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[media] v4l2-ioctl.c: use the new table for std/tuner/modulator ioctls
[mirror_ubuntu-bionic-kernel.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
59076122
HV		 429static void v4l_print_u32(const void *arg, bool write_only)
430{
431 pr_cont("value=%u\n", *(const u32 *)arg);
432}
433
35ea11ff
HV		 434static void dbgbuf(unsigned int cmd, struct video_device *vfd,
435 struct v4l2_buffer *p)
436{
437 struct v4l2_timecode *tc = &p->timecode;
d14e6d76
PO		 438 struct v4l2_plane *plane;
439 int i;
35ea11ff
HV		 440
441 dbgarg(cmd, "%02ld:%02d:%02d.%08ld index=%d, type=%s, "
d14e6d76 442 "flags=0x%08d, field=%0d, sequence=%d, memory=%s\n",
35ea11ff
HV		 443 p->timestamp.tv_sec / 3600,
444 (int)(p->timestamp.tv_sec / 60) % 60,
445 (int)(p->timestamp.tv_sec % 60),
b045979d 446 (long)p->timestamp.tv_usec,
35ea11ff
HV		 447 p->index,
448 prt_names(p->type, v4l2_type_names),
d14e6d76
PO		 449 p->flags, p->field, p->sequence,
450 prt_names(p->memory, v4l2_memory_names));
451
452 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
453 for (i = 0; i < p->length; ++i) {
454 plane = &p->m.planes[i];
455 dbgarg2("plane %d: bytesused=%d, data_offset=0x%08x "
456 "offset/userptr=0x%08lx, length=%d\n",
457 i, plane->bytesused, plane->data_offset,
458 plane->m.userptr, plane->length);
459 }
460 } else {
461 dbgarg2("bytesused=%d, offset/userptr=0x%08lx, length=%d\n",
462 p->bytesused, p->m.userptr, p->length);
463 }
464
35ea11ff
HV		 465 dbgarg2("timecode=%02d:%02d:%02d type=%d, "
466 "flags=0x%08d, frames=%d, userbits=0x%08x\n",
467 tc->hours, tc->minutes, tc->seconds,
468 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
469}
470
471static inline void dbgrect(struct video_device *vfd, char *s,
472 struct v4l2_rect *r)
473{
474 dbgarg2("%sRect start at %dx%d, size=%dx%d\n", s, r->left, r->top,
475 r->width, r->height);
476};
477
5d7758ee
HV		 478static void dbgtimings(struct video_device *vfd,
479 const struct v4l2_dv_timings *p)
480{
481 switch (p->type) {
482 case V4L2_DV_BT_656_1120:
483 dbgarg2("bt-656/1120:interlaced=%d,"
484 " pixelclock=%lld,"
485 " width=%d, height=%d, polarities=%x,"
486 " hfrontporch=%d, hsync=%d,"
487 " hbackporch=%d, vfrontporch=%d,"
488 " vsync=%d, vbackporch=%d,"
489 " il_vfrontporch=%d, il_vsync=%d,"
490 " il_vbackporch=%d, standards=%x, flags=%x\n",
491 p->bt.interlaced, p->bt.pixelclock,
492 p->bt.width, p->bt.height,
493 p->bt.polarities, p->bt.hfrontporch,
494 p->bt.hsync, p->bt.hbackporch,
495 p->bt.vfrontporch, p->bt.vsync,
496 p->bt.vbackporch, p->bt.il_vfrontporch,
497 p->bt.il_vsync, p->bt.il_vbackporch,
498 p->bt.standards, p->bt.flags);
499 break;
500 default:
501 dbgarg2("Unknown type %d!\n", p->type);
502 break;
503 }
504}
505
35ea11ff
HV		 506static inline void v4l_print_ext_ctrls(unsigned int cmd,
507 struct video_device *vfd, struct v4l2_ext_controls *c, int show_vals)
508{
509 __u32 i;
510
511 if (!(vfd->debug & V4L2_DEBUG_IOCTL_ARG))
512 return;
513 dbgarg(cmd, "");
514 printk(KERN_CONT "class=0x%x", c->ctrl_class);
515 for (i = 0; i < c->count; i++) {
6b5a9492 516 if (show_vals && !c->controls[i].size)
35ea11ff
HV		 517 printk(KERN_CONT " id/val=0x%x/0x%x",
518 c->controls[i].id, c->controls[i].value);
519 else
6b5a9492
HV		 520 printk(KERN_CONT " id=0x%x,size=%u",
521 c->controls[i].id, c->controls[i].size);
35ea11ff
HV		 522 }
523 printk(KERN_CONT "\n");
524};
525
526static inline int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
527{
528 __u32 i;
529
530 /* zero the reserved fields */
531 c->reserved[0] = c->reserved[1] = 0;
6b5a9492 532 for (i = 0; i < c->count; i++)
35ea11ff 533 c->controls[i].reserved2[0] = 0;
6b5a9492 534
35ea11ff
HV		 535 /* V4L2_CID_PRIVATE_BASE cannot be used as control class
536 when using extended controls.
537 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
538 is it allowed for backwards compatibility.
539 */
540 if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE)
541 return 0;
542 /* Check that all controls are from the same control class. */
543 for (i = 0; i < c->count; i++) {
544 if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) {
545 c->error_idx = i;
546 return 0;
547 }
548 }
549 return 1;
550}
551
a399810c 552static int check_fmt(const struct v4l2_ioctl_ops *ops, enum v4l2_buf_type type)
35ea11ff 553{
a399810c
HV		 554 if (ops == NULL)
555 return -EINVAL;
556
35ea11ff
HV		 557 switch (type) {
558 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
d14e6d76
PO		 559 if (ops->vidioc_g_fmt_vid_cap ||
560 ops->vidioc_g_fmt_vid_cap_mplane)
561 return 0;
562 break;
563 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
564 if (ops->vidioc_g_fmt_vid_cap_mplane)
35ea11ff
HV		 565 return 0;
566 break;
567 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1175d613 568 if (ops->vidioc_g_fmt_vid_overlay)
35ea11ff
HV		 569 return 0;
570 break;
571 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
d14e6d76
PO		 572 if (ops->vidioc_g_fmt_vid_out ||
573 ops->vidioc_g_fmt_vid_out_mplane)
574 return 0;
575 break;
576 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
577 if (ops->vidioc_g_fmt_vid_out_mplane)
35ea11ff
HV		 578 return 0;
579 break;
580 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1175d613 581 if (ops->vidioc_g_fmt_vid_out_overlay)
35ea11ff
HV		 582 return 0;
583 break;
584 case V4L2_BUF_TYPE_VBI_CAPTURE:
1175d613 585 if (ops->vidioc_g_fmt_vbi_cap)
35ea11ff
HV		 586 return 0;
587 break;
588 case V4L2_BUF_TYPE_VBI_OUTPUT:
1175d613 589 if (ops->vidioc_g_fmt_vbi_out)
35ea11ff
HV		 590 return 0;
591 break;
592 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1175d613 593 if (ops->vidioc_g_fmt_sliced_vbi_cap)
35ea11ff
HV		 594 return 0;
595 break;
596 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1175d613 597 if (ops->vidioc_g_fmt_sliced_vbi_out)
35ea11ff
HV		 598 return 0;
599 break;
600 case V4L2_BUF_TYPE_PRIVATE:
1175d613 601 if (ops->vidioc_g_fmt_type_private)
35ea11ff
HV		 602 return 0;
603 break;
604 }
605 return -EINVAL;
606}
607
59076122
HV		 608static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
609 struct file *file, void *fh, void *arg)
610{
611 struct v4l2_capability *cap = (struct v4l2_capability *)arg;
612
613 cap->version = LINUX_VERSION_CODE;
614 return ops->vidioc_querycap(file, fh, cap);
615}
616
617static int v4l_s_input(const struct v4l2_ioctl_ops *ops,
618 struct file *file, void *fh, void *arg)
619{
620 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg);
621}
622
623static int v4l_s_output(const struct v4l2_ioctl_ops *ops,
624 struct file *file, void *fh, void *arg)
625{
626 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg);
627}
628
d0547cba
HV		 629static int v4l_g_priority(const struct v4l2_ioctl_ops *ops,
630 struct file *file, void *fh, void *arg)
631{
632 struct video_device *vfd;
633 u32 *p = arg;
634
635 if (ops->vidioc_g_priority)
636 return ops->vidioc_g_priority(file, fh, arg);
637 vfd = video_devdata(file);
638 *p = v4l2_prio_max(&vfd->v4l2_dev->prio);
639 return 0;
640}
641
642static int v4l_s_priority(const struct v4l2_ioctl_ops *ops,
643 struct file *file, void *fh, void *arg)
644{
645 struct video_device *vfd;
646 struct v4l2_fh *vfh;
647 u32 *p = arg;
648
649 if (ops->vidioc_s_priority)
650 return ops->vidioc_s_priority(file, fh, *p);
651 vfd = video_devdata(file);
652 vfh = file->private_data;
653 return v4l2_prio_change(&vfd->v4l2_dev->prio, &vfh->prio, *p);
654}
655
59076122
HV		 656static int v4l_enuminput(const struct v4l2_ioctl_ops *ops,
657 struct file *file, void *fh, void *arg)
658{
659 struct v4l2_input *p = arg;
660
661 /*
662 * We set the flags for CAP_PRESETS, CAP_CUSTOM_TIMINGS &
663 * CAP_STD here based on ioctl handler provided by the
664 * driver. If the driver doesn't support these
665 * for a specific input, it must override these flags.
