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[media] videodev2.h: add support for transfer functions
[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, "
74fdcb2e
HV		 260 "flags=0x%x, ycbcr_enc=%u, quantization=%u, "
261 "xfer_func=%u\n",
be6c64e4
HV		 262 pix->width, pix->height,
263 (pix->pixelformat & 0xff),
264 (pix->pixelformat >> 8) & 0xff,
265 (pix->pixelformat >> 16) & 0xff,
266 (pix->pixelformat >> 24) & 0xff,
267 prt_names(pix->field, v4l2_field_names),
268 pix->bytesperline, pix->sizeimage,
736d96b5 269 pix->colorspace, pix->flags, pix->ycbcr_enc,
74fdcb2e 270 pix->quantization, pix->xfer_func);
be6c64e4
HV		 271 break;
272 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
273 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
274 mp = &p->fmt.pix_mp;
275 pr_cont(", width=%u, height=%u, "
276 "format=%c%c%c%c, field=%s, "
1e8faa59 277 "colorspace=%d, num_planes=%u, flags=0x%x, "
74fdcb2e 278 "ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",
be6c64e4
HV		 279 mp->width, mp->height,
280 (mp->pixelformat & 0xff),
281 (mp->pixelformat >> 8) & 0xff,
282 (mp->pixelformat >> 16) & 0xff,
283 (mp->pixelformat >> 24) & 0xff,
284 prt_names(mp->field, v4l2_field_names),
736d96b5 285 mp->colorspace, mp->num_planes, mp->flags,
74fdcb2e 286 mp->ycbcr_enc, mp->quantization, mp->xfer_func);
be6c64e4
HV		 287 for (i = 0; i < mp->num_planes; i++)
288 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i,
289 mp->plane_fmt[i].bytesperline,
290 mp->plane_fmt[i].sizeimage);
291 break;
292 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
293 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
294 win = &p->fmt.win;
560dde24
HV		 295 /* Note: we can't print the clip list here since the clips
296 * pointer is a userspace pointer, not a kernelspace
297 * pointer. */
298 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",
299 win->w.width, win->w.height, win->w.left, win->w.top,
be6c64e4 300 prt_names(win->field, v4l2_field_names),
560dde24
HV		 301 win->chromakey, win->clipcount, win->clips,
302 win->bitmap, win->global_alpha);
be6c64e4
HV		 303 break;
304 case V4L2_BUF_TYPE_VBI_CAPTURE:
305 case V4L2_BUF_TYPE_VBI_OUTPUT:
306 vbi = &p->fmt.vbi;
307 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, "
308 "sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n",
309 vbi->sampling_rate, vbi->offset,
310 vbi->samples_per_line,
311 (vbi->sample_format & 0xff),
312 (vbi->sample_format >> 8) & 0xff,
313 (vbi->sample_format >> 16) & 0xff,
314 (vbi->sample_format >> 24) & 0xff,
315 vbi->start[0], vbi->start[1],
316 vbi->count[0], vbi->count[1]);
317 break;
318 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
319 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
320 sliced = &p->fmt.sliced;
321 pr_cont(", service_set=0x%08x, io_size=%d\n",
322 sliced->service_set, sliced->io_size);
323 for (i = 0; i < 24; i++)
324 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
325 sliced->service_lines[0][i],
326 sliced->service_lines[1][i]);
327 break;
582c52cb
AP		 328 case V4L2_BUF_TYPE_SDR_CAPTURE:
329 sdr = &p->fmt.sdr;
330 pr_cont(", pixelformat=%c%c%c%c\n",
331 (sdr->pixelformat >> 0) & 0xff,
332 (sdr->pixelformat >> 8) & 0xff,
333 (sdr->pixelformat >> 16) & 0xff,
334 (sdr->pixelformat >> 24) & 0xff);
335 break;
be6c64e4
HV		 336 }
337}
338
339static void v4l_print_framebuffer(const void *arg, bool write_only)
340{
341 const struct v4l2_framebuffer *p = arg;
342
343 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, "
344 "height=%u, pixelformat=%c%c%c%c, "
560dde24 345 "bytesperline=%u, sizeimage=%u, colorspace=%d\n",
be6c64e4
HV		 346 p->capability, p->flags, p->base,
347 p->fmt.width, p->fmt.height,
348 (p->fmt.pixelformat & 0xff),
349 (p->fmt.pixelformat >> 8) & 0xff,
350 (p->fmt.pixelformat >> 16) & 0xff,
351 (p->fmt.pixelformat >> 24) & 0xff,
352 p->fmt.bytesperline, p->fmt.sizeimage,
353 p->fmt.colorspace);
354}
355
e325b244
HV		 356static void v4l_print_buftype(const void *arg, bool write_only)
357{
358 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names));
359}
360
4b1e2e4d
HV		 361static void v4l_print_modulator(const void *arg, bool write_only)
362{
363 const struct v4l2_modulator *p = arg;
364
365 if (write_only)
560dde24 366 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans);
4b1e2e4d 367 else
27d5a87c 368 pr_cont("index=%u, name=%.*s, capability=0x%x, "
4b1e2e4d 369 "rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
27d5a87c 370 p->index, (int)sizeof(p->name), p->name, p->capability,
4b1e2e4d
HV		 371 p->rangelow, p->rangehigh, p->txsubchans);
372}
373
374static void v4l_print_tuner(const void *arg, bool write_only)
375{
376 const struct v4l2_tuner *p = arg;
377
378 if (write_only)
379 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode);
380 else
27d5a87c 381 pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, "
4b1e2e4d
HV		 382 "rangelow=%u, rangehigh=%u, signal=%u, afc=%d, "
383 "rxsubchans=0x%x, audmode=%u\n",
27d5a87c 384 p->index, (int)sizeof(p->name), p->name, p->type,
4b1e2e4d
HV		 385 p->capability, p->rangelow,
386 p->rangehigh, p->signal, p->afc,
387 p->rxsubchans, p->audmode);
388}
389
390static void v4l_print_frequency(const void *arg, bool write_only)
391{
392 const struct v4l2_frequency *p = arg;
393
394 pr_cont("tuner=%u, type=%u, frequency=%u\n",
395 p->tuner, p->type, p->frequency);
396}
397
398static void v4l_print_standard(const void *arg, bool write_only)
399{
400 const struct v4l2_standard *p = arg;
401
27d5a87c 402 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, "
4b1e2e4d 403 "framelines=%u\n", p->index,
27d5a87c 404 (unsigned long long)p->id, (int)sizeof(p->name), p->name,
4b1e2e4d
HV		 405 p->frameperiod.numerator,
406 p->frameperiod.denominator,
407 p->framelines);
408}
409
410static void v4l_print_std(const void *arg, bool write_only)
411{
412 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg);
413}
414
415static void v4l_print_hw_freq_seek(const void *arg, bool write_only)
416{
417 const struct v4l2_hw_freq_seek *p = arg;
418
5e788317
HV		 419 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, "
420 "rangelow=%u, rangehigh=%u\n",
421 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing,
422 p->rangelow, p->rangehigh);
4b1e2e4d
HV		 423}
424
eb3728ed 425static void v4l_print_requestbuffers(const void *arg, bool write_only)
59076122 426{
eb3728ed
HV		 427 const struct v4l2_requestbuffers *p = arg;
428
429 pr_cont("count=%d, type=%s, memory=%s\n",
430 p->count,
431 prt_names(p->type, v4l2_type_names),
432 prt_names(p->memory, v4l2_memory_names));
59076122
HV		 433}
434
eb3728ed 435static void v4l_print_buffer(const void *arg, bool write_only)
35ea11ff 436{
eb3728ed
HV		 437 const struct v4l2_buffer *p = arg;
438 const struct v4l2_timecode *tc = &p->timecode;
439 const struct v4l2_plane *plane;
d14e6d76 440 int i;
35ea11ff 441
eb3728ed
HV		 442 pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, "
443 "flags=0x%08x, field=%s, sequence=%d, memory=%s",
35ea11ff
HV		 444 p->timestamp.tv_sec / 3600,
445 (int)(p->timestamp.tv_sec / 60) % 60,
446 (int)(p->timestamp.tv_sec % 60),
b045979d 447 (long)p->timestamp.tv_usec,
35ea11ff
HV		 448 p->index,
449 prt_names(p->type, v4l2_type_names),
eb3728ed
HV		 450 p->flags, prt_names(p->field, v4l2_field_names),
451 p->sequence, prt_names(p->memory, v4l2_memory_names));
d14e6d76
PO		 452
453 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
eb3728ed 454 pr_cont("\n");
d14e6d76
PO		 455 for (i = 0; i < p->length; ++i) {
456 plane = &p->m.planes[i];
eb3728ed 457 printk(KERN_DEBUG
560dde24 458 "plane %d: bytesused=%d, data_offset=0x%08x, "
eb3728ed 459 "offset/userptr=0x%lx, length=%d\n",
d14e6d76
PO		 460 i, plane->bytesused, plane->data_offset,
461 plane->m.userptr, plane->length);
462 }
463 } else {
560dde24 464 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n",
d14e6d76
PO		 465 p->bytesused, p->m.userptr, p->length);
466 }
467
eb3728ed
HV		 468 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, "
469 "flags=0x%08x, frames=%d, userbits=0x%08x\n",
35ea11ff
HV		 470 tc->hours, tc->minutes, tc->seconds,
471 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
472}
473
b799d09a
TS		 474static void v4l_print_exportbuffer(const void *arg, bool write_only)
475{
476 const struct v4l2_exportbuffer *p = arg;
477
478 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n",
479 p->fd, prt_names(p->type, v4l2_type_names),
480 p->index, p->plane, p->flags);
481}
482
eb3728ed
HV		 483static void v4l_print_create_buffers(const void *arg, bool write_only)
484{
485 const struct v4l2_create_buffers *p = arg;
486
487 pr_cont("index=%d, count=%d, memory=%s, ",
488 p->index, p->count,
489 prt_names(p->memory, v4l2_memory_names));
490 v4l_print_format(&p->format, write_only);
491}
492
493static void v4l_print_streamparm(const void *arg, bool write_only)
494{
495 const struct v4l2_streamparm *p = arg;
496
497 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
498
499 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
500 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
501 const struct v4l2_captureparm *c = &p->parm.capture;
502
503 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, "
504 "extendedmode=%d, readbuffers=%d\n",
505 c->capability, c->capturemode,
506 c->timeperframe.numerator, c->timeperframe.denominator,
507 c->extendedmode, c->readbuffers);
508 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
509 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
510 const struct v4l2_outputparm *c = &p->parm.output;
511
512 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, "
513 "extendedmode=%d, writebuffers=%d\n",
514 c->capability, c->outputmode,
515 c->timeperframe.numerator, c->timeperframe.denominator,
516 c->extendedmode, c->writebuffers);
560dde24
HV		 517 } else {
518 pr_cont("\n");
eb3728ed
HV		 519 }
520}
521
efbceecd
HV		 522static void v4l_print_queryctrl(const void *arg, bool write_only)
523{
524 const struct v4l2_queryctrl *p = arg;
525
27d5a87c 526 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, "
efbceecd 527 "step=%d, default=%d, flags=0x%08x\n",
27d5a87c 528 p->id, p->type, (int)sizeof(p->name), p->name,
efbceecd
HV		 529 p->minimum, p->maximum,
530 p->step, p->default_value, p->flags);
531}
532
e6bee368
HV		 533static void v4l_print_query_ext_ctrl(const void *arg, bool write_only)
534{
535 const struct v4l2_query_ext_ctrl *p = arg;
536
537 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%lld/%lld, "
538 "step=%lld, default=%lld, flags=0x%08x, elem_size=%u, elems=%u, "
0176077a 539 "nr_of_dims=%u, dims=%u,%u,%u,%u\n",
e6bee368
HV		 540 p->id, p->type, (int)sizeof(p->name), p->name,
541 p->minimum, p->maximum,
542 p->step, p->default_value, p->flags,
543 p->elem_size, p->elems, p->nr_of_dims,
0176077a 544 p->dims[0], p->dims[1], p->dims[2], p->dims[3]);
e6bee368
HV		 545}
546
efbceecd
