1	// SPDX-License-Identifier: GPL-2.0-or-later
2	/*
3	* Video capture interface for Linux version 2
4	*
5	* A generic framework to process V4L2 ioctl commands.
6	*
7	* Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1)
8	* Mauro Carvalho Chehab <mchehab@kernel.org> (version 2)
9	*/
10
11	#include <linux/compat.h>
12	#include <linux/mm.h>
13	#include <linux/module.h>
14	#include <linux/slab.h>
15	#include <linux/types.h>
16	#include <linux/kernel.h>
17	#include <linux/version.h>
18
19	#include <linux/v4l2-subdev.h>
20	#include <linux/videodev2.h>
21
22	#include <media/media-device.h> /* for media_set_bus_info() */
23	#include <media/v4l2-common.h>
24	#include <media/v4l2-ioctl.h>
25	#include <media/v4l2-ctrls.h>
26	#include <media/v4l2-fh.h>
27	#include <media/v4l2-event.h>
28	#include <media/v4l2-device.h>
29	#include <media/videobuf2-v4l2.h>
30	#include <media/v4l2-mc.h>
31	#include <media/v4l2-mem2mem.h>
32
33	#include <trace/events/v4l2.h>
34
35	#define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls)
36
37	struct std_descr {
38	v4l2_std_id std;
39	const char *descr;
40	};
41
42	static const struct std_descr standards[] = {
43	{ V4L2_STD_NTSC, "NTSC" },
44	{ V4L2_STD_NTSC_M, "NTSC-M" },
45	{ V4L2_STD_NTSC_M_JP, "NTSC-M-JP" },
46	{ V4L2_STD_NTSC_M_KR, "NTSC-M-KR" },
47	{ V4L2_STD_NTSC_443, "NTSC-443" },
48	{ V4L2_STD_PAL, "PAL" },
49	{ V4L2_STD_PAL_BG, "PAL-BG" },
50	{ V4L2_STD_PAL_B, "PAL-B" },
51	{ V4L2_STD_PAL_B1, "PAL-B1" },
52	{ V4L2_STD_PAL_G, "PAL-G" },
53	{ V4L2_STD_PAL_H, "PAL-H" },
54	{ V4L2_STD_PAL_I, "PAL-I" },
55	{ V4L2_STD_PAL_DK, "PAL-DK" },
56	{ V4L2_STD_PAL_D, "PAL-D" },
57	{ V4L2_STD_PAL_D1, "PAL-D1" },
58	{ V4L2_STD_PAL_K, "PAL-K" },
59	{ V4L2_STD_PAL_M, "PAL-M" },
60	{ V4L2_STD_PAL_N, "PAL-N" },
61	{ V4L2_STD_PAL_Nc, "PAL-Nc" },
62	{ V4L2_STD_PAL_60, "PAL-60" },
63	{ V4L2_STD_SECAM, "SECAM" },
64	{ V4L2_STD_SECAM_B, "SECAM-B" },
65	{ V4L2_STD_SECAM_G, "SECAM-G" },
66	{ V4L2_STD_SECAM_H, "SECAM-H" },
67	{ V4L2_STD_SECAM_DK, "SECAM-DK" },
68	{ V4L2_STD_SECAM_D, "SECAM-D" },
69	{ V4L2_STD_SECAM_K, "SECAM-K" },
70	{ V4L2_STD_SECAM_K1, "SECAM-K1" },
71	{ V4L2_STD_SECAM_L, "SECAM-L" },
72	{ V4L2_STD_SECAM_LC, "SECAM-Lc" },
73	{ 0, "Unknown" }
74	};
75
76	/* video4linux standard ID conversion to standard name
77	*/
78	const char *v4l2_norm_to_name(v4l2_std_id id)
79	{
80	u32 myid = id;
81	int i;
82
83	/* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
84	64 bit comparisons. So, on that architecture, with some gcc
85	variants, compilation fails. Currently, the max value is 30bit wide.
86	*/
87	BUG_ON(myid != id);
88
89	for (i = 0; standards[i].std; i++)
90	if (myid == standards[i].std)
91	break;
92	return standards[i].descr;
93	}
94	EXPORT_SYMBOL(v4l2_norm_to_name);
95
96	/* Returns frame period for the given standard */
97	void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod)
98	{
99	if (id & V4L2_STD_525_60) {
100	frameperiod->numerator = 1001;
101	frameperiod->denominator = 30000;
102	} else {
103	frameperiod->numerator = 1;
104	frameperiod->denominator = 25;
105	}
106	}
107	EXPORT_SYMBOL(v4l2_video_std_frame_period);
108
109	/* Fill in the fields of a v4l2_standard structure according to the
110	'id' and 'transmission' parameters. Returns negative on error. */
111	int v4l2_video_std_construct(struct v4l2_standard *vs,
112	int id, const char *name)
113	{
114	vs->id = id;
115	v4l2_video_std_frame_period(id, &vs->frameperiod);
116	vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625;
117	strscpy(vs->name, name, sizeof(vs->name));
118	return 0;
119	}
120	EXPORT_SYMBOL(v4l2_video_std_construct);
121
122	/* Fill in the fields of a v4l2_standard structure according to the
123	* 'id' and 'vs->index' parameters. Returns negative on error. */
124	int v4l_video_std_enumstd(struct v4l2_standard *vs, v4l2_std_id id)
125	{
126	v4l2_std_id curr_id = 0;
127	unsigned int index = vs->index, i, j = 0;
128	const char *descr = "";
129
130	/* Return -ENODATA if the id for the current input
131	or output is 0, meaning that it doesn't support this API. */
132	if (id == 0)
133	return -ENODATA;
134
135	/* Return norm array in a canonical way */
136	for (i = 0; i <= index && id; i++) {
137	/* last std value in the standards array is 0, so this
138	while always ends there since (id & 0) == 0. */
139	while ((id & standards[j].std) != standards[j].std)
140	j++;
141	curr_id = standards[j].std;
142	descr = standards[j].descr;
143	j++;
144	if (curr_id == 0)
145	break;
146	if (curr_id != V4L2_STD_PAL &&
147	curr_id != V4L2_STD_SECAM &&
148	curr_id != V4L2_STD_NTSC)
149	id &= ~curr_id;
150	}
151	if (i <= index)
152	return -EINVAL;
153
154	v4l2_video_std_construct(vs, curr_id, descr);
155	return 0;
156	}
157
158	/* ----------------------------------------------------------------- */
159	/* some arrays for pretty-printing debug messages of enum types */
160
161	const char *v4l2_field_names[] = {
162	[V4L2_FIELD_ANY] = "any",
163	[V4L2_FIELD_NONE] = "none",
164	[V4L2_FIELD_TOP] = "top",
165	[V4L2_FIELD_BOTTOM] = "bottom",
166	[V4L2_FIELD_INTERLACED] = "interlaced",
167	[V4L2_FIELD_SEQ_TB] = "seq-tb",
168	[V4L2_FIELD_SEQ_BT] = "seq-bt",
169	[V4L2_FIELD_ALTERNATE] = "alternate",
170	[V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",
171	[V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",
172	};
173	EXPORT_SYMBOL(v4l2_field_names);
174
175	const char *v4l2_type_names[] = {
176	[0] = "0",
177	[V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap",
178	[V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay",
179	[V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out",
180	[V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap",
181	[V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out",
182	[V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",
183	[V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out",
184	[V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay",
185	[V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane",
186	[V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane",
187	[V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap",
188	[V4L2_BUF_TYPE_SDR_OUTPUT] = "sdr-out",
189	[V4L2_BUF_TYPE_META_CAPTURE] = "meta-cap",
190	[V4L2_BUF_TYPE_META_OUTPUT] = "meta-out",
191	};
192	EXPORT_SYMBOL(v4l2_type_names);
193
194	static const char *v4l2_memory_names[] = {
195	[V4L2_MEMORY_MMAP] = "mmap",
196	[V4L2_MEMORY_USERPTR] = "userptr",
197	[V4L2_MEMORY_OVERLAY] = "overlay",
198	[V4L2_MEMORY_DMABUF] = "dmabuf",
199	};
200
201	#define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown")
202
203	/* ------------------------------------------------------------------ */
204	/* debug help functions */
205
206	static void v4l_print_querycap(const void *arg, bool write_only)
207	{
208	const struct v4l2_capability *p = arg;
209
210	pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, capabilities=0x%08x, device_caps=0x%08x\n",
211	(int)sizeof(p->driver), p->driver,
212	(int)sizeof(p->card), p->card,
213	(int)sizeof(p->bus_info), p->bus_info,
214	p->version, p->capabilities, p->device_caps);
215	}
216
217	static void v4l_print_enuminput(const void *arg, bool write_only)
218	{
219	const struct v4l2_input *p = arg;
220
221	pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, std=0x%08Lx, status=0x%x, capabilities=0x%x\n",
222	p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
223	p->tuner, (unsigned long long)p->std, p->status,
224	p->capabilities);
225	}
226
227	static void v4l_print_enumoutput(const void *arg, bool write_only)
228	{
229	const struct v4l2_output *p = arg;
230
231	pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, modulator=%u, std=0x%08Lx, capabilities=0x%x\n",
232	p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
233	p->modulator, (unsigned long long)p->std, p->capabilities);
234	}
235
236	static void v4l_print_audio(const void *arg, bool write_only)
237	{
238	const struct v4l2_audio *p = arg;
239
240	if (write_only)
241	pr_cont("index=%u, mode=0x%x\n", p->index, p->mode);
242	else
243	pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
244	p->index, (int)sizeof(p->name), p->name,
245	p->capability, p->mode);
246	}
247
248	static void v4l_print_audioout(const void *arg, bool write_only)
249	{
250	const struct v4l2_audioout *p = arg;
251
252	if (write_only)
253	pr_cont("index=%u\n", p->index);
254	else
255	pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
256	p->index, (int)sizeof(p->name), p->name,
257	p->capability, p->mode);
258	}
259
260	static void v4l_print_fmtdesc(const void *arg, bool write_only)
261	{
262	const struct v4l2_fmtdesc *p = arg;
263
264	pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%p4cc, mbus_code=0x%04x, description='%.*s'\n",
265	p->index, prt_names(p->type, v4l2_type_names),
266	p->flags, &p->pixelformat, p->mbus_code,
267	(int)sizeof(p->description), p->description);
268	}
269
270	static void v4l_print_format(const void *arg, bool write_only)
271	{
272	const struct v4l2_format *p = arg;
273	const struct v4l2_pix_format *pix;
274	const struct v4l2_pix_format_mplane *mp;
275	const struct v4l2_vbi_format *vbi;
276	const struct v4l2_sliced_vbi_format *sliced;
277	const struct v4l2_window *win;
278	const struct v4l2_meta_format *meta;
279	u32 pixelformat;
280	u32 planes;
281	unsigned i;
282
283	pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
284	switch (p->type) {
285	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
286	case V4L2_BUF_TYPE_VIDEO_OUTPUT:
287	pix = &p->fmt.pix;
288	pr_cont(", width=%u, height=%u, pixelformat=%p4cc, field=%s, bytesperline=%u, sizeimage=%u, colorspace=%d, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",
289	pix->width, pix->height, &pix->pixelformat,
290	prt_names(pix->field, v4l2_field_names),
291	pix->bytesperline, pix->sizeimage,
292	pix->colorspace, pix->flags, pix->ycbcr_enc,
293	pix->quantization, pix->xfer_func);
294	break;
295	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
296	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
297	mp = &p->fmt.pix_mp;
298	pixelformat = mp->pixelformat;
299	pr_cont(", width=%u, height=%u, format=%p4cc, field=%s, colorspace=%d, num_planes=%u, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",
300	mp->width, mp->height, &pixelformat,
301	prt_names(mp->field, v4l2_field_names),
302	mp->colorspace, mp->num_planes, mp->flags,
303	mp->ycbcr_enc, mp->quantization, mp->xfer_func);
304	planes = min_t(u32, mp->num_planes, VIDEO_MAX_PLANES);
305	for (i = 0; i < planes; i++)
306	printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i,
307	mp->plane_fmt[i].bytesperline,
308	mp->plane_fmt[i].sizeimage);
309	break;
310	case V4L2_BUF_TYPE_VIDEO_OVERLAY:
311	case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
312	win = &p->fmt.win;
313	pr_cont(", (%d,%d)/%ux%u, field=%s, chromakey=0x%08x, global_alpha=0x%02x\n",
314	win->w.left, win->w.top, win->w.width, win->w.height,
315	prt_names(win->field, v4l2_field_names),
316	win->chromakey, win->global_alpha);
317	break;
318	case V4L2_BUF_TYPE_VBI_CAPTURE:
319	case V4L2_BUF_TYPE_VBI_OUTPUT:
320	vbi = &p->fmt.vbi;
321	pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%p4cc, start=%u,%u, count=%u,%u\n",
322	vbi->sampling_rate, vbi->offset,
323	vbi->samples_per_line, &vbi->sample_format,
324	vbi->start[0], vbi->start[1],
325	vbi->count[0], vbi->count[1]);
326	break;
327	case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
328	case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
329	sliced = &p->fmt.sliced;
330	pr_cont(", service_set=0x%08x, io_size=%d\n",
331	sliced->service_set, sliced->io_size);
332	for (i = 0; i < 24; i++)
333	printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
334	sliced->service_lines[0][i],
335	sliced->service_lines[1][i]);
336	break;
337	case V4L2_BUF_TYPE_SDR_CAPTURE:
338	case V4L2_BUF_TYPE_SDR_OUTPUT:
339	pixelformat = p->fmt.sdr.pixelformat;
340	pr_cont(", pixelformat=%p4cc\n", &pixelformat);
341	break;
342	case V4L2_BUF_TYPE_META_CAPTURE:
343	case V4L2_BUF_TYPE_META_OUTPUT:
344	meta = &p->fmt.meta;
345	pixelformat = meta->dataformat;
346	pr_cont(", dataformat=%p4cc, buffersize=%u, width=%u, height=%u, bytesperline=%u\n",
347	&pixelformat, meta->buffersize, meta->width,
348	meta->height, meta->bytesperline);
349	break;
350	}
351	}
352
353	static void v4l_print_framebuffer(const void *arg, bool write_only)
354	{
355	const struct v4l2_framebuffer *p = arg;
356
357	pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, height=%u, pixelformat=%p4cc, bytesperline=%u, sizeimage=%u, colorspace=%d\n",
358	p->capability, p->flags, p->base, p->fmt.width, p->fmt.height,
359	&p->fmt.pixelformat, p->fmt.bytesperline, p->fmt.sizeimage,
360	p->fmt.colorspace);
361	}
362
363	static void v4l_print_buftype(const void *arg, bool write_only)
364	{
365	pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names));
366	}
367
368	static void v4l_print_modulator(const void *arg, bool write_only)
369	{
370	const struct v4l2_modulator *p = arg;
371
372	if (write_only)
373	pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans);
374	else
375	pr_cont("index=%u, name=%.*s, capability=0x%x, rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
376	p->index, (int)sizeof(p->name), p->name, p->capability,
377	p->rangelow, p->rangehigh, p->txsubchans);
378	}
379
380	static void v4l_print_tuner(const void *arg, bool write_only)
381	{
382	const struct v4l2_tuner *p = arg;
383
384	if (write_only)
385	pr_cont("index=%u, audmode=%u\n", p->index, p->audmode);
386	else
387	pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, rangelow=%u, rangehigh=%u, signal=%u, afc=%d, rxsubchans=0x%x, audmode=%u\n",
388	p->index, (int)sizeof(p->name), p->name, p->type,
389	p->capability, p->rangelow,
390	p->rangehigh, p->signal, p->afc,
391	p->rxsubchans, p->audmode);
392	}
393
394	static void v4l_print_frequency(const void *arg, bool write_only)
395	{
396	const struct v4l2_frequency *p = arg;
397
398	pr_cont("tuner=%u, type=%u, frequency=%u\n",
399	p->tuner, p->type, p->frequency);
400	}
401
402	static void v4l_print_standard(const void *arg, bool write_only)
403	{
404	const struct v4l2_standard *p = arg;
405
406	pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, framelines=%u\n",
407	p->index,
408	(unsigned long long)p->id, (int)sizeof(p->name), p->name,
409	p->frameperiod.numerator,
410	p->frameperiod.denominator,
411	p->framelines);
412	}
413
414	static void v4l_print_std(const void *arg, bool write_only)
415	{
416	pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg);
417	}
418
419	static void v4l_print_hw_freq_seek(const void *arg, bool write_only)
420	{
421	const struct v4l2_hw_freq_seek *p = arg;
422
423	pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, rangelow=%u, rangehigh=%u\n",
