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
  30 #include "vivid-core.h"
  31 #include "vivid-vid-common.h"
  32 #include "vivid-kthread-cap.h"
  33 #include "vivid-vid-cap.h"
  34
  35 /* timeperframe: min/max and default */
  36 static const struct v4l2_fract
  37         tpf_min     = {.numerator = 1,          .denominator = FPS_MAX},
  38         tpf_max     = {.numerator = FPS_MAX,    .denominator = 1},
  39         tpf_default = {.numerator = 1,          .denominator = 30};
  40
  41 static const struct vivid_fmt formats_ovl[] = {
  42         {
  43                 .name     = "RGB565 (LE)",
  44                 .fourcc   = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
  45                 .depth    = 16,
  46                 .planes   = 1,
  47         },
  48         {
  49                 .name     = "XRGB555 (LE)",
  50                 .fourcc   = V4L2_PIX_FMT_XRGB555, /* gggbbbbb arrrrrgg */
  51                 .depth    = 16,
  52                 .planes   = 1,
  53         },
  54         {
  55                 .name     = "ARGB555 (LE)",
  56                 .fourcc   = V4L2_PIX_FMT_ARGB555, /* gggbbbbb arrrrrgg */
  57                 .depth    = 16,
  58                 .planes   = 1,
  59         },
  60 };
  61
  62 /* The number of discrete webcam framesizes */
  63 #define VIVID_WEBCAM_SIZES 3
  64 /* The number of discrete webcam frameintervals */
  65 #define VIVID_WEBCAM_IVALS (VIVID_WEBCAM_SIZES * 2)
  66
  67 /* Sizes must be in increasing order */
  68 static const struct v4l2_frmsize_discrete webcam_sizes[VIVID_WEBCAM_SIZES] = {
  69         {  320, 180 },
  70         {  640, 360 },
  71         { 1280, 720 },
  72 };
  73
  74 /*
  75  * Intervals must be in increasing order and there must be twice as many
  76  * elements in this array as there are in webcam_sizes.
  77  */
  78 static const struct v4l2_fract webcam_intervals[VIVID_WEBCAM_IVALS] = {
  79         {  1, 10 },
  80         {  1, 15 },
  81         {  1, 25 },
  82         {  1, 30 },
  83         {  1, 50 },
  84         {  1, 60 },
  85 };
  86
  87 static const struct v4l2_discrete_probe webcam_probe = {
  88         webcam_sizes,
  89         VIVID_WEBCAM_SIZES
  90 };
  91
  92 static int vid_cap_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
  93                        unsigned *nbuffers, unsigned *nplanes,
  94                        unsigned sizes[], void *alloc_ctxs[])
  95 {
  96         struct vivid_dev *dev = vb2_get_drv_priv(vq);
  97         unsigned planes = tpg_g_planes(&dev->tpg);
  98         unsigned h = dev->fmt_cap_rect.height;
  99         unsigned p;
 100
 101         if (dev->field_cap == V4L2_FIELD_ALTERNATE) {
 102                 /*
 103                  * You cannot use read() with FIELD_ALTERNATE since the field
 104                  * information (TOP/BOTTOM) cannot be passed back to the user.
 105                  */
 106                 if (vb2_fileio_is_active(vq))
 107                         return -EINVAL;
 108         }
 109
 110         if (dev->queue_setup_error) {
 111                 /*
 112                  * Error injection: test what happens if queue_setup() returns
 113                  * an error.
 114                  */
 115                 dev->queue_setup_error = false;
 116                 return -EINVAL;
 117         }
 118         if (fmt) {
 119                 const struct v4l2_pix_format_mplane *mp;
 120                 struct v4l2_format mp_fmt;
 121                 const struct vivid_fmt *vfmt;
 122
 123                 if (!V4L2_TYPE_IS_MULTIPLANAR(fmt->type)) {
 124                         fmt_sp2mp(fmt, &mp_fmt);
 125                         fmt = &mp_fmt;
 126                 }
 127                 mp = &fmt->fmt.pix_mp;
 128                 /*
 129                  * Check if the number of planes in the specified format match
 130                  * the number of planes in the current format. You can't mix that.
 131                  */
 132                 if (mp->num_planes != planes)
 133                         return -EINVAL;
 134                 vfmt = vivid_get_format(dev, mp->pixelformat);
 135                 for (p = 0; p < planes; p++) {
 136                         sizes[p] = mp->plane_fmt[p].sizeimage;
 137                         if (sizes[0] < tpg_g_bytesperline(&dev->tpg, 0) * h +
 138                                                         vfmt->data_offset[p])
 139                                 return -EINVAL;
 140                 }
 141         } else {
 142                 for (p = 0; p < planes; p++)
 143                         sizes[p] = tpg_g_bytesperline(&dev->tpg, p) * h +
 144                                         dev->fmt_cap->data_offset[p];
 145         }
 146
 147         if (vq->num_buffers + *nbuffers < 2)
 148                 *nbuffers = 2 - vq->num_buffers;
 149
 150         *nplanes = planes;
 151
 152         /*
 153          * videobuf2-vmalloc allocator is context-less so no need to set
 154          * alloc_ctxs array.
 155          */
 156
 157         if (planes == 2)
 158                 dprintk(dev, 1, "%s, count=%d, sizes=%u, %u\n", __func__,
 159                         *nbuffers, sizes[0], sizes[1]);
 160         else
 161                 dprintk(dev, 1, "%s, count=%d, size=%u\n", __func__,
 162                         *nbuffers, sizes[0]);
 163
 164         return 0;
 165 }
 166
 167 static int vid_cap_buf_prepare(struct vb2_buffer *vb)
 168 {
 169         struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
 170         unsigned long size;
 171         unsigned planes = tpg_g_planes(&dev->tpg);
 172         unsigned p;
 173
 174         dprintk(dev, 1, "%s\n", __func__);
 175
 176         if (WARN_ON(NULL == dev->fmt_cap))
 177                 return -EINVAL;
 178
 179         if (dev->buf_prepare_error) {
 180                 /*
 181                  * Error injection: test what happens if buf_prepare() returns
 182                  * an error.
 183                  */
 184                 dev->buf_prepare_error = false;
 185                 return -EINVAL;
 186         }
 187         for (p = 0; p < planes; p++) {
 188                 size = tpg_g_bytesperline(&dev->tpg, p) * dev->fmt_cap_rect.height +
 189                         dev->fmt_cap->data_offset[p];
 190
 191                 if (vb2_plane_size(vb, 0) < size) {
 192                         dprintk(dev, 1, "%s data will not fit into plane %u (%lu < %lu)\n",
 193                                         __func__, p, vb2_plane_size(vb, 0), size);
 194                         return -EINVAL;
 195                 }
 196
 197                 vb2_set_plane_payload(vb, p, size);
 198                 vb->v4l2_planes[p].data_offset = dev->fmt_cap->data_offset[p];
 199         }
 200
 201         return 0;
 202 }
 203
 204 static void vid_cap_buf_finish(struct vb2_buffer *vb)
 205 {
 206         struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
 207         struct v4l2_timecode *tc = &vb->v4l2_buf.timecode;
 208         unsigned fps = 25;
 209         unsigned seq = vb->v4l2_buf.sequence;
 210
 211         if (!vivid_is_sdtv_cap(dev))
 212                 return;
 213
 214         /*
 215          * Set the timecode. Rarely used, so it is interesting to
 216          * test this.
 217          */
 218         vb->v4l2_buf.flags |= V4L2_BUF_FLAG_TIMECODE;
 219         if (dev->std_cap & V4L2_STD_525_60)
 220                 fps = 30;
 221         tc->type = (fps == 30) ? V4L2_TC_TYPE_30FPS : V4L2_TC_TYPE_25FPS;
 222         tc->flags = 0;
 223         tc->frames = seq % fps;
 224         tc->seconds = (seq / fps) % 60;
 225         tc->minutes = (seq / (60 * fps)) % 60;
 226         tc->hours = (seq / (60 * 60 * fps)) % 24;
 227 }
 228
 229 static void vid_cap_buf_queue(struct vb2_buffer *vb)
 230 {
 231         struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
 232         struct vivid_buffer *buf = container_of(vb, struct vivid_buffer, vb);
 233
 234         dprintk(dev, 1, "%s\n", __func__);
 235
 236         spin_lock(&dev->slock);
 237         list_add_tail(&buf->list, &dev->vid_cap_active);
 238         spin_unlock(&dev->slock);
 239 }
 240
 241 static int vid_cap_start_streaming(struct vb2_queue *vq, unsigned count)
 242 {
 243         struct vivid_dev *dev = vb2_get_drv_priv(vq);
 244         unsigned i;
 245         int err;
 246
 247         if (vb2_is_streaming(&dev->vb_vid_out_q))
 248                 dev->can_loop_video = vivid_vid_can_loop(dev);
 249
 250         if (dev->kthread_vid_cap)
 251                 return 0;
 252
 253         dev->vid_cap_seq_count = 0;
 254         dprintk(dev, 1, "%s\n", __func__);
 255         for (i = 0; i < VIDEO_MAX_FRAME; i++)
 256                 dev->must_blank[i] = tpg_g_perc_fill(&dev->tpg) < 100;
 257         if (dev->start_streaming_error) {
 258                 dev->start_streaming_error = false;
 259                 err = -EINVAL;
 260         } else {
 261                 err = vivid_start_generating_vid_cap(dev, &dev->vid_cap_streaming);
 262         }
 263         if (err) {
 264                 struct vivid_buffer *buf, *tmp;
 265
 266                 list_for_each_entry_safe(buf, tmp, &dev->vid_cap_active, list) {
 267                         list_del(&buf->list);
 268                         vb2_buffer_done(&buf->vb, VB2_BUF_STATE_QUEUED);
 269                 }
 270         }
 271         return err;
 272 }
 273
 274 /* abort streaming and wait for last buffer */
 275 static void vid_cap_stop_streaming(struct vb2_queue *vq)
 276 {
 277         struct vivid_dev *dev = vb2_get_drv_priv(vq);
 278
 279         dprintk(dev, 1, "%s\n", __func__);
 280         vivid_stop_generating_vid_cap(dev, &dev->vid_cap_streaming);
 281         dev->can_loop_video = false;
 282 }
 283
 284 const struct vb2_ops vivid_vid_cap_qops = {
 285         .queue_setup            = vid_cap_queue_setup,
 286         .buf_prepare            = vid_cap_buf_prepare,
 287         .buf_finish             = vid_cap_buf_finish,
 288         .buf_queue              = vid_cap_buf_queue,
 289         .start_streaming        = vid_cap_start_streaming,
 290         .stop_streaming         = vid_cap_stop_streaming,
 291         .wait_prepare           = vivid_unlock,
 292         .wait_finish            = vivid_lock,
 293 };
 294
 295 /*
 296  * Determine the 'picture' quality based on the current TV frequency: either
 297  * COLOR for a good 'signal', GRAY (grayscale picture) for a slightly off
 298  * signal or NOISE for no signal.
