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 
564 	fmt = vivid_get_format(dev, mp->pixelformat);
565 	if (!fmt) {
566 		dprintk(dev, 1, "Fourcc format (0x%08x) unknown.\n",
567 			mp->pixelformat);
568 		mp->pixelformat = V4L2_PIX_FMT_YUYV;
569 		fmt = vivid_get_format(dev, mp->pixelformat);
570 	}
571 
572 	mp->field = vivid_field_cap(dev, mp->field);
573 	if (vivid_is_webcam(dev)) {
574 		const struct v4l2_frmsize_discrete *sz =
575 			v4l2_find_nearest_size(webcam_sizes,
576 					       VIVID_WEBCAM_SIZES, width,
577 					       height, mp->width, mp->height);
578 
579 		w = sz->width;
580 		h = sz->height;
581 	} else if (vivid_is_sdtv_cap(dev)) {
582 		w = 720;
583 		h = (dev->std_cap[dev->input] & V4L2_STD_525_60) ? 480 : 576;
584 	} else {
585 		w = dev->src_rect.width;
586 		h = dev->src_rect.height;
587 	}
588 	if (V4L2_FIELD_HAS_T_OR_B(mp->field))
589 		factor = 2;
590 	if (vivid_is_webcam(dev) ||
591 	    (!dev->has_scaler_cap && !dev->has_crop_cap && !dev->has_compose_cap)) {
592 		mp->width = w;
593 		mp->height = h / factor;
594 	} else {
595 		struct v4l2_rect r = { 0, 0, mp->width, mp->height * factor };
596 
597 		v4l2_rect_set_min_size(&r, &vivid_min_rect);
598 		v4l2_rect_set_max_size(&r, &vivid_max_rect);
599 		if (dev->has_scaler_cap && !dev->has_compose_cap) {
600 			struct v4l2_rect max_r = { 0, 0, MAX_ZOOM * w, MAX_ZOOM * h };
601 
602 			v4l2_rect_set_max_size(&r, &max_r);
603 		} else if (!dev->has_scaler_cap && dev->has_crop_cap && !dev->has_compose_cap) {
604 			v4l2_rect_set_max_size(&r, &dev->src_rect);
605 		} else if (!dev->has_scaler_cap && !dev->has_crop_cap) {
606 			v4l2_rect_set_min_size(&r, &dev->src_rect);
607 		}
608 		mp->width = r.width;
609 		mp->height = r.height / factor;
610 	}
611 
612 	/* This driver supports custom bytesperline values */
613 
614 	mp->num_planes = fmt->buffers;
615 	for (p = 0; p < fmt->buffers; p++) {
616 		/* Calculate the minimum supported bytesperline value */
617 		bytesperline = (mp->width * fmt->bit_depth[p]) >> 3;
618 		/* Calculate the maximum supported bytesperline value */
619 		max_bpl = (MAX_ZOOM * MAX_WIDTH * fmt->bit_depth[p]) >> 3;
620 
621 		if (pfmt[p].bytesperline > max_bpl)
622 			pfmt[p].bytesperline = max_bpl;
623 		if (pfmt[p].bytesperline < bytesperline)
624 			pfmt[p].bytesperline = bytesperline;
625 
626 		pfmt[p].sizeimage = (pfmt[p].bytesperline * mp->height) /
627 				fmt->vdownsampling[p] + fmt->data_offset[p];
628 
629 		memset(pfmt[p].reserved, 0, sizeof(pfmt[p].reserved));
630 	}
631 	for (p = fmt->buffers; p < fmt->planes; p++)
632 		pfmt[0].sizeimage += (pfmt[0].bytesperline * mp->height *
633 			(fmt->bit_depth[p] / fmt->vdownsampling[p])) /
634 			(fmt->bit_depth[0] / fmt->vdownsampling[0]);
635 
636 	mp->colorspace = vivid_colorspace_cap(dev);
637 	if (fmt->color_enc == TGP_COLOR_ENC_HSV)
638 		mp->hsv_enc = vivid_hsv_enc_cap(dev);
639 	else
640 		mp->ycbcr_enc = vivid_ycbcr_enc_cap(dev);
641 	mp->xfer_func = vivid_xfer_func_cap(dev);
642 	mp->quantization = vivid_quantization_cap(dev);
643 	memset(mp->reserved, 0, sizeof(mp->reserved));
644 	return 0;
645 }
646 
647 int vivid_s_fmt_vid_cap(struct file *file, void *priv,
648 					struct v4l2_format *f)
649 {
650 	struct v4l2_pix_format_mplane *mp = &f->fmt.pix_mp;
651 	struct vivid_dev *dev = video_drvdata(file);
652 	struct v4l2_rect *crop = &dev->crop_cap;
653 	struct v4l2_rect *compose = &dev->compose_cap;
654 	struct vb2_queue *q = &dev->vb_vid_cap_q;
655 	int ret = vivid_try_fmt_vid_cap(file, priv, f);
656 	unsigned factor = 1;
657 	unsigned p;
658 	unsigned i;
659 
660 	if (ret < 0)
661 		return ret;
662 
663 	if (vb2_is_busy(q)) {
664 		dprintk(dev, 1, "%s device busy\n", __func__);
665 		return -EBUSY;
666 	}
667 
668 	if (dev->overlay_cap_owner && dev->fb_cap.fmt.pixelformat != mp->pixelformat) {
669 		dprintk(dev, 1, "overlay is active, can't change pixelformat\n");
670 		return -EBUSY;
671 	}
672 
673 	dev->fmt_cap = vivid_get_format(dev, mp->pixelformat);
674 	if (V4L2_FIELD_HAS_T_OR_B(mp->field))
675 		factor = 2;
676 
677 	/* Note: the webcam input doesn't support scaling, cropping or composing */
678 
679 	if (!vivid_is_webcam(dev) &&
680 	    (dev->has_scaler_cap || dev->has_crop_cap || dev->has_compose_cap)) {
681 		struct v4l2_rect r = { 0, 0, mp->width, mp->height };
682 
683 		if (dev->has_scaler_cap) {
684 			if (dev->has_compose_cap)
685 				v4l2_rect_map_inside(compose, &r);
686 			else
687 				*compose = r;
688 			if (dev->has_crop_cap && !dev->has_compose_cap) {
689 				struct v4l2_rect min_r = {
690 					0, 0,
691 					r.width / MAX_ZOOM,
692 					factor * r.height / MAX_ZOOM
693 				};
694 				struct v4l2_rect max_r = {
695 					0, 0,
696 					r.width * MAX_ZOOM,
697 					factor * r.height * MAX_ZOOM
698 				};
699 
700 				v4l2_rect_set_min_size(crop, &min_r);
701 				v4l2_rect_set_max_size(crop, &max_r);
702 				v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
703 			} else if (dev->has_crop_cap) {
704 				struct v4l2_rect min_r = {
705 					0, 0,
706 					compose->width / MAX_ZOOM,
707 					factor * compose->height / MAX_ZOOM
708 				};
709 				struct v4l2_rect max_r = {
710 					0, 0,
711 					compose->width * MAX_ZOOM,
712 					factor * compose->height * MAX_ZOOM
713 				};
714 
715 				v4l2_rect_set_min_size(crop, &min_r);
716 				v4l2_rect_set_max_size(crop, &max_r);
717 				v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
718 			}
719 		} else if (dev->has_crop_cap && !dev->has_compose_cap) {
