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[media] v4l2-ioctl.c: use the new table for preset/timings ioctls
[deliverable/linux.git] / drivers / media / video / v4l2-ioctl.c
CommitLineData
35ea11ff
HV		 1/*
2 * Video capture interface for Linux version 2
3 *
4 * A generic framework to process V4L2 ioctl commands.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
d9b01449 11 * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1)
35ea11ff
HV		 12 * Mauro Carvalho Chehab <mchehab@infradead.org> (version 2)
13 */
14
15#include <linux/module.h>
5a0e3ad6 16#include <linux/slab.h>
35ea11ff
HV		 17#include <linux/types.h>
18#include <linux/kernel.h>
ae6db515 19#include <linux/version.h>
35ea11ff 20
35ea11ff
HV		 21#include <linux/videodev2.h>
22
35ea11ff
HV		 23#include <media/v4l2-common.h>
24#include <media/v4l2-ioctl.h>
11bbc1ca 25#include <media/v4l2-ctrls.h>
d3d7c963
SA		 26#include <media/v4l2-fh.h>
27#include <media/v4l2-event.h>
99cd47bc 28#include <media/v4l2-device.h>
80b36e0f 29#include <media/v4l2-chip-ident.h>
35ea11ff
HV		 30
31#define dbgarg(cmd, fmt, arg...) \
32 do { \
33 if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) { \
34 printk(KERN_DEBUG "%s: ", vfd->name); \
35 v4l_printk_ioctl(cmd); \
36 printk(" " fmt, ## arg); \
37 } \
38 } while (0)
39
40#define dbgarg2(fmt, arg...) \
41 do { \
42 if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) \
43 printk(KERN_DEBUG "%s: " fmt, vfd->name, ## arg);\
44 } while (0)
45
d33fbcbb
MCC		 46#define dbgarg3(fmt, arg...) \
47 do { \
48 if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) \
49 printk(KERN_CONT "%s: " fmt, vfd->name, ## arg);\
50 } while (0)
51
25985edc 52/* Zero out the end of the struct pointed to by p. Everything after, but
7ecc0cf9
TP		 53 * not including, the specified field is cleared. */
54#define CLEAR_AFTER_FIELD(p, field) \
55 memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \
56 0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field))
57
35ea11ff
HV		 58struct std_descr {
59 v4l2_std_id std;
60 const char *descr;
61};
62
63static const struct std_descr standards[] = {
64 { V4L2_STD_NTSC, "NTSC" },
65 { V4L2_STD_NTSC_M, "NTSC-M" },
66 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" },
67 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" },
68 { V4L2_STD_NTSC_443, "NTSC-443" },
69 { V4L2_STD_PAL, "PAL" },
70 { V4L2_STD_PAL_BG, "PAL-BG" },
71 { V4L2_STD_PAL_B, "PAL-B" },
72 { V4L2_STD_PAL_B1, "PAL-B1" },
73 { V4L2_STD_PAL_G, "PAL-G" },
74 { V4L2_STD_PAL_H, "PAL-H" },
75 { V4L2_STD_PAL_I, "PAL-I" },
76 { V4L2_STD_PAL_DK, "PAL-DK" },
77 { V4L2_STD_PAL_D, "PAL-D" },
78 { V4L2_STD_PAL_D1, "PAL-D1" },
79 { V4L2_STD_PAL_K, "PAL-K" },
80 { V4L2_STD_PAL_M, "PAL-M" },
81 { V4L2_STD_PAL_N, "PAL-N" },
82 { V4L2_STD_PAL_Nc, "PAL-Nc" },
83 { V4L2_STD_PAL_60, "PAL-60" },
84 { V4L2_STD_SECAM, "SECAM" },
85 { V4L2_STD_SECAM_B, "SECAM-B" },
86 { V4L2_STD_SECAM_G, "SECAM-G" },
87 { V4L2_STD_SECAM_H, "SECAM-H" },
88 { V4L2_STD_SECAM_DK, "SECAM-DK" },
89 { V4L2_STD_SECAM_D, "SECAM-D" },
90 { V4L2_STD_SECAM_K, "SECAM-K" },
91 { V4L2_STD_SECAM_K1, "SECAM-K1" },
92 { V4L2_STD_SECAM_L, "SECAM-L" },
93 { V4L2_STD_SECAM_LC, "SECAM-Lc" },
94 { 0, "Unknown" }
95};
96
97/* video4linux standard ID conversion to standard name
98 */
99const char *v4l2_norm_to_name(v4l2_std_id id)
100{
101 u32 myid = id;
102 int i;
103
104 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
105 64 bit comparations. So, on that architecture, with some gcc
106 variants, compilation fails. Currently, the max value is 30bit wide.
107 */
108 BUG_ON(myid != id);
109
110 for (i = 0; standards[i].std; i++)
111 if (myid == standards[i].std)
112 break;
113 return standards[i].descr;
114}
115EXPORT_SYMBOL(v4l2_norm_to_name);
116
51f0b8d5
TP		 117/* Returns frame period for the given standard */
118void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod)
119{
120 if (id & V4L2_STD_525_60) {
121 frameperiod->numerator = 1001;
122 frameperiod->denominator = 30000;
123 } else {
124 frameperiod->numerator = 1;
125 frameperiod->denominator = 25;
126 }
127}
128EXPORT_SYMBOL(v4l2_video_std_frame_period);
129
35ea11ff
HV		 130/* Fill in the fields of a v4l2_standard structure according to the
131 'id' and 'transmission' parameters. Returns negative on error. */
132int v4l2_video_std_construct(struct v4l2_standard *vs,
133 int id, const char *name)
134{
51f0b8d5
TP		 135 vs->id = id;
136 v4l2_video_std_frame_period(id, &vs->frameperiod);
137 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625;
35ea11ff
HV		 138 strlcpy(vs->name, name, sizeof(vs->name));
139 return 0;
140}
141EXPORT_SYMBOL(v4l2_video_std_construct);
142
143/* ----------------------------------------------------------------- */
144/* some arrays for pretty-printing debug messages of enum types */
145
146const char *v4l2_field_names[] = {
147 [V4L2_FIELD_ANY] = "any",
148 [V4L2_FIELD_NONE] = "none",
149 [V4L2_FIELD_TOP] = "top",
150 [V4L2_FIELD_BOTTOM] = "bottom",
151 [V4L2_FIELD_INTERLACED] = "interlaced",
152 [V4L2_FIELD_SEQ_TB] = "seq-tb",
153 [V4L2_FIELD_SEQ_BT] = "seq-bt",
154 [V4L2_FIELD_ALTERNATE] = "alternate",
155 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",
156 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",
157};
158EXPORT_SYMBOL(v4l2_field_names);
159
160const char *v4l2_type_names[] = {
161 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap",
162 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay",
163 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out",
164 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap",
165 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out",
166 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",
167 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out",
168 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay",
f8f3914c
PO		 169 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane",
170 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane",
35ea11ff
HV		 171};
172EXPORT_SYMBOL(v4l2_type_names);
173
174static const char *v4l2_memory_names[] = {
175 [V4L2_MEMORY_MMAP] = "mmap",
176 [V4L2_MEMORY_USERPTR] = "userptr",
177 [V4L2_MEMORY_OVERLAY] = "overlay",
178};
179
180#define prt_names(a, arr) ((((a) >= 0) && ((a) < ARRAY_SIZE(arr))) ? \
181 arr[a] : "unknown")
182
183/* ------------------------------------------------------------------ */
184/* debug help functions */
8ab75e3e 185
59076122
HV		 186static void v4l_print_querycap(const void *arg, bool write_only)
187{
188 const struct v4l2_capability *p = arg;
189
190 pr_cont("driver=%s, card=%s, bus=%s, version=0x%08x, "
191 "capabilities=0x%08x, device_caps=0x%08x\n",
192 p->driver, p->card, p->bus_info,
193 p->version, p->capabilities, p->device_caps);
194}
195
196static void v4l_print_enuminput(const void *arg, bool write_only)
197{
198 const struct v4l2_input *p = arg;
199
200 pr_cont("index=%u, name=%s, type=%u, audioset=0x%x, tuner=%u, "
201 "std=0x%08Lx, status=0x%x, capabilities=0x%x\n",
202 p->index, p->name, p->type, p->audioset, p->tuner,
203 (unsigned long long)p->std, p->status, p->capabilities);
204}
205
206static void v4l_print_enumoutput(const void *arg, bool write_only)
207{
208 const struct v4l2_output *p = arg;
209
210 pr_cont("index=%u, name=%s, type=%u, audioset=0x%x, "
211 "modulator=%u, std=0x%08Lx, capabilities=0x%x\n",
212 p->index, p->name, p->type, p->audioset, p->modulator,
213 (unsigned long long)p->std, p->capabilities);
214}
215
216static void v4l_print_audio(const void *arg, bool write_only)
217{
218 const struct v4l2_audio *p = arg;
219
220 if (write_only)
221 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode);
222 else
223 pr_cont("index=%u, name=%s, capability=0x%x, mode=0x%x\n",
224 p->index, p->name, p->capability, p->mode);
225}
226
227static void v4l_print_audioout(const void *arg, bool write_only)
228{
229 const struct v4l2_audioout *p = arg;
230
231 if (write_only)
232 pr_cont("index=%u\n", p->index);
233 else
234 pr_cont("index=%u, name=%s, capability=0x%x, mode=0x%x\n",
235 p->index, p->name, p->capability, p->mode);
236}
237
be6c64e4
HV		 238static void v4l_print_fmtdesc(const void *arg, bool write_only)
239{
240 const struct v4l2_fmtdesc *p = arg;
241
242 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%c%c%c%c, description='%s'\n",
243 p->index, prt_names(p->type, v4l2_type_names),
244 p->flags, (p->pixelformat & 0xff),
245 (p->pixelformat >> 8) & 0xff,
246 (p->pixelformat >> 16) & 0xff,
247 (p->pixelformat >> 24) & 0xff,
248 p->description);
249}
250
251static void v4l_print_format(const void *arg, bool write_only)
252{
253 const struct v4l2_format *p = arg;
254 const struct v4l2_pix_format *pix;
255 const struct v4l2_pix_format_mplane *mp;
256 const struct v4l2_vbi_format *vbi;
257 const struct v4l2_sliced_vbi_format *sliced;
258 const struct v4l2_window *win;
259 const struct v4l2_clip *clip;
260 unsigned i;
261
262 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
263 switch (p->type) {
264 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
265 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
266 pix = &p->fmt.pix;
267 pr_cont(", width=%u, height=%u, "
268 "pixelformat=%c%c%c%c, field=%s, "
269 "bytesperline=%u sizeimage=%u, colorspace=%d\n",
270 pix->width, pix->height,
271 (pix->pixelformat & 0xff),
272 (pix->pixelformat >> 8) & 0xff,
273 (pix->pixelformat >> 16) & 0xff,
274 (pix->pixelformat >> 24) & 0xff,
275 prt_names(pix->field, v4l2_field_names),
276 pix->bytesperline, pix->sizeimage,
277 pix->colorspace);
278 break;