 299  */
 300 void vivid_update_quality(struct vivid_dev *dev)
 301 {
 302         unsigned freq_modulus;
 303
 304         if (dev->loop_video && (vivid_is_svid_cap(dev) || vivid_is_hdmi_cap(dev))) {
 305                 /*
 306                  * The 'noise' will only be replaced by the actual video
 307                  * if the output video matches the input video settings.
 308                  */
 309                 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
 310                 return;
 311         }
 312         if (vivid_is_hdmi_cap(dev) && VIVID_INVALID_SIGNAL(dev->dv_timings_signal_mode)) {
 313                 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
 314                 return;
 315         }
 316         if (vivid_is_sdtv_cap(dev) && VIVID_INVALID_SIGNAL(dev->std_signal_mode)) {
 317                 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
 318                 return;
 319         }
 320         if (!vivid_is_tv_cap(dev)) {
 321                 tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
 322                 return;
 323         }
 324
 325         /*
 326          * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
 327          * From +/- 0.25 MHz around the channel there is color, and from
 328          * +/- 1 MHz there is grayscale (chroma is lost).
 329          * Everywhere else it is just noise.
 330          */
 331         freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
 332         if (freq_modulus > 2 * 16) {
 333                 tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE,
 334                         next_pseudo_random32(dev->tv_freq ^ 0x55) & 0x3f);
 335                 return;
 336         }
 337         if (freq_modulus < 12 /*0.75 * 16*/ || freq_modulus > 20 /*1.25 * 16*/)
 338                 tpg_s_quality(&dev->tpg, TPG_QUAL_GRAY, 0);
 339         else
 340                 tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
 341 }
 342
 343 /*
 344  * Get the current picture quality and the associated afc value.
 345  */
 346 static enum tpg_quality vivid_get_quality(struct vivid_dev *dev, s32 *afc)
 347 {
 348         unsigned freq_modulus;
 349
 350         if (afc)
 351                 *afc = 0;
 352         if (tpg_g_quality(&dev->tpg) == TPG_QUAL_COLOR ||
 353             tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE)
 354                 return tpg_g_quality(&dev->tpg);
 355
 356         /*
 357          * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
 358          * From +/- 0.25 MHz around the channel there is color, and from
 359          * +/- 1 MHz there is grayscale (chroma is lost).
 360          * Everywhere else it is just gray.
 361          */
 362         freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
 363         if (afc)
 364                 *afc = freq_modulus - 1 * 16;
 365         return TPG_QUAL_GRAY;
 366 }
 367
 368 enum tpg_video_aspect vivid_get_video_aspect(const struct vivid_dev *dev)
 369 {
 370         if (vivid_is_sdtv_cap(dev))
 371                 return dev->std_aspect_ratio;
 372
 373         if (vivid_is_hdmi_cap(dev))
 374                 return dev->dv_timings_aspect_ratio;
 375
 376         return TPG_VIDEO_ASPECT_IMAGE;
 377 }
 378
 379 static enum tpg_pixel_aspect vivid_get_pixel_aspect(const struct vivid_dev *dev)
 380 {
 381         if (vivid_is_sdtv_cap(dev))
 382                 return (dev->std_cap & V4L2_STD_525_60) ?
 383                         TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
 384
 385         if (vivid_is_hdmi_cap(dev) &&
 386             dev->src_rect.width == 720 && dev->src_rect.height <= 576)
 387                 return dev->src_rect.height == 480 ?
 388                         TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
 389
 390         return TPG_PIXEL_ASPECT_SQUARE;
 391 }
 392
 393 /*
 394  * Called whenever the format has to be reset which can occur when
 395  * changing inputs, standard, timings, etc.
 396  */
 397 void vivid_update_format_cap(struct vivid_dev *dev, bool keep_controls)
 398 {
 399         struct v4l2_bt_timings *bt = &dev->dv_timings_cap.bt;
 400         unsigned size;
 401
 402         switch (dev->input_type[dev->input]) {
 403         case WEBCAM:
 404         default:
 405                 dev->src_rect.width = webcam_sizes[dev->webcam_size_idx].width;
 406                 dev->src_rect.height = webcam_sizes[dev->webcam_size_idx].height;
 407                 dev->timeperframe_vid_cap = webcam_intervals[dev->webcam_ival_idx];
 408                 dev->field_cap = V4L2_FIELD_NONE;
 409                 tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
 410                 break;
 411         case TV:
 412         case SVID:
 413                 dev->field_cap = dev->tv_field_cap;
 414                 dev->src_rect.width = 720;
 415                 if (dev->std_cap & V4L2_STD_525_60) {
 416                         dev->src_rect.height = 480;
 417                         dev->timeperframe_vid_cap = (struct v4l2_fract) { 1001, 30000 };
 418                         dev->service_set_cap = V4L2_SLICED_CAPTION_525;
 419                 } else {
 420                         dev->src_rect.height = 576;
 421                         dev->timeperframe_vid_cap = (struct v4l2_fract) { 1000, 25000 };
 422                         dev->service_set_cap = V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
 423                 }
 424                 tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
 425                 break;
 426         case HDMI:
 427                 dev->src_rect.width = bt->width;
 428                 dev->src_rect.height = bt->height;
 429                 size = V4L2_DV_BT_FRAME_WIDTH(bt) * V4L2_DV_BT_FRAME_HEIGHT(bt);
 430                 dev->timeperframe_vid_cap = (struct v4l2_fract) {
 431                         size / 100, (u32)bt->pixelclock / 100
 432                 };
 433                 if (bt->interlaced)
 434                         dev->field_cap = V4L2_FIELD_ALTERNATE;
 435                 else
 436                         dev->field_cap = V4L2_FIELD_NONE;
 437
 438                 /*
 439                  * We can be called from within s_ctrl, in that case we can't
 440                  * set/get controls. Luckily we don't need to in that case.
