vbuf->sequence;
 204
 205         if (!vivid_is_sdtv_cap(dev))
 206                 return;
 207
 208         /*
 209          * Set the timecode. Rarely used, so it is interesting to
 210          * test this.
 211          */
 212         vbuf->flags |= V4L2_BUF_FLAG_TIMECODE;
 213         if (dev->std_cap & V4L2_STD_525_60)
 214                 fps = 30;
 215         tc->type = (fps == 30) ? V4L2_TC_TYPE_30FPS : V4L2_TC_TYPE_25FPS;
 216         tc->flags = 0;
 217         tc->frames = seq % fps;
 218         tc->seconds = (seq / fps) % 60;
 219         tc->minutes = (seq / (60 * fps)) % 60;
 220         tc->hours = (seq / (60 * 60 * fps)) % 24;
 221 }
 222
 223 static void vid_cap_buf_queue(struct vb2_buffer *vb)
 224 {
 225         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 226         struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
 227         struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb);
 228
 229         dprintk(dev, 1, "%s\n", __func__);
 230
 231         spin_lock(&dev->slock);
 232         list_add_tail(&buf->list, &dev->vid_cap_active);
 233         spin_unlock(&dev->slock);
 234 }
 235
 236 static int vid_cap_start_streaming(struct vb2_queue *vq, unsigned count)
 237 {
 238         struct vivid_dev *dev = vb2_get_drv_priv(vq);
 239         unsigned i;
 240         int err;
 241
 242         if (vb2_is_streaming(&dev->vb_vid_out_q))
 243                 dev->can_loop_video = vivid_vid_can_loop(dev);
 244
 245         if (dev->kthread_vid_cap)
 246                 return 0;
 247
 248         dev->vid_cap_seq_count = 0;
 249         dprintk(dev, 1, "%s\n", __func__);
 250         for (i = 0; i < VIDEO_MAX_FRAME; i++)
 251                 dev->must_blank[i] = tpg_g_perc_fill(&dev->tpg) < 100;
 252         if (dev->start_streaming_error) {
 253                 dev->start_streaming_error = false;
 254                 err = -EINVAL;
 255         } else {
 256                 err = vivid_start_generating_vid_cap(dev, &dev->vid_cap_streaming);
 257         }
 258         if (err) {
 259                 struct vivid_buffer *buf, *tmp;
 260
 261                 list_for_each_entry_safe(buf, tmp, &dev->vid_cap_active, list) {
 262                         list_del(&buf->list);
 263                         vb2_buffer_done(&buf->vb.vb2_buf,
 264                                         VB2_BUF_STATE_QUEUED);
 265                 }
 266         }
 267         return err;
 268 }
 269
 270 /* abort streaming and wait for last buffer */
 271 static void vid_cap_stop_streaming(struct vb2_queue *vq)
 272 {
 273         struct vivid_dev *dev = vb2_get_drv_priv(vq);
 274
 275         dprintk(dev, 1, "%s\n", __func__);
 276         vivid_stop_generating_vid_cap(dev, &dev->vid_cap_streaming);
 277         dev->can_loop_video = false;
 278 }
 279
 280 const struct vb2_ops vivid_vid_cap_qops = {
 281         .queue_setup            = vid_cap_queue_setup,
 282         .buf_prepare            = vid_cap_buf_prepare,
 283         .buf_finish             = vid_cap_buf_finish,
 284         .buf_queue              = vid_cap_buf_queue,
 285         .start_streaming        = vid_cap_start_streaming,
 286         .stop_streaming         = vid_cap_stop_streaming,
 287         .wait_prepare           = vb2_ops_wait_prepare,
 288         .wait_finish            = vb2_ops_wait_finish,
 289 };
 290
 291 /*
 292  * Determine the 'picture' quality based on the current TV frequency: either
 293  * COLOR for a good 'signal', GRAY (grayscale picture) for a slightly off
 294  * signal or NOISE for no signal.
 295  */
 296 void vivid_update_quality(struct vivid_dev *dev)
 297 {
 298         unsigned freq_modulus;
 299
 300         if (dev->loop_video && (vivid_is_svid_cap(dev) || vivid_is_hdmi_cap(dev))) {
 301                 /*
 302                  * The 'noise' will only be replaced by the actual video
 303                  * if the output video matches the input video settings.
 304                  */
 305                 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
 306                 return;
 307         }
 308         if (vivid_is_hdmi_cap(dev) && VIVID_INVALID_SIGNAL(dev->dv_timings_signal_mode)) {
 309                 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
 310                 return;
 311         }
 312         if (vivid_is_sdtv_cap(dev) && VIVID_INVALID_SIGNAL(dev->std_signal_mode)) {
 313                 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
 314                 return;
 315         }
 316         if (!vivid_is_tv_cap(dev)) {
 317                 tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
 318                 return;
 319         }
 320
 321         /*
 322          * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
 323          * From +/- 0.25 MHz around the channel there is color, and from
 324          * +/- 1 MHz there is grayscale (chroma is lost).
 325          * Everywhere else it is just noise.
 326          */
 327         freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
 328         if (freq_modulus > 2 * 16) {
 329                 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE,
 330                         next_pseudo_random32(dev->tv_freq ^ 0x55) & 0x3f);
 331                 return;
 332         }
 333         if (freq_modulus < 12 /*0.75 * 16*/ || freq_modulus > 20 /*1.25 * 16*/)
 334                 tpg_s_quality(&dev->tpg, TPG_QUAL_GRAY, 0);
 335         else
 336                 tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
 337 }
 338
 339 /*
 340  * Get the current picture quality and the associated afc value.
 341  */
 342 static enum tpg_quality vivid_get_quality(struct vivid_dev *dev, s32 *afc)
 343 {
 344         unsigned freq_modulus;
 345
 346         if (afc)
 347                 *afc = 0;
 348         if (tpg_g_quality(&dev->tpg) == TPG_QUAL_COLOR ||
 349             tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE)
 350                 return tpg_g_quality(&dev->tpg);
 351
 352         /*
 353          * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
 354          * From +/- 0.25 MHz around the channel there is color, and from
 355          * +/- 1 MHz there is grayscale (chroma is lost).
 356          * Everywhere else it is just gray.
 357          */
 358         freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
 359         if (afc)
 360                 *afc = freq_modulus - 1 * 16;
 361         return TPG_QUAL_GRAY;
 362 }
 363
 364 enum tpg_video_aspect vivid_get_video_aspect(const struct vivid_dev *dev)
 365 {
 366         if (vivid_is_sdtv_cap(dev))
 367                 return dev->std_aspect_ratio;
 368
 369         if (vivid_is_hdmi_cap(dev))
 370                 return dev->dv_timings_aspect_ratio;
 371
 372         return TPG_VIDEO_ASPECT_IMAGE;
 373 }
 374
 375 static enum tpg_pixel_aspect vivid_get_pixel_aspect(const struct vivid_dev *dev)
 376 {
 377         if (vivid_is_sdtv_cap(dev))
 378                 return (dev->std_cap & V4L2_STD_525_60) ?
 379                         TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
 380
 381         if (vivid_is_hdmi_cap(dev) &&
 382             dev->src_rect.width == 720 && dev->src_rect.height <= 576)
 383                 return dev->src_rect.height == 480 ?
 384                         TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
 385
 386         return TPG_PIXEL_ASPECT_SQUARE;
 387 }
 388
 389 /*
 390  * Called whenever the format has to be reset which can occur when
 391  * changing inputs, standard, timings, etc.
 392  */
 393 void vivid_update_format_cap(struct vivid_dev *dev, bool keep_controls)
 394 {
 395         struct v4l2_bt_timings *bt = &dev->dv_timings_cap.bt;
 396         unsigned size;
 397         u64 pixelclock;
 398
 399         switch (dev->input_type[dev->input]) {
 400         case WEBCAM:
 401         default:
 402                 dev->src_rect.width = webcam_sizes[dev->webcam_size_idx].width;
 403                 dev->src_rect.height = webcam_sizes[dev->webcam_size_idx].height;
 404                 dev->timeperframe_vid_cap = webcam_intervals[dev->webcam_ival_idx];
 405                 dev->field_cap = V4L2_FIELD_NONE;
 406                 tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
 407                 break;
 408         case TV:
 409         case SVID:
 410                 dev->field_cap = dev->tv_field_cap;
 411                 dev->src_rect.width = 720;
 412                 if (dev->std_cap & V4L2_STD_525_60) {
 413                         dev->src_rect.height = 480;
 414                         dev->timeperframe_vid_cap = (struct v4l2_fract) { 1001, 30000 };
 415                         dev->service_set_cap = V4L2_SLICED_CAPTION_525;
 416                 } else {
 417                         dev->src_rect.height = 576;
 418                         dev->timeperframe_vid_cap = (struct v4l2_fract) { 1000, 25000 };
 419                         dev->service_set_cap = V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
 420                 }
 421                 tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
 422                 break;
 423         case HDMI:
 424                 dev->src_rect.width = bt->width;
 425                 dev->src_rect.height = bt->height;
 426                 size = V4L2_DV_BT_FRAME_WIDTH(bt) * V4L2_DV_BT_FRAME_HEIGHT(bt);
 427                 if (dev->reduced_fps && can_reduce_fps(bt)) {
 428                         pixelclock = div_u64(bt->pixelclock * 1000, 1001);
 429                         bt->flags |= V4L2_DV_FL_REDUCED_FPS;
 430                 } else {
 431                         pixelclock = bt->pixelclock;
 432                         bt->flags &= ~V4L2_DV_FL_REDUCED_FPS;
 433                 }
 434                 dev->timeperframe_vid_cap = (struct v4l2_fract) {
 435                         size / 100, (u32)pixelclock / 100
 436                 };
 437                 if (bt->interlaced)
 438                         dev->field_cap = V4L2_FIELD_ALTERNATE;
 439                 else
 440                         dev->field_cap = V4L2_FIELD_NONE;
 441
 442                 /*
 443                  * We can be called from within s_ctrl, in that case we can't
 444                  * set/get controls. Luckily we don't need to in that case.