279 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
280 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
281 mp = &p->fmt.pix_mp;
282 pr_cont(", width=%u, height=%u, "
283 "format=%c%c%c%c, field=%s, "
284 "colorspace=%d, num_planes=%u\n",
285 mp->width, mp->height,
286 (mp->pixelformat & 0xff),
287 (mp->pixelformat >> 8) & 0xff,
288 (mp->pixelformat >> 16) & 0xff,
289 (mp->pixelformat >> 24) & 0xff,
290 prt_names(mp->field, v4l2_field_names),
291 mp->colorspace, mp->num_planes);
292 for (i = 0; i < mp->num_planes; i++)
293 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i,
294 mp->plane_fmt[i].bytesperline,
295 mp->plane_fmt[i].sizeimage);
296 break;
297 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
298 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
299 win = &p->fmt.win;
300 pr_cont(", wxh=%dx%d, x,y=%d,%d, field=%s, "
301 "chromakey=0x%08x, bitmap=%p, "
302 "global_alpha=0x%02x\n",
303 win->w.width, win->w.height,
304 win->w.left, win->w.top,
305 prt_names(win->field, v4l2_field_names),
306 win->chromakey, win->bitmap, win->global_alpha);
307 clip = win->clips;
308 for (i = 0; i < win->clipcount; i++) {
309 printk(KERN_DEBUG "clip %u: wxh=%dx%d, x,y=%d,%d\n",
310 i, clip->c.width, clip->c.height,
311 clip->c.left, clip->c.top);
312 clip = clip->next;
313 }
314 break;
315 case V4L2_BUF_TYPE_VBI_CAPTURE:
316 case V4L2_BUF_TYPE_VBI_OUTPUT:
317 vbi = &p->fmt.vbi;
318 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, "
319 "sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n",
320 vbi->sampling_rate, vbi->offset,
321 vbi->samples_per_line,
322 (vbi->sample_format & 0xff),
323 (vbi->sample_format >> 8) & 0xff,
324 (vbi->sample_format >> 16) & 0xff,
325 (vbi->sample_format >> 24) & 0xff,
326 vbi->start[0], vbi->start[1],
327 vbi->count[0], vbi->count[1]);
328 break;
329 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
330 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
331 sliced = &p->fmt.sliced;
332 pr_cont(", service_set=0x%08x, io_size=%d\n",
333 sliced->service_set, sliced->io_size);
334 for (i = 0; i < 24; i++)
335 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
336 sliced->service_lines[0][i],
337 sliced->service_lines[1][i]);
338 break;
339 case V4L2_BUF_TYPE_PRIVATE:
340 pr_cont("\n");
341 break;
342 }
343}
344
345static void v4l_print_framebuffer(const void *arg, bool write_only)
346{
347 const struct v4l2_framebuffer *p = arg;
348
349 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, "
350 "height=%u, pixelformat=%c%c%c%c, "
351 "bytesperline=%u sizeimage=%u, colorspace=%d\n",
352 p->capability, p->flags, p->base,
353 p->fmt.width, p->fmt.height,
354 (p->fmt.pixelformat & 0xff),
355 (p->fmt.pixelformat >> 8) & 0xff,
356 (p->fmt.pixelformat >> 16) & 0xff,
357 (p->fmt.pixelformat >> 24) & 0xff,
358 p->fmt.bytesperline, p->fmt.sizeimage,
359 p->fmt.colorspace);
360}
361
e325b244
HV		 362static void v4l_print_buftype(const void *arg, bool write_only)
363{
364 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names));
365}
366
4b1e2e4d
HV		 367static void v4l_print_modulator(const void *arg, bool write_only)
368{
369 const struct v4l2_modulator *p = arg;
370
371 if (write_only)
372 pr_cont("index=%u, txsubchans=0x%x", p->index, p->txsubchans);
373 else
374 pr_cont("index=%u, name=%s, capability=0x%x, "
375 "rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
376 p->index, 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, "
388 "rangelow=%u, rangehigh=%u, signal=%u, afc=%d, "
389 "rxsubchans=0x%x, audmode=%u\n",
390 p->index, p->name, p->type,
391 p->capability, p->rangelow,
392 p->rangehigh, p->signal, p->afc,
393 p->rxsubchans, p->audmode);
394}
395
396static void v4l_print_frequency(const void *arg, bool write_only)
397{
398 const struct v4l2_frequency *p = arg;
399
400 pr_cont("tuner=%u, type=%u, frequency=%u\n",
401 p->tuner, p->type, p->frequency);
402}
403
404static void v4l_print_standard(const void *arg, bool write_only)
405{
406 const struct v4l2_standard *p = arg;
407
408 pr_cont("index=%u, id=0x%Lx, name=%s, fps=%u/%u, "
409 "framelines=%u\n", p->index,
410 (unsigned long long)p->id, p->name,
411 p->frameperiod.numerator,
412 p->frameperiod.denominator,
413 p->framelines);
414}
415
416static void v4l_print_std(const void *arg, bool write_only)
417{
418 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg);
419}
420
421static void v4l_print_hw_freq_seek(const void *arg, bool write_only)
422{
423 const struct v4l2_hw_freq_seek *p = arg;
424
425 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u\n",
426 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing);
427}
428
eb3728ed 429static void v4l_print_requestbuffers(const void *arg, bool write_only)
59076122 430{
eb3728ed
HV		 431 const struct v4l2_requestbuffers *p = arg;
432
433 pr_cont("count=%d, type=%s, memory=%s\n",
434 p->count,
435 prt_names(p->type, v4l2_type_names),
436 prt_names(p->memory, v4l2_memory_names));
59076122
HV		 437}
438
eb3728ed 439static void v4l_print_buffer(const void *arg, bool write_only)
35ea11ff 440{
eb3728ed
HV		 441 const struct v4l2_buffer *p = arg;
442 const struct v4l2_timecode *tc = &p->timecode;
443 const struct v4l2_plane *plane;
d14e6d76 444 int i;
35ea11ff 445
eb3728ed
HV		 446 pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, "
447 "flags=0x%08x, field=%s, sequence=%d, memory=%s",
35ea11ff
HV		 448 p->timestamp.tv_sec / 3600,
449 (int)(p->timestamp.tv_sec / 60) % 60,
450 (int)(p->timestamp.tv_sec % 60),
b045979d 451 (long)p->timestamp.tv_usec,
35ea11ff
HV		 452 p->index,
453 prt_names(p->type, v4l2_type_names),
eb3728ed
HV		 454 p->flags, prt_names(p->field, v4l2_field_names),
455 p->sequence, prt_names(p->memory, v4l2_memory_names));
d14e6d76
PO		 456
457 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
eb3728ed 458 pr_cont("\n");
d14e6d76
PO		 459 for (i = 0; i < p->length; ++i) {
460 plane = &p->m.planes[i];
eb3728ed
HV		 461 printk(KERN_DEBUG
462 "plane %d: bytesused=%d, data_offset=0x%08x "
463 "offset/userptr=0x%lx, length=%d\n",
d14e6d76
PO		 464 i, plane->bytesused, plane->data_offset,
465 plane->m.userptr, plane->length);
466 }
467 } else {
eb3728ed 468 pr_cont("bytesused=%d, offset/userptr=0x%lx, length=%d\n",
d14e6d76
PO		 469 p->bytesused, p->m.userptr, p->length);
470 }
471
eb3728ed
HV		 472 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, "
473 "flags=0x%08x, frames=%d, userbits=0x%08x\n",
35ea11ff
HV		 474 tc->hours, tc->minutes, tc->seconds,
475 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
476}
477
eb3728ed
HV		 478static void v4l_print_create_buffers(const void *arg, bool write_only)
479{
480 const struct v4l2_create_buffers *p = arg;
481
482 pr_cont("index=%d, count=%d, memory=%s, ",
483 p->index, p->count,
484 prt_names(p->memory, v4l2_memory_names));
485 v4l_print_format(&p->format, write_only);
486}
487
488static void v4l_print_streamparm(const void *arg, bool write_only)
489{
490 const struct v4l2_streamparm *p = arg;
491
492 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
493
494 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
495 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
496 const struct v4l2_captureparm *c = &p->parm.capture;
497
498 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, "
499 "extendedmode=%d, readbuffers=%d\n",
500 c->capability, c->capturemode,
501 c->timeperframe.numerator, c->timeperframe.denominator,
502 c->extendedmode, c->readbuffers);
503 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
504 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
505 const struct v4l2_outputparm *c = &p->parm.output;
506
507 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, "
508 "extendedmode=%d, writebuffers=%d\n",
509 c->capability, c->outputmode,
510 c->timeperframe.numerator, c->timeperframe.denominator,
511 c->extendedmode, c->writebuffers);
512 }
513}
514
efbceecd
HV		 515static void v4l_print_queryctrl(const void *arg, bool write_only)
516{
517 const struct v4l2_queryctrl *p = arg;
518
519 pr_cont("id=0x%x, type=%d, name=%s, min/max=%d/%d, "
520 "step=%d, default=%d, flags=0x%08x\n",
521 p->id, p->type, p->name,
522 p->minimum, p->maximum,
523 p->step, p->default_value, p->flags);
524}
525
526static void v4l_print_querymenu(const void *arg, bool write_only)
527{
528 const struct v4l2_querymenu *p = arg;
529
530 pr_cont("id=0x%x, index=%d\n", p->id, p->index);
531}
532
533static void v4l_print_control(const void *arg, bool write_only)
534{
535 const struct v4l2_control *p = arg;
536
537 pr_cont("id=0x%x, value=%d\n", p->id, p->value);
538}
539
540static void v4l_print_ext_controls(const void *arg, bool write_only)
541{
542 const struct v4l2_ext_controls *p = arg;
543 int i;
544
545 pr_cont("class=0x%x, count=%d, error_idx=%d",
546 p->ctrl_class, p->count, p->error_idx);
547 for (i = 0; i < p->count; i++) {
548 if (p->controls[i].size)
549 pr_cont(", id/val=0x%x/0x%x",
550 p->controls[i].id, p->controls[i].value);
551 else
552 pr_cont(", id/size=0x%x/%u",
553 p->controls[i].id, p->controls[i].size);
554 }
555 pr_cont("\n");
556}
557
d84f2d94 558static void v4l_print_cropcap(const void *arg, bool write_only)
eb3728ed 559{
d84f2d94
HV		 560 const struct v4l2_cropcap *p = arg;
561
562 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, "
563 "defrect wxh=%dx%d, x,y=%d,%d\n, "
564 "pixelaspect %d/%d\n",
565 prt_names(p->type, v4l2_type_names),
566 p->bounds.width, p->bounds.height,
567 p->bounds.left, p->bounds.top,
568 p->defrect.width, p->defrect.height,
569 p->defrect.left, p->defrect.top,
