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[media] v4l2: rename VIDIOC_DBG_G_CHIP_NAME to _CHIP_INFO
[deliverable/linux.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
73f35418
HV		 38#define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls)
39
35ea11ff
HV		 40struct std_descr {
41 v4l2_std_id std;
42 const char *descr;
43};
44
45static const struct std_descr standards[] = {
46 { V4L2_STD_NTSC, "NTSC" },
47 { V4L2_STD_NTSC_M, "NTSC-M" },
48 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" },
49 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" },
50 { V4L2_STD_NTSC_443, "NTSC-443" },
51 { V4L2_STD_PAL, "PAL" },
52 { V4L2_STD_PAL_BG, "PAL-BG" },
53 { V4L2_STD_PAL_B, "PAL-B" },
54 { V4L2_STD_PAL_B1, "PAL-B1" },
55 { V4L2_STD_PAL_G, "PAL-G" },
56 { V4L2_STD_PAL_H, "PAL-H" },
57 { V4L2_STD_PAL_I, "PAL-I" },
58 { V4L2_STD_PAL_DK, "PAL-DK" },
59 { V4L2_STD_PAL_D, "PAL-D" },
60 { V4L2_STD_PAL_D1, "PAL-D1" },
61 { V4L2_STD_PAL_K, "PAL-K" },
62 { V4L2_STD_PAL_M, "PAL-M" },
63 { V4L2_STD_PAL_N, "PAL-N" },
64 { V4L2_STD_PAL_Nc, "PAL-Nc" },
65 { V4L2_STD_PAL_60, "PAL-60" },
66 { V4L2_STD_SECAM, "SECAM" },
67 { V4L2_STD_SECAM_B, "SECAM-B" },
68 { V4L2_STD_SECAM_G, "SECAM-G" },
69 { V4L2_STD_SECAM_H, "SECAM-H" },
70 { V4L2_STD_SECAM_DK, "SECAM-DK" },
71 { V4L2_STD_SECAM_D, "SECAM-D" },
72 { V4L2_STD_SECAM_K, "SECAM-K" },
73 { V4L2_STD_SECAM_K1, "SECAM-K1" },
74 { V4L2_STD_SECAM_L, "SECAM-L" },
75 { V4L2_STD_SECAM_LC, "SECAM-Lc" },
76 { 0, "Unknown" }
77};
78
79/* video4linux standard ID conversion to standard name
80 */
81const char *v4l2_norm_to_name(v4l2_std_id id)
82{
83 u32 myid = id;
84 int i;
85
86 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
87 64 bit comparations. So, on that architecture, with some gcc
88 variants, compilation fails. Currently, the max value is 30bit wide.
89 */
90 BUG_ON(myid != id);
91
92 for (i = 0; standards[i].std; i++)
93 if (myid == standards[i].std)
94 break;
95 return standards[i].descr;
96}
97EXPORT_SYMBOL(v4l2_norm_to_name);
98
51f0b8d5
TP		 99/* Returns frame period for the given standard */
100void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod)
101{
102 if (id & V4L2_STD_525_60) {
103 frameperiod->numerator = 1001;
104 frameperiod->denominator = 30000;
105 } else {
106 frameperiod->numerator = 1;
107 frameperiod->denominator = 25;
108 }
109}
110EXPORT_SYMBOL(v4l2_video_std_frame_period);
111
35ea11ff
HV		 112/* Fill in the fields of a v4l2_standard structure according to the
113 'id' and 'transmission' parameters. Returns negative on error. */
114int v4l2_video_std_construct(struct v4l2_standard *vs,
115 int id, const char *name)
116{
51f0b8d5
TP		 117 vs->id = id;
118 v4l2_video_std_frame_period(id, &vs->frameperiod);
119 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625;
35ea11ff
HV		 120 strlcpy(vs->name, name, sizeof(vs->name));
121 return 0;
122}
123EXPORT_SYMBOL(v4l2_video_std_construct);
124
125/* ----------------------------------------------------------------- */
126/* some arrays for pretty-printing debug messages of enum types */
127
128const char *v4l2_field_names[] = {
129 [V4L2_FIELD_ANY] = "any",
130 [V4L2_FIELD_NONE] = "none",
131 [V4L2_FIELD_TOP] = "top",
132 [V4L2_FIELD_BOTTOM] = "bottom",
133 [V4L2_FIELD_INTERLACED] = "interlaced",
134 [V4L2_FIELD_SEQ_TB] = "seq-tb",
135 [V4L2_FIELD_SEQ_BT] = "seq-bt",
136 [V4L2_FIELD_ALTERNATE] = "alternate",
137 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",
138 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",
139};
140EXPORT_SYMBOL(v4l2_field_names);
141
142const char *v4l2_type_names[] = {
143 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap",
144 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay",
145 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out",
146 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap",
147 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out",
148 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",
149 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out",
150 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay",
f8f3914c
PO		 151 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane",
152 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane",
35ea11ff
HV		 153};
154EXPORT_SYMBOL(v4l2_type_names);
155
156static const char *v4l2_memory_names[] = {
157 [V4L2_MEMORY_MMAP] = "mmap",
158 [V4L2_MEMORY_USERPTR] = "userptr",
159 [V4L2_MEMORY_OVERLAY] = "overlay",
051c7788 160 [V4L2_MEMORY_DMABUF] = "dmabuf",
35ea11ff
HV		 161};
162
d9246240 163#define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown")
35ea11ff
HV		 164
165/* ------------------------------------------------------------------ */
166/* debug help functions */
8ab75e3e 167
59076122
HV		 168static void v4l_print_querycap(const void *arg, bool write_only)
169{
170 const struct v4l2_capability *p = arg;
171
27d5a87c 172 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, "
59076122 173 "capabilities=0x%08x, device_caps=0x%08x\n",
27d5a87c
HV		 174 (int)sizeof(p->driver), p->driver,
175 (int)sizeof(p->card), p->card,
176 (int)sizeof(p->bus_info), p->bus_info,
59076122
HV		 177 p->version, p->capabilities, p->device_caps);
178}
179
180static void v4l_print_enuminput(const void *arg, bool write_only)
181{
182 const struct v4l2_input *p = arg;
183
27d5a87c 184 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, "
59076122 185 "std=0x%08Lx, status=0x%x, capabilities=0x%x\n",
27d5a87c
HV		 186 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
187 p->tuner, (unsigned long long)p->std, p->status,
188 p->capabilities);
59076122
HV		 189}
190
191static void v4l_print_enumoutput(const void *arg, bool write_only)
192{
193 const struct v4l2_output *p = arg;
194
27d5a87c 195 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, "
59076122 196 "modulator=%u, std=0x%08Lx, capabilities=0x%x\n",
27d5a87c
HV		 197 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
198 p->modulator, (unsigned long long)p->std, p->capabilities);
59076122
HV		 199}
200
201static void v4l_print_audio(const void *arg, bool write_only)
202{
203 const struct v4l2_audio *p = arg;
204
205 if (write_only)
206 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode);
207 else
27d5a87c
HV		 208 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
209 p->index, (int)sizeof(p->name), p->name,
210 p->capability, p->mode);
59076122
HV		 211}
212
213static void v4l_print_audioout(const void *arg, bool write_only)
214{
215 const struct v4l2_audioout *p = arg;
216
217 if (write_only)
218 pr_cont("index=%u\n", p->index);
219 else
27d5a87c
HV		 220 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
221 p->index, (int)sizeof(p->name), p->name,
222 p->capability, p->mode);
59076122
HV		 223}
224
be6c64e4
HV		 225static void v4l_print_fmtdesc(const void *arg, bool write_only)
226{
227 const struct v4l2_fmtdesc *p = arg;
228
27d5a87c 229 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%c%c%c%c, description='%.*s'\n",
be6c64e4
HV		 230 p->index, prt_names(p->type, v4l2_type_names),
231 p->flags, (p->pixelformat & 0xff),
232 (p->pixelformat >> 8) & 0xff,
233 (p->pixelformat >> 16) & 0xff,
234 (p->pixelformat >> 24) & 0xff,
27d5a87c 235 (int)sizeof(p->description), p->description);
be6c64e4
HV		 236}
237
238static void v4l_print_format(const void *arg, bool write_only)
239{
240 const struct v4l2_format *p = arg;
241 const struct v4l2_pix_format *pix;
242 const struct v4l2_pix_format_mplane *mp;
243 const struct v4l2_vbi_format *vbi;
244 const struct v4l2_sliced_vbi_format *sliced;
245 const struct v4l2_window *win;
246 const struct v4l2_clip *clip;
247 unsigned i;
248
249 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
250 switch (p->type) {
251 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
252 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
253 pix = &p->fmt.pix;
254 pr_cont(", width=%u, height=%u, "
255 "pixelformat=%c%c%c%c, field=%s, "
256 "bytesperline=%u sizeimage=%u, colorspace=%d\n",
257 pix->width, pix->height,
258 (pix->pixelformat & 0xff),
259 (pix->pixelformat >> 8) & 0xff,
260 (pix->pixelformat >> 16) & 0xff,
261 (pix->pixelformat >> 24) & 0xff,
262 prt_names(pix->field, v4l2_field_names),
263 pix->bytesperline, pix->sizeimage,
264 pix->colorspace);
265 break;
266 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
267 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
268 mp = &p->fmt.pix_mp;
269 pr_cont(", width=%u, height=%u, "
270 "format=%c%c%c%c, field=%s, "
271 "colorspace=%d, num_planes=%u\n",
272 mp->width, mp->height,
273 (mp->pixelformat & 0xff),
274 (mp->pixelformat >> 8) & 0xff,
275 (mp->pixelformat >> 16) & 0xff,
276 (mp->pixelformat >> 24) & 0xff,
277 prt_names(mp->field, v4l2_field_names),
278 mp->colorspace, mp->num_planes);
279 for (i = 0; i < mp->num_planes; i++)
280 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i,
281 mp->plane_fmt[i].bytesperline,
282 mp->plane_fmt[i].sizeimage);
283 break;
284 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
285 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
286 win = &p->fmt.win;
287 pr_cont(", wxh=%dx%d, x,y=%d,%d, field=%s, "
288 "chromakey=0x%08x, bitmap=%p, "
289 "global_alpha=0x%02x\n",
290 win->w.width, win->w.height,
291 win->w.left, win->w.top,
292 prt_names(win->field, v4l2_field_names),
293 win->chromakey, win->bitmap, win->global_alpha);
294 clip = win->clips;
295 for (i = 0; i < win->clipcount; i++) {
296 printk(KERN_DEBUG "clip %u: wxh=%dx%d, x,y=%d,%d\n",
