2 * Video capture interface for Linux version 2
4 * A generic framework to process V4L2 ioctl commands.
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
11 * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1)
12 * Mauro Carvalho Chehab <mchehab@infradead.org> (version 2)
16 #include <linux/module.h>
17 #include <linux/slab.h>
18 #include <linux/types.h>
19 #include <linux/kernel.h>
20 #include <linux/version.h>
22 #include <linux/videodev2.h>
24 #include <media/v4l2-common.h>
25 #include <media/v4l2-ioctl.h>
26 #include <media/v4l2-ctrls.h>
27 #include <media/v4l2-fh.h>
28 #include <media/v4l2-event.h>
29 #include <media/v4l2-device.h>
30 #include <media/videobuf2-v4l2.h>
31 #include <media/v4l2-mc.h>
33 #include <trace/events/v4l2.h>
35 /* Zero out the end of the struct pointed to by p. Everything after, but
36 * not including, the specified field is cleared. */
37 #define CLEAR_AFTER_FIELD(p, field) \
38 memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \
39 0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field))
41 #define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls)
48 static const struct std_descr standards[] = {
49 { V4L2_STD_NTSC, "NTSC" },
50 { V4L2_STD_NTSC_M, "NTSC-M" },
51 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" },
52 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" },
53 { V4L2_STD_NTSC_443, "NTSC-443" },
54 { V4L2_STD_PAL, "PAL" },
55 { V4L2_STD_PAL_BG, "PAL-BG" },
56 { V4L2_STD_PAL_B, "PAL-B" },
57 { V4L2_STD_PAL_B1, "PAL-B1" },
58 { V4L2_STD_PAL_G, "PAL-G" },
59 { V4L2_STD_PAL_H, "PAL-H" },
60 { V4L2_STD_PAL_I, "PAL-I" },
61 { V4L2_STD_PAL_DK, "PAL-DK" },
62 { V4L2_STD_PAL_D, "PAL-D" },
63 { V4L2_STD_PAL_D1, "PAL-D1" },
64 { V4L2_STD_PAL_K, "PAL-K" },
65 { V4L2_STD_PAL_M, "PAL-M" },
66 { V4L2_STD_PAL_N, "PAL-N" },
67 { V4L2_STD_PAL_Nc, "PAL-Nc" },
68 { V4L2_STD_PAL_60, "PAL-60" },
69 { V4L2_STD_SECAM, "SECAM" },
70 { V4L2_STD_SECAM_B, "SECAM-B" },
71 { V4L2_STD_SECAM_G, "SECAM-G" },
72 { V4L2_STD_SECAM_H, "SECAM-H" },
73 { V4L2_STD_SECAM_DK, "SECAM-DK" },
74 { V4L2_STD_SECAM_D, "SECAM-D" },
75 { V4L2_STD_SECAM_K, "SECAM-K" },
76 { V4L2_STD_SECAM_K1, "SECAM-K1" },
77 { V4L2_STD_SECAM_L, "SECAM-L" },
78 { V4L2_STD_SECAM_LC, "SECAM-Lc" },
82 /* video4linux standard ID conversion to standard name
84 const char *v4l2_norm_to_name(v4l2_std_id id)
89 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
90 64 bit comparations. So, on that architecture, with some gcc
91 variants, compilation fails. Currently, the max value is 30bit wide.
95 for (i = 0; standards[i].std; i++)
96 if (myid == standards[i].std)
98 return standards[i].descr;
100 EXPORT_SYMBOL(v4l2_norm_to_name);
102 /* Returns frame period for the given standard */
103 void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod)
105 if (id & V4L2_STD_525_60) {
106 frameperiod->numerator = 1001;
107 frameperiod->denominator = 30000;
109 frameperiod->numerator = 1;
110 frameperiod->denominator = 25;
113 EXPORT_SYMBOL(v4l2_video_std_frame_period);
115 /* Fill in the fields of a v4l2_standard structure according to the
116 'id' and 'transmission' parameters. Returns negative on error. */
117 int v4l2_video_std_construct(struct v4l2_standard *vs,
118 int id, const char *name)
121 v4l2_video_std_frame_period(id, &vs->frameperiod);
122 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625;
123 strlcpy(vs->name, name, sizeof(vs->name));
126 EXPORT_SYMBOL(v4l2_video_std_construct);
128 /* ----------------------------------------------------------------- */
129 /* some arrays for pretty-printing debug messages of enum types */
131 const char *v4l2_field_names[] = {
132 [V4L2_FIELD_ANY] = "any",
133 [V4L2_FIELD_NONE] = "none",
134 [V4L2_FIELD_TOP] = "top",
135 [V4L2_FIELD_BOTTOM] = "bottom",
136 [V4L2_FIELD_INTERLACED] = "interlaced",
137 [V4L2_FIELD_SEQ_TB] = "seq-tb",
138 [V4L2_FIELD_SEQ_BT] = "seq-bt",
139 [V4L2_FIELD_ALTERNATE] = "alternate",
140 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",
141 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",
143 EXPORT_SYMBOL(v4l2_field_names);
145 const char *v4l2_type_names[] = {
147 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap",
148 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay",
149 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out",
150 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap",
151 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out",
152 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",
153 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out",
154 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay",
155 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane",
156 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane",
157 [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap",
158 [V4L2_BUF_TYPE_SDR_OUTPUT] = "sdr-out",
159 [V4L2_BUF_TYPE_META_CAPTURE] = "meta-cap",
161 EXPORT_SYMBOL(v4l2_type_names);
163 static const char *v4l2_memory_names[] = {
164 [V4L2_MEMORY_MMAP] = "mmap",
165 [V4L2_MEMORY_USERPTR] = "userptr",
166 [V4L2_MEMORY_OVERLAY] = "overlay",
167 [V4L2_MEMORY_DMABUF] = "dmabuf",
170 #define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown")
172 /* ------------------------------------------------------------------ */
173 /* debug help functions */
175 static void v4l_print_querycap(const void *arg, bool write_only)
177 const struct v4l2_capability *p = arg;
179 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, capabilities=0x%08x, device_caps=0x%08x\n",
180 (int)sizeof(p->driver), p->driver,
181 (int)sizeof(p->card), p->card,
182 (int)sizeof(p->bus_info), p->bus_info,
183 p->version, p->capabilities, p->device_caps);
186 static void v4l_print_enuminput(const void *arg, bool write_only)
188 const struct v4l2_input *p = arg;
190 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, std=0x%08Lx, status=0x%x, capabilities=0x%x\n",
191 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
192 p->tuner, (unsigned long long)p->std, p->status,
196 static void v4l_print_enumoutput(const void *arg, bool write_only)
198 const struct v4l2_output *p = arg;
200 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, modulator=%u, std=0x%08Lx, capabilities=0x%x\n",
201 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
202 p->modulator, (unsigned long long)p->std, p->capabilities);
205 static void v4l_print_audio(const void *arg, bool write_only)
207 const struct v4l2_audio *p = arg;
210 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode);
212 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
213 p->index, (int)sizeof(p->name), p->name,
214 p->capability, p->mode);
217 static void v4l_print_audioout(const void *arg, bool write_only)
219 const struct v4l2_audioout *p = arg;
222 pr_cont("index=%u\n", p->index);
224 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
225 p->index, (int)sizeof(p->name), p->name,
226 p->capability, p->mode);
229 static void v4l_print_fmtdesc(const void *arg, bool write_only)
231 const struct v4l2_fmtdesc *p = arg;
233 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%c%c%c%c, description='%.*s'\n",
234 p->index, prt_names(p->type, v4l2_type_names),
235 p->flags, (p->pixelformat & 0xff),
236 (p->pixelformat >> 8) & 0xff,
237 (p->pixelformat >> 16) & 0xff,
238 (p->pixelformat >> 24) & 0xff,
239 (int)sizeof(p->description), p->description);
242 static void v4l_print_format(const void *arg, bool write_only)
244 const struct v4l2_format *p = arg;
245 const struct v4l2_pix_format *pix;
246 const struct v4l2_pix_format_mplane *mp;
247 const struct v4l2_vbi_format *vbi;
248 const struct v4l2_sliced_vbi_format *sliced;
249 const struct v4l2_window *win;
250 const struct v4l2_sdr_format *sdr;
251 const struct v4l2_meta_format *meta;
255 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
257 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
258 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
260 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",
261 pix->width, pix->height,
262 (pix->pixelformat & 0xff),
263 (pix->pixelformat >> 8) & 0xff,
264 (pix->pixelformat >> 16) & 0xff,
265 (pix->pixelformat >> 24) & 0xff,
266 prt_names(pix->field, v4l2_field_names),
267 pix->bytesperline, pix->sizeimage,
268 pix->colorspace, pix->flags, pix->ycbcr_enc,
269 pix->quantization, pix->xfer_func);
271 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
272 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
274 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",
275 mp->width, mp->height,
276 (mp->pixelformat & 0xff),
277 (mp->pixelformat >> 8) & 0xff,
278 (mp->pixelformat >> 16) & 0xff,
279 (mp->pixelformat >> 24) & 0xff,
280 prt_names(mp->field, v4l2_field_names),
281 mp->colorspace, mp->num_planes, mp->flags,
282 mp->ycbcr_enc, mp->quantization, mp->xfer_func);
283 planes = min_t(u32, mp->num_planes, VIDEO_MAX_PLANES);
284 for (i = 0; i < planes; i++)
285 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i,
286 mp->plane_fmt[i].bytesperline,
287 mp->plane_fmt[i].sizeimage);
289 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
290 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
292 /* Note: we can't print the clip list here since the clips
293 * pointer is a userspace pointer, not a kernelspace
295 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",
296 win->w.width, win->w.height, win->w.left, win->w.top,
297 prt_names(win->field, v4l2_field_names),
298 win->chromakey, win->clipcount, win->clips,
299 win->bitmap, win->global_alpha);
301 case V4L2_BUF_TYPE_VBI_CAPTURE:
302 case V4L2_BUF_TYPE_VBI_OUTPUT:
304 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n",
305 vbi->sampling_rate, vbi->offset,
306 vbi->samples_per_line,
307 (vbi->sample_format & 0xff),
308 (vbi->sample_format >> 8) & 0xff,
309 (vbi->sample_format >> 16) & 0xff,
310 (vbi->sample_format >> 24) & 0xff,
311 vbi->start[0], vbi->start[1],
312 vbi->count[0], vbi->count[1]);
314 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
315 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
316 sliced = &p->fmt.sliced;
317 pr_cont(", service_set=0x%08x, io_size=%d\n",
318 sliced->service_set, sliced->io_size);
319 for (i = 0; i < 24; i++)
320 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
321 sliced->service_lines[0][i],
322 sliced->service_lines[1][i]);
