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[mirror_ubuntu-bionic-kernel.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_Y16_BE: descr = "16-bit Greyscale BE"; break;
1150 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break;
1151 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break;
1152 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break;
1153 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break;
1154 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break;
1155 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break;
1156 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break;
1157 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break;
1158 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break;
1159 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break;
1160 case V4L2_PIX_FMT_YUV422P: descr = "Planar YVU 4:2:2"; break;
1161 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break;
1162 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break;
1163 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break;
1164 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break;
1165 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break;
1166 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break;
1167 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break;
1168 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break;
1169 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break;
1170 case V4L2_PIX_FMT_HM12: descr = "YUV 4:2:0 (16x16 Macroblocks)"; break;
1171 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break;
1172 case V4L2_PIX_FMT_NV12: descr = "Y/CbCr 4:2:0"; break;
1173 case V4L2_PIX_FMT_NV21: descr = "Y/CrCb 4:2:0"; break;
1174 case V4L2_PIX_FMT_NV16: descr = "Y/CbCr 4:2:2"; break;
1175 case V4L2_PIX_FMT_NV61: descr = "Y/CrCb 4:2:2"; break;
1176 case V4L2_PIX_FMT_NV24: descr = "Y/CbCr 4:4:4"; break;
1177 case V4L2_PIX_FMT_NV42: descr = "Y/CrCb 4:4:4"; break;
1178 case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break;
1179 case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break;
1180 case V4L2_PIX_FMT_NV16M: descr = "Y/CbCr 4:2:2 (N-C)"; break;
1181 case V4L2_PIX_FMT_NV61M: descr = "Y/CrCb 4:2:2 (N-C)"; break;
1182 case V4L2_PIX_FMT_NV12MT: descr = "Y/CbCr 4:2:0 (64x32 MB, N-C)"; break;
1183 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/CbCr 4:2:0 (16x16 MB, N-C)"; break;
1184 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break;
1185 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break;
1186 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break;
1187 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break;
1188 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break;
1189 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break;
1190 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break;
1191 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break;
1192 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break;
1193 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break;
1194 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break;
1195 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break;
1196 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break;
1197 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break;
1198 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break;
1199 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break;
1200 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break;
1201 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break;
1202 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break;
1203 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break;
1204 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break;
1205 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break;
1206 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break;
1207 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break;
1208 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break;
1209 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break;
1210 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR (Exp.)"; break;
1211 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break;
1212 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break;
1213 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break;
1214 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break;
1215 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break;
1216 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break;
1217 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break;
1218 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break;
1219 case V4L2_SDR_FMT_CU8: descr = "Complex U8 (Emulated)"; break;
1220 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE (Emulated)"; break;
1221 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break;
1222 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break;
1223 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break;
1224
1225 default:
1226 /* Compressed formats */
1227 flags = V4L2_FMT_FLAG_COMPRESSED;
1228 switch (fmt->pixelformat) {
1229 /* Max description length mask: descr = "0123456789012345678901234567890" */
1230 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break;
1231 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break;
1232 case V4L2_PIX_FMT_DV: descr = "1394"; break;
1233 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break;
1234 case V4L2_PIX_FMT_H264: descr = "H.264"; break;
1235 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break;
1236 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break;
1237 case V4L2_PIX_FMT_H263: descr = "H.263"; break;
1238 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break;
1239 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break;
1240 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 part 2 ES"; break;
1241 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break;
1242 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break;
1243 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break;
1244 case V4L2_PIX_FMT_VP8: descr = "VP8"; break;
1245 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break;
1246 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break;
1247 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break;
1248 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break;
1249 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break;
1250 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break;
1251 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break;
1252 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break;
1253 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break;
1254 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break;
1255 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break;
1256 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break;
1257 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break;
1258 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break;
1259 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break;
1260 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break;
1261 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break;
1262 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break;
1263 default:
1264 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat);
1265 if (fmt->description[0])
1266 return;
1267 flags = 0;
1268 snprintf(fmt->description, sz, "%c%c%c%c%s",
1269 (char)(fmt->pixelformat & 0x7f),
1270 (char)((fmt->pixelformat >> 8) & 0x7f),
1271 (char)((fmt->pixelformat >> 16) & 0x7f),
1272 (char)((fmt->pixelformat >> 24) & 0x7f),
1273 (fmt->pixelformat & (1 << 31)) ? "-BE" : "");
1274 break;
1275 }
1276 }
1277
1278 if (descr)
1279 WARN_ON(strlcpy(fmt->description, descr, sz) >= sz);
1280 fmt->flags = flags;
1281 }
1282
1283 static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
1284 struct file *file, void *fh, void *arg)
1285 {
1286 struct v4l2_fmtdesc *p = arg;
1287 struct video_device *vfd = video_devdata(file);
1288 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1289 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
1290 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1291 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
1292 int ret = -EINVAL;
1293
1294 switch (p->type) {
1295 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1296 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_cap))
1297 break;
1298 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
1299 break;
1300 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1301 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_cap_mplane))
1302 break;
1303 ret = ops->vidioc_enum_fmt_vid_cap_mplane(file, fh, arg);
1304 break;
1305 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1306 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_overlay))
1307 break;
1308 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
1309 break;
1310 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1311 if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out))
1312 break;
1313 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg);
1314 break;
1315 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1316 if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out_mplane))
1317 break;
1318 ret = ops->vidioc_enum_fmt_vid_out_mplane(file, fh, arg);
1319 break;
1320 case V4L2_BUF_TYPE_SDR_CAPTURE:
1321 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_enum_fmt_sdr_cap))
1322 break;
1323 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg);
1324 break;
1325 }
1326 if (ret == 0)
1327 v4l_fill_fmtdesc(p);
1328 return ret;
1329 }
1330
1331 static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
1332 struct file *file, void *fh, void *arg)
1333 {
1334 struct v4l2_format *p = arg;
1335 struct video_device *vfd = video_devdata(file);
1336 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1337 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
1338 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1339 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
1340 int ret;
1341
1342 /*
1343 * fmt can't be cleared for these overlay types due to the 'clips'
1344 * 'clipcount' and 'bitmap' pointers in struct v4l2_window.
1345 * Those are provided by the user. So handle these two overlay types
1346 * first, and then just do a simple memset for the other types.
