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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Video capture interface for Linux version 2
4 *
5 * A generic framework to process V4L2 ioctl commands.
6 *
7 * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1)
8 * Mauro Carvalho Chehab <mchehab@kernel.org> (version 2)
9 */
10
11#include <linux/mm.h>
12#include <linux/module.h>
13#include <linux/slab.h>
14#include <linux/types.h>
15#include <linux/kernel.h>
16#include <linux/version.h>
17
18#include <linux/videodev2.h>
19
20#include <media/v4l2-common.h>
21#include <media/v4l2-ioctl.h>
22#include <media/v4l2-ctrls.h>
23#include <media/v4l2-fh.h>
24#include <media/v4l2-event.h>
25#include <media/v4l2-device.h>
26#include <media/videobuf2-v4l2.h>
27#include <media/v4l2-mc.h>
28#include <media/v4l2-mem2mem.h>
29
30#include <trace/events/v4l2.h>
31
32/* Zero out the end of the struct pointed to by p. Everything after, but
33 * not including, the specified field is cleared. */
34#define CLEAR_AFTER_FIELD(p, field) \
35 memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \
36 0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field))
37
38#define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls)
39
40struct std_descr {
41 v4l2_std_id std;
42 const char *descr;
43};
44
45static const struct std_descr standards[] = {
46 { V4L2_STD_NTSC, "NTSC" },
47 { V4L2_STD_NTSC_M, "NTSC-M" },
48 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" },
49 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" },
50 { V4L2_STD_NTSC_443, "NTSC-443" },
51 { V4L2_STD_PAL, "PAL" },
52 { V4L2_STD_PAL_BG, "PAL-BG" },
53 { V4L2_STD_PAL_B, "PAL-B" },
54 { V4L2_STD_PAL_B1, "PAL-B1" },
55 { V4L2_STD_PAL_G, "PAL-G" },
56 { V4L2_STD_PAL_H, "PAL-H" },
57 { V4L2_STD_PAL_I, "PAL-I" },
58 { V4L2_STD_PAL_DK, "PAL-DK" },
59 { V4L2_STD_PAL_D, "PAL-D" },
60 { V4L2_STD_PAL_D1, "PAL-D1" },
61 { V4L2_STD_PAL_K, "PAL-K" },
62 { V4L2_STD_PAL_M, "PAL-M" },
63 { V4L2_STD_PAL_N, "PAL-N" },
64 { V4L2_STD_PAL_Nc, "PAL-Nc" },
65 { V4L2_STD_PAL_60, "PAL-60" },
66 { V4L2_STD_SECAM, "SECAM" },
67 { V4L2_STD_SECAM_B, "SECAM-B" },
68 { V4L2_STD_SECAM_G, "SECAM-G" },
69 { V4L2_STD_SECAM_H, "SECAM-H" },
70 { V4L2_STD_SECAM_DK, "SECAM-DK" },
71 { V4L2_STD_SECAM_D, "SECAM-D" },
72 { V4L2_STD_SECAM_K, "SECAM-K" },
73 { V4L2_STD_SECAM_K1, "SECAM-K1" },
74 { V4L2_STD_SECAM_L, "SECAM-L" },
75 { V4L2_STD_SECAM_LC, "SECAM-Lc" },
76 { 0, "Unknown" }
77};
78
79/* video4linux standard ID conversion to standard name
80 */
81const char *v4l2_norm_to_name(v4l2_std_id id)
82{
83 u32 myid = id;
84 int i;
85
86 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
87 64 bit comparisons. So, on that architecture, with some gcc
88 variants, compilation fails. Currently, the max value is 30bit wide.
89 */
90 BUG_ON(myid != id);
91
92 for (i = 0; standards[i].std; i++)
93 if (myid == standards[i].std)
94 break;
95 return standards[i].descr;
96}
97EXPORT_SYMBOL(v4l2_norm_to_name);
98
99/* Returns frame period for the given standard */
100void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod)
101{
102 if (id & V4L2_STD_525_60) {
103 frameperiod->numerator = 1001;
104 frameperiod->denominator = 30000;
105 } else {
106 frameperiod->numerator = 1;
107 frameperiod->denominator = 25;
108 }
109}
110EXPORT_SYMBOL(v4l2_video_std_frame_period);
111
112/* Fill in the fields of a v4l2_standard structure according to the
113 'id' and 'transmission' parameters. Returns negative on error. */
114int v4l2_video_std_construct(struct v4l2_standard *vs,
115 int id, const char *name)
116{
117 vs->id = id;
118 v4l2_video_std_frame_period(id, &vs->frameperiod);
119 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625;
120 strscpy(vs->name, name, sizeof(vs->name));
121 return 0;
122}
123EXPORT_SYMBOL(v4l2_video_std_construct);
124
125/* Fill in the fields of a v4l2_standard structure according to the
126 * 'id' and 'vs->index' parameters. Returns negative on error. */
127int v4l_video_std_enumstd(struct v4l2_standard *vs, v4l2_std_id id)
128{
129 v4l2_std_id curr_id = 0;
130 unsigned int index = vs->index, i, j = 0;
131 const char *descr = "";
132
133 /* Return -ENODATA if the id for the current input
134 or output is 0, meaning that it doesn't support this API. */
135 if (id == 0)
136 return -ENODATA;
137
138 /* Return norm array in a canonical way */
139 for (i = 0; i <= index && id; i++) {
140 /* last std value in the standards array is 0, so this
141 while always ends there since (id & 0) == 0. */
142 while ((id & standards[j].std) != standards[j].std)
143 j++;
144 curr_id = standards[j].std;
145 descr = standards[j].descr;
146 j++;
147 if (curr_id == 0)
148 break;
149 if (curr_id != V4L2_STD_PAL &&
150 curr_id != V4L2_STD_SECAM &&
151 curr_id != V4L2_STD_NTSC)
152 id &= ~curr_id;
153 }
154 if (i <= index)
155 return -EINVAL;
156
157 v4l2_video_std_construct(vs, curr_id, descr);
158 return 0;
159}
160
161/* ----------------------------------------------------------------- */
162/* some arrays for pretty-printing debug messages of enum types */
163
164const char *v4l2_field_names[] = {
165 [V4L2_FIELD_ANY] = "any",
166 [V4L2_FIELD_NONE] = "none",
167 [V4L2_FIELD_TOP] = "top",
168 [V4L2_FIELD_BOTTOM] = "bottom",
169 [V4L2_FIELD_INTERLACED] = "interlaced",
170 [V4L2_FIELD_SEQ_TB] = "seq-tb",
171 [V4L2_FIELD_SEQ_BT] = "seq-bt",
172 [V4L2_FIELD_ALTERNATE] = "alternate",
173 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",
174 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",
175};
176EXPORT_SYMBOL(v4l2_field_names);
177
178const char *v4l2_type_names[] = {
179 [0] = "0",
180 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap",
181 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay",
182 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out",
183 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap",
184 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out",
185 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",
186 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out",
187 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay",
188 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane",
189 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane",
190 [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap",
191 [V4L2_BUF_TYPE_SDR_OUTPUT] = "sdr-out",
192 [V4L2_BUF_TYPE_META_CAPTURE] = "meta-cap",
193 [V4L2_BUF_TYPE_META_OUTPUT] = "meta-out",
194};
195EXPORT_SYMBOL(v4l2_type_names);
196
197static const char *v4l2_memory_names[] = {
198 [V4L2_MEMORY_MMAP] = "mmap",
199 [V4L2_MEMORY_USERPTR] = "userptr",
200 [V4L2_MEMORY_OVERLAY] = "overlay",
201 [V4L2_MEMORY_DMABUF] = "dmabuf",
202};
203
204#define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown")
205
206/* ------------------------------------------------------------------ */
207/* debug help functions */
208
209static void v4l_print_querycap(const void *arg, bool write_only)
210{
211 const struct v4l2_capability *p = arg;
212
213 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, capabilities=0x%08x, device_caps=0x%08x\n",
214 (int)sizeof(p->driver), p->driver,
215 (int)sizeof(p->card), p->card,
216 (int)sizeof(p->bus_info), p->bus_info,
217 p->version, p->capabilities, p->device_caps);
218}
219
220static void v4l_print_enuminput(const void *arg, bool write_only)
221{
222 const struct v4l2_input *p = arg;
223
224 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, std=0x%08Lx, status=0x%x, capabilities=0x%x\n",
225 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
226 p->tuner, (unsigned long long)p->std, p->status,
227 p->capabilities);
228}
229
230static void v4l_print_enumoutput(const void *arg, bool write_only)
231{
232 const struct v4l2_output *p = arg;
233
234 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, modulator=%u, std=0x%08Lx, capabilities=0x%x\n",
235 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
236 p->modulator, (unsigned long long)p->std, p->capabilities);
237}
238
239static void v4l_print_audio(const void *arg, bool write_only)
240{
241 const struct v4l2_audio *p = arg;
242
243 if (write_only)
244 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode);
245 else
246 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
247 p->index, (int)sizeof(p->name), p->name,
248 p->capability, p->mode);
249}
250
251static void v4l_print_audioout(const void *arg, bool write_only)
252{
253 const struct v4l2_audioout *p = arg;
254
255 if (write_only)
256 pr_cont("index=%u\n", p->index);
257 else
258 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
259 p->index, (int)sizeof(p->name), p->name,
260 p->capability, p->mode);
261}
262
263static void v4l_print_fmtdesc(const void *arg, bool write_only)
264{
265 const struct v4l2_fmtdesc *p = arg;
266
267 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%c%c%c%c, description='%.*s'\n",
268 p->index, prt_names(p->type, v4l2_type_names),
269 p->flags, (p->pixelformat & 0xff),
270 (p->pixelformat >> 8) & 0xff,
271 (p->pixelformat >> 16) & 0xff,
272 (p->pixelformat >> 24) & 0xff,
273 (int)sizeof(p->description), p->description);
274}
275
276static void v4l_print_format(const void *arg, bool write_only)
277{
278 const struct v4l2_format *p = arg;
279 const struct v4l2_pix_format *pix;
280 const struct v4l2_pix_format_mplane *mp;
281 const struct v4l2_vbi_format *vbi;
282 const struct v4l2_sliced_vbi_format *sliced;
283 const struct v4l2_window *win;
284 const struct v4l2_sdr_format *sdr;
285 const struct v4l2_meta_format *meta;
286 u32 planes;
287 unsigned i;
288
289 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
290 switch (p->type) {
291 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
292 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
293 pix = &p->fmt.pix;
294 pr_cont(", width=%u, height=%u, pixelformat=%c%c%c%c, field=%s, bytesperline=%u, sizeimage=%u, colorspace=%d, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",
295 pix->width, pix->height,
296 (pix->pixelformat & 0xff),
297 (pix->pixelformat >> 8) & 0xff,
298 (pix->pixelformat >> 16) & 0xff,
299 (pix->pixelformat >> 24) & 0xff,
300 prt_names(pix->field, v4l2_field_names),
301 pix->bytesperline, pix->sizeimage,
302 pix->colorspace, pix->flags, pix->ycbcr_enc,
303 pix->quantization, pix->xfer_func);
304 break;
305 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
306 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
307 mp = &p->fmt.pix_mp;
308 pr_cont(", width=%u, height=%u, format=%c%c%c%c, field=%s, colorspace=%d, num_planes=%u, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",
309 mp->width, mp->height,
310 (mp->pixelformat & 0xff),
311 (mp->pixelformat >> 8) & 0xff,
312 (mp->pixelformat >> 16) & 0xff,
313 (mp->pixelformat >> 24) & 0xff,
314 prt_names(mp->field, v4l2_field_names),
315 mp->colorspace, mp->num_planes, mp->flags,
316 mp->ycbcr_enc, mp->quantization, mp->xfer_func);
317 planes = min_t(u32, mp->num_planes, VIDEO_MAX_PLANES);
318 for (i = 0; i < planes; i++)
319 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i,
320 mp->plane_fmt[i].bytesperline,
321 mp->plane_fmt[i].sizeimage);
322 break;
323 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
324 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
325 win = &p->fmt.win;
326 /* Note: we can't print the clip list here since the clips
327 * pointer is a userspace pointer, not a kernelspace
328 * pointer. */
329 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",
330 win->w.width, win->w.height, win->w.left, win->w.top,
331 prt_names(win->field, v4l2_field_names),
332 win->chromakey, win->clipcount, win->clips,
333 win->bitmap, win->global_alpha);
334 break;
335 case V4L2_BUF_TYPE_VBI_CAPTURE:
336 case V4L2_BUF_TYPE_VBI_OUTPUT:
337 vbi = &p->fmt.vbi;
338 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n",
339 vbi->sampling_rate, vbi->offset,
340 vbi->samples_per_line,
341 (vbi->sample_format & 0xff),
342 (vbi->sample_format >> 8) & 0xff,
343 (vbi->sample_format >> 16) & 0xff,
344 (vbi->sample_format >> 24) & 0xff,
345 vbi->start[0], vbi->start[1],
346 vbi->count[0], vbi->count[1]);
347 break;
348 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
349 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
350 sliced = &p->fmt.sliced;
351 pr_cont(", service_set=0x%08x, io_size=%d\n",
352 sliced->service_set, sliced->io_size);
353 for (i = 0; i < 24; i++)
354 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
355 sliced->service_lines[0][i],
356 sliced->service_lines[1][i]);
357 break;
358 case V4L2_BUF_TYPE_SDR_CAPTURE:
359 case V4L2_BUF_TYPE_SDR_OUTPUT:
360 sdr = &p->fmt.sdr;
361 pr_cont(", pixelformat=%c%c%c%c\n",
362 (sdr->pixelformat >> 0) & 0xff,
363 (sdr->pixelformat >> 8) & 0xff,
364 (sdr->pixelformat >> 16) & 0xff,
365 (sdr->pixelformat >> 24) & 0xff);
366 break;
367 case V4L2_BUF_TYPE_META_CAPTURE:
368 case V4L2_BUF_TYPE_META_OUTPUT:
369 meta = &p->fmt.meta;
370 pr_cont(", dataformat=%c%c%c%c, buffersize=%u\n",
371 (meta->dataformat >> 0) & 0xff,
372 (meta->dataformat >> 8) & 0xff,
373 (meta->dataformat >> 16) & 0xff,
374 (meta->dataformat >> 24) & 0xff,
375 meta->buffersize);
376 break;
377 }
378}
379
380static void v4l_print_framebuffer(const void *arg, bool write_only)
381{
382 const struct v4l2_framebuffer *p = arg;
383
384 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, height=%u, pixelformat=%c%c%c%c, bytesperline=%u, sizeimage=%u, colorspace=%d\n",
385 p->capability, p->flags, p->base,
386 p->fmt.width, p->fmt.height,
387 (p->fmt.pixelformat & 0xff),
388 (p->fmt.pixelformat >> 8) & 0xff,
389 (p->fmt.pixelformat >> 16) & 0xff,
390 (p->fmt.pixelformat >> 24) & 0xff,
391 p->fmt.bytesperline, p->fmt.sizeimage,
392 p->fmt.colorspace);
393}
394
395static void v4l_print_buftype(const void *arg, bool write_only)
396{
397 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names));
398}
399
400static void v4l_print_modulator(const void *arg, bool write_only)
401{
402 const struct v4l2_modulator *p = arg;
403
404 if (write_only)
405 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans);
406 else
407 pr_cont("index=%u, name=%.*s, capability=0x%x, rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
408 p->index, (int)sizeof(p->name), p->name, p->capability,
409 p->rangelow, p->rangehigh, p->txsubchans);
410}
411
412static void v4l_print_tuner(const void *arg, bool write_only)
413{
414 const struct v4l2_tuner *p = arg;
415
416 if (write_only)
417 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode);
418 else
419 pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, rangelow=%u, rangehigh=%u, signal=%u, afc=%d, rxsubchans=0x%x, audmode=%u\n",
420 p->index, (int)sizeof(p->name), p->name, p->type,
421 p->capability, p->rangelow,
422 p->rangehigh, p->signal, p->afc,
423 p->rxsubchans, p->audmode);
424}
425
426static void v4l_print_frequency(const void *arg, bool write_only)
427{
428 const struct v4l2_frequency *p = arg;
429
430 pr_cont("tuner=%u, type=%u, frequency=%u\n",
431 p->tuner, p->type, p->frequency);
432}
433
434static void v4l_print_standard(const void *arg, bool write_only)
435{
436 const struct v4l2_standard *p = arg;
437
438 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, framelines=%u\n",
439 p->index,
440 (unsigned long long)p->id, (int)sizeof(p->name), p->name,
441 p->frameperiod.numerator,
442 p->frameperiod.denominator,
443 p->framelines);
444}
445
446static void v4l_print_std(const void *arg, bool write_only)
447{
448 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg);
449}
450
451static void v4l_print_hw_freq_seek(const void *arg, bool write_only)
452{
453 const struct v4l2_hw_freq_seek *p = arg;
454
455 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, rangelow=%u, rangehigh=%u\n",
456 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing,
457 p->rangelow, p->rangehigh);
458}
459
460static void v4l_print_requestbuffers(const void *arg, bool write_only)
461{
462 const struct v4l2_requestbuffers *p = arg;
463
464 pr_cont("count=%d, type=%s, memory=%s\n",
465 p->count,
466 prt_names(p->type, v4l2_type_names),
467 prt_names(p->memory, v4l2_memory_names));
468}
469
470static void v4l_print_buffer(const void *arg, bool write_only)
471{
472 const struct v4l2_buffer *p = arg;
473 const struct v4l2_timecode *tc = &p->timecode;
474 const struct v4l2_plane *plane;
475 int i;
476
477 pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, request_fd=%d, flags=0x%08x, field=%s, sequence=%d, memory=%s",
478 p->timestamp.tv_sec / 3600,
479 (int)(p->timestamp.tv_sec / 60) % 60,
480 (int)(p->timestamp.tv_sec % 60),
481 (long)p->timestamp.tv_usec,
482 p->index,
483 prt_names(p->type, v4l2_type_names), p->request_fd,
484 p->flags, prt_names(p->field, v4l2_field_names),
485 p->sequence, prt_names(p->memory, v4l2_memory_names));
486
487 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
488 pr_cont("\n");
489 for (i = 0; i < p->length; ++i) {
490 plane = &p->m.planes[i];
491 printk(KERN_DEBUG
492 "plane %d: bytesused=%d, data_offset=0x%08x, offset/userptr=0x%lx, length=%d\n",
493 i, plane->bytesused, plane->data_offset,
494 plane->m.userptr, plane->length);
495 }
496 } else {
497 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n",
498 p->bytesused, p->m.userptr, p->length);
499 }
500
501 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, flags=0x%08x, frames=%d, userbits=0x%08x\n",
502 tc->hours, tc->minutes, tc->seconds,
503 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
504}
505
506static void v4l_print_exportbuffer(const void *arg, bool write_only)
507{
508 const struct v4l2_exportbuffer *p = arg;
509
510 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n",
511 p->fd, prt_names(p->type, v4l2_type_names),
512 p->index, p->plane, p->flags);
513}
514
515static void v4l_print_create_buffers(const void *arg, bool write_only)
516{
517 const struct v4l2_create_buffers *p = arg;
518
519 pr_cont("index=%d, count=%d, memory=%s, ",
520 p->index, p->count,
521 prt_names(p->memory, v4l2_memory_names));
522 v4l_print_format(&p->format, write_only);
523}
524
525static void v4l_print_streamparm(const void *arg, bool write_only)
526{
527 const struct v4l2_streamparm *p = arg;
528
529 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
530
531 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
532 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
533 const struct v4l2_captureparm *c = &p->parm.capture;
534
535 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, extendedmode=%d, readbuffers=%d\n",
536 c->capability, c->capturemode,
537 c->timeperframe.numerator, c->timeperframe.denominator,
538 c->extendedmode, c->readbuffers);
539 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
540 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
541 const struct v4l2_outputparm *c = &p->parm.output;
542
543 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, extendedmode=%d, writebuffers=%d\n",
544 c->capability, c->outputmode,
545 c->timeperframe.numerator, c->timeperframe.denominator,
546 c->extendedmode, c->writebuffers);
547 } else {
548 pr_cont("\n");
549 }
550}
551
552static void v4l_print_queryctrl(const void *arg, bool write_only)
553{
554 const struct v4l2_queryctrl *p = arg;
555
556 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, step=%d, default=%d, flags=0x%08x\n",
557 p->id, p->type, (int)sizeof(p->name), p->name,
558 p->minimum, p->maximum,
559 p->step, p->default_value, p->flags);
560}
561
562static void v4l_print_query_ext_ctrl(const void *arg, bool write_only)
563{
564 const struct v4l2_query_ext_ctrl *p = arg;
565
566 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%lld/%lld, step=%lld, default=%lld, flags=0x%08x, elem_size=%u, elems=%u, nr_of_dims=%u, dims=%u,%u,%u,%u\n",
567 p->id, p->type, (int)sizeof(p->name), p->name,
568 p->minimum, p->maximum,
569 p->step, p->default_value, p->flags,
570 p->elem_size, p->elems, p->nr_of_dims,
571 p->dims[0], p->dims[1], p->dims[2], p->dims[3]);
572}
573
574static void v4l_print_querymenu(const void *arg, bool write_only)
575{
576 const struct v4l2_querymenu *p = arg;
577
578 pr_cont("id=0x%x, index=%d\n", p->id, p->index);
579}
580
581static void v4l_print_control(const void *arg, bool write_only)
582{
583 const struct v4l2_control *p = arg;
584
585 pr_cont("id=0x%x, value=%d\n", p->id, p->value);
586}
587
588static void v4l_print_ext_controls(const void *arg, bool write_only)
589{
590 const struct v4l2_ext_controls *p = arg;
591 int i;
592
593 pr_cont("which=0x%x, count=%d, error_idx=%d, request_fd=%d",
594 p->which, p->count, p->error_idx, p->request_fd);
595 for (i = 0; i < p->count; i++) {
596 if (!p->controls[i].size)
597 pr_cont(", id/val=0x%x/0x%x",
598 p->controls[i].id, p->controls[i].value);
599 else
600 pr_cont(", id/size=0x%x/%u",
601 p->controls[i].id, p->controls[i].size);
602 }
603 pr_cont("\n");
604}
605
606static void v4l_print_cropcap(const void *arg, bool write_only)
607{
608 const struct v4l2_cropcap *p = arg;
609
610 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, defrect wxh=%dx%d, x,y=%d,%d, pixelaspect %d/%d\n",
611 prt_names(p->type, v4l2_type_names),
612 p->bounds.width, p->bounds.height,
613 p->bounds.left, p->bounds.top,
614 p->defrect.width, p->defrect.height,
615 p->defrect.left, p->defrect.top,
616 p->pixelaspect.numerator, p->pixelaspect.denominator);
617}
618
619static void v4l_print_crop(const void *arg, bool write_only)
620{
621 const struct v4l2_crop *p = arg;
622
623 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n",
624 prt_names(p->type, v4l2_type_names),
625 p->c.width, p->c.height,
626 p->c.left, p->c.top);
627}
628
629static void v4l_print_selection(const void *arg, bool write_only)
630{
631 const struct v4l2_selection *p = arg;
632
633 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n",
634 prt_names(p->type, v4l2_type_names),
635 p->target, p->flags,
636 p->r.width, p->r.height, p->r.left, p->r.top);
637}
638
639static void v4l_print_jpegcompression(const void *arg, bool write_only)
640{
641 const struct v4l2_jpegcompression *p = arg;
642
643 pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n",
644 p->quality, p->APPn, p->APP_len,
645 p->COM_len, p->jpeg_markers);
646}
647
648static void v4l_print_enc_idx(const void *arg, bool write_only)
649{
650 const struct v4l2_enc_idx *p = arg;
651
652 pr_cont("entries=%d, entries_cap=%d\n",
653 p->entries, p->entries_cap);
654}
655
656static void v4l_print_encoder_cmd(const void *arg, bool write_only)
657{
658 const struct v4l2_encoder_cmd *p = arg;
659
660 pr_cont("cmd=%d, flags=0x%x\n",
661 p->cmd, p->flags);
662}
663
664static void v4l_print_decoder_cmd(const void *arg, bool write_only)
665{
666 const struct v4l2_decoder_cmd *p = arg;
667
668 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags);
669
670 if (p->cmd == V4L2_DEC_CMD_START)
671 pr_info("speed=%d, format=%u\n",
672 p->start.speed, p->start.format);
673 else if (p->cmd == V4L2_DEC_CMD_STOP)
674 pr_info("pts=%llu\n", p->stop.pts);
675}
676
677static void v4l_print_dbg_chip_info(const void *arg, bool write_only)
678{
679 const struct v4l2_dbg_chip_info *p = arg;
680
681 pr_cont("type=%u, ", p->match.type);
682 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
683 pr_cont("name=%.*s, ",
684 (int)sizeof(p->match.name), p->match.name);
685 else
686 pr_cont("addr=%u, ", p->match.addr);
687 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name);
688}
689
690static void v4l_print_dbg_register(const void *arg, bool write_only)
691{
692 const struct v4l2_dbg_register *p = arg;
693
694 pr_cont("type=%u, ", p->match.type);
695 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
696 pr_cont("name=%.*s, ",
697 (int)sizeof(p->match.name), p->match.name);
698 else
699 pr_cont("addr=%u, ", p->match.addr);
700 pr_cont("reg=0x%llx, val=0x%llx\n",
701 p->reg, p->val);
702}
703
704static void v4l_print_dv_timings(const void *arg, bool write_only)
705{
706 const struct v4l2_dv_timings *p = arg;
707
708 switch (p->type) {
709 case V4L2_DV_BT_656_1120:
710 pr_cont("type=bt-656/1120, interlaced=%u, pixelclock=%llu, width=%u, height=%u, polarities=0x%x, hfrontporch=%u, hsync=%u, hbackporch=%u, vfrontporch=%u, vsync=%u, vbackporch=%u, il_vfrontporch=%u, il_vsync=%u, il_vbackporch=%u, standards=0x%x, flags=0x%x\n",
711 p->bt.interlaced, p->bt.pixelclock,
712 p->bt.width, p->bt.height,
713 p->bt.polarities, p->bt.hfrontporch,
714 p->bt.hsync, p->bt.hbackporch,
715 p->bt.vfrontporch, p->bt.vsync,
716 p->bt.vbackporch, p->bt.il_vfrontporch,
717 p->bt.il_vsync, p->bt.il_vbackporch,
718 p->bt.standards, p->bt.flags);
719 break;
720 default:
721 pr_cont("type=%d\n", p->type);
722 break;
723 }
724}
725
726static void v4l_print_enum_dv_timings(const void *arg, bool write_only)
727{
728 const struct v4l2_enum_dv_timings *p = arg;
729
730 pr_cont("index=%u, ", p->index);
731 v4l_print_dv_timings(&p->timings, write_only);
732}
733
734static void v4l_print_dv_timings_cap(const void *arg, bool write_only)
735{
736 const struct v4l2_dv_timings_cap *p = arg;
737
738 switch (p->type) {
739 case V4L2_DV_BT_656_1120:
740 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