324 case V4L2_BUF_TYPE_SDR_CAPTURE:
325 case V4L2_BUF_TYPE_SDR_OUTPUT:
327 pr_cont(", pixelformat=%c%c%c%c\n",
328 (sdr->pixelformat >> 0) & 0xff,
329 (sdr->pixelformat >> 8) & 0xff,
330 (sdr->pixelformat >> 16) & 0xff,
331 (sdr->pixelformat >> 24) & 0xff);
333 case V4L2_BUF_TYPE_META_CAPTURE:
335 pr_cont(", dataformat=%c%c%c%c, buffersize=%u\n",
336 (meta->dataformat >> 0) & 0xff,
337 (meta->dataformat >> 8) & 0xff,
338 (meta->dataformat >> 16) & 0xff,
339 (meta->dataformat >> 24) & 0xff,
345 static void v4l_print_framebuffer(const void *arg, bool write_only)
347 const struct v4l2_framebuffer *p = arg;
349 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",
350 p->capability, p->flags, p->base,
351 p->fmt.width, p->fmt.height,
352 (p->fmt.pixelformat & 0xff),
353 (p->fmt.pixelformat >> 8) & 0xff,
354 (p->fmt.pixelformat >> 16) & 0xff,
355 (p->fmt.pixelformat >> 24) & 0xff,
356 p->fmt.bytesperline, p->fmt.sizeimage,
360 static void v4l_print_buftype(const void *arg, bool write_only)
362 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names));
365 static void v4l_print_modulator(const void *arg, bool write_only)
367 const struct v4l2_modulator *p = arg;
370 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans);
372 pr_cont("index=%u, name=%.*s, capability=0x%x, rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
373 p->index, (int)sizeof(p->name), p->name, p->capability,
374 p->rangelow, p->rangehigh, p->txsubchans);
377 static void v4l_print_tuner(const void *arg, bool write_only)
379 const struct v4l2_tuner *p = arg;
382 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode);
384 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",
385 p->index, (int)sizeof(p->name), p->name, p->type,
386 p->capability, p->rangelow,
387 p->rangehigh, p->signal, p->afc,
388 p->rxsubchans, p->audmode);
391 static void v4l_print_frequency(const void *arg, bool write_only)
393 const struct v4l2_frequency *p = arg;
395 pr_cont("tuner=%u, type=%u, frequency=%u\n",
396 p->tuner, p->type, p->frequency);
399 static void v4l_print_standard(const void *arg, bool write_only)
401 const struct v4l2_standard *p = arg;
403 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, framelines=%u\n",
405 (unsigned long long)p->id, (int)sizeof(p->name), p->name,
406 p->frameperiod.numerator,
407 p->frameperiod.denominator,
411 static void v4l_print_std(const void *arg, bool write_only)
413 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg);
416 static void v4l_print_hw_freq_seek(const void *arg, bool write_only)
418 const struct v4l2_hw_freq_seek *p = arg;
420 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, rangelow=%u, rangehigh=%u\n",
421 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing,
422 p->rangelow, p->rangehigh);
425 static void v4l_print_requestbuffers(const void *arg, bool write_only)
427 const struct v4l2_requestbuffers *p = arg;
429 pr_cont("count=%d, type=%s, memory=%s\n",
431 prt_names(p->type, v4l2_type_names),
432 prt_names(p->memory, v4l2_memory_names));
435 static void v4l_print_buffer(const void *arg, bool write_only)
437 const struct v4l2_buffer *p = arg;
438 const struct v4l2_timecode *tc = &p->timecode;
439 const struct v4l2_plane *plane;
442 pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, flags=0x%08x, field=%s, sequence=%d, memory=%s",
443 p->timestamp.tv_sec / 3600,
444 (int)(p->timestamp.tv_sec / 60) % 60,
445 (int)(p->timestamp.tv_sec % 60),
446 (long)p->timestamp.tv_usec,
448 prt_names(p->type, v4l2_type_names),
449 p->flags, prt_names(p->field, v4l2_field_names),
450 p->sequence, prt_names(p->memory, v4l2_memory_names));
452 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
454 for (i = 0; i < p->length; ++i) {
455 plane = &p->m.planes[i];
457 "plane %d: bytesused=%d, data_offset=0x%08x, offset/userptr=0x%lx, length=%d\n",
458 i, plane->bytesused, plane->data_offset,
459 plane->m.userptr, plane->length);
462 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n",
463 p->bytesused, p->m.userptr, p->length);
466 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, flags=0x%08x, frames=%d, userbits=0x%08x\n",
467 tc->hours, tc->minutes, tc->seconds,
468 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
471 static void v4l_print_exportbuffer(const void *arg, bool write_only)
473 const struct v4l2_exportbuffer *p = arg;
475 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n",
476 p->fd, prt_names(p->type, v4l2_type_names),
477 p->index, p->plane, p->flags);
480 static void v4l_print_create_buffers(const void *arg, bool write_only)
482 const struct v4l2_create_buffers *p = arg;
484 pr_cont("index=%d, count=%d, memory=%s, ",
486 prt_names(p->memory, v4l2_memory_names));
487 v4l_print_format(&p->format, write_only);
490 static void v4l_print_streamparm(const void *arg, bool write_only)
492 const struct v4l2_streamparm *p = arg;
494 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
496 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
497 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
498 const struct v4l2_captureparm *c = &p->parm.capture;
500 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, extendedmode=%d, readbuffers=%d\n",
501 c->capability, c->capturemode,
502 c->timeperframe.numerator, c->timeperframe.denominator,
503 c->extendedmode, c->readbuffers);
504 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
505 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
506 const struct v4l2_outputparm *c = &p->parm.output;
508 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, extendedmode=%d, writebuffers=%d\n",
509 c->capability, c->outputmode,
510 c->timeperframe.numerator, c->timeperframe.denominator,
511 c->extendedmode, c->writebuffers);
517 static void v4l_print_queryctrl(const void *arg, bool write_only)
519 const struct v4l2_queryctrl *p = arg;
521 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, step=%d, default=%d, flags=0x%08x\n",
522 p->id, p->type, (int)sizeof(p->name), p->name,
523 p->minimum, p->maximum,
524 p->step, p->default_value, p->flags);
527 static void v4l_print_query_ext_ctrl(const void *arg, bool write_only)
529 const struct v4l2_query_ext_ctrl *p = arg;
531 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",
532 p->id, p->type, (int)sizeof(p->name), p->name,
533 p->minimum, p->maximum,
534 p->step, p->default_value, p->flags,
535 p->elem_size, p->elems, p->nr_of_dims,
536 p->dims[0], p->dims[1], p->dims[2], p->dims[3]);
539 static void v4l_print_querymenu(const void *arg, bool write_only)
541 const struct v4l2_querymenu *p = arg;
543 pr_cont("id=0x%x, index=%d\n", p->id, p->index);
546 static void v4l_print_control(const void *arg, bool write_only)
548 const struct v4l2_control *p = arg;
550 pr_cont("id=0x%x, value=%d\n", p->id, p->value);
553 static void v4l_print_ext_controls(const void *arg, bool write_only)
555 const struct v4l2_ext_controls *p = arg;
558 pr_cont("which=0x%x, count=%d, error_idx=%d",
559 p->which, p->count, p->error_idx);
560 for (i = 0; i < p->count; i++) {
561 if (!p->controls[i].size)
562 pr_cont(", id/val=0x%x/0x%x",
563 p->controls[i].id, p->controls[i].value);
565 pr_cont(", id/size=0x%x/%u",
566 p->controls[i].id, p->controls[i].size);
571 static void v4l_print_cropcap(const void *arg, bool write_only)
573 const struct v4l2_cropcap *p = arg;
575 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, defrect wxh=%dx%d, x,y=%d,%d, pixelaspect %d/%d\n",
576 prt_names(p->type, v4l2_type_names),
577 p->bounds.width, p->bounds.height,
578 p->bounds.left, p->bounds.top,
579 p->defrect.width, p->defrect.height,
580 p->defrect.left, p->defrect.top,
581 p->pixelaspect.numerator, p->pixelaspect.denominator);
584 static void v4l_print_crop(const void *arg, bool write_only)
586 const struct v4l2_crop *p = arg;
588 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n",
589 prt_names(p->type, v4l2_type_names),
590 p->c.width, p->c.height,
591 p->c.left, p->c.top);
594 static void v4l_print_selection(const void *arg, bool write_only)
596 const struct v4l2_selection *p = arg;
598 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n",
599 prt_names(p->type, v4l2_type_names),
601 p->r.width, p->r.height, p->r.left, p->r.top);
604 static void v4l_print_jpegcompression(const void *arg, bool write_only)
606 const struct v4l2_jpegcompression *p = arg;
608 pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n",
609 p->quality, p->APPn, p->APP_len,
610 p->COM_len, p->jpeg_markers);
613 static void v4l_print_enc_idx(const void *arg, bool write_only)
615 const struct v4l2_enc_idx *p = arg;
617 pr_cont("entries=%d, entries_cap=%d\n",
618 p->entries, p->entries_cap);
621 static void v4l_print_encoder_cmd(const void *arg, bool write_only)
623 const struct v4l2_encoder_cmd *p = arg;
625 pr_cont("cmd=%d, flags=0x%x\n",
629 static void v4l_print_decoder_cmd(const void *arg, bool write_only)
631 const struct v4l2_decoder_cmd *p = arg;
633 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags);
635 if (p->cmd == V4L2_DEC_CMD_START)
636 pr_info("speed=%d, format=%u\n",
637 p->start.speed, p->start.format);
638 else if (p->cmd == V4L2_DEC_CMD_STOP)
639 pr_info("pts=%llu\n", p->stop.pts);
642 static void v4l_print_dbg_chip_info(const void *arg, bool write_only)
644 const struct v4l2_dbg_chip_info *p = arg;
646 pr_cont("type=%u, ", p->match.type);
647 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
648 pr_cont("name=%.*s, ",
649 (int)sizeof(p->match.name), p->match.name);
651 pr_cont("addr=%u, ", p->match.addr);
652 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name);
655 static void v4l_print_dbg_register(const void *arg, bool write_only)
657 const struct v4l2_dbg_register *p = arg;
659 pr_cont("type=%u, ", p->match.type);
660 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
661 pr_cont("name=%.*s, ",
662 (int)sizeof(p->match.name), p->match.name);
664 pr_cont("addr=%u, ", p->match.addr);
665 pr_cont("reg=0x%llx, val=0x%llx\n",
669 static void v4l_print_dv_timings(const void *arg, bool write_only)
671 const struct v4l2_dv_timings *p = arg;
674 case V4L2_DV_BT_656_1120:
675 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",
676 p->bt.interlaced, p->bt.pixelclock,
677 p->bt.width, p->bt.height,
678 p->bt.polarities, p->bt.hfrontporch,
679 p->bt.hsync, p->bt.hbackporch,
680 p->bt.vfrontporch, p->bt.vsync,
