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[mirror_ubuntu-bionic-kernel.git] / drivers / media / v4l2-core / v4l2-ioctl.c
CommitLineData
35ea11ff
HV		 1/*
2 * Video capture interface for Linux version 2
3 *
4 * A generic framework to process V4L2 ioctl commands.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
d9b01449 11 * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1)
35ea11ff
HV		 12 * Mauro Carvalho Chehab <mchehab@infradead.org> (version 2)
13 */
14
758d90e1 15#include <linux/mm.h>
35ea11ff 16#include <linux/module.h>
5a0e3ad6 17#include <linux/slab.h>
35ea11ff
HV		 18#include <linux/types.h>
19#include <linux/kernel.h>
ae6db515 20#include <linux/version.h>
35ea11ff 21
35ea11ff
HV		 22#include <linux/videodev2.h>
23
35ea11ff
HV		 24#include <media/v4l2-common.h>
25#include <media/v4l2-ioctl.h>
11bbc1ca 26#include <media/v4l2-ctrls.h>
d3d7c963
SA		 27#include <media/v4l2-fh.h>
28#include <media/v4l2-event.h>
99cd47bc 29#include <media/v4l2-device.h>
c139990e 30#include <media/videobuf2-v4l2.h>
77fa4e07 31#include <media/v4l2-mc.h>
35ea11ff 32
aa32f4c0
HV		 33#include <trace/events/v4l2.h>
34
25985edc 35/* Zero out the end of the struct pointed to by p. Everything after, but
7ecc0cf9
TP		 36 * not including, the specified field is cleared. */
37#define CLEAR_AFTER_FIELD(p, field) \
38 memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \
39 0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field))
40
73f35418
HV		 41#define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls)
42
35ea11ff
HV		 43struct std_descr {
44 v4l2_std_id std;
45 const char *descr;
46};
47
48static const struct std_descr standards[] = {
49 { V4L2_STD_NTSC, "NTSC" },
50 { V4L2_STD_NTSC_M, "NTSC-M" },
51 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" },
52 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" },
53 { V4L2_STD_NTSC_443, "NTSC-443" },
54 { V4L2_STD_PAL, "PAL" },
55 { V4L2_STD_PAL_BG, "PAL-BG" },
56 { V4L2_STD_PAL_B, "PAL-B" },
57 { V4L2_STD_PAL_B1, "PAL-B1" },
58 { V4L2_STD_PAL_G, "PAL-G" },
59 { V4L2_STD_PAL_H, "PAL-H" },
60 { V4L2_STD_PAL_I, "PAL-I" },
61 { V4L2_STD_PAL_DK, "PAL-DK" },
62 { V4L2_STD_PAL_D, "PAL-D" },
63 { V4L2_STD_PAL_D1, "PAL-D1" },
64 { V4L2_STD_PAL_K, "PAL-K" },
65 { V4L2_STD_PAL_M, "PAL-M" },
66 { V4L2_STD_PAL_N, "PAL-N" },
67 { V4L2_STD_PAL_Nc, "PAL-Nc" },
68 { V4L2_STD_PAL_60, "PAL-60" },
69 { V4L2_STD_SECAM, "SECAM" },
70 { V4L2_STD_SECAM_B, "SECAM-B" },
71 { V4L2_STD_SECAM_G, "SECAM-G" },
72 { V4L2_STD_SECAM_H, "SECAM-H" },
73 { V4L2_STD_SECAM_DK, "SECAM-DK" },
74 { V4L2_STD_SECAM_D, "SECAM-D" },
75 { V4L2_STD_SECAM_K, "SECAM-K" },
76 { V4L2_STD_SECAM_K1, "SECAM-K1" },
77 { V4L2_STD_SECAM_L, "SECAM-L" },
78 { V4L2_STD_SECAM_LC, "SECAM-Lc" },
79 { 0, "Unknown" }
80};
81
82/* video4linux standard ID conversion to standard name
83 */
84const char *v4l2_norm_to_name(v4l2_std_id id)
85{
86 u32 myid = id;
87 int i;
88
89 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
90 64 bit comparations. So, on that architecture, with some gcc
91 variants, compilation fails. Currently, the max value is 30bit wide.
92 */
93 BUG_ON(myid != id);
94
95 for (i = 0; standards[i].std; i++)
96 if (myid == standards[i].std)
97 break;
98 return standards[i].descr;
99}
100EXPORT_SYMBOL(v4l2_norm_to_name);
101
51f0b8d5
TP		 102/* Returns frame period for the given standard */
103void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod)
104{
105 if (id & V4L2_STD_525_60) {
106 frameperiod->numerator = 1001;
107 frameperiod->denominator = 30000;
108 } else {
109 frameperiod->numerator = 1;
110 frameperiod->denominator = 25;
111 }
112}
113EXPORT_SYMBOL(v4l2_video_std_frame_period);
114
35ea11ff
HV		 115/* Fill in the fields of a v4l2_standard structure according to the
116 'id' and 'transmission' parameters. Returns negative on error. */
117int v4l2_video_std_construct(struct v4l2_standard *vs,
118 int id, const char *name)
119{
51f0b8d5
TP		 120 vs->id = id;
121 v4l2_video_std_frame_period(id, &vs->frameperiod);
122 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625;
35ea11ff
HV		 123 strlcpy(vs->name, name, sizeof(vs->name));
124 return 0;
125}
126EXPORT_SYMBOL(v4l2_video_std_construct);
127
128/* ----------------------------------------------------------------- */
129/* some arrays for pretty-printing debug messages of enum types */
130
131const char *v4l2_field_names[] = {
132 [V4L2_FIELD_ANY] = "any",
133 [V4L2_FIELD_NONE] = "none",
134 [V4L2_FIELD_TOP] = "top",
135 [V4L2_FIELD_BOTTOM] = "bottom",
136 [V4L2_FIELD_INTERLACED] = "interlaced",
137 [V4L2_FIELD_SEQ_TB] = "seq-tb",
138 [V4L2_FIELD_SEQ_BT] = "seq-bt",
139 [V4L2_FIELD_ALTERNATE] = "alternate",
140 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",
141 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",
142};
143EXPORT_SYMBOL(v4l2_field_names);
144
145const char *v4l2_type_names[] = {
839aa56d 146 [0] = "0",
35ea11ff
HV		 147 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap",
148 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay",
149 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out",
150 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap",
151 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out",
152 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",
153 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out",
154 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay",
f8f3914c
PO		 155 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane",
156 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane",
6f3073b8 157 [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap",
9effc72f 158 [V4L2_BUF_TYPE_SDR_OUTPUT] = "sdr-out",
fb9ffa6a 159 [V4L2_BUF_TYPE_META_CAPTURE] = "meta-cap",
35ea11ff
HV		 160};
161EXPORT_SYMBOL(v4l2_type_names);
162
163static const char *v4l2_memory_names[] = {
164 [V4L2_MEMORY_MMAP] = "mmap",
165 [V4L2_MEMORY_USERPTR] = "userptr",
166 [V4L2_MEMORY_OVERLAY] = "overlay",
051c7788 167 [V4L2_MEMORY_DMABUF] = "dmabuf",
35ea11ff
HV		 168};
169
d9246240 170#define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown")
35ea11ff
HV		 171
172/* ------------------------------------------------------------------ */
173/* debug help functions */
8ab75e3e 174
59076122
HV		 175static void v4l_print_querycap(const void *arg, bool write_only)
176{
177 const struct v4l2_capability *p = arg;
178
8720427c 179 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, capabilities=0x%08x, device_caps=0x%08x\n",
27d5a87c
HV		 180 (int)sizeof(p->driver), p->driver,
181 (int)sizeof(p->card), p->card,
182 (int)sizeof(p->bus_info), p->bus_info,
59076122
HV		 183 p->version, p->capabilities, p->device_caps);
184}
185
186static void v4l_print_enuminput(const void *arg, bool write_only)
187{
188 const struct v4l2_input *p = arg;
189
8720427c 190 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, std=0x%08Lx, status=0x%x, capabilities=0x%x\n",
27d5a87c
HV		 191 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
192 p->tuner, (unsigned long long)p->std, p->status,
193 p->capabilities);
59076122
HV		 194}
195
196static void v4l_print_enumoutput(const void *arg, bool write_only)
197{
198 const struct v4l2_output *p = arg;
199
8720427c 200 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, modulator=%u, std=0x%08Lx, capabilities=0x%x\n",
27d5a87c
HV		 201 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
202 p->modulator, (unsigned long long)p->std, p->capabilities);
59076122
HV		 203}
204
205static void v4l_print_audio(const void *arg, bool write_only)
206{
207 const struct v4l2_audio *p = arg;
208
209 if (write_only)
210 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode);
211 else
27d5a87c
HV		 212 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
213 p->index, (int)sizeof(p->name), p->name,
214 p->capability, p->mode);
59076122
HV		 215}
216
217static void v4l_print_audioout(const void *arg, bool write_only)
218{
219 const struct v4l2_audioout *p = arg;
220
221 if (write_only)
222 pr_cont("index=%u\n", p->index);
223 else
27d5a87c
HV		 224 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
225 p->index, (int)sizeof(p->name), p->name,
226 p->capability, p->mode);
59076122
HV		 227}
228
be6c64e4
HV		 229static void v4l_print_fmtdesc(const void *arg, bool write_only)
230{
231 const struct v4l2_fmtdesc *p = arg;
232
27d5a87c 233 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%c%c%c%c, description='%.*s'\n",
be6c64e4
HV		 234 p->index, prt_names(p->type, v4l2_type_names),
235 p->flags, (p->pixelformat & 0xff),
236 (p->pixelformat >> 8) & 0xff,
237 (p->pixelformat >> 16) & 0xff,
238 (p->pixelformat >> 24) & 0xff,
27d5a87c 239 (int)sizeof(p->description), p->description);
be6c64e4
HV		 240}
241
242static void v4l_print_format(const void *arg, bool write_only)
243{
244 const struct v4l2_format *p = arg;
245 const struct v4l2_pix_format *pix;
246 const struct v4l2_pix_format_mplane *mp;
247 const struct v4l2_vbi_format *vbi;
248 const struct v4l2_sliced_vbi_format *sliced;
249 const struct v4l2_window *win;
87185c95 250 const struct v4l2_sdr_format *sdr;
fb9ffa6a 251 const struct v4l2_meta_format *meta;
da460562 252 u32 planes;
be6c64e4
HV		 253 unsigned i;
254
255 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
256 switch (p->type) {
257 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
258 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
259 pix = &p->fmt.pix;
8720427c 260 pr_cont(", width=%u, height=%u, pixelformat=%c%c%c%c, field=%s, bytesperline=%u, sizeimage=%u, colorspace=%d, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",
be6c64e4
HV		 261 pix->width, pix->height,
262 (pix->pixelformat & 0xff),
263 (pix->pixelformat >> 8) & 0xff,
264 (pix->pixelformat >> 16) & 0xff,
265 (pix->pixelformat >> 24) & 0xff,
266 prt_names(pix->field, v4l2_field_names),
267 pix->bytesperline, pix->sizeimage,
736d96b5 268 pix->colorspace, pix->flags, pix->ycbcr_enc,
74fdcb2e 269 pix->quantization, pix->xfer_func);
be6c64e4
HV		 270 break;
271 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
272 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
273 mp = &p->fmt.pix_mp;
8720427c 274 pr_cont(", width=%u, height=%u, format=%c%c%c%c, field=%s, colorspace=%d, num_planes=%u, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",
be6c64e4
HV		 275 mp->width, mp->height,
276 (mp->pixelformat & 0xff),
277 (mp->pixelformat >> 8) & 0xff,
278 (mp->pixelformat >> 16) & 0xff,
279 (mp->pixelformat >> 24) & 0xff,
280 prt_names(mp->field, v4l2_field_names),
736d96b5 281 mp->colorspace, mp->num_planes, mp->flags,
74fdcb2e 282 mp->ycbcr_enc, mp->quantization, mp->xfer_func);
da460562
SA		 283 planes = min_t(u32, mp->num_planes, VIDEO_MAX_PLANES);
284 for (i = 0; i < planes; i++)
be6c64e4
HV		 285 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i,
286 mp->plane_fmt[i].bytesperline,
287 mp->plane_fmt[i].sizeimage);
288 break;
289 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
290 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
291 win = &p->fmt.win;
560dde24
HV		 292 /* Note: we can't print the clip list here since the clips
293 * pointer is a userspace pointer, not a kernelspace
294 * pointer. */
295 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",
296 win->w.width, win->w.height, win->w.left, win->w.top,
be6c64e4 297 prt_names(win->field, v4l2_field_names),
560dde24
HV		 298 win->chromakey, win->clipcount, win->clips,
299 win->bitmap, win->global_alpha);
be6c64e4
HV		 300 break;
301 case V4L2_BUF_TYPE_VBI_CAPTURE:
302 case V4L2_BUF_TYPE_VBI_OUTPUT:
303 vbi = &p->fmt.vbi;
8720427c 304 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n",
be6c64e4
HV		 305 vbi->sampling_rate, vbi->offset,
306 vbi->samples_per_line,
307 (vbi->sample_format & 0xff),
308 (vbi->sample_format >> 8) & 0xff,
309 (vbi->sample_format >> 16) & 0xff,
310 (vbi->sample_format >> 24) & 0xff,
311 vbi->start[0], vbi->start[1],
