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Merge tag 'v4.1-rc3' into patchwork
[deliverable/linux.git] / drivers / media / v4l2-core / v4l2-ioctl.c
1 /*
2 * Video capture interface for Linux version 2
3 *
4 * A generic framework to process V4L2 ioctl commands.
5 *
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.
10 *
11 * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1)
12 * Mauro Carvalho Chehab <mchehab@infradead.org> (version 2)
13 */
14
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>
20
21 #include <linux/videodev2.h>
22
23 #include <media/v4l2-common.h>
24 #include <media/v4l2-ioctl.h>
25 #include <media/v4l2-ctrls.h>
26 #include <media/v4l2-fh.h>
27 #include <media/v4l2-event.h>
28 #include <media/v4l2-device.h>
29 #include <media/videobuf2-core.h>
30
31 #define CREATE_TRACE_POINTS
32 #include <trace/events/v4l2.h>
33
34 /* Zero out the end of the struct pointed to by p. Everything after, but
35 * not including, the specified field is cleared. */
36 #define CLEAR_AFTER_FIELD(p, field) \
37 memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \
38 0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field))
39
40 #define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls)
41
42 struct std_descr {
43 v4l2_std_id std;
44 const char *descr;
45 };
46
47 static const struct std_descr standards[] = {
48 { V4L2_STD_NTSC, "NTSC" },
49 { V4L2_STD_NTSC_M, "NTSC-M" },
50 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" },
51 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" },
52 { V4L2_STD_NTSC_443, "NTSC-443" },
53 { V4L2_STD_PAL, "PAL" },
54 { V4L2_STD_PAL_BG, "PAL-BG" },
55 { V4L2_STD_PAL_B, "PAL-B" },
56 { V4L2_STD_PAL_B1, "PAL-B1" },
57 { V4L2_STD_PAL_G, "PAL-G" },
58 { V4L2_STD_PAL_H, "PAL-H" },
59 { V4L2_STD_PAL_I, "PAL-I" },
60 { V4L2_STD_PAL_DK, "PAL-DK" },
61 { V4L2_STD_PAL_D, "PAL-D" },
62 { V4L2_STD_PAL_D1, "PAL-D1" },
63 { V4L2_STD_PAL_K, "PAL-K" },
64 { V4L2_STD_PAL_M, "PAL-M" },
65 { V4L2_STD_PAL_N, "PAL-N" },
66 { V4L2_STD_PAL_Nc, "PAL-Nc" },
67 { V4L2_STD_PAL_60, "PAL-60" },
68 { V4L2_STD_SECAM, "SECAM" },
69 { V4L2_STD_SECAM_B, "SECAM-B" },
70 { V4L2_STD_SECAM_G, "SECAM-G" },
71 { V4L2_STD_SECAM_H, "SECAM-H" },
72 { V4L2_STD_SECAM_DK, "SECAM-DK" },
73 { V4L2_STD_SECAM_D, "SECAM-D" },
74 { V4L2_STD_SECAM_K, "SECAM-K" },
75 { V4L2_STD_SECAM_K1, "SECAM-K1" },
76 { V4L2_STD_SECAM_L, "SECAM-L" },
77 { V4L2_STD_SECAM_LC, "SECAM-Lc" },
78 { 0, "Unknown" }
79 };
80
81 /* video4linux standard ID conversion to standard name
82 */
83 const char *v4l2_norm_to_name(v4l2_std_id id)
84 {
85 u32 myid = id;
86 int i;
87
88 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
89 64 bit comparations. So, on that architecture, with some gcc
90 variants, compilation fails. Currently, the max value is 30bit wide.
91 */
92 BUG_ON(myid != id);
93
94 for (i = 0; standards[i].std; i++)
95 if (myid == standards[i].std)
96 break;
97 return standards[i].descr;
98 }
99 EXPORT_SYMBOL(v4l2_norm_to_name);
100
101 /* Returns frame period for the given standard */
102 void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod)
103 {
104 if (id & V4L2_STD_525_60) {
105 frameperiod->numerator = 1001;
106 frameperiod->denominator = 30000;
107 } else {
108 frameperiod->numerator = 1;
109 frameperiod->denominator = 25;
110 }
111 }
112 EXPORT_SYMBOL(v4l2_video_std_frame_period);
113
114 /* Fill in the fields of a v4l2_standard structure according to the
115 'id' and 'transmission' parameters. Returns negative on error. */
116 int v4l2_video_std_construct(struct v4l2_standard *vs,
117 int id, const char *name)
118 {
119 vs->id = id;
120 v4l2_video_std_frame_period(id, &vs->frameperiod);
121 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625;
122 strlcpy(vs->name, name, sizeof(vs->name));
123 return 0;
124 }
125 EXPORT_SYMBOL(v4l2_video_std_construct);
126
127 /* ----------------------------------------------------------------- */
128 /* some arrays for pretty-printing debug messages of enum types */
129
130 const char *v4l2_field_names[] = {
131 [V4L2_FIELD_ANY] = "any",
132 [V4L2_FIELD_NONE] = "none",
133 [V4L2_FIELD_TOP] = "top",
134 [V4L2_FIELD_BOTTOM] = "bottom",
135 [V4L2_FIELD_INTERLACED] = "interlaced",
136 [V4L2_FIELD_SEQ_TB] = "seq-tb",
137 [V4L2_FIELD_SEQ_BT] = "seq-bt",
138 [V4L2_FIELD_ALTERNATE] = "alternate",
139 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",
140 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",
141 };
142 EXPORT_SYMBOL(v4l2_field_names);
143
144 const char *v4l2_type_names[] = {
145 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap",
146 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay",
147 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out",
148 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap",
149 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out",
150 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",
151 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out",
152 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay",
153 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane",
154 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane",
155 [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap",
156 };
157 EXPORT_SYMBOL(v4l2_type_names);
158
159 static const char *v4l2_memory_names[] = {
160 [V4L2_MEMORY_MMAP] = "mmap",
161 [V4L2_MEMORY_USERPTR] = "userptr",
162 [V4L2_MEMORY_OVERLAY] = "overlay",
163 [V4L2_MEMORY_DMABUF] = "dmabuf",
164 };
165
166 #define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown")
167
168 /* ------------------------------------------------------------------ */
169 /* debug help functions */
170
171 static void v4l_print_querycap(const void *arg, bool write_only)
172 {
173 const struct v4l2_capability *p = arg;
174
175 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, "
176 "capabilities=0x%08x, device_caps=0x%08x\n",
177 (int)sizeof(p->driver), p->driver,
178 (int)sizeof(p->card), p->card,
179 (int)sizeof(p->bus_info), p->bus_info,
180 p->version, p->capabilities, p->device_caps);
181 }
182
183 static void v4l_print_enuminput(const void *arg, bool write_only)
184 {
185 const struct v4l2_input *p = arg;
186
187 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, "
188 "std=0x%08Lx, status=0x%x, capabilities=0x%x\n",
189 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
190 p->tuner, (unsigned long long)p->std, p->status,
191 p->capabilities);
192 }
193
194 static void v4l_print_enumoutput(const void *arg, bool write_only)
195 {
196 const struct v4l2_output *p = arg;
197
198 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, "
199 "modulator=%u, std=0x%08Lx, capabilities=0x%x\n",
200 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
201 p->modulator, (unsigned long long)p->std, p->capabilities);
202 }
203
204 static void v4l_print_audio(const void *arg, bool write_only)
205 {
206 const struct v4l2_audio *p = arg;
207
208 if (write_only)
209 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode);
210 else
211 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
212 p->index, (int)sizeof(p->name), p->name,
213 p->capability, p->mode);
214 }
215
216 static void v4l_print_audioout(const void *arg, bool write_only)
217 {
218 const struct v4l2_audioout *p = arg;
219
220 if (write_only)
221 pr_cont("index=%u\n", p->index);
222 else
223 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
224 p->index, (int)sizeof(p->name), p->name,
225 p->capability, p->mode);
226 }
227
228 static void v4l_print_fmtdesc(const void *arg, bool write_only)
229 {
230 const struct v4l2_fmtdesc *p = arg;
231
232 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%c%c%c%c, description='%.*s'\n",
233 p->index, prt_names(p->type, v4l2_type_names),
234 p->flags, (p->pixelformat & 0xff),
235 (p->pixelformat >> 8) & 0xff,
236 (p->pixelformat >> 16) & 0xff,
237 (p->pixelformat >> 24) & 0xff,
238 (int)sizeof(p->description), p->description);
239 }
240
241 static void v4l_print_format(const void *arg, bool write_only)
242 {
243 const struct v4l2_format *p = arg;
244 const struct v4l2_pix_format *pix;
245 const struct v4l2_pix_format_mplane *mp;
246 const struct v4l2_vbi_format *vbi;
247 const struct v4l2_sliced_vbi_format *sliced;
248 const struct v4l2_window *win;
249 const struct v4l2_sdr_format *sdr;
250 unsigned i;
251
252 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
253 switch (p->type) {
254 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
255 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
256 pix = &p->fmt.pix;
257 pr_cont(", width=%u, height=%u, "
258 "pixelformat=%c%c%c%c, field=%s, "
259 "bytesperline=%u, sizeimage=%u, colorspace=%d, "
260 "flags=0x%x, ycbcr_enc=%u, quantization=%u\n",
261 pix->width, pix->height,
262 (pix->pixelformat & 0xff),
263 (pix->pixelformat >> 8) & 0xff,
264 (pix->pixelformat >> 16) & 0xff,
265 (pix->pixelformat >> 24) & 0xff,
266 prt_names(pix->field, v4l2_field_names),
267 pix->bytesperline, pix->sizeimage,
268 pix->colorspace, pix->flags, pix->ycbcr_enc,
269 pix->quantization);
270 break;
271 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
272 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
273 mp = &p->fmt.pix_mp;
274 pr_cont(", width=%u, height=%u, "
275 "format=%c%c%c%c, field=%s, "
276 "colorspace=%d, num_planes=%u, flags=0x%x, "
277 "ycbcr_enc=%u, quantization=%u\n",
278 mp->width, mp->height,
279 (mp->pixelformat & 0xff),
280 (mp->pixelformat >> 8) & 0xff,
281 (mp->pixelformat >> 16) & 0xff,
282 (mp->pixelformat >> 24) & 0xff,
283 prt_names(mp->field, v4l2_field_names),
284 mp->colorspace, mp->num_planes, mp->flags,
285 mp->ycbcr_enc, mp->quantization);
286 for (i = 0; i < mp->num_planes; i++)
287 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i,
288 mp->plane_fmt[i].bytesperline,
289 mp->plane_fmt[i].sizeimage);
290 break;
291 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
292 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
293 win = &p->fmt.win;
294 /* Note: we can't print the clip list here since the clips
295 * pointer is a userspace pointer, not a kernelspace
296 * pointer. */
297 pr_cont(", wxh=%dx%d, x,y=%d,%d, field=%s, chromakey=0x%08x, clipcount=%u, clips=%p, bitmap=%p, global_alpha=0x%02x\n",
298 win->w.width, win->w.height, win->w.left, win->w.top,
299 prt_names(win->field, v4l2_field_names),
300 win->chromakey, win->clipcount, win->clips,
301 win->bitmap, win->global_alpha);
302 break;
303 case V4L2_BUF_TYPE_VBI_CAPTURE:
304 case V4L2_BUF_TYPE_VBI_OUTPUT:
305 vbi = &p->fmt.vbi;
306 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, "
307 "sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n",
308 vbi->sampling_rate, vbi->offset,
309 vbi->samples_per_line,
310 (vbi->sample_format & 0xff),
311 (vbi->sample_format >> 8) & 0xff,
312 (vbi->sample_format >> 16) & 0xff,
313 (vbi->sample_format >> 24) & 0xff,
314 vbi->start[0], vbi->start[1],
315 vbi->count[0], vbi->count[1]);
316 break;
317 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