 445                  */
 446                 if (keep_controls || !dev->colorspace)
 447                         break;
 448                 if (bt->flags & V4L2_DV_FL_IS_CE_VIDEO) {
 449                         if (bt->width == 720 && bt->height <= 576)
 450                                 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
 451                         else
 452                                 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_709);
 453                         v4l2_ctrl_s_ctrl(dev->real_rgb_range_cap, 1);
 454                 } else {
 455                         v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
 456                         v4l2_ctrl_s_ctrl(dev->real_rgb_range_cap, 0);
 457                 }
 458                 tpg_s_rgb_range(&dev->tpg, v4l2_ctrl_g_ctrl(dev->rgb_range_cap));
 459                 break;
 460         }
 461         vivid_update_quality(dev);
 462         tpg_reset_source(&dev->tpg, dev->src_rect.width, dev->src_rect.height, dev->field_cap);
 463         dev->crop_cap = dev->src_rect;
 464         dev->crop_bounds_cap = dev->src_rect;
 465         dev->compose_cap = dev->crop_cap;
 466         if (V4L2_FIELD_HAS_T_OR_B(dev->field_cap))
 467                 dev->compose_cap.height /= 2;
 468         dev->fmt_cap_rect = dev->compose_cap;
 469         tpg_s_video_aspect(&dev->tpg, vivid_get_video_aspect(dev));
 470         tpg_s_pixel_aspect(&dev->tpg, vivid_get_pixel_aspect(dev));
 471         tpg_update_mv_step(&dev->tpg);
 472 }
 473
 474 /* Map the field to something that is valid for the current input */
 475 static enum v4l2_field vivid_field_cap(struct vivid_dev *dev, enum v4l2_field field)
 476 {
 477         if (vivid_is_sdtv_cap(dev)) {
 478                 switch (field) {
 479                 case V4L2_FIELD_INTERLACED_TB:
 480                 case V4L2_FIELD_INTERLACED_BT:
 481                 case V4L2_FIELD_SEQ_TB:
 482                 case V4L2_FIELD_SEQ_BT:
 483                 case V4L2_FIELD_TOP:
 484                 case V4L2_FIELD_BOTTOM:
 485                 case V4L2_FIELD_ALTERNATE:
 486                         return field;
 487                 case V4L2_FIELD_INTERLACED:
 488                 default:
 489                         return V4L2_FIELD_INTERLACED;
 490                 }
 491         }
 492         if (vivid_is_hdmi_cap(dev))
 493                 return dev->dv_timings_cap.bt.interlaced ? V4L2_FIELD_ALTERNATE :
 494                                                        V4L2_FIELD_NONE;
 495         return V4L2_FIELD_NONE;
 496 }
 497
 498 static unsigned vivid_colorspace_cap(struct vivid_dev *dev)
 499 {
 500         if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
 501                 return tpg_g_colorspace(&dev->tpg);
 502         return dev->colorspace_out;
 503 }
 504
 505 static unsigned vivid_xfer_func_cap(struct vivid_dev *dev)
 506 {
 507         if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
 508                 return tpg_g_xfer_func(&dev->tpg);
 509         return dev->xfer_func_out;
 510 }
 511
 512 static unsigned vivid_ycbcr_enc_cap(struct vivid_dev *dev)
 513 {
 514         if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
 515                 return tpg_g_ycbcr_enc(&dev->tpg);
 516         return dev->ycbcr_enc_out;
 517 }
 518
 519 static unsigned vivid_quantization_cap(struct vivid_dev *dev)
 520 {
 521         if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
 522                 return tpg_g_quantization(&dev->tpg);
 523         return dev->quantization_out;
 524 }
 525
 526 int vivid_g_fmt_vid_cap(struct file *file, void *priv,
 527                                         struct v4l2_format *f)
 528 {
 529         struct vivid_dev *dev = video_drvdata(file);
 530         struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
 531         unsigned p;
 532
 533         mp->width        = dev->fmt_cap_rect.width;
 534         mp->height       = dev->fmt_cap_rect.height;
 535         mp->field        = dev->field_cap;
 536         mp->pixelformat  = dev->fmt_cap->fourcc;
 537         mp->colorspace   = vivid_colorspace_cap(dev);
 538         mp->xfer_func    = vivid_xfer_func_cap(dev);
 539         mp->ycbcr_enc    = vivid_ycbcr_enc_cap(dev);
 540         mp->quantization = vivid_quantization_cap(dev);
 541         mp->num_planes = dev->fmt_cap->buffers;
 542         for (p = 0; p < mp->num_planes; p++) {
 543                 mp->plane_fmt[p].bytesperline = tpg_g_bytesperline(&dev->tpg, p);
 544                 mp->plane_fmt[p].sizeimage =
 545                         tpg_g_line_width(&dev->tpg, p) * mp->height +
 546                         dev->fmt_cap->data_offset[p];
 547         }
 548         return 0;
 549 }
 550
 551 int vivid_try_fmt_vid_cap(struct file *file, void *priv,
 552                         struct v4l2_format *f)
 553 {
 554         struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
 555         struct v4l2_plane_pix_format *pfmt = mp->plane_fmt;
 556         struct vivid_dev *dev = video_drvdata(file);
 557         const struct vivid_fmt *fmt;
 558         unsigned bytesperline, max_bpl;
 559         unsigned factor = 1;
 560         unsigned w, h;
 561         unsigned p;
 562
 563         fmt = vivid_get_format(dev, mp->pixelformat);
 564         if (!fmt) {
 565                 dprintk(dev, 1, "Fourcc format (0x%08x) unknown.\n",
 566                         mp->pixelformat);
 567                 mp->pixelformat = V4L2_PIX_FMT_YUYV;
 568                 fmt = vivid_get_format(dev, mp->pixelformat);
 569         }
 570
 571         mp->field = vivid_field_cap(dev, mp->field);
 572         if (vivid_is_webcam(dev)) {
 573                 const struct v4l2_frmsize_discrete *sz =
 574                         v4l2_find_nearest_format(&webcam_probe, mp->width, mp->height);
 575
 576                 w = sz->width;
 577                 h = sz->height;
 578         } else if (vivid_is_sdtv_cap(dev)) {
 579                 w = 720;
 580                 h = (dev->std_cap & V4L2_STD_525_60) ? 480 : 576;
 581         } else {
 582                 w = dev->src_rect.width;
 583                 h = dev->src_rect.height;
 584         }
 585         if (V4L2_FIELD_HAS_T_OR_B(mp->field))
 586                 factor = 2;
 587         if (vivid_is_webcam(dev) ||
 588             (!dev->has_scaler_cap && !dev->has_crop_cap && !dev->has_compose_cap)) {
 589                 mp->width = w;
 590                 mp->height = h / factor;
 591         } else {
 592                 struct v4l2_rect r = { 0, 0, mp->width, mp->height * factor };
 593
 594                 v4l2_rect_set_min_size(&r, &vivid_min_rect);
 595                 v4l2_rect_set_max_size(&r, &vivid_max_rect);
 596                 if (dev->has_scaler_cap && !dev->has_compose_cap) {
 597                         struct v4l2_rect max_r = { 0, 0, MAX_ZOOM * w, MAX_ZOOM * h };
 598
 599                         v4l2_rect_set_max_size(&r, &max_r);
 600                 } else if (!dev->has_scaler_cap && dev->has_crop_cap && !dev->has_compose_cap) {
 601                         v4l2_rect_set_max_size(&r, &dev->src_rect);
 602                 } else if (!dev->has_scaler_cap && !dev->has_crop_cap) {
 603                         v4l2_rect_set_min_size(&r, &dev->src_rect);
 604                 }
 605                 mp->width = r.width;
 606                 mp->height = r.height / factor;
 607         }
 608
 609         /* This driver supports custom bytesperline values */
 610
 611         mp->num_planes = fmt->buffers;
 612         for (p = 0; p < mp->num_planes; p++) {
 613                 /* Calculate the minimum supported bytesperline value */
 614                 bytesperline = (mp->width * fmt->bit_depth[p]) >> 3;
 615                 /* Calculate the maximum supported bytesperline value */
 616                 max_bpl = (MAX_ZOOM * MAX_WIDTH * fmt->bit_depth[p]) >> 3;
 617
 618                 if (pfmt[p].bytesperline > max_bpl)
 619                         pfmt[p].bytesperline = max_bpl;
 620                 if (pfmt[p].bytesperline < bytesperline)
 621                         pfmt[p].bytesperline = bytesperline;
 622                 pfmt[p].sizeimage = tpg_calc_line_width(&dev->tpg, p, pfmt[p].bytesperline) *
 623                         mp->height + fmt->data_offset[p];
 624                 memset(pfmt[p].reserved, 0, sizeof(pfmt[p].reserved));
 625         }
 626         mp->colorspace = vivid_colorspace_cap(dev);
 627         mp->ycbcr_enc = vivid_ycbcr_enc_cap(dev);