570 p->pixelaspect.numerator, p->pixelaspect.denominator);
eb3728ed
HV		 571}
572
d84f2d94 573static void v4l_print_crop(const void *arg, bool write_only)
35ea11ff 574{
d84f2d94
HV		 575 const struct v4l2_crop *p = arg;
576
577 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n",
578 prt_names(p->type, v4l2_type_names),
579 p->c.width, p->c.height,
580 p->c.left, p->c.top);
581}
582
583static void v4l_print_selection(const void *arg, bool write_only)
584{
585 const struct v4l2_selection *p = arg;
586
587 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n",
588 prt_names(p->type, v4l2_type_names),
589 p->target, p->flags,
590 p->r.width, p->r.height, p->r.left, p->r.top);
591}
592
d806f2df
HV		 593static void v4l_print_jpegcompression(const void *arg, bool write_only)
594{
595 const struct v4l2_jpegcompression *p = arg;
596
597 pr_cont("quality=%d, APPn=%d, APP_len=%d, "
598 "COM_len=%d, jpeg_markers=0x%x\n",
599 p->quality, p->APPn, p->APP_len,
600 p->COM_len, p->jpeg_markers);
601}
602
603static void v4l_print_enc_idx(const void *arg, bool write_only)
604{
605 const struct v4l2_enc_idx *p = arg;
606
607 pr_cont("entries=%d, entries_cap=%d\n",
608 p->entries, p->entries_cap);
609}
610
611static void v4l_print_encoder_cmd(const void *arg, bool write_only)
612{
613 const struct v4l2_encoder_cmd *p = arg;
614
615 pr_cont("cmd=%d, flags=0x%x\n",
616 p->cmd, p->flags);
617}
618
619static void v4l_print_decoder_cmd(const void *arg, bool write_only)
620{
621 const struct v4l2_decoder_cmd *p = arg;
622
623 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags);
624
625 if (p->cmd == V4L2_DEC_CMD_START)
626 pr_info("speed=%d, format=%u\n",
627 p->start.speed, p->start.format);
628 else if (p->cmd == V4L2_DEC_CMD_STOP)
629 pr_info("pts=%llu\n", p->stop.pts);
630}
631
f16f77b0
HV		 632static void v4l_print_dbg_chip_ident(const void *arg, bool write_only)
633{
634 const struct v4l2_dbg_chip_ident *p = arg;
635
636 pr_cont("type=%u, ", p->match.type);
637 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
638 pr_cont("name=%s, ", p->match.name);
639 else
640 pr_cont("addr=%u, ", p->match.addr);
641 pr_cont("chip_ident=%u, revision=0x%x\n",
642 p->ident, p->revision);
643}
644
645static void v4l_print_dbg_register(const void *arg, bool write_only)
646{
647 const struct v4l2_dbg_register *p = arg;
648
649 pr_cont("type=%u, ", p->match.type);
650 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
651 pr_cont("name=%s, ", p->match.name);
652 else
653 pr_cont("addr=%u, ", p->match.addr);
654 pr_cont("reg=0x%llx, val=0x%llx\n",
655 p->reg, p->val);
656}
657
efc626b0 658static void v4l_print_dv_enum_presets(const void *arg, bool write_only)
d84f2d94 659{
efc626b0
HV		 660 const struct v4l2_dv_enum_preset *p = arg;
661
662 pr_cont("index=%u, preset=%u, name=%s, width=%u, height=%u\n",
663 p->index, p->preset, p->name, p->width, p->height);
d84f2d94 664}
35ea11ff 665
efc626b0 666static void v4l_print_dv_preset(const void *arg, bool write_only)
f16f77b0 667{
efc626b0
HV		 668 const struct v4l2_dv_preset *p = arg;
669
670 pr_cont("preset=%u\n", p->preset);
f16f77b0
HV		 671}
672
efc626b0 673static void v4l_print_dv_timings(const void *arg, bool write_only)
5d7758ee 674{
efc626b0
HV		 675 const struct v4l2_dv_timings *p = arg;
676
5d7758ee
HV		 677 switch (p->type) {
678 case V4L2_DV_BT_656_1120:
efc626b0
HV		 679 pr_cont("type=bt-656/1120, interlaced=%u, "
680 "pixelclock=%llu, "
681 "width=%u, height=%u, polarities=0x%x, "
682 "hfrontporch=%u, hsync=%u, "
683 "hbackporch=%u, vfrontporch=%u, "
684 "vsync=%u, vbackporch=%u, "
685 "il_vfrontporch=%u, il_vsync=%u, "
686 "il_vbackporch=%u, standards=0x%x, flags=0x%x\n",
5d7758ee
HV		 687 p->bt.interlaced, p->bt.pixelclock,
688 p->bt.width, p->bt.height,
689 p->bt.polarities, p->bt.hfrontporch,
690 p->bt.hsync, p->bt.hbackporch,
691 p->bt.vfrontporch, p->bt.vsync,
692 p->bt.vbackporch, p->bt.il_vfrontporch,
693 p->bt.il_vsync, p->bt.il_vbackporch,
694 p->bt.standards, p->bt.flags);
695 break;
696 default:
efc626b0 697 pr_cont("type=%d\n", p->type);
5d7758ee
HV		 698 break;
699 }
700}
701
efc626b0
HV		 702static void v4l_print_enum_dv_timings(const void *arg, bool write_only)
703{
704 const struct v4l2_enum_dv_timings *p = arg;
705
706 pr_cont("index=%u, ", p->index);
707 v4l_print_dv_timings(&p->timings, write_only);
708}
709
710static void v4l_print_dv_timings_cap(const void *arg, bool write_only)
711{
712 const struct v4l2_dv_timings_cap *p = arg;
713
714 switch (p->type) {
715 case V4L2_DV_BT_656_1120:
716 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, "
717 "pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
718 p->bt.min_width, p->bt.max_width,
719 p->bt.min_height, p->bt.max_height,
720 p->bt.min_pixelclock, p->bt.max_pixelclock,
721 p->bt.standards, p->bt.capabilities);
722 break;
723 default:
724 pr_cont("type=%u\n", p->type);
725 break;
726 }
727}
728
729static void v4l_print_u32(const void *arg, bool write_only)
730{
731 pr_cont("value=%u\n", *(const u32 *)arg);
732}
733
734static void v4l_print_newline(const void *arg, bool write_only)
735{
736 pr_cont("\n");
737}
738
efbceecd 739static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
35ea11ff
HV		 740{
741 __u32 i;
742
743 /* zero the reserved fields */
744 c->reserved[0] = c->reserved[1] = 0;
6b5a9492 745 for (i = 0; i < c->count; i++)
35ea11ff 746 c->controls[i].reserved2[0] = 0;
6b5a9492 747
35ea11ff
HV		 748 /* V4L2_CID_PRIVATE_BASE cannot be used as control class
749 when using extended controls.
750 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
751 is it allowed for backwards compatibility.
752 */
753 if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE)
754 return 0;
755 /* Check that all controls are from the same control class. */
756 for (i = 0; i < c->count; i++) {
757 if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) {
758 c->error_idx = i;
759 return 0;
760 }
761 }
762 return 1;
763}
764
a399810c 765static int check_fmt(const struct v4l2_ioctl_ops *ops, enum v4l2_buf_type type)
35ea11ff 766{
a399810c
HV		 767 if (ops == NULL)
768 return -EINVAL;
769
35ea11ff
HV		 770 switch (type) {
771 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
d14e6d76
PO		 772 if (ops->vidioc_g_fmt_vid_cap ||
773 ops->vidioc_g_fmt_vid_cap_mplane)
774 return 0;
775 break;
776 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
777 if (ops->vidioc_g_fmt_vid_cap_mplane)
35ea11ff
HV		 778 return 0;
779 break;
780 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1175d613 781 if (ops->vidioc_g_fmt_vid_overlay)
35ea11ff
HV		 782 return 0;
783 break;
784 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
d14e6d76
PO		 785 if (ops->vidioc_g_fmt_vid_out ||
786 ops->vidioc_g_fmt_vid_out_mplane)
787 return 0;
788 break;
789 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
790 if (ops->vidioc_g_fmt_vid_out_mplane)
35ea11ff
HV		 791 return 0;
792 break;
793 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1175d613 794 if (ops->vidioc_g_fmt_vid_out_overlay)
35ea11ff
HV		 795 return 0;
796 break;
797 case V4L2_BUF_TYPE_VBI_CAPTURE:
1175d613 798 if (ops->vidioc_g_fmt_vbi_cap)
35ea11ff
HV		 799 return 0;
800 break;
801 case V4L2_BUF_TYPE_VBI_OUTPUT:
1175d613 802 if (ops->vidioc_g_fmt_vbi_out)
35ea11ff
HV		 803 return 0;
804 break;
805 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1175d613 806 if (ops->vidioc_g_fmt_sliced_vbi_cap)
35ea11ff
HV		 807 return 0;
808 break;
809 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1175d613 810 if (ops->vidioc_g_fmt_sliced_vbi_out)
35ea11ff
HV		 811 return 0;
812 break;
813 case V4L2_BUF_TYPE_PRIVATE:
1175d613 814 if (ops->vidioc_g_fmt_type_private)
35ea11ff
HV		 815 return 0;
816 break;
817 }
818 return -EINVAL;
819}
820
59076122
HV		 821static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
822 struct file *file, void *fh, void *arg)
823{
824 struct v4l2_capability *cap = (struct v4l2_capability *)arg;
825
826 cap->version = LINUX_VERSION_CODE;
827 return ops->vidioc_querycap(file, fh, cap);
828}
829
830static int v4l_s_input(const struct v4l2_ioctl_ops *ops,
831 struct file *file, void *fh, void *arg)
832{
833 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg);
834}
835
836static int v4l_s_output(const struct v4l2_ioctl_ops *ops,
837 struct file *file, void *fh, void *arg)
838{
839 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg);
840}
841
d0547cba
HV		 842static int v4l_g_priority(const struct v4l2_ioctl_ops *ops,
843 struct file *file, void *fh, void *arg)
844{
845 struct video_device *vfd;
846 u32 *p = arg;
847
848 if (ops->vidioc_g_priority)
849 return ops->vidioc_g_priority(file, fh, arg);
850 vfd = video_devdata(file);
851 *p = v4l2_prio_max(&vfd->v4l2_dev->prio);
852 return 0;
853}
854
855static int v4l_s_priority(const struct v4l2_ioctl_ops *ops,
856 struct file *file, void *fh, void *arg)
857{
858 struct video_device *vfd;
859 struct v4l2_fh *vfh;
860 u32 *p = arg;
861
862 if (ops->vidioc_s_priority)
863 return ops->vidioc_s_priority(file, fh, *p);
864 vfd = video_devdata(file);
865 vfh = file->private_data;
866 return v4l2_prio_change(&vfd->v4l2_dev->prio, &vfh->prio, *p);
867}
868
59076122
HV		 869static int v4l_enuminput(const struct v4l2_ioctl_ops *ops,
870 struct file *file, void *fh, void *arg)
871{
872 struct v4l2_input *p = arg;
873
874 /*
875 * We set the flags for CAP_PRESETS, CAP_CUSTOM_TIMINGS &
876 * CAP_STD here based on ioctl handler provided by the
877 * driver. If the driver doesn't support these
878 * for a specific input, it must override these flags.
