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 static const struct vivid_fmt formats_ovl[] = {
25 	{
26 		.fourcc   = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
27 		.vdownsampling = { 1 },
28 		.bit_depth = { 16 },
29 		.planes   = 1,
30 		.buffers = 1,
31 	},
32 	{
33 		.fourcc   = V4L2_PIX_FMT_XRGB555, /* gggbbbbb arrrrrgg */
34 		.vdownsampling = { 1 },
35 		.bit_depth = { 16 },
36 		.planes   = 1,
37 		.buffers = 1,
38 	},
39 	{
40 		.fourcc   = V4L2_PIX_FMT_ARGB555, /* gggbbbbb arrrrrgg */
41 		.vdownsampling = { 1 },
42 		.bit_depth = { 16 },
43 		.planes   = 1,
44 		.buffers = 1,
45 	},
46 };
47 
48 /* The number of discrete webcam framesizes */
49 #define VIVID_WEBCAM_SIZES 6
50 /* The number of discrete webcam frameintervals */
51 #define VIVID_WEBCAM_IVALS (VIVID_WEBCAM_SIZES * 2)
52 
53 /* Sizes must be in increasing order */
54 static const struct v4l2_frmsize_discrete webcam_sizes[VIVID_WEBCAM_SIZES] = {
55 	{  320, 180 },
56 	{  640, 360 },
57 	{  640, 480 },
58 	{ 1280, 720 },
59 	{ 1920, 1080 },
60 	{ 3840, 2160 },
61 };
62 
63 /*
64  * Intervals must be in increasing order and there must be twice as many
65  * elements in this array as there are in webcam_sizes.
66  */
67 static const struct v4l2_fract webcam_intervals[VIVID_WEBCAM_IVALS] = {
68 	{  1, 1 },
69 	{  1, 2 },
70 	{  1, 4 },
71 	{  1, 5 },
72 	{  1, 10 },
73 	{  2, 25 },
74 	{  1, 15 },
75 	{  1, 25 },
76 	{  1, 30 },
77 	{  1, 40 },
78 	{  1, 50 },
79 	{  1, 60 },
80 };
81 
82 static int vid_cap_queue_setup(struct vb2_queue *vq,
83 		       unsigned *nbuffers, unsigned *nplanes,
84 		       unsigned sizes[], struct device *alloc_devs[])
85 {
86 	struct vivid_dev *dev = vb2_get_drv_priv(vq);
87 	unsigned buffers = tpg_g_buffers(&dev->tpg);
88 	unsigned h = dev->fmt_cap_rect.height;
89 	unsigned p;
90 
91 	if (dev->field_cap == V4L2_FIELD_ALTERNATE) {
92 		/*
93 		 * You cannot use read() with FIELD_ALTERNATE since the field
94 		 * information (TOP/BOTTOM) cannot be passed back to the user.
95 		 */
96 		if (vb2_fileio_is_active(vq))
97 			return -EINVAL;
98 	}
99 
100 	if (dev->queue_setup_error) {
101 		/*
102 		 * Error injection: test what happens if queue_setup() returns
103 		 * an error.
104 		 */
105 		dev->queue_setup_error = false;
106 		return -EINVAL;
107 	}
108 	if (*nplanes) {
109 		/*
110 		 * Check if the number of requested planes match
111 		 * the number of buffers in the current format. You can't mix that.
112 		 */
113 		if (*nplanes != buffers)
114 			return -EINVAL;
115 		for (p = 0; p < buffers; p++) {
116 			if (sizes[p] < tpg_g_line_width(&dev->tpg, p) * h +
117 						dev->fmt_cap->data_offset[p])
118 				return -EINVAL;
119 		}
120 	} else {
121 		for (p = 0; p < buffers; p++)
122 			sizes[p] = (tpg_g_line_width(&dev->tpg, p) * h) /
123 					dev->fmt_cap->vdownsampling[p] +
124 					dev->fmt_cap->data_offset[p];
125 	}
126 
127 	if (vq->num_buffers + *nbuffers < 2)
128 		*nbuffers = 2 - vq->num_buffers;
129 
130 	*nplanes = buffers;
131 
132 	dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
133 	for (p = 0; p < buffers; p++)
134 		dprintk(dev, 1, "%s: size[%u]=%u\n", __func__, p, sizes[p]);
135 
136 	return 0;
137 }
138 
139 static int vid_cap_buf_prepare(struct vb2_buffer *vb)
140 {
141 	struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
142 	unsigned long size;
143 	unsigned buffers = tpg_g_buffers(&dev->tpg);
144 	unsigned p;
145 
146 	dprintk(dev, 1, "%s\n", __func__);
147 
148 	if (WARN_ON(NULL == dev->fmt_cap))
149 		return -EINVAL;
150 
151 	if (dev->buf_prepare_error) {
152 		/*
153 		 * Error injection: test what happens if buf_prepare() returns
154 		 * an error.
155 		 */
156 		dev->buf_prepare_error = false;
157 		return -EINVAL;
158 	}
159 	for (p = 0; p < buffers; p++) {
160 		size = (tpg_g_line_width(&dev->tpg, p) *
161 			dev->fmt_cap_rect.height) /
162 			dev->fmt_cap->vdownsampling[p] +
163 			dev->fmt_cap->data_offset[p];
164 
165 		if (vb2_plane_size(vb, p) < size) {
166 			dprintk(dev, 1, "%s data will not fit into plane %u (%lu < %lu)\n",
167 					__func__, p, vb2_plane_size(vb, p), size);
168 			return -EINVAL;
169 		}
170 
171 		vb2_set_plane_payload(vb, p, size);
172 		vb->planes[p].data_offset = dev->fmt_cap->data_offset[p];
173 	}
174 
175 	return 0;
176 }
177 
178 static void vid_cap_buf_finish(struct vb2_buffer *vb)
179 {
180 	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
181 	struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
182 	struct v4l2_timecode *tc = &vbuf->timecode;
183 	unsigned fps = 25;
184 	unsigned seq = vbuf->sequence;
185 
186 	if (!vivid_is_sdtv_cap(dev))
187 		return;
188 
189 	/*
190 	 * Set the timecode. Rarely used, so it is interesting to
191 	 * test this.
192 	 */
193 	vbuf->flags |= V4L2_BUF_FLAG_TIMECODE;
194 	if (dev->std_cap[dev->input] & V4L2_STD_525_60)
195 		fps = 30;
196 	tc->type = (fps == 30) ? V4L2_TC_TYPE_30FPS : V4L2_TC_TYPE_25FPS;
197 	tc->flags = 0;
198 	tc->frames = seq % fps;
199 	tc->seconds = (seq / fps) % 60;
200 	tc->minutes = (seq / (60 * fps)) % 60;
201 	tc->hours = (seq / (60 * 60 * fps)) % 24;
202 }
203 
204 static void vid_cap_buf_queue(struct vb2_buffer *vb)
205 {
206 	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
207 	struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
208 	struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb);
209 
210 	dprintk(dev, 1, "%s\n", __func__);
211 
212 	spin_lock(&dev->slock);
213 	list_add_tail(&buf->list, &dev->vid_cap_active);
214 	spin_unlock(&dev->slock);
215 }
216 
217 static int vid_cap_start_streaming(struct vb2_queue *vq, unsigned count)
218 {
219 	struct vivid_dev *dev = vb2_get_drv_priv(vq);
220 	unsigned i;
221 	int err;
222 
223 	if (vb2_is_streaming(&dev->vb_vid_out_q))
224 		dev->can_loop_video = vivid_vid_can_loop(dev);
225 
226 	dev->vid_cap_seq_count = 0;
227 	dprintk(dev, 1, "%s\n", __func__);
228 	for (i = 0; i < VIDEO_MAX_FRAME; i++)
229 		dev->must_blank[i] = tpg_g_perc_fill(&dev->tpg) < 100;
230 	if (dev->start_streaming_error) {
231 		dev->start_streaming_error = false;
232 		err = -EINVAL;
233 	} else {
234 		err = vivid_start_generating_vid_cap(dev, &dev->vid_cap_streaming);
235 	}
236 	if (err) {
237 		struct vivid_buffer *buf, *tmp;
238 
239 		list_for_each_entry_safe(buf, tmp, &dev->vid_cap_active, list) {
240 			list_del(&buf->list);
241 			vb2_buffer_done(&buf->vb.vb2_buf,
242 					VB2_BUF_STATE_QUEUED);
243 		}
244 	}
245 	return err;
246 }
247 
248 /* abort streaming and wait for last buffer */
249 static void vid_cap_stop_streaming(struct vb2_queue *vq)
250 {
251 	struct vivid_dev *dev = vb2_get_drv_priv(vq);
252 
253 	dprintk(dev, 1, "%s\n", __func__);
254 	vivid_stop_generating_vid_cap(dev, &dev->vid_cap_streaming);
255 	dev->can_loop_video = false;
256 }
257 
258 static void vid_cap_buf_request_complete(struct vb2_buffer *vb)
259 {
260 	struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
261 
262 	v4l2_ctrl_request_complete(vb->req_obj.req, &dev->ctrl_hdl_vid_cap);
263 }
264 
265 const struct vb2_ops vivid_vid_cap_qops = {
266 	.queue_setup		= vid_cap_queue_setup,
267 	.buf_prepare		= vid_cap_buf_prepare,
268 	.buf_finish		= vid_cap_buf_finish,
269 	.buf_queue		= vid_cap_buf_queue,
270 	.start_streaming	= vid_cap_start_streaming,
271 	.stop_streaming		= vid_cap_stop_streaming,
272 	.buf_request_complete	= vid_cap_buf_request_complete,
273 	.wait_prepare		= vb2_ops_wait_prepare,
274 	.wait_finish		= vb2_ops_wait_finish,
275 };
276 
277 /*
278  * Determine the 'picture' quality based on the current TV frequency: either
279  * COLOR for a good 'signal', GRAY (grayscale picture) for a slightly off
280  * signal or NOISE for no signal.
