1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Video capture interface for Linux version 2
5 * A generic framework to process V4L2 ioctl commands.
7 * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1)
8 * Mauro Carvalho Chehab <mchehab@kernel.org> (version 2)
12 #include <linux/module.h>
13 #include <linux/slab.h>
14 #include <linux/types.h>
15 #include <linux/kernel.h>
16 #include <linux/version.h>
18 #include <linux/videodev2.h>
20 #include <media/v4l2-common.h>
21 #include <media/v4l2-ioctl.h>
22 #include <media/v4l2-ctrls.h>
23 #include <media/v4l2-fh.h>
24 #include <media/v4l2-event.h>
25 #include <media/v4l2-device.h>
26 #include <media/videobuf2-v4l2.h>
27 #include <media/v4l2-mc.h>
28 #include <media/v4l2-mem2mem.h>
30 #include <trace/events/v4l2.h>
32 /* Zero out the end of the struct pointed to by p. Everything after, but
33 * not including, the specified field is cleared. */
34 #define CLEAR_AFTER_FIELD(p, field) \
35 memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \
36 0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field))
38 #define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls)
45 static const struct std_descr standards[] = {
46 { V4L2_STD_NTSC, "NTSC" },
47 { V4L2_STD_NTSC_M, "NTSC-M" },
48 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" },
49 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" },
50 { V4L2_STD_NTSC_443, "NTSC-443" },
51 { V4L2_STD_PAL, "PAL" },
52 { V4L2_STD_PAL_BG, "PAL-BG" },
53 { V4L2_STD_PAL_B, "PAL-B" },
54 { V4L2_STD_PAL_B1, "PAL-B1" },
55 { V4L2_STD_PAL_G, "PAL-G" },
56 { V4L2_STD_PAL_H, "PAL-H" },
57 { V4L2_STD_PAL_I, "PAL-I" },
58 { V4L2_STD_PAL_DK, "PAL-DK" },
59 { V4L2_STD_PAL_D, "PAL-D" },
60 { V4L2_STD_PAL_D1, "PAL-D1" },
61 { V4L2_STD_PAL_K, "PAL-K" },
62 { V4L2_STD_PAL_M, "PAL-M" },
63 { V4L2_STD_PAL_N, "PAL-N" },
64 { V4L2_STD_PAL_Nc, "PAL-Nc" },
65 { V4L2_STD_PAL_60, "PAL-60" },
66 { V4L2_STD_SECAM, "SECAM" },
67 { V4L2_STD_SECAM_B, "SECAM-B" },
68 { V4L2_STD_SECAM_G, "SECAM-G" },
69 { V4L2_STD_SECAM_H, "SECAM-H" },
70 { V4L2_STD_SECAM_DK, "SECAM-DK" },
71 { V4L2_STD_SECAM_D, "SECAM-D" },
72 { V4L2_STD_SECAM_K, "SECAM-K" },
73 { V4L2_STD_SECAM_K1, "SECAM-K1" },
74 { V4L2_STD_SECAM_L, "SECAM-L" },
75 { V4L2_STD_SECAM_LC, "SECAM-Lc" },
79 /* video4linux standard ID conversion to standard name
81 const char *v4l2_norm_to_name(v4l2_std_id id)
86 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
87 64 bit comparisons. So, on that architecture, with some gcc
88 variants, compilation fails. Currently, the max value is 30bit wide.
92 for (i = 0; standards[i].std; i++)
93 if (myid == standards[i].std)
95 return standards[i].descr;
97 EXPORT_SYMBOL(v4l2_norm_to_name);
99 /* Returns frame period for the given standard */
100 void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod)
102 if (id & V4L2_STD_525_60) {
103 frameperiod->numerator = 1001;
104 frameperiod->denominator = 30000;
106 frameperiod->numerator = 1;
107 frameperiod->denominator = 25;
110 EXPORT_SYMBOL(v4l2_video_std_frame_period);
112 /* Fill in the fields of a v4l2_standard structure according to the
113 'id' and 'transmission' parameters. Returns negative on error. */
114 int v4l2_video_std_construct(struct v4l2_standard *vs,
115 int id, const char *name)
118 v4l2_video_std_frame_period(id, &vs->frameperiod);
119 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625;
120 strscpy(vs->name, name, sizeof(vs->name));
123 EXPORT_SYMBOL(v4l2_video_std_construct);
125 /* Fill in the fields of a v4l2_standard structure according to the
126 * 'id' and 'vs->index' parameters. Returns negative on error. */
127 int v4l_video_std_enumstd(struct v4l2_standard *vs, v4l2_std_id id)
129 v4l2_std_id curr_id = 0;
130 unsigned int index = vs->index, i, j = 0;
131 const char *descr = "";
133 /* Return -ENODATA if the id for the current input
134 or output is 0, meaning that it doesn't support this API. */
138 /* Return norm array in a canonical way */
139 for (i = 0; i <= index && id; i++) {
140 /* last std value in the standards array is 0, so this
141 while always ends there since (id & 0) == 0. */
142 while ((id & standards[j].std) != standards[j].std)
144 curr_id = standards[j].std;
145 descr = standards[j].descr;
149 if (curr_id != V4L2_STD_PAL &&
150 curr_id != V4L2_STD_SECAM &&
151 curr_id != V4L2_STD_NTSC)
157 v4l2_video_std_construct(vs, curr_id, descr);
161 /* ----------------------------------------------------------------- */
162 /* some arrays for pretty-printing debug messages of enum types */
164 const char *v4l2_field_names[] = {
165 [V4L2_FIELD_ANY] = "any",
166 [V4L2_FIELD_NONE] = "none",
167 [V4L2_FIELD_TOP] = "top",
168 [V4L2_FIELD_BOTTOM] = "bottom",
169 [V4L2_FIELD_INTERLACED] = "interlaced",
170 [V4L2_FIELD_SEQ_TB] = "seq-tb",
171 [V4L2_FIELD_SEQ_BT] = "seq-bt",
172 [V4L2_FIELD_ALTERNATE] = "alternate",
173 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",
174 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",
176 EXPORT_SYMBOL(v4l2_field_names);
178 const char *v4l2_type_names[] = {
180 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap",
181 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay",
182 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out",
183 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap",
184 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out",
185 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",
186 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out",
187 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay",
188 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane",
189 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane",
190 [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap",
191 [V4L2_BUF_TYPE_SDR_OUTPUT] = "sdr-out",
192 [V4L2_BUF_TYPE_META_CAPTURE] = "meta-cap",
193 [V4L2_BUF_TYPE_META_OUTPUT] = "meta-out",
195 EXPORT_SYMBOL(v4l2_type_names);
197 static const char *v4l2_memory_names[] = {
198 [V4L2_MEMORY_MMAP] = "mmap",
199 [V4L2_MEMORY_USERPTR] = "userptr",
200 [V4L2_MEMORY_OVERLAY] = "overlay",
201 [V4L2_MEMORY_DMABUF] = "dmabuf",
204 #define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown")
206 /* ------------------------------------------------------------------ */
207 /* debug help functions */
209 static void v4l_print_querycap(const void *arg, bool write_only)
211 const struct v4l2_capability *p = arg;
213 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, capabilities=0x%08x, device_caps=0x%08x\n",
214 (int)sizeof(p->driver), p->driver,
215 (int)sizeof(p->card), p->card,
216 (int)sizeof(p->bus_info), p->bus_info,
217 p->version, p->capabilities, p->device_caps);
220 static void v4l_print_enuminput(const void *arg, bool write_only)
222 const struct v4l2_input *p = arg;
224 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, std=0x%08Lx, status=0x%x, capabilities=0x%x\n",
225 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
226 p->tuner, (unsigned long long)p->std, p->status,
230 static void v4l_print_enumoutput(const void *arg, bool write_only)
232 const struct v4l2_output *p = arg;
234 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, modulator=%u, std=0x%08Lx, capabilities=0x%x\n",
235 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
236 p->modulator, (unsigned long long)p->std, p->capabilities);
239 static void v4l_print_audio(const void *arg, bool write_only)
241 const struct v4l2_audio *p = arg;
244 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode);
246 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
247 p->index, (int)sizeof(p->name), p->name,
248 p->capability, p->mode);
251 static void v4l_print_audioout(const void *arg, bool write_only)
253 const struct v4l2_audioout *p = arg;
256 pr_cont("index=%u\n", p->index);
258 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
259 p->index, (int)sizeof(p->name), p->name,
260 p->capability, p->mode);
263 static void v4l_print_fmtdesc(const void *arg, bool write_only)
265 const struct v4l2_fmtdesc *p = arg;
267 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%c%c%c%c, description='%.*s'\n",
268 p->index, prt_names(p->type, v4l2_type_names),
269 p->flags, (p->pixelformat & 0xff),
270 (p->pixelformat >> 8) & 0xff,
271 (p->pixelformat >> 16) & 0xff,
272 (p->pixelformat >> 24) & 0xff,
273 (int)sizeof(p->description), p->description);
276 static void v4l_print_format(const void *arg, bool write_only)
278 const struct v4l2_format *p = arg;
279 const struct v4l2_pix_format *pix;
280 const struct v4l2_pix_format_mplane *mp;
281 const struct v4l2_vbi_format *vbi;
282 const struct v4l2_sliced_vbi_format *sliced;
283 const struct v4l2_window *win;
284 const struct v4l2_sdr_format *sdr;
285 const struct v4l2_meta_format *meta;
289 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
291 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
292 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
294 pr_cont(", width=%u, height=%u, pixelformat=%c%c%c%c, field=%s, bytesperline=%u, sizeimage=%u, colorspace=%d, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",
295 pix->width, pix->height,
296 (pix->pixelformat & 0xff),
297 (pix->pixelformat >> 8) & 0xff,
298 (pix->pixelformat >> 16) & 0xff,
299 (pix->pixelformat >> 24) & 0xff,
300 prt_names(pix->field, v4l2_field_names),
301 pix->bytesperline, pix->sizeimage,
302 pix->colorspace, pix->flags, pix->ycbcr_enc,
303 pix->quantization, pix->xfer_func);
305 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
306 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
308 pr_cont(", width=%u, height=%u, format=%c%c%c%c, field=%s, colorspace=%d, num_planes=%u, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",
309 mp->width, mp->height,
310 (mp->pixelformat & 0xff),
311 (mp->pixelformat >> 8) & 0xff,
312 (mp->pixelformat >> 16) & 0xff,
313 (mp->pixelformat >> 24) & 0xff,
314 prt_names(mp->field, v4l2_field_names),
315 mp->colorspace, mp->num_planes, mp->flags,
316 mp->ycbcr_enc, mp->quantization, mp->xfer_func);
317 planes = min_t(u32, mp->num_planes, VIDEO_MAX_PLANES);
318 for (i = 0; i < planes; i++)
319 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i,
320 mp->plane_fmt[i].bytesperline,
321 mp->plane_fmt[i].sizeimage);
323 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
324 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
326 /* Note: we can't print the clip list here since the clips
327 * pointer is a userspace pointer, not a kernelspace
329 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",
330 win->w.width, win->w.height, win->w.left, win->w.top,
331 prt_names(win->field, v4l2_field_names),
332 win->chromakey, win->clipcount, win->clips,
333 win->bitmap, win->global_alpha);
335 case V4L2_BUF_TYPE_VBI_CAPTURE:
336 case V4L2_BUF_TYPE_VBI_OUTPUT:
338 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n",
339 vbi->sampling_rate, vbi->offset,
340 vbi->samples_per_line,
341 (vbi->sample_format & 0xff),
342 (vbi->sample_format >> 8) & 0xff,
343 (vbi->sample_format >> 16) & 0xff,
344 (vbi->sample_format >> 24) & 0xff,
345 vbi->start[0], vbi->start[1],
346 vbi->count[0], vbi->count[1]);
348 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
349 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
