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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/compat.h>
12#include <linux/mm.h>
13#include <linux/module.h>
14#include <linux/slab.h>
15#include <linux/types.h>
16#include <linux/kernel.h>
17#include <linux/version.h>
18
19#include <linux/v4l2-subdev.h>
20#include <linux/videodev2.h>
21
22#include <media/media-device.h> /* for media_set_bus_info() */
23#include <media/v4l2-common.h>
24#include <media/v4l2-ioctl.h>
25#include <media/v4l2-ctrls.h>
26#include <media/v4l2-fh.h>
27#include <media/v4l2-event.h>
28#include <media/v4l2-device.h>
29#include <media/videobuf2-v4l2.h>
30#include <media/v4l2-mc.h>
31#include <media/v4l2-mem2mem.h>
32
33#include <trace/events/v4l2.h>
34
35#define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls)
36
37struct std_descr {
38 v4l2_std_id std;
39 const char *descr;
40};
41
42static const struct std_descr standards[] = {
43 { V4L2_STD_NTSC, "NTSC" },
44 { V4L2_STD_NTSC_M, "NTSC-M" },
45 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" },
46 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" },
47 { V4L2_STD_NTSC_443, "NTSC-443" },
48 { V4L2_STD_PAL, "PAL" },
49 { V4L2_STD_PAL_BG, "PAL-BG" },
50 { V4L2_STD_PAL_B, "PAL-B" },
51 { V4L2_STD_PAL_B1, "PAL-B1" },
52 { V4L2_STD_PAL_G, "PAL-G" },
53 { V4L2_STD_PAL_H, "PAL-H" },
54 { V4L2_STD_PAL_I, "PAL-I" },
55 { V4L2_STD_PAL_DK, "PAL-DK" },
56 { V4L2_STD_PAL_D, "PAL-D" },
57 { V4L2_STD_PAL_D1, "PAL-D1" },
58 { V4L2_STD_PAL_K, "PAL-K" },
59 { V4L2_STD_PAL_M, "PAL-M" },
60 { V4L2_STD_PAL_N, "PAL-N" },
61 { V4L2_STD_PAL_Nc, "PAL-Nc" },
62 { V4L2_STD_PAL_60, "PAL-60" },
63 { V4L2_STD_SECAM, "SECAM" },
64 { V4L2_STD_SECAM_B, "SECAM-B" },
65 { V4L2_STD_SECAM_G, "SECAM-G" },
66 { V4L2_STD_SECAM_H, "SECAM-H" },
67 { V4L2_STD_SECAM_DK, "SECAM-DK" },
68 { V4L2_STD_SECAM_D, "SECAM-D" },
69 { V4L2_STD_SECAM_K, "SECAM-K" },
70 { V4L2_STD_SECAM_K1, "SECAM-K1" },
71 { V4L2_STD_SECAM_L, "SECAM-L" },
72 { V4L2_STD_SECAM_LC, "SECAM-Lc" },
73 { 0, "Unknown" }
74};
75
76/* video4linux standard ID conversion to standard name
77 */
78const char *v4l2_norm_to_name(v4l2_std_id id)
79{
80 u32 myid = id;
81 int i;
82
83 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
84 64 bit comparisons. So, on that architecture, with some gcc
85 variants, compilation fails. Currently, the max value is 30bit wide.
86 */
87 BUG_ON(myid != id);
88
89 for (i = 0; standards[i].std; i++)
90 if (myid == standards[i].std)
91 break;
92 return standards[i].descr;
93}
94EXPORT_SYMBOL(v4l2_norm_to_name);
95
96/* Returns frame period for the given standard */
97void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod)
98{
99 if (id & V4L2_STD_525_60) {
100 frameperiod->numerator = 1001;
101 frameperiod->denominator = 30000;
102 } else {
103 frameperiod->numerator = 1;
104 frameperiod->denominator = 25;
105 }
106}
107EXPORT_SYMBOL(v4l2_video_std_frame_period);
108
109/* Fill in the fields of a v4l2_standard structure according to the
110 'id' and 'transmission' parameters. Returns negative on error. */
111int v4l2_video_std_construct(struct v4l2_standard *vs,
112 int id, const char *name)
113{
114 vs->id = id;
115 v4l2_video_std_frame_period(id, &vs->frameperiod);
116 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625;
117 strscpy(vs->name, name, sizeof(vs->name));
118 return 0;
119}
120EXPORT_SYMBOL(v4l2_video_std_construct);
121
122/* Fill in the fields of a v4l2_standard structure according to the
123 * 'id' and 'vs->index' parameters. Returns negative on error. */
124int v4l_video_std_enumstd(struct v4l2_standard *vs, v4l2_std_id id)
125{
126 v4l2_std_id curr_id = 0;
127 unsigned int index = vs->index, i, j = 0;
128 const char *descr = "";
129
130 /* Return -ENODATA if the id for the current input
131 or output is 0, meaning that it doesn't support this API. */
132 if (id == 0)
133 return -ENODATA;
134
135 /* Return norm array in a canonical way */
136 for (i = 0; i <= index && id; i++) {
137 /* last std value in the standards array is 0, so this
138 while always ends there since (id & 0) == 0. */
139 while ((id & standards[j].std) != standards[j].std)
140 j++;
141 curr_id = standards[j].std;
142 descr = standards[j].descr;
143 j++;
144 if (curr_id == 0)
145 break;
146 if (curr_id != V4L2_STD_PAL &&
147 curr_id != V4L2_STD_SECAM &&
148 curr_id != V4L2_STD_NTSC)
149 id &= ~curr_id;
150 }
151 if (i <= index)
152 return -EINVAL;
153
154 v4l2_video_std_construct(vs, curr_id, descr);
155 return 0;
156}
157
158/* ----------------------------------------------------------------- */
159/* some arrays for pretty-printing debug messages of enum types */
160
161const char *v4l2_field_names[] = {
162 [V4L2_FIELD_ANY] = "any",
163 [V4L2_FIELD_NONE] = "none",
164 [V4L2_FIELD_TOP] = "top",
165 [V4L2_FIELD_BOTTOM] = "bottom",
166 [V4L2_FIELD_INTERLACED] = "interlaced",
167 [V4L2_FIELD_SEQ_TB] = "seq-tb",
168 [V4L2_FIELD_SEQ_BT] = "seq-bt",
169 [V4L2_FIELD_ALTERNATE] = "alternate",
170 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",
171 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",
172};
173EXPORT_SYMBOL(v4l2_field_names);
174
175const char *v4l2_type_names[] = {
176 [0] = "0",
177 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap",
178 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay",
179 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out",
180 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap",
181 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out",
182 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",
183 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out",
184 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay",
185 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane",
186 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane",
187 [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap",
188 [V4L2_BUF_TYPE_SDR_OUTPUT] = "sdr-out",
189 [V4L2_BUF_TYPE_META_CAPTURE] = "meta-cap",
190 [V4L2_BUF_TYPE_META_OUTPUT] = "meta-out",
191};
192EXPORT_SYMBOL(v4l2_type_names);
193
194static const char *v4l2_memory_names[] = {
195 [V4L2_MEMORY_MMAP] = "mmap",
196 [V4L2_MEMORY_USERPTR] = "userptr",
197 [V4L2_MEMORY_OVERLAY] = "overlay",
198 [V4L2_MEMORY_DMABUF] = "dmabuf",
199};
200
201#define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown")
202
203/* ------------------------------------------------------------------ */
204/* debug help functions */
205
206static void v4l_print_querycap(const void *arg, bool write_only)
207{
208 const struct v4l2_capability *p = arg;
209
210 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, capabilities=0x%08x, device_caps=0x%08x\n",
211 (int)sizeof(p->driver), p->driver,
212 (int)sizeof(p->card), p->card,
213 (int)sizeof(p->bus_info), p->bus_info,
214 p->version, p->capabilities, p->device_caps);
215}
216
217static void v4l_print_enuminput(const void *arg, bool write_only)
218{
219 const struct v4l2_input *p = arg;
220
221 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, std=0x%08Lx, status=0x%x, capabilities=0x%x\n",
222 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
223 p->tuner, (unsigned long long)p->std, p->status,
224 p->capabilities);
225}
226
227static void v4l_print_enumoutput(const void *arg, bool write_only)
228{
229 const struct v4l2_output *p = arg;
230
231 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, modulator=%u, std=0x%08Lx, capabilities=0x%x\n",
232 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
233 p->modulator, (unsigned long long)p->std, p->capabilities);
234}
235
236static void v4l_print_audio(const void *arg, bool write_only)
237{
238 const struct v4l2_audio *p = arg;
239
240 if (write_only)
241 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode);
242 else
243 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
244 p->index, (int)sizeof(p->name), p->name,
245 p->capability, p->mode);
246}
247
248static void v4l_print_audioout(const void *arg, bool write_only)
249{
250 const struct v4l2_audioout *p = arg;
251
252 if (write_only)
253 pr_cont("index=%u\n", p->index);
254 else
255 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
256 p->index, (int)sizeof(p->name), p->name,
257 p->capability, p->mode);
258}
259
260static void v4l_print_fmtdesc(const void *arg, bool write_only)
261{
262 const struct v4l2_fmtdesc *p = arg;
263
264 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%p4cc, mbus_code=0x%04x, description='%.*s'\n",
265 p->index, prt_names(p->type, v4l2_type_names),
266 p->flags, &p->pixelformat, p->mbus_code,
267 (int)sizeof(p->description), p->description);
268}
269
270static void v4l_print_format(const void *arg, bool write_only)
271{
272 const struct v4l2_format *p = arg;
273 const struct v4l2_pix_format *pix;
274 const struct v4l2_pix_format_mplane *mp;
275 const struct v4l2_vbi_format *vbi;
276 const struct v4l2_sliced_vbi_format *sliced;
277 const struct v4l2_window *win;
278 const struct v4l2_meta_format *meta;
279 u32 pixelformat;
280 u32 planes;
281 unsigned i;
282
283 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
284 switch (p->type) {
285 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
286 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
287 pix = &p->fmt.pix;
288 pr_cont(", width=%u, height=%u, pixelformat=%p4cc, field=%s, bytesperline=%u, sizeimage=%u, colorspace=%d, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",
289 pix->width, pix->height, &pix->pixelformat,
290 prt_names(pix->field, v4l2_field_names),
291 pix->bytesperline, pix->sizeimage,
292 pix->colorspace, pix->flags, pix->ycbcr_enc,
293 pix->quantization, pix->xfer_func);
294 break;
295 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
296 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
297 mp = &p->fmt.pix_mp;
298 pixelformat = mp->pixelformat;
299 pr_cont(", width=%u, height=%u, format=%p4cc, field=%s, colorspace=%d, num_planes=%u, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",
300 mp->width, mp->height, &pixelformat,
301 prt_names(mp->field, v4l2_field_names),
302 mp->colorspace, mp->num_planes, mp->flags,
303 mp->ycbcr_enc, mp->quantization, mp->xfer_func);
304 planes = min_t(u32, mp->num_planes, VIDEO_MAX_PLANES);
305 for (i = 0; i < planes; i++)
306 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i,
307 mp->plane_fmt[i].bytesperline,
308 mp->plane_fmt[i].sizeimage);
309 break;
310 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
311 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
312 win = &p->fmt.win;
313 pr_cont(", wxh=%dx%d, x,y=%d,%d, field=%s, chromakey=0x%08x, global_alpha=0x%02x\n",
314 win->w.width, win->w.height, win->w.left, win->w.top,
315 prt_names(win->field, v4l2_field_names),
316 win->chromakey, win->global_alpha);
317 break;
318 case V4L2_BUF_TYPE_VBI_CAPTURE:
319 case V4L2_BUF_TYPE_VBI_OUTPUT:
320 vbi = &p->fmt.vbi;
321 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%p4cc, start=%u,%u, count=%u,%u\n",
322 vbi->sampling_rate, vbi->offset,
323 vbi->samples_per_line, &vbi->sample_format,
324 vbi->start[0], vbi->start[1],
325 vbi->count[0], vbi->count[1]);
326 break;
327 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
328 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
329 sliced = &p->fmt.sliced;
330 pr_cont(", service_set=0x%08x, io_size=%d\n",
331 sliced->service_set, sliced->io_size);
332 for (i = 0; i < 24; i++)
333 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
334 sliced->service_lines[0][i],
335 sliced->service_lines[1][i]);
336 break;
337 case V4L2_BUF_TYPE_SDR_CAPTURE:
338 case V4L2_BUF_TYPE_SDR_OUTPUT:
339 pixelformat = p->fmt.sdr.pixelformat;
340 pr_cont(", pixelformat=%p4cc\n", &pixelformat);
341 break;
342 case V4L2_BUF_TYPE_META_CAPTURE:
343 case V4L2_BUF_TYPE_META_OUTPUT:
344 meta = &p->fmt.meta;
345 pixelformat = meta->dataformat;
346 pr_cont(", dataformat=%p4cc, buffersize=%u\n",
347 &pixelformat, meta->buffersize);
348 break;
349 }
350}
351
352static void v4l_print_framebuffer(const void *arg, bool write_only)
353{
354 const struct v4l2_framebuffer *p = arg;
355
356 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, height=%u, pixelformat=%p4cc, bytesperline=%u, sizeimage=%u, colorspace=%d\n",
357 p->capability, p->flags, p->base, p->fmt.width, p->fmt.height,
358 &p->fmt.pixelformat, p->fmt.bytesperline, p->fmt.sizeimage,
359 p->fmt.colorspace);
360}
361
362static void v4l_print_buftype(const void *arg, bool write_only)
363{
364 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names));
365}
366
367static void v4l_print_modulator(const void *arg, bool write_only)
368{
369 const struct v4l2_modulator *p = arg;
370
371 if (write_only)
372 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans);
373 else
374 pr_cont("index=%u, name=%.*s, capability=0x%x, rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
375 p->index, (int)sizeof(p->name), p->name, p->capability,
376 p->rangelow, p->rangehigh, p->txsubchans);
377}
378
379static void v4l_print_tuner(const void *arg, bool write_only)
380{
381 const struct v4l2_tuner *p = arg;
382
383 if (write_only)
384 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode);
385 else
386 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",
387 p->index, (int)sizeof(p->name), p->name, p->type,
388 p->capability, p->rangelow,
389 p->rangehigh, p->signal, p->afc,
390 p->rxsubchans, p->audmode);
391}
392
393static void v4l_print_frequency(const void *arg, bool write_only)
394{
395 const struct v4l2_frequency *p = arg;
396
397 pr_cont("tuner=%u, type=%u, frequency=%u\n",
398 p->tuner, p->type, p->frequency);
399}
400
401static void v4l_print_standard(const void *arg, bool write_only)
402{
403 const struct v4l2_standard *p = arg;
404
405 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, framelines=%u\n",
406 p->index,
407 (unsigned long long)p->id, (int)sizeof(p->name), p->name,
408 p->frameperiod.numerator,
409 p->frameperiod.denominator,
410 p->framelines);
411}
412
413static void v4l_print_std(const void *arg, bool write_only)
414{
415 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg);
416}
417
418static void v4l_print_hw_freq_seek(const void *arg, bool write_only)