666 */
667 if (ops->vidioc_s_std)
668 p->capabilities |= V4L2_IN_CAP_STD;
669 if (ops->vidioc_s_dv_preset)
670 p->capabilities |= V4L2_IN_CAP_PRESETS;
671 if (ops->vidioc_s_dv_timings)
672 p->capabilities |= V4L2_IN_CAP_CUSTOM_TIMINGS;
673
674 return ops->vidioc_enum_input(file, fh, p);
675}
676
677static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops,
678 struct file *file, void *fh, void *arg)
679{
680 struct v4l2_output *p = arg;
681
682 /*
683 * We set the flags for CAP_PRESETS, CAP_CUSTOM_TIMINGS &
684 * CAP_STD here based on ioctl handler provided by the
685 * driver. If the driver doesn't support these
686 * for a specific output, it must override these flags.
687 */
688 if (ops->vidioc_s_std)
689 p->capabilities |= V4L2_OUT_CAP_STD;
690 if (ops->vidioc_s_dv_preset)
691 p->capabilities |= V4L2_OUT_CAP_PRESETS;
692 if (ops->vidioc_s_dv_timings)
693 p->capabilities |= V4L2_OUT_CAP_CUSTOM_TIMINGS;
694
695 return ops->vidioc_enum_output(file, fh, p);
696}
697
be6c64e4
HV		 698static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
699 struct file *file, void *fh, void *arg)
700{
701 struct v4l2_fmtdesc *p = arg;
702
703 switch (p->type) {
704 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
705 if (unlikely(!ops->vidioc_enum_fmt_vid_cap))
706 break;
707 return ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
708 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
709 if (unlikely(!ops->vidioc_enum_fmt_vid_cap_mplane))
710 break;
711 return ops->vidioc_enum_fmt_vid_cap_mplane(file, fh, arg);
712 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
713 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay))
714 break;
715 return ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
716 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
717 if (unlikely(!ops->vidioc_enum_fmt_vid_out))
718 break;
719 return ops->vidioc_enum_fmt_vid_out(file, fh, arg);
720 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
721 if (unlikely(!ops->vidioc_enum_fmt_vid_out_mplane))
722 break;
723 return ops->vidioc_enum_fmt_vid_out_mplane(file, fh, arg);
724 case V4L2_BUF_TYPE_PRIVATE:
725 if (unlikely(!ops->vidioc_enum_fmt_type_private))
726 break;
727 return ops->vidioc_enum_fmt_type_private(file, fh, arg);
728 }
729 return -EINVAL;
730}
731
732static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
733 struct file *file, void *fh, void *arg)
734{
735 struct v4l2_format *p = arg;
736
737 switch (p->type) {
738 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
739 if (unlikely(!ops->vidioc_g_fmt_vid_cap))
740 break;
741 return ops->vidioc_g_fmt_vid_cap(file, fh, arg);
742 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
743 if (unlikely(!ops->vidioc_g_fmt_vid_cap_mplane))
744 break;
745 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
746 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
747 if (unlikely(!ops->vidioc_g_fmt_vid_overlay))
748 break;
749 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
750 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
751 if (unlikely(!ops->vidioc_g_fmt_vid_out))
752 break;
753 return ops->vidioc_g_fmt_vid_out(file, fh, arg);
754 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
755 if (unlikely(!ops->vidioc_g_fmt_vid_out_mplane))
756 break;
757 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
758 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
759 if (unlikely(!ops->vidioc_g_fmt_vid_out_overlay))
760 break;
761 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
762 case V4L2_BUF_TYPE_VBI_CAPTURE:
763 if (unlikely(!ops->vidioc_g_fmt_vbi_cap))
764 break;
765 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
766 case V4L2_BUF_TYPE_VBI_OUTPUT:
767 if (unlikely(!ops->vidioc_g_fmt_vbi_out))
768 break;
769 return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
770 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
771 if (unlikely(!ops->vidioc_g_fmt_sliced_vbi_cap))
772 break;
773 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
774 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
775 if (unlikely(!ops->vidioc_g_fmt_sliced_vbi_out))
776 break;
777 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
778 case V4L2_BUF_TYPE_PRIVATE:
779 if (unlikely(!ops->vidioc_g_fmt_type_private))
780 break;
781 return ops->vidioc_g_fmt_type_private(file, fh, arg);
782 }
783 return -EINVAL;
784}
785
786static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
787 struct file *file, void *fh, void *arg)
788{
789 struct v4l2_format *p = arg;
790
791 switch (p->type) {
792 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
793 if (unlikely(!ops->vidioc_s_fmt_vid_cap))
794 break;
795 CLEAR_AFTER_FIELD(p, fmt.pix);
796 return ops->vidioc_s_fmt_vid_cap(file, fh, arg);
797 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
798 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane))
799 break;
800 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
801 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
802 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
803 if (unlikely(!ops->vidioc_s_fmt_vid_overlay))
804 break;
805 CLEAR_AFTER_FIELD(p, fmt.win);
806 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
807 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
808 if (unlikely(!ops->vidioc_s_fmt_vid_out))
809 break;
810 CLEAR_AFTER_FIELD(p, fmt.pix);
811 return ops->vidioc_s_fmt_vid_out(file, fh, arg);
812 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
813 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane))
814 break;
815 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
816 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
817 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
818 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay))
819 break;
820 CLEAR_AFTER_FIELD(p, fmt.win);
821 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
822 case V4L2_BUF_TYPE_VBI_CAPTURE:
823 if (unlikely(!ops->vidioc_s_fmt_vbi_cap))
824 break;
825 CLEAR_AFTER_FIELD(p, fmt.vbi);
826 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
827 case V4L2_BUF_TYPE_VBI_OUTPUT:
828 if (unlikely(!ops->vidioc_s_fmt_vbi_out))
829 break;
830 CLEAR_AFTER_FIELD(p, fmt.vbi);
831 return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
832 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
833 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap))
834 break;
835 CLEAR_AFTER_FIELD(p, fmt.sliced);
836 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
837 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
838 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out))
839 break;
840 CLEAR_AFTER_FIELD(p, fmt.sliced);
841 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
842 case V4L2_BUF_TYPE_PRIVATE:
843 if (unlikely(!ops->vidioc_s_fmt_type_private))
844 break;
845 return ops->vidioc_s_fmt_type_private(file, fh, arg);
846 }
847 return -EINVAL;
848}
849
850static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
851 struct file *file, void *fh, void *arg)
852{
853 struct v4l2_format *p = arg;
854
855 switch (p->type) {
856 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
857 if (unlikely(!ops->vidioc_try_fmt_vid_cap))
858 break;
859 CLEAR_AFTER_FIELD(p, fmt.pix);
860 return ops->vidioc_try_fmt_vid_cap(file, fh, arg);
861 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
862 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane))
863 break;
864 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
865 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
866 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
867 if (unlikely(!ops->vidioc_try_fmt_vid_overlay))
868 break;
869 CLEAR_AFTER_FIELD(p, fmt.win);
870 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
871 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
872 if (unlikely(!ops->vidioc_try_fmt_vid_out))
873 break;
874 CLEAR_AFTER_FIELD(p, fmt.pix);
875 return ops->vidioc_try_fmt_vid_out(file, fh, arg);
876 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
877 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane))
878 break;
879 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
880 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
881 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
882 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay))
883 break;
884 CLEAR_AFTER_FIELD(p, fmt.win);
885 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
886 case V4L2_BUF_TYPE_VBI_CAPTURE:
887 if (unlikely(!ops->vidioc_try_fmt_vbi_cap))
888 break;
889 CLEAR_AFTER_FIELD(p, fmt.vbi);
890 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
891 case V4L2_BUF_TYPE_VBI_OUTPUT:
892 if (unlikely(!ops->vidioc_try_fmt_vbi_out))
893 break;
894 CLEAR_AFTER_FIELD(p, fmt.vbi);
895 return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
896 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
897 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap))
898 break;
899 CLEAR_AFTER_FIELD(p, fmt.sliced);
900 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
901 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
902 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out))
903 break;
904 CLEAR_AFTER_FIELD(p, fmt.sliced);
905 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
906 case V4L2_BUF_TYPE_PRIVATE:
907 if (unlikely(!ops->vidioc_try_fmt_type_private))
908 break;
909 return ops->vidioc_try_fmt_type_private(file, fh, arg);
910 }
911 return -EINVAL;
912}
913
e325b244
HV		 914static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
915 struct file *file, void *fh, void *arg)
916{
917 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
918}
919
920static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
921 struct file *file, void *fh, void *arg)
922{
923 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
924}
925
4b1e2e4d
HV		 926static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,
927 struct file *file, void *fh, void *arg)
928{
929 struct video_device *vfd = video_devdata(file);
930 struct v4l2_tuner *p = arg;
931
932 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
933 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
934 return ops->vidioc_g_tuner(file, fh, p);
935}
936
937static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
938 struct file *file, void *fh, void *arg)
939{
940 struct video_device *vfd = video_devdata(file);
941 struct v4l2_tuner *p = arg;
942
943 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
944 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
945 return ops->vidioc_s_tuner(file, fh, p);
946}
947
948static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
949 struct file *file, void *fh, void *arg)
950{
951 struct video_device *vfd = video_devdata(file);
952 struct v4l2_frequency *p = arg;
953
954 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
955 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
956 return ops->vidioc_g_frequency(file, fh, p);
957}
958
959static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
960 struct file *file, void *fh, void *arg)
961{
962 struct video_device *vfd = video_devdata(file);
963 struct v4l2_frequency *p = arg;
964 enum v4l2_tuner_type type;
965
966 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
967 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
968 if (p->type != type)
969 return -EINVAL;
970 return ops->vidioc_s_frequency(file, fh, p);
971}
972
973static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
974 struct file *file, void *fh, void *arg)
975{
976 struct video_device *vfd = video_devdata(file);
977 struct v4l2_standard *p = arg;
978 v4l2_std_id id = vfd->tvnorms, curr_id = 0;
979 unsigned int index = p->index, i, j = 0;
980 const char *descr = "";
981
982 /* Return norm array in a canonical way */
983 for (i = 0; i <= index && id; i++) {
984 /* last std value in the standards array is 0, so this
985 while always ends there since (id & 0) == 0. */
986 while ((id & standards[j].std) != standards[j].std)
987 j++;
988 curr_id = standards[j].std;
989 descr = standards[j].descr;
990 j++;
991 if (curr_id == 0)
992 break;
993 if (curr_id != V4L2_STD_PAL &&
994 curr_id != V4L2_STD_SECAM &&
995 curr_id != V4L2_STD_NTSC)
996 id &= ~curr_id;
997 }
998 if (i <= index)
999 return -EINVAL;
1000
1001 v4l2_video_std_construct(p, curr_id, descr);
1002 return 0;
1003}
1004
1005static int v4l_g_std(const struct v4l2_ioctl_ops *ops,
1006 struct file *file, void *fh, void *arg)
1007{
1008 struct video_device *vfd = video_devdata(file);
1009 v4l2_std_id *id = arg;
1010
1011 /* Calls the specific handler */
1012 if (ops->vidioc_g_std)
1013 return ops->vidioc_g_std(file, fh, arg);
1014 if (vfd->current_norm) {
1015 *id = vfd->current_norm;
1016 return 0;
1017 }
1018 return -ENOTTY;
1019}
1020
1021static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
1022 struct file *file, void *fh, void *arg)
1023{
1024 struct video_device *vfd = video_devdata(file);
1025 v4l2_std_id *id = arg, norm;
1026 int ret;
1027
1028 norm = (*id) & vfd->tvnorms;
1029 if (vfd->tvnorms && !norm) /* Check if std is supported */
1030 return -EINVAL;
1031
1032 /* Calls the specific handler */
1033 ret = ops->vidioc_s_std(file, fh, &norm);
1034
1035 /* Updates standard information */
1036 if (ret >= 0)
1037 vfd->current_norm = norm;
1038 return ret;
1039}
1040
1041static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
1042 struct file *file, void *fh, void *arg)
1043{
1044 struct video_device *vfd = video_devdata(file);
1045 v4l2_std_id *p = arg;
1046
1047 /*
1048 * If nothing detected, it should return all supported
1049 * standard.
