2 * Video capture interface for Linux version 2
4 * A generic framework to process V4L2 ioctl commands.
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
11 * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1)
12 * Mauro Carvalho Chehab <mchehab@infradead.org> (version 2)
15 #include <linux/module.h>
16 #include <linux/slab.h>
17 #include <linux/types.h>
18 #include <linux/kernel.h>
19 #include <linux/version.h>
21 #include <linux/videodev2.h>
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-core.h>
31 #define CREATE_TRACE_POINTS
32 #include <trace/events/v4l2.h>
34 /* Zero out the end of the struct pointed to by p. Everything after, but
35 * not including, the specified field is cleared. */
36 #define CLEAR_AFTER_FIELD(p, field) \
37 memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \
38 0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field))
40 #define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls)
47 static const struct std_descr standards
[] = {
48 { V4L2_STD_NTSC
, "NTSC" },
49 { V4L2_STD_NTSC_M
, "NTSC-M" },
50 { V4L2_STD_NTSC_M_JP
, "NTSC-M-JP" },
51 { V4L2_STD_NTSC_M_KR
, "NTSC-M-KR" },
52 { V4L2_STD_NTSC_443
, "NTSC-443" },
53 { V4L2_STD_PAL
, "PAL" },
54 { V4L2_STD_PAL_BG
, "PAL-BG" },
55 { V4L2_STD_PAL_B
, "PAL-B" },
56 { V4L2_STD_PAL_B1
, "PAL-B1" },
57 { V4L2_STD_PAL_G
, "PAL-G" },
58 { V4L2_STD_PAL_H
, "PAL-H" },
59 { V4L2_STD_PAL_I
, "PAL-I" },
60 { V4L2_STD_PAL_DK
, "PAL-DK" },
61 { V4L2_STD_PAL_D
, "PAL-D" },
62 { V4L2_STD_PAL_D1
, "PAL-D1" },
63 { V4L2_STD_PAL_K
, "PAL-K" },
64 { V4L2_STD_PAL_M
, "PAL-M" },
65 { V4L2_STD_PAL_N
, "PAL-N" },
66 { V4L2_STD_PAL_Nc
, "PAL-Nc" },
67 { V4L2_STD_PAL_60
, "PAL-60" },
68 { V4L2_STD_SECAM
, "SECAM" },
69 { V4L2_STD_SECAM_B
, "SECAM-B" },
70 { V4L2_STD_SECAM_G
, "SECAM-G" },
71 { V4L2_STD_SECAM_H
, "SECAM-H" },
72 { V4L2_STD_SECAM_DK
, "SECAM-DK" },
73 { V4L2_STD_SECAM_D
, "SECAM-D" },
74 { V4L2_STD_SECAM_K
, "SECAM-K" },
75 { V4L2_STD_SECAM_K1
, "SECAM-K1" },
76 { V4L2_STD_SECAM_L
, "SECAM-L" },
77 { V4L2_STD_SECAM_LC
, "SECAM-Lc" },
81 /* video4linux standard ID conversion to standard name
83 const char *v4l2_norm_to_name(v4l2_std_id id
)
88 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
89 64 bit comparations. So, on that architecture, with some gcc
90 variants, compilation fails. Currently, the max value is 30bit wide.
94 for (i
= 0; standards
[i
].std
; i
++)
95 if (myid
== standards
[i
].std
)
97 return standards
[i
].descr
;
99 EXPORT_SYMBOL(v4l2_norm_to_name
);
101 /* Returns frame period for the given standard */
102 void v4l2_video_std_frame_period(int id
, struct v4l2_fract
*frameperiod
)
104 if (id
& V4L2_STD_525_60
) {
105 frameperiod
->numerator
= 1001;
106 frameperiod
->denominator
= 30000;
108 frameperiod
->numerator
= 1;
109 frameperiod
->denominator
= 25;
112 EXPORT_SYMBOL(v4l2_video_std_frame_period
);
114 /* Fill in the fields of a v4l2_standard structure according to the
115 'id' and 'transmission' parameters. Returns negative on error. */
116 int v4l2_video_std_construct(struct v4l2_standard
*vs
,
117 int id
, const char *name
)
120 v4l2_video_std_frame_period(id
, &vs
->frameperiod
);
121 vs
->framelines
= (id
& V4L2_STD_525_60
) ? 525 : 625;
122 strlcpy(vs
->name
, name
, sizeof(vs
->name
));
125 EXPORT_SYMBOL(v4l2_video_std_construct
);
127 /* ----------------------------------------------------------------- */
128 /* some arrays for pretty-printing debug messages of enum types */
130 const char *v4l2_field_names
[] = {
131 [V4L2_FIELD_ANY
] = "any",
132 [V4L2_FIELD_NONE
] = "none",
133 [V4L2_FIELD_TOP
] = "top",
134 [V4L2_FIELD_BOTTOM
] = "bottom",
135 [V4L2_FIELD_INTERLACED
] = "interlaced",
136 [V4L2_FIELD_SEQ_TB
] = "seq-tb",
137 [V4L2_FIELD_SEQ_BT
] = "seq-bt",
138 [V4L2_FIELD_ALTERNATE
] = "alternate",
139 [V4L2_FIELD_INTERLACED_TB
] = "interlaced-tb",
140 [V4L2_FIELD_INTERLACED_BT
] = "interlaced-bt",
142 EXPORT_SYMBOL(v4l2_field_names
);
144 const char *v4l2_type_names
[] = {
145 [V4L2_BUF_TYPE_VIDEO_CAPTURE
] = "vid-cap",
146 [V4L2_BUF_TYPE_VIDEO_OVERLAY
] = "vid-overlay",
147 [V4L2_BUF_TYPE_VIDEO_OUTPUT
] = "vid-out",
148 [V4L2_BUF_TYPE_VBI_CAPTURE
] = "vbi-cap",
149 [V4L2_BUF_TYPE_VBI_OUTPUT
] = "vbi-out",
150 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE
] = "sliced-vbi-cap",
151 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT
] = "sliced-vbi-out",
152 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
] = "vid-out-overlay",
153 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE
] = "vid-cap-mplane",
154 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE
] = "vid-out-mplane",
155 [V4L2_BUF_TYPE_SDR_CAPTURE
] = "sdr-cap",
157 EXPORT_SYMBOL(v4l2_type_names
);
159 static const char *v4l2_memory_names
[] = {
160 [V4L2_MEMORY_MMAP
] = "mmap",
161 [V4L2_MEMORY_USERPTR
] = "userptr",
162 [V4L2_MEMORY_OVERLAY
] = "overlay",
163 [V4L2_MEMORY_DMABUF
] = "dmabuf",
166 #define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown")
168 /* ------------------------------------------------------------------ */
169 /* debug help functions */
171 static void v4l_print_querycap(const void *arg
, bool write_only
)
173 const struct v4l2_capability
*p
= arg
;
175 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, "
176 "capabilities=0x%08x, device_caps=0x%08x\n",
177 (int)sizeof(p
->driver
), p
->driver
,
178 (int)sizeof(p
->card
), p
->card
,
179 (int)sizeof(p
->bus_info
), p
->bus_info
,
180 p
->version
, p
->capabilities
, p
->device_caps
);
183 static void v4l_print_enuminput(const void *arg
, bool write_only
)
185 const struct v4l2_input
*p
= arg
;
187 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, "
188 "std=0x%08Lx, status=0x%x, capabilities=0x%x\n",
189 p
->index
, (int)sizeof(p
->name
), p
->name
, p
->type
, p
->audioset
,
190 p
->tuner
, (unsigned long long)p
->std
, p
->status
,
194 static void v4l_print_enumoutput(const void *arg
, bool write_only
)
196 const struct v4l2_output
*p
= arg
;
198 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, "
199 "modulator=%u, std=0x%08Lx, capabilities=0x%x\n",
200 p
->index
, (int)sizeof(p
->name
), p
->name
, p
->type
, p
->audioset
,
201 p
->modulator
, (unsigned long long)p
->std
, p
->capabilities
);
204 static void v4l_print_audio(const void *arg
, bool write_only
)
206 const struct v4l2_audio
*p
= arg
;
209 pr_cont("index=%u, mode=0x%x\n", p
->index
, p
->mode
);
211 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
212 p
->index
, (int)sizeof(p
->name
), p
->name
,
213 p
->capability
, p
->mode
);
216 static void v4l_print_audioout(const void *arg
, bool write_only
)
218 const struct v4l2_audioout
*p
= arg
;
221 pr_cont("index=%u\n", p
->index
);
223 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
224 p
->index
, (int)sizeof(p
->name
), p
->name
,
225 p
->capability
, p
->mode
);
228 static void v4l_print_fmtdesc(const void *arg
, bool write_only
)
230 const struct v4l2_fmtdesc
*p
= arg
;
232 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%c%c%c%c, description='%.*s'\n",
233 p
->index
, prt_names(p
->type
, v4l2_type_names
),
234 p
->flags
, (p
->pixelformat
& 0xff),
235 (p
->pixelformat
>> 8) & 0xff,
236 (p
->pixelformat
>> 16) & 0xff,
237 (p
->pixelformat
>> 24) & 0xff,
238 (int)sizeof(p
->description
), p
->description
);
241 static void v4l_print_format(const void *arg
, bool write_only
)
243 const struct v4l2_format
*p
= arg
;
244 const struct v4l2_pix_format
*pix
;
245 const struct v4l2_pix_format_mplane
*mp
;
246 const struct v4l2_vbi_format
*vbi
;
247 const struct v4l2_sliced_vbi_format
*sliced
;
248 const struct v4l2_window
*win
;
249 const struct v4l2_sdr_format
*sdr
;
252 pr_cont("type=%s", prt_names(p
->type
, v4l2_type_names
));
254 case V4L2_BUF_TYPE_VIDEO_CAPTURE
:
255 case V4L2_BUF_TYPE_VIDEO_OUTPUT
:
257 pr_cont(", width=%u, height=%u, "
258 "pixelformat=%c%c%c%c, field=%s, "
259 "bytesperline=%u, sizeimage=%u, colorspace=%d, "
261 pix
->width
, pix
->height
,
262 (pix
->pixelformat
& 0xff),
263 (pix
->pixelformat
>> 8) & 0xff,
264 (pix
->pixelformat
>> 16) & 0xff,
265 (pix
->pixelformat
>> 24) & 0xff,
266 prt_names(pix
->field
, v4l2_field_names
),
267 pix
->bytesperline
, pix
->sizeimage
,
268 pix
->colorspace
, pix
->flags
);
270 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE
:
271 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE
:
273 pr_cont(", width=%u, height=%u, "
274 "format=%c%c%c%c, field=%s, "
275 "colorspace=%d, num_planes=%u\n",
276 mp
->width
, mp
->height
,
277 (mp
->pixelformat
& 0xff),
278 (mp
->pixelformat
>> 8) & 0xff,
279 (mp
->pixelformat
>> 16) & 0xff,
280 (mp
->pixelformat
>> 24) & 0xff,
281 prt_names(mp
->field
, v4l2_field_names
),
282 mp
->colorspace
, mp
->num_planes
);
283 for (i
= 0; i
< mp
->num_planes
; i
++)
284 printk(KERN_DEBUG
"plane %u: bytesperline=%u sizeimage=%u\n", i
,
285 mp
->plane_fmt
[i
].bytesperline
,
286 mp
->plane_fmt
[i
].sizeimage
);
288 case V4L2_BUF_TYPE_VIDEO_OVERLAY
:
289 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
:
291 /* Note: we can't print the clip list here since the clips
292 * pointer is a userspace pointer, not a kernelspace
294 pr_cont(", wxh=%dx%d, x,y=%d,%d, field=%s, chromakey=0x%08x, clipcount=%u, clips=%p, bitmap=%p, global_alpha=0x%02x\n",
295 win
->w
.width
, win
->w
.height
, win
->w
.left
, win
->w
.top
,
296 prt_names(win
->field
, v4l2_field_names
),
297 win
->chromakey
, win
->clipcount
, win
->clips
,
298 win
->bitmap
, win
->global_alpha
);
300 case V4L2_BUF_TYPE_VBI_CAPTURE
:
301 case V4L2_BUF_TYPE_VBI_OUTPUT
:
303 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, "
304 "sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n",
305 vbi
->sampling_rate
, vbi
->offset
,
306 vbi
->samples_per_line
,
307 (vbi
->sample_format
& 0xff),
308 (vbi
->sample_format
>> 8) & 0xff,
309 (vbi
->sample_format
>> 16) & 0xff,
310 (vbi
->sample_format
>> 24) & 0xff,
311 vbi
->start
[0], vbi
->start
[1],
312 vbi
->count
[0], vbi
->count
[1]);
314 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE
:
315 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT
:
316 sliced
= &p
->fmt
.sliced
;
317 pr_cont(", service_set=0x%08x, io_size=%d\n",
318 sliced
->service_set
, sliced
->io_size
);
319 for (i
= 0; i
< 24; i
++)
320 printk(KERN_DEBUG
"line[%02u]=0x%04x, 0x%04x\n", i
,
321 sliced
->service_lines
[0][i
],
322 sliced
->service_lines
[1][i
]);
324 case V4L2_BUF_TYPE_SDR_CAPTURE
:
326 pr_cont(", pixelformat=%c%c%c%c\n",
327 (sdr
->pixelformat
>> 0) & 0xff,
328 (sdr
->pixelformat
>> 8) & 0xff,
329 (sdr
->pixelformat
>> 16) & 0xff,
330 (sdr
->pixelformat
>> 24) & 0xff);
335 static void v4l_print_framebuffer(const void *arg
, bool write_only
)
337 const struct v4l2_framebuffer
*p
= arg
;
339 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, "
340 "height=%u, pixelformat=%c%c%c%c, "
341 "bytesperline=%u, sizeimage=%u, colorspace=%d\n",
342 p
->capability
, p
->flags
, p
->base
,
343 p
->fmt
.width
, p
->fmt
.height
,
344 (p
->fmt
.pixelformat
& 0xff),
345 (p
->fmt
.pixelformat
>> 8) & 0xff,
346 (p
->fmt
.pixelformat
>> 16) & 0xff,
347 (p
->fmt
.pixelformat
>> 24) & 0xff,
348 p
->fmt
.bytesperline
, p
->fmt
.sizeimage
,
352 static void v4l_print_buftype(const void *arg
, bool write_only
)
354 pr_cont("type=%s\n", prt_names(*(u32
*)arg
, v4l2_type_names
));
357 static void v4l_print_modulator(const void *arg
, bool write_only
)
359 const struct v4l2_modulator
*p
= arg
;
362 pr_cont("index=%u, txsubchans=0x%x\n", p
->index
, p
->txsubchans
);
