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, "
260 "flags=0x%x, ycbcr_enc=%u, quantization=%u\n",
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
, pix
->ycbcr_enc
,
271 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE
:
272 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE
:
274 pr_cont(", width=%u, height=%u, "
275 "format=%c%c%c%c, field=%s, "
276 "colorspace=%d, num_planes=%u, flags=0x%x, "
277 "ycbcr_enc=%u, quantization=%u\n",
278 mp
->width
, mp
->height
,
279 (mp
->pixelformat
& 0xff),
280 (mp
->pixelformat
>> 8) & 0xff,
281 (mp
->pixelformat
>> 16) & 0xff,
282 (mp
->pixelformat
>> 24) & 0xff,
283 prt_names(mp
->field
, v4l2_field_names
),
284 mp
->colorspace
, mp
->num_planes
, mp
->flags
,
285 mp
->ycbcr_enc
, mp
->quantization
);
286 for (i
= 0; i
< mp
->num_planes
; i
++)
287 printk(KERN_DEBUG
"plane %u: bytesperline=%u sizeimage=%u\n", i
,
288 mp
->plane_fmt
[i
].bytesperline
,
289 mp
->plane_fmt
[i
].sizeimage
);
291 case V4L2_BUF_TYPE_VIDEO_OVERLAY
:
292 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
:
294 /* Note: we can't print the clip list here since the clips
295 * pointer is a userspace pointer, not a kernelspace
297 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",
298 win
->w
.width
, win
->w
.height
, win
->w
.left
, win
->w
.top
,
299 prt_names(win
->field
, v4l2_field_names
),
300 win
->chromakey
, win
->clipcount
, win
->clips
,
301 win
->bitmap
, win
->global_alpha
);
303 case V4L2_BUF_TYPE_VBI_CAPTURE
:
304 case V4L2_BUF_TYPE_VBI_OUTPUT
:
306 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, "
307 "sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n",
308 vbi
->sampling_rate
, vbi
->offset
,
309 vbi
->samples_per_line
,
310 (vbi
->sample_format
& 0xff),
311 (vbi
->sample_format
>> 8) & 0xff,
312 (vbi
->sample_format
>> 16) & 0xff,
313 (vbi
->sample_format
>> 24) & 0xff,
314 vbi
->start
[0], vbi
->start
[1],
315 vbi
->count
[0], vbi
->count
[1]);
317 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE
:
318 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT
:
319 sliced
= &p
->fmt
.sliced
;
320 pr_cont(", service_set=0x%08x, io_size=%d\n",
321 sliced
->service_set
, sliced
->io_size
);
322 for (i
= 0; i
< 24; i
++)
323 printk(KERN_DEBUG
"line[%02u]=0x%04x, 0x%04x\n", i
,
324 sliced
->service_lines
[0][i
],
325 sliced
->service_lines
[1][i
]);
327 case V4L2_BUF_TYPE_SDR_CAPTURE
:
329 pr_cont(", pixelformat=%c%c%c%c\n",
330 (sdr
->pixelformat
>> 0) & 0xff,
331 (sdr
->pixelformat
>> 8) & 0xff,
332 (sdr
->pixelformat
>> 16) & 0xff,
333 (sdr
->pixelformat
>> 24) & 0xff);
338 static void v4l_print_framebuffer(const void *arg
, bool write_only
)
340 const struct v4l2_framebuffer
*p
= arg
;
342 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, "
343 "height=%u, pixelformat=%c%c%c%c, "
344 "bytesperline=%u, sizeimage=%u, colorspace=%d\n",
345 p
->capability
, p
->flags
, p
->base
,
346 p
->fmt
.width
, p
->fmt
.height
,
347 (p
->fmt
.pixelformat
& 0xff),
348 (p
->fmt
.pixelformat
>> 8) & 0xff,
349 (p
->fmt
.pixelformat
>> 16) & 0xff,
350 (p
->fmt
.pixelformat
>> 24) & 0xff,
351 p
->fmt
.bytesperline
, p
->fmt
.sizeimage
,
355 static void v4l_print_buftype(const void *arg
, bool write_only
)
357 pr_cont("type=%s\n", prt_names(*(u32
*)arg
, v4l2_type_names
));
360 static void v4l_print_modulator(const void *arg
, bool write_only
)
362 const struct v4l2_modulator
*p
= arg
;
365 pr_cont("index=%u, txsubchans=0x%x\n", p
->index
, p
->txsubchans
);
367 pr_cont("index=%u, name=%.*s, capability=0x%x, "
368 "rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
369 p
->index
, (int)sizeof(p
->name
), p
->name
, p
->capability
,
370 p
->rangelow
, p
->rangehigh
, p
->txsubchans
);
373 static void v4l_print_tuner(const void *arg
, bool write_only
)
375 const struct v4l2_tuner
*p
= arg
;
378 pr_cont("index=%u, audmode=%u\n", p
->index
, p
->audmode
);
380 pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, "
381 "rangelow=%u, rangehigh=%u, signal=%u, afc=%d, "
382 "rxsubchans=0x%x, audmode=%u\n",
383 p
->index
, (int)sizeof(p
->name
), p
->name
, p
->type
,
384 p
->capability
, p
->rangelow
,
385 p
->rangehigh
, p
->signal
, p
->afc
,
386 p
->rxsubchans
, p
->audmode
);
389 static void v4l_print_frequency(const void *arg
, bool write_only
)
391 const struct v4l2_frequency
*p
= arg
;
393 pr_cont("tuner=%u, type=%u, frequency=%u\n",
394 p
->tuner
, p
->type
, p
->frequency
);
397 static void v4l_print_standard(const void *arg
, bool write_only
)
399 const struct v4l2_standard
*p
= arg
;
401 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, "
402 "framelines=%u\n", p
->index
,
403 (unsigned long long)p
->id
, (int)sizeof(p
->name
), p
->name
,
404 p
->frameperiod
.numerator
,
405 p
->frameperiod
.denominator
,
409 static void v4l_print_std(const void *arg
, bool write_only
)
411 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg
);
414 static void v4l_print_hw_freq_seek(const void *arg
, bool write_only
)
416 const struct v4l2_hw_freq_seek
*p
= arg
;
418 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, "
419 "rangelow=%u, rangehigh=%u\n",
420 p
->tuner
, p
->type
, p
->seek_upward
, p
->wrap_around
, p
->spacing
,
421 p
->rangelow
, p
->rangehigh
);
424 static void v4l_print_requestbuffers(const void *arg
, bool write_only
)
426 const struct v4l2_requestbuffers
*p
= arg
;
428 pr_cont("count=%d, type=%s, memory=%s\n",
430 prt_names(p
->type
, v4l2_type_names
),
431 prt_names(p
->memory
, v4l2_memory_names
));
434 static void v4l_print_buffer(const void *arg
, bool write_only
)
436 const struct v4l2_buffer
*p
= arg
;
437 const struct v4l2_timecode
*tc
= &p
->timecode
;
438 const struct v4l2_plane
*plane
;
441 pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, "
442 "flags=0x%08x, field=%s, sequence=%d, memory=%s",
443 p
->timestamp
.tv_sec
/ 3600,
444 (int)(p
->timestamp
.tv_sec
/ 60) % 60,
445 (int)(p
->timestamp
.tv_sec
% 60),
446 (long)p
->timestamp
.tv_usec
,
448 prt_names(p
->type
, v4l2_type_names
),
449 p
->flags
, prt_names(p
->field
, v4l2_field_names
),
450 p
->sequence
, prt_names(p
->memory
, v4l2_memory_names
));
452 if (V4L2_TYPE_IS_MULTIPLANAR(p
->type
) && p
->m
.planes
) {
454 for (i
= 0; i
< p
->length
; ++i
) {
455 plane
= &p
->m
.planes
[i
];
457 "plane %d: bytesused=%d, data_offset=0x%08x, "
458 "offset/userptr=0x%lx, length=%d\n",
459 i
, plane
->bytesused
, plane
->data_offset
,
460 plane
->m
.userptr
, plane
->length
);
463 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n",
464 p
->bytesused
, p
->m
.userptr
, p
->length
);
467 printk(KERN_DEBUG
"timecode=%02d:%02d:%02d type=%d, "
468 "flags=0x%08x, frames=%d, userbits=0x%08x\n",
469 tc
->hours
, tc
->minutes
, tc
->seconds
,
470 tc
->type
, tc
->flags
, tc
->frames
, *(__u32
*)tc
->userbits
);
473 static void v4l_print_exportbuffer(const void *arg
, bool write_only
)
475 const struct v4l2_exportbuffer
*p
= arg
;
477 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n",
478 p
->fd
, prt_names(p
->type
, v4l2_type_names
),
479 p
->index
, p
->plane
, p
->flags
);
482 static void v4l_print_create_buffers(const void *arg
, bool write_only
)
484 const struct v4l2_create_buffers
*p
= arg
;
486 pr_cont("index=%d, count=%d, memory=%s, ",
488 prt_names(p
->memory
, v4l2_memory_names
));
489 v4l_print_format(&p
->format
, write_only
);
492 static void v4l_print_streamparm(const void *arg
, bool write_only
)
494 const struct v4l2_streamparm
*p
= arg
;
496 pr_cont("type=%s", prt_names(p
->type
, v4l2_type_names
));
498 if (p
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
||
499 p
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE
) {
500 const struct v4l2_captureparm
*c
= &p
->parm
.capture
;
502 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, "
503 "extendedmode=%d, readbuffers=%d\n",
504 c
->capability
, c
->capturemode
,
505 c
->timeperframe
.numerator
, c
->timeperframe
.denominator
,
506 c
->extendedmode
, c
->readbuffers
);
507 } else if (p
->type
== V4L2_BUF_TYPE_VIDEO_OUTPUT
||
508 p
->type
== V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE
) {
509 const struct v4l2_outputparm
*c
= &p
->parm
.output
;
511 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, "
512 "extendedmode=%d, writebuffers=%d\n",
513 c
->capability
, c
->outputmode
,
514 c
->timeperframe
.numerator
, c
->timeperframe
.denominator
,
515 c
->extendedmode
, c
->writebuffers
);
521 static void v4l_print_queryctrl(const void *arg
, bool write_only
)
523 const struct v4l2_queryctrl
*p
= arg
;
525 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, "
526 "step=%d, default=%d, flags=0x%08x\n",
527 p
->id
, p
->type
, (int)sizeof(p
->name
), p
->name
,
528 p
->minimum
, p
->maximum
,
529 p
->step
, p
->default_value
, p
->flags
);
532 static void v4l_print_query_ext_ctrl(const void *arg
, bool write_only
)
534 const struct v4l2_query_ext_ctrl
*p
= arg
;
536 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%lld/%lld, "
537 "step=%lld, default=%lld, flags=0x%08x, elem_size=%u, elems=%u, "
538 "nr_of_dims=%u, dims=%u,%u,%u,%u\n",
539 p
->id
, p
->type
, (int)sizeof(p
->name
), p
->name
,
540 p
->minimum
, p
->maximum
,
541 p
->step
, p
->default_value
, p
->flags
,
542 p
->elem_size
, p
->elems
, p
->nr_of_dims
,
543 p
->dims
[0], p
->dims
[1], p
->dims
[2], p
->dims
[3]);
546 static void v4l_print_querymenu(const void *arg
, bool write_only
)
548 const struct v4l2_querymenu
*p
= arg
;
550 pr_cont("id=0x%x, index=%d\n", p
->id
, p
->index
);
553 static void v4l_print_control(const void *arg
, bool write_only
)
555 const struct v4l2_control
*p
= arg
;
557 pr_cont("id=0x%x, value=%d\n", p
->id
, p
->value
);
560 static void v4l_print_ext_controls(const void *arg
, bool write_only
)
562 const struct v4l2_ext_controls
*p
= arg
;
565 pr_cont("class=0x%x, count=%d, error_idx=%d",
566 p
->ctrl_class
, p
->count
, p
->error_idx
);
567 for (i
= 0; i
< p
->count
; i
++) {
568 if (!p
->controls
[i
].size
)
569 pr_cont(", id/val=0x%x/0x%x",
570 p
->controls
[i
].id
, p
->controls
[i
].value
);
572 pr_cont(", id/size=0x%x/%u",
573 p
->controls
[i
].id
, p
->controls
[i
].size
);
578 static void v4l_print_cropcap(const void *arg
, bool write_only
)
580 const struct v4l2_cropcap
*p
= arg
;
582 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, "
583 "defrect wxh=%dx%d, x,y=%d,%d, "
584 "pixelaspect %d/%d\n",
585 prt_names(p
->type
, v4l2_type_names
),
586 p
->bounds
.width
, p
->bounds
.height
,
587 p
->bounds
.left
, p
->bounds
.top
,
588 p
->defrect
.width
, p
->defrect
.height
,
589 p
->defrect
.left
, p
->defrect
.top
,
590 p
->pixelaspect
.numerator
