2 * Video capture interface for Linux version 2
4 * A generic framework to process V4L2 ioctl commands.
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
11 * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1)
12 * Mauro Carvalho Chehab <mchehab@infradead.org> (version 2)
15 #include <linux/module.h>
16 #include <linux/slab.h>
17 #include <linux/types.h>
18 #include <linux/kernel.h>
19 #include <linux/version.h>
21 #include <linux/videodev2.h>
23 #include <media/v4l2-common.h>
24 #include <media/v4l2-ioctl.h>
25 #include <media/v4l2-ctrls.h>
26 #include <media/v4l2-fh.h>
27 #include <media/v4l2-event.h>
28 #include <media/v4l2-device.h>
29 #include <media/videobuf2-v4l2.h>
31 #include <trace/events/v4l2.h>
33 /* Zero out the end of the struct pointed to by p. Everything after, but
34 * not including, the specified field is cleared. */
35 #define CLEAR_AFTER_FIELD(p, field) \
36 memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \
37 0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field))
39 #define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls)
46 static const struct std_descr standards[] = {
47 { V4L2_STD_NTSC, "NTSC" },
48 { V4L2_STD_NTSC_M, "NTSC-M" },
49 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" },
50 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" },
51 { V4L2_STD_NTSC_443, "NTSC-443" },
52 { V4L2_STD_PAL, "PAL" },
53 { V4L2_STD_PAL_BG, "PAL-BG" },
54 { V4L2_STD_PAL_B, "PAL-B" },
55 { V4L2_STD_PAL_B1, "PAL-B1" },
56 { V4L2_STD_PAL_G, "PAL-G" },
57 { V4L2_STD_PAL_H, "PAL-H" },
58 { V4L2_STD_PAL_I, "PAL-I" },
59 { V4L2_STD_PAL_DK, "PAL-DK" },
60 { V4L2_STD_PAL_D, "PAL-D" },
61 { V4L2_STD_PAL_D1, "PAL-D1" },
62 { V4L2_STD_PAL_K, "PAL-K" },
63 { V4L2_STD_PAL_M, "PAL-M" },
64 { V4L2_STD_PAL_N, "PAL-N" },
65 { V4L2_STD_PAL_Nc, "PAL-Nc" },
66 { V4L2_STD_PAL_60, "PAL-60" },
67 { V4L2_STD_SECAM, "SECAM" },
68 { V4L2_STD_SECAM_B, "SECAM-B" },
69 { V4L2_STD_SECAM_G, "SECAM-G" },
70 { V4L2_STD_SECAM_H, "SECAM-H" },
71 { V4L2_STD_SECAM_DK, "SECAM-DK" },
72 { V4L2_STD_SECAM_D, "SECAM-D" },
73 { V4L2_STD_SECAM_K, "SECAM-K" },
74 { V4L2_STD_SECAM_K1, "SECAM-K1" },
75 { V4L2_STD_SECAM_L, "SECAM-L" },
76 { V4L2_STD_SECAM_LC, "SECAM-Lc" },
80 /* video4linux standard ID conversion to standard name
82 const char *v4l2_norm_to_name(v4l2_std_id id)
87 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
88 64 bit comparations. So, on that architecture, with some gcc
89 variants, compilation fails. Currently, the max value is 30bit wide.
93 for (i = 0; standards[i].std; i++)
94 if (myid == standards[i].std)
96 return standards[i].descr;
98 EXPORT_SYMBOL(v4l2_norm_to_name);
100 /* Returns frame period for the given standard */
101 void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod)
103 if (id & V4L2_STD_525_60) {
104 frameperiod->numerator = 1001;
105 frameperiod->denominator = 30000;
107 frameperiod->numerator = 1;
108 frameperiod->denominator = 25;
111 EXPORT_SYMBOL(v4l2_video_std_frame_period);
113 /* Fill in the fields of a v4l2_standard structure according to the
114 'id' and 'transmission' parameters. Returns negative on error. */
115 int v4l2_video_std_construct(struct v4l2_standard *vs,
116 int id, const char *name)
119 v4l2_video_std_frame_period(id, &vs->frameperiod);
120 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625;
121 strlcpy(vs->name, name, sizeof(vs->name));
124 EXPORT_SYMBOL(v4l2_video_std_construct);
126 /* ----------------------------------------------------------------- */
127 /* some arrays for pretty-printing debug messages of enum types */
129 const char *v4l2_field_names[] = {
130 [V4L2_FIELD_ANY] = "any",
131 [V4L2_FIELD_NONE] = "none",
132 [V4L2_FIELD_TOP] = "top",
133 [V4L2_FIELD_BOTTOM] = "bottom",
134 [V4L2_FIELD_INTERLACED] = "interlaced",
135 [V4L2_FIELD_SEQ_TB] = "seq-tb",
136 [V4L2_FIELD_SEQ_BT] = "seq-bt",
137 [V4L2_FIELD_ALTERNATE] = "alternate",
138 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",
139 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",
141 EXPORT_SYMBOL(v4l2_field_names);
143 const char *v4l2_type_names[] = {
145 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap",
146 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay",
147 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out",
148 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap",
149 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out",
150 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",
151 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out",
152 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay",
153 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane",
154 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane",
155 [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap",
156 [V4L2_BUF_TYPE_SDR_OUTPUT] = "sdr-out",
158 EXPORT_SYMBOL(v4l2_type_names);
160 static const char *v4l2_memory_names[] = {
161 [V4L2_MEMORY_MMAP] = "mmap",
162 [V4L2_MEMORY_USERPTR] = "userptr",
163 [V4L2_MEMORY_OVERLAY] = "overlay",
164 [V4L2_MEMORY_DMABUF] = "dmabuf",
167 #define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown")
169 /* ------------------------------------------------------------------ */
170 /* debug help functions */
172 static void v4l_print_querycap(const void *arg, bool write_only)
174 const struct v4l2_capability *p = arg;
176 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, "
177 "capabilities=0x%08x, device_caps=0x%08x\n",
178 (int)sizeof(p->driver), p->driver,
179 (int)sizeof(p->card), p->card,
180 (int)sizeof(p->bus_info), p->bus_info,
181 p->version, p->capabilities, p->device_caps);
184 static void v4l_print_enuminput(const void *arg, bool write_only)
186 const struct v4l2_input *p = arg;
188 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, "
189 "std=0x%08Lx, status=0x%x, capabilities=0x%x\n",
190 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
191 p->tuner, (unsigned long long)p->std, p->status,
195 static void v4l_print_enumoutput(const void *arg, bool write_only)
197 const struct v4l2_output *p = arg;
199 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, "
200 "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;
253 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
255 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
256 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
258 pr_cont(", width=%u, height=%u, "
259 "pixelformat=%c%c%c%c, field=%s, "
260 "bytesperline=%u, sizeimage=%u, colorspace=%d, "
261 "flags=0x%x, ycbcr_enc=%u, quantization=%u, "
263 pix->width, pix->height,
264 (pix->pixelformat & 0xff),
265 (pix->pixelformat >> 8) & 0xff,
266 (pix->pixelformat >> 16) & 0xff,
267 (pix->pixelformat >> 24) & 0xff,
268 prt_names(pix->field, v4l2_field_names),
269 pix->bytesperline, pix->sizeimage,
270 pix->colorspace, pix->flags, pix->ycbcr_enc,
271 pix->quantization, pix->xfer_func);
273 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
274 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
276 pr_cont(", width=%u, height=%u, "
277 "format=%c%c%c%c, field=%s, "
278 "colorspace=%d, num_planes=%u, flags=0x%x, "
279 "ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",
280 mp->width, mp->height,
281 (mp->pixelformat & 0xff),
282 (mp->pixelformat >> 8) & 0xff,
283 (mp->pixelformat >> 16) & 0xff,
284 (mp->pixelformat >> 24) & 0xff,
285 prt_names(mp->field, v4l2_field_names),
286 mp->colorspace, mp->num_planes, mp->flags,
287 mp->ycbcr_enc, mp->quantization, mp->xfer_func);
288 for (i = 0; i < mp->num_planes; i++)
289 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i,
290 mp->plane_fmt[i].bytesperline,
291 mp->plane_fmt[i].sizeimage);
293 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
294 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
296 /* Note: we can't print the clip list here since the clips
297 * pointer is a userspace pointer, not a kernelspace
299 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",
300 win->w.width, win->w.height, win->w.left, win->w.top,
301 prt_names(win->field, v4l2_field_names),
302 win->chromakey, win->clipcount, win->clips,
303 win->bitmap, win->global_alpha);
305 case V4L2_BUF_TYPE_VBI_CAPTURE:
306 case V4L2_BUF_TYPE_VBI_OUTPUT:
308 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, "
309 "sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n",
310 vbi->sampling_rate, vbi->offset,
311 vbi->samples_per_line,
312 (vbi->sample_format & 0xff),
313 (vbi->sample_format >> 8) & 0xff,
314 (vbi->sample_format >> 16) & 0xff,
315 (vbi->sample_format >> 24) & 0xff,
316 vbi->start[0], vbi->start[1],
317 vbi->count[0], vbi->count[1]);
319 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
320 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
321 sliced = &p->fmt.sliced;
322 pr_cont(", service_set=0x%08x, io_size=%d\n",
323 sliced->service_set, sliced->io_size);
324 for (i = 0; i < 24; i++)
325 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
326 sliced->service_lines[0][i],
327 sliced->service_lines[1][i]);
329 case V4L2_BUF_TYPE_SDR_CAPTURE:
330 case V4L2_BUF_TYPE_SDR_OUTPUT:
332 pr_cont(", pixelformat=%c%c%c%c\n",
333 (sdr->pixelformat >> 0) & 0xff,
334 (sdr->pixelformat >> 8) & 0xff,
335 (sdr->pixelformat >> 16) & 0xff,
336 (sdr->pixelformat >> 24) & 0xff);
341 static void v4l_print_framebuffer(const void *arg, bool write_only)
343 const struct v4l2_framebuffer *p = arg;