364 pr_cont("index=%u, name=%.*s, capability=0x%x, "
365 "rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
366 p
->index
, (int)sizeof(p
->name
), p
->name
, p
->capability
,
367 p
->rangelow
, p
->rangehigh
, p
->txsubchans
);
370 static void v4l_print_tuner(const void *arg
, bool write_only
)
372 const struct v4l2_tuner
*p
= arg
;
375 pr_cont("index=%u, audmode=%u\n", p
->index
, p
->audmode
);
377 pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, "
378 "rangelow=%u, rangehigh=%u, signal=%u, afc=%d, "
379 "rxsubchans=0x%x, audmode=%u\n",
380 p
->index
, (int)sizeof(p
->name
), p
->name
, p
->type
,
381 p
->capability
, p
->rangelow
,
382 p
->rangehigh
, p
->signal
, p
->afc
,
383 p
->rxsubchans
, p
->audmode
);
386 static void v4l_print_frequency(const void *arg
, bool write_only
)
388 const struct v4l2_frequency
*p
= arg
;
390 pr_cont("tuner=%u, type=%u, frequency=%u\n",
391 p
->tuner
, p
->type
, p
->frequency
);
394 static void v4l_print_standard(const void *arg
, bool write_only
)
396 const struct v4l2_standard
*p
= arg
;
398 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, "
399 "framelines=%u\n", p
->index
,
400 (unsigned long long)p
->id
, (int)sizeof(p
->name
), p
->name
,
401 p
->frameperiod
.numerator
,
402 p
->frameperiod
.denominator
,
406 static void v4l_print_std(const void *arg
, bool write_only
)
408 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg
);
411 static void v4l_print_hw_freq_seek(const void *arg
, bool write_only
)
413 const struct v4l2_hw_freq_seek
*p
= arg
;
415 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, "
416 "rangelow=%u, rangehigh=%u\n",
417 p
->tuner
, p
->type
, p
->seek_upward
, p
->wrap_around
, p
->spacing
,
418 p
->rangelow
, p
->rangehigh
);
421 static void v4l_print_requestbuffers(const void *arg
, bool write_only
)
423 const struct v4l2_requestbuffers
*p
= arg
;
425 pr_cont("count=%d, type=%s, memory=%s\n",
427 prt_names(p
->type
, v4l2_type_names
),
428 prt_names(p
->memory
, v4l2_memory_names
));
431 static void v4l_print_buffer(const void *arg
, bool write_only
)
433 const struct v4l2_buffer
*p
= arg
;
434 const struct v4l2_timecode
*tc
= &p
->timecode
;
435 const struct v4l2_plane
*plane
;
438 pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, "
439 "flags=0x%08x, field=%s, sequence=%d, memory=%s",
440 p
->timestamp
.tv_sec
/ 3600,
441 (int)(p
->timestamp
.tv_sec
/ 60) % 60,
442 (int)(p
->timestamp
.tv_sec
% 60),
443 (long)p
->timestamp
.tv_usec
,
445 prt_names(p
->type
, v4l2_type_names
),
446 p
->flags
, prt_names(p
->field
, v4l2_field_names
),
447 p
->sequence
, prt_names(p
->memory
, v4l2_memory_names
));
449 if (V4L2_TYPE_IS_MULTIPLANAR(p
->type
) && p
->m
.planes
) {
451 for (i
= 0; i
< p
->length
; ++i
) {
452 plane
= &p
->m
.planes
[i
];
454 "plane %d: bytesused=%d, data_offset=0x%08x, "
455 "offset/userptr=0x%lx, length=%d\n",
456 i
, plane
->bytesused
, plane
->data_offset
,
457 plane
->m
.userptr
, plane
->length
);
460 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n",
461 p
->bytesused
, p
->m
.userptr
, p
->length
);
464 printk(KERN_DEBUG
"timecode=%02d:%02d:%02d type=%d, "
465 "flags=0x%08x, frames=%d, userbits=0x%08x\n",
466 tc
->hours
, tc
->minutes
, tc
->seconds
,
467 tc
->type
, tc
->flags
, tc
->frames
, *(__u32
*)tc
->userbits
);
470 static void v4l_print_exportbuffer(const void *arg
, bool write_only
)
472 const struct v4l2_exportbuffer
*p
= arg
;
474 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n",
475 p
->fd
, prt_names(p
->type
, v4l2_type_names
),
476 p
->index
, p
->plane
, p
->flags
);
479 static void v4l_print_create_buffers(const void *arg
, bool write_only
)
481 const struct v4l2_create_buffers
*p
= arg
;
483 pr_cont("index=%d, count=%d, memory=%s, ",
485 prt_names(p
->memory
, v4l2_memory_names
));
486 v4l_print_format(&p
->format
, write_only
);
489 static void v4l_print_streamparm(const void *arg
, bool write_only
)
491 const struct v4l2_streamparm
*p
= arg
;
493 pr_cont("type=%s", prt_names(p
->type
, v4l2_type_names
));
495 if (p
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
||
496 p
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE
) {
497 const struct v4l2_captureparm
*c
= &p
->parm
.capture
;
499 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, "
500 "extendedmode=%d, readbuffers=%d\n",
501 c
->capability
, c
->capturemode
,
502 c
->timeperframe
.numerator
, c
->timeperframe
.denominator
,
503 c
->extendedmode
, c
->readbuffers
);
504 } else if (p
->type
== V4L2_BUF_TYPE_VIDEO_OUTPUT
||
505 p
->type
== V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE
) {
506 const struct v4l2_outputparm
*c
= &p
->parm
.output
;
508 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, "
509 "extendedmode=%d, writebuffers=%d\n",
510 c
->capability
, c
->outputmode
,
511 c
->timeperframe
.numerator
, c
->timeperframe
.denominator
,
512 c
->extendedmode
, c
->writebuffers
);
518 static void v4l_print_queryctrl(const void *arg
, bool write_only
)
520 const struct v4l2_queryctrl
*p
= arg
;
522 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, "
523 "step=%d, default=%d, flags=0x%08x\n",
524 p
->id
, p
->type
, (int)sizeof(p
->name
), p
->name
,
525 p
->minimum
, p
->maximum
,
526 p
->step
, p
->default_value
, p
->flags
);
529 static void v4l_print_query_ext_ctrl(const void *arg
, bool write_only
)
531 const struct v4l2_query_ext_ctrl
*p
= arg
;
533 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%lld/%lld, "
534 "step=%lld, default=%lld, flags=0x%08x, elem_size=%u, elems=%u, "
535 "nr_of_dims=%u, dims=%u,%u,%u,%u\n",
536 p
->id
, p
->type
, (int)sizeof(p
->name
), p
->name
,
537 p
->minimum
, p
->maximum
,
538 p
->step
, p
->default_value
, p
->flags
,
539 p
->elem_size
, p
->elems
, p
->nr_of_dims
,
540 p
->dims
[0], p
->dims
[1], p
->dims
[2], p
->dims
[3]);
543 static void v4l_print_querymenu(const void *arg
, bool write_only
)
545 const struct v4l2_querymenu
*p
= arg
;
547 pr_cont("id=0x%x, index=%d\n", p
->id
, p
->index
);
550 static void v4l_print_control(const void *arg
, bool write_only
)
552 const struct v4l2_control
*p
= arg
;
554 pr_cont("id=0x%x, value=%d\n", p
->id
, p
->value
);
557 static void v4l_print_ext_controls(const void *arg
, bool write_only
)
559 const struct v4l2_ext_controls
*p
= arg
;
562 pr_cont("class=0x%x, count=%d, error_idx=%d",
563 p
->ctrl_class
, p
->count
, p
->error_idx
);
564 for (i
= 0; i
< p
->count
; i
++) {
565 if (!p
->controls
[i
].size
)
566 pr_cont(", id/val=0x%x/0x%x",
567 p
->controls
[i
].id
, p
->controls
[i
].value
);
569 pr_cont(", id/size=0x%x/%u",
570 p
->controls
[i
].id
, p
->controls
[i
].size
);
575 static void v4l_print_cropcap(const void *arg
, bool write_only
)
577 const struct v4l2_cropcap
*p
= arg
;
579 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, "
580 "defrect wxh=%dx%d, x,y=%d,%d, "
581 "pixelaspect %d/%d\n",
582 prt_names(p
->type
, v4l2_type_names
),
583 p
->bounds
.width
, p
->bounds
.height
,
584 p
->bounds
.left
, p
->bounds
.top
,
585 p
->defrect
.width
, p
->defrect
.height
,
586 p
->defrect
.left
, p
->defrect
.top
,
587 p
->pixelaspect
.numerator
, p
->pixelaspect
.denominator
);
590 static void v4l_print_crop(const void *arg
, bool write_only
)
592 const struct v4l2_crop
*p
= arg
;
594 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n",
595 prt_names(p
->type
, v4l2_type_names
),
596 p
->c
.width
, p
->c
.height
,
597 p
->c
.left
, p
->c
.top
);
600 static void v4l_print_selection(const void *arg
, bool write_only
)
602 const struct v4l2_selection
*p
= arg
;
604 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n",
605 prt_names(p
->type
, v4l2_type_names
),
607 p
->r
.width
, p
->r
.height
, p
->r
.left
, p
->r
.top
);
610 static void v4l_print_jpegcompression(const void *arg
, bool write_only
)
612 const struct v4l2_jpegcompression
*p
= arg
;
614 pr_cont("quality=%d, APPn=%d, APP_len=%d, "
615 "COM_len=%d, jpeg_markers=0x%x\n",
616 p
->quality
, p
->APPn
, p
->APP_len
,
617 p
->COM_len
, p
->jpeg_markers
);
620 static void v4l_print_enc_idx(const void *arg
, bool write_only
)
622 const struct v4l2_enc_idx
*p
= arg
;
624 pr_cont("entries=%d, entries_cap=%d\n",
625 p
->entries
, p
->entries_cap
);
628 static void v4l_print_encoder_cmd(const void *arg
, bool write_only
)
630 const struct v4l2_encoder_cmd
*p
= arg
;
632 pr_cont("cmd=%d, flags=0x%x\n",
636 static void v4l_print_decoder_cmd(const void *arg
, bool write_only
)
638 const struct v4l2_decoder_cmd
*p
= arg
;
640 pr_cont("cmd=%d, flags=0x%x\n", p
->cmd
, p
->flags
);
642 if (p
->cmd
== V4L2_DEC_CMD_START
)
643 pr_info("speed=%d, format=%u\n",
644 p
->start
.speed
, p
->start
.format
);
645 else if (p
->cmd
== V4L2_DEC_CMD_STOP
)
646 pr_info("pts=%llu\n", p
->stop
.pts
);
649 static void v4l_print_dbg_chip_info(const void *arg
, bool write_only
)
651 const struct v4l2_dbg_chip_info
*p
= arg
;
653 pr_cont("type=%u, ", p
->match
.type
);
654 if (p
->match
.type
== V4L2_CHIP_MATCH_I2C_DRIVER
)
655 pr_cont("name=%.*s, ",
656 (int)sizeof(p
->match
.name
), p
->match
.name
);
658 pr_cont("addr=%u, ", p
->match
.addr
);
659 pr_cont("name=%.*s\n", (int)sizeof(p
->name
), p
->name
);
662 static void v4l_print_dbg_register(const void *arg
, bool write_only
)
664 const struct v4l2_dbg_register
*p
= arg
;
666 pr_cont("type=%u, ", p
->match
.type
);
667 if (p
->match
.type
== V4L2_CHIP_MATCH_I2C_DRIVER
)
668 pr_cont("name=%.*s, ",
669 (int)sizeof(p
->match
.name
), p
->match
.name
);
671 pr_cont("addr=%u, ", p
->match
.addr
);
672 pr_cont("reg=0x%llx, val=0x%llx\n",
676 static void v4l_print_dv_timings(const void *arg
, bool write_only
)
678 const struct v4l2_dv_timings
*p
= arg
;
681 case V4L2_DV_BT_656_1120
:
682 pr_cont("type=bt-656/1120, interlaced=%u, "
684 "width=%u, height=%u, polarities=0x%x, "
685 "hfrontporch=%u, hsync=%u, "
686 "hbackporch=%u, vfrontporch=%u, "
687 "vsync=%u, vbackporch=%u, "
688 "il_vfrontporch=%u, il_vsync=%u, "
689 "il_vbackporch=%u, standards=0x%x, flags=0x%x\n",
690 p
->bt
.interlaced
, p
->bt
.pixelclock
,
691 p
->bt
.width
, p
->bt
.height
,
692 p
->bt
.polarities
, p
->bt
.hfrontporch
,
693 p
->bt
.hsync
, p
->bt
.hbackporch
,
694 p
->bt
.vfrontporch
, p
->bt
.vsync
,
695 p
->bt
.vbackporch
, p
->bt
.il_vfrontporch
,
696 p
->bt
.il_vsync
, p
->bt
.il_vbackporch
,
697 p
->bt
.standards
, p
->bt
.flags
);
700 pr_cont("type=%d\n", p
->type
);
705 static void v4l_print_enum_dv_timings(const void *arg
, bool write_only
)
707 const struct v4l2_enum_dv_timings
*p
= arg
;
709 pr_cont("index=%u, ", p
->index
);
710 v4l_print_dv_timings(&p
->timings
, write_only
);
713 static void v4l_print_dv_timings_cap(const void *arg
, bool write_only
)
715 const struct v4l2_dv_timings_cap
*p
= arg
;
718 case V4L2_DV_BT_656_1120
:
719 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, "
720 "pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
721 p
->bt
.min_width
, p
->bt
.max_width
,
722 p
->bt
.min_height
, p
->bt
.max_height
,
723 p
->bt
.min_pixelclock
, p
->bt
.max_pixelclock
,
724 p
->bt
.standards
, p
->bt
.capabilities
);
727 pr_cont("type=%u\n", p
->type
);
732 static void v4l_print_frmsizeenum(const void *arg
, bool write_only
)
734 const struct v4l2_frmsizeenum
*p
= arg
;
736 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u",
738 (p
->pixel_format
& 0xff),
739 (p
->pixel_format
>> 8) & 0xff,
740 (p
->pixel_format
>> 16) & 0xff,
741 (p
->pixel_format
>> 24) & 0xff,
744 case V4L2_FRMSIZE_TYPE_DISCRETE
:
745 pr_cont(", wxh=%ux%u\n",
746 p
->discrete
.width
, p
->discrete
.height
);
