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[media] v4l2-dev: disable selection ioctls for non-video devices
[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 259 "bytesperline=%u, sizeimage=%u, colorspace=%d, "
1e8faa59 260 "flags=0x%x, ycbcr_enc=%u, quantization=%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,
736d96b5
HV		 268 pix->colorspace, pix->flags, pix->ycbcr_enc,
269 pix->quantization);
be6c64e4
HV		 270 break;
271 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
272 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
273 mp = &p->fmt.pix_mp;
274 pr_cont(", width=%u, height=%u, "
275 "format=%c%c%c%c, field=%s, "
1e8faa59 276 "colorspace=%d, num_planes=%u, flags=0x%x, "
736d96b5 277 "ycbcr_enc=%u, quantization=%u\n",
be6c64e4
HV		 278 mp->width, mp->height,
279 (mp->pixelformat & 0xff),
280 (mp->pixelformat >> 8) & 0xff,
281 (mp->pixelformat >> 16) & 0xff,
282 (mp->pixelformat >> 24) & 0xff,
283 prt_names(mp->field, v4l2_field_names),
736d96b5
HV		 284 mp->colorspace, mp->num_planes, mp->flags,
285 mp->ycbcr_enc, mp->quantization);
be6c64e4
HV		 286 for (i = 0; i < mp->num_planes; i++)
287 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i,
288 mp->plane_fmt[i].bytesperline,
289 mp->plane_fmt[i].sizeimage);
290 break;
291 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
292 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
293 win = &p->fmt.win;
560dde24
HV		 294 /* Note: we can't print the clip list here since the clips
295 * pointer is a userspace pointer, not a kernelspace
296 * pointer. */
297 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",
298 win->w.width, win->w.height, win->w.left, win->w.top,
be6c64e4 299 prt_names(win->field, v4l2_field_names),
560dde24
HV		 300 win->chromakey, win->clipcount, win->clips,
301 win->bitmap, win->global_alpha);
be6c64e4
HV		 302 break;
303 case V4L2_BUF_TYPE_VBI_CAPTURE:
304 case V4L2_BUF_TYPE_VBI_OUTPUT:
305 vbi = &p->fmt.vbi;
306 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, "
307 "sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n",
308 vbi->sampling_rate, vbi->offset,
309 vbi->samples_per_line,
310 (vbi->sample_format & 0xff),
311 (vbi->sample_format >> 8) & 0xff,
312 (vbi->sample_format >> 16) & 0xff,
313 (vbi->sample_format >> 24) & 0xff,
314 vbi->start[0], vbi->start[1],
315 vbi->count[0], vbi->count[1]);
316 break;
317 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
318 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
319 sliced = &p->fmt.sliced;
320 pr_cont(", service_set=0x%08x, io_size=%d\n",
321 sliced->service_set, sliced->io_size);
322 for (i = 0; i < 24; i++)
323 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
324 sliced->service_lines[0][i],
325 sliced->service_lines[1][i]);
326 break;
582c52cb
AP		 327 case V4L2_BUF_TYPE_SDR_CAPTURE:
328 sdr = &p->fmt.sdr;
329 pr_cont(", pixelformat=%c%c%c%c\n",
330 (sdr->pixelformat >> 0) & 0xff,
331 (sdr->pixelformat >> 8) & 0xff,
332 (sdr->pixelformat >> 16) & 0xff,
333 (sdr->pixelformat >> 24) & 0xff);
334 break;
be6c64e4
HV		 335 }
336}
337
338static void v4l_print_framebuffer(const void *arg, bool write_only)
339{
340 const struct v4l2_framebuffer *p = arg;
341
342 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, "
343 "height=%u, pixelformat=%c%c%c%c, "
560dde24 344 "bytesperline=%u, sizeimage=%u, colorspace=%d\n",
be6c64e4
HV		 345 p->capability, p->flags, p->base,
346 p->fmt.width, p->fmt.height,
347 (p->fmt.pixelformat & 0xff),
348 (p->fmt.pixelformat >> 8) & 0xff,
349 (p->fmt.pixelformat >> 16) & 0xff,
350 (p->fmt.pixelformat >> 24) & 0xff,
351 p->fmt.bytesperline, p->fmt.sizeimage,
352 p->fmt.colorspace);
353}
354
e325b244
HV		 355static void v4l_print_buftype(const void *arg, bool write_only)
356{
357 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names));
358}
359
4b1e2e4d
HV		 360static void v4l_print_modulator(const void *arg, bool write_only)
361{
362 const struct v4l2_modulator *p = arg;
363
364 if (write_only)
560dde24 365 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans);
4b1e2e4d 366 else
27d5a87c 367 pr_cont("index=%u, name=%.*s, capability=0x%x, "
4b1e2e4d 368 "rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
27d5a87c 369 p->index, (int)sizeof(p->name), p->name, p->capability,
4b1e2e4d
HV		 370 p->rangelow, p->rangehigh, p->txsubchans);
371}
372
373static void v4l_print_tuner(const void *arg, bool write_only)
374{
375 const struct v4l2_tuner *p = arg;
376
377 if (write_only)
378 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode);
379 else
27d5a87c 380 pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, "
4b1e2e4d
HV		 381 "rangelow=%u, rangehigh=%u, signal=%u, afc=%d, "
382 "rxsubchans=0x%x, audmode=%u\n",
27d5a87c 383 p->index, (int)sizeof(p->name), p->name, p->type,
4b1e2e4d
HV		 384 p->capability, p->rangelow,
385 p->rangehigh, p->signal, p->afc,
386 p->rxsubchans, p->audmode);
387}
388
389static void v4l_print_frequency(const void *arg, bool write_only)
390{
391 const struct v4l2_frequency *p = arg;
392
393 pr_cont("tuner=%u, type=%u, frequency=%u\n",
394 p->tuner, p->type, p->frequency);
395}
396
397static void v4l_print_standard(const void *arg, bool write_only)
398{
399 const struct v4l2_standard *p = arg;
400
27d5a87c 401 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, "
4b1e2e4d 402 "framelines=%u\n", p->index,
27d5a87c 403 (unsigned long long)p->id, (int)sizeof(p->name), p->name,
4b1e2e4d
HV		 404 p->frameperiod.numerator,
405 p->frameperiod.denominator,
406 p->framelines);
407}
408
409static void v4l_print_std(const void *arg, bool write_only)
410{
411 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg);
412}
413
414static void v4l_print_hw_freq_seek(const void *arg, bool write_only)
415{
416 const struct v4l2_hw_freq_seek *p = arg;
417
5e788317
HV		 418 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, "
419 "rangelow=%u, rangehigh=%u\n",
420 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing,
421 p->rangelow, p->rangehigh);
4b1e2e4d
HV		 422}
423
eb3728ed 424static void v4l_print_requestbuffers(const void *arg, bool write_only)
59076122 425{
eb3728ed
HV		 426 const struct v4l2_requestbuffers *p = arg;
427
428 pr_cont("count=%d, type=%s, memory=%s\n",
429 p->count,
430 prt_names(p->type, v4l2_type_names),
431 prt_names(p->memory, v4l2_memory_names));
59076122
HV		 432}
433
eb3728ed 434static void v4l_print_buffer(const void *arg, bool write_only)
35ea11ff 435{
eb3728ed
HV		 436 const struct v4l2_buffer *p = arg;
437 const struct v4l2_timecode *tc = &p->timecode;
438 const struct v4l2_plane *plane;
d14e6d76 439 int i;
35ea11ff 440
eb3728ed
HV		 441 pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, "
442 "flags=0x%08x, field=%s, sequence=%d, memory=%s",
35ea11ff
HV		 443 p->timestamp.tv_sec / 3600,
444 (int)(p->timestamp.tv_sec / 60) % 60,
445 (int)(p->timestamp.tv_sec % 60),
b045979d 446 (long)p->timestamp.tv_usec,
35ea11ff
HV		 447 p->index,
448 prt_names(p->type, v4l2_type_names),
eb3728ed
HV		 449 p->flags, prt_names(p->field, v4l2_field_names),
450 p->sequence, prt_names(p->memory, v4l2_memory_names));
d14e6d76
PO		 451
452 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
eb3728ed 453 pr_cont("\n");
d14e6d76
PO		 454 for (i = 0; i < p->length; ++i) {
455 plane = &p->m.planes[i];
eb3728ed 456 printk(KERN_DEBUG
560dde24 457 "plane %d: bytesused=%d, data_offset=0x%08x, "
eb3728ed 458 "offset/userptr=0x%lx, length=%d\n",
d14e6d76
PO		 459 i, plane->bytesused, plane->data_offset,
460 plane->m.userptr, plane->length);
461 }
462 } else {
560dde24 463 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n",
d14e6d76
PO		 464 p->bytesused, p->m.userptr, p->length);
465 }
466
eb3728ed
HV		 467 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, "
468 "flags=0x%08x, frames=%d, userbits=0x%08x\n",
35ea11ff
HV		 469 tc->hours, tc->minutes, tc->seconds,
470 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
471}
472
b799d09a
TS		 473static void v4l_print_exportbuffer(const void *arg, bool write_only)
474{
475 const struct v4l2_exportbuffer *p = arg;
476
477 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n",
478 p->fd, prt_names(p->type, v4l2_type_names),
479 p->index, p->plane, p->flags);
480}
481
eb3728ed
HV		 482static void v4l_print_create_buffers(const void *arg, bool write_only)
483{
484 const struct v4l2_create_buffers *p = arg;
485
486 pr_cont("index=%d, count=%d, memory=%s, ",
487 p->index, p->count,
488 prt_names(p->memory, v4l2_memory_names));
489 v4l_print_format(&p->format, write_only);
490}
491
492static void v4l_print_streamparm(const void *arg, bool write_only)
493{
494 const struct v4l2_streamparm *p = arg;
495
496 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
497
498 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
499 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
500 const struct v4l2_captureparm *c = &p->parm.capture;
501
502 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, "
503 "extendedmode=%d, readbuffers=%d\n",
504 c->capability, c->capturemode,
505 c->timeperframe.numerator, c->timeperframe.denominator,
506 c->extendedmode, c->readbuffers);
507 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
508 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
509 const struct v4l2_outputparm *c = &p->parm.output;
510
511 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, "
512 "extendedmode=%d, writebuffers=%d\n",
513 c->capability, c->outputmode,
514 c->timeperframe.numerator, c->timeperframe.denominator,
515 c->extendedmode, c->writebuffers);
560dde24
HV		 516 } else {
517 pr_cont("\n");
eb3728ed
HV		 518 }
519}
520
efbceecd
HV		 521static void v4l_print_queryctrl(const void *arg, bool write_only)
522{
523 const struct v4l2_queryctrl *p = arg;
524
27d5a87c 525 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, "
efbceecd 526 "step=%d, default=%d, flags=0x%08x\n",
27d5a87c 527 p->id, p->type, (int)sizeof(p->name), p->name,
efbceecd
HV		 528 p->minimum, p->maximum,
529 p->step, p->default_value, p->flags);
530}
531
e6bee368
HV		 532static void v4l_print_query_ext_ctrl(const void *arg, bool write_only)
533{
534 const struct v4l2_query_ext_ctrl *p = arg;
535
536 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%lld/%lld, "
537 "step=%lld, default=%lld, flags=0x%08x, elem_size=%u, elems=%u, "
0176077a 538 "nr_of_dims=%u, dims=%u,%u,%u,%u\n",
e6bee368
HV		 539 p->id, p->type, (int)sizeof(p->name), p->name,
540 p->minimum, p->maximum,
541 p->step, p->default_value, p->flags,
542 p->elem_size, p->elems, p->nr_of_dims,
0176077a 543 p->dims[0], p->dims[1], p->dims[2], p->dims[3]);
e6bee368
HV		 544}
545
efbceecd
HV		 546static void v4l_print_querymenu(const void *arg, bool write_only)
547{
548 const struct v4l2_querymenu *p = arg;
549