345 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, "
346 "height=%u, pixelformat=%c%c%c%c, "
347 "bytesperline=%u, sizeimage=%u, colorspace=%d\n",
348 p->capability, p->flags, p->base,
349 p->fmt.width, p->fmt.height,
350 (p->fmt.pixelformat & 0xff),
351 (p->fmt.pixelformat >> 8) & 0xff,
352 (p->fmt.pixelformat >> 16) & 0xff,
353 (p->fmt.pixelformat >> 24) & 0xff,
354 p->fmt.bytesperline, p->fmt.sizeimage,
358 static void v4l_print_buftype(const void *arg, bool write_only)
360 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names));
363 static void v4l_print_modulator(const void *arg, bool write_only)
365 const struct v4l2_modulator *p = arg;
368 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans);
370 pr_cont("index=%u, name=%.*s, capability=0x%x, "
371 "rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
372 p->index, (int)sizeof(p->name), p->name, p->capability,
373 p->rangelow, p->rangehigh, p->txsubchans);
376 static void v4l_print_tuner(const void *arg, bool write_only)
378 const struct v4l2_tuner *p = arg;
381 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode);
383 pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, "
384 "rangelow=%u, rangehigh=%u, signal=%u, afc=%d, "
385 "rxsubchans=0x%x, audmode=%u\n",
386 p->index, (int)sizeof(p->name), p->name, p->type,
387 p->capability, p->rangelow,
388 p->rangehigh, p->signal, p->afc,
389 p->rxsubchans, p->audmode);
392 static void v4l_print_frequency(const void *arg, bool write_only)
394 const struct v4l2_frequency *p = arg;
396 pr_cont("tuner=%u, type=%u, frequency=%u\n",
397 p->tuner, p->type, p->frequency);
400 static void v4l_print_standard(const void *arg, bool write_only)
402 const struct v4l2_standard *p = arg;
404 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, "
405 "framelines=%u\n", p->index,
406 (unsigned long long)p->id, (int)sizeof(p->name), p->name,
407 p->frameperiod.numerator,
408 p->frameperiod.denominator,
412 static void v4l_print_std(const void *arg, bool write_only)
414 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg);
417 static void v4l_print_hw_freq_seek(const void *arg, bool write_only)
419 const struct v4l2_hw_freq_seek *p = arg;
421 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, "
422 "rangelow=%u, rangehigh=%u\n",
423 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing,
424 p->rangelow, p->rangehigh);
427 static void v4l_print_requestbuffers(const void *arg, bool write_only)
429 const struct v4l2_requestbuffers *p = arg;
431 pr_cont("count=%d, type=%s, memory=%s\n",
433 prt_names(p->type, v4l2_type_names),
434 prt_names(p->memory, v4l2_memory_names));
437 static void v4l_print_buffer(const void *arg, bool write_only)
439 const struct v4l2_buffer *p = arg;
440 const struct v4l2_timecode *tc = &p->timecode;
441 const struct v4l2_plane *plane;
444 pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, "
445 "flags=0x%08x, field=%s, sequence=%d, memory=%s",
446 p->timestamp.tv_sec / 3600,
447 (int)(p->timestamp.tv_sec / 60) % 60,
448 (int)(p->timestamp.tv_sec % 60),
449 (long)p->timestamp.tv_usec,
451 prt_names(p->type, v4l2_type_names),
452 p->flags, prt_names(p->field, v4l2_field_names),
453 p->sequence, prt_names(p->memory, v4l2_memory_names));
455 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
457 for (i = 0; i < p->length; ++i) {
458 plane = &p->m.planes[i];
460 "plane %d: bytesused=%d, data_offset=0x%08x, "
461 "offset/userptr=0x%lx, length=%d\n",
462 i, plane->bytesused, plane->data_offset,
463 plane->m.userptr, plane->length);
466 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n",
467 p->bytesused, p->m.userptr, p->length);
470 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, "
471 "flags=0x%08x, frames=%d, userbits=0x%08x\n",
472 tc->hours, tc->minutes, tc->seconds,
473 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
476 static void v4l_print_exportbuffer(const void *arg, bool write_only)
478 const struct v4l2_exportbuffer *p = arg;
480 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n",
481 p->fd, prt_names(p->type, v4l2_type_names),
482 p->index, p->plane, p->flags);
485 static void v4l_print_create_buffers(const void *arg, bool write_only)
487 const struct v4l2_create_buffers *p = arg;
489 pr_cont("index=%d, count=%d, memory=%s, ",
491 prt_names(p->memory, v4l2_memory_names));
492 v4l_print_format(&p->format, write_only);
495 static void v4l_print_streamparm(const void *arg, bool write_only)
497 const struct v4l2_streamparm *p = arg;
499 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
501 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
502 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
503 const struct v4l2_captureparm *c = &p->parm.capture;
505 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, "
506 "extendedmode=%d, readbuffers=%d\n",
507 c->capability, c->capturemode,
508 c->timeperframe.numerator, c->timeperframe.denominator,
509 c->extendedmode, c->readbuffers);
510 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
511 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
512 const struct v4l2_outputparm *c = &p->parm.output;
514 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, "
515 "extendedmode=%d, writebuffers=%d\n",
516 c->capability, c->outputmode,
517 c->timeperframe.numerator, c->timeperframe.denominator,
518 c->extendedmode, c->writebuffers);
524 static void v4l_print_queryctrl(const void *arg, bool write_only)
526 const struct v4l2_queryctrl *p = arg;
528 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, "
529 "step=%d, default=%d, flags=0x%08x\n",
530 p->id, p->type, (int)sizeof(p->name), p->name,
531 p->minimum, p->maximum,
532 p->step, p->default_value, p->flags);
535 static void v4l_print_query_ext_ctrl(const void *arg, bool write_only)
537 const struct v4l2_query_ext_ctrl *p = arg;
539 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%lld/%lld, "
540 "step=%lld, default=%lld, flags=0x%08x, elem_size=%u, elems=%u, "
541 "nr_of_dims=%u, dims=%u,%u,%u,%u\n",
542 p->id, p->type, (int)sizeof(p->name),
543 p->name, p->minimum, p->maximum,
544 p->step, p->default_value, p->flags,
545 p->elem_size, p->elems, p->nr_of_dims,
546 p->dims[0], p->dims[1], p->dims[2], p->dims[3]);
549 static void v4l_print_querymenu(const void *arg, bool write_only)
551 const struct v4l2_querymenu *p = arg;
553 pr_cont("id=0x%x, index=%d\n", p->id, p->index);
556 static void v4l_print_control(const void *arg, bool write_only)
558 const struct v4l2_control *p = arg;
560 pr_cont("id=0x%x, value=%d\n", p->id, p->value);
563 static void v4l_print_ext_controls(const void *arg, bool write_only)
565 const struct v4l2_ext_controls *p = arg;
568 pr_cont("which=0x%x, count=%d, error_idx=%d",
569 p->which, p->count, p->error_idx);
570 for (i = 0; i < p->count; i++) {
571 if (!p->controls[i].size)
572 pr_cont(", id/val=0x%x/0x%x",
573 p->controls[i].id, p->controls[i].value);
575 pr_cont(", id/size=0x%x/%u",
576 p->controls[i].id, p->controls[i].size);
581 static void v4l_print_cropcap(const void *arg, bool write_only)
583 const struct v4l2_cropcap *p = arg;
585 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, "
586 "defrect wxh=%dx%d, x,y=%d,%d, "
587 "pixelaspect %d/%d\n",
588 prt_names(p->type, v4l2_type_names),
589 p->bounds.width, p->bounds.height,
590 p->bounds.left, p->bounds.top,
591 p->defrect.width, p->defrect.height,
592 p->defrect.left, p->defrect.top,
593 p->pixelaspect.numerator, p->pixelaspect.denominator);
596 static void v4l_print_crop(const void *arg, bool write_only)
598 const struct v4l2_crop *p = arg;
600 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n",
601 prt_names(p->type, v4l2_type_names),
602 p->c.width, p->c.height,
603 p->c.left, p->c.top);
606 static void v4l_print_selection(const void *arg, bool write_only)
608 const struct v4l2_selection *p = arg;
610 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n",
611 prt_names(p->type, v4l2_type_names),
613 p->r.width, p->r.height, p->r.left, p->r.top);
616 static void v4l_print_jpegcompression(const void *arg, bool write_only)
618 const struct v4l2_jpegcompression *p = arg;
620 pr_cont("quality=%d, APPn=%d, APP_len=%d, "
621 "COM_len=%d, jpeg_markers=0x%x\n",
622 p->quality, p->APPn, p->APP_len,
623 p->COM_len, p->jpeg_markers);
626 static void v4l_print_enc_idx(const void *arg, bool write_only)
628 const struct v4l2_enc_idx *p = arg;
630 pr_cont("entries=%d, entries_cap=%d\n",
631 p->entries, p->entries_cap);
634 static void v4l_print_encoder_cmd(const void *arg, bool write_only)
636 const struct v4l2_encoder_cmd *p = arg;
638 pr_cont("cmd=%d, flags=0x%x\n",
642 static void v4l_print_decoder_cmd(const void *arg, bool write_only)
644 const struct v4l2_decoder_cmd *p = arg;
646 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags);
648 if (p->cmd == V4L2_DEC_CMD_START)
649 pr_info("speed=%d, format=%u\n",
650 p->start.speed, p->start.format);
651 else if (p->cmd == V4L2_DEC_CMD_STOP)
652 pr_info("pts=%llu\n", p->stop.pts);
655 static void v4l_print_dbg_chip_info(const void *arg, bool write_only)
657 const struct v4l2_dbg_chip_info *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("name=%.*s\n", (int)sizeof(p->name), p->name);
668 static void v4l_print_dbg_register(const void *arg, bool write_only)
670 const struct v4l2_dbg_register *p = arg;
672 pr_cont("type=%u, ", p->match.type);