879 */
880 if (ops->vidioc_s_std)
881 p->capabilities |= V4L2_IN_CAP_STD;
882 if (ops->vidioc_s_dv_preset)
883 p->capabilities |= V4L2_IN_CAP_PRESETS;
884 if (ops->vidioc_s_dv_timings)
885 p->capabilities |= V4L2_IN_CAP_CUSTOM_TIMINGS;
886
887 return ops->vidioc_enum_input(file, fh, p);
888}
889
890static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops,
891 struct file *file, void *fh, void *arg)
892{
893 struct v4l2_output *p = arg;
894
895 /*
896 * We set the flags for CAP_PRESETS, CAP_CUSTOM_TIMINGS &
897 * CAP_STD here based on ioctl handler provided by the
898 * driver. If the driver doesn't support these
899 * for a specific output, it must override these flags.
900 */
901 if (ops->vidioc_s_std)
902 p->capabilities |= V4L2_OUT_CAP_STD;
903 if (ops->vidioc_s_dv_preset)
904 p->capabilities |= V4L2_OUT_CAP_PRESETS;
905 if (ops->vidioc_s_dv_timings)
906 p->capabilities |= V4L2_OUT_CAP_CUSTOM_TIMINGS;
907
908 return ops->vidioc_enum_output(file, fh, p);
909}
910
be6c64e4
HV		 911static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
912 struct file *file, void *fh, void *arg)
913{
914 struct v4l2_fmtdesc *p = arg;
915
916 switch (p->type) {
917 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
918 if (unlikely(!ops->vidioc_enum_fmt_vid_cap))
919 break;
920 return ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
921 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
922 if (unlikely(!ops->vidioc_enum_fmt_vid_cap_mplane))
923 break;
924 return ops->vidioc_enum_fmt_vid_cap_mplane(file, fh, arg);
925 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
926 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay))
927 break;
928 return ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
929 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
930 if (unlikely(!ops->vidioc_enum_fmt_vid_out))
931 break;
932 return ops->vidioc_enum_fmt_vid_out(file, fh, arg);
933 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
934 if (unlikely(!ops->vidioc_enum_fmt_vid_out_mplane))
935 break;
936 return ops->vidioc_enum_fmt_vid_out_mplane(file, fh, arg);
937 case V4L2_BUF_TYPE_PRIVATE:
938 if (unlikely(!ops->vidioc_enum_fmt_type_private))
939 break;
940 return ops->vidioc_enum_fmt_type_private(file, fh, arg);
941 }
942 return -EINVAL;
943}
944
945static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
946 struct file *file, void *fh, void *arg)
947{
948 struct v4l2_format *p = arg;
949
950 switch (p->type) {
951 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
952 if (unlikely(!ops->vidioc_g_fmt_vid_cap))
953 break;
954 return ops->vidioc_g_fmt_vid_cap(file, fh, arg);
955 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
956 if (unlikely(!ops->vidioc_g_fmt_vid_cap_mplane))
957 break;
958 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
959 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
960 if (unlikely(!ops->vidioc_g_fmt_vid_overlay))
961 break;
962 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
963 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
964 if (unlikely(!ops->vidioc_g_fmt_vid_out))
965 break;
966 return ops->vidioc_g_fmt_vid_out(file, fh, arg);
967 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
968 if (unlikely(!ops->vidioc_g_fmt_vid_out_mplane))
969 break;
970 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
971 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
972 if (unlikely(!ops->vidioc_g_fmt_vid_out_overlay))
973 break;
974 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
975 case V4L2_BUF_TYPE_VBI_CAPTURE:
976 if (unlikely(!ops->vidioc_g_fmt_vbi_cap))
977 break;
978 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
979 case V4L2_BUF_TYPE_VBI_OUTPUT:
980 if (unlikely(!ops->vidioc_g_fmt_vbi_out))
981 break;
982 return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
983 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
984 if (unlikely(!ops->vidioc_g_fmt_sliced_vbi_cap))
985 break;
986 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
987 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
988 if (unlikely(!ops->vidioc_g_fmt_sliced_vbi_out))
989 break;
990 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
991 case V4L2_BUF_TYPE_PRIVATE:
992 if (unlikely(!ops->vidioc_g_fmt_type_private))
993 break;
994 return ops->vidioc_g_fmt_type_private(file, fh, arg);
995 }
996 return -EINVAL;
997}
998
999static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
1000 struct file *file, void *fh, void *arg)
1001{
1002 struct v4l2_format *p = arg;
1003
1004 switch (p->type) {
1005 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1006 if (unlikely(!ops->vidioc_s_fmt_vid_cap))
1007 break;
1008 CLEAR_AFTER_FIELD(p, fmt.pix);
1009 return ops->vidioc_s_fmt_vid_cap(file, fh, arg);
1010 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1011 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane))
1012 break;
1013 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1014 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
1015 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1016 if (unlikely(!ops->vidioc_s_fmt_vid_overlay))
1017 break;
1018 CLEAR_AFTER_FIELD(p, fmt.win);
1019 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
1020 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1021 if (unlikely(!ops->vidioc_s_fmt_vid_out))
1022 break;
1023 CLEAR_AFTER_FIELD(p, fmt.pix);
1024 return ops->vidioc_s_fmt_vid_out(file, fh, arg);
1025 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1026 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane))
1027 break;
1028 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1029 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
1030 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1031 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay))
1032 break;
1033 CLEAR_AFTER_FIELD(p, fmt.win);
1034 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
1035 case V4L2_BUF_TYPE_VBI_CAPTURE:
1036 if (unlikely(!ops->vidioc_s_fmt_vbi_cap))
1037 break;
1038 CLEAR_AFTER_FIELD(p, fmt.vbi);
1039 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
1040 case V4L2_BUF_TYPE_VBI_OUTPUT:
1041 if (unlikely(!ops->vidioc_s_fmt_vbi_out))
1042 break;
1043 CLEAR_AFTER_FIELD(p, fmt.vbi);
1044 return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
1045 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1046 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap))
1047 break;
1048 CLEAR_AFTER_FIELD(p, fmt.sliced);
1049 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
1050 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1051 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out))
1052 break;
1053 CLEAR_AFTER_FIELD(p, fmt.sliced);
1054 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
1055 case V4L2_BUF_TYPE_PRIVATE:
1056 if (unlikely(!ops->vidioc_s_fmt_type_private))
1057 break;
1058 return ops->vidioc_s_fmt_type_private(file, fh, arg);
1059 }
1060 return -EINVAL;
1061}
1062
1063static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
1064 struct file *file, void *fh, void *arg)
1065{
1066 struct v4l2_format *p = arg;
1067
1068 switch (p->type) {
1069 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1070 if (unlikely(!ops->vidioc_try_fmt_vid_cap))
1071 break;
1072 CLEAR_AFTER_FIELD(p, fmt.pix);
1073 return ops->vidioc_try_fmt_vid_cap(file, fh, arg);
1074 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1075 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane))
1076 break;
1077 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1078 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
1079 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1080 if (unlikely(!ops->vidioc_try_fmt_vid_overlay))
1081 break;
1082 CLEAR_AFTER_FIELD(p, fmt.win);
1083 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
1084 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1085 if (unlikely(!ops->vidioc_try_fmt_vid_out))
1086 break;
1087 CLEAR_AFTER_FIELD(p, fmt.pix);
1088 return ops->vidioc_try_fmt_vid_out(file, fh, arg);
1089 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1090 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane))
1091 break;
1092 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1093 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
1094 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1095 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay))
1096 break;
1097 CLEAR_AFTER_FIELD(p, fmt.win);
1098 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
1099 case V4L2_BUF_TYPE_VBI_CAPTURE:
1100 if (unlikely(!ops->vidioc_try_fmt_vbi_cap))
1101 break;
1102 CLEAR_AFTER_FIELD(p, fmt.vbi);
1103 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
1104 case V4L2_BUF_TYPE_VBI_OUTPUT:
1105 if (unlikely(!ops->vidioc_try_fmt_vbi_out))
1106 break;
1107 CLEAR_AFTER_FIELD(p, fmt.vbi);
1108 return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
1109 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1110 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap))
1111 break;
1112 CLEAR_AFTER_FIELD(p, fmt.sliced);
1113 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
1114 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1115 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out))
1116 break;
1117 CLEAR_AFTER_FIELD(p, fmt.sliced);
1118 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
1119 case V4L2_BUF_TYPE_PRIVATE:
1120 if (unlikely(!ops->vidioc_try_fmt_type_private))
1121 break;
1122 return ops->vidioc_try_fmt_type_private(file, fh, arg);
1123 }
1124 return -EINVAL;
1125}
1126
e325b244
HV		 1127static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
1128 struct file *file, void *fh, void *arg)
1129{
1130 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
1131}
1132
1133static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
1134 struct file *file, void *fh, void *arg)
1135{
1136 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
1137}
1138
4b1e2e4d
HV		 1139static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,
1140 struct file *file, void *fh, void *arg)
1141{
1142 struct video_device *vfd = video_devdata(file);
1143 struct v4l2_tuner *p = arg;
1144
1145 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1146 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1147 return ops->vidioc_g_tuner(file, fh, p);
1148}
1149
1150static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
1151 struct file *file, void *fh, void *arg)
1152{
1153 struct video_device *vfd = video_devdata(file);
1154 struct v4l2_tuner *p = arg;
1155
1156 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1157 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1158 return ops->vidioc_s_tuner(file, fh, p);
1159}
1160
1161static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
1162 struct file *file, void *fh, void *arg)
1163{
1164 struct video_device *vfd = video_devdata(file);
1165 struct v4l2_frequency *p = arg;
1166
1167 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1168 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1169 return ops->vidioc_g_frequency(file, fh, p);
1170}
1171
1172static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
1173 struct file *file, void *fh, void *arg)
1174{
1175 struct video_device *vfd = video_devdata(file);
1176 struct v4l2_frequency *p = arg;
1177 enum v4l2_tuner_type type;
1178
1179 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1180 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1181 if (p->type != type)
1182 return -EINVAL;
1183 return ops->vidioc_s_frequency(file, fh, p);
1184}
1185
1186static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
1187 struct file *file, void *fh, void *arg)
1188{
1189 struct video_device *vfd = video_devdata(file);
1190 struct v4l2_standard *p = arg;
1191 v4l2_std_id id = vfd->tvnorms, curr_id = 0;
1192 unsigned int index = p->index, i, j = 0;
1193 const char *descr = "";
1194
1195 /* Return norm array in a canonical way */
1196 for (i = 0; i <= index && id; i++) {
1197 /* last std value in the standards array is 0, so this
1198 while always ends there since (id & 0) == 0. */
1199 while ((id & standards[j].std) != standards[j].std)
1200 j++;
1201 curr_id = standards[j].std;
1202 descr = standards[j].descr;
1203 j++;
1204 if (curr_id == 0)
1205 break;
1206 if (curr_id != V4L2_STD_PAL &&
1207 curr_id != V4L2_STD_SECAM &&
1208 curr_id != V4L2_STD_NTSC)
1209 id &= ~curr_id;
1210 }
1211 if (i <= index)
1212 return -EINVAL;
1213
1214 v4l2_video_std_construct(p, curr_id, descr);
1215 return 0;
1216}
1217
1218static int v4l_g_std(const struct v4l2_ioctl_ops *ops,
1219 struct file *file, void *fh, void *arg)
1220{
1221 struct video_device *vfd = video_devdata(file);
1222 v4l2_std_id *id = arg;
1223
1224 /* Calls the specific handler */
1225 if (ops->vidioc_g_std)
1226 return ops->vidioc_g_std(file, fh, arg);
1227 if (vfd->current_norm) {
1228 *id = vfd->current_norm;
1229 return 0;
1230 }
1231 return -ENOTTY;
1232}
1233
1234static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
1235 struct file *file, void *fh, void *arg)
1236{
1237 struct video_device *vfd = video_devdata(file);
1238 v4l2_std_id *id = arg, norm;
1239 int ret;
1240
1241 norm = (*id) & vfd->tvnorms;
1242 if (vfd->tvnorms && !norm) /* Check if std is supported */
1243 return -EINVAL;
1244
1245 /* Calls the specific handler */
1246 ret = ops->vidioc_s_std(file, fh, &norm);
1247
1248 /* Updates standard information */
1249 if (ret >= 0)
1250 vfd->current_norm = norm;
1251 return ret;
1252}
1253
1254static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
1255 struct file *file, void *fh, void *arg)
1256{
1257 struct video_device *vfd = video_devdata(file);
1258 v4l2_std_id *p = arg;
1259
1260 /*
1261 * If nothing detected, it should return all supported
1262 * standard.
