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[media] tuner-core/simple: get_rf_strength can be tuner mode specific
[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);
79b0c640
HV		 632 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER ||
633 p->match.type == V4L2_CHIP_MATCH_SUBDEV_NAME)
27d5a87c
HV		 634 pr_cont("name=%.*s, ",
635 (int)sizeof(p->match.name), p->match.name);
f16f77b0
HV		 636 else
637 pr_cont("addr=%u, ", p->match.addr);
638 pr_cont("chip_ident=%u, revision=0x%x\n",
639 p->ident, p->revision);
640}
641
79b0c640
HV		 642static void v4l_print_dbg_chip_name(const void *arg, bool write_only)
643{
644 const struct v4l2_dbg_chip_name *p = arg;
645
646 pr_cont("type=%u, ", p->match.type);
647 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER ||
648 p->match.type == V4L2_CHIP_MATCH_SUBDEV_NAME)
649 pr_cont("name=%.*s, ",
650 (int)sizeof(p->match.name), p->match.name);
651 else
652 pr_cont("addr=%u, ", p->match.addr);
653 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name);
654}
655
f16f77b0
HV		 656static void v4l_print_dbg_register(const void *arg, bool write_only)
657{
658 const struct v4l2_dbg_register *p = arg;
659
660 pr_cont("type=%u, ", p->match.type);
79b0c640
HV		 661 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER ||
662 p->match.type == V4L2_CHIP_MATCH_SUBDEV_NAME)
27d5a87c
HV		 663 pr_cont("name=%.*s, ",
664 (int)sizeof(p->match.name), p->match.name);
f16f77b0
HV		 665 else
666 pr_cont("addr=%u, ", p->match.addr);
667 pr_cont("reg=0x%llx, val=0x%llx\n",
668 p->reg, p->val);
669}
670
efc626b0 671static void v4l_print_dv_timings(const void *arg, bool write_only)
5d7758ee 672{
efc626b0
HV		 673 const struct v4l2_dv_timings *p = arg;
674
5d7758ee
HV		 675 switch (p->type) {
676 case V4L2_DV_BT_656_1120:
efc626b0
HV		 677 pr_cont("type=bt-656/1120, interlaced=%u, "
678 "pixelclock=%llu, "
679 "width=%u, height=%u, polarities=0x%x, "
680 "hfrontporch=%u, hsync=%u, "
681 "hbackporch=%u, vfrontporch=%u, "
682 "vsync=%u, vbackporch=%u, "
683 "il_vfrontporch=%u, il_vsync=%u, "
684 "il_vbackporch=%u, standards=0x%x, flags=0x%x\n",
5d7758ee
HV		 685 p->bt.interlaced, p->bt.pixelclock,
686 p->bt.width, p->bt.height,
687 p->bt.polarities, p->bt.hfrontporch,
688 p->bt.hsync, p->bt.hbackporch,
689 p->bt.vfrontporch, p->bt.vsync,
690 p->bt.vbackporch, p->bt.il_vfrontporch,
691 p->bt.il_vsync, p->bt.il_vbackporch,
692 p->bt.standards, p->bt.flags);
693 break;
694 default:
efc626b0 695 pr_cont("type=%d\n", p->type);
5d7758ee
HV		 696 break;
697 }
698}
699
efc626b0
HV		 700static void v4l_print_enum_dv_timings(const void *arg, bool write_only)
701{
702 const struct v4l2_enum_dv_timings *p = arg;
703
704 pr_cont("index=%u, ", p->index);
705 v4l_print_dv_timings(&p->timings, write_only);
706}
707
708static void v4l_print_dv_timings_cap(const void *arg, bool write_only)
709{
710 const struct v4l2_dv_timings_cap *p = arg;
711
712 switch (p->type) {
713 case V4L2_DV_BT_656_1120:
714 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, "
715 "pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
716 p->bt.min_width, p->bt.max_width,
717 p->bt.min_height, p->bt.max_height,
718 p->bt.min_pixelclock, p->bt.max_pixelclock,
719 p->bt.standards, p->bt.capabilities);
720 break;
721 default:
722 pr_cont("type=%u\n", p->type);
723 break;
724 }
725}
726
458aa4a6
HV		 727static void v4l_print_frmsizeenum(const void *arg, bool write_only)
728{
729 const struct v4l2_frmsizeenum *p = arg;
730
731 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u",
732 p->index,
733 (p->pixel_format & 0xff),
734 (p->pixel_format >> 8) & 0xff,
735 (p->pixel_format >> 16) & 0xff,
736 (p->pixel_format >> 24) & 0xff,
737 p->type);
738 switch (p->type) {
739 case V4L2_FRMSIZE_TYPE_DISCRETE:
740 pr_cont(" wxh=%ux%u\n",
741 p->discrete.width, p->discrete.height);
742 break;
743 case V4L2_FRMSIZE_TYPE_STEPWISE:
744 pr_cont(" min=%ux%u, max=%ux%u, step=%ux%u\n",
745 p->stepwise.min_width, p->stepwise.min_height,
746 p->stepwise.step_width, p->stepwise.step_height,
747 p->stepwise.max_width, p->stepwise.max_height);
748 break;
749 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
750 /* fall through */
751 default:
752 pr_cont("\n");
753 break;
754 }
755}
756
757static void v4l_print_frmivalenum(const void *arg, bool write_only)
758{
759 const struct v4l2_frmivalenum *p = arg;
760
761 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u",
762 p->index,
763 (p->pixel_format & 0xff),
764 (p->pixel_format >> 8) & 0xff,
765 (p->pixel_format >> 16) & 0xff,
766 (p->pixel_format >> 24) & 0xff,
767 p->width, p->height, p->type);
768 switch (p->type) {
769 case V4L2_FRMIVAL_TYPE_DISCRETE:
770 pr_cont(" fps=%d/%d\n",
771 p->discrete.numerator,
772 p->discrete.denominator);
773 break;
774 case V4L2_FRMIVAL_TYPE_STEPWISE:
775 pr_cont(" min=%d/%d, max=%d/%d, step=%d/%d\n",
776 p->stepwise.min.numerator,
777 p->stepwise.min.denominator,
778 p->stepwise.max.numerator,
779 p->stepwise.max.denominator,
780 p->stepwise.step.numerator,
781 p->stepwise.step.denominator);
782 break;
783 case V4L2_FRMIVAL_TYPE_CONTINUOUS:
784 /* fall through */
785 default:
786 pr_cont("\n");
787 break;
788 }
789}
790
791static void v4l_print_event(const void *arg, bool write_only)
792{
793 const struct v4l2_event *p = arg;
794 const struct v4l2_event_ctrl *c;
795
796 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, "
797 "timestamp=%lu.%9.9lu\n",
798 p->type, p->pending, p->sequence, p->id,
799 p->timestamp.tv_sec, p->timestamp.tv_nsec);
800 switch (p->type) {
801 case V4L2_EVENT_VSYNC:
802 printk(KERN_DEBUG "field=%s\n",
803 prt_names(p->u.vsync.field, v4l2_field_names));
804 break;
805 case V4L2_EVENT_CTRL:
806 c = &p->u.ctrl;
807 printk(KERN_DEBUG "changes=0x%x, type=%u, ",
808 c->changes, c->type);
809 if (c->type == V4L2_CTRL_TYPE_INTEGER64)
810 pr_cont("value64=%lld, ", c->value64);
811 else
812 pr_cont("value=%d, ", c->value);
813 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d,"
814 " default_value=%d\n",
815 c->flags, c->minimum, c->maximum,
816 c->step, c->default_value);
817 break;
818 case V4L2_EVENT_FRAME_SYNC:
819 pr_cont("frame_sequence=%u\n",
820 p->u.frame_sync.frame_sequence);
821 break;
822 }
823}
824
825static void v4l_print_event_subscription(const void *arg, bool write_only)
826{
827 const struct v4l2_event_subscription *p = arg;
828
829 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
830 p->type, p->id, p->flags);
831}
832
833static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only)
834{
835 const struct v4l2_sliced_vbi_cap *p = arg;
836 int i;
837
838 pr_cont("type=%s, service_set=0x%08x\n",
839 prt_names(p->type, v4l2_type_names), p->service_set);
840 for (i = 0; i < 24; i++)
841 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
842 p->service_lines[0][i],
843 p->service_lines[1][i]);
844}
845
82b655bf
HV		 846static void v4l_print_freq_band(const void *arg, bool write_only)
847{
848 const struct v4l2_frequency_band *p = arg;
849
850 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, "
851 "rangelow=%u, rangehigh=%u, modulation=0x%x\n",
852 p->tuner, p->type, p->index,
853 p->capability, p->rangelow,
854 p->rangehigh, p->modulation);
855}
856
efc626b0
HV		 857static void v4l_print_u32(const void *arg, bool write_only)
858{
859 pr_cont("value=%u\n", *(const u32 *)arg);
860}
861
862static void v4l_print_newline(const void *arg, bool write_only)
863{
864 pr_cont("\n");
865}
866
f18d8e07
HV		 867static void v4l_print_default(const void *arg, bool write_only)
868{
869 pr_cont("driver-specific ioctl\n");
870}
871
efbceecd 872static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
35ea11ff
HV		 873{
874 __u32 i;
875
876 /* zero the reserved fields */
877 c->reserved[0] = c->reserved[1] = 0;
6b5a9492 878 for (i = 0; i < c->count; i++)
35ea11ff 879 c->controls[i].reserved2[0] = 0;
6b5a9492 880
35ea11ff
HV		 881 /* V4L2_CID_PRIVATE_BASE cannot be used as control class
882 when using extended controls.