720 			r.height *= factor;
721 			v4l2_rect_set_size_to(crop, &r);
722 			v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
723 			r = *crop;
724 			r.height /= factor;
725 			v4l2_rect_set_size_to(compose, &r);
726 		} else if (!dev->has_crop_cap) {
727 			v4l2_rect_map_inside(compose, &r);
728 		} else {
729 			r.height *= factor;
730 			v4l2_rect_set_max_size(crop, &r);
731 			v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
732 			compose->top *= factor;
733 			compose->height *= factor;
734 			v4l2_rect_set_size_to(compose, crop);
735 			v4l2_rect_map_inside(compose, &r);
736 			compose->top /= factor;
737 			compose->height /= factor;
738 		}
739 	} else if (vivid_is_webcam(dev)) {
740 		/* Guaranteed to be a match */
741 		for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
742 			if (webcam_sizes[i].width == mp->width &&
743 					webcam_sizes[i].height == mp->height)
744 				break;
745 		dev->webcam_size_idx = i;
746 		if (dev->webcam_ival_idx >= 2 * (VIVID_WEBCAM_SIZES - i))
747 			dev->webcam_ival_idx = 2 * (VIVID_WEBCAM_SIZES - i) - 1;
748 		vivid_update_format_cap(dev, false);
749 	} else {
750 		struct v4l2_rect r = { 0, 0, mp->width, mp->height };
751 
752 		v4l2_rect_set_size_to(compose, &r);
753 		r.height *= factor;
754 		v4l2_rect_set_size_to(crop, &r);
755 	}
756 
757 	dev->fmt_cap_rect.width = mp->width;
758 	dev->fmt_cap_rect.height = mp->height;
759 	tpg_s_buf_height(&dev->tpg, mp->height);
760 	tpg_s_fourcc(&dev->tpg, dev->fmt_cap->fourcc);
761 	for (p = 0; p < tpg_g_buffers(&dev->tpg); p++)
762 		tpg_s_bytesperline(&dev->tpg, p, mp->plane_fmt[p].bytesperline);
763 	dev->field_cap = mp->field;
764 	if (dev->field_cap == V4L2_FIELD_ALTERNATE)
765 		tpg_s_field(&dev->tpg, V4L2_FIELD_TOP, true);
766 	else
767 		tpg_s_field(&dev->tpg, dev->field_cap, false);
768 	tpg_s_crop_compose(&dev->tpg, &dev->crop_cap, &dev->compose_cap);
769 	if (vivid_is_sdtv_cap(dev))
770 		dev->tv_field_cap = mp->field;
771 	tpg_update_mv_step(&dev->tpg);
772 	return 0;
773 }
774 
775 int vidioc_g_fmt_vid_cap_mplane(struct file *file, void *priv,
776 					struct v4l2_format *f)
777 {
778 	struct vivid_dev *dev = video_drvdata(file);
779 
780 	if (!dev->multiplanar)
781 		return -ENOTTY;
782 	return vivid_g_fmt_vid_cap(file, priv, f);
783 }
784 
785 int vidioc_try_fmt_vid_cap_mplane(struct file *file, void *priv,
786 			struct v4l2_format *f)
787 {
788 	struct vivid_dev *dev = video_drvdata(file);
789 
790 	if (!dev->multiplanar)
791 		return -ENOTTY;
792 	return vivid_try_fmt_vid_cap(file, priv, f);
793 }
794 
795 int vidioc_s_fmt_vid_cap_mplane(struct file *file, void *priv,
796 			struct v4l2_format *f)
797 {
798 	struct vivid_dev *dev = video_drvdata(file);
799 
800 	if (!dev->multiplanar)
801 		return -ENOTTY;
802 	return vivid_s_fmt_vid_cap(file, priv, f);
803 }
804 
805 int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
806 					struct v4l2_format *f)
807 {
808 	struct vivid_dev *dev = video_drvdata(file);
809 
810 	if (dev->multiplanar)
811 		return -ENOTTY;
812 	return fmt_sp2mp_func(file, priv, f, vivid_g_fmt_vid_cap);
813 }
814 
815 int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
816 			struct v4l2_format *f)
817 {
818 	struct vivid_dev *dev = video_drvdata(file);
819 
820 	if (dev->multiplanar)
821 		return -ENOTTY;
822 	return fmt_sp2mp_func(file, priv, f, vivid_try_fmt_vid_cap);
823 }
824 
825 int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
826 			struct v4l2_format *f)
827 {
828 	struct vivid_dev *dev = video_drvdata(file);
829 
830 	if (dev->multiplanar)
831 		return -ENOTTY;
832 	return fmt_sp2mp_func(file, priv, f, vivid_s_fmt_vid_cap);
833 }
834 
835 int vivid_vid_cap_g_selection(struct file *file, void *priv,
836 			      struct v4l2_selection *sel)
837 {
838 	struct vivid_dev *dev = video_drvdata(file);
839 
840 	if (!dev->has_crop_cap && !dev->has_compose_cap)
841 		return -ENOTTY;
842 	if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
843 		return -EINVAL;
844 	if (vivid_is_webcam(dev))
845 		return -ENODATA;
846 
847 	sel->r.left = sel->r.top = 0;
848 	switch (sel->target) {
849 	case V4L2_SEL_TGT_CROP:
850 		if (!dev->has_crop_cap)
851 			return -EINVAL;
852 		sel->r = dev->crop_cap;
853 		break;
854 	case V4L2_SEL_TGT_CROP_DEFAULT:
855 	case V4L2_SEL_TGT_CROP_BOUNDS:
856 		if (!dev->has_crop_cap)
857 			return -EINVAL;
858 		sel->r = dev->src_rect;
859 		break;
860 	case V4L2_SEL_TGT_COMPOSE_BOUNDS:
861 		if (!dev->has_compose_cap)
862 			return -EINVAL;
863 		sel->r = vivid_max_rect;
864 		break;
865 	case V4L2_SEL_TGT_COMPOSE:
866 		if (!dev->has_compose_cap)
867 			return -EINVAL;
868 		sel->r = dev->compose_cap;
869 		break;
870 	case V4L2_SEL_TGT_COMPOSE_DEFAULT:
871 		if (!dev->has_compose_cap)
872 			return -EINVAL;
873 		sel->r = dev->fmt_cap_rect;
874 		break;
875 	default:
876 		return -EINVAL;
877 	}
878 	return 0;
879 }
880 
881 int vivid_vid_cap_s_selection(struct file *file, void *fh, struct v4l2_selection *s)
882 {
883 	struct vivid_dev *dev = video_drvdata(file);
884 	struct v4l2_rect *crop = &dev->crop_cap;
885 	struct v4l2_rect *compose = &dev->compose_cap;
886 	unsigned factor = V4L2_FIELD_HAS_T_OR_B(dev->field_cap) ? 2 : 1;
887 	int ret;
888 
889 	if (!dev->has_crop_cap && !dev->has_compose_cap)
890 		return -ENOTTY;
891 	if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
892 		return -EINVAL;
893 	if (vivid_is_webcam(dev))
894 		return -ENODATA;
895 
896 	switch (s->target) {
897 	case V4L2_SEL_TGT_CROP:
898 		if (!dev->has_crop_cap)
