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[media] v4l2: allow v4l2_subdev_edid to be used with video nodes
[mirror_ubuntu-bionic-kernel.git] / drivers / media / v4l2-core / v4l2-ioctl.c
CommitLineData
35ea11ff
HV		 1/*
2 * Video capture interface for Linux version 2
3 *
4 * A generic framework to process V4L2 ioctl commands.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
d9b01449 11 * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1)
35ea11ff
HV		 12 * Mauro Carvalho Chehab <mchehab@infradead.org> (version 2)
13 */
14
15#include <linux/module.h>
5a0e3ad6 16#include <linux/slab.h>
35ea11ff
HV		 17#include <linux/types.h>
18#include <linux/kernel.h>
ae6db515 19#include <linux/version.h>
35ea11ff 20
35ea11ff
HV		 21#include <linux/videodev2.h>
22
35ea11ff
HV		 23#include <media/v4l2-common.h>
24#include <media/v4l2-ioctl.h>
11bbc1ca 25#include <media/v4l2-ctrls.h>
d3d7c963
SA		 26#include <media/v4l2-fh.h>
27#include <media/v4l2-event.h>
99cd47bc 28#include <media/v4l2-device.h>
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;
582c52cb 249 const struct v4l2_format_sdr *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, "
560dde24 259 "bytesperline=%u, sizeimage=%u, colorspace=%d\n",
be6c64e4
HV		 260 pix->width, pix->height,
261 (pix->pixelformat & 0xff),
262 (pix->pixelformat >> 8) & 0xff,
263 (pix->pixelformat >> 16) & 0xff,
264 (pix->pixelformat >> 24) & 0xff,
265 prt_names(pix->field, v4l2_field_names),
266 pix->bytesperline, pix->sizeimage,
267 pix->colorspace);
268 break;
269 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
270 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
271 mp = &p->fmt.pix_mp;
272 pr_cont(", width=%u, height=%u, "
273 "format=%c%c%c%c, field=%s, "
274 "colorspace=%d, num_planes=%u\n",
275 mp->width, mp->height,
276 (mp->pixelformat & 0xff),
277 (mp->pixelformat >> 8) & 0xff,
278 (mp->pixelformat >> 16) & 0xff,
279 (mp->pixelformat >> 24) & 0xff,
280 prt_names(mp->field, v4l2_field_names),
281 mp->colorspace, mp->num_planes);
282 for (i = 0; i < mp->num_planes; i++)
283 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i,
284 mp->plane_fmt[i].bytesperline,
285 mp->plane_fmt[i].sizeimage);
286 break;
287 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
288 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
289 win = &p->fmt.win;
560dde24
HV		 290 /* Note: we can't print the clip list here since the clips
291 * pointer is a userspace pointer, not a kernelspace
292 * pointer. */
293 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",
294 win->w.width, win->w.height, win->w.left, win->w.top,
be6c64e4 295 prt_names(win->field, v4l2_field_names),
560dde24
HV		 296 win->chromakey, win->clipcount, win->clips,
297 win->bitmap, win->global_alpha);
be6c64e4
HV		 298 break;
299 case V4L2_BUF_TYPE_VBI_CAPTURE:
300 case V4L2_BUF_TYPE_VBI_OUTPUT:
301 vbi = &p->fmt.vbi;
302 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, "
303 "sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n",
304 vbi->sampling_rate, vbi->offset,
305 vbi->samples_per_line,
306 (vbi->sample_format & 0xff),
307 (vbi->sample_format >> 8) & 0xff,
308 (vbi->sample_format >> 16) & 0xff,
309 (vbi->sample_format >> 24) & 0xff,
310 vbi->start[0], vbi->start[1],
311 vbi->count[0], vbi->count[1]);
312 break;
313 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
314 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
315 sliced = &p->fmt.sliced;
316 pr_cont(", service_set=0x%08x, io_size=%d\n",
317 sliced->service_set, sliced->io_size);
318 for (i = 0; i < 24; i++)
319 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
320 sliced->service_lines[0][i],
321 sliced->service_lines[1][i]);
322 break;
582c52cb
AP		 323 case V4L2_BUF_TYPE_SDR_CAPTURE:
324 sdr = &p->fmt.sdr;
325 pr_cont(", pixelformat=%c%c%c%c\n",
326 (sdr->pixelformat >> 0) & 0xff,
327 (sdr->pixelformat >> 8) & 0xff,
328 (sdr->pixelformat >> 16) & 0xff,
329 (sdr->pixelformat >> 24) & 0xff);
330 break;
be6c64e4
HV		 331 }
332}
333
334static void v4l_print_framebuffer(const void *arg, bool write_only)
335{
336 const struct v4l2_framebuffer *p = arg;
337
338 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, "
339 "height=%u, pixelformat=%c%c%c%c, "
560dde24 340 "bytesperline=%u, sizeimage=%u, colorspace=%d\n",
be6c64e4
HV		 341 p->capability, p->flags, p->base,
342 p->fmt.width, p->fmt.height,
343 (p->fmt.pixelformat & 0xff),
344 (p->fmt.pixelformat >> 8) & 0xff,
345 (p->fmt.pixelformat >> 16) & 0xff,
346 (p->fmt.pixelformat >> 24) & 0xff,
347 p->fmt.bytesperline, p->fmt.sizeimage,
348 p->fmt.colorspace);
349}
350
e325b244
HV		 351static void v4l_print_buftype(const void *arg, bool write_only)
352{
353 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names));
354}
355
4b1e2e4d
HV		 356static void v4l_print_modulator(const void *arg, bool write_only)
357{
358 const struct v4l2_modulator *p = arg;
359
360 if (write_only)
560dde24 361 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans);
4b1e2e4d 362 else
27d5a87c 363 pr_cont("index=%u, name=%.*s, capability=0x%x, "
4b1e2e4d 364 "rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
27d5a87c 365 p->index, (int)sizeof(p->name), p->name, p->capability,
4b1e2e4d
HV		 366 p->rangelow, p->rangehigh, p->txsubchans);
367}
368
369static void v4l_print_tuner(const void *arg, bool write_only)
370{
371 const struct v4l2_tuner *p = arg;
372
373 if (write_only)
374 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode);
375 else
27d5a87c 376 pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, "
4b1e2e4d
HV		 377 "rangelow=%u, rangehigh=%u, signal=%u, afc=%d, "
378 "rxsubchans=0x%x, audmode=%u\n",
27d5a87c 379 p->index, (int)sizeof(p->name), p->name, p->type,
4b1e2e4d
HV		 380 p->capability, p->rangelow,
381 p->rangehigh, p->signal, p->afc,
382 p->rxsubchans, p->audmode);
383}
384
385static void v4l_print_frequency(const void *arg, bool write_only)
386{
387 const struct v4l2_frequency *p = arg;
388
389 pr_cont("tuner=%u, type=%u, frequency=%u\n",
390 p->tuner, p->type, p->frequency);
391}
392
393static void v4l_print_standard(const void *arg, bool write_only)
394{
395 const struct v4l2_standard *p = arg;
396
27d5a87c 397 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, "
4b1e2e4d 398 "framelines=%u\n", p->index,
27d5a87c 399 (unsigned long long)p->id, (int)sizeof(p->name), p->name,
4b1e2e4d
HV		 400 p->frameperiod.numerator,
401 p->frameperiod.denominator,
402 p->framelines);
403}
404
405static void v4l_print_std(const void *arg, bool write_only)
406{
407 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg);
408}
409
410static void v4l_print_hw_freq_seek(const void *arg, bool write_only)
411{
412 const struct v4l2_hw_freq_seek *p = arg;
413
5e788317
HV		 414 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, "
415 "rangelow=%u, rangehigh=%u\n",
416 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing,
417 p->rangelow, p->rangehigh);
4b1e2e4d
HV		 418}
419
eb3728ed 420static void v4l_print_requestbuffers(const void *arg, bool write_only)
59076122 421{
eb3728ed
HV		 422 const struct v4l2_requestbuffers *p = arg;
423
424 pr_cont("count=%d, type=%s, memory=%s\n",
425 p->count,
426 prt_names(p->type, v4l2_type_names),
427 prt_names(p->memory, v4l2_memory_names));
59076122
HV		 428}
429
eb3728ed 430static void v4l_print_buffer(const void *arg, bool write_only)
35ea11ff 431{
eb3728ed
HV		 432 const struct v4l2_buffer *p = arg;
433 const struct v4l2_timecode *tc = &p->timecode;
434 const struct v4l2_plane *plane;
d14e6d76 435 int i;
35ea11ff 436
eb3728ed
HV		 437 pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, "
438 "flags=0x%08x, field=%s, sequence=%d, memory=%s",
35ea11ff
HV		 439 p->timestamp.tv_sec / 3600,
440 (int)(p->timestamp.tv_sec / 60) % 60,
441 (int)(p->timestamp.tv_sec % 60),
b045979d 442 (long)p->timestamp.tv_usec,
35ea11ff
HV		 443 p->index,
444 prt_names(p->type, v4l2_type_names),
eb3728ed
HV		 445 p->flags, prt_names(p->field, v4l2_field_names),
446 p->sequence, prt_names(p->memory, v4l2_memory_names));
d14e6d76
PO		 447
448 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
eb3728ed 449 pr_cont("\n");
d14e6d76
PO		 450 for (i = 0; i < p->length; ++i) {
451 plane = &p->m.planes[i];
eb3728ed 452 printk(KERN_DEBUG
560dde24 453 "plane %d: bytesused=%d, data_offset=0x%08x, "
eb3728ed 454 "offset/userptr=0x%lx, length=%d\n",
d14e6d76
PO		 455 i, plane->bytesused, plane->data_offset,
456 plane->m.userptr, plane->length);
457 }
458 } else {
560dde24 459 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n",
d14e6d76
PO		 460 p->bytesused, p->m.userptr, p->length);
461 }
462
eb3728ed
HV		 463 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, "
464 "flags=0x%08x, frames=%d, userbits=0x%08x\n",
35ea11ff
HV		 465 tc->hours, tc->minutes, tc->seconds,
466 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
467}
468
b799d09a
TS		 469static void v4l_print_exportbuffer(const void *arg, bool write_only)
470{
471 const struct v4l2_exportbuffer *p = arg;
472
473 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n",