 628         mp->xfer_func = vivid_xfer_func_cap(dev);
 629         mp->quantization = vivid_quantization_cap(dev);
 630         memset(mp->reserved, 0, sizeof(mp->reserved));
 631         return 0;
 632 }
 633
 634 int vivid_s_fmt_vid_cap(struct file *file, void *priv,
 635                                         struct v4l2_format *f)
 636 {
 637         struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
 638         struct vivid_dev *dev = video_drvdata(file);
 639         struct v4l2_rect *crop = &dev->crop_cap;
 640         struct v4l2_rect *compose = &dev->compose_cap;
 641         struct vb2_queue *q = &dev->vb_vid_cap_q;
 642         int ret = vivid_try_fmt_vid_cap(file, priv, f);
 643         unsigned factor = 1;
 644         unsigned p;
 645         unsigned i;
 646
 647         if (ret < 0)
 648                 return ret;
 649
 650         if (vb2_is_busy(q)) {
 651                 dprintk(dev, 1, "%s device busy\n", __func__);
 652                 return -EBUSY;
 653         }
 654
 655         if (dev->overlay_cap_owner && dev->fb_cap.fmt.pixelformat != mp->pixelformat) {
 656                 dprintk(dev, 1, "overlay is active, can't change pixelformat\n");
 657                 return -EBUSY;
 658         }
 659
 660         dev->fmt_cap = vivid_get_format(dev, mp->pixelformat);
 661         if (V4L2_FIELD_HAS_T_OR_B(mp->field))
 662                 factor = 2;
 663
 664         /* Note: the webcam input doesn't support scaling, cropping or composing */
 665
 666         if (!vivid_is_webcam(dev) &&
 667             (dev->has_scaler_cap || dev->has_crop_cap || dev->has_compose_cap)) {
 668                 struct v4l2_rect r = { 0, 0, mp->width, mp->height };
 669
 670                 if (dev->has_scaler_cap) {
 671                         if (dev->has_compose_cap)
 672                                 v4l2_rect_map_inside(compose, &r);
 673                         else
 674                                 *compose = r;
 675                         if (dev->has_crop_cap && !dev->has_compose_cap) {
 676                                 struct v4l2_rect min_r = {
 677                                         0, 0,
 678                                         r.width / MAX_ZOOM,
 679                                         factor * r.height / MAX_ZOOM
 680                                 };
 681                                 struct v4l2_rect max_r = {
 682                                         0, 0,
 683                                         r.width * MAX_ZOOM,
 684                                         factor * r.height * MAX_ZOOM
 685                                 };
 686
 687                                 v4l2_rect_set_min_size(crop, &min_r);
 688                                 v4l2_rect_set_max_size(crop, &max_r);
 689                                 v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
 690                         } else if (dev->has_crop_cap) {
 691                                 struct v4l2_rect min_r = {
 692                                         0, 0,
 693                                         compose->width / MAX_ZOOM,
 694                                         factor * compose->height / MAX_ZOOM
 695                                 };
 696                                 struct v4l2_rect max_r = {
 697                                         0, 0,
 698                                         compose->width * MAX_ZOOM,
 699                                         factor * compose->height * MAX_ZOOM
 700                                 };
 701
 702                                 v4l2_rect_set_min_size(crop, &min_r);
 703                                 v4l2_rect_set_max_size(crop, &max_r);
 704                                 v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
 705                         }
 706                 } else if (dev->has_crop_cap && !dev->has_compose_cap) {
 707                         r.height *= factor;
 708                         v4l2_rect_set_size_to(crop, &r);
 709                         v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
 710                         r = *crop;
 711                         r.height /= factor;
 712                         v4l2_rect_set_size_to(compose, &r);
 713                 } else if (!dev->has_crop_cap) {
 714                         v4l2_rect_map_inside(compose, &r);
 715                 } else {
 716                         r.height *= factor;
 717                         v4l2_rect_set_max_size(crop, &r);
 718                         v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
 719                         compose->top *= factor;
 720                         compose->height *= factor;
 721                         v4l2_rect_set_size_to(compose, crop);
 722                         v4l2_rect_map_inside(compose, &r);
 723                         compose->top /= factor;
 724                         compose->height /= factor;
 725                 }
 726         } else if (vivid_is_webcam(dev)) {
 727                 /* Guaranteed to be a match */
 728                 for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
 729                         if (webcam_sizes[i].width == mp->width &&
 730                                         webcam_sizes[i].height == mp->height)
 731                                 break;
 732                 dev->webcam_size_idx = i;
 733                 if (dev->webcam_ival_idx >= 2 * (VIVID_WEBCAM_SIZES - i))
 734                         dev->webcam_ival_idx = 2 * (VIVID_WEBCAM_SIZES - i) - 1;
 735                 vivid_update_format_cap(dev, false);
 736         } else {
 737                 struct v4l2_rect r = { 0, 0, mp->width, mp->height };
 738
 739                 v4l2_rect_set_size_to(compose, &r);
 740                 r.height *= factor;
 741                 v4l2_rect_set_size_to(crop, &r);
 742         }
 743
 744         dev->fmt_cap_rect.width = mp->width;
 745         dev->fmt_cap_rect.height = mp->height;
 746         tpg_s_buf_height(&dev->tpg, mp->height);
 747         tpg_s_fourcc(&dev->tpg, dev->fmt_cap->fourcc);
 748         for (p = 0; p < tpg_g_buffers(&dev->tpg); p++)
 749                 tpg_s_bytesperline(&dev->tpg, p, mp->plane_fmt[p].bytesperline);
 750         dev->field_cap = mp->field;
 751         if (dev->field_cap == V4L2_FIELD_ALTERNATE)
 752                 tpg_s_field(&dev->tpg, V4L2_FIELD_TOP, true);
 753         else
 754                 tpg_s_field(&dev->tpg, dev->field_cap, false);
 755         tpg_s_crop_compose(&dev->tpg, &dev->crop_cap, &dev->compose_cap);
 756         if (vivid_is_sdtv_cap(dev))
 757                 dev->tv_field_cap = mp->field;
 758         tpg_update_mv_step(&dev->tpg);
 759         return 0;
 760 }
 761
 762 int vidioc_g_fmt_vid_cap_mplane(struct file *file, void *priv,
 763                                         struct v4l2_format *f)
 764 {
 765         struct vivid_dev *dev = video_drvdata(file);
 766
 767         if (!dev->multiplanar)
 768                 return -ENOTTY;
 769         return vivid_g_fmt_vid_cap(file, priv, f);
 770 }
 771
 772 int vidioc_try_fmt_vid_cap_mplane(struct file *file, void *priv,
 773                         struct v4l2_format *f)
 774 {
 775         struct vivid_dev *dev = video_drvdata(file);
 776
 777         if (!dev->multiplanar)
 778                 return -ENOTTY;
 779         return vivid_try_fmt_vid_cap(file, priv, f);
 780 }
 781
 782 int vidioc_s_fmt_vid_cap_mplane(struct file *file, void *priv,
 783                         struct v4l2_format *f)
 784 {
 785         struct vivid_dev *dev = video_drvdata(file);
 786
 787         if (!dev->multiplanar)
 788                 return -ENOTTY;
 789         return vivid_s_fmt_vid_cap(file, priv, f);
 790 }
 791
 792 int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 793                                         struct v4l2_format *f)
 794 {
 795         struct vivid_dev *dev = video_drvdata(file);
 796
 797         if (dev->multiplanar)
 798                 return -ENOTTY;
 799         return fmt_sp2mp_func(file, priv, f, vivid_g_fmt_vid_cap);
 800 }
 801
 802 int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 803                         struct v4l2_format *f)
 804 {
 805         struct vivid_dev *dev = video_drvdata(file);
 806
 807         if (dev->multiplanar)
 808                 return -ENOTTY;
 809         return fmt_sp2mp_func(file, priv, f, vivid_try_fmt_vid_cap);
 810 }
 811