899 			return -EINVAL;
900 		ret = vivid_vid_adjust_sel(s->flags, &s->r);
901 		if (ret)
902 			return ret;
903 		v4l2_rect_set_min_size(&s->r, &vivid_min_rect);
904 		v4l2_rect_set_max_size(&s->r, &dev->src_rect);
905 		v4l2_rect_map_inside(&s->r, &dev->crop_bounds_cap);
906 		s->r.top /= factor;
907 		s->r.height /= factor;
908 		if (dev->has_scaler_cap) {
909 			struct v4l2_rect fmt = dev->fmt_cap_rect;
910 			struct v4l2_rect max_rect = {
911 				0, 0,
912 				s->r.width * MAX_ZOOM,
913 				s->r.height * MAX_ZOOM
914 			};
915 			struct v4l2_rect min_rect = {
916 				0, 0,
917 				s->r.width / MAX_ZOOM,
918 				s->r.height / MAX_ZOOM
919 			};
920 
921 			v4l2_rect_set_min_size(&fmt, &min_rect);
922 			if (!dev->has_compose_cap)
923 				v4l2_rect_set_max_size(&fmt, &max_rect);
924 			if (!v4l2_rect_same_size(&dev->fmt_cap_rect, &fmt) &&
925 			    vb2_is_busy(&dev->vb_vid_cap_q))
926 				return -EBUSY;
927 			if (dev->has_compose_cap) {
928 				v4l2_rect_set_min_size(compose, &min_rect);
929 				v4l2_rect_set_max_size(compose, &max_rect);
930 			}
931 			dev->fmt_cap_rect = fmt;
932 			tpg_s_buf_height(&dev->tpg, fmt.height);
933 		} else if (dev->has_compose_cap) {
934 			struct v4l2_rect fmt = dev->fmt_cap_rect;
935 
936 			v4l2_rect_set_min_size(&fmt, &s->r);
937 			if (!v4l2_rect_same_size(&dev->fmt_cap_rect, &fmt) &&
938 			    vb2_is_busy(&dev->vb_vid_cap_q))
939 				return -EBUSY;
940 			dev->fmt_cap_rect = fmt;
941 			tpg_s_buf_height(&dev->tpg, fmt.height);
942 			v4l2_rect_set_size_to(compose, &s->r);
943 			v4l2_rect_map_inside(compose, &dev->fmt_cap_rect);
944 		} else {
945 			if (!v4l2_rect_same_size(&s->r, &dev->fmt_cap_rect) &&
946 			    vb2_is_busy(&dev->vb_vid_cap_q))
947 				return -EBUSY;
948 			v4l2_rect_set_size_to(&dev->fmt_cap_rect, &s->r);
949 			v4l2_rect_set_size_to(compose, &s->r);
950 			v4l2_rect_map_inside(compose, &dev->fmt_cap_rect);
951 			tpg_s_buf_height(&dev->tpg, dev->fmt_cap_rect.height);
952 		}
953 		s->r.top *= factor;
954 		s->r.height *= factor;
955 		*crop = s->r;
956 		break;
957 	case V4L2_SEL_TGT_COMPOSE:
958 		if (!dev->has_compose_cap)
959 			return -EINVAL;
960 		ret = vivid_vid_adjust_sel(s->flags, &s->r);
961 		if (ret)
962 			return ret;
963 		v4l2_rect_set_min_size(&s->r, &vivid_min_rect);
964 		v4l2_rect_set_max_size(&s->r, &dev->fmt_cap_rect);
965 		if (dev->has_scaler_cap) {
966 			struct v4l2_rect max_rect = {
967 				0, 0,
968 				dev->src_rect.width * MAX_ZOOM,
969 				(dev->src_rect.height / factor) * MAX_ZOOM
970 			};
971 
972 			v4l2_rect_set_max_size(&s->r, &max_rect);
973 			if (dev->has_crop_cap) {
974 				struct v4l2_rect min_rect = {
975 					0, 0,
976 					s->r.width / MAX_ZOOM,
977 					(s->r.height * factor) / MAX_ZOOM
978 				};
979 				struct v4l2_rect max_rect = {
980 					0, 0,
981 					s->r.width * MAX_ZOOM,
982 					(s->r.height * factor) * MAX_ZOOM
983 				};
984 
985 				v4l2_rect_set_min_size(crop, &min_rect);
986 				v4l2_rect_set_max_size(crop, &max_rect);
987 				v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
988 			}
989 		} else if (dev->has_crop_cap) {
990 			s->r.top *= factor;
991 			s->r.height *= factor;
992 			v4l2_rect_set_max_size(&s->r, &dev->src_rect);
993 			v4l2_rect_set_size_to(crop, &s->r);
994 			v4l2_rect_map_inside(crop, &dev->crop_bounds_cap);
995 			s->r.top /= factor;
996 			s->r.height /= factor;
997 		} else {
998 			v4l2_rect_set_size_to(&s->r, &dev->src_rect);
999 			s->r.height /= factor;
1000 		}
1001 		v4l2_rect_map_inside(&s->r, &dev->fmt_cap_rect);
1002 		if (dev->bitmap_cap && (compose->width != s->r.width ||
1003 					compose->height != s->r.height)) {
1004 			vfree(dev->bitmap_cap);
1005 			dev->bitmap_cap = NULL;
1006 		}
1007 		*compose = s->r;
1008 		break;
1009 	default:
1010 		return -EINVAL;
1011 	}
1012 
1013 	tpg_s_crop_compose(&dev->tpg, crop, compose);
1014 	return 0;
1015 }
1016 
1017 int vivid_vid_cap_g_pixelaspect(struct file *file, void *priv,
1018 				int type, struct v4l2_fract *f)
1019 {
1020 	struct vivid_dev *dev = video_drvdata(file);
1021 
1022 	if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1023 		return -EINVAL;
1024 
1025 	switch (vivid_get_pixel_aspect(dev)) {
1026 	case TPG_PIXEL_ASPECT_NTSC:
1027 		f->numerator = 11;
1028 		f->denominator = 10;
1029 		break;
1030 	case TPG_PIXEL_ASPECT_PAL:
1031 		f->numerator = 54;
1032 		f->denominator = 59;
1033 		break;
1034 	default:
1035 		break;
1036 	}
1037 	return 0;
1038 }
1039 
1040 int vidioc_enum_fmt_vid_overlay(struct file *file, void  *priv,
1041 					struct v4l2_fmtdesc *f)
1042 {
1043 	struct vivid_dev *dev = video_drvdata(file);
1044 	const struct vivid_fmt *fmt;
1045 
1046 	if (dev->multiplanar)
1047 		return -ENOTTY;
1048 
1049 	if (f->index >= ARRAY_SIZE(formats_ovl))
1050 		return -EINVAL;
1051 
1052 	fmt = &formats_ovl[f->index];
1053 
1054 	f->pixelformat = fmt->fourcc;
1055 	return 0;
1056 }
1057 
1058 int vidioc_g_fmt_vid_overlay(struct file *file, void *priv,
1059 					struct v4l2_format *f)
1060 {
1061 	struct vivid_dev *dev = video_drvdata(file);
1062 	const struct v4l2_rect *compose = &dev->compose_cap;
1063 	struct v4l2_window *win = &f->fmt.win;
1064 	unsigned clipcount = win->clipcount;
1065 
1066 	if (dev->multiplanar)
1067 		return -ENOTTY;
1068 
1069 	win->w.top = dev->overlay_cap_top;
1070 	win->w.left = dev->overlay_cap_left;
1071 	win->w.width = compose->width;
1072 	win->w.height = compose->height;
1073 	win->field = dev->overlay_cap_field;
