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/v4l2-dv-timings.h>
14 #include <media/v4l2-common.h>
15 #include <media/v4l2-event.h>
16 #include <media/v4l2-dv-timings.h>
17 #include <media/v4l2-rect.h>
18 
19 #include "vivid-core.h"
20 #include "vivid-vid-common.h"
21 #include "vivid-kthread-cap.h"
22 #include "vivid-vid-cap.h"
23 
24 /* Sizes must be in increasing order */
25 static const struct v4l2_frmsize_discrete webcam_sizes[] = {
26 	{  320, 180 },
27 	{  640, 360 },
28 	{  640, 480 },
29 	{ 1280, 720 },
30 	{ 1920, 1080 },
31 	{ 3840, 2160 },
32 };
33 
34 /*
35  * Intervals must be in increasing order and there must be twice as many
36  * elements in this array as there are in webcam_sizes.
37  */
38 static const struct v4l2_fract webcam_intervals[] = {
39 	{  1, 1 },
40 	{  1, 2 },
41 	{  1, 4 },
42 	{  1, 5 },
43 	{  1, 10 },
44 	{  2, 25 },
45 	{  1, 15 }, /* 7 - maximum for 2160p */
46 	{  1, 25 },
47 	{  1, 30 }, /* 9 - maximum for 1080p */
48 	{  1, 40 },
49 	{  1, 50 },
50 	{  1, 60 }, /* 12 - maximum for 720p */
51 	{  1, 120 },
52 };
53 
54 /* Limit maximum FPS rates for high resolutions */
55 #define IVAL_COUNT_720P 12 /* 720p and up is limited to 60 fps */
56 #define IVAL_COUNT_1080P 9 /* 1080p and up is limited to 30 fps */
57 #define IVAL_COUNT_2160P 7 /* 2160p and up is limited to 15 fps */
58 
59 static inline unsigned int webcam_ival_count(const struct vivid_dev *dev,
60 					     unsigned int frmsize_idx)
61 {
62 	if (webcam_sizes[frmsize_idx].height >= 2160)
63 		return IVAL_COUNT_2160P;
64 
65 	if (webcam_sizes[frmsize_idx].height >= 1080)
66 		return IVAL_COUNT_1080P;
67 
68 	if (webcam_sizes[frmsize_idx].height >= 720)
69 		return IVAL_COUNT_720P;
70 
71 	/* For low resolutions, allow all FPS rates */
72 	return ARRAY_SIZE(webcam_intervals);
73 }
74 
75 static int vid_cap_queue_setup(struct vb2_queue *vq,
76 		       unsigned *nbuffers, unsigned *nplanes,
77 		       unsigned sizes[], struct device *alloc_devs[])
78 {
79 	struct vivid_dev *dev = vb2_get_drv_priv(vq);
80 	unsigned buffers = tpg_g_buffers(&dev->tpg);
81 	unsigned h = dev->fmt_cap_rect.height;
82 	unsigned p;
83 
84 	if (dev->field_cap == V4L2_FIELD_ALTERNATE) {
85 		/*
86 		 * You cannot use read() with FIELD_ALTERNATE since the field
87 		 * information (TOP/BOTTOM) cannot be passed back to the user.
88 		 */
89 		if (vb2_fileio_is_active(vq))
90 			return -EINVAL;
91 	}
92 
93 	if (dev->queue_setup_error) {
94 		/*
95 		 * Error injection: test what happens if queue_setup() returns
96 		 * an error.
97 		 */
98 		dev->queue_setup_error = false;
99 		return -EINVAL;
100 	}
101 	if (*nplanes) {
102 		/*
103 		 * Check if the number of requested planes match
104 		 * the number of buffers in the current format. You can't mix that.
105 		 */
106 		if (*nplanes != buffers)
107 			return -EINVAL;
108 		for (p = 0; p < buffers; p++) {
109 			if (sizes[p] < tpg_g_line_width(&dev->tpg, p) * h +
110 						dev->fmt_cap->data_offset[p])
111 				return -EINVAL;
112 		}
113 	} else {
114 		for (p = 0; p < buffers; p++)
115 			sizes[p] = (tpg_g_line_width(&dev->tpg, p) * h) /
116 					dev->fmt_cap->vdownsampling[p] +
117 					dev->fmt_cap->data_offset[p];
118 	}
119 
120 	if (vq->num_buffers + *nbuffers < 2)
121 		*nbuffers = 2 - vq->num_buffers;
122 
123 	*nplanes = buffers;
124 
125 	dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
126 	for (p = 0; p < buffers; p++)
127 		dprintk(dev, 1, "%s: size[%u]=%u\n", __func__, p, sizes[p]);
128 
129 	return 0;
130 }
131 
132 static int vid_cap_buf_prepare(struct vb2_buffer *vb)
133 {
134 	struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
135 	unsigned long size;
136 	unsigned buffers = tpg_g_buffers(&dev->tpg);
137 	unsigned p;
138 
139 	dprintk(dev, 1, "%s\n", __func__);
140 
141 	if (WARN_ON(NULL == dev->fmt_cap))
142 		return -EINVAL;
143 
144 	if (dev->buf_prepare_error) {
145 		/*
146 		 * Error injection: test what happens if buf_prepare() returns
147 		 * an error.
148 		 */
149 		dev->buf_prepare_error = false;
150 		return -EINVAL;
151 	}
152 	for (p = 0; p < buffers; p++) {
153 		size = (tpg_g_line_width(&dev->tpg, p) *
154 			dev->fmt_cap_rect.height) /
155 			dev->fmt_cap->vdownsampling[p] +
156 			dev->fmt_cap->data_offset[p];
157 
158 		if (vb2_plane_size(vb, p) < size) {
159 			dprintk(dev, 1, "%s data will not fit into plane %u (%lu < %lu)\n",
160 					__func__, p, vb2_plane_size(vb, p), size);
161 			return -EINVAL;
162 		}
163 
164 		vb2_set_plane_payload(vb, p, size);
165 		vb->planes[p].data_offset = dev->fmt_cap->data_offset[p];
166 	}
167 
168 	return 0;
169 }
170 
171 static void vid_cap_buf_finish(struct vb2_buffer *vb)
172 {
173 	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
174 	struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
175 	struct v4l2_timecode *tc = &vbuf->timecode;
176 	unsigned fps = 25;
177 	unsigned seq = vbuf->sequence;
178 
179 	if (!vivid_is_sdtv_cap(dev))
180 		return;
181 
182 	/*
183 	 * Set the timecode. Rarely used, so it is interesting to
184 	 * test this.
185 	 */
186 	vbuf->flags |= V4L2_BUF_FLAG_TIMECODE;
187 	if (dev->std_cap[dev->input] & V4L2_STD_525_60)
188 		fps = 30;
189 	tc->type = (fps == 30) ? V4L2_TC_TYPE_30FPS : V4L2_TC_TYPE_25FPS;
190 	tc->flags = 0;
191 	tc->frames = seq % fps;
192 	tc->seconds = (seq / fps) % 60;
193 	tc->minutes = (seq / (60 * fps)) % 60;
194 	tc->hours = (seq / (60 * 60 * fps)) % 24;
195 }
196 
197 static void vid_cap_buf_queue(struct vb2_buffer *vb)
198 {
199 	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
200 	struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
201 	struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb);
202 
203 	dprintk(dev, 1, "%s\n", __func__);
204 
205 	spin_lock(&dev->slock);
206 	list_add_tail(&buf->list, &dev->vid_cap_active);
207 	spin_unlock(&dev->slock);
208 }
209 
210 static int vid_cap_start_streaming(struct vb2_queue *vq, unsigned count)
211 {
212 	struct vivid_dev *dev = vb2_get_drv_priv(vq);
213 	unsigned i;
214 	int err;
215 
216 	if (vb2_is_streaming(&dev->vb_vid_out_q))
217 		dev->can_loop_video = vivid_vid_can_loop(dev);
218 
219 	dev->vid_cap_seq_count = 0;
220 	dprintk(dev, 1, "%s\n", __func__);
221 	for (i = 0; i < VIDEO_MAX_FRAME; i++)
222 		dev->must_blank[i] = tpg_g_perc_fill(&dev->tpg) < 100;
223 	if (dev->start_streaming_error) {
224 		dev->start_streaming_error = false;
225 		err = -EINVAL;
226 	} else {
227 		err = vivid_start_generating_vid_cap(dev, &dev->vid_cap_streaming);
228 	}
229 	if (err) {
230 		struct vivid_buffer *buf, *tmp;
231 
232 		list_for_each_entry_safe(buf, tmp, &dev->vid_cap_active, list) {
233 			list_del(&buf->list);
234 			vb2_buffer_done(&buf->vb.vb2_buf,
235 					VB2_BUF_STATE_QUEUED);
236 		}
237 	}
238 	return err;
239 }
240 
241 /* abort streaming and wait for last buffer */
242 static void vid_cap_stop_streaming(struct vb2_queue *vq)
243 {
244 	struct vivid_dev *dev = vb2_get_drv_priv(vq);
245 
246 	dprintk(dev, 1, "%s\n", __func__);
247 	vivid_stop_generating_vid_cap(dev, &dev->vid_cap_streaming);
248 	dev->can_loop_video = false;
249 }
250 
251 static void vid_cap_buf_request_complete(struct vb2_buffer *vb)
252 {
253 	struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
254 
255 	v4l2_ctrl_request_complete(vb->req_obj.req, &dev->ctrl_hdl_vid_cap);
256 }
257 
258 const struct vb2_ops vivid_vid_cap_qops = {
259 	.queue_setup		= vid_cap_queue_setup,
260 	.buf_prepare		= vid_cap_buf_prepare,
261 	.buf_finish		= vid_cap_buf_finish,
262 	.buf_queue		= vid_cap_buf_queue,
263 	.start_streaming	= vid_cap_start_streaming,
264 	.stop_streaming		= vid_cap_stop_streaming,
265 	.buf_request_complete	= vid_cap_buf_request_complete,
266 	.wait_prepare		= vb2_ops_wait_prepare,
267 	.wait_finish		= vb2_ops_wait_finish,
268 };
269 
270 /*
271  * Determine the 'picture' quality based on the current TV frequency: either
272  * COLOR for a good 'signal', GRAY (grayscale picture) for a slightly off
273  * signal or NOISE for no signal.