424	p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing,
425	p->rangelow, p->rangehigh);
426	}
427
428	static void v4l_print_requestbuffers(const void *arg, bool write_only)
429	{
430	const struct v4l2_requestbuffers *p = arg;
431
432	pr_cont("count=%d, type=%s, memory=%s\n",
433	p->count,
434	prt_names(p->type, v4l2_type_names),
435	prt_names(p->memory, v4l2_memory_names));
436	}
437
438	static void v4l_print_buffer(const void *arg, bool write_only)
439	{
440	const struct v4l2_buffer *p = arg;
441	const struct v4l2_timecode *tc = &p->timecode;
442	const struct v4l2_plane *plane;
443	int i;
444
445	pr_cont("%02d:%02d:%02d.%06ld index=%d, type=%s, request_fd=%d, flags=0x%08x, field=%s, sequence=%d, memory=%s",
446	(int)p->timestamp.tv_sec / 3600,
447	((int)p->timestamp.tv_sec / 60) % 60,
448	((int)p->timestamp.tv_sec % 60),
449	(long)p->timestamp.tv_usec,
450	p->index,
451	prt_names(p->type, v4l2_type_names), p->request_fd,
452	p->flags, prt_names(p->field, v4l2_field_names),
453	p->sequence, prt_names(p->memory, v4l2_memory_names));
454
455	if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
456	pr_cont("\n");
457	for (i = 0; i < p->length; ++i) {
458	plane = &p->m.planes[i];
459	printk(KERN_DEBUG
460	"plane %d: bytesused=%d, data_offset=0x%08x, offset/userptr=0x%lx, length=%d\n",
461	i, plane->bytesused, plane->data_offset,
462	plane->m.userptr, plane->length);
463	}
464	} else {
465	pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n",
466	p->bytesused, p->m.userptr, p->length);
467	}
468
469	printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, flags=0x%08x, frames=%d, userbits=0x%08x\n",
470	tc->hours, tc->minutes, tc->seconds,
471	tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
472	}
473
474	static void v4l_print_exportbuffer(const void *arg, bool write_only)
475	{
476	const struct v4l2_exportbuffer *p = arg;
477
478	pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n",
479	p->fd, prt_names(p->type, v4l2_type_names),
480	p->index, p->plane, p->flags);
481	}
482
483	static void v4l_print_create_buffers(const void *arg, bool write_only)
484	{
485	const struct v4l2_create_buffers *p = arg;
486
487	pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, max num buffers=%u, ",
488	p->index, p->count, prt_names(p->memory, v4l2_memory_names),
489	p->capabilities, p->max_num_buffers);
490	v4l_print_format(arg: &p->format, write_only);
491	}
492
493	static void v4l_print_remove_buffers(const void *arg, bool write_only)
494	{
495	const struct v4l2_remove_buffers *p = arg;
496
497	pr_cont("type=%s, index=%u, count=%u\n",
498	prt_names(p->type, v4l2_type_names), p->index, p->count);
499	}
500
501	static void v4l_print_streamparm(const void *arg, bool write_only)
502	{
503	const struct v4l2_streamparm *p = arg;
504
505	pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
506
507	if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
508	p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
509	const struct v4l2_captureparm *c = &p->parm.capture;
510
511	pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, extendedmode=%d, readbuffers=%d\n",
512	c->capability, c->capturemode,
513	c->timeperframe.numerator, c->timeperframe.denominator,
514	c->extendedmode, c->readbuffers);
515	} else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
516	p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
517	const struct v4l2_outputparm *c = &p->parm.output;
518
519	pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, extendedmode=%d, writebuffers=%d\n",
520	c->capability, c->outputmode,
521	c->timeperframe.numerator, c->timeperframe.denominator,
522	c->extendedmode, c->writebuffers);
523	} else {
524	pr_cont("\n");
525	}
526	}
527
528	static void v4l_print_queryctrl(const void *arg, bool write_only)
529	{
530	const struct v4l2_queryctrl *p = arg;
531
532	pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, step=%d, default=%d, flags=0x%08x\n",
533	p->id, p->type, (int)sizeof(p->name), p->name,
534	p->minimum, p->maximum,
535	p->step, p->default_value, p->flags);
536	}
537
538	static void v4l_print_query_ext_ctrl(const void *arg, bool write_only)
539	{
540	const struct v4l2_query_ext_ctrl *p = arg;
541
542	pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%lld/%lld, step=%lld, default=%lld, flags=0x%08x, elem_size=%u, elems=%u, nr_of_dims=%u, dims=%u,%u,%u,%u\n",
543	p->id, p->type, (int)sizeof(p->name), p->name,
544	p->minimum, p->maximum,
545	p->step, p->default_value, p->flags,
546	p->elem_size, p->elems, p->nr_of_dims,
547	p->dims[0], p->dims[1], p->dims[2], p->dims[3]);
548	}
549
550	static void v4l_print_querymenu(const void *arg, bool write_only)
551	{
552	const struct v4l2_querymenu *p = arg;
553
554	pr_cont("id=0x%x, index=%d\n", p->id, p->index);
555	}
556
557	static void v4l_print_control(const void *arg, bool write_only)
558	{
559	const struct v4l2_control *p = arg;
560	const char *name = v4l2_ctrl_get_name(id: p->id);
561
562	if (name)
563	pr_cont("name=%s, ", name);
564	pr_cont("id=0x%x, value=%d\n", p->id, p->value);
565	}
566
567	static void v4l_print_ext_controls(const void *arg, bool write_only)
568	{
569	const struct v4l2_ext_controls *p = arg;
570	int i;
571
572	pr_cont("which=0x%x, count=%d, error_idx=%d, request_fd=%d",
573	p->which, p->count, p->error_idx, p->request_fd);
574	for (i = 0; i < p->count; i++) {
575	unsigned int id = p->controls[i].id;
576	const char *name = v4l2_ctrl_get_name(id);
577
578	if (name)
579	pr_cont(", name=%s", name);
580	if (!p->controls[i].size)
581	pr_cont(", id/val=0x%x/0x%x", id, p->controls[i].value);
582	else
583	pr_cont(", id/size=0x%x/%u", id, p->controls[i].size);
584	}
585	pr_cont("\n");
586	}
587
588	static void v4l_print_cropcap(const void *arg, bool write_only)
589	{
590	const struct v4l2_cropcap *p = arg;
591
592	pr_cont("type=%s, bounds (%d,%d)/%ux%u, defrect (%d,%d)/%ux%u, pixelaspect %d/%d\n",
593	prt_names(p->type, v4l2_type_names),
594	p->bounds.left, p->bounds.top,
595	p->bounds.width, p->bounds.height,
596	p->defrect.left, p->defrect.top,
597	p->defrect.width, p->defrect.height,
598	p->pixelaspect.numerator, p->pixelaspect.denominator);
599	}
600
601	static void v4l_print_crop(const void *arg, bool write_only)
602	{
603	const struct v4l2_crop *p = arg;
604
605	pr_cont("type=%s, crop=(%d,%d)/%ux%u\n",
606	prt_names(p->type, v4l2_type_names),
607	p->c.left, p->c.top,
608	p->c.width, p->c.height);
609	}
610
611	static void v4l_print_selection(const void *arg, bool write_only)
612	{
613	const struct v4l2_selection *p = arg;
614
615	pr_cont("type=%s, target=%d, flags=0x%x, rect=(%d,%d)/%ux%u\n",
616	prt_names(p->type, v4l2_type_names),
617	p->target, p->flags,
618	p->r.left, p->r.top, p->r.width, p->r.height);
619	}
620
621	static void v4l_print_jpegcompression(const void *arg, bool write_only)
622	{
623	const struct v4l2_jpegcompression *p = arg;
624
625	pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n",
626	p->quality, p->APPn, p->APP_len,
627	p->COM_len, p->jpeg_markers);
628	}
629
630	static void v4l_print_enc_idx(const void *arg, bool write_only)
631	{
632	const struct v4l2_enc_idx *p = arg;
633
634	pr_cont("entries=%d, entries_cap=%d\n",
635	p->entries, p->entries_cap);
636	}
637
638	static void v4l_print_encoder_cmd(const void *arg, bool write_only)
639	{
640	const struct v4l2_encoder_cmd *p = arg;
641
642	pr_cont("cmd=%d, flags=0x%x\n",
643	p->cmd, p->flags);
644	}
645
646	static void v4l_print_decoder_cmd(const void *arg, bool write_only)
647	{
648	const struct v4l2_decoder_cmd *p = arg;
649
650	pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags);
651
652	if (p->cmd == V4L2_DEC_CMD_START)
653	pr_info("speed=%d, format=%u\n",
654	p->start.speed, p->start.format);
655	else if (p->cmd == V4L2_DEC_CMD_STOP)
656	pr_info("pts=%llu\n", p->stop.pts);
657	}
658
659	static void v4l_print_dbg_chip_info(const void *arg, bool write_only)
660	{
661	const struct v4l2_dbg_chip_info *p = arg;
662
663	pr_cont("type=%u, ", p->match.type);
664	if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
665	pr_cont("name=%.*s, ",
666	(int)sizeof(p->match.name), p->match.name);
667	else
668	pr_cont("addr=%u, ", p->match.addr);
669	pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name);
670	}
671
672	static void v4l_print_dbg_register(const void *arg, bool write_only)
673	{
674	const struct v4l2_dbg_register *p = arg;
675
676	pr_cont("type=%u, ", p->match.type);
677	if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
678	pr_cont("name=%.*s, ",
679	(int)sizeof(p->match.name), p->match.name);
680	else
681	pr_cont("addr=%u, ", p->match.addr);
682	pr_cont("reg=0x%llx, val=0x%llx\n",
683	p->reg, p->val);
684	}
685
686	static void v4l_print_dv_timings(const void *arg, bool write_only)
687	{
688	const struct v4l2_dv_timings *p = arg;
689
690	switch (p->type) {
691	case V4L2_DV_BT_656_1120:
692	pr_cont("type=bt-656/1120, interlaced=%u, pixelclock=%llu, width=%u, height=%u, polarities=0x%x, hfrontporch=%u, hsync=%u, hbackporch=%u, vfrontporch=%u, vsync=%u, vbackporch=%u, il_vfrontporch=%u, il_vsync=%u, il_vbackporch=%u, standards=0x%x, flags=0x%x\n",
693	p->bt.interlaced, p->bt.pixelclock,
694	p->bt.width, p->bt.height,
695	p->bt.polarities, p->bt.hfrontporch,
696	p->bt.hsync, p->bt.hbackporch,
697	p->bt.vfrontporch, p->bt.vsync,
698	p->bt.vbackporch, p->bt.il_vfrontporch,
699	p->bt.il_vsync, p->bt.il_vbackporch,
700	p->bt.standards, p->bt.flags);
701	break;
702	default:
703	pr_cont("type=%d\n", p->type);
704	break;
705	}
706	}
707
708	static void v4l_print_enum_dv_timings(const void *arg, bool write_only)
709	{
710	const struct v4l2_enum_dv_timings *p = arg;
711
712	pr_cont("index=%u, ", p->index);
713	v4l_print_dv_timings(arg: &p->timings, write_only);
714	}
715
716	static void v4l_print_dv_timings_cap(const void *arg, bool write_only)
717	{
718	const struct v4l2_dv_timings_cap *p = arg;
719
720	switch (p->type) {
721	case V4L2_DV_BT_656_1120:
722	pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
723	p->bt.min_width, p->bt.max_width,
724	p->bt.min_height, p->bt.max_height,
725	p->bt.min_pixelclock, p->bt.max_pixelclock,
726	p->bt.standards, p->bt.capabilities);
727	break;
728	default:
729	pr_cont("type=%u\n", p->type);
730	break;
731	}
732	}
733
734	static void v4l_print_frmsizeenum(const void *arg, bool write_only)
735	{
736	const struct v4l2_frmsizeenum *p = arg;
737
738	pr_cont("index=%u, pixelformat=%p4cc, type=%u",
739	p->index, &p->pixel_format, p->type);
740	switch (p->type) {
741	case V4L2_FRMSIZE_TYPE_DISCRETE:
742	pr_cont(", wxh=%ux%u\n",
743	p->discrete.width, p->discrete.height);
744	break;
745	case V4L2_FRMSIZE_TYPE_STEPWISE:
746	pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n",
747	p->stepwise.min_width,
748	p->stepwise.min_height,
749	p->stepwise.max_width,
750	p->stepwise.max_height,
751	p->stepwise.step_width,
752	p->stepwise.step_height);
753	break;
754	case V4L2_FRMSIZE_TYPE_CONTINUOUS:
755	default:
756	pr_cont("\n");
757	break;
758	}
759	}
760
761	static void v4l_print_frmivalenum(const void *arg, bool write_only)
762	{
763	const struct v4l2_frmivalenum *p = arg;
764
765	pr_cont("index=%u, pixelformat=%p4cc, wxh=%ux%u, type=%u",
766	p->index, &p->pixel_format, p->width, p->height, p->type);
767	switch (p->type) {
768	case V4L2_FRMIVAL_TYPE_DISCRETE:
769	pr_cont(", fps=%d/%d\n",
770	p->discrete.numerator,
771	p->discrete.denominator);
772	break;
773	case V4L2_FRMIVAL_TYPE_STEPWISE:
774	pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n",
775	p->stepwise.min.numerator,
776	p->stepwise.min.denominator,
777	p->stepwise.max.numerator,
778	p->stepwise.max.denominator,
779	p->stepwise.step.numerator,
780	p->stepwise.step.denominator);
781	break;
782	case V4L2_FRMIVAL_TYPE_CONTINUOUS:
783	default:
784	pr_cont("\n");
785	break;
786	}
787	}
788
789	static void v4l_print_event(const void *arg, bool write_only)
790	{
791	const struct v4l2_event *p = arg;
792	const struct v4l2_event_ctrl *c;
793
794	pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%llu.%9.9llu\n",
795	p->type, p->pending, p->sequence, p->id,
796	p->timestamp.tv_sec, p->timestamp.tv_nsec);
797	switch (p->type) {
798	case V4L2_EVENT_VSYNC:
799	printk(KERN_DEBUG "field=%s\n",
800	prt_names(p->u.vsync.field, v4l2_field_names));
801	break;
802	case V4L2_EVENT_CTRL:
803	c = &p->u.ctrl;
804	printk(KERN_DEBUG "changes=0x%x, type=%u, ",
805	c->changes, c->type);
806	if (c->type == V4L2_CTRL_TYPE_INTEGER64)
807	pr_cont("value64=%lld, ", c->value64);
808	else
809	pr_cont("value=%d, ", c->value);
810	pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n",
811	c->flags, c->minimum, c->maximum,
812	c->step, c->default_value);
813	break;
814	case V4L2_EVENT_FRAME_SYNC:
815	pr_cont("frame_sequence=%u\n",
816	p->u.frame_sync.frame_sequence);
817	break;
818	}
819	}
820
821	static void v4l_print_event_subscription(const void *arg, bool write_only)
822	{
823	const struct v4l2_event_subscription *p = arg;
824
825	pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
826	p->type, p->id, p->flags);
827	}
828
829	static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only)
830	{
831	const struct v4l2_sliced_vbi_cap *p = arg;
832	int i;
833
834	pr_cont("type=%s, service_set=0x%08x\n",
835	prt_names(p->type, v4l2_type_names), p->service_set);
836	for (i = 0; i < 24; i++)
837	printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
838	p->service_lines[0][i],
839	p->service_lines[1][i]);
840	}
841
842	static void v4l_print_freq_band(const void *arg, bool write_only)
843	{
844	const struct v4l2_frequency_band *p = arg;
845
846	pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n",
847	p->tuner, p->type, p->index,
848	p->capability, p->rangelow,
849	p->rangehigh, p->modulation);
850	}
851
852	static void v4l_print_edid(const void *arg, bool write_only)
853	{
854	const struct v4l2_edid *p = arg;
855
856	pr_cont("pad=%u, start_block=%u, blocks=%u\n",
857	p->pad, p->start_block, p->blocks);
858	}
859
860	static void v4l_print_u32(const void *arg, bool write_only)
861	{
862	pr_cont("value=%u\n", *(const u32 *)arg);
863	}
864
865	static void v4l_print_newline(const void *arg, bool write_only)
866	{
867	pr_cont("\n");
868	}
869
870	static void v4l_print_default(const void *arg, bool write_only)
871	{
872	pr_cont("driver-specific ioctl\n");
873	}
874
875	static bool check_ext_ctrls(struct v4l2_ext_controls *c, unsigned long ioctl)
876	{
877	__u32 i;
878
879	/* zero the reserved fields */
880	c->reserved[0] = 0;
881	for (i = 0; i < c->count; i++)
882	c->controls[i].reserved2[0] = 0;
883
884	switch (c->which) {
885	case V4L2_CID_PRIVATE_BASE:
886	/*
887	* V4L2_CID_PRIVATE_BASE cannot be used as control class
888	* when using extended controls.
889	* Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
890	* is it allowed for backwards compatibility.