474 p->fd, prt_names(p->type, v4l2_type_names),
475 p->index, p->plane, p->flags);
476}
477
eb3728ed
HV		 478static void v4l_print_create_buffers(const void *arg, bool write_only)
479{
480 const struct v4l2_create_buffers *p = arg;
481
482 pr_cont("index=%d, count=%d, memory=%s, ",
483 p->index, p->count,
484 prt_names(p->memory, v4l2_memory_names));
485 v4l_print_format(&p->format, write_only);
486}
487
488static void v4l_print_streamparm(const void *arg, bool write_only)
489{
490 const struct v4l2_streamparm *p = arg;
491
492 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
493
494 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
495 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
496 const struct v4l2_captureparm *c = &p->parm.capture;
497
498 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, "
499 "extendedmode=%d, readbuffers=%d\n",
500 c->capability, c->capturemode,
501 c->timeperframe.numerator, c->timeperframe.denominator,
502 c->extendedmode, c->readbuffers);
503 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
504 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
505 const struct v4l2_outputparm *c = &p->parm.output;
506
507 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, "
508 "extendedmode=%d, writebuffers=%d\n",
509 c->capability, c->outputmode,
510 c->timeperframe.numerator, c->timeperframe.denominator,
511 c->extendedmode, c->writebuffers);
560dde24
HV		 512 } else {
513 pr_cont("\n");
eb3728ed
HV		 514 }
515}
516
efbceecd
HV		 517static void v4l_print_queryctrl(const void *arg, bool write_only)
518{
519 const struct v4l2_queryctrl *p = arg;
520
27d5a87c 521 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, "
efbceecd 522 "step=%d, default=%d, flags=0x%08x\n",
27d5a87c 523 p->id, p->type, (int)sizeof(p->name), p->name,
efbceecd
HV		 524 p->minimum, p->maximum,
525 p->step, p->default_value, p->flags);
526}
527
528static void v4l_print_querymenu(const void *arg, bool write_only)
529{
530 const struct v4l2_querymenu *p = arg;
531
532 pr_cont("id=0x%x, index=%d\n", p->id, p->index);
533}
534
535static void v4l_print_control(const void *arg, bool write_only)
536{
537 const struct v4l2_control *p = arg;
538
539 pr_cont("id=0x%x, value=%d\n", p->id, p->value);
540}
541
542static void v4l_print_ext_controls(const void *arg, bool write_only)
543{
544 const struct v4l2_ext_controls *p = arg;
545 int i;
546
547 pr_cont("class=0x%x, count=%d, error_idx=%d",
548 p->ctrl_class, p->count, p->error_idx);
549 for (i = 0; i < p->count; i++) {
550 if (p->controls[i].size)
551 pr_cont(", id/val=0x%x/0x%x",
552 p->controls[i].id, p->controls[i].value);
553 else
554 pr_cont(", id/size=0x%x/%u",
555 p->controls[i].id, p->controls[i].size);
556 }
557 pr_cont("\n");
558}
559
d84f2d94 560static void v4l_print_cropcap(const void *arg, bool write_only)
eb3728ed 561{
d84f2d94
HV		 562 const struct v4l2_cropcap *p = arg;
563
564 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, "
565 "defrect wxh=%dx%d, x,y=%d,%d\n, "
566 "pixelaspect %d/%d\n",
567 prt_names(p->type, v4l2_type_names),
568 p->bounds.width, p->bounds.height,
569 p->bounds.left, p->bounds.top,
570 p->defrect.width, p->defrect.height,
571 p->defrect.left, p->defrect.top,
572 p->pixelaspect.numerator, p->pixelaspect.denominator);
eb3728ed
HV		 573}
574
d84f2d94 575static void v4l_print_crop(const void *arg, bool write_only)
35ea11ff 576{
d84f2d94
HV		 577 const struct v4l2_crop *p = arg;
578
579 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n",
580 prt_names(p->type, v4l2_type_names),
581 p->c.width, p->c.height,
582 p->c.left, p->c.top);
583}
584
585static void v4l_print_selection(const void *arg, bool write_only)
586{
587 const struct v4l2_selection *p = arg;
588
589 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n",
590 prt_names(p->type, v4l2_type_names),
591 p->target, p->flags,
592 p->r.width, p->r.height, p->r.left, p->r.top);
593}
594
d806f2df
HV		 595static void v4l_print_jpegcompression(const void *arg, bool write_only)
596{
597 const struct v4l2_jpegcompression *p = arg;
598
599 pr_cont("quality=%d, APPn=%d, APP_len=%d, "
600 "COM_len=%d, jpeg_markers=0x%x\n",
601 p->quality, p->APPn, p->APP_len,
602 p->COM_len, p->jpeg_markers);
603}
604
605static void v4l_print_enc_idx(const void *arg, bool write_only)
606{
607 const struct v4l2_enc_idx *p = arg;
608
609 pr_cont("entries=%d, entries_cap=%d\n",
610 p->entries, p->entries_cap);
611}
612
613static void v4l_print_encoder_cmd(const void *arg, bool write_only)
614{
615 const struct v4l2_encoder_cmd *p = arg;
616
617 pr_cont("cmd=%d, flags=0x%x\n",
618 p->cmd, p->flags);
619}
620
621static void v4l_print_decoder_cmd(const void *arg, bool write_only)
622{
623 const struct v4l2_decoder_cmd *p = arg;
624
625 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags);
626
627 if (p->cmd == V4L2_DEC_CMD_START)
628 pr_info("speed=%d, format=%u\n",
629 p->start.speed, p->start.format);
630 else if (p->cmd == V4L2_DEC_CMD_STOP)
631 pr_info("pts=%llu\n", p->stop.pts);
632}
633
96b03d2a 634static void v4l_print_dbg_chip_info(const void *arg, bool write_only)
79b0c640 635{
96b03d2a 636 const struct v4l2_dbg_chip_info *p = arg;
79b0c640
HV		 637
638 pr_cont("type=%u, ", p->match.type);
3eef2510 639 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
79b0c640
HV		 640 pr_cont("name=%.*s, ",
641 (int)sizeof(p->match.name), p->match.name);
642 else
643 pr_cont("addr=%u, ", p->match.addr);
644 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name);
645}
646
f16f77b0
HV		 647static void v4l_print_dbg_register(const void *arg, bool write_only)
648{
649 const struct v4l2_dbg_register *p = arg;
650
651 pr_cont("type=%u, ", p->match.type);
3eef2510 652 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
27d5a87c
HV		 653 pr_cont("name=%.*s, ",
654 (int)sizeof(p->match.name), p->match.name);
f16f77b0
HV		 655 else
656 pr_cont("addr=%u, ", p->match.addr);
657 pr_cont("reg=0x%llx, val=0x%llx\n",
658 p->reg, p->val);
659}
660
efc626b0 661static void v4l_print_dv_timings(const void *arg, bool write_only)
5d7758ee 662{
efc626b0
HV		 663 const struct v4l2_dv_timings *p = arg;
664
5d7758ee
HV		 665 switch (p->type) {
666 case V4L2_DV_BT_656_1120:
efc626b0
HV		 667 pr_cont("type=bt-656/1120, interlaced=%u, "
668 "pixelclock=%llu, "
669 "width=%u, height=%u, polarities=0x%x, "
670 "hfrontporch=%u, hsync=%u, "
671 "hbackporch=%u, vfrontporch=%u, "
672 "vsync=%u, vbackporch=%u, "
673 "il_vfrontporch=%u, il_vsync=%u, "
674 "il_vbackporch=%u, standards=0x%x, flags=0x%x\n",
5d7758ee
HV		 675 p->bt.interlaced, p->bt.pixelclock,
676 p->bt.width, p->bt.height,
677 p->bt.polarities, p->bt.hfrontporch,
678 p->bt.hsync, p->bt.hbackporch,
679 p->bt.vfrontporch, p->bt.vsync,
680 p->bt.vbackporch, p->bt.il_vfrontporch,
681 p->bt.il_vsync, p->bt.il_vbackporch,
682 p->bt.standards, p->bt.flags);
683 break;
684 default:
efc626b0 685 pr_cont("type=%d\n", p->type);
5d7758ee
HV		 686 break;
687 }
688}
689
efc626b0
HV		 690static void v4l_print_enum_dv_timings(const void *arg, bool write_only)
691{
692 const struct v4l2_enum_dv_timings *p = arg;
693
694 pr_cont("index=%u, ", p->index);
695 v4l_print_dv_timings(&p->timings, write_only);
696}
697
698static void v4l_print_dv_timings_cap(const void *arg, bool write_only)
699{
700 const struct v4l2_dv_timings_cap *p = arg;
701
702 switch (p->type) {
703 case V4L2_DV_BT_656_1120:
704 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, "
705 "pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
706 p->bt.min_width, p->bt.max_width,
707 p->bt.min_height, p->bt.max_height,
708 p->bt.min_pixelclock, p->bt.max_pixelclock,
709 p->bt.standards, p->bt.capabilities);
710 break;
711 default:
712 pr_cont("type=%u\n", p->type);
713 break;
714 }
715}
716
458aa4a6
HV		 717static void v4l_print_frmsizeenum(const void *arg, bool write_only)
718{
719 const struct v4l2_frmsizeenum *p = arg;
720
721 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u",
722 p->index,
723 (p->pixel_format & 0xff),
724 (p->pixel_format >> 8) & 0xff,
725 (p->pixel_format >> 16) & 0xff,
726 (p->pixel_format >> 24) & 0xff,
727 p->type);
728 switch (p->type) {
729 case V4L2_FRMSIZE_TYPE_DISCRETE:
560dde24 730 pr_cont(", wxh=%ux%u\n",
458aa4a6
HV		 731 p->discrete.width, p->discrete.height);
732 break;
733 case V4L2_FRMSIZE_TYPE_STEPWISE:
560dde24 734 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n",
458aa4a6
HV		 735 p->stepwise.min_width, p->stepwise.min_height,
736 p->stepwise.step_width, p->stepwise.step_height,
737 p->stepwise.max_width, p->stepwise.max_height);
738 break;
739 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
740 /* fall through */
741 default:
742 pr_cont("\n");
743 break;
744 }
745}
746
747static void v4l_print_frmivalenum(const void *arg, bool write_only)
748{
749 const struct v4l2_frmivalenum *p = arg;
750
751 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u",
752 p->index,
753 (p->pixel_format & 0xff),
754 (p->pixel_format >> 8) & 0xff,
755 (p->pixel_format >> 16) & 0xff,
