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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, mbus_code=0x%04x, 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 p->mbus_code,
274 (int)sizeof(p->description), p->description);
275}
276
277static void v4l_print_format(const void *arg, bool write_only)
278{
279 const struct v4l2_format *p = arg;
280 const struct v4l2_pix_format *pix;
281 const struct v4l2_pix_format_mplane *mp;
282 const struct v4l2_vbi_format *vbi;
283 const struct v4l2_sliced_vbi_format *sliced;
284 const struct v4l2_window *win;
285 const struct v4l2_sdr_format *sdr;
286 const struct v4l2_meta_format *meta;
287 u32 planes;
288 unsigned i;
289
290 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
291 switch (p->type) {
292 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
293 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
294 pix = &p->fmt.pix;
295 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",
296 pix->width, pix->height,
297 (pix->pixelformat & 0xff),
298 (pix->pixelformat >> 8) & 0xff,
299 (pix->pixelformat >> 16) & 0xff,
300 (pix->pixelformat >> 24) & 0xff,
301 prt_names(pix->field, v4l2_field_names),
302 pix->bytesperline, pix->sizeimage,
303 pix->colorspace, pix->flags, pix->ycbcr_enc,
304 pix->quantization, pix->xfer_func);
305 break;
306 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
307 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
308 mp = &p->fmt.pix_mp;
309 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",
310 mp->width, mp->height,
311 (mp->pixelformat & 0xff),
312 (mp->pixelformat >> 8) & 0xff,
313 (mp->pixelformat >> 16) & 0xff,
314 (mp->pixelformat >> 24) & 0xff,
315 prt_names(mp->field, v4l2_field_names),
316 mp->colorspace, mp->num_planes, mp->flags,
317 mp->ycbcr_enc, mp->quantization, mp->xfer_func);
318 planes = min_t(u32, mp->num_planes, VIDEO_MAX_PLANES);
319 for (i = 0; i < planes; i++)
320 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i,
321 mp->plane_fmt[i].bytesperline,
322 mp->plane_fmt[i].sizeimage);
323 break;
324 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
325 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
326 win = &p->fmt.win;
327 /* Note: we can't print the clip list here since the clips
328 * pointer is a userspace pointer, not a kernelspace
329 * pointer. */
330 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",
331 win->w.width, win->w.height, win->w.left, win->w.top,
332 prt_names(win->field, v4l2_field_names),
333 win->chromakey, win->clipcount, win->clips,
334 win->bitmap, win->global_alpha);
335 break;
336 case V4L2_BUF_TYPE_VBI_CAPTURE:
337 case V4L2_BUF_TYPE_VBI_OUTPUT:
338 vbi = &p->fmt.vbi;
339 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n",
340 vbi->sampling_rate, vbi->offset,
341 vbi->samples_per_line,
342 (vbi->sample_format & 0xff),
343 (vbi->sample_format >> 8) & 0xff,
344 (vbi->sample_format >> 16) & 0xff,
345 (vbi->sample_format >> 24) & 0xff,
346 vbi->start[0], vbi->start[1],
347 vbi->count[0], vbi->count[1]);
348 break;
349 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
350 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
351 sliced = &p->fmt.sliced;
352 pr_cont(", service_set=0x%08x, io_size=%d\n",
353 sliced->service_set, sliced->io_size);
354 for (i = 0; i < 24; i++)
355 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
356 sliced->service_lines[0][i],
357 sliced->service_lines[1][i]);
358 break;
359 case V4L2_BUF_TYPE_SDR_CAPTURE:
360 case V4L2_BUF_TYPE_SDR_OUTPUT:
361 sdr = &p->fmt.sdr;
362 pr_cont(", pixelformat=%c%c%c%c\n",
363 (sdr->pixelformat >> 0) & 0xff,
364 (sdr->pixelformat >> 8) & 0xff,
365 (sdr->pixelformat >> 16) & 0xff,
366 (sdr->pixelformat >> 24) & 0xff);
367 break;
368 case V4L2_BUF_TYPE_META_CAPTURE:
369 case V4L2_BUF_TYPE_META_OUTPUT:
370 meta = &p->fmt.meta;
371 pr_cont(", dataformat=%c%c%c%c, buffersize=%u\n",
372 (meta->dataformat >> 0) & 0xff,
373 (meta->dataformat >> 8) & 0xff,
374 (meta->dataformat >> 16) & 0xff,
375 (meta->dataformat >> 24) & 0xff,
376 meta->buffersize);
377 break;
378 }
379}
380
381static void v4l_print_framebuffer(const void *arg, bool write_only)
382{
383 const struct v4l2_framebuffer *p = arg;
384
385 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",
386 p->capability, p->flags, p->base,
387 p->fmt.width, p->fmt.height,
388 (p->fmt.pixelformat & 0xff),
389 (p->fmt.pixelformat >> 8) & 0xff,
390 (p->fmt.pixelformat >> 16) & 0xff,
391 (p->fmt.pixelformat >> 24) & 0xff,
392 p->fmt.bytesperline, p->fmt.sizeimage,
393 p->fmt.colorspace);
394}
395
396static void v4l_print_buftype(const void *arg, bool write_only)
397{
398 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names));
399}
400
401static void v4l_print_modulator(const void *arg, bool write_only)
402{
403 const struct v4l2_modulator *p = arg;
404
405 if (write_only)
406 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans);
407 else
408 pr_cont("index=%u, name=%.*s, capability=0x%x, rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
409 p->index, (int)sizeof(p->name), p->name, p->capability,
410 p->rangelow, p->rangehigh, p->txsubchans);
411}
412
413static void v4l_print_tuner(const void *arg, bool write_only)
414{
415 const struct v4l2_tuner *p = arg;
416
417 if (write_only)
418 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode);
419 else
420 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",
421 p->index, (int)sizeof(p->name), p->name, p->type,
422 p->capability, p->rangelow,
423 p->rangehigh, p->signal, p->afc,
424 p->rxsubchans, p->audmode);
425}
426
427static void v4l_print_frequency(const void *arg, bool write_only)
428{
429 const struct v4l2_frequency *p = arg;
430
431 pr_cont("tuner=%u, type=%u, frequency=%u\n",
432 p->tuner, p->type, p->frequency);
433}
434
435static void v4l_print_standard(const void *arg, bool write_only)
436{
437 const struct v4l2_standard *p = arg;
438
439 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, framelines=%u\n",
440 p->index,
441 (unsigned long long)p->id, (int)sizeof(p->name), p->name,
442 p->frameperiod.numerator,
443 p->frameperiod.denominator,
444 p->framelines);
445}
446
447static void v4l_print_std(const void *arg, bool write_only)
448{
449 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg);
450}
451
452static void v4l_print_hw_freq_seek(const void *arg, bool write_only)
453{
454 const struct v4l2_hw_freq_seek *p = arg;
455
456 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, rangelow=%u, rangehigh=%u\n",
457 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing,
458 p->rangelow, p->rangehigh);
459}
460
461static void v4l_print_requestbuffers(const void *arg, bool write_only)
462{
463 const struct v4l2_requestbuffers *p = arg;
464
465 pr_cont("count=%d, type=%s, memory=%s\n",
466 p->count,
467 prt_names(p->type, v4l2_type_names),
468 prt_names(p->memory, v4l2_memory_names));
469}
470
471static void v4l_print_buffer(const void *arg, bool write_only)
472{
473 const struct v4l2_buffer *p = arg;
474 const struct v4l2_timecode *tc = &p->timecode;
475 const struct v4l2_plane *plane;
476 int i;
477
478 pr_cont("%02d:%02d:%02d.%09ld index=%d, type=%s, request_fd=%d, flags=0x%08x, field=%s, sequence=%d, memory=%s",
479 (int)p->timestamp.tv_sec / 3600,
480 ((int)p->timestamp.tv_sec / 60) % 60,
481 ((int)p->timestamp.tv_sec % 60),
482 (long)p->timestamp.tv_usec,
483 p->index,
484 prt_names(p->type, v4l2_type_names), p->request_fd,
485 p->flags, prt_names(p->field, v4l2_field_names),
486 p->sequence, prt_names(p->memory, v4l2_memory_names));
487
488 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
489 pr_cont("\n");
490 for (i = 0; i < p->length; ++i) {
491 plane = &p->m.planes[i];
492 printk(KERN_DEBUG
493 "plane %d: bytesused=%d, data_offset=0x%08x, offset/userptr=0x%lx, length=%d\n",
494 i, plane->bytesused, plane->data_offset,
495 plane->m.userptr, plane->length);
496 }
497 } else {
498 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n",
499 p->bytesused, p->m.userptr, p->length);
500 }
501
502 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, flags=0x%08x, frames=%d, userbits=0x%08x\n",
503 tc->hours, tc->minutes, tc->seconds,
504 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
505}
506
507static void v4l_print_exportbuffer(const void *arg, bool write_only)
508{
509 const struct v4l2_exportbuffer *p = arg;
510
511 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n",
512 p->fd, prt_names(p->type, v4l2_type_names),
513 p->index, p->plane, p->flags);
514}
515
516static void v4l_print_create_buffers(const void *arg, bool write_only)
517{
518 const struct v4l2_create_buffers *p = arg;
519
520 pr_cont("index=%d, count=%d, memory=%s, ",
521 p->index, p->count,
522 prt_names(p->memory, v4l2_memory_names));
523 v4l_print_format(&p->format, write_only);
524}
525
526static void v4l_print_streamparm(const void *arg, bool write_only)
527{
528 const struct v4l2_streamparm *p = arg;
529
530 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
531
532 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
533 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
534 const struct v4l2_captureparm *c = &p->parm.capture;
535
536 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, extendedmode=%d, readbuffers=%d\n",
537 c->capability, c->capturemode,
538 c->timeperframe.numerator, c->timeperframe.denominator,
539 c->extendedmode, c->readbuffers);
540 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
541 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
542 const struct v4l2_outputparm *c = &p->parm.output;
543
544 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, extendedmode=%d, writebuffers=%d\n",
545 c->capability, c->outputmode,
546 c->timeperframe.numerator, c->timeperframe.denominator,
547 c->extendedmode, c->writebuffers);
548 } else {
549 pr_cont("\n");
550 }
551}
552
553static void v4l_print_queryctrl(const void *arg, bool write_only)
554{
555 const struct v4l2_queryctrl *p = arg;
556
557 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, step=%d, default=%d, flags=0x%08x\n",
558 p->id, p->type, (int)sizeof(p->name), p->name,
559 p->minimum, p->maximum,
560 p->step, p->default_value, p->flags);
561}
562
563static void v4l_print_query_ext_ctrl(const void *arg, bool write_only)
564{
565 const struct v4l2_query_ext_ctrl *p = arg;
566
567 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",
568 p->id, p->type, (int)sizeof(p->name), p->name,
569 p->minimum, p->maximum,
570 p->step, p->default_value, p->flags,
571 p->elem_size, p->elems, p->nr_of_dims,
572 p->dims[0], p->dims[1], p->dims[2], p->dims[3]);
573}
574
575static void v4l_print_querymenu(const void *arg, bool write_only)
576{
577 const struct v4l2_querymenu *p = arg;
578
579 pr_cont("id=0x%x, index=%d\n", p->id, p->index);
580}
581
582static void v4l_print_control(const void *arg, bool write_only)
583{
584 const struct v4l2_control *p = arg;
585 const char *name = v4l2_ctrl_get_name(p->id);
586
587 if (name)
588 pr_cont("name=%s, ", name);
589 pr_cont("id=0x%x, value=%d\n", p->id, p->value);
590}
591
592static void v4l_print_ext_controls(const void *arg, bool write_only)
593{
594 const struct v4l2_ext_controls *p = arg;
595 int i;
596
597 pr_cont("which=0x%x, count=%d, error_idx=%d, request_fd=%d",
598 p->which, p->count, p->error_idx, p->request_fd);
599 for (i = 0; i < p->count; i++) {
600 unsigned int id = p->controls[i].id;
601 const char *name = v4l2_ctrl_get_name(id);
602
603 if (name)
604 pr_cont(", name=%s", name);
605 if (!p->controls[i].size)
606 pr_cont(", id/val=0x%x/0x%x", id, p->controls[i].value);
607 else
608 pr_cont(", id/size=0x%x/%u", id, p->controls[i].size);
609 }
610 pr_cont("\n");
611}
612
613static void v4l_print_cropcap(const void *arg, bool write_only)
614{
615 const struct v4l2_cropcap *p = arg;
616
617 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, defrect wxh=%dx%d, x,y=%d,%d, pixelaspect %d/%d\n",
618 prt_names(p->type, v4l2_type_names),
619 p->bounds.width, p->bounds.height,
620 p->bounds.left, p->bounds.top,
621 p->defrect.width, p->defrect.height,
622 p->defrect.left, p->defrect.top,
623 p->pixelaspect.numerator, p->pixelaspect.denominator);
624}
625
626static void v4l_print_crop(const void *arg, bool write_only)
627{
628 const struct v4l2_crop *p = arg;
629
630 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n",
631 prt_names(p->type, v4l2_type_names),
632 p->c.width, p->c.height,
633 p->c.left, p->c.top);
634}
635