1050 * Drivers just need to mask the std argument, in order
1051 * to remove the standards that don't apply from the mask.
1052 * This means that tuners, audio and video decoders can join
1053 * their efforts to improve the standards detection.
1054 */
1055 *p = vfd->tvnorms;
1056 return ops->vidioc_querystd(file, fh, arg);
1057}
1058
1059static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
1060 struct file *file, void *fh, void *arg)
1061{
1062 struct video_device *vfd = video_devdata(file);
1063 struct v4l2_hw_freq_seek *p = arg;
1064 enum v4l2_tuner_type type;
1065
1066 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1067 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1068 if (p->type != type)
1069 return -EINVAL;
1070 return ops->vidioc_s_hw_freq_seek(file, fh, p);
1071}
1072
4839e6c2
HV		 1073struct v4l2_ioctl_info {
1074 unsigned int ioctl;
27cd2aba 1075 u32 flags;
4839e6c2 1076 const char * const name;
86748f35
HV		 1077 union {
1078 u32 offset;
1079 int (*func)(const struct v4l2_ioctl_ops *ops,
1080 struct file *file, void *fh, void *p);
1081 };
1082 void (*debug)(const void *arg, bool write_only);
4839e6c2
HV		 1083};
1084
1085/* This control needs a priority check */
1086#define INFO_FL_PRIO (1 << 0)
1087/* This control can be valid if the filehandle passes a control handler. */
1088#define INFO_FL_CTRL (1 << 1)
86748f35
HV		 1089/* This is a standard ioctl, no need for special code */
1090#define INFO_FL_STD (1 << 2)
1091/* This is ioctl has its own function */
1092#define INFO_FL_FUNC (1 << 3)
27cd2aba
HV		 1093/* Zero struct from after the field to the end */
1094#define INFO_FL_CLEAR(v4l2_struct, field) \
1095 ((offsetof(struct v4l2_struct, field) + \
1096 sizeof(((struct v4l2_struct *)0)->field)) << 16)
1097#define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
4839e6c2
HV		 1098
1099#define IOCTL_INFO(_ioctl, _flags) [_IOC_NR(_ioctl)] = { \
1100 .ioctl = _ioctl, \
1101 .flags = _flags, \
1102 .name = #_ioctl, \
1103}
1104
86748f35
HV		 1105#define IOCTL_INFO_STD(_ioctl, _vidioc, _debug, _flags) \
1106 [_IOC_NR(_ioctl)] = { \
1107 .ioctl = _ioctl, \
1108 .flags = _flags | INFO_FL_STD, \
1109 .name = #_ioctl, \
1110 .offset = offsetof(struct v4l2_ioctl_ops, _vidioc), \
1111 .debug = _debug, \
1112 }
1113
1114#define IOCTL_INFO_FNC(_ioctl, _func, _debug, _flags) \
1115 [_IOC_NR(_ioctl)] = { \
1116 .ioctl = _ioctl, \
1117 .flags = _flags | INFO_FL_FUNC, \
1118 .name = #_ioctl, \
1119 .func = _func, \
1120 .debug = _debug, \
1121 }
1122
4839e6c2 1123static struct v4l2_ioctl_info v4l2_ioctls[] = {
59076122 1124 IOCTL_INFO_FNC(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
be6c64e4
HV		 1125 IOCTL_INFO_FNC(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)),
1126 IOCTL_INFO_FNC(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, INFO_FL_CLEAR(v4l2_format, type)),
1127 IOCTL_INFO_FNC(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
4839e6c2 1128 IOCTL_INFO(VIDIOC_REQBUFS, INFO_FL_PRIO),
27cd2aba 1129 IOCTL_INFO(VIDIOC_QUERYBUF, INFO_FL_CLEAR(v4l2_buffer, length)),
be6c64e4
HV		 1130 IOCTL_INFO_STD(VIDIOC_G_FBUF, vidioc_g_fbuf, v4l_print_framebuffer, 0),
1131 IOCTL_INFO_STD(VIDIOC_S_FBUF, vidioc_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
e325b244 1132 IOCTL_INFO_STD(VIDIOC_OVERLAY, vidioc_overlay, v4l_print_u32, INFO_FL_PRIO),
4839e6c2
HV		 1133 IOCTL_INFO(VIDIOC_QBUF, 0),
1134 IOCTL_INFO(VIDIOC_DQBUF, 0),
e325b244
HV		 1135 IOCTL_INFO_FNC(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO),
1136 IOCTL_INFO_FNC(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO),
27cd2aba 1137 IOCTL_INFO(VIDIOC_G_PARM, INFO_FL_CLEAR(v4l2_streamparm, type)),
4839e6c2 1138 IOCTL_INFO(VIDIOC_S_PARM, INFO_FL_PRIO),
4b1e2e4d
HV		 1139 IOCTL_INFO_FNC(VIDIOC_G_STD, v4l_g_std, v4l_print_std, 0),
1140 IOCTL_INFO_FNC(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
1141 IOCTL_INFO_FNC(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
59076122 1142 IOCTL_INFO_FNC(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
4839e6c2
HV		 1143 IOCTL_INFO(VIDIOC_G_CTRL, INFO_FL_CTRL),
1144 IOCTL_INFO(VIDIOC_S_CTRL, INFO_FL_PRIO | INFO_FL_CTRL),
4b1e2e4d
HV		 1145 IOCTL_INFO_FNC(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
1146 IOCTL_INFO_FNC(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
59076122
HV		 1147 IOCTL_INFO_STD(VIDIOC_G_AUDIO, vidioc_g_audio, v4l_print_audio, 0),
1148 IOCTL_INFO_STD(VIDIOC_S_AUDIO, vidioc_s_audio, v4l_print_audio, INFO_FL_PRIO),
27cd2aba
HV		 1149 IOCTL_INFO(VIDIOC_QUERYCTRL, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
1150 IOCTL_INFO(VIDIOC_QUERYMENU, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
59076122
HV		 1151 IOCTL_INFO_STD(VIDIOC_G_INPUT, vidioc_g_input, v4l_print_u32, 0),
1152 IOCTL_INFO_FNC(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
1153 IOCTL_INFO_STD(VIDIOC_G_OUTPUT, vidioc_g_output, v4l_print_u32, 0),
1154 IOCTL_INFO_FNC(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
1155 IOCTL_INFO_FNC(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
1156 IOCTL_INFO_STD(VIDIOC_G_AUDOUT, vidioc_g_audout, v4l_print_audioout, 0),
1157 IOCTL_INFO_STD(VIDIOC_S_AUDOUT, vidioc_s_audout, v4l_print_audioout, INFO_FL_PRIO),
4b1e2e4d
HV		 1158 IOCTL_INFO_STD(VIDIOC_G_MODULATOR, vidioc_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
1159 IOCTL_INFO_STD(VIDIOC_S_MODULATOR, vidioc_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
1160 IOCTL_INFO_FNC(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
1161 IOCTL_INFO_FNC(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
27cd2aba
HV		 1162 IOCTL_INFO(VIDIOC_CROPCAP, INFO_FL_CLEAR(v4l2_cropcap, type)),
1163 IOCTL_INFO(VIDIOC_G_CROP, INFO_FL_CLEAR(v4l2_crop, type)),
4839e6c2
HV		 1164 IOCTL_INFO(VIDIOC_S_CROP, INFO_FL_PRIO),
1165 IOCTL_INFO(VIDIOC_G_SELECTION, 0),
1166 IOCTL_INFO(VIDIOC_S_SELECTION, INFO_FL_PRIO),
1167 IOCTL_INFO(VIDIOC_G_JPEGCOMP, 0),
1168 IOCTL_INFO(VIDIOC_S_JPEGCOMP, INFO_FL_PRIO),