748 case V4L2_FRMSIZE_TYPE_STEPWISE
:
749 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n",
750 p
->stepwise
.min_width
, p
->stepwise
.min_height
,
751 p
->stepwise
.step_width
, p
->stepwise
.step_height
,
752 p
->stepwise
.max_width
, p
->stepwise
.max_height
);
754 case V4L2_FRMSIZE_TYPE_CONTINUOUS
:
762 static void v4l_print_frmivalenum(const void *arg
, bool write_only
)
764 const struct v4l2_frmivalenum
*p
= arg
;
766 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u",
768 (p
->pixel_format
& 0xff),
769 (p
->pixel_format
>> 8) & 0xff,
770 (p
->pixel_format
>> 16) & 0xff,
771 (p
->pixel_format
>> 24) & 0xff,
772 p
->width
, p
->height
, p
->type
);
774 case V4L2_FRMIVAL_TYPE_DISCRETE
:
775 pr_cont(", fps=%d/%d\n",
776 p
->discrete
.numerator
,
777 p
->discrete
.denominator
);
779 case V4L2_FRMIVAL_TYPE_STEPWISE
:
780 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n",
781 p
->stepwise
.min
.numerator
,
782 p
->stepwise
.min
.denominator
,
783 p
->stepwise
.max
.numerator
,
784 p
->stepwise
.max
.denominator
,
785 p
->stepwise
.step
.numerator
,
786 p
->stepwise
.step
.denominator
);
788 case V4L2_FRMIVAL_TYPE_CONTINUOUS
:
796 static void v4l_print_event(const void *arg
, bool write_only
)
798 const struct v4l2_event
*p
= arg
;
799 const struct v4l2_event_ctrl
*c
;
801 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, "
802 "timestamp=%lu.%9.9lu\n",
803 p
->type
, p
->pending
, p
->sequence
, p
->id
,
804 p
->timestamp
.tv_sec
, p
->timestamp
.tv_nsec
);
806 case V4L2_EVENT_VSYNC
:
807 printk(KERN_DEBUG
"field=%s\n",
808 prt_names(p
->u
.vsync
.field
, v4l2_field_names
));
810 case V4L2_EVENT_CTRL
:
812 printk(KERN_DEBUG
"changes=0x%x, type=%u, ",
813 c
->changes
, c
->type
);
814 if (c
->type
== V4L2_CTRL_TYPE_INTEGER64
)
815 pr_cont("value64=%lld, ", c
->value64
);
817 pr_cont("value=%d, ", c
->value
);
818 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, "
819 "default_value=%d\n",
820 c
->flags
, c
->minimum
, c
->maximum
,
821 c
->step
, c
->default_value
);
823 case V4L2_EVENT_FRAME_SYNC
:
824 pr_cont("frame_sequence=%u\n",
825 p
->u
.frame_sync
.frame_sequence
);
830 static void v4l_print_event_subscription(const void *arg
, bool write_only
)
832 const struct v4l2_event_subscription
*p
= arg
;
834 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
835 p
->type
, p
->id
, p
->flags
);
838 static void v4l_print_sliced_vbi_cap(const void *arg
, bool write_only
)
840 const struct v4l2_sliced_vbi_cap
*p
= arg
;
843 pr_cont("type=%s, service_set=0x%08x\n",
844 prt_names(p
->type
, v4l2_type_names
), p
->service_set
);
845 for (i
= 0; i
< 24; i
++)
846 printk(KERN_DEBUG
"line[%02u]=0x%04x, 0x%04x\n", i
,
847 p
->service_lines
[0][i
],
848 p
->service_lines
[1][i
]);
851 static void v4l_print_freq_band(const void *arg
, bool write_only
)
853 const struct v4l2_frequency_band
*p
= arg
;
855 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, "
856 "rangelow=%u, rangehigh=%u, modulation=0x%x\n",
857 p
->tuner
, p
->type
, p
->index
,
858 p
->capability
, p
->rangelow
,
859 p
->rangehigh
, p
->modulation
);
862 static void v4l_print_edid(const void *arg
, bool write_only
)
864 const struct v4l2_edid
*p
= arg
;
866 pr_cont("pad=%u, start_block=%u, blocks=%u\n",
867 p
->pad
, p
->start_block
, p
->blocks
);
870 static void v4l_print_u32(const void *arg
, bool write_only
)
872 pr_cont("value=%u\n", *(const u32
*)arg
);
875 static void v4l_print_newline(const void *arg
, bool write_only
)
880 static void v4l_print_default(const void *arg
, bool write_only
)
882 pr_cont("driver-specific ioctl\n");
885 static int check_ext_ctrls(struct v4l2_ext_controls
*c
, int allow_priv
)
889 /* zero the reserved fields */
890 c
->reserved
[0] = c
->reserved
[1] = 0;
891 for (i
= 0; i
< c
->count
; i
++)
892 c
->controls
[i
].reserved2
[0] = 0;
894 /* V4L2_CID_PRIVATE_BASE cannot be used as control class
895 when using extended controls.
896 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
897 is it allowed for backwards compatibility.
899 if (!allow_priv
&& c
->ctrl_class
== V4L2_CID_PRIVATE_BASE
)
901 /* Check that all controls are from the same control class. */
902 for (i
= 0; i
< c
->count
; i
++) {
903 if (V4L2_CTRL_ID2CLASS(c
->controls
[i
].id
) != c
->ctrl_class
) {
911 static int check_fmt(struct file
*file
, enum v4l2_buf_type type
)
913 struct video_device
*vfd
= video_devdata(file
);
914 const struct v4l2_ioctl_ops
*ops
= vfd
->ioctl_ops
;
915 bool is_vid
= vfd
->vfl_type
== VFL_TYPE_GRABBER
;
916 bool is_vbi
= vfd
->vfl_type
== VFL_TYPE_VBI
;
917 bool is_sdr
= vfd
->vfl_type
== VFL_TYPE_SDR
;
918 bool is_rx
= vfd
->vfl_dir
!= VFL_DIR_TX
;
919 bool is_tx
= vfd
->vfl_dir
!= VFL_DIR_RX
;
925 case V4L2_BUF_TYPE_VIDEO_CAPTURE
:
926 if (is_vid
&& is_rx
&&
927 (ops
->vidioc_g_fmt_vid_cap
|| ops
->vidioc_g_fmt_vid_cap_mplane
))
930 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE
:
931 if (is_vid
&& is_rx
&& ops
->vidioc_g_fmt_vid_cap_mplane
)
934 case V4L2_BUF_TYPE_VIDEO_OVERLAY
:
935 if (is_vid
&& is_rx
&& ops
->vidioc_g_fmt_vid_overlay
)
938 case V4L2_BUF_TYPE_VIDEO_OUTPUT
:
939 if (is_vid
&& is_tx
&&
940 (ops
->vidioc_g_fmt_vid_out
|| ops
->vidioc_g_fmt_vid_out_mplane
))
943 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE
:
944 if (is_vid
&& is_tx
&& ops
->vidioc_g_fmt_vid_out_mplane
)
947 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
:
948 if (is_vid
&& is_tx
&& ops
->vidioc_g_fmt_vid_out_overlay
)
951 case V4L2_BUF_TYPE_VBI_CAPTURE
:
952 if (is_vbi
&& is_rx
&& ops
->vidioc_g_fmt_vbi_cap
)
955 case V4L2_BUF_TYPE_VBI_OUTPUT
:
956 if (is_vbi
&& is_tx
&& ops
->vidioc_g_fmt_vbi_out
)
959 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE
:
960 if (is_vbi
&& is_rx
&& ops
->vidioc_g_fmt_sliced_vbi_cap
)
963 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT
:
964 if (is_vbi
&& is_tx
&& ops
->vidioc_g_fmt_sliced_vbi_out
)
967 case V4L2_BUF_TYPE_SDR_CAPTURE
:
968 if (is_sdr
&& is_rx
&& ops
->vidioc_g_fmt_sdr_cap
)
977 static void v4l_sanitize_format(struct v4l2_format
*fmt
)
982 * The v4l2_pix_format structure has been extended with fields that were
983 * not previously required to be set to zero by applications. The priv
984 * field, when set to a magic value, indicates the the extended fields
985 * are valid. Otherwise they will contain undefined values. To simplify
986 * the API towards drivers zero the extended fields and set the priv
987 * field to the magic value when the extended pixel format structure
988 * isn't used by applications.
991 if (fmt
->type
!= V4L2_BUF_TYPE_VIDEO_CAPTURE
&&
992 fmt
->type
!= V4L2_BUF_TYPE_VIDEO_OUTPUT
)
995 if (fmt
->fmt
.pix
.priv
== V4L2_PIX_FMT_PRIV_MAGIC
)
998 fmt
->fmt
.pix
.priv
= V4L2_PIX_FMT_PRIV_MAGIC
;
1000 offset
= offsetof(struct v4l2_pix_format
, priv
)
1001 + sizeof(fmt
->fmt
.pix
.priv
);
1002 memset(((void *)&fmt
->fmt
.pix
) + offset
, 0,
1003 sizeof(fmt
->fmt
.pix
) - offset
);
1006 static int v4l_querycap(const struct v4l2_ioctl_ops
*ops
,
1007 struct file
*file
, void *fh
, void *arg
)
1009 struct v4l2_capability
*cap
= (struct v4l2_capability
*)arg
;
1012 cap
->version
= LINUX_VERSION_CODE
;
1014 ret
= ops
->vidioc_querycap(file
, fh
, cap
);
1016 cap
->capabilities
|= V4L2_CAP_EXT_PIX_FORMAT
;
1017 cap
->device_caps
|= V4L2_CAP_EXT_PIX_FORMAT
;
1022 static int v4l_s_input(const struct v4l2_ioctl_ops
*ops
,
1023 struct file
*file
, void *fh
, void *arg
)
1025 return ops
->vidioc_s_input(file
, fh
, *(unsigned int *)arg
);
1028 static int v4l_s_output(const struct v4l2_ioctl_ops
*ops
,
1029 struct file
*file
, void *fh
, void *arg
)
1031 return ops
->vidioc_s_output(file
, fh
, *(unsigned int *)arg
);
1034 static int v4l_g_priority(const struct v4l2_ioctl_ops
*ops
,
1035 struct file
*file
, void *fh
, void *arg
)
1037 struct video_device
*vfd
;
1040 if (ops
->vidioc_g_priority
)
1041 return ops
->vidioc_g_priority(file
, fh
, arg
);
1042 vfd
= video_devdata(file
);
1043 *p
= v4l2_prio_max(vfd
->prio
);
1047 static int v4l_s_priority(const struct v4l2_ioctl_ops
*ops
,
1048 struct file
*file
, void *fh
, void *arg
)
1050 struct video_device
*vfd
;
1051 struct v4l2_fh
*vfh
;
1054 if (ops
->vidioc_s_priority
)
1055 return ops
->vidioc_s_priority(file
, fh
, *p
);
1056 vfd
= video_devdata(file
);
1057 vfh
= file
->private_data
;
1058 return v4l2_prio_change(vfd
->prio
, &vfh
->prio
, *p
);
1061 static int v4l_enuminput(const struct v4l2_ioctl_ops
*ops
,
1062 struct file
*file
, void *fh
, void *arg
)
1064 struct video_device
*vfd
= video_devdata(file
);
1065 struct v4l2_input
*p
= arg
;
1068 * We set the flags for CAP_DV_TIMINGS &
1069 * CAP_STD here based on ioctl handler provided by the
1070 * driver. If the driver doesn't support these
1071 * for a specific input, it must override these flags.
1073 if (is_valid_ioctl(vfd
, VIDIOC_S_STD
))
1074 p
->capabilities
|= V4L2_IN_CAP_STD
;
1076 return ops
->vidioc_enum_input(file
, fh
, p
);
1079 static int v4l_enumoutput(const struct v4l2_ioctl_ops
*ops
,
1080 struct file
*file
, void *fh
, void *arg
)
1082 struct video_device
*vfd
= video_devdata(file
);
1083 struct v4l2_output
*p
= arg
;
1086 * We set the flags for CAP_DV_TIMINGS &
1087 * CAP_STD here based on ioctl handler provided by the
1088 * driver. If the driver doesn't support these
1089 * for a specific output, it must override these flags.
1091 if (is_valid_ioctl(vfd
, VIDIOC_S_STD
))
1092 p
->capabilities
|= V4L2_OUT_CAP_STD
;
1094 return ops
->vidioc_enum_output(file
, fh
, p
);
1097 static int v4l_enum_fmt(const struct v4l2_ioctl_ops
*ops
,
1098 struct file
*file
, void *fh
, void *arg
)
1100 struct v4l2_fmtdesc
*p
= arg
;
1101 struct video_device
*vfd
= video_devdata(file
);
1102 bool is_vid
= vfd
->vfl_type
== VFL_TYPE_GRABBER
;
1103 bool is_sdr
= vfd
->vfl_type
== VFL_TYPE_SDR
;
1104 bool is_rx
= vfd
->vfl_dir
!= VFL_DIR_TX
;
1105 bool is_tx
= vfd
->vfl_dir
!= VFL_DIR_RX
;
1108 case V4L2_BUF_TYPE_VIDEO_CAPTURE
:
1109 if (unlikely(!is_rx
|| !is_vid
|| !ops
->vidioc_enum_fmt_vid_cap
))
1111 return ops
->vidioc_enum_fmt_vid_cap(file
, fh
, arg
);
1112 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE
:
1113 if (unlikely(!is_rx
|| !is_vid
|| !ops
->vidioc_enum_fmt_vid_cap_mplane
))
1115 return ops
->vidioc_enum_fmt_vid_cap_mplane(file
, fh
, arg
);
1116 case V4L2_BUF_TYPE_VIDEO_OVERLAY
:
1117 if (unlikely(!is_rx
|| !is_vid
|| !ops
->vidioc_enum_fmt_vid_overlay
))
1119 return ops
->vidioc_enum_fmt_vid_overlay(file
, fh
, arg
);
1120 case V4L2_BUF_TYPE_VIDEO_OUTPUT
:
1121 if (unlikely(!is_tx
|| !is_vid
|| !ops
->vidioc_enum_fmt_vid_out
))
1123 return ops
->vidioc_enum_fmt_vid_out(file
, fh
, arg
);
1124 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE
:
1125 if (unlikely(!is_tx
|| !is_vid
|| !ops
->vidioc_enum_fmt_vid_out_mplane
))
1127 return ops
->vidioc_enum_fmt_vid_out_mplane(file
, fh
, arg
);
1128 case V4L2_BUF_TYPE_SDR_CAPTURE
:
1129 if (unlikely(!is_rx
|| !is_sdr
|| !ops
->vidioc_enum_fmt_sdr_cap
))
1131 return ops
->vidioc_enum_fmt_sdr_cap(file
, fh
, arg
);
1136 static int v4l_g_fmt(const struct v4l2_ioctl_ops
*ops
,
1137 struct file
*file
, void *fh
, void *arg
)
1139 struct v4l2_format
*p
= arg
;
1140 struct video_device
*vfd
= video_devdata(file
);
1141 bool is_vid
= vfd
->vfl_type
== VFL_TYPE_GRABBER
;
1142 bool is_sdr
= vfd
->vfl_type
== VFL_TYPE_SDR
;
1143 bool is_rx
= vfd
->vfl_dir
!= VFL_DIR_TX
;
1144 bool is_tx
= vfd
->vfl_dir
!= VFL_DIR_RX
;
1148 * fmt can't be cleared for these overlay types due to the 'clips'
1149 * 'clipcount' and 'bitmap' pointers in struct v4l2_window.