636static void v4l_print_selection(const void *arg, bool write_only)
637{
638 const struct v4l2_selection *p = arg;
639
640 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n",
641 prt_names(p->type, v4l2_type_names),
642 p->target, p->flags,
643 p->r.width, p->r.height, p->r.left, p->r.top);
644}
645
646static void v4l_print_jpegcompression(const void *arg, bool write_only)
647{
648 const struct v4l2_jpegcompression *p = arg;
649
650 pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n",
651 p->quality, p->APPn, p->APP_len,
652 p->COM_len, p->jpeg_markers);
653}
654
655static void v4l_print_enc_idx(const void *arg, bool write_only)
656{
657 const struct v4l2_enc_idx *p = arg;
658
659 pr_cont("entries=%d, entries_cap=%d\n",
660 p->entries, p->entries_cap);
661}
662
663static void v4l_print_encoder_cmd(const void *arg, bool write_only)
664{
665 const struct v4l2_encoder_cmd *p = arg;
666
667 pr_cont("cmd=%d, flags=0x%x\n",
668 p->cmd, p->flags);
669}
670
671static void v4l_print_decoder_cmd(const void *arg, bool write_only)
672{
673 const struct v4l2_decoder_cmd *p = arg;
674
675 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags);
676
677 if (p->cmd == V4L2_DEC_CMD_START)
678 pr_info("speed=%d, format=%u\n",
679 p->start.speed, p->start.format);
680 else if (p->cmd == V4L2_DEC_CMD_STOP)
681 pr_info("pts=%llu\n", p->stop.pts);
682}
683
684static void v4l_print_dbg_chip_info(const void *arg, bool write_only)
685{
686 const struct v4l2_dbg_chip_info *p = arg;
687
688 pr_cont("type=%u, ", p->match.type);
689 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
690 pr_cont("name=%.*s, ",
691 (int)sizeof(p->match.name), p->match.name);
692 else
693 pr_cont("addr=%u, ", p->match.addr);
694 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name);
695}
696
697static void v4l_print_dbg_register(const void *arg, bool write_only)
698{
699 const struct v4l2_dbg_register *p = arg;
700
701 pr_cont("type=%u, ", p->match.type);
702 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
703 pr_cont("name=%.*s, ",
704 (int)sizeof(p->match.name), p->match.name);
705 else
706 pr_cont("addr=%u, ", p->match.addr);
707 pr_cont("reg=0x%llx, val=0x%llx\n",
708 p->reg, p->val);
709}
710
711static void v4l_print_dv_timings(const void *arg, bool write_only)
712{
713 const struct v4l2_dv_timings *p = arg;
714
715 switch (p->type) {
716 case V4L2_DV_BT_656_1120:
717 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",
718 p->bt.interlaced, p->bt.pixelclock,
719 p->bt.width, p->bt.height,
720 p->bt.polarities, p->bt.hfrontporch,
721 p->bt.hsync, p->bt.hbackporch,
722 p->bt.vfrontporch, p->bt.vsync,
723 p->bt.vbackporch, p->bt.il_vfrontporch,
724 p->bt.il_vsync, p->bt.il_vbackporch,
725 p->bt.standards, p->bt.flags);
726 break;
727 default:
728 pr_cont("type=%d\n", p->type);
729 break;
730 }
731}
732
733static void v4l_print_enum_dv_timings(const void *arg, bool write_only)
734{
735 const struct v4l2_enum_dv_timings *p = arg;
736
737 pr_cont("index=%u, ", p->index);
738 v4l_print_dv_timings(&p->timings, write_only);
739}
740
741static void v4l_print_dv_timings_cap(const void *arg, bool write_only)
742{
743 const struct v4l2_dv_timings_cap *p = arg;
744
745 switch (p->type) {
746 case V4L2_DV_BT_656_1120:
747 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
748 p->bt.min_width, p->bt.max_width,
749 p->bt.min_height, p->bt.max_height,
750 p->bt.min_pixelclock, p->bt.max_pixelclock,
751 p->bt.standards, p->bt.capabilities);
752 break;
753 default:
754 pr_cont("type=%u\n", p->type);
755 break;
756 }
757}
758
759static void v4l_print_frmsizeenum(const void *arg, bool write_only)
760{
761 const struct v4l2_frmsizeenum *p = arg;
762
763 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u",
764 p->index,
765 (p->pixel_format & 0xff),
766 (p->pixel_format >> 8) & 0xff,
767 (p->pixel_format >> 16) & 0xff,
768 (p->pixel_format >> 24) & 0xff,
769 p->type);
770 switch (p->type) {
771 case V4L2_FRMSIZE_TYPE_DISCRETE:
772 pr_cont(", wxh=%ux%u\n",
773 p->discrete.width, p->discrete.height);
774 break;
775 case V4L2_FRMSIZE_TYPE_STEPWISE:
776 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n",
777 p->stepwise.min_width,
778 p->stepwise.min_height,
779 p->stepwise.max_width,
780 p->stepwise.max_height,
781 p->stepwise.step_width,
782 p->stepwise.step_height);
783 break;
784 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
785 default:
786 pr_cont("\n");
787 break;
788 }
789}
790
791static void v4l_print_frmivalenum(const void *arg, bool write_only)
792{
793 const struct v4l2_frmivalenum *p = arg;
794
795 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u",
796 p->index,
797 (p->pixel_format & 0xff),
798 (p->pixel_format >> 8) & 0xff,
799 (p->pixel_format >> 16) & 0xff,
800 (p->pixel_format >> 24) & 0xff,
801 p->width, p->height, p->type);
802 switch (p->type) {
803 case V4L2_FRMIVAL_TYPE_DISCRETE:
804 pr_cont(", fps=%d/%d\n",
805 p->discrete.numerator,
806 p->discrete.denominator);
807 break;
808 case V4L2_FRMIVAL_TYPE_STEPWISE:
809 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n",
810 p->stepwise.min.numerator,
811 p->stepwise.min.denominator,
812 p->stepwise.max.numerator,
813 p->stepwise.max.denominator,
814 p->stepwise.step.numerator,
815 p->stepwise.step.denominator);
816 break;
817 case V4L2_FRMIVAL_TYPE_CONTINUOUS:
818 default:
819 pr_cont("\n");
820 break;
821 }
822}
823
824static void v4l_print_event(const void *arg, bool write_only)
825{
826 const struct v4l2_event *p = arg;
827 const struct v4l2_event_ctrl *c;
828
829 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%llu.%9.9llu\n",
830 p->type, p->pending, p->sequence, p->id,
831 p->timestamp.tv_sec, p->timestamp.tv_nsec);
832 switch (p->type) {
833 case V4L2_EVENT_VSYNC:
834 printk(KERN_DEBUG "field=%s\n",
835 prt_names(p->u.vsync.field, v4l2_field_names));
836 break;
837 case V4L2_EVENT_CTRL:
838 c = &p->u.ctrl;
839 printk(KERN_DEBUG "changes=0x%x, type=%u, ",
840 c->changes, c->type);
841 if (c->type == V4L2_CTRL_TYPE_INTEGER64)
842 pr_cont("value64=%lld, ", c->value64);
843 else
844 pr_cont("value=%d, ", c->value);
845 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n",
846 c->flags, c->minimum, c->maximum,
847 c->step, c->default_value);
848 break;
849 case V4L2_EVENT_FRAME_SYNC:
850 pr_cont("frame_sequence=%u\n",
851 p->u.frame_sync.frame_sequence);
852 break;
853 }
854}
855
856static void v4l_print_event_subscription(const void *arg, bool write_only)
857{
858 const struct v4l2_event_subscription *p = arg;
859
860 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
861 p->type, p->id, p->flags);
862}
863
864static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only)
865{
866 const struct v4l2_sliced_vbi_cap *p = arg;
867 int i;
868
869 pr_cont("type=%s, service_set=0x%08x\n",
870 prt_names(p->type, v4l2_type_names), p->service_set);
871 for (i = 0; i < 24; i++)
872 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
873 p->service_lines[0][i],
874 p->service_lines[1][i]);
875}
876
877static void v4l_print_freq_band(const void *arg, bool write_only)
878{
879 const struct v4l2_frequency_band *p = arg;
880
881 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n",
882 p->tuner, p->type, p->index,
883 p->capability, p->rangelow,
884 p->rangehigh, p->modulation);
885}
886
887static void v4l_print_edid(const void *arg, bool write_only)
888{
889 const struct v4l2_edid *p = arg;
890
891 pr_cont("pad=%u, start_block=%u, blocks=%u\n",
892 p->pad, p->start_block, p->blocks);
893}
894
895static void v4l_print_u32(const void *arg, bool write_only)
896{
897 pr_cont("value=%u\n", *(const u32 *)arg);
898}
899
900static void v4l_print_newline(const void *arg, bool write_only)
901{
902 pr_cont("\n");
903}
904
905static void v4l_print_default(const void *arg, bool write_only)
906{
907 pr_cont("driver-specific ioctl\n");
908}
909
910static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
911{
912 __u32 i;
913
914 /* zero the reserved fields */
915 c->reserved[0] = 0;
916 for (i = 0; i < c->count; i++)
917 c->controls[i].reserved2[0] = 0;
918
919 /* V4L2_CID_PRIVATE_BASE cannot be used as control class
920 when using extended controls.
921 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
922 is it allowed for backwards compatibility.
923 */
924 if (!allow_priv && c->which == V4L2_CID_PRIVATE_BASE)
925 return 0;
926 if (!c->which)
927 return 1;
928 /* Check that all controls are from the same control class. */
929 for (i = 0; i < c->count; i++) {
930 if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) {
931 c->error_idx = i;
932 return 0;
933 }
934 }
935 return 1;
936}
937
938static int check_fmt(struct file *file, enum v4l2_buf_type type)
939{
940 const u32 vid_caps = V4L2_CAP_VIDEO_CAPTURE |
941 V4L2_CAP_VIDEO_CAPTURE_MPLANE |
942 V4L2_CAP_VIDEO_OUTPUT |
943 V4L2_CAP_VIDEO_OUTPUT_MPLANE |
944 V4L2_CAP_VIDEO_M2M | V4L2_CAP_VIDEO_M2M_MPLANE;
945 const u32 meta_caps = V4L2_CAP_META_CAPTURE |
946 V4L2_CAP_META_OUTPUT;
947 struct video_device *vfd = video_devdata(file);
948 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
949 bool is_vid = vfd->vfl_type == VFL_TYPE_VIDEO &&
950 (vfd->device_caps & vid_caps);
951 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI;
952 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
953 bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH;
954 bool is_meta = vfd->vfl_type == VFL_TYPE_VIDEO &&
955 (vfd->device_caps & meta_caps);
956 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
957 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
958
959 if (ops == NULL)
960 return -EINVAL;
961
962 switch (type) {
963 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
964 if ((is_vid || is_tch) && is_rx &&
965 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane))
966 return 0;
967 break;
968 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
969 if ((is_vid || is_tch) && is_rx && ops->vidioc_g_fmt_vid_cap_mplane)
970 return 0;
971 break;
972 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
973 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay)
974 return 0;
975 break;
976 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
977 if (is_vid && is_tx &&
978 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane))
979 return 0;
980 break;
981 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
982 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane)
983 return 0;
984 break;
985 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
986 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay)
987 return 0;
988 break;
989 case V4L2_BUF_TYPE_VBI_CAPTURE:
990 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap)
991 return 0;
992 break;
993 case V4L2_BUF_TYPE_VBI_OUTPUT:
994 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out)
995 return 0;
996 break;
997 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
998 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap)
999 return 0;
1000 break;
1001 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1002 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out)
1003 return 0;
1004 break;
1005 case V4L2_BUF_TYPE_SDR_CAPTURE:
1006 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap)
1007 return 0;
1008 break;
1009 case V4L2_BUF_TYPE_SDR_OUTPUT:
1010 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out)
1011 return 0;
1012 break;
1013 case V4L2_BUF_TYPE_META_CAPTURE:
1014 if (is_meta && is_rx && ops->vidioc_g_fmt_meta_cap)
1015 return 0;
1016 break;
1017 case V4L2_BUF_TYPE_META_OUTPUT:
1018 if (is_meta && is_tx && ops->vidioc_g_fmt_meta_out)
1019 return 0;
1020 break;
1021 default:
1022 break;
1023 }
1024 return -EINVAL;
1025}
1026
1027static void v4l_sanitize_format(struct v4l2_format *fmt)
1028{
1029 unsigned int offset;
1030
1031 /* Make sure num_planes is not bogus */
1032 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ||
1033 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
1034 fmt->fmt.pix_mp.num_planes = min_t(u32, fmt->fmt.pix_mp.num_planes,
1035 VIDEO_MAX_PLANES);
1036
1037 /*
1038 * The v4l2_pix_format structure has been extended with fields that were
1039 * not previously required to be set to zero by applications. The priv
1040 * field, when set to a magic value, indicates the the extended fields
1041 * are valid. Otherwise they will contain undefined values. To simplify
1042 * the API towards drivers zero the extended fields and set the priv
1043 * field to the magic value when the extended pixel format structure
1044 * isn't used by applications.