, p
->pixelaspect
.denominator
);
593 static void v4l_print_crop(const void *arg
, bool write_only
)
595 const struct v4l2_crop
*p
= arg
;
597 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n",
598 prt_names(p
->type
, v4l2_type_names
),
599 p
->c
.width
, p
->c
.height
,
600 p
->c
.left
, p
->c
.top
);
603 static void v4l_print_selection(const void *arg
, bool write_only
)
605 const struct v4l2_selection
*p
= arg
;
607 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n",
608 prt_names(p
->type
, v4l2_type_names
),
610 p
->r
.width
, p
->r
.height
, p
->r
.left
, p
->r
.top
);
613 static void v4l_print_jpegcompression(const void *arg
, bool write_only
)
615 const struct v4l2_jpegcompression
*p
= arg
;
617 pr_cont("quality=%d, APPn=%d, APP_len=%d, "
618 "COM_len=%d, jpeg_markers=0x%x\n",
619 p
->quality
, p
->APPn
, p
->APP_len
,
620 p
->COM_len
, p
->jpeg_markers
);
623 static void v4l_print_enc_idx(const void *arg
, bool write_only
)
625 const struct v4l2_enc_idx
*p
= arg
;
627 pr_cont("entries=%d, entries_cap=%d\n",
628 p
->entries
, p
->entries_cap
);
631 static void v4l_print_encoder_cmd(const void *arg
, bool write_only
)
633 const struct v4l2_encoder_cmd
*p
= arg
;
635 pr_cont("cmd=%d, flags=0x%x\n",
639 static void v4l_print_decoder_cmd(const void *arg
, bool write_only
)
641 const struct v4l2_decoder_cmd
*p
= arg
;
643 pr_cont("cmd=%d, flags=0x%x\n", p
->cmd
, p
->flags
);
645 if (p
->cmd
== V4L2_DEC_CMD_START
)
646 pr_info("speed=%d, format=%u\n",
647 p
->start
.speed
, p
->start
.format
);
648 else if (p
->cmd
== V4L2_DEC_CMD_STOP
)
649 pr_info("pts=%llu\n", p
->stop
.pts
);
652 static void v4l_print_dbg_chip_info(const void *arg
, bool write_only
)
654 const struct v4l2_dbg_chip_info
*p
= arg
;
656 pr_cont("type=%u, ", p
->match
.type
);
657 if (p
->match
.type
== V4L2_CHIP_MATCH_I2C_DRIVER
)
658 pr_cont("name=%.*s, ",
659 (int)sizeof(p
->match
.name
), p
->match
.name
);
661 pr_cont("addr=%u, ", p
->match
.addr
);
662 pr_cont("name=%.*s\n", (int)sizeof(p
->name
), p
->name
);
665 static void v4l_print_dbg_register(const void *arg
, bool write_only
)
667 const struct v4l2_dbg_register
*p
= arg
;
669 pr_cont("type=%u, ", p
->match
.type
);
670 if (p
->match
.type
== V4L2_CHIP_MATCH_I2C_DRIVER
)
671 pr_cont("name=%.*s, ",
672 (int)sizeof(p
->match
.name
), p
->match
.name
);
674 pr_cont("addr=%u, ", p
->match
.addr
);
675 pr_cont("reg=0x%llx, val=0x%llx\n",
679 static void v4l_print_dv_timings(const void *arg
, bool write_only
)
681 const struct v4l2_dv_timings
*p
= arg
;
684 case V4L2_DV_BT_656_1120
:
685 pr_cont("type=bt-656/1120, interlaced=%u, "
687 "width=%u, height=%u, polarities=0x%x, "
688 "hfrontporch=%u, hsync=%u, "
689 "hbackporch=%u, vfrontporch=%u, "
690 "vsync=%u, vbackporch=%u, "
691 "il_vfrontporch=%u, il_vsync=%u, "
692 "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
);
703 pr_cont("type=%d\n", p
->type
);
708 static void v4l_print_enum_dv_timings(const void *arg
, bool write_only
)
710 const struct v4l2_enum_dv_timings
*p
= arg
;
712 pr_cont("index=%u, ", p
->index
);
713 v4l_print_dv_timings(&p
->timings
, write_only
);
716 static void v4l_print_dv_timings_cap(const void *arg
, bool write_only
)
718 const struct v4l2_dv_timings_cap
*p
= arg
;
721 case V4L2_DV_BT_656_1120
:
722 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, "
723 "pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
724 p
->bt
.min_width
, p
->bt
.max_width
,
725 p
->bt
.min_height
, p
->bt
.max_height
,
726 p
->bt
.min_pixelclock
, p
->bt
.max_pixelclock
,
727 p
->bt
.standards
, p
->bt
.capabilities
);
730 pr_cont("type=%u\n", p
->type
);
735 static void v4l_print_frmsizeenum(const void *arg
, bool write_only
)
737 const struct v4l2_frmsizeenum
*p
= arg
;
739 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u",
741 (p
->pixel_format
& 0xff),
742 (p
->pixel_format
>> 8) & 0xff,
743 (p
->pixel_format
>> 16) & 0xff,
744 (p
->pixel_format
>> 24) & 0xff,
747 case V4L2_FRMSIZE_TYPE_DISCRETE
:
748 pr_cont(", wxh=%ux%u\n",
749 p
->discrete
.width
, p
->discrete
.height
);
751 case V4L2_FRMSIZE_TYPE_STEPWISE
:
752 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n",
753 p
->stepwise
.min_width
, p
->stepwise
.min_height
,
754 p
->stepwise
.step_width
, p
->stepwise
.step_height
,
755 p
->stepwise
.max_width
, p
->stepwise
.max_height
);
757 case V4L2_FRMSIZE_TYPE_CONTINUOUS
:
765 static void v4l_print_frmivalenum(const void *arg
, bool write_only
)
767 const struct v4l2_frmivalenum
*p
= arg
;
769 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u",
771 (p
->pixel_format
& 0xff),
772 (p
->pixel_format
>> 8) & 0xff,
773 (p
->pixel_format
>> 16) & 0xff,
774 (p
->pixel_format
>> 24) & 0xff,
775 p
->width
, p
->height
, p
->type
);
777 case V4L2_FRMIVAL_TYPE_DISCRETE
:
778 pr_cont(", fps=%d/%d\n",
779 p
->discrete
.numerator
,
780 p
->discrete
.denominator
);
782 case V4L2_FRMIVAL_TYPE_STEPWISE
:
783 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n",
784 p
->stepwise
.min
.numerator
,
785 p
->stepwise
.min
.denominator
,
786 p
->stepwise
.max
.numerator
,
787 p
->stepwise
.max
.denominator
,
788 p
->stepwise
.step
.numerator
,
789 p
->stepwise
.step
.denominator
);
791 case V4L2_FRMIVAL_TYPE_CONTINUOUS
:
799 static void v4l_print_event(const void *arg
, bool write_only
)
801 const struct v4l2_event
*p
= arg
;
802 const struct v4l2_event_ctrl
*c
;
804 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, "
805 "timestamp=%lu.%9.9lu\n",
806 p
->type
, p
->pending
, p
->sequence
, p
->id
,
807 p
->timestamp
.tv_sec
, p
->timestamp
.tv_nsec
);
809 case V4L2_EVENT_VSYNC
:
810 printk(KERN_DEBUG
"field=%s\n",
811 prt_names(p
->u
.vsync
.field
, v4l2_field_names
));
813 case V4L2_EVENT_CTRL
:
815 printk(KERN_DEBUG
"changes=0x%x, type=%u, ",
816 c
->changes
, c
->type
);
817 if (c
->type
== V4L2_CTRL_TYPE_INTEGER64
)
818 pr_cont("value64=%lld, ", c
->value64
);
820 pr_cont("value=%d, ", c
->value
);
821 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, "
822 "default_value=%d\n",
823 c
->flags
, c
->minimum
, c
->maximum
,
824 c
->step
, c
->default_value
);
826 case V4L2_EVENT_FRAME_SYNC
:
827 pr_cont("frame_sequence=%u\n",
828 p
->u
.frame_sync
.frame_sequence
);
833 static void v4l_print_event_subscription(const void *arg
, bool write_only
)
835 const struct v4l2_event_subscription
*p
= arg
;
837 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
838 p
->type
, p
->id
, p
->flags
);
841 static void v4l_print_sliced_vbi_cap(const void *arg
, bool write_only
)
843 const struct v4l2_sliced_vbi_cap
*p
= arg
;
846 pr_cont("type=%s, service_set=0x%08x\n",
847 prt_names(p
->type
, v4l2_type_names
), p
->service_set
);
848 for (i
= 0; i
< 24; i
++)
849 printk(KERN_DEBUG
"line[%02u]=0x%04x, 0x%04x\n", i
,
850 p
->service_lines
[0][i
],
851 p
->service_lines
[1][i
]);
854 static void v4l_print_freq_band(const void *arg
, bool write_only
)
856 const struct v4l2_frequency_band
*p
= arg
;
858 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, "
859 "rangelow=%u, rangehigh=%u, modulation=0x%x\n",
860 p
->tuner
, p
->type
, p
->index
,
861 p
->capability
, p
->rangelow
,
862 p
->rangehigh
, p
->modulation
);
865 static void v4l_print_edid(const void *arg
, bool write_only
)
867 const struct v4l2_edid
*p
= arg
;
869 pr_cont("pad=%u, start_block=%u, blocks=%u\n",
870 p
->pad
, p
->start_block
, p
->blocks
);
873 static void v4l_print_u32(const void *arg
, bool write_only
)
875 pr_cont("value=%u\n", *(const u32
*)arg
);
878 static void v4l_print_newline(const void *arg
, bool write_only
)
883 static void v4l_print_default(const void *arg
, bool write_only
)
885 pr_cont("driver-specific ioctl\n");
888 static int check_ext_ctrls(struct v4l2_ext_controls
*c
, int allow_priv
)
892 /* zero the reserved fields */
893 c
->reserved
[0] = c
->reserved
[1] = 0;
894 for (i
= 0; i
< c
->count
; i
++)
895 c
->controls
[i
].reserved2
[0] = 0;
897 /* V4L2_CID_PRIVATE_BASE cannot be used as control class
898 when using extended controls.
899 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
900 is it allowed for backwards compatibility.
902 if (!allow_priv
&& c
->ctrl_class
== V4L2_CID_PRIVATE_BASE
)
904 if (c
->ctrl_class
== 0)
906 /* Check that all controls are from the same control class. */
907 for (i
= 0; i
< c
->count
; i
++) {
908 if (V4L2_CTRL_ID2CLASS(c
->controls
[i
].id
) != c
->ctrl_class
) {
916 static int check_fmt(struct file
*file
, enum v4l2_buf_type type
)
918 struct video_device
*vfd
= video_devdata(file
);
919 const struct v4l2_ioctl_ops
*ops
= vfd
->ioctl_ops
;
920 bool is_vid
= vfd
->vfl_type
== VFL_TYPE_GRABBER
;
921 bool is_vbi
= vfd
->vfl_type
== VFL_TYPE_VBI
;
922 bool is_sdr
= vfd
->vfl_type
== VFL_TYPE_SDR
;
923 bool is_rx
= vfd
->vfl_dir
!= VFL_DIR_TX
;
924 bool is_tx
= vfd
->vfl_dir
!= VFL_DIR_RX
;
930 case V4L2_BUF_TYPE_VIDEO_CAPTURE
:
931 if (is_vid
&& is_rx
&&
932 (ops
->vidioc_g_fmt_vid_cap
|| ops
->vidioc_g_fmt_vid_cap_mplane
))
935 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE
:
936 if (is_vid
&& is_rx
&& ops
->vidioc_g_fmt_vid_cap_mplane
)
939 case V4L2_BUF_TYPE_VIDEO_OVERLAY
:
940 if (is_vid
&& is_rx
&& ops
->vidioc_g_fmt_vid_overlay
)
943 case V4L2_BUF_TYPE_VIDEO_OUTPUT
:
944 if (is_vid
&& is_tx
&&
945 (ops
->vidioc_g_fmt_vid_out
|| ops
->vidioc_g_fmt_vid_out_mplane
))
948 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE
:
949 if (is_vid
&& is_tx
&& ops
->vidioc_g_fmt_vid_out_mplane
)
952 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
:
953 if (is_vid
&& is_tx
&& ops
->vidioc_g_fmt_vid_out_overlay
)
956 case V4L2_BUF_TYPE_VBI_CAPTURE
:
957 if (is_vbi
&& is_rx
&& ops
->vidioc_g_fmt_vbi_cap
)
960 case V4L2_BUF_TYPE_VBI_OUTPUT
:
961 if (is_vbi
&& is_tx
&& ops
->vidioc_g_fmt_vbi_out
)
964 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE
:
965 if (is_vbi
&& is_rx
&& ops
->vidioc_g_fmt_sliced_vbi_cap
)
968 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT
:
969 if (is_vbi
&& is_tx
&& ops
->vidioc_g_fmt_sliced_vbi_out
)
972 case V4L2_BUF_TYPE_SDR_CAPTURE
:
973 if (is_sdr
&& is_rx
&& ops
->vidioc_g_fmt_sdr_cap
)
982 static void v4l_sanitize_format(struct v4l2_format
*fmt
)
987 * The v4l2_pix_format structure has been extended with fields that were
988 * not previously required to be set to zero by applications. The priv
989 * field, when set to a magic value, indicates the the extended fields
990 * are valid. Otherwise they will contain undefined values. To simplify
991 * the API towards drivers zero the extended fields and set the priv
992 * field to the magic value when the extended pixel format structure
993 * isn't used by applications.