HV		 547static void v4l_print_querymenu(const void *arg, bool write_only)
548{
549 const struct v4l2_querymenu *p = arg;
550
551 pr_cont("id=0x%x, index=%d\n", p->id, p->index);
552}
553
554static void v4l_print_control(const void *arg, bool write_only)
555{
556 const struct v4l2_control *p = arg;
557
558 pr_cont("id=0x%x, value=%d\n", p->id, p->value);
559}
560
561static void v4l_print_ext_controls(const void *arg, bool write_only)
562{
563 const struct v4l2_ext_controls *p = arg;
564 int i;
565
566 pr_cont("class=0x%x, count=%d, error_idx=%d",
567 p->ctrl_class, p->count, p->error_idx);
568 for (i = 0; i < p->count; i++) {
017ab36a 569 if (!p->controls[i].size)
efbceecd
HV		 570 pr_cont(", id/val=0x%x/0x%x",
571 p->controls[i].id, p->controls[i].value);
572 else
573 pr_cont(", id/size=0x%x/%u",
574 p->controls[i].id, p->controls[i].size);
575 }
576 pr_cont("\n");
577}
578
d84f2d94 579static void v4l_print_cropcap(const void *arg, bool write_only)
eb3728ed 580{
d84f2d94
HV		 581 const struct v4l2_cropcap *p = arg;
582
583 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, "
a112fbaf 584 "defrect wxh=%dx%d, x,y=%d,%d, "
d84f2d94
HV		 585 "pixelaspect %d/%d\n",
586 prt_names(p->type, v4l2_type_names),
587 p->bounds.width, p->bounds.height,
588 p->bounds.left, p->bounds.top,
589 p->defrect.width, p->defrect.height,
590 p->defrect.left, p->defrect.top,
591 p->pixelaspect.numerator, p->pixelaspect.denominator);
eb3728ed
HV		 592}
593
d84f2d94 594static void v4l_print_crop(const void *arg, bool write_only)
35ea11ff 595{
d84f2d94
HV		 596 const struct v4l2_crop *p = arg;
597
598 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n",
599 prt_names(p->type, v4l2_type_names),
600 p->c.width, p->c.height,
601 p->c.left, p->c.top);
602}
603
604static void v4l_print_selection(const void *arg, bool write_only)
605{
606 const struct v4l2_selection *p = arg;
607
608 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n",
609 prt_names(p->type, v4l2_type_names),
610 p->target, p->flags,
611 p->r.width, p->r.height, p->r.left, p->r.top);
612}
613
d806f2df
HV		 614static void v4l_print_jpegcompression(const void *arg, bool write_only)
615{
616 const struct v4l2_jpegcompression *p = arg;
617
618 pr_cont("quality=%d, APPn=%d, APP_len=%d, "
619 "COM_len=%d, jpeg_markers=0x%x\n",
620 p->quality, p->APPn, p->APP_len,
621 p->COM_len, p->jpeg_markers);
622}
623
624static void v4l_print_enc_idx(const void *arg, bool write_only)
625{
626 const struct v4l2_enc_idx *p = arg;
627
628 pr_cont("entries=%d, entries_cap=%d\n",
629 p->entries, p->entries_cap);
630}
631
632static void v4l_print_encoder_cmd(const void *arg, bool write_only)
633{
634 const struct v4l2_encoder_cmd *p = arg;
635
636 pr_cont("cmd=%d, flags=0x%x\n",
637 p->cmd, p->flags);
638}
639
640static void v4l_print_decoder_cmd(const void *arg, bool write_only)
641{
642 const struct v4l2_decoder_cmd *p = arg;
643
644 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags);
645
646 if (p->cmd == V4L2_DEC_CMD_START)
647 pr_info("speed=%d, format=%u\n",
648 p->start.speed, p->start.format);
649 else if (p->cmd == V4L2_DEC_CMD_STOP)
650 pr_info("pts=%llu\n", p->stop.pts);
651}
652
96b03d2a 653static void v4l_print_dbg_chip_info(const void *arg, bool write_only)
79b0c640 654{
96b03d2a 655 const struct v4l2_dbg_chip_info *p = arg;
79b0c640
HV		 656
657 pr_cont("type=%u, ", p->match.type);
3eef2510 658 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
79b0c640
HV		 659 pr_cont("name=%.*s, ",
660 (int)sizeof(p->match.name), p->match.name);
661 else
662 pr_cont("addr=%u, ", p->match.addr);
663 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name);
664}
665
f16f77b0
HV		 666static void v4l_print_dbg_register(const void *arg, bool write_only)
667{
668 const struct v4l2_dbg_register *p = arg;
669
670 pr_cont("type=%u, ", p->match.type);
3eef2510 671 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
27d5a87c
HV		 672 pr_cont("name=%.*s, ",
673 (int)sizeof(p->match.name), p->match.name);
f16f77b0
HV		 674 else
675 pr_cont("addr=%u, ", p->match.addr);
676 pr_cont("reg=0x%llx, val=0x%llx\n",
677 p->reg, p->val);
678}
679
efc626b0 680static void v4l_print_dv_timings(const void *arg, bool write_only)
5d7758ee 681{
efc626b0
HV		 682 const struct v4l2_dv_timings *p = arg;
683
5d7758ee
HV		 684 switch (p->type) {
685 case V4L2_DV_BT_656_1120:
efc626b0
HV		 686 pr_cont("type=bt-656/1120, interlaced=%u, "
687 "pixelclock=%llu, "
688 "width=%u, height=%u, polarities=0x%x, "
689 "hfrontporch=%u, hsync=%u, "
690 "hbackporch=%u, vfrontporch=%u, "
691 "vsync=%u, vbackporch=%u, "
692 "il_vfrontporch=%u, il_vsync=%u, "
693 "il_vbackporch=%u, standards=0x%x, flags=0x%x\n",
5d7758ee
HV		 694 p->bt.interlaced, p->bt.pixelclock,
695 p->bt.width, p->bt.height,
696 p->bt.polarities, p->bt.hfrontporch,
697 p->bt.hsync, p->bt.hbackporch,
698 p->bt.vfrontporch, p->bt.vsync,
699 p->bt.vbackporch, p->bt.il_vfrontporch,
700 p->bt.il_vsync, p->bt.il_vbackporch,
701 p->bt.standards, p->bt.flags);
702 break;
703 default:
efc626b0 704 pr_cont("type=%d\n", p->type);
5d7758ee
HV		 705 break;
706 }
707}
708
efc626b0
HV		 709static void v4l_print_enum_dv_timings(const void *arg, bool write_only)
710{
711 const struct v4l2_enum_dv_timings *p = arg;
712
713 pr_cont("index=%u, ", p->index);
714 v4l_print_dv_timings(&p->timings, write_only);
715}
716
717static void v4l_print_dv_timings_cap(const void *arg, bool write_only)
718{
719 const struct v4l2_dv_timings_cap *p = arg;
720
721 switch (p->type) {
722 case V4L2_DV_BT_656_1120:
723 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, "
724 "pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
725 p->bt.min_width, p->bt.max_width,
726 p->bt.min_height, p->bt.max_height,
727 p->bt.min_pixelclock, p->bt.max_pixelclock,
728 p->bt.standards, p->bt.capabilities);
729 break;
730 default:
731 pr_cont("type=%u\n", p->type);
732 break;
733 }
734}
735
458aa4a6
HV		 736static void v4l_print_frmsizeenum(const void *arg, bool write_only)
737{
738 const struct v4l2_frmsizeenum *p = arg;
739
740 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u",
741 p->index,
742 (p->pixel_format & 0xff),
743 (p->pixel_format >> 8) & 0xff,
744 (p->pixel_format >> 16) & 0xff,
745 (p->pixel_format >> 24) & 0xff,
746 p->type);
747 switch (p->type) {
748 case V4L2_FRMSIZE_TYPE_DISCRETE:
560dde24 749 pr_cont(", wxh=%ux%u\n",
458aa4a6
HV		 750 p->discrete.width, p->discrete.height);
751 break;
752 case V4L2_FRMSIZE_TYPE_STEPWISE:
560dde24 753 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n",
458aa4a6
HV		 754 p->stepwise.min_width, p->stepwise.min_height,
755 p->stepwise.step_width, p->stepwise.step_height,
756 p->stepwise.max_width, p->stepwise.max_height);
757 break;
758 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
759 /* fall through */
760 default:
761 pr_cont("\n");
762 break;
763 }
764}
765
766static void v4l_print_frmivalenum(const void *arg, bool write_only)
767{
768 const struct v4l2_frmivalenum *p = arg;
769
770 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u",
771 p->index,
772 (p->pixel_format & 0xff),
773 (p->pixel_format >> 8) & 0xff,
774 (p->pixel_format >> 16) & 0xff,
775 (p->pixel_format >> 24) & 0xff,
776 p->width, p->height, p->type);
777 switch (p->type) {
778 case V4L2_FRMIVAL_TYPE_DISCRETE:
560dde24 779 pr_cont(", fps=%d/%d\n",
458aa4a6
HV		 780 p->discrete.numerator,
781 p->discrete.denominator);
782 break;
783 case V4L2_FRMIVAL_TYPE_STEPWISE:
560dde24 784 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n",
458aa4a6
HV		 785 p->stepwise.min.numerator,
786 p->stepwise.min.denominator,
787 p->stepwise.max.numerator,
788 p->stepwise.max.denominator,
789 p->stepwise.step.numerator,
790 p->stepwise.step.denominator);
791 break;
792 case V4L2_FRMIVAL_TYPE_CONTINUOUS:
793 /* fall through */
794 default:
795 pr_cont("\n");
796 break;
797 }
798}
799
800static void v4l_print_event(const void *arg, bool write_only)
801{
802 const struct v4l2_event *p = arg;
803 const struct v4l2_event_ctrl *c;
804
805 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, "
806 "timestamp=%lu.%9.9lu\n",
807 p->type, p->pending, p->sequence, p->id,
808 p->timestamp.tv_sec, p->timestamp.tv_nsec);
809 switch (p->type) {
810 case V4L2_EVENT_VSYNC:
811 printk(KERN_DEBUG "field=%s\n",
812 prt_names(p->u.vsync.field, v4l2_field_names));
813 break;
814 case V4L2_EVENT_CTRL:
815 c = &p->u.ctrl;
816 printk(KERN_DEBUG "changes=0x%x, type=%u, ",
817 c->changes, c->type);
818 if (c->type == V4L2_CTRL_TYPE_INTEGER64)
819 pr_cont("value64=%lld, ", c->value64);
820 else
821 pr_cont("value=%d, ", c->value);
560dde24
HV		 822 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, "
823 "default_value=%d\n",
458aa4a6
HV		 824 c->flags, c->minimum, c->maximum,
825 c->step, c->default_value);
826 break;
827 case V4L2_EVENT_FRAME_SYNC:
828 pr_cont("frame_sequence=%u\n",
829 p->u.frame_sync.frame_sequence);
830 break;
831 }
832}
833
834static void v4l_print_event_subscription(const void *arg, bool write_only)
835{
836 const struct v4l2_event_subscription *p = arg;
837
838 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
839 p->type, p->id, p->flags);
840}
841
842static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only)
843{
844 const struct v4l2_sliced_vbi_cap *p = arg;
845 int i;
846
847 pr_cont("type=%s, service_set=0x%08x\n",
848 prt_names(p->type, v4l2_type_names), p->service_set);
849 for (i = 0; i < 24; i++)
850 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
851 p->service_lines[0][i],
852 p->service_lines[1][i]);
853}
854
82b655bf
HV		 855static void v4l_print_freq_band(const void *arg, bool write_only)
856{
857 const struct v4l2_frequency_band *p = arg;
858
859 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, "
560dde24 860 "rangelow=%u, rangehigh=%u, modulation=0x%x\n",
82b655bf
HV		 861 p->tuner, p->type, p->index,
862 p->capability, p->rangelow,
863 p->rangehigh, p->modulation);
864}
865
dd519bb3
HV		 866static void v4l_print_edid(const void *arg, bool write_only)
867{
868 const struct v4l2_edid *p = arg;
869
870 pr_cont("pad=%u, start_block=%u, blocks=%u\n",
871 p->pad, p->start_block, p->blocks);
872}
873
efc626b0
HV		 874static void v4l_print_u32(const void *arg, bool write_only)
875{
876 pr_cont("value=%u\n", *(const u32 *)arg);
877}
878
879static void v4l_print_newline(const void *arg, bool write_only)
880{
881 pr_cont("\n");
882}
883
f18d8e07
HV		 884static void v4l_print_default(const void *arg, bool write_only)
885{
886 pr_cont("driver-specific ioctl\n");
887}
888
efbceecd 889static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
35ea11ff
HV		 890{
891 __u32 i;
892
893 /* zero the reserved fields */
894 c->reserved[0] = c->reserved[1] = 0;
6b5a9492 895 for (i = 0; i < c->count; i++)
35ea11ff 896 c->controls[i].reserved2[0] = 0;
6b5a9492 897
35ea11ff
HV		 898 /* V4L2_CID_PRIVATE_BASE cannot be used as control class
899 when using extended controls.
