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[mirror_ubuntu-bionic-kernel.git] / drivers / media / v4l2-core / 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>
5a5adf6b 30#include <media/videobuf2-core.h>
35ea11ff 31
25985edc 32/* Zero out the end of the struct pointed to by p. Everything after, but
7ecc0cf9
TP		 33 * not including, the specified field is cleared. */
34#define CLEAR_AFTER_FIELD(p, field) \
35 memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \
36 0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field))
37
35ea11ff
HV		 38struct std_descr {
39 v4l2_std_id std;
40 const char *descr;
41};
42
43static const struct std_descr standards[] = {
44 { V4L2_STD_NTSC, "NTSC" },
45 { V4L2_STD_NTSC_M, "NTSC-M" },
46 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" },
47 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" },
48 { V4L2_STD_NTSC_443, "NTSC-443" },
49 { V4L2_STD_PAL, "PAL" },
50 { V4L2_STD_PAL_BG, "PAL-BG" },
51 { V4L2_STD_PAL_B, "PAL-B" },
52 { V4L2_STD_PAL_B1, "PAL-B1" },
53 { V4L2_STD_PAL_G, "PAL-G" },
54 { V4L2_STD_PAL_H, "PAL-H" },
55 { V4L2_STD_PAL_I, "PAL-I" },
56 { V4L2_STD_PAL_DK, "PAL-DK" },
57 { V4L2_STD_PAL_D, "PAL-D" },
58 { V4L2_STD_PAL_D1, "PAL-D1" },
59 { V4L2_STD_PAL_K, "PAL-K" },
60 { V4L2_STD_PAL_M, "PAL-M" },
61 { V4L2_STD_PAL_N, "PAL-N" },
62 { V4L2_STD_PAL_Nc, "PAL-Nc" },
63 { V4L2_STD_PAL_60, "PAL-60" },
64 { V4L2_STD_SECAM, "SECAM" },
65 { V4L2_STD_SECAM_B, "SECAM-B" },
66 { V4L2_STD_SECAM_G, "SECAM-G" },
67 { V4L2_STD_SECAM_H, "SECAM-H" },
68 { V4L2_STD_SECAM_DK, "SECAM-DK" },
69 { V4L2_STD_SECAM_D, "SECAM-D" },
70 { V4L2_STD_SECAM_K, "SECAM-K" },
71 { V4L2_STD_SECAM_K1, "SECAM-K1" },
72 { V4L2_STD_SECAM_L, "SECAM-L" },
73 { V4L2_STD_SECAM_LC, "SECAM-Lc" },
74 { 0, "Unknown" }
75};
76
77/* video4linux standard ID conversion to standard name
78 */
79const char *v4l2_norm_to_name(v4l2_std_id id)
80{
81 u32 myid = id;
82 int i;
83
84 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
85 64 bit comparations. So, on that architecture, with some gcc
86 variants, compilation fails. Currently, the max value is 30bit wide.
87 */
88 BUG_ON(myid != id);
89
90 for (i = 0; standards[i].std; i++)
91 if (myid == standards[i].std)
92 break;
93 return standards[i].descr;
94}
95EXPORT_SYMBOL(v4l2_norm_to_name);
96
51f0b8d5
TP		 97/* Returns frame period for the given standard */
98void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod)
99{
100 if (id & V4L2_STD_525_60) {
101 frameperiod->numerator = 1001;
102 frameperiod->denominator = 30000;
103 } else {
104 frameperiod->numerator = 1;
105 frameperiod->denominator = 25;
106 }
107}
108EXPORT_SYMBOL(v4l2_video_std_frame_period);
109
35ea11ff
HV		 110/* Fill in the fields of a v4l2_standard structure according to the
111 'id' and 'transmission' parameters. Returns negative on error. */
112int v4l2_video_std_construct(struct v4l2_standard *vs,
113 int id, const char *name)
114{
51f0b8d5
TP		 115 vs->id = id;
116 v4l2_video_std_frame_period(id, &vs->frameperiod);
117 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625;
35ea11ff
HV		 118 strlcpy(vs->name, name, sizeof(vs->name));
119 return 0;
120}
121EXPORT_SYMBOL(v4l2_video_std_construct);
122
123/* ----------------------------------------------------------------- */
124/* some arrays for pretty-printing debug messages of enum types */
125
126const char *v4l2_field_names[] = {
127 [V4L2_FIELD_ANY] = "any",
128 [V4L2_FIELD_NONE] = "none",
129 [V4L2_FIELD_TOP] = "top",
130 [V4L2_FIELD_BOTTOM] = "bottom",
131 [V4L2_FIELD_INTERLACED] = "interlaced",
132 [V4L2_FIELD_SEQ_TB] = "seq-tb",
133 [V4L2_FIELD_SEQ_BT] = "seq-bt",
134 [V4L2_FIELD_ALTERNATE] = "alternate",
135 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",
136 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",
137};
138EXPORT_SYMBOL(v4l2_field_names);
139
140const char *v4l2_type_names[] = {
141 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap",
142 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay",
143 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out",
144 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap",
145 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out",
146 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",
147 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out",
148 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay",
f8f3914c
PO		 149 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane",
150 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane",
35ea11ff
HV		 151};
152EXPORT_SYMBOL(v4l2_type_names);
153
154static const char *v4l2_memory_names[] = {
155 [V4L2_MEMORY_MMAP] = "mmap",
156 [V4L2_MEMORY_USERPTR] = "userptr",
157 [V4L2_MEMORY_OVERLAY] = "overlay",
158};
159
160#define prt_names(a, arr) ((((a) >= 0) && ((a) < ARRAY_SIZE(arr))) ? \
161 arr[a] : "unknown")
162
163/* ------------------------------------------------------------------ */
164/* debug help functions */
8ab75e3e 165
59076122
HV		 166static void v4l_print_querycap(const void *arg, bool write_only)
167{
168 const struct v4l2_capability *p = arg;
169
170 pr_cont("driver=%s, card=%s, bus=%s, version=0x%08x, "
171 "capabilities=0x%08x, device_caps=0x%08x\n",
172 p->driver, p->card, p->bus_info,
173 p->version, p->capabilities, p->device_caps);
174}
175
176static void v4l_print_enuminput(const void *arg, bool write_only)
177{
178 const struct v4l2_input *p = arg;
179
180 pr_cont("index=%u, name=%s, type=%u, audioset=0x%x, tuner=%u, "
181 "std=0x%08Lx, status=0x%x, capabilities=0x%x\n",
182 p->index, p->name, p->type, p->audioset, p->tuner,
183 (unsigned long long)p->std, p->status, p->capabilities);
184}
185
186static void v4l_print_enumoutput(const void *arg, bool write_only)
187{
188 const struct v4l2_output *p = arg;
189
190 pr_cont("index=%u, name=%s, type=%u, audioset=0x%x, "
191 "modulator=%u, std=0x%08Lx, capabilities=0x%x\n",
192 p->index, p->name, p->type, p->audioset, p->modulator,
193 (unsigned long long)p->std, p->capabilities);
194}
195
196static void v4l_print_audio(const void *arg, bool write_only)
197{
198 const struct v4l2_audio *p = arg;
199
200 if (write_only)
201 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode);
202 else
203 pr_cont("index=%u, name=%s, capability=0x%x, mode=0x%x\n",
204 p->index, p->name, p->capability, p->mode);
205}
206
207static void v4l_print_audioout(const void *arg, bool write_only)
208{
209 const struct v4l2_audioout *p = arg;
210
211 if (write_only)
212 pr_cont("index=%u\n", p->index);
213 else
214 pr_cont("index=%u, name=%s, capability=0x%x, mode=0x%x\n",
215 p->index, p->name, p->capability, p->mode);
216}
217
be6c64e4
HV		 218static void v4l_print_fmtdesc(const void *arg, bool write_only)
219{
220 const struct v4l2_fmtdesc *p = arg;
221
222 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%c%c%c%c, description='%s'\n",
223 p->index, prt_names(p->type, v4l2_type_names),
224 p->flags, (p->pixelformat & 0xff),
225 (p->pixelformat >> 8) & 0xff,
226 (p->pixelformat >> 16) & 0xff,
227 (p->pixelformat >> 24) & 0xff,
228 p->description);
229}
230
231static void v4l_print_format(const void *arg, bool write_only)
232{
233 const struct v4l2_format *p = arg;
234 const struct v4l2_pix_format *pix;
235 const struct v4l2_pix_format_mplane *mp;
236 const struct v4l2_vbi_format *vbi;
237 const struct v4l2_sliced_vbi_format *sliced;
238 const struct v4l2_window *win;
239 const struct v4l2_clip *clip;
240 unsigned i;
241
242 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
243 switch (p->type) {
244 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
245 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
246 pix = &p->fmt.pix;
247 pr_cont(", width=%u, height=%u, "
248 "pixelformat=%c%c%c%c, field=%s, "
249 "bytesperline=%u sizeimage=%u, colorspace=%d\n",
250 pix->width, pix->height,
251 (pix->pixelformat & 0xff),
252 (pix->pixelformat >> 8) & 0xff,
253 (pix->pixelformat >> 16) & 0xff,
254 (pix->pixelformat >> 24) & 0xff,
255 prt_names(pix->field, v4l2_field_names),
256 pix->bytesperline, pix->sizeimage,
257 pix->colorspace);
258 break;
259 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
260 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
261 mp = &p->fmt.pix_mp;
262 pr_cont(", width=%u, height=%u, "
263 "format=%c%c%c%c, field=%s, "
264 "colorspace=%d, num_planes=%u\n",
265 mp->width, mp->height,
266 (mp->pixelformat & 0xff),
267 (mp->pixelformat >> 8) & 0xff,
268 (mp->pixelformat >> 16) & 0xff,
269 (mp->pixelformat >> 24) & 0xff,
270 prt_names(mp->field, v4l2_field_names),
271 mp->colorspace, mp->num_planes);
272 for (i = 0; i < mp->num_planes; i++)
273 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i,
274 mp->plane_fmt[i].bytesperline,
275 mp->plane_fmt[i].sizeimage);
276 break;
277 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
278 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
279 win = &p->fmt.win;
280 pr_cont(", wxh=%dx%d, x,y=%d,%d, field=%s, "
281 "chromakey=0x%08x, bitmap=%p, "
282 "global_alpha=0x%02x\n",
283 win->w.width, win->w.height,
284 win->w.left, win->w.top,
285 prt_names(win->field, v4l2_field_names),
286 win->chromakey, win->bitmap, win->global_alpha);
287 clip = win->clips;
