vivid-vid-cap.c

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * vivid-vid-cap.c - video capture support functions.
   4 *
   5 * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
   6 */
   7
   8#include <linux/errno.h>
   9#include <linux/kernel.h>
  10#include <linux/sched.h>
  11#include <linux/vmalloc.h>
  12#include <linux/videodev2.h>
  13#include <linux/prandom.h>
  14#include <linux/v4l2-dv-timings.h>
  15#include <media/v4l2-common.h>
  16#include <media/v4l2-event.h>
  17#include <media/v4l2-dv-timings.h>
  18#include <media/v4l2-rect.h>
  19
  20#include "vivid-core.h"
  21#include "vivid-vid-common.h"
  22#include "vivid-kthread-cap.h"
  23#include "vivid-vid-cap.h"
  24
  25/* Sizes must be in increasing order */
  26static const struct v4l2_frmsize_discrete webcam_sizes[] = {
  27	{  320, 180 },
  28	{  320, 240 },
  29	{  640, 360 },
  30	{  640, 480 },
  31	{ 1280, 720 },
  32	{ 1280, 960 },
  33	{ 1600, 1200 },
  34	{ 1920, 1080 },
  35	{ 3840, 2160 },
  36};
  37
  38/*
  39 * Intervals must be in increasing order.
  40 */
  41static const struct v4l2_fract webcam_intervals[] = {
  42	{  1, 1 },
  43	{  1, 2 },
  44	{  1, 4 },
  45	{  1, 5 },
  46	{  1, 10 },
  47	{  2, 25 },
  48	{  1, 15 }, /* 7 - maximum for 2160p */
  49	{  1, 25 },
  50	{  1, 30 }, /* 9 - maximum for 1080p */
  51	{  1, 40 },
  52	{  1, 50 },
  53	{  1, 60 }, /* 12 - maximum for 720p */
  54	{  1, 120 },
  55};
  56
  57/* Limit maximum FPS rates for high resolutions */
  58#define IVAL_COUNT_720P 12 /* 720p and up is limited to 60 fps */
  59#define IVAL_COUNT_1080P 9 /* 1080p and up is limited to 30 fps */
  60#define IVAL_COUNT_2160P 7 /* 2160p and up is limited to 15 fps */
  61
  62static inline unsigned int webcam_ival_count(const struct vivid_dev *dev,
  63					     unsigned int frmsize_idx)
  64{
  65	if (webcam_sizes[frmsize_idx].height >= 2160)
  66		return IVAL_COUNT_2160P;
  67
  68	if (webcam_sizes[frmsize_idx].height >= 1080)
  69		return IVAL_COUNT_1080P;
  70
  71	if (webcam_sizes[frmsize_idx].height >= 720)
  72		return IVAL_COUNT_720P;
  73
  74	/* For low resolutions, allow all FPS rates */
  75	return ARRAY_SIZE(webcam_intervals);
  76}
  77
  78static int vid_cap_queue_setup(struct vb2_queue *vq,
  79		       unsigned *nbuffers, unsigned *nplanes,
  80		       unsigned sizes[], struct device *alloc_devs[])
  81{
  82	struct vivid_dev *dev = vb2_get_drv_priv(vq);
  83	unsigned buffers = tpg_g_buffers(&dev->tpg);
  84	unsigned h = dev->fmt_cap_rect.height;
  85	unsigned p;
  86
  87	if (dev->field_cap == V4L2_FIELD_ALTERNATE) {
  88		/*
  89		 * You cannot use read() with FIELD_ALTERNATE since the field
  90		 * information (TOP/BOTTOM) cannot be passed back to the user.
  91		 */
  92		if (vb2_fileio_is_active(vq))
  93			return -EINVAL;
  94	}
  95
  96	if (dev->queue_setup_error) {
  97		/*
  98		 * Error injection: test what happens if queue_setup() returns
  99		 * an error.
 100		 */
 101		dev->queue_setup_error = false;
 102		return -EINVAL;
 103	}
 104	if (*nplanes) {
 105		/*
 106		 * Check if the number of requested planes match
 107		 * the number of buffers in the current format. You can't mix that.
 108		 */
 109		if (*nplanes != buffers)
 110			return -EINVAL;
 111		for (p = 0; p < buffers; p++) {
 112			if (sizes[p] < tpg_g_line_width(&dev->tpg, p) * h /
 113					dev->fmt_cap->vdownsampling[p] +
 114					dev->fmt_cap->data_offset[p])
 115				return -EINVAL;
 116		}
 117	} else {
 118		for (p = 0; p < buffers; p++)
 119			sizes[p] = (tpg_g_line_width(&dev->tpg, p) * h) /
 120					dev->fmt_cap->vdownsampling[p] +
 121					dev->fmt_cap->data_offset[p];
 122	}
 123
 124	*nplanes = buffers;
 125
 126	dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
 127	for (p = 0; p < buffers; p++)
 128		dprintk(dev, 1, "%s: size[%u]=%u\n", __func__, p, sizes[p]);
 129
 130	return 0;
 131}
 132
 133static int vid_cap_buf_prepare(struct vb2_buffer *vb)
 134{
 135	struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
 136	unsigned long size;
 137	unsigned buffers = tpg_g_buffers(&dev->tpg);
 138	unsigned p;
 139
 140	dprintk(dev, 1, "%s\n", __func__);
 141
 142	if (WARN_ON(NULL == dev->fmt_cap))
 143		return -EINVAL;
 144
 145	if (dev->buf_prepare_error) {
 146		/*
 147		 * Error injection: test what happens if buf_prepare() returns
 148		 * an error.
 149		 */
 150		dev->buf_prepare_error = false;
 151		return -EINVAL;
 152	}
 153	for (p = 0; p < buffers; p++) {
 154		size = (tpg_g_line_width(&dev->tpg, p) *
 155			dev->fmt_cap_rect.height) /
 156			dev->fmt_cap->vdownsampling[p] +
 157			dev->fmt_cap->data_offset[p];
 158
 159		if (vb2_plane_size(vb, p) < size) {
 160			dprintk(dev, 1, "%s data will not fit into plane %u (%lu < %lu)\n",
 161					__func__, p, vb2_plane_size(vb, p), size);
 162			return -EINVAL;
 163		}
 164
 165		vb2_set_plane_payload(vb, p, size);
 166		vb->planes[p].data_offset = dev->fmt_cap->data_offset[p];
 167	}
 168
 169	return 0;
 170}
 171
 172static void vid_cap_buf_finish(struct vb2_buffer *vb)
 173{
 174	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 175	struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
 176	struct v4l2_timecode *tc = &vbuf->timecode;
 177	unsigned fps = 25;
 178	unsigned seq = vbuf->sequence;
 179
 180	if (!vivid_is_sdtv_cap(dev))
 181		return;
 182
 183	/*
 184	 * Set the timecode. Rarely used, so it is interesting to
 185	 * test this.
 186	 */
 187	vbuf->flags |= V4L2_BUF_FLAG_TIMECODE;
 188	if (dev->std_cap[dev->input] & V4L2_STD_525_60)
 189		fps = 30;
 190	tc->type = (fps == 30) ? V4L2_TC_TYPE_30FPS : V4L2_TC_TYPE_25FPS;
 191	tc->flags = 0;
 192	tc->frames = seq % fps;
 193	tc->seconds = (seq / fps) % 60;
 194	tc->minutes = (seq / (60 * fps)) % 60;
 195	tc->hours = (seq / (60 * 60 * fps)) % 24;
 196}
 197
 198static void vid_cap_buf_queue(struct vb2_buffer *vb)
 199{
 200	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 201	struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
 202	struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb);
 203
 204	dprintk(dev, 1, "%s\n", __func__);
 205
 206	spin_lock(&dev->slock);
 207	list_add_tail(&buf->list, &dev->vid_cap_active);
 208	spin_unlock(&dev->slock);
 209}
 210
 211static int vid_cap_start_streaming(struct vb2_queue *vq, unsigned count)
 212{
 213	struct vivid_dev *dev = vb2_get_drv_priv(vq);
 214	unsigned i;
 215	int err;
 216
 217	dev->vid_cap_seq_count = 0;
 218	dprintk(dev, 1, "%s\n", __func__);
 219	for (i = 0; i < MAX_VID_CAP_BUFFERS; i++)
 220		dev->must_blank[i] = tpg_g_perc_fill(&dev->tpg) < 100;
 221	if (dev->start_streaming_error) {
 222		dev->start_streaming_error = false;
 223		err = -EINVAL;
 224	} else {
 225		err = vivid_start_generating_vid_cap(dev, &dev->vid_cap_streaming);
 226	}
 227	if (err) {
 228		struct vivid_buffer *buf, *tmp;
 229
 230		list_for_each_entry_safe(buf, tmp, &dev->vid_cap_active, list) {
 231			list_del(&buf->list);
 232			vb2_buffer_done(&buf->vb.vb2_buf,
 233					VB2_BUF_STATE_QUEUED);
 234		}
 235	}
 236	return err;
 237}
 238
 239/* abort streaming and wait for last buffer */
 240static void vid_cap_stop_streaming(struct vb2_queue *vq)
 241{
 242	struct vivid_dev *dev = vb2_get_drv_priv(vq);
 243
 244	dprintk(dev, 1, "%s\n", __func__);
 245	vivid_stop_generating_vid_cap(dev, &dev->vid_cap_streaming);
 246}
 247
 248static void vid_cap_buf_request_complete(struct vb2_buffer *vb)
 249{
 250	struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
 251
 252	v4l2_ctrl_request_complete(vb->req_obj.req, &dev->ctrl_hdl_vid_cap);
 253}
 254
 255const struct vb2_ops vivid_vid_cap_qops = {
 256	.queue_setup		= vid_cap_queue_setup,
 257	.buf_prepare		= vid_cap_buf_prepare,
 258	.buf_finish		= vid_cap_buf_finish,
 259	.buf_queue		= vid_cap_buf_queue,
 260	.start_streaming	= vid_cap_start_streaming,
 261	.stop_streaming		= vid_cap_stop_streaming,
 262	.buf_request_complete	= vid_cap_buf_request_complete,
 263};
 264
 265/*
 266 * Determine the 'picture' quality based on the current TV frequency: either
 267 * COLOR for a good 'signal', GRAY (grayscale picture) for a slightly off
 268 * signal or NOISE for no signal.