4b1e2e4d 1169 IOCTL_INFO_FNC(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
be6c64e4 1170 IOCTL_INFO_FNC(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
59076122
HV		 1171 IOCTL_INFO_STD(VIDIOC_ENUMAUDIO, vidioc_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
1172 IOCTL_INFO_STD(VIDIOC_ENUMAUDOUT, vidioc_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
d0547cba
HV		 1173 IOCTL_INFO_FNC(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
1174 IOCTL_INFO_FNC(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
27cd2aba 1175 IOCTL_INFO(VIDIOC_G_SLICED_VBI_CAP, INFO_FL_CLEAR(v4l2_sliced_vbi_cap, type)),
4839e6c2
HV		 1176 IOCTL_INFO(VIDIOC_LOG_STATUS, 0),
1177 IOCTL_INFO(VIDIOC_G_EXT_CTRLS, INFO_FL_CTRL),
1178 IOCTL_INFO(VIDIOC_S_EXT_CTRLS, INFO_FL_PRIO | INFO_FL_CTRL),
1179 IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, 0),
27cd2aba
HV		 1180 IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
1181 IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
4839e6c2 1182 IOCTL_INFO(VIDIOC_G_ENC_INDEX, 0),
27cd2aba
HV		 1183 IOCTL_INFO(VIDIOC_ENCODER_CMD, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
1184 IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
4839e6c2
HV		 1185 IOCTL_INFO(VIDIOC_DECODER_CMD, INFO_FL_PRIO),
1186 IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, 0),
4839e6c2
HV		 1187 IOCTL_INFO(VIDIOC_DBG_S_REGISTER, 0),
1188 IOCTL_INFO(VIDIOC_DBG_G_REGISTER, 0),
4839e6c2 1189 IOCTL_INFO(VIDIOC_DBG_G_CHIP_IDENT, 0),
4b1e2e4d 1190 IOCTL_INFO_FNC(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
4839e6c2
HV		 1191 IOCTL_INFO(VIDIOC_ENUM_DV_PRESETS, 0),
1192 IOCTL_INFO(VIDIOC_S_DV_PRESET, INFO_FL_PRIO),
1193 IOCTL_INFO(VIDIOC_G_DV_PRESET, 0),
1194 IOCTL_INFO(VIDIOC_QUERY_DV_PRESET, 0),
1195 IOCTL_INFO(VIDIOC_S_DV_TIMINGS, INFO_FL_PRIO),
1196 IOCTL_INFO(VIDIOC_G_DV_TIMINGS, 0),
1197 IOCTL_INFO(VIDIOC_DQEVENT, 0),
1198 IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, 0),
1199 IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, 0),
1200 IOCTL_INFO(VIDIOC_CREATE_BUFS, INFO_FL_PRIO),
1201 IOCTL_INFO(VIDIOC_PREPARE_BUF, 0),
1202 IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, 0),
1203 IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, 0),
1204 IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, 0),
1205};
1206#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
1207
1208bool v4l2_is_known_ioctl(unsigned int cmd)
1209{
1210 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
1211 return false;
1212 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
1213}
1214
1215/* Common ioctl debug function. This function can be used by
1216 external ioctl messages as well as internal V4L ioctl */
1217void v4l_printk_ioctl(unsigned int cmd)
1218{
86748f35 1219 const char *dir, *type;
4839e6c2
HV		 1220
1221 switch (_IOC_TYPE(cmd)) {
1222 case 'd':
1223 type = "v4l2_int";
1224 break;
1225 case 'V':
1226 if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
1227 type = "v4l2";
1228 break;
1229 }
86748f35 1230 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
4839e6c2
HV		 1231 return;
1232 default:
1233 type = "unknown";
86748f35 1234 break;
4839e6c2
HV		 1235 }
1236
1237 switch (_IOC_DIR(cmd)) {
1238 case _IOC_NONE: dir = "--"; break;
1239 case _IOC_READ: dir = "r-"; break;
1240 case _IOC_WRITE: dir = "-w"; break;
1241 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
1242 default: dir = "*ERR*"; break;
1243 }
86748f35 1244 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
4839e6c2
HV		 1245 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
1246}
1247EXPORT_SYMBOL(v4l_printk_ioctl);
1248
069b7479 1249static long __video_do_ioctl(struct file *file,
35ea11ff
HV		 1250 unsigned int cmd, void *arg)
1251{
1252 struct video_device *vfd = video_devdata(file);
a399810c 1253 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
86748f35
HV		 1254 bool write_only = false;
1255 struct v4l2_ioctl_info default_info;
1256 const struct v4l2_ioctl_info *info;
d5fbf32f 1257 void *fh = file->private_data;
99cd47bc 1258 struct v4l2_fh *vfh = NULL;
b1a873a3 1259 int use_fh_prio = 0;
9190d191 1260 long ret = -ENOTTY;
35ea11ff 1261
6a717883
HV		 1262 if (ops == NULL) {
1263 printk(KERN_WARNING "videodev: \"%s\" has no ioctl_ops.\n",
1264 vfd->name);
9190d191 1265 return ret;
6a717883
HV		 1266 }
1267
b1a873a3 1268 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) {
99cd47bc 1269 vfh = file->private_data;
b1a873a3
HV		 1270 use_fh_prio = test_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
1271 }
99cd47bc 1272
48ea0be0 1273 if (v4l2_is_known_ioctl(cmd)) {
86748f35 1274 info = &v4l2_ioctls[_IOC_NR(cmd)];
48ea0be0
HV		 1275
1276 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) &&
1277 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
86748f35 1278 goto done;
4b902fec
HV		 1279
1280 if (use_fh_prio && (info->flags & INFO_FL_PRIO)) {
1281 ret = v4l2_prio_check(vfd->prio, vfh->prio);
1282 if (ret)
86748f35 1283 goto done;
4b902fec 1284 }
86748f35
HV		 1285 } else {
1286 default_info.ioctl = cmd;
1287 default_info.flags = 0;
1288 default_info.debug = NULL;
1289 info = &default_info;
48ea0be0
HV		 1290 }
1291
86748f35
HV		 1292 write_only = _IOC_DIR(cmd) == _IOC_WRITE;
1293 if (info->debug && write_only && vfd->debug > V4L2_DEBUG_IOCTL) {
48ea0be0 1294 v4l_print_ioctl(vfd->name, cmd);
86748f35
HV		 1295 pr_cont(": ");
1296 info->debug(arg, write_only);
1297 }
1298 if (info->flags & INFO_FL_STD) {
1299 typedef int (*vidioc_op)(struct file *file, void *fh, void *p);
1300 const void *p = vfd->ioctl_ops;
1301 const vidioc_op *vidioc = p + info->offset;
1302
1303 ret = (*vidioc)(file, fh, arg);
1304 goto done;
1305 } else if (info->flags & INFO_FL_FUNC) {
1306 ret = info->func(ops, file, fh, arg);
1307 goto done;
48ea0be0 1308 }
99cd47bc 1309
6a717883 1310 switch (cmd) {
35ea11ff
HV		 1311 /* FIXME: Those buf reqs could be handled here,
1312 with some changes on videobuf to allow its header to be included at
1313 videodev2.h or being merged at videodev2.