550 pr_cont("id=0x%x, index=%d\n", p->id, p->index);
551}
552
553static void v4l_print_control(const void *arg, bool write_only)
554{
555 const struct v4l2_control *p = arg;
556
557 pr_cont("id=0x%x, value=%d\n", p->id, p->value);
558}
559
560static void v4l_print_ext_controls(const void *arg, bool write_only)
561{
562 const struct v4l2_ext_controls *p = arg;
563 int i;
564
565 pr_cont("class=0x%x, count=%d, error_idx=%d",
566 p->ctrl_class, p->count, p->error_idx);
567 for (i = 0; i < p->count; i++) {
017ab36a 568 if (!p->controls[i].size)
efbceecd
HV		 569 pr_cont(", id/val=0x%x/0x%x",
570 p->controls[i].id, p->controls[i].value);
571 else
572 pr_cont(", id/size=0x%x/%u",
573 p->controls[i].id, p->controls[i].size);
574 }
575 pr_cont("\n");
576}
577
d84f2d94 578static void v4l_print_cropcap(const void *arg, bool write_only)
eb3728ed 579{
d84f2d94
HV		 580 const struct v4l2_cropcap *p = arg;
581
582 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, "
a112fbaf 583 "defrect wxh=%dx%d, x,y=%d,%d, "
d84f2d94
HV		 584 "pixelaspect %d/%d\n",
585 prt_names(p->type, v4l2_type_names),
586 p->bounds.width, p->bounds.height,
587 p->bounds.left, p->bounds.top,
588 p->defrect.width, p->defrect.height,
589 p->defrect.left, p->defrect.top,
590 p->pixelaspect.numerator, p->pixelaspect.denominator);
eb3728ed
HV		 591}
592
d84f2d94 593static void v4l_print_crop(const void *arg, bool write_only)
35ea11ff 594{
d84f2d94
HV		 595 const struct v4l2_crop *p = arg;
596
597 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n",
598 prt_names(p->type, v4l2_type_names),
599 p->c.width, p->c.height,
600 p->c.left, p->c.top);
601}
602
603static void v4l_print_selection(const void *arg, bool write_only)
604{
605 const struct v4l2_selection *p = arg;
606
607 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n",
608 prt_names(p->type, v4l2_type_names),
609 p->target, p->flags,
610 p->r.width, p->r.height, p->r.left, p->r.top);
611}
612
d806f2df
HV		 613static void v4l_print_jpegcompression(const void *arg, bool write_only)
614{
615 const struct v4l2_jpegcompression *p = arg;
616
617 pr_cont("quality=%d, APPn=%d, APP_len=%d, "
618 "COM_len=%d, jpeg_markers=0x%x\n",
619 p->quality, p->APPn, p->APP_len,
620 p->COM_len, p->jpeg_markers);
621}
622
623static void v4l_print_enc_idx(const void *arg, bool write_only)
624{
625 const struct v4l2_enc_idx *p = arg;
626
627 pr_cont("entries=%d, entries_cap=%d\n",
628 p->entries, p->entries_cap);
629}
630
631static void v4l_print_encoder_cmd(const void *arg, bool write_only)
632{
633 const struct v4l2_encoder_cmd *p = arg;
634
635 pr_cont("cmd=%d, flags=0x%x\n",
636 p->cmd, p->flags);
637}
638
639static void v4l_print_decoder_cmd(const void *arg, bool write_only)
640{
641 const struct v4l2_decoder_cmd *p = arg;
642
643 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags);
644
645 if (p->cmd == V4L2_DEC_CMD_START)
646 pr_info("speed=%d, format=%u\n",
647 p->start.speed, p->start.format);
648 else if (p->cmd == V4L2_DEC_CMD_STOP)
649 pr_info("pts=%llu\n", p->stop.pts);
650}
651
96b03d2a 652static void v4l_print_dbg_chip_info(const void *arg, bool write_only)
79b0c640 653{
96b03d2a 654 const struct v4l2_dbg_chip_info *p = arg;
79b0c640
HV		 655
656 pr_cont("type=%u, ", p->match.type);
3eef2510 657 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
79b0c640
HV		 658 pr_cont("name=%.*s, ",
659 (int)sizeof(p->match.name), p->match.name);
660 else
661 pr_cont("addr=%u, ", p->match.addr);
662 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name);
663}
664
f16f77b0
HV		 665static void v4l_print_dbg_register(const void *arg, bool write_only)
666{
667 const struct v4l2_dbg_register *p = arg;
668
669 pr_cont("type=%u, ", p->match.type);
3eef2510 670 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
27d5a87c
HV		 671 pr_cont("name=%.*s, ",
672 (int)sizeof(p->match.name), p->match.name);
f16f77b0
HV		 673 else
674 pr_cont("addr=%u, ", p->match.addr);
675 pr_cont("reg=0x%llx, val=0x%llx\n",
676 p->reg, p->val);
677}
678
efc626b0 679static void v4l_print_dv_timings(const void *arg, bool write_only)
5d7758ee 680{
efc626b0
HV		 681 const struct v4l2_dv_timings *p = arg;
682
5d7758ee
HV		 683 switch (p->type) {
684 case V4L2_DV_BT_656_1120:
efc626b0
HV		 685 pr_cont("type=bt-656/1120, interlaced=%u, "
686 "pixelclock=%llu, "
687 "width=%u, height=%u, polarities=0x%x, "
688 "hfrontporch=%u, hsync=%u, "
689 "hbackporch=%u, vfrontporch=%u, "
690 "vsync=%u, vbackporch=%u, "
691 "il_vfrontporch=%u, il_vsync=%u, "
692 "il_vbackporch=%u, standards=0x%x, flags=0x%x\n",
5d7758ee
HV		 693 p->bt.interlaced, p->bt.pixelclock,
694 p->bt.width, p->bt.height,
695 p->bt.polarities, p->bt.hfrontporch,
696 p->bt.hsync, p->bt.hbackporch,
697 p->bt.vfrontporch, p->bt.vsync,
698 p->bt.vbackporch, p->bt.il_vfrontporch,
699 p->bt.il_vsync, p->bt.il_vbackporch,
700 p->bt.standards, p->bt.flags);
701 break;
702 default:
efc626b0 703 pr_cont("type=%d\n", p->type);
5d7758ee
HV		 704 break;
705 }
706}
707
efc626b0
HV		 708static void v4l_print_enum_dv_timings(const void *arg, bool write_only)
709{
710 const struct v4l2_enum_dv_timings *p = arg;
711
712 pr_cont("index=%u, ", p->index);
713 v4l_print_dv_timings(&p->timings, write_only);
714}
715
716static void v4l_print_dv_timings_cap(const void *arg, bool write_only)
717{
718 const struct v4l2_dv_timings_cap *p = arg;
719
720 switch (p->type) {
721 case V4L2_DV_BT_656_1120:
722 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, "
723 "pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
724 p->bt.min_width, p->bt.max_width,
725 p->bt.min_height, p->bt.max_height,
726 p->bt.min_pixelclock, p->bt.max_pixelclock,
727 p->bt.standards, p->bt.capabilities);
728 break;
729 default:
730 pr_cont("type=%u\n", p->type);
731 break;
732 }
733}
734
458aa4a6
HV		 735static void v4l_print_frmsizeenum(const void *arg, bool write_only)
736{
737 const struct v4l2_frmsizeenum *p = arg;
738
739 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u",
740 p->index,
741 (p->pixel_format & 0xff),
742 (p->pixel_format >> 8) & 0xff,
743 (p->pixel_format >> 16) & 0xff,
744 (p->pixel_format >> 24) & 0xff,
745 p->type);
746 switch (p->type) {
747 case V4L2_FRMSIZE_TYPE_DISCRETE:
560dde24 748 pr_cont(", wxh=%ux%u\n",
458aa4a6
HV		 749 p->discrete.width, p->discrete.height);
750 break;
751 case V4L2_FRMSIZE_TYPE_STEPWISE:
560dde24 752 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n",
458aa4a6
HV		 753 p->stepwise.min_width, p->stepwise.min_height,
754 p->stepwise.step_width, p->stepwise.step_height,
755 p->stepwise.max_width, p->stepwise.max_height);
756 break;
757 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
758 /* fall through */
759 default:
760 pr_cont("\n");
761 break;
762 }
763}
764
765static void v4l_print_frmivalenum(const void *arg, bool write_only)
766{
767 const struct v4l2_frmivalenum *p = arg;
768
769 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u",
770 p->index,
771 (p->pixel_format & 0xff),
772 (p->pixel_format >> 8) & 0xff,
773 (p->pixel_format >> 16) & 0xff,
774 (p->pixel_format >> 24) & 0xff,
775 p->width, p->height, p->type);
776 switch (p->type) {
777 case V4L2_FRMIVAL_TYPE_DISCRETE:
560dde24 778 pr_cont(", fps=%d/%d\n",
458aa4a6
HV		 779 p->discrete.numerator,
780 p->discrete.denominator);
781 break;
782 case V4L2_FRMIVAL_TYPE_STEPWISE:
560dde24 783 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n",
458aa4a6
HV		 784 p->stepwise.min.numerator,
785 p->stepwise.min.denominator,
786 p->stepwise.max.numerator,
787 p->stepwise.max.denominator,
788 p->stepwise.step.numerator,
789 p->stepwise.step.denominator);
790 break;
791 case V4L2_FRMIVAL_TYPE_CONTINUOUS:
792 /* fall through */
793 default:
794 pr_cont("\n");
795 break;
796 }
797}
798
799static void v4l_print_event(const void *arg, bool write_only)
800{
801 const struct v4l2_event *p = arg;
802 const struct v4l2_event_ctrl *c;
803
804 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, "
805 "timestamp=%lu.%9.9lu\n",
806 p->type, p->pending, p->sequence, p->id,
807 p->timestamp.tv_sec, p->timestamp.tv_nsec);
808 switch (p->type) {
809 case V4L2_EVENT_VSYNC:
810 printk(KERN_DEBUG "field=%s\n",
811 prt_names(p->u.vsync.field, v4l2_field_names));
812 break;
813 case V4L2_EVENT_CTRL:
814 c = &p->u.ctrl;
815 printk(KERN_DEBUG "changes=0x%x, type=%u, ",
816 c->changes, c->type);
817 if (c->type == V4L2_CTRL_TYPE_INTEGER64)
818 pr_cont("value64=%lld, ", c->value64);
819 else
820 pr_cont("value=%d, ", c->value);
560dde24
HV		 821 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, "
822 "default_value=%d\n",
458aa4a6
HV		 823 c->flags, c->minimum, c->maximum,
824 c->step, c->default_value);
825 break;
826 case V4L2_EVENT_FRAME_SYNC:
827 pr_cont("frame_sequence=%u\n",
828 p->u.frame_sync.frame_sequence);
829 break;
830 }
831}
832
833static void v4l_print_event_subscription(const void *arg, bool write_only)
834{
835 const struct v4l2_event_subscription *p = arg;
836
837 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
838 p->type, p->id, p->flags);
839}
840
841static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only)
842{
843 const struct v4l2_sliced_vbi_cap *p = arg;
844 int i;
845
846 pr_cont("type=%s, service_set=0x%08x\n",
847 prt_names(p->type, v4l2_type_names), p->service_set);
848 for (i = 0; i < 24; i++)
849 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
850 p->service_lines[0][i],
851 p->service_lines[1][i]);
852}
853
82b655bf
HV		 854static void v4l_print_freq_band(const void *arg, bool write_only)
855{
856 const struct v4l2_frequency_band *p = arg;
857
858 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, "
560dde24 859 "rangelow=%u, rangehigh=%u, modulation=0x%x\n",
82b655bf
HV		 860 p->tuner, p->type, p->index,
861 p->capability, p->rangelow,
862 p->rangehigh, p->modulation);
863}
864
dd519bb3
HV		 865static void v4l_print_edid(const void *arg, bool write_only)
866{
867 const struct v4l2_edid *p = arg;
868
869 pr_cont("pad=%u, start_block=%u, blocks=%u\n",
870 p->pad, p->start_block, p->blocks);
871}
872
efc626b0
HV		 873static void v4l_print_u32(const void *arg, bool write_only)
874{
875 pr_cont("value=%u\n", *(const u32 *)arg);
876}
877
878static void v4l_print_newline(const void *arg, bool write_only)
879{
880 pr_cont("\n");
881}
882
f18d8e07
HV		 883static void v4l_print_default(const void *arg, bool write_only)
884{
885 pr_cont("driver-specific ioctl\n");
886}
887
efbceecd 888static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
35ea11ff
HV		 889{
890 __u32 i;
891
892 /* zero the reserved fields */
893 c->reserved[0] = c->reserved[1] = 0;
6b5a9492 894 for (i = 0; i < c->count; i++)
35ea11ff 895 c->controls[i].reserved2[0] = 0;
6b5a9492 896
35ea11ff
HV		 897 /* V4L2_CID_PRIVATE_BASE cannot be used as control class
898 when using extended controls.