 812 int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 813                         struct v4l2_format *f)
 814 {
 815         struct vivid_dev *dev = video_drvdata(file);
 816
 817         if (dev->multiplanar)
 818                 return -ENOTTY;
 819         return fmt_sp2mp_func(file, priv, f, vivid_s_fmt_vid_cap);
 820 }
 821
 822 int vivid_vid_cap_g_selection(struct file *file, void *priv,
 823                               struct v4l2_selection *sel)
 824 {
 825         struct vivid_dev *dev = video_drvdata(file);
 826
 827         if (!dev->has_crop_cap && !dev->has_compose_cap)
 828                 return -ENOTTY;
 829         if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 830                 return -EINVAL;
 831         if (vivid_is_webcam(dev))
 832                 return -EINVAL;
 833
 834         sel->r.left = sel->r.top = 0;
 835         switch (sel->target) {
 836         case V4L2_SEL_TGT_CROP:
 837                 if (!dev->has_crop_cap)
 838                         return -EINVAL;
 839                 sel->r = dev->crop_cap;
 840                 break;
 841         case V4L2_SEL_TGT_CROP_DEFAULT:
 842         case V4L2_SEL_TGT_CROP_BOUNDS:
 843                 if (!dev->has_crop_cap)
 844                         return -EINVAL;
 845                 sel->r = dev->src_rect;
 846                 break;
 847         case V4L2_SEL_TGT_COMPOSE_BOUNDS:
 848                 if (!dev->has_compose_cap)
 849                         return -EINVAL;
 850                 sel->r = vivid_max_rect;
 851                 break;
 852         case V4L2_SEL_TGT_COMPOSE:
 853                 if (!dev->has_compose_cap)
 854                         return -EINVAL;
 855                 sel->r = dev->compose_cap;
 856                 break;
 857         case V4L2_SEL_TGT_COMPOSE_DEFAULT:
 858                 if (!dev->has_compose_cap)
 859                         return -EINVAL;
 860                 sel->r = dev->fmt_cap_rect;
 861                 break;
 862         default:
 863                 return -EINVAL;
 864         }
 865         return 0;
 866 }
 867
 868 int vivid_vid_cap_s_selection(struct file *file, void *fh, struct v4l2_selection *s)
 869 {
 870         struct vivid_dev *dev = video_drvdata(file);
 871         struct v4l2_rect *crop = &dev->crop_cap;
 872         struct v4l2_rect *compose = &dev->compose_cap;
 873         unsigned factor = V4L2_FIELD_HAS_T_OR_B(dev->field_cap) ? 2 : 1;
 874         int ret;
 875
 876         if (!dev->has_crop_cap && !dev->has_compose_cap)
 877                 return -ENOTTY;
 878         if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 879                 return -EINVAL;
 880         if (vivid_is_webcam(dev))
 881                 return -EINVAL;
 882
 883         switch (s->target) {
 884         case V4L2_SEL_TGT_CROP:
 885                 if (!dev->has_crop_cap)
 886                         return -EINVAL;
 887                 ret = vivid_vid_adjust_sel(s->flags, &s->r);
 888                 if (ret)
 889                         return ret;
 890                 v4l2_rect_set_min_size(&s->r, &vivid_min_rect);
 891                 v4l2_rect_set_max_size(&s->r, &dev->src_rect);
 892                 v4l2_rect_map_inside(&s->r, &dev->crop_bounds_cap);
 893                 s->r.top /= factor;
 894                 s->r.height /= factor;
 895                 if (dev->has_scaler_cap) {
 896                         struct v4l2_rect fmt = dev->fmt_cap_rect;
 897                         struct v4l2_rect max_rect = {
 898                                 0, 0,
 899                                 s->r.width * MAX_ZOOM,
 900                                 s->r.height * MAX_ZOOM
 901                         };
 902                         struct v4l2_rect min_rect = {
 903                                 0, 0,
 904                                 s->r.width / MAX_ZOOM,
 905                                 s->r.height / MAX_ZOOM
 906                         };
 907
 908                         v4l2_rect_set_min_size(&fmt, &min_rect);
 909                         if (!dev->has_compose_cap)
 910                                 v4l2_rect_set_max_size(&fmt, &max_rect);
 911                         if (!v4l2_rect_same_size(&dev->fmt_cap_rect, &fmt) &&
 912                             vb2_is_busy(&dev->vb_vid_cap_q))
 913                                 return -EBUSY;
 914                         if (dev->has_compose_cap) {
 915                                 v4l2_rect_set_min_size(compose, &min_rect);
 916                                 v4l2_rect_set_max_size(compose, &max_rect);
 917                         }
 918                         dev->fmt_cap_rect = fmt;
 919                         tpg_s_buf_height(&dev->tpg, fmt.height);
 920                 } else if (dev->has_compose_cap) {
 921                         struct v4l2_rect fmt = dev->fmt_cap_rect;
 922
 923                         v4l2_rect_set_min_size(&fmt, &s->r);
 924                         if (!v4l2_rect_same_size(&dev->fmt_cap_rect, &fmt) &&
 925                             vb2_is_busy(&dev->vb_vid_cap_q))
 926                                 return -EBUSY;
 927                         dev->fmt_cap_rect = fmt;
 928                         tpg_s_buf_height(&dev->tpg, fmt.height);
 929                         v4l2_rect_set_size_to(compose, &s->r);
 930                         v4l2_rect_map_inside(compose, &dev->fmt_cap_rect);
 931                 } else {
 932                         if (!v4l2_rect_same_size(&s->r, &dev->fmt_cap_rect) &&
 933                             vb2_is_busy(&dev->vb_vid_cap_q))
 934                                 return -EBUSY;
 935                         v4l2_rect_set_size_to(&dev->fmt_cap_rect, &s->r);
 936                         v4l2_rect_set_size_to(compose, &s->r);
 937                         v4l2_rect_map_inside(compose, &dev->fmt_cap_rect);
 938                         tpg_s_buf_height(&dev->tpg, dev->fmt_cap_rect.height);
 939                 }
 940                 s->r.top *= factor;
 941                 s->r.height *= factor;
 942                 *crop = s->r;
 943                 break;
 944         case V4L2_SEL_TGT_COMPOSE:
 945                 if (!dev->has_compose_cap)
 946                         return -EINVAL;
 947                 ret = vivid_vid_adjust_sel(s->flags, &s->r);
 948                 if (ret)
 949                         return ret;
 950                 v4l2_rect_set_min_size(&s->r, &vivid_min_rect);
 951                 v4l2_rect_set_max_size(&s->r, &dev->fmt_cap_rect);
 952                 if (dev->has_scaler_cap) {
 953                         struct v4l2_rect max_rect = {
 954                                 0, 0,
 955                                 dev->src_rect.width * MAX_ZOOM,
 956                                 (dev->src_rect.height / factor) * MAX_ZOOM
 957                         };
 958
 959                         v4l2_rect_set_max_size(&s->r, &max_rect);
 960                         if (dev->has_crop_cap) {
 961                                 struct v4l2_rect min_rect = {
 962                                         0, 0,
 963                                         s->r.width / MAX_ZOOM,
 964                                         (s->r.height * factor) / MAX_ZOOM
 965                                 };
 966                                 struct v4l2_rect max_rect = {
 967                                         0, 0,
 968                                         s->r.width * MAX_ZOOM,
 969                                         (s->r.height * factor) * MAX_ZOOM
 970                                 };
 971
 972                                 v4l2_rect_set_min_size(crop, &min_rect);
 973                                 v4l2_rect_set_max_size(crop, &max_rect);
 974                                 v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
 975                         }
 976                 } else if (dev->has_crop_cap) {
 977                         s->r.top *= factor;
 978                         s->r.height *= factor;
 979                         v4l2_rect_set_max_size(&s->r, &dev->src_rect);
 980                         v4l2_rect_set_size_to(crop, &s->r);
 981                         v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
 982                         s->r.top /= factor;
 983                         s->r.height /= factor;
 984                 } else {
 985                         v4l2_rect_set_size_to(&s->r, &dev->src_rect);
 986                         s->r.height /= factor;
 987                 }