681 p->bt.vbackporch, p->bt.il_vfrontporch,
682 p->bt.il_vsync, p->bt.il_vbackporch,
683 p->bt.standards, p->bt.flags);
686 pr_cont("type=%d\n", p->type);
691 static void v4l_print_enum_dv_timings(const void *arg, bool write_only)
693 const struct v4l2_enum_dv_timings *p = arg;
695 pr_cont("index=%u, ", p->index);
696 v4l_print_dv_timings(&p->timings, write_only);
699 static void v4l_print_dv_timings_cap(const void *arg, bool write_only)
701 const struct v4l2_dv_timings_cap *p = arg;
704 case V4L2_DV_BT_656_1120:
705 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
706 p->bt.min_width, p->bt.max_width,
707 p->bt.min_height, p->bt.max_height,
708 p->bt.min_pixelclock, p->bt.max_pixelclock,
709 p->bt.standards, p->bt.capabilities);
712 pr_cont("type=%u\n", p->type);
717 static void v4l_print_frmsizeenum(const void *arg, bool write_only)
719 const struct v4l2_frmsizeenum *p = arg;
721 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u",
723 (p->pixel_format & 0xff),
724 (p->pixel_format >> 8) & 0xff,
725 (p->pixel_format >> 16) & 0xff,
726 (p->pixel_format >> 24) & 0xff,
729 case V4L2_FRMSIZE_TYPE_DISCRETE:
730 pr_cont(", wxh=%ux%u\n",
731 p->discrete.width, p->discrete.height);
733 case V4L2_FRMSIZE_TYPE_STEPWISE:
734 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n",
735 p->stepwise.min_width, p->stepwise.min_height,
736 p->stepwise.step_width, p->stepwise.step_height,
737 p->stepwise.max_width, p->stepwise.max_height);
739 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
747 static void v4l_print_frmivalenum(const void *arg, bool write_only)
749 const struct v4l2_frmivalenum *p = arg;
751 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u",
753 (p->pixel_format & 0xff),
754 (p->pixel_format >> 8) & 0xff,
755 (p->pixel_format >> 16) & 0xff,
756 (p->pixel_format >> 24) & 0xff,
757 p->width, p->height, p->type);
759 case V4L2_FRMIVAL_TYPE_DISCRETE:
760 pr_cont(", fps=%d/%d\n",
761 p->discrete.numerator,
762 p->discrete.denominator);
764 case V4L2_FRMIVAL_TYPE_STEPWISE:
765 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n",
766 p->stepwise.min.numerator,
767 p->stepwise.min.denominator,
768 p->stepwise.max.numerator,
769 p->stepwise.max.denominator,
770 p->stepwise.step.numerator,
771 p->stepwise.step.denominator);
773 case V4L2_FRMIVAL_TYPE_CONTINUOUS:
781 static void v4l_print_event(const void *arg, bool write_only)
783 const struct v4l2_event *p = arg;
784 const struct v4l2_event_ctrl *c;
786 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%lu.%9.9lu\n",
787 p->type, p->pending, p->sequence, p->id,
788 p->timestamp.tv_sec, p->timestamp.tv_nsec);
790 case V4L2_EVENT_VSYNC:
791 printk(KERN_DEBUG "field=%s\n",
792 prt_names(p->u.vsync.field, v4l2_field_names));
794 case V4L2_EVENT_CTRL:
796 printk(KERN_DEBUG "changes=0x%x, type=%u, ",
797 c->changes, c->type);
798 if (c->type == V4L2_CTRL_TYPE_INTEGER64)
799 pr_cont("value64=%lld, ", c->value64);
801 pr_cont("value=%d, ", c->value);
802 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n",
803 c->flags, c->minimum, c->maximum,
804 c->step, c->default_value);
806 case V4L2_EVENT_FRAME_SYNC:
807 pr_cont("frame_sequence=%u\n",
808 p->u.frame_sync.frame_sequence);
813 static void v4l_print_event_subscription(const void *arg, bool write_only)
815 const struct v4l2_event_subscription *p = arg;
817 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
818 p->type, p->id, p->flags);
821 static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only)
823 const struct v4l2_sliced_vbi_cap *p = arg;
826 pr_cont("type=%s, service_set=0x%08x\n",
827 prt_names(p->type, v4l2_type_names), p->service_set);
828 for (i = 0; i < 24; i++)
829 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
830 p->service_lines[0][i],
831 p->service_lines[1][i]);
834 static void v4l_print_freq_band(const void *arg, bool write_only)
836 const struct v4l2_frequency_band *p = arg;
838 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n",
839 p->tuner, p->type, p->index,
840 p->capability, p->rangelow,
841 p->rangehigh, p->modulation);
844 static void v4l_print_edid(const void *arg, bool write_only)
846 const struct v4l2_edid *p = arg;
848 pr_cont("pad=%u, start_block=%u, blocks=%u\n",
849 p->pad, p->start_block, p->blocks);
852 static void v4l_print_u32(const void *arg, bool write_only)
854 pr_cont("value=%u\n", *(const u32 *)arg);
857 static void v4l_print_newline(const void *arg, bool write_only)
862 static void v4l_print_default(const void *arg, bool write_only)
864 pr_cont("driver-specific ioctl\n");
867 static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
871 /* zero the reserved fields */
872 c->reserved[0] = c->reserved[1] = 0;
873 for (i = 0; i < c->count; i++)
874 c->controls[i].reserved2[0] = 0;
876 /* V4L2_CID_PRIVATE_BASE cannot be used as control class
877 when using extended controls.
878 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
879 is it allowed for backwards compatibility.
881 if (!allow_priv && c->which == V4L2_CID_PRIVATE_BASE)
885 /* Check that all controls are from the same control class. */
886 for (i = 0; i < c->count; i++) {
887 if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) {
895 static int check_fmt(struct file *file, enum v4l2_buf_type type)
897 struct video_device *vfd = video_devdata(file);
898 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
899 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
900 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI;
901 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
902 bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH;
903 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
904 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
910 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
911 if ((is_vid || is_tch) && is_rx &&
912 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane))
915 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
916 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_cap_mplane)
919 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
920 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay)
923 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
924 if (is_vid && is_tx &&
925 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane))
928 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
929 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane)
932 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
933 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay)
936 case V4L2_BUF_TYPE_VBI_CAPTURE:
937 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap)
940 case V4L2_BUF_TYPE_VBI_OUTPUT:
941 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out)
944 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
945 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap)
948 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
949 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out)
952 case V4L2_BUF_TYPE_SDR_CAPTURE:
953 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap)
956 case V4L2_BUF_TYPE_SDR_OUTPUT:
957 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out)
960 case V4L2_BUF_TYPE_META_CAPTURE:
961 if (is_vid && is_rx && ops->vidioc_g_fmt_meta_cap)
970 static void v4l_sanitize_format(struct v4l2_format *fmt)
975 * The v4l2_pix_format structure has been extended with fields that were
976 * not previously required to be set to zero by applications. The priv
977 * field, when set to a magic value, indicates the the extended fields
978 * are valid. Otherwise they will contain undefined values. To simplify
979 * the API towards drivers zero the extended fields and set the priv
980 * field to the magic value when the extended pixel format structure
981 * isn't used by applications.
984 if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
985 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
988 if (fmt->fmt.pix.priv == V4L2_PIX_FMT_PRIV_MAGIC)
991 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
993 offset = offsetof(struct v4l2_pix_format, priv)
994 + sizeof(fmt->fmt.pix.priv);
995 memset(((void *)&fmt->fmt.pix) + offset, 0,
996 sizeof(fmt->fmt.pix) - offset);
999 static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
1000 struct file *file, void *fh, void *arg)
1002 struct v4l2_capability *cap = (struct v4l2_capability *)arg;
1003 struct video_device *vfd = video_devdata(file);
1006 cap->version = LINUX_VERSION_CODE;
1007 cap->device_caps = vfd->device_caps;
1008 cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS;
1010 ret = ops->vidioc_querycap(file, fh, cap);
1012 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT;
1014 * Drivers MUST fill in device_caps, so check for this and
1015 * warn if it was forgotten.
1017 WARN(!(cap->capabilities & V4L2_CAP_DEVICE_CAPS) ||
1018 !cap->device_caps, "Bad caps for driver %s, %x %x",
1019 cap->driver, cap->capabilities, cap->device_caps);
1020 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT;
1025 static int v4l_s_input(const struct v4l2_ioctl_ops *ops,
1026 struct file *file, void *fh, void *arg)
1028 struct video_device *vfd = video_devdata(file);
1031 ret = v4l_enable_media_source(vfd);
1034 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg);
1037 static int v4l_s_output(const struct v4l2_ioctl_ops *ops,
1038 struct file *file, void *fh, void *arg)
1040 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg);
1043 static int v4l_g_priority(const struct v4l2_ioctl_ops *ops,
1044 struct file *file, void *fh, void *arg)
1046 struct video_device *vfd;
1049 vfd = video_devdata(file);
1050 *p = v4l2_prio_max(vfd->prio);
1054 static int v4l_s_priority(const struct v4l2_ioctl_ops *ops,
1055 struct file *file, void *fh, void *arg)
1057 struct video_device *vfd;
1058 struct v4l2_fh *vfh;
1061 vfd = video_devdata(file);
1062 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
1064 vfh = file->private_data;
1065 return v4l2_prio_change(vfd->prio, &vfh->prio, *p);
1068 static int v4l_enuminput(const struct v4l2_ioctl_ops *ops,
1069 struct file *file, void *fh, void *arg)
1071 struct video_device *vfd = video_devdata(file);
1072 struct v4l2_input *p = arg;
1075 * We set the flags for CAP_DV_TIMINGS &
1076 * CAP_STD here based on ioctl handler provided by the
1077 * driver. If the driver doesn't support these
1078 * for a specific input, it must override these flags.