318 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
319 sliced = &p->fmt.sliced;
320 pr_cont(", service_set=0x%08x, io_size=%d\n",
321 sliced->service_set, sliced->io_size);
322 for (i = 0; i < 24; i++)
323 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
324 sliced->service_lines[0][i],
325 sliced->service_lines[1][i]);
326 break;
327 case V4L2_BUF_TYPE_SDR_CAPTURE:
328 sdr = &p->fmt.sdr;
329 pr_cont(", pixelformat=%c%c%c%c\n",
330 (sdr->pixelformat >> 0) & 0xff,
331 (sdr->pixelformat >> 8) & 0xff,
332 (sdr->pixelformat >> 16) & 0xff,
333 (sdr->pixelformat >> 24) & 0xff);
334 break;
335 }
336 }
337
338 static void v4l_print_framebuffer(const void *arg, bool write_only)
339 {
340 const struct v4l2_framebuffer *p = arg;
341
342 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, "
343 "height=%u, pixelformat=%c%c%c%c, "
344 "bytesperline=%u, sizeimage=%u, colorspace=%d\n",
345 p->capability, p->flags, p->base,
346 p->fmt.width, p->fmt.height,
347 (p->fmt.pixelformat & 0xff),
348 (p->fmt.pixelformat >> 8) & 0xff,
349 (p->fmt.pixelformat >> 16) & 0xff,
350 (p->fmt.pixelformat >> 24) & 0xff,
351 p->fmt.bytesperline, p->fmt.sizeimage,
352 p->fmt.colorspace);
353 }
354
355 static void v4l_print_buftype(const void *arg, bool write_only)
356 {
357 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names));
358 }
359
360 static void v4l_print_modulator(const void *arg, bool write_only)
361 {
362 const struct v4l2_modulator *p = arg;
363
364 if (write_only)
365 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans);
366 else
367 pr_cont("index=%u, name=%.*s, capability=0x%x, "
368 "rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
369 p->index, (int)sizeof(p->name), p->name, p->capability,
370 p->rangelow, p->rangehigh, p->txsubchans);
371 }
372
373 static void v4l_print_tuner(const void *arg, bool write_only)
374 {
375 const struct v4l2_tuner *p = arg;
376
377 if (write_only)
378 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode);
379 else
380 pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, "
381 "rangelow=%u, rangehigh=%u, signal=%u, afc=%d, "
382 "rxsubchans=0x%x, audmode=%u\n",
383 p->index, (int)sizeof(p->name), p->name, p->type,
384 p->capability, p->rangelow,
385 p->rangehigh, p->signal, p->afc,
386 p->rxsubchans, p->audmode);
387 }
388
389 static void v4l_print_frequency(const void *arg, bool write_only)
390 {
391 const struct v4l2_frequency *p = arg;
392
393 pr_cont("tuner=%u, type=%u, frequency=%u\n",
394 p->tuner, p->type, p->frequency);
395 }
396
397 static void v4l_print_standard(const void *arg, bool write_only)
398 {
399 const struct v4l2_standard *p = arg;
400
401 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, "
402 "framelines=%u\n", p->index,
403 (unsigned long long)p->id, (int)sizeof(p->name), p->name,
404 p->frameperiod.numerator,
405 p->frameperiod.denominator,
406 p->framelines);
407 }
408
409 static void v4l_print_std(const void *arg, bool write_only)
410 {
411 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg);
412 }
413
414 static void v4l_print_hw_freq_seek(const void *arg, bool write_only)
415 {
416 const struct v4l2_hw_freq_seek *p = arg;
417
418 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, "
419 "rangelow=%u, rangehigh=%u\n",
420 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing,
421 p->rangelow, p->rangehigh);
422 }
423
424 static void v4l_print_requestbuffers(const void *arg, bool write_only)
425 {
426 const struct v4l2_requestbuffers *p = arg;
427
428 pr_cont("count=%d, type=%s, memory=%s\n",
429 p->count,
430 prt_names(p->type, v4l2_type_names),
431 prt_names(p->memory, v4l2_memory_names));
432 }
433
434 static void v4l_print_buffer(const void *arg, bool write_only)
435 {
436 const struct v4l2_buffer *p = arg;
437 const struct v4l2_timecode *tc = &p->timecode;
438 const struct v4l2_plane *plane;
439 int i;
440
441 pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, "
442 "flags=0x%08x, field=%s, sequence=%d, memory=%s",
443 p->timestamp.tv_sec / 3600,
444 (int)(p->timestamp.tv_sec / 60) % 60,
445 (int)(p->timestamp.tv_sec % 60),
446 (long)p->timestamp.tv_usec,
447 p->index,
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));
451
452 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
453 pr_cont("\n");
454 for (i = 0; i < p->length; ++i) {
455 plane = &p->m.planes[i];
456 printk(KERN_DEBUG
457 "plane %d: bytesused=%d, data_offset=0x%08x, "
458 "offset/userptr=0x%lx, length=%d\n",
459 i, plane->bytesused, plane->data_offset,
460 plane->m.userptr, plane->length);
461 }
462 } else {
463 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n",
464 p->bytesused, p->m.userptr, p->length);
465 }
466
467 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, "
468 "flags=0x%08x, frames=%d, userbits=0x%08x\n",
469 tc->hours, tc->minutes, tc->seconds,
470 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
471 }
472
473 static void v4l_print_exportbuffer(const void *arg, bool write_only)
474 {
475 const struct v4l2_exportbuffer *p = arg;
476
477 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n",
478 p->fd, prt_names(p->type, v4l2_type_names),
479 p->index, p->plane, p->flags);
480 }
481
482 static void v4l_print_create_buffers(const void *arg, bool write_only)
483 {
484 const struct v4l2_create_buffers *p = arg;
485
486 pr_cont("index=%d, count=%d, memory=%s, ",
487 p->index, p->count,
488 prt_names(p->memory, v4l2_memory_names));
489 v4l_print_format(&p->format, write_only);
490 }
491
492 static void v4l_print_streamparm(const void *arg, bool write_only)
493 {
494 const struct v4l2_streamparm *p = arg;
495
496 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
497
498 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
499 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
500 const struct v4l2_captureparm *c = &p->parm.capture;
501
502 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, "
503 "extendedmode=%d, readbuffers=%d\n",
504 c->capability, c->capturemode,
505 c->timeperframe.numerator, c->timeperframe.denominator,
506 c->extendedmode, c->readbuffers);
507 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
508 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
509 const struct v4l2_outputparm *c = &p->parm.output;
510
511 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, "
512 "extendedmode=%d, writebuffers=%d\n",
513 c->capability, c->outputmode,
514 c->timeperframe.numerator, c->timeperframe.denominator,
515 c->extendedmode, c->writebuffers);
516 } else {
517 pr_cont("\n");
518 }
519 }
520
521 static void v4l_print_queryctrl(const void *arg, bool write_only)
522 {
523 const struct v4l2_queryctrl *p = arg;
524
525 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, "
526 "step=%d, default=%d, flags=0x%08x\n",
527 p->id, p->type, (int)sizeof(p->name), p->name,
528 p->minimum, p->maximum,
529 p->step, p->default_value, p->flags);
530 }
531
532 static void v4l_print_query_ext_ctrl(const void *arg, bool write_only)
533 {
534 const struct v4l2_query_ext_ctrl *p = arg;
535
536 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%lld/%lld, "
537 "step=%lld, default=%lld, flags=0x%08x, elem_size=%u, elems=%u, "
538 "nr_of_dims=%u, dims=%u,%u,%u,%u\n",
539 p->id, p->type, (int)sizeof(p->name), p->name,
540 p->minimum, p->maximum,
541 p->step, p->default_value, p->flags,
542 p->elem_size, p->elems, p->nr_of_dims,
543 p->dims[0], p->dims[1], p->dims[2], p->dims[3]);
544 }
545
546 static void v4l_print_querymenu(const void *arg, bool write_only)
547 {
548 const struct v4l2_querymenu *p = arg;
549
550 pr_cont("id=0x%x, index=%d\n", p->id, p->index);
551 }
552
553 static void v4l_print_control(const void *arg, bool write_only)
554 {
555 const struct v4l2_control *p = arg;
556
557 pr_cont("id=0x%x, value=%d\n", p->id, p->value);
558 }
559
560 static void v4l_print_ext_controls(const void *arg, bool write_only)
561 {
562 const struct v4l2_ext_controls *p = arg;
563 int i;
564
565 pr_cont("class=0x%x, count=%d, error_idx=%d",
566 p->ctrl_class, p->count, p->error_idx);
567 for (i = 0; i < p->count; i++) {
568 if (!p->controls[i].size)
569 pr_cont(", id/val=0x%x/0x%x",
570 p->controls[i].id, p->controls[i].value);
571 else
572 pr_cont(", id/size=0x%x/%u",
573 p->controls[i].id, p->controls[i].size);
574 }
575 pr_cont("\n");
576 }
577
578 static void v4l_print_cropcap(const void *arg, bool write_only)
579 {
580 const struct v4l2_cropcap *p = arg;
581
582 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, "
583 "defrect wxh=%dx%d, x,y=%d,%d, "
584 "pixelaspect %d/%d\n",
585 prt_names(p->type, v4l2_type_names),
586 p->bounds.width, p->bounds.height,
587 p->bounds.left, p->bounds.top,
588 p->defrect.width, p->defrect.height,
589 p->defrect.left, p->defrect.top,
590 p->pixelaspect.numerator, p->pixelaspect.denominator);
591 }
592
593 static void v4l_print_crop(const void *arg, bool write_only)
594 {
595 const struct v4l2_crop *p = arg;
596
597 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n",
598 prt_names(p->type, v4l2_type_names),
599 p->c.width, p->c.height,
600 p->c.left, p->c.top);
601 }
602
603 static void v4l_print_selection(const void *arg, bool write_only)
604 {
605 const struct v4l2_selection *p = arg;
606
607 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n",
608 prt_names(p->type, v4l2_type_names),
609 p->target, p->flags,
610 p->r.width, p->r.height, p->r.left, p->r.top);
611 }
612
613 static void v4l_print_jpegcompression(const void *arg, bool write_only)
614 {
615 const struct v4l2_jpegcompression *p = arg;
616
617 pr_cont("quality=%d, APPn=%d, APP_len=%d, "
618 "COM_len=%d, jpeg_markers=0x%x\n",
619 p->quality, p->APPn, p->APP_len,
620 p->COM_len, p->jpeg_markers);
621 }
622
623 static void v4l_print_enc_idx(const void *arg, bool write_only)
624 {
625 const struct v4l2_enc_idx *p = arg;
626
627 pr_cont("entries=%d, entries_cap=%d\n",
628 p->entries, p->entries_cap);
629 }
630
631 static void v4l_print_encoder_cmd(const void *arg, bool write_only)
632 {
633 const struct v4l2_encoder_cmd *p = arg;
634
635 pr_cont("cmd=%d, flags=0x%x\n",
636 p->cmd, p->flags);
637 }
638
639 static void v4l_print_decoder_cmd(const void *arg, bool write_only)
640 {
641 const struct v4l2_decoder_cmd *p = arg;
642
643 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags);
644
645 if (p->cmd == V4L2_DEC_CMD_START)
646 pr_info("speed=%d, format=%u\n",
647 p->start.speed, p->start.format);
648 else if (p->cmd == V4L2_DEC_CMD_STOP)
649 pr_info("pts=%llu\n", p->stop.pts);
650 }
651
652 static void v4l_print_dbg_chip_info(const void *arg, bool write_only)
653 {
654 const struct v4l2_dbg_chip_info *p = arg;
655
656 pr_cont("type=%u, ", p->match.type);
657 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
658 pr_cont("name=%.*s, ",
659 (int)sizeof(p->match.name), p->match.name);
660 else
661 pr_cont("addr=%u, ", p->match.addr);
662 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name);
663 }
664
665 static void v4l_print_dbg_register(const void *arg, bool write_only)