419{
420 const struct v4l2_hw_freq_seek *p = arg;
421
422 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, rangelow=%u, rangehigh=%u\n",
423 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing,
424 p->rangelow, p->rangehigh);
425}
426
427static void v4l_print_requestbuffers(const void *arg, bool write_only)
428{
429 const struct v4l2_requestbuffers *p = arg;
430
431 pr_cont("count=%d, type=%s, memory=%s\n",
432 p->count,
433 prt_names(p->type, v4l2_type_names),
434 prt_names(p->memory, v4l2_memory_names));
435}
436
437static void v4l_print_buffer(const void *arg, bool write_only)
438{
439 const struct v4l2_buffer *p = arg;
440 const struct v4l2_timecode *tc = &p->timecode;
441 const struct v4l2_plane *plane;
442 int i;
443
444 pr_cont("%02d:%02d:%02d.%06ld index=%d, type=%s, request_fd=%d, flags=0x%08x, field=%s, sequence=%d, memory=%s",
445 (int)p->timestamp.tv_sec / 3600,
446 ((int)p->timestamp.tv_sec / 60) % 60,
447 ((int)p->timestamp.tv_sec % 60),
448 (long)p->timestamp.tv_usec,
449 p->index,
450 prt_names(p->type, v4l2_type_names), p->request_fd,
451 p->flags, prt_names(p->field, v4l2_field_names),
452 p->sequence, prt_names(p->memory, v4l2_memory_names));
453
454 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
455 pr_cont("\n");
456 for (i = 0; i < p->length; ++i) {
457 plane = &p->m.planes[i];
458 printk(KERN_DEBUG
459 "plane %d: bytesused=%d, data_offset=0x%08x, offset/userptr=0x%lx, length=%d\n",
460 i, plane->bytesused, plane->data_offset,
461 plane->m.userptr, plane->length);
462 }
463 } else {
464 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n",
465 p->bytesused, p->m.userptr, p->length);
466 }
467
468 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, flags=0x%08x, frames=%d, userbits=0x%08x\n",
469 tc->hours, tc->minutes, tc->seconds,
470 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
471}
472
473static void v4l_print_exportbuffer(const void *arg, bool write_only)
474{
475 const struct v4l2_exportbuffer *p = arg;
476
477 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n",
478 p->fd, prt_names(p->type, v4l2_type_names),
479 p->index, p->plane, p->flags);
480}
481
482static void v4l_print_create_buffers(const void *arg, bool write_only)
483{
484 const struct v4l2_create_buffers *p = arg;
485
486 pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, max num buffers=%u",
487 p->index, p->count, prt_names(p->memory, v4l2_memory_names),
488 p->capabilities, p->max_num_buffers);
489 v4l_print_format(&p->format, write_only);
490}
491
492static void v4l_print_streamparm(const void *arg, bool write_only)
493{
494 const struct v4l2_streamparm *p = arg;
495
496 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
497
498 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
499 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
500 const struct v4l2_captureparm *c = &p->parm.capture;
501
502 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, extendedmode=%d, readbuffers=%d\n",
503 c->capability, c->capturemode,
504 c->timeperframe.numerator, c->timeperframe.denominator,
505 c->extendedmode, c->readbuffers);
506 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
507 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
508 const struct v4l2_outputparm *c = &p->parm.output;
509
510 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, extendedmode=%d, writebuffers=%d\n",
511 c->capability, c->outputmode,
512 c->timeperframe.numerator, c->timeperframe.denominator,
513 c->extendedmode, c->writebuffers);
514 } else {
515 pr_cont("\n");
516 }
517}
518
519static void v4l_print_queryctrl(const void *arg, bool write_only)
520{
521 const struct v4l2_queryctrl *p = arg;
522
523 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, step=%d, default=%d, flags=0x%08x\n",
524 p->id, p->type, (int)sizeof(p->name), p->name,
525 p->minimum, p->maximum,
526 p->step, p->default_value, p->flags);
527}
528
529static void v4l_print_query_ext_ctrl(const void *arg, bool write_only)
530{
531 const struct v4l2_query_ext_ctrl *p = arg;
532
533 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",
534 p->id, p->type, (int)sizeof(p->name), p->name,
535 p->minimum, p->maximum,
536 p->step, p->default_value, p->flags,
537 p->elem_size, p->elems, p->nr_of_dims,
538 p->dims[0], p->dims[1], p->dims[2], p->dims[3]);
539}
540
541static void v4l_print_querymenu(const void *arg, bool write_only)
542{
543 const struct v4l2_querymenu *p = arg;
544
545 pr_cont("id=0x%x, index=%d\n", p->id, p->index);
546}
547
548static void v4l_print_control(const void *arg, bool write_only)
549{
550 const struct v4l2_control *p = arg;
551 const char *name = v4l2_ctrl_get_name(p->id);
552
553 if (name)
554 pr_cont("name=%s, ", name);
555 pr_cont("id=0x%x, value=%d\n", p->id, p->value);
556}
557
558static void v4l_print_ext_controls(const void *arg, bool write_only)
559{
560 const struct v4l2_ext_controls *p = arg;
561 int i;
562
563 pr_cont("which=0x%x, count=%d, error_idx=%d, request_fd=%d",
564 p->which, p->count, p->error_idx, p->request_fd);
565 for (i = 0; i < p->count; i++) {
566 unsigned int id = p->controls[i].id;
567 const char *name = v4l2_ctrl_get_name(id);
568
569 if (name)
570 pr_cont(", name=%s", name);
571 if (!p->controls[i].size)
572 pr_cont(", id/val=0x%x/0x%x", id, p->controls[i].value);
573 else
574 pr_cont(", id/size=0x%x/%u", id, p->controls[i].size);
575 }
576 pr_cont("\n");
577}
578
579static void v4l_print_cropcap(const void *arg, bool write_only)
580{
581 const struct v4l2_cropcap *p = arg;
582
583 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, defrect wxh=%dx%d, x,y=%d,%d, pixelaspect %d/%d\n",
584 prt_names(p->type, v4l2_type_names),
585 p->bounds.width, p->bounds.height,
586 p->bounds.left, p->bounds.top,
587 p->defrect.width, p->defrect.height,
588 p->defrect.left, p->defrect.top,
589 p->pixelaspect.numerator, p->pixelaspect.denominator);
590}
591
592static void v4l_print_crop(const void *arg, bool write_only)
593{
594 const struct v4l2_crop *p = arg;
595
596 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n",
597 prt_names(p->type, v4l2_type_names),
598 p->c.width, p->c.height,
599 p->c.left, p->c.top);
600}
601
602static void v4l_print_selection(const void *arg, bool write_only)
603{
604 const struct v4l2_selection *p = arg;
605
606 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n",
607 prt_names(p->type, v4l2_type_names),
608 p->target, p->flags,
609 p->r.width, p->r.height, p->r.left, p->r.top);
610}
611
612static void v4l_print_jpegcompression(const void *arg, bool write_only)
613{
614 const struct v4l2_jpegcompression *p = arg;
615
616 pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n",
617 p->quality, p->APPn, p->APP_len,
618 p->COM_len, p->jpeg_markers);
619}
620
621static void v4l_print_enc_idx(const void *arg, bool write_only)
622{
623 const struct v4l2_enc_idx *p = arg;
624
625 pr_cont("entries=%d, entries_cap=%d\n",
626 p->entries, p->entries_cap);
627}
628
629static void v4l_print_encoder_cmd(const void *arg, bool write_only)
630{
631 const struct v4l2_encoder_cmd *p = arg;
632
633 pr_cont("cmd=%d, flags=0x%x\n",
634 p->cmd, p->flags);
635}
636
637static void v4l_print_decoder_cmd(const void *arg, bool write_only)
638{
639 const struct v4l2_decoder_cmd *p = arg;
640
641 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags);
642
643 if (p->cmd == V4L2_DEC_CMD_START)
644 pr_info("speed=%d, format=%u\n",
645 p->start.speed, p->start.format);
646 else if (p->cmd == V4L2_DEC_CMD_STOP)
647 pr_info("pts=%llu\n", p->stop.pts);
648}
649
650static void v4l_print_dbg_chip_info(const void *arg, bool write_only)
651{
652 const struct v4l2_dbg_chip_info *p = arg;
653
654 pr_cont("type=%u, ", p->match.type);
655 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
656 pr_cont("name=%.*s, ",
657 (int)sizeof(p->match.name), p->match.name);
658 else
659 pr_cont("addr=%u, ", p->match.addr);
660 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name);
661}
662
663static void v4l_print_dbg_register(const void *arg, bool write_only)
664{
665 const struct v4l2_dbg_register *p = arg;
666
667 pr_cont("type=%u, ", p->match.type);
668 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
669 pr_cont("name=%.*s, ",
670 (int)sizeof(p->match.name), p->match.name);
671 else
672 pr_cont("addr=%u, ", p->match.addr);
673 pr_cont("reg=0x%llx, val=0x%llx\n",
674 p->reg, p->val);
675}
676
677static void v4l_print_dv_timings(const void *arg, bool write_only)
678{
679 const struct v4l2_dv_timings *p = arg;
680
681 switch (p->type) {
682 case V4L2_DV_BT_656_1120:
683 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",
684 p->bt.interlaced, p->bt.pixelclock,
685 p->bt.width, p->bt.height,
686 p->bt.polarities, p->bt.hfrontporch,
687 p->bt.hsync, p->bt.hbackporch,
688 p->bt.vfrontporch, p->bt.vsync,
689 p->bt.vbackporch, p->bt.il_vfrontporch,
690 p->bt.il_vsync, p->bt.il_vbackporch,
691 p->bt.standards, p->bt.flags);
692 break;
693 default:
694 pr_cont("type=%d\n", p->type);
695 break;
696 }
697}
698
699static void v4l_print_enum_dv_timings(const void *arg, bool write_only)
700{
701 const struct v4l2_enum_dv_timings *p = arg;
702
703 pr_cont("index=%u, ", p->index);
704 v4l_print_dv_timings(&p->timings, write_only);
705}
706
707static void v4l_print_dv_timings_cap(const void *arg, bool write_only)
708{
709 const struct v4l2_dv_timings_cap *p = arg;
710
711 switch (p->type) {
712 case V4L2_DV_BT_656_1120:
713 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
714 p->bt.min_width, p->bt.max_width,
715 p->bt.min_height, p->bt.max_height,
716 p->bt.min_pixelclock, p->bt.max_pixelclock,
717 p->bt.standards, p->bt.capabilities);
718 break;
719 default:
720 pr_cont("type=%u\n", p->type);
721 break;
722 }
723}
724
725static void v4l_print_frmsizeenum(const void *arg, bool write_only)
726{
727 const struct v4l2_frmsizeenum *p = arg;
728
729 pr_cont("index=%u, pixelformat=%p4cc, type=%u",
730 p->index, &p->pixel_format, p->type);
731 switch (p->type) {
732 case V4L2_FRMSIZE_TYPE_DISCRETE:
733 pr_cont(", wxh=%ux%u\n",
734 p->discrete.width, p->discrete.height);
735 break;
736 case V4L2_FRMSIZE_TYPE_STEPWISE:
737 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n",
738 p->stepwise.min_width,
739 p->stepwise.min_height,
740 p->stepwise.max_width,
741 p->stepwise.max_height,
742 p->stepwise.step_width,
743 p->stepwise.step_height);
744 break;
745 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
746 default:
747 pr_cont("\n");
748 break;
749 }
750}
751
752static void v4l_print_frmivalenum(const void *arg, bool write_only)
753{
754 const struct v4l2_frmivalenum *p = arg;
755
756 pr_cont("index=%u, pixelformat=%p4cc, wxh=%ux%u, type=%u",
757 p->index, &p->pixel_format, p->width, p->height, p->type);
758 switch (p->type) {
759 case V4L2_FRMIVAL_TYPE_DISCRETE:
760 pr_cont(", fps=%d/%d\n",
761 p->discrete.numerator,
762 p->discrete.denominator);
763 break;
764 case V4L2_FRMIVAL_TYPE_STEPWISE:
765 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n",
766 p->stepwise.min.numerator,
767 p->stepwise.min.denominator,
768 p->stepwise.max.numerator,
769 p->stepwise.max.denominator,
770 p->stepwise.step.numerator,
771 p->stepwise.step.denominator);
772 break;
773 case V4L2_FRMIVAL_TYPE_CONTINUOUS:
774 default:
775 pr_cont("\n");
776 break;
777 }
778}
779
780static void v4l_print_event(const void *arg, bool write_only)
781{
782 const struct v4l2_event *p = arg;
783 const struct v4l2_event_ctrl *c;
784
785 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%llu.%9.9llu\n",
786 p->type, p->pending, p->sequence, p->id,
787 p->timestamp.tv_sec, p->timestamp.tv_nsec);
788 switch (p->type) {
789 case V4L2_EVENT_VSYNC:
790 printk(KERN_DEBUG "field=%s\n",
791 prt_names(p->u.vsync.field, v4l2_field_names));
792 break;
793 case V4L2_EVENT_CTRL:
794 c = &p->u.ctrl;
795 printk(KERN_DEBUG "changes=0x%x, type=%u, ",
796 c->changes, c->type);
797 if (c->type == V4L2_CTRL_TYPE_INTEGER64)
798 pr_cont("value64=%lld, ", c->value64);
799 else
800 pr_cont("value=%d, ", c->value);
801 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n",
802 c->flags, c->minimum, c->maximum,
803 c->step, c->default_value);
804 break;
805 case V4L2_EVENT_FRAME_SYNC:
806 pr_cont("frame_sequence=%u\n",
807 p->u.frame_sync.frame_sequence);
808 break;
809 }
810}
811
812static void v4l_print_event_subscription(const void *arg, bool write_only)
813{
814 const struct v4l2_event_subscription *p = arg;
815
816 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
817 p->type, p->id, p->flags);
818}
819
820static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only)
821{
822 const struct v4l2_sliced_vbi_cap *p = arg;
823 int i;
824
825 pr_cont("type=%s, service_set=0x%08x\n",
826 prt_names(p->type, v4l2_type_names), p->service_set);
827 for (i = 0; i < 24; i++)
828 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
829 p->service_lines[0][i],
830 p->service_lines[1][i]);
831}
832
833static void v4l_print_freq_band(const void *arg, bool write_only)
834{
835 const struct v4l2_frequency_band *p = arg;
836
837 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n",
838 p->tuner, p->type, p->index,
839 p->capability, p->rangelow,
840 p->rangehigh, p->modulation);
841}
842
843static void v4l_print_edid(const void *arg, bool write_only)
844{
845 const struct v4l2_edid *p = arg;
846
847 pr_cont("pad=%u, start_block=%u, blocks=%u\n",
848 p->pad, p->start_block, p->blocks);
849}
850
851static void v4l_print_u32(const void *arg, bool write_only)
852{
853 pr_cont("value=%u\n", *(const u32 *)arg);
854}
855
856static void v4l_print_newline(const void *arg, bool write_only)
857{
858 pr_cont("\n");
859}
860
861static void v4l_print_default(const void *arg, bool write_only)
862{
863 pr_cont("driver-specific ioctl\n");
864}
865
866static bool check_ext_ctrls(struct v4l2_ext_controls *c, unsigned long ioctl)
867{
868 __u32 i;
869
870 /* zero the reserved fields */
871 c->reserved[0] = 0;
872 for (i = 0; i < c->count; i++)
873 c->controls[i].reserved2[0] = 0;
874
875 switch (c->which) {
876 case V4L2_CID_PRIVATE_BASE:
877 /*
878 * V4L2_CID_PRIVATE_BASE cannot be used as control class
879 * when using extended controls.