900 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
901 is it allowed for backwards compatibility.
902 */
903 if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE)
904 return 0;
9b239b22
HV		 905 if (c->ctrl_class == 0)
906 return 1;
35ea11ff
HV		 907 /* Check that all controls are from the same control class. */
908 for (i = 0; i < c->count; i++) {
909 if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) {
910 c->error_idx = i;
911 return 0;
912 }
913 }
914 return 1;
915}
916
4b20259f 917static int check_fmt(struct file *file, enum v4l2_buf_type type)
35ea11ff 918{
4b20259f
HV		 919 struct video_device *vfd = video_devdata(file);
920 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
921 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
922 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI;
582c52cb 923 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
4b20259f
HV		 924 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
925 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
926
a399810c
HV		 927 if (ops == NULL)
928 return -EINVAL;
929
35ea11ff
HV		 930 switch (type) {
931 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f
HV		 932 if (is_vid && is_rx &&
933 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane))
d14e6d76
PO		 934 return 0;
935 break;
936 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 937 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_cap_mplane)
35ea11ff
HV		 938 return 0;
939 break;
940 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 941 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay)
35ea11ff
HV		 942 return 0;
943 break;
944 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f
HV		 945 if (is_vid && is_tx &&
946 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane))
d14e6d76
PO		 947 return 0;
948 break;
949 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 950 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane)
35ea11ff
HV		 951 return 0;
952 break;
953 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 954 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay)
35ea11ff
HV		 955 return 0;
956 break;
957 case V4L2_BUF_TYPE_VBI_CAPTURE:
4b20259f 958 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap)
35ea11ff
HV		 959 return 0;
960 break;
961 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 962 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out)
35ea11ff
HV		 963 return 0;
964 break;
965 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
4b20259f 966 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap)
35ea11ff
HV		 967 return 0;
968 break;
969 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 970 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out)
35ea11ff
HV		 971 return 0;
972 break;
582c52cb
AP		 973 case V4L2_BUF_TYPE_SDR_CAPTURE:
974 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap)
975 return 0;
976 break;
633c98e5 977 default:
35ea11ff
HV		 978 break;
979 }
980 return -EINVAL;
981}
982
d52e2381
LP		 983static void v4l_sanitize_format(struct v4l2_format *fmt)
984{
985 unsigned int offset;
986
987 /*
988 * The v4l2_pix_format structure has been extended with fields that were
989 * not previously required to be set to zero by applications. The priv
990 * field, when set to a magic value, indicates the the extended fields
991 * are valid. Otherwise they will contain undefined values. To simplify
992 * the API towards drivers zero the extended fields and set the priv
993 * field to the magic value when the extended pixel format structure
994 * isn't used by applications.
995 */
996
997 if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
998 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
999 return;
1000
1001 if (fmt->fmt.pix.priv == V4L2_PIX_FMT_PRIV_MAGIC)
1002 return;
1003
1004 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1005
1006 offset = offsetof(struct v4l2_pix_format, priv)
1007 + sizeof(fmt->fmt.pix.priv);
1008 memset(((void *)&fmt->fmt.pix) + offset, 0,
1009 sizeof(fmt->fmt.pix) - offset);
1010}
1011
59076122
HV		 1012static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
1013 struct file *file, void *fh, void *arg)
1014{
1015 struct v4l2_capability *cap = (struct v4l2_capability *)arg;
d52e2381 1016 int ret;
59076122
HV		 1017
1018 cap->version = LINUX_VERSION_CODE;
d52e2381
LP		 1019
1020 ret = ops->vidioc_querycap(file, fh, cap);
1021
1022 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT;
454a4e72
HV		 1023 /*
1024 * Drivers MUST fill in device_caps, so check for this and
1025 * warn if it was forgotten.
1026 */
1027 WARN_ON(!(cap->capabilities & V4L2_CAP_DEVICE_CAPS) ||
1028 !cap->device_caps);
796a2bd2 1029 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT;
d52e2381
LP		 1030
1031 return ret;
59076122
HV		 1032}
1033
1034static int v4l_s_input(const struct v4l2_ioctl_ops *ops,
1035 struct file *file, void *fh, void *arg)
1036{
1037 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg);
1038}
1039
1040static int v4l_s_output(const struct v4l2_ioctl_ops *ops,
1041 struct file *file, void *fh, void *arg)
1042{
1043 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg);
1044}
1045
d0547cba
HV		 1046static int v4l_g_priority(const struct v4l2_ioctl_ops *ops,
1047 struct file *file, void *fh, void *arg)
1048{
1049 struct video_device *vfd;
1050 u32 *p = arg;
1051
d0547cba 1052 vfd = video_devdata(file);
59b702ea 1053 *p = v4l2_prio_max(vfd->prio);
d0547cba
HV		 1054 return 0;
1055}
1056
1057static int v4l_s_priority(const struct v4l2_ioctl_ops *ops,
1058 struct file *file, void *fh, void *arg)
1059{
1060 struct video_device *vfd;
1061 struct v4l2_fh *vfh;
1062 u32 *p = arg;
1063
d0547cba 1064 vfd = video_devdata(file);
2438e78a
HV		 1065 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
1066 return -ENOTTY;
d0547cba 1067 vfh = file->private_data;
59b702ea 1068 return v4l2_prio_change(vfd->prio, &vfh->prio, *p);
d0547cba
HV		 1069}
1070
59076122
HV		 1071static int v4l_enuminput(const struct v4l2_ioctl_ops *ops,
1072 struct file *file, void *fh, void *arg)
1073{
73f35418 1074 struct video_device *vfd = video_devdata(file);
59076122
HV		 1075 struct v4l2_input *p = arg;
1076
1077 /*
02fa6282 1078 * We set the flags for CAP_DV_TIMINGS &
59076122
HV		 1079 * CAP_STD here based on ioctl handler provided by the
1080 * driver. If the driver doesn't support these
1081 * for a specific input, it must override these flags.
1082 */
73f35418 1083 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
59076122 1084 p->capabilities |= V4L2_IN_CAP_STD;
59076122
HV		 1085
1086 return ops->vidioc_enum_input(file, fh, p);
1087}
1088
1089static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops,
1090 struct file *file, void *fh, void *arg)
1091{
73f35418 1092 struct video_device *vfd = video_devdata(file);
59076122
HV		 1093 struct v4l2_output *p = arg;
1094
1095 /*
02fa6282 1096 * We set the flags for CAP_DV_TIMINGS &
59076122
HV		 1097 * CAP_STD here based on ioctl handler provided by the
1098 * driver. If the driver doesn't support these
1099 * for a specific output, it must override these flags.
1100 */
73f35418 1101 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
59076122 1102 p->capabilities |= V4L2_OUT_CAP_STD;
59076122
HV		 1103
1104 return ops->vidioc_enum_output(file, fh, p);
1105}
1106
ba300204
HV		 1107static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
1108{
1109 const unsigned sz = sizeof(fmt->description);
1110 const char *descr = NULL;
1111 u32 flags = 0;
1112
1113 /*
1114 * We depart from the normal coding style here since the descriptions
1115 * should be aligned so it is easy to see which descriptions will be
1116 * longer than 31 characters (the max length for a description).
1117 * And frankly, this is easier to read anyway.
1118 *
1119 * Note that gcc will use O(log N) comparisons to find the right case.
