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net: qmi_wwan: add Olivetti Olicard 500
[linux/fpc-iii.git] / drivers / media / v4l2-core / v4l2-ioctl.c
blobd9113cc71c7707a391e19246b208ee2e53751ebe
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\n",
260 pix->width, pix->height,
261 (pix->pixelformat & 0xff),
262 (pix->pixelformat >> 8) & 0xff,
263 (pix->pixelformat >> 16) & 0xff,
264 (pix->pixelformat >> 24) & 0xff,
265 prt_names(pix->field, v4l2_field_names),
266 pix->bytesperline, pix->sizeimage,
267 pix->colorspace);
268 break;
269 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
270 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
271 mp = &p->fmt.pix_mp;
272 pr_cont(", width=%u, height=%u, "
273 "format=%c%c%c%c, field=%s, "
274 "colorspace=%d, num_planes=%u\n",
275 mp->width, mp->height,
276 (mp->pixelformat & 0xff),
277 (mp->pixelformat >> 8) & 0xff,
278 (mp->pixelformat >> 16) & 0xff,
279 (mp->pixelformat >> 24) & 0xff,
280 prt_names(mp->field, v4l2_field_names),
281 mp->colorspace, mp->num_planes);
282 for (i = 0; i < mp->num_planes; i++)
283 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i,
284 mp->plane_fmt[i].bytesperline,
285 mp->plane_fmt[i].sizeimage);
286 break;
287 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
288 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
289 win = &p->fmt.win;
290 /* Note: we can't print the clip list here since the clips
291 * pointer is a userspace pointer, not a kernelspace
292 * pointer. */
293 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",
294 win->w.width, win->w.height, win->w.left, win->w.top,
295 prt_names(win->field, v4l2_field_names),
296 win->chromakey, win->clipcount, win->clips,
297 win->bitmap, win->global_alpha);
298 break;
299 case V4L2_BUF_TYPE_VBI_CAPTURE:
300 case V4L2_BUF_TYPE_VBI_OUTPUT:
301 vbi = &p->fmt.vbi;
302 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, "
303 "sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n",
304 vbi->sampling_rate, vbi->offset,
305 vbi->samples_per_line,
306 (vbi->sample_format & 0xff),
307 (vbi->sample_format >> 8) & 0xff,
308 (vbi->sample_format >> 16) & 0xff,
309 (vbi->sample_format >> 24) & 0xff,
310 vbi->start[0], vbi->start[1],
311 vbi->count[0], vbi->count[1]);
312 break;
313 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
314 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
315 sliced = &p->fmt.sliced;
316 pr_cont(", service_set=0x%08x, io_size=%d\n",
317 sliced->service_set, sliced->io_size);
318 for (i = 0; i < 24; i++)
319 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
320 sliced->service_lines[0][i],
321 sliced->service_lines[1][i]);
322 break;
323 case V4L2_BUF_TYPE_SDR_CAPTURE:
324 sdr = &p->fmt.sdr;
325 pr_cont(", pixelformat=%c%c%c%c\n",
326 (sdr->pixelformat >> 0) & 0xff,
327 (sdr->pixelformat >> 8) & 0xff,
328 (sdr->pixelformat >> 16) & 0xff,
329 (sdr->pixelformat >> 24) & 0xff);
330 break;
331 }
332 }
333
334 static void v4l_print_framebuffer(const void *arg, bool write_only)
335 {
336 const struct v4l2_framebuffer *p = arg;
337
338 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, "
339 "height=%u, pixelformat=%c%c%c%c, "
340 "bytesperline=%u, sizeimage=%u, colorspace=%d\n",
341 p->capability, p->flags, p->base,
342 p->fmt.width, p->fmt.height,
343 (p->fmt.pixelformat & 0xff),
344 (p->fmt.pixelformat >> 8) & 0xff,
345 (p->fmt.pixelformat >> 16) & 0xff,
346 (p->fmt.pixelformat >> 24) & 0xff,
347 p->fmt.bytesperline, p->fmt.sizeimage,
348 p->fmt.colorspace);
349 }
350
351 static void v4l_print_buftype(const void *arg, bool write_only)
352 {
353 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names));
354 }
355
356 static void v4l_print_modulator(const void *arg, bool write_only)
357 {
358 const struct v4l2_modulator *p = arg;
359
360 if (write_only)
361 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans);
362 else
363 pr_cont("index=%u, name=%.*s, capability=0x%x, "
364 "rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
365 p->index, (int)sizeof(p->name), p->name, p->capability,
366 p->rangelow, p->rangehigh, p->txsubchans);
367 }
368
369 static void v4l_print_tuner(const void *arg, bool write_only)
370 {
371 const struct v4l2_tuner *p = arg;
372
373 if (write_only)
374 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode);
375 else
376 pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, "
377 "rangelow=%u, rangehigh=%u, signal=%u, afc=%d, "
378 "rxsubchans=0x%x, audmode=%u\n",
379 p->index, (int)sizeof(p->name), p->name, p->type,
380 p->capability, p->rangelow,
381 p->rangehigh, p->signal, p->afc,
382 p->rxsubchans, p->audmode);
383 }
384
385 static void v4l_print_frequency(const void *arg, bool write_only)
386 {
387 const struct v4l2_frequency *p = arg;
388
389 pr_cont("tuner=%u, type=%u, frequency=%u\n",
390 p->tuner, p->type, p->frequency);
391 }
392
393 static void v4l_print_standard(const void *arg, bool write_only)
394 {
395 const struct v4l2_standard *p = arg;
396
397 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, "
398 "framelines=%u\n", p->index,
399 (unsigned long long)p->id, (int)sizeof(p->name), p->name,
400 p->frameperiod.numerator,
401 p->frameperiod.denominator,
402 p->framelines);
403 }
404
405 static void v4l_print_std(const void *arg, bool write_only)
406 {
407 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg);
408 }
409
410 static void v4l_print_hw_freq_seek(const void *arg, bool write_only)
411 {
412 const struct v4l2_hw_freq_seek *p = arg;
413
414 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, "
415 "rangelow=%u, rangehigh=%u\n",
416 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing,
417 p->rangelow, p->rangehigh);
418 }
419
420 static void v4l_print_requestbuffers(const void *arg, bool write_only)
421 {
422 const struct v4l2_requestbuffers *p = arg;
423
424 pr_cont("count=%d, type=%s, memory=%s\n",
425 p->count,
426 prt_names(p->type, v4l2_type_names),
427 prt_names(p->memory, v4l2_memory_names));
428 }
429
430 static void v4l_print_buffer(const void *arg, bool write_only)
431 {
432 const struct v4l2_buffer *p = arg;
433 const struct v4l2_timecode *tc = &p->timecode;
434 const struct v4l2_plane *plane;
435 int i;
436
437 pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, "
438 "flags=0x%08x, field=%s, sequence=%d, memory=%s",
439 p->timestamp.tv_sec / 3600,
440 (int)(p->timestamp.tv_sec / 60) % 60,
441 (int)(p->timestamp.tv_sec % 60),
442 (long)p->timestamp.tv_usec,
443 p->index,
444 prt_names(p->type, v4l2_type_names),
445 p->flags, prt_names(p->field, v4l2_field_names),
446 p->sequence, prt_names(p->memory, v4l2_memory_names));
447
448 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
449 pr_cont("\n");
450 for (i = 0; i < p->length; ++i) {
451 plane = &p->m.planes[i];
452 printk(KERN_DEBUG
453 "plane %d: bytesused=%d, data_offset=0x%08x, "
454 "offset/userptr=0x%lx, length=%d\n",
455 i, plane->bytesused, plane->data_offset,
456 plane->m.userptr, plane->length);
457 }
458 } else {
459 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n",
460 p->bytesused, p->m.userptr, p->length);
461 }
462
463 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, "
464 "flags=0x%08x, frames=%d, userbits=0x%08x\n",
465 tc->hours, tc->minutes, tc->seconds,
466 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
467 }
468
469 static void v4l_print_exportbuffer(const void *arg, bool write_only)
470 {
471 const struct v4l2_exportbuffer *p = arg;
472
473 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n",
474 p->fd, prt_names(p->type, v4l2_type_names),
475 p->index, p->plane, p->flags);
476 }
477
478 static void v4l_print_create_buffers(const void *arg, bool write_only)
479 {
480 const struct v4l2_create_buffers *p = arg;
481
482 pr_cont("index=%d, count=%d, memory=%s, ",
483 p->index, p->count,
484 prt_names(p->memory, v4l2_memory_names));
485 v4l_print_format(&p->format, write_only);
486 }
487
488 static void v4l_print_streamparm(const void *arg, bool write_only)
489 {
490 const struct v4l2_streamparm *p = arg;
491
492 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
493
494 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
495 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
496 const struct v4l2_captureparm *c = &p->parm.capture;