274  */
275 void vivid_update_quality(struct vivid_dev *dev)
276 {
277 	unsigned freq_modulus;
278 
279 	if (dev->loop_video && (vivid_is_svid_cap(dev) || vivid_is_hdmi_cap(dev))) {
280 		/*
281 		 * The 'noise' will only be replaced by the actual video
282 		 * if the output video matches the input video settings.
283 		 */
284 		tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
285 		return;
286 	}
287 	if (vivid_is_hdmi_cap(dev) &&
288 	    VIVID_INVALID_SIGNAL(dev->dv_timings_signal_mode[dev->input])) {
289 		tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
290 		return;
291 	}
292 	if (vivid_is_sdtv_cap(dev) &&
293 	    VIVID_INVALID_SIGNAL(dev->std_signal_mode[dev->input])) {
294 		tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
295 		return;
296 	}
297 	if (!vivid_is_tv_cap(dev)) {
298 		tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
299 		return;
300 	}
301 
302 	/*
303 	 * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
304 	 * From +/- 0.25 MHz around the channel there is color, and from
305 	 * +/- 1 MHz there is grayscale (chroma is lost).
306 	 * Everywhere else it is just noise.
307 	 */
308 	freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
309 	if (freq_modulus > 2 * 16) {
310 		tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE,
311 			next_pseudo_random32(dev->tv_freq ^ 0x55) & 0x3f);
312 		return;
313 	}
314 	if (freq_modulus < 12 /*0.75 * 16*/ || freq_modulus > 20 /*1.25 * 16*/)
315 		tpg_s_quality(&dev->tpg, TPG_QUAL_GRAY, 0);
316 	else
317 		tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
318 }
319 
320 /*
321  * Get the current picture quality and the associated afc value.
322  */
323 static enum tpg_quality vivid_get_quality(struct vivid_dev *dev, s32 *afc)
324 {
325 	unsigned freq_modulus;
326 
327 	if (afc)
328 		*afc = 0;
329 	if (tpg_g_quality(&dev->tpg) == TPG_QUAL_COLOR ||
330 	    tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE)
331 		return tpg_g_quality(&dev->tpg);
332 
333 	/*
334 	 * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
335 	 * From +/- 0.25 MHz around the channel there is color, and from
336 	 * +/- 1 MHz there is grayscale (chroma is lost).
337 	 * Everywhere else it is just gray.
338 	 */
339 	freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
340 	if (afc)
341 		*afc = freq_modulus - 1 * 16;
342 	return TPG_QUAL_GRAY;
343 }
344 
345 enum tpg_video_aspect vivid_get_video_aspect(const struct vivid_dev *dev)
346 {
347 	if (vivid_is_sdtv_cap(dev))
348 		return dev->std_aspect_ratio[dev->input];
349 
350 	if (vivid_is_hdmi_cap(dev))
351 		return dev->dv_timings_aspect_ratio[dev->input];
352 
353 	return TPG_VIDEO_ASPECT_IMAGE;
354 }
355 
356 static enum tpg_pixel_aspect vivid_get_pixel_aspect(const struct vivid_dev *dev)
357 {
358 	if (vivid_is_sdtv_cap(dev))
359 		return (dev->std_cap[dev->input] & V4L2_STD_525_60) ?
360 			TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
361 
362 	if (vivid_is_hdmi_cap(dev) &&
363 	    dev->src_rect.width == 720 && dev->src_rect.height <= 576)
364 		return dev->src_rect.height == 480 ?
365 			TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
366 
367 	return TPG_PIXEL_ASPECT_SQUARE;
368 }
369 
370 /*
371  * Called whenever the format has to be reset which can occur when
372  * changing inputs, standard, timings, etc.
373  */
374 void vivid_update_format_cap(struct vivid_dev *dev, bool keep_controls)
375 {
376 	struct v4l2_bt_timings *bt = &dev->dv_timings_cap[dev->input].bt;
377 	u32 dims[V4L2_CTRL_MAX_DIMS] = {};
378 	unsigned size;
379 	u64 pixelclock;
380 
381 	switch (dev->input_type[dev->input]) {
382 	case WEBCAM:
383 	default:
384 		dev->src_rect.width = webcam_sizes[dev->webcam_size_idx].width;
385 		dev->src_rect.height = webcam_sizes[dev->webcam_size_idx].height;
386 		dev->timeperframe_vid_cap = webcam_intervals[dev->webcam_ival_idx];
387 		dev->field_cap = V4L2_FIELD_NONE;
388 		tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
389 		break;
390 	case TV:
391 	case SVID:
392 		dev->field_cap = dev->tv_field_cap;
393 		dev->src_rect.width = 720;
394 		if (dev->std_cap[dev->input] & V4L2_STD_525_60) {
395 			dev->src_rect.height = 480;
396 			dev->timeperframe_vid_cap = (struct v4l2_fract) { 1001, 30000 };
397 			dev->service_set_cap = V4L2_SLICED_CAPTION_525;
398 		} else {
399 			dev->src_rect.height = 576;
400 			dev->timeperframe_vid_cap = (struct v4l2_fract) { 1000, 25000 };
401 			dev->service_set_cap = V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
402 		}
403 		tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
404 		break;
405 	case HDMI:
406 		dev->src_rect.width = bt->width;
407 		dev->src_rect.height = bt->height;
408 		size = V4L2_DV_BT_FRAME_WIDTH(bt) * V4L2_DV_BT_FRAME_HEIGHT(bt);
409 		if (dev->reduced_fps && can_reduce_fps(bt)) {
410 			pixelclock = div_u64(bt->pixelclock * 1000, 1001);
411 			bt->flags |= V4L2_DV_FL_REDUCED_FPS;
412 		} else {
413 			pixelclock = bt->pixelclock;
414 			bt->flags &= ~V4L2_DV_FL_REDUCED_FPS;
415 		}
416 		dev->timeperframe_vid_cap = (struct v4l2_fract) {
417 			size / 100, (u32)pixelclock / 100
418 		};
419 		if (bt->interlaced)
420 			dev->field_cap = V4L2_FIELD_ALTERNATE;
421 		else
422 			dev->field_cap = V4L2_FIELD_NONE;
423 
424 		/*
425 		 * We can be called from within s_ctrl, in that case we can't
426 		 * set/get controls. Luckily we don't need to in that case.
427 		 */
428 		if (keep_controls || !dev->colorspace)
429 			break;
430 		if (bt->flags & V4L2_DV_FL_IS_CE_VIDEO) {
431 			if (bt->width == 720 && bt->height <= 576)
432 				v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
433 			else
434 				v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_709);
435 			v4l2_ctrl_s_ctrl(dev->real_rgb_range_cap, 1);
436 		} else {
437 			v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
438 			v4l2_ctrl_s_ctrl(dev->real_rgb_range_cap, 0);
439 		}
440 		tpg_s_rgb_range(&dev->tpg, v4l2_ctrl_g_ctrl(dev->rgb_range_cap));
441 		break;
442 	}
443 	vivid_update_quality(dev);
444 	tpg_reset_source(&dev->tpg, dev->src_rect.width, dev->src_rect.height, dev->field_cap);
445 	dev->crop_cap = dev->src_rect;
446 	dev->crop_bounds_cap = dev->src_rect;
447 	dev->compose_cap = dev->crop_cap;
448 	if (V4L2_FIELD_HAS_T_OR_B(dev->field_cap))
449 		dev->compose_cap.height /= 2;
450 	dev->fmt_cap_rect = dev->compose_cap;
451 	tpg_s_video_aspect(&dev->tpg, vivid_get_video_aspect(dev));
452 	tpg_s_pixel_aspect(&dev->tpg, vivid_get_pixel_aspect(dev));
453 	tpg_update_mv_step(&dev->tpg);
454 
455 	/*
456 	 * We can be called from within s_ctrl, in that case we can't
457 	 * modify controls. Luckily we don't need to in that case.
