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[media] v4l2-ioctl: remove pointless INFO_FL_CLEAR
[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>
5a5adf6b 29#include <media/videobuf2-core.h>
35ea11ff 30
aa32f4c0
HV		 31#define CREATE_TRACE_POINTS
32#include <trace/events/v4l2.h>
33
25985edc 34/* Zero out the end of the struct pointed to by p. Everything after, but
7ecc0cf9
TP		 35 * not including, the specified field is cleared. */
36#define CLEAR_AFTER_FIELD(p, field) \
37 memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \
38 0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field))
39
73f35418
HV		 40#define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls)
41
35ea11ff
HV		 42struct std_descr {
43 v4l2_std_id std;
44 const char *descr;
45};
46
47static const struct std_descr standards[] = {
48 { V4L2_STD_NTSC, "NTSC" },
49 { V4L2_STD_NTSC_M, "NTSC-M" },
50 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" },
51 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" },
52 { V4L2_STD_NTSC_443, "NTSC-443" },
53 { V4L2_STD_PAL, "PAL" },
54 { V4L2_STD_PAL_BG, "PAL-BG" },
55 { V4L2_STD_PAL_B, "PAL-B" },
56 { V4L2_STD_PAL_B1, "PAL-B1" },
57 { V4L2_STD_PAL_G, "PAL-G" },
58 { V4L2_STD_PAL_H, "PAL-H" },
59 { V4L2_STD_PAL_I, "PAL-I" },
60 { V4L2_STD_PAL_DK, "PAL-DK" },
61 { V4L2_STD_PAL_D, "PAL-D" },
62 { V4L2_STD_PAL_D1, "PAL-D1" },
63 { V4L2_STD_PAL_K, "PAL-K" },
64 { V4L2_STD_PAL_M, "PAL-M" },
65 { V4L2_STD_PAL_N, "PAL-N" },
66 { V4L2_STD_PAL_Nc, "PAL-Nc" },
67 { V4L2_STD_PAL_60, "PAL-60" },
68 { V4L2_STD_SECAM, "SECAM" },
69 { V4L2_STD_SECAM_B, "SECAM-B" },
70 { V4L2_STD_SECAM_G, "SECAM-G" },
71 { V4L2_STD_SECAM_H, "SECAM-H" },
72 { V4L2_STD_SECAM_DK, "SECAM-DK" },
73 { V4L2_STD_SECAM_D, "SECAM-D" },
74 { V4L2_STD_SECAM_K, "SECAM-K" },
75 { V4L2_STD_SECAM_K1, "SECAM-K1" },
76 { V4L2_STD_SECAM_L, "SECAM-L" },
77 { V4L2_STD_SECAM_LC, "SECAM-Lc" },
78 { 0, "Unknown" }
79};
80
81/* video4linux standard ID conversion to standard name
82 */
83const char *v4l2_norm_to_name(v4l2_std_id id)
84{
85 u32 myid = id;
86 int i;
87
88 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
89 64 bit comparations. So, on that architecture, with some gcc
90 variants, compilation fails. Currently, the max value is 30bit wide.
91 */
92 BUG_ON(myid != id);
93
94 for (i = 0; standards[i].std; i++)
95 if (myid == standards[i].std)
96 break;
97 return standards[i].descr;
98}
99EXPORT_SYMBOL(v4l2_norm_to_name);
100
51f0b8d5
TP		 101/* Returns frame period for the given standard */
102void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod)
103{
104 if (id & V4L2_STD_525_60) {
105 frameperiod->numerator = 1001;
106 frameperiod->denominator = 30000;
107 } else {
108 frameperiod->numerator = 1;
109 frameperiod->denominator = 25;
110 }
111}
112EXPORT_SYMBOL(v4l2_video_std_frame_period);
113
35ea11ff
HV		 114/* Fill in the fields of a v4l2_standard structure according to the
115 'id' and 'transmission' parameters. Returns negative on error. */
116int v4l2_video_std_construct(struct v4l2_standard *vs,
117 int id, const char *name)
118{
51f0b8d5
TP		 119 vs->id = id;
120 v4l2_video_std_frame_period(id, &vs->frameperiod);
121 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625;
35ea11ff
HV		 122 strlcpy(vs->name, name, sizeof(vs->name));
123 return 0;
124}
125EXPORT_SYMBOL(v4l2_video_std_construct);
126
127/* ----------------------------------------------------------------- */
128/* some arrays for pretty-printing debug messages of enum types */
129
130const char *v4l2_field_names[] = {
131 [V4L2_FIELD_ANY] = "any",
132 [V4L2_FIELD_NONE] = "none",
133 [V4L2_FIELD_TOP] = "top",
134 [V4L2_FIELD_BOTTOM] = "bottom",
135 [V4L2_FIELD_INTERLACED] = "interlaced",
136 [V4L2_FIELD_SEQ_TB] = "seq-tb",
137 [V4L2_FIELD_SEQ_BT] = "seq-bt",
138 [V4L2_FIELD_ALTERNATE] = "alternate",
139 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",
140 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",
141};
142EXPORT_SYMBOL(v4l2_field_names);
143
144const char *v4l2_type_names[] = {
145 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap",
146 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay",
147 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out",
148 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap",
149 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out",
150 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",
151 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out",
152 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay",
f8f3914c
PO		 153 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane",
154 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane",
6f3073b8 155 [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap",
35ea11ff
HV		 156};
157EXPORT_SYMBOL(v4l2_type_names);
158
159static const char *v4l2_memory_names[] = {
160 [V4L2_MEMORY_MMAP] = "mmap",
161 [V4L2_MEMORY_USERPTR] = "userptr",
162 [V4L2_MEMORY_OVERLAY] = "overlay",
051c7788 163 [V4L2_MEMORY_DMABUF] = "dmabuf",
35ea11ff
HV		 164};
165
d9246240 166#define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown")
35ea11ff
HV		 167
168/* ------------------------------------------------------------------ */
169/* debug help functions */
8ab75e3e 170
59076122
HV		 171static void v4l_print_querycap(const void *arg, bool write_only)
172{
173 const struct v4l2_capability *p = arg;
174
27d5a87c 175 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, "
59076122 176 "capabilities=0x%08x, device_caps=0x%08x\n",
27d5a87c
HV		 177 (int)sizeof(p->driver), p->driver,
178 (int)sizeof(p->card), p->card,
179 (int)sizeof(p->bus_info), p->bus_info,
59076122
HV		 180 p->version, p->capabilities, p->device_caps);
181}
182
183static void v4l_print_enuminput(const void *arg, bool write_only)
184{
185 const struct v4l2_input *p = arg;
186
27d5a87c 187 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, "
59076122 188 "std=0x%08Lx, status=0x%x, capabilities=0x%x\n",
27d5a87c
HV		 189 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
190 p->tuner, (unsigned long long)p->std, p->status,
191 p->capabilities);
59076122
HV		 192}
193
194static void v4l_print_enumoutput(const void *arg, bool write_only)
195{
196 const struct v4l2_output *p = arg;
197
27d5a87c 198 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, "
59076122 199 "modulator=%u, std=0x%08Lx, capabilities=0x%x\n",
27d5a87c
HV		 200 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
201 p->modulator, (unsigned long long)p->std, p->capabilities);
59076122
HV		 202}
203
204static void v4l_print_audio(const void *arg, bool write_only)
205{
206 const struct v4l2_audio *p = arg;
207
208 if (write_only)
209 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode);
210 else
27d5a87c
HV		 211 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
212 p->index, (int)sizeof(p->name), p->name,
213 p->capability, p->mode);
59076122
HV		 214}
215
216static void v4l_print_audioout(const void *arg, bool write_only)
217{
218 const struct v4l2_audioout *p = arg;
219
220 if (write_only)
221 pr_cont("index=%u\n", p->index);
222 else
27d5a87c
HV		 223 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
224 p->index, (int)sizeof(p->name), p->name,
225 p->capability, p->mode);
59076122
HV		 226}
227
be6c64e4
HV		 228static void v4l_print_fmtdesc(const void *arg, bool write_only)
229{
230 const struct v4l2_fmtdesc *p = arg;
231
27d5a87c 232 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%c%c%c%c, description='%.*s'\n",
be6c64e4
HV		 233 p->index, prt_names(p->type, v4l2_type_names),
234 p->flags, (p->pixelformat & 0xff),
235 (p->pixelformat >> 8) & 0xff,
236 (p->pixelformat >> 16) & 0xff,
237 (p->pixelformat >> 24) & 0xff,
27d5a87c 238 (int)sizeof(p->description), p->description);
be6c64e4
HV		 239}
240
241static void v4l_print_format(const void *arg, bool write_only)
242{
243 const struct v4l2_format *p = arg;
244 const struct v4l2_pix_format *pix;
245 const struct v4l2_pix_format_mplane *mp;
246 const struct v4l2_vbi_format *vbi;
247 const struct v4l2_sliced_vbi_format *sliced;
248 const struct v4l2_window *win;
87185c95 249 const struct v4l2_sdr_format *sdr;
be6c64e4
HV		 250 unsigned i;
251
252 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
253 switch (p->type) {
254 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
255 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
256 pix = &p->fmt.pix;
257 pr_cont(", width=%u, height=%u, "
258 "pixelformat=%c%c%c%c, field=%s, "
c96fd46a
LP		 259 "bytesperline=%u, sizeimage=%u, colorspace=%d, "
260 "flags %u\n",
be6c64e4
HV		 261 pix->width, pix->height,
262 (pix->pixelformat & 0xff),
263 (pix->pixelformat >> 8) & 0xff,
264 (pix->pixelformat >> 16) & 0xff,
265 (pix->pixelformat >> 24) & 0xff,
266 prt_names(pix->field, v4l2_field_names),
267 pix->bytesperline, pix->sizeimage,
c96fd46a 268 pix->colorspace, pix->flags);
be6c64e4
HV		 269 break;
270 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
271 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
272 mp = &p->fmt.pix_mp;
273 pr_cont(", width=%u, height=%u, "
274 "format=%c%c%c%c, field=%s, "
275 "colorspace=%d, num_planes=%u\n",
276 mp->width, mp->height,
277 (mp->pixelformat & 0xff),
278 (mp->pixelformat >> 8) & 0xff,
279 (mp->pixelformat >> 16) & 0xff,
280 (mp->pixelformat >> 24) & 0xff,
281 prt_names(mp->field, v4l2_field_names),
282 mp->colorspace, mp->num_planes);
283 for (i = 0; i < mp->num_planes; i++)
284 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i,
285 mp->plane_fmt[i].bytesperline,
286 mp->plane_fmt[i].sizeimage);
287 break;
288 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
289 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
290 win = &p->fmt.win;
560dde24
HV		 291 /* Note: we can't print the clip list here since the clips
292 * pointer is a userspace pointer, not a kernelspace
293 * pointer. */
294 pr_cont(", wxh=%dx%d, x,y=%d,%d, field=%s, chromakey=0x%08x, clipcount=%u, clips=%p, bitmap=%p, global_alpha=0x%02x\n",
295 win->w.width, win->w.height, win->w.left, win->w.top,
be6c64e4 296 prt_names(win->field, v4l2_field_names),
560dde24
HV		 297 win->chromakey, win->clipcount, win->clips,
298 win->bitmap, win->global_alpha);
be6c64e4
HV		 299 break;
300 case V4L2_BUF_TYPE_VBI_CAPTURE:
301 case V4L2_BUF_TYPE_VBI_OUTPUT:
302 vbi = &p->fmt.vbi;
303 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, "
304 "sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n",
305 vbi->sampling_rate, vbi->offset,
306 vbi->samples_per_line,
307 (vbi->sample_format & 0xff),
308 (vbi->sample_format >> 8) & 0xff,
309 (vbi->sample_format >> 16) & 0xff,
310 (vbi->sample_format >> 24) & 0xff,
311 vbi->start[0], vbi->start[1],
312 vbi->count[0], vbi->count[1]);
313 break;
314 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
315 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
316 sliced = &p->fmt.sliced;
317 pr_cont(", service_set=0x%08x, io_size=%d\n",
318 sliced->service_set, sliced->io_size);
319 for (i = 0; i < 24; i++)
320 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
321 sliced->service_lines[0][i],
322 sliced->service_lines[1][i]);
323 break;