297 i, clip->c.width, clip->c.height,
298 clip->c.left, clip->c.top);
299 clip = clip->next;
300 }
301 break;
302 case V4L2_BUF_TYPE_VBI_CAPTURE:
303 case V4L2_BUF_TYPE_VBI_OUTPUT:
304 vbi = &p->fmt.vbi;
305 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, "
306 "sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n",
307 vbi->sampling_rate, vbi->offset,
308 vbi->samples_per_line,
309 (vbi->sample_format & 0xff),
310 (vbi->sample_format >> 8) & 0xff,
311 (vbi->sample_format >> 16) & 0xff,
312 (vbi->sample_format >> 24) & 0xff,
313 vbi->start[0], vbi->start[1],
314 vbi->count[0], vbi->count[1]);
315 break;
316 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
317 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
318 sliced = &p->fmt.sliced;
319 pr_cont(", service_set=0x%08x, io_size=%d\n",
320 sliced->service_set, sliced->io_size);
321 for (i = 0; i < 24; i++)
322 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
323 sliced->service_lines[0][i],
324 sliced->service_lines[1][i]);
325 break;
be6c64e4
HV		 326 }
327}
328
329static void v4l_print_framebuffer(const void *arg, bool write_only)
330{
331 const struct v4l2_framebuffer *p = arg;
332
333 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, "
334 "height=%u, pixelformat=%c%c%c%c, "
335 "bytesperline=%u sizeimage=%u, colorspace=%d\n",
336 p->capability, p->flags, p->base,
337 p->fmt.width, p->fmt.height,
338 (p->fmt.pixelformat & 0xff),
339 (p->fmt.pixelformat >> 8) & 0xff,
340 (p->fmt.pixelformat >> 16) & 0xff,
341 (p->fmt.pixelformat >> 24) & 0xff,
342 p->fmt.bytesperline, p->fmt.sizeimage,
343 p->fmt.colorspace);
344}
345
e325b244
HV		 346static void v4l_print_buftype(const void *arg, bool write_only)
347{
348 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names));
349}
350
4b1e2e4d
HV		 351static void v4l_print_modulator(const void *arg, bool write_only)
352{
353 const struct v4l2_modulator *p = arg;
354
355 if (write_only)
356 pr_cont("index=%u, txsubchans=0x%x", p->index, p->txsubchans);
357 else
27d5a87c 358 pr_cont("index=%u, name=%.*s, capability=0x%x, "
4b1e2e4d 359 "rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
27d5a87c 360 p->index, (int)sizeof(p->name), p->name, p->capability,
4b1e2e4d
HV		 361 p->rangelow, p->rangehigh, p->txsubchans);
362}
363
364static void v4l_print_tuner(const void *arg, bool write_only)
365{
366 const struct v4l2_tuner *p = arg;
367
368 if (write_only)
369 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode);
370 else
27d5a87c 371 pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, "
4b1e2e4d
HV		 372 "rangelow=%u, rangehigh=%u, signal=%u, afc=%d, "
373 "rxsubchans=0x%x, audmode=%u\n",
27d5a87c 374 p->index, (int)sizeof(p->name), p->name, p->type,
4b1e2e4d
HV		 375 p->capability, p->rangelow,
376 p->rangehigh, p->signal, p->afc,
377 p->rxsubchans, p->audmode);
378}
379
380static void v4l_print_frequency(const void *arg, bool write_only)
381{
382 const struct v4l2_frequency *p = arg;
383
384 pr_cont("tuner=%u, type=%u, frequency=%u\n",
385 p->tuner, p->type, p->frequency);
386}
387
388static void v4l_print_standard(const void *arg, bool write_only)
389{
390 const struct v4l2_standard *p = arg;
391
27d5a87c 392 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, "
4b1e2e4d 393 "framelines=%u\n", p->index,
27d5a87c 394 (unsigned long long)p->id, (int)sizeof(p->name), p->name,
4b1e2e4d
HV		 395 p->frameperiod.numerator,
396 p->frameperiod.denominator,
397 p->framelines);
398}
399
400static void v4l_print_std(const void *arg, bool write_only)
401{
402 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg);
403}
404
405static void v4l_print_hw_freq_seek(const void *arg, bool write_only)
406{
407 const struct v4l2_hw_freq_seek *p = arg;
408
5e788317
HV		 409 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, "
410 "rangelow=%u, rangehigh=%u\n",
411 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing,
412 p->rangelow, p->rangehigh);
4b1e2e4d
HV		 413}
414
eb3728ed 415static void v4l_print_requestbuffers(const void *arg, bool write_only)
59076122 416{
eb3728ed
HV		 417 const struct v4l2_requestbuffers *p = arg;
418
419 pr_cont("count=%d, type=%s, memory=%s\n",
420 p->count,
421 prt_names(p->type, v4l2_type_names),
422 prt_names(p->memory, v4l2_memory_names));
59076122
HV		 423}
424
eb3728ed 425static void v4l_print_buffer(const void *arg, bool write_only)
35ea11ff 426{
eb3728ed
HV		 427 const struct v4l2_buffer *p = arg;
428 const struct v4l2_timecode *tc = &p->timecode;
429 const struct v4l2_plane *plane;
d14e6d76 430 int i;
35ea11ff 431
eb3728ed
HV		 432 pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, "
433 "flags=0x%08x, field=%s, sequence=%d, memory=%s",
35ea11ff
HV		 434 p->timestamp.tv_sec / 3600,
435 (int)(p->timestamp.tv_sec / 60) % 60,
436 (int)(p->timestamp.tv_sec % 60),
b045979d 437 (long)p->timestamp.tv_usec,
35ea11ff
HV		 438 p->index,
439 prt_names(p->type, v4l2_type_names),
eb3728ed
HV		 440 p->flags, prt_names(p->field, v4l2_field_names),
441 p->sequence, prt_names(p->memory, v4l2_memory_names));
d14e6d76
PO		 442
443 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
eb3728ed 444 pr_cont("\n");
d14e6d76
PO		 445 for (i = 0; i < p->length; ++i) {
446 plane = &p->m.planes[i];
eb3728ed
HV		 447 printk(KERN_DEBUG
448 "plane %d: bytesused=%d, data_offset=0x%08x "
449 "offset/userptr=0x%lx, length=%d\n",
d14e6d76
PO		 450 i, plane->bytesused, plane->data_offset,
451 plane->m.userptr, plane->length);
452 }
453 } else {
eb3728ed 454 pr_cont("bytesused=%d, offset/userptr=0x%lx, length=%d\n",
d14e6d76
PO		 455 p->bytesused, p->m.userptr, p->length);
456 }
457
eb3728ed
HV		 458 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, "
459 "flags=0x%08x, frames=%d, userbits=0x%08x\n",
35ea11ff
HV		 460 tc->hours, tc->minutes, tc->seconds,
461 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
462}
463
b799d09a
TS		 464static void v4l_print_exportbuffer(const void *arg, bool write_only)
465{
466 const struct v4l2_exportbuffer *p = arg;
467
468 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n",
469 p->fd, prt_names(p->type, v4l2_type_names),
470 p->index, p->plane, p->flags);
471}
472
eb3728ed
HV		 473static void v4l_print_create_buffers(const void *arg, bool write_only)
474{
475 const struct v4l2_create_buffers *p = arg;
476
477 pr_cont("index=%d, count=%d, memory=%s, ",
478 p->index, p->count,
479 prt_names(p->memory, v4l2_memory_names));
480 v4l_print_format(&p->format, write_only);
481}
482
483static void v4l_print_streamparm(const void *arg, bool write_only)
484{
485 const struct v4l2_streamparm *p = arg;
486
487 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
488
489 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
490 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
491 const struct v4l2_captureparm *c = &p->parm.capture;
492
493 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, "
494 "extendedmode=%d, readbuffers=%d\n",
495 c->capability, c->capturemode,
496 c->timeperframe.numerator, c->timeperframe.denominator,
497 c->extendedmode, c->readbuffers);
498 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
499 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
500 const struct v4l2_outputparm *c = &p->parm.output;
501
502 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, "
503 "extendedmode=%d, writebuffers=%d\n",
504 c->capability, c->outputmode,
505 c->timeperframe.numerator, c->timeperframe.denominator,
506 c->extendedmode, c->writebuffers);
507 }
508}
509
efbceecd
HV		 510static void v4l_print_queryctrl(const void *arg, bool write_only)
511{
512 const struct v4l2_queryctrl *p = arg;
513
27d5a87c 514 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, "
efbceecd 515 "step=%d, default=%d, flags=0x%08x\n",
27d5a87c 516 p->id, p->type, (int)sizeof(p->name), p->name,
efbceecd
HV		 517 p->minimum, p->maximum,
518 p->step, p->default_value, p->flags);
519}
520
521static void v4l_print_querymenu(const void *arg, bool write_only)
522{
523 const struct v4l2_querymenu *p = arg;
524
525 pr_cont("id=0x%x, index=%d\n", p->id, p->index);
526}
527
528static void v4l_print_control(const void *arg, bool write_only)
529{
530 const struct v4l2_control *p = arg;
531
532 pr_cont("id=0x%x, value=%d\n", p->id, p->value);
533}
534
535static void v4l_print_ext_controls(const void *arg, bool write_only)
536{
537 const struct v4l2_ext_controls *p = arg;
538 int i;
539
540 pr_cont("class=0x%x, count=%d, error_idx=%d",
541 p->ctrl_class, p->count, p->error_idx);
542 for (i = 0; i < p->count; i++) {
543 if (p->controls[i].size)
544 pr_cont(", id/val=0x%x/0x%x",
545 p->controls[i].id, p->controls[i].value);
546 else
547 pr_cont(", id/size=0x%x/%u",
548 p->controls[i].id, p->controls[i].size);
549 }
550 pr_cont("\n");
551}
552
d84f2d94 553static void v4l_print_cropcap(const void *arg, bool write_only)
eb3728ed 554{
d84f2d94
HV		 555 const struct v4l2_cropcap *p = arg;
556
557 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, "
558 "defrect wxh=%dx%d, x,y=%d,%d\n, "
559 "pixelaspect %d/%d\n",
560 prt_names(p->type, v4l2_type_names),
561 p->bounds.width, p->bounds.height,
562 p->bounds.left, p->bounds.top,
563 p->defrect.width, p->defrect.height,
564 p->defrect.left, p->defrect.top,
565 p->pixelaspect.numerator, p->pixelaspect.denominator);
eb3728ed
HV		 566}
567
d84f2d94 568static void v4l_print_crop(const void *arg, bool write_only)
35ea11ff 569{
d84f2d94
HV		 570 const struct v4l2_crop *p = arg;
571
572 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n",
