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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, width=%u, height=%u, bytesperline=%u\n",
347 &pixelformat, meta->buffersize, meta->width,
348 meta->height, meta->bytesperline);
349 break;
350 }
351}
352
353static void v4l_print_framebuffer(const void *arg, bool write_only)
354{
355 const struct v4l2_framebuffer *p = arg;
356
357 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, height=%u, pixelformat=%p4cc, bytesperline=%u, sizeimage=%u, colorspace=%d\n",
358 p->capability, p->flags, p->base, p->fmt.width, p->fmt.height,
359 &p->fmt.pixelformat, p->fmt.bytesperline, p->fmt.sizeimage,
360 p->fmt.colorspace);
361}
362
363static void v4l_print_buftype(const void *arg, bool write_only)
364{
365 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names));
366}
367
368static void v4l_print_modulator(const void *arg, bool write_only)
369{
370 const struct v4l2_modulator *p = arg;
371
372 if (write_only)
373 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans);
374 else
375 pr_cont("index=%u, name=%.*s, capability=0x%x, rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
376 p->index, (int)sizeof(p->name), p->name, p->capability,
377 p->rangelow, p->rangehigh, p->txsubchans);
378}
379
380static void v4l_print_tuner(const void *arg, bool write_only)
381{
382 const struct v4l2_tuner *p = arg;
383
384 if (write_only)
385 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode);
386 else
387 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",
388 p->index, (int)sizeof(p->name), p->name, p->type,
389 p->capability, p->rangelow,
390 p->rangehigh, p->signal, p->afc,
391 p->rxsubchans, p->audmode);
392}
393
394static void v4l_print_frequency(const void *arg, bool write_only)
395{
396 const struct v4l2_frequency *p = arg;
397
398 pr_cont("tuner=%u, type=%u, frequency=%u\n",
399 p->tuner, p->type, p->frequency);
400}
401
402static void v4l_print_standard(const void *arg, bool write_only)
403{
404 const struct v4l2_standard *p = arg;
405
406 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, framelines=%u\n",
407 p->index,
408 (unsigned long long)p->id, (int)sizeof(p->name), p->name,
409 p->frameperiod.numerator,
410 p->frameperiod.denominator,
411 p->framelines);
412}
413
414static void v4l_print_std(const void *arg, bool write_only)
415{
416 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg);
417}
418
419static void v4l_print_hw_freq_seek(const void *arg, bool write_only)
420{
421 const struct v4l2_hw_freq_seek *p = arg;
422
423 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, rangelow=%u, rangehigh=%u\n",
424 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing,
425 p->rangelow, p->rangehigh);
426}
427
428static void v4l_print_requestbuffers(const void *arg, bool write_only)
429{
430 const struct v4l2_requestbuffers *p = arg;
431
432 pr_cont("count=%d, type=%s, memory=%s\n",
433 p->count,
434 prt_names(p->type, v4l2_type_names),
435 prt_names(p->memory, v4l2_memory_names));
436}
437
438static void v4l_print_buffer(const void *arg, bool write_only)
439{
440 const struct v4l2_buffer *p = arg;
441 const struct v4l2_timecode *tc = &p->timecode;
442 const struct v4l2_plane *plane;
443 int i;
444
445 pr_cont("%02d:%02d:%02d.%06ld index=%d, type=%s, request_fd=%d, flags=0x%08x, field=%s, sequence=%d, memory=%s",
446 (int)p->timestamp.tv_sec / 3600,
447 ((int)p->timestamp.tv_sec / 60) % 60,
448 ((int)p->timestamp.tv_sec % 60),
449 (long)p->timestamp.tv_usec,
450 p->index,
451 prt_names(p->type, v4l2_type_names), p->request_fd,
452 p->flags, prt_names(p->field, v4l2_field_names),
453 p->sequence, prt_names(p->memory, v4l2_memory_names));
454
455 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
456 pr_cont("\n");
457 for (i = 0; i < p->length; ++i) {
458 plane = &p->m.planes[i];
459 printk(KERN_DEBUG
460 "plane %d: bytesused=%d, data_offset=0x%08x, offset/userptr=0x%lx, length=%d\n",
461 i, plane->bytesused, plane->data_offset,
462 plane->m.userptr, plane->length);
463 }
464 } else {
465 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n",
466 p->bytesused, p->m.userptr, p->length);
467 }
468
469 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, flags=0x%08x, frames=%d, userbits=0x%08x\n",
470 tc->hours, tc->minutes, tc->seconds,
471 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
472}
473
474static void v4l_print_exportbuffer(const void *arg, bool write_only)
475{
476 const struct v4l2_exportbuffer *p = arg;
477
478 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n",
479 p->fd, prt_names(p->type, v4l2_type_names),
480 p->index, p->plane, p->flags);
481}
482
483static void v4l_print_create_buffers(const void *arg, bool write_only)
484{
485 const struct v4l2_create_buffers *p = arg;
486
487 pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, max num buffers=%u, ",
488 p->index, p->count, prt_names(p->memory, v4l2_memory_names),
489 p->capabilities, p->max_num_buffers);
490 v4l_print_format(&p->format, write_only);
491}
492
493static void v4l_print_remove_buffers(const void *arg, bool write_only)
494{
495 const struct v4l2_remove_buffers *p = arg;
496
497 pr_cont("type=%s, index=%u, count=%u\n",
498 prt_names(p->type, v4l2_type_names), p->index, p->count);
499}
500
501static void v4l_print_streamparm(const void *arg, bool write_only)
502{
503 const struct v4l2_streamparm *p = arg;
504
505 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
506
507 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
508 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
509 const struct v4l2_captureparm *c = &p->parm.capture;
510
511 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, extendedmode=%d, readbuffers=%d\n",
512 c->capability, c->capturemode,
513 c->timeperframe.numerator, c->timeperframe.denominator,
514 c->extendedmode, c->readbuffers);
515 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
516 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
517 const struct v4l2_outputparm *c = &p->parm.output;
518
519 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, extendedmode=%d, writebuffers=%d\n",
520 c->capability, c->outputmode,
521 c->timeperframe.numerator, c->timeperframe.denominator,
522 c->extendedmode, c->writebuffers);
523 } else {
524 pr_cont("\n");
525 }
526}
527
528static void v4l_print_queryctrl(const void *arg, bool write_only)
529{
530 const struct v4l2_queryctrl *p = arg;
531
532 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, step=%d, default=%d, flags=0x%08x\n",
533 p->id, p->type, (int)sizeof(p->name), p->name,
534 p->minimum, p->maximum,
535 p->step, p->default_value, p->flags);
536}
537
538static void v4l_print_query_ext_ctrl(const void *arg, bool write_only)
539{
540 const struct v4l2_query_ext_ctrl *p = arg;
541
542 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",
543 p->id, p->type, (int)sizeof(p->name), p->name,
544 p->minimum, p->maximum,
545 p->step, p->default_value, p->flags,
546 p->elem_size, p->elems, p->nr_of_dims,
547 p->dims[0], p->dims[1], p->dims[2], p->dims[3]);
548}
549
550static void v4l_print_querymenu(const void *arg, bool write_only)
551{
552 const struct v4l2_querymenu *p = arg;
553
554 pr_cont("id=0x%x, index=%d\n", p->id, p->index);
555}
556
557static void v4l_print_control(const void *arg, bool write_only)
558{
559 const struct v4l2_control *p = arg;
560 const char *name = v4l2_ctrl_get_name(p->id);
561
562 if (name)
563 pr_cont("name=%s, ", name);
564 pr_cont("id=0x%x, value=%d\n", p->id, p->value);
565}
566
567static void v4l_print_ext_controls(const void *arg, bool write_only)
568{
569 const struct v4l2_ext_controls *p = arg;
570 int i;
571
572 pr_cont("which=0x%x, count=%d, error_idx=%d, request_fd=%d",
573 p->which, p->count, p->error_idx, p->request_fd);
574 for (i = 0; i < p->count; i++) {
575 unsigned int id = p->controls[i].id;
576 const char *name = v4l2_ctrl_get_name(id);
577
578 if (name)
579 pr_cont(", name=%s", name);
580 if (!p->controls[i].size)
581 pr_cont(", id/val=0x%x/0x%x", id, p->controls[i].value);
582 else
583 pr_cont(", id/size=0x%x/%u", id, p->controls[i].size);
584 }
585 pr_cont("\n");
586}
587
588static void v4l_print_cropcap(const void *arg, bool write_only)
589{
590 const struct v4l2_cropcap *p = arg;
591
592 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, defrect wxh=%dx%d, x,y=%d,%d, pixelaspect %d/%d\n",
593 prt_names(p->type, v4l2_type_names),
594 p->bounds.width, p->bounds.height,
595 p->bounds.left, p->bounds.top,
596 p->defrect.width, p->defrect.height,
597 p->defrect.left, p->defrect.top,
598 p->pixelaspect.numerator, p->pixelaspect.denominator);
599}
600
601static void v4l_print_crop(const void *arg, bool write_only)
602{
603 const struct v4l2_crop *p = arg;
604
605 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n",
606 prt_names(p->type, v4l2_type_names),
607 p->c.width, p->c.height,
608 p->c.left, p->c.top);
609}
610
611static void v4l_print_selection(const void *arg, bool write_only)
612{
613 const struct v4l2_selection *p = arg;
614
615 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n",
616 prt_names(p->type, v4l2_type_names),
617 p->target, p->flags,
618 p->r.width, p->r.height, p->r.left, p->r.top);
619}
620
621static void v4l_print_jpegcompression(const void *arg, bool write_only)
622{
623 const struct v4l2_jpegcompression *p = arg;
624
625 pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n",
626 p->quality, p->APPn, p->APP_len,
627 p->COM_len, p->jpeg_markers);
628}
629
630static void v4l_print_enc_idx(const void *arg, bool write_only)
631{
632 const struct v4l2_enc_idx *p = arg;
633
634 pr_cont("entries=%d, entries_cap=%d\n",
635 p->entries, p->entries_cap);
636}
637
638static void v4l_print_encoder_cmd(const void *arg, bool write_only)
639{
640 const struct v4l2_encoder_cmd *p = arg;
641
642 pr_cont("cmd=%d, flags=0x%x\n",
643 p->cmd, p->flags);
644}
645
646static void v4l_print_decoder_cmd(const void *arg, bool write_only)
647{
648 const struct v4l2_decoder_cmd *p = arg;
649
650 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags);
651
652 if (p->cmd == V4L2_DEC_CMD_START)
653 pr_info("speed=%d, format=%u\n",
654 p->start.speed, p->start.format);
655 else if (p->cmd == V4L2_DEC_CMD_STOP)
656 pr_info("pts=%llu\n", p->stop.pts);
657}
658
659static void v4l_print_dbg_chip_info(const void *arg, bool write_only)
660{
661 const struct v4l2_dbg_chip_info *p = arg;
662
663 pr_cont("type=%u, ", p->match.type);
664 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
665 pr_cont("name=%.*s, ",
666 (int)sizeof(p->match.name), p->match.name);
667 else
668 pr_cont("addr=%u, ", p->match.addr);
669 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name);
670}
671
672static void v4l_print_dbg_register(const void *arg, bool write_only)
673{
674 const struct v4l2_dbg_register *p = arg;
675
676 pr_cont("type=%u, ", p->match.type);
677 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
678 pr_cont("name=%.*s, ",
679 (int)sizeof(p->match.name), p->match.name);
680 else
681 pr_cont("addr=%u, ", p->match.addr);
682 pr_cont("reg=0x%llx, val=0x%llx\n",
683 p->reg, p->val);
684}
685
686static void v4l_print_dv_timings(const void *arg, bool write_only)
687{
688 const struct v4l2_dv_timings *p = arg;
689
690 switch (p->type) {
691 case V4L2_DV_BT_656_1120:
692 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",
693 p->bt.interlaced, p->bt.pixelclock,
694 p->bt.width, p->bt.height,
695 p->bt.polarities, p->bt.hfrontporch,
696 p->bt.hsync, p->bt.hbackporch,
697 p->bt.vfrontporch, p->bt.vsync,
698 p->bt.vbackporch, p->bt.il_vfrontporch,
699 p->bt.il_vsync, p->bt.il_vbackporch,
700 p->bt.standards, p->bt.flags);
701 break;
702 default:
703 pr_cont("type=%d\n", p->type);
704 break;
705 }
706}
707
708static void v4l_print_enum_dv_timings(const void *arg, bool write_only)
709{
710 const struct v4l2_enum_dv_timings *p = arg;
711
712 pr_cont("index=%u, ", p->index);
713 v4l_print_dv_timings(&p->timings, write_only);
714}
715
716static void v4l_print_dv_timings_cap(const void *arg, bool write_only)
717{
718 const struct v4l2_dv_timings_cap *p = arg;
719
720 switch (p->type) {
721 case V4L2_DV_BT_656_1120:
722 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
723 p->bt.min_width, p->bt.max_width,
724 p->bt.min_height, p->bt.max_height,
725 p->bt.min_pixelclock, p->bt.max_pixelclock,
726 p->bt.standards, p->bt.capabilities);
727 break;
728 default:
729 pr_cont("type=%u\n", p->type);
730 break;
731 }
732}
733
734static void v4l_print_frmsizeenum(const void *arg, bool write_only)
735{
736 const struct v4l2_frmsizeenum *p = arg;
737
738 pr_cont("index=%u, pixelformat=%p4cc, type=%u",
739 p->index, &p->pixel_format, p->type);
740 switch (p->type) {
741 case V4L2_FRMSIZE_TYPE_DISCRETE:
742 pr_cont(", wxh=%ux%u\n",
743 p->discrete.width, p->discrete.height);
744 break;
745 case V4L2_FRMSIZE_TYPE_STEPWISE:
746 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n",
747 p->stepwise.min_width,
748 p->stepwise.min_height,
749 p->stepwise.max_width,
750 p->stepwise.max_height,
751 p->stepwise.step_width,
752 p->stepwise.step_height);
753 break;
754 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
755 default:
756 pr_cont("\n");
757 break;
758 }
759}
760
761static void v4l_print_frmivalenum(const void *arg, bool write_only)
762{
763 const struct v4l2_frmivalenum *p = arg;
764
765 pr_cont("index=%u, pixelformat=%p4cc, wxh=%ux%u, type=%u",
766 p->index, &p->pixel_format, p->width, p->height, p->type);
767 switch (p->type) {
768 case V4L2_FRMIVAL_TYPE_DISCRETE:
769 pr_cont(", fps=%d/%d\n",
770 p->discrete.numerator,
771 p->discrete.denominator);
772 break;
773 case V4L2_FRMIVAL_TYPE_STEPWISE:
774 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n",
775 p->stepwise.min.numerator,
776 p->stepwise.min.denominator,
777 p->stepwise.max.numerator,
778 p->stepwise.max.denominator,
779 p->stepwise.step.numerator,
780 p->stepwise.step.denominator);
781 break;
782 case V4L2_FRMIVAL_TYPE_CONTINUOUS:
783 default:
784 pr_cont("\n");
785 break;
786 }
787}
788
789static void v4l_print_event(const void *arg, bool write_only)
790{
791 const struct v4l2_event *p = arg;
792 const struct v4l2_event_ctrl *c;
793
794 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%llu.%9.9llu\n",
795 p->type, p->pending, p->sequence, p->id,
796 p->timestamp.tv_sec, p->timestamp.tv_nsec);
797 switch (p->type) {
798 case V4L2_EVENT_VSYNC:
799 printk(KERN_DEBUG "field=%s\n",
800 prt_names(p->u.vsync.field, v4l2_field_names));
801 break;
802 case V4L2_EVENT_CTRL:
803 c = &p->u.ctrl;
804 printk(KERN_DEBUG "changes=0x%x, type=%u, ",
805 c->changes, c->type);
806 if (c->type == V4L2_CTRL_TYPE_INTEGER64)
807 pr_cont("value64=%lld, ", c->value64);
808 else
809 pr_cont("value=%d, ", c->value);
810 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n",
811 c->flags, c->minimum, c->maximum,
812 c->step, c->default_value);
813 break;
814 case V4L2_EVENT_FRAME_SYNC:
815 pr_cont("frame_sequence=%u\n",
816 p->u.frame_sync.frame_sequence);
817 break;
818 }
819}
820
821static void v4l_print_event_subscription(const void *arg, bool write_only)
822{
823 const struct v4l2_event_subscription *p = arg;
824
825 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
826 p->type, p->id, p->flags);
827}
828
829static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only)
830{
831 const struct v4l2_sliced_vbi_cap *p = arg;
832 int i;
833
834 pr_cont("type=%s, service_set=0x%08x\n",
835 prt_names(p->type, v4l2_type_names), p->service_set);
836 for (i = 0; i < 24; i++)
837 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
838 p->service_lines[0][i],
839 p->service_lines[1][i]);
840}
841
842static void v4l_print_freq_band(const void *arg, bool write_only)
843{
844 const struct v4l2_frequency_band *p = arg;
845
846 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n",
847 p->tuner, p->type, p->index,
848 p->capability, p->rangelow,
849 p->rangehigh, p->modulation);
850}
851
852static void v4l_print_edid(const void *arg, bool write_only)
853{
854 const struct v4l2_edid *p = arg;
855
856 pr_cont("pad=%u, start_block=%u, blocks=%u\n",
857 p->pad, p->start_block, p->blocks);
858}
859
860static void v4l_print_u32(const void *arg, bool write_only)
861{
862 pr_cont("value=%u\n", *(const u32 *)arg);
863}
864
865static void v4l_print_newline(const void *arg, bool write_only)
866{
867 pr_cont("\n");
868}
869
870static void v4l_print_default(const void *arg, bool write_only)
871{
872 pr_cont("driver-specific ioctl\n");
873}
874
875static bool check_ext_ctrls(struct v4l2_ext_controls *c, unsigned long ioctl)
876{
877 __u32 i;
878
879 /* zero the reserved fields */
880 c->reserved[0] = 0;
881 for (i = 0; i < c->count; i++)
882 c->controls[i].reserved2[0] = 0;
883
884 switch (c->which) {
885 case V4L2_CID_PRIVATE_BASE:
886 /*
887 * V4L2_CID_PRIVATE_BASE cannot be used as control class
888 * when using extended controls.