1263 * Drivers just need to mask the std argument, in order
1264 * to remove the standards that don't apply from the mask.
1265 * This means that tuners, audio and video decoders can join
1266 * their efforts to improve the standards detection.
1267 */
1268 *p = vfd->tvnorms;
1269 return ops->vidioc_querystd(file, fh, arg);
1270}
1271
1272static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
1273 struct file *file, void *fh, void *arg)
1274{
1275 struct video_device *vfd = video_devdata(file);
1276 struct v4l2_hw_freq_seek *p = arg;
1277 enum v4l2_tuner_type type;
1278
1279 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1280 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1281 if (p->type != type)
1282 return -EINVAL;
1283 return ops->vidioc_s_hw_freq_seek(file, fh, p);
1284}
1285
eb3728ed
HV		 1286static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,
1287 struct file *file, void *fh, void *arg)
1288{
1289 struct v4l2_requestbuffers *p = arg;
1290 int ret = check_fmt(ops, p->type);
1291
1292 if (ret)
1293 return ret;
1294
1295 if (p->type < V4L2_BUF_TYPE_PRIVATE)
1296 CLEAR_AFTER_FIELD(p, memory);
1297
1298 return ops->vidioc_reqbufs(file, fh, p);
1299}
1300
1301static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,
1302 struct file *file, void *fh, void *arg)
1303{
1304 struct v4l2_buffer *p = arg;
1305 int ret = check_fmt(ops, p->type);
1306
1307 return ret ? ret : ops->vidioc_querybuf(file, fh, p);
1308}
1309
1310static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,
1311 struct file *file, void *fh, void *arg)
1312{
1313 struct v4l2_buffer *p = arg;
1314 int ret = check_fmt(ops, p->type);
1315
1316 return ret ? ret : ops->vidioc_qbuf(file, fh, p);
1317}
1318
1319static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,
1320 struct file *file, void *fh, void *arg)
1321{
1322 struct v4l2_buffer *p = arg;
1323 int ret = check_fmt(ops, p->type);
1324
1325 return ret ? ret : ops->vidioc_dqbuf(file, fh, p);
1326}
1327
1328static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
1329 struct file *file, void *fh, void *arg)
1330{
1331 struct v4l2_create_buffers *create = arg;
1332 int ret = check_fmt(ops, create->format.type);
1333
1334 return ret ? ret : ops->vidioc_create_bufs(file, fh, create);
1335}
1336
1337static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
1338 struct file *file, void *fh, void *arg)
1339{
1340 struct v4l2_buffer *b = arg;
1341 int ret = check_fmt(ops, b->type);
1342
1343 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
1344}
1345
1346static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
1347 struct file *file, void *fh, void *arg)
1348{
1349 struct video_device *vfd = video_devdata(file);
1350 struct v4l2_streamparm *p = arg;
1351 v4l2_std_id std;
1352 int ret = check_fmt(ops, p->type);
1353
1354 if (ret)
1355 return ret;
1356 if (ops->vidioc_g_parm)
1357 return ops->vidioc_g_parm(file, fh, p);
1358 std = vfd->current_norm;
1359 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1360 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1361 return -EINVAL;
1362 p->parm.capture.readbuffers = 2;
1363 if (ops->vidioc_g_std)
1364 ret = ops->vidioc_g_std(file, fh, &std);
1365 if (ret == 0)
1366 v4l2_video_std_frame_period(std,
1367 &p->parm.capture.timeperframe);
1368 return ret;
1369}
1370
1371static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
1372 struct file *file, void *fh, void *arg)
1373{
1374 struct v4l2_streamparm *p = arg;
1375 int ret = check_fmt(ops, p->type);
1376
1377 return ret ? ret : ops->vidioc_s_parm(file, fh, p);
1378}
1379
efbceecd
HV		 1380static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,
1381 struct file *file, void *fh, void *arg)
1382{
1383 struct video_device *vfd = video_devdata(file);
1384 struct v4l2_queryctrl *p = arg;
1385 struct v4l2_fh *vfh = fh;
1386
1387 if (vfh && vfh->ctrl_handler)
1388 return v4l2_queryctrl(vfh->ctrl_handler, p);
1389 if (vfd->ctrl_handler)
1390 return v4l2_queryctrl(vfd->ctrl_handler, p);
1391 if (ops->vidioc_queryctrl)
1392 return ops->vidioc_queryctrl(file, fh, p);
1393 return -ENOTTY;
1394}
1395
1396static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,
1397 struct file *file, void *fh, void *arg)
1398{
1399 struct video_device *vfd = video_devdata(file);
1400 struct v4l2_querymenu *p = arg;
1401 struct v4l2_fh *vfh = fh;
1402
1403 if (vfh && vfh->ctrl_handler)
1404 return v4l2_querymenu(vfh->ctrl_handler, p);
1405 if (vfd->ctrl_handler)
1406 return v4l2_querymenu(vfd->ctrl_handler, p);
1407 if (ops->vidioc_querymenu)
1408 return ops->vidioc_querymenu(file, fh, p);
1409 return -ENOTTY;
1410}
1411
1412static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops,
1413 struct file *file, void *fh, void *arg)
1414{
1415 struct video_device *vfd = video_devdata(file);
1416 struct v4l2_control *p = arg;
1417 struct v4l2_fh *vfh = fh;
1418 struct v4l2_ext_controls ctrls;
1419 struct v4l2_ext_control ctrl;
1420
1421 if (vfh && vfh->ctrl_handler)
1422 return v4l2_g_ctrl(vfh->ctrl_handler, p);
1423 if (vfd->ctrl_handler)
1424 return v4l2_g_ctrl(vfd->ctrl_handler, p);
1425 if (ops->vidioc_g_ctrl)
1426 return ops->vidioc_g_ctrl(file, fh, p);
1427 if (ops->vidioc_g_ext_ctrls == NULL)
1428 return -ENOTTY;
1429
1430 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1431 ctrls.count = 1;
1432 ctrls.controls = &ctrl;
1433 ctrl.id = p->id;
1434 ctrl.value = p->value;
1435 if (check_ext_ctrls(&ctrls, 1)) {
1436 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
1437
1438 if (ret == 0)
1439 p->value = ctrl.value;
1440 return ret;
1441 }
1442 return -EINVAL;
1443}
1444
1445static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,
1446 struct file *file, void *fh, void *arg)
1447{
1448 struct video_device *vfd = video_devdata(file);
1449 struct v4l2_control *p = arg;
1450 struct v4l2_fh *vfh = fh;
1451 struct v4l2_ext_controls ctrls;
1452 struct v4l2_ext_control ctrl;
1453
1454 if (vfh && vfh->ctrl_handler)
1455 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
1456 if (vfd->ctrl_handler)
1457 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
1458 if (ops->vidioc_s_ctrl)
1459 return ops->vidioc_s_ctrl(file, fh, p);
1460 if (ops->vidioc_s_ext_ctrls == NULL)
1461 return -ENOTTY;
1462
1463 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1464 ctrls.count = 1;
1465 ctrls.controls = &ctrl;
1466 ctrl.id = p->id;
1467 ctrl.value = p->value;
1468 if (check_ext_ctrls(&ctrls, 1))
1469 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
1470 return -EINVAL;
1471}
1472
1473static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1474 struct file *file, void *fh, void *arg)
1475{
1476 struct video_device *vfd = video_devdata(file);
1477 struct v4l2_ext_controls *p = arg;
1478 struct v4l2_fh *vfh = fh;
1479
1480 p->error_idx = p->count;
1481 if (vfh && vfh->ctrl_handler)
1482 return v4l2_g_ext_ctrls(vfh->ctrl_handler, p);
1483 if (vfd->ctrl_handler)
1484 return v4l2_g_ext_ctrls(vfd->ctrl_handler, p);
1485 if (ops->vidioc_g_ext_ctrls == NULL)
1486 return -ENOTTY;
1487 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :
1488 -EINVAL;
1489}
1490
1491static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1492 struct file *file, void *fh, void *arg)
1493{
1494 struct video_device *vfd = video_devdata(file);
1495 struct v4l2_ext_controls *p = arg;
1496 struct v4l2_fh *vfh = fh;
1497
1498 p->error_idx = p->count;
1499 if (vfh && vfh->ctrl_handler)
1500 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, p);
1501 if (vfd->ctrl_handler)
1502 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, p);
1503 if (ops->vidioc_s_ext_ctrls == NULL)
1504 return -ENOTTY;
1505 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :
1506 -EINVAL;
1507}
1508
1509static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1510 struct file *file, void *fh, void *arg)
1511{
1512 struct video_device *vfd = video_devdata(file);
1513 struct v4l2_ext_controls *p = arg;
1514 struct v4l2_fh *vfh = fh;
1515
1516 p->error_idx = p->count;
1517 if (vfh && vfh->ctrl_handler)
1518 return v4l2_try_ext_ctrls(vfh->ctrl_handler, p);
1519 if (vfd->ctrl_handler)
1520 return v4l2_try_ext_ctrls(vfd->ctrl_handler, p);
1521 if (ops->vidioc_try_ext_ctrls == NULL)
1522 return -ENOTTY;
1523 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :
1524 -EINVAL;
1525}
1526
d84f2d94
HV		 1527static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
1528 struct file *file, void *fh, void *arg)
1529{
1530 struct v4l2_crop *p = arg;