666 {
667 const struct v4l2_dbg_register *p = arg;
668
669 pr_cont("type=%u, ", p->match.type);
670 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
671 pr_cont("name=%.*s, ",
672 (int)sizeof(p->match.name), p->match.name);
673 else
674 pr_cont("addr=%u, ", p->match.addr);
675 pr_cont("reg=0x%llx, val=0x%llx\n",
676 p->reg, p->val);
677 }
678
679 static void v4l_print_dv_timings(const void *arg, bool write_only)
680 {
681 const struct v4l2_dv_timings *p = arg;
682
683 switch (p->type) {
684 case V4L2_DV_BT_656_1120:
685 pr_cont("type=bt-656/1120, interlaced=%u, "
686 "pixelclock=%llu, "
687 "width=%u, height=%u, polarities=0x%x, "
688 "hfrontporch=%u, hsync=%u, "
689 "hbackporch=%u, vfrontporch=%u, "
690 "vsync=%u, vbackporch=%u, "
691 "il_vfrontporch=%u, il_vsync=%u, "
692 "il_vbackporch=%u, standards=0x%x, flags=0x%x\n",
693 p->bt.interlaced, p->bt.pixelclock,
694 p->bt.width, p->bt.height,
695 p->bt.polarities, p->bt.hfrontporch,
696 p->bt.hsync, p->bt.hbackporch,
697 p->bt.vfrontporch, p->bt.vsync,
698 p->bt.vbackporch, p->bt.il_vfrontporch,
699 p->bt.il_vsync, p->bt.il_vbackporch,
700 p->bt.standards, p->bt.flags);
701 break;
702 default:
703 pr_cont("type=%d\n", p->type);
704 break;
705 }
706 }
707
708 static void v4l_print_enum_dv_timings(const void *arg, bool write_only)
709 {
710 const struct v4l2_enum_dv_timings *p = arg;
711
712 pr_cont("index=%u, ", p->index);
713 v4l_print_dv_timings(&p->timings, write_only);
714 }
715
716 static void v4l_print_dv_timings_cap(const void *arg, bool write_only)
717 {
718 const struct v4l2_dv_timings_cap *p = arg;
719
720 switch (p->type) {
721 case V4L2_DV_BT_656_1120:
722 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, "
723 "pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
724 p->bt.min_width, p->bt.max_width,
725 p->bt.min_height, p->bt.max_height,
726 p->bt.min_pixelclock, p->bt.max_pixelclock,
727 p->bt.standards, p->bt.capabilities);
728 break;
729 default:
730 pr_cont("type=%u\n", p->type);
731 break;
732 }
733 }
734
735 static void v4l_print_frmsizeenum(const void *arg, bool write_only)
736 {
737 const struct v4l2_frmsizeenum *p = arg;
738
739 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u",
740 p->index,
741 (p->pixel_format & 0xff),
742 (p->pixel_format >> 8) & 0xff,
743 (p->pixel_format >> 16) & 0xff,
744 (p->pixel_format >> 24) & 0xff,
745 p->type);
746 switch (p->type) {
747 case V4L2_FRMSIZE_TYPE_DISCRETE:
748 pr_cont(", wxh=%ux%u\n",
749 p->discrete.width, p->discrete.height);
750 break;
751 case V4L2_FRMSIZE_TYPE_STEPWISE:
752 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n",
753 p->stepwise.min_width, p->stepwise.min_height,
754 p->stepwise.step_width, p->stepwise.step_height,
755 p->stepwise.max_width, p->stepwise.max_height);
756 break;
757 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
758 /* fall through */
759 default:
760 pr_cont("\n");
761 break;
762 }
763 }
764
765 static void v4l_print_frmivalenum(const void *arg, bool write_only)
766 {
767 const struct v4l2_frmivalenum *p = arg;
768
769 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u",
770 p->index,
771 (p->pixel_format & 0xff),
772 (p->pixel_format >> 8) & 0xff,
773 (p->pixel_format >> 16) & 0xff,
774 (p->pixel_format >> 24) & 0xff,
775 p->width, p->height, p->type);
776 switch (p->type) {
777 case V4L2_FRMIVAL_TYPE_DISCRETE:
778 pr_cont(", fps=%d/%d\n",
779 p->discrete.numerator,
780 p->discrete.denominator);
781 break;
782 case V4L2_FRMIVAL_TYPE_STEPWISE:
783 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n",
784 p->stepwise.min.numerator,
785 p->stepwise.min.denominator,
786 p->stepwise.max.numerator,
787 p->stepwise.max.denominator,
788 p->stepwise.step.numerator,
789 p->stepwise.step.denominator);
790 break;
791 case V4L2_FRMIVAL_TYPE_CONTINUOUS:
792 /* fall through */
793 default:
794 pr_cont("\n");
795 break;
796 }
797 }
798
799 static void v4l_print_event(const void *arg, bool write_only)
800 {
801 const struct v4l2_event *p = arg;
802 const struct v4l2_event_ctrl *c;
803
804 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, "
805 "timestamp=%lu.%9.9lu\n",
806 p->type, p->pending, p->sequence, p->id,
807 p->timestamp.tv_sec, p->timestamp.tv_nsec);
808 switch (p->type) {
809 case V4L2_EVENT_VSYNC:
810 printk(KERN_DEBUG "field=%s\n",
811 prt_names(p->u.vsync.field, v4l2_field_names));
812 break;
813 case V4L2_EVENT_CTRL:
814 c = &p->u.ctrl;
815 printk(KERN_DEBUG "changes=0x%x, type=%u, ",
816 c->changes, c->type);
817 if (c->type == V4L2_CTRL_TYPE_INTEGER64)
818 pr_cont("value64=%lld, ", c->value64);
819 else
820 pr_cont("value=%d, ", c->value);
821 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, "
822 "default_value=%d\n",
823 c->flags, c->minimum, c->maximum,
824 c->step, c->default_value);
825 break;
826 case V4L2_EVENT_FRAME_SYNC:
827 pr_cont("frame_sequence=%u\n",
828 p->u.frame_sync.frame_sequence);
829 break;
830 }
831 }
832
833 static void v4l_print_event_subscription(const void *arg, bool write_only)
834 {
835 const struct v4l2_event_subscription *p = arg;
836
837 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
838 p->type, p->id, p->flags);
839 }
840
841 static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only)
842 {
843 const struct v4l2_sliced_vbi_cap *p = arg;
844 int i;
845
846 pr_cont("type=%s, service_set=0x%08x\n",
847 prt_names(p->type, v4l2_type_names), p->service_set);
848 for (i = 0; i < 24; i++)
849 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
850 p->service_lines[0][i],
851 p->service_lines[1][i]);
852 }
853
854 static void v4l_print_freq_band(const void *arg, bool write_only)
855 {
856 const struct v4l2_frequency_band *p = arg;
857
858 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, "
859 "rangelow=%u, rangehigh=%u, modulation=0x%x\n",
860 p->tuner, p->type, p->index,
861 p->capability, p->rangelow,
862 p->rangehigh, p->modulation);
863 }
864
865 static void v4l_print_edid(const void *arg, bool write_only)
866 {
867 const struct v4l2_edid *p = arg;
868
869 pr_cont("pad=%u, start_block=%u, blocks=%u\n",
870 p->pad, p->start_block, p->blocks);
871 }
872
873 static void v4l_print_u32(const void *arg, bool write_only)
874 {
875 pr_cont("value=%u\n", *(const u32 *)arg);
876 }
877
878 static void v4l_print_newline(const void *arg, bool write_only)
879 {
880 pr_cont("\n");
881 }
882
883 static void v4l_print_default(const void *arg, bool write_only)
884 {
885 pr_cont("driver-specific ioctl\n");
886 }
887
888 static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
889 {
890 __u32 i;
891
892 /* zero the reserved fields */
893 c->reserved[0] = c->reserved[1] = 0;
894 for (i = 0; i < c->count; i++)
895 c->controls[i].reserved2[0] = 0;
896
897 /* V4L2_CID_PRIVATE_BASE cannot be used as control class
898 when using extended controls.
899 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
900 is it allowed for backwards compatibility.
901 */
902 if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE)
903 return 0;
904 if (c->ctrl_class == 0)
905 return 1;
906 /* Check that all controls are from the same control class. */
907 for (i = 0; i < c->count; i++) {
908 if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) {
909 c->error_idx = i;
910 return 0;
911 }
912 }
913 return 1;
914 }
915
916 static int check_fmt(struct file *file, enum v4l2_buf_type type)
917 {
918 struct video_device *vfd = video_devdata(file);
919 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
920 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
921 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI;
922 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
923 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
924 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
925
926 if (ops == NULL)
927 return -EINVAL;
928
929 switch (type) {
930 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
931 if (is_vid && is_rx &&
932 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane))
933 return 0;
934 break;
935 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
936 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_cap_mplane)
937 return 0;
938 break;
939 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
940 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay)
941 return 0;
942 break;
943 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
944 if (is_vid && is_tx &&
945 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane))
946 return 0;
947 break;
948 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
949 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane)
950 return 0;
951 break;
952 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
953 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay)
954 return 0;
955 break;
956 case V4L2_BUF_TYPE_VBI_CAPTURE:
957 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap)
958 return 0;
959 break;
960 case V4L2_BUF_TYPE_VBI_OUTPUT:
961 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out)
962 return 0;
963 break;
964 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
965 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap)
966 return 0;
967 break;
968 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
969 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out)
970 return 0;
971 break;
972 case V4L2_BUF_TYPE_SDR_CAPTURE:
973 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap)
974 return 0;
975 break;
976 default:
977 break;
978 }
979 return -EINVAL;
980 }
981
982 static void v4l_sanitize_format(struct v4l2_format *fmt)
983 {
984 unsigned int offset;
985
986 /*
987 * The v4l2_pix_format structure has been extended with fields that were
988 * not previously required to be set to zero by applications. The priv
989 * field, when set to a magic value, indicates the the extended fields
990 * are valid. Otherwise they will contain undefined values. To simplify
991 * the API towards drivers zero the extended fields and set the priv
992 * field to the magic value when the extended pixel format structure
993 * isn't used by applications.
994 */
995
996 if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
997 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
998 return;
999
1000 if (fmt->fmt.pix.priv == V4L2_PIX_FMT_PRIV_MAGIC)
1001 return;
1002
1003 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1004
1005 offset = offsetof(struct v4l2_pix_format, priv)
1006 + sizeof(fmt->fmt.pix.priv);
1007 memset(((void *)&fmt->fmt.pix) + offset, 0,
1008 sizeof(fmt->fmt.pix) - offset);
1009 }
1010
1011 static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
1012 struct file *file, void *fh, void *arg)
1013 {
1014 struct v4l2_capability *cap = (struct v4l2_capability *)arg;
1015 int ret;
1016
1017 cap->version = LINUX_VERSION_CODE;
1018
1019 ret = ops->vidioc_querycap(file, fh, cap);
1020
1021 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT;
1022 /*
1023 * Drivers MUST fill in device_caps, so check for this and
1024 * warn if it was forgotten.