458 	 */
459 	if (keep_controls)
460 		return;
461 
462 	dims[0] = roundup(dev->src_rect.width, PIXEL_ARRAY_DIV);
463 	dims[1] = roundup(dev->src_rect.height, PIXEL_ARRAY_DIV);
464 	v4l2_ctrl_modify_dimensions(dev->pixel_array, dims);
465 }
466 
467 /* Map the field to something that is valid for the current input */
468 static enum v4l2_field vivid_field_cap(struct vivid_dev *dev, enum v4l2_field field)
469 {
470 	if (vivid_is_sdtv_cap(dev)) {
471 		switch (field) {
472 		case V4L2_FIELD_INTERLACED_TB:
473 		case V4L2_FIELD_INTERLACED_BT:
474 		case V4L2_FIELD_SEQ_TB:
475 		case V4L2_FIELD_SEQ_BT:
476 		case V4L2_FIELD_TOP:
477 		case V4L2_FIELD_BOTTOM:
478 		case V4L2_FIELD_ALTERNATE:
479 			return field;
480 		case V4L2_FIELD_INTERLACED:
481 		default:
482 			return V4L2_FIELD_INTERLACED;
483 		}
484 	}
485 	if (vivid_is_hdmi_cap(dev))
486 		return dev->dv_timings_cap[dev->input].bt.interlaced ?
487 			V4L2_FIELD_ALTERNATE : V4L2_FIELD_NONE;
488 	return V4L2_FIELD_NONE;
489 }
490 
491 static unsigned vivid_colorspace_cap(struct vivid_dev *dev)
492 {
493 	if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
494 		return tpg_g_colorspace(&dev->tpg);
495 	return dev->colorspace_out;
496 }
497 
498 static unsigned vivid_xfer_func_cap(struct vivid_dev *dev)
499 {
500 	if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
501 		return tpg_g_xfer_func(&dev->tpg);
502 	return dev->xfer_func_out;
503 }
504 
505 static unsigned vivid_ycbcr_enc_cap(struct vivid_dev *dev)
506 {
507 	if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
508 		return tpg_g_ycbcr_enc(&dev->tpg);
509 	return dev->ycbcr_enc_out;
510 }
511 
512 static unsigned int vivid_hsv_enc_cap(struct vivid_dev *dev)
513 {
514 	if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
515 		return tpg_g_hsv_enc(&dev->tpg);
516 	return dev->hsv_enc_out;
517 }
518 
519 static unsigned vivid_quantization_cap(struct vivid_dev *dev)
520 {
521 	if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
522 		return tpg_g_quantization(&dev->tpg);
523 	return dev->quantization_out;
524 }
525 
526 int vivid_g_fmt_vid_cap(struct file *file, void *priv,
527 					struct v4l2_format *f)
528 {
529 	struct vivid_dev *dev = video_drvdata(file);
530 	struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
531 	unsigned p;
532 
533 	mp->width        = dev->fmt_cap_rect.width;
534 	mp->height       = dev->fmt_cap_rect.height;
535 	mp->field        = dev->field_cap;
536 	mp->pixelformat  = dev->fmt_cap->fourcc;
537 	mp->colorspace   = vivid_colorspace_cap(dev);
538 	mp->xfer_func    = vivid_xfer_func_cap(dev);
539 	if (dev->fmt_cap->color_enc == TGP_COLOR_ENC_HSV)
540 		mp->hsv_enc    = vivid_hsv_enc_cap(dev);
541 	else
542 		mp->ycbcr_enc    = vivid_ycbcr_enc_cap(dev);
543 	mp->quantization = vivid_quantization_cap(dev);
544 	mp->num_planes = dev->fmt_cap->buffers;
545 	for (p = 0; p < mp->num_planes; p++) {
546 		mp->plane_fmt[p].bytesperline = tpg_g_bytesperline(&dev->tpg, p);
547 		mp->plane_fmt[p].sizeimage =
548 			(tpg_g_line_width(&dev->tpg, p) * mp->height) /
549 			dev->fmt_cap->vdownsampling[p] +
550 			dev->fmt_cap->data_offset[p];
551 	}
552 	return 0;
553 }
554 
555 int vivid_try_fmt_vid_cap(struct file *file, void *priv,
556 			struct v4l2_format *f)
557 {
558 	struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
559 	struct v4l2_plane_pix_format *pfmt = mp->plane_fmt;
560 	struct vivid_dev *dev = video_drvdata(file);
561 	const struct vivid_fmt *fmt;
562 	unsigned bytesperline, max_bpl;
563 	unsigned factor = 1;
564 	unsigned w, h;
565 	unsigned p;
566 	bool user_set_csc = !!(mp->flags & V4L2_PIX_FMT_FLAG_SET_CSC);
567 
568 	fmt = vivid_get_format(dev, mp->pixelformat);
569 	if (!fmt) {
570 		dprintk(dev, 1, "Fourcc format (0x%08x) unknown.\n",
571 			mp->pixelformat);
572 		mp->pixelformat = V4L2_PIX_FMT_YUYV;
573 		fmt = vivid_get_format(dev, mp->pixelformat);
574 	}
575 
576 	mp->field = vivid_field_cap(dev, mp->field);
577 	if (vivid_is_webcam(dev)) {
578 		const struct v4l2_frmsize_discrete *sz =
579 			v4l2_find_nearest_size(webcam_sizes,
580 					       ARRAY_SIZE(webcam_sizes), width,
581 					       height, mp->width, mp->height);
582 
583 		w = sz->width;
584 		h = sz->height;
585 	} else if (vivid_is_sdtv_cap(dev)) {
586 		w = 720;
587 		h = (dev->std_cap[dev->input] & V4L2_STD_525_60) ? 480 : 576;
588 	} else {
589 		w = dev->src_rect.width;
590 		h = dev->src_rect.height;
591 	}
592 	if (V4L2_FIELD_HAS_T_OR_B(mp->field))
593 		factor = 2;
594 	if (vivid_is_webcam(dev) ||
595 	    (!dev->has_scaler_cap && !dev->has_crop_cap && !dev->has_compose_cap)) {
596 		mp->width = w;
597 		mp->height = h / factor;
598 	} else {
599 		struct v4l2_rect r = { 0, 0, mp->width, mp->height * factor };
600 
601 		v4l2_rect_set_min_size(&r, &vivid_min_rect);
602 		v4l2_rect_set_max_size(&r, &vivid_max_rect);
603 		if (dev->has_scaler_cap && !dev->has_compose_cap) {
604 			struct v4l2_rect max_r = { 0, 0, MAX_ZOOM * w, MAX_ZOOM * h };
605 
606 			v4l2_rect_set_max_size(&r, &max_r);
607 		} else if (!dev->has_scaler_cap && dev->has_crop_cap && !dev->has_compose_cap) {
608 			v4l2_rect_set_max_size(&r, &dev->src_rect);
609 		} else if (!dev->has_scaler_cap && !dev->has_crop_cap) {
610 			v4l2_rect_set_min_size(&r, &dev->src_rect);
611 		}
612 		mp->width = r.width;
613 		mp->height = r.height / factor;
614 	}
615 
616 	/* This driver supports custom bytesperline values */
617 
618 	mp->num_planes = fmt->buffers;
619 	for (p = 0; p < fmt->buffers; p++) {
620 		/* Calculate the minimum supported bytesperline value */
621 		bytesperline = (mp->width * fmt->bit_depth[p]) >> 3;
622 		/* Calculate the maximum supported bytesperline value */
623 		max_bpl = (MAX_ZOOM * MAX_WIDTH * fmt->bit_depth[p]) >> 3;
624 
625 		if (pfmt[p].bytesperline > max_bpl)
626 			pfmt[p].bytesperline = max_bpl;
627 		if (pfmt[p].bytesperline < bytesperline)
628 			pfmt[p].bytesperline = bytesperline;
629 
630 		pfmt[p].sizeimage = (pfmt[p].bytesperline * mp->height) /
631 				fmt->vdownsampling[p] + fmt->data_offset[p];
632 
633 		memset(pfmt[p].reserved, 0, sizeof(pfmt[p].reserved));
634 	}
635 	for (p = fmt->buffers; p < fmt->planes; p++)
636 		pfmt[0].sizeimage += (pfmt[0].bytesperline * mp->height *
637 			(fmt->bit_depth[p] / fmt->vdownsampling[p])) /
638 			(fmt->bit_depth[0] / fmt->vdownsampling[0]);
639 
640 	if (!user_set_csc || !v4l2_is_colorspace_valid(mp->colorspace))
641 		mp->colorspace = vivid_colorspace_cap(dev);
642 
643 	if (!user_set_csc || !v4l2_is_xfer_func_valid(mp->xfer_func))
644 		mp->xfer_func = vivid_xfer_func_cap(dev);
645 
646 	if (fmt->color_enc == TGP_COLOR_ENC_HSV) {
647 		if (!user_set_csc || !v4l2_is_hsv_enc_valid(mp->hsv_enc))
648 			mp->hsv_enc = vivid_hsv_enc_cap(dev);
649 	} else if (fmt->color_enc == TGP_COLOR_ENC_YCBCR) {
650 		if (!user_set_csc || !v4l2_is_ycbcr_enc_valid(mp->ycbcr_enc))