996 if (fmt
->type
!= V4L2_BUF_TYPE_VIDEO_CAPTURE
&&
997 fmt
->type
!= V4L2_BUF_TYPE_VIDEO_OUTPUT
)
1000 if (fmt
->fmt
.pix
.priv
== V4L2_PIX_FMT_PRIV_MAGIC
)
1003 fmt
->fmt
.pix
.priv
= V4L2_PIX_FMT_PRIV_MAGIC
;
1005 offset
= offsetof(struct v4l2_pix_format
, priv
)
1006 + sizeof(fmt
->fmt
.pix
.priv
);
1007 memset(((void *)&fmt
->fmt
.pix
) + offset
, 0,
1008 sizeof(fmt
->fmt
.pix
) - offset
);
1011 static int v4l_querycap(const struct v4l2_ioctl_ops
*ops
,
1012 struct file
*file
, void *fh
, void *arg
)
1014 struct v4l2_capability
*cap
= (struct v4l2_capability
*)arg
;
1017 cap
->version
= LINUX_VERSION_CODE
;
1019 ret
= ops
->vidioc_querycap(file
, fh
, cap
);
1021 cap
->capabilities
|= V4L2_CAP_EXT_PIX_FORMAT
;
1023 * Drivers MUST fill in device_caps, so check for this and
1024 * warn if it was forgotten.
1026 WARN_ON(!(cap
->capabilities
& V4L2_CAP_DEVICE_CAPS
) ||
1028 cap
->device_caps
|= V4L2_CAP_EXT_PIX_FORMAT
;
1033 static int v4l_s_input(const struct v4l2_ioctl_ops
*ops
,
1034 struct file
*file
, void *fh
, void *arg
)
1036 return ops
->vidioc_s_input(file
, fh
, *(unsigned int *)arg
);
1039 static int v4l_s_output(const struct v4l2_ioctl_ops
*ops
,
1040 struct file
*file
, void *fh
, void *arg
)
1042 return ops
->vidioc_s_output(file
, fh
, *(unsigned int *)arg
);
1045 static int v4l_g_priority(const struct v4l2_ioctl_ops
*ops
,
1046 struct file
*file
, void *fh
, void *arg
)
1048 struct video_device
*vfd
;
1051 vfd
= video_devdata(file
);
1052 *p
= v4l2_prio_max(vfd
->prio
);
1056 static int v4l_s_priority(const struct v4l2_ioctl_ops
*ops
,
1057 struct file
*file
, void *fh
, void *arg
)
1059 struct video_device
*vfd
;
1060 struct v4l2_fh
*vfh
;
1063 vfd
= video_devdata(file
);
1064 if (!test_bit(V4L2_FL_USES_V4L2_FH
, &vfd
->flags
))
1066 vfh
= file
->private_data
;
1067 return v4l2_prio_change(vfd
->prio
, &vfh
->prio
, *p
);
1070 static int v4l_enuminput(const struct v4l2_ioctl_ops
*ops
,
1071 struct file
*file
, void *fh
, void *arg
)
1073 struct video_device
*vfd
= video_devdata(file
);
1074 struct v4l2_input
*p
= arg
;
1077 * We set the flags for CAP_DV_TIMINGS &
1078 * CAP_STD here based on ioctl handler provided by the
1079 * driver. If the driver doesn't support these
1080 * for a specific input, it must override these flags.
1082 if (is_valid_ioctl(vfd
, VIDIOC_S_STD
))
1083 p
->capabilities
|= V4L2_IN_CAP_STD
;
1085 return ops
->vidioc_enum_input(file
, fh
, p
);
1088 static int v4l_enumoutput(const struct v4l2_ioctl_ops
*ops
,
1089 struct file
*file
, void *fh
, void *arg
)
1091 struct video_device
*vfd
= video_devdata(file
);
1092 struct v4l2_output
*p
= arg
;
1095 * We set the flags for CAP_DV_TIMINGS &
1096 * CAP_STD here based on ioctl handler provided by the
1097 * driver. If the driver doesn't support these
1098 * for a specific output, it must override these flags.
1100 if (is_valid_ioctl(vfd
, VIDIOC_S_STD
))
1101 p
->capabilities
|= V4L2_OUT_CAP_STD
;
1103 return ops
->vidioc_enum_output(file
, fh
, p
);
1106 static int v4l_enum_fmt(const struct v4l2_ioctl_ops
*ops
,
1107 struct file
*file
, void *fh
, void *arg
)
1109 struct v4l2_fmtdesc
*p
= arg
;
1110 struct video_device
*vfd
= video_devdata(file
);
1111 bool is_vid
= vfd
->vfl_type
== VFL_TYPE_GRABBER
;
1112 bool is_sdr
= vfd
->vfl_type
== VFL_TYPE_SDR
;
1113 bool is_rx
= vfd
->vfl_dir
!= VFL_DIR_TX
;
1114 bool is_tx
= vfd
->vfl_dir
!= VFL_DIR_RX
;
1117 case V4L2_BUF_TYPE_VIDEO_CAPTURE
:
1118 if (unlikely(!is_rx
|| !is_vid
|| !ops
->vidioc_enum_fmt_vid_cap
))
1120 return ops
->vidioc_enum_fmt_vid_cap(file
, fh
, arg
);
1121 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE
:
1122 if (unlikely(!is_rx
|| !is_vid
|| !ops
->vidioc_enum_fmt_vid_cap_mplane
))
1124 return ops
->vidioc_enum_fmt_vid_cap_mplane(file
, fh
, arg
);
1125 case V4L2_BUF_TYPE_VIDEO_OVERLAY
:
1126 if (unlikely(!is_rx
|| !is_vid
|| !ops
->vidioc_enum_fmt_vid_overlay
))
1128 return ops
->vidioc_enum_fmt_vid_overlay(file
, fh
, arg
);
1129 case V4L2_BUF_TYPE_VIDEO_OUTPUT
:
1130 if (unlikely(!is_tx
|| !is_vid
|| !ops
->vidioc_enum_fmt_vid_out
))
1132 return ops
->vidioc_enum_fmt_vid_out(file
, fh
, arg
);
1133 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE
:
1134 if (unlikely(!is_tx
|| !is_vid
|| !ops
->vidioc_enum_fmt_vid_out_mplane
))
1136 return ops
->vidioc_enum_fmt_vid_out_mplane(file
, fh
, arg
);
1137 case V4L2_BUF_TYPE_SDR_CAPTURE
:
1138 if (unlikely(!is_rx
|| !is_sdr
|| !ops
->vidioc_enum_fmt_sdr_cap
))
1140 return ops
->vidioc_enum_fmt_sdr_cap(file
, fh
, arg
);
1145 static int v4l_g_fmt(const struct v4l2_ioctl_ops
*ops
,
1146 struct file
*file
, void *fh
, void *arg
)
1148 struct v4l2_format
*p
= arg
;
1149 struct video_device
*vfd
= video_devdata(file
);
1150 bool is_vid
= vfd
->vfl_type
== VFL_TYPE_GRABBER
;
1151 bool is_sdr
= vfd
->vfl_type
== VFL_TYPE_SDR
;
1152 bool is_rx
= vfd
->vfl_dir
!= VFL_DIR_TX
;
1153 bool is_tx
= vfd
->vfl_dir
!= VFL_DIR_RX
;
1157 * fmt can't be cleared for these overlay types due to the 'clips'
1158 * 'clipcount' and 'bitmap' pointers in struct v4l2_window.
1159 * Those are provided by the user. So handle these two overlay types
1160 * first, and then just do a simple memset for the other types.
1163 case V4L2_BUF_TYPE_VIDEO_OVERLAY
:
1164 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
: {
1165 struct v4l2_clip __user
*clips
= p
->fmt
.win
.clips
;
1166 u32 clipcount
= p
->fmt
.win
.clipcount
;
1167 void __user
*bitmap
= p
->fmt
.win
.bitmap
;
1169 memset(&p
->fmt
, 0, sizeof(p
->fmt
));
1170 p
->fmt
.win
.clips
= clips
;
1171 p
->fmt
.win
.clipcount
= clipcount
;
1172 p
->fmt
.win
.bitmap
= bitmap
;
1176 memset(&p
->fmt
, 0, sizeof(p
->fmt
));
1181 case V4L2_BUF_TYPE_VIDEO_CAPTURE
:
1182 if (unlikely(!is_rx
|| !is_vid
|| !ops
->vidioc_g_fmt_vid_cap
))
1184 p
->fmt
.pix
.priv
= V4L2_PIX_FMT_PRIV_MAGIC
;
1185 ret
= ops
->vidioc_g_fmt_vid_cap(file
, fh
, arg
);
1186 /* just in case the driver zeroed it again */
1187 p
->fmt
.pix
.priv
= V4L2_PIX_FMT_PRIV_MAGIC
;
1189 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE
:
1190 if (unlikely(!is_rx
|| !is_vid
|| !ops
->vidioc_g_fmt_vid_cap_mplane
))
1192 return ops
->vidioc_g_fmt_vid_cap_mplane(file
, fh
, arg
);
1193 case V4L2_BUF_TYPE_VIDEO_OVERLAY
:
1194 if (unlikely(!is_rx
|| !is_vid
|| !ops
->vidioc_g_fmt_vid_overlay
))
1196 return ops
->vidioc_g_fmt_vid_overlay(file
, fh
, arg
);
1197 case V4L2_BUF_TYPE_VBI_CAPTURE
:
1198 if (unlikely(!is_rx
|| is_vid
|| !ops
->vidioc_g_fmt_vbi_cap
))
1200 return ops
->vidioc_g_fmt_vbi_cap(file
, fh
, arg
);
1201 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE
:
1202 if (unlikely(!is_rx
|| is_vid
|| !ops
->vidioc_g_fmt_sliced_vbi_cap
))
1204 return ops
->vidioc_g_fmt_sliced_vbi_cap(file
, fh
, arg
);
1205 case V4L2_BUF_TYPE_VIDEO_OUTPUT
:
1206 if (unlikely(!is_tx
|| !is_vid
|| !ops
->vidioc_g_fmt_vid_out
))
1208 p
->fmt
.pix
.priv
= V4L2_PIX_FMT_PRIV_MAGIC
;
1209 ret
= ops
->vidioc_g_fmt_vid_out(file
, fh
, arg
);
1210 /* just in case the driver zeroed it again */
1211 p
->fmt
.pix
.priv
= V4L2_PIX_FMT_PRIV_MAGIC
;
1213 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE
:
1214 if (unlikely(!is_tx
|| !is_vid
|| !ops
->vidioc_g_fmt_vid_out_mplane
))
1216 return ops
->vidioc_g_fmt_vid_out_mplane(file
, fh
, arg
);
1217 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
:
1218 if (unlikely(!is_tx
|| !is_vid
|| !ops
->vidioc_g_fmt_vid_out_overlay
))
1220 return ops
->vidioc_g_fmt_vid_out_overlay(file
, fh
, arg
);
1221 case V4L2_BUF_TYPE_VBI_OUTPUT
:
1222 if (unlikely(!is_tx
|| is_vid
|| !ops
->vidioc_g_fmt_vbi_out
))
1224 return ops
->vidioc_g_fmt_vbi_out(file
, fh
, arg
);
1225 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT
:
1226 if (unlikely(!is_tx
|| is_vid
|| !ops
->vidioc_g_fmt_sliced_vbi_out
))
1228 return ops
->vidioc_g_fmt_sliced_vbi_out(file
, fh
, arg
);
1229 case V4L2_BUF_TYPE_SDR_CAPTURE
:
1230 if (unlikely(!is_rx
|| !is_sdr
|| !ops
->vidioc_g_fmt_sdr_cap
))
1232 return ops
->vidioc_g_fmt_sdr_cap(file
, fh
, arg
);
1237 static int v4l_s_fmt(const struct v4l2_ioctl_ops
*ops
,
1238 struct file
*file
, void *fh
, void *arg
)
1240 struct v4l2_format
*p
= arg
;
1241 struct video_device
*vfd
= video_devdata(file
);
1242 bool is_vid
= vfd
->vfl_type