673 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
674 pr_cont("name=%.*s, ",
675 (int)sizeof(p->match.name), p->match.name);
677 pr_cont("addr=%u, ", p->match.addr);
678 pr_cont("reg=0x%llx, val=0x%llx\n",
682 static void v4l_print_dv_timings(const void *arg, bool write_only)
684 const struct v4l2_dv_timings *p = arg;
687 case V4L2_DV_BT_656_1120:
688 pr_cont("type=bt-656/1120, interlaced=%u, "
690 "width=%u, height=%u, polarities=0x%x, "
691 "hfrontporch=%u, hsync=%u, "
692 "hbackporch=%u, vfrontporch=%u, "
693 "vsync=%u, vbackporch=%u, "
694 "il_vfrontporch=%u, il_vsync=%u, "
695 "il_vbackporch=%u, standards=0x%x, flags=0x%x\n",
696 p->bt.interlaced, p->bt.pixelclock,
697 p->bt.width, p->bt.height,
698 p->bt.polarities, p->bt.hfrontporch,
699 p->bt.hsync, p->bt.hbackporch,
700 p->bt.vfrontporch, p->bt.vsync,
701 p->bt.vbackporch, p->bt.il_vfrontporch,
702 p->bt.il_vsync, p->bt.il_vbackporch,
703 p->bt.standards, p->bt.flags);
706 pr_cont("type=%d\n", p->type);
711 static void v4l_print_enum_dv_timings(const void *arg, bool write_only)
713 const struct v4l2_enum_dv_timings *p = arg;
715 pr_cont("index=%u, ", p->index);
716 v4l_print_dv_timings(&p->timings, write_only);
719 static void v4l_print_dv_timings_cap(const void *arg, bool write_only)
721 const struct v4l2_dv_timings_cap *p = arg;
724 case V4L2_DV_BT_656_1120:
725 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, "
726 "pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
727 p->bt.min_width, p->bt.max_width,
728 p->bt.min_height, p->bt.max_height,
729 p->bt.min_pixelclock, p->bt.max_pixelclock,
730 p->bt.standards, p->bt.capabilities);
733 pr_cont("type=%u\n", p->type);
738 static void v4l_print_frmsizeenum(const void *arg, bool write_only)
740 const struct v4l2_frmsizeenum *p = arg;
742 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u",
744 (p->pixel_format & 0xff),
745 (p->pixel_format >> 8) & 0xff,
746 (p->pixel_format >> 16) & 0xff,
747 (p->pixel_format >> 24) & 0xff,
750 case V4L2_FRMSIZE_TYPE_DISCRETE:
751 pr_cont(", wxh=%ux%u\n",
752 p->discrete.width, p->discrete.height);
754 case V4L2_FRMSIZE_TYPE_STEPWISE:
755 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n",
756 p->stepwise.min_width, p->stepwise.min_height,
757 p->stepwise.step_width, p->stepwise.step_height,
758 p->stepwise.max_width, p->stepwise.max_height);
760 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
768 static void v4l_print_frmivalenum(const void *arg, bool write_only)
770 const struct v4l2_frmivalenum *p = arg;
772 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u",
774 (p->pixel_format & 0xff),
775 (p->pixel_format >> 8) & 0xff,
776 (p->pixel_format >> 16) & 0xff,
777 (p->pixel_format >> 24) & 0xff,
778 p->width, p->height, p->type);
780 case V4L2_FRMIVAL_TYPE_DISCRETE:
781 pr_cont(", fps=%d/%d\n",
782 p->discrete.numerator,
783 p->discrete.denominator);
785 case V4L2_FRMIVAL_TYPE_STEPWISE:
786 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n",
787 p->stepwise.min.numerator,
788 p->stepwise.min.denominator,
789 p->stepwise.max.numerator,
790 p->stepwise.max.denominator,
791 p->stepwise.step.numerator,
792 p->stepwise.step.denominator);
794 case V4L2_FRMIVAL_TYPE_CONTINUOUS:
802 static void v4l_print_event(const void *arg, bool write_only)
804 const struct v4l2_event *p = arg;
805 const struct v4l2_event_ctrl *c;
807 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, "
808 "timestamp=%lu.%9.9lu\n",
809 p->type, p->pending, p->sequence, p->id,
810 p->timestamp.tv_sec, p->timestamp.tv_nsec);
812 case V4L2_EVENT_VSYNC:
813 printk(KERN_DEBUG "field=%s\n",
814 prt_names(p->u.vsync.field, v4l2_field_names));
816 case V4L2_EVENT_CTRL:
818 printk(KERN_DEBUG "changes=0x%x, type=%u, ",
819 c->changes, c->type);
820 if (c->type == V4L2_CTRL_TYPE_INTEGER64)
821 pr_cont("value64=%lld, ", c->value64);
823 pr_cont("value=%d, ", c->value);
824 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, "
825 "default_value=%d\n",
826 c->flags, c->minimum, c->maximum,
827 c->step, c->default_value);
829 case V4L2_EVENT_FRAME_SYNC:
830 pr_cont("frame_sequence=%u\n",
831 p->u.frame_sync.frame_sequence);
836 static void v4l_print_event_subscription(const void *arg, bool write_only)
838 const struct v4l2_event_subscription *p = arg;
840 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
841 p->type, p->id, p->flags);
844 static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only)
846 const struct v4l2_sliced_vbi_cap *p = arg;
849 pr_cont("type=%s, service_set=0x%08x\n",
850 prt_names(p->type, v4l2_type_names), p->service_set);
851 for (i = 0; i < 24; i++)
852 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
853 p->service_lines[0][i],
854 p->service_lines[1][i]);
857 static void v4l_print_freq_band(const void *arg, bool write_only)
859 const struct v4l2_frequency_band *p = arg;
861 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, "
862 "rangelow=%u, rangehigh=%u, modulation=0x%x\n",
863 p->tuner, p->type, p->index,
864 p->capability, p->rangelow,
865 p->rangehigh, p->modulation);
868 static void v4l_print_edid(const void *arg, bool write_only)
870 const struct v4l2_edid *p = arg;
872 pr_cont("pad=%u, start_block=%u, blocks=%u\n",
873 p->pad, p->start_block, p->blocks);
876 static void v4l_print_u32(const void *arg, bool write_only)
878 pr_cont("value=%u\n", *(const u32 *)arg);
881 static void v4l_print_newline(const void *arg, bool write_only)
886 static void v4l_print_default(const void *arg, bool write_only)
888 pr_cont("driver-specific ioctl\n");
891 static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
895 /* zero the reserved fields */
896 c->reserved[0] = c->reserved[1] = 0;
897 for (i = 0; i < c->count; i++)
898 c->controls[i].reserved2[0] = 0;
900 /* V4L2_CID_PRIVATE_BASE cannot be used as control class
901 when using extended controls.
902 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
903 is it allowed for backwards compatibility.
905 if (!allow_priv && c->which == V4L2_CID_PRIVATE_BASE)
909 /* Check that all controls are from the same control class. */
910 for (i = 0; i < c->count; i++) {
911 if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) {
919 static int check_fmt(struct file *file, enum v4l2_buf_type type)
921 struct video_device *vfd = video_devdata(file);
922 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
923 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
924 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI;
925 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
926 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
927 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
933 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
934 if (is_vid && is_rx &&
935 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane))
938 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
939 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_cap_mplane)
942 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
943 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay)
946 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
947 if (is_vid && is_tx &&
948 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane))
951 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
952 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane)
955 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
956 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay)
959 case V4L2_BUF_TYPE_VBI_CAPTURE:
960 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap)
963 case V4L2_BUF_TYPE_VBI_OUTPUT:
964 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out)
967 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
968 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap)
971 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
972 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out)
975 case V4L2_BUF_TYPE_SDR_CAPTURE:
976 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap)
979 case V4L2_BUF_TYPE_SDR_OUTPUT:
980 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out)
989 static void v4l_sanitize_format(struct v4l2_format *fmt)
994 * The v4l2_pix_format structure has been extended with fields that were
995 * not previously required to be set to zero by applications. The priv
996 * field, when set to a magic value, indicates the the extended fields
997 * are valid. Otherwise they will contain undefined values. To simplify
998 * the API towards drivers zero the extended fields and set the priv
999 * field to the magic value when the extended pixel format structure
1000 * isn't used by applications.
1003 if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1004 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1007 if (fmt->fmt.pix.priv == V4L2_PIX_FMT_PRIV_MAGIC)
1010 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1012 offset = offsetof(struct v4l2_pix_format, priv)
1013 + sizeof(fmt->fmt.pix.priv);
1014 memset(((void *)&fmt->fmt.pix) + offset, 0,
1015 sizeof(fmt->fmt.pix) - offset);
1018 static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
1019 struct file *file, void *fh, void *arg)
1021 struct v4l2_capability *cap = (struct v4l2_capability *)arg;
1024 cap->version = LINUX_VERSION_CODE;
1026 ret = ops->vidioc_querycap(file, fh, cap);
1028 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT;
1030 * Drivers MUST fill in device_caps, so check for this and
1031 * warn if it was forgotten.