1150 * Those are provided by the user. So handle these two overlay types
1151 * first, and then just do a simple memset for the other types.
1154 case V4L2_BUF_TYPE_VIDEO_OVERLAY
:
1155 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
: {
1156 struct v4l2_clip __user
*clips
= p
->fmt
.win
.clips
;
1157 u32 clipcount
= p
->fmt
.win
.clipcount
;
1158 void __user
*bitmap
= p
->fmt
.win
.bitmap
;
1160 memset(&p
->fmt
, 0, sizeof(p
->fmt
));
1161 p
->fmt
.win
.clips
= clips
;
1162 p
->fmt
.win
.clipcount
= clipcount
;
1163 p
->fmt
.win
.bitmap
= bitmap
;
1167 memset(&p
->fmt
, 0, sizeof(p
->fmt
));
1172 case V4L2_BUF_TYPE_VIDEO_CAPTURE
:
1173 if (unlikely(!is_rx
|| !is_vid
|| !ops
->vidioc_g_fmt_vid_cap
))
1175 p
->fmt
.pix
.priv
= V4L2_PIX_FMT_PRIV_MAGIC
;
1176 ret
= ops
->vidioc_g_fmt_vid_cap(file
, fh
, arg
);
1177 /* just in case the driver zeroed it again */
1178 p
->fmt
.pix
.priv
= V4L2_PIX_FMT_PRIV_MAGIC
;
1180 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE
:
1181 if (unlikely(!is_rx
|| !is_vid
|| !ops
->vidioc_g_fmt_vid_cap_mplane
))
1183 return ops
->vidioc_g_fmt_vid_cap_mplane(file
, fh
, arg
);
1184 case V4L2_BUF_TYPE_VIDEO_OVERLAY
:
1185 if (unlikely(!is_rx
|| !is_vid
|| !ops
->vidioc_g_fmt_vid_overlay
))
1187 return ops
->vidioc_g_fmt_vid_overlay(file
, fh
, arg
);
1188 case V4L2_BUF_TYPE_VBI_CAPTURE
:
1189 if (unlikely(!is_rx
|| is_vid
|| !ops
->vidioc_g_fmt_vbi_cap
))
1191 return ops
->vidioc_g_fmt_vbi_cap(file
, fh
, arg
);
1192 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE
:
1193 if (unlikely(!is_rx
|| is_vid
|| !ops
->vidioc_g_fmt_sliced_vbi_cap
))
1195 return ops
->vidioc_g_fmt_sliced_vbi_cap(file
, fh
, arg
);
1196 case V4L2_BUF_TYPE_VIDEO_OUTPUT
:
1197 if (unlikely(!is_tx
|| !is_vid
|| !ops
->vidioc_g_fmt_vid_out
))
1199 p
->fmt
.pix
.priv
= V4L2_PIX_FMT_PRIV_MAGIC
;
1200 ret
= ops
->vidioc_g_fmt_vid_out(file
, fh
, arg
);
1201 /* just in case the driver zeroed it again */
1202 p
->fmt
.pix
.priv
= V4L2_PIX_FMT_PRIV_MAGIC
;
1204 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE
:
1205 if (unlikely(!is_tx
|| !is_vid
|| !ops
->vidioc_g_fmt_vid_out_mplane
))
1207 return ops
->vidioc_g_fmt_vid_out_mplane(file
, fh
, arg
);
1208 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
:
1209 if (unlikely(!is_tx
|| !is_vid
|| !ops
->vidioc_g_fmt_vid_out_overlay
))
1211 return ops
->vidioc_g_fmt_vid_out_overlay(file
, fh
, arg
);
1212 case V4L2_BUF_TYPE_VBI_OUTPUT
:
1213 if (unlikely(!is_tx
|| is_vid
|| !ops
->vidioc_g_fmt_vbi_out
))
1215 return ops
->vidioc_g_fmt_vbi_out(file
, fh
, arg
);
1216 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT
:
1217 if (unlikely(!is_tx
|| is_vid
|| !ops
->vidioc_g_fmt_sliced_vbi_out
))
1219 return ops
->vidioc_g_fmt_sliced_vbi_out(file
, fh
, arg
);
1220 case V4L2_BUF_TYPE_SDR_CAPTURE
:
1221 if (unlikely(!is_rx
|| !is_sdr
|| !ops
->vidioc_g_fmt_sdr_cap
))
1223 return ops
->vidioc_g_fmt_sdr_cap(file
, fh
, arg
);
1228 static int v4l_s_fmt(const struct v4l2_ioctl_ops
*ops
,
1229 struct file
*file
, void *fh
, void *arg
)
1231 struct v4l2_format
*p
= arg
;
1232 struct video_device
*vfd
= video_devdata(file
);
1233 bool is_vid
= vfd
->vfl_type
== VFL_TYPE_GRABBER
;
1234 bool is_sdr
= vfd
->vfl_type
== VFL_TYPE_SDR
;
1235 bool is_rx
= vfd
->vfl_dir
!= VFL_DIR_TX
;
1236 bool is_tx
= vfd
->vfl_dir
!= VFL_DIR_RX
;
1239 v4l_sanitize_format(p
);
1242 case V4L2_BUF_TYPE_VIDEO_CAPTURE
:
1243 if (unlikely(!is_rx
|| !is_vid
|| !ops
->vidioc_s_fmt_vid_cap
))
1245 CLEAR_AFTER_FIELD(p
, fmt
.pix
);
1246 ret
= ops
->vidioc_s_fmt_vid_cap(file
, fh
, arg
);
1247 /* just in case the driver zeroed it again */
1248 p
->fmt
.pix
.priv
= V4L2_PIX_FMT_PRIV_MAGIC
;
1250 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE
:
1251 if (unlikely(!is_rx
|| !is_vid
|| !ops
->vidioc_s_fmt_vid_cap_mplane
))
1253 CLEAR_AFTER_FIELD(p
, fmt
.pix_mp
);
1254 return ops
->vidioc_s_fmt_vid_cap_mplane(file
, fh
, arg
);
1255 case V4L2_BUF_TYPE_VIDEO_OVERLAY
:
1256 if (unlikely(!is_rx
|| !is_vid
|| !ops
->vidioc_s_fmt_vid_overlay
))
1258 CLEAR_AFTER_FIELD(p
, fmt
.win
);
1259 return ops
->vidioc_s_fmt_vid_overlay(file
, fh
, arg
);
1260 case V4L2_BUF_TYPE_VBI_CAPTURE
:
1261 if (unlikely(!is_rx
|| is_vid
|| !ops
->vidioc_s_fmt_vbi_cap
))
1263 CLEAR_AFTER_FIELD(p
, fmt
.vbi
);
1264 return ops
->vidioc_s_fmt_vbi_cap(file
, fh
, arg
);
1265 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE
:
1266 if (unlikely(!is_rx
|| is_vid
|| !ops
->vidioc_s_fmt_sliced_vbi_cap
))
1268 CLEAR_AFTER_FIELD(p
, fmt
.sliced
);
1269 return ops
->vidioc_s_fmt_sliced_vbi_cap(file
, fh
, arg
);
1270 case V4L2_BUF_TYPE_VIDEO_OUTPUT
:
1271 if (unlikely(!is_tx
|| !is_vid
|| !ops
->vidioc_s_fmt_vid_out
))
1273 CLEAR_AFTER_FIELD(p
, fmt
.pix
);
1274 ret
= ops
->vidioc_s_fmt_vid_out(file
, fh
, arg
);
1275 /* just in case the driver zeroed it again */
1276 p
->fmt
.pix
.priv
= V4L2_PIX_FMT_PRIV_MAGIC
;
1278 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE
:
1279 if (unlikely(!is_tx
|| !is_vid
|| !ops
->vidioc_s_fmt_vid_out_mplane
))
1281 CLEAR_AFTER_FIELD(p
, fmt
.pix_mp
);
1282 return ops
->vidioc_s_fmt_vid_out_mplane(file
, fh
, arg
);
1283 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
:
1284 if (unlikely(!is_tx
|| !is_vid
|| !ops
->vidioc_s_fmt_vid_out_overlay
))
1286 CLEAR_AFTER_FIELD(p
, fmt
.win
);
1287 return ops
->vidioc_s_fmt_vid_out_overlay(file
, fh
, arg
);
1288 case V4L2_BUF_TYPE_VBI_OUTPUT
:
1289 if (unlikely(!is_tx
|| is_vid
|| !ops
->vidioc_s_fmt_vbi_out
))
1291 CLEAR_AFTER_FIELD(p
, fmt
.vbi
);
1292 return ops
->vidioc_s_fmt_vbi_out(file
, fh
, arg
);
1293 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT
:
1294 if (unlikely(!is_tx
|| is_vid
|| !ops
->vidioc_s_fmt_sliced_vbi_out
))
1296 CLEAR_AFTER_FIELD(p
, fmt
.sliced
);
1297 return ops
->vidioc_s_fmt_sliced_vbi_out(file
, fh
, arg
);
1298 case V4L2_BUF_TYPE_SDR_CAPTURE
:
1299 if (unlikely(!is_rx
|| !is_sdr
|| !ops
->vidioc_s_fmt_sdr_cap
))
1301 CLEAR_AFTER_FIELD(p
, fmt
.sdr
);
1302 return ops
->vidioc_s_fmt_sdr_cap(file
, fh
, arg
);
1307 static int v4l_try_fmt(const struct v4l2_ioctl_ops
*ops
,
1308 struct file
*file
, void *fh
, void *arg
)
1310 struct v4l2_format
*p
= arg
;
1311 struct video_device
*vfd
= video_devdata(file
);
1312 bool is_vid
= vfd
->vfl_type
== VFL_TYPE_GRABBER
;
1313 bool is_sdr
= vfd
->vfl_type
== VFL_TYPE_SDR
;
1314 bool is_rx
= vfd
->vfl_dir
!= VFL_DIR_TX
;
1315 bool is_tx
= vfd
->vfl_dir
!= VFL_DIR_RX
;
1318 v4l_sanitize_format(p
);
1321 case V4L2_BUF_TYPE_VIDEO_CAPTURE
:
1322 if (unlikely(!is_rx
|| !is_vid
|| !ops
->vidioc_try_fmt_vid_cap
))
1324 CLEAR_AFTER_FIELD(p
, fmt
.pix
);
1325 ret
= ops
->vidioc_try_fmt_vid_cap(file
, fh
, arg
);
1326 /* just in case the driver zeroed it again */
1327 p
->fmt
.pix
.priv
= V4L2_PIX_FMT_PRIV_MAGIC
;
1329 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE
:
1330 if (unlikely(!is_rx
|| !is_vid
|| !ops
->vidioc_try_fmt_vid_cap_mplane
))
1332 CLEAR_AFTER_FIELD(p
, fmt
.pix_mp
);
1333 return ops
->vidioc_try_fmt_vid_cap_mplane(file
, fh
, arg
);
1334 case V4L2_BUF_TYPE_VIDEO_OVERLAY
:
1335 if (unlikely(!is_rx
|| !is_vid
|| !ops
->vidioc_try_fmt_vid_overlay
))
1337 CLEAR_AFTER_FIELD(p
, fmt
.win
);
1338 return ops
->vidioc_try_fmt_vid_overlay(file
, fh
, arg
);
1339 case V4L2_BUF_TYPE_VBI_CAPTURE
:
1340 if (unlikely(!is_rx
|| is_vid
|| !ops
->vidioc_try_fmt_vbi_cap
))
1342 CLEAR_AFTER_FIELD(p
, fmt
.vbi
);
1343 return ops
->vidioc_try_fmt_vbi_cap(file
, fh
, arg
);
1344 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE
:
1345 if (unlikely(!is_rx
|| is_vid
|| !ops
->vidioc_try_fmt_sliced_vbi_cap
))
1347 CLEAR_AFTER_FIELD(p
, fmt
.sliced
);
1348 return ops
->vidioc_try_fmt_sliced_vbi_cap(file
, fh
, arg
);
1349 case V4L2_BUF_TYPE_VIDEO_OUTPUT
:
1350 if (unlikely(!is_tx
|| !is_vid
|| !ops
->vidioc_try_fmt_vid_out
))
1352 CLEAR_AFTER_FIELD(p
, fmt
.pix
);
1353 ret
= ops
->vidioc_try_fmt_vid_out(file
, fh
, arg
);
1354 /* just in case the driver zeroed it again */
1355 p
->fmt
.pix
.priv
= V4L2_PIX_FMT_PRIV_MAGIC
;
1357 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE
:
1358 if (unlikely(!is_tx
|| !is_vid
|| !ops
->vidioc_try_fmt_vid_out_mplane
))
1360 CLEAR_AFTER_FIELD(p
, fmt
.pix_mp
);
1361 return ops
->vidioc_try_fmt_vid_out_mplane(file
, fh
, arg
);
1362 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
:
1363 if (unlikely(!is_tx
|| !is_vid
|| !ops
->vidioc_try_fmt_vid_out_overlay
))
1365 CLEAR_AFTER_FIELD(p
, fmt
.win
);
1366 return ops
->vidioc_try_fmt_vid_out_overlay(file
, fh
, arg
);
1367 case V4L2_BUF_TYPE_VBI_OUTPUT
:
1368 if (unlikely(!is_tx
|| is_vid
|| !ops
->vidioc_try_fmt_vbi_out
))
1370 CLEAR_AFTER_FIELD(p
, fmt
.vbi
);
1371 return ops
->vidioc_try_fmt_vbi_out(file
, fh
, arg
);
1372 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT
:
1373 if (unlikely(!is_tx
|| is_vid
|| !ops
->vidioc_try_fmt_sliced_vbi_out
))
1375 CLEAR_AFTER_FIELD(p
, fmt
.sliced
);
1376 return ops
->vidioc_try_fmt_sliced_vbi_out(file
, fh
, arg
);
1377 case V4L2_BUF_TYPE_SDR_CAPTURE
:
1378 if (unlikely(!is_rx
|| !is_sdr
|| !ops
->vidioc_try_fmt_sdr_cap
))
1380 CLEAR_AFTER_FIELD(p
, fmt
.sdr
);
1381 return ops
->vidioc_try_fmt_sdr_cap(file
, fh
, arg
);
1386 static int v4l_streamon(const struct v4l2_ioctl_ops
*ops
,
1387 struct file
*file
, void *fh
, void *arg
)
1389 return ops
->vidioc_streamon(file
, fh
, *(unsigned int *)arg
);
1392 static int v4l_streamoff(const struct v4l2_ioctl_ops
*ops
,
1393 struct file
*file
, void *fh
, void *arg
)
1395 return ops
->vidioc_streamoff(file
, fh
, *(unsigned int *)arg
);
1398 static int v4l_g_tuner(const struct v4l2_ioctl_ops
*ops
,
1399 struct file
*file
, void *fh
, void *arg
)
1401 struct video_device
*vfd
= video_devdata(file
);
1402 struct v4l2_tuner
*p
= arg
;
1405 p
->type
= (vfd
->vfl_type
== VFL_TYPE_RADIO
) ?