1074 	win->clipcount = dev->clipcount_cap;
1075 	if (clipcount > dev->clipcount_cap)
1076 		clipcount = dev->clipcount_cap;
1077 	if (dev->bitmap_cap == NULL)
1078 		win->bitmap = NULL;
1079 	else if (win->bitmap) {
1080 		if (copy_to_user(win->bitmap, dev->bitmap_cap,
1081 		    ((compose->width + 7) / 8) * compose->height))
1082 			return -EFAULT;
1083 	}
1084 	if (clipcount && win->clips) {
1085 		if (copy_to_user(win->clips, dev->clips_cap,
1086 				 clipcount * sizeof(dev->clips_cap[0])))
1087 			return -EFAULT;
1088 	}
1089 	return 0;
1090 }
1091 
1092 int vidioc_try_fmt_vid_overlay(struct file *file, void *priv,
1093 					struct v4l2_format *f)
1094 {
1095 	struct vivid_dev *dev = video_drvdata(file);
1096 	const struct v4l2_rect *compose = &dev->compose_cap;
1097 	struct v4l2_window *win = &f->fmt.win;
1098 	int i, j;
1099 
1100 	if (dev->multiplanar)
1101 		return -ENOTTY;
1102 
1103 	win->w.left = clamp_t(int, win->w.left,
1104 			      -dev->fb_cap.fmt.width, dev->fb_cap.fmt.width);
1105 	win->w.top = clamp_t(int, win->w.top,
1106 			     -dev->fb_cap.fmt.height, dev->fb_cap.fmt.height);
1107 	win->w.width = compose->width;
1108 	win->w.height = compose->height;
1109 	if (win->field != V4L2_FIELD_BOTTOM && win->field != V4L2_FIELD_TOP)
1110 		win->field = V4L2_FIELD_ANY;
1111 	win->chromakey = 0;
1112 	win->global_alpha = 0;
1113 	if (win->clipcount && !win->clips)
1114 		win->clipcount = 0;
1115 	if (win->clipcount > MAX_CLIPS)
1116 		win->clipcount = MAX_CLIPS;
1117 	if (win->clipcount) {
1118 		if (copy_from_user(dev->try_clips_cap, win->clips,
1119 				   win->clipcount * sizeof(dev->clips_cap[0])))
1120 			return -EFAULT;
1121 		for (i = 0; i < win->clipcount; i++) {
1122 			struct v4l2_rect *r = &dev->try_clips_cap[i].c;
1123 
1124 			r->top = clamp_t(s32, r->top, 0, dev->fb_cap.fmt.height - 1);
1125 			r->height = clamp_t(s32, r->height, 1, dev->fb_cap.fmt.height - r->top);
1126 			r->left = clamp_t(u32, r->left, 0, dev->fb_cap.fmt.width - 1);
1127 			r->width = clamp_t(u32, r->width, 1, dev->fb_cap.fmt.width - r->left);
1128 		}
1129 		/*
1130 		 * Yeah, so sue me, it's an O(n^2) algorithm. But n is a small
1131 		 * number and it's typically a one-time deal.
1132 		 */
1133 		for (i = 0; i < win->clipcount - 1; i++) {
1134 			struct v4l2_rect *r1 = &dev->try_clips_cap[i].c;
1135 
1136 			for (j = i + 1; j < win->clipcount; j++) {
1137 				struct v4l2_rect *r2 = &dev->try_clips_cap[j].c;
1138 
1139 				if (v4l2_rect_overlap(r1, r2))
1140 					return -EINVAL;
1141 			}
1142 		}
1143 		if (copy_to_user(win->clips, dev->try_clips_cap,
1144 				 win->clipcount * sizeof(dev->clips_cap[0])))
1145 			return -EFAULT;
1146 	}
1147 	return 0;
1148 }
1149 
1150 int vidioc_s_fmt_vid_overlay(struct file *file, void *priv,
1151 					struct v4l2_format *f)
1152 {
1153 	struct vivid_dev *dev = video_drvdata(file);
1154 	const struct v4l2_rect *compose = &dev->compose_cap;
1155 	struct v4l2_window *win = &f->fmt.win;
1156 	int ret = vidioc_try_fmt_vid_overlay(file, priv, f);
1157 	unsigned bitmap_size = ((compose->width + 7) / 8) * compose->height;
1158 	unsigned clips_size = win->clipcount * sizeof(dev->clips_cap[0]);
1159 	void *new_bitmap = NULL;
1160 
1161 	if (ret)
1162 		return ret;
1163 
1164 	if (win->bitmap) {
1165 		new_bitmap = vzalloc(bitmap_size);
1166 
1167 		if (new_bitmap == NULL)
1168 			return -ENOMEM;
1169 		if (copy_from_user(new_bitmap, win->bitmap, bitmap_size)) {
1170 			vfree(new_bitmap);
1171 			return -EFAULT;
1172 		}
1173 	}
1174 
1175 	dev->overlay_cap_top = win->w.top;
1176 	dev->overlay_cap_left = win->w.left;
1177 	dev->overlay_cap_field = win->field;
1178 	vfree(dev->bitmap_cap);
1179 	dev->bitmap_cap = new_bitmap;
1180 	dev->clipcount_cap = win->clipcount;
1181 	if (dev->clipcount_cap)
1182 		memcpy(dev->clips_cap, dev->try_clips_cap, clips_size);
1183 	return 0;
1184 }
1185 
1186 int vivid_vid_cap_overlay(struct file *file, void *fh, unsigned i)
1187 {
1188 	struct vivid_dev *dev = video_drvdata(file);
1189 
1190 	if (dev->multiplanar)
1191 		return -ENOTTY;
1192 
1193 	if (i && dev->fb_vbase_cap == NULL)
1194 		return -EINVAL;
1195 
1196 	if (i && dev->fb_cap.fmt.pixelformat != dev->fmt_cap->fourcc) {
1197 		dprintk(dev, 1, "mismatch between overlay and video capture pixelformats\n");
1198 		return -EINVAL;
1199 	}
1200 
1201 	if (dev->overlay_cap_owner && dev->overlay_cap_owner != fh)
1202 		return -EBUSY;
1203 	dev->overlay_cap_owner = i ? fh : NULL;
1204 	return 0;
1205 }
1206 
1207 int vivid_vid_cap_g_fbuf(struct file *file, void *fh,
1208 				struct v4l2_framebuffer *a)
1209 {
1210 	struct vivid_dev *dev = video_drvdata(file);
1211 
1212 	if (dev->multiplanar)
1213 		return -ENOTTY;
1214 
1215 	*a = dev->fb_cap;
1216 	a->capability = V4L2_FBUF_CAP_BITMAP_CLIPPING |
1217 			V4L2_FBUF_CAP_LIST_CLIPPING;
1218 	a->flags = V4L2_FBUF_FLAG_PRIMARY;
1219 	a->fmt.field = V4L2_FIELD_NONE;
1220 	a->fmt.colorspace = V4L2_COLORSPACE_SRGB;
1221 	a->fmt.priv = 0;
1222 	return 0;
1223 }
1224 
1225 int vivid_vid_cap_s_fbuf(struct file *file, void *fh,
1226 				const struct v4l2_framebuffer *a)
1227 {
1228 	struct vivid_dev *dev = video_drvdata(file);
1229 	const struct vivid_fmt *fmt;
1230 
1231 	if (dev->multiplanar)
1232 		return -ENOTTY;
1233 
1234 	if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO))
1235 		return -EPERM;
1236 
1237 	if (dev->overlay_cap_owner)
1238 		return -EBUSY;
1239 
1240 	if (a->base == NULL) {
1241 		dev->fb_cap.base = NULL;
1242 		dev->fb_vbase_cap = NULL;
1243 		return 0;