1033 WARN(!(cap->capabilities & V4L2_CAP_DEVICE_CAPS) ||
1034 !cap->device_caps, "Bad caps for driver %s, %x %x",
1035 cap->driver, cap->capabilities, cap->device_caps);
1036 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT;
1041 static int v4l_s_input(const struct v4l2_ioctl_ops *ops,
1042 struct file *file, void *fh, void *arg)
1044 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg);
1047 static int v4l_s_output(const struct v4l2_ioctl_ops *ops,
1048 struct file *file, void *fh, void *arg)
1050 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg);
1053 static int v4l_g_priority(const struct v4l2_ioctl_ops *ops,
1054 struct file *file, void *fh, void *arg)
1056 struct video_device *vfd;
1059 vfd = video_devdata(file);
1060 *p = v4l2_prio_max(vfd->prio);
1064 static int v4l_s_priority(const struct v4l2_ioctl_ops *ops,
1065 struct file *file, void *fh, void *arg)
1067 struct video_device *vfd;
1068 struct v4l2_fh *vfh;
1071 vfd = video_devdata(file);
1072 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
1074 vfh = file->private_data;
1075 return v4l2_prio_change(vfd->prio, &vfh->prio, *p);
1078 static int v4l_enuminput(const struct v4l2_ioctl_ops *ops,
1079 struct file *file, void *fh, void *arg)
1081 struct video_device *vfd = video_devdata(file);
1082 struct v4l2_input *p = arg;
1085 * We set the flags for CAP_DV_TIMINGS &
1086 * CAP_STD here based on ioctl handler provided by the
1087 * driver. If the driver doesn't support these
1088 * for a specific input, it must override these flags.
1090 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1091 p->capabilities |= V4L2_IN_CAP_STD;
1093 return ops->vidioc_enum_input(file, fh, p);
1096 static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops,
1097 struct file *file, void *fh, void *arg)
1099 struct video_device *vfd = video_devdata(file);
1100 struct v4l2_output *p = arg;
1103 * We set the flags for CAP_DV_TIMINGS &
1104 * CAP_STD here based on ioctl handler provided by the
1105 * driver. If the driver doesn't support these
1106 * for a specific output, it must override these flags.
1108 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1109 p->capabilities |= V4L2_OUT_CAP_STD;
1111 return ops->vidioc_enum_output(file, fh, p);
1114 static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
1116 const unsigned sz = sizeof(fmt->description);
1117 const char *descr = NULL;
1121 * We depart from the normal coding style here since the descriptions
1122 * should be aligned so it is easy to see which descriptions will be
1123 * longer than 31 characters (the max length for a description).
1124 * And frankly, this is easier to read anyway.
1126 * Note that gcc will use O(log N) comparisons to find the right case.
1128 switch (fmt->pixelformat) {
1129 /* Max description length mask: descr = "0123456789012345678901234567890" */
1130 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break;
1131 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break;
1132 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break;
1133 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break;
1134 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break;
1135 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break;
1136 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break;
1137 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break;
1138 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break;
1139 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break;
1140 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break;
1141 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break;
1142 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break;
1143 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break;
1144 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break;
1145 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break;
1146 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break;
1147 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break;
1148 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break;
1149 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break;
1150 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break;
1151 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break;
1152 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break;
1153 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break;
1154 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break;
1155 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break;
1156 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break;
1157 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break;
1158 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break;
1159 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break;
1160 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break;
1161 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break;
1162 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break;
1163 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break;
1164 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break;
1165 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break;
1166 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break;
1167 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break;
1168 case V4L2_PIX_FMT_YUV422P: descr = "Planar YVU 4:2:2"; break;
1169 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break;
1170 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break;
1171 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break;
1172 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break;
1173 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break;
1174 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break;
1175 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break;
1176 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break;
1177 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break;
1178 case V4L2_PIX_FMT_HM12: descr = "YUV 4:2:0 (16x16 Macroblocks)"; break;
1179 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break;
1180 case V4L2_PIX_FMT_NV12: descr = "Y/CbCr 4:2:0"; break;
1181 case V4L2_PIX_FMT_NV21: descr = "Y/CrCb 4:2:0"; break;
1182 case V4L2_PIX_FMT_NV16: descr = "Y/CbCr 4:2:2"; break;
1183 case V4L2_PIX_FMT_NV61: descr = "Y/CrCb 4:2:2"; break;
1184 case V4L2_PIX_FMT_NV24: descr = "Y/CbCr 4:4:4"; break;
1185 case V4L2_PIX_FMT_NV42: descr = "Y/CrCb 4:4:4"; break;
1186 case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break;
1187 case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break;
1188 case V4L2_PIX_FMT_NV16M: descr = "Y/CbCr 4:2:2 (N-C)"; break;
1189 case V4L2_PIX_FMT_NV61M: descr = "Y/CrCb 4:2:2 (N-C)"; break;
1190 case V4L2_PIX_FMT_NV12MT: descr = "Y/CbCr 4:2:0 (64x32 MB, N-C)"; break;
1191 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/CbCr 4:2:0 (16x16 MB, N-C)"; break;
1192 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break;
1193 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break;
1194 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break;
1195 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break;
1196 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break;
1197 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break;
1198 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break;
1199 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break;
1200 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break;
1201 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break;
1202 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break;
1203 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break;
1204 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break;
1205 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break;
1206 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break;
1207 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break;
1208 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break;
1209 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break;
1210 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break;
1211 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break;
1212 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break;
1213 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break;
1214 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break;
1215 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break;
1216 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break;
1217 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break;
1218 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR (Exp.)"; break;
1219 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break;
1220 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break;
1221 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break;
1222 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break;
1223 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break;
1224 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break;
1225 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break;
1226 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break;
1227 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break;
1228 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break;
1229 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break;
1230 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break;
1231 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break;
1234 /* Compressed formats */
1235 flags = V4L2_FMT_FLAG_COMPRESSED;
1236 switch (fmt->pixelformat) {
1237 /* Max description length mask: descr = "0123456789012345678901234567890" */
1238 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break;
1239 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break;
1240 case V4L2_PIX_FMT_DV: descr = "1394"; break;
1241 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break;
1242 case V4L2_PIX_FMT_H264: descr = "H.264"; break;
1243 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break;
1244 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break;
1245 case V4L2_PIX_FMT_H264_SLICE: descr = "H.264 SLICE"; break;
1246 case V4L2_PIX_FMT_H263: descr = "H.263"; break;
1247 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break;
1248 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break;
1249 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 part 2 ES"; break;
1250 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break;
1251 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break;
1252 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break;
1253 case V4L2_PIX_FMT_VP8: descr = "VP8"; break;
1254 case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 FRAME"; break;
1255 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break;
1256 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break;
1257 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break;
1258 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break;
1259 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break;
1260 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break;
1261 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break;
1262 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break;
1263 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break;
1264 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break;
1265 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break;
1266 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break;
1267 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break;
1268 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break;
1269 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break;
1270 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break;
1271 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break;
1272 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break;
1274 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat);
1275 if (fmt->description[0])
1278 snprintf(fmt->description, sz, "%c%c%c%c%s",
1279 (char)(fmt->pixelformat & 0x7f),
1280 (char)((fmt->pixelformat >> 8) & 0x7f),
1281 (char)((fmt->pixelformat >> 16) & 0x7f),
1282 (char)((fmt->pixelformat >> 24) & 0x7f),
1283 (fmt->pixelformat & (1 << 31)) ? "-BE" : "");
1289 WARN_ON(strlcpy(fmt->description, descr, sz) >= sz);
1293 static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
1294 struct file *file, void *fh, void *arg)
1296 struct v4l2_fmtdesc *p = arg;
1297 struct video_device *vfd = video_devdata(file);
1298 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1299 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
1300 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1301 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
1305 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1306 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_cap))
1308 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
1310 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1311 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_cap_mplane))
1313 ret = ops->vidioc_enum_fmt_vid_cap_mplane(file, fh, arg);
1315 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1316 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_overlay))
1318 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
1320 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1321 if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out))
1323 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg);
1325 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1326 if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out_mplane))
1328 ret = ops->vidioc_enum_fmt_vid_out_mplane(file, fh, arg);
1330 case V4L2_BUF_TYPE_SDR_CAPTURE:
1331 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_enum_fmt_sdr_cap))
1333 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg);
1335 case V4L2_BUF_TYPE_SDR_OUTPUT:
1336 if (unlikely(!is_tx || !is_sdr || !ops->vidioc_enum_fmt_sdr_out))
1338 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg);
1342 v4l_fill_fmtdesc(p);
1346 static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
1347 struct file *file, void *fh, void *arg)
1349 struct v4l2_format *p = arg;
1350 struct video_device *vfd = video_devdata(file);
1351 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1352 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
1353 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1354 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
1358 * fmt can't be cleared for these overlay types due to the 'clips'
1359 * 'clipcount' and 'bitmap' pointers in struct v4l2_window.
1360 * Those are provided by the user. So handle these two overlay types
1361 * first, and then just do a simple memset for the other types.