880 * Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
881 * is it allowed for backwards compatibility.
882 */
883 if (ioctl == VIDIOC_G_CTRL || ioctl == VIDIOC_S_CTRL)
884 return false;
885 break;
886 case V4L2_CTRL_WHICH_DEF_VAL:
887 /* Default value cannot be changed */
888 if (ioctl == VIDIOC_S_EXT_CTRLS ||
889 ioctl == VIDIOC_TRY_EXT_CTRLS) {
890 c->error_idx = c->count;
891 return false;
892 }
893 return true;
894 case V4L2_CTRL_WHICH_CUR_VAL:
895 return true;
896 case V4L2_CTRL_WHICH_REQUEST_VAL:
897 c->error_idx = c->count;
898 return false;
899 }
900
901 /* Check that all controls are from the same control class. */
902 for (i = 0; i < c->count; i++) {
903 if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) {
904 c->error_idx = ioctl == VIDIOC_TRY_EXT_CTRLS ? i :
905 c->count;
906 return false;
907 }
908 }
909 return true;
910}
911
912static int check_fmt(struct file *file, enum v4l2_buf_type type)
913{
914 const u32 vid_caps = V4L2_CAP_VIDEO_CAPTURE |
915 V4L2_CAP_VIDEO_CAPTURE_MPLANE |
916 V4L2_CAP_VIDEO_OUTPUT |
917 V4L2_CAP_VIDEO_OUTPUT_MPLANE |
918 V4L2_CAP_VIDEO_M2M | V4L2_CAP_VIDEO_M2M_MPLANE;
919 const u32 meta_caps = V4L2_CAP_META_CAPTURE |
920 V4L2_CAP_META_OUTPUT;
921 struct video_device *vfd = video_devdata(file);
922 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
923 bool is_vid = vfd->vfl_type == VFL_TYPE_VIDEO &&
924 (vfd->device_caps & vid_caps);
925 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI;
926 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
927 bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH;
928 bool is_meta = vfd->vfl_type == VFL_TYPE_VIDEO &&
929 (vfd->device_caps & meta_caps);
930 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
931 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
932
933 if (ops == NULL)
934 return -EINVAL;
935
936 switch (type) {
937 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
938 if ((is_vid || is_tch) && is_rx &&
939 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane))
940 return 0;
941 break;
942 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
943 if ((is_vid || is_tch) && is_rx && ops->vidioc_g_fmt_vid_cap_mplane)
944 return 0;
945 break;
946 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
947 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay)
948 return 0;
949 break;
950 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
951 if (is_vid && is_tx &&
952 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane))
953 return 0;
954 break;
955 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
956 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane)
957 return 0;
958 break;
959 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
960 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay)
961 return 0;
962 break;
963 case V4L2_BUF_TYPE_VBI_CAPTURE:
964 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap)
965 return 0;
966 break;
967 case V4L2_BUF_TYPE_VBI_OUTPUT:
968 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out)
969 return 0;
970 break;
971 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
972 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap)
973 return 0;
974 break;
975 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
976 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out)
977 return 0;
978 break;
979 case V4L2_BUF_TYPE_SDR_CAPTURE:
980 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap)
981 return 0;
982 break;
983 case V4L2_BUF_TYPE_SDR_OUTPUT:
984 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out)
985 return 0;
986 break;
987 case V4L2_BUF_TYPE_META_CAPTURE:
988 if (is_meta && is_rx && ops->vidioc_g_fmt_meta_cap)
989 return 0;
990 break;
991 case V4L2_BUF_TYPE_META_OUTPUT:
992 if (is_meta && is_tx && ops->vidioc_g_fmt_meta_out)
993 return 0;
994 break;
995 default:
996 break;
997 }
998 return -EINVAL;
999}
1000
1001static void v4l_sanitize_colorspace(u32 pixelformat, u32 *colorspace,
1002 u32 *encoding, u32 *quantization,
1003 u32 *xfer_func)
1004{
1005 bool is_hsv = pixelformat == V4L2_PIX_FMT_HSV24 ||
1006 pixelformat == V4L2_PIX_FMT_HSV32;
1007
1008 if (!v4l2_is_colorspace_valid(*colorspace)) {
1009 *colorspace = V4L2_COLORSPACE_DEFAULT;
1010 *encoding = V4L2_YCBCR_ENC_DEFAULT;
1011 *quantization = V4L2_QUANTIZATION_DEFAULT;
1012 *xfer_func = V4L2_XFER_FUNC_DEFAULT;
1013 }
1014
1015 if ((!is_hsv && !v4l2_is_ycbcr_enc_valid(*encoding)) ||
1016 (is_hsv && !v4l2_is_hsv_enc_valid(*encoding)))
1017 *encoding = V4L2_YCBCR_ENC_DEFAULT;
1018
1019 if (!v4l2_is_quant_valid(*quantization))
1020 *quantization = V4L2_QUANTIZATION_DEFAULT;
1021
1022 if (!v4l2_is_xfer_func_valid(*xfer_func))
1023 *xfer_func = V4L2_XFER_FUNC_DEFAULT;
1024}
1025
1026static void v4l_sanitize_format(struct v4l2_format *fmt)
1027{
1028 unsigned int offset;
1029
1030 /* Make sure num_planes is not bogus */
1031 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ||
1032 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
1033 fmt->fmt.pix_mp.num_planes = min_t(u32, fmt->fmt.pix_mp.num_planes,
1034 VIDEO_MAX_PLANES);
1035
1036 /*
1037 * The v4l2_pix_format structure has been extended with fields that were
1038 * not previously required to be set to zero by applications. The priv
1039 * field, when set to a magic value, indicates that the extended fields
1040 * are valid. Otherwise they will contain undefined values. To simplify
1041 * the API towards drivers zero the extended fields and set the priv
1042 * field to the magic value when the extended pixel format structure
1043 * isn't used by applications.
1044 */
1045 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1046 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1047 if (fmt->fmt.pix.priv != V4L2_PIX_FMT_PRIV_MAGIC) {
1048 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1049
1050 offset = offsetof(struct v4l2_pix_format, priv)
1051 + sizeof(fmt->fmt.pix.priv);
1052 memset(((void *)&fmt->fmt.pix) + offset, 0,
1053 sizeof(fmt->fmt.pix) - offset);
1054 }
1055 }
1056
1057 /* Replace invalid colorspace values with defaults. */
1058 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1059 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1060 v4l_sanitize_colorspace(fmt->fmt.pix.pixelformat,
1061 &fmt->fmt.pix.colorspace,
1062 &fmt->fmt.pix.ycbcr_enc,
1063 &fmt->fmt.pix.quantization,
1064 &fmt->fmt.pix.xfer_func);
1065 } else if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ||
1066 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
1067 u32 ycbcr_enc = fmt->fmt.pix_mp.ycbcr_enc;
1068 u32 quantization = fmt->fmt.pix_mp.quantization;
1069 u32 xfer_func = fmt->fmt.pix_mp.xfer_func;
1070
1071 v4l_sanitize_colorspace(fmt->fmt.pix_mp.pixelformat,
1072 &fmt->fmt.pix_mp.colorspace, &ycbcr_enc,
1073 &quantization, &xfer_func);
1074
1075 fmt->fmt.pix_mp.ycbcr_enc = ycbcr_enc;
1076 fmt->fmt.pix_mp.quantization = quantization;
1077 fmt->fmt.pix_mp.xfer_func = xfer_func;
1078 }
1079}
1080
1081static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
1082 struct file *file, void *fh, void *arg)
1083{
1084 struct v4l2_capability *cap = (struct v4l2_capability *)arg;
1085 struct video_device *vfd = video_devdata(file);
1086 int ret;
1087
1088 cap->version = LINUX_VERSION_CODE;
1089 cap->device_caps = vfd->device_caps;
1090 cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS;
1091
1092 media_set_bus_info(cap->bus_info, sizeof(cap->bus_info),
1093 vfd->dev_parent);
1094
1095 ret = ops->vidioc_querycap(file, fh, cap);
1096
1097 /*
1098 * Drivers must not change device_caps, so check for this and
1099 * warn if this happened.
1100 */
1101 WARN_ON(cap->device_caps != vfd->device_caps);
1102 /*
1103 * Check that capabilities is a superset of
1104 * vfd->device_caps | V4L2_CAP_DEVICE_CAPS
1105 */
1106 WARN_ON((cap->capabilities &
1107 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)) !=
1108 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS));
1109 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT;
1110 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT;
1111
1112 return ret;
1113}
1114
1115static int v4l_g_input(const struct v4l2_ioctl_ops *ops,
1116 struct file *file, void *fh, void *arg)
1117{
1118 struct video_device *vfd = video_devdata(file);
1119
1120 if (vfd->device_caps & V4L2_CAP_IO_MC) {
1121 *(int *)arg = 0;
1122 return 0;
1123 }
1124
1125 return ops->vidioc_g_input(file, fh, arg);
1126}
1127
1128static int v4l_g_output(const struct v4l2_ioctl_ops *ops,
1129 struct file *file, void *fh, void *arg)
1130{
1131 struct video_device *vfd = video_devdata(file);
1132
1133 if (vfd->device_caps & V4L2_CAP_IO_MC) {
1134 *(int *)arg = 0;
1135 return 0;
1136 }
1137
1138 return ops->vidioc_g_output(file, fh, arg);
1139}
1140
1141static int v4l_s_input(const struct v4l2_ioctl_ops *ops,
1142 struct file *file, void *fh, void *arg)
1143{
1144 struct video_device *vfd = video_devdata(file);
1145 int ret;
1146
1147 ret = v4l_enable_media_source(vfd);
1148 if (ret)
1149 return ret;
1150
1151 if (vfd->device_caps & V4L2_CAP_IO_MC)
1152 return *(int *)arg ? -EINVAL : 0;
1153
1154 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg);
1155}
1156
1157static int v4l_s_output(const struct v4l2_ioctl_ops *ops,
1158 struct file *file, void *fh, void *arg)
1159{
1160 struct video_device *vfd = video_devdata(file);
1161
1162 if (vfd->device_caps & V4L2_CAP_IO_MC)
1163 return *(int *)arg ? -EINVAL : 0;
1164
1165 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg);
1166}
1167
1168static int v4l_g_priority(const struct v4l2_ioctl_ops *ops,
1169 struct file *file, void *fh, void *arg)
1170{
1171 struct video_device *vfd;
1172 u32 *p = arg;
1173
1174 vfd = video_devdata(file);
1175 *p = v4l2_prio_max(vfd->prio);
1176 return 0;
1177}
1178
1179static int v4l_s_priority(const struct v4l2_ioctl_ops *ops,
1180 struct file *file, void *fh, void *arg)
1181{
1182 struct video_device *vfd;
1183 struct v4l2_fh *vfh;
1184 u32 *p = arg;
1185
1186 vfd = video_devdata(file);
1187 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
1188 return -ENOTTY;
1189 vfh = file->private_data;
1190 return v4l2_prio_change(vfd->prio, &vfh->prio, *p);
1191}
1192
1193static int v4l_enuminput(const struct v4l2_ioctl_ops *ops,
1194 struct file *file, void *fh, void *arg)
1195{
1196 struct video_device *vfd = video_devdata(file);
1197 struct v4l2_input *p = arg;
1198
1199 /*
1200 * We set the flags for CAP_DV_TIMINGS &
1201 * CAP_STD here based on ioctl handler provided by the
1202 * driver. If the driver doesn't support these
1203 * for a specific input, it must override these flags.
1204 */
1205 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1206 p->capabilities |= V4L2_IN_CAP_STD;
1207
1208 if (vfd->device_caps & V4L2_CAP_IO_MC) {
1209 if (p->index)
1210 return -EINVAL;
1211 strscpy(p->name, vfd->name, sizeof(p->name));
1212 p->type = V4L2_INPUT_TYPE_CAMERA;
1213 return 0;
1214 }
1215
1216 return ops->vidioc_enum_input(file, fh, p);
1217}
1218
1219static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops,
1220 struct file *file, void *fh, void *arg)
1221{
1222 struct video_device *vfd = video_devdata(file);
1223 struct v4l2_output *p = arg;
1224
1225 /*
1226 * We set the flags for CAP_DV_TIMINGS &
1227 * CAP_STD here based on ioctl handler provided by the
1228 * driver. If the driver doesn't support these
1229 * for a specific output, it must override these flags.
1230 */
1231 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1232 p->capabilities |= V4L2_OUT_CAP_STD;
1233
1234 if (vfd->device_caps & V4L2_CAP_IO_MC) {
1235 if (p->index)
1236 return -EINVAL;
1237 strscpy(p->name, vfd->name, sizeof(p->name));
1238 p->type = V4L2_OUTPUT_TYPE_ANALOG;
1239 return 0;
1240 }
1241
1242 return ops->vidioc_enum_output(file, fh, p);
1243}
1244
1245static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
1246{
1247 const unsigned sz = sizeof(fmt->description);
1248 const char *descr = NULL;
1249 u32 flags = 0;
1250
1251 /*
1252 * We depart from the normal coding style here since the descriptions
1253 * should be aligned so it is easy to see which descriptions will be
1254 * longer than 31 characters (the max length for a description).
1255 * And frankly, this is easier to read anyway.
1256 *
1257 * Note that gcc will use O(log N) comparisons to find the right case.