1314 */
1315 case VIDIOC_REQBUFS:
1316 {
1317 struct v4l2_requestbuffers *p = arg;
1318
a399810c 1319 ret = check_fmt(ops, p->type);
35ea11ff
HV		 1320 if (ret)
1321 break;
1322
7ecc0cf9
TP		 1323 if (p->type < V4L2_BUF_TYPE_PRIVATE)
1324 CLEAR_AFTER_FIELD(p, memory);
1325
a399810c 1326 ret = ops->vidioc_reqbufs(file, fh, p);
35ea11ff
HV		 1327 dbgarg(cmd, "count=%d, type=%s, memory=%s\n",
1328 p->count,
1329 prt_names(p->type, v4l2_type_names),
1330 prt_names(p->memory, v4l2_memory_names));
1331 break;
1332 }
1333 case VIDIOC_QUERYBUF:
1334 {
1335 struct v4l2_buffer *p = arg;
1336
a399810c 1337 ret = check_fmt(ops, p->type);
35ea11ff
HV		 1338 if (ret)
1339 break;
1340
a399810c 1341 ret = ops->vidioc_querybuf(file, fh, p);
35ea11ff
HV		 1342 if (!ret)
1343 dbgbuf(cmd, vfd, p);
1344 break;
1345 }
1346 case VIDIOC_QBUF:
1347 {
1348 struct v4l2_buffer *p = arg;
1349
a399810c 1350 ret = check_fmt(ops, p->type);
35ea11ff
HV		 1351 if (ret)
1352 break;
1353
a399810c 1354 ret = ops->vidioc_qbuf(file, fh, p);
35ea11ff
HV		 1355 if (!ret)
1356 dbgbuf(cmd, vfd, p);
1357 break;
1358 }
1359 case VIDIOC_DQBUF:
1360 {
1361 struct v4l2_buffer *p = arg;
1362
a399810c 1363 ret = check_fmt(ops, p->type);
35ea11ff
HV		 1364 if (ret)
1365 break;
1366
a399810c 1367 ret = ops->vidioc_dqbuf(file, fh, p);
35ea11ff
HV		 1368 if (!ret)
1369 dbgbuf(cmd, vfd, p);
1370 break;
1371 }
35ea11ff
HV		 1372
1373 /* --- controls ---------------------------------------------- */
1374 case VIDIOC_QUERYCTRL:
1375 {
1376 struct v4l2_queryctrl *p = arg;
1377
2d28b686
HV		 1378 if (vfh && vfh->ctrl_handler)
1379 ret = v4l2_queryctrl(vfh->ctrl_handler, p);
1380 else if (vfd->ctrl_handler)
11bbc1ca
HV		 1381 ret = v4l2_queryctrl(vfd->ctrl_handler, p);
1382 else if (ops->vidioc_queryctrl)
1383 ret = ops->vidioc_queryctrl(file, fh, p);
1384 else
35ea11ff 1385 break;
35ea11ff
HV		 1386 if (!ret)
1387 dbgarg(cmd, "id=0x%x, type=%d, name=%s, min/max=%d/%d, "
1388 "step=%d, default=%d, flags=0x%08x\n",
1389 p->id, p->type, p->name,
1390 p->minimum, p->maximum,
1391 p->step, p->default_value, p->flags);
1392 else
1393 dbgarg(cmd, "id=0x%x\n", p->id);
1394 break;
1395 }
1396 case VIDIOC_G_CTRL:
1397 {
1398 struct v4l2_control *p = arg;
1399
2d28b686
HV		 1400 if (vfh && vfh->ctrl_handler)
1401 ret = v4l2_g_ctrl(vfh->ctrl_handler, p);
1402 else if (vfd->ctrl_handler)
11bbc1ca
HV		 1403 ret = v4l2_g_ctrl(vfd->ctrl_handler, p);
1404 else if (ops->vidioc_g_ctrl)
a399810c
HV		 1405 ret = ops->vidioc_g_ctrl(file, fh, p);
1406 else if (ops->vidioc_g_ext_ctrls) {
35ea11ff
HV		 1407 struct v4l2_ext_controls ctrls;
1408 struct v4l2_ext_control ctrl;
1409
1410 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1411 ctrls.count = 1;
1412 ctrls.controls = &ctrl;
1413 ctrl.id = p->id;
1414 ctrl.value = p->value;
1415 if (check_ext_ctrls(&ctrls, 1)) {
a399810c 1416 ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
35ea11ff
HV		 1417 if (ret == 0)
1418 p->value = ctrl.value;
1419 }
1420 } else
1421 break;
1422 if (!ret)
1423 dbgarg(cmd, "id=0x%x, value=%d\n", p->id, p->value);
1424 else
1425 dbgarg(cmd, "id=0x%x\n", p->id);
1426 break;
1427 }
1428 case VIDIOC_S_CTRL:
1429 {
1430 struct v4l2_control *p = arg;
1431 struct v4l2_ext_controls ctrls;
1432 struct v4l2_ext_control ctrl;
1433
2d28b686 1434 if (!(vfh && vfh->ctrl_handler) && !vfd->ctrl_handler &&
11bbc1ca 1435 !ops->vidioc_s_ctrl && !ops->vidioc_s_ext_ctrls)
35ea11ff
HV		 1436 break;
1437
1438 dbgarg(cmd, "id=0x%x, value=%d\n", p->id, p->value);
1439
2d28b686 1440 if (vfh && vfh->ctrl_handler) {
ab892bac 1441 ret = v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
2d28b686
HV		 1442 break;
1443 }
11bbc1ca 1444 if (vfd->ctrl_handler) {
ab892bac 1445 ret = v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
11bbc1ca
HV		 1446 break;
1447 }
a399810c
HV		 1448 if (ops->vidioc_s_ctrl) {
1449 ret = ops->vidioc_s_ctrl(file, fh, p);
35ea11ff
HV		 1450 break;
1451 }
a399810c 1452 if (!ops->vidioc_s_ext_ctrls)
35ea11ff
HV		 1453 break;
1454
1455 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1456 ctrls.count = 1;
1457 ctrls.controls = &ctrl;
1458 ctrl.id = p->id;
1459 ctrl.value = p->value;
1460 if (check_ext_ctrls(&ctrls, 1))
a399810c 1461 ret = ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
93d5a30b
HV		 1462 else
1463 ret = -EINVAL;
35ea11ff
HV		 1464 break;
1465 }
1466 case VIDIOC_G_EXT_CTRLS:
1467 {
1468 struct v4l2_ext_controls *p = arg;
1469
1470 p->error_idx = p->count;
2d28b686
HV		 1471 if (vfh && vfh->ctrl_handler)
1472 ret = v4l2_g_ext_ctrls(vfh->ctrl_handler, p);
1473 else if (vfd->ctrl_handler)
11bbc1ca 1474 ret = v4l2_g_ext_ctrls(vfd->ctrl_handler, p);
93d5a30b
HV		 1475 else if (ops->vidioc_g_ext_ctrls)
1476 ret = check_ext_ctrls(p, 0) ?
1477 ops->vidioc_g_ext_ctrls(file, fh, p) :
1478 -EINVAL;
11bbc1ca
HV		 1479 else
1480 break;
35ea11ff
HV		 1481 v4l_print_ext_ctrls(cmd, vfd, p, !ret);
1482 break;
1483 }
1484 case VIDIOC_S_EXT_CTRLS:
1485 {
1486 struct v4l2_ext_controls *p = arg;
1487
1488 p->error_idx = p->count;
2d28b686
HV		 1489 if (!(vfh && vfh->ctrl_handler) && !vfd->ctrl_handler &&
1490 !ops->vidioc_s_ext_ctrls)
35ea11ff
HV		 1491 break;
1492 v4l_print_ext_ctrls(cmd, vfd, p, 1);
2d28b686 1493 if (vfh && vfh->ctrl_handler)
ab892bac 1494 ret = v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, p);
2d28b686 1495 else if (vfd->ctrl_handler)
ab892bac 1496 ret = v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, p);
11bbc1ca 1497 else if (check_ext_ctrls(p, 0))
a399810c 1498 ret = ops->vidioc_s_ext_ctrls(file, fh, p);
93d5a30b
HV		 1499 else
1500 ret = -EINVAL;
35ea11ff
HV		 1501 break;
1502 }
1503 case VIDIOC_TRY_EXT_CTRLS:
1504 {
1505 struct v4l2_ext_controls *p = arg;
1506
1507 p->error_idx = p->count;
2d28b686
HV		 1508 if (!(vfh && vfh->ctrl_handler) && !vfd->ctrl_handler &&
1509 !ops->vidioc_try_ext_ctrls)
35ea11ff
HV		 1510 break;
1511 v4l_print_ext_ctrls(cmd, vfd, p, 1);
2d28b686
HV		 1512 if (vfh && vfh->ctrl_handler)
1513 ret = v4l2_try_ext_ctrls(vfh->ctrl_handler, p);
1514 else if (vfd->ctrl_handler)
11bbc1ca
HV		 1515 ret = v4l2_try_ext_ctrls(vfd->ctrl_handler, p);
1516 else if (check_ext_ctrls(p, 0))
a399810c 1517 ret = ops->vidioc_try_ext_ctrls(file, fh, p);
93d5a30b
HV		 1518 else
1519 ret = -EINVAL;
35ea11ff
HV		 1520 break;
1521 }
1522 case VIDIOC_QUERYMENU:
1523 {
1524 struct v4l2_querymenu *p = arg;
1525
2d28b686
HV		 1526 if (vfh && vfh->ctrl_handler)
1527 ret = v4l2_querymenu(vfh->ctrl_handler, p);
1528 else if (vfd->ctrl_handler)
11bbc1ca
HV		 1529 ret = v4l2_querymenu(vfd->ctrl_handler, p);
1530 else if (ops->vidioc_querymenu)
1531 ret = ops->vidioc_querymenu(file, fh, p);
1532 else
35ea11ff 1533 break;
35ea11ff
HV		 1534 if (!ret)
1535 dbgarg(cmd, "id=0x%x, index=%d, name=%s\n",
1536 p->id, p->index, p->name);
1537 else
1538 dbgarg(cmd, "id=0x%x, index=%d\n",
1539 p->id, p->index);
1540 break;
1541 }
35ea11ff
HV		 1542 case VIDIOC_G_CROP:
1543 {
1544 struct v4l2_crop *p = arg;
1545
35ea11ff 1546 dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
992efeff
TS		 1547
1548 if (ops->vidioc_g_crop) {
1549 ret = ops->vidioc_g_crop(file, fh, p);
1550 } else {
1551 /* simulate capture crop using selection api */
1552 struct v4l2_selection s = {
1553 .type = p->type,
1554 };
1555
1556 /* crop means compose for output devices */