1364 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1365 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: {
1366 struct v4l2_clip __user *clips = p->fmt.win.clips;
1367 u32 clipcount = p->fmt.win.clipcount;
1368 void __user *bitmap = p->fmt.win.bitmap;
1370 memset(&p->fmt, 0, sizeof(p->fmt));
1371 p->fmt.win.clips = clips;
1372 p->fmt.win.clipcount = clipcount;
1373 p->fmt.win.bitmap = bitmap;
1377 memset(&p->fmt, 0, sizeof(p->fmt));
1382 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1383 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap))
1385 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1386 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg);
1387 /* just in case the driver zeroed it again */
1388 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1390 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1391 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap_mplane))
1393 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
1394 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1395 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_overlay))
1397 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
1398 case V4L2_BUF_TYPE_VBI_CAPTURE:
1399 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_vbi_cap))
1401 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
1402 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1403 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_cap))
1405 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
1406 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1407 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out))
1409 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1410 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg);
1411 /* just in case the driver zeroed it again */
1412 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1414 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1415 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_mplane))
1417 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
1418 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1419 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_overlay))
1421 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
1422 case V4L2_BUF_TYPE_VBI_OUTPUT:
1423 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_vbi_out))
1425 return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
1426 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1427 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_out))
1429 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
1430 case V4L2_BUF_TYPE_SDR_CAPTURE:
1431 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_g_fmt_sdr_cap))
1433 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg);
1434 case V4L2_BUF_TYPE_SDR_OUTPUT:
1435 if (unlikely(!is_tx || !is_sdr || !ops->vidioc_g_fmt_sdr_out))
1437 return ops->vidioc_g_fmt_sdr_out(file, fh, arg);
1442 static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
1443 struct file *file, void *fh, void *arg)
1445 struct v4l2_format *p = arg;
1446 struct video_device *vfd = video_devdata(file);
1447 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1448 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
1449 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1450 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
1453 v4l_sanitize_format(p);
1456 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1457 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap))
1459 CLEAR_AFTER_FIELD(p, fmt.pix);
1460 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg);
1461 /* just in case the driver zeroed it again */
1462 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1464 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1465 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap_mplane))
1467 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1468 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
1469 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1470 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_overlay))
1472 CLEAR_AFTER_FIELD(p, fmt.win);
1473 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
1474 case V4L2_BUF_TYPE_VBI_CAPTURE:
1475 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_vbi_cap))
1477 CLEAR_AFTER_FIELD(p, fmt.vbi);
1478 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
1479 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1480 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_cap))
1482 CLEAR_AFTER_FIELD(p, fmt.sliced);
1483 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
1484 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1485 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out))
1487 CLEAR_AFTER_FIELD(p, fmt.pix);
1488 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg);
1489 /* just in case the driver zeroed it again */
1490 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1492 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1493 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_mplane))
1495 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1496 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
1497 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1498 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_overlay))
1500 CLEAR_AFTER_FIELD(p, fmt.win);
1501 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
1502 case V4L2_BUF_TYPE_VBI_OUTPUT:
1503 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_vbi_out))
1505 CLEAR_AFTER_FIELD(p, fmt.vbi);
1506 return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
1507 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1508 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_out))
1510 CLEAR_AFTER_FIELD(p, fmt.sliced);
1511 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
1512 case V4L2_BUF_TYPE_SDR_CAPTURE:
1513 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_s_fmt_sdr_cap))
1515 CLEAR_AFTER_FIELD(p, fmt.sdr);
1516 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg);
1517 case V4L2_BUF_TYPE_SDR_OUTPUT:
1518 if (unlikely(!is_tx || !is_sdr || !ops->vidioc_s_fmt_sdr_out))
1520 CLEAR_AFTER_FIELD(p, fmt.sdr);
1521 return ops->vidioc_s_fmt_sdr_out(file, fh, arg);
1526 static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
1527 struct file *file, void *fh, void *arg)
1529 struct v4l2_format *p = arg;
1530 struct video_device *vfd = video_devdata(file);
1531 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1532 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
1533 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1534 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
1537 v4l_sanitize_format(p);
1540 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1541 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap))
1543 CLEAR_AFTER_FIELD(p, fmt.pix);
1544 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg);
1545 /* just in case the driver zeroed it again */
1546 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1548 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1549 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap_mplane))
1551 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1552 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
1553 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1554 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_overlay))
1556 CLEAR_AFTER_FIELD(p, fmt.win);
1557 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
1558 case V4L2_BUF_TYPE_VBI_CAPTURE:
1559 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_vbi_cap))
1561 CLEAR_AFTER_FIELD(p, fmt.vbi);
1562 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
1563 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1564 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_cap))
1566 CLEAR_AFTER_FIELD(p, fmt.sliced);
1567 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
1568 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1569 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out))
1571 CLEAR_AFTER_FIELD(p, fmt.pix);
1572 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg);
1573 /* just in case the driver zeroed it again */
1574 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1576 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1577 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_mplane))
1579 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1580 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
1581 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1582 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_overlay))
1584 CLEAR_AFTER_FIELD(p, fmt.win);
1585 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
1586 case V4L2_BUF_TYPE_VBI_OUTPUT:
1587 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_vbi_out))
1589 CLEAR_AFTER_FIELD(p, fmt.vbi);
1590 return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
1591 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1592 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_out))
1594 CLEAR_AFTER_FIELD(p, fmt.sliced);
1595 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
1596 case V4L2_BUF_TYPE_SDR_CAPTURE:
1597 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_try_fmt_sdr_cap))
1599 CLEAR_AFTER_FIELD(p, fmt.sdr);
1600 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg);
1601 case V4L2_BUF_TYPE_SDR_OUTPUT:
1602 if (unlikely(!is_tx || !is_sdr || !ops->vidioc_try_fmt_sdr_out))
1604 CLEAR_AFTER_FIELD(p, fmt.sdr);
1605 return ops->vidioc_try_fmt_sdr_out(file, fh, arg);
1610 static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
1611 struct file *file, void *fh, void *arg)
1613 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
1616 static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
1617 struct file *file, void *fh, void *arg)
1619 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
1622 static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,
1623 struct file *file, void *fh, void *arg)
1625 struct video_device *vfd = video_devdata(file);
1626 struct v4l2_tuner *p = arg;
1629 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1630 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1631 err = ops->vidioc_g_tuner(file, fh, p);
1633 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1637 static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
1638 struct file *file, void *fh, void *arg)
1640 struct video_device *vfd = video_devdata(file);
1641 struct v4l2_tuner *p = arg;
1643 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1644 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1645 return ops->vidioc_s_tuner(file, fh, p);
1648 static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,
1649 struct file *file, void *fh, void *arg)
1651 struct video_device *vfd = video_devdata(file);
1652 struct v4l2_modulator *p = arg;
1655 if (vfd->vfl_type == VFL_TYPE_RADIO)
1656 p->type = V4L2_TUNER_RADIO;
1658 err = ops->vidioc_g_modulator(file, fh, p);
1660 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1664 static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops,
1665 struct file *file, void *fh, void *arg)
1667 struct video_device *vfd = video_devdata(file);
1668 struct v4l2_modulator *p = arg;
1670 if (vfd->vfl_type == VFL_TYPE_RADIO)
1671 p->type = V4L2_TUNER_RADIO;
1673 return ops->vidioc_s_modulator(file, fh, p);
1676 static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
1677 struct file *file, void *fh, void *arg)
1679 struct video_device *vfd = video_devdata(file);
1680 struct v4l2_frequency *p = arg;
1682 if (vfd->vfl_type == VFL_TYPE_SDR)
1683 p->type = V4L2_TUNER_SDR;
1685 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1686 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1687 return ops->vidioc_g_frequency(file, fh, p);
1690 static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
1691 struct file *file, void *fh, void *arg)
1693 struct video_device *vfd = video_devdata(file);
1694 const struct v4l2_frequency *p = arg;
1695 enum v4l2_tuner_type type;
1697 if (vfd->vfl_type == VFL_TYPE_SDR) {
1698 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)
1701 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1702 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1703 if (type != p->type)
1706 return ops->vidioc_s_frequency(file, fh, p);
1709 static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
1710 struct file *file, void *fh, void *arg)
1712 struct video_device *vfd = video_devdata(file);
1713 struct v4l2_standard *p = arg;
1714 v4l2_std_id id = vfd->tvnorms, curr_id = 0;
1715 unsigned int index = p->index, i, j = 0;
1716 const char *descr = "";
1718 /* Return -ENODATA if the tvnorms for the current input
1719 or output is 0, meaning that it doesn't support this API. */
1723 /* Return norm array in a canonical way */
1724 for (i = 0; i <= index && id; i++) {
1725 /* last std value in the standards array is 0, so this
1726 while always ends there since (id & 0) == 0. */
1727 while ((id & standards[j].std) != standards[j].std)
1729 curr_id = standards[j].std;
1730 descr = standards[j].descr;
1734 if (curr_id != V4L2_STD_PAL &&
1735 curr_id != V4L2_STD_SECAM &&
1736 curr_id != V4L2_STD_NTSC)
1742 v4l2_video_std_construct(p, curr_id, descr);
1746 static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
1747 struct file *file, void *fh, void *arg)
1749 struct video_device *vfd = video_devdata(file);
1750 v4l2_std_id id = *(v4l2_std_id *)arg, norm;
1752 norm = id & vfd->tvnorms;
1753 if (vfd->tvnorms && !norm) /* Check if std is supported */
1756 /* Calls the specific handler */
1757 return ops->vidioc_s_std(file, fh, norm);
1760 static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
1761 struct file *file, void *fh, void *arg)
1763 struct video_device *vfd = video_devdata(file);
1764 v4l2_std_id *p = arg;
1767 * If no signal is detected, then the driver should return
1768 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with
1769 * any standards that do not apply removed.
1771 * This means that tuners, audio and video decoders can join
1772 * their efforts to improve the standards detection.