281  */
282 void vivid_update_quality(struct vivid_dev *dev)
283 {
284 	unsigned freq_modulus;
285 
286 	if (dev->loop_video && (vivid_is_svid_cap(dev) || vivid_is_hdmi_cap(dev))) {
287 		/*
288 		 * The 'noise' will only be replaced by the actual video
289 		 * if the output video matches the input video settings.
290 		 */
291 		tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
292 		return;
293 	}
294 	if (vivid_is_hdmi_cap(dev) &&
295 	    VIVID_INVALID_SIGNAL(dev->dv_timings_signal_mode[dev->input])) {
296 		tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
297 		return;
298 	}
299 	if (vivid_is_sdtv_cap(dev) &&
300 	    VIVID_INVALID_SIGNAL(dev->std_signal_mode[dev->input])) {
301 		tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE, 0);
302 		return;
303 	}
304 	if (!vivid_is_tv_cap(dev)) {
305 		tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
306 		return;
307 	}
308 
309 	/*
310 	 * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
311 	 * From +/- 0.25 MHz around the channel there is color, and from
312 	 * +/- 1 MHz there is grayscale (chroma is lost).
313 	 * Everywhere else it is just noise.
314 	 */
315 	freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
316 	if (freq_modulus > 2 * 16) {
317 		tpg_s_quality(&dev->tpg, TPG_QUAL_NOISE,
318 			next_pseudo_random32(dev->tv_freq ^ 0x55) & 0x3f);
319 		return;
320 	}
321 	if (freq_modulus < 12 /*0.75 * 16*/ || freq_modulus > 20 /*1.25 * 16*/)
322 		tpg_s_quality(&dev->tpg, TPG_QUAL_GRAY, 0);
323 	else
324 		tpg_s_quality(&dev->tpg, TPG_QUAL_COLOR, 0);
325 }
326 
327 /*
328  * Get the current picture quality and the associated afc value.
329  */
330 static enum tpg_quality vivid_get_quality(struct vivid_dev *dev, s32 *afc)
331 {
332 	unsigned freq_modulus;
333 
334 	if (afc)
335 		*afc = 0;
336 	if (tpg_g_quality(&dev->tpg) == TPG_QUAL_COLOR ||
337 	    tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE)
338 		return tpg_g_quality(&dev->tpg);
339 
340 	/*
341 	 * There is a fake channel every 6 MHz at 49.25, 55.25, etc.
342 	 * From +/- 0.25 MHz around the channel there is color, and from
343 	 * +/- 1 MHz there is grayscale (chroma is lost).
344 	 * Everywhere else it is just gray.
345 	 */
346 	freq_modulus = (dev->tv_freq - 676 /* (43.25-1) * 16 */) % (6 * 16);
347 	if (afc)
348 		*afc = freq_modulus - 1 * 16;
349 	return TPG_QUAL_GRAY;
350 }
351 
352 enum tpg_video_aspect vivid_get_video_aspect(const struct vivid_dev *dev)
353 {
354 	if (vivid_is_sdtv_cap(dev))
355 		return dev->std_aspect_ratio[dev->input];
356 
357 	if (vivid_is_hdmi_cap(dev))
358 		return dev->dv_timings_aspect_ratio[dev->input];
359 
360 	return TPG_VIDEO_ASPECT_IMAGE;
361 }
362 
363 static enum tpg_pixel_aspect vivid_get_pixel_aspect(const struct vivid_dev *dev)
364 {
365 	if (vivid_is_sdtv_cap(dev))
366 		return (dev->std_cap[dev->input] & V4L2_STD_525_60) ?
367 			TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
368 
369 	if (vivid_is_hdmi_cap(dev) &&
370 	    dev->src_rect.width == 720 && dev->src_rect.height <= 576)
371 		return dev->src_rect.height == 480 ?
372 			TPG_PIXEL_ASPECT_NTSC : TPG_PIXEL_ASPECT_PAL;
373 
374 	return TPG_PIXEL_ASPECT_SQUARE;
375 }
376 
377 /*
378  * Called whenever the format has to be reset which can occur when
379  * changing inputs, standard, timings, etc.
380  */
381 void vivid_update_format_cap(struct vivid_dev *dev, bool keep_controls)
382 {
383 	struct v4l2_bt_timings *bt = &dev->dv_timings_cap[dev->input].bt;
384 	unsigned size;
385 	u64 pixelclock;
386 
387 	switch (dev->input_type[dev->input]) {
388 	case WEBCAM:
389 	default:
390 		dev->src_rect.width = webcam_sizes[dev->webcam_size_idx].width;
391 		dev->src_rect.height = webcam_sizes[dev->webcam_size_idx].height;
392 		dev->timeperframe_vid_cap = webcam_intervals[dev->webcam_ival_idx];
393 		dev->field_cap = V4L2_FIELD_NONE;
394 		tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
395 		break;
396 	case TV:
397 	case SVID:
398 		dev->field_cap = dev->tv_field_cap;
399 		dev->src_rect.width = 720;
400 		if (dev->std_cap[dev->input] & V4L2_STD_525_60) {
401 			dev->src_rect.height = 480;
402 			dev->timeperframe_vid_cap = (struct v4l2_fract) { 1001, 30000 };
403 			dev->service_set_cap = V4L2_SLICED_CAPTION_525;
404 		} else {
405 			dev->src_rect.height = 576;
406 			dev->timeperframe_vid_cap = (struct v4l2_fract) { 1000, 25000 };
407 			dev->service_set_cap = V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
408 		}
409 		tpg_s_rgb_range(&dev->tpg, V4L2_DV_RGB_RANGE_AUTO);
410 		break;
411 	case HDMI:
412 		dev->src_rect.width = bt->width;
413 		dev->src_rect.height = bt->height;
414 		size = V4L2_DV_BT_FRAME_WIDTH(bt) * V4L2_DV_BT_FRAME_HEIGHT(bt);
415 		if (dev->reduced_fps && can_reduce_fps(bt)) {
416 			pixelclock = div_u64(bt->pixelclock * 1000, 1001);
417 			bt->flags |= V4L2_DV_FL_REDUCED_FPS;
418 		} else {
419 			pixelclock = bt->pixelclock;
420 			bt->flags &= ~V4L2_DV_FL_REDUCED_FPS;
421 		}
422 		dev->timeperframe_vid_cap = (struct v4l2_fract) {
423 			size / 100, (u32)pixelclock / 100
424 		};
425 		if (bt->interlaced)
426 			dev->field_cap = V4L2_FIELD_ALTERNATE;
427 		else
428 			dev->field_cap = V4L2_FIELD_NONE;
429 
430 		/*
431 		 * We can be called from within s_ctrl, in that case we can't
432 		 * set/get controls. Luckily we don't need to in that case.