582c52cb
AP		 324 case V4L2_BUF_TYPE_SDR_CAPTURE:
325 sdr = &p->fmt.sdr;
326 pr_cont(", pixelformat=%c%c%c%c\n",
327 (sdr->pixelformat >> 0) & 0xff,
328 (sdr->pixelformat >> 8) & 0xff,
329 (sdr->pixelformat >> 16) & 0xff,
330 (sdr->pixelformat >> 24) & 0xff);
331 break;
be6c64e4
HV		 332 }
333}
334
335static void v4l_print_framebuffer(const void *arg, bool write_only)
336{
337 const struct v4l2_framebuffer *p = arg;
338
339 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, "
340 "height=%u, pixelformat=%c%c%c%c, "
560dde24 341 "bytesperline=%u, sizeimage=%u, colorspace=%d\n",
be6c64e4
HV		 342 p->capability, p->flags, p->base,
343 p->fmt.width, p->fmt.height,
344 (p->fmt.pixelformat & 0xff),
345 (p->fmt.pixelformat >> 8) & 0xff,
346 (p->fmt.pixelformat >> 16) & 0xff,
347 (p->fmt.pixelformat >> 24) & 0xff,
348 p->fmt.bytesperline, p->fmt.sizeimage,
349 p->fmt.colorspace);
350}
351
e325b244
HV		 352static void v4l_print_buftype(const void *arg, bool write_only)
353{
354 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names));
355}
356
4b1e2e4d
HV		 357static void v4l_print_modulator(const void *arg, bool write_only)
358{
359 const struct v4l2_modulator *p = arg;
360
361 if (write_only)
560dde24 362 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans);
4b1e2e4d 363 else
27d5a87c 364 pr_cont("index=%u, name=%.*s, capability=0x%x, "
4b1e2e4d 365 "rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
27d5a87c 366 p->index, (int)sizeof(p->name), p->name, p->capability,
4b1e2e4d
HV		 367 p->rangelow, p->rangehigh, p->txsubchans);
368}
369
370static void v4l_print_tuner(const void *arg, bool write_only)
371{
372 const struct v4l2_tuner *p = arg;
373
374 if (write_only)
375 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode);
376 else
27d5a87c 377 pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, "
4b1e2e4d
HV		 378 "rangelow=%u, rangehigh=%u, signal=%u, afc=%d, "
379 "rxsubchans=0x%x, audmode=%u\n",
27d5a87c 380 p->index, (int)sizeof(p->name), p->name, p->type,
4b1e2e4d
HV		 381 p->capability, p->rangelow,
382 p->rangehigh, p->signal, p->afc,
383 p->rxsubchans, p->audmode);
384}
385
386static void v4l_print_frequency(const void *arg, bool write_only)
387{
388 const struct v4l2_frequency *p = arg;
389
390 pr_cont("tuner=%u, type=%u, frequency=%u\n",
391 p->tuner, p->type, p->frequency);
392}
393
394static void v4l_print_standard(const void *arg, bool write_only)
395{
396 const struct v4l2_standard *p = arg;
397
27d5a87c 398 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, "
4b1e2e4d 399 "framelines=%u\n", p->index,
27d5a87c 400 (unsigned long long)p->id, (int)sizeof(p->name), p->name,
4b1e2e4d
HV		 401 p->frameperiod.numerator,
402 p->frameperiod.denominator,
403 p->framelines);
404}
405
406static void v4l_print_std(const void *arg, bool write_only)
407{
408 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg);
409}
410
411static void v4l_print_hw_freq_seek(const void *arg, bool write_only)
412{
413 const struct v4l2_hw_freq_seek *p = arg;
414
5e788317
HV		 415 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, "
416 "rangelow=%u, rangehigh=%u\n",
417 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing,
418 p->rangelow, p->rangehigh);
4b1e2e4d
HV		 419}
420
eb3728ed 421static void v4l_print_requestbuffers(const void *arg, bool write_only)
59076122 422{
eb3728ed
HV		 423 const struct v4l2_requestbuffers *p = arg;
424
425 pr_cont("count=%d, type=%s, memory=%s\n",
426 p->count,
427 prt_names(p->type, v4l2_type_names),
428 prt_names(p->memory, v4l2_memory_names));
59076122
HV		 429}
430
eb3728ed 431static void v4l_print_buffer(const void *arg, bool write_only)
35ea11ff 432{
eb3728ed
HV		 433 const struct v4l2_buffer *p = arg;
434 const struct v4l2_timecode *tc = &p->timecode;
435 const struct v4l2_plane *plane;
d14e6d76 436 int i;
35ea11ff 437
eb3728ed
HV		 438 pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, "
439 "flags=0x%08x, field=%s, sequence=%d, memory=%s",
35ea11ff
HV		 440 p->timestamp.tv_sec / 3600,
441 (int)(p->timestamp.tv_sec / 60) % 60,
442 (int)(p->timestamp.tv_sec % 60),
b045979d 443 (long)p->timestamp.tv_usec,
35ea11ff
HV		 444 p->index,
445 prt_names(p->type, v4l2_type_names),
eb3728ed
HV		 446 p->flags, prt_names(p->field, v4l2_field_names),
447 p->sequence, prt_names(p->memory, v4l2_memory_names));
d14e6d76
PO		 448
449 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
eb3728ed 450 pr_cont("\n");
d14e6d76
PO		 451 for (i = 0; i < p->length; ++i) {
452 plane = &p->m.planes[i];
eb3728ed 453 printk(KERN_DEBUG
560dde24 454 "plane %d: bytesused=%d, data_offset=0x%08x, "
eb3728ed 455 "offset/userptr=0x%lx, length=%d\n",
d14e6d76
PO		 456 i, plane->bytesused, plane->data_offset,
457 plane->m.userptr, plane->length);
458 }
459 } else {
560dde24 460 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n",
d14e6d76
PO		 461 p->bytesused, p->m.userptr, p->length);
462 }
463
eb3728ed
HV		 464 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, "
465 "flags=0x%08x, frames=%d, userbits=0x%08x\n",
35ea11ff
HV		 466 tc->hours, tc->minutes, tc->seconds,
467 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
468}
469
b799d09a
TS		 470static void v4l_print_exportbuffer(const void *arg, bool write_only)
471{
472 const struct v4l2_exportbuffer *p = arg;
473
474 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n",
475 p->fd, prt_names(p->type, v4l2_type_names),
476 p->index, p->plane, p->flags);
477}
478
eb3728ed
HV		 479static void v4l_print_create_buffers(const void *arg, bool write_only)
480{
481 const struct v4l2_create_buffers *p = arg;
482
483 pr_cont("index=%d, count=%d, memory=%s, ",
484 p->index, p->count,
485 prt_names(p->memory, v4l2_memory_names));
486 v4l_print_format(&p->format, write_only);
487}
488
489static void v4l_print_streamparm(const void *arg, bool write_only)
490{
491 const struct v4l2_streamparm *p = arg;
492
493 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
494
495 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
496 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
497 const struct v4l2_captureparm *c = &p->parm.capture;
498
499 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, "
500 "extendedmode=%d, readbuffers=%d\n",
501 c->capability, c->capturemode,
502 c->timeperframe.numerator, c->timeperframe.denominator,
503 c->extendedmode, c->readbuffers);
504 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
505 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
506 const struct v4l2_outputparm *c = &p->parm.output;
507
508 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, "
509 "extendedmode=%d, writebuffers=%d\n",
510 c->capability, c->outputmode,
511 c->timeperframe.numerator, c->timeperframe.denominator,
512 c->extendedmode, c->writebuffers);
560dde24
HV		 513 } else {
514 pr_cont("\n");
eb3728ed
HV		 515 }
516}
517
efbceecd
HV		 518static void v4l_print_queryctrl(const void *arg, bool write_only)
519{
520 const struct v4l2_queryctrl *p = arg;
521
27d5a87c 522 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, "
efbceecd 523 "step=%d, default=%d, flags=0x%08x\n",
27d5a87c 524 p->id, p->type, (int)sizeof(p->name), p->name,
efbceecd
HV		 525 p->minimum, p->maximum,
526 p->step, p->default_value, p->flags);
527}
528
e6bee368
HV		 529static void v4l_print_query_ext_ctrl(const void *arg, bool write_only)
530{
531 const struct v4l2_query_ext_ctrl *p = arg;
532
533 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%lld/%lld, "
534 "step=%lld, default=%lld, flags=0x%08x, elem_size=%u, elems=%u, "
0176077a 535 "nr_of_dims=%u, dims=%u,%u,%u,%u\n",
e6bee368
HV		 536 p->id, p->type, (int)sizeof(p->name), p->name,
537 p->minimum, p->maximum,
538 p->step, p->default_value, p->flags,
539 p->elem_size, p->elems, p->nr_of_dims,
0176077a 540 p->dims[0], p->dims[1], p->dims[2], p->dims[3]);
e6bee368
HV		 541}
542
efbceecd
HV		 543static void v4l_print_querymenu(const void *arg, bool write_only)
544{
545 const struct v4l2_querymenu *p = arg;
546
547 pr_cont("id=0x%x, index=%d\n", p->id, p->index);
548}
549
550static void v4l_print_control(const void *arg, bool write_only)
551{
552 const struct v4l2_control *p = arg;
553
554 pr_cont("id=0x%x, value=%d\n", p->id, p->value);
555}
556
557static void v4l_print_ext_controls(const void *arg, bool write_only)
558{
559 const struct v4l2_ext_controls *p = arg;
560 int i;
561
562 pr_cont("class=0x%x, count=%d, error_idx=%d",
563 p->ctrl_class, p->count, p->error_idx);
564 for (i = 0; i < p->count; i++) {
565 if (p->controls[i].size)
566 pr_cont(", id/val=0x%x/0x%x",
567 p->controls[i].id, p->controls[i].value);
568 else
569 pr_cont(", id/size=0x%x/%u",
570 p->controls[i].id, p->controls[i].size);
571 }
572 pr_cont("\n");
573}
574
d84f2d94 575static void v4l_print_cropcap(const void *arg, bool write_only)
eb3728ed 576{
d84f2d94
HV		 577 const struct v4l2_cropcap *p = arg;
578
579 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, "
a112fbaf 580 "defrect wxh=%dx%d, x,y=%d,%d, "
d84f2d94
HV		 581 "pixelaspect %d/%d\n",
582 prt_names(p->type, v4l2_type_names),
583 p->bounds.width, p->bounds.height,
584 p->bounds.left, p->bounds.top,
585 p->defrect.width, p->defrect.height,
586 p->defrect.left, p->defrect.top,
587 p->pixelaspect.numerator, p->pixelaspect.denominator);
eb3728ed
HV		 588}
589
d84f2d94 590static void v4l_print_crop(const void *arg, bool write_only)
35ea11ff 591{
d84f2d94
HV		 592 const struct v4l2_crop *p = arg;
593
594 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n",
595 prt_names(p->type, v4l2_type_names),
596 p->c.width, p->c.height,
597 p->c.left, p->c.top);
598}
599
600static void v4l_print_selection(const void *arg, bool write_only)
601{
602 const struct v4l2_selection *p = arg;
603
604 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n",
605 prt_names(p->type, v4l2_type_names),
606 p->target, p->flags,
607 p->r.width, p->r.height, p->r.left, p->r.top);
608}
609
d806f2df
HV		 610static void v4l_print_jpegcompression(const void *arg, bool write_only)
611{
612 const struct v4l2_jpegcompression *p = arg;
613
614 pr_cont("quality=%d, APPn=%d, APP_len=%d, "
615 "COM_len=%d, jpeg_markers=0x%x\n",
616 p->quality, p->APPn, p->APP_len,
617 p->COM_len, p->jpeg_markers);
618}
619
620static void v4l_print_enc_idx(const void *arg, bool write_only)
621{
622 const struct v4l2_enc_idx *p = arg;
623
624 pr_cont("entries=%d, entries_cap=%d\n",
625 p->entries, p->entries_cap);
626}
627
628static void v4l_print_encoder_cmd(const void *arg, bool write_only)
629{
630 const struct v4l2_encoder_cmd *p = arg;
631
632 pr_cont("cmd=%d, flags=0x%x\n",
633 p->cmd, p->flags);
634}
635
636static void v4l_print_decoder_cmd(const void *arg, bool write_only)
637{
638 const struct v4l2_decoder_cmd *p = arg;
639
640 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags);
641
642 if (p->cmd == V4L2_DEC_CMD_START)
643 pr_info("speed=%d, format=%u\n",
644 p->start.speed, p->start.format);
645 else if (p->cmd == V4L2_DEC_CMD_STOP)
646 pr_info("pts=%llu\n", p->stop.pts);
647}
648
96b03d2a 649static void v4l_print_dbg_chip_info(const void *arg, bool write_only)
79b0c640 650{
96b03d2a 651 const struct v4l2_dbg_chip_info *p = arg;