1080 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1081 p->capabilities |= V4L2_IN_CAP_STD;
1083 return ops->vidioc_enum_input(file, fh, p);
1086 static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops,
1087 struct file *file, void *fh, void *arg)
1089 struct video_device *vfd = video_devdata(file);
1090 struct v4l2_output *p = arg;
1093 * We set the flags for CAP_DV_TIMINGS &
1094 * CAP_STD here based on ioctl handler provided by the
1095 * driver. If the driver doesn't support these
1096 * for a specific output, it must override these flags.
1098 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1099 p->capabilities |= V4L2_OUT_CAP_STD;
1101 return ops->vidioc_enum_output(file, fh, p);
1104 static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
1106 const unsigned sz = sizeof(fmt->description);
1107 const char *descr = NULL;
1111 * We depart from the normal coding style here since the descriptions
1112 * should be aligned so it is easy to see which descriptions will be
1113 * longer than 31 characters (the max length for a description).
1114 * And frankly, this is easier to read anyway.
1116 * Note that gcc will use O(log N) comparisons to find the right case.
1118 switch (fmt->pixelformat) {
1119 /* Max description length mask: descr = "0123456789012345678901234567890" */
1120 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break;
1121 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break;
1122 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break;
1123 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break;
1124 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break;
1125 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break;
1126 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break;
1127 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break;
1128 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break;
1129 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break;
1130 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break;
1131 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break;
1132 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break;
1133 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break;
1134 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break;
1135 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break;
1136 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break;
1137 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break;
1138 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break;
1139 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break;
1140 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break;
1141 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break;
1142 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break;
1143 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break;
1144 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break;
1145 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break;
1146 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break;
1147 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break;
1148 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break;
1149 case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break;
1150 case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break;
1151 case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break;
1152 case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break;
1153 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break;
1154 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break;
1155 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break;
1156 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break;
1157 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break;
1158 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break;
1159 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break;
1160 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break;
1161 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break;
1162 case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break;
1163 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break;
1164 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break;
1165 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break;
1166 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break;
1167 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break;
1168 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break;
1169 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break;
1170 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break;
1171 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break;
1172 case V4L2_PIX_FMT_HM12: descr = "YUV 4:2:0 (16x16 Macroblocks)"; break;
1173 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break;
1174 case V4L2_PIX_FMT_NV12: descr = "Y/CbCr 4:2:0"; break;
1175 case V4L2_PIX_FMT_NV21: descr = "Y/CrCb 4:2:0"; break;
1176 case V4L2_PIX_FMT_NV16: descr = "Y/CbCr 4:2:2"; break;
1177 case V4L2_PIX_FMT_NV61: descr = "Y/CrCb 4:2:2"; break;
1178 case V4L2_PIX_FMT_NV24: descr = "Y/CbCr 4:4:4"; break;
1179 case V4L2_PIX_FMT_NV42: descr = "Y/CrCb 4:4:4"; break;
1180 case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break;
1181 case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break;
1182 case V4L2_PIX_FMT_NV16M: descr = "Y/CbCr 4:2:2 (N-C)"; break;
1183 case V4L2_PIX_FMT_NV61M: descr = "Y/CrCb 4:2:2 (N-C)"; break;
1184 case V4L2_PIX_FMT_NV12MT: descr = "Y/CbCr 4:2:0 (64x32 MB, N-C)"; break;
1185 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/CbCr 4:2:0 (16x16 MB, N-C)"; break;
1186 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break;
1187 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break;
1188 case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break;
1189 case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break;
1190 case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break;
1191 case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break;
1192 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break;
1193 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break;
1194 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break;
1195 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break;
1196 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break;
1197 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break;
1198 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break;
1199 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break;
1200 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break;
1201 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break;
1202 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break;
1203 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break;
1204 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break;
1205 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break;
1206 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break;
1207 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break;
1208 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break;
1209 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break;
1210 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break;
1211 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break;
1212 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break;
1213 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break;
1214 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break;
1215 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break;
1216 case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break;
1217 case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break;
1218 case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break;
1219 case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break;
1220 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break;
1221 case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break;
1222 case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break;
1223 case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break;
1224 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break;
1225 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break;
1226 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break;
1227 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break;
1228 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break;
1229 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break;
1230 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break;
1231 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break;
1232 case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break;
1233 case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break;
1234 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break;
1235 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break;
1236 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break;
1237 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break;
1238 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break;
1239 case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break;
1240 case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break;
1241 case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break;
1242 case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit signed deltas"; break;
1243 case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit signed deltas"; break;
1244 case V4L2_TCH_FMT_TU16: descr = "16-bit unsigned touch data"; break;
1245 case V4L2_TCH_FMT_TU08: descr = "8-bit unsigned touch data"; break;
1246 case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break;
1247 case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break;
1250 /* Compressed formats */
1251 flags = V4L2_FMT_FLAG_COMPRESSED;
1252 switch (fmt->pixelformat) {
1253 /* Max description length mask: descr = "0123456789012345678901234567890" */
1254 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break;
1255 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break;
1256 case V4L2_PIX_FMT_DV: descr = "1394"; break;
1257 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break;
1258 case V4L2_PIX_FMT_H264: descr = "H.264"; break;
1259 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break;
1260 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break;
1261 case V4L2_PIX_FMT_H263: descr = "H.263"; break;
1262 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break;
1263 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break;
1264 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 part 2 ES"; break;
1265 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break;
1266 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break;
1267 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break;
1268 case V4L2_PIX_FMT_VP8: descr = "VP8"; break;
1269 case V4L2_PIX_FMT_VP9: descr = "VP9"; break;
1270 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break;
1271 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break;
1272 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break;
1273 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break;
1274 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break;
1275 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break;
1276 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break;
1277 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break;
1278 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break;
1279 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break;
1280 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break;
1281 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break;
1282 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break;
1283 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break;
1284 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break;
1285 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break;
1286 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break;
1287 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break;
1288 case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break;
1290 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat);
1291 if (fmt->description[0])
1294 snprintf(fmt->description, sz, "%c%c%c%c%s",
1295 (char)(fmt->pixelformat & 0x7f),
1296 (char)((fmt->pixelformat >> 8) & 0x7f),
1297 (char)((fmt->pixelformat >> 16) & 0x7f),
1298 (char)((fmt->pixelformat >> 24) & 0x7f),
1299 (fmt->pixelformat & (1 << 31)) ? "-BE" : "");
1305 WARN_ON(strlcpy(fmt->description, descr, sz) >= sz);
1309 static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
1310 struct file *file, void *fh, void *arg)
1312 struct v4l2_fmtdesc *p = arg;
1313 int ret = check_fmt(file, p->type);
1320 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1321 if (unlikely(!ops->vidioc_enum_fmt_vid_cap))
1323 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
1325 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1326 if (unlikely(!ops->vidioc_enum_fmt_vid_cap_mplane))
1328 ret = ops->vidioc_enum_fmt_vid_cap_mplane(file, fh, arg);
1330 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1331 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay))
1333 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
1335 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1336 if (unlikely(!ops->vidioc_enum_fmt_vid_out))
1338 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg);
1340 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1341 if (unlikely(!ops->vidioc_enum_fmt_vid_out_mplane))
1343 ret = ops->vidioc_enum_fmt_vid_out_mplane(file, fh, arg);
1345 case V4L2_BUF_TYPE_SDR_CAPTURE:
1346 if (unlikely(!ops->vidioc_enum_fmt_sdr_cap))
1348 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg);
1350 case V4L2_BUF_TYPE_SDR_OUTPUT:
1351 if (unlikely(!ops->vidioc_enum_fmt_sdr_out))
1353 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg);
1355 case V4L2_BUF_TYPE_META_CAPTURE:
1356 if (unlikely(!ops->vidioc_enum_fmt_meta_cap))
1358 ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg);
1362 v4l_fill_fmtdesc(p);
1366 static void v4l_pix_format_touch(struct v4l2_pix_format *p)
1369 * The v4l2_pix_format structure contains fields that make no sense for
1370 * touch. Set them to default values in this case.
1373 p->field = V4L2_FIELD_NONE;
1374 p->colorspace = V4L2_COLORSPACE_RAW;
1377 p->quantization = 0;
1381 static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
1382 struct file *file, void *fh, void *arg)
1384 struct v4l2_format *p = arg;
1385 struct video_device *vfd = video_devdata(file);
1386 int ret = check_fmt(file, p->type);
1392 * fmt can't be cleared for these overlay types due to the 'clips'
1393 * 'clipcount' and 'bitmap' pointers in struct v4l2_window.
1394 * Those are provided by the user. So handle these two overlay types
1395 * first, and then just do a simple memset for the other types.