 269 */
 270void vivid_update_quality(struct vivid_dev *dev)
 271{
 272	unsigned freq_modulus;
 273
 274	if (dev->input_is_connected_to_output[dev->input]) {
 275		/*
 276		 * The 'noise' will only be replaced by the actual video
 277		 * if the output video matches the input video settings.
 278		 */
 279		tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
 280		return;
 281	}
 282	if (vivid_is_hdmi_cap(dev) &&
 283	    VIVID_INVALID_SIGNAL(dev->dv_timings_signal_mode[dev->input])) {
 284		tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
 285		return;
 286	}
 287	if (vivid_is_sdtv_cap(dev) &&
 288	    VIVID_INVALID_SIGNAL(dev->std_signal_mode[dev->input])) {
 289		tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
 290		return;
 291	}
 292	if (!vivid_is_tv_cap(dev)) {
 293		tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
 294		return;
 295	}
 296
 297	/*
 298	 * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
 299	 * From +/- 0.25 MHz around the channel there is color, and from
 300	 * +/- 1 MHz there is grayscale (chroma is lost).
 301	 * Everywhere else it is just noise.
 302	 */
 303	freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
 304	if (freq_modulus > 2 * 16) {
 305		struct rnd_state prng;
 306		prandom_seed_state(&prng, dev->tv_freq ^ 0x55);
 307		tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE,
 308			prandom_u32_state(&prng) & 0x3f);
 309		return;
 310	}
 311	if (freq_modulus < 12 /*0.75 * 16*/ || freq_modulus > 20 /*1.25 * 16*/)
 312		tpg_s_quality(&dev->tpg, TPG_QUAL_GRAY, 0);
 313	else
 314		tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
 315}
 316
 317/*
 318 * Get the current picture quality and the associated afc value.
 319 */
 320static enum tpg_quality vivid_get_quality(struct vivid_dev *dev, s32 *afc)
 321{
 322	unsigned freq_modulus;
 323
 324	if (afc)
 325		*afc = 0;
 326	if (tpg_g_quality(&dev->tpg) == TPG_QUAL_COLOR ||
 327	    tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE)
 328		return tpg_g_quality(&dev->tpg);
 329
 330	/*
 331	 * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
 332	 * From +/- 0.25 MHz around the channel there is color, and from
 333	 * +/- 1 MHz there is grayscale (chroma is lost).
 334	 * Everywhere else it is just gray.
 335	 */
 336	freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
 337	if (afc)
 338		*afc = freq_modulus - 1 * 16;
 339	return TPG_QUAL_GRAY;
 340}
 341
 342enum tpg_video_aspect vivid_get_video_aspect(const struct vivid_dev *dev)
 343{
 344	if (vivid_is_sdtv_cap(dev))
 345		return dev->std_aspect_ratio[dev->input];
 346
 347	if (vivid_is_hdmi_cap(dev))
 348		return dev->dv_timings_aspect_ratio[dev->input];
 349
 350	return TPG_VIDEO_ASPECT_IMAGE;
 351}
 352
 353static enum tpg_pixel_aspect vivid_get_pixel_aspect(const struct vivid_dev *dev)
 354{
 355	if (vivid_is_sdtv_cap(dev))
 356		return (dev->std_cap[dev->input] & V4L2_STD_525_60) ?
 357			TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
 358
 359	if (vivid_is_hdmi_cap(dev) &&
 360	    dev->src_rect.width == 720 && dev->src_rect.height <= 576)
 361		return dev->src_rect.height == 480 ?
 362			TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
 363
 364	return TPG_PIXEL_ASPECT_SQUARE;
 365}
 366
 367/*
 368 * Called whenever the format has to be reset which can occur when
 369 * changing inputs, standard, timings, etc.
 370 */
 371void vivid_update_format_cap(struct vivid_dev *dev, bool keep_controls)
 372{
 373	struct v4l2_bt_timings *bt = &dev->dv_timings_cap[dev->input].bt;
 374	u32 dims[V4L2_CTRL_MAX_DIMS] = {};
 375	unsigned size;
 376	u64 pixelclock;
 377
 378	switch (dev->input_type[dev->input]) {
 379	case WEBCAM:
 380	default:
 381		dev->src_rect.width = webcam_sizes[dev->webcam_size_idx].width;
 382		dev->src_rect.height = webcam_sizes[dev->webcam_size_idx].height;
 383		dev->timeperframe_vid_cap = webcam_intervals[dev->webcam_ival_idx];
 384		dev->field_cap = V4L2_FIELD_NONE;
 385		tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
 386		break;
 387	case TV:
 388	case SVID:
 389		dev->field_cap = dev->tv_field_cap;
 390		dev->src_rect.width = 720;
 391		if (dev->std_cap[dev->input] & V4L2_STD_525_60) {
 392			dev->src_rect.height = 480;
 393			dev->timeperframe_vid_cap = (struct v4l2_fract) { 1001, 30000 };
 394			dev->service_set_cap = V4L2_SLICED_CAPTION_525;
 395		} else {
 396			dev->src_rect.height = 576;
 397			dev->timeperframe_vid_cap = (struct v4l2_fract) { 1000, 25000 };
 398			dev->service_set_cap = V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
 399		}
 400		tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
 401		break;
 402	case HDMI:
 403		dev->src_rect.width = bt->width;
 404		dev->src_rect.height = bt->height;
 405		size = V4L2_DV_BT_FRAME_WIDTH(bt) * V4L2_DV_BT_FRAME_HEIGHT(bt);
 406		if (dev->reduced_fps && can_reduce_fps(bt)) {
 407			pixelclock = div_u64(bt->pixelclock * 1000, 1001);
 408			bt->flags |= V4L2_DV_FL_REDUCED_FPS;
 409		} else {
 410			pixelclock = bt->pixelclock;
 411			bt->flags &= ~V4L2_DV_FL_REDUCED_FPS;
 412		}
 413		dev->timeperframe_vid_cap = (struct v4l2_fract) {
 414			size / 100, (u32)pixelclock / 100
 415		};
 416		if (bt->interlaced)
 417			dev->field_cap = V4L2_FIELD_ALTERNATE;
 418		else
 419			dev->field_cap = V4L2_FIELD_NONE;
 420
 421		/*
 422		 * We can be called from within s_ctrl, in that case we can't
 423		 * set/get controls. Luckily we don't need to in that case.
 424		 */
 425		if (keep_controls || !dev->colorspace)
 426			break;
 427		if (bt->flags & V4L2_DV_FL_IS_CE_VIDEO) {
 428			if (bt->width == 720 && bt->height <= 576)
 429				v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
 430			else
 431				v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_709);
 432			v4l2_ctrl_s_ctrl(dev->real_rgb_range_cap, 1);
 433		} else {
 434			v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
 435			v4l2_ctrl_s_ctrl(dev->real_rgb_range_cap, 0);
 436		}
 437		tpg_s_rgb_range(&dev->tpg, v4l2_ctrl_g_ctrl(dev->rgb_range_cap));
 438		break;
 439	}
 440	vivid_update_quality(dev);
 441	tpg_reset_source(&dev->tpg, dev->src_rect.width, dev->src_rect.height, dev->field_cap);
 442	dev->crop_cap = dev->src_rect;
 443	dev->crop_bounds_cap = dev->src_rect;
 444	dev->compose_cap = dev->crop_cap;
 445	if (V4L2_FIELD_HAS_T_OR_B(dev->field_cap))
 446		dev->compose_cap.height /= 2;
 447	dev->fmt_cap_rect = dev->compose_cap;
 448	tpg_s_video_aspect(&dev->tpg, vivid_get_video_aspect(dev));
 449	tpg_s_pixel_aspect(&dev->tpg, vivid_get_pixel_aspect(dev));
 450	tpg_update_mv_step(&dev->tpg);
 451
 452	/*
 453	 * We can be called from within s_ctrl, in that case we can't
 454	 * modify controls. Luckily we don't need to in that case.