883 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
884 is it allowed for backwards compatibility.
885 */
886 if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE)
887 return 0;
888 /* Check that all controls are from the same control class. */
889 for (i = 0; i < c->count; i++) {
890 if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) {
891 c->error_idx = i;
892 return 0;
893 }
894 }
895 return 1;
896}
897
4b20259f 898static int check_fmt(struct file *file, enum v4l2_buf_type type)
35ea11ff 899{
4b20259f
HV		 900 struct video_device *vfd = video_devdata(file);
901 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
902 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
903 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI;
904 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
905 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
906
a399810c
HV		 907 if (ops == NULL)
908 return -EINVAL;
909
35ea11ff
HV		 910 switch (type) {
911 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f
HV		 912 if (is_vid && is_rx &&
913 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane))
d14e6d76
PO		 914 return 0;
915 break;
916 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 917 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_cap_mplane)
35ea11ff
HV		 918 return 0;
919 break;
920 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 921 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay)
35ea11ff
HV		 922 return 0;
923 break;
924 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f
HV		 925 if (is_vid && is_tx &&
926 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane))
d14e6d76
PO		 927 return 0;
928 break;
929 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 930 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane)
35ea11ff
HV		 931 return 0;
932 break;
933 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 934 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay)
35ea11ff
HV		 935 return 0;
936 break;
937 case V4L2_BUF_TYPE_VBI_CAPTURE:
4b20259f 938 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap)
35ea11ff
HV		 939 return 0;
940 break;
941 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 942 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out)
35ea11ff
HV		 943 return 0;
944 break;
945 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
4b20259f 946 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap)
35ea11ff
HV		 947 return 0;
948 break;
949 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 950 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out)
35ea11ff
HV		 951 return 0;
952 break;
633c98e5 953 default:
35ea11ff
HV		 954 break;
955 }
956 return -EINVAL;
957}
958
59076122
HV		 959static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
960 struct file *file, void *fh, void *arg)
961{
962 struct v4l2_capability *cap = (struct v4l2_capability *)arg;
963
964 cap->version = LINUX_VERSION_CODE;
965 return ops->vidioc_querycap(file, fh, cap);
966}
967
968static int v4l_s_input(const struct v4l2_ioctl_ops *ops,
969 struct file *file, void *fh, void *arg)
970{
971 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg);
972}
973
974static int v4l_s_output(const struct v4l2_ioctl_ops *ops,
975 struct file *file, void *fh, void *arg)
976{
977 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg);
978}
979
d0547cba
HV		 980static int v4l_g_priority(const struct v4l2_ioctl_ops *ops,
981 struct file *file, void *fh, void *arg)
982{
983 struct video_device *vfd;
984 u32 *p = arg;
985
986 if (ops->vidioc_g_priority)
987 return ops->vidioc_g_priority(file, fh, arg);
988 vfd = video_devdata(file);
989 *p = v4l2_prio_max(&vfd->v4l2_dev->prio);
990 return 0;
991}
992
993static int v4l_s_priority(const struct v4l2_ioctl_ops *ops,
994 struct file *file, void *fh, void *arg)
995{
996 struct video_device *vfd;
997 struct v4l2_fh *vfh;
998 u32 *p = arg;
999
1000 if (ops->vidioc_s_priority)
1001 return ops->vidioc_s_priority(file, fh, *p);
1002 vfd = video_devdata(file);
1003 vfh = file->private_data;
1004 return v4l2_prio_change(&vfd->v4l2_dev->prio, &vfh->prio, *p);
1005}
1006
59076122
HV		 1007static int v4l_enuminput(const struct v4l2_ioctl_ops *ops,
1008 struct file *file, void *fh, void *arg)
1009{
73f35418 1010 struct video_device *vfd = video_devdata(file);
59076122
HV		 1011 struct v4l2_input *p = arg;
1012
1013 /*
02fa6282 1014 * We set the flags for CAP_DV_TIMINGS &
59076122
HV		 1015 * CAP_STD here based on ioctl handler provided by the
1016 * driver. If the driver doesn't support these
1017 * for a specific input, it must override these flags.
1018 */
73f35418 1019 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
59076122 1020 p->capabilities |= V4L2_IN_CAP_STD;
59076122
HV		 1021
1022 return ops->vidioc_enum_input(file, fh, p);
1023}
1024
1025static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops,
1026 struct file *file, void *fh, void *arg)
1027{
73f35418 1028 struct video_device *vfd = video_devdata(file);
59076122
HV		 1029 struct v4l2_output *p = arg;
1030
1031 /*
02fa6282 1032 * We set the flags for CAP_DV_TIMINGS &
59076122
HV		 1033 * CAP_STD here based on ioctl handler provided by the
1034 * driver. If the driver doesn't support these
1035 * for a specific output, it must override these flags.
1036 */
73f35418 1037 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
59076122 1038 p->capabilities |= V4L2_OUT_CAP_STD;
59076122
HV		 1039
1040 return ops->vidioc_enum_output(file, fh, p);
1041}
1042
be6c64e4
HV		 1043static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
1044 struct file *file, void *fh, void *arg)
1045{
1046 struct v4l2_fmtdesc *p = arg;
4b20259f
HV		 1047 struct video_device *vfd = video_devdata(file);
1048 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1049 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
be6c64e4
HV		 1050
1051 switch (p->type) {
1052 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1053 if (unlikely(!is_rx || !ops->vidioc_enum_fmt_vid_cap))
be6c64e4
HV		 1054 break;
1055 return ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
1056 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1057 if (unlikely(!is_rx || !ops->vidioc_enum_fmt_vid_cap_mplane))
be6c64e4
HV		 1058 break;
1059 return ops->vidioc_enum_fmt_vid_cap_mplane(file, fh, arg);
1060 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1061 if (unlikely(!is_rx || !ops->vidioc_enum_fmt_vid_overlay))
be6c64e4
HV		 1062 break;
1063 return ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
1064 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1065 if (unlikely(!is_tx || !ops->vidioc_enum_fmt_vid_out))
be6c64e4
HV		 1066 break;
1067 return ops->vidioc_enum_fmt_vid_out(file, fh, arg);
1068 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1069 if (unlikely(!is_tx || !ops->vidioc_enum_fmt_vid_out_mplane))
be6c64e4
HV		 1070 break;
1071 return ops->vidioc_enum_fmt_vid_out_mplane(file, fh, arg);
be6c64e4
HV		 1072 }
1073 return -EINVAL;
1074}
1075
1076static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
1077 struct file *file, void *fh, void *arg)
1078{
1079 struct v4l2_format *p = arg;
4b20259f
HV		 1080 struct video_device *vfd = video_devdata(file);
1081 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1082 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1083 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
be6c64e4
HV		 1084
1085 switch (p->type) {
1086 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1087 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap))
be6c64e4
HV		 1088 break;
1089 return ops->vidioc_g_fmt_vid_cap(file, fh, arg);
1090 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1091 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap_mplane))
be6c64e4
HV		 1092 break;
1093 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
1094 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1095 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_overlay))
be6c64e4
HV		 1096 break;
1097 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
4b20259f
HV		 1098 case V4L2_BUF_TYPE_VBI_CAPTURE:
1099 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_vbi_cap))
1100 break;
1101 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
1102 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1103 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_cap))
1104 break;
1105 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1106 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1107 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out))
be6c64e4
HV		 1108 break;
1109 return ops->vidioc_g_fmt_vid_out(file, fh, arg);
1110 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1111 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_mplane))
be6c64e4
HV		 1112 break;
1113 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
1114 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 1115 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_overlay))
be6c64e4
HV		 1116 break;
1117 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1118 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 1119 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_vbi_out))
be6c64e4
HV		 1120 break;
1121 return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
be6c64e4 1122 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 1123 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_out))
be6c64e4
HV		 1124 break;
1125 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
be6c64e4
HV		 1126 }
1127 return -EINVAL;
1128}
1129
1130static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
1131 struct file *file, void *fh, void *arg)
1132{
1133 struct v4l2_format *p = arg;
4b20259f
HV		 1134 struct video_device *vfd = video_devdata(file);
1135 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1136 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1137 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
be6c64e4
HV		 1138
1139 switch (p->type) {
1140 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1141 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap))
be6c64e4
HV		 1142 break;
1143 CLEAR_AFTER_FIELD(p, fmt.pix);
1144 return ops->vidioc_s_fmt_vid_cap(file, fh, arg);