350 sliced = &p->fmt.sliced;
351 pr_cont(", service_set=0x%08x, io_size=%d\n",
352 sliced->service_set, sliced->io_size);
353 for (i = 0; i < 24; i++)
354 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
355 sliced->service_lines[0][i],
356 sliced->service_lines[1][i]);
358 case V4L2_BUF_TYPE_SDR_CAPTURE:
359 case V4L2_BUF_TYPE_SDR_OUTPUT:
361 pr_cont(", pixelformat=%c%c%c%c\n",
362 (sdr->pixelformat >> 0) & 0xff,
363 (sdr->pixelformat >> 8) & 0xff,
364 (sdr->pixelformat >> 16) & 0xff,
365 (sdr->pixelformat >> 24) & 0xff);
367 case V4L2_BUF_TYPE_META_CAPTURE:
368 case V4L2_BUF_TYPE_META_OUTPUT:
370 pr_cont(", dataformat=%c%c%c%c, buffersize=%u\n",
371 (meta->dataformat >> 0) & 0xff,
372 (meta->dataformat >> 8) & 0xff,
373 (meta->dataformat >> 16) & 0xff,
374 (meta->dataformat >> 24) & 0xff,
380 static void v4l_print_framebuffer(const void *arg, bool write_only)
382 const struct v4l2_framebuffer *p = arg;
384 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, height=%u, pixelformat=%c%c%c%c, bytesperline=%u, sizeimage=%u, colorspace=%d\n",
385 p->capability, p->flags, p->base,
386 p->fmt.width, p->fmt.height,
387 (p->fmt.pixelformat & 0xff),
388 (p->fmt.pixelformat >> 8) & 0xff,
389 (p->fmt.pixelformat >> 16) & 0xff,
390 (p->fmt.pixelformat >> 24) & 0xff,
391 p->fmt.bytesperline, p->fmt.sizeimage,
395 static void v4l_print_buftype(const void *arg, bool write_only)
397 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names));
400 static void v4l_print_modulator(const void *arg, bool write_only)
402 const struct v4l2_modulator *p = arg;
405 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans);
407 pr_cont("index=%u, name=%.*s, capability=0x%x, rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
408 p->index, (int)sizeof(p->name), p->name, p->capability,
409 p->rangelow, p->rangehigh, p->txsubchans);
412 static void v4l_print_tuner(const void *arg, bool write_only)
414 const struct v4l2_tuner *p = arg;
417 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode);
419 pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, rangelow=%u, rangehigh=%u, signal=%u, afc=%d, rxsubchans=0x%x, audmode=%u\n",
420 p->index, (int)sizeof(p->name), p->name, p->type,
421 p->capability, p->rangelow,
422 p->rangehigh, p->signal, p->afc,
423 p->rxsubchans, p->audmode);
426 static void v4l_print_frequency(const void *arg, bool write_only)
428 const struct v4l2_frequency *p = arg;
430 pr_cont("tuner=%u, type=%u, frequency=%u\n",
431 p->tuner, p->type, p->frequency);
434 static void v4l_print_standard(const void *arg, bool write_only)
436 const struct v4l2_standard *p = arg;
438 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, framelines=%u\n",
440 (unsigned long long)p->id, (int)sizeof(p->name), p->name,
441 p->frameperiod.numerator,
442 p->frameperiod.denominator,
446 static void v4l_print_std(const void *arg, bool write_only)
448 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg);
451 static void v4l_print_hw_freq_seek(const void *arg, bool write_only)
453 const struct v4l2_hw_freq_seek *p = arg;
455 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, rangelow=%u, rangehigh=%u\n",
456 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing,
457 p->rangelow, p->rangehigh);
460 static void v4l_print_requestbuffers(const void *arg, bool write_only)
462 const struct v4l2_requestbuffers *p = arg;
464 pr_cont("count=%d, type=%s, memory=%s\n",
466 prt_names(p->type, v4l2_type_names),
467 prt_names(p->memory, v4l2_memory_names));
470 static void v4l_print_buffer(const void *arg, bool write_only)
472 const struct v4l2_buffer *p = arg;
473 const struct v4l2_timecode *tc = &p->timecode;
474 const struct v4l2_plane *plane;
477 pr_cont("%02d:%02d:%02d.%09ld index=%d, type=%s, request_fd=%d, flags=0x%08x, field=%s, sequence=%d, memory=%s",
478 (int)p->timestamp.tv_sec / 3600,
479 ((int)p->timestamp.tv_sec / 60) % 60,
480 ((int)p->timestamp.tv_sec % 60),
481 (long)p->timestamp.tv_usec,
483 prt_names(p->type, v4l2_type_names), p->request_fd,
484 p->flags, prt_names(p->field, v4l2_field_names),
485 p->sequence, prt_names(p->memory, v4l2_memory_names));
487 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
489 for (i = 0; i < p->length; ++i) {
490 plane = &p->m.planes[i];
492 "plane %d: bytesused=%d, data_offset=0x%08x, offset/userptr=0x%lx, length=%d\n",
493 i, plane->bytesused, plane->data_offset,
494 plane->m.userptr, plane->length);
497 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n",
498 p->bytesused, p->m.userptr, p->length);
501 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, flags=0x%08x, frames=%d, userbits=0x%08x\n",
502 tc->hours, tc->minutes, tc->seconds,
503 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
506 static void v4l_print_exportbuffer(const void *arg, bool write_only)
508 const struct v4l2_exportbuffer *p = arg;
510 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n",
511 p->fd, prt_names(p->type, v4l2_type_names),
512 p->index, p->plane, p->flags);
515 static void v4l_print_create_buffers(const void *arg, bool write_only)
517 const struct v4l2_create_buffers *p = arg;
519 pr_cont("index=%d, count=%d, memory=%s, ",
521 prt_names(p->memory, v4l2_memory_names));
522 v4l_print_format(&p->format, write_only);
525 static void v4l_print_streamparm(const void *arg, bool write_only)
527 const struct v4l2_streamparm *p = arg;
529 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
531 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
532 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
533 const struct v4l2_captureparm *c = &p->parm.capture;
535 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, extendedmode=%d, readbuffers=%d\n",
536 c->capability, c->capturemode,
537 c->timeperframe.numerator, c->timeperframe.denominator,
538 c->extendedmode, c->readbuffers);
539 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
540 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
541 const struct v4l2_outputparm *c = &p->parm.output;
543 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, extendedmode=%d, writebuffers=%d\n",
544 c->capability, c->outputmode,
545 c->timeperframe.numerator, c->timeperframe.denominator,
546 c->extendedmode, c->writebuffers);
552 static void v4l_print_queryctrl(const void *arg, bool write_only)
554 const struct v4l2_queryctrl *p = arg;
556 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, step=%d, default=%d, flags=0x%08x\n",
557 p->id, p->type, (int)sizeof(p->name), p->name,
558 p->minimum, p->maximum,
559 p->step, p->default_value, p->flags);
562 static void v4l_print_query_ext_ctrl(const void *arg, bool write_only)
564 const struct v4l2_query_ext_ctrl *p = arg;
566 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%lld/%lld, step=%lld, default=%lld, flags=0x%08x, elem_size=%u, elems=%u, nr_of_dims=%u, dims=%u,%u,%u,%u\n",
567 p->id, p->type, (int)sizeof(p->name), p->name,
568 p->minimum, p->maximum,
569 p->step, p->default_value, p->flags,
570 p->elem_size, p->elems, p->nr_of_dims,
571 p->dims[0], p->dims[1], p->dims[2], p->dims[3]);
574 static void v4l_print_querymenu(const void *arg, bool write_only)
576 const struct v4l2_querymenu *p = arg;
578 pr_cont("id=0x%x, index=%d\n", p->id, p->index);
581 static void v4l_print_control(const void *arg, bool write_only)
583 const struct v4l2_control *p = arg;
585 pr_cont("id=0x%x, value=%d\n", p->id, p->value);
588 static void v4l_print_ext_controls(const void *arg, bool write_only)
590 const struct v4l2_ext_controls *p = arg;
593 pr_cont("which=0x%x, count=%d, error_idx=%d, request_fd=%d",
594 p->which, p->count, p->error_idx, p->request_fd);
595 for (i = 0; i < p->count; i++) {
596 if (!p->controls[i].size)
597 pr_cont(", id/val=0x%x/0x%x",
598 p->controls[i].id, p->controls[i].value);
600 pr_cont(", id/size=0x%x/%u",
601 p->controls[i].id, p->controls[i].size);
606 static void v4l_print_cropcap(const void *arg, bool write_only)
608 const struct v4l2_cropcap *p = arg;
610 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, defrect wxh=%dx%d, x,y=%d,%d, pixelaspect %d/%d\n",
611 prt_names(p->type, v4l2_type_names),
612 p->bounds.width, p->bounds.height,
613 p->bounds.left, p->bounds.top,
614 p->defrect.width, p->defrect.height,
615 p->defrect.left, p->defrect.top,
616 p->pixelaspect.numerator, p->pixelaspect.denominator);
619 static void v4l_print_crop(const void *arg, bool write_only)
621 const struct v4l2_crop *p = arg;
623 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n",
624 prt_names(p->type, v4l2_type_names),
625 p->c.width, p->c.height,
626 p->c.left, p->c.top);
629 static void v4l_print_selection(const void *arg, bool write_only)
631 const struct v4l2_selection *p = arg;
633 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n",
634 prt_names(p->type, v4l2_type_names),
636 p->r.width, p->r.height, p->r.left, p->r.top);
639 static void v4l_print_jpegcompression(const void *arg, bool write_only)
641 const struct v4l2_jpegcompression *p = arg;
643 pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n",
644 p->quality, p->APPn, p->APP_len,
645 p->COM_len, p->jpeg_markers);
648 static void v4l_print_enc_idx(const void *arg, bool write_only)
650 const struct v4l2_enc_idx *p = arg;
652 pr_cont("entries=%d, entries_cap=%d\n",
653 p->entries, p->entries_cap);
656 static void v4l_print_encoder_cmd(const void *arg, bool write_only)
658 const struct v4l2_encoder_cmd *p = arg;
660 pr_cont("cmd=%d, flags=0x%x\n",
664 static void v4l_print_decoder_cmd(const void *arg, bool write_only)
666 const struct v4l2_decoder_cmd *p = arg;
668 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags);
670 if (p->cmd == V4L2_DEC_CMD_START)
671 pr_info("speed=%d, format=%u\n",
672 p->start.speed, p->start.format);
673 else if (p->cmd == V4L2_DEC_CMD_STOP)
674 pr_info("pts=%llu\n", p->stop.pts);
677 static void v4l_print_dbg_chip_info(const void *arg, bool write_only)
679 const struct v4l2_dbg_chip_info *p = arg;
681 pr_cont("type=%u, ", p->match.type);
682 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
683 pr_cont("name=%.*s, ",
684 (int)sizeof(p->match.name), p->match.name);
686 pr_cont("addr=%u, ", p->match.addr);
687 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name);
690 static void v4l_print_dbg_register(const void *arg, bool write_only)
692 const struct v4l2_dbg_register *p = arg;
694 pr_cont("type=%u, ", p->match.type);
695 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
696 pr_cont("name=%.*s, ",
697 (int)sizeof(p->match.name), p->match.name);
699 pr_cont("addr=%u, ", p->match.addr);
700 pr_cont("reg=0x%llx, val=0x%llx\n",
704 static void v4l_print_dv_timings(const void *arg, bool write_only)
706 const struct v4l2_dv_timings *p = arg;
709 case V4L2_DV_BT_656_1120:
710 pr_cont("type=bt-656/1120, interlaced=%u, pixelclock=%llu, width=%u, height=%u, polarities=0x%x, hfrontporch=%u, hsync=%u, hbackporch=%u, vfrontporch=%u, vsync=%u, vbackporch=%u, il_vfrontporch=%u, il_vsync=%u, il_vbackporch=%u, standards=0x%x, flags=0x%x\n",
711 p->bt.interlaced, p->bt.pixelclock,
712 p->bt.width, p->bt.height,
713 p->bt.polarities, p->bt.hfrontporch,
714 p->bt.hsync, p->bt.hbackporch,
715 p->bt.vfrontporch, p->bt.vsync,
716 p->bt.vbackporch, p->bt.il_vfrontporch,