741 p->bt.min_width, p->bt.max_width,
742 p->bt.min_height, p->bt.max_height,
743 p->bt.min_pixelclock, p->bt.max_pixelclock,
744 p->bt.standards, p->bt.capabilities);
745 break;
746 default:
747 pr_cont("type=%u\n", p->type);
748 break;
749 }
750}
751
752static void v4l_print_frmsizeenum(const void *arg, bool write_only)
753{
754 const struct v4l2_frmsizeenum *p = arg;
755
756 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u",
757 p->index,
758 (p->pixel_format & 0xff),
759 (p->pixel_format >> 8) & 0xff,
760 (p->pixel_format >> 16) & 0xff,
761 (p->pixel_format >> 24) & 0xff,
762 p->type);
763 switch (p->type) {
764 case V4L2_FRMSIZE_TYPE_DISCRETE:
765 pr_cont(", wxh=%ux%u\n",
766 p->discrete.width, p->discrete.height);
767 break;
768 case V4L2_FRMSIZE_TYPE_STEPWISE:
769 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n",
770 p->stepwise.min_width,
771 p->stepwise.min_height,
772 p->stepwise.max_width,
773 p->stepwise.max_height,
774 p->stepwise.step_width,
775 p->stepwise.step_height);
776 break;
777 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
778 /* fall through */
779 default:
780 pr_cont("\n");
781 break;
782 }
783}
784
785static void v4l_print_frmivalenum(const void *arg, bool write_only)
786{
787 const struct v4l2_frmivalenum *p = arg;
788
789 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u",
790 p->index,
791 (p->pixel_format & 0xff),
792 (p->pixel_format >> 8) & 0xff,
793 (p->pixel_format >> 16) & 0xff,
794 (p->pixel_format >> 24) & 0xff,
795 p->width, p->height, p->type);
796 switch (p->type) {
797 case V4L2_FRMIVAL_TYPE_DISCRETE:
798 pr_cont(", fps=%d/%d\n",
799 p->discrete.numerator,
800 p->discrete.denominator);
801 break;
802 case V4L2_FRMIVAL_TYPE_STEPWISE:
803 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n",
804 p->stepwise.min.numerator,
805 p->stepwise.min.denominator,
806 p->stepwise.max.numerator,
807 p->stepwise.max.denominator,
808 p->stepwise.step.numerator,
809 p->stepwise.step.denominator);
810 break;
811 case V4L2_FRMIVAL_TYPE_CONTINUOUS:
812 /* fall through */
813 default:
814 pr_cont("\n");
815 break;
816 }
817}
818
819static void v4l_print_event(const void *arg, bool write_only)
820{
821 const struct v4l2_event *p = arg;
822 const struct v4l2_event_ctrl *c;
823
824 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%lu.%9.9lu\n",
825 p->type, p->pending, p->sequence, p->id,
826 p->timestamp.tv_sec, p->timestamp.tv_nsec);
827 switch (p->type) {
828 case V4L2_EVENT_VSYNC:
829 printk(KERN_DEBUG "field=%s\n",
830 prt_names(p->u.vsync.field, v4l2_field_names));
831 break;
832 case V4L2_EVENT_CTRL:
833 c = &p->u.ctrl;
834 printk(KERN_DEBUG "changes=0x%x, type=%u, ",
835 c->changes, c->type);
836 if (c->type == V4L2_CTRL_TYPE_INTEGER64)
837 pr_cont("value64=%lld, ", c->value64);
838 else
839 pr_cont("value=%d, ", c->value);
840 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n",
841 c->flags, c->minimum, c->maximum,
842 c->step, c->default_value);
843 break;
844 case V4L2_EVENT_FRAME_SYNC:
845 pr_cont("frame_sequence=%u\n",
846 p->u.frame_sync.frame_sequence);
847 break;
848 }
849}
850
851static void v4l_print_event_subscription(const void *arg, bool write_only)
852{
853 const struct v4l2_event_subscription *p = arg;
854
855 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
856 p->type, p->id, p->flags);
857}
858
859static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only)
860{
861 const struct v4l2_sliced_vbi_cap *p = arg;
862 int i;
863
864 pr_cont("type=%s, service_set=0x%08x\n",
865 prt_names(p->type, v4l2_type_names), p->service_set);
866 for (i = 0; i < 24; i++)
867 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
868 p->service_lines[0][i],
869 p->service_lines[1][i]);
870}
871
872static void v4l_print_freq_band(const void *arg, bool write_only)
873{
874 const struct v4l2_frequency_band *p = arg;
875
876 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n",
877 p->tuner, p->type, p->index,
878 p->capability, p->rangelow,
879 p->rangehigh, p->modulation);
880}
881
882static void v4l_print_edid(const void *arg, bool write_only)
883{
884 const struct v4l2_edid *p = arg;
885
886 pr_cont("pad=%u, start_block=%u, blocks=%u\n",
887 p->pad, p->start_block, p->blocks);
888}
889
890static void v4l_print_u32(const void *arg, bool write_only)
891{
892 pr_cont("value=%u\n", *(const u32 *)arg);
893}
894
895static void v4l_print_newline(const void *arg, bool write_only)
896{
897 pr_cont("\n");
898}
899
900static void v4l_print_default(const void *arg, bool write_only)
901{
902 pr_cont("driver-specific ioctl\n");
903}
904
905static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
906{
907 __u32 i;
908
909 /* zero the reserved fields */
910 c->reserved[0] = 0;
911 for (i = 0; i < c->count; i++)
912 c->controls[i].reserved2[0] = 0;
913
914 /* V4L2_CID_PRIVATE_BASE cannot be used as control class
915 when using extended controls.
916 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
917 is it allowed for backwards compatibility.
918 */
919 if (!allow_priv && c->which == V4L2_CID_PRIVATE_BASE)
920 return 0;
921 if (!c->which)
922 return 1;
923 /* Check that all controls are from the same control class. */
924 for (i = 0; i < c->count; i++) {
925 if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) {
926 c->error_idx = i;
927 return 0;
928 }
929 }
930 return 1;
931}
932
933static int check_fmt(struct file *file, enum v4l2_buf_type type)
934{
935 struct video_device *vfd = video_devdata(file);
936 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
937 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
938 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI;
939 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
940 bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH;
941 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
942 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
943
944 if (ops == NULL)
945 return -EINVAL;
946
947 switch (type) {
948 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
949 if ((is_vid || is_tch) && is_rx &&
950 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane))
951 return 0;
952 break;
953 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
954 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_cap_mplane)
955 return 0;
956 break;
957 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
958 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay)
959 return 0;
960 break;
961 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
962 if (is_vid && is_tx &&
963 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane))
964 return 0;
965 break;
966 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
967 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane)
968 return 0;
969 break;
970 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
971 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay)
972 return 0;
973 break;
974 case V4L2_BUF_TYPE_VBI_CAPTURE:
975 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap)
976 return 0;
977 break;
978 case V4L2_BUF_TYPE_VBI_OUTPUT:
979 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out)
980 return 0;
981 break;
982 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
983 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap)
984 return 0;
985 break;
986 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
987 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out)
988 return 0;
989 break;
990 case V4L2_BUF_TYPE_SDR_CAPTURE:
991 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap)
992 return 0;
993 break;
994 case V4L2_BUF_TYPE_SDR_OUTPUT:
995 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out)
996 return 0;
997 break;
998 case V4L2_BUF_TYPE_META_CAPTURE:
999 if (is_vid && is_rx && ops->vidioc_g_fmt_meta_cap)
1000 return 0;
1001 break;
1002 case V4L2_BUF_TYPE_META_OUTPUT:
1003 if (is_vid && is_tx && ops->vidioc_g_fmt_meta_out)
1004 return 0;
1005 break;
1006 default:
1007 break;
1008 }
1009 return -EINVAL;
1010}
1011
1012static void v4l_sanitize_format(struct v4l2_format *fmt)
1013{
1014 unsigned int offset;
1015
1016 /* Make sure num_planes is not bogus */
1017 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ||
1018 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
1019 fmt->fmt.pix_mp.num_planes = min_t(u32, fmt->fmt.pix_mp.num_planes,
1020 VIDEO_MAX_PLANES);
1021
1022 /*
1023 * The v4l2_pix_format structure has been extended with fields that were
1024 * not previously required to be set to zero by applications. The priv
1025 * field, when set to a magic value, indicates the the extended fields
1026 * are valid. Otherwise they will contain undefined values. To simplify
1027 * the API towards drivers zero the extended fields and set the priv
1028 * field to the magic value when the extended pixel format structure
1029 * isn't used by applications.
1030 */
1031
1032 if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1033 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1034 return;
1035
1036 if (fmt->fmt.pix.priv == V4L2_PIX_FMT_PRIV_MAGIC)
1037 return;
1038
1039 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1040
1041 offset = offsetof(struct v4l2_pix_format, priv)
1042 + sizeof(fmt->fmt.pix.priv);
1043 memset(((void *)&fmt->fmt.pix) + offset, 0,
1044 sizeof(fmt->fmt.pix) - offset);
1045}
1046
1047static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
1048 struct file *file, void *fh, void *arg)
1049{
1050 struct v4l2_capability *cap = (struct v4l2_capability *)arg;
1051 struct video_device *vfd = video_devdata(file);
1052 int ret;
1053
1054 cap->version = LINUX_VERSION_CODE;
1055 cap->device_caps = vfd->device_caps;
1056 cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS;
1057
1058 ret = ops->vidioc_querycap(file, fh, cap);
1059
1060 /*
1061 * Drivers must not change device_caps, so check for this and
1062 * warn if this happened.
1063 */
1064 WARN_ON(cap->device_caps != vfd->device_caps);
1065 /*
1066 * Check that capabilities is a superset of
1067 * vfd->device_caps | V4L2_CAP_DEVICE_CAPS
1068 */
1069 WARN_ON((cap->capabilities &
1070 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)) !=
1071 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS));
1072 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT;
1073 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT;
1074
1075 return ret;
1076}
1077
1078static int v4l_s_input(const struct v4l2_ioctl_ops *ops,
1079 struct file *file, void *fh, void *arg)
1080{
1081 struct video_device *vfd = video_devdata(file);
1082 int ret;
1083
1084 ret = v4l_enable_media_source(vfd);
1085 if (ret)
1086 return ret;
1087 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg);
1088}
1089
1090static int v4l_s_output(const struct v4l2_ioctl_ops *ops,
1091 struct file *file, void *fh, void *arg)
1092{
1093 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg);
1094}
1095
1096static int v4l_g_priority(const struct v4l2_ioctl_ops *ops,
1097 struct file *file, void *fh, void *arg)
1098{
1099 struct video_device *vfd;
1100 u32 *p = arg;
1101
1102 vfd = video_devdata(file);
1103 *p = v4l2_prio_max(vfd->prio);
1104 return 0;
1105}
1106
1107static int v4l_s_priority(const struct v4l2_ioctl_ops *ops,
1108 struct file *file, void *fh, void *arg)
1109{
1110 struct video_device *vfd;
1111 struct v4l2_fh *vfh;
1112 u32 *p = arg;
1113
1114 vfd = video_devdata(file);
1115 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
1116 return -ENOTTY;
1117 vfh = file->private_data;
1118 return v4l2_prio_change(vfd->prio, &vfh->prio, *p);
1119}
1120
1121static int v4l_enuminput(const struct v4l2_ioctl_ops *ops,
1122 struct file *file, void *fh, void *arg)
1123{
1124 struct video_device *vfd = video_devdata(file);
1125 struct v4l2_input *p = arg;
1126
1127 /*
1128 * We set the flags for CAP_DV_TIMINGS &
1129 * CAP_STD here based on ioctl handler provided by the
1130 * driver. If the driver doesn't support these
1131 * for a specific input, it must override these flags.
1132 */
1133 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1134 p->capabilities |= V4L2_IN_CAP_STD;
1135
1136 return ops->vidioc_enum_input(file, fh, p);
1137}
1138
1139static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops,
1140 struct file *file, void *fh, void *arg)
1141{
1142 struct video_device *vfd = video_devdata(file);
1143 struct v4l2_output *p = arg;
1144
1145 /*
1146 * We set the flags for CAP_DV_TIMINGS &
1147 * CAP_STD here based on ioctl handler provided by the
1148 * driver. If the driver doesn't support these
1149 * for a specific output, it must override these flags.