756 (p->pixel_format >> 24) & 0xff,
757 p->width, p->height, p->type);
758 switch (p->type) {
759 case V4L2_FRMIVAL_TYPE_DISCRETE:
560dde24 760 pr_cont(", fps=%d/%d\n",
458aa4a6
HV		 761 p->discrete.numerator,
762 p->discrete.denominator);
763 break;
764 case V4L2_FRMIVAL_TYPE_STEPWISE:
560dde24 765 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n",
458aa4a6
HV		 766 p->stepwise.min.numerator,
767 p->stepwise.min.denominator,
768 p->stepwise.max.numerator,
769 p->stepwise.max.denominator,
770 p->stepwise.step.numerator,
771 p->stepwise.step.denominator);
772 break;
773 case V4L2_FRMIVAL_TYPE_CONTINUOUS:
774 /* fall through */
775 default:
776 pr_cont("\n");
777 break;
778 }
779}
780
781static void v4l_print_event(const void *arg, bool write_only)
782{
783 const struct v4l2_event *p = arg;
784 const struct v4l2_event_ctrl *c;
785
786 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, "
787 "timestamp=%lu.%9.9lu\n",
788 p->type, p->pending, p->sequence, p->id,
789 p->timestamp.tv_sec, p->timestamp.tv_nsec);
790 switch (p->type) {
791 case V4L2_EVENT_VSYNC:
792 printk(KERN_DEBUG "field=%s\n",
793 prt_names(p->u.vsync.field, v4l2_field_names));
794 break;
795 case V4L2_EVENT_CTRL:
796 c = &p->u.ctrl;
797 printk(KERN_DEBUG "changes=0x%x, type=%u, ",
798 c->changes, c->type);
799 if (c->type == V4L2_CTRL_TYPE_INTEGER64)
800 pr_cont("value64=%lld, ", c->value64);
801 else
802 pr_cont("value=%d, ", c->value);
560dde24
HV		 803 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, "
804 "default_value=%d\n",
458aa4a6
HV		 805 c->flags, c->minimum, c->maximum,
806 c->step, c->default_value);
807 break;
808 case V4L2_EVENT_FRAME_SYNC:
809 pr_cont("frame_sequence=%u\n",
810 p->u.frame_sync.frame_sequence);
811 break;
812 }
813}
814
815static void v4l_print_event_subscription(const void *arg, bool write_only)
816{
817 const struct v4l2_event_subscription *p = arg;
818
819 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
820 p->type, p->id, p->flags);
821}
822
823static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only)
824{
825 const struct v4l2_sliced_vbi_cap *p = arg;
826 int i;
827
828 pr_cont("type=%s, service_set=0x%08x\n",
829 prt_names(p->type, v4l2_type_names), p->service_set);
830 for (i = 0; i < 24; i++)
831 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
832 p->service_lines[0][i],
833 p->service_lines[1][i]);
834}
835
82b655bf
HV		 836static void v4l_print_freq_band(const void *arg, bool write_only)
837{
838 const struct v4l2_frequency_band *p = arg;
839
840 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, "
560dde24 841 "rangelow=%u, rangehigh=%u, modulation=0x%x\n",
82b655bf
HV		 842 p->tuner, p->type, p->index,
843 p->capability, p->rangelow,
844 p->rangehigh, p->modulation);
845}
846
efc626b0
HV		 847static void v4l_print_u32(const void *arg, bool write_only)
848{
849 pr_cont("value=%u\n", *(const u32 *)arg);
850}
851
852static void v4l_print_newline(const void *arg, bool write_only)
853{
854 pr_cont("\n");
855}
856
f18d8e07
HV		 857static void v4l_print_default(const void *arg, bool write_only)
858{
859 pr_cont("driver-specific ioctl\n");
860}
861
efbceecd 862static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
35ea11ff
HV		 863{
864 __u32 i;
865
866 /* zero the reserved fields */
867 c->reserved[0] = c->reserved[1] = 0;
6b5a9492 868 for (i = 0; i < c->count; i++)
35ea11ff 869 c->controls[i].reserved2[0] = 0;
6b5a9492 870
35ea11ff
HV		 871 /* V4L2_CID_PRIVATE_BASE cannot be used as control class
872 when using extended controls.
873 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
874 is it allowed for backwards compatibility.
875 */
876 if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE)
877 return 0;
878 /* Check that all controls are from the same control class. */
879 for (i = 0; i < c->count; i++) {
880 if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) {
881 c->error_idx = i;
882 return 0;
883 }
884 }
885 return 1;
886}
887
4b20259f 888static int check_fmt(struct file *file, enum v4l2_buf_type type)
35ea11ff 889{
4b20259f
HV		 890 struct video_device *vfd = video_devdata(file);
891 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
892 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
893 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI;
582c52cb 894 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
4b20259f
HV		 895 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
896 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
897
a399810c
HV		 898 if (ops == NULL)
899 return -EINVAL;
900
35ea11ff
HV		 901 switch (type) {
902 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f
HV		 903 if (is_vid && is_rx &&
904 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane))
d14e6d76
PO		 905 return 0;
906 break;
907 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 908 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_cap_mplane)
35ea11ff
HV		 909 return 0;
910 break;
911 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 912 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay)
35ea11ff
HV		 913 return 0;
914 break;
915 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f
HV		 916 if (is_vid && is_tx &&
917 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane))
d14e6d76
PO		 918 return 0;
919 break;
920 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 921 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane)
35ea11ff
HV		 922 return 0;
923 break;
924 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 925 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay)
35ea11ff
HV		 926 return 0;
927 break;
928 case V4L2_BUF_TYPE_VBI_CAPTURE:
4b20259f 929 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap)
35ea11ff
HV		 930 return 0;
931 break;
932 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 933 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out)
35ea11ff
HV		 934 return 0;
935 break;
936 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
4b20259f 937 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap)
35ea11ff
HV		 938 return 0;
939 break;
940 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 941 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out)
35ea11ff
HV		 942 return 0;
943 break;
582c52cb
AP		 944 case V4L2_BUF_TYPE_SDR_CAPTURE:
945 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap)
946 return 0;
947 break;
633c98e5 948 default:
35ea11ff
HV		 949 break;
950 }
951 return -EINVAL;
952}
953
59076122
HV		 954static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
955 struct file *file, void *fh, void *arg)
956{
957 struct v4l2_capability *cap = (struct v4l2_capability *)arg;
958
959 cap->version = LINUX_VERSION_CODE;
960 return ops->vidioc_querycap(file, fh, cap);
961}
962
963static int v4l_s_input(const struct v4l2_ioctl_ops *ops,
964 struct file *file, void *fh, void *arg)
965{
966 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg);
967}
968
969static int v4l_s_output(const struct v4l2_ioctl_ops *ops,
970 struct file *file, void *fh, void *arg)
971{
972 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg);
973}
974
d0547cba
HV		 975static int v4l_g_priority(const struct v4l2_ioctl_ops *ops,
976 struct file *file, void *fh, void *arg)
977{
978 struct video_device *vfd;
979 u32 *p = arg;
980
981 if (ops->vidioc_g_priority)
982 return ops->vidioc_g_priority(file, fh, arg);
983 vfd = video_devdata(file);
984 *p = v4l2_prio_max(&vfd->v4l2_dev->prio);
985 return 0;
986}
987
988static int v4l_s_priority(const struct v4l2_ioctl_ops *ops,
989 struct file *file, void *fh, void *arg)
990{
991 struct video_device *vfd;
992 struct v4l2_fh *vfh;
993 u32 *p = arg;
994
995 if (ops->vidioc_s_priority)
996 return ops->vidioc_s_priority(file, fh, *p);
997 vfd = video_devdata(file);
998 vfh = file->private_data;
999 return v4l2_prio_change(&vfd->v4l2_dev->prio, &vfh->prio, *p);
1000}
1001
59076122
HV		 1002static int v4l_enuminput(const struct v4l2_ioctl_ops *ops,
1003 struct file *file, void *fh, void *arg)
1004{
73f35418 1005 struct video_device *vfd = video_devdata(file);
59076122
HV		 1006 struct v4l2_input *p = arg;
1007
1008 /*
02fa6282 1009 * We set the flags for CAP_DV_TIMINGS &
59076122
HV		 1010 * CAP_STD here based on ioctl handler provided by the
1011 * driver. If the driver doesn't support these
1012 * for a specific input, it must override these flags.
1013 */
73f35418 1014 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
59076122 1015 p->capabilities |= V4L2_IN_CAP_STD;
59076122
HV		 1016
1017 return ops->vidioc_enum_input(file, fh, p);
1018}
1019
1020static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops,
1021 struct file *file, void *fh, void *arg)
1022{
73f35418 1023 struct video_device *vfd = video_devdata(file);
59076122
HV		 1024 struct v4l2_output *p = arg;
1025
1026 /*
02fa6282 1027 * We set the flags for CAP_DV_TIMINGS &
59076122
HV		 1028 * CAP_STD here based on ioctl handler provided by the
1029 * driver. If the driver doesn't support these
1030 * for a specific output, it must override these flags.