1258 */
1259 switch (fmt->pixelformat) {
1260 /* Max description length mask: descr = "0123456789012345678901234567890" */
1261 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break;
1262 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break;
1263 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break;
1264 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break;
1265 case V4L2_PIX_FMT_RGBA444: descr = "16-bit RGBA 4-4-4-4"; break;
1266 case V4L2_PIX_FMT_RGBX444: descr = "16-bit RGBX 4-4-4-4"; break;
1267 case V4L2_PIX_FMT_ABGR444: descr = "16-bit ABGR 4-4-4-4"; break;
1268 case V4L2_PIX_FMT_XBGR444: descr = "16-bit XBGR 4-4-4-4"; break;
1269 case V4L2_PIX_FMT_BGRA444: descr = "16-bit BGRA 4-4-4-4"; break;
1270 case V4L2_PIX_FMT_BGRX444: descr = "16-bit BGRX 4-4-4-4"; break;
1271 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break;
1272 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break;
1273 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break;
1274 case V4L2_PIX_FMT_ABGR555: descr = "16-bit ABGR 1-5-5-5"; break;
1275 case V4L2_PIX_FMT_XBGR555: descr = "16-bit XBGR 1-5-5-5"; break;
1276 case V4L2_PIX_FMT_RGBA555: descr = "16-bit RGBA 5-5-5-1"; break;
1277 case V4L2_PIX_FMT_RGBX555: descr = "16-bit RGBX 5-5-5-1"; break;
1278 case V4L2_PIX_FMT_BGRA555: descr = "16-bit BGRA 5-5-5-1"; break;
1279 case V4L2_PIX_FMT_BGRX555: descr = "16-bit BGRX 5-5-5-1"; break;
1280 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break;
1281 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break;
1282 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break;
1283 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break;
1284 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break;
1285 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break;
1286 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break;
1287 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break;
1288 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break;
1289 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break;
1290 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break;
1291 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break;
1292 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break;
1293 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break;
1294 case V4L2_PIX_FMT_BGRA32: descr = "32-bit ABGR 8-8-8-8"; break;
1295 case V4L2_PIX_FMT_BGRX32: descr = "32-bit XBGR 8-8-8-8"; break;
1296 case V4L2_PIX_FMT_RGBA32: descr = "32-bit RGBA 8-8-8-8"; break;
1297 case V4L2_PIX_FMT_RGBX32: descr = "32-bit RGBX 8-8-8-8"; break;
1298 case V4L2_PIX_FMT_RGBX1010102: descr = "32-bit RGBX 10-10-10-2"; break;
1299 case V4L2_PIX_FMT_RGBA1010102: descr = "32-bit RGBA 10-10-10-2"; break;
1300 case V4L2_PIX_FMT_ARGB2101010: descr = "32-bit ARGB 2-10-10-10"; break;
1301 case V4L2_PIX_FMT_BGR48_12: descr = "12-bit Depth BGR"; break;
1302 case V4L2_PIX_FMT_ABGR64_12: descr = "12-bit Depth BGRA"; break;
1303 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break;
1304 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break;
1305 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break;
1306 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break;
1307 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break;
1308 case V4L2_PIX_FMT_Y012: descr = "12-bit Greyscale (bits 15-4)"; break;
1309 case V4L2_PIX_FMT_Y14: descr = "14-bit Greyscale"; break;
1310 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break;
1311 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break;
1312 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break;
1313 case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break;
1314 case V4L2_PIX_FMT_IPU3_Y10: descr = "10-bit greyscale (IPU3 Packed)"; break;
1315 case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break;
1316 case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break;
1317 case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break;
1318 case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break;
1319 case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break;
1320 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break;
1321 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break;
1322 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break;
1323 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break;
1324 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break;
1325 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break;
1326 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break;
1327 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break;
1328 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break;
1329 case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break;
1330 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break;
1331 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break;
1332 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break;
1333 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break;
1334 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break;
1335 case V4L2_PIX_FMT_YUV24: descr = "24-bit YUV 4:4:4 8-8-8"; break;
1336 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break;
1337 case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break;
1338 case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break;
1339 case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break;
1340 case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break;
1341 case V4L2_PIX_FMT_YUVA32: descr = "32-bit YUVA 8-8-8-8"; break;
1342 case V4L2_PIX_FMT_YUVX32: descr = "32-bit YUVX 8-8-8-8"; break;
1343 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break;
1344 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break;
1345 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break;
1346 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break;
1347 case V4L2_PIX_FMT_YUV48_12: descr = "12-bit YUV 4:4:4 Packed"; break;
1348 case V4L2_PIX_FMT_NV12: descr = "Y/UV 4:2:0"; break;
1349 case V4L2_PIX_FMT_NV21: descr = "Y/VU 4:2:0"; break;
1350 case V4L2_PIX_FMT_NV16: descr = "Y/UV 4:2:2"; break;
1351 case V4L2_PIX_FMT_NV61: descr = "Y/VU 4:2:2"; break;
1352 case V4L2_PIX_FMT_NV24: descr = "Y/UV 4:4:4"; break;
1353 case V4L2_PIX_FMT_NV42: descr = "Y/VU 4:4:4"; break;
1354 case V4L2_PIX_FMT_P010: descr = "10-bit Y/UV 4:2:0"; break;
1355 case V4L2_PIX_FMT_P012: descr = "12-bit Y/UV 4:2:0"; break;
1356 case V4L2_PIX_FMT_NV12_4L4: descr = "Y/UV 4:2:0 (4x4 Linear)"; break;
1357 case V4L2_PIX_FMT_NV12_16L16: descr = "Y/UV 4:2:0 (16x16 Linear)"; break;
1358 case V4L2_PIX_FMT_NV12_32L32: descr = "Y/UV 4:2:0 (32x32 Linear)"; break;
1359 case V4L2_PIX_FMT_NV15_4L4: descr = "10-bit Y/UV 4:2:0 (4x4 Linear)"; break;
1360 case V4L2_PIX_FMT_P010_4L4: descr = "10-bit Y/UV 4:2:0 (4x4 Linear)"; break;
1361 case V4L2_PIX_FMT_NV12M: descr = "Y/UV 4:2:0 (N-C)"; break;
1362 case V4L2_PIX_FMT_NV21M: descr = "Y/VU 4:2:0 (N-C)"; break;
1363 case V4L2_PIX_FMT_NV16M: descr = "Y/UV 4:2:2 (N-C)"; break;
1364 case V4L2_PIX_FMT_NV61M: descr = "Y/VU 4:2:2 (N-C)"; break;
1365 case V4L2_PIX_FMT_NV12MT: descr = "Y/UV 4:2:0 (64x32 MB, N-C)"; break;
1366 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/UV 4:2:0 (16x16 MB, N-C)"; break;
1367 case V4L2_PIX_FMT_P012M: descr = "12-bit Y/UV 4:2:0 (N-C)"; break;
1368 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break;
1369 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break;
1370 case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break;
1371 case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break;
1372 case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break;
1373 case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break;
1374 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break;
1375 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break;
1376 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break;
1377 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break;
1378 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break;
1379 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break;
1380 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break;
1381 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break;
1382 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break;
1383 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break;
1384 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break;
1385 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break;
1386 case V4L2_PIX_FMT_IPU3_SBGGR10: descr = "10-bit bayer BGGR IPU3 Packed"; break;
1387 case V4L2_PIX_FMT_IPU3_SGBRG10: descr = "10-bit bayer GBRG IPU3 Packed"; break;
1388 case V4L2_PIX_FMT_IPU3_SGRBG10: descr = "10-bit bayer GRBG IPU3 Packed"; break;
1389 case V4L2_PIX_FMT_IPU3_SRGGB10: descr = "10-bit bayer RGGB IPU3 Packed"; break;
1390 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break;
1391 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break;
1392 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break;
1393 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break;
1394 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break;
1395 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break;
1396 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break;
1397 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break;
1398 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break;
1399 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break;
1400 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break;
1401 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break;
1402 case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break;
1403 case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break;
1404 case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break;
1405 case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break;
1406 case V4L2_PIX_FMT_SBGGR14: descr = "14-bit Bayer BGBG/GRGR"; break;
1407 case V4L2_PIX_FMT_SGBRG14: descr = "14-bit Bayer GBGB/RGRG"; break;
1408 case V4L2_PIX_FMT_SGRBG14: descr = "14-bit Bayer GRGR/BGBG"; break;
1409 case V4L2_PIX_FMT_SRGGB14: descr = "14-bit Bayer RGRG/GBGB"; break;
1410 case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break;
1411 case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break;
1412 case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break;
1413 case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break;
1414 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break;
1415 case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break;
1416 case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break;
1417 case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break;
1418 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break;
1419 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break;
1420 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break;
1421 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break;
1422 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break;
1423 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break;
1424 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break;
1425 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break;
1426 case V4L2_PIX_FMT_MM21: descr = "Mediatek 8-bit Block Format"; break;
1427 case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break;
1428 case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break;
1429 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break;
1430 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break;
1431 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break;
1432 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break;
1433 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break;
1434 case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break;
1435 case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break;
1436 case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break;
1437 case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit Signed Deltas"; break;
1438 case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit Signed Deltas"; break;
1439 case V4L2_TCH_FMT_TU16: descr = "16-bit Unsigned Touch Data"; break;
1440 case V4L2_TCH_FMT_TU08: descr = "8-bit Unsigned Touch Data"; break;
1441 case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break;
1442 case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break;
1443 case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break;
1444 case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break;
1445 case V4L2_META_FMT_VIVID: descr = "Vivid Metadata"; break;
1446 case V4L2_META_FMT_RK_ISP1_PARAMS: descr = "Rockchip ISP1 3A Parameters"; break;
1447 case V4L2_META_FMT_RK_ISP1_STAT_3A: descr = "Rockchip ISP1 3A Statistics"; break;
1448 case V4L2_PIX_FMT_NV12_8L128: descr = "NV12 (8x128 Linear)"; break;
1449 case V4L2_PIX_FMT_NV12M_8L128: descr = "NV12M (8x128 Linear)"; break;
1450 case V4L2_PIX_FMT_NV12_10BE_8L128: descr = "10-bit NV12 (8x128 Linear, BE)"; break;
1451 case V4L2_PIX_FMT_NV12M_10BE_8L128: descr = "10-bit NV12M (8x128 Linear, BE)"; break;
1452 case V4L2_PIX_FMT_Y210: descr = "10-bit YUYV Packed"; break;
1453 case V4L2_PIX_FMT_Y212: descr = "12-bit YUYV Packed"; break;
1454 case V4L2_PIX_FMT_Y216: descr = "16-bit YUYV Packed"; break;
1455
1456 default:
1457 /* Compressed formats */
1458 flags = V4L2_FMT_FLAG_COMPRESSED;
1459 switch (fmt->pixelformat) {
1460 /* Max description length mask: descr = "0123456789012345678901234567890" */
1461 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break;
1462 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break;
1463 case V4L2_PIX_FMT_DV: descr = "1394"; break;
1464 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break;
1465 case V4L2_PIX_FMT_H264: descr = "H.264"; break;
1466 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break;
1467 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break;
1468 case V4L2_PIX_FMT_H264_SLICE: descr = "H.264 Parsed Slice Data"; break;
1469 case V4L2_PIX_FMT_H263: descr = "H.263"; break;
1470 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break;
1471 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break;
1472 case V4L2_PIX_FMT_MPEG2_SLICE: descr = "MPEG-2 Parsed Slice Data"; break;
1473 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 Part 2 ES"; break;
1474 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break;
1475 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break;
1476 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break;
1477 case V4L2_PIX_FMT_VP8: descr = "VP8"; break;
1478 case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break;
1479 case V4L2_PIX_FMT_VP9: descr = "VP9"; break;
1480 case V4L2_PIX_FMT_VP9_FRAME: descr = "VP9 Frame"; break;
1481 case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */
1482 case V4L2_PIX_FMT_HEVC_SLICE: descr = "HEVC Parsed Slice Data"; break;
1483 case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */
1484 case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */
1485 case V4L2_PIX_FMT_SPK: descr = "Sorenson Spark"; break;
1486 case V4L2_PIX_FMT_RV30: descr = "RealVideo 8"; break;
1487 case V4L2_PIX_FMT_RV40: descr = "RealVideo 9 & 10"; break;
1488 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break;
1489 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break;
1490 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break;
1491 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break;
1492 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break;
1493 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break;
1494 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break;
1495 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break;
1496 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break;
1497 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break;
1498 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break;
1499 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break;
1500 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break;
1501 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break;
1502 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break;
1503 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break;
1504 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break;
1505 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break;
1506 case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break;
1507 case V4L2_PIX_FMT_QC08C: descr = "QCOM Compressed 8-bit Format"; break;
1508 case V4L2_PIX_FMT_QC10C: descr = "QCOM Compressed 10-bit Format"; break;
1509 case V4L2_PIX_FMT_AJPG: descr = "Aspeed JPEG"; break;
1510 case V4L2_PIX_FMT_AV1_FRAME: descr = "AV1 Frame"; break;
1511 case V4L2_PIX_FMT_MT2110T: descr = "Mediatek 10bit Tile Mode"; break;
1512 case V4L2_PIX_FMT_MT2110R: descr = "Mediatek 10bit Raster Mode"; break;
1513 case V4L2_PIX_FMT_HEXTILE: descr = "Hextile Compressed Format"; break;
1514 default:
1515 if (fmt->description[0])
1516 return;
1517 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat);
1518 flags = 0;
1519 snprintf(fmt->description, sz, "%p4cc",
1520 &fmt->pixelformat);
1521 break;
1522 }
1523 }
1524
1525 if (descr)
1526 WARN_ON(strscpy(fmt->description, descr, sz) < 0);
1527 fmt->flags |= flags;
1528}
1529
1530static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
1531 struct file *file, void *fh, void *arg)
1532{
1533 struct video_device *vdev = video_devdata(file);
1534 struct v4l2_fmtdesc *p = arg;
1535 int ret = check_fmt(file, p->type);
1536 u32 mbus_code;
1537 u32 cap_mask;
1538
1539 if (ret)
1540 return ret;
1541 ret = -EINVAL;
1542
1543 if (!(vdev->device_caps & V4L2_CAP_IO_MC))
1544 p->mbus_code = 0;
1545
1546 mbus_code = p->mbus_code;
1547 memset_after(p, 0, type);
1548 p->mbus_code = mbus_code;
1549
1550 switch (p->type) {
1551 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1552 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1553 cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE |
1554 V4L2_CAP_VIDEO_M2M_MPLANE;
1555 if (!!(vdev->device_caps & cap_mask) !=
1556 (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE))
1557 break;
1558
1559 if (unlikely(!ops->vidioc_enum_fmt_vid_cap))
1560 break;
1561 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
1562 break;
1563 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1564 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay))
1565 break;
1566 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
1567 break;
1568 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1569 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1570 cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE |
1571 V4L2_CAP_VIDEO_M2M_MPLANE;
1572 if (!!(vdev->device_caps & cap_mask) !=
1573 (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE))
1574 break;
1575
1576 if (unlikely(!ops->vidioc_enum_fmt_vid_out))
1577 break;
1578 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg);
1579 break;
1580 case V4L2_BUF_TYPE_SDR_CAPTURE:
1581 if (unlikely(!ops->vidioc_enum_fmt_sdr_cap))
1582 break;
1583 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg);
1584 break;
1585 case V4L2_BUF_TYPE_SDR_OUTPUT:
1586 if (unlikely(!ops->vidioc_enum_fmt_sdr_out))
1587 break;
1588 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg);
1589 break;
1590 case V4L2_BUF_TYPE_META_CAPTURE:
1591 if (unlikely(!ops->vidioc_enum_fmt_meta_cap))
1592 break;
1593 ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg);
1594 break;
1595 case V4L2_BUF_TYPE_META_OUTPUT:
1596 if (unlikely(!ops->vidioc_enum_fmt_meta_out))
1597 break;
1598 ret = ops->vidioc_enum_fmt_meta_out(file, fh, arg);
1599 break;
1600 }
1601 if (ret == 0)
1602 v4l_fill_fmtdesc(p);
1603 return ret;
1604}
1605
1606static void v4l_pix_format_touch(struct v4l2_pix_format *p)
1607{
1608 /*
1609 * The v4l2_pix_format structure contains fields that make no sense for
1610 * touch. Set them to default values in this case.