1347 */
1348 switch (p->type) {
1349 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1350 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: {
1351 struct v4l2_clip __user *clips = p->fmt.win.clips;
1352 u32 clipcount = p->fmt.win.clipcount;
1353 void __user *bitmap = p->fmt.win.bitmap;
1354
1355 memset(&p->fmt, 0, sizeof(p->fmt));
1356 p->fmt.win.clips = clips;
1357 p->fmt.win.clipcount = clipcount;
1358 p->fmt.win.bitmap = bitmap;
1359 break;
1360 }
1361 default:
1362 memset(&p->fmt, 0, sizeof(p->fmt));
1363 break;
1364 }
1365
1366 switch (p->type) {
1367 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1368 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap))
1369 break;
1370 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1371 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg);
1372 /* just in case the driver zeroed it again */
1373 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1374 return ret;
1375 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1376 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap_mplane))
1377 break;
1378 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
1379 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1380 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_overlay))
1381 break;
1382 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
1383 case V4L2_BUF_TYPE_VBI_CAPTURE:
1384 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_vbi_cap))
1385 break;
1386 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
1387 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1388 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_cap))
1389 break;
1390 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
1391 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1392 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out))
1393 break;
1394 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1395 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg);
1396 /* just in case the driver zeroed it again */
1397 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1398 return ret;
1399 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1400 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_mplane))
1401 break;
1402 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
1403 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1404 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_overlay))
1405 break;
1406 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
1407 case V4L2_BUF_TYPE_VBI_OUTPUT:
1408 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_vbi_out))
1409 break;
1410 return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
1411 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1412 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_out))
1413 break;
1414 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
1415 case V4L2_BUF_TYPE_SDR_CAPTURE:
1416 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_g_fmt_sdr_cap))
1417 break;
1418 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg);
1419 }
1420 return -EINVAL;
1421 }
1422
1423 static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
1424 struct file *file, void *fh, void *arg)
1425 {
1426 struct v4l2_format *p = arg;
1427 struct video_device *vfd = video_devdata(file);
1428 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1429 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
1430 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1431 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
1432 int ret;
1433
1434 v4l_sanitize_format(p);
1435
1436 switch (p->type) {
1437 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1438 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap))
1439 break;
1440 CLEAR_AFTER_FIELD(p, fmt.pix);
1441 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg);
1442 /* just in case the driver zeroed it again */
1443 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1444 return ret;
1445 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1446 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap_mplane))
1447 break;
1448 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1449 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
1450 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1451 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_overlay))
1452 break;
1453 CLEAR_AFTER_FIELD(p, fmt.win);
1454 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
1455 case V4L2_BUF_TYPE_VBI_CAPTURE:
1456 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_vbi_cap))
1457 break;
1458 CLEAR_AFTER_FIELD(p, fmt.vbi);
1459 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
1460 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1461 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_cap))
1462 break;
1463 CLEAR_AFTER_FIELD(p, fmt.sliced);
1464 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
1465 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1466 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out))
1467 break;
1468 CLEAR_AFTER_FIELD(p, fmt.pix);
1469 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg);
1470 /* just in case the driver zeroed it again */
1471 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1472 return ret;
1473 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1474 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_mplane))
1475 break;
1476 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1477 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
1478 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1479 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_overlay))
1480 break;
1481 CLEAR_AFTER_FIELD(p, fmt.win);
1482 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
1483 case V4L2_BUF_TYPE_VBI_OUTPUT:
1484 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_vbi_out))
1485 break;
1486 CLEAR_AFTER_FIELD(p, fmt.vbi);
1487 return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
1488 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1489 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_out))
1490 break;
1491 CLEAR_AFTER_FIELD(p, fmt.sliced);
1492 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
1493 case V4L2_BUF_TYPE_SDR_CAPTURE:
1494 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_s_fmt_sdr_cap))
1495 break;
1496 CLEAR_AFTER_FIELD(p, fmt.sdr);
1497 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg);
1498 }
1499 return -EINVAL;
1500 }
1501
1502 static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
1503 struct file *file, void *fh, void *arg)
1504 {
1505 struct v4l2_format *p = arg;
1506 struct video_device *vfd = video_devdata(file);
1507 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1508 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
1509 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1510 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
1511 int ret;
1512
1513 v4l_sanitize_format(p);
1514
1515 switch (p->type) {
1516 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1517 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap))
1518 break;
1519 CLEAR_AFTER_FIELD(p, fmt.pix);
1520 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg);
1521 /* just in case the driver zeroed it again */
1522 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1523 return ret;
1524 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1525 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap_mplane))
1526 break;
1527 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1528 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
1529 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1530 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_overlay))
1531 break;
1532 CLEAR_AFTER_FIELD(p, fmt.win);
1533 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
1534 case V4L2_BUF_TYPE_VBI_CAPTURE:
1535 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_vbi_cap))
1536 break;
1537 CLEAR_AFTER_FIELD(p, fmt.vbi);
1538 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