 441                  */
 442                 if (keep_controls || !dev->colorspace)
 443                         break;
 444                 if (bt->standards & V4L2_DV_BT_STD_CEA861) {
 445                         if (bt->width == 720 && bt->height <= 576)
 446                                 v4l2_ctrl_s_ctrl(dev->colorspace, V4L2_COLORSPACE_SMPTE170M);
 447                         else
 448                                 v4l2_ctrl_s_ctrl(dev->colorspace, V4L2_COLORSPACE_REC709);
 449                         v4l2_ctrl_s_ctrl(dev->real_rgb_range_cap, 1);
 450                 } else {
 451                         v4l2_ctrl_s_ctrl(dev->colorspace, V4L2_COLORSPACE_SRGB);
 452                         v4l2_ctrl_s_ctrl(dev->real_rgb_range_cap, 0);
 453                 }
 454                 tpg_s_rgb_range(&dev->tpg, v4l2_ctrl_g_ctrl(dev->rgb_range_cap));
 455                 break;
 456         }
 457         vivid_update_quality(dev);
 458         tpg_reset_source(&dev->tpg, dev->src_rect.width, dev->src_rect.height, dev->field_cap);
 459         dev->crop_cap = dev->src_rect;
 460         dev->crop_bounds_cap = dev->src_rect;
 461         dev->compose_cap = dev->crop_cap;
 462         if (V4L2_FIELD_HAS_T_OR_B(dev->field_cap))
 463                 dev->compose_cap.height /= 2;
 464         dev->fmt_cap_rect = dev->compose_cap;
 465         tpg_s_video_aspect(&dev->tpg, vivid_get_video_aspect(dev));
 466         tpg_s_pixel_aspect(&dev->tpg, vivid_get_pixel_aspect(dev));
 467         tpg_update_mv_step(&dev->tpg);
 468 }
 469
 470 /* Map the field to something that is valid for the current input */
 471 static enum v4l2_field vivid_field_cap(struct vivid_dev *dev, enum v4l2_field field)
 472 {
 473         if (vivid_is_sdtv_cap(dev)) {
 474                 switch (field) {
 475                 case V4L2_FIELD_INTERLACED_TB:
 476                 case V4L2_FIELD_INTERLACED_BT:
 477                 case V4L2_FIELD_SEQ_TB:
 478                 case V4L2_FIELD_SEQ_BT:
 479                 case V4L2_FIELD_TOP:
 480                 case V4L2_FIELD_BOTTOM:
 481                 case V4L2_FIELD_ALTERNATE:
 482                         return field;
 483                 case V4L2_FIELD_INTERLACED:
 484                 default:
 485                         return V4L2_FIELD_INTERLACED;
 486                 }
 487         }
 488         if (vivid_is_hdmi_cap(dev))
 489                 return dev->dv_timings_cap.bt.interlaced ? V4L2_FIELD_ALTERNATE :
 490                                                        V4L2_FIELD_NONE;
 491         return V4L2_FIELD_NONE;
 492 }
 493
 494 static unsigned vivid_colorspace_cap(struct vivid_dev *dev)
 495 {
 496         if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
 497                 return tpg_g_colorspace(&dev->tpg);
 498         return dev->colorspace_out;
 499 }
 500
 501 int vivid_g_fmt_vid_cap(struct file *file, void *priv,
 502                                         struct v4l2_format *f)
 503 {
 504         struct vivid_dev *dev = video_drvdata(file);
 505         struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
 506         unsigned p;
 507
 508         mp->width        = dev->fmt_cap_rect.width;
 509         mp->height       = dev->fmt_cap_rect.height;
 510         mp->field        = dev->field_cap;
 511         mp->pixelformat  = dev->fmt_cap->fourcc;
 512         mp->colorspace   = vivid_colorspace_cap(dev);
 513         mp->num_planes = dev->fmt_cap->planes;
 514         for (p = 0; p < mp->num_planes; p++) {
 515                 mp->plane_fmt[p].bytesperline = tpg_g_bytesperline(&dev->tpg, p);
 516                 mp->plane_fmt[p].sizeimage =
 517                         mp->plane_fmt[p].bytesperline * mp->height +
 518                         dev->fmt_cap->data_offset[p];
 519         }
 520         return 0;
 521 }
 522
 523 int vivid_try_fmt_vid_cap(struct file *file, void *priv,
 524                         struct v4l2_format *f)
 525 {
 526         struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
 527         struct v4l2_plane_pix_format *pfmt = mp->plane_fmt;
 528         struct vivid_dev *dev = video_drvdata(file);
 529         const struct vivid_fmt *fmt;
 530         unsigned bytesperline, max_bpl;
 531         unsigned factor = 1;
 532         unsigned w, h;
 533         unsigned p;
 534
 535         fmt = vivid_get_format(dev, mp->pixelformat);
 536         if (!fmt) {
 537                 dprintk(dev, 1, "Fourcc format (0x%08x) unknown.\n",
 538                         mp->pixelformat);
 539                 mp->pixelformat = V4L2_PIX_FMT_YUYV;
 540                 fmt = vivid_get_format(dev, mp->pixelformat);
 541         }
 542
 543         mp->field = vivid_field_cap(dev, mp->field);
 544         if (vivid_is_webcam(dev)) {
 545                 const struct v4l2_frmsize_discrete *sz =
 546                         v4l2_find_nearest_format(&webcam_probe, mp->width, mp->height);
 547
 548                 w = sz->width;
 549                 h = sz->height;
 550         } else if (vivid_is_sdtv_cap(dev)) {
 551                 w = 720;
 552                 h = (dev->std_cap & V4L2_STD_525_60) ? 480 : 576;
 553         } else {
 554                 w = dev->src_rect.width;
 555                 h = dev->src_rect.height;
 556         }
 557         if (V4L2_FIELD_HAS_T_OR_B(mp->field))
 558                 factor = 2;
 559         if (vivid_is_webcam(dev) ||
 560             (!dev->has_scaler_cap && !dev->has_crop_cap && !dev->has_compose_cap)) {
 561                 mp->width = w;
 562                 mp->height = h / factor;
 563         } else {
 564                 struct v4l2_rect r = { 0, 0, mp->width, mp->height * factor };
 565
 566                 rect_set_min_size(&r, &vivid_min_rect);
 567                 rect_set_max_size(&r, &vivid_max_rect);
 568                 if (dev->has_scaler_cap && !dev->has_compose_cap) {
 569                         struct v4l2_rect max_r = { 0, 0, MAX_ZOOM * w, MAX_ZOOM * h };
 570
 571                         rect_set_max_size(&r, &max_r);
 572                 } else if (!dev->has_scaler_cap && dev->has_crop_cap && !dev->has_compose_cap) {
 573                         rect_set_max_size(&r, &dev->src_rect);
 574                 } else if (!dev->has_scaler_cap && !dev->has_crop_cap) {
 575                         rect_set_min_size(&r, &dev->src_rect);
 576                 }
 577                 mp->width = r.width;
 578                 mp->height = r.height / factor;
 579         }
 580
 581         /* This driver supports custom bytesperline values */
 582
 583         /* Calculate the minimum supported bytesperline value */
 584         bytesperline = (mp->width * fmt->depth) >> 3;
 585         /* Calculate the maximum supported bytesperline value */
 586         max_bpl = (MAX_ZOOM * MAX_WIDTH * fmt->depth) >> 3;
 587         mp->num_planes = fmt->planes;
 588         for (p = 0; p < mp->num_planes; p++) {
 589                 if (pfmt[p].bytesperline > max_bpl)
 590                         pfmt[p].bytesperline = max_bpl;
 591                 if (pfmt[p].bytesperline < bytesperline)
 592                         pfmt[p].bytesperline = bytesperline;
 593                 pfmt[p].sizeimage = pfmt[p].bytesperline * mp->height +
 594                         fmt->data_offset[p];
 595                 memset(pfmt[p].reserved, 0, sizeof(pfmt[p].reserved));
 596         }
 597         mp->colorspace = vivid_colorspace_cap(dev);
 598         memset(mp->reserved, 0, sizeof(mp->reserved));
 599         return 0;
 600 }
 601
 602 int vivid_s_fmt_vid_cap(struct file *file, void *priv,
 603                                         struct v4l2_format *f)
 604 {
 605         struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
 606         struct vivid_dev *dev = video_drvdata(file);
 607         struct v4l2_rect *crop = &dev->crop_cap;
 608         struct v4l2_rect *compose = &dev->compose_cap;
 609         struct vb2_queue *q = &dev->vb_vid_cap_q;
 610         int ret = vivid_try_fmt_vid_cap(file, priv, f);
 611         unsigned factor = 1;
 612         unsigned i;
 613
 614         if (ret < 0)
 615                 return ret;
 616
 617         if (vb2_is_busy(q)) {
 618                 dprintk(dev, 1, "%s device busy\n", __func__);
 619                 return -EBUSY;
 620         }
 621
 622         if (dev->overlay_cap_owner && dev->fb_cap.fmt.pixelformat != mp->pixelformat) {
 623                 dprintk(dev, 1, "overlay is active, can't change pixelformat\n");
 624                 return -EBUSY;
 625         }
 626
 627         dev->fmt_cap = vivid_get_format(dev, mp->pixelformat);
 628         if (V4L2_FIELD_HAS_T_OR_B(mp->field))
 629                 factor = 2;
 630
 631         /* Note: the webcam input doesn't support scaling, cropping or composing */
 632
 633         if (!vivid_is_webcam(dev) &&
 634             (dev->has_scaler_cap || dev->has_crop_cap || dev->has_compose_cap)) {
 635                 struct v4l2_rect r = { 0, 0, mp->width, mp->height };
 636
 637                 if (dev->has_scaler_cap) {
 638                         if (dev->has_compose_cap)
 639                                 rect_map_inside(compose, &r);
 640                         else
 641                                 *compose = r;
 642                         if (dev->has_crop_cap && !dev->has_compose_cap) {
 643                                 struct v4l2_rect min_r = {
 644                                         0, 0,
 645                                         r.width / MAX_ZOOM,
 646                                         factor * r.height / MAX_ZOOM
 647                                 };
 648                                 struct v4l2_rect max_r = {
 649                                         0, 0,
 650                                         r.width * MAX_ZOOM,