 455	 */
 456	if (keep_controls)
 457		return;
 458
 459	dims[0] = DIV_ROUND_UP(dev->src_rect.height, PIXEL_ARRAY_DIV);
 460	dims[1] = DIV_ROUND_UP(dev->src_rect.width, PIXEL_ARRAY_DIV);
 461	v4l2_ctrl_modify_dimensions(dev->pixel_array, dims);
 462}
 463
 464/* Map the field to something that is valid for the current input */
 465static enum v4l2_field vivid_field_cap(struct vivid_dev *dev, enum v4l2_field field)
 466{
 467	if (vivid_is_sdtv_cap(dev)) {
 468		switch (field) {
 469		case V4L2_FIELD_INTERLACED_TB:
 470		case V4L2_FIELD_INTERLACED_BT:
 471		case V4L2_FIELD_SEQ_TB:
 472		case V4L2_FIELD_SEQ_BT:
 473		case V4L2_FIELD_TOP:
 474		case V4L2_FIELD_BOTTOM:
 475		case V4L2_FIELD_ALTERNATE:
 476			return field;
 477		case V4L2_FIELD_INTERLACED:
 478		default:
 479			return V4L2_FIELD_INTERLACED;
 480		}
 481	}
 482	if (vivid_is_hdmi_cap(dev))
 483		return dev->dv_timings_cap[dev->input].bt.interlaced ?
 484			V4L2_FIELD_ALTERNATE : V4L2_FIELD_NONE;
 485	return V4L2_FIELD_NONE;
 486}
 487
 488static unsigned vivid_colorspace_cap(struct vivid_dev *dev)
 489{
 490	if (!vivid_input_is_connected_to(dev))
 491		return tpg_g_colorspace(&dev->tpg);
 492	return dev->colorspace_out;
 493}
 494
 495static unsigned vivid_xfer_func_cap(struct vivid_dev *dev)
 496{
 497	if (!vivid_input_is_connected_to(dev))
 498		return tpg_g_xfer_func(&dev->tpg);
 499	return dev->xfer_func_out;
 500}
 501
 502static unsigned vivid_ycbcr_enc_cap(struct vivid_dev *dev)
 503{
 504	if (!vivid_input_is_connected_to(dev))
 505		return tpg_g_ycbcr_enc(&dev->tpg);
 506	return dev->ycbcr_enc_out;
 507}
 508
 509static unsigned int vivid_hsv_enc_cap(struct vivid_dev *dev)
 510{
 511	if (!vivid_input_is_connected_to(dev))
 512		return tpg_g_hsv_enc(&dev->tpg);
 513	return dev->hsv_enc_out;
 514}
 515
 516static unsigned vivid_quantization_cap(struct vivid_dev *dev)
 517{
 518	if (!vivid_input_is_connected_to(dev))
 519		return tpg_g_quantization(&dev->tpg);
 520	return dev->quantization_out;
 521}
 522
 523int vivid_g_fmt_vid_cap(struct file *file, void *priv,
 524					struct v4l2_format *f)
 525{
 526	struct vivid_dev *dev = video_drvdata(file);
 527	struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
 528	unsigned p;
 529
 530	mp->width        = dev->fmt_cap_rect.width;
 531	mp->height       = dev->fmt_cap_rect.height;
 532	mp->field        = dev->field_cap;
 533	mp->pixelformat  = dev->fmt_cap->fourcc;
 534	mp->colorspace   = vivid_colorspace_cap(dev);
 535	mp->xfer_func    = vivid_xfer_func_cap(dev);
 536	if (dev->fmt_cap->color_enc == TGP_COLOR_ENC_HSV)
 537		mp->hsv_enc    = vivid_hsv_enc_cap(dev);
 538	else
 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->vdownsampling[p] +
 547			dev->fmt_cap->data_offset[p];
 548	}
 549	return 0;
 550}
 551
 552int vivid_try_fmt_vid_cap(struct file *file, void *priv,
 553			struct v4l2_format *f)
 554{
 555	struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
 556	struct v4l2_plane_pix_format *pfmt = mp->plane_fmt;
 557	struct vivid_dev *dev = video_drvdata(file);
 558	const struct vivid_fmt *fmt;
 559	unsigned bytesperline, max_bpl;
 560	unsigned factor = 1;
 561	unsigned w, h;
 562	unsigned p;
 563	bool user_set_csc = !!(mp->flags & V4L2_PIX_FMT_FLAG_SET_CSC);
 564
 565	fmt = vivid_get_format(dev, mp->pixelformat);
 566	if (!fmt) {
 567		dprintk(dev, 1, "Fourcc format (0x%08x) unknown.\n",
 568			mp->pixelformat);
 569		mp->pixelformat = V4L2_PIX_FMT_YUYV;
 570		fmt = vivid_get_format(dev, mp->pixelformat);
 571	}
 572
 573	mp->field = vivid_field_cap(dev, mp->field);
 574	if (vivid_is_webcam(dev)) {
 575		const struct v4l2_frmsize_discrete *sz =
 576			v4l2_find_nearest_size(webcam_sizes,
 577					       ARRAY_SIZE(webcam_sizes), width,
 578					       height, mp->width, mp->height);
 579
 580		w = sz->width;
 581		h = sz->height;
 582	} else if (vivid_is_sdtv_cap(dev)) {
 583		w = 720;
 584		h = (dev->std_cap[dev->input] & V4L2_STD_525_60) ? 480 : 576;
 585	} else {
 586		w = dev->src_rect.width;
 587		h = dev->src_rect.height;
 588	}
 589	if (V4L2_FIELD_HAS_T_OR_B(mp->field))
 590		factor = 2;
 591	if (vivid_is_webcam(dev) ||
 592	    (!dev->has_scaler_cap && !dev->has_crop_cap && !dev->has_compose_cap)) {
 593		mp->width = w;
 594		mp->height = h / factor;
 595	} else {
 596		struct v4l2_rect r = { 0, 0, mp->width, mp->height * factor };
 597
 598		v4l2_rect_set_min_size(&r, &vivid_min_rect);
 599		v4l2_rect_set_max_size(&r, &vivid_max_rect);
 600		if (dev->has_scaler_cap && !dev->has_compose_cap) {
 601			struct v4l2_rect max_r = { 0, 0, MAX_ZOOM * w, MAX_ZOOM * h };
 602
 603			v4l2_rect_set_max_size(&r, &max_r);
 604		} else if (!dev->has_scaler_cap && dev->has_crop_cap && !dev->has_compose_cap) {
 605			v4l2_rect_set_max_size(&r, &dev->src_rect);
 606		} else if (!dev->has_scaler_cap && !dev->has_crop_cap) {
 607			v4l2_rect_set_min_size(&r, &dev->src_rect);
 608		}
 609		mp->width = r.width;
 610		mp->height = r.height / factor;
 611	}
 612
 613	/* This driver supports custom bytesperline values */
 614
 615	mp->num_planes = fmt->buffers;
 616	for (p = 0; p < fmt->buffers; p++) {
 617		/* Calculate the minimum supported bytesperline value */
 618		bytesperline = (mp->width * fmt->bit_depth[p]) >> 3;
 619		/* Calculate the maximum supported bytesperline value */
 620		max_bpl = (MAX_ZOOM * MAX_WIDTH * fmt->bit_depth[p]) >> 3;
 621
 622		if (pfmt[p].bytesperline > max_bpl)
 623			pfmt[p].bytesperline = max_bpl;
 624		if (pfmt[p].bytesperline < bytesperline)
 625			pfmt[p].bytesperline = bytesperline;
 626
 627		pfmt[p].sizeimage = (pfmt[p].bytesperline * mp->height) /
 628				fmt->vdownsampling[p] + fmt->data_offset[p];
 629
 630		memset(pfmt[p].reserved, 0, sizeof(pfmt[p].reserved));
 631	}
 632	for (p = fmt->buffers; p < fmt->planes; p++)
 633		pfmt[0].sizeimage += (pfmt[0].bytesperline * mp->height *
 634			(fmt->bit_depth[p] / fmt->vdownsampling[p])) /
 635			(fmt->bit_depth[0] / fmt->vdownsampling[0]);
 636
 637	if (!user_set_csc || !v4l2_is_colorspace_valid(mp->colorspace))
 638		mp->colorspace = vivid_colorspace_cap(dev);
 639
 640	if (!user_set_csc || !v4l2_is_xfer_func_valid(mp->xfer_func))
 641		mp->xfer_func = vivid_xfer_func_cap(dev);
 642
 643	if (fmt->color_enc == TGP_COLOR_ENC_HSV) {
 644		if (!user_set_csc || !v4l2_is_hsv_enc_valid(mp->hsv_enc))
 645			mp->hsv_enc = vivid_hsv_enc_cap(dev);
 646	} else if (fmt->color_enc == TGP_COLOR_ENC_YCBCR) {
 647		if (!user_set_csc || !v4l2_is_ycbcr_enc_valid(mp->ycbcr_enc))
 648			mp->ycbcr_enc = vivid_ycbcr_enc_cap(dev);
 649	} else {
 650		mp->ycbcr_enc = vivid_ycbcr_enc_cap(dev);
 651	}
 652
 653	if (fmt->color_enc == TGP_COLOR_ENC_YCBCR ||
 654	    fmt->color_enc == TGP_COLOR_ENC_RGB) {
 655		if (!user_set_csc || !v4l2_is_quant_valid(mp->quantization))
 656			mp->quantization = vivid_quantization_cap(dev);
 657	} else {
 658		mp->quantization = vivid_quantization_cap(dev);
 659	}
 660