497
498 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, "
499 "extendedmode=%d, readbuffers=%d\n",
500 c->capability, c->capturemode,
501 c->timeperframe.numerator, c->timeperframe.denominator,
502 c->extendedmode, c->readbuffers);
503 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
504 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
505 const struct v4l2_outputparm *c = &p->parm.output;
506
507 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, "
508 "extendedmode=%d, writebuffers=%d\n",
509 c->capability, c->outputmode,
510 c->timeperframe.numerator, c->timeperframe.denominator,
511 c->extendedmode, c->writebuffers);
512 } else {
513 pr_cont("\n");
514 }
515 }
516
517 static void v4l_print_queryctrl(const void *arg, bool write_only)
518 {
519 const struct v4l2_queryctrl *p = arg;
520
521 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, "
522 "step=%d, default=%d, flags=0x%08x\n",
523 p->id, p->type, (int)sizeof(p->name), p->name,
524 p->minimum, p->maximum,
525 p->step, p->default_value, p->flags);
526 }
527
528 static void v4l_print_querymenu(const void *arg, bool write_only)
529 {
530 const struct v4l2_querymenu *p = arg;
531
532 pr_cont("id=0x%x, index=%d\n", p->id, p->index);
533 }
534
535 static void v4l_print_control(const void *arg, bool write_only)
536 {
537 const struct v4l2_control *p = arg;
538
539 pr_cont("id=0x%x, value=%d\n", p->id, p->value);
540 }
541
542 static void v4l_print_ext_controls(const void *arg, bool write_only)
543 {
544 const struct v4l2_ext_controls *p = arg;
545 int i;
546
547 pr_cont("class=0x%x, count=%d, error_idx=%d",
548 p->ctrl_class, p->count, p->error_idx);
549 for (i = 0; i < p->count; i++) {
550 if (p->controls[i].size)
551 pr_cont(", id/val=0x%x/0x%x",
552 p->controls[i].id, p->controls[i].value);
553 else
554 pr_cont(", id/size=0x%x/%u",
555 p->controls[i].id, p->controls[i].size);
556 }
557 pr_cont("\n");
558 }
559
560 static void v4l_print_cropcap(const void *arg, bool write_only)
561 {
562 const struct v4l2_cropcap *p = arg;
563
564 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, "
565 "defrect wxh=%dx%d, x,y=%d,%d\n, "
566 "pixelaspect %d/%d\n",
567 prt_names(p->type, v4l2_type_names),
568 p->bounds.width, p->bounds.height,
569 p->bounds.left, p->bounds.top,
570 p->defrect.width, p->defrect.height,
571 p->defrect.left, p->defrect.top,
572 p->pixelaspect.numerator, p->pixelaspect.denominator);
573 }
574
575 static void v4l_print_crop(const void *arg, bool write_only)
576 {
577 const struct v4l2_crop *p = arg;
578
579 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n",
580 prt_names(p->type, v4l2_type_names),
581 p->c.width, p->c.height,
582 p->c.left, p->c.top);
583 }
584
585 static void v4l_print_selection(const void *arg, bool write_only)
586 {
587 const struct v4l2_selection *p = arg;
588
589 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n",
590 prt_names(p->type, v4l2_type_names),
591 p->target, p->flags,
592 p->r.width, p->r.height, p->r.left, p->r.top);
593 }
594
595 static void v4l_print_jpegcompression(const void *arg, bool write_only)
596 {
597 const struct v4l2_jpegcompression *p = arg;
598
599 pr_cont("quality=%d, APPn=%d, APP_len=%d, "
600 "COM_len=%d, jpeg_markers=0x%x\n",
601 p->quality, p->APPn, p->APP_len,
602 p->COM_len, p->jpeg_markers);
603 }
604
605 static void v4l_print_enc_idx(const void *arg, bool write_only)
606 {
607 const struct v4l2_enc_idx *p = arg;
608
609 pr_cont("entries=%d, entries_cap=%d\n",
610 p->entries, p->entries_cap);
611 }
612
613 static void v4l_print_encoder_cmd(const void *arg, bool write_only)
614 {
615 const struct v4l2_encoder_cmd *p = arg;
616
617 pr_cont("cmd=%d, flags=0x%x\n",
618 p->cmd, p->flags);
619 }
620
621 static void v4l_print_decoder_cmd(const void *arg, bool write_only)
622 {
623 const struct v4l2_decoder_cmd *p = arg;
624
625 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags);
626
627 if (p->cmd == V4L2_DEC_CMD_START)
628 pr_info("speed=%d, format=%u\n",
629 p->start.speed, p->start.format);
630 else if (p->cmd == V4L2_DEC_CMD_STOP)
631 pr_info("pts=%llu\n", p->stop.pts);
632 }
633
634 static void v4l_print_dbg_chip_info(const void *arg, bool write_only)
635 {
636 const struct v4l2_dbg_chip_info *p = arg;
637
638 pr_cont("type=%u, ", p->match.type);
639 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
640 pr_cont("name=%.*s, ",
641 (int)sizeof(p->match.name), p->match.name);
642 else
643 pr_cont("addr=%u, ", p->match.addr);
644 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name);
645 }
646
647 static void v4l_print_dbg_register(const void *arg, bool write_only)
648 {
649 const struct v4l2_dbg_register *p = arg;
650
651 pr_cont("type=%u, ", p->match.type);
652 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
653 pr_cont("name=%.*s, ",
654 (int)sizeof(p->match.name), p->match.name);
655 else
656 pr_cont("addr=%u, ", p->match.addr);
657 pr_cont("reg=0x%llx, val=0x%llx\n",
658 p->reg, p->val);
659 }
660
661 static void v4l_print_dv_timings(const void *arg, bool write_only)
662 {
663 const struct v4l2_dv_timings *p = arg;
664
665 switch (p->type) {
666 case V4L2_DV_BT_656_1120:
667 pr_cont("type=bt-656/1120, interlaced=%u, "
668 "pixelclock=%llu, "
669 "width=%u, height=%u, polarities=0x%x, "
670 "hfrontporch=%u, hsync=%u, "
671 "hbackporch=%u, vfrontporch=%u, "
672 "vsync=%u, vbackporch=%u, "
673 "il_vfrontporch=%u, il_vsync=%u, "
674 "il_vbackporch=%u, standards=0x%x, flags=0x%x\n",
675 p->bt.interlaced, p->bt.pixelclock,
676 p->bt.width, p->bt.height,
677 p->bt.polarities, p->bt.hfrontporch,
678 p->bt.hsync, p->bt.hbackporch,
679 p->bt.vfrontporch, p->bt.vsync,
680 p->bt.vbackporch, p->bt.il_vfrontporch,
681 p->bt.il_vsync, p->bt.il_vbackporch,
682 p->bt.standards, p->bt.flags);
683 break;
684 default:
685 pr_cont("type=%d\n", p->type);
686 break;
687 }
688 }
689
690 static void v4l_print_enum_dv_timings(const void *arg, bool write_only)
691 {
692 const struct v4l2_enum_dv_timings *p = arg;
693
694 pr_cont("index=%u, ", p->index);
695 v4l_print_dv_timings(&p->timings, write_only);
696 }
697
698 static void v4l_print_dv_timings_cap(const void *arg, bool write_only)
699 {
700 const struct v4l2_dv_timings_cap *p = arg;
701
702 switch (p->type) {
703 case V4L2_DV_BT_656_1120:
704 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, "
705 "pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
706 p->bt.min_width, p->bt.max_width,
707 p->bt.min_height, p->bt.max_height,
708 p->bt.min_pixelclock, p->bt.max_pixelclock,
709 p->bt.standards, p->bt.capabilities);
710 break;
711 default:
712 pr_cont("type=%u\n", p->type);
713 break;
714 }
715 }
716
717 static void v4l_print_frmsizeenum(const void *arg, bool write_only)
718 {
719 const struct v4l2_frmsizeenum *p = arg;
720
721 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u",
722 p->index,
723 (p->pixel_format & 0xff),
724 (p->pixel_format >> 8) & 0xff,
725 (p->pixel_format >> 16) & 0xff,
726 (p->pixel_format >> 24) & 0xff,
727 p->type);
728 switch (p->type) {
729 case V4L2_FRMSIZE_TYPE_DISCRETE:
730 pr_cont(", wxh=%ux%u\n",
731 p->discrete.width, p->discrete.height);
732 break;
733 case V4L2_FRMSIZE_TYPE_STEPWISE:
734 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n",
735 p->stepwise.min_width, p->stepwise.min_height,
736 p->stepwise.step_width, p->stepwise.step_height,
737 p->stepwise.max_width, p->stepwise.max_height);
738 break;
739 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
740 /* fall through */
741 default:
742 pr_cont("\n");
743 break;
744 }
745 }
746
747 static void v4l_print_frmivalenum(const void *arg, bool write_only)
748 {
749 const struct v4l2_frmivalenum *p = arg;
750
751 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u",
752 p->index,
753 (p->pixel_format & 0xff),
754 (p->pixel_format >> 8) & 0xff,
755 (p->pixel_format >> 16) & 0xff,
756 (p->pixel_format >> 24) & 0xff,
757 p->width, p->height, p->type);
758 switch (p->type) {
759 case V4L2_FRMIVAL_TYPE_DISCRETE:
760 pr_cont(", fps=%d/%d\n",
761 p->discrete.numerator,
762 p->discrete.denominator);
763 break;
764 case V4L2_FRMIVAL_TYPE_STEPWISE:
765 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n",
766 p->stepwise.min.numerator,
767 p->stepwise.min.denominator,