1145 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1146 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap_mplane))
be6c64e4
HV		 1147 break;
1148 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1149 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
1150 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1151 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_overlay))
be6c64e4
HV		 1152 break;
1153 CLEAR_AFTER_FIELD(p, fmt.win);
1154 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
4b20259f
HV		 1155 case V4L2_BUF_TYPE_VBI_CAPTURE:
1156 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_vbi_cap))
1157 break;
1158 CLEAR_AFTER_FIELD(p, fmt.vbi);
1159 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
1160 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1161 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_cap))
1162 break;
1163 CLEAR_AFTER_FIELD(p, fmt.sliced);
1164 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1165 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1166 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out))
be6c64e4
HV		 1167 break;
1168 CLEAR_AFTER_FIELD(p, fmt.pix);
1169 return ops->vidioc_s_fmt_vid_out(file, fh, arg);
1170 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1171 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_mplane))
be6c64e4
HV		 1172 break;
1173 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1174 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
1175 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 1176 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_overlay))
be6c64e4
HV		 1177 break;
1178 CLEAR_AFTER_FIELD(p, fmt.win);
1179 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1180 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 1181 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_vbi_out))
be6c64e4
HV		 1182 break;
1183 CLEAR_AFTER_FIELD(p, fmt.vbi);
1184 return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
be6c64e4 1185 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 1186 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_out))
be6c64e4
HV		 1187 break;
1188 CLEAR_AFTER_FIELD(p, fmt.sliced);
1189 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
be6c64e4
HV		 1190 }
1191 return -EINVAL;
1192}
1193
1194static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
1195 struct file *file, void *fh, void *arg)
1196{
1197 struct v4l2_format *p = arg;
4b20259f
HV		 1198 struct video_device *vfd = video_devdata(file);
1199 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1200 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1201 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
be6c64e4
HV		 1202
1203 switch (p->type) {
1204 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1205 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap))
be6c64e4
HV		 1206 break;
1207 CLEAR_AFTER_FIELD(p, fmt.pix);
1208 return ops->vidioc_try_fmt_vid_cap(file, fh, arg);
1209 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1210 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap_mplane))
be6c64e4
HV		 1211 break;
1212 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1213 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
1214 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1215 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_overlay))
be6c64e4
HV		 1216 break;
1217 CLEAR_AFTER_FIELD(p, fmt.win);
1218 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
4b20259f
HV		 1219 case V4L2_BUF_TYPE_VBI_CAPTURE:
1220 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_vbi_cap))
1221 break;
1222 CLEAR_AFTER_FIELD(p, fmt.vbi);
1223 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
1224 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1225 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_cap))
1226 break;
1227 CLEAR_AFTER_FIELD(p, fmt.sliced);
1228 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1229 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1230 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out))
be6c64e4
HV		 1231 break;
1232 CLEAR_AFTER_FIELD(p, fmt.pix);
1233 return ops->vidioc_try_fmt_vid_out(file, fh, arg);
1234 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1235 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_mplane))
be6c64e4
HV		 1236 break;
1237 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1238 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
1239 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 1240 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_overlay))
be6c64e4
HV		 1241 break;
1242 CLEAR_AFTER_FIELD(p, fmt.win);
1243 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1244 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 1245 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_vbi_out))
be6c64e4
HV		 1246 break;
1247 CLEAR_AFTER_FIELD(p, fmt.vbi);
1248 return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
be6c64e4 1249 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 1250 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_out))
be6c64e4
HV		 1251 break;
1252 CLEAR_AFTER_FIELD(p, fmt.sliced);
1253 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
be6c64e4
HV		 1254 }
1255 return -EINVAL;
1256}
1257
e325b244
HV		 1258static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
1259 struct file *file, void *fh, void *arg)
1260{
1261 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
1262}
1263
1264static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
1265 struct file *file, void *fh, void *arg)
1266{
1267 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
1268}
1269
4b1e2e4d
HV		 1270static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,
1271 struct file *file, void *fh, void *arg)
1272{
1273 struct video_device *vfd = video_devdata(file);
1274 struct v4l2_tuner *p = arg;
82b655bf 1275 int err;
4b1e2e4d
HV		 1276
1277 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1278 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
82b655bf
HV		 1279 err = ops->vidioc_g_tuner(file, fh, p);
1280 if (!err)
1281 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1282 return err;
4b1e2e4d
HV		 1283}
1284
1285static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
1286 struct file *file, void *fh, void *arg)
1287{
1288 struct video_device *vfd = video_devdata(file);
1289 struct v4l2_tuner *p = arg;
1290
1291 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1292 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1293 return ops->vidioc_s_tuner(file, fh, p);
1294}
1295
82b655bf
HV		 1296static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,
1297 struct file *file, void *fh, void *arg)
1298{
1299 struct v4l2_modulator *p = arg;
1300 int err;
1301
1302 err = ops->vidioc_g_modulator(file, fh, p);
1303 if (!err)
1304 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1305 return err;
1306}
1307
4b1e2e4d
HV		 1308static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
1309 struct file *file, void *fh, void *arg)
1310{
1311 struct video_device *vfd = video_devdata(file);
1312 struct v4l2_frequency *p = arg;
1313
1314 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1315 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1316 return ops->vidioc_g_frequency(file, fh, p);
1317}
1318
1319static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
1320 struct file *file, void *fh, void *arg)
1321{
1322 struct video_device *vfd = video_devdata(file);
b530a447 1323 const struct v4l2_frequency *p = arg;
4b1e2e4d
HV		 1324 enum v4l2_tuner_type type;
1325
1326 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1327 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1328 if (p->type != type)
1329 return -EINVAL;
1330 return ops->vidioc_s_frequency(file, fh, p);
1331}
1332
1333static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
1334 struct file *file, void *fh, void *arg)
1335{
1336 struct video_device *vfd = video_devdata(file);
1337 struct v4l2_standard *p = arg;
1338 v4l2_std_id id = vfd->tvnorms, curr_id = 0;
1339 unsigned int index = p->index, i, j = 0;
1340 const char *descr = "";
1341
a5338190
HV		 1342 /* Return -ENODATA if the tvnorms for the current input
1343 or output is 0, meaning that it doesn't support this API. */
1344 if (id == 0)
1345 return -ENODATA;
1346
4b1e2e4d
HV		 1347 /* Return norm array in a canonical way */
1348 for (i = 0; i <= index && id; i++) {
1349 /* last std value in the standards array is 0, so this
1350 while always ends there since (id & 0) == 0. */
1351 while ((id & standards[j].std) != standards[j].std)
1352 j++;
1353 curr_id = standards[j].std;
1354 descr = standards[j].descr;
1355 j++;
1356 if (curr_id == 0)
1357 break;
1358 if (curr_id != V4L2_STD_PAL &&
1359 curr_id != V4L2_STD_SECAM &&
1360 curr_id != V4L2_STD_NTSC)
1361 id &= ~curr_id;
1362 }
1363 if (i <= index)
1364 return -EINVAL;
1365
1366 v4l2_video_std_construct(p, curr_id, descr);
1367 return 0;
1368}
1369
1370static int v4l_g_std(const struct v4l2_ioctl_ops *ops,
1371 struct file *file, void *fh, void *arg)
1372{
1373 struct video_device *vfd = video_devdata(file);
1374 v4l2_std_id *id = arg;
1375
1376 /* Calls the specific handler */
1377 if (ops->vidioc_g_std)
1378 return ops->vidioc_g_std(file, fh, arg);
1379 if (vfd->current_norm) {
1380 *id = vfd->current_norm;
1381 return 0;
1382 }
1383 return -ENOTTY;
1384}
1385
1386static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
1387 struct file *file, void *fh, void *arg)
1388{
1389 struct video_device *vfd = video_devdata(file);
314527ac 1390 v4l2_std_id id = *(v4l2_std_id *)arg, norm;
4b1e2e4d
HV		 1391 int ret;
1392
314527ac 1393 norm = id & vfd->tvnorms;
4b1e2e4d
HV		 1394 if (vfd->tvnorms && !norm) /* Check if std is supported */
1395 return -EINVAL;
1396
1397 /* Calls the specific handler */
314527ac 1398 ret = ops->vidioc_s_std(file, fh, norm);
4b1e2e4d
HV		 1399
1400 /* Updates standard information */
1401 if (ret >= 0)
1402 vfd->current_norm = norm;
1403 return ret;
1404}
1405
1406static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
1407 struct file *file, void *fh, void *arg)
1408{
1409 struct video_device *vfd = video_devdata(file);
1410 v4l2_std_id *p = arg;
1411
1412 /*
1413 * If nothing detected, it should return all supported
1414 * standard.