 988                 v4l2_rect_map_inside(&s->r, &dev->fmt_cap_rect);
 989                 if (dev->bitmap_cap && (compose->width != s->r.width ||
 990                                         compose->height != s->r.height)) {
 991                         kfree(dev->bitmap_cap);
 992                         dev->bitmap_cap = NULL;
 993                 }
 994                 *compose = s->r;
 995                 break;
 996         default:
 997                 return -EINVAL;
 998         }
 999
1000         tpg_s_crop_compose(&dev->tpg, crop, compose);
1001         return 0;
1002 }
1003
1004 int vivid_vid_cap_cropcap(struct file *file, void *priv,
1005                               struct v4l2_cropcap *cap)
1006 {
1007         struct vivid_dev *dev = video_drvdata(file);
1008
1009         if (cap->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1010                 return -EINVAL;
1011
1012         switch (vivid_get_pixel_aspect(dev)) {
1013         case TPG_PIXEL_ASPECT_NTSC:
1014                 cap->pixelaspect.numerator = 11;
1015                 cap->pixelaspect.denominator = 10;
1016                 break;
1017         case TPG_PIXEL_ASPECT_PAL:
1018                 cap->pixelaspect.numerator = 54;
1019                 cap->pixelaspect.denominator = 59;
1020                 break;
1021         case TPG_PIXEL_ASPECT_SQUARE:
1022                 cap->pixelaspect.numerator = 1;
1023                 cap->pixelaspect.denominator = 1;
1024                 break;
1025         }
1026         return 0;
1027 }
1028
1029 int vidioc_enum_fmt_vid_overlay(struct file *file, void  *priv,
1030                                         struct v4l2_fmtdesc *f)
1031 {
1032         struct vivid_dev *dev = video_drvdata(file);
1033         const struct vivid_fmt *fmt;
1034
1035         if (dev->multiplanar)
1036                 return -ENOTTY;
1037
1038         if (f->index >= ARRAY_SIZE(formats_ovl))
1039                 return -EINVAL;
1040
1041         fmt = &formats_ovl[f->index];
1042
1043         f->pixelformat = fmt->fourcc;
1044         return 0;
1045 }
1046
1047 int vidioc_g_fmt_vid_overlay(struct file *file, void *priv,
1048                                         struct v4l2_format *f)
1049 {
1050         struct vivid_dev *dev = video_drvdata(file);
1051         const struct v4l2_rect *compose = &dev->compose_cap;
1052         struct v4l2_window *win = &f->fmt.win;
1053         unsigned clipcount = win->clipcount;
1054
1055         if (dev->multiplanar)
1056                 return -ENOTTY;
1057
1058         win->w.top = dev->overlay_cap_top;
1059         win->w.left = dev->overlay_cap_left;
1060         win->w.width = compose->width;
1061         win->w.height = compose->height;
1062         win->field = dev->overlay_cap_field;
1063         win->clipcount = dev->clipcount_cap;
1064         if (clipcount > dev->clipcount_cap)
1065                 clipcount = dev->clipcount_cap;
1066         if (dev->bitmap_cap == NULL)
1067                 win->bitmap = NULL;
1068         else if (win->bitmap) {
1069                 if (copy_to_user(win->bitmap, dev->bitmap_cap,
1070                     ((compose->width + 7) / 8) * compose->height))
1071                         return -EFAULT;
1072         }
1073         if (clipcount && win->clips) {
1074                 if (copy_to_user(win->clips, dev->clips_cap,
1075                                  clipcount * sizeof(dev->clips_cap[0])))
1076                         return -EFAULT;
1077         }
1078         return 0;
1079 }
1080
1081 int vidioc_try_fmt_vid_overlay(struct file *file, void *priv,
1082                                         struct v4l2_format *f)
1083 {
1084         struct vivid_dev *dev = video_drvdata(file);
1085         const struct v4l2_rect *compose = &dev->compose_cap;
1086         struct v4l2_window *win = &f->fmt.win;
1087         int i, j;
1088
1089         if (dev->multiplanar)
1090                 return -ENOTTY;
1091
1092         win->w.left = clamp_t(int, win->w.left,
1093                               -dev->fb_cap.fmt.width, dev->fb_cap.fmt.width);
1094         win->w.top = clamp_t(int, win->w.top,
1095                              -dev->fb_cap.fmt.height, dev->fb_cap.fmt.height);
1096         win->w.width = compose->width;
1097         win->w.height = compose->height;
1098         if (win->field != V4L2_FIELD_BOTTOM && win->field != V4L2_FIELD_TOP)
1099                 win->field = V4L2_FIELD_ANY;
1100         win->chromakey = 0;
1101         win->global_alpha = 0;
1102         if (win->clipcount && !win->clips)
1103                 win->clipcount = 0;
1104         if (win->clipcount > MAX_CLIPS)
1105                 win->clipcount = MAX_CLIPS;
1106         if (win->clipcount) {
1107                 if (copy_from_user(dev->try_clips_cap, win->clips,
1108                                    win->clipcount * sizeof(dev->clips_cap[0])))
1109                         return -EFAULT;
1110                 for (i = 0; i < win->clipcount; i++) {
1111                         struct v4l2_rect *r = &dev->try_clips_cap[i].c;
1112
1113                         r->top = clamp_t(s32, r->top, 0, dev->fb_cap.fmt.height - 1);
1114                         r->height = clamp_t(s32, r->height, 1, dev->fb_cap.fmt.height - r->top);
1115                         r->left = clamp_t(u32, r->left, 0, dev->fb_cap.fmt.width - 1);
1116                         r->width = clamp_t(u32, r->width, 1, dev->fb_cap.fmt.width - r->left);
1117                 }
1118                 /*
1119                  * Yeah, so sue me, it's an O(n^2) algorithm. But n is a small
1120                  * number and it's typically a one-time deal.
1121                  */
1122                 for (i = 0; i < win->clipcount - 1; i++) {
1123                         struct v4l2_rect *r1 = &dev->try_clips_cap[i].c;
1124
1125                         for (j = i + 1; j < win->clipcount; j++) {
1126                                 struct v4l2_rect *r2 = &dev->try_clips_cap[j].c;
1127
1128                                 if (v4l2_rect_overlap(r1, r2))
1129                                         return -EINVAL;
1130                         }
1131                 }
1132                 if (copy_to_user(win->clips, dev->try_clips_cap,
1133                                  win->clipcount * sizeof(dev->clips_cap[0])))
1134                         return -EFAULT;
1135         }
1136         return 0;
1137 }
1138
1139 int vidioc_s_fmt_vid_overlay(struct file *file, void *priv,
1140                                         struct v4l2_format *f)
1141 {
1142         struct vivid_dev *dev = video_drvdata(file);
1143         const struct v4l2_rect *compose = &dev->compose_cap;
1144         struct v4l2_window *win = &f->fmt.win;
1145         int ret = vidioc_try_fmt_vid_overlay(file, priv, f);
1146         unsigned bitmap_size = ((compose->width + 7) / 8) * compose->height;
1147         unsigned clips_size = win->clipcount * sizeof(dev->clips_cap[0]);
1148         void *new_bitmap = NULL;
1149
1150         if (ret)
1151                 return ret;
1152
1153         if (win->bitmap) {
1154                 new_bitmap = vzalloc(bitmap_size);
1155
1156                 if (new_bitmap == NULL)
1157                         return -ENOMEM;
1158                 if (copy_from_user(new_bitmap, win->bitmap, bitmap_size)) {
1159                         vfree(new_bitmap);
1160                         return -EFAULT;
1161                 }
1162         }
1163
1164         dev->overlay_cap_top = win->w.top;
1165         dev->overlay_cap_left = win->w.left;
1166         dev->overlay_cap_field = win->field;
1167         vfree(dev->bitmap_cap);
1168         dev->bitmap_cap = new_bitmap;
1169         dev->clipcount_cap = win->clipcount;
1170         if (dev->clipcount_cap)
1171                 memcpy(dev->clips_cap, dev->try_clips_cap, clips_size);
1172         return 0;
1173 }
1174
1175 int vivid_vid_cap_overlay(struct file *file, void *fh, unsigned i)
1176 {
1177         struct vivid_dev *dev = video_drvdata(file);
1178
1179         if (dev->multiplanar)
1180                 return -ENOTTY;
1181
1182         if (i && dev->fb_vbase_cap == NULL)
1183                 return -EINVAL;
1184
1185         if (i && dev->fb_cap.fmt.pixelformat != dev->fmt_cap->fourcc) {
1186                 dprintk(dev, 1, "mismatch between overlay and video capture pixelformats\n");
1187                 return -EINVAL;
1188         }
1189
1190         if (dev->overlay_cap_owner && dev->overlay_cap_owner != fh)
1191                 return -EBUSY;