79b0c640
HV		 652
653 pr_cont("type=%u, ", p->match.type);
3eef2510 654 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
79b0c640
HV		 655 pr_cont("name=%.*s, ",
656 (int)sizeof(p->match.name), p->match.name);
657 else
658 pr_cont("addr=%u, ", p->match.addr);
659 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name);
660}
661
f16f77b0
HV		 662static void v4l_print_dbg_register(const void *arg, bool write_only)
663{
664 const struct v4l2_dbg_register *p = arg;
665
666 pr_cont("type=%u, ", p->match.type);
3eef2510 667 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
27d5a87c
HV		 668 pr_cont("name=%.*s, ",
669 (int)sizeof(p->match.name), p->match.name);
f16f77b0
HV		 670 else
671 pr_cont("addr=%u, ", p->match.addr);
672 pr_cont("reg=0x%llx, val=0x%llx\n",
673 p->reg, p->val);
674}
675
efc626b0 676static void v4l_print_dv_timings(const void *arg, bool write_only)
5d7758ee 677{
efc626b0
HV		 678 const struct v4l2_dv_timings *p = arg;
679
5d7758ee
HV		 680 switch (p->type) {
681 case V4L2_DV_BT_656_1120:
efc626b0
HV		 682 pr_cont("type=bt-656/1120, interlaced=%u, "
683 "pixelclock=%llu, "
684 "width=%u, height=%u, polarities=0x%x, "
685 "hfrontporch=%u, hsync=%u, "
686 "hbackporch=%u, vfrontporch=%u, "
687 "vsync=%u, vbackporch=%u, "
688 "il_vfrontporch=%u, il_vsync=%u, "
689 "il_vbackporch=%u, standards=0x%x, flags=0x%x\n",
5d7758ee
HV		 690 p->bt.interlaced, p->bt.pixelclock,
691 p->bt.width, p->bt.height,
692 p->bt.polarities, p->bt.hfrontporch,
693 p->bt.hsync, p->bt.hbackporch,
694 p->bt.vfrontporch, p->bt.vsync,
695 p->bt.vbackporch, p->bt.il_vfrontporch,
696 p->bt.il_vsync, p->bt.il_vbackporch,
697 p->bt.standards, p->bt.flags);
698 break;
699 default:
efc626b0 700 pr_cont("type=%d\n", p->type);
5d7758ee
HV		 701 break;
702 }
703}
704
efc626b0
HV		 705static void v4l_print_enum_dv_timings(const void *arg, bool write_only)
706{
707 const struct v4l2_enum_dv_timings *p = arg;
708
709 pr_cont("index=%u, ", p->index);
710 v4l_print_dv_timings(&p->timings, write_only);
711}
712
713static void v4l_print_dv_timings_cap(const void *arg, bool write_only)
714{
715 const struct v4l2_dv_timings_cap *p = arg;
716
717 switch (p->type) {
718 case V4L2_DV_BT_656_1120:
719 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, "
720 "pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
721 p->bt.min_width, p->bt.max_width,
722 p->bt.min_height, p->bt.max_height,
723 p->bt.min_pixelclock, p->bt.max_pixelclock,
724 p->bt.standards, p->bt.capabilities);
725 break;
726 default:
727 pr_cont("type=%u\n", p->type);
728 break;
729 }
730}
731
458aa4a6
HV		 732static void v4l_print_frmsizeenum(const void *arg, bool write_only)
733{
734 const struct v4l2_frmsizeenum *p = arg;
735
736 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u",
737 p->index,
738 (p->pixel_format & 0xff),
739 (p->pixel_format >> 8) & 0xff,
740 (p->pixel_format >> 16) & 0xff,
741 (p->pixel_format >> 24) & 0xff,
742 p->type);
743 switch (p->type) {
744 case V4L2_FRMSIZE_TYPE_DISCRETE:
560dde24 745 pr_cont(", wxh=%ux%u\n",
458aa4a6
HV		 746 p->discrete.width, p->discrete.height);
747 break;
748 case V4L2_FRMSIZE_TYPE_STEPWISE:
560dde24 749 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n",
458aa4a6
HV		 750 p->stepwise.min_width, p->stepwise.min_height,
751 p->stepwise.step_width, p->stepwise.step_height,
752 p->stepwise.max_width, p->stepwise.max_height);
753 break;
754 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
755 /* fall through */
756 default:
757 pr_cont("\n");
758 break;
759 }
760}
761
762static void v4l_print_frmivalenum(const void *arg, bool write_only)
763{
764 const struct v4l2_frmivalenum *p = arg;
765
766 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u",
767 p->index,
768 (p->pixel_format & 0xff),
769 (p->pixel_format >> 8) & 0xff,
770 (p->pixel_format >> 16) & 0xff,
771 (p->pixel_format >> 24) & 0xff,
772 p->width, p->height, p->type);
773 switch (p->type) {
774 case V4L2_FRMIVAL_TYPE_DISCRETE:
560dde24 775 pr_cont(", fps=%d/%d\n",
458aa4a6
HV		 776 p->discrete.numerator,
777 p->discrete.denominator);
778 break;
779 case V4L2_FRMIVAL_TYPE_STEPWISE:
560dde24 780 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n",
458aa4a6
HV		 781 p->stepwise.min.numerator,
782 p->stepwise.min.denominator,
783 p->stepwise.max.numerator,
784 p->stepwise.max.denominator,
785 p->stepwise.step.numerator,
786 p->stepwise.step.denominator);
787 break;
788 case V4L2_FRMIVAL_TYPE_CONTINUOUS:
789 /* fall through */
790 default:
791 pr_cont("\n");
792 break;
793 }
794}
795
796static void v4l_print_event(const void *arg, bool write_only)
797{
798 const struct v4l2_event *p = arg;
799 const struct v4l2_event_ctrl *c;
800
801 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, "
802 "timestamp=%lu.%9.9lu\n",
803 p->type, p->pending, p->sequence, p->id,
804 p->timestamp.tv_sec, p->timestamp.tv_nsec);
805 switch (p->type) {
806 case V4L2_EVENT_VSYNC:
807 printk(KERN_DEBUG "field=%s\n",
808 prt_names(p->u.vsync.field, v4l2_field_names));
809 break;
810 case V4L2_EVENT_CTRL:
811 c = &p->u.ctrl;
812 printk(KERN_DEBUG "changes=0x%x, type=%u, ",
813 c->changes, c->type);
814 if (c->type == V4L2_CTRL_TYPE_INTEGER64)
815 pr_cont("value64=%lld, ", c->value64);
816 else
817 pr_cont("value=%d, ", c->value);
560dde24
HV		 818 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, "
819 "default_value=%d\n",
458aa4a6
HV		 820 c->flags, c->minimum, c->maximum,
821 c->step, c->default_value);
822 break;
823 case V4L2_EVENT_FRAME_SYNC:
824 pr_cont("frame_sequence=%u\n",
825 p->u.frame_sync.frame_sequence);
826 break;
827 }
828}
829
830static void v4l_print_event_subscription(const void *arg, bool write_only)
831{
832 const struct v4l2_event_subscription *p = arg;
833
834 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
835 p->type, p->id, p->flags);
836}
837
838static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only)
839{
840 const struct v4l2_sliced_vbi_cap *p = arg;
841 int i;
842
843 pr_cont("type=%s, service_set=0x%08x\n",
844 prt_names(p->type, v4l2_type_names), p->service_set);
845 for (i = 0; i < 24; i++)
846 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
847 p->service_lines[0][i],
848 p->service_lines[1][i]);
849}
850
82b655bf
HV		 851static void v4l_print_freq_band(const void *arg, bool write_only)
852{
853 const struct v4l2_frequency_band *p = arg;
854
855 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, "
560dde24 856 "rangelow=%u, rangehigh=%u, modulation=0x%x\n",
82b655bf
HV		 857 p->tuner, p->type, p->index,
858 p->capability, p->rangelow,
859 p->rangehigh, p->modulation);
860}
861
dd519bb3
HV		 862static void v4l_print_edid(const void *arg, bool write_only)
863{
864 const struct v4l2_edid *p = arg;
865
866 pr_cont("pad=%u, start_block=%u, blocks=%u\n",
867 p->pad, p->start_block, p->blocks);
868}
869
efc626b0
HV		 870static void v4l_print_u32(const void *arg, bool write_only)
871{
872 pr_cont("value=%u\n", *(const u32 *)arg);
873}
874
875static void v4l_print_newline(const void *arg, bool write_only)
876{
877 pr_cont("\n");
878}
879
f18d8e07
HV		 880static void v4l_print_default(const void *arg, bool write_only)
881{
882 pr_cont("driver-specific ioctl\n");
883}
884
efbceecd 885static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
35ea11ff
HV		 886{
887 __u32 i;
888
889 /* zero the reserved fields */
890 c->reserved[0] = c->reserved[1] = 0;
6b5a9492 891 for (i = 0; i < c->count; i++)
35ea11ff 892 c->controls[i].reserved2[0] = 0;
6b5a9492 893
35ea11ff
HV		 894 /* V4L2_CID_PRIVATE_BASE cannot be used as control class
895 when using extended controls.
896 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
897 is it allowed for backwards compatibility.
898 */
899 if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE)
900 return 0;
901 /* Check that all controls are from the same control class. */
902 for (i = 0; i < c->count; i++) {
903 if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) {
904 c->error_idx = i;
905 return 0;
906 }
907 }
908 return 1;
909}
910
4b20259f 911static int check_fmt(struct file *file, enum v4l2_buf_type type)
35ea11ff 912{
4b20259f
HV		 913 struct video_device *vfd = video_devdata(file);
914 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
915 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
916 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI;
582c52cb 917 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
4b20259f
HV		 918 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
919 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
920
a399810c
HV		 921 if (ops == NULL)
922 return -EINVAL;
923
35ea11ff
HV		 924 switch (type) {
925 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f
HV		 926 if (is_vid && is_rx &&
927 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane))
d14e6d76
PO		 928 return 0;
929 break;
930 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 931 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_cap_mplane)
35ea11ff
HV		 932 return 0;
933 break;
934 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 935 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay)
35ea11ff
HV		 936 return 0;
937 break;
938 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f
HV		 939 if (is_vid && is_tx &&
940 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane))
d14e6d76
PO		 941 return 0;
942 break;
943 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 944 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane)
35ea11ff
HV		 945 return 0;
946 break;
947 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 948 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay)
35ea11ff
HV		 949 return 0;
950 break;
951 case V4L2_BUF_TYPE_VBI_CAPTURE:
4b20259f 952 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap)
35ea11ff
HV		 953 return 0;
954 break;
955 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 956 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out)
35ea11ff
HV		 957 return 0;
958 break;
959 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
4b20259f 960 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap)
35ea11ff
HV		 961 return 0;
962 break;
963 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 964 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out)
35ea11ff
HV		 965 return 0;
966 break;
582c52cb
AP		 967 case V4L2_BUF_TYPE_SDR_CAPTURE:
968 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap)
969 return 0;
970 break;
633c98e5 971 default:
35ea11ff
HV		 972 break;
973 }
974 return -EINVAL;
975}
976
d52e2381
LP		 977static void v4l_sanitize_format(struct v4l2_format *fmt)
978{
979 unsigned int offset;
980
981 /*
982 * The v4l2_pix_format structure has been extended with fields that were
983 * not previously required to be set to zero by applications. The priv
984 * field, when set to a magic value, indicates the the extended fields
985 * are valid. Otherwise they will contain undefined values. To simplify
986 * the API towards drivers zero the extended fields and set the priv
987 * field to the magic value when the extended pixel format structure
988 * isn't used by applications.