1045 */
1046
1047 if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1048 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1049 return;
1050
1051 if (fmt->fmt.pix.priv == V4L2_PIX_FMT_PRIV_MAGIC)
1052 return;
1053
1054 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1055
1056 offset = offsetof(struct v4l2_pix_format, priv)
1057 + sizeof(fmt->fmt.pix.priv);
1058 memset(((void *)&fmt->fmt.pix) + offset, 0,
1059 sizeof(fmt->fmt.pix) - offset);
1060}
1061
1062static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
1063 struct file *file, void *fh, void *arg)
1064{
1065 struct v4l2_capability *cap = (struct v4l2_capability *)arg;
1066 struct video_device *vfd = video_devdata(file);
1067 int ret;
1068
1069 cap->version = LINUX_VERSION_CODE;
1070 cap->device_caps = vfd->device_caps;
1071 cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS;
1072
1073 ret = ops->vidioc_querycap(file, fh, cap);
1074
1075 /*
1076 * Drivers must not change device_caps, so check for this and
1077 * warn if this happened.
1078 */
1079 WARN_ON(cap->device_caps != vfd->device_caps);
1080 /*
1081 * Check that capabilities is a superset of
1082 * vfd->device_caps | V4L2_CAP_DEVICE_CAPS
1083 */
1084 WARN_ON((cap->capabilities &
1085 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)) !=
1086 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS));
1087 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT;
1088 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT;
1089
1090 return ret;
1091}
1092
1093static int v4l_g_input(const struct v4l2_ioctl_ops *ops,
1094 struct file *file, void *fh, void *arg)
1095{
1096 struct video_device *vfd = video_devdata(file);
1097
1098 if (vfd->device_caps & V4L2_CAP_IO_MC) {
1099 *(int *)arg = 0;
1100 return 0;
1101 }
1102
1103 return ops->vidioc_g_input(file, fh, arg);
1104}
1105
1106static int v4l_g_output(const struct v4l2_ioctl_ops *ops,
1107 struct file *file, void *fh, void *arg)
1108{
1109 struct video_device *vfd = video_devdata(file);
1110
1111 if (vfd->device_caps & V4L2_CAP_IO_MC) {
1112 *(int *)arg = 0;
1113 return 0;
1114 }
1115
1116 return ops->vidioc_g_output(file, fh, arg);
1117}
1118
1119static int v4l_s_input(const struct v4l2_ioctl_ops *ops,
1120 struct file *file, void *fh, void *arg)
1121{
1122 struct video_device *vfd = video_devdata(file);
1123 int ret;
1124
1125 ret = v4l_enable_media_source(vfd);
1126 if (ret)
1127 return ret;
1128
1129 if (vfd->device_caps & V4L2_CAP_IO_MC)
1130 return *(int *)arg ? -EINVAL : 0;
1131
1132 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg);
1133}
1134
1135static int v4l_s_output(const struct v4l2_ioctl_ops *ops,
1136 struct file *file, void *fh, void *arg)
1137{
1138 struct video_device *vfd = video_devdata(file);
1139
1140 if (vfd->device_caps & V4L2_CAP_IO_MC)
1141 return *(int *)arg ? -EINVAL : 0;
1142
1143 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg);
1144}
1145
1146static int v4l_g_priority(const struct v4l2_ioctl_ops *ops,
1147 struct file *file, void *fh, void *arg)
1148{
1149 struct video_device *vfd;
1150 u32 *p = arg;
1151
1152 vfd = video_devdata(file);
1153 *p = v4l2_prio_max(vfd->prio);
1154 return 0;
1155}
1156
1157static int v4l_s_priority(const struct v4l2_ioctl_ops *ops,
1158 struct file *file, void *fh, void *arg)
1159{
1160 struct video_device *vfd;
1161 struct v4l2_fh *vfh;
1162 u32 *p = arg;
1163
1164 vfd = video_devdata(file);
1165 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
1166 return -ENOTTY;
1167 vfh = file->private_data;
1168 return v4l2_prio_change(vfd->prio, &vfh->prio, *p);
1169}
1170
1171static int v4l_enuminput(const struct v4l2_ioctl_ops *ops,
1172 struct file *file, void *fh, void *arg)
1173{
1174 struct video_device *vfd = video_devdata(file);
1175 struct v4l2_input *p = arg;
1176
1177 /*
1178 * We set the flags for CAP_DV_TIMINGS &
1179 * CAP_STD here based on ioctl handler provided by the
1180 * driver. If the driver doesn't support these
1181 * for a specific input, it must override these flags.
1182 */
1183 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1184 p->capabilities |= V4L2_IN_CAP_STD;
1185
1186 if (vfd->device_caps & V4L2_CAP_IO_MC) {
1187 if (p->index)
1188 return -EINVAL;
1189 strscpy(p->name, vfd->name, sizeof(p->name));
1190 p->type = V4L2_INPUT_TYPE_CAMERA;
1191 return 0;
1192 }
1193
1194 return ops->vidioc_enum_input(file, fh, p);
1195}
1196
1197static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops,
1198 struct file *file, void *fh, void *arg)
1199{
1200 struct video_device *vfd = video_devdata(file);
1201 struct v4l2_output *p = arg;
1202
1203 /*
1204 * We set the flags for CAP_DV_TIMINGS &
1205 * CAP_STD here based on ioctl handler provided by the
1206 * driver. If the driver doesn't support these
1207 * for a specific output, it must override these flags.
1208 */
1209 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1210 p->capabilities |= V4L2_OUT_CAP_STD;
1211
1212 if (vfd->device_caps & V4L2_CAP_IO_MC) {
1213 if (p->index)
1214 return -EINVAL;
1215 strscpy(p->name, vfd->name, sizeof(p->name));
1216 p->type = V4L2_OUTPUT_TYPE_ANALOG;
1217 return 0;
1218 }
1219
1220 return ops->vidioc_enum_output(file, fh, p);
1221}
1222
1223static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
1224{
1225 const unsigned sz = sizeof(fmt->description);
1226 const char *descr = NULL;
1227 u32 flags = 0;
1228
1229 /*
1230 * We depart from the normal coding style here since the descriptions
1231 * should be aligned so it is easy to see which descriptions will be
1232 * longer than 31 characters (the max length for a description).
1233 * And frankly, this is easier to read anyway.
1234 *
1235 * Note that gcc will use O(log N) comparisons to find the right case.
1236 */
1237 switch (fmt->pixelformat) {
1238 /* Max description length mask: descr = "0123456789012345678901234567890" */
1239 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break;
1240 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break;
1241 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break;
1242 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break;
1243 case V4L2_PIX_FMT_RGBA444: descr = "16-bit RGBA 4-4-4-4"; break;
1244 case V4L2_PIX_FMT_RGBX444: descr = "16-bit RGBX 4-4-4-4"; break;
1245 case V4L2_PIX_FMT_ABGR444: descr = "16-bit ABGR 4-4-4-4"; break;
1246 case V4L2_PIX_FMT_XBGR444: descr = "16-bit XBGR 4-4-4-4"; break;
1247 case V4L2_PIX_FMT_BGRA444: descr = "16-bit BGRA 4-4-4-4"; break;
1248 case V4L2_PIX_FMT_BGRX444: descr = "16-bit BGRX 4-4-4-4"; break;
1249 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break;
1250 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break;
1251 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break;
1252 case V4L2_PIX_FMT_ABGR555: descr = "16-bit ABGR 1-5-5-5"; break;
1253 case V4L2_PIX_FMT_XBGR555: descr = "16-bit XBGR 1-5-5-5"; break;
1254 case V4L2_PIX_FMT_RGBA555: descr = "16-bit RGBA 5-5-5-1"; break;
1255 case V4L2_PIX_FMT_RGBX555: descr = "16-bit RGBX 5-5-5-1"; break;
1256 case V4L2_PIX_FMT_BGRA555: descr = "16-bit BGRA 5-5-5-1"; break;
1257 case V4L2_PIX_FMT_BGRX555: descr = "16-bit BGRX 5-5-5-1"; break;
1258 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break;
1259 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break;
1260 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break;
1261 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break;
1262 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break;
1263 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break;
1264 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break;
1265 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break;
1266 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break;
1267 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break;
1268 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break;
1269 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break;
1270 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break;
1271 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break;
1272 case V4L2_PIX_FMT_BGRA32: descr = "32-bit ABGR 8-8-8-8"; break;
1273 case V4L2_PIX_FMT_BGRX32: descr = "32-bit XBGR 8-8-8-8"; break;
1274 case V4L2_PIX_FMT_RGBA32: descr = "32-bit RGBA 8-8-8-8"; break;
1275 case V4L2_PIX_FMT_RGBX32: descr = "32-bit RGBX 8-8-8-8"; break;
1276 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break;
1277 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break;
1278 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break;
1279 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break;
1280 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break;
1281 case V4L2_PIX_FMT_Y14: descr = "14-bit Greyscale"; break;
1282 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break;
1283 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break;
1284 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break;
1285 case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break;
1286 case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break;
1287 case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break;
1288 case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break;
1289 case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break;
1290 case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break;
1291 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break;
1292 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break;
1293 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break;
1294 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break;
1295 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break;
1296 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break;
1297 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break;
1298 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break;
1299 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break;
1300 case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break;
1301 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break;
1302 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break;
1303 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break;
1304 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break;
1305 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break;
1306 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break;
1307 case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break;
1308 case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break;
1309 case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break;
1310 case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break;
1311 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break;
1312 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break;
1313 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break;
1314 case V4L2_PIX_FMT_HM12: descr = "YUV 4:2:0 (16x16 Macroblocks)"; break;
1315 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break;
1316 case V4L2_PIX_FMT_NV12: descr = "Y/CbCr 4:2:0"; break;
1317 case V4L2_PIX_FMT_NV21: descr = "Y/CrCb 4:2:0"; break;
1318 case V4L2_PIX_FMT_NV16: descr = "Y/CbCr 4:2:2"; break;
1319 case V4L2_PIX_FMT_NV61: descr = "Y/CrCb 4:2:2"; break;
1320 case V4L2_PIX_FMT_NV24: descr = "Y/CbCr 4:4:4"; break;
1321 case V4L2_PIX_FMT_NV42: descr = "Y/CrCb 4:4:4"; break;
1322 case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break;
1323 case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break;
1324 case V4L2_PIX_FMT_NV16M: descr = "Y/CbCr 4:2:2 (N-C)"; break;
1325 case V4L2_PIX_FMT_NV61M: descr = "Y/CrCb 4:2:2 (N-C)"; break;
1326 case V4L2_PIX_FMT_NV12MT: descr = "Y/CbCr 4:2:0 (64x32 MB, N-C)"; break;
1327 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/CbCr 4:2:0 (16x16 MB, N-C)"; break;
1328 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break;
1329 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break;
1330 case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break;
1331 case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break;
1332 case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break;
1333 case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break;
1334 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break;
1335 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break;
1336 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break;
1337 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break;
1338 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break;
1339 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break;
1340 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break;
1341 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break;
1342 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break;
1343 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break;
1344 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break;
1345 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break;
1346 case V4L2_PIX_FMT_IPU3_SBGGR10: descr = "10-bit bayer BGGR IPU3 Packed"; break;
1347 case V4L2_PIX_FMT_IPU3_SGBRG10: descr = "10-bit bayer GBRG IPU3 Packed"; break;
1348 case V4L2_PIX_FMT_IPU3_SGRBG10: descr = "10-bit bayer GRBG IPU3 Packed"; break;
1349 case V4L2_PIX_FMT_IPU3_SRGGB10: descr = "10-bit bayer RGGB IPU3 Packed"; break;
1350 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break;
1351 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break;
1352 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break;
1353 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break;
1354 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break;
1355 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break;
1356 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break;
1357 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break;
1358 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break;
1359 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break;
1360 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break;
1361 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break;
1362 case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break;
1363 case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break;
1364 case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break;
1365 case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break;
1366 case V4L2_PIX_FMT_SBGGR14: descr = "14-bit Bayer BGBG/GRGR"; break;
1367 case V4L2_PIX_FMT_SGBRG14: descr = "14-bit Bayer GBGB/RGRG"; break;
1368 case V4L2_PIX_FMT_SGRBG14: descr = "14-bit Bayer GRGR/BGBG"; break;
1369 case V4L2_PIX_FMT_SRGGB14: descr = "14-bit Bayer RGRG/GBGB"; break;
1370 case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break;
1371 case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break;
1372 case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break;
1373 case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break;
1374 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break;
1375 case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break;
1376 case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break;
1377 case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break;