889 * Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
890 * is it allowed for backwards compatibility.
891 */
892 if (ioctl == VIDIOC_G_CTRL || ioctl == VIDIOC_S_CTRL)
893 return false;
894 break;
895 case V4L2_CTRL_WHICH_DEF_VAL:
896 /* Default value cannot be changed */
897 if (ioctl == VIDIOC_S_EXT_CTRLS ||
898 ioctl == VIDIOC_TRY_EXT_CTRLS) {
899 c->error_idx = c->count;
900 return false;
901 }
902 return true;
903 case V4L2_CTRL_WHICH_CUR_VAL:
904 return true;
905 case V4L2_CTRL_WHICH_REQUEST_VAL:
906 c->error_idx = c->count;
907 return false;
908 }
909
910 /* Check that all controls are from the same control class. */
911 for (i = 0; i < c->count; i++) {
912 if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) {
913 c->error_idx = ioctl == VIDIOC_TRY_EXT_CTRLS ? i :
914 c->count;
915 return false;
916 }
917 }
918 return true;
919}
920
921static int check_fmt(struct file *file, enum v4l2_buf_type type)
922{
923 const u32 vid_caps = V4L2_CAP_VIDEO_CAPTURE |
924 V4L2_CAP_VIDEO_CAPTURE_MPLANE |
925 V4L2_CAP_VIDEO_OUTPUT |
926 V4L2_CAP_VIDEO_OUTPUT_MPLANE |
927 V4L2_CAP_VIDEO_M2M | V4L2_CAP_VIDEO_M2M_MPLANE;
928 const u32 meta_caps = V4L2_CAP_META_CAPTURE |
929 V4L2_CAP_META_OUTPUT;
930 struct video_device *vfd = video_devdata(file);
931 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
932 bool is_vid = vfd->vfl_type == VFL_TYPE_VIDEO &&
933 (vfd->device_caps & vid_caps);
934 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI;
935 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
936 bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH;
937 bool is_meta = vfd->vfl_type == VFL_TYPE_VIDEO &&
938 (vfd->device_caps & meta_caps);
939 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
940 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
941
942 if (ops == NULL)
943 return -EINVAL;
944
945 switch (type) {
946 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
947 if ((is_vid || is_tch) && is_rx &&
948 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane))
949 return 0;
950 break;
951 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
952 if ((is_vid || is_tch) && is_rx && ops->vidioc_g_fmt_vid_cap_mplane)
953 return 0;
954 break;
955 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
956 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay)
957 return 0;
958 break;
959 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
960 if (is_vid && is_tx &&
961 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane))
962 return 0;
963 break;
964 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
965 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane)
966 return 0;
967 break;
968 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
969 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay)
970 return 0;
971 break;
972 case V4L2_BUF_TYPE_VBI_CAPTURE:
973 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap)
974 return 0;
975 break;
976 case V4L2_BUF_TYPE_VBI_OUTPUT:
977 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out)
978 return 0;
979 break;
980 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
981 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap)
982 return 0;
983 break;
984 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
985 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out)
986 return 0;
987 break;
988 case V4L2_BUF_TYPE_SDR_CAPTURE:
989 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap)
990 return 0;
991 break;
992 case V4L2_BUF_TYPE_SDR_OUTPUT:
993 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out)
994 return 0;
995 break;
996 case V4L2_BUF_TYPE_META_CAPTURE:
997 if (is_meta && is_rx && ops->vidioc_g_fmt_meta_cap)
998 return 0;
999 break;
1000 case V4L2_BUF_TYPE_META_OUTPUT:
1001 if (is_meta && is_tx && ops->vidioc_g_fmt_meta_out)
1002 return 0;
1003 break;
1004 default:
1005 break;
1006 }
1007 return -EINVAL;
1008}
1009
1010static void v4l_sanitize_colorspace(u32 pixelformat, u32 *colorspace,
1011 u32 *encoding, u32 *quantization,
1012 u32 *xfer_func)
1013{
1014 bool is_hsv = pixelformat == V4L2_PIX_FMT_HSV24 ||
1015 pixelformat == V4L2_PIX_FMT_HSV32;
1016
1017 if (!v4l2_is_colorspace_valid(*colorspace)) {
1018 *colorspace = V4L2_COLORSPACE_DEFAULT;
1019 *encoding = V4L2_YCBCR_ENC_DEFAULT;
1020 *quantization = V4L2_QUANTIZATION_DEFAULT;
1021 *xfer_func = V4L2_XFER_FUNC_DEFAULT;
1022 }
1023
1024 if ((!is_hsv && !v4l2_is_ycbcr_enc_valid(*encoding)) ||
1025 (is_hsv && !v4l2_is_hsv_enc_valid(*encoding)))
1026 *encoding = V4L2_YCBCR_ENC_DEFAULT;
1027
1028 if (!v4l2_is_quant_valid(*quantization))
1029 *quantization = V4L2_QUANTIZATION_DEFAULT;
1030
1031 if (!v4l2_is_xfer_func_valid(*xfer_func))
1032 *xfer_func = V4L2_XFER_FUNC_DEFAULT;
1033}
1034
1035static void v4l_sanitize_format(struct v4l2_format *fmt)
1036{
1037 unsigned int offset;
1038
1039 /* Make sure num_planes is not bogus */
1040 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ||
1041 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
1042 fmt->fmt.pix_mp.num_planes = min_t(u32, fmt->fmt.pix_mp.num_planes,
1043 VIDEO_MAX_PLANES);
1044
1045 /*
1046 * The v4l2_pix_format structure has been extended with fields that were
1047 * not previously required to be set to zero by applications. The priv
1048 * field, when set to a magic value, indicates that the extended fields
1049 * are valid. Otherwise they will contain undefined values. To simplify
1050 * the API towards drivers zero the extended fields and set the priv
1051 * field to the magic value when the extended pixel format structure
1052 * isn't used by applications.
1053 */
1054 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1055 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1056 if (fmt->fmt.pix.priv != V4L2_PIX_FMT_PRIV_MAGIC) {
1057 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1058
1059 offset = offsetof(struct v4l2_pix_format, priv)
1060 + sizeof(fmt->fmt.pix.priv);
1061 memset(((void *)&fmt->fmt.pix) + offset, 0,
1062 sizeof(fmt->fmt.pix) - offset);
1063 }
1064 }
1065
1066 /* Replace invalid colorspace values with defaults. */
1067 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1068 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1069 v4l_sanitize_colorspace(fmt->fmt.pix.pixelformat,
1070 &fmt->fmt.pix.colorspace,
1071 &fmt->fmt.pix.ycbcr_enc,
1072 &fmt->fmt.pix.quantization,
1073 &fmt->fmt.pix.xfer_func);
1074 } else if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ||
1075 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
1076 u32 ycbcr_enc = fmt->fmt.pix_mp.ycbcr_enc;
1077 u32 quantization = fmt->fmt.pix_mp.quantization;
1078 u32 xfer_func = fmt->fmt.pix_mp.xfer_func;
1079
1080 v4l_sanitize_colorspace(fmt->fmt.pix_mp.pixelformat,
1081 &fmt->fmt.pix_mp.colorspace, &ycbcr_enc,
1082 &quantization, &xfer_func);
1083
1084 fmt->fmt.pix_mp.ycbcr_enc = ycbcr_enc;
1085 fmt->fmt.pix_mp.quantization = quantization;
1086 fmt->fmt.pix_mp.xfer_func = xfer_func;
1087 }
1088}
1089
1090static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
1091 struct file *file, void *fh, void *arg)
1092{
1093 struct v4l2_capability *cap = (struct v4l2_capability *)arg;
1094 struct video_device *vfd = video_devdata(file);
1095 int ret;
1096
1097 cap->version = LINUX_VERSION_CODE;
1098 cap->device_caps = vfd->device_caps;
1099 cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS;
1100
1101 media_set_bus_info(cap->bus_info, sizeof(cap->bus_info),
1102 vfd->dev_parent);
1103
1104 ret = ops->vidioc_querycap(file, fh, cap);
1105
1106 /*
1107 * Drivers must not change device_caps, so check for this and
1108 * warn if this happened.
1109 */
1110 WARN_ON(cap->device_caps != vfd->device_caps);
1111 /*
1112 * Check that capabilities is a superset of
1113 * vfd->device_caps | V4L2_CAP_DEVICE_CAPS
1114 */
1115 WARN_ON((cap->capabilities &
1116 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)) !=
1117 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS));
1118 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT;
1119 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT;
1120
1121 return ret;
1122}
1123
1124static int v4l_g_input(const struct v4l2_ioctl_ops *ops,
1125 struct file *file, void *fh, void *arg)
1126{
1127 struct video_device *vfd = video_devdata(file);
1128
1129 if (vfd->device_caps & V4L2_CAP_IO_MC) {
1130 *(int *)arg = 0;
1131 return 0;
1132 }
1133
1134 return ops->vidioc_g_input(file, fh, arg);
1135}
1136
1137static int v4l_g_output(const struct v4l2_ioctl_ops *ops,
1138 struct file *file, void *fh, void *arg)
1139{
1140 struct video_device *vfd = video_devdata(file);
1141
1142 if (vfd->device_caps & V4L2_CAP_IO_MC) {
1143 *(int *)arg = 0;
1144 return 0;
1145 }
1146
1147 return ops->vidioc_g_output(file, fh, arg);
1148}
1149
1150static int v4l_s_input(const struct v4l2_ioctl_ops *ops,
1151 struct file *file, void *fh, void *arg)
1152{
1153 struct video_device *vfd = video_devdata(file);
1154 int ret;
1155
1156 ret = v4l_enable_media_source(vfd);
1157 if (ret)
1158 return ret;
1159
1160 if (vfd->device_caps & V4L2_CAP_IO_MC)
1161 return *(int *)arg ? -EINVAL : 0;
1162
1163 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg);
1164}
1165
1166static int v4l_s_output(const struct v4l2_ioctl_ops *ops,
1167 struct file *file, void *fh, void *arg)
1168{
1169 struct video_device *vfd = video_devdata(file);
1170
1171 if (vfd->device_caps & V4L2_CAP_IO_MC)
1172 return *(int *)arg ? -EINVAL : 0;
1173
1174 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg);
1175}
1176
1177static int v4l_g_priority(const struct v4l2_ioctl_ops *ops,
1178 struct file *file, void *fh, void *arg)
1179{
1180 struct video_device *vfd;
1181 u32 *p = arg;
1182
1183 vfd = video_devdata(file);
1184 *p = v4l2_prio_max(vfd->prio);
1185 return 0;
1186}
1187
1188static int v4l_s_priority(const struct v4l2_ioctl_ops *ops,
1189 struct file *file, void *fh, void *arg)
1190{
1191 struct video_device *vfd;
1192 struct v4l2_fh *vfh;
1193 u32 *p = arg;
1194
1195 vfd = video_devdata(file);
1196 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
1197 return -ENOTTY;
1198 vfh = file->private_data;
1199 return v4l2_prio_change(vfd->prio, &vfh->prio, *p);
1200}
1201
1202static int v4l_enuminput(const struct v4l2_ioctl_ops *ops,
1203 struct file *file, void *fh, void *arg)
1204{
1205 struct video_device *vfd = video_devdata(file);
1206 struct v4l2_input *p = arg;
1207
1208 /*
1209 * We set the flags for CAP_DV_TIMINGS &
1210 * CAP_STD here based on ioctl handler provided by the
1211 * driver. If the driver doesn't support these
1212 * for a specific input, it must override these flags.