1611 */
1612
1613 p->field = V4L2_FIELD_NONE;
1614 p->colorspace = V4L2_COLORSPACE_RAW;
1615 p->flags = 0;
1616 p->ycbcr_enc = 0;
1617 p->quantization = 0;
1618 p->xfer_func = 0;
1619}
1620
1621static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
1622 struct file *file, void *fh, void *arg)
1623{
1624 struct v4l2_format *p = arg;
1625 struct video_device *vfd = video_devdata(file);
1626 int ret = check_fmt(file, p->type);
1627
1628 if (ret)
1629 return ret;
1630
1631 memset(&p->fmt, 0, sizeof(p->fmt));
1632
1633 switch (p->type) {
1634 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1635 if (unlikely(!ops->vidioc_g_fmt_vid_cap))
1636 break;
1637 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1638 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg);
1639 /* just in case the driver zeroed it again */
1640 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1641 if (vfd->vfl_type == VFL_TYPE_TOUCH)
1642 v4l_pix_format_touch(&p->fmt.pix);
1643 return ret;
1644 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1645 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
1646 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1647 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
1648 case V4L2_BUF_TYPE_VBI_CAPTURE:
1649 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
1650 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1651 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
1652 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1653 if (unlikely(!ops->vidioc_g_fmt_vid_out))
1654 break;
1655 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1656 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg);
1657 /* just in case the driver zeroed it again */
1658 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1659 return ret;
1660 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1661 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
1662 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1663 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
1664 case V4L2_BUF_TYPE_VBI_OUTPUT:
1665 return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
1666 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1667 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
1668 case V4L2_BUF_TYPE_SDR_CAPTURE:
1669 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg);
1670 case V4L2_BUF_TYPE_SDR_OUTPUT:
1671 return ops->vidioc_g_fmt_sdr_out(file, fh, arg);
1672 case V4L2_BUF_TYPE_META_CAPTURE:
1673 return ops->vidioc_g_fmt_meta_cap(file, fh, arg);
1674 case V4L2_BUF_TYPE_META_OUTPUT:
1675 return ops->vidioc_g_fmt_meta_out(file, fh, arg);
1676 }
1677 return -EINVAL;
1678}
1679
1680static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
1681 struct file *file, void *fh, void *arg)
1682{
1683 struct v4l2_format *p = arg;
1684 struct video_device *vfd = video_devdata(file);
1685 int ret = check_fmt(file, p->type);
1686 unsigned int i;
1687
1688 if (ret)
1689 return ret;
1690
1691 ret = v4l_enable_media_source(vfd);
1692 if (ret)
1693 return ret;
1694 v4l_sanitize_format(p);
1695
1696 switch (p->type) {
1697 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1698 if (unlikely(!ops->vidioc_s_fmt_vid_cap))
1699 break;
1700 memset_after(p, 0, fmt.pix);
1701 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg);
1702 /* just in case the driver zeroed it again */
1703 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1704 if (vfd->vfl_type == VFL_TYPE_TOUCH)
1705 v4l_pix_format_touch(&p->fmt.pix);
1706 return ret;
1707 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1708 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane))
1709 break;
1710 memset_after(p, 0, fmt.pix_mp.xfer_func);
1711 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1712 memset_after(&p->fmt.pix_mp.plane_fmt[i],
1713 0, bytesperline);
1714 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
1715 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1716 if (unlikely(!ops->vidioc_s_fmt_vid_overlay))
1717 break;
1718 memset_after(p, 0, fmt.win);
1719 p->fmt.win.clips = NULL;
1720 p->fmt.win.clipcount = 0;
1721 p->fmt.win.bitmap = NULL;
1722 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
1723 case V4L2_BUF_TYPE_VBI_CAPTURE:
1724 if (unlikely(!ops->vidioc_s_fmt_vbi_cap))
1725 break;
1726 memset_after(p, 0, fmt.vbi.flags);
1727 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
1728 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1729 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap))
1730 break;
1731 memset_after(p, 0, fmt.sliced.io_size);
1732 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
1733 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1734 if (unlikely(!ops->vidioc_s_fmt_vid_out))
1735 break;
1736 memset_after(p, 0, fmt.pix);
1737 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg);
1738 /* just in case the driver zeroed it again */
1739 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1740 return ret;
1741 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1742 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane))
1743 break;
1744 memset_after(p, 0, fmt.pix_mp.xfer_func);
1745 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1746 memset_after(&p->fmt.pix_mp.plane_fmt[i],
1747 0, bytesperline);
1748 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
1749 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1750 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay))
1751 break;
1752 memset_after(p, 0, fmt.win);
1753 p->fmt.win.clips = NULL;
1754 p->fmt.win.clipcount = 0;
1755 p->fmt.win.bitmap = NULL;
1756 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
1757 case V4L2_BUF_TYPE_VBI_OUTPUT:
1758 if (unlikely(!ops->vidioc_s_fmt_vbi_out))
1759 break;
1760 memset_after(p, 0, fmt.vbi.flags);
1761 return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
1762 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1763 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out))
1764 break;
1765 memset_after(p, 0, fmt.sliced.io_size);
1766 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
1767 case V4L2_BUF_TYPE_SDR_CAPTURE:
1768 if (unlikely(!ops->vidioc_s_fmt_sdr_cap))
1769 break;
1770 memset_after(p, 0, fmt.sdr.buffersize);
1771 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg);
1772 case V4L2_BUF_TYPE_SDR_OUTPUT:
1773 if (unlikely(!ops->vidioc_s_fmt_sdr_out))
1774 break;
1775 memset_after(p, 0, fmt.sdr.buffersize);
1776 return ops->vidioc_s_fmt_sdr_out(file, fh, arg);
1777 case V4L2_BUF_TYPE_META_CAPTURE:
1778 if (unlikely(!ops->vidioc_s_fmt_meta_cap))
1779 break;
1780 memset_after(p, 0, fmt.meta);
1781 return ops->vidioc_s_fmt_meta_cap(file, fh, arg);
1782 case V4L2_BUF_TYPE_META_OUTPUT:
1783 if (unlikely(!ops->vidioc_s_fmt_meta_out))
1784 break;
1785 memset_after(p, 0, fmt.meta);
1786 return ops->vidioc_s_fmt_meta_out(file, fh, arg);
1787 }
1788 return -EINVAL;
1789}
1790
1791static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
1792 struct file *file, void *fh, void *arg)
1793{
1794 struct v4l2_format *p = arg;
1795 struct video_device *vfd = video_devdata(file);
1796 int ret = check_fmt(file, p->type);
1797 unsigned int i;
1798
1799 if (ret)
1800 return ret;
1801
1802 v4l_sanitize_format(p);
1803
1804 switch (p->type) {
1805 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1806 if (unlikely(!ops->vidioc_try_fmt_vid_cap))
1807 break;
1808 memset_after(p, 0, fmt.pix);
1809 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg);
1810 /* just in case the driver zeroed it again */
1811 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1812 if (vfd->vfl_type == VFL_TYPE_TOUCH)
1813 v4l_pix_format_touch(&p->fmt.pix);
1814 return ret;
1815 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1816 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane))
1817 break;
1818 memset_after(p, 0, fmt.pix_mp.xfer_func);
1819 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1820 memset_after(&p->fmt.pix_mp.plane_fmt[i],
1821 0, bytesperline);
1822 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
1823 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1824 if (unlikely(!ops->vidioc_try_fmt_vid_overlay))
1825 break;
1826 memset_after(p, 0, fmt.win);
1827 p->fmt.win.clips = NULL;
1828 p->fmt.win.clipcount = 0;
1829 p->fmt.win.bitmap = NULL;
1830 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
1831 case V4L2_BUF_TYPE_VBI_CAPTURE:
1832 if (unlikely(!ops->vidioc_try_fmt_vbi_cap))
1833 break;
1834 memset_after(p, 0, fmt.vbi.flags);
1835 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
1836 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1837 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap))
1838 break;
1839 memset_after(p, 0, fmt.sliced.io_size);
1840 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
1841 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1842 if (unlikely(!ops->vidioc_try_fmt_vid_out))
1843 break;
1844 memset_after(p, 0, fmt.pix);
1845 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg);
1846 /* just in case the driver zeroed it again */
1847 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1848 return ret;
1849 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1850 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane))
1851 break;
1852 memset_after(p, 0, fmt.pix_mp.xfer_func);
1853 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1854 memset_after(&p->fmt.pix_mp.plane_fmt[i],
1855 0, bytesperline);
1856 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
1857 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1858 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay))
1859 break;
1860 memset_after(p, 0, fmt.win);
1861 p->fmt.win.clips = NULL;
1862 p->fmt.win.clipcount = 0;
1863 p->fmt.win.bitmap = NULL;
1864 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
1865 case V4L2_BUF_TYPE_VBI_OUTPUT:
1866 if (unlikely(!ops->vidioc_try_fmt_vbi_out))
1867 break;
1868 memset_after(p, 0, fmt.vbi.flags);
1869 return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
1870 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1871 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out))
1872 break;
1873 memset_after(p, 0, fmt.sliced.io_size);
1874 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
1875 case V4L2_BUF_TYPE_SDR_CAPTURE:
1876 if (unlikely(!ops->vidioc_try_fmt_sdr_cap))
1877 break;
1878 memset_after(p, 0, fmt.sdr.buffersize);
1879 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg);
1880 case V4L2_BUF_TYPE_SDR_OUTPUT:
1881 if (unlikely(!ops->vidioc_try_fmt_sdr_out))
1882 break;
1883 memset_after(p, 0, fmt.sdr.buffersize);
1884 return ops->vidioc_try_fmt_sdr_out(file, fh, arg);
1885 case V4L2_BUF_TYPE_META_CAPTURE:
1886 if (unlikely(!ops->vidioc_try_fmt_meta_cap))
1887 break;
1888 memset_after(p, 0, fmt.meta);
1889 return ops->vidioc_try_fmt_meta_cap(file, fh, arg);
1890 case V4L2_BUF_TYPE_META_OUTPUT:
1891 if (unlikely(!ops->vidioc_try_fmt_meta_out))
1892 break;
1893 memset_after(p, 0, fmt.meta);
1894 return ops->vidioc_try_fmt_meta_out(file, fh, arg);
1895 }
1896 return -EINVAL;
1897}
1898
1899static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
1900 struct file *file, void *fh, void *arg)
1901{
1902 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
1903}
1904
1905static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
1906 struct file *file, void *fh, void *arg)
1907{
1908 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
1909}
1910
1911static int v4l_g_tuner(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_tuner *p = arg;
1916 int err;
1917
1918 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1919 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1920 err = ops->vidioc_g_tuner(file, fh, p);
1921 if (!err)
1922 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1923 return err;
1924}
1925
1926static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
1927 struct file *file, void *fh, void *arg)
1928{
1929 struct video_device *vfd = video_devdata(file);
1930 struct v4l2_tuner *p = arg;
1931 int ret;
1932
1933 ret = v4l_enable_media_source(vfd);
1934 if (ret)
1935 return ret;
1936 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1937 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1938 return ops->vidioc_s_tuner(file, fh, p);
1939}
1940
1941static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,
1942 struct file *file, void *fh, void *arg)
1943{
1944 struct video_device *vfd = video_devdata(file);
1945 struct v4l2_modulator *p = arg;
1946 int err;
1947
1948 if (vfd->vfl_type == VFL_TYPE_RADIO)
1949 p->type = V4L2_TUNER_RADIO;
1950
1951 err = ops->vidioc_g_modulator(file, fh, p);
1952 if (!err)
1953 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1954 return err;
1955}
1956
1957static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops,
1958 struct file *file, void *fh, void *arg)
1959{
1960 struct video_device *vfd = video_devdata(file);
1961 struct v4l2_modulator *p = arg;
1962
1963 if (vfd->vfl_type == VFL_TYPE_RADIO)
1964 p->type = V4L2_TUNER_RADIO;
1965
1966 return ops->vidioc_s_modulator(file, fh, p);
1967}
1968
1969static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
1970 struct file *file, void *fh, void *arg)
1971{
1972 struct video_device *vfd = video_devdata(file);
1973 struct v4l2_frequency *p = arg;
1974
1975 if (vfd->vfl_type == VFL_TYPE_SDR)
1976 p->type = V4L2_TUNER_SDR;
1977 else
1978 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1979 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1980 return ops->vidioc_g_frequency(file, fh, p);
1981}
1982
1983static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
1984 struct file *file, void *fh, void *arg)
1985{
1986 struct video_device *vfd = video_devdata(file);
1987 const struct v4l2_frequency *p = arg;
1988 enum v4l2_tuner_type type;
1989 int ret;
1990
1991 ret = v4l_enable_media_source(vfd);
1992 if (ret)
1993 return ret;
1994 if (vfd->vfl_type == VFL_TYPE_SDR) {
1995 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)
1996 return -EINVAL;
1997 } else {
1998 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1999 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2000 if (type != p->type)
2001 return -EINVAL;
2002 }
2003 return ops->vidioc_s_frequency(file, fh, p);
2004}
2005
2006static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
2007 struct file *file, void *fh, void *arg)
2008{
2009 struct video_device *vfd = video_devdata(file);
2010 struct v4l2_standard *p = arg;
2011
2012 return v4l_video_std_enumstd(p, vfd->tvnorms);
2013}
2014
2015static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
2016 struct file *file, void *fh, void *arg)
2017{
2018 struct video_device *vfd = video_devdata(file);
2019 v4l2_std_id id = *(v4l2_std_id *)arg, norm;
2020 int ret;
2021
2022 ret = v4l_enable_media_source(vfd);
2023 if (ret)
2024 return ret;
2025 norm = id & vfd->tvnorms;
2026 if (vfd->tvnorms && !norm) /* Check if std is supported */
2027 return -EINVAL;
2028
2029 /* Calls the specific handler */
2030 return ops->vidioc_s_std(file, fh, norm);
2031}
2032
2033static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
2034 struct file *file, void *fh, void *arg)
2035{
2036 struct video_device *vfd = video_devdata(file);
2037 v4l2_std_id *p = arg;
2038 int ret;
2039
2040 ret = v4l_enable_media_source(vfd);
2041 if (ret)
2042 return ret;
2043 /*
2044 * If no signal is detected, then the driver should return
2045 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with
2046 * any standards that do not apply removed.
2047 *
2048 * This means that tuners, audio and video decoders can join
2049 * their efforts to improve the standards detection.