1398 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1399 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: {
1400 struct v4l2_clip __user *clips = p->fmt.win.clips;
1401 u32 clipcount = p->fmt.win.clipcount;
1402 void __user *bitmap = p->fmt.win.bitmap;
1404 memset(&p->fmt, 0, sizeof(p->fmt));
1405 p->fmt.win.clips = clips;
1406 p->fmt.win.clipcount = clipcount;
1407 p->fmt.win.bitmap = bitmap;
1411 memset(&p->fmt, 0, sizeof(p->fmt));
1416 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1417 if (unlikely(!ops->vidioc_g_fmt_vid_cap))
1419 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1420 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg);
1421 /* just in case the driver zeroed it again */
1422 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1423 if (vfd->vfl_type == VFL_TYPE_TOUCH)
1424 v4l_pix_format_touch(&p->fmt.pix);
1426 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1427 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
1428 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1429 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
1430 case V4L2_BUF_TYPE_VBI_CAPTURE:
1431 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
1432 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1433 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
1434 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1435 if (unlikely(!ops->vidioc_g_fmt_vid_out))
1437 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1438 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg);
1439 /* just in case the driver zeroed it again */
1440 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1442 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1443 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
1444 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1445 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
1446 case V4L2_BUF_TYPE_VBI_OUTPUT:
1447 return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
1448 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1449 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
1450 case V4L2_BUF_TYPE_SDR_CAPTURE:
1451 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg);
1452 case V4L2_BUF_TYPE_SDR_OUTPUT:
1453 return ops->vidioc_g_fmt_sdr_out(file, fh, arg);
1454 case V4L2_BUF_TYPE_META_CAPTURE:
1455 return ops->vidioc_g_fmt_meta_cap(file, fh, arg);
1460 static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
1461 struct file *file, void *fh, void *arg)
1463 struct v4l2_format *p = arg;
1464 struct video_device *vfd = video_devdata(file);
1465 int ret = check_fmt(file, p->type);
1470 ret = v4l_enable_media_source(vfd);
1473 v4l_sanitize_format(p);
1476 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1477 if (unlikely(!ops->vidioc_s_fmt_vid_cap))
1479 CLEAR_AFTER_FIELD(p, fmt.pix);
1480 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg);
1481 /* just in case the driver zeroed it again */
1482 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1483 if (vfd->vfl_type == VFL_TYPE_TOUCH)
1484 v4l_pix_format_touch(&p->fmt.pix);
1486 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1487 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane))
1489 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
1490 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
1491 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1492 if (unlikely(!ops->vidioc_s_fmt_vid_overlay))
1494 CLEAR_AFTER_FIELD(p, fmt.win);
1495 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
1496 case V4L2_BUF_TYPE_VBI_CAPTURE:
1497 if (unlikely(!ops->vidioc_s_fmt_vbi_cap))
1499 CLEAR_AFTER_FIELD(p, fmt.vbi.flags);
1500 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
1501 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1502 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap))
1504 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size);
1505 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
1506 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1507 if (unlikely(!ops->vidioc_s_fmt_vid_out))
1509 CLEAR_AFTER_FIELD(p, fmt.pix);
1510 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg);
1511 /* just in case the driver zeroed it again */
1512 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1514 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1515 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane))
1517 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
1518 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
1519 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1520 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay))
1522 CLEAR_AFTER_FIELD(p, fmt.win);
1523 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
1524 case V4L2_BUF_TYPE_VBI_OUTPUT:
1525 if (unlikely(!ops->vidioc_s_fmt_vbi_out))
1527 CLEAR_AFTER_FIELD(p, fmt.vbi.flags);
1528 return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
1529 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1530 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out))
1532 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size);
1533 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
1534 case V4L2_BUF_TYPE_SDR_CAPTURE:
1535 if (unlikely(!ops->vidioc_s_fmt_sdr_cap))
1537 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize);
1538 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg);
1539 case V4L2_BUF_TYPE_SDR_OUTPUT:
1540 if (unlikely(!ops->vidioc_s_fmt_sdr_out))
1542 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize);
1543 return ops->vidioc_s_fmt_sdr_out(file, fh, arg);
1544 case V4L2_BUF_TYPE_META_CAPTURE:
1545 if (unlikely(!ops->vidioc_s_fmt_meta_cap))
1547 CLEAR_AFTER_FIELD(p, fmt.meta);
1548 return ops->vidioc_s_fmt_meta_cap(file, fh, arg);
1553 static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
1554 struct file *file, void *fh, void *arg)
1556 struct v4l2_format *p = arg;
1557 int ret = check_fmt(file, p->type);
1562 v4l_sanitize_format(p);
1565 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1566 if (unlikely(!ops->vidioc_try_fmt_vid_cap))
1568 CLEAR_AFTER_FIELD(p, fmt.pix);
1569 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg);
1570 /* just in case the driver zeroed it again */
1571 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1573 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1574 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane))
1576 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
1577 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
1578 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1579 if (unlikely(!ops->vidioc_try_fmt_vid_overlay))
1581 CLEAR_AFTER_FIELD(p, fmt.win);
1582 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
1583 case V4L2_BUF_TYPE_VBI_CAPTURE:
1584 if (unlikely(!ops->vidioc_try_fmt_vbi_cap))
1586 CLEAR_AFTER_FIELD(p, fmt.vbi.flags);
1587 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
1588 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1589 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap))
1591 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size);
1592 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
1593 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1594 if (unlikely(!ops->vidioc_try_fmt_vid_out))
1596 CLEAR_AFTER_FIELD(p, fmt.pix);
1597 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg);
1598 /* just in case the driver zeroed it again */
1599 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1601 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1602 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane))
1604 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
1605 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
1606 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1607 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay))
1609 CLEAR_AFTER_FIELD(p, fmt.win);
1610 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
1611 case V4L2_BUF_TYPE_VBI_OUTPUT:
1612 if (unlikely(!ops->vidioc_try_fmt_vbi_out))
1614 CLEAR_AFTER_FIELD(p, fmt.vbi.flags);
1615 return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
1616 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1617 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out))
1619 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size);
1620 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
1621 case V4L2_BUF_TYPE_SDR_CAPTURE:
1622 if (unlikely(!ops->vidioc_try_fmt_sdr_cap))
1624 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize);
1625 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg);
1626 case V4L2_BUF_TYPE_SDR_OUTPUT:
1627 if (unlikely(!ops->vidioc_try_fmt_sdr_out))
1629 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize);
1630 return ops->vidioc_try_fmt_sdr_out(file, fh, arg);
1631 case V4L2_BUF_TYPE_META_CAPTURE:
1632 if (unlikely(!ops->vidioc_try_fmt_meta_cap))
1634 CLEAR_AFTER_FIELD(p, fmt.meta);
1635 return ops->vidioc_try_fmt_meta_cap(file, fh, arg);
1640 static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
1641 struct file *file, void *fh, void *arg)
1643 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
1646 static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
1647 struct file *file, void *fh, void *arg)
1649 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
1652 static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,
1653 struct file *file, void *fh, void *arg)
1655 struct video_device *vfd = video_devdata(file);
1656 struct v4l2_tuner *p = arg;
1659 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1660 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1661 err = ops->vidioc_g_tuner(file, fh, p);
1663 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1667 static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
1668 struct file *file, void *fh, void *arg)
1670 struct video_device *vfd = video_devdata(file);
1671 struct v4l2_tuner *p = arg;
1674 ret = v4l_enable_media_source(vfd);
1677 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1678 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1679 return ops->vidioc_s_tuner(file, fh, p);
1682 static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,
1683 struct file *file, void *fh, void *arg)
1685 struct video_device *vfd = video_devdata(file);
1686 struct v4l2_modulator *p = arg;
1689 if (vfd->vfl_type == VFL_TYPE_RADIO)
1690 p->type = V4L2_TUNER_RADIO;
1692 err = ops->vidioc_g_modulator(file, fh, p);
1694 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1698 static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops,
1699 struct file *file, void *fh, void *arg)
1701 struct video_device *vfd = video_devdata(file);
1702 struct v4l2_modulator *p = arg;
1704 if (vfd->vfl_type == VFL_TYPE_RADIO)
1705 p->type = V4L2_TUNER_RADIO;
1707 return ops->vidioc_s_modulator(file, fh, p);
1710 static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
1711 struct file *file, void *fh, void *arg)
1713 struct video_device *vfd = video_devdata(file);
1714 struct v4l2_frequency *p = arg;
1716 if (vfd->vfl_type == VFL_TYPE_SDR)
1717 p->type = V4L2_TUNER_SDR;
1719 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1720 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1721 return ops->vidioc_g_frequency(file, fh, p);
1724 static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
1725 struct file *file, void *fh, void *arg)
1727 struct video_device *vfd = video_devdata(file);
1728 const struct v4l2_frequency *p = arg;
1729 enum v4l2_tuner_type type;
1732 ret = v4l_enable_media_source(vfd);
1735 if (vfd->vfl_type == VFL_TYPE_SDR) {
1736 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)
1739 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1740 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1741 if (type != p->type)
1744 return ops->vidioc_s_frequency(file, fh, p);
1747 static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
1748 struct file *file, void *fh, void *arg)
1750 struct video_device *vfd = video_devdata(file);
1751 struct v4l2_standard *p = arg;
1752 v4l2_std_id id = vfd->tvnorms, curr_id = 0;
1753 unsigned int index = p->index, i, j = 0;
1754 const char *descr = "";
1756 /* Return -ENODATA if the tvnorms for the current input
1757 or output is 0, meaning that it doesn't support this API. */
1761 /* Return norm array in a canonical way */
1762 for (i = 0; i <= index && id; i++) {
1763 /* last std value in the standards array is 0, so this
1764 while always ends there since (id & 0) == 0. */
1765 while ((id & standards[j].std) != standards[j].std)
1767 curr_id = standards[j].std;
1768 descr = standards[j].descr;
1772 if (curr_id != V4L2_STD_PAL &&
1773 curr_id != V4L2_STD_SECAM &&
1774 curr_id != V4L2_STD_NTSC)
1780 v4l2_video_std_construct(p, curr_id, descr);
1784 static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
1785 struct file *file, void *fh, void *arg)
1787 struct video_device *vfd = video_devdata(file);
1788 v4l2_std_id id = *(v4l2_std_id *)arg, norm;
1791 ret = v4l_enable_media_source(vfd);
1794 norm = id & vfd->tvnorms;
1795 if (vfd->tvnorms && !norm) /* Check if std is supported */
1798 /* Calls the specific handler */
1799 return ops->vidioc_s_std(file, fh, norm);
1802 static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
1803 struct file *file, void *fh, void *arg)
1805 struct video_device *vfd = video_devdata(file);
1806 v4l2_std_id *p = arg;
1809 ret = v4l_enable_media_source(vfd);
1813 * If no signal is detected, then the driver should return
1814 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with
1815 * any standards that do not apply removed.
1817 * This means that tuners, audio and video decoders can join
1818 * their efforts to improve the standards detection.