1531 struct v4l2_selection s = {
1532 .type = p->type,
1533 };
1534 int ret;
1535
1536 if (ops->vidioc_g_crop)
1537 return ops->vidioc_g_crop(file, fh, p);
1538 /* simulate capture crop using selection api */
1539
1540 /* crop means compose for output devices */
1541 if (V4L2_TYPE_IS_OUTPUT(p->type))
1542 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
1543 else
1544 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
1545
1546 ret = ops->vidioc_g_selection(file, fh, &s);
1547
1548 /* copying results to old structure on success */
1549 if (!ret)
1550 p->c = s.r;
1551 return ret;
1552}
1553
1554static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
1555 struct file *file, void *fh, void *arg)
1556{
1557 struct v4l2_crop *p = arg;
1558 struct v4l2_selection s = {
1559 .type = p->type,
1560 .r = p->c,
1561 };
1562
1563 if (ops->vidioc_s_crop)
1564 return ops->vidioc_s_crop(file, fh, p);
1565 /* simulate capture crop using selection api */
1566
1567 /* crop means compose for output devices */
1568 if (V4L2_TYPE_IS_OUTPUT(p->type))
1569 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
1570 else
1571 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
1572
1573 return ops->vidioc_s_selection(file, fh, &s);
1574}
1575
1576static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
1577 struct file *file, void *fh, void *arg)
1578{
1579 struct v4l2_cropcap *p = arg;
1580 struct v4l2_selection s = { .type = p->type };
1581 int ret;
1582
1583 if (ops->vidioc_cropcap)
1584 return ops->vidioc_cropcap(file, fh, p);
1585
1586 /* obtaining bounds */
1587 if (V4L2_TYPE_IS_OUTPUT(p->type))
1588 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
1589 else
1590 s.target = V4L2_SEL_TGT_CROP_BOUNDS;
1591
1592 ret = ops->vidioc_g_selection(file, fh, &s);
1593 if (ret)
1594 return ret;
1595 p->bounds = s.r;
1596
1597 /* obtaining defrect */
1598 if (V4L2_TYPE_IS_OUTPUT(p->type))
1599 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
1600 else
1601 s.target = V4L2_SEL_TGT_CROP_DEFAULT;
1602
1603 ret = ops->vidioc_g_selection(file, fh, &s);
1604 if (ret)
1605 return ret;
1606 p->defrect = s.r;
1607
1608 /* setting trivial pixelaspect */
1609 p->pixelaspect.numerator = 1;
1610 p->pixelaspect.denominator = 1;
1611 return 0;
1612}
1613
f16f77b0
HV		 1614static int v4l_log_status(const struct v4l2_ioctl_ops *ops,
1615 struct file *file, void *fh, void *arg)
1616{
1617 struct video_device *vfd = video_devdata(file);
1618 int ret;
1619
1620 if (vfd->v4l2_dev)
1621 pr_info("%s: ================= START STATUS =================\n",
1622 vfd->v4l2_dev->name);
1623 ret = ops->vidioc_log_status(file, fh);
1624 if (vfd->v4l2_dev)
1625 pr_info("%s: ================== END STATUS ==================\n",
1626 vfd->v4l2_dev->name);
1627 return ret;
1628}
1629
1630static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
1631 struct file *file, void *fh, void *arg)
1632{
1633#ifdef CONFIG_VIDEO_ADV_DEBUG
1634 struct v4l2_dbg_register *p = arg;
1635
1636 if (!capable(CAP_SYS_ADMIN))
1637 return -EPERM;
1638 return ops->vidioc_g_register(file, fh, p);
1639#else
1640 return -ENOTTY;
1641#endif
1642}
1643
1644static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
1645 struct file *file, void *fh, void *arg)
1646{
1647#ifdef CONFIG_VIDEO_ADV_DEBUG
1648 struct v4l2_dbg_register *p = arg;
1649
1650 if (!capable(CAP_SYS_ADMIN))
1651 return -EPERM;
1652 return ops->vidioc_s_register(file, fh, p);
1653#else
1654 return -ENOTTY;
1655#endif
1656}
1657
1658static int v4l_dbg_g_chip_ident(const struct v4l2_ioctl_ops *ops,
1659 struct file *file, void *fh, void *arg)
1660{
1661 struct v4l2_dbg_chip_ident *p = arg;
1662
1663 p->ident = V4L2_IDENT_NONE;
1664 p->revision = 0;
1665 return ops->vidioc_g_chip_ident(file, fh, p);
1666}
1667
4839e6c2
HV		 1668struct v4l2_ioctl_info {
1669 unsigned int ioctl;
27cd2aba 1670 u32 flags;
4839e6c2 1671 const char * const name;
86748f35
HV		 1672 union {
1673 u32 offset;
1674 int (*func)(const struct v4l2_ioctl_ops *ops,
1675 struct file *file, void *fh, void *p);
1676 };
1677 void (*debug)(const void *arg, bool write_only);
4839e6c2
HV		 1678};
1679
1680/* This control needs a priority check */
1681#define INFO_FL_PRIO (1 << 0)
1682/* This control can be valid if the filehandle passes a control handler. */
1683#define INFO_FL_CTRL (1 << 1)
86748f35
HV		 1684/* This is a standard ioctl, no need for special code */
1685#define INFO_FL_STD (1 << 2)
1686/* This is ioctl has its own function */
1687#define INFO_FL_FUNC (1 << 3)
27cd2aba
HV		 1688/* Zero struct from after the field to the end */
1689#define INFO_FL_CLEAR(v4l2_struct, field) \
1690 ((offsetof(struct v4l2_struct, field) + \
1691 sizeof(((struct v4l2_struct *)0)->field)) << 16)
1692#define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
4839e6c2
HV		 1693
1694#define IOCTL_INFO(_ioctl, _flags) [_IOC_NR(_ioctl)] = { \
1695 .ioctl = _ioctl, \
1696 .flags = _flags, \
1697 .name = #_ioctl, \
1698}
1699
86748f35
HV		 1700#define IOCTL_INFO_STD(_ioctl, _vidioc, _debug, _flags) \
1701 [_IOC_NR(_ioctl)] = { \
1702 .ioctl = _ioctl, \
1703 .flags = _flags | INFO_FL_STD, \
1704 .name = #_ioctl, \
1705 .offset = offsetof(struct v4l2_ioctl_ops, _vidioc), \
1706 .debug = _debug, \
1707 }
1708
1709#define IOCTL_INFO_FNC(_ioctl, _func, _debug, _flags) \
1710 [_IOC_NR(_ioctl)] = { \
1711 .ioctl = _ioctl, \
1712 .flags = _flags | INFO_FL_FUNC, \
1713 .name = #_ioctl, \
1714 .func = _func, \
1715 .debug = _debug, \
1716 }
1717
4839e6c2 1718static struct v4l2_ioctl_info v4l2_ioctls[] = {
59076122 1719 IOCTL_INFO_FNC(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
be6c64e4
HV		 1720 IOCTL_INFO_FNC(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)),
1721 IOCTL_INFO_FNC(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, INFO_FL_CLEAR(v4l2_format, type)),
1722 IOCTL_INFO_FNC(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
eb3728ed
HV		 1723 IOCTL_INFO_FNC(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO),
1724 IOCTL_INFO_FNC(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_CLEAR(v4l2_buffer, length)),
be6c64e4
HV		 1725 IOCTL_INFO_STD(VIDIOC_G_FBUF, vidioc_g_fbuf, v4l_print_framebuffer, 0),
1726 IOCTL_INFO_STD(VIDIOC_S_FBUF, vidioc_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
e325b244 1727 IOCTL_INFO_STD(VIDIOC_OVERLAY, vidioc_overlay, v4l_print_u32, INFO_FL_PRIO),
eb3728ed
HV		 1728 IOCTL_INFO_FNC(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, 0),
1729 IOCTL_INFO_FNC(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, 0),
e325b244
HV		 1730 IOCTL_INFO_FNC(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO),
1731 IOCTL_INFO_FNC(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO),
eb3728ed
HV		 1732 IOCTL_INFO_FNC(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
1733 IOCTL_INFO_FNC(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
4b1e2e4d
HV		 1734 IOCTL_INFO_FNC(VIDIOC_G_STD, v4l_g_std, v4l_print_std, 0),
1735 IOCTL_INFO_FNC(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
1736 IOCTL_INFO_FNC(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
59076122 1737 IOCTL_INFO_FNC(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
efbceecd
HV		 1738 IOCTL_INFO_FNC(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
1739 IOCTL_INFO_FNC(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
4b1e2e4d
HV		 1740 IOCTL_INFO_FNC(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
1741 IOCTL_INFO_FNC(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
59076122
HV		 1742 IOCTL_INFO_STD(VIDIOC_G_AUDIO, vidioc_g_audio, v4l_print_audio, 0),
1743 IOCTL_INFO_STD(VIDIOC_S_AUDIO, vidioc_s_audio, v4l_print_audio, INFO_FL_PRIO),
efbceecd
HV		 1744 IOCTL_INFO_FNC(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
1745 IOCTL_INFO_FNC(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
59076122
HV		 1746 IOCTL_INFO_STD(VIDIOC_G_INPUT, vidioc_g_input, v4l_print_u32, 0),
1747 IOCTL_INFO_FNC(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
1748 IOCTL_INFO_STD(VIDIOC_G_OUTPUT, vidioc_g_output, v4l_print_u32, 0),
1749 IOCTL_INFO_FNC(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
1750 IOCTL_INFO_FNC(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
1751 IOCTL_INFO_STD(VIDIOC_G_AUDOUT, vidioc_g_audout, v4l_print_audioout, 0),
1752 IOCTL_INFO_STD(VIDIOC_S_AUDOUT, vidioc_s_audout, v4l_print_audioout, INFO_FL_PRIO),
4b1e2e4d
HV		 1753 IOCTL_INFO_STD(VIDIOC_G_MODULATOR, vidioc_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