717 p->bt.il_vsync, p->bt.il_vbackporch,
718 p->bt.standards, p->bt.flags);
721 pr_cont("type=%d\n", p->type);
726 static void v4l_print_enum_dv_timings(const void *arg, bool write_only)
728 const struct v4l2_enum_dv_timings *p = arg;
730 pr_cont("index=%u, ", p->index);
731 v4l_print_dv_timings(&p->timings, write_only);
734 static void v4l_print_dv_timings_cap(const void *arg, bool write_only)
736 const struct v4l2_dv_timings_cap *p = arg;
739 case V4L2_DV_BT_656_1120:
740 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
741 p->bt.min_width, p->bt.max_width,
742 p->bt.min_height, p->bt.max_height,
743 p->bt.min_pixelclock, p->bt.max_pixelclock,
744 p->bt.standards, p->bt.capabilities);
747 pr_cont("type=%u\n", p->type);
752 static void v4l_print_frmsizeenum(const void *arg, bool write_only)
754 const struct v4l2_frmsizeenum *p = arg;
756 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u",
758 (p->pixel_format & 0xff),
759 (p->pixel_format >> 8) & 0xff,
760 (p->pixel_format >> 16) & 0xff,
761 (p->pixel_format >> 24) & 0xff,
764 case V4L2_FRMSIZE_TYPE_DISCRETE:
765 pr_cont(", wxh=%ux%u\n",
766 p->discrete.width, p->discrete.height);
768 case V4L2_FRMSIZE_TYPE_STEPWISE:
769 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n",
770 p->stepwise.min_width,
771 p->stepwise.min_height,
772 p->stepwise.max_width,
773 p->stepwise.max_height,
774 p->stepwise.step_width,
775 p->stepwise.step_height);
777 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
785 static void v4l_print_frmivalenum(const void *arg, bool write_only)
787 const struct v4l2_frmivalenum *p = arg;
789 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u",
791 (p->pixel_format & 0xff),
792 (p->pixel_format >> 8) & 0xff,
793 (p->pixel_format >> 16) & 0xff,
794 (p->pixel_format >> 24) & 0xff,
795 p->width, p->height, p->type);
797 case V4L2_FRMIVAL_TYPE_DISCRETE:
798 pr_cont(", fps=%d/%d\n",
799 p->discrete.numerator,
800 p->discrete.denominator);
802 case V4L2_FRMIVAL_TYPE_STEPWISE:
803 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n",
804 p->stepwise.min.numerator,
805 p->stepwise.min.denominator,
806 p->stepwise.max.numerator,
807 p->stepwise.max.denominator,
808 p->stepwise.step.numerator,
809 p->stepwise.step.denominator);
811 case V4L2_FRMIVAL_TYPE_CONTINUOUS:
819 static void v4l_print_event(const void *arg, bool write_only)
821 const struct v4l2_event *p = arg;
822 const struct v4l2_event_ctrl *c;
824 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%llu.%9.9llu\n",
825 p->type, p->pending, p->sequence, p->id,
826 p->timestamp.tv_sec, p->timestamp.tv_nsec);
828 case V4L2_EVENT_VSYNC:
829 printk(KERN_DEBUG "field=%s\n",
830 prt_names(p->u.vsync.field, v4l2_field_names));
832 case V4L2_EVENT_CTRL:
834 printk(KERN_DEBUG "changes=0x%x, type=%u, ",
835 c->changes, c->type);
836 if (c->type == V4L2_CTRL_TYPE_INTEGER64)
837 pr_cont("value64=%lld, ", c->value64);
839 pr_cont("value=%d, ", c->value);
840 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n",
841 c->flags, c->minimum, c->maximum,
842 c->step, c->default_value);
844 case V4L2_EVENT_FRAME_SYNC:
845 pr_cont("frame_sequence=%u\n",
846 p->u.frame_sync.frame_sequence);
851 static void v4l_print_event_subscription(const void *arg, bool write_only)
853 const struct v4l2_event_subscription *p = arg;
855 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
856 p->type, p->id, p->flags);
859 static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only)
861 const struct v4l2_sliced_vbi_cap *p = arg;
864 pr_cont("type=%s, service_set=0x%08x\n",
865 prt_names(p->type, v4l2_type_names), p->service_set);
866 for (i = 0; i < 24; i++)
867 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
868 p->service_lines[0][i],
869 p->service_lines[1][i]);
872 static void v4l_print_freq_band(const void *arg, bool write_only)
874 const struct v4l2_frequency_band *p = arg;
876 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n",
877 p->tuner, p->type, p->index,
878 p->capability, p->rangelow,
879 p->rangehigh, p->modulation);
882 static void v4l_print_edid(const void *arg, bool write_only)
884 const struct v4l2_edid *p = arg;
886 pr_cont("pad=%u, start_block=%u, blocks=%u\n",
887 p->pad, p->start_block, p->blocks);
890 static void v4l_print_u32(const void *arg, bool write_only)
892 pr_cont("value=%u\n", *(const u32 *)arg);
895 static void v4l_print_newline(const void *arg, bool write_only)
900 static void v4l_print_default(const void *arg, bool write_only)
902 pr_cont("driver-specific ioctl\n");
905 static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
909 /* zero the reserved fields */
911 for (i = 0; i < c->count; i++)
912 c->controls[i].reserved2[0] = 0;
914 /* V4L2_CID_PRIVATE_BASE cannot be used as control class
915 when using extended controls.
916 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
917 is it allowed for backwards compatibility.
919 if (!allow_priv && c->which == V4L2_CID_PRIVATE_BASE)
923 /* Check that all controls are from the same control class. */
924 for (i = 0; i < c->count; i++) {
925 if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) {
933 static int check_fmt(struct file *file, enum v4l2_buf_type type)
935 const u32 vid_caps = V4L2_CAP_VIDEO_CAPTURE |
936 V4L2_CAP_VIDEO_CAPTURE_MPLANE |
937 V4L2_CAP_VIDEO_OUTPUT |
938 V4L2_CAP_VIDEO_OUTPUT_MPLANE |
939 V4L2_CAP_VIDEO_M2M | V4L2_CAP_VIDEO_M2M_MPLANE;
940 const u32 meta_caps = V4L2_CAP_META_CAPTURE |
941 V4L2_CAP_META_OUTPUT;
942 struct video_device *vfd = video_devdata(file);
943 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
944 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER &&
945 (vfd->device_caps & vid_caps);
946 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI;
947 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
948 bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH;
949 bool is_meta = vfd->vfl_type == VFL_TYPE_GRABBER &&
950 (vfd->device_caps & meta_caps);
951 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
952 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
958 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
959 if ((is_vid || is_tch) && is_rx &&
960 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane))
963 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
964 if ((is_vid || is_tch) && is_rx && ops->vidioc_g_fmt_vid_cap_mplane)
967 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
968 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay)
971 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
972 if (is_vid && is_tx &&
973 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane))
976 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
977 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane)
980 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
981 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay)
984 case V4L2_BUF_TYPE_VBI_CAPTURE:
985 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap)
988 case V4L2_BUF_TYPE_VBI_OUTPUT:
989 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out)
992 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
993 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap)
996 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
997 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out)
1000 case V4L2_BUF_TYPE_SDR_CAPTURE:
1001 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap)
1004 case V4L2_BUF_TYPE_SDR_OUTPUT:
1005 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out)
1008 case V4L2_BUF_TYPE_META_CAPTURE:
1009 if (is_meta && is_rx && ops->vidioc_g_fmt_meta_cap)
1012 case V4L2_BUF_TYPE_META_OUTPUT:
1013 if (is_meta && is_tx && ops->vidioc_g_fmt_meta_out)
1022 static void v4l_sanitize_format(struct v4l2_format *fmt)
1024 unsigned int offset;
1026 /* Make sure num_planes is not bogus */
1027 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ||
1028 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
1029 fmt->fmt.pix_mp.num_planes = min_t(u32, fmt->fmt.pix_mp.num_planes,
1033 * The v4l2_pix_format structure has been extended with fields that were
1034 * not previously required to be set to zero by applications. The priv
1035 * field, when set to a magic value, indicates the the extended fields
1036 * are valid. Otherwise they will contain undefined values. To simplify
1037 * the API towards drivers zero the extended fields and set the priv
1038 * field to the magic value when the extended pixel format structure
1039 * isn't used by applications.
1042 if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1043 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1046 if (fmt->fmt.pix.priv == V4L2_PIX_FMT_PRIV_MAGIC)
1049 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1051 offset = offsetof(struct v4l2_pix_format, priv)
1052 + sizeof(fmt->fmt.pix.priv);
1053 memset(((void *)&fmt->fmt.pix) + offset, 0,
1054 sizeof(fmt->fmt.pix) - offset);
1057 static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
1058 struct file *file, void *fh, void *arg)
1060 struct v4l2_capability *cap = (struct v4l2_capability *)arg;
1061 struct video_device *vfd = video_devdata(file);
1064 cap->version = LINUX_VERSION_CODE;
1065 cap->device_caps = vfd->device_caps;
1066 cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS;
1068 ret = ops->vidioc_querycap(file, fh, cap);
1071 * Drivers must not change device_caps, so check for this and
1072 * warn if this happened.
1074 WARN_ON(cap->device_caps != vfd->device_caps);
1076 * Check that capabilities is a superset of
1077 * vfd->device_caps | V4L2_CAP_DEVICE_CAPS
1079 WARN_ON((cap->capabilities &
1080 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)) !=
1081 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS));
1082 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT;
1083 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT;
1088 static int v4l_s_input(const struct v4l2_ioctl_ops *ops,
1089 struct file *file, void *fh, void *arg)
1091 struct video_device *vfd = video_devdata(file);
1094 ret = v4l_enable_media_source(vfd);
1097 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg);
1100 static int v4l_s_output(const struct v4l2_ioctl_ops *ops,
1101 struct file *file, void *fh, void *arg)
1103 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg);
1106 static int v4l_g_priority(const struct v4l2_ioctl_ops *ops,
1107 struct file *file, void *fh, void *arg)
1109 struct video_device *vfd;
1112 vfd = video_devdata(file);
1113 *p = v4l2_prio_max(vfd->prio);
1117 static int v4l_s_priority(const struct v4l2_ioctl_ops *ops,
1118 struct file *file, void *fh, void *arg)
1120 struct video_device *vfd;
1121 struct v4l2_fh *vfh;
1124 vfd = video_devdata(file);
1125 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
1127 vfh = file->private_data;
1128 return v4l2_prio_change(vfd->prio, &vfh->prio, *p);
1131 static int v4l_enuminput(const struct v4l2_ioctl_ops *ops,
1132 struct file *file, void *fh, void *arg)
1134 struct video_device *vfd = video_devdata(file);
1135 struct v4l2_input *p = arg;
1138 * We set the flags for CAP_DV_TIMINGS &
1139 * CAP_STD here based on ioctl handler provided by the
1140 * driver. If the driver doesn't support these
1141 * for a specific input, it must override these flags.