1120 */
1121 switch (fmt->pixelformat) {
1122 /* Max description length mask: descr = "0123456789012345678901234567890" */
1123 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break;
1124 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break;
1125 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break;
1126 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break;
1127 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break;
1128 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break;
1129 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break;
1130 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break;
1131 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break;
1132 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break;
1133 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break;
1134 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break;
1135 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break;
1136 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break;
1137 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break;
1138 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break;
1139 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break;
1140 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break;
1141 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break;
1142 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break;
1143 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break;
1144 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break;
1145 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break;
1146 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break;
1147 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break;
1148 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break;
1149 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break;
2e5e435f 1150 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break;
ba300204
HV		 1151 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break;
1152 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break;
1153 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break;
1154 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break;
1155 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break;
1156 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break;
1157 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break;
1158 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break;
1159 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break;
1160 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break;
1161 case V4L2_PIX_FMT_YUV422P: descr = "Planar YVU 4:2:2"; break;
1162 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break;
1163 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break;
1164 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break;
1165 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break;
1166 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break;
1167 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break;
1168 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break;
1169 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break;
1170 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break;
1171 case V4L2_PIX_FMT_HM12: descr = "YUV 4:2:0 (16x16 Macroblocks)"; break;
1172 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break;
1173 case V4L2_PIX_FMT_NV12: descr = "Y/CbCr 4:2:0"; break;
1174 case V4L2_PIX_FMT_NV21: descr = "Y/CrCb 4:2:0"; break;
1175 case V4L2_PIX_FMT_NV16: descr = "Y/CbCr 4:2:2"; break;
1176 case V4L2_PIX_FMT_NV61: descr = "Y/CrCb 4:2:2"; break;
1177 case V4L2_PIX_FMT_NV24: descr = "Y/CbCr 4:4:4"; break;
1178 case V4L2_PIX_FMT_NV42: descr = "Y/CrCb 4:4:4"; break;
1179 case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break;
1180 case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break;
1181 case V4L2_PIX_FMT_NV16M: descr = "Y/CbCr 4:2:2 (N-C)"; break;
1182 case V4L2_PIX_FMT_NV61M: descr = "Y/CrCb 4:2:2 (N-C)"; break;
1183 case V4L2_PIX_FMT_NV12MT: descr = "Y/CbCr 4:2:0 (64x32 MB, N-C)"; break;
1184 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/CbCr 4:2:0 (16x16 MB, N-C)"; break;
1185 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break;
1186 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break;
1187 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break;
1188 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break;
1189 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break;
1190 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break;
1191 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break;
1192 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break;
1193 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break;
1194 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break;
1195 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break;
1196 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break;
1197 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break;
1198 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break;
1199 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break;
1200 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break;
1201 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break;
1202 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break;
1203 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break;
1204 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break;
1205 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break;
1206 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break;
1207 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break;
1208 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break;
1209 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break;
1210 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break;
1211 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR (Exp.)"; break;
99b74277 1212 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break;
ba300204
HV		 1213 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break;
1214 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break;
1215 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break;
1216 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break;
1217 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break;
1218 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break;
1219 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break;
48fc10aa
AP		 1220 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break;
1221 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break;
ba300204
HV		 1222 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break;
1223 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break;
1224 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break;
1225
1226 default:
1227 /* Compressed formats */
1228 flags = V4L2_FMT_FLAG_COMPRESSED;
1229 switch (fmt->pixelformat) {
1230 /* Max description length mask: descr = "0123456789012345678901234567890" */
1231 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break;
1232 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break;
1233 case V4L2_PIX_FMT_DV: descr = "1394"; break;
1234 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break;
1235 case V4L2_PIX_FMT_H264: descr = "H.264"; break;
1236 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break;
1237 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break;
1238 case V4L2_PIX_FMT_H263: descr = "H.263"; break;
1239 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break;
1240 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break;
1241 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 part 2 ES"; break;
1242 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break;
1243 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break;
1244 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break;
1245 case V4L2_PIX_FMT_VP8: descr = "VP8"; break;
1246 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break;
1247 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break;
1248 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break;
1249 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break;
1250 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break;
1251 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break;
1252 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break;
1253 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break;
1254 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break;
1255 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break;
1256 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break;
1257 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break;
1258 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break;
1259 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break;
1260 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break;
1261 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break;
1262 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break;
1263 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break;
1264 default:
1265 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat);
1266 if (fmt->description[0])
1267 return;
1268 flags = 0;
1269 snprintf(fmt->description, sz, "%c%c%c%c%s",
1270 (char)(fmt->pixelformat & 0x7f),
1271 (char)((fmt->pixelformat >> 8) & 0x7f),
1272 (char)((fmt->pixelformat >> 16) & 0x7f),
1273 (char)((fmt->pixelformat >> 24) & 0x7f),
1274 (fmt->pixelformat & (1 << 31)) ? "-BE" : "");
1275 break;
1276 }
1277 }
1278
1279 if (descr)
1280 WARN_ON(strlcpy(fmt->description, descr, sz) >= sz);
1281 fmt->flags = flags;
1282}
1283
be6c64e4
HV		 1284static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
1285 struct file *file, void *fh, void *arg)
1286{
1287 struct v4l2_fmtdesc *p = arg;
4b20259f 1288 struct video_device *vfd = video_devdata(file);
ce71bbc9
HV		 1289 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1290 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
4b20259f
HV		 1291 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1292 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
ba300204 1293 int ret = -EINVAL;
be6c64e4
HV		 1294
1295 switch (p->type) {
1296 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
ce71bbc9 1297 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_cap))
be6c64e4 1298 break;
ba300204
HV		 1299 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
1300 break;
be6c64e4 1301 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
ce71bbc9 1302 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_cap_mplane))
be6c64e4 1303 break;
ba300204
HV		 1304 ret = ops->vidioc_enum_fmt_vid_cap_mplane(file, fh, arg);
1305 break;
be6c64e4 1306 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
ce71bbc9 1307 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_overlay))
be6c64e4 1308 break;
ba300204
HV		 1309 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
1310 break;
be6c64e4 1311 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
ce71bbc9 1312 if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out))
be6c64e4 1313 break;
ba300204
HV		 1314 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg);
1315 break;
be6c64e4 1316 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
ce71bbc9 1317 if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out_mplane))
be6c64e4 1318 break;
ba300204
HV		 1319 ret = ops->vidioc_enum_fmt_vid_out_mplane(file, fh, arg);
1320 break;
582c52cb 1321 case V4L2_BUF_TYPE_SDR_CAPTURE:
ce71bbc9 1322 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_enum_fmt_sdr_cap))
582c52cb 1323 break;
ba300204
HV		 1324 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg);
1325 break;
be6c64e4 1326 }
ba300204
HV		 1327 if (ret == 0)
1328 v4l_fill_fmtdesc(p);
1329 return ret;
be6c64e4
HV		 1330}
1331
1332static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
1333 struct file *file, void *fh, void *arg)
1334{
1335 struct v4l2_format *p = arg;
4b20259f
HV		 1336 struct video_device *vfd = video_devdata(file);
1337 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
582c52cb 1338 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
4b20259f
HV		 1339 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1340 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
d52e2381
LP		 1341 int ret;
1342
e5ce558a
HV		 1343 /*
1344 * fmt can't be cleared for these overlay types due to the 'clips'
1345 * 'clipcount' and 'bitmap' pointers in struct v4l2_window.
1346 * Those are provided by the user. So handle these two overlay types
1347 * first, and then just do a simple memset for the other types.
1348 */
1349 switch (p->type) {
1350 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1351 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: {
4d1afa51 1352 struct v4l2_clip __user *clips = p->fmt.win.clips;
e5ce558a 1353 u32 clipcount = p->fmt.win.clipcount;
4d1afa51 1354 void __user *bitmap = p->fmt.win.bitmap;
e5ce558a
HV		 1355
1356 memset(&p->fmt, 0, sizeof(p->fmt));
1357 p->fmt.win.clips = clips;
1358 p->fmt.win.clipcount = clipcount;
1359 p->fmt.win.bitmap = bitmap;
1360 break;
1361 }
1362 default:
1363 memset(&p->fmt, 0, sizeof(p->fmt));
1364 break;
1365 }
1366
be6c64e4
HV		 1367 switch (p->type) {
1368 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1369 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap))
be6c64e4 1370 break;
48f2650a 1371 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
d52e2381 1372 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg);
48f2650a 1373 /* just in case the driver zeroed it again */
d52e2381
LP		 1374 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1375 return ret;
be6c64e4 1376 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1377 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap_mplane))
be6c64e4
HV		 1378 break;
1379 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
1380 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1381 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_overlay))
be6c64e4
HV		 1382 break;
1383 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
4b20259f
HV		 1384 case V4L2_BUF_TYPE_VBI_CAPTURE:
1385 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_vbi_cap))
1386 break;
1387 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
1388 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1389 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_cap))
1390 break;
1391 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1392 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1393 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out))
be6c64e4 1394 break;
48f2650a 1395 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
d52e2381 1396 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg);
48f2650a 1397 /* just in case the driver zeroed it again */
d52e2381
LP		 1398 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1399 return ret;
be6c64e4 1400 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1401 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_mplane))
be6c64e4
HV		 1402 break;
1403 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
1404 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 1405 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_overlay))
be6c64e4
HV		 1406 break;
1407 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1408 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 1409 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_vbi_out))
be6c64e4
HV		 1410 break;
1411 return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
be6c64e4 1412 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 1413 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_out))
be6c64e4
HV		 1414 break;