651 			mp->ycbcr_enc = vivid_ycbcr_enc_cap(dev);
652 	} else {
653 		mp->ycbcr_enc = vivid_ycbcr_enc_cap(dev);
654 	}
655 
656 	if (fmt->color_enc == TGP_COLOR_ENC_YCBCR ||
657 	    fmt->color_enc == TGP_COLOR_ENC_RGB) {
658 		if (!user_set_csc || !v4l2_is_quant_valid(mp->quantization))
659 			mp->quantization = vivid_quantization_cap(dev);
660 	} else {
661 		mp->quantization = vivid_quantization_cap(dev);
662 	}
663 
664 	memset(mp->reserved, 0, sizeof(mp->reserved));
665 	return 0;
666 }
667 
668 int vivid_s_fmt_vid_cap(struct file *file, void *priv,
669 					struct v4l2_format *f)
670 {
671 	struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
672 	struct vivid_dev *dev = video_drvdata(file);
673 	struct v4l2_rect *crop = &dev->crop_cap;
674 	struct v4l2_rect *compose = &dev->compose_cap;
675 	struct vb2_queue *q = &dev->vb_vid_cap_q;
676 	int ret = vivid_try_fmt_vid_cap(file, priv, f);
677 	unsigned factor = 1;
678 	unsigned p;
679 	unsigned i;
680 
681 	if (ret < 0)
682 		return ret;
683 
684 	if (vb2_is_busy(q)) {
685 		dprintk(dev, 1, "%s device busy\n", __func__);
686 		return -EBUSY;
687 	}
688 
689 	dev->fmt_cap = vivid_get_format(dev, mp->pixelformat);
690 	if (V4L2_FIELD_HAS_T_OR_B(mp->field))
691 		factor = 2;
692 
693 	/* Note: the webcam input doesn't support scaling, cropping or composing */
694 
695 	if (!vivid_is_webcam(dev) &&
696 	    (dev->has_scaler_cap || dev->has_crop_cap || dev->has_compose_cap)) {
697 		struct v4l2_rect r = { 0, 0, mp->width, mp->height };
698 
699 		if (dev->has_scaler_cap) {
700 			if (dev->has_compose_cap)
701 				v4l2_rect_map_inside(compose, &r);
702 			else
703 				*compose = r;
704 			if (dev->has_crop_cap && !dev->has_compose_cap) {
705 				struct v4l2_rect min_r = {
706 					0, 0,
707 					r.width / MAX_ZOOM,
708 					factor * r.height / MAX_ZOOM
709 				};
710 				struct v4l2_rect max_r = {
711 					0, 0,
712 					r.width * MAX_ZOOM,
713 					factor * r.height * MAX_ZOOM
714 				};
715 
716 				v4l2_rect_set_min_size(crop, &min_r);
717 				v4l2_rect_set_max_size(crop, &max_r);
718 				v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
719 			} else if (dev->has_crop_cap) {
720 				struct v4l2_rect min_r = {
721 					0, 0,
722 					compose->width / MAX_ZOOM,
723 					factor * compose->height / MAX_ZOOM
724 				};
725 				struct v4l2_rect max_r = {
726 					0, 0,
727 					compose->width * MAX_ZOOM,
728 					factor * compose->height * MAX_ZOOM
729 				};
730 
731 				v4l2_rect_set_min_size(crop, &min_r);
732 				v4l2_rect_set_max_size(crop, &max_r);
733 				v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
734 			}
735 		} else if (dev->has_crop_cap && !dev->has_compose_cap) {
736 			r.height *= factor;
737 			v4l2_rect_set_size_to(crop, &r);
738 			v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
739 			r = *crop;
740 			r.height /= factor;
741 			v4l2_rect_set_size_to(compose, &r);
742 		} else if (!dev->has_crop_cap) {
743 			v4l2_rect_map_inside(compose, &r);
744 		} else {
745 			r.height *= factor;
746 			v4l2_rect_set_max_size(crop, &r);
747 			v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
748 			compose->top *= factor;
749 			compose->height *= factor;
750 			v4l2_rect_set_size_to(compose, crop);
751 			v4l2_rect_map_inside(compose, &r);
752 			compose->top /= factor;
753 			compose->height /= factor;
754 		}
755 	} else if (vivid_is_webcam(dev)) {
756 		unsigned int ival_sz = webcam_ival_count(dev, dev->webcam_size_idx);
757 
758 		/* Guaranteed to be a match */
759 		for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
760 			if (webcam_sizes[i].width == mp->width &&
761 					webcam_sizes[i].height == mp->height)
762 				break;
763 		dev->webcam_size_idx = i;
764 		if (dev->webcam_ival_idx >= ival_sz)
765 			dev->webcam_ival_idx = ival_sz - 1;
766 		vivid_update_format_cap(dev, false);
767 	} else {
768 		struct v4l2_rect r = { 0, 0, mp->width, mp->height };
769 
770 		v4l2_rect_set_size_to(compose, &r);
771 		r.height *= factor;
772 		v4l2_rect_set_size_to(crop, &r);
773 	}
774 
775 	dev->fmt_cap_rect.width = mp->width;
776 	dev->fmt_cap_rect.height = mp->height;
777 	tpg_s_buf_height(&dev->tpg, mp->height);
778 	tpg_s_fourcc(&dev->tpg, dev->fmt_cap->fourcc);
779 	for (p = 0; p < tpg_g_buffers(&dev->tpg); p++)
780 		tpg_s_bytesperline(&dev->tpg, p, mp->plane_fmt[p].bytesperline);
781 	dev->field_cap = mp->field;
782 	if (dev->field_cap == V4L2_FIELD_ALTERNATE)
783 		tpg_s_field(&dev->tpg, V4L2_FIELD_TOP, true);
784 	else
785 		tpg_s_field(&dev->tpg, dev->field_cap, false);
786 	tpg_s_crop_compose(&dev->tpg, &dev->crop_cap, &dev->compose_cap);
787 	if (vivid_is_sdtv_cap(dev))
788 		dev->tv_field_cap = mp->field;
789 	tpg_update_mv_step(&dev->tpg);
790 	dev->tpg.colorspace = mp->colorspace;
791 	dev->tpg.xfer_func = mp->xfer_func;
792 	if (dev->fmt_cap->color_enc == TGP_COLOR_ENC_YCBCR)
793 		dev->tpg.ycbcr_enc = mp->ycbcr_enc;
794 	else
795 		dev->tpg.hsv_enc = mp->hsv_enc;
796 	dev->tpg.quantization = mp->quantization;
797 
798 	return 0;
799 }
800 
801 int vidioc_g_fmt_vid_cap_mplane(struct file *file, void *priv,
802 					struct v4l2_format *f)
803 {
804 	struct vivid_dev *dev = video_drvdata(file);
805 
806 	if (!dev->multiplanar)
807 		return -ENOTTY;
808 	return vivid_g_fmt_vid_cap(file, priv, f);
809 }
810 
811 int vidioc_try_fmt_vid_cap_mplane(struct file *file, void *priv,
812 			struct v4l2_format *f)
813 {
814 	struct vivid_dev *dev = video_drvdata(file);
815 
816 	if (!dev->multiplanar)
817 		return -ENOTTY;
818 	return vivid_try_fmt_vid_cap(file, priv, f);
819 }
820 
821 int vidioc_s_fmt_vid_cap_mplane(struct file *file, void *priv,
822 			struct v4l2_format *f)
823 {
824 	struct vivid_dev *dev = video_drvdata(file);
825 
826 	if (!dev->multiplanar)
827 		return -ENOTTY;
828 	return vivid_s_fmt_vid_cap(file, priv, f);
829 }
830 
831 int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
832 					struct v4l2_format *f)
833 {
834 	struct vivid_dev *dev = video_drvdata(file);
835 
836 	if (dev->multiplanar)
837 		return -ENOTTY;
838 	return fmt_sp2mp_func(file, priv, f, vivid_g_fmt_vid_cap);
839 }
840 
841 int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
842 			struct v4l2_format *f)
843 {
844 	struct vivid_dev *dev = video_drvdata(file);
845 
846 	if (dev->multiplanar)
847 		return -ENOTTY;
848 	return fmt_sp2mp_func(file, priv, f, vivid_try_fmt_vid_cap);
849 }
850 
851 int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
852 			struct v4l2_format *f)
853 {
854 	struct vivid_dev *dev = video_drvdata(file);
855 
856 	if (dev->multiplanar)
857 		return -ENOTTY;
858 	return fmt_sp2mp_func(file, priv, f, vivid_s_fmt_vid_cap);
859 }
860 
861 int vivid_vid_cap_g_selection(struct file *file, void *priv,
862 			      struct v4l2_selection *sel)
863 {
864 	struct vivid_dev *dev = video_drvdata(file);
865 
866 	if (!dev->has_crop_cap && !dev->has_compose_cap)
867 		return -ENOTTY;