1406 V4L2_TUNER_RADIO
: V4L2_TUNER_ANALOG_TV
;
1407 err
= ops
->vidioc_g_tuner(file
, fh
, p
);
1409 p
->capability
|= V4L2_TUNER_CAP_FREQ_BANDS
;
1413 static int v4l_s_tuner(const struct v4l2_ioctl_ops
*ops
,
1414 struct file
*file
, void *fh
, void *arg
)
1416 struct video_device
*vfd
= video_devdata(file
);
1417 struct v4l2_tuner
*p
= arg
;
1419 p
->type
= (vfd
->vfl_type
== VFL_TYPE_RADIO
) ?
1420 V4L2_TUNER_RADIO
: V4L2_TUNER_ANALOG_TV
;
1421 return ops
->vidioc_s_tuner(file
, fh
, p
);
1424 static int v4l_g_modulator(const struct v4l2_ioctl_ops
*ops
,
1425 struct file
*file
, void *fh
, void *arg
)
1427 struct v4l2_modulator
*p
= arg
;
1430 err
= ops
->vidioc_g_modulator(file
, fh
, p
);
1432 p
->capability
|= V4L2_TUNER_CAP_FREQ_BANDS
;
1436 static int v4l_g_frequency(const struct v4l2_ioctl_ops
*ops
,
1437 struct file
*file
, void *fh
, void *arg
)
1439 struct video_device
*vfd
= video_devdata(file
);
1440 struct v4l2_frequency
*p
= arg
;
1442 if (vfd
->vfl_type
== VFL_TYPE_SDR
)
1443 p
->type
= V4L2_TUNER_ADC
;
1445 p
->type
= (vfd
->vfl_type
== VFL_TYPE_RADIO
) ?
1446 V4L2_TUNER_RADIO
: V4L2_TUNER_ANALOG_TV
;
1447 return ops
->vidioc_g_frequency(file
, fh
, p
);
1450 static int v4l_s_frequency(const struct v4l2_ioctl_ops
*ops
,
1451 struct file
*file
, void *fh
, void *arg
)
1453 struct video_device
*vfd
= video_devdata(file
);
1454 const struct v4l2_frequency
*p
= arg
;
1455 enum v4l2_tuner_type type
;
1457 if (vfd
->vfl_type
== VFL_TYPE_SDR
) {
1458 if (p
->type
!= V4L2_TUNER_ADC
&& p
->type
!= V4L2_TUNER_RF
)
1461 type
= (vfd
->vfl_type
== VFL_TYPE_RADIO
) ?
1462 V4L2_TUNER_RADIO
: V4L2_TUNER_ANALOG_TV
;
1463 if (type
!= p
->type
)
1466 return ops
->vidioc_s_frequency(file
, fh
, p
);
1469 static int v4l_enumstd(const struct v4l2_ioctl_ops
*ops
,
1470 struct file
*file
, void *fh
, void *arg
)
1472 struct video_device
*vfd
= video_devdata(file
);
1473 struct v4l2_standard
*p
= arg
;
1474 v4l2_std_id id
= vfd
->tvnorms
, curr_id
= 0;
1475 unsigned int index
= p
->index
, i
, j
= 0;
1476 const char *descr
= "";
1478 /* Return -ENODATA if the tvnorms for the current input
1479 or output is 0, meaning that it doesn't support this API. */
1483 /* Return norm array in a canonical way */
1484 for (i
= 0; i
<= index
&& id
; i
++) {
1485 /* last std value in the standards array is 0, so this
1486 while always ends there since (id & 0) == 0. */
1487 while ((id
& standards
[j
].std
) != standards
[j
].std
)
1489 curr_id
= standards
[j
].std
;
1490 descr
= standards
[j
].descr
;
1494 if (curr_id
!= V4L2_STD_PAL
&&
1495 curr_id
!= V4L2_STD_SECAM
&&
1496 curr_id
!= V4L2_STD_NTSC
)
1502 v4l2_video_std_construct(p
, curr_id
, descr
);
1506 static int v4l_s_std(const struct v4l2_ioctl_ops
*ops
,
1507 struct file
*file
, void *fh
, void *arg
)
1509 struct video_device
*vfd
= video_devdata(file
);
1510 v4l2_std_id id
= *(v4l2_std_id
*)arg
, norm
;
1512 norm
= id
& vfd
->tvnorms
;
1513 if (vfd
->tvnorms
&& !norm
) /* Check if std is supported */
1516 /* Calls the specific handler */
1517 return ops
->vidioc_s_std(file
, fh
, norm
);
1520 static int v4l_querystd(const struct v4l2_ioctl_ops
*ops
,
1521 struct file
*file
, void *fh
, void *arg
)
1523 struct video_device
*vfd
= video_devdata(file
);
1524 v4l2_std_id
*p
= arg
;
1527 * If no signal is detected, then the driver should return
1528 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with
1529 * any standards that do not apply removed.
1531 * This means that tuners, audio and video decoders can join
1532 * their efforts to improve the standards detection.
1535 return ops
->vidioc_querystd(file
, fh
, arg
);
1538 static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops
*ops
,
1539 struct file
*file
, void *fh
, void *arg
)
1541 struct video_device
*vfd
= video_devdata(file
);
1542 struct v4l2_hw_freq_seek
*p
= arg
;
1543 enum v4l2_tuner_type type
;
1545 /* s_hw_freq_seek is not supported for SDR for now */
1546 if (vfd
->vfl_type
== VFL_TYPE_SDR
)
1549 type
= (vfd
->vfl_type
== VFL_TYPE_RADIO
) ?
1550 V4L2_TUNER_RADIO
: V4L2_TUNER_ANALOG_TV
;
1551 if (p
->type
!= type
)
1553 return ops
->vidioc_s_hw_freq_seek(file
, fh
, p
);
1556 static int v4l_overlay(const struct v4l2_ioctl_ops
*ops
,
1557 struct file
*file
, void *fh
, void *arg
)
1559 return ops
->vidioc_overlay(file
, fh
, *(unsigned int *)arg
);
1562 static int v4l_reqbufs(const struct v4l2_ioctl_ops
*ops
,
1563 struct file
*file
, void *fh
, void *arg
)
1565 struct v4l2_requestbuffers
*p
= arg
;
1566 int ret
= check_fmt(file
, p
->type
);
1571 CLEAR_AFTER_FIELD(p
, memory
);
1573 return ops
->vidioc_reqbufs(file
, fh
, p
);
1576 static int v4l_querybuf(const struct v4l2_ioctl_ops
*ops
,
1577 struct file
*file
, void *fh
, void *arg
)
1579 struct v4l2_buffer
*p
= arg
;
1580 int ret
= check_fmt(file
, p
->type
);
1582 return ret
? ret
: ops
->vidioc_querybuf(file
, fh
, p
);
1585 static int v4l_qbuf(const struct v4l2_ioctl_ops
*ops
,
1586 struct file
*file
, void *fh
, void *arg
)
1588 struct v4l2_buffer
*p
= arg
;
1589 int ret
= check_fmt(file
, p
->type
);
1591 return ret
? ret
: ops
->vidioc_qbuf(file
, fh
, p
);
1594 static int v4l_dqbuf(const struct v4l2_ioctl_ops
*ops
,
1595 struct file
*file
, void *fh
, void *arg
)
1597 struct v4l2_buffer
*p
= arg
;
1598 int ret
= check_fmt(file
, p
->type
);
1600 return ret
? ret
: ops
->vidioc_dqbuf(file
, fh
, p
);
1603 static int v4l_create_bufs(const struct v4l2_ioctl_ops
*ops
,
1604 struct file
*file
, void *fh
, void *arg
)
1606 struct v4l2_create_buffers
*create
= arg
;
1607 int ret
= check_fmt(file
, create
->format
.type
);
1612 v4l_sanitize_format(&create
->format
);
1614 ret
= ops
->vidioc_create_bufs(file
, fh
, create
);
1616 if (create
->format
.type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
||
1617 create
->format
.type
== V4L2_BUF_TYPE_VIDEO_OUTPUT
)
1618 create
->format
.fmt
.pix
.priv
= V4L2_PIX_FMT_PRIV_MAGIC
;
1623 static int v4l_prepare_buf(const struct v4l2_ioctl_ops
*ops
,
1624 struct file
*file
, void *fh
, void *arg
)
1626 struct v4l2_buffer
*b
= arg
;
1627 int ret
= check_fmt(file
, b
->type
);
1629 return ret
? ret
: ops
->vidioc_prepare_buf(file
, fh
, b
);
1632 static int v4l_g_parm(const struct v4l2_ioctl_ops
*ops
,
1633 struct file
*file
, void *fh
, void *arg
)
1635 struct v4l2_streamparm
*p
= arg
;
1637 int ret
= check_fmt(file
, p
->type
);
1641 if (ops
->vidioc_g_parm
)
1642 return ops
->vidioc_g_parm(file
, fh
, p
);
1643 if (p
->type
!= V4L2_BUF_TYPE_VIDEO_CAPTURE
&&
1644 p
->type
!= V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE
)
1646 p
->parm
.capture
.readbuffers
= 2;
1647 ret
= ops
->vidioc_g_std(file
, fh
, &std
);
1649 v4l2_video_std_frame_period(std
, &p
->parm
.capture
.timeperframe
);
1653 static int v4l_s_parm(const struct v4l2_ioctl_ops
*ops
,
1654 struct file
*file
, void *fh
, void *arg
)
1656 struct v4l2_streamparm
*p
= arg
;
1657 int ret
= check_fmt(file
, p
->type
);
1659 return ret
? ret
: ops
->vidioc_s_parm(file
, fh
, p
);
1662 static int v4l_queryctrl(const struct v4l2_ioctl_ops
*ops
,
1663 struct file
*file
, void *fh
, void *arg
)
1665 struct video_device
*vfd
= video_devdata(file
);
1666 struct v4l2_queryctrl
*p
= arg
;
1667 struct v4l2_fh
*vfh
=
1668 test_bit(V4L2_FL_USES_V4L2_FH
, &vfd
->flags
) ? fh
: NULL
;
1670 if (vfh
&& vfh
->ctrl_handler
)
1671 return v4l2_queryctrl(vfh
->ctrl_handler
, p
);
1672 if (vfd
->ctrl_handler
)
1673 return v4l2_queryctrl(vfd
->ctrl_handler
, p
);
1674 if (ops
->vidioc_queryctrl
)
1675 return ops
->vidioc_queryctrl(file
, fh
, p
);
1679 static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops
*ops
,
1680 struct file
*file
, void *fh
, void *arg
)
1682 struct video_device
*vfd
= video_devdata(file
);
1683 struct v4l2_query_ext_ctrl
*p
= arg
;
1684 struct v4l2_fh
*vfh
=
1685 test_bit(V4L2_FL_USES_V4L2_FH
, &vfd
->flags
) ? fh
: NULL
;
1687 if (vfh
&& vfh
->ctrl_handler
)
1688 return v4l2_query_ext_ctrl(vfh
->ctrl_handler
, p
);
1689 if (vfd
->ctrl_handler
)
1690 return v4l2_query_ext_ctrl(vfd
->ctrl_handler
, p
);
1691 if (ops
->vidioc_query_ext_ctrl
)
1692 return ops
->vidioc_query_ext_ctrl(file
, fh
, p
);
1696 static int v4l_querymenu(const struct v4l2_ioctl_ops
*ops
,
1697 struct file
*file
, void *fh
, void *arg
)
1699 struct video_device
*vfd
= video_devdata(file
);
1700 struct v4l2_querymenu
*p
= arg
;
1701 struct v4l2_fh
*vfh
=
1702 test_bit(V4L2_FL_USES_V4L2_FH
, &vfd
->flags
) ? fh
: NULL
;
1704 if (vfh
&& vfh
->ctrl_handler
)
1705 return v4l2_querymenu(vfh
->ctrl_handler
, p
);
1706 if (vfd
->ctrl_handler
)
1707 return v4l2_querymenu(vfd
->ctrl_handler
, p
);
1708 if (ops
->vidioc_querymenu
)
1709 return ops
->vidioc_querymenu(file
, fh
, p
);
1713 static int v4l_g_ctrl(const struct v4l2_ioctl_ops
*ops
,
1714 struct file
*file
, void *fh
, void *arg
)
1716 struct video_device
*vfd
= video_devdata(file
);
1717 struct v4l2_control
*p
= arg
;
1718 struct v4l2_fh
*vfh
=
1719 test_bit(V4L2_FL_USES_V4L2_FH
, &vfd
->flags
) ? fh
: NULL
;
1720 struct v4l2_ext_controls ctrls
;
1721 struct v4l2_ext_control ctrl
;
1723 if (vfh
&& vfh
->ctrl_handler
)
1724 return v4l2_g_ctrl(vfh
->ctrl_handler
, p
);
1725 if (vfd
->ctrl_handler
)
1726 return v4l2_g_ctrl(vfd
->ctrl_handler
, p
);
1727 if (ops
->vidioc_g_ctrl
)
1728 return ops
->vidioc_g_ctrl(file
, fh
, p
);
1729 if (ops
->vidioc_g_ext_ctrls
== NULL
)
1732 ctrls
.ctrl_class
= V4L2_CTRL_ID2CLASS(p