989 */
990
991 if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
992 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
993 return;
994
995 if (fmt->fmt.pix.priv == V4L2_PIX_FMT_PRIV_MAGIC)
996 return;
997
998 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
999
1000 offset = offsetof(struct v4l2_pix_format, priv)
1001 + sizeof(fmt->fmt.pix.priv);
1002 memset(((void *)&fmt->fmt.pix) + offset, 0,
1003 sizeof(fmt->fmt.pix) - offset);
1004}
1005
59076122
HV		 1006static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
1007 struct file *file, void *fh, void *arg)
1008{
1009 struct v4l2_capability *cap = (struct v4l2_capability *)arg;
d52e2381 1010 int ret;
59076122
HV		 1011
1012 cap->version = LINUX_VERSION_CODE;
d52e2381
LP		 1013
1014 ret = ops->vidioc_querycap(file, fh, cap);
1015
1016 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT;
1017
1018 return ret;
59076122
HV		 1019}
1020
1021static int v4l_s_input(const struct v4l2_ioctl_ops *ops,
1022 struct file *file, void *fh, void *arg)
1023{
1024 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg);
1025}
1026
1027static int v4l_s_output(const struct v4l2_ioctl_ops *ops,
1028 struct file *file, void *fh, void *arg)
1029{
1030 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg);
1031}
1032
d0547cba
HV		 1033static int v4l_g_priority(const struct v4l2_ioctl_ops *ops,
1034 struct file *file, void *fh, void *arg)
1035{
1036 struct video_device *vfd;
1037 u32 *p = arg;
1038
1039 if (ops->vidioc_g_priority)
1040 return ops->vidioc_g_priority(file, fh, arg);
1041 vfd = video_devdata(file);
1042 *p = v4l2_prio_max(&vfd->v4l2_dev->prio);
1043 return 0;
1044}
1045
1046static int v4l_s_priority(const struct v4l2_ioctl_ops *ops,
1047 struct file *file, void *fh, void *arg)
1048{
1049 struct video_device *vfd;
1050 struct v4l2_fh *vfh;
1051 u32 *p = arg;
1052
1053 if (ops->vidioc_s_priority)
1054 return ops->vidioc_s_priority(file, fh, *p);
1055 vfd = video_devdata(file);
1056 vfh = file->private_data;
1057 return v4l2_prio_change(&vfd->v4l2_dev->prio, &vfh->prio, *p);
1058}
1059
59076122
HV		 1060static int v4l_enuminput(const struct v4l2_ioctl_ops *ops,
1061 struct file *file, void *fh, void *arg)
1062{
73f35418 1063 struct video_device *vfd = video_devdata(file);
59076122
HV		 1064 struct v4l2_input *p = arg;
1065
1066 /*
02fa6282 1067 * We set the flags for CAP_DV_TIMINGS &
59076122
HV		 1068 * CAP_STD here based on ioctl handler provided by the
1069 * driver. If the driver doesn't support these
1070 * for a specific input, it must override these flags.
1071 */
73f35418 1072 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
59076122 1073 p->capabilities |= V4L2_IN_CAP_STD;
59076122
HV		 1074
1075 return ops->vidioc_enum_input(file, fh, p);
1076}
1077
1078static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops,
1079 struct file *file, void *fh, void *arg)
1080{
73f35418 1081 struct video_device *vfd = video_devdata(file);
59076122
HV		 1082 struct v4l2_output *p = arg;
1083
1084 /*
02fa6282 1085 * We set the flags for CAP_DV_TIMINGS &
59076122
HV		 1086 * CAP_STD here based on ioctl handler provided by the
1087 * driver. If the driver doesn't support these
1088 * for a specific output, it must override these flags.
1089 */
73f35418 1090 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
59076122 1091 p->capabilities |= V4L2_OUT_CAP_STD;
59076122
HV		 1092
1093 return ops->vidioc_enum_output(file, fh, p);
1094}
1095
be6c64e4
HV		 1096static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
1097 struct file *file, void *fh, void *arg)
1098{
1099 struct v4l2_fmtdesc *p = arg;
4b20259f 1100 struct video_device *vfd = video_devdata(file);
ce71bbc9
HV		 1101 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1102 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
4b20259f
HV		 1103 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1104 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
be6c64e4
HV		 1105
1106 switch (p->type) {
1107 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
ce71bbc9 1108 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_cap))
be6c64e4
HV		 1109 break;
1110 return ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
1111 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
ce71bbc9 1112 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_cap_mplane))
be6c64e4
HV		 1113 break;
1114 return ops->vidioc_enum_fmt_vid_cap_mplane(file, fh, arg);
1115 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
ce71bbc9 1116 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_overlay))
be6c64e4
HV		 1117 break;
1118 return ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
1119 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
ce71bbc9 1120 if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out))
be6c64e4
HV		 1121 break;
1122 return ops->vidioc_enum_fmt_vid_out(file, fh, arg);
1123 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
ce71bbc9 1124 if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out_mplane))
be6c64e4
HV		 1125 break;
1126 return ops->vidioc_enum_fmt_vid_out_mplane(file, fh, arg);
582c52cb 1127 case V4L2_BUF_TYPE_SDR_CAPTURE:
ce71bbc9 1128 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_enum_fmt_sdr_cap))
582c52cb
AP		 1129 break;
1130 return ops->vidioc_enum_fmt_sdr_cap(file, fh, arg);
be6c64e4
HV		 1131 }
1132 return -EINVAL;
1133}
1134
1135static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
1136 struct file *file, void *fh, void *arg)
1137{
1138 struct v4l2_format *p = arg;
4b20259f
HV		 1139 struct video_device *vfd = video_devdata(file);
1140 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
582c52cb 1141 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
4b20259f
HV		 1142 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1143 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
d52e2381
LP		 1144 int ret;
1145
1146 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
be6c64e4
HV		 1147
1148 switch (p->type) {
1149 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1150 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap))
be6c64e4 1151 break;
d52e2381
LP		 1152 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg);
1153 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1154 return ret;
be6c64e4 1155 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1156 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap_mplane))
be6c64e4
HV		 1157 break;
1158 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
1159 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1160 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_overlay))
be6c64e4
HV		 1161 break;
1162 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
4b20259f
HV		 1163 case V4L2_BUF_TYPE_VBI_CAPTURE:
1164 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_vbi_cap))
1165 break;
1166 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
1167 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1168 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_cap))
1169 break;
1170 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1171 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1172 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out))
be6c64e4 1173 break;
d52e2381
LP		 1174 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg);
1175 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1176 return ret;
be6c64e4 1177 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1178 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_mplane))
be6c64e4
HV		 1179 break;
1180 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
1181 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 1182 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_overlay))
be6c64e4
HV		 1183 break;
1184 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1185 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 1186 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_vbi_out))
be6c64e4
HV		 1187 break;
1188 return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
be6c64e4 1189 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 1190 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_out))
be6c64e4
HV		 1191 break;
1192 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
582c52cb
AP		 1193 case V4L2_BUF_TYPE_SDR_CAPTURE:
1194 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_g_fmt_sdr_cap))
1195 break;
1196 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg);
be6c64e4
HV		 1197 }
1198 return -EINVAL;
1199}
1200
1201static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
1202 struct file *file, void *fh, void *arg)
1203{
1204 struct v4l2_format *p = arg;
4b20259f
HV		 1205 struct video_device *vfd = video_devdata(file);
1206 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
582c52cb 1207 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
4b20259f
HV		 1208 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1209 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
be6c64e4 1210
d52e2381
LP		 1211 v4l_sanitize_format(p);
1212
be6c64e4
HV		 1213 switch (p->type) {
1214 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1215 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap))
be6c64e4
HV		 1216 break;
1217 CLEAR_AFTER_FIELD(p, fmt.pix);
1218 return ops->vidioc_s_fmt_vid_cap(file, fh, arg);
1219 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1220 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap_mplane))
be6c64e4
HV		 1221 break;
1222 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1223 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
1224 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1225 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_overlay))
be6c64e4
HV		 1226 break;
1227 CLEAR_AFTER_FIELD(p, fmt.win);
1228 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
4b20259f
HV		 1229 case V4L2_BUF_TYPE_VBI_CAPTURE:
1230 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_vbi_cap))
1231 break;
1232 CLEAR_AFTER_FIELD(p, fmt.vbi);
1233 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
1234 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1235 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_cap))
1236 break;
1237 CLEAR_AFTER_FIELD(p, fmt.sliced);
1238 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1239 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1240 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out))
be6c64e4
HV		 1241 break;
1242 CLEAR_AFTER_FIELD(p, fmt.pix);
1243 return ops->vidioc_s_fmt_vid_out(file, fh, arg);
1244 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1245 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_mplane))
be6c64e4
HV		 1246 break;
1247 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1248 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
1249 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 1250 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_overlay))
be6c64e4
HV		 1251 break;
1252 CLEAR_AFTER_FIELD(p, fmt.win);
1253 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1254 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 1255 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_vbi_out))
be6c64e4
HV		 1256 break;
1257 CLEAR_AFTER_FIELD(p, fmt.vbi);
1258 return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
be6c64e4 1259 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 1260 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_out))
be6c64e4
HV		 1261 break;
1262 CLEAR_AFTER_FIELD(p, fmt.sliced);
1263 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
582c52cb
AP		 1264 case V4L2_BUF_TYPE_SDR_CAPTURE:
1265 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_s_fmt_sdr_cap))
1266 break;
1267 CLEAR_AFTER_FIELD(p, fmt.sdr);
1268 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg);
be6c64e4
HV		 1269 }
1270 return -EINVAL;
1271}
1272
1273static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
1274 struct file *file, void *fh, void *arg)
1275{
1276 struct v4l2_format *p = arg;
4b20259f
HV		 1277 struct video_device *vfd = video_devdata(file);
1278 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
582c52cb 1279 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
4b20259f
HV		 1280 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1281 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
be6c64e4 1282
d52e2381
LP		 1283 v4l_sanitize_format(p);
1284
be6c64e4
HV		 1285 switch (p->type) {
1286 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1287 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap))
be6c64e4
HV		 1288 break;
1289 CLEAR_AFTER_FIELD(p, fmt.pix);
1290 return ops->vidioc_try_fmt_vid_cap(file, fh, arg);
1291 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1292 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap_mplane))
be6c64e4
HV		 1293 break;
1294 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1295 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