1244 	}
1245 
1246 	if (a->fmt.width < 48 || a->fmt.height < 32)
1247 		return -EINVAL;
1248 	fmt = vivid_get_format(dev, a->fmt.pixelformat);
1249 	if (!fmt || !fmt->can_do_overlay)
1250 		return -EINVAL;
1251 	if (a->fmt.bytesperline < (a->fmt.width * fmt->bit_depth[0]) / 8)
1252 		return -EINVAL;
1253 	if (a->fmt.height * a->fmt.bytesperline < a->fmt.sizeimage)
1254 		return -EINVAL;
1255 
1256 	dev->fb_vbase_cap = phys_to_virt((unsigned long)a->base);
1257 	dev->fb_cap = *a;
1258 	dev->overlay_cap_left = clamp_t(int, dev->overlay_cap_left,
1259 				    -dev->fb_cap.fmt.width, dev->fb_cap.fmt.width);
1260 	dev->overlay_cap_top = clamp_t(int, dev->overlay_cap_top,
1261 				   -dev->fb_cap.fmt.height, dev->fb_cap.fmt.height);
1262 	return 0;
1263 }
1264 
1265 static const struct v4l2_audio vivid_audio_inputs[] = {
1266 	{ 0, "TV", V4L2_AUDCAP_STEREO },
1267 	{ 1, "Line-In", V4L2_AUDCAP_STEREO },
1268 };
1269 
1270 int vidioc_enum_input(struct file *file, void *priv,
1271 				struct v4l2_input *inp)
1272 {
1273 	struct vivid_dev *dev = video_drvdata(file);
1274 
1275 	if (inp->index >= dev->num_inputs)
1276 		return -EINVAL;
1277 
1278 	inp->type = V4L2_INPUT_TYPE_CAMERA;
1279 	switch (dev->input_type[inp->index]) {
1280 	case WEBCAM:
1281 		snprintf(inp->name, sizeof(inp->name), "Webcam %u",
1282 				dev->input_name_counter[inp->index]);
1283 		inp->capabilities = 0;
1284 		break;
1285 	case TV:
1286 		snprintf(inp->name, sizeof(inp->name), "TV %u",
1287 				dev->input_name_counter[inp->index]);
1288 		inp->type = V4L2_INPUT_TYPE_TUNER;
1289 		inp->std = V4L2_STD_ALL;
1290 		if (dev->has_audio_inputs)
1291 			inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1292 		inp->capabilities = V4L2_IN_CAP_STD;
1293 		break;
1294 	case SVID:
1295 		snprintf(inp->name, sizeof(inp->name), "S-Video %u",
1296 				dev->input_name_counter[inp->index]);
1297 		inp->std = V4L2_STD_ALL;
1298 		if (dev->has_audio_inputs)
1299 			inp->audioset = (1 << ARRAY_SIZE(vivid_audio_inputs)) - 1;
1300 		inp->capabilities = V4L2_IN_CAP_STD;
1301 		break;
1302 	case HDMI:
1303 		snprintf(inp->name, sizeof(inp->name), "HDMI %u",
1304 				dev->input_name_counter[inp->index]);
1305 		inp->capabilities = V4L2_IN_CAP_DV_TIMINGS;
1306 		if (dev->edid_blocks == 0 ||
1307 		    dev->dv_timings_signal_mode[dev->input] == NO_SIGNAL)
1308 			inp->status |= V4L2_IN_ST_NO_SIGNAL;
1309 		else if (dev->dv_timings_signal_mode[dev->input] == NO_LOCK ||
1310 			 dev->dv_timings_signal_mode[dev->input] == OUT_OF_RANGE)
1311 			inp->status |= V4L2_IN_ST_NO_H_LOCK;
1312 		break;
1313 	}
1314 	if (dev->sensor_hflip)
1315 		inp->status |= V4L2_IN_ST_HFLIP;
1316 	if (dev->sensor_vflip)
1317 		inp->status |= V4L2_IN_ST_VFLIP;
1318 	if (dev->input == inp->index && vivid_is_sdtv_cap(dev)) {
1319 		if (dev->std_signal_mode[dev->input] == NO_SIGNAL) {
1320 			inp->status |= V4L2_IN_ST_NO_SIGNAL;
1321 		} else if (dev->std_signal_mode[dev->input] == NO_LOCK) {
1322 			inp->status |= V4L2_IN_ST_NO_H_LOCK;
1323 		} else if (vivid_is_tv_cap(dev)) {
1324 			switch (tpg_g_quality(&dev->tpg)) {
1325 			case TPG_QUAL_GRAY:
1326 				inp->status |= V4L2_IN_ST_COLOR_KILL;
1327 				break;
1328 			case TPG_QUAL_NOISE:
1329 				inp->status |= V4L2_IN_ST_NO_H_LOCK;
1330 				break;
1331 			default:
1332 				break;
1333 			}
1334 		}
1335 	}
1336 	return 0;
1337 }
1338 
1339 int vidioc_g_input(struct file *file, void *priv, unsigned *i)
1340 {
1341 	struct vivid_dev *dev = video_drvdata(file);
1342 
1343 	*i = dev->input;
1344 	return 0;
1345 }
1346 
1347 int vidioc_s_input(struct file *file, void *priv, unsigned i)
1348 {
1349 	struct vivid_dev *dev = video_drvdata(file);
1350 	struct v4l2_bt_timings *bt = &dev->dv_timings_cap[dev->input].bt;
1351 	unsigned brightness;
1352 
1353 	if (i >= dev->num_inputs)
1354 		return -EINVAL;
1355 
1356 	if (i == dev->input)
1357 		return 0;
1358 
1359 	if (vb2_is_busy(&dev->vb_vid_cap_q) ||
1360 	    vb2_is_busy(&dev->vb_vbi_cap_q) ||
1361 	    vb2_is_busy(&dev->vb_meta_cap_q))
1362 		return -EBUSY;
1363 
1364 	dev->input = i;
1365 	dev->vid_cap_dev.tvnorms = 0;
1366 	if (dev->input_type[i] == TV || dev->input_type[i] == SVID) {
1367 		dev->tv_audio_input = (dev->input_type[i] == TV) ? 0 : 1;
1368 		dev->vid_cap_dev.tvnorms = V4L2_STD_ALL;
1369 	}
1370 	dev->vbi_cap_dev.tvnorms = dev->vid_cap_dev.tvnorms;
1371 	dev->meta_cap_dev.tvnorms = dev->vid_cap_dev.tvnorms;
1372 	vivid_update_format_cap(dev, false);
1373 
1374 	if (dev->colorspace) {
1375 		switch (dev->input_type[i]) {
1376 		case WEBCAM:
1377 			v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
1378 			break;
1379 		case TV:
1380 		case SVID:
1381 			v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
1382 			break;
1383 		case HDMI:
1384 			if (bt->flags & V4L2_DV_FL_IS_CE_VIDEO) {
1385 				if (dev->src_rect.width == 720 && dev->src_rect.height <= 576)
1386 					v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_170M);
1387 				else
1388 					v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_709);
1389 			} else {
1390 				v4l2_ctrl_s_ctrl(dev->colorspace, VIVID_CS_SRGB);
1391 			}
1392 			break;
1393 		}
1394 	}
1395 
1396 	/*
1397 	 * Modify the brightness range depending on the input.
1398 	 * This makes it easy to use vivid to test if applications can
1399 	 * handle control range modifications and is also how this is
1400 	 * typically used in practice as different inputs may be hooked
1401 	 * up to different receivers with different control ranges.