899 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
900 is it allowed for backwards compatibility.
901 */
902 if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE)
903 return 0;
904 /* Check that all controls are from the same control class. */
905 for (i = 0; i < c->count; i++) {
906 if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) {
907 c->error_idx = i;
908 return 0;
909 }
910 }
911 return 1;
912}
913
4b20259f 914static int check_fmt(struct file *file, enum v4l2_buf_type type)
35ea11ff 915{
4b20259f
HV		 916 struct video_device *vfd = video_devdata(file);
917 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
918 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
919 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI;
582c52cb 920 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
4b20259f
HV		 921 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
922 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
923
a399810c
HV		 924 if (ops == NULL)
925 return -EINVAL;
926
35ea11ff
HV		 927 switch (type) {
928 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f
HV		 929 if (is_vid && is_rx &&
930 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane))
d14e6d76
PO		 931 return 0;
932 break;
933 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 934 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_cap_mplane)
35ea11ff
HV		 935 return 0;
936 break;
937 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 938 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay)
35ea11ff
HV		 939 return 0;
940 break;
941 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f
HV		 942 if (is_vid && is_tx &&
943 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane))
d14e6d76
PO		 944 return 0;
945 break;
946 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 947 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane)
35ea11ff
HV		 948 return 0;
949 break;
950 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 951 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay)
35ea11ff
HV		 952 return 0;
953 break;
954 case V4L2_BUF_TYPE_VBI_CAPTURE:
4b20259f 955 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap)
35ea11ff
HV		 956 return 0;
957 break;
958 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 959 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out)
35ea11ff
HV		 960 return 0;
961 break;
962 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
4b20259f 963 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap)
35ea11ff
HV		 964 return 0;
965 break;
966 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 967 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out)
35ea11ff
HV		 968 return 0;
969 break;
582c52cb
AP		 970 case V4L2_BUF_TYPE_SDR_CAPTURE:
971 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap)
972 return 0;
973 break;
633c98e5 974 default:
35ea11ff
HV		 975 break;
976 }
977 return -EINVAL;
978}
979
d52e2381
LP		 980static void v4l_sanitize_format(struct v4l2_format *fmt)
981{
982 unsigned int offset;
983
984 /*
985 * The v4l2_pix_format structure has been extended with fields that were
986 * not previously required to be set to zero by applications. The priv
987 * field, when set to a magic value, indicates the the extended fields
988 * are valid. Otherwise they will contain undefined values. To simplify
989 * the API towards drivers zero the extended fields and set the priv
990 * field to the magic value when the extended pixel format structure
991 * isn't used by applications.
992 */
993
994 if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
995 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
996 return;
997
998 if (fmt->fmt.pix.priv == V4L2_PIX_FMT_PRIV_MAGIC)
999 return;
1000
1001 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1002
1003 offset = offsetof(struct v4l2_pix_format, priv)
1004 + sizeof(fmt->fmt.pix.priv);
1005 memset(((void *)&fmt->fmt.pix) + offset, 0,
1006 sizeof(fmt->fmt.pix) - offset);
1007}
1008
59076122
HV		 1009static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
1010 struct file *file, void *fh, void *arg)
1011{
1012 struct v4l2_capability *cap = (struct v4l2_capability *)arg;
d52e2381 1013 int ret;
59076122
HV		 1014
1015 cap->version = LINUX_VERSION_CODE;
d52e2381
LP		 1016
1017 ret = ops->vidioc_querycap(file, fh, cap);
1018
1019 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT;
454a4e72
HV		 1020 /*
1021 * Drivers MUST fill in device_caps, so check for this and
1022 * warn if it was forgotten.
1023 */
1024 WARN_ON(!(cap->capabilities & V4L2_CAP_DEVICE_CAPS) ||
1025 !cap->device_caps);
796a2bd2 1026 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT;
d52e2381
LP		 1027
1028 return ret;
59076122
HV		 1029}
1030
1031static int v4l_s_input(const struct v4l2_ioctl_ops *ops,
1032 struct file *file, void *fh, void *arg)
1033{
1034 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg);
1035}
1036
1037static int v4l_s_output(const struct v4l2_ioctl_ops *ops,
1038 struct file *file, void *fh, void *arg)
1039{
1040 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg);
1041}
1042
d0547cba
HV		 1043static int v4l_g_priority(const struct v4l2_ioctl_ops *ops,
1044 struct file *file, void *fh, void *arg)
1045{
1046 struct video_device *vfd;
1047 u32 *p = arg;
1048
d0547cba 1049 vfd = video_devdata(file);
59b702ea 1050 *p = v4l2_prio_max(vfd->prio);
d0547cba
HV		 1051 return 0;
1052}
1053
1054static int v4l_s_priority(const struct v4l2_ioctl_ops *ops,
1055 struct file *file, void *fh, void *arg)
1056{
1057 struct video_device *vfd;
1058 struct v4l2_fh *vfh;
1059 u32 *p = arg;
1060
d0547cba 1061 vfd = video_devdata(file);
2438e78a
HV		 1062 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
1063 return -ENOTTY;
d0547cba 1064 vfh = file->private_data;
59b702ea 1065 return v4l2_prio_change(vfd->prio, &vfh->prio, *p);
d0547cba
HV		 1066}
1067
59076122
HV		 1068static int v4l_enuminput(const struct v4l2_ioctl_ops *ops,
1069 struct file *file, void *fh, void *arg)
1070{
73f35418 1071 struct video_device *vfd = video_devdata(file);
59076122
HV		 1072 struct v4l2_input *p = arg;
1073
1074 /*
02fa6282 1075 * We set the flags for CAP_DV_TIMINGS &
59076122
HV		 1076 * CAP_STD here based on ioctl handler provided by the
1077 * driver. If the driver doesn't support these
1078 * for a specific input, it must override these flags.
1079 */
73f35418 1080 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
59076122 1081 p->capabilities |= V4L2_IN_CAP_STD;
59076122
HV		 1082
1083 return ops->vidioc_enum_input(file, fh, p);
1084}
1085
1086static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops,
1087 struct file *file, void *fh, void *arg)
1088{
73f35418 1089 struct video_device *vfd = video_devdata(file);
59076122
HV		 1090 struct v4l2_output *p = arg;
1091
1092 /*
02fa6282 1093 * We set the flags for CAP_DV_TIMINGS &
59076122
HV		 1094 * CAP_STD here based on ioctl handler provided by the
1095 * driver. If the driver doesn't support these
1096 * for a specific output, it must override these flags.
1097 */
73f35418 1098 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
59076122 1099 p->capabilities |= V4L2_OUT_CAP_STD;
59076122
HV		 1100
1101 return ops->vidioc_enum_output(file, fh, p);
1102}
1103
be6c64e4
HV		 1104static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
1105 struct file *file, void *fh, void *arg)
1106{
1107 struct v4l2_fmtdesc *p = arg;
4b20259f 1108 struct video_device *vfd = video_devdata(file);
ce71bbc9
HV		 1109 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1110 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
4b20259f
HV		 1111 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1112 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
be6c64e4
HV		 1113
1114 switch (p->type) {
1115 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
ce71bbc9 1116 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_cap))
be6c64e4
HV		 1117 break;
1118 return ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
1119 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
ce71bbc9 1120 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_cap_mplane))
be6c64e4
HV		 1121 break;
1122 return ops->vidioc_enum_fmt_vid_cap_mplane(file, fh, arg);
1123 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
ce71bbc9 1124 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_overlay))
be6c64e4
HV		 1125 break;
1126 return ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
1127 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
ce71bbc9 1128 if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out))
be6c64e4
HV		 1129 break;
1130 return ops->vidioc_enum_fmt_vid_out(file, fh, arg);
1131 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
ce71bbc9 1132 if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out_mplane))
be6c64e4
HV		 1133 break;
1134 return ops->vidioc_enum_fmt_vid_out_mplane(file, fh, arg);
582c52cb 1135 case V4L2_BUF_TYPE_SDR_CAPTURE:
ce71bbc9 1136 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_enum_fmt_sdr_cap))
582c52cb
AP		 1137 break;
1138 return ops->vidioc_enum_fmt_sdr_cap(file, fh, arg);
be6c64e4
HV		 1139 }
1140 return -EINVAL;
1141}
1142
1143static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
1144 struct file *file, void *fh, void *arg)
1145{
1146 struct v4l2_format *p = arg;
4b20259f
HV		 1147 struct video_device *vfd = video_devdata(file);
1148 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
582c52cb 1149 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
4b20259f
HV		 1150 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1151 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
d52e2381
LP		 1152 int ret;
1153
e5ce558a
HV		 1154 /*
1155 * fmt can't be cleared for these overlay types due to the 'clips'
1156 * 'clipcount' and 'bitmap' pointers in struct v4l2_window.