573 prt_names(p->type, v4l2_type_names),
574 p->c.width, p->c.height,
575 p->c.left, p->c.top);
576}
577
578static void v4l_print_selection(const void *arg, bool write_only)
579{
580 const struct v4l2_selection *p = arg;
581
582 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n",
583 prt_names(p->type, v4l2_type_names),
584 p->target, p->flags,
585 p->r.width, p->r.height, p->r.left, p->r.top);
586}
587
d806f2df
HV		 588static void v4l_print_jpegcompression(const void *arg, bool write_only)
589{
590 const struct v4l2_jpegcompression *p = arg;
591
592 pr_cont("quality=%d, APPn=%d, APP_len=%d, "
593 "COM_len=%d, jpeg_markers=0x%x\n",
594 p->quality, p->APPn, p->APP_len,
595 p->COM_len, p->jpeg_markers);
596}
597
598static void v4l_print_enc_idx(const void *arg, bool write_only)
599{
600 const struct v4l2_enc_idx *p = arg;
601
602 pr_cont("entries=%d, entries_cap=%d\n",
603 p->entries, p->entries_cap);
604}
605
606static void v4l_print_encoder_cmd(const void *arg, bool write_only)
607{
608 const struct v4l2_encoder_cmd *p = arg;
609
610 pr_cont("cmd=%d, flags=0x%x\n",
611 p->cmd, p->flags);
612}
613
614static void v4l_print_decoder_cmd(const void *arg, bool write_only)
615{
616 const struct v4l2_decoder_cmd *p = arg;
617
618 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags);
619
620 if (p->cmd == V4L2_DEC_CMD_START)
621 pr_info("speed=%d, format=%u\n",
622 p->start.speed, p->start.format);
623 else if (p->cmd == V4L2_DEC_CMD_STOP)
624 pr_info("pts=%llu\n", p->stop.pts);
625}
626
f16f77b0
HV		 627static void v4l_print_dbg_chip_ident(const void *arg, bool write_only)
628{
629 const struct v4l2_dbg_chip_ident *p = arg;
630
631 pr_cont("type=%u, ", p->match.type);
3eef2510 632 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
27d5a87c
HV		 633 pr_cont("name=%.*s, ",
634 (int)sizeof(p->match.name), p->match.name);
f16f77b0
HV		 635 else
636 pr_cont("addr=%u, ", p->match.addr);
637 pr_cont("chip_ident=%u, revision=0x%x\n",
638 p->ident, p->revision);
639}
640
96b03d2a 641static void v4l_print_dbg_chip_info(const void *arg, bool write_only)
79b0c640 642{
96b03d2a 643 const struct v4l2_dbg_chip_info *p = arg;
79b0c640
HV		 644
645 pr_cont("type=%u, ", p->match.type);
3eef2510 646 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
79b0c640
HV		 647 pr_cont("name=%.*s, ",
648 (int)sizeof(p->match.name), p->match.name);
649 else
650 pr_cont("addr=%u, ", p->match.addr);
651 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name);
652}
653
f16f77b0
HV		 654static void v4l_print_dbg_register(const void *arg, bool write_only)
655{
656 const struct v4l2_dbg_register *p = arg;
657
658 pr_cont("type=%u, ", p->match.type);
3eef2510 659 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
27d5a87c
HV		 660 pr_cont("name=%.*s, ",
661 (int)sizeof(p->match.name), p->match.name);
f16f77b0
HV		 662 else
663 pr_cont("addr=%u, ", p->match.addr);
664 pr_cont("reg=0x%llx, val=0x%llx\n",
665 p->reg, p->val);
666}
667
efc626b0 668static void v4l_print_dv_timings(const void *arg, bool write_only)
5d7758ee 669{
efc626b0
HV		 670 const struct v4l2_dv_timings *p = arg;
671
5d7758ee
HV		 672 switch (p->type) {
673 case V4L2_DV_BT_656_1120:
efc626b0
HV		 674 pr_cont("type=bt-656/1120, interlaced=%u, "
675 "pixelclock=%llu, "
676 "width=%u, height=%u, polarities=0x%x, "
677 "hfrontporch=%u, hsync=%u, "
678 "hbackporch=%u, vfrontporch=%u, "
679 "vsync=%u, vbackporch=%u, "
680 "il_vfrontporch=%u, il_vsync=%u, "
681 "il_vbackporch=%u, standards=0x%x, flags=0x%x\n",
5d7758ee
HV		 682 p->bt.interlaced, p->bt.pixelclock,
683 p->bt.width, p->bt.height,
684 p->bt.polarities, p->bt.hfrontporch,
685 p->bt.hsync, p->bt.hbackporch,
686 p->bt.vfrontporch, p->bt.vsync,
687 p->bt.vbackporch, p->bt.il_vfrontporch,
688 p->bt.il_vsync, p->bt.il_vbackporch,
689 p->bt.standards, p->bt.flags);
690 break;
691 default:
efc626b0 692 pr_cont("type=%d\n", p->type);
5d7758ee
HV		 693 break;
694 }
695}
696
efc626b0
HV		 697static void v4l_print_enum_dv_timings(const void *arg, bool write_only)
698{
699 const struct v4l2_enum_dv_timings *p = arg;
700
701 pr_cont("index=%u, ", p->index);
702 v4l_print_dv_timings(&p->timings, write_only);
703}
704
705static void v4l_print_dv_timings_cap(const void *arg, bool write_only)
706{
707 const struct v4l2_dv_timings_cap *p = arg;
708
709 switch (p->type) {
710 case V4L2_DV_BT_656_1120:
711 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, "
712 "pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
713 p->bt.min_width, p->bt.max_width,
714 p->bt.min_height, p->bt.max_height,
715 p->bt.min_pixelclock, p->bt.max_pixelclock,
716 p->bt.standards, p->bt.capabilities);
717 break;
718 default:
719 pr_cont("type=%u\n", p->type);
720 break;
721 }
722}
723
458aa4a6
HV		 724static void v4l_print_frmsizeenum(const void *arg, bool write_only)
725{
726 const struct v4l2_frmsizeenum *p = arg;
727
728 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u",
729 p->index,
730 (p->pixel_format & 0xff),
731 (p->pixel_format >> 8) & 0xff,
732 (p->pixel_format >> 16) & 0xff,
733 (p->pixel_format >> 24) & 0xff,
734 p->type);
735 switch (p->type) {
736 case V4L2_FRMSIZE_TYPE_DISCRETE:
737 pr_cont(" wxh=%ux%u\n",
738 p->discrete.width, p->discrete.height);
739 break;
740 case V4L2_FRMSIZE_TYPE_STEPWISE:
741 pr_cont(" min=%ux%u, max=%ux%u, step=%ux%u\n",
742 p->stepwise.min_width, p->stepwise.min_height,
743 p->stepwise.step_width, p->stepwise.step_height,
744 p->stepwise.max_width, p->stepwise.max_height);
745 break;
746 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
747 /* fall through */
748 default:
749 pr_cont("\n");
750 break;
751 }
752}
753
754static void v4l_print_frmivalenum(const void *arg, bool write_only)
755{
756 const struct v4l2_frmivalenum *p = arg;
757
758 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u",
759 p->index,
760 (p->pixel_format & 0xff),
761 (p->pixel_format >> 8) & 0xff,
762 (p->pixel_format >> 16) & 0xff,
763 (p->pixel_format >> 24) & 0xff,
764 p->width, p->height, p->type);
765 switch (p->type) {
766 case V4L2_FRMIVAL_TYPE_DISCRETE:
767 pr_cont(" fps=%d/%d\n",
768 p->discrete.numerator,
769 p->discrete.denominator);
770 break;
771 case V4L2_FRMIVAL_TYPE_STEPWISE:
772 pr_cont(" min=%d/%d, max=%d/%d, step=%d/%d\n",
773 p->stepwise.min.numerator,
774 p->stepwise.min.denominator,
775 p->stepwise.max.numerator,
776 p->stepwise.max.denominator,
777 p->stepwise.step.numerator,
778 p->stepwise.step.denominator);
779 break;
780 case V4L2_FRMIVAL_TYPE_CONTINUOUS:
781 /* fall through */
782 default:
783 pr_cont("\n");
784 break;
785 }
786}
787
788static void v4l_print_event(const void *arg, bool write_only)
789{
790 const struct v4l2_event *p = arg;
791 const struct v4l2_event_ctrl *c;
792
793 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, "
794 "timestamp=%lu.%9.9lu\n",
795 p->type, p->pending, p->sequence, p->id,
796 p->timestamp.tv_sec, p->timestamp.tv_nsec);
797 switch (p->type) {
798 case V4L2_EVENT_VSYNC:
799 printk(KERN_DEBUG "field=%s\n",
800 prt_names(p->u.vsync.field, v4l2_field_names));
801 break;
802 case V4L2_EVENT_CTRL:
803 c = &p->u.ctrl;
804 printk(KERN_DEBUG "changes=0x%x, type=%u, ",
805 c->changes, c->type);
806 if (c->type == V4L2_CTRL_TYPE_INTEGER64)
807 pr_cont("value64=%lld, ", c->value64);
808 else
809 pr_cont("value=%d, ", c->value);
810 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d,"
811 " default_value=%d\n",
812 c->flags, c->minimum, c->maximum,
813 c->step, c->default_value);
814 break;
815 case V4L2_EVENT_FRAME_SYNC:
816 pr_cont("frame_sequence=%u\n",
817 p->u.frame_sync.frame_sequence);
818 break;
819 }
820}
821
822static void v4l_print_event_subscription(const void *arg, bool write_only)
823{
824 const struct v4l2_event_subscription *p = arg;
825
826 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
827 p->type, p->id, p->flags);
828}
829
830static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only)
831{
832 const struct v4l2_sliced_vbi_cap *p = arg;
833 int i;
834
835 pr_cont("type=%s, service_set=0x%08x\n",
836 prt_names(p->type, v4l2_type_names), p->service_set);
837 for (i = 0; i < 24; i++)
838 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
839 p->service_lines[0][i],
840 p->service_lines[1][i]);
841}
842
82b655bf
HV		 843static void v4l_print_freq_band(const void *arg, bool write_only)
844{
845 const struct v4l2_frequency_band *p = arg;
846
847 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, "
848 "rangelow=%u, rangehigh=%u, modulation=0x%x\n",
849 p->tuner, p->type, p->index,
850 p->capability, p->rangelow,
851 p->rangehigh, p->modulation);
852}
853
efc626b0
HV		 854static void v4l_print_u32(const void *arg, bool write_only)
855{
856 pr_cont("value=%u\n", *(const u32 *)arg);
857}
858
859static void v4l_print_newline(const void *arg, bool write_only)
860{
861 pr_cont("\n");
862}
863
f18d8e07
HV		 864static void v4l_print_default(const void *arg, bool write_only)
865{
866 pr_cont("driver-specific ioctl\n");
867}
868
efbceecd 869static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
35ea11ff
HV		 870{
871 __u32 i;
872
873 /* zero the reserved fields */
874 c->reserved[0] = c->reserved[1] = 0;
6b5a9492 875 for (i = 0; i < c->count; i++)
35ea11ff 876 c->controls[i].reserved2[0] = 0;
6b5a9492 877
35ea11ff
HV		 878 /* V4L2_CID_PRIVATE_BASE cannot be used as control class
879 when using extended controls.
880 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
881 is it allowed for backwards compatibility.