== VFL_TYPE_GRABBER
;
1243 bool is_sdr
= vfd
->vfl_type
== VFL_TYPE_SDR
;
1244 bool is_rx
= vfd
->vfl_dir
!= VFL_DIR_TX
;
1245 bool is_tx
= vfd
->vfl_dir
!= VFL_DIR_RX
;
1248 v4l_sanitize_format(p
);
1251 case V4L2_BUF_TYPE_VIDEO_CAPTURE
:
1252 if (unlikely(!is_rx
|| !is_vid
|| !ops
->vidioc_s_fmt_vid_cap
))
1254 CLEAR_AFTER_FIELD(p
, fmt
.pix
);
1255 ret
= ops
->vidioc_s_fmt_vid_cap(file
, fh
, arg
);
1256 /* just in case the driver zeroed it again */
1257 p
->fmt
.pix
.priv
= V4L2_PIX_FMT_PRIV_MAGIC
;
1259 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE
:
1260 if (unlikely(!is_rx
|| !is_vid
|| !ops
->vidioc_s_fmt_vid_cap_mplane
))
1262 CLEAR_AFTER_FIELD(p
, fmt
.pix_mp
);
1263 return ops
->vidioc_s_fmt_vid_cap_mplane(file
, fh
, arg
);
1264 case V4L2_BUF_TYPE_VIDEO_OVERLAY
:
1265 if (unlikely(!is_rx
|| !is_vid
|| !ops
->vidioc_s_fmt_vid_overlay
))
1267 CLEAR_AFTER_FIELD(p
, fmt
.win
);
1268 return ops
->vidioc_s_fmt_vid_overlay(file
, fh
, arg
);
1269 case V4L2_BUF_TYPE_VBI_CAPTURE
:
1270 if (unlikely(!is_rx
|| is_vid
|| !ops
->vidioc_s_fmt_vbi_cap
))
1272 CLEAR_AFTER_FIELD(p
, fmt
.vbi
);
1273 return ops
->vidioc_s_fmt_vbi_cap(file
, fh
, arg
);
1274 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE
:
1275 if (unlikely(!is_rx
|| is_vid
|| !ops
->vidioc_s_fmt_sliced_vbi_cap
))
1277 CLEAR_AFTER_FIELD(p
, fmt
.sliced
);
1278 return ops
->vidioc_s_fmt_sliced_vbi_cap(file
, fh
, arg
);
1279 case V4L2_BUF_TYPE_VIDEO_OUTPUT
:
1280 if (unlikely(!is_tx
|| !is_vid
|| !ops
->vidioc_s_fmt_vid_out
))
1282 CLEAR_AFTER_FIELD(p
, fmt
.pix
);
1283 ret
= ops
->vidioc_s_fmt_vid_out(file
, fh
, arg
);
1284 /* just in case the driver zeroed it again */
1285 p
->fmt
.pix
.priv
= V4L2_PIX_FMT_PRIV_MAGIC
;
1287 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE
:
1288 if (unlikely(!is_tx
|| !is_vid
|| !ops
->vidioc_s_fmt_vid_out_mplane
))
1290 CLEAR_AFTER_FIELD(p
, fmt
.pix_mp
);
1291 return ops
->vidioc_s_fmt_vid_out_mplane(file
, fh
, arg
);
1292 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
:
1293 if (unlikely(!is_tx
|| !is_vid
|| !ops
->vidioc_s_fmt_vid_out_overlay
))
1295 CLEAR_AFTER_FIELD(p
, fmt
.win
);
1296 return ops
->vidioc_s_fmt_vid_out_overlay(file
, fh
, arg
);
1297 case V4L2_BUF_TYPE_VBI_OUTPUT
:
1298 if (unlikely(!is_tx
|| is_vid
|| !ops
->vidioc_s_fmt_vbi_out
))
1300 CLEAR_AFTER_FIELD(p
, fmt
.vbi
);
1301 return ops
->vidioc_s_fmt_vbi_out(file
, fh
, arg
);
1302 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT
:
1303 if (unlikely(!is_tx
|| is_vid
|| !ops
->vidioc_s_fmt_sliced_vbi_out
))
1305 CLEAR_AFTER_FIELD(p
, fmt
.sliced
);
1306 return ops
->vidioc_s_fmt_sliced_vbi_out(file
, fh
, arg
);
1307 case V4L2_BUF_TYPE_SDR_CAPTURE
:
1308 if (unlikely(!is_rx
|| !is_sdr
|| !ops
->vidioc_s_fmt_sdr_cap
))
1310 CLEAR_AFTER_FIELD(p
, fmt
.sdr
);
1311 return ops
->vidioc_s_fmt_sdr_cap(file
, fh
, arg
);
1316 static int v4l_try_fmt(const struct v4l2_ioctl_ops
*ops
,
1317 struct file
*file
, void *fh
, void *arg
)
1319 struct v4l2_format
*p
= arg
;
1320 struct video_device
*vfd
= video_devdata(file
);
1321 bool is_vid
= vfd
->vfl_type
== VFL_TYPE_GRABBER
;
1322 bool is_sdr
= vfd
->vfl_type
== VFL_TYPE_SDR
;
1323 bool is_rx
= vfd
->vfl_dir
!= VFL_DIR_TX
;
1324 bool is_tx
= vfd
->vfl_dir
!= VFL_DIR_RX
;
1327 v4l_sanitize_format(p
);
1330 case V4L2_BUF_TYPE_VIDEO_CAPTURE
:
1331 if (unlikely(!is_rx
|| !is_vid
|| !ops
->vidioc_try_fmt_vid_cap
))
1333 CLEAR_AFTER_FIELD(p
, fmt
.pix
);
1334 ret
= ops
->vidioc_try_fmt_vid_cap(file
, fh
, arg
);
1335 /* just in case the driver zeroed it again */
1336 p
->fmt
.pix
.priv
= V4L2_PIX_FMT_PRIV_MAGIC
;
1338 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE
:
1339 if (unlikely(!is_rx
|| !is_vid
|| !ops
->vidioc_try_fmt_vid_cap_mplane
))
1341 CLEAR_AFTER_FIELD(p
, fmt
.pix_mp
);
1342 return ops
->vidioc_try_fmt_vid_cap_mplane(file
, fh
, arg
);
1343 case V4L2_BUF_TYPE_VIDEO_OVERLAY
:
1344 if (unlikely(!is_rx
|| !is_vid
|| !ops
->vidioc_try_fmt_vid_overlay
))
1346 CLEAR_AFTER_FIELD(p
, fmt
.win
);
1347 return ops
->vidioc_try_fmt_vid_overlay(file
, fh
, arg
);
1348 case V4L2_BUF_TYPE_VBI_CAPTURE
:
1349 if (unlikely(!is_rx
|| is_vid
|| !ops
->vidioc_try_fmt_vbi_cap
))
1351 CLEAR_AFTER_FIELD(p
, fmt
.vbi
);
1352 return ops
->vidioc_try_fmt_vbi_cap(file
, fh
, arg
);
1353 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE
:
1354 if (unlikely(!is_rx
|| is_vid
|| !ops
->vidioc_try_fmt_sliced_vbi_cap
))
1356 CLEAR_AFTER_FIELD(p
, fmt
.sliced
);
1357 return ops
->vidioc_try_fmt_sliced_vbi_cap(file
, fh
, arg
);
1358 case V4L2_BUF_TYPE_VIDEO_OUTPUT
:
1359 if (unlikely(!is_tx
|| !is_vid
|| !ops
->vidioc_try_fmt_vid_out
))
1361 CLEAR_AFTER_FIELD(p
, fmt
.pix
);
1362 ret
= ops
->vidioc_try_fmt_vid_out(file
, fh
, arg
);
1363 /* just in case the driver zeroed it again */
1364 p
->fmt
.pix
.priv
= V4L2_PIX_FMT_PRIV_MAGIC
;
1366 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE
:
1367 if (unlikely(!is_tx
|| !is_vid
|| !ops
->vidioc_try_fmt_vid_out_mplane
))
1369 CLEAR_AFTER_FIELD(p
, fmt
.pix_mp
);
1370 return ops
->vidioc_try_fmt_vid_out_mplane(file
, fh
, arg
);
1371 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY
:
1372 if (unlikely(!is_tx
|| !is_vid
|| !ops
->vidioc_try_fmt_vid_out_overlay
))
1374 CLEAR_AFTER_FIELD(p
, fmt
.win
);
1375 return ops
->vidioc_try_fmt_vid_out_overlay(file
, fh
, arg
);
1376 case V4L2_BUF_TYPE_VBI_OUTPUT
:
1377 if (unlikely(!is_tx
|| is_vid
|| !ops
->vidioc_try_fmt_vbi_out
))
1379 CLEAR_AFTER_FIELD(p
, fmt
.vbi
);
1380 return ops
->vidioc_try_fmt_vbi_out(file
, fh
, arg
);
1381 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT
:
1382 if (unlikely(!is_tx
|| is_vid
|| !ops
->vidioc_try_fmt_sliced_vbi_out
))
1384 CLEAR_AFTER_FIELD(p
, fmt
.sliced
);
1385 return ops
->vidioc_try_fmt_sliced_vbi_out(file
, fh
, arg
);
1386 case V4L2_BUF_TYPE_SDR_CAPTURE
:
1387 if (unlikely(!is_rx
|| !is_sdr
|| !ops
->vidioc_try_fmt_sdr_cap
))
1389 CLEAR_AFTER_FIELD(p
, fmt
.sdr
);
1390 return ops
->vidioc_try_fmt_sdr_cap(file
, fh
, arg
);
1395 static int v4l_streamon(const struct v4l2_ioctl_ops
*ops
,
1396 struct file
*file
, void *fh
, void *arg
)
1398 return ops
->vidioc_streamon(file
, fh
, *(unsigned int *)arg
);
1401 static int v4l_streamoff(const struct v4l2_ioctl_ops
*ops
,
1402 struct file
*file
, void *fh
, void *arg
)
1404 return ops
->vidioc_streamoff(file
, fh
, *(unsigned int *)arg
);
1407 static int v4l_g_tuner(const struct v4l2_ioctl_ops
*ops
,
1408 struct file
*file
, void *fh
, void *arg
)
1410 struct video_device
*vfd
= video_devdata(file
);
1411 struct v4l2_tuner
*p
= arg
;
1414 p
->type
= (vfd
->vfl_type
== VFL_TYPE_RADIO
) ?
1415 V4L2_TUNER_RADIO
: V4L2_TUNER_ANALOG_TV
;
1416 err
= ops
->vidioc_g_tuner(file
, fh
, p
);
1418 p
->capability
|= V4L2_TUNER_CAP_FREQ_BANDS
;
1422 static int v4l_s_tuner(const struct v4l2_ioctl_ops
*ops
,
1423 struct file
*file
, void *fh
, void *arg
)
1425 struct video_device
*vfd
= video_devdata(file
);
1426 struct v4l2_tuner
*p
= arg
;
1428 p
->type
= (vfd
->vfl_type
== VFL_TYPE_RADIO
) ?
1429 V4L2_TUNER_RADIO
: V4L2_TUNER_ANALOG_TV
;
1430 return ops
->vidioc_s_tuner(file
, fh
, p
);
1433 static int v4l_g_modulator(const struct v4l2_ioctl_ops
*ops
,
1434 struct file
*file
, void *fh
, void *arg
)
1436 struct v4l2_modulator
*p
= arg
;
1439 err
= ops
->vidioc_g_modulator(file
, fh
, p
);
1441 p
->capability
|= V4L2_TUNER_CAP_FREQ_BANDS
;
1445 static int v4l_g_frequency(const struct v4l2_ioctl_ops
*ops
,
1446 struct file
*file
, void *fh
, void *arg
)
1448 struct video_device
*vfd
= video_devdata(file
);
1449 struct v4l2_frequency
*p
= arg
;
1451 if (vfd
->vfl_type
== VFL_TYPE_SDR
)
1452 p
->type
= V4L2_TUNER_ADC
;
1454 p
->type
= (vfd
->vfl_type
== VFL_TYPE_RADIO
) ?
1455 V4L2_TUNER_RADIO
: V4L2_TUNER_ANALOG_TV
;
1456 return ops
->vidioc_g_frequency(file
, fh
, p
);
1459 static int v4l_s_frequency(const struct v4l2_ioctl_ops
*ops
,
1460 struct file
*file
, void *fh
, void *arg
)
1462 struct video_device
*vfd
= video_devdata(file
);
1463 const struct v4l2_frequency
*p
= arg
;
1464 enum v4l2_tuner_type type
;
1466 if (vfd
->vfl_type
== VFL_TYPE_SDR
) {
1467 if (p
->type
!= V4L2_TUNER_ADC
&& p
->type
!= V4L2_TUNER_RF
)
1470 type
= (vfd
->vfl_type
== VFL_TYPE_RADIO
) ?