1025 */
1026 WARN_ON(!(cap->capabilities & V4L2_CAP_DEVICE_CAPS) ||
1027 !cap->device_caps);
1028 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT;
1029
1030 return ret;
1031 }
1032
1033 static int v4l_s_input(const struct v4l2_ioctl_ops *ops,
1034 struct file *file, void *fh, void *arg)
1035 {
1036 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg);
1037 }
1038
1039 static int v4l_s_output(const struct v4l2_ioctl_ops *ops,
1040 struct file *file, void *fh, void *arg)
1041 {
1042 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg);
1043 }
1044
1045 static int v4l_g_priority(const struct v4l2_ioctl_ops *ops,
1046 struct file *file, void *fh, void *arg)
1047 {
1048 struct video_device *vfd;
1049 u32 *p = arg;
1050
1051 vfd = video_devdata(file);
1052 *p = v4l2_prio_max(vfd->prio);
1053 return 0;
1054 }
1055
1056 static int v4l_s_priority(const struct v4l2_ioctl_ops *ops,
1057 struct file *file, void *fh, void *arg)
1058 {
1059 struct video_device *vfd;
1060 struct v4l2_fh *vfh;
1061 u32 *p = arg;
1062
1063 vfd = video_devdata(file);
1064 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
1065 return -ENOTTY;
1066 vfh = file->private_data;
1067 return v4l2_prio_change(vfd->prio, &vfh->prio, *p);
1068 }
1069
1070 static int v4l_enuminput(const struct v4l2_ioctl_ops *ops,
1071 struct file *file, void *fh, void *arg)
1072 {
1073 struct video_device *vfd = video_devdata(file);
1074 struct v4l2_input *p = arg;
1075
1076 /*
1077 * We set the flags for CAP_DV_TIMINGS &
1078 * CAP_STD here based on ioctl handler provided by the
1079 * driver. If the driver doesn't support these
1080 * for a specific input, it must override these flags.
1081 */
1082 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1083 p->capabilities |= V4L2_IN_CAP_STD;
1084
1085 return ops->vidioc_enum_input(file, fh, p);
1086 }
1087
1088 static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops,
1089 struct file *file, void *fh, void *arg)
1090 {
1091 struct video_device *vfd = video_devdata(file);
1092 struct v4l2_output *p = arg;
1093
1094 /*
1095 * We set the flags for CAP_DV_TIMINGS &
1096 * CAP_STD here based on ioctl handler provided by the
1097 * driver. If the driver doesn't support these
1098 * for a specific output, it must override these flags.
1099 */
1100 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1101 p->capabilities |= V4L2_OUT_CAP_STD;
1102
1103 return ops->vidioc_enum_output(file, fh, p);
1104 }
1105
1106 static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
1107 {
1108 const unsigned sz = sizeof(fmt->description);
1109 const char *descr = NULL;
1110 u32 flags = 0;
1111
1112 /*
1113 * We depart from the normal coding style here since the descriptions
1114 * should be aligned so it is easy to see which descriptions will be
1115 * longer than 31 characters (the max length for a description).
1116 * And frankly, this is easier to read anyway.
1117 *
1118 * Note that gcc will use O(log N) comparisons to find the right case.
1119 */
1120 switch (fmt->pixelformat) {
1121 /* Max description length mask: descr = "0123456789012345678901234567890" */
1122 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break;
1123 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break;
1124 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break;
1125 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break;
1126 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break;
1127 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break;
1128 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break;
1129 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break;
1130 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break;
1131 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break;
1132 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break;
1133 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break;
1134 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break;
1135 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break;
1136 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break;
1137 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break;
1138 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break;
1139 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break;
1140 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break;
1141 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break;
1142 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break;
1143 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break;
1144 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break;
1145 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break;
1146 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break;
1147 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break;
1148 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break;
1149 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break;
1150 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break;
1151 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break;
1152 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break;
1153 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break;
1154 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break;
1155 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break;
1156 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break;
1157 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break;
1158 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break;
1159 case V4L2_PIX_FMT_YUV422P: descr = "Planar YVU 4:2:2"; break;
1160 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break;
1161 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break;
1162 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break;
1163 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break;
1164 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break;
1165 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break;
1166 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break;
1167 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break;
1168 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break;
1169 case V4L2_PIX_FMT_HM12: descr = "YUV 4:2:0 (16x16 Macroblocks)"; break;
1170 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break;
1171 case V4L2_PIX_FMT_NV12: descr = "Y/CbCr 4:2:0"; break;
1172 case V4L2_PIX_FMT_NV21: descr = "Y/CrCb 4:2:0"; break;
1173 case V4L2_PIX_FMT_NV16: descr = "Y/CbCr 4:2:2"; break;
1174 case V4L2_PIX_FMT_NV61: descr = "Y/CrCb 4:2:2"; break;
1175 case V4L2_PIX_FMT_NV24: descr = "Y/CbCr 4:4:4"; break;
1176 case V4L2_PIX_FMT_NV42: descr = "Y/CrCb 4:4:4"; break;
1177 case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break;
1178 case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break;
1179 case V4L2_PIX_FMT_NV16M: descr = "Y/CbCr 4:2:2 (N-C)"; break;
1180 case V4L2_PIX_FMT_NV61M: descr = "Y/CrCb 4:2:2 (N-C)"; break;
1181 case V4L2_PIX_FMT_NV12MT: descr = "Y/CbCr 4:2:0 (64x32 MB, N-C)"; break;
1182 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/CbCr 4:2:0 (16x16 MB, N-C)"; break;
1183 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break;
1184 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break;
1185 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break;
1186 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break;
1187 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break;
1188 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break;
1189 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break;
1190 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break;
1191 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break;
1192 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break;
1193 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break;
1194 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break;
1195 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break;
1196 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break;
1197 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break;
1198 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break;
1199 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break;
1200 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break;
1201 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break;
1202 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break;
1203 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break;
1204 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break;
1205 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break;
1206 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break;
1207 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break;
1208 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break;
1209 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR (Exp.)"; break;
1210 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break;
1211 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break;
1212 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break;
1213 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break;
1214 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break;
1215 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break;
1216 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break;
1217 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break;
1218 case V4L2_SDR_FMT_CU8: descr = "Complex U8 (Emulated)"; break;
1219 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE (Emulated)"; break;
1220 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break;
1221 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break;
1222 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break;
1223
1224 default:
1225 /* Compressed formats */
1226 flags = V4L2_FMT_FLAG_COMPRESSED;
1227 switch (fmt->pixelformat) {
1228 /* Max description length mask: descr = "0123456789012345678901234567890" */
1229 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break;
1230 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break;
1231 case V4L2_PIX_FMT_DV: descr = "1394"; break;
1232 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break;
1233 case V4L2_PIX_FMT_H264: descr = "H.264"; break;
1234 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break;
1235 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break;
1236 case V4L2_PIX_FMT_H263: descr = "H.263"; break;
1237 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break;
1238 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break;
1239 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 part 2 ES"; break;
1240 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break;
1241 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break;
1242 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break;
1243 case V4L2_PIX_FMT_VP8: descr = "VP8"; break;
1244 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break;
1245 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break;
1246 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break;
1247 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break;
1248 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break;
1249 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break;
1250 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break;
1251 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break;
1252 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break;
1253 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break;
1254 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break;
1255 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break;
1256 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break;
1257 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break;
1258 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break;
1259 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break;
1260 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break;
1261 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break;
1262 default:
1263 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat);
1264 if (fmt->description[0])
1265 return;
1266 flags = 0;
1267 snprintf(fmt->description, sz, "%c%c%c%c%s",
1268 (char)(fmt->pixelformat & 0x7f),
1269 (char)((fmt->pixelformat >> 8) & 0x7f),
1270 (char)((fmt->pixelformat >> 16) & 0x7f),
1271 (char)((fmt->pixelformat >> 24) & 0x7f),
1272 (fmt->pixelformat & (1 << 31)) ? "-BE" : "");
1273 break;
1274 }
1275 }
1276
1277 if (descr)
1278 WARN_ON(strlcpy(fmt->description, descr, sz) >= sz);
1279 fmt->flags = flags;
1280 }
1281
1282 static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
1283 struct file *file, void *fh, void *arg)
1284 {
1285 struct v4l2_fmtdesc *p = arg;
1286 struct video_device *vfd = video_devdata(file);
1287 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1288 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
1289 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1290 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
1291 int ret = -EINVAL;
1292
1293 switch (p->type) {
1294 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1295 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_cap))
1296 break;
1297 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
1298 break;
1299 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1300 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_cap_mplane))
1301 break;
1302 ret = ops->vidioc_enum_fmt_vid_cap_mplane(file, fh, arg);
1303 break;
1304 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1305 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_overlay))
1306 break;
1307 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
1308 break;
1309 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1310 if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out))
1311 break;
1312 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg);
1313 break;
1314 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1315 if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out_mplane))
1316 break;
1317 ret = ops->vidioc_enum_fmt_vid_out_mplane(file, fh, arg);
1318 break;
1319 case V4L2_BUF_TYPE_SDR_CAPTURE:
1320 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_enum_fmt_sdr_cap))
1321 break;
1322 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg);
1323 break;
1324 }
1325 if (ret == 0)
1326 v4l_fill_fmtdesc(p);
1327 return ret;
1328 }
1329
1330 static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
1331 struct file *file, void *fh, void *arg)
1332 {
1333 struct v4l2_format *p = arg;
1334 struct video_device *vfd = video_devdata(file);
1335 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1336 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
1337 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1338 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
1339 int ret;
1340
1341 /*
1342 * fmt can't be cleared for these overlay types due to the 'clips'
1343 * 'clipcount' and 'bitmap' pointers in struct v4l2_window.
1344 * Those are provided by the user. So handle these two overlay types
1345 * first, and then just do a simple memset for the other types.