1296 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1297 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_overlay))
be6c64e4
HV		 1298 break;
1299 CLEAR_AFTER_FIELD(p, fmt.win);
1300 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
4b20259f
HV		 1301 case V4L2_BUF_TYPE_VBI_CAPTURE:
1302 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_vbi_cap))
1303 break;
1304 CLEAR_AFTER_FIELD(p, fmt.vbi);
1305 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
1306 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1307 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_cap))
1308 break;
1309 CLEAR_AFTER_FIELD(p, fmt.sliced);
1310 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1311 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1312 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out))
be6c64e4
HV		 1313 break;
1314 CLEAR_AFTER_FIELD(p, fmt.pix);
1315 return ops->vidioc_try_fmt_vid_out(file, fh, arg);
1316 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1317 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_mplane))
be6c64e4
HV		 1318 break;
1319 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1320 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
1321 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 1322 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_overlay))
be6c64e4
HV		 1323 break;
1324 CLEAR_AFTER_FIELD(p, fmt.win);
1325 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1326 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 1327 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_vbi_out))
be6c64e4
HV		 1328 break;
1329 CLEAR_AFTER_FIELD(p, fmt.vbi);
1330 return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
be6c64e4 1331 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 1332 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_out))
be6c64e4
HV		 1333 break;
1334 CLEAR_AFTER_FIELD(p, fmt.sliced);
1335 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
582c52cb
AP		 1336 case V4L2_BUF_TYPE_SDR_CAPTURE:
1337 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_try_fmt_sdr_cap))
1338 break;
1339 CLEAR_AFTER_FIELD(p, fmt.sdr);
1340 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg);
be6c64e4
HV		 1341 }
1342 return -EINVAL;
1343}
1344
e325b244
HV		 1345static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
1346 struct file *file, void *fh, void *arg)
1347{
1348 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
1349}
1350
1351static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
1352 struct file *file, void *fh, void *arg)
1353{
1354 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
1355}
1356
4b1e2e4d
HV		 1357static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,
1358 struct file *file, void *fh, void *arg)
1359{
1360 struct video_device *vfd = video_devdata(file);
1361 struct v4l2_tuner *p = arg;
82b655bf 1362 int err;
4b1e2e4d
HV		 1363
1364 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1365 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
82b655bf
HV		 1366 err = ops->vidioc_g_tuner(file, fh, p);
1367 if (!err)
1368 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1369 return err;
4b1e2e4d
HV		 1370}
1371
1372static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
1373 struct file *file, void *fh, void *arg)
1374{
1375 struct video_device *vfd = video_devdata(file);
1376 struct v4l2_tuner *p = arg;
1377
1378 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1379 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1380 return ops->vidioc_s_tuner(file, fh, p);
1381}
1382
82b655bf
HV		 1383static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,
1384 struct file *file, void *fh, void *arg)
1385{
1386 struct v4l2_modulator *p = arg;
1387 int err;
1388
1389 err = ops->vidioc_g_modulator(file, fh, p);
1390 if (!err)
1391 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1392 return err;
1393}
1394
4b1e2e4d
HV		 1395static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
1396 struct file *file, void *fh, void *arg)
1397{
1398 struct video_device *vfd = video_devdata(file);
1399 struct v4l2_frequency *p = arg;
1400
84099a28
AP		 1401 if (vfd->vfl_type == VFL_TYPE_SDR)
1402 p->type = V4L2_TUNER_ADC;
1403 else
1404 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1405 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
4b1e2e4d
HV		 1406 return ops->vidioc_g_frequency(file, fh, p);
1407}
1408
1409static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
1410 struct file *file, void *fh, void *arg)
1411{
1412 struct video_device *vfd = video_devdata(file);
b530a447 1413 const struct v4l2_frequency *p = arg;
4b1e2e4d
HV		 1414 enum v4l2_tuner_type type;
1415
84099a28
AP		 1416 if (vfd->vfl_type == VFL_TYPE_SDR) {
1417 if (p->type != V4L2_TUNER_ADC && p->type != V4L2_TUNER_RF)
1418 return -EINVAL;
1419 } else {
1420 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1421 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1422 if (type != p->type)
1423 return -EINVAL;
1424 }
4b1e2e4d
HV		 1425 return ops->vidioc_s_frequency(file, fh, p);
1426}
1427
1428static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
1429 struct file *file, void *fh, void *arg)
1430{
1431 struct video_device *vfd = video_devdata(file);
1432 struct v4l2_standard *p = arg;
1433 v4l2_std_id id = vfd->tvnorms, curr_id = 0;
1434 unsigned int index = p->index, i, j = 0;
1435 const char *descr = "";
1436
a5338190
HV		 1437 /* Return -ENODATA if the tvnorms for the current input
1438 or output is 0, meaning that it doesn't support this API. */
1439 if (id == 0)
1440 return -ENODATA;
1441
4b1e2e4d
HV		 1442 /* Return norm array in a canonical way */
1443 for (i = 0; i <= index && id; i++) {
1444 /* last std value in the standards array is 0, so this
1445 while always ends there since (id & 0) == 0. */
1446 while ((id & standards[j].std) != standards[j].std)
1447 j++;
1448 curr_id = standards[j].std;
1449 descr = standards[j].descr;
1450 j++;
1451 if (curr_id == 0)
1452 break;
1453 if (curr_id != V4L2_STD_PAL &&
1454 curr_id != V4L2_STD_SECAM &&
1455 curr_id != V4L2_STD_NTSC)
1456 id &= ~curr_id;
1457 }
1458 if (i <= index)
1459 return -EINVAL;
1460
1461 v4l2_video_std_construct(p, curr_id, descr);
1462 return 0;
1463}
1464
4b1e2e4d
HV		 1465static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
1466 struct file *file, void *fh, void *arg)
1467{
1468 struct video_device *vfd = video_devdata(file);
314527ac 1469 v4l2_std_id id = *(v4l2_std_id *)arg, norm;
4b1e2e4d 1470
314527ac 1471 norm = id & vfd->tvnorms;
4b1e2e4d
HV		 1472 if (vfd->tvnorms && !norm) /* Check if std is supported */
1473 return -EINVAL;
1474
1475 /* Calls the specific handler */
ca371575 1476 return ops->vidioc_s_std(file, fh, norm);
4b1e2e4d
HV		 1477}
1478
1479static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
1480 struct file *file, void *fh, void *arg)
1481{
1482 struct video_device *vfd = video_devdata(file);
1483 v4l2_std_id *p = arg;
1484
1485 /*
1a2c6866
HV		 1486 * If no signal is detected, then the driver should return
1487 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with
1488 * any standards that do not apply removed.
1489 *
4b1e2e4d
HV		 1490 * This means that tuners, audio and video decoders can join
1491 * their efforts to improve the standards detection.
1492 */
1493 *p = vfd->tvnorms;
1494 return ops->vidioc_querystd(file, fh, arg);
1495}
1496
1497static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
1498 struct file *file, void *fh, void *arg)
1499{
1500 struct video_device *vfd = video_devdata(file);
1501 struct v4l2_hw_freq_seek *p = arg;
1502 enum v4l2_tuner_type type;
1503
84099a28
AP		 1504 /* s_hw_freq_seek is not supported for SDR for now */
1505 if (vfd->vfl_type == VFL_TYPE_SDR)
1506 return -EINVAL;
1507
4b1e2e4d
HV		 1508 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1509 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1510 if (p->type != type)
1511 return -EINVAL;
1512 return ops->vidioc_s_hw_freq_seek(file, fh, p);
1513}
1514
737c097b
HV		 1515static int v4l_overlay(const struct v4l2_ioctl_ops *ops,
1516 struct file *file, void *fh, void *arg)
1517{
1518 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg);
1519}
1520
eb3728ed
HV		 1521static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,
1522 struct file *file, void *fh, void *arg)
1523{
1524 struct v4l2_requestbuffers *p = arg;
4b20259f 1525 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1526
1527 if (ret)
1528 return ret;
1529
633c98e5 1530 CLEAR_AFTER_FIELD(p, memory);
eb3728ed
HV		 1531
1532 return ops->vidioc_reqbufs(file, fh, p);
1533}
1534
1535static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,
1536 struct file *file, void *fh, void *arg)
1537{
1538 struct v4l2_buffer *p = arg;
4b20259f 1539 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1540
1541 return ret ? ret : ops->vidioc_querybuf(file, fh, p);
1542}
1543
1544static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,
1545 struct file *file, void *fh, void *arg)
1546{
1547 struct v4l2_buffer *p = arg;
4b20259f 1548 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1549
1550 return ret ? ret : ops->vidioc_qbuf(file, fh, p);
1551}
1552
1553static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,
1554 struct file *file, void *fh, void *arg)
1555{
1556 struct v4l2_buffer *p = arg;
4b20259f 1557 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1558
1559 return ret ? ret : ops->vidioc_dqbuf(file, fh, p);
1560}
1561
1562static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
1563 struct file *file, void *fh, void *arg)
1564{
1565 struct v4l2_create_buffers *create = arg;
4b20259f 1566 int ret = check_fmt(file, create->format.type);
eb3728ed 1567
d52e2381
LP		 1568 if (ret)
1569 return ret;
1570
1571 v4l_sanitize_format(&create->format);
1572
1573 ret = ops->vidioc_create_bufs(file, fh, create);
1574
1575 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1576 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1577 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1578
1579 return ret;
eb3728ed
HV		 1580}
1581
1582static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
1583 struct file *file, void *fh, void *arg)
1584{
1585 struct v4l2_buffer *b = arg;
4b20259f 1586 int ret = check_fmt(file, b->type);
eb3728ed
HV		 1587
1588 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
1589}
1590
1591static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
1592 struct file *file, void *fh, void *arg)
1593{
eb3728ed
HV		 1594 struct v4l2_streamparm *p = arg;
1595 v4l2_std_id std;
4b20259f 1596 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1597
1598 if (ret)
1599 return ret;
1600 if (ops->vidioc_g_parm)
1601 return ops->vidioc_g_parm(file, fh, p);
eb3728ed
HV		 1602 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1603 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1604 return -EINVAL;
1605 p->parm.capture.readbuffers = 2;
ca371575 1606 ret = ops->vidioc_g_std(file, fh, &std);
eb3728ed 1607 if (ret == 0)
ca371575 1608 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe);
eb3728ed
HV		 1609 return ret;
1610}
1611
1612static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
1613 struct file *file, void *fh, void *arg)
1614{
1615 struct v4l2_streamparm *p = arg;
4b20259f 1616 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1617
1618 return ret ? ret : ops->vidioc_s_parm(file, fh, p);
1619}
1620
efbceecd
HV		 1621static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,
1622 struct file *file, void *fh, void *arg)
1623{
1624 struct video_device *vfd = video_devdata(file);
1625 struct v4l2_queryctrl *p = arg;
7a3ed2d9
HV		 1626 struct v4l2_fh *vfh =
1627 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1628
1629 if (vfh && vfh->ctrl_handler)
1630 return v4l2_queryctrl(vfh->ctrl_handler, p);
1631 if (vfd->ctrl_handler)
1632 return v4l2_queryctrl(vfd->ctrl_handler, p);
1633 if (ops->vidioc_queryctrl)
1634 return ops->vidioc_queryctrl(file, fh, p);
1635 return -ENOTTY;
1636}
1637
e6bee368
HV		 1638static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops,
1639 struct file *file, void *fh, void *arg)
1640{
1641 struct video_device *vfd = video_devdata(file);
1642 struct v4l2_query_ext_ctrl *p = arg;
1643 struct v4l2_fh *vfh =
1644 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1645
1646 if (vfh && vfh->ctrl_handler)
1647 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p);
1648 if (vfd->ctrl_handler)
1649 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p);
1650 if (ops->vidioc_query_ext_ctrl)
1651 return ops->vidioc_query_ext_ctrl(file, fh, p);
1652 return -ENOTTY;
1653}
1654
efbceecd
HV		 1655static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,
1656 struct file *file, void *fh, void *arg)
1657{
1658 struct video_device *vfd = video_devdata(file);
1659 struct v4l2_querymenu *p = arg;
7a3ed2d9
HV		 1660 struct v4l2_fh *vfh =
1661 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1662