891	*/
892	if (ioctl == VIDIOC_G_CTRL || ioctl == VIDIOC_S_CTRL)
893	return false;
894	break;
895	case V4L2_CTRL_WHICH_DEF_VAL:
896	case V4L2_CTRL_WHICH_MIN_VAL:
897	case V4L2_CTRL_WHICH_MAX_VAL:
898	/* Default, minimum or maximum value cannot be changed */
899	if (ioctl == VIDIOC_S_EXT_CTRLS ||
900	ioctl == VIDIOC_TRY_EXT_CTRLS) {
901	c->error_idx = c->count;
902	return false;
903	}
904	return true;
905	case V4L2_CTRL_WHICH_CUR_VAL:
906	return true;
907	case V4L2_CTRL_WHICH_REQUEST_VAL:
908	c->error_idx = c->count;
909	return false;
910	}
911
912	/* Check that all controls are from the same control class. */
913	for (i = 0; i < c->count; i++) {
914	if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) {
915	c->error_idx = ioctl == VIDIOC_TRY_EXT_CTRLS ? i :
916	c->count;
917	return false;
918	}
919	}
920	return true;
921	}
922
923	static int check_fmt(struct file *file, enum v4l2_buf_type type)
924	{
925	const u32 vid_caps = V4L2_CAP_VIDEO_CAPTURE |
926	V4L2_CAP_VIDEO_CAPTURE_MPLANE |
927	V4L2_CAP_VIDEO_OUTPUT |
928	V4L2_CAP_VIDEO_OUTPUT_MPLANE |
929	V4L2_CAP_VIDEO_M2M | V4L2_CAP_VIDEO_M2M_MPLANE;
930	const u32 meta_caps = V4L2_CAP_META_CAPTURE |
931	V4L2_CAP_META_OUTPUT;
932	struct video_device *vfd = video_devdata(file);
933	const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
934	bool is_vid = vfd->vfl_type == VFL_TYPE_VIDEO &&
935	(vfd->device_caps & vid_caps);
936	bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI;
937	bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
938	bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH;
939	bool is_meta = vfd->vfl_type == VFL_TYPE_VIDEO &&
940	(vfd->device_caps & meta_caps);
941	bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
942	bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
943
944	if (ops == NULL)
945	return -EINVAL;
946
947	switch (type) {
948	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
949	if ((is_vid || is_tch) && is_rx &&
950	(ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane))
951	return 0;
952	break;
953	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
954	if ((is_vid || is_tch) && is_rx && ops->vidioc_g_fmt_vid_cap_mplane)
955	return 0;
956	break;
957	case V4L2_BUF_TYPE_VIDEO_OVERLAY:
958	if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay)
959	return 0;
960	break;
961	case V4L2_BUF_TYPE_VIDEO_OUTPUT:
962	if (is_vid && is_tx &&
963	(ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane))
964	return 0;
965	break;
966	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
967	if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane)
968	return 0;
969	break;
970	case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
971	if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay)
972	return 0;
973	break;
974	case V4L2_BUF_TYPE_VBI_CAPTURE:
975	if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap)
976	return 0;
977	break;
978	case V4L2_BUF_TYPE_VBI_OUTPUT:
979	if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out)
980	return 0;
981	break;
982	case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
983	if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap)
984	return 0;
985	break;
986	case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
987	if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out)
988	return 0;
989	break;
990	case V4L2_BUF_TYPE_SDR_CAPTURE:
991	if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap)
992	return 0;
993	break;
994	case V4L2_BUF_TYPE_SDR_OUTPUT:
995	if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out)
996	return 0;
997	break;
998	case V4L2_BUF_TYPE_META_CAPTURE:
999	if (is_meta && is_rx && ops->vidioc_g_fmt_meta_cap)
1000	return 0;
1001	break;
1002	case V4L2_BUF_TYPE_META_OUTPUT:
1003	if (is_meta && is_tx && ops->vidioc_g_fmt_meta_out)
1004	return 0;
1005	break;
1006	default:
1007	break;
1008	}
1009	return -EINVAL;
1010	}
1011
1012	static void v4l_sanitize_colorspace(u32 pixelformat, u32 *colorspace,
1013	u32 *encoding, u32 *quantization,
1014	u32 *xfer_func)
1015	{
1016	bool is_hsv = pixelformat == V4L2_PIX_FMT_HSV24 ||
1017	pixelformat == V4L2_PIX_FMT_HSV32;
1018
1019	if (!v4l2_is_colorspace_valid(colorspace: *colorspace)) {
1020	*colorspace = V4L2_COLORSPACE_DEFAULT;
1021	*encoding = V4L2_YCBCR_ENC_DEFAULT;
1022	*quantization = V4L2_QUANTIZATION_DEFAULT;
1023	*xfer_func = V4L2_XFER_FUNC_DEFAULT;
1024	}
1025
1026	if ((!is_hsv && !v4l2_is_ycbcr_enc_valid(ycbcr_enc: *encoding)) ||
1027	(is_hsv && !v4l2_is_hsv_enc_valid(hsv_enc: *encoding)))
1028	*encoding = V4L2_YCBCR_ENC_DEFAULT;
1029
1030	if (!v4l2_is_quant_valid(quantization: *quantization))
1031	*quantization = V4L2_QUANTIZATION_DEFAULT;
1032
1033	if (!v4l2_is_xfer_func_valid(xfer_func: *xfer_func))
1034	*xfer_func = V4L2_XFER_FUNC_DEFAULT;
1035	}
1036
1037	static void v4l_sanitize_format(struct v4l2_format *fmt)
1038	{
1039	unsigned int offset;
1040
1041	/* Make sure num_planes is not bogus */
1042	if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ||
1043	fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
1044	fmt->fmt.pix_mp.num_planes = min_t(u32, fmt->fmt.pix_mp.num_planes,
1045	VIDEO_MAX_PLANES);
1046
1047	/*
1048	* The v4l2_pix_format structure has been extended with fields that were
1049	* not previously required to be set to zero by applications. The priv
1050	* field, when set to a magic value, indicates that the extended fields
1051	* are valid. Otherwise they will contain undefined values. To simplify
1052	* the API towards drivers zero the extended fields and set the priv
1053	* field to the magic value when the extended pixel format structure
1054	* isn't used by applications.
1055	*/
1056	if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1057	fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1058	if (fmt->fmt.pix.priv != V4L2_PIX_FMT_PRIV_MAGIC) {
1059	fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1060
1061	offset = offsetof(struct v4l2_pix_format, priv)
1062	+ sizeof(fmt->fmt.pix.priv);
1063	memset(((void *)&fmt->fmt.pix) + offset, 0,
1064	sizeof(fmt->fmt.pix) - offset);
1065	}
1066	}
1067
1068	/* Replace invalid colorspace values with defaults. */
1069	if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1070	fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1071	v4l_sanitize_colorspace(pixelformat: fmt->fmt.pix.pixelformat,
1072	colorspace: &fmt->fmt.pix.colorspace,
1073	encoding: &fmt->fmt.pix.ycbcr_enc,
1074	quantization: &fmt->fmt.pix.quantization,
1075	xfer_func: &fmt->fmt.pix.xfer_func);
1076	} else if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ||
1077	fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
1078	u32 ycbcr_enc = fmt->fmt.pix_mp.ycbcr_enc;
1079	u32 quantization = fmt->fmt.pix_mp.quantization;
1080	u32 xfer_func = fmt->fmt.pix_mp.xfer_func;
1081
1082	v4l_sanitize_colorspace(pixelformat: fmt->fmt.pix_mp.pixelformat,
1083	colorspace: &fmt->fmt.pix_mp.colorspace, encoding: &ycbcr_enc,
1084	quantization: &quantization, xfer_func: &xfer_func);
1085
1086	fmt->fmt.pix_mp.ycbcr_enc = ycbcr_enc;
1087	fmt->fmt.pix_mp.quantization = quantization;
1088	fmt->fmt.pix_mp.xfer_func = xfer_func;
1089	}
1090	}
1091
1092	static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
1093	struct file *file, void *fh, void *arg)
1094	{
1095	struct v4l2_capability *cap = (struct v4l2_capability *)arg;
1096	struct video_device *vfd = video_devdata(file);
1097	int ret;
1098
1099	cap->version = LINUX_VERSION_CODE;
1100	cap->device_caps = vfd->device_caps;
1101	cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS;
1102
1103	media_set_bus_info(bus_info: cap->bus_info, bus_info_size: sizeof(cap->bus_info),
1104	dev: vfd->dev_parent);
1105
1106	ret = ops->vidioc_querycap(file, fh, cap);
1107
1108	/*
1109	* Drivers must not change device_caps, so check for this and
1110	* warn if this happened.
1111	*/
1112	WARN_ON(cap->device_caps != vfd->device_caps);
1113	/*
1114	* Check that capabilities is a superset of
1115	* vfd->device_caps | V4L2_CAP_DEVICE_CAPS
1116	*/
1117	WARN_ON((cap->capabilities &
1118	(vfd->device_caps | V4L2_CAP_DEVICE_CAPS)) !=
1119	(vfd->device_caps | V4L2_CAP_DEVICE_CAPS));
1120	cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT;
1121	cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT;
1122
1123	return ret;
1124	}
1125
1126	static int v4l_g_input(const struct v4l2_ioctl_ops *ops,
1127	struct file *file, void *fh, void *arg)
1128	{
1129	struct video_device *vfd = video_devdata(file);
1130
1131	if (vfd->device_caps & V4L2_CAP_IO_MC) {
1132	*(int *)arg = 0;
1133	return 0;
1134	}
1135
1136	return ops->vidioc_g_input(file, fh, arg);
1137	}
1138
1139	static int v4l_g_output(const struct v4l2_ioctl_ops *ops,
1140	struct file *file, void *fh, void *arg)
1141	{
1142	struct video_device *vfd = video_devdata(file);
1143
1144	if (vfd->device_caps & V4L2_CAP_IO_MC) {
1145	*(int *)arg = 0;
1146	return 0;
1147	}
1148
1149	return ops->vidioc_g_output(file, fh, arg);
1150	}
1151
1152	static int v4l_s_input(const struct v4l2_ioctl_ops *ops,
1153	struct file *file, void *fh, void *arg)
1154	{
1155	struct video_device *vfd = video_devdata(file);
1156	int ret;
1157
1158	ret = v4l_enable_media_source(vdev: vfd);
1159	if (ret)
1160	return ret;
1161
1162	if (vfd->device_caps & V4L2_CAP_IO_MC)
1163	return *(int *)arg ? -EINVAL : 0;
1164
1165	return ops->vidioc_s_input(file, fh, *(unsigned int *)arg);
1166	}
1167
1168	static int v4l_s_output(const struct v4l2_ioctl_ops *ops,
1169	struct file *file, void *fh, void *arg)
1170	{
1171	struct video_device *vfd = video_devdata(file);
1172
1173	if (vfd->device_caps & V4L2_CAP_IO_MC)
1174	return *(int *)arg ? -EINVAL : 0;
1175
1176	return ops->vidioc_s_output(file, fh, *(unsigned int *)arg);
1177	}
1178
1179	static int v4l_g_priority(const struct v4l2_ioctl_ops *ops,
1180	struct file *file, void *fh, void *arg)
1181	{
1182	struct video_device *vfd;
1183	u32 *p = arg;
1184
1185	vfd = video_devdata(file);
1186	*p = v4l2_prio_max(global: vfd->prio);
1187	return 0;
1188	}
1189
1190	static int v4l_s_priority(const struct v4l2_ioctl_ops *ops,
1191	struct file *file, void *fh, void *arg)
1192	{
1193	struct video_device *vfd;
1194	struct v4l2_fh *vfh;
1195	u32 *p = arg;
1196
1197	vfd = video_devdata(file);
1198	if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
1199	return -ENOTTY;
1200	vfh = file->private_data;
1201	return v4l2_prio_change(global: vfd->prio, local: &vfh->prio, new: *p);
1202	}
1203
1204	static int v4l_enuminput(const struct v4l2_ioctl_ops *ops,
1205	struct file *file, void *fh, void *arg)
1206	{
1207	struct video_device *vfd = video_devdata(file);
1208	struct v4l2_input *p = arg;
1209
1210	/*
1211	* We set the flags for CAP_DV_TIMINGS &
1212	* CAP_STD here based on ioctl handler provided by the
1213	* driver. If the driver doesn't support these
1214	* for a specific input, it must override these flags.
1215	*/
1216	if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1217	p->capabilities |= V4L2_IN_CAP_STD;
1218
1219	if (vfd->device_caps & V4L2_CAP_IO_MC) {
1220	if (p->index)
1221	return -EINVAL;
1222	strscpy(p->name, vfd->name, sizeof(p->name));
1223	p->type = V4L2_INPUT_TYPE_CAMERA;
1224	return 0;
1225	}
1226
1227	return ops->vidioc_enum_input(file, fh, p);
1228	}
1229
1230	static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops,
1231	struct file *file, void *fh, void *arg)
1232	{
1233	struct video_device *vfd = video_devdata(file);
1234	struct v4l2_output *p = arg;
1235
1236	/*
1237	* We set the flags for CAP_DV_TIMINGS &
1238	* CAP_STD here based on ioctl handler provided by the
1239	* driver. If the driver doesn't support these
1240	* for a specific output, it must override these flags.
1241	*/
1242	if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1243	p->capabilities |= V4L2_OUT_CAP_STD;
1244
1245	if (vfd->device_caps & V4L2_CAP_IO_MC) {
1246	if (p->index)
1247	return -EINVAL;
1248	strscpy(p->name, vfd->name, sizeof(p->name));
1249	p->type = V4L2_OUTPUT_TYPE_ANALOG;
1250	return 0;
1251	}
1252
1253	return ops->vidioc_enum_output(file, fh, p);
1254	}
1255
1256	static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
1257	{
1258	const unsigned sz = sizeof(fmt->description);
1259	const char *descr = NULL;
1260	u32 flags = 0;
1261
1262	/*
1263	* We depart from the normal coding style here since the descriptions
1264	* should be aligned so it is easy to see which descriptions will be
1265	* longer than 31 characters (the max length for a description).
1266	* And frankly, this is easier to read anyway.
1267	*
1268	* Note that gcc will use O(log N) comparisons to find the right case.