868 	if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
869 		return -EINVAL;
870 	if (vivid_is_webcam(dev))
871 		return -ENODATA;
872 
873 	sel->r.left = sel->r.top = 0;
874 	switch (sel->target) {
875 	case V4L2_SEL_TGT_CROP:
876 		if (!dev->has_crop_cap)
877 			return -EINVAL;
878 		sel->r = dev->crop_cap;
879 		break;
880 	case V4L2_SEL_TGT_CROP_DEFAULT:
881 	case V4L2_SEL_TGT_CROP_BOUNDS:
882 		if (!dev->has_crop_cap)
883 			return -EINVAL;
884 		sel->r = dev->src_rect;
885 		break;
886 	case V4L2_SEL_TGT_COMPOSE_BOUNDS:
887 		if (!dev->has_compose_cap)
888 			return -EINVAL;
889 		sel->r = vivid_max_rect;
890 		break;
891 	case V4L2_SEL_TGT_COMPOSE:
892 		if (!dev->has_compose_cap)
893 			return -EINVAL;
894 		sel->r = dev->compose_cap;
895 		break;
896 	case V4L2_SEL_TGT_COMPOSE_DEFAULT:
897 		if (!dev->has_compose_cap)
898 			return -EINVAL;
899 		sel->r = dev->fmt_cap_rect;
900 		break;
901 	default:
902 		return -EINVAL;
903 	}
904 	return 0;
905 }
906 
907 int vivid_vid_cap_s_selection(struct file *file, void *fh, struct v4l2_selection *s)
908 {
909 	struct vivid_dev *dev = video_drvdata(file);
910 	struct v4l2_rect *crop = &dev->crop_cap;
911 	struct v4l2_rect *compose = &dev->compose_cap;
912 	unsigned factor = V4L2_FIELD_HAS_T_OR_B(dev->field_cap) ? 2 : 1;
913 	int ret;
914 
915 	if (!dev->has_crop_cap && !dev->has_compose_cap)
916 		return -ENOTTY;
917 	if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
918 		return -EINVAL;
919 	if (vivid_is_webcam(dev))
920 		return -ENODATA;
921 
922 	switch (s->target) {
923 	case V4L2_SEL_TGT_CROP:
924 		if (!dev->has_crop_cap)
925 			return -EINVAL;
926 		ret = vivid_vid_adjust_sel(s->flags, &s->r);
927 		if (ret)
928 			return ret;
929 		v4l2_rect_set_min_size(&s->r, &vivid_min_rect);
930 		v4l2_rect_set_max_size(&s->r, &dev->src_rect);
931 		v4l2_rect_map_inside(&s->r, &dev->crop_bounds_cap);
932 		s->r.top /= factor;
933 		s->r.height /= factor;
934 		if (dev->has_scaler_cap) {
935 			struct v4l2_rect fmt = dev->fmt_cap_rect;
936 			struct v4l2_rect max_rect = {
937 				0, 0,
938 				s->r.width * MAX_ZOOM,
939 				s->r.height * MAX_ZOOM
940 			};
941 			struct v4l2_rect min_rect = {
942 				0, 0,
943 				s->r.width / MAX_ZOOM,
944 				s->r.height / MAX_ZOOM
945 			};
946 
947 			v4l2_rect_set_min_size(&fmt, &min_rect);
948 			if (!dev->has_compose_cap)
949 				v4l2_rect_set_max_size(&fmt, &max_rect);
950 			if (!v4l2_rect_same_size(&dev->fmt_cap_rect, &fmt) &&
951 			    vb2_is_busy(&dev->vb_vid_cap_q))
952 				return -EBUSY;
953 			if (dev->has_compose_cap) {
954 				v4l2_rect_set_min_size(compose, &min_rect);
955 				v4l2_rect_set_max_size(compose, &max_rect);
956 				v4l2_rect_map_inside(compose, &fmt);
957 			}
958 			dev->fmt_cap_rect = fmt;
959 			tpg_s_buf_height(&dev->tpg, fmt.height);
960 		} else if (dev->has_compose_cap) {
961 			struct v4l2_rect fmt = dev->fmt_cap_rect;
962 
963 			v4l2_rect_set_min_size(&fmt, &s->r);
964 			if (!v4l2_rect_same_size(&dev->fmt_cap_rect, &fmt) &&
965 			    vb2_is_busy(&dev->vb_vid_cap_q))
966 				return -EBUSY;
967 			dev->fmt_cap_rect = fmt;
968 			tpg_s_buf_height(&dev->tpg, fmt.height);
969 			v4l2_rect_set_size_to(compose, &s->r);
970 			v4l2_rect_map_inside(compose, &dev->fmt_cap_rect);
971 		} else {
972 			if (!v4l2_rect_same_size(&s->r, &dev->fmt_cap_rect) &&
973 			    vb2_is_busy(&dev->vb_vid_cap_q))
974 				return -EBUSY;
975 			v4l2_rect_set_size_to(&dev->fmt_cap_rect, &s->r);
976 			v4l2_rect_set_size_to(compose, &s->r);
977 			v4l2_rect_map_inside(compose, &dev->fmt_cap_rect);
978 			tpg_s_buf_height(&dev->tpg, dev->fmt_cap_rect.height);
979 		}
980 		s->r.top *= factor;
981 		s->r.height *= factor;
982 		*crop = s->r;
983 		break;
984 	case V4L2_SEL_TGT_COMPOSE:
985 		if (!dev->has_compose_cap)
986 			return -EINVAL;
987 		ret = vivid_vid_adjust_sel(s->flags, &s->r);
988 		if (ret)
989 			return ret;
990 		v4l2_rect_set_min_size(&s->r, &vivid_min_rect);
991 		v4l2_rect_set_max_size(&s->r, &dev->fmt_cap_rect);
992 		if (dev->has_scaler_cap) {
993 			struct v4l2_rect max_rect = {
994 				0, 0,
995 				dev->src_rect.width * MAX_ZOOM,
996 				(dev->src_rect.height / factor) * MAX_ZOOM
997 			};
998 
999 			v4l2_rect_set_max_size(&s->r, &max_rect);
1000 			if (dev->has_crop_cap) {
1001 				struct v4l2_rect min_rect = {
1002 					0, 0,
1003 					s->r.width / MAX_ZOOM,
1004 					(s->r.height * factor) / MAX_ZOOM
1005 				};
1006 				struct v4l2_rect max_rect = {
1007 					0, 0,
1008 					s->r.width * MAX_ZOOM,
1009 					(s->r.height * factor) * MAX_ZOOM
1010 				};
1011 
1012 				v4l2_rect_set_min_size(crop, &min_rect);
1013 				v4l2_rect_set_max_size(crop, &max_rect);
1014 				v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
1015 			}
1016 		} else if (dev->has_crop_cap) {
1017 			s->r.top *= factor;
1018 			s->r.height *= factor;
1019 			v4l2_rect_set_max_size(&s->r, &dev->src_rect);
1020 			v4l2_rect_set_size_to(crop, &s->r);
1021 			v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
1022 			s->r.top /= factor;
1023 			s->r.height /= factor;
1024 		} else {
1025 			v4l2_rect_set_size_to(&s->r, &dev->src_rect);
1026 			s->r.height /= factor;
1027 		}
1028 		v4l2_rect_map_inside(&s->r, &dev->fmt_cap_rect);
1029 		*compose = s->r;
1030 		break;
1031 	default:
1032 		return -EINVAL;
1033 	}
1034 
1035 	tpg_s_crop_compose(&dev->tpg, crop, compose);
1036 	return 0;
1037 }
1038 
1039 int vivid_vid_cap_g_pixelaspect(struct file *file, void *priv,
1040 				int type, struct v4l2_fract *f)
1041 {
1042 	struct vivid_dev *dev = video_drvdata(file);
1043 
1044 	if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1045 		return -EINVAL;
1046 
1047 	switch (vivid_get_pixel_aspect(dev)) {
1048 	case TPG_PIXEL_ASPECT_NTSC:
1049 		f->numerator = 11;
1050 		f->denominator = 10;
1051 		break;
1052 	case TPG_PIXEL_ASPECT_PAL:
1053 		f->numerator = 54;
1054 		f->denominator = 59;
1055 		break;
1056 	default:
1057 		break;
1058 	}
1059 	return 0;
1060 }
1061 
1062 static const struct v4l2_audio vivid_audio_inputs[] = {
1063 	{ 0, "TV", V4L2_AUDCAP_STEREO },
1064 	{ 1, "Line-In", V4L2_AUDCAP_STEREO },
1065 };
1066 
1067 int vidioc_enum_input(struct file *file, void *priv,
1068 				struct v4l2_input *inp)
1069 {
1070 	struct vivid_dev *dev = video_drvdata(file);
1071 
1072 	if (inp->index >= dev->num_inputs)
1073 		return -EINVAL;
1074 
1075 	inp->type = V4L2_INPUT_TYPE_CAMERA;
1076 	switch (dev->input_type[inp->index]) {
1077 	case WEBCAM:
1078 		snprintf(inp->name, sizeof(inp->name), "Webcam %u",
1079 				dev->input_name_counter[inp->index]);
1080 		inp->capabilities = 0;
1081 		break;
1082 	case TV:
1083 		snprintf(inp->name, sizeof(inp->name), "TV %u",
1084 				dev->input_name_counter[inp->index]);
1085 		inp->type = V4L2_INPUT_TYPE_TUNER;
1086 		inp->std = V4L2_STD_ALL;
1087 		if (dev->has_audio_inputs)