1663 if (vfh && vfh->ctrl_handler)
1664 return v4l2_querymenu(vfh->ctrl_handler, p);
1665 if (vfd->ctrl_handler)
1666 return v4l2_querymenu(vfd->ctrl_handler, p);
1667 if (ops->vidioc_querymenu)
1668 return ops->vidioc_querymenu(file, fh, p);
1669 return -ENOTTY;
1670}
1671
1672static int v4l_g_ctrl(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_control *p = arg;
7a3ed2d9
HV		 1677 struct v4l2_fh *vfh =
1678 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1679 struct v4l2_ext_controls ctrls;
1680 struct v4l2_ext_control ctrl;
1681
1682 if (vfh && vfh->ctrl_handler)
1683 return v4l2_g_ctrl(vfh->ctrl_handler, p);
1684 if (vfd->ctrl_handler)
1685 return v4l2_g_ctrl(vfd->ctrl_handler, p);
1686 if (ops->vidioc_g_ctrl)
1687 return ops->vidioc_g_ctrl(file, fh, p);
1688 if (ops->vidioc_g_ext_ctrls == NULL)
1689 return -ENOTTY;
1690
1691 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1692 ctrls.count = 1;
1693 ctrls.controls = &ctrl;
1694 ctrl.id = p->id;
1695 ctrl.value = p->value;
1696 if (check_ext_ctrls(&ctrls, 1)) {
1697 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
1698
1699 if (ret == 0)
1700 p->value = ctrl.value;
1701 return ret;
1702 }
1703 return -EINVAL;
1704}
1705
1706static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,
1707 struct file *file, void *fh, void *arg)
1708{
1709 struct video_device *vfd = video_devdata(file);
1710 struct v4l2_control *p = arg;
7a3ed2d9
HV		 1711 struct v4l2_fh *vfh =
1712 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1713 struct v4l2_ext_controls ctrls;
1714 struct v4l2_ext_control ctrl;
1715
1716 if (vfh && vfh->ctrl_handler)
1717 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
1718 if (vfd->ctrl_handler)
1719 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
1720 if (ops->vidioc_s_ctrl)
1721 return ops->vidioc_s_ctrl(file, fh, p);
1722 if (ops->vidioc_s_ext_ctrls == NULL)
1723 return -ENOTTY;
1724
1725 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1726 ctrls.count = 1;
1727 ctrls.controls = &ctrl;
1728 ctrl.id = p->id;
1729 ctrl.value = p->value;
1730 if (check_ext_ctrls(&ctrls, 1))
1731 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
1732 return -EINVAL;
1733}
1734
1735static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1736 struct file *file, void *fh, void *arg)
1737{
1738 struct video_device *vfd = video_devdata(file);
1739 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 1740 struct v4l2_fh *vfh =
1741 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1742
1743 p->error_idx = p->count;
1744 if (vfh && vfh->ctrl_handler)
1745 return v4l2_g_ext_ctrls(vfh->ctrl_handler, p);
1746 if (vfd->ctrl_handler)
1747 return v4l2_g_ext_ctrls(vfd->ctrl_handler, p);
1748 if (ops->vidioc_g_ext_ctrls == NULL)
1749 return -ENOTTY;
1750 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :
1751 -EINVAL;
1752}
1753
1754static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1755 struct file *file, void *fh, void *arg)
1756{
1757 struct video_device *vfd = video_devdata(file);
1758 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 1759 struct v4l2_fh *vfh =
1760 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1761
1762 p->error_idx = p->count;
1763 if (vfh && vfh->ctrl_handler)
1764 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, p);
1765 if (vfd->ctrl_handler)
1766 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, p);
1767 if (ops->vidioc_s_ext_ctrls == NULL)
1768 return -ENOTTY;
1769 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :
1770 -EINVAL;
1771}
1772
1773static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1774 struct file *file, void *fh, void *arg)
1775{
1776 struct video_device *vfd = video_devdata(file);
1777 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 1778 struct v4l2_fh *vfh =
1779 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1780
1781 p->error_idx = p->count;
1782 if (vfh && vfh->ctrl_handler)
1783 return v4l2_try_ext_ctrls(vfh->ctrl_handler, p);
1784 if (vfd->ctrl_handler)
1785 return v4l2_try_ext_ctrls(vfd->ctrl_handler, p);
1786 if (ops->vidioc_try_ext_ctrls == NULL)
1787 return -ENOTTY;
1788 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :
1789 -EINVAL;
1790}
1791
d84f2d94
HV		 1792static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
1793 struct file *file, void *fh, void *arg)
1794{
1795 struct v4l2_crop *p = arg;
1796 struct v4l2_selection s = {
1797 .type = p->type,
1798 };
1799 int ret;
1800
1801 if (ops->vidioc_g_crop)
1802 return ops->vidioc_g_crop(file, fh, p);
1803 /* simulate capture crop using selection api */
1804
1805 /* crop means compose for output devices */
1806 if (V4L2_TYPE_IS_OUTPUT(p->type))
1807 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
1808 else
1809 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
1810
1811 ret = ops->vidioc_g_selection(file, fh, &s);
1812
1813 /* copying results to old structure on success */
1814 if (!ret)
1815 p->c = s.r;
1816 return ret;
1817}
1818
1819static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
1820 struct file *file, void *fh, void *arg)
1821{
1822 struct v4l2_crop *p = arg;
1823 struct v4l2_selection s = {
1824 .type = p->type,
1825 .r = p->c,
1826 };
1827
1828 if (ops->vidioc_s_crop)
1829 return ops->vidioc_s_crop(file, fh, p);
1830 /* simulate capture crop using selection api */
1831
1832 /* crop means compose for output devices */
1833 if (V4L2_TYPE_IS_OUTPUT(p->type))
1834 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
1835 else
1836 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
1837
1838 return ops->vidioc_s_selection(file, fh, &s);
1839}
1840
1841static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
1842 struct file *file, void *fh, void *arg)
1843{
1844 struct v4l2_cropcap *p = arg;
1845 struct v4l2_selection s = { .type = p->type };
1846 int ret;
1847
1848 if (ops->vidioc_cropcap)
1849 return ops->vidioc_cropcap(file, fh, p);
1850
1851 /* obtaining bounds */
1852 if (V4L2_TYPE_IS_OUTPUT(p->type))
1853 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
1854 else
1855 s.target = V4L2_SEL_TGT_CROP_BOUNDS;
1856
1857 ret = ops->vidioc_g_selection(file, fh, &s);
1858 if (ret)
1859 return ret;
1860 p->bounds = s.r;
1861
1862 /* obtaining defrect */
1863 if (V4L2_TYPE_IS_OUTPUT(p->type))
1864 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
1865 else
1866 s.target = V4L2_SEL_TGT_CROP_DEFAULT;
1867
1868 ret = ops->vidioc_g_selection(file, fh, &s);
1869 if (ret)
1870 return ret;
1871 p->defrect = s.r;
1872
1873 /* setting trivial pixelaspect */
1874 p->pixelaspect.numerator = 1;
1875 p->pixelaspect.denominator = 1;
1876 return 0;
1877}
1878
f16f77b0
HV		 1879static int v4l_log_status(const struct v4l2_ioctl_ops *ops,
1880 struct file *file, void *fh, void *arg)
1881{
1882 struct video_device *vfd = video_devdata(file);
1883 int ret;
1884
1885 if (vfd->v4l2_dev)
1886 pr_info("%s: ================= START STATUS =================\n",
1887 vfd->v4l2_dev->name);
1888 ret = ops->vidioc_log_status(file, fh);
1889 if (vfd->v4l2_dev)
1890 pr_info("%s: ================== END STATUS ==================\n",
1891 vfd->v4l2_dev->name);
1892 return ret;
1893}
1894
1895static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
1896 struct file *file, void *fh, void *arg)
1897{
1898#ifdef CONFIG_VIDEO_ADV_DEBUG
1899 struct v4l2_dbg_register *p = arg;
79b0c640
HV		 1900 struct video_device *vfd = video_devdata(file);
1901 struct v4l2_subdev *sd;
1902 int idx = 0;
f16f77b0
HV		 1903
1904 if (!capable(CAP_SYS_ADMIN))
1905 return -EPERM;
3eef2510 1906 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
79b0c640
HV		 1907 if (vfd->v4l2_dev == NULL)
1908 return -EINVAL;
3eef2510
HV		 1909 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
1910 if (p->match.addr == idx++)
79b0c640 1911 return v4l2_subdev_call(sd, core, g_register, p);
79b0c640
HV		 1912 return -EINVAL;
1913 }
191b79b0
HV		 1914 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
1915 (ops->vidioc_g_chip_info || p->match.addr == 0))
79b0c640
HV		 1916 return ops->vidioc_g_register(file, fh, p);
1917 return -EINVAL;
f16f77b0
HV		 1918#else
1919 return -ENOTTY;
1920#endif
1921}
1922
1923static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
1924 struct file *file, void *fh, void *arg)
1925{
1926#ifdef CONFIG_VIDEO_ADV_DEBUG
977ba3b1 1927 const struct v4l2_dbg_register *p = arg;
79b0c640
HV		 1928 struct video_device *vfd = video_devdata(file);
1929 struct v4l2_subdev *sd;
1930 int idx = 0;
f16f77b0
HV		 1931
1932 if (!capable(CAP_SYS_ADMIN))
1933 return -EPERM;
3eef2510 1934 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
79b0c640
HV		 1935 if (vfd->v4l2_dev == NULL)
1936 return -EINVAL;
3eef2510
HV		 1937 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
1938 if (p->match.addr == idx++)
79b0c640 1939 return v4l2_subdev_call(sd, core, s_register, p);
79b0c640
HV		 1940 return -EINVAL;
1941 }
191b79b0
HV		 1942 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
1943 (ops->vidioc_g_chip_info || p->match.addr == 0))
79b0c640
HV		 1944 return ops->vidioc_s_register(file, fh, p);
1945 return -EINVAL;
f16f77b0
HV		 1946#else
1947 return -ENOTTY;
1948#endif
1949}
1950
96b03d2a 1951static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,
79b0c640
HV		 1952 struct file *file, void *fh, void *arg)
1953{
cd634f1b 1954#ifdef CONFIG_VIDEO_ADV_DEBUG
79b0c640 1955 struct video_device *vfd = video_devdata(file);
96b03d2a 1956 struct v4l2_dbg_chip_info *p = arg;
79b0c640
HV		 1957 struct v4l2_subdev *sd;
1958 int idx = 0;
1959
1960 switch (p->match.type) {
1961 case V4L2_CHIP_MATCH_BRIDGE:
79b0c640
HV		 1962 if (ops->vidioc_s_register)
1963 p->flags |= V4L2_CHIP_FL_WRITABLE;
1964 if (ops->vidioc_g_register)
1965 p->flags |= V4L2_CHIP_FL_READABLE;
1c1d86a1 1966 strlcpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));
96b03d2a
HV		 1967 if (ops->vidioc_g_chip_info)
1968 return ops->vidioc_g_chip_info(file, fh, arg);
0f0fe4b9
HV		 1969 if (p->match.addr)
1970 return -EINVAL;
79b0c640
HV		 1971 return 0;
1972
3eef2510 1973 case V4L2_CHIP_MATCH_SUBDEV:
79b0c640
HV		 1974 if (vfd->v4l2_dev == NULL)
1975 break;
1976 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {
3eef2510
HV		 1977 if (p->match.addr != idx++)
1978 continue;
1979 if (sd->ops->core && sd->ops->core->s_register)
1980 p->flags |= V4L2_CHIP_FL_WRITABLE;
1981 if (sd->ops->core && sd->ops->core->g_register)
1982 p->flags |= V4L2_CHIP_FL_READABLE;
1983 strlcpy(p->name, sd->name, sizeof(p->name));
1984 return 0;
79b0c640
HV		 1985 }
1986 break;
1987 }
1988 return -EINVAL;
cd634f1b
HV		 1989#else
1990 return -ENOTTY;
1991#endif
79b0c640
HV		 1992}
1993
458aa4a6
HV		 1994static int v4l_dqevent(const struct v4l2_ioctl_ops *ops,
1995 struct file *file, void *fh, void *arg)
1996{
1997 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK);
1998}
1999
2000static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,
2001 struct file *file, void *fh, void *arg)
2002{
2003 return ops->vidioc_subscribe_event(fh, arg);
2004}
2005
2006static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,
2007 struct file *file, void *fh, void *arg)
2008{
2009 return ops->vidioc_unsubscribe_event(fh, arg);
2010}
2011
2012static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,
2013 struct file *file, void *fh, void *arg)
2014{
2015 struct v4l2_sliced_vbi_cap *p = arg;
4b20259f
HV		 2016 int ret = check_fmt(file, p->type);
2017
2018 if (ret)
2019 return ret;
458aa4a6
HV		 2020
2021 /* Clear up to type, everything after type is zeroed already */
2022 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
2023
2024 return ops->vidioc_g_sliced_vbi_cap(file, fh, p);
2025}
2026
82b655bf
HV		 2027static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
2028 struct file *file, void *fh, void *arg)
2029{
2030 struct video_device *vfd = video_devdata(file);
2031 struct v4l2_frequency_band *p = arg;
2032 enum v4l2_tuner_type type;
2033 int err;
2034
84099a28
AP		 2035 if (vfd->vfl_type == VFL_TYPE_SDR) {
2036 if (p->type != V4L2_TUNER_ADC && p->type != V4L2_TUNER_RF)
2037 return -EINVAL;
2038 type = p->type;
2039 } else {
2040 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2041 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2042 if (type != p->type)
2043 return -EINVAL;
2044 }
a7f404af
HV		 2045 if (ops->vidioc_enum_freq_bands) {
2046 err = ops->vidioc_enum_freq_bands(file, fh, p);
2047 if (err != -ENOTTY)
2048 return err;
2049 }
73f35418 2050 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) {
82b655bf
HV		 2051 struct v4l2_tuner t = {
2052 .index = p->tuner,
2053 .type = type,
2054 };
2055
aa4d9b53
HV		 2056 if (p->index)
2057 return -EINVAL;
82b655bf
HV		 2058 err = ops->vidioc_g_tuner(file, fh, &t);
2059 if (err)
2060 return err;
2061 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2062 p->rangelow = t.rangelow;
2063 p->rangehigh = t.rangehigh;
2064 p->modulation = (type == V4L2_TUNER_RADIO) ?