768 p->stepwise.max.numerator,
769 p->stepwise.max.denominator,
770 p->stepwise.step.numerator,
771 p->stepwise.step.denominator);
772 break;
773 case V4L2_FRMIVAL_TYPE_CONTINUOUS:
774 /* fall through */
775 default:
776 pr_cont("\n");
777 break;
778 }
779 }
780
781 static void v4l_print_event(const void *arg, bool write_only)
782 {
783 const struct v4l2_event *p = arg;
784 const struct v4l2_event_ctrl *c;
785
786 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, "
787 "timestamp=%lu.%9.9lu\n",
788 p->type, p->pending, p->sequence, p->id,
789 p->timestamp.tv_sec, p->timestamp.tv_nsec);
790 switch (p->type) {
791 case V4L2_EVENT_VSYNC:
792 printk(KERN_DEBUG "field=%s\n",
793 prt_names(p->u.vsync.field, v4l2_field_names));
794 break;
795 case V4L2_EVENT_CTRL:
796 c = &p->u.ctrl;
797 printk(KERN_DEBUG "changes=0x%x, type=%u, ",
798 c->changes, c->type);
799 if (c->type == V4L2_CTRL_TYPE_INTEGER64)
800 pr_cont("value64=%lld, ", c->value64);
801 else
802 pr_cont("value=%d, ", c->value);
803 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, "
804 "default_value=%d\n",
805 c->flags, c->minimum, c->maximum,
806 c->step, c->default_value);
807 break;
808 case V4L2_EVENT_FRAME_SYNC:
809 pr_cont("frame_sequence=%u\n",
810 p->u.frame_sync.frame_sequence);
811 break;
812 }
813 }
814
815 static void v4l_print_event_subscription(const void *arg, bool write_only)
816 {
817 const struct v4l2_event_subscription *p = arg;
818
819 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
820 p->type, p->id, p->flags);
821 }
822
823 static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only)
824 {
825 const struct v4l2_sliced_vbi_cap *p = arg;
826 int i;
827
828 pr_cont("type=%s, service_set=0x%08x\n",
829 prt_names(p->type, v4l2_type_names), p->service_set);
830 for (i = 0; i < 24; i++)
831 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
832 p->service_lines[0][i],
833 p->service_lines[1][i]);
834 }
835
836 static void v4l_print_freq_band(const void *arg, bool write_only)
837 {
838 const struct v4l2_frequency_band *p = arg;
839
840 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, "
841 "rangelow=%u, rangehigh=%u, modulation=0x%x\n",
842 p->tuner, p->type, p->index,
843 p->capability, p->rangelow,
844 p->rangehigh, p->modulation);
845 }
846
847 static void v4l_print_edid(const void *arg, bool write_only)
848 {
849 const struct v4l2_edid *p = arg;
850
851 pr_cont("pad=%u, start_block=%u, blocks=%u\n",
852 p->pad, p->start_block, p->blocks);
853 }
854
855 static void v4l_print_u32(const void *arg, bool write_only)
856 {
857 pr_cont("value=%u\n", *(const u32 *)arg);
858 }
859
860 static void v4l_print_newline(const void *arg, bool write_only)
861 {
862 pr_cont("\n");
863 }
864
865 static void v4l_print_default(const void *arg, bool write_only)
866 {
867 pr_cont("driver-specific ioctl\n");
868 }
869
870 static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
871 {
872 __u32 i;
873
874 /* zero the reserved fields */
875 c->reserved[0] = c->reserved[1] = 0;
876 for (i = 0; i < c->count; i++)
877 c->controls[i].reserved2[0] = 0;
878
879 /* V4L2_CID_PRIVATE_BASE cannot be used as control class
880 when using extended controls.
881 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
882 is it allowed for backwards compatibility.
883 */
884 if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE)
885 return 0;
886 /* Check that all controls are from the same control class. */
887 for (i = 0; i < c->count; i++) {
888 if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) {
889 c->error_idx = i;
890 return 0;
891 }
892 }
893 return 1;
894 }
895
896 static int check_fmt(struct file *file, enum v4l2_buf_type type)
897 {
898 struct video_device *vfd = video_devdata(file);
899 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
900 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
901 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI;
902 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
903 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
904 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
905
906 if (ops == NULL)
907 return -EINVAL;
908
909 switch (type) {
910 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
911 if (is_vid && is_rx &&
912 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane))
913 return 0;
914 break;
915 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
916 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_cap_mplane)
917 return 0;
918 break;
919 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
920 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay)
921 return 0;
922 break;
923 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
924 if (is_vid && is_tx &&
925 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane))
926 return 0;
927 break;
928 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
929 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane)
930 return 0;
931 break;
932 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
933 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay)
934 return 0;
935 break;
936 case V4L2_BUF_TYPE_VBI_CAPTURE:
937 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap)
938 return 0;
939 break;
940 case V4L2_BUF_TYPE_VBI_OUTPUT:
941 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out)
942 return 0;
943 break;
944 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
945 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap)
946 return 0;
947 break;
948 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
949 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out)
950 return 0;
951 break;
952 case V4L2_BUF_TYPE_SDR_CAPTURE:
953 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap)
954 return 0;
955 break;
956 default:
957 break;
958 }
959 return -EINVAL;
960 }
961
962 static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
963 struct file *file, void *fh, void *arg)
964 {
965 struct v4l2_capability *cap = (struct v4l2_capability *)arg;
966
967 cap->version = LINUX_VERSION_CODE;
968 return ops->vidioc_querycap(file, fh, cap);
969 }
970
971 static int v4l_s_input(const struct v4l2_ioctl_ops *ops,
972 struct file *file, void *fh, void *arg)
973 {
974 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg);
975 }
976
977 static int v4l_s_output(const struct v4l2_ioctl_ops *ops,
978 struct file *file, void *fh, void *arg)
979 {
980 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg);
981 }
982
983 static int v4l_g_priority(const struct v4l2_ioctl_ops *ops,
984 struct file *file, void *fh, void *arg)
985 {
986 struct video_device *vfd;
987 u32 *p = arg;
988
989 if (ops->vidioc_g_priority)
990 return ops->vidioc_g_priority(file, fh, arg);
991 vfd = video_devdata(file);
992 *p = v4l2_prio_max(&vfd->v4l2_dev->prio);
993 return 0;
994 }
995
996 static int v4l_s_priority(const struct v4l2_ioctl_ops *ops,
997 struct file *file, void *fh, void *arg)
998 {
999 struct video_device *vfd;
1000 struct v4l2_fh *vfh;
1001 u32 *p = arg;
1002
1003 if (ops->vidioc_s_priority)
1004 return ops->vidioc_s_priority(file, fh, *p);
1005 vfd = video_devdata(file);
1006 vfh = file->private_data;
1007 return v4l2_prio_change(&vfd->v4l2_dev->prio, &vfh->prio, *p);
1008 }
1009
1010 static int v4l_enuminput(const struct v4l2_ioctl_ops *ops,
1011 struct file *file, void *fh, void *arg)
1012 {
1013 struct video_device *vfd = video_devdata(file);
1014 struct v4l2_input *p = arg;
1015
1016 /*
1017 * We set the flags for CAP_DV_TIMINGS &
1018 * CAP_STD here based on ioctl handler provided by the
1019 * driver. If the driver doesn't support these
1020 * for a specific input, it must override these flags.
1021 */
1022 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1023 p->capabilities |= V4L2_IN_CAP_STD;
1024
1025 return ops->vidioc_enum_input(file, fh, p);
1026 }
1027
1028 static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops,
1029 struct file *file, void *fh, void *arg)
1030 {
1031 struct video_device *vfd = video_devdata(file);
1032 struct v4l2_output *p = arg;
1033
1034 /*
1035 * We set the flags for CAP_DV_TIMINGS &
1036 * CAP_STD here based on ioctl handler provided by the
1037 * driver. If the driver doesn't support these
1038 * for a specific output, it must override these flags.