1539 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1540 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_cap))
1541 break;
1542 CLEAR_AFTER_FIELD(p, fmt.sliced);
1543 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
1544 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1545 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out))
1546 break;
1547 CLEAR_AFTER_FIELD(p, fmt.pix);
1548 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg);
1549 /* just in case the driver zeroed it again */
1550 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1551 return ret;
1552 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1553 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_mplane))
1554 break;
1555 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1556 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
1557 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1558 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_overlay))
1559 break;
1560 CLEAR_AFTER_FIELD(p, fmt.win);
1561 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
1562 case V4L2_BUF_TYPE_VBI_OUTPUT:
1563 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_vbi_out))
1564 break;
1565 CLEAR_AFTER_FIELD(p, fmt.vbi);
1566 return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
1567 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1568 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_out))
1569 break;
1570 CLEAR_AFTER_FIELD(p, fmt.sliced);
1571 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
1572 case V4L2_BUF_TYPE_SDR_CAPTURE:
1573 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_try_fmt_sdr_cap))
1574 break;
1575 CLEAR_AFTER_FIELD(p, fmt.sdr);
1576 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg);
1577 }
1578 return -EINVAL;
1579 }
1580
1581 static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
1582 struct file *file, void *fh, void *arg)
1583 {
1584 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
1585 }
1586
1587 static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
1588 struct file *file, void *fh, void *arg)
1589 {
1590 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
1591 }
1592
1593 static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,
1594 struct file *file, void *fh, void *arg)
1595 {
1596 struct video_device *vfd = video_devdata(file);
1597 struct v4l2_tuner *p = arg;
1598 int err;
1599
1600 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1601 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1602 err = ops->vidioc_g_tuner(file, fh, p);
1603 if (!err)
1604 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1605 return err;
1606 }
1607
1608 static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
1609 struct file *file, void *fh, void *arg)
1610 {
1611 struct video_device *vfd = video_devdata(file);
1612 struct v4l2_tuner *p = arg;
1613
1614 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1615 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1616 return ops->vidioc_s_tuner(file, fh, p);
1617 }
1618
1619 static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,
1620 struct file *file, void *fh, void *arg)
1621 {
1622 struct v4l2_modulator *p = arg;
1623 int err;
1624
1625 err = ops->vidioc_g_modulator(file, fh, p);
1626 if (!err)
1627 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1628 return err;
1629 }
1630
1631 static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
1632 struct file *file, void *fh, void *arg)
1633 {
1634 struct video_device *vfd = video_devdata(file);
1635 struct v4l2_frequency *p = arg;
1636
1637 if (vfd->vfl_type == VFL_TYPE_SDR)
1638 p->type = V4L2_TUNER_ADC;
1639 else
1640 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1641 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1642 return ops->vidioc_g_frequency(file, fh, p);
1643 }
1644
1645 static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
1646 struct file *file, void *fh, void *arg)
1647 {
1648 struct video_device *vfd = video_devdata(file);
1649 const struct v4l2_frequency *p = arg;
1650 enum v4l2_tuner_type type;
1651
1652 if (vfd->vfl_type == VFL_TYPE_SDR) {
1653 if (p->type != V4L2_TUNER_ADC && p->type != V4L2_TUNER_RF)
1654 return -EINVAL;
1655 } else {
1656 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1657 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1658 if (type != p->type)
1659 return -EINVAL;
1660 }
1661 return ops->vidioc_s_frequency(file, fh, p);
1662 }
1663
1664 static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
1665 struct file *file, void *fh, void *arg)
1666 {
1667 struct video_device *vfd = video_devdata(file);
1668 struct v4l2_standard *p = arg;
1669 v4l2_std_id id = vfd->tvnorms, curr_id = 0;
1670 unsigned int index = p->index, i, j = 0;
1671 const char *descr = "";
1672
1673 /* Return -ENODATA if the tvnorms for the current input
1674 or output is 0, meaning that it doesn't support this API. */
1675 if (id == 0)
1676 return -ENODATA;
1677
1678 /* Return norm array in a canonical way */
1679 for (i = 0; i <= index && id; i++) {
1680 /* last std value in the standards array is 0, so this
1681 while always ends there since (id & 0) == 0. */
1682 while ((id & standards[j].std) != standards[j].std)
1683 j++;
1684 curr_id = standards[j].std;
1685 descr = standards[j].descr;
1686 j++;
1687 if (curr_id == 0)
1688 break;
1689 if (curr_id != V4L2_STD_PAL &&
1690 curr_id != V4L2_STD_SECAM &&
1691 curr_id != V4L2_STD_NTSC)
1692 id &= ~curr_id;
1693 }
1694 if (i <= index)
1695 return -EINVAL;
1696
1697 v4l2_video_std_construct(p, curr_id, descr);
1698 return 0;
1699 }
1700
1701 static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
1702 struct file *file, void *fh, void *arg)
1703 {
1704 struct video_device *vfd = video_devdata(file);
1705 v4l2_std_id id = *(v4l2_std_id *)arg, norm;
1706
1707 norm = id & vfd->tvnorms;
1708 if (vfd->tvnorms && !norm) /* Check if std is supported */
1709 return -EINVAL;
1710
1711 /* Calls the specific handler */
1712 return ops->vidioc_s_std(file, fh, norm);
1713 }
1714
1715 static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
1716 struct file *file, void *fh, void *arg)
1717 {
1718 struct video_device *vfd = video_devdata(file);
1719 v4l2_std_id *p = arg;
1720
1721 /*
1722 * If no signal is detected, then the driver should return
1723 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with
1724 * any standards that do not apply removed.
1725 *
1726 * This means that tuners, audio and video decoders can join
1727 * their efforts to improve the standards detection.
1728 */
1729 *p = vfd->tvnorms;
1730 return ops->vidioc_querystd(file, fh, arg);
1731 }
1732
1733 static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
1734 struct file *file, void *fh, void *arg)
1735 {
1736 struct video_device *vfd = video_devdata(file);
1737 struct v4l2_hw_freq_seek *p = arg;
1738 enum v4l2_tuner_type type;
1739
1740 /* s_hw_freq_seek is not supported for SDR for now */
1741 if (vfd->vfl_type == VFL_TYPE_SDR)
1742 return -EINVAL;
1743
1744 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1745 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1746 if (p->type != type)
1747 return -EINVAL;
1748 return ops->vidioc_s_hw_freq_seek(file, fh, p);
1749 }
1750
1751 static int v4l_overlay(const struct v4l2_ioctl_ops *ops,
1752 struct file *file, void *fh, void *arg)
1753 {
1754 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg);
1755 }
1756
1757 static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,
1758 struct file *file, void *fh, void *arg)
1759 {
1760 struct v4l2_requestbuffers *p = arg;
1761 int ret = check_fmt(file, p->type);
1762
1763 if (ret)
1764 return ret;
1765
1766 CLEAR_AFTER_FIELD(p, memory);
1767
1768 return ops->vidioc_reqbufs(file, fh, p);
1769 }
1770
1771 static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,
1772 struct file *file, void *fh, void *arg)
1773 {
1774 struct v4l2_buffer *p = arg;
1775 int ret = check_fmt(file, p->type);
1776
1777 return ret ? ret : ops->vidioc_querybuf(file, fh, p);
1778 }
1779
1780 static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,