 661	memset(mp->reserved, 0, sizeof(mp->reserved));
 662	return 0;
 663}
 664
 665int vivid_s_fmt_vid_cap(struct file *file, void *priv,
 666					struct v4l2_format *f)
 667{
 668	struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
 669	struct vivid_dev *dev = video_drvdata(file);
 670	struct v4l2_rect *crop = &dev->crop_cap;
 671	struct v4l2_rect *compose = &dev->compose_cap;
 672	struct vb2_queue *q = &dev->vb_vid_cap_q;
 673	int ret = vivid_try_fmt_vid_cap(file, priv, f);
 674	unsigned factor = 1;
 675	unsigned p;
 676	unsigned i;
 677
 678	if (ret < 0)
 679		return ret;
 680
 681	if (vb2_is_busy(q)) {
 682		dprintk(dev, 1, "%s device busy\n", __func__);
 683		return -EBUSY;
 684	}
 685
 686	dev->fmt_cap = vivid_get_format(dev, mp->pixelformat);
 687	if (V4L2_FIELD_HAS_T_OR_B(mp->field))
 688		factor = 2;
 689
 690	/* Note: the webcam input doesn't support scaling, cropping or composing */
 691
 692	if (!vivid_is_webcam(dev) &&
 693	    (dev->has_scaler_cap || dev->has_crop_cap || dev->has_compose_cap)) {
 694		struct v4l2_rect r = { 0, 0, mp->width, mp->height };
 695
 696		if (dev->has_scaler_cap) {
 697			if (dev->has_compose_cap)
 698				v4l2_rect_map_inside(compose, &r);
 699			else
 700				*compose = r;
 701			if (dev->has_crop_cap && !dev->has_compose_cap) {
 702				struct v4l2_rect min_r = {
 703					0, 0,
 704					r.width / MAX_ZOOM,
 705					factor * r.height / MAX_ZOOM
 706				};
 707				struct v4l2_rect max_r = {
 708					0, 0,
 709					r.width * MAX_ZOOM,
 710					factor * r.height * MAX_ZOOM
 711				};
 712
 713				v4l2_rect_set_min_size(crop, &min_r);
 714				v4l2_rect_set_max_size(crop, &max_r);
 715				v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
 716			} else if (dev->has_crop_cap) {
 717				struct v4l2_rect min_r = {
 718					0, 0,
 719					compose->width / MAX_ZOOM,
 720					factor * compose->height / MAX_ZOOM
 721				};
 722				struct v4l2_rect max_r = {
 723					0, 0,
 724					compose->width * MAX_ZOOM,
 725					factor * compose->height * MAX_ZOOM
 726				};
 727
 728				v4l2_rect_set_min_size(crop, &min_r);
 729				v4l2_rect_set_max_size(crop, &max_r);
 730				v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
 731			}
 732		} else if (dev->has_crop_cap && !dev->has_compose_cap) {
 733			r.height *= factor;
 734			v4l2_rect_set_size_to(crop, &r);
 735			v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
 736			r = *crop;
 737			r.height /= factor;
 738			v4l2_rect_set_size_to(compose, &r);
 739		} else if (!dev->has_crop_cap) {
 740			v4l2_rect_map_inside(compose, &r);
 741		} else {
 742			r.height *= factor;
 743			v4l2_rect_set_max_size(crop, &r);
 744			v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
 745			compose->top *= factor;
 746			compose->height *= factor;
 747			v4l2_rect_set_size_to(compose, crop);
 748			v4l2_rect_map_inside(compose, &r);
 749			compose->top /= factor;
 750			compose->height /= factor;
 751		}
 752	} else if (vivid_is_webcam(dev)) {
 753		unsigned int ival_sz = webcam_ival_count(dev, dev->webcam_size_idx);
 754
 755		/* Guaranteed to be a match */
 756		for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
 757			if (webcam_sizes[i].width == mp->width &&
 758					webcam_sizes[i].height == mp->height)
 759				break;
 760		dev->webcam_size_idx = i;
 761		if (dev->webcam_ival_idx >= ival_sz)
 762			dev->webcam_ival_idx = ival_sz - 1;
 763		vivid_update_format_cap(dev, false);
 764	} else {
 765		struct v4l2_rect r = { 0, 0, mp->width, mp->height };
 766
 767		v4l2_rect_set_size_to(compose, &r);
 768		r.height *= factor;
 769		v4l2_rect_set_size_to(crop, &r);
 770	}
 771
 772	dev->fmt_cap_rect.width = mp->width;
 773	dev->fmt_cap_rect.height = mp->height;
 774	tpg_s_buf_height(&dev->tpg, mp->height);
 775	tpg_s_fourcc(&dev->tpg, dev->fmt_cap->fourcc);
 776	for (p = 0; p < tpg_g_buffers(&dev->tpg); p++)
 777		tpg_s_bytesperline(&dev->tpg, p, mp->plane_fmt[p].bytesperline);
 778	dev->field_cap = mp->field;
 779	if (dev->field_cap == V4L2_FIELD_ALTERNATE)
 780		tpg_s_field(&dev->tpg, V4L2_FIELD_TOP, true);
 781	else
 782		tpg_s_field(&dev->tpg, dev->field_cap, false);
 783	tpg_s_crop_compose(&dev->tpg, &dev->crop_cap, &dev->compose_cap);
 784	if (vivid_is_sdtv_cap(dev))
 785		dev->tv_field_cap = mp->field;
 786	tpg_update_mv_step(&dev->tpg);
 787	dev->tpg.colorspace = mp->colorspace;
 788	dev->tpg.xfer_func = mp->xfer_func;
 789	if (dev->fmt_cap->color_enc == TGP_COLOR_ENC_YCBCR)
 790		dev->tpg.ycbcr_enc = mp->ycbcr_enc;
 791	else
 792		dev->tpg.hsv_enc = mp->hsv_enc;
 793	dev->tpg.quantization = mp->quantization;
 794
 795	return 0;
 796}
 797
 798int vidioc_g_fmt_vid_cap_mplane(struct file *file, void *priv,
 799					struct v4l2_format *f)
 800{
 801	struct vivid_dev *dev = video_drvdata(file);
 802
 803	if (!dev->multiplanar)
 804		return -ENOTTY;
 805	return vivid_g_fmt_vid_cap(file, priv, f);
 806}
 807
 808int vidioc_try_fmt_vid_cap_mplane(struct file *file, void *priv,
 809			struct v4l2_format *f)
 810{
 811	struct vivid_dev *dev = video_drvdata(file);
 812
 813	if (!dev->multiplanar)
 814		return -ENOTTY;
 815	return vivid_try_fmt_vid_cap(file, priv, f);
 816}
 817
 818int vidioc_s_fmt_vid_cap_mplane(struct file *file, void *priv,
 819			struct v4l2_format *f)
 820{
 821	struct vivid_dev *dev = video_drvdata(file);
 822
 823	if (!dev->multiplanar)
 824		return -ENOTTY;
 825	return vivid_s_fmt_vid_cap(file, priv, f);
 826}
 827
 828int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 829					struct v4l2_format *f)
 830{
 831	struct vivid_dev *dev = video_drvdata(file);
 832
 833	if (dev->multiplanar)
 834		return -ENOTTY;
 835	return fmt_sp2mp_func(file, priv, f, vivid_g_fmt_vid_cap);
 836}
 837
 838int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 839			struct v4l2_format *f)
 840{
 841	struct vivid_dev *dev = video_drvdata(file);
 842
 843	if (dev->multiplanar)
 844		return -ENOTTY;
 845	return fmt_sp2mp_func(file, priv, f, vivid_try_fmt_vid_cap);
 846}
 847
 848int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 849			struct v4l2_format *f)
 850{
 851	struct vivid_dev *dev = video_drvdata(file);
 852
 853	if (dev->multiplanar)
 854		return -ENOTTY;
 855	return fmt_sp2mp_func(file, priv, f, vivid_s_fmt_vid_cap);
 856}
 857
 858int vivid_vid_cap_g_selection(struct file *file, void *priv,
 859			      struct v4l2_selection *sel)
 860{
 861	struct vivid_dev *dev = video_drvdata(file);
 862
 863	if (!dev->has_crop_cap && !dev->has_compose_cap)
 864		return -ENOTTY;
 865	if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 866		return -EINVAL;
 867	if (vivid_is_webcam(dev))
 868		return -ENODATA;
 869
 870	sel->r.left = sel->r.top = 0;
 871	switch (sel->target) {
 872	case V4L2_SEL_TGT_CROP:
 873		if (!dev->has_crop_cap)
 874			return -EINVAL;
 875		sel->r = dev->crop_cap;
 876		break;
 877	case V4L2_SEL_TGT_CROP_DEFAULT:
 878	case V4L2_SEL_TGT_CROP_BOUNDS:
 879		if (!dev->has_crop_cap)