1031 */
73f35418 1032 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
59076122 1033 p->capabilities |= V4L2_OUT_CAP_STD;
59076122
HV		 1034
1035 return ops->vidioc_enum_output(file, fh, p);
1036}
1037
be6c64e4
HV		 1038static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
1039 struct file *file, void *fh, void *arg)
1040{
1041 struct v4l2_fmtdesc *p = arg;
4b20259f
HV		 1042 struct video_device *vfd = video_devdata(file);
1043 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1044 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
be6c64e4
HV		 1045
1046 switch (p->type) {
1047 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1048 if (unlikely(!is_rx || !ops->vidioc_enum_fmt_vid_cap))
be6c64e4
HV		 1049 break;
1050 return ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
1051 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1052 if (unlikely(!is_rx || !ops->vidioc_enum_fmt_vid_cap_mplane))
be6c64e4
HV		 1053 break;
1054 return ops->vidioc_enum_fmt_vid_cap_mplane(file, fh, arg);
1055 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1056 if (unlikely(!is_rx || !ops->vidioc_enum_fmt_vid_overlay))
be6c64e4
HV		 1057 break;
1058 return ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
1059 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1060 if (unlikely(!is_tx || !ops->vidioc_enum_fmt_vid_out))
be6c64e4
HV		 1061 break;
1062 return ops->vidioc_enum_fmt_vid_out(file, fh, arg);
1063 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1064 if (unlikely(!is_tx || !ops->vidioc_enum_fmt_vid_out_mplane))
be6c64e4
HV		 1065 break;
1066 return ops->vidioc_enum_fmt_vid_out_mplane(file, fh, arg);
582c52cb
AP		 1067 case V4L2_BUF_TYPE_SDR_CAPTURE:
1068 if (unlikely(!is_rx || !ops->vidioc_enum_fmt_sdr_cap))
1069 break;
1070 return ops->vidioc_enum_fmt_sdr_cap(file, fh, arg);
be6c64e4
HV		 1071 }
1072 return -EINVAL;
1073}
1074
1075static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
1076 struct file *file, void *fh, void *arg)
1077{
1078 struct v4l2_format *p = arg;
4b20259f
HV		 1079 struct video_device *vfd = video_devdata(file);
1080 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
582c52cb 1081 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
4b20259f
HV		 1082 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1083 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
be6c64e4
HV		 1084
1085 switch (p->type) {
1086 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1087 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap))
be6c64e4
HV		 1088 break;
1089 return ops->vidioc_g_fmt_vid_cap(file, fh, arg);
1090 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1091 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap_mplane))
be6c64e4
HV		 1092 break;
1093 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
1094 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1095 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_overlay))
be6c64e4
HV		 1096 break;
1097 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
4b20259f
HV		 1098 case V4L2_BUF_TYPE_VBI_CAPTURE:
1099 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_vbi_cap))
1100 break;
1101 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
1102 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1103 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_cap))
1104 break;
1105 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1106 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1107 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out))
be6c64e4
HV		 1108 break;
1109 return ops->vidioc_g_fmt_vid_out(file, fh, arg);
1110 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1111 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_mplane))
be6c64e4
HV		 1112 break;
1113 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
1114 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 1115 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_overlay))
be6c64e4
HV		 1116 break;
1117 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1118 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 1119 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_vbi_out))
be6c64e4
HV		 1120 break;
1121 return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
be6c64e4 1122 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 1123 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_out))
be6c64e4
HV		 1124 break;
1125 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
582c52cb
AP		 1126 case V4L2_BUF_TYPE_SDR_CAPTURE:
1127 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_g_fmt_sdr_cap))
1128 break;
1129 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg);
be6c64e4
HV		 1130 }
1131 return -EINVAL;
1132}
1133
1134static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
1135 struct file *file, void *fh, void *arg)
1136{
1137 struct v4l2_format *p = arg;
4b20259f
HV		 1138 struct video_device *vfd = video_devdata(file);
1139 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
582c52cb 1140 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
4b20259f
HV		 1141 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1142 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
be6c64e4
HV		 1143
1144 switch (p->type) {
1145 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1146 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap))
be6c64e4
HV		 1147 break;
1148 CLEAR_AFTER_FIELD(p, fmt.pix);
1149 return ops->vidioc_s_fmt_vid_cap(file, fh, arg);
1150 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1151 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap_mplane))
be6c64e4
HV		 1152 break;
1153 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1154 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
1155 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1156 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_overlay))
be6c64e4
HV		 1157 break;
1158 CLEAR_AFTER_FIELD(p, fmt.win);
1159 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
4b20259f
HV		 1160 case V4L2_BUF_TYPE_VBI_CAPTURE:
1161 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_vbi_cap))
1162 break;
1163 CLEAR_AFTER_FIELD(p, fmt.vbi);
1164 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
1165 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1166 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_cap))
1167 break;
1168 CLEAR_AFTER_FIELD(p, fmt.sliced);
1169 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1170 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1171 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out))
be6c64e4
HV		 1172 break;
1173 CLEAR_AFTER_FIELD(p, fmt.pix);
1174 return ops->vidioc_s_fmt_vid_out(file, fh, arg);
1175 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1176 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_mplane))
be6c64e4
HV		 1177 break;
1178 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1179 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
1180 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 1181 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_overlay))
be6c64e4
HV		 1182 break;
1183 CLEAR_AFTER_FIELD(p, fmt.win);
1184 return ops->vidioc_s_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_s_fmt_vbi_out))
be6c64e4
HV		 1187 break;
1188 CLEAR_AFTER_FIELD(p, fmt.vbi);
1189 return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
be6c64e4 1190 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 1191 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_out))
be6c64e4
HV		 1192 break;
1193 CLEAR_AFTER_FIELD(p, fmt.sliced);
1194 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
582c52cb
AP		 1195 case V4L2_BUF_TYPE_SDR_CAPTURE:
1196 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_s_fmt_sdr_cap))
1197 break;
1198 CLEAR_AFTER_FIELD(p, fmt.sdr);
1199 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg);
be6c64e4
HV		 1200 }
1201 return -EINVAL;
1202}
1203
1204static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
1205 struct file *file, void *fh, void *arg)
1206{
1207 struct v4l2_format *p = arg;
4b20259f
HV		 1208 struct video_device *vfd = video_devdata(file);
1209 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
582c52cb 1210 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
4b20259f
HV		 1211 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1212 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
be6c64e4
HV		 1213
1214 switch (p->type) {
1215 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1216 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap))
be6c64e4
HV		 1217 break;
1218 CLEAR_AFTER_FIELD(p, fmt.pix);
1219 return ops->vidioc_try_fmt_vid_cap(file, fh, arg);
1220 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1221 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap_mplane))
be6c64e4
HV		 1222 break;
1223 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1224 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
1225 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1226 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_overlay))
be6c64e4
HV		 1227 break;
1228 CLEAR_AFTER_FIELD(p, fmt.win);
1229 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
4b20259f
HV		 1230 case V4L2_BUF_TYPE_VBI_CAPTURE:
1231 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_vbi_cap))
1232 break;
1233 CLEAR_AFTER_FIELD(p, fmt.vbi);
1234 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
1235 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1236 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_cap))
1237 break;
1238 CLEAR_AFTER_FIELD(p, fmt.sliced);
1239 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1240 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1241 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out))
be6c64e4
HV		 1242 break;
1243 CLEAR_AFTER_FIELD(p, fmt.pix);
1244 return ops->vidioc_try_fmt_vid_out(file, fh, arg);
1245 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1246 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_mplane))
be6c64e4
HV		 1247 break;
1248 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1249 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
1250 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 1251 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_overlay))
be6c64e4
HV		 1252 break;
1253 CLEAR_AFTER_FIELD(p, fmt.win);
1254 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1255 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 1256 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_vbi_out))
be6c64e4
HV		 1257 break;
1258 CLEAR_AFTER_FIELD(p, fmt.vbi);
1259 return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
be6c64e4 1260 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 1261 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_out))
be6c64e4
HV		 1262 break;
1263 CLEAR_AFTER_FIELD(p, fmt.sliced);
1264 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
582c52cb
AP		 1265 case V4L2_BUF_TYPE_SDR_CAPTURE:
1266 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_try_fmt_sdr_cap))
1267 break;
1268 CLEAR_AFTER_FIELD(p, fmt.sdr);
1269 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg);
be6c64e4
HV		 1270 }
1271 return -EINVAL;
1272}
1273
e325b244
HV		 1274static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
1275 struct file *file, void *fh, void *arg)
1276{
1277 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
1278}
1279
1280static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
1281 struct file *file, void *fh, void *arg)
1282{
1283 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
1284}
1285
4b1e2e4d
HV		 1286static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,
1287 struct file *file, void *fh, void *arg)
1288{
1289 struct video_device *vfd = video_devdata(file);
1290 struct v4l2_tuner *p = arg;
82b655bf 1291 int err;
4b1e2e4d
HV		 1292
1293 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1294 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
82b655bf
HV		 1295 err = ops->vidioc_g_tuner(file, fh, p);
1296 if (!err)
1297 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1298 return err;
4b1e2e4d
HV		 1299}
1300
1301static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
1302 struct file *file, void *fh, void *arg)
1303{
1304 struct video_device *vfd = video_devdata(file);
1305 struct v4l2_tuner *p = arg;
1306
1307 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1308 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1309 return ops->vidioc_s_tuner(file, fh, p);
1310}
1311
82b655bf
HV		 1312static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,
1313 struct file *file, void *fh, void *arg)
1314{
1315 struct v4l2_modulator *p = arg;
1316 int err;
1317
1318 err = ops->vidioc_g_modulator(file, fh, p);
1319 if (!err)
1320 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1321 return err;
1322}
1323
4b1e2e4d
HV		 1324static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
1325 struct file *file, void *fh, void *arg)
1326{
1327 struct video_device *vfd = video_devdata(file);
1328 struct v4l2_frequency *p = arg;
1329
84099a28
AP		 1330 if (vfd->vfl_type == VFL_TYPE_SDR)
1331 p->type = V4L2_TUNER_ADC;
1332 else
1333 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1334 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
4b1e2e4d
HV		 1335 return ops->vidioc_g_frequency(file, fh, p);
1336}
1337
1338static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
1339 struct file *file, void *fh, void *arg)
1340{
1341 struct video_device *vfd = video_devdata(file);
b530a447 1342 const struct v4l2_frequency *p = arg;
4b1e2e4d
HV		 1343 enum v4l2_tuner_type type;
1344
84099a28
AP		 1345 if (vfd->vfl_type == VFL_TYPE_SDR) {
1346 if (p->type != V4L2_TUNER_ADC && p->type != V4L2_TUNER_RF)
1347 return -EINVAL;
1348 } else {
1349 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1350 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1351 if (type != p->type)
1352 return -EINVAL;
1353 }
4b1e2e4d
HV		 1354 return ops->vidioc_s_frequency(file, fh, p);
1355}
1356
1357static int v4l_enumstd(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_standard *p = arg;
1362 v4l2_std_id id = vfd->tvnorms, curr_id = 0;
1363 unsigned int index = p->index, i, j = 0;
1364 const char *descr = "";
1365
a5338190
HV		 1366 /* Return -ENODATA if the tvnorms for the current input
1367 or output is 0, meaning that it doesn't support this API. */
1368 if (id == 0)
1369 return -ENODATA;
1370
4b1e2e4d
HV		 1371 /* Return norm array in a canonical way */
1372 for (i = 0; i <= index && id; i++) {
1373 /* last std value in the standards array is 0, so this
1374 while always ends there since (id & 0) == 0. */
1375 while ((id & standards[j].std) != standards[j].std)
1376 j++;
1377 curr_id = standards[j].std;
1378 descr = standards[j].descr;
1379 j++;
1380 if (curr_id == 0)
1381 break;
1382 if (curr_id != V4L2_STD_PAL &&
1383 curr_id != V4L2_STD_SECAM &&
1384 curr_id != V4L2_STD_NTSC)
1385 id &= ~curr_id;
1386 }
1387 if (i <= index)
1388 return -EINVAL;
1389
1390 v4l2_video_std_construct(p, curr_id, descr);
1391 return 0;
1392}
1393
4b1e2e4d
HV		 1394static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
1395 struct file *file, void *fh, void *arg)
1396{
1397 struct video_device *vfd = video_devdata(file);
314527ac 1398 v4l2_std_id id = *(v4l2_std_id *)arg, norm;
4b1e2e4d 1399
314527ac 1400 norm = id & vfd->tvnorms;
4b1e2e4d
HV		 1401 if (vfd->tvnorms && !norm) /* Check if std is supported */
1402 return -EINVAL;
1403
1404 /* Calls the specific handler */
ca371575 1405 return ops->vidioc_s_std(file, fh, norm);
4b1e2e4d
HV		 1406}
1407
1408static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
1409 struct file *file, void *fh, void *arg)
1410{
1411 struct video_device *vfd = video_devdata(file);
1412 v4l2_std_id *p = arg;
1413
1414 /*
1a2c6866
HV		 1415 * If no signal is detected, then the driver should return
1416 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with
1417 * any standards that do not apply removed.