288 for (i = 0; i < win->clipcount; i++) {
289 printk(KERN_DEBUG "clip %u: wxh=%dx%d, x,y=%d,%d\n",
290 i, clip->c.width, clip->c.height,
291 clip->c.left, clip->c.top);
292 clip = clip->next;
293 }
294 break;
295 case V4L2_BUF_TYPE_VBI_CAPTURE:
296 case V4L2_BUF_TYPE_VBI_OUTPUT:
297 vbi = &p->fmt.vbi;
298 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, "
299 "sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n",
300 vbi->sampling_rate, vbi->offset,
301 vbi->samples_per_line,
302 (vbi->sample_format & 0xff),
303 (vbi->sample_format >> 8) & 0xff,
304 (vbi->sample_format >> 16) & 0xff,
305 (vbi->sample_format >> 24) & 0xff,
306 vbi->start[0], vbi->start[1],
307 vbi->count[0], vbi->count[1]);
308 break;
309 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
310 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
311 sliced = &p->fmt.sliced;
312 pr_cont(", service_set=0x%08x, io_size=%d\n",
313 sliced->service_set, sliced->io_size);
314 for (i = 0; i < 24; i++)
315 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
316 sliced->service_lines[0][i],
317 sliced->service_lines[1][i]);
318 break;
be6c64e4
HV		 319 }
320}
321
322static void v4l_print_framebuffer(const void *arg, bool write_only)
323{
324 const struct v4l2_framebuffer *p = arg;
325
326 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, "
327 "height=%u, pixelformat=%c%c%c%c, "
328 "bytesperline=%u sizeimage=%u, colorspace=%d\n",
329 p->capability, p->flags, p->base,
330 p->fmt.width, p->fmt.height,
331 (p->fmt.pixelformat & 0xff),
332 (p->fmt.pixelformat >> 8) & 0xff,
333 (p->fmt.pixelformat >> 16) & 0xff,
334 (p->fmt.pixelformat >> 24) & 0xff,
335 p->fmt.bytesperline, p->fmt.sizeimage,
336 p->fmt.colorspace);
337}
338
e325b244
HV		 339static void v4l_print_buftype(const void *arg, bool write_only)
340{
341 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names));
342}
343
4b1e2e4d
HV		 344static void v4l_print_modulator(const void *arg, bool write_only)
345{
346 const struct v4l2_modulator *p = arg;
347
348 if (write_only)
349 pr_cont("index=%u, txsubchans=0x%x", p->index, p->txsubchans);
350 else
351 pr_cont("index=%u, name=%s, capability=0x%x, "
352 "rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
353 p->index, p->name, p->capability,
354 p->rangelow, p->rangehigh, p->txsubchans);
355}
356
357static void v4l_print_tuner(const void *arg, bool write_only)
358{
359 const struct v4l2_tuner *p = arg;
360
361 if (write_only)
362 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode);
363 else
364 pr_cont("index=%u, name=%s, type=%u, capability=0x%x, "
365 "rangelow=%u, rangehigh=%u, signal=%u, afc=%d, "
366 "rxsubchans=0x%x, audmode=%u\n",
367 p->index, p->name, p->type,
368 p->capability, p->rangelow,
369 p->rangehigh, p->signal, p->afc,
370 p->rxsubchans, p->audmode);
371}
372
373static void v4l_print_frequency(const void *arg, bool write_only)
374{
375 const struct v4l2_frequency *p = arg;
376
377 pr_cont("tuner=%u, type=%u, frequency=%u\n",
378 p->tuner, p->type, p->frequency);
379}
380
381static void v4l_print_standard(const void *arg, bool write_only)
382{
383 const struct v4l2_standard *p = arg;
384
385 pr_cont("index=%u, id=0x%Lx, name=%s, fps=%u/%u, "
386 "framelines=%u\n", p->index,
387 (unsigned long long)p->id, p->name,
388 p->frameperiod.numerator,
389 p->frameperiod.denominator,
390 p->framelines);
391}
392
393static void v4l_print_std(const void *arg, bool write_only)
394{
395 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg);
396}
397
398static void v4l_print_hw_freq_seek(const void *arg, bool write_only)
399{
400 const struct v4l2_hw_freq_seek *p = arg;
401
5e788317
HV		 402 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, "
403 "rangelow=%u, rangehigh=%u\n",
404 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing,
405 p->rangelow, p->rangehigh);
4b1e2e4d
HV		 406}
407
eb3728ed 408static void v4l_print_requestbuffers(const void *arg, bool write_only)
59076122 409{
eb3728ed
HV		 410 const struct v4l2_requestbuffers *p = arg;
411
412 pr_cont("count=%d, type=%s, memory=%s\n",
413 p->count,
414 prt_names(p->type, v4l2_type_names),
415 prt_names(p->memory, v4l2_memory_names));
59076122
HV		 416}
417
eb3728ed 418static void v4l_print_buffer(const void *arg, bool write_only)
35ea11ff 419{
eb3728ed
HV		 420 const struct v4l2_buffer *p = arg;
421 const struct v4l2_timecode *tc = &p->timecode;
422 const struct v4l2_plane *plane;
d14e6d76 423 int i;
35ea11ff 424
eb3728ed
HV		 425 pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, "
426 "flags=0x%08x, field=%s, sequence=%d, memory=%s",
35ea11ff
HV		 427 p->timestamp.tv_sec / 3600,
428 (int)(p->timestamp.tv_sec / 60) % 60,
429 (int)(p->timestamp.tv_sec % 60),
b045979d 430 (long)p->timestamp.tv_usec,
35ea11ff
HV		 431 p->index,
432 prt_names(p->type, v4l2_type_names),
eb3728ed
HV		 433 p->flags, prt_names(p->field, v4l2_field_names),
434 p->sequence, prt_names(p->memory, v4l2_memory_names));
d14e6d76
PO		 435
436 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
eb3728ed 437 pr_cont("\n");
d14e6d76
PO		 438 for (i = 0; i < p->length; ++i) {
439 plane = &p->m.planes[i];
eb3728ed
HV		 440 printk(KERN_DEBUG
441 "plane %d: bytesused=%d, data_offset=0x%08x "
442 "offset/userptr=0x%lx, length=%d\n",
d14e6d76
PO		 443 i, plane->bytesused, plane->data_offset,
444 plane->m.userptr, plane->length);
445 }
446 } else {
eb3728ed 447 pr_cont("bytesused=%d, offset/userptr=0x%lx, length=%d\n",
d14e6d76
PO		 448 p->bytesused, p->m.userptr, p->length);
449 }
450
eb3728ed
HV		 451 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, "
452 "flags=0x%08x, frames=%d, userbits=0x%08x\n",
35ea11ff
HV		 453 tc->hours, tc->minutes, tc->seconds,
454 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
455}
456
eb3728ed
HV		 457static void v4l_print_create_buffers(const void *arg, bool write_only)
458{
459 const struct v4l2_create_buffers *p = arg;
460
461 pr_cont("index=%d, count=%d, memory=%s, ",
462 p->index, p->count,
463 prt_names(p->memory, v4l2_memory_names));
464 v4l_print_format(&p->format, write_only);
465}
466
467static void v4l_print_streamparm(const void *arg, bool write_only)
468{
469 const struct v4l2_streamparm *p = arg;
470
471 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
472
473 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
474 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
475 const struct v4l2_captureparm *c = &p->parm.capture;
476
477 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, "
478 "extendedmode=%d, readbuffers=%d\n",
479 c->capability, c->capturemode,
480 c->timeperframe.numerator, c->timeperframe.denominator,
481 c->extendedmode, c->readbuffers);
482 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
483 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
484 const struct v4l2_outputparm *c = &p->parm.output;
485
486 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, "
487 "extendedmode=%d, writebuffers=%d\n",
488 c->capability, c->outputmode,
489 c->timeperframe.numerator, c->timeperframe.denominator,
490 c->extendedmode, c->writebuffers);
491 }
492}
493
efbceecd
HV		 494static void v4l_print_queryctrl(const void *arg, bool write_only)
495{
496 const struct v4l2_queryctrl *p = arg;
497
498 pr_cont("id=0x%x, type=%d, name=%s, min/max=%d/%d, "
499 "step=%d, default=%d, flags=0x%08x\n",
500 p->id, p->type, p->name,
501 p->minimum, p->maximum,
502 p->step, p->default_value, p->flags);
503}
504
505static void v4l_print_querymenu(const void *arg, bool write_only)
506{
507 const struct v4l2_querymenu *p = arg;
508
509 pr_cont("id=0x%x, index=%d\n", p->id, p->index);
510}
511
512static void v4l_print_control(const void *arg, bool write_only)
513{
514 const struct v4l2_control *p = arg;
515
516 pr_cont("id=0x%x, value=%d\n", p->id, p->value);
517}
518
519static void v4l_print_ext_controls(const void *arg, bool write_only)
520{
521 const struct v4l2_ext_controls *p = arg;
522 int i;
523
524 pr_cont("class=0x%x, count=%d, error_idx=%d",
525 p->ctrl_class, p->count, p->error_idx);
526 for (i = 0; i < p->count; i++) {
527 if (p->controls[i].size)
528 pr_cont(", id/val=0x%x/0x%x",
529 p->controls[i].id, p->controls[i].value);
530 else
531 pr_cont(", id/size=0x%x/%u",
532 p->controls[i].id, p->controls[i].size);
533 }
534 pr_cont("\n");
535}
536
d84f2d94 537static void v4l_print_cropcap(const void *arg, bool write_only)
eb3728ed 538{
d84f2d94
HV		 539 const struct v4l2_cropcap *p = arg;
540
541 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, "
542 "defrect wxh=%dx%d, x,y=%d,%d\n, "
543 "pixelaspect %d/%d\n",
544 prt_names(p->type, v4l2_type_names),
545 p->bounds.width, p->bounds.height,
546 p->bounds.left, p->bounds.top,
547 p->defrect.width, p->defrect.height,
548 p->defrect.left, p->defrect.top,
549 p->pixelaspect.numerator, p->pixelaspect.denominator);
eb3728ed
HV		 550}
551
d84f2d94 552static void v4l_print_crop(const void *arg, bool write_only)
35ea11ff 553{
d84f2d94
HV		 554 const struct v4l2_crop *p = arg;
555
556 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n",
557 prt_names(p->type, v4l2_type_names),
558 p->c.width, p->c.height,
559 p->c.left, p->c.top);
560}
561
562static void v4l_print_selection(const void *arg, bool write_only)