1143 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1144 p->capabilities |= V4L2_IN_CAP_STD;
1146 return ops->vidioc_enum_input(file, fh, p);
1149 static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops,
1150 struct file *file, void *fh, void *arg)
1152 struct video_device *vfd = video_devdata(file);
1153 struct v4l2_output *p = arg;
1156 * We set the flags for CAP_DV_TIMINGS &
1157 * CAP_STD here based on ioctl handler provided by the
1158 * driver. If the driver doesn't support these
1159 * for a specific output, it must override these flags.
1161 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1162 p->capabilities |= V4L2_OUT_CAP_STD;
1164 return ops->vidioc_enum_output(file, fh, p);
1167 static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
1169 const unsigned sz = sizeof(fmt->description);
1170 const char *descr = NULL;
1174 * We depart from the normal coding style here since the descriptions
1175 * should be aligned so it is easy to see which descriptions will be
1176 * longer than 31 characters (the max length for a description).
1177 * And frankly, this is easier to read anyway.
1179 * Note that gcc will use O(log N) comparisons to find the right case.
1181 switch (fmt->pixelformat) {
1182 /* Max description length mask: descr = "0123456789012345678901234567890" */
1183 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break;
1184 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break;
1185 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break;
1186 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break;
1187 case V4L2_PIX_FMT_RGBA444: descr = "16-bit RGBA 4-4-4-4"; break;
1188 case V4L2_PIX_FMT_RGBX444: descr = "16-bit RGBX 4-4-4-4"; break;
1189 case V4L2_PIX_FMT_ABGR444: descr = "16-bit ABGR 4-4-4-4"; break;
1190 case V4L2_PIX_FMT_XBGR444: descr = "16-bit XBGR 4-4-4-4"; break;
1191 case V4L2_PIX_FMT_BGRA444: descr = "16-bit BGRA 4-4-4-4"; break;
1192 case V4L2_PIX_FMT_BGRX444: descr = "16-bit BGRX 4-4-4-4"; break;
1193 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break;
1194 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break;
1195 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break;
1196 case V4L2_PIX_FMT_ABGR555: descr = "16-bit ABGR 1-5-5-5"; break;
1197 case V4L2_PIX_FMT_XBGR555: descr = "16-bit XBGR 1-5-5-5"; break;
1198 case V4L2_PIX_FMT_RGBA555: descr = "16-bit RGBA 5-5-5-1"; break;
1199 case V4L2_PIX_FMT_RGBX555: descr = "16-bit RGBX 5-5-5-1"; break;
1200 case V4L2_PIX_FMT_BGRA555: descr = "16-bit BGRA 5-5-5-1"; break;
1201 case V4L2_PIX_FMT_BGRX555: descr = "16-bit BGRX 5-5-5-1"; break;
1202 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break;
1203 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break;
1204 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break;
1205 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break;
1206 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break;
1207 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break;
1208 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break;
1209 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break;
1210 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break;
1211 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break;
1212 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break;
1213 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break;
1214 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break;
1215 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break;
1216 case V4L2_PIX_FMT_BGRA32: descr = "32-bit ABGR 8-8-8-8"; break;
1217 case V4L2_PIX_FMT_BGRX32: descr = "32-bit XBGR 8-8-8-8"; break;
1218 case V4L2_PIX_FMT_RGBA32: descr = "32-bit RGBA 8-8-8-8"; break;
1219 case V4L2_PIX_FMT_RGBX32: descr = "32-bit RGBX 8-8-8-8"; break;
1220 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break;
1221 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break;
1222 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break;
1223 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break;
1224 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break;
1225 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break;
1226 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break;
1227 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break;
1228 case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break;
1229 case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break;
1230 case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break;
1231 case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break;
1232 case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break;
1233 case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break;
1234 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break;
1235 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break;
1236 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break;
1237 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break;
1238 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break;
1239 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break;
1240 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break;
1241 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break;
1242 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break;
1243 case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break;
1244 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break;
1245 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break;
1246 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break;
1247 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break;
1248 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break;
1249 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break;
1250 case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break;
1251 case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break;
1252 case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break;
1253 case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break;
1254 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break;
1255 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break;
1256 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break;
1257 case V4L2_PIX_FMT_HM12: descr = "YUV 4:2:0 (16x16 Macroblocks)"; break;
1258 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break;
1259 case V4L2_PIX_FMT_NV12: descr = "Y/CbCr 4:2:0"; break;
1260 case V4L2_PIX_FMT_NV21: descr = "Y/CrCb 4:2:0"; break;
1261 case V4L2_PIX_FMT_NV16: descr = "Y/CbCr 4:2:2"; break;
1262 case V4L2_PIX_FMT_NV61: descr = "Y/CrCb 4:2:2"; break;
1263 case V4L2_PIX_FMT_NV24: descr = "Y/CbCr 4:4:4"; break;
1264 case V4L2_PIX_FMT_NV42: descr = "Y/CrCb 4:4:4"; break;
1265 case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break;
1266 case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break;
1267 case V4L2_PIX_FMT_NV16M: descr = "Y/CbCr 4:2:2 (N-C)"; break;
1268 case V4L2_PIX_FMT_NV61M: descr = "Y/CrCb 4:2:2 (N-C)"; break;
1269 case V4L2_PIX_FMT_NV12MT: descr = "Y/CbCr 4:2:0 (64x32 MB, N-C)"; break;
1270 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/CbCr 4:2:0 (16x16 MB, N-C)"; break;
1271 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break;
1272 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break;
1273 case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break;
1274 case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break;
1275 case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break;
1276 case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break;
1277 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break;
1278 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break;
1279 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break;
1280 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break;
1281 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break;
1282 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break;
1283 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break;
1284 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break;
1285 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break;
1286 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break;
1287 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break;
1288 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break;
1289 case V4L2_PIX_FMT_IPU3_SBGGR10: descr = "10-bit bayer BGGR IPU3 Packed"; break;
1290 case V4L2_PIX_FMT_IPU3_SGBRG10: descr = "10-bit bayer GBRG IPU3 Packed"; break;
1291 case V4L2_PIX_FMT_IPU3_SGRBG10: descr = "10-bit bayer GRBG IPU3 Packed"; break;
1292 case V4L2_PIX_FMT_IPU3_SRGGB10: descr = "10-bit bayer RGGB IPU3 Packed"; break;
1293 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break;
1294 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break;
1295 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break;
1296 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break;
1297 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break;
1298 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break;
1299 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break;
1300 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break;
1301 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break;
1302 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break;
1303 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break;
1304 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break;
1305 case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break;
1306 case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break;
1307 case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break;
1308 case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break;
1309 case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break;
1310 case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break;
1311 case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break;
1312 case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break;
1313 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break;
1314 case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break;
1315 case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break;
1316 case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break;
1317 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break;
1318 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break;
1319 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break;
1320 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break;
1321 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break;
1322 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break;
1323 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break;
1324 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break;
1325 case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break;
1326 case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break;
1327 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break;
1328 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break;
1329 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break;
1330 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break;
1331 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break;
1332 case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break;
1333 case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break;
1334 case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break;
1335 case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit Signed Deltas"; break;
1336 case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit Signed Deltas"; break;
1337 case V4L2_TCH_FMT_TU16: descr = "16-bit Unsigned Touch Data"; break;
1338 case V4L2_TCH_FMT_TU08: descr = "8-bit Unsigned Touch Data"; break;
1339 case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break;
1340 case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break;
1341 case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break;
1342 case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break;
1343 case V4L2_META_FMT_VIVID: descr = "Vivid Metadata"; break;
1346 /* Compressed formats */
1347 flags = V4L2_FMT_FLAG_COMPRESSED;
1348 switch (fmt->pixelformat) {
1349 /* Max description length mask: descr = "0123456789012345678901234567890" */
1350 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break;
1351 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break;
1352 case V4L2_PIX_FMT_DV: descr = "1394"; break;
1353 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break;
1354 case V4L2_PIX_FMT_H264: descr = "H.264"; break;
1355 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break;
1356 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break;
1357 case V4L2_PIX_FMT_H264_SLICE: descr = "H.264 Parsed Slice Data"; break;
1358 case V4L2_PIX_FMT_H263: descr = "H.263"; break;
1359 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break;
1360 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break;
1361 case V4L2_PIX_FMT_MPEG2_SLICE: descr = "MPEG-2 Parsed Slice Data"; break;
1362 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 Part 2 ES"; break;
1363 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break;
1364 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break;
1365 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break;
1366 case V4L2_PIX_FMT_VP8: descr = "VP8"; break;
1367 case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break;
1368 case V4L2_PIX_FMT_VP9: descr = "VP9"; break;
1369 case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */
1370 case V4L2_PIX_FMT_HEVC_SLICE: descr = "HEVC Parsed Slice Data"; break;
1371 case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */
1372 case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */
1373 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break;
1374 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break;
1375 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break;
1376 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break;
1377 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break;
1378 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break;
1379 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break;
1380 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break;
1381 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break;
1382 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break;
1383 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break;
1384 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break;
1385 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break;
1386 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break;
1387 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break;
1388 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break;
1389 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break;
1390 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break;
1391 case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break;
1392 case V4L2_PIX_FMT_SUNXI_TILED_NV12: descr = "Sunxi Tiled NV12 Format"; break;
1394 if (fmt->description[0])
1396 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat);
1398 snprintf(fmt->description, sz, "%c%c%c%c%s",
1399 (char)(fmt->pixelformat & 0x7f),
1400 (char)((fmt->pixelformat >> 8) & 0x7f),
1401 (char)((fmt->pixelformat >> 16) & 0x7f),
1402 (char)((fmt->pixelformat >> 24) & 0x7f),
1403 (fmt->pixelformat & (1UL << 31)) ? "-BE" : "");
1409 WARN_ON(strscpy(fmt->description, descr, sz) < 0);
1410 fmt->flags |= flags;
1413 static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
1414 struct file *file, void *fh, void *arg)
1416 struct video_device *vdev = video_devdata(file);
1417 struct v4l2_fmtdesc *p = arg;
1418 int ret = check_fmt(file, p->type);
1426 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1427 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1428 cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE |
1429 V4L2_CAP_VIDEO_M2M_MPLANE;
1430 if (!!(vdev->device_caps & cap_mask) !=
1431 (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE))
1434 if (unlikely(!ops->vidioc_enum_fmt_vid_cap))
1436 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
1438 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1439 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay))
1441 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
1443 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1444 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1445 cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE |
1446 V4L2_CAP_VIDEO_M2M_MPLANE;
1447 if (!!(vdev->device_caps & cap_mask) !=
1448 (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE))
1451 if (unlikely(!ops->vidioc_enum_fmt_vid_out))
1453 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg);
1455 case V4L2_BUF_TYPE_SDR_CAPTURE:
1456 if (unlikely(!ops->vidioc_enum_fmt_sdr_cap))
1458 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg);
1460 case V4L2_BUF_TYPE_SDR_OUTPUT:
1461 if (unlikely(!ops->vidioc_enum_fmt_sdr_out))
1463 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg);
1465 case V4L2_BUF_TYPE_META_CAPTURE:
1466 if (unlikely(!ops->vidioc_enum_fmt_meta_cap))
1468 ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg);
1470 case V4L2_BUF_TYPE_META_OUTPUT:
1471 if (unlikely(!ops->vidioc_enum_fmt_meta_out))
1473 ret = ops->vidioc_enum_fmt_meta_out(file, fh, arg);
1477 v4l_fill_fmtdesc(p);
1481 static void v4l_pix_format_touch(struct v4l2_pix_format *p)
1484 * The v4l2_pix_format structure contains fields that make no sense for
1485 * touch. Set them to default values in this case.
1488 p->field = V4L2_FIELD_NONE;
1489 p->colorspace = V4L2_COLORSPACE_RAW;
1492 p->quantization = 0;
1496 static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
1497 struct file *file, void *fh, void *arg)
1499 struct v4l2_format *p = arg;
1500 struct video_device *vfd = video_devdata(file);
1501 int ret = check_fmt(file, p->type);
1507 * fmt can't be cleared for these overlay types due to the 'clips'
1508 * 'clipcount' and 'bitmap' pointers in struct v4l2_window.