1150 */
1151 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1152 p->capabilities |= V4L2_OUT_CAP_STD;
1153
1154 return ops->vidioc_enum_output(file, fh, p);
1155}
1156
1157static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
1158{
1159 const unsigned sz = sizeof(fmt->description);
1160 const char *descr = NULL;
1161 u32 flags = 0;
1162
1163 /*
1164 * We depart from the normal coding style here since the descriptions
1165 * should be aligned so it is easy to see which descriptions will be
1166 * longer than 31 characters (the max length for a description).
1167 * And frankly, this is easier to read anyway.
1168 *
1169 * Note that gcc will use O(log N) comparisons to find the right case.
1170 */
1171 switch (fmt->pixelformat) {
1172 /* Max description length mask: descr = "0123456789012345678901234567890" */
1173 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break;
1174 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break;
1175 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break;
1176 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break;
1177 case V4L2_PIX_FMT_RGBA444: descr = "16-bit RGBA 4-4-4-4"; break;
1178 case V4L2_PIX_FMT_RGBX444: descr = "16-bit RGBX 4-4-4-4"; break;
1179 case V4L2_PIX_FMT_ABGR444: descr = "16-bit ABGR 4-4-4-4"; break;
1180 case V4L2_PIX_FMT_XBGR444: descr = "16-bit XBGR 4-4-4-4"; break;
1181 case V4L2_PIX_FMT_BGRA444: descr = "16-bit BGRA 4-4-4-4"; break;
1182 case V4L2_PIX_FMT_BGRX444: descr = "16-bit BGRX 4-4-4-4"; break;
1183 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break;
1184 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break;
1185 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break;
1186 case V4L2_PIX_FMT_ABGR555: descr = "16-bit ABGR 1-5-5-5"; break;
1187 case V4L2_PIX_FMT_XBGR555: descr = "16-bit XBGR 1-5-5-5"; break;
1188 case V4L2_PIX_FMT_RGBA555: descr = "16-bit RGBA 5-5-5-1"; break;
1189 case V4L2_PIX_FMT_RGBX555: descr = "16-bit RGBX 5-5-5-1"; break;
1190 case V4L2_PIX_FMT_BGRA555: descr = "16-bit BGRA 5-5-5-1"; break;
1191 case V4L2_PIX_FMT_BGRX555: descr = "16-bit BGRX 5-5-5-1"; break;
1192 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break;
1193 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break;
1194 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break;
1195 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break;
1196 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break;
1197 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break;
1198 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break;
1199 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break;
1200 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break;
1201 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break;
1202 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break;
1203 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break;
1204 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break;
1205 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break;
1206 case V4L2_PIX_FMT_BGRA32: descr = "32-bit ABGR 8-8-8-8"; break;
1207 case V4L2_PIX_FMT_BGRX32: descr = "32-bit XBGR 8-8-8-8"; break;
1208 case V4L2_PIX_FMT_RGBA32: descr = "32-bit RGBA 8-8-8-8"; break;
1209 case V4L2_PIX_FMT_RGBX32: descr = "32-bit RGBX 8-8-8-8"; break;
1210 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break;
1211 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break;
1212 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break;
1213 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break;
1214 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break;
1215 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break;
1216 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break;
1217 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break;
1218 case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break;
1219 case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break;
1220 case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break;
1221 case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break;
1222 case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break;
1223 case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break;
1224 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break;
1225 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break;
1226 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break;
1227 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break;
1228 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break;
1229 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break;
1230 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break;
1231 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break;
1232 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break;
1233 case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break;
1234 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break;
1235 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break;
1236 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break;
1237 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break;
1238 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break;
1239 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break;
1240 case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break;
1241 case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break;
1242 case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break;
1243 case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break;
1244 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break;
1245 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break;
1246 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break;
1247 case V4L2_PIX_FMT_HM12: descr = "YUV 4:2:0 (16x16 Macroblocks)"; break;
1248 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break;
1249 case V4L2_PIX_FMT_NV12: descr = "Y/CbCr 4:2:0"; break;
1250 case V4L2_PIX_FMT_NV21: descr = "Y/CrCb 4:2:0"; break;
1251 case V4L2_PIX_FMT_NV16: descr = "Y/CbCr 4:2:2"; break;
1252 case V4L2_PIX_FMT_NV61: descr = "Y/CrCb 4:2:2"; break;
1253 case V4L2_PIX_FMT_NV24: descr = "Y/CbCr 4:4:4"; break;
1254 case V4L2_PIX_FMT_NV42: descr = "Y/CrCb 4:4:4"; break;
1255 case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break;
1256 case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break;
1257 case V4L2_PIX_FMT_NV16M: descr = "Y/CbCr 4:2:2 (N-C)"; break;
1258 case V4L2_PIX_FMT_NV61M: descr = "Y/CrCb 4:2:2 (N-C)"; break;
1259 case V4L2_PIX_FMT_NV12MT: descr = "Y/CbCr 4:2:0 (64x32 MB, N-C)"; break;
1260 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/CbCr 4:2:0 (16x16 MB, N-C)"; break;
1261 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break;
1262 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break;
1263 case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break;
1264 case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break;
1265 case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break;
1266 case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break;
1267 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break;
1268 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break;
1269 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break;
1270 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break;
1271 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break;
1272 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break;
1273 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break;
1274 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break;
1275 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break;
1276 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break;
1277 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break;
1278 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break;
1279 case V4L2_PIX_FMT_IPU3_SBGGR10: descr = "10-bit bayer BGGR IPU3 Packed"; break;
1280 case V4L2_PIX_FMT_IPU3_SGBRG10: descr = "10-bit bayer GBRG IPU3 Packed"; break;
1281 case V4L2_PIX_FMT_IPU3_SGRBG10: descr = "10-bit bayer GRBG IPU3 Packed"; break;
1282 case V4L2_PIX_FMT_IPU3_SRGGB10: descr = "10-bit bayer RGGB IPU3 Packed"; break;
1283 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break;
1284 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break;
1285 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break;
1286 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break;
1287 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break;
1288 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break;
1289 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break;
1290 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break;
1291 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break;
1292 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break;
1293 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break;
1294 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break;
1295 case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break;
1296 case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break;
1297 case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break;
1298 case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break;
1299 case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break;
1300 case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break;
1301 case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break;
1302 case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break;
1303 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break;
1304 case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break;
1305 case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break;
1306 case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break;
1307 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break;
1308 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break;
1309 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break;
1310 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break;
1311 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break;
1312 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break;
1313 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break;
1314 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break;
1315 case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break;
1316 case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break;
1317 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break;
1318 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break;
1319 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break;
1320 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break;
1321 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break;
1322 case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break;
1323 case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break;
1324 case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break;
1325 case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit Signed Deltas"; break;
1326 case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit Signed Deltas"; break;
1327 case V4L2_TCH_FMT_TU16: descr = "16-bit Unsigned Touch Data"; break;
1328 case V4L2_TCH_FMT_TU08: descr = "8-bit Unsigned Touch Data"; break;
1329 case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break;
1330 case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break;
1331 case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break;
1332 case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break;
1333
1334 default:
1335 /* Compressed formats */
1336 flags = V4L2_FMT_FLAG_COMPRESSED;
1337 switch (fmt->pixelformat) {
1338 /* Max description length mask: descr = "0123456789012345678901234567890" */
1339 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break;
1340 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break;
1341 case V4L2_PIX_FMT_DV: descr = "1394"; break;
1342 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break;
1343 case V4L2_PIX_FMT_H264: descr = "H.264"; break;
1344 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break;
1345 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break;
1346 case V4L2_PIX_FMT_H264_SLICE: descr = "H.264 Parsed Slice Data"; break;
1347 case V4L2_PIX_FMT_H263: descr = "H.263"; break;
1348 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break;
1349 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break;
1350 case V4L2_PIX_FMT_MPEG2_SLICE: descr = "MPEG-2 Parsed Slice Data"; break;
1351 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 Part 2 ES"; break;
1352 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break;
1353 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break;
1354 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break;
1355 case V4L2_PIX_FMT_VP8: descr = "VP8"; break;
1356 case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break;
1357 case V4L2_PIX_FMT_VP9: descr = "VP9"; break;
1358 case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */
1359 case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */
1360 case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */
1361 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break;
1362 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break;
1363 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break;
1364 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break;
1365 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break;
1366 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break;
1367 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break;
1368 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break;
1369 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break;
1370 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break;
1371 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break;
1372 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break;
1373 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break;
1374 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break;
1375 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break;
1376 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break;
1377 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break;
1378 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break;
1379 case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break;
1380 case V4L2_PIX_FMT_SUNXI_TILED_NV12: descr = "Sunxi Tiled NV12 Format"; break;
1381 default:
1382 if (fmt->description[0])
1383 return;
1384 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat);
1385 flags = 0;
1386 snprintf(fmt->description, sz, "%c%c%c%c%s",
1387 (char)(fmt->pixelformat & 0x7f),
1388 (char)((fmt->pixelformat >> 8) & 0x7f),
1389 (char)((fmt->pixelformat >> 16) & 0x7f),
1390 (char)((fmt->pixelformat >> 24) & 0x7f),
1391 (fmt->pixelformat & (1UL << 31)) ? "-BE" : "");
1392 break;
1393 }
1394 }
1395
1396 if (descr)
1397 WARN_ON(strscpy(fmt->description, descr, sz) < 0);
1398 fmt->flags |= flags;
1399}
1400
1401static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
1402 struct file *file, void *fh, void *arg)
1403{
1404 struct video_device *vdev = video_devdata(file);
1405 struct v4l2_fmtdesc *p = arg;
1406 int ret = check_fmt(file, p->type);
1407 u32 cap_mask;
1408
1409 if (ret)
1410 return ret;
1411 ret = -EINVAL;
1412
1413 switch (p->type) {
1414 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1415 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1416 cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE |
1417 V4L2_CAP_VIDEO_M2M_MPLANE;
1418 if (!!(vdev->device_caps & cap_mask) !=
1419 (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE))
1420 break;
1421
1422 if (unlikely(!ops->vidioc_enum_fmt_vid_cap))
1423 break;
1424 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
1425 break;
1426 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1427 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay))
1428 break;
1429 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
1430 break;
1431 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1432 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1433 cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE |
1434 V4L2_CAP_VIDEO_M2M_MPLANE;
1435 if (!!(vdev->device_caps & cap_mask) !=
1436 (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE))
1437 break;
1438
1439 if (unlikely(!ops->vidioc_enum_fmt_vid_out))
1440 break;
1441 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg);
1442 break;
1443 case V4L2_BUF_TYPE_SDR_CAPTURE:
1444 if (unlikely(!ops->vidioc_enum_fmt_sdr_cap))
1445 break;
1446 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg);
1447 break;
1448 case V4L2_BUF_TYPE_SDR_OUTPUT:
1449 if (unlikely(!ops->vidioc_enum_fmt_sdr_out))
1450 break;
1451 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg);
1452 break;
1453 case V4L2_BUF_TYPE_META_CAPTURE:
1454 if (unlikely(!ops->vidioc_enum_fmt_meta_cap))
1455 break;
1456 ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg);
1457 break;
1458 case V4L2_BUF_TYPE_META_OUTPUT:
1459 if (unlikely(!ops->vidioc_enum_fmt_meta_out))
1460 break;
1461 ret = ops->vidioc_enum_fmt_meta_out(file, fh, arg);
1462 break;
1463 }
1464 if (ret == 0)
1465 v4l_fill_fmtdesc(p);
1466 return ret;
1467}
1468
1469static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
1470 struct file *file, void *fh, void *arg)
1471{
1472 struct v4l2_format *p = arg;
1473 int ret = check_fmt(file, p->type);
1474
1475 if (ret)
1476 return ret;
1477
1478 /*
1479 * fmt can't be cleared for these overlay types due to the 'clips'
1480 * 'clipcount' and 'bitmap' pointers in struct v4l2_window.
1481 * Those are provided by the user. So handle these two overlay types
1482 * first, and then just do a simple memset for the other types.
1483 */
1484 switch (p->type) {
1485 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1486 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: {
1487 struct v4l2_clip __user *clips = p->fmt.win.clips;
1488 u32 clipcount = p->fmt.win.clipcount;
1489 void __user *bitmap = p->fmt.win.bitmap;
1490
1491 memset(&p->fmt, 0, sizeof(p->fmt));
1492 p->fmt.win.clips = clips;
1493 p->fmt.win.clipcount = clipcount;
1494 p->fmt.win.bitmap = bitmap;
1495 break;
1496 }
1497 default:
1498 memset(&p->fmt, 0, sizeof(p->fmt));
1499 break;
1500 }
1501
1502 switch (p->type) {
1503 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1504 if (unlikely(!ops->vidioc_g_fmt_vid_cap))
1505 break;
1506 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1507 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg);
1508 /* just in case the driver zeroed it again */
1509 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1510 return ret;
1511 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1512 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
1513 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1514 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
1515 case V4L2_BUF_TYPE_VBI_CAPTURE:
1516 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
1517 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1518 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
1519 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1520 if (unlikely(!ops->vidioc_g_fmt_vid_out))
1521 break;
1522 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1523 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg);
1524 /* just in case the driver zeroed it again */
1525 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1526 return ret;
1527 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1528 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
1529 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1530 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
1531 case V4L2_BUF_TYPE_VBI_OUTPUT:
1532 return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
1533 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1534 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
1535 case V4L2_BUF_TYPE_SDR_CAPTURE:
1536 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg);
1537 case V4L2_BUF_TYPE_SDR_OUTPUT:
1538 return ops->vidioc_g_fmt_sdr_out(file, fh, arg);
1539 case V4L2_BUF_TYPE_META_CAPTURE:
1540 return ops->vidioc_g_fmt_meta_cap(file, fh, arg);
1541 case V4L2_BUF_TYPE_META_OUTPUT:
1542 return ops->vidioc_g_fmt_meta_out(file, fh, arg);
1543 }
1544 return -EINVAL;
1545}
1546
1547static void v4l_pix_format_touch(struct v4l2_pix_format *p)
1548{
1549 /*
1550 * The v4l2_pix_format structure contains fields that make no sense for
1551 * touch. Set them to default values in this case.