 880			return -EINVAL;
 881		sel->r = dev->src_rect;
 882		break;
 883	case V4L2_SEL_TGT_COMPOSE_BOUNDS:
 884		if (!dev->has_compose_cap)
 885			return -EINVAL;
 886		sel->r = vivid_max_rect;
 887		break;
 888	case V4L2_SEL_TGT_COMPOSE:
 889		if (!dev->has_compose_cap)
 890			return -EINVAL;
 891		sel->r = dev->compose_cap;
 892		break;
 893	case V4L2_SEL_TGT_COMPOSE_DEFAULT:
 894		if (!dev->has_compose_cap)
 895			return -EINVAL;
 896		sel->r = dev->fmt_cap_rect;
 897		break;
 898	default:
 899		return -EINVAL;
 900	}
 901	return 0;
 902}
 903
 904int vivid_vid_cap_s_selection(struct file *file, void *priv, struct v4l2_selection *s)
 905{
 906	struct vivid_dev *dev = video_drvdata(file);
 907	struct v4l2_rect *crop = &dev->crop_cap;
 908	struct v4l2_rect *compose = &dev->compose_cap;
 909	unsigned factor = V4L2_FIELD_HAS_T_OR_B(dev->field_cap) ? 2 : 1;
 910	int ret;
 911
 912	if (!dev->has_crop_cap && !dev->has_compose_cap)
 913		return -ENOTTY;
 914	if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 915		return -EINVAL;
 916	if (vivid_is_webcam(dev))
 917		return -ENODATA;
 918
 919	switch (s->target) {
 920	case V4L2_SEL_TGT_CROP:
 921		if (!dev->has_crop_cap)
 922			return -EINVAL;
 923		ret = vivid_vid_adjust_sel(s->flags, &s->r);
 924		if (ret)
 925			return ret;
 926		v4l2_rect_set_min_size(&s->r, &vivid_min_rect);
 927		v4l2_rect_set_max_size(&s->r, &dev->src_rect);
 928		v4l2_rect_map_inside(&s->r, &dev->crop_bounds_cap);
 929		s->r.top /= factor;
 930		s->r.height /= factor;
 931		if (dev->has_scaler_cap) {
 932			struct v4l2_rect fmt = dev->fmt_cap_rect;
 933			struct v4l2_rect max_rect = {
 934				0, 0,
 935				s->r.width * MAX_ZOOM,
 936				s->r.height * MAX_ZOOM
 937			};
 938			struct v4l2_rect min_rect = {
 939				0, 0,
 940				s->r.width / MAX_ZOOM,
 941				s->r.height / MAX_ZOOM
 942			};
 943
 944			v4l2_rect_set_min_size(&fmt, &min_rect);
 945			if (!dev->has_compose_cap)
 946				v4l2_rect_set_max_size(&fmt, &max_rect);
 947			if (!v4l2_rect_same_size(&dev->fmt_cap_rect, &fmt) &&
 948			    vb2_is_busy(&dev->vb_vid_cap_q))
 949				return -EBUSY;
 950			if (dev->has_compose_cap) {
 951				v4l2_rect_set_min_size(compose, &min_rect);
 952				v4l2_rect_set_max_size(compose, &max_rect);
 953			}
 954			v4l2_rect_map_inside(compose, &fmt);
 955			dev->fmt_cap_rect = fmt;
 956			tpg_s_buf_height(&dev->tpg, fmt.height);
 957		} else if (dev->has_compose_cap) {
 958			struct v4l2_rect fmt = dev->fmt_cap_rect;
 959
 960			v4l2_rect_set_min_size(&fmt, &s->r);
 961			if (!v4l2_rect_same_size(&dev->fmt_cap_rect, &fmt) &&
 962			    vb2_is_busy(&dev->vb_vid_cap_q))
 963				return -EBUSY;
 964			dev->fmt_cap_rect = fmt;
 965			tpg_s_buf_height(&dev->tpg, fmt.height);
 966			v4l2_rect_set_size_to(compose, &s->r);
 967			v4l2_rect_map_inside(compose, &dev->fmt_cap_rect);
 968		} else {
 969			if (!v4l2_rect_same_size(&s->r, &dev->fmt_cap_rect) &&
 970			    vb2_is_busy(&dev->vb_vid_cap_q))
 971				return -EBUSY;
 972			v4l2_rect_set_size_to(&dev->fmt_cap_rect, &s->r);
 973			v4l2_rect_set_size_to(compose, &s->r);
 974			v4l2_rect_map_inside(compose, &dev->fmt_cap_rect);
 975			tpg_s_buf_height(&dev->tpg, dev->fmt_cap_rect.height);
 976		}
 977		s->r.top *= factor;
 978		s->r.height *= factor;
 979		*crop = s->r;
 980		break;
 981	case V4L2_SEL_TGT_COMPOSE:
 982		if (!dev->has_compose_cap)
 983			return -EINVAL;
 984		ret = vivid_vid_adjust_sel(s->flags, &s->r);
 985		if (ret)
 986			return ret;
 987		v4l2_rect_set_min_size(&s->r, &vivid_min_rect);
 988		v4l2_rect_set_max_size(&s->r, &dev->fmt_cap_rect);
 989		if (dev->has_scaler_cap) {
 990			struct v4l2_rect max_rect = {
 991				0, 0,
 992				dev->src_rect.width * MAX_ZOOM,
 993				(dev->src_rect.height / factor) * MAX_ZOOM
 994			};
 995
 996			v4l2_rect_set_max_size(&s->r, &max_rect);
 997			if (dev->has_crop_cap) {
 998				struct v4l2_rect min_rect = {
 999					0, 0,
1000					s->r.width / MAX_ZOOM,
1001					(s->r.height * factor) / MAX_ZOOM
1002				};
1003				struct v4l2_rect max_rect = {
1004					0, 0,
1005					s->r.width * MAX_ZOOM,
1006					(s->r.height * factor) * MAX_ZOOM
1007				};
1008
1009				v4l2_rect_set_min_size(crop, &min_rect);
1010				v4l2_rect_set_max_size(crop, &max_rect);
1011				v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
1012			}
1013		} else if (dev->has_crop_cap) {
1014			s->r.top *= factor;
1015			s->r.height *= factor;
1016			v4l2_rect_set_max_size(&s->r, &dev->src_rect);
1017			v4l2_rect_set_size_to(crop, &s->r);
1018			v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
1019			s->r.top /= factor;
1020			s->r.height /= factor;
1021		} else {
1022			v4l2_rect_set_size_to(&s->r, &dev->src_rect);
1023			s->r.height /= factor;
1024		}
1025		v4l2_rect_map_inside(&s->r, &dev->fmt_cap_rect);
1026		*compose = s->r;
1027		break;
1028	default:
1029		return -EINVAL;
1030	}
1031
1032	tpg_s_crop_compose(&dev->tpg, crop, compose);
1033	return 0;
1034}
1035
1036int vivid_vid_cap_g_pixelaspect(struct file *file, void *priv,
1037				int type, struct v4l2_fract *f)
1038{
1039	struct vivid_dev *dev = video_drvdata(file);
1040
1041	if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1042		return -EINVAL;
1043
1044	switch (vivid_get_pixel_aspect(dev)) {
1045	case TPG_PIXEL_ASPECT_NTSC:
1046		f->numerator = 11;
1047		f->denominator = 10;
1048		break;
1049	case TPG_PIXEL_ASPECT_PAL:
1050		f->numerator = 54;
1051		f->denominator = 59;
1052		break;
1053	default:
1054		break;
1055	}
1056	return 0;
1057}
1058
1059static const struct v4l2_audio vivid_audio_inputs[] = {
1060	{ 0, "TV", V4L2_AUDCAP_STEREO },
1061	{ 1, "Line-In", V4L2_AUDCAP_STEREO },
1062};
1063
1064int vidioc_enum_input(struct file *file, void *priv,
1065				struct v4l2_input *inp)
1066{
1067	struct vivid_dev *dev = video_drvdata(file);
1068
1069	if (inp->index >= dev->num_inputs)
1070		return -EINVAL;
1071
1072	inp->type = V4L2_INPUT_TYPE_CAMERA;
1073	switch (dev->input_type[inp->index]) {
1074	case WEBCAM:
1075		snprintf(inp->name, sizeof(inp->name), "Webcam %03u-%u",
1076			 dev->inst, dev->input_name_counter[inp->index]);
1077		inp->capabilities = 0;
1078		break;
1079	case TV:
1080		snprintf(inp->name, sizeof(inp->name), "TV %03u-%u",
1081			 dev->inst, dev->input_name_counter[inp->index]);
1082		inp->type = V4L2_INPUT_TYPE_TUNER;
1083		inp->std = V4L2_STD_ALL;
1084		if (dev->has_audio_inputs)
1085			inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1086		inp->capabilities = V4L2_IN_CAP_STD;
1087		break;
1088	case SVID:
1089		snprintf(inp->name, sizeof(inp->name), "S-Video %03u-%u",
1090			 dev->inst, dev->input_name_counter[inp->index]);
1091		inp->std = V4L2_STD_ALL;
1092		if (dev->has_audio_inputs)
1093			inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1094		inp->capabilities = V4L2_IN_CAP_STD;
1095		break;
1096	case HDMI:
1097		snprintf(inp->name, sizeof(inp->name), "HDMI %03u-%u",
1098			 dev->inst, dev->input_name_counter[inp->index]);