1509 * Those are provided by the user. So handle these two overlay types
1510 * first, and then just do a simple memset for the other types.
1513 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1514 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: {
1515 struct v4l2_clip __user *clips = p->fmt.win.clips;
1516 u32 clipcount = p->fmt.win.clipcount;
1517 void __user *bitmap = p->fmt.win.bitmap;
1519 memset(&p->fmt, 0, sizeof(p->fmt));
1520 p->fmt.win.clips = clips;
1521 p->fmt.win.clipcount = clipcount;
1522 p->fmt.win.bitmap = bitmap;
1526 memset(&p->fmt, 0, sizeof(p->fmt));
1531 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1532 if (unlikely(!ops->vidioc_g_fmt_vid_cap))
1534 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1535 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg);
1536 /* just in case the driver zeroed it again */
1537 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1538 if (vfd->vfl_type == VFL_TYPE_TOUCH)
1539 v4l_pix_format_touch(&p->fmt.pix);
1541 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1542 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
1543 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1544 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
1545 case V4L2_BUF_TYPE_VBI_CAPTURE:
1546 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
1547 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1548 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
1549 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1550 if (unlikely(!ops->vidioc_g_fmt_vid_out))
1552 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1553 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg);
1554 /* just in case the driver zeroed it again */
1555 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1557 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1558 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
1559 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1560 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
1561 case V4L2_BUF_TYPE_VBI_OUTPUT:
1562 return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
1563 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1564 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
1565 case V4L2_BUF_TYPE_SDR_CAPTURE:
1566 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg);
1567 case V4L2_BUF_TYPE_SDR_OUTPUT:
1568 return ops->vidioc_g_fmt_sdr_out(file, fh, arg);
1569 case V4L2_BUF_TYPE_META_CAPTURE:
1570 return ops->vidioc_g_fmt_meta_cap(file, fh, arg);
1571 case V4L2_BUF_TYPE_META_OUTPUT:
1572 return ops->vidioc_g_fmt_meta_out(file, fh, arg);
1577 static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
1578 struct file *file, void *fh, void *arg)
1580 struct v4l2_format *p = arg;
1581 struct video_device *vfd = video_devdata(file);
1582 int ret = check_fmt(file, p->type);
1588 ret = v4l_enable_media_source(vfd);
1591 v4l_sanitize_format(p);
1594 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1595 if (unlikely(!ops->vidioc_s_fmt_vid_cap))
1597 CLEAR_AFTER_FIELD(p, fmt.pix);
1598 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg);
1599 /* just in case the driver zeroed it again */
1600 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1601 if (vfd->vfl_type == VFL_TYPE_TOUCH)
1602 v4l_pix_format_touch(&p->fmt.pix);
1604 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1605 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane))
1607 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
1608 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1609 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i],
1611 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
1612 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1613 if (unlikely(!ops->vidioc_s_fmt_vid_overlay))
1615 CLEAR_AFTER_FIELD(p, fmt.win);
1616 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
1617 case V4L2_BUF_TYPE_VBI_CAPTURE:
1618 if (unlikely(!ops->vidioc_s_fmt_vbi_cap))
1620 CLEAR_AFTER_FIELD(p, fmt.vbi.flags);
1621 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
1622 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1623 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap))
1625 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size);
1626 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
1627 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1628 if (unlikely(!ops->vidioc_s_fmt_vid_out))
1630 CLEAR_AFTER_FIELD(p, fmt.pix);
1631 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg);
1632 /* just in case the driver zeroed it again */
1633 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1635 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1636 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane))
1638 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
1639 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1640 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i],
1642 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
1643 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1644 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay))
1646 CLEAR_AFTER_FIELD(p, fmt.win);
1647 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
1648 case V4L2_BUF_TYPE_VBI_OUTPUT:
1649 if (unlikely(!ops->vidioc_s_fmt_vbi_out))
1651 CLEAR_AFTER_FIELD(p, fmt.vbi.flags);
1652 return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
1653 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1654 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out))
1656 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size);
1657 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
1658 case V4L2_BUF_TYPE_SDR_CAPTURE:
1659 if (unlikely(!ops->vidioc_s_fmt_sdr_cap))
1661 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize);
1662 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg);
1663 case V4L2_BUF_TYPE_SDR_OUTPUT:
1664 if (unlikely(!ops->vidioc_s_fmt_sdr_out))
1666 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize);
1667 return ops->vidioc_s_fmt_sdr_out(file, fh, arg);
1668 case V4L2_BUF_TYPE_META_CAPTURE:
1669 if (unlikely(!ops->vidioc_s_fmt_meta_cap))
1671 CLEAR_AFTER_FIELD(p, fmt.meta);
1672 return ops->vidioc_s_fmt_meta_cap(file, fh, arg);
1673 case V4L2_BUF_TYPE_META_OUTPUT:
1674 if (unlikely(!ops->vidioc_s_fmt_meta_out))
1676 CLEAR_AFTER_FIELD(p, fmt.meta);
1677 return ops->vidioc_s_fmt_meta_out(file, fh, arg);
1682 static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
1683 struct file *file, void *fh, void *arg)
1685 struct v4l2_format *p = arg;
1686 struct video_device *vfd = video_devdata(file);
1687 int ret = check_fmt(file, p->type);
1693 v4l_sanitize_format(p);
1696 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1697 if (unlikely(!ops->vidioc_try_fmt_vid_cap))
1699 CLEAR_AFTER_FIELD(p, fmt.pix);
1700 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg);
1701 /* just in case the driver zeroed it again */
1702 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1703 if (vfd->vfl_type == VFL_TYPE_TOUCH)
1704 v4l_pix_format_touch(&p->fmt.pix);
1706 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1707 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane))
1709 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
1710 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1711 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i],
1713 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
1714 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1715 if (unlikely(!ops->vidioc_try_fmt_vid_overlay))
1717 CLEAR_AFTER_FIELD(p, fmt.win);
1718 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
1719 case V4L2_BUF_TYPE_VBI_CAPTURE:
1720 if (unlikely(!ops->vidioc_try_fmt_vbi_cap))
1722 CLEAR_AFTER_FIELD(p, fmt.vbi.flags);
1723 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
1724 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1725 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap))
1727 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size);
1728 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
1729 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1730 if (unlikely(!ops->vidioc_try_fmt_vid_out))
1732 CLEAR_AFTER_FIELD(p, fmt.pix);
1733 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg);
1734 /* just in case the driver zeroed it again */
1735 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1737 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1738 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane))
1740 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
1741 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1742 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i],
1744 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
1745 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1746 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay))
1748 CLEAR_AFTER_FIELD(p, fmt.win);
1749 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
1750 case V4L2_BUF_TYPE_VBI_OUTPUT:
1751 if (unlikely(!ops->vidioc_try_fmt_vbi_out))
1753 CLEAR_AFTER_FIELD(p, fmt.vbi.flags);
1754 return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
1755 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1756 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out))
1758 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size);
1759 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
1760 case V4L2_BUF_TYPE_SDR_CAPTURE:
1761 if (unlikely(!ops->vidioc_try_fmt_sdr_cap))
1763 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize);
1764 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg);
1765 case V4L2_BUF_TYPE_SDR_OUTPUT:
1766 if (unlikely(!ops->vidioc_try_fmt_sdr_out))
1768 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize);
1769 return ops->vidioc_try_fmt_sdr_out(file, fh, arg);
1770 case V4L2_BUF_TYPE_META_CAPTURE:
1771 if (unlikely(!ops->vidioc_try_fmt_meta_cap))
1773 CLEAR_AFTER_FIELD(p, fmt.meta);
1774 return ops->vidioc_try_fmt_meta_cap(file, fh, arg);
1775 case V4L2_BUF_TYPE_META_OUTPUT:
1776 if (unlikely(!ops->vidioc_try_fmt_meta_out))
1778 CLEAR_AFTER_FIELD(p, fmt.meta);
1779 return ops->vidioc_try_fmt_meta_out(file, fh, arg);
1784 static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
1785 struct file *file, void *fh, void *arg)
1787 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
1790 static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
1791 struct file *file, void *fh, void *arg)
1793 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
1796 static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,
1797 struct file *file, void *fh, void *arg)
1799 struct video_device *vfd = video_devdata(file);
1800 struct v4l2_tuner *p = arg;
1803 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1804 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1805 err = ops->vidioc_g_tuner(file, fh, p);
1807 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1811 static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
1812 struct file *file, void *fh, void *arg)
1814 struct video_device *vfd = video_devdata(file);
1815 struct v4l2_tuner *p = arg;
1818 ret = v4l_enable_media_source(vfd);
1821 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1822 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1823 return ops->vidioc_s_tuner(file, fh, p);
1826 static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,
1827 struct file *file, void *fh, void *arg)
1829 struct video_device *vfd = video_devdata(file);
1830 struct v4l2_modulator *p = arg;
1833 if (vfd->vfl_type == VFL_TYPE_RADIO)
1834 p->type = V4L2_TUNER_RADIO;
1836 err = ops->vidioc_g_modulator(file, fh, p);
1838 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1842 static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops,
1843 struct file *file, void *fh, void *arg)
1845 struct video_device *vfd = video_devdata(file);
1846 struct v4l2_modulator *p = arg;
1848 if (vfd->vfl_type == VFL_TYPE_RADIO)
1849 p->type = V4L2_TUNER_RADIO;
1851 return ops->vidioc_s_modulator(file, fh, p);
1854 static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
1855 struct file *file, void *fh, void *arg)
1857 struct video_device *vfd = video_devdata(file);
1858 struct v4l2_frequency *p = arg;
1860 if (vfd->vfl_type == VFL_TYPE_SDR)
1861 p->type = V4L2_TUNER_SDR;
1863 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1864 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1865 return ops->vidioc_g_frequency(file, fh, p);
1868 static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
1869 struct file *file, void *fh, void *arg)
1871 struct video_device *vfd = video_devdata(file);
1872 const struct v4l2_frequency *p = arg;
1873 enum v4l2_tuner_type type;
1876 ret = v4l_enable_media_source(vfd);
1879 if (vfd->vfl_type == VFL_TYPE_SDR) {
1880 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)
1883 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1884 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1885 if (type != p->type)
1888 return ops->vidioc_s_frequency(file, fh, p);
1891 static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
1892 struct file *file, void *fh, void *arg)
1894 struct video_device *vfd = video_devdata(file);
1895 struct v4l2_standard *p = arg;
1897 return v4l_video_std_enumstd(p, vfd->tvnorms);
1900 static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
1901 struct file *file, void *fh, void *arg)
1903 struct video_device *vfd = video_devdata(file);
1904 v4l2_std_id id = *(v4l2_std_id *)arg, norm;
1907 ret = v4l_enable_media_source(vfd);
1910 norm = id & vfd->tvnorms;
1911 if (vfd->tvnorms && !norm) /* Check if std is supported */
1914 /* Calls the specific handler */
1915 return ops->vidioc_s_std(file, fh, norm);
1918 static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
1919 struct file *file, void *fh, void *arg)
1921 struct video_device *vfd = video_devdata(file);
1922 v4l2_std_id *p = arg;
1925 ret = v4l_enable_media_source(vfd);
1929 * If no signal is detected, then the driver should return
1930 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with
1931 * any standards that do not apply removed.
1933 * This means that tuners, audio and video decoders can join
1934 * their efforts to improve the standards detection.