1346 */
1347 switch (p->type) {
1348 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1349 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: {
1350 struct v4l2_clip __user *clips = p->fmt.win.clips;
1351 u32 clipcount = p->fmt.win.clipcount;
1352 void __user *bitmap = p->fmt.win.bitmap;
1353
1354 memset(&p->fmt, 0, sizeof(p->fmt));
1355 p->fmt.win.clips = clips;
1356 p->fmt.win.clipcount = clipcount;
1357 p->fmt.win.bitmap = bitmap;
1358 break;
1359 }
1360 default:
1361 memset(&p->fmt, 0, sizeof(p->fmt));
1362 break;
1363 }
1364
1365 switch (p->type) {
1366 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1367 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap))
1368 break;
1369 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1370 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg);
1371 /* just in case the driver zeroed it again */
1372 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1373 return ret;
1374 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1375 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap_mplane))
1376 break;
1377 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
1378 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1379 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_overlay))
1380 break;
1381 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
1382 case V4L2_BUF_TYPE_VBI_CAPTURE:
1383 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_vbi_cap))
1384 break;
1385 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
1386 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1387 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_cap))
1388 break;
1389 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
1390 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1391 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out))
1392 break;
1393 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1394 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg);
1395 /* just in case the driver zeroed it again */
1396 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1397 return ret;
1398 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1399 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_mplane))
1400 break;
1401 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
1402 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1403 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_overlay))
1404 break;
1405 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
1406 case V4L2_BUF_TYPE_VBI_OUTPUT:
1407 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_vbi_out))
1408 break;
1409 return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
1410 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1411 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_out))
1412 break;
1413 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
1414 case V4L2_BUF_TYPE_SDR_CAPTURE:
1415 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_g_fmt_sdr_cap))
1416 break;
1417 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg);
1418 }
1419 return -EINVAL;
1420 }
1421
1422 static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
1423 struct file *file, void *fh, void *arg)
1424 {
1425 struct v4l2_format *p = arg;
1426 struct video_device *vfd = video_devdata(file);
1427 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1428 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
1429 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1430 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
1431 int ret;
1432
1433 v4l_sanitize_format(p);
1434
1435 switch (p->type) {
1436 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1437 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap))
1438 break;
1439 CLEAR_AFTER_FIELD(p, fmt.pix);
1440 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg);
1441 /* just in case the driver zeroed it again */
1442 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1443 return ret;
1444 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1445 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap_mplane))
1446 break;
1447 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1448 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
1449 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1450 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_overlay))
1451 break;
1452 CLEAR_AFTER_FIELD(p, fmt.win);
1453 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
1454 case V4L2_BUF_TYPE_VBI_CAPTURE:
1455 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_vbi_cap))
1456 break;
1457 CLEAR_AFTER_FIELD(p, fmt.vbi);
1458 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
1459 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1460 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_cap))
1461 break;
1462 CLEAR_AFTER_FIELD(p, fmt.sliced);
1463 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
1464 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1465 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out))
1466 break;
1467 CLEAR_AFTER_FIELD(p, fmt.pix);
1468 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg);
1469 /* just in case the driver zeroed it again */
1470 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1471 return ret;
1472 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1473 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_mplane))
1474 break;
1475 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1476 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
1477 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1478 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_overlay))
1479 break;
1480 CLEAR_AFTER_FIELD(p, fmt.win);
1481 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
1482 case V4L2_BUF_TYPE_VBI_OUTPUT:
1483 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_vbi_out))
1484 break;
1485 CLEAR_AFTER_FIELD(p, fmt.vbi);
1486 return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
1487 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1488 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_out))
1489 break;
1490 CLEAR_AFTER_FIELD(p, fmt.sliced);
1491 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
1492 case V4L2_BUF_TYPE_SDR_CAPTURE:
1493 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_s_fmt_sdr_cap))
1494 break;
1495 CLEAR_AFTER_FIELD(p, fmt.sdr);
1496 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg);
1497 }
1498 return -EINVAL;
1499 }
1500
1501 static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
1502 struct file *file, void *fh, void *arg)
1503 {
1504 struct v4l2_format *p = arg;
1505 struct video_device *vfd = video_devdata(file);
1506 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1507 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
1508 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1509 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
1510 int ret;
1511
1512 v4l_sanitize_format(p);
1513
1514 switch (p->type) {
1515 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1516 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap))
1517 break;
1518 CLEAR_AFTER_FIELD(p, fmt.pix);
1519 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg);
1520 /* just in case the driver zeroed it again */
1521 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1522 return ret;
1523 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1524 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap_mplane))
1525 break;
1526 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1527 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
1528 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1529 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_overlay))
1530 break;
1531 CLEAR_AFTER_FIELD(p, fmt.win);
1532 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
1533 case V4L2_BUF_TYPE_VBI_CAPTURE:
1534 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_vbi_cap))
1535 break;
1536 CLEAR_AFTER_FIELD(p, fmt.vbi);
1537 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
1538 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1539 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_cap))
1540 break;
1541 CLEAR_AFTER_FIELD(p, fmt.sliced);
1542 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
1543 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1544 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out))
1545 break;
1546 CLEAR_AFTER_FIELD(p, fmt.pix);
1547 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg);
1548 /* just in case the driver zeroed it again */
1549 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1550 return ret;
1551 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1552 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_mplane))
1553 break;
1554 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1555 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
1556 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1557 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_overlay))
1558 break;
1559 CLEAR_AFTER_FIELD(p, fmt.win);
1560 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
1561 case V4L2_BUF_TYPE_VBI_OUTPUT:
1562 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_vbi_out))
1563 break;
1564 CLEAR_AFTER_FIELD(p, fmt.vbi);
1565 return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
1566 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1567 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_out))
1568 break;
1569 CLEAR_AFTER_FIELD(p, fmt.sliced);
1570 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
1571 case V4L2_BUF_TYPE_SDR_CAPTURE:
1572 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_try_fmt_sdr_cap))
1573 break;
1574 CLEAR_AFTER_FIELD(p, fmt.sdr);
1575 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg);
1576 }
1577 return -EINVAL;
1578 }
1579
1580 static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
1581 struct file *file, void *fh, void *arg)
1582 {
1583 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
1584 }
1585
1586 static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
1587 struct file *file, void *fh, void *arg)
1588 {
1589 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
1590 }
1591
1592 static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,
1593 struct file *file, void *fh, void *arg)
1594 {
1595 struct video_device *vfd = video_devdata(file);
1596 struct v4l2_tuner *p = arg;
1597 int err;
1598
1599 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1600 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1601 err = ops->vidioc_g_tuner(file, fh, p);
1602 if (!err)
1603 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1604 return err;
1605 }
1606
1607 static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
1608 struct file *file, void *fh, void *arg)
1609 {
1610 struct video_device *vfd = video_devdata(file);
1611 struct v4l2_tuner *p = arg;
1612
1613 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1614 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1615 return ops->vidioc_s_tuner(file, fh, p);
1616 }
1617
1618 static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,
1619 struct file *file, void *fh, void *arg)
1620 {
1621 struct v4l2_modulator *p = arg;
1622 int err;
1623
1624 err = ops->vidioc_g_modulator(file, fh, p);
1625 if (!err)
1626 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1627 return err;
1628 }
1629
1630 static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
1631 struct file *file, void *fh, void *arg)
1632 {
1633 struct video_device *vfd = video_devdata(file);
1634 struct v4l2_frequency *p = arg;
1635
1636 if (vfd->vfl_type == VFL_TYPE_SDR)
1637 p->type = V4L2_TUNER_ADC;
1638 else
1639 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1640 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1641 return ops->vidioc_g_frequency(file, fh, p);
1642 }
1643
1644 static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
1645 struct file *file, void *fh, void *arg)
1646 {
1647 struct video_device *vfd = video_devdata(file);
1648 const struct v4l2_frequency *p = arg;
1649 enum v4l2_tuner_type type;
1650
1651 if (vfd->vfl_type == VFL_TYPE_SDR) {
1652 if (p->type != V4L2_TUNER_ADC && p->type != V4L2_TUNER_RF)
1653 return -EINVAL;
1654 } else {
1655 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1656 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1657 if (type != p->type)
1658 return -EINVAL;
1659 }
1660 return ops->vidioc_s_frequency(file, fh, p);
1661 }
1662
1663 static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
1664 struct file *file, void *fh, void *arg)
1665 {
1666 struct video_device *vfd = video_devdata(file);
1667 struct v4l2_standard *p = arg;
1668 v4l2_std_id id = vfd->tvnorms, curr_id = 0;
1669 unsigned int index = p->index, i, j = 0;
1670 const char *descr = "";
1671
1672 /* Return -ENODATA if the tvnorms for the current input
1673 or output is 0, meaning that it doesn't support this API. */
1674 if (id == 0)
1675 return -ENODATA;
1676
1677 /* Return norm array in a canonical way */
1678 for (i = 0; i <= index && id; i++) {
1679 /* last std value in the standards array is 0, so this
1680 while always ends there since (id & 0) == 0. */
1681 while ((id & standards[j].std) != standards[j].std)
1682 j++;
1683 curr_id = standards[j].std;
1684 descr = standards[j].descr;
1685 j++;
1686 if (curr_id == 0)
1687 break;
1688 if (curr_id != V4L2_STD_PAL &&
1689 curr_id != V4L2_STD_SECAM &&
1690 curr_id != V4L2_STD_NTSC)
1691 id &= ~curr_id;
1692 }
1693 if (i <= index)
1694 return -EINVAL;
1695
1696 v4l2_video_std_construct(p, curr_id, descr);
1697 return 0;
1698 }
1699
1700 static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
1701 struct file *file, void *fh, void *arg)
1702 {
1703 struct video_device *vfd = video_devdata(file);
1704 v4l2_std_id id = *(v4l2_std_id *)arg, norm;
1705
1706 norm = id & vfd->tvnorms;
1707 if (vfd->tvnorms && !norm) /* Check if std is supported */
1708 return -EINVAL;
1709
1710 /* Calls the specific handler */
1711 return ops->vidioc_s_std(file, fh, norm);
1712 }
1713
1714 static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
1715 struct file *file, void *fh, void *arg)
1716 {
1717 struct video_device *vfd = video_devdata(file);
1718 v4l2_std_id *p = arg;
1719
1720 /*
1721 * If no signal is detected, then the driver should return
1722 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with
1723 * any standards that do not apply removed.
1724 *
1725 * This means that tuners, audio and video decoders can join
1726 * their efforts to improve the standards detection.