1192         dev->overlay_cap_owner = i ? fh : NULL;
1193         return 0;
1194 }
1195
1196 int vivid_vid_cap_g_fbuf(struct file *file, void *fh,
1197                                 struct v4l2_framebuffer *a)
1198 {
1199         struct vivid_dev *dev = video_drvdata(file);
1200
1201         if (dev->multiplanar)
1202                 return -ENOTTY;
1203
1204         *a = dev->fb_cap;
1205         a->capability = V4L2_FBUF_CAP_BITMAP_CLIPPING |
1206                         V4L2_FBUF_CAP_LIST_CLIPPING;
1207         a->flags = V4L2_FBUF_FLAG_PRIMARY;
1208         a->fmt.field = V4L2_FIELD_NONE;
1209         a->fmt.colorspace = V4L2_COLORSPACE_SRGB;
1210         a->fmt.priv = 0;
1211         return 0;
1212 }
1213
1214 int vivid_vid_cap_s_fbuf(struct file *file, void *fh,
1215                                 const struct v4l2_framebuffer *a)
1216 {
1217         struct vivid_dev *dev = video_drvdata(file);
1218         const struct vivid_fmt *fmt;
1219
1220         if (dev->multiplanar)
1221                 return -ENOTTY;
1222
1223         if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO))
1224                 return -EPERM;
1225
1226         if (dev->overlay_cap_owner)
1227                 return -EBUSY;
1228
1229         if (a->base == NULL) {
1230                 dev->fb_cap.base = NULL;
1231                 dev->fb_vbase_cap = NULL;
1232                 return 0;
1233         }
1234
1235         if (a->fmt.width < 48 || a->fmt.height < 32)
1236                 return -EINVAL;
1237         fmt = vivid_get_format(dev, a->fmt.pixelformat);
1238         if (!fmt || !fmt->can_do_overlay)
1239                 return -EINVAL;
1240         if (a->fmt.bytesperline < (a->fmt.width * fmt->bit_depth[0]) / 8)
1241                 return -EINVAL;
1242         if (a->fmt.height * a->fmt.bytesperline < a->fmt.sizeimage)
1243                 return -EINVAL;
1244
1245         dev->fb_vbase_cap = phys_to_virt((unsigned long)a->base);
1246         dev->fb_cap = *a;
1247         dev->overlay_cap_left = clamp_t(int, dev->overlay_cap_left,
1248                                     -dev->fb_cap.fmt.width, dev->fb_cap.fmt.width);
1249         dev->overlay_cap_top = clamp_t(int, dev->overlay_cap_top,
1250                                    -dev->fb_cap.fmt.height, dev->fb_cap.fmt.height);
1251         return 0;
1252 }
1253
1254 static const struct v4l2_audio vivid_audio_inputs[] = {
1255         { 0, "TV", V4L2_AUDCAP_STEREO },
1256         { 1, "Line-In", V4L2_AUDCAP_STEREO },
1257 };
1258
1259 int vidioc_enum_input(struct file *file, void *priv,
1260                                 struct v4l2_input *inp)
1261 {
1262         struct vivid_dev *dev = video_drvdata(file);
1263
1264         if (inp->index >= dev->num_inputs)
1265                 return -EINVAL;
1266
1267         inp->type = V4L2_INPUT_TYPE_CAMERA;
1268         switch (dev->input_type[inp->index]) {
1269         case WEBCAM:
1270                 snprintf(inp->name, sizeof(inp->name), "Webcam %u",
1271                                 dev->input_name_counter[inp->index]);
1272                 inp->capabilities = 0;
1273                 break;
1274         case TV:
1275                 snprintf(inp->name, sizeof(inp->name), "TV %u",
1276                                 dev->input_name_counter[inp->index]);
1277                 inp->type = V4L2_INPUT_TYPE_TUNER;
1278                 inp->std = V4L2_STD_ALL;
1279                 if (dev->has_audio_inputs)
1280                         inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1281                 inp->capabilities = V4L2_IN_CAP_STD;
1282                 break;
1283         case SVID:
1284                 snprintf(inp->name, sizeof(inp->name), "S-Video %u",
1285                                 dev->input_name_counter[inp->index]);
1286                 inp->std = V4L2_STD_ALL;
1287                 if (dev->has_audio_inputs)
1288                         inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1289                 inp->capabilities = V4L2_IN_CAP_STD;
1290                 break;
1291         case HDMI:
1292                 snprintf(inp->name, sizeof(inp->name), "HDMI %u",
1293                                 dev->input_name_counter[inp->index]);
1294                 inp->capabilities = V4L2_IN_CAP_DV_TIMINGS;
1295                 if (dev->edid_blocks == 0 ||
1296                     dev->dv_timings_signal_mode == NO_SIGNAL)
1297                         inp->status |= V4L2_IN_ST_NO_SIGNAL;
1298                 else if (dev->dv_timings_signal_mode == NO_LOCK ||
1299                          dev->dv_timings_signal_mode == OUT_OF_RANGE)
1300                         inp->status |= V4L2_IN_ST_NO_H_LOCK;
1301                 break;
1302         }
1303         if (dev->sensor_hflip)
1304                 inp->status |= V4L2_IN_ST_HFLIP;
1305         if (dev->sensor_vflip)
1306                 inp->status |= V4L2_IN_ST_VFLIP;
1307         if (dev->input == inp->index && vivid_is_sdtv_cap(dev)) {
1308                 if (dev->std_signal_mode == NO_SIGNAL) {
1309                         inp->status |= V4L2_IN_ST_NO_SIGNAL;
1310                 } else if (dev->std_signal_mode == NO_LOCK) {
1311                         inp->status |= V4L2_IN_ST_NO_H_LOCK;
1312                 } else if (vivid_is_tv_cap(dev)) {
1313                         switch (tpg_g_quality(&dev->tpg)) {
1314                         case TPG_QUAL_GRAY:
1315                                 inp->status |= V4L2_IN_ST_COLOR_KILL;
1316                                 break;
1317                         case TPG_QUAL_NOISE:
1318                                 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1319                                 break;
1320                         default:
1321                                 break;
1322                         }
1323                 }
1324         }
1325         return 0;
1326 }
1327
1328 int vidioc_g_input(struct file *file, void *priv, unsigned *i)
1329 {
1330         struct vivid_dev *dev = video_drvdata(file);
1331
1332         *i = dev->input;
1333         return 0;
1334 }
1335
1336 int vidioc_s_input(struct file *file, void *priv, unsigned i)
1337 {
1338         struct vivid_dev *dev = video_drvdata(file);
1339         struct v4l2_bt_timings *bt = &dev->dv_timings_cap.bt;
1340         unsigned brightness;
1341
1342         if (i >= dev->num_inputs)
1343                 return -EINVAL;
1344
1345         if (i == dev->input)
1346                 return 0;
1347
1348         if (vb2_is_busy(&dev->vb_vid_cap_q) || vb2_is_busy(&dev->vb_vbi_cap_q))
1349                 return -EBUSY;
1350
1351         dev->input = i;
1352         dev->vid_cap_dev.tvnorms = 0;
1353         if (dev->input_type[i] == TV || dev->input_type[i] == SVID) {
1354                 dev->tv_audio_input = (dev->input_type[i] == TV) ? 0 : 1;
1355                 dev->vid_cap_dev.tvnorms = V4L2_STD_ALL;
1356         }
1357         dev->vbi_cap_dev.tvnorms = dev->vid_cap_dev.tvnorms;
1358         vivid_update_format_cap(dev, false);
1359
1360         if (dev->colorspace) {
1361                 switch (dev->input_type[i]) {
1362                 case WEBCAM:
1363                         v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
1364                         break;
1365                 case TV:
1366                 case SVID:
1367                         v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
1368                         break;
1369                 case HDMI:
1370                         if (bt->flags & V4L2_DV_FL_IS_CE_VIDEO) {
1371                                 if (dev->src_rect.width == 720 && dev->src_rect.height <= 576)
1372                                         v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
1373                                 else
1374                                         v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_709);
1375                         } else {
1376                                 v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
1377                         }
1378                         break;
1379                 }
1380         }
1381
1382         /*
1383          * Modify the brightness range depending on the input.
1384          * This makes it easy to use vivid to test if applications can
1385          * handle control range modifications and is also how this is
1386          * typically used in practice as different inputs may be hooked
1387          * up to different receivers with different control ranges.