 651                                         factor * r.height * MAX_ZOOM
 652                                 };
 653
 654                                 rect_set_min_size(crop, &min_r);
 655                                 rect_set_max_size(crop, &max_r);
 656                                 rect_map_inside(crop, &dev->crop_bounds_cap);
 657                         } else if (dev->has_crop_cap) {
 658                                 struct v4l2_rect min_r = {
 659                                         0, 0,
 660                                         compose->width / MAX_ZOOM,
 661                                         factor * compose->height / MAX_ZOOM
 662                                 };
 663                                 struct v4l2_rect max_r = {
 664                                         0, 0,
 665                                         compose->width * MAX_ZOOM,
 666                                         factor * compose->height * MAX_ZOOM
 667                                 };
 668
 669                                 rect_set_min_size(crop, &min_r);
 670                                 rect_set_max_size(crop, &max_r);
 671                                 rect_map_inside(crop, &dev->crop_bounds_cap);
 672                         }
 673                 } else if (dev->has_crop_cap && !dev->has_compose_cap) {
 674                         r.height *= factor;
 675                         rect_set_size_to(crop, &r);
 676                         rect_map_inside(crop, &dev->crop_bounds_cap);
 677                         r = *crop;
 678                         r.height /= factor;
 679                         rect_set_size_to(compose, &r);
 680                 } else if (!dev->has_crop_cap) {
 681                         rect_map_inside(compose, &r);
 682                 } else {
 683                         r.height *= factor;
 684                         rect_set_max_size(crop, &r);
 685                         rect_map_inside(crop, &dev->crop_bounds_cap);
 686                         compose->top *= factor;
 687                         compose->height *= factor;
 688                         rect_set_size_to(compose, crop);
 689                         rect_map_inside(compose, &r);
 690                         compose->top /= factor;
 691                         compose->height /= factor;
 692                 }
 693         } else if (vivid_is_webcam(dev)) {
 694                 /* Guaranteed to be a match */
 695                 for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
 696                         if (webcam_sizes[i].width == mp->width &&
 697                                         webcam_sizes[i].height == mp->height)
 698                                 break;
 699                 dev->webcam_size_idx = i;
 700                 if (dev->webcam_ival_idx >= 2 * (3 - i))
 701                         dev->webcam_ival_idx = 2 * (3 - i) - 1;
 702                 vivid_update_format_cap(dev, false);
 703         } else {
 704                 struct v4l2_rect r = { 0, 0, mp->width, mp->height };
 705
 706                 rect_set_size_to(compose, &r);
 707                 r.height *= factor;
 708                 rect_set_size_to(crop, &r);
 709         }
 710
 711         dev->fmt_cap_rect.width = mp->width;
 712         dev->fmt_cap_rect.height = mp->height;
 713         tpg_s_buf_height(&dev->tpg, mp->height);
 714         tpg_s_bytesperline(&dev->tpg, 0, mp->plane_fmt[0].bytesperline);
 715         if (tpg_g_planes(&dev->tpg) > 1)
 716                 tpg_s_bytesperline(&dev->tpg, 1, mp->plane_fmt[1].bytesperline);
 717         dev->field_cap = mp->field;
 718         tpg_s_field(&dev->tpg, dev->field_cap);
 719         tpg_s_crop_compose(&dev->tpg, &dev->crop_cap, &dev->compose_cap);
 720         tpg_s_fourcc(&dev->tpg, dev->fmt_cap->fourcc);
 721         if (vivid_is_sdtv_cap(dev))
 722                 dev->tv_field_cap = mp->field;
 723         tpg_update_mv_step(&dev->tpg);
 724         return 0;
 725 }
 726
 727 int vidioc_g_fmt_vid_cap_mplane(struct file *file, void *priv,
 728                                         struct v4l2_format *f)
 729 {
 730         struct vivid_dev *dev = video_drvdata(file);
 731
 732         if (!dev->multiplanar)
 733                 return -ENOTTY;
 734         return vivid_g_fmt_vid_cap(file, priv, f);
 735 }
 736
 737 int vidioc_try_fmt_vid_cap_mplane(struct file *file, void *priv,
 738                         struct v4l2_format *f)
 739 {
 740         struct vivid_dev *dev = video_drvdata(file);
 741
 742         if (!dev->multiplanar)
 743                 return -ENOTTY;
 744         return vivid_try_fmt_vid_cap(file, priv, f);
 745 }
 746
 747 int vidioc_s_fmt_vid_cap_mplane(struct file *file, void *priv,
 748                         struct v4l2_format *f)
 749 {
 750         struct vivid_dev *dev = video_drvdata(file);
 751
 752         if (!dev->multiplanar)
 753                 return -ENOTTY;
 754         return vivid_s_fmt_vid_cap(file, priv, f);
 755 }
 756
 757 int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 758                                         struct v4l2_format *f)
 759 {
 760         struct vivid_dev *dev = video_drvdata(file);
 761
 762         if (dev->multiplanar)
 763                 return -ENOTTY;
 764         return fmt_sp2mp_func(file, priv, f, vivid_g_fmt_vid_cap);
 765 }
 766
 767 int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 768                         struct v4l2_format *f)
 769 {
 770         struct vivid_dev *dev = video_drvdata(file);
 771
 772         if (dev->multiplanar)
 773                 return -ENOTTY;
 774         return fmt_sp2mp_func(file, priv, f, vivid_try_fmt_vid_cap);
 775 }
 776
 777 int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 778                         struct v4l2_format *f)
 779 {
 780         struct vivid_dev *dev = video_drvdata(file);
 781
 782         if (dev->multiplanar)
 783                 return -ENOTTY;
 784         return fmt_sp2mp_func(file, priv, f, vivid_s_fmt_vid_cap);
 785 }
 786
 787 int vivid_vid_cap_g_selection(struct file *file, void *priv,
 788                               struct v4l2_selection *sel)
 789 {
 790         struct vivid_dev *dev = video_drvdata(file);
 791
 792         if (!dev->has_crop_cap && !dev->has_compose_cap)
 793                 return -ENOTTY;
 794         if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 795                 return -EINVAL;
 796         if (vivid_is_webcam(dev))
 797                 return -EINVAL;
 798
 799         sel->r.left = sel->r.top = 0;
 800         switch (sel->target) {
 801         case V4L2_SEL_TGT_CROP:
 802                 if (!dev->has_crop_cap)
 803                         return -EINVAL;
 804                 sel->r = dev->crop_cap;
 805                 break;
 806         case V4L2_SEL_TGT_CROP_DEFAULT:
 807         case V4L2_SEL_TGT_CROP_BOUNDS:
 808                 if (!dev->has_crop_cap)
 809                         return -EINVAL;
 810                 sel->r = dev->src_rect;
 811                 break;
 812         case V4L2_SEL_TGT_COMPOSE_BOUNDS:
 813                 if (!dev->has_compose_cap)
 814                         return -EINVAL;
 815                 sel->r = vivid_max_rect;
 816                 break;
 817         case V4L2_SEL_TGT_COMPOSE:
 818                 if (!dev->has_compose_cap)
 819                         return -EINVAL;
 820                 sel->r = dev->compose_cap;
 821                 break;
 822         case V4L2_SEL_TGT_COMPOSE_DEFAULT:
 823                 if (!dev->has_compose_cap)
 824                         return -EINVAL;
 825                 sel->r = dev->fmt_cap_rect;
 826                 break;
 827         default:
 828                 return -EINVAL;
 829         }
 830         return 0;
 831 }
 832
 833 int vivid_vid_cap_s_selection(struct file *file, void *fh, struct v4l2_selection *s)
 834 {
 835         struct vivid_dev *dev = video_drvdata(file);
 836         struct v4l2_rect *crop = &dev->crop_cap;
 837         struct v4l2_rect *compose = &dev->compose_cap;
 838         unsigned factor = V4L2_FIELD_HAS_T_OR_B(dev->field_cap) ? 2 : 1;
 839         int ret;
 840
 841         if (!dev->has_crop_cap && !dev->has_compose_cap)
 842                 return -ENOTTY;
 843         if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 844                 return -EINVAL;
 845         if (vivid_is_webcam(dev))
 846                 return -EINVAL;
 847
 848         switch (s->target) {
 849         case V4L2_SEL_TGT_CROP:
 850                 if (!dev->has_crop_cap)
 851                         return -EINVAL;
 852                 ret = vivid_vid_adjust_sel(s->flags, &s->r);
 853                 if (ret)
 854                         return ret;
 855                 rect_set_min_size(&s->r, &vivid_min_rect);
 856                 rect_set_max_size(&s->r, &dev->src_rect);
 857                 rect_map_inside(&s->r, &dev->crop_bounds_cap);
 858                 s->r.top /= factor;
 859                 s->r.height /= factor;
 860                 if (dev->has_scaler_cap) {
 861                         struct v4l2_rect fmt = dev->fmt_cap_rect;
 862                         struct v4l2_rect max_rect = {
 863                                 0, 0,
 864                                 s->r.width * MAX_ZOOM,
 865                                 s->r.height * MAX_ZOOM
 866                         };
 867                         struct v4l2_rect min_rect = {
 868                                 0, 0,
 869                                 s->r.width / MAX_ZOOM,
 870                                 s->r.height / MAX_ZOOM
 871                         };
 872
 873                         rect_set_min_size(&fmt, &min_rect);