563{
564 const struct v4l2_selection *p = arg;
565
566 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n",
567 prt_names(p->type, v4l2_type_names),
568 p->target, p->flags,
569 p->r.width, p->r.height, p->r.left, p->r.top);
570}
571
d806f2df
HV		 572static void v4l_print_jpegcompression(const void *arg, bool write_only)
573{
574 const struct v4l2_jpegcompression *p = arg;
575
576 pr_cont("quality=%d, APPn=%d, APP_len=%d, "
577 "COM_len=%d, jpeg_markers=0x%x\n",
578 p->quality, p->APPn, p->APP_len,
579 p->COM_len, p->jpeg_markers);
580}
581
582static void v4l_print_enc_idx(const void *arg, bool write_only)
583{
584 const struct v4l2_enc_idx *p = arg;
585
586 pr_cont("entries=%d, entries_cap=%d\n",
587 p->entries, p->entries_cap);
588}
589
590static void v4l_print_encoder_cmd(const void *arg, bool write_only)
591{
592 const struct v4l2_encoder_cmd *p = arg;
593
594 pr_cont("cmd=%d, flags=0x%x\n",
595 p->cmd, p->flags);
596}
597
598static void v4l_print_decoder_cmd(const void *arg, bool write_only)
599{
600 const struct v4l2_decoder_cmd *p = arg;
601
602 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags);
603
604 if (p->cmd == V4L2_DEC_CMD_START)
605 pr_info("speed=%d, format=%u\n",
606 p->start.speed, p->start.format);
607 else if (p->cmd == V4L2_DEC_CMD_STOP)
608 pr_info("pts=%llu\n", p->stop.pts);
609}
610
f16f77b0
HV		 611static void v4l_print_dbg_chip_ident(const void *arg, bool write_only)
612{
613 const struct v4l2_dbg_chip_ident *p = arg;
614
615 pr_cont("type=%u, ", p->match.type);
616 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
617 pr_cont("name=%s, ", p->match.name);
618 else
619 pr_cont("addr=%u, ", p->match.addr);
620 pr_cont("chip_ident=%u, revision=0x%x\n",
621 p->ident, p->revision);
622}
623
624static void v4l_print_dbg_register(const void *arg, bool write_only)
625{
626 const struct v4l2_dbg_register *p = arg;
627
628 pr_cont("type=%u, ", p->match.type);
629 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
630 pr_cont("name=%s, ", p->match.name);
631 else
632 pr_cont("addr=%u, ", p->match.addr);
633 pr_cont("reg=0x%llx, val=0x%llx\n",
634 p->reg, p->val);
635}
636
efc626b0 637static void v4l_print_dv_enum_presets(const void *arg, bool write_only)
d84f2d94 638{
efc626b0
HV		 639 const struct v4l2_dv_enum_preset *p = arg;
640
641 pr_cont("index=%u, preset=%u, name=%s, width=%u, height=%u\n",
642 p->index, p->preset, p->name, p->width, p->height);
d84f2d94 643}
35ea11ff 644
efc626b0 645static void v4l_print_dv_preset(const void *arg, bool write_only)
f16f77b0 646{
efc626b0
HV		 647 const struct v4l2_dv_preset *p = arg;
648
649 pr_cont("preset=%u\n", p->preset);
f16f77b0
HV		 650}
651
efc626b0 652static void v4l_print_dv_timings(const void *arg, bool write_only)
5d7758ee 653{
efc626b0
HV		 654 const struct v4l2_dv_timings *p = arg;
655
5d7758ee
HV		 656 switch (p->type) {
657 case V4L2_DV_BT_656_1120:
efc626b0
HV		 658 pr_cont("type=bt-656/1120, interlaced=%u, "
659 "pixelclock=%llu, "
660 "width=%u, height=%u, polarities=0x%x, "
661 "hfrontporch=%u, hsync=%u, "
662 "hbackporch=%u, vfrontporch=%u, "
663 "vsync=%u, vbackporch=%u, "
664 "il_vfrontporch=%u, il_vsync=%u, "
665 "il_vbackporch=%u, standards=0x%x, flags=0x%x\n",
5d7758ee
HV		 666 p->bt.interlaced, p->bt.pixelclock,
667 p->bt.width, p->bt.height,
668 p->bt.polarities, p->bt.hfrontporch,
669 p->bt.hsync, p->bt.hbackporch,
670 p->bt.vfrontporch, p->bt.vsync,
671 p->bt.vbackporch, p->bt.il_vfrontporch,
672 p->bt.il_vsync, p->bt.il_vbackporch,
673 p->bt.standards, p->bt.flags);
674 break;
675 default:
efc626b0 676 pr_cont("type=%d\n", p->type);
5d7758ee
HV		 677 break;
678 }
679}
680
efc626b0
HV		 681static void v4l_print_enum_dv_timings(const void *arg, bool write_only)
682{
683 const struct v4l2_enum_dv_timings *p = arg;
684
685 pr_cont("index=%u, ", p->index);
686 v4l_print_dv_timings(&p->timings, write_only);
687}
688
689static void v4l_print_dv_timings_cap(const void *arg, bool write_only)
690{
691 const struct v4l2_dv_timings_cap *p = arg;
692
693 switch (p->type) {
694 case V4L2_DV_BT_656_1120:
695 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, "
696 "pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
697 p->bt.min_width, p->bt.max_width,
698 p->bt.min_height, p->bt.max_height,
699 p->bt.min_pixelclock, p->bt.max_pixelclock,
700 p->bt.standards, p->bt.capabilities);
701 break;
702 default:
703 pr_cont("type=%u\n", p->type);
704 break;
705 }
706}
707
458aa4a6
HV		 708static void v4l_print_frmsizeenum(const void *arg, bool write_only)
709{
710 const struct v4l2_frmsizeenum *p = arg;
711
712 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u",
713 p->index,
714 (p->pixel_format & 0xff),
715 (p->pixel_format >> 8) & 0xff,
716 (p->pixel_format >> 16) & 0xff,
717 (p->pixel_format >> 24) & 0xff,
718 p->type);
719 switch (p->type) {
720 case V4L2_FRMSIZE_TYPE_DISCRETE:
721 pr_cont(" wxh=%ux%u\n",
722 p->discrete.width, p->discrete.height);
723 break;
724 case V4L2_FRMSIZE_TYPE_STEPWISE:
725 pr_cont(" min=%ux%u, max=%ux%u, step=%ux%u\n",
726 p->stepwise.min_width, p->stepwise.min_height,
727 p->stepwise.step_width, p->stepwise.step_height,
728 p->stepwise.max_width, p->stepwise.max_height);
729 break;
730 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
731 /* fall through */
732 default:
733 pr_cont("\n");
734 break;
735 }
736}
737
738static void v4l_print_frmivalenum(const void *arg, bool write_only)
739{
740 const struct v4l2_frmivalenum *p = arg;
741
742 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u",
743 p->index,
744 (p->pixel_format & 0xff),
745 (p->pixel_format >> 8) & 0xff,
746 (p->pixel_format >> 16) & 0xff,
747 (p->pixel_format >> 24) & 0xff,
748 p->width, p->height, p->type);
749 switch (p->type) {
750 case V4L2_FRMIVAL_TYPE_DISCRETE:
751 pr_cont(" fps=%d/%d\n",
752 p->discrete.numerator,
753 p->discrete.denominator);
754 break;
755 case V4L2_FRMIVAL_TYPE_STEPWISE:
756 pr_cont(" min=%d/%d, max=%d/%d, step=%d/%d\n",
757 p->stepwise.min.numerator,
758 p->stepwise.min.denominator,
759 p->stepwise.max.numerator,
760 p->stepwise.max.denominator,
761 p->stepwise.step.numerator,
762 p->stepwise.step.denominator);
763 break;
764 case V4L2_FRMIVAL_TYPE_CONTINUOUS:
765 /* fall through */
766 default:
767 pr_cont("\n");
768 break;
769 }
770}
771
772static void v4l_print_event(const void *arg, bool write_only)
773{
774 const struct v4l2_event *p = arg;
775 const struct v4l2_event_ctrl *c;
776
777 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, "
778 "timestamp=%lu.%9.9lu\n",
779 p->type, p->pending, p->sequence, p->id,
780 p->timestamp.tv_sec, p->timestamp.tv_nsec);
781 switch (p->type) {
782 case V4L2_EVENT_VSYNC:
783 printk(KERN_DEBUG "field=%s\n",
784 prt_names(p->u.vsync.field, v4l2_field_names));
785 break;
786 case V4L2_EVENT_CTRL:
787 c = &p->u.ctrl;
788 printk(KERN_DEBUG "changes=0x%x, type=%u, ",
789 c->changes, c->type);
790 if (c->type == V4L2_CTRL_TYPE_INTEGER64)
791 pr_cont("value64=%lld, ", c->value64);
792 else
793 pr_cont("value=%d, ", c->value);
794 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d,"
795 " default_value=%d\n",
796 c->flags, c->minimum, c->maximum,
797 c->step, c->default_value);
798 break;
799 case V4L2_EVENT_FRAME_SYNC:
800 pr_cont("frame_sequence=%u\n",
801 p->u.frame_sync.frame_sequence);
802 break;
803 }
804}
805
806static void v4l_print_event_subscription(const void *arg, bool write_only)
807{
808 const struct v4l2_event_subscription *p = arg;
809
810 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
811 p->type, p->id, p->flags);
812}
813
814static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only)
815{
816 const struct v4l2_sliced_vbi_cap *p = arg;
817 int i;
818
819 pr_cont("type=%s, service_set=0x%08x\n",
820 prt_names(p->type, v4l2_type_names), p->service_set);
821 for (i = 0; i < 24; i++)
822 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
823 p->service_lines[0][i],
824 p->service_lines[1][i]);
825}
826
82b655bf
HV		 827static void v4l_print_freq_band(const void *arg, bool write_only)
828{
829 const struct v4l2_frequency_band *p = arg;
830
831 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, "
832 "rangelow=%u, rangehigh=%u, modulation=0x%x\n",
833 p->tuner, p->type, p->index,
834 p->capability, p->rangelow,
835 p->rangehigh, p->modulation);
836}
837
efc626b0
HV		 838static void v4l_print_u32(const void *arg, bool write_only)
839{
840 pr_cont("value=%u\n", *(const u32 *)arg);
841}
842
843static void v4l_print_newline(const void *arg, bool write_only)
844{
845 pr_cont("\n");
846}
847
f18d8e07
HV		 848static void v4l_print_default(const void *arg, bool write_only)
849{
850 pr_cont("driver-specific ioctl\n");
851}
852
efbceecd 853static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
35ea11ff
HV		 854{
855 __u32 i;
856
857 /* zero the reserved fields */
858 c->reserved[0] = c->reserved[1] = 0;
6b5a9492 859 for (i = 0; i < c->count; i++)
35ea11ff 860 c->controls[i].reserved2[0] = 0;
6b5a9492 861
35ea11ff
HV		 862 /* V4L2_CID_PRIVATE_BASE cannot be used as control class
863 when using extended controls.
864 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
865 is it allowed for backwards compatibility.