433 		 */
434 		if (keep_controls || !dev->colorspace)
435 			break;
436 		if (bt->flags & V4L2_DV_FL_IS_CE_VIDEO) {
437 			if (bt->width == 720 && bt->height <= 576)
438 				v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
439 			else
440 				v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_709);
441 			v4l2_ctrl_s_ctrl(dev->real_rgb_range_cap, 1);
442 		} else {
443 			v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
444 			v4l2_ctrl_s_ctrl(dev->real_rgb_range_cap, 0);
445 		}
446 		tpg_s_rgb_range(&dev->tpg, v4l2_ctrl_g_ctrl(dev->rgb_range_cap));
447 		break;
448 	}
449 	vfree(dev->bitmap_cap);
450 	dev->bitmap_cap = NULL;
451 	vivid_update_quality(dev);
452 	tpg_reset_source(&dev->tpg, dev->src_rect.width, dev->src_rect.height, dev->field_cap);
453 	dev->crop_cap = dev->src_rect;
454 	dev->crop_bounds_cap = dev->src_rect;
455 	dev->compose_cap = dev->crop_cap;
456 	if (V4L2_FIELD_HAS_T_OR_B(dev->field_cap))
457 		dev->compose_cap.height /= 2;
458 	dev->fmt_cap_rect = dev->compose_cap;
459 	tpg_s_video_aspect(&dev->tpg, vivid_get_video_aspect(dev));
460 	tpg_s_pixel_aspect(&dev->tpg, vivid_get_pixel_aspect(dev));
461 	tpg_update_mv_step(&dev->tpg);
462 }
463 
464 /* Map the field to something that is valid for the current input */
465 static 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 
488 static unsigned vivid_colorspace_cap(struct vivid_dev *dev)
489 {
490 	if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
491 		return tpg_g_colorspace(&dev->tpg);
492 	return dev->colorspace_out;
493 }
494 
495 static unsigned vivid_xfer_func_cap(struct vivid_dev *dev)
496 {
497 	if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
498 		return tpg_g_xfer_func(&dev->tpg);
499 	return dev->xfer_func_out;
500 }
501 
502 static unsigned vivid_ycbcr_enc_cap(struct vivid_dev *dev)
503 {
504 	if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
505 		return tpg_g_ycbcr_enc(&dev->tpg);
506 	return dev->ycbcr_enc_out;
507 }
508 
509 static unsigned int vivid_hsv_enc_cap(struct vivid_dev *dev)
510 {
511 	if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
512 		return tpg_g_hsv_enc(&dev->tpg);
513 	return dev->hsv_enc_out;
514 }
515 
516 static unsigned vivid_quantization_cap(struct vivid_dev *dev)
517 {
518 	if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
519 		return tpg_g_quantization(&dev->tpg);
520 	return dev->quantization_out;
521 }
522 
523 int 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 
552 int 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 					       VIVID_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 
665 int 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 	if (dev->overlay_cap_owner && dev->fb_cap.fmt.pixelformat != mp->pixelformat) {
687 		dprintk(dev, 1, "overlay is active, can't change pixelformat\n");
688 		return -EBUSY;
689 	}
690 
691 	dev->fmt_cap = vivid_get_format(dev, mp->pixelformat);
692 	if (V4L2_FIELD_HAS_T_OR_B(mp->field))
693 		factor = 2;
694 
695 	/* Note: the webcam input doesn't support scaling, cropping or composing */
696 
697 	if (!vivid_is_webcam(dev) &&
698 	    (dev->has_scaler_cap || dev->has_crop_cap || dev->has_compose_cap)) {
699 		struct v4l2_rect r = { 0, 0, mp->width, mp->height };
700 
701 		if (dev->has_scaler_cap) {
702 			if (dev->has_compose_cap)
703 				v4l2_rect_map_inside(compose, &r);
704 			else
705 				*compose = r;
706 			if (dev->has_crop_cap && !dev->has_compose_cap) {
707 				struct v4l2_rect min_r = {
708 					0, 0,
709 					r.width / MAX_ZOOM,
710 					factor * r.height / MAX_ZOOM
711 				};
712 				struct v4l2_rect max_r = {
713 					0, 0,
714 					r.width * MAX_ZOOM,
715 					factor * r.height * MAX_ZOOM
716 				};
717 
718 				v4l2_rect_set_min_size(crop, &min_r);
719 				v4l2_rect_set_max_size(crop, &max_r);
720 				v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
721 			} else if (dev->has_crop_cap) {
722 				struct v4l2_rect min_r = {
723 					0, 0,
724 					compose->width / MAX_ZOOM,
725 					factor * compose->height / MAX_ZOOM
726 				};
727 				struct v4l2_rect max_r = {
728 					0, 0,
729 					compose->width * MAX_ZOOM,
730 					factor * compose->height * MAX_ZOOM
731 				};
732 
733 				v4l2_rect_set_min_size(crop, &min_r);
734 				v4l2_rect_set_max_size(crop, &max_r);
735 				v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
736 			}
737 		} else if (dev->has_crop_cap && !dev->has_compose_cap) {
738 			r.height *= factor;
739 			v4l2_rect_set_size_to(crop, &r);
740 			v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
741 			r = *crop;
742 			r.height /= factor;
743 			v4l2_rect_set_size_to(compose, &r);
744 		} else if (!dev->has_crop_cap) {
745 			v4l2_rect_map_inside(compose, &r);
746 		} else {
747 			r.height *= factor;
748 			v4l2_rect_set_max_size(crop, &r);
749 			v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
750 			compose->top *= factor;
751 			compose->height *= factor;
752 			v4l2_rect_set_size_to(compose, crop);
753 			v4l2_rect_map_inside(compose, &r);
754 			compose->top /= factor;
755 			compose->height /= factor;
756 		}
757 	} else if (vivid_is_webcam(dev)) {
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 >= 2 * (VIVID_WEBCAM_SIZES - i))
765 			dev->webcam_ival_idx = 2 * (VIVID_WEBCAM_SIZES - i) - 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 			}
957 			dev->fmt_cap_rect = fmt;
958 			tpg_s_buf_height(&dev->tpg, fmt.height);
959 		} else if (dev->has_compose_cap) {
960 			struct v4l2_rect fmt = dev->fmt_cap_rect;
961 
962 			v4l2_rect_set_min_size(&fmt, &s->r);
963 			if (!v4l2_rect_same_size(&dev->fmt_cap_rect, &fmt) &&
964 			    vb2_is_busy(&dev->vb_vid_cap_q))
965 				return -EBUSY;
966 			dev->fmt_cap_rect = fmt;
967 			tpg_s_buf_height(&dev->tpg, fmt.height);
968 			v4l2_rect_set_size_to(compose, &s->r);
969 			v4l2_rect_map_inside(compose, &dev->fmt_cap_rect);
970 		} else {
971 			if (!v4l2_rect_same_size(&s->r, &dev->fmt_cap_rect) &&