1781 struct file *file, void *fh, void *arg)
1782 {
1783 struct v4l2_buffer *p = arg;
1784 int ret = check_fmt(file, p->type);
1785
1786 return ret ? ret : ops->vidioc_qbuf(file, fh, p);
1787 }
1788
1789 static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,
1790 struct file *file, void *fh, void *arg)
1791 {
1792 struct v4l2_buffer *p = arg;
1793 int ret = check_fmt(file, p->type);
1794
1795 return ret ? ret : ops->vidioc_dqbuf(file, fh, p);
1796 }
1797
1798 static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
1799 struct file *file, void *fh, void *arg)
1800 {
1801 struct v4l2_create_buffers *create = arg;
1802 int ret = check_fmt(file, create->format.type);
1803
1804 if (ret)
1805 return ret;
1806
1807 v4l_sanitize_format(&create->format);
1808
1809 ret = ops->vidioc_create_bufs(file, fh, create);
1810
1811 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1812 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1813 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1814
1815 return ret;
1816 }
1817
1818 static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
1819 struct file *file, void *fh, void *arg)
1820 {
1821 struct v4l2_buffer *b = arg;
1822 int ret = check_fmt(file, b->type);
1823
1824 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
1825 }
1826
1827 static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
1828 struct file *file, void *fh, void *arg)
1829 {
1830 struct v4l2_streamparm *p = arg;
1831 v4l2_std_id std;
1832 int ret = check_fmt(file, p->type);
1833
1834 if (ret)
1835 return ret;
1836 if (ops->vidioc_g_parm)
1837 return ops->vidioc_g_parm(file, fh, p);
1838 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1839 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1840 return -EINVAL;
1841 p->parm.capture.readbuffers = 2;
1842 ret = ops->vidioc_g_std(file, fh, &std);
1843 if (ret == 0)
1844 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe);
1845 return ret;
1846 }
1847
1848 static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
1849 struct file *file, void *fh, void *arg)
1850 {
1851 struct v4l2_streamparm *p = arg;
1852 int ret = check_fmt(file, p->type);
1853
1854 return ret ? ret : ops->vidioc_s_parm(file, fh, p);
1855 }
1856
1857 static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,
1858 struct file *file, void *fh, void *arg)
1859 {
1860 struct video_device *vfd = video_devdata(file);
1861 struct v4l2_queryctrl *p = arg;
1862 struct v4l2_fh *vfh =
1863 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1864
1865 if (vfh && vfh->ctrl_handler)
1866 return v4l2_queryctrl(vfh->ctrl_handler, p);
1867 if (vfd->ctrl_handler)
1868 return v4l2_queryctrl(vfd->ctrl_handler, p);
1869 if (ops->vidioc_queryctrl)
1870 return ops->vidioc_queryctrl(file, fh, p);
1871 return -ENOTTY;
1872 }
1873
1874 static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops,
1875 struct file *file, void *fh, void *arg)
1876 {
1877 struct video_device *vfd = video_devdata(file);
1878 struct v4l2_query_ext_ctrl *p = arg;
1879 struct v4l2_fh *vfh =
1880 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1881
1882 if (vfh && vfh->ctrl_handler)
1883 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p);
1884 if (vfd->ctrl_handler)
1885 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p);
1886 if (ops->vidioc_query_ext_ctrl)
1887 return ops->vidioc_query_ext_ctrl(file, fh, p);
1888 return -ENOTTY;
1889 }
1890
1891 static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,
1892 struct file *file, void *fh, void *arg)
1893 {
1894 struct video_device *vfd = video_devdata(file);
1895 struct v4l2_querymenu *p = arg;
1896 struct v4l2_fh *vfh =
1897 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1898
1899 if (vfh && vfh->ctrl_handler)
1900 return v4l2_querymenu(vfh->ctrl_handler, p);
1901 if (vfd->ctrl_handler)
1902 return v4l2_querymenu(vfd->ctrl_handler, p);
1903 if (ops->vidioc_querymenu)
1904 return ops->vidioc_querymenu(file, fh, p);
1905 return -ENOTTY;
1906 }
1907
1908 static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops,
1909 struct file *file, void *fh, void *arg)
1910 {
1911 struct video_device *vfd = video_devdata(file);
1912 struct v4l2_control *p = arg;
1913 struct v4l2_fh *vfh =
1914 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1915 struct v4l2_ext_controls ctrls;
1916 struct v4l2_ext_control ctrl;
1917
1918 if (vfh && vfh->ctrl_handler)
1919 return v4l2_g_ctrl(vfh->ctrl_handler, p);
1920 if (vfd->ctrl_handler)
1921 return v4l2_g_ctrl(vfd->ctrl_handler, p);
1922 if (ops->vidioc_g_ctrl)
1923 return ops->vidioc_g_ctrl(file, fh, p);
1924 if (ops->vidioc_g_ext_ctrls == NULL)
1925 return -ENOTTY;
1926
1927 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1928 ctrls.count = 1;
1929 ctrls.controls = &ctrl;
1930 ctrl.id = p->id;
1931 ctrl.value = p->value;
1932 if (check_ext_ctrls(&ctrls, 1)) {
1933 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
1934
1935 if (ret == 0)
1936 p->value = ctrl.value;
1937 return ret;
1938 }
1939 return -EINVAL;
1940 }
1941
1942 static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,
1943 struct file *file, void *fh, void *arg)
1944 {
1945 struct video_device *vfd = video_devdata(file);
1946 struct v4l2_control *p = arg;
1947 struct v4l2_fh *vfh =
1948 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1949 struct v4l2_ext_controls ctrls;
1950 struct v4l2_ext_control ctrl;
1951
1952 if (vfh && vfh->ctrl_handler)
1953 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
1954 if (vfd->ctrl_handler)
1955 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
1956 if (ops->vidioc_s_ctrl)
1957 return ops->vidioc_s_ctrl(file, fh, p);
1958 if (ops->vidioc_s_ext_ctrls == NULL)
1959 return -ENOTTY;
1960
1961 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1962 ctrls.count = 1;
1963 ctrls.controls = &ctrl;
1964 ctrl.id = p->id;
1965 ctrl.value = p->value;
1966 if (check_ext_ctrls(&ctrls, 1))
1967 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
1968 return -EINVAL;
1969 }
1970
1971 static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1972 struct file *file, void *fh, void *arg)
1973 {
1974 struct video_device *vfd = video_devdata(file);
1975 struct v4l2_ext_controls *p = arg;
1976 struct v4l2_fh *vfh =
1977 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1978
1979 p->error_idx = p->count;
1980 if (vfh && vfh->ctrl_handler)
1981 return v4l2_g_ext_ctrls(vfh->ctrl_handler, p);
1982 if (vfd->ctrl_handler)
1983 return v4l2_g_ext_ctrls(vfd->ctrl_handler, p);
1984 if (ops->vidioc_g_ext_ctrls == NULL)
1985 return -ENOTTY;
1986 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :
1987 -EINVAL;
1988 }
1989
1990 static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1991 struct file *file, void *fh, void *arg)
1992 {
1993 struct video_device *vfd = video_devdata(file);
1994 struct v4l2_ext_controls *p = arg;
1995 struct v4l2_fh *vfh =
1996 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1997
1998 p->error_idx = p->count;
1999 if (vfh && vfh->ctrl_handler)
2000 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, p);
2001 if (vfd->ctrl_handler)
2002 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, p);
2003 if (ops->vidioc_s_ext_ctrls == NULL)
2004 return -ENOTTY;
2005 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :
2006 -EINVAL;
2007 }
2008
2009 static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2010 struct file *file, void *fh, void *arg)
2011 {
2012 struct video_device *vfd = video_devdata(file);
2013 struct v4l2_ext_controls *p = arg;
2014 struct v4l2_fh *vfh =
2015 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2016
2017 p->error_idx = p->count;
2018 if (vfh && vfh->ctrl_handler)
2019 return v4l2_try_ext_ctrls(vfh->ctrl_handler, p);
2020 if (vfd->ctrl_handler)
2021 return v4l2_try_ext_ctrls(vfd->ctrl_handler, p);
2022 if (ops->vidioc_try_ext_ctrls == NULL)
2023 return -ENOTTY;
2024 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :
2025 -EINVAL;
2026 }
2027
2028 static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
2029 struct file *file, void *fh, void *arg)