1937 return ops->vidioc_querystd(file, fh, arg);
1940 static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
1941 struct file *file, void *fh, void *arg)
1943 struct video_device *vfd = video_devdata(file);
1944 struct v4l2_hw_freq_seek *p = arg;
1945 enum v4l2_tuner_type type;
1948 ret = v4l_enable_media_source(vfd);
1951 /* s_hw_freq_seek is not supported for SDR for now */
1952 if (vfd->vfl_type == VFL_TYPE_SDR)
1955 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1956 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1957 if (p->type != type)
1959 return ops->vidioc_s_hw_freq_seek(file, fh, p);
1962 static int v4l_overlay(const struct v4l2_ioctl_ops *ops,
1963 struct file *file, void *fh, void *arg)
1965 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg);
1968 static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,
1969 struct file *file, void *fh, void *arg)
1971 struct v4l2_requestbuffers *p = arg;
1972 int ret = check_fmt(file, p->type);
1977 CLEAR_AFTER_FIELD(p, capabilities);
1979 return ops->vidioc_reqbufs(file, fh, p);
1982 static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,
1983 struct file *file, void *fh, void *arg)
1985 struct v4l2_buffer *p = arg;
1986 int ret = check_fmt(file, p->type);
1988 return ret ? ret : ops->vidioc_querybuf(file, fh, p);
1991 static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,
1992 struct file *file, void *fh, void *arg)
1994 struct v4l2_buffer *p = arg;
1995 int ret = check_fmt(file, p->type);
1997 return ret ? ret : ops->vidioc_qbuf(file, fh, p);
2000 static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,
2001 struct file *file, void *fh, void *arg)
2003 struct v4l2_buffer *p = arg;
2004 int ret = check_fmt(file, p->type);
2006 return ret ? ret : ops->vidioc_dqbuf(file, fh, p);
2009 static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
2010 struct file *file, void *fh, void *arg)
2012 struct v4l2_create_buffers *create = arg;
2013 int ret = check_fmt(file, create->format.type);
2018 CLEAR_AFTER_FIELD(create, capabilities);
2020 v4l_sanitize_format(&create->format);
2022 ret = ops->vidioc_create_bufs(file, fh, create);
2024 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
2025 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
2026 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
2031 static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
2032 struct file *file, void *fh, void *arg)
2034 struct v4l2_buffer *b = arg;
2035 int ret = check_fmt(file, b->type);
2037 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
2040 static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
2041 struct file *file, void *fh, void *arg)
2043 struct v4l2_streamparm *p = arg;
2045 int ret = check_fmt(file, p->type);
2049 if (ops->vidioc_g_parm)
2050 return ops->vidioc_g_parm(file, fh, p);
2051 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
2052 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2054 p->parm.capture.readbuffers = 2;
2055 ret = ops->vidioc_g_std(file, fh, &std);
2057 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe);
2061 static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
2062 struct file *file, void *fh, void *arg)
2064 struct v4l2_streamparm *p = arg;
2065 int ret = check_fmt(file, p->type);
2070 /* Note: extendedmode is never used in drivers */
2071 if (V4L2_TYPE_IS_OUTPUT(p->type)) {
2072 memset(p->parm.output.reserved, 0,
2073 sizeof(p->parm.output.reserved));
2074 p->parm.output.extendedmode = 0;
2075 p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY;
2077 memset(p->parm.capture.reserved, 0,
2078 sizeof(p->parm.capture.reserved));
2079 p->parm.capture.extendedmode = 0;
2080 p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY;
2082 return ops->vidioc_s_parm(file, fh, p);
2085 static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,
2086 struct file *file, void *fh, void *arg)
2088 struct video_device *vfd = video_devdata(file);
2089 struct v4l2_queryctrl *p = arg;
2090 struct v4l2_fh *vfh =
2091 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2093 if (vfh && vfh->ctrl_handler)
2094 return v4l2_queryctrl(vfh->ctrl_handler, p);
2095 if (vfd->ctrl_handler)
2096 return v4l2_queryctrl(vfd->ctrl_handler, p);
2097 if (ops->vidioc_queryctrl)
2098 return ops->vidioc_queryctrl(file, fh, p);
2102 static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops,
2103 struct file *file, void *fh, void *arg)
2105 struct video_device *vfd = video_devdata(file);
2106 struct v4l2_query_ext_ctrl *p = arg;
2107 struct v4l2_fh *vfh =
2108 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2110 if (vfh && vfh->ctrl_handler)
2111 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p);
2112 if (vfd->ctrl_handler)
2113 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p);
2114 if (ops->vidioc_query_ext_ctrl)
2115 return ops->vidioc_query_ext_ctrl(file, fh, p);
2119 static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,
2120 struct file *file, void *fh, void *arg)
2122 struct video_device *vfd = video_devdata(file);
2123 struct v4l2_querymenu *p = arg;
2124 struct v4l2_fh *vfh =
2125 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2127 if (vfh && vfh->ctrl_handler)
2128 return v4l2_querymenu(vfh->ctrl_handler, p);
2129 if (vfd->ctrl_handler)
2130 return v4l2_querymenu(vfd->ctrl_handler, p);
2131 if (ops->vidioc_querymenu)
2132 return ops->vidioc_querymenu(file, fh, p);
2136 static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops,
2137 struct file *file, void *fh, void *arg)
2139 struct video_device *vfd = video_devdata(file);
2140 struct v4l2_control *p = arg;
2141 struct v4l2_fh *vfh =
2142 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2143 struct v4l2_ext_controls ctrls;
2144 struct v4l2_ext_control ctrl;
2146 if (vfh && vfh->ctrl_handler)
2147 return v4l2_g_ctrl(vfh->ctrl_handler, p);
2148 if (vfd->ctrl_handler)
2149 return v4l2_g_ctrl(vfd->ctrl_handler, p);
2150 if (ops->vidioc_g_ctrl)
2151 return ops->vidioc_g_ctrl(file, fh, p);
2152 if (ops->vidioc_g_ext_ctrls == NULL)
2155 ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
2157 ctrls.controls = &ctrl;
2159 ctrl.value = p->value;
2160 if (check_ext_ctrls(&ctrls, 1)) {
2161 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
2164 p->value = ctrl.value;
2170 static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,
2171 struct file *file, void *fh, void *arg)
2173 struct video_device *vfd = video_devdata(file);
2174 struct v4l2_control *p = arg;
2175 struct v4l2_fh *vfh =
2176 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2177 struct v4l2_ext_controls ctrls;
2178 struct v4l2_ext_control ctrl;
2180 if (vfh && vfh->ctrl_handler)
2181 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
2182 if (vfd->ctrl_handler)
2183 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
2184 if (ops->vidioc_s_ctrl)
2185 return ops->vidioc_s_ctrl(file, fh, p);
2186 if (ops->vidioc_s_ext_ctrls == NULL)
2189 ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
2191 ctrls.controls = &ctrl;
2193 ctrl.value = p->value;
2194 if (check_ext_ctrls(&ctrls, 1))
2195 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
2199 static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2200 struct file *file, void *fh, void *arg)
2202 struct video_device *vfd = video_devdata(file);
2203 struct v4l2_ext_controls *p = arg;
2204 struct v4l2_fh *vfh =
2205 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2207 p->error_idx = p->count;
2208 if (vfh && vfh->ctrl_handler)
2209 return v4l2_g_ext_ctrls(vfh->ctrl_handler,
2210 vfd, vfd->v4l2_dev->mdev, p);
2211 if (vfd->ctrl_handler)
2212 return v4l2_g_ext_ctrls(vfd->ctrl_handler,
2213 vfd, vfd->v4l2_dev->mdev, p);
2214 if (ops->vidioc_g_ext_ctrls == NULL)
2216 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :
2220 static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2221 struct file *file, void *fh, void *arg)
2223 struct video_device *vfd = video_devdata(file);
2224 struct v4l2_ext_controls *p = arg;
2225 struct v4l2_fh *vfh =
2226 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2228 p->error_idx = p->count;
2229 if (vfh && vfh->ctrl_handler)
2230 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler,
2231 vfd, vfd->v4l2_dev->mdev, p);
2232 if (vfd->ctrl_handler)
2233 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler,
2234 vfd, vfd->v4l2_dev->mdev, p);
2235 if (ops->vidioc_s_ext_ctrls == NULL)
2237 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :
2241 static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2242 struct file *file, void *fh, void *arg)
2244 struct video_device *vfd = video_devdata(file);
2245 struct v4l2_ext_controls *p = arg;
2246 struct v4l2_fh *vfh =
2247 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2249 p->error_idx = p->count;
2250 if (vfh && vfh->ctrl_handler)
2251 return v4l2_try_ext_ctrls(vfh->ctrl_handler,
2252 vfd, vfd->v4l2_dev->mdev, p);
2253 if (vfd->ctrl_handler)
2254 return v4l2_try_ext_ctrls(vfd->ctrl_handler,
2255 vfd, vfd->v4l2_dev->mdev, p);
2256 if (ops->vidioc_try_ext_ctrls == NULL)
2258 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :
2263 * The selection API specified originally that the _MPLANE buffer types
2264 * shouldn't be used. The reasons for this are lost in the mists of time
2265 * (or just really crappy memories). Regardless, this is really annoying
2266 * for userspace. So to keep things simple we map _MPLANE buffer types
2267 * to their 'regular' counterparts before calling the driver. And we
2268 * restore it afterwards. This way applications can use either buffer
2269 * type and drivers don't need to check for both.
2271 static int v4l_g_selection(const struct v4l2_ioctl_ops *ops,
2272 struct file *file, void *fh, void *arg)
2274 struct v4l2_selection *p = arg;
2275 u32 old_type = p->type;
2278 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2279 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2280 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2281 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2282 ret = ops->vidioc_g_selection(file, fh, p);
2287 static int v4l_s_selection(const struct v4l2_ioctl_ops *ops,
2288 struct file *file, void *fh, void *arg)
2290 struct v4l2_selection *p = arg;
2291 u32 old_type = p->type;
2294 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2295 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2296 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2297 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2298 ret = ops->vidioc_s_selection(file, fh, p);
2303 static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
2304 struct file *file, void *fh, void *arg)
2306 struct video_device *vfd = video_devdata(file);
2307 struct v4l2_crop *p = arg;
2308 struct v4l2_selection s = {
2313 /* simulate capture crop using selection api */
2315 /* crop means compose for output devices */
2316 if (V4L2_TYPE_IS_OUTPUT(p->type))
2317 s.target = V4L2_SEL_TGT_COMPOSE;
2319 s.target = V4L2_SEL_TGT_CROP;
2321 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))
2322 s.target = s.target == V4L2_SEL_TGT_COMPOSE ?
2323 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE;
2325 ret = v4l_g_selection(ops, file, fh, &s);
2327 /* copying results to old structure on success */
2333 static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
2334 struct file *file, void *fh, void *arg)
2336 struct video_device *vfd = video_devdata(file);
2337 struct v4l2_crop *p = arg;
2338 struct v4l2_selection s = {
2343 /* simulate capture crop using selection api */
2345 /* crop means compose for output devices */
2346 if (V4L2_TYPE_IS_OUTPUT(p->type))
2347 s.target = V4L2_SEL_TGT_COMPOSE;
2349 s.target = V4L2_SEL_TGT_CROP;
2351 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))
2352 s.target = s.target == V4L2_SEL_TGT_COMPOSE ?
2353 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE;
2355 return v4l_s_selection(ops, file, fh, &s);
2358 static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
2359 struct file *file, void *fh, void *arg)
2361 struct video_device *vfd = video_devdata(file);
2362 struct v4l2_cropcap *p = arg;
2363 struct v4l2_selection s = { .type = p->type };
2366 /* setting trivial pixelaspect */
2367 p->pixelaspect.numerator = 1;
2368 p->pixelaspect.denominator = 1;
2370 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2371 s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2372 else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2373 s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2376 * The determine_valid_ioctls() call already should ensure
2377 * that this can never happen, but just in case...