866 */
867 if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE)
868 return 0;
869 /* Check that all controls are from the same control class. */
870 for (i = 0; i < c->count; i++) {
871 if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) {
872 c->error_idx = i;
873 return 0;
874 }
875 }
876 return 1;
877}
878
a399810c 879static int check_fmt(const struct v4l2_ioctl_ops *ops, enum v4l2_buf_type type)
35ea11ff 880{
a399810c
HV		 881 if (ops == NULL)
882 return -EINVAL;
883
35ea11ff
HV		 884 switch (type) {
885 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
d14e6d76
PO		 886 if (ops->vidioc_g_fmt_vid_cap ||
887 ops->vidioc_g_fmt_vid_cap_mplane)
888 return 0;
889 break;
890 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
891 if (ops->vidioc_g_fmt_vid_cap_mplane)
35ea11ff
HV		 892 return 0;
893 break;
894 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1175d613 895 if (ops->vidioc_g_fmt_vid_overlay)
35ea11ff
HV		 896 return 0;
897 break;
898 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
d14e6d76
PO		 899 if (ops->vidioc_g_fmt_vid_out ||
900 ops->vidioc_g_fmt_vid_out_mplane)
901 return 0;
902 break;
903 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
904 if (ops->vidioc_g_fmt_vid_out_mplane)
35ea11ff
HV		 905 return 0;
906 break;
907 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1175d613 908 if (ops->vidioc_g_fmt_vid_out_overlay)
35ea11ff
HV		 909 return 0;
910 break;
911 case V4L2_BUF_TYPE_VBI_CAPTURE:
1175d613 912 if (ops->vidioc_g_fmt_vbi_cap)
35ea11ff
HV		 913 return 0;
914 break;
915 case V4L2_BUF_TYPE_VBI_OUTPUT:
1175d613 916 if (ops->vidioc_g_fmt_vbi_out)
35ea11ff
HV		 917 return 0;
918 break;
919 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1175d613 920 if (ops->vidioc_g_fmt_sliced_vbi_cap)
35ea11ff
HV		 921 return 0;
922 break;
923 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1175d613 924 if (ops->vidioc_g_fmt_sliced_vbi_out)
35ea11ff
HV		 925 return 0;
926 break;
633c98e5 927 default:
35ea11ff
HV		 928 break;
929 }
930 return -EINVAL;
931}
932
59076122
HV		 933static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
934 struct file *file, void *fh, void *arg)
935{
936 struct v4l2_capability *cap = (struct v4l2_capability *)arg;
937
938 cap->version = LINUX_VERSION_CODE;
939 return ops->vidioc_querycap(file, fh, cap);
940}
941
942static int v4l_s_input(const struct v4l2_ioctl_ops *ops,
943 struct file *file, void *fh, void *arg)
944{
945 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg);
946}
947
948static int v4l_s_output(const struct v4l2_ioctl_ops *ops,
949 struct file *file, void *fh, void *arg)
950{
951 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg);
952}
953
d0547cba
HV		 954static int v4l_g_priority(const struct v4l2_ioctl_ops *ops,
955 struct file *file, void *fh, void *arg)
956{
957 struct video_device *vfd;
958 u32 *p = arg;
959
960 if (ops->vidioc_g_priority)
961 return ops->vidioc_g_priority(file, fh, arg);
962 vfd = video_devdata(file);
963 *p = v4l2_prio_max(&vfd->v4l2_dev->prio);
964 return 0;
965}
966
967static int v4l_s_priority(const struct v4l2_ioctl_ops *ops,
968 struct file *file, void *fh, void *arg)
969{
970 struct video_device *vfd;
971 struct v4l2_fh *vfh;
972 u32 *p = arg;
973
974 if (ops->vidioc_s_priority)
975 return ops->vidioc_s_priority(file, fh, *p);
976 vfd = video_devdata(file);
977 vfh = file->private_data;
978 return v4l2_prio_change(&vfd->v4l2_dev->prio, &vfh->prio, *p);
979}
980
59076122
HV		 981static int v4l_enuminput(const struct v4l2_ioctl_ops *ops,
982 struct file *file, void *fh, void *arg)
983{
984 struct v4l2_input *p = arg;
985
986 /*
987 * We set the flags for CAP_PRESETS, CAP_CUSTOM_TIMINGS &
988 * CAP_STD here based on ioctl handler provided by the
989 * driver. If the driver doesn't support these
990 * for a specific input, it must override these flags.
991 */
992 if (ops->vidioc_s_std)
993 p->capabilities |= V4L2_IN_CAP_STD;
994 if (ops->vidioc_s_dv_preset)
995 p->capabilities |= V4L2_IN_CAP_PRESETS;
996 if (ops->vidioc_s_dv_timings)
997 p->capabilities |= V4L2_IN_CAP_CUSTOM_TIMINGS;
998
999 return ops->vidioc_enum_input(file, fh, p);
1000}
1001
1002static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops,
1003 struct file *file, void *fh, void *arg)
1004{
1005 struct v4l2_output *p = arg;
1006
1007 /*
1008 * We set the flags for CAP_PRESETS, CAP_CUSTOM_TIMINGS &
1009 * CAP_STD here based on ioctl handler provided by the
1010 * driver. If the driver doesn't support these
1011 * for a specific output, it must override these flags.
1012 */
1013 if (ops->vidioc_s_std)
1014 p->capabilities |= V4L2_OUT_CAP_STD;
1015 if (ops->vidioc_s_dv_preset)
1016 p->capabilities |= V4L2_OUT_CAP_PRESETS;
1017 if (ops->vidioc_s_dv_timings)
1018 p->capabilities |= V4L2_OUT_CAP_CUSTOM_TIMINGS;
1019
1020 return ops->vidioc_enum_output(file, fh, p);
1021}
1022
be6c64e4
HV		 1023static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
1024 struct file *file, void *fh, void *arg)
1025{
1026 struct v4l2_fmtdesc *p = arg;
1027
1028 switch (p->type) {
1029 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1030 if (unlikely(!ops->vidioc_enum_fmt_vid_cap))
1031 break;
1032 return ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
1033 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1034 if (unlikely(!ops->vidioc_enum_fmt_vid_cap_mplane))
1035 break;
1036 return ops->vidioc_enum_fmt_vid_cap_mplane(file, fh, arg);
1037 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1038 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay))
1039 break;
1040 return ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
1041 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1042 if (unlikely(!ops->vidioc_enum_fmt_vid_out))
1043 break;
1044 return ops->vidioc_enum_fmt_vid_out(file, fh, arg);
1045 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1046 if (unlikely(!ops->vidioc_enum_fmt_vid_out_mplane))
1047 break;
1048 return ops->vidioc_enum_fmt_vid_out_mplane(file, fh, arg);
be6c64e4
HV		 1049 }
1050 return -EINVAL;
1051}
1052
1053static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
1054 struct file *file, void *fh, void *arg)
1055{
1056 struct v4l2_format *p = arg;
1057
1058 switch (p->type) {
1059 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1060 if (unlikely(!ops->vidioc_g_fmt_vid_cap))
1061 break;
1062 return ops->vidioc_g_fmt_vid_cap(file, fh, arg);
1063 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1064 if (unlikely(!ops->vidioc_g_fmt_vid_cap_mplane))
1065 break;
1066 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
1067 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1068 if (unlikely(!ops->vidioc_g_fmt_vid_overlay))
1069 break;
1070 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
1071 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1072 if (unlikely(!ops->vidioc_g_fmt_vid_out))
1073 break;
1074 return ops->vidioc_g_fmt_vid_out(file, fh, arg);
1075 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1076 if (unlikely(!ops->vidioc_g_fmt_vid_out_mplane))
1077 break;
1078 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
1079 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1080 if (unlikely(!ops->vidioc_g_fmt_vid_out_overlay))
1081 break;
1082 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
1083 case V4L2_BUF_TYPE_VBI_CAPTURE:
1084 if (unlikely(!ops->vidioc_g_fmt_vbi_cap))
1085 break;
1086 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
1087 case V4L2_BUF_TYPE_VBI_OUTPUT:
1088 if (unlikely(!ops->vidioc_g_fmt_vbi_out))
1089 break;
1090 return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
1091 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1092 if (unlikely(!ops->vidioc_g_fmt_sliced_vbi_cap))
1093 break;
1094 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
1095 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1096 if (unlikely(!ops->vidioc_g_fmt_sliced_vbi_out))
1097 break;
1098 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
be6c64e4
HV		 1099 }
1100 return -EINVAL;
1101}
1102
1103static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
1104 struct file *file, void *fh, void *arg)
1105{
1106 struct v4l2_format *p = arg;
1107
1108 switch (p->type) {
1109 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1110 if (unlikely(!ops->vidioc_s_fmt_vid_cap))
1111 break;
1112 CLEAR_AFTER_FIELD(p, fmt.pix);
1113 return ops->vidioc_s_fmt_vid_cap(file, fh, arg);
1114 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1115 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane))
1116 break;
1117 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1118 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
1119 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1120 if (unlikely(!ops->vidioc_s_fmt_vid_overlay))
1121 break;
1122 CLEAR_AFTER_FIELD(p, fmt.win);
1123 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
1124 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1125 if (unlikely(!ops->vidioc_s_fmt_vid_out))
1126 break;
1127 CLEAR_AFTER_FIELD(p, fmt.pix);
1128 return ops->vidioc_s_fmt_vid_out(file, fh, arg);
1129 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1130 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane))
1131 break;
1132 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1133 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
1134 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1135 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay))
1136 break;
1137 CLEAR_AFTER_FIELD(p, fmt.win);
1138 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
1139 case V4L2_BUF_TYPE_VBI_CAPTURE:
1140 if (unlikely(!ops->vidioc_s_fmt_vbi_cap))
1141 break;
1142 CLEAR_AFTER_FIELD(p, fmt.vbi);
1143 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
1144 case V4L2_BUF_TYPE_VBI_OUTPUT:
1145 if (unlikely(!ops->vidioc_s_fmt_vbi_out))
1146 break;
1147 CLEAR_AFTER_FIELD(p, fmt.vbi);
1148 return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
1149 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1150 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap))
1151 break;
1152 CLEAR_AFTER_FIELD(p, fmt.sliced);
1153 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
1154 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1155 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out))
1156 break;
1157 CLEAR_AFTER_FIELD(p, fmt.sliced);
1158 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
be6c64e4
HV		 1159 }
1160 return -EINVAL;
1161}
1162
1163static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
1164 struct file *file, void *fh, void *arg)
1165{
1166 struct v4l2_format *p = arg;
1167
1168 switch (p->type) {
1169 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1170 if (unlikely(!ops->vidioc_try_fmt_vid_cap))
1171 break;
1172 CLEAR_AFTER_FIELD(p, fmt.pix);
1173 return ops->vidioc_try_fmt_vid_cap(file, fh, arg);