1213 */
1214 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1215 p->capabilities |= V4L2_IN_CAP_STD;
1216
1217 if (vfd->device_caps & V4L2_CAP_IO_MC) {
1218 if (p->index)
1219 return -EINVAL;
1220 strscpy(p->name, vfd->name, sizeof(p->name));
1221 p->type = V4L2_INPUT_TYPE_CAMERA;
1222 return 0;
1223 }
1224
1225 return ops->vidioc_enum_input(file, fh, p);
1226}
1227
1228static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops,
1229 struct file *file, void *fh, void *arg)
1230{
1231 struct video_device *vfd = video_devdata(file);
1232 struct v4l2_output *p = arg;
1233
1234 /*
1235 * We set the flags for CAP_DV_TIMINGS &
1236 * CAP_STD here based on ioctl handler provided by the
1237 * driver. If the driver doesn't support these
1238 * for a specific output, it must override these flags.
1239 */
1240 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1241 p->capabilities |= V4L2_OUT_CAP_STD;
1242
1243 if (vfd->device_caps & V4L2_CAP_IO_MC) {
1244 if (p->index)
1245 return -EINVAL;
1246 strscpy(p->name, vfd->name, sizeof(p->name));
1247 p->type = V4L2_OUTPUT_TYPE_ANALOG;
1248 return 0;
1249 }
1250
1251 return ops->vidioc_enum_output(file, fh, p);
1252}
1253
1254static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
1255{
1256 const unsigned sz = sizeof(fmt->description);
1257 const char *descr = NULL;
1258 u32 flags = 0;
1259
1260 /*
1261 * We depart from the normal coding style here since the descriptions
1262 * should be aligned so it is easy to see which descriptions will be
1263 * longer than 31 characters (the max length for a description).
1264 * And frankly, this is easier to read anyway.
1265 *
1266 * Note that gcc will use O(log N) comparisons to find the right case.
1267 */
1268 switch (fmt->pixelformat) {
1269 /* Max description length mask: descr = "0123456789012345678901234567890" */
1270 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break;
1271 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break;
1272 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break;
1273 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break;
1274 case V4L2_PIX_FMT_RGBA444: descr = "16-bit RGBA 4-4-4-4"; break;
1275 case V4L2_PIX_FMT_RGBX444: descr = "16-bit RGBX 4-4-4-4"; break;
1276 case V4L2_PIX_FMT_ABGR444: descr = "16-bit ABGR 4-4-4-4"; break;
1277 case V4L2_PIX_FMT_XBGR444: descr = "16-bit XBGR 4-4-4-4"; break;
1278 case V4L2_PIX_FMT_BGRA444: descr = "16-bit BGRA 4-4-4-4"; break;
1279 case V4L2_PIX_FMT_BGRX444: descr = "16-bit BGRX 4-4-4-4"; break;
1280 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break;
1281 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break;
1282 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break;
1283 case V4L2_PIX_FMT_ABGR555: descr = "16-bit ABGR 1-5-5-5"; break;
1284 case V4L2_PIX_FMT_XBGR555: descr = "16-bit XBGR 1-5-5-5"; break;
1285 case V4L2_PIX_FMT_RGBA555: descr = "16-bit RGBA 5-5-5-1"; break;
1286 case V4L2_PIX_FMT_RGBX555: descr = "16-bit RGBX 5-5-5-1"; break;
1287 case V4L2_PIX_FMT_BGRA555: descr = "16-bit BGRA 5-5-5-1"; break;
1288 case V4L2_PIX_FMT_BGRX555: descr = "16-bit BGRX 5-5-5-1"; break;
1289 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break;
1290 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break;
1291 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break;
1292 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break;
1293 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break;
1294 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break;
1295 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break;
1296 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break;
1297 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break;
1298 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break;
1299 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break;
1300 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break;
1301 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break;
1302 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break;
1303 case V4L2_PIX_FMT_BGRA32: descr = "32-bit ABGR 8-8-8-8"; break;
1304 case V4L2_PIX_FMT_BGRX32: descr = "32-bit XBGR 8-8-8-8"; break;
1305 case V4L2_PIX_FMT_RGBA32: descr = "32-bit RGBA 8-8-8-8"; break;
1306 case V4L2_PIX_FMT_RGBX32: descr = "32-bit RGBX 8-8-8-8"; break;
1307 case V4L2_PIX_FMT_RGBX1010102: descr = "32-bit RGBX 10-10-10-2"; break;
1308 case V4L2_PIX_FMT_RGBA1010102: descr = "32-bit RGBA 10-10-10-2"; break;
1309 case V4L2_PIX_FMT_ARGB2101010: descr = "32-bit ARGB 2-10-10-10"; break;
1310 case V4L2_PIX_FMT_BGR48: descr = "48-bit BGR 16-16-16"; break;
1311 case V4L2_PIX_FMT_RGB48: descr = "48-bit RGB 16-16-16"; break;
1312 case V4L2_PIX_FMT_BGR48_12: descr = "12-bit Depth BGR"; break;
1313 case V4L2_PIX_FMT_ABGR64_12: descr = "12-bit Depth BGRA"; break;
1314 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break;
1315 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break;
1316 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break;
1317 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break;
1318 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break;
1319 case V4L2_PIX_FMT_Y012: descr = "12-bit Greyscale (bits 15-4)"; break;
1320 case V4L2_PIX_FMT_Y14: descr = "14-bit Greyscale"; break;
1321 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break;
1322 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break;
1323 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break;
1324 case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break;
1325 case V4L2_PIX_FMT_IPU3_Y10: descr = "10-bit greyscale (IPU3 Packed)"; break;
1326 case V4L2_PIX_FMT_Y12P: descr = "12-bit Greyscale (MIPI Packed)"; break;
1327 case V4L2_PIX_FMT_Y14P: descr = "14-bit Greyscale (MIPI Packed)"; break;
1328 case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break;
1329 case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break;
1330 case V4L2_PIX_FMT_Y16I: descr = "Interleaved 16-bit Greyscale"; break;
1331 case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break;
1332 case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break;
1333 case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break;
1334 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break;
1335 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break;
1336 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break;
1337 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break;
1338 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break;
1339 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break;
1340 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break;
1341 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break;
1342 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break;
1343 case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break;
1344 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break;
1345 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break;
1346 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break;
1347 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break;
1348 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break;
1349 case V4L2_PIX_FMT_YUV24: descr = "24-bit YUV 4:4:4 8-8-8"; break;
1350 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break;
1351 case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break;
1352 case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break;
1353 case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break;
1354 case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break;
1355 case V4L2_PIX_FMT_YUVA32: descr = "32-bit YUVA 8-8-8-8"; break;
1356 case V4L2_PIX_FMT_YUVX32: descr = "32-bit YUVX 8-8-8-8"; break;
1357 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break;
1358 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break;
1359 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break;
1360 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break;
1361 case V4L2_PIX_FMT_YUV48_12: descr = "12-bit YUV 4:4:4 Packed"; break;
1362 case V4L2_PIX_FMT_NV12: descr = "Y/UV 4:2:0"; break;
1363 case V4L2_PIX_FMT_NV21: descr = "Y/VU 4:2:0"; break;
1364 case V4L2_PIX_FMT_NV16: descr = "Y/UV 4:2:2"; break;
1365 case V4L2_PIX_FMT_NV61: descr = "Y/VU 4:2:2"; break;
1366 case V4L2_PIX_FMT_NV24: descr = "Y/UV 4:4:4"; break;
1367 case V4L2_PIX_FMT_NV42: descr = "Y/VU 4:4:4"; break;
1368 case V4L2_PIX_FMT_P010: descr = "10-bit Y/UV 4:2:0"; break;
1369 case V4L2_PIX_FMT_P012: descr = "12-bit Y/UV 4:2:0"; break;
1370 case V4L2_PIX_FMT_NV12_4L4: descr = "Y/UV 4:2:0 (4x4 Linear)"; break;
1371 case V4L2_PIX_FMT_NV12_16L16: descr = "Y/UV 4:2:0 (16x16 Linear)"; break;
1372 case V4L2_PIX_FMT_NV12_32L32: descr = "Y/UV 4:2:0 (32x32 Linear)"; break;
1373 case V4L2_PIX_FMT_NV15_4L4: descr = "10-bit Y/UV 4:2:0 (4x4 Linear)"; break;
1374 case V4L2_PIX_FMT_P010_4L4: descr = "10-bit Y/UV 4:2:0 (4x4 Linear)"; break;
1375 case V4L2_PIX_FMT_NV12M: descr = "Y/UV 4:2:0 (N-C)"; break;
1376 case V4L2_PIX_FMT_NV21M: descr = "Y/VU 4:2:0 (N-C)"; break;
1377 case V4L2_PIX_FMT_NV16M: descr = "Y/UV 4:2:2 (N-C)"; break;
1378 case V4L2_PIX_FMT_NV61M: descr = "Y/VU 4:2:2 (N-C)"; break;
1379 case V4L2_PIX_FMT_NV12MT: descr = "Y/UV 4:2:0 (64x32 MB, N-C)"; break;
1380 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/UV 4:2:0 (16x16 MB, N-C)"; break;
1381 case V4L2_PIX_FMT_P012M: descr = "12-bit Y/UV 4:2:0 (N-C)"; break;
1382 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break;
1383 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break;
1384 case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break;
1385 case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break;
1386 case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break;
1387 case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break;
1388 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break;
1389 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break;
1390 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break;
1391 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break;
1392 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break;
1393 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break;
1394 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break;
1395 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break;
1396 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break;
1397 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break;
1398 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break;
1399 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break;
1400 case V4L2_PIX_FMT_IPU3_SBGGR10: descr = "10-bit bayer BGGR IPU3 Packed"; break;
1401 case V4L2_PIX_FMT_IPU3_SGBRG10: descr = "10-bit bayer GBRG IPU3 Packed"; break;
1402 case V4L2_PIX_FMT_IPU3_SGRBG10: descr = "10-bit bayer GRBG IPU3 Packed"; break;
1403 case V4L2_PIX_FMT_IPU3_SRGGB10: descr = "10-bit bayer RGGB IPU3 Packed"; break;
1404 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break;
1405 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break;
1406 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break;
1407 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break;
1408 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break;
1409 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break;
1410 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break;
1411 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break;
1412 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break;
1413 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break;
1414 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break;
1415 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break;
1416 case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break;
1417 case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break;
1418 case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break;
1419 case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break;
1420 case V4L2_PIX_FMT_SBGGR14: descr = "14-bit Bayer BGBG/GRGR"; break;
1421 case V4L2_PIX_FMT_SGBRG14: descr = "14-bit Bayer GBGB/RGRG"; break;
1422 case V4L2_PIX_FMT_SGRBG14: descr = "14-bit Bayer GRGR/BGBG"; break;
1423 case V4L2_PIX_FMT_SRGGB14: descr = "14-bit Bayer RGRG/GBGB"; break;
1424 case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break;
1425 case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break;
1426 case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break;
1427 case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break;
1428 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break;
1429 case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break;
1430 case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break;
1431 case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break;
1432 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break;
1433 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break;
1434 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break;
1435 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break;
1436 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break;
1437 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break;
1438 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break;
1439 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break;
1440 case V4L2_PIX_FMT_MM21: descr = "Mediatek 8-bit Block Format"; break;
1441 case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break;
1442 case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break;
1443 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break;
1444 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break;
1445 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break;
1446 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break;
1447 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break;
1448 case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break;
1449 case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break;
1450 case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break;