1821 return ops->vidioc_querystd(file, fh, arg);
1824 static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
1825 struct file *file, void *fh, void *arg)
1827 struct video_device *vfd = video_devdata(file);
1828 struct v4l2_hw_freq_seek *p = arg;
1829 enum v4l2_tuner_type type;
1832 ret = v4l_enable_media_source(vfd);
1835 /* s_hw_freq_seek is not supported for SDR for now */
1836 if (vfd->vfl_type == VFL_TYPE_SDR)
1839 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1840 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1841 if (p->type != type)
1843 return ops->vidioc_s_hw_freq_seek(file, fh, p);
1846 static int v4l_overlay(const struct v4l2_ioctl_ops *ops,
1847 struct file *file, void *fh, void *arg)
1849 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg);
1852 static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,
1853 struct file *file, void *fh, void *arg)
1855 struct v4l2_requestbuffers *p = arg;
1856 int ret = check_fmt(file, p->type);
1861 CLEAR_AFTER_FIELD(p, memory);
1863 return ops->vidioc_reqbufs(file, fh, p);
1866 static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,
1867 struct file *file, void *fh, void *arg)
1869 struct v4l2_buffer *p = arg;
1870 int ret = check_fmt(file, p->type);
1872 return ret ? ret : ops->vidioc_querybuf(file, fh, p);
1875 static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,
1876 struct file *file, void *fh, void *arg)
1878 struct v4l2_buffer *p = arg;
1879 int ret = check_fmt(file, p->type);
1881 return ret ? ret : ops->vidioc_qbuf(file, fh, p);
1884 static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,
1885 struct file *file, void *fh, void *arg)
1887 struct v4l2_buffer *p = arg;
1888 int ret = check_fmt(file, p->type);
1890 return ret ? ret : ops->vidioc_dqbuf(file, fh, p);
1893 static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
1894 struct file *file, void *fh, void *arg)
1896 struct v4l2_create_buffers *create = arg;
1897 int ret = check_fmt(file, create->format.type);
1902 CLEAR_AFTER_FIELD(create, format);
1904 v4l_sanitize_format(&create->format);
1906 ret = ops->vidioc_create_bufs(file, fh, create);
1908 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1909 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1910 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1915 static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
1916 struct file *file, void *fh, void *arg)
1918 struct v4l2_buffer *b = arg;
1919 int ret = check_fmt(file, b->type);
1921 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
1924 static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
1925 struct file *file, void *fh, void *arg)
1927 struct v4l2_streamparm *p = arg;
1929 int ret = check_fmt(file, p->type);
1933 if (ops->vidioc_g_parm)
1934 return ops->vidioc_g_parm(file, fh, p);
1935 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1936 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1938 p->parm.capture.readbuffers = 2;
1939 ret = ops->vidioc_g_std(file, fh, &std);
1941 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe);
1945 static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
1946 struct file *file, void *fh, void *arg)
1948 struct v4l2_streamparm *p = arg;
1949 int ret = check_fmt(file, p->type);
1954 /* Note: extendedmode is never used in drivers */
1955 if (V4L2_TYPE_IS_OUTPUT(p->type)) {
1956 memset(p->parm.output.reserved, 0,
1957 sizeof(p->parm.output.reserved));
1958 p->parm.output.extendedmode = 0;
1959 p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY;
1961 memset(p->parm.capture.reserved, 0,
1962 sizeof(p->parm.capture.reserved));
1963 p->parm.capture.extendedmode = 0;
1964 p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY;
1966 return ops->vidioc_s_parm(file, fh, p);
1969 static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,
1970 struct file *file, void *fh, void *arg)
1972 struct video_device *vfd = video_devdata(file);
1973 struct v4l2_queryctrl *p = arg;
1974 struct v4l2_fh *vfh =
1975 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1977 if (vfh && vfh->ctrl_handler)
1978 return v4l2_queryctrl(vfh->ctrl_handler, p);
1979 if (vfd->ctrl_handler)
1980 return v4l2_queryctrl(vfd->ctrl_handler, p);
1981 if (ops->vidioc_queryctrl)
1982 return ops->vidioc_queryctrl(file, fh, p);
1986 static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops,
1987 struct file *file, void *fh, void *arg)
1989 struct video_device *vfd = video_devdata(file);
1990 struct v4l2_query_ext_ctrl *p = arg;
1991 struct v4l2_fh *vfh =
1992 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1994 if (vfh && vfh->ctrl_handler)
1995 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p);
1996 if (vfd->ctrl_handler)
1997 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p);
1998 if (ops->vidioc_query_ext_ctrl)
1999 return ops->vidioc_query_ext_ctrl(file, fh, p);
2003 static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,
2004 struct file *file, void *fh, void *arg)
2006 struct video_device *vfd = video_devdata(file);
2007 struct v4l2_querymenu *p = arg;
2008 struct v4l2_fh *vfh =
2009 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2011 if (vfh && vfh->ctrl_handler)
2012 return v4l2_querymenu(vfh->ctrl_handler, p);
2013 if (vfd->ctrl_handler)
2014 return v4l2_querymenu(vfd->ctrl_handler, p);
2015 if (ops->vidioc_querymenu)
2016 return ops->vidioc_querymenu(file, fh, p);
2020 static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops,
2021 struct file *file, void *fh, void *arg)
2023 struct video_device *vfd = video_devdata(file);
2024 struct v4l2_control *p = arg;
2025 struct v4l2_fh *vfh =
2026 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2027 struct v4l2_ext_controls ctrls;
2028 struct v4l2_ext_control ctrl;
2030 if (vfh && vfh->ctrl_handler)
2031 return v4l2_g_ctrl(vfh->ctrl_handler, p);
2032 if (vfd->ctrl_handler)
2033 return v4l2_g_ctrl(vfd->ctrl_handler, p);
2034 if (ops->vidioc_g_ctrl)
2035 return ops->vidioc_g_ctrl(file, fh, p);
2036 if (ops->vidioc_g_ext_ctrls == NULL)
2039 ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
2041 ctrls.controls = &ctrl;
2043 ctrl.value = p->value;
2044 if (check_ext_ctrls(&ctrls, 1)) {
2045 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
2048 p->value = ctrl.value;
2054 static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,
2055 struct file *file, void *fh, void *arg)
2057 struct video_device *vfd = video_devdata(file);
2058 struct v4l2_control *p = arg;
2059 struct v4l2_fh *vfh =
2060 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2061 struct v4l2_ext_controls ctrls;
2062 struct v4l2_ext_control ctrl;
2064 if (vfh && vfh->ctrl_handler)
2065 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
2066 if (vfd->ctrl_handler)
2067 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
2068 if (ops->vidioc_s_ctrl)
2069 return ops->vidioc_s_ctrl(file, fh, p);
2070 if (ops->vidioc_s_ext_ctrls == NULL)
2073 ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
2075 ctrls.controls = &ctrl;
2077 ctrl.value = p->value;
2078 if (check_ext_ctrls(&ctrls, 1))
2079 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
2083 static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2084 struct file *file, void *fh, void *arg)
2086 struct video_device *vfd = video_devdata(file);
2087 struct v4l2_ext_controls *p = arg;
2088 struct v4l2_fh *vfh =
2089 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2091 p->error_idx = p->count;
2092 if (vfh && vfh->ctrl_handler)
2093 return v4l2_g_ext_ctrls(vfh->ctrl_handler, p);
2094 if (vfd->ctrl_handler)
2095 return v4l2_g_ext_ctrls(vfd->ctrl_handler, p);
2096 if (ops->vidioc_g_ext_ctrls == NULL)
2098 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :
2102 static int v4l_s_ext_ctrls(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_ext_controls *p = arg;
2107 struct v4l2_fh *vfh =
2108 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2110 p->error_idx = p->count;
2111 if (vfh && vfh->ctrl_handler)
2112 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, p);
2113 if (vfd->ctrl_handler)
2114 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, p);
2115 if (ops->vidioc_s_ext_ctrls == NULL)
2117 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :
2121 static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2122 struct file *file, void *fh, void *arg)
2124 struct video_device *vfd = video_devdata(file);
2125 struct v4l2_ext_controls *p = arg;
2126 struct v4l2_fh *vfh =
2127 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2129 p->error_idx = p->count;
2130 if (vfh && vfh->ctrl_handler)
2131 return v4l2_try_ext_ctrls(vfh->ctrl_handler, p);
2132 if (vfd->ctrl_handler)
2133 return v4l2_try_ext_ctrls(vfd->ctrl_handler, p);
2134 if (ops->vidioc_try_ext_ctrls == NULL)
2136 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :
2141 * The selection API specified originally that the _MPLANE buffer types
2142 * shouldn't be used. The reasons for this are lost in the mists of time
2143 * (or just really crappy memories). Regardless, this is really annoying
2144 * for userspace. So to keep things simple we map _MPLANE buffer types
2145 * to their 'regular' counterparts before calling the driver. And we
2146 * restore it afterwards. This way applications can use either buffer
2147 * type and drivers don't need to check for both.
2149 static int v4l_g_selection(const struct v4l2_ioctl_ops *ops,
2150 struct file *file, void *fh, void *arg)
2152 struct v4l2_selection *p = arg;
2153 u32 old_type = p->type;
2156 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2157 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2158 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2159 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2160 ret = ops->vidioc_g_selection(file, fh, p);
2165 static int v4l_s_selection(const struct v4l2_ioctl_ops *ops,
2166 struct file *file, void *fh, void *arg)
2168 struct v4l2_selection *p = arg;
2169 u32 old_type = p->type;
2172 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2173 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2174 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2175 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2176 ret = ops->vidioc_s_selection(file, fh, p);
2181 static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
2182 struct file *file, void *fh, void *arg)
2184 struct v4l2_crop *p = arg;
2185 struct v4l2_selection s = {
2190 if (ops->vidioc_g_crop)
2191 return ops->vidioc_g_crop(file, fh, p);
2192 /* simulate capture crop using selection api */
2194 /* crop means compose for output devices */
2195 if (V4L2_TYPE_IS_OUTPUT(p->type))
2196 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
2198 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
2200 ret = v4l_g_selection(ops, file, fh, &s);
2202 /* copying results to old structure on success */
2208 static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
2209 struct file *file, void *fh, void *arg)
2211 struct v4l2_crop *p = arg;
2212 struct v4l2_selection s = {
2217 if (ops->vidioc_s_crop)
2218 return ops->vidioc_s_crop(file, fh, p);
2219 /* simulate capture crop using selection api */
2221 /* crop means compose for output devices */
2222 if (V4L2_TYPE_IS_OUTPUT(p->type))
2223 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
2225 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
2227 return v4l_s_selection(ops, file, fh, &s);
2230 static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
2231 struct file *file, void *fh, void *arg)
2233 struct v4l2_cropcap *p = arg;
2234 struct v4l2_selection s = { .type = p->type };
2237 /* setting trivial pixelaspect */
2238 p->pixelaspect.numerator = 1;
2239 p->pixelaspect.denominator = 1;
2242 * The determine_valid_ioctls() call already should ensure
2243 * that this can never happen, but just in case...
2245 if (WARN_ON(!ops->vidioc_cropcap && !ops->vidioc_g_selection))
2248 if (ops->vidioc_cropcap)
2249 ret = ops->vidioc_cropcap(file, fh, p);
2251 if (!ops->vidioc_g_selection)
2255 * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the
2256 * square pixel aspect ratio in that case.