2379 if (WARN_ON(!ops->vidioc_g_selection))
2382 if (ops->vidioc_g_pixelaspect)
2383 ret = ops->vidioc_g_pixelaspect(file, fh, s.type,
2387 * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the
2388 * square pixel aspect ratio in that case.
2390 if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD)
2393 /* Use g_selection() to fill in the bounds and defrect rectangles */
2395 /* obtaining bounds */
2396 if (V4L2_TYPE_IS_OUTPUT(p->type))
2397 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
2399 s.target = V4L2_SEL_TGT_CROP_BOUNDS;
2401 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))
2402 s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ?
2403 V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS;
2405 ret = v4l_g_selection(ops, file, fh, &s);
2410 /* obtaining defrect */
2411 if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS)
2412 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
2414 s.target = V4L2_SEL_TGT_CROP_DEFAULT;
2416 ret = v4l_g_selection(ops, file, fh, &s);
2424 static int v4l_log_status(const struct v4l2_ioctl_ops *ops,
2425 struct file *file, void *fh, void *arg)
2427 struct video_device *vfd = video_devdata(file);
2431 pr_info("%s: ================= START STATUS =================\n",
2432 vfd->v4l2_dev->name);
2433 ret = ops->vidioc_log_status(file, fh);
2435 pr_info("%s: ================== END STATUS ==================\n",
2436 vfd->v4l2_dev->name);
2440 static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
2441 struct file *file, void *fh, void *arg)
2443 #ifdef CONFIG_VIDEO_ADV_DEBUG
2444 struct v4l2_dbg_register *p = arg;
2445 struct video_device *vfd = video_devdata(file);
2446 struct v4l2_subdev *sd;
2449 if (!capable(CAP_SYS_ADMIN))
2451 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2452 if (vfd->v4l2_dev == NULL)
2454 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2455 if (p->match.addr == idx++)
2456 return v4l2_subdev_call(sd, core, g_register, p);
2459 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2460 (ops->vidioc_g_chip_info || p->match.addr == 0))
2461 return ops->vidioc_g_register(file, fh, p);
2468 static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
2469 struct file *file, void *fh, void *arg)
2471 #ifdef CONFIG_VIDEO_ADV_DEBUG
2472 const struct v4l2_dbg_register *p = arg;
2473 struct video_device *vfd = video_devdata(file);
2474 struct v4l2_subdev *sd;
2477 if (!capable(CAP_SYS_ADMIN))
2479 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2480 if (vfd->v4l2_dev == NULL)
2482 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2483 if (p->match.addr == idx++)
2484 return v4l2_subdev_call(sd, core, s_register, p);
2487 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2488 (ops->vidioc_g_chip_info || p->match.addr == 0))
2489 return ops->vidioc_s_register(file, fh, p);
2496 static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,
2497 struct file *file, void *fh, void *arg)
2499 #ifdef CONFIG_VIDEO_ADV_DEBUG
2500 struct video_device *vfd = video_devdata(file);
2501 struct v4l2_dbg_chip_info *p = arg;
2502 struct v4l2_subdev *sd;
2505 switch (p->match.type) {
2506 case V4L2_CHIP_MATCH_BRIDGE:
2507 if (ops->vidioc_s_register)
2508 p->flags |= V4L2_CHIP_FL_WRITABLE;
2509 if (ops->vidioc_g_register)
2510 p->flags |= V4L2_CHIP_FL_READABLE;
2511 strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));
2512 if (ops->vidioc_g_chip_info)
2513 return ops->vidioc_g_chip_info(file, fh, arg);
2518 case V4L2_CHIP_MATCH_SUBDEV:
2519 if (vfd->v4l2_dev == NULL)
2521 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {
2522 if (p->match.addr != idx++)
2524 if (sd->ops->core && sd->ops->core->s_register)
2525 p->flags |= V4L2_CHIP_FL_WRITABLE;
2526 if (sd->ops->core && sd->ops->core->g_register)
2527 p->flags |= V4L2_CHIP_FL_READABLE;
2528 strscpy(p->name, sd->name, sizeof(p->name));
2539 static int v4l_dqevent(const struct v4l2_ioctl_ops *ops,
2540 struct file *file, void *fh, void *arg)
2542 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK);
2545 static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,
2546 struct file *file, void *fh, void *arg)
2548 return ops->vidioc_subscribe_event(fh, arg);
2551 static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,
2552 struct file *file, void *fh, void *arg)
2554 return ops->vidioc_unsubscribe_event(fh, arg);
2557 static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,
2558 struct file *file, void *fh, void *arg)
2560 struct v4l2_sliced_vbi_cap *p = arg;
2561 int ret = check_fmt(file, p->type);
2566 /* Clear up to type, everything after type is zeroed already */
2567 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
2569 return ops->vidioc_g_sliced_vbi_cap(file, fh, p);
2572 static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
2573 struct file *file, void *fh, void *arg)
2575 struct video_device *vfd = video_devdata(file);
2576 struct v4l2_frequency_band *p = arg;
2577 enum v4l2_tuner_type type;
2580 if (vfd->vfl_type == VFL_TYPE_SDR) {
2581 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)
2585 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2586 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2587 if (type != p->type)
2590 if (ops->vidioc_enum_freq_bands) {
2591 err = ops->vidioc_enum_freq_bands(file, fh, p);
2595 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) {
2596 struct v4l2_tuner t = {
2603 err = ops->vidioc_g_tuner(file, fh, &t);
2606 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2607 p->rangelow = t.rangelow;
2608 p->rangehigh = t.rangehigh;
2609 p->modulation = (type == V4L2_TUNER_RADIO) ?
2610 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2613 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) {
2614 struct v4l2_modulator m = {
2618 if (type != V4L2_TUNER_RADIO)
2622 err = ops->vidioc_g_modulator(file, fh, &m);
2625 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2626 p->rangelow = m.rangelow;
2627 p->rangehigh = m.rangehigh;
2628 p->modulation = (type == V4L2_TUNER_RADIO) ?
2629 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2635 struct v4l2_ioctl_info {
2638 const char * const name;
2639 int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file,
2641 void (*debug)(const void *arg, bool write_only);
2644 /* This control needs a priority check */
2645 #define INFO_FL_PRIO (1 << 0)
2646 /* This control can be valid if the filehandle passes a control handler. */
2647 #define INFO_FL_CTRL (1 << 1)
2649 #define INFO_FL_QUEUE (1 << 2)
2650 /* Always copy back result, even on error */
2651 #define INFO_FL_ALWAYS_COPY (1 << 3)
2652 /* Zero struct from after the field to the end */
2653 #define INFO_FL_CLEAR(v4l2_struct, field) \
2654 ((offsetof(struct v4l2_struct, field) + \
2655 sizeof_field(struct v4l2_struct, field)) << 16)
2656 #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
2658 #define DEFINE_V4L_STUB_FUNC(_vidioc) \
2659 static int v4l_stub_ ## _vidioc( \
2660 const struct v4l2_ioctl_ops *ops, \
2661 struct file *file, void *fh, void *p) \
2663 return ops->vidioc_ ## _vidioc(file, fh, p); \
2666 #define IOCTL_INFO(_ioctl, _func, _debug, _flags) \
2667 [_IOC_NR(_ioctl)] = { \
2675 DEFINE_V4L_STUB_FUNC(g_fbuf)
2676 DEFINE_V4L_STUB_FUNC(s_fbuf)
2677 DEFINE_V4L_STUB_FUNC(expbuf)
2678 DEFINE_V4L_STUB_FUNC(g_std)
2679 DEFINE_V4L_STUB_FUNC(g_audio)
2680 DEFINE_V4L_STUB_FUNC(s_audio)
2681 DEFINE_V4L_STUB_FUNC(g_input)
2682 DEFINE_V4L_STUB_FUNC(g_edid)
2683 DEFINE_V4L_STUB_FUNC(s_edid)
2684 DEFINE_V4L_STUB_FUNC(g_output)
2685 DEFINE_V4L_STUB_FUNC(g_audout)
2686 DEFINE_V4L_STUB_FUNC(s_audout)
2687 DEFINE_V4L_STUB_FUNC(g_jpegcomp)
2688 DEFINE_V4L_STUB_FUNC(s_jpegcomp)
2689 DEFINE_V4L_STUB_FUNC(enumaudio)
2690 DEFINE_V4L_STUB_FUNC(enumaudout)
2691 DEFINE_V4L_STUB_FUNC(enum_framesizes)
2692 DEFINE_V4L_STUB_FUNC(enum_frameintervals)
2693 DEFINE_V4L_STUB_FUNC(g_enc_index)
2694 DEFINE_V4L_STUB_FUNC(encoder_cmd)
2695 DEFINE_V4L_STUB_FUNC(try_encoder_cmd)
2696 DEFINE_V4L_STUB_FUNC(decoder_cmd)
2697 DEFINE_V4L_STUB_FUNC(try_decoder_cmd)
2698 DEFINE_V4L_STUB_FUNC(s_dv_timings)
2699 DEFINE_V4L_STUB_FUNC(g_dv_timings)
2700 DEFINE_V4L_STUB_FUNC(enum_dv_timings)
2701 DEFINE_V4L_STUB_FUNC(query_dv_timings)
2702 DEFINE_V4L_STUB_FUNC(dv_timings_cap)
2704 static const struct v4l2_ioctl_info v4l2_ioctls[] = {
2705 IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
2706 IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)),
2707 IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0),
2708 IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
2709 IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2710 IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
2711 IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0),
2712 IOCTL_INFO(VIDIOC_S_FBUF, v4l_stub_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
2713 IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO),
2714 IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),
2715 IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)),
2716 IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),
2717 IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2718 IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2719 IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
2720 IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
2721 IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0),
2722 IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
2723 IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
2724 IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
2725 IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
2726 IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
2727 IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
2728 IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
2729 IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0),
2730 IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO),
2731 IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
2732 IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
2733 IOCTL_INFO(VIDIOC_G_INPUT, v4l_stub_g_input, v4l_print_u32, 0),
2734 IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
2735 IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY),
2736 IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY),
2737 IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_stub_g_output, v4l_print_u32, 0),
2738 IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
2739 IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
2740 IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0),
2741 IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO),
2742 IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
2743 IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
2744 IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
2745 IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
2746 IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
2747 IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
2748 IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
2749 IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)),
2750 IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)),
2751 IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0),
2752 IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
2753 IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
2754 IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
2755 IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
2756 IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
2757 IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
2758 IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
2759 IOCTL_INFO(VIDIOC_G_SLICED_VBI_CAP, v4l_g_sliced_vbi_cap, v4l_print_sliced_vbi_cap, INFO_FL_CLEAR(v4l2_sliced_vbi_cap, type)),
2760 IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
2761 IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2762 IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL),
2763 IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2764 IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
2765 IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
2766 IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0),
2767 IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2768 IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2769 IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
2770 IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0),
2771 IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
2772 IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
2773 IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
2774 IOCTL_INFO(VIDIOC_S_DV_TIMINGS, v4l_stub_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_dv_timings, bt.flags)),
2775 IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0),
2776 IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
2777 IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
2778 IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
2779 IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2780 IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
2781 IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)),
2782 IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY),
2783 IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)),
2784 IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
2785 IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
2786 IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
2788 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
2790 static bool v4l2_is_known_ioctl(unsigned int cmd)
2792 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2794 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
2797 static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev,
2798 struct v4l2_fh *vfh, unsigned int cmd,
2801 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2803 #if IS_ENABLED(CONFIG_V4L2_MEM2MEM_DEV)
2804 if (vfh && vfh->m2m_ctx &&
2805 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) {
2806 if (vfh->m2m_ctx->q_lock)
2807 return vfh->m2m_ctx->q_lock;
2810 if (vdev->queue && vdev->queue->lock &&
2811 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
2812 return vdev->queue->lock;
2816 /* Common ioctl debug function. This function can be used by
2817 external ioctl messages as well as internal V4L ioctl */
2818 void v4l_printk_ioctl(const char *prefix, unsigned int cmd)
2820 const char *dir, *type;
2823 printk(KERN_DEBUG "%s: ", prefix);
2825 switch (_IOC_TYPE(cmd)) {
2830 if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
2834 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
2841 switch (_IOC_DIR(cmd)) {
2842 case _IOC_NONE: dir = "--"; break;
2843 case _IOC_READ: dir = "r-"; break;
2844 case _IOC_WRITE: dir = "-w"; break;
2845 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
2846 default: dir = "*ERR*"; break;
2848 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
2849 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
2851 EXPORT_SYMBOL(v4l_printk_ioctl);
2853 static long __video_do_ioctl(struct file *file,
2854 unsigned int cmd, void *arg)
2856 struct video_device *vfd = video_devdata(file);
2857 struct mutex *req_queue_lock = NULL;
2858 struct mutex *lock; /* ioctl serialization mutex */
2859 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
2860 bool write_only = false;
2861 struct v4l2_ioctl_info default_info;
2862 const struct v4l2_ioctl_info *info;
2863 void *fh = file->private_data;
2864 struct v4l2_fh *vfh = NULL;
2865 int dev_debug = vfd->dev_debug;
2869 pr_warn("%s: has no ioctl_ops.\n",
2870 video_device_node_name(vfd));
2874 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
2875 vfh = file->private_data;
2878 * We need to serialize streamon/off with queueing new requests.