1269	*/
1270	switch (fmt->pixelformat) {
1271	/* Max description length mask: descr = "0123456789012345678901234567890" */
1272	case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break;
1273	case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break;
1274	case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break;
1275	case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break;
1276	case V4L2_PIX_FMT_RGBA444: descr = "16-bit RGBA 4-4-4-4"; break;
1277	case V4L2_PIX_FMT_RGBX444: descr = "16-bit RGBX 4-4-4-4"; break;
1278	case V4L2_PIX_FMT_ABGR444: descr = "16-bit ABGR 4-4-4-4"; break;
1279	case V4L2_PIX_FMT_XBGR444: descr = "16-bit XBGR 4-4-4-4"; break;
1280	case V4L2_PIX_FMT_BGRA444: descr = "16-bit BGRA 4-4-4-4"; break;
1281	case V4L2_PIX_FMT_BGRX444: descr = "16-bit BGRX 4-4-4-4"; break;
1282	case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break;
1283	case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break;
1284	case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break;
1285	case V4L2_PIX_FMT_ABGR555: descr = "16-bit ABGR 1-5-5-5"; break;
1286	case V4L2_PIX_FMT_XBGR555: descr = "16-bit XBGR 1-5-5-5"; break;
1287	case V4L2_PIX_FMT_RGBA555: descr = "16-bit RGBA 5-5-5-1"; break;
1288	case V4L2_PIX_FMT_RGBX555: descr = "16-bit RGBX 5-5-5-1"; break;
1289	case V4L2_PIX_FMT_BGRA555: descr = "16-bit BGRA 5-5-5-1"; break;
1290	case V4L2_PIX_FMT_BGRX555: descr = "16-bit BGRX 5-5-5-1"; break;
1291	case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break;
1292	case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break;
1293	case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break;
1294	case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break;
1295	case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break;
1296	case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break;
1297	case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break;
1298	case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break;
1299	case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break;
1300	case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break;
1301	case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break;
1302	case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break;
1303	case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break;
1304	case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break;
1305	case V4L2_PIX_FMT_BGRA32: descr = "32-bit ABGR 8-8-8-8"; break;
1306	case V4L2_PIX_FMT_BGRX32: descr = "32-bit XBGR 8-8-8-8"; break;
1307	case V4L2_PIX_FMT_RGBA32: descr = "32-bit RGBA 8-8-8-8"; break;
1308	case V4L2_PIX_FMT_RGBX32: descr = "32-bit RGBX 8-8-8-8"; break;
1309	case V4L2_PIX_FMT_RGBX1010102: descr = "32-bit RGBX 10-10-10-2"; break;
1310	case V4L2_PIX_FMT_RGBA1010102: descr = "32-bit RGBA 10-10-10-2"; break;
1311	case V4L2_PIX_FMT_ARGB2101010: descr = "32-bit ARGB 2-10-10-10"; break;
1312	case V4L2_PIX_FMT_BGR48: descr = "48-bit BGR 16-16-16"; break;
1313	case V4L2_PIX_FMT_RGB48: descr = "48-bit RGB 16-16-16"; break;
1314	case V4L2_PIX_FMT_BGR48_12: descr = "12-bit Depth BGR"; break;
1315	case V4L2_PIX_FMT_ABGR64_12: descr = "12-bit Depth BGRA"; break;
1316	case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break;
1317	case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break;
1318	case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break;
1319	case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break;
1320	case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break;
1321	case V4L2_PIX_FMT_Y012: descr = "12-bit Greyscale (bits 15-4)"; break;
1322	case V4L2_PIX_FMT_Y14: descr = "14-bit Greyscale"; break;
1323	case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break;
1324	case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break;
1325	case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break;
1326	case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break;
1327	case V4L2_PIX_FMT_IPU3_Y10: descr = "10-bit greyscale (IPU3 Packed)"; break;
1328	case V4L2_PIX_FMT_Y12P: descr = "12-bit Greyscale (MIPI Packed)"; break;
1329	case V4L2_PIX_FMT_Y14P: descr = "14-bit Greyscale (MIPI Packed)"; break;
1330	case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break;
1331	case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break;
1332	case V4L2_PIX_FMT_Y16I: descr = "Interleaved 16-bit Greyscale"; break;
1333	case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break;
1334	case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break;
1335	case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break;
1336	case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break;
1337	case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break;
1338	case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break;
1339	case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break;
1340	case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break;
1341	case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break;
1342	case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break;
1343	case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break;
1344	case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break;
1345	case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break;
1346	case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break;
1347	case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break;
1348	case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break;
1349	case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break;
1350	case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break;
1351	case V4L2_PIX_FMT_YUV24: descr = "24-bit YUV 4:4:4 8-8-8"; break;
1352	case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break;
1353	case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break;
1354	case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break;
1355	case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break;
1356	case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break;
1357	case V4L2_PIX_FMT_YUVA32: descr = "32-bit YUVA 8-8-8-8"; break;
1358	case V4L2_PIX_FMT_YUVX32: descr = "32-bit YUVX 8-8-8-8"; break;
1359	case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break;
1360	case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break;
1361	case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break;
1362	case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break;
1363	case V4L2_PIX_FMT_YUV48_12: descr = "12-bit YUV 4:4:4 Packed"; break;
1364	case V4L2_PIX_FMT_NV12: descr = "Y/UV 4:2:0"; break;
1365	case V4L2_PIX_FMT_NV21: descr = "Y/VU 4:2:0"; break;
1366	case V4L2_PIX_FMT_NV15: descr = "10-bit Y/UV 4:2:0 (Packed)"; break;
1367	case V4L2_PIX_FMT_NV16: descr = "Y/UV 4:2:2"; break;
1368	case V4L2_PIX_FMT_NV61: descr = "Y/VU 4:2:2"; break;
1369	case V4L2_PIX_FMT_NV20: descr = "10-bit Y/UV 4:2:2 (Packed)"; break;
1370	case V4L2_PIX_FMT_NV24: descr = "Y/UV 4:4:4"; break;
1371	case V4L2_PIX_FMT_NV42: descr = "Y/VU 4:4:4"; break;
1372	case V4L2_PIX_FMT_P010: descr = "10-bit Y/UV 4:2:0"; break;
1373	case V4L2_PIX_FMT_P012: descr = "12-bit Y/UV 4:2:0"; break;
1374	case V4L2_PIX_FMT_NV12_4L4: descr = "Y/UV 4:2:0 (4x4 Linear)"; break;
1375	case V4L2_PIX_FMT_NV12_16L16: descr = "Y/UV 4:2:0 (16x16 Linear)"; break;
1376	case V4L2_PIX_FMT_NV12_32L32: descr = "Y/UV 4:2:0 (32x32 Linear)"; break;
1377	case V4L2_PIX_FMT_NV15_4L4: descr = "10-bit Y/UV 4:2:0 (4x4 Linear)"; break;
1378	case V4L2_PIX_FMT_P010_4L4: descr = "10-bit Y/UV 4:2:0 (4x4 Linear)"; break;
1379	case V4L2_PIX_FMT_NV12M: descr = "Y/UV 4:2:0 (N-C)"; break;
1380	case V4L2_PIX_FMT_NV21M: descr = "Y/VU 4:2:0 (N-C)"; break;
1381	case V4L2_PIX_FMT_NV16M: descr = "Y/UV 4:2:2 (N-C)"; break;
1382	case V4L2_PIX_FMT_NV61M: descr = "Y/VU 4:2:2 (N-C)"; break;
1383	case V4L2_PIX_FMT_NV12MT: descr = "Y/UV 4:2:0 (64x32 MB, N-C)"; break;
1384	case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/UV 4:2:0 (16x16 MB, N-C)"; break;
1385	case V4L2_PIX_FMT_P012M: descr = "12-bit Y/UV 4:2:0 (N-C)"; break;
1386	case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break;
1387	case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break;
1388	case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break;
1389	case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break;
1390	case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break;
1391	case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break;
1392	case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break;
1393	case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break;
1394	case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break;
1395	case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break;
1396	case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break;
1397	case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break;
1398	case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break;
1399	case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break;
1400	case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break;
1401	case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break;
1402	case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break;
1403	case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break;
1404	case V4L2_PIX_FMT_IPU3_SBGGR10: descr = "10-bit bayer BGGR IPU3 Packed"; break;
1405	case V4L2_PIX_FMT_IPU3_SGBRG10: descr = "10-bit bayer GBRG IPU3 Packed"; break;
1406	case V4L2_PIX_FMT_IPU3_SGRBG10: descr = "10-bit bayer GRBG IPU3 Packed"; break;
1407	case V4L2_PIX_FMT_IPU3_SRGGB10: descr = "10-bit bayer RGGB IPU3 Packed"; break;
1408	case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break;
1409	case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break;
1410	case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break;
1411	case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break;
1412	case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break;
1413	case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break;
1414	case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break;
1415	case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break;
1416	case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break;
1417	case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break;
1418	case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break;
1419	case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break;
1420	case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break;
1421	case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break;
1422	case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break;
1423	case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break;
1424	case V4L2_PIX_FMT_SBGGR14: descr = "14-bit Bayer BGBG/GRGR"; break;
1425	case V4L2_PIX_FMT_SGBRG14: descr = "14-bit Bayer GBGB/RGRG"; break;
1426	case V4L2_PIX_FMT_SGRBG14: descr = "14-bit Bayer GRGR/BGBG"; break;
1427	case V4L2_PIX_FMT_SRGGB14: descr = "14-bit Bayer RGRG/GBGB"; break;
1428	case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break;
1429	case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break;
1430	case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break;
1431	case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break;
1432	case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break;
1433	case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break;
1434	case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break;
1435	case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break;
1436	case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break;
1437	case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break;
1438	case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break;
1439	case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break;
1440	case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break;
1441	case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break;
1442	case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break;
1443	case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break;
1444	case V4L2_PIX_FMT_MM21: descr = "Mediatek 8-bit Block Format"; break;
1445	case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break;
1446	case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break;
1447	case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break;
1448	case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break;
1449	case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break;
1450	case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break;
1451	case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break;
1452	case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break;
1453	case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break;
1454	case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break;
1455	case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit Signed Deltas"; break;
1456	case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit Signed Deltas"; break;
1457	case V4L2_TCH_FMT_TU16: descr = "16-bit Unsigned Touch Data"; break;
1458	case V4L2_TCH_FMT_TU08: descr = "8-bit Unsigned Touch Data"; break;
1459	case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break;
1460	case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break;
1461	case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break;
1462	case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break;
1463	case V4L2_META_FMT_VIVID: descr = "Vivid Metadata"; break;
1464	case V4L2_META_FMT_RK_ISP1_PARAMS: descr = "Rockchip ISP1 3A Parameters"; break;
1465	case V4L2_META_FMT_RK_ISP1_STAT_3A: descr = "Rockchip ISP1 3A Statistics"; break;
1466	case V4L2_META_FMT_RK_ISP1_EXT_PARAMS: descr = "Rockchip ISP1 Ext 3A Params"; break;
1467	case V4L2_META_FMT_C3ISP_PARAMS: descr = "Amlogic C3 ISP Parameters"; break;
1468	case V4L2_META_FMT_C3ISP_STATS: descr = "Amlogic C3 ISP Statistics"; break;
1469	case V4L2_PIX_FMT_NV12_8L128: descr = "NV12 (8x128 Linear)"; break;
1470	case V4L2_PIX_FMT_NV12M_8L128: descr = "NV12M (8x128 Linear)"; break;
1471	case V4L2_PIX_FMT_NV12_10BE_8L128: descr = "10-bit NV12 (8x128 Linear, BE)"; break;
1472	case V4L2_PIX_FMT_NV12M_10BE_8L128: descr = "10-bit NV12M (8x128 Linear, BE)"; break;
1473	case V4L2_PIX_FMT_Y210: descr = "10-bit YUYV Packed"; break;
1474	case V4L2_PIX_FMT_Y212: descr = "12-bit YUYV Packed"; break;
1475	case V4L2_PIX_FMT_Y216: descr = "16-bit YUYV Packed"; break;
1476	case V4L2_META_FMT_RPI_BE_CFG: descr = "RPi PiSP BE Config format"; break;
1477	case V4L2_META_FMT_RPI_FE_CFG: descr = "RPi PiSP FE Config format"; break;
1478	case V4L2_META_FMT_RPI_FE_STATS: descr = "RPi PiSP FE Statistics format"; break;
1479	case V4L2_META_FMT_GENERIC_8: descr = "8-bit Generic Metadata"; break;
1480	case V4L2_META_FMT_GENERIC_CSI2_10: descr = "8-bit Generic Meta, 10b CSI-2"; break;
1481	case V4L2_META_FMT_GENERIC_CSI2_12: descr = "8-bit Generic Meta, 12b CSI-2"; break;
1482	case V4L2_META_FMT_GENERIC_CSI2_14: descr = "8-bit Generic Meta, 14b CSI-2"; break;
1483	case V4L2_META_FMT_GENERIC_CSI2_16: descr = "8-bit Generic Meta, 16b CSI-2"; break;
1484	case V4L2_META_FMT_GENERIC_CSI2_20: descr = "8-bit Generic Meta, 20b CSI-2"; break;
1485	case V4L2_META_FMT_GENERIC_CSI2_24: descr = "8-bit Generic Meta, 24b CSI-2"; break;
1486
1487	default:
1488	/* Compressed formats */
1489	flags = V4L2_FMT_FLAG_COMPRESSED;
1490	switch (fmt->pixelformat) {
1491	/* Max description length mask: descr = "0123456789012345678901234567890" */
1492	case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break;
1493	case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break;
1494	case V4L2_PIX_FMT_DV: descr = "1394"; break;
1495	case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break;
1496	case V4L2_PIX_FMT_H264: descr = "H.264"; break;
1497	case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break;
1498	case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break;
1499	case V4L2_PIX_FMT_H264_SLICE: descr = "H.264 Parsed Slice Data"; break;
1500	case V4L2_PIX_FMT_H263: descr = "H.263"; break;
1501	case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break;
1502	case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break;
1503	case V4L2_PIX_FMT_MPEG2_SLICE: descr = "MPEG-2 Parsed Slice Data"; break;
1504	case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 Part 2 ES"; break;
1505	case V4L2_PIX_FMT_XVID: descr = "Xvid"; break;
1506	case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break;
1507	case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break;
1508	case V4L2_PIX_FMT_VP8: descr = "VP8"; break;
1509	case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break;
1510	case V4L2_PIX_FMT_VP9: descr = "VP9"; break;
1511	case V4L2_PIX_FMT_VP9_FRAME: descr = "VP9 Frame"; break;
1512	case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */
1513	case V4L2_PIX_FMT_HEVC_SLICE: descr = "HEVC Parsed Slice Data"; break;
1514	case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */
1515	case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */
1516	case V4L2_PIX_FMT_SPK: descr = "Sorenson Spark"; break;
1517	case V4L2_PIX_FMT_RV30: descr = "RealVideo 8"; break;
1518	case V4L2_PIX_FMT_RV40: descr = "RealVideo 9 & 10"; break;
1519	case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break;
1520	case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break;
1521	case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break;
1522	case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break;
1523	case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break;
1524	case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break;
1525	case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break;
1526	case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break;
1527	case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break;
1528	case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break;
1529	case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break;
1530	case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break;
1531	case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break;
1532	case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break;
1533	case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break;
1534	case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break;
1535	case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break;
1536	case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break;
1537	case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break;
1538	case V4L2_PIX_FMT_QC08C: descr = "QCOM Compressed 8-bit Format"; break;
1539	case V4L2_PIX_FMT_QC10C: descr = "QCOM Compressed 10-bit Format"; break;
1540	case V4L2_PIX_FMT_AJPG: descr = "Aspeed JPEG"; break;
1541	case V4L2_PIX_FMT_AV1_FRAME: descr = "AV1 Frame"; break;
1542	case V4L2_PIX_FMT_MT2110T: descr = "Mediatek 10bit Tile Mode"; break;
1543	case V4L2_PIX_FMT_MT2110R: descr = "Mediatek 10bit Raster Mode"; break;
1544	case V4L2_PIX_FMT_HEXTILE: descr = "Hextile Compressed Format"; break;
1545	case V4L2_PIX_FMT_PISP_COMP1_RGGB: descr = "PiSP 8b RGRG/GBGB mode1 compr"; break;
1546	case V4L2_PIX_FMT_PISP_COMP1_GRBG: descr = "PiSP 8b GRGR/BGBG mode1 compr"; break;
1547	case V4L2_PIX_FMT_PISP_COMP1_GBRG: descr = "PiSP 8b GBGB/RGRG mode1 compr"; break;
1548	case V4L2_PIX_FMT_PISP_COMP1_BGGR: descr = "PiSP 8b BGBG/GRGR mode1 compr"; break;
1549	case V4L2_PIX_FMT_PISP_COMP1_MONO: descr = "PiSP 8b monochrome mode1 compr"; break;
1550	case V4L2_PIX_FMT_PISP_COMP2_RGGB: descr = "PiSP 8b RGRG/GBGB mode2 compr"; break;
1551	case V4L2_PIX_FMT_PISP_COMP2_GRBG: descr = "PiSP 8b GRGR/BGBG mode2 compr"; break;
1552	case V4L2_PIX_FMT_PISP_COMP2_GBRG: descr = "PiSP 8b GBGB/RGRG mode2 compr"; break;
1553	case V4L2_PIX_FMT_PISP_COMP2_BGGR: descr = "PiSP 8b BGBG/GRGR mode2 compr"; break;
1554	case V4L2_PIX_FMT_PISP_COMP2_MONO: descr = "PiSP 8b monochrome mode2 compr"; break;
1555	default:
1556	if (fmt->description[0])
1557	return;
1558	WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat);
1559	flags = 0;
1560	snprintf(buf: fmt->description, size: sz, fmt: "%p4cc",
1561	&fmt->pixelformat);
1562	break;
1563	}
1564	}
1565
1566	if (fmt->type == V4L2_BUF_TYPE_META_CAPTURE) {
1567	switch (fmt->pixelformat) {
1568	case V4L2_META_FMT_GENERIC_8:
1569	case V4L2_META_FMT_GENERIC_CSI2_10:
1570	case V4L2_META_FMT_GENERIC_CSI2_12:
1571	case V4L2_META_FMT_GENERIC_CSI2_14:
1572	case V4L2_META_FMT_GENERIC_CSI2_16:
1573	case V4L2_META_FMT_GENERIC_CSI2_20:
1574	case V4L2_META_FMT_GENERIC_CSI2_24:
1575	fmt->flags |= V4L2_FMT_FLAG_META_LINE_BASED;
1576	break;
1577	default:
1578	fmt->flags &= ~V4L2_FMT_FLAG_META_LINE_BASED;
1579	}
1580	}
1581
1582	if (descr)
1583	WARN_ON(strscpy(fmt->description, descr, sz) < 0);
1584	fmt->flags |= flags;
1585	}
1586
1587	static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
1588	struct file *file, void *fh, void *arg)
1589	{
1590	struct video_device *vdev = video_devdata(file);
1591	struct v4l2_fmtdesc *p = arg;
1592	int ret = check_fmt(file, type: p->type);
1593	u32 mbus_code;
1594	u32 cap_mask;
1595
1596	if (ret)
1597	return ret;
1598	ret = -EINVAL;
1599
1600	if (!(vdev->device_caps & V4L2_CAP_IO_MC))
1601	p->mbus_code = 0;
1602
1603	mbus_code = p->mbus_code;
1604	memset_after(p, 0, type);
1605	p->mbus_code = mbus_code;
1606
1607	switch (p->type) {
1608	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1609	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1610	cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE |
1611	V4L2_CAP_VIDEO_M2M_MPLANE;
1612	if (!!(vdev->device_caps & cap_mask) !=
1613	(p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE))
1614	break;
1615
1616	if (unlikely(!ops->vidioc_enum_fmt_vid_cap))
1617	break;
1618	ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
1619	break;
1620	case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1621	if (unlikely(!ops->vidioc_enum_fmt_vid_overlay))
1622	break;
1623	ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
1624	break;
1625	case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1626	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1627	cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE |
1628	V4L2_CAP_VIDEO_M2M_MPLANE;
1629	if (!!(vdev->device_caps & cap_mask) !=
1630	(p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE))
1631	break;
1632
1633	if (unlikely(!ops->vidioc_enum_fmt_vid_out))
1634	break;
1635	ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg);
1636	break;
1637	case V4L2_BUF_TYPE_SDR_CAPTURE:
1638	if (unlikely(!ops->vidioc_enum_fmt_sdr_cap))
1639	break;
1640	ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg);
1641	break;
1642	case V4L2_BUF_TYPE_SDR_OUTPUT:
1643	if (unlikely(!ops->vidioc_enum_fmt_sdr_out))
1644	break;
1645	ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg);
1646	break;
1647	case V4L2_BUF_TYPE_META_CAPTURE:
1648	if (unlikely(!ops->vidioc_enum_fmt_meta_cap))
1649	break;
1650	ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg);
1651	break;
1652	case V4L2_BUF_TYPE_META_OUTPUT:
1653	if (unlikely(!ops->vidioc_enum_fmt_meta_out))
1654	break;
1655	ret = ops->vidioc_enum_fmt_meta_out(file, fh, arg);
1656	break;
1657	}
1658	if (ret == 0)
1659	v4l_fill_fmtdesc(fmt: p);
1660	return ret;
1661	}
1662
1663	static void v4l_pix_format_touch(struct v4l2_pix_format *p)
1664	{
1665	/*
1666	* The v4l2_pix_format structure contains fields that make no sense for
1667	* touch. Set them to default values in this case.