2065 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2066 return 0;
2067 }
73f35418 2068 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) {
82b655bf
HV		 2069 struct v4l2_modulator m = {
2070 .index = p->tuner,
2071 };
2072
2073 if (type != V4L2_TUNER_RADIO)
2074 return -EINVAL;
aa4d9b53
HV		 2075 if (p->index)
2076 return -EINVAL;
82b655bf
HV		 2077 err = ops->vidioc_g_modulator(file, fh, &m);
2078 if (err)
2079 return err;
2080 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2081 p->rangelow = m.rangelow;
2082 p->rangehigh = m.rangehigh;
2083 p->modulation = (type == V4L2_TUNER_RADIO) ?
2084 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2085 return 0;
2086 }
2087 return -ENOTTY;
2088}
2089
4839e6c2
HV		 2090struct v4l2_ioctl_info {
2091 unsigned int ioctl;
27cd2aba 2092 u32 flags;
4839e6c2 2093 const char * const name;
86748f35
HV		 2094 union {
2095 u32 offset;
2096 int (*func)(const struct v4l2_ioctl_ops *ops,
2097 struct file *file, void *fh, void *p);
26ddcbcc 2098 } u;
86748f35 2099 void (*debug)(const void *arg, bool write_only);
4839e6c2
HV		 2100};
2101
2102/* This control needs a priority check */
2103#define INFO_FL_PRIO (1 << 0)
2104/* This control can be valid if the filehandle passes a control handler. */
2105#define INFO_FL_CTRL (1 << 1)
86748f35
HV		 2106/* This is a standard ioctl, no need for special code */
2107#define INFO_FL_STD (1 << 2)
2108/* This is ioctl has its own function */
2109#define INFO_FL_FUNC (1 << 3)
5a5adf6b
HV		 2110/* Queuing ioctl */
2111#define INFO_FL_QUEUE (1 << 4)
27cd2aba
HV		 2112/* Zero struct from after the field to the end */
2113#define INFO_FL_CLEAR(v4l2_struct, field) \
2114 ((offsetof(struct v4l2_struct, field) + \
2115 sizeof(((struct v4l2_struct *)0)->field)) << 16)
2116#define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
4839e6c2 2117
86748f35
HV		 2118#define IOCTL_INFO_STD(_ioctl, _vidioc, _debug, _flags) \
2119 [_IOC_NR(_ioctl)] = { \
2120 .ioctl = _ioctl, \
2121 .flags = _flags | INFO_FL_STD, \
2122 .name = #_ioctl, \
26ddcbcc 2123 .u.offset = offsetof(struct v4l2_ioctl_ops, _vidioc), \
86748f35
HV		 2124 .debug = _debug, \
2125 }
2126
2127#define IOCTL_INFO_FNC(_ioctl, _func, _debug, _flags) \
2128 [_IOC_NR(_ioctl)] = { \
2129 .ioctl = _ioctl, \
2130 .flags = _flags | INFO_FL_FUNC, \
2131 .name = #_ioctl, \
26ddcbcc 2132 .u.func = _func, \
86748f35
HV		 2133 .debug = _debug, \
2134 }
2135
4839e6c2 2136static struct v4l2_ioctl_info v4l2_ioctls[] = {
59076122 2137 IOCTL_INFO_FNC(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
be6c64e4
HV		 2138 IOCTL_INFO_FNC(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)),
2139 IOCTL_INFO_FNC(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, INFO_FL_CLEAR(v4l2_format, type)),
2140 IOCTL_INFO_FNC(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
5a5adf6b
HV		 2141 IOCTL_INFO_FNC(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2142 IOCTL_INFO_FNC(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
be6c64e4
HV		 2143 IOCTL_INFO_STD(VIDIOC_G_FBUF, vidioc_g_fbuf, v4l_print_framebuffer, 0),
2144 IOCTL_INFO_STD(VIDIOC_S_FBUF, vidioc_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
737c097b 2145 IOCTL_INFO_FNC(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO),
5a5adf6b 2146 IOCTL_INFO_FNC(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),
b799d09a 2147 IOCTL_INFO_STD(VIDIOC_EXPBUF, vidioc_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)),
5a5adf6b
HV		 2148 IOCTL_INFO_FNC(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),
2149 IOCTL_INFO_FNC(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2150 IOCTL_INFO_FNC(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
eb3728ed
HV		 2151 IOCTL_INFO_FNC(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
2152 IOCTL_INFO_FNC(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
ca371575 2153 IOCTL_INFO_STD(VIDIOC_G_STD, vidioc_g_std, v4l_print_std, 0),
4b1e2e4d
HV		 2154 IOCTL_INFO_FNC(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
2155 IOCTL_INFO_FNC(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
59076122 2156 IOCTL_INFO_FNC(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
efbceecd
HV		 2157 IOCTL_INFO_FNC(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
2158 IOCTL_INFO_FNC(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
4b1e2e4d
HV		 2159 IOCTL_INFO_FNC(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
2160 IOCTL_INFO_FNC(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
59076122
HV		 2161 IOCTL_INFO_STD(VIDIOC_G_AUDIO, vidioc_g_audio, v4l_print_audio, 0),
2162 IOCTL_INFO_STD(VIDIOC_S_AUDIO, vidioc_s_audio, v4l_print_audio, INFO_FL_PRIO),
efbceecd
HV		 2163 IOCTL_INFO_FNC(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
2164 IOCTL_INFO_FNC(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
59076122
HV		 2165 IOCTL_INFO_STD(VIDIOC_G_INPUT, vidioc_g_input, v4l_print_u32, 0),
2166 IOCTL_INFO_FNC(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
f9402a94
HV		 2167 IOCTL_INFO_STD(VIDIOC_G_EDID, vidioc_g_edid, v4l_print_edid, 0),
2168 IOCTL_INFO_STD(VIDIOC_S_EDID, vidioc_s_edid, v4l_print_edid, INFO_FL_PRIO),
59076122
HV		 2169 IOCTL_INFO_STD(VIDIOC_G_OUTPUT, vidioc_g_output, v4l_print_u32, 0),
2170 IOCTL_INFO_FNC(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
2171 IOCTL_INFO_FNC(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
2172 IOCTL_INFO_STD(VIDIOC_G_AUDOUT, vidioc_g_audout, v4l_print_audioout, 0),
2173 IOCTL_INFO_STD(VIDIOC_S_AUDOUT, vidioc_s_audout, v4l_print_audioout, INFO_FL_PRIO),
82b655bf 2174 IOCTL_INFO_FNC(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
4b1e2e4d
HV		 2175 IOCTL_INFO_STD(VIDIOC_S_MODULATOR, vidioc_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
2176 IOCTL_INFO_FNC(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
2177 IOCTL_INFO_FNC(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
d84f2d94
HV		 2178 IOCTL_INFO_FNC(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
2179 IOCTL_INFO_FNC(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
2180 IOCTL_INFO_FNC(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
2181 IOCTL_INFO_STD(VIDIOC_G_SELECTION, vidioc_g_selection, v4l_print_selection, 0),
2182 IOCTL_INFO_STD(VIDIOC_S_SELECTION, vidioc_s_selection, v4l_print_selection, INFO_FL_PRIO),
d806f2df
HV		 2183 IOCTL_INFO_STD(VIDIOC_G_JPEGCOMP, vidioc_g_jpegcomp, v4l_print_jpegcompression, 0),
2184 IOCTL_INFO_STD(VIDIOC_S_JPEGCOMP, vidioc_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
4b1e2e4d 2185 IOCTL_INFO_FNC(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
be6c64e4 2186 IOCTL_INFO_FNC(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
59076122
HV		 2187 IOCTL_INFO_STD(VIDIOC_ENUMAUDIO, vidioc_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
2188 IOCTL_INFO_STD(VIDIOC_ENUMAUDOUT, vidioc_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
d0547cba
HV		 2189 IOCTL_INFO_FNC(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
2190 IOCTL_INFO_FNC(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
458aa4a6 2191 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 2192 IOCTL_INFO_FNC(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
efbceecd
HV		 2193 IOCTL_INFO_FNC(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2194 IOCTL_INFO_FNC(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL),
9bc31633 2195 IOCTL_INFO_FNC(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
458aa4a6
HV		 2196 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMESIZES, vidioc_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
2197 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMEINTERVALS, vidioc_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
d806f2df
HV		 2198 IOCTL_INFO_STD(VIDIOC_G_ENC_INDEX, vidioc_g_enc_index, v4l_print_enc_idx, 0),
2199 IOCTL_INFO_STD(VIDIOC_ENCODER_CMD, vidioc_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2200 IOCTL_INFO_STD(VIDIOC_TRY_ENCODER_CMD, vidioc_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2201 IOCTL_INFO_STD(VIDIOC_DECODER_CMD, vidioc_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
2202 IOCTL_INFO_STD(VIDIOC_TRY_DECODER_CMD, vidioc_try_decoder_cmd, v4l_print_decoder_cmd, 0),
f16f77b0
HV		 2203 IOCTL_INFO_FNC(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
2204 IOCTL_INFO_FNC(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
4b1e2e4d 2205 IOCTL_INFO_FNC(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
efc626b0
HV		 2206 IOCTL_INFO_STD(VIDIOC_S_DV_TIMINGS, vidioc_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO),
2207 IOCTL_INFO_STD(VIDIOC_G_DV_TIMINGS, vidioc_g_dv_timings, v4l_print_dv_timings, 0),
458aa4a6
HV		 2208 IOCTL_INFO_FNC(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
2209 IOCTL_INFO_FNC(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
2210 IOCTL_INFO_FNC(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
5a5adf6b
HV		 2211 IOCTL_INFO_FNC(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2212 IOCTL_INFO_FNC(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
efc626b0
HV		 2213 IOCTL_INFO_STD(VIDIOC_ENUM_DV_TIMINGS, vidioc_enum_dv_timings, v4l_print_enum_dv_timings, 0),
2214 IOCTL_INFO_STD(VIDIOC_QUERY_DV_TIMINGS, vidioc_query_dv_timings, v4l_print_dv_timings, 0),
a1acb8f9 2215 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 2216 IOCTL_INFO_FNC(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
96b03d2a 2217 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)),
e6bee368 2218 IOCTL_INFO_FNC(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
4839e6c2
HV		 2219};
2220#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
2221
2222bool v4l2_is_known_ioctl(unsigned int cmd)
2223{
2224 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2225 return false;
2226 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
2227}
2228
5a5adf6b