1174 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1175 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane))
1176 break;
1177 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1178 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
1179 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1180 if (unlikely(!ops->vidioc_try_fmt_vid_overlay))
1181 break;
1182 CLEAR_AFTER_FIELD(p, fmt.win);
1183 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
1184 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1185 if (unlikely(!ops->vidioc_try_fmt_vid_out))
1186 break;
1187 CLEAR_AFTER_FIELD(p, fmt.pix);
1188 return ops->vidioc_try_fmt_vid_out(file, fh, arg);
1189 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1190 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane))
1191 break;
1192 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1193 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
1194 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1195 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay))
1196 break;
1197 CLEAR_AFTER_FIELD(p, fmt.win);
1198 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
1199 case V4L2_BUF_TYPE_VBI_CAPTURE:
1200 if (unlikely(!ops->vidioc_try_fmt_vbi_cap))
1201 break;
1202 CLEAR_AFTER_FIELD(p, fmt.vbi);
1203 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
1204 case V4L2_BUF_TYPE_VBI_OUTPUT:
1205 if (unlikely(!ops->vidioc_try_fmt_vbi_out))
1206 break;
1207 CLEAR_AFTER_FIELD(p, fmt.vbi);
1208 return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
1209 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1210 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap))
1211 break;
1212 CLEAR_AFTER_FIELD(p, fmt.sliced);
1213 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
1214 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1215 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out))
1216 break;
1217 CLEAR_AFTER_FIELD(p, fmt.sliced);
1218 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
be6c64e4
HV		 1219 }
1220 return -EINVAL;
1221}
1222
e325b244
HV		 1223static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
1224 struct file *file, void *fh, void *arg)
1225{
1226 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
1227}
1228
1229static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
1230 struct file *file, void *fh, void *arg)
1231{
1232 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
1233}
1234
4b1e2e4d
HV		 1235static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,
1236 struct file *file, void *fh, void *arg)
1237{
1238 struct video_device *vfd = video_devdata(file);
1239 struct v4l2_tuner *p = arg;
82b655bf 1240 int err;
4b1e2e4d
HV		 1241
1242 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1243 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
82b655bf
HV		 1244 err = ops->vidioc_g_tuner(file, fh, p);
1245 if (!err)
1246 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1247 return err;
4b1e2e4d
HV		 1248}
1249
1250static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
1251 struct file *file, void *fh, void *arg)
1252{
1253 struct video_device *vfd = video_devdata(file);
1254 struct v4l2_tuner *p = arg;
1255
1256 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1257 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1258 return ops->vidioc_s_tuner(file, fh, p);
1259}
1260
82b655bf
HV		 1261static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,
1262 struct file *file, void *fh, void *arg)
1263{
1264 struct v4l2_modulator *p = arg;
1265 int err;
1266
1267 err = ops->vidioc_g_modulator(file, fh, p);
1268 if (!err)
1269 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1270 return err;
1271}
1272
4b1e2e4d
HV		 1273static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
1274 struct file *file, void *fh, void *arg)
1275{
1276 struct video_device *vfd = video_devdata(file);
1277 struct v4l2_frequency *p = arg;
1278
1279 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1280 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1281 return ops->vidioc_g_frequency(file, fh, p);
1282}
1283
1284static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
1285 struct file *file, void *fh, void *arg)
1286{
1287 struct video_device *vfd = video_devdata(file);
1288 struct v4l2_frequency *p = arg;
1289 enum v4l2_tuner_type type;
1290
1291 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1292 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1293 if (p->type != type)
1294 return -EINVAL;
1295 return ops->vidioc_s_frequency(file, fh, p);
1296}
1297
1298static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
1299 struct file *file, void *fh, void *arg)
1300{
1301 struct video_device *vfd = video_devdata(file);
1302 struct v4l2_standard *p = arg;
1303 v4l2_std_id id = vfd->tvnorms, curr_id = 0;
1304 unsigned int index = p->index, i, j = 0;
1305 const char *descr = "";
1306
1307 /* Return norm array in a canonical way */
1308 for (i = 0; i <= index && id; i++) {
1309 /* last std value in the standards array is 0, so this
1310 while always ends there since (id & 0) == 0. */
1311 while ((id & standards[j].std) != standards[j].std)
1312 j++;
1313 curr_id = standards[j].std;
1314 descr = standards[j].descr;
1315 j++;
1316 if (curr_id == 0)
1317 break;
1318 if (curr_id != V4L2_STD_PAL &&
1319 curr_id != V4L2_STD_SECAM &&
1320 curr_id != V4L2_STD_NTSC)
1321 id &= ~curr_id;
1322 }
1323 if (i <= index)
1324 return -EINVAL;
1325
1326 v4l2_video_std_construct(p, curr_id, descr);
1327 return 0;
1328}
1329
1330static int v4l_g_std(const struct v4l2_ioctl_ops *ops,
1331 struct file *file, void *fh, void *arg)
1332{
1333 struct video_device *vfd = video_devdata(file);
1334 v4l2_std_id *id = arg;
1335
1336 /* Calls the specific handler */
1337 if (ops->vidioc_g_std)
1338 return ops->vidioc_g_std(file, fh, arg);
1339 if (vfd->current_norm) {
1340 *id = vfd->current_norm;
1341 return 0;
1342 }
1343 return -ENOTTY;
1344}
1345
1346static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
1347 struct file *file, void *fh, void *arg)
1348{
1349 struct video_device *vfd = video_devdata(file);
1350 v4l2_std_id *id = arg, norm;
1351 int ret;
1352
1353 norm = (*id) & vfd->tvnorms;
1354 if (vfd->tvnorms && !norm) /* Check if std is supported */
1355 return -EINVAL;
1356
1357 /* Calls the specific handler */
1358 ret = ops->vidioc_s_std(file, fh, &norm);
1359
1360 /* Updates standard information */
1361 if (ret >= 0)
1362 vfd->current_norm = norm;
1363 return ret;
1364}
1365
1366static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
1367 struct file *file, void *fh, void *arg)
1368{
1369 struct video_device *vfd = video_devdata(file);
1370 v4l2_std_id *p = arg;
1371
1372 /*
1373 * If nothing detected, it should return all supported
1374 * standard.
1375 * Drivers just need to mask the std argument, in order
1376 * to remove the standards that don't apply from the mask.
1377 * This means that tuners, audio and video decoders can join
1378 * their efforts to improve the standards detection.
1379 */
1380 *p = vfd->tvnorms;
1381 return ops->vidioc_querystd(file, fh, arg);
1382}
1383
1384static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
1385 struct file *file, void *fh, void *arg)
1386{
1387 struct video_device *vfd = video_devdata(file);
1388 struct v4l2_hw_freq_seek *p = arg;
1389 enum v4l2_tuner_type type;
1390
1391 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1392 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1393 if (p->type != type)
1394 return -EINVAL;
1395 return ops->vidioc_s_hw_freq_seek(file, fh, p);
1396}
1397
eb3728ed
HV		 1398static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,
1399 struct file *file, void *fh, void *arg)
1400{
1401 struct v4l2_requestbuffers *p = arg;
1402 int ret = check_fmt(ops, p->type);
1403
1404 if (ret)
1405 return ret;
1406
633c98e5 1407 CLEAR_AFTER_FIELD(p, memory);
eb3728ed
HV		 1408
1409 return ops->vidioc_reqbufs(file, fh, p);
1410}
1411
1412static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,
1413 struct file *file, void *fh, void *arg)
1414{
1415 struct v4l2_buffer *p = arg;
1416 int ret = check_fmt(ops, p->type);
1417
1418 return ret ? ret : ops->vidioc_querybuf(file, fh, p);
1419}
1420
1421static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,
1422 struct file *file, void *fh, void *arg)
1423{
1424 struct v4l2_buffer *p = arg;
1425 int ret = check_fmt(ops, p->type);
1426
1427 return ret ? ret : ops->vidioc_qbuf(file, fh, p);
1428}
1429
1430static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,
1431 struct file *file, void *fh, void *arg)
1432{
1433 struct v4l2_buffer *p = arg;
1434 int ret = check_fmt(ops, p->type);
1435
1436 return ret ? ret : ops->vidioc_dqbuf(file, fh, p);
1437}
1438
1439static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
1440 struct file *file, void *fh, void *arg)
1441{
1442 struct v4l2_create_buffers *create = arg;
1443 int ret = check_fmt(ops, create->format.type);
1444
1445 return ret ? ret : ops->vidioc_create_bufs(file, fh, create);
1446}
1447
1448static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
1449 struct file *file, void *fh, void *arg)
1450{
1451 struct v4l2_buffer *b = arg;
1452 int ret = check_fmt(ops, b->type);
1453
1454 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
1455}
1456
1457static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
1458 struct file *file, void *fh, void *arg)
1459{
1460 struct video_device *vfd = video_devdata(file);
1461 struct v4l2_streamparm *p = arg;
1462 v4l2_std_id std;
1463 int ret = check_fmt(ops, p->type);
1464
1465 if (ret)
1466 return ret;
1467 if (ops->vidioc_g_parm)
1468 return ops->vidioc_g_parm(file, fh, p);
1469 std = vfd->current_norm;
1470 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1471 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1472 return -EINVAL;
1473 p->parm.capture.readbuffers = 2;
1474 if (ops->vidioc_g_std)
1475 ret = ops->vidioc_g_std(file, fh, &std);
1476 if (ret == 0)
1477 v4l2_video_std_frame_period(std,
1478 &p->parm.capture.timeperframe);
1479 return ret;
1480}
1481
1482static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
1483 struct file *file, void *fh, void *arg)
1484{
1485 struct v4l2_streamparm *p = arg;
1486 int ret = check_fmt(ops, p->type);
1487
1488 return ret ? ret : ops->vidioc_s_parm(file, fh, p);
1489}
1490
efbceecd
HV		 1491static int v4l_queryctrl(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_queryctrl *p = arg;
7a3ed2d9
HV		 1496 struct v4l2_fh *vfh =
1497 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1498
1499 if (vfh && vfh->ctrl_handler)
1500 return v4l2_queryctrl(vfh->ctrl_handler, p);
1501 if (vfd->ctrl_handler)
1502 return v4l2_queryctrl(vfd->ctrl_handler, p);
1503 if (ops->vidioc_queryctrl)
1504 return ops->vidioc_queryctrl(file, fh, p);
1505 return -ENOTTY;
1506}
1507
1508static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,
1509 struct file *file, void *fh, void *arg)