1471 V4L2_TUNER_RADIO
: V4L2_TUNER_ANALOG_TV
;
1472 if (type
!= p
->type
)
1475 return ops
->vidioc_s_frequency(file
, fh
, p
);
1478 static int v4l_enumstd(const struct v4l2_ioctl_ops
*ops
,
1479 struct file
*file
, void *fh
, void *arg
)
1481 struct video_device
*vfd
= video_devdata(file
);
1482 struct v4l2_standard
*p
= arg
;
1483 v4l2_std_id id
= vfd
->tvnorms
, curr_id
= 0;
1484 unsigned int index
= p
->index
, i
, j
= 0;
1485 const char *descr
= "";
1487 /* Return -ENODATA if the tvnorms for the current input
1488 or output is 0, meaning that it doesn't support this API. */
1492 /* Return norm array in a canonical way */
1493 for (i
= 0; i
<= index
&& id
; i
++) {
1494 /* last std value in the standards array is 0, so this
1495 while always ends there since (id & 0) == 0. */
1496 while ((id
& standards
[j
].std
) != standards
[j
].std
)
1498 curr_id
= standards
[j
].std
;
1499 descr
= standards
[j
].descr
;
1503 if (curr_id
!= V4L2_STD_PAL
&&
1504 curr_id
!= V4L2_STD_SECAM
&&
1505 curr_id
!= V4L2_STD_NTSC
)
1511 v4l2_video_std_construct(p
, curr_id
, descr
);
1515 static int v4l_s_std(const struct v4l2_ioctl_ops
*ops
,
1516 struct file
*file
, void *fh
, void *arg
)
1518 struct video_device
*vfd
= video_devdata(file
);
1519 v4l2_std_id id
= *(v4l2_std_id
*)arg
, norm
;
1521 norm
= id
& vfd
->tvnorms
;
1522 if (vfd
->tvnorms
&& !norm
) /* Check if std is supported */
1525 /* Calls the specific handler */
1526 return ops
->vidioc_s_std(file
, fh
, norm
);
1529 static int v4l_querystd(const struct v4l2_ioctl_ops
*ops
,
1530 struct file
*file
, void *fh
, void *arg
)
1532 struct video_device
*vfd
= video_devdata(file
);
1533 v4l2_std_id
*p
= arg
;
1536 * If no signal is detected, then the driver should return
1537 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with
1538 * any standards that do not apply removed.
1540 * This means that tuners, audio and video decoders can join
1541 * their efforts to improve the standards detection.
1544 return ops
->vidioc_querystd(file
, fh
, arg
);
1547 static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops
*ops
,
1548 struct file
*file
, void *fh
, void *arg
)
1550 struct video_device
*vfd
= video_devdata(file
);
1551 struct v4l2_hw_freq_seek
*p
= arg
;
1552 enum v4l2_tuner_type type
;
1554 /* s_hw_freq_seek is not supported for SDR for now */
1555 if (vfd
->vfl_type
== VFL_TYPE_SDR
)
1558 type
= (vfd
->vfl_type
== VFL_TYPE_RADIO
) ?
1559 V4L2_TUNER_RADIO
: V4L2_TUNER_ANALOG_TV
;
1560 if (p
->type
!= type
)
1562 return ops
->vidioc_s_hw_freq_seek(file
, fh
, p
);
1565 static int v4l_overlay(const struct v4l2_ioctl_ops
*ops
,
1566 struct file
*file
, void *fh
, void *arg
)
1568 return ops
->vidioc_overlay(file
, fh
, *(unsigned int *)arg
);
1571 static int v4l_reqbufs(const struct v4l2_ioctl_ops
*ops
,
1572 struct file
*file
, void *fh
, void *arg
)
1574 struct v4l2_requestbuffers
*p
= arg
;
1575 int ret
= check_fmt(file
, p
->type
);
1580 CLEAR_AFTER_FIELD(p
, memory
);
1582 return ops
->vidioc_reqbufs(file
, fh
, p
);
1585 static int v4l_querybuf(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_querybuf(file
, fh
, p
);
1594 static int v4l_qbuf(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_qbuf(file
, fh
, p
);
1603 static int v4l_dqbuf(const struct v4l2_ioctl_ops
*ops
,
1604 struct file
*file
, void *fh
, void *arg
)
1606 struct v4l2_buffer
*p
= arg
;
1607 int ret
= check_fmt(file
, p
->type
);
1609 return ret
? ret
: ops
->vidioc_dqbuf(file
, fh
, p
);
1612 static int v4l_create_bufs(const struct v4l2_ioctl_ops
*ops
,
1613 struct file
*file
, void *fh
, void *arg
)
1615 struct v4l2_create_buffers
*create
= arg
;
1616 int ret
= check_fmt(file
, create
->format
.type
);
1621 v4l_sanitize_format(&create
->format
);
1623 ret
= ops
->vidioc_create_bufs(file
, fh
, create
);
1625 if (create
->format
.type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
||
1626 create
->format
.type
== V4L2_BUF_TYPE_VIDEO_OUTPUT
)
1627 create
->format
.fmt
.pix
.priv
= V4L2_PIX_FMT_PRIV_MAGIC
;
1632 static int v4l_prepare_buf(const struct v4l2_ioctl_ops
*ops
,
1633 struct file
*file
, void *fh
, void *arg
)
1635 struct v4l2_buffer
*b
= arg
;
1636 int ret
= check_fmt(file
, b
->type
);
1638 return ret
? ret
: ops
->vidioc_prepare_buf(file
, fh
, b
);
1641 static int v4l_g_parm(const struct v4l2_ioctl_ops
*ops
,
1642 struct file
*file
, void *fh
, void *arg
)
1644 struct v4l2_streamparm
*p
= arg
;
1646 int ret
= check_fmt(file
, p
->type
);
1650 if (ops
->vidioc_g_parm
)
1651 return ops
->vidioc_g_parm(file
, fh
, p
);
1652 if (p
->type
!= V4L2_BUF_TYPE_VIDEO_CAPTURE
&&
1653 p
->type
!= V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE
)
1655 p
->parm
.capture
.readbuffers
= 2;
1656 ret
= ops
->vidioc_g_std(file
, fh
, &std
);
1658 v4l2_video_std_frame_period(std
, &p
->parm
.capture
.timeperframe
);
1662 static int v4l_s_parm(const struct v4l2_ioctl_ops
*ops
,
1663 struct file
*file
, void *fh
, void *arg
)
1665 struct v4l2_streamparm
*p
= arg
;
1666 int ret
= check_fmt(file
, p
->type
);
1668 return ret
? ret
: ops
->vidioc_s_parm(file
, fh
, p
);
1671 static int v4l_queryctrl(const struct v4l2_ioctl_ops
*ops
,
1672 struct file
*file
, void *fh
, void *arg
)
1674 struct video_device
*vfd
= video_devdata(file
);
1675 struct v4l2_queryctrl
*p
= arg
;
1676 struct v4l2_fh
*vfh
=
1677 test_bit(V4L2_FL_USES_V4L2_FH
, &vfd
->flags
) ? fh
: NULL
;
1679 if (vfh
&& vfh
->ctrl_handler
)
1680 return v4l2_queryctrl(vfh
->ctrl_handler
, p
);
1681 if (vfd
->ctrl_handler
)
1682 return v4l2_queryctrl(vfd
->ctrl_handler
, p
);
1683 if (ops
->vidioc_queryctrl
)
1684 return ops
->vidioc_queryctrl(file
, fh
, p
);
1688 static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops
*ops
,
1689 struct file
*file
, void *fh
, void *arg
)
1691 struct video_device
*vfd
= video_devdata(file
);
1692 struct v4l2_query_ext_ctrl
*p
= arg
;
1693 struct v4l2_fh
*vfh
=
1694 test_bit(V4L2_FL_USES_V4L2_FH
, &vfd
->flags
) ? fh
: NULL
;
1696 if (vfh
&& vfh
->ctrl_handler
)
1697 return v4l2_query_ext_ctrl(vfh
->ctrl_handler
, p
);
1698 if (vfd
->ctrl_handler
)
1699 return v4l2_query_ext_ctrl(vfd
->ctrl_handler
, p
);
1700 if (ops
->vidioc_query_ext_ctrl
)
1701 return ops
->vidioc_query_ext_ctrl(file
, fh
, p
);
1705 static int v4l_querymenu(const struct v4l2_ioctl_ops
*ops
,
1706 struct file
*file
, void *fh
, void *arg
)
1708 struct video_device
*vfd
= video_devdata(file
);
1709 struct v4l2_querymenu
*p
= arg
;
1710 struct v4l2_fh
*vfh
=
1711 test_bit(V4L2_FL_USES_V4L2_FH
, &vfd
->flags
) ? fh
: NULL
;
1713 if (vfh
&& vfh
->ctrl_handler
)
1714 return v4l2_querymenu(vfh
->ctrl_handler
, p
);
1715 if (vfd
->ctrl_handler
)
1716 return v4l2_querymenu(vfd
->ctrl_handler
, p
);
1717 if (ops
->vidioc_querymenu
)
1718 return ops
->vidioc_querymenu(file
, fh
, p
);
1722 static int v4l_g_ctrl(const struct v4l2_ioctl_ops
*ops
,
1723 struct file
*file
, void *fh
, void *arg
)
1725 struct video_device
*vfd
= video_devdata(file
);
1726 struct v4l2_control
*p
= arg
;
1727 struct v4l2_fh
*vfh
=
1728 test_bit(V4L2_FL_USES_V4L2_FH
, &vfd
->flags
) ? fh
: NULL
;
1729 struct v4l2_ext_controls ctrls
;
1730 struct v4l2_ext_control ctrl
;
1732 if (vfh
&& vfh
->ctrl_handler
)
1733 return v4l2_g_ctrl(vfh
->ctrl_handler
, p
);
1734 if (vfd
->ctrl_handler
)
1735 return v4l2_g_ctrl(vfd
->ctrl_handler
, p
);
1736 if (ops
->vidioc_g_ctrl
)
1737 return ops
->vidioc_g_ctrl(file
, fh
, p
);
1738 if (ops
->vidioc_g_ext_ctrls
== NULL
)
1741 ctrls
.ctrl_class
= V4L2_CTRL_ID2CLASS(p
->id
);
1743 ctrls
.controls
= &ctrl
;
1745 ctrl
.value
= p
->value
;
1746 if (check_ext_ctrls(&ctrls
, 1)) {
1747 int ret
= ops
->vidioc_g_ext_ctrls(file
, fh
, &ctrls
);
1750 p
->value
= ctrl
.value
;
1756 static int v4l_s_ctrl(const struct v4l2_ioctl_ops
*ops
,
1757 struct file
*file
, void *fh
, void *arg
)
1759 struct video_device
*vfd
= video_devdata(file
);
1760 struct v4l2_control
*p
= arg
;
1761 struct v4l2_fh
*vfh
=
1762 test_bit(V4L2_FL_USES_V4L2_FH
, &vfd
->flags
) ? fh
: NULL
;
1763 struct v4l2_ext_controls ctrls
;
1764 struct v4l2_ext_control ctrl
;
1766 if (vfh
&& vfh
->ctrl_handler
)
1767 return v4l2_s_ctrl(vfh
, vfh
->ctrl_handler
, p
);
1768 if (vfd
->ctrl_handler
)
1769 return v4l2_s_ctrl(NULL
, vfd
->ctrl_handler
, p
);
1770 if (ops
->vidioc_s_ctrl
)
1771 return ops
->vidioc_s_ctrl(file
, fh
, p
);
1772 if (ops
->vidioc_s_ext_ctrls
== NULL
)
1775 ctrls
.ctrl_class
= V4L2_CTRL_ID2CLASS(p
->id
);
1777 ctrls
.controls
= &ctrl
;
1779 ctrl
.value
= p
->value
;
1780 if (check_ext_ctrls(&ctrls
, 1))
1781 return ops
->vidioc_s_ext_ctrls(file
, fh
, &ctrls
);
1785 static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops
*ops
,
1786 struct file
*file
, void *fh
, void *arg
)
1788 struct video_device
*vfd
= video_devdata(file
);
1789 struct v4l2_ext_controls
*p
= arg
;
1790 struct v4l2_fh
*vfh
=
1791 test_bit(V4L2_FL_USES_V4L2_FH
, &vfd
->flags
) ? fh
: NULL
;
1793 p