1157 * Those are provided by the user. So handle these two overlay types
1158 * first, and then just do a simple memset for the other types.
1159 */
1160 switch (p->type) {
1161 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1162 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: {
4d1afa51 1163 struct v4l2_clip __user *clips = p->fmt.win.clips;
e5ce558a 1164 u32 clipcount = p->fmt.win.clipcount;
4d1afa51 1165 void __user *bitmap = p->fmt.win.bitmap;
e5ce558a
HV		 1166
1167 memset(&p->fmt, 0, sizeof(p->fmt));
1168 p->fmt.win.clips = clips;
1169 p->fmt.win.clipcount = clipcount;
1170 p->fmt.win.bitmap = bitmap;
1171 break;
1172 }
1173 default:
1174 memset(&p->fmt, 0, sizeof(p->fmt));
1175 break;
1176 }
1177
be6c64e4
HV		 1178 switch (p->type) {
1179 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1180 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap))
be6c64e4 1181 break;
48f2650a 1182 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
d52e2381 1183 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg);
48f2650a 1184 /* just in case the driver zeroed it again */
d52e2381
LP		 1185 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1186 return ret;
be6c64e4 1187 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1188 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap_mplane))
be6c64e4
HV		 1189 break;
1190 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
1191 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1192 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_overlay))
be6c64e4
HV		 1193 break;
1194 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
4b20259f
HV		 1195 case V4L2_BUF_TYPE_VBI_CAPTURE:
1196 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_vbi_cap))
1197 break;
1198 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
1199 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1200 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_cap))
1201 break;
1202 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1203 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1204 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out))
be6c64e4 1205 break;
48f2650a 1206 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
d52e2381 1207 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg);
48f2650a 1208 /* just in case the driver zeroed it again */
d52e2381
LP		 1209 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1210 return ret;
be6c64e4 1211 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1212 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_mplane))
be6c64e4
HV		 1213 break;
1214 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
1215 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 1216 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_overlay))
be6c64e4
HV		 1217 break;
1218 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1219 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 1220 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_vbi_out))
be6c64e4
HV		 1221 break;
1222 return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
be6c64e4 1223 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 1224 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_out))
be6c64e4
HV		 1225 break;
1226 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
582c52cb
AP		 1227 case V4L2_BUF_TYPE_SDR_CAPTURE:
1228 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_g_fmt_sdr_cap))
1229 break;
1230 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg);
be6c64e4
HV		 1231 }
1232 return -EINVAL;
1233}
1234
1235static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
1236 struct file *file, void *fh, void *arg)
1237{
1238 struct v4l2_format *p = arg;
4b20259f
HV		 1239 struct video_device *vfd = video_devdata(file);
1240 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
582c52cb 1241 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
4b20259f
HV		 1242 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1243 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
48f2650a 1244 int ret;
be6c64e4 1245
d52e2381
LP		 1246 v4l_sanitize_format(p);
1247
be6c64e4
HV		 1248 switch (p->type) {
1249 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1250 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap))
be6c64e4
HV		 1251 break;
1252 CLEAR_AFTER_FIELD(p, fmt.pix);
48f2650a
HV		 1253 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg);
1254 /* just in case the driver zeroed it again */
1255 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1256 return ret;
be6c64e4 1257 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1258 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap_mplane))
be6c64e4
HV		 1259 break;
1260 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1261 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
1262 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1263 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_overlay))
be6c64e4
HV		 1264 break;
1265 CLEAR_AFTER_FIELD(p, fmt.win);
1266 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
4b20259f
HV		 1267 case V4L2_BUF_TYPE_VBI_CAPTURE:
1268 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_vbi_cap))
1269 break;
1270 CLEAR_AFTER_FIELD(p, fmt.vbi);
1271 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
1272 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1273 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_cap))
1274 break;
1275 CLEAR_AFTER_FIELD(p, fmt.sliced);
1276 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1277 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1278 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out))
be6c64e4
HV		 1279 break;
1280 CLEAR_AFTER_FIELD(p, fmt.pix);
48f2650a
HV		 1281 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg);
1282 /* just in case the driver zeroed it again */
1283 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1284 return ret;
be6c64e4 1285 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1286 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_mplane))
be6c64e4
HV		 1287 break;
1288 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1289 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
1290 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 1291 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_overlay))
be6c64e4
HV		 1292 break;
1293 CLEAR_AFTER_FIELD(p, fmt.win);
1294 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1295 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 1296 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_vbi_out))
be6c64e4
HV		 1297 break;
1298 CLEAR_AFTER_FIELD(p, fmt.vbi);
1299 return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
be6c64e4 1300 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 1301 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_out))
be6c64e4
HV		 1302 break;
1303 CLEAR_AFTER_FIELD(p, fmt.sliced);
1304 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
582c52cb
AP		 1305 case V4L2_BUF_TYPE_SDR_CAPTURE:
1306 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_s_fmt_sdr_cap))
1307 break;
1308 CLEAR_AFTER_FIELD(p, fmt.sdr);
1309 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg);
be6c64e4
HV		 1310 }
1311 return -EINVAL;
1312}
1313
1314static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
1315 struct file *file, void *fh, void *arg)
1316{
1317 struct v4l2_format *p = arg;
4b20259f
HV		 1318 struct video_device *vfd = video_devdata(file);
1319 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
582c52cb 1320 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
4b20259f
HV		 1321 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1322 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
48f2650a 1323 int ret;
be6c64e4 1324
d52e2381
LP		 1325 v4l_sanitize_format(p);
1326
be6c64e4
HV		 1327 switch (p->type) {
1328 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1329 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap))
be6c64e4
HV		 1330 break;
1331 CLEAR_AFTER_FIELD(p, fmt.pix);
48f2650a
HV		 1332 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg);
1333 /* just in case the driver zeroed it again */
1334 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1335 return ret;
be6c64e4 1336 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1337 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap_mplane))
be6c64e4
HV		 1338 break;
1339 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1340 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
1341 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1342 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_overlay))
be6c64e4
HV		 1343 break;
1344 CLEAR_AFTER_FIELD(p, fmt.win);
1345 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
4b20259f
HV		 1346 case V4L2_BUF_TYPE_VBI_CAPTURE:
1347 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_vbi_cap))
1348 break;
1349 CLEAR_AFTER_FIELD(p, fmt.vbi);
1350 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
1351 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1352 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_cap))
1353 break;
1354 CLEAR_AFTER_FIELD(p, fmt.sliced);
1355 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1356 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1357 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out))
be6c64e4
HV		 1358 break;
1359 CLEAR_AFTER_FIELD(p, fmt.pix);
48f2650a
HV		 1360 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg);
1361 /* just in case the driver zeroed it again */
1362 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1363 return ret;
be6c64e4 1364 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1365 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_mplane))
be6c64e4
HV		 1366 break;
1367 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1368 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
1369 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 1370 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_overlay))
be6c64e4
HV		 1371 break;
1372 CLEAR_AFTER_FIELD(p, fmt.win);
1373 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1374 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 1375 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_vbi_out))
be6c64e4
HV		 1376 break;
1377 CLEAR_AFTER_FIELD(p, fmt.vbi);
1378 return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
be6c64e4 1379 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 1380 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_out))
be6c64e4
HV		 1381 break;
1382 CLEAR_AFTER_FIELD(p, fmt.sliced);
1383 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
582c52cb
AP		 1384 case V4L2_BUF_TYPE_SDR_CAPTURE:
1385 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_try_fmt_sdr_cap))
1386 break;
1387 CLEAR_AFTER_FIELD(p, fmt.sdr);
1388 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg);
be6c64e4
HV		 1389 }
1390 return -EINVAL;
1391}
1392
e325b244
HV		 1393static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
1394 struct file *file, void *fh, void *arg)
1395{
1396 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
1397}
1398
1399static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
1400 struct file *file, void *fh, void *arg)
1401{
1402 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
1403}
1404
4b1e2e4d
HV		 1405static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,
1406 struct file *file, void *fh, void *arg)
1407{
1408 struct video_device *vfd = video_devdata(file);
1409 struct v4l2_tuner *p = arg;
82b655bf 1410 int err;
4b1e2e4d
HV		 1411
1412 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1413 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
82b655bf
HV		 1414 err = ops->vidioc_g_tuner(file, fh, p);
1415 if (!err)
1416 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1417 return err;
4b1e2e4d
HV		 1418}
1419
1420static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
1421 struct file *file, void *fh, void *arg)
1422{
1423 struct video_device *vfd = video_devdata(file);
1424 struct v4l2_tuner *p = arg;
1425
1426 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1427 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1428 return ops->vidioc_s_tuner(file, fh, p);
1429}
1430
82b655bf
HV		 1431static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,
1432 struct file *file, void *fh, void *arg)
1433{
1434 struct v4l2_modulator *p = arg;
1435 int err;
1436
1437 err = ops->vidioc_g_modulator(file, fh, p);
1438 if (!err)
1439 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1440 return err;
1441}
1442
4b1e2e4d
HV		 1443static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
1444 struct file *file, void *fh, void *arg)
1445{
1446 struct video_device *vfd = video_devdata(file);
1447 struct v4l2_frequency *p = arg;
1448
84099a28
AP		 1449 if (vfd->vfl_type == VFL_TYPE_SDR)
1450 p->type = V4L2_TUNER_ADC;
1451 else
1452 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1453 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
4b1e2e4d
HV		 1454 return ops->vidioc_g_frequency(file, fh, p);
1455}
1456
1457static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
1458 struct file *file, void *fh, void *arg)
1459{
1460 struct video_device *vfd = video_devdata(file);
b530a447 1461 const struct v4l2_frequency *p = arg;
4b1e2e4d
HV		 1462 enum v4l2_tuner_type type;
1463
84099a28
AP		 1464 if (vfd->vfl_type == VFL_TYPE_SDR) {
1465 if (p->type != V4L2_TUNER_ADC && p->type != V4L2_TUNER_RF)
1466 return -EINVAL;
1467 } else {
1468 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1469 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1470 if (type != p->type)
1471 return -EINVAL;
1472 }
4b1e2e4d
HV		 1473 return ops->vidioc_s_frequency(file, fh, p);
1474}
1475
1476static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
1477 struct file *file, void *fh, void *arg)
1478{
1479 struct video_device *vfd = video_devdata(file);
1480 struct v4l2_standard *p = arg;
1481 v4l2_std_id id = vfd->tvnorms, curr_id = 0;
1482 unsigned int index = p->index, i, j = 0;
1483 const char *descr = "";
1484
a5338190
HV		 1485 /* Return -ENODATA if the tvnorms for the current input
1486 or output is 0, meaning that it doesn't support this API. */
1487 if (id == 0)
1488 return -ENODATA;
1489
4b1e2e4d
HV		 1490 /* Return norm array in a canonical way */
1491 for (i = 0; i <= index && id; i++) {
1492 /* last std value in the standards array is 0, so this
1493 while always ends there since (id & 0) == 0. */
1494 while ((id & standards[j].std) != standards[j].std)
1495 j++;
1496 curr_id = standards[j].std;
1497 descr = standards[j].descr;
1498 j++;
1499 if (curr_id == 0)
1500 break;
1501 if (curr_id != V4L2_STD_PAL &&
1502 curr_id != V4L2_STD_SECAM &&
1503 curr_id != V4L2_STD_NTSC)
1504 id &= ~curr_id;
1505 }
1506 if (i <= index)
1507 return -EINVAL;
1508
1509 v4l2_video_std_construct(p, curr_id, descr);
1510 return 0;
1511}
1512
4b1e2e4d
HV		 1513static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
1514 struct file *file, void *fh, void *arg)
1515{
1516 struct video_device *vfd = video_devdata(file);
314527ac 1517 v4l2_std_id id = *(v4l2_std_id *)arg, norm;
4b1e2e4d 1518
314527ac 1519 norm = id & vfd->tvnorms;
4b1e2e4d
HV		 1520 if (vfd->tvnorms && !norm) /* Check if std is supported */
1521 return -EINVAL;
1522
1523 /* Calls the specific handler */
ca371575 1524 return ops->vidioc_s_std(file, fh, norm);
4b1e2e4d
HV		 1525}
1526
1527static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
1528 struct file *file, void *fh, void *arg)
1529{
1530 struct video_device *vfd = video_devdata(file);
1531 v4l2_std_id *p = arg;
1532
1533 /*
1a2c6866
HV		 1534 * If no signal is detected, then the driver should return
1535 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with
1536 * any standards that do not apply removed.