1754 IOCTL_INFO_STD(VIDIOC_S_MODULATOR, vidioc_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
1755 IOCTL_INFO_FNC(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
1756 IOCTL_INFO_FNC(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
d84f2d94
HV		 1757 IOCTL_INFO_FNC(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
1758 IOCTL_INFO_FNC(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
1759 IOCTL_INFO_FNC(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
1760 IOCTL_INFO_STD(VIDIOC_G_SELECTION, vidioc_g_selection, v4l_print_selection, 0),
1761 IOCTL_INFO_STD(VIDIOC_S_SELECTION, vidioc_s_selection, v4l_print_selection, INFO_FL_PRIO),
d806f2df
HV		 1762 IOCTL_INFO_STD(VIDIOC_G_JPEGCOMP, vidioc_g_jpegcomp, v4l_print_jpegcompression, 0),
1763 IOCTL_INFO_STD(VIDIOC_S_JPEGCOMP, vidioc_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
4b1e2e4d 1764 IOCTL_INFO_FNC(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
be6c64e4 1765 IOCTL_INFO_FNC(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
59076122
HV		 1766 IOCTL_INFO_STD(VIDIOC_ENUMAUDIO, vidioc_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
1767 IOCTL_INFO_STD(VIDIOC_ENUMAUDOUT, vidioc_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
d0547cba
HV		 1768 IOCTL_INFO_FNC(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
1769 IOCTL_INFO_FNC(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
27cd2aba 1770 IOCTL_INFO(VIDIOC_G_SLICED_VBI_CAP, INFO_FL_CLEAR(v4l2_sliced_vbi_cap, type)),
f16f77b0 1771 IOCTL_INFO_FNC(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
efbceecd
HV		 1772 IOCTL_INFO_FNC(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
1773 IOCTL_INFO_FNC(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL),
1774 IOCTL_INFO_FNC(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, 0),
27cd2aba
HV		 1775 IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
1776 IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
d806f2df
HV		 1777 IOCTL_INFO_STD(VIDIOC_G_ENC_INDEX, vidioc_g_enc_index, v4l_print_enc_idx, 0),
1778 IOCTL_INFO_STD(VIDIOC_ENCODER_CMD, vidioc_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
1779 IOCTL_INFO_STD(VIDIOC_TRY_ENCODER_CMD, vidioc_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
1780 IOCTL_INFO_STD(VIDIOC_DECODER_CMD, vidioc_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
1781 IOCTL_INFO_STD(VIDIOC_TRY_DECODER_CMD, vidioc_try_decoder_cmd, v4l_print_decoder_cmd, 0),
f16f77b0
HV		 1782 IOCTL_INFO_FNC(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
1783 IOCTL_INFO_FNC(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
1784 IOCTL_INFO_FNC(VIDIOC_DBG_G_CHIP_IDENT, v4l_dbg_g_chip_ident, v4l_print_dbg_chip_ident, 0),
4b1e2e4d 1785 IOCTL_INFO_FNC(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
efc626b0
HV		 1786 IOCTL_INFO_STD(VIDIOC_ENUM_DV_PRESETS, vidioc_enum_dv_presets, v4l_print_dv_enum_presets, 0),
1787 IOCTL_INFO_STD(VIDIOC_S_DV_PRESET, vidioc_s_dv_preset, v4l_print_dv_preset, INFO_FL_PRIO),
1788 IOCTL_INFO_STD(VIDIOC_G_DV_PRESET, vidioc_g_dv_preset, v4l_print_dv_preset, 0),
1789 IOCTL_INFO_STD(VIDIOC_QUERY_DV_PRESET, vidioc_query_dv_preset, v4l_print_dv_preset, 0),
1790 IOCTL_INFO_STD(VIDIOC_S_DV_TIMINGS, vidioc_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO),
1791 IOCTL_INFO_STD(VIDIOC_G_DV_TIMINGS, vidioc_g_dv_timings, v4l_print_dv_timings, 0),
4839e6c2
HV		 1792 IOCTL_INFO(VIDIOC_DQEVENT, 0),
1793 IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, 0),
1794 IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, 0),
eb3728ed
HV		 1795 IOCTL_INFO_FNC(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO),
1796 IOCTL_INFO_FNC(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, 0),
efc626b0
HV		 1797 IOCTL_INFO_STD(VIDIOC_ENUM_DV_TIMINGS, vidioc_enum_dv_timings, v4l_print_enum_dv_timings, 0),
1798 IOCTL_INFO_STD(VIDIOC_QUERY_DV_TIMINGS, vidioc_query_dv_timings, v4l_print_dv_timings, 0),
1799 IOCTL_INFO_STD(VIDIOC_DV_TIMINGS_CAP, vidioc_dv_timings_cap, v4l_print_dv_timings_cap, 0),
4839e6c2
HV		 1800};
1801#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
1802
1803bool v4l2_is_known_ioctl(unsigned int cmd)
1804{
1805 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
1806 return false;
1807 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
1808}
1809
1810/* Common ioctl debug function. This function can be used by
1811 external ioctl messages as well as internal V4L ioctl */
1812void v4l_printk_ioctl(unsigned int cmd)
1813{
86748f35 1814 const char *dir, *type;
4839e6c2
HV		 1815
1816 switch (_IOC_TYPE(cmd)) {
1817 case 'd':
1818 type = "v4l2_int";
1819 break;
1820 case 'V':
1821 if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
1822 type = "v4l2";
1823 break;
1824 }
86748f35 1825 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
4839e6c2
HV		 1826 return;
1827 default:
1828 type = "unknown";
86748f35 1829 break;
4839e6c2
HV		 1830 }
1831
1832 switch (_IOC_DIR(cmd)) {
1833 case _IOC_NONE: dir = "--"; break;
1834 case _IOC_READ: dir = "r-"; break;
1835 case _IOC_WRITE: dir = "-w"; break;
1836 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
1837 default: dir = "*ERR*"; break;
1838 }
86748f35 1839 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
4839e6c2
HV		 1840 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
1841}
1842EXPORT_SYMBOL(v4l_printk_ioctl);
1843
069b7479 1844static long __video_do_ioctl(struct file *file,
35ea11ff
HV		 1845 unsigned int cmd, void *arg)
1846{
1847 struct video_device *vfd = video_devdata(file);
a399810c 1848 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
86748f35
HV		 1849 bool write_only = false;
1850 struct v4l2_ioctl_info default_info;
1851 const struct v4l2_ioctl_info *info;
d5fbf32f 1852 void *fh = file->private_data;
99cd47bc 1853 struct v4l2_fh *vfh = NULL;
b1a873a3 1854 int use_fh_prio = 0;
9190d191 1855 long ret = -ENOTTY;
35ea11ff 1856
6a717883
HV		 1857 if (ops == NULL) {
1858 printk(KERN_WARNING "videodev: \"%s\" has no ioctl_ops.\n",
1859 vfd->name);
9190d191 1860 return ret;
6a717883
HV		 1861 }
1862
b1a873a3 1863 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) {
99cd47bc 1864 vfh = file->private_data;
b1a873a3
HV		 1865 use_fh_prio = test_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
1866 }
99cd47bc 1867
48ea0be0 1868 if (v4l2_is_known_ioctl(cmd)) {
86748f35 1869 info = &v4l2_ioctls[_IOC_NR(cmd)];
48ea0be0
HV		 1870
1871 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) &&
1872 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
86748f35 1873 goto done;
4b902fec
HV		 1874
1875 if (use_fh_prio && (info->flags & INFO_FL_PRIO)) {
1876 ret = v4l2_prio_check(vfd->prio, vfh->prio);
1877 if (ret)
86748f35 1878 goto done;
4b902fec 1879 }
86748f35
HV		 1880 } else {
1881 default_info.ioctl = cmd;
1882 default_info.flags = 0;
1883 default_info.debug = NULL;
1884 info = &default_info;
48ea0be0
HV		 1885 }
1886
86748f35
HV		 1887 write_only = _IOC_DIR(cmd) == _IOC_WRITE;
1888 if (info->debug && write_only && vfd->debug > V4L2_DEBUG_IOCTL) {
48ea0be0 1889 v4l_print_ioctl(vfd->name, cmd);
86748f35
HV		 1890 pr_cont(": ");
1891 info->debug(arg, write_only);
1892 }
1893 if (info->flags & INFO_FL_STD) {
1894 typedef int (*vidioc_op)(struct file *file, void *fh, void *p);
1895 const void *p = vfd->ioctl_ops;
1896 const vidioc_op *vidioc = p + info->offset;
1897
1898 ret = (*vidioc)(file, fh, arg);
1899 goto done;
1900 } else if (info->flags & INFO_FL_FUNC) {
1901 ret = info->func(ops, file, fh, arg);
1902 goto done;
48ea0be0 1903 }
99cd47bc 1904
6a717883 1905 switch (cmd) {
35ea11ff
HV		 1906 case VIDIOC_G_SLICED_VBI_CAP:
1907 {
1908 struct v4l2_sliced_vbi_cap *p = arg;
35ea11ff 1909
19c96e4b
TP		 1910 /* Clear up to type, everything after type is zerod already */
1911 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
1912
35ea11ff 1913 dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
a399810c 1914 ret = ops->vidioc_g_sliced_vbi_cap(file, fh, p);
35ea11ff
HV		 1915 if (!ret)
1916 dbgarg2("service_set=%d\n", p->service_set);
1917 break;
1918 }
74d83fa0
MCC		 1919 case VIDIOC_ENUM_FRAMESIZES:
1920 {
1921 struct v4l2_frmsizeenum *p = arg;
1922
74d83fa0
MCC		 1923 ret = ops->vidioc_enum_framesizes(file, fh, p);
1924 dbgarg(cmd,
d1afe425
MCC		 1925 "index=%d, pixelformat=%c%c%c%c, type=%d ",
1926 p->index,
1927 (p->pixel_format & 0xff),
1928 (p->pixel_format >> 8) & 0xff,
1929 (p->pixel_format >> 16) & 0xff,
1930 (p->pixel_format >> 24) & 0xff,
1931 p->type);
74d83fa0
MCC		 1932 switch (p->type) {