1099		inp->capabilities = V4L2_IN_CAP_DV_TIMINGS;
1100		if (dev->edid_blocks == 0 ||
1101		    dev->dv_timings_signal_mode[dev->input] == NO_SIGNAL)
1102			inp->status |= V4L2_IN_ST_NO_SIGNAL;
1103		else if (dev->dv_timings_signal_mode[dev->input] == NO_LOCK ||
1104			 dev->dv_timings_signal_mode[dev->input] == OUT_OF_RANGE)
1105			inp->status |= V4L2_IN_ST_NO_H_LOCK;
1106		break;
1107	}
1108	if (dev->sensor_hflip)
1109		inp->status |= V4L2_IN_ST_HFLIP;
1110	if (dev->sensor_vflip)
1111		inp->status |= V4L2_IN_ST_VFLIP;
1112	if (dev->input == inp->index && vivid_is_sdtv_cap(dev)) {
1113		if (dev->std_signal_mode[dev->input] == NO_SIGNAL) {
1114			inp->status |= V4L2_IN_ST_NO_SIGNAL;
1115		} else if (dev->std_signal_mode[dev->input] == NO_LOCK) {
1116			inp->status |= V4L2_IN_ST_NO_H_LOCK;
1117		} else if (vivid_is_tv_cap(dev)) {
1118			switch (tpg_g_quality(&dev->tpg)) {
1119			case TPG_QUAL_GRAY:
1120				inp->status |= V4L2_IN_ST_COLOR_KILL;
1121				break;
1122			case TPG_QUAL_NOISE:
1123				inp->status |= V4L2_IN_ST_NO_H_LOCK;
1124				break;
1125			default:
1126				break;
1127			}
1128		}
1129	}
1130	return 0;
1131}
1132
1133int vidioc_g_input(struct file *file, void *priv, unsigned *i)
1134{
1135	struct vivid_dev *dev = video_drvdata(file);
1136
1137	*i = dev->input;
1138	return 0;
1139}
1140
1141int vidioc_s_input(struct file *file, void *priv, unsigned i)
1142{
1143	struct vivid_dev *dev = video_drvdata(file);
1144	struct v4l2_bt_timings *bt = &dev->dv_timings_cap[dev->input].bt;
1145	unsigned brightness;
1146
1147	if (i >= dev->num_inputs)
1148		return -EINVAL;
1149
1150	if (i == dev->input)
1151		return 0;
1152
1153	if (vb2_is_busy(&dev->vb_vid_cap_q) ||
1154	    vb2_is_busy(&dev->vb_vbi_cap_q) ||
1155	    vb2_is_busy(&dev->vb_meta_cap_q))
1156		return -EBUSY;
1157
1158	dev->input = i;
1159	dev->vid_cap_dev.tvnorms = 0;
1160	if (dev->input_type[i] == TV || dev->input_type[i] == SVID) {
1161		dev->tv_audio_input = (dev->input_type[i] == TV) ? 0 : 1;
1162		dev->vid_cap_dev.tvnorms = V4L2_STD_ALL;
1163	}
1164	dev->vbi_cap_dev.tvnorms = dev->vid_cap_dev.tvnorms;
1165	dev->meta_cap_dev.tvnorms = dev->vid_cap_dev.tvnorms;
1166	vivid_update_format_cap(dev, false);
1167
1168	if (dev->colorspace) {
1169		switch (dev->input_type[i]) {
1170		case WEBCAM:
1171			v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
1172			break;
1173		case TV:
1174		case SVID:
1175			v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
1176			break;
1177		case HDMI:
1178			if (bt->flags & V4L2_DV_FL_IS_CE_VIDEO) {
1179				if (dev->src_rect.width == 720 && dev->src_rect.height <= 576)
1180					v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
1181				else
1182					v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_709);
1183			} else {
1184				v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
1185			}
1186			break;
1187		}
1188	}
1189
1190	/*
1191	 * Modify the brightness range depending on the input.
1192	 * This makes it easy to use vivid to test if applications can
1193	 * handle control range modifications and is also how this is
1194	 * typically used in practice as different inputs may be hooked
1195	 * up to different receivers with different control ranges.
1196	 */
1197	brightness = 128 * i + dev->input_brightness[i];
1198	v4l2_ctrl_modify_range(dev->brightness,
1199			128 * i, 255 + 128 * i, 1, 128 + 128 * i);
1200	v4l2_ctrl_s_ctrl(dev->brightness, brightness);
1201
1202	/* Restore per-input states. */
1203	v4l2_ctrl_activate(dev->ctrl_dv_timings_signal_mode,
1204			   vivid_is_hdmi_cap(dev));
1205	v4l2_ctrl_activate(dev->ctrl_dv_timings, vivid_is_hdmi_cap(dev) &&
1206			   dev->dv_timings_signal_mode[dev->input] ==
1207			   SELECTED_DV_TIMINGS);
1208	v4l2_ctrl_activate(dev->ctrl_std_signal_mode, vivid_is_sdtv_cap(dev));
1209	v4l2_ctrl_activate(dev->ctrl_standard, vivid_is_sdtv_cap(dev) &&
1210			   dev->std_signal_mode[dev->input]);
1211
1212	if (vivid_is_hdmi_cap(dev)) {
1213		v4l2_ctrl_s_ctrl(dev->ctrl_dv_timings_signal_mode,
1214				 dev->dv_timings_signal_mode[dev->input]);
1215		v4l2_ctrl_s_ctrl(dev->ctrl_dv_timings,
1216				 dev->query_dv_timings[dev->input]);
1217	} else if (vivid_is_sdtv_cap(dev)) {
1218		v4l2_ctrl_s_ctrl(dev->ctrl_std_signal_mode,
1219				 dev->std_signal_mode[dev->input]);
1220		v4l2_ctrl_s_ctrl(dev->ctrl_standard,
1221				 dev->std_signal_mode[dev->input]);
1222	}
1223
1224	return 0;
1225}
1226
1227int vidioc_enumaudio(struct file *file, void *priv, struct v4l2_audio *vin)
1228{
1229	if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1230		return -EINVAL;
1231	*vin = vivid_audio_inputs[vin->index];
1232	return 0;
1233}
1234
1235int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *vin)
1236{
1237	struct vivid_dev *dev = video_drvdata(file);
1238
1239	if (!vivid_is_sdtv_cap(dev))
1240		return -EINVAL;
1241	*vin = vivid_audio_inputs[dev->tv_audio_input];
1242	return 0;
1243}
1244
1245int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *vin)
1246{
1247	struct vivid_dev *dev = video_drvdata(file);
1248
1249	if (!vivid_is_sdtv_cap(dev))
1250		return -EINVAL;
1251	if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1252		return -EINVAL;
1253	dev->tv_audio_input = vin->index;
1254	return 0;
1255}
1256
1257int vivid_video_g_frequency(struct file *file, void *priv, struct v4l2_frequency *vf)
1258{
1259	struct vivid_dev *dev = video_drvdata(file);
1260
1261	if (vf->tuner != 0)
1262		return -EINVAL;
1263	vf->frequency = dev->tv_freq;
1264	return 0;
1265}
1266
1267int vivid_video_s_frequency(struct file *file, void *priv, const struct v4l2_frequency *vf)
1268{
1269	struct vivid_dev *dev = video_drvdata(file);
1270
1271	if (vf->tuner != 0)
1272		return -EINVAL;
1273	dev->tv_freq = clamp_t(unsigned, vf->frequency, MIN_TV_FREQ, MAX_TV_FREQ);
1274	if (vivid_is_tv_cap(dev))
1275		vivid_update_quality(dev);
1276	return 0;
1277}
1278
1279int vivid_video_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *vt)
1280{
1281	struct vivid_dev *dev = video_drvdata(file);
1282
1283	if (vt->index != 0)
1284		return -EINVAL;
1285	if (vt->audmode > V4L2_TUNER_MODE_LANG1_LANG2)
1286		return -EINVAL;
1287	dev->tv_audmode = vt->audmode;
1288	return 0;
1289}
1290
1291int vivid_video_g_tuner(struct file *file, void *priv, struct v4l2_tuner *vt)
1292{
1293	struct vivid_dev *dev = video_drvdata(file);
1294	enum tpg_quality qual;
1295
1296	if (vt->index != 0)
1297		return -EINVAL;
1298
1299	vt->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO |
1300			 V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
1301	vt->audmode = dev->tv_audmode;
1302	vt->rangelow = MIN_TV_FREQ;
1303	vt->rangehigh = MAX_TV_FREQ;
1304	qual = vivid_get_quality(dev, &vt->afc);
1305	if (qual == TPG_QUAL_COLOR)
1306		vt->signal = 0xffff;
1307	else if (qual == TPG_QUAL_GRAY)
1308		vt->signal = 0x8000;
1309	else
1310		vt->signal = 0;
1311	if (qual == TPG_QUAL_NOISE) {
1312		vt->rxsubchans = 0;