1415 * Drivers just need to mask the std argument, in order
1416 * to remove the standards that don't apply from the mask.
1417 * This means that tuners, audio and video decoders can join
1418 * their efforts to improve the standards detection.
1419 */
1420 *p = vfd->tvnorms;
1421 return ops->vidioc_querystd(file, fh, arg);
1422}
1423
1424static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
1425 struct file *file, void *fh, void *arg)
1426{
1427 struct video_device *vfd = video_devdata(file);
1428 struct v4l2_hw_freq_seek *p = arg;
1429 enum v4l2_tuner_type type;
1430
1431 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1432 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1433 if (p->type != type)
1434 return -EINVAL;
1435 return ops->vidioc_s_hw_freq_seek(file, fh, p);
1436}
1437
737c097b
HV		 1438static int v4l_overlay(const struct v4l2_ioctl_ops *ops,
1439 struct file *file, void *fh, void *arg)
1440{
1441 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg);
1442}
1443
eb3728ed
HV		 1444static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,
1445 struct file *file, void *fh, void *arg)
1446{
1447 struct v4l2_requestbuffers *p = arg;
4b20259f 1448 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1449
1450 if (ret)
1451 return ret;
1452
633c98e5 1453 CLEAR_AFTER_FIELD(p, memory);
eb3728ed
HV		 1454
1455 return ops->vidioc_reqbufs(file, fh, p);
1456}
1457
1458static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,
1459 struct file *file, void *fh, void *arg)
1460{
1461 struct v4l2_buffer *p = arg;
4b20259f 1462 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1463
1464 return ret ? ret : ops->vidioc_querybuf(file, fh, p);
1465}
1466
1467static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,
1468 struct file *file, void *fh, void *arg)
1469{
1470 struct v4l2_buffer *p = arg;
4b20259f 1471 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1472
1473 return ret ? ret : ops->vidioc_qbuf(file, fh, p);
1474}
1475
1476static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,
1477 struct file *file, void *fh, void *arg)
1478{
1479 struct v4l2_buffer *p = arg;
4b20259f 1480 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1481
1482 return ret ? ret : ops->vidioc_dqbuf(file, fh, p);
1483}
1484
1485static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
1486 struct file *file, void *fh, void *arg)
1487{
1488 struct v4l2_create_buffers *create = arg;
4b20259f 1489 int ret = check_fmt(file, create->format.type);
eb3728ed
HV		 1490
1491 return ret ? ret : ops->vidioc_create_bufs(file, fh, create);
1492}
1493
1494static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
1495 struct file *file, void *fh, void *arg)
1496{
1497 struct v4l2_buffer *b = arg;
4b20259f 1498 int ret = check_fmt(file, b->type);
eb3728ed
HV		 1499
1500 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
1501}
1502
1503static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
1504 struct file *file, void *fh, void *arg)
1505{
1506 struct video_device *vfd = video_devdata(file);
1507 struct v4l2_streamparm *p = arg;
1508 v4l2_std_id std;
4b20259f 1509 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1510
1511 if (ret)
1512 return ret;
1513 if (ops->vidioc_g_parm)
1514 return ops->vidioc_g_parm(file, fh, p);
1515 std = vfd->current_norm;
1516 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1517 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1518 return -EINVAL;
1519 p->parm.capture.readbuffers = 2;
73f35418 1520 if (is_valid_ioctl(vfd, VIDIOC_G_STD) && ops->vidioc_g_std)
eb3728ed
HV		 1521 ret = ops->vidioc_g_std(file, fh, &std);
1522 if (ret == 0)
1523 v4l2_video_std_frame_period(std,
1524 &p->parm.capture.timeperframe);
1525 return ret;
1526}
1527
1528static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
1529 struct file *file, void *fh, void *arg)
1530{
1531 struct v4l2_streamparm *p = arg;
4b20259f 1532 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1533
1534 return ret ? ret : ops->vidioc_s_parm(file, fh, p);
1535}
1536
efbceecd
HV		 1537static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,
1538 struct file *file, void *fh, void *arg)
1539{
1540 struct video_device *vfd = video_devdata(file);
1541 struct v4l2_queryctrl *p = arg;
7a3ed2d9
HV		 1542 struct v4l2_fh *vfh =
1543 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1544
1545 if (vfh && vfh->ctrl_handler)
1546 return v4l2_queryctrl(vfh->ctrl_handler, p);
1547 if (vfd->ctrl_handler)
1548 return v4l2_queryctrl(vfd->ctrl_handler, p);
1549 if (ops->vidioc_queryctrl)
1550 return ops->vidioc_queryctrl(file, fh, p);
1551 return -ENOTTY;
1552}
1553
1554static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,
1555 struct file *file, void *fh, void *arg)
1556{
1557 struct video_device *vfd = video_devdata(file);
1558 struct v4l2_querymenu *p = arg;
7a3ed2d9
HV		 1559 struct v4l2_fh *vfh =
1560 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1561
1562 if (vfh && vfh->ctrl_handler)
1563 return v4l2_querymenu(vfh->ctrl_handler, p);
1564 if (vfd->ctrl_handler)
1565 return v4l2_querymenu(vfd->ctrl_handler, p);
1566 if (ops->vidioc_querymenu)
1567 return ops->vidioc_querymenu(file, fh, p);
1568 return -ENOTTY;
1569}
1570
1571static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops,
1572 struct file *file, void *fh, void *arg)
1573{
1574 struct video_device *vfd = video_devdata(file);
1575 struct v4l2_control *p = arg;
7a3ed2d9
HV		 1576 struct v4l2_fh *vfh =
1577 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1578 struct v4l2_ext_controls ctrls;
1579 struct v4l2_ext_control ctrl;
1580
1581 if (vfh && vfh->ctrl_handler)
1582 return v4l2_g_ctrl(vfh->ctrl_handler, p);
1583 if (vfd->ctrl_handler)
1584 return v4l2_g_ctrl(vfd->ctrl_handler, p);
1585 if (ops->vidioc_g_ctrl)
1586 return ops->vidioc_g_ctrl(file, fh, p);
1587 if (ops->vidioc_g_ext_ctrls == NULL)
1588 return -ENOTTY;
1589
1590 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1591 ctrls.count = 1;
1592 ctrls.controls = &ctrl;
1593 ctrl.id = p->id;
1594 ctrl.value = p->value;
1595 if (check_ext_ctrls(&ctrls, 1)) {
1596 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
1597
1598 if (ret == 0)
1599 p->value = ctrl.value;
1600 return ret;
1601 }
1602 return -EINVAL;
1603}
1604
1605static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,
1606 struct file *file, void *fh, void *arg)
1607{
1608 struct video_device *vfd = video_devdata(file);
1609 struct v4l2_control *p = arg;
7a3ed2d9
HV		 1610 struct v4l2_fh *vfh =
1611 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1612 struct v4l2_ext_controls ctrls;
1613 struct v4l2_ext_control ctrl;
1614
1615 if (vfh && vfh->ctrl_handler)
1616 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
1617 if (vfd->ctrl_handler)
1618 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
1619 if (ops->vidioc_s_ctrl)
1620 return ops->vidioc_s_ctrl(file, fh, p);
1621 if (ops->vidioc_s_ext_ctrls == NULL)
1622 return -ENOTTY;
1623
1624 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1625 ctrls.count = 1;
1626 ctrls.controls = &ctrl;
1627 ctrl.id = p->id;
1628 ctrl.value = p->value;
1629 if (check_ext_ctrls(&ctrls, 1))
1630 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
1631 return -EINVAL;
1632}
1633
1634static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1635 struct file *file, void *fh, void *arg)
1636{
1637 struct video_device *vfd = video_devdata(file);
1638 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 1639 struct v4l2_fh *vfh =
1640 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1641