1537 *
4b1e2e4d
HV		 1538 * This means that tuners, audio and video decoders can join
1539 * their efforts to improve the standards detection.
1540 */
1541 *p = vfd->tvnorms;
1542 return ops->vidioc_querystd(file, fh, arg);
1543}
1544
1545static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
1546 struct file *file, void *fh, void *arg)
1547{
1548 struct video_device *vfd = video_devdata(file);
1549 struct v4l2_hw_freq_seek *p = arg;
1550 enum v4l2_tuner_type type;
1551
84099a28
AP		 1552 /* s_hw_freq_seek is not supported for SDR for now */
1553 if (vfd->vfl_type == VFL_TYPE_SDR)
1554 return -EINVAL;
1555
4b1e2e4d
HV		 1556 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1557 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1558 if (p->type != type)
1559 return -EINVAL;
1560 return ops->vidioc_s_hw_freq_seek(file, fh, p);
1561}
1562
737c097b
HV		 1563static int v4l_overlay(const struct v4l2_ioctl_ops *ops,
1564 struct file *file, void *fh, void *arg)
1565{
1566 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg);
1567}
1568
eb3728ed
HV		 1569static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,
1570 struct file *file, void *fh, void *arg)
1571{
1572 struct v4l2_requestbuffers *p = arg;
4b20259f 1573 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1574
1575 if (ret)
1576 return ret;
1577
633c98e5 1578 CLEAR_AFTER_FIELD(p, memory);
eb3728ed
HV		 1579
1580 return ops->vidioc_reqbufs(file, fh, p);
1581}
1582
1583static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,
1584 struct file *file, void *fh, void *arg)
1585{
1586 struct v4l2_buffer *p = arg;
4b20259f 1587 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1588
1589 return ret ? ret : ops->vidioc_querybuf(file, fh, p);
1590}
1591
1592static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,
1593 struct file *file, void *fh, void *arg)
1594{
1595 struct v4l2_buffer *p = arg;
4b20259f 1596 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1597
1598 return ret ? ret : ops->vidioc_qbuf(file, fh, p);
1599}
1600
1601static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,
1602 struct file *file, void *fh, void *arg)
1603{
1604 struct v4l2_buffer *p = arg;
4b20259f 1605 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1606
1607 return ret ? ret : ops->vidioc_dqbuf(file, fh, p);
1608}
1609
1610static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
1611 struct file *file, void *fh, void *arg)
1612{
1613 struct v4l2_create_buffers *create = arg;
4b20259f 1614 int ret = check_fmt(file, create->format.type);
eb3728ed 1615
d52e2381
LP		 1616 if (ret)
1617 return ret;
1618
1619 v4l_sanitize_format(&create->format);
1620
1621 ret = ops->vidioc_create_bufs(file, fh, create);
1622
1623 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1624 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1625 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1626
1627 return ret;
eb3728ed
HV		 1628}
1629
1630static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
1631 struct file *file, void *fh, void *arg)
1632{
1633 struct v4l2_buffer *b = arg;
4b20259f 1634 int ret = check_fmt(file, b->type);
eb3728ed
HV		 1635
1636 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
1637}
1638
1639static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
1640 struct file *file, void *fh, void *arg)
1641{
eb3728ed
HV		 1642 struct v4l2_streamparm *p = arg;
1643 v4l2_std_id std;
4b20259f 1644 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1645
1646 if (ret)
1647 return ret;
1648 if (ops->vidioc_g_parm)
1649 return ops->vidioc_g_parm(file, fh, p);
eb3728ed
HV		 1650 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1651 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1652 return -EINVAL;
1653 p->parm.capture.readbuffers = 2;
ca371575 1654 ret = ops->vidioc_g_std(file, fh, &std);
eb3728ed 1655 if (ret == 0)
ca371575 1656 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe);
eb3728ed
HV		 1657 return ret;
1658}
1659
1660static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
1661 struct file *file, void *fh, void *arg)
1662{
1663 struct v4l2_streamparm *p = arg;
4b20259f 1664 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1665
1666 return ret ? ret : ops->vidioc_s_parm(file, fh, p);
1667}
1668
efbceecd
HV		 1669static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,
1670 struct file *file, void *fh, void *arg)
1671{
1672 struct video_device *vfd = video_devdata(file);
1673 struct v4l2_queryctrl *p = arg;
7a3ed2d9
HV		 1674 struct v4l2_fh *vfh =
1675 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1676
1677 if (vfh && vfh->ctrl_handler)
1678 return v4l2_queryctrl(vfh->ctrl_handler, p);
1679 if (vfd->ctrl_handler)
1680 return v4l2_queryctrl(vfd->ctrl_handler, p);
1681 if (ops->vidioc_queryctrl)
1682 return ops->vidioc_queryctrl(file, fh, p);
1683 return -ENOTTY;
1684}
1685
e6bee368
HV		 1686static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops,
1687 struct file *file, void *fh, void *arg)
1688{
1689 struct video_device *vfd = video_devdata(file);
1690 struct v4l2_query_ext_ctrl *p = arg;
1691 struct v4l2_fh *vfh =
1692 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1693
1694 if (vfh && vfh->ctrl_handler)
1695 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p);
1696 if (vfd->ctrl_handler)
1697 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p);
1698 if (ops->vidioc_query_ext_ctrl)
1699 return ops->vidioc_query_ext_ctrl(file, fh, p);
1700 return -ENOTTY;
1701}
1702
efbceecd
HV		 1703static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,
1704 struct file *file, void *fh, void *arg)
1705{
1706 struct video_device *vfd = video_devdata(file);
1707 struct v4l2_querymenu *p = arg;
7a3ed2d9
HV		 1708 struct v4l2_fh *vfh =
1709 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1710
1711 if (vfh && vfh->ctrl_handler)
1712 return v4l2_querymenu(vfh->ctrl_handler, p);
1713 if (vfd->ctrl_handler)
1714 return v4l2_querymenu(vfd->ctrl_handler, p);
1715 if (ops->vidioc_querymenu)
1716 return ops->vidioc_querymenu(file, fh, p);
1717 return -ENOTTY;
1718}
1719
1720static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops,
1721 struct file *file, void *fh, void *arg)
1722{
1723 struct video_device *vfd = video_devdata(file);
1724 struct v4l2_control *p = arg;
7a3ed2d9
HV		 1725 struct v4l2_fh *vfh =
1726 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1727 struct v4l2_ext_controls ctrls;
1728 struct v4l2_ext_control ctrl;
1729
1730 if (vfh && vfh->ctrl_handler)
1731 return v4l2_g_ctrl(vfh->ctrl_handler, p);
1732 if (vfd->ctrl_handler)
1733 return v4l2_g_ctrl(vfd->ctrl_handler, p);
1734 if (ops->vidioc_g_ctrl)
1735 return ops->vidioc_g_ctrl(file, fh, p);
1736 if (ops->vidioc_g_ext_ctrls == NULL)
1737 return -ENOTTY;
1738
1739 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1740 ctrls.count = 1;
1741 ctrls.controls = &ctrl;
1742 ctrl.id = p->id;
1743 ctrl.value = p->value;
1744 if (check_ext_ctrls(&ctrls, 1)) {
1745 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
1746
1747 if (ret == 0)
1748 p->value = ctrl.value;
1749 return ret;
1750 }
1751 return -EINVAL;
1752}
1753
1754static int v4l_s_ctrl(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_control *p = arg;
7a3ed2d9
HV		 1759 struct v4l2_fh *vfh =
1760 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1761 struct v4l2_ext_controls ctrls;
1762 struct v4l2_ext_control ctrl;
1763
1764 if (vfh && vfh->ctrl_handler)
1765 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
1766 if (vfd->ctrl_handler)
1767 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
1768 if (ops->vidioc_s_ctrl)
1769 return ops->vidioc_s_ctrl(file, fh, p);
1770 if (ops->vidioc_s_ext_ctrls == NULL)
1771 return -ENOTTY;
1772
1773 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1774 ctrls.count = 1;
1775 ctrls.controls = &ctrl;
1776 ctrl.id = p->id;
1777 ctrl.value = p->value;
1778 if (check_ext_ctrls(&ctrls, 1))
1779 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
1780 return -EINVAL;
1781}
1782
1783static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1784 struct file *file, void *fh, void *arg)
1785{
1786 struct video_device *vfd = video_devdata(file);
1787 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 1788 struct v4l2_fh *vfh =
1789 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1790
1791 p->error_idx = p->count;
1792 if (vfh && vfh->ctrl_handler)
1793 return v4l2_g_ext_ctrls(vfh->ctrl_handler, p);
1794 if (vfd->ctrl_handler)
1795 return v4l2_g_ext_ctrls(vfd->ctrl_handler, p);
1796 if (ops->vidioc_g_ext_ctrls == NULL)
1797 return -ENOTTY;
1798 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :
1799 -EINVAL;
1800}
1801
1802static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1803 struct file *file, void *fh, void *arg)
1804{
1805 struct video_device *vfd = video_devdata(file);
1806 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 1807 struct v4l2_fh *vfh =
1808 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1809
1810 p->error_idx = p->count;
1811 if (vfh && vfh->ctrl_handler)
1812 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, p);
1813 if (vfd->ctrl_handler)
1814 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, p);
1815 if (ops->vidioc_s_ext_ctrls == NULL)
1816 return -ENOTTY;
1817 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :
1818 -EINVAL;
1819}
1820
1821static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1822 struct file *file, void *fh, void *arg)
1823{
1824 struct video_device *vfd = video_devdata(file);
1825 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 1826 struct v4l2_fh *vfh =
1827 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1828
1829 p->error_idx = p->count;
1830 if (vfh && vfh->ctrl_handler)
1831 return v4l2_try_ext_ctrls(vfh->ctrl_handler, p);