882 */
883 if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE)
884 return 0;
885 /* Check that all controls are from the same control class. */
886 for (i = 0; i < c->count; i++) {
887 if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) {
888 c->error_idx = i;
889 return 0;
890 }
891 }
892 return 1;
893}
894
4b20259f 895static int check_fmt(struct file *file, enum v4l2_buf_type type)
35ea11ff 896{
4b20259f
HV		 897 struct video_device *vfd = video_devdata(file);
898 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
899 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
900 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI;
901 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
902 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
903
a399810c
HV		 904 if (ops == NULL)
905 return -EINVAL;
906
35ea11ff
HV		 907 switch (type) {
908 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f
HV		 909 if (is_vid && is_rx &&
910 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane))
d14e6d76
PO		 911 return 0;
912 break;
913 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 914 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_cap_mplane)
35ea11ff
HV		 915 return 0;
916 break;
917 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 918 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay)
35ea11ff
HV		 919 return 0;
920 break;
921 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f
HV		 922 if (is_vid && is_tx &&
923 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane))
d14e6d76
PO		 924 return 0;
925 break;
926 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 927 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane)
35ea11ff
HV		 928 return 0;
929 break;
930 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 931 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay)
35ea11ff
HV		 932 return 0;
933 break;
934 case V4L2_BUF_TYPE_VBI_CAPTURE:
4b20259f 935 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap)
35ea11ff
HV		 936 return 0;
937 break;
938 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 939 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out)
35ea11ff
HV		 940 return 0;
941 break;
942 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
4b20259f 943 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap)
35ea11ff
HV		 944 return 0;
945 break;
946 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 947 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out)
35ea11ff
HV		 948 return 0;
949 break;
633c98e5 950 default:
35ea11ff
HV		 951 break;
952 }
953 return -EINVAL;
954}
955
59076122
HV		 956static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
957 struct file *file, void *fh, void *arg)
958{
959 struct v4l2_capability *cap = (struct v4l2_capability *)arg;
960
961 cap->version = LINUX_VERSION_CODE;
962 return ops->vidioc_querycap(file, fh, cap);
963}
964
965static int v4l_s_input(const struct v4l2_ioctl_ops *ops,
966 struct file *file, void *fh, void *arg)
967{
968 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg);
969}
970
971static int v4l_s_output(const struct v4l2_ioctl_ops *ops,
972 struct file *file, void *fh, void *arg)
973{
974 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg);
975}
976
d0547cba
HV		 977static int v4l_g_priority(const struct v4l2_ioctl_ops *ops,
978 struct file *file, void *fh, void *arg)
979{
980 struct video_device *vfd;
981 u32 *p = arg;
982
983 if (ops->vidioc_g_priority)
984 return ops->vidioc_g_priority(file, fh, arg);
985 vfd = video_devdata(file);
986 *p = v4l2_prio_max(&vfd->v4l2_dev->prio);
987 return 0;
988}
989
990static int v4l_s_priority(const struct v4l2_ioctl_ops *ops,
991 struct file *file, void *fh, void *arg)
992{
993 struct video_device *vfd;
994 struct v4l2_fh *vfh;
995 u32 *p = arg;
996
997 if (ops->vidioc_s_priority)
998 return ops->vidioc_s_priority(file, fh, *p);
999 vfd = video_devdata(file);
1000 vfh = file->private_data;
1001 return v4l2_prio_change(&vfd->v4l2_dev->prio, &vfh->prio, *p);
1002}
1003
59076122
HV		 1004static int v4l_enuminput(const struct v4l2_ioctl_ops *ops,
1005 struct file *file, void *fh, void *arg)
1006{
73f35418 1007 struct video_device *vfd = video_devdata(file);
59076122
HV		 1008 struct v4l2_input *p = arg;
1009
1010 /*
02fa6282 1011 * We set the flags for CAP_DV_TIMINGS &
59076122
HV		 1012 * CAP_STD here based on ioctl handler provided by the
1013 * driver. If the driver doesn't support these
1014 * for a specific input, it must override these flags.
1015 */
73f35418 1016 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
59076122 1017 p->capabilities |= V4L2_IN_CAP_STD;
59076122
HV		 1018
1019 return ops->vidioc_enum_input(file, fh, p);
1020}
1021
1022static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops,
1023 struct file *file, void *fh, void *arg)
1024{
73f35418 1025 struct video_device *vfd = video_devdata(file);
59076122
HV		 1026 struct v4l2_output *p = arg;
1027
1028 /*
02fa6282 1029 * We set the flags for CAP_DV_TIMINGS &
59076122
HV		 1030 * CAP_STD here based on ioctl handler provided by the
1031 * driver. If the driver doesn't support these
1032 * for a specific output, it must override these flags.
1033 */
73f35418 1034 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
59076122 1035 p->capabilities |= V4L2_OUT_CAP_STD;
59076122
HV		 1036
1037 return ops->vidioc_enum_output(file, fh, p);
1038}
1039
be6c64e4
HV		 1040static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
1041 struct file *file, void *fh, void *arg)
1042{
1043 struct v4l2_fmtdesc *p = arg;
4b20259f
HV		 1044 struct video_device *vfd = video_devdata(file);
1045 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1046 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
be6c64e4
HV		 1047
1048 switch (p->type) {
1049 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1050 if (unlikely(!is_rx || !ops->vidioc_enum_fmt_vid_cap))
be6c64e4
HV		 1051 break;
1052 return ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
1053 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1054 if (unlikely(!is_rx || !ops->vidioc_enum_fmt_vid_cap_mplane))
be6c64e4
HV		 1055 break;
1056 return ops->vidioc_enum_fmt_vid_cap_mplane(file, fh, arg);
1057 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1058 if (unlikely(!is_rx || !ops->vidioc_enum_fmt_vid_overlay))
be6c64e4
HV		 1059 break;
1060 return ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
1061 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1062 if (unlikely(!is_tx || !ops->vidioc_enum_fmt_vid_out))
be6c64e4
HV		 1063 break;
1064 return ops->vidioc_enum_fmt_vid_out(file, fh, arg);
1065 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1066 if (unlikely(!is_tx || !ops->vidioc_enum_fmt_vid_out_mplane))
be6c64e4
HV		 1067 break;
1068 return ops->vidioc_enum_fmt_vid_out_mplane(file, fh, arg);
be6c64e4
HV		 1069 }
1070 return -EINVAL;
1071}
1072
1073static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
1074 struct file *file, void *fh, void *arg)
1075{
1076 struct v4l2_format *p = arg;
4b20259f
HV		 1077 struct video_device *vfd = video_devdata(file);
1078 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1079 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1080 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
be6c64e4
HV		 1081
1082 switch (p->type) {
1083 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1084 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap))
be6c64e4
HV		 1085 break;
1086 return ops->vidioc_g_fmt_vid_cap(file, fh, arg);
1087 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1088 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap_mplane))
be6c64e4
HV		 1089 break;
1090 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
1091 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1092 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_overlay))
be6c64e4
HV		 1093 break;
1094 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
4b20259f
HV		 1095 case V4L2_BUF_TYPE_VBI_CAPTURE:
1096 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_vbi_cap))
1097 break;
1098 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
1099 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1100 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_cap))
1101 break;
1102 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1103 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1104 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out))
be6c64e4
HV		 1105 break;
1106 return ops->vidioc_g_fmt_vid_out(file, fh, arg);
1107 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1108 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_mplane))
be6c64e4
HV		 1109 break;
1110 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
1111 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 1112 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_overlay))
be6c64e4
HV		 1113 break;
1114 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1115 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 1116 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_vbi_out))
be6c64e4
HV		 1117 break;
1118 return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
be6c64e4 1119 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 1120 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_out))
be6c64e4
HV		 1121 break;
1122 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
be6c64e4
HV		 1123 }
1124 return -EINVAL;
1125}
1126
1127static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
1128 struct file *file, void *fh, void *arg)
1129{
1130 struct v4l2_format *p = arg;
4b20259f
HV		 1131 struct video_device *vfd = video_devdata(file);
1132 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1133 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1134 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
be6c64e4
HV		 1135
1136 switch (p->type) {
1137 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1138 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap))
be6c64e4
HV		 1139 break;
1140 CLEAR_AFTER_FIELD(p, fmt.pix);
1141 return ops->vidioc_s_fmt_vid_cap(file, fh, arg);
1142 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1143 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap_mplane))
be6c64e4
HV		 1144 break;
1145 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1146 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
1147 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1148 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_overlay))
be6c64e4
HV		 1149 break;
1150 CLEAR_AFTER_FIELD(p, fmt.win);
1151 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
4b20259f
HV		 1152 case V4L2_BUF_TYPE_VBI_CAPTURE:
1153 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_vbi_cap))
1154 break;
1155 CLEAR_AFTER_FIELD(p, fmt.vbi);
1156 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
1157 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1158 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_cap))
1159 break;
1160 CLEAR_AFTER_FIELD(p, fmt.sliced);
1161 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1162 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1163 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out))
be6c64e4
HV		 1164 break;
1165 CLEAR_AFTER_FIELD(p, fmt.pix);
1166 return ops->vidioc_s_fmt_vid_out(file, fh, arg);
1167 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1168 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_mplane))
be6c64e4
HV		 1169 break;
1170 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1171 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
1172 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 1173 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_overlay))
be6c64e4
HV		 1174 break;
1175 CLEAR_AFTER_FIELD(p, fmt.win);
1176 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1177 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 1178 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_vbi_out))
be6c64e4
HV		 1179 break;
1180 CLEAR_AFTER_FIELD(p, fmt.vbi);
1181 return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
be6c64e4 1182 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 1183 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_out))
be6c64e4
HV		 1184 break;
1185 CLEAR_AFTER_FIELD(p, fmt.sliced);
1186 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
be6c64e4
HV		 1187 }
1188 return -EINVAL;
1189}
1190
1191static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
1192 struct file *file, void *fh, void *arg)
1193{
1194 struct v4l2_format *p = arg;
4b20259f
HV		 1195 struct video_device *vfd = video_devdata(file);
1196 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1197 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1198 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
be6c64e4
HV		 1199
1200 switch (p->type) {