1727 */
1728 *p = vfd->tvnorms;
1729 return ops->vidioc_querystd(file, fh, arg);
1730 }
1731
1732 static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
1733 struct file *file, void *fh, void *arg)
1734 {
1735 struct video_device *vfd = video_devdata(file);
1736 struct v4l2_hw_freq_seek *p = arg;
1737 enum v4l2_tuner_type type;
1738
1739 /* s_hw_freq_seek is not supported for SDR for now */
1740 if (vfd->vfl_type == VFL_TYPE_SDR)
1741 return -EINVAL;
1742
1743 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1744 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1745 if (p->type != type)
1746 return -EINVAL;
1747 return ops->vidioc_s_hw_freq_seek(file, fh, p);
1748 }
1749
1750 static int v4l_overlay(const struct v4l2_ioctl_ops *ops,
1751 struct file *file, void *fh, void *arg)
1752 {
1753 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg);
1754 }
1755
1756 static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,
1757 struct file *file, void *fh, void *arg)
1758 {
1759 struct v4l2_requestbuffers *p = arg;
1760 int ret = check_fmt(file, p->type);
1761
1762 if (ret)
1763 return ret;
1764
1765 CLEAR_AFTER_FIELD(p, memory);
1766
1767 return ops->vidioc_reqbufs(file, fh, p);
1768 }
1769
1770 static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,
1771 struct file *file, void *fh, void *arg)
1772 {
1773 struct v4l2_buffer *p = arg;
1774 int ret = check_fmt(file, p->type);
1775
1776 return ret ? ret : ops->vidioc_querybuf(file, fh, p);
1777 }
1778
1779 static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,
1780 struct file *file, void *fh, void *arg)
1781 {
1782 struct v4l2_buffer *p = arg;
1783 int ret = check_fmt(file, p->type);
1784
1785 return ret ? ret : ops->vidioc_qbuf(file, fh, p);
1786 }
1787
1788 static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,
1789 struct file *file, void *fh, void *arg)
1790 {
1791 struct v4l2_buffer *p = arg;
1792 int ret = check_fmt(file, p->type);
1793
1794 return ret ? ret : ops->vidioc_dqbuf(file, fh, p);
1795 }
1796
1797 static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
1798 struct file *file, void *fh, void *arg)
1799 {
1800 struct v4l2_create_buffers *create = arg;
1801 int ret = check_fmt(file, create->format.type);
1802
1803 if (ret)
1804 return ret;
1805
1806 v4l_sanitize_format(&create->format);
1807
1808 ret = ops->vidioc_create_bufs(file, fh, create);
1809
1810 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1811 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1812 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1813
1814 return ret;
1815 }
1816
1817 static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
1818 struct file *file, void *fh, void *arg)
1819 {
1820 struct v4l2_buffer *b = arg;
1821 int ret = check_fmt(file, b->type);
1822
1823 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
1824 }
1825
1826 static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
1827 struct file *file, void *fh, void *arg)
1828 {
1829 struct v4l2_streamparm *p = arg;
1830 v4l2_std_id std;
1831 int ret = check_fmt(file, p->type);
1832
1833 if (ret)
1834 return ret;
1835 if (ops->vidioc_g_parm)
1836 return ops->vidioc_g_parm(file, fh, p);
1837 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1838 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1839 return -EINVAL;
1840 p->parm.capture.readbuffers = 2;
1841 ret = ops->vidioc_g_std(file, fh, &std);
1842 if (ret == 0)
1843 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe);
1844 return ret;
1845 }
1846
1847 static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
1848 struct file *file, void *fh, void *arg)
1849 {
1850 struct v4l2_streamparm *p = arg;
1851 int ret = check_fmt(file, p->type);
1852
1853 return ret ? ret : ops->vidioc_s_parm(file, fh, p);
1854 }
1855
1856 static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,
1857 struct file *file, void *fh, void *arg)
1858 {
1859 struct video_device *vfd = video_devdata(file);
1860 struct v4l2_queryctrl *p = arg;
1861 struct v4l2_fh *vfh =
1862 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1863
1864 if (vfh && vfh->ctrl_handler)
1865 return v4l2_queryctrl(vfh->ctrl_handler, p);
1866 if (vfd->ctrl_handler)
1867 return v4l2_queryctrl(vfd->ctrl_handler, p);
1868 if (ops->vidioc_queryctrl)
1869 return ops->vidioc_queryctrl(file, fh, p);
1870 return -ENOTTY;
1871 }
1872
1873 static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops,
1874 struct file *file, void *fh, void *arg)
1875 {
1876 struct video_device *vfd = video_devdata(file);
1877 struct v4l2_query_ext_ctrl *p = arg;
1878 struct v4l2_fh *vfh =
1879 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1880
1881 if (vfh && vfh->ctrl_handler)
1882 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p);
1883 if (vfd->ctrl_handler)
1884 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p);
1885 if (ops->vidioc_query_ext_ctrl)
1886 return ops->vidioc_query_ext_ctrl(file, fh, p);
1887 return -ENOTTY;
1888 }
1889
1890 static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,
1891 struct file *file, void *fh, void *arg)
1892 {
1893 struct video_device *vfd = video_devdata(file);
1894 struct v4l2_querymenu *p = arg;
1895 struct v4l2_fh *vfh =
1896 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1897
1898 if (vfh && vfh->ctrl_handler)
1899 return v4l2_querymenu(vfh->ctrl_handler, p);
1900 if (vfd->ctrl_handler)
1901 return v4l2_querymenu(vfd->ctrl_handler, p);
1902 if (ops->vidioc_querymenu)
1903 return ops->vidioc_querymenu(file, fh, p);
1904 return -ENOTTY;
1905 }
1906
1907 static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops,
1908 struct file *file, void *fh, void *arg)
1909 {
1910 struct video_device *vfd = video_devdata(file);
1911 struct v4l2_control *p = arg;
1912 struct v4l2_fh *vfh =
1913 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1914 struct v4l2_ext_controls ctrls;
1915 struct v4l2_ext_control ctrl;
1916
1917 if (vfh && vfh->ctrl_handler)
1918 return v4l2_g_ctrl(vfh->ctrl_handler, p);
1919 if (vfd->ctrl_handler)
1920 return v4l2_g_ctrl(vfd->ctrl_handler, p);
1921 if (ops->vidioc_g_ctrl)
1922 return ops->vidioc_g_ctrl(file, fh, p);
1923 if (ops->vidioc_g_ext_ctrls == NULL)
1924 return -ENOTTY;
1925
1926 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1927 ctrls.count = 1;
1928 ctrls.controls = &ctrl;
1929 ctrl.id = p->id;
1930 ctrl.value = p->value;
1931 if (check_ext_ctrls(&ctrls, 1)) {
1932 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
1933
1934 if (ret == 0)
1935 p->value = ctrl.value;
1936 return ret;
1937 }
1938 return -EINVAL;
1939 }
1940
1941 static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,
1942 struct file *file, void *fh, void *arg)
1943 {
1944 struct video_device *vfd = video_devdata(file);
1945 struct v4l2_control *p = arg;
1946 struct v4l2_fh *vfh =
1947 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1948 struct v4l2_ext_controls ctrls;
1949 struct v4l2_ext_control ctrl;
1950
1951 if (vfh && vfh->ctrl_handler)
1952 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
1953 if (vfd->ctrl_handler)
1954 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
1955 if (ops->vidioc_s_ctrl)
1956 return ops->vidioc_s_ctrl(file, fh, p);
1957 if (ops->vidioc_s_ext_ctrls == NULL)
1958 return -ENOTTY;
1959
1960 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1961 ctrls.count = 1;
1962 ctrls.controls = &ctrl;
1963 ctrl.id = p->id;
1964 ctrl.value = p->value;
1965 if (check_ext_ctrls(&ctrls, 1))
1966 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
1967 return -EINVAL;
1968 }
1969
1970 static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1971 struct file *file, void *fh, void *arg)
1972 {
1973 struct video_device *vfd = video_devdata(file);
1974 struct v4l2_ext_controls *p = arg;
1975 struct v4l2_fh *vfh =
1976 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1977
1978 p->error_idx = p->count;
1979 if (vfh && vfh->ctrl_handler)
1980 return v4l2_g_ext_ctrls(vfh->ctrl_handler, p);
1981 if (vfd->ctrl_handler)
1982 return v4l2_g_ext_ctrls(vfd->ctrl_handler, p);
1983 if (ops->vidioc_g_ext_ctrls == NULL)
1984 return -ENOTTY;
1985 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :
1986 -EINVAL;
1987 }
1988
1989 static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1990 struct file *file, void *fh, void *arg)
1991 {
1992 struct video_device *vfd = video_devdata(file);
1993 struct v4l2_ext_controls *p = arg;
1994 struct v4l2_fh *vfh =
1995 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1996
1997 p->error_idx = p->count;
1998 if (vfh && vfh->ctrl_handler)
1999 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, p);
2000 if (vfd->ctrl_handler)
2001 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, p);
2002 if (ops->vidioc_s_ext_ctrls == NULL)
2003 return -ENOTTY;
2004 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :
2005 -EINVAL;
2006 }
2007
2008 static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2009 struct file *file, void *fh, void *arg)
2010 {
2011 struct video_device *vfd = video_devdata(file);
2012 struct v4l2_ext_controls *p = arg;
2013 struct v4l2_fh *vfh =
2014 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2015
2016 p->error_idx = p->count;
2017 if (vfh && vfh->ctrl_handler)
2018 return v4l2_try_ext_ctrls(vfh->ctrl_handler, p);
2019 if (vfd->ctrl_handler)
2020 return v4l2_try_ext_ctrls(vfd->ctrl_handler, p);
2021 if (ops->vidioc_try_ext_ctrls == NULL)
2022 return -ENOTTY;
2023 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :
2024 -EINVAL;
2025 }
2026
2027 static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
2028 struct file *file, void *fh, void *arg)
2029 {
2030 struct v4l2_crop *p = arg;
2031 struct v4l2_selection s = {
2032 .type = p->type,
2033 };
2034 int ret;
2035
2036 if (ops->vidioc_g_crop)
2037 return ops->vidioc_g_crop(file, fh, p);
2038 /* simulate capture crop using selection api */
2039
2040 /* crop means compose for output devices */
2041 if (V4L2_TYPE_IS_OUTPUT(p->type))
2042 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
2043 else
2044 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
2045
2046 ret = ops->vidioc_g_selection(file, fh, &s);
2047
2048 /* copying results to old structure on success */
2049 if (!ret)
2050 p->c = s.r;
2051 return ret;
2052 }
2053
2054 static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
2055 struct file *file, void *fh, void *arg)
2056 {
2057 struct v4l2_crop *p = arg;
2058 struct v4l2_selection s = {
2059 .type = p->type,
2060 .r = p->c,
2061 };
2062
2063 if (ops->vidioc_s_crop)
2064 return ops->vidioc_s_crop(file, fh, p);
2065 /* simulate capture crop using selection api */
2066
2067 /* crop means compose for output devices */
2068 if (V4L2_TYPE_IS_OUTPUT(p->type))
2069 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
2070 else
2071 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
2072
2073 return ops->vidioc_s_selection(file, fh, &s);
2074 }
2075
2076 static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
2077 struct file *file, void *fh, void *arg)
2078 {
2079 struct v4l2_cropcap *p = arg;
2080
2081 if (ops->vidioc_g_selection) {
2082 struct v4l2_selection s = { .type = p->type };
2083 int ret;
2084
2085 /* obtaining bounds */
2086 if (V4L2_TYPE_IS_OUTPUT(p->type))
2087 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
2088 else
2089 s.target = V4L2_SEL_TGT_CROP_BOUNDS;
2090
2091 ret = ops->vidioc_g_selection(file, fh, &s);
2092 if (ret)
2093 return ret;
2094 p->bounds = s.r;
2095
2096 /* obtaining defrect */
2097 if (V4L2_TYPE_IS_OUTPUT(p->type))
2098 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
2099 else
2100 s.target = V4L2_SEL_TGT_CROP_DEFAULT;
2101
2102 ret = ops->vidioc_g_selection(file, fh, &s);
2103 if (ret)
2104 return ret;
2105 p->defrect = s.r;
2106 }
2107
2108 /* setting trivial pixelaspect */
2109 p->pixelaspect.numerator = 1;
2110 p->pixelaspect.denominator = 1;
2111