2050 */
2051 *p = vfd->tvnorms;
2052 return ops->vidioc_querystd(file, fh, arg);
2053}
2054
2055static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
2056 struct file *file, void *fh, void *arg)
2057{
2058 struct video_device *vfd = video_devdata(file);
2059 struct v4l2_hw_freq_seek *p = arg;
2060 enum v4l2_tuner_type type;
2061 int ret;
2062
2063 ret = v4l_enable_media_source(vfd);
2064 if (ret)
2065 return ret;
2066 /* s_hw_freq_seek is not supported for SDR for now */
2067 if (vfd->vfl_type == VFL_TYPE_SDR)
2068 return -EINVAL;
2069
2070 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2071 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2072 if (p->type != type)
2073 return -EINVAL;
2074 return ops->vidioc_s_hw_freq_seek(file, fh, p);
2075}
2076
2077static int v4l_s_fbuf(const struct v4l2_ioctl_ops *ops,
2078 struct file *file, void *fh, void *arg)
2079{
2080 struct v4l2_framebuffer *p = arg;
2081
2082 p->base = NULL;
2083 return ops->vidioc_s_fbuf(file, fh, p);
2084}
2085
2086static int v4l_overlay(const struct v4l2_ioctl_ops *ops,
2087 struct file *file, void *fh, void *arg)
2088{
2089 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg);
2090}
2091
2092static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,
2093 struct file *file, void *fh, void *arg)
2094{
2095 struct v4l2_requestbuffers *p = arg;
2096 int ret = check_fmt(file, p->type);
2097
2098 if (ret)
2099 return ret;
2100
2101 memset_after(p, 0, flags);
2102
2103 return ops->vidioc_reqbufs(file, fh, p);
2104}
2105
2106static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,
2107 struct file *file, void *fh, void *arg)
2108{
2109 struct v4l2_buffer *p = arg;
2110 int ret = check_fmt(file, p->type);
2111
2112 return ret ? ret : ops->vidioc_querybuf(file, fh, p);
2113}
2114
2115static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,
2116 struct file *file, void *fh, void *arg)
2117{
2118 struct v4l2_buffer *p = arg;
2119 int ret = check_fmt(file, p->type);
2120
2121 return ret ? ret : ops->vidioc_qbuf(file, fh, p);
2122}
2123
2124static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,
2125 struct file *file, void *fh, void *arg)
2126{
2127 struct v4l2_buffer *p = arg;
2128 int ret = check_fmt(file, p->type);
2129
2130 return ret ? ret : ops->vidioc_dqbuf(file, fh, p);
2131}
2132
2133static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
2134 struct file *file, void *fh, void *arg)
2135{
2136 struct v4l2_create_buffers *create = arg;
2137 int ret = check_fmt(file, create->format.type);
2138
2139 if (ret)
2140 return ret;
2141
2142 memset_after(create, 0, flags);
2143
2144 v4l_sanitize_format(&create->format);
2145
2146 ret = ops->vidioc_create_bufs(file, fh, create);
2147
2148 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
2149 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
2150 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
2151
2152 return ret;
2153}
2154
2155static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
2156 struct file *file, void *fh, void *arg)
2157{
2158 struct v4l2_buffer *b = arg;
2159 int ret = check_fmt(file, b->type);
2160
2161 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
2162}
2163
2164static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
2165 struct file *file, void *fh, void *arg)
2166{
2167 struct video_device *vfd = video_devdata(file);
2168 struct v4l2_streamparm *p = arg;
2169 v4l2_std_id std;
2170 int ret = check_fmt(file, p->type);
2171
2172 if (ret)
2173 return ret;
2174 if (ops->vidioc_g_parm)
2175 return ops->vidioc_g_parm(file, fh, p);
2176 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
2177 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2178 return -EINVAL;
2179 if (vfd->device_caps & V4L2_CAP_READWRITE)
2180 p->parm.capture.readbuffers = 2;
2181 ret = ops->vidioc_g_std(file, fh, &std);
2182 if (ret == 0)
2183 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe);
2184 return ret;
2185}
2186
2187static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
2188 struct file *file, void *fh, void *arg)
2189{
2190 struct v4l2_streamparm *p = arg;
2191 int ret = check_fmt(file, p->type);
2192
2193 if (ret)
2194 return ret;
2195
2196 /* Note: extendedmode is never used in drivers */
2197 if (V4L2_TYPE_IS_OUTPUT(p->type)) {
2198 memset(p->parm.output.reserved, 0,
2199 sizeof(p->parm.output.reserved));
2200 p->parm.output.extendedmode = 0;
2201 p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY;
2202 } else {
2203 memset(p->parm.capture.reserved, 0,
2204 sizeof(p->parm.capture.reserved));
2205 p->parm.capture.extendedmode = 0;
2206 p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY;
2207 }
2208 return ops->vidioc_s_parm(file, fh, p);
2209}
2210
2211static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,
2212 struct file *file, void *fh, void *arg)
2213{
2214 struct video_device *vfd = video_devdata(file);
2215 struct v4l2_queryctrl *p = arg;
2216 struct v4l2_fh *vfh =
2217 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2218
2219 if (vfh && vfh->ctrl_handler)
2220 return v4l2_queryctrl(vfh->ctrl_handler, p);
2221 if (vfd->ctrl_handler)
2222 return v4l2_queryctrl(vfd->ctrl_handler, p);
2223 if (ops->vidioc_queryctrl)
2224 return ops->vidioc_queryctrl(file, fh, p);
2225 return -ENOTTY;
2226}
2227
2228static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops,
2229 struct file *file, void *fh, void *arg)
2230{
2231 struct video_device *vfd = video_devdata(file);
2232 struct v4l2_query_ext_ctrl *p = arg;
2233 struct v4l2_fh *vfh =
2234 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2235
2236 if (vfh && vfh->ctrl_handler)
2237 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p);
2238 if (vfd->ctrl_handler)
2239 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p);
2240 if (ops->vidioc_query_ext_ctrl)
2241 return ops->vidioc_query_ext_ctrl(file, fh, p);
2242 return -ENOTTY;
2243}
2244
2245static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,
2246 struct file *file, void *fh, void *arg)
2247{
2248 struct video_device *vfd = video_devdata(file);
2249 struct v4l2_querymenu *p = arg;
2250 struct v4l2_fh *vfh =
2251 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2252
2253 if (vfh && vfh->ctrl_handler)
2254 return v4l2_querymenu(vfh->ctrl_handler, p);
2255 if (vfd->ctrl_handler)
2256 return v4l2_querymenu(vfd->ctrl_handler, p);
2257 if (ops->vidioc_querymenu)
2258 return ops->vidioc_querymenu(file, fh, p);
2259 return -ENOTTY;
2260}
2261
2262static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops,
2263 struct file *file, void *fh, void *arg)
2264{
2265 struct video_device *vfd = video_devdata(file);
2266 struct v4l2_control *p = arg;
2267 struct v4l2_fh *vfh =
2268 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2269 struct v4l2_ext_controls ctrls;
2270 struct v4l2_ext_control ctrl;
2271
2272 if (vfh && vfh->ctrl_handler)
2273 return v4l2_g_ctrl(vfh->ctrl_handler, p);
2274 if (vfd->ctrl_handler)
2275 return v4l2_g_ctrl(vfd->ctrl_handler, p);
2276 if (ops->vidioc_g_ctrl)
2277 return ops->vidioc_g_ctrl(file, fh, p);
2278 if (ops->vidioc_g_ext_ctrls == NULL)
2279 return -ENOTTY;
2280
2281 ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
2282 ctrls.count = 1;
2283 ctrls.controls = &ctrl;
2284 ctrl.id = p->id;
2285 ctrl.value = p->value;
2286 if (check_ext_ctrls(&ctrls, VIDIOC_G_CTRL)) {
2287 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
2288
2289 if (ret == 0)
2290 p->value = ctrl.value;
2291 return ret;
2292 }
2293 return -EINVAL;
2294}
2295
2296static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,
2297 struct file *file, void *fh, void *arg)
2298{
2299 struct video_device *vfd = video_devdata(file);
2300 struct v4l2_control *p = arg;
2301 struct v4l2_fh *vfh =
2302 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2303 struct v4l2_ext_controls ctrls;
2304 struct v4l2_ext_control ctrl;
2305 int ret;
2306
2307 if (vfh && vfh->ctrl_handler)
2308 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
2309 if (vfd->ctrl_handler)
2310 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
2311 if (ops->vidioc_s_ctrl)
2312 return ops->vidioc_s_ctrl(file, fh, p);
2313 if (ops->vidioc_s_ext_ctrls == NULL)
2314 return -ENOTTY;
2315
2316 ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
2317 ctrls.count = 1;
2318 ctrls.controls = &ctrl;
2319 ctrl.id = p->id;
2320 ctrl.value = p->value;
2321 if (!check_ext_ctrls(&ctrls, VIDIOC_S_CTRL))
2322 return -EINVAL;
2323 ret = ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
2324 p->value = ctrl.value;
2325 return ret;
2326}
2327
2328static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2329 struct file *file, void *fh, void *arg)
2330{
2331 struct video_device *vfd = video_devdata(file);
2332 struct v4l2_ext_controls *p = arg;
2333 struct v4l2_fh *vfh =
2334 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2335
2336 p->error_idx = p->count;
2337 if (vfh && vfh->ctrl_handler)
2338 return v4l2_g_ext_ctrls(vfh->ctrl_handler,
2339 vfd, vfd->v4l2_dev->mdev, p);
2340 if (vfd->ctrl_handler)
2341 return v4l2_g_ext_ctrls(vfd->ctrl_handler,
2342 vfd, vfd->v4l2_dev->mdev, p);
2343 if (ops->vidioc_g_ext_ctrls == NULL)
2344 return -ENOTTY;
2345 return check_ext_ctrls(p, VIDIOC_G_EXT_CTRLS) ?
2346 ops->vidioc_g_ext_ctrls(file, fh, p) : -EINVAL;
2347}
2348
2349static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2350 struct file *file, void *fh, void *arg)
2351{
2352 struct video_device *vfd = video_devdata(file);
2353 struct v4l2_ext_controls *p = arg;
2354 struct v4l2_fh *vfh =
2355 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2356
2357 p->error_idx = p->count;
2358 if (vfh && vfh->ctrl_handler)
2359 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler,
2360 vfd, vfd->v4l2_dev->mdev, p);
2361 if (vfd->ctrl_handler)
2362 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler,
2363 vfd, vfd->v4l2_dev->mdev, p);
2364 if (ops->vidioc_s_ext_ctrls == NULL)
2365 return -ENOTTY;
2366 return check_ext_ctrls(p, VIDIOC_S_EXT_CTRLS) ?
2367 ops->vidioc_s_ext_ctrls(file, fh, p) : -EINVAL;
2368}
2369
2370static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2371 struct file *file, void *fh, void *arg)
2372{
2373 struct video_device *vfd = video_devdata(file);
2374 struct v4l2_ext_controls *p = arg;
2375 struct v4l2_fh *vfh =
2376 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2377
2378 p->error_idx = p->count;
2379 if (vfh && vfh->ctrl_handler)
2380 return v4l2_try_ext_ctrls(vfh->ctrl_handler,
2381 vfd, vfd->v4l2_dev->mdev, p);
2382 if (vfd->ctrl_handler)
2383 return v4l2_try_ext_ctrls(vfd->ctrl_handler,
2384 vfd, vfd->v4l2_dev->mdev, p);
2385 if (ops->vidioc_try_ext_ctrls == NULL)
2386 return -ENOTTY;
2387 return check_ext_ctrls(p, VIDIOC_TRY_EXT_CTRLS) ?
2388 ops->vidioc_try_ext_ctrls(file, fh, p) : -EINVAL;
2389}
2390
2391/*
2392 * The selection API specified originally that the _MPLANE buffer types
2393 * shouldn't be used. The reasons for this are lost in the mists of time
2394 * (or just really crappy memories). Regardless, this is really annoying
2395 * for userspace. So to keep things simple we map _MPLANE buffer types
2396 * to their 'regular' counterparts before calling the driver. And we
2397 * restore it afterwards. This way applications can use either buffer
2398 * type and drivers don't need to check for both.
2399 */
2400static int v4l_g_selection(const struct v4l2_ioctl_ops *ops,
2401 struct file *file, void *fh, void *arg)
2402{
2403 struct v4l2_selection *p = arg;
2404 u32 old_type = p->type;
2405 int ret;
2406
2407 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2408 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2409 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2410 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2411 ret = ops->vidioc_g_selection(file, fh, p);
2412 p->type = old_type;
2413 return ret;
2414}
2415
2416static int v4l_s_selection(const struct v4l2_ioctl_ops *ops,
2417 struct file *file, void *fh, void *arg)
2418{
2419 struct v4l2_selection *p = arg;
2420 u32 old_type = p->type;
2421 int ret;
2422
2423 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2424 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2425 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2426 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2427 ret = ops->vidioc_s_selection(file, fh, p);
2428 p->type = old_type;
2429 return ret;
2430}
2431
2432static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
2433 struct file *file, void *fh, void *arg)
2434{
2435 struct video_device *vfd = video_devdata(file);
2436 struct v4l2_crop *p = arg;
2437 struct v4l2_selection s = {
2438 .type = p->type,
2439 };
2440 int ret;
2441
2442 /* simulate capture crop using selection api */
2443
2444 /* crop means compose for output devices */
2445 if (V4L2_TYPE_IS_OUTPUT(p->type))
2446 s.target = V4L2_SEL_TGT_COMPOSE;
2447 else
2448 s.target = V4L2_SEL_TGT_CROP;
2449
2450 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))
2451 s.target = s.target == V4L2_SEL_TGT_COMPOSE ?
2452 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE;
2453
2454 ret = v4l_g_selection(ops, file, fh, &s);
2455
2456 /* copying results to old structure on success */
2457 if (!ret)
2458 p->c = s.r;
2459 return ret;
2460}
2461
2462static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
2463 struct file *file, void *fh, void *arg)
2464{
2465 struct video_device *vfd = video_devdata(file);
2466 struct v4l2_crop *p = arg;
2467 struct v4l2_selection s = {
2468 .type = p->type,
2469 .r = p->c,
2470 };
2471
2472 /* simulate capture crop using selection api */
2473
2474 /* crop means compose for output devices */
2475 if (V4L2_TYPE_IS_OUTPUT(p->type))
2476 s.target = V4L2_SEL_TGT_COMPOSE;
2477 else
2478 s.target = V4L2_SEL_TGT_CROP;
2479
2480 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))
2481 s.target = s.target == V4L2_SEL_TGT_COMPOSE ?
2482 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE;
2483
2484 return v4l_s_selection(ops, file, fh, &s);
2485}
2486
2487static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
2488 struct file *file, void *fh, void *arg)
2489{
2490 struct video_device *vfd = video_devdata(file);
2491 struct v4l2_cropcap *p = arg;
2492 struct v4l2_selection s = { .type = p->type };
2493 int ret = 0;
2494
2495 /* setting trivial pixelaspect */
2496 p->pixelaspect.numerator = 1;
2497 p->pixelaspect.denominator = 1;
2498
2499 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2500 s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2501 else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2502 s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2503
2504 /*
2505 * The determine_valid_ioctls() call already should ensure
2506 * that this can never happen, but just in case...
2507 */
2508 if (WARN_ON(!ops->vidioc_g_selection))
2509 return -ENOTTY;
2510
2511 if (ops->vidioc_g_pixelaspect)
2512 ret = ops->vidioc_g_pixelaspect(file, fh, s.type,
2513 &p->pixelaspect);
2514
2515 /*
2516 * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the
2517 * square pixel aspect ratio in that case.
2518 */
2519 if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD)
2520 return ret;
2521
2522 /* Use g_selection() to fill in the bounds and defrect rectangles */
2523
2524 /* obtaining bounds */
2525 if (V4L2_TYPE_IS_OUTPUT(p->type))
2526 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
2527 else
2528 s.target = V4L2_SEL_TGT_CROP_BOUNDS;
2529
2530 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))
2531 s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ?