1201 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1202 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap))
be6c64e4
HV		 1203 break;
1204 CLEAR_AFTER_FIELD(p, fmt.pix);
1205 return ops->vidioc_try_fmt_vid_cap(file, fh, arg);
1206 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1207 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap_mplane))
be6c64e4
HV		 1208 break;
1209 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1210 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
1211 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1212 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_overlay))
be6c64e4
HV		 1213 break;
1214 CLEAR_AFTER_FIELD(p, fmt.win);
1215 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
4b20259f
HV		 1216 case V4L2_BUF_TYPE_VBI_CAPTURE:
1217 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_vbi_cap))
1218 break;
1219 CLEAR_AFTER_FIELD(p, fmt.vbi);
1220 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
1221 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1222 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_cap))
1223 break;
1224 CLEAR_AFTER_FIELD(p, fmt.sliced);
1225 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1226 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1227 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out))
be6c64e4
HV		 1228 break;
1229 CLEAR_AFTER_FIELD(p, fmt.pix);
1230 return ops->vidioc_try_fmt_vid_out(file, fh, arg);
1231 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1232 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_mplane))
be6c64e4
HV		 1233 break;
1234 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1235 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
1236 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 1237 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_overlay))
be6c64e4
HV		 1238 break;
1239 CLEAR_AFTER_FIELD(p, fmt.win);
1240 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1241 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 1242 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_vbi_out))
be6c64e4
HV		 1243 break;
1244 CLEAR_AFTER_FIELD(p, fmt.vbi);
1245 return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
be6c64e4 1246 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 1247 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_out))
be6c64e4
HV		 1248 break;
1249 CLEAR_AFTER_FIELD(p, fmt.sliced);
1250 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
be6c64e4
HV		 1251 }
1252 return -EINVAL;
1253}
1254
e325b244
HV		 1255static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
1256 struct file *file, void *fh, void *arg)
1257{
1258 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
1259}
1260
1261static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
1262 struct file *file, void *fh, void *arg)
1263{
1264 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
1265}
1266
4b1e2e4d
HV		 1267static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,
1268 struct file *file, void *fh, void *arg)
1269{
1270 struct video_device *vfd = video_devdata(file);
1271 struct v4l2_tuner *p = arg;
82b655bf 1272 int err;
4b1e2e4d
HV		 1273
1274 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1275 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
82b655bf
HV		 1276 err = ops->vidioc_g_tuner(file, fh, p);
1277 if (!err)
1278 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1279 return err;
4b1e2e4d
HV		 1280}
1281
1282static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
1283 struct file *file, void *fh, void *arg)
1284{
1285 struct video_device *vfd = video_devdata(file);
1286 struct v4l2_tuner *p = arg;
1287
1288 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1289 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1290 return ops->vidioc_s_tuner(file, fh, p);
1291}
1292
82b655bf
HV		 1293static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,
1294 struct file *file, void *fh, void *arg)
1295{
1296 struct v4l2_modulator *p = arg;
1297 int err;
1298
1299 err = ops->vidioc_g_modulator(file, fh, p);
1300 if (!err)
1301 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1302 return err;
1303}
1304
4b1e2e4d
HV		 1305static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
1306 struct file *file, void *fh, void *arg)
1307{
1308 struct video_device *vfd = video_devdata(file);
1309 struct v4l2_frequency *p = arg;
1310
1311 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1312 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1313 return ops->vidioc_g_frequency(file, fh, p);
1314}
1315
1316static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
1317 struct file *file, void *fh, void *arg)
1318{
1319 struct video_device *vfd = video_devdata(file);
b530a447 1320 const struct v4l2_frequency *p = arg;
4b1e2e4d
HV		 1321 enum v4l2_tuner_type type;
1322
1323 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1324 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1325 if (p->type != type)
1326 return -EINVAL;
1327 return ops->vidioc_s_frequency(file, fh, p);
1328}
1329
1330static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
1331 struct file *file, void *fh, void *arg)
1332{
1333 struct video_device *vfd = video_devdata(file);
1334 struct v4l2_standard *p = arg;
1335 v4l2_std_id id = vfd->tvnorms, curr_id = 0;
1336 unsigned int index = p->index, i, j = 0;
1337 const char *descr = "";
1338
a5338190
HV		 1339 /* Return -ENODATA if the tvnorms for the current input
1340 or output is 0, meaning that it doesn't support this API. */
1341 if (id == 0)
1342 return -ENODATA;
1343
4b1e2e4d
HV		 1344 /* Return norm array in a canonical way */
1345 for (i = 0; i <= index && id; i++) {
1346 /* last std value in the standards array is 0, so this
1347 while always ends there since (id & 0) == 0. */
1348 while ((id & standards[j].std) != standards[j].std)
1349 j++;
1350 curr_id = standards[j].std;
1351 descr = standards[j].descr;
1352 j++;
1353 if (curr_id == 0)
1354 break;
1355 if (curr_id != V4L2_STD_PAL &&
1356 curr_id != V4L2_STD_SECAM &&
1357 curr_id != V4L2_STD_NTSC)
1358 id &= ~curr_id;
1359 }
1360 if (i <= index)
1361 return -EINVAL;
1362
1363 v4l2_video_std_construct(p, curr_id, descr);
1364 return 0;
1365}
1366
1367static int v4l_g_std(const struct v4l2_ioctl_ops *ops,
1368 struct file *file, void *fh, void *arg)
1369{
1370 struct video_device *vfd = video_devdata(file);
1371 v4l2_std_id *id = arg;
1372
1373 /* Calls the specific handler */
1374 if (ops->vidioc_g_std)
1375 return ops->vidioc_g_std(file, fh, arg);
1376 if (vfd->current_norm) {
1377 *id = vfd->current_norm;
1378 return 0;
1379 }
1380 return -ENOTTY;
1381}
1382
1383static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
1384 struct file *file, void *fh, void *arg)
1385{
1386 struct video_device *vfd = video_devdata(file);
314527ac 1387 v4l2_std_id id = *(v4l2_std_id *)arg, norm;
4b1e2e4d
HV		 1388 int ret;
1389
314527ac 1390 norm = id & vfd->tvnorms;
4b1e2e4d
HV		 1391 if (vfd->tvnorms && !norm) /* Check if std is supported */
1392 return -EINVAL;
1393
1394 /* Calls the specific handler */
314527ac 1395 ret = ops->vidioc_s_std(file, fh, norm);
4b1e2e4d
HV		 1396
1397 /* Updates standard information */
1398 if (ret >= 0)
1399 vfd->current_norm = norm;
1400 return ret;
1401}
1402
1403static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
1404 struct file *file, void *fh, void *arg)
1405{
1406 struct video_device *vfd = video_devdata(file);
1407 v4l2_std_id *p = arg;
1408
1409 /*
1410 * If nothing detected, it should return all supported
1411 * standard.
1412 * Drivers just need to mask the std argument, in order
1413 * to remove the standards that don't apply from the mask.
1414 * This means that tuners, audio and video decoders can join
1415 * their efforts to improve the standards detection.
1416 */
1417 *p = vfd->tvnorms;
1418 return ops->vidioc_querystd(file, fh, arg);
1419}
1420
1421static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
1422 struct file *file, void *fh, void *arg)
1423{
1424 struct video_device *vfd = video_devdata(file);
1425 struct v4l2_hw_freq_seek *p = arg;
1426 enum v4l2_tuner_type type;
1427
1428 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1429 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1430 if (p->type != type)
1431 return -EINVAL;
1432 return ops->vidioc_s_hw_freq_seek(file, fh, p);
1433}
1434
737c097b
HV		 1435static int v4l_overlay(const struct v4l2_ioctl_ops *ops,
1436 struct file *file, void *fh, void *arg)
1437{
1438 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg);
1439}
1440
eb3728ed
HV		 1441static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,
1442 struct file *file, void *fh, void *arg)
1443{
1444 struct v4l2_requestbuffers *p = arg;
4b20259f 1445 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1446
1447 if (ret)
1448 return ret;
1449
633c98e5 1450 CLEAR_AFTER_FIELD(p, memory);
eb3728ed
HV		 1451
1452 return ops->vidioc_reqbufs(file, fh, p);
1453}
1454
1455static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,
1456 struct file *file, void *fh, void *arg)
1457{
1458 struct v4l2_buffer *p = arg;
4b20259f 1459 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1460
1461 return ret ? ret : ops->vidioc_querybuf(file, fh, p);
1462}
1463
1464static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,
1465 struct file *file, void *fh, void *arg)
1466{
1467 struct v4l2_buffer *p = arg;
4b20259f 1468 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1469
1470 return ret ? ret : ops->vidioc_qbuf(file, fh, p);
1471}
1472
1473static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,
1474 struct file *file, void *fh, void *arg)
1475{
1476 struct v4l2_buffer *p = arg;
4b20259f 1477 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1478
1479 return ret ? ret : ops->vidioc_dqbuf(file, fh, p);
1480}
1481
1482static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
1483 struct file *file, void *fh, void *arg)
1484{
1485 struct v4l2_create_buffers *create = arg;
4b20259f 1486 int ret = check_fmt(file, create->format.type);
eb3728ed
HV		 1487
1488 return ret ? ret : ops->vidioc_create_bufs(file, fh, create);
1489}
1490
1491static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
1492 struct file *file, void *fh, void *arg)
1493{
1494 struct v4l2_buffer *b = arg;
4b20259f 1495 int ret = check_fmt(file, b->type);
eb3728ed
HV		 1496
1497 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
1498}
1499
1500static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
1501 struct file *file, void *fh, void *arg)
1502{
1503 struct video_device *vfd = video_devdata(file);
1504 struct v4l2_streamparm *p = arg;
1505 v4l2_std_id std;
4b20259f 1506 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1507
1508 if (ret)
1509 return ret;
1510 if (ops->vidioc_g_parm)
1511 return ops->vidioc_g_parm(file, fh, p);
1512 std = vfd->current_norm;
1513 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1514 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1515 return -EINVAL;
1516 p->parm.capture.readbuffers = 2;
73f35418 1517 if (is_valid_ioctl(vfd, VIDIOC_G_STD) && ops->vidioc_g_std)
eb3728ed
HV		 1518 ret = ops->vidioc_g_std(file, fh, &std);
1519 if (ret == 0)
1520 v4l2_video_std_frame_period(std,
1521 &p->parm.capture.timeperframe);
1522 return ret;
1523}
1524
1525static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
1526 struct file *file, void *fh, void *arg)
1527{
1528 struct v4l2_streamparm *p = arg;
4b20259f 1529 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1530
1531 return ret ? ret : ops->vidioc_s_parm(file, fh, p);
1532}
1533
efbceecd
HV		 1534static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,
1535 struct file *file, void *fh, void *arg)
1536{
1537 struct video_device *vfd = video_devdata(file);
1538 struct v4l2_queryctrl *p = arg;
7a3ed2d9
HV		 1539 struct v4l2_fh *vfh =
1540 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1541
1542 if (vfh && vfh->ctrl_handler)
1543 return v4l2_queryctrl(vfh->ctrl_handler, p);
1544 if (vfd->ctrl_handler)
1545 return v4l2_queryctrl(vfd->ctrl_handler, p);
1546 if (ops->vidioc_queryctrl)
1547 return ops->vidioc_queryctrl(file, fh, p);
1548 return -ENOTTY;
1549}
1550
1551static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,
1552 struct file *file, void *fh, void *arg)
1553{
1554 struct video_device *vfd = video_devdata(file);
1555 struct v4l2_querymenu *p = arg;
7a3ed2d9
HV		 1556 struct v4l2_fh *vfh =
1557 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1558
1559 if (vfh && vfh->ctrl_handler)
1560 return v4l2_querymenu(vfh->ctrl_handler, p);
1561 if (vfd->ctrl_handler)
1562 return v4l2_querymenu(vfd->ctrl_handler, p);
1563 if (ops->vidioc_querymenu)
1564 return ops->vidioc_querymenu(file, fh, p);
1565 return -ENOTTY;
1566}
1567
1568static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops,