1088 			inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1089 		inp->capabilities = V4L2_IN_CAP_STD;
1090 		break;
1091 	case SVID:
1092 		snprintf(inp->name, sizeof(inp->name), "S-Video %u",
1093 				dev->input_name_counter[inp->index]);
1094 		inp->std = V4L2_STD_ALL;
1095 		if (dev->has_audio_inputs)
1096 			inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1097 		inp->capabilities = V4L2_IN_CAP_STD;
1098 		break;
1099 	case HDMI:
1100 		snprintf(inp->name, sizeof(inp->name), "HDMI %u",
1101 				dev->input_name_counter[inp->index]);
1102 		inp->capabilities = V4L2_IN_CAP_DV_TIMINGS;
1103 		if (dev->edid_blocks == 0 ||
1104 		    dev->dv_timings_signal_mode[dev->input] == NO_SIGNAL)
1105 			inp->status |= V4L2_IN_ST_NO_SIGNAL;
1106 		else if (dev->dv_timings_signal_mode[dev->input] == NO_LOCK ||
1107 			 dev->dv_timings_signal_mode[dev->input] == OUT_OF_RANGE)
1108 			inp->status |= V4L2_IN_ST_NO_H_LOCK;
1109 		break;
1110 	}
1111 	if (dev->sensor_hflip)
1112 		inp->status |= V4L2_IN_ST_HFLIP;
1113 	if (dev->sensor_vflip)
1114 		inp->status |= V4L2_IN_ST_VFLIP;
1115 	if (dev->input == inp->index && vivid_is_sdtv_cap(dev)) {
1116 		if (dev->std_signal_mode[dev->input] == NO_SIGNAL) {
1117 			inp->status |= V4L2_IN_ST_NO_SIGNAL;
1118 		} else if (dev->std_signal_mode[dev->input] == NO_LOCK) {
1119 			inp->status |= V4L2_IN_ST_NO_H_LOCK;
1120 		} else if (vivid_is_tv_cap(dev)) {
1121 			switch (tpg_g_quality(&dev->tpg)) {
1122 			case TPG_QUAL_GRAY:
1123 				inp->status |= V4L2_IN_ST_COLOR_KILL;
1124 				break;
1125 			case TPG_QUAL_NOISE:
1126 				inp->status |= V4L2_IN_ST_NO_H_LOCK;
1127 				break;
1128 			default:
1129 				break;
1130 			}
1131 		}
1132 	}
1133 	return 0;
1134 }
1135 
1136 int vidioc_g_input(struct file *file, void *priv, unsigned *i)
1137 {
1138 	struct vivid_dev *dev = video_drvdata(file);
1139 
1140 	*i = dev->input;
1141 	return 0;
1142 }
1143 
1144 int vidioc_s_input(struct file *file, void *priv, unsigned i)
1145 {
1146 	struct vivid_dev *dev = video_drvdata(file);
1147 	struct v4l2_bt_timings *bt = &dev->dv_timings_cap[dev->input].bt;
1148 	unsigned brightness;
1149 
1150 	if (i >= dev->num_inputs)
1151 		return -EINVAL;
1152 
1153 	if (i == dev->input)
1154 		return 0;
1155 
1156 	if (vb2_is_busy(&dev->vb_vid_cap_q) ||
1157 	    vb2_is_busy(&dev->vb_vbi_cap_q) ||
1158 	    vb2_is_busy(&dev->vb_meta_cap_q))
1159 		return -EBUSY;
1160 
1161 	dev->input = i;
1162 	dev->vid_cap_dev.tvnorms = 0;
1163 	if (dev->input_type[i] == TV || dev->input_type[i] == SVID) {
1164 		dev->tv_audio_input = (dev->input_type[i] == TV) ? 0 : 1;
1165 		dev->vid_cap_dev.tvnorms = V4L2_STD_ALL;
1166 	}
1167 	dev->vbi_cap_dev.tvnorms = dev->vid_cap_dev.tvnorms;
1168 	dev->meta_cap_dev.tvnorms = dev->vid_cap_dev.tvnorms;
1169 	vivid_update_format_cap(dev, false);
1170 
1171 	if (dev->colorspace) {
1172 		switch (dev->input_type[i]) {
1173 		case WEBCAM:
1174 			v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
1175 			break;
1176 		case TV:
1177 		case SVID:
1178 			v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
1179 			break;
1180 		case HDMI:
1181 			if (bt->flags & V4L2_DV_FL_IS_CE_VIDEO) {
1182 				if (dev->src_rect.width == 720 && dev->src_rect.height <= 576)
1183 					v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
1184 				else
1185 					v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_709);
1186 			} else {
1187 				v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
1188 			}
1189 			break;
1190 		}
1191 	}
1192 
1193 	/*
1194 	 * Modify the brightness range depending on the input.
1195 	 * This makes it easy to use vivid to test if applications can
1196 	 * handle control range modifications and is also how this is
1197 	 * typically used in practice as different inputs may be hooked
1198 	 * up to different receivers with different control ranges.
1199 	 */
1200 	brightness = 128 * i + dev->input_brightness[i];
1201 	v4l2_ctrl_modify_range(dev->brightness,
1202 			128 * i, 255 + 128 * i, 1, 128 + 128 * i);
1203 	v4l2_ctrl_s_ctrl(dev->brightness, brightness);
1204 
1205 	/* Restore per-input states. */
1206 	v4l2_ctrl_activate(dev->ctrl_dv_timings_signal_mode,
1207 			   vivid_is_hdmi_cap(dev));
1208 	v4l2_ctrl_activate(dev->ctrl_dv_timings, vivid_is_hdmi_cap(dev) &&
1209 			   dev->dv_timings_signal_mode[dev->input] ==
1210 			   SELECTED_DV_TIMINGS);
1211 	v4l2_ctrl_activate(dev->ctrl_std_signal_mode, vivid_is_sdtv_cap(dev));
1212 	v4l2_ctrl_activate(dev->ctrl_standard, vivid_is_sdtv_cap(dev) &&
1213 			   dev->std_signal_mode[dev->input]);
1214 
1215 	if (vivid_is_hdmi_cap(dev)) {
1216 		v4l2_ctrl_s_ctrl(dev->ctrl_dv_timings_signal_mode,
1217 				 dev->dv_timings_signal_mode[dev->input]);
1218 		v4l2_ctrl_s_ctrl(dev->ctrl_dv_timings,
1219 				 dev->query_dv_timings[dev->input]);
1220 	} else if (vivid_is_sdtv_cap(dev)) {
1221 		v4l2_ctrl_s_ctrl(dev->ctrl_std_signal_mode,
1222 				 dev->std_signal_mode[dev->input]);
1223 		v4l2_ctrl_s_ctrl(dev->ctrl_standard,
1224 				 dev->std_signal_mode[dev->input]);
1225 	}
1226 
1227 	return 0;
1228 }
1229 
1230 int vidioc_enumaudio(struct file *file, void *fh, struct v4l2_audio *vin)
1231 {
1232 	if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1233 		return -EINVAL;
1234 	*vin = vivid_audio_inputs[vin->index];
1235 	return 0;
1236 }
1237 
1238 int vidioc_g_audio(struct file *file, void *fh, struct v4l2_audio *vin)
1239 {
1240 	struct vivid_dev *dev = video_drvdata(file);
1241 
1242 	if (!vivid_is_sdtv_cap(dev))
1243 		return -EINVAL;
1244 	*vin = vivid_audio_inputs[dev->tv_audio_input];
1245 	return 0;
1246 }
1247 
1248 int vidioc_s_audio(struct file *file, void *fh, const struct v4l2_audio *vin)
1249 {
1250 	struct vivid_dev *dev = video_drvdata(file);
1251 
1252 	if (!vivid_is_sdtv_cap(dev))
1253 		return -EINVAL;
1254 	if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1255 		return -EINVAL;
1256 	dev->tv_audio_input = vin->index;
1257 	return 0;
1258 }
1259 
1260 int vivid_video_g_frequency(struct file *file, void *fh, struct v4l2_frequency *vf)
1261 {
1262 	struct vivid_dev *dev = video_drvdata(file);
1263 
1264 	if (vf->tuner != 0)
1265 		return -EINVAL;
1266 	vf->frequency = dev->tv_freq;
1267 	return 0;
1268 }
1269 
1270 int vivid_video_s_frequency(struct file *file, void *fh, const struct v4l2_frequency *vf)
1271 {
1272 	struct vivid_dev *dev = video_drvdata(file);
1273 
1274 	if (vf->tuner != 0)
1275 		return -EINVAL;
1276 	dev->tv_freq = clamp_t(unsigned, vf->frequency, MIN_TV_FREQ, MAX_TV_FREQ);
1277 	if (vivid_is_tv_cap(dev))
1278 		vivid_update_quality(dev);
1279 	return 0;
1280 }
1281 
1282 int vivid_video_s_tuner(struct file *file, void *fh, const struct v4l2_tuner *vt)
1283 {
1284 	struct vivid_dev *dev = video_drvdata(file);
1285 
1286 	if (vt->index != 0)
1287 		return -EINVAL;
1288 	if (vt->audmode > V4L2_TUNER_MODE_LANG1_LANG2)
1289 		return -EINVAL;
1290 	dev->tv_audmode = vt->audmode;