2030 {
2031 struct v4l2_crop *p = arg;
2032 struct v4l2_selection s = {
2033 .type = p->type,
2034 };
2035 int ret;
2036
2037 if (ops->vidioc_g_crop)
2038 return ops->vidioc_g_crop(file, fh, p);
2039 /* simulate capture crop using selection api */
2040
2041 /* crop means compose for output devices */
2042 if (V4L2_TYPE_IS_OUTPUT(p->type))
2043 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
2044 else
2045 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
2046
2047 ret = ops->vidioc_g_selection(file, fh, &s);
2048
2049 /* copying results to old structure on success */
2050 if (!ret)
2051 p->c = s.r;
2052 return ret;
2053 }
2054
2055 static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
2056 struct file *file, void *fh, void *arg)
2057 {
2058 struct v4l2_crop *p = arg;
2059 struct v4l2_selection s = {
2060 .type = p->type,
2061 .r = p->c,
2062 };
2063
2064 if (ops->vidioc_s_crop)
2065 return ops->vidioc_s_crop(file, fh, p);
2066 /* simulate capture crop using selection api */
2067
2068 /* crop means compose for output devices */
2069 if (V4L2_TYPE_IS_OUTPUT(p->type))
2070 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
2071 else
2072 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
2073
2074 return ops->vidioc_s_selection(file, fh, &s);
2075 }
2076
2077 static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
2078 struct file *file, void *fh, void *arg)
2079 {
2080 struct v4l2_cropcap *p = arg;
2081
2082 if (ops->vidioc_g_selection) {
2083 struct v4l2_selection s = { .type = p->type };
2084 int ret;
2085
2086 /* obtaining bounds */
2087 if (V4L2_TYPE_IS_OUTPUT(p->type))
2088 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
2089 else
2090 s.target = V4L2_SEL_TGT_CROP_BOUNDS;
2091
2092 ret = ops->vidioc_g_selection(file, fh, &s);
2093 if (ret)
2094 return ret;
2095 p->bounds = s.r;
2096
2097 /* obtaining defrect */
2098 if (V4L2_TYPE_IS_OUTPUT(p->type))
2099 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
2100 else
2101 s.target = V4L2_SEL_TGT_CROP_DEFAULT;
2102
2103 ret = ops->vidioc_g_selection(file, fh, &s);
2104 if (ret)
2105 return ret;
2106 p->defrect = s.r;
2107 }
2108
2109 /* setting trivial pixelaspect */
2110 p->pixelaspect.numerator = 1;
2111 p->pixelaspect.denominator = 1;
2112
2113 if (ops->vidioc_cropcap)
2114 return ops->vidioc_cropcap(file, fh, p);
2115
2116 return 0;
2117 }
2118
2119 static int v4l_log_status(const struct v4l2_ioctl_ops *ops,
2120 struct file *file, void *fh, void *arg)
2121 {
2122 struct video_device *vfd = video_devdata(file);
2123 int ret;
2124
2125 if (vfd->v4l2_dev)
2126 pr_info("%s: ================= START STATUS =================\n",
2127 vfd->v4l2_dev->name);
2128 ret = ops->vidioc_log_status(file, fh);
2129 if (vfd->v4l2_dev)
2130 pr_info("%s: ================== END STATUS ==================\n",
2131 vfd->v4l2_dev->name);
2132 return ret;
2133 }
2134
2135 static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
2136 struct file *file, void *fh, void *arg)
2137 {
2138 #ifdef CONFIG_VIDEO_ADV_DEBUG
2139 struct v4l2_dbg_register *p = arg;
2140 struct video_device *vfd = video_devdata(file);
2141 struct v4l2_subdev *sd;
2142 int idx = 0;
2143
2144 if (!capable(CAP_SYS_ADMIN))
2145 return -EPERM;
2146 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2147 if (vfd->v4l2_dev == NULL)
2148 return -EINVAL;
2149 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2150 if (p->match.addr == idx++)
2151 return v4l2_subdev_call(sd, core, g_register, p);
2152 return -EINVAL;
2153 }
2154 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2155 (ops->vidioc_g_chip_info || p->match.addr == 0))
2156 return ops->vidioc_g_register(file, fh, p);
2157 return -EINVAL;
2158 #else
2159 return -ENOTTY;
2160 #endif
2161 }
2162
2163 static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
2164 struct file *file, void *fh, void *arg)
2165 {
2166 #ifdef CONFIG_VIDEO_ADV_DEBUG
2167 const struct v4l2_dbg_register *p = arg;
2168 struct video_device *vfd = video_devdata(file);
2169 struct v4l2_subdev *sd;
2170 int idx = 0;
2171
2172 if (!capable(CAP_SYS_ADMIN))
2173 return -EPERM;
2174 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2175 if (vfd->v4l2_dev == NULL)
2176 return -EINVAL;
2177 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2178 if (p->match.addr == idx++)
2179 return v4l2_subdev_call(sd, core, s_register, p);
2180 return -EINVAL;
2181 }
2182 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2183 (ops->vidioc_g_chip_info || p->match.addr == 0))
2184 return ops->vidioc_s_register(file, fh, p);
2185 return -EINVAL;
2186 #else
2187 return -ENOTTY;
2188 #endif
2189 }
2190
2191 static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,
2192 struct file *file, void *fh, void *arg)
2193 {
2194 #ifdef CONFIG_VIDEO_ADV_DEBUG
2195 struct video_device *vfd = video_devdata(file);
2196 struct v4l2_dbg_chip_info *p = arg;
2197 struct v4l2_subdev *sd;
2198 int idx = 0;
2199
2200 switch (p->match.type) {
2201 case V4L2_CHIP_MATCH_BRIDGE:
2202 if (ops->vidioc_s_register)
2203 p->flags |= V4L2_CHIP_FL_WRITABLE;
2204 if (ops->vidioc_g_register)
2205 p->flags |= V4L2_CHIP_FL_READABLE;
2206 strlcpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));
2207 if (ops->vidioc_g_chip_info)
2208 return ops->vidioc_g_chip_info(file, fh, arg);
2209 if (p->match.addr)
2210 return -EINVAL;
2211 return 0;
2212
2213 case V4L2_CHIP_MATCH_SUBDEV:
2214 if (vfd->v4l2_dev == NULL)
2215 break;
2216 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {
2217 if (p->match.addr != idx++)
2218 continue;
2219 if (sd->ops->core && sd->ops->core->s_register)
2220 p->flags |= V4L2_CHIP_FL_WRITABLE;
2221 if (sd->ops->core && sd->ops->core->g_register)
2222 p->flags |= V4L2_CHIP_FL_READABLE;
2223 strlcpy(p->name, sd->name, sizeof(p->name));
2224 return 0;
2225 }
2226 break;
2227 }
2228 return -EINVAL;
2229 #else
2230 return -ENOTTY;
2231 #endif
2232 }
2233
2234 static int v4l_dqevent(const struct v4l2_ioctl_ops *ops,
2235 struct file *file, void *fh, void *arg)
2236 {
2237 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK);
2238 }
2239
2240 static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,
2241 struct file *file, void *fh, void *arg)
2242 {
2243 return ops->vidioc_subscribe_event(fh, arg);
2244 }
2245
2246 static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,
2247 struct file *file, void *fh, void *arg)
2248 {
2249 return ops->vidioc_unsubscribe_event(fh, arg);
2250 }
2251
2252 static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,
2253 struct file *file, void *fh, void *arg)
2254 {
2255 struct v4l2_sliced_vbi_cap *p = arg;
2256 int ret = check_fmt(file, p->type);
2257
2258 if (ret)
2259 return ret;
2260
2261 /* Clear up to type, everything after type is zeroed already */
2262 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
2263
2264 return ops->vidioc_g_sliced_vbi_cap(file, fh, p);
2265 }
2266
2267 static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
2268 struct file *file, void *fh, void *arg)
2269 {
2270 struct video_device *vfd = video_devdata(file);
2271 struct v4l2_frequency_band *p = arg;
2272 enum v4l2_tuner_type type;
2273 int err;
2274
2275 if (vfd->vfl_type == VFL_TYPE_SDR) {
2276 if (p->type != V4L2_TUNER_ADC && p->type != V4L2_TUNER_RF)
2277 return -EINVAL;
2278 type = p->type;
2279 } else {
2280 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2281 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2282 if (type != p->type)
2283 return -EINVAL;
2284 }
2285 if (ops->vidioc_enum_freq_bands) {
2286 err = ops->vidioc_enum_freq_bands(file, fh, p);
2287 if (err != -ENOTTY)
2288 return err;
2289 }
2290 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) {
2291 struct v4l2_tuner t = {
2292 .index = p->tuner,
2293 .type = type,
2294 };
2295
2296 if (p->index)
2297 return -EINVAL;
2298 err = ops->vidioc_g_tuner(file, fh, &t);
2299 if (err)
2300 return err;
2301 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2302 p->rangelow = t.rangelow;
2303 p->rangehigh = t.rangehigh;
2304 p->modulation = (type == V4L2_TUNER_RADIO) ?