1642 p->error_idx = p->count;
1643 if (vfh && vfh->ctrl_handler)
1644 return v4l2_g_ext_ctrls(vfh->ctrl_handler, p);
1645 if (vfd->ctrl_handler)
1646 return v4l2_g_ext_ctrls(vfd->ctrl_handler, p);
1647 if (ops->vidioc_g_ext_ctrls == NULL)
1648 return -ENOTTY;
1649 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :
1650 -EINVAL;
1651}
1652
1653static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1654 struct file *file, void *fh, void *arg)
1655{
1656 struct video_device *vfd = video_devdata(file);
1657 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 1658 struct v4l2_fh *vfh =
1659 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1660
1661 p->error_idx = p->count;
1662 if (vfh && vfh->ctrl_handler)
1663 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, p);
1664 if (vfd->ctrl_handler)
1665 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, p);
1666 if (ops->vidioc_s_ext_ctrls == NULL)
1667 return -ENOTTY;
1668 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :
1669 -EINVAL;
1670}
1671
1672static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1673 struct file *file, void *fh, void *arg)
1674{
1675 struct video_device *vfd = video_devdata(file);
1676 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 1677 struct v4l2_fh *vfh =
1678 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1679
1680 p->error_idx = p->count;
1681 if (vfh && vfh->ctrl_handler)
1682 return v4l2_try_ext_ctrls(vfh->ctrl_handler, p);
1683 if (vfd->ctrl_handler)
1684 return v4l2_try_ext_ctrls(vfd->ctrl_handler, p);
1685 if (ops->vidioc_try_ext_ctrls == NULL)
1686 return -ENOTTY;
1687 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :
1688 -EINVAL;
1689}
1690
d84f2d94
HV		 1691static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
1692 struct file *file, void *fh, void *arg)
1693{
1694 struct v4l2_crop *p = arg;
1695 struct v4l2_selection s = {
1696 .type = p->type,
1697 };
1698 int ret;
1699
1700 if (ops->vidioc_g_crop)
1701 return ops->vidioc_g_crop(file, fh, p);
1702 /* simulate capture crop using selection api */
1703
1704 /* crop means compose for output devices */
1705 if (V4L2_TYPE_IS_OUTPUT(p->type))
1706 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
1707 else
1708 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
1709
1710 ret = ops->vidioc_g_selection(file, fh, &s);
1711
1712 /* copying results to old structure on success */
1713 if (!ret)
1714 p->c = s.r;
1715 return ret;
1716}
1717
1718static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
1719 struct file *file, void *fh, void *arg)
1720{
1721 struct v4l2_crop *p = arg;
1722 struct v4l2_selection s = {
1723 .type = p->type,
1724 .r = p->c,
1725 };
1726
1727 if (ops->vidioc_s_crop)
1728 return ops->vidioc_s_crop(file, fh, p);
1729 /* simulate capture crop using selection api */
1730
1731 /* crop means compose for output devices */
1732 if (V4L2_TYPE_IS_OUTPUT(p->type))
1733 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
1734 else
1735 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
1736
1737 return ops->vidioc_s_selection(file, fh, &s);
1738}
1739
1740static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
1741 struct file *file, void *fh, void *arg)
1742{
1743 struct v4l2_cropcap *p = arg;
1744 struct v4l2_selection s = { .type = p->type };
1745 int ret;
1746
1747 if (ops->vidioc_cropcap)
1748 return ops->vidioc_cropcap(file, fh, p);
1749
1750 /* obtaining bounds */
1751 if (V4L2_TYPE_IS_OUTPUT(p->type))
1752 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
1753 else
1754 s.target = V4L2_SEL_TGT_CROP_BOUNDS;
1755
1756 ret = ops->vidioc_g_selection(file, fh, &s);
1757 if (ret)
1758 return ret;
1759 p->bounds = s.r;
1760
1761 /* obtaining defrect */
1762 if (V4L2_TYPE_IS_OUTPUT(p->type))
1763 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
1764 else
1765 s.target = V4L2_SEL_TGT_CROP_DEFAULT;
1766
1767 ret = ops->vidioc_g_selection(file, fh, &s);
1768 if (ret)
1769 return ret;
1770 p->defrect = s.r;
1771
1772 /* setting trivial pixelaspect */
1773 p->pixelaspect.numerator = 1;
1774 p->pixelaspect.denominator = 1;
1775 return 0;
1776}
1777
f16f77b0
HV		 1778static int v4l_log_status(const struct v4l2_ioctl_ops *ops,
1779 struct file *file, void *fh, void *arg)
1780{
1781 struct video_device *vfd = video_devdata(file);
1782 int ret;
1783
1784 if (vfd->v4l2_dev)
1785 pr_info("%s: ================= START STATUS =================\n",
1786 vfd->v4l2_dev->name);
1787 ret = ops->vidioc_log_status(file, fh);
1788 if (vfd->v4l2_dev)
1789 pr_info("%s: ================== END STATUS ==================\n",
1790 vfd->v4l2_dev->name);
1791 return ret;
1792}
1793
79b0c640
HV		 1794static bool v4l_dbg_found_match(const struct v4l2_dbg_match *match,
1795 struct v4l2_subdev *sd, int idx)
1796{
1797 if (match->type == V4L2_CHIP_MATCH_SUBDEV_IDX)
1798 return match->addr == idx;
1799 return !strcmp(match->name, sd->name);
1800}
1801
f16f77b0
HV		 1802static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
1803 struct file *file, void *fh, void *arg)
1804{
1805#ifdef CONFIG_VIDEO_ADV_DEBUG
1806 struct v4l2_dbg_register *p = arg;
79b0c640
HV		 1807 struct video_device *vfd = video_devdata(file);
1808 struct v4l2_subdev *sd;
1809 int idx = 0;
f16f77b0
HV		 1810
1811 if (!capable(CAP_SYS_ADMIN))
1812 return -EPERM;
79b0c640
HV		 1813 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV_IDX ||
1814 p->match.type == V4L2_CHIP_MATCH_SUBDEV_NAME) {
1815 if (vfd->v4l2_dev == NULL)
1816 return -EINVAL;
1817 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {
1818 if (v4l_dbg_found_match(&p->match, sd, idx++))
1819 return v4l2_subdev_call(sd, core, g_register, p);
1820 }
1821 return -EINVAL;
1822 }
1823 if (ops->vidioc_g_register)
1824 return ops->vidioc_g_register(file, fh, p);
1825 return -EINVAL;
f16f77b0
HV		 1826#else
1827 return -ENOTTY;
1828#endif
1829}
1830
1831static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
1832 struct file *file, void *fh, void *arg)
1833{
1834#ifdef CONFIG_VIDEO_ADV_DEBUG
977ba3b1 1835 const struct v4l2_dbg_register *p = arg;
79b0c640
HV		 1836 struct video_device *vfd = video_devdata(file);
1837 struct v4l2_subdev *sd;
1838 int idx = 0;
f16f77b0
HV		 1839
1840 if (!capable(CAP_SYS_ADMIN))
1841 return -EPERM;
79b0c640
HV		 1842 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV_IDX ||
1843 p->match.type == V4L2_CHIP_MATCH_SUBDEV_NAME) {
1844 if (vfd->v4l2_dev == NULL)
1845 return -EINVAL;
1846 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {
1847 if (v4l_dbg_found_match(&p->match, sd, idx++))
1848 return v4l2_subdev_call(sd, core, s_register, p);
1849 }
1850 return -EINVAL;
1851 }
1852 if (ops->vidioc_s_register)
1853 return ops->vidioc_s_register(file, fh, p);
1854 return -EINVAL;
f16f77b0
HV		 1855#else
1856 return -ENOTTY;
1857#endif
1858}
1859
1860static int v4l_dbg_g_chip_ident(const struct v4l2_ioctl_ops *ops,
1861 struct file *file, void *fh, void *arg)
1862{
1863 struct v4l2_dbg_chip_ident *p = arg;
1864
1865 p->ident = V4L2_IDENT_NONE;
1866 p->revision = 0;
79b0c640
HV		 1867 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV_NAME ||
1868 p->match.type == V4L2_CHIP_MATCH_SUBDEV_IDX)
1869 return -EINVAL;
f16f77b0
HV		 1870 return ops->vidioc_g_chip_ident(file, fh, p);
1871}
1872
79b0c640
HV		 1873static int v4l_dbg_g_chip_name(const struct v4l2_ioctl_ops *ops,
1874 struct file *file, void *fh, void *arg)
1875{
1876 struct video_device *vfd = video_devdata(file);
1877 struct v4l2_dbg_chip_name *p = arg;
1878 struct v4l2_subdev *sd;
1879 int idx = 0;
1880
1881 switch (p->match.type) {
1882 case V4L2_CHIP_MATCH_BRIDGE:
1883#ifdef CONFIG_VIDEO_ADV_DEBUG
1884 if (ops->vidioc_s_register)
1885 p->flags |= V4L2_CHIP_FL_WRITABLE;
1886 if (ops->vidioc_g_register)
1887 p->flags |= V4L2_CHIP_FL_READABLE;
1888#endif
1889 if (ops->vidioc_g_chip_name)
1890 return ops->vidioc_g_chip_name(file, fh, arg);
1891 if (p->match.addr)
1892 return -EINVAL;
1893 if (vfd->v4l2_dev)
1894 strlcpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));
1895 else if (vfd->parent)
1896 strlcpy(p->name, vfd->parent->driver->name, sizeof(p->name));
1897 else
1898 strlcpy(p->name, "bridge", sizeof(p->name));
1899 return 0;
1900
1901 case V4L2_CHIP_MATCH_SUBDEV_IDX:
1902 case V4L2_CHIP_MATCH_SUBDEV_NAME:
1903 if (vfd->v4l2_dev == NULL)
1904 break;
1905 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {
1906 if (v4l_dbg_found_match(&p->match, sd, idx++)) {
1907#ifdef CONFIG_VIDEO_ADV_DEBUG
1908 if (sd->ops->core && sd->ops->core->s_register)
1909 p->flags |= V4L2_CHIP_FL_WRITABLE;
1910 if (sd->ops->core && sd->ops->core->g_register)
1911 p->flags |= V4L2_CHIP_FL_READABLE;
1912#endif
1913 strlcpy(p->name, sd->name, sizeof(p->name));
1914 return 0;
1915 }
1916 }
1917 break;
1918 }
1919 return -EINVAL;
1920}
1921
458aa4a6
HV		 1922static int v4l_dqevent(const struct v4l2_ioctl_ops *ops,
1923 struct file *file, void *fh, void *arg)
1924{
1925 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK);
1926}
1927
1928static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,
1929 struct file *file, void *fh, void *arg)
1930{
1931 return ops->vidioc_subscribe_event(fh, arg);
1932}
1933
1934static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,
1935 struct file *file, void *fh, void *arg)
1936{
1937 return ops->vidioc_unsubscribe_event(fh, arg);
1938}
1939
1940static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,
1941 struct file *file, void *fh, void *arg)
1942{
1943 struct v4l2_sliced_vbi_cap *p = arg;
4b20259f
HV		 1944 int ret = check_fmt(file, p->type);
1945
1946 if (ret)
1947 return ret;
458aa4a6
HV		 1948
1949 /* Clear up to type, everything after type is zeroed already */
1950 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
1951
1952 return ops->vidioc_g_sliced_vbi_cap(file, fh, p);
1953}
1954
82b655bf
HV		 1955static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
1956 struct file *file, void *fh, void *arg)
1957{
1958 struct video_device *vfd = video_devdata(file);
1959 struct v4l2_frequency_band *p = arg;
1960 enum v4l2_tuner_type type;
1961 int err;
1962
1963 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1964 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1965
1966 if (type != p->type)
1967 return -EINVAL;
1968 if (ops->vidioc_enum_freq_bands)
1969 return ops->vidioc_enum_freq_bands(file, fh, p);
73f35418 1970 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) {
82b655bf
HV		 1971 struct v4l2_tuner t = {
1972 .index = p->tuner,
1973 .type = type,
1974 };
1975
aa4d9b53
HV		 1976 if (p->index)
1977 return -EINVAL;
82b655bf
HV		 1978 err = ops->vidioc_g_tuner(file, fh, &t);
1979 if (err)
1980 return err;
1981 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;
1982 p->rangelow = t.rangelow;
1983 p->rangehigh = t.rangehigh;
1984 p->modulation = (type == V4L2_TUNER_RADIO) ?
1985 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
1986 return 0;
1987 }
73f35418 1988 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) {
82b655bf
HV		 1989 struct v4l2_modulator m = {
1990 .index = p->tuner,
1991 };
1992
1993 if (type != V4L2_TUNER_RADIO)
1994 return -EINVAL;
aa4d9b53
HV		 1995 if (p->index)
1996 return -EINVAL;
82b655bf
HV		 1997 err = ops->vidioc_g_modulator(file, fh, &m);
1998 if (err)
1999 return err;
2000 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2001 p->rangelow = m.rangelow;
2002 p->rangehigh = m.rangehigh;
2003 p->modulation = (type == V4L2_TUNER_RADIO) ?
2004 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2005 return 0;
2006 }
2007 return -ENOTTY;
2008}
2009
4839e6c2
HV		 2010struct v4l2_ioctl_info {
2011 unsigned int ioctl;
27cd2aba 2012 u32 flags;
4839e6c2 2013 const char * const name;
86748f35
HV		 2014 union {
2015 u32 offset;
2016 int (*func)(const struct v4l2_ioctl_ops *ops,
2017 struct file *file, void *fh, void *p);
26ddcbcc 2018 } u;
86748f35 2019 void (*debug)(const void *arg, bool write_only);
4839e6c2
HV		 2020};
2021
2022/* This control needs a priority check */
2023#define INFO_FL_PRIO (1 << 0)
2024/* This control can be valid if the filehandle passes a control handler. */
2025#define INFO_FL_CTRL (1 << 1)
86748f35
HV		 2026/* This is a standard ioctl, no need for special code */
2027#define INFO_FL_STD (1 << 2)
2028/* This is ioctl has its own function */
2029#define INFO_FL_FUNC (1 << 3)
5a5adf6b
HV		 2030/* Queuing ioctl */
2031#define INFO_FL_QUEUE (1 << 4)
27cd2aba
HV		 2032/* Zero struct from after the field to the end */
2033#define INFO_FL_CLEAR(v4l2_struct, field) \
2034 ((offsetof(struct v4l2_struct, field) + \
2035 sizeof(((struct v4l2_struct *)0)->field)) << 16)
2036#define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
4839e6c2 2037
86748f35
HV		 2038#define IOCTL_INFO_STD(_ioctl, _vidioc, _debug, _flags) \
2039 [_IOC_NR(_ioctl)] = { \
2040 .ioctl = _ioctl, \
2041 .flags = _flags | INFO_FL_STD, \
2042 .name = #_ioctl, \
26ddcbcc 2043 .u.offset = offsetof(struct v4l2_ioctl_ops, _vidioc), \
86748f35
HV		 2044 .debug = _debug, \
2045 }
2046
2047#define IOCTL_INFO_FNC(_ioctl, _func, _debug, _flags) \
2048 [_IOC_NR(_ioctl)] = { \
2049 .ioctl = _ioctl, \
2050 .flags = _flags | INFO_FL_FUNC, \
2051 .name = #_ioctl, \
26ddcbcc 2052 .u.func = _func, \
86748f35
HV		 2053 .debug = _debug, \
2054 }
2055
4839e6c2 2056static struct v4l2_ioctl_info v4l2_ioctls[] = {
59076122 2057 IOCTL_INFO_FNC(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
be6c64e4
HV		 2058 IOCTL_INFO_FNC(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)),
2059 IOCTL_INFO_FNC(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, INFO_FL_CLEAR(v4l2_format, type)),
2060 IOCTL_INFO_FNC(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
5a5adf6b
HV		 2061 IOCTL_INFO_FNC(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2062 IOCTL_INFO_FNC(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
be6c64e4
HV		 2063 IOCTL_INFO_STD(VIDIOC_G_FBUF, vidioc_g_fbuf, v4l_print_framebuffer, 0),
2064 IOCTL_INFO_STD(VIDIOC_S_FBUF, vidioc_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
737c097b 2065 IOCTL_INFO_FNC(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO),
5a5adf6b 2066 IOCTL_INFO_FNC(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),
b799d09a 2067 IOCTL_INFO_STD(VIDIOC_EXPBUF, vidioc_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)),
5a5adf6b
HV		 2068 IOCTL_INFO_FNC(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),
2069 IOCTL_INFO_FNC(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2070 IOCTL_INFO_FNC(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
eb3728ed
HV		 2071 IOCTL_INFO_FNC(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
2072 IOCTL_INFO_FNC(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
4b1e2e4d
HV		 2073 IOCTL_INFO_FNC(VIDIOC_G_STD, v4l_g_std, v4l_print_std, 0),
2074 IOCTL_INFO_FNC(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
2075 IOCTL_INFO_FNC(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
59076122 2076 IOCTL_INFO_FNC(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
efbceecd
HV		 2077 IOCTL_INFO_FNC(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
2078 IOCTL_INFO_FNC(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
4b1e2e4d