1418 *
4b1e2e4d
HV		 1419 * This means that tuners, audio and video decoders can join
1420 * their efforts to improve the standards detection.
1421 */
1422 *p = vfd->tvnorms;
1423 return ops->vidioc_querystd(file, fh, arg);
1424}
1425
1426static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
1427 struct file *file, void *fh, void *arg)
1428{
1429 struct video_device *vfd = video_devdata(file);
1430 struct v4l2_hw_freq_seek *p = arg;
1431 enum v4l2_tuner_type type;
1432
84099a28
AP		 1433 /* s_hw_freq_seek is not supported for SDR for now */
1434 if (vfd->vfl_type == VFL_TYPE_SDR)
1435 return -EINVAL;
1436
4b1e2e4d
HV		 1437 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1438 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1439 if (p->type != type)
1440 return -EINVAL;
1441 return ops->vidioc_s_hw_freq_seek(file, fh, p);
1442}
1443
737c097b
HV		 1444static int v4l_overlay(const struct v4l2_ioctl_ops *ops,
1445 struct file *file, void *fh, void *arg)
1446{
1447 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg);
1448}
1449
eb3728ed
HV		 1450static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,
1451 struct file *file, void *fh, void *arg)
1452{
1453 struct v4l2_requestbuffers *p = arg;
4b20259f 1454 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1455
1456 if (ret)
1457 return ret;
1458
633c98e5 1459 CLEAR_AFTER_FIELD(p, memory);
eb3728ed
HV		 1460
1461 return ops->vidioc_reqbufs(file, fh, p);
1462}
1463
1464static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,
1465 struct file *file, void *fh, void *arg)
1466{
1467 struct v4l2_buffer *p = arg;
4b20259f 1468 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1469
1470 return ret ? ret : ops->vidioc_querybuf(file, fh, p);
1471}
1472
1473static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,
1474 struct file *file, void *fh, void *arg)
1475{
1476 struct v4l2_buffer *p = arg;
4b20259f 1477 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1478
1479 return ret ? ret : ops->vidioc_qbuf(file, fh, p);
1480}
1481
1482static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,
1483 struct file *file, void *fh, void *arg)
1484{
1485 struct v4l2_buffer *p = arg;
4b20259f 1486 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1487
1488 return ret ? ret : ops->vidioc_dqbuf(file, fh, p);
1489}
1490
1491static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
1492 struct file *file, void *fh, void *arg)
1493{
1494 struct v4l2_create_buffers *create = arg;
4b20259f 1495 int ret = check_fmt(file, create->format.type);
eb3728ed
HV		 1496
1497 return ret ? ret : ops->vidioc_create_bufs(file, fh, create);
1498}
1499
1500static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
1501 struct file *file, void *fh, void *arg)
1502{
1503 struct v4l2_buffer *b = arg;
4b20259f 1504 int ret = check_fmt(file, b->type);
eb3728ed
HV		 1505
1506 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
1507}
1508
1509static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
1510 struct file *file, void *fh, void *arg)
1511{
eb3728ed
HV		 1512 struct v4l2_streamparm *p = arg;
1513 v4l2_std_id std;
4b20259f 1514 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1515
1516 if (ret)
1517 return ret;
1518 if (ops->vidioc_g_parm)
1519 return ops->vidioc_g_parm(file, fh, p);
eb3728ed
HV		 1520 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1521 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1522 return -EINVAL;
1523 p->parm.capture.readbuffers = 2;
ca371575 1524 ret = ops->vidioc_g_std(file, fh, &std);
eb3728ed 1525 if (ret == 0)
ca371575 1526 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe);
eb3728ed
HV		 1527 return ret;
1528}
1529
1530static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
1531 struct file *file, void *fh, void *arg)
1532{
1533 struct v4l2_streamparm *p = arg;
4b20259f 1534 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1535
1536 return ret ? ret : ops->vidioc_s_parm(file, fh, p);
1537}
1538
efbceecd
HV		 1539static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,
1540 struct file *file, void *fh, void *arg)
1541{
1542 struct video_device *vfd = video_devdata(file);
1543 struct v4l2_queryctrl *p = arg;
7a3ed2d9
HV		 1544 struct v4l2_fh *vfh =
1545 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1546
1547 if (vfh && vfh->ctrl_handler)
1548 return v4l2_queryctrl(vfh->ctrl_handler, p);
1549 if (vfd->ctrl_handler)
1550 return v4l2_queryctrl(vfd->ctrl_handler, p);
1551 if (ops->vidioc_queryctrl)
1552 return ops->vidioc_queryctrl(file, fh, p);
1553 return -ENOTTY;
1554}
1555
1556static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,
1557 struct file *file, void *fh, void *arg)
1558{
1559 struct video_device *vfd = video_devdata(file);
1560 struct v4l2_querymenu *p = arg;
7a3ed2d9
HV		 1561 struct v4l2_fh *vfh =
1562 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1563
1564 if (vfh && vfh->ctrl_handler)
1565 return v4l2_querymenu(vfh->ctrl_handler, p);
1566 if (vfd->ctrl_handler)
1567 return v4l2_querymenu(vfd->ctrl_handler, p);
1568 if (ops->vidioc_querymenu)
1569 return ops->vidioc_querymenu(file, fh, p);
1570 return -ENOTTY;
1571}
1572
1573static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops,
1574 struct file *file, void *fh, void *arg)
1575{
1576 struct video_device *vfd = video_devdata(file);
1577 struct v4l2_control *p = arg;
7a3ed2d9
HV		 1578 struct v4l2_fh *vfh =
1579 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1580 struct v4l2_ext_controls ctrls;
1581 struct v4l2_ext_control ctrl;
1582
1583 if (vfh && vfh->ctrl_handler)
1584 return v4l2_g_ctrl(vfh->ctrl_handler, p);
1585 if (vfd->ctrl_handler)
1586 return v4l2_g_ctrl(vfd->ctrl_handler, p);
1587 if (ops->vidioc_g_ctrl)
1588 return ops->vidioc_g_ctrl(file, fh, p);
1589 if (ops->vidioc_g_ext_ctrls == NULL)
1590 return -ENOTTY;
1591
1592 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1593 ctrls.count = 1;
1594 ctrls.controls = &ctrl;
1595 ctrl.id = p->id;
1596 ctrl.value = p->value;
1597 if (check_ext_ctrls(&ctrls, 1)) {
1598 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
1599
1600 if (ret == 0)
1601 p->value = ctrl.value;
1602 return ret;
1603 }
1604 return -EINVAL;
1605}
1606
1607static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,
1608 struct file *file, void *fh, void *arg)
1609{
1610 struct video_device *vfd = video_devdata(file);
1611 struct v4l2_control *p = arg;
7a3ed2d9
HV		 1612 struct v4l2_fh *vfh =
1613 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1614 struct v4l2_ext_controls ctrls;
1615 struct v4l2_ext_control ctrl;
1616
1617 if (vfh && vfh->ctrl_handler)
1618 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
1619 if (vfd->ctrl_handler)
1620 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
1621 if (ops->vidioc_s_ctrl)
1622 return ops->vidioc_s_ctrl(file, fh, p);
1623 if (ops->vidioc_s_ext_ctrls == NULL)
1624 return -ENOTTY;
1625
1626 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1627 ctrls.count = 1;
1628 ctrls.controls = &ctrl;
1629 ctrl.id = p->id;
1630 ctrl.value = p->value;
1631 if (check_ext_ctrls(&ctrls, 1))
1632 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
1633 return -EINVAL;
1634}
1635
1636static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1637 struct file *file, void *fh, void *arg)
1638{
1639 struct video_device *vfd = video_devdata(file);
1640 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 1641 struct v4l2_fh *vfh =
1642 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1643
1644 p->error_idx = p->count;
1645 if (vfh && vfh->ctrl_handler)
1646 return v4l2_g_ext_ctrls(vfh->ctrl_handler, p);
1647 if (vfd->ctrl_handler)
1648 return v4l2_g_ext_ctrls(vfd->ctrl_handler, p);
1649 if (ops->vidioc_g_ext_ctrls == NULL)
1650 return -ENOTTY;
1651 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :
1652 -EINVAL;
1653}
1654
1655static int v4l_s_ext_ctrls(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_ext_controls *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 p->error_idx = p->count;
1664 if (vfh && vfh->ctrl_handler)
1665 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, p);
1666 if (vfd->ctrl_handler)
1667 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, p);
1668 if (ops->vidioc_s_ext_ctrls == NULL)
1669 return -ENOTTY;
1670 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :
1671 -EINVAL;
1672}
1673
1674static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1675 struct file *file, void *fh, void *arg)
1676{
1677 struct video_device *vfd = video_devdata(file);
1678 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 1679 struct v4l2_fh *vfh =
1680 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1681
1682 p->error_idx = p->count;
1683 if (vfh && vfh->ctrl_handler)
1684 return v4l2_try_ext_ctrls(vfh->ctrl_handler, p);
1685 if (vfd->ctrl_handler)
1686 return v4l2_try_ext_ctrls(vfd->ctrl_handler, p);
1687 if (ops->vidioc_try_ext_ctrls == NULL)
1688 return -ENOTTY;
1689 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :
1690 -EINVAL;
1691}
1692
d84f2d94
HV		 1693static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
1694 struct file *file, void *fh, void *arg)