1668	*/
1669
1670	p->field = V4L2_FIELD_NONE;
1671	p->colorspace = V4L2_COLORSPACE_RAW;
1672	p->flags = 0;
1673	p->ycbcr_enc = 0;
1674	p->quantization = 0;
1675	p->xfer_func = 0;
1676	}
1677
1678	static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
1679	struct file *file, void *fh, void *arg)
1680	{
1681	struct v4l2_format *p = arg;
1682	struct video_device *vfd = video_devdata(file);
1683	int ret = check_fmt(file, type: p->type);
1684
1685	if (ret)
1686	return ret;
1687
1688	memset(&p->fmt, 0, sizeof(p->fmt));
1689
1690	switch (p->type) {
1691	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1692	if (unlikely(!ops->vidioc_g_fmt_vid_cap))
1693	break;
1694	p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1695	ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg);
1696	/* just in case the driver zeroed it again */
1697	p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1698	if (vfd->vfl_type == VFL_TYPE_TOUCH)
1699	v4l_pix_format_touch(p: &p->fmt.pix);
1700	return ret;
1701	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1702	return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
1703	case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1704	return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
1705	case V4L2_BUF_TYPE_VBI_CAPTURE:
1706	return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
1707	case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1708	return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
1709	case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1710	if (unlikely(!ops->vidioc_g_fmt_vid_out))
1711	break;
1712	p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1713	ret = ops->vidioc_g_fmt_vid_out(file, fh, arg);
1714	/* just in case the driver zeroed it again */
1715	p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1716	return ret;
1717	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1718	return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
1719	case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1720	return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
1721	case V4L2_BUF_TYPE_VBI_OUTPUT:
1722	return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
1723	case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1724	return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
1725	case V4L2_BUF_TYPE_SDR_CAPTURE:
1726	return ops->vidioc_g_fmt_sdr_cap(file, fh, arg);
1727	case V4L2_BUF_TYPE_SDR_OUTPUT:
1728	return ops->vidioc_g_fmt_sdr_out(file, fh, arg);
1729	case V4L2_BUF_TYPE_META_CAPTURE:
1730	return ops->vidioc_g_fmt_meta_cap(file, fh, arg);
1731	case V4L2_BUF_TYPE_META_OUTPUT:
1732	return ops->vidioc_g_fmt_meta_out(file, fh, arg);
1733	}
1734	return -EINVAL;
1735	}
1736
1737	static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
1738	struct file *file, void *fh, void *arg)
1739	{
1740	struct v4l2_format *p = arg;
1741	struct video_device *vfd = video_devdata(file);
1742	int ret = check_fmt(file, type: p->type);
1743	unsigned int i;
1744
1745	if (ret)
1746	return ret;
1747
1748	ret = v4l_enable_media_source(vdev: vfd);
1749	if (ret)
1750	return ret;
1751	v4l_sanitize_format(fmt: p);
1752
1753	switch (p->type) {
1754	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1755	if (unlikely(!ops->vidioc_s_fmt_vid_cap))
1756	break;
1757	memset_after(p, 0, fmt.pix);
1758	ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg);
1759	/* just in case the driver zeroed it again */
1760	p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1761	if (vfd->vfl_type == VFL_TYPE_TOUCH)
1762	v4l_pix_format_touch(p: &p->fmt.pix);
1763	return ret;
1764	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1765	if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane))
1766	break;
1767	memset_after(p, 0, fmt.pix_mp.xfer_func);
1768	for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1769	memset_after(&p->fmt.pix_mp.plane_fmt[i],
1770	0, bytesperline);
1771	return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
1772	case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1773	if (unlikely(!ops->vidioc_s_fmt_vid_overlay))
1774	break;
1775	memset_after(p, 0, fmt.win);
1776	p->fmt.win.clips = NULL;
1777	p->fmt.win.clipcount = 0;
1778	p->fmt.win.bitmap = NULL;
1779	return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
1780	case V4L2_BUF_TYPE_VBI_CAPTURE:
1781	if (unlikely(!ops->vidioc_s_fmt_vbi_cap))
1782	break;
1783	memset_after(p, 0, fmt.vbi.flags);
1784	return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
1785	case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1786	if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap))
1787	break;
1788	memset_after(p, 0, fmt.sliced.io_size);
1789	return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
1790	case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1791	if (unlikely(!ops->vidioc_s_fmt_vid_out))
1792	break;
1793	memset_after(p, 0, fmt.pix);
1794	ret = ops->vidioc_s_fmt_vid_out(file, fh, arg);
1795	/* just in case the driver zeroed it again */
1796	p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1797	return ret;
1798	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1799	if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane))
1800	break;
1801	memset_after(p, 0, fmt.pix_mp.xfer_func);
1802	for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1803	memset_after(&p->fmt.pix_mp.plane_fmt[i],
1804	0, bytesperline);
1805	return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
1806	case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1807	if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay))
1808	break;
1809	memset_after(p, 0, fmt.win);
1810	p->fmt.win.clips = NULL;
1811	p->fmt.win.clipcount = 0;
1812	p->fmt.win.bitmap = NULL;
1813	return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
1814	case V4L2_BUF_TYPE_VBI_OUTPUT:
1815	if (unlikely(!ops->vidioc_s_fmt_vbi_out))
1816	break;
1817	memset_after(p, 0, fmt.vbi.flags);
1818	return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
1819	case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1820	if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out))
1821	break;
1822	memset_after(p, 0, fmt.sliced.io_size);
1823	return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
1824	case V4L2_BUF_TYPE_SDR_CAPTURE:
1825	if (unlikely(!ops->vidioc_s_fmt_sdr_cap))
1826	break;
1827	memset_after(p, 0, fmt.sdr.buffersize);
1828	return ops->vidioc_s_fmt_sdr_cap(file, fh, arg);
1829	case V4L2_BUF_TYPE_SDR_OUTPUT:
1830	if (unlikely(!ops->vidioc_s_fmt_sdr_out))
1831	break;
1832	memset_after(p, 0, fmt.sdr.buffersize);
1833	return ops->vidioc_s_fmt_sdr_out(file, fh, arg);
1834	case V4L2_BUF_TYPE_META_CAPTURE:
1835	if (unlikely(!ops->vidioc_s_fmt_meta_cap))
1836	break;
1837	memset_after(p, 0, fmt.meta);
1838	return ops->vidioc_s_fmt_meta_cap(file, fh, arg);
1839	case V4L2_BUF_TYPE_META_OUTPUT:
1840	if (unlikely(!ops->vidioc_s_fmt_meta_out))
1841	break;
1842	memset_after(p, 0, fmt.meta);
1843	return ops->vidioc_s_fmt_meta_out(file, fh, arg);
1844	}
1845	return -EINVAL;
1846	}
1847
1848	static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
1849	struct file *file, void *fh, void *arg)
1850	{
1851	struct v4l2_format *p = arg;
1852	struct video_device *vfd = video_devdata(file);
1853	int ret = check_fmt(file, type: p->type);
1854	unsigned int i;
1855
1856	if (ret)
1857	return ret;
1858
1859	v4l_sanitize_format(fmt: p);
1860
1861	switch (p->type) {
1862	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1863	if (unlikely(!ops->vidioc_try_fmt_vid_cap))
1864	break;
1865	memset_after(p, 0, fmt.pix);
1866	ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg);
1867	/* just in case the driver zeroed it again */
1868	p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1869	if (vfd->vfl_type == VFL_TYPE_TOUCH)
1870	v4l_pix_format_touch(p: &p->fmt.pix);
1871	return ret;
1872	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1873	if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane))
1874	break;
1875	memset_after(p, 0, fmt.pix_mp.xfer_func);
1876	for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1877	memset_after(&p->fmt.pix_mp.plane_fmt[i],
1878	0, bytesperline);
1879	return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
1880	case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1881	if (unlikely(!ops->vidioc_try_fmt_vid_overlay))
1882	break;
1883	memset_after(p, 0, fmt.win);
1884	p->fmt.win.clips = NULL;
1885	p->fmt.win.clipcount = 0;
1886	p->fmt.win.bitmap = NULL;
1887	return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
1888	case V4L2_BUF_TYPE_VBI_CAPTURE:
1889	if (unlikely(!ops->vidioc_try_fmt_vbi_cap))
1890	break;
1891	memset_after(p, 0, fmt.vbi.flags);
1892	return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
1893	case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1894	if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap))
1895	break;
1896	memset_after(p, 0, fmt.sliced.io_size);
1897	return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
1898	case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1899	if (unlikely(!ops->vidioc_try_fmt_vid_out))
1900	break;
1901	memset_after(p, 0, fmt.pix);
1902	ret = ops->vidioc_try_fmt_vid_out(file, fh, arg);
1903	/* just in case the driver zeroed it again */
1904	p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1905	return ret;
1906	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1907	if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane))
1908	break;
1909	memset_after(p, 0, fmt.pix_mp.xfer_func);
1910	for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1911	memset_after(&p->fmt.pix_mp.plane_fmt[i],
1912	0, bytesperline);
1913	return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
1914	case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1915	if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay))
1916	break;
1917	memset_after(p, 0, fmt.win);
1918	p->fmt.win.clips = NULL;
1919	p->fmt.win.clipcount = 0;
1920	p->fmt.win.bitmap = NULL;
1921	return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
1922	case V4L2_BUF_TYPE_VBI_OUTPUT:
1923	if (unlikely(!ops->vidioc_try_fmt_vbi_out))
1924	break;
1925	memset_after(p, 0, fmt.vbi.flags);
1926	return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
1927	case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1928	if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out))
1929	break;
1930	memset_after(p, 0, fmt.sliced.io_size);
1931	return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
1932	case V4L2_BUF_TYPE_SDR_CAPTURE:
1933	if (unlikely(!ops->vidioc_try_fmt_sdr_cap))
1934	break;
1935	memset_after(p, 0, fmt.sdr.buffersize);
1936	return ops->vidioc_try_fmt_sdr_cap(file, fh, arg);
1937	case V4L2_BUF_TYPE_SDR_OUTPUT:
1938	if (unlikely(!ops->vidioc_try_fmt_sdr_out))
1939	break;
1940	memset_after(p, 0, fmt.sdr.buffersize);
1941	return ops->vidioc_try_fmt_sdr_out(file, fh, arg);
1942	case V4L2_BUF_TYPE_META_CAPTURE:
1943	if (unlikely(!ops->vidioc_try_fmt_meta_cap))
1944	break;
1945	memset_after(p, 0, fmt.meta);
1946	return ops->vidioc_try_fmt_meta_cap(file, fh, arg);
1947	case V4L2_BUF_TYPE_META_OUTPUT:
1948	if (unlikely(!ops->vidioc_try_fmt_meta_out))
1949	break;
1950	memset_after(p, 0, fmt.meta);
1951	return ops->vidioc_try_fmt_meta_out(file, fh, arg);
1952	}
1953	return -EINVAL;
1954	}
1955
1956	static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
1957	struct file *file, void *fh, void *arg)
1958	{
1959	return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
1960	}
1961
1962	static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
1963	struct file *file, void *fh, void *arg)
1964	{
1965	return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
1966	}
1967
1968	static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,
1969	struct file *file, void *fh, void *arg)
1970	{
1971	struct video_device *vfd = video_devdata(file);
1972	struct v4l2_tuner *p = arg;
1973	int err;
1974
1975	p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1976	V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1977	err = ops->vidioc_g_tuner(file, fh, p);
1978	if (!err)
1979	p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1980	return err;
1981	}
1982
1983	static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
1984	struct file *file, void *fh, void *arg)
1985	{
1986	struct video_device *vfd = video_devdata(file);
1987	struct v4l2_tuner *p = arg;
1988	int ret;
1989
1990	ret = v4l_enable_media_source(vdev: vfd);
1991	if (ret)
1992	return ret;
1993	p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1994	V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1995	return ops->vidioc_s_tuner(file, fh, p);
1996	}
1997
1998	static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,
1999	struct file *file, void *fh, void *arg)
2000	{
2001	struct video_device *vfd = video_devdata(file);
2002	struct v4l2_modulator *p = arg;
2003	int err;
2004
2005	if (vfd->vfl_type == VFL_TYPE_RADIO)
2006	p->type = V4L2_TUNER_RADIO;
2007
2008	err = ops->vidioc_g_modulator(file, fh, p);
2009	if (!err)
2010	p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
2011	return err;
2012	}
2013
2014	static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops,
2015	struct file *file, void *fh, void *arg)
2016	{
2017	struct video_device *vfd = video_devdata(file);
2018	struct v4l2_modulator *p = arg;
2019
2020	if (vfd->vfl_type == VFL_TYPE_RADIO)
2021	p->type = V4L2_TUNER_RADIO;
2022
2023	return ops->vidioc_s_modulator(file, fh, p);
2024	}
2025
2026	static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
2027	struct file *file, void *fh, void *arg)
2028	{
2029	struct video_device *vfd = video_devdata(file);
2030	struct v4l2_frequency *p = arg;
2031
2032	if (vfd->vfl_type == VFL_TYPE_SDR)
2033	p->type = V4L2_TUNER_SDR;
2034	else
2035	p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2036	V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2037	return ops->vidioc_g_frequency(file, fh, p);
2038	}
2039
2040	static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
2041	struct file *file, void *fh, void *arg)
2042	{
2043	struct video_device *vfd = video_devdata(file);
2044	const struct v4l2_frequency *p = arg;
2045	enum v4l2_tuner_type type;
2046	int ret;
2047
2048	ret = v4l_enable_media_source(vdev: vfd);
2049	if (ret)
2050	return ret;
2051	if (vfd->vfl_type == VFL_TYPE_SDR) {
2052	if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)
2053	return -EINVAL;
2054	} else {
2055	type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2056	V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2057	if (type != p->type)
2058	return -EINVAL;
2059	}
2060	return ops->vidioc_s_frequency(file, fh, p);
2061	}
2062
2063	static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
2064	struct file *file, void *fh, void *arg)
2065	{
2066	struct video_device *vfd = video_devdata(file);
2067	struct v4l2_standard *p = arg;
2068
2069	return v4l_video_std_enumstd(vs: p, id: vfd->tvnorms);
2070	}
2071
2072	static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
2073	struct file *file, void *fh, void *arg)
2074	{
2075	struct video_device *vfd = video_devdata(file);
2076	v4l2_std_id id = *(v4l2_std_id *)arg, norm;
2077	int ret;
2078
2079	ret = v4l_enable_media_source(vdev: vfd);
2080	if (ret)
2081	return ret;
2082	norm = id & vfd->tvnorms;
2083	if (vfd->tvnorms && !norm) /* Check if std is supported */
2084	return -EINVAL;
2085
2086	/* Calls the specific handler */
2087	return ops->vidioc_s_std(file, fh, norm);
2088	}
2089
2090	static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
2091	struct file *file, void *fh, void *arg)
2092	{
2093	struct video_device *vfd = video_devdata(file);
2094	v4l2_std_id *p = arg;
2095	int ret;
2096
2097	ret = v4l_enable_media_source(vdev: vfd);
2098	if (ret)
2099	return ret;
2100	/*
2101	* If no signal is detected, then the driver should return
2102	* V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with
2103	* any standards that do not apply removed.
2104	*
2105	* This means that tuners, audio and video decoders can join
2106	* their efforts to improve the standards detection.