HV		 2079 IOCTL_INFO_FNC(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
2080 IOCTL_INFO_FNC(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
59076122
HV		 2081 IOCTL_INFO_STD(VIDIOC_G_AUDIO, vidioc_g_audio, v4l_print_audio, 0),
2082 IOCTL_INFO_STD(VIDIOC_S_AUDIO, vidioc_s_audio, v4l_print_audio, INFO_FL_PRIO),
efbceecd
HV		 2083 IOCTL_INFO_FNC(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
2084 IOCTL_INFO_FNC(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
59076122
HV		 2085 IOCTL_INFO_STD(VIDIOC_G_INPUT, vidioc_g_input, v4l_print_u32, 0),
2086 IOCTL_INFO_FNC(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
2087 IOCTL_INFO_STD(VIDIOC_G_OUTPUT, vidioc_g_output, v4l_print_u32, 0),
2088 IOCTL_INFO_FNC(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
2089 IOCTL_INFO_FNC(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
2090 IOCTL_INFO_STD(VIDIOC_G_AUDOUT, vidioc_g_audout, v4l_print_audioout, 0),
2091 IOCTL_INFO_STD(VIDIOC_S_AUDOUT, vidioc_s_audout, v4l_print_audioout, INFO_FL_PRIO),
82b655bf 2092 IOCTL_INFO_FNC(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
4b1e2e4d
HV		 2093 IOCTL_INFO_STD(VIDIOC_S_MODULATOR, vidioc_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
2094 IOCTL_INFO_FNC(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
2095 IOCTL_INFO_FNC(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
d84f2d94
HV		 2096 IOCTL_INFO_FNC(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
2097 IOCTL_INFO_FNC(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
2098 IOCTL_INFO_FNC(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
2099 IOCTL_INFO_STD(VIDIOC_G_SELECTION, vidioc_g_selection, v4l_print_selection, 0),
2100 IOCTL_INFO_STD(VIDIOC_S_SELECTION, vidioc_s_selection, v4l_print_selection, INFO_FL_PRIO),
d806f2df
HV		 2101 IOCTL_INFO_STD(VIDIOC_G_JPEGCOMP, vidioc_g_jpegcomp, v4l_print_jpegcompression, 0),
2102 IOCTL_INFO_STD(VIDIOC_S_JPEGCOMP, vidioc_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
4b1e2e4d 2103 IOCTL_INFO_FNC(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
be6c64e4 2104 IOCTL_INFO_FNC(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
59076122
HV		 2105 IOCTL_INFO_STD(VIDIOC_ENUMAUDIO, vidioc_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
2106 IOCTL_INFO_STD(VIDIOC_ENUMAUDOUT, vidioc_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
d0547cba
HV		 2107 IOCTL_INFO_FNC(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
2108 IOCTL_INFO_FNC(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
458aa4a6 2109 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 2110 IOCTL_INFO_FNC(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
efbceecd
HV		 2111 IOCTL_INFO_FNC(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2112 IOCTL_INFO_FNC(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL),
9bc31633 2113 IOCTL_INFO_FNC(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
458aa4a6
HV		 2114 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMESIZES, vidioc_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
2115 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMEINTERVALS, vidioc_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
d806f2df
HV		 2116 IOCTL_INFO_STD(VIDIOC_G_ENC_INDEX, vidioc_g_enc_index, v4l_print_enc_idx, 0),
2117 IOCTL_INFO_STD(VIDIOC_ENCODER_CMD, vidioc_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2118 IOCTL_INFO_STD(VIDIOC_TRY_ENCODER_CMD, vidioc_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2119 IOCTL_INFO_STD(VIDIOC_DECODER_CMD, vidioc_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
2120 IOCTL_INFO_STD(VIDIOC_TRY_DECODER_CMD, vidioc_try_decoder_cmd, v4l_print_decoder_cmd, 0),
f16f77b0
HV		 2121 IOCTL_INFO_FNC(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
2122 IOCTL_INFO_FNC(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
2123 IOCTL_INFO_FNC(VIDIOC_DBG_G_CHIP_IDENT, v4l_dbg_g_chip_ident, v4l_print_dbg_chip_ident, 0),
4b1e2e4d 2124 IOCTL_INFO_FNC(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
efc626b0
HV		 2125 IOCTL_INFO_STD(VIDIOC_S_DV_TIMINGS, vidioc_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO),
2126 IOCTL_INFO_STD(VIDIOC_G_DV_TIMINGS, vidioc_g_dv_timings, v4l_print_dv_timings, 0),
458aa4a6
HV		 2127 IOCTL_INFO_FNC(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
2128 IOCTL_INFO_FNC(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
2129 IOCTL_INFO_FNC(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
5a5adf6b
HV		 2130 IOCTL_INFO_FNC(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2131 IOCTL_INFO_FNC(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
efc626b0
HV		 2132 IOCTL_INFO_STD(VIDIOC_ENUM_DV_TIMINGS, vidioc_enum_dv_timings, v4l_print_enum_dv_timings, 0),
2133 IOCTL_INFO_STD(VIDIOC_QUERY_DV_TIMINGS, vidioc_query_dv_timings, v4l_print_dv_timings, 0),
a1acb8f9 2134 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 2135 IOCTL_INFO_FNC(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
79b0c640 2136 IOCTL_INFO_FNC(VIDIOC_DBG_G_CHIP_NAME, v4l_dbg_g_chip_name, v4l_print_dbg_chip_name, INFO_FL_CLEAR(v4l2_dbg_chip_name, match)),
4839e6c2
HV		 2137};
2138#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
2139
2140bool v4l2_is_known_ioctl(unsigned int cmd)
2141{
2142 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2143 return false;
2144 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
2145}
2146
5a5adf6b
HV		 2147struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd)
2148{
2149 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2150 return vdev->lock;
2151 if (test_bit(_IOC_NR(cmd), vdev->disable_locking))
2152 return NULL;
2153 if (vdev->queue && vdev->queue->lock &&
2154 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
2155 return vdev->queue->lock;
2156 return vdev->lock;
2157}
2158
4839e6c2
HV		 2159/* Common ioctl debug function. This function can be used by
2160 external ioctl messages as well as internal V4L ioctl */
4a085168 2161void v4l_printk_ioctl(const char *prefix, unsigned int cmd)
4839e6c2 2162{
86748f35 2163 const char *dir, *type;
4839e6c2 2164
4a085168
HV		 2165 if (prefix)
2166 printk(KERN_DEBUG "%s: ", prefix);
2167
4839e6c2
HV		 2168 switch (_IOC_TYPE(cmd)) {
2169 case 'd':
2170 type = "v4l2_int";
2171 break;
2172 case 'V':
2173 if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
2174 type = "v4l2";
2175 break;
2176 }
86748f35 2177 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
4839e6c2
HV		 2178 return;
2179 default:
2180 type = "unknown";
86748f35 2181 break;
4839e6c2
HV		 2182 }
2183
2184 switch (_IOC_DIR(cmd)) {
2185 case _IOC_NONE: dir = "--"; break;
2186 case _IOC_READ: dir = "r-"; break;
2187 case _IOC_WRITE: dir = "-w"; break;
2188 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
2189 default: dir = "*ERR*"; break;
2190 }
86748f35 2191 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
4839e6c2
HV		 2192 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
2193}
2194EXPORT_SYMBOL(v4l_printk_ioctl);
2195
069b7479 2196static long __video_do_ioctl(struct file *file,
35ea11ff
HV		 2197 unsigned int cmd, void *arg)
2198{
2199 struct video_device *vfd = video_devdata(file);
a399810c 2200 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
86748f35
HV		 2201 bool write_only = false;
2202 struct v4l2_ioctl_info default_info;
2203 const struct v4l2_ioctl_info *info;
d5fbf32f 2204 void *fh = file->private_data;
99cd47bc 2205 struct v4l2_fh *vfh = NULL;
b1a873a3 2206 int use_fh_prio = 0;
80131fe0 2207 int debug = vfd->debug;
9190d191 2208 long ret = -ENOTTY;
35ea11ff 2209