1451 case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit Signed Deltas"; break;
1452 case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit Signed Deltas"; break;
1453 case V4L2_TCH_FMT_TU16: descr = "16-bit Unsigned Touch Data"; break;
1454 case V4L2_TCH_FMT_TU08: descr = "8-bit Unsigned Touch Data"; break;
1455 case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break;
1456 case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break;
1457 case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break;
1458 case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break;
1459 case V4L2_META_FMT_VIVID: descr = "Vivid Metadata"; break;
1460 case V4L2_META_FMT_RK_ISP1_PARAMS: descr = "Rockchip ISP1 3A Parameters"; break;
1461 case V4L2_META_FMT_RK_ISP1_STAT_3A: descr = "Rockchip ISP1 3A Statistics"; break;
1462 case V4L2_META_FMT_RK_ISP1_EXT_PARAMS: descr = "Rockchip ISP1 Ext 3A Params"; break;
1463 case V4L2_PIX_FMT_NV12_8L128: descr = "NV12 (8x128 Linear)"; break;
1464 case V4L2_PIX_FMT_NV12M_8L128: descr = "NV12M (8x128 Linear)"; break;
1465 case V4L2_PIX_FMT_NV12_10BE_8L128: descr = "10-bit NV12 (8x128 Linear, BE)"; break;
1466 case V4L2_PIX_FMT_NV12M_10BE_8L128: descr = "10-bit NV12M (8x128 Linear, BE)"; break;
1467 case V4L2_PIX_FMT_Y210: descr = "10-bit YUYV Packed"; break;
1468 case V4L2_PIX_FMT_Y212: descr = "12-bit YUYV Packed"; break;
1469 case V4L2_PIX_FMT_Y216: descr = "16-bit YUYV Packed"; break;
1470 case V4L2_META_FMT_RPI_BE_CFG: descr = "RPi PiSP BE Config format"; break;
1471 case V4L2_META_FMT_RPI_FE_CFG: descr = "RPi PiSP FE Config format"; break;
1472 case V4L2_META_FMT_RPI_FE_STATS: descr = "RPi PiSP FE Statistics format"; break;
1473 case V4L2_META_FMT_GENERIC_8: descr = "8-bit Generic Metadata"; break;
1474 case V4L2_META_FMT_GENERIC_CSI2_10: descr = "8-bit Generic Meta, 10b CSI-2"; break;
1475 case V4L2_META_FMT_GENERIC_CSI2_12: descr = "8-bit Generic Meta, 12b CSI-2"; break;
1476 case V4L2_META_FMT_GENERIC_CSI2_14: descr = "8-bit Generic Meta, 14b CSI-2"; break;
1477 case V4L2_META_FMT_GENERIC_CSI2_16: descr = "8-bit Generic Meta, 16b CSI-2"; break;
1478 case V4L2_META_FMT_GENERIC_CSI2_20: descr = "8-bit Generic Meta, 20b CSI-2"; break;
1479 case V4L2_META_FMT_GENERIC_CSI2_24: descr = "8-bit Generic Meta, 24b CSI-2"; break;
1480
1481 default:
1482 /* Compressed formats */
1483 flags = V4L2_FMT_FLAG_COMPRESSED;
1484 switch (fmt->pixelformat) {
1485 /* Max description length mask: descr = "0123456789012345678901234567890" */
1486 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break;
1487 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break;
1488 case V4L2_PIX_FMT_DV: descr = "1394"; break;
1489 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break;
1490 case V4L2_PIX_FMT_H264: descr = "H.264"; break;
1491 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break;
1492 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break;
1493 case V4L2_PIX_FMT_H264_SLICE: descr = "H.264 Parsed Slice Data"; break;
1494 case V4L2_PIX_FMT_H263: descr = "H.263"; break;
1495 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break;
1496 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break;
1497 case V4L2_PIX_FMT_MPEG2_SLICE: descr = "MPEG-2 Parsed Slice Data"; break;
1498 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 Part 2 ES"; break;
1499 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break;
1500 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break;
1501 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break;
1502 case V4L2_PIX_FMT_VP8: descr = "VP8"; break;
1503 case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break;
1504 case V4L2_PIX_FMT_VP9: descr = "VP9"; break;
1505 case V4L2_PIX_FMT_VP9_FRAME: descr = "VP9 Frame"; break;
1506 case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */
1507 case V4L2_PIX_FMT_HEVC_SLICE: descr = "HEVC Parsed Slice Data"; break;
1508 case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */
1509 case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */
1510 case V4L2_PIX_FMT_SPK: descr = "Sorenson Spark"; break;
1511 case V4L2_PIX_FMT_RV30: descr = "RealVideo 8"; break;
1512 case V4L2_PIX_FMT_RV40: descr = "RealVideo 9 & 10"; break;
1513 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break;
1514 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break;
1515 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break;
1516 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break;
1517 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break;
1518 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break;
1519 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break;
1520 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break;
1521 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break;
1522 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break;
1523 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break;
1524 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break;
1525 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break;
1526 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break;
1527 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break;
1528 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break;
1529 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break;
1530 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break;
1531 case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break;
1532 case V4L2_PIX_FMT_QC08C: descr = "QCOM Compressed 8-bit Format"; break;
1533 case V4L2_PIX_FMT_QC10C: descr = "QCOM Compressed 10-bit Format"; break;
1534 case V4L2_PIX_FMT_AJPG: descr = "Aspeed JPEG"; break;
1535 case V4L2_PIX_FMT_AV1_FRAME: descr = "AV1 Frame"; break;
1536 case V4L2_PIX_FMT_MT2110T: descr = "Mediatek 10bit Tile Mode"; break;
1537 case V4L2_PIX_FMT_MT2110R: descr = "Mediatek 10bit Raster Mode"; break;
1538 case V4L2_PIX_FMT_HEXTILE: descr = "Hextile Compressed Format"; break;
1539 case V4L2_PIX_FMT_PISP_COMP1_RGGB: descr = "PiSP 8b RGRG/GBGB mode1 compr"; break;
1540 case V4L2_PIX_FMT_PISP_COMP1_GRBG: descr = "PiSP 8b GRGR/BGBG mode1 compr"; break;
1541 case V4L2_PIX_FMT_PISP_COMP1_GBRG: descr = "PiSP 8b GBGB/RGRG mode1 compr"; break;
1542 case V4L2_PIX_FMT_PISP_COMP1_BGGR: descr = "PiSP 8b BGBG/GRGR mode1 compr"; break;
1543 case V4L2_PIX_FMT_PISP_COMP1_MONO: descr = "PiSP 8b monochrome mode1 compr"; break;
1544 case V4L2_PIX_FMT_PISP_COMP2_RGGB: descr = "PiSP 8b RGRG/GBGB mode2 compr"; break;
1545 case V4L2_PIX_FMT_PISP_COMP2_GRBG: descr = "PiSP 8b GRGR/BGBG mode2 compr"; break;
1546 case V4L2_PIX_FMT_PISP_COMP2_GBRG: descr = "PiSP 8b GBGB/RGRG mode2 compr"; break;
1547 case V4L2_PIX_FMT_PISP_COMP2_BGGR: descr = "PiSP 8b BGBG/GRGR mode2 compr"; break;
1548 case V4L2_PIX_FMT_PISP_COMP2_MONO: descr = "PiSP 8b monochrome mode2 compr"; break;
1549 default:
1550 if (fmt->description[0])
1551 return;
1552 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat);
1553 flags = 0;
1554 snprintf(fmt->description, sz, "%p4cc",
1555 &fmt->pixelformat);
1556 break;
1557 }
1558 }
1559
1560 if (fmt->type == V4L2_BUF_TYPE_META_CAPTURE) {
1561 switch (fmt->pixelformat) {
1562 case V4L2_META_FMT_GENERIC_8:
1563 case V4L2_META_FMT_GENERIC_CSI2_10:
1564 case V4L2_META_FMT_GENERIC_CSI2_12:
1565 case V4L2_META_FMT_GENERIC_CSI2_14:
1566 case V4L2_META_FMT_GENERIC_CSI2_16:
1567 case V4L2_META_FMT_GENERIC_CSI2_20:
1568 case V4L2_META_FMT_GENERIC_CSI2_24:
1569 fmt->flags |= V4L2_FMT_FLAG_META_LINE_BASED;
1570 break;
1571 default:
1572 fmt->flags &= ~V4L2_FMT_FLAG_META_LINE_BASED;
1573 }
1574 }
1575
1576 if (descr)
1577 WARN_ON(strscpy(fmt->description, descr, sz) < 0);
1578 fmt->flags |= flags;
1579}
1580
1581static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
1582 struct file *file, void *fh, void *arg)
1583{
1584 struct video_device *vdev = video_devdata(file);
1585 struct v4l2_fmtdesc *p = arg;
1586 int ret = check_fmt(file, p->type);
1587 u32 mbus_code;
1588 u32 cap_mask;
1589
1590 if (ret)
1591 return ret;
1592 ret = -EINVAL;
1593
1594 if (!(vdev->device_caps & V4L2_CAP_IO_MC))
1595 p->mbus_code = 0;
1596
1597 mbus_code = p->mbus_code;
1598 memset_after(p, 0, type);
1599 p->mbus_code = mbus_code;
1600
1601 switch (p->type) {
1602 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1603 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1604 cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE |
1605 V4L2_CAP_VIDEO_M2M_MPLANE;
1606 if (!!(vdev->device_caps & cap_mask) !=
1607 (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE))
1608 break;
1609
1610 if (unlikely(!ops->vidioc_enum_fmt_vid_cap))
1611 break;
1612 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
1613 break;
1614 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1615 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay))
1616 break;
1617 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
1618 break;
1619 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1620 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1621 cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE |
1622 V4L2_CAP_VIDEO_M2M_MPLANE;
1623 if (!!(vdev->device_caps & cap_mask) !=
1624 (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE))
1625 break;
1626
1627 if (unlikely(!ops->vidioc_enum_fmt_vid_out))
1628 break;
1629 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg);
1630 break;
1631 case V4L2_BUF_TYPE_SDR_CAPTURE:
1632 if (unlikely(!ops->vidioc_enum_fmt_sdr_cap))
1633 break;
1634 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg);
1635 break;
1636 case V4L2_BUF_TYPE_SDR_OUTPUT:
1637 if (unlikely(!ops->vidioc_enum_fmt_sdr_out))
1638 break;
1639 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg);
1640 break;
1641 case V4L2_BUF_TYPE_META_CAPTURE:
1642 if (unlikely(!ops->vidioc_enum_fmt_meta_cap))
1643 break;
1644 ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg);
1645 break;
1646 case V4L2_BUF_TYPE_META_OUTPUT:
1647 if (unlikely(!ops->vidioc_enum_fmt_meta_out))
1648 break;
1649 ret = ops->vidioc_enum_fmt_meta_out(file, fh, arg);
1650 break;
1651 }
1652 if (ret == 0)
1653 v4l_fill_fmtdesc(p);
1654 return ret;
1655}
1656
1657static void v4l_pix_format_touch(struct v4l2_pix_format *p)
1658{
1659 /*
1660 * The v4l2_pix_format structure contains fields that make no sense for
1661 * touch. Set them to default values in this case.
1662 */
1663
1664 p->field = V4L2_FIELD_NONE;
1665 p->colorspace = V4L2_COLORSPACE_RAW;
1666 p->flags = 0;
1667 p->ycbcr_enc = 0;
1668 p->quantization = 0;
1669 p->xfer_func = 0;
1670}
1671
1672static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
1673 struct file *file, void *fh, void *arg)
1674{
1675 struct v4l2_format *p = arg;
1676 struct video_device *vfd = video_devdata(file);
1677 int ret = check_fmt(file, p->type);
1678
1679 if (ret)
1680 return ret;
1681
1682 memset(&p->fmt, 0, sizeof(p->fmt));
1683
1684 switch (p->type) {
1685 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1686 if (unlikely(!ops->vidioc_g_fmt_vid_cap))
1687 break;
1688 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1689 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg);
1690 /* just in case the driver zeroed it again */
1691 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1692 if (vfd->vfl_type == VFL_TYPE_TOUCH)
1693 v4l_pix_format_touch(&p->fmt.pix);
1694 return ret;
1695 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1696 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
1697 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1698 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
1699 case V4L2_BUF_TYPE_VBI_CAPTURE:
1700 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
1701 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1702 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
1703 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1704 if (unlikely(!ops->vidioc_g_fmt_vid_out))
1705 break;
1706 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1707 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg);
1708 /* just in case the driver zeroed it again */
1709 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1710 return ret;
1711 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1712 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
1713 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1714 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
1715 case V4L2_BUF_TYPE_VBI_OUTPUT:
1716 return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
1717 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1718 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
1719 case V4L2_BUF_TYPE_SDR_CAPTURE:
1720 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg);
1721 case V4L2_BUF_TYPE_SDR_OUTPUT:
1722 return ops->vidioc_g_fmt_sdr_out(file, fh, arg);
1723 case V4L2_BUF_TYPE_META_CAPTURE:
1724 return ops->vidioc_g_fmt_meta_cap(file, fh, arg);
1725 case V4L2_BUF_TYPE_META_OUTPUT:
1726 return ops->vidioc_g_fmt_meta_out(file, fh, arg);
1727 }
1728 return -EINVAL;
1729}
1730
1731static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
1732 struct file *file, void *fh, void *arg)
1733{
1734 struct v4l2_format *p = arg;
1735 struct video_device *vfd = video_devdata(file);
1736 int ret = check_fmt(file, p->type);
1737 unsigned int i;
1738
1739 if (ret)
1740 return ret;
1741
1742 ret = v4l_enable_media_source(vfd);
1743 if (ret)
1744 return ret;
1745 v4l_sanitize_format(p);
1746
1747 switch (p->type) {
1748 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1749 if (unlikely(!ops->vidioc_s_fmt_vid_cap))
1750 break;
1751 memset_after(p, 0, fmt.pix);
1752 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg);
1753 /* just in case the driver zeroed it again */
1754 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1755 if (vfd->vfl_type == VFL_TYPE_TOUCH)
1756 v4l_pix_format_touch(&p->fmt.pix);
1757 return ret;
1758 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1759 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane))
1760 break;
1761 memset_after(p, 0, fmt.pix_mp.xfer_func);
1762 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1763 memset_after(&p->fmt.pix_mp.plane_fmt[i],