1402 	 */
1403 	brightness = 128 * i + dev->input_brightness[i];
1404 	v4l2_ctrl_modify_range(dev->brightness,
1405 			128 * i, 255 + 128 * i, 1, 128 + 128 * i);
1406 	v4l2_ctrl_s_ctrl(dev->brightness, brightness);
1407 
1408 	/* Restore per-input states. */
1409 	v4l2_ctrl_activate(dev->ctrl_dv_timings_signal_mode,
1410 			   vivid_is_hdmi_cap(dev));
1411 	v4l2_ctrl_activate(dev->ctrl_dv_timings, vivid_is_hdmi_cap(dev) &&
1412 			   dev->dv_timings_signal_mode[dev->input] ==
1413 			   SELECTED_DV_TIMINGS);
1414 	v4l2_ctrl_activate(dev->ctrl_std_signal_mode, vivid_is_sdtv_cap(dev));
1415 	v4l2_ctrl_activate(dev->ctrl_standard, vivid_is_sdtv_cap(dev) &&
1416 			   dev->std_signal_mode[dev->input]);
1417 
1418 	if (vivid_is_hdmi_cap(dev)) {
1419 		v4l2_ctrl_s_ctrl(dev->ctrl_dv_timings_signal_mode,
1420 				 dev->dv_timings_signal_mode[dev->input]);
1421 		v4l2_ctrl_s_ctrl(dev->ctrl_dv_timings,
1422 				 dev->query_dv_timings[dev->input]);
1423 	} else if (vivid_is_sdtv_cap(dev)) {
1424 		v4l2_ctrl_s_ctrl(dev->ctrl_std_signal_mode,
1425 				 dev->std_signal_mode[dev->input]);
1426 		v4l2_ctrl_s_ctrl(dev->ctrl_standard,
1427 				 dev->std_signal_mode[dev->input]);
1428 	}
1429 
1430 	return 0;
1431 }
1432 
1433 int vidioc_enumaudio(struct file *file, void *fh, struct v4l2_audio *vin)
1434 {
1435 	if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1436 		return -EINVAL;
1437 	*vin = vivid_audio_inputs[vin->index];
1438 	return 0;
1439 }
1440 
1441 int vidioc_g_audio(struct file *file, void *fh, struct v4l2_audio *vin)
1442 {
1443 	struct vivid_dev *dev = video_drvdata(file);
1444 
1445 	if (!vivid_is_sdtv_cap(dev))
1446 		return -EINVAL;
1447 	*vin = vivid_audio_inputs[dev->tv_audio_input];
1448 	return 0;
1449 }
1450 
1451 int vidioc_s_audio(struct file *file, void *fh, const struct v4l2_audio *vin)
1452 {
1453 	struct vivid_dev *dev = video_drvdata(file);
1454 
1455 	if (!vivid_is_sdtv_cap(dev))
1456 		return -EINVAL;
1457 	if (vin->index >= ARRAY_SIZE(vivid_audio_inputs))
1458 		return -EINVAL;
1459 	dev->tv_audio_input = vin->index;
1460 	return 0;
1461 }
1462 
1463 int vivid_video_g_frequency(struct file *file, void *fh, struct v4l2_frequency *vf)
1464 {
1465 	struct vivid_dev *dev = video_drvdata(file);
1466 
1467 	if (vf->tuner != 0)
1468 		return -EINVAL;
1469 	vf->frequency = dev->tv_freq;
1470 	return 0;
1471 }
1472 
1473 int vivid_video_s_frequency(struct file *file, void *fh, const struct v4l2_frequency *vf)
1474 {
1475 	struct vivid_dev *dev = video_drvdata(file);
1476 
1477 	if (vf->tuner != 0)
1478 		return -EINVAL;
1479 	dev->tv_freq = clamp_t(unsigned, vf->frequency, MIN_TV_FREQ, MAX_TV_FREQ);
1480 	if (vivid_is_tv_cap(dev))
1481 		vivid_update_quality(dev);
1482 	return 0;
1483 }
1484 
1485 int vivid_video_s_tuner(struct file *file, void *fh, const struct v4l2_tuner *vt)
1486 {
1487 	struct vivid_dev *dev = video_drvdata(file);
1488 
1489 	if (vt->index != 0)
1490 		return -EINVAL;
1491 	if (vt->audmode > V4L2_TUNER_MODE_LANG1_LANG2)
1492 		return -EINVAL;
1493 	dev->tv_audmode = vt->audmode;
1494 	return 0;
1495 }
1496 
1497 int vivid_video_g_tuner(struct file *file, void *fh, struct v4l2_tuner *vt)
1498 {
1499 	struct vivid_dev *dev = video_drvdata(file);
1500 	enum tpg_quality qual;
1501 
1502 	if (vt->index != 0)
1503 		return -EINVAL;
1504 
1505 	vt->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO |
1506 			 V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
1507 	vt->audmode = dev->tv_audmode;
1508 	vt->rangelow = MIN_TV_FREQ;
1509 	vt->rangehigh = MAX_TV_FREQ;
1510 	qual = vivid_get_quality(dev, &vt->afc);
1511 	if (qual == TPG_QUAL_COLOR)
1512 		vt->signal = 0xffff;
1513 	else if (qual == TPG_QUAL_GRAY)
1514 		vt->signal = 0x8000;
1515 	else
1516 		vt->signal = 0;
1517 	if (qual == TPG_QUAL_NOISE) {
1518 		vt->rxsubchans = 0;
1519 	} else if (qual == TPG_QUAL_GRAY) {
1520 		vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1521 	} else {
1522 		unsigned int channel_nr = dev->tv_freq / (6 * 16);
1523 		unsigned int options =
1524 			(dev->std_cap[dev->input] & V4L2_STD_NTSC_M) ? 4 : 3;
1525 
1526 		switch (channel_nr % options) {
1527 		case 0:
1528 			vt->rxsubchans = V4L2_TUNER_SUB_MONO;
1529 			break;
1530 		case 1:
1531 			vt->rxsubchans = V4L2_TUNER_SUB_STEREO;
1532 			break;
1533 		case 2:
1534 			if (dev->std_cap[dev->input] & V4L2_STD_NTSC_M)
1535 				vt->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_SAP;
1536 			else
1537 				vt->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1538 			break;
1539 		case 3:
1540 			vt->rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_SAP;
1541 			break;
1542 		}
1543 	}
1544 	strscpy(vt->name, "TV Tuner", sizeof(vt->name));
1545 	return 0;
1546 }
1547 
1548 /* Must remain in sync with the vivid_ctrl_standard_strings array */
1549 const v4l2_std_id vivid_standard[] = {
1550 	V4L2_STD_NTSC_M,
1551 	V4L2_STD_NTSC_M_JP,
1552 	V4L2_STD_NTSC_M_KR,
1553 	V4L2_STD_NTSC_443,
1554 	V4L2_STD_PAL_BG | V4L2_STD_PAL_H,
1555 	V4L2_STD_PAL_I,
1556 	V4L2_STD_PAL_DK,
1557 	V4L2_STD_PAL_M,
1558 	V4L2_STD_PAL_N,
1559 	V4L2_STD_PAL_Nc,
1560 	V4L2_STD_PAL_60,
1561 	V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H,
1562 	V4L2_STD_SECAM_DK,
1563 	V4L2_STD_SECAM_L,
1564 	V4L2_STD_SECAM_LC,
1565 	V4L2_STD_UNKNOWN
1566 };
1567 
1568 /* Must remain in sync with the vivid_standard array */
1569 const char * const vivid_ctrl_standard_strings[] = {
1570 	"NTSC-M",
1571 	"NTSC-M-JP",
1572 	"NTSC-M-KR",
1573 	"NTSC-443",
1574 	"PAL-BGH",
1575 	"PAL-I",
1576 	"PAL-DK",
1577 	"PAL-M",
1578 	"PAL-N",
1579 	"PAL-Nc",
1580 	"PAL-60",
1581 	"SECAM-BGH",
1582 	"SECAM-DK",
1583 	"SECAM-L",
1584 	"SECAM-Lc",
1585 	NULL,
1586 };
1587 
1588 int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *id)
1589 {
1590 	struct vivid_dev *dev = video_drvdata(file);
1591 	unsigned int last = dev->query_std_last[dev->input];
1592 
1593 	if (!vivid_is_sdtv_cap(dev))
1594 		return -ENODATA;
1595 	if (dev->std_signal_mode[dev->input] == NO_SIGNAL ||
1596 	    dev->std_signal_mode[dev->input] == NO_LOCK) {
1597 		*id = V4L2_STD_UNKNOWN;
1598 		return 0;
1599 	}
1600 	if (vivid_is_tv_cap(dev) && tpg_g_quality(&dev->tpg) == TPG_QUAL_NOISE) {
1601 		*id = V4L2_STD_UNKNOWN;
1602 	} else if (dev->std_signal_mode[dev->input] == CURRENT_STD) {