1415 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
582c52cb
AP		 1416 case V4L2_BUF_TYPE_SDR_CAPTURE:
1417 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_g_fmt_sdr_cap))
1418 break;
1419 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg);
be6c64e4
HV		 1420 }
1421 return -EINVAL;
1422}
1423
1424static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
1425 struct file *file, void *fh, void *arg)
1426{
1427 struct v4l2_format *p = arg;
4b20259f
HV		 1428 struct video_device *vfd = video_devdata(file);
1429 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
582c52cb 1430 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
4b20259f
HV		 1431 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1432 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
48f2650a 1433 int ret;
be6c64e4 1434
d52e2381
LP		 1435 v4l_sanitize_format(p);
1436
be6c64e4
HV		 1437 switch (p->type) {
1438 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1439 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap))
be6c64e4
HV		 1440 break;
1441 CLEAR_AFTER_FIELD(p, fmt.pix);
48f2650a
HV		 1442 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg);
1443 /* just in case the driver zeroed it again */
1444 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1445 return ret;
be6c64e4 1446 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1447 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap_mplane))
be6c64e4
HV		 1448 break;
1449 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1450 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
1451 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1452 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_overlay))
be6c64e4
HV		 1453 break;
1454 CLEAR_AFTER_FIELD(p, fmt.win);
1455 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
4b20259f
HV		 1456 case V4L2_BUF_TYPE_VBI_CAPTURE:
1457 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_vbi_cap))
1458 break;
1459 CLEAR_AFTER_FIELD(p, fmt.vbi);
1460 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
1461 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1462 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_cap))
1463 break;
1464 CLEAR_AFTER_FIELD(p, fmt.sliced);
1465 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1466 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1467 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out))
be6c64e4
HV		 1468 break;
1469 CLEAR_AFTER_FIELD(p, fmt.pix);
48f2650a
HV		 1470 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg);
1471 /* just in case the driver zeroed it again */
1472 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1473 return ret;
be6c64e4 1474 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1475 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_mplane))
be6c64e4
HV		 1476 break;
1477 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1478 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
1479 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 1480 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_overlay))
be6c64e4
HV		 1481 break;
1482 CLEAR_AFTER_FIELD(p, fmt.win);
1483 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1484 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 1485 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_vbi_out))
be6c64e4
HV		 1486 break;
1487 CLEAR_AFTER_FIELD(p, fmt.vbi);
1488 return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
be6c64e4 1489 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 1490 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_out))
be6c64e4
HV		 1491 break;
1492 CLEAR_AFTER_FIELD(p, fmt.sliced);
1493 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
582c52cb
AP		 1494 case V4L2_BUF_TYPE_SDR_CAPTURE:
1495 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_s_fmt_sdr_cap))
1496 break;
1497 CLEAR_AFTER_FIELD(p, fmt.sdr);
1498 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg);
be6c64e4
HV		 1499 }
1500 return -EINVAL;
1501}
1502
1503static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
1504 struct file *file, void *fh, void *arg)
1505{
1506 struct v4l2_format *p = arg;
4b20259f
HV		 1507 struct video_device *vfd = video_devdata(file);
1508 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
582c52cb 1509 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
4b20259f
HV		 1510 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1511 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
48f2650a 1512 int ret;
be6c64e4 1513
d52e2381
LP		 1514 v4l_sanitize_format(p);
1515
be6c64e4
HV		 1516 switch (p->type) {
1517 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1518 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap))
be6c64e4
HV		 1519 break;
1520 CLEAR_AFTER_FIELD(p, fmt.pix);
48f2650a
HV		 1521 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg);
1522 /* just in case the driver zeroed it again */
1523 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1524 return ret;
be6c64e4 1525 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1526 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap_mplane))
be6c64e4
HV		 1527 break;
1528 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1529 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
1530 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1531 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_overlay))
be6c64e4
HV		 1532 break;
1533 CLEAR_AFTER_FIELD(p, fmt.win);
1534 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
4b20259f
HV		 1535 case V4L2_BUF_TYPE_VBI_CAPTURE:
1536 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_vbi_cap))
1537 break;
1538 CLEAR_AFTER_FIELD(p, fmt.vbi);
1539 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
1540 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1541 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_cap))
1542 break;
1543 CLEAR_AFTER_FIELD(p, fmt.sliced);
1544 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1545 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1546 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out))
be6c64e4
HV		 1547 break;
1548 CLEAR_AFTER_FIELD(p, fmt.pix);
48f2650a
HV		 1549 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg);
1550 /* just in case the driver zeroed it again */
1551 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1552 return ret;
be6c64e4 1553 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1554 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_mplane))
be6c64e4
HV		 1555 break;
1556 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1557 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
1558 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 1559 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_overlay))
be6c64e4
HV		 1560 break;
1561 CLEAR_AFTER_FIELD(p, fmt.win);
1562 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1563 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 1564 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_vbi_out))
be6c64e4
HV		 1565 break;
1566 CLEAR_AFTER_FIELD(p, fmt.vbi);
1567 return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
be6c64e4 1568 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 1569 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_out))
be6c64e4
HV		 1570 break;
1571 CLEAR_AFTER_FIELD(p, fmt.sliced);
1572 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
582c52cb
AP		 1573 case V4L2_BUF_TYPE_SDR_CAPTURE:
1574 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_try_fmt_sdr_cap))
1575 break;
1576 CLEAR_AFTER_FIELD(p, fmt.sdr);
1577 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg);
be6c64e4
HV		 1578 }
1579 return -EINVAL;
1580}
1581
e325b244
HV		 1582static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
1583 struct file *file, void *fh, void *arg)
1584{
1585 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
1586}
1587
1588static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
1589 struct file *file, void *fh, void *arg)
1590{
1591 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
1592}
1593
4b1e2e4d
HV		 1594static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,
1595 struct file *file, void *fh, void *arg)
1596{
1597 struct video_device *vfd = video_devdata(file);
1598 struct v4l2_tuner *p = arg;
82b655bf 1599 int err;
4b1e2e4d
HV		 1600
1601 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1602 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
82b655bf
HV		 1603 err = ops->vidioc_g_tuner(file, fh, p);
1604 if (!err)
1605 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1606 return err;
4b1e2e4d
HV		 1607}
1608
1609static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
1610 struct file *file, void *fh, void *arg)
1611{
1612 struct video_device *vfd = video_devdata(file);
1613 struct v4l2_tuner *p = arg;
1614
1615 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1616 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1617 return ops->vidioc_s_tuner(file, fh, p);
1618}
1619
82b655bf
HV		 1620static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,
1621 struct file *file, void *fh, void *arg)
1622{
1623 struct v4l2_modulator *p = arg;
1624 int err;
1625
1626 err = ops->vidioc_g_modulator(file, fh, p);
1627 if (!err)
1628 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1629 return err;
1630}
1631
4b1e2e4d
HV		 1632static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
1633 struct file *file, void *fh, void *arg)
1634{
1635 struct video_device *vfd = video_devdata(file);
1636 struct v4l2_frequency *p = arg;
1637
84099a28
AP		 1638 if (vfd->vfl_type == VFL_TYPE_SDR)
1639 p->type = V4L2_TUNER_ADC;
1640 else
1641 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1642 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
4b1e2e4d
HV		 1643 return ops->vidioc_g_frequency(file, fh, p);
1644}
1645
1646static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
1647 struct file *file, void *fh, void *arg)
1648{
1649 struct video_device *vfd = video_devdata(file);
b530a447 1650 const struct v4l2_frequency *p = arg;
4b1e2e4d
HV		 1651 enum v4l2_tuner_type type;
1652
84099a28
AP		 1653 if (vfd->vfl_type == VFL_TYPE_SDR) {
1654 if (p->type != V4L2_TUNER_ADC && p->type != V4L2_TUNER_RF)
1655 return -EINVAL;
1656 } else {
1657 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1658 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1659 if (type != p->type)
1660 return -EINVAL;
1661 }
4b1e2e4d
HV		 1662 return ops->vidioc_s_frequency(file, fh, p);
1663}
1664
1665static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
1666 struct file *file, void *fh, void *arg)
1667{
1668 struct video_device *vfd = video_devdata(file);
1669 struct v4l2_standard *p = arg;
1670 v4l2_std_id id = vfd->tvnorms, curr_id = 0;
1671 unsigned int index = p->index, i, j = 0;
1672 const char *descr = "";
1673
a5338190
HV		 1674 /* Return -ENODATA if the tvnorms for the current input
1675 or output is 0, meaning that it doesn't support this API. */
1676 if (id == 0)
1677 return -ENODATA;
1678
4b1e2e4d
HV		 1679 /* Return norm array in a canonical way */
1680 for (i = 0; i <= index && id; i++) {
1681 /* last std value in the standards array is 0, so this
1682 while always ends there since (id & 0) == 0. */
1683 while ((id & standards[j].std) != standards[j].std)
1684 j++;
1685 curr_id = standards[j].std;
1686 descr = standards[j].descr;
1687 j++;
1688 if (curr_id == 0)
1689 break;
1690 if (curr_id != V4L2_STD_PAL &&
1691 curr_id != V4L2_STD_SECAM &&
1692 curr_id != V4L2_STD_NTSC)
1693 id &= ~curr_id;
1694 }
1695 if (i <= index)
1696 return -EINVAL;
1697
1698 v4l2_video_std_construct(p, curr_id, descr);
1699 return 0;
1700}
1701
4b1e2e4d
HV		 1702static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
1703 struct file *file, void *fh, void *arg)
1704{
1705 struct video_device *vfd = video_devdata(file);
314527ac 1706 v4l2_std_id id = *(v4l2_std_id *)arg, norm;
4b1e2e4d 1707
314527ac 1708 norm = id & vfd->tvnorms;
4b1e2e4d
HV		 1709 if (vfd->tvnorms && !norm) /* Check if std is supported */
1710 return -EINVAL;
1711
1712 /* Calls the specific handler */
ca371575 1713 return ops->vidioc_s_std(file, fh, norm);
4b1e2e4d
HV		 1714}
1715
1716static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
1717 struct file *file, void *fh, void *arg)
1718{
1719 struct video_device *vfd = video_devdata(file);
1720 v4l2_std_id *p = arg;
1721
1722 /*
1a2c6866
HV		 1723 * If no signal is detected, then the driver should return
1724 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with
1725 * any standards that do not apply removed.
1726 *
4b1e2e4d
HV		 1727 * This means that tuners, audio and video decoders can join
1728 * their efforts to improve the standards detection.
1729 */
1730 *p = vfd->tvnorms;
1731 return ops->vidioc_querystd(file, fh, arg);
1732}
1733
1734static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
1735 struct file *file, void *fh, void *arg)
1736{
1737 struct video_device *vfd = video_devdata(file);
1738 struct v4l2_hw_freq_seek *p = arg;
1739 enum v4l2_tuner_type type;
1740
84099a28
AP		 1741 /* s_hw_freq_seek is not supported for SDR for now */
1742 if (vfd->vfl_type == VFL_TYPE_SDR)
1743 return -EINVAL;
1744
4b1e2e4d
HV		 1745 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1746 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1747 if (p->type != type)
1748 return -EINVAL;
1749 return ops->vidioc_s_hw_freq_seek(file, fh, p);
1750}
1751
737c097b
HV		 1752static int v4l_overlay(const struct v4l2_ioctl_ops *ops,
1753 struct file *file, void *fh, void *arg)
1754{
1755 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg);
1756}
1757
eb3728ed
HV		 1758static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,
1759 struct file *file, void *fh, void *arg)
1760{
1761 struct v4l2_requestbuffers *p = arg;
4b20259f 1762 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1763
1764 if (ret)
1765 return ret;
1766
633c98e5 1767 CLEAR_AFTER_FIELD(p, memory);
eb3728ed
HV		 1768
1769 return ops->vidioc_reqbufs(file, fh, p);
1770}
1771
1772static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,
1773 struct file *file, void *fh, void *arg)
1774{
1775 struct v4l2_buffer *p = arg;
4b20259f 1776 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1777
1778 return ret ? ret : ops->vidioc_querybuf(file, fh, p);
1779}
1780
1781static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,
1782 struct file *file, void *fh, void *arg)
1783{
1784 struct v4l2_buffer *p = arg;
4b20259f 1785 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1786
1787 return ret ? ret : ops->vidioc_qbuf(file, fh, p);
1788}
1789
1790static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,
1791 struct file *file, void *fh, void *arg)
1792{
1793 struct v4l2_buffer *p = arg;
4b20259f 1794 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1795
1796 return ret ? ret : ops->vidioc_dqbuf(file, fh, p);
1797}
1798
1799static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
1800 struct file *file, void *fh, void *arg)
1801{
1802 struct v4l2_create_buffers *create = arg;
4b20259f 1803 int ret = check_fmt(file, create->format.type);
eb3728ed 1804
d52e2381
LP		 1805 if (ret)
1806 return ret;
1807
1808 v4l_sanitize_format(&create->format);
1809
1810 ret = ops->vidioc_create_bufs(file, fh, create);
1811
1812 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1813 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1814 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1815
1816 return ret;
eb3728ed
HV		 1817}
1818
1819static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
1820 struct file *file, void *fh, void *arg)
1821{
1822 struct v4l2_buffer *b = arg;
4b20259f 1823 int ret = check_fmt(file, b->type);
eb3728ed
HV		 1824
1825 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
1826}
1827