->id
);
1734 ctrls
.controls
= &ctrl
;
1736 ctrl
.value
= p
->value
;
1737 if (check_ext_ctrls(&ctrls
, 1)) {
1738 int ret
= ops
->vidioc_g_ext_ctrls(file
, fh
, &ctrls
);
1741 p
->value
= ctrl
.value
;
1747 static int v4l_s_ctrl(const struct v4l2_ioctl_ops
*ops
,
1748 struct file
*file
, void *fh
, void *arg
)
1750 struct video_device
*vfd
= video_devdata(file
);
1751 struct v4l2_control
*p
= arg
;
1752 struct v4l2_fh
*vfh
=
1753 test_bit(V4L2_FL_USES_V4L2_FH
, &vfd
->flags
) ? fh
: NULL
;
1754 struct v4l2_ext_controls ctrls
;
1755 struct v4l2_ext_control ctrl
;
1757 if (vfh
&& vfh
->ctrl_handler
)
1758 return v4l2_s_ctrl(vfh
, vfh
->ctrl_handler
, p
);
1759 if (vfd
->ctrl_handler
)
1760 return v4l2_s_ctrl(NULL
, vfd
->ctrl_handler
, p
);
1761 if (ops
->vidioc_s_ctrl
)
1762 return ops
->vidioc_s_ctrl(file
, fh
, p
);
1763 if (ops
->vidioc_s_ext_ctrls
== NULL
)
1766 ctrls
.ctrl_class
= V4L2_CTRL_ID2CLASS(p
->id
);
1768 ctrls
.controls
= &ctrl
;
1770 ctrl
.value
= p
->value
;
1771 if (check_ext_ctrls(&ctrls
, 1))
1772 return ops
->vidioc_s_ext_ctrls(file
, fh
, &ctrls
);
1776 static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops
*ops
,
1777 struct file
*file
, void *fh
, void *arg
)
1779 struct video_device
*vfd
= video_devdata(file
);
1780 struct v4l2_ext_controls
*p
= arg
;
1781 struct v4l2_fh
*vfh
=
1782 test_bit(V4L2_FL_USES_V4L2_FH
, &vfd
->flags
) ? fh
: NULL
;
1784 p
->error_idx
= p
->count
;
1785 if (vfh
&& vfh
->ctrl_handler
)
1786 return v4l2_g_ext_ctrls(vfh
->ctrl_handler
, p
);
1787 if (vfd
->ctrl_handler
)
1788 return v4l2_g_ext_ctrls(vfd
->ctrl_handler
, p
);
1789 if (ops
->vidioc_g_ext_ctrls
== NULL
)
1791 return check_ext_ctrls(p
, 0) ? ops
->vidioc_g_ext_ctrls(file
, fh
, p
) :
1795 static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops
*ops
,
1796 struct file
*file
, void *fh
, void *arg
)
1798 struct video_device
*vfd
= video_devdata(file
);
1799 struct v4l2_ext_controls
*p
= arg
;
1800 struct v4l2_fh
*vfh
=
1801 test_bit(V4L2_FL_USES_V4L2_FH
, &vfd
->flags
) ? fh
: NULL
;
1803 p
->error_idx
= p
->count
;
1804 if (vfh
&& vfh
->ctrl_handler
)
1805 return v4l2_s_ext_ctrls(vfh
, vfh
->ctrl_handler
, p
);
1806 if (vfd
->ctrl_handler
)
1807 return v4l2_s_ext_ctrls(NULL
, vfd
->ctrl_handler
, p
);
1808 if (ops
->vidioc_s_ext_ctrls
== NULL
)
1810 return check_ext_ctrls(p
, 0) ? ops
->vidioc_s_ext_ctrls(file
, fh
, p
) :
1814 static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops
*ops
,
1815 struct file
*file
, void *fh
, void *arg
)
1817 struct video_device
*vfd
= video_devdata(file
);
1818 struct v4l2_ext_controls
*p
= arg
;
1819 struct v4l2_fh
*vfh
=
1820 test_bit(V4L2_FL_USES_V4L2_FH
, &vfd
->flags
) ? fh
: NULL
;
1822 p
->error_idx
= p
->count
;
1823 if (vfh
&& vfh
->ctrl_handler
)
1824 return v4l2_try_ext_ctrls(vfh
->ctrl_handler
, p
);
1825 if (vfd
->ctrl_handler
)
1826 return v4l2_try_ext_ctrls(vfd
->ctrl_handler
, p
);
1827 if (ops
->vidioc_try_ext_ctrls
== NULL
)
1829 return check_ext_ctrls(p
, 0) ? ops
->vidioc_try_ext_ctrls(file
, fh
, p
) :
1833 static int v4l_g_crop(const struct v4l2_ioctl_ops
*ops
,
1834 struct file
*file
, void *fh
, void *arg
)
1836 struct v4l2_crop
*p
= arg
;
1837 struct v4l2_selection s
= {
1842 if (ops
->vidioc_g_crop
)
1843 return ops
->vidioc_g_crop(file
, fh
, p
);
1844 /* simulate capture crop using selection api */
1846 /* crop means compose for output devices */
1847 if (V4L2_TYPE_IS_OUTPUT(p
->type
))
1848 s
.target
= V4L2_SEL_TGT_COMPOSE_ACTIVE
;
1850 s
.target
= V4L2_SEL_TGT_CROP_ACTIVE
;
1852 ret
= ops
->vidioc_g_selection(file
, fh
, &s
);
1854 /* copying results to old structure on success */
1860 static int v4l_s_crop(const struct v4l2_ioctl_ops
*ops
,
1861 struct file
*file
, void *fh
, void *arg
)
1863 struct v4l2_crop
*p
= arg
;
1864 struct v4l2_selection s
= {
1869 if (ops
->vidioc_s_crop
)
1870 return ops
->vidioc_s_crop(file
, fh
, p
);
1871 /* simulate capture crop using selection api */
1873 /* crop means compose for output devices */
1874 if (V4L2_TYPE_IS_OUTPUT(p
->type
))
1875 s
.target
= V4L2_SEL_TGT_COMPOSE_ACTIVE
;
1877 s
.target
= V4L2_SEL_TGT_CROP_ACTIVE
;
1879 return ops
->vidioc_s_selection(file
, fh
, &s
);
1882 static int v4l_cropcap(const struct v4l2_ioctl_ops
*ops
,
1883 struct file
*file
, void *fh
, void *arg
)
1885 struct v4l2_cropcap
*p
= arg
;
1887 if (ops
->vidioc_g_selection
) {
1888 struct v4l2_selection s
= { .type
= p
->type
};
1891 /* obtaining bounds */
1892 if (V4L2_TYPE_IS_OUTPUT(p
->type
))
1893 s
.target
= V4L2_SEL_TGT_COMPOSE_BOUNDS
;
1895 s
.target
= V4L2_SEL_TGT_CROP_BOUNDS
;
1897 ret
= ops
->vidioc_g_selection(file
, fh
, &s
);
1902 /* obtaining defrect */
1903 if (V4L2_TYPE_IS_OUTPUT(p
->type
))
1904 s
.target
= V4L2_SEL_TGT_COMPOSE_DEFAULT
;
1906 s
.target
= V4L2_SEL_TGT_CROP_DEFAULT
;
1908 ret
= ops
->vidioc_g_selection(file
, fh
, &s
);
1914 /* setting trivial pixelaspect */
1915 p
->pixelaspect
.numerator
= 1;
1916 p
->pixelaspect
.denominator
= 1;
1918 if (ops
->vidioc_cropcap
)
1919 return ops
->vidioc_cropcap(file
, fh
, p
);
1924 static int v4l_log_status(const struct v4l2_ioctl_ops
*ops
,
1925 struct file
*file
, void *fh
, void *arg
)
1927 struct video_device
*vfd
= video_devdata(file
);
1931 pr_info("%s: ================= START STATUS =================\n",
1932 vfd
->v4l2_dev
->name
);
1933 ret
= ops
->vidioc_log_status(file
, fh
);
1935 pr_info("%s: ================== END STATUS ==================\n",
1936 vfd
->v4l2_dev
->name
);
1940 static int v4l_dbg_g_register(const struct v4l2_ioctl_ops
*ops
,
1941 struct file
*file
, void *fh
, void *arg
)
1943 #ifdef CONFIG_VIDEO_ADV_DEBUG
1944 struct v4l2_dbg_register
*p
= arg
;
1945 struct video_device
*vfd
= video_devdata(file
);
1946 struct v4l2_subdev
*sd
;
1949 if (!capable(CAP_SYS_ADMIN
))
1951 if (p
->match
.type
== V4L2_CHIP_MATCH_SUBDEV
) {
1952 if (vfd
->v4l2_dev
== NULL
)
1954 v4l2_device_for_each_subdev(sd
, vfd
->v4l2_dev
)
1955 if (p
->match
.addr
== idx
++)
1956 return v4l2_subdev_call(sd
, core
, g_register
, p
);
1959 if (ops
->vidioc_g_register
&& p
->match
.type
== V4L2_CHIP_MATCH_BRIDGE
&&
1960 (ops
->vidioc_g_chip_info
|| p
->match
.addr
== 0))
1961 return ops
->vidioc_g_register(file
, fh
, p
);
1968 static int v4l_dbg_s_register(const struct v4l2_ioctl_ops
*ops
,
1969 struct file
*file
, void *fh
, void *arg
)
1971 #ifdef CONFIG_VIDEO_ADV_DEBUG
1972 const struct v4l2_dbg_register
*p
= arg
;
1973 struct video_device
*vfd
= video_devdata(file
);
1974 struct v4l2_subdev
*sd
;
1977 if (!capable(CAP_SYS_ADMIN
))
1979 if (p
->match
.type
== V4L2_CHIP_MATCH_SUBDEV
) {
1980 if (vfd
->v4l2_dev
== NULL
)
1982 v4l2_device_for_each_subdev(sd
, vfd
->v4l2_dev
)
1983 if (p
->match
.addr
== idx
++)
1984 return v4l2_subdev_call(sd
, core
, s_register
, p
);
1987 if (ops
->vidioc_s_register
&& p
->match
.type
== V4L2_CHIP_MATCH_BRIDGE
&&
1988 (ops
->vidioc_g_chip_info
|| p
->match
.addr
== 0))
1989 return ops
->vidioc_s_register(file
, fh
, p
);
1996 static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops
*ops
,
1997 struct file
*file
, void *fh
, void *arg
)
1999 #ifdef CONFIG_VIDEO_ADV_DEBUG
2000 struct video_device
*vfd
= video_devdata(file
);
2001 struct v4l2_dbg_chip_info
*p
= arg
;
2002 struct v4l2_subdev
*sd
;
2005 switch (p
->match
.type
) {
2006 case V4L2_CHIP_MATCH_BRIDGE
:
2007 if (ops
->vidioc_s_register
)
2008 p
->flags
|= V4L2_CHIP_FL_WRITABLE
;
2009 if (ops
->vidioc_g_register
)
2010 p
->flags
|= V4L2_CHIP_FL_READABLE
;
2011 strlcpy(p
->name
, vfd
->v4l2_dev
->name
, sizeof(p
->name
));
2012 if (ops
->vidioc_g_chip_info
)
2013 return ops
->vidioc_g_chip_info(file
, fh
, arg
);
2018 case V4L2_CHIP_MATCH_SUBDEV
:
2019 if (vfd
->v4l2_dev
== NULL
)
2021 v4l2_device_for_each_subdev(sd
, vfd
->v4l2_dev
) {
2022 if (p
->match
.addr
!= idx
++)
2024 if (sd
->ops
->core
&& sd
->ops
->core
->s_register
)
2025 p
->flags
|= V4L2_CHIP_FL_WRITABLE
;
2026 if (sd
->ops
->core
&& sd
->ops
->core
->g_register
)
2027 p
->flags
|= V4L2_CHIP_FL_READABLE
;
2028 strlcpy(p
->name
, sd
->name
, sizeof(p
->name
));
2039 static int v4l_dqevent(const struct v4l2_ioctl_ops
*ops
,
2040 struct file
*file
, void *fh
, void *arg
)
2042 return v4l2_event_dequeue(fh
, arg
, file
->f_flags
& O_NONBLOCK
);
2045 static int v4l_subscribe_event(const struct v4l2_ioctl_ops
*ops
,
2046 struct file
*file
, void *fh
, void *arg
)
2048 return ops
->vidioc_subscribe_event(fh
, arg
);
2051 static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops
*ops
,
2052 struct file
*file
, void *fh
, void *arg
)
2054 return ops
->vidioc_unsubscribe_event(fh
, arg
);
2057 static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops
*ops
,
2058 struct file
*file
, void *fh
, void *arg
)
2060 struct v4l2_sliced_vbi_cap
*p
= arg
;
2061 int ret
= check_fmt(file
, p
->type
);
2066 /* Clear up to type, everything after type is zeroed already */
2067 memset(p
, 0, offsetof(struct v4l2_sliced_vbi_cap
, type
));
2069 return ops
->vidioc_g_sliced_vbi_cap(file
, fh
, p
);
2072 static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops
*ops
,
2073 struct file
*file
, void *fh
, void *arg
)
2075 struct video_device
*vfd
= video_devdata(file
);
2076 struct v4l2_frequency_band
*p
= arg
;
2077 enum v4l2_tuner_type type
;
2080 if (vfd
->vfl_type
== VFL_TYPE_SDR
) {
2081 if (p
->type
!= V4L2_TUNER_ADC
&& p
->type
!= V4L2_TUNER_RF
)
2085 type
= (vfd
->vfl_type
== VFL_TYPE_RADIO
) ?