1039 */
1040 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1041 p->capabilities |= V4L2_OUT_CAP_STD;
1042
1043 return ops->vidioc_enum_output(file, fh, p);
1044 }
1045
1046 static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
1047 struct file *file, void *fh, void *arg)
1048 {
1049 struct v4l2_fmtdesc *p = arg;
1050 struct video_device *vfd = video_devdata(file);
1051 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1052 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
1053
1054 switch (p->type) {
1055 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1056 if (unlikely(!is_rx || !ops->vidioc_enum_fmt_vid_cap))
1057 break;
1058 return ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
1059 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1060 if (unlikely(!is_rx || !ops->vidioc_enum_fmt_vid_cap_mplane))
1061 break;
1062 return ops->vidioc_enum_fmt_vid_cap_mplane(file, fh, arg);
1063 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1064 if (unlikely(!is_rx || !ops->vidioc_enum_fmt_vid_overlay))
1065 break;
1066 return ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
1067 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1068 if (unlikely(!is_tx || !ops->vidioc_enum_fmt_vid_out))
1069 break;
1070 return ops->vidioc_enum_fmt_vid_out(file, fh, arg);
1071 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1072 if (unlikely(!is_tx || !ops->vidioc_enum_fmt_vid_out_mplane))
1073 break;
1074 return ops->vidioc_enum_fmt_vid_out_mplane(file, fh, arg);
1075 case V4L2_BUF_TYPE_SDR_CAPTURE:
1076 if (unlikely(!is_rx || !ops->vidioc_enum_fmt_sdr_cap))
1077 break;
1078 return ops->vidioc_enum_fmt_sdr_cap(file, fh, arg);
1079 }
1080 return -EINVAL;
1081 }
1082
1083 static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
1084 struct file *file, void *fh, void *arg)
1085 {
1086 struct v4l2_format *p = arg;
1087 struct video_device *vfd = video_devdata(file);
1088 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1089 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
1090 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1091 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
1092
1093 switch (p->type) {
1094 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1095 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap))
1096 break;
1097 return ops->vidioc_g_fmt_vid_cap(file, fh, arg);
1098 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1099 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap_mplane))
1100 break;
1101 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
1102 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1103 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_overlay))
1104 break;
1105 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
1106 case V4L2_BUF_TYPE_VBI_CAPTURE:
1107 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_vbi_cap))
1108 break;
1109 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
1110 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1111 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_cap))
1112 break;
1113 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
1114 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1115 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out))
1116 break;
1117 return ops->vidioc_g_fmt_vid_out(file, fh, arg);
1118 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1119 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_mplane))
1120 break;
1121 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
1122 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1123 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_overlay))
1124 break;
1125 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
1126 case V4L2_BUF_TYPE_VBI_OUTPUT:
1127 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_vbi_out))
1128 break;
1129 return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
1130 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1131 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_out))
1132 break;
1133 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
1134 case V4L2_BUF_TYPE_SDR_CAPTURE:
1135 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_g_fmt_sdr_cap))
1136 break;
1137 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg);
1138 }
1139 return -EINVAL;
1140 }
1141
1142 static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
1143 struct file *file, void *fh, void *arg)
1144 {
1145 struct v4l2_format *p = arg;
1146 struct video_device *vfd = video_devdata(file);
1147 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1148 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
1149 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1150 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
1151
1152 switch (p->type) {
1153 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1154 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap))
1155 break;
1156 CLEAR_AFTER_FIELD(p, fmt.pix);
1157 return ops->vidioc_s_fmt_vid_cap(file, fh, arg);
1158 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1159 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap_mplane))
1160 break;
1161 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1162 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
1163 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1164 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_overlay))
1165 break;
1166 CLEAR_AFTER_FIELD(p, fmt.win);
1167 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
1168 case V4L2_BUF_TYPE_VBI_CAPTURE:
1169 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_vbi_cap))
1170 break;
1171 CLEAR_AFTER_FIELD(p, fmt.vbi);
1172 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
1173 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1174 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_cap))
1175 break;
1176 CLEAR_AFTER_FIELD(p, fmt.sliced);
1177 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
1178 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1179 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out))
1180 break;
1181 CLEAR_AFTER_FIELD(p, fmt.pix);
1182 return ops->vidioc_s_fmt_vid_out(file, fh, arg);
1183 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1184 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_mplane))
1185 break;
1186 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1187 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
1188 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1189 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_overlay))
1190 break;
1191 CLEAR_AFTER_FIELD(p, fmt.win);
1192 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
1193 case V4L2_BUF_TYPE_VBI_OUTPUT:
1194 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_vbi_out))
1195 break;
1196 CLEAR_AFTER_FIELD(p, fmt.vbi);
1197 return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
1198 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1199 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_out))
1200 break;
1201 CLEAR_AFTER_FIELD(p, fmt.sliced);
1202 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
1203 case V4L2_BUF_TYPE_SDR_CAPTURE:
1204 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_s_fmt_sdr_cap))
1205 break;
1206 CLEAR_AFTER_FIELD(p, fmt.sdr);
1207 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg);
1208 }
1209 return -EINVAL;
1210 }
1211
1212 static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
1213 struct file *file, void *fh, void *arg)
1214 {
1215 struct v4l2_format *p = arg;
1216 struct video_device *vfd = video_devdata(file);
1217 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1218 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
1219 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1220 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
1221
1222 switch (p->type) {
1223 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1224 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap))
1225 break;
1226 CLEAR_AFTER_FIELD(p, fmt.pix);
1227 return ops->vidioc_try_fmt_vid_cap(file, fh, arg);
1228 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1229 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap_mplane))
1230 break;
1231 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1232 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
1233 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1234 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_overlay))
1235 break;
1236 CLEAR_AFTER_FIELD(p, fmt.win);
1237 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
1238 case V4L2_BUF_TYPE_VBI_CAPTURE:
1239 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_vbi_cap))
1240 break;
1241 CLEAR_AFTER_FIELD(p, fmt.vbi);
1242 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
1243 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1244 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_cap))
1245 break;
1246 CLEAR_AFTER_FIELD(p, fmt.sliced);
1247 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
1248 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1249 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out))
1250 break;
1251 CLEAR_AFTER_FIELD(p, fmt.pix);
1252 return ops->vidioc_try_fmt_vid_out(file, fh, arg);
1253 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1254 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_mplane))
1255 break;
1256 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1257 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
1258 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1259 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_overlay))
1260 break;
1261 CLEAR_AFTER_FIELD(p, fmt.win);
1262 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
1263 case V4L2_BUF_TYPE_VBI_OUTPUT:
1264 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_vbi_out))
1265 break;
1266 CLEAR_AFTER_FIELD(p, fmt.vbi);
1267 return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
1268 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1269 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_out))
1270 break;
1271 CLEAR_AFTER_FIELD(p, fmt.sliced);
1272 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
1273 case V4L2_BUF_TYPE_SDR_CAPTURE:
1274 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_try_fmt_sdr_cap))
1275 break;
1276 CLEAR_AFTER_FIELD(p, fmt.sdr);
1277 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg);
1278 }
1279 return -EINVAL;
1280 }
1281
1282 static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
1283 struct file *file, void *fh, void *arg)
1284 {
1285 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
1286 }
1287
1288 static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
1289 struct file *file, void *fh, void *arg)
1290 {
1291 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
1292 }
1293
1294 static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,
1295 struct file *file, void *fh, void *arg)
1296 {
1297 struct video_device *vfd = video_devdata(file);
1298 struct v4l2_tuner *p = arg;
1299 int err;
1300
1301 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1302 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1303 err = ops->vidioc_g_tuner(file, fh, p);
1304 if (!err)
1305 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1306 return err;
1307 }
1308
1309 static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
1310 struct file *file, void *fh, void *arg)
1311 {
1312 struct video_device *vfd = video_devdata(file);
1313 struct v4l2_tuner *p = arg;
1314
1315 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1316 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1317 return ops->vidioc_s_tuner(file, fh, p);
1318 }
1319
1320 static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,
1321 struct file *file, void *fh, void *arg)
1322 {
1323 struct v4l2_modulator *p = arg;
1324 int err;
1325
1326 err = ops->vidioc_g_modulator(file, fh, p);
1327 if (!err)
1328 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1329 return err;
1330 }
1331
1332 static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
1333 struct file *file, void *fh, void *arg)
1334 {
1335 struct video_device *vfd = video_devdata(file);
1336 struct v4l2_frequency *p = arg;
1337
1338 if (vfd->vfl_type == VFL_TYPE_SDR)
1339 p->type = V4L2_TUNER_ADC;
1340 else
1341 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1342 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1343 return ops->vidioc_g_frequency(file, fh, p);
1344 }
1345
1346 static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
1347 struct file *file, void *fh, void *arg)
1348 {
1349 struct video_device *vfd = video_devdata(file);
1350 const struct v4l2_frequency *p = arg;
1351 enum v4l2_tuner_type type;
1352
1353 if (vfd->vfl_type == VFL_TYPE_SDR) {
1354 if (p->type != V4L2_TUNER_ADC && p->type != V4L2_TUNER_RF)
1355 return -EINVAL;
1356 } else {
1357 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1358 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1359 if (type != p->type)
1360 return -EINVAL;
1361 }
1362 return ops->vidioc_s_frequency(file, fh, p);
1363 }
1364
1365 static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
1366 struct file *file, void *fh, void *arg)
1367 {
1368 struct video_device *vfd = video_devdata(file);
1369 struct v4l2_standard *p = arg;
1370 v4l2_std_id id = vfd->tvnorms, curr_id = 0;
1371 unsigned int index = p->index, i, j = 0;
1372 const char *descr = "";
1373
1374 /* Return -ENODATA if the tvnorms for the current input
1375 or output is 0, meaning that it doesn't support this API. */
1376 if (id == 0)
1377 return -ENODATA;
1378
1379 /* Return norm array in a canonical way */
1380 for (i = 0; i <= index && id; i++) {
1381 /* last std value in the standards array is 0, so this
1382 while always ends there since (id & 0) == 0. */
1383 while ((id & standards[j].std) != standards[j].std)
1384 j++;
1385 curr_id = standards[j].std;
1386 descr = standards[j].descr;
1387 j++;
1388 if (curr_id == 0)
1389 break;
1390 if (curr_id != V4L2_STD_PAL &&
1391 curr_id != V4L2_STD_SECAM &&
1392 curr_id != V4L2_STD_NTSC)
1393 id &= ~curr_id;
1394 }
1395 if (i <= index)
1396 return -EINVAL;
1397
1398 v4l2_video_std_construct(p, curr_id, descr);
1399 return 0;
1400 }
1401
1402 static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
1403 struct file *file, void *fh, void *arg)
1404 {
1405 struct video_device *vfd = video_devdata(file);
1406 v4l2_std_id id = *(v4l2_std_id *)arg, norm;
1407
1408 norm = id & vfd->tvnorms;
1409 if (vfd->tvnorms && !norm) /* Check if std is supported */
1410 return -EINVAL;
1411
1412 /* Calls the specific handler */
1413 return ops->vidioc_s_std(file, fh, norm);
1414 }
1415
1416 static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
1417 struct file *file, void *fh, void *arg)
1418 {
1419 struct video_device *vfd = video_devdata(file);
1420 v4l2_std_id *p = arg;
1421
1422 /*
1423 * If no signal is detected, then the driver should return
1424 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with
1425 * any standards that do not apply removed.