1695{
1696 struct v4l2_crop *p = arg;
1697 struct v4l2_selection s = {
1698 .type = p->type,
1699 };
1700 int ret;
1701
1702 if (ops->vidioc_g_crop)
1703 return ops->vidioc_g_crop(file, fh, p);
1704 /* simulate capture crop using selection api */
1705
1706 /* crop means compose for output devices */
1707 if (V4L2_TYPE_IS_OUTPUT(p->type))
1708 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
1709 else
1710 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
1711
1712 ret = ops->vidioc_g_selection(file, fh, &s);
1713
1714 /* copying results to old structure on success */
1715 if (!ret)
1716 p->c = s.r;
1717 return ret;
1718}
1719
1720static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
1721 struct file *file, void *fh, void *arg)
1722{
1723 struct v4l2_crop *p = arg;
1724 struct v4l2_selection s = {
1725 .type = p->type,
1726 .r = p->c,
1727 };
1728
1729 if (ops->vidioc_s_crop)
1730 return ops->vidioc_s_crop(file, fh, p);
1731 /* simulate capture crop using selection api */
1732
1733 /* crop means compose for output devices */
1734 if (V4L2_TYPE_IS_OUTPUT(p->type))
1735 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
1736 else
1737 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
1738
1739 return ops->vidioc_s_selection(file, fh, &s);
1740}
1741
1742static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
1743 struct file *file, void *fh, void *arg)
1744{
1745 struct v4l2_cropcap *p = arg;
1746 struct v4l2_selection s = { .type = p->type };
1747 int ret;
1748
1749 if (ops->vidioc_cropcap)
1750 return ops->vidioc_cropcap(file, fh, p);
1751
1752 /* obtaining bounds */
1753 if (V4L2_TYPE_IS_OUTPUT(p->type))
1754 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
1755 else
1756 s.target = V4L2_SEL_TGT_CROP_BOUNDS;
1757
1758 ret = ops->vidioc_g_selection(file, fh, &s);
1759 if (ret)
1760 return ret;
1761 p->bounds = s.r;
1762
1763 /* obtaining defrect */
1764 if (V4L2_TYPE_IS_OUTPUT(p->type))
1765 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
1766 else
1767 s.target = V4L2_SEL_TGT_CROP_DEFAULT;
1768
1769 ret = ops->vidioc_g_selection(file, fh, &s);
1770 if (ret)
1771 return ret;
1772 p->defrect = s.r;
1773
1774 /* setting trivial pixelaspect */
1775 p->pixelaspect.numerator = 1;
1776 p->pixelaspect.denominator = 1;
1777 return 0;
1778}
1779
f16f77b0
HV		 1780static int v4l_log_status(const struct v4l2_ioctl_ops *ops,
1781 struct file *file, void *fh, void *arg)
1782{
1783 struct video_device *vfd = video_devdata(file);
1784 int ret;
1785
1786 if (vfd->v4l2_dev)
1787 pr_info("%s: ================= START STATUS =================\n",
1788 vfd->v4l2_dev->name);
1789 ret = ops->vidioc_log_status(file, fh);
1790 if (vfd->v4l2_dev)
1791 pr_info("%s: ================== END STATUS ==================\n",
1792 vfd->v4l2_dev->name);
1793 return ret;
1794}
1795
1796static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
1797 struct file *file, void *fh, void *arg)
1798{
1799#ifdef CONFIG_VIDEO_ADV_DEBUG
1800 struct v4l2_dbg_register *p = arg;
79b0c640
HV		 1801 struct video_device *vfd = video_devdata(file);
1802 struct v4l2_subdev *sd;
1803 int idx = 0;
f16f77b0
HV		 1804
1805 if (!capable(CAP_SYS_ADMIN))
1806 return -EPERM;
3eef2510 1807 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
79b0c640
HV		 1808 if (vfd->v4l2_dev == NULL)
1809 return -EINVAL;
3eef2510
HV		 1810 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
1811 if (p->match.addr == idx++)
79b0c640 1812 return v4l2_subdev_call(sd, core, g_register, p);
79b0c640
HV		 1813 return -EINVAL;
1814 }
191b79b0
HV		 1815 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
1816 (ops->vidioc_g_chip_info || p->match.addr == 0))
79b0c640
HV		 1817 return ops->vidioc_g_register(file, fh, p);
1818 return -EINVAL;
f16f77b0
HV		 1819#else
1820 return -ENOTTY;
1821#endif
1822}
1823
1824static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
1825 struct file *file, void *fh, void *arg)
1826{
1827#ifdef CONFIG_VIDEO_ADV_DEBUG
977ba3b1 1828 const struct v4l2_dbg_register *p = arg;
79b0c640
HV		 1829 struct video_device *vfd = video_devdata(file);
1830 struct v4l2_subdev *sd;
1831 int idx = 0;
f16f77b0
HV		 1832
1833 if (!capable(CAP_SYS_ADMIN))
1834 return -EPERM;
3eef2510 1835 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
79b0c640
HV		 1836 if (vfd->v4l2_dev == NULL)
1837 return -EINVAL;
3eef2510
HV		 1838 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
1839 if (p->match.addr == idx++)
79b0c640 1840 return v4l2_subdev_call(sd, core, s_register, p);
79b0c640
HV		 1841 return -EINVAL;
1842 }
191b79b0
HV		 1843 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
1844 (ops->vidioc_g_chip_info || p->match.addr == 0))
79b0c640
HV		 1845 return ops->vidioc_s_register(file, fh, p);
1846 return -EINVAL;
f16f77b0
HV		 1847#else
1848 return -ENOTTY;
1849#endif
1850}
1851
96b03d2a 1852static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,
79b0c640
HV		 1853 struct file *file, void *fh, void *arg)
1854{
cd634f1b 1855#ifdef CONFIG_VIDEO_ADV_DEBUG
79b0c640 1856 struct video_device *vfd = video_devdata(file);
96b03d2a 1857 struct v4l2_dbg_chip_info *p = arg;
79b0c640
HV		 1858 struct v4l2_subdev *sd;
1859 int idx = 0;
1860
1861 switch (p->match.type) {
1862 case V4L2_CHIP_MATCH_BRIDGE:
79b0c640
HV		 1863 if (ops->vidioc_s_register)
1864 p->flags |= V4L2_CHIP_FL_WRITABLE;
1865 if (ops->vidioc_g_register)
1866 p->flags |= V4L2_CHIP_FL_READABLE;
1c1d86a1 1867 strlcpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));
96b03d2a
HV		 1868 if (ops->vidioc_g_chip_info)
1869 return ops->vidioc_g_chip_info(file, fh, arg);
0f0fe4b9
HV		 1870 if (p->match.addr)
1871 return -EINVAL;
79b0c640
HV		 1872 return 0;
1873
3eef2510 1874 case V4L2_CHIP_MATCH_SUBDEV:
79b0c640
HV		 1875 if (vfd->v4l2_dev == NULL)
1876 break;
1877 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {
3eef2510
HV		 1878 if (p->match.addr != idx++)
1879 continue;
1880 if (sd->ops->core && sd->ops->core->s_register)
1881 p->flags |= V4L2_CHIP_FL_WRITABLE;
1882 if (sd->ops->core && sd->ops->core->g_register)
1883 p->flags |= V4L2_CHIP_FL_READABLE;
1884 strlcpy(p->name, sd->name, sizeof(p->name));
1885 return 0;
79b0c640
HV		 1886 }
1887 break;
1888 }
1889 return -EINVAL;
cd634f1b
HV		 1890#else
1891 return -ENOTTY;
1892#endif
79b0c640
HV		 1893}
1894
458aa4a6
HV		 1895static int v4l_dqevent(const struct v4l2_ioctl_ops *ops,
1896 struct file *file, void *fh, void *arg)
1897{
1898 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK);
1899}
1900
1901static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,
1902 struct file *file, void *fh, void *arg)
1903{
1904 return ops->vidioc_subscribe_event(fh, arg);
1905}
1906
1907static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,
1908 struct file *file, void *fh, void *arg)
1909{
1910 return ops->vidioc_unsubscribe_event(fh, arg);
1911}
1912
1913static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,
1914 struct file *file, void *fh, void *arg)
1915{
1916 struct v4l2_sliced_vbi_cap *p = arg;
4b20259f
HV		 1917 int ret = check_fmt(file, p->type);
1918
1919 if (ret)
1920 return ret;
458aa4a6
HV		 1921
1922 /* Clear up to type, everything after type is zeroed already */
1923 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
1924
1925 return ops->vidioc_g_sliced_vbi_cap(file, fh, p);
1926}
1927
82b655bf
HV		 1928static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
1929 struct file *file, void *fh, void *arg)
1930{
1931 struct video_device *vfd = video_devdata(file);
1932 struct v4l2_frequency_band *p = arg;
1933 enum v4l2_tuner_type type;
1934 int err;
1935
84099a28
AP		 1936 if (vfd->vfl_type == VFL_TYPE_SDR) {
1937 if (p->type != V4L2_TUNER_ADC && p->type != V4L2_TUNER_RF)
1938 return -EINVAL;
1939 type = p->type;
1940 } else {
1941 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1942 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1943 if (type != p->type)
1944 return -EINVAL;
1945 }
82b655bf
HV		 1946 if (ops->vidioc_enum_freq_bands)
1947 return ops->vidioc_enum_freq_bands(file, fh, p);
73f35418 1948 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) {
82b655bf
HV		 1949 struct v4l2_tuner t = {
1950 .index = p->tuner,
1951 .type = type,
1952 };
1953
aa4d9b53
HV		 1954 if (p->index)
1955 return -EINVAL;
82b655bf
HV		 1956 err = ops->vidioc_g_tuner(file, fh, &t);
1957 if (err)
1958 return err;
1959 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;
1960 p->rangelow = t.rangelow;
1961 p->rangehigh = t.rangehigh;
1962 p->modulation = (type == V4L2_TUNER_RADIO) ?
1963 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
1964 return 0;
1965 }
73f35418 1966 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) {
82b655bf
HV		 1967 struct v4l2_modulator m = {
1968 .index = p->tuner,
1969 };
1970
1971 if (type != V4L2_TUNER_RADIO)
1972 return -EINVAL;
aa4d9b53
HV		 1973 if (p->index)
1974 return -EINVAL;
82b655bf
HV		 1975 err = ops->vidioc_g_modulator(file, fh, &m);
1976 if (err)
1977 return err;
1978 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;
1979 p->rangelow = m.rangelow;
1980 p->rangehigh = m.rangehigh;
1981 p->modulation = (type == V4L2_TUNER_RADIO) ?