6a717883 2210 if (ops == NULL) {
4a085168
HV		 2211 pr_warn("%s: has no ioctl_ops.\n",
2212 video_device_node_name(vfd));
9190d191 2213 return ret;
6a717883
HV		 2214 }
2215
b1a873a3 2216 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) {
99cd47bc 2217 vfh = file->private_data;
b1a873a3
HV		 2218 use_fh_prio = test_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
2219 }
99cd47bc 2220
48ea0be0 2221 if (v4l2_is_known_ioctl(cmd)) {
86748f35 2222 info = &v4l2_ioctls[_IOC_NR(cmd)];
48ea0be0
HV		 2223
2224 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) &&
2225 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
86748f35 2226 goto done;
4b902fec
HV		 2227
2228 if (use_fh_prio && (info->flags & INFO_FL_PRIO)) {
2229 ret = v4l2_prio_check(vfd->prio, vfh->prio);
2230 if (ret)
86748f35 2231 goto done;
4b902fec 2232 }
86748f35
HV		 2233 } else {
2234 default_info.ioctl = cmd;
2235 default_info.flags = 0;
f18d8e07 2236 default_info.debug = v4l_print_default;
86748f35 2237 info = &default_info;
48ea0be0
HV		 2238 }
2239
86748f35 2240 write_only = _IOC_DIR(cmd) == _IOC_WRITE;
86748f35
HV		 2241 if (info->flags & INFO_FL_STD) {
2242 typedef int (*vidioc_op)(struct file *file, void *fh, void *p);
2243 const void *p = vfd->ioctl_ops;
26ddcbcc 2244 const vidioc_op *vidioc = p + info->u.offset;
86748f35
HV		 2245
2246 ret = (*vidioc)(file, fh, arg);
86748f35 2247 } else if (info->flags & INFO_FL_FUNC) {
26ddcbcc 2248 ret = info->u.func(ops, file, fh, arg);
f18d8e07
HV		 2249 } else if (!ops->vidioc_default) {
2250 ret = -ENOTTY;
2251 } else {
2252 ret = ops->vidioc_default(file, fh,
2253 use_fh_prio ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
2254 cmd, arg);
48ea0be0 2255 }
99cd47bc 2256
86748f35 2257done:
80131fe0 2258 if (debug) {
4a085168 2259 v4l_printk_ioctl(video_device_node_name(vfd), cmd);
86748f35 2260 if (ret < 0)
505d04bd
HV		 2261 pr_cont(": error %ld", ret);
2262 if (debug == V4L2_DEBUG_IOCTL)
86748f35 2263 pr_cont("\n");
86748f35
HV		 2264 else if (_IOC_DIR(cmd) == _IOC_NONE)
2265 info->debug(arg, write_only);
2266 else {
2267 pr_cont(": ");
2268 info->debug(arg, write_only);
35ea11ff
HV		 2269 }
2270 }
2271
2272 return ret;
2273}
2274
d14e6d76
PO		 2275static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
2276 void * __user *user_ptr, void ***kernel_ptr)
2277{
2278 int ret = 0;
2279
2280 switch (cmd) {
96b1a702 2281 case VIDIOC_PREPARE_BUF:
d14e6d76
PO		 2282 case VIDIOC_QUERYBUF:
2283 case VIDIOC_QBUF:
2284 case VIDIOC_DQBUF: {
2285 struct v4l2_buffer *buf = parg;
2286
2287 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
2288 if (buf->length > VIDEO_MAX_PLANES) {
2289 ret = -EINVAL;
2290 break;
2291 }
2292 *user_ptr = (void __user *)buf->m.planes;
2ef40370 2293 *kernel_ptr = (void *)&buf->m.planes;
d14e6d76
PO		 2294 *array_size = sizeof(struct v4l2_plane) * buf->length;
2295 ret = 1;
2296 }
2297 break;
2298 }
2299
ed45ce2c
HV		 2300 case VIDIOC_SUBDEV_G_EDID:
2301 case VIDIOC_SUBDEV_S_EDID: {
2302 struct v4l2_subdev_edid *edid = parg;
2303
2304 if (edid->blocks) {
1b8b10cc
HV		 2305 if (edid->blocks > 256) {
2306 ret = -EINVAL;
2307 break;
2308 }
ed45ce2c
HV		 2309 *user_ptr = (void __user *)edid->edid;
2310 *kernel_ptr = (void *)&edid->edid;
2311 *array_size = edid->blocks * 128;
2312 ret = 1;
2313 }
2314 break;
2315 }
2316
d14e6d76
PO		 2317 case VIDIOC_S_EXT_CTRLS:
2318 case VIDIOC_G_EXT_CTRLS:
2319 case VIDIOC_TRY_EXT_CTRLS: {
2320 struct v4l2_ext_controls *ctrls = parg;
2321
2322 if (ctrls->count != 0) {
6c06108b
DC		 2323 if (ctrls->count > V4L2_CID_MAX_CTRLS) {
2324 ret = -EINVAL;
2325 break;
2326 }
d14e6d76 2327 *user_ptr = (void __user *)ctrls->controls;
2ef40370 2328 *kernel_ptr = (void *)&ctrls->controls;
d14e6d76
PO		 2329 *array_size = sizeof(struct v4l2_ext_control)
2330 * ctrls->count;
2331 ret = 1;
2332 }
2333 break;
2334 }
2335 }
2336
2337 return ret;
2338}
2339
fc0a8079
LP		 2340long
2341video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
2342 v4l2_kioctl func)
35ea11ff
HV		 2343{
2344 char sbuf[128];
2345 void *mbuf = NULL;
1d94aa36 2346 void *parg = (void *)arg;
069b7479 2347 long err = -EINVAL;
d14e6d76
PO		 2348 bool has_array_args;
2349 size_t array_size = 0;
35ea11ff 2350 void __user *user_ptr = NULL;
d14e6d76 2351 void **kernel_ptr = NULL;
35ea11ff 2352
35ea11ff 2353 /* Copy arguments into temp kernel buffer */
337f9d20 2354 if (_IOC_DIR(cmd) != _IOC_NONE) {
35ea11ff
HV		 2355 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
2356 parg = sbuf;
2357 } else {
2358 /* too big to allocate from stack */
2359 mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
2360 if (NULL == mbuf)
2361 return -ENOMEM;
2362 parg = mbuf;
2363 }
2364
2365 err = -EFAULT;
19c96e4b 2366 if (_IOC_DIR(cmd) & _IOC_WRITE) {
27cd2aba
HV		 2367 unsigned int n = _IOC_SIZE(cmd);
2368
2369 /*
2370 * In some cases, only a few fields are used as input,
2371 * i.e. when the app sets "index" and then the driver
2372 * fills in the rest of the structure for the thing
2373 * with that index. We only need to copy up the first
2374 * non-input field.
2375 */
2376 if (v4l2_is_known_ioctl(cmd)) {
2377 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags;
2378 if (flags & INFO_FL_CLEAR_MASK)
2379 n = (flags & INFO_FL_CLEAR_MASK) >> 16;
2380 }
19c96e4b
TP		 2381
2382 if (copy_from_user(parg, (void __user *)arg, n))
35ea11ff 2383 goto out;
19c96e4b
TP		 2384
2385 /* zero out anything we don't copy from userspace */
2386 if (n < _IOC_SIZE(cmd))
2387 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n);
337f9d20
TP		 2388 } else {
2389 /* read-only ioctl */
2390 memset(parg, 0, _IOC_SIZE(cmd));
19c96e4b 2391 }
35ea11ff
HV		 2392 }
2393
d14e6d76
PO		 2394 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
2395 if (err < 0)
2396 goto out;
2397 has_array_args = err;
35ea11ff 2398
d14e6d76
PO		 2399 if (has_array_args) {
2400 /*
2401 * When adding new types of array args, make sure that the
2402 * parent argument to ioctl (which contains the pointer to the
2403 * array) fits into sbuf (so that mbuf will still remain
2404 * unused up to here).
2405 */
2406 mbuf = kmalloc(array_size, GFP_KERNEL);
2407 err = -ENOMEM;
2408 if (NULL == mbuf)
2409 goto out_array_args;
2410 err = -EFAULT;
2411 if (copy_from_user(mbuf, user_ptr, array_size))
2412 goto out_array_args;
2413 *kernel_ptr = mbuf;
35ea11ff
HV		 2414 }
2415
2416 /* Handles IOCTL */
fc0a8079 2417 err = func(file, cmd, parg);
35ea11ff 2418 if (err == -ENOIOCTLCMD)
02bbb814 2419 err = -ENOTTY;
35ea11ff 2420
d14e6d76
PO		 2421 if (has_array_args) {
2422 *kernel_ptr = user_ptr;
2423 if (copy_to_user(user_ptr, mbuf, array_size))
35ea11ff 2424 err = -EFAULT;
d14e6d76 2425 goto out_array_args;
35ea11ff 2426 }
5d7758ee
HV		 2427 /* VIDIOC_QUERY_DV_TIMINGS can return an error, but still have valid
2428 results that must be returned. */
2429 if (err < 0 && cmd != VIDIOC_QUERY_DV_TIMINGS)
35ea11ff
HV		 2430 goto out;
2431
d14e6d76 2432out_array_args:
35ea11ff
HV		 2433 /* Copy results into user buffer */
2434 switch (_IOC_DIR(cmd)) {
2435 case _IOC_READ:
2436 case (_IOC_WRITE | _IOC_READ):
2437 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
2438 err = -EFAULT;
2439 break;
2440 }
2441
2442out:
2443 kfree(mbuf);
2444 return err;
2445}
fc0a8079
LP		 2446EXPORT_SYMBOL(video_usercopy);
2447
2448long video_ioctl2(struct file *file,
2449 unsigned int cmd, unsigned long arg)
2450{
2451 return video_usercopy(file, cmd, arg, __video_do_ioctl);
2452}
8a522c91 2453EXPORT_SYMBOL(video_ioctl2);
Linux kernel - Deliverables
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