HV		 2229struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd)
2230{
2231 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2232 return vdev->lock;
2233 if (test_bit(_IOC_NR(cmd), vdev->disable_locking))
2234 return NULL;
2235 if (vdev->queue && vdev->queue->lock &&
2236 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
2237 return vdev->queue->lock;
2238 return vdev->lock;
2239}
2240
4839e6c2
HV		 2241/* Common ioctl debug function. This function can be used by
2242 external ioctl messages as well as internal V4L ioctl */
4a085168 2243void v4l_printk_ioctl(const char *prefix, unsigned int cmd)
4839e6c2 2244{
86748f35 2245 const char *dir, *type;
4839e6c2 2246
4a085168
HV		 2247 if (prefix)
2248 printk(KERN_DEBUG "%s: ", prefix);
2249
4839e6c2
HV		 2250 switch (_IOC_TYPE(cmd)) {
2251 case 'd':
2252 type = "v4l2_int";
2253 break;
2254 case 'V':
2255 if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
2256 type = "v4l2";
2257 break;
2258 }
86748f35 2259 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
4839e6c2
HV		 2260 return;
2261 default:
2262 type = "unknown";
86748f35 2263 break;
4839e6c2
HV		 2264 }
2265
2266 switch (_IOC_DIR(cmd)) {
2267 case _IOC_NONE: dir = "--"; break;
2268 case _IOC_READ: dir = "r-"; break;
2269 case _IOC_WRITE: dir = "-w"; break;
2270 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
2271 default: dir = "*ERR*"; break;
2272 }
86748f35 2273 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
4839e6c2
HV		 2274 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
2275}
2276EXPORT_SYMBOL(v4l_printk_ioctl);
2277
069b7479 2278static long __video_do_ioctl(struct file *file,
35ea11ff
HV		 2279 unsigned int cmd, void *arg)
2280{
2281 struct video_device *vfd = video_devdata(file);
a399810c 2282 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
86748f35
HV		 2283 bool write_only = false;
2284 struct v4l2_ioctl_info default_info;
2285 const struct v4l2_ioctl_info *info;
d5fbf32f 2286 void *fh = file->private_data;
99cd47bc 2287 struct v4l2_fh *vfh = NULL;
80131fe0 2288 int debug = vfd->debug;
9190d191 2289 long ret = -ENOTTY;
35ea11ff 2290
6a717883 2291 if (ops == NULL) {
4a085168
HV		 2292 pr_warn("%s: has no ioctl_ops.\n",
2293 video_device_node_name(vfd));
9190d191 2294 return ret;
6a717883
HV		 2295 }
2296
b7284bb0 2297 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
99cd47bc
HV		 2298 vfh = file->private_data;
2299
48ea0be0 2300 if (v4l2_is_known_ioctl(cmd)) {
86748f35 2301 info = &v4l2_ioctls[_IOC_NR(cmd)];
48ea0be0
HV		 2302
2303 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) &&
2304 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
86748f35 2305 goto done;
4b902fec 2306
b7284bb0 2307 if (vfh && (info->flags & INFO_FL_PRIO)) {
4b902fec
HV		 2308 ret = v4l2_prio_check(vfd->prio, vfh->prio);
2309 if (ret)
86748f35 2310 goto done;
4b902fec 2311 }
86748f35
HV		 2312 } else {
2313 default_info.ioctl = cmd;
2314 default_info.flags = 0;
f18d8e07 2315 default_info.debug = v4l_print_default;
86748f35 2316 info = &default_info;
48ea0be0
HV		 2317 }
2318
86748f35 2319 write_only = _IOC_DIR(cmd) == _IOC_WRITE;
86748f35
HV		 2320 if (info->flags & INFO_FL_STD) {
2321 typedef int (*vidioc_op)(struct file *file, void *fh, void *p);
2322 const void *p = vfd->ioctl_ops;
26ddcbcc 2323 const vidioc_op *vidioc = p + info->u.offset;
86748f35
HV		 2324
2325 ret = (*vidioc)(file, fh, arg);
86748f35 2326 } else if (info->flags & INFO_FL_FUNC) {
26ddcbcc 2327 ret = info->u.func(ops, file, fh, arg);
f18d8e07
HV		 2328 } else if (!ops->vidioc_default) {
2329 ret = -ENOTTY;
2330 } else {
2331 ret = ops->vidioc_default(file, fh,
b7284bb0 2332 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
f18d8e07 2333 cmd, arg);
48ea0be0 2334 }
99cd47bc 2335
86748f35 2336done:
80131fe0 2337 if (debug) {
4a085168 2338 v4l_printk_ioctl(video_device_node_name(vfd), cmd);
86748f35 2339 if (ret < 0)
505d04bd
HV		 2340 pr_cont(": error %ld", ret);
2341 if (debug == V4L2_DEBUG_IOCTL)
86748f35 2342 pr_cont("\n");
86748f35
HV		 2343 else if (_IOC_DIR(cmd) == _IOC_NONE)
2344 info->debug(arg, write_only);
2345 else {
2346 pr_cont(": ");
2347 info->debug(arg, write_only);
35ea11ff
HV		 2348 }
2349 }
2350
2351 return ret;
2352}
2353
d14e6d76 2354static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
ba2d35c1 2355 void __user **user_ptr, void ***kernel_ptr)
d14e6d76
PO		 2356{
2357 int ret = 0;
2358
2359 switch (cmd) {
96b1a702 2360 case VIDIOC_PREPARE_BUF:
d14e6d76
PO		 2361 case VIDIOC_QUERYBUF:
2362 case VIDIOC_QBUF:
2363 case VIDIOC_DQBUF: {
2364 struct v4l2_buffer *buf = parg;
2365
2366 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
2367 if (buf->length > VIDEO_MAX_PLANES) {
2368 ret = -EINVAL;
2369 break;
2370 }
2371 *user_ptr = (void __user *)buf->m.planes;
ba2d35c1 2372 *kernel_ptr = (void **)&buf->m.planes;
d14e6d76
PO		 2373 *array_size = sizeof(struct v4l2_plane) * buf->length;
2374 ret = 1;
2375 }
2376 break;
2377 }
2378
dd519bb3
HV		 2379 case VIDIOC_G_EDID:
2380 case VIDIOC_S_EDID: {
2381 struct v4l2_edid *edid = parg;
ed45ce2c
HV		 2382
2383 if (edid->blocks) {
1b8b10cc
HV		 2384 if (edid->blocks > 256) {
2385 ret = -EINVAL;
2386 break;
2387 }
ed45ce2c 2388 *user_ptr = (void __user *)edid->edid;
ba2d35c1 2389 *kernel_ptr = (void **)&edid->edid;
ed45ce2c
HV		 2390 *array_size = edid->blocks * 128;
2391 ret = 1;
2392 }
2393 break;
2394 }
2395
d14e6d76
PO		 2396 case VIDIOC_S_EXT_CTRLS:
2397 case VIDIOC_G_EXT_CTRLS:
2398 case VIDIOC_TRY_EXT_CTRLS: {
2399 struct v4l2_ext_controls *ctrls = parg;
2400
2401 if (ctrls->count != 0) {
6c06108b
DC		 2402 if (ctrls->count > V4L2_CID_MAX_CTRLS) {
2403 ret = -EINVAL;
2404 break;
2405 }
d14e6d76 2406 *user_ptr = (void __user *)ctrls->controls;
ba2d35c1 2407 *kernel_ptr = (void **)&ctrls->controls;
d14e6d76
PO		 2408 *array_size = sizeof(struct v4l2_ext_control)
2409 * ctrls->count;
2410 ret = 1;
2411 }
2412 break;
2413 }
2414 }
2415
2416 return ret;
2417}
2418
fc0a8079
LP		 2419long
2420video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
2421 v4l2_kioctl func)
35ea11ff
HV		 2422{
2423 char sbuf[128];
2424 void *mbuf = NULL;
1d94aa36 2425 void *parg = (void *)arg;
069b7479 2426 long err = -EINVAL;
d14e6d76
PO		 2427 bool has_array_args;
2428 size_t array_size = 0;
35ea11ff 2429 void __user *user_ptr = NULL;
d14e6d76 2430 void **kernel_ptr = NULL;
35ea11ff 2431
35ea11ff 2432 /* Copy arguments into temp kernel buffer */
337f9d20 2433 if (_IOC_DIR(cmd) != _IOC_NONE) {
35ea11ff
HV		 2434 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
2435 parg = sbuf;
2436 } else {
2437 /* too big to allocate from stack */
2438 mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
2439 if (NULL == mbuf)
2440 return -ENOMEM;
2441 parg = mbuf;
2442 }
2443
2444 err = -EFAULT;
19c96e4b 2445 if (_IOC_DIR(cmd) & _IOC_WRITE) {
27cd2aba
HV		 2446 unsigned int n = _IOC_SIZE(cmd);
2447
2448 /*
2449 * In some cases, only a few fields are used as input,
2450 * i.e. when the app sets "index" and then the driver
2451 * fills in the rest of the structure for the thing
2452 * with that index. We only need to copy up the first
2453 * non-input field.
2454 */
2455 if (v4l2_is_known_ioctl(cmd)) {
2456 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags;
2457 if (flags & INFO_FL_CLEAR_MASK)
2458 n = (flags & INFO_FL_CLEAR_MASK) >> 16;
2459 }
19c96e4b
TP		 2460
2461 if (copy_from_user(parg, (void __user *)arg, n))
35ea11ff 2462 goto out;
19c96e4b
TP		 2463
2464 /* zero out anything we don't copy from userspace */
2465 if (n < _IOC_SIZE(cmd))
2466 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n);
337f9d20
TP		 2467 } else {
2468 /* read-only ioctl */
2469 memset(parg, 0, _IOC_SIZE(cmd));
19c96e4b 2470 }
35ea11ff
HV		 2471 }
2472
d14e6d76
PO		 2473 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
2474 if (err < 0)
2475 goto out;
2476 has_array_args = err;
35ea11ff 2477
d14e6d76
PO		 2478 if (has_array_args) {
2479 /*
2480 * When adding new types of array args, make sure that the
2481 * parent argument to ioctl (which contains the pointer to the
2482 * array) fits into sbuf (so that mbuf will still remain
2483 * unused up to here).
2484 */
2485 mbuf = kmalloc(array_size, GFP_KERNEL);
2486 err = -ENOMEM;
2487 if (NULL == mbuf)
2488 goto out_array_args;
2489 err = -EFAULT;
2490 if (copy_from_user(mbuf, user_ptr, array_size))
2491 goto out_array_args;
2492 *kernel_ptr = mbuf;
35ea11ff
HV		 2493 }
2494
2495 /* Handles IOCTL */
fc0a8079 2496 err = func(file, cmd, parg);
35ea11ff 2497 if (err == -ENOIOCTLCMD)
02bbb814 2498 err = -ENOTTY;
aa32f4c0
HV		 2499 if (err == 0) {
2500 if (cmd == VIDIOC_DQBUF)
2501 trace_v4l2_dqbuf(video_devdata(file)->minor, parg);
2502 else if (cmd == VIDIOC_QBUF)
2503 trace_v4l2_qbuf(video_devdata(file)->minor, parg);
2504 }
35ea11ff 2505
d14e6d76 2506 if (has_array_args) {
ba2d35c1 2507 *kernel_ptr = (void __force *)user_ptr;
d14e6d76 2508 if (copy_to_user(user_ptr, mbuf, array_size))
35ea11ff 2509 err = -EFAULT;
d14e6d76 2510 goto out_array_args;
35ea11ff 2511 }
5d7758ee
HV		 2512 /* VIDIOC_QUERY_DV_TIMINGS can return an error, but still have valid
2513 results that must be returned. */
2514 if (err < 0 && cmd != VIDIOC_QUERY_DV_TIMINGS)
35ea11ff
HV		 2515 goto out;
2516
d14e6d76 2517out_array_args:
35ea11ff
HV		 2518 /* Copy results into user buffer */
2519 switch (_IOC_DIR(cmd)) {
2520 case _IOC_READ:
2521 case (_IOC_WRITE | _IOC_READ):
2522 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
2523 err = -EFAULT;
2524 break;
2525 }
2526
2527out:
2528 kfree(mbuf);
2529 return err;
2530}
fc0a8079
LP		 2531EXPORT_SYMBOL(video_usercopy);
2532
2533long video_ioctl2(struct file *file,
2534 unsigned int cmd, unsigned long arg)
2535{
2536 return video_usercopy(file, cmd, arg, __video_do_ioctl);
2537}
8a522c91 2538EXPORT_SYMBOL(video_ioctl2);
Linux kernel - Deliverables
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