1388          */
1389         brightness = 128 * i + dev->input_brightness[i];
1390         v4l2_ctrl_modify_range(dev->brightness,
1391                         128 * i, 255 + 128 * i, 1, 128 + 128 * i);
1392         v4l2_ctrl_s_ctrl(dev->brightness, brightness);
1393         return 0;
1394 }
1395
1396 int vidioc_enumaudio(struct file *file, void *fh, struct v4l2_audio *vin)
1397 {
1398         if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1399                 return -EINVAL;
1400         *vin = vivid_audio_inputs[vin->index];
1401         return 0;
1402 }
1403
1404 int vidioc_g_audio(struct file *file, void *fh, struct v4l2_audio *vin)
1405 {
1406         struct vivid_dev *dev = video_drvdata(file);
1407
1408         if (!vivid_is_sdtv_cap(dev))
1409                 return -EINVAL;
1410         *vin = vivid_audio_inputs[dev->tv_audio_input];
1411         return 0;
1412 }
1413
1414 int vidioc_s_audio(struct file *file, void *fh, const struct v4l2_audio *vin)
1415 {
1416         struct vivid_dev *dev = video_drvdata(file);
1417
1418         if (!vivid_is_sdtv_cap(dev))
1419                 return -EINVAL;
1420         if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1421                 return -EINVAL;
1422         dev->tv_audio_input = vin->index;
1423         return 0;
1424 }
1425
1426 int vivid_video_g_frequency(struct file *file, void *fh, struct v4l2_frequency *vf)
1427 {
1428         struct vivid_dev *dev = video_drvdata(file);
1429
1430         if (vf->tuner != 0)
1431                 return -EINVAL;
1432         vf->frequency = dev->tv_freq;
1433         return 0;
1434 }
1435
1436 int vivid_video_s_frequency(struct file *file, void *fh, const struct v4l2_frequency *vf)
1437 {
1438         struct vivid_dev *dev = video_drvdata(file);
1439
1440         if (vf->tuner != 0)
1441                 return -EINVAL;
1442         dev->tv_freq = clamp_t(unsigned, vf->frequency, MIN_TV_FREQ, MAX_TV_FREQ);
1443         if (vivid_is_tv_cap(dev))
1444                 vivid_update_quality(dev);
1445         return 0;
1446 }
1447
1448 int vivid_video_s_tuner(struct file *file, void *fh, const struct v4l2_tuner *vt)
1449 {
1450         struct vivid_dev *dev = video_drvdata(file);
1451
1452         if (vt->index != 0)
1453                 return -EINVAL;
1454         if (vt->audmode > V4L2_TUNER_MODE_LANG1_LANG2)
1455                 return -EINVAL;
1456         dev->tv_audmode = vt->audmode;
1457         return 0;
1458 }
1459
1460 int vivid_video_g_tuner(struct file *file, void *fh, struct v4l2_tuner *vt)
1461 {
1462         struct vivid_dev *dev = video_drvdata(file);
1463         enum tpg_quality qual;
1464
1465         if (vt->index != 0)
1466                 return -EINVAL;
1467
1468         vt->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO |
1469                          V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
1470         vt->audmode = dev->tv_audmode;
1471         vt->rangelow = MIN_TV_FREQ;
1472         vt->rangehigh = MAX_TV_FREQ;
1473         qual = vivid_get_quality(dev, &vt->afc);
1474         if (qual == TPG_QUAL_COLOR)
1475                 vt->signal = 0xffff;
1476         else if (qual == TPG_QUAL_GRAY)
1477                 vt->signal = 0x8000;
1478         else
1479                 vt->signal = 0;
1480         if (qual == TPG_QUAL_NOISE) {
1481                 vt->rxsubchans = 0;
1482         } else if (qual == TPG_QUAL_GRAY) {
1483                 vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1484         } else {
1485                 unsigned channel_nr = dev->tv_freq / (6 * 16);
1486                 unsigned options = (dev->std_cap & V4L2_STD_NTSC_M) ? 4 : 3;
1487
1488                 switch (channel_nr % options) {
1489                 case 0:
1490                         vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1491                         break;
1492                 case 1:
1493                         vt->rxsubchans = V4L2_TUNER_SUB_STEREO;
1494                         break;
1495                 case 2:
1496                         if (dev->std_cap & V4L2_STD_NTSC_M)
1497                                 vt->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_SAP;
1498                         else
1499                                 vt->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1500                         break;
1501                 case 3:
1502                         vt->rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_SAP;
1503                         break;
1504                 }
1505         }
1506         strlcpy(vt->name, "TV Tuner", sizeof(vt->name));
1507         return 0;
1508 }
1509
1510 /* Must remain in sync with the vivid_ctrl_standard_strings array */
1511 const v4l2_std_id vivid_standard[] = {
1512         V4L2_STD_NTSC_M,
1513         V4L2_STD_NTSC_M_JP,
1514         V4L2_STD_NTSC_M_KR,
1515         V4L2_STD_NTSC_443,
1516         V4L2_STD_PAL_BG | V4L2_STD_PAL_H,
1517         V4L2_STD_PAL_I,
1518         V4L2_STD_PAL_DK,
1519         V4L2_STD_PAL_M,
1520         V4L2_STD_PAL_N,
1521         V4L2_STD_PAL_Nc,
1522         V4L2_STD_PAL_60,
1523         V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H,
1524         V4L2_STD_SECAM_DK,
1525         V4L2_STD_SECAM_L,
1526         V4L2_STD_SECAM_LC,
1527         V4L2_STD_UNKNOWN
1528 };
1529
1530 /* Must remain in sync with the vivid_standard array */
1531 const char * const vivid_ctrl_standard_strings[] = {
1532         "NTSC-M",
1533         "NTSC-M-JP",
1534         "NTSC-M-KR",
1535         "NTSC-443",
1536         "PAL-BGH",
1537         "PAL-I",
1538         "PAL-DK",
1539         "PAL-M",
1540         "PAL-N",
1541         "PAL-Nc",
1542         "PAL-60",
1543         "SECAM-BGH",
1544         "SECAM-DK",
1545         "SECAM-L",
1546         "SECAM-Lc",
1547         NULL,
1548 };
1549
1550 int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *id)
1551 {
1552         struct vivid_dev *dev = video_drvdata(file);
1553
1554         if (!vivid_is_sdtv_cap(dev))
1555                 return -ENODATA;
1556         if (dev->std_signal_mode == NO_SIGNAL ||
1557             dev->std_signal_mode == NO_LOCK) {
1558                 *id = V4L2_STD_UNKNOWN;
1559                 return 0;
1560         }
1561         if (vivid_is_tv_cap(dev) && tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE) {
1562                 *id = V4L2_STD_UNKNOWN;
1563         } else if (dev->std_signal_mode == CURRENT_STD) {
1564                 *id = dev->std_cap;
1565         } else if (dev->std_signal_mode == SELECTED_STD) {
1566                 *id = dev->query_std;
1567         } else {
1568                 *id = vivid_standard[dev->query_std_last];
1569                 dev->query_std_last = (dev->query_std_last + 1) % ARRAY_SIZE(vivid_standard);
1570         }
1571
1572         return 0;
1573 }
1574
1575 int vivid_vid_cap_s_std(struct file *file, void *priv, v4l2_std_id id)
1576 {
1577         struct vivid_dev *dev = video_drvdata(file);
1578
1579         if (!vivid_is_sdtv_cap(dev))
1580                 return -ENODATA;
1581         if (dev->std_cap == id)
1582                 return 0;
1583         if (vb2_is_busy(&dev->vb_vid_cap_q) || vb2_is_busy(&dev->vb_vbi_cap_q))
1584                 return -EBUSY;
1585         dev->std_cap = id;
1586         vivid_update_format_cap(dev, false);
1587         return 0;
1588 }
1589
1590 static void find_aspect_ratio(u32 width, u32 height,
1591                                u32 *num, u32 *denom)
1592 {
1593         if (!(height % 3) && ((height * 4 / 3) == width)) {
1594                 *num = 4;
1595                 *denom = 3;
1596         } else if (!(height % 9) && ((height * 16 / 9) == width)) {
1597                 *num = 16;
1598                 *denom = 9;
1599         } else if (!(height % 10) && ((height * 16 / 10) == width)) {
1600                 *num = 16;
1601                 *denom = 10;
1602         } else if (!(height % 4) && ((height * 5 / 4) == width)) {
1603                 *num = 5;
1604                 *denom = 4;
1605         } else if (!(height % 9) && ((height * 15 / 9) == width)) {
1606                 *num = 15;
1607                 *denom = 9;
1608         } else { /* default to 16:9 */
1609                 *num = 16;
1610                 *denom = 9;
1611         }
1612 }
1613
1614 static bool valid_cvt_gtf_timings(struct v4l2_dv_timings *timings)
1615 {
1616         struct v4l2_bt_timings *bt = &timings->bt;
1617         u32 total_h_pixel;
1618         u32 total_v_lines;
1619         u32 h_freq;
1620
1621         if (!v4l2_valid_dv_timings(timings, &vivid_dv_timings_cap,
1622                                 NULL, NULL))
1623                 return false;
1624
1625         total_h_pixel = V4L2_DV_BT_FRAME_WIDTH(bt);
1626         total_v_lines = V4L2_DV_BT_FRAME_HEIGHT(bt);
1627
1628         h_freq = (u32)bt->pixelclock / total_h_pixel;
1629
1630         if (bt->standards == 0 || (bt->standards & V4L2_DV_BT_STD_CVT)) {
1631                 if (v4l2_detect_cvt(total_v_lines, h_freq, bt->vsync, bt->width,