1557 if (V4L2_TYPE_IS_OUTPUT(p->type))
1558 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
1559 else
1560 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
1561
1562 ret = ops->vidioc_g_selection(file, fh, &s);
1563
1564 /* copying results to old structure on success */
1565 if (!ret)
1566 p->c = s.r;
1567 }
1568
35ea11ff
HV		 1569 if (!ret)
1570 dbgrect(vfd, "", &p->c);
1571 break;
1572 }
1573 case VIDIOC_S_CROP:
1574 {
1575 struct v4l2_crop *p = arg;
1576
35ea11ff
HV		 1577 dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
1578 dbgrect(vfd, "", &p->c);
992efeff
TS		 1579
1580 if (ops->vidioc_s_crop) {
1581 ret = ops->vidioc_s_crop(file, fh, p);
1582 } else {
1583 /* simulate capture crop using selection api */
1584 struct v4l2_selection s = {
1585 .type = p->type,
1586 .r = p->c,
1587 };
1588
1589 /* crop means compose for output devices */
1590 if (V4L2_TYPE_IS_OUTPUT(p->type))
1591 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
1592 else
1593 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
1594
1595 ret = ops->vidioc_s_selection(file, fh, &s);
1596 }
35ea11ff
HV		 1597 break;
1598 }
0e8caace
TS		 1599 case VIDIOC_G_SELECTION:
1600 {
1601 struct v4l2_selection *p = arg;
1602
0e8caace
TS		 1603 dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
1604
1605 ret = ops->vidioc_g_selection(file, fh, p);
1606 if (!ret)
1607 dbgrect(vfd, "", &p->r);
1608 break;
1609 }
1610 case VIDIOC_S_SELECTION:
1611 {
1612 struct v4l2_selection *p = arg;
1613
0e8caace
TS		 1614
1615 dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
1616 dbgrect(vfd, "", &p->r);
1617
1618 ret = ops->vidioc_s_selection(file, fh, p);
1619 break;
1620 }
35ea11ff
HV		 1621 case VIDIOC_CROPCAP:
1622 {
1623 struct v4l2_cropcap *p = arg;
1624
1625 /*FIXME: Should also show v4l2_fract pixelaspect */
35ea11ff 1626 dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
992efeff
TS		 1627 if (ops->vidioc_cropcap) {
1628 ret = ops->vidioc_cropcap(file, fh, p);
1629 } else {
1630 struct v4l2_selection s = { .type = p->type };
1631
1632 /* obtaining bounds */
1633 if (V4L2_TYPE_IS_OUTPUT(p->type))
1634 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
1635 else
1636 s.target = V4L2_SEL_TGT_CROP_BOUNDS;
1637
1638 ret = ops->vidioc_g_selection(file, fh, &s);
1639 if (ret)
1640 break;
1641 p->bounds = s.r;
1642
1643 /* obtaining defrect */
1644 if (V4L2_TYPE_IS_OUTPUT(p->type))
1645 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
1646 else
1647 s.target = V4L2_SEL_TGT_CROP_DEFAULT;
1648
1649 ret = ops->vidioc_g_selection(file, fh, &s);
1650 if (ret)
1651 break;
1652 p->defrect = s.r;
1653
1654 /* setting trivial pixelaspect */
1655 p->pixelaspect.numerator = 1;
1656 p->pixelaspect.denominator = 1;
1657 }
1658
35ea11ff
HV		 1659 if (!ret) {
1660 dbgrect(vfd, "bounds ", &p->bounds);
1661 dbgrect(vfd, "defrect ", &p->defrect);
1662 }
1663 break;
1664 }
1665 case VIDIOC_G_JPEGCOMP:
1666 {
1667 struct v4l2_jpegcompression *p = arg;
1668
a399810c 1669 ret = ops->vidioc_g_jpegcomp(file, fh, p);
35ea11ff
HV		 1670 if (!ret)
1671 dbgarg(cmd, "quality=%d, APPn=%d, "
1672 "APP_len=%d, COM_len=%d, "
1673 "jpeg_markers=%d\n",
1674 p->quality, p->APPn, p->APP_len,
1675 p->COM_len, p->jpeg_markers);
1676 break;
1677 }
1678 case VIDIOC_S_JPEGCOMP:
1679 {
1680 struct v4l2_jpegcompression *p = arg;
1681
35ea11ff
HV		 1682 dbgarg(cmd, "quality=%d, APPn=%d, APP_len=%d, "
1683 "COM_len=%d, jpeg_markers=%d\n",
1684 p->quality, p->APPn, p->APP_len,
1685 p->COM_len, p->jpeg_markers);
93d5a30b 1686 ret = ops->vidioc_s_jpegcomp(file, fh, p);
35ea11ff
HV		 1687 break;
1688 }
1689 case VIDIOC_G_ENC_INDEX:
1690 {
1691 struct v4l2_enc_idx *p = arg;
1692
a399810c 1693 ret = ops->vidioc_g_enc_index(file, fh, p);
35ea11ff
HV		 1694 if (!ret)
1695 dbgarg(cmd, "entries=%d, entries_cap=%d\n",
1696 p->entries, p->entries_cap);
1697 break;
1698 }
1699 case VIDIOC_ENCODER_CMD:
1700 {
1701 struct v4l2_encoder_cmd *p = arg;
1702
a399810c 1703 ret = ops->vidioc_encoder_cmd(file, fh, p);
35ea11ff
HV		 1704 if (!ret)
1705 dbgarg(cmd, "cmd=%d, flags=%x\n", p->cmd, p->flags);
1706 break;
1707 }
1708 case VIDIOC_TRY_ENCODER_CMD:
1709 {
1710 struct v4l2_encoder_cmd *p = arg;
1711
a399810c 1712 ret = ops->vidioc_try_encoder_cmd(file, fh, p);
35ea11ff
HV		 1713 if (!ret)
1714 dbgarg(cmd, "cmd=%d, flags=%x\n", p->cmd, p->flags);
1715 break;
1716 }
a45c0ad5
HV		 1717 case VIDIOC_DECODER_CMD:
1718 {
1719 struct v4l2_decoder_cmd *p = arg;
1720
a45c0ad5
HV		 1721 ret = ops->vidioc_decoder_cmd(file, fh, p);
1722 if (!ret)
1723 dbgarg(cmd, "cmd=%d, flags=%x\n", p->cmd, p->flags);
1724 break;
1725 }
1726 case VIDIOC_TRY_DECODER_CMD:
1727 {
1728 struct v4l2_decoder_cmd *p = arg;
1729
a45c0ad5
HV		 1730 ret = ops->vidioc_try_decoder_cmd(file, fh, p);
1731 if (!ret)
1732 dbgarg(cmd, "cmd=%d, flags=%x\n", p->cmd, p->flags);
1733 break;
1734 }
35ea11ff
HV		 1735 case VIDIOC_G_PARM:
1736 {
1737 struct v4l2_streamparm *p = arg;
35ea11ff 1738
a399810c 1739 if (ops->vidioc_g_parm) {
34796bc0
TP		 1740 ret = check_fmt(ops, p->type);
1741 if (ret)
1742 break;
a399810c 1743 ret = ops->vidioc_g_parm(file, fh, p);
35ea11ff 1744 } else {
9bedc7f7
HV		 1745 v4l2_std_id std = vfd->current_norm;
1746
93d5a30b 1747 ret = -EINVAL;
35ea11ff 1748 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
3f5e1824 1749 break;
35ea11ff 1750
35ea11ff 1751 ret = 0;
0c142c86 1752 p->parm.capture.readbuffers = 2;
9bedc7f7
HV		 1753 if (ops->vidioc_g_std)
1754 ret = ops->vidioc_g_std(file, fh, &std);
9bedc7f7
HV		 1755 if (ret == 0)
1756 v4l2_video_std_frame_period(std,
1757 &p->parm.capture.timeperframe);
35ea11ff
HV		 1758 }
1759
1760 dbgarg(cmd, "type=%d\n", p->type);
1761 break;
1762 }
1763 case VIDIOC_S_PARM:
1764 {
1765 struct v4l2_streamparm *p = arg;
1766
34796bc0
TP		 1767 ret = check_fmt(ops, p->type);
1768 if (ret)
1769 break;
1770
35ea11ff 1771 dbgarg(cmd, "type=%d\n", p->type);
a399810c 1772 ret = ops->vidioc_s_parm(file, fh, p);
35ea11ff
HV		 1773 break;
1774 }
35ea11ff
HV		 1775 case VIDIOC_G_SLICED_VBI_CAP:
1776 {
1777 struct v4l2_sliced_vbi_cap *p = arg;
35ea11ff 1778
19c96e4b
TP		 1779 /* Clear up to type, everything after type is zerod already */
1780 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
1781
35ea11ff 1782 dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
a399810c 1783 ret = ops->vidioc_g_sliced_vbi_cap(file, fh, p);
35ea11ff
HV		 1784 if (!ret)
1785 dbgarg2("service_set=%d\n", p->service_set);
1786 break;
1787 }
1788 case VIDIOC_LOG_STATUS:
1789 {
e2ecb257
HV		 1790 if (vfd->v4l2_dev)
1791 pr_info("%s: ================= START STATUS =================\n",
1792 vfd->v4l2_dev->name);
a399810c 1793 ret = ops->vidioc_log_status(file, fh);
e2ecb257
HV		 1794 if (vfd->v4l2_dev)
1795 pr_info("%s: ================== END STATUS ==================\n",
1796 vfd->v4l2_dev->name);
35ea11ff
HV		 1797 break;
1798 }
35ea11ff
HV		 1799 case VIDIOC_DBG_G_REGISTER:
1800 {
8ab75e3e 1801#ifdef CONFIG_VIDEO_ADV_DEBUG
aecde8b5 1802 struct v4l2_dbg_register *p = arg;
35ea11ff 1803
48ea0be0
HV		 1804 if (!capable(CAP_SYS_ADMIN))
1805 ret = -EPERM;
1806 else
1807 ret = ops->vidioc_g_register(file, fh, p);
8ab75e3e 1808#endif
35ea11ff
HV		 1809 break;
1810 }
1811 case VIDIOC_DBG_S_REGISTER:
1812 {
8ab75e3e 1813#ifdef CONFIG_VIDEO_ADV_DEBUG
aecde8b5 1814 struct v4l2_dbg_register *p = arg;