2112 if (ops->vidioc_cropcap)
2113 return ops->vidioc_cropcap(file, fh, p);
2114
2115 return 0;
2116 }
2117
2118 static int v4l_log_status(const struct v4l2_ioctl_ops *ops,
2119 struct file *file, void *fh, void *arg)
2120 {
2121 struct video_device *vfd = video_devdata(file);
2122 int ret;
2123
2124 if (vfd->v4l2_dev)
2125 pr_info("%s: ================= START STATUS =================\n",
2126 vfd->v4l2_dev->name);
2127 ret = ops->vidioc_log_status(file, fh);
2128 if (vfd->v4l2_dev)
2129 pr_info("%s: ================== END STATUS ==================\n",
2130 vfd->v4l2_dev->name);
2131 return ret;
2132 }
2133
2134 static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
2135 struct file *file, void *fh, void *arg)
2136 {
2137 #ifdef CONFIG_VIDEO_ADV_DEBUG
2138 struct v4l2_dbg_register *p = arg;
2139 struct video_device *vfd = video_devdata(file);
2140 struct v4l2_subdev *sd;
2141 int idx = 0;
2142
2143 if (!capable(CAP_SYS_ADMIN))
2144 return -EPERM;
2145 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2146 if (vfd->v4l2_dev == NULL)
2147 return -EINVAL;
2148 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2149 if (p->match.addr == idx++)
2150 return v4l2_subdev_call(sd, core, g_register, p);
2151 return -EINVAL;
2152 }
2153 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2154 (ops->vidioc_g_chip_info || p->match.addr == 0))
2155 return ops->vidioc_g_register(file, fh, p);
2156 return -EINVAL;
2157 #else
2158 return -ENOTTY;
2159 #endif
2160 }
2161
2162 static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
2163 struct file *file, void *fh, void *arg)
2164 {
2165 #ifdef CONFIG_VIDEO_ADV_DEBUG
2166 const struct v4l2_dbg_register *p = arg;
2167 struct video_device *vfd = video_devdata(file);
2168 struct v4l2_subdev *sd;
2169 int idx = 0;
2170
2171 if (!capable(CAP_SYS_ADMIN))
2172 return -EPERM;
2173 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2174 if (vfd->v4l2_dev == NULL)
2175 return -EINVAL;
2176 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2177 if (p->match.addr == idx++)
2178 return v4l2_subdev_call(sd, core, s_register, p);
2179 return -EINVAL;
2180 }
2181 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2182 (ops->vidioc_g_chip_info || p->match.addr == 0))
2183 return ops->vidioc_s_register(file, fh, p);
2184 return -EINVAL;
2185 #else
2186 return -ENOTTY;
2187 #endif
2188 }
2189
2190 static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,
2191 struct file *file, void *fh, void *arg)
2192 {
2193 #ifdef CONFIG_VIDEO_ADV_DEBUG
2194 struct video_device *vfd = video_devdata(file);
2195 struct v4l2_dbg_chip_info *p = arg;
2196 struct v4l2_subdev *sd;
2197 int idx = 0;
2198
2199 switch (p->match.type) {
2200 case V4L2_CHIP_MATCH_BRIDGE:
2201 if (ops->vidioc_s_register)
2202 p->flags |= V4L2_CHIP_FL_WRITABLE;
2203 if (ops->vidioc_g_register)
2204 p->flags |= V4L2_CHIP_FL_READABLE;
2205 strlcpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));
2206 if (ops->vidioc_g_chip_info)
2207 return ops->vidioc_g_chip_info(file, fh, arg);
2208 if (p->match.addr)
2209 return -EINVAL;
2210 return 0;
2211
2212 case V4L2_CHIP_MATCH_SUBDEV:
2213 if (vfd->v4l2_dev == NULL)
2214 break;
2215 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {
2216 if (p->match.addr != idx++)
2217 continue;
2218 if (sd->ops->core && sd->ops->core->s_register)
2219 p->flags |= V4L2_CHIP_FL_WRITABLE;
2220 if (sd->ops->core && sd->ops->core->g_register)
2221 p->flags |= V4L2_CHIP_FL_READABLE;
2222 strlcpy(p->name, sd->name, sizeof(p->name));
2223 return 0;
2224 }
2225 break;
2226 }
2227 return -EINVAL;
2228 #else
2229 return -ENOTTY;
2230 #endif
2231 }
2232
2233 static int v4l_dqevent(const struct v4l2_ioctl_ops *ops,
2234 struct file *file, void *fh, void *arg)
2235 {
2236 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK);
2237 }
2238
2239 static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,
2240 struct file *file, void *fh, void *arg)
2241 {
2242 return ops->vidioc_subscribe_event(fh, arg);
2243 }
2244
2245 static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,
2246 struct file *file, void *fh, void *arg)
2247 {
2248 return ops->vidioc_unsubscribe_event(fh, arg);
2249 }
2250
2251 static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,
2252 struct file *file, void *fh, void *arg)
2253 {
2254 struct v4l2_sliced_vbi_cap *p = arg;
2255 int ret = check_fmt(file, p->type);
2256
2257 if (ret)
2258 return ret;
2259
2260 /* Clear up to type, everything after type is zeroed already */
2261 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
2262
2263 return ops->vidioc_g_sliced_vbi_cap(file, fh, p);
2264 }
2265
2266 static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
2267 struct file *file, void *fh, void *arg)
2268 {
2269 struct video_device *vfd = video_devdata(file);
2270 struct v4l2_frequency_band *p = arg;
2271 enum v4l2_tuner_type type;
2272 int err;
2273
2274 if (vfd->vfl_type == VFL_TYPE_SDR) {
2275 if (p->type != V4L2_TUNER_ADC && p->type != V4L2_TUNER_RF)
2276 return -EINVAL;
2277 type = p->type;
2278 } else {
2279 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2280 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2281 if (type != p->type)
2282 return -EINVAL;
2283 }
2284 if (ops->vidioc_enum_freq_bands) {
2285 err = ops->vidioc_enum_freq_bands(file, fh, p);
2286 if (err != -ENOTTY)
2287 return err;
2288 }
2289 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) {
2290 struct v4l2_tuner t = {
2291 .index = p->tuner,
2292 .type = type,
2293 };
2294
2295 if (p->index)
2296 return -EINVAL;
2297 err = ops->vidioc_g_tuner(file, fh, &t);
2298 if (err)
2299 return err;
2300 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2301 p->rangelow = t.rangelow;
2302 p->rangehigh = t.rangehigh;
2303 p->modulation = (type == V4L2_TUNER_RADIO) ?
2304 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2305 return 0;
2306 }
2307 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) {
2308 struct v4l2_modulator m = {
2309 .index = p->tuner,
2310 };
2311
2312 if (type != V4L2_TUNER_RADIO)
2313 return -EINVAL;
2314 if (p->index)
2315 return -EINVAL;
2316 err = ops->vidioc_g_modulator(file, fh, &m);
2317 if (err)
2318 return err;
2319 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2320 p->rangelow = m.rangelow;
2321 p->rangehigh = m.rangehigh;
2322 p->modulation = (type == V4L2_TUNER_RADIO) ?
2323 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2324 return 0;
2325 }
2326 return -ENOTTY;
2327 }
2328
2329 struct v4l2_ioctl_info {
2330 unsigned int ioctl;
2331 u32 flags;
2332 const char * const name;
2333 union {
2334 u32 offset;
2335 int (*func)(const struct v4l2_ioctl_ops *ops,
2336 struct file *file, void *fh, void *p);
2337 } u;
2338 void (*debug)(const void *arg, bool write_only);
2339 };
2340
2341 /* This control needs a priority check */
2342 #define INFO_FL_PRIO (1 << 0)
2343 /* This control can be valid if the filehandle passes a control handler. */
2344 #define INFO_FL_CTRL (1 << 1)
2345 /* This is a standard ioctl, no need for special code */
2346 #define INFO_FL_STD (1 << 2)
2347 /* This is ioctl has its own function */
2348 #define INFO_FL_FUNC (1 << 3)
2349 /* Queuing ioctl */
2350 #define INFO_FL_QUEUE (1 << 4)
2351 /* Zero struct from after the field to the end */
2352 #define INFO_FL_CLEAR(v4l2_struct, field) \
2353 ((offsetof(struct v4l2_struct, field) + \
2354 sizeof(((struct v4l2_struct *)0)->field)) << 16)
2355 #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
2356
2357 #define IOCTL_INFO_STD(_ioctl, _vidioc, _debug, _flags) \
2358 [_IOC_NR(_ioctl)] = { \
2359 .ioctl = _ioctl, \
2360 .flags = _flags | INFO_FL_STD, \
2361 .name = #_ioctl, \
2362 .u.offset = offsetof(struct v4l2_ioctl_ops, _vidioc), \
2363 .debug = _debug, \
2364 }
2365
2366 #define IOCTL_INFO_FNC(_ioctl, _func, _debug, _flags) \
2367 [_IOC_NR(_ioctl)] = { \
2368 .ioctl = _ioctl, \
2369 .flags = _flags | INFO_FL_FUNC, \
2370 .name = #_ioctl, \
2371 .u.func = _func, \
2372 .debug = _debug, \
2373 }
2374
2375 static struct v4l2_ioctl_info v4l2_ioctls[] = {
2376 IOCTL_INFO_FNC(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
2377 IOCTL_INFO_FNC(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)),
2378 IOCTL_INFO_FNC(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0),
2379 IOCTL_INFO_FNC(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
2380 IOCTL_INFO_FNC(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2381 IOCTL_INFO_FNC(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
2382 IOCTL_INFO_STD(VIDIOC_G_FBUF, vidioc_g_fbuf, v4l_print_framebuffer, 0),
2383 IOCTL_INFO_STD(VIDIOC_S_FBUF, vidioc_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
2384 IOCTL_INFO_FNC(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO),
2385 IOCTL_INFO_FNC(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),
2386 IOCTL_INFO_STD(VIDIOC_EXPBUF, vidioc_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)),
2387 IOCTL_INFO_FNC(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),
2388 IOCTL_INFO_FNC(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2389 IOCTL_INFO_FNC(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2390 IOCTL_INFO_FNC(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
2391 IOCTL_INFO_FNC(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
2392 IOCTL_INFO_STD(VIDIOC_G_STD, vidioc_g_std, v4l_print_std, 0),
2393 IOCTL_INFO_FNC(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
2394 IOCTL_INFO_FNC(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
2395 IOCTL_INFO_FNC(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
2396 IOCTL_INFO_FNC(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
2397 IOCTL_INFO_FNC(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
2398 IOCTL_INFO_FNC(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
2399 IOCTL_INFO_FNC(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
2400 IOCTL_INFO_STD(VIDIOC_G_AUDIO, vidioc_g_audio, v4l_print_audio, 0),
2401 IOCTL_INFO_STD(VIDIOC_S_AUDIO, vidioc_s_audio, v4l_print_audio, INFO_FL_PRIO),
2402 IOCTL_INFO_FNC(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
2403 IOCTL_INFO_FNC(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
2404 IOCTL_INFO_STD(VIDIOC_G_INPUT, vidioc_g_input, v4l_print_u32, 0),
2405 IOCTL_INFO_FNC(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
2406 IOCTL_INFO_STD(VIDIOC_G_EDID, vidioc_g_edid, v4l_print_edid, 0),
2407 IOCTL_INFO_STD(VIDIOC_S_EDID, vidioc_s_edid, v4l_print_edid, INFO_FL_PRIO),
2408 IOCTL_INFO_STD(VIDIOC_G_OUTPUT, vidioc_g_output, v4l_print_u32, 0),
2409 IOCTL_INFO_FNC(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
2410 IOCTL_INFO_FNC(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
2411 IOCTL_INFO_STD(VIDIOC_G_AUDOUT, vidioc_g_audout, v4l_print_audioout, 0),
2412 IOCTL_INFO_STD(VIDIOC_S_AUDOUT, vidioc_s_audout, v4l_print_audioout, INFO_FL_PRIO),
2413 IOCTL_INFO_FNC(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
2414 IOCTL_INFO_STD(VIDIOC_S_MODULATOR, vidioc_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
2415 IOCTL_INFO_FNC(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
2416 IOCTL_INFO_FNC(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
2417 IOCTL_INFO_FNC(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
2418 IOCTL_INFO_FNC(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
2419 IOCTL_INFO_FNC(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
2420 IOCTL_INFO_STD(VIDIOC_G_SELECTION, vidioc_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)),
2421 IOCTL_INFO_STD(VIDIOC_S_SELECTION, vidioc_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)),
2422 IOCTL_INFO_STD(VIDIOC_G_JPEGCOMP, vidioc_g_jpegcomp, v4l_print_jpegcompression, 0),
2423 IOCTL_INFO_STD(VIDIOC_S_JPEGCOMP, vidioc_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
2424 IOCTL_INFO_FNC(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