1426 *
1427 * This means that tuners, audio and video decoders can join
1428 * their efforts to improve the standards detection.
1429 */
1430 *p = vfd->tvnorms;
1431 return ops->vidioc_querystd(file, fh, arg);
1432 }
1433
1434 static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
1435 struct file *file, void *fh, void *arg)
1436 {
1437 struct video_device *vfd = video_devdata(file);
1438 struct v4l2_hw_freq_seek *p = arg;
1439 enum v4l2_tuner_type type;
1440
1441 /* s_hw_freq_seek is not supported for SDR for now */
1442 if (vfd->vfl_type == VFL_TYPE_SDR)
1443 return -EINVAL;
1444
1445 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1446 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1447 if (p->type != type)
1448 return -EINVAL;
1449 return ops->vidioc_s_hw_freq_seek(file, fh, p);
1450 }
1451
1452 static int v4l_overlay(const struct v4l2_ioctl_ops *ops,
1453 struct file *file, void *fh, void *arg)
1454 {
1455 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg);
1456 }
1457
1458 static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,
1459 struct file *file, void *fh, void *arg)
1460 {
1461 struct v4l2_requestbuffers *p = arg;
1462 int ret = check_fmt(file, p->type);
1463
1464 if (ret)
1465 return ret;
1466
1467 CLEAR_AFTER_FIELD(p, memory);
1468
1469 return ops->vidioc_reqbufs(file, fh, p);
1470 }
1471
1472 static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,
1473 struct file *file, void *fh, void *arg)
1474 {
1475 struct v4l2_buffer *p = arg;
1476 int ret = check_fmt(file, p->type);
1477
1478 return ret ? ret : ops->vidioc_querybuf(file, fh, p);
1479 }
1480
1481 static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,
1482 struct file *file, void *fh, void *arg)
1483 {
1484 struct v4l2_buffer *p = arg;
1485 int ret = check_fmt(file, p->type);
1486
1487 return ret ? ret : ops->vidioc_qbuf(file, fh, p);
1488 }
1489
1490 static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,
1491 struct file *file, void *fh, void *arg)
1492 {
1493 struct v4l2_buffer *p = arg;
1494 int ret = check_fmt(file, p->type);
1495
1496 return ret ? ret : ops->vidioc_dqbuf(file, fh, p);
1497 }
1498
1499 static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
1500 struct file *file, void *fh, void *arg)
1501 {
1502 struct v4l2_create_buffers *create = arg;
1503 int ret = check_fmt(file, create->format.type);
1504
1505 return ret ? ret : ops->vidioc_create_bufs(file, fh, create);
1506 }
1507
1508 static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
1509 struct file *file, void *fh, void *arg)
1510 {
1511 struct v4l2_buffer *b = arg;
1512 int ret = check_fmt(file, b->type);
1513
1514 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
1515 }
1516
1517 static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
1518 struct file *file, void *fh, void *arg)
1519 {
1520 struct v4l2_streamparm *p = arg;
1521 v4l2_std_id std;
1522 int ret = check_fmt(file, p->type);
1523
1524 if (ret)
1525 return ret;
1526 if (ops->vidioc_g_parm)
1527 return ops->vidioc_g_parm(file, fh, p);
1528 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1529 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1530 return -EINVAL;
1531 p->parm.capture.readbuffers = 2;
1532 ret = ops->vidioc_g_std(file, fh, &std);
1533 if (ret == 0)
1534 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe);
1535 return ret;
1536 }
1537
1538 static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
1539 struct file *file, void *fh, void *arg)
1540 {
1541 struct v4l2_streamparm *p = arg;
1542 int ret = check_fmt(file, p->type);
1543
1544 return ret ? ret : ops->vidioc_s_parm(file, fh, p);
1545 }
1546
1547 static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,
1548 struct file *file, void *fh, void *arg)
1549 {
1550 struct video_device *vfd = video_devdata(file);
1551 struct v4l2_queryctrl *p = arg;
1552 struct v4l2_fh *vfh =
1553 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1554
1555 if (vfh && vfh->ctrl_handler)
1556 return v4l2_queryctrl(vfh->ctrl_handler, p);
1557 if (vfd->ctrl_handler)
1558 return v4l2_queryctrl(vfd->ctrl_handler, p);
1559 if (ops->vidioc_queryctrl)
1560 return ops->vidioc_queryctrl(file, fh, p);
1561 return -ENOTTY;
1562 }
1563
1564 static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,
1565 struct file *file, void *fh, void *arg)
1566 {
1567 struct video_device *vfd = video_devdata(file);
1568 struct v4l2_querymenu *p = arg;
1569 struct v4l2_fh *vfh =
1570 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1571
1572 if (vfh && vfh->ctrl_handler)
1573 return v4l2_querymenu(vfh->ctrl_handler, p);
1574 if (vfd->ctrl_handler)
1575 return v4l2_querymenu(vfd->ctrl_handler, p);
1576 if (ops->vidioc_querymenu)
1577 return ops->vidioc_querymenu(file, fh, p);
1578 return -ENOTTY;
1579 }
1580
1581 static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops,
1582 struct file *file, void *fh, void *arg)
1583 {
1584 struct video_device *vfd = video_devdata(file);
1585 struct v4l2_control *p = arg;
1586 struct v4l2_fh *vfh =
1587 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1588 struct v4l2_ext_controls ctrls;
1589 struct v4l2_ext_control ctrl;
1590
1591 if (vfh && vfh->ctrl_handler)
1592 return v4l2_g_ctrl(vfh->ctrl_handler, p);
1593 if (vfd->ctrl_handler)
1594 return v4l2_g_ctrl(vfd->ctrl_handler, p);
1595 if (ops->vidioc_g_ctrl)
1596 return ops->vidioc_g_ctrl(file, fh, p);
1597 if (ops->vidioc_g_ext_ctrls == NULL)
1598 return -ENOTTY;
1599
1600 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1601 ctrls.count = 1;
1602 ctrls.controls = &ctrl;
1603 ctrl.id = p->id;
1604 ctrl.value = p->value;
1605 if (check_ext_ctrls(&ctrls, 1)) {
1606 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
1607
1608 if (ret == 0)
1609 p->value = ctrl.value;
1610 return ret;
1611 }
1612 return -EINVAL;
1613 }
1614
1615 static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,
1616 struct file *file, void *fh, void *arg)
1617 {
1618 struct video_device *vfd = video_devdata(file);
1619 struct v4l2_control *p = arg;
1620 struct v4l2_fh *vfh =
1621 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1622 struct v4l2_ext_controls ctrls;
1623 struct v4l2_ext_control ctrl;
1624
1625 if (vfh && vfh->ctrl_handler)
1626 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
1627 if (vfd->ctrl_handler)
1628 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
1629 if (ops->vidioc_s_ctrl)
1630 return ops->vidioc_s_ctrl(file, fh, p);
1631 if (ops->vidioc_s_ext_ctrls == NULL)
1632 return -ENOTTY;
1633
1634 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1635 ctrls.count = 1;
1636 ctrls.controls = &ctrl;
1637 ctrl.id = p->id;
1638 ctrl.value = p->value;
1639 if (check_ext_ctrls(&ctrls, 1))
1640 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
1641 return -EINVAL;
1642 }
1643
1644 static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1645 struct file *file, void *fh, void *arg)
1646 {
1647 struct video_device *vfd = video_devdata(file);
1648 struct v4l2_ext_controls *p = arg;
1649 struct v4l2_fh *vfh =
1650 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1651
1652 p->error_idx = p->count;
1653 if (vfh && vfh->ctrl_handler)
1654 return v4l2_g_ext_ctrls(vfh->ctrl_handler, p);
1655 if (vfd->ctrl_handler)
1656 return v4l2_g_ext_ctrls(vfd->ctrl_handler, p);
1657 if (ops->vidioc_g_ext_ctrls == NULL)
1658 return -ENOTTY;
1659 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :
1660 -EINVAL;
1661 }
1662
1663 static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1664 struct file *file, void *fh, void *arg)
1665 {
1666 struct video_device *vfd = video_devdata(file);
1667 struct v4l2_ext_controls *p = arg;
1668 struct v4l2_fh *vfh =
1669 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1670
1671 p->error_idx = p->count;
1672 if (vfh && vfh->ctrl_handler)
1673 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, p);
1674 if (vfd->ctrl_handler)
1675 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, p);
1676 if (ops->vidioc_s_ext_ctrls == NULL)
1677 return -ENOTTY;
1678 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :
1679 -EINVAL;
1680 }
1681
1682 static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1683 struct file *file, void *fh, void *arg)
1684 {
1685 struct video_device *vfd = video_devdata(file);
1686 struct v4l2_ext_controls *p = arg;
1687 struct v4l2_fh *vfh =
1688 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1689
1690 p->error_idx = p->count;
1691 if (vfh && vfh->ctrl_handler)
1692 return v4l2_try_ext_ctrls(vfh->ctrl_handler, p);
1693 if (vfd->ctrl_handler)
1694 return v4l2_try_ext_ctrls(vfd->ctrl_handler, p);
1695 if (ops->vidioc_try_ext_ctrls == NULL)
1696 return -ENOTTY;