2305 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2306 return 0;
2307 }
2308 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) {
2309 struct v4l2_modulator m = {
2310 .index = p->tuner,
2311 };
2312
2313 if (type != V4L2_TUNER_RADIO)
2314 return -EINVAL;
2315 if (p->index)
2316 return -EINVAL;
2317 err = ops->vidioc_g_modulator(file, fh, &m);
2318 if (err)
2319 return err;
2320 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2321 p->rangelow = m.rangelow;
2322 p->rangehigh = m.rangehigh;
2323 p->modulation = (type == V4L2_TUNER_RADIO) ?
2324 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2325 return 0;
2326 }
2327 return -ENOTTY;
2328 }
2329
2330 struct v4l2_ioctl_info {
2331 unsigned int ioctl;
2332 u32 flags;
2333 const char * const name;
2334 union {
2335 u32 offset;
2336 int (*func)(const struct v4l2_ioctl_ops *ops,
2337 struct file *file, void *fh, void *p);
2338 } u;
2339 void (*debug)(const void *arg, bool write_only);
2340 };
2341
2342 /* This control needs a priority check */
2343 #define INFO_FL_PRIO (1 << 0)
2344 /* This control can be valid if the filehandle passes a control handler. */
2345 #define INFO_FL_CTRL (1 << 1)
2346 /* This is a standard ioctl, no need for special code */
2347 #define INFO_FL_STD (1 << 2)
2348 /* This is ioctl has its own function */
2349 #define INFO_FL_FUNC (1 << 3)
2350 /* Queuing ioctl */
2351 #define INFO_FL_QUEUE (1 << 4)
2352 /* Zero struct from after the field to the end */
2353 #define INFO_FL_CLEAR(v4l2_struct, field) \
2354 ((offsetof(struct v4l2_struct, field) + \
2355 sizeof(((struct v4l2_struct *)0)->field)) << 16)
2356 #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
2357
2358 #define IOCTL_INFO_STD(_ioctl, _vidioc, _debug, _flags) \
2359 [_IOC_NR(_ioctl)] = { \
2360 .ioctl = _ioctl, \
2361 .flags = _flags | INFO_FL_STD, \
2362 .name = #_ioctl, \
2363 .u.offset = offsetof(struct v4l2_ioctl_ops, _vidioc), \
2364 .debug = _debug, \
2365 }
2366
2367 #define IOCTL_INFO_FNC(_ioctl, _func, _debug, _flags) \
2368 [_IOC_NR(_ioctl)] = { \
2369 .ioctl = _ioctl, \
2370 .flags = _flags | INFO_FL_FUNC, \
2371 .name = #_ioctl, \
2372 .u.func = _func, \
2373 .debug = _debug, \
2374 }
2375
2376 static struct v4l2_ioctl_info v4l2_ioctls[] = {
2377 IOCTL_INFO_FNC(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
2378 IOCTL_INFO_FNC(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)),
2379 IOCTL_INFO_FNC(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0),
2380 IOCTL_INFO_FNC(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
2381 IOCTL_INFO_FNC(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2382 IOCTL_INFO_FNC(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
2383 IOCTL_INFO_STD(VIDIOC_G_FBUF, vidioc_g_fbuf, v4l_print_framebuffer, 0),
2384 IOCTL_INFO_STD(VIDIOC_S_FBUF, vidioc_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
2385 IOCTL_INFO_FNC(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO),
2386 IOCTL_INFO_FNC(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),
2387 IOCTL_INFO_STD(VIDIOC_EXPBUF, vidioc_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)),
2388 IOCTL_INFO_FNC(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),
2389 IOCTL_INFO_FNC(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2390 IOCTL_INFO_FNC(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2391 IOCTL_INFO_FNC(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
2392 IOCTL_INFO_FNC(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
2393 IOCTL_INFO_STD(VIDIOC_G_STD, vidioc_g_std, v4l_print_std, 0),
2394 IOCTL_INFO_FNC(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
2395 IOCTL_INFO_FNC(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
2396 IOCTL_INFO_FNC(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
2397 IOCTL_INFO_FNC(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
2398 IOCTL_INFO_FNC(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
2399 IOCTL_INFO_FNC(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
2400 IOCTL_INFO_FNC(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
2401 IOCTL_INFO_STD(VIDIOC_G_AUDIO, vidioc_g_audio, v4l_print_audio, 0),
2402 IOCTL_INFO_STD(VIDIOC_S_AUDIO, vidioc_s_audio, v4l_print_audio, INFO_FL_PRIO),
2403 IOCTL_INFO_FNC(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
2404 IOCTL_INFO_FNC(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
2405 IOCTL_INFO_STD(VIDIOC_G_INPUT, vidioc_g_input, v4l_print_u32, 0),
2406 IOCTL_INFO_FNC(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
2407 IOCTL_INFO_STD(VIDIOC_G_EDID, vidioc_g_edid, v4l_print_edid, 0),
2408 IOCTL_INFO_STD(VIDIOC_S_EDID, vidioc_s_edid, v4l_print_edid, INFO_FL_PRIO),
2409 IOCTL_INFO_STD(VIDIOC_G_OUTPUT, vidioc_g_output, v4l_print_u32, 0),
2410 IOCTL_INFO_FNC(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
2411 IOCTL_INFO_FNC(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
2412 IOCTL_INFO_STD(VIDIOC_G_AUDOUT, vidioc_g_audout, v4l_print_audioout, 0),
2413 IOCTL_INFO_STD(VIDIOC_S_AUDOUT, vidioc_s_audout, v4l_print_audioout, INFO_FL_PRIO),
2414 IOCTL_INFO_FNC(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
2415 IOCTL_INFO_STD(VIDIOC_S_MODULATOR, vidioc_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
2416 IOCTL_INFO_FNC(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
2417 IOCTL_INFO_FNC(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
2418 IOCTL_INFO_FNC(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
2419 IOCTL_INFO_FNC(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
2420 IOCTL_INFO_FNC(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
2421 IOCTL_INFO_STD(VIDIOC_G_SELECTION, vidioc_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)),
2422 IOCTL_INFO_STD(VIDIOC_S_SELECTION, vidioc_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)),
2423 IOCTL_INFO_STD(VIDIOC_G_JPEGCOMP, vidioc_g_jpegcomp, v4l_print_jpegcompression, 0),
2424 IOCTL_INFO_STD(VIDIOC_S_JPEGCOMP, vidioc_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