2086 V4L2_TUNER_RADIO
: V4L2_TUNER_ANALOG_TV
;
2087 if (type
!= p
->type
)
2090 if (ops
->vidioc_enum_freq_bands
) {
2091 err
= ops
->vidioc_enum_freq_bands(file
, fh
, p
);
2095 if (is_valid_ioctl(vfd
, VIDIOC_G_TUNER
)) {
2096 struct v4l2_tuner t
= {
2103 err
= ops
->vidioc_g_tuner(file
, fh
, &t
);
2106 p
->capability
= t
.capability
| V4L2_TUNER_CAP_FREQ_BANDS
;
2107 p
->rangelow
= t
.rangelow
;
2108 p
->rangehigh
= t
.rangehigh
;
2109 p
->modulation
= (type
== V4L2_TUNER_RADIO
) ?
2110 V4L2_BAND_MODULATION_FM
: V4L2_BAND_MODULATION_VSB
;
2113 if (is_valid_ioctl(vfd
, VIDIOC_G_MODULATOR
)) {
2114 struct v4l2_modulator m
= {
2118 if (type
!= V4L2_TUNER_RADIO
)
2122 err
= ops
->vidioc_g_modulator(file
, fh
, &m
);
2125 p
->capability
= m
.capability
| V4L2_TUNER_CAP_FREQ_BANDS
;
2126 p
->rangelow
= m
.rangelow
;
2127 p
->rangehigh
= m
.rangehigh
;
2128 p
->modulation
= (type
== V4L2_TUNER_RADIO
) ?
2129 V4L2_BAND_MODULATION_FM
: V4L2_BAND_MODULATION_VSB
;
2135 struct v4l2_ioctl_info
{
2138 const char * const name
;
2141 int (*func
)(const struct v4l2_ioctl_ops
*ops
,
2142 struct file
*file
, void *fh
, void *p
);
2144 void (*debug
)(const void *arg
, bool write_only
);
2147 /* This control needs a priority check */
2148 #define INFO_FL_PRIO (1 << 0)
2149 /* This control can be valid if the filehandle passes a control handler. */
2150 #define INFO_FL_CTRL (1 << 1)
2151 /* This is a standard ioctl, no need for special code */
2152 #define INFO_FL_STD (1 << 2)
2153 /* This is ioctl has its own function */
2154 #define INFO_FL_FUNC (1 << 3)
2156 #define INFO_FL_QUEUE (1 << 4)
2157 /* Zero struct from after the field to the end */
2158 #define INFO_FL_CLEAR(v4l2_struct, field) \
2159 ((offsetof(struct v4l2_struct, field) + \
2160 sizeof(((struct v4l2_struct *)0)->field)) << 16)
2161 #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
2163 #define IOCTL_INFO_STD(_ioctl, _vidioc, _debug, _flags) \
2164 [_IOC_NR(_ioctl)] = { \
2166 .flags = _flags | INFO_FL_STD, \
2168 .u.offset = offsetof(struct v4l2_ioctl_ops, _vidioc), \
2172 #define IOCTL_INFO_FNC(_ioctl, _func, _debug, _flags) \
2173 [_IOC_NR(_ioctl)] = { \
2175 .flags = _flags | INFO_FL_FUNC, \
2181 static struct v4l2_ioctl_info v4l2_ioctls
[] = {
2182 IOCTL_INFO_FNC(VIDIOC_QUERYCAP
, v4l_querycap
, v4l_print_querycap
, 0),
2183 IOCTL_INFO_FNC(VIDIOC_ENUM_FMT
, v4l_enum_fmt
, v4l_print_fmtdesc
, INFO_FL_CLEAR(v4l2_fmtdesc
, type
)),
2184 IOCTL_INFO_FNC(VIDIOC_G_FMT
, v4l_g_fmt
, v4l_print_format
, 0),
2185 IOCTL_INFO_FNC(VIDIOC_S_FMT
, v4l_s_fmt
, v4l_print_format
, INFO_FL_PRIO
),
2186 IOCTL_INFO_FNC(VIDIOC_REQBUFS
, v4l_reqbufs
, v4l_print_requestbuffers
, INFO_FL_PRIO
| INFO_FL_QUEUE
),
2187 IOCTL_INFO_FNC(VIDIOC_QUERYBUF
, v4l_querybuf
, v4l_print_buffer
, INFO_FL_QUEUE
| INFO_FL_CLEAR(v4l2_buffer
, length
)),
2188 IOCTL_INFO_STD(VIDIOC_G_FBUF
, vidioc_g_fbuf
, v4l_print_framebuffer
, 0),
2189 IOCTL_INFO_STD(VIDIOC_S_FBUF
, vidioc_s_fbuf
, v4l_print_framebuffer
, INFO_FL_PRIO
),
2190 IOCTL_INFO_FNC(VIDIOC_OVERLAY
, v4l_overlay
, v4l_print_u32
, INFO_FL_PRIO
),
2191 IOCTL_INFO_FNC(VIDIOC_QBUF
, v4l_qbuf
, v4l_print_buffer
, INFO_FL_QUEUE
),
2192 IOCTL_INFO_STD(VIDIOC_EXPBUF
, vidioc_expbuf
, v4l_print_exportbuffer
, INFO_FL_QUEUE
| INFO_FL_CLEAR(v4l2_exportbuffer
, flags
)),
2193 IOCTL_INFO_FNC(VIDIOC_DQBUF
, v4l_dqbuf
, v4l_print_buffer
, INFO_FL_QUEUE
),
2194 IOCTL_INFO_FNC(VIDIOC_STREAMON
, v4l_streamon
, v4l_print_buftype
, INFO_FL_PRIO
| INFO_FL_QUEUE
),
2195 IOCTL_INFO_FNC(VIDIOC_STREAMOFF
, v4l_streamoff
, v4l_print_buftype
, INFO_FL_PRIO
| INFO_FL_QUEUE
),
2196 IOCTL_INFO_FNC(VIDIOC_G_PARM
, v4l_g_parm
, v4l_print_streamparm
, INFO_FL_CLEAR(v4l2_streamparm
, type
)),
2197 IOCTL_INFO_FNC(VIDIOC_S_PARM
, v4l_s_parm
, v4l_print_streamparm
, INFO_FL_PRIO
),
2198 IOCTL_INFO_STD(VIDIOC_G_STD
, vidioc_g_std
, v4l_print_std
, 0),
2199 IOCTL_INFO_FNC(VIDIOC_S_STD
, v4l_s_std
, v4l_print_std
, INFO_FL_PRIO
),
2200 IOCTL_INFO_FNC(VIDIOC_ENUMSTD
, v4l_enumstd
, v4l_print_standard
, INFO_FL_CLEAR(v4l2_standard
, index
)),
2201 IOCTL_INFO_FNC(VIDIOC_ENUMINPUT
, v4l_enuminput
, v4l_print_enuminput
, INFO_FL_CLEAR(v4l2_input
, index
)),
2202 IOCTL_INFO_FNC(VIDIOC_G_CTRL
, v4l_g_ctrl
, v4l_print_control
, INFO_FL_CTRL
| INFO_FL_CLEAR(v4l2_control
, id
)),
2203 IOCTL_INFO_FNC(VIDIOC_S_CTRL
, v4l_s_ctrl
, v4l_print_control
, INFO_FL_PRIO
| INFO_FL_CTRL
),
2204 IOCTL_INFO_FNC(VIDIOC_G_TUNER
, v4l_g_tuner
, v4l_print_tuner
, INFO_FL_CLEAR(v4l2_tuner
, index
)),
2205 IOCTL_INFO_FNC(VIDIOC_S_TUNER
, v4l_s_tuner
, v4l_print_tuner
, INFO_FL_PRIO
),
2206 IOCTL_INFO_STD(VIDIOC_G_AUDIO
, vidioc_g_audio
, v4l_print_audio
, 0),
2207 IOCTL_INFO_STD(VIDIOC_S_AUDIO
, vidioc_s_audio
, v4l_print_audio
, INFO_FL_PRIO
),
2208 IOCTL_INFO_FNC(VIDIOC_QUERYCTRL
, v4l_queryctrl
, v4l_print_queryctrl
, INFO_FL_CTRL
| INFO_FL_CLEAR(v4l2_queryctrl
, id
)),
2209 IOCTL_INFO_FNC(VIDIOC_QUERYMENU
, v4l_querymenu
, v4l_print_querymenu
, INFO_FL_CTRL
| INFO_FL_CLEAR(v4l2_querymenu
, index
)),
2210 IOCTL_INFO_STD(VIDIOC_G_INPUT
, vidioc_g_input
, v4l_print_u32
, 0),
2211 IOCTL_INFO_FNC(VIDIOC_S_INPUT
, v4l_s_input
, v4l_print_u32
, INFO_FL_PRIO
),
2212 IOCTL_INFO_STD(VIDIOC_G_EDID
, vidioc_g_edid
, v4l_print_edid
, 0),
2213 IOCTL_INFO_STD(VIDIOC_S_EDID
, vidioc_s_edid
, v4l_print_edid
, INFO_FL_PRIO
),
2214 IOCTL_INFO_STD(VIDIOC_G_OUTPUT
, vidioc_g_output
, v4l_print_u32
, 0),
2215 IOCTL_INFO_FNC(VIDIOC_S_OUTPUT
, v4l_s_output
, v4l_print_u32
, INFO_FL_PRIO
),
2216 IOCTL_INFO_FNC(VIDIOC_ENUMOUTPUT
, v4l_enumoutput
, v4l_print_enumoutput
, INFO_FL_CLEAR(v4l2_output
, index
)),
2217 IOCTL_INFO_STD(VIDIOC_G_AUDOUT
, vidioc_g_audout
, v4l_print_audioout
, 0),
2218 IOCTL_INFO_STD(VIDIOC_S_AUDOUT
, vidioc_s_audout
, v4l_print_audioout
, INFO_FL_PRIO
),
2219 IOCTL_INFO_FNC(VIDIOC_G_MODULATOR
, v4l_g_modulator
, v4l_print_modulator
, INFO_FL_CLEAR(v4l2_modulator
, index
)),
2220 IOCTL_INFO_STD(VIDIOC_S_MODULATOR
, vidioc_s_modulator
, v4l_print_modulator
, INFO_FL_PRIO
),
2221 IOCTL_INFO_FNC(VIDIOC_G_FREQUENCY
, v4l_g_frequency
, v4l_print_frequency
, INFO_FL_CLEAR(v4l2_frequency
, tuner
)),
2222 IOCTL_INFO_FNC(VIDIOC_S_FREQUENCY
, v4l_s_frequency
, v4l_print_frequency
, INFO_FL_PRIO
),
2223 IOCTL_INFO_FNC(VIDIOC_CROPCAP
, v4l_cropcap
, v4l_print_cropcap
, INFO_FL_CLEAR(v4l2_cropcap
, type
)),
2224 IOCTL_INFO_FNC(VIDIOC_G_CROP
, v4l_g_crop
, v4l_print_crop
, INFO_FL_CLEAR(v4l2_crop
, type
)),
2225 IOCTL_INFO_FNC(VIDIOC_S_CROP
, v4l_s_crop
, v4l_print_crop
, INFO_FL_PRIO
),
2226 IOCTL_INFO_STD(VIDIOC_G_SELECTION
, vidioc_g_selection
, v4l_print_selection
, INFO_FL_CLEAR(v4l2_selection
, r
)),
2227 IOCTL_INFO_STD(VIDIOC_S_SELECTION
, vidioc_s_selection
, v4l_print_selection
, INFO_FL_PRIO
| INFO_FL_CLEAR(v4l2_selection
, r
)),
2228 IOCTL_INFO_STD(VIDIOC_G_JPEGCOMP
, vidioc_g_jpegcomp
, v4l_print_jpegcompression
, 0),
2229 IOCTL_INFO_STD(VIDIOC_S_JPEGCOMP
, vidioc_s_jpegcomp
, v4l_print_jpegcompression
, INFO_FL_PRIO
),
2230 IOCTL_INFO_FNC(VIDIOC_QUERYSTD
, v4l_querystd
, v4l_print_std
, 0),
2231 IOCTL_INFO_FNC(VIDIOC_TRY_FMT
, v4l_try_fmt
, v4l_print_format
, 0),
2232 IOCTL_INFO_STD(VIDIOC_ENUMAUDIO
, vidioc_enumaudio
, v4l_print_audio
, INFO_FL_CLEAR(v4l2_audio
, index
)),
2233 IOCTL_INFO_STD(VIDIOC_ENUMAUDOUT
, vidioc_enumaudout
, v4l_print_audioout
, INFO_FL_CLEAR(v4l2_audioout
, index
)),
2234 IOCTL_INFO_FNC(VIDIOC_G_PRIORITY
, v4l_g_priority
, v4l_print_u32
, 0),
2235 IOCTL_INFO_FNC(VIDIOC_S_PRIORITY
, v4l_s_priority
, v4l_print_u32
, INFO_FL_PRIO
),
2236 IOCTL_INFO_FNC(VIDIOC_G_SLICED_VBI_CAP
, v4l_g_sliced_vbi_cap
, v4l_print_sliced_vbi_cap
, INFO_FL_CLEAR(v4l2_sliced_vbi_cap
, type
)),
2237 IOCTL_INFO_FNC(VIDIOC_LOG_STATUS
, v4l_log_status
, v4l_print_newline
, 0),
2238 IOCTL_INFO_FNC(VIDIOC_G_EXT_CTRLS
, v4l_g_ext_ctrls
, v4l_print_ext_controls
, INFO_FL_CTRL
),
2239 IOCTL_INFO_FNC(VIDIOC_S_EXT_CTRLS
, v4l_s_ext_ctrls
, v4l_print_ext_controls
, INFO_FL_PRIO
| INFO_FL_CTRL
),
2240 IOCTL_INFO_FNC(VIDIOC_TRY_EXT_CTRLS
, v4l_try_ext_ctrls
, v4l_print_ext_controls
, INFO_FL_CTRL
),
2241 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMESIZES
, vidioc_enum_framesizes
, v4l_print_frmsizeenum
, INFO_FL_CLEAR(v4l2_frmsizeenum
, pixel_format
)),
2242 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMEINTERVALS
, vidioc_enum_frameintervals
, v4l_print_frmivalenum
, INFO_FL_CLEAR(v4l2_frmivalenum
, height
)),
2243 IOCTL_INFO_STD(VIDIOC_G_ENC_INDEX
, vidioc_g_enc_index
, v4l_print_enc_idx
, 0),
2244 IOCTL_INFO_STD(VIDIOC_ENCODER_CMD
, vidioc_encoder_cmd
, v4l_print_encoder_cmd
, INFO_FL_PRIO
| INFO_FL_CLEAR(v4l2_encoder_cmd
, flags
)),
2245 IOCTL_INFO_STD(VIDIOC_TRY_ENCODER_CMD
, vidioc_try_encoder_cmd
, v4l_print_encoder_cmd
, INFO_FL_CLEAR(v4l2_encoder_cmd
, flags
)),
2246 IOCTL_INFO_STD(VIDIOC_DECODER_CMD
, vidioc_decoder_cmd
, v4l_print_decoder_cmd