2107	*/
2108	*p = vfd->tvnorms;
2109	return ops->vidioc_querystd(file, fh, arg);
2110	}
2111
2112	static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
2113	struct file *file, void *fh, void *arg)
2114	{
2115	struct video_device *vfd = video_devdata(file);
2116	struct v4l2_hw_freq_seek *p = arg;
2117	enum v4l2_tuner_type type;
2118	int ret;
2119
2120	ret = v4l_enable_media_source(vdev: vfd);
2121	if (ret)
2122	return ret;
2123	/* s_hw_freq_seek is not supported for SDR for now */
2124	if (vfd->vfl_type == VFL_TYPE_SDR)
2125	return -EINVAL;
2126
2127	type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2128	V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2129	if (p->type != type)
2130	return -EINVAL;
2131	return ops->vidioc_s_hw_freq_seek(file, fh, p);
2132	}
2133
2134	static int v4l_s_fbuf(const struct v4l2_ioctl_ops *ops,
2135	struct file *file, void *fh, void *arg)
2136	{
2137	struct v4l2_framebuffer *p = arg;
2138
2139	p->base = NULL;
2140	return ops->vidioc_s_fbuf(file, fh, p);
2141	}
2142
2143	static int v4l_overlay(const struct v4l2_ioctl_ops *ops,
2144	struct file *file, void *fh, void *arg)
2145	{
2146	return ops->vidioc_overlay(file, fh, *(unsigned int *)arg);
2147	}
2148
2149	static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,
2150	struct file *file, void *fh, void *arg)
2151	{
2152	struct video_device *vfd = video_devdata(file);
2153	struct v4l2_requestbuffers *p = arg;
2154	int ret = check_fmt(file, type: p->type);
2155
2156	if (ret)
2157	return ret;
2158
2159	memset_after(p, 0, flags);
2160
2161	p->capabilities = 0;
2162	if (is_valid_ioctl(vfd, VIDIOC_REMOVE_BUFS))
2163	p->capabilities = V4L2_BUF_CAP_SUPPORTS_REMOVE_BUFS;
2164
2165	return ops->vidioc_reqbufs(file, fh, p);
2166	}
2167
2168	static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,
2169	struct file *file, void *fh, void *arg)
2170	{
2171	struct v4l2_buffer *p = arg;
2172	int ret = check_fmt(file, type: p->type);
2173
2174	return ret ? ret : ops->vidioc_querybuf(file, fh, p);
2175	}
2176
2177	static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,
2178	struct file *file, void *fh, void *arg)
2179	{
2180	struct v4l2_buffer *p = arg;
2181	int ret = check_fmt(file, type: p->type);
2182
2183	return ret ? ret : ops->vidioc_qbuf(file, fh, p);
2184	}
2185
2186	static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,
2187	struct file *file, void *fh, void *arg)
2188	{
2189	struct v4l2_buffer *p = arg;
2190	int ret = check_fmt(file, type: p->type);
2191
2192	return ret ? ret : ops->vidioc_dqbuf(file, fh, p);
2193	}
2194
2195	static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
2196	struct file *file, void *fh, void *arg)
2197	{
2198	struct video_device *vfd = video_devdata(file);
2199	struct v4l2_create_buffers *create = arg;
2200	int ret = check_fmt(file, type: create->format.type);
2201
2202	if (ret)
2203	return ret;
2204
2205	memset_after(create, 0, flags);
2206
2207	v4l_sanitize_format(fmt: &create->format);
2208
2209	create->capabilities = 0;
2210	if (is_valid_ioctl(vfd, VIDIOC_REMOVE_BUFS))
2211	create->capabilities = V4L2_BUF_CAP_SUPPORTS_REMOVE_BUFS;
2212
2213	ret = ops->vidioc_create_bufs(file, fh, create);
2214
2215	if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
2216	create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
2217	create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
2218
2219	return ret;
2220	}
2221
2222	static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
2223	struct file *file, void *fh, void *arg)
2224	{
2225	struct v4l2_buffer *b = arg;
2226	int ret = check_fmt(file, type: b->type);
2227
2228	return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
2229	}
2230
2231	static int v4l_remove_bufs(const struct v4l2_ioctl_ops *ops,
2232	struct file *file, void *fh, void *arg)
2233	{
2234	struct v4l2_remove_buffers *remove = arg;
2235
2236	if (ops->vidioc_remove_bufs)
2237	return ops->vidioc_remove_bufs(file, fh, remove);
2238
2239	return -ENOTTY;
2240	}
2241
2242	static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
2243	struct file *file, void *fh, void *arg)
2244	{
2245	struct video_device *vfd = video_devdata(file);
2246	struct v4l2_streamparm *p = arg;
2247	v4l2_std_id std;
2248	int ret = check_fmt(file, type: p->type);
2249
2250	if (ret)
2251	return ret;
2252	if (ops->vidioc_g_parm)
2253	return ops->vidioc_g_parm(file, fh, p);
2254	if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
2255	p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2256	return -EINVAL;
2257	if (vfd->device_caps & V4L2_CAP_READWRITE)
2258	p->parm.capture.readbuffers = 2;
2259	ret = ops->vidioc_g_std(file, fh, &std);
2260	if (ret == 0)
2261	v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe);
2262	return ret;
2263	}
2264
2265	static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
2266	struct file *file, void *fh, void *arg)
2267	{
2268	struct v4l2_streamparm *p = arg;
2269	int ret = check_fmt(file, type: p->type);
2270
2271	if (ret)
2272	return ret;
2273
2274	/* Note: extendedmode is never used in drivers */
2275	if (V4L2_TYPE_IS_OUTPUT(p->type)) {
2276	memset(p->parm.output.reserved, 0,
2277	sizeof(p->parm.output.reserved));
2278	p->parm.output.extendedmode = 0;
2279	p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY;
2280	} else {
2281	memset(p->parm.capture.reserved, 0,
2282	sizeof(p->parm.capture.reserved));
2283	p->parm.capture.extendedmode = 0;
2284	p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY;
2285	}
2286	return ops->vidioc_s_parm(file, fh, p);
2287	}
2288
2289	static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,
2290	struct file *file, void *fh, void *arg)
2291	{
2292	struct video_device *vfd = video_devdata(file);
2293	struct v4l2_query_ext_ctrl qec = {};
2294	struct v4l2_queryctrl *p = arg;
2295	struct v4l2_fh *vfh =
2296	test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2297	int ret;
2298
2299	if (vfh && vfh->ctrl_handler)
2300	return v4l2_queryctrl(hdl: vfh->ctrl_handler, qc: p);
2301	if (vfd->ctrl_handler)
2302	return v4l2_queryctrl(hdl: vfd->ctrl_handler, qc: p);
2303	if (!ops->vidioc_query_ext_ctrl)
2304	return -ENOTTY;
2305
2306	/* Simulate query_ext_ctr using query_ctrl. */
2307	qec.id = p->id;
2308	ret = ops->vidioc_query_ext_ctrl(file, fh, &qec);
2309	if (ret)
2310	return ret;
2311	v4l2_query_ext_ctrl_to_v4l2_queryctrl(to: p, from: &qec);
2312	return ret;
2313	}
2314
2315	static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops,
2316	struct file *file, void *fh, void *arg)
2317	{
2318	struct video_device *vfd = video_devdata(file);
2319	struct v4l2_query_ext_ctrl *p = arg;
2320	struct v4l2_fh *vfh =
2321	test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2322
2323	if (vfh && vfh->ctrl_handler)
2324	return v4l2_query_ext_ctrl(hdl: vfh->ctrl_handler, qc: p);
2325	if (vfd->ctrl_handler)
2326	return v4l2_query_ext_ctrl(hdl: vfd->ctrl_handler, qc: p);
2327	if (ops->vidioc_query_ext_ctrl)
2328	return ops->vidioc_query_ext_ctrl(file, fh, p);
2329	return -ENOTTY;
2330	}
2331
2332	static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,
2333	struct file *file, void *fh, void *arg)
2334	{
2335	struct video_device *vfd = video_devdata(file);
2336	struct v4l2_querymenu *p = arg;
2337	struct v4l2_fh *vfh =
2338	test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2339
2340	if (vfh && vfh->ctrl_handler)
2341	return v4l2_querymenu(hdl: vfh->ctrl_handler, qm: p);
2342	if (vfd->ctrl_handler)
2343	return v4l2_querymenu(hdl: vfd->ctrl_handler, qm: p);
2344	if (ops->vidioc_querymenu)
2345	return ops->vidioc_querymenu(file, fh, p);
2346	return -ENOTTY;
2347	}
2348
2349	static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops,
2350	struct file *file, void *fh, void *arg)
2351	{
2352	struct video_device *vfd = video_devdata(file);
2353	struct v4l2_control *p = arg;
2354	struct v4l2_fh *vfh =
2355	test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2356	struct v4l2_ext_controls ctrls;
2357	struct v4l2_ext_control ctrl;
2358
2359	if (vfh && vfh->ctrl_handler)
2360	return v4l2_g_ctrl(hdl: vfh->ctrl_handler, ctrl: p);
2361	if (vfd->ctrl_handler)
2362	return v4l2_g_ctrl(hdl: vfd->ctrl_handler, ctrl: p);
2363	if (ops->vidioc_g_ext_ctrls == NULL)
2364	return -ENOTTY;
2365
2366	ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
2367	ctrls.count = 1;
2368	ctrls.controls = &ctrl;
2369	ctrl.id = p->id;
2370	ctrl.value = p->value;
2371	if (check_ext_ctrls(c: &ctrls, VIDIOC_G_CTRL)) {
2372	int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
2373
2374	if (ret == 0)
2375	p->value = ctrl.value;
2376	return ret;
2377	}
2378	return -EINVAL;
2379	}
2380
2381	static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,
2382	struct file *file, void *fh, void *arg)
2383	{
2384	struct video_device *vfd = video_devdata(file);
2385	struct v4l2_control *p = arg;
2386	struct v4l2_fh *vfh =
2387	test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2388	struct v4l2_ext_controls ctrls;
2389	struct v4l2_ext_control ctrl;
2390	int ret;
2391
2392	if (vfh && vfh->ctrl_handler)
2393	return v4l2_s_ctrl(fh: vfh, hdl: vfh->ctrl_handler, ctrl: p);
2394	if (vfd->ctrl_handler)
2395	return v4l2_s_ctrl(NULL, hdl: vfd->ctrl_handler, ctrl: p);
2396	if (ops->vidioc_s_ext_ctrls == NULL)
2397	return -ENOTTY;
2398
2399	ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
2400	ctrls.count = 1;
2401	ctrls.controls = &ctrl;
2402	ctrl.id = p->id;
2403	ctrl.value = p->value;
2404	if (!check_ext_ctrls(c: &ctrls, VIDIOC_S_CTRL))
2405	return -EINVAL;
2406	ret = ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
2407	p->value = ctrl.value;
2408	return ret;
2409	}
2410
2411	static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2412	struct file *file, void *fh, void *arg)
2413	{
2414	struct video_device *vfd = video_devdata(file);
2415	struct v4l2_ext_controls *p = arg;
2416	struct v4l2_fh *vfh =
2417	test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2418
2419	p->error_idx = p->count;
2420	if (vfh && vfh->ctrl_handler)
2421	return v4l2_g_ext_ctrls(hdl: vfh->ctrl_handler,
2422	vdev: vfd, mdev: vfd->v4l2_dev->mdev, c: p);
2423	if (vfd->ctrl_handler)
2424	return v4l2_g_ext_ctrls(hdl: vfd->ctrl_handler,
2425	vdev: vfd, mdev: vfd->v4l2_dev->mdev, c: p);
2426	if (ops->vidioc_g_ext_ctrls == NULL)
2427	return -ENOTTY;
2428	return check_ext_ctrls(c: p, VIDIOC_G_EXT_CTRLS) ?
2429	ops->vidioc_g_ext_ctrls(file, fh, p) : -EINVAL;
2430	}
2431
2432	static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2433	struct file *file, void *fh, void *arg)
2434	{
2435	struct video_device *vfd = video_devdata(file);
2436	struct v4l2_ext_controls *p = arg;
2437	struct v4l2_fh *vfh =
2438	test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2439
2440	p->error_idx = p->count;
2441	if (vfh && vfh->ctrl_handler)
2442	return v4l2_s_ext_ctrls(fh: vfh, hdl: vfh->ctrl_handler,
2443	vdev: vfd, mdev: vfd->v4l2_dev->mdev, c: p);
2444	if (vfd->ctrl_handler)
2445	return v4l2_s_ext_ctrls(NULL, hdl: vfd->ctrl_handler,
2446	vdev: vfd, mdev: vfd->v4l2_dev->mdev, c: p);
2447	if (ops->vidioc_s_ext_ctrls == NULL)
2448	return -ENOTTY;
2449	return check_ext_ctrls(c: p, VIDIOC_S_EXT_CTRLS) ?
2450	ops->vidioc_s_ext_ctrls(file, fh, p) : -EINVAL;
2451	}
2452
2453	static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2454	struct file *file, void *fh, void *arg)
2455	{
2456	struct video_device *vfd = video_devdata(file);
2457	struct v4l2_ext_controls *p = arg;
2458	struct v4l2_fh *vfh =
2459	test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2460
2461	p->error_idx = p->count;
2462	if (vfh && vfh->ctrl_handler)
2463	return v4l2_try_ext_ctrls(hdl: vfh->ctrl_handler,
2464	vdev: vfd, mdev: vfd->v4l2_dev->mdev, c: p);
2465	if (vfd->ctrl_handler)
2466	return v4l2_try_ext_ctrls(hdl: vfd->ctrl_handler,
2467	vdev: vfd, mdev: vfd->v4l2_dev->mdev, c: p);
2468	if (ops->vidioc_try_ext_ctrls == NULL)
2469	return -ENOTTY;
2470	return check_ext_ctrls(c: p, VIDIOC_TRY_EXT_CTRLS) ?
2471	ops->vidioc_try_ext_ctrls(file, fh, p) : -EINVAL;
2472	}
2473
2474	/*
2475	* The selection API specified originally that the _MPLANE buffer types
2476	* shouldn't be used. The reasons for this are lost in the mists of time
2477	* (or just really crappy memories). Regardless, this is really annoying
2478	* for userspace. So to keep things simple we map _MPLANE buffer types
2479	* to their 'regular' counterparts before calling the driver. And we
2480	* restore it afterwards. This way applications can use either buffer
2481	* type and drivers don't need to check for both.
2482	*/
2483	static int v4l_g_selection(const struct v4l2_ioctl_ops *ops,
2484	struct file *file, void *fh, void *arg)
2485	{
2486	struct v4l2_selection *p = arg;
2487	u32 old_type = p->type;
2488	int ret;
2489
2490	if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2491	p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2492	else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2493	p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2494	ret = ops->vidioc_g_selection(file, fh, p);
2495	p->type = old_type;
2496	return ret;
2497	}
2498
2499	static int v4l_s_selection(const struct v4l2_ioctl_ops *ops,
2500	struct file *file, void *fh, void *arg)
2501	{
2502	struct v4l2_selection *p = arg;
2503	u32 old_type = p->type;
2504	int ret;
2505
2506	if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2507	p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2508	else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2509	p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2510	ret = ops->vidioc_s_selection(file, fh, p);
2511	p->type = old_type;
2512	return ret;
2513	}
2514
2515	static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
2516	struct file *file, void *fh, void *arg)
2517	{
2518	struct video_device *vfd = video_devdata(file);
2519	struct v4l2_crop *p = arg;
2520	struct v4l2_selection s = {
2521	.type = p->type,
2522	};
2523	int ret;
2524
2525	/* simulate capture crop using selection api */
2526
2527	/* crop means compose for output devices */
2528	if (V4L2_TYPE_IS_OUTPUT(p->type))
2529	s.target = V4L2_SEL_TGT_COMPOSE;
2530	else
2531	s.target = V4L2_SEL_TGT_CROP;
2532
2533	if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))
2534	s.target = s.target == V4L2_SEL_TGT_COMPOSE ?
2535	V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE;
2536
2537	ret = v4l_g_selection(ops, file, fh, arg: &s);
2538
2539	/* copying results to old structure on success */
2540	if (!ret)
2541	p->c = s.r;
2542	return ret;
2543	}
2544
2545	static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
2546	struct file *file, void *fh, void *arg)
2547	{
2548	struct video_device *vfd = video_devdata(file);
2549	struct v4l2_crop *p = arg;
2550	struct v4l2_selection s = {
2551	.type = p->type,
2552	.r = p->c,
2553	};
2554
2555	/* simulate capture crop using selection api */
2556
2557	/* crop means compose for output devices */
2558	if (V4L2_TYPE_IS_OUTPUT(p->type))
2559	s.target = V4L2_SEL_TGT_COMPOSE;
2560	else
2561	s.target = V4L2_SEL_TGT_CROP;
2562
2563	if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))
2564	s.target = s.target == V4L2_SEL_TGT_COMPOSE ?
2565	V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE;
2566
2567	return v4l_s_selection(ops, file, fh, arg: &s);
2568	}
2569
2570	static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
2571	struct file *file, void *fh, void *arg)
2572	{
2573	struct video_device *vfd = video_devdata(file);
2574	struct v4l2_cropcap *p = arg;
2575	struct v4l2_selection s = { .type = p->type };
2576	int ret = 0;
2577
2578	/* setting trivial pixelaspect */
2579	p->pixelaspect.numerator = 1;
2580	p->pixelaspect.denominator = 1;
2581
2582	if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2583	s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2584	else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2585	s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2586
2587	/*
2588	* The determine_valid_ioctls() call already should ensure
2589	* that this can never happen, but just in case...