312 vbi->count[0], vbi->count[1]);
313 break;
314 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
315 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
316 sliced = &p->fmt.sliced;
317 pr_cont(", service_set=0x%08x, io_size=%d\n",
318 sliced->service_set, sliced->io_size);
319 for (i = 0; i < 24; i++)
320 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
321 sliced->service_lines[0][i],
322 sliced->service_lines[1][i]);
323 break;
582c52cb 324 case V4L2_BUF_TYPE_SDR_CAPTURE:
9effc72f 325 case V4L2_BUF_TYPE_SDR_OUTPUT:
582c52cb
AP		 326 sdr = &p->fmt.sdr;
327 pr_cont(", pixelformat=%c%c%c%c\n",
328 (sdr->pixelformat >> 0) & 0xff,
329 (sdr->pixelformat >> 8) & 0xff,
330 (sdr->pixelformat >> 16) & 0xff,
331 (sdr->pixelformat >> 24) & 0xff);
332 break;
fb9ffa6a
LP		 333 case V4L2_BUF_TYPE_META_CAPTURE:
334 meta = &p->fmt.meta;
335 pr_cont(", dataformat=%c%c%c%c, buffersize=%u\n",
336 (meta->dataformat >> 0) & 0xff,
337 (meta->dataformat >> 8) & 0xff,
338 (meta->dataformat >> 16) & 0xff,
339 (meta->dataformat >> 24) & 0xff,
340 meta->buffersize);
341 break;
be6c64e4
HV		 342 }
343}
344
345static void v4l_print_framebuffer(const void *arg, bool write_only)
346{
347 const struct v4l2_framebuffer *p = arg;
348
8720427c 349 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, height=%u, pixelformat=%c%c%c%c, bytesperline=%u, sizeimage=%u, colorspace=%d\n",
be6c64e4
HV		 350 p->capability, p->flags, p->base,
351 p->fmt.width, p->fmt.height,
352 (p->fmt.pixelformat & 0xff),
353 (p->fmt.pixelformat >> 8) & 0xff,
354 (p->fmt.pixelformat >> 16) & 0xff,
355 (p->fmt.pixelformat >> 24) & 0xff,
356 p->fmt.bytesperline, p->fmt.sizeimage,
357 p->fmt.colorspace);
358}
359
e325b244
HV		 360static void v4l_print_buftype(const void *arg, bool write_only)
361{
362 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names));
363}
364
4b1e2e4d
HV		 365static void v4l_print_modulator(const void *arg, bool write_only)
366{
367 const struct v4l2_modulator *p = arg;
368
369 if (write_only)
560dde24 370 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans);
4b1e2e4d 371 else
8720427c 372 pr_cont("index=%u, name=%.*s, capability=0x%x, rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
27d5a87c 373 p->index, (int)sizeof(p->name), p->name, p->capability,
4b1e2e4d
HV		 374 p->rangelow, p->rangehigh, p->txsubchans);
375}
376
377static void v4l_print_tuner(const void *arg, bool write_only)
378{
379 const struct v4l2_tuner *p = arg;
380
381 if (write_only)
382 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode);
383 else
8720427c 384 pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, rangelow=%u, rangehigh=%u, signal=%u, afc=%d, rxsubchans=0x%x, audmode=%u\n",
27d5a87c 385 p->index, (int)sizeof(p->name), p->name, p->type,
4b1e2e4d
HV		 386 p->capability, p->rangelow,
387 p->rangehigh, p->signal, p->afc,
388 p->rxsubchans, p->audmode);
389}
390
391static void v4l_print_frequency(const void *arg, bool write_only)
392{
393 const struct v4l2_frequency *p = arg;
394
395 pr_cont("tuner=%u, type=%u, frequency=%u\n",
396 p->tuner, p->type, p->frequency);
397}
398
399static void v4l_print_standard(const void *arg, bool write_only)
400{
401 const struct v4l2_standard *p = arg;
402
8720427c
MCC		 403 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, framelines=%u\n",
404 p->index,
27d5a87c 405 (unsigned long long)p->id, (int)sizeof(p->name), p->name,
4b1e2e4d
HV		 406 p->frameperiod.numerator,
407 p->frameperiod.denominator,
408 p->framelines);
409}
410
411static void v4l_print_std(const void *arg, bool write_only)
412{
413 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg);
414}
415
416static void v4l_print_hw_freq_seek(const void *arg, bool write_only)
417{
418 const struct v4l2_hw_freq_seek *p = arg;
419
8720427c 420 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, rangelow=%u, rangehigh=%u\n",
5e788317
HV		 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
8720427c 442 pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, flags=0x%08x, field=%s, sequence=%d, memory=%s",
35ea11ff
HV		 443 p->timestamp.tv_sec / 3600,
444 (int)(p->timestamp.tv_sec / 60) % 60,
445 (int)(p->timestamp.tv_sec % 60),
b045979d 446 (long)p->timestamp.tv_usec,
35ea11ff
HV		 447 p->index,
448 prt_names(p->type, v4l2_type_names),
eb3728ed
HV		 449 p->flags, prt_names(p->field, v4l2_field_names),
450 p->sequence, prt_names(p->memory, v4l2_memory_names));
d14e6d76
PO		 451
452 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
eb3728ed 453 pr_cont("\n");
d14e6d76
PO		 454 for (i = 0; i < p->length; ++i) {
455 plane = &p->m.planes[i];
eb3728ed 456 printk(KERN_DEBUG
8720427c 457 "plane %d: bytesused=%d, data_offset=0x%08x, offset/userptr=0x%lx, length=%d\n",
d14e6d76
PO		 458 i, plane->bytesused, plane->data_offset,
459 plane->m.userptr, plane->length);
460 }
461 } else {
560dde24 462 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n",
d14e6d76
PO		 463 p->bytesused, p->m.userptr, p->length);
464 }
465
8720427c 466 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, flags=0x%08x, frames=%d, userbits=0x%08x\n",
35ea11ff
HV		 467 tc->hours, tc->minutes, tc->seconds,
468 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
469}
470
b799d09a
TS		 471static void v4l_print_exportbuffer(const void *arg, bool write_only)
472{
473 const struct v4l2_exportbuffer *p = arg;
474
475 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n",
476 p->fd, prt_names(p->type, v4l2_type_names),
477 p->index, p->plane, p->flags);
478}
479
eb3728ed
HV		 480static void v4l_print_create_buffers(const void *arg, bool write_only)
481{
482 const struct v4l2_create_buffers *p = arg;
483
484 pr_cont("index=%d, count=%d, memory=%s, ",
485 p->index, p->count,
486 prt_names(p->memory, v4l2_memory_names));
487 v4l_print_format(&p->format, write_only);
488}
489
490static void v4l_print_streamparm(const void *arg, bool write_only)
491{
492 const struct v4l2_streamparm *p = arg;
493
494 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
495
496 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
497 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
498 const struct v4l2_captureparm *c = &p->parm.capture;
499
8720427c 500 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, extendedmode=%d, readbuffers=%d\n",
eb3728ed
HV		 501 c->capability, c->capturemode,
502 c->timeperframe.numerator, c->timeperframe.denominator,
503 c->extendedmode, c->readbuffers);
504 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
505 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
506 const struct v4l2_outputparm *c = &p->parm.output;
507
8720427c 508 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, extendedmode=%d, writebuffers=%d\n",
eb3728ed
HV		 509 c->capability, c->outputmode,
510 c->timeperframe.numerator, c->timeperframe.denominator,
511 c->extendedmode, c->writebuffers);
560dde24
HV		 512 } else {
513 pr_cont("\n");
eb3728ed
HV		 514 }
515}
516
efbceecd
HV		 517static void v4l_print_queryctrl(const void *arg, bool write_only)
518{
519 const struct v4l2_queryctrl *p = arg;
520
8720427c 521 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, step=%d, default=%d, flags=0x%08x\n",
27d5a87c 522 p->id, p->type, (int)sizeof(p->name), p->name,
efbceecd
HV		 523 p->minimum, p->maximum,
524 p->step, p->default_value, p->flags);
525}
526
e6bee368
HV		 527static void v4l_print_query_ext_ctrl(const void *arg, bool write_only)
528{
529 const struct v4l2_query_ext_ctrl *p = arg;
530
8720427c 531 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%lld/%lld, step=%lld, default=%lld, flags=0x%08x, elem_size=%u, elems=%u, nr_of_dims=%u, dims=%u,%u,%u,%u\n",
e6bee368
HV		 532 p->id, p->type, (int)sizeof(p->name), p->name,
533 p->minimum, p->maximum,
534 p->step, p->default_value, p->flags,
535 p->elem_size, p->elems, p->nr_of_dims,
0176077a 536 p->dims[0], p->dims[1], p->dims[2], p->dims[3]);
e6bee368
HV		 537}
538
efbceecd
HV		 539static void v4l_print_querymenu(const void *arg, bool write_only)
540{
541 const struct v4l2_querymenu *p = arg;
542
543 pr_cont("id=0x%x, index=%d\n", p->id, p->index);
544}
545
546static void v4l_print_control(const void *arg, bool write_only)
547{
548 const struct v4l2_control *p = arg;
549
550 pr_cont("id=0x%x, value=%d\n", p->id, p->value);
551}
552
553static void v4l_print_ext_controls(const void *arg, bool write_only)
554{
555 const struct v4l2_ext_controls *p = arg;
556 int i;
557
0f8017be
RRD		 558 pr_cont("which=0x%x, count=%d, error_idx=%d",
559 p->which, p->count, p->error_idx);
efbceecd 560 for (i = 0; i < p->count; i++) {
017ab36a 561 if (!p->controls[i].size)
efbceecd
HV		 562 pr_cont(", id/val=0x%x/0x%x",
563 p->controls[i].id, p->controls[i].value);
564 else
565 pr_cont(", id/size=0x%x/%u",
566 p->controls[i].id, p->controls[i].size);
567 }
568 pr_cont("\n");
569}
570
d84f2d94 571static void v4l_print_cropcap(const void *arg, bool write_only)
eb3728ed 572{
d84f2d94
HV		 573 const struct v4l2_cropcap *p = arg;
574
8720427c 575 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, defrect wxh=%dx%d, x,y=%d,%d, pixelaspect %d/%d\n",
d84f2d94
HV		 576 prt_names(p->type, v4l2_type_names),
577 p->bounds.width, p->bounds.height,
578 p->bounds.left, p->bounds.top,
579 p->defrect.width, p->defrect.height,
580 p->defrect.left, p->defrect.top,
581 p->pixelaspect.numerator, p->pixelaspect.denominator);
eb3728ed
HV		 582}
583
d84f2d94 584static void v4l_print_crop(const void *arg, bool write_only)
35ea11ff 585{
d84f2d94
HV		 586 const struct v4l2_crop *p = arg;
587
588 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n",
589 prt_names(p->type, v4l2_type_names),
590 p->c.width, p->c.height,
591 p->c.left, p->c.top);
592}
593
594static void v4l_print_selection(const void *arg, bool write_only)
595{
596 const struct v4l2_selection *p = arg;
597
598 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n",
599 prt_names(p->type, v4l2_type_names),
600 p->target, p->flags,
601 p->r.width, p->r.height, p->r.left, p->r.top);
602}
603
d806f2df
HV		 604static void v4l_print_jpegcompression(const void *arg, bool write_only)
605{
606 const struct v4l2_jpegcompression *p = arg;
607
8720427c 608 pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n",
d806f2df
HV		 609 p->quality, p->APPn, p->APP_len,
610 p->COM_len, p->jpeg_markers);
611}
612
613static void v4l_print_enc_idx(const void *arg, bool write_only)
614{
615 const struct v4l2_enc_idx *p = arg;
616
617 pr_cont("entries=%d, entries_cap=%d\n",
618 p->entries, p->entries_cap);
619}
620
621static void v4l_print_encoder_cmd(const void *arg, bool write_only)
622{
623 const struct v4l2_encoder_cmd *p = arg;
624
625 pr_cont("cmd=%d, flags=0x%x\n",
626 p->cmd, p->flags);
627}
628
629static void v4l_print_decoder_cmd(const void *arg, bool write_only)
630{
631 const struct v4l2_decoder_cmd *p = arg;
632
633 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags);
634
635 if (p->cmd == V4L2_DEC_CMD_START)
636 pr_info("speed=%d, format=%u\n",
637 p->start.speed, p->start.format);
638 else if (p->cmd == V4L2_DEC_CMD_STOP)
639 pr_info("pts=%llu\n", p->stop.pts);
640}
641
96b03d2a 642static void v4l_print_dbg_chip_info(const void *arg, bool write_only)
79b0c640 643{
96b03d2a 644 const struct v4l2_dbg_chip_info *p = arg;
79b0c640
HV		 645
646 pr_cont("type=%u, ", p->match.type);
3eef2510 647 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
79b0c640
HV		 648 pr_cont("name=%.*s, ",
649 (int)sizeof(p->match.name), p->match.name);
650 else
651 pr_cont("addr=%u, ", p->match.addr);
652 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name);
653}
654
f16f77b0
HV		 655static void v4l_print_dbg_register(const void *arg, bool write_only)
656{
657 const struct v4l2_dbg_register *p = arg;
658
659 pr_cont("type=%u, ", p->match.type);
3eef2510 660 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
27d5a87c
HV		 661 pr_cont("name=%.*s, ",
662 (int)sizeof(p->match.name), p->match.name);
f16f77b0