1569 struct file *file, void *fh, void *arg)
1570{
1571 struct video_device *vfd = video_devdata(file);
1572 struct v4l2_control *p = arg;
7a3ed2d9
HV		 1573 struct v4l2_fh *vfh =
1574 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1575 struct v4l2_ext_controls ctrls;
1576 struct v4l2_ext_control ctrl;
1577
1578 if (vfh && vfh->ctrl_handler)
1579 return v4l2_g_ctrl(vfh->ctrl_handler, p);
1580 if (vfd->ctrl_handler)
1581 return v4l2_g_ctrl(vfd->ctrl_handler, p);
1582 if (ops->vidioc_g_ctrl)
1583 return ops->vidioc_g_ctrl(file, fh, p);
1584 if (ops->vidioc_g_ext_ctrls == NULL)
1585 return -ENOTTY;
1586
1587 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1588 ctrls.count = 1;
1589 ctrls.controls = &ctrl;
1590 ctrl.id = p->id;
1591 ctrl.value = p->value;
1592 if (check_ext_ctrls(&ctrls, 1)) {
1593 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
1594
1595 if (ret == 0)
1596 p->value = ctrl.value;
1597 return ret;
1598 }
1599 return -EINVAL;
1600}
1601
1602static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,
1603 struct file *file, void *fh, void *arg)
1604{
1605 struct video_device *vfd = video_devdata(file);
1606 struct v4l2_control *p = arg;
7a3ed2d9
HV		 1607 struct v4l2_fh *vfh =
1608 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1609 struct v4l2_ext_controls ctrls;
1610 struct v4l2_ext_control ctrl;
1611
1612 if (vfh && vfh->ctrl_handler)
1613 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
1614 if (vfd->ctrl_handler)
1615 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
1616 if (ops->vidioc_s_ctrl)
1617 return ops->vidioc_s_ctrl(file, fh, p);
1618 if (ops->vidioc_s_ext_ctrls == NULL)
1619 return -ENOTTY;
1620
1621 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1622 ctrls.count = 1;
1623 ctrls.controls = &ctrl;
1624 ctrl.id = p->id;
1625 ctrl.value = p->value;
1626 if (check_ext_ctrls(&ctrls, 1))
1627 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
1628 return -EINVAL;
1629}
1630
1631static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1632 struct file *file, void *fh, void *arg)
1633{
1634 struct video_device *vfd = video_devdata(file);
1635 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 1636 struct v4l2_fh *vfh =
1637 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1638
1639 p->error_idx = p->count;
1640 if (vfh && vfh->ctrl_handler)
1641 return v4l2_g_ext_ctrls(vfh->ctrl_handler, p);
1642 if (vfd->ctrl_handler)
1643 return v4l2_g_ext_ctrls(vfd->ctrl_handler, p);
1644 if (ops->vidioc_g_ext_ctrls == NULL)
1645 return -ENOTTY;
1646 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :
1647 -EINVAL;
1648}
1649
1650static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1651 struct file *file, void *fh, void *arg)
1652{
1653 struct video_device *vfd = video_devdata(file);
1654 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 1655 struct v4l2_fh *vfh =
1656 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1657
1658 p->error_idx = p->count;
1659 if (vfh && vfh->ctrl_handler)
1660 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, p);
1661 if (vfd->ctrl_handler)
1662 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, p);
1663 if (ops->vidioc_s_ext_ctrls == NULL)
1664 return -ENOTTY;
1665 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :
1666 -EINVAL;
1667}
1668
1669static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1670 struct file *file, void *fh, void *arg)
1671{
1672 struct video_device *vfd = video_devdata(file);
1673 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 1674 struct v4l2_fh *vfh =
1675 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1676
1677 p->error_idx = p->count;
1678 if (vfh && vfh->ctrl_handler)
1679 return v4l2_try_ext_ctrls(vfh->ctrl_handler, p);
1680 if (vfd->ctrl_handler)
1681 return v4l2_try_ext_ctrls(vfd->ctrl_handler, p);
1682 if (ops->vidioc_try_ext_ctrls == NULL)
1683 return -ENOTTY;
1684 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :
1685 -EINVAL;
1686}
1687
d84f2d94
HV		 1688static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
1689 struct file *file, void *fh, void *arg)
1690{
1691 struct v4l2_crop *p = arg;
1692 struct v4l2_selection s = {
1693 .type = p->type,
1694 };
1695 int ret;
1696
1697 if (ops->vidioc_g_crop)
1698 return ops->vidioc_g_crop(file, fh, p);
1699 /* simulate capture crop using selection api */
1700
1701 /* crop means compose for output devices */
1702 if (V4L2_TYPE_IS_OUTPUT(p->type))
1703 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
1704 else
1705 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
1706
1707 ret = ops->vidioc_g_selection(file, fh, &s);
1708
1709 /* copying results to old structure on success */
1710 if (!ret)
1711 p->c = s.r;
1712 return ret;
1713}
1714
1715static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
1716 struct file *file, void *fh, void *arg)
1717{
1718 struct v4l2_crop *p = arg;
1719 struct v4l2_selection s = {
1720 .type = p->type,
1721 .r = p->c,
1722 };
1723
1724 if (ops->vidioc_s_crop)
1725 return ops->vidioc_s_crop(file, fh, p);
1726 /* simulate capture crop using selection api */
1727
1728 /* crop means compose for output devices */
1729 if (V4L2_TYPE_IS_OUTPUT(p->type))
1730 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
1731 else
1732 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
1733
1734 return ops->vidioc_s_selection(file, fh, &s);
1735}
1736
1737static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
1738 struct file *file, void *fh, void *arg)
1739{
1740 struct v4l2_cropcap *p = arg;
1741 struct v4l2_selection s = { .type = p->type };
1742 int ret;
1743
1744 if (ops->vidioc_cropcap)
1745 return ops->vidioc_cropcap(file, fh, p);
1746
1747 /* obtaining bounds */
1748 if (V4L2_TYPE_IS_OUTPUT(p->type))
1749 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
1750 else
1751 s.target = V4L2_SEL_TGT_CROP_BOUNDS;
1752
1753 ret = ops->vidioc_g_selection(file, fh, &s);
1754 if (ret)
1755 return ret;
1756 p->bounds = s.r;
1757
1758 /* obtaining defrect */
1759 if (V4L2_TYPE_IS_OUTPUT(p->type))
1760 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
1761 else
1762 s.target = V4L2_SEL_TGT_CROP_DEFAULT;
1763
1764 ret = ops->vidioc_g_selection(file, fh, &s);
1765 if (ret)
1766 return ret;
1767 p->defrect = s.r;
1768
1769 /* setting trivial pixelaspect */
1770 p->pixelaspect.numerator = 1;
1771 p->pixelaspect.denominator = 1;
1772 return 0;
1773}
1774
f16f77b0
HV		 1775static int v4l_log_status(const struct v4l2_ioctl_ops *ops,
1776 struct file *file, void *fh, void *arg)
1777{
1778 struct video_device *vfd = video_devdata(file);
1779 int ret;
1780
1781 if (vfd->v4l2_dev)
1782 pr_info("%s: ================= START STATUS =================\n",
1783 vfd->v4l2_dev->name);
1784 ret = ops->vidioc_log_status(file, fh);
1785 if (vfd->v4l2_dev)
1786 pr_info("%s: ================== END STATUS ==================\n",
1787 vfd->v4l2_dev->name);
1788 return ret;
1789}
1790
1791static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
1792 struct file *file, void *fh, void *arg)
1793{
1794#ifdef CONFIG_VIDEO_ADV_DEBUG
1795 struct v4l2_dbg_register *p = arg;
79b0c640
HV		 1796 struct video_device *vfd = video_devdata(file);
1797 struct v4l2_subdev *sd;
1798 int idx = 0;
f16f77b0
HV		 1799
1800 if (!capable(CAP_SYS_ADMIN))
1801 return -EPERM;
3eef2510 1802 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
79b0c640
HV		 1803 if (vfd->v4l2_dev == NULL)
1804 return -EINVAL;
3eef2510
HV		 1805 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
1806 if (p->match.addr == idx++)
79b0c640 1807 return v4l2_subdev_call(sd, core, g_register, p);
79b0c640
HV		 1808 return -EINVAL;
1809 }
1810 if (ops->vidioc_g_register)
1811 return ops->vidioc_g_register(file, fh, p);
1812 return -EINVAL;
f16f77b0
HV		 1813#else
1814 return -ENOTTY;
1815#endif
1816}
1817
1818static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
1819 struct file *file, void *fh, void *arg)
1820{
1821#ifdef CONFIG_VIDEO_ADV_DEBUG
977ba3b1 1822 const struct v4l2_dbg_register *p = arg;
79b0c640
HV		 1823 struct video_device *vfd = video_devdata(file);
1824 struct v4l2_subdev *sd;
1825 int idx = 0;
f16f77b0
HV		 1826
1827 if (!capable(CAP_SYS_ADMIN))
1828 return -EPERM;
3eef2510 1829 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
79b0c640
HV		 1830 if (vfd->v4l2_dev == NULL)
1831 return -EINVAL;
3eef2510
HV		 1832 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
1833 if (p->match.addr == idx++)
79b0c640 1834 return v4l2_subdev_call(sd, core, s_register, p);
79b0c640
HV		 1835 return -EINVAL;
1836 }
1837 if (ops->vidioc_s_register)
1838 return ops->vidioc_s_register(file, fh, p);
1839 return -EINVAL;
f16f77b0
HV		 1840#else
1841 return -ENOTTY;
1842#endif
1843}
1844
1845static int v4l_dbg_g_chip_ident(const struct v4l2_ioctl_ops *ops,
1846 struct file *file, void *fh, void *arg)
1847{
1848 struct v4l2_dbg_chip_ident *p = arg;
1849
1850 p->ident = V4L2_IDENT_NONE;
1851 p->revision = 0;
3eef2510 1852 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV)
79b0c640 1853 return -EINVAL;
f16f77b0
HV		 1854 return ops->vidioc_g_chip_ident(file, fh, p);
1855}
1856
96b03d2a 1857static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,
79b0c640
HV		 1858 struct file *file, void *fh, void *arg)
1859{
cd634f1b 1860#ifdef CONFIG_VIDEO_ADV_DEBUG
79b0c640 1861 struct video_device *vfd = video_devdata(file);
96b03d2a 1862 struct v4l2_dbg_chip_info *p = arg;
79b0c640
HV		 1863 struct v4l2_subdev *sd;
1864 int idx = 0;
1865
1866 switch (p->match.type) {
1867 case V4L2_CHIP_MATCH_BRIDGE:
79b0c640
HV		 1868 if (ops->vidioc_s_register)
1869 p->flags |= V4L2_CHIP_FL_WRITABLE;
1870 if (ops->vidioc_g_register)
1871 p->flags |= V4L2_CHIP_FL_READABLE;
79b0c640
HV		 1872 if (vfd->v4l2_dev)
1873 strlcpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));
1874 else if (vfd->parent)
1875 strlcpy(p->name, vfd->parent->driver->name, sizeof(p->name));
1876 else
1877 strlcpy(p->name, "bridge", sizeof(p->name));
96b03d2a
HV		 1878 if (ops->vidioc_g_chip_info)
1879 return ops->vidioc_g_chip_info(file, fh, arg);
0f0fe4b9
HV		 1880 if (p->match.addr)
1881 return -EINVAL;
79b0c640
HV		 1882 return 0;
1883
3eef2510 1884 case V4L2_CHIP_MATCH_SUBDEV:
79b0c640
HV		 1885 if (vfd->v4l2_dev == NULL)
1886 break;
1887 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {
3eef2510
HV		 1888 if (p->match.addr != idx++)
1889 continue;
1890 if (sd->ops->core && sd->ops->core->s_register)
1891 p->flags |= V4L2_CHIP_FL_WRITABLE;
1892 if (sd->ops->core && sd->ops->core->g_register)
1893 p->flags |= V4L2_CHIP_FL_READABLE;
1894 strlcpy(p->name, sd->name, sizeof(p->name));
1895 return 0;
79b0c640
HV		 1896 }
1897 break;
1898 }
1899 return -EINVAL;
cd634f1b
HV		 1900#else
1901 return -ENOTTY;
1902#endif
79b0c640
HV		 1903}
1904
458aa4a6
HV		 1905static int v4l_dqevent(const struct v4l2_ioctl_ops *ops,
1906 struct file *file, void *fh, void *arg)
1907{
1908 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK);
1909}
1910
1911static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,
1912 struct file *file, void *fh, void *arg)
1913{
1914 return ops->vidioc_subscribe_event(fh, arg);
1915}
1916
1917static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,
1918 struct file *file, void *fh, void *arg)
1919{
1920 return ops->vidioc_unsubscribe_event(fh, arg);
1921}
1922
1923static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,
1924 struct file *file, void *fh, void *arg)
1925{
1926 struct v4l2_sliced_vbi_cap *p = arg;
4b20259f
HV		 1927 int ret = check_fmt(file, p->type);
1928
1929 if (ret)
1930 return ret;
458aa4a6
HV		 1931
1932 /* Clear up to type, everything after type is zeroed already */
1933 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
1934
1935 return ops->vidioc_g_sliced_vbi_cap(file, fh, p);
1936}
1937
82b655bf
HV		 1938static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
1939 struct file *file, void *fh, void *arg)
1940{
1941 struct video_device *vfd = video_devdata(file);
1942 struct v4l2_frequency_band *p = arg;
1943 enum v4l2_tuner_type type;
1944 int err;
1945
1946 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1947 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1948
1949 if (type != p->type)
1950 return -EINVAL;
1951 if (ops->vidioc_enum_freq_bands)
1952 return ops->vidioc_enum_freq_bands(file, fh, p);
73f35418 1953 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) {
82b655bf
HV		 1954 struct v4l2_tuner t = {
1955 .index = p->tuner,
1956 .type = type,
1957 };
1958
aa4d9b53
HV		 1959 if (p->index)
1960 return -EINVAL;
82b655bf
HV		 1961 err = ops->vidioc_g_tuner(file, fh, &t);
1962 if (err)
1963 return err;
1964 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;
1965 p->rangelow = t.rangelow;
1966 p->rangehigh = t.rangehigh;
1967 p->modulation = (type == V4L2_TUNER_RADIO) ?