2425 IOCTL_INFO_FNC(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
2426 IOCTL_INFO_FNC(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
2427 IOCTL_INFO_STD(VIDIOC_ENUMAUDIO, vidioc_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
2428 IOCTL_INFO_STD(VIDIOC_ENUMAUDOUT, vidioc_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
2429 IOCTL_INFO_FNC(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
2430 IOCTL_INFO_FNC(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
2431 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)),
2432 IOCTL_INFO_FNC(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
2433 IOCTL_INFO_FNC(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2434 IOCTL_INFO_FNC(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL),
2435 IOCTL_INFO_FNC(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2436 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMESIZES, vidioc_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
2437 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMEINTERVALS, vidioc_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
2438 IOCTL_INFO_STD(VIDIOC_G_ENC_INDEX, vidioc_g_enc_index, v4l_print_enc_idx, 0),
2439 IOCTL_INFO_STD(VIDIOC_ENCODER_CMD, vidioc_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2440 IOCTL_INFO_STD(VIDIOC_TRY_ENCODER_CMD, vidioc_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2441 IOCTL_INFO_STD(VIDIOC_DECODER_CMD, vidioc_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
2442 IOCTL_INFO_STD(VIDIOC_TRY_DECODER_CMD, vidioc_try_decoder_cmd, v4l_print_decoder_cmd, 0),
2443 IOCTL_INFO_FNC(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
2444 IOCTL_INFO_FNC(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
2445 IOCTL_INFO_FNC(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
2446 IOCTL_INFO_STD(VIDIOC_S_DV_TIMINGS, vidioc_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO),
2447 IOCTL_INFO_STD(VIDIOC_G_DV_TIMINGS, vidioc_g_dv_timings, v4l_print_dv_timings, 0),
2448 IOCTL_INFO_FNC(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
2449 IOCTL_INFO_FNC(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
2450 IOCTL_INFO_FNC(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
2451 IOCTL_INFO_FNC(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2452 IOCTL_INFO_FNC(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
2453 IOCTL_INFO_STD(VIDIOC_ENUM_DV_TIMINGS, vidioc_enum_dv_timings, v4l_print_enum_dv_timings, 0),
2454 IOCTL_INFO_STD(VIDIOC_QUERY_DV_TIMINGS, vidioc_query_dv_timings, v4l_print_dv_timings, 0),
2455 IOCTL_INFO_STD(VIDIOC_DV_TIMINGS_CAP, vidioc_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, type)),
2456 IOCTL_INFO_FNC(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
2457 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)),
2458 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)),
2459 };
2460 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
2461
2462 bool v4l2_is_known_ioctl(unsigned int cmd)
2463 {
2464 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2465 return false;
2466 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
2467 }
2468
2469 struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd)
2470 {
2471 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2472 return vdev->lock;
2473 if (test_bit(_IOC_NR(cmd), vdev->disable_locking))
2474 return NULL;
2475 if (vdev->queue && vdev->queue->lock &&
2476 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
2477 return vdev->queue->lock;
2478 return vdev->lock;
2479 }
2480
2481 /* Common ioctl debug function. This function can be used by
2482 external ioctl messages as well as internal V4L ioctl */
2483 void v4l_printk_ioctl(const char *prefix, unsigned int cmd)
2484 {
2485 const char *dir, *type;
2486
2487 if (prefix)
2488 printk(KERN_DEBUG "%s: ", prefix);
2489
2490 switch (_IOC_TYPE(cmd)) {
2491 case 'd':
2492 type = "v4l2_int";
2493 break;
2494 case 'V':
2495 if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
2496 type = "v4l2";
2497 break;
2498 }
2499 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
2500 return;
2501 default:
2502 type = "unknown";
2503 break;
2504 }
2505
2506 switch (_IOC_DIR(cmd)) {
2507 case _IOC_NONE: dir = "--"; break;
2508 case _IOC_READ: dir = "r-"; break;
2509 case _IOC_WRITE: dir = "-w"; break;
2510 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
2511 default: dir = "*ERR*"; break;
2512 }
2513 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
2514 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
2515 }
2516 EXPORT_SYMBOL(v4l_printk_ioctl);
2517
2518 static long __video_do_ioctl(struct file *file,
2519 unsigned int cmd, void *arg)
2520 {
2521 struct video_device *vfd = video_devdata(file);
2522 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
2523 bool write_only = false;
2524 struct v4l2_ioctl_info default_info;
2525 const struct v4l2_ioctl_info *info;
2526 void *fh = file->private_data;
2527 struct v4l2_fh *vfh = NULL;
2528 int dev_debug = vfd->dev_debug;
2529 long ret = -ENOTTY;
2530
2531 if (ops == NULL) {
2532 pr_warn("%s: has no ioctl_ops.\n",
2533 video_device_node_name(vfd));
2534 return ret;
2535 }
2536
2537 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
2538 vfh = file->private_data;
2539
2540 if (v4l2_is_known_ioctl(cmd)) {
2541 info = &v4l2_ioctls[_IOC_NR(cmd)];
2542
2543 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) &&
2544 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
2545 goto done;
2546
2547 if (vfh && (info->flags & INFO_FL_PRIO)) {
2548 ret = v4l2_prio_check(vfd->prio, vfh->prio);
2549 if (ret)
2550 goto done;
2551 }
2552 } else {
2553 default_info.ioctl = cmd;
2554 default_info.flags = 0;
2555 default_info.debug = v4l_print_default;
2556 info = &default_info;
2557 }
2558
2559 write_only = _IOC_DIR(cmd) == _IOC_WRITE;
2560 if (info->flags & INFO_FL_STD) {
2561 typedef int (*vidioc_op)(struct file *file, void *fh, void *p);
2562 const void *p = vfd->ioctl_ops;