2532 V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS;
2533
2534 ret = v4l_g_selection(ops, file, fh, &s);
2535 if (ret)
2536 return ret;
2537 p->bounds = s.r;
2538
2539 /* obtaining defrect */
2540 if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS)
2541 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
2542 else
2543 s.target = V4L2_SEL_TGT_CROP_DEFAULT;
2544
2545 ret = v4l_g_selection(ops, file, fh, &s);
2546 if (ret)
2547 return ret;
2548 p->defrect = s.r;
2549
2550 return 0;
2551}
2552
2553static int v4l_log_status(const struct v4l2_ioctl_ops *ops,
2554 struct file *file, void *fh, void *arg)
2555{
2556 struct video_device *vfd = video_devdata(file);
2557 int ret;
2558
2559 if (vfd->v4l2_dev)
2560 pr_info("%s: ================= START STATUS =================\n",
2561 vfd->v4l2_dev->name);
2562 ret = ops->vidioc_log_status(file, fh);
2563 if (vfd->v4l2_dev)
2564 pr_info("%s: ================== END STATUS ==================\n",
2565 vfd->v4l2_dev->name);
2566 return ret;
2567}
2568
2569static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
2570 struct file *file, void *fh, void *arg)
2571{
2572#ifdef CONFIG_VIDEO_ADV_DEBUG
2573 struct v4l2_dbg_register *p = arg;
2574 struct video_device *vfd = video_devdata(file);
2575 struct v4l2_subdev *sd;
2576 int idx = 0;
2577
2578 if (!capable(CAP_SYS_ADMIN))
2579 return -EPERM;
2580 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2581 if (vfd->v4l2_dev == NULL)
2582 return -EINVAL;
2583 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2584 if (p->match.addr == idx++)
2585 return v4l2_subdev_call(sd, core, g_register, p);
2586 return -EINVAL;
2587 }
2588 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2589 (ops->vidioc_g_chip_info || p->match.addr == 0))
2590 return ops->vidioc_g_register(file, fh, p);
2591 return -EINVAL;
2592#else
2593 return -ENOTTY;
2594#endif
2595}
2596
2597static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
2598 struct file *file, void *fh, void *arg)
2599{
2600#ifdef CONFIG_VIDEO_ADV_DEBUG
2601 const struct v4l2_dbg_register *p = arg;
2602 struct video_device *vfd = video_devdata(file);
2603 struct v4l2_subdev *sd;
2604 int idx = 0;
2605
2606 if (!capable(CAP_SYS_ADMIN))
2607 return -EPERM;
2608 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2609 if (vfd->v4l2_dev == NULL)
2610 return -EINVAL;
2611 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2612 if (p->match.addr == idx++)
2613 return v4l2_subdev_call(sd, core, s_register, p);
2614 return -EINVAL;
2615 }
2616 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2617 (ops->vidioc_g_chip_info || p->match.addr == 0))
2618 return ops->vidioc_s_register(file, fh, p);
2619 return -EINVAL;
2620#else
2621 return -ENOTTY;
2622#endif
2623}
2624
2625static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,
2626 struct file *file, void *fh, void *arg)
2627{
2628#ifdef CONFIG_VIDEO_ADV_DEBUG
2629 struct video_device *vfd = video_devdata(file);
2630 struct v4l2_dbg_chip_info *p = arg;
2631 struct v4l2_subdev *sd;
2632 int idx = 0;
2633
2634 switch (p->match.type) {
2635 case V4L2_CHIP_MATCH_BRIDGE:
2636 if (ops->vidioc_s_register)
2637 p->flags |= V4L2_CHIP_FL_WRITABLE;
2638 if (ops->vidioc_g_register)
2639 p->flags |= V4L2_CHIP_FL_READABLE;
2640 strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));
2641 if (ops->vidioc_g_chip_info)
2642 return ops->vidioc_g_chip_info(file, fh, arg);
2643 if (p->match.addr)
2644 return -EINVAL;
2645 return 0;
2646
2647 case V4L2_CHIP_MATCH_SUBDEV:
2648 if (vfd->v4l2_dev == NULL)
2649 break;
2650 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {
2651 if (p->match.addr != idx++)
2652 continue;
2653 if (sd->ops->core && sd->ops->core->s_register)
2654 p->flags |= V4L2_CHIP_FL_WRITABLE;
2655 if (sd->ops->core && sd->ops->core->g_register)
2656 p->flags |= V4L2_CHIP_FL_READABLE;
2657 strscpy(p->name, sd->name, sizeof(p->name));
2658 return 0;
2659 }
2660 break;
2661 }
2662 return -EINVAL;
2663#else
2664 return -ENOTTY;
2665#endif
2666}
2667
2668static int v4l_dqevent(const struct v4l2_ioctl_ops *ops,
2669 struct file *file, void *fh, void *arg)
2670{
2671 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK);
2672}
2673
2674static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,
2675 struct file *file, void *fh, void *arg)
2676{
2677 return ops->vidioc_subscribe_event(fh, arg);
2678}
2679
2680static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,
2681 struct file *file, void *fh, void *arg)
2682{
2683 return ops->vidioc_unsubscribe_event(fh, arg);
2684}
2685
2686static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,
2687 struct file *file, void *fh, void *arg)
2688{
2689 struct v4l2_sliced_vbi_cap *p = arg;
2690 int ret = check_fmt(file, p->type);
2691
2692 if (ret)
2693 return ret;
2694
2695 /* Clear up to type, everything after type is zeroed already */
2696 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
2697
2698 return ops->vidioc_g_sliced_vbi_cap(file, fh, p);
2699}
2700
2701static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
2702 struct file *file, void *fh, void *arg)
2703{
2704 struct video_device *vfd = video_devdata(file);
2705 struct v4l2_frequency_band *p = arg;
2706 enum v4l2_tuner_type type;
2707 int err;
2708
2709 if (vfd->vfl_type == VFL_TYPE_SDR) {
2710 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)
2711 return -EINVAL;
2712 type = p->type;
2713 } else {
2714 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2715 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2716 if (type != p->type)
2717 return -EINVAL;
2718 }
2719 if (ops->vidioc_enum_freq_bands) {
2720 err = ops->vidioc_enum_freq_bands(file, fh, p);
2721 if (err != -ENOTTY)
2722 return err;
2723 }
2724 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) {
2725 struct v4l2_tuner t = {
2726 .index = p->tuner,
2727 .type = type,
2728 };
2729
2730 if (p->index)
2731 return -EINVAL;
2732 err = ops->vidioc_g_tuner(file, fh, &t);
2733 if (err)
2734 return err;
2735 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2736 p->rangelow = t.rangelow;
2737 p->rangehigh = t.rangehigh;
2738 p->modulation = (type == V4L2_TUNER_RADIO) ?
2739 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2740 return 0;
2741 }
2742 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) {
2743 struct v4l2_modulator m = {
2744 .index = p->tuner,
2745 };
2746
2747 if (type != V4L2_TUNER_RADIO)
2748 return -EINVAL;
2749 if (p->index)
2750 return -EINVAL;
2751 err = ops->vidioc_g_modulator(file, fh, &m);
2752 if (err)
2753 return err;
2754 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2755 p->rangelow = m.rangelow;
2756 p->rangehigh = m.rangehigh;
2757 p->modulation = (type == V4L2_TUNER_RADIO) ?
2758 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2759 return 0;
2760 }
2761 return -ENOTTY;
2762}
2763
2764struct v4l2_ioctl_info {
2765 unsigned int ioctl;
2766 u32 flags;
2767 const char * const name;
2768 int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file,
2769 void *fh, void *p);
2770 void (*debug)(const void *arg, bool write_only);
2771};
2772
2773/* This control needs a priority check */
2774#define INFO_FL_PRIO (1 << 0)
2775/* This control can be valid if the filehandle passes a control handler. */
2776#define INFO_FL_CTRL (1 << 1)
2777/* Queuing ioctl */
2778#define INFO_FL_QUEUE (1 << 2)
2779/* Always copy back result, even on error */
2780#define INFO_FL_ALWAYS_COPY (1 << 3)
2781/* Zero struct from after the field to the end */
2782#define INFO_FL_CLEAR(v4l2_struct, field) \
2783 ((offsetof(struct v4l2_struct, field) + \
2784 sizeof_field(struct v4l2_struct, field)) << 16)
2785#define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
2786
2787#define DEFINE_V4L_STUB_FUNC(_vidioc) \
2788 static int v4l_stub_ ## _vidioc( \
2789 const struct v4l2_ioctl_ops *ops, \
2790 struct file *file, void *fh, void *p) \
2791 { \
2792 return ops->vidioc_ ## _vidioc(file, fh, p); \
2793 }
2794
2795#define IOCTL_INFO(_ioctl, _func, _debug, _flags) \
2796 [_IOC_NR(_ioctl)] = { \
2797 .ioctl = _ioctl, \
2798 .flags = _flags, \
2799 .name = #_ioctl, \
2800 .func = _func, \
2801 .debug = _debug, \
2802 }
2803
2804DEFINE_V4L_STUB_FUNC(g_fbuf)
2805DEFINE_V4L_STUB_FUNC(expbuf)
2806DEFINE_V4L_STUB_FUNC(g_std)
2807DEFINE_V4L_STUB_FUNC(g_audio)
2808DEFINE_V4L_STUB_FUNC(s_audio)
2809DEFINE_V4L_STUB_FUNC(g_edid)
2810DEFINE_V4L_STUB_FUNC(s_edid)
2811DEFINE_V4L_STUB_FUNC(g_audout)
2812DEFINE_V4L_STUB_FUNC(s_audout)
2813DEFINE_V4L_STUB_FUNC(g_jpegcomp)
2814DEFINE_V4L_STUB_FUNC(s_jpegcomp)
2815DEFINE_V4L_STUB_FUNC(enumaudio)
2816DEFINE_V4L_STUB_FUNC(enumaudout)
2817DEFINE_V4L_STUB_FUNC(enum_framesizes)
2818DEFINE_V4L_STUB_FUNC(enum_frameintervals)
2819DEFINE_V4L_STUB_FUNC(g_enc_index)
2820DEFINE_V4L_STUB_FUNC(encoder_cmd)
2821DEFINE_V4L_STUB_FUNC(try_encoder_cmd)
2822DEFINE_V4L_STUB_FUNC(decoder_cmd)
2823DEFINE_V4L_STUB_FUNC(try_decoder_cmd)
2824DEFINE_V4L_STUB_FUNC(s_dv_timings)
2825DEFINE_V4L_STUB_FUNC(g_dv_timings)
2826DEFINE_V4L_STUB_FUNC(enum_dv_timings)
2827DEFINE_V4L_STUB_FUNC(query_dv_timings)
2828DEFINE_V4L_STUB_FUNC(dv_timings_cap)
2829
2830static const struct v4l2_ioctl_info v4l2_ioctls[] = {
2831 IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
2832 IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, 0),
2833 IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0),
2834 IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
2835 IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2836 IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
2837 IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0),
2838 IOCTL_INFO(VIDIOC_S_FBUF, v4l_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
2839 IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO),
2840 IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),
2841 IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)),
2842 IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),
2843 IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2844 IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2845 IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
2846 IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
2847 IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0),
2848 IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
2849 IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
2850 IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
2851 IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
2852 IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
2853 IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
2854 IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
2855 IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0),
2856 IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO),
2857 IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
2858 IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
2859 IOCTL_INFO(VIDIOC_G_INPUT, v4l_g_input, v4l_print_u32, 0),
2860 IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
2861 IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY),
2862 IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY),
2863 IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_g_output, v4l_print_u32, 0),
2864 IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
2865 IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
2866 IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0),
2867 IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO),
2868 IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
2869 IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
2870 IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
2871 IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
2872 IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
2873 IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
2874 IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
2875 IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)),
2876 IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)),
2877 IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0),
2878 IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
2879 IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
2880 IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
2881 IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
2882 IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
2883 IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
2884 IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
2885 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)),
2886 IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
2887 IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY),
2888 IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL | INFO_FL_ALWAYS_COPY),
2889 IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY),
2890 IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
2891 IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
2892 IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0),
2893 IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2894 IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2895 IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
2896 IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0),
2897 IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
2898 IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
2899 IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
2900 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)),
2901 IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0),
2902 IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
2903 IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
2904 IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
2905 IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2906 IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
2907 IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)),
2908 IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY),
2909 IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)),
2910 IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
2911 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)),
2912 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)),
2913};
2914#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
2915
2916static bool v4l2_is_known_ioctl(unsigned int cmd)
2917{
2918 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2919 return false;
2920 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
2921}
2922
2923static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev,
2924 struct v4l2_fh *vfh, unsigned int cmd,
2925 void *arg)
2926{
2927 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2928 return vdev->lock;
2929 if (vfh && vfh->m2m_ctx &&
2930 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) {
2931 if (vfh->m2m_ctx->q_lock)
2932 return vfh->m2m_ctx->q_lock;
2933 }
2934 if (vdev->queue && vdev->queue->lock &&
2935 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
2936 return vdev->queue->lock;
2937 return vdev->lock;
2938}
2939
2940/* Common ioctl debug function. This function can be used by
2941 external ioctl messages as well as internal V4L ioctl */
2942void v4l_printk_ioctl(const char *prefix, unsigned int cmd)
2943{
2944 const char *dir, *type;
2945
2946 if (prefix)
2947 printk(KERN_DEBUG "%s: ", prefix);
2948
2949 switch (_IOC_TYPE(cmd)) {
2950 case 'd':
2951 type = "v4l2_int";
2952 break;
2953 case 'V':
2954 if (!v4l2_is_known_ioctl(cmd)) {
2955 type = "v4l2";
2956 break;
2957 }
2958 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
2959 return;
2960 default:
2961 type = "unknown";
2962 break;
2963 }
2964
2965 switch (_IOC_DIR(cmd)) {
2966 case _IOC_NONE: dir = "--"; break;
2967 case _IOC_READ: dir = "r-"; break;
2968 case _IOC_WRITE: dir = "-w"; break;
2969 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
2970 default: dir = "*ERR*"; break;
2971 }
2972 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
2973 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
2974}
2975EXPORT_SYMBOL(v4l_printk_ioctl);
2976
2977static long __video_do_ioctl(struct file *file,
2978 unsigned int cmd, void *arg)
2979{
2980 struct video_device *vfd = video_devdata(file);
2981 struct mutex *req_queue_lock = NULL;
2982 struct mutex *lock; /* ioctl serialization mutex */
2983 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
2984 bool write_only = false;
2985 struct v4l2_ioctl_info default_info;
2986 const struct v4l2_ioctl_info *info;
2987 void *fh = file->private_data;
2988 struct v4l2_fh *vfh = NULL;
2989 int dev_debug = vfd->dev_debug;
2990 long ret = -ENOTTY;
2991
2992 if (ops == NULL) {
2993 pr_warn("%s: has no ioctl_ops.\n",
2994 video_device_node_name(vfd));
2995 return ret;
2996 }
2997
2998 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
2999 vfh = file->private_data;
3000
3001 /*
3002 * We need to serialize streamon/off with queueing new requests.
3003 * These ioctls may trigger the cancellation of a streaming
3004 * operation, and that should not be mixed with queueing a new
3005 * request at the same time.