1603 		*id = dev->std_cap[dev->input];
1604 	} else if (dev->std_signal_mode[dev->input] == SELECTED_STD) {
1605 		*id = dev->query_std[dev->input];
1606 	} else {
1607 		*id = vivid_standard[last];
1608 		dev->query_std_last[dev->input] =
1609 			(last + 1) % ARRAY_SIZE(vivid_standard);
1610 	}
1611 
1612 	return 0;
1613 }
1614 
1615 int vivid_vid_cap_s_std(struct file *file, void *priv, v4l2_std_id id)
1616 {
1617 	struct vivid_dev *dev = video_drvdata(file);
1618 
1619 	if (!vivid_is_sdtv_cap(dev))
1620 		return -ENODATA;
1621 	if (dev->std_cap[dev->input] == id)
1622 		return 0;
1623 	if (vb2_is_busy(&dev->vb_vid_cap_q) || vb2_is_busy(&dev->vb_vbi_cap_q))
1624 		return -EBUSY;
1625 	dev->std_cap[dev->input] = id;
1626 	vivid_update_format_cap(dev, false);
1627 	return 0;
1628 }
1629 
1630 static void find_aspect_ratio(u32 width, u32 height,
1631 			       u32 *num, u32 *denom)
1632 {
1633 	if (!(height % 3) && ((height * 4 / 3) == width)) {
1634 		*num = 4;
1635 		*denom = 3;
1636 	} else if (!(height % 9) && ((height * 16 / 9) == width)) {
1637 		*num = 16;
1638 		*denom = 9;
1639 	} else if (!(height % 10) && ((height * 16 / 10) == width)) {
1640 		*num = 16;
1641 		*denom = 10;
1642 	} else if (!(height % 4) && ((height * 5 / 4) == width)) {
1643 		*num = 5;
1644 		*denom = 4;
1645 	} else if (!(height % 9) && ((height * 15 / 9) == width)) {
1646 		*num = 15;
1647 		*denom = 9;
1648 	} else { /* default to 16:9 */
1649 		*num = 16;
1650 		*denom = 9;
1651 	}
1652 }
1653 
1654 static bool valid_cvt_gtf_timings(struct v4l2_dv_timings *timings)
1655 {
1656 	struct v4l2_bt_timings *bt = &timings->bt;
1657 	u32 total_h_pixel;
1658 	u32 total_v_lines;
1659 	u32 h_freq;
1660 
1661 	if (!v4l2_valid_dv_timings(timings, &vivid_dv_timings_cap,
1662 				NULL, NULL))
1663 		return false;
1664 
1665 	total_h_pixel = V4L2_DV_BT_FRAME_WIDTH(bt);
1666 	total_v_lines = V4L2_DV_BT_FRAME_HEIGHT(bt);
1667 
1668 	h_freq = (u32)bt->pixelclock / total_h_pixel;
1669 
1670 	if (bt->standards == 0 || (bt->standards & V4L2_DV_BT_STD_CVT)) {
1671 		if (v4l2_detect_cvt(total_v_lines, h_freq, bt->vsync, bt->width,
1672 				    bt->polarities, bt->interlaced, timings))
1673 			return true;
1674 	}
1675 
1676 	if (bt->standards == 0 || (bt->standards & V4L2_DV_BT_STD_GTF)) {
1677 		struct v4l2_fract aspect_ratio;
1678 
1679 		find_aspect_ratio(bt->width, bt->height,
1680 				  &aspect_ratio.numerator,
1681 				  &aspect_ratio.denominator);
1682 		if (v4l2_detect_gtf(total_v_lines, h_freq, bt->vsync,
1683 				    bt->polarities, bt->interlaced,
1684 				    aspect_ratio, timings))
1685 			return true;
1686 	}
1687 	return false;
1688 }
1689 
1690 int vivid_vid_cap_s_dv_timings(struct file *file, void *_fh,
1691 				    struct v4l2_dv_timings *timings)
1692 {
1693 	struct vivid_dev *dev = video_drvdata(file);
1694 
1695 	if (!vivid_is_hdmi_cap(dev))
1696 		return -ENODATA;
1697 	if (!v4l2_find_dv_timings_cap(timings, &vivid_dv_timings_cap,
1698 				      0, NULL, NULL) &&
1699 	    !valid_cvt_gtf_timings(timings))
1700 		return -EINVAL;
1701 
1702 	if (v4l2_match_dv_timings(timings, &dev->dv_timings_cap[dev->input],
1703 				  0, false))
1704 		return 0;
1705 	if (vb2_is_busy(&dev->vb_vid_cap_q))
1706 		return -EBUSY;
1707 
1708 	dev->dv_timings_cap[dev->input] = *timings;
1709 	vivid_update_format_cap(dev, false);
1710 	return 0;
1711 }
1712 
1713 int vidioc_query_dv_timings(struct file *file, void *_fh,
1714 				    struct v4l2_dv_timings *timings)
1715 {
1716 	struct vivid_dev *dev = video_drvdata(file);
1717 	unsigned int input = dev->input;
1718 	unsigned int last = dev->query_dv_timings_last[input];
1719 
1720 	if (!vivid_is_hdmi_cap(dev))
1721 		return -ENODATA;
1722 	if (dev->dv_timings_signal_mode[input] == NO_SIGNAL ||
1723 	    dev->edid_blocks == 0)
1724 		return -ENOLINK;
1725 	if (dev->dv_timings_signal_mode[input] == NO_LOCK)
1726 		return -ENOLCK;
1727 	if (dev->dv_timings_signal_mode[input] == OUT_OF_RANGE) {
1728 		timings->bt.pixelclock = vivid_dv_timings_cap.bt.max_pixelclock * 2;
1729 		return -ERANGE;
1730 	}
1731 	if (dev->dv_timings_signal_mode[input] == CURRENT_DV_TIMINGS) {
1732 		*timings = dev->dv_timings_cap[input];
1733 	} else if (dev->dv_timings_signal_mode[input] ==
1734 		   SELECTED_DV_TIMINGS) {
1735 		*timings =
1736 			v4l2_dv_timings_presets[dev->query_dv_timings[input]];
1737 	} else {
1738 		*timings =
1739 			v4l2_dv_timings_presets[last];
1740 		dev->query_dv_timings_last[input] =
1741 			(last + 1) % dev->query_dv_timings_size;
1742 	}
1743 	return 0;
1744 }
1745 
1746 int vidioc_s_edid(struct file *file, void *_fh,
1747 			 struct v4l2_edid *edid)
1748 {
1749 	struct vivid_dev *dev = video_drvdata(file);
1750 	u16 phys_addr;
1751 	u32 display_present = 0;
1752 	unsigned int i, j;
1753 	int ret;
1754 
1755 	memset(edid->reserved, 0, sizeof(edid->reserved));
1756 	if (edid->pad >= dev->num_inputs)
1757 		return -EINVAL;
1758 	if (dev->input_type[edid->pad] != HDMI || edid->start_block)
1759 		return -EINVAL;
1760 	if (edid->blocks == 0) {
1761 		dev->edid_blocks = 0;
1762 		v4l2_ctrl_s_ctrl(dev->ctrl_tx_edid_present, 0);
1763 		v4l2_ctrl_s_ctrl(dev->ctrl_tx_hotplug, 0);
1764 		phys_addr = CEC_PHYS_ADDR_INVALID;
1765 		goto set_phys_addr;
1766 	}
1767 	if (edid->blocks > dev->edid_max_blocks) {
1768 		edid->blocks = dev->edid_max_blocks;
1769 		return -E2BIG;
1770 	}
1771 	phys_addr = cec_get_edid_phys_addr(edid->edid, edid->blocks * 128, NULL);
1772 	ret = v4l2_phys_addr_validate(phys_addr, &phys_addr, NULL);
1773 	if (ret)
1774 		return ret;
1775 
1776 	if (vb2_is_busy(&dev->vb_vid_cap_q))
1777 		return -EBUSY;
1778 
1779 	dev->edid_blocks = edid->blocks;
1780 	memcpy(dev->edid, edid->edid, edid->blocks * 128);
1781 
1782 	for (i = 0, j = 0; i < dev->num_outputs; i++)
1783 		if (dev->output_type[i] == HDMI)
1784 			display_present |=
1785 				dev->display_present[i] << j++;
1786 
1787 	v4l2_ctrl_s_ctrl(dev->ctrl_tx_edid_present, display_present);
1788 	v4l2_ctrl_s_ctrl(dev->ctrl_tx_hotplug, display_present);
1789 
1790 set_phys_addr:
1791 	/* TODO: a proper hotplug detect cycle should be emulated here */
1792 	cec_s_phys_addr(dev->cec_rx_adap, phys_addr, false);
1793 
1794 	for (i = 0; i < MAX_OUTPUTS && dev->cec_tx_adap[i]; i++)
1795 		cec_s_phys_addr(dev->cec_tx_adap[i],
1796 				dev->display_present[i] ?