2879 * These ioctls may trigger the cancellation of a streaming
2880 * operation, and that should not be mixed with queueing a new
2881 * request at the same time.
2883 if (v4l2_device_supports_requests(vfd->v4l2_dev) &&
2884 (cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF)) {
2885 req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex;
2887 if (mutex_lock_interruptible(req_queue_lock))
2888 return -ERESTARTSYS;
2891 lock = v4l2_ioctl_get_lock(vfd, vfh, cmd, arg);
2893 if (lock && mutex_lock_interruptible(lock)) {
2895 mutex_unlock(req_queue_lock);
2896 return -ERESTARTSYS;
2899 if (!video_is_registered(vfd)) {
2904 if (v4l2_is_known_ioctl(cmd)) {
2905 info = &v4l2_ioctls[_IOC_NR(cmd)];
2907 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) &&
2908 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
2911 if (vfh && (info->flags & INFO_FL_PRIO)) {
2912 ret = v4l2_prio_check(vfd->prio, vfh->prio);
2917 default_info.ioctl = cmd;
2918 default_info.flags = 0;
2919 default_info.debug = v4l_print_default;
2920 info = &default_info;
2923 write_only = _IOC_DIR(cmd) == _IOC_WRITE;
2924 if (info != &default_info) {
2925 ret = info->func(ops, file, fh, arg);
2926 } else if (!ops->vidioc_default) {
2929 ret = ops->vidioc_default(file, fh,
2930 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
2935 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) {
2936 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) &&
2937 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF))
2940 v4l_printk_ioctl(video_device_node_name(vfd), cmd);
2942 pr_cont(": error %ld", ret);
2943 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG))
2945 else if (_IOC_DIR(cmd) == _IOC_NONE)
2946 info->debug(arg, write_only);
2949 info->debug(arg, write_only);
2957 mutex_unlock(req_queue_lock);
2961 static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
2962 void __user **user_ptr, void ***kernel_ptr)
2967 case VIDIOC_PREPARE_BUF:
2968 case VIDIOC_QUERYBUF:
2970 case VIDIOC_DQBUF: {
2971 struct v4l2_buffer *buf = parg;
2973 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
2974 if (buf->length > VIDEO_MAX_PLANES) {
2978 *user_ptr = (void __user *)buf->m.planes;
2979 *kernel_ptr = (void **)&buf->m.planes;
2980 *array_size = sizeof(struct v4l2_plane) * buf->length;
2987 case VIDIOC_S_EDID: {
2988 struct v4l2_edid *edid = parg;
2991 if (edid->blocks > 256) {
2995 *user_ptr = (void __user *)edid->edid;
2996 *kernel_ptr = (void **)&edid->edid;
2997 *array_size = edid->blocks * 128;
3003 case VIDIOC_S_EXT_CTRLS:
3004 case VIDIOC_G_EXT_CTRLS:
3005 case VIDIOC_TRY_EXT_CTRLS: {
3006 struct v4l2_ext_controls *ctrls = parg;
3008 if (ctrls->count != 0) {
3009 if (ctrls->count > V4L2_CID_MAX_CTRLS) {
3013 *user_ptr = (void __user *)ctrls->controls;
3014 *kernel_ptr = (void **)&ctrls->controls;
3015 *array_size = sizeof(struct v4l2_ext_control)
3026 static unsigned int video_translate_cmd(unsigned int cmd)
3029 #ifdef CONFIG_COMPAT_32BIT_TIME
3030 case VIDIOC_DQEVENT_TIME32:
3031 return VIDIOC_DQEVENT;
3032 case VIDIOC_QUERYBUF_TIME32:
3033 return VIDIOC_QUERYBUF;
3034 case VIDIOC_QBUF_TIME32:
3036 case VIDIOC_DQBUF_TIME32:
3037 return VIDIOC_DQBUF;
3038 case VIDIOC_PREPARE_BUF_TIME32:
3039 return VIDIOC_PREPARE_BUF;
3046 static int video_get_user(void __user *arg, void *parg, unsigned int cmd,
3049 unsigned int n = _IOC_SIZE(cmd);
3051 if (!(_IOC_DIR(cmd) & _IOC_WRITE)) {
3052 /* read-only ioctl */
3058 #ifdef CONFIG_COMPAT_32BIT_TIME
3059 case VIDIOC_QUERYBUF_TIME32:
3060 case VIDIOC_QBUF_TIME32:
3061 case VIDIOC_DQBUF_TIME32:
3062 case VIDIOC_PREPARE_BUF_TIME32: {
3063 struct v4l2_buffer_time32 vb32;
3064 struct v4l2_buffer *vb = parg;
3066 if (copy_from_user(&vb32, arg, sizeof(vb32)))
3069 *vb = (struct v4l2_buffer) {
3070 .index = vb32.index,
3072 .bytesused = vb32.bytesused,
3073 .flags = vb32.flags,
3074 .field = vb32.field,
3075 .timestamp.tv_sec = vb32.timestamp.tv_sec,
3076 .timestamp.tv_usec = vb32.timestamp.tv_usec,
3077 .timecode = vb32.timecode,
3078 .sequence = vb32.sequence,
3079 .memory = vb32.memory,
3080 .m.userptr = vb32.m.userptr,
3081 .length = vb32.length,
3082 .request_fd = vb32.request_fd,
3085 if (cmd == VIDIOC_QUERYBUF_TIME32)
3093 * In some cases, only a few fields are used as input,
3094 * i.e. when the app sets "index" and then the driver
3095 * fills in the rest of the structure for the thing
3096 * with that index. We only need to copy up the first
3099 if (v4l2_is_known_ioctl(cmd)) {
3100 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags;
3102 if (flags & INFO_FL_CLEAR_MASK)
3103 n = (flags & INFO_FL_CLEAR_MASK) >> 16;
3104 *always_copy = flags & INFO_FL_ALWAYS_COPY;
3107 if (copy_from_user(parg, (void __user *)arg, n))
3110 /* zero out anything we don't copy from userspace */
3111 if (n < _IOC_SIZE(cmd))
3112 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n);
3119 static int video_put_user(void __user *arg, void *parg, unsigned int cmd)
3121 if (!(_IOC_DIR(cmd) & _IOC_READ))
3125 #ifdef CONFIG_COMPAT_32BIT_TIME
3126 case VIDIOC_DQEVENT_TIME32: {
3127 struct v4l2_event *ev = parg;
3128 struct v4l2_event_time32 ev32 = {
3130 .pending = ev->pending,
3131 .sequence = ev->sequence,
3132 .timestamp.tv_sec = ev->timestamp.tv_sec,
3133 .timestamp.tv_nsec = ev->timestamp.tv_nsec,
3137 memcpy(&ev32.u, &ev->u, sizeof(ev->u));
3138 memcpy(&ev32.reserved, &ev->reserved, sizeof(ev->reserved));
3140 if (copy_to_user(arg, &ev32, sizeof(ev32)))
3144 case VIDIOC_QUERYBUF_TIME32:
3145 case VIDIOC_QBUF_TIME32:
3146 case VIDIOC_DQBUF_TIME32:
3147 case VIDIOC_PREPARE_BUF_TIME32: {
3148 struct v4l2_buffer *vb = parg;
3149 struct v4l2_buffer_time32 vb32 = {
3152 .bytesused = vb->bytesused,
3155 .timestamp.tv_sec = vb->timestamp.tv_sec,
3156 .timestamp.tv_usec = vb->timestamp.tv_usec,
3157 .timecode = vb->timecode,
3158 .sequence = vb->sequence,
3159 .memory = vb->memory,
3160 .m.userptr = vb->m.userptr,
3161 .length = vb->length,
3162 .request_fd = vb->request_fd,
3165 if (copy_to_user(arg, &vb32, sizeof(vb32)))
3171 /* Copy results into user buffer */
3172 if (copy_to_user(arg, parg, _IOC_SIZE(cmd)))
3181 video_usercopy(struct file *file, unsigned int orig_cmd, unsigned long arg,
3186 void *parg = (void *)arg;
3188 bool has_array_args;
3189 bool always_copy = false;
3190 size_t array_size = 0;
3191 void __user *user_ptr = NULL;
3192 void **kernel_ptr = NULL;
3193 unsigned int cmd = video_translate_cmd(orig_cmd);
3194 const size_t ioc_size = _IOC_SIZE(cmd);
3196 /* Copy arguments into temp kernel buffer */
3197 if (_IOC_DIR(cmd) != _IOC_NONE) {
3198 if (ioc_size <= sizeof(sbuf)) {
3201 /* too big to allocate from stack */
3202 mbuf = kvmalloc(ioc_size, GFP_KERNEL);
3208 err = video_get_user((void __user *)arg, parg, orig_cmd,
3214 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
3217 has_array_args = err;
3219 if (has_array_args) {
3221 * When adding new types of array args, make sure that the
3222 * parent argument to ioctl (which contains the pointer to the
3223 * array) fits into sbuf (so that mbuf will still remain
3224 * unused up to here).
3226 mbuf = kvmalloc(array_size, GFP_KERNEL);
3229 goto out_array_args;
3231 if (copy_from_user(mbuf, user_ptr, array_size))
3232 goto out_array_args;
3237 err = func(file, cmd, parg);
3238 if (err == -ENOTTY || err == -ENOIOCTLCMD) {
3244 if (cmd == VIDIOC_DQBUF)
3245 trace_v4l2_dqbuf(video_devdata(file)->minor, parg);
3246 else if (cmd == VIDIOC_QBUF)
3247 trace_v4l2_qbuf(video_devdata(file)->minor, parg);
3250 if (has_array_args) {
3251 *kernel_ptr = (void __force *)user_ptr;
3252 if (copy_to_user(user_ptr, mbuf, array_size))
3254 goto out_array_args;
3257 * Some ioctls can return an error, but still have valid
3258 * results that must be returned.
3260 if (err < 0 && !always_copy)
3264 if (video_put_user((void __user *)arg, parg, orig_cmd))
3271 long video_ioctl2(struct file *file,
3272 unsigned int cmd, unsigned long arg)
3274 return video_usercopy(file, cmd, arg, __video_do_ioctl);
3276 EXPORT_SYMBOL(video_ioctl2);