972 			    vb2_is_busy(&dev->vb_vid_cap_q))
973 				return -EBUSY;
974 			v4l2_rect_set_size_to(&dev->fmt_cap_rect, &s->r);
975 			v4l2_rect_set_size_to(compose, &s->r);
976 			v4l2_rect_map_inside(compose, &dev->fmt_cap_rect);
977 			tpg_s_buf_height(&dev->tpg, dev->fmt_cap_rect.height);
978 		}
979 		s->r.top *= factor;
980 		s->r.height *= factor;
981 		*crop = s->r;
982 		break;
983 	case V4L2_SEL_TGT_COMPOSE:
984 		if (!dev->has_compose_cap)
985 			return -EINVAL;
986 		ret = vivid_vid_adjust_sel(s->flags, &s->r);
987 		if (ret)
988 			return ret;
989 		v4l2_rect_set_min_size(&s->r, &vivid_min_rect);
990 		v4l2_rect_set_max_size(&s->r, &dev->fmt_cap_rect);
991 		if (dev->has_scaler_cap) {
992 			struct v4l2_rect max_rect = {
993 				0, 0,
994 				dev->src_rect.width * MAX_ZOOM,
995 				(dev->src_rect.height / factor) * MAX_ZOOM
996 			};
997 
998 			v4l2_rect_set_max_size(&s->r, &max_rect);
999 			if (dev->has_crop_cap) {
1000 				struct v4l2_rect min_rect = {
1001 					0, 0,
1002 					s->r.width / MAX_ZOOM,
1003 					(s->r.height * factor) / MAX_ZOOM
1004 				};
1005 				struct v4l2_rect max_rect = {
1006 					0, 0,
1007 					s->r.width * MAX_ZOOM,
1008 					(s->r.height * factor) * MAX_ZOOM
1009 				};
1010 
1011 				v4l2_rect_set_min_size(crop, &min_rect);
1012 				v4l2_rect_set_max_size(crop, &max_rect);
1013 				v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
1014 			}
1015 		} else if (dev->has_crop_cap) {
1016 			s->r.top *= factor;
1017 			s->r.height *= factor;
1018 			v4l2_rect_set_max_size(&s->r, &dev->src_rect);
1019 			v4l2_rect_set_size_to(crop, &s->r);
1020 			v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
1021 			s->r.top /= factor;
1022 			s->r.height /= factor;
1023 		} else {
1024 			v4l2_rect_set_size_to(&s->r, &dev->src_rect);
1025 			s->r.height /= factor;
1026 		}
1027 		v4l2_rect_map_inside(&s->r, &dev->fmt_cap_rect);
1028 		if (dev->bitmap_cap && (compose->width != s->r.width ||
1029 					compose->height != s->r.height)) {
1030 			vfree(dev->bitmap_cap);
1031 			dev->bitmap_cap = NULL;
1032 		}
1033 		*compose = s->r;
1034 		break;
1035 	default:
1036 		return -EINVAL;
1037 	}
1038 
1039 	tpg_s_crop_compose(&dev->tpg, crop, compose);
1040 	return 0;
1041 }
1042 
1043 int vivid_vid_cap_g_pixelaspect(struct file *file, void *priv,
1044 				int type, struct v4l2_fract *f)
1045 {
1046 	struct vivid_dev *dev = video_drvdata(file);
1047 
1048 	if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1049 		return -EINVAL;
1050 
1051 	switch (vivid_get_pixel_aspect(dev)) {
1052 	case TPG_PIXEL_ASPECT_NTSC:
1053 		f->numerator = 11;
1054 		f->denominator = 10;
1055 		break;
1056 	case TPG_PIXEL_ASPECT_PAL:
1057 		f->numerator = 54;
1058 		f->denominator = 59;
1059 		break;
1060 	default:
1061 		break;
1062 	}
1063 	return 0;
1064 }
1065 
1066 int vidioc_enum_fmt_vid_overlay(struct file *file, void  *priv,
1067 					struct v4l2_fmtdesc *f)
1068 {
1069 	struct vivid_dev *dev = video_drvdata(file);
1070 	const struct vivid_fmt *fmt;
1071 
1072 	if (dev->multiplanar)
1073 		return -ENOTTY;
1074 
1075 	if (f->index >= ARRAY_SIZE(formats_ovl))
1076 		return -EINVAL;
1077 
1078 	fmt = &formats_ovl[f->index];
1079 
1080 	f->pixelformat = fmt->fourcc;
1081 	return 0;
1082 }
1083 
1084 int vidioc_g_fmt_vid_overlay(struct file *file, void *priv,
1085 					struct v4l2_format *f)
1086 {
1087 	struct vivid_dev *dev = video_drvdata(file);
1088 	const struct v4l2_rect *compose = &dev->compose_cap;
1089 	struct v4l2_window *win = &f->fmt.win;
1090 	unsigned clipcount = win->clipcount;
1091 
1092 	if (dev->multiplanar)
1093 		return -ENOTTY;
1094 
1095 	win->w.top = dev->overlay_cap_top;
1096 	win->w.left = dev->overlay_cap_left;
1097 	win->w.width = compose->width;
1098 	win->w.height = compose->height;
1099 	win->field = dev->overlay_cap_field;
1100 	win->clipcount = dev->clipcount_cap;
1101 	if (clipcount > dev->clipcount_cap)
1102 		clipcount = dev->clipcount_cap;
1103 	if (dev->bitmap_cap == NULL)
1104 		win->bitmap = NULL;
1105 	else if (win->bitmap) {
1106 		if (copy_to_user(win->bitmap, dev->bitmap_cap,
1107 		    ((compose->width + 7) / 8) * compose->height))
1108 			return -EFAULT;
1109 	}
1110 	if (clipcount && win->clips)
1111 		memcpy(win->clips, dev->clips_cap,
1112 		       clipcount * sizeof(dev->clips_cap[0]));
1113 	return 0;
1114 }
1115 
1116 int vidioc_try_fmt_vid_overlay(struct file *file, void *priv,
1117 					struct v4l2_format *f)
1118 {
1119 	struct vivid_dev *dev = video_drvdata(file);
1120 	const struct v4l2_rect *compose = &dev->compose_cap;
1121 	struct v4l2_window *win = &f->fmt.win;
1122 	int i, j;
1123 
1124 	if (dev->multiplanar)
1125 		return -ENOTTY;
1126 
1127 	win->w.left = clamp_t(int, win->w.left,
1128 			      -dev->fb_cap.fmt.width, dev->fb_cap.fmt.width);
1129 	win->w.top = clamp_t(int, win->w.top,
1130 			     -dev->fb_cap.fmt.height, dev->fb_cap.fmt.height);
1131 	win->w.width = compose->width;
1132 	win->w.height = compose->height;
1133 	if (win->field != V4L2_FIELD_BOTTOM && win->field != V4L2_FIELD_TOP)
1134 		win->field = V4L2_FIELD_ANY;
1135 	win->chromakey = 0;
1136 	win->global_alpha = 0;
1137 	if (win->clipcount && !win->clips)
1138 		win->clipcount = 0;
1139 	if (win->clipcount > MAX_CLIPS)
1140 		win->clipcount = MAX_CLIPS;
1141 	if (win->clipcount) {
1142 		memcpy(dev->try_clips_cap, win->clips,
1143 		       win->clipcount * sizeof(dev->clips_cap[0]));
1144 		for (i = 0; i < win->clipcount; i++) {
1145 			struct v4l2_rect *r = &dev->try_clips_cap[i].c;
1146 
1147 			r->top = clamp_t(s32, r->top, 0, dev->fb_cap.fmt.height - 1);
1148 			r->height = clamp_t(s32, r->height, 1, dev->fb_cap.fmt.height - r->top);
1149 			r->left = clamp_t(u32, r->left, 0, dev->fb_cap.fmt.width - 1);
1150 			r->width = clamp_t(u32, r->width, 1, dev->fb_cap.fmt.width - r->left);
1151 		}
1152 		/*
1153 		 * Yeah, so sue me, it's an O(n^2) algorithm. But n is a small
1154 		 * number and it's typically a one-time deal.