1775 return ops->vidioc_querystd(file, fh, arg);
1778 static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
1779 struct file *file, void *fh, void *arg)
1781 struct video_device *vfd = video_devdata(file);
1782 struct v4l2_hw_freq_seek *p = arg;
1783 enum v4l2_tuner_type type;
1785 /* s_hw_freq_seek is not supported for SDR for now */
1786 if (vfd->vfl_type == VFL_TYPE_SDR)
1789 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1790 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1791 if (p->type != type)
1793 return ops->vidioc_s_hw_freq_seek(file, fh, p);
1796 static int v4l_overlay(const struct v4l2_ioctl_ops *ops,
1797 struct file *file, void *fh, void *arg)
1799 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg);
1802 static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,
1803 struct file *file, void *fh, void *arg)
1805 struct v4l2_requestbuffers *p = arg;
1806 int ret = check_fmt(file, p->type);
1811 CLEAR_AFTER_FIELD(p, memory);
1813 return ops->vidioc_reqbufs(file, fh, p);
1816 static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,
1817 struct file *file, void *fh, void *arg)
1819 struct v4l2_buffer *p = arg;
1820 int ret = check_fmt(file, p->type);
1822 return ret ? ret : ops->vidioc_querybuf(file, fh, p);
1825 static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,
1826 struct file *file, void *fh, void *arg)
1828 struct v4l2_buffer *p = arg;
1829 int ret = check_fmt(file, p->type);
1831 return ret ? ret : ops->vidioc_qbuf(file, fh, p);
1834 static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,
1835 struct file *file, void *fh, void *arg)
1837 struct v4l2_buffer *p = arg;
1838 int ret = check_fmt(file, p->type);
1840 return ret ? ret : ops->vidioc_dqbuf(file, fh, p);
1843 static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
1844 struct file *file, void *fh, void *arg)
1846 struct v4l2_create_buffers *create = arg;
1847 int ret = check_fmt(file, create->format.type);
1852 CLEAR_AFTER_FIELD(create, format);
1854 v4l_sanitize_format(&create->format);
1856 ret = ops->vidioc_create_bufs(file, fh, create);
1858 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1859 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1860 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1865 static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
1866 struct file *file, void *fh, void *arg)
1868 struct v4l2_buffer *b = arg;
1869 int ret = check_fmt(file, b->type);
1871 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
1874 static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
1875 struct file *file, void *fh, void *arg)
1877 struct v4l2_streamparm *p = arg;
1879 int ret = check_fmt(file, p->type);
1883 if (ops->vidioc_g_parm)
1884 return ops->vidioc_g_parm(file, fh, p);
1885 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1886 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1888 p->parm.capture.readbuffers = 2;
1889 ret = ops->vidioc_g_std(file, fh, &std);
1891 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe);
1895 static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
1896 struct file *file, void *fh, void *arg)
1898 struct v4l2_streamparm *p = arg;
1899 int ret = check_fmt(file, p->type);
1901 return ret ? ret : ops->vidioc_s_parm(file, fh, p);
1904 static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,
1905 struct file *file, void *fh, void *arg)
1907 struct video_device *vfd = video_devdata(file);
1908 struct v4l2_queryctrl *p = arg;
1909 struct v4l2_fh *vfh =
1910 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1912 if (vfh && vfh->ctrl_handler)
1913 return v4l2_queryctrl(vfh->ctrl_handler, p);
1914 if (vfd->ctrl_handler)
1915 return v4l2_queryctrl(vfd->ctrl_handler, p);
1916 if (ops->vidioc_queryctrl)
1917 return ops->vidioc_queryctrl(file, fh, p);
1921 static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops,
1922 struct file *file, void *fh, void *arg)
1924 struct video_device *vfd = video_devdata(file);
1925 struct v4l2_query_ext_ctrl *p = arg;
1926 struct v4l2_fh *vfh =
1927 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1929 if (vfh && vfh->ctrl_handler)
1930 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p);
1931 if (vfd->ctrl_handler)
1932 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p);
1933 if (ops->vidioc_query_ext_ctrl)
1934 return ops->vidioc_query_ext_ctrl(file, fh, p);
1938 static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,
1939 struct file *file, void *fh, void *arg)
1941 struct video_device *vfd = video_devdata(file);
1942 struct v4l2_querymenu *p = arg;
1943 struct v4l2_fh *vfh =
1944 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1946 if (vfh && vfh->ctrl_handler)
1947 return v4l2_querymenu(vfh->ctrl_handler, p);
1948 if (vfd->ctrl_handler)
1949 return v4l2_querymenu(vfd->ctrl_handler, p);
1950 if (ops->vidioc_querymenu)
1951 return ops->vidioc_querymenu(file, fh, p);
1955 static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops,
1956 struct file *file, void *fh, void *arg)
1958 struct video_device *vfd = video_devdata(file);
1959 struct v4l2_control *p = arg;
1960 struct v4l2_fh *vfh =
1961 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1962 struct v4l2_ext_controls ctrls;
1963 struct v4l2_ext_control ctrl;
1965 if (vfh && vfh->ctrl_handler)
1966 return v4l2_g_ctrl(vfh->ctrl_handler, p);
1967 if (vfd->ctrl_handler)
1968 return v4l2_g_ctrl(vfd->ctrl_handler, p);
1969 if (ops->vidioc_g_ctrl)
1970 return ops->vidioc_g_ctrl(file, fh, p);
1971 if (ops->vidioc_g_ext_ctrls == NULL)
1974 ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
1976 ctrls.controls = &ctrl;
1978 ctrl.value = p->value;
1979 if (check_ext_ctrls(&ctrls, 1)) {
1980 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
1983 p->value = ctrl.value;
1989 static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,
1990 struct file *file, void *fh, void *arg)
1992 struct video_device *vfd = video_devdata(file);
1993 struct v4l2_control *p = arg;
1994 struct v4l2_fh *vfh =
1995 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1996 struct v4l2_ext_controls ctrls;
1997 struct v4l2_ext_control ctrl;
1999 if (vfh && vfh->ctrl_handler)
2000 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
2001 if (vfd->ctrl_handler)
2002 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
2003 if (ops->vidioc_s_ctrl)
2004 return ops->vidioc_s_ctrl(file, fh, p);
2005 if (ops->vidioc_s_ext_ctrls == NULL)
2008 ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
2010 ctrls.controls = &ctrl;
2012 ctrl.value = p->value;
2013 if (check_ext_ctrls(&ctrls, 1))
2014 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
2018 static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2019 struct file *file, void *fh, void *arg)
2021 struct video_device *vfd = video_devdata(file);
2022 struct v4l2_ext_controls *p = arg;
2023 struct v4l2_fh *vfh =
2024 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2026 p->error_idx = p->count;
2027 if (vfh && vfh->ctrl_handler)
2028 return v4l2_g_ext_ctrls(vfh->ctrl_handler, p);
2029 if (vfd->ctrl_handler)
2030 return v4l2_g_ext_ctrls(vfd->ctrl_handler, p);
2031 if (ops->vidioc_g_ext_ctrls == NULL)
2033 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :
2037 static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2038 struct file *file, void *fh, void *arg)
2040 struct video_device *vfd = video_devdata(file);
2041 struct v4l2_ext_controls *p = arg;
2042 struct v4l2_fh *vfh =
2043 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2045 p->error_idx = p->count;
2046 if (vfh && vfh->ctrl_handler)
2047 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, p);
2048 if (vfd->ctrl_handler)
2049 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, p);
2050 if (ops->vidioc_s_ext_ctrls == NULL)
2052 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :
2056 static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2057 struct file *file, void *fh, void *arg)
2059 struct video_device *vfd = video_devdata(file);
2060 struct v4l2_ext_controls *p = arg;
2061 struct v4l2_fh *vfh =
2062 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2064 p->error_idx = p->count;
2065 if (vfh && vfh->ctrl_handler)
2066 return v4l2_try_ext_ctrls(vfh->ctrl_handler, p);
2067 if (vfd->ctrl_handler)
2068 return v4l2_try_ext_ctrls(vfd->ctrl_handler, p);
2069 if (ops->vidioc_try_ext_ctrls == NULL)
2071 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :
2075 static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
2076 struct file *file, void *fh, void *arg)
2078 struct v4l2_crop *p = arg;
2079 struct v4l2_selection s = {
2084 if (ops->vidioc_g_crop)
2085 return ops->vidioc_g_crop(file, fh, p);
2086 /* simulate capture crop using selection api */
2088 /* crop means compose for output devices */
2089 if (V4L2_TYPE_IS_OUTPUT(p->type))
2090 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
2092 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
2094 ret = ops->vidioc_g_selection(file, fh, &s);
2096 /* copying results to old structure on success */
2102 static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
2103 struct file *file, void *fh, void *arg)
2105 struct v4l2_crop *p = arg;
2106 struct v4l2_selection s = {
2111 if (ops->vidioc_s_crop)
2112 return ops->vidioc_s_crop(file, fh, p);
2113 /* simulate capture crop using selection api */
2115 /* crop means compose for output devices */
2116 if (V4L2_TYPE_IS_OUTPUT(p->type))
2117 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
2119 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
2121 return ops->vidioc_s_selection(file, fh, &s);
2124 static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
2125 struct file *file, void *fh, void *arg)
2127 struct v4l2_cropcap *p = arg;
2129 if (ops->vidioc_g_selection) {
2130 struct v4l2_selection s = { .type = p->type };
2133 /* obtaining bounds */
2134 if (V4L2_TYPE_IS_OUTPUT(p->type))
2135 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
2137 s.target = V4L2_SEL_TGT_CROP_BOUNDS;
2139 ret = ops->vidioc_g_selection(file, fh, &s);
2144 /* obtaining defrect */
2145 if (V4L2_TYPE_IS_OUTPUT(p->type))