->error_idx
= p
->count
;
1794 if (vfh
&& vfh
->ctrl_handler
)
1795 return v4l2_g_ext_ctrls(vfh
->ctrl_handler
, p
);
1796 if (vfd
->ctrl_handler
)
1797 return v4l2_g_ext_ctrls(vfd
->ctrl_handler
, p
);
1798 if (ops
->vidioc_g_ext_ctrls
== NULL
)
1800 return check_ext_ctrls(p
, 0) ? ops
->vidioc_g_ext_ctrls(file
, fh
, p
) :
1804 static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops
*ops
,
1805 struct file
*file
, void *fh
, void *arg
)
1807 struct video_device
*vfd
= video_devdata(file
);
1808 struct v4l2_ext_controls
*p
= arg
;
1809 struct v4l2_fh
*vfh
=
1810 test_bit(V4L2_FL_USES_V4L2_FH
, &vfd
->flags
) ? fh
: NULL
;
1812 p
->error_idx
= p
->count
;
1813 if (vfh
&& vfh
->ctrl_handler
)
1814 return v4l2_s_ext_ctrls(vfh
, vfh
->ctrl_handler
, p
);
1815 if (vfd
->ctrl_handler
)
1816 return v4l2_s_ext_ctrls(NULL
, vfd
->ctrl_handler
, p
);
1817 if (ops
->vidioc_s_ext_ctrls
== NULL
)
1819 return check_ext_ctrls(p
, 0) ? ops
->vidioc_s_ext_ctrls(file
, fh
, p
) :
1823 static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops
*ops
,
1824 struct file
*file
, void *fh
, void *arg
)
1826 struct video_device
*vfd
= video_devdata(file
);
1827 struct v4l2_ext_controls
*p
= arg
;
1828 struct v4l2_fh
*vfh
=
1829 test_bit(V4L2_FL_USES_V4L2_FH
, &vfd
->flags
) ? fh
: NULL
;
1831 p
->error_idx
= p
->count
;
1832 if (vfh
&& vfh
->ctrl_handler
)
1833 return v4l2_try_ext_ctrls(vfh
->ctrl_handler
, p
);
1834 if (vfd
->ctrl_handler
)
1835 return v4l2_try_ext_ctrls(vfd
->ctrl_handler
, p
);
1836 if (ops
->vidioc_try_ext_ctrls
== NULL
)
1838 return check_ext_ctrls(p
, 0) ? ops
->vidioc_try_ext_ctrls(file
, fh
, p
) :
1842 static int v4l_g_crop(const struct v4l2_ioctl_ops
*ops
,
1843 struct file
*file
, void *fh
, void *arg
)
1845 struct v4l2_crop
*p
= arg
;
1846 struct v4l2_selection s
= {
1851 if (ops
->vidioc_g_crop
)
1852 return ops
->vidioc_g_crop(file
, fh
, p
);
1853 /* simulate capture crop using selection api */
1855 /* crop means compose for output devices */
1856 if (V4L2_TYPE_IS_OUTPUT(p
->type
))
1857 s
.target
= V4L2_SEL_TGT_COMPOSE_ACTIVE
;
1859 s
.target
= V4L2_SEL_TGT_CROP_ACTIVE
;
1861 ret
= ops
->vidioc_g_selection(file
, fh
, &s
);
1863 /* copying results to old structure on success */
1869 static int v4l_s_crop(const struct v4l2_ioctl_ops
*ops
,
1870 struct file
*file
, void *fh
, void *arg
)
1872 struct v4l2_crop
*p
= arg
;
1873 struct v4l2_selection s
= {
1878 if (ops
->vidioc_s_crop
)
1879 return ops
->vidioc_s_crop(file
, fh
, p
);
1880 /* simulate capture crop using selection api */
1882 /* crop means compose for output devices */
1883 if (V4L2_TYPE_IS_OUTPUT(p
->type
))
1884 s
.target
= V4L2_SEL_TGT_COMPOSE_ACTIVE
;
1886 s
.target
= V4L2_SEL_TGT_CROP_ACTIVE
;
1888 return ops
->vidioc_s_selection(file
, fh
, &s
);
1891 static int v4l_cropcap(const struct v4l2_ioctl_ops
*ops
,
1892 struct file
*file
, void *fh
, void *arg
)
1894 struct v4l2_cropcap
*p
= arg
;
1896 if (ops
->vidioc_g_selection
) {
1897 struct v4l2_selection s
= { .type
= p
->type
};
1900 /* obtaining bounds */
1901 if (V4L2_TYPE_IS_OUTPUT(p
->type
))
1902 s
.target
= V4L2_SEL_TGT_COMPOSE_BOUNDS
;
1904 s
.target
= V4L2_SEL_TGT_CROP_BOUNDS
;
1906 ret
= ops
->vidioc_g_selection(file
, fh
, &s
);
1911 /* obtaining defrect */
1912 if (V4L2_TYPE_IS_OUTPUT(p
->type
))
1913 s
.target
= V4L2_SEL_TGT_COMPOSE_DEFAULT
;
1915 s
.target
= V4L2_SEL_TGT_CROP_DEFAULT
;
1917 ret
= ops
->vidioc_g_selection(file
, fh
, &s
);
1923 /* setting trivial pixelaspect */
1924 p
->pixelaspect
.numerator
= 1;
1925 p
->pixelaspect
.denominator
= 1;
1927 if (ops
->vidioc_cropcap
)
1928 return ops
->vidioc_cropcap(file
, fh
, p
);
1933 static int v4l_log_status(const struct v4l2_ioctl_ops
*ops
,
1934 struct file
*file
, void *fh
, void *arg
)
1936 struct video_device
*vfd
= video_devdata(file
);
1940 pr_info("%s: ================= START STATUS =================\n",
1941 vfd
->v4l2_dev
->name
);
1942 ret
= ops
->vidioc_log_status(file
, fh
);
1944 pr_info("%s: ================== END STATUS ==================\n",
1945 vfd
->v4l2_dev
->name
);
1949 static int v4l_dbg_g_register(const struct v4l2_ioctl_ops
*ops
,
1950 struct file
*file
, void *fh
, void *arg
)
1952 #ifdef CONFIG_VIDEO_ADV_DEBUG
1953 struct v4l2_dbg_register
*p
= arg
;
1954 struct video_device
*vfd
= video_devdata(file
);
1955 struct v4l2_subdev
*sd
;
1958 if (!capable(CAP_SYS_ADMIN
))
1960 if (p
->match
.type
== V4L2_CHIP_MATCH_SUBDEV
) {
1961 if (vfd
->v4l2_dev
== NULL
)
1963 v4l2_device_for_each_subdev(sd
, vfd
->v4l2_dev
)
1964 if (p
->match
.addr
== idx
++)
1965 return v4l2_subdev_call(sd
, core
, g_register
, p
);
1968 if (ops
->vidioc_g_register
&& p
->match
.type
== V4L2_CHIP_MATCH_BRIDGE
&&
1969 (ops
->vidioc_g_chip_info
|| p
->match
.addr
== 0))
1970 return ops
->vidioc_g_register(file
, fh
, p
);
1977 static int v4l_dbg_s_register(const struct v4l2_ioctl_ops
*ops
,
1978 struct file
*file
, void *fh
, void *arg
)
1980 #ifdef CONFIG_VIDEO_ADV_DEBUG
1981 const struct v4l2_dbg_register
*p
= arg
;
1982 struct video_device
*vfd
= video_devdata(file
);
1983 struct v4l2_subdev
*sd
;
1986 if (!capable(CAP_SYS_ADMIN
))
1988 if (p
->match
.type
== V4L2_CHIP_MATCH_SUBDEV
) {
1989 if (vfd
->v4l2_dev
== NULL
)
1991 v4l2_device_for_each_subdev(sd
, vfd
->v4l2_dev
)
1992 if (p
->match
.addr
== idx
++)
1993 return v4l2_subdev_call(sd
, core
, s_register
, p
);
1996 if (ops
->vidioc_s_register
&& p
->match
.type
== V4L2_CHIP_MATCH_BRIDGE
&&
1997 (ops
->vidioc_g_chip_info
|| p
->match
.addr
== 0))
1998 return ops
->vidioc_s_register(file
, fh
, p
);
2005 static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops
*ops
,
2006 struct file
*file
, void *fh
, void *arg
)
2008 #ifdef CONFIG_VIDEO_ADV_DEBUG
2009 struct video_device
*vfd
= video_devdata(file
);
2010 struct v4l2_dbg_chip_info
*p
= arg
;
2011 struct v4l2_subdev
*sd
;
2014 switch (p
->match
.type
) {
2015 case V4L2_CHIP_MATCH_BRIDGE
:
2016 if (ops
->vidioc_s_register
)
2017 p
->flags
|= V4L2_CHIP_FL_WRITABLE
;
2018 if (ops
->vidioc_g_register
)
2019 p
->flags
|= V4L2_CHIP_FL_READABLE
;
2020 strlcpy(p
->name
, vfd
->v4l2_dev
->name
, sizeof(p
->name
));
2021 if (ops
->vidioc_g_chip_info
)
2022 return ops
->vidioc_g_chip_info(file
, fh
, arg
);
2027 case V4L2_CHIP_MATCH_SUBDEV
:
2028 if (vfd
->v4l2_dev
== NULL
)
2030 v4l2_device_for_each_subdev(sd
, vfd
->v4l2_dev
) {
2031 if (p
->match
.addr
!= idx
++)
2033 if (sd
->ops
->core
&& sd
->ops
->core
->s_register
)
2034 p
->flags
|= V4L2_CHIP_FL_WRITABLE
;
2035 if (sd
->ops
->core
&& sd
->ops
->core
->g_register
)
2036 p
->flags
|= V4L2_CHIP_FL_READABLE
;
2037 strlcpy(p
->name
, sd
->name
, sizeof(p
->name
));
2048 static int v4l_dqevent(const struct v4l2_ioctl_ops
*ops
,
2049 struct file
*file
, void *fh
, void *arg
)
2051 return v4l2_event_dequeue(fh
, arg
, file
->f_flags
& O_NONBLOCK
);
2054 static int v4l_subscribe_event(const struct v4l2_ioctl_ops
*ops
,
2055 struct file
*file
, void *fh
, void *arg
)
2057 return ops
->vidioc_subscribe_event(fh
, arg
);
2060 static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops
*ops
,
2061 struct file
*file
, void *fh
, void *arg
)
2063 return ops
->vidioc_unsubscribe_event(fh
, arg
);
2066 static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops
*ops
,
2067 struct file
*file
, void *fh
, void *arg
)
2069 struct v4l2_sliced_vbi_cap
*p
= arg
;
2070 int ret
= check_fmt(file
, p
->type
);
2075 /* Clear up to type, everything after type is zeroed already */
2076 memset(p
, 0, offsetof(struct v4l2_sliced_vbi_cap
, type
));
2078 return ops
->vidioc_g_sliced_vbi_cap(file
, fh
, p
);
2081 static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops
*ops
,
2082 struct file
*file
, void *fh
, void *arg
)
2084 struct video_device
*vfd
= video_devdata(file
);
2085 struct v4l2_frequency_band
*p
= arg
;
2086 enum v4l2_tuner_type type
;
2089 if (vfd
->vfl_type
== VFL_TYPE_SDR
) {
2090 if (p
->type
!= V4L2_TUNER_ADC
&& p
->type
!= V4L2_TUNER_RF
)
2094 type
= (vfd
->vfl_type
== VFL_TYPE_RADIO
) ?
2095 V4L2_TUNER_RADIO
: V4L2_TUNER_ANALOG_TV
;
2096 if (type
!= p
->type
)
2099 if (ops
->vidioc_enum_freq_bands
) {
2100 err
= ops
->vidioc_enum_freq_bands(file
, fh
, p
);
2104 if (is_valid_ioctl(vfd
, VIDIOC_G_TUNER
)) {
2105 struct v4l2_tuner t
= {
2112 err
= ops
->vidioc_g_tuner(file
, fh
, &t
);
2115 p
->capability
= t
.capability
| V4L2_TUNER_CAP_FREQ_BANDS
;
2116 p
->rangelow
= t
.rangelow
;
2117 p
->rangehigh
= t
.rangehigh
;
2118 p
->modulation
= (type
== V4L2_TUNER_RADIO
) ?
2119 V4L2_BAND_MODULATION_FM
: V4L2_BAND_MODULATION_VSB
;
2122 if (is_valid_ioctl(vfd
, VIDIOC_G_MODULATOR
)) {
2123 struct v4l2_modulator m
= {
2127 if (type
!= V4L2_TUNER_RADIO
)
2131 err
= ops
->vidioc_g_modulator(file
, fh
, &m
);
2134 p
->capability
= m
.capability
| V4L2_TUNER_CAP_FREQ_BANDS
;
2135 p
->rangelow
= m
.rangelow
;
2136 p
->rangehigh
= m
.rangehigh
;
2137 p
->modulation
= (type
== V4L2_TUNER_RADIO
) ?