1968 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
1969 return 0;
1970 }
73f35418 1971 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) {
82b655bf
HV		 1972 struct v4l2_modulator m = {
1973 .index = p->tuner,
1974 };
1975
1976 if (type != V4L2_TUNER_RADIO)
1977 return -EINVAL;
aa4d9b53
HV		 1978 if (p->index)
1979 return -EINVAL;
82b655bf
HV		 1980 err = ops->vidioc_g_modulator(file, fh, &m);
1981 if (err)
1982 return err;
1983 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;
1984 p->rangelow = m.rangelow;
1985 p->rangehigh = m.rangehigh;
1986 p->modulation = (type == V4L2_TUNER_RADIO) ?
1987 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
1988 return 0;
1989 }
1990 return -ENOTTY;
1991}
1992
4839e6c2
HV		 1993struct v4l2_ioctl_info {
1994 unsigned int ioctl;
27cd2aba 1995 u32 flags;
4839e6c2 1996 const char * const name;
86748f35
HV		 1997 union {
1998 u32 offset;
1999 int (*func)(const struct v4l2_ioctl_ops *ops,
2000 struct file *file, void *fh, void *p);
26ddcbcc 2001 } u;
86748f35 2002 void (*debug)(const void *arg, bool write_only);
4839e6c2
HV		 2003};
2004
2005/* This control needs a priority check */
2006#define INFO_FL_PRIO (1 << 0)
2007/* This control can be valid if the filehandle passes a control handler. */
2008#define INFO_FL_CTRL (1 << 1)
86748f35
HV		 2009/* This is a standard ioctl, no need for special code */
2010#define INFO_FL_STD (1 << 2)
2011/* This is ioctl has its own function */
2012#define INFO_FL_FUNC (1 << 3)
5a5adf6b
HV		 2013/* Queuing ioctl */
2014#define INFO_FL_QUEUE (1 << 4)
27cd2aba
HV		 2015/* Zero struct from after the field to the end */
2016#define INFO_FL_CLEAR(v4l2_struct, field) \
2017 ((offsetof(struct v4l2_struct, field) + \
2018 sizeof(((struct v4l2_struct *)0)->field)) << 16)
2019#define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
4839e6c2 2020
86748f35
HV		 2021#define IOCTL_INFO_STD(_ioctl, _vidioc, _debug, _flags) \
2022 [_IOC_NR(_ioctl)] = { \
2023 .ioctl = _ioctl, \
2024 .flags = _flags | INFO_FL_STD, \
2025 .name = #_ioctl, \
26ddcbcc 2026 .u.offset = offsetof(struct v4l2_ioctl_ops, _vidioc), \
86748f35
HV		 2027 .debug = _debug, \
2028 }
2029
2030#define IOCTL_INFO_FNC(_ioctl, _func, _debug, _flags) \
2031 [_IOC_NR(_ioctl)] = { \
2032 .ioctl = _ioctl, \
2033 .flags = _flags | INFO_FL_FUNC, \
2034 .name = #_ioctl, \
26ddcbcc 2035 .u.func = _func, \
86748f35
HV		 2036 .debug = _debug, \
2037 }
2038
4839e6c2 2039static struct v4l2_ioctl_info v4l2_ioctls[] = {
59076122 2040 IOCTL_INFO_FNC(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
be6c64e4
HV		 2041 IOCTL_INFO_FNC(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)),
2042 IOCTL_INFO_FNC(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, INFO_FL_CLEAR(v4l2_format, type)),
2043 IOCTL_INFO_FNC(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
5a5adf6b
HV		 2044 IOCTL_INFO_FNC(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2045 IOCTL_INFO_FNC(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
be6c64e4
HV		 2046 IOCTL_INFO_STD(VIDIOC_G_FBUF, vidioc_g_fbuf, v4l_print_framebuffer, 0),
2047 IOCTL_INFO_STD(VIDIOC_S_FBUF, vidioc_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
737c097b 2048 IOCTL_INFO_FNC(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO),
5a5adf6b 2049 IOCTL_INFO_FNC(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),
b799d09a 2050 IOCTL_INFO_STD(VIDIOC_EXPBUF, vidioc_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)),
5a5adf6b
HV		 2051 IOCTL_INFO_FNC(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),
2052 IOCTL_INFO_FNC(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2053 IOCTL_INFO_FNC(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
eb3728ed
HV		 2054 IOCTL_INFO_FNC(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
2055 IOCTL_INFO_FNC(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
4b1e2e4d
HV		 2056 IOCTL_INFO_FNC(VIDIOC_G_STD, v4l_g_std, v4l_print_std, 0),
2057 IOCTL_INFO_FNC(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
2058 IOCTL_INFO_FNC(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
59076122 2059 IOCTL_INFO_FNC(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
efbceecd
HV		 2060 IOCTL_INFO_FNC(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
2061 IOCTL_INFO_FNC(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
4b1e2e4d
HV		 2062 IOCTL_INFO_FNC(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
2063 IOCTL_INFO_FNC(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
59076122
HV		 2064 IOCTL_INFO_STD(VIDIOC_G_AUDIO, vidioc_g_audio, v4l_print_audio, 0),
2065 IOCTL_INFO_STD(VIDIOC_S_AUDIO, vidioc_s_audio, v4l_print_audio, INFO_FL_PRIO),
efbceecd
HV		 2066 IOCTL_INFO_FNC(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
2067 IOCTL_INFO_FNC(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
59076122
HV		 2068 IOCTL_INFO_STD(VIDIOC_G_INPUT, vidioc_g_input, v4l_print_u32, 0),
2069 IOCTL_INFO_FNC(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
2070 IOCTL_INFO_STD(VIDIOC_G_OUTPUT, vidioc_g_output, v4l_print_u32, 0),
2071 IOCTL_INFO_FNC(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
2072 IOCTL_INFO_FNC(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
2073 IOCTL_INFO_STD(VIDIOC_G_AUDOUT, vidioc_g_audout, v4l_print_audioout, 0),
2074 IOCTL_INFO_STD(VIDIOC_S_AUDOUT, vidioc_s_audout, v4l_print_audioout, INFO_FL_PRIO),
82b655bf 2075 IOCTL_INFO_FNC(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
4b1e2e4d
HV		 2076 IOCTL_INFO_STD(VIDIOC_S_MODULATOR, vidioc_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
2077 IOCTL_INFO_FNC(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
2078 IOCTL_INFO_FNC(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
d84f2d94
HV		 2079 IOCTL_INFO_FNC(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
2080 IOCTL_INFO_FNC(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
2081 IOCTL_INFO_FNC(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
2082 IOCTL_INFO_STD(VIDIOC_G_SELECTION, vidioc_g_selection, v4l_print_selection, 0),
2083 IOCTL_INFO_STD(VIDIOC_S_SELECTION, vidioc_s_selection, v4l_print_selection, INFO_FL_PRIO),
d806f2df
HV		 2084 IOCTL_INFO_STD(VIDIOC_G_JPEGCOMP, vidioc_g_jpegcomp, v4l_print_jpegcompression, 0),
2085 IOCTL_INFO_STD(VIDIOC_S_JPEGCOMP, vidioc_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
4b1e2e4d 2086 IOCTL_INFO_FNC(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
be6c64e4 2087 IOCTL_INFO_FNC(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
59076122
HV		 2088 IOCTL_INFO_STD(VIDIOC_ENUMAUDIO, vidioc_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
2089 IOCTL_INFO_STD(VIDIOC_ENUMAUDOUT, vidioc_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
d0547cba
HV		 2090 IOCTL_INFO_FNC(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
2091 IOCTL_INFO_FNC(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
458aa4a6 2092 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 2093 IOCTL_INFO_FNC(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
efbceecd
HV		 2094 IOCTL_INFO_FNC(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2095 IOCTL_INFO_FNC(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL),
9bc31633 2096 IOCTL_INFO_FNC(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
458aa4a6
HV		 2097 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMESIZES, vidioc_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
2098 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMEINTERVALS, vidioc_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
d806f2df
HV		 2099 IOCTL_INFO_STD(VIDIOC_G_ENC_INDEX, vidioc_g_enc_index, v4l_print_enc_idx, 0),
2100 IOCTL_INFO_STD(VIDIOC_ENCODER_CMD, vidioc_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2101 IOCTL_INFO_STD(VIDIOC_TRY_ENCODER_CMD, vidioc_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2102 IOCTL_INFO_STD(VIDIOC_DECODER_CMD, vidioc_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
2103 IOCTL_INFO_STD(VIDIOC_TRY_DECODER_CMD, vidioc_try_decoder_cmd, v4l_print_decoder_cmd, 0),
f16f77b0
HV		 2104 IOCTL_INFO_FNC(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
2105 IOCTL_INFO_FNC(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
2106 IOCTL_INFO_FNC(VIDIOC_DBG_G_CHIP_IDENT, v4l_dbg_g_chip_ident, v4l_print_dbg_chip_ident, 0),
4b1e2e4d 2107 IOCTL_INFO_FNC(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
efc626b0
HV		 2108 IOCTL_INFO_STD(VIDIOC_S_DV_TIMINGS, vidioc_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO),
2109 IOCTL_INFO_STD(VIDIOC_G_DV_TIMINGS, vidioc_g_dv_timings, v4l_print_dv_timings, 0),
458aa4a6
HV		 2110 IOCTL_INFO_FNC(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
2111 IOCTL_INFO_FNC(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
2112 IOCTL_INFO_FNC(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
5a5adf6b
HV		 2113 IOCTL_INFO_FNC(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2114 IOCTL_INFO_FNC(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
efc626b0
HV		 2115 IOCTL_INFO_STD(VIDIOC_ENUM_DV_TIMINGS, vidioc_enum_dv_timings, v4l_print_enum_dv_timings, 0),
2116 IOCTL_INFO_STD(VIDIOC_QUERY_DV_TIMINGS, vidioc_query_dv_timings, v4l_print_dv_timings, 0),
a1acb8f9 2117 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 2118 IOCTL_INFO_FNC(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
96b03d2a 2119 IOCTL_INFO_FNC(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
4839e6c2
HV		 2120};
2121#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
2122
2123bool v4l2_is_known_ioctl(unsigned int cmd)
2124{
2125 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2126 return false;
2127 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
2128}
2129
5a5adf6b