35ea11ff 1815
48ea0be0
HV		 1816 if (!capable(CAP_SYS_ADMIN))
1817 ret = -EPERM;
1818 else
1819 ret = ops->vidioc_s_register(file, fh, p);
8ab75e3e 1820#endif
35ea11ff
HV		 1821 break;
1822 }
aecde8b5 1823 case VIDIOC_DBG_G_CHIP_IDENT:
35ea11ff 1824 {
aecde8b5 1825 struct v4l2_dbg_chip_ident *p = arg;
35ea11ff 1826
80b36e0f
HV		 1827 p->ident = V4L2_IDENT_NONE;
1828 p->revision = 0;
a399810c 1829 ret = ops->vidioc_g_chip_ident(file, fh, p);
35ea11ff
HV		 1830 if (!ret)
1831 dbgarg(cmd, "chip_ident=%u, revision=0x%x\n", p->ident, p->revision);
1832 break;
1833 }
74d83fa0
MCC		 1834 case VIDIOC_ENUM_FRAMESIZES:
1835 {
1836 struct v4l2_frmsizeenum *p = arg;
1837
74d83fa0
MCC		 1838 ret = ops->vidioc_enum_framesizes(file, fh, p);
1839 dbgarg(cmd,
d1afe425
MCC		 1840 "index=%d, pixelformat=%c%c%c%c, type=%d ",
1841 p->index,
1842 (p->pixel_format & 0xff),
1843 (p->pixel_format >> 8) & 0xff,
1844 (p->pixel_format >> 16) & 0xff,
1845 (p->pixel_format >> 24) & 0xff,
1846 p->type);
74d83fa0
MCC		 1847 switch (p->type) {
1848 case V4L2_FRMSIZE_TYPE_DISCRETE:
d33fbcbb 1849 dbgarg3("width = %d, height=%d\n",
74d83fa0
MCC		 1850 p->discrete.width, p->discrete.height);
1851 break;
1852 case V4L2_FRMSIZE_TYPE_STEPWISE:
d33fbcbb 1853 dbgarg3("min %dx%d, max %dx%d, step %dx%d\n",
74d83fa0
MCC		 1854 p->stepwise.min_width, p->stepwise.min_height,
1855 p->stepwise.step_width, p->stepwise.step_height,
1856 p->stepwise.max_width, p->stepwise.max_height);
1857 break;
1858 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
d33fbcbb 1859 dbgarg3("continuous\n");
74d83fa0
MCC		 1860 break;
1861 default:
d33fbcbb 1862 dbgarg3("- Unknown type!\n");
74d83fa0
MCC		 1863 }
1864
1865 break;
1866 }
1867 case VIDIOC_ENUM_FRAMEINTERVALS:
1868 {
1869 struct v4l2_frmivalenum *p = arg;
1870
74d83fa0
MCC		 1871 ret = ops->vidioc_enum_frameintervals(file, fh, p);
1872 dbgarg(cmd,
1873 "index=%d, pixelformat=%d, width=%d, height=%d, type=%d ",
1874 p->index, p->pixel_format,
1875 p->width, p->height, p->type);
1876 switch (p->type) {
1877 case V4L2_FRMIVAL_TYPE_DISCRETE:
1878 dbgarg2("fps=%d/%d\n",
1879 p->discrete.numerator,
1880 p->discrete.denominator);
1881 break;
1882 case V4L2_FRMIVAL_TYPE_STEPWISE:
1958578d
MCC		 1883 dbgarg2("min=%d/%d, max=%d/%d, step=%d/%d\n",
1884 p->stepwise.min.numerator,
1885 p->stepwise.min.denominator,
1886 p->stepwise.max.numerator,
1887 p->stepwise.max.denominator,
1888 p->stepwise.step.numerator,
1889 p->stepwise.step.denominator);
74d83fa0
MCC		 1890 break;
1891 case V4L2_FRMIVAL_TYPE_CONTINUOUS:
1892 dbgarg2("continuous\n");
1893 break;
1894 default:
1895 dbgarg2("- Unknown type!\n");
1896 }
1897 break;
1898 }
b6456c0c
MK		 1899 case VIDIOC_ENUM_DV_PRESETS:
1900 {
1901 struct v4l2_dv_enum_preset *p = arg;
1902
b6456c0c
MK		 1903 ret = ops->vidioc_enum_dv_presets(file, fh, p);
1904 if (!ret)
1905 dbgarg(cmd,
1906 "index=%d, preset=%d, name=%s, width=%d,"
1907 " height=%d ",
1908 p->index, p->preset, p->name, p->width,
1909 p->height);
1910 break;
1911 }
1912 case VIDIOC_S_DV_PRESET:
1913 {
1914 struct v4l2_dv_preset *p = arg;
1915
b6456c0c
MK		 1916 dbgarg(cmd, "preset=%d\n", p->preset);
1917 ret = ops->vidioc_s_dv_preset(file, fh, p);
1918 break;
1919 }
1920 case VIDIOC_G_DV_PRESET:
1921 {
1922 struct v4l2_dv_preset *p = arg;
1923
b6456c0c
MK		 1924 ret = ops->vidioc_g_dv_preset(file, fh, p);
1925 if (!ret)
1926 dbgarg(cmd, "preset=%d\n", p->preset);
1927 break;
1928 }
1929 case VIDIOC_QUERY_DV_PRESET:
1930 {
1931 struct v4l2_dv_preset *p = arg;
1932
b6456c0c
MK		 1933 ret = ops->vidioc_query_dv_preset(file, fh, p);
1934 if (!ret)
1935 dbgarg(cmd, "preset=%d\n", p->preset);
1936 break;
1937 }
1938 case VIDIOC_S_DV_TIMINGS:
1939 {
1940 struct v4l2_dv_timings *p = arg;
1941
5d7758ee 1942 dbgtimings(vfd, p);
b6456c0c
MK		 1943 switch (p->type) {
1944 case V4L2_DV_BT_656_1120:
b6456c0c
MK		 1945 ret = ops->vidioc_s_dv_timings(file, fh, p);
1946 break;
1947 default:
5d7758ee 1948 ret = -EINVAL;
b6456c0c
MK		 1949 break;
1950 }
1951 break;
1952 }
1953 case VIDIOC_G_DV_TIMINGS:
1954 {
1955 struct v4l2_dv_timings *p = arg;
1956
b6456c0c 1957 ret = ops->vidioc_g_dv_timings(file, fh, p);
5d7758ee
HV		 1958 if (!ret)
1959 dbgtimings(vfd, p);
1960 break;
1961 }
1962 case VIDIOC_ENUM_DV_TIMINGS:
1963 {
1964 struct v4l2_enum_dv_timings *p = arg;
1965
1966 if (!ops->vidioc_enum_dv_timings)
1967 break;
1968
1969 ret = ops->vidioc_enum_dv_timings(file, fh, p);
b6456c0c 1970 if (!ret) {
5d7758ee
HV		 1971 dbgarg(cmd, "index=%d: ", p->index);
1972 dbgtimings(vfd, &p->timings);
1973 }
1974 break;
1975 }
1976 case VIDIOC_QUERY_DV_TIMINGS:
1977 {
1978 struct v4l2_dv_timings *p = arg;
1979
1980 if (!ops->vidioc_query_dv_timings)
1981 break;
1982
1983 ret = ops->vidioc_query_dv_timings(file, fh, p);
1984 if (!ret)
1985 dbgtimings(vfd, p);
1986 break;
1987 }
1988 case VIDIOC_DV_TIMINGS_CAP:
1989 {
1990 struct v4l2_dv_timings_cap *p = arg;
1991
1992 if (!ops->vidioc_dv_timings_cap)
1993 break;
1994
1995 ret = ops->vidioc_dv_timings_cap(file, fh, p);
1996 if (ret)
1997 break;
1998 switch (p->type) {
1999 case V4L2_DV_BT_656_1120:
2000 dbgarg(cmd,
2001 "type=%d, width=%u-%u, height=%u-%u, "
2002 "pixelclock=%llu-%llu, standards=%x, capabilities=%x ",
2003 p->type,
2004 p->bt.min_width, p->bt.max_width,
2005 p->bt.min_height, p->bt.max_height,
2006 p->bt.min_pixelclock, p->bt.max_pixelclock,
2007 p->bt.standards, p->bt.capabilities);
2008 break;
2009 default:
2010 dbgarg(cmd, "unknown type ");
2011 break;
b6456c0c
MK		 2012 }
2013 break;
2014 }
d3d7c963
SA		 2015 case VIDIOC_DQEVENT:
2016 {
2017 struct v4l2_event *ev = arg;
2018
d3d7c963
SA		 2019 ret = v4l2_event_dequeue(fh, ev, file->f_flags & O_NONBLOCK);
2020 if (ret < 0) {
2021 dbgarg(cmd, "no pending events?");
2022 break;
2023 }
2024 dbgarg(cmd,
2025 "pending=%d, type=0x%8.8x, sequence=%d, "
2026 "timestamp=%lu.%9.9lu ",
2027 ev->pending, ev->type, ev->sequence,
2028 ev->timestamp.tv_sec, ev->timestamp.tv_nsec);
2029 break;
2030 }
2031 case VIDIOC_SUBSCRIBE_EVENT:
2032 {
2033 struct v4l2_event_subscription *sub = arg;
2034
d3d7c963
SA		 2035 ret = ops->vidioc_subscribe_event(fh, sub);
2036 if (ret < 0) {
2037 dbgarg(cmd, "failed, ret=%ld", ret);
2038 break;
2039 }
2040 dbgarg(cmd, "type=0x%8.8x", sub->type);
2041 break;
2042 }
2043 case VIDIOC_UNSUBSCRIBE_EVENT:
2044 {
2045 struct v4l2_event_subscription *sub = arg;
2046
d3d7c963
SA		 2047 ret = ops->vidioc_unsubscribe_event(fh, sub);
2048 if (ret < 0) {
2049 dbgarg(cmd, "failed, ret=%ld", ret);
2050 break;
2051 }
2052 dbgarg(cmd, "type=0x%8.8x", sub->type);
2053 break;
2054 }
2150158b
GL		 2055 case VIDIOC_CREATE_BUFS:
2056 {
2057 struct v4l2_create_buffers *create = arg;
2058
2150158b
GL		 2059 ret = check_fmt(ops, create->format.type);
2060 if (ret)
2061 break;
2062
2063 ret = ops->vidioc_create_bufs(file, fh, create);
2064
2065 dbgarg(cmd, "count=%d @ %d\n", create->count, create->index);
2066 break;
2067 }
2068 case VIDIOC_PREPARE_BUF:
2069 {
2070 struct v4l2_buffer *b = arg;
2071
2150158b
GL		 2072 ret = check_fmt(ops, b->type);
2073 if (ret)
2074 break;
2075
2076 ret = ops->vidioc_prepare_buf(file, fh, b);
2077
2078 dbgarg(cmd, "index=%d", b->index);
2079 break;
2080 }
a399810c 2081 default:
a399810c
HV		 2082 if (!ops->vidioc_default)
2083 break;
4b902fec
HV		 2084 ret = ops->vidioc_default(file, fh, use_fh_prio ?