2146 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
2148 s.target = V4L2_SEL_TGT_CROP_DEFAULT;
2150 ret = ops->vidioc_g_selection(file, fh, &s);
2156 /* setting trivial pixelaspect */
2157 p->pixelaspect.numerator = 1;
2158 p->pixelaspect.denominator = 1;
2160 if (ops->vidioc_cropcap)
2161 return ops->vidioc_cropcap(file, fh, p);
2166 static int v4l_log_status(const struct v4l2_ioctl_ops *ops,
2167 struct file *file, void *fh, void *arg)
2169 struct video_device *vfd = video_devdata(file);
2173 pr_info("%s: ================= START STATUS =================\n",
2174 vfd->v4l2_dev->name);
2175 ret = ops->vidioc_log_status(file, fh);
2177 pr_info("%s: ================== END STATUS ==================\n",
2178 vfd->v4l2_dev->name);
2182 static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
2183 struct file *file, void *fh, void *arg)
2185 #ifdef CONFIG_VIDEO_ADV_DEBUG
2186 struct v4l2_dbg_register *p = arg;
2187 struct video_device *vfd = video_devdata(file);
2188 struct v4l2_subdev *sd;
2191 if (!capable(CAP_SYS_ADMIN))
2193 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2194 if (vfd->v4l2_dev == NULL)
2196 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2197 if (p->match.addr == idx++)
2198 return v4l2_subdev_call(sd, core, g_register, p);
2201 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2202 (ops->vidioc_g_chip_info || p->match.addr == 0))
2203 return ops->vidioc_g_register(file, fh, p);
2210 static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
2211 struct file *file, void *fh, void *arg)
2213 #ifdef CONFIG_VIDEO_ADV_DEBUG
2214 const struct v4l2_dbg_register *p = arg;
2215 struct video_device *vfd = video_devdata(file);
2216 struct v4l2_subdev *sd;
2219 if (!capable(CAP_SYS_ADMIN))
2221 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2222 if (vfd->v4l2_dev == NULL)
2224 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2225 if (p->match.addr == idx++)
2226 return v4l2_subdev_call(sd, core, s_register, p);
2229 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2230 (ops->vidioc_g_chip_info || p->match.addr == 0))
2231 return ops->vidioc_s_register(file, fh, p);
2238 static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,
2239 struct file *file, void *fh, void *arg)
2241 #ifdef CONFIG_VIDEO_ADV_DEBUG
2242 struct video_device *vfd = video_devdata(file);
2243 struct v4l2_dbg_chip_info *p = arg;
2244 struct v4l2_subdev *sd;
2247 switch (p->match.type) {
2248 case V4L2_CHIP_MATCH_BRIDGE:
2249 if (ops->vidioc_s_register)
2250 p->flags |= V4L2_CHIP_FL_WRITABLE;
2251 if (ops->vidioc_g_register)
2252 p->flags |= V4L2_CHIP_FL_READABLE;
2253 strlcpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));
2254 if (ops->vidioc_g_chip_info)
2255 return ops->vidioc_g_chip_info(file, fh, arg);
2260 case V4L2_CHIP_MATCH_SUBDEV:
2261 if (vfd->v4l2_dev == NULL)
2263 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {
2264 if (p->match.addr != idx++)
2266 if (sd->ops->core && sd->ops->core->s_register)
2267 p->flags |= V4L2_CHIP_FL_WRITABLE;
2268 if (sd->ops->core && sd->ops->core->g_register)
2269 p->flags |= V4L2_CHIP_FL_READABLE;
2270 strlcpy(p->name, sd->name, sizeof(p->name));
2281 static int v4l_dqevent(const struct v4l2_ioctl_ops *ops,
2282 struct file *file, void *fh, void *arg)
2284 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK);
2287 static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,
2288 struct file *file, void *fh, void *arg)
2290 return ops->vidioc_subscribe_event(fh, arg);
2293 static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,
2294 struct file *file, void *fh, void *arg)
2296 return ops->vidioc_unsubscribe_event(fh, arg);
2299 static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,
2300 struct file *file, void *fh, void *arg)
2302 struct v4l2_sliced_vbi_cap *p = arg;
2303 int ret = check_fmt(file, p->type);
2308 /* Clear up to type, everything after type is zeroed already */
2309 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
2311 return ops->vidioc_g_sliced_vbi_cap(file, fh, p);
2314 static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
2315 struct file *file, void *fh, void *arg)
2317 struct video_device *vfd = video_devdata(file);
2318 struct v4l2_frequency_band *p = arg;
2319 enum v4l2_tuner_type type;
2322 if (vfd->vfl_type == VFL_TYPE_SDR) {
2323 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)
2327 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2328 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2329 if (type != p->type)
2332 if (ops->vidioc_enum_freq_bands) {
2333 err = ops->vidioc_enum_freq_bands(file, fh, p);
2337 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) {
2338 struct v4l2_tuner t = {
2345 err = ops->vidioc_g_tuner(file, fh, &t);
2348 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2349 p->rangelow = t.rangelow;
2350 p->rangehigh = t.rangehigh;
2351 p->modulation = (type == V4L2_TUNER_RADIO) ?
2352 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2355 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) {
2356 struct v4l2_modulator m = {
2360 if (type != V4L2_TUNER_RADIO)
2364 err = ops->vidioc_g_modulator(file, fh, &m);
2367 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2368 p->rangelow = m.rangelow;
2369 p->rangehigh = m.rangehigh;
2370 p->modulation = (type == V4L2_TUNER_RADIO) ?
2371 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2377 struct v4l2_ioctl_info {
2380 const char * const name;
2383 int (*func)(const struct v4l2_ioctl_ops *ops,
2384 struct file *file, void *fh, void *p);
2386 void (*debug)(const void *arg, bool write_only);
2389 /* This control needs a priority check */
2390 #define INFO_FL_PRIO (1 << 0)
2391 /* This control can be valid if the filehandle passes a control handler. */
2392 #define INFO_FL_CTRL (1 << 1)
2393 /* This is a standard ioctl, no need for special code */
2394 #define INFO_FL_STD (1 << 2)
2395 /* This is ioctl has its own function */
2396 #define INFO_FL_FUNC (1 << 3)
2398 #define INFO_FL_QUEUE (1 << 4)
2399 /* Zero struct from after the field to the end */
2400 #define INFO_FL_CLEAR(v4l2_struct, field) \
2401 ((offsetof(struct v4l2_struct, field) + \
2402 sizeof(((struct v4l2_struct *)0)->field)) << 16)
2403 #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
2405 #define IOCTL_INFO_STD(_ioctl, _vidioc, _debug, _flags) \
2406 [_IOC_NR(_ioctl)] = { \
2408 .flags = _flags | INFO_FL_STD, \
2410 .u.offset = offsetof(struct v4l2_ioctl_ops, _vidioc), \
2414 #define IOCTL_INFO_FNC(_ioctl, _func, _debug, _flags) \
2415 [_IOC_NR(_ioctl)] = { \
2417 .flags = _flags | INFO_FL_FUNC, \
2423 static struct v4l2_ioctl_info v4l2_ioctls[] = {
2424 IOCTL_INFO_FNC(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
2425 IOCTL_INFO_FNC(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)),
2426 IOCTL_INFO_FNC(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0),
2427 IOCTL_INFO_FNC(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
2428 IOCTL_INFO_FNC(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2429 IOCTL_INFO_FNC(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
2430 IOCTL_INFO_STD(VIDIOC_G_FBUF, vidioc_g_fbuf, v4l_print_framebuffer, 0),
2431 IOCTL_INFO_STD(VIDIOC_S_FBUF, vidioc_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
2432 IOCTL_INFO_FNC(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO),
2433 IOCTL_INFO_FNC(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),
2434 IOCTL_INFO_STD(VIDIOC_EXPBUF, vidioc_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)),
2435 IOCTL_INFO_FNC(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),
2436 IOCTL_INFO_FNC(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2437 IOCTL_INFO_FNC(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2438 IOCTL_INFO_FNC(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
2439 IOCTL_INFO_FNC(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
2440 IOCTL_INFO_STD(VIDIOC_G_STD, vidioc_g_std, v4l_print_std, 0),
2441 IOCTL_INFO_FNC(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
2442 IOCTL_INFO_FNC(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
2443 IOCTL_INFO_FNC(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
2444 IOCTL_INFO_FNC(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
2445 IOCTL_INFO_FNC(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
2446 IOCTL_INFO_FNC(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
2447 IOCTL_INFO_FNC(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
2448 IOCTL_INFO_STD(VIDIOC_G_AUDIO, vidioc_g_audio, v4l_print_audio, 0),
2449 IOCTL_INFO_STD(VIDIOC_S_AUDIO, vidioc_s_audio, v4l_print_audio, INFO_FL_PRIO),
2450 IOCTL_INFO_FNC(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
2451 IOCTL_INFO_FNC(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
2452 IOCTL_INFO_STD(VIDIOC_G_INPUT, vidioc_g_input, v4l_print_u32, 0),
2453 IOCTL_INFO_FNC(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
2454 IOCTL_INFO_STD(VIDIOC_G_EDID, vidioc_g_edid, v4l_print_edid, 0),
2455 IOCTL_INFO_STD(VIDIOC_S_EDID, vidioc_s_edid, v4l_print_edid, INFO_FL_PRIO),
2456 IOCTL_INFO_STD(VIDIOC_G_OUTPUT, vidioc_g_output, v4l_print_u32, 0),
2457 IOCTL_INFO_FNC(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
2458 IOCTL_INFO_FNC(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
2459 IOCTL_INFO_STD(VIDIOC_G_AUDOUT, vidioc_g_audout, v4l_print_audioout, 0),
2460 IOCTL_INFO_STD(VIDIOC_S_AUDOUT, vidioc_s_audout, v4l_print_audioout, INFO_FL_PRIO),
2461 IOCTL_INFO_FNC(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
2462 IOCTL_INFO_FNC(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
2463 IOCTL_INFO_FNC(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
2464 IOCTL_INFO_FNC(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
2465 IOCTL_INFO_FNC(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
2466 IOCTL_INFO_FNC(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
2467 IOCTL_INFO_FNC(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
2468 IOCTL_INFO_STD(VIDIOC_G_SELECTION, vidioc_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)),
2469 IOCTL_INFO_STD(VIDIOC_S_SELECTION, vidioc_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)),