1828static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
1829 struct file *file, void *fh, void *arg)
1830{
eb3728ed
HV		 1831 struct v4l2_streamparm *p = arg;
1832 v4l2_std_id std;
4b20259f 1833 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1834
1835 if (ret)
1836 return ret;
1837 if (ops->vidioc_g_parm)
1838 return ops->vidioc_g_parm(file, fh, p);
eb3728ed
HV		 1839 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1840 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1841 return -EINVAL;
1842 p->parm.capture.readbuffers = 2;
ca371575 1843 ret = ops->vidioc_g_std(file, fh, &std);
eb3728ed 1844 if (ret == 0)
ca371575 1845 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe);
eb3728ed
HV		 1846 return ret;
1847}
1848
1849static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
1850 struct file *file, void *fh, void *arg)
1851{
1852 struct v4l2_streamparm *p = arg;
4b20259f 1853 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1854
1855 return ret ? ret : ops->vidioc_s_parm(file, fh, p);
1856}
1857
efbceecd
HV		 1858static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,
1859 struct file *file, void *fh, void *arg)
1860{
1861 struct video_device *vfd = video_devdata(file);
1862 struct v4l2_queryctrl *p = arg;
7a3ed2d9
HV		 1863 struct v4l2_fh *vfh =
1864 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1865
1866 if (vfh && vfh->ctrl_handler)
1867 return v4l2_queryctrl(vfh->ctrl_handler, p);
1868 if (vfd->ctrl_handler)
1869 return v4l2_queryctrl(vfd->ctrl_handler, p);
1870 if (ops->vidioc_queryctrl)
1871 return ops->vidioc_queryctrl(file, fh, p);
1872 return -ENOTTY;
1873}
1874
e6bee368
HV		 1875static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops,
1876 struct file *file, void *fh, void *arg)
1877{
1878 struct video_device *vfd = video_devdata(file);
1879 struct v4l2_query_ext_ctrl *p = arg;
1880 struct v4l2_fh *vfh =
1881 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1882
1883 if (vfh && vfh->ctrl_handler)
1884 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p);
1885 if (vfd->ctrl_handler)
1886 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p);
1887 if (ops->vidioc_query_ext_ctrl)
1888 return ops->vidioc_query_ext_ctrl(file, fh, p);
1889 return -ENOTTY;
1890}
1891
efbceecd
HV		 1892static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,
1893 struct file *file, void *fh, void *arg)
1894{
1895 struct video_device *vfd = video_devdata(file);
1896 struct v4l2_querymenu *p = arg;
7a3ed2d9
HV		 1897 struct v4l2_fh *vfh =
1898 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1899
1900 if (vfh && vfh->ctrl_handler)
1901 return v4l2_querymenu(vfh->ctrl_handler, p);
1902 if (vfd->ctrl_handler)
1903 return v4l2_querymenu(vfd->ctrl_handler, p);
1904 if (ops->vidioc_querymenu)
1905 return ops->vidioc_querymenu(file, fh, p);
1906 return -ENOTTY;
1907}
1908
1909static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops,
1910 struct file *file, void *fh, void *arg)
1911{
1912 struct video_device *vfd = video_devdata(file);
1913 struct v4l2_control *p = arg;
7a3ed2d9
HV		 1914 struct v4l2_fh *vfh =
1915 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1916 struct v4l2_ext_controls ctrls;
1917 struct v4l2_ext_control ctrl;
1918
1919 if (vfh && vfh->ctrl_handler)
1920 return v4l2_g_ctrl(vfh->ctrl_handler, p);
1921 if (vfd->ctrl_handler)
1922 return v4l2_g_ctrl(vfd->ctrl_handler, p);
1923 if (ops->vidioc_g_ctrl)
1924 return ops->vidioc_g_ctrl(file, fh, p);
1925 if (ops->vidioc_g_ext_ctrls == NULL)
1926 return -ENOTTY;
1927
1928 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1929 ctrls.count = 1;
1930 ctrls.controls = &ctrl;
1931 ctrl.id = p->id;
1932 ctrl.value = p->value;
1933 if (check_ext_ctrls(&ctrls, 1)) {
1934 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
1935
1936 if (ret == 0)
1937 p->value = ctrl.value;
1938 return ret;
1939 }
1940 return -EINVAL;
1941}
1942
1943static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,
1944 struct file *file, void *fh, void *arg)
1945{
1946 struct video_device *vfd = video_devdata(file);
1947 struct v4l2_control *p = arg;
7a3ed2d9
HV		 1948 struct v4l2_fh *vfh =
1949 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1950 struct v4l2_ext_controls ctrls;
1951 struct v4l2_ext_control ctrl;
1952
1953 if (vfh && vfh->ctrl_handler)
1954 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
1955 if (vfd->ctrl_handler)
1956 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
1957 if (ops->vidioc_s_ctrl)
1958 return ops->vidioc_s_ctrl(file, fh, p);
1959 if (ops->vidioc_s_ext_ctrls == NULL)
1960 return -ENOTTY;
1961
1962 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1963 ctrls.count = 1;
1964 ctrls.controls = &ctrl;
1965 ctrl.id = p->id;
1966 ctrl.value = p->value;
1967 if (check_ext_ctrls(&ctrls, 1))
1968 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
1969 return -EINVAL;
1970}
1971
1972static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1973 struct file *file, void *fh, void *arg)
1974{
1975 struct video_device *vfd = video_devdata(file);
1976 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 1977 struct v4l2_fh *vfh =
1978 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1979
1980 p->error_idx = p->count;
1981 if (vfh && vfh->ctrl_handler)
1982 return v4l2_g_ext_ctrls(vfh->ctrl_handler, p);
1983 if (vfd->ctrl_handler)
1984 return v4l2_g_ext_ctrls(vfd->ctrl_handler, p);
1985 if (ops->vidioc_g_ext_ctrls == NULL)
1986 return -ENOTTY;
1987 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :
1988 -EINVAL;
1989}
1990
1991static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1992 struct file *file, void *fh, void *arg)
1993{
1994 struct video_device *vfd = video_devdata(file);
1995 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 1996 struct v4l2_fh *vfh =
1997 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1998
1999 p->error_idx = p->count;
2000 if (vfh && vfh->ctrl_handler)
2001 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, p);
2002 if (vfd->ctrl_handler)
2003 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, p);
2004 if (ops->vidioc_s_ext_ctrls == NULL)
2005 return -ENOTTY;
2006 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :
2007 -EINVAL;
2008}
2009
2010static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2011 struct file *file, void *fh, void *arg)
2012{
2013 struct video_device *vfd = video_devdata(file);
2014 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 2015 struct v4l2_fh *vfh =
2016 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 2017
2018 p->error_idx = p->count;
2019 if (vfh && vfh->ctrl_handler)
2020 return v4l2_try_ext_ctrls(vfh->ctrl_handler, p);
2021 if (vfd->ctrl_handler)
2022 return v4l2_try_ext_ctrls(vfd->ctrl_handler, p);
2023 if (ops->vidioc_try_ext_ctrls == NULL)
2024 return -ENOTTY;
2025 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :
2026 -EINVAL;
2027}
2028
d84f2d94
HV		 2029static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
2030 struct file *file, void *fh, void *arg)
2031{
2032 struct v4l2_crop *p = arg;
2033 struct v4l2_selection s = {
2034 .type = p->type,
2035 };
2036 int ret;
2037
2038 if (ops->vidioc_g_crop)
2039 return ops->vidioc_g_crop(file, fh, p);
2040 /* simulate capture crop using selection api */
2041
2042 /* crop means compose for output devices */
2043 if (V4L2_TYPE_IS_OUTPUT(p->type))
2044 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
2045 else
2046 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
2047
2048 ret = ops->vidioc_g_selection(file, fh, &s);
2049
2050 /* copying results to old structure on success */
2051 if (!ret)
2052 p->c = s.r;
2053 return ret;
2054}
2055
2056static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
2057 struct file *file, void *fh, void *arg)
2058{
2059 struct v4l2_crop *p = arg;
2060 struct v4l2_selection s = {
2061 .type = p->type,
2062 .r = p->c,
2063 };
2064
2065 if (ops->vidioc_s_crop)
2066 return ops->vidioc_s_crop(file, fh, p);
2067 /* simulate capture crop using selection api */
2068
2069 /* crop means compose for output devices */
2070 if (V4L2_TYPE_IS_OUTPUT(p->type))
2071 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
2072 else
2073 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
2074
2075 return ops->vidioc_s_selection(file, fh, &s);
2076}
2077
2078static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
2079 struct file *file, void *fh, void *arg)
2080{
2081 struct v4l2_cropcap *p = arg;
d84f2d94 2082
9409945c
HV		 2083 if (ops->vidioc_g_selection) {
2084 struct v4l2_selection s = { .type = p->type };
2085 int ret;
d84f2d94 2086
9409945c
HV		 2087 /* obtaining bounds */
2088 if (V4L2_TYPE_IS_OUTPUT(p->type))
2089 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
2090 else
2091 s.target = V4L2_SEL_TGT_CROP_BOUNDS;
d84f2d94 2092
9409945c
HV		 2093 ret = ops->vidioc_g_selection(file, fh, &s);
2094 if (ret)
2095 return ret;
2096 p->bounds = s.r;
d84f2d94 2097
9409945c
HV		 2098 /* obtaining defrect */
2099 if (V4L2_TYPE_IS_OUTPUT(p->type))
2100 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
2101 else
2102 s.target = V4L2_SEL_TGT_CROP_DEFAULT;
d84f2d94 2103
9409945c
HV		 2104 ret = ops->vidioc_g_selection(file, fh, &s);
2105 if (ret)
2106 return ret;
2107 p->defrect = s.r;
2108 }
d84f2d94
HV		 2109
2110 /* setting trivial pixelaspect */
2111 p->pixelaspect.numerator = 1;
2112 p->pixelaspect.denominator = 1;
9409945c
HV		 2113
2114 if (ops->vidioc_cropcap)
2115 return ops->vidioc_cropcap(file, fh, p);
2116
d84f2d94
HV		 2117 return 0;
2118}
2119
f16f77b0
HV		 2120static int v4l_log_status(const struct v4l2_ioctl_ops *ops,
2121 struct file *file, void *fh, void *arg)
2122{
2123 struct video_device *vfd = video_devdata(file);
2124 int ret;
2125
2126 if (vfd->v4l2_dev)
2127 pr_info("%s: ================= START STATUS =================\n",
2128 vfd->v4l2_dev->name);
2129 ret = ops->vidioc_log_status(file, fh);
2130 if (vfd->v4l2_dev)
2131 pr_info("%s: ================== END STATUS ==================\n",
2132 vfd->v4l2_dev->name);
2133 return ret;
2134}
2135
2136static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
2137 struct file *file, void *fh, void *arg)
2138{
2139#ifdef CONFIG_VIDEO_ADV_DEBUG
2140 struct v4l2_dbg_register *p = arg;
79b0c640
HV		 2141 struct video_device *vfd = video_devdata(file);
2142 struct v4l2_subdev *sd;
2143 int idx = 0;
f16f77b0
HV		 2144
2145 if (!capable(CAP_SYS_ADMIN))
2146 return -EPERM;
3eef2510 2147 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
79b0c640
HV		 2148 if (vfd->v4l2_dev == NULL)
2149 return -EINVAL;
3eef2510
HV		 2150 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2151 if (p->match.addr == idx++)
79b0c640 2152 return v4l2_subdev_call(sd, core, g_register, p);
79b0c640
HV		 2153 return -EINVAL;
2154 }
191b79b0
HV		 2155 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2156 (ops->vidioc_g_chip_info || p->match.addr == 0))
79b0c640
HV		 2157 return ops->vidioc_g_register(file, fh, p);
2158 return -EINVAL;
f16f77b0
HV		 2159#else
2160 return -ENOTTY;
2161#endif
2162}
2163
2164static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
2165 struct file *file, void *fh, void *arg)
2166{
2167#ifdef CONFIG_VIDEO_ADV_DEBUG
977ba3b1 2168 const struct v4l2_dbg_register *p = arg;
79b0c640
HV		 2169 struct video_device *vfd = video_devdata(file);
2170 struct v4l2_subdev *sd;
2171 int idx = 0;
f16f77b0
HV		 2172
2173 if (!capable(CAP_SYS_ADMIN))
2174 return -EPERM;
3eef2510 2175 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
79b0c640
HV		 2176 if (vfd->v4l2_dev == NULL)
2177 return -EINVAL;
3eef2510
HV		 2178 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2179 if (p->match.addr == idx++)
79b0c640 2180 return v4l2_subdev_call(sd, core, s_register, p);
79b0c640
HV		 2181 return -EINVAL;
2182 }
191b79b0
HV		 2183 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2184 (ops->vidioc_g_chip_info || p->match.addr == 0))
79b0c640
HV		 2185 return ops->vidioc_s_register(file, fh, p);
2186 return -EINVAL;
f16f77b0
HV		 2187#else
2188 return -ENOTTY;
2189#endif
2190}
2191
96b03d2a 2192static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,
79b0c640
HV		 2193 struct file *file, void *fh, void *arg)
2194{
cd634f1b 2195#ifdef CONFIG_VIDEO_ADV_DEBUG
79b0c640 2196 struct video_device *vfd = video_devdata(file);
96b03d2a 2197 struct v4l2_dbg_chip_info *p = arg;
79b0c640
HV		 2198 struct v4l2_subdev *sd;
2199 int idx = 0;
2200
2201 switch (p->match.type) {
2202 case V4L2_CHIP_MATCH_BRIDGE:
79b0c640
HV		 2203 if (ops->vidioc_s_register)
2204 p->flags |= V4L2_CHIP_FL_WRITABLE;
2205 if (ops->vidioc_g_register)
2206 p->flags |= V4L2_CHIP_FL_READABLE;
1c1d86a1 2207 strlcpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));
96b03d2a
HV		 2208 if (ops->vidioc_g_chip_info)
2209 return ops->vidioc_g_chip_info(file, fh, arg);
0f0fe4b9
HV		 2210 if (p->match.addr)
2211 return -EINVAL;
79b0c640
HV		 2212 return 0;
2213
3eef2510 2214 case V4L2_CHIP_MATCH_SUBDEV:
79b0c640
HV		 2215 if (vfd->v4l2_dev == NULL)
2216 break;
2217 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {
3eef2510
HV		 2218 if (p->match.addr != idx++)
2219 continue;
2220 if (sd->ops->core && sd->ops->core->s_register)
2221 p->flags |= V4L2_CHIP_FL_WRITABLE;
2222 if (sd->ops->core && sd->ops->core->g_register)
2223 p->flags |= V4L2_CHIP_FL_READABLE;
2224 strlcpy(p->name, sd->name, sizeof(p->name));
2225 return 0;
79b0c640
HV		 2226 }
2227 break;
2228 }
2229 return -EINVAL;
cd634f1b
HV		 2230#else
2231 return -ENOTTY;
2232#endif
79b0c640
HV		 2233}
2234
458aa4a6
HV		 2235static int v4l_dqevent(const struct v4l2_ioctl_ops *ops,
2236 struct file *file, void *fh, void *arg)
2237{
2238 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK);
2239}
2240
2241static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,
2242 struct file *file, void *fh, void *arg)
2243{
2244 return ops->vidioc_subscribe_event(fh, arg);
2245}
2246
2247static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,
2248 struct file *file, void *fh, void *arg)
2249{
2250 return ops->vidioc_unsubscribe_event(fh, arg);
2251}
2252
2253static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,
2254 struct file *file, void *fh, void *arg)
2255{
2256 struct v4l2_sliced_vbi_cap *p = arg;
4b20259f
HV		 2257 int ret = check_fmt(file, p->type);
2258
2259 if (ret)
2260 return ret;
458aa4a6
HV		 2261
2262 /* Clear up to type, everything after type is zeroed already */
2263 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
2264
2265 return ops->vidioc_g_sliced_vbi_cap(file, fh, p);
2266}
2267
82b655bf
HV		 2268static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
2269 struct file *file, void *fh, void *arg)
2270{
2271 struct video_device *vfd = video_devdata(file);
2272 struct v4l2_frequency_band *p = arg;
2273 enum v4l2_tuner_type type;
2274 int err;
2275
84099a28
AP		 2276 if (vfd->vfl_type == VFL_TYPE_SDR) {
2277 if (p->type != V4L2_TUNER_ADC && p->type != V4L2_TUNER_RF)
2278 return -EINVAL;
2279 type = p->type;
2280 } else {
2281 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2282 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2283 if (type != p->type)
2284 return -EINVAL;
2285 }
a7f404af
HV		 2286 if (ops->vidioc_enum_freq_bands) {
2287 err = ops->vidioc_enum_freq_bands(file, fh, p);
2288 if (err != -ENOTTY)
2289 return err;
2290 }
73f35418 2291 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) {
82b655bf
HV		 2292 struct v4l2_tuner t = {
2293 .index = p->tuner,
2294 .type = type,
2295 };
2296
aa4d9b53
HV		 2297 if (p->index)
2298 return -EINVAL;
82b655bf
HV		 2299 err = ops->vidioc_g_tuner(file, fh, &t);
2300 if (err)
2301 return err;
2302 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2303 p->rangelow = t.rangelow;
2304 p->rangehigh = t.rangehigh;
2305 p->modulation = (type == V4L2_TUNER_RADIO) ?