1632                                     bt->polarities, bt->interlaced, timings))
1633                         return true;
1634         }
1635
1636         if (bt->standards == 0 || (bt->standards & V4L2_DV_BT_STD_GTF)) {
1637                 struct v4l2_fract aspect_ratio;
1638
1639                 find_aspect_ratio(bt->width, bt->height,
1640                                   &aspect_ratio.numerator,
1641                                   &aspect_ratio.denominator);
1642                 if (v4l2_detect_gtf(total_v_lines, h_freq, bt->vsync,
1643                                     bt->polarities, bt->interlaced,
1644                                     aspect_ratio, timings))
1645                         return true;
1646         }
1647         return false;
1648 }
1649
1650 int vivid_vid_cap_s_dv_timings(struct file *file, void *_fh,
1651                                     struct v4l2_dv_timings *timings)
1652 {
1653         struct vivid_dev *dev = video_drvdata(file);
1654
1655         if (!vivid_is_hdmi_cap(dev))
1656                 return -ENODATA;
1657         if (!v4l2_find_dv_timings_cap(timings, &vivid_dv_timings_cap,
1658                                       0, NULL, NULL) &&
1659             !valid_cvt_gtf_timings(timings))
1660                 return -EINVAL;
1661
1662         if (v4l2_match_dv_timings(timings, &dev->dv_timings_cap, 0, false))
1663                 return 0;
1664         if (vb2_is_busy(&dev->vb_vid_cap_q))
1665                 return -EBUSY;
1666
1667         dev->dv_timings_cap = *timings;
1668         vivid_update_format_cap(dev, false);
1669         return 0;
1670 }
1671
1672 int vidioc_query_dv_timings(struct file *file, void *_fh,
1673                                     struct v4l2_dv_timings *timings)
1674 {
1675         struct vivid_dev *dev = video_drvdata(file);
1676
1677         if (!vivid_is_hdmi_cap(dev))
1678                 return -ENODATA;
1679         if (dev->dv_timings_signal_mode == NO_SIGNAL ||
1680             dev->edid_blocks == 0)
1681                 return -ENOLINK;
1682         if (dev->dv_timings_signal_mode == NO_LOCK)
1683                 return -ENOLCK;
1684         if (dev->dv_timings_signal_mode == OUT_OF_RANGE) {
1685                 timings->bt.pixelclock = vivid_dv_timings_cap.bt.max_pixelclock * 2;
1686                 return -ERANGE;
1687         }
1688         if (dev->dv_timings_signal_mode == CURRENT_DV_TIMINGS) {
1689                 *timings = dev->dv_timings_cap;
1690         } else if (dev->dv_timings_signal_mode == SELECTED_DV_TIMINGS) {
1691                 *timings = v4l2_dv_timings_presets[dev->query_dv_timings];
1692         } else {
1693                 *timings = v4l2_dv_timings_presets[dev->query_dv_timings_last];
1694                 dev->query_dv_timings_last = (dev->query_dv_timings_last + 1) %
1695                                                 dev->query_dv_timings_size;
1696         }
1697         return 0;
1698 }
1699
1700 int vidioc_s_edid(struct file *file, void *_fh,
1701                          struct v4l2_edid *edid)
1702 {
1703         struct vivid_dev *dev = video_drvdata(file);
1704
1705         memset(edid->reserved, 0, sizeof(edid->reserved));
1706         if (edid->pad >= dev->num_inputs)
1707                 return -EINVAL;
1708         if (dev->input_type[edid->pad] != HDMI || edid->start_block)
1709                 return -EINVAL;
1710         if (edid->blocks == 0) {
1711                 dev->edid_blocks = 0;
1712                 return 0;
1713         }
1714         if (edid->blocks > dev->edid_max_blocks) {
1715                 edid->blocks = dev->edid_max_blocks;
1716                 return -E2BIG;
1717         }
1718         dev->edid_blocks = edid->blocks;
1719         memcpy(dev->edid, edid->edid, edid->blocks * 128);
1720         return 0;
1721 }
1722
1723 int vidioc_enum_framesizes(struct file *file, void *fh,
1724                                          struct v4l2_frmsizeenum *fsize)
1725 {
1726         struct vivid_dev *dev = video_drvdata(file);
1727
1728         if (!vivid_is_webcam(dev) && !dev->has_scaler_cap)
1729                 return -EINVAL;
1730         if (vivid_get_format(dev, fsize->pixel_format) == NULL)
1731                 return -EINVAL;
1732         if (vivid_is_webcam(dev)) {
1733                 if (fsize->index >= ARRAY_SIZE(webcam_sizes))
1734                         return -EINVAL;
1735                 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1736                 fsize->discrete = webcam_sizes[fsize->index];
1737                 return 0;
1738         }
1739         if (fsize->index)
1740                 return -EINVAL;
1741         fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
1742         fsize->stepwise.min_width = MIN_WIDTH;
1743         fsize->stepwise.max_width = MAX_WIDTH * MAX_ZOOM;
1744         fsize->stepwise.step_width = 2;
1745         fsize->stepwise.min_height = MIN_HEIGHT;
1746         fsize->stepwise.max_height = MAX_HEIGHT * MAX_ZOOM;
1747         fsize->stepwise.step_height = 2;
1748         return 0;
1749 }
1750
1751 /* timeperframe is arbitrary and continuous */
1752 int vidioc_enum_frameintervals(struct file *file, void *priv,
1753                                              struct v4l2_frmivalenum *fival)
1754 {
1755         struct vivid_dev *dev = video_drvdata(file);
1756         const struct vivid_fmt *fmt;
1757         int i;
1758
1759         fmt = vivid_get_format(dev, fival->pixel_format);
1760         if (!fmt)
1761                 return -EINVAL;
1762
1763         if (!vivid_is_webcam(dev)) {
1764                 if (fival->index)
1765                         return -EINVAL;
1766                 if (fival->width < MIN_WIDTH || fival->width > MAX_WIDTH * MAX_ZOOM)
1767                         return -EINVAL;
1768                 if (fival->height < MIN_HEIGHT || fival->height > MAX_HEIGHT * MAX_ZOOM)
1769                         return -EINVAL;
1770                 fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1771                 fival->discrete = dev->timeperframe_vid_cap;
1772                 return 0;
1773         }
1774
1775         for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
1776                 if (fival->width == webcam_sizes[i].width &&
1777                     fival->height == webcam_sizes[i].height)
1778                         break;
1779         if (i == ARRAY_SIZE(webcam_sizes))
1780                 return -EINVAL;
1781         if (fival->index >= 2 * (VIVID_WEBCAM_SIZES - i))
1782                 return -EINVAL;
1783         fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1784         fival->discrete = webcam_intervals[fival->index];
1785         return 0;
1786 }
1787
1788 int vivid_vid_cap_g_parm(struct file *file, void *priv,
1789                           struct v4l2_streamparm *parm)
1790 {
1791         struct vivid_dev *dev = video_drvdata(file);
1792
1793         if (parm->type != (dev->multiplanar ?
1794                            V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1795                            V4L2_BUF_TYPE_VIDEO_CAPTURE))
1796                 return -EINVAL;
1797
1798         parm->parm.capture.capability   = V4L2_CAP_TIMEPERFRAME;
1799         parm->parm.capture.timeperframe = dev->timeperframe_vid_cap;
1800         parm->parm.capture.readbuffers  = 1;
1801         return 0;
1802 }
1803
1804 #define FRACT_CMP(a, OP, b)     \
1805         ((u64)(a).numerator * (b).denominator  OP  (u64)(b).numerator * (a).denominator)
1806
1807 int vivid_vid_cap_s_parm(struct file *file, void *priv,
1808                           struct v4l2_streamparm *parm)
1809 {
1810         struct vivid_dev *dev = video_drvdata(file);
1811         unsigned ival_sz = 2 * (VIVID_WEBCAM_SIZES - dev->webcam_size_idx);
1812         struct v4l2_fract tpf;
1813         unsigned i;
1814
1815         if (parm->type != (dev->multiplanar ?
1816                            V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1817                            V4L2_BUF_TYPE_VIDEO_CAPTURE))
1818                 return -EINVAL;
1819         if (!vivid_is_webcam(dev))
1820                 return vivid_vid_cap_g_parm(file, priv, parm);
1821
1822         tpf = parm->parm.capture.timeperframe;
1823
1824         if (tpf.denominator == 0)
1825                 tpf = webcam_intervals[ival_sz - 1];
1826         for (i = 0; i < ival_sz; i++)
1827                 if (FRACT_CMP(tpf, >=, webcam_intervals[i]))
1828                         break;
1829         if (i == ival_sz)
1830                 i = ival_sz - 1;
1831         dev->webcam_ival_idx = i;
1832         tpf = webcam_intervals[dev->webcam_ival_idx];
1833         tpf = FRACT_CMP(tpf, <, tpf_min) ? tpf_min : tpf;
1834         tpf = FRACT_CMP(tpf, >, tpf_max) ? tpf_max : tpf;
1835
1836         /* resync the thread's timings */
1837         dev->cap_seq_resync = true;
1838         dev->timeperframe_vid_cap = tpf;
1839         parm->parm.capture.timeperframe = tpf;
1840         parm->parm.capture.readbuffers  = 1;
1841         return 0;
1842 }