2470 IOCTL_INFO_STD(VIDIOC_G_JPEGCOMP, vidioc_g_jpegcomp, v4l_print_jpegcompression, 0),
2471 IOCTL_INFO_STD(VIDIOC_S_JPEGCOMP, vidioc_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
2472 IOCTL_INFO_FNC(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
2473 IOCTL_INFO_FNC(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
2474 IOCTL_INFO_STD(VIDIOC_ENUMAUDIO, vidioc_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
2475 IOCTL_INFO_STD(VIDIOC_ENUMAUDOUT, vidioc_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
2476 IOCTL_INFO_FNC(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
2477 IOCTL_INFO_FNC(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
2478 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)),
2479 IOCTL_INFO_FNC(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
2480 IOCTL_INFO_FNC(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2481 IOCTL_INFO_FNC(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL),
2482 IOCTL_INFO_FNC(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2483 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMESIZES, vidioc_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
2484 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMEINTERVALS, vidioc_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
2485 IOCTL_INFO_STD(VIDIOC_G_ENC_INDEX, vidioc_g_enc_index, v4l_print_enc_idx, 0),
2486 IOCTL_INFO_STD(VIDIOC_ENCODER_CMD, vidioc_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2487 IOCTL_INFO_STD(VIDIOC_TRY_ENCODER_CMD, vidioc_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2488 IOCTL_INFO_STD(VIDIOC_DECODER_CMD, vidioc_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
2489 IOCTL_INFO_STD(VIDIOC_TRY_DECODER_CMD, vidioc_try_decoder_cmd, v4l_print_decoder_cmd, 0),
2490 IOCTL_INFO_FNC(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
2491 IOCTL_INFO_FNC(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
2492 IOCTL_INFO_FNC(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
2493 IOCTL_INFO_STD(VIDIOC_S_DV_TIMINGS, vidioc_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO),
2494 IOCTL_INFO_STD(VIDIOC_G_DV_TIMINGS, vidioc_g_dv_timings, v4l_print_dv_timings, 0),
2495 IOCTL_INFO_FNC(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
2496 IOCTL_INFO_FNC(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
2497 IOCTL_INFO_FNC(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
2498 IOCTL_INFO_FNC(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2499 IOCTL_INFO_FNC(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
2500 IOCTL_INFO_STD(VIDIOC_ENUM_DV_TIMINGS, vidioc_enum_dv_timings, v4l_print_enum_dv_timings, 0),
2501 IOCTL_INFO_STD(VIDIOC_QUERY_DV_TIMINGS, vidioc_query_dv_timings, v4l_print_dv_timings, 0),
2502 IOCTL_INFO_STD(VIDIOC_DV_TIMINGS_CAP, vidioc_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, type)),
2503 IOCTL_INFO_FNC(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
2504 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)),
2505 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)),
2507 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
2509 bool v4l2_is_known_ioctl(unsigned int cmd)
2511 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2513 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
2516 struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd)
2518 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2520 if (test_bit(_IOC_NR(cmd), vdev->disable_locking))
2522 if (vdev->queue && vdev->queue->lock &&
2523 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
2524 return vdev->queue->lock;
2528 /* Common ioctl debug function. This function can be used by
2529 external ioctl messages as well as internal V4L ioctl */
2530 void v4l_printk_ioctl(const char *prefix, unsigned int cmd)
2532 const char *dir, *type;
2535 printk(KERN_DEBUG "%s: ", prefix);
2537 switch (_IOC_TYPE(cmd)) {
2542 if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
2546 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
2553 switch (_IOC_DIR(cmd)) {
2554 case _IOC_NONE: dir = "--"; break;
2555 case _IOC_READ: dir = "r-"; break;
2556 case _IOC_WRITE: dir = "-w"; break;
2557 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
2558 default: dir = "*ERR*"; break;
2560 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
2561 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
2563 EXPORT_SYMBOL(v4l_printk_ioctl);
2565 static long __video_do_ioctl(struct file *file,
2566 unsigned int cmd, void *arg)
2568 struct video_device *vfd = video_devdata(file);
2569 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
2570 bool write_only = false;
2571 struct v4l2_ioctl_info default_info;
2572 const struct v4l2_ioctl_info *info;
2573 void *fh = file->private_data;
2574 struct v4l2_fh *vfh = NULL;
2575 int dev_debug = vfd->dev_debug;
2579 pr_warn("%s: has no ioctl_ops.\n",
2580 video_device_node_name(vfd));
2584 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
2585 vfh = file->private_data;
2587 if (v4l2_is_known_ioctl(cmd)) {
2588 info = &v4l2_ioctls[_IOC_NR(cmd)];
2590 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) &&
2591 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
2594 if (vfh && (info->flags & INFO_FL_PRIO)) {
2595 ret = v4l2_prio_check(vfd->prio, vfh->prio);
2600 default_info.ioctl = cmd;
2601 default_info.flags = 0;
2602 default_info.debug = v4l_print_default;
2603 info = &default_info;
2606 write_only = _IOC_DIR(cmd) == _IOC_WRITE;
2607 if (info->flags & INFO_FL_STD) {
2608 typedef int (*vidioc_op)(struct file *file, void *fh, void *p);
2609 const void *p = vfd->ioctl_ops;
2610 const vidioc_op *vidioc = p + info->u.offset;
2612 ret = (*vidioc)(file, fh, arg);
2613 } else if (info->flags & INFO_FL_FUNC) {
2614 ret = info->u.func(ops, file, fh, arg);
2615 } else if (!ops->vidioc_default) {
2618 ret = ops->vidioc_default(file, fh,
2619 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
2624 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) {
2625 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) &&
2626 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF))
2629 v4l_printk_ioctl(video_device_node_name(vfd), cmd);
2631 pr_cont(": error %ld", ret);
2632 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG))
2634 else if (_IOC_DIR(cmd) == _IOC_NONE)
2635 info->debug(arg, write_only);
2638 info->debug(arg, write_only);
2645 static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
2646 void __user **user_ptr, void ***kernel_ptr)
2651 case VIDIOC_PREPARE_BUF:
2652 case VIDIOC_QUERYBUF:
2654 case VIDIOC_DQBUF: {
2655 struct v4l2_buffer *buf = parg;
2657 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
2658 if (buf->length > VIDEO_MAX_PLANES) {
2662 *user_ptr = (void __user *)buf->m.planes;
2663 *kernel_ptr = (void **)&buf->m.planes;
2664 *array_size = sizeof(struct v4l2_plane) * buf->length;
2671 case VIDIOC_S_EDID: {
2672 struct v4l2_edid *edid = parg;
2675 if (edid->blocks > 256) {
2679 *user_ptr = (void __user *)edid->edid;
2680 *kernel_ptr = (void **)&edid->edid;
2681 *array_size = edid->blocks * 128;
2687 case VIDIOC_S_EXT_CTRLS:
2688 case VIDIOC_G_EXT_CTRLS:
2689 case VIDIOC_TRY_EXT_CTRLS: {
2690 struct v4l2_ext_controls *ctrls = parg;
2692 if (ctrls->count != 0) {
2693 if (ctrls->count > V4L2_CID_MAX_CTRLS) {
2697 *user_ptr = (void __user *)ctrls->controls;
2698 *kernel_ptr = (void **)&ctrls->controls;
2699 *array_size = sizeof(struct v4l2_ext_control)
2711 video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
2716 void *parg = (void *)arg;
2718 bool has_array_args;
2719 size_t array_size = 0;
2720 void __user *user_ptr = NULL;
2721 void **kernel_ptr = NULL;
2723 /* Copy arguments into temp kernel buffer */
2724 if (_IOC_DIR(cmd) != _IOC_NONE) {
2725 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
2728 /* too big to allocate from stack */
2729 mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
2736 if (_IOC_DIR(cmd) & _IOC_WRITE) {
2737 unsigned int n = _IOC_SIZE(cmd);
2740 * In some cases, only a few fields are used as input,
2741 * i.e. when the app sets "index" and then the driver
2742 * fills in the rest of the structure for the thing
2743 * with that index. We only need to copy up the first
2746 if (v4l2_is_known_ioctl(cmd)) {
2747 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags;
2748 if (flags & INFO_FL_CLEAR_MASK)
2749 n = (flags & INFO_FL_CLEAR_MASK) >> 16;
2752 if (copy_from_user(parg, (void __user *)arg, n))
2755 /* zero out anything we don't copy from userspace */
2756 if (n < _IOC_SIZE(cmd))
2757 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n);
2759 /* read-only ioctl */
2760 memset(parg, 0, _IOC_SIZE(cmd));
2764 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
2767 has_array_args = err;
2769 if (has_array_args) {
2771 * When adding new types of array args, make sure that the
2772 * parent argument to ioctl (which contains the pointer to the
2773 * array) fits into sbuf (so that mbuf will still remain
2774 * unused up to here).
2776 mbuf = kmalloc(array_size, GFP_KERNEL);
2779 goto out_array_args;
2781 if (copy_from_user(mbuf, user_ptr, array_size))
2782 goto out_array_args;
2787 err = func(file, cmd, parg);
2788 if (err == -ENOIOCTLCMD)
2791 if (cmd == VIDIOC_DQBUF)
2792 trace_v4l2_dqbuf(video_devdata(file)->minor, parg);
2793 else if (cmd == VIDIOC_QBUF)
2794 trace_v4l2_qbuf(video_devdata(file)->minor, parg);
2797 if (has_array_args) {
2798 *kernel_ptr = (void __force *)user_ptr;
2799 if (copy_to_user(user_ptr, mbuf, array_size))
2801 goto out_array_args;
2803 /* VIDIOC_QUERY_DV_TIMINGS can return an error, but still have valid
2804 results that must be returned. */
2805 if (err < 0 && cmd != VIDIOC_QUERY_DV_TIMINGS)
2809 /* Copy results into user buffer */
2810 switch (_IOC_DIR(cmd)) {
2812 case (_IOC_WRITE | _IOC_READ):
2813 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
2822 EXPORT_SYMBOL(video_usercopy);
2824 long video_ioctl2(struct file *file,
2825 unsigned int cmd, unsigned long arg)
2827 return video_usercopy(file, cmd, arg, __video_do_ioctl);
2829 EXPORT_SYMBOL(video_ioctl2);