1697 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :
1698 -EINVAL;
1699 }
1700
1701 static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
1702 struct file *file, void *fh, void *arg)
1703 {
1704 struct v4l2_crop *p = arg;
1705 struct v4l2_selection s = {
1706 .type = p->type,
1707 };
1708 int ret;
1709
1710 if (ops->vidioc_g_crop)
1711 return ops->vidioc_g_crop(file, fh, p);
1712 /* simulate capture crop using selection api */
1713
1714 /* crop means compose for output devices */
1715 if (V4L2_TYPE_IS_OUTPUT(p->type))
1716 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
1717 else
1718 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
1719
1720 ret = ops->vidioc_g_selection(file, fh, &s);
1721
1722 /* copying results to old structure on success */
1723 if (!ret)
1724 p->c = s.r;
1725 return ret;
1726 }
1727
1728 static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
1729 struct file *file, void *fh, void *arg)
1730 {
1731 struct v4l2_crop *p = arg;
1732 struct v4l2_selection s = {
1733 .type = p->type,
1734 .r = p->c,
1735 };
1736
1737 if (ops->vidioc_s_crop)
1738 return ops->vidioc_s_crop(file, fh, p);
1739 /* simulate capture crop using selection api */
1740
1741 /* crop means compose for output devices */
1742 if (V4L2_TYPE_IS_OUTPUT(p->type))
1743 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
1744 else
1745 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
1746
1747 return ops->vidioc_s_selection(file, fh, &s);
1748 }
1749
1750 static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
1751 struct file *file, void *fh, void *arg)
1752 {
1753 struct v4l2_cropcap *p = arg;
1754 struct v4l2_selection s = { .type = p->type };
1755 int ret;
1756
1757 if (ops->vidioc_cropcap)
1758 return ops->vidioc_cropcap(file, fh, p);
1759
1760 /* obtaining bounds */
1761 if (V4L2_TYPE_IS_OUTPUT(p->type))
1762 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
1763 else
1764 s.target = V4L2_SEL_TGT_CROP_BOUNDS;
1765
1766 ret = ops->vidioc_g_selection(file, fh, &s);
1767 if (ret)
1768 return ret;
1769 p->bounds = s.r;
1770
1771 /* obtaining defrect */
1772 if (V4L2_TYPE_IS_OUTPUT(p->type))
1773 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
1774 else
1775 s.target = V4L2_SEL_TGT_CROP_DEFAULT;
1776
1777 ret = ops->vidioc_g_selection(file, fh, &s);
1778 if (ret)
1779 return ret;
1780 p->defrect = s.r;
1781
1782 /* setting trivial pixelaspect */
1783 p->pixelaspect.numerator = 1;
1784 p->pixelaspect.denominator = 1;
1785 return 0;
1786 }
1787
1788 static int v4l_log_status(const struct v4l2_ioctl_ops *ops,
1789 struct file *file, void *fh, void *arg)
1790 {
1791 struct video_device *vfd = video_devdata(file);
1792 int ret;
1793
1794 if (vfd->v4l2_dev)
1795 pr_info("%s: ================= START STATUS =================\n",
1796 vfd->v4l2_dev->name);
1797 ret = ops->vidioc_log_status(file, fh);
1798 if (vfd->v4l2_dev)
1799 pr_info("%s: ================== END STATUS ==================\n",
1800 vfd->v4l2_dev->name);
1801 return ret;
1802 }
1803
1804 static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
1805 struct file *file, void *fh, void *arg)
1806 {
1807 #ifdef CONFIG_VIDEO_ADV_DEBUG
1808 struct v4l2_dbg_register *p = arg;
1809 struct video_device *vfd = video_devdata(file);
1810 struct v4l2_subdev *sd;
1811 int idx = 0;
1812
1813 if (!capable(CAP_SYS_ADMIN))
1814 return -EPERM;
1815 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
1816 if (vfd->v4l2_dev == NULL)
1817 return -EINVAL;
1818 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
1819 if (p->match.addr == idx++)
1820 return v4l2_subdev_call(sd, core, g_register, p);
1821 return -EINVAL;
1822 }
1823 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
1824 (ops->vidioc_g_chip_info || p->match.addr == 0))
1825 return ops->vidioc_g_register(file, fh, p);
1826 return -EINVAL;
1827 #else
1828 return -ENOTTY;
1829 #endif
1830 }
1831
1832 static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
1833 struct file *file, void *fh, void *arg)
1834 {
1835 #ifdef CONFIG_VIDEO_ADV_DEBUG
1836 const struct v4l2_dbg_register *p = arg;
1837 struct video_device *vfd = video_devdata(file);
1838 struct v4l2_subdev *sd;
1839 int idx = 0;
1840
1841 if (!capable(CAP_SYS_ADMIN))
1842 return -EPERM;
1843 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
1844 if (vfd->v4l2_dev == NULL)
1845 return -EINVAL;
1846 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
1847 if (p->match.addr == idx++)
1848 return v4l2_subdev_call(sd, core, s_register, p);
1849 return -EINVAL;
1850 }
1851 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
1852 (ops->vidioc_g_chip_info || p->match.addr == 0))
1853 return ops->vidioc_s_register(file, fh, p);
1854 return -EINVAL;
1855 #else
1856 return -ENOTTY;
1857 #endif
1858 }
1859
1860 static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,
1861 struct file *file, void *fh, void *arg)
1862 {
1863 #ifdef CONFIG_VIDEO_ADV_DEBUG
1864 struct video_device *vfd = video_devdata(file);
1865 struct v4l2_dbg_chip_info *p = arg;
1866 struct v4l2_subdev *sd;
1867 int idx = 0;
1868
1869 switch (p->match.type) {
1870 case V4L2_CHIP_MATCH_BRIDGE:
1871 if (ops->vidioc_s_register)
1872 p->flags |= V4L2_CHIP_FL_WRITABLE;
1873 if (ops->vidioc_g_register)
1874 p->flags |= V4L2_CHIP_FL_READABLE;
1875 strlcpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));
1876 if (ops->vidioc_g_chip_info)
1877 return ops->vidioc_g_chip_info(file, fh, arg);
1878 if (p->match.addr)
1879 return -EINVAL;
1880 return 0;
1881
1882 case V4L2_CHIP_MATCH_SUBDEV:
1883 if (vfd->v4l2_dev == NULL)
1884 break;
1885 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {
1886 if (p->match.addr != idx++)
1887 continue;
1888 if (sd->ops->core && sd->ops->core->s_register)
1889 p->flags |= V4L2_CHIP_FL_WRITABLE;
1890 if (sd->ops->core && sd->ops->core->g_register)
1891 p->flags |= V4L2_CHIP_FL_READABLE;
1892 strlcpy(p->name, sd->name, sizeof(p->name));
1893 return 0;
1894 }
1895 break;
1896 }
1897 return -EINVAL;
1898 #else
1899 return -ENOTTY;
1900 #endif
1901 }
1902
1903 static int v4l_dqevent(const struct v4l2_ioctl_ops *ops,
1904 struct file *file, void *fh, void *arg)
1905 {
1906 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK);
1907 }
1908
1909 static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,
1910 struct file *file, void *fh, void *arg)
1911 {
1912 return ops->vidioc_subscribe_event(fh, arg);
1913 }
1914
1915 static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,
1916 struct file *file, void *fh, void *arg)
1917 {
1918 return ops->vidioc_unsubscribe_event(fh, arg);
1919 }
1920
1921 static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,
1922 struct file *file, void *fh, void *arg)
1923 {
1924 struct v4l2_sliced_vbi_cap *p = arg;
1925 int ret = check_fmt(file, p->type);
1926
1927 if (ret)
1928 return ret;
1929
1930 /* Clear up to type, everything after type is zeroed already */
1931 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
1932
1933 return ops->vidioc_g_sliced_vbi_cap(file, fh, p);
1934 }
1935
1936 static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
1937 struct file *file, void *fh, void *arg)
1938 {
1939 struct video_device *vfd = video_devdata(file);
1940 struct v4l2_frequency_band *p = arg;
1941 enum v4l2_tuner_type type;
1942 int err;
1943
1944 if (vfd->vfl_type == VFL_TYPE_SDR) {
1945 if (p->type != V4L2_TUNER_ADC && p->type != V4L2_TUNER_RF)
1946 return -EINVAL;
1947 type = p->type;
1948 } else {
1949 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1950 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1951 if (type != p->type)
1952 return -EINVAL;
1953 }
1954 if (ops->vidioc_enum_freq_bands)
1955 return ops->vidioc_enum_freq_bands(file, fh, p);
1956 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) {
1957 struct v4l2_tuner t = {
1958 .index = p->tuner,
1959 .type = type,
1960 };
1961
1962 if (p->index)
1963 return -EINVAL;
1964 err = ops->vidioc_g_tuner(file, fh, &t);
1965 if (err)
1966 return err;
1967 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;
1968 p->rangelow = t.rangelow;
1969 p->rangehigh = t.rangehigh;
1970 p->modulation = (type == V4L2_TUNER_RADIO) ?
1971 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
1972 return 0;
1973 }
1974 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) {
1975 struct v4l2_modulator m = {
1976 .index = p->tuner,
1977 };
1978
1979 if (type != V4L2_TUNER_RADIO)
1980 return -EINVAL;
1981 if (p->index)
1982 return -EINVAL;
1983 err = ops->vidioc_g_modulator(file, fh, &m);
1984 if (err)
1985 return err;
1986 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;
1987 p->rangelow = m.rangelow;
1988 p->rangehigh = m.rangehigh;
1989 p->modulation = (type == V4L2_TUNER_RADIO) ?