1552 */
1553
1554 p->field = V4L2_FIELD_NONE;
1555 p->colorspace = V4L2_COLORSPACE_RAW;
1556 p->flags = 0;
1557 p->ycbcr_enc = 0;
1558 p->quantization = 0;
1559 p->xfer_func = 0;
1560}
1561
1562static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
1563 struct file *file, void *fh, void *arg)
1564{
1565 struct v4l2_format *p = arg;
1566 struct video_device *vfd = video_devdata(file);
1567 int ret = check_fmt(file, p->type);
1568 unsigned int i;
1569
1570 if (ret)
1571 return ret;
1572
1573 ret = v4l_enable_media_source(vfd);
1574 if (ret)
1575 return ret;
1576 v4l_sanitize_format(p);
1577
1578 switch (p->type) {
1579 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1580 if (unlikely(!ops->vidioc_s_fmt_vid_cap))
1581 break;
1582 CLEAR_AFTER_FIELD(p, fmt.pix);
1583 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg);
1584 /* just in case the driver zeroed it again */
1585 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1586 if (vfd->vfl_type == VFL_TYPE_TOUCH)
1587 v4l_pix_format_touch(&p->fmt.pix);
1588 return ret;
1589 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1590 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane))
1591 break;
1592 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
1593 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1594 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i],
1595 bytesperline);
1596 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
1597 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1598 if (unlikely(!ops->vidioc_s_fmt_vid_overlay))
1599 break;
1600 CLEAR_AFTER_FIELD(p, fmt.win);
1601 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
1602 case V4L2_BUF_TYPE_VBI_CAPTURE:
1603 if (unlikely(!ops->vidioc_s_fmt_vbi_cap))
1604 break;
1605 CLEAR_AFTER_FIELD(p, fmt.vbi);
1606 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
1607 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1608 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap))
1609 break;
1610 CLEAR_AFTER_FIELD(p, fmt.sliced);
1611 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
1612 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1613 if (unlikely(!ops->vidioc_s_fmt_vid_out))
1614 break;
1615 CLEAR_AFTER_FIELD(p, fmt.pix);
1616 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg);
1617 /* just in case the driver zeroed it again */
1618 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1619 return ret;
1620 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1621 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane))
1622 break;
1623 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
1624 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1625 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i],
1626 bytesperline);
1627 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
1628 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1629 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay))
1630 break;
1631 CLEAR_AFTER_FIELD(p, fmt.win);
1632 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
1633 case V4L2_BUF_TYPE_VBI_OUTPUT:
1634 if (unlikely(!ops->vidioc_s_fmt_vbi_out))
1635 break;
1636 CLEAR_AFTER_FIELD(p, fmt.vbi);
1637 return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
1638 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1639 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out))
1640 break;
1641 CLEAR_AFTER_FIELD(p, fmt.sliced);
1642 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
1643 case V4L2_BUF_TYPE_SDR_CAPTURE:
1644 if (unlikely(!ops->vidioc_s_fmt_sdr_cap))
1645 break;
1646 CLEAR_AFTER_FIELD(p, fmt.sdr);
1647 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg);
1648 case V4L2_BUF_TYPE_SDR_OUTPUT:
1649 if (unlikely(!ops->vidioc_s_fmt_sdr_out))
1650 break;
1651 CLEAR_AFTER_FIELD(p, fmt.sdr);
1652 return ops->vidioc_s_fmt_sdr_out(file, fh, arg);
1653 case V4L2_BUF_TYPE_META_CAPTURE:
1654 if (unlikely(!ops->vidioc_s_fmt_meta_cap))
1655 break;
1656 CLEAR_AFTER_FIELD(p, fmt.meta);
1657 return ops->vidioc_s_fmt_meta_cap(file, fh, arg);
1658 case V4L2_BUF_TYPE_META_OUTPUT:
1659 if (unlikely(!ops->vidioc_s_fmt_meta_out))
1660 break;
1661 CLEAR_AFTER_FIELD(p, fmt.meta);
1662 return ops->vidioc_s_fmt_meta_out(file, fh, arg);
1663 }
1664 return -EINVAL;
1665}
1666
1667static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
1668 struct file *file, void *fh, void *arg)
1669{
1670 struct v4l2_format *p = arg;
1671 struct video_device *vfd = video_devdata(file);
1672 int ret = check_fmt(file, p->type);
1673 unsigned int i;
1674
1675 if (ret)
1676 return ret;
1677
1678 v4l_sanitize_format(p);
1679
1680 switch (p->type) {
1681 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1682 if (unlikely(!ops->vidioc_try_fmt_vid_cap))
1683 break;
1684 CLEAR_AFTER_FIELD(p, fmt.pix);
1685 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg);
1686 /* just in case the driver zeroed it again */
1687 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1688 if (vfd->vfl_type == VFL_TYPE_TOUCH)
1689 v4l_pix_format_touch(&p->fmt.pix);
1690 return ret;
1691 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1692 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane))
1693 break;
1694 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
1695 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1696 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i],
1697 bytesperline);
1698 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
1699 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1700 if (unlikely(!ops->vidioc_try_fmt_vid_overlay))
1701 break;
1702 CLEAR_AFTER_FIELD(p, fmt.win);
1703 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
1704 case V4L2_BUF_TYPE_VBI_CAPTURE:
1705 if (unlikely(!ops->vidioc_try_fmt_vbi_cap))
1706 break;
1707 CLEAR_AFTER_FIELD(p, fmt.vbi);
1708 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
1709 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1710 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap))
1711 break;
1712 CLEAR_AFTER_FIELD(p, fmt.sliced);
1713 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
1714 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1715 if (unlikely(!ops->vidioc_try_fmt_vid_out))
1716 break;
1717 CLEAR_AFTER_FIELD(p, fmt.pix);
1718 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg);
1719 /* just in case the driver zeroed it again */
1720 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1721 return ret;
1722 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1723 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane))
1724 break;
1725 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
1726 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1727 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i],
1728 bytesperline);
1729 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
1730 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1731 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay))
1732 break;
1733 CLEAR_AFTER_FIELD(p, fmt.win);
1734 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
1735 case V4L2_BUF_TYPE_VBI_OUTPUT:
1736 if (unlikely(!ops->vidioc_try_fmt_vbi_out))
1737 break;
1738 CLEAR_AFTER_FIELD(p, fmt.vbi);
1739 return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
1740 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1741 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out))
1742 break;
1743 CLEAR_AFTER_FIELD(p, fmt.sliced);
1744 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
1745 case V4L2_BUF_TYPE_SDR_CAPTURE:
1746 if (unlikely(!ops->vidioc_try_fmt_sdr_cap))
1747 break;
1748 CLEAR_AFTER_FIELD(p, fmt.sdr);
1749 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg);
1750 case V4L2_BUF_TYPE_SDR_OUTPUT:
1751 if (unlikely(!ops->vidioc_try_fmt_sdr_out))
1752 break;
1753 CLEAR_AFTER_FIELD(p, fmt.sdr);
1754 return ops->vidioc_try_fmt_sdr_out(file, fh, arg);
1755 case V4L2_BUF_TYPE_META_CAPTURE:
1756 if (unlikely(!ops->vidioc_try_fmt_meta_cap))
1757 break;
1758 CLEAR_AFTER_FIELD(p, fmt.meta);
1759 return ops->vidioc_try_fmt_meta_cap(file, fh, arg);
1760 case V4L2_BUF_TYPE_META_OUTPUT:
1761 if (unlikely(!ops->vidioc_try_fmt_meta_out))
1762 break;
1763 CLEAR_AFTER_FIELD(p, fmt.meta);
1764 return ops->vidioc_try_fmt_meta_out(file, fh, arg);
1765 }
1766 return -EINVAL;
1767}
1768
1769static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
1770 struct file *file, void *fh, void *arg)
1771{
1772 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
1773}
1774
1775static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
1776 struct file *file, void *fh, void *arg)
1777{
1778 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
1779}
1780
1781static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,
1782 struct file *file, void *fh, void *arg)
1783{
1784 struct video_device *vfd = video_devdata(file);
1785 struct v4l2_tuner *p = arg;
1786 int err;
1787
1788 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1789 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1790 err = ops->vidioc_g_tuner(file, fh, p);
1791 if (!err)
1792 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1793 return err;
1794}
1795
1796static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
1797 struct file *file, void *fh, void *arg)
1798{
1799 struct video_device *vfd = video_devdata(file);
1800 struct v4l2_tuner *p = arg;
1801 int ret;
1802
1803 ret = v4l_enable_media_source(vfd);
1804 if (ret)
1805 return ret;
1806 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1807 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1808 return ops->vidioc_s_tuner(file, fh, p);
1809}
1810
1811static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,
1812 struct file *file, void *fh, void *arg)
1813{
1814 struct video_device *vfd = video_devdata(file);
1815 struct v4l2_modulator *p = arg;
1816 int err;
1817
1818 if (vfd->vfl_type == VFL_TYPE_RADIO)
1819 p->type = V4L2_TUNER_RADIO;
1820
1821 err = ops->vidioc_g_modulator(file, fh, p);
1822 if (!err)
1823 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1824 return err;
1825}
1826
1827static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops,
1828 struct file *file, void *fh, void *arg)
1829{
1830 struct video_device *vfd = video_devdata(file);
1831 struct v4l2_modulator *p = arg;
1832
1833 if (vfd->vfl_type == VFL_TYPE_RADIO)
1834 p->type = V4L2_TUNER_RADIO;
1835
1836 return ops->vidioc_s_modulator(file, fh, p);
1837}
1838
1839static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
1840 struct file *file, void *fh, void *arg)
1841{
1842 struct video_device *vfd = video_devdata(file);
1843 struct v4l2_frequency *p = arg;
1844
1845 if (vfd->vfl_type == VFL_TYPE_SDR)
1846 p->type = V4L2_TUNER_SDR;
1847 else
1848 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1849 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1850 return ops->vidioc_g_frequency(file, fh, p);
1851}
1852
1853static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
1854 struct file *file, void *fh, void *arg)
1855{
1856 struct video_device *vfd = video_devdata(file);
1857 const struct v4l2_frequency *p = arg;
1858 enum v4l2_tuner_type type;
1859 int ret;
1860
1861 ret = v4l_enable_media_source(vfd);
1862 if (ret)
1863 return ret;
1864 if (vfd->vfl_type == VFL_TYPE_SDR) {
1865 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)
1866 return -EINVAL;
1867 } else {
1868 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1869 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1870 if (type != p->type)
1871 return -EINVAL;
1872 }
1873 return ops->vidioc_s_frequency(file, fh, p);
1874}
1875
1876static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
1877 struct file *file, void *fh, void *arg)
1878{
1879 struct video_device *vfd = video_devdata(file);
1880 struct v4l2_standard *p = arg;
1881
1882 return v4l_video_std_enumstd(p, vfd->tvnorms);
1883}
1884
1885static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
1886 struct file *file, void *fh, void *arg)
1887{
1888 struct video_device *vfd = video_devdata(file);
1889 v4l2_std_id id = *(v4l2_std_id *)arg, norm;
1890 int ret;
1891
1892 ret = v4l_enable_media_source(vfd);
1893 if (ret)
1894 return ret;
1895 norm = id & vfd->tvnorms;
1896 if (vfd->tvnorms && !norm) /* Check if std is supported */
1897 return -EINVAL;
1898
1899 /* Calls the specific handler */
1900 return ops->vidioc_s_std(file, fh, norm);
1901}
1902
1903static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
1904 struct file *file, void *fh, void *arg)
1905{
1906 struct video_device *vfd = video_devdata(file);
1907 v4l2_std_id *p = arg;
1908 int ret;
1909
1910 ret = v4l_enable_media_source(vfd);
1911 if (ret)
1912 return ret;
1913 /*
1914 * If no signal is detected, then the driver should return
1915 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with
1916 * any standards that do not apply removed.
1917 *
1918 * This means that tuners, audio and video decoders can join
1919 * their efforts to improve the standards detection.