2258 if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD)
2261 /* Use g_selection() to fill in the bounds and defrect rectangles */
2263 /* obtaining bounds */
2264 if (V4L2_TYPE_IS_OUTPUT(p->type))
2265 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
2267 s.target = V4L2_SEL_TGT_CROP_BOUNDS;
2269 ret = v4l_g_selection(ops, file, fh, &s);
2274 /* obtaining defrect */
2275 if (V4L2_TYPE_IS_OUTPUT(p->type))
2276 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
2278 s.target = V4L2_SEL_TGT_CROP_DEFAULT;
2280 ret = v4l_g_selection(ops, file, fh, &s);
2288 static int v4l_log_status(const struct v4l2_ioctl_ops *ops,
2289 struct file *file, void *fh, void *arg)
2291 struct video_device *vfd = video_devdata(file);
2295 pr_info("%s: ================= START STATUS =================\n",
2296 vfd->v4l2_dev->name);
2297 ret = ops->vidioc_log_status(file, fh);
2299 pr_info("%s: ================== END STATUS ==================\n",
2300 vfd->v4l2_dev->name);
2304 static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
2305 struct file *file, void *fh, void *arg)
2307 #ifdef CONFIG_VIDEO_ADV_DEBUG
2308 struct v4l2_dbg_register *p = arg;
2309 struct video_device *vfd = video_devdata(file);
2310 struct v4l2_subdev *sd;
2313 if (!capable(CAP_SYS_ADMIN))
2315 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2316 if (vfd->v4l2_dev == NULL)
2318 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2319 if (p->match.addr == idx++)
2320 return v4l2_subdev_call(sd, core, g_register, p);
2323 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2324 (ops->vidioc_g_chip_info || p->match.addr == 0))
2325 return ops->vidioc_g_register(file, fh, p);
2332 static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
2333 struct file *file, void *fh, void *arg)
2335 #ifdef CONFIG_VIDEO_ADV_DEBUG
2336 const struct v4l2_dbg_register *p = arg;
2337 struct video_device *vfd = video_devdata(file);
2338 struct v4l2_subdev *sd;
2341 if (!capable(CAP_SYS_ADMIN))
2343 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2344 if (vfd->v4l2_dev == NULL)
2346 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2347 if (p->match.addr == idx++)
2348 return v4l2_subdev_call(sd, core, s_register, p);
2351 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2352 (ops->vidioc_g_chip_info || p->match.addr == 0))
2353 return ops->vidioc_s_register(file, fh, p);
2360 static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,
2361 struct file *file, void *fh, void *arg)
2363 #ifdef CONFIG_VIDEO_ADV_DEBUG
2364 struct video_device *vfd = video_devdata(file);
2365 struct v4l2_dbg_chip_info *p = arg;
2366 struct v4l2_subdev *sd;
2369 switch (p->match.type) {
2370 case V4L2_CHIP_MATCH_BRIDGE:
2371 if (ops->vidioc_s_register)
2372 p->flags |= V4L2_CHIP_FL_WRITABLE;
2373 if (ops->vidioc_g_register)
2374 p->flags |= V4L2_CHIP_FL_READABLE;
2375 strlcpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));
2376 if (ops->vidioc_g_chip_info)
2377 return ops->vidioc_g_chip_info(file, fh, arg);
2382 case V4L2_CHIP_MATCH_SUBDEV:
2383 if (vfd->v4l2_dev == NULL)
2385 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {
2386 if (p->match.addr != idx++)
2388 if (sd->ops->core && sd->ops->core->s_register)
2389 p->flags |= V4L2_CHIP_FL_WRITABLE;
2390 if (sd->ops->core && sd->ops->core->g_register)
2391 p->flags |= V4L2_CHIP_FL_READABLE;
2392 strlcpy(p->name, sd->name, sizeof(p->name));
2403 static int v4l_dqevent(const struct v4l2_ioctl_ops *ops,
2404 struct file *file, void *fh, void *arg)
2406 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK);
2409 static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,
2410 struct file *file, void *fh, void *arg)
2412 return ops->vidioc_subscribe_event(fh, arg);
2415 static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,
2416 struct file *file, void *fh, void *arg)
2418 return ops->vidioc_unsubscribe_event(fh, arg);
2421 static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,
2422 struct file *file, void *fh, void *arg)
2424 struct v4l2_sliced_vbi_cap *p = arg;
2425 int ret = check_fmt(file, p->type);
2430 /* Clear up to type, everything after type is zeroed already */
2431 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
2433 return ops->vidioc_g_sliced_vbi_cap(file, fh, p);
2436 static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
2437 struct file *file, void *fh, void *arg)
2439 struct video_device *vfd = video_devdata(file);
2440 struct v4l2_frequency_band *p = arg;
2441 enum v4l2_tuner_type type;
2444 if (vfd->vfl_type == VFL_TYPE_SDR) {
2445 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)
2449 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2450 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2451 if (type != p->type)
2454 if (ops->vidioc_enum_freq_bands) {
2455 err = ops->vidioc_enum_freq_bands(file, fh, p);
2459 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) {
2460 struct v4l2_tuner t = {
2467 err = ops->vidioc_g_tuner(file, fh, &t);
2470 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2471 p->rangelow = t.rangelow;
2472 p->rangehigh = t.rangehigh;
2473 p->modulation = (type == V4L2_TUNER_RADIO) ?
2474 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2477 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) {
2478 struct v4l2_modulator m = {
2482 if (type != V4L2_TUNER_RADIO)
2486 err = ops->vidioc_g_modulator(file, fh, &m);
2489 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2490 p->rangelow = m.rangelow;
2491 p->rangehigh = m.rangehigh;
2492 p->modulation = (type == V4L2_TUNER_RADIO) ?
2493 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2499 struct v4l2_ioctl_info {
2502 const char * const name;
2505 int (*func)(const struct v4l2_ioctl_ops *ops,
2506 struct file *file, void *fh, void *p);
2508 void (*debug)(const void *arg, bool write_only);
2511 /* This control needs a priority check */
2512 #define INFO_FL_PRIO (1 << 0)
2513 /* This control can be valid if the filehandle passes a control handler. */
2514 #define INFO_FL_CTRL (1 << 1)
2515 /* This is a standard ioctl, no need for special code */
2516 #define INFO_FL_STD (1 << 2)
2517 /* This is ioctl has its own function */
2518 #define INFO_FL_FUNC (1 << 3)
2520 #define INFO_FL_QUEUE (1 << 4)
2521 /* Always copy back result, even on error */
2522 #define INFO_FL_ALWAYS_COPY (1 << 5)
2523 /* Zero struct from after the field to the end */
2524 #define INFO_FL_CLEAR(v4l2_struct, field) \
2525 ((offsetof(struct v4l2_struct, field) + \
2526 sizeof(((struct v4l2_struct *)0)->field)) << 16)
2527 #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
2529 #define IOCTL_INFO_STD(_ioctl, _vidioc, _debug, _flags) \
2530 [_IOC_NR(_ioctl)] = { \
2532 .flags = _flags | INFO_FL_STD, \
2534 .u.offset = offsetof(struct v4l2_ioctl_ops, _vidioc), \
2538 #define IOCTL_INFO_FNC(_ioctl, _func, _debug, _flags) \
2539 [_IOC_NR(_ioctl)] = { \
2541 .flags = _flags | INFO_FL_FUNC, \
2547 static struct v4l2_ioctl_info v4l2_ioctls[] = {
2548 IOCTL_INFO_FNC(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
2549 IOCTL_INFO_FNC(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)),
2550 IOCTL_INFO_FNC(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0),
2551 IOCTL_INFO_FNC(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
2552 IOCTL_INFO_FNC(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2553 IOCTL_INFO_FNC(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
2554 IOCTL_INFO_STD(VIDIOC_G_FBUF, vidioc_g_fbuf, v4l_print_framebuffer, 0),
2555 IOCTL_INFO_STD(VIDIOC_S_FBUF, vidioc_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
2556 IOCTL_INFO_FNC(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO),
2557 IOCTL_INFO_FNC(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),
2558 IOCTL_INFO_STD(VIDIOC_EXPBUF, vidioc_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)),
2559 IOCTL_INFO_FNC(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),
2560 IOCTL_INFO_FNC(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2561 IOCTL_INFO_FNC(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2562 IOCTL_INFO_FNC(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
2563 IOCTL_INFO_FNC(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
2564 IOCTL_INFO_STD(VIDIOC_G_STD, vidioc_g_std, v4l_print_std, 0),
2565 IOCTL_INFO_FNC(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
2566 IOCTL_INFO_FNC(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
2567 IOCTL_INFO_FNC(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
2568 IOCTL_INFO_FNC(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
2569 IOCTL_INFO_FNC(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
2570 IOCTL_INFO_FNC(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
2571 IOCTL_INFO_FNC(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
2572 IOCTL_INFO_STD(VIDIOC_G_AUDIO, vidioc_g_audio, v4l_print_audio, 0),
2573 IOCTL_INFO_STD(VIDIOC_S_AUDIO, vidioc_s_audio, v4l_print_audio, INFO_FL_PRIO),
2574 IOCTL_INFO_FNC(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
2575 IOCTL_INFO_FNC(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
2576 IOCTL_INFO_STD(VIDIOC_G_INPUT, vidioc_g_input, v4l_print_u32, 0),
2577 IOCTL_INFO_FNC(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
2578 IOCTL_INFO_STD(VIDIOC_G_EDID, vidioc_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY),
2579 IOCTL_INFO_STD(VIDIOC_S_EDID, vidioc_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY),
2580 IOCTL_INFO_STD(VIDIOC_G_OUTPUT, vidioc_g_output, v4l_print_u32, 0),
2581 IOCTL_INFO_FNC(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
2582 IOCTL_INFO_FNC(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
2583 IOCTL_INFO_STD(VIDIOC_G_AUDOUT, vidioc_g_audout, v4l_print_audioout, 0),
2584 IOCTL_INFO_STD(VIDIOC_S_AUDOUT, vidioc_s_audout, v4l_print_audioout, INFO_FL_PRIO),
2585 IOCTL_INFO_FNC(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
2586 IOCTL_INFO_FNC(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
2587 IOCTL_INFO_FNC(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
2588 IOCTL_INFO_FNC(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
2589 IOCTL_INFO_FNC(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
2590 IOCTL_INFO_FNC(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
2591 IOCTL_INFO_FNC(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