1990 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
1991 return 0;
1992 }
1993 return -ENOTTY;
1994 }
1995
1996 struct v4l2_ioctl_info {
1997 unsigned int ioctl;
1998 u32 flags;
1999 const char * const name;
2000 union {
2001 u32 offset;
2002 int (*func)(const struct v4l2_ioctl_ops *ops,
2003 struct file *file, void *fh, void *p);
2004 } u;
2005 void (*debug)(const void *arg, bool write_only);
2006 };
2007
2008 /* This control needs a priority check */
2009 #define INFO_FL_PRIO (1 << 0)
2010 /* This control can be valid if the filehandle passes a control handler. */
2011 #define INFO_FL_CTRL (1 << 1)
2012 /* This is a standard ioctl, no need for special code */
2013 #define INFO_FL_STD (1 << 2)
2014 /* This is ioctl has its own function */
2015 #define INFO_FL_FUNC (1 << 3)
2016 /* Queuing ioctl */
2017 #define INFO_FL_QUEUE (1 << 4)
2018 /* Zero struct from after the field to the end */
2019 #define INFO_FL_CLEAR(v4l2_struct, field) \
2020 ((offsetof(struct v4l2_struct, field) + \
2021 sizeof(((struct v4l2_struct *)0)->field)) << 16)
2022 #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
2023
2024 #define IOCTL_INFO_STD(_ioctl, _vidioc, _debug, _flags) \
2025 [_IOC_NR(_ioctl)] = { \
2026 .ioctl = _ioctl, \
2027 .flags = _flags | INFO_FL_STD, \
2028 .name = #_ioctl, \
2029 .u.offset = offsetof(struct v4l2_ioctl_ops, _vidioc), \
2030 .debug = _debug, \
2031 }
2032
2033 #define IOCTL_INFO_FNC(_ioctl, _func, _debug, _flags) \
2034 [_IOC_NR(_ioctl)] = { \
2035 .ioctl = _ioctl, \
2036 .flags = _flags | INFO_FL_FUNC, \
2037 .name = #_ioctl, \
2038 .u.func = _func, \
2039 .debug = _debug, \
2040 }
2041
2042 static struct v4l2_ioctl_info v4l2_ioctls[] = {
2043 IOCTL_INFO_FNC(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
2044 IOCTL_INFO_FNC(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)),
2045 IOCTL_INFO_FNC(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, INFO_FL_CLEAR(v4l2_format, type)),
2046 IOCTL_INFO_FNC(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
2047 IOCTL_INFO_FNC(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2048 IOCTL_INFO_FNC(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
2049 IOCTL_INFO_STD(VIDIOC_G_FBUF, vidioc_g_fbuf, v4l_print_framebuffer, 0),
2050 IOCTL_INFO_STD(VIDIOC_S_FBUF, vidioc_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
2051 IOCTL_INFO_FNC(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO),
2052 IOCTL_INFO_FNC(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),
2053 IOCTL_INFO_STD(VIDIOC_EXPBUF, vidioc_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)),
2054 IOCTL_INFO_FNC(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),
2055 IOCTL_INFO_FNC(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2056 IOCTL_INFO_FNC(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2057 IOCTL_INFO_FNC(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
2058 IOCTL_INFO_FNC(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
2059 IOCTL_INFO_STD(VIDIOC_G_STD, vidioc_g_std, v4l_print_std, 0),
2060 IOCTL_INFO_FNC(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
2061 IOCTL_INFO_FNC(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
2062 IOCTL_INFO_FNC(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
2063 IOCTL_INFO_FNC(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
2064 IOCTL_INFO_FNC(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
2065 IOCTL_INFO_FNC(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
2066 IOCTL_INFO_FNC(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
2067 IOCTL_INFO_STD(VIDIOC_G_AUDIO, vidioc_g_audio, v4l_print_audio, 0),
2068 IOCTL_INFO_STD(VIDIOC_S_AUDIO, vidioc_s_audio, v4l_print_audio, INFO_FL_PRIO),
2069 IOCTL_INFO_FNC(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
2070 IOCTL_INFO_FNC(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
2071 IOCTL_INFO_STD(VIDIOC_G_INPUT, vidioc_g_input, v4l_print_u32, 0),
2072 IOCTL_INFO_FNC(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
2073 IOCTL_INFO_STD(VIDIOC_G_EDID, vidioc_g_edid, v4l_print_edid, INFO_FL_CLEAR(v4l2_edid, edid)),
2074 IOCTL_INFO_STD(VIDIOC_S_EDID, vidioc_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_edid, edid)),
2075 IOCTL_INFO_STD(VIDIOC_G_OUTPUT, vidioc_g_output, v4l_print_u32, 0),
2076 IOCTL_INFO_FNC(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
2077 IOCTL_INFO_FNC(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
2078 IOCTL_INFO_STD(VIDIOC_G_AUDOUT, vidioc_g_audout, v4l_print_audioout, 0),
2079 IOCTL_INFO_STD(VIDIOC_S_AUDOUT, vidioc_s_audout, v4l_print_audioout, INFO_FL_PRIO),
2080 IOCTL_INFO_FNC(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
2081 IOCTL_INFO_STD(VIDIOC_S_MODULATOR, vidioc_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
2082 IOCTL_INFO_FNC(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
2083 IOCTL_INFO_FNC(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
2084 IOCTL_INFO_FNC(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
2085 IOCTL_INFO_FNC(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
2086 IOCTL_INFO_FNC(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
2087 IOCTL_INFO_STD(VIDIOC_G_SELECTION, vidioc_g_selection, v4l_print_selection, 0),
2088 IOCTL_INFO_STD(VIDIOC_S_SELECTION, vidioc_s_selection, v4l_print_selection, INFO_FL_PRIO),
2089 IOCTL_INFO_STD(VIDIOC_G_JPEGCOMP, vidioc_g_jpegcomp, v4l_print_jpegcompression, 0),
2090 IOCTL_INFO_STD(VIDIOC_S_JPEGCOMP, vidioc_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
2091 IOCTL_INFO_FNC(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
2092 IOCTL_INFO_FNC(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
2093 IOCTL_INFO_STD(VIDIOC_ENUMAUDIO, vidioc_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
2094 IOCTL_INFO_STD(VIDIOC_ENUMAUDOUT, vidioc_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
2095 IOCTL_INFO_FNC(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
2096 IOCTL_INFO_FNC(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
2097 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)),
2098 IOCTL_INFO_FNC(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
2099 IOCTL_INFO_FNC(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2100 IOCTL_INFO_FNC(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL),
2101 IOCTL_INFO_FNC(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2102 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMESIZES, vidioc_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
2103 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMEINTERVALS, vidioc_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
2104 IOCTL_INFO_STD(VIDIOC_G_ENC_INDEX, vidioc_g_enc_index, v4l_print_enc_idx, 0),
2105 IOCTL_INFO_STD(VIDIOC_ENCODER_CMD, vidioc_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2106 IOCTL_INFO_STD(VIDIOC_TRY_ENCODER_CMD, vidioc_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2107 IOCTL_INFO_STD(VIDIOC_DECODER_CMD, vidioc_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
2108 IOCTL_INFO_STD(VIDIOC_TRY_DECODER_CMD, vidioc_try_decoder_cmd, v4l_print_decoder_cmd, 0),
2109 IOCTL_INFO_FNC(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
2110 IOCTL_INFO_FNC(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
2111 IOCTL_INFO_FNC(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
2112 IOCTL_INFO_STD(VIDIOC_S_DV_TIMINGS, vidioc_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO),
2113 IOCTL_INFO_STD(VIDIOC_G_DV_TIMINGS, vidioc_g_dv_timings, v4l_print_dv_timings, 0),
2114 IOCTL_INFO_FNC(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
2115 IOCTL_INFO_FNC(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
2116 IOCTL_INFO_FNC(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
2117 IOCTL_INFO_FNC(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2118 IOCTL_INFO_FNC(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
2119 IOCTL_INFO_STD(VIDIOC_ENUM_DV_TIMINGS, vidioc_enum_dv_timings, v4l_print_enum_dv_timings, 0),
2120 IOCTL_INFO_STD(VIDIOC_QUERY_DV_TIMINGS, vidioc_query_dv_timings, v4l_print_dv_timings, 0),
2121 IOCTL_INFO_STD(VIDIOC_DV_TIMINGS_CAP, vidioc_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, type)),
2122 IOCTL_INFO_FNC(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
2123 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)),
2124 };
2125 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
2126
2127 bool v4l2_is_known_ioctl(unsigned int cmd)
2128 {
2129 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2130 return false;
2131 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
2132 }
2133
2134 struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd)