1764 0, bytesperline);
1765 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
1766 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1767 if (unlikely(!ops->vidioc_s_fmt_vid_overlay))
1768 break;
1769 memset_after(p, 0, fmt.win);
1770 p->fmt.win.clips = NULL;
1771 p->fmt.win.clipcount = 0;
1772 p->fmt.win.bitmap = NULL;
1773 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
1774 case V4L2_BUF_TYPE_VBI_CAPTURE:
1775 if (unlikely(!ops->vidioc_s_fmt_vbi_cap))
1776 break;
1777 memset_after(p, 0, fmt.vbi.flags);
1778 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
1779 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1780 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap))
1781 break;
1782 memset_after(p, 0, fmt.sliced.io_size);
1783 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
1784 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1785 if (unlikely(!ops->vidioc_s_fmt_vid_out))
1786 break;
1787 memset_after(p, 0, fmt.pix);
1788 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg);
1789 /* just in case the driver zeroed it again */
1790 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1791 return ret;
1792 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1793 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane))
1794 break;
1795 memset_after(p, 0, fmt.pix_mp.xfer_func);
1796 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1797 memset_after(&p->fmt.pix_mp.plane_fmt[i],
1798 0, bytesperline);
1799 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
1800 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1801 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay))
1802 break;
1803 memset_after(p, 0, fmt.win);
1804 p->fmt.win.clips = NULL;
1805 p->fmt.win.clipcount = 0;
1806 p->fmt.win.bitmap = NULL;
1807 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
1808 case V4L2_BUF_TYPE_VBI_OUTPUT:
1809 if (unlikely(!ops->vidioc_s_fmt_vbi_out))
1810 break;
1811 memset_after(p, 0, fmt.vbi.flags);
1812 return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
1813 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1814 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out))
1815 break;
1816 memset_after(p, 0, fmt.sliced.io_size);
1817 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
1818 case V4L2_BUF_TYPE_SDR_CAPTURE:
1819 if (unlikely(!ops->vidioc_s_fmt_sdr_cap))
1820 break;
1821 memset_after(p, 0, fmt.sdr.buffersize);
1822 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg);
1823 case V4L2_BUF_TYPE_SDR_OUTPUT:
1824 if (unlikely(!ops->vidioc_s_fmt_sdr_out))
1825 break;
1826 memset_after(p, 0, fmt.sdr.buffersize);
1827 return ops->vidioc_s_fmt_sdr_out(file, fh, arg);
1828 case V4L2_BUF_TYPE_META_CAPTURE:
1829 if (unlikely(!ops->vidioc_s_fmt_meta_cap))
1830 break;
1831 memset_after(p, 0, fmt.meta);
1832 return ops->vidioc_s_fmt_meta_cap(file, fh, arg);
1833 case V4L2_BUF_TYPE_META_OUTPUT:
1834 if (unlikely(!ops->vidioc_s_fmt_meta_out))
1835 break;
1836 memset_after(p, 0, fmt.meta);
1837 return ops->vidioc_s_fmt_meta_out(file, fh, arg);
1838 }
1839 return -EINVAL;
1840}
1841
1842static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
1843 struct file *file, void *fh, void *arg)
1844{
1845 struct v4l2_format *p = arg;
1846 struct video_device *vfd = video_devdata(file);
1847 int ret = check_fmt(file, p->type);
1848 unsigned int i;
1849
1850 if (ret)
1851 return ret;
1852
1853 v4l_sanitize_format(p);
1854
1855 switch (p->type) {
1856 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1857 if (unlikely(!ops->vidioc_try_fmt_vid_cap))
1858 break;
1859 memset_after(p, 0, fmt.pix);
1860 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg);
1861 /* just in case the driver zeroed it again */
1862 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1863 if (vfd->vfl_type == VFL_TYPE_TOUCH)
1864 v4l_pix_format_touch(&p->fmt.pix);
1865 return ret;
1866 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1867 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane))
1868 break;
1869 memset_after(p, 0, fmt.pix_mp.xfer_func);
1870 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1871 memset_after(&p->fmt.pix_mp.plane_fmt[i],
1872 0, bytesperline);
1873 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
1874 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1875 if (unlikely(!ops->vidioc_try_fmt_vid_overlay))
1876 break;
1877 memset_after(p, 0, fmt.win);
1878 p->fmt.win.clips = NULL;
1879 p->fmt.win.clipcount = 0;
1880 p->fmt.win.bitmap = NULL;
1881 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
1882 case V4L2_BUF_TYPE_VBI_CAPTURE:
1883 if (unlikely(!ops->vidioc_try_fmt_vbi_cap))
1884 break;
1885 memset_after(p, 0, fmt.vbi.flags);
1886 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
1887 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1888 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap))
1889 break;
1890 memset_after(p, 0, fmt.sliced.io_size);
1891 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
1892 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1893 if (unlikely(!ops->vidioc_try_fmt_vid_out))
1894 break;
1895 memset_after(p, 0, fmt.pix);
1896 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg);
1897 /* just in case the driver zeroed it again */
1898 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1899 return ret;
1900 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1901 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane))
1902 break;
1903 memset_after(p, 0, fmt.pix_mp.xfer_func);
1904 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1905 memset_after(&p->fmt.pix_mp.plane_fmt[i],
1906 0, bytesperline);
1907 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
1908 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1909 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay))
1910 break;
1911 memset_after(p, 0, fmt.win);
1912 p->fmt.win.clips = NULL;
1913 p->fmt.win.clipcount = 0;
1914 p->fmt.win.bitmap = NULL;
1915 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
1916 case V4L2_BUF_TYPE_VBI_OUTPUT:
1917 if (unlikely(!ops->vidioc_try_fmt_vbi_out))
1918 break;
1919 memset_after(p, 0, fmt.vbi.flags);
1920 return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
1921 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1922 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out))
1923 break;
1924 memset_after(p, 0, fmt.sliced.io_size);
1925 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
1926 case V4L2_BUF_TYPE_SDR_CAPTURE:
1927 if (unlikely(!ops->vidioc_try_fmt_sdr_cap))
1928 break;
1929 memset_after(p, 0, fmt.sdr.buffersize);
1930 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg);
1931 case V4L2_BUF_TYPE_SDR_OUTPUT:
1932 if (unlikely(!ops->vidioc_try_fmt_sdr_out))
1933 break;
1934 memset_after(p, 0, fmt.sdr.buffersize);
1935 return ops->vidioc_try_fmt_sdr_out(file, fh, arg);
1936 case V4L2_BUF_TYPE_META_CAPTURE:
1937 if (unlikely(!ops->vidioc_try_fmt_meta_cap))
1938 break;
1939 memset_after(p, 0, fmt.meta);
1940 return ops->vidioc_try_fmt_meta_cap(file, fh, arg);
1941 case V4L2_BUF_TYPE_META_OUTPUT:
1942 if (unlikely(!ops->vidioc_try_fmt_meta_out))
1943 break;
1944 memset_after(p, 0, fmt.meta);
1945 return ops->vidioc_try_fmt_meta_out(file, fh, arg);
1946 }
1947 return -EINVAL;
1948}
1949
1950static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
1951 struct file *file, void *fh, void *arg)
1952{
1953 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
1954}
1955
1956static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
1957 struct file *file, void *fh, void *arg)
1958{
1959 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
1960}
1961
1962static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,
1963 struct file *file, void *fh, void *arg)
1964{
1965 struct video_device *vfd = video_devdata(file);
1966 struct v4l2_tuner *p = arg;
1967 int err;
1968
1969 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1970 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1971 err = ops->vidioc_g_tuner(file, fh, p);
1972 if (!err)
1973 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1974 return err;
1975}
1976
1977static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
1978 struct file *file, void *fh, void *arg)
1979{
1980 struct video_device *vfd = video_devdata(file);
1981 struct v4l2_tuner *p = arg;
1982 int ret;
1983
1984 ret = v4l_enable_media_source(vfd);
1985 if (ret)
1986 return ret;
1987 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1988 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1989 return ops->vidioc_s_tuner(file, fh, p);
1990}
1991
1992static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,
1993 struct file *file, void *fh, void *arg)
1994{
1995 struct video_device *vfd = video_devdata(file);
1996 struct v4l2_modulator *p = arg;
1997 int err;
1998
1999 if (vfd->vfl_type == VFL_TYPE_RADIO)
2000 p->type = V4L2_TUNER_RADIO;
2001
2002 err = ops->vidioc_g_modulator(file, fh, p);
2003 if (!err)
2004 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
2005 return err;
2006}
2007
2008static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops,
2009 struct file *file, void *fh, void *arg)
2010{
2011 struct video_device *vfd = video_devdata(file);
2012 struct v4l2_modulator *p = arg;
2013
2014 if (vfd->vfl_type == VFL_TYPE_RADIO)
2015 p->type = V4L2_TUNER_RADIO;
2016
2017 return ops->vidioc_s_modulator(file, fh, p);
2018}
2019
2020static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
2021 struct file *file, void *fh, void *arg)
2022{
2023 struct video_device *vfd = video_devdata(file);
2024 struct v4l2_frequency *p = arg;
2025
2026 if (vfd->vfl_type == VFL_TYPE_SDR)
2027 p->type = V4L2_TUNER_SDR;
2028 else
2029 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2030 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2031 return ops->vidioc_g_frequency(file, fh, p);
2032}
2033
2034static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
2035 struct file *file, void *fh, void *arg)
2036{
2037 struct video_device *vfd = video_devdata(file);
2038 const struct v4l2_frequency *p = arg;
2039 enum v4l2_tuner_type type;
2040 int ret;
2041
2042 ret = v4l_enable_media_source(vfd);
2043 if (ret)
2044 return ret;
2045 if (vfd->vfl_type == VFL_TYPE_SDR) {
2046 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)
2047 return -EINVAL;
2048 } else {
2049 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2050 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2051 if (type != p->type)
2052 return -EINVAL;
2053 }
2054 return ops->vidioc_s_frequency(file, fh, p);
2055}
2056
2057static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
2058 struct file *file, void *fh, void *arg)
2059{
2060 struct video_device *vfd = video_devdata(file);
2061 struct v4l2_standard *p = arg;
2062
2063 return v4l_video_std_enumstd(p, vfd->tvnorms);
2064}
2065
2066static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
2067 struct file *file, void *fh, void *arg)
2068{
2069 struct video_device *vfd = video_devdata(file);
2070 v4l2_std_id id = *(v4l2_std_id *)arg, norm;
2071 int ret;
2072
2073 ret = v4l_enable_media_source(vfd);
2074 if (ret)
2075 return ret;
2076 norm = id & vfd->tvnorms;
2077 if (vfd->tvnorms && !norm) /* Check if std is supported */
2078 return -EINVAL;
2079
2080 /* Calls the specific handler */
2081 return ops->vidioc_s_std(file, fh, norm);
2082}
2083
2084static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
2085 struct file *file, void *fh, void *arg)
2086{
2087 struct video_device *vfd = video_devdata(file);
2088 v4l2_std_id *p = arg;
2089 int ret;
2090
2091 ret = v4l_enable_media_source(vfd);
2092 if (ret)
2093 return ret;
2094 /*
2095 * If no signal is detected, then the driver should return
2096 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with
2097 * any standards that do not apply removed.
2098 *
2099 * This means that tuners, audio and video decoders can join
2100 * their efforts to improve the standards detection.
2101 */
2102 *p = vfd->tvnorms;
2103 return ops->vidioc_querystd(file, fh, arg);
2104}
2105
2106static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
2107 struct file *file, void *fh, void *arg)
2108{
2109 struct video_device *vfd = video_devdata(file);
2110 struct v4l2_hw_freq_seek *p = arg;
2111 enum v4l2_tuner_type type;
2112 int ret;
2113
2114 ret = v4l_enable_media_source(vfd);
2115 if (ret)
2116 return ret;
2117 /* s_hw_freq_seek is not supported for SDR for now */
2118 if (vfd->vfl_type == VFL_TYPE_SDR)
2119 return -EINVAL;
2120
2121 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2122 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2123 if (p->type != type)
2124 return -EINVAL;
2125 return ops->vidioc_s_hw_freq_seek(file, fh, p);
2126}
2127
2128static int v4l_s_fbuf(const struct v4l2_ioctl_ops *ops,
2129 struct file *file, void *fh, void *arg)
2130{
2131 struct v4l2_framebuffer *p = arg;
2132
2133 p->base = NULL;
2134 return ops->vidioc_s_fbuf(file, fh, p);
2135}
2136
2137static int v4l_overlay(const struct v4l2_ioctl_ops *ops,
2138 struct file *file, void *fh, void *arg)
2139{
2140 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg);
2141}
2142
2143static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,
2144 struct file *file, void *fh, void *arg)
2145{
2146 struct video_device *vfd = video_devdata(file);
2147 struct v4l2_requestbuffers *p = arg;
2148 int ret = check_fmt(file, p->type);
2149
2150 if (ret)
2151 return ret;
2152
2153 memset_after(p, 0, flags);
2154
2155 p->capabilities = 0;
2156 if (is_valid_ioctl(vfd, VIDIOC_REMOVE_BUFS))
2157 p->capabilities = V4L2_BUF_CAP_SUPPORTS_REMOVE_BUFS;
2158
2159 return ops->vidioc_reqbufs(file, fh, p);
2160}
2161
2162static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,
2163 struct file *file, void *fh, void *arg)
2164{
2165 struct v4l2_buffer *p = arg;
2166 int ret = check_fmt(file, p->type);
2167
2168 return ret ? ret : ops->vidioc_querybuf(file, fh, p);
2169}
2170
2171static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,
2172 struct file *file, void *fh, void *arg)
2173{
2174 struct v4l2_buffer *p = arg;