1155 		 */
1156 		for (i = 0; i < win->clipcount - 1; i++) {
1157 			struct v4l2_rect *r1 = &dev->try_clips_cap[i].c;
1158 
1159 			for (j = i + 1; j < win->clipcount; j++) {
1160 				struct v4l2_rect *r2 = &dev->try_clips_cap[j].c;
1161 
1162 				if (v4l2_rect_overlap(r1, r2))
1163 					return -EINVAL;
1164 			}
1165 		}
1166 		memcpy(win->clips, dev->try_clips_cap,
1167 		       win->clipcount * sizeof(dev->clips_cap[0]));
1168 	}
1169 	return 0;
1170 }
1171 
1172 int vidioc_s_fmt_vid_overlay(struct file *file, void *priv,
1173 					struct v4l2_format *f)
1174 {
1175 	struct vivid_dev *dev = video_drvdata(file);
1176 	const struct v4l2_rect *compose = &dev->compose_cap;
1177 	struct v4l2_window *win = &f->fmt.win;
1178 	int ret = vidioc_try_fmt_vid_overlay(file, priv, f);
1179 	unsigned bitmap_size = ((compose->width + 7) / 8) * compose->height;
1180 	unsigned clips_size = win->clipcount * sizeof(dev->clips_cap[0]);
1181 	void *new_bitmap = NULL;
1182 
1183 	if (ret)
1184 		return ret;
1185 
1186 	if (win->bitmap) {
1187 		new_bitmap = vzalloc(bitmap_size);
1188 
1189 		if (new_bitmap == NULL)
1190 			return -ENOMEM;
1191 		if (copy_from_user(new_bitmap, win->bitmap, bitmap_size)) {
1192 			vfree(new_bitmap);
1193 			return -EFAULT;
1194 		}
1195 	}
1196 
1197 	dev->overlay_cap_top = win->w.top;
1198 	dev->overlay_cap_left = win->w.left;
1199 	dev->overlay_cap_field = win->field;
1200 	vfree(dev->bitmap_cap);
1201 	dev->bitmap_cap = new_bitmap;
1202 	dev->clipcount_cap = win->clipcount;
1203 	if (dev->clipcount_cap)
1204 		memcpy(dev->clips_cap, dev->try_clips_cap, clips_size);
1205 	return 0;
1206 }
1207 
1208 int vivid_vid_cap_overlay(struct file *file, void *fh, unsigned i)
1209 {
1210 	struct vivid_dev *dev = video_drvdata(file);
1211 
1212 	if (dev->multiplanar)
1213 		return -ENOTTY;
1214 
1215 	if (i && dev->fb_vbase_cap == NULL)
1216 		return -EINVAL;
1217 
1218 	if (i && dev->fb_cap.fmt.pixelformat != dev->fmt_cap->fourcc) {
1219 		dprintk(dev, 1, "mismatch between overlay and video capture pixelformats\n");
1220 		return -EINVAL;
1221 	}
1222 
1223 	if (dev->overlay_cap_owner && dev->overlay_cap_owner != fh)
1224 		return -EBUSY;
1225 	dev->overlay_cap_owner = i ? fh : NULL;
1226 	return 0;
1227 }
1228 
1229 int vivid_vid_cap_g_fbuf(struct file *file, void *fh,
1230 				struct v4l2_framebuffer *a)
1231 {
1232 	struct vivid_dev *dev = video_drvdata(file);
1233 
1234 	if (dev->multiplanar)
1235 		return -ENOTTY;
1236 
1237 	*a = dev->fb_cap;
1238 	a->capability = V4L2_FBUF_CAP_BITMAP_CLIPPING |
1239 			V4L2_FBUF_CAP_LIST_CLIPPING;
1240 	a->flags = V4L2_FBUF_FLAG_PRIMARY;
1241 	a->fmt.field = V4L2_FIELD_NONE;
1242 	a->fmt.colorspace = V4L2_COLORSPACE_SRGB;
1243 	a->fmt.priv = 0;
1244 	return 0;
1245 }
1246 
1247 int vivid_vid_cap_s_fbuf(struct file *file, void *fh,
1248 				const struct v4l2_framebuffer *a)
1249 {
1250 	struct vivid_dev *dev = video_drvdata(file);
1251 	const struct vivid_fmt *fmt;
1252 
1253 	if (dev->multiplanar)
1254 		return -ENOTTY;
1255 
1256 	if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO))
1257 		return -EPERM;
1258 
1259 	if (dev->overlay_cap_owner)
1260 		return -EBUSY;
1261 
1262 	if (a->base == NULL) {
1263 		dev->fb_cap.base = NULL;
1264 		dev->fb_vbase_cap = NULL;
1265 		return 0;
1266 	}
1267 
1268 	if (a->fmt.width < 48 || a->fmt.height < 32)
1269 		return -EINVAL;
1270 	fmt = vivid_get_format(dev, a->fmt.pixelformat);
1271 	if (!fmt || !fmt->can_do_overlay)
1272 		return -EINVAL;
1273 	if (a->fmt.bytesperline < (a->fmt.width * fmt->bit_depth[0]) / 8)
1274 		return -EINVAL;
1275 	if (a->fmt.height * a->fmt.bytesperline < a->fmt.sizeimage)
1276 		return -EINVAL;
1277 
1278 	dev->fb_vbase_cap = phys_to_virt((unsigned long)a->base);
1279 	dev->fb_cap = *a;
1280 	dev->overlay_cap_left = clamp_t(int, dev->overlay_cap_left,
1281 				    -dev->fb_cap.fmt.width, dev->fb_cap.fmt.width);
1282 	dev->overlay_cap_top = clamp_t(int, dev->overlay_cap_top,
1283 				   -dev->fb_cap.fmt.height, dev->fb_cap.fmt.height);
1284 	return 0;
1285 }
1286 
1287 static const struct v4l2_audio vivid_audio_inputs[] = {
1288 	{ 0, "TV", V4L2_AUDCAP_STEREO },
1289 	{ 1, "Line-In", V4L2_AUDCAP_STEREO },
1290 };
1291 
1292 int vidioc_enum_input(struct file *file, void *priv,
1293 				struct v4l2_input *inp)
1294 {
1295 	struct vivid_dev *dev = video_drvdata(file);
1296 
1297 	if (inp->index >= dev->num_inputs)
1298 		return -EINVAL;
1299 
1300 	inp->type = V4L2_INPUT_TYPE_CAMERA;
1301 	switch (dev->input_type[inp->index]) {
1302 	case WEBCAM:
1303 		snprintf(inp->name, sizeof(inp->name), "Webcam %u",
1304 				dev->input_name_counter[inp->index]);
1305 		inp->capabilities = 0;
1306 		break;
1307 	case TV:
1308 		snprintf(inp->name, sizeof(inp->name), "TV %u",
1309 				dev->input_name_counter[inp->index]);
1310 		inp->type = V4L2_INPUT_TYPE_TUNER;
1311 		inp->std = V4L2_STD_ALL;
1312 		if (dev->has_audio_inputs)
1313 			inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1314 		inp->capabilities = V4L2_IN_CAP_STD;
1315 		break;
1316 	case SVID:
1317 		snprintf(inp->name, sizeof(inp->name), "S-Video %u",
1318 				dev->input_name_counter[inp->index]);
1319 		inp->std = V4L2_STD_ALL;
1320 		if (dev->has_audio_inputs)
1321 			inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1322 		inp->capabilities = V4L2_IN_CAP_STD;
1323 		break;
1324 	case HDMI:
1325 		snprintf(inp->name, sizeof(inp->name), "HDMI %u",
1326 				dev->input_name_counter[inp->index]);
1327 		inp->capabilities = V4L2_IN_CAP_DV_TIMINGS;
1328 		if (dev->edid_blocks == 0 ||
1329 		    dev->dv_timings_signal_mode[dev->input] == NO_SIGNAL)
1330 			inp->status |= V4L2_IN_ST_NO_SIGNAL;
1331 		else if (dev->dv_timings_signal_mode[dev->input] == NO_LOCK ||
1332 			 dev->dv_timings_signal_mode[dev->input] == OUT_OF_RANGE)
1333 			inp->status |= V4L2_IN_ST_NO_H_LOCK;
1334 		break;
1335 	}
1336 	if (dev->sensor_hflip)
1337 		inp->status |= V4L2_IN_ST_HFLIP;
1338 	if (dev->sensor_vflip)
1339 		inp->status |= V4L2_IN_ST_VFLIP;
1340 	if (dev->input == inp->index && vivid_is_sdtv_cap(dev)) {
1341 		if (dev->std_signal_mode[dev->input] == NO_SIGNAL) {
1342 			inp->status |= V4L2_IN_ST_NO_SIGNAL;
1343 		} else if (dev->std_signal_mode[dev->input] == NO_LOCK) {
1344 			inp->status |= V4L2_IN_ST_NO_H_LOCK;
1345 		} else if (vivid_is_tv_cap(dev)) {
1346 			switch (tpg_g_quality(&dev->tpg)) {
1347 			case TPG_QUAL_GRAY:
1348 				inp->status |= V4L2_IN_ST_COLOR_KILL;
1349 				break;
1350 			case TPG_QUAL_NOISE:
1351 				inp->status |= V4L2_IN_ST_NO_H_LOCK;
1352 				break;
1353 			default:
1354 				break;
1355 			}
1356 		}
1357 	}
1358 	return 0;
1359 }
1360 
1361 int vidioc_g_input(struct file *file, void *priv, unsigned *i)
1362 {
1363 	struct vivid_dev *dev = video_drvdata(file);
1364 
1365 	*i = dev->input;
1366 	return 0;
1367 }
1368 
1369 int vidioc_s_input(struct file *file, void *priv, unsigned i)
1370 {
1371 	struct vivid_dev *dev = video_drvdata(file);
1372 	struct v4l2_bt_timings *bt = &dev->dv_timings_cap[dev->input].bt;
1373 	unsigned brightness;
1374 
1375 	if (i >= dev->num_inputs)
1376 		return -EINVAL;
1377 
1378 	if (i == dev->input)
1379 		return 0;
1380 
1381 	if (vb2_is_busy(&dev->vb_vid_cap_q) ||
1382 	    vb2_is_busy(&dev->vb_vbi_cap_q) ||
1383 	    vb2_is_busy(&dev->vb_meta_cap_q))
1384 		return -EBUSY;
1385 
1386 	dev->input = i;
1387 	dev->vid_cap_dev.tvnorms = 0;
1388 	if (dev->input_type[i] == TV || dev->input_type[i] == SVID) {
1389 		dev->tv_audio_input = (dev->input_type[i] == TV) ? 0 : 1;
1390 		dev->vid_cap_dev.tvnorms = V4L2_STD_ALL;
1391 	}
1392 	dev->vbi_cap_dev.tvnorms = dev->vid_cap_dev.tvnorms;
1393 	dev->meta_cap_dev.tvnorms = dev->vid_cap_dev.tvnorms;
1394 	vivid_update_format_cap(dev, false);
1395 
1396 	if (dev->colorspace) {
1397 		switch (dev->input_type[i]) {
1398 		case WEBCAM:
1399 			v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
1400 			break;
1401 		case TV:
1402 		case SVID:
1403 			v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
1404 			break;
1405 		case HDMI:
1406 			if (bt->flags & V4L2_DV_FL_IS_CE_VIDEO) {
1407 				if (dev->src_rect.width == 720 && dev->src_rect.height <= 576)
1408 					v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
1409 				else
1410 					v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_709);
1411 			} else {
1412 				v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
1413 			}
1414 			break;
1415 		}
1416 	}
1417 
1418 	/*
1419 	 * Modify the brightness range depending on the input.