2590	*/
2591	if (WARN_ON(!ops->vidioc_g_selection))
2592	return -ENOTTY;
2593
2594	if (ops->vidioc_g_pixelaspect)
2595	ret = ops->vidioc_g_pixelaspect(file, fh, s.type,
2596	&p->pixelaspect);
2597
2598	/*
2599	* Ignore ENOTTY or ENOIOCTLCMD error returns, just use the
2600	* square pixel aspect ratio in that case.
2601	*/
2602	if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD)
2603	return ret;
2604
2605	/* Use g_selection() to fill in the bounds and defrect rectangles */
2606
2607	/* obtaining bounds */
2608	if (V4L2_TYPE_IS_OUTPUT(p->type))
2609	s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
2610	else
2611	s.target = V4L2_SEL_TGT_CROP_BOUNDS;
2612
2613	if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))
2614	s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ?
2615	V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS;
2616
2617	ret = v4l_g_selection(ops, file, fh, arg: &s);
2618	if (ret)
2619	return ret;
2620	p->bounds = s.r;
2621
2622	/* obtaining defrect */
2623	if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS)
2624	s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
2625	else
2626	s.target = V4L2_SEL_TGT_CROP_DEFAULT;
2627
2628	ret = v4l_g_selection(ops, file, fh, arg: &s);
2629	if (ret)
2630	return ret;
2631	p->defrect = s.r;
2632
2633	return 0;
2634	}
2635
2636	static int v4l_log_status(const struct v4l2_ioctl_ops *ops,
2637	struct file *file, void *fh, void *arg)
2638	{
2639	struct video_device *vfd = video_devdata(file);
2640	int ret;
2641
2642	if (vfd->v4l2_dev)
2643	pr_info("%s: ================= START STATUS =================\n",
2644	vfd->v4l2_dev->name);
2645	ret = ops->vidioc_log_status(file, fh);
2646	if (vfd->v4l2_dev)
2647	pr_info("%s: ================== END STATUS ==================\n",
2648	vfd->v4l2_dev->name);
2649	return ret;
2650	}
2651
2652	static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
2653	struct file *file, void *fh, void *arg)
2654	{
2655	#ifdef CONFIG_VIDEO_ADV_DEBUG
2656	struct v4l2_dbg_register *p = arg;
2657	struct video_device *vfd = video_devdata(file);
2658	struct v4l2_subdev *sd;
2659	int idx = 0;
2660
2661	if (!capable(CAP_SYS_ADMIN))
2662	return -EPERM;
2663	if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2664	if (vfd->v4l2_dev == NULL)
2665	return -EINVAL;
2666	v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2667	if (p->match.addr == idx++)
2668	return v4l2_subdev_call(sd, core, g_register, p);
2669	return -EINVAL;
2670	}
2671	if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2672	(ops->vidioc_g_chip_info || p->match.addr == 0))
2673	return ops->vidioc_g_register(file, fh, p);
2674	return -EINVAL;
2675	#else
2676	return -ENOTTY;
2677	#endif
2678	}
2679
2680	static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
2681	struct file *file, void *fh, void *arg)
2682	{
2683	#ifdef CONFIG_VIDEO_ADV_DEBUG
2684	const struct v4l2_dbg_register *p = arg;
2685	struct video_device *vfd = video_devdata(file);
2686	struct v4l2_subdev *sd;
2687	int idx = 0;
2688
2689	if (!capable(CAP_SYS_ADMIN))
2690	return -EPERM;
2691	if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2692	if (vfd->v4l2_dev == NULL)
2693	return -EINVAL;
2694	v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2695	if (p->match.addr == idx++)
2696	return v4l2_subdev_call(sd, core, s_register, p);
2697	return -EINVAL;
2698	}
2699	if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2700	(ops->vidioc_g_chip_info || p->match.addr == 0))
2701	return ops->vidioc_s_register(file, fh, p);
2702	return -EINVAL;
2703	#else
2704	return -ENOTTY;
2705	#endif
2706	}
2707
2708	static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,
2709	struct file *file, void *fh, void *arg)
2710	{
2711	#ifdef CONFIG_VIDEO_ADV_DEBUG
2712	struct video_device *vfd = video_devdata(file);
2713	struct v4l2_dbg_chip_info *p = arg;
2714	struct v4l2_subdev *sd;
2715	int idx = 0;
2716
2717	switch (p->match.type) {
2718	case V4L2_CHIP_MATCH_BRIDGE:
2719	if (ops->vidioc_s_register)
2720	p->flags |= V4L2_CHIP_FL_WRITABLE;
2721	if (ops->vidioc_g_register)
2722	p->flags |= V4L2_CHIP_FL_READABLE;
2723	strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));
2724	if (ops->vidioc_g_chip_info)
2725	return ops->vidioc_g_chip_info(file, fh, arg);
2726	if (p->match.addr)
2727	return -EINVAL;
2728	return 0;
2729
2730	case V4L2_CHIP_MATCH_SUBDEV:
2731	if (vfd->v4l2_dev == NULL)
2732	break;
2733	v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {
2734	if (p->match.addr != idx++)
2735	continue;
2736	if (sd->ops->core && sd->ops->core->s_register)
2737	p->flags |= V4L2_CHIP_FL_WRITABLE;
2738	if (sd->ops->core && sd->ops->core->g_register)
2739	p->flags |= V4L2_CHIP_FL_READABLE;
2740	strscpy(p->name, sd->name, sizeof(p->name));
2741	return 0;
2742	}
2743	break;
2744	}
2745	return -EINVAL;
2746	#else
2747	return -ENOTTY;
2748	#endif
2749	}
2750
2751	static int v4l_dqevent(const struct v4l2_ioctl_ops *ops,
2752	struct file *file, void *fh, void *arg)
2753	{
2754	return v4l2_event_dequeue(fh, event: arg, nonblocking: file->f_flags & O_NONBLOCK);
2755	}
2756
2757	static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,
2758	struct file *file, void *fh, void *arg)
2759	{
2760	return ops->vidioc_subscribe_event(fh, arg);
2761	}
2762
2763	static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,
2764	struct file *file, void *fh, void *arg)
2765	{
2766	return ops->vidioc_unsubscribe_event(fh, arg);
2767	}
2768
2769	static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,
2770	struct file *file, void *fh, void *arg)
2771	{
2772	struct v4l2_sliced_vbi_cap *p = arg;
2773	int ret = check_fmt(file, type: p->type);
2774
2775	if (ret)
2776	return ret;
2777
2778	/* Clear up to type, everything after type is zeroed already */
2779	memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
2780
2781	return ops->vidioc_g_sliced_vbi_cap(file, fh, p);
2782	}
2783
2784	static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
2785	struct file *file, void *fh, void *arg)
2786	{
2787	struct video_device *vfd = video_devdata(file);
2788	struct v4l2_frequency_band *p = arg;
2789	enum v4l2_tuner_type type;
2790	int err;
2791
2792	if (vfd->vfl_type == VFL_TYPE_SDR) {
2793	if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)
2794	return -EINVAL;
2795	type = p->type;
2796	} else {
2797	type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2798	V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2799	if (type != p->type)
2800	return -EINVAL;
2801	}
2802	if (ops->vidioc_enum_freq_bands) {
2803	err = ops->vidioc_enum_freq_bands(file, fh, p);
2804	if (err != -ENOTTY)
2805	return err;
2806	}
2807	if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) {
2808	struct v4l2_tuner t = {
2809	.index = p->tuner,
2810	.type = type,
2811	};
2812
2813	if (p->index)
2814	return -EINVAL;
2815	err = ops->vidioc_g_tuner(file, fh, &t);
2816	if (err)
2817	return err;
2818	p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2819	p->rangelow = t.rangelow;
2820	p->rangehigh = t.rangehigh;
2821	p->modulation = (type == V4L2_TUNER_RADIO) ?
2822	V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2823	return 0;
2824	}
2825	if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) {
2826	struct v4l2_modulator m = {
2827	.index = p->tuner,
2828	};
2829
2830	if (type != V4L2_TUNER_RADIO)
2831	return -EINVAL;
2832	if (p->index)
2833	return -EINVAL;
2834	err = ops->vidioc_g_modulator(file, fh, &m);
2835	if (err)
2836	return err;
2837	p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2838	p->rangelow = m.rangelow;
2839	p->rangehigh = m.rangehigh;
2840	p->modulation = V4L2_BAND_MODULATION_FM;
2841	return 0;
2842	}
2843	return -ENOTTY;
2844	}
2845
2846	struct v4l2_ioctl_info {
2847	unsigned int ioctl;
2848	u32 flags;
2849	const char * const name;
2850	int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file,
2851	void *fh, void *p);
2852	void (*debug)(const void *arg, bool write_only);
2853	};
2854
2855	/* This control needs a priority check */
2856	#define INFO_FL_PRIO (1 << 0)
2857	/* This control can be valid if the filehandle passes a control handler. */
2858	#define INFO_FL_CTRL (1 << 1)
2859	/* Queuing ioctl */
2860	#define INFO_FL_QUEUE (1 << 2)
2861	/* Always copy back result, even on error */
2862	#define INFO_FL_ALWAYS_COPY (1 << 3)
2863	/* Zero struct from after the field to the end */
2864	#define INFO_FL_CLEAR(v4l2_struct, field) \
2865	((offsetof(struct v4l2_struct, field) + \
2866	sizeof_field(struct v4l2_struct, field)) << 16)
2867	#define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
2868
2869	#define DEFINE_V4L_STUB_FUNC(_vidioc) \
2870	static int v4l_stub_ ## _vidioc( \
2871	const struct v4l2_ioctl_ops *ops, \
2872	struct file *file, void *fh, void *p) \
2873	{ \
2874	return ops->vidioc_ ## _vidioc(file, fh, p); \
2875	}
2876
2877	#define IOCTL_INFO(_ioctl, _func, _debug, _flags) \
2878	[_IOC_NR(_ioctl)] = { \
2879	.ioctl = _ioctl, \
2880	.flags = _flags, \
2881	.name = #_ioctl, \
2882	.func = _func, \
2883	.debug = _debug, \
2884	}
2885
2886	DEFINE_V4L_STUB_FUNC(g_fbuf)
2887	DEFINE_V4L_STUB_FUNC(expbuf)
2888	DEFINE_V4L_STUB_FUNC(g_std)
2889	DEFINE_V4L_STUB_FUNC(g_audio)
2890	DEFINE_V4L_STUB_FUNC(s_audio)
2891	DEFINE_V4L_STUB_FUNC(g_edid)
2892	DEFINE_V4L_STUB_FUNC(s_edid)
2893	DEFINE_V4L_STUB_FUNC(g_audout)
2894	DEFINE_V4L_STUB_FUNC(s_audout)
2895	DEFINE_V4L_STUB_FUNC(g_jpegcomp)
2896	DEFINE_V4L_STUB_FUNC(s_jpegcomp)
2897	DEFINE_V4L_STUB_FUNC(enumaudio)
2898	DEFINE_V4L_STUB_FUNC(enumaudout)
2899	DEFINE_V4L_STUB_FUNC(enum_framesizes)
2900	DEFINE_V4L_STUB_FUNC(enum_frameintervals)
2901	DEFINE_V4L_STUB_FUNC(g_enc_index)
2902	DEFINE_V4L_STUB_FUNC(encoder_cmd)
2903	DEFINE_V4L_STUB_FUNC(try_encoder_cmd)
2904	DEFINE_V4L_STUB_FUNC(decoder_cmd)
2905	DEFINE_V4L_STUB_FUNC(try_decoder_cmd)
2906	DEFINE_V4L_STUB_FUNC(s_dv_timings)
2907	DEFINE_V4L_STUB_FUNC(g_dv_timings)
2908	DEFINE_V4L_STUB_FUNC(enum_dv_timings)
2909	DEFINE_V4L_STUB_FUNC(query_dv_timings)
2910	DEFINE_V4L_STUB_FUNC(dv_timings_cap)
2911
2912	static const struct v4l2_ioctl_info v4l2_ioctls[] = {
2913	IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
2914	IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, 0),
2915	IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0),
2916	IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
2917	IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2918	IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
2919	IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0),
2920	IOCTL_INFO(VIDIOC_S_FBUF, v4l_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
2921	IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO),
2922	IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),
2923	IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)),
2924	IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),
2925	IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2926	IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2927	IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
2928	IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
2929	IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0),
2930	IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
2931	IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
2932	IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
2933	IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
2934	IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
2935	IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
2936	IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
2937	IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0),
2938	IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO),
2939	IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
2940	IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
2941	IOCTL_INFO(VIDIOC_G_INPUT, v4l_g_input, v4l_print_u32, 0),
2942	IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
2943	IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY),
2944	IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY),
2945	IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_g_output, v4l_print_u32, 0),
2946	IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
2947	IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
2948	IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0),
2949	IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO),
2950	IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
2951	IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
2952	IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
2953	IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
2954	IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
2955	IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
2956	IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
2957	IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)),
2958	IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)),
2959	IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0),
2960	IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
2961	IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
2962	IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
2963	IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
2964	IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
2965	IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
2966	IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
2967	IOCTL_INFO(VIDIOC_G_SLICED_VBI_CAP, v4l_g_sliced_vbi_cap, v4l_print_sliced_vbi_cap, INFO_FL_CLEAR(v4l2_sliced_vbi_cap, type)),
2968	IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
2969	IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY),
2970	IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL | INFO_FL_ALWAYS_COPY),
2971	IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY),
2972	IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
2973	IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
2974	IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0),
2975	IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2976	IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2977	IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
2978	IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0),
2979	IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
2980	IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
2981	IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
2982	IOCTL_INFO(VIDIOC_S_DV_TIMINGS, v4l_stub_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_dv_timings, bt.flags)),
2983	IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0),
2984	IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
2985	IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
2986	IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
2987	IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2988	IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
2989	IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)),
2990	IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY),
2991	IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)),
2992	IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
2993	IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
2994	IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
2995	IOCTL_INFO(VIDIOC_REMOVE_BUFS, v4l_remove_bufs, v4l_print_remove_buffers, INFO_FL_PRIO | INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_remove_buffers, type)),
2996	};
2997	#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
2998
2999	static bool v4l2_is_known_ioctl(unsigned int cmd)
3000	{
3001	if (_IOC_NR(cmd) >= V4L2_IOCTLS)
3002	return false;
3003	return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
3004	}
3005
3006	static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev,
3007	struct v4l2_fh *vfh, unsigned int cmd,
3008	void *arg)
3009	{
3010	if (_IOC_NR(cmd) >= V4L2_IOCTLS)
3011	return vdev->lock;
3012	if (vfh && vfh->m2m_ctx &&
3013	(v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) {
3014	if (vfh->m2m_ctx->q_lock)
3015	return vfh->m2m_ctx->q_lock;
3016	}
3017	if (vdev->queue && vdev->queue->lock &&
3018	(v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
3019	return vdev->queue->lock;
3020	return vdev->lock;
3021	}
3022
3023	/* Common ioctl debug function. This function can be used by
3024	external ioctl messages as well as internal V4L ioctl */
3025	void v4l_printk_ioctl(const char *prefix, unsigned int cmd)
3026	{
3027	const char *dir, *type;
3028
3029	if (prefix)
3030	printk(KERN_DEBUG "%s: ", prefix);
3031
3032	switch (_IOC_TYPE(cmd)) {
3033	case 'd':
3034	type = "v4l2_int";
3035	break;
3036	case 'V':
3037	if (!v4l2_is_known_ioctl(cmd)) {
3038	type = "v4l2";
3039	break;
3040	}
3041	pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
3042	return;
3043	default:
3044	type = "unknown";
3045	break;
3046	}
3047
3048	switch (_IOC_DIR(cmd)) {
3049	case _IOC_NONE: dir = "--"; break;
3050	case _IOC_READ: dir = "r-"; break;
3051	case _IOC_WRITE: dir = "-w"; break;
3052	case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
3053	default: dir = "*ERR*"; break;
3054	}
3055	pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
3056	type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
3057	}
3058	EXPORT_SYMBOL(v4l_printk_ioctl);
3059
3060	static long __video_do_ioctl(struct file *file,
3061	unsigned int cmd, void *arg)
3062	{
3063	struct video_device *vfd = video_devdata(file);
3064	struct mutex *req_queue_lock = NULL;
3065	struct mutex *lock; /* ioctl serialization mutex */
3066	const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
3067	bool write_only = false;
3068	struct v4l2_ioctl_info default_info;
3069	const struct v4l2_ioctl_info *info;
3070	void *fh = file->private_data;
3071	struct v4l2_fh *vfh = NULL;
3072	int dev_debug = vfd->dev_debug;
3073	long ret = -ENOTTY;
3074
3075	if (ops == NULL) {
3076	pr_warn("%s: has no ioctl_ops.\n",
3077	video_device_node_name(vfd));
3078	return ret;
3079	}
3080
3081	if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
3082	vfh = file->private_data;
3083
3084	/*
3085	* We need to serialize streamon/off with queueing new requests.