1378 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break;
1379 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break;
1380 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break;
1381 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break;
1382 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break;
1383 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break;
1384 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break;
1385 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break;
1386 case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break;
1387 case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break;
1388 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break;
1389 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break;
1390 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break;
1391 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break;
1392 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break;
1393 case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break;
1394 case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break;
1395 case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break;
1396 case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit Signed Deltas"; break;
1397 case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit Signed Deltas"; break;
1398 case V4L2_TCH_FMT_TU16: descr = "16-bit Unsigned Touch Data"; break;
1399 case V4L2_TCH_FMT_TU08: descr = "8-bit Unsigned Touch Data"; break;
1400 case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break;
1401 case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break;
1402 case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break;
1403 case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break;
1404 case V4L2_META_FMT_VIVID: descr = "Vivid Metadata"; break;
1405
1406 default:
1407 /* Compressed formats */
1408 flags = V4L2_FMT_FLAG_COMPRESSED;
1409 switch (fmt->pixelformat) {
1410 /* Max description length mask: descr = "0123456789012345678901234567890" */
1411 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break;
1412 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break;
1413 case V4L2_PIX_FMT_DV: descr = "1394"; break;
1414 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break;
1415 case V4L2_PIX_FMT_H264: descr = "H.264"; break;
1416 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break;
1417 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break;
1418 case V4L2_PIX_FMT_H264_SLICE: descr = "H.264 Parsed Slice Data"; break;
1419 case V4L2_PIX_FMT_H263: descr = "H.263"; break;
1420 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break;
1421 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break;
1422 case V4L2_PIX_FMT_MPEG2_SLICE: descr = "MPEG-2 Parsed Slice Data"; break;
1423 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 Part 2 ES"; break;
1424 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break;
1425 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break;
1426 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break;
1427 case V4L2_PIX_FMT_VP8: descr = "VP8"; break;
1428 case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break;
1429 case V4L2_PIX_FMT_VP9: descr = "VP9"; break;
1430 case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */
1431 case V4L2_PIX_FMT_HEVC_SLICE: descr = "HEVC Parsed Slice Data"; break;
1432 case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */
1433 case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */
1434 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break;
1435 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break;
1436 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break;
1437 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break;
1438 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break;
1439 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break;
1440 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break;
1441 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break;
1442 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break;
1443 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break;
1444 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break;
1445 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break;
1446 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break;
1447 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break;
1448 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break;
1449 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break;
1450 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break;
1451 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break;
1452 case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break;
1453 case V4L2_PIX_FMT_SUNXI_TILED_NV12: descr = "Sunxi Tiled NV12 Format"; break;
1454 default:
1455 if (fmt->description[0])
1456 return;
1457 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat);
1458 flags = 0;
1459 snprintf(fmt->description, sz, "%c%c%c%c%s",
1460 (char)(fmt->pixelformat & 0x7f),
1461 (char)((fmt->pixelformat >> 8) & 0x7f),
1462 (char)((fmt->pixelformat >> 16) & 0x7f),
1463 (char)((fmt->pixelformat >> 24) & 0x7f),
1464 (fmt->pixelformat & (1UL << 31)) ? "-BE" : "");
1465 break;
1466 }
1467 }
1468
1469 if (descr)
1470 WARN_ON(strscpy(fmt->description, descr, sz) < 0);
1471 fmt->flags |= flags;
1472}
1473
1474static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
1475 struct file *file, void *fh, void *arg)
1476{
1477 struct video_device *vdev = video_devdata(file);
1478 struct v4l2_fmtdesc *p = arg;
1479 int ret = check_fmt(file, p->type);
1480 u32 mbus_code;
1481 u32 cap_mask;
1482
1483 if (ret)
1484 return ret;
1485 ret = -EINVAL;
1486
1487 if (!(vdev->device_caps & V4L2_CAP_IO_MC))
1488 p->mbus_code = 0;
1489
1490 mbus_code = p->mbus_code;
1491 CLEAR_AFTER_FIELD(p, type);
1492 p->mbus_code = mbus_code;
1493
1494 switch (p->type) {
1495 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1496 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1497 cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE |
1498 V4L2_CAP_VIDEO_M2M_MPLANE;
1499 if (!!(vdev->device_caps & cap_mask) !=
1500 (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE))
1501 break;
1502
1503 if (unlikely(!ops->vidioc_enum_fmt_vid_cap))
1504 break;
1505 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
1506 break;
1507 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1508 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay))
1509 break;
1510 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
1511 break;
1512 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1513 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1514 cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE |
1515 V4L2_CAP_VIDEO_M2M_MPLANE;
1516 if (!!(vdev->device_caps & cap_mask) !=
1517 (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE))
1518 break;
1519
1520 if (unlikely(!ops->vidioc_enum_fmt_vid_out))
1521 break;
1522 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg);
1523 break;
1524 case V4L2_BUF_TYPE_SDR_CAPTURE:
1525 if (unlikely(!ops->vidioc_enum_fmt_sdr_cap))
1526 break;
1527 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg);
1528 break;
1529 case V4L2_BUF_TYPE_SDR_OUTPUT:
1530 if (unlikely(!ops->vidioc_enum_fmt_sdr_out))
1531 break;
1532 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg);
1533 break;
1534 case V4L2_BUF_TYPE_META_CAPTURE:
1535 if (unlikely(!ops->vidioc_enum_fmt_meta_cap))
1536 break;
1537 ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg);
1538 break;
1539 case V4L2_BUF_TYPE_META_OUTPUT:
1540 if (unlikely(!ops->vidioc_enum_fmt_meta_out))
1541 break;
1542 ret = ops->vidioc_enum_fmt_meta_out(file, fh, arg);
1543 break;
1544 }
1545 if (ret == 0)
1546 v4l_fill_fmtdesc(p);
1547 return ret;
1548}
1549
1550static void v4l_pix_format_touch(struct v4l2_pix_format *p)
1551{
1552 /*
1553 * The v4l2_pix_format structure contains fields that make no sense for
1554 * touch. Set them to default values in this case.
1555 */
1556
1557 p->field = V4L2_FIELD_NONE;
1558 p->colorspace = V4L2_COLORSPACE_RAW;
1559 p->flags = 0;
1560 p->ycbcr_enc = 0;
1561 p->quantization = 0;
1562 p->xfer_func = 0;
1563}
1564
1565static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
1566 struct file *file, void *fh, void *arg)
1567{
1568 struct v4l2_format *p = arg;
1569 struct video_device *vfd = video_devdata(file);
1570 int ret = check_fmt(file, p->type);
1571
1572 if (ret)
1573 return ret;
1574
1575 /*
1576 * fmt can't be cleared for these overlay types due to the 'clips'
1577 * 'clipcount' and 'bitmap' pointers in struct v4l2_window.
1578 * Those are provided by the user. So handle these two overlay types
1579 * first, and then just do a simple memset for the other types.
1580 */
1581 switch (p->type) {
1582 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1583 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: {
1584 struct v4l2_clip __user *clips = p->fmt.win.clips;
1585 u32 clipcount = p->fmt.win.clipcount;
1586 void __user *bitmap = p->fmt.win.bitmap;
1587
1588 memset(&p->fmt, 0, sizeof(p->fmt));
1589 p->fmt.win.clips = clips;
1590 p->fmt.win.clipcount = clipcount;
1591 p->fmt.win.bitmap = bitmap;
1592 break;
1593 }
1594 default:
1595 memset(&p->fmt, 0, sizeof(p->fmt));
1596 break;
1597 }
1598
1599 switch (p->type) {
1600 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1601 if (unlikely(!ops->vidioc_g_fmt_vid_cap))
1602 break;
1603 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1604 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg);
1605 /* just in case the driver zeroed it again */
1606 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1607 if (vfd->vfl_type == VFL_TYPE_TOUCH)
1608 v4l_pix_format_touch(&p->fmt.pix);
1609 return ret;
1610 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1611 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
1612 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1613 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
1614 case V4L2_BUF_TYPE_VBI_CAPTURE:
1615 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
1616 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1617 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
1618 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1619 if (unlikely(!ops->vidioc_g_fmt_vid_out))
1620 break;
1621 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1622 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg);
1623 /* just in case the driver zeroed it again */
1624 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1625 return ret;
1626 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1627 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
1628 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1629 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
1630 case V4L2_BUF_TYPE_VBI_OUTPUT:
1631 return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
1632 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1633 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
1634 case V4L2_BUF_TYPE_SDR_CAPTURE:
1635 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg);
1636 case V4L2_BUF_TYPE_SDR_OUTPUT:
1637 return ops->vidioc_g_fmt_sdr_out(file, fh, arg);
1638 case V4L2_BUF_TYPE_META_CAPTURE:
1639 return ops->vidioc_g_fmt_meta_cap(file, fh, arg);
1640 case V4L2_BUF_TYPE_META_OUTPUT:
1641 return ops->vidioc_g_fmt_meta_out(file, fh, arg);
1642 }
1643 return -EINVAL;
1644}
1645
1646static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
1647 struct file *file, void *fh, void *arg)
1648{
1649 struct v4l2_format *p = arg;
1650 struct video_device *vfd = video_devdata(file);
1651 int ret = check_fmt(file, p->type);
1652 unsigned int i;
1653
1654 if (ret)
1655 return ret;
1656
1657 ret = v4l_enable_media_source(vfd);
1658 if (ret)
1659 return ret;
1660 v4l_sanitize_format(p);
1661
1662 switch (p->type) {
1663 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1664 if (unlikely(!ops->vidioc_s_fmt_vid_cap))
1665 break;
1666 CLEAR_AFTER_FIELD(p, fmt.pix);
1667 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg);
1668 /* just in case the driver zeroed it again */
1669 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1670 if (vfd->vfl_type == VFL_TYPE_TOUCH)
1671 v4l_pix_format_touch(&p->fmt.pix);
1672 return ret;
1673 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1674 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane))
1675 break;
1676 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
1677 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1678 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i],
1679 bytesperline);
1680 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
1681 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1682 if (unlikely(!ops->vidioc_s_fmt_vid_overlay))
1683 break;
1684 CLEAR_AFTER_FIELD(p, fmt.win);
1685 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
1686 case V4L2_BUF_TYPE_VBI_CAPTURE:
1687 if (unlikely(!ops->vidioc_s_fmt_vbi_cap))
1688 break;
1689 CLEAR_AFTER_FIELD(p, fmt.vbi.flags);
1690 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
1691 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1692 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap))
1693 break;
1694 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size);
1695 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
1696 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1697 if (unlikely(!ops->vidioc_s_fmt_vid_out))
1698 break;
1699 CLEAR_AFTER_FIELD(p, fmt.pix);
1700 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg);
1701 /* just in case the driver zeroed it again */
1702 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1703 return ret;
1704 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1705 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane))
1706 break;
1707 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
1708 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1709 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i],
1710 bytesperline);
1711 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
1712 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1713 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay))
1714 break;
1715 CLEAR_AFTER_FIELD(p, fmt.win);
1716 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
1717 case V4L2_BUF_TYPE_VBI_OUTPUT:
1718 if (unlikely(!ops->vidioc_s_fmt_vbi_out))
1719 break;
1720 CLEAR_AFTER_FIELD(p, fmt.vbi.flags);
1721 return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
1722 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1723 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out))
1724 break;
1725 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size);
1726 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
1727 case V4L2_BUF_TYPE_SDR_CAPTURE:
1728 if (unlikely(!ops->vidioc_s_fmt_sdr_cap))
1729 break;
1730 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize);
1731 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg);
1732 case V4L2_BUF_TYPE_SDR_OUTPUT:
1733 if (unlikely(!ops->vidioc_s_fmt_sdr_out))
1734 break;
1735 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize);