1982 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
1983 return 0;
1984 }
1985 return -ENOTTY;
1986}
1987
4839e6c2
HV		 1988struct v4l2_ioctl_info {
1989 unsigned int ioctl;
27cd2aba 1990 u32 flags;
4839e6c2 1991 const char * const name;
86748f35
HV		 1992 union {
1993 u32 offset;
1994 int (*func)(const struct v4l2_ioctl_ops *ops,
1995 struct file *file, void *fh, void *p);
26ddcbcc 1996 } u;
86748f35 1997 void (*debug)(const void *arg, bool write_only);
4839e6c2
HV		 1998};
1999
2000/* This control needs a priority check */
2001#define INFO_FL_PRIO (1 << 0)
2002/* This control can be valid if the filehandle passes a control handler. */
2003#define INFO_FL_CTRL (1 << 1)
86748f35
HV		 2004/* This is a standard ioctl, no need for special code */
2005#define INFO_FL_STD (1 << 2)
2006/* This is ioctl has its own function */
2007#define INFO_FL_FUNC (1 << 3)
5a5adf6b
HV		 2008/* Queuing ioctl */
2009#define INFO_FL_QUEUE (1 << 4)
27cd2aba
HV		 2010/* Zero struct from after the field to the end */
2011#define INFO_FL_CLEAR(v4l2_struct, field) \
2012 ((offsetof(struct v4l2_struct, field) + \
2013 sizeof(((struct v4l2_struct *)0)->field)) << 16)
2014#define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
4839e6c2 2015
86748f35
HV		 2016#define IOCTL_INFO_STD(_ioctl, _vidioc, _debug, _flags) \
2017 [_IOC_NR(_ioctl)] = { \
2018 .ioctl = _ioctl, \
2019 .flags = _flags | INFO_FL_STD, \
2020 .name = #_ioctl, \
26ddcbcc 2021 .u.offset = offsetof(struct v4l2_ioctl_ops, _vidioc), \
86748f35
HV		 2022 .debug = _debug, \
2023 }
2024
2025#define IOCTL_INFO_FNC(_ioctl, _func, _debug, _flags) \
2026 [_IOC_NR(_ioctl)] = { \
2027 .ioctl = _ioctl, \
2028 .flags = _flags | INFO_FL_FUNC, \
2029 .name = #_ioctl, \
26ddcbcc 2030 .u.func = _func, \
86748f35
HV		 2031 .debug = _debug, \
2032 }
2033
4839e6c2 2034static struct v4l2_ioctl_info v4l2_ioctls[] = {
59076122 2035 IOCTL_INFO_FNC(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
be6c64e4
HV		 2036 IOCTL_INFO_FNC(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)),
2037 IOCTL_INFO_FNC(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, INFO_FL_CLEAR(v4l2_format, type)),
2038 IOCTL_INFO_FNC(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
5a5adf6b
HV		 2039 IOCTL_INFO_FNC(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2040 IOCTL_INFO_FNC(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
be6c64e4
HV		 2041 IOCTL_INFO_STD(VIDIOC_G_FBUF, vidioc_g_fbuf, v4l_print_framebuffer, 0),
2042 IOCTL_INFO_STD(VIDIOC_S_FBUF, vidioc_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
737c097b 2043 IOCTL_INFO_FNC(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO),
5a5adf6b 2044 IOCTL_INFO_FNC(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),
b799d09a 2045 IOCTL_INFO_STD(VIDIOC_EXPBUF, vidioc_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)),
5a5adf6b
HV		 2046 IOCTL_INFO_FNC(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),
2047 IOCTL_INFO_FNC(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2048 IOCTL_INFO_FNC(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
eb3728ed
HV		 2049 IOCTL_INFO_FNC(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
2050 IOCTL_INFO_FNC(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
ca371575 2051 IOCTL_INFO_STD(VIDIOC_G_STD, vidioc_g_std, v4l_print_std, 0),
4b1e2e4d
HV		 2052 IOCTL_INFO_FNC(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
2053 IOCTL_INFO_FNC(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
59076122 2054 IOCTL_INFO_FNC(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
efbceecd
HV		 2055 IOCTL_INFO_FNC(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
2056 IOCTL_INFO_FNC(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
4b1e2e4d
HV		 2057 IOCTL_INFO_FNC(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
2058 IOCTL_INFO_FNC(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
59076122
HV		 2059 IOCTL_INFO_STD(VIDIOC_G_AUDIO, vidioc_g_audio, v4l_print_audio, 0),
2060 IOCTL_INFO_STD(VIDIOC_S_AUDIO, vidioc_s_audio, v4l_print_audio, INFO_FL_PRIO),
efbceecd
HV		 2061 IOCTL_INFO_FNC(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
2062 IOCTL_INFO_FNC(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
59076122
HV		 2063 IOCTL_INFO_STD(VIDIOC_G_INPUT, vidioc_g_input, v4l_print_u32, 0),
2064 IOCTL_INFO_FNC(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
2065 IOCTL_INFO_STD(VIDIOC_G_OUTPUT, vidioc_g_output, v4l_print_u32, 0),
2066 IOCTL_INFO_FNC(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
2067 IOCTL_INFO_FNC(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
2068 IOCTL_INFO_STD(VIDIOC_G_AUDOUT, vidioc_g_audout, v4l_print_audioout, 0),
2069 IOCTL_INFO_STD(VIDIOC_S_AUDOUT, vidioc_s_audout, v4l_print_audioout, INFO_FL_PRIO),
82b655bf 2070 IOCTL_INFO_FNC(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
4b1e2e4d
HV		 2071 IOCTL_INFO_STD(VIDIOC_S_MODULATOR, vidioc_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
2072 IOCTL_INFO_FNC(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
2073 IOCTL_INFO_FNC(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
d84f2d94
HV		 2074 IOCTL_INFO_FNC(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
2075 IOCTL_INFO_FNC(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
2076 IOCTL_INFO_FNC(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
2077 IOCTL_INFO_STD(VIDIOC_G_SELECTION, vidioc_g_selection, v4l_print_selection, 0),
2078 IOCTL_INFO_STD(VIDIOC_S_SELECTION, vidioc_s_selection, v4l_print_selection, INFO_FL_PRIO),
d806f2df
HV		 2079 IOCTL_INFO_STD(VIDIOC_G_JPEGCOMP, vidioc_g_jpegcomp, v4l_print_jpegcompression, 0),
2080 IOCTL_INFO_STD(VIDIOC_S_JPEGCOMP, vidioc_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
4b1e2e4d 2081 IOCTL_INFO_FNC(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
be6c64e4 2082 IOCTL_INFO_FNC(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
59076122
HV		 2083 IOCTL_INFO_STD(VIDIOC_ENUMAUDIO, vidioc_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
2084 IOCTL_INFO_STD(VIDIOC_ENUMAUDOUT, vidioc_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
d0547cba
HV		 2085 IOCTL_INFO_FNC(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
2086 IOCTL_INFO_FNC(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
458aa4a6 2087 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 2088 IOCTL_INFO_FNC(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
efbceecd
HV		 2089 IOCTL_INFO_FNC(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2090 IOCTL_INFO_FNC(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL),
9bc31633 2091 IOCTL_INFO_FNC(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
458aa4a6
HV		 2092 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMESIZES, vidioc_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
2093 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMEINTERVALS, vidioc_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
d806f2df
HV		 2094 IOCTL_INFO_STD(VIDIOC_G_ENC_INDEX, vidioc_g_enc_index, v4l_print_enc_idx, 0),
2095 IOCTL_INFO_STD(VIDIOC_ENCODER_CMD, vidioc_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2096 IOCTL_INFO_STD(VIDIOC_TRY_ENCODER_CMD, vidioc_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2097 IOCTL_INFO_STD(VIDIOC_DECODER_CMD, vidioc_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
2098 IOCTL_INFO_STD(VIDIOC_TRY_DECODER_CMD, vidioc_try_decoder_cmd, v4l_print_decoder_cmd, 0),
f16f77b0
HV		 2099 IOCTL_INFO_FNC(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
2100 IOCTL_INFO_FNC(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
4b1e2e4d 2101 IOCTL_INFO_FNC(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
efc626b0
HV		 2102 IOCTL_INFO_STD(VIDIOC_S_DV_TIMINGS, vidioc_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO),
2103 IOCTL_INFO_STD(VIDIOC_G_DV_TIMINGS, vidioc_g_dv_timings, v4l_print_dv_timings, 0),
458aa4a6
HV		 2104 IOCTL_INFO_FNC(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
2105 IOCTL_INFO_FNC(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
2106 IOCTL_INFO_FNC(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
5a5adf6b
HV		 2107 IOCTL_INFO_FNC(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2108 IOCTL_INFO_FNC(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
efc626b0
HV		 2109 IOCTL_INFO_STD(VIDIOC_ENUM_DV_TIMINGS, vidioc_enum_dv_timings, v4l_print_enum_dv_timings, 0),
2110 IOCTL_INFO_STD(VIDIOC_QUERY_DV_TIMINGS, vidioc_query_dv_timings, v4l_print_dv_timings, 0),
a1acb8f9 2111 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 2112 IOCTL_INFO_FNC(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
96b03d2a 2113 IOCTL_INFO_FNC(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
4839e6c2
HV		 2114};
2115#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
2116
2117bool v4l2_is_known_ioctl(unsigned int cmd)
2118{
2119 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2120 return false;
2121 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
2122}
2123
5a5adf6b
HV		 2124struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd)
2125{
2126 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2127 return vdev->lock;
2128 if (test_bit(_IOC_NR(cmd), vdev->disable_locking))
2129 return NULL;
2130 if (vdev->queue && vdev->queue->lock &&
2131 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
2132 return vdev->queue->lock;
2133 return vdev->lock;
2134}
2135
4839e6c2
HV		 2136/* Common ioctl debug function. This function can be used by