1832 if (vfd->ctrl_handler)
1833 return v4l2_try_ext_ctrls(vfd->ctrl_handler, p);
1834 if (ops->vidioc_try_ext_ctrls == NULL)
1835 return -ENOTTY;
1836 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :
1837 -EINVAL;
1838}
1839
d84f2d94
HV		 1840static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
1841 struct file *file, void *fh, void *arg)
1842{
1843 struct v4l2_crop *p = arg;
1844 struct v4l2_selection s = {
1845 .type = p->type,
1846 };
1847 int ret;
1848
1849 if (ops->vidioc_g_crop)
1850 return ops->vidioc_g_crop(file, fh, p);
1851 /* simulate capture crop using selection api */
1852
1853 /* crop means compose for output devices */
1854 if (V4L2_TYPE_IS_OUTPUT(p->type))
1855 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
1856 else
1857 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
1858
1859 ret = ops->vidioc_g_selection(file, fh, &s);
1860
1861 /* copying results to old structure on success */
1862 if (!ret)
1863 p->c = s.r;
1864 return ret;
1865}
1866
1867static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
1868 struct file *file, void *fh, void *arg)
1869{
1870 struct v4l2_crop *p = arg;
1871 struct v4l2_selection s = {
1872 .type = p->type,
1873 .r = p->c,
1874 };
1875
1876 if (ops->vidioc_s_crop)
1877 return ops->vidioc_s_crop(file, fh, p);
1878 /* simulate capture crop using selection api */
1879
1880 /* crop means compose for output devices */
1881 if (V4L2_TYPE_IS_OUTPUT(p->type))
1882 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
1883 else
1884 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
1885
1886 return ops->vidioc_s_selection(file, fh, &s);
1887}
1888
1889static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
1890 struct file *file, void *fh, void *arg)
1891{
1892 struct v4l2_cropcap *p = arg;
d84f2d94 1893
9409945c
HV		 1894 if (ops->vidioc_g_selection) {
1895 struct v4l2_selection s = { .type = p->type };
1896 int ret;
d84f2d94 1897
9409945c
HV		 1898 /* obtaining bounds */
1899 if (V4L2_TYPE_IS_OUTPUT(p->type))
1900 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
1901 else
1902 s.target = V4L2_SEL_TGT_CROP_BOUNDS;
d84f2d94 1903
9409945c
HV		 1904 ret = ops->vidioc_g_selection(file, fh, &s);
1905 if (ret)
1906 return ret;
1907 p->bounds = s.r;
d84f2d94 1908
9409945c
HV		 1909 /* obtaining defrect */
1910 if (V4L2_TYPE_IS_OUTPUT(p->type))
1911 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
1912 else
1913 s.target = V4L2_SEL_TGT_CROP_DEFAULT;
d84f2d94 1914
9409945c
HV		 1915 ret = ops->vidioc_g_selection(file, fh, &s);
1916 if (ret)
1917 return ret;
1918 p->defrect = s.r;
1919 }
d84f2d94
HV		 1920
1921 /* setting trivial pixelaspect */
1922 p->pixelaspect.numerator = 1;
1923 p->pixelaspect.denominator = 1;
9409945c
HV		 1924
1925 if (ops->vidioc_cropcap)
1926 return ops->vidioc_cropcap(file, fh, p);
1927
d84f2d94
HV		 1928 return 0;
1929}
1930
f16f77b0
HV		 1931static int v4l_log_status(const struct v4l2_ioctl_ops *ops,
1932 struct file *file, void *fh, void *arg)
1933{
1934 struct video_device *vfd = video_devdata(file);
1935 int ret;
1936
1937 if (vfd->v4l2_dev)
1938 pr_info("%s: ================= START STATUS =================\n",
1939 vfd->v4l2_dev->name);
1940 ret = ops->vidioc_log_status(file, fh);
1941 if (vfd->v4l2_dev)
1942 pr_info("%s: ================== END STATUS ==================\n",
1943 vfd->v4l2_dev->name);
1944 return ret;
1945}
1946
1947static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
1948 struct file *file, void *fh, void *arg)
1949{
1950#ifdef CONFIG_VIDEO_ADV_DEBUG
1951 struct v4l2_dbg_register *p = arg;
79b0c640
HV		 1952 struct video_device *vfd = video_devdata(file);
1953 struct v4l2_subdev *sd;
1954 int idx = 0;
f16f77b0
HV		 1955
1956 if (!capable(CAP_SYS_ADMIN))
1957 return -EPERM;
3eef2510 1958 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
79b0c640
HV		 1959 if (vfd->v4l2_dev == NULL)
1960 return -EINVAL;
3eef2510
HV		 1961 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
1962 if (p->match.addr == idx++)
79b0c640 1963 return v4l2_subdev_call(sd, core, g_register, p);
79b0c640
HV		 1964 return -EINVAL;
1965 }
191b79b0
HV		 1966 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
1967 (ops->vidioc_g_chip_info || p->match.addr == 0))
79b0c640
HV		 1968 return ops->vidioc_g_register(file, fh, p);
1969 return -EINVAL;
f16f77b0
HV		 1970#else
1971 return -ENOTTY;
1972#endif
1973}
1974
1975static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
1976 struct file *file, void *fh, void *arg)
1977{
1978#ifdef CONFIG_VIDEO_ADV_DEBUG
977ba3b1 1979 const struct v4l2_dbg_register *p = arg;
79b0c640
HV		 1980 struct video_device *vfd = video_devdata(file);
1981 struct v4l2_subdev *sd;
1982 int idx = 0;
f16f77b0
HV		 1983
1984 if (!capable(CAP_SYS_ADMIN))
1985 return -EPERM;
3eef2510 1986 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
79b0c640
HV		 1987 if (vfd->v4l2_dev == NULL)
1988 return -EINVAL;
3eef2510
HV		 1989 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
1990 if (p->match.addr == idx++)
79b0c640 1991 return v4l2_subdev_call(sd, core, s_register, p);
79b0c640
HV		 1992 return -EINVAL;
1993 }
191b79b0
HV		 1994 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
1995 (ops->vidioc_g_chip_info || p->match.addr == 0))
79b0c640
HV		 1996 return ops->vidioc_s_register(file, fh, p);
1997 return -EINVAL;
f16f77b0
HV		 1998#else
1999 return -ENOTTY;
2000#endif
2001}
2002
96b03d2a 2003static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,
79b0c640
HV		 2004 struct file *file, void *fh, void *arg)
2005{
cd634f1b 2006#ifdef CONFIG_VIDEO_ADV_DEBUG
79b0c640 2007 struct video_device *vfd = video_devdata(file);
96b03d2a 2008 struct v4l2_dbg_chip_info *p = arg;
79b0c640
HV		 2009 struct v4l2_subdev *sd;
2010 int idx = 0;
2011
2012 switch (p->match.type) {
2013 case V4L2_CHIP_MATCH_BRIDGE:
79b0c640
HV		 2014 if (ops->vidioc_s_register)
2015 p->flags |= V4L2_CHIP_FL_WRITABLE;
2016 if (ops->vidioc_g_register)
2017 p->flags |= V4L2_CHIP_FL_READABLE;
1c1d86a1 2018 strlcpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));
96b03d2a
HV		 2019 if (ops->vidioc_g_chip_info)
2020 return ops->vidioc_g_chip_info(file, fh, arg);
0f0fe4b9
HV		 2021 if (p->match.addr)
2022 return -EINVAL;
79b0c640
HV		 2023 return 0;
2024
3eef2510 2025 case V4L2_CHIP_MATCH_SUBDEV:
79b0c640
HV		 2026 if (vfd->v4l2_dev == NULL)
2027 break;
2028 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {
3eef2510
HV		 2029 if (p->match.addr != idx++)
2030 continue;
2031 if (sd->ops->core && sd->ops->core->s_register)
2032 p->flags |= V4L2_CHIP_FL_WRITABLE;
2033 if (sd->ops->core && sd->ops->core->g_register)
2034 p->flags |= V4L2_CHIP_FL_READABLE;
2035 strlcpy(p->name, sd->name, sizeof(p->name));
2036 return 0;
79b0c640
HV		 2037 }
2038 break;
2039 }
2040 return -EINVAL;
cd634f1b
HV		 2041#else
2042 return -ENOTTY;
2043#endif
79b0c640
HV		 2044}
2045
458aa4a6
HV		 2046static int v4l_dqevent(const struct v4l2_ioctl_ops *ops,
2047 struct file *file, void *fh, void *arg)
2048{
2049 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK);
2050}
2051
2052static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,
2053 struct file *file, void *fh, void *arg)
2054{
2055 return ops->vidioc_subscribe_event(fh, arg);
2056}
2057
2058static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,
2059 struct file *file, void *fh, void *arg)
2060{
2061 return ops->vidioc_unsubscribe_event(fh, arg);
2062}
2063
2064static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,
2065 struct file *file, void *fh, void *arg)
2066{
2067 struct v4l2_sliced_vbi_cap *p = arg;
4b20259f
HV		 2068 int ret = check_fmt(file, p->type);
2069
2070 if (ret)
2071 return ret;
458aa4a6
HV		 2072
2073 /* Clear up to type, everything after type is zeroed already */
2074 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
2075
2076 return ops->vidioc_g_sliced_vbi_cap(file, fh, p);
2077}
2078
82b655bf
HV		 2079static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
2080 struct file *file, void *fh, void *arg)
2081{
2082 struct video_device *vfd = video_devdata(file);
2083 struct v4l2_frequency_band *p = arg;
2084 enum v4l2_tuner_type type;
2085 int err;
2086
84099a28
AP		 2087 if (vfd->vfl_type == VFL_TYPE_SDR) {
2088 if (p->type != V4L2_TUNER_ADC && p->type != V4L2_TUNER_RF)
2089 return -EINVAL;
2090 type = p->type;
2091 } else {
2092 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2093 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2094 if (type != p->type)
2095 return -EINVAL;
2096 }
a7f404af
HV		 2097 if (ops->vidioc_enum_freq_bands) {
2098 err = ops->vidioc_enum_freq_bands(file, fh, p);
2099 if (err != -ENOTTY)
2100 return err;
2101 }
73f35418 2102 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) {
82b655bf
HV		 2103 struct v4l2_tuner t = {
2104 .index = p->tuner,
2105 .type = type,
2106 };
2107
aa4d9b53
HV		 2108 if (p->index)
2109 return -EINVAL;
82b655bf
HV		 2110 err = ops->vidioc_g_tuner(file, fh, &t);
2111 if (err)
2112 return err;
2113 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2114 p->rangelow = t.rangelow;
2115 p->rangehigh = t.rangehigh;
2116 p->modulation = (type == V4L2_TUNER_RADIO) ?
2117 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2118 return 0;
2119 }
73f35418 2120 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) {
82b655bf
HV		 2121 struct v4l2_modulator m = {
2122 .index = p->tuner,
2123 };
2124
2125 if (type != V4L2_TUNER_RADIO)
2126 return -EINVAL;
aa4d9b53
HV		 2127 if (p->index)
2128 return -EINVAL;
82b655bf
HV		 2129 err = ops->vidioc_g_modulator(file, fh, &m);
2130 if (err)
2131 return err;
2132 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2133 p->rangelow = m.rangelow;
2134 p->rangehigh = m.rangehigh;
2135 p->modulation = (type == V4L2_TUNER_RADIO) ?