HV		 663 else
664 pr_cont("addr=%u, ", p->match.addr);
665 pr_cont("reg=0x%llx, val=0x%llx\n",
666 p->reg, p->val);
667}
668
efc626b0 669static void v4l_print_dv_timings(const void *arg, bool write_only)
5d7758ee 670{
efc626b0
HV		 671 const struct v4l2_dv_timings *p = arg;
672
5d7758ee
HV		 673 switch (p->type) {
674 case V4L2_DV_BT_656_1120:
8720427c 675 pr_cont("type=bt-656/1120, interlaced=%u, pixelclock=%llu, width=%u, height=%u, polarities=0x%x, hfrontporch=%u, hsync=%u, hbackporch=%u, vfrontporch=%u, vsync=%u, vbackporch=%u, il_vfrontporch=%u, il_vsync=%u, il_vbackporch=%u, standards=0x%x, flags=0x%x\n",
5d7758ee
HV		 676 p->bt.interlaced, p->bt.pixelclock,
677 p->bt.width, p->bt.height,
678 p->bt.polarities, p->bt.hfrontporch,
679 p->bt.hsync, p->bt.hbackporch,
680 p->bt.vfrontporch, p->bt.vsync,
681 p->bt.vbackporch, p->bt.il_vfrontporch,
682 p->bt.il_vsync, p->bt.il_vbackporch,
683 p->bt.standards, p->bt.flags);
684 break;
685 default:
efc626b0 686 pr_cont("type=%d\n", p->type);
5d7758ee
HV		 687 break;
688 }
689}
690
efc626b0
HV		 691static void v4l_print_enum_dv_timings(const void *arg, bool write_only)
692{
693 const struct v4l2_enum_dv_timings *p = arg;
694
695 pr_cont("index=%u, ", p->index);
696 v4l_print_dv_timings(&p->timings, write_only);
697}
698
699static void v4l_print_dv_timings_cap(const void *arg, bool write_only)
700{
701 const struct v4l2_dv_timings_cap *p = arg;
702
703 switch (p->type) {
704 case V4L2_DV_BT_656_1120:
8720427c 705 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
efc626b0
HV		 706 p->bt.min_width, p->bt.max_width,
707 p->bt.min_height, p->bt.max_height,
708 p->bt.min_pixelclock, p->bt.max_pixelclock,
709 p->bt.standards, p->bt.capabilities);
710 break;
711 default:
712 pr_cont("type=%u\n", p->type);
713 break;
714 }
715}
716
458aa4a6
HV		 717static void v4l_print_frmsizeenum(const void *arg, bool write_only)
718{
719 const struct v4l2_frmsizeenum *p = arg;
720
721 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u",
722 p->index,
723 (p->pixel_format & 0xff),
724 (p->pixel_format >> 8) & 0xff,
725 (p->pixel_format >> 16) & 0xff,
726 (p->pixel_format >> 24) & 0xff,
727 p->type);
728 switch (p->type) {
729 case V4L2_FRMSIZE_TYPE_DISCRETE:
560dde24 730 pr_cont(", wxh=%ux%u\n",
458aa4a6
HV		 731 p->discrete.width, p->discrete.height);
732 break;
733 case V4L2_FRMSIZE_TYPE_STEPWISE:
560dde24 734 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n",
2489477e
RRD		 735 p->stepwise.min_width,
736 p->stepwise.min_height,
737 p->stepwise.max_width,
738 p->stepwise.max_height,
739 p->stepwise.step_width,
740 p->stepwise.step_height);
458aa4a6
HV		 741 break;
742 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
743 /* fall through */
744 default:
745 pr_cont("\n");
746 break;
747 }
748}
749
750static void v4l_print_frmivalenum(const void *arg, bool write_only)
751{
752 const struct v4l2_frmivalenum *p = arg;
753
754 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u",
755 p->index,
756 (p->pixel_format & 0xff),
757 (p->pixel_format >> 8) & 0xff,
758 (p->pixel_format >> 16) & 0xff,
759 (p->pixel_format >> 24) & 0xff,
760 p->width, p->height, p->type);
761 switch (p->type) {
762 case V4L2_FRMIVAL_TYPE_DISCRETE:
560dde24 763 pr_cont(", fps=%d/%d\n",
458aa4a6
HV		 764 p->discrete.numerator,
765 p->discrete.denominator);
766 break;
767 case V4L2_FRMIVAL_TYPE_STEPWISE:
560dde24 768 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n",
458aa4a6
HV		 769 p->stepwise.min.numerator,
770 p->stepwise.min.denominator,
771 p->stepwise.max.numerator,
772 p->stepwise.max.denominator,
773 p->stepwise.step.numerator,
774 p->stepwise.step.denominator);
775 break;
776 case V4L2_FRMIVAL_TYPE_CONTINUOUS:
777 /* fall through */
778 default:
779 pr_cont("\n");
780 break;
781 }
782}
783
784static void v4l_print_event(const void *arg, bool write_only)
785{
786 const struct v4l2_event *p = arg;
787 const struct v4l2_event_ctrl *c;
788
8720427c 789 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%lu.%9.9lu\n",
458aa4a6
HV		 790 p->type, p->pending, p->sequence, p->id,
791 p->timestamp.tv_sec, p->timestamp.tv_nsec);
792 switch (p->type) {
793 case V4L2_EVENT_VSYNC:
794 printk(KERN_DEBUG "field=%s\n",
795 prt_names(p->u.vsync.field, v4l2_field_names));
796 break;
797 case V4L2_EVENT_CTRL:
798 c = &p->u.ctrl;
799 printk(KERN_DEBUG "changes=0x%x, type=%u, ",
800 c->changes, c->type);
801 if (c->type == V4L2_CTRL_TYPE_INTEGER64)
802 pr_cont("value64=%lld, ", c->value64);
803 else
804 pr_cont("value=%d, ", c->value);
8720427c 805 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n",
458aa4a6
HV		 806 c->flags, c->minimum, c->maximum,
807 c->step, c->default_value);
808 break;
809 case V4L2_EVENT_FRAME_SYNC:
810 pr_cont("frame_sequence=%u\n",
811 p->u.frame_sync.frame_sequence);
812 break;
813 }
814}
815
816static void v4l_print_event_subscription(const void *arg, bool write_only)
817{
818 const struct v4l2_event_subscription *p = arg;
819
820 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
821 p->type, p->id, p->flags);
822}
823
824static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only)
825{
826 const struct v4l2_sliced_vbi_cap *p = arg;
827 int i;
828
829 pr_cont("type=%s, service_set=0x%08x\n",
830 prt_names(p->type, v4l2_type_names), p->service_set);
831 for (i = 0; i < 24; i++)
832 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
833 p->service_lines[0][i],
834 p->service_lines[1][i]);
835}
836
82b655bf
HV		 837static void v4l_print_freq_band(const void *arg, bool write_only)
838{
839 const struct v4l2_frequency_band *p = arg;
840
8720427c 841 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n",
82b655bf
HV		 842 p->tuner, p->type, p->index,
843 p->capability, p->rangelow,
844 p->rangehigh, p->modulation);
845}
846
dd519bb3
HV		 847static void v4l_print_edid(const void *arg, bool write_only)
848{
849 const struct v4l2_edid *p = arg;
850
851 pr_cont("pad=%u, start_block=%u, blocks=%u\n",
852 p->pad, p->start_block, p->blocks);
853}
854
efc626b0
HV		 855static void v4l_print_u32(const void *arg, bool write_only)
856{
857 pr_cont("value=%u\n", *(const u32 *)arg);
858}
859
860static void v4l_print_newline(const void *arg, bool write_only)
861{
862 pr_cont("\n");
863}
864
f18d8e07
HV		 865static void v4l_print_default(const void *arg, bool write_only)
866{
867 pr_cont("driver-specific ioctl\n");
868}
869
efbceecd 870static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
35ea11ff
HV		 871{
872 __u32 i;
873
874 /* zero the reserved fields */
875 c->reserved[0] = c->reserved[1] = 0;
6b5a9492 876 for (i = 0; i < c->count; i++)
35ea11ff 877 c->controls[i].reserved2[0] = 0;
6b5a9492 878
35ea11ff
HV		 879 /* V4L2_CID_PRIVATE_BASE cannot be used as control class
880 when using extended controls.
881 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
882 is it allowed for backwards compatibility.
883 */
0f8017be 884 if (!allow_priv && c->which == V4L2_CID_PRIVATE_BASE)
35ea11ff 885 return 0;
0f8017be 886 if (!c->which)
9b239b22 887 return 1;
35ea11ff
HV		 888 /* Check that all controls are from the same control class. */
889 for (i = 0; i < c->count; i++) {
0f8017be 890 if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) {
35ea11ff
HV		 891 c->error_idx = i;
892 return 0;
893 }
894 }
895 return 1;
896}
897
4b20259f 898static int check_fmt(struct file *file, enum v4l2_buf_type type)
35ea11ff 899{
4b20259f
HV		 900 struct video_device *vfd = video_devdata(file);
901 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
902 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
903 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI;
582c52cb 904 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
b2fe22d0 905 bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH;
4b20259f
HV		 906 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
907 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
908
a399810c
HV		 909 if (ops == NULL)
910 return -EINVAL;
911
35ea11ff
HV		 912 switch (type) {
913 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
b2fe22d0 914 if ((is_vid || is_tch) && is_rx &&
4b20259f 915 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane))
d14e6d76
PO		 916 return 0;
917 break;
918 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 919 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_cap_mplane)
35ea11ff
HV		 920 return 0;
921 break;
922 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 923 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay)
35ea11ff
HV		 924 return 0;
925 break;
926 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f
HV		 927 if (is_vid && is_tx &&
928 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane))
d14e6d76
PO		 929 return 0;
930 break;
931 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 932 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane)
35ea11ff
HV		 933 return 0;
934 break;
935 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 936 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay)
35ea11ff
HV		 937 return 0;
938 break;
939 case V4L2_BUF_TYPE_VBI_CAPTURE:
4b20259f 940 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap)
35ea11ff
HV		 941 return 0;
942 break;
943 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 944 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out)
35ea11ff
HV		 945 return 0;
946 break;
947 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
4b20259f 948 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap)
35ea11ff
HV		 949 return 0;
950 break;
951 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 952 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out)
35ea11ff
HV		 953 return 0;
954 break;
582c52cb
AP		 955 case V4L2_BUF_TYPE_SDR_CAPTURE:
956 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap)
957 return 0;
958 break;
9effc72f
AP		 959 case V4L2_BUF_TYPE_SDR_OUTPUT:
960 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out)
961 return 0;
962 break;
fb9ffa6a
LP		 963 case V4L2_BUF_TYPE_META_CAPTURE:
964 if (is_vid && is_rx && ops->vidioc_g_fmt_meta_cap)
965 return 0;
966 break;
633c98e5 967 default:
35ea11ff
HV		 968 break;
969 }
970 return -EINVAL;
971}
972
d52e2381
LP		 973static void v4l_sanitize_format(struct v4l2_format *fmt)
974{
975 unsigned int offset;
976
977 /*
978 * The v4l2_pix_format structure has been extended with fields that were
979 * not previously required to be set to zero by applications. The priv
980 * field, when set to a magic value, indicates the the extended fields
981 * are valid. Otherwise they will contain undefined values. To simplify
982 * the API towards drivers zero the extended fields and set the priv
983 * field to the magic value when the extended pixel format structure
984 * isn't used by applications.
985 */
986
987 if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
988 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
989 return;
990
991 if (fmt->fmt.pix.priv == V4L2_PIX_FMT_PRIV_MAGIC)
992 return;
993
994 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
995
996 offset = offsetof(struct v4l2_pix_format, priv)
997 + sizeof(fmt->fmt.pix.priv);
998 memset(((void *)&fmt->fmt.pix) + offset, 0,
999 sizeof(fmt->fmt.pix) - offset);
1000}
1001
59076122
HV		 1002static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
1003 struct file *file, void *fh, void *arg)
1004{
1005 struct v4l2_capability *cap = (struct v4l2_capability *)arg;
7bbe7813 1006 struct video_device *vfd = video_devdata(file);
d52e2381 1007 int ret;
59076122
HV		 1008
1009 cap->version = LINUX_VERSION_CODE;
7bbe7813
HV		 1010 cap->device_caps = vfd->device_caps;
1011 cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS;
d52e2381
LP		 1012
1013 ret = ops->vidioc_querycap(file, fh, cap);
1014
1015 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT;
454a4e72
HV		 1016 /*
1017 * Drivers MUST fill in device_caps, so check for this and
1018 * warn if it was forgotten.