1420 	 * This makes it easy to use vivid to test if applications can
1421 	 * handle control range modifications and is also how this is
1422 	 * typically used in practice as different inputs may be hooked
1423 	 * up to different receivers with different control ranges.
1424 	 */
1425 	brightness = 128 * i + dev->input_brightness[i];
1426 	v4l2_ctrl_modify_range(dev->brightness,
1427 			128 * i, 255 + 128 * i, 1, 128 + 128 * i);
1428 	v4l2_ctrl_s_ctrl(dev->brightness, brightness);
1429 
1430 	/* Restore per-input states. */
1431 	v4l2_ctrl_activate(dev->ctrl_dv_timings_signal_mode,
1432 			   vivid_is_hdmi_cap(dev));
1433 	v4l2_ctrl_activate(dev->ctrl_dv_timings, vivid_is_hdmi_cap(dev) &&
1434 			   dev->dv_timings_signal_mode[dev->input] ==
1435 			   SELECTED_DV_TIMINGS);
1436 	v4l2_ctrl_activate(dev->ctrl_std_signal_mode, vivid_is_sdtv_cap(dev));
1437 	v4l2_ctrl_activate(dev->ctrl_standard, vivid_is_sdtv_cap(dev) &&
1438 			   dev->std_signal_mode[dev->input]);
1439 
1440 	if (vivid_is_hdmi_cap(dev)) {
1441 		v4l2_ctrl_s_ctrl(dev->ctrl_dv_timings_signal_mode,
1442 				 dev->dv_timings_signal_mode[dev->input]);
1443 		v4l2_ctrl_s_ctrl(dev->ctrl_dv_timings,
1444 				 dev->query_dv_timings[dev->input]);
1445 	} else if (vivid_is_sdtv_cap(dev)) {
1446 		v4l2_ctrl_s_ctrl(dev->ctrl_std_signal_mode,
1447 				 dev->std_signal_mode[dev->input]);
1448 		v4l2_ctrl_s_ctrl(dev->ctrl_standard,
1449 				 dev->std_signal_mode[dev->input]);
1450 	}
1451 
1452 	return 0;
1453 }
1454 
1455 int vidioc_enumaudio(struct file *file, void *fh, struct v4l2_audio *vin)
1456 {
1457 	if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1458 		return -EINVAL;
1459 	*vin = vivid_audio_inputs[vin->index];
1460 	return 0;
1461 }
1462 
1463 int vidioc_g_audio(struct file *file, void *fh, struct v4l2_audio *vin)
1464 {
1465 	struct vivid_dev *dev = video_drvdata(file);
1466 
1467 	if (!vivid_is_sdtv_cap(dev))
1468 		return -EINVAL;
1469 	*vin = vivid_audio_inputs[dev->tv_audio_input];
1470 	return 0;
1471 }
1472 
1473 int vidioc_s_audio(struct file *file, void *fh, const struct v4l2_audio *vin)
1474 {
1475 	struct vivid_dev *dev = video_drvdata(file);
1476 
1477 	if (!vivid_is_sdtv_cap(dev))
1478 		return -EINVAL;
1479 	if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1480 		return -EINVAL;
1481 	dev->tv_audio_input = vin->index;
1482 	return 0;
1483 }
1484 
1485 int vivid_video_g_frequency(struct file *file, void *fh, struct v4l2_frequency *vf)
1486 {
1487 	struct vivid_dev *dev = video_drvdata(file);
1488 
1489 	if (vf->tuner != 0)
1490 		return -EINVAL;
1491 	vf->frequency = dev->tv_freq;
1492 	return 0;
1493 }
1494 
1495 int vivid_video_s_frequency(struct file *file, void *fh, const struct v4l2_frequency *vf)
1496 {
1497 	struct vivid_dev *dev = video_drvdata(file);
1498 
1499 	if (vf->tuner != 0)
1500 		return -EINVAL;
1501 	dev->tv_freq = clamp_t(unsigned, vf->frequency, MIN_TV_FREQ, MAX_TV_FREQ);
1502 	if (vivid_is_tv_cap(dev))
1503 		vivid_update_quality(dev);
1504 	return 0;
1505 }
1506 
1507 int vivid_video_s_tuner(struct file *file, void *fh, const struct v4l2_tuner *vt)
1508 {
1509 	struct vivid_dev *dev = video_drvdata(file);
1510 
1511 	if (vt->index != 0)
1512 		return -EINVAL;
1513 	if (vt->audmode > V4L2_TUNER_MODE_LANG1_LANG2)
1514 		return -EINVAL;
1515 	dev->tv_audmode = vt->audmode;
1516 	return 0;
1517 }
1518 
1519 int vivid_video_g_tuner(struct file *file, void *fh, struct v4l2_tuner *vt)
1520 {
1521 	struct vivid_dev *dev = video_drvdata(file);
1522 	enum tpg_quality qual;
1523 
1524 	if (vt->index != 0)
1525 		return -EINVAL;
1526 
1527 	vt->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO |
1528 			 V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
1529 	vt->audmode = dev->tv_audmode;
1530 	vt->rangelow = MIN_TV_FREQ;
1531 	vt->rangehigh = MAX_TV_FREQ;
1532 	qual = vivid_get_quality(dev, &vt->afc);
1533 	if (qual == TPG_QUAL_COLOR)
1534 		vt->signal = 0xffff;
1535 	else if (qual == TPG_QUAL_GRAY)
1536 		vt->signal = 0x8000;
1537 	else
1538 		vt->signal = 0;
1539 	if (qual == TPG_QUAL_NOISE) {
1540 		vt->rxsubchans = 0;
1541 	} else if (qual == TPG_QUAL_GRAY) {
1542 		vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1543 	} else {
1544 		unsigned int channel_nr = dev->tv_freq / (6 * 16);
1545 		unsigned int options =
1546 			(dev->std_cap[dev->input] & V4L2_STD_NTSC_M) ? 4 : 3;
1547 
1548 		switch (channel_nr % options) {
1549 		case 0:
1550 			vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1551 			break;
1552 		case 1:
1553 			vt->rxsubchans = V4L2_TUNER_SUB_STEREO;
1554 			break;
1555 		case 2:
1556 			if (dev->std_cap[dev->input] & V4L2_STD_NTSC_M)
1557 				vt->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_SAP;
1558 			else
1559 				vt->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1560 			break;
1561 		case 3:
1562 			vt->rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_SAP;
1563 			break;
1564 		}
1565 	}
1566 	strscpy(vt->name, "TV Tuner", sizeof(vt->name));
1567 	return 0;
1568 }
1569 
1570 /* Must remain in sync with the vivid_ctrl_standard_strings array */
1571 const v4l2_std_id vivid_standard[] = {
1572 	V4L2_STD_NTSC_M,
1573 	V4L2_STD_NTSC_M_JP,
1574 	V4L2_STD_NTSC_M_KR,
1575 	V4L2_STD_NTSC_443,
1576 	V4L2_STD_PAL_BG | V4L2_STD_PAL_H,
1577 	V4L2_STD_PAL_I,
1578 	V4L2_STD_PAL_DK,
1579 	V4L2_STD_PAL_M,
1580 	V4L2_STD_PAL_N,
1581 	V4L2_STD_PAL_Nc,
1582 	V4L2_STD_PAL_60,
1583 	V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H,
1584 	V4L2_STD_SECAM_DK,
1585 	V4L2_STD_SECAM_L,
1586 	V4L2_STD_SECAM_LC,
1587 	V4L2_STD_UNKNOWN
1588 };
1589 
1590 /* Must remain in sync with the vivid_standard array */
1591 const char * const vivid_ctrl_standard_strings[] = {