2135 {
2136 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2137 return vdev->lock;
2138 if (test_bit(_IOC_NR(cmd), vdev->disable_locking))
2139 return NULL;
2140 if (vdev->queue && vdev->queue->lock &&
2141 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
2142 return vdev->queue->lock;
2143 return vdev->lock;
2144 }
2145
2146 /* Common ioctl debug function. This function can be used by
2147 external ioctl messages as well as internal V4L ioctl */
2148 void v4l_printk_ioctl(const char *prefix, unsigned int cmd)
2149 {
2150 const char *dir, *type;
2151
2152 if (prefix)
2153 printk(KERN_DEBUG "%s: ", prefix);
2154
2155 switch (_IOC_TYPE(cmd)) {
2156 case 'd':
2157 type = "v4l2_int";
2158 break;
2159 case 'V':
2160 if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
2161 type = "v4l2";
2162 break;
2163 }
2164 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
2165 return;
2166 default:
2167 type = "unknown";
2168 break;
2169 }
2170
2171 switch (_IOC_DIR(cmd)) {
2172 case _IOC_NONE: dir = "--"; break;
2173 case _IOC_READ: dir = "r-"; break;
2174 case _IOC_WRITE: dir = "-w"; break;
2175 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
2176 default: dir = "*ERR*"; break;
2177 }
2178 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
2179 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
2180 }
2181 EXPORT_SYMBOL(v4l_printk_ioctl);
2182
2183 static long __video_do_ioctl(struct file *file,
2184 unsigned int cmd, void *arg)
2185 {
2186 struct video_device *vfd = video_devdata(file);
2187 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
2188 bool write_only = false;
2189 struct v4l2_ioctl_info default_info;
2190 const struct v4l2_ioctl_info *info;
2191 void *fh = file->private_data;
2192 struct v4l2_fh *vfh = NULL;
2193 int use_fh_prio = 0;
2194 int debug = vfd->debug;
2195 long ret = -ENOTTY;
2196
2197 if (ops == NULL) {
2198 pr_warn("%s: has no ioctl_ops.\n",
2199 video_device_node_name(vfd));
2200 return ret;
2201 }
2202
2203 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) {
2204 vfh = file->private_data;
2205 use_fh_prio = test_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
2206 }
2207
2208 if (v4l2_is_known_ioctl(cmd)) {
2209 info = &v4l2_ioctls[_IOC_NR(cmd)];
2210
2211 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) &&
2212 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
2213 goto done;
2214
2215 if (use_fh_prio && (info->flags & INFO_FL_PRIO)) {
2216 ret = v4l2_prio_check(vfd->prio, vfh->prio);
2217 if (ret)
2218 goto done;
2219 }
2220 } else {
2221 default_info.ioctl = cmd;
2222 default_info.flags = 0;
2223 default_info.debug = v4l_print_default;
2224 info = &default_info;
2225 }
2226
2227 write_only = _IOC_DIR(cmd) == _IOC_WRITE;
2228 if (info->flags & INFO_FL_STD) {
2229 typedef int (*vidioc_op)(struct file *file, void *fh, void *p);
2230 const void *p = vfd->ioctl_ops;
2231 const vidioc_op *vidioc = p + info->u.offset;
2232
2233 ret = (*vidioc)(file, fh, arg);
2234 } else if (info->flags & INFO_FL_FUNC) {
2235 ret = info->u.func(ops, file, fh, arg);
2236 } else if (!ops->vidioc_default) {
2237 ret = -ENOTTY;
2238 } else {
2239 ret = ops->vidioc_default(file, fh,
2240 use_fh_prio ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
2241 cmd, arg);
2242 }
2243
2244 done:
2245 if (debug) {
2246 v4l_printk_ioctl(video_device_node_name(vfd), cmd);
2247 if (ret < 0)
2248 pr_cont(": error %ld", ret);
2249 if (debug == V4L2_DEBUG_IOCTL)
2250 pr_cont("\n");
2251 else if (_IOC_DIR(cmd) == _IOC_NONE)
2252 info->debug(arg, write_only);
2253 else {
2254 pr_cont(": ");
2255 info->debug(arg, write_only);
2256 }
2257 }
2258
2259 return ret;
2260 }
2261
2262 static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
2263 void * __user *user_ptr, void ***kernel_ptr)
2264 {
2265 int ret = 0;
2266
2267 switch (cmd) {
2268 case VIDIOC_PREPARE_BUF:
2269 case VIDIOC_QUERYBUF:
2270 case VIDIOC_QBUF:
2271 case VIDIOC_DQBUF: {
2272 struct v4l2_buffer *buf = parg;
2273
2274 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
2275 if (buf->length > VIDEO_MAX_PLANES) {
2276 ret = -EINVAL;
2277 break;
2278 }
2279 *user_ptr = (void __user *)buf->m.planes;
2280 *kernel_ptr = (void *)&buf->m.planes;
2281 *array_size = sizeof(struct v4l2_plane) * buf->length;
2282 ret = 1;
2283 }
2284 break;
2285 }
2286
2287 case VIDIOC_G_EDID:
2288 case VIDIOC_S_EDID: {
2289 struct v4l2_edid *edid = parg;
2290
2291 if (edid->blocks) {
2292 if (edid->blocks > 256) {
2293 ret = -EINVAL;
2294 break;
2295 }
2296 *user_ptr = (void __user *)edid->edid;
2297 *kernel_ptr = (void *)&edid->edid;
2298 *array_size = edid->blocks * 128;
2299 ret = 1;
2300 }
2301 break;
2302 }
2303
2304 case VIDIOC_S_EXT_CTRLS:
2305 case VIDIOC_G_EXT_CTRLS:
2306 case VIDIOC_TRY_EXT_CTRLS: {
2307 struct v4l2_ext_controls *ctrls = parg;
2308
2309 if (ctrls->count != 0) {
2310 if (ctrls->count > V4L2_CID_MAX_CTRLS) {
2311 ret = -EINVAL;
2312 break;
2313 }
2314 *user_ptr = (void __user *)ctrls->controls;
2315 *kernel_ptr = (void *)&ctrls->controls;
2316 *array_size = sizeof(struct v4l2_ext_control)
2317 * ctrls->count;
2318 ret = 1;
2319 }
2320 break;
2321 }
2322 }
2323
2324 return ret;
2325 }
2326
2327 long
2328 video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
2329 v4l2_kioctl func)
2330 {
2331 char sbuf[128];
2332 void *mbuf = NULL;
2333 void *parg = (void *)arg;
2334 long err = -EINVAL;
2335 bool has_array_args;
2336 size_t array_size = 0;
2337 void __user *user_ptr = NULL;
2338 void **kernel_ptr = NULL;
2339
2340 /* Copy arguments into temp kernel buffer */
2341 if (_IOC_DIR(cmd) != _IOC_NONE) {
2342 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
2343 parg = sbuf;
2344 } else {
2345 /* too big to allocate from stack */
2346 mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
2347 if (NULL == mbuf)
2348 return -ENOMEM;
2349 parg = mbuf;
2350 }
2351
2352 err = -EFAULT;
2353 if (_IOC_DIR(cmd) & _IOC_WRITE) {
2354 unsigned int n = _IOC_SIZE(cmd);
2355
2356 /*
2357 * In some cases, only a few fields are used as input,
2358 * i.e. when the app sets "index" and then the driver
2359 * fills in the rest of the structure for the thing
2360 * with that index. We only need to copy up the first
2361 * non-input field.
2362 */
2363 if (v4l2_is_known_ioctl(cmd)) {
2364 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags;
2365 if (flags & INFO_FL_CLEAR_MASK)
2366 n = (flags & INFO_FL_CLEAR_MASK) >> 16;
2367 }
2368
2369 if (copy_from_user(parg, (void __user *)arg, n))
2370 goto out;
2371
2372 /* zero out anything we don't copy from userspace */
2373 if (n < _IOC_SIZE(cmd))
2374 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n);
2375 } else {
2376 /* read-only ioctl */
2377 memset(parg, 0, _IOC_SIZE(cmd));
2378 }
2379 }
2380
2381 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
2382 if (err < 0)
2383 goto out;
2384 has_array_args = err;
2385
2386 if (has_array_args) {
2387 /*
2388 * When adding new types of array args, make sure that the
2389 * parent argument to ioctl (which contains the pointer to the
2390 * array) fits into sbuf (so that mbuf will still remain
2391 * unused up to here).
2392 */
2393 mbuf = kmalloc(array_size, GFP_KERNEL);
2394 err = -ENOMEM;
2395 if (NULL == mbuf)
2396 goto out_array_args;
2397 err = -EFAULT;
2398 if (copy_from_user(mbuf, user_ptr, array_size))
2399 goto out_array_args;
2400 *kernel_ptr = mbuf;
2401 }
2402
2403 /* Handles IOCTL */
2404 err = func(file, cmd, parg);
2405 if (err == -ENOIOCTLCMD)
2406 err = -ENOTTY;
2407 if (err == 0) {
2408 if (cmd == VIDIOC_DQBUF)
2409 trace_v4l2_dqbuf(video_devdata(file)->minor, parg);
2410 else if (cmd == VIDIOC_QBUF)
2411 trace_v4l2_qbuf(video_devdata(file)->minor, parg);
2412 }
2413
2414 if (has_array_args) {
2415 *kernel_ptr = user_ptr;
2416 if (copy_to_user(user_ptr, mbuf, array_size))
2417 err = -EFAULT;
2418 goto out_array_args;
2419 }
2420 /* VIDIOC_QUERY_DV_TIMINGS can return an error, but still have valid
2421 results that must be returned. */
2422 if (err < 0 && cmd != VIDIOC_QUERY_DV_TIMINGS)
2423 goto out;
2424
2425 out_array_args:
2426 /* Copy results into user buffer */
2427 switch (_IOC_DIR(cmd)) {
2428 case _IOC_READ:
2429 case (_IOC_WRITE | _IOC_READ):
2430 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
2431 err = -EFAULT;
2432 break;
2433 }
2434
2435 out:
2436 kfree(mbuf);
2437 return err;
2438 }
2439 EXPORT_SYMBOL(video_usercopy);
2440
2441 long video_ioctl2(struct file *file,
2442 unsigned int cmd, unsigned long arg)
2443 {
2444 return video_usercopy(file, cmd, arg, __video_do_ioctl);
2445 }
2446 EXPORT_SYMBOL(video_ioctl2);
Linux with added FPC-III support