1797 				v4l2_phys_addr_for_input(phys_addr, i + 1) :
1798 				CEC_PHYS_ADDR_INVALID,
1799 				false);
1800 	return 0;
1801 }
1802 
1803 int vidioc_enum_framesizes(struct file *file, void *fh,
1804 					 struct v4l2_frmsizeenum *fsize)
1805 {
1806 	struct vivid_dev *dev = video_drvdata(file);
1807 
1808 	if (!vivid_is_webcam(dev) && !dev->has_scaler_cap)
1809 		return -EINVAL;
1810 	if (vivid_get_format(dev, fsize->pixel_format) == NULL)
1811 		return -EINVAL;
1812 	if (vivid_is_webcam(dev)) {
1813 		if (fsize->index >= ARRAY_SIZE(webcam_sizes))
1814 			return -EINVAL;
1815 		fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1816 		fsize->discrete = webcam_sizes[fsize->index];
1817 		return 0;
1818 	}
1819 	if (fsize->index)
1820 		return -EINVAL;
1821 	fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
1822 	fsize->stepwise.min_width = MIN_WIDTH;
1823 	fsize->stepwise.max_width = MAX_WIDTH * MAX_ZOOM;
1824 	fsize->stepwise.step_width = 2;
1825 	fsize->stepwise.min_height = MIN_HEIGHT;
1826 	fsize->stepwise.max_height = MAX_HEIGHT * MAX_ZOOM;
1827 	fsize->stepwise.step_height = 2;
1828 	return 0;
1829 }
1830 
1831 /* timeperframe is arbitrary and continuous */
1832 int vidioc_enum_frameintervals(struct file *file, void *priv,
1833 					     struct v4l2_frmivalenum *fival)
1834 {
1835 	struct vivid_dev *dev = video_drvdata(file);
1836 	const struct vivid_fmt *fmt;
1837 	int i;
1838 
1839 	fmt = vivid_get_format(dev, fival->pixel_format);
1840 	if (!fmt)
1841 		return -EINVAL;
1842 
1843 	if (!vivid_is_webcam(dev)) {
1844 		if (fival->index)
1845 			return -EINVAL;
1846 		if (fival->width < MIN_WIDTH || fival->width > MAX_WIDTH * MAX_ZOOM)
1847 			return -EINVAL;
1848 		if (fival->height < MIN_HEIGHT || fival->height > MAX_HEIGHT * MAX_ZOOM)
1849 			return -EINVAL;
1850 		fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1851 		fival->discrete = dev->timeperframe_vid_cap;
1852 		return 0;
1853 	}
1854 
1855 	for (i = 0; i < ARRAY_SIZE(webcam_sizes); i++)
1856 		if (fival->width == webcam_sizes[i].width &&
1857 		    fival->height == webcam_sizes[i].height)
1858 			break;
1859 	if (i == ARRAY_SIZE(webcam_sizes))
1860 		return -EINVAL;
1861 	if (fival->index >= 2 * (VIVID_WEBCAM_SIZES - i))
1862 		return -EINVAL;
1863 	fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1864 	fival->discrete = webcam_intervals[fival->index];
1865 	return 0;
1866 }
1867 
1868 int vivid_vid_cap_g_parm(struct file *file, void *priv,
1869 			  struct v4l2_streamparm *parm)
1870 {
1871 	struct vivid_dev *dev = video_drvdata(file);
1872 
1873 	if (parm->type != (dev->multiplanar ?
1874 			   V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1875 			   V4L2_BUF_TYPE_VIDEO_CAPTURE))
1876 		return -EINVAL;
1877 
1878 	parm->parm.capture.capability   = V4L2_CAP_TIMEPERFRAME;
1879 	parm->parm.capture.timeperframe = dev->timeperframe_vid_cap;
1880 	parm->parm.capture.readbuffers  = 1;
1881 	return 0;
1882 }
1883 
1884 int vivid_vid_cap_s_parm(struct file *file, void *priv,
1885 			  struct v4l2_streamparm *parm)
1886 {
1887 	struct vivid_dev *dev = video_drvdata(file);
1888 	unsigned ival_sz = 2 * (VIVID_WEBCAM_SIZES - dev->webcam_size_idx);
1889 	struct v4l2_fract tpf;
1890 	unsigned i;
1891 
1892 	if (parm->type != (dev->multiplanar ?
1893 			   V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1894 			   V4L2_BUF_TYPE_VIDEO_CAPTURE))
1895 		return -EINVAL;
1896 	if (!vivid_is_webcam(dev))
1897 		return vivid_vid_cap_g_parm(file, priv, parm);
1898 
1899 	tpf = parm->parm.capture.timeperframe;
1900 
1901 	if (tpf.denominator == 0)
1902 		tpf = webcam_intervals[ival_sz - 1];
1903 	for (i = 0; i < ival_sz; i++)
1904 		if (V4L2_FRACT_COMPARE(tpf, >=, webcam_intervals[i]))
1905 			break;
1906 	if (i == ival_sz)
1907 		i = ival_sz - 1;
1908 	dev->webcam_ival_idx = i;
1909 	tpf = webcam_intervals[dev->webcam_ival_idx];
1910 
1911 	/* resync the thread's timings */
1912 	dev->cap_seq_resync = true;
1913 	dev->timeperframe_vid_cap = tpf;
1914 	parm->parm.capture.capability   = V4L2_CAP_TIMEPERFRAME;
1915 	parm->parm.capture.timeperframe = tpf;
1916 	parm->parm.capture.readbuffers  = 1;
1917 	return 0;
1918 }
1919