1736 return ops->vidioc_s_fmt_sdr_out(file, fh, arg);
1737 case V4L2_BUF_TYPE_META_CAPTURE:
1738 if (unlikely(!ops->vidioc_s_fmt_meta_cap))
1739 break;
1740 CLEAR_AFTER_FIELD(p, fmt.meta);
1741 return ops->vidioc_s_fmt_meta_cap(file, fh, arg);
1742 case V4L2_BUF_TYPE_META_OUTPUT:
1743 if (unlikely(!ops->vidioc_s_fmt_meta_out))
1744 break;
1745 CLEAR_AFTER_FIELD(p, fmt.meta);
1746 return ops->vidioc_s_fmt_meta_out(file, fh, arg);
1747 }
1748 return -EINVAL;
1749}
1750
1751static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
1752 struct file *file, void *fh, void *arg)
1753{
1754 struct v4l2_format *p = arg;
1755 struct video_device *vfd = video_devdata(file);
1756 int ret = check_fmt(file, p->type);
1757 unsigned int i;
1758
1759 if (ret)
1760 return ret;
1761
1762 v4l_sanitize_format(p);
1763
1764 switch (p->type) {
1765 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1766 if (unlikely(!ops->vidioc_try_fmt_vid_cap))
1767 break;
1768 CLEAR_AFTER_FIELD(p, fmt.pix);
1769 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg);
1770 /* just in case the driver zeroed it again */
1771 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1772 if (vfd->vfl_type == VFL_TYPE_TOUCH)
1773 v4l_pix_format_touch(&p->fmt.pix);
1774 return ret;
1775 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1776 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane))
1777 break;
1778 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
1779 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1780 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i],
1781 bytesperline);
1782 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
1783 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1784 if (unlikely(!ops->vidioc_try_fmt_vid_overlay))
1785 break;
1786 CLEAR_AFTER_FIELD(p, fmt.win);
1787 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
1788 case V4L2_BUF_TYPE_VBI_CAPTURE:
1789 if (unlikely(!ops->vidioc_try_fmt_vbi_cap))
1790 break;
1791 CLEAR_AFTER_FIELD(p, fmt.vbi.flags);
1792 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
1793 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1794 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap))
1795 break;
1796 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size);
1797 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
1798 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1799 if (unlikely(!ops->vidioc_try_fmt_vid_out))
1800 break;
1801 CLEAR_AFTER_FIELD(p, fmt.pix);
1802 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg);
1803 /* just in case the driver zeroed it again */
1804 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1805 return ret;
1806 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1807 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane))
1808 break;
1809 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
1810 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1811 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i],
1812 bytesperline);
1813 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
1814 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1815 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay))
1816 break;
1817 CLEAR_AFTER_FIELD(p, fmt.win);
1818 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
1819 case V4L2_BUF_TYPE_VBI_OUTPUT:
1820 if (unlikely(!ops->vidioc_try_fmt_vbi_out))
1821 break;
1822 CLEAR_AFTER_FIELD(p, fmt.vbi.flags);
1823 return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
1824 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1825 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out))
1826 break;
1827 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size);
1828 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
1829 case V4L2_BUF_TYPE_SDR_CAPTURE:
1830 if (unlikely(!ops->vidioc_try_fmt_sdr_cap))
1831 break;
1832 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize);
1833 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg);
1834 case V4L2_BUF_TYPE_SDR_OUTPUT:
1835 if (unlikely(!ops->vidioc_try_fmt_sdr_out))
1836 break;
1837 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize);
1838 return ops->vidioc_try_fmt_sdr_out(file, fh, arg);
1839 case V4L2_BUF_TYPE_META_CAPTURE:
1840 if (unlikely(!ops->vidioc_try_fmt_meta_cap))
1841 break;
1842 CLEAR_AFTER_FIELD(p, fmt.meta);
1843 return ops->vidioc_try_fmt_meta_cap(file, fh, arg);
1844 case V4L2_BUF_TYPE_META_OUTPUT:
1845 if (unlikely(!ops->vidioc_try_fmt_meta_out))
1846 break;
1847 CLEAR_AFTER_FIELD(p, fmt.meta);
1848 return ops->vidioc_try_fmt_meta_out(file, fh, arg);
1849 }
1850 return -EINVAL;
1851}
1852
1853static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
1854 struct file *file, void *fh, void *arg)
1855{
1856 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
1857}
1858
1859static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
1860 struct file *file, void *fh, void *arg)
1861{
1862 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
1863}
1864
1865static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,
1866 struct file *file, void *fh, void *arg)
1867{
1868 struct video_device *vfd = video_devdata(file);
1869 struct v4l2_tuner *p = arg;
1870 int err;
1871
1872 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1873 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1874 err = ops->vidioc_g_tuner(file, fh, p);
1875 if (!err)
1876 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1877 return err;
1878}
1879
1880static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
1881 struct file *file, void *fh, void *arg)
1882{
1883 struct video_device *vfd = video_devdata(file);
1884 struct v4l2_tuner *p = arg;
1885 int ret;
1886
1887 ret = v4l_enable_media_source(vfd);
1888 if (ret)
1889 return ret;
1890 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1891 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1892 return ops->vidioc_s_tuner(file, fh, p);
1893}
1894
1895static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,
1896 struct file *file, void *fh, void *arg)
1897{
1898 struct video_device *vfd = video_devdata(file);
1899 struct v4l2_modulator *p = arg;
1900 int err;
1901
1902 if (vfd->vfl_type == VFL_TYPE_RADIO)
1903 p->type = V4L2_TUNER_RADIO;
1904
1905 err = ops->vidioc_g_modulator(file, fh, p);
1906 if (!err)
1907 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1908 return err;
1909}
1910
1911static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops,
1912 struct file *file, void *fh, void *arg)
1913{
1914 struct video_device *vfd = video_devdata(file);
1915 struct v4l2_modulator *p = arg;
1916
1917 if (vfd->vfl_type == VFL_TYPE_RADIO)
1918 p->type = V4L2_TUNER_RADIO;
1919
1920 return ops->vidioc_s_modulator(file, fh, p);
1921}
1922
1923static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
1924 struct file *file, void *fh, void *arg)
1925{
1926 struct video_device *vfd = video_devdata(file);
1927 struct v4l2_frequency *p = arg;
1928
1929 if (vfd->vfl_type == VFL_TYPE_SDR)
1930 p->type = V4L2_TUNER_SDR;
1931 else
1932 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1933 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1934 return ops->vidioc_g_frequency(file, fh, p);
1935}
1936
1937static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
1938 struct file *file, void *fh, void *arg)
1939{
1940 struct video_device *vfd = video_devdata(file);
1941 const struct v4l2_frequency *p = arg;
1942 enum v4l2_tuner_type type;
1943 int ret;
1944
1945 ret = v4l_enable_media_source(vfd);
1946 if (ret)
1947 return ret;
1948 if (vfd->vfl_type == VFL_TYPE_SDR) {
1949 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)
1950 return -EINVAL;
1951 } else {
1952 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1953 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1954 if (type != p->type)
1955 return -EINVAL;
1956 }
1957 return ops->vidioc_s_frequency(file, fh, p);
1958}
1959
1960static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
1961 struct file *file, void *fh, void *arg)
1962{
1963 struct video_device *vfd = video_devdata(file);
1964 struct v4l2_standard *p = arg;
1965
1966 return v4l_video_std_enumstd(p, vfd->tvnorms);
1967}
1968
1969static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
1970 struct file *file, void *fh, void *arg)
1971{
1972 struct video_device *vfd = video_devdata(file);
1973 v4l2_std_id id = *(v4l2_std_id *)arg, norm;
1974 int ret;
1975
1976 ret = v4l_enable_media_source(vfd);
1977 if (ret)
1978 return ret;
1979 norm = id & vfd->tvnorms;
1980 if (vfd->tvnorms && !norm) /* Check if std is supported */
1981 return -EINVAL;
1982
1983 /* Calls the specific handler */
1984 return ops->vidioc_s_std(file, fh, norm);
1985}
1986
1987static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
1988 struct file *file, void *fh, void *arg)
1989{
1990 struct video_device *vfd = video_devdata(file);
1991 v4l2_std_id *p = arg;
1992 int ret;
1993
1994 ret = v4l_enable_media_source(vfd);
1995 if (ret)
1996 return ret;
1997 /*
1998 * If no signal is detected, then the driver should return
1999 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with
2000 * any standards that do not apply removed.
2001 *
2002 * This means that tuners, audio and video decoders can join
2003 * their efforts to improve the standards detection.
2004 */
2005 *p = vfd->tvnorms;
2006 return ops->vidioc_querystd(file, fh, arg);
2007}
2008
2009static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
2010 struct file *file, void *fh, void *arg)
2011{
2012 struct video_device *vfd = video_devdata(file);
2013 struct v4l2_hw_freq_seek *p = arg;
2014 enum v4l2_tuner_type type;
2015 int ret;
2016
2017 ret = v4l_enable_media_source(vfd);
2018 if (ret)
2019 return ret;
2020 /* s_hw_freq_seek is not supported for SDR for now */
2021 if (vfd->vfl_type == VFL_TYPE_SDR)
2022 return -EINVAL;
2023
2024 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2025 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2026 if (p->type != type)
2027 return -EINVAL;
2028 return ops->vidioc_s_hw_freq_seek(file, fh, p);
2029}
2030
2031static int v4l_overlay(const struct v4l2_ioctl_ops *ops,
2032 struct file *file, void *fh, void *arg)
2033{
2034 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg);
2035}
2036
2037static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,
2038 struct file *file, void *fh, void *arg)
2039{
2040 struct v4l2_requestbuffers *p = arg;
2041 int ret = check_fmt(file, p->type);
2042
2043 if (ret)
2044 return ret;
2045
2046 CLEAR_AFTER_FIELD(p, capabilities);
2047
2048 return ops->vidioc_reqbufs(file, fh, p);
2049}
2050
2051static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,
2052 struct file *file, void *fh, void *arg)
2053{
2054 struct v4l2_buffer *p = arg;
2055 int ret = check_fmt(file, p->type);
2056
2057 return ret ? ret : ops->vidioc_querybuf(file, fh, p);
2058}
2059
2060static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,
2061 struct file *file, void *fh, void *arg)
2062{
2063 struct v4l2_buffer *p = arg;
2064 int ret = check_fmt(file, p->type);
2065
2066 return ret ? ret : ops->vidioc_qbuf(file, fh, p);
2067}
2068
2069static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,
2070 struct file *file, void *fh, void *arg)
2071{
2072 struct v4l2_buffer *p = arg;
2073 int ret = check_fmt(file, p->type);
2074
2075 return ret ? ret : ops->vidioc_dqbuf(file, fh, p);
2076}
2077
2078static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
2079 struct file *file, void *fh, void *arg)
2080{
2081 struct v4l2_create_buffers *create = arg;
2082 int ret = check_fmt(file, create->format.type);
2083
2084 if (ret)
2085 return ret;
2086
2087 CLEAR_AFTER_FIELD(create, capabilities);
2088
2089 v4l_sanitize_format(&create->format);
2090
2091 ret = ops->vidioc_create_bufs(file, fh, create);
2092
2093 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
2094 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
2095 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
2096
2097 return ret;
2098}
2099
2100static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
2101 struct file *file, void *fh, void *arg)
2102{
2103 struct v4l2_buffer *b = arg;
2104 int ret = check_fmt(file, b->type);
2105
2106 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
2107}
2108
2109static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
2110 struct file *file, void *fh, void *arg)
2111{
2112 struct v4l2_streamparm *p = arg;
2113 v4l2_std_id std;
2114 int ret = check_fmt(file, p->type);
2115
2116 if (ret)
2117 return ret;
2118 if (ops->vidioc_g_parm)
2119 return ops->vidioc_g_parm(file, fh, p);
2120 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
2121 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2122 return -EINVAL;
2123 p->parm.capture.readbuffers = 2;
2124 ret = ops->vidioc_g_std(file, fh, &std);
2125 if (ret == 0)
2126 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe);
2127 return ret;
2128}
2129
2130static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
2131 struct file *file, void *fh, void *arg)
2132{
2133 struct v4l2_streamparm *p = arg;
2134 int ret = check_fmt(file, p->type);
2135
2136 if (ret)
2137 return ret;
2138
2139 /* Note: extendedmode is never used in drivers */
2140 if (V4L2_TYPE_IS_OUTPUT(p->type)) {
2141 memset(p->parm.output.reserved, 0,
2142 sizeof(p->parm.output.reserved));
2143 p->parm.output.extendedmode = 0;
2144 p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY;
2145 } else {
2146 memset(p->parm.capture.reserved, 0,
2147 sizeof(p->parm.capture.reserved));
2148 p->parm.capture.extendedmode = 0;
2149 p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY;
2150 }
2151 return ops->vidioc_s_parm(file, fh, p);
2152}
2153
2154static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,
2155 struct file *file, void *fh, void *arg)
2156{
2157 struct video_device *vfd = video_devdata(file);
2158 struct v4l2_queryctrl *p = arg;
2159 struct v4l2_fh *vfh =
2160 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2161
2162 if (vfh && vfh->ctrl_handler)
2163 return v4l2_queryctrl(vfh->ctrl_handler, p);
2164 if (vfd->ctrl_handler)
2165 return v4l2_queryctrl(vfd->ctrl_handler, p);
2166 if (ops->vidioc_queryctrl)
2167 return ops->vidioc_queryctrl(file, fh, p);
2168 return -ENOTTY;
2169}
2170
2171static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops,
2172 struct file *file, void *fh, void *arg)
2173{
2174 struct video_device *vfd = video_devdata(file);
2175 struct v4l2_query_ext_ctrl *p = arg;
2176 struct v4l2_fh *vfh =
2177 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2178
2179 if (vfh && vfh->ctrl_handler)
2180 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p);
2181 if (vfd->ctrl_handler)
2182 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p);
2183 if (ops->vidioc_query_ext_ctrl)
2184 return ops->vidioc_query_ext_ctrl(file, fh, p);
2185 return -ENOTTY;
2186}
2187
2188static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,
2189 struct file *file, void *fh, void *arg)
2190{
2191 struct video_device *vfd = video_devdata(file);
2192 struct v4l2_querymenu *p = arg;
2193 struct v4l2_fh *vfh =
2194 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2195
2196 if (vfh && vfh->ctrl_handler)