2425 IOCTL_INFO_FNC(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
2426 IOCTL_INFO_STD(VIDIOC_ENUMAUDIO, vidioc_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
2427 IOCTL_INFO_STD(VIDIOC_ENUMAUDOUT, vidioc_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
2428 IOCTL_INFO_FNC(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
2429 IOCTL_INFO_FNC(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
2430 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)),
2431 IOCTL_INFO_FNC(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
2432 IOCTL_INFO_FNC(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2433 IOCTL_INFO_FNC(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL),
2434 IOCTL_INFO_FNC(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2435 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMESIZES, vidioc_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
2436 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMEINTERVALS, vidioc_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
2437 IOCTL_INFO_STD(VIDIOC_G_ENC_INDEX, vidioc_g_enc_index, v4l_print_enc_idx, 0),
2438 IOCTL_INFO_STD(VIDIOC_ENCODER_CMD, vidioc_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2439 IOCTL_INFO_STD(VIDIOC_TRY_ENCODER_CMD, vidioc_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2440 IOCTL_INFO_STD(VIDIOC_DECODER_CMD, vidioc_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
2441 IOCTL_INFO_STD(VIDIOC_TRY_DECODER_CMD, vidioc_try_decoder_cmd, v4l_print_decoder_cmd, 0),
2442 IOCTL_INFO_FNC(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
2443 IOCTL_INFO_FNC(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
2444 IOCTL_INFO_FNC(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
2445 IOCTL_INFO_STD(VIDIOC_S_DV_TIMINGS, vidioc_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO),
2446 IOCTL_INFO_STD(VIDIOC_G_DV_TIMINGS, vidioc_g_dv_timings, v4l_print_dv_timings, 0),
2447 IOCTL_INFO_FNC(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
2448 IOCTL_INFO_FNC(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
2449 IOCTL_INFO_FNC(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
2450 IOCTL_INFO_FNC(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2451 IOCTL_INFO_FNC(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
2452 IOCTL_INFO_STD(VIDIOC_ENUM_DV_TIMINGS, vidioc_enum_dv_timings, v4l_print_enum_dv_timings, 0),
2453 IOCTL_INFO_STD(VIDIOC_QUERY_DV_TIMINGS, vidioc_query_dv_timings, v4l_print_dv_timings, 0),
2454 IOCTL_INFO_STD(VIDIOC_DV_TIMINGS_CAP, vidioc_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, type)),
2455 IOCTL_INFO_FNC(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
2456 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)),
2457 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)),
2458 };
2459 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
2460
2461 bool v4l2_is_known_ioctl(unsigned int cmd)
2462 {
2463 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2464 return false;
2465 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
2466 }
2467
2468 struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd)
2469 {
2470 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2471 return vdev->lock;
2472 if (test_bit(_IOC_NR(cmd), vdev->disable_locking))
2473 return NULL;
2474 if (vdev->queue && vdev->queue->lock &&
2475 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
2476 return vdev->queue->lock;
2477 return vdev->lock;
2478 }
2479
2480 /* Common ioctl debug function. This function can be used by
2481 external ioctl messages as well as internal V4L ioctl */
2482 void v4l_printk_ioctl(const char *prefix, unsigned int cmd)
2483 {
2484 const char *dir, *type;
2485
2486 if (prefix)
2487 printk(KERN_DEBUG "%s: ", prefix);
2488
2489 switch (_IOC_TYPE(cmd)) {
2490 case 'd':
2491 type = "v4l2_int";
2492 break;
2493 case 'V':
2494 if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
2495 type = "v4l2";
2496 break;
2497 }
2498 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
2499 return;
2500 default:
2501 type = "unknown";
2502 break;
2503 }
2504
2505 switch (_IOC_DIR(cmd)) {
2506 case _IOC_NONE: dir = "--"; break;
2507 case _IOC_READ: dir = "r-"; break;
2508 case _IOC_WRITE: dir = "-w"; break;
2509 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
2510 default: dir = "*ERR*"; break;
2511 }
2512 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
2513 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
2514 }
2515 EXPORT_SYMBOL(v4l_printk_ioctl);
2516
2517 static long __video_do_ioctl(struct file *file,
2518 unsigned int cmd, void *arg)
2519 {
2520 struct video_device *vfd = video_devdata(file);
2521 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
2522 bool write_only = false;
2523 struct v4l2_ioctl_info default_info;
2524 const struct v4l2_ioctl_info *info;
2525 void *fh = file->private_data;
2526 struct v4l2_fh *vfh = NULL;
2527 int dev_debug = vfd->dev_debug;
2528 long ret = -ENOTTY;
2529
2530 if (ops == NULL) {
2531 pr_warn("%s: has no ioctl_ops.\n",
2532 video_device_node_name(vfd));
2533 return ret;
2534 }
2535
2536 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
2537 vfh = file->private_data;
2538
2539 if (v4l2_is_known_ioctl(cmd)) {
2540 info = &v4l2_ioctls[_IOC_NR(cmd)];
2541
2542 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) &&
2543 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
2544 goto done;
2545
2546 if (vfh && (info->flags & INFO_FL_PRIO)) {
2547 ret = v4l2_prio_check(vfd->prio, vfh->prio);
2548 if (ret)
2549 goto done;
2550 }
2551 } else {
2552 default_info.ioctl = cmd;
2553 default_info.flags = 0;
2554 default_info.debug = v4l_print_default;
2555 info = &default_info;
2556 }
2557
2558 write_only = _IOC_DIR(cmd) == _IOC_WRITE;
2559 if (info->flags & INFO_FL_STD) {
2560 typedef int (*vidioc_op)(struct file *file, void *fh, void *p);
2561 const void *p = vfd->ioctl_ops;
2562 const vidioc_op *vidioc = p + info->u.offset;
2563
2564 ret = (*vidioc)(file, fh, arg);
2565 } else if (info->flags & INFO_FL_FUNC) {
2566 ret = info->u.func(ops, file, fh, arg);
2567 } else if (!ops->vidioc_default) {
2568 ret = -ENOTTY;
2569 } else {
2570 ret = ops->vidioc_default(file, fh,
2571 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
2572 cmd, arg);
2573 }
2574
2575 done:
2576 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) {
2577 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) &&
2578 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF))
2579 return ret;
2580
2581 v4l_printk_ioctl(video_device_node_name(vfd), cmd);
2582 if (ret < 0)
2583 pr_cont(": error %ld", ret);
2584 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG))
2585 pr_cont("\n");
2586 else if (_IOC_DIR(cmd) == _IOC_NONE)
2587 info->debug(arg, write_only);
2588 else {
2589 pr_cont(": ");
2590 info->debug(arg, write_only);
2591 }
2592 }
2593
2594 return ret;
2595 }
2596
2597 static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
2598 void __user **user_ptr, void ***kernel_ptr)
2599 {
2600 int ret = 0;
2601
2602 switch (cmd) {
2603 case VIDIOC_PREPARE_BUF:
2604 case VIDIOC_QUERYBUF:
2605 case VIDIOC_QBUF:
2606 case VIDIOC_DQBUF: {
2607 struct v4l2_buffer *buf = parg;
2608
2609 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
2610 if (buf->length > VIDEO_MAX_PLANES) {
2611 ret = -EINVAL;
2612 break;
2613 }
2614 *user_ptr = (void __user *)buf->m.planes;
2615 *kernel_ptr = (void **)&buf->m.planes;
2616 *array_size = sizeof(struct v4l2_plane) * buf->length;
2617 ret = 1;
2618 }
2619 break;
2620 }
2621
2622 case VIDIOC_G_EDID:
2623 case VIDIOC_S_EDID: {
2624 struct v4l2_edid *edid = parg;
2625
2626 if (edid->blocks) {
2627 if (edid->blocks > 256) {
2628 ret = -EINVAL;
2629 break;
2630 }
2631 *user_ptr = (void __user *)edid->edid;
2632 *kernel_ptr = (void **)&edid->edid;
2633 *array_size = edid->blocks * 128;
2634 ret = 1;
2635 }
2636 break;
2637 }
2638
2639 case VIDIOC_S_EXT_CTRLS:
2640 case VIDIOC_G_EXT_CTRLS:
2641 case VIDIOC_TRY_EXT_CTRLS: {
2642 struct v4l2_ext_controls *ctrls = parg;
2643
2644 if (ctrls->count != 0) {
2645 if (ctrls->count > V4L2_CID_MAX_CTRLS) {
2646 ret = -EINVAL;
2647 break;
2648 }
2649 *user_ptr = (void __user *)ctrls->controls;
2650 *kernel_ptr = (void **)&ctrls->controls;
2651 *array_size = sizeof(struct v4l2_ext_control)
2652 * ctrls->count;
2653 ret = 1;
2654 }
2655 break;
2656 }
2657 }
2658
2659 return ret;
2660 }
2661
2662 long
2663 video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
2664 v4l2_kioctl func)
2665 {
2666 char sbuf[128];
2667 void *mbuf = NULL;
2668 void *parg = (void *)arg;
2669 long err = -EINVAL;
2670 bool has_array_args;
2671 size_t array_size = 0;
2672 void __user *user_ptr = NULL;
2673 void **kernel_ptr = NULL;
2674
2675 /* Copy arguments into temp kernel buffer */
2676 if (_IOC_DIR(cmd) != _IOC_NONE) {
2677 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
2678 parg = sbuf;
2679 } else {
2680 /* too big to allocate from stack */
2681 mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
2682 if (NULL == mbuf)
2683 return -ENOMEM;
2684 parg = mbuf;
2685 }
2686
2687 err = -EFAULT;
2688 if (_IOC_DIR(cmd) & _IOC_WRITE) {
2689 unsigned int n = _IOC_SIZE(cmd);
2690
2691 /*
2692 * In some cases, only a few fields are used as input,
2693 * i.e. when the app sets "index" and then the driver
2694 * fills in the rest of the structure for the thing
2695 * with that index. We only need to copy up the first
2696 * non-input field.
2697 */
2698 if (v4l2_is_known_ioctl(cmd)) {
2699 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags;
2700 if (flags & INFO_FL_CLEAR_MASK)
2701 n = (flags & INFO_FL_CLEAR_MASK) >> 16;
2702 }
2703
2704 if (copy_from_user(parg, (void __user *)arg, n))
2705 goto out;
2706
2707 /* zero out anything we don't copy from userspace */
2708 if (n < _IOC_SIZE(cmd))
2709 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n);
2710 } else {
2711 /* read-only ioctl */
2712 memset(parg, 0, _IOC_SIZE(cmd));
2713 }
2714 }
2715
2716 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
2717 if (err < 0)
2718 goto out;
2719 has_array_args = err;
2720
2721 if (has_array_args) {
2722 /*
2723 * When adding new types of array args, make sure that the
2724 * parent argument to ioctl (which contains the pointer to the
2725 * array) fits into sbuf (so that mbuf will still remain
2726 * unused up to here).
2727 */
2728 mbuf = kmalloc(array_size, GFP_KERNEL);
2729 err = -ENOMEM;
2730 if (NULL == mbuf)
2731 goto out_array_args;
2732 err = -EFAULT;
2733 if (copy_from_user(mbuf, user_ptr, array_size))
2734 goto out_array_args;
2735 *kernel_ptr = mbuf;
2736 }
2737
2738 /* Handles IOCTL */
2739 err = func(file, cmd, parg);
2740 if (err == -ENOIOCTLCMD)
2741 err = -ENOTTY;
2742 if (err == 0) {
2743 if (cmd == VIDIOC_DQBUF)
2744 trace_v4l2_dqbuf(video_devdata(file)->minor, parg);
2745 else if (cmd == VIDIOC_QBUF)
2746 trace_v4l2_qbuf(video_devdata(file)->minor, parg);
2747 }
2748
2749 if (has_array_args) {
2750 *kernel_ptr = (void __force *)user_ptr;
2751 if (copy_to_user(user_ptr, mbuf, array_size))
2752 err = -EFAULT;
2753 goto out_array_args;
2754 }
2755 /* VIDIOC_QUERY_DV_TIMINGS can return an error, but still have valid
2756 results that must be returned. */
2757 if (err < 0 && cmd != VIDIOC_QUERY_DV_TIMINGS)
2758 goto out;
2759
2760 out_array_args:
2761 /* Copy results into user buffer */
2762 switch (_IOC_DIR(cmd)) {
2763 case _IOC_READ:
2764 case (_IOC_WRITE | _IOC_READ):
2765 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
2766 err = -EFAULT;
2767 break;
2768 }
2769
2770 out:
2771 kfree(mbuf);
2772 return err;
2773 }
2774 EXPORT_SYMBOL(video_usercopy);
2775
2776 long video_ioctl2(struct file *file,
2777 unsigned int cmd, unsigned long arg)
2778 {
2779 return video_usercopy(file, cmd, arg, __video_do_ioctl);
2780 }
2781 EXPORT_SYMBOL(video_ioctl2);
Linux kernel - Deliverables
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