2306 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2307 return 0;
2308 }
73f35418 2309 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) {
82b655bf
HV		 2310 struct v4l2_modulator m = {
2311 .index = p->tuner,
2312 };
2313
2314 if (type != V4L2_TUNER_RADIO)
2315 return -EINVAL;
aa4d9b53
HV		 2316 if (p->index)
2317 return -EINVAL;
82b655bf
HV		 2318 err = ops->vidioc_g_modulator(file, fh, &m);
2319 if (err)
2320 return err;
2321 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2322 p->rangelow = m.rangelow;
2323 p->rangehigh = m.rangehigh;
2324 p->modulation = (type == V4L2_TUNER_RADIO) ?
2325 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2326 return 0;
2327 }
2328 return -ENOTTY;
2329}
2330
4839e6c2
HV		 2331struct v4l2_ioctl_info {
2332 unsigned int ioctl;
27cd2aba 2333 u32 flags;
4839e6c2 2334 const char * const name;
86748f35
HV		 2335 union {
2336 u32 offset;
2337 int (*func)(const struct v4l2_ioctl_ops *ops,
2338 struct file *file, void *fh, void *p);
26ddcbcc 2339 } u;
86748f35 2340 void (*debug)(const void *arg, bool write_only);
4839e6c2
HV		 2341};
2342
2343/* This control needs a priority check */
2344#define INFO_FL_PRIO (1 << 0)
2345/* This control can be valid if the filehandle passes a control handler. */
2346#define INFO_FL_CTRL (1 << 1)
86748f35
HV		 2347/* This is a standard ioctl, no need for special code */
2348#define INFO_FL_STD (1 << 2)
2349/* This is ioctl has its own function */
2350#define INFO_FL_FUNC (1 << 3)
5a5adf6b
HV		 2351/* Queuing ioctl */
2352#define INFO_FL_QUEUE (1 << 4)
27cd2aba
HV		 2353/* Zero struct from after the field to the end */
2354#define INFO_FL_CLEAR(v4l2_struct, field) \
2355 ((offsetof(struct v4l2_struct, field) + \
2356 sizeof(((struct v4l2_struct *)0)->field)) << 16)
2357#define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
4839e6c2 2358
86748f35
HV		 2359#define IOCTL_INFO_STD(_ioctl, _vidioc, _debug, _flags) \
2360 [_IOC_NR(_ioctl)] = { \
2361 .ioctl = _ioctl, \
2362 .flags = _flags | INFO_FL_STD, \
2363 .name = #_ioctl, \
26ddcbcc 2364 .u.offset = offsetof(struct v4l2_ioctl_ops, _vidioc), \
86748f35
HV		 2365 .debug = _debug, \
2366 }
2367
2368#define IOCTL_INFO_FNC(_ioctl, _func, _debug, _flags) \
2369 [_IOC_NR(_ioctl)] = { \
2370 .ioctl = _ioctl, \
2371 .flags = _flags | INFO_FL_FUNC, \
2372 .name = #_ioctl, \
26ddcbcc 2373 .u.func = _func, \
86748f35
HV		 2374 .debug = _debug, \
2375 }
2376
4839e6c2 2377static struct v4l2_ioctl_info v4l2_ioctls[] = {
59076122 2378 IOCTL_INFO_FNC(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
be6c64e4 2379 IOCTL_INFO_FNC(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)),
e5ce558a 2380 IOCTL_INFO_FNC(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0),
be6c64e4 2381 IOCTL_INFO_FNC(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
5a5adf6b
HV		 2382 IOCTL_INFO_FNC(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2383 IOCTL_INFO_FNC(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
be6c64e4
HV		 2384 IOCTL_INFO_STD(VIDIOC_G_FBUF, vidioc_g_fbuf, v4l_print_framebuffer, 0),
2385 IOCTL_INFO_STD(VIDIOC_S_FBUF, vidioc_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
737c097b 2386 IOCTL_INFO_FNC(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO),
5a5adf6b 2387 IOCTL_INFO_FNC(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),
b799d09a 2388 IOCTL_INFO_STD(VIDIOC_EXPBUF, vidioc_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)),
5a5adf6b
HV		 2389 IOCTL_INFO_FNC(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),
2390 IOCTL_INFO_FNC(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2391 IOCTL_INFO_FNC(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
eb3728ed
HV		 2392 IOCTL_INFO_FNC(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
2393 IOCTL_INFO_FNC(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
ca371575 2394 IOCTL_INFO_STD(VIDIOC_G_STD, vidioc_g_std, v4l_print_std, 0),
4b1e2e4d
HV		 2395 IOCTL_INFO_FNC(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
2396 IOCTL_INFO_FNC(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
59076122 2397 IOCTL_INFO_FNC(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
efbceecd
HV		 2398 IOCTL_INFO_FNC(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
2399 IOCTL_INFO_FNC(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
4b1e2e4d
HV		 2400 IOCTL_INFO_FNC(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
2401 IOCTL_INFO_FNC(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
59076122
HV		 2402 IOCTL_INFO_STD(VIDIOC_G_AUDIO, vidioc_g_audio, v4l_print_audio, 0),
2403 IOCTL_INFO_STD(VIDIOC_S_AUDIO, vidioc_s_audio, v4l_print_audio, INFO_FL_PRIO),
efbceecd
HV		 2404 IOCTL_INFO_FNC(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
2405 IOCTL_INFO_FNC(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
59076122
HV		 2406 IOCTL_INFO_STD(VIDIOC_G_INPUT, vidioc_g_input, v4l_print_u32, 0),
2407 IOCTL_INFO_FNC(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
f9402a94
HV		 2408 IOCTL_INFO_STD(VIDIOC_G_EDID, vidioc_g_edid, v4l_print_edid, 0),
2409 IOCTL_INFO_STD(VIDIOC_S_EDID, vidioc_s_edid, v4l_print_edid, INFO_FL_PRIO),
59076122
HV		 2410 IOCTL_INFO_STD(VIDIOC_G_OUTPUT, vidioc_g_output, v4l_print_u32, 0),
2411 IOCTL_INFO_FNC(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
2412 IOCTL_INFO_FNC(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
2413 IOCTL_INFO_STD(VIDIOC_G_AUDOUT, vidioc_g_audout, v4l_print_audioout, 0),
2414 IOCTL_INFO_STD(VIDIOC_S_AUDOUT, vidioc_s_audout, v4l_print_audioout, INFO_FL_PRIO),
82b655bf 2415 IOCTL_INFO_FNC(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
4b1e2e4d
HV		 2416 IOCTL_INFO_STD(VIDIOC_S_MODULATOR, vidioc_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
2417 IOCTL_INFO_FNC(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
2418 IOCTL_INFO_FNC(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
d84f2d94
HV		 2419 IOCTL_INFO_FNC(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
2420 IOCTL_INFO_FNC(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
2421 IOCTL_INFO_FNC(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
865c4642
HV		 2422 IOCTL_INFO_STD(VIDIOC_G_SELECTION, vidioc_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)),
2423 IOCTL_INFO_STD(VIDIOC_S_SELECTION, vidioc_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)),
d806f2df
HV		 2424 IOCTL_INFO_STD(VIDIOC_G_JPEGCOMP, vidioc_g_jpegcomp, v4l_print_jpegcompression, 0),
2425 IOCTL_INFO_STD(VIDIOC_S_JPEGCOMP, vidioc_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
4b1e2e4d 2426 IOCTL_INFO_FNC(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
be6c64e4 2427 IOCTL_INFO_FNC(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
59076122
HV		 2428 IOCTL_INFO_STD(VIDIOC_ENUMAUDIO, vidioc_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
2429 IOCTL_INFO_STD(VIDIOC_ENUMAUDOUT, vidioc_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
d0547cba
HV		 2430 IOCTL_INFO_FNC(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
2431 IOCTL_INFO_FNC(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
458aa4a6 2432 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 2433 IOCTL_INFO_FNC(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
efbceecd
HV		 2434 IOCTL_INFO_FNC(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2435 IOCTL_INFO_FNC(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL),
9bc31633 2436 IOCTL_INFO_FNC(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
458aa4a6
HV		 2437 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMESIZES, vidioc_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
2438 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMEINTERVALS, vidioc_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
d806f2df
HV		 2439 IOCTL_INFO_STD(VIDIOC_G_ENC_INDEX, vidioc_g_enc_index, v4l_print_enc_idx, 0),
2440 IOCTL_INFO_STD(VIDIOC_ENCODER_CMD, vidioc_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2441 IOCTL_INFO_STD(VIDIOC_TRY_ENCODER_CMD, vidioc_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2442 IOCTL_INFO_STD(VIDIOC_DECODER_CMD, vidioc_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
2443 IOCTL_INFO_STD(VIDIOC_TRY_DECODER_CMD, vidioc_try_decoder_cmd, v4l_print_decoder_cmd, 0),
f16f77b0
HV		 2444 IOCTL_INFO_FNC(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
2445 IOCTL_INFO_FNC(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
4b1e2e4d 2446 IOCTL_INFO_FNC(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
efc626b0
HV		 2447 IOCTL_INFO_STD(VIDIOC_S_DV_TIMINGS, vidioc_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO),
2448 IOCTL_INFO_STD(VIDIOC_G_DV_TIMINGS, vidioc_g_dv_timings, v4l_print_dv_timings, 0),
458aa4a6
HV		 2449 IOCTL_INFO_FNC(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
2450 IOCTL_INFO_FNC(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
2451 IOCTL_INFO_FNC(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
5a5adf6b
HV		 2452 IOCTL_INFO_FNC(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2453 IOCTL_INFO_FNC(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
efc626b0
HV		 2454 IOCTL_INFO_STD(VIDIOC_ENUM_DV_TIMINGS, vidioc_enum_dv_timings, v4l_print_enum_dv_timings, 0),
2455 IOCTL_INFO_STD(VIDIOC_QUERY_DV_TIMINGS, vidioc_query_dv_timings, v4l_print_dv_timings, 0),
a1acb8f9 2456 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 2457 IOCTL_INFO_FNC(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
96b03d2a 2458 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 2459 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		 2460};
2461#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
2462
2463bool v4l2_is_known_ioctl(unsigned int cmd)
2464{
2465 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2466 return false;
2467 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
2468}
2469
5a5adf6b
HV		 2470struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd)
2471{
2472 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2473 return vdev->lock;