2592 IOCTL_INFO_FNC(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)),
2593 IOCTL_INFO_FNC(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)),
2594 IOCTL_INFO_STD(VIDIOC_G_JPEGCOMP, vidioc_g_jpegcomp, v4l_print_jpegcompression, 0),
2595 IOCTL_INFO_STD(VIDIOC_S_JPEGCOMP, vidioc_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
2596 IOCTL_INFO_FNC(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
2597 IOCTL_INFO_FNC(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
2598 IOCTL_INFO_STD(VIDIOC_ENUMAUDIO, vidioc_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
2599 IOCTL_INFO_STD(VIDIOC_ENUMAUDOUT, vidioc_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
2600 IOCTL_INFO_FNC(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
2601 IOCTL_INFO_FNC(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
2602 IOCTL_INFO_FNC(VIDIOC_G_SLICED_VBI_CAP, v4l_g_sliced_vbi_cap, v4l_print_sliced_vbi_cap, INFO_FL_CLEAR(v4l2_sliced_vbi_cap, type)),
2603 IOCTL_INFO_FNC(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
2604 IOCTL_INFO_FNC(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2605 IOCTL_INFO_FNC(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL),
2606 IOCTL_INFO_FNC(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2607 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMESIZES, vidioc_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
2608 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMEINTERVALS, vidioc_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
2609 IOCTL_INFO_STD(VIDIOC_G_ENC_INDEX, vidioc_g_enc_index, v4l_print_enc_idx, 0),
2610 IOCTL_INFO_STD(VIDIOC_ENCODER_CMD, vidioc_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2611 IOCTL_INFO_STD(VIDIOC_TRY_ENCODER_CMD, vidioc_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2612 IOCTL_INFO_STD(VIDIOC_DECODER_CMD, vidioc_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
2613 IOCTL_INFO_STD(VIDIOC_TRY_DECODER_CMD, vidioc_try_decoder_cmd, v4l_print_decoder_cmd, 0),
2614 IOCTL_INFO_FNC(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
2615 IOCTL_INFO_FNC(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
2616 IOCTL_INFO_FNC(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
2617 IOCTL_INFO_STD(VIDIOC_S_DV_TIMINGS, vidioc_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_dv_timings, bt.flags)),
2618 IOCTL_INFO_STD(VIDIOC_G_DV_TIMINGS, vidioc_g_dv_timings, v4l_print_dv_timings, 0),
2619 IOCTL_INFO_FNC(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
2620 IOCTL_INFO_FNC(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
2621 IOCTL_INFO_FNC(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
2622 IOCTL_INFO_FNC(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2623 IOCTL_INFO_FNC(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
2624 IOCTL_INFO_STD(VIDIOC_ENUM_DV_TIMINGS, vidioc_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)),
2625 IOCTL_INFO_STD(VIDIOC_QUERY_DV_TIMINGS, vidioc_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY),
2626 IOCTL_INFO_STD(VIDIOC_DV_TIMINGS_CAP, vidioc_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, type)),
2627 IOCTL_INFO_FNC(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
2628 IOCTL_INFO_FNC(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
2629 IOCTL_INFO_FNC(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
2631 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
2633 bool v4l2_is_known_ioctl(unsigned int cmd)
2635 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2637 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
2640 struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd)
2642 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2644 if (test_bit(_IOC_NR(cmd), vdev->disable_locking))
2646 if (vdev->queue && vdev->queue->lock &&
2647 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
2648 return vdev->queue->lock;
2652 /* Common ioctl debug function. This function can be used by
2653 external ioctl messages as well as internal V4L ioctl */
2654 void v4l_printk_ioctl(const char *prefix, unsigned int cmd)
2656 const char *dir, *type;
2659 printk(KERN_DEBUG "%s: ", prefix);
2661 switch (_IOC_TYPE(cmd)) {
2666 if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
2670 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
2677 switch (_IOC_DIR(cmd)) {
2678 case _IOC_NONE: dir = "--"; break;
2679 case _IOC_READ: dir = "r-"; break;
2680 case _IOC_WRITE: dir = "-w"; break;
2681 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
2682 default: dir = "*ERR*"; break;
2684 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
2685 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
2687 EXPORT_SYMBOL(v4l_printk_ioctl);
2689 static long __video_do_ioctl(struct file *file,
2690 unsigned int cmd, void *arg)
2692 struct video_device *vfd = video_devdata(file);
2693 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
2694 bool write_only = false;
2695 struct v4l2_ioctl_info default_info;
2696 const struct v4l2_ioctl_info *info;
2697 void *fh = file->private_data;
2698 struct v4l2_fh *vfh = NULL;
2699 int dev_debug = vfd->dev_debug;
2703 pr_warn("%s: has no ioctl_ops.\n",
2704 video_device_node_name(vfd));
2708 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
2709 vfh = file->private_data;
2711 if (v4l2_is_known_ioctl(cmd)) {
2712 info = &v4l2_ioctls[_IOC_NR(cmd)];
2714 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) &&
2715 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
2718 if (vfh && (info->flags & INFO_FL_PRIO)) {
2719 ret = v4l2_prio_check(vfd->prio, vfh->prio);
2724 default_info.ioctl = cmd;
2725 default_info.flags = 0;
2726 default_info.debug = v4l_print_default;
2727 info = &default_info;
2730 write_only = _IOC_DIR(cmd) == _IOC_WRITE;
2731 if (info->flags & INFO_FL_STD) {
2732 typedef int (*vidioc_op)(struct file *file, void *fh, void *p);
2733 const void *p = vfd->ioctl_ops;
2734 const vidioc_op *vidioc = p + info->u.offset;
2736 ret = (*vidioc)(file, fh, arg);
2737 } else if (info->flags & INFO_FL_FUNC) {
2738 ret = info->u.func(ops, file, fh, arg);
2739 } else if (!ops->vidioc_default) {
2742 ret = ops->vidioc_default(file, fh,
2743 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
2748 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) {
2749 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) &&
2750 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF))
2753 v4l_printk_ioctl(video_device_node_name(vfd), cmd);
2755 pr_cont(": error %ld", ret);
2756 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG))
2758 else if (_IOC_DIR(cmd) == _IOC_NONE)
2759 info->debug(arg, write_only);
2762 info->debug(arg, write_only);
2769 static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
2770 void __user **user_ptr, void ***kernel_ptr)
2775 case VIDIOC_PREPARE_BUF:
2776 case VIDIOC_QUERYBUF:
2778 case VIDIOC_DQBUF: {
2779 struct v4l2_buffer *buf = parg;
2781 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
2782 if (buf->length > VIDEO_MAX_PLANES) {
2786 *user_ptr = (void __user *)buf->m.planes;
2787 *kernel_ptr = (void **)&buf->m.planes;
2788 *array_size = sizeof(struct v4l2_plane) * buf->length;
2795 case VIDIOC_S_EDID: {
2796 struct v4l2_edid *edid = parg;
2799 if (edid->blocks > 256) {
2803 *user_ptr = (void __user *)edid->edid;
2804 *kernel_ptr = (void **)&edid->edid;
2805 *array_size = edid->blocks * 128;
2811 case VIDIOC_S_EXT_CTRLS:
2812 case VIDIOC_G_EXT_CTRLS:
2813 case VIDIOC_TRY_EXT_CTRLS: {
2814 struct v4l2_ext_controls *ctrls = parg;
2816 if (ctrls->count != 0) {
2817 if (ctrls->count > V4L2_CID_MAX_CTRLS) {
2821 *user_ptr = (void __user *)ctrls->controls;
2822 *kernel_ptr = (void **)&ctrls->controls;
2823 *array_size = sizeof(struct v4l2_ext_control)
2835 video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
2839 void *mbuf = NULL, *array_buf = NULL;
2840 void *parg = (void *)arg;
2842 bool has_array_args;
2843 bool always_copy = false;
2844 size_t array_size = 0;
2845 void __user *user_ptr = NULL;
2846 void **kernel_ptr = NULL;
2848 /* Copy arguments into temp kernel buffer */
2849 if (_IOC_DIR(cmd) != _IOC_NONE) {
2850 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
2853 /* too big to allocate from stack */
2854 mbuf = kvmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
2861 if (_IOC_DIR(cmd) & _IOC_WRITE) {
2862 unsigned int n = _IOC_SIZE(cmd);
2865 * In some cases, only a few fields are used as input,
2866 * i.e. when the app sets "index" and then the driver
2867 * fills in the rest of the structure for the thing
2868 * with that index. We only need to copy up the first
2871 if (v4l2_is_known_ioctl(cmd)) {
2872 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags;
2874 if (flags & INFO_FL_CLEAR_MASK)
2875 n = (flags & INFO_FL_CLEAR_MASK) >> 16;
2876 always_copy = flags & INFO_FL_ALWAYS_COPY;
2879 if (copy_from_user(parg, (void __user *)arg, n))
2882 /* zero out anything we don't copy from userspace */
2883 if (n < _IOC_SIZE(cmd))
2884 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n);
2886 /* read-only ioctl */
2887 memset(parg, 0, _IOC_SIZE(cmd));
2891 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
2894 has_array_args = err;
2896 if (has_array_args) {
2897 array_buf = kvmalloc(array_size, GFP_KERNEL);
2899 if (array_buf == NULL)
2900 goto out_array_args;
2902 if (copy_from_user(array_buf, user_ptr, array_size))
2903 goto out_array_args;
2904 *kernel_ptr = array_buf;
2908 err = func(file, cmd, parg);
2909 if (err == -ENOTTY || err == -ENOIOCTLCMD) {
2915 if (cmd == VIDIOC_DQBUF)
2916 trace_v4l2_dqbuf(video_devdata(file)->minor, parg);
2917 else if (cmd == VIDIOC_QBUF)
2918 trace_v4l2_qbuf(video_devdata(file)->minor, parg);
2921 if (has_array_args) {
2922 *kernel_ptr = (void __force *)user_ptr;
2923 if (copy_to_user(user_ptr, array_buf, array_size))
2925 goto out_array_args;
2928 * Some ioctls can return an error, but still have valid
2929 * results that must be returned.
2931 if (err < 0 && !always_copy)
2935 /* Copy results into user buffer */
2936 switch (_IOC_DIR(cmd)) {
2938 case (_IOC_WRITE | _IOC_READ):
2939 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
2949 EXPORT_SYMBOL(video_usercopy);
2951 long video_ioctl2(struct file *file,
2952 unsigned int cmd, unsigned long arg)
2954 return video_usercopy(file, cmd, arg, __video_do_ioctl);
2956 EXPORT_SYMBOL(video_ioctl2);