 874                         if (!dev->has_compose_cap)
 875                                 rect_set_max_size(&fmt, &max_rect);
 876                         if (!rect_same_size(&dev->fmt_cap_rect, &fmt) &&
 877                             vb2_is_busy(&dev->vb_vid_cap_q))
 878                                 return -EBUSY;
 879                         if (dev->has_compose_cap) {
 880                                 rect_set_min_size(compose, &min_rect);
 881                                 rect_set_max_size(compose, &max_rect);
 882                         }
 883                         dev->fmt_cap_rect = fmt;
 884                         tpg_s_buf_height(&dev->tpg, fmt.height);
 885                 } else if (dev->has_compose_cap) {
 886                         struct v4l2_rect fmt = dev->fmt_cap_rect;
 887
 888                         rect_set_min_size(&fmt, &s->r);
 889                         if (!rect_same_size(&dev->fmt_cap_rect, &fmt) &&
 890                             vb2_is_busy(&dev->vb_vid_cap_q))
 891                                 return -EBUSY;
 892                         dev->fmt_cap_rect = fmt;
 893                         tpg_s_buf_height(&dev->tpg, fmt.height);
 894                         rect_set_size_to(compose, &s->r);
 895                         rect_map_inside(compose, &dev->fmt_cap_rect);
 896                 } else {
 897                         if (!rect_same_size(&s->r, &dev->fmt_cap_rect) &&
 898                             vb2_is_busy(&dev->vb_vid_cap_q))
 899                                 return -EBUSY;
 900                         rect_set_size_to(&dev->fmt_cap_rect, &s->r);
 901                         rect_set_size_to(compose, &s->r);
 902                         rect_map_inside(compose, &dev->fmt_cap_rect);
 903                         tpg_s_buf_height(&dev->tpg, dev->fmt_cap_rect.height);
 904                 }
 905                 s->r.top *= factor;
 906                 s->r.height *= factor;
 907                 *crop = s->r;
 908                 break;
 909         case V4L2_SEL_TGT_COMPOSE:
 910                 if (!dev->has_compose_cap)
 911                         return -EINVAL;
 912                 ret = vivid_vid_adjust_sel(s->flags, &s->r);
 913                 if (ret)
 914                         return ret;
 915                 rect_set_min_size(&s->r, &vivid_min_rect);
 916                 rect_set_max_size(&s->r, &dev->fmt_cap_rect);
 917                 if (dev->has_scaler_cap) {
 918                         struct v4l2_rect max_rect = {
 919                                 0, 0,
 920                                 dev->src_rect.width * MAX_ZOOM,
 921                                 (dev->src_rect.height / factor) * MAX_ZOOM
 922                         };
 923
 924                         rect_set_max_size(&s->r, &max_rect);
 925                         if (dev->has_crop_cap) {
 926                                 struct v4l2_rect min_rect = {
 927                                         0, 0,
 928                                         s->r.width / MAX_ZOOM,
 929                                         (s->r.height * factor) / MAX_ZOOM
 930                                 };
 931                                 struct v4l2_rect max_rect = {
 932                                         0, 0,
 933                                         s->r.width * MAX_ZOOM,
 934                                         (s->r.height * factor) * MAX_ZOOM
 935                                 };
 936
 937                                 rect_set_min_size(crop, &min_rect);
 938                                 rect_set_max_size(crop, &max_rect);
 939                                 rect_map_inside(crop, &dev->crop_bounds_cap);
 940                         }
 941                 } else if (dev->has_crop_cap) {
 942                         s->r.top *= factor;
 943                         s->r.height *= factor;
 944                         rect_set_max_size(&s->r, &dev->src_rect);
 945                         rect_set_size_to(crop, &s->r);
 946                         rect_map_inside(crop, &dev->crop_bounds_cap);
 947                         s->r.top /= factor;
 948                         s->r.height /= factor;
 949                 } else {
 950                         rect_set_size_to(&s->r, &dev->src_rect);
 951                         s->r.height /= factor;
 952                 }
 953                 rect_map_inside(&s->r, &dev->fmt_cap_rect);
 954                 if (dev->bitmap_cap && (compose->width != s->r.width ||
 955                                         compose->height != s->r.height)) {
 956                         kfree(dev->bitmap_cap);
 957                         dev->bitmap_cap = NULL;
 958                 }
 959                 *compose = s->r;
 960                 break;
 961         default:
 962                 return -EINVAL;
 963         }
 964
 965         tpg_s_crop_compose(&dev->tpg, crop, compose);
 966         return 0;
 967 }
 968
 969 int vivid_vid_cap_cropcap(struct file *file, void *priv,
 970                               struct v4l2_cropcap *cap)
 971 {
 972         struct vivid_dev *dev = video_drvdata(file);
 973
 974         if (cap->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 975                 return -EINVAL;
 976
 977         switch (vivid_get_pixel_aspect(dev)) {
 978         case TPG_PIXEL_ASPECT_NTSC:
 979                 cap->pixelaspect.numerator = 11;
 980                 cap->pixelaspect.denominator = 10;
 981                 break;
 982         case TPG_PIXEL_ASPECT_PAL:
 983                 cap->pixelaspect.numerator = 54;
 984                 cap->pixelaspect.denominator = 59;
 985                 break;
 986         case TPG_PIXEL_ASPECT_SQUARE:
 987                 cap->pixelaspect.numerator = 1;
 988                 cap->pixelaspect.denominator = 1;
 989                 break;
 990         }
 991         return 0;
 992 }
 993
 994 int vidioc_enum_fmt_vid_overlay(struct file *file, void  *priv,
 995                                         struct v4l2_fmtdesc *f)
 996 {
 997         const struct vivid_fmt *fmt;
 998
 999         if (f->index >= ARRAY_SIZE(formats_ovl))
1000                 return -EINVAL;
1001
1002         fmt = &formats_ovl[f->index];
1003
1004         strlcpy(f->description, fmt->name, sizeof(f->description));
1005         f->pixelformat = fmt->fourcc;
1006         return 0;
1007 }
1008
1009 int vidioc_g_fmt_vid_overlay(struct file *file, void *priv,
1010                                         struct v4l2_format *f)
1011 {
1012         struct vivid_dev *dev = video_drvdata(file);
1013         const struct v4l2_rect *compose = &dev->compose_cap;
1014         struct v4l2_window *win = &f->fmt.win;
1015         unsigned clipcount = win->clipcount;
1016
1017         win->w.top = dev->overlay_cap_top;
1018         win->w.left = dev->overlay_cap_left;
1019         win->w.width = compose->width;
1020         win->w.height = compose->height;
1021         win->field = dev->overlay_cap_field;
1022         win->clipcount = dev->clipcount_cap;
1023         if (clipcount > dev->clipcount_cap)
1024                 clipcount = dev->clipcount_cap;
1025         if (dev->bitmap_cap == NULL)
1026                 win->bitmap = NULL;
1027         else if (win->bitmap) {
1028                 if (copy_to_user(win->bitmap, dev->bitmap_cap,
1029                     ((compose->width + 7) / 8) * compose->height))
1030                         return -EFAULT;
1031         }
1032         if (clipcount && win->clips) {
1033                 if (copy_to_user(win->clips, dev->clips_cap,
1034                                  clipcount * sizeof(dev->clips_cap[0])))
1035                         return -EFAULT;
1036         }
1037         return 0;
1038 }
1039
1040 int vidioc_try_fmt_vid_overlay(struct file *file, void *priv,
1041                                         struct v4l2_format *f)
1042 {
1043         struct vivid_dev *dev = video_drvdata(file);
1044         const struct v4l2_rect *compose = &dev->compose_cap;
1045         struct v4l2_window *win = &f->fmt.win;
1046         int i, j;
1047
1048         win->w.left = clamp_t(int, win->w.left,
1049                               -dev->fb_cap.fmt.width, dev->fb_cap.fmt.width);
1050         win->w.top = clamp_t(int, win->w.top,
1051                              -dev->fb_cap.fmt.height, dev->fb_cap.fmt.height);
1052         win->w.width = compose->width;
1053         win->w.height = compose->height;
1054         if (win->field != V4L2_FIELD_BOTTOM && win->field != V4L2_FIELD_TOP)
1055                 win->field = V4L2_FIELD_ANY;
1056         win->chromakey = 0;
1057         win->global_alpha = 0;
1058         if (win->clipcount && !win->clips)
1059                 win->clipcount = 0;
1060         if (win->clipcount > MAX_CLIPS)
1061                 win->clipcount = MAX_CLIPS;
1062         if (win->clipcount) {
1063                 if (copy_from_user(dev->try_clips_cap, win->clips,
1064                                    win->clipcount * sizeof(dev->clips_cap[0])))
1065                         return -EFAULT;
1066                 for (i = 0; i < win->clipcount; i++) {
1067                         struct v4l2_rect *r = &dev->try_clips_cap[i].c;
1068
1069                         r->top = clamp_t(s32, r->top, 0, dev->fb_cap.fmt.height - 1);
1070                         r->height = clamp_t(s32, r->height, 1, dev->fb_cap.fmt.height - r->top);
1071                         r->left = clamp_t(u32, r->left, 0, dev->fb_cap.fmt.width - 1);
1072                         r->width = clamp_t(u32, r->width, 1, dev->fb_cap.fmt.width - r->left);
1073                 }
1074                 /*
1075                  * Yeah, so sue me, it's an O(n^2) algorithm. But n is a small
1076                  * number and it's typically a one-time deal.