1920 */
1921 *p = vfd->tvnorms;
1922 return ops->vidioc_querystd(file, fh, arg);
1923}
1924
1925static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
1926 struct file *file, void *fh, void *arg)
1927{
1928 struct video_device *vfd = video_devdata(file);
1929 struct v4l2_hw_freq_seek *p = arg;
1930 enum v4l2_tuner_type type;
1931 int ret;
1932
1933 ret = v4l_enable_media_source(vfd);
1934 if (ret)
1935 return ret;
1936 /* s_hw_freq_seek is not supported for SDR for now */
1937 if (vfd->vfl_type == VFL_TYPE_SDR)
1938 return -EINVAL;
1939
1940 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1941 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1942 if (p->type != type)
1943 return -EINVAL;
1944 return ops->vidioc_s_hw_freq_seek(file, fh, p);
1945}
1946
1947static int v4l_overlay(const struct v4l2_ioctl_ops *ops,
1948 struct file *file, void *fh, void *arg)
1949{
1950 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg);
1951}
1952
1953static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,
1954 struct file *file, void *fh, void *arg)
1955{
1956 struct v4l2_requestbuffers *p = arg;
1957 int ret = check_fmt(file, p->type);
1958
1959 if (ret)
1960 return ret;
1961
1962 CLEAR_AFTER_FIELD(p, capabilities);
1963
1964 return ops->vidioc_reqbufs(file, fh, p);
1965}
1966
1967static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,
1968 struct file *file, void *fh, void *arg)
1969{
1970 struct v4l2_buffer *p = arg;
1971 int ret = check_fmt(file, p->type);
1972
1973 return ret ? ret : ops->vidioc_querybuf(file, fh, p);
1974}
1975
1976static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,
1977 struct file *file, void *fh, void *arg)
1978{
1979 struct v4l2_buffer *p = arg;
1980 int ret = check_fmt(file, p->type);
1981
1982 return ret ? ret : ops->vidioc_qbuf(file, fh, p);
1983}
1984
1985static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,
1986 struct file *file, void *fh, void *arg)
1987{
1988 struct v4l2_buffer *p = arg;
1989 int ret = check_fmt(file, p->type);
1990
1991 return ret ? ret : ops->vidioc_dqbuf(file, fh, p);
1992}
1993
1994static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
1995 struct file *file, void *fh, void *arg)
1996{
1997 struct v4l2_create_buffers *create = arg;
1998 int ret = check_fmt(file, create->format.type);
1999
2000 if (ret)
2001 return ret;
2002
2003 CLEAR_AFTER_FIELD(create, capabilities);
2004
2005 v4l_sanitize_format(&create->format);
2006
2007 ret = ops->vidioc_create_bufs(file, fh, create);
2008
2009 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
2010 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
2011 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
2012
2013 return ret;
2014}
2015
2016static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
2017 struct file *file, void *fh, void *arg)
2018{
2019 struct v4l2_buffer *b = arg;
2020 int ret = check_fmt(file, b->type);
2021
2022 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
2023}
2024
2025static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
2026 struct file *file, void *fh, void *arg)
2027{
2028 struct v4l2_streamparm *p = arg;
2029 v4l2_std_id std;
2030 int ret = check_fmt(file, p->type);
2031
2032 if (ret)
2033 return ret;
2034 if (ops->vidioc_g_parm)
2035 return ops->vidioc_g_parm(file, fh, p);
2036 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
2037 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2038 return -EINVAL;
2039 p->parm.capture.readbuffers = 2;
2040 ret = ops->vidioc_g_std(file, fh, &std);
2041 if (ret == 0)
2042 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe);
2043 return ret;
2044}
2045
2046static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
2047 struct file *file, void *fh, void *arg)
2048{
2049 struct v4l2_streamparm *p = arg;
2050 int ret = check_fmt(file, p->type);
2051
2052 if (ret)
2053 return ret;
2054
2055 /* Note: extendedmode is never used in drivers */
2056 if (V4L2_TYPE_IS_OUTPUT(p->type)) {
2057 memset(p->parm.output.reserved, 0,
2058 sizeof(p->parm.output.reserved));
2059 p->parm.output.extendedmode = 0;
2060 p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY;
2061 } else {
2062 memset(p->parm.capture.reserved, 0,
2063 sizeof(p->parm.capture.reserved));
2064 p->parm.capture.extendedmode = 0;
2065 p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY;
2066 }
2067 return ops->vidioc_s_parm(file, fh, p);
2068}
2069
2070static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,
2071 struct file *file, void *fh, void *arg)
2072{
2073 struct video_device *vfd = video_devdata(file);
2074 struct v4l2_queryctrl *p = arg;
2075 struct v4l2_fh *vfh =
2076 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2077
2078 if (vfh && vfh->ctrl_handler)
2079 return v4l2_queryctrl(vfh->ctrl_handler, p);
2080 if (vfd->ctrl_handler)
2081 return v4l2_queryctrl(vfd->ctrl_handler, p);
2082 if (ops->vidioc_queryctrl)
2083 return ops->vidioc_queryctrl(file, fh, p);
2084 return -ENOTTY;
2085}
2086
2087static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops,
2088 struct file *file, void *fh, void *arg)
2089{
2090 struct video_device *vfd = video_devdata(file);
2091 struct v4l2_query_ext_ctrl *p = arg;
2092 struct v4l2_fh *vfh =
2093 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2094
2095 if (vfh && vfh->ctrl_handler)
2096 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p);
2097 if (vfd->ctrl_handler)
2098 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p);
2099 if (ops->vidioc_query_ext_ctrl)
2100 return ops->vidioc_query_ext_ctrl(file, fh, p);
2101 return -ENOTTY;
2102}
2103
2104static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,
2105 struct file *file, void *fh, void *arg)
2106{
2107 struct video_device *vfd = video_devdata(file);
2108 struct v4l2_querymenu *p = arg;
2109 struct v4l2_fh *vfh =
2110 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2111
2112 if (vfh && vfh->ctrl_handler)
2113 return v4l2_querymenu(vfh->ctrl_handler, p);
2114 if (vfd->ctrl_handler)
2115 return v4l2_querymenu(vfd->ctrl_handler, p);
2116 if (ops->vidioc_querymenu)
2117 return ops->vidioc_querymenu(file, fh, p);
2118 return -ENOTTY;
2119}
2120
2121static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops,
2122 struct file *file, void *fh, void *arg)
2123{
2124 struct video_device *vfd = video_devdata(file);
2125 struct v4l2_control *p = arg;
2126 struct v4l2_fh *vfh =
2127 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2128 struct v4l2_ext_controls ctrls;
2129 struct v4l2_ext_control ctrl;
2130
2131 if (vfh && vfh->ctrl_handler)
2132 return v4l2_g_ctrl(vfh->ctrl_handler, p);
2133 if (vfd->ctrl_handler)
2134 return v4l2_g_ctrl(vfd->ctrl_handler, p);
2135 if (ops->vidioc_g_ctrl)
2136 return ops->vidioc_g_ctrl(file, fh, p);
2137 if (ops->vidioc_g_ext_ctrls == NULL)
2138 return -ENOTTY;
2139
2140 ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
2141 ctrls.count = 1;
2142 ctrls.controls = &ctrl;
2143 ctrl.id = p->id;
2144 ctrl.value = p->value;
2145 if (check_ext_ctrls(&ctrls, 1)) {
2146 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
2147
2148 if (ret == 0)
2149 p->value = ctrl.value;
2150 return ret;
2151 }
2152 return -EINVAL;
2153}
2154
2155static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,
2156 struct file *file, void *fh, void *arg)
2157{
2158 struct video_device *vfd = video_devdata(file);
2159 struct v4l2_control *p = arg;
2160 struct v4l2_fh *vfh =
2161 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2162 struct v4l2_ext_controls ctrls;
2163 struct v4l2_ext_control ctrl;
2164
2165 if (vfh && vfh->ctrl_handler)
2166 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
2167 if (vfd->ctrl_handler)
2168 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
2169 if (ops->vidioc_s_ctrl)
2170 return ops->vidioc_s_ctrl(file, fh, p);
2171 if (ops->vidioc_s_ext_ctrls == NULL)
2172 return -ENOTTY;
2173
2174 ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
2175 ctrls.count = 1;
2176 ctrls.controls = &ctrl;
2177 ctrl.id = p->id;
2178 ctrl.value = p->value;
2179 if (check_ext_ctrls(&ctrls, 1))
2180 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
2181 return -EINVAL;
2182}
2183
2184static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2185 struct file *file, void *fh, void *arg)
2186{
2187 struct video_device *vfd = video_devdata(file);
2188 struct v4l2_ext_controls *p = arg;
2189 struct v4l2_fh *vfh =
2190 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2191
2192 p->error_idx = p->count;
2193 if (vfh && vfh->ctrl_handler)
2194 return v4l2_g_ext_ctrls(vfh->ctrl_handler,
2195 vfd, vfd->v4l2_dev->mdev, p);
2196 if (vfd->ctrl_handler)
2197 return v4l2_g_ext_ctrls(vfd->ctrl_handler,
2198 vfd, vfd->v4l2_dev->mdev, p);
2199 if (ops->vidioc_g_ext_ctrls == NULL)
2200 return -ENOTTY;
2201 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :
2202 -EINVAL;
2203}
2204
2205static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2206 struct file *file, void *fh, void *arg)
2207{
2208 struct video_device *vfd = video_devdata(file);
2209 struct v4l2_ext_controls *p = arg;
2210 struct v4l2_fh *vfh =
2211 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2212
2213 p->error_idx = p->count;
2214 if (vfh && vfh->ctrl_handler)
2215 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler,
2216 vfd, vfd->v4l2_dev->mdev, p);
2217 if (vfd->ctrl_handler)
2218 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler,
2219 vfd, vfd->v4l2_dev->mdev, p);
2220 if (ops->vidioc_s_ext_ctrls == NULL)
2221 return -ENOTTY;
2222 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :
2223 -EINVAL;
2224}
2225
2226static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2227 struct file *file, void *fh, void *arg)
2228{
2229 struct video_device *vfd = video_devdata(file);
2230 struct v4l2_ext_controls *p = arg;
2231 struct v4l2_fh *vfh =
2232 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2233
2234 p->error_idx = p->count;
2235 if (vfh && vfh->ctrl_handler)
2236 return v4l2_try_ext_ctrls(vfh->ctrl_handler,
2237 vfd, vfd->v4l2_dev->mdev, p);
2238 if (vfd->ctrl_handler)
2239 return v4l2_try_ext_ctrls(vfd->ctrl_handler,
2240 vfd, vfd->v4l2_dev->mdev, p);
2241 if (ops->vidioc_try_ext_ctrls == NULL)
2242 return -ENOTTY;
2243 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :
2244 -EINVAL;
2245}
2246
2247/*
2248 * The selection API specified originally that the _MPLANE buffer types
2249 * shouldn't be used. The reasons for this are lost in the mists of time
2250 * (or just really crappy memories). Regardless, this is really annoying
2251 * for userspace. So to keep things simple we map _MPLANE buffer types
2252 * to their 'regular' counterparts before calling the driver. And we
2253 * restore it afterwards. This way applications can use either buffer
2254 * type and drivers don't need to check for both.
2255 */
2256static int v4l_g_selection(const struct v4l2_ioctl_ops *ops,
2257 struct file *file, void *fh, void *arg)
2258{
2259 struct v4l2_selection *p = arg;
2260 u32 old_type = p->type;
2261 int ret;
2262
2263 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2264 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2265 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2266 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2267 ret = ops->vidioc_g_selection(file, fh, p);
2268 p->type = old_type;
2269 return ret;
2270}
2271
2272static int v4l_s_selection(const struct v4l2_ioctl_ops *ops,
2273 struct file *file, void *fh, void *arg)
2274{
2275 struct v4l2_selection *p = arg;
2276 u32 old_type = p->type;
2277 int ret;
2278
2279 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2280 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2281 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2282 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2283 ret = ops->vidioc_s_selection(file, fh, p);
2284 p->type = old_type;
2285 return ret;
2286}
2287
2288static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
2289 struct file *file, void *fh, void *arg)
2290{
2291 struct video_device *vfd = video_devdata(file);
2292 struct v4l2_crop *p = arg;
2293 struct v4l2_selection s = {
2294 .type = p->type,
2295 };
2296 int ret;
2297
2298 /* simulate capture crop using selection api */
2299
2300 /* crop means compose for output devices */
2301 if (V4L2_TYPE_IS_OUTPUT(p->type))
2302 s.target = V4L2_SEL_TGT_COMPOSE;
2303 else
2304 s.target = V4L2_SEL_TGT_CROP;
2305
2306 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))
2307 s.target = s.target == V4L2_SEL_TGT_COMPOSE ?
2308 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE;
2309
2310 ret = v4l_g_selection(ops, file, fh, &s);
2311
2312 /* copying results to old structure on success */
2313 if (!ret)
2314 p->c = s.r;
2315 return ret;
2316}
2317
2318static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
2319 struct file *file, void *fh, void *arg)
2320{
2321 struct video_device *vfd = video_devdata(file);
2322 struct v4l2_crop *p = arg;
2323 struct v4l2_selection s = {
2324 .type = p->type,
2325 .r = p->c,
2326 };
2327
2328 /* simulate capture crop using selection api */
2329
2330 /* crop means compose for output devices */
2331 if (V4L2_TYPE_IS_OUTPUT(p->type))
2332 s.target = V4L2_SEL_TGT_COMPOSE;
2333 else
2334 s.target = V4L2_SEL_TGT_CROP;
2335
2336 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))
2337 s.target = s.target == V4L2_SEL_TGT_COMPOSE ?