1019 */
6d7570c4
LA		 1020 WARN(!(cap->capabilities & V4L2_CAP_DEVICE_CAPS) ||
1021 !cap->device_caps, "Bad caps for driver %s, %x %x",
1022 cap->driver, cap->capabilities, cap->device_caps);
796a2bd2 1023 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT;
d52e2381
LP		 1024
1025 return ret;
59076122
HV		 1026}
1027
1028static int v4l_s_input(const struct v4l2_ioctl_ops *ops,
1029 struct file *file, void *fh, void *arg)
1030{
77fa4e07
SK		 1031 struct video_device *vfd = video_devdata(file);
1032 int ret;
1033
1034 ret = v4l_enable_media_source(vfd);
1035 if (ret)
1036 return ret;
59076122
HV		 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 1151 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break;
5b382290
LP		 1152 case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break;
1153 case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break;
1154 case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break;
5df082e2 1155 case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break;
ba300204
HV		 1156 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break;
1157 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break;
1158 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break;
1159 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break;
1160 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break;
1161 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break;
1162 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break;
1163 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break;
1164 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break;
fcbafafb 1165 case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break;
ba300204
HV		 1166 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break;
1167 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break;
1168 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break;
1169 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break;
1170 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break;
1171 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break;
1172 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break;
1173 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break;
1174 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break;
1175 case V4L2_PIX_FMT_HM12: descr = "YUV 4:2:0 (16x16 Macroblocks)"; break;
1176 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break;
1177 case V4L2_PIX_FMT_NV12: descr = "Y/CbCr 4:2:0"; break;
1178 case V4L2_PIX_FMT_NV21: descr = "Y/CrCb 4:2:0"; break;
1179 case V4L2_PIX_FMT_NV16: descr = "Y/CbCr 4:2:2"; break;
1180 case V4L2_PIX_FMT_NV61: descr = "Y/CrCb 4:2:2"; break;
1181 case V4L2_PIX_FMT_NV24: descr = "Y/CbCr 4:4:4"; break;
1182 case V4L2_PIX_FMT_NV42: descr = "Y/CrCb 4:4:4"; break;
1183 case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break;
1184 case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break;
1185 case V4L2_PIX_FMT_NV16M: descr = "Y/CbCr 4:2:2 (N-C)"; break;
1186 case V4L2_PIX_FMT_NV61M: descr = "Y/CrCb 4:2:2 (N-C)"; break;
1187 case V4L2_PIX_FMT_NV12MT: descr = "Y/CbCr 4:2:0 (64x32 MB, N-C)"; break;
1188 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/CbCr 4:2:0 (16x16 MB, N-C)"; break;
1189 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break;
1190 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break;
d65fae92
LP		 1191 case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break;
1192 case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break;
1193 case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break;
1194 case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break;
ba300204
HV		 1195 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break;
1196 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break;
1197 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break;
1198 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break;
1199 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break;
1200 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break;
1201 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break;
1202 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break;
ba300204
HV		 1203 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break;
1204 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break;
1205 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break;
1206 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break;
1207 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break;
1208 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break;
1209 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break;
1210 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break;
1211 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break;
1212 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break;
1213 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break;
1214 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break;
d1b3437e
SA		 1215 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break;
1216 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break;
1217 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break;
1218 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break;
1219 case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break;
1220 case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break;
1221 case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break;
1222 case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break;
b9a4b13c
SA		 1223 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break;
1224 case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break;
1225 case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break;
1226 case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break;
99b74277 1227 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break;
ba300204
HV		 1228 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break;
1229 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break;
1230 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break;
1231 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break;
1232 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break;
1233 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break;
1234 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break;
66b2ab27
RRD		 1235 case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break;
1236 case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break;
48fc10aa
AP		 1237 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break;
1238 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break;
ba300204
HV		 1239 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break;
1240 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break;
1241 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break;
c28f2118
RS		 1242 case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break;
1243 case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break;
1244 case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break;
b2fe22d0
ND		 1245 case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit signed deltas"; break;
1246 case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit signed deltas"; break;
1247 case V4L2_TCH_FMT_TU16: descr = "16-bit unsigned touch data"; break;
1248 case V4L2_TCH_FMT_TU08: descr = "8-bit unsigned touch data"; break;
14d66538 1249 case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break;
5deb1c04 1250 case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break;
ba300204
HV		 1251
1252 default:
1253 /* Compressed formats */
1254 flags = V4L2_FMT_FLAG_COMPRESSED;
1255 switch (fmt->pixelformat) {
1256 /* Max description length mask: descr = "0123456789012345678901234567890" */
1257 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break;
1258 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break;
1259 case V4L2_PIX_FMT_DV: descr = "1394"; break;
1260 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break;
1261 case V4L2_PIX_FMT_H264: descr = "H.264"; break;
1262 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break;
1263 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break;
1264 case V4L2_PIX_FMT_H263: descr = "H.263"; break;
1265 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break;
1266 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break;
1267 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 part 2 ES"; break;
1268 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break;
1269 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break;
1270 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break;
1271 case V4L2_PIX_FMT_VP8: descr = "VP8"; break;
fa14a564 1272 case V4L2_PIX_FMT_VP9: descr = "VP9"; break;
ba300204
HV		 1273 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break;
1274 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break;
1275 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break;
1276 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break;
1277 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break;
1278 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break;
1279 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break;
1280 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break;
1281 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break;
1282 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break;
1283 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break;
1284 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break;
1285 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break;
1286 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break;
1287 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break;
1288 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break;
1289 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break;
1290 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break;
d4de6634 1291 case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break;
ba300204
HV		 1292 default:
1293 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat);
1294 if (fmt->description[0])
1295 return;
1296 flags = 0;
1297 snprintf(fmt->description, sz, "%c%c%c%c%s",
1298 (char)(fmt->pixelformat & 0x7f),
1299 (char)((fmt->pixelformat >> 8) & 0x7f),
1300 (char)((fmt->pixelformat >> 16) & 0x7f),
1301 (char)((fmt->pixelformat >> 24) & 0x7f),
1302 (fmt->pixelformat & (1 << 31)) ? "-BE" : "");
1303 break;
1304 }
1305 }
1306
1307 if (descr)
1308 WARN_ON(strlcpy(fmt->description, descr, sz) >= sz);
1309 fmt->flags = flags;
1310}
1311
be6c64e4
HV		 1312static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
1313 struct file *file, void *fh, void *arg)
1314{
1315 struct v4l2_fmtdesc *p = arg;
c9457952
HV		 1316 int ret = check_fmt(file, p->type);
1317
1318 if (ret)
1319 return ret;
1320 ret = -EINVAL;
be6c64e4
HV		 1321
1322 switch (p->type) {
1323 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
c9457952 1324 if (unlikely(!ops->vidioc_enum_fmt_vid_cap))
be6c64e4 1325 break;
ba300204
HV		 1326 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
1327 break;
be6c64e4 1328 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
c9457952 1329 if (unlikely(!ops->vidioc_enum_fmt_vid_cap_mplane))
be6c64e4 1330 break;
ba300204
HV		 1331 ret = ops->vidioc_enum_fmt_vid_cap_mplane(file, fh, arg);
1332 break;
be6c64e4 1333 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
c9457952 1334 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay))
be6c64e4 1335 break;
ba300204
HV		 1336 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
1337 break;
be6c64e4 1338 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
c9457952 1339 if (unlikely(!ops->vidioc_enum_fmt_vid_out))
be6c64e4 1340 break;
ba300204
HV		 1341 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg);
1342 break;
be6c64e4 1343 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
c9457952 1344 if (unlikely(!ops->vidioc_enum_fmt_vid_out_mplane))
be6c64e4 1345 break;
ba300204
HV		 1346 ret = ops->vidioc_enum_fmt_vid_out_mplane(file, fh, arg);
1347 break;
582c52cb 1348 case V4L2_BUF_TYPE_SDR_CAPTURE:
c9457952 1349 if (unlikely(!ops->vidioc_enum_fmt_sdr_cap))
582c52cb 1350 break;
ba300204
HV		 1351 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg);
1352 break;
9effc72f 1353 case V4L2_BUF_TYPE_SDR_OUTPUT:
c9457952 1354 if (unlikely(!ops->vidioc_enum_fmt_sdr_out))
9effc72f
AP		 1355 break;
1356 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg);
1357 break;
fb9ffa6a 1358 case V4L2_BUF_TYPE_META_CAPTURE:
c9457952 1359 if (unlikely(!ops->vidioc_enum_fmt_meta_cap))
fb9ffa6a
LP		 1360 break;
1361 ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg);
1362 break;
be6c64e4 1363 }
ba300204
HV		 1364 if (ret == 0)
1365 v4l_fill_fmtdesc(p);
1366 return ret;
be6c64e4
HV		 1367}
1368
1369static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
1370 struct file *file, void *fh, void *arg)
1371{
1372 struct v4l2_format *p = arg;
c9457952
HV		 1373 int ret = check_fmt(file, p->type);
1374
1375 if (ret)
1376 return ret;
d52e2381 1377
e5ce558a
HV		 1378 /*
1379 * fmt can't be cleared for these overlay types due to the 'clips'
1380 * 'clipcount' and 'bitmap' pointers in struct v4l2_window.
1381 * Those are provided by the user. So handle these two overlay types
1382 * first, and then just do a simple memset for the other types.
1383 */
1384 switch (p->type) {
1385 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1386 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: {
4d1afa51 1387 struct v4l2_clip __user *clips = p->fmt.win.clips;
e5ce558a 1388 u32 clipcount = p->fmt.win.clipcount;
4d1afa51 1389 void __user *bitmap = p->fmt.win.bitmap;
e5ce558a
HV		 1390
1391 memset(&p->fmt, 0, sizeof(p->fmt));
1392 p->fmt.win.clips = clips;
1393 p->fmt.win.clipcount = clipcount;
1394 p->fmt.win.bitmap = bitmap;
1395 break;
1396 }
1397 default:
1398 memset(&p->fmt, 0, sizeof(p->fmt));
1399 break;
1400 }
1401
be6c64e4
HV		 1402 switch (p->type) {
1403 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
c9457952 1404 if (unlikely(!ops->vidioc_g_fmt_vid_cap))
be6c64e4 1405 break;
48f2650a 1406 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
d52e2381 1407 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg);
48f2650a 1408 /* just in case the driver zeroed it again */
d52e2381
LP		 1409 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1410 return ret;
be6c64e4 1411 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
be6c64e4
HV		 1412 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
1413 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
be6c64e4 1414 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
4b20259f 1415 case V4L2_BUF_TYPE_VBI_CAPTURE:
4b20259f
HV		 1416 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
1417 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
4b20259f 1418 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1419 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
c9457952 1420 if (unlikely(!ops->vidioc_g_fmt_vid_out))
be6c64e4 1421 break;
48f2650a 1422 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
d52e2381 1423 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg);
48f2650a 1424 /* just in case the driver zeroed it again */
d52e2381
LP		 1425 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1426 return ret;
be6c64e4 1427 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
be6c64e4
HV		 1428 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
1429 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
be6c64e4 1430 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1431 case V4L2_BUF_TYPE_VBI_OUTPUT:
be6c64e4 1432 return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
be6c64e4 1433 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
be6c64e4 1434 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
582c52cb 1435 case V4L2_BUF_TYPE_SDR_CAPTURE:
582c52cb 1436 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg);
9effc72f 1437 case V4L2_BUF_TYPE_SDR_OUTPUT:
9effc72f 1438 return ops->vidioc_g_fmt_sdr_out(file, fh, arg);
fb9ffa6a 1439 case V4L2_BUF_TYPE_META_CAPTURE:
fb9ffa6a 1440 return ops->vidioc_g_fmt_meta_cap(file, fh, arg);
be6c64e4
HV		 1441 }
1442 return -EINVAL;
1443}
1444
b2fe22d0
ND		 1445static void v4l_pix_format_touch(struct v4l2_pix_format *p)
1446{
1447 /*
1448 * The v4l2_pix_format structure contains fields that make no sense for
1449 * touch. Set them to default values in this case.