1077                  */
1078                 for (i = 0; i < win->clipcount - 1; i++) {
1079                         struct v4l2_rect *r1 = &dev->try_clips_cap[i].c;
1080
1081                         for (j = i + 1; j < win->clipcount; j++) {
1082                                 struct v4l2_rect *r2 = &dev->try_clips_cap[j].c;
1083
1084                                 if (rect_overlap(r1, r2))
1085                                         return -EINVAL;
1086                         }
1087                 }
1088                 if (copy_to_user(win->clips, dev->try_clips_cap,
1089                                  win->clipcount * sizeof(dev->clips_cap[0])))
1090                         return -EFAULT;
1091         }
1092         return 0;
1093 }
1094
1095 int vidioc_s_fmt_vid_overlay(struct file *file, void *priv,
1096                                         struct v4l2_format *f)
1097 {
1098         struct vivid_dev *dev = video_drvdata(file);
1099         const struct v4l2_rect *compose = &dev->compose_cap;
1100         struct v4l2_window *win = &f->fmt.win;
1101         int ret = vidioc_try_fmt_vid_overlay(file, priv, f);
1102         unsigned bitmap_size = ((compose->width + 7) / 8) * compose->height;
1103         unsigned clips_size = win->clipcount * sizeof(dev->clips_cap[0]);
1104         void *new_bitmap = NULL;
1105
1106         if (ret)
1107                 return ret;
1108
1109         if (win->bitmap) {
1110                 new_bitmap = vzalloc(bitmap_size);
1111
1112                 if (new_bitmap == NULL)
1113                         return -ENOMEM;
1114                 if (copy_from_user(new_bitmap, win->bitmap, bitmap_size)) {
1115                         vfree(new_bitmap);
1116                         return -EFAULT;
1117                 }
1118         }
1119
1120         dev->overlay_cap_top = win->w.top;
1121         dev->overlay_cap_left = win->w.left;
1122         dev->overlay_cap_field = win->field;
1123         vfree(dev->bitmap_cap);
1124         dev->bitmap_cap = new_bitmap;
1125         dev->clipcount_cap = win->clipcount;
1126         if (dev->clipcount_cap)
1127                 memcpy(dev->clips_cap, dev->try_clips_cap, clips_size);
1128         return 0;
1129 }
1130
1131 int vivid_vid_cap_overlay(struct file *file, void *fh, unsigned i)
1132 {
1133         struct vivid_dev *dev = video_drvdata(file);
1134
1135         if (i && dev->fb_vbase_cap == NULL)
1136                 return -EINVAL;
1137
1138         if (i && dev->fb_cap.fmt.pixelformat != dev->fmt_cap->fourcc) {
1139                 dprintk(dev, 1, "mismatch between overlay and video capture pixelformats\n");
1140                 return -EINVAL;
1141         }
1142
1143         if (dev->overlay_cap_owner && dev->overlay_cap_owner != fh)
1144                 return -EBUSY;
1145         dev->overlay_cap_owner = i ? fh : NULL;
1146         return 0;
1147 }
1148
1149 int vivid_vid_cap_g_fbuf(struct file *file, void *fh,
1150                                 struct v4l2_framebuffer *a)
1151 {
1152         struct vivid_dev *dev = video_drvdata(file);
1153
1154         *a = dev->fb_cap;
1155         a->capability = V4L2_FBUF_CAP_BITMAP_CLIPPING |
1156                         V4L2_FBUF_CAP_LIST_CLIPPING;
1157         a->flags = V4L2_FBUF_FLAG_PRIMARY;
1158         a->fmt.field = V4L2_FIELD_NONE;
1159         a->fmt.colorspace = V4L2_COLORSPACE_SRGB;
1160         a->fmt.priv = 0;
1161         return 0;
1162 }
1163
1164 int vivid_vid_cap_s_fbuf(struct file *file, void *fh,
1165                                 const struct v4l2_framebuffer *a)
1166 {
1167         struct vivid_dev *dev = video_drvdata(file);
1168         const struct vivid_fmt *fmt;
1169
1170         if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO))
1171                 return -EPERM;
1172
1173         if (dev->overlay_cap_owner)
1174                 return -EBUSY;
1175
1176         if (a->base == NULL) {
1177                 dev->fb_cap.base = NULL;
1178                 dev->fb_vbase_cap = NULL;
1179                 return 0;
1180         }
1181
1182         if (a->fmt.width < 48 || a->fmt.height < 32)
1183                 return -EINVAL;
1184         fmt = vivid_get_format(dev, a->fmt.pixelformat);
1185         if (!fmt || !fmt->can_do_overlay)
1186                 return -EINVAL;
1187         if (a->fmt.bytesperline < (a->fmt.width * fmt->depth) / 8)
1188                 return -EINVAL;
1189         if (a->fmt.height * a->fmt.bytesperline < a->fmt.sizeimage)
1190                 return -EINVAL;
1191
1192         dev->fb_vbase_cap = phys_to_virt((unsigned long)a->base);
1193         dev->fb_cap = *a;
1194         dev->overlay_cap_left = clamp_t(int, dev->overlay_cap_left,
1195                                     -dev->fb_cap.fmt.width, dev->fb_cap.fmt.width);
1196         dev->overlay_cap_top = clamp_t(int, dev->overlay_cap_top,
1197                                    -dev->fb_cap.fmt.height, dev->fb_cap.fmt.height);
1198         return 0;
1199 }
1200
1201 static const struct v4l2_audio vivid_audio_inputs[] = {
1202         { 0, "TV", V4L2_AUDCAP_STEREO },
1203         { 1, "Line-In", V4L2_AUDCAP_STEREO },
1204 };
1205
1206 int vidioc_enum_input(struct file *file, void *priv,
1207                                 struct v4l2_input *inp)
1208 {
1209         struct vivid_dev *dev = video_drvdata(file);
1210
1211         if (inp->index >= dev->num_inputs)
1212                 return -EINVAL;
1213
1214         inp->type = V4L2_INPUT_TYPE_CAMERA;
1215         switch (dev->input_type[inp->index]) {
1216         case WEBCAM:
1217                 snprintf(inp->name, sizeof(inp->name), "Webcam %u",
1218                                 dev->input_name_counter[inp->index]);
1219                 inp->capabilities = 0;
1220                 break;
1221         case TV:
1222                 snprintf(inp->name, sizeof(inp->name), "TV %u",
1223                                 dev->input_name_counter[inp->index]);
1224                 inp->type = V4L2_INPUT_TYPE_TUNER;
1225                 inp->std = V4L2_STD_ALL;
1226                 if (dev->has_audio_inputs)
1227                         inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1228                 inp->capabilities = V4L2_IN_CAP_STD;
1229                 break;
1230         case SVID:
1231                 snprintf(inp->name, sizeof(inp->name), "S-Video %u",
1232                                 dev->input_name_counter[inp->index]);
1233                 inp->std = V4L2_STD_ALL;
1234                 if (dev->has_audio_inputs)
1235                         inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1236                 inp->capabilities = V4L2_IN_CAP_STD;
1237                 break;
1238         case HDMI:
1239                 snprintf(inp->name, sizeof(inp->name), "HDMI %u",
1240                                 dev->input_name_counter[inp->index]);
1241                 inp->capabilities = V4L2_IN_CAP_DV_TIMINGS;
1242                 if (dev->edid_blocks == 0 ||
1243                     dev->dv_timings_signal_mode == NO_SIGNAL)
1244                         inp->status |= V4L2_IN_ST_NO_SIGNAL;
1245                 else if (dev->dv_timings_signal_mode == NO_LOCK ||
1246                          dev->dv_timings_signal_mode == OUT_OF_RANGE)
1247                         inp->status |= V4L2_IN_ST_NO_H_LOCK;
1248                 break;
1249         }
1250         if (dev->sensor_hflip)
1251                 inp->status |= V4L2_IN_ST_HFLIP;
1252         if (dev->sensor_vflip)
1253                 inp->status |= V4L2_IN_ST_VFLIP;
1254         if (dev->input == inp->index && vivid_is_sdtv_cap(dev)) {
1255                 if (dev->std_signal_mode == NO_SIGNAL) {
1256                         inp->status |= V4L2_IN_ST_NO_SIGNAL;
1257                 } else if (dev->std_signal_mode == NO_LOCK) {
1258                         inp->status |= V4L2_IN_ST_NO_H_LOCK;
1259                 } else if (vivid_is_tv_cap(dev)) {
1260                         switch (tpg_g_quality(&dev->tpg)) {
1261                         case TPG_QUAL_GRAY:
1262                                 inp->status |= V4L2_IN_ST_COLOR_KILL;
1263                                 break;
1264                         case TPG_QUAL_NOISE:
1265                                 inp->status |= V4L2_IN_ST_NO_H_LOCK;
1266                                 break;
1267                         default:
1268                                 break;
1269                         }
1270                 }
1271         }
1272         return 0;
1273 }
1274
1275 int vidioc_g_input(struct file *file, void *priv, unsigned *i)
1276 {
1277         struct vivid_dev *dev = video_drvdata(file);
1278
1279         *i = dev->input;
1280         return 0;
1281 }
1282
1283 int vidioc_s_input(struct file *file, void *priv, unsigned i)
1284 {
1285         struct vivid_dev *dev = video_drvdata(file);
1286         struct v4l2_bt_timings *bt = &dev->dv_timings_cap.bt;
1287         unsigned brightness;
1288
1289         if (i >= dev->num_inputs)
1290                 return -EINVAL;
1291
1292         if (i == dev->input)
1293                 return 0;
1294
1295         if (vb2_is_busy(&dev->vb_vid_cap_q) || vb2_is_busy(&dev->vb_vbi_cap_q))
1296                 return -EBUSY;
1297
1298         dev->input = i;
1299         dev->vid_cap_dev.tvnorms = 0;
1300         if (dev->input_type[i] == TV || dev->input_type[i] == SVID) {
1301                 dev->tv_audio_input = (dev->input_type[i] == TV) ? 0 : 1;
1302                 dev->vid_cap_dev.tvnorms = V4L2_STD_ALL;
1303         }
1304         dev->vbi_cap_dev.tvnorms = dev->vid_cap_dev.tvnorms;
1305         vivid_update_format_cap(dev, false);
1306
1307         if (dev->colorspace) {
1308                 switch (dev->input_type[i]) {
1309                 case WEBCAM:
1310                         v4l2_ctrl_s_ctrl(dev->colorspace, V4L2_COLORSPACE_SRGB);
1311                         break;
1312                 case TV:
1313                 case SVID:
1314                         v4l2_ctrl_s_ctrl(dev->colorspace, V4L2_COLORSPACE_SMPTE170M);
1315                         break;
1316                 case HDMI:
1317                         if (bt->standards & V4L2_DV_BT_STD_CEA861) {
1318                                 if (dev->src_rect.width == 720 && dev->src_rect.height <= 576)
1319                                         v4l2_ctrl_s_ctrl(dev->colorspace, V4L2_COLORSPACE_SMPTE170M);
1320                                 else
1321                                         v4l2_ctrl_s_ctrl(dev->colorspace, V4L2_COLORSPACE_REC709);
1322                         } else {
1323                                 v4l2_ctrl_s_ctrl(dev->colorspace, V4L2_COLORSPACE_SRGB);
1324                         }
1325                         break;
1326                 }
1327         }
1328
1329         /*
1330          * Modify the brightness range depending on the input.