, INFO_FL_PRIO
),
2247 IOCTL_INFO_STD(VIDIOC_TRY_DECODER_CMD
, vidioc_try_decoder_cmd
, v4l_print_decoder_cmd
, 0),
2248 IOCTL_INFO_FNC(VIDIOC_DBG_S_REGISTER
, v4l_dbg_s_register
, v4l_print_dbg_register
, 0),
2249 IOCTL_INFO_FNC(VIDIOC_DBG_G_REGISTER
, v4l_dbg_g_register
, v4l_print_dbg_register
, 0),
2250 IOCTL_INFO_FNC(VIDIOC_S_HW_FREQ_SEEK
, v4l_s_hw_freq_seek
, v4l_print_hw_freq_seek
, INFO_FL_PRIO
),
2251 IOCTL_INFO_STD(VIDIOC_S_DV_TIMINGS
, vidioc_s_dv_timings
, v4l_print_dv_timings
, INFO_FL_PRIO
),
2252 IOCTL_INFO_STD(VIDIOC_G_DV_TIMINGS
, vidioc_g_dv_timings
, v4l_print_dv_timings
, 0),
2253 IOCTL_INFO_FNC(VIDIOC_DQEVENT
, v4l_dqevent
, v4l_print_event
, 0),
2254 IOCTL_INFO_FNC(VIDIOC_SUBSCRIBE_EVENT
, v4l_subscribe_event
, v4l_print_event_subscription
, 0),
2255 IOCTL_INFO_FNC(VIDIOC_UNSUBSCRIBE_EVENT
, v4l_unsubscribe_event
, v4l_print_event_subscription
, 0),
2256 IOCTL_INFO_FNC(VIDIOC_CREATE_BUFS
, v4l_create_bufs
, v4l_print_create_buffers
, INFO_FL_PRIO
| INFO_FL_QUEUE
),
2257 IOCTL_INFO_FNC(VIDIOC_PREPARE_BUF
, v4l_prepare_buf
, v4l_print_buffer
, INFO_FL_QUEUE
),
2258 IOCTL_INFO_STD(VIDIOC_ENUM_DV_TIMINGS
, vidioc_enum_dv_timings
, v4l_print_enum_dv_timings
, 0),
2259 IOCTL_INFO_STD(VIDIOC_QUERY_DV_TIMINGS
, vidioc_query_dv_timings
, v4l_print_dv_timings
, 0),
2260 IOCTL_INFO_STD(VIDIOC_DV_TIMINGS_CAP
, vidioc_dv_timings_cap
, v4l_print_dv_timings_cap
, INFO_FL_CLEAR(v4l2_dv_timings_cap
, type
)),
2261 IOCTL_INFO_FNC(VIDIOC_ENUM_FREQ_BANDS
, v4l_enum_freq_bands
, v4l_print_freq_band
, 0),
2262 IOCTL_INFO_FNC(VIDIOC_DBG_G_CHIP_INFO
, v4l_dbg_g_chip_info
, v4l_print_dbg_chip_info
, INFO_FL_CLEAR(v4l2_dbg_chip_info
, match
)),
2263 IOCTL_INFO_FNC(VIDIOC_QUERY_EXT_CTRL
, v4l_query_ext_ctrl
, v4l_print_query_ext_ctrl
, INFO_FL_CTRL
| INFO_FL_CLEAR(v4l2_query_ext_ctrl
, id
)),
2265 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
2267 bool v4l2_is_known_ioctl(unsigned int cmd
)
2269 if (_IOC_NR(cmd
) >= V4L2_IOCTLS
)
2271 return v4l2_ioctls
[_IOC_NR(cmd
)].ioctl
== cmd
;
2274 struct mutex
*v4l2_ioctl_get_lock(struct video_device
*vdev
, unsigned cmd
)
2276 if (_IOC_NR(cmd
) >= V4L2_IOCTLS
)
2278 if (test_bit(_IOC_NR(cmd
), vdev
->disable_locking
))
2280 if (vdev
->queue
&& vdev
->queue
->lock
&&
2281 (v4l2_ioctls
[_IOC_NR(cmd
)].flags
& INFO_FL_QUEUE
))
2282 return vdev
->queue
->lock
;
2286 /* Common ioctl debug function. This function can be used by
2287 external ioctl messages as well as internal V4L ioctl */
2288 void v4l_printk_ioctl(const char *prefix
, unsigned int cmd
)
2290 const char *dir
, *type
;
2293 printk(KERN_DEBUG
"%s: ", prefix
);
2295 switch (_IOC_TYPE(cmd
)) {
2300 if (_IOC_NR(cmd
) >= V4L2_IOCTLS
) {
2304 pr_cont("%s", v4l2_ioctls
[_IOC_NR(cmd
)].name
);
2311 switch (_IOC_DIR(cmd
)) {
2312 case _IOC_NONE
: dir
= "--"; break;
2313 case _IOC_READ
: dir
= "r-"; break;
2314 case _IOC_WRITE
: dir
= "-w"; break;
2315 case _IOC_READ
| _IOC_WRITE
: dir
= "rw"; break;
2316 default: dir
= "*ERR*"; break;
2318 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
2319 type
, _IOC_TYPE(cmd
), dir
, _IOC_NR(cmd
), cmd
);
2321 EXPORT_SYMBOL(v4l_printk_ioctl
);
2323 static long __video_do_ioctl(struct file
*file
,
2324 unsigned int cmd
, void *arg
)
2326 struct video_device
*vfd
= video_devdata(file
);
2327 const struct v4l2_ioctl_ops
*ops
= vfd
->ioctl_ops
;
2328 bool write_only
= false;
2329 struct v4l2_ioctl_info default_info
;
2330 const struct v4l2_ioctl_info
*info
;
2331 void *fh
= file
->private_data
;
2332 struct v4l2_fh
*vfh
= NULL
;
2333 int debug
= vfd
->debug
;
2337 pr_warn("%s: has no ioctl_ops.\n",
2338 video_device_node_name(vfd
));
2342 if (test_bit(V4L2_FL_USES_V4L2_FH
, &vfd
->flags
))
2343 vfh
= file
->private_data
;
2345 if (v4l2_is_known_ioctl(cmd
)) {
2346 info
= &v4l2_ioctls
[_IOC_NR(cmd
)];
2348 if (!test_bit(_IOC_NR(cmd
), vfd
->valid_ioctls
) &&
2349 !((info
->flags
& INFO_FL_CTRL
) && vfh
&& vfh
->ctrl_handler
))
2352 if (vfh
&& (info
->flags
& INFO_FL_PRIO
)) {
2353 ret
= v4l2_prio_check(vfd
->prio
, vfh
->prio
);
2358 default_info
.ioctl
= cmd
;
2359 default_info
.flags
= 0;
2360 default_info
.debug
= v4l_print_default
;
2361 info
= &default_info
;
2364 write_only
= _IOC_DIR(cmd
) == _IOC_WRITE
;
2365 if (info
->flags
& INFO_FL_STD
) {
2366 typedef int (*vidioc_op
)(struct file
*file
, void *fh
, void *p
);
2367 const void *p
= vfd
->ioctl_ops
;
2368 const vidioc_op
*vidioc
= p
+ info
->u
.offset
;
2370 ret
= (*vidioc
)(file
, fh
, arg
);
2371 } else if (info
->flags
& INFO_FL_FUNC
) {
2372 ret
= info
->u
.func(ops
, file
, fh
, arg
);
2373 } else if (!ops
->vidioc_default
) {
2376 ret
= ops
->vidioc_default(file
, fh
,
2377 vfh
? v4l2_prio_check(vfd
->prio
, vfh
->prio
) >= 0 : 0,
2383 v4l_printk_ioctl(video_device_node_name(vfd
), cmd
);
2385 pr_cont(": error %ld", ret
);
2386 if (debug
== V4L2_DEBUG_IOCTL
)
2388 else if (_IOC_DIR(cmd
) == _IOC_NONE
)
2389 info
->debug(arg
, write_only
);
2392 info
->debug(arg
, write_only
);
2399 static int check_array_args(unsigned int cmd
, void *parg
, size_t *array_size
,
2400 void __user
**user_ptr
, void ***kernel_ptr
)
2405 case VIDIOC_PREPARE_BUF
:
2406 case VIDIOC_QUERYBUF
:
2408 case VIDIOC_DQBUF
: {
2409 struct v4l2_buffer
*buf
= parg
;
2411 if (V4L2_TYPE_IS_MULTIPLANAR(buf
->type
) && buf
->length
> 0) {
2412 if (buf
->length
> VIDEO_MAX_PLANES
) {
2416 *user_ptr
= (void __user
*)buf
->m
.planes
;
2417 *kernel_ptr
= (void **)&buf
->m
.planes
;
2418 *array_size
= sizeof(struct v4l2_plane
) * buf
->length
;
2425 case VIDIOC_S_EDID
: {
2426 struct v4l2_edid
*edid
= parg
;
2429 if (edid
->blocks
> 256) {
2433 *user_ptr
= (void __user
*)edid
->edid
;
2434 *kernel_ptr
= (void **)&edid
->edid
;
2435 *array_size
= edid
->blocks
* 128;
2441 case VIDIOC_S_EXT_CTRLS
:
2442 case VIDIOC_G_EXT_CTRLS
:
2443 case VIDIOC_TRY_EXT_CTRLS
: {
2444 struct v4l2_ext_controls
*ctrls
= parg
;
2446 if (ctrls
->count
!= 0) {
2447 if (ctrls
->count
> V4L2_CID_MAX_CTRLS
) {
2451 *user_ptr
= (void __user
*)ctrls
->controls
;
2452 *kernel_ptr
= (void **)&ctrls
->controls
;
2453 *array_size
= sizeof(struct v4l2_ext_control
)
2465 video_usercopy(struct file
*file
, unsigned int cmd
, unsigned long arg
,
2470 void *parg
= (void *)arg
;
2472 bool has_array_args
;
2473 size_t array_size
= 0;
2474 void __user
*user_ptr
= NULL
;
2475 void **kernel_ptr
= NULL
;
2477 /* Copy arguments into temp kernel buffer */
2478 if (_IOC_DIR(cmd
) != _IOC_NONE
) {
2479 if (_IOC_SIZE(cmd
) <= sizeof(sbuf
)) {
2482 /* too big to allocate from stack */
2483 mbuf
= kmalloc(_IOC_SIZE(cmd
), GFP_KERNEL
);
2490 if (_IOC_DIR(cmd
) & _IOC_WRITE
) {
2491 unsigned int n
= _IOC_SIZE(cmd
);
2494 * In some cases, only a few fields are used as input,
2495 * i.e. when the app sets "index" and then the driver
2496 * fills in the rest of the structure for the thing
2497 * with that index. We only need to copy up the first
2500 if (v4l2_is_known_ioctl(cmd
)) {
2501 u32 flags
= v4l2_ioctls
[_IOC_NR(cmd
)].flags
;
2502 if (flags
& INFO_FL_CLEAR_MASK
)
2503 n
= (flags
& INFO_FL_CLEAR_MASK
) >> 16;
2506 if (copy_from_user(parg
, (void __user
*)arg
, n
))
2509 /* zero out anything we don't copy from userspace */
2510 if (n
< _IOC_SIZE(cmd
))
2511 memset((u8
*)parg
+ n
, 0, _IOC_SIZE(cmd
) - n
);
2513 /* read-only ioctl */
2514 memset(parg
, 0, _IOC_SIZE(cmd
));
2518 err
= check_array_args(cmd
, parg
, &array_size
, &user_ptr
, &kernel_ptr
);
2521 has_array_args
= err
;
2523 if (has_array_args
) {
2525 * When adding new types of array args, make sure that the
2526 * parent argument to ioctl (which contains the pointer to the
2527 * array) fits into sbuf (so that mbuf will still remain
2528 * unused up to here).
2530 mbuf
= kmalloc(array_size
, GFP_KERNEL
);
2533 goto out_array_args
;
2535 if (copy_from_user(mbuf
, user_ptr
, array_size
))
2536 goto out_array_args
;
2541 err
= func(file
, cmd
, parg
);
2542 if (err
== -ENOIOCTLCMD
)
2545 if (cmd
== VIDIOC_DQBUF
)
2546 trace_v4l2_dqbuf(video_devdata(file
)->minor
, parg
);
2547 else if (cmd
== VIDIOC_QBUF
)
2548 trace_v4l2_qbuf(video_devdata(file
)->minor
, parg
);
2551 if (has_array_args
) {
2552 *kernel_ptr
= (void __force
*)user_ptr
;
2553 if (copy_to_user(user_ptr
, mbuf
, array_size
))
2555 goto out_array_args
;
2557 /* VIDIOC_QUERY_DV_TIMINGS can return an error, but still have valid
2558 results that must be returned. */
2559 if (err
< 0 && cmd
!= VIDIOC_QUERY_DV_TIMINGS
)
2563 /* Copy results into user buffer */
2564 switch (_IOC_DIR(cmd
)) {
2566 case (_IOC_WRITE
| _IOC_READ
):
2567 if (copy_to_user((void __user
*)arg
, parg
, _IOC_SIZE(cmd
)))
2576 EXPORT_SYMBOL(video_usercopy
);
2578 long video_ioctl2(struct file
*file
,
2579 unsigned int cmd
, unsigned long arg
)
2581 return video_usercopy(file
, cmd
, arg
, __video_do_ioctl
);
2583 EXPORT_SYMBOL(video_ioctl2
);