2175 int ret = check_fmt(file, p->type);
2176
2177 return ret ? ret : ops->vidioc_qbuf(file, fh, p);
2178}
2179
2180static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,
2181 struct file *file, void *fh, void *arg)
2182{
2183 struct v4l2_buffer *p = arg;
2184 int ret = check_fmt(file, p->type);
2185
2186 return ret ? ret : ops->vidioc_dqbuf(file, fh, p);
2187}
2188
2189static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
2190 struct file *file, void *fh, void *arg)
2191{
2192 struct video_device *vfd = video_devdata(file);
2193 struct v4l2_create_buffers *create = arg;
2194 int ret = check_fmt(file, create->format.type);
2195
2196 if (ret)
2197 return ret;
2198
2199 memset_after(create, 0, flags);
2200
2201 v4l_sanitize_format(&create->format);
2202
2203 create->capabilities = 0;
2204 if (is_valid_ioctl(vfd, VIDIOC_REMOVE_BUFS))
2205 create->capabilities = V4L2_BUF_CAP_SUPPORTS_REMOVE_BUFS;
2206
2207 ret = ops->vidioc_create_bufs(file, fh, create);
2208
2209 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
2210 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
2211 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
2212
2213 return ret;
2214}
2215
2216static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
2217 struct file *file, void *fh, void *arg)
2218{
2219 struct v4l2_buffer *b = arg;
2220 int ret = check_fmt(file, b->type);
2221
2222 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
2223}
2224
2225static int v4l_remove_bufs(const struct v4l2_ioctl_ops *ops,
2226 struct file *file, void *fh, void *arg)
2227{
2228 struct v4l2_remove_buffers *remove = arg;
2229
2230 if (ops->vidioc_remove_bufs)
2231 return ops->vidioc_remove_bufs(file, fh, remove);
2232
2233 return -ENOTTY;
2234}
2235
2236static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
2237 struct file *file, void *fh, void *arg)
2238{
2239 struct video_device *vfd = video_devdata(file);
2240 struct v4l2_streamparm *p = arg;
2241 v4l2_std_id std;
2242 int ret = check_fmt(file, p->type);
2243
2244 if (ret)
2245 return ret;
2246 if (ops->vidioc_g_parm)
2247 return ops->vidioc_g_parm(file, fh, p);
2248 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
2249 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2250 return -EINVAL;
2251 if (vfd->device_caps & V4L2_CAP_READWRITE)
2252 p->parm.capture.readbuffers = 2;
2253 ret = ops->vidioc_g_std(file, fh, &std);
2254 if (ret == 0)
2255 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe);
2256 return ret;
2257}
2258
2259static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
2260 struct file *file, void *fh, void *arg)
2261{
2262 struct v4l2_streamparm *p = arg;
2263 int ret = check_fmt(file, p->type);
2264
2265 if (ret)
2266 return ret;
2267
2268 /* Note: extendedmode is never used in drivers */
2269 if (V4L2_TYPE_IS_OUTPUT(p->type)) {
2270 memset(p->parm.output.reserved, 0,
2271 sizeof(p->parm.output.reserved));
2272 p->parm.output.extendedmode = 0;
2273 p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY;
2274 } else {
2275 memset(p->parm.capture.reserved, 0,
2276 sizeof(p->parm.capture.reserved));
2277 p->parm.capture.extendedmode = 0;
2278 p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY;
2279 }
2280 return ops->vidioc_s_parm(file, fh, p);
2281}
2282
2283static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,
2284 struct file *file, void *fh, void *arg)
2285{
2286 struct video_device *vfd = video_devdata(file);
2287 struct v4l2_queryctrl *p = arg;
2288 struct v4l2_fh *vfh =
2289 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2290
2291 if (vfh && vfh->ctrl_handler)
2292 return v4l2_queryctrl(vfh->ctrl_handler, p);
2293 if (vfd->ctrl_handler)
2294 return v4l2_queryctrl(vfd->ctrl_handler, p);
2295 if (ops->vidioc_queryctrl)
2296 return ops->vidioc_queryctrl(file, fh, p);
2297 return -ENOTTY;
2298}
2299
2300static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops,
2301 struct file *file, void *fh, void *arg)
2302{
2303 struct video_device *vfd = video_devdata(file);
2304 struct v4l2_query_ext_ctrl *p = arg;
2305 struct v4l2_fh *vfh =
2306 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2307
2308 if (vfh && vfh->ctrl_handler)
2309 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p);
2310 if (vfd->ctrl_handler)
2311 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p);
2312 if (ops->vidioc_query_ext_ctrl)
2313 return ops->vidioc_query_ext_ctrl(file, fh, p);
2314 return -ENOTTY;
2315}
2316
2317static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,
2318 struct file *file, void *fh, void *arg)
2319{
2320 struct video_device *vfd = video_devdata(file);
2321 struct v4l2_querymenu *p = arg;
2322 struct v4l2_fh *vfh =
2323 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2324
2325 if (vfh && vfh->ctrl_handler)
2326 return v4l2_querymenu(vfh->ctrl_handler, p);
2327 if (vfd->ctrl_handler)
2328 return v4l2_querymenu(vfd->ctrl_handler, p);
2329 if (ops->vidioc_querymenu)
2330 return ops->vidioc_querymenu(file, fh, p);
2331 return -ENOTTY;
2332}
2333
2334static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops,
2335 struct file *file, void *fh, void *arg)
2336{
2337 struct video_device *vfd = video_devdata(file);
2338 struct v4l2_control *p = arg;
2339 struct v4l2_fh *vfh =
2340 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2341 struct v4l2_ext_controls ctrls;
2342 struct v4l2_ext_control ctrl;
2343
2344 if (vfh && vfh->ctrl_handler)
2345 return v4l2_g_ctrl(vfh->ctrl_handler, p);
2346 if (vfd->ctrl_handler)
2347 return v4l2_g_ctrl(vfd->ctrl_handler, p);
2348 if (ops->vidioc_g_ctrl)
2349 return ops->vidioc_g_ctrl(file, fh, p);
2350 if (ops->vidioc_g_ext_ctrls == NULL)
2351 return -ENOTTY;
2352
2353 ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
2354 ctrls.count = 1;
2355 ctrls.controls = &ctrl;
2356 ctrl.id = p->id;
2357 ctrl.value = p->value;
2358 if (check_ext_ctrls(&ctrls, VIDIOC_G_CTRL)) {
2359 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
2360
2361 if (ret == 0)
2362 p->value = ctrl.value;
2363 return ret;
2364 }
2365 return -EINVAL;
2366}
2367
2368static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,
2369 struct file *file, void *fh, void *arg)
2370{
2371 struct video_device *vfd = video_devdata(file);
2372 struct v4l2_control *p = arg;
2373 struct v4l2_fh *vfh =
2374 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2375 struct v4l2_ext_controls ctrls;
2376 struct v4l2_ext_control ctrl;
2377 int ret;
2378
2379 if (vfh && vfh->ctrl_handler)
2380 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
2381 if (vfd->ctrl_handler)
2382 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
2383 if (ops->vidioc_s_ctrl)
2384 return ops->vidioc_s_ctrl(file, fh, p);
2385 if (ops->vidioc_s_ext_ctrls == NULL)
2386 return -ENOTTY;
2387
2388 ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
2389 ctrls.count = 1;
2390 ctrls.controls = &ctrl;
2391 ctrl.id = p->id;
2392 ctrl.value = p->value;
2393 if (!check_ext_ctrls(&ctrls, VIDIOC_S_CTRL))
2394 return -EINVAL;
2395 ret = ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
2396 p->value = ctrl.value;
2397 return ret;
2398}
2399
2400static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2401 struct file *file, void *fh, void *arg)
2402{
2403 struct video_device *vfd = video_devdata(file);
2404 struct v4l2_ext_controls *p = arg;
2405 struct v4l2_fh *vfh =
2406 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2407
2408 p->error_idx = p->count;
2409 if (vfh && vfh->ctrl_handler)
2410 return v4l2_g_ext_ctrls(vfh->ctrl_handler,
2411 vfd, vfd->v4l2_dev->mdev, p);
2412 if (vfd->ctrl_handler)
2413 return v4l2_g_ext_ctrls(vfd->ctrl_handler,
2414 vfd, vfd->v4l2_dev->mdev, p);
2415 if (ops->vidioc_g_ext_ctrls == NULL)
2416 return -ENOTTY;
2417 return check_ext_ctrls(p, VIDIOC_G_EXT_CTRLS) ?
2418 ops->vidioc_g_ext_ctrls(file, fh, p) : -EINVAL;
2419}
2420
2421static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2422 struct file *file, void *fh, void *arg)
2423{
2424 struct video_device *vfd = video_devdata(file);
2425 struct v4l2_ext_controls *p = arg;
2426 struct v4l2_fh *vfh =
2427 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2428
2429 p->error_idx = p->count;
2430 if (vfh && vfh->ctrl_handler)
2431 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler,
2432 vfd, vfd->v4l2_dev->mdev, p);
2433 if (vfd->ctrl_handler)
2434 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler,
2435 vfd, vfd->v4l2_dev->mdev, p);
2436 if (ops->vidioc_s_ext_ctrls == NULL)
2437 return -ENOTTY;
2438 return check_ext_ctrls(p, VIDIOC_S_EXT_CTRLS) ?
2439 ops->vidioc_s_ext_ctrls(file, fh, p) : -EINVAL;
2440}
2441
2442static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2443 struct file *file, void *fh, void *arg)
2444{
2445 struct video_device *vfd = video_devdata(file);
2446 struct v4l2_ext_controls *p = arg;
2447 struct v4l2_fh *vfh =
2448 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2449
2450 p->error_idx = p->count;
2451 if (vfh && vfh->ctrl_handler)
2452 return v4l2_try_ext_ctrls(vfh->ctrl_handler,
2453 vfd, vfd->v4l2_dev->mdev, p);
2454 if (vfd->ctrl_handler)
2455 return v4l2_try_ext_ctrls(vfd->ctrl_handler,
2456 vfd, vfd->v4l2_dev->mdev, p);
2457 if (ops->vidioc_try_ext_ctrls == NULL)
2458 return -ENOTTY;
2459 return check_ext_ctrls(p, VIDIOC_TRY_EXT_CTRLS) ?
2460 ops->vidioc_try_ext_ctrls(file, fh, p) : -EINVAL;
2461}
2462
2463/*
2464 * The selection API specified originally that the _MPLANE buffer types
2465 * shouldn't be used. The reasons for this are lost in the mists of time
2466 * (or just really crappy memories). Regardless, this is really annoying
2467 * for userspace. So to keep things simple we map _MPLANE buffer types
2468 * to their 'regular' counterparts before calling the driver. And we
2469 * restore it afterwards. This way applications can use either buffer
2470 * type and drivers don't need to check for both.
2471 */
2472static int v4l_g_selection(const struct v4l2_ioctl_ops *ops,
2473 struct file *file, void *fh, void *arg)
2474{
2475 struct v4l2_selection *p = arg;
2476 u32 old_type = p->type;
2477 int ret;
2478
2479 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2480 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2481 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2482 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2483 ret = ops->vidioc_g_selection(file, fh, p);
2484 p->type = old_type;
2485 return ret;
2486}
2487
2488static int v4l_s_selection(const struct v4l2_ioctl_ops *ops,
2489 struct file *file, void *fh, void *arg)
2490{
2491 struct v4l2_selection *p = arg;
2492 u32 old_type = p->type;
2493 int ret;
2494
2495 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2496 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2497 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2498 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2499 ret = ops->vidioc_s_selection(file, fh, p);
2500 p->type = old_type;
2501 return ret;
2502}
2503
2504static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
2505 struct file *file, void *fh, void *arg)
2506{
2507 struct video_device *vfd = video_devdata(file);
2508 struct v4l2_crop *p = arg;
2509 struct v4l2_selection s = {
2510 .type = p->type,
2511 };
2512 int ret;
2513
2514 /* simulate capture crop using selection api */
2515
2516 /* crop means compose for output devices */
2517 if (V4L2_TYPE_IS_OUTPUT(p->type))
2518 s.target = V4L2_SEL_TGT_COMPOSE;
2519 else
2520 s.target = V4L2_SEL_TGT_CROP;
2521
2522 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))
2523 s.target = s.target == V4L2_SEL_TGT_COMPOSE ?
2524 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE;
2525
2526 ret = v4l_g_selection(ops, file, fh, &s);
2527
2528 /* copying results to old structure on success */
2529 if (!ret)
2530 p->c = s.r;
2531 return ret;
2532}
2533
2534static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
2535 struct file *file, void *fh, void *arg)
2536{
2537 struct video_device *vfd = video_devdata(file);
2538 struct v4l2_crop *p = arg;
2539 struct v4l2_selection s = {
2540 .type = p->type,
2541 .r = p->c,
2542 };
2543
2544 /* simulate capture crop using selection api */
2545
2546 /* crop means compose for output devices */
2547 if (V4L2_TYPE_IS_OUTPUT(p->type))
2548 s.target = V4L2_SEL_TGT_COMPOSE;
2549 else
2550 s.target = V4L2_SEL_TGT_CROP;
2551
2552 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))
2553 s.target = s.target == V4L2_SEL_TGT_COMPOSE ?
2554 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE;
2555
2556 return v4l_s_selection(ops, file, fh, &s);
2557}
2558
2559static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
2560 struct file *file, void *fh, void *arg)
2561{
2562 struct video_device *vfd = video_devdata(file);
2563 struct v4l2_cropcap *p = arg;
2564 struct v4l2_selection s = { .type = p->type };
2565 int ret = 0;
2566
2567 /* setting trivial pixelaspect */
2568 p->pixelaspect.numerator = 1;
2569 p->pixelaspect.denominator = 1;
2570
2571 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2572 s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2573 else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2574 s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2575
2576 /*
2577 * The determine_valid_ioctls() call already should ensure
2578 * that this can never happen, but just in case...
2579 */
2580 if (WARN_ON(!ops->vidioc_g_selection))
2581 return -ENOTTY;
2582
2583 if (ops->vidioc_g_pixelaspect)
2584 ret = ops->vidioc_g_pixelaspect(file, fh, s.type,
2585 &p->pixelaspect);
2586
2587 /*
2588 * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the
2589 * square pixel aspect ratio in that case.
2590 */
2591 if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD)
2592 return ret;
2593
2594 /* Use g_selection() to fill in the bounds and defrect rectangles */
2595
2596 /* obtaining bounds */
2597 if (V4L2_TYPE_IS_OUTPUT(p->type))
2598 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
2599 else
2600 s.target = V4L2_SEL_TGT_CROP_BOUNDS;
2601
2602 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))
2603 s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ?