3006 */
3007 if (v4l2_device_supports_requests(vfd->v4l2_dev) &&
3008 (cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF)) {
3009 req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex;
3010
3011 if (mutex_lock_interruptible(req_queue_lock))
3012 return -ERESTARTSYS;
3013 }
3014
3015 lock = v4l2_ioctl_get_lock(vfd, vfh, cmd, arg);
3016
3017 if (lock && mutex_lock_interruptible(lock)) {
3018 if (req_queue_lock)
3019 mutex_unlock(req_queue_lock);
3020 return -ERESTARTSYS;
3021 }
3022
3023 if (!video_is_registered(vfd)) {
3024 ret = -ENODEV;
3025 goto unlock;
3026 }
3027
3028 if (v4l2_is_known_ioctl(cmd)) {
3029 info = &v4l2_ioctls[_IOC_NR(cmd)];
3030
3031 if (!is_valid_ioctl(vfd, cmd) &&
3032 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
3033 goto done;
3034
3035 if (vfh && (info->flags & INFO_FL_PRIO)) {
3036 ret = v4l2_prio_check(vfd->prio, vfh->prio);
3037 if (ret)
3038 goto done;
3039 }
3040 } else {
3041 default_info.ioctl = cmd;
3042 default_info.flags = 0;
3043 default_info.debug = v4l_print_default;
3044 info = &default_info;
3045 }
3046
3047 write_only = _IOC_DIR(cmd) == _IOC_WRITE;
3048 if (info != &default_info) {
3049 ret = info->func(ops, file, fh, arg);
3050 } else if (!ops->vidioc_default) {
3051 ret = -ENOTTY;
3052 } else {
3053 ret = ops->vidioc_default(file, fh,
3054 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
3055 cmd, arg);
3056 }
3057
3058done:
3059 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) {
3060 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) &&
3061 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF))
3062 goto unlock;
3063
3064 v4l_printk_ioctl(video_device_node_name(vfd), cmd);
3065 if (ret < 0)
3066 pr_cont(": error %ld", ret);
3067 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG))
3068 pr_cont("\n");
3069 else if (_IOC_DIR(cmd) == _IOC_NONE)
3070 info->debug(arg, write_only);
3071 else {
3072 pr_cont(": ");
3073 info->debug(arg, write_only);
3074 }
3075 }
3076
3077unlock:
3078 if (lock)
3079 mutex_unlock(lock);
3080 if (req_queue_lock)
3081 mutex_unlock(req_queue_lock);
3082 return ret;
3083}
3084
3085static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
3086 void __user **user_ptr, void ***kernel_ptr)
3087{
3088 int ret = 0;
3089
3090 switch (cmd) {
3091 case VIDIOC_PREPARE_BUF:
3092 case VIDIOC_QUERYBUF:
3093 case VIDIOC_QBUF:
3094 case VIDIOC_DQBUF: {
3095 struct v4l2_buffer *buf = parg;
3096
3097 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
3098 if (buf->length > VIDEO_MAX_PLANES) {
3099 ret = -EINVAL;
3100 break;
3101 }
3102 *user_ptr = (void __user *)buf->m.planes;
3103 *kernel_ptr = (void **)&buf->m.planes;
3104 *array_size = sizeof(struct v4l2_plane) * buf->length;
3105 ret = 1;
3106 }
3107 break;
3108 }
3109
3110 case VIDIOC_G_EDID:
3111 case VIDIOC_S_EDID: {
3112 struct v4l2_edid *edid = parg;
3113
3114 if (edid->blocks) {
3115 if (edid->blocks > 256) {
3116 ret = -EINVAL;
3117 break;
3118 }
3119 *user_ptr = (void __user *)edid->edid;
3120 *kernel_ptr = (void **)&edid->edid;
3121 *array_size = edid->blocks * 128;
3122 ret = 1;
3123 }
3124 break;
3125 }
3126
3127 case VIDIOC_S_EXT_CTRLS:
3128 case VIDIOC_G_EXT_CTRLS:
3129 case VIDIOC_TRY_EXT_CTRLS: {
3130 struct v4l2_ext_controls *ctrls = parg;
3131
3132 if (ctrls->count != 0) {
3133 if (ctrls->count > V4L2_CID_MAX_CTRLS) {
3134 ret = -EINVAL;
3135 break;
3136 }
3137 *user_ptr = (void __user *)ctrls->controls;
3138 *kernel_ptr = (void **)&ctrls->controls;
3139 *array_size = sizeof(struct v4l2_ext_control)
3140 * ctrls->count;
3141 ret = 1;
3142 }
3143 break;
3144 }
3145
3146 case VIDIOC_SUBDEV_G_ROUTING:
3147 case VIDIOC_SUBDEV_S_ROUTING: {
3148 struct v4l2_subdev_routing *routing = parg;
3149
3150 if (routing->num_routes > 256)
3151 return -E2BIG;
3152
3153 *user_ptr = u64_to_user_ptr(routing->routes);
3154 *kernel_ptr = (void **)&routing->routes;
3155 *array_size = sizeof(struct v4l2_subdev_route)
3156 * routing->num_routes;
3157 ret = 1;
3158 break;
3159 }
3160 }
3161
3162 return ret;
3163}
3164
3165static unsigned int video_translate_cmd(unsigned int cmd)
3166{
3167#if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME)
3168 switch (cmd) {
3169 case VIDIOC_DQEVENT_TIME32:
3170 return VIDIOC_DQEVENT;
3171 case VIDIOC_QUERYBUF_TIME32:
3172 return VIDIOC_QUERYBUF;
3173 case VIDIOC_QBUF_TIME32:
3174 return VIDIOC_QBUF;
3175 case VIDIOC_DQBUF_TIME32:
3176 return VIDIOC_DQBUF;
3177 case VIDIOC_PREPARE_BUF_TIME32:
3178 return VIDIOC_PREPARE_BUF;
3179 }
3180#endif
3181 if (in_compat_syscall())
3182 return v4l2_compat_translate_cmd(cmd);
3183
3184 return cmd;
3185}
3186
3187static int video_get_user(void __user *arg, void *parg,
3188 unsigned int real_cmd, unsigned int cmd,
3189 bool *always_copy)
3190{
3191 unsigned int n = _IOC_SIZE(real_cmd);
3192 int err = 0;
3193
3194 if (!(_IOC_DIR(cmd) & _IOC_WRITE)) {
3195 /* read-only ioctl */
3196 memset(parg, 0, n);
3197 return 0;
3198 }
3199
3200 /*
3201 * In some cases, only a few fields are used as input,
3202 * i.e. when the app sets "index" and then the driver
3203 * fills in the rest of the structure for the thing
3204 * with that index. We only need to copy up the first
3205 * non-input field.
3206 */
3207 if (v4l2_is_known_ioctl(real_cmd)) {
3208 u32 flags = v4l2_ioctls[_IOC_NR(real_cmd)].flags;
3209
3210 if (flags & INFO_FL_CLEAR_MASK)
3211 n = (flags & INFO_FL_CLEAR_MASK) >> 16;
3212 *always_copy = flags & INFO_FL_ALWAYS_COPY;
3213 }
3214
3215 if (cmd == real_cmd) {
3216 if (copy_from_user(parg, (void __user *)arg, n))
3217 err = -EFAULT;
3218 } else if (in_compat_syscall()) {
3219 memset(parg, 0, n);
3220 err = v4l2_compat_get_user(arg, parg, cmd);
3221 } else {
3222 memset(parg, 0, n);
3223#if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME)
3224 switch (cmd) {
3225 case VIDIOC_QUERYBUF_TIME32:
3226 case VIDIOC_QBUF_TIME32:
3227 case VIDIOC_DQBUF_TIME32:
3228 case VIDIOC_PREPARE_BUF_TIME32: {
3229 struct v4l2_buffer_time32 vb32;
3230 struct v4l2_buffer *vb = parg;
3231
3232 if (copy_from_user(&vb32, arg, sizeof(vb32)))
3233 return -EFAULT;
3234
3235 *vb = (struct v4l2_buffer) {
3236 .index = vb32.index,
3237 .type = vb32.type,
3238 .bytesused = vb32.bytesused,
3239 .flags = vb32.flags,
3240 .field = vb32.field,
3241 .timestamp.tv_sec = vb32.timestamp.tv_sec,
3242 .timestamp.tv_usec = vb32.timestamp.tv_usec,
3243 .timecode = vb32.timecode,
3244 .sequence = vb32.sequence,
3245 .memory = vb32.memory,
3246 .m.userptr = vb32.m.userptr,
3247 .length = vb32.length,
3248 .request_fd = vb32.request_fd,
3249 };
3250 break;
3251 }
3252 }
3253#endif
3254 }
3255
3256 /* zero out anything we don't copy from userspace */
3257 if (!err && n < _IOC_SIZE(real_cmd))
3258 memset((u8 *)parg + n, 0, _IOC_SIZE(real_cmd) - n);
3259 return err;
3260}
3261
3262static int video_put_user(void __user *arg, void *parg,
3263 unsigned int real_cmd, unsigned int cmd)
3264{
3265 if (!(_IOC_DIR(cmd) & _IOC_READ))
3266 return 0;
3267
3268 if (cmd == real_cmd) {
3269 /* Copy results into user buffer */
3270 if (copy_to_user(arg, parg, _IOC_SIZE(cmd)))
3271 return -EFAULT;
3272 return 0;
3273 }
3274
3275 if (in_compat_syscall())
3276 return v4l2_compat_put_user(arg, parg, cmd);
3277
3278#if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME)
3279 switch (cmd) {
3280 case VIDIOC_DQEVENT_TIME32: {
3281 struct v4l2_event *ev = parg;
3282 struct v4l2_event_time32 ev32;
3283
3284 memset(&ev32, 0, sizeof(ev32));
3285
3286 ev32.type = ev->type;
3287 ev32.pending = ev->pending;
3288 ev32.sequence = ev->sequence;
3289 ev32.timestamp.tv_sec = ev->timestamp.tv_sec;
3290 ev32.timestamp.tv_nsec = ev->timestamp.tv_nsec;
3291 ev32.id = ev->id;
3292
3293 memcpy(&ev32.u, &ev->u, sizeof(ev->u));
3294 memcpy(&ev32.reserved, &ev->reserved, sizeof(ev->reserved));
3295
3296 if (copy_to_user(arg, &ev32, sizeof(ev32)))
3297 return -EFAULT;
3298 break;
3299 }
3300 case VIDIOC_QUERYBUF_TIME32:
3301 case VIDIOC_QBUF_TIME32:
3302 case VIDIOC_DQBUF_TIME32:
3303 case VIDIOC_PREPARE_BUF_TIME32: {
3304 struct v4l2_buffer *vb = parg;
3305 struct v4l2_buffer_time32 vb32;
3306
3307 memset(&vb32, 0, sizeof(vb32));
3308
3309 vb32.index = vb->index;
3310 vb32.type = vb->type;
3311 vb32.bytesused = vb->bytesused;
3312 vb32.flags = vb->flags;
3313 vb32.field = vb->field;
3314 vb32.timestamp.tv_sec = vb->timestamp.tv_sec;
3315 vb32.timestamp.tv_usec = vb->timestamp.tv_usec;
3316 vb32.timecode = vb->timecode;
3317 vb32.sequence = vb->sequence;
3318 vb32.memory = vb->memory;
3319 vb32.m.userptr = vb->m.userptr;
3320 vb32.length = vb->length;
3321 vb32.request_fd = vb->request_fd;
3322
3323 if (copy_to_user(arg, &vb32, sizeof(vb32)))
3324 return -EFAULT;
3325 break;
3326 }
3327 }
3328#endif
3329
3330 return 0;
3331}
3332
3333long
3334video_usercopy(struct file *file, unsigned int orig_cmd, unsigned long arg,
3335 v4l2_kioctl func)
3336{
3337 char sbuf[128];
3338 void *mbuf = NULL, *array_buf = NULL;
3339 void *parg = (void *)arg;
3340 long err = -EINVAL;
3341 bool has_array_args;
3342 bool always_copy = false;
3343 size_t array_size = 0;
3344 void __user *user_ptr = NULL;
3345 void **kernel_ptr = NULL;
3346 unsigned int cmd = video_translate_cmd(orig_cmd);
3347 const size_t ioc_size = _IOC_SIZE(cmd);
3348
3349 /* Copy arguments into temp kernel buffer */
3350 if (_IOC_DIR(cmd) != _IOC_NONE) {
3351 if (ioc_size <= sizeof(sbuf)) {
3352 parg = sbuf;
3353 } else {
3354 /* too big to allocate from stack */
3355 mbuf = kmalloc(ioc_size, GFP_KERNEL);
3356 if (NULL == mbuf)
3357 return -ENOMEM;
3358 parg = mbuf;
3359 }
3360
3361 err = video_get_user((void __user *)arg, parg, cmd,
3362 orig_cmd, &always_copy);
3363 if (err)
3364 goto out;
3365 }
3366
3367 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
3368 if (err < 0)
3369 goto out;
3370 has_array_args = err;
3371
3372 if (has_array_args) {
3373 array_buf = kvmalloc(array_size, GFP_KERNEL);
3374 err = -ENOMEM;
3375 if (array_buf == NULL)
3376 goto out;
3377 if (in_compat_syscall())
3378 err = v4l2_compat_get_array_args(file, array_buf,
3379 user_ptr, array_size,
3380 orig_cmd, parg);
3381 else
3382 err = copy_from_user(array_buf, user_ptr, array_size) ?
3383 -EFAULT : 0;
3384 if (err)
3385 goto out;
3386 *kernel_ptr = array_buf;
3387 }
3388
3389 /* Handles IOCTL */
3390 err = func(file, cmd, parg);
3391 if (err == -ENOTTY || err == -ENOIOCTLCMD) {
3392 err = -ENOTTY;
3393 goto out;
3394 }
3395
3396 if (err == 0) {
3397 if (cmd == VIDIOC_DQBUF)
3398 trace_v4l2_dqbuf(video_devdata(file)->minor, parg);
3399 else if (cmd == VIDIOC_QBUF)
3400 trace_v4l2_qbuf(video_devdata(file)->minor, parg);
3401 }
3402
3403 /*
3404 * Some ioctls can return an error, but still have valid
3405 * results that must be returned.
3406 *
3407 * FIXME: subdev IOCTLS are partially handled here and partially in
3408 * v4l2-subdev.c and the 'always_copy' flag can only be set for IOCTLS
3409 * defined here as part of the 'v4l2_ioctls' array. As
3410 * VIDIOC_SUBDEV_G_ROUTING needs to return results to applications even
3411 * in case of failure, but it is not defined here as part of the
3412 * 'v4l2_ioctls' array, insert an ad-hoc check to address that.
3413 */
3414 if (err < 0 && !always_copy && cmd != VIDIOC_SUBDEV_G_ROUTING)
3415 goto out;
3416
3417 if (has_array_args) {
3418 *kernel_ptr = (void __force *)user_ptr;
3419 if (in_compat_syscall()) {
3420 int put_err;
3421
3422 put_err = v4l2_compat_put_array_args(file, user_ptr,
3423 array_buf,
3424 array_size,
3425 orig_cmd, parg);
3426 if (put_err)
3427 err = put_err;
3428 } else if (copy_to_user(user_ptr, array_buf, array_size)) {
3429 err = -EFAULT;
3430 }
3431 }
3432
3433 if (video_put_user((void __user *)arg, parg, cmd, orig_cmd))
3434 err = -EFAULT;
3435out:
3436 kvfree(array_buf);
3437 kfree(mbuf);
3438 return err;
3439}
3440
3441long video_ioctl2(struct file *file,
3442 unsigned int cmd, unsigned long arg)
3443{
3444 return video_usercopy(file, cmd, arg, __video_do_ioctl);
3445}
3446EXPORT_SYMBOL(video_ioctl2);