2137 external ioctl messages as well as internal V4L ioctl */
4a085168 2138void v4l_printk_ioctl(const char *prefix, unsigned int cmd)
4839e6c2 2139{
86748f35 2140 const char *dir, *type;
4839e6c2 2141
4a085168
HV		 2142 if (prefix)
2143 printk(KERN_DEBUG "%s: ", prefix);
2144
4839e6c2
HV		 2145 switch (_IOC_TYPE(cmd)) {
2146 case 'd':
2147 type = "v4l2_int";
2148 break;
2149 case 'V':
2150 if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
2151 type = "v4l2";
2152 break;
2153 }
86748f35 2154 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
4839e6c2
HV		 2155 return;
2156 default:
2157 type = "unknown";
86748f35 2158 break;
4839e6c2
HV		 2159 }
2160
2161 switch (_IOC_DIR(cmd)) {
2162 case _IOC_NONE: dir = "--"; break;
2163 case _IOC_READ: dir = "r-"; break;
2164 case _IOC_WRITE: dir = "-w"; break;
2165 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
2166 default: dir = "*ERR*"; break;
2167 }
86748f35 2168 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
4839e6c2
HV		 2169 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
2170}
2171EXPORT_SYMBOL(v4l_printk_ioctl);
2172
069b7479 2173static long __video_do_ioctl(struct file *file,
35ea11ff
HV		 2174 unsigned int cmd, void *arg)
2175{
2176 struct video_device *vfd = video_devdata(file);
a399810c 2177 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
86748f35
HV		 2178 bool write_only = false;
2179 struct v4l2_ioctl_info default_info;
2180 const struct v4l2_ioctl_info *info;
d5fbf32f 2181 void *fh = file->private_data;
99cd47bc 2182 struct v4l2_fh *vfh = NULL;
b1a873a3 2183 int use_fh_prio = 0;
80131fe0 2184 int debug = vfd->debug;
9190d191 2185 long ret = -ENOTTY;
35ea11ff 2186
6a717883 2187 if (ops == NULL) {
4a085168
HV		 2188 pr_warn("%s: has no ioctl_ops.\n",
2189 video_device_node_name(vfd));
9190d191 2190 return ret;
6a717883
HV		 2191 }
2192
b1a873a3 2193 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) {
99cd47bc 2194 vfh = file->private_data;
b1a873a3
HV		 2195 use_fh_prio = test_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
2196 }
99cd47bc 2197
48ea0be0 2198 if (v4l2_is_known_ioctl(cmd)) {
86748f35 2199 info = &v4l2_ioctls[_IOC_NR(cmd)];
48ea0be0
HV		 2200
2201 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) &&
2202 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
86748f35 2203 goto done;
4b902fec
HV		 2204
2205 if (use_fh_prio && (info->flags & INFO_FL_PRIO)) {
2206 ret = v4l2_prio_check(vfd->prio, vfh->prio);
2207 if (ret)
86748f35 2208 goto done;
4b902fec 2209 }
86748f35
HV		 2210 } else {
2211 default_info.ioctl = cmd;
2212 default_info.flags = 0;
f18d8e07 2213 default_info.debug = v4l_print_default;
86748f35 2214 info = &default_info;
48ea0be0
HV		 2215 }
2216
86748f35 2217 write_only = _IOC_DIR(cmd) == _IOC_WRITE;
86748f35
HV		 2218 if (info->flags & INFO_FL_STD) {
2219 typedef int (*vidioc_op)(struct file *file, void *fh, void *p);
2220 const void *p = vfd->ioctl_ops;
26ddcbcc 2221 const vidioc_op *vidioc = p + info->u.offset;
86748f35
HV		 2222
2223 ret = (*vidioc)(file, fh, arg);
86748f35 2224 } else if (info->flags & INFO_FL_FUNC) {
26ddcbcc 2225 ret = info->u.func(ops, file, fh, arg);
f18d8e07
HV		 2226 } else if (!ops->vidioc_default) {
2227 ret = -ENOTTY;
2228 } else {
2229 ret = ops->vidioc_default(file, fh,
2230 use_fh_prio ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
2231 cmd, arg);
48ea0be0 2232 }
99cd47bc 2233
86748f35 2234done:
80131fe0 2235 if (debug) {
4a085168 2236 v4l_printk_ioctl(video_device_node_name(vfd), cmd);
86748f35 2237 if (ret < 0)
505d04bd
HV		 2238 pr_cont(": error %ld", ret);
2239 if (debug == V4L2_DEBUG_IOCTL)
86748f35 2240 pr_cont("\n");
86748f35
HV		 2241 else if (_IOC_DIR(cmd) == _IOC_NONE)
2242 info->debug(arg, write_only);
2243 else {
2244 pr_cont(": ");
2245 info->debug(arg, write_only);
35ea11ff
HV		 2246 }
2247 }
2248
2249 return ret;
2250}
2251
d14e6d76
PO		 2252static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
2253 void * __user *user_ptr, void ***kernel_ptr)
2254{
2255 int ret = 0;
2256
2257 switch (cmd) {
96b1a702 2258 case VIDIOC_PREPARE_BUF:
d14e6d76
PO		 2259 case VIDIOC_QUERYBUF:
2260 case VIDIOC_QBUF:
2261 case VIDIOC_DQBUF: {
2262 struct v4l2_buffer *buf = parg;
2263
2264 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
2265 if (buf->length > VIDEO_MAX_PLANES) {
2266 ret = -EINVAL;
2267 break;
2268 }
2269 *user_ptr = (void __user *)buf->m.planes;
2ef40370 2270 *kernel_ptr = (void *)&buf->m.planes;
d14e6d76
PO		 2271 *array_size = sizeof(struct v4l2_plane) * buf->length;
2272 ret = 1;
2273 }
2274 break;
2275 }
2276
ed45ce2c
HV		 2277 case VIDIOC_SUBDEV_G_EDID:
2278 case VIDIOC_SUBDEV_S_EDID: {
2279 struct v4l2_subdev_edid *edid = parg;
2280
2281 if (edid->blocks) {
1b8b10cc
HV		 2282 if (edid->blocks > 256) {
2283 ret = -EINVAL;
2284 break;
2285 }
ed45ce2c
HV		 2286 *user_ptr = (void __user *)edid->edid;
2287 *kernel_ptr = (void *)&edid->edid;
2288 *array_size = edid->blocks * 128;
2289 ret = 1;
2290 }
2291 break;
2292 }
2293
d14e6d76
PO		 2294 case VIDIOC_S_EXT_CTRLS:
2295 case VIDIOC_G_EXT_CTRLS:
2296 case VIDIOC_TRY_EXT_CTRLS: {
2297 struct v4l2_ext_controls *ctrls = parg;
2298
2299 if (ctrls->count != 0) {
6c06108b
DC		 2300 if (ctrls->count > V4L2_CID_MAX_CTRLS) {
2301 ret = -EINVAL;
2302 break;
2303 }
d14e6d76 2304 *user_ptr = (void __user *)ctrls->controls;
2ef40370 2305 *kernel_ptr = (void *)&ctrls->controls;
d14e6d76
PO		 2306 *array_size = sizeof(struct v4l2_ext_control)
2307 * ctrls->count;
2308 ret = 1;
2309 }
2310 break;
2311 }
2312 }
2313
2314 return ret;
2315}
2316
fc0a8079
LP		 2317long
2318video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
2319 v4l2_kioctl func)
35ea11ff
HV		 2320{
2321 char sbuf[128];
2322 void *mbuf = NULL;
1d94aa36 2323 void *parg = (void *)arg;
069b7479 2324 long err = -EINVAL;
d14e6d76
PO		 2325 bool has_array_args;
2326 size_t array_size = 0;
35ea11ff 2327 void __user *user_ptr = NULL;
d14e6d76 2328 void **kernel_ptr = NULL;
35ea11ff 2329
35ea11ff 2330 /* Copy arguments into temp kernel buffer */
337f9d20 2331 if (_IOC_DIR(cmd) != _IOC_NONE) {
35ea11ff
HV		 2332 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
2333 parg = sbuf;
2334 } else {
2335 /* too big to allocate from stack */
2336 mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
2337 if (NULL == mbuf)
2338 return -ENOMEM;
2339 parg = mbuf;
2340 }
2341
2342 err = -EFAULT;
19c96e4b 2343 if (_IOC_DIR(cmd) & _IOC_WRITE) {
27cd2aba
HV		 2344 unsigned int n = _IOC_SIZE(cmd);
2345
2346 /*
2347 * In some cases, only a few fields are used as input,
2348 * i.e. when the app sets "index" and then the driver
2349 * fills in the rest of the structure for the thing
2350 * with that index. We only need to copy up the first
2351 * non-input field.
2352 */
2353 if (v4l2_is_known_ioctl(cmd)) {
2354 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags;
2355 if (flags & INFO_FL_CLEAR_MASK)
2356 n = (flags & INFO_FL_CLEAR_MASK) >> 16;
2357 }
19c96e4b
TP		 2358
2359 if (copy_from_user(parg, (void __user *)arg, n))
35ea11ff 2360 goto out;
19c96e4b
TP		 2361
2362 /* zero out anything we don't copy from userspace */
2363 if (n < _IOC_SIZE(cmd))
2364 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n);
337f9d20
TP		 2365 } else {
2366 /* read-only ioctl */
2367 memset(parg, 0, _IOC_SIZE(cmd));
19c96e4b 2368 }
35ea11ff
HV		 2369 }
2370
d14e6d76
PO		 2371 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
2372 if (err < 0)
2373 goto out;
2374 has_array_args = err;
35ea11ff 2375
d14e6d76
PO		 2376 if (has_array_args) {
2377 /*
2378 * When adding new types of array args, make sure that the
2379 * parent argument to ioctl (which contains the pointer to the
2380 * array) fits into sbuf (so that mbuf will still remain
2381 * unused up to here).
2382 */
2383 mbuf = kmalloc(array_size, GFP_KERNEL);
2384 err = -ENOMEM;
2385 if (NULL == mbuf)
2386 goto out_array_args;
2387 err = -EFAULT;
2388 if (copy_from_user(mbuf, user_ptr, array_size))
2389 goto out_array_args;
2390 *kernel_ptr = mbuf;
35ea11ff
HV		 2391 }
2392
2393 /* Handles IOCTL */
fc0a8079 2394 err = func(file, cmd, parg);
35ea11ff 2395 if (err == -ENOIOCTLCMD)
02bbb814 2396 err = -ENOTTY;
aa32f4c0
HV		 2397 if (err == 0) {
2398 if (cmd == VIDIOC_DQBUF)
2399 trace_v4l2_dqbuf(video_devdata(file)->minor, parg);
2400 else if (cmd == VIDIOC_QBUF)
2401 trace_v4l2_qbuf(video_devdata(file)->minor, parg);
2402 }
35ea11ff 2403
d14e6d76
PO		 2404 if (has_array_args) {
2405 *kernel_ptr = user_ptr;
2406 if (copy_to_user(user_ptr, mbuf, array_size))
35ea11ff 2407 err = -EFAULT;
d14e6d76 2408 goto out_array_args;
35ea11ff 2409 }
5d7758ee
HV		 2410 /* VIDIOC_QUERY_DV_TIMINGS can return an error, but still have valid
2411 results that must be returned. */
2412 if (err < 0 && cmd != VIDIOC_QUERY_DV_TIMINGS)
35ea11ff
HV		 2413 goto out;
2414
d14e6d76 2415out_array_args:
35ea11ff
HV		 2416 /* Copy results into user buffer */
2417 switch (_IOC_DIR(cmd)) {
2418 case _IOC_READ:
2419 case (_IOC_WRITE | _IOC_READ):
2420 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
2421 err = -EFAULT;
2422 break;
2423 }
2424
2425out:
2426 kfree(mbuf);
2427 return err;
2428}
fc0a8079
LP		 2429EXPORT_SYMBOL(video_usercopy);
2430
2431long video_ioctl2(struct file *file,
2432 unsigned int cmd, unsigned long arg)
2433{
2434 return video_usercopy(file, cmd, arg, __video_do_ioctl);
2435}
8a522c91 2436EXPORT_SYMBOL(video_ioctl2);
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