2604 V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS;
2605
2606 ret = v4l_g_selection(ops, file, fh, &s);
2607 if (ret)
2608 return ret;
2609 p->bounds = s.r;
2610
2611 /* obtaining defrect */
2612 if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS)
2613 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
2614 else
2615 s.target = V4L2_SEL_TGT_CROP_DEFAULT;
2616
2617 ret = v4l_g_selection(ops, file, fh, &s);
2618 if (ret)
2619 return ret;
2620 p->defrect = s.r;
2621
2622 return 0;
2623}
2624
2625static int v4l_log_status(const struct v4l2_ioctl_ops *ops,
2626 struct file *file, void *fh, void *arg)
2627{
2628 struct video_device *vfd = video_devdata(file);
2629 int ret;
2630
2631 if (vfd->v4l2_dev)
2632 pr_info("%s: ================= START STATUS =================\n",
2633 vfd->v4l2_dev->name);
2634 ret = ops->vidioc_log_status(file, fh);
2635 if (vfd->v4l2_dev)
2636 pr_info("%s: ================== END STATUS ==================\n",
2637 vfd->v4l2_dev->name);
2638 return ret;
2639}
2640
2641static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
2642 struct file *file, void *fh, void *arg)
2643{
2644#ifdef CONFIG_VIDEO_ADV_DEBUG
2645 struct v4l2_dbg_register *p = arg;
2646 struct video_device *vfd = video_devdata(file);
2647 struct v4l2_subdev *sd;
2648 int idx = 0;
2649
2650 if (!capable(CAP_SYS_ADMIN))
2651 return -EPERM;
2652 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2653 if (vfd->v4l2_dev == NULL)
2654 return -EINVAL;
2655 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2656 if (p->match.addr == idx++)
2657 return v4l2_subdev_call(sd, core, g_register, p);
2658 return -EINVAL;
2659 }
2660 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2661 (ops->vidioc_g_chip_info || p->match.addr == 0))
2662 return ops->vidioc_g_register(file, fh, p);
2663 return -EINVAL;
2664#else
2665 return -ENOTTY;
2666#endif
2667}
2668
2669static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
2670 struct file *file, void *fh, void *arg)
2671{
2672#ifdef CONFIG_VIDEO_ADV_DEBUG
2673 const struct v4l2_dbg_register *p = arg;
2674 struct video_device *vfd = video_devdata(file);
2675 struct v4l2_subdev *sd;
2676 int idx = 0;
2677
2678 if (!capable(CAP_SYS_ADMIN))
2679 return -EPERM;
2680 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2681 if (vfd->v4l2_dev == NULL)
2682 return -EINVAL;
2683 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2684 if (p->match.addr == idx++)
2685 return v4l2_subdev_call(sd, core, s_register, p);
2686 return -EINVAL;
2687 }
2688 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2689 (ops->vidioc_g_chip_info || p->match.addr == 0))
2690 return ops->vidioc_s_register(file, fh, p);
2691 return -EINVAL;
2692#else
2693 return -ENOTTY;
2694#endif
2695}
2696
2697static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,
2698 struct file *file, void *fh, void *arg)
2699{
2700#ifdef CONFIG_VIDEO_ADV_DEBUG
2701 struct video_device *vfd = video_devdata(file);
2702 struct v4l2_dbg_chip_info *p = arg;
2703 struct v4l2_subdev *sd;
2704 int idx = 0;
2705
2706 switch (p->match.type) {
2707 case V4L2_CHIP_MATCH_BRIDGE:
2708 if (ops->vidioc_s_register)
2709 p->flags |= V4L2_CHIP_FL_WRITABLE;
2710 if (ops->vidioc_g_register)
2711 p->flags |= V4L2_CHIP_FL_READABLE;
2712 strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));
2713 if (ops->vidioc_g_chip_info)
2714 return ops->vidioc_g_chip_info(file, fh, arg);
2715 if (p->match.addr)
2716 return -EINVAL;
2717 return 0;
2718
2719 case V4L2_CHIP_MATCH_SUBDEV:
2720 if (vfd->v4l2_dev == NULL)
2721 break;
2722 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {
2723 if (p->match.addr != idx++)
2724 continue;
2725 if (sd->ops->core && sd->ops->core->s_register)
2726 p->flags |= V4L2_CHIP_FL_WRITABLE;
2727 if (sd->ops->core && sd->ops->core->g_register)
2728 p->flags |= V4L2_CHIP_FL_READABLE;
2729 strscpy(p->name, sd->name, sizeof(p->name));
2730 return 0;
2731 }
2732 break;
2733 }
2734 return -EINVAL;
2735#else
2736 return -ENOTTY;
2737#endif
2738}
2739
2740static int v4l_dqevent(const struct v4l2_ioctl_ops *ops,
2741 struct file *file, void *fh, void *arg)
2742{
2743 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK);
2744}
2745
2746static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,
2747 struct file *file, void *fh, void *arg)
2748{
2749 return ops->vidioc_subscribe_event(fh, arg);
2750}
2751
2752static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,
2753 struct file *file, void *fh, void *arg)
2754{
2755 return ops->vidioc_unsubscribe_event(fh, arg);
2756}
2757
2758static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,
2759 struct file *file, void *fh, void *arg)
2760{
2761 struct v4l2_sliced_vbi_cap *p = arg;
2762 int ret = check_fmt(file, p->type);
2763
2764 if (ret)
2765 return ret;
2766
2767 /* Clear up to type, everything after type is zeroed already */
2768 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
2769
2770 return ops->vidioc_g_sliced_vbi_cap(file, fh, p);
2771}
2772
2773static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
2774 struct file *file, void *fh, void *arg)
2775{
2776 struct video_device *vfd = video_devdata(file);
2777 struct v4l2_frequency_band *p = arg;
2778 enum v4l2_tuner_type type;
2779 int err;
2780
2781 if (vfd->vfl_type == VFL_TYPE_SDR) {
2782 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)
2783 return -EINVAL;
2784 type = p->type;
2785 } else {
2786 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2787 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2788 if (type != p->type)
2789 return -EINVAL;
2790 }
2791 if (ops->vidioc_enum_freq_bands) {
2792 err = ops->vidioc_enum_freq_bands(file, fh, p);
2793 if (err != -ENOTTY)
2794 return err;
2795 }
2796 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) {
2797 struct v4l2_tuner t = {
2798 .index = p->tuner,
2799 .type = type,
2800 };
2801
2802 if (p->index)
2803 return -EINVAL;
2804 err = ops->vidioc_g_tuner(file, fh, &t);
2805 if (err)
2806 return err;
2807 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2808 p->rangelow = t.rangelow;
2809 p->rangehigh = t.rangehigh;
2810 p->modulation = (type == V4L2_TUNER_RADIO) ?
2811 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2812 return 0;
2813 }
2814 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) {
2815 struct v4l2_modulator m = {
2816 .index = p->tuner,
2817 };
2818
2819 if (type != V4L2_TUNER_RADIO)
2820 return -EINVAL;
2821 if (p->index)
2822 return -EINVAL;
2823 err = ops->vidioc_g_modulator(file, fh, &m);
2824 if (err)
2825 return err;
2826 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2827 p->rangelow = m.rangelow;
2828 p->rangehigh = m.rangehigh;
2829 p->modulation = (type == V4L2_TUNER_RADIO) ?
2830 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2831 return 0;
2832 }
2833 return -ENOTTY;
2834}
2835
2836struct v4l2_ioctl_info {
2837 unsigned int ioctl;
2838 u32 flags;
2839 const char * const name;
2840 int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file,
2841 void *fh, void *p);
2842 void (*debug)(const void *arg, bool write_only);
2843};
2844
2845/* This control needs a priority check */
2846#define INFO_FL_PRIO (1 << 0)
2847/* This control can be valid if the filehandle passes a control handler. */
2848#define INFO_FL_CTRL (1 << 1)
2849/* Queuing ioctl */
2850#define INFO_FL_QUEUE (1 << 2)
2851/* Always copy back result, even on error */
2852#define INFO_FL_ALWAYS_COPY (1 << 3)
2853/* Zero struct from after the field to the end */
2854#define INFO_FL_CLEAR(v4l2_struct, field) \
2855 ((offsetof(struct v4l2_struct, field) + \
2856 sizeof_field(struct v4l2_struct, field)) << 16)
2857#define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
2858
2859#define DEFINE_V4L_STUB_FUNC(_vidioc) \
2860 static int v4l_stub_ ## _vidioc( \
2861 const struct v4l2_ioctl_ops *ops, \
2862 struct file *file, void *fh, void *p) \
2863 { \
2864 return ops->vidioc_ ## _vidioc(file, fh, p); \
2865 }
2866
2867#define IOCTL_INFO(_ioctl, _func, _debug, _flags) \
2868 [_IOC_NR(_ioctl)] = { \
2869 .ioctl = _ioctl, \
2870 .flags = _flags, \
2871 .name = #_ioctl, \
2872 .func = _func, \
2873 .debug = _debug, \
2874 }
2875
2876DEFINE_V4L_STUB_FUNC(g_fbuf)
2877DEFINE_V4L_STUB_FUNC(expbuf)
2878DEFINE_V4L_STUB_FUNC(g_std)
2879DEFINE_V4L_STUB_FUNC(g_audio)
2880DEFINE_V4L_STUB_FUNC(s_audio)
2881DEFINE_V4L_STUB_FUNC(g_edid)
2882DEFINE_V4L_STUB_FUNC(s_edid)
2883DEFINE_V4L_STUB_FUNC(g_audout)
2884DEFINE_V4L_STUB_FUNC(s_audout)
2885DEFINE_V4L_STUB_FUNC(g_jpegcomp)
2886DEFINE_V4L_STUB_FUNC(s_jpegcomp)
2887DEFINE_V4L_STUB_FUNC(enumaudio)
2888DEFINE_V4L_STUB_FUNC(enumaudout)
2889DEFINE_V4L_STUB_FUNC(enum_framesizes)
2890DEFINE_V4L_STUB_FUNC(enum_frameintervals)
2891DEFINE_V4L_STUB_FUNC(g_enc_index)
2892DEFINE_V4L_STUB_FUNC(encoder_cmd)
2893DEFINE_V4L_STUB_FUNC(try_encoder_cmd)
2894DEFINE_V4L_STUB_FUNC(decoder_cmd)
2895DEFINE_V4L_STUB_FUNC(try_decoder_cmd)
2896DEFINE_V4L_STUB_FUNC(s_dv_timings)
2897DEFINE_V4L_STUB_FUNC(g_dv_timings)
2898DEFINE_V4L_STUB_FUNC(enum_dv_timings)
2899DEFINE_V4L_STUB_FUNC(query_dv_timings)
2900DEFINE_V4L_STUB_FUNC(dv_timings_cap)
2901
2902static const struct v4l2_ioctl_info v4l2_ioctls[] = {
2903 IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
2904 IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, 0),
2905 IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0),
2906 IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
2907 IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2908 IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
2909 IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0),
2910 IOCTL_INFO(VIDIOC_S_FBUF, v4l_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
2911 IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO),
2912 IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),
2913 IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)),
2914 IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),
2915 IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2916 IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2917 IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
2918 IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
2919 IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0),
2920 IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
2921 IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
2922 IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
2923 IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
2924 IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
2925 IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
2926 IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
2927 IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0),
2928 IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO),
2929 IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
2930 IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
2931 IOCTL_INFO(VIDIOC_G_INPUT, v4l_g_input, v4l_print_u32, 0),
2932 IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
2933 IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY),
2934 IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY),
2935 IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_g_output, v4l_print_u32, 0),
2936 IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
2937 IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
2938 IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0),
2939 IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO),
2940 IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
2941 IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
2942 IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
2943 IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
2944 IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
2945 IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
2946 IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
2947 IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)),
2948 IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)),
2949 IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0),
2950 IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
2951 IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
2952 IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
2953 IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
2954 IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
2955 IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
2956 IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
2957 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)),
2958 IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
2959 IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY),
2960 IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL | INFO_FL_ALWAYS_COPY),
2961 IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY),
2962 IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
2963 IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
2964 IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0),
2965 IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2966 IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2967 IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
2968 IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0),
2969 IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
2970 IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
2971 IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
2972 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)),
2973 IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0),
2974 IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
2975 IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
2976 IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
2977 IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2978 IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
2979 IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)),
2980 IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY),
2981 IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)),
2982 IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
2983 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)),
2984 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)),
2985 IOCTL_INFO(VIDIOC_REMOVE_BUFS, v4l_remove_bufs, v4l_print_remove_buffers, INFO_FL_PRIO | INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_remove_buffers, type)),
2986};
2987#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
2988
2989static bool v4l2_is_known_ioctl(unsigned int cmd)
2990{
2991 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2992 return false;
2993 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
2994}
2995
2996static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev,
2997 struct v4l2_fh *vfh, unsigned int cmd,
2998 void *arg)
2999{
3000 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
3001 return vdev->lock;
3002 if (vfh && vfh->m2m_ctx &&
3003 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) {
3004 if (vfh->m2m_ctx->q_lock)
3005 return vfh->m2m_ctx->q_lock;
3006 }
3007 if (vdev->queue && vdev->queue->lock &&
3008 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
3009 return vdev->queue->lock;
3010 return vdev->lock;
3011}
3012
3013/* Common ioctl debug function. This function can be used by
3014 external ioctl messages as well as internal V4L ioctl */
3015void v4l_printk_ioctl(const char *prefix, unsigned int cmd)
3016{
3017 const char *dir, *type;
3018
3019 if (prefix)
3020 printk(KERN_DEBUG "%s: ", prefix);
3021
3022 switch (_IOC_TYPE(cmd)) {
3023 case 'd':
3024 type = "v4l2_int";
3025 break;
3026 case 'V':
3027 if (!v4l2_is_known_ioctl(cmd)) {
3028 type = "v4l2";
3029 break;
3030 }
3031 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
3032 return;
3033 default:
3034 type = "unknown";
3035 break;
3036 }
3037
3038 switch (_IOC_DIR(cmd)) {
3039 case _IOC_NONE: dir = "--"; break;
3040 case _IOC_READ: dir = "r-"; break;
3041 case _IOC_WRITE: dir = "-w"; break;
3042 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
3043 default: dir = "*ERR*"; break;
3044 }
3045 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
3046 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
3047}
3048EXPORT_SYMBOL(v4l_printk_ioctl);
3049
3050static long __video_do_ioctl(struct file *file,
3051 unsigned int cmd, void *arg)
3052{
3053 struct video_device *vfd = video_devdata(file);
3054 struct mutex *req_queue_lock = NULL;
3055 struct mutex *lock; /* ioctl serialization mutex */
3056 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
3057 bool write_only = false;
3058 struct v4l2_ioctl_info default_info;
3059 const struct v4l2_ioctl_info *info;
3060 void *fh = file->private_data;
3061 struct v4l2_fh *vfh = NULL;
3062 int dev_debug = vfd->dev_debug;
3063 long ret = -ENOTTY;
3064
3065 if (ops == NULL) {
3066 pr_warn("%s: has no ioctl_ops.\n",
3067 video_device_node_name(vfd));
3068 return ret;
3069 }
3070
3071 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
3072 vfh = file->private_data;
3073
3074 /*
3075 * We need to serialize streamon/off with queueing new requests.
3076 * These ioctls may trigger the cancellation of a streaming
3077 * operation, and that should not be mixed with queueing a new
3078 * request at the same time.