2197 return v4l2_querymenu(vfh->ctrl_handler, p);
2198 if (vfd->ctrl_handler)
2199 return v4l2_querymenu(vfd->ctrl_handler, p);
2200 if (ops->vidioc_querymenu)
2201 return ops->vidioc_querymenu(file, fh, p);
2202 return -ENOTTY;
2203}
2204
2205static int v4l_g_ctrl(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_control *p = arg;
2210 struct v4l2_fh *vfh =
2211 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2212 struct v4l2_ext_controls ctrls;
2213 struct v4l2_ext_control ctrl;
2214
2215 if (vfh && vfh->ctrl_handler)
2216 return v4l2_g_ctrl(vfh->ctrl_handler, p);
2217 if (vfd->ctrl_handler)
2218 return v4l2_g_ctrl(vfd->ctrl_handler, p);
2219 if (ops->vidioc_g_ctrl)
2220 return ops->vidioc_g_ctrl(file, fh, p);
2221 if (ops->vidioc_g_ext_ctrls == NULL)
2222 return -ENOTTY;
2223
2224 ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
2225 ctrls.count = 1;
2226 ctrls.controls = &ctrl;
2227 ctrl.id = p->id;
2228 ctrl.value = p->value;
2229 if (check_ext_ctrls(&ctrls, 1)) {
2230 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
2231
2232 if (ret == 0)
2233 p->value = ctrl.value;
2234 return ret;
2235 }
2236 return -EINVAL;
2237}
2238
2239static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,
2240 struct file *file, void *fh, void *arg)
2241{
2242 struct video_device *vfd = video_devdata(file);
2243 struct v4l2_control *p = arg;
2244 struct v4l2_fh *vfh =
2245 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2246 struct v4l2_ext_controls ctrls;
2247 struct v4l2_ext_control ctrl;
2248
2249 if (vfh && vfh->ctrl_handler)
2250 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
2251 if (vfd->ctrl_handler)
2252 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
2253 if (ops->vidioc_s_ctrl)
2254 return ops->vidioc_s_ctrl(file, fh, p);
2255 if (ops->vidioc_s_ext_ctrls == NULL)
2256 return -ENOTTY;
2257
2258 ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
2259 ctrls.count = 1;
2260 ctrls.controls = &ctrl;
2261 ctrl.id = p->id;
2262 ctrl.value = p->value;
2263 if (check_ext_ctrls(&ctrls, 1))
2264 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
2265 return -EINVAL;
2266}
2267
2268static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2269 struct file *file, void *fh, void *arg)
2270{
2271 struct video_device *vfd = video_devdata(file);
2272 struct v4l2_ext_controls *p = arg;
2273 struct v4l2_fh *vfh =
2274 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2275
2276 p->error_idx = p->count;
2277 if (vfh && vfh->ctrl_handler)
2278 return v4l2_g_ext_ctrls(vfh->ctrl_handler,
2279 vfd, vfd->v4l2_dev->mdev, p);
2280 if (vfd->ctrl_handler)
2281 return v4l2_g_ext_ctrls(vfd->ctrl_handler,
2282 vfd, vfd->v4l2_dev->mdev, p);
2283 if (ops->vidioc_g_ext_ctrls == NULL)
2284 return -ENOTTY;
2285 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :
2286 -EINVAL;
2287}
2288
2289static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2290 struct file *file, void *fh, void *arg)
2291{
2292 struct video_device *vfd = video_devdata(file);
2293 struct v4l2_ext_controls *p = arg;
2294 struct v4l2_fh *vfh =
2295 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2296
2297 p->error_idx = p->count;
2298 if (vfh && vfh->ctrl_handler)
2299 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler,
2300 vfd, vfd->v4l2_dev->mdev, p);
2301 if (vfd->ctrl_handler)
2302 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler,
2303 vfd, vfd->v4l2_dev->mdev, p);
2304 if (ops->vidioc_s_ext_ctrls == NULL)
2305 return -ENOTTY;
2306 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :
2307 -EINVAL;
2308}
2309
2310static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2311 struct file *file, void *fh, void *arg)
2312{
2313 struct video_device *vfd = video_devdata(file);
2314 struct v4l2_ext_controls *p = arg;
2315 struct v4l2_fh *vfh =
2316 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2317
2318 p->error_idx = p->count;
2319 if (vfh && vfh->ctrl_handler)
2320 return v4l2_try_ext_ctrls(vfh->ctrl_handler,
2321 vfd, vfd->v4l2_dev->mdev, p);
2322 if (vfd->ctrl_handler)
2323 return v4l2_try_ext_ctrls(vfd->ctrl_handler,
2324 vfd, vfd->v4l2_dev->mdev, p);
2325 if (ops->vidioc_try_ext_ctrls == NULL)
2326 return -ENOTTY;
2327 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :
2328 -EINVAL;
2329}
2330
2331/*
2332 * The selection API specified originally that the _MPLANE buffer types
2333 * shouldn't be used. The reasons for this are lost in the mists of time
2334 * (or just really crappy memories). Regardless, this is really annoying
2335 * for userspace. So to keep things simple we map _MPLANE buffer types
2336 * to their 'regular' counterparts before calling the driver. And we
2337 * restore it afterwards. This way applications can use either buffer
2338 * type and drivers don't need to check for both.
2339 */
2340static int v4l_g_selection(const struct v4l2_ioctl_ops *ops,
2341 struct file *file, void *fh, void *arg)
2342{
2343 struct v4l2_selection *p = arg;
2344 u32 old_type = p->type;
2345 int ret;
2346
2347 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2348 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2349 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2350 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2351 ret = ops->vidioc_g_selection(file, fh, p);
2352 p->type = old_type;
2353 return ret;
2354}
2355
2356static int v4l_s_selection(const struct v4l2_ioctl_ops *ops,
2357 struct file *file, void *fh, void *arg)
2358{
2359 struct v4l2_selection *p = arg;
2360 u32 old_type = p->type;
2361 int ret;
2362
2363 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2364 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2365 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2366 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2367 ret = ops->vidioc_s_selection(file, fh, p);
2368 p->type = old_type;
2369 return ret;
2370}
2371
2372static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
2373 struct file *file, void *fh, void *arg)
2374{
2375 struct video_device *vfd = video_devdata(file);
2376 struct v4l2_crop *p = arg;
2377 struct v4l2_selection s = {
2378 .type = p->type,
2379 };
2380 int ret;
2381
2382 /* simulate capture crop using selection api */
2383
2384 /* crop means compose for output devices */
2385 if (V4L2_TYPE_IS_OUTPUT(p->type))
2386 s.target = V4L2_SEL_TGT_COMPOSE;
2387 else
2388 s.target = V4L2_SEL_TGT_CROP;
2389
2390 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))
2391 s.target = s.target == V4L2_SEL_TGT_COMPOSE ?
2392 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE;
2393
2394 ret = v4l_g_selection(ops, file, fh, &s);
2395
2396 /* copying results to old structure on success */
2397 if (!ret)
2398 p->c = s.r;
2399 return ret;
2400}
2401
2402static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
2403 struct file *file, void *fh, void *arg)
2404{
2405 struct video_device *vfd = video_devdata(file);
2406 struct v4l2_crop *p = arg;
2407 struct v4l2_selection s = {
2408 .type = p->type,
2409 .r = p->c,
2410 };
2411
2412 /* simulate capture crop using selection api */
2413
2414 /* crop means compose for output devices */
2415 if (V4L2_TYPE_IS_OUTPUT(p->type))
2416 s.target = V4L2_SEL_TGT_COMPOSE;
2417 else
2418 s.target = V4L2_SEL_TGT_CROP;
2419
2420 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))
2421 s.target = s.target == V4L2_SEL_TGT_COMPOSE ?
2422 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE;
2423
2424 return v4l_s_selection(ops, file, fh, &s);
2425}
2426
2427static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
2428 struct file *file, void *fh, void *arg)
2429{
2430 struct video_device *vfd = video_devdata(file);
2431 struct v4l2_cropcap *p = arg;
2432 struct v4l2_selection s = { .type = p->type };
2433 int ret = 0;
2434
2435 /* setting trivial pixelaspect */
2436 p->pixelaspect.numerator = 1;
2437 p->pixelaspect.denominator = 1;
2438
2439 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2440 s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2441 else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2442 s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2443
2444 /*
2445 * The determine_valid_ioctls() call already should ensure
2446 * that this can never happen, but just in case...
2447 */
2448 if (WARN_ON(!ops->vidioc_g_selection))
2449 return -ENOTTY;
2450
2451 if (ops->vidioc_g_pixelaspect)
2452 ret = ops->vidioc_g_pixelaspect(file, fh, s.type,
2453 &p->pixelaspect);
2454
2455 /*
2456 * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the
2457 * square pixel aspect ratio in that case.
2458 */
2459 if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD)
2460 return ret;
2461
2462 /* Use g_selection() to fill in the bounds and defrect rectangles */
2463
2464 /* obtaining bounds */
2465 if (V4L2_TYPE_IS_OUTPUT(p->type))
2466 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
2467 else
2468 s.target = V4L2_SEL_TGT_CROP_BOUNDS;
2469
2470 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))
2471 s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ?
2472 V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS;
2473
2474 ret = v4l_g_selection(ops, file, fh, &s);
2475 if (ret)
2476 return ret;
2477 p->bounds = s.r;
2478
2479 /* obtaining defrect */
2480 if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS)
2481 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
2482 else
2483 s.target = V4L2_SEL_TGT_CROP_DEFAULT;
2484
2485 ret = v4l_g_selection(ops, file, fh, &s);
2486 if (ret)
2487 return ret;
2488 p->defrect = s.r;
2489
2490 return 0;
2491}
2492
2493static int v4l_log_status(const struct v4l2_ioctl_ops *ops,
2494 struct file *file, void *fh, void *arg)
2495{
2496 struct video_device *vfd = video_devdata(file);
2497 int ret;
2498
2499 if (vfd->v4l2_dev)
2500 pr_info("%s: ================= START STATUS =================\n",
2501 vfd->v4l2_dev->name);
2502 ret = ops->vidioc_log_status(file, fh);
2503 if (vfd->v4l2_dev)
2504 pr_info("%s: ================== END STATUS ==================\n",
2505 vfd->v4l2_dev->name);
2506 return ret;
2507}
2508
2509static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
2510 struct file *file, void *fh, void *arg)
2511{
2512#ifdef CONFIG_VIDEO_ADV_DEBUG
2513 struct v4l2_dbg_register *p = arg;
2514 struct video_device *vfd = video_devdata(file);
2515 struct v4l2_subdev *sd;
2516 int idx = 0;
2517
2518 if (!capable(CAP_SYS_ADMIN))
2519 return -EPERM;
2520 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2521 if (vfd->v4l2_dev == NULL)
2522 return -EINVAL;
2523 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2524 if (p->match.addr == idx++)
2525 return v4l2_subdev_call(sd, core, g_register, p);
2526 return -EINVAL;
2527 }
2528 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2529 (ops->vidioc_g_chip_info || p->match.addr == 0))
2530 return ops->vidioc_g_register(file, fh, p);
2531 return -EINVAL;
2532#else
2533 return -ENOTTY;
2534#endif
2535}
2536
2537static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
2538 struct file *file, void *fh, void *arg)
2539{
2540#ifdef CONFIG_VIDEO_ADV_DEBUG
2541 const struct v4l2_dbg_register *p = arg;
2542 struct video_device *vfd = video_devdata(file);
2543 struct v4l2_subdev *sd;
2544 int idx = 0;
2545
2546 if (!capable(CAP_SYS_ADMIN))
2547 return -EPERM;
2548 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2549 if (vfd->v4l2_dev == NULL)
2550 return -EINVAL;
2551 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2552 if (p->match.addr == idx++)
2553 return v4l2_subdev_call(sd, core, s_register, p);
2554 return -EINVAL;
2555 }
2556 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2557 (ops->vidioc_g_chip_info || p->match.addr == 0))
2558 return ops->vidioc_s_register(file, fh, p);
2559 return -EINVAL;
2560#else
2561 return -ENOTTY;
2562#endif
2563}
2564
2565static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,
2566 struct file *file, void *fh, void *arg)
2567{
2568#ifdef CONFIG_VIDEO_ADV_DEBUG
2569 struct video_device *vfd = video_devdata(file);
2570 struct v4l2_dbg_chip_info *p = arg;
2571 struct v4l2_subdev *sd;
2572 int idx = 0;
2573
2574 switch (p->match.type) {
2575 case V4L2_CHIP_MATCH_BRIDGE:
2576 if (ops->vidioc_s_register)
2577 p->flags |= V4L2_CHIP_FL_WRITABLE;
2578 if (ops->vidioc_g_register)
2579 p->flags |= V4L2_CHIP_FL_READABLE;
2580 strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));
2581 if (ops->vidioc_g_chip_info)
2582 return ops->vidioc_g_chip_info(file, fh, arg);
2583 if (p->match.addr)
2584 return -EINVAL;
2585 return 0;
2586
2587 case V4L2_CHIP_MATCH_SUBDEV:
2588 if (vfd->v4l2_dev == NULL)
2589 break;
2590 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {
2591 if (p->match.addr != idx++)
2592 continue;
2593 if (sd->ops->core && sd->ops->core->s_register)
2594 p->flags |= V4L2_CHIP_FL_WRITABLE;
2595 if (sd->ops->core && sd->ops->core->g_register)
2596 p->flags |= V4L2_CHIP_FL_READABLE;
2597 strscpy(p->name, sd->name, sizeof(p->name));
2598 return 0;
2599 }
2600 break;
2601 }
2602 return -EINVAL;
2603#else
2604 return -ENOTTY;
2605#endif
2606}
2607
2608static int v4l_dqevent(const struct v4l2_ioctl_ops *ops,
2609 struct file *file, void *fh, void *arg)
2610{
2611 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK);
2612}
2613
2614static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,
2615 struct file *file, void *fh, void *arg)
2616{
2617 return ops->vidioc_subscribe_event(fh, arg);
2618}
2619
2620static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,
2621 struct file *file, void *fh, void *arg)
2622{
2623 return ops->vidioc_unsubscribe_event(fh, arg);
2624}
2625
2626static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,
2627 struct file *file, void *fh, void *arg)
2628{
2629 struct v4l2_sliced_vbi_cap *p = arg;
2630 int ret = check_fmt(file, p->type);
2631
2632 if (ret)
2633 return ret;
2634
2635 /* Clear up to type, everything after type is zeroed already */
2636 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
2637
2638 return ops->vidioc_g_sliced_vbi_cap(file, fh, p);
2639}
2640
2641static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
2642 struct file *file, void *fh, void *arg)
2643{
2644 struct video_device *vfd = video_devdata(file);
2645 struct v4l2_frequency_band *p = arg;
2646 enum v4l2_tuner_type type;
2647 int err;
2648
2649 if (vfd->vfl_type == VFL_TYPE_SDR) {
2650 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)
2651 return -EINVAL;
2652 type = p->type;
2653 } else {
2654 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2655 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2656 if (type != p->type)
2657 return -EINVAL;
2658 }
2659 if (ops->vidioc_enum_freq_bands) {
2660 err = ops->vidioc_enum_freq_bands(file, fh, p);
2661 if (err != -ENOTTY)
2662 return err;
2663 }
2664 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) {
2665 struct v4l2_tuner t = {
2666 .index = p->tuner,
2667 .type = type,
2668 };
2669
2670 if (p->index)
2671 return -EINVAL;
2672 err = ops->vidioc_g_tuner(file, fh, &t);
2673 if (err)
2674 return err;
2675 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2676 p->rangelow = t.rangelow;
2677 p->rangehigh = t.rangehigh;
2678 p->modulation = (type == V4L2_TUNER_RADIO) ?