1510{
1511 struct video_device *vfd = video_devdata(file);
1512 struct v4l2_querymenu *p = arg;
7a3ed2d9
HV		 1513 struct v4l2_fh *vfh =
1514 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1515
1516 if (vfh && vfh->ctrl_handler)
1517 return v4l2_querymenu(vfh->ctrl_handler, p);
1518 if (vfd->ctrl_handler)
1519 return v4l2_querymenu(vfd->ctrl_handler, p);
1520 if (ops->vidioc_querymenu)
1521 return ops->vidioc_querymenu(file, fh, p);
1522 return -ENOTTY;
1523}
1524
1525static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops,
1526 struct file *file, void *fh, void *arg)
1527{
1528 struct video_device *vfd = video_devdata(file);
1529 struct v4l2_control *p = arg;
7a3ed2d9
HV		 1530 struct v4l2_fh *vfh =
1531 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1532 struct v4l2_ext_controls ctrls;
1533 struct v4l2_ext_control ctrl;
1534
1535 if (vfh && vfh->ctrl_handler)
1536 return v4l2_g_ctrl(vfh->ctrl_handler, p);
1537 if (vfd->ctrl_handler)
1538 return v4l2_g_ctrl(vfd->ctrl_handler, p);
1539 if (ops->vidioc_g_ctrl)
1540 return ops->vidioc_g_ctrl(file, fh, p);
1541 if (ops->vidioc_g_ext_ctrls == NULL)
1542 return -ENOTTY;
1543
1544 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1545 ctrls.count = 1;
1546 ctrls.controls = &ctrl;
1547 ctrl.id = p->id;
1548 ctrl.value = p->value;
1549 if (check_ext_ctrls(&ctrls, 1)) {
1550 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
1551
1552 if (ret == 0)
1553 p->value = ctrl.value;
1554 return ret;
1555 }
1556 return -EINVAL;
1557}
1558
1559static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,
1560 struct file *file, void *fh, void *arg)
1561{
1562 struct video_device *vfd = video_devdata(file);
1563 struct v4l2_control *p = arg;
7a3ed2d9
HV		 1564 struct v4l2_fh *vfh =
1565 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1566 struct v4l2_ext_controls ctrls;
1567 struct v4l2_ext_control ctrl;
1568
1569 if (vfh && vfh->ctrl_handler)
1570 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
1571 if (vfd->ctrl_handler)
1572 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
1573 if (ops->vidioc_s_ctrl)
1574 return ops->vidioc_s_ctrl(file, fh, p);
1575 if (ops->vidioc_s_ext_ctrls == NULL)
1576 return -ENOTTY;
1577
1578 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1579 ctrls.count = 1;
1580 ctrls.controls = &ctrl;
1581 ctrl.id = p->id;
1582 ctrl.value = p->value;
1583 if (check_ext_ctrls(&ctrls, 1))
1584 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
1585 return -EINVAL;
1586}
1587
1588static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1589 struct file *file, void *fh, void *arg)
1590{
1591 struct video_device *vfd = video_devdata(file);
1592 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 1593 struct v4l2_fh *vfh =
1594 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1595
1596 p->error_idx = p->count;
1597 if (vfh && vfh->ctrl_handler)
1598 return v4l2_g_ext_ctrls(vfh->ctrl_handler, p);
1599 if (vfd->ctrl_handler)
1600 return v4l2_g_ext_ctrls(vfd->ctrl_handler, p);
1601 if (ops->vidioc_g_ext_ctrls == NULL)
1602 return -ENOTTY;
1603 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :
1604 -EINVAL;
1605}
1606
1607static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1608 struct file *file, void *fh, void *arg)
1609{
1610 struct video_device *vfd = video_devdata(file);
1611 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 1612 struct v4l2_fh *vfh =
1613 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1614
1615 p->error_idx = p->count;
1616 if (vfh && vfh->ctrl_handler)
1617 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, p);
1618 if (vfd->ctrl_handler)
1619 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, p);
1620 if (ops->vidioc_s_ext_ctrls == NULL)
1621 return -ENOTTY;
1622 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :
1623 -EINVAL;
1624}
1625
1626static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1627 struct file *file, void *fh, void *arg)
1628{
1629 struct video_device *vfd = video_devdata(file);
1630 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 1631 struct v4l2_fh *vfh =
1632 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1633
1634 p->error_idx = p->count;
1635 if (vfh && vfh->ctrl_handler)
1636 return v4l2_try_ext_ctrls(vfh->ctrl_handler, p);
1637 if (vfd->ctrl_handler)
1638 return v4l2_try_ext_ctrls(vfd->ctrl_handler, p);
1639 if (ops->vidioc_try_ext_ctrls == NULL)
1640 return -ENOTTY;
1641 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :
1642 -EINVAL;
1643}
1644
d84f2d94
HV		 1645static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
1646 struct file *file, void *fh, void *arg)
1647{
1648 struct v4l2_crop *p = arg;
1649 struct v4l2_selection s = {
1650 .type = p->type,
1651 };
1652 int ret;
1653
1654 if (ops->vidioc_g_crop)
1655 return ops->vidioc_g_crop(file, fh, p);
1656 /* simulate capture crop using selection api */
1657
1658 /* crop means compose for output devices */
1659 if (V4L2_TYPE_IS_OUTPUT(p->type))
1660 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
1661 else
1662 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
1663
1664 ret = ops->vidioc_g_selection(file, fh, &s);
1665
1666 /* copying results to old structure on success */
1667 if (!ret)
1668 p->c = s.r;
1669 return ret;
1670}
1671
1672static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
1673 struct file *file, void *fh, void *arg)
1674{
1675 struct v4l2_crop *p = arg;
1676 struct v4l2_selection s = {
1677 .type = p->type,
1678 .r = p->c,
1679 };
1680
1681 if (ops->vidioc_s_crop)
1682 return ops->vidioc_s_crop(file, fh, p);
1683 /* simulate capture crop using selection api */
1684
1685 /* crop means compose for output devices */
1686 if (V4L2_TYPE_IS_OUTPUT(p->type))
1687 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
1688 else
1689 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
1690
1691 return ops->vidioc_s_selection(file, fh, &s);
1692}
1693
1694static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
1695 struct file *file, void *fh, void *arg)
1696{
1697 struct v4l2_cropcap *p = arg;
1698 struct v4l2_selection s = { .type = p->type };
1699 int ret;
1700
1701 if (ops->vidioc_cropcap)
1702 return ops->vidioc_cropcap(file, fh, p);
1703
1704 /* obtaining bounds */
1705 if (V4L2_TYPE_IS_OUTPUT(p->type))
1706 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
1707 else
1708 s.target = V4L2_SEL_TGT_CROP_BOUNDS;
1709
1710 ret = ops->vidioc_g_selection(file, fh, &s);
1711 if (ret)
1712 return ret;
1713 p->bounds = s.r;
1714
1715 /* obtaining defrect */
1716 if (V4L2_TYPE_IS_OUTPUT(p->type))
1717 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
1718 else
1719 s.target = V4L2_SEL_TGT_CROP_DEFAULT;
1720
1721 ret = ops->vidioc_g_selection(file, fh, &s);
1722 if (ret)
1723 return ret;
1724 p->defrect = s.r;
1725
1726 /* setting trivial pixelaspect */
1727 p->pixelaspect.numerator = 1;
1728 p->pixelaspect.denominator = 1;
1729 return 0;
1730}
1731
f16f77b0
HV		 1732static int v4l_log_status(const struct v4l2_ioctl_ops *ops,
1733 struct file *file, void *fh, void *arg)
1734{
1735 struct video_device *vfd = video_devdata(file);
1736 int ret;
1737
1738 if (vfd->v4l2_dev)
1739 pr_info("%s: ================= START STATUS =================\n",
1740 vfd->v4l2_dev->name);
1741 ret = ops->vidioc_log_status(file, fh);
1742 if (vfd->v4l2_dev)
1743 pr_info("%s: ================== END STATUS ==================\n",
1744 vfd->v4l2_dev->name);
1745 return ret;
1746}
1747
1748static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
1749 struct file *file, void *fh, void *arg)
1750{
1751#ifdef CONFIG_VIDEO_ADV_DEBUG
1752 struct v4l2_dbg_register *p = arg;
1753
1754 if (!capable(CAP_SYS_ADMIN))
1755 return -EPERM;
1756 return ops->vidioc_g_register(file, fh, p);
1757#else
1758 return -ENOTTY;
1759#endif
1760}
1761
1762static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
1763 struct file *file, void *fh, void *arg)
1764{
1765#ifdef CONFIG_VIDEO_ADV_DEBUG
1766 struct v4l2_dbg_register *p = arg;
1767
1768 if (!capable(CAP_SYS_ADMIN))
1769 return -EPERM;
1770 return ops->vidioc_s_register(file, fh, p);
1771#else
1772 return -ENOTTY;
1773#endif
1774}
1775
1776static int v4l_dbg_g_chip_ident(const struct v4l2_ioctl_ops *ops,
1777 struct file *file, void *fh, void *arg)
1778{
1779 struct v4l2_dbg_chip_ident *p = arg;
1780
1781 p->ident = V4L2_IDENT_NONE;
1782 p->revision = 0;
1783 return ops->vidioc_g_chip_ident(file, fh, p);
1784}
1785
458aa4a6
HV		 1786static int v4l_dqevent(const struct v4l2_ioctl_ops *ops,
1787 struct file *file, void *fh, void *arg)
1788{
1789 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK);
1790}
1791
1792static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,
1793 struct file *file, void *fh, void *arg)
1794{
1795 return ops->vidioc_subscribe_event(fh, arg);
1796}
1797
1798static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,
1799 struct file *file, void *fh, void *arg)
1800{
1801 return ops->vidioc_unsubscribe_event(fh, arg);
1802}
1803
1804static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,
1805 struct file *file, void *fh, void *arg)
1806{
1807 struct v4l2_sliced_vbi_cap *p = arg;
1808
1809 /* Clear up to type, everything after type is zeroed already */
1810 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
1811
1812 return ops->vidioc_g_sliced_vbi_cap(file, fh, p);
1813}
1814
82b655bf
HV		 1815static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
1816 struct file *file, void *fh, void *arg)
1817{
1818 struct video_device *vfd = video_devdata(file);
1819 struct v4l2_frequency_band *p = arg;
1820 enum v4l2_tuner_type type;
1821 int err;
1822
1823 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1824 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1825
1826 if (type != p->type)
1827 return -EINVAL;
1828 if (ops->vidioc_enum_freq_bands)
1829 return ops->vidioc_enum_freq_bands(file, fh, p);
1830 if (ops->vidioc_g_tuner) {
1831 struct v4l2_tuner t = {
1832 .index = p->tuner,
1833 .type = type,
1834 };
1835
aa4d9b53
HV		 1836 if (p->index)
1837 return -EINVAL;
82b655bf
HV		 1838 err = ops->vidioc_g_tuner(file, fh, &t);
1839 if (err)
1840 return err;
1841 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;
1842 p->rangelow = t.rangelow;
1843 p->rangehigh = t.rangehigh;
1844 p->modulation = (type == V4L2_TUNER_RADIO) ?
1845 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
1846 return 0;
1847 }
1848 if (ops->vidioc_g_modulator) {
1849 struct v4l2_modulator m = {
1850 .index = p->tuner,
1851 };
1852
1853 if (type != V4L2_TUNER_RADIO)
1854 return -EINVAL;
aa4d9b53
HV		 1855 if (p->index)
1856 return -EINVAL;
82b655bf
HV		 1857 err = ops->vidioc_g_modulator(file, fh, &m);
1858 if (err)
1859 return err;
1860 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;
1861 p->rangelow = m.rangelow;
1862 p->rangehigh = m.rangehigh;
1863 p->modulation = (type == V4L2_TUNER_RADIO) ?