2338 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE;
2339
2340 return v4l_s_selection(ops, file, fh, &s);
2341}
2342
2343static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
2344 struct file *file, void *fh, void *arg)
2345{
2346 struct video_device *vfd = video_devdata(file);
2347 struct v4l2_cropcap *p = arg;
2348 struct v4l2_selection s = { .type = p->type };
2349 int ret = 0;
2350
2351 /* setting trivial pixelaspect */
2352 p->pixelaspect.numerator = 1;
2353 p->pixelaspect.denominator = 1;
2354
2355 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2356 s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2357 else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2358 s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2359
2360 /*
2361 * The determine_valid_ioctls() call already should ensure
2362 * that this can never happen, but just in case...
2363 */
2364 if (WARN_ON(!ops->vidioc_g_selection))
2365 return -ENOTTY;
2366
2367 if (ops->vidioc_g_pixelaspect)
2368 ret = ops->vidioc_g_pixelaspect(file, fh, s.type,
2369 &p->pixelaspect);
2370
2371 /*
2372 * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the
2373 * square pixel aspect ratio in that case.
2374 */
2375 if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD)
2376 return ret;
2377
2378 /* Use g_selection() to fill in the bounds and defrect rectangles */
2379
2380 /* obtaining bounds */
2381 if (V4L2_TYPE_IS_OUTPUT(p->type))
2382 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
2383 else
2384 s.target = V4L2_SEL_TGT_CROP_BOUNDS;
2385
2386 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))
2387 s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ?
2388 V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS;
2389
2390 ret = v4l_g_selection(ops, file, fh, &s);
2391 if (ret)
2392 return ret;
2393 p->bounds = s.r;
2394
2395 /* obtaining defrect */
2396 if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS)
2397 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
2398 else
2399 s.target = V4L2_SEL_TGT_CROP_DEFAULT;
2400
2401 ret = v4l_g_selection(ops, file, fh, &s);
2402 if (ret)
2403 return ret;
2404 p->defrect = s.r;
2405
2406 return 0;
2407}
2408
2409static int v4l_log_status(const struct v4l2_ioctl_ops *ops,
2410 struct file *file, void *fh, void *arg)
2411{
2412 struct video_device *vfd = video_devdata(file);
2413 int ret;
2414
2415 if (vfd->v4l2_dev)
2416 pr_info("%s: ================= START STATUS =================\n",
2417 vfd->v4l2_dev->name);
2418 ret = ops->vidioc_log_status(file, fh);
2419 if (vfd->v4l2_dev)
2420 pr_info("%s: ================== END STATUS ==================\n",
2421 vfd->v4l2_dev->name);
2422 return ret;
2423}
2424
2425static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
2426 struct file *file, void *fh, void *arg)
2427{
2428#ifdef CONFIG_VIDEO_ADV_DEBUG
2429 struct v4l2_dbg_register *p = arg;
2430 struct video_device *vfd = video_devdata(file);
2431 struct v4l2_subdev *sd;
2432 int idx = 0;
2433
2434 if (!capable(CAP_SYS_ADMIN))
2435 return -EPERM;
2436 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2437 if (vfd->v4l2_dev == NULL)
2438 return -EINVAL;
2439 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2440 if (p->match.addr == idx++)
2441 return v4l2_subdev_call(sd, core, g_register, p);
2442 return -EINVAL;
2443 }
2444 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2445 (ops->vidioc_g_chip_info || p->match.addr == 0))
2446 return ops->vidioc_g_register(file, fh, p);
2447 return -EINVAL;
2448#else
2449 return -ENOTTY;
2450#endif
2451}
2452
2453static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
2454 struct file *file, void *fh, void *arg)
2455{
2456#ifdef CONFIG_VIDEO_ADV_DEBUG
2457 const struct v4l2_dbg_register *p = arg;
2458 struct video_device *vfd = video_devdata(file);
2459 struct v4l2_subdev *sd;
2460 int idx = 0;
2461
2462 if (!capable(CAP_SYS_ADMIN))
2463 return -EPERM;
2464 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2465 if (vfd->v4l2_dev == NULL)
2466 return -EINVAL;
2467 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2468 if (p->match.addr == idx++)
2469 return v4l2_subdev_call(sd, core, s_register, p);
2470 return -EINVAL;
2471 }
2472 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2473 (ops->vidioc_g_chip_info || p->match.addr == 0))
2474 return ops->vidioc_s_register(file, fh, p);
2475 return -EINVAL;
2476#else
2477 return -ENOTTY;
2478#endif
2479}
2480
2481static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,
2482 struct file *file, void *fh, void *arg)
2483{
2484#ifdef CONFIG_VIDEO_ADV_DEBUG
2485 struct video_device *vfd = video_devdata(file);
2486 struct v4l2_dbg_chip_info *p = arg;
2487 struct v4l2_subdev *sd;
2488 int idx = 0;
2489
2490 switch (p->match.type) {
2491 case V4L2_CHIP_MATCH_BRIDGE:
2492 if (ops->vidioc_s_register)
2493 p->flags |= V4L2_CHIP_FL_WRITABLE;
2494 if (ops->vidioc_g_register)
2495 p->flags |= V4L2_CHIP_FL_READABLE;
2496 strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));
2497 if (ops->vidioc_g_chip_info)
2498 return ops->vidioc_g_chip_info(file, fh, arg);
2499 if (p->match.addr)
2500 return -EINVAL;
2501 return 0;
2502
2503 case V4L2_CHIP_MATCH_SUBDEV:
2504 if (vfd->v4l2_dev == NULL)
2505 break;
2506 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {
2507 if (p->match.addr != idx++)
2508 continue;
2509 if (sd->ops->core && sd->ops->core->s_register)
2510 p->flags |= V4L2_CHIP_FL_WRITABLE;
2511 if (sd->ops->core && sd->ops->core->g_register)
2512 p->flags |= V4L2_CHIP_FL_READABLE;
2513 strscpy(p->name, sd->name, sizeof(p->name));
2514 return 0;
2515 }
2516 break;
2517 }
2518 return -EINVAL;
2519#else
2520 return -ENOTTY;
2521#endif
2522}
2523
2524static int v4l_dqevent(const struct v4l2_ioctl_ops *ops,
2525 struct file *file, void *fh, void *arg)
2526{
2527 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK);
2528}
2529
2530static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,
2531 struct file *file, void *fh, void *arg)
2532{
2533 return ops->vidioc_subscribe_event(fh, arg);
2534}
2535
2536static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,
2537 struct file *file, void *fh, void *arg)
2538{
2539 return ops->vidioc_unsubscribe_event(fh, arg);
2540}
2541
2542static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,
2543 struct file *file, void *fh, void *arg)
2544{
2545 struct v4l2_sliced_vbi_cap *p = arg;
2546 int ret = check_fmt(file, p->type);
2547
2548 if (ret)
2549 return ret;
2550
2551 /* Clear up to type, everything after type is zeroed already */
2552 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
2553
2554 return ops->vidioc_g_sliced_vbi_cap(file, fh, p);
2555}
2556
2557static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
2558 struct file *file, void *fh, void *arg)
2559{
2560 struct video_device *vfd = video_devdata(file);
2561 struct v4l2_frequency_band *p = arg;
2562 enum v4l2_tuner_type type;
2563 int err;
2564
2565 if (vfd->vfl_type == VFL_TYPE_SDR) {
2566 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)
2567 return -EINVAL;
2568 type = p->type;
2569 } else {
2570 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2571 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2572 if (type != p->type)
2573 return -EINVAL;
2574 }
2575 if (ops->vidioc_enum_freq_bands) {
2576 err = ops->vidioc_enum_freq_bands(file, fh, p);
2577 if (err != -ENOTTY)
2578 return err;
2579 }
2580 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) {
2581 struct v4l2_tuner t = {
2582 .index = p->tuner,
2583 .type = type,
2584 };
2585
2586 if (p->index)
2587 return -EINVAL;
2588 err = ops->vidioc_g_tuner(file, fh, &t);
2589 if (err)
2590 return err;
2591 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2592 p->rangelow = t.rangelow;
2593 p->rangehigh = t.rangehigh;
2594 p->modulation = (type == V4L2_TUNER_RADIO) ?
2595 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2596 return 0;
2597 }
2598 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) {
2599 struct v4l2_modulator m = {
2600 .index = p->tuner,
2601 };
2602
2603 if (type != V4L2_TUNER_RADIO)
2604 return -EINVAL;
2605 if (p->index)
2606 return -EINVAL;
2607 err = ops->vidioc_g_modulator(file, fh, &m);
2608 if (err)
2609 return err;
2610 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2611 p->rangelow = m.rangelow;
2612 p->rangehigh = m.rangehigh;
2613 p->modulation = (type == V4L2_TUNER_RADIO) ?
2614 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2615 return 0;
2616 }
2617 return -ENOTTY;
2618}
2619
2620struct v4l2_ioctl_info {
2621 unsigned int ioctl;
2622 u32 flags;
2623 const char * const name;
2624 int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file,
2625 void *fh, void *p);
2626 void (*debug)(const void *arg, bool write_only);
2627};
2628
2629/* This control needs a priority check */
2630#define INFO_FL_PRIO (1 << 0)
2631/* This control can be valid if the filehandle passes a control handler. */
2632#define INFO_FL_CTRL (1 << 1)
2633/* Queuing ioctl */
2634#define INFO_FL_QUEUE (1 << 2)
2635/* Always copy back result, even on error */
2636#define INFO_FL_ALWAYS_COPY (1 << 3)
2637/* Zero struct from after the field to the end */
2638#define INFO_FL_CLEAR(v4l2_struct, field) \
2639 ((offsetof(struct v4l2_struct, field) + \
2640 sizeof(((struct v4l2_struct *)0)->field)) << 16)
2641#define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
2642
2643#define DEFINE_V4L_STUB_FUNC(_vidioc) \
2644 static int v4l_stub_ ## _vidioc( \
2645 const struct v4l2_ioctl_ops *ops, \
2646 struct file *file, void *fh, void *p) \
2647 { \
2648 return ops->vidioc_ ## _vidioc(file, fh, p); \
2649 }
2650
2651#define IOCTL_INFO(_ioctl, _func, _debug, _flags) \
2652 [_IOC_NR(_ioctl)] = { \
2653 .ioctl = _ioctl, \
2654 .flags = _flags, \
2655 .name = #_ioctl, \
2656 .func = _func, \
2657 .debug = _debug, \
2658 }
2659
2660DEFINE_V4L_STUB_FUNC(g_fbuf)
2661DEFINE_V4L_STUB_FUNC(s_fbuf)
2662DEFINE_V4L_STUB_FUNC(expbuf)
2663DEFINE_V4L_STUB_FUNC(g_std)
2664DEFINE_V4L_STUB_FUNC(g_audio)
2665DEFINE_V4L_STUB_FUNC(s_audio)
2666DEFINE_V4L_STUB_FUNC(g_input)
2667DEFINE_V4L_STUB_FUNC(g_edid)
2668DEFINE_V4L_STUB_FUNC(s_edid)
2669DEFINE_V4L_STUB_FUNC(g_output)
2670DEFINE_V4L_STUB_FUNC(g_audout)
2671DEFINE_V4L_STUB_FUNC(s_audout)
2672DEFINE_V4L_STUB_FUNC(g_jpegcomp)
2673DEFINE_V4L_STUB_FUNC(s_jpegcomp)
2674DEFINE_V4L_STUB_FUNC(enumaudio)
2675DEFINE_V4L_STUB_FUNC(enumaudout)
2676DEFINE_V4L_STUB_FUNC(enum_framesizes)
2677DEFINE_V4L_STUB_FUNC(enum_frameintervals)
2678DEFINE_V4L_STUB_FUNC(g_enc_index)
2679DEFINE_V4L_STUB_FUNC(encoder_cmd)
2680DEFINE_V4L_STUB_FUNC(try_encoder_cmd)
2681DEFINE_V4L_STUB_FUNC(decoder_cmd)
2682DEFINE_V4L_STUB_FUNC(try_decoder_cmd)
2683DEFINE_V4L_STUB_FUNC(s_dv_timings)
2684DEFINE_V4L_STUB_FUNC(g_dv_timings)
2685DEFINE_V4L_STUB_FUNC(enum_dv_timings)
2686DEFINE_V4L_STUB_FUNC(query_dv_timings)
2687DEFINE_V4L_STUB_FUNC(dv_timings_cap)
2688
2689static const struct v4l2_ioctl_info v4l2_ioctls[] = {
2690 IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
2691 IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)),
2692 IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0),
2693 IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
2694 IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2695 IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
2696 IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0),
2697 IOCTL_INFO(VIDIOC_S_FBUF, v4l_stub_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
2698 IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO),
2699 IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),
2700 IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)),
2701 IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),
2702 IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2703 IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2704 IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
2705 IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
2706 IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0),
2707 IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
2708 IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
2709 IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
2710 IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
2711 IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
2712 IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
2713 IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
2714 IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0),
2715 IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO),
2716 IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
2717 IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
2718 IOCTL_INFO(VIDIOC_G_INPUT, v4l_stub_g_input, v4l_print_u32, 0),
2719 IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
2720 IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY),
2721 IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY),
2722 IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_stub_g_output, v4l_print_u32, 0),
2723 IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