2679 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2680 return 0;
2681 }
2682 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) {
2683 struct v4l2_modulator m = {
2684 .index = p->tuner,
2685 };
2686
2687 if (type != V4L2_TUNER_RADIO)
2688 return -EINVAL;
2689 if (p->index)
2690 return -EINVAL;
2691 err = ops->vidioc_g_modulator(file, fh, &m);
2692 if (err)
2693 return err;
2694 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2695 p->rangelow = m.rangelow;
2696 p->rangehigh = m.rangehigh;
2697 p->modulation = (type == V4L2_TUNER_RADIO) ?
2698 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2699 return 0;
2700 }
2701 return -ENOTTY;
2702}
2703
2704struct v4l2_ioctl_info {
2705 unsigned int ioctl;
2706 u32 flags;
2707 const char * const name;
2708 int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file,
2709 void *fh, void *p);
2710 void (*debug)(const void *arg, bool write_only);
2711};
2712
2713/* This control needs a priority check */
2714#define INFO_FL_PRIO (1 << 0)
2715/* This control can be valid if the filehandle passes a control handler. */
2716#define INFO_FL_CTRL (1 << 1)
2717/* Queuing ioctl */
2718#define INFO_FL_QUEUE (1 << 2)
2719/* Always copy back result, even on error */
2720#define INFO_FL_ALWAYS_COPY (1 << 3)
2721/* Zero struct from after the field to the end */
2722#define INFO_FL_CLEAR(v4l2_struct, field) \
2723 ((offsetof(struct v4l2_struct, field) + \
2724 sizeof_field(struct v4l2_struct, field)) << 16)
2725#define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
2726
2727#define DEFINE_V4L_STUB_FUNC(_vidioc) \
2728 static int v4l_stub_ ## _vidioc( \
2729 const struct v4l2_ioctl_ops *ops, \
2730 struct file *file, void *fh, void *p) \
2731 { \
2732 return ops->vidioc_ ## _vidioc(file, fh, p); \
2733 }
2734
2735#define IOCTL_INFO(_ioctl, _func, _debug, _flags) \
2736 [_IOC_NR(_ioctl)] = { \
2737 .ioctl = _ioctl, \
2738 .flags = _flags, \
2739 .name = #_ioctl, \
2740 .func = _func, \
2741 .debug = _debug, \
2742 }
2743
2744DEFINE_V4L_STUB_FUNC(g_fbuf)
2745DEFINE_V4L_STUB_FUNC(s_fbuf)
2746DEFINE_V4L_STUB_FUNC(expbuf)
2747DEFINE_V4L_STUB_FUNC(g_std)
2748DEFINE_V4L_STUB_FUNC(g_audio)
2749DEFINE_V4L_STUB_FUNC(s_audio)
2750DEFINE_V4L_STUB_FUNC(g_edid)
2751DEFINE_V4L_STUB_FUNC(s_edid)
2752DEFINE_V4L_STUB_FUNC(g_audout)
2753DEFINE_V4L_STUB_FUNC(s_audout)
2754DEFINE_V4L_STUB_FUNC(g_jpegcomp)
2755DEFINE_V4L_STUB_FUNC(s_jpegcomp)
2756DEFINE_V4L_STUB_FUNC(enumaudio)
2757DEFINE_V4L_STUB_FUNC(enumaudout)
2758DEFINE_V4L_STUB_FUNC(enum_framesizes)
2759DEFINE_V4L_STUB_FUNC(enum_frameintervals)
2760DEFINE_V4L_STUB_FUNC(g_enc_index)
2761DEFINE_V4L_STUB_FUNC(encoder_cmd)
2762DEFINE_V4L_STUB_FUNC(try_encoder_cmd)
2763DEFINE_V4L_STUB_FUNC(decoder_cmd)
2764DEFINE_V4L_STUB_FUNC(try_decoder_cmd)
2765DEFINE_V4L_STUB_FUNC(s_dv_timings)
2766DEFINE_V4L_STUB_FUNC(g_dv_timings)
2767DEFINE_V4L_STUB_FUNC(enum_dv_timings)
2768DEFINE_V4L_STUB_FUNC(query_dv_timings)
2769DEFINE_V4L_STUB_FUNC(dv_timings_cap)
2770
2771static const struct v4l2_ioctl_info v4l2_ioctls[] = {
2772 IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
2773 IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, 0),
2774 IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0),
2775 IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
2776 IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2777 IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
2778 IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0),
2779 IOCTL_INFO(VIDIOC_S_FBUF, v4l_stub_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
2780 IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO),
2781 IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),
2782 IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)),
2783 IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),
2784 IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2785 IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2786 IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
2787 IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
2788 IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0),
2789 IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
2790 IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
2791 IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
2792 IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
2793 IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
2794 IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
2795 IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
2796 IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0),
2797 IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO),
2798 IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
2799 IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
2800 IOCTL_INFO(VIDIOC_G_INPUT, v4l_g_input, v4l_print_u32, 0),
2801 IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
2802 IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY),
2803 IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY),
2804 IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_g_output, v4l_print_u32, 0),
2805 IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
2806 IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
2807 IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0),
2808 IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO),
2809 IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
2810 IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
2811 IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
2812 IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
2813 IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
2814 IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
2815 IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
2816 IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)),
2817 IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)),
2818 IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0),
2819 IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
2820 IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
2821 IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
2822 IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
2823 IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
2824 IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
2825 IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
2826 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)),
2827 IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
2828 IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2829 IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL),
2830 IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2831 IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
2832 IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
2833 IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0),
2834 IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2835 IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2836 IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
2837 IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0),
2838 IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
2839 IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
2840 IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
2841 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)),
2842 IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0),
2843 IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
2844 IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
2845 IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
2846 IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2847 IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
2848 IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)),
2849 IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY),
2850 IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)),
2851 IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
2852 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)),
2853 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)),
2854};
2855#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
2856
2857static bool v4l2_is_known_ioctl(unsigned int cmd)
2858{
2859 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2860 return false;
2861 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
2862}
2863
2864static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev,
2865 struct v4l2_fh *vfh, unsigned int cmd,
2866 void *arg)
2867{
2868 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2869 return vdev->lock;
2870 if (vfh && vfh->m2m_ctx &&
2871 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) {
2872 if (vfh->m2m_ctx->q_lock)
2873 return vfh->m2m_ctx->q_lock;
2874 }
2875 if (vdev->queue && vdev->queue->lock &&
2876 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
2877 return vdev->queue->lock;
2878 return vdev->lock;
2879}
2880
2881/* Common ioctl debug function. This function can be used by
2882 external ioctl messages as well as internal V4L ioctl */
2883void v4l_printk_ioctl(const char *prefix, unsigned int cmd)
2884{
2885 const char *dir, *type;
2886
2887 if (prefix)
2888 printk(KERN_DEBUG "%s: ", prefix);
2889
2890 switch (_IOC_TYPE(cmd)) {
2891 case 'd':
2892 type = "v4l2_int";
2893 break;
2894 case 'V':
2895 if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
2896 type = "v4l2";
2897 break;
2898 }
2899 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
2900 return;
2901 default:
2902 type = "unknown";
2903 break;
2904 }
2905
2906 switch (_IOC_DIR(cmd)) {
2907 case _IOC_NONE: dir = "--"; break;
2908 case _IOC_READ: dir = "r-"; break;
2909 case _IOC_WRITE: dir = "-w"; break;
2910 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
2911 default: dir = "*ERR*"; break;
2912 }
2913 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
2914 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
2915}
2916EXPORT_SYMBOL(v4l_printk_ioctl);
2917
2918static long __video_do_ioctl(struct file *file,
2919 unsigned int cmd, void *arg)
2920{
2921 struct video_device *vfd = video_devdata(file);
2922 struct mutex *req_queue_lock = NULL;
2923 struct mutex *lock; /* ioctl serialization mutex */
2924 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
2925 bool write_only = false;
2926 struct v4l2_ioctl_info default_info;
2927 const struct v4l2_ioctl_info *info;
2928 void *fh = file->private_data;
2929 struct v4l2_fh *vfh = NULL;
2930 int dev_debug = vfd->dev_debug;
2931 long ret = -ENOTTY;
2932
2933 if (ops == NULL) {
2934 pr_warn("%s: has no ioctl_ops.\n",
2935 video_device_node_name(vfd));
2936 return ret;
2937 }
2938
2939 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
2940 vfh = file->private_data;
2941
2942 /*
2943 * We need to serialize streamon/off with queueing new requests.
2944 * These ioctls may trigger the cancellation of a streaming
2945 * operation, and that should not be mixed with queueing a new
2946 * request at the same time.