1933 case V4L2_FRMSIZE_TYPE_DISCRETE:
d33fbcbb 1934 dbgarg3("width = %d, height=%d\n",
74d83fa0
MCC		 1935 p->discrete.width, p->discrete.height);
1936 break;
1937 case V4L2_FRMSIZE_TYPE_STEPWISE:
d33fbcbb 1938 dbgarg3("min %dx%d, max %dx%d, step %dx%d\n",
74d83fa0
MCC		 1939 p->stepwise.min_width, p->stepwise.min_height,
1940 p->stepwise.step_width, p->stepwise.step_height,
1941 p->stepwise.max_width, p->stepwise.max_height);
1942 break;
1943 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
d33fbcbb 1944 dbgarg3("continuous\n");
74d83fa0
MCC		 1945 break;
1946 default:
d33fbcbb 1947 dbgarg3("- Unknown type!\n");
74d83fa0
MCC		 1948 }
1949
1950 break;
1951 }
1952 case VIDIOC_ENUM_FRAMEINTERVALS:
1953 {
1954 struct v4l2_frmivalenum *p = arg;
1955
74d83fa0
MCC		 1956 ret = ops->vidioc_enum_frameintervals(file, fh, p);
1957 dbgarg(cmd,
1958 "index=%d, pixelformat=%d, width=%d, height=%d, type=%d ",
1959 p->index, p->pixel_format,
1960 p->width, p->height, p->type);
1961 switch (p->type) {
1962 case V4L2_FRMIVAL_TYPE_DISCRETE:
1963 dbgarg2("fps=%d/%d\n",
1964 p->discrete.numerator,
1965 p->discrete.denominator);
1966 break;
1967 case V4L2_FRMIVAL_TYPE_STEPWISE:
1958578d
MCC		 1968 dbgarg2("min=%d/%d, max=%d/%d, step=%d/%d\n",
1969 p->stepwise.min.numerator,
1970 p->stepwise.min.denominator,
1971 p->stepwise.max.numerator,
1972 p->stepwise.max.denominator,
1973 p->stepwise.step.numerator,
1974 p->stepwise.step.denominator);
74d83fa0
MCC		 1975 break;
1976 case V4L2_FRMIVAL_TYPE_CONTINUOUS:
1977 dbgarg2("continuous\n");
1978 break;
1979 default:
1980 dbgarg2("- Unknown type!\n");
1981 }
1982 break;
1983 }
d3d7c963
SA		 1984 case VIDIOC_DQEVENT:
1985 {
1986 struct v4l2_event *ev = arg;
1987
d3d7c963
SA		 1988 ret = v4l2_event_dequeue(fh, ev, file->f_flags & O_NONBLOCK);
1989 if (ret < 0) {
1990 dbgarg(cmd, "no pending events?");
1991 break;
1992 }
1993 dbgarg(cmd,
1994 "pending=%d, type=0x%8.8x, sequence=%d, "
1995 "timestamp=%lu.%9.9lu ",
1996 ev->pending, ev->type, ev->sequence,
1997 ev->timestamp.tv_sec, ev->timestamp.tv_nsec);
1998 break;
1999 }
2000 case VIDIOC_SUBSCRIBE_EVENT:
2001 {
2002 struct v4l2_event_subscription *sub = arg;
2003
d3d7c963
SA		 2004 ret = ops->vidioc_subscribe_event(fh, sub);
2005 if (ret < 0) {
2006 dbgarg(cmd, "failed, ret=%ld", ret);
2007 break;
2008 }
2009 dbgarg(cmd, "type=0x%8.8x", sub->type);
2010 break;
2011 }
2012 case VIDIOC_UNSUBSCRIBE_EVENT:
2013 {
2014 struct v4l2_event_subscription *sub = arg;
2015
d3d7c963
SA		 2016 ret = ops->vidioc_unsubscribe_event(fh, sub);
2017 if (ret < 0) {
2018 dbgarg(cmd, "failed, ret=%ld", ret);
2019 break;
2020 }
2021 dbgarg(cmd, "type=0x%8.8x", sub->type);
2022 break;
2023 }
a399810c 2024 default:
a399810c
HV		 2025 if (!ops->vidioc_default)
2026 break;
4b902fec
HV		 2027 ret = ops->vidioc_default(file, fh, use_fh_prio ?
2028 v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
2029 cmd, arg);
35ea11ff 2030 break;
35ea11ff
HV		 2031 } /* switch */
2032
86748f35
HV		 2033done:
2034 if (vfd->debug) {
2035 if (write_only && vfd->debug > V4L2_DEBUG_IOCTL) {
2036 if (ret < 0)
2037 printk(KERN_DEBUG "%s: error %ld\n",
2038 video_device_node_name(vfd), ret);
2039 return ret;
2040 }
2041 v4l_print_ioctl(vfd->name, cmd);
2042 if (ret < 0)
2043 pr_cont(": error %ld\n", ret);
2044 else if (vfd->debug == V4L2_DEBUG_IOCTL)
2045 pr_cont("\n");
2046 else if (!info->debug)
2047 return ret;
2048 else if (_IOC_DIR(cmd) == _IOC_NONE)
2049 info->debug(arg, write_only);
2050 else {
2051 pr_cont(": ");
2052 info->debug(arg, write_only);
35ea11ff
HV		 2053 }
2054 }
2055
2056 return ret;
2057}
2058
d14e6d76
PO		 2059static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
2060 void * __user *user_ptr, void ***kernel_ptr)
2061{
2062 int ret = 0;
2063
2064 switch (cmd) {
2065 case VIDIOC_QUERYBUF:
2066 case VIDIOC_QBUF:
2067 case VIDIOC_DQBUF: {
2068 struct v4l2_buffer *buf = parg;
2069
2070 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
2071 if (buf->length > VIDEO_MAX_PLANES) {
2072 ret = -EINVAL;
2073 break;
2074 }
2075 *user_ptr = (void __user *)buf->m.planes;
2ef40370 2076 *kernel_ptr = (void *)&buf->m.planes;
d14e6d76
PO		 2077 *array_size = sizeof(struct v4l2_plane) * buf->length;
2078 ret = 1;
2079 }
2080 break;
2081 }
2082
2083 case VIDIOC_S_EXT_CTRLS:
2084 case VIDIOC_G_EXT_CTRLS:
2085 case VIDIOC_TRY_EXT_CTRLS: {
2086 struct v4l2_ext_controls *ctrls = parg;
2087
2088 if (ctrls->count != 0) {
6c06108b
DC		 2089 if (ctrls->count > V4L2_CID_MAX_CTRLS) {
2090 ret = -EINVAL;
2091 break;
2092 }
d14e6d76 2093 *user_ptr = (void __user *)ctrls->controls;
2ef40370 2094 *kernel_ptr = (void *)&ctrls->controls;
d14e6d76
PO		 2095 *array_size = sizeof(struct v4l2_ext_control)
2096 * ctrls->count;
2097 ret = 1;
2098 }
2099 break;
2100 }
2101 }
2102
2103 return ret;
2104}
2105
fc0a8079
LP		 2106long
2107video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
2108 v4l2_kioctl func)
35ea11ff
HV		 2109{
2110 char sbuf[128];
2111 void *mbuf = NULL;
1d94aa36 2112 void *parg = (void *)arg;
069b7479 2113 long err = -EINVAL;
d14e6d76
PO		 2114 bool has_array_args;
2115 size_t array_size = 0;
35ea11ff 2116 void __user *user_ptr = NULL;
d14e6d76 2117 void **kernel_ptr = NULL;
35ea11ff 2118
35ea11ff 2119 /* Copy arguments into temp kernel buffer */
337f9d20 2120 if (_IOC_DIR(cmd) != _IOC_NONE) {
35ea11ff
HV		 2121 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
2122 parg = sbuf;
2123 } else {
2124 /* too big to allocate from stack */
2125 mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
2126 if (NULL == mbuf)
2127 return -ENOMEM;
2128 parg = mbuf;
2129 }
2130
2131 err = -EFAULT;
19c96e4b 2132 if (_IOC_DIR(cmd) & _IOC_WRITE) {
27cd2aba
HV		 2133 unsigned int n = _IOC_SIZE(cmd);
2134
2135 /*
2136 * In some cases, only a few fields are used as input,
2137 * i.e. when the app sets "index" and then the driver
2138 * fills in the rest of the structure for the thing
2139 * with that index. We only need to copy up the first
2140 * non-input field.
2141 */
2142 if (v4l2_is_known_ioctl(cmd)) {
2143 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags;
2144 if (flags & INFO_FL_CLEAR_MASK)
2145 n = (flags & INFO_FL_CLEAR_MASK) >> 16;
2146 }
19c96e4b
TP		 2147
2148 if (copy_from_user(parg, (void __user *)arg, n))
35ea11ff 2149 goto out;
19c96e4b
TP		 2150
2151 /* zero out anything we don't copy from userspace */
2152 if (n < _IOC_SIZE(cmd))
2153 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n);
337f9d20
TP		 2154 } else {
2155 /* read-only ioctl */
2156 memset(parg, 0, _IOC_SIZE(cmd));
19c96e4b 2157 }
35ea11ff
HV		 2158 }
2159
d14e6d76
PO		 2160 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
2161 if (err < 0)
2162 goto out;
2163 has_array_args = err;
35ea11ff 2164
d14e6d76
PO		 2165 if (has_array_args) {
2166 /*
2167 * When adding new types of array args, make sure that the
2168 * parent argument to ioctl (which contains the pointer to the
2169 * array) fits into sbuf (so that mbuf will still remain
2170 * unused up to here).
2171 */
2172 mbuf = kmalloc(array_size, GFP_KERNEL);
2173 err = -ENOMEM;
2174 if (NULL == mbuf)
2175 goto out_array_args;
2176 err = -EFAULT;
2177 if (copy_from_user(mbuf, user_ptr, array_size))
2178 goto out_array_args;
2179 *kernel_ptr = mbuf;
35ea11ff
HV		 2180 }
2181
2182 /* Handles IOCTL */
fc0a8079 2183 err = func(file, cmd, parg);
35ea11ff 2184 if (err == -ENOIOCTLCMD)
02bbb814 2185 err = -ENOTTY;
35ea11ff 2186
d14e6d76
PO		 2187 if (has_array_args) {
2188 *kernel_ptr = user_ptr;
2189 if (copy_to_user(user_ptr, mbuf, array_size))
35ea11ff 2190 err = -EFAULT;
d14e6d76 2191 goto out_array_args;
35ea11ff 2192 }
5d7758ee
HV		 2193 /* VIDIOC_QUERY_DV_TIMINGS can return an error, but still have valid
2194 results that must be returned. */
2195 if (err < 0 && cmd != VIDIOC_QUERY_DV_TIMINGS)
35ea11ff
HV		 2196 goto out;
2197
d14e6d76 2198out_array_args:
35ea11ff
HV		 2199 /* Copy results into user buffer */
2200 switch (_IOC_DIR(cmd)) {
2201 case _IOC_READ:
2202 case (_IOC_WRITE | _IOC_READ):
2203 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
2204 err = -EFAULT;
2205 break;
2206 }
2207
2208out:
2209 kfree(mbuf);
2210 return err;
2211}
fc0a8079
LP		 2212EXPORT_SYMBOL(video_usercopy);
2213
2214long video_ioctl2(struct file *file,
2215 unsigned int cmd, unsigned long arg)
2216{
2217 return video_usercopy(file, cmd, arg, __video_do_ioctl);
2218}
8a522c91 2219EXPORT_SYMBOL(video_ioctl2);
Linux kernel - Deliverables
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