1450 */
1451
1452 p->field = V4L2_FIELD_NONE;
1453 p->colorspace = V4L2_COLORSPACE_RAW;
1454 p->flags = 0;
1455 p->ycbcr_enc = 0;
1456 p->quantization = 0;
1457 p->xfer_func = 0;
1458}
1459
be6c64e4
HV		 1460static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
1461 struct file *file, void *fh, void *arg)
1462{
1463 struct v4l2_format *p = arg;
4b20259f 1464 struct video_device *vfd = video_devdata(file);
c9457952
HV		 1465 int ret = check_fmt(file, p->type);
1466
1467 if (ret)
1468 return ret;
be6c64e4 1469
77fa4e07
SK		 1470 ret = v4l_enable_media_source(vfd);
1471 if (ret)
1472 return ret;
d52e2381
LP		 1473 v4l_sanitize_format(p);
1474
be6c64e4
HV		 1475 switch (p->type) {
1476 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
c9457952 1477 if (unlikely(!ops->vidioc_s_fmt_vid_cap))
be6c64e4
HV		 1478 break;
1479 CLEAR_AFTER_FIELD(p, fmt.pix);
48f2650a
HV		 1480 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg);
1481 /* just in case the driver zeroed it again */
1482 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
c9457952 1483 if (vfd->vfl_type == VFL_TYPE_TOUCH)
b2fe22d0 1484 v4l_pix_format_touch(&p->fmt.pix);
48f2650a 1485 return ret;
be6c64e4 1486 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
c9457952 1487 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane))
be6c64e4 1488 break;
c49148e8 1489 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
be6c64e4
HV		 1490 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
1491 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
c9457952 1492 if (unlikely(!ops->vidioc_s_fmt_vid_overlay))
be6c64e4
HV		 1493 break;
1494 CLEAR_AFTER_FIELD(p, fmt.win);
1495 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
4b20259f 1496 case V4L2_BUF_TYPE_VBI_CAPTURE:
c9457952 1497 if (unlikely(!ops->vidioc_s_fmt_vbi_cap))
4b20259f
HV		 1498 break;
1499 CLEAR_AFTER_FIELD(p, fmt.vbi);
1500 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
1501 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
c9457952 1502 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap))
4b20259f
HV		 1503 break;
1504 CLEAR_AFTER_FIELD(p, fmt.sliced);
1505 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1506 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
c9457952 1507 if (unlikely(!ops->vidioc_s_fmt_vid_out))
be6c64e4
HV		 1508 break;
1509 CLEAR_AFTER_FIELD(p, fmt.pix);
48f2650a
HV		 1510 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg);
1511 /* just in case the driver zeroed it again */
1512 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1513 return ret;
be6c64e4 1514 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
c9457952 1515 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane))
be6c64e4 1516 break;
c49148e8 1517 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
be6c64e4
HV		 1518 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
1519 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
c9457952 1520 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay))
be6c64e4
HV		 1521 break;
1522 CLEAR_AFTER_FIELD(p, fmt.win);
1523 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1524 case V4L2_BUF_TYPE_VBI_OUTPUT:
c9457952 1525 if (unlikely(!ops->vidioc_s_fmt_vbi_out))
be6c64e4
HV		 1526 break;
1527 CLEAR_AFTER_FIELD(p, fmt.vbi);
1528 return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
be6c64e4 1529 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
c9457952 1530 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out))
be6c64e4
HV		 1531 break;
1532 CLEAR_AFTER_FIELD(p, fmt.sliced);
1533 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
582c52cb 1534 case V4L2_BUF_TYPE_SDR_CAPTURE:
c9457952 1535 if (unlikely(!ops->vidioc_s_fmt_sdr_cap))
582c52cb
AP		 1536 break;
1537 CLEAR_AFTER_FIELD(p, fmt.sdr);
1538 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg);
9effc72f 1539 case V4L2_BUF_TYPE_SDR_OUTPUT:
c9457952 1540 if (unlikely(!ops->vidioc_s_fmt_sdr_out))
9effc72f
AP		 1541 break;
1542 CLEAR_AFTER_FIELD(p, fmt.sdr);
1543 return ops->vidioc_s_fmt_sdr_out(file, fh, arg);
fb9ffa6a 1544 case V4L2_BUF_TYPE_META_CAPTURE:
c9457952 1545 if (unlikely(!ops->vidioc_s_fmt_meta_cap))
fb9ffa6a
LP		 1546 break;
1547 CLEAR_AFTER_FIELD(p, fmt.meta);
1548 return ops->vidioc_s_fmt_meta_cap(file, fh, arg);
be6c64e4
HV		 1549 }
1550 return -EINVAL;
1551}
1552
1553static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
1554 struct file *file, void *fh, void *arg)
1555{
1556 struct v4l2_format *p = arg;
c9457952
HV		 1557 int ret = check_fmt(file, p->type);
1558
1559 if (ret)
1560 return ret;
be6c64e4 1561
d52e2381
LP		 1562 v4l_sanitize_format(p);
1563
be6c64e4
HV		 1564 switch (p->type) {
1565 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
c9457952 1566 if (unlikely(!ops->vidioc_try_fmt_vid_cap))
be6c64e4
HV		 1567 break;
1568 CLEAR_AFTER_FIELD(p, fmt.pix);
48f2650a
HV		 1569 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg);
1570 /* just in case the driver zeroed it again */
1571 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1572 return ret;
be6c64e4 1573 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
c9457952 1574 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane))
be6c64e4 1575 break;
c49148e8 1576 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
be6c64e4
HV		 1577 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
1578 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
c9457952 1579 if (unlikely(!ops->vidioc_try_fmt_vid_overlay))
be6c64e4
HV		 1580 break;
1581 CLEAR_AFTER_FIELD(p, fmt.win);
1582 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
4b20259f 1583 case V4L2_BUF_TYPE_VBI_CAPTURE:
c9457952 1584 if (unlikely(!ops->vidioc_try_fmt_vbi_cap))
4b20259f
HV		 1585 break;
1586 CLEAR_AFTER_FIELD(p, fmt.vbi);
1587 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
1588 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
c9457952 1589 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap))
4b20259f
HV		 1590 break;
1591 CLEAR_AFTER_FIELD(p, fmt.sliced);
1592 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1593 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
c9457952 1594 if (unlikely(!ops->vidioc_try_fmt_vid_out))
be6c64e4
HV		 1595 break;
1596 CLEAR_AFTER_FIELD(p, fmt.pix);
48f2650a
HV		 1597 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg);
1598 /* just in case the driver zeroed it again */
1599 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1600 return ret;
be6c64e4 1601 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
c9457952 1602 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane))
be6c64e4 1603 break;
c49148e8 1604 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
be6c64e4
HV		 1605 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
1606 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
c9457952 1607 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay))
be6c64e4
HV		 1608 break;
1609 CLEAR_AFTER_FIELD(p, fmt.win);
1610 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1611 case V4L2_BUF_TYPE_VBI_OUTPUT:
c9457952 1612 if (unlikely(!ops->vidioc_try_fmt_vbi_out))
be6c64e4
HV		 1613 break;
1614 CLEAR_AFTER_FIELD(p, fmt.vbi);
1615 return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
be6c64e4 1616 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
c9457952 1617 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out))
be6c64e4
HV		 1618 break;
1619 CLEAR_AFTER_FIELD(p, fmt.sliced);
1620 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
582c52cb 1621 case V4L2_BUF_TYPE_SDR_CAPTURE:
c9457952 1622 if (unlikely(!ops->vidioc_try_fmt_sdr_cap))
582c52cb
AP		 1623 break;
1624 CLEAR_AFTER_FIELD(p, fmt.sdr);
1625 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg);
9effc72f 1626 case V4L2_BUF_TYPE_SDR_OUTPUT:
c9457952 1627 if (unlikely(!ops->vidioc_try_fmt_sdr_out))
9effc72f
AP		 1628 break;
1629 CLEAR_AFTER_FIELD(p, fmt.sdr);
1630 return ops->vidioc_try_fmt_sdr_out(file, fh, arg);
fb9ffa6a 1631 case V4L2_BUF_TYPE_META_CAPTURE:
c9457952 1632 if (unlikely(!ops->vidioc_try_fmt_meta_cap))
fb9ffa6a
LP		 1633 break;
1634 CLEAR_AFTER_FIELD(p, fmt.meta);
1635 return ops->vidioc_try_fmt_meta_cap(file, fh, arg);
be6c64e4
HV		 1636 }
1637 return -EINVAL;
1638}
1639
e325b244
HV		 1640static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
1641 struct file *file, void *fh, void *arg)
1642{
1643 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
1644}
1645
1646static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
1647 struct file *file, void *fh, void *arg)
1648{
1649 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
1650}
1651
4b1e2e4d
HV		 1652static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,
1653 struct file *file, void *fh, void *arg)
1654{
1655 struct video_device *vfd = video_devdata(file);
1656 struct v4l2_tuner *p = arg;
82b655bf 1657 int err;
4b1e2e4d
HV		 1658
1659 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1660 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
82b655bf
HV		 1661 err = ops->vidioc_g_tuner(file, fh, p);
1662 if (!err)
1663 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1664 return err;
4b1e2e4d
HV		 1665}
1666
1667static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
1668 struct file *file, void *fh, void *arg)
1669{
1670 struct video_device *vfd = video_devdata(file);
1671 struct v4l2_tuner *p = arg;
77fa4e07 1672 int ret;
4b1e2e4d 1673
77fa4e07
SK		 1674 ret = v4l_enable_media_source(vfd);
1675 if (ret)
1676 return ret;
4b1e2e4d
HV		 1677 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1678 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1679 return ops->vidioc_s_tuner(file, fh, p);
1680}
1681
82b655bf
HV		 1682static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,
1683 struct file *file, void *fh, void *arg)
1684{
4124a3c4 1685 struct video_device *vfd = video_devdata(file);
82b655bf
HV		 1686 struct v4l2_modulator *p = arg;
1687 int err;
1688
4124a3c4
AP		 1689 if (vfd->vfl_type == VFL_TYPE_RADIO)
1690 p->type = V4L2_TUNER_RADIO;
1691
82b655bf
HV		 1692 err = ops->vidioc_g_modulator(file, fh, p);
1693 if (!err)
1694 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1695 return err;
1696}
1697
4124a3c4
AP		 1698static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops,
1699 struct file *file, void *fh, void *arg)
1700{
1701 struct video_device *vfd = video_devdata(file);
1702 struct v4l2_modulator *p = arg;
1703
1704 if (vfd->vfl_type == VFL_TYPE_RADIO)
1705 p->type = V4L2_TUNER_RADIO;
1706
1707 return ops->vidioc_s_modulator(file, fh, p);
1708}
1709
4b1e2e4d
HV		 1710static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
1711 struct file *file, void *fh, void *arg)
1712{
1713 struct video_device *vfd = video_devdata(file);
1714 struct v4l2_frequency *p = arg;
1715
84099a28 1716 if (vfd->vfl_type == VFL_TYPE_SDR)
f3c3ecec 1717 p->type = V4L2_TUNER_SDR;
84099a28
AP		 1718 else
1719 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1720 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
4b1e2e4d
HV		 1721 return ops->vidioc_g_frequency(file, fh, p);
1722}
1723
1724static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
1725 struct file *file, void *fh, void *arg)
1726{
1727 struct video_device *vfd = video_devdata(file);
b530a447 1728 const struct v4l2_frequency *p = arg;
4b1e2e4d 1729 enum v4l2_tuner_type type;
77fa4e07 1730 int ret;
4b1e2e4d 1731
77fa4e07
SK		 1732 ret = v4l_enable_media_source(vfd);
1733 if (ret)
1734 return ret;
84099a28 1735 if (vfd->vfl_type == VFL_TYPE_SDR) {
f3c3ecec 1736 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)
84099a28
AP		 1737 return -EINVAL;
1738 } else {
1739 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1740 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1741 if (type != p->type)
1742 return -EINVAL;
1743 }
4b1e2e4d
HV		 1744 return ops->vidioc_s_frequency(file, fh, p);
1745}
1746
1747static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
1748 struct file *file, void *fh, void *arg)
1749{
1750 struct video_device *vfd = video_devdata(file);
1751 struct v4l2_standard *p = arg;
1752 v4l2_std_id id = vfd->tvnorms, curr_id = 0;
1753 unsigned int index = p->index, i, j = 0;
1754 const char *descr = "";
1755
a5338190
HV		 1756 /* Return -ENODATA if the tvnorms for the current input
1757 or output is 0, meaning that it doesn't support this API. */
1758 if (id == 0)
1759 return -ENODATA;
1760
4b1e2e4d
HV		 1761 /* Return norm array in a canonical way */
1762 for (i = 0; i <= index && id; i++) {
1763 /* last std value in the standards array is 0, so this
1764 while always ends there since (id & 0) == 0. */
1765 while ((id & standards[j].std) != standards[j].std)
1766 j++;
1767 curr_id = standards[j].std;
1768 descr = standards[j].descr;
1769 j++;
1770 if (curr_id == 0)
1771 break;
1772 if (curr_id != V4L2_STD_PAL &&
1773 curr_id != V4L2_STD_SECAM &&
1774 curr_id != V4L2_STD_NTSC)
1775 id &= ~curr_id;
1776 }
1777 if (i <= index)
1778 return -EINVAL;
1779
1780 v4l2_video_std_construct(p, curr_id, descr);
1781 return 0;
1782}
1783
4b1e2e4d
HV		 1784static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
1785 struct file *file, void *fh, void *arg)
1786{
1787 struct video_device *vfd = video_devdata(file);
314527ac 1788 v4l2_std_id id = *(v4l2_std_id *)arg, norm;
77fa4e07 1789 int ret;
4b1e2e4d 1790
77fa4e07
SK		 1791 ret = v4l_enable_media_source(vfd);
1792 if (ret)
1793 return ret;
314527ac 1794 norm = id & vfd->tvnorms;
4b1e2e4d
HV		 1795 if (vfd->tvnorms && !norm) /* Check if std is supported */
1796 return -EINVAL;
1797
1798 /* Calls the specific handler */
ca371575 1799 return ops->vidioc_s_std(file, fh, norm);
4b1e2e4d
HV		 1800}
1801
1802static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
1803 struct file *file, void *fh, void *arg)
1804{
1805 struct video_device *vfd = video_devdata(file);
1806 v4l2_std_id *p = arg;
77fa4e07 1807 int ret;
4b1e2e4d 1808
77fa4e07
SK		 1809 ret = v4l_enable_media_source(vfd);
1810 if (ret)
1811 return ret;
4b1e2e4d 1812 /*
1a2c6866
HV		 1813 * If no signal is detected, then the driver should return
1814 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with
1815 * any standards that do not apply removed.