1291 	return 0;
1292 }
1293 
1294 int vivid_video_g_tuner(struct file *file, void *fh, struct v4l2_tuner *vt)
1295 {
1296 	struct vivid_dev *dev = video_drvdata(file);
1297 	enum tpg_quality qual;
1298 
1299 	if (vt->index != 0)
1300 		return -EINVAL;
1301 
1302 	vt->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO |
1303 			 V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
1304 	vt->audmode = dev->tv_audmode;
1305 	vt->rangelow = MIN_TV_FREQ;
1306 	vt->rangehigh = MAX_TV_FREQ;
1307 	qual = vivid_get_quality(dev, &vt->afc);
1308 	if (qual == TPG_QUAL_COLOR)
1309 		vt->signal = 0xffff;
1310 	else if (qual == TPG_QUAL_GRAY)
1311 		vt->signal = 0x8000;
1312 	else
1313 		vt->signal = 0;
1314 	if (qual == TPG_QUAL_NOISE) {
1315 		vt->rxsubchans = 0;
1316 	} else if (qual == TPG_QUAL_GRAY) {
1317 		vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1318 	} else {
1319 		unsigned int channel_nr = dev->tv_freq / (6 * 16);
1320 		unsigned int options =
1321 			(dev->std_cap[dev->input] & V4L2_STD_NTSC_M) ? 4 : 3;
1322 
1323 		switch (channel_nr % options) {
1324 		case 0:
1325 			vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1326 			break;
1327 		case 1:
1328 			vt->rxsubchans = V4L2_TUNER_SUB_STEREO;
1329 			break;
1330 		case 2:
1331 			if (dev->std_cap[dev->input] & V4L2_STD_NTSC_M)
1332 				vt->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_SAP;
1333 			else
1334 				vt->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1335 			break;
1336 		case 3:
1337 			vt->rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_SAP;
1338 			break;
1339 		}
1340 	}
1341 	strscpy(vt->name, "TV Tuner", sizeof(vt->name));
1342 	return 0;
1343 }
1344 
1345 /* Must remain in sync with the vivid_ctrl_standard_strings array */
1346 const v4l2_std_id vivid_standard[] = {
1347 	V4L2_STD_NTSC_M,
1348 	V4L2_STD_NTSC_M_JP,
1349 	V4L2_STD_NTSC_M_KR,
1350 	V4L2_STD_NTSC_443,
1351 	V4L2_STD_PAL_BG | V4L2_STD_PAL_H,
1352 	V4L2_STD_PAL_I,
1353 	V4L2_STD_PAL_DK,
1354 	V4L2_STD_PAL_M,
1355 	V4L2_STD_PAL_N,
1356 	V4L2_STD_PAL_Nc,
1357 	V4L2_STD_PAL_60,
1358 	V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H,
1359 	V4L2_STD_SECAM_DK,
1360 	V4L2_STD_SECAM_L,
1361 	V4L2_STD_SECAM_LC,
1362 	V4L2_STD_UNKNOWN
1363 };
1364 
1365 /* Must remain in sync with the vivid_standard array */
1366 const char * const vivid_ctrl_standard_strings[] = {
1367 	"NTSC-M",
1368 	"NTSC-M-JP",
1369 	"NTSC-M-KR",
1370 	"NTSC-443",
1371 	"PAL-BGH",
1372 	"PAL-I",
1373 	"PAL-DK",
1374 	"PAL-M",
1375 	"PAL-N",
1376 	"PAL-Nc",
1377 	"PAL-60",
1378 	"SECAM-BGH",
1379 	"SECAM-DK",
1380 	"SECAM-L",
1381 	"SECAM-Lc",
1382 	NULL,
1383 };
1384 
1385 int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *id)
1386 {
1387 	struct vivid_dev *dev = video_drvdata(file);
1388 	unsigned int last = dev->query_std_last[dev->input];
1389 
1390 	if (!vivid_is_sdtv_cap(dev))
1391 		return -ENODATA;
1392 	if (dev->std_signal_mode[dev->input] == NO_SIGNAL ||
1393 	    dev->std_signal_mode[dev->input] == NO_LOCK) {
1394 		*id = V4L2_STD_UNKNOWN;
1395 		return 0;
1396 	}
1397 	if (vivid_is_tv_cap(dev) && tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE) {
1398 		*id = V4L2_STD_UNKNOWN;
1399 	} else if (dev->std_signal_mode[dev->input] == CURRENT_STD) {
1400 		*id = dev->std_cap[dev->input];
1401 	} else if (dev->std_signal_mode[dev->input] == SELECTED_STD) {
1402 		*id = dev->query_std[dev->input];
1403 	} else {
1404 		*id = vivid_standard[last];
1405 		dev->query_std_last[dev->input] =
1406 			(last + 1) % ARRAY_SIZE(vivid_standard);
1407 	}
1408 
1409 	return 0;
1410 }
1411 
1412 int vivid_vid_cap_s_std(struct file *file, void *priv, v4l2_std_id id)
1413 {
1414 	struct vivid_dev *dev = video_drvdata(file);
1415 
1416 	if (!vivid_is_sdtv_cap(dev))
1417 		return -ENODATA;
1418 	if (dev->std_cap[dev->input] == id)
1419 		return 0;
1420 	if (vb2_is_busy(&dev->vb_vid_cap_q) || vb2_is_busy(&dev->vb_vbi_cap_q))
1421 		return -EBUSY;
1422 	dev->std_cap[dev->input] = id;
1423 	vivid_update_format_cap(dev, false);
1424 	return 0;
1425 }
1426 
1427 static void find_aspect_ratio(u32 width, u32 height,
1428 			       u32 *num, u32 *denom)
1429 {
1430 	if (!(height % 3) && ((height * 4 / 3) == width)) {
1431 		*num = 4;
1432 		*denom = 3;
1433 	} else if (!(height % 9) && ((height * 16 / 9) == width)) {
1434 		*num = 16;
1435 		*denom = 9;
1436 	} else if (!(height % 10) && ((height * 16 / 10) == width)) {
1437 		*num = 16;
1438 		*denom = 10;
1439 	} else if (!(height % 4) && ((height * 5 / 4) == width)) {
1440 		*num = 5;
1441 		*denom = 4;
1442 	} else if (!(height % 9) && ((height * 15 / 9) == width)) {
1443 		*num = 15;
1444 		*denom = 9;
1445 	} else { /* default to 16:9 */
1446 		*num = 16;
1447 		*denom = 9;
1448 	}
1449 }
1450 
1451 static bool valid_cvt_gtf_timings(struct v4l2_dv_timings *timings)
1452 {
1453 	struct v4l2_bt_timings *bt = &timings->bt;
1454 	u32 total_h_pixel;
1455 	u32 total_v_lines;
1456 	u32 h_freq;
1457 
1458 	if (!v4l2_valid_dv_timings(timings, &vivid_dv_timings_cap,
1459 				NULL, NULL))
1460 		return false;
1461 
1462 	total_h_pixel = V4L2_DV_BT_FRAME_WIDTH(bt);
1463 	total_v_lines = V4L2_DV_BT_FRAME_HEIGHT(bt);
1464 
1465 	h_freq = (u32)bt->pixelclock / total_h_pixel;
1466 
1467 	if (bt->standards == 0 || (bt->standards & V4L2_DV_BT_STD_CVT)) {
1468 		if (v4l2_detect_cvt(total_v_lines, h_freq, bt->vsync, bt->width,
1469 				    bt->polarities, bt->interlaced, timings))
1470 			return true;
1471 	}
1472 
1473 	if (bt->standards == 0 || (bt->standards & V4L2_DV_BT_STD_GTF)) {
1474 		struct v4l2_fract aspect_ratio;
1475 
1476 		find_aspect_ratio(bt->width, bt->height,
1477 				  &aspect_ratio.numerator,
1478 				  &aspect_ratio.denominator);
1479 		if (v4l2_detect_gtf(total_v_lines, h_freq, bt->vsync,
1480 				    bt->polarities, bt->interlaced,
1481 				    aspect_ratio, timings))
1482 			return true;
1483 	}
1484 	return false;
1485 }
1486 
1487 int vivid_vid_cap_s_dv_timings(struct file *file, void *_fh,
1488 				    struct v4l2_dv_timings *timings)
1489 {
1490 	struct vivid_dev *dev = video_drvdata(file);
1491 
1492 	if (!vivid_is_hdmi_cap(dev))
1493 		return -ENODATA;
1494 	if (!v4l2_find_dv_timings_cap(timings, &vivid_dv_timings_cap,
1495 				      0, NULL, NULL) &&
1496 	    !valid_cvt_gtf_timings(timings))
1497 		return -EINVAL;
1498 
1499 	if (v4l2_match_dv_timings(timings, &dev->dv_timings_cap[dev->input],
1500 				  0, false))
1501 		return 0;
1502 	if (vb2_is_busy(&dev->vb_vid_cap_q))
1503 		return -EBUSY;
1504 
1505 	dev->dv_timings_cap[dev->input] = *timings;
1506 	vivid_update_format_cap(dev, false);
1507 	return 0;
1508 }
1509 
1510 int vidioc_query_dv_timings(struct file *file, void *_fh,
1511 				    struct v4l2_dv_timings *timings)
1512 {
1513 	struct vivid_dev *dev = video_drvdata(file);
1514 	unsigned int input = dev->input;
1515 	unsigned int last = dev->query_dv_timings_last[input];