1331          * This makes it easy to use vivid to test if applications can
1332          * handle control range modifications and is also how this is
1333          * typically used in practice as different inputs may be hooked
1334          * up to different receivers with different control ranges.
1335          */
1336         brightness = 128 * i + dev->input_brightness[i];
1337         v4l2_ctrl_modify_range(dev->brightness,
1338                         128 * i, 255 + 128 * i, 1, 128 + 128 * i);
1339         v4l2_ctrl_s_ctrl(dev->brightness, brightness);
1340         return 0;
1341 }
1342
1343 int vidioc_enumaudio(struct file *file, void *fh, struct v4l2_audio *vin)
1344 {
1345         if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1346                 return -EINVAL;
1347         *vin = vivid_audio_inputs[vin->index];
1348         return 0;
1349 }
1350
1351 int vidioc_g_audio(struct file *file, void *fh, struct v4l2_audio *vin)
1352 {
1353         struct vivid_dev *dev = video_drvdata(file);
1354
1355         if (!vivid_is_sdtv_cap(dev))
1356                 return -EINVAL;
1357         *vin = vivid_audio_inputs[dev->tv_audio_input];
1358         return 0;
1359 }
1360
1361 int vidioc_s_audio(struct file *file, void *fh, const struct v4l2_audio *vin)
1362 {
1363         struct vivid_dev *dev = video_drvdata(file);
1364
1365         if (!vivid_is_sdtv_cap(dev))
1366                 return -EINVAL;
1367         if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1368                 return -EINVAL;
1369         dev->tv_audio_input = vin->index;
1370         return 0;
1371 }
1372
1373 int vivid_video_g_frequency(struct file *file, void *fh, struct v4l2_frequency *vf)
1374 {
1375         struct vivid_dev *dev = video_drvdata(file);
1376
1377         if (vf->tuner != 0)
1378                 return -EINVAL;
1379         vf->frequency = dev->tv_freq;
1380         return 0;
1381 }
1382
1383 int vivid_video_s_frequency(struct file *file, void *fh, const struct v4l2_frequency *vf)
1384 {
1385         struct vivid_dev *dev = video_drvdata(file);
1386
1387         if (vf->tuner != 0)
1388                 return -EINVAL;
1389         dev->tv_freq = clamp_t(unsigned, vf->frequency, MIN_TV_FREQ, MAX_TV_FREQ);
1390         if (vivid_is_tv_cap(dev))
1391                 vivid_update_quality(dev);
1392         return 0;
1393 }
1394
1395 int vivid_video_s_tuner(struct file *file, void *fh, const struct v4l2_tuner *vt)
1396 {
1397         struct vivid_dev *dev = video_drvdata(file);
1398
1399         if (vt->index != 0)
1400                 return -EINVAL;
1401         if (vt->audmode > V4L2_TUNER_MODE_LANG1_LANG2)
1402                 return -EINVAL;
1403         dev->tv_audmode = vt->audmode;
1404         return 0;
1405 }
1406
1407 int vivid_video_g_tuner(struct file *file, void *fh, struct v4l2_tuner *vt)
1408 {
1409         struct vivid_dev *dev = video_drvdata(file);
1410         enum tpg_quality qual;
1411
1412         if (vt->index != 0)
1413                 return -EINVAL;
1414
1415         vt->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO |
1416                          V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
1417         vt->audmode = dev->tv_audmode;
1418         vt->rangelow = MIN_TV_FREQ;
1419         vt->rangehigh = MAX_TV_FREQ;
1420         qual = vivid_get_quality(dev, &vt->afc);
1421         if (qual == TPG_QUAL_COLOR)
1422                 vt->signal = 0xffff;
1423         else if (qual == TPG_QUAL_GRAY)
1424                 vt->signal = 0x8000;
1425         else
1426                 vt->signal = 0;
1427         if (qual == TPG_QUAL_NOISE) {
1428                 vt->rxsubchans = 0;
1429         } else if (qual == TPG_QUAL_GRAY) {
1430                 vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1431         } else {
1432                 unsigned channel_nr = dev->tv_freq / (6 * 16);
1433                 unsigned options = (dev->std_cap & V4L2_STD_NTSC_M) ? 4 : 3;
1434
1435                 switch (channel_nr % options) {
1436                 case 0:
1437                         vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1438                         break;
1439                 case 1:
1440                         vt->rxsubchans = V4L2_TUNER_SUB_STEREO;
1441                         break;
1442                 case 2:
1443                         if (dev->std_cap & V4L2_STD_NTSC_M)
1444                                 vt->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_SAP;
1445                         else
1446                                 vt->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1447                         break;
1448                 case 3:
1449                         vt->rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_SAP;
1450                         break;
1451                 }
1452         }
1453         strlcpy(vt->name, "TV Tuner", sizeof(vt->name));
1454         return 0;
1455 }
1456
1457 /* Must remain in sync with the vivid_ctrl_standard_strings array */
1458 const v4l2_std_id vivid_standard[] = {
1459         V4L2_STD_NTSC_M,
1460         V4L2_STD_NTSC_M_JP,
1461         V4L2_STD_NTSC_M_KR,
1462         V4L2_STD_NTSC_443,
1463         V4L2_STD_PAL_BG | V4L2_STD_PAL_H,
1464         V4L2_STD_PAL_I,
1465         V4L2_STD_PAL_DK,
1466         V4L2_STD_PAL_M,
1467         V4L2_STD_PAL_N,
1468         V4L2_STD_PAL_Nc,
1469         V4L2_STD_PAL_60,
1470         V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H,
1471         V4L2_STD_SECAM_DK,
1472         V4L2_STD_SECAM_L,
1473         V4L2_STD_SECAM_LC,
1474         V4L2_STD_UNKNOWN
1475 };
1476
1477 /* Must remain in sync with the vivid_standard array */
1478 const char * const vivid_ctrl_standard_strings[] = {
1479         "NTSC-M",
1480         "NTSC-M-JP",
1481         "NTSC-M-KR",
1482         "NTSC-443",
1483         "PAL-BGH",
1484         "PAL-I",
1485         "PAL-DK",
1486         "PAL-M",
1487         "PAL-N",
1488         "PAL-Nc",
1489         "PAL-60",
1490         "SECAM-BGH",
1491         "SECAM-DK",
1492         "SECAM-L",
1493         "SECAM-Lc",
1494         NULL,
1495 };
1496
1497 int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *id)
1498 {
1499         struct vivid_dev *dev = video_drvdata(file);
1500
1501         if (!vivid_is_sdtv_cap(dev))
1502                 return -ENODATA;
1503         if (dev->std_signal_mode == NO_SIGNAL ||
1504             dev->std_signal_mode == NO_LOCK) {
1505                 *id = V4L2_STD_UNKNOWN;
1506                 return 0;
1507         }
1508         if (vivid_is_tv_cap(dev) && tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE) {
1509                 *id = V4L2_STD_UNKNOWN;
1510         } else if (dev->std_signal_mode == CURRENT_STD) {
1511                 *id = dev->std_cap;
1512         } else if (dev->std_signal_mode == SELECTED_STD) {
1513                 *id = dev->query_std;
1514         } else {
1515                 *id = vivid_standard[dev->query_std_last];
1516                 dev->query_std_last = (dev->query_std_last + 1) % ARRAY_SIZE(vivid_standard);
1517         }
1518
1519         return 0;
1520 }
1521
1522 int vivid_vid_cap_s_std(struct file *file, void *priv, v4l2_std_id id)
1523 {
1524         struct vivid_dev *dev = video_drvdata(file);
1525
1526         if (!vivid_is_sdtv_cap(dev))
1527                 return -ENODATA;
1528         if (dev->std_cap == id)
1529                 return 0;
1530         if (vb2_is_busy(&dev->vb_vid_cap_q) || vb2_is_busy(&dev->vb_vbi_cap_q))
1531                 return -EBUSY;
1532         dev->std_cap = id;
1533         vivid_update_format_cap(dev, false);
1534         return 0;
1535 }
1536
1537 int vivid_vid_cap_s_dv_timings(struct file *file, void *_fh,
1538                                     struct v4l2_dv_timings *timings)
1539 {
1540         struct vivid_dev *dev = video_drvdata(file);
1541
1542         if (!vivid_is_hdmi_cap(dev))
1543                 return -ENODATA;
1544         if (vb2_is_busy(&dev->vb_vid_cap_q))