HV		 2130struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd)
2131{
2132 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2133 return vdev->lock;
2134 if (test_bit(_IOC_NR(cmd), vdev->disable_locking))
2135 return NULL;
2136 if (vdev->queue && vdev->queue->lock &&
2137 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
2138 return vdev->queue->lock;
2139 return vdev->lock;
2140}
2141
4839e6c2
HV		 2142/* Common ioctl debug function. This function can be used by
2143 external ioctl messages as well as internal V4L ioctl */
4a085168 2144void v4l_printk_ioctl(const char *prefix, unsigned int cmd)
4839e6c2 2145{
86748f35 2146 const char *dir, *type;
4839e6c2 2147
4a085168
HV		 2148 if (prefix)
2149 printk(KERN_DEBUG "%s: ", prefix);
2150
4839e6c2
HV		 2151 switch (_IOC_TYPE(cmd)) {
2152 case 'd':
2153 type = "v4l2_int";
2154 break;
2155 case 'V':
2156 if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
2157 type = "v4l2";
2158 break;
2159 }
86748f35 2160 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
4839e6c2
HV		 2161 return;
2162 default:
2163 type = "unknown";
86748f35 2164 break;
4839e6c2
HV		 2165 }
2166
2167 switch (_IOC_DIR(cmd)) {
2168 case _IOC_NONE: dir = "--"; break;
2169 case _IOC_READ: dir = "r-"; break;
2170 case _IOC_WRITE: dir = "-w"; break;
2171 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
2172 default: dir = "*ERR*"; break;
2173 }
86748f35 2174 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
4839e6c2
HV		 2175 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
2176}
2177EXPORT_SYMBOL(v4l_printk_ioctl);
2178
069b7479 2179static long __video_do_ioctl(struct file *file,
35ea11ff
HV		 2180 unsigned int cmd, void *arg)
2181{
2182 struct video_device *vfd = video_devdata(file);
a399810c 2183 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
86748f35
HV		 2184 bool write_only = false;
2185 struct v4l2_ioctl_info default_info;
2186 const struct v4l2_ioctl_info *info;
d5fbf32f 2187 void *fh = file->private_data;
99cd47bc 2188 struct v4l2_fh *vfh = NULL;
b1a873a3 2189 int use_fh_prio = 0;
80131fe0 2190 int debug = vfd->debug;
9190d191 2191 long ret = -ENOTTY;
35ea11ff 2192
6a717883 2193 if (ops == NULL) {
4a085168
HV		 2194 pr_warn("%s: has no ioctl_ops.\n",
2195 video_device_node_name(vfd));
9190d191 2196 return ret;
6a717883
HV		 2197 }
2198
b1a873a3 2199 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) {
99cd47bc 2200 vfh = file->private_data;
b1a873a3
HV		 2201 use_fh_prio = test_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
2202 }
99cd47bc 2203
48ea0be0 2204 if (v4l2_is_known_ioctl(cmd)) {
86748f35 2205 info = &v4l2_ioctls[_IOC_NR(cmd)];
48ea0be0
HV		 2206
2207 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) &&
2208 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
86748f35 2209 goto done;
4b902fec
HV		 2210
2211 if (use_fh_prio && (info->flags & INFO_FL_PRIO)) {
2212 ret = v4l2_prio_check(vfd->prio, vfh->prio);
2213 if (ret)
86748f35 2214 goto done;
4b902fec 2215 }
86748f35
HV		 2216 } else {
2217 default_info.ioctl = cmd;
2218 default_info.flags = 0;
f18d8e07 2219 default_info.debug = v4l_print_default;
86748f35 2220 info = &default_info;
48ea0be0
HV		 2221 }
2222
86748f35 2223 write_only = _IOC_DIR(cmd) == _IOC_WRITE;
86748f35
HV		 2224 if (info->flags & INFO_FL_STD) {
2225 typedef int (*vidioc_op)(struct file *file, void *fh, void *p);
2226 const void *p = vfd->ioctl_ops;
26ddcbcc 2227 const vidioc_op *vidioc = p + info->u.offset;
86748f35
HV		 2228
2229 ret = (*vidioc)(file, fh, arg);
86748f35 2230 } else if (info->flags & INFO_FL_FUNC) {
26ddcbcc 2231 ret = info->u.func(ops, file, fh, arg);
f18d8e07
HV		 2232 } else if (!ops->vidioc_default) {
2233 ret = -ENOTTY;
2234 } else {
2235 ret = ops->vidioc_default(file, fh,
2236 use_fh_prio ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
2237 cmd, arg);
48ea0be0 2238 }
99cd47bc 2239
86748f35 2240done:
80131fe0 2241 if (debug) {
4a085168 2242 v4l_printk_ioctl(video_device_node_name(vfd), cmd);
86748f35 2243 if (ret < 0)
505d04bd
HV		 2244 pr_cont(": error %ld", ret);
2245 if (debug == V4L2_DEBUG_IOCTL)
86748f35 2246 pr_cont("\n");
86748f35
HV		 2247 else if (_IOC_DIR(cmd) == _IOC_NONE)
2248 info->debug(arg, write_only);
2249 else {
2250 pr_cont(": ");
2251 info->debug(arg, write_only);
35ea11ff
HV		 2252 }
2253 }
2254
2255 return ret;
2256}
2257
d14e6d76
PO		 2258static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
2259 void * __user *user_ptr, void ***kernel_ptr)
2260{
2261 int ret = 0;
2262
2263 switch (cmd) {
96b1a702 2264 case VIDIOC_PREPARE_BUF:
d14e6d76
PO		 2265 case VIDIOC_QUERYBUF:
2266 case VIDIOC_QBUF:
2267 case VIDIOC_DQBUF: {
2268 struct v4l2_buffer *buf = parg;
2269
2270 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
2271 if (buf->length > VIDEO_MAX_PLANES) {
2272 ret = -EINVAL;
2273 break;
2274 }
2275 *user_ptr = (void __user *)buf->m.planes;
2ef40370 2276 *kernel_ptr = (void *)&buf->m.planes;
d14e6d76
PO		 2277 *array_size = sizeof(struct v4l2_plane) * buf->length;
2278 ret = 1;
2279 }
2280 break;
2281 }
2282
ed45ce2c
HV		 2283 case VIDIOC_SUBDEV_G_EDID:
2284 case VIDIOC_SUBDEV_S_EDID: {
2285 struct v4l2_subdev_edid *edid = parg;
2286
2287 if (edid->blocks) {
1b8b10cc
HV		 2288 if (edid->blocks > 256) {
2289 ret = -EINVAL;
2290 break;
2291 }
ed45ce2c
HV		 2292 *user_ptr = (void __user *)edid->edid;
2293 *kernel_ptr = (void *)&edid->edid;
2294 *array_size = edid->blocks * 128;
2295 ret = 1;
2296 }
2297 break;
2298 }
2299
d14e6d76
PO		 2300 case VIDIOC_S_EXT_CTRLS:
2301 case VIDIOC_G_EXT_CTRLS:
2302 case VIDIOC_TRY_EXT_CTRLS: {
2303 struct v4l2_ext_controls *ctrls = parg;
2304
2305 if (ctrls->count != 0) {
6c06108b
DC		 2306 if (ctrls->count > V4L2_CID_MAX_CTRLS) {
2307 ret = -EINVAL;
2308 break;
2309 }
d14e6d76 2310 *user_ptr = (void __user *)ctrls->controls;
2ef40370 2311 *kernel_ptr = (void *)&ctrls->controls;
d14e6d76
PO		 2312 *array_size = sizeof(struct v4l2_ext_control)
2313 * ctrls->count;
2314 ret = 1;
2315 }
2316 break;
2317 }
2318 }
2319
2320 return ret;
2321}
2322
fc0a8079
LP		 2323long
2324video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
2325 v4l2_kioctl func)
35ea11ff
HV		 2326{
2327 char sbuf[128];
2328 void *mbuf = NULL;
1d94aa36 2329 void *parg = (void *)arg;
069b7479 2330 long err = -EINVAL;
d14e6d76
PO		 2331 bool has_array_args;
2332 size_t array_size = 0;
35ea11ff 2333 void __user *user_ptr = NULL;
d14e6d76 2334 void **kernel_ptr = NULL;
35ea11ff 2335
35ea11ff 2336 /* Copy arguments into temp kernel buffer */
337f9d20 2337 if (_IOC_DIR(cmd) != _IOC_NONE) {
35ea11ff
HV		 2338 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
2339 parg = sbuf;
2340 } else {
2341 /* too big to allocate from stack */
2342 mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
2343 if (NULL == mbuf)
2344 return -ENOMEM;
2345 parg = mbuf;
2346 }
2347
2348 err = -EFAULT;
19c96e4b 2349 if (_IOC_DIR(cmd) & _IOC_WRITE) {
27cd2aba
HV		 2350 unsigned int n = _IOC_SIZE(cmd);
2351
2352 /*
2353 * In some cases, only a few fields are used as input,
2354 * i.e. when the app sets "index" and then the driver
2355 * fills in the rest of the structure for the thing
2356 * with that index. We only need to copy up the first
2357 * non-input field.
2358 */
2359 if (v4l2_is_known_ioctl(cmd)) {
2360 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags;
2361 if (flags & INFO_FL_CLEAR_MASK)
2362 n = (flags & INFO_FL_CLEAR_MASK) >> 16;
2363 }
19c96e4b
TP		 2364
2365 if (copy_from_user(parg, (void __user *)arg, n))
35ea11ff 2366 goto out;
19c96e4b
TP		 2367
2368 /* zero out anything we don't copy from userspace */
2369 if (n < _IOC_SIZE(cmd))
2370 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n);
337f9d20
TP		 2371 } else {
2372 /* read-only ioctl */
2373 memset(parg, 0, _IOC_SIZE(cmd));
19c96e4b 2374 }
35ea11ff
HV		 2375 }
2376
d14e6d76
PO		 2377 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
2378 if (err < 0)
2379 goto out;
2380 has_array_args = err;
35ea11ff 2381
d14e6d76
PO		 2382 if (has_array_args) {
2383 /*
2384 * When adding new types of array args, make sure that the
2385 * parent argument to ioctl (which contains the pointer to the
2386 * array) fits into sbuf (so that mbuf will still remain
2387 * unused up to here).
2388 */
2389 mbuf = kmalloc(array_size, GFP_KERNEL);
2390 err = -ENOMEM;
2391 if (NULL == mbuf)
2392 goto out_array_args;
2393 err = -EFAULT;
2394 if (copy_from_user(mbuf, user_ptr, array_size))
2395 goto out_array_args;
2396 *kernel_ptr = mbuf;
35ea11ff
HV		 2397 }
2398
2399 /* Handles IOCTL */
fc0a8079 2400 err = func(file, cmd, parg);
35ea11ff 2401 if (err == -ENOIOCTLCMD)
02bbb814 2402 err = -ENOTTY;
35ea11ff 2403
d14e6d76
PO		 2404 if (has_array_args) {
2405 *kernel_ptr = user_ptr;
2406 if (copy_to_user(user_ptr, mbuf, array_size))
35ea11ff 2407 err = -EFAULT;
d14e6d76 2408 goto out_array_args;
35ea11ff 2409 }
5d7758ee
HV		 2410 /* VIDIOC_QUERY_DV_TIMINGS can return an error, but still have valid
2411 results that must be returned. */
2412 if (err < 0 && cmd != VIDIOC_QUERY_DV_TIMINGS)
35ea11ff
HV		 2413 goto out;
2414
d14e6d76 2415out_array_args:
35ea11ff
HV		 2416 /* Copy results into user buffer */
2417 switch (_IOC_DIR(cmd)) {
2418 case _IOC_READ:
2419 case (_IOC_WRITE | _IOC_READ):
2420 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
2421 err = -EFAULT;
2422 break;
2423 }
2424
2425out:
2426 kfree(mbuf);
2427 return err;
2428}
fc0a8079
LP		 2429EXPORT_SYMBOL(video_usercopy);
2430
2431long video_ioctl2(struct file *file,
2432 unsigned int cmd, unsigned long arg)
2433{
2434 return video_usercopy(file, cmd, arg, __video_do_ioctl);
2435}
8a522c91 2436EXPORT_SYMBOL(video_ioctl2);
Linux kernel - Deliverables
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