1864 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
1865 return 0;
1866 }
1867 return -ENOTTY;
1868}
1869
4839e6c2
HV		 1870struct v4l2_ioctl_info {
1871 unsigned int ioctl;
27cd2aba 1872 u32 flags;
4839e6c2 1873 const char * const name;
86748f35
HV		 1874 union {
1875 u32 offset;
1876 int (*func)(const struct v4l2_ioctl_ops *ops,
1877 struct file *file, void *fh, void *p);
26ddcbcc 1878 } u;
86748f35 1879 void (*debug)(const void *arg, bool write_only);
4839e6c2
HV		 1880};
1881
1882/* This control needs a priority check */
1883#define INFO_FL_PRIO (1 << 0)
1884/* This control can be valid if the filehandle passes a control handler. */
1885#define INFO_FL_CTRL (1 << 1)
86748f35
HV		 1886/* This is a standard ioctl, no need for special code */
1887#define INFO_FL_STD (1 << 2)
1888/* This is ioctl has its own function */
1889#define INFO_FL_FUNC (1 << 3)
5a5adf6b
HV		 1890/* Queuing ioctl */
1891#define INFO_FL_QUEUE (1 << 4)
27cd2aba
HV		 1892/* Zero struct from after the field to the end */
1893#define INFO_FL_CLEAR(v4l2_struct, field) \
1894 ((offsetof(struct v4l2_struct, field) + \
1895 sizeof(((struct v4l2_struct *)0)->field)) << 16)
1896#define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
4839e6c2 1897
86748f35
HV		 1898#define IOCTL_INFO_STD(_ioctl, _vidioc, _debug, _flags) \
1899 [_IOC_NR(_ioctl)] = { \
1900 .ioctl = _ioctl, \
1901 .flags = _flags | INFO_FL_STD, \
1902 .name = #_ioctl, \
26ddcbcc 1903 .u.offset = offsetof(struct v4l2_ioctl_ops, _vidioc), \
86748f35
HV		 1904 .debug = _debug, \
1905 }
1906
1907#define IOCTL_INFO_FNC(_ioctl, _func, _debug, _flags) \
1908 [_IOC_NR(_ioctl)] = { \
1909 .ioctl = _ioctl, \
1910 .flags = _flags | INFO_FL_FUNC, \
1911 .name = #_ioctl, \
26ddcbcc 1912 .u.func = _func, \
86748f35
HV		 1913 .debug = _debug, \
1914 }
1915
4839e6c2 1916static struct v4l2_ioctl_info v4l2_ioctls[] = {
59076122 1917 IOCTL_INFO_FNC(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
be6c64e4
HV		 1918 IOCTL_INFO_FNC(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)),
1919 IOCTL_INFO_FNC(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, INFO_FL_CLEAR(v4l2_format, type)),
1920 IOCTL_INFO_FNC(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
5a5adf6b
HV		 1921 IOCTL_INFO_FNC(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
1922 IOCTL_INFO_FNC(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
be6c64e4
HV		 1923 IOCTL_INFO_STD(VIDIOC_G_FBUF, vidioc_g_fbuf, v4l_print_framebuffer, 0),
1924 IOCTL_INFO_STD(VIDIOC_S_FBUF, vidioc_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
e325b244 1925 IOCTL_INFO_STD(VIDIOC_OVERLAY, vidioc_overlay, v4l_print_u32, INFO_FL_PRIO),
5a5adf6b
HV		 1926 IOCTL_INFO_FNC(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),
1927 IOCTL_INFO_FNC(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),
1928 IOCTL_INFO_FNC(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
1929 IOCTL_INFO_FNC(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
eb3728ed
HV		 1930 IOCTL_INFO_FNC(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
1931 IOCTL_INFO_FNC(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
4b1e2e4d
HV		 1932 IOCTL_INFO_FNC(VIDIOC_G_STD, v4l_g_std, v4l_print_std, 0),
1933 IOCTL_INFO_FNC(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
1934 IOCTL_INFO_FNC(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
59076122 1935 IOCTL_INFO_FNC(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
efbceecd
HV		 1936 IOCTL_INFO_FNC(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
1937 IOCTL_INFO_FNC(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
4b1e2e4d
HV		 1938 IOCTL_INFO_FNC(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
1939 IOCTL_INFO_FNC(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
59076122
HV		 1940 IOCTL_INFO_STD(VIDIOC_G_AUDIO, vidioc_g_audio, v4l_print_audio, 0),
1941 IOCTL_INFO_STD(VIDIOC_S_AUDIO, vidioc_s_audio, v4l_print_audio, INFO_FL_PRIO),
efbceecd
HV		 1942 IOCTL_INFO_FNC(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
1943 IOCTL_INFO_FNC(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
59076122
HV		 1944 IOCTL_INFO_STD(VIDIOC_G_INPUT, vidioc_g_input, v4l_print_u32, 0),
1945 IOCTL_INFO_FNC(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
1946 IOCTL_INFO_STD(VIDIOC_G_OUTPUT, vidioc_g_output, v4l_print_u32, 0),
1947 IOCTL_INFO_FNC(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
1948 IOCTL_INFO_FNC(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
1949 IOCTL_INFO_STD(VIDIOC_G_AUDOUT, vidioc_g_audout, v4l_print_audioout, 0),
1950 IOCTL_INFO_STD(VIDIOC_S_AUDOUT, vidioc_s_audout, v4l_print_audioout, INFO_FL_PRIO),
82b655bf 1951 IOCTL_INFO_FNC(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
4b1e2e4d
HV		 1952 IOCTL_INFO_STD(VIDIOC_S_MODULATOR, vidioc_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
1953 IOCTL_INFO_FNC(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
1954 IOCTL_INFO_FNC(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
d84f2d94
HV		 1955 IOCTL_INFO_FNC(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
1956 IOCTL_INFO_FNC(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
1957 IOCTL_INFO_FNC(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
1958 IOCTL_INFO_STD(VIDIOC_G_SELECTION, vidioc_g_selection, v4l_print_selection, 0),
1959 IOCTL_INFO_STD(VIDIOC_S_SELECTION, vidioc_s_selection, v4l_print_selection, INFO_FL_PRIO),
d806f2df
HV		 1960 IOCTL_INFO_STD(VIDIOC_G_JPEGCOMP, vidioc_g_jpegcomp, v4l_print_jpegcompression, 0),
1961 IOCTL_INFO_STD(VIDIOC_S_JPEGCOMP, vidioc_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
4b1e2e4d 1962 IOCTL_INFO_FNC(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
be6c64e4 1963 IOCTL_INFO_FNC(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
59076122
HV		 1964 IOCTL_INFO_STD(VIDIOC_ENUMAUDIO, vidioc_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
1965 IOCTL_INFO_STD(VIDIOC_ENUMAUDOUT, vidioc_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
d0547cba
HV		 1966 IOCTL_INFO_FNC(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
1967 IOCTL_INFO_FNC(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
458aa4a6 1968 IOCTL_INFO_FNC(VIDIOC_G_SLICED_VBI_CAP, v4l_g_sliced_vbi_cap, v4l_print_sliced_vbi_cap, INFO_FL_CLEAR(v4l2_sliced_vbi_cap, type)),
f16f77b0 1969 IOCTL_INFO_FNC(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
efbceecd
HV		 1970 IOCTL_INFO_FNC(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
1971 IOCTL_INFO_FNC(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL),
9bc31633 1972 IOCTL_INFO_FNC(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
458aa4a6
HV		 1973 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMESIZES, vidioc_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
1974 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMEINTERVALS, vidioc_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
d806f2df
HV		 1975 IOCTL_INFO_STD(VIDIOC_G_ENC_INDEX, vidioc_g_enc_index, v4l_print_enc_idx, 0),
1976 IOCTL_INFO_STD(VIDIOC_ENCODER_CMD, vidioc_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
1977 IOCTL_INFO_STD(VIDIOC_TRY_ENCODER_CMD, vidioc_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
1978 IOCTL_INFO_STD(VIDIOC_DECODER_CMD, vidioc_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
1979 IOCTL_INFO_STD(VIDIOC_TRY_DECODER_CMD, vidioc_try_decoder_cmd, v4l_print_decoder_cmd, 0),
f16f77b0
HV		 1980 IOCTL_INFO_FNC(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
1981 IOCTL_INFO_FNC(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
1982 IOCTL_INFO_FNC(VIDIOC_DBG_G_CHIP_IDENT, v4l_dbg_g_chip_ident, v4l_print_dbg_chip_ident, 0),
4b1e2e4d 1983 IOCTL_INFO_FNC(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
efc626b0
HV		 1984 IOCTL_INFO_STD(VIDIOC_ENUM_DV_PRESETS, vidioc_enum_dv_presets, v4l_print_dv_enum_presets, 0),
1985 IOCTL_INFO_STD(VIDIOC_S_DV_PRESET, vidioc_s_dv_preset, v4l_print_dv_preset, INFO_FL_PRIO),
1986 IOCTL_INFO_STD(VIDIOC_G_DV_PRESET, vidioc_g_dv_preset, v4l_print_dv_preset, 0),
1987 IOCTL_INFO_STD(VIDIOC_QUERY_DV_PRESET, vidioc_query_dv_preset, v4l_print_dv_preset, 0),
1988 IOCTL_INFO_STD(VIDIOC_S_DV_TIMINGS, vidioc_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO),
1989 IOCTL_INFO_STD(VIDIOC_G_DV_TIMINGS, vidioc_g_dv_timings, v4l_print_dv_timings, 0),
458aa4a6
HV		 1990 IOCTL_INFO_FNC(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
1991 IOCTL_INFO_FNC(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
1992 IOCTL_INFO_FNC(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
5a5adf6b
HV		 1993 IOCTL_INFO_FNC(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
1994 IOCTL_INFO_FNC(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
efc626b0
HV		 1995 IOCTL_INFO_STD(VIDIOC_ENUM_DV_TIMINGS, vidioc_enum_dv_timings, v4l_print_enum_dv_timings, 0),
1996 IOCTL_INFO_STD(VIDIOC_QUERY_DV_TIMINGS, vidioc_query_dv_timings, v4l_print_dv_timings, 0),
a1acb8f9 1997 IOCTL_INFO_STD(VIDIOC_DV_TIMINGS_CAP, vidioc_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, type)),
82b655bf 1998 IOCTL_INFO_FNC(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
4839e6c2
HV		 1999};
2000#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
2001
2002bool v4l2_is_known_ioctl(unsigned int cmd)
2003{
2004 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2005 return false;
2006 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
2007}
2008
5a5adf6b
HV		 2009struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd)
2010{
2011 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2012 return vdev->lock;
2013 if (test_bit(_IOC_NR(cmd), vdev->disable_locking))
2014 return NULL;
2015 if (vdev->queue && vdev->queue->lock &&