2136 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2137 return 0;
2138 }
2139 return -ENOTTY;
2140}
2141
4839e6c2
HV		 2142struct v4l2_ioctl_info {
2143 unsigned int ioctl;
27cd2aba 2144 u32 flags;
4839e6c2 2145 const char * const name;
86748f35
HV		 2146 union {
2147 u32 offset;
2148 int (*func)(const struct v4l2_ioctl_ops *ops,
2149 struct file *file, void *fh, void *p);
26ddcbcc 2150 } u;
86748f35 2151 void (*debug)(const void *arg, bool write_only);
4839e6c2
HV		 2152};
2153
2154/* This control needs a priority check */
2155#define INFO_FL_PRIO (1 << 0)
2156/* This control can be valid if the filehandle passes a control handler. */
2157#define INFO_FL_CTRL (1 << 1)
86748f35
HV		 2158/* This is a standard ioctl, no need for special code */
2159#define INFO_FL_STD (1 << 2)
2160/* This is ioctl has its own function */
2161#define INFO_FL_FUNC (1 << 3)
5a5adf6b
HV		 2162/* Queuing ioctl */
2163#define INFO_FL_QUEUE (1 << 4)
27cd2aba
HV		 2164/* Zero struct from after the field to the end */
2165#define INFO_FL_CLEAR(v4l2_struct, field) \
2166 ((offsetof(struct v4l2_struct, field) + \
2167 sizeof(((struct v4l2_struct *)0)->field)) << 16)
2168#define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
4839e6c2 2169
86748f35
HV		 2170#define IOCTL_INFO_STD(_ioctl, _vidioc, _debug, _flags) \
2171 [_IOC_NR(_ioctl)] = { \
2172 .ioctl = _ioctl, \
2173 .flags = _flags | INFO_FL_STD, \
2174 .name = #_ioctl, \
26ddcbcc 2175 .u.offset = offsetof(struct v4l2_ioctl_ops, _vidioc), \
86748f35
HV		 2176 .debug = _debug, \
2177 }
2178
2179#define IOCTL_INFO_FNC(_ioctl, _func, _debug, _flags) \
2180 [_IOC_NR(_ioctl)] = { \
2181 .ioctl = _ioctl, \
2182 .flags = _flags | INFO_FL_FUNC, \
2183 .name = #_ioctl, \
26ddcbcc 2184 .u.func = _func, \
86748f35
HV		 2185 .debug = _debug, \
2186 }
2187
4839e6c2 2188static struct v4l2_ioctl_info v4l2_ioctls[] = {
59076122 2189 IOCTL_INFO_FNC(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
be6c64e4 2190 IOCTL_INFO_FNC(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)),
e5ce558a 2191 IOCTL_INFO_FNC(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0),
be6c64e4 2192 IOCTL_INFO_FNC(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
5a5adf6b
HV		 2193 IOCTL_INFO_FNC(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2194 IOCTL_INFO_FNC(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
be6c64e4
HV		 2195 IOCTL_INFO_STD(VIDIOC_G_FBUF, vidioc_g_fbuf, v4l_print_framebuffer, 0),
2196 IOCTL_INFO_STD(VIDIOC_S_FBUF, vidioc_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
737c097b 2197 IOCTL_INFO_FNC(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO),
5a5adf6b 2198 IOCTL_INFO_FNC(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),
b799d09a 2199 IOCTL_INFO_STD(VIDIOC_EXPBUF, vidioc_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)),
5a5adf6b
HV		 2200 IOCTL_INFO_FNC(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),
2201 IOCTL_INFO_FNC(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2202 IOCTL_INFO_FNC(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
eb3728ed
HV		 2203 IOCTL_INFO_FNC(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
2204 IOCTL_INFO_FNC(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
ca371575 2205 IOCTL_INFO_STD(VIDIOC_G_STD, vidioc_g_std, v4l_print_std, 0),
4b1e2e4d
HV		 2206 IOCTL_INFO_FNC(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
2207 IOCTL_INFO_FNC(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
59076122 2208 IOCTL_INFO_FNC(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
efbceecd
HV		 2209 IOCTL_INFO_FNC(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
2210 IOCTL_INFO_FNC(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
4b1e2e4d
HV		 2211 IOCTL_INFO_FNC(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
2212 IOCTL_INFO_FNC(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
59076122
HV		 2213 IOCTL_INFO_STD(VIDIOC_G_AUDIO, vidioc_g_audio, v4l_print_audio, 0),
2214 IOCTL_INFO_STD(VIDIOC_S_AUDIO, vidioc_s_audio, v4l_print_audio, INFO_FL_PRIO),
efbceecd
HV		 2215 IOCTL_INFO_FNC(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
2216 IOCTL_INFO_FNC(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
59076122
HV		 2217 IOCTL_INFO_STD(VIDIOC_G_INPUT, vidioc_g_input, v4l_print_u32, 0),
2218 IOCTL_INFO_FNC(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
f9402a94
HV		 2219 IOCTL_INFO_STD(VIDIOC_G_EDID, vidioc_g_edid, v4l_print_edid, 0),
2220 IOCTL_INFO_STD(VIDIOC_S_EDID, vidioc_s_edid, v4l_print_edid, INFO_FL_PRIO),
59076122
HV		 2221 IOCTL_INFO_STD(VIDIOC_G_OUTPUT, vidioc_g_output, v4l_print_u32, 0),
2222 IOCTL_INFO_FNC(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
2223 IOCTL_INFO_FNC(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
2224 IOCTL_INFO_STD(VIDIOC_G_AUDOUT, vidioc_g_audout, v4l_print_audioout, 0),
2225 IOCTL_INFO_STD(VIDIOC_S_AUDOUT, vidioc_s_audout, v4l_print_audioout, INFO_FL_PRIO),
82b655bf 2226 IOCTL_INFO_FNC(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
4b1e2e4d
HV		 2227 IOCTL_INFO_STD(VIDIOC_S_MODULATOR, vidioc_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
2228 IOCTL_INFO_FNC(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
2229 IOCTL_INFO_FNC(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
d84f2d94
HV		 2230 IOCTL_INFO_FNC(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
2231 IOCTL_INFO_FNC(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
2232 IOCTL_INFO_FNC(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
865c4642
HV		 2233 IOCTL_INFO_STD(VIDIOC_G_SELECTION, vidioc_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)),
2234 IOCTL_INFO_STD(VIDIOC_S_SELECTION, vidioc_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)),
d806f2df
HV		 2235 IOCTL_INFO_STD(VIDIOC_G_JPEGCOMP, vidioc_g_jpegcomp, v4l_print_jpegcompression, 0),
2236 IOCTL_INFO_STD(VIDIOC_S_JPEGCOMP, vidioc_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
4b1e2e4d 2237 IOCTL_INFO_FNC(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
be6c64e4 2238 IOCTL_INFO_FNC(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
59076122
HV		 2239 IOCTL_INFO_STD(VIDIOC_ENUMAUDIO, vidioc_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
2240 IOCTL_INFO_STD(VIDIOC_ENUMAUDOUT, vidioc_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
d0547cba
HV		 2241 IOCTL_INFO_FNC(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
2242 IOCTL_INFO_FNC(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
458aa4a6 2243 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 2244 IOCTL_INFO_FNC(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
efbceecd
HV		 2245 IOCTL_INFO_FNC(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2246 IOCTL_INFO_FNC(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL),
9bc31633 2247 IOCTL_INFO_FNC(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
458aa4a6
HV		 2248 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMESIZES, vidioc_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
2249 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMEINTERVALS, vidioc_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
d806f2df
HV		 2250 IOCTL_INFO_STD(VIDIOC_G_ENC_INDEX, vidioc_g_enc_index, v4l_print_enc_idx, 0),
2251 IOCTL_INFO_STD(VIDIOC_ENCODER_CMD, vidioc_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2252 IOCTL_INFO_STD(VIDIOC_TRY_ENCODER_CMD, vidioc_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2253 IOCTL_INFO_STD(VIDIOC_DECODER_CMD, vidioc_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
2254 IOCTL_INFO_STD(VIDIOC_TRY_DECODER_CMD, vidioc_try_decoder_cmd, v4l_print_decoder_cmd, 0),
f16f77b0
HV		 2255 IOCTL_INFO_FNC(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
2256 IOCTL_INFO_FNC(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
4b1e2e4d 2257 IOCTL_INFO_FNC(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
efc626b0
HV		 2258 IOCTL_INFO_STD(VIDIOC_S_DV_TIMINGS, vidioc_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO),
2259 IOCTL_INFO_STD(VIDIOC_G_DV_TIMINGS, vidioc_g_dv_timings, v4l_print_dv_timings, 0),
458aa4a6
HV		 2260 IOCTL_INFO_FNC(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
2261 IOCTL_INFO_FNC(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
2262 IOCTL_INFO_FNC(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
5a5adf6b
HV		 2263 IOCTL_INFO_FNC(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2264 IOCTL_INFO_FNC(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
efc626b0
HV		 2265 IOCTL_INFO_STD(VIDIOC_ENUM_DV_TIMINGS, vidioc_enum_dv_timings, v4l_print_enum_dv_timings, 0),
2266 IOCTL_INFO_STD(VIDIOC_QUERY_DV_TIMINGS, vidioc_query_dv_timings, v4l_print_dv_timings, 0),
a1acb8f9 2267 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 2268 IOCTL_INFO_FNC(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
96b03d2a 2269 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 2270 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		 2271};
2272#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
2273
2274bool v4l2_is_known_ioctl(unsigned int cmd)
2275{
2276 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2277 return false;
2278 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
2279}
2280
5a5adf6b
HV		 2281struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd)
2282{
2283 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2284 return vdev->lock;
2285 if (test_bit(_IOC_NR(cmd), vdev->disable_locking))
2286 return NULL;
2287 if (vdev->queue && vdev->queue->lock &&
2288 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
2289 return vdev->queue->lock;
2290 return vdev->lock;
2291}
2292
4839e6c2