2947 */
2948 if (v4l2_device_supports_requests(vfd->v4l2_dev) &&
2949 (cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF)) {
2950 req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex;
2951
2952 if (mutex_lock_interruptible(req_queue_lock))
2953 return -ERESTARTSYS;
2954 }
2955
2956 lock = v4l2_ioctl_get_lock(vfd, vfh, cmd, arg);
2957
2958 if (lock && mutex_lock_interruptible(lock)) {
2959 if (req_queue_lock)
2960 mutex_unlock(req_queue_lock);
2961 return -ERESTARTSYS;
2962 }
2963
2964 if (!video_is_registered(vfd)) {
2965 ret = -ENODEV;
2966 goto unlock;
2967 }
2968
2969 if (v4l2_is_known_ioctl(cmd)) {
2970 info = &v4l2_ioctls[_IOC_NR(cmd)];
2971
2972 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) &&
2973 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
2974 goto done;
2975
2976 if (vfh && (info->flags & INFO_FL_PRIO)) {
2977 ret = v4l2_prio_check(vfd->prio, vfh->prio);
2978 if (ret)
2979 goto done;
2980 }
2981 } else {
2982 default_info.ioctl = cmd;
2983 default_info.flags = 0;
2984 default_info.debug = v4l_print_default;
2985 info = &default_info;
2986 }
2987
2988 write_only = _IOC_DIR(cmd) == _IOC_WRITE;
2989 if (info != &default_info) {
2990 ret = info->func(ops, file, fh, arg);
2991 } else if (!ops->vidioc_default) {
2992 ret = -ENOTTY;
2993 } else {
2994 ret = ops->vidioc_default(file, fh,
2995 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
2996 cmd, arg);
2997 }
2998
2999done:
3000 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) {
3001 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) &&
3002 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF))
3003 goto unlock;
3004
3005 v4l_printk_ioctl(video_device_node_name(vfd), cmd);
3006 if (ret < 0)
3007 pr_cont(": error %ld", ret);
3008 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG))
3009 pr_cont("\n");
3010 else if (_IOC_DIR(cmd) == _IOC_NONE)
3011 info->debug(arg, write_only);
3012 else {
3013 pr_cont(": ");
3014 info->debug(arg, write_only);
3015 }
3016 }
3017
3018unlock:
3019 if (lock)
3020 mutex_unlock(lock);
3021 if (req_queue_lock)
3022 mutex_unlock(req_queue_lock);
3023 return ret;
3024}
3025
3026static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
3027 void __user **user_ptr, void ***kernel_ptr)
3028{
3029 int ret = 0;
3030
3031 switch (cmd) {
3032 case VIDIOC_PREPARE_BUF:
3033 case VIDIOC_QUERYBUF:
3034 case VIDIOC_QBUF:
3035 case VIDIOC_DQBUF: {
3036 struct v4l2_buffer *buf = parg;
3037
3038 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
3039 if (buf->length > VIDEO_MAX_PLANES) {
3040 ret = -EINVAL;
3041 break;
3042 }
3043 *user_ptr = (void __user *)buf->m.planes;
3044 *kernel_ptr = (void **)&buf->m.planes;
3045 *array_size = sizeof(struct v4l2_plane) * buf->length;
3046 ret = 1;
3047 }
3048 break;
3049 }
3050
3051 case VIDIOC_G_EDID:
3052 case VIDIOC_S_EDID: {
3053 struct v4l2_edid *edid = parg;
3054
3055 if (edid->blocks) {
3056 if (edid->blocks > 256) {
3057 ret = -EINVAL;
3058 break;
3059 }
3060 *user_ptr = (void __user *)edid->edid;
3061 *kernel_ptr = (void **)&edid->edid;
3062 *array_size = edid->blocks * 128;
3063 ret = 1;
3064 }
3065 break;
3066 }
3067
3068 case VIDIOC_S_EXT_CTRLS:
3069 case VIDIOC_G_EXT_CTRLS:
3070 case VIDIOC_TRY_EXT_CTRLS: {
3071 struct v4l2_ext_controls *ctrls = parg;
3072
3073 if (ctrls->count != 0) {
3074 if (ctrls->count > V4L2_CID_MAX_CTRLS) {
3075 ret = -EINVAL;
3076 break;
3077 }
3078 *user_ptr = (void __user *)ctrls->controls;
3079 *kernel_ptr = (void **)&ctrls->controls;
3080 *array_size = sizeof(struct v4l2_ext_control)
3081 * ctrls->count;
3082 ret = 1;
3083 }
3084 break;
3085 }
3086 }
3087
3088 return ret;
3089}
3090
3091static unsigned int video_translate_cmd(unsigned int cmd)
3092{
3093 switch (cmd) {
3094#ifdef CONFIG_COMPAT_32BIT_TIME
3095 case VIDIOC_DQEVENT_TIME32:
3096 return VIDIOC_DQEVENT;
3097 case VIDIOC_QUERYBUF_TIME32:
3098 return VIDIOC_QUERYBUF;
3099 case VIDIOC_QBUF_TIME32:
3100 return VIDIOC_QBUF;
3101 case VIDIOC_DQBUF_TIME32:
3102 return VIDIOC_DQBUF;
3103 case VIDIOC_PREPARE_BUF_TIME32:
3104 return VIDIOC_PREPARE_BUF;
3105#endif
3106 }
3107
3108 return cmd;
3109}
3110
3111static int video_get_user(void __user *arg, void *parg, unsigned int cmd,
3112 bool *always_copy)
3113{
3114 unsigned int n = _IOC_SIZE(cmd);
3115
3116 if (!(_IOC_DIR(cmd) & _IOC_WRITE)) {
3117 /* read-only ioctl */
3118 memset(parg, 0, n);
3119 return 0;
3120 }
3121
3122 switch (cmd) {
3123#ifdef CONFIG_COMPAT_32BIT_TIME
3124 case VIDIOC_QUERYBUF_TIME32:
3125 case VIDIOC_QBUF_TIME32:
3126 case VIDIOC_DQBUF_TIME32:
3127 case VIDIOC_PREPARE_BUF_TIME32: {
3128 struct v4l2_buffer_time32 vb32;
3129 struct v4l2_buffer *vb = parg;
3130
3131 if (copy_from_user(&vb32, arg, sizeof(vb32)))
3132 return -EFAULT;
3133
3134 *vb = (struct v4l2_buffer) {
3135 .index = vb32.index,
3136 .type = vb32.type,
3137 .bytesused = vb32.bytesused,
3138 .flags = vb32.flags,
3139 .field = vb32.field,
3140 .timestamp.tv_sec = vb32.timestamp.tv_sec,
3141 .timestamp.tv_usec = vb32.timestamp.tv_usec,
3142 .timecode = vb32.timecode,
3143 .sequence = vb32.sequence,
3144 .memory = vb32.memory,
3145 .m.userptr = vb32.m.userptr,
3146 .length = vb32.length,
3147 .request_fd = vb32.request_fd,
3148 };
3149
3150 if (cmd == VIDIOC_QUERYBUF_TIME32)
3151 vb->request_fd = 0;
3152
3153 break;
3154 }
3155#endif
3156 default:
3157 /*
3158 * In some cases, only a few fields are used as input,
3159 * i.e. when the app sets "index" and then the driver
3160 * fills in the rest of the structure for the thing
3161 * with that index. We only need to copy up the first
3162 * non-input field.
3163 */
3164 if (v4l2_is_known_ioctl(cmd)) {
3165 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags;
3166
3167 if (flags & INFO_FL_CLEAR_MASK)
3168 n = (flags & INFO_FL_CLEAR_MASK) >> 16;
3169 *always_copy = flags & INFO_FL_ALWAYS_COPY;
3170 }
3171
3172 if (copy_from_user(parg, (void __user *)arg, n))
3173 return -EFAULT;
3174
3175 /* zero out anything we don't copy from userspace */
3176 if (n < _IOC_SIZE(cmd))
3177 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n);
3178 break;
3179 }
3180
3181 return 0;
3182}
3183
3184static int video_put_user(void __user *arg, void *parg, unsigned int cmd)
3185{
3186 if (!(_IOC_DIR(cmd) & _IOC_READ))
3187 return 0;
3188
3189 switch (cmd) {
3190#ifdef CONFIG_COMPAT_32BIT_TIME
3191 case VIDIOC_DQEVENT_TIME32: {
3192 struct v4l2_event *ev = parg;
3193 struct v4l2_event_time32 ev32;
3194
3195 memset(&ev32, 0, sizeof(ev32));
3196
3197 ev32.type = ev->type;
3198 ev32.pending = ev->pending;
3199 ev32.sequence = ev->sequence;
3200 ev32.timestamp.tv_sec = ev->timestamp.tv_sec;
3201 ev32.timestamp.tv_nsec = ev->timestamp.tv_nsec;
3202 ev32.id = ev->id;
3203
3204 memcpy(&ev32.u, &ev->u, sizeof(ev->u));
3205 memcpy(&ev32.reserved, &ev->reserved, sizeof(ev->reserved));
3206
3207 if (copy_to_user(arg, &ev32, sizeof(ev32)))
3208 return -EFAULT;
3209 break;
3210 }
3211 case VIDIOC_QUERYBUF_TIME32:
3212 case VIDIOC_QBUF_TIME32:
3213 case VIDIOC_DQBUF_TIME32:
3214 case VIDIOC_PREPARE_BUF_TIME32: {
3215 struct v4l2_buffer *vb = parg;
3216 struct v4l2_buffer_time32 vb32;
3217
3218 memset(&vb32, 0, sizeof(vb32));
3219
3220 vb32.index = vb->index;
3221 vb32.type = vb->type;
3222 vb32.bytesused = vb->bytesused;
3223 vb32.flags = vb->flags;
3224 vb32.field = vb->field;
3225 vb32.timestamp.tv_sec = vb->timestamp.tv_sec;
3226 vb32.timestamp.tv_usec = vb->timestamp.tv_usec;
3227 vb32.timecode = vb->timecode;
3228 vb32.sequence = vb->sequence;
3229 vb32.memory = vb->memory;
3230 vb32.m.userptr = vb->m.userptr;
3231 vb32.length = vb->length;
3232 vb32.request_fd = vb->request_fd;
3233
3234 if (copy_to_user(arg, &vb32, sizeof(vb32)))
3235 return -EFAULT;
3236 break;
3237 }
3238#endif
3239 default:
3240 /* Copy results into user buffer */
3241 if (copy_to_user(arg, parg, _IOC_SIZE(cmd)))
3242 return -EFAULT;
3243 break;
3244 }
3245
3246 return 0;
3247}
3248
3249long
3250video_usercopy(struct file *file, unsigned int orig_cmd, unsigned long arg,
3251 v4l2_kioctl func)
3252{
3253 char sbuf[128];
3254 void *mbuf = NULL;
3255 void *parg = (void *)arg;
3256 long err = -EINVAL;
3257 bool has_array_args;
3258 bool always_copy = false;
3259 size_t array_size = 0;
3260 void __user *user_ptr = NULL;
3261 void **kernel_ptr = NULL;
3262 unsigned int cmd = video_translate_cmd(orig_cmd);
3263 const size_t ioc_size = _IOC_SIZE(cmd);
3264
3265 /* Copy arguments into temp kernel buffer */
3266 if (_IOC_DIR(cmd) != _IOC_NONE) {
3267 if (ioc_size <= sizeof(sbuf)) {
3268 parg = sbuf;
3269 } else {
3270 /* too big to allocate from stack */
3271 mbuf = kvmalloc(ioc_size, GFP_KERNEL);
3272 if (NULL == mbuf)
3273 return -ENOMEM;
3274 parg = mbuf;
3275 }
3276
3277 err = video_get_user((void __user *)arg, parg, orig_cmd,
3278 &always_copy);
3279 if (err)
3280 goto out;
3281 }
3282
3283 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
3284 if (err < 0)
3285 goto out;
3286 has_array_args = err;
3287
3288 if (has_array_args) {
3289 /*
3290 * When adding new types of array args, make sure that the
3291 * parent argument to ioctl (which contains the pointer to the
3292 * array) fits into sbuf (so that mbuf will still remain
3293 * unused up to here).
3294 */
3295 mbuf = kvmalloc(array_size, GFP_KERNEL);
3296 err = -ENOMEM;
3297 if (NULL == mbuf)
3298 goto out_array_args;
3299 err = -EFAULT;
3300 if (copy_from_user(mbuf, user_ptr, array_size))
3301 goto out_array_args;
3302 *kernel_ptr = mbuf;
3303 }
3304
3305 /* Handles IOCTL */
3306 err = func(file, cmd, parg);
3307 if (err == -ENOTTY || err == -ENOIOCTLCMD) {
3308 err = -ENOTTY;
3309 goto out;
3310 }
3311
3312 if (err == 0) {
3313 if (cmd == VIDIOC_DQBUF)
3314 trace_v4l2_dqbuf(video_devdata(file)->minor, parg);
3315 else if (cmd == VIDIOC_QBUF)
3316 trace_v4l2_qbuf(video_devdata(file)->minor, parg);
3317 }
3318
3319 if (has_array_args) {
3320 *kernel_ptr = (void __force *)user_ptr;
3321 if (copy_to_user(user_ptr, mbuf, array_size))
3322 err = -EFAULT;
3323 goto out_array_args;
3324 }
3325 /*
3326 * Some ioctls can return an error, but still have valid
3327 * results that must be returned.
3328 */
3329 if (err < 0 && !always_copy)
3330 goto out;
3331
3332out_array_args:
3333 if (video_put_user((void __user *)arg, parg, orig_cmd))
3334 err = -EFAULT;
3335out:
3336 kvfree(mbuf);
3337 return err;
3338}
3339
3340long video_ioctl2(struct file *file,
3341 unsigned int cmd, unsigned long arg)
3342{
3343 return video_usercopy(file, cmd, arg, __video_do_ioctl);
3344}
3345EXPORT_SYMBOL(video_ioctl2);