2724 IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
2725 IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0),
2726 IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO),
2727 IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
2728 IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
2729 IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
2730 IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
2731 IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
2732 IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
2733 IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
2734 IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)),
2735 IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)),
2736 IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0),
2737 IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
2738 IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
2739 IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
2740 IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
2741 IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
2742 IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
2743 IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
2744 IOCTL_INFO(VIDIOC_G_SLICED_VBI_CAP, v4l_g_sliced_vbi_cap, v4l_print_sliced_vbi_cap, INFO_FL_CLEAR(v4l2_sliced_vbi_cap, type)),
2745 IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
2746 IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2747 IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL),
2748 IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2749 IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
2750 IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
2751 IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0),
2752 IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2753 IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2754 IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
2755 IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0),
2756 IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
2757 IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
2758 IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
2759 IOCTL_INFO(VIDIOC_S_DV_TIMINGS, v4l_stub_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_dv_timings, bt.flags)),
2760 IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0),
2761 IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
2762 IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
2763 IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
2764 IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2765 IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
2766 IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)),
2767 IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY),
2768 IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)),
2769 IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
2770 IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
2771 IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
2772};
2773#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
2774
2775static bool v4l2_is_known_ioctl(unsigned int cmd)
2776{
2777 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2778 return false;
2779 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
2780}
2781
2782static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev,
2783 struct v4l2_fh *vfh, unsigned int cmd,
2784 void *arg)
2785{
2786 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2787 return vdev->lock;
2788#if IS_ENABLED(CONFIG_V4L2_MEM2MEM_DEV)
2789 if (vfh && vfh->m2m_ctx &&
2790 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) {
2791 if (vfh->m2m_ctx->q_lock)
2792 return vfh->m2m_ctx->q_lock;
2793 }
2794#endif
2795 if (vdev->queue && vdev->queue->lock &&
2796 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
2797 return vdev->queue->lock;
2798 return vdev->lock;
2799}
2800
2801/* Common ioctl debug function. This function can be used by
2802 external ioctl messages as well as internal V4L ioctl */
2803void v4l_printk_ioctl(const char *prefix, unsigned int cmd)
2804{
2805 const char *dir, *type;
2806
2807 if (prefix)
2808 printk(KERN_DEBUG "%s: ", prefix);
2809
2810 switch (_IOC_TYPE(cmd)) {
2811 case 'd':
2812 type = "v4l2_int";
2813 break;
2814 case 'V':
2815 if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
2816 type = "v4l2";
2817 break;
2818 }
2819 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
2820 return;
2821 default:
2822 type = "unknown";
2823 break;
2824 }
2825
2826 switch (_IOC_DIR(cmd)) {
2827 case _IOC_NONE: dir = "--"; break;
2828 case _IOC_READ: dir = "r-"; break;
2829 case _IOC_WRITE: dir = "-w"; break;
2830 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
2831 default: dir = "*ERR*"; break;
2832 }
2833 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
2834 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
2835}
2836EXPORT_SYMBOL(v4l_printk_ioctl);
2837
2838static long __video_do_ioctl(struct file *file,
2839 unsigned int cmd, void *arg)
2840{
2841 struct video_device *vfd = video_devdata(file);
2842 struct mutex *req_queue_lock = NULL;
2843 struct mutex *lock; /* ioctl serialization mutex */
2844 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
2845 bool write_only = false;
2846 struct v4l2_ioctl_info default_info;
2847 const struct v4l2_ioctl_info *info;
2848 void *fh = file->private_data;
2849 struct v4l2_fh *vfh = NULL;
2850 int dev_debug = vfd->dev_debug;
2851 long ret = -ENOTTY;
2852
2853 if (ops == NULL) {
2854 pr_warn("%s: has no ioctl_ops.\n",
2855 video_device_node_name(vfd));
2856 return ret;
2857 }
2858
2859 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
2860 vfh = file->private_data;
2861
2862 /*
2863 * We need to serialize streamon/off with queueing new requests.
2864 * These ioctls may trigger the cancellation of a streaming
2865 * operation, and that should not be mixed with queueing a new
2866 * request at the same time.
2867 */
2868 if (v4l2_device_supports_requests(vfd->v4l2_dev) &&
2869 (cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF)) {
2870 req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex;
2871
2872 if (mutex_lock_interruptible(req_queue_lock))
2873 return -ERESTARTSYS;
2874 }
2875
2876 lock = v4l2_ioctl_get_lock(vfd, vfh, cmd, arg);
2877
2878 if (lock && mutex_lock_interruptible(lock)) {
2879 if (req_queue_lock)
2880 mutex_unlock(req_queue_lock);
2881 return -ERESTARTSYS;
2882 }
2883
2884 if (!video_is_registered(vfd)) {
2885 ret = -ENODEV;
2886 goto unlock;
2887 }
2888
2889 if (v4l2_is_known_ioctl(cmd)) {
2890 info = &v4l2_ioctls[_IOC_NR(cmd)];
2891
2892 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) &&
2893 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
2894 goto done;
2895
2896 if (vfh && (info->flags & INFO_FL_PRIO)) {
2897 ret = v4l2_prio_check(vfd->prio, vfh->prio);
2898 if (ret)
2899 goto done;
2900 }
2901 } else {
2902 default_info.ioctl = cmd;
2903 default_info.flags = 0;
2904 default_info.debug = v4l_print_default;
2905 info = &default_info;
2906 }
2907
2908 write_only = _IOC_DIR(cmd) == _IOC_WRITE;
2909 if (info != &default_info) {
2910 ret = info->func(ops, file, fh, arg);
2911 } else if (!ops->vidioc_default) {
2912 ret = -ENOTTY;
2913 } else {
2914 ret = ops->vidioc_default(file, fh,
2915 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
2916 cmd, arg);
2917 }
2918
2919done:
2920 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) {
2921 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) &&
2922 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF))
2923 goto unlock;
2924
2925 v4l_printk_ioctl(video_device_node_name(vfd), cmd);
2926 if (ret < 0)
2927 pr_cont(": error %ld", ret);
2928 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG))
2929 pr_cont("\n");
2930 else if (_IOC_DIR(cmd) == _IOC_NONE)
2931 info->debug(arg, write_only);
2932 else {
2933 pr_cont(": ");
2934 info->debug(arg, write_only);
2935 }
2936 }
2937
2938unlock:
2939 if (lock)
2940 mutex_unlock(lock);
2941 if (req_queue_lock)
2942 mutex_unlock(req_queue_lock);
2943 return ret;
2944}
2945
2946static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
2947 void __user **user_ptr, void ***kernel_ptr)
2948{
2949 int ret = 0;
2950
2951 switch (cmd) {
2952 case VIDIOC_PREPARE_BUF:
2953 case VIDIOC_QUERYBUF:
2954 case VIDIOC_QBUF:
2955 case VIDIOC_DQBUF: {
2956 struct v4l2_buffer *buf = parg;
2957
2958 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
2959 if (buf->length > VIDEO_MAX_PLANES) {
2960 ret = -EINVAL;
2961 break;
2962 }
2963 *user_ptr = (void __user *)buf->m.planes;
2964 *kernel_ptr = (void **)&buf->m.planes;
2965 *array_size = sizeof(struct v4l2_plane) * buf->length;
2966 ret = 1;
2967 }
2968 break;
2969 }
2970
2971 case VIDIOC_G_EDID:
2972 case VIDIOC_S_EDID: {
2973 struct v4l2_edid *edid = parg;
2974
2975 if (edid->blocks) {
2976 if (edid->blocks > 256) {
2977 ret = -EINVAL;
2978 break;
2979 }
2980 *user_ptr = (void __user *)edid->edid;
2981 *kernel_ptr = (void **)&edid->edid;
2982 *array_size = edid->blocks * 128;
2983 ret = 1;
2984 }
2985 break;
2986 }
2987
2988 case VIDIOC_S_EXT_CTRLS:
2989 case VIDIOC_G_EXT_CTRLS:
2990 case VIDIOC_TRY_EXT_CTRLS: {
2991 struct v4l2_ext_controls *ctrls = parg;
2992
2993 if (ctrls->count != 0) {
2994 if (ctrls->count > V4L2_CID_MAX_CTRLS) {
2995 ret = -EINVAL;
2996 break;
2997 }
2998 *user_ptr = (void __user *)ctrls->controls;
2999 *kernel_ptr = (void **)&ctrls->controls;
3000 *array_size = sizeof(struct v4l2_ext_control)
3001 * ctrls->count;
3002 ret = 1;
3003 }
3004 break;
3005 }
3006 }
3007
3008 return ret;
3009}
3010
3011long
3012video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
3013 v4l2_kioctl func)
3014{
3015 char sbuf[128];
3016 void *mbuf = NULL;
3017 void *parg = (void *)arg;
3018 long err = -EINVAL;
3019 bool has_array_args;
3020 bool always_copy = false;
3021 size_t array_size = 0;
3022 void __user *user_ptr = NULL;
3023 void **kernel_ptr = NULL;
3024 const size_t ioc_size = _IOC_SIZE(cmd);
3025
3026 /* Copy arguments into temp kernel buffer */
3027 if (_IOC_DIR(cmd) != _IOC_NONE) {
3028 if (ioc_size <= sizeof(sbuf)) {
3029 parg = sbuf;
3030 } else {
3031 /* too big to allocate from stack */
3032 mbuf = kvmalloc(ioc_size, GFP_KERNEL);
3033 if (NULL == mbuf)
3034 return -ENOMEM;
3035 parg = mbuf;
3036 }
3037
3038 err = -EFAULT;
3039 if (_IOC_DIR(cmd) & _IOC_WRITE) {
3040 unsigned int n = ioc_size;
3041
3042 /*
3043 * In some cases, only a few fields are used as input,
3044 * i.e. when the app sets "index" and then the driver
3045 * fills in the rest of the structure for the thing
3046 * with that index. We only need to copy up the first
3047 * non-input field.
3048 */
3049 if (v4l2_is_known_ioctl(cmd)) {
3050 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags;
3051
3052 if (flags & INFO_FL_CLEAR_MASK)
3053 n = (flags & INFO_FL_CLEAR_MASK) >> 16;
3054 always_copy = flags & INFO_FL_ALWAYS_COPY;
3055 }
3056
3057 if (copy_from_user(parg, (void __user *)arg, n))
3058 goto out;
3059
3060 /* zero out anything we don't copy from userspace */
3061 if (n < ioc_size)
3062 memset((u8 *)parg + n, 0, ioc_size - n);
3063 } else {
3064 /* read-only ioctl */
3065 memset(parg, 0, ioc_size);
3066 }
3067 }
3068
3069 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
3070 if (err < 0)
3071 goto out;
3072 has_array_args = err;
3073
3074 if (has_array_args) {
3075 /*
3076 * When adding new types of array args, make sure that the
3077 * parent argument to ioctl (which contains the pointer to the
3078 * array) fits into sbuf (so that mbuf will still remain
3079 * unused up to here).
3080 */
3081 mbuf = kvmalloc(array_size, GFP_KERNEL);
3082 err = -ENOMEM;
3083 if (NULL == mbuf)
3084 goto out_array_args;
3085 err = -EFAULT;
3086 if (copy_from_user(mbuf, user_ptr, array_size))
3087 goto out_array_args;
3088 *kernel_ptr = mbuf;
3089 }
3090
3091 /* Handles IOCTL */
3092 err = func(file, cmd, parg);
3093 if (err == -ENOTTY || err == -ENOIOCTLCMD) {
3094 err = -ENOTTY;
3095 goto out;
3096 }
3097
3098 if (err == 0) {
3099 if (cmd == VIDIOC_DQBUF)
3100 trace_v4l2_dqbuf(video_devdata(file)->minor, parg);
3101 else if (cmd == VIDIOC_QBUF)
3102 trace_v4l2_qbuf(video_devdata(file)->minor, parg);
3103 }
3104
3105 if (has_array_args) {
3106 *kernel_ptr = (void __force *)user_ptr;
3107 if (copy_to_user(user_ptr, mbuf, array_size))
3108 err = -EFAULT;
3109 goto out_array_args;
3110 }
3111 /*
3112 * Some ioctls can return an error, but still have valid
3113 * results that must be returned.
3114 */
3115 if (err < 0 && !always_copy)
3116 goto out;
3117
3118out_array_args:
3119 /* Copy results into user buffer */
3120 switch (_IOC_DIR(cmd)) {
3121 case _IOC_READ:
3122 case (_IOC_WRITE | _IOC_READ):
3123 if (copy_to_user((void __user *)arg, parg, ioc_size))
3124 err = -EFAULT;
3125 break;
3126 }
3127
3128out:
3129 kvfree(mbuf);
3130 return err;
3131}
3132
3133long video_ioctl2(struct file *file,
3134 unsigned int cmd, unsigned long arg)
3135{
3136 return video_usercopy(file, cmd, arg, __video_do_ioctl);
3137}
3138EXPORT_SYMBOL(video_ioctl2);