HV		 2293/* Common ioctl debug function. This function can be used by
2294 external ioctl messages as well as internal V4L ioctl */
4a085168 2295void v4l_printk_ioctl(const char *prefix, unsigned int cmd)
4839e6c2 2296{
86748f35 2297 const char *dir, *type;
4839e6c2 2298
4a085168
HV		 2299 if (prefix)
2300 printk(KERN_DEBUG "%s: ", prefix);
2301
4839e6c2
HV		 2302 switch (_IOC_TYPE(cmd)) {
2303 case 'd':
2304 type = "v4l2_int";
2305 break;
2306 case 'V':
2307 if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
2308 type = "v4l2";
2309 break;
2310 }
86748f35 2311 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
4839e6c2
HV		 2312 return;
2313 default:
2314 type = "unknown";
86748f35 2315 break;
4839e6c2
HV		 2316 }
2317
2318 switch (_IOC_DIR(cmd)) {
2319 case _IOC_NONE: dir = "--"; break;
2320 case _IOC_READ: dir = "r-"; break;
2321 case _IOC_WRITE: dir = "-w"; break;
2322 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
2323 default: dir = "*ERR*"; break;
2324 }
86748f35 2325 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
4839e6c2
HV		 2326 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
2327}
2328EXPORT_SYMBOL(v4l_printk_ioctl);
2329
069b7479 2330static long __video_do_ioctl(struct file *file,
35ea11ff
HV		 2331 unsigned int cmd, void *arg)
2332{
2333 struct video_device *vfd = video_devdata(file);
a399810c 2334 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
86748f35
HV		 2335 bool write_only = false;
2336 struct v4l2_ioctl_info default_info;
2337 const struct v4l2_ioctl_info *info;
d5fbf32f 2338 void *fh = file->private_data;
99cd47bc 2339 struct v4l2_fh *vfh = NULL;
17028cdb 2340 int dev_debug = vfd->dev_debug;
9190d191 2341 long ret = -ENOTTY;
35ea11ff 2342
6a717883 2343 if (ops == NULL) {
4a085168
HV		 2344 pr_warn("%s: has no ioctl_ops.\n",
2345 video_device_node_name(vfd));
9190d191 2346 return ret;
6a717883
HV		 2347 }
2348
b7284bb0 2349 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
99cd47bc
HV		 2350 vfh = file->private_data;
2351
48ea0be0 2352 if (v4l2_is_known_ioctl(cmd)) {
86748f35 2353 info = &v4l2_ioctls[_IOC_NR(cmd)];
48ea0be0
HV		 2354
2355 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) &&
2356 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
86748f35 2357 goto done;
4b902fec 2358
b7284bb0 2359 if (vfh && (info->flags & INFO_FL_PRIO)) {
4b902fec
HV		 2360 ret = v4l2_prio_check(vfd->prio, vfh->prio);
2361 if (ret)
86748f35 2362 goto done;
4b902fec 2363 }
86748f35
HV		 2364 } else {
2365 default_info.ioctl = cmd;
2366 default_info.flags = 0;
f18d8e07 2367 default_info.debug = v4l_print_default;
86748f35 2368 info = &default_info;
48ea0be0
HV		 2369 }
2370
86748f35 2371 write_only = _IOC_DIR(cmd) == _IOC_WRITE;
86748f35
HV		 2372 if (info->flags & INFO_FL_STD) {
2373 typedef int (*vidioc_op)(struct file *file, void *fh, void *p);
2374 const void *p = vfd->ioctl_ops;
26ddcbcc 2375 const vidioc_op *vidioc = p + info->u.offset;
86748f35
HV		 2376
2377 ret = (*vidioc)(file, fh, arg);
86748f35 2378 } else if (info->flags & INFO_FL_FUNC) {
26ddcbcc 2379 ret = info->u.func(ops, file, fh, arg);
f18d8e07
HV		 2380 } else if (!ops->vidioc_default) {
2381 ret = -ENOTTY;
2382 } else {
2383 ret = ops->vidioc_default(file, fh,
b7284bb0 2384 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
f18d8e07 2385 cmd, arg);
48ea0be0 2386 }
99cd47bc 2387
86748f35 2388done:
17028cdb
HV		 2389 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) {
2390 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) &&
2391 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF))
2392 return ret;
2393
4a085168 2394 v4l_printk_ioctl(video_device_node_name(vfd), cmd);
86748f35 2395 if (ret < 0)
505d04bd 2396 pr_cont(": error %ld", ret);
17028cdb 2397 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG))
86748f35 2398 pr_cont("\n");
86748f35
HV		 2399 else if (_IOC_DIR(cmd) == _IOC_NONE)
2400 info->debug(arg, write_only);
2401 else {
2402 pr_cont(": ");
2403 info->debug(arg, write_only);
35ea11ff
HV		 2404 }
2405 }
2406
2407 return ret;
2408}
2409
d14e6d76 2410static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
ba2d35c1 2411 void __user **user_ptr, void ***kernel_ptr)
d14e6d76
PO		 2412{
2413 int ret = 0;
2414
2415 switch (cmd) {
96b1a702 2416 case VIDIOC_PREPARE_BUF:
d14e6d76
PO		 2417 case VIDIOC_QUERYBUF:
2418 case VIDIOC_QBUF:
2419 case VIDIOC_DQBUF: {
2420 struct v4l2_buffer *buf = parg;
2421
2422 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
2423 if (buf->length > VIDEO_MAX_PLANES) {
2424 ret = -EINVAL;
2425 break;
2426 }
2427 *user_ptr = (void __user *)buf->m.planes;
ba2d35c1 2428 *kernel_ptr = (void **)&buf->m.planes;
d14e6d76
PO		 2429 *array_size = sizeof(struct v4l2_plane) * buf->length;
2430 ret = 1;
2431 }
2432 break;
2433 }
2434
dd519bb3
HV		 2435 case VIDIOC_G_EDID:
2436 case VIDIOC_S_EDID: {
2437 struct v4l2_edid *edid = parg;
ed45ce2c
HV		 2438
2439 if (edid->blocks) {
1b8b10cc
HV		 2440 if (edid->blocks > 256) {
2441 ret = -EINVAL;
2442 break;
2443 }
ed45ce2c 2444 *user_ptr = (void __user *)edid->edid;
ba2d35c1 2445 *kernel_ptr = (void **)&edid->edid;
ed45ce2c
HV		 2446 *array_size = edid->blocks * 128;
2447 ret = 1;
2448 }
2449 break;
2450 }
2451
d14e6d76
PO		 2452 case VIDIOC_S_EXT_CTRLS:
2453 case VIDIOC_G_EXT_CTRLS:
2454 case VIDIOC_TRY_EXT_CTRLS: {
2455 struct v4l2_ext_controls *ctrls = parg;
2456
2457 if (ctrls->count != 0) {
6c06108b
DC		 2458 if (ctrls->count > V4L2_CID_MAX_CTRLS) {
2459 ret = -EINVAL;
2460 break;
2461 }
d14e6d76 2462 *user_ptr = (void __user *)ctrls->controls;
ba2d35c1 2463 *kernel_ptr = (void **)&ctrls->controls;
d14e6d76
PO		 2464 *array_size = sizeof(struct v4l2_ext_control)
2465 * ctrls->count;
2466 ret = 1;
2467 }
2468 break;
2469 }
2470 }
2471
2472 return ret;
2473}
2474
fc0a8079
LP		 2475long
2476video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
2477 v4l2_kioctl func)
35ea11ff
HV		 2478{
2479 char sbuf[128];
2480 void *mbuf = NULL;
1d94aa36 2481 void *parg = (void *)arg;
069b7479 2482 long err = -EINVAL;
d14e6d76
PO		 2483 bool has_array_args;
2484 size_t array_size = 0;
35ea11ff 2485 void __user *user_ptr = NULL;
d14e6d76 2486 void **kernel_ptr = NULL;
35ea11ff 2487
35ea11ff 2488 /* Copy arguments into temp kernel buffer */
337f9d20 2489 if (_IOC_DIR(cmd) != _IOC_NONE) {
35ea11ff
HV		 2490 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
2491 parg = sbuf;
2492 } else {
2493 /* too big to allocate from stack */
2494 mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
2495 if (NULL == mbuf)
2496 return -ENOMEM;
2497 parg = mbuf;
2498 }
2499
2500 err = -EFAULT;
19c96e4b 2501 if (_IOC_DIR(cmd) & _IOC_WRITE) {
27cd2aba
HV		 2502 unsigned int n = _IOC_SIZE(cmd);
2503
2504 /*
2505 * In some cases, only a few fields are used as input,
2506 * i.e. when the app sets "index" and then the driver
2507 * fills in the rest of the structure for the thing
2508 * with that index. We only need to copy up the first
2509 * non-input field.
2510 */
2511 if (v4l2_is_known_ioctl(cmd)) {
2512 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags;
2513 if (flags & INFO_FL_CLEAR_MASK)
2514 n = (flags & INFO_FL_CLEAR_MASK) >> 16;
2515 }
19c96e4b
TP		 2516
2517 if (copy_from_user(parg, (void __user *)arg, n))
35ea11ff 2518 goto out;
19c96e4b
TP		 2519
2520 /* zero out anything we don't copy from userspace */
2521 if (n < _IOC_SIZE(cmd))
2522 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n);
337f9d20
TP		 2523 } else {
2524 /* read-only ioctl */
2525 memset(parg, 0, _IOC_SIZE(cmd));
19c96e4b 2526 }
35ea11ff
HV		 2527 }
2528
d14e6d76
PO		 2529 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
2530 if (err < 0)
2531 goto out;
2532 has_array_args = err;
35ea11ff 2533
d14e6d76
PO		 2534 if (has_array_args) {
2535 /*
2536 * When adding new types of array args, make sure that the
2537 * parent argument to ioctl (which contains the pointer to the
2538 * array) fits into sbuf (so that mbuf will still remain
2539 * unused up to here).
2540 */
2541 mbuf = kmalloc(array_size, GFP_KERNEL);
2542 err = -ENOMEM;
2543 if (NULL == mbuf)
2544 goto out_array_args;
2545 err = -EFAULT;
2546 if (copy_from_user(mbuf, user_ptr, array_size))
2547 goto out_array_args;
2548 *kernel_ptr = mbuf;
35ea11ff
HV		 2549 }
2550
2551 /* Handles IOCTL */
fc0a8079 2552 err = func(file, cmd, parg);
35ea11ff 2553 if (err == -ENOIOCTLCMD)
02bbb814 2554 err = -ENOTTY;
aa32f4c0
HV		 2555 if (err == 0) {
2556 if (cmd == VIDIOC_DQBUF)
2557 trace_v4l2_dqbuf(video_devdata(file)->minor, parg);
2558 else if (cmd == VIDIOC_QBUF)
2559 trace_v4l2_qbuf(video_devdata(file)->minor, parg);
2560 }
35ea11ff 2561
d14e6d76 2562 if (has_array_args) {
ba2d35c1 2563 *kernel_ptr = (void __force *)user_ptr;
d14e6d76 2564 if (copy_to_user(user_ptr, mbuf, array_size))
35ea11ff 2565 err = -EFAULT;
d14e6d76 2566 goto out_array_args;
35ea11ff 2567 }
5d7758ee
HV		 2568 /* VIDIOC_QUERY_DV_TIMINGS can return an error, but still have valid
2569 results that must be returned. */
2570 if (err < 0 && cmd != VIDIOC_QUERY_DV_TIMINGS)
35ea11ff
HV		 2571 goto out;
2572
d14e6d76 2573out_array_args:
35ea11ff
HV		 2574 /* Copy results into user buffer */
2575 switch (_IOC_DIR(cmd)) {
2576 case _IOC_READ:
2577 case (_IOC_WRITE | _IOC_READ):
2578 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
2579 err = -EFAULT;
2580 break;
2581 }
2582
2583out:
2584 kfree(mbuf);
2585 return err;
2586}
fc0a8079
LP		 2587EXPORT_SYMBOL(video_usercopy);
2588
2589long video_ioctl2(struct file *file,
2590 unsigned int cmd, unsigned long arg)
2591{
2592 return video_usercopy(file, cmd, arg, __video_do_ioctl);
2593}
8a522c91 2594EXPORT_SYMBOL(video_ioctl2);
Linux kernel - Deliverables
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