2085 v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
2086 cmd, arg);
35ea11ff 2087 break;
35ea11ff
HV		 2088 } /* switch */
2089
86748f35
HV		 2090done:
2091 if (vfd->debug) {
2092 if (write_only && vfd->debug > V4L2_DEBUG_IOCTL) {
2093 if (ret < 0)
2094 printk(KERN_DEBUG "%s: error %ld\n",
2095 video_device_node_name(vfd), ret);
2096 return ret;
2097 }
2098 v4l_print_ioctl(vfd->name, cmd);
2099 if (ret < 0)
2100 pr_cont(": error %ld\n", ret);
2101 else if (vfd->debug == V4L2_DEBUG_IOCTL)
2102 pr_cont("\n");
2103 else if (!info->debug)
2104 return ret;
2105 else if (_IOC_DIR(cmd) == _IOC_NONE)
2106 info->debug(arg, write_only);
2107 else {
2108 pr_cont(": ");
2109 info->debug(arg, write_only);
35ea11ff
HV		 2110 }
2111 }
2112
2113 return ret;
2114}
2115
d14e6d76
PO		 2116static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
2117 void * __user *user_ptr, void ***kernel_ptr)
2118{
2119 int ret = 0;
2120
2121 switch (cmd) {
2122 case VIDIOC_QUERYBUF:
2123 case VIDIOC_QBUF:
2124 case VIDIOC_DQBUF: {
2125 struct v4l2_buffer *buf = parg;
2126
2127 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
2128 if (buf->length > VIDEO_MAX_PLANES) {
2129 ret = -EINVAL;
2130 break;
2131 }
2132 *user_ptr = (void __user *)buf->m.planes;
2ef40370 2133 *kernel_ptr = (void *)&buf->m.planes;
d14e6d76
PO		 2134 *array_size = sizeof(struct v4l2_plane) * buf->length;
2135 ret = 1;
2136 }
2137 break;
2138 }
2139
2140 case VIDIOC_S_EXT_CTRLS:
2141 case VIDIOC_G_EXT_CTRLS:
2142 case VIDIOC_TRY_EXT_CTRLS: {
2143 struct v4l2_ext_controls *ctrls = parg;
2144
2145 if (ctrls->count != 0) {
6c06108b
DC		 2146 if (ctrls->count > V4L2_CID_MAX_CTRLS) {
2147 ret = -EINVAL;
2148 break;
2149 }
d14e6d76 2150 *user_ptr = (void __user *)ctrls->controls;
2ef40370 2151 *kernel_ptr = (void *)&ctrls->controls;
d14e6d76
PO		 2152 *array_size = sizeof(struct v4l2_ext_control)
2153 * ctrls->count;
2154 ret = 1;
2155 }
2156 break;
2157 }
2158 }
2159
2160 return ret;
2161}
2162
fc0a8079
LP		 2163long
2164video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
2165 v4l2_kioctl func)
35ea11ff
HV		 2166{
2167 char sbuf[128];
2168 void *mbuf = NULL;
1d94aa36 2169 void *parg = (void *)arg;
069b7479 2170 long err = -EINVAL;
d14e6d76
PO		 2171 bool has_array_args;
2172 size_t array_size = 0;
35ea11ff 2173 void __user *user_ptr = NULL;
d14e6d76 2174 void **kernel_ptr = NULL;
35ea11ff 2175
35ea11ff 2176 /* Copy arguments into temp kernel buffer */
337f9d20 2177 if (_IOC_DIR(cmd) != _IOC_NONE) {
35ea11ff
HV		 2178 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
2179 parg = sbuf;
2180 } else {
2181 /* too big to allocate from stack */
2182 mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
2183 if (NULL == mbuf)
2184 return -ENOMEM;
2185 parg = mbuf;
2186 }
2187
2188 err = -EFAULT;
19c96e4b 2189 if (_IOC_DIR(cmd) & _IOC_WRITE) {
27cd2aba
HV		 2190 unsigned int n = _IOC_SIZE(cmd);
2191
2192 /*
2193 * In some cases, only a few fields are used as input,
2194 * i.e. when the app sets "index" and then the driver
2195 * fills in the rest of the structure for the thing
2196 * with that index. We only need to copy up the first
2197 * non-input field.
2198 */
2199 if (v4l2_is_known_ioctl(cmd)) {
2200 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags;
2201 if (flags & INFO_FL_CLEAR_MASK)
2202 n = (flags & INFO_FL_CLEAR_MASK) >> 16;
2203 }
19c96e4b
TP		 2204
2205 if (copy_from_user(parg, (void __user *)arg, n))
35ea11ff 2206 goto out;
19c96e4b
TP		 2207
2208 /* zero out anything we don't copy from userspace */
2209 if (n < _IOC_SIZE(cmd))
2210 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n);
337f9d20
TP		 2211 } else {
2212 /* read-only ioctl */
2213 memset(parg, 0, _IOC_SIZE(cmd));
19c96e4b 2214 }
35ea11ff
HV		 2215 }
2216
d14e6d76
PO		 2217 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
2218 if (err < 0)
2219 goto out;
2220 has_array_args = err;
35ea11ff 2221
d14e6d76
PO		 2222 if (has_array_args) {
2223 /*
2224 * When adding new types of array args, make sure that the
2225 * parent argument to ioctl (which contains the pointer to the
2226 * array) fits into sbuf (so that mbuf will still remain
2227 * unused up to here).
2228 */
2229 mbuf = kmalloc(array_size, GFP_KERNEL);
2230 err = -ENOMEM;
2231 if (NULL == mbuf)
2232 goto out_array_args;
2233 err = -EFAULT;
2234 if (copy_from_user(mbuf, user_ptr, array_size))
2235 goto out_array_args;
2236 *kernel_ptr = mbuf;
35ea11ff
HV		 2237 }
2238
2239 /* Handles IOCTL */
fc0a8079 2240 err = func(file, cmd, parg);
35ea11ff 2241 if (err == -ENOIOCTLCMD)
02bbb814 2242 err = -ENOTTY;
35ea11ff 2243
d14e6d76
PO		 2244 if (has_array_args) {
2245 *kernel_ptr = user_ptr;
2246 if (copy_to_user(user_ptr, mbuf, array_size))
35ea11ff 2247 err = -EFAULT;
d14e6d76 2248 goto out_array_args;
35ea11ff 2249 }
5d7758ee
HV		 2250 /* VIDIOC_QUERY_DV_TIMINGS can return an error, but still have valid
2251 results that must be returned. */
2252 if (err < 0 && cmd != VIDIOC_QUERY_DV_TIMINGS)
35ea11ff
HV		 2253 goto out;
2254
d14e6d76 2255out_array_args:
35ea11ff
HV		 2256 /* Copy results into user buffer */
2257 switch (_IOC_DIR(cmd)) {
2258 case _IOC_READ:
2259 case (_IOC_WRITE | _IOC_READ):
2260 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
2261 err = -EFAULT;
2262 break;
2263 }
2264
2265out:
2266 kfree(mbuf);
2267 return err;
2268}
fc0a8079
LP		 2269EXPORT_SYMBOL(video_usercopy);
2270
2271long video_ioctl2(struct file *file,
2272 unsigned int cmd, unsigned long arg)
2273{
2274 return video_usercopy(file, cmd, arg, __video_do_ioctl);
2275}
8a522c91 2276EXPORT_SYMBOL(video_ioctl2);
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