1816 *
4b1e2e4d
HV		 1817 * This means that tuners, audio and video decoders can join
1818 * their efforts to improve the standards detection.
1819 */
1820 *p = vfd->tvnorms;
1821 return ops->vidioc_querystd(file, fh, arg);
1822}
1823
1824static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
1825 struct file *file, void *fh, void *arg)
1826{
1827 struct video_device *vfd = video_devdata(file);
1828 struct v4l2_hw_freq_seek *p = arg;
1829 enum v4l2_tuner_type type;
77fa4e07 1830 int ret;
4b1e2e4d 1831
77fa4e07
SK		 1832 ret = v4l_enable_media_source(vfd);
1833 if (ret)
1834 return ret;
84099a28
AP		 1835 /* s_hw_freq_seek is not supported for SDR for now */
1836 if (vfd->vfl_type == VFL_TYPE_SDR)
1837 return -EINVAL;
1838
4b1e2e4d
HV		 1839 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1840 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1841 if (p->type != type)
1842 return -EINVAL;
1843 return ops->vidioc_s_hw_freq_seek(file, fh, p);
1844}
1845
737c097b
HV		 1846static int v4l_overlay(const struct v4l2_ioctl_ops *ops,
1847 struct file *file, void *fh, void *arg)
1848{
1849 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg);
1850}
1851
eb3728ed
HV		 1852static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,
1853 struct file *file, void *fh, void *arg)
1854{
1855 struct v4l2_requestbuffers *p = arg;
4b20259f 1856 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1857
1858 if (ret)
1859 return ret;
1860
633c98e5 1861 CLEAR_AFTER_FIELD(p, memory);
eb3728ed
HV		 1862
1863 return ops->vidioc_reqbufs(file, fh, p);
1864}
1865
1866static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,
1867 struct file *file, void *fh, void *arg)
1868{
1869 struct v4l2_buffer *p = arg;
4b20259f 1870 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1871
1872 return ret ? ret : ops->vidioc_querybuf(file, fh, p);
1873}
1874
1875static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,
1876 struct file *file, void *fh, void *arg)
1877{
1878 struct v4l2_buffer *p = arg;
4b20259f 1879 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1880
1881 return ret ? ret : ops->vidioc_qbuf(file, fh, p);
1882}
1883
1884static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,
1885 struct file *file, void *fh, void *arg)
1886{
1887 struct v4l2_buffer *p = arg;
4b20259f 1888 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1889
1890 return ret ? ret : ops->vidioc_dqbuf(file, fh, p);
1891}
1892
1893static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
1894 struct file *file, void *fh, void *arg)
1895{
1896 struct v4l2_create_buffers *create = arg;
4b20259f 1897 int ret = check_fmt(file, create->format.type);
eb3728ed 1898
d52e2381
LP		 1899 if (ret)
1900 return ret;
1901
5d351251
HV		 1902 CLEAR_AFTER_FIELD(create, format);
1903
d52e2381
LP		 1904 v4l_sanitize_format(&create->format);
1905
1906 ret = ops->vidioc_create_bufs(file, fh, create);
1907
1908 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1909 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1910 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1911
1912 return ret;
eb3728ed
HV		 1913}
1914
1915static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
1916 struct file *file, void *fh, void *arg)
1917{
1918 struct v4l2_buffer *b = arg;
4b20259f 1919 int ret = check_fmt(file, b->type);
eb3728ed
HV		 1920
1921 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
1922}
1923
1924static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
1925 struct file *file, void *fh, void *arg)
1926{
eb3728ed
HV		 1927 struct v4l2_streamparm *p = arg;
1928 v4l2_std_id std;
4b20259f 1929 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1930
1931 if (ret)
1932 return ret;
1933 if (ops->vidioc_g_parm)
1934 return ops->vidioc_g_parm(file, fh, p);
eb3728ed
HV		 1935 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1936 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1937 return -EINVAL;
1938 p->parm.capture.readbuffers = 2;
ca371575 1939 ret = ops->vidioc_g_std(file, fh, &std);
eb3728ed 1940 if (ret == 0)
ca371575 1941 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe);
eb3728ed
HV		 1942 return ret;
1943}
1944
1945static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
1946 struct file *file, void *fh, void *arg)
1947{
1948 struct v4l2_streamparm *p = arg;
4b20259f 1949 int ret = check_fmt(file, p->type);
eb3728ed 1950
3bc27994
HV		 1951 if (ret)
1952 return ret;
1953
1954 /* Note: extendedmode is never used in drivers */
1955 if (V4L2_TYPE_IS_OUTPUT(p->type)) {
1956 memset(p->parm.output.reserved, 0,
1957 sizeof(p->parm.output.reserved));
1958 p->parm.output.extendedmode = 0;
1959 p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY;
1960 } else {
1961 memset(p->parm.capture.reserved, 0,
1962 sizeof(p->parm.capture.reserved));
1963 p->parm.capture.extendedmode = 0;
1964 p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY;
1965 }
1966 return ops->vidioc_s_parm(file, fh, p);
eb3728ed
HV		 1967}
1968
efbceecd
HV		 1969static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,
1970 struct file *file, void *fh, void *arg)
1971{
1972 struct video_device *vfd = video_devdata(file);
1973 struct v4l2_queryctrl *p = arg;
7a3ed2d9
HV		 1974 struct v4l2_fh *vfh =
1975 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1976
1977 if (vfh && vfh->ctrl_handler)
1978 return v4l2_queryctrl(vfh->ctrl_handler, p);
1979 if (vfd->ctrl_handler)
1980 return v4l2_queryctrl(vfd->ctrl_handler, p);
1981 if (ops->vidioc_queryctrl)
1982 return ops->vidioc_queryctrl(file, fh, p);
1983 return -ENOTTY;
1984}
1985
e6bee368
HV		 1986static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops,
1987 struct file *file, void *fh, void *arg)
1988{
1989 struct video_device *vfd = video_devdata(file);
1990 struct v4l2_query_ext_ctrl *p = arg;
1991 struct v4l2_fh *vfh =
1992 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1993
1994 if (vfh && vfh->ctrl_handler)
1995 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p);
1996 if (vfd->ctrl_handler)
1997 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p);
1998 if (ops->vidioc_query_ext_ctrl)
1999 return ops->vidioc_query_ext_ctrl(file, fh, p);
2000 return -ENOTTY;
2001}
2002
efbceecd
HV		 2003static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,
2004 struct file *file, void *fh, void *arg)
2005{
2006 struct video_device *vfd = video_devdata(file);
2007 struct v4l2_querymenu *p = arg;
7a3ed2d9
HV		 2008 struct v4l2_fh *vfh =
2009 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 2010
2011 if (vfh && vfh->ctrl_handler)
2012 return v4l2_querymenu(vfh->ctrl_handler, p);
2013 if (vfd->ctrl_handler)
2014 return v4l2_querymenu(vfd->ctrl_handler, p);
2015 if (ops->vidioc_querymenu)
2016 return ops->vidioc_querymenu(file, fh, p);
2017 return -ENOTTY;
2018}
2019
2020static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops,
2021 struct file *file, void *fh, void *arg)
2022{
2023 struct video_device *vfd = video_devdata(file);
2024 struct v4l2_control *p = arg;
7a3ed2d9
HV		 2025 struct v4l2_fh *vfh =
2026 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 2027 struct v4l2_ext_controls ctrls;
2028 struct v4l2_ext_control ctrl;
2029
2030 if (vfh && vfh->ctrl_handler)
2031 return v4l2_g_ctrl(vfh->ctrl_handler, p);
2032 if (vfd->ctrl_handler)
2033 return v4l2_g_ctrl(vfd->ctrl_handler, p);
2034 if (ops->vidioc_g_ctrl)
2035 return ops->vidioc_g_ctrl(file, fh, p);
2036 if (ops->vidioc_g_ext_ctrls == NULL)
2037 return -ENOTTY;
2038
0f8017be 2039 ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
efbceecd
HV		 2040 ctrls.count = 1;
2041 ctrls.controls = &ctrl;
2042 ctrl.id = p->id;
2043 ctrl.value = p->value;
2044 if (check_ext_ctrls(&ctrls, 1)) {
2045 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
2046
2047 if (ret == 0)
2048 p->value = ctrl.value;
2049 return ret;
2050 }
2051 return -EINVAL;
2052}
2053
2054static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,
2055 struct file *file, void *fh, void *arg)
2056{
2057 struct video_device *vfd = video_devdata(file);
2058 struct v4l2_control *p = arg;
7a3ed2d9
HV		 2059 struct v4l2_fh *vfh =
2060 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 2061 struct v4l2_ext_controls ctrls;
2062 struct v4l2_ext_control ctrl;
2063
2064 if (vfh && vfh->ctrl_handler)
2065 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
2066 if (vfd->ctrl_handler)
2067 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
2068 if (ops->vidioc_s_ctrl)
2069 return ops->vidioc_s_ctrl(file, fh, p);
2070 if (ops->vidioc_s_ext_ctrls == NULL)
2071 return -ENOTTY;
2072
0f8017be 2073 ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
efbceecd
HV		 2074 ctrls.count = 1;
2075 ctrls.controls = &ctrl;
2076 ctrl.id = p->id;
2077 ctrl.value = p->value;
2078 if (check_ext_ctrls(&ctrls, 1))
2079 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
2080 return -EINVAL;
2081}
2082
2083static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2084 struct file *file, void *fh, void *arg)
2085{
2086 struct video_device *vfd = video_devdata(file);
2087 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 2088 struct v4l2_fh *vfh =
2089 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 2090
2091 p->error_idx = p->count;
2092 if (vfh && vfh->ctrl_handler)
2093 return v4l2_g_ext_ctrls(vfh->ctrl_handler, p);
2094 if (vfd->ctrl_handler)
2095 return v4l2_g_ext_ctrls(vfd->ctrl_handler, p);
2096 if (ops->vidioc_g_ext_ctrls == NULL)
2097 return -ENOTTY;
2098 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :
2099 -EINVAL;
2100}
2101
2102static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2103 struct file *file, void *fh, void *arg)
2104{
2105 struct video_device *vfd = video_devdata(file);
2106 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 2107 struct v4l2_fh *vfh =
2108 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 2109
2110 p->error_idx = p->count;
2111 if (vfh && vfh->ctrl_handler)
2112 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, p);
2113 if (vfd->ctrl_handler)
2114 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, p);
2115 if (ops->vidioc_s_ext_ctrls == NULL)
2116 return -ENOTTY;
2117 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :
2118 -EINVAL;
2119}
2120
2121static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2122 struct file *file, void *fh, void *arg)
2123{
2124 struct video_device *vfd = video_devdata(file);
2125 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 2126 struct v4l2_fh *vfh =
2127 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 2128
2129 p->error_idx = p->count;
2130 if (vfh && vfh->ctrl_handler)
2131 return v4l2_try_ext_ctrls(vfh->ctrl_handler, p);
2132 if (vfd->ctrl_handler)
2133 return v4l2_try_ext_ctrls(vfd->ctrl_handler, p);
2134 if (ops->vidioc_try_ext_ctrls == NULL)
2135 return -ENOTTY;
2136 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :
2137 -EINVAL;
2138}
2139
eaec420f
HV		 2140/*
2141 * The selection API specified originally that the _MPLANE buffer types
2142 * shouldn't be used. The reasons for this are lost in the mists of time
2143 * (or just really crappy memories). Regardless, this is really annoying
2144 * for userspace. So to keep things simple we map _MPLANE buffer types
2145 * to their 'regular' counterparts before calling the driver. And we
2146 * restore it afterwards. This way applications can use either buffer
2147 * type and drivers don't need to check for both.