2474 if (test_bit(_IOC_NR(cmd), vdev->disable_locking))
2475 return NULL;
2476 if (vdev->queue && vdev->queue->lock &&
2477 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
2478 return vdev->queue->lock;
2479 return vdev->lock;
2480}
2481
4839e6c2
HV		 2482/* Common ioctl debug function. This function can be used by
2483 external ioctl messages as well as internal V4L ioctl */
4a085168 2484void v4l_printk_ioctl(const char *prefix, unsigned int cmd)
4839e6c2 2485{
86748f35 2486 const char *dir, *type;
4839e6c2 2487
4a085168
HV		 2488 if (prefix)
2489 printk(KERN_DEBUG "%s: ", prefix);
2490
4839e6c2
HV		 2491 switch (_IOC_TYPE(cmd)) {
2492 case 'd':
2493 type = "v4l2_int";
2494 break;
2495 case 'V':
2496 if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
2497 type = "v4l2";
2498 break;
2499 }
86748f35 2500 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
4839e6c2
HV		 2501 return;
2502 default:
2503 type = "unknown";
86748f35 2504 break;
4839e6c2
HV		 2505 }
2506
2507 switch (_IOC_DIR(cmd)) {
2508 case _IOC_NONE: dir = "--"; break;
2509 case _IOC_READ: dir = "r-"; break;
2510 case _IOC_WRITE: dir = "-w"; break;
2511 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
2512 default: dir = "*ERR*"; break;
2513 }
86748f35 2514 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
4839e6c2
HV		 2515 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
2516}
2517EXPORT_SYMBOL(v4l_printk_ioctl);
2518
069b7479 2519static long __video_do_ioctl(struct file *file,
35ea11ff
HV		 2520 unsigned int cmd, void *arg)
2521{
2522 struct video_device *vfd = video_devdata(file);
a399810c 2523 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
86748f35
HV		 2524 bool write_only = false;
2525 struct v4l2_ioctl_info default_info;
2526 const struct v4l2_ioctl_info *info;
d5fbf32f 2527 void *fh = file->private_data;
99cd47bc 2528 struct v4l2_fh *vfh = NULL;
17028cdb 2529 int dev_debug = vfd->dev_debug;
9190d191 2530 long ret = -ENOTTY;
35ea11ff 2531
6a717883 2532 if (ops == NULL) {
4a085168
HV		 2533 pr_warn("%s: has no ioctl_ops.\n",
2534 video_device_node_name(vfd));
9190d191 2535 return ret;
6a717883
HV		 2536 }
2537
b7284bb0 2538 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
99cd47bc
HV		 2539 vfh = file->private_data;
2540
48ea0be0 2541 if (v4l2_is_known_ioctl(cmd)) {
86748f35 2542 info = &v4l2_ioctls[_IOC_NR(cmd)];
48ea0be0 2543
2e5e435f 2544 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) &&
48ea0be0 2545 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
86748f35 2546 goto done;
4b902fec 2547
b7284bb0 2548 if (vfh && (info->flags & INFO_FL_PRIO)) {
4b902fec
HV		 2549 ret = v4l2_prio_check(vfd->prio, vfh->prio);
2550 if (ret)
86748f35 2551 goto done;
4b902fec 2552 }
86748f35
HV		 2553 } else {
2554 default_info.ioctl = cmd;
2555 default_info.flags = 0;
f18d8e07 2556 default_info.debug = v4l_print_default;
86748f35 2557 info = &default_info;
48ea0be0
HV		 2558 }
2559
86748f35 2560 write_only = _IOC_DIR(cmd) == _IOC_WRITE;
86748f35
HV		 2561 if (info->flags & INFO_FL_STD) {
2562 typedef int (*vidioc_op)(struct file *file, void *fh, void *p);
2563 const void *p = vfd->ioctl_ops;
26ddcbcc 2564 const vidioc_op *vidioc = p + info->u.offset;
86748f35
HV		 2565
2566 ret = (*vidioc)(file, fh, arg);
86748f35 2567 } else if (info->flags & INFO_FL_FUNC) {
26ddcbcc 2568 ret = info->u.func(ops, file, fh, arg);
f18d8e07
HV		 2569 } else if (!ops->vidioc_default) {
2570 ret = -ENOTTY;
2571 } else {
2572 ret = ops->vidioc_default(file, fh,
b7284bb0 2573 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
f18d8e07 2574 cmd, arg);
48ea0be0 2575 }
99cd47bc 2576
86748f35 2577done:
17028cdb
HV		 2578 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) {
2579 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) &&
2580 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF))
2581 return ret;
2582
4a085168 2583 v4l_printk_ioctl(video_device_node_name(vfd), cmd);
86748f35 2584 if (ret < 0)
505d04bd 2585 pr_cont(": error %ld", ret);
17028cdb 2586 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG))
86748f35 2587 pr_cont("\n");
86748f35
HV		 2588 else if (_IOC_DIR(cmd) == _IOC_NONE)
2589 info->debug(arg, write_only);
2590 else {
2591 pr_cont(": ");
2592 info->debug(arg, write_only);
35ea11ff
HV		 2593 }
2594 }
2595
2596 return ret;
2597}
2598
d14e6d76 2599static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
ba2d35c1 2600 void __user **user_ptr, void ***kernel_ptr)
d14e6d76
PO		 2601{
2602 int ret = 0;
2603
2604 switch (cmd) {
96b1a702 2605 case VIDIOC_PREPARE_BUF:
d14e6d76
PO		 2606 case VIDIOC_QUERYBUF:
2607 case VIDIOC_QBUF:
2608 case VIDIOC_DQBUF: {
2609 struct v4l2_buffer *buf = parg;
2610
2611 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
2612 if (buf->length > VIDEO_MAX_PLANES) {
2613 ret = -EINVAL;
2614 break;
2615 }
2616 *user_ptr = (void __user *)buf->m.planes;
ba2d35c1 2617 *kernel_ptr = (void **)&buf->m.planes;
d14e6d76
PO		 2618 *array_size = sizeof(struct v4l2_plane) * buf->length;
2619 ret = 1;
2620 }
2621 break;
2622 }
2623
dd519bb3
HV		 2624 case VIDIOC_G_EDID:
2625 case VIDIOC_S_EDID: {
2626 struct v4l2_edid *edid = parg;
ed45ce2c
HV		 2627
2628 if (edid->blocks) {
1b8b10cc
HV		 2629 if (edid->blocks > 256) {
2630 ret = -EINVAL;
2631 break;
2632 }
ed45ce2c 2633 *user_ptr = (void __user *)edid->edid;
ba2d35c1 2634 *kernel_ptr = (void **)&edid->edid;
ed45ce2c
HV		 2635 *array_size = edid->blocks * 128;
2636 ret = 1;
2637 }
2638 break;
2639 }
2640
d14e6d76
PO		 2641 case VIDIOC_S_EXT_CTRLS:
2642 case VIDIOC_G_EXT_CTRLS:
2643 case VIDIOC_TRY_EXT_CTRLS: {
2644 struct v4l2_ext_controls *ctrls = parg;
2645
2646 if (ctrls->count != 0) {
6c06108b
DC		 2647 if (ctrls->count > V4L2_CID_MAX_CTRLS) {
2648 ret = -EINVAL;
2649 break;
2650 }
d14e6d76 2651 *user_ptr = (void __user *)ctrls->controls;
ba2d35c1 2652 *kernel_ptr = (void **)&ctrls->controls;
d14e6d76
PO		 2653 *array_size = sizeof(struct v4l2_ext_control)
2654 * ctrls->count;
2655 ret = 1;
2656 }
2657 break;
2658 }
2659 }
2660
2661 return ret;
2662}
2663
fc0a8079
LP		 2664long
2665video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
2666 v4l2_kioctl func)
35ea11ff
HV		 2667{
2668 char sbuf[128];
2669 void *mbuf = NULL;
1d94aa36 2670 void *parg = (void *)arg;
069b7479 2671 long err = -EINVAL;
d14e6d76
PO		 2672 bool has_array_args;
2673 size_t array_size = 0;
35ea11ff 2674 void __user *user_ptr = NULL;
d14e6d76 2675 void **kernel_ptr = NULL;
35ea11ff 2676
35ea11ff 2677 /* Copy arguments into temp kernel buffer */
337f9d20 2678 if (_IOC_DIR(cmd) != _IOC_NONE) {
35ea11ff
HV		 2679 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
2680 parg = sbuf;
2681 } else {
2682 /* too big to allocate from stack */
2683 mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
2684 if (NULL == mbuf)
2685 return -ENOMEM;
2686 parg = mbuf;
2687 }
2688
2689 err = -EFAULT;
19c96e4b 2690 if (_IOC_DIR(cmd) & _IOC_WRITE) {
27cd2aba
HV		 2691 unsigned int n = _IOC_SIZE(cmd);
2692
2693 /*
2694 * In some cases, only a few fields are used as input,
2695 * i.e. when the app sets "index" and then the driver
2696 * fills in the rest of the structure for the thing
2697 * with that index. We only need to copy up the first
2698 * non-input field.
2699 */
2700 if (v4l2_is_known_ioctl(cmd)) {
2701 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags;
2702 if (flags & INFO_FL_CLEAR_MASK)
2703 n = (flags & INFO_FL_CLEAR_MASK) >> 16;
2704 }
19c96e4b
TP		 2705
2706 if (copy_from_user(parg, (void __user *)arg, n))
35ea11ff 2707 goto out;
19c96e4b
TP		 2708
2709 /* zero out anything we don't copy from userspace */
2710 if (n < _IOC_SIZE(cmd))
2711 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n);
337f9d20
TP		 2712 } else {
2713 /* read-only ioctl */
2714 memset(parg, 0, _IOC_SIZE(cmd));
19c96e4b 2715 }
35ea11ff
HV		 2716 }
2717
d14e6d76
PO		 2718 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
2719 if (err < 0)
2720 goto out;
2721 has_array_args = err;
35ea11ff 2722
d14e6d76
PO		 2723 if (has_array_args) {
2724 /*
2725 * When adding new types of array args, make sure that the
2726 * parent argument to ioctl (which contains the pointer to the
2727 * array) fits into sbuf (so that mbuf will still remain
2728 * unused up to here).
2729 */
2730 mbuf = kmalloc(array_size, GFP_KERNEL);
2731 err = -ENOMEM;
2732 if (NULL == mbuf)
2733 goto out_array_args;
2734 err = -EFAULT;
2735 if (copy_from_user(mbuf, user_ptr, array_size))
2736 goto out_array_args;
2737 *kernel_ptr = mbuf;
35ea11ff
HV		 2738 }
2739
2740 /* Handles IOCTL */
fc0a8079 2741 err = func(file, cmd, parg);
35ea11ff 2742 if (err == -ENOIOCTLCMD)
02bbb814 2743 err = -ENOTTY;
aa32f4c0
HV		 2744 if (err == 0) {
2745 if (cmd == VIDIOC_DQBUF)
2746 trace_v4l2_dqbuf(video_devdata(file)->minor, parg);
2747 else if (cmd == VIDIOC_QBUF)
2748 trace_v4l2_qbuf(video_devdata(file)->minor, parg);
2749 }
35ea11ff 2750
d14e6d76 2751 if (has_array_args) {
ba2d35c1 2752 *kernel_ptr = (void __force *)user_ptr;
d14e6d76 2753 if (copy_to_user(user_ptr, mbuf, array_size))
35ea11ff 2754 err = -EFAULT;
d14e6d76 2755 goto out_array_args;
35ea11ff 2756 }
5d7758ee
HV		 2757 /* VIDIOC_QUERY_DV_TIMINGS can return an error, but still have valid
2758 results that must be returned. */
2759 if (err < 0 && cmd != VIDIOC_QUERY_DV_TIMINGS)
35ea11ff
HV		 2760 goto out;
2761
d14e6d76 2762out_array_args:
35ea11ff
HV		 2763 /* Copy results into user buffer */
2764 switch (_IOC_DIR(cmd)) {
2765 case _IOC_READ:
2766 case (_IOC_WRITE | _IOC_READ):
2767 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
2768 err = -EFAULT;
2769 break;
2770 }
2771
2772out:
2773 kfree(mbuf);
2774 return err;
2775}
fc0a8079
LP		 2776EXPORT_SYMBOL(video_usercopy);
2777
2778long video_ioctl2(struct file *file,
2779 unsigned int cmd, unsigned long arg)
2780{
2781 return video_usercopy(file, cmd, arg, __video_do_ioctl);
2782}
8a522c91 2783EXPORT_SYMBOL(video_ioctl2);
Linux kernel - Deliverables
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