2138 V4L2_BAND_MODULATION_FM
: V4L2_BAND_MODULATION_VSB
;
2144 struct v4l2_ioctl_info
{
2147 const char * const name
;
2150 int (*func
)(const struct v4l2_ioctl_ops
*ops
,
2151 struct file
*file
, void *fh
, void *p
);
2153 void (*debug
)(const void *arg
, bool write_only
);
2156 /* This control needs a priority check */
2157 #define INFO_FL_PRIO (1 << 0)
2158 /* This control can be valid if the filehandle passes a control handler. */
2159 #define INFO_FL_CTRL (1 << 1)
2160 /* This is a standard ioctl, no need for special code */
2161 #define INFO_FL_STD (1 << 2)
2162 /* This is ioctl has its own function */
2163 #define INFO_FL_FUNC (1 << 3)
2165 #define INFO_FL_QUEUE (1 << 4)
2166 /* Zero struct from after the field to the end */
2167 #define INFO_FL_CLEAR(v4l2_struct, field) \
2168 ((offsetof(struct v4l2_struct, field) + \
2169 sizeof(((struct v4l2_struct *)0)->field)) << 16)
2170 #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
2172 #define IOCTL_INFO_STD(_ioctl, _vidioc, _debug, _flags) \
2173 [_IOC_NR(_ioctl)] = { \
2175 .flags = _flags | INFO_FL_STD, \
2177 .u.offset = offsetof(struct v4l2_ioctl_ops, _vidioc), \
2181 #define IOCTL_INFO_FNC(_ioctl, _func, _debug, _flags) \
2182 [_IOC_NR(_ioctl)] = { \
2184 .flags = _flags | INFO_FL_FUNC, \
2190 static struct v4l2_ioctl_info v4l2_ioctls
[] = {
2191 IOCTL_INFO_FNC(VIDIOC_QUERYCAP
, v4l_querycap
, v4l_print_querycap
, 0),
2192 IOCTL_INFO_FNC(VIDIOC_ENUM_FMT
, v4l_enum_fmt
, v4l_print_fmtdesc
, INFO_FL_CLEAR(v4l2_fmtdesc
, type
)),
2193 IOCTL_INFO_FNC(VIDIOC_G_FMT
, v4l_g_fmt
, v4l_print_format
, 0),
2194 IOCTL_INFO_FNC(VIDIOC_S_FMT
, v4l_s_fmt
, v4l_print_format
, INFO_FL_PRIO
),
2195 IOCTL_INFO_FNC(VIDIOC_REQBUFS
, v4l_reqbufs
, v4l_print_requestbuffers
, INFO_FL_PRIO
| INFO_FL_QUEUE
),
2196 IOCTL_INFO_FNC(VIDIOC_QUERYBUF
, v4l_querybuf
, v4l_print_buffer
, INFO_FL_QUEUE
| INFO_FL_CLEAR(v4l2_buffer
, length
)),
2197 IOCTL_INFO_STD(VIDIOC_G_FBUF
, vidioc_g_fbuf
, v4l_print_framebuffer
, 0),
2198 IOCTL_INFO_STD(VIDIOC_S_FBUF
, vidioc_s_fbuf
, v4l_print_framebuffer
, INFO_FL_PRIO
),
2199 IOCTL_INFO_FNC(VIDIOC_OVERLAY
, v4l_overlay
, v4l_print_u32
, INFO_FL_PRIO
),
2200 IOCTL_INFO_FNC(VIDIOC_QBUF
, v4l_qbuf
, v4l_print_buffer
, INFO_FL_QUEUE
),
2201 IOCTL_INFO_STD(VIDIOC_EXPBUF
, vidioc_expbuf
, v4l_print_exportbuffer
, INFO_FL_QUEUE
| INFO_FL_CLEAR(v4l2_exportbuffer
, flags
)),
2202 IOCTL_INFO_FNC(VIDIOC_DQBUF
, v4l_dqbuf
, v4l_print_buffer
, INFO_FL_QUEUE
),
2203 IOCTL_INFO_FNC(VIDIOC_STREAMON
, v4l_streamon
, v4l_print_buftype
, INFO_FL_PRIO
| INFO_FL_QUEUE
),
2204 IOCTL_INFO_FNC(VIDIOC_STREAMOFF
, v4l_streamoff
, v4l_print_buftype
, INFO_FL_PRIO
| INFO_FL_QUEUE
),
2205 IOCTL_INFO_FNC(VIDIOC_G_PARM
, v4l_g_parm
, v4l_print_streamparm
, INFO_FL_CLEAR(v4l2_streamparm
, type
)),
2206 IOCTL_INFO_FNC(VIDIOC_S_PARM
, v4l_s_parm
, v4l_print_streamparm
, INFO_FL_PRIO
),
2207 IOCTL_INFO_STD(VIDIOC_G_STD
, vidioc_g_std
, v4l_print_std
, 0),
2208 IOCTL_INFO_FNC(VIDIOC_S_STD
, v4l_s_std
, v4l_print_std
, INFO_FL_PRIO
),
2209 IOCTL_INFO_FNC(VIDIOC_ENUMSTD
, v4l_enumstd
, v4l_print_standard
, INFO_FL_CLEAR(v4l2_standard
, index
)),
2210 IOCTL_INFO_FNC(VIDIOC_ENUMINPUT
, v4l_enuminput
, v4l_print_enuminput
, INFO_FL_CLEAR(v4l2_input
, index
)),
2211 IOCTL_INFO_FNC(VIDIOC_G_CTRL
, v4l_g_ctrl
, v4l_print_control
, INFO_FL_CTRL
| INFO_FL_CLEAR(v4l2_control
, id
)),
2212 IOCTL_INFO_FNC(VIDIOC_S_CTRL
, v4l_s_ctrl
, v4l_print_control
, INFO_FL_PRIO
| INFO_FL_CTRL
),
2213 IOCTL_INFO_FNC(VIDIOC_G_TUNER
, v4l_g_tuner
, v4l_print_tuner
, INFO_FL_CLEAR(v4l2_tuner
, index
)),
2214 IOCTL_INFO_FNC(VIDIOC_S_TUNER
, v4l_s_tuner
, v4l_print_tuner
, INFO_FL_PRIO
),
2215 IOCTL_INFO_STD(VIDIOC_G_AUDIO
, vidioc_g_audio
, v4l_print_audio
, 0),
2216 IOCTL_INFO_STD(VIDIOC_S_AUDIO
, vidioc_s_audio
, v4l_print_audio
, INFO_FL_PRIO
),
2217 IOCTL_INFO_FNC(VIDIOC_QUERYCTRL
, v4l_queryctrl
, v4l_print_queryctrl
, INFO_FL_CTRL
| INFO_FL_CLEAR(v4l2_queryctrl
, id
)),
2218 IOCTL_INFO_FNC(VIDIOC_QUERYMENU
, v4l_querymenu
, v4l_print_querymenu
, INFO_FL_CTRL
| INFO_FL_CLEAR(v4l2_querymenu
, index
)),
2219 IOCTL_INFO_STD(VIDIOC_G_INPUT
, vidioc_g_input
, v4l_print_u32
, 0),
2220 IOCTL_INFO_FNC(VIDIOC_S_INPUT
, v4l_s_input
, v4l_print_u32
, INFO_FL_PRIO
),
2221 IOCTL_INFO_STD(VIDIOC_G_EDID
, vidioc_g_edid
, v4l_print_edid
, 0),
2222 IOCTL_INFO_STD(VIDIOC_S_EDID
, vidioc_s_edid
, v4l_print_edid
, INFO_FL_PRIO
),
2223 IOCTL_INFO_STD(VIDIOC_G_OUTPUT
, vidioc_g_output
, v4l_print_u32
, 0),
2224 IOCTL_INFO_FNC(VIDIOC_S_OUTPUT
, v4l_s_output
, v4l_print_u32
, INFO_FL_PRIO
),
2225 IOCTL_INFO_FNC(VIDIOC_ENUMOUTPUT
, v4l_enumoutput
, v4l_print_enumoutput
, INFO_FL_CLEAR(v4l2_output
, index
)),
2226 IOCTL_INFO_STD(VIDIOC_G_AUDOUT
, vidioc_g_audout
, v4l_print_audioout
, 0),
2227 IOCTL_INFO_STD(VIDIOC_S_AUDOUT
, vidioc_s_audout
, v4l_print_audioout
, INFO_FL_PRIO
),
2228 IOCTL_INFO_FNC(VIDIOC_G_MODULATOR
, v4l_g_modulator
, v4l_print_modulator
, INFO_FL_CLEAR(v4l2_modulator
, index
)),
2229 IOCTL_INFO_STD(VIDIOC_S_MODULATOR
, vidioc_s_modulator
, v4l_print_modulator
, INFO_FL_PRIO
),
2230 IOCTL_INFO_FNC(VIDIOC_G_FREQUENCY
, v4l_g_frequency
, v4l_print_frequency
, INFO_FL_CLEAR(v4l2_frequency
, tuner
)),
2231 IOCTL_INFO_FNC(VIDIOC_S_FREQUENCY
, v4l_s_frequency
, v4l_print_frequency
, INFO_FL_PRIO
),
2232 IOCTL_INFO_FNC(VIDIOC_CROPCAP
, v4l_cropcap
, v4l_print_cropcap
, INFO_FL_CLEAR(v4l2_cropcap
, type
)),
2233 IOCTL_INFO_FNC(VIDIOC_G_CROP
, v4l_g_crop
, v4l_print_crop
, INFO_FL_CLEAR(v4l2_crop
, type
)),
2234 IOCTL_INFO_FNC(VIDIOC_S_CROP
, v4l_s_crop
, v4l_print_crop
, INFO_FL_PRIO
),
2235 IOCTL_INFO_STD(VIDIOC_G_SELECTION
, vidioc_g_selection
, v4l_print_selection
, INFO_FL_CLEAR(v4l2_selection
, r
)),
2236 IOCTL_INFO_STD(VIDIOC_S_SELECTION
, vidioc_s_selection
, v4l_print_selection
, INFO_FL_PRIO
| INFO_FL_CLEAR(v4l2_selection
, r
)),
2237 IOCTL_INFO_STD(VIDIOC_G_JPEGCOMP
, vidioc_g_jpegcomp
, v4l_print_jpegcompression
, 0),
2238 IOCTL_INFO_STD(VIDIOC_S_JPEGCOMP
, vidioc_s_jpegcomp
, v4l_print_jpegcompression
, INFO_FL_PRIO
),
2239 IOCTL_INFO_FNC(VIDIOC_QUERYSTD
, v4l_querystd
, v4l_print_std
, 0),
2240 IOCTL_INFO_FNC(VIDIOC_TRY_FMT
, v4l_try_fmt
, v4l_print_format
, 0),
2241 IOCTL_INFO_STD(VIDIOC_ENUMAUDIO
, vidioc_enumaudio
, v4l_print_audio
, INFO_FL_CLEAR(v4l2_audio
, index
)),
2242 IOCTL_INFO_STD(VIDIOC_ENUMAUDOUT
, vidioc_enumaudout
, v4l_print_audioout
, INFO_FL_CLEAR(v4l2_audioout
, index
)),
2243 IOCTL_INFO_FNC(VIDIOC_G_PRIORITY
, v4l_g_priority
, v4l_print_u32
, 0),
2244 IOCTL_INFO_FNC(VIDIOC_S_PRIORITY
, v4l_s_priority
, v4l_print_u32
, INFO_FL_PRIO
),
2245 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
)),
2246 IOCTL_INFO_FNC(VIDIOC_LOG_STATUS
, v4l_log_status
, v4l_print_newline
, 0),
2247 IOCTL_INFO_FNC(VIDIOC_G_EXT_CTRLS
, v4l_g_ext_ctrls
, v4l_print_ext_controls
, INFO_FL_CTRL
),
2248 IOCTL_INFO_FNC(VIDIOC_S_EXT_CTRLS
, v4l_s_ext_ctrls
, v4l_print_ext_controls
, INFO_FL_PRIO
| INFO_FL_CTRL
),
2249 IOCTL_INFO_FNC(VIDIOC_TRY_EXT_CTRLS
, v4l_try_ext_ctrls
, v4l_print_ext_controls
, INFO_FL_CTRL
),
2250 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMESIZES
, vidioc_enum_framesizes
, v4l_print_frmsizeenum
, INFO_FL_CLEAR(v4l2_frmsizeenum
, pixel_format
)),
2251 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMEINTERVALS
, vidioc_enum_frameintervals
, v4l_print_frmivalenum
, INFO_FL_CLEAR(v4l2_frmivalenum
, height
)),
2252 IOCTL_INFO_STD(VIDIOC_G_ENC_INDEX
, vidioc_g_enc_index
, v4l_print_enc_idx
, 0),
2253 IOCTL_INFO_STD(VIDIOC_ENCODER_CMD
, vidioc_encoder_cmd
, v4l_print_encoder_cmd
, INFO_FL_PRIO
| INFO_FL_CLEAR(v4l2_encoder_cmd
, flags
)),
2254 IOCTL_INFO_STD(VIDIOC_TRY_ENCODER_CMD
, vidioc_try_encoder_cmd
, v4l_print_encoder_cmd
, INFO_FL_CLEAR(v4l2_encoder_cmd
, flags
)),
2255 IOCTL_INFO_STD(VIDIOC_DECODER_CMD
, vidioc_decoder_cmd
, v4l_print_decoder_cmd
, INFO_FL_PRIO
),
2256 IOCTL_INFO_STD(VIDIOC_TRY_DECODER_CMD
, vidioc_try_decoder_cmd
, v4l_print_decoder_cmd
, 0),
2257 IOCTL_INFO_FNC(VIDIOC_DBG_S_REGISTER
, v4l_dbg_s_register
, v4l_print_dbg_register
, 0),
2258 IOCTL_INFO_FNC(VIDIOC_DBG_G_REGISTER
, v4l_dbg_g_register
, v4l_print_dbg_register
, 0),
2259 IOCTL_INFO_FNC(VIDIOC_S_HW_FREQ_SEEK
, v4l_s_hw_freq_seek
, v4l_print_hw_freq_seek
, INFO_FL_PRIO
),
2260 IOCTL_INFO_STD(VIDIOC_S_DV_TIMINGS
, vidioc_s_dv_timings
, v4l_print_dv_timings
, INFO_FL_PRIO