2148 */
2149static int v4l_g_selection(const struct v4l2_ioctl_ops *ops,
2150 struct file *file, void *fh, void *arg)
2151{
2152 struct v4l2_selection *p = arg;
2153 u32 old_type = p->type;
2154 int ret;
2155
2156 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2157 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2158 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2159 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2160 ret = ops->vidioc_g_selection(file, fh, p);
2161 p->type = old_type;
2162 return ret;
2163}
2164
2165static int v4l_s_selection(const struct v4l2_ioctl_ops *ops,
2166 struct file *file, void *fh, void *arg)
2167{
2168 struct v4l2_selection *p = arg;
2169 u32 old_type = p->type;
2170 int ret;
2171
2172 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2173 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2174 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2175 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2176 ret = ops->vidioc_s_selection(file, fh, p);
2177 p->type = old_type;
2178 return ret;
2179}
2180
d84f2d94
HV		 2181static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
2182 struct file *file, void *fh, void *arg)
2183{
2184 struct v4l2_crop *p = arg;
2185 struct v4l2_selection s = {
2186 .type = p->type,
2187 };
2188 int ret;
2189
2190 if (ops->vidioc_g_crop)
2191 return ops->vidioc_g_crop(file, fh, p);
2192 /* simulate capture crop using selection api */
2193
2194 /* crop means compose for output devices */
2195 if (V4L2_TYPE_IS_OUTPUT(p->type))
2196 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
2197 else
2198 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
2199
eaec420f 2200 ret = v4l_g_selection(ops, file, fh, &s);
d84f2d94
HV		 2201
2202 /* copying results to old structure on success */
2203 if (!ret)
2204 p->c = s.r;
2205 return ret;
2206}
2207
2208static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
2209 struct file *file, void *fh, void *arg)
2210{
2211 struct v4l2_crop *p = arg;
2212 struct v4l2_selection s = {
2213 .type = p->type,
2214 .r = p->c,
2215 };
2216
2217 if (ops->vidioc_s_crop)
2218 return ops->vidioc_s_crop(file, fh, p);
2219 /* simulate capture crop using selection api */
2220
2221 /* crop means compose for output devices */
2222 if (V4L2_TYPE_IS_OUTPUT(p->type))
2223 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
2224 else
2225 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
2226
eaec420f 2227 return v4l_s_selection(ops, file, fh, &s);
d84f2d94
HV		 2228}
2229
2230static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
2231 struct file *file, void *fh, void *arg)
2232{
2233 struct v4l2_cropcap *p = arg;
95dd7b7e
HV		 2234 struct v4l2_selection s = { .type = p->type };
2235 int ret = 0;
d84f2d94 2236
95dd7b7e
HV		 2237 /* setting trivial pixelaspect */
2238 p->pixelaspect.numerator = 1;
2239 p->pixelaspect.denominator = 1;
d84f2d94 2240
95dd7b7e
HV		 2241 /*
2242 * The determine_valid_ioctls() call already should ensure
2243 * that this can never happen, but just in case...
2244 */
1ca830b1 2245 if (WARN_ON(!ops->vidioc_cropcap && !ops->vidioc_g_selection))
95dd7b7e 2246 return -ENOTTY;
d84f2d94 2247
95dd7b7e
HV		 2248 if (ops->vidioc_cropcap)
2249 ret = ops->vidioc_cropcap(file, fh, p);
d84f2d94 2250
95dd7b7e
HV		 2251 if (!ops->vidioc_g_selection)
2252 return ret;
d84f2d94 2253
95dd7b7e
HV		 2254 /*
2255 * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the
2256 * square pixel aspect ratio in that case.
2257 */
2258 if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD)
2259 return ret;
d84f2d94 2260
95dd7b7e 2261 /* Use g_selection() to fill in the bounds and defrect rectangles */
9409945c 2262
95dd7b7e
HV		 2263 /* obtaining bounds */
2264 if (V4L2_TYPE_IS_OUTPUT(p->type))
2265 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
2266 else
2267 s.target = V4L2_SEL_TGT_CROP_BOUNDS;
2268
eaec420f 2269 ret = v4l_g_selection(ops, file, fh, &s);
95dd7b7e
HV		 2270 if (ret)
2271 return ret;
2272 p->bounds = s.r;
2273
2274 /* obtaining defrect */
2275 if (V4L2_TYPE_IS_OUTPUT(p->type))
2276 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
2277 else
2278 s.target = V4L2_SEL_TGT_CROP_DEFAULT;
2279
eaec420f 2280 ret = v4l_g_selection(ops, file, fh, &s);
95dd7b7e
HV		 2281 if (ret)
2282 return ret;
2283 p->defrect = s.r;
9409945c 2284
d84f2d94
HV		 2285 return 0;
2286}
2287
f16f77b0
HV		 2288static int v4l_log_status(const struct v4l2_ioctl_ops *ops,
2289 struct file *file, void *fh, void *arg)
2290{
2291 struct video_device *vfd = video_devdata(file);
2292 int ret;
2293
2294 if (vfd->v4l2_dev)
2295 pr_info("%s: ================= START STATUS =================\n",
2296 vfd->v4l2_dev->name);
2297 ret = ops->vidioc_log_status(file, fh);
2298 if (vfd->v4l2_dev)
2299 pr_info("%s: ================== END STATUS ==================\n",
2300 vfd->v4l2_dev->name);
2301 return ret;
2302}
2303
2304static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
2305 struct file *file, void *fh, void *arg)
2306{
2307#ifdef CONFIG_VIDEO_ADV_DEBUG
2308 struct v4l2_dbg_register *p = arg;
79b0c640
HV		 2309 struct video_device *vfd = video_devdata(file);
2310 struct v4l2_subdev *sd;
2311 int idx = 0;
f16f77b0
HV		 2312
2313 if (!capable(CAP_SYS_ADMIN))
2314 return -EPERM;
3eef2510 2315 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
79b0c640
HV		 2316 if (vfd->v4l2_dev == NULL)
2317 return -EINVAL;
3eef2510
HV		 2318 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2319 if (p->match.addr == idx++)
79b0c640 2320 return v4l2_subdev_call(sd, core, g_register, p);
79b0c640
HV		 2321 return -EINVAL;
2322 }
191b79b0
HV		 2323 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2324 (ops->vidioc_g_chip_info || p->match.addr == 0))
79b0c640
HV		 2325 return ops->vidioc_g_register(file, fh, p);
2326 return -EINVAL;
f16f77b0
HV		 2327#else
2328 return -ENOTTY;
2329#endif
2330}
2331
2332static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
2333 struct file *file, void *fh, void *arg)
2334{
2335#ifdef CONFIG_VIDEO_ADV_DEBUG
977ba3b1 2336 const struct v4l2_dbg_register *p = arg;
79b0c640
HV		 2337 struct video_device *vfd = video_devdata(file);
2338 struct v4l2_subdev *sd;
2339 int idx = 0;
f16f77b0
HV		 2340
2341 if (!capable(CAP_SYS_ADMIN))
2342 return -EPERM;
3eef2510 2343 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
79b0c640
HV		 2344 if (vfd->v4l2_dev == NULL)
2345 return -EINVAL;
3eef2510
HV		 2346 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2347 if (p->match.addr == idx++)
79b0c640 2348 return v4l2_subdev_call(sd, core, s_register, p);
79b0c640
HV		 2349 return -EINVAL;
2350 }
191b79b0
HV		 2351 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2352 (ops->vidioc_g_chip_info || p->match.addr == 0))
79b0c640
HV		 2353 return ops->vidioc_s_register(file, fh, p);
2354 return -EINVAL;
f16f77b0
HV		 2355#else
2356 return -ENOTTY;
2357#endif
2358}
2359
96b03d2a 2360static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,
79b0c640
HV		 2361 struct file *file, void *fh, void *arg)
2362{
cd634f1b 2363#ifdef CONFIG_VIDEO_ADV_DEBUG
79b0c640 2364 struct video_device *vfd = video_devdata(file);
96b03d2a 2365 struct v4l2_dbg_chip_info *p = arg;
79b0c640
HV		 2366 struct v4l2_subdev *sd;
2367 int idx = 0;
2368
2369 switch (p->match.type) {
2370 case V4L2_CHIP_MATCH_BRIDGE:
79b0c640
HV		 2371 if (ops->vidioc_s_register)
2372 p->flags |= V4L2_CHIP_FL_WRITABLE;
2373 if (ops->vidioc_g_register)
2374 p->flags |= V4L2_CHIP_FL_READABLE;
1c1d86a1 2375 strlcpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));
96b03d2a
HV		 2376 if (ops->vidioc_g_chip_info)
2377 return ops->vidioc_g_chip_info(file, fh, arg);
0f0fe4b9
HV		 2378 if (p->match.addr)
2379 return -EINVAL;
79b0c640
HV		 2380 return 0;
2381
3eef2510 2382 case V4L2_CHIP_MATCH_SUBDEV:
79b0c640
HV		 2383 if (vfd->v4l2_dev == NULL)
2384 break;
2385 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {
3eef2510
HV		 2386 if (p->match.addr != idx++)
2387 continue;
2388 if (sd->ops->core && sd->ops->core->s_register)
2389 p->flags |= V4L2_CHIP_FL_WRITABLE;
2390 if (sd->ops->core && sd->ops->core->g_register)
2391 p->flags |= V4L2_CHIP_FL_READABLE;
2392 strlcpy(p->name, sd->name, sizeof(p->name));
2393 return 0;
79b0c640
HV		 2394 }
2395 break;
2396 }
2397 return -EINVAL;
cd634f1b
HV		 2398#else
2399 return -ENOTTY;
2400#endif
79b0c640
HV		 2401}
2402
458aa4a6
HV		 2403static int v4l_dqevent(const struct v4l2_ioctl_ops *ops,
2404 struct file *file, void *fh, void *arg)
2405{
2406 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK);
2407}
2408
2409static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,
2410 struct file *file, void *fh, void *arg)
2411{
2412 return ops->vidioc_subscribe_event(fh, arg);
2413}
2414
2415static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,
2416 struct file *file, void *fh, void *arg)
2417{
2418 return ops->vidioc_unsubscribe_event(fh, arg);
2419}
2420
2421static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,
2422 struct file *file, void *fh, void *arg)
2423{
2424 struct v4l2_sliced_vbi_cap *p = arg;
4b20259f
HV		 2425 int ret = check_fmt(file, p->type);
2426
2427 if (ret)
2428 return ret;
458aa4a6
HV		 2429
2430 /* Clear up to type, everything after type is zeroed already */
2431 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
2432
2433 return ops->vidioc_g_sliced_vbi_cap(file, fh, p);
2434}
2435
82b655bf
HV		 2436static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
2437 struct file *file, void *fh, void *arg)
2438{
2439 struct video_device *vfd = video_devdata(file);
2440 struct v4l2_frequency_band *p = arg;
2441 enum v4l2_tuner_type type;
2442 int err;
2443
84099a28 2444 if (vfd->vfl_type == VFL_TYPE_SDR) {
f3c3ecec 2445 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)
84099a28
AP		 2446 return -EINVAL;
2447 type = p->type;
2448 } else {
2449 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2450 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2451 if (type != p->type)
2452 return -EINVAL;
2453 }
a7f404af
HV		 2454 if (ops->vidioc_enum_freq_bands) {
2455 err = ops->vidioc_enum_freq_bands(file, fh, p);
2456 if (err != -ENOTTY)
2457 return err;
2458 }
73f35418 2459 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) {
82b655bf
HV		 2460 struct v4l2_tuner t = {
2461 .index = p->tuner,
2462 .type = type,
2463 };
2464
aa4d9b53
HV		 2465 if (p->index)
2466 return -EINVAL;
82b655bf
HV		 2467 err = ops->vidioc_g_tuner(file, fh, &t);
2468 if (err)
2469 return err;
2470 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2471 p->rangelow = t.rangelow;
2472 p->rangehigh = t.rangehigh;
2473 p->modulation = (type == V4L2_TUNER_RADIO) ?
2474 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2475 return 0;
2476 }
73f35418 2477 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) {
82b655bf
HV		 2478 struct v4l2_modulator m = {
2479 .index = p->tuner,
2480 };
2481
2482 if (type != V4L2_TUNER_RADIO)
2483 return -EINVAL;
aa4d9b53
HV		 2484 if (p->index)
2485 return -EINVAL;
82b655bf
HV		 2486 err = ops->vidioc_g_modulator(file, fh, &m);
2487 if (err)
2488 return err;
2489 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2490 p->rangelow = m.rangelow;
2491 p->rangehigh = m.rangehigh;
2492 p->modulation = (type == V4L2_TUNER_RADIO) ?