1313	} else if (qual == TPG_QUAL_GRAY) {
1314		vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1315	} else {
1316		unsigned int channel_nr = dev->tv_freq / (6 * 16);
1317		unsigned int options =
1318			(dev->std_cap[dev->input] & V4L2_STD_NTSC_M) ? 4 : 3;
1319
1320		switch (channel_nr % options) {
1321		case 0:
1322			vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1323			break;
1324		case 1:
1325			vt->rxsubchans = V4L2_TUNER_SUB_STEREO;
1326			break;
1327		case 2:
1328			if (dev->std_cap[dev->input] & V4L2_STD_NTSC_M)
1329				vt->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_SAP;
1330			else
1331				vt->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1332			break;
1333		case 3:
1334			vt->rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_SAP;
1335			break;
1336		}
1337	}
1338	strscpy(vt->name, "TV Tuner", sizeof(vt->name));
1339	return 0;
1340}
1341
1342/* Must remain in sync with the vivid_ctrl_standard_strings array */
1343const v4l2_std_id vivid_standard[] = {
1344	V4L2_STD_NTSC_M,
1345	V4L2_STD_NTSC_M_JP,
1346	V4L2_STD_NTSC_M_KR,
1347	V4L2_STD_NTSC_443,
1348	V4L2_STD_PAL_BG | V4L2_STD_PAL_H,
1349	V4L2_STD_PAL_I,
1350	V4L2_STD_PAL_DK,
1351	V4L2_STD_PAL_M,
1352	V4L2_STD_PAL_N,
1353	V4L2_STD_PAL_Nc,
1354	V4L2_STD_PAL_60,
1355	V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H,
1356	V4L2_STD_SECAM_DK,
1357	V4L2_STD_SECAM_L,
1358	V4L2_STD_SECAM_LC,
1359	V4L2_STD_UNKNOWN
1360};
1361
1362/* Must remain in sync with the vivid_standard array */
1363const char * const vivid_ctrl_standard_strings[] = {
1364	"NTSC-M",
1365	"NTSC-M-JP",
1366	"NTSC-M-KR",
1367	"NTSC-443",
1368	"PAL-BGH",
1369	"PAL-I",
1370	"PAL-DK",
1371	"PAL-M",
1372	"PAL-N",
1373	"PAL-Nc",
1374	"PAL-60",
1375	"SECAM-BGH",
1376	"SECAM-DK",
1377	"SECAM-L",
1378	"SECAM-Lc",
1379	NULL,
1380};
1381
1382int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *id)
1383{
1384	struct vivid_dev *dev = video_drvdata(file);
1385	unsigned int last = dev->query_std_last[dev->input];
1386
1387	if (!vivid_is_sdtv_cap(dev))
1388		return -ENODATA;
1389	if (dev->std_signal_mode[dev->input] == NO_SIGNAL ||
1390	    dev->std_signal_mode[dev->input] == NO_LOCK) {
1391		*id = V4L2_STD_UNKNOWN;
1392		return 0;
1393	}
1394	if (vivid_is_tv_cap(dev) && tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE) {
1395		*id = V4L2_STD_UNKNOWN;
1396	} else if (dev->std_signal_mode[dev->input] == CURRENT_STD) {
1397		*id = dev->std_cap[dev->input];
1398	} else if (dev->std_signal_mode[dev->input] == SELECTED_STD) {
1399		*id = dev->query_std[dev->input];
1400	} else {
1401		*id = vivid_standard[last];
1402		dev->query_std_last[dev->input] =
1403			(last + 1) % ARRAY_SIZE(vivid_standard);
1404	}
1405
1406	return 0;
1407}
1408
1409int vivid_vid_cap_s_std(struct file *file, void *priv, v4l2_std_id id)
1410{
1411	struct vivid_dev *dev = video_drvdata(file);
1412
1413	if (!vivid_is_sdtv_cap(dev))
1414		return -ENODATA;
1415	if (dev->std_cap[dev->input] == id)
1416		return 0;
1417	if (vb2_is_busy(&dev->vb_vid_cap_q) || vb2_is_busy(&dev->vb_vbi_cap_q))
1418		return -EBUSY;
1419	dev->std_cap[dev->input] = id;
1420	vivid_update_format_cap(dev, false);
1421	return 0;
1422}
1423
1424static void find_aspect_ratio(u32 width, u32 height,
1425			       u32 *num, u32 *denom)
1426{
1427	if (!(height % 3) && ((height * 4 / 3) == width)) {
1428		*num = 4;
1429		*denom = 3;
1430	} else if (!(height % 9) && ((height * 16 / 9) == width)) {
1431		*num = 16;
1432		*denom = 9;
1433	} else if (!(height % 10) && ((height * 16 / 10) == width)) {
1434		*num = 16;
1435		*denom = 10;
1436	} else if (!(height % 4) && ((height * 5 / 4) == width)) {
1437		*num = 5;
1438		*denom = 4;
1439	} else if (!(height % 9) && ((height * 15 / 9) == width)) {
1440		*num = 15;
1441		*denom = 9;
1442	} else { /* default to 16:9 */
1443		*num = 16;
1444		*denom = 9;
1445	}
1446}
1447
1448static bool valid_cvt_gtf_timings(struct v4l2_dv_timings *timings)
1449{
1450	struct v4l2_bt_timings *bt = &timings->bt;
1451	u32 total_h_pixel;
1452	u32 total_v_lines;
1453	u32 h_freq;
1454
1455	if (!v4l2_valid_dv_timings(timings, &vivid_dv_timings_cap,
1456				NULL, NULL))
1457		return false;
1458
1459	total_h_pixel = V4L2_DV_BT_FRAME_WIDTH(bt);
1460	total_v_lines = V4L2_DV_BT_FRAME_HEIGHT(bt);
1461
1462	h_freq = (u32)bt->pixelclock / total_h_pixel;
1463
1464	if (bt->standards == 0 || (bt->standards & V4L2_DV_BT_STD_CVT)) {
1465		struct v4l2_dv_timings cvt = {};
1466
1467		if (v4l2_detect_cvt(total_v_lines, h_freq, bt->vsync, bt->width,
1468				    bt->polarities, bt->interlaced,
1469				    &vivid_dv_timings_cap, &cvt) &&
1470		    cvt.bt.width == bt->width && cvt.bt.height == bt->height) {
1471			*timings = cvt;
1472			return true;
1473		}
1474	}
1475
1476	if (bt->standards == 0 || (bt->standards & V4L2_DV_BT_STD_GTF)) {
1477		struct v4l2_dv_timings gtf = {};
1478		struct v4l2_fract aspect_ratio;
1479
1480		find_aspect_ratio(bt->width, bt->height,
1481				  &aspect_ratio.numerator,
1482				  &aspect_ratio.denominator);
1483		if (v4l2_detect_gtf(total_v_lines, h_freq, bt->vsync,
1484				    bt->polarities, bt->interlaced,
1485				    aspect_ratio, &vivid_dv_timings_cap,
1486				    &gtf) &&
1487		    gtf.bt.width == bt->width && gtf.bt.height == bt->height) {
1488			*timings = gtf;
1489			return true;
1490		}
1491	}
1492	return false;
1493}
1494
1495int vivid_vid_cap_s_dv_timings(struct file *file, void *priv,
1496				    struct v4l2_dv_timings *timings)
1497{
1498	struct vivid_dev *dev = video_drvdata(file);
1499
1500	if (!vivid_is_hdmi_cap(dev))
1501		return -ENODATA;
1502	if (!v4l2_find_dv_timings_cap(timings, &vivid_dv_timings_cap,
1503				      0, NULL, NULL) &&
1504	    !valid_cvt_gtf_timings(timings))
1505		return -EINVAL;
1506
1507	if (v4l2_match_dv_timings(timings, &dev->dv_timings_cap[dev->input],
1508				  0, false))
1509		return 0;
1510	if (vb2_is_busy(&dev->vb_vid_cap_q))
1511		return -EBUSY;
1512
1513	dev->dv_timings_cap[dev->input] = *timings;
1514	vivid_update_format_cap(dev, false);
1515	return 0;
1516}
1517
1518int vidioc_query_dv_timings(struct file *file, void *priv,
1519				    struct v4l2_dv_timings *timings)
1520{
1521	struct vivid_dev *dev = video_drvdata(file);
1522	unsigned int input = dev->input;
1523	unsigned int last = dev->query_dv_timings_last[input];
1524
1525	if (!vivid_is_hdmi_cap(dev))
1526		return -ENODATA;
1527	if (dev->dv_timings_signal_mode[input] == NO_SIGNAL ||
1528	    dev->edid_blocks == 0)
1529		return -ENOLINK;
1530	if (dev->dv_timings_signal_mode[input] == NO_LOCK)
1531		return -ENOLCK;
1532	if (dev->dv_timings_signal_mode[input] == OUT_OF_RANGE) {
1533		timings->bt.pixelclock = vivid_dv_timings_cap.bt.max_pixelclock * 2;
1534		return -ERANGE;
1535	}
1536	if (dev->dv_timings_signal_mode[input] == CURRENT_DV_TIMINGS) {
1537		*timings = dev->dv_timings_cap[input];
1538	} else if (dev->dv_timings_signal_mode[input] ==
1539		   SELECTED_DV_TIMINGS) {
1540		*timings =