1545                 return -EBUSY;
1546         if (!v4l2_find_dv_timings_cap(timings, &vivid_dv_timings_cap,
1547                                 0, NULL, NULL))
1548                 return -EINVAL;
1549         if (v4l2_match_dv_timings(timings, &dev->dv_timings_cap, 0))
1550                 return 0;
1551         dev->dv_timings_cap = *timings;
1552         vivid_update_format_cap(dev, false);
1553         return 0;
1554 }
1555
1556 int vidioc_query_dv_timings(struct file *file, void *_fh,
1557                                     struct v4l2_dv_timings *timings)
1558 {
1559         struct vivid_dev *dev = video_drvdata(file);
1560
1561         if (!vivid_is_hdmi_cap(dev))
1562                 return -ENODATA;
1563         if (dev->dv_timings_signal_mode == NO_SIGNAL ||
1564             dev->edid_blocks == 0)
1565                 return -ENOLINK;
1566         if (dev->dv_timings_signal_mode == NO_LOCK)
1567                 return -ENOLCK;
1568         if (dev->dv_timings_signal_mode == OUT_OF_RANGE) {
1569                 timings->bt.pixelclock = vivid_dv_timings_cap.bt.max_pixelclock * 2;
1570                 return -ERANGE;
1571         }
1572         if (dev->dv_timings_signal_mode == CURRENT_DV_TIMINGS) {
1573                 *timings = dev->dv_timings_cap;
1574         } else if (dev->dv_timings_signal_mode == SELECTED_DV_TIMINGS) {
1575                 *timings = v4l2_dv_timings_presets[dev->query_dv_timings];
1576         } else {
1577                 *timings = v4l2_dv_timings_presets[dev->query_dv_timings_last];
1578                 dev->query_dv_timings_last = (dev->query_dv_timings_last + 1) %
1579                                                 dev->query_dv_timings_size;
1580         }
1581         return 0;
1582 }
1583
1584 int vidioc_s_edid(struct file *file, void *_fh,
1585                          struct v4l2_edid *edid)
1586 {
1587         struct vivid_dev *dev = video_drvdata(file);
1588
1589         memset(edid->reserved, 0, sizeof(edid->reserved));
1590         if (edid->pad >= dev->num_inputs)
1591                 return -EINVAL;
1592         if (dev->input_type[edid->pad] != HDMI || edid->start_block)
1593                 return -EINVAL;
1594         if (edid->blocks == 0) {
1595                 dev->edid_blocks = 0;
1596                 return 0;
1597         }
1598         if (edid->blocks > dev->edid_max_blocks) {
1599                 edid->blocks = dev->edid_max_blocks;
1600                 return -E2BIG;
1601         }
1602         dev->edid_blocks = edid->blocks;
1603         memcpy(dev->edid, edid->edid, edid->blocks * 128);
1604         return 0;
1605 }
1606
1607 int vidioc_enum_framesizes(struct file *file, void *fh,
1608                                          struct v4l2_frmsizeenum *fsize)
1609 {
1610         struct vivid_dev *dev = video_drvdata(file);
1611
1612         if (!vivid_is_webcam(dev) && !dev->has_scaler_cap)
1613                 return -EINVAL;
1614         if (vivid_get_format(dev, fsize->pixel_format) == NULL)
1615                 return -EINVAL;
1616         if (vivid_is_webcam(dev)) {
1617                 if (fsize->index >= ARRAY_SIZE(webcam_sizes))
1618                         return -EINVAL;
1619                 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1620                 fsize->discrete = webcam_sizes[fsize->index];
1621                 return 0;
1622         }
1623         if (fsize->index)
1624                 return -EINVAL;
1625         fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
1626         fsize->stepwise.min_width = MIN_WIDTH;
1627         fsize->stepwise.max_width = MAX_WIDTH * MAX_ZOOM;
1628         fsize->stepwise.step_width = 2;
1629         fsize->stepwise.min_height = MIN_HEIGHT;
1630         fsize->stepwise.max_height = MAX_HEIGHT * MAX_ZOOM;
1631         fsize->stepwise.step_height = 2;
1632         return 0;
1633 }
1634
1635 /* timeperframe is arbitrary and continuous */
1636 int vidioc_enum_frameintervals(struct file *file, void *priv,
1637                                              struct v4l2_frmivalenum *fival)
1638 {
1639         struct vivid_dev *dev = video_drvdata(file);
1640         const struct vivid_fmt *fmt;
1641         int i;
1642
1643         fmt = vivid_get_format(dev, fival->pixel_format);
1644         if (!fmt)
1645                 return -EINVAL;
1646
1647         if (!vivid_is_webcam(dev)) {
1648                 static const struct v4l2_fract step = { 1, 1 };
1649
1650                 if (fival->index)
1651                         return -EINVAL;
1652                 if (fival->width < MIN_WIDTH || fival->width > MAX_WIDTH * MAX_ZOOM)
1653                         return -EINVAL;
1654                 if (fival->height < MIN_HEIGHT || fival->height > MAX_HEIGHT * MAX_ZOOM)
1655                         return -EINVAL;
1656                 fival->type = V4L2_FRMIVAL_TYPE_CONTINUOUS;
1657                 fival->stepwise.min = tpf_min;
1658                 fival->stepwise.max = tpf_max;
1659                 fival->stepwise.step = step;
1660                 return 0;
1661         }
1662
1663         for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
1664                 if (fival->width == webcam_sizes[i].width &&
1665                     fival->height == webcam_sizes[i].height)
1666                         break;
1667         if (i == ARRAY_SIZE(webcam_sizes))
1668                 return -EINVAL;
1669         if (fival->index >= 2 * (3 - i))
1670                 return -EINVAL;
1671         fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1672         fival->discrete = webcam_intervals[fival->index];
1673         return 0;
1674 }
1675
1676 int vivid_vid_cap_g_parm(struct file *file, void *priv,
1677                           struct v4l2_streamparm *parm)
1678 {
1679         struct vivid_dev *dev = video_drvdata(file);
1680
1681         if (parm->type != (dev->multiplanar ?
1682                            V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1683                            V4L2_BUF_TYPE_VIDEO_CAPTURE))
1684                 return -EINVAL;
1685
1686         parm->parm.capture.capability   = V4L2_CAP_TIMEPERFRAME;
1687         parm->parm.capture.timeperframe = dev->timeperframe_vid_cap;
1688         parm->parm.capture.readbuffers  = 1;
1689         return 0;
1690 }
1691
1692 #define FRACT_CMP(a, OP, b)     \
1693         ((u64)(a).numerator * (b).denominator  OP  (u64)(b).numerator * (a).denominator)
1694
1695 int vivid_vid_cap_s_parm(struct file *file, void *priv,
1696                           struct v4l2_streamparm *parm)
1697 {
1698         struct vivid_dev *dev = video_drvdata(file);
1699         unsigned ival_sz = 2 * (3 - dev->webcam_size_idx);
1700         struct v4l2_fract tpf;
1701         unsigned i;
1702
1703         if (parm->type != (dev->multiplanar ?
1704                            V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1705                            V4L2_BUF_TYPE_VIDEO_CAPTURE))
1706                 return -EINVAL;
1707         if (!vivid_is_webcam(dev))
1708                 return vivid_vid_cap_g_parm(file, priv, parm);
1709
1710         tpf = parm->parm.capture.timeperframe;
1711
1712         if (tpf.denominator == 0)
1713                 tpf = webcam_intervals[ival_sz - 1];
1714         for (i = 0; i < ival_sz; i++)
1715                 if (FRACT_CMP(tpf, >=, webcam_intervals[i]))
1716                         break;
1717         if (i == ival_sz)
1718                 i = ival_sz - 1;
1719         dev->webcam_ival_idx = i;
1720         tpf = webcam_intervals[dev->webcam_ival_idx];
1721         tpf = FRACT_CMP(tpf, <, tpf_min) ? tpf_min : tpf;
1722         tpf = FRACT_CMP(tpf, >, tpf_max) ? tpf_max : tpf;
1723
1724         /* resync the thread's timings */
1725         dev->cap_seq_resync = true;
1726         dev->timeperframe_vid_cap = tpf;
1727         parm->parm.capture.timeperframe = tpf;
1728         parm->parm.capture.readbuffers  = 1;
1729         return 0;
1730 }