1592 	"NTSC-M",
1593 	"NTSC-M-JP",
1594 	"NTSC-M-KR",
1595 	"NTSC-443",
1596 	"PAL-BGH",
1597 	"PAL-I",
1598 	"PAL-DK",
1599 	"PAL-M",
1600 	"PAL-N",
1601 	"PAL-Nc",
1602 	"PAL-60",
1603 	"SECAM-BGH",
1604 	"SECAM-DK",
1605 	"SECAM-L",
1606 	"SECAM-Lc",
1607 	NULL,
1608 };
1609 
1610 int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *id)
1611 {
1612 	struct vivid_dev *dev = video_drvdata(file);
1613 	unsigned int last = dev->query_std_last[dev->input];
1614 
1615 	if (!vivid_is_sdtv_cap(dev))
1616 		return -ENODATA;
1617 	if (dev->std_signal_mode[dev->input] == NO_SIGNAL ||
1618 	    dev->std_signal_mode[dev->input] == NO_LOCK) {
1619 		*id = V4L2_STD_UNKNOWN;
1620 		return 0;
1621 	}
1622 	if (vivid_is_tv_cap(dev) && tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE) {
1623 		*id = V4L2_STD_UNKNOWN;
1624 	} else if (dev->std_signal_mode[dev->input] == CURRENT_STD) {
1625 		*id = dev->std_cap[dev->input];
1626 	} else if (dev->std_signal_mode[dev->input] == SELECTED_STD) {
1627 		*id = dev->query_std[dev->input];
1628 	} else {
1629 		*id = vivid_standard[last];
1630 		dev->query_std_last[dev->input] =
1631 			(last + 1) % ARRAY_SIZE(vivid_standard);
1632 	}
1633 
1634 	return 0;
1635 }
1636 
1637 int vivid_vid_cap_s_std(struct file *file, void *priv, v4l2_std_id id)
1638 {
1639 	struct vivid_dev *dev = video_drvdata(file);
1640 
1641 	if (!vivid_is_sdtv_cap(dev))
1642 		return -ENODATA;
1643 	if (dev->std_cap[dev->input] == id)
1644 		return 0;
1645 	if (vb2_is_busy(&dev->vb_vid_cap_q) || vb2_is_busy(&dev->vb_vbi_cap_q))
1646 		return -EBUSY;
1647 	dev->std_cap[dev->input] = id;
1648 	vivid_update_format_cap(dev, false);
1649 	return 0;
1650 }
1651 
1652 static void find_aspect_ratio(u32 width, u32 height,
1653 			       u32 *num, u32 *denom)
1654 {
1655 	if (!(height % 3) && ((height * 4 / 3) == width)) {
1656 		*num = 4;
1657 		*denom = 3;
1658 	} else if (!(height % 9) && ((height * 16 / 9) == width)) {
1659 		*num = 16;
1660 		*denom = 9;
1661 	} else if (!(height % 10) && ((height * 16 / 10) == width)) {
1662 		*num = 16;
1663 		*denom = 10;
1664 	} else if (!(height % 4) && ((height * 5 / 4) == width)) {
1665 		*num = 5;
1666 		*denom = 4;
1667 	} else if (!(height % 9) && ((height * 15 / 9) == width)) {
1668 		*num = 15;
1669 		*denom = 9;
1670 	} else { /* default to 16:9 */
1671 		*num = 16;
1672 		*denom = 9;
1673 	}
1674 }
1675 
1676 static bool valid_cvt_gtf_timings(struct v4l2_dv_timings *timings)
1677 {
1678 	struct v4l2_bt_timings *bt = &timings->bt;
1679 	u32 total_h_pixel;
1680 	u32 total_v_lines;
1681 	u32 h_freq;
1682 
1683 	if (!v4l2_valid_dv_timings(timings, &vivid_dv_timings_cap,
1684 				NULL, NULL))
1685 		return false;
1686 
1687 	total_h_pixel = V4L2_DV_BT_FRAME_WIDTH(bt);
1688 	total_v_lines = V4L2_DV_BT_FRAME_HEIGHT(bt);
1689 
1690 	h_freq = (u32)bt->pixelclock / total_h_pixel;
1691 
1692 	if (bt->standards == 0 || (bt->standards & V4L2_DV_BT_STD_CVT)) {
1693 		if (v4l2_detect_cvt(total_v_lines, h_freq, bt->vsync, bt->width,
1694 				    bt->polarities, bt->interlaced, timings))
1695 			return true;
1696 	}
1697 
1698 	if (bt->standards == 0 || (bt->standards & V4L2_DV_BT_STD_GTF)) {
1699 		struct v4l2_fract aspect_ratio;
1700 
1701 		find_aspect_ratio(bt->width, bt->height,
1702 				  &aspect_ratio.numerator,
1703 				  &aspect_ratio.denominator);
1704 		if (v4l2_detect_gtf(total_v_lines, h_freq, bt->vsync,
1705 				    bt->polarities, bt->interlaced,
1706 				    aspect_ratio, timings))
1707 			return true;
1708 	}
1709 	return false;
1710 }
1711 
1712 int vivid_vid_cap_s_dv_timings(struct file *file, void *_fh,
1713 				    struct v4l2_dv_timings *timings)
1714 {
1715 	struct vivid_dev *dev = video_drvdata(file);
1716 
1717 	if (!vivid_is_hdmi_cap(dev))
1718 		return -ENODATA;
1719 	if (!v4l2_find_dv_timings_cap(timings, &vivid_dv_timings_cap,
1720 				      0, NULL, NULL) &&
1721 	    !valid_cvt_gtf_timings(timings))
1722 		return -EINVAL;
1723 
1724 	if (v4l2_match_dv_timings(timings, &dev->dv_timings_cap[dev->input],
1725 				  0, false))
1726 		return 0;
1727 	if (vb2_is_busy(&dev->vb_vid_cap_q))
1728 		return -EBUSY;
1729 
1730 	dev->dv_timings_cap[dev->input] = *timings;
1731 	vivid_update_format_cap(dev, false);
1732 	return 0;
1733 }
1734 
1735 int vidioc_query_dv_timings(struct file *file, void *_fh,
1736 				    struct v4l2_dv_timings *timings)
1737 {
1738 	struct vivid_dev *dev = video_drvdata(file);
1739 	unsigned int input = dev->input;
1740 	unsigned int last = dev->query_dv_timings_last[input];
1741 
1742 	if (!vivid_is_hdmi_cap(dev))
1743 		return -ENODATA;
1744 	if (dev->dv_timings_signal_mode[input] == NO_SIGNAL ||
1745 	    dev->edid_blocks == 0)
1746 		return -ENOLINK;
1747 	if (dev->dv_timings_signal_mode[input] == NO_LOCK)
1748 		return -ENOLCK;
1749 	if (dev->dv_timings_signal_mode[input] == OUT_OF_RANGE) {
1750 		timings->bt.pixelclock = vivid_dv_timings_cap.bt.max_pixelclock * 2;
1751 		return -ERANGE;
1752 	}
1753 	if (dev->dv_timings_signal_mode[input] == CURRENT_DV_TIMINGS) {
1754 		*timings = dev->dv_timings_cap[input];
1755 	} else if (dev->dv_timings_signal_mode[input] ==
1756 		   SELECTED_DV_TIMINGS) {
1757 		*timings =
1758 			v4l2_dv_timings_presets[dev->query_dv_timings[input]];
1759 	} else {
1760 		*timings =
1761 			v4l2_dv_timings_presets[last];
1762 		dev->query_dv_timings_last[input] =
1763 			(last + 1) % dev->query_dv_timings_size;
1764 	}
1765 	return 0;
1766 }
1767 
1768 int vidioc_s_edid(struct file *file, void *_fh,
1769 			 struct v4l2_edid *edid)
1770 {
1771 	struct vivid_dev *dev = video_drvdata(file);
1772 	u16 phys_addr;
1773 	u32 display_present = 0;
1774 	unsigned int i, j;
1775 	int ret;
1776 