3079 */
3080 if (v4l2_device_supports_requests(vfd->v4l2_dev) &&
3081 (cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF)) {
3082 req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex;
3083
3084 if (mutex_lock_interruptible(req_queue_lock))
3085 return -ERESTARTSYS;
3086 }
3087
3088 lock = v4l2_ioctl_get_lock(vfd, vfh, cmd, arg);
3089
3090 if (lock && mutex_lock_interruptible(lock)) {
3091 if (req_queue_lock)
3092 mutex_unlock(req_queue_lock);
3093 return -ERESTARTSYS;
3094 }
3095
3096 if (!video_is_registered(vfd)) {
3097 ret = -ENODEV;
3098 goto unlock;
3099 }
3100
3101 if (v4l2_is_known_ioctl(cmd)) {
3102 info = &v4l2_ioctls[_IOC_NR(cmd)];
3103
3104 if (!is_valid_ioctl(vfd, cmd) &&
3105 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
3106 goto done;
3107
3108 if (vfh && (info->flags & INFO_FL_PRIO)) {
3109 ret = v4l2_prio_check(vfd->prio, vfh->prio);
3110 if (ret)
3111 goto done;
3112 }
3113 } else {
3114 default_info.ioctl = cmd;
3115 default_info.flags = 0;
3116 default_info.debug = v4l_print_default;
3117 info = &default_info;
3118 }
3119
3120 write_only = _IOC_DIR(cmd) == _IOC_WRITE;
3121 if (info != &default_info) {
3122 ret = info->func(ops, file, fh, arg);
3123 } else if (!ops->vidioc_default) {
3124 ret = -ENOTTY;
3125 } else {
3126 ret = ops->vidioc_default(file, fh,
3127 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
3128 cmd, arg);
3129 }
3130
3131done:
3132 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) {
3133 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) &&
3134 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF))
3135 goto unlock;
3136
3137 v4l_printk_ioctl(video_device_node_name(vfd), cmd);
3138 if (ret < 0)
3139 pr_cont(": error %ld", ret);
3140 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG))
3141 pr_cont("\n");
3142 else if (_IOC_DIR(cmd) == _IOC_NONE)
3143 info->debug(arg, write_only);
3144 else {
3145 pr_cont(": ");
3146 info->debug(arg, write_only);
3147 }
3148 }
3149
3150unlock:
3151 if (lock)
3152 mutex_unlock(lock);
3153 if (req_queue_lock)
3154 mutex_unlock(req_queue_lock);
3155 return ret;
3156}
3157
3158static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
3159 void __user **user_ptr, void ***kernel_ptr)
3160{
3161 int ret = 0;
3162
3163 switch (cmd) {
3164 case VIDIOC_PREPARE_BUF:
3165 case VIDIOC_QUERYBUF:
3166 case VIDIOC_QBUF:
3167 case VIDIOC_DQBUF: {
3168 struct v4l2_buffer *buf = parg;
3169
3170 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
3171 if (buf->length > VIDEO_MAX_PLANES) {
3172 ret = -EINVAL;
3173 break;
3174 }
3175 *user_ptr = (void __user *)buf->m.planes;
3176 *kernel_ptr = (void **)&buf->m.planes;
3177 *array_size = sizeof(struct v4l2_plane) * buf->length;
3178 ret = 1;
3179 }
3180 break;
3181 }
3182
3183 case VIDIOC_G_EDID:
3184 case VIDIOC_S_EDID: {
3185 struct v4l2_edid *edid = parg;
3186
3187 if (edid->blocks) {
3188 if (edid->blocks > 256) {
3189 ret = -EINVAL;
3190 break;
3191 }
3192 *user_ptr = (void __user *)edid->edid;
3193 *kernel_ptr = (void **)&edid->edid;
3194 *array_size = edid->blocks * 128;
3195 ret = 1;
3196 }
3197 break;
3198 }
3199
3200 case VIDIOC_S_EXT_CTRLS:
3201 case VIDIOC_G_EXT_CTRLS:
3202 case VIDIOC_TRY_EXT_CTRLS: {
3203 struct v4l2_ext_controls *ctrls = parg;
3204
3205 if (ctrls->count != 0) {
3206 if (ctrls->count > V4L2_CID_MAX_CTRLS) {
3207 ret = -EINVAL;
3208 break;
3209 }
3210 *user_ptr = (void __user *)ctrls->controls;
3211 *kernel_ptr = (void **)&ctrls->controls;
3212 *array_size = sizeof(struct v4l2_ext_control)
3213 * ctrls->count;
3214 ret = 1;
3215 }
3216 break;
3217 }
3218
3219 case VIDIOC_SUBDEV_G_ROUTING:
3220 case VIDIOC_SUBDEV_S_ROUTING: {
3221 struct v4l2_subdev_routing *routing = parg;
3222
3223 if (routing->len_routes > 256)
3224 return -E2BIG;
3225
3226 *user_ptr = u64_to_user_ptr(routing->routes);
3227 *kernel_ptr = (void **)&routing->routes;
3228 *array_size = sizeof(struct v4l2_subdev_route)
3229 * routing->len_routes;
3230 ret = 1;
3231 break;
3232 }
3233 }
3234
3235 return ret;
3236}
3237
3238static unsigned int video_translate_cmd(unsigned int cmd)
3239{
3240#if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME)
3241 switch (cmd) {
3242 case VIDIOC_DQEVENT_TIME32:
3243 return VIDIOC_DQEVENT;
3244 case VIDIOC_QUERYBUF_TIME32:
3245 return VIDIOC_QUERYBUF;
3246 case VIDIOC_QBUF_TIME32:
3247 return VIDIOC_QBUF;
3248 case VIDIOC_DQBUF_TIME32:
3249 return VIDIOC_DQBUF;
3250 case VIDIOC_PREPARE_BUF_TIME32:
3251 return VIDIOC_PREPARE_BUF;
3252 }
3253#endif
3254 if (in_compat_syscall())
3255 return v4l2_compat_translate_cmd(cmd);
3256
3257 return cmd;
3258}
3259
3260static int video_get_user(void __user *arg, void *parg,
3261 unsigned int real_cmd, unsigned int cmd,
3262 bool *always_copy)
3263{
3264 unsigned int n = _IOC_SIZE(real_cmd);
3265 int err = 0;
3266
3267 if (!(_IOC_DIR(cmd) & _IOC_WRITE)) {
3268 /* read-only ioctl */
3269 memset(parg, 0, n);
3270 return 0;
3271 }
3272
3273 /*
3274 * In some cases, only a few fields are used as input,
3275 * i.e. when the app sets "index" and then the driver
3276 * fills in the rest of the structure for the thing
3277 * with that index. We only need to copy up the first
3278 * non-input field.
3279 */
3280 if (v4l2_is_known_ioctl(real_cmd)) {
3281 u32 flags = v4l2_ioctls[_IOC_NR(real_cmd)].flags;
3282
3283 if (flags & INFO_FL_CLEAR_MASK)
3284 n = (flags & INFO_FL_CLEAR_MASK) >> 16;
3285 *always_copy = flags & INFO_FL_ALWAYS_COPY;
3286 }
3287
3288 if (cmd == real_cmd) {
3289 if (copy_from_user(parg, (void __user *)arg, n))
3290 err = -EFAULT;
3291 } else if (in_compat_syscall()) {
3292 memset(parg, 0, n);
3293 err = v4l2_compat_get_user(arg, parg, cmd);
3294 } else {
3295 memset(parg, 0, n);
3296#if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME)
3297 switch (cmd) {
3298 case VIDIOC_QUERYBUF_TIME32:
3299 case VIDIOC_QBUF_TIME32:
3300 case VIDIOC_DQBUF_TIME32:
3301 case VIDIOC_PREPARE_BUF_TIME32: {
3302 struct v4l2_buffer_time32 vb32;
3303 struct v4l2_buffer *vb = parg;
3304
3305 if (copy_from_user(&vb32, arg, sizeof(vb32)))
3306 return -EFAULT;
3307
3308 *vb = (struct v4l2_buffer) {
3309 .index = vb32.index,
3310 .type = vb32.type,
3311 .bytesused = vb32.bytesused,
3312 .flags = vb32.flags,
3313 .field = vb32.field,
3314 .timestamp.tv_sec = vb32.timestamp.tv_sec,
3315 .timestamp.tv_usec = vb32.timestamp.tv_usec,
3316 .timecode = vb32.timecode,
3317 .sequence = vb32.sequence,
3318 .memory = vb32.memory,
3319 .m.userptr = vb32.m.userptr,
3320 .length = vb32.length,
3321 .request_fd = vb32.request_fd,
3322 };
3323 break;
3324 }
3325 }
3326#endif
3327 }
3328
3329 /* zero out anything we don't copy from userspace */
3330 if (!err && n < _IOC_SIZE(real_cmd))
3331 memset((u8 *)parg + n, 0, _IOC_SIZE(real_cmd) - n);
3332 return err;
3333}
3334
3335static int video_put_user(void __user *arg, void *parg,
3336 unsigned int real_cmd, unsigned int cmd)
3337{
3338 if (!(_IOC_DIR(cmd) & _IOC_READ))
3339 return 0;
3340
3341 if (cmd == real_cmd) {
3342 /* Copy results into user buffer */
3343 if (copy_to_user(arg, parg, _IOC_SIZE(cmd)))
3344 return -EFAULT;
3345 return 0;
3346 }
3347
3348 if (in_compat_syscall())
3349 return v4l2_compat_put_user(arg, parg, cmd);
3350
3351#if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME)
3352 switch (cmd) {
3353 case VIDIOC_DQEVENT_TIME32: {
3354 struct v4l2_event *ev = parg;
3355 struct v4l2_event_time32 ev32;
3356
3357 memset(&ev32, 0, sizeof(ev32));
3358
3359 ev32.type = ev->type;
3360 ev32.pending = ev->pending;
3361 ev32.sequence = ev->sequence;
3362 ev32.timestamp.tv_sec = ev->timestamp.tv_sec;
3363 ev32.timestamp.tv_nsec = ev->timestamp.tv_nsec;
3364 ev32.id = ev->id;
3365
3366 memcpy(&ev32.u, &ev->u, sizeof(ev->u));
3367 memcpy(&ev32.reserved, &ev->reserved, sizeof(ev->reserved));
3368
3369 if (copy_to_user(arg, &ev32, sizeof(ev32)))
3370 return -EFAULT;
3371 break;
3372 }
3373 case VIDIOC_QUERYBUF_TIME32:
3374 case VIDIOC_QBUF_TIME32:
3375 case VIDIOC_DQBUF_TIME32:
3376 case VIDIOC_PREPARE_BUF_TIME32: {
3377 struct v4l2_buffer *vb = parg;
3378 struct v4l2_buffer_time32 vb32;
3379
3380 memset(&vb32, 0, sizeof(vb32));
3381
3382 vb32.index = vb->index;
3383 vb32.type = vb->type;
3384 vb32.bytesused = vb->bytesused;
3385 vb32.flags = vb->flags;
3386 vb32.field = vb->field;
3387 vb32.timestamp.tv_sec = vb->timestamp.tv_sec;
3388 vb32.timestamp.tv_usec = vb->timestamp.tv_usec;
3389 vb32.timecode = vb->timecode;
3390 vb32.sequence = vb->sequence;
3391 vb32.memory = vb->memory;
3392 vb32.m.userptr = vb->m.userptr;
3393 vb32.length = vb->length;
3394 vb32.request_fd = vb->request_fd;
3395
3396 if (copy_to_user(arg, &vb32, sizeof(vb32)))
3397 return -EFAULT;
3398 break;
3399 }
3400 }
3401#endif
3402
3403 return 0;
3404}
3405
3406long
3407video_usercopy(struct file *file, unsigned int orig_cmd, unsigned long arg,
3408 v4l2_kioctl func)
3409{
3410 char sbuf[128];
3411 void *mbuf = NULL, *array_buf = NULL;
3412 void *parg = (void *)arg;
3413 long err = -EINVAL;
3414 bool has_array_args;
3415 bool always_copy = false;
3416 size_t array_size = 0;
3417 void __user *user_ptr = NULL;
3418 void **kernel_ptr = NULL;
3419 unsigned int cmd = video_translate_cmd(orig_cmd);
3420 const size_t ioc_size = _IOC_SIZE(cmd);
3421
3422 /* Copy arguments into temp kernel buffer */
3423 if (_IOC_DIR(cmd) != _IOC_NONE) {
3424 if (ioc_size <= sizeof(sbuf)) {
3425 parg = sbuf;
3426 } else {
3427 /* too big to allocate from stack */
3428 mbuf = kmalloc(ioc_size, GFP_KERNEL);
3429 if (NULL == mbuf)
3430 return -ENOMEM;
3431 parg = mbuf;
3432 }
3433
3434 err = video_get_user((void __user *)arg, parg, cmd,
3435 orig_cmd, &always_copy);
3436 if (err)
3437 goto out;
3438 }
3439
3440 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
3441 if (err < 0)
3442 goto out;
3443 has_array_args = err;
3444
3445 if (has_array_args) {
3446 array_buf = kvmalloc(array_size, GFP_KERNEL);
3447 err = -ENOMEM;
3448 if (array_buf == NULL)
3449 goto out;
3450 if (in_compat_syscall())
3451 err = v4l2_compat_get_array_args(file, array_buf,
3452 user_ptr, array_size,
3453 orig_cmd, parg);
3454 else
3455 err = copy_from_user(array_buf, user_ptr, array_size) ?
3456 -EFAULT : 0;
3457 if (err)
3458 goto out;
3459 *kernel_ptr = array_buf;
3460 }
3461
3462 /* Handles IOCTL */
3463 err = func(file, cmd, parg);
3464 if (err == -ENOTTY || err == -ENOIOCTLCMD) {
3465 err = -ENOTTY;
3466 goto out;
3467 }
3468
3469 if (err == 0) {
3470 if (cmd == VIDIOC_DQBUF)
3471 trace_v4l2_dqbuf(video_devdata(file)->minor, parg);
3472 else if (cmd == VIDIOC_QBUF)
3473 trace_v4l2_qbuf(video_devdata(file)->minor, parg);
3474 }
3475
3476 /*
3477 * Some ioctls can return an error, but still have valid
3478 * results that must be returned.
3479 *
3480 * FIXME: subdev IOCTLS are partially handled here and partially in
3481 * v4l2-subdev.c and the 'always_copy' flag can only be set for IOCTLS
3482 * defined here as part of the 'v4l2_ioctls' array. As
3483 * VIDIOC_SUBDEV_[GS]_ROUTING needs to return results to applications
3484 * even in case of failure, but it is not defined here as part of the
3485 * 'v4l2_ioctls' array, insert an ad-hoc check to address that.
3486 */
3487 if (cmd == VIDIOC_SUBDEV_G_ROUTING || cmd == VIDIOC_SUBDEV_S_ROUTING)
3488 always_copy = true;
3489
3490 if (err < 0 && !always_copy)
3491 goto out;
3492
3493 if (has_array_args) {
3494 *kernel_ptr = (void __force *)user_ptr;
3495 if (in_compat_syscall()) {
3496 int put_err;
3497
3498 put_err = v4l2_compat_put_array_args(file, user_ptr,
3499 array_buf,
3500 array_size,
3501 orig_cmd, parg);
3502 if (put_err)
3503 err = put_err;
3504 } else if (copy_to_user(user_ptr, array_buf, array_size)) {
3505 err = -EFAULT;
3506 }
3507 }
3508
3509 if (video_put_user((void __user *)arg, parg, cmd, orig_cmd))
3510 err = -EFAULT;
3511out:
3512 kvfree(array_buf);
3513 kfree(mbuf);
3514 return err;
3515}
3516
3517long video_ioctl2(struct file *file,
3518 unsigned int cmd, unsigned long arg)
3519{
3520 return video_usercopy(file, cmd, arg, __video_do_ioctl);
3521}
3522EXPORT_SYMBOL(video_ioctl2);