1541			v4l2_dv_timings_presets[dev->query_dv_timings[input]];
1542	} else {
1543		*timings =
1544			v4l2_dv_timings_presets[last];
1545		dev->query_dv_timings_last[input] =
1546			(last + 1) % dev->query_dv_timings_size;
1547	}
1548	return 0;
1549}
1550
1551void vivid_update_outputs(struct vivid_dev *dev)
1552{
1553	u32 edid_present = 0;
1554
1555	if (!dev || !dev->num_outputs)
1556		return;
1557	for (unsigned int i = 0, j = 0; i < dev->num_outputs; i++) {
1558		if (dev->output_type[i] != HDMI)
1559			continue;
1560
1561		struct vivid_dev *dev_rx = dev->output_to_input_instance[i];
1562
1563		if (dev_rx && dev_rx->edid_blocks)
1564			edid_present |= 1 << j;
1565		j++;
1566	}
1567	v4l2_ctrl_s_ctrl(dev->ctrl_tx_edid_present, edid_present);
1568	v4l2_ctrl_s_ctrl(dev->ctrl_tx_hotplug, edid_present);
1569	v4l2_ctrl_s_ctrl(dev->ctrl_tx_rxsense, edid_present);
1570}
1571
1572void vivid_update_connected_outputs(struct vivid_dev *dev)
1573{
1574	u16 phys_addr = cec_get_edid_phys_addr(dev->edid, dev->edid_blocks * 128, NULL);
1575
1576	for (unsigned int i = 0, j = 0; i < dev->num_inputs; i++) {
1577		unsigned int menu_idx =
1578			dev->input_is_connected_to_output[i];
1579
1580		if (dev->input_type[i] != HDMI)
1581			continue;
1582		j++;
1583		if (menu_idx < FIXED_MENU_ITEMS)
1584			continue;
1585
1586		struct vivid_dev *dev_tx = vivid_ctrl_hdmi_to_output_instance[menu_idx];
1587		unsigned int output = vivid_ctrl_hdmi_to_output_index[menu_idx];
1588
1589		if (!dev_tx)
1590			continue;
1591
1592		unsigned int hdmi_output = dev_tx->output_to_iface_index[output];
1593
1594		vivid_update_outputs(dev_tx);
1595		if (dev->edid_blocks) {
1596			cec_s_phys_addr(dev_tx->cec_tx_adap[hdmi_output],
1597					v4l2_phys_addr_for_input(phys_addr, j),
1598					false);
1599		} else {
1600			cec_phys_addr_invalidate(dev_tx->cec_tx_adap[hdmi_output]);
1601		}
1602	}
1603}
1604
1605int vidioc_s_edid(struct file *file, void *priv,
1606			 struct v4l2_edid *edid)
1607{
1608	struct vivid_dev *dev = video_drvdata(file);
1609	u16 phys_addr;
1610	int ret;
1611
1612	memset(edid->reserved, 0, sizeof(edid->reserved));
1613	if (edid->pad >= dev->num_inputs)
1614		return -EINVAL;
1615	if (dev->input_type[edid->pad] != HDMI || edid->start_block)
1616		return -EINVAL;
1617	if (edid->blocks == 0) {
1618		if (vb2_is_busy(&dev->vb_vid_cap_q))
1619			return -EBUSY;
1620		dev->edid_blocks = 0;
1621		vivid_update_connected_outputs(dev);
1622		return 0;
1623	}
1624	if (edid->blocks > dev->edid_max_blocks) {
1625		edid->blocks = dev->edid_max_blocks;
1626		return -E2BIG;
1627	}
1628	phys_addr = cec_get_edid_phys_addr(edid->edid, edid->blocks * 128, NULL);
1629	ret = v4l2_phys_addr_validate(phys_addr, &phys_addr, NULL);
1630	if (ret)
1631		return ret;
1632
1633	if (vb2_is_busy(&dev->vb_vid_cap_q))
1634		return -EBUSY;
1635
1636	dev->edid_blocks = edid->blocks;
1637	memcpy(dev->edid, edid->edid, edid->blocks * 128);
1638
1639	vivid_update_connected_outputs(dev);
1640	return 0;
1641}
1642
1643int vidioc_enum_framesizes(struct file *file, void *priv,
1644					 struct v4l2_frmsizeenum *fsize)
1645{
1646	struct vivid_dev *dev = video_drvdata(file);
1647
1648	if (!vivid_is_webcam(dev) && !dev->has_scaler_cap)
1649		return -EINVAL;
1650	if (vivid_get_format(dev, fsize->pixel_format) == NULL)
1651		return -EINVAL;
1652	if (vivid_is_webcam(dev)) {
1653		if (fsize->index >= ARRAY_SIZE(webcam_sizes))
1654			return -EINVAL;
1655		fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1656		fsize->discrete = webcam_sizes[fsize->index];
1657		return 0;
1658	}
1659	if (fsize->index)
1660		return -EINVAL;
1661	fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
1662	fsize->stepwise.min_width = MIN_WIDTH;
1663	fsize->stepwise.max_width = MAX_WIDTH * MAX_ZOOM;
1664	fsize->stepwise.step_width = 2;
1665	fsize->stepwise.min_height = MIN_HEIGHT;
1666	fsize->stepwise.max_height = MAX_HEIGHT * MAX_ZOOM;
1667	fsize->stepwise.step_height = 2;
1668	return 0;
1669}
1670
1671/* timeperframe is arbitrary and continuous */
1672int vidioc_enum_frameintervals(struct file *file, void *priv,
1673					     struct v4l2_frmivalenum *fival)
1674{
1675	struct vivid_dev *dev = video_drvdata(file);
1676	const struct vivid_fmt *fmt;
1677	int i;
1678
1679	fmt = vivid_get_format(dev, fival->pixel_format);
1680	if (!fmt)
1681		return -EINVAL;
1682
1683	if (!vivid_is_webcam(dev)) {
1684		if (fival->index)
1685			return -EINVAL;
1686		if (fival->width < MIN_WIDTH || fival->width > MAX_WIDTH * MAX_ZOOM)
1687			return -EINVAL;
1688		if (fival->height < MIN_HEIGHT || fival->height > MAX_HEIGHT * MAX_ZOOM)
1689			return -EINVAL;
1690		fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1691		fival->discrete = dev->timeperframe_vid_cap;
1692		return 0;
1693	}
1694
1695	for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
1696		if (fival->width == webcam_sizes[i].width &&
1697		    fival->height == webcam_sizes[i].height)
1698			break;
1699	if (i == ARRAY_SIZE(webcam_sizes))
1700		return -EINVAL;
1701	if (fival->index >= webcam_ival_count(dev, i))
1702		return -EINVAL;
1703	fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1704	fival->discrete = webcam_intervals[fival->index];
1705	return 0;
1706}
1707
1708int vivid_vid_cap_g_parm(struct file *file, void *priv,
1709			  struct v4l2_streamparm *parm)
1710{
1711	struct vivid_dev *dev = video_drvdata(file);
1712
1713	if (parm->type != (dev->multiplanar ?
1714			   V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1715			   V4L2_BUF_TYPE_VIDEO_CAPTURE))
1716		return -EINVAL;
1717
1718	parm->parm.capture.capability   = V4L2_CAP_TIMEPERFRAME;
1719	parm->parm.capture.timeperframe = dev->timeperframe_vid_cap;
1720	parm->parm.capture.readbuffers  = 1;
1721	return 0;
1722}
1723
1724int vivid_vid_cap_s_parm(struct file *file, void *priv,
1725			  struct v4l2_streamparm *parm)
1726{
1727	struct vivid_dev *dev = video_drvdata(file);
1728	unsigned int ival_sz = webcam_ival_count(dev, dev->webcam_size_idx);
1729	struct v4l2_fract tpf;
1730	unsigned i;
1731
1732	if (parm->type != (dev->multiplanar ?
1733			   V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1734			   V4L2_BUF_TYPE_VIDEO_CAPTURE))
1735		return -EINVAL;
1736	if (!vivid_is_webcam(dev))
1737		return vivid_vid_cap_g_parm(file, priv, parm);
1738
1739	tpf = parm->parm.capture.timeperframe;
1740
1741	if (tpf.denominator == 0)
1742		tpf = webcam_intervals[ival_sz - 1];
1743	for (i = 0; i < ival_sz; i++)
1744		if (V4L2_FRACT_COMPARE(tpf, >=, webcam_intervals[i]))
1745			break;
1746	if (i == ival_sz)
1747		i = ival_sz - 1;
1748	dev->webcam_ival_idx = i;
1749	tpf = webcam_intervals[dev->webcam_ival_idx];
1750
1751	/* resync the thread's timings */
1752	dev->cap_seq_resync = true;
1753	dev->timeperframe_vid_cap = tpf;
1754	parm->parm.capture.capability   = V4L2_CAP_TIMEPERFRAME;
1755	parm->parm.capture.timeperframe = tpf;
1756	parm->parm.capture.readbuffers  = 1;
1757	return 0;
1758}