2016 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
2017 return vdev->queue->lock;
2018 return vdev->lock;
2019}
2020
4839e6c2
HV		 2021/* Common ioctl debug function. This function can be used by
2022 external ioctl messages as well as internal V4L ioctl */
4a085168 2023void v4l_printk_ioctl(const char *prefix, unsigned int cmd)
4839e6c2 2024{
86748f35 2025 const char *dir, *type;
4839e6c2 2026
4a085168
HV		 2027 if (prefix)
2028 printk(KERN_DEBUG "%s: ", prefix);
2029
4839e6c2
HV		 2030 switch (_IOC_TYPE(cmd)) {
2031 case 'd':
2032 type = "v4l2_int";
2033 break;
2034 case 'V':
2035 if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
2036 type = "v4l2";
2037 break;
2038 }
86748f35 2039 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
4839e6c2
HV		 2040 return;
2041 default:
2042 type = "unknown";
86748f35 2043 break;
4839e6c2
HV		 2044 }
2045
2046 switch (_IOC_DIR(cmd)) {
2047 case _IOC_NONE: dir = "--"; break;
2048 case _IOC_READ: dir = "r-"; break;
2049 case _IOC_WRITE: dir = "-w"; break;
2050 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
2051 default: dir = "*ERR*"; break;
2052 }
86748f35 2053 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
4839e6c2
HV		 2054 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
2055}
2056EXPORT_SYMBOL(v4l_printk_ioctl);
2057
069b7479 2058static long __video_do_ioctl(struct file *file,
35ea11ff
HV		 2059 unsigned int cmd, void *arg)
2060{
2061 struct video_device *vfd = video_devdata(file);
a399810c 2062 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
86748f35
HV		 2063 bool write_only = false;
2064 struct v4l2_ioctl_info default_info;
2065 const struct v4l2_ioctl_info *info;
d5fbf32f 2066 void *fh = file->private_data;
99cd47bc 2067 struct v4l2_fh *vfh = NULL;
b1a873a3 2068 int use_fh_prio = 0;
80131fe0 2069 int debug = vfd->debug;
9190d191 2070 long ret = -ENOTTY;
35ea11ff 2071
6a717883 2072 if (ops == NULL) {
4a085168
HV		 2073 pr_warn("%s: has no ioctl_ops.\n",
2074 video_device_node_name(vfd));
9190d191 2075 return ret;
6a717883
HV		 2076 }
2077
b1a873a3 2078 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) {
99cd47bc 2079 vfh = file->private_data;
b1a873a3
HV		 2080 use_fh_prio = test_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
2081 }
99cd47bc 2082
48ea0be0 2083 if (v4l2_is_known_ioctl(cmd)) {
86748f35 2084 info = &v4l2_ioctls[_IOC_NR(cmd)];
48ea0be0
HV		 2085
2086 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) &&
2087 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
86748f35 2088 goto done;
4b902fec
HV		 2089
2090 if (use_fh_prio && (info->flags & INFO_FL_PRIO)) {
2091 ret = v4l2_prio_check(vfd->prio, vfh->prio);
2092 if (ret)
86748f35 2093 goto done;
4b902fec 2094 }
86748f35
HV		 2095 } else {
2096 default_info.ioctl = cmd;
2097 default_info.flags = 0;
f18d8e07 2098 default_info.debug = v4l_print_default;
86748f35 2099 info = &default_info;
48ea0be0
HV		 2100 }
2101
86748f35 2102 write_only = _IOC_DIR(cmd) == _IOC_WRITE;
80131fe0 2103 if (write_only && debug > V4L2_DEBUG_IOCTL) {
4a085168 2104 v4l_printk_ioctl(video_device_node_name(vfd), cmd);
86748f35
HV		 2105 pr_cont(": ");
2106 info->debug(arg, write_only);
2107 }
2108 if (info->flags & INFO_FL_STD) {
2109 typedef int (*vidioc_op)(struct file *file, void *fh, void *p);
2110 const void *p = vfd->ioctl_ops;
26ddcbcc 2111 const vidioc_op *vidioc = p + info->u.offset;
86748f35
HV		 2112
2113 ret = (*vidioc)(file, fh, arg);
86748f35 2114 } else if (info->flags & INFO_FL_FUNC) {
26ddcbcc 2115 ret = info->u.func(ops, file, fh, arg);
f18d8e07
HV		 2116 } else if (!ops->vidioc_default) {
2117 ret = -ENOTTY;
2118 } else {
2119 ret = ops->vidioc_default(file, fh,
2120 use_fh_prio ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
2121 cmd, arg);
48ea0be0 2122 }
99cd47bc 2123
86748f35 2124done:
80131fe0
HV		 2125 if (debug) {
2126 if (write_only && debug > V4L2_DEBUG_IOCTL) {
86748f35
HV		 2127 if (ret < 0)
2128 printk(KERN_DEBUG "%s: error %ld\n",
2129 video_device_node_name(vfd), ret);
2130 return ret;
2131 }
4a085168 2132 v4l_printk_ioctl(video_device_node_name(vfd), cmd);
86748f35
HV		 2133 if (ret < 0)
2134 pr_cont(": error %ld\n", ret);
80131fe0 2135 else if (debug == V4L2_DEBUG_IOCTL)
86748f35 2136 pr_cont("\n");
86748f35
HV		 2137 else if (_IOC_DIR(cmd) == _IOC_NONE)
2138 info->debug(arg, write_only);
2139 else {
2140 pr_cont(": ");
2141 info->debug(arg, write_only);
35ea11ff
HV		 2142 }
2143 }
2144
2145 return ret;
2146}
2147
d14e6d76
PO		 2148static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
2149 void * __user *user_ptr, void ***kernel_ptr)
2150{
2151 int ret = 0;
2152
2153 switch (cmd) {
2154 case VIDIOC_QUERYBUF:
2155 case VIDIOC_QBUF:
2156 case VIDIOC_DQBUF: {
2157 struct v4l2_buffer *buf = parg;
2158
2159 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
2160 if (buf->length > VIDEO_MAX_PLANES) {
2161 ret = -EINVAL;
2162 break;
2163 }
2164 *user_ptr = (void __user *)buf->m.planes;
2ef40370 2165 *kernel_ptr = (void *)&buf->m.planes;
d14e6d76
PO		 2166 *array_size = sizeof(struct v4l2_plane) * buf->length;
2167 ret = 1;
2168 }
2169 break;
2170 }
2171
ed45ce2c
HV		 2172 case VIDIOC_SUBDEV_G_EDID:
2173 case VIDIOC_SUBDEV_S_EDID: {
2174 struct v4l2_subdev_edid *edid = parg;
2175
2176 if (edid->blocks) {
2177 *user_ptr = (void __user *)edid->edid;
2178 *kernel_ptr = (void *)&edid->edid;
2179 *array_size = edid->blocks * 128;
2180 ret = 1;
2181 }
2182 break;
2183 }
2184
d14e6d76
PO		 2185 case VIDIOC_S_EXT_CTRLS:
2186 case VIDIOC_G_EXT_CTRLS:
2187 case VIDIOC_TRY_EXT_CTRLS: {
2188 struct v4l2_ext_controls *ctrls = parg;
2189
2190 if (ctrls->count != 0) {
6c06108b
DC		 2191 if (ctrls->count > V4L2_CID_MAX_CTRLS) {
2192 ret = -EINVAL;
2193 break;
2194 }
d14e6d76 2195 *user_ptr = (void __user *)ctrls->controls;
2ef40370 2196 *kernel_ptr = (void *)&ctrls->controls;
d14e6d76
PO		 2197 *array_size = sizeof(struct v4l2_ext_control)
2198 * ctrls->count;
2199 ret = 1;
2200 }
2201 break;
2202 }
2203 }
2204
2205 return ret;
2206}
2207
fc0a8079
LP		 2208long
2209video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
2210 v4l2_kioctl func)
35ea11ff
HV		 2211{
2212 char sbuf[128];
2213 void *mbuf = NULL;
1d94aa36 2214 void *parg = (void *)arg;
069b7479 2215 long err = -EINVAL;
d14e6d76
PO		 2216 bool has_array_args;
2217 size_t array_size = 0;
35ea11ff 2218 void __user *user_ptr = NULL;
d14e6d76 2219 void **kernel_ptr = NULL;
35ea11ff 2220
35ea11ff 2221 /* Copy arguments into temp kernel buffer */
337f9d20 2222 if (_IOC_DIR(cmd) != _IOC_NONE) {
35ea11ff
HV		 2223 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
2224 parg = sbuf;
2225 } else {
2226 /* too big to allocate from stack */
2227 mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
2228 if (NULL == mbuf)
2229 return -ENOMEM;
2230 parg = mbuf;
2231 }
2232
2233 err = -EFAULT;
19c96e4b 2234 if (_IOC_DIR(cmd) & _IOC_WRITE) {
27cd2aba
HV		 2235 unsigned int n = _IOC_SIZE(cmd);
2236
2237 /*
2238 * In some cases, only a few fields are used as input,
2239 * i.e. when the app sets "index" and then the driver
2240 * fills in the rest of the structure for the thing
2241 * with that index. We only need to copy up the first
2242 * non-input field.
2243 */
2244 if (v4l2_is_known_ioctl(cmd)) {
2245 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags;
2246 if (flags & INFO_FL_CLEAR_MASK)
2247 n = (flags & INFO_FL_CLEAR_MASK) >> 16;
2248 }
19c96e4b
TP		 2249
2250 if (copy_from_user(parg, (void __user *)arg, n))
35ea11ff 2251 goto out;
19c96e4b
TP		 2252
2253 /* zero out anything we don't copy from userspace */
2254 if (n < _IOC_SIZE(cmd))
2255 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n);
337f9d20
TP		 2256 } else {
2257 /* read-only ioctl */
2258 memset(parg, 0, _IOC_SIZE(cmd));
19c96e4b 2259 }
35ea11ff
HV		 2260 }
2261
d14e6d76
PO		 2262 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
2263 if (err < 0)
2264 goto out;
2265 has_array_args = err;
35ea11ff 2266
d14e6d76
PO		 2267 if (has_array_args) {
2268 /*
2269 * When adding new types of array args, make sure that the
2270 * parent argument to ioctl (which contains the pointer to the
2271 * array) fits into sbuf (so that mbuf will still remain
2272 * unused up to here).
2273 */
2274 mbuf = kmalloc(array_size, GFP_KERNEL);
2275 err = -ENOMEM;
2276 if (NULL == mbuf)
2277 goto out_array_args;
2278 err = -EFAULT;
2279 if (copy_from_user(mbuf, user_ptr, array_size))
2280 goto out_array_args;
2281 *kernel_ptr = mbuf;
35ea11ff
HV		 2282 }
2283
2284 /* Handles IOCTL */
fc0a8079 2285 err = func(file, cmd, parg);
35ea11ff 2286 if (err == -ENOIOCTLCMD)
02bbb814 2287 err = -ENOTTY;
35ea11ff 2288
d14e6d76
PO		 2289 if (has_array_args) {
2290 *kernel_ptr = user_ptr;
2291 if (copy_to_user(user_ptr, mbuf, array_size))
35ea11ff 2292 err = -EFAULT;
d14e6d76 2293 goto out_array_args;
35ea11ff 2294 }
5d7758ee
HV		 2295 /* VIDIOC_QUERY_DV_TIMINGS can return an error, but still have valid
2296 results that must be returned. */
2297 if (err < 0 && cmd != VIDIOC_QUERY_DV_TIMINGS)
35ea11ff
HV		 2298 goto out;
2299
d14e6d76 2300out_array_args:
35ea11ff
HV		 2301 /* Copy results into user buffer */
2302 switch (_IOC_DIR(cmd)) {
2303 case _IOC_READ:
2304 case (_IOC_WRITE | _IOC_READ):
2305 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
2306 err = -EFAULT;
2307 break;
2308 }
2309
2310out:
2311 kfree(mbuf);
2312 return err;
2313}
fc0a8079
LP		 2314EXPORT_SYMBOL(video_usercopy);
2315
2316long video_ioctl2(struct file *file,
2317 unsigned int cmd, unsigned long arg)
2318{
2319 return video_usercopy(file, cmd, arg, __video_do_ioctl);
2320}
8a522c91 2321EXPORT_SYMBOL(video_ioctl2);
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