2563 const vidioc_op *vidioc = p + info->u.offset;
2564
2565 ret = (*vidioc)(file, fh, arg);
2566 } else if (info->flags & INFO_FL_FUNC) {
2567 ret = info->u.func(ops, file, fh, arg);
2568 } else if (!ops->vidioc_default) {
2569 ret = -ENOTTY;
2570 } else {
2571 ret = ops->vidioc_default(file, fh,
2572 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
2573 cmd, arg);
2574 }
2575
2576 done:
2577 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) {
2578 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) &&
2579 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF))
2580 return ret;
2581
2582 v4l_printk_ioctl(video_device_node_name(vfd), cmd);
2583 if (ret < 0)
2584 pr_cont(": error %ld", ret);
2585 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG))
2586 pr_cont("\n");
2587 else if (_IOC_DIR(cmd) == _IOC_NONE)
2588 info->debug(arg, write_only);
2589 else {
2590 pr_cont(": ");
2591 info->debug(arg, write_only);
2592 }
2593 }
2594
2595 return ret;
2596 }
2597
2598 static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
2599 void __user **user_ptr, void ***kernel_ptr)
2600 {
2601 int ret = 0;
2602
2603 switch (cmd) {
2604 case VIDIOC_PREPARE_BUF:
2605 case VIDIOC_QUERYBUF:
2606 case VIDIOC_QBUF:
2607 case VIDIOC_DQBUF: {
2608 struct v4l2_buffer *buf = parg;
2609
2610 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
2611 if (buf->length > VIDEO_MAX_PLANES) {
2612 ret = -EINVAL;
2613 break;
2614 }
2615 *user_ptr = (void __user *)buf->m.planes;
2616 *kernel_ptr = (void **)&buf->m.planes;
2617 *array_size = sizeof(struct v4l2_plane) * buf->length;
2618 ret = 1;
2619 }
2620 break;
2621 }
2622
2623 case VIDIOC_G_EDID:
2624 case VIDIOC_S_EDID: {
2625 struct v4l2_edid *edid = parg;
2626
2627 if (edid->blocks) {
2628 if (edid->blocks > 256) {
2629 ret = -EINVAL;
2630 break;
2631 }
2632 *user_ptr = (void __user *)edid->edid;
2633 *kernel_ptr = (void **)&edid->edid;
2634 *array_size = edid->blocks * 128;
2635 ret = 1;
2636 }
2637 break;
2638 }
2639
2640 case VIDIOC_S_EXT_CTRLS:
2641 case VIDIOC_G_EXT_CTRLS:
2642 case VIDIOC_TRY_EXT_CTRLS: {
2643 struct v4l2_ext_controls *ctrls = parg;
2644
2645 if (ctrls->count != 0) {
2646 if (ctrls->count > V4L2_CID_MAX_CTRLS) {
2647 ret = -EINVAL;
2648 break;
2649 }
2650 *user_ptr = (void __user *)ctrls->controls;
2651 *kernel_ptr = (void **)&ctrls->controls;
2652 *array_size = sizeof(struct v4l2_ext_control)
2653 * ctrls->count;
2654 ret = 1;
2655 }
2656 break;
2657 }
2658 }
2659
2660 return ret;
2661 }
2662
2663 long
2664 video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
2665 v4l2_kioctl func)
2666 {
2667 char sbuf[128];
2668 void *mbuf = NULL;
2669 void *parg = (void *)arg;
2670 long err = -EINVAL;
2671 bool has_array_args;
2672 size_t array_size = 0;
2673 void __user *user_ptr = NULL;
2674 void **kernel_ptr = NULL;
2675
2676 /* Copy arguments into temp kernel buffer */
2677 if (_IOC_DIR(cmd) != _IOC_NONE) {
2678 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
2679 parg = sbuf;
2680 } else {
2681 /* too big to allocate from stack */
2682 mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
2683 if (NULL == mbuf)
2684 return -ENOMEM;
2685 parg = mbuf;
2686 }
2687
2688 err = -EFAULT;
2689 if (_IOC_DIR(cmd) & _IOC_WRITE) {
2690 unsigned int n = _IOC_SIZE(cmd);
2691
2692 /*
2693 * In some cases, only a few fields are used as input,
2694 * i.e. when the app sets "index" and then the driver
2695 * fills in the rest of the structure for the thing
2696 * with that index. We only need to copy up the first
2697 * non-input field.
2698 */
2699 if (v4l2_is_known_ioctl(cmd)) {
2700 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags;
2701 if (flags & INFO_FL_CLEAR_MASK)
2702 n = (flags & INFO_FL_CLEAR_MASK) >> 16;
2703 }
2704
2705 if (copy_from_user(parg, (void __user *)arg, n))
2706 goto out;
2707
2708 /* zero out anything we don't copy from userspace */
2709 if (n < _IOC_SIZE(cmd))
2710 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n);
2711 } else {
2712 /* read-only ioctl */
2713 memset(parg, 0, _IOC_SIZE(cmd));
2714 }
2715 }
2716
2717 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
2718 if (err < 0)
2719 goto out;
2720 has_array_args = err;
2721
2722 if (has_array_args) {
2723 /*
2724 * When adding new types of array args, make sure that the
2725 * parent argument to ioctl (which contains the pointer to the
2726 * array) fits into sbuf (so that mbuf will still remain
2727 * unused up to here).
2728 */
2729 mbuf = kmalloc(array_size, GFP_KERNEL);
2730 err = -ENOMEM;
2731 if (NULL == mbuf)
2732 goto out_array_args;
2733 err = -EFAULT;
2734 if (copy_from_user(mbuf, user_ptr, array_size))
2735 goto out_array_args;
2736 *kernel_ptr = mbuf;
2737 }
2738
2739 /* Handles IOCTL */
2740 err = func(file, cmd, parg);
2741 if (err == -ENOIOCTLCMD)
2742 err = -ENOTTY;
2743 if (err == 0) {
2744 if (cmd == VIDIOC_DQBUF)
2745 trace_v4l2_dqbuf(video_devdata(file)->minor, parg);
2746 else if (cmd == VIDIOC_QBUF)
2747 trace_v4l2_qbuf(video_devdata(file)->minor, parg);
2748 }
2749
2750 if (has_array_args) {
2751 *kernel_ptr = (void __force *)user_ptr;
2752 if (copy_to_user(user_ptr, mbuf, array_size))
2753 err = -EFAULT;
2754 goto out_array_args;
2755 }
2756 /* VIDIOC_QUERY_DV_TIMINGS can return an error, but still have valid
2757 results that must be returned. */
2758 if (err < 0 && cmd != VIDIOC_QUERY_DV_TIMINGS)
2759 goto out;
2760
2761 out_array_args:
2762 /* Copy results into user buffer */
2763 switch (_IOC_DIR(cmd)) {
2764 case _IOC_READ:
2765 case (_IOC_WRITE | _IOC_READ):
2766 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
2767 err = -EFAULT;
2768 break;
2769 }
2770
2771 out:
2772 kfree(mbuf);
2773 return err;
2774 }
2775 EXPORT_SYMBOL(video_usercopy);
2776
2777 long video_ioctl2(struct file *file,
2778 unsigned int cmd, unsigned long arg)
2779 {
2780 return video_usercopy(file, cmd, arg, __video_do_ioctl);
2781 }
2782 EXPORT_SYMBOL(video_ioctl2);
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