),
2261 IOCTL_INFO_STD(VIDIOC_G_DV_TIMINGS
, vidioc_g_dv_timings
, v4l_print_dv_timings
, 0),
2262 IOCTL_INFO_FNC(VIDIOC_DQEVENT
, v4l_dqevent
, v4l_print_event
, 0),
2263 IOCTL_INFO_FNC(VIDIOC_SUBSCRIBE_EVENT
, v4l_subscribe_event
, v4l_print_event_subscription
, 0),
2264 IOCTL_INFO_FNC(VIDIOC_UNSUBSCRIBE_EVENT
, v4l_unsubscribe_event
, v4l_print_event_subscription
, 0),
2265 IOCTL_INFO_FNC(VIDIOC_CREATE_BUFS
, v4l_create_bufs
, v4l_print_create_buffers
, INFO_FL_PRIO
| INFO_FL_QUEUE
),
2266 IOCTL_INFO_FNC(VIDIOC_PREPARE_BUF
, v4l_prepare_buf
, v4l_print_buffer
, INFO_FL_QUEUE
),
2267 IOCTL_INFO_STD(VIDIOC_ENUM_DV_TIMINGS
, vidioc_enum_dv_timings
, v4l_print_enum_dv_timings
, 0),
2268 IOCTL_INFO_STD(VIDIOC_QUERY_DV_TIMINGS
, vidioc_query_dv_timings
, v4l_print_dv_timings
, 0),
2269 IOCTL_INFO_STD(VIDIOC_DV_TIMINGS_CAP
, vidioc_dv_timings_cap
, v4l_print_dv_timings_cap
, INFO_FL_CLEAR(v4l2_dv_timings_cap
, type
)),
2270 IOCTL_INFO_FNC(VIDIOC_ENUM_FREQ_BANDS
, v4l_enum_freq_bands
, v4l_print_freq_band
, 0),
2271 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
)),
2272 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
)),
2274 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
2276 bool v4l2_is_known_ioctl(unsigned int cmd
)
2278 if (_IOC_NR(cmd
) >= V4L2_IOCTLS
)
2280 return v4l2_ioctls
[_IOC_NR(cmd
)].ioctl
== cmd
;
2283 struct mutex
*v4l2_ioctl_get_lock(struct video_device
*vdev
, unsigned cmd
)
2285 if (_IOC_NR(cmd
) >= V4L2_IOCTLS
)
2287 if (test_bit(_IOC_NR(cmd
), vdev
->disable_locking
))
2289 if (vdev
->queue
&& vdev
->queue
->lock
&&
2290 (v4l2_ioctls
[_IOC_NR(cmd
)].flags
& INFO_FL_QUEUE
))
2291 return vdev
->queue
->lock
;
2295 /* Common ioctl debug function. This function can be used by
2296 external ioctl messages as well as internal V4L ioctl */
2297 void v4l_printk_ioctl(const char *prefix
, unsigned int cmd
)
2299 const char *dir
, *type
;
2302 printk(KERN_DEBUG
"%s: ", prefix
);
2304 switch (_IOC_TYPE(cmd
)) {
2309 if (_IOC_NR(cmd
) >= V4L2_IOCTLS
) {
2313 pr_cont("%s", v4l2_ioctls
[_IOC_NR(cmd
)].name
);
2320 switch (_IOC_DIR(cmd
)) {
2321 case _IOC_NONE
: dir
= "--"; break;
2322 case _IOC_READ
: dir
= "r-"; break;
2323 case _IOC_WRITE
: dir
= "-w"; break;
2324 case _IOC_READ
| _IOC_WRITE
: dir
= "rw"; break;
2325 default: dir
= "*ERR*"; break;
2327 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
2328 type
, _IOC_TYPE(cmd
), dir
, _IOC_NR(cmd
), cmd
);
2330 EXPORT_SYMBOL(v4l_printk_ioctl
);
2332 static long __video_do_ioctl(struct file
*file
,
2333 unsigned int cmd
, void *arg
)
2335 struct video_device
*vfd
= video_devdata(file
);
2336 const struct v4l2_ioctl_ops
*ops
= vfd
->ioctl_ops
;
2337 bool write_only
= false;
2338 struct v4l2_ioctl_info default_info
;
2339 const struct v4l2_ioctl_info
*info
;
2340 void *fh
= file
->private_data
;
2341 struct v4l2_fh
*vfh
= NULL
;
2342 int dev_debug
= vfd
->dev_debug
;
2346 pr_warn("%s: has no ioctl_ops.\n",
2347 video_device_node_name(vfd
));
2351 if (test_bit(V4L2_FL_USES_V4L2_FH
, &vfd
->flags
))
2352 vfh
= file
->private_data
;
2354 if (v4l2_is_known_ioctl(cmd
)) {
2355 info
= &v4l2_ioctls
[_IOC_NR(cmd
)];
2357 if (!test_bit(_IOC_NR(cmd
), vfd
->valid_ioctls
) &&
2358 !((info
->flags
& INFO_FL_CTRL
) && vfh
&& vfh
->ctrl_handler
))
2361 if (vfh
&& (info
->flags
& INFO_FL_PRIO
)) {
2362 ret
= v4l2_prio_check(vfd
->prio
, vfh
->prio
);
2367 default_info
.ioctl
= cmd
;
2368 default_info
.flags
= 0;
2369 default_info
.debug
= v4l_print_default
;
2370 info
= &default_info
;
2373 write_only
= _IOC_DIR(cmd
) == _IOC_WRITE
;
2374 if (info
->flags
& INFO_FL_STD
) {
2375 typedef int (*vidioc_op
)(struct file
*file
, void *fh
, void *p
);
2376 const void *p
= vfd
->ioctl_ops
;
2377 const vidioc_op
*vidioc
= p
+ info
->u
.offset
;
2379 ret
= (*vidioc
)(file
, fh
, arg
);
2380 } else if (info
->flags
& INFO_FL_FUNC
) {
2381 ret
= info
->u
.func(ops
, file
, fh
, arg
);
2382 } else if (!ops
->vidioc_default
) {
2385 ret
= ops
->vidioc_default(file
, fh
,
2386 vfh
? v4l2_prio_check(vfd
->prio
, vfh
->prio
) >= 0 : 0,
2391 if (dev_debug
& (V4L2_DEV_DEBUG_IOCTL
| V4L2_DEV_DEBUG_IOCTL_ARG
)) {
2392 if (!(dev_debug
& V4L2_DEV_DEBUG_STREAMING
) &&
2393 (cmd
== VIDIOC_QBUF
|| cmd
== VIDIOC_DQBUF
))
2396 v4l_printk_ioctl(video_device_node_name(vfd
), cmd
);
2398 pr_cont(": error %ld", ret
);
2399 if (!(dev_debug
& V4L2_DEV_DEBUG_IOCTL_ARG
))
2401 else if (_IOC_DIR(cmd
) == _IOC_NONE
)
2402 info
->debug(arg
, write_only
);
2405 info
->debug(arg
, write_only
);
2412 static int check_array_args(unsigned int cmd
, void *parg
, size_t *array_size
,
2413 void __user
**user_ptr
, void ***kernel_ptr
)
2418 case VIDIOC_PREPARE_BUF
:
2419 case VIDIOC_QUERYBUF
:
2421 case VIDIOC_DQBUF
: {
2422 struct v4l2_buffer
*buf
= parg
;
2424 if (V4L2_TYPE_IS_MULTIPLANAR(buf
->type
) && buf
->length
> 0) {
2425 if (buf
->length
> VIDEO_MAX_PLANES
) {
2429 *user_ptr
= (void __user
*)buf
->m
.planes
;
2430 *kernel_ptr
= (void **)&buf
->m
.planes
;
2431 *array_size
= sizeof(struct v4l2_plane
) * buf
->length
;
2438 case VIDIOC_S_EDID
: {
2439 struct v4l2_edid
*edid
= parg
;
2442 if (edid
->blocks
> 256) {
2446 *user_ptr
= (void __user
*)edid
->edid
;
2447 *kernel_ptr
= (void **)&edid
->edid
;
2448 *array_size
= edid
->blocks
* 128;
2454 case VIDIOC_S_EXT_CTRLS
:
2455 case VIDIOC_G_EXT_CTRLS
:
2456 case VIDIOC_TRY_EXT_CTRLS
: {
2457 struct v4l2_ext_controls
*ctrls
= parg
;
2459 if (ctrls
->count
!= 0) {
2460 if (ctrls
->count
> V4L2_CID_MAX_CTRLS
) {
2464 *user_ptr
= (void __user
*)ctrls
->controls
;
2465 *kernel_ptr
= (void **)&ctrls
->controls
;
2466 *array_size
= sizeof(struct v4l2_ext_control
)
2478 video_usercopy(struct file
*file
, unsigned int cmd
, unsigned long arg
,
2483 void *parg
= (void *)arg
;
2485 bool has_array_args
;
2486 size_t array_size
= 0;
2487 void __user
*user_ptr
= NULL
;
2488 void **kernel_ptr
= NULL
;
2490 /* Copy arguments into temp kernel buffer */
2491 if (_IOC_DIR(cmd
) != _IOC_NONE
) {
2492 if (_IOC_SIZE(cmd
) <= sizeof(sbuf
)) {
2495 /* too big to allocate from stack */
2496 mbuf
= kmalloc(_IOC_SIZE(cmd
), GFP_KERNEL
);
2503 if (_IOC_DIR(cmd
) & _IOC_WRITE
) {
2504 unsigned int n
= _IOC_SIZE(cmd
);
2507 * In some cases, only a few fields are used as input,
2508 * i.e. when the app sets "index" and then the driver
2509 * fills in the rest of the structure for the thing
2510 * with that index. We only need to copy up the first
2513 if (v4l2_is_known_ioctl(cmd
)) {
2514 u32 flags
= v4l2_ioctls
[_IOC_NR(cmd
)].flags
;
2515 if (flags
& INFO_FL_CLEAR_MASK
)
2516 n
= (flags
& INFO_FL_CLEAR_MASK
) >> 16;
2519 if (copy_from_user(parg
, (void __user
*)arg
, n
))
2522 /* zero out anything we don't copy from userspace */
2523 if (n
< _IOC_SIZE(cmd
))
2524 memset((u8
*)parg
+ n
, 0, _IOC_SIZE(cmd
) - n
);
2526 /* read-only ioctl */
2527 memset(parg
, 0, _IOC_SIZE(cmd
));
2531 err
= check_array_args(cmd
, parg
, &array_size
, &user_ptr
, &kernel_ptr
);
2534 has_array_args
= err
;
2536 if (has_array_args
) {
2538 * When adding new types of array args, make sure that the
2539 * parent argument to ioctl (which contains the pointer to the
2540 * array) fits into sbuf (so that mbuf will still remain
2541 * unused up to here).
2543 mbuf
= kmalloc(array_size
, GFP_KERNEL
);
2546 goto out_array_args
;
2548 if (copy_from_user(mbuf
, user_ptr
, array_size
))
2549 goto out_array_args
;
2554 err
= func(file
, cmd
, parg
);
2555 if (err
== -ENOIOCTLCMD
)
2558 if (cmd
== VIDIOC_DQBUF
)
2559 trace_v4l2_dqbuf(video_devdata(file
)->minor
, parg
);
2560 else if (cmd
== VIDIOC_QBUF
)
2561 trace_v4l2_qbuf(video_devdata(file
)->minor
, parg
);
2564 if (has_array_args
) {
2565 *kernel_ptr
= (void __force
*)user_ptr
;
2566 if (copy_to_user(user_ptr
, mbuf
, array_size
))
2568 goto out_array_args
;
2570 /* VIDIOC_QUERY_DV_TIMINGS can return an error, but still have valid
2571 results that must be returned. */
2572 if (err
< 0 && cmd
!= VIDIOC_QUERY_DV_TIMINGS
)
2576 /* Copy results into user buffer */
2577 switch (_IOC_DIR(cmd
)) {
2579 case (_IOC_WRITE
| _IOC_READ
):
2580 if (copy_to_user((void __user
*)arg
, parg
, _IOC_SIZE(cmd
)))
2589 EXPORT_SYMBOL(video_usercopy
);
2591 long video_ioctl2(struct file
*file
,
2592 unsigned int cmd
, unsigned long arg
)
2594 return video_usercopy(file
, cmd
, arg
, __video_do_ioctl
);
2596 EXPORT_SYMBOL(video_ioctl2
);