1777 	memset(edid->reserved, 0, sizeof(edid->reserved));
1778 	if (edid->pad >= dev->num_inputs)
1779 		return -EINVAL;
1780 	if (dev->input_type[edid->pad] != HDMI || edid->start_block)
1781 		return -EINVAL;
1782 	if (edid->blocks == 0) {
1783 		dev->edid_blocks = 0;
1784 		v4l2_ctrl_s_ctrl(dev->ctrl_tx_edid_present, 0);
1785 		v4l2_ctrl_s_ctrl(dev->ctrl_tx_hotplug, 0);
1786 		phys_addr = CEC_PHYS_ADDR_INVALID;
1787 		goto set_phys_addr;
1788 	}
1789 	if (edid->blocks > dev->edid_max_blocks) {
1790 		edid->blocks = dev->edid_max_blocks;
1791 		return -E2BIG;
1792 	}
1793 	phys_addr = cec_get_edid_phys_addr(edid->edid, edid->blocks * 128, NULL);
1794 	ret = v4l2_phys_addr_validate(phys_addr, &phys_addr, NULL);
1795 	if (ret)
1796 		return ret;
1797 
1798 	if (vb2_is_busy(&dev->vb_vid_cap_q))
1799 		return -EBUSY;
1800 
1801 	dev->edid_blocks = edid->blocks;
1802 	memcpy(dev->edid, edid->edid, edid->blocks * 128);
1803 
1804 	for (i = 0, j = 0; i < dev->num_outputs; i++)
1805 		if (dev->output_type[i] == HDMI)
1806 			display_present |=
1807 				dev->display_present[i] << j++;
1808 
1809 	v4l2_ctrl_s_ctrl(dev->ctrl_tx_edid_present, display_present);
1810 	v4l2_ctrl_s_ctrl(dev->ctrl_tx_hotplug, display_present);
1811 
1812 set_phys_addr:
1813 	/* TODO: a proper hotplug detect cycle should be emulated here */
1814 	cec_s_phys_addr(dev->cec_rx_adap, phys_addr, false);
1815 
1816 	for (i = 0; i < MAX_OUTPUTS && dev->cec_tx_adap[i]; i++)
1817 		cec_s_phys_addr(dev->cec_tx_adap[i],
1818 				dev->display_present[i] ?
1819 				v4l2_phys_addr_for_input(phys_addr, i + 1) :
1820 				CEC_PHYS_ADDR_INVALID,
1821 				false);
1822 	return 0;
1823 }
1824 
1825 int vidioc_enum_framesizes(struct file *file, void *fh,
1826 					 struct v4l2_frmsizeenum *fsize)
1827 {
1828 	struct vivid_dev *dev = video_drvdata(file);
1829 
1830 	if (!vivid_is_webcam(dev) && !dev->has_scaler_cap)
1831 		return -EINVAL;
1832 	if (vivid_get_format(dev, fsize->pixel_format) == NULL)
1833 		return -EINVAL;
1834 	if (vivid_is_webcam(dev)) {
1835 		if (fsize->index >= ARRAY_SIZE(webcam_sizes))
1836 			return -EINVAL;
1837 		fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1838 		fsize->discrete = webcam_sizes[fsize->index];
1839 		return 0;
1840 	}
1841 	if (fsize->index)
1842 		return -EINVAL;
1843 	fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
1844 	fsize->stepwise.min_width = MIN_WIDTH;
1845 	fsize->stepwise.max_width = MAX_WIDTH * MAX_ZOOM;
1846 	fsize->stepwise.step_width = 2;
1847 	fsize->stepwise.min_height = MIN_HEIGHT;
1848 	fsize->stepwise.max_height = MAX_HEIGHT * MAX_ZOOM;
1849 	fsize->stepwise.step_height = 2;
1850 	return 0;
1851 }
1852 
1853 /* timeperframe is arbitrary and continuous */
1854 int vidioc_enum_frameintervals(struct file *file, void *priv,
1855 					     struct v4l2_frmivalenum *fival)
1856 {
1857 	struct vivid_dev *dev = video_drvdata(file);
1858 	const struct vivid_fmt *fmt;
1859 	int i;
1860 
1861 	fmt = vivid_get_format(dev, fival->pixel_format);
1862 	if (!fmt)
1863 		return -EINVAL;
1864 
1865 	if (!vivid_is_webcam(dev)) {
1866 		if (fival->index)
1867 			return -EINVAL;
1868 		if (fival->width < MIN_WIDTH || fival->width > MAX_WIDTH * MAX_ZOOM)
1869 			return -EINVAL;
1870 		if (fival->height < MIN_HEIGHT || fival->height > MAX_HEIGHT * MAX_ZOOM)
1871 			return -EINVAL;
1872 		fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1873 		fival->discrete = dev->timeperframe_vid_cap;
1874 		return 0;
1875 	}
1876 
1877 	for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
1878 		if (fival->width == webcam_sizes[i].width &&
1879 		    fival->height == webcam_sizes[i].height)
1880 			break;
1881 	if (i == ARRAY_SIZE(webcam_sizes))
1882 		return -EINVAL;
1883 	if (fival->index >= 2 * (VIVID_WEBCAM_SIZES - i))
1884 		return -EINVAL;
1885 	fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1886 	fival->discrete = webcam_intervals[fival->index];
1887 	return 0;
1888 }
1889 
1890 int vivid_vid_cap_g_parm(struct file *file, void *priv,
1891 			  struct v4l2_streamparm *parm)
1892 {
1893 	struct vivid_dev *dev = video_drvdata(file);
1894 
1895 	if (parm->type != (dev->multiplanar ?
1896 			   V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1897 			   V4L2_BUF_TYPE_VIDEO_CAPTURE))
1898 		return -EINVAL;
1899 
1900 	parm->parm.capture.capability   = V4L2_CAP_TIMEPERFRAME;
1901 	parm->parm.capture.timeperframe = dev->timeperframe_vid_cap;
1902 	parm->parm.capture.readbuffers  = 1;
1903 	return 0;
1904 }
1905 
1906 int vivid_vid_cap_s_parm(struct file *file, void *priv,
1907 			  struct v4l2_streamparm *parm)
1908 {
1909 	struct vivid_dev *dev = video_drvdata(file);
1910 	unsigned ival_sz = 2 * (VIVID_WEBCAM_SIZES - dev->webcam_size_idx);
1911 	struct v4l2_fract tpf;
1912 	unsigned i;
1913 
1914 	if (parm->type != (dev->multiplanar ?
1915 			   V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1916 			   V4L2_BUF_TYPE_VIDEO_CAPTURE))
1917 		return -EINVAL;
1918 	if (!vivid_is_webcam(dev))
1919 		return vivid_vid_cap_g_parm(file, priv, parm);
1920 
1921 	tpf = parm->parm.capture.timeperframe;
1922 
1923 	if (tpf.denominator == 0)
1924 		tpf = webcam_intervals[ival_sz - 1];
1925 	for (i = 0; i < ival_sz; i++)
1926 		if (V4L2_FRACT_COMPARE(tpf, >=, webcam_intervals[i]))
1927 			break;
1928 	if (i == ival_sz)
1929 		i = ival_sz - 1;
1930 	dev->webcam_ival_idx = i;
1931 	tpf = webcam_intervals[dev->webcam_ival_idx];
1932 
1933 	/* resync the thread's timings */
1934 	dev->cap_seq_resync = true;
1935 	dev->timeperframe_vid_cap = tpf;
1936 	parm->parm.capture.capability   = V4L2_CAP_TIMEPERFRAME;
1937 	parm->parm.capture.timeperframe = tpf;
1938 	parm->parm.capture.readbuffers  = 1;
1939 	return 0;
1940 }
1941