1516 
1517 	if (!vivid_is_hdmi_cap(dev))
1518 		return -ENODATA;
1519 	if (dev->dv_timings_signal_mode[input] == NO_SIGNAL ||
1520 	    dev->edid_blocks == 0)
1521 		return -ENOLINK;
1522 	if (dev->dv_timings_signal_mode[input] == NO_LOCK)
1523 		return -ENOLCK;
1524 	if (dev->dv_timings_signal_mode[input] == OUT_OF_RANGE) {
1525 		timings->bt.pixelclock = vivid_dv_timings_cap.bt.max_pixelclock * 2;
1526 		return -ERANGE;
1527 	}
1528 	if (dev->dv_timings_signal_mode[input] == CURRENT_DV_TIMINGS) {
1529 		*timings = dev->dv_timings_cap[input];
1530 	} else if (dev->dv_timings_signal_mode[input] ==
1531 		   SELECTED_DV_TIMINGS) {
1532 		*timings =
1533 			v4l2_dv_timings_presets[dev->query_dv_timings[input]];
1534 	} else {
1535 		*timings =
1536 			v4l2_dv_timings_presets[last];
1537 		dev->query_dv_timings_last[input] =
1538 			(last + 1) % dev->query_dv_timings_size;
1539 	}
1540 	return 0;
1541 }
1542 
1543 int vidioc_s_edid(struct file *file, void *_fh,
1544 			 struct v4l2_edid *edid)
1545 {
1546 	struct vivid_dev *dev = video_drvdata(file);
1547 	u16 phys_addr;
1548 	u32 display_present = 0;
1549 	unsigned int i, j;
1550 	int ret;
1551 
1552 	memset(edid->reserved, 0, sizeof(edid->reserved));
1553 	if (edid->pad >= dev->num_inputs)
1554 		return -EINVAL;
1555 	if (dev->input_type[edid->pad] != HDMI || edid->start_block)
1556 		return -EINVAL;
1557 	if (edid->blocks == 0) {
1558 		dev->edid_blocks = 0;
1559 		v4l2_ctrl_s_ctrl(dev->ctrl_tx_edid_present, 0);
1560 		v4l2_ctrl_s_ctrl(dev->ctrl_tx_hotplug, 0);
1561 		phys_addr = CEC_PHYS_ADDR_INVALID;
1562 		goto set_phys_addr;
1563 	}
1564 	if (edid->blocks > dev->edid_max_blocks) {
1565 		edid->blocks = dev->edid_max_blocks;
1566 		return -E2BIG;
1567 	}
1568 	phys_addr = cec_get_edid_phys_addr(edid->edid, edid->blocks * 128, NULL);
1569 	ret = v4l2_phys_addr_validate(phys_addr, &phys_addr, NULL);
1570 	if (ret)
1571 		return ret;
1572 
1573 	if (vb2_is_busy(&dev->vb_vid_cap_q))
1574 		return -EBUSY;
1575 
1576 	dev->edid_blocks = edid->blocks;
1577 	memcpy(dev->edid, edid->edid, edid->blocks * 128);
1578 
1579 	for (i = 0, j = 0; i < dev->num_outputs; i++)
1580 		if (dev->output_type[i] == HDMI)
1581 			display_present |=
1582 				dev->display_present[i] << j++;
1583 
1584 	v4l2_ctrl_s_ctrl(dev->ctrl_tx_edid_present, display_present);
1585 	v4l2_ctrl_s_ctrl(dev->ctrl_tx_hotplug, display_present);
1586 
1587 set_phys_addr:
1588 	/* TODO: a proper hotplug detect cycle should be emulated here */
1589 	cec_s_phys_addr(dev->cec_rx_adap, phys_addr, false);
1590 
1591 	for (i = 0; i < MAX_OUTPUTS && dev->cec_tx_adap[i]; i++)
1592 		cec_s_phys_addr(dev->cec_tx_adap[i],
1593 				dev->display_present[i] ?
1594 				v4l2_phys_addr_for_input(phys_addr, i + 1) :
1595 				CEC_PHYS_ADDR_INVALID,
1596 				false);
1597 	return 0;
1598 }
1599 
1600 int vidioc_enum_framesizes(struct file *file, void *fh,
1601 					 struct v4l2_frmsizeenum *fsize)
1602 {
1603 	struct vivid_dev *dev = video_drvdata(file);
1604 
1605 	if (!vivid_is_webcam(dev) && !dev->has_scaler_cap)
1606 		return -EINVAL;
1607 	if (vivid_get_format(dev, fsize->pixel_format) == NULL)
1608 		return -EINVAL;
1609 	if (vivid_is_webcam(dev)) {
1610 		if (fsize->index >= ARRAY_SIZE(webcam_sizes))
1611 			return -EINVAL;
1612 		fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1613 		fsize->discrete = webcam_sizes[fsize->index];
1614 		return 0;
1615 	}
1616 	if (fsize->index)
1617 		return -EINVAL;
1618 	fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
1619 	fsize->stepwise.min_width = MIN_WIDTH;
1620 	fsize->stepwise.max_width = MAX_WIDTH * MAX_ZOOM;
1621 	fsize->stepwise.step_width = 2;
1622 	fsize->stepwise.min_height = MIN_HEIGHT;
1623 	fsize->stepwise.max_height = MAX_HEIGHT * MAX_ZOOM;
1624 	fsize->stepwise.step_height = 2;
1625 	return 0;
1626 }
1627 
1628 /* timeperframe is arbitrary and continuous */
1629 int vidioc_enum_frameintervals(struct file *file, void *priv,
1630 					     struct v4l2_frmivalenum *fival)
1631 {
1632 	struct vivid_dev *dev = video_drvdata(file);
1633 	const struct vivid_fmt *fmt;
1634 	int i;
1635 
1636 	fmt = vivid_get_format(dev, fival->pixel_format);
1637 	if (!fmt)
1638 		return -EINVAL;
1639 
1640 	if (!vivid_is_webcam(dev)) {
1641 		if (fival->index)
1642 			return -EINVAL;
1643 		if (fival->width < MIN_WIDTH || fival->width > MAX_WIDTH * MAX_ZOOM)
1644 			return -EINVAL;
1645 		if (fival->height < MIN_HEIGHT || fival->height > MAX_HEIGHT * MAX_ZOOM)
1646 			return -EINVAL;
1647 		fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1648 		fival->discrete = dev->timeperframe_vid_cap;
1649 		return 0;
1650 	}
1651 
1652 	for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
1653 		if (fival->width == webcam_sizes[i].width &&
1654 		    fival->height == webcam_sizes[i].height)
1655 			break;
1656 	if (i == ARRAY_SIZE(webcam_sizes))
1657 		return -EINVAL;
1658 	if (fival->index >= webcam_ival_count(dev, i))
1659 		return -EINVAL;
1660 	fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1661 	fival->discrete = webcam_intervals[fival->index];
1662 	return 0;
1663 }
1664 
1665 int vivid_vid_cap_g_parm(struct file *file, void *priv,
1666 			  struct v4l2_streamparm *parm)
1667 {
1668 	struct vivid_dev *dev = video_drvdata(file);
1669 
1670 	if (parm->type != (dev->multiplanar ?
1671 			   V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1672 			   V4L2_BUF_TYPE_VIDEO_CAPTURE))
1673 		return -EINVAL;
1674 
1675 	parm->parm.capture.capability   = V4L2_CAP_TIMEPERFRAME;
1676 	parm->parm.capture.timeperframe = dev->timeperframe_vid_cap;
1677 	parm->parm.capture.readbuffers  = 1;
1678 	return 0;
1679 }
1680 
1681 int vivid_vid_cap_s_parm(struct file *file, void *priv,
1682 			  struct v4l2_streamparm *parm)
1683 {
1684 	struct vivid_dev *dev = video_drvdata(file);
1685 	unsigned int ival_sz = webcam_ival_count(dev, dev->webcam_size_idx);
1686 	struct v4l2_fract tpf;
1687 	unsigned i;
1688 
1689 	if (parm->type != (dev->multiplanar ?
1690 			   V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1691 			   V4L2_BUF_TYPE_VIDEO_CAPTURE))
1692 		return -EINVAL;
1693 	if (!vivid_is_webcam(dev))
1694 		return vivid_vid_cap_g_parm(file, priv, parm);
1695 
1696 	tpf = parm->parm.capture.timeperframe;
1697 
1698 	if (tpf.denominator == 0)
1699 		tpf = webcam_intervals[ival_sz - 1];
1700 	for (i = 0; i < ival_sz; i++)
1701 		if (V4L2_FRACT_COMPARE(tpf, >=, webcam_intervals[i]))
1702 			break;
1703 	if (i == ival_sz)
1704 		i = ival_sz - 1;
1705 	dev->webcam_ival_idx = i;
1706 	tpf = webcam_intervals[dev->webcam_ival_idx];
1707 
1708 	/* resync the thread's timings */
1709 	dev->cap_seq_resync = true;
1710 	dev->timeperframe_vid_cap = tpf;
1711 	parm->parm.capture.capability   = V4L2_CAP_TIMEPERFRAME;
1712 	parm->parm.capture.timeperframe = tpf;
1713 	parm->parm.capture.readbuffers  = 1;
1714 	return 0;
1715 }
1716