3086	* These ioctls may trigger the cancellation of a streaming
3087	* operation, and that should not be mixed with queueing a new
3088	* request at the same time.
3089	*/
3090	if (v4l2_device_supports_requests(v4l2_dev: vfd->v4l2_dev) &&
3091	(cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF)) {
3092	req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex;
3093
3094	if (mutex_lock_interruptible(req_queue_lock))
3095	return -ERESTARTSYS;
3096	}
3097
3098	lock = v4l2_ioctl_get_lock(vdev: vfd, vfh, cmd, arg);
3099
3100	if (lock && mutex_lock_interruptible(lock)) {
3101	if (req_queue_lock)
3102	mutex_unlock(lock: req_queue_lock);
3103	return -ERESTARTSYS;
3104	}
3105
3106	if (!video_is_registered(vdev: vfd)) {
3107	ret = -ENODEV;
3108	goto unlock;
3109	}
3110
3111	if (v4l2_is_known_ioctl(cmd)) {
3112	info = &v4l2_ioctls[_IOC_NR(cmd)];
3113
3114	if (!is_valid_ioctl(vfd, cmd) &&
3115	!((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
3116	goto done;
3117
3118	if (vfh && (info->flags & INFO_FL_PRIO)) {
3119	ret = v4l2_prio_check(global: vfd->prio, local: vfh->prio);
3120	if (ret)
3121	goto done;
3122	}
3123	} else {
3124	default_info.ioctl = cmd;
3125	default_info.flags = 0;
3126	default_info.debug = v4l_print_default;
3127	info = &default_info;
3128	}
3129
3130	write_only = _IOC_DIR(cmd) == _IOC_WRITE;
3131	if (info != &default_info) {
3132	ret = info->func(ops, file, fh, arg);
3133	} else if (!ops->vidioc_default) {
3134	ret = -ENOTTY;
3135	} else {
3136	ret = ops->vidioc_default(file, fh,
3137	vfh ? v4l2_prio_check(global: vfd->prio, local: vfh->prio) >= 0 : 0,
3138	cmd, arg);
3139	}
3140
3141	done:
3142	if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) {
3143	if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) &&
3144	(cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF))
3145	goto unlock;
3146
3147	v4l_printk_ioctl(video_device_node_name(vdev: vfd), cmd);
3148	if (ret < 0)
3149	pr_cont(": error %ld", ret);
3150	if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG))
3151	pr_cont("\n");
3152	else if (_IOC_DIR(cmd) == _IOC_NONE)
3153	info->debug(arg, write_only);
3154	else {
3155	pr_cont(": ");
3156	info->debug(arg, write_only);
3157	}
3158	}
3159
3160	unlock:
3161	if (lock)
3162	mutex_unlock(lock);
3163	if (req_queue_lock)
3164	mutex_unlock(lock: req_queue_lock);
3165	return ret;
3166	}
3167
3168	static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
3169	void __user **user_ptr, void ***kernel_ptr)
3170	{
3171	int ret = 0;
3172
3173	switch (cmd) {
3174	case VIDIOC_PREPARE_BUF:
3175	case VIDIOC_QUERYBUF:
3176	case VIDIOC_QBUF:
3177	case VIDIOC_DQBUF: {
3178	struct v4l2_buffer *buf = parg;
3179
3180	if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
3181	if (buf->length > VIDEO_MAX_PLANES) {
3182	ret = -EINVAL;
3183	break;
3184	}
3185	*user_ptr = (void __user *)buf->m.planes;
3186	*kernel_ptr = (void **)&buf->m.planes;
3187	*array_size = sizeof(struct v4l2_plane) * buf->length;
3188	ret = 1;
3189	}
3190	break;
3191	}
3192
3193	case VIDIOC_G_EDID:
3194	case VIDIOC_S_EDID: {
3195	struct v4l2_edid *edid = parg;
3196
3197	if (edid->blocks) {
3198	if (edid->blocks > 256) {
3199	ret = -EINVAL;
3200	break;
3201	}
3202	*user_ptr = (void __user *)edid->edid;
3203	*kernel_ptr = (void **)&edid->edid;
3204	*array_size = edid->blocks * 128;
3205	ret = 1;
3206	}
3207	break;
3208	}
3209
3210	case VIDIOC_S_EXT_CTRLS:
3211	case VIDIOC_G_EXT_CTRLS:
3212	case VIDIOC_TRY_EXT_CTRLS: {
3213	struct v4l2_ext_controls *ctrls = parg;
3214
3215	if (ctrls->count != 0) {
3216	if (ctrls->count > V4L2_CID_MAX_CTRLS) {
3217	ret = -EINVAL;
3218	break;
3219	}
3220	*user_ptr = (void __user *)ctrls->controls;
3221	*kernel_ptr = (void **)&ctrls->controls;
3222	*array_size = sizeof(struct v4l2_ext_control)
3223	* ctrls->count;
3224	ret = 1;
3225	}
3226	break;
3227	}
3228
3229	case VIDIOC_SUBDEV_G_ROUTING:
3230	case VIDIOC_SUBDEV_S_ROUTING: {
3231	struct v4l2_subdev_routing *routing = parg;
3232
3233	if (routing->len_routes > 256)
3234	return -E2BIG;
3235
3236	*user_ptr = u64_to_user_ptr(routing->routes);
3237	*kernel_ptr = (void **)&routing->routes;
3238	*array_size = sizeof(struct v4l2_subdev_route)
3239	* routing->len_routes;
3240	ret = 1;
3241	break;
3242	}
3243	}
3244
3245	return ret;
3246	}
3247
3248	static unsigned int video_translate_cmd(unsigned int cmd)
3249	{
3250	#if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME)
3251	switch (cmd) {
3252	case VIDIOC_DQEVENT_TIME32:
3253	return VIDIOC_DQEVENT;
3254	case VIDIOC_QUERYBUF_TIME32:
3255	return VIDIOC_QUERYBUF;
3256	case VIDIOC_QBUF_TIME32:
3257	return VIDIOC_QBUF;
3258	case VIDIOC_DQBUF_TIME32:
3259	return VIDIOC_DQBUF;
3260	case VIDIOC_PREPARE_BUF_TIME32:
3261	return VIDIOC_PREPARE_BUF;
3262	}
3263	#endif
3264	if (in_compat_syscall())
3265	return v4l2_compat_translate_cmd(cmd);
3266
3267	return cmd;
3268	}
3269
3270	static int video_get_user(void __user *arg, void *parg,
3271	unsigned int real_cmd, unsigned int cmd,
3272	bool *always_copy)
3273	{
3274	unsigned int n = _IOC_SIZE(real_cmd);
3275	int err = 0;
3276
3277	if (!(_IOC_DIR(cmd) & _IOC_WRITE)) {
3278	/* read-only ioctl */
3279	memset(parg, 0, n);
3280	return 0;
3281	}
3282
3283	/*
3284	* In some cases, only a few fields are used as input,
3285	* i.e. when the app sets "index" and then the driver
3286	* fills in the rest of the structure for the thing
3287	* with that index. We only need to copy up the first
3288	* non-input field.
3289	*/
3290	if (v4l2_is_known_ioctl(cmd: real_cmd)) {
3291	u32 flags = v4l2_ioctls[_IOC_NR(real_cmd)].flags;
3292
3293	if (flags & INFO_FL_CLEAR_MASK)
3294	n = (flags & INFO_FL_CLEAR_MASK) >> 16;
3295	*always_copy = flags & INFO_FL_ALWAYS_COPY;
3296	}
3297
3298	if (cmd == real_cmd) {
3299	if (copy_from_user(to: parg, from: (void __user *)arg, n))
3300	err = -EFAULT;
3301	} else if (in_compat_syscall()) {
3302	memset(parg, 0, n);
3303	err = v4l2_compat_get_user(arg, parg, cmd);
3304	} else {
3305	memset(parg, 0, n);
3306	#if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME)
3307	switch (cmd) {
3308	case VIDIOC_QUERYBUF_TIME32:
3309	case VIDIOC_QBUF_TIME32:
3310	case VIDIOC_DQBUF_TIME32:
3311	case VIDIOC_PREPARE_BUF_TIME32: {
3312	struct v4l2_buffer_time32 vb32;
3313	struct v4l2_buffer *vb = parg;
3314
3315	if (copy_from_user(&vb32, arg, sizeof(vb32)))
3316	return -EFAULT;
3317
3318	*vb = (struct v4l2_buffer) {
3319	.index = vb32.index,
3320	.type = vb32.type,
3321	.bytesused = vb32.bytesused,
3322	.flags = vb32.flags,
3323	.field = vb32.field,
3324	.timestamp.tv_sec = vb32.timestamp.tv_sec,
3325	.timestamp.tv_usec = vb32.timestamp.tv_usec,
3326	.timecode = vb32.timecode,
3327	.sequence = vb32.sequence,
3328	.memory = vb32.memory,
3329	.m.userptr = vb32.m.userptr,
3330	.length = vb32.length,
3331	.request_fd = vb32.request_fd,
3332	};
3333	break;
3334	}
3335	}
3336	#endif
3337	}
3338
3339	/* zero out anything we don't copy from userspace */
3340	if (!err && n < _IOC_SIZE(real_cmd))
3341	memset((u8 *)parg + n, 0, _IOC_SIZE(real_cmd) - n);
3342	return err;
3343	}
3344
3345	static int video_put_user(void __user *arg, void *parg,
3346	unsigned int real_cmd, unsigned int cmd)
3347	{
3348	if (!(_IOC_DIR(cmd) & _IOC_READ))
3349	return 0;
3350
3351	if (cmd == real_cmd) {
3352	/* Copy results into user buffer */
3353	if (copy_to_user(to: arg, from: parg, _IOC_SIZE(cmd)))
3354	return -EFAULT;
3355	return 0;
3356	}
3357
3358	if (in_compat_syscall())
3359	return v4l2_compat_put_user(arg, parg, cmd);
3360
3361	#if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME)
3362	switch (cmd) {
3363	case VIDIOC_DQEVENT_TIME32: {
3364	struct v4l2_event *ev = parg;
3365	struct v4l2_event_time32 ev32;
3366
3367	memset(&ev32, 0, sizeof(ev32));
3368
3369	ev32.type = ev->type;
3370	ev32.pending = ev->pending;
3371	ev32.sequence = ev->sequence;
3372	ev32.timestamp.tv_sec = ev->timestamp.tv_sec;
3373	ev32.timestamp.tv_nsec = ev->timestamp.tv_nsec;
3374	ev32.id = ev->id;
3375
3376	memcpy(&ev32.u, &ev->u, sizeof(ev->u));
3377	memcpy(&ev32.reserved, &ev->reserved, sizeof(ev->reserved));
3378
3379	if (copy_to_user(arg, &ev32, sizeof(ev32)))
3380	return -EFAULT;
3381	break;
3382	}
3383	case VIDIOC_QUERYBUF_TIME32:
3384	case VIDIOC_QBUF_TIME32:
3385	case VIDIOC_DQBUF_TIME32:
3386	case VIDIOC_PREPARE_BUF_TIME32: {
3387	struct v4l2_buffer *vb = parg;
3388	struct v4l2_buffer_time32 vb32;
3389
3390	memset(&vb32, 0, sizeof(vb32));
3391
3392	vb32.index = vb->index;
3393	vb32.type = vb->type;
3394	vb32.bytesused = vb->bytesused;
3395	vb32.flags = vb->flags;
3396	vb32.field = vb->field;
3397	vb32.timestamp.tv_sec = vb->timestamp.tv_sec;
3398	vb32.timestamp.tv_usec = vb->timestamp.tv_usec;
3399	vb32.timecode = vb->timecode;
3400	vb32.sequence = vb->sequence;
3401	vb32.memory = vb->memory;
3402	vb32.m.userptr = vb->m.userptr;
3403	vb32.length = vb->length;
3404	vb32.request_fd = vb->request_fd;
3405
3406	if (copy_to_user(arg, &vb32, sizeof(vb32)))
3407	return -EFAULT;
3408	break;
3409	}
3410	}
3411	#endif
3412
3413	return 0;
3414	}
3415
3416	long
3417	video_usercopy(struct file *file, unsigned int orig_cmd, unsigned long arg,
3418	v4l2_kioctl func)
3419	{
3420	char sbuf[128];
3421	void *mbuf = NULL, *array_buf = NULL;
3422	void *parg = (void *)arg;
3423	long err = -EINVAL;
3424	bool has_array_args;
3425	bool always_copy = false;
3426	size_t array_size = 0;
3427	void __user *user_ptr = NULL;
3428	void **kernel_ptr = NULL;
3429	unsigned int cmd = video_translate_cmd(cmd: orig_cmd);
3430	const size_t ioc_size = _IOC_SIZE(cmd);
3431
3432	/* Copy arguments into temp kernel buffer */
3433	if (_IOC_DIR(cmd) != _IOC_NONE) {
3434	if (ioc_size <= sizeof(sbuf)) {
3435	parg = sbuf;
3436	} else {
3437	/* too big to allocate from stack */
3438	mbuf = kmalloc(ioc_size, GFP_KERNEL);
3439	if (NULL == mbuf)
3440	return -ENOMEM;
3441	parg = mbuf;
3442	}
3443
3444	err = video_get_user(arg: (void __user *)arg, parg, real_cmd: cmd,
3445	cmd: orig_cmd, always_copy: &always_copy);
3446	if (err)
3447	goto out;
3448	}
3449
3450	err = check_array_args(cmd, parg, array_size: &array_size, user_ptr: &user_ptr, kernel_ptr: &kernel_ptr);
3451	if (err < 0)
3452	goto out;
3453	has_array_args = err;
3454
3455	if (has_array_args) {
3456	array_buf = kvmalloc(array_size, GFP_KERNEL);
3457	err = -ENOMEM;
3458	if (array_buf == NULL)
3459	goto out;
3460	if (in_compat_syscall())
3461	err = v4l2_compat_get_array_args(file, mbuf: array_buf,
3462	user_ptr, array_size,
3463	cmd: orig_cmd, arg: parg);
3464	else
3465	err = copy_from_user(to: array_buf, from: user_ptr, n: array_size) ?
3466	-EFAULT : 0;
3467	if (err)
3468	goto out;
3469	*kernel_ptr = array_buf;
3470	}
3471
3472	/* Handles IOCTL */
3473	err = func(file, cmd, parg);
3474	if (err == -ENOTTY || err == -ENOIOCTLCMD) {
3475	err = -ENOTTY;
3476	goto out;
3477	}
3478
3479	if (err == 0) {
3480	if (cmd == VIDIOC_DQBUF)
3481	trace_v4l2_dqbuf(minor: video_devdata(file)->minor, buf: parg);
3482	else if (cmd == VIDIOC_QBUF)
3483	trace_v4l2_qbuf(minor: video_devdata(file)->minor, buf: parg);
3484	}
3485
3486	/*
3487	* Some ioctls can return an error, but still have valid
3488	* results that must be returned.
3489	*
3490	* FIXME: subdev IOCTLS are partially handled here and partially in
3491	* v4l2-subdev.c and the 'always_copy' flag can only be set for IOCTLS
3492	* defined here as part of the 'v4l2_ioctls' array. As
3493	* VIDIOC_SUBDEV_[GS]_ROUTING needs to return results to applications
3494	* even in case of failure, but it is not defined here as part of the
3495	* 'v4l2_ioctls' array, insert an ad-hoc check to address that.
3496	*/
3497	if (cmd == VIDIOC_SUBDEV_G_ROUTING || cmd == VIDIOC_SUBDEV_S_ROUTING)
3498	always_copy = true;
3499
3500	if (err < 0 && !always_copy)
3501	goto out;
3502
3503	if (has_array_args) {
3504	*kernel_ptr = (void __force *)user_ptr;
3505	if (in_compat_syscall()) {
3506	int put_err;
3507
3508	put_err = v4l2_compat_put_array_args(file, user_ptr,
3509	mbuf: array_buf,
3510	array_size,
3511	cmd: orig_cmd, arg: parg);
3512	if (put_err)
3513	err = put_err;
3514	} else if (copy_to_user(to: user_ptr, from: array_buf, n: array_size)) {
3515	err = -EFAULT;
3516	}
3517	}
3518
3519	if (video_put_user(arg: (void __user *)arg, parg, real_cmd: cmd, cmd: orig_cmd))
3520	err = -EFAULT;
3521	out:
3522	kvfree(addr: array_buf);
3523	kfree(objp: mbuf);
3524	return err;
3525	}
3526
3527	long video_ioctl2(struct file *file,
3528	unsigned int cmd, unsigned long arg)
3529	{
3530	return video_usercopy(file, orig_cmd: cmd, arg, func: __video_do_ioctl);
3531	}
3532	EXPORT_SYMBOL(video_ioctl2);
3533