2493 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2494 return 0;
2495 }
2496 return -ENOTTY;
2497}
2498
4839e6c2
HV		 2499struct v4l2_ioctl_info {
2500 unsigned int ioctl;
27cd2aba 2501 u32 flags;
4839e6c2 2502 const char * const name;
86748f35
HV		 2503 union {
2504 u32 offset;
2505 int (*func)(const struct v4l2_ioctl_ops *ops,
2506 struct file *file, void *fh, void *p);
26ddcbcc 2507 } u;
86748f35 2508 void (*debug)(const void *arg, bool write_only);
4839e6c2
HV		 2509};
2510
2511/* This control needs a priority check */
043f77ed 2512#define INFO_FL_PRIO (1 << 0)
4839e6c2 2513/* This control can be valid if the filehandle passes a control handler. */
043f77ed 2514#define INFO_FL_CTRL (1 << 1)
86748f35 2515/* This is a standard ioctl, no need for special code */
043f77ed 2516#define INFO_FL_STD (1 << 2)
86748f35 2517/* This is ioctl has its own function */
043f77ed 2518#define INFO_FL_FUNC (1 << 3)
5a5adf6b 2519/* Queuing ioctl */
043f77ed
HV		 2520#define INFO_FL_QUEUE (1 << 4)
2521/* Always copy back result, even on error */
2522#define INFO_FL_ALWAYS_COPY (1 << 5)
27cd2aba
HV		 2523/* Zero struct from after the field to the end */
2524#define INFO_FL_CLEAR(v4l2_struct, field) \
2525 ((offsetof(struct v4l2_struct, field) + \
2526 sizeof(((struct v4l2_struct *)0)->field)) << 16)
043f77ed 2527#define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
4839e6c2 2528
86748f35
HV		 2529#define IOCTL_INFO_STD(_ioctl, _vidioc, _debug, _flags) \
2530 [_IOC_NR(_ioctl)] = { \
2531 .ioctl = _ioctl, \
2532 .flags = _flags | INFO_FL_STD, \
2533 .name = #_ioctl, \
26ddcbcc 2534 .u.offset = offsetof(struct v4l2_ioctl_ops, _vidioc), \
86748f35
HV		 2535 .debug = _debug, \
2536 }
2537
2538#define IOCTL_INFO_FNC(_ioctl, _func, _debug, _flags) \
2539 [_IOC_NR(_ioctl)] = { \
2540 .ioctl = _ioctl, \
2541 .flags = _flags | INFO_FL_FUNC, \
2542 .name = #_ioctl, \
26ddcbcc 2543 .u.func = _func, \
86748f35
HV		 2544 .debug = _debug, \
2545 }
2546
4839e6c2 2547static struct v4l2_ioctl_info v4l2_ioctls[] = {
59076122 2548 IOCTL_INFO_FNC(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
be6c64e4 2549 IOCTL_INFO_FNC(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)),
e5ce558a 2550 IOCTL_INFO_FNC(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0),
be6c64e4 2551 IOCTL_INFO_FNC(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
5a5adf6b
HV		 2552 IOCTL_INFO_FNC(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2553 IOCTL_INFO_FNC(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
be6c64e4
HV		 2554 IOCTL_INFO_STD(VIDIOC_G_FBUF, vidioc_g_fbuf, v4l_print_framebuffer, 0),
2555 IOCTL_INFO_STD(VIDIOC_S_FBUF, vidioc_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
737c097b 2556 IOCTL_INFO_FNC(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO),
5a5adf6b 2557 IOCTL_INFO_FNC(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),
b799d09a 2558 IOCTL_INFO_STD(VIDIOC_EXPBUF, vidioc_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)),
5a5adf6b
HV		 2559 IOCTL_INFO_FNC(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),
2560 IOCTL_INFO_FNC(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2561 IOCTL_INFO_FNC(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
eb3728ed
HV		 2562 IOCTL_INFO_FNC(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
2563 IOCTL_INFO_FNC(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
ca371575 2564 IOCTL_INFO_STD(VIDIOC_G_STD, vidioc_g_std, v4l_print_std, 0),
4b1e2e4d
HV		 2565 IOCTL_INFO_FNC(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
2566 IOCTL_INFO_FNC(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
59076122 2567 IOCTL_INFO_FNC(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
efbceecd
HV		 2568 IOCTL_INFO_FNC(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
2569 IOCTL_INFO_FNC(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
4b1e2e4d
HV		 2570 IOCTL_INFO_FNC(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
2571 IOCTL_INFO_FNC(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
59076122
HV		 2572 IOCTL_INFO_STD(VIDIOC_G_AUDIO, vidioc_g_audio, v4l_print_audio, 0),
2573 IOCTL_INFO_STD(VIDIOC_S_AUDIO, vidioc_s_audio, v4l_print_audio, INFO_FL_PRIO),
efbceecd
HV		 2574 IOCTL_INFO_FNC(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
2575 IOCTL_INFO_FNC(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
59076122
HV		 2576 IOCTL_INFO_STD(VIDIOC_G_INPUT, vidioc_g_input, v4l_print_u32, 0),
2577 IOCTL_INFO_FNC(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
043f77ed
HV		 2578 IOCTL_INFO_STD(VIDIOC_G_EDID, vidioc_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY),
2579 IOCTL_INFO_STD(VIDIOC_S_EDID, vidioc_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY),
59076122
HV		 2580 IOCTL_INFO_STD(VIDIOC_G_OUTPUT, vidioc_g_output, v4l_print_u32, 0),
2581 IOCTL_INFO_FNC(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
2582 IOCTL_INFO_FNC(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
2583 IOCTL_INFO_STD(VIDIOC_G_AUDOUT, vidioc_g_audout, v4l_print_audioout, 0),
2584 IOCTL_INFO_STD(VIDIOC_S_AUDOUT, vidioc_s_audout, v4l_print_audioout, INFO_FL_PRIO),
82b655bf 2585 IOCTL_INFO_FNC(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
4124a3c4 2586 IOCTL_INFO_FNC(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
4b1e2e4d
HV		 2587 IOCTL_INFO_FNC(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
2588 IOCTL_INFO_FNC(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
d84f2d94
HV		 2589 IOCTL_INFO_FNC(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
2590 IOCTL_INFO_FNC(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
2591 IOCTL_INFO_FNC(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
eaec420f
HV		 2592 IOCTL_INFO_FNC(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)),
2593 IOCTL_INFO_FNC(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)),
d806f2df
HV		 2594 IOCTL_INFO_STD(VIDIOC_G_JPEGCOMP, vidioc_g_jpegcomp, v4l_print_jpegcompression, 0),
2595 IOCTL_INFO_STD(VIDIOC_S_JPEGCOMP, vidioc_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
4b1e2e4d 2596 IOCTL_INFO_FNC(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
be6c64e4 2597 IOCTL_INFO_FNC(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
59076122
HV		 2598 IOCTL_INFO_STD(VIDIOC_ENUMAUDIO, vidioc_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
2599 IOCTL_INFO_STD(VIDIOC_ENUMAUDOUT, vidioc_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
d0547cba
HV		 2600 IOCTL_INFO_FNC(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
2601 IOCTL_INFO_FNC(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
458aa4a6 2602 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 2603 IOCTL_INFO_FNC(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
efbceecd
HV		 2604 IOCTL_INFO_FNC(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2605 IOCTL_INFO_FNC(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL),
9bc31633 2606 IOCTL_INFO_FNC(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
458aa4a6
HV		 2607 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMESIZES, vidioc_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
2608 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMEINTERVALS, vidioc_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
d806f2df
HV		 2609 IOCTL_INFO_STD(VIDIOC_G_ENC_INDEX, vidioc_g_enc_index, v4l_print_enc_idx, 0),
2610 IOCTL_INFO_STD(VIDIOC_ENCODER_CMD, vidioc_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2611 IOCTL_INFO_STD(VIDIOC_TRY_ENCODER_CMD, vidioc_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2612 IOCTL_INFO_STD(VIDIOC_DECODER_CMD, vidioc_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
2613 IOCTL_INFO_STD(VIDIOC_TRY_DECODER_CMD, vidioc_try_decoder_cmd, v4l_print_decoder_cmd, 0),
f16f77b0
HV		 2614 IOCTL_INFO_FNC(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
2615 IOCTL_INFO_FNC(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
4b1e2e4d 2616 IOCTL_INFO_FNC(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
f932af80 2617 IOCTL_INFO_STD(VIDIOC_S_DV_TIMINGS, vidioc_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_dv_timings, bt.flags)),
efc626b0 2618 IOCTL_INFO_STD(VIDIOC_G_DV_TIMINGS, vidioc_g_dv_timings, v4l_print_dv_timings, 0),
458aa4a6
HV		 2619 IOCTL_INFO_FNC(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
2620 IOCTL_INFO_FNC(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
2621 IOCTL_INFO_FNC(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
5a5adf6b
HV		 2622 IOCTL_INFO_FNC(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2623 IOCTL_INFO_FNC(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
f932af80 2624 IOCTL_INFO_STD(VIDIOC_ENUM_DV_TIMINGS, vidioc_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)),
043f77ed 2625 IOCTL_INFO_STD(VIDIOC_QUERY_DV_TIMINGS, vidioc_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY),
a1acb8f9 2626 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 2627 IOCTL_INFO_FNC(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
96b03d2a 2628 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 2629 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		 2630};
2631#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
2632
2633bool v4l2_is_known_ioctl(unsigned int cmd)
2634{
2635 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2636 return false;
2637 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
2638}
2639
5a5adf6b
HV		 2640struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd)
2641{
2642 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2643 return vdev->lock;
2644 if (test_bit(_IOC_NR(cmd), vdev->disable_locking))
2645 return NULL;
2646 if (vdev->queue && vdev->queue->lock &&
2647 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
2648 return vdev->queue->lock;
2649 return vdev->lock;
2650}
2651
4839e6c2
HV		 2652/* Common ioctl debug function. This function can be used by
2653 external ioctl messages as well as internal V4L ioctl */
4a085168 2654void v4l_printk_ioctl(const char *prefix, unsigned int cmd)
4839e6c2 2655{
86748f35 2656 const char *dir, *type;
4839e6c2 2657
4a085168
HV		 2658 if (prefix)
2659 printk(KERN_DEBUG "%s: ", prefix);
2660
4839e6c2
HV		 2661 switch (_IOC_TYPE(cmd)) {
2662 case 'd':
2663 type = "v4l2_int";
2664 break;
2665 case 'V':
2666 if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
2667 type = "v4l2";
2668 break;
2669 }
86748f35 2670 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
4839e6c2
HV		 2671 return;
2672 default:
2673 type = "unknown";
86748f35 2674 break;
4839e6c2
HV		 2675 }
2676
2677 switch (_IOC_DIR(cmd)) {
2678 case _IOC_NONE: dir = "--"; break;
2679 case _IOC_READ: dir = "r-"; break;
2680 case _IOC_WRITE: dir = "-w"; break;
2681 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
2682 default: dir = "*ERR*"; break;
2683 }
86748f35 2684 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
4839e6c2
HV		 2685 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
2686}
2687EXPORT_SYMBOL(v4l_printk_ioctl);
2688
069b7479 2689static long __video_do_ioctl(struct file *file,
35ea11ff
HV		 2690 unsigned int cmd, void *arg)
2691{
2692 struct video_device *vfd = video_devdata(file);
a399810c 2693 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
86748f35
HV		 2694 bool write_only = false;
2695 struct v4l2_ioctl_info default_info;
2696 const struct v4l2_ioctl_info *info;
d5fbf32f 2697 void *fh = file->private_data;
99cd47bc 2698 struct v4l2_fh *vfh = NULL;
17028cdb 2699 int dev_debug = vfd->dev_debug;
9190d191 2700 long ret = -ENOTTY;
35ea11ff 2701
6a717883 2702 if (ops == NULL) {
4a085168
HV		 2703 pr_warn("%s: has no ioctl_ops.\n",
2704 video_device_node_name(vfd));
9190d191 2705 return ret;
6a717883
HV		 2706 }
2707
b7284bb0 2708 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
99cd47bc
HV		 2709 vfh = file->private_data;
2710
48ea0be0 2711 if (v4l2_is_known_ioctl(cmd)) {
86748f35 2712 info = &v4l2_ioctls[_IOC_NR(cmd)];
48ea0be0 2713
2e5e435f 2714 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) &&
48ea0be0 2715 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
86748f35 2716 goto done;
4b902fec 2717
b7284bb0 2718 if (vfh && (info->flags & INFO_FL_PRIO)) {
4b902fec
HV		 2719 ret = v4l2_prio_check(vfd->prio, vfh->prio);
2720 if (ret)
86748f35 2721 goto done;
4b902fec 2722 }
86748f35
HV		 2723 } else {
2724 default_info.ioctl = cmd;
2725 default_info.flags = 0;
f18d8e07 2726 default_info.debug = v4l_print_default;
86748f35 2727 info = &default_info;
48ea0be0
HV		 2728 }
2729
86748f35 2730 write_only = _IOC_DIR(cmd) == _IOC_WRITE;
86748f35
HV		 2731 if (info->flags & INFO_FL_STD) {
2732 typedef int (*vidioc_op)(struct file *file, void *fh, void *p);
2733 const void *p = vfd->ioctl_ops;
26ddcbcc 2734 const vidioc_op *vidioc = p + info->u.offset;
86748f35
HV		 2735
2736 ret = (*vidioc)(file, fh, arg);
86748f35 2737 } else if (info->flags & INFO_FL_FUNC) {
26ddcbcc 2738 ret = info->u.func(ops, file, fh, arg);
f18d8e07
HV		 2739 } else if (!ops->vidioc_default) {
2740 ret = -ENOTTY;
2741 } else {
2742 ret = ops->vidioc_default(file, fh,
b7284bb0 2743 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
f18d8e07 2744 cmd, arg);
48ea0be0 2745 }
99cd47bc 2746
86748f35 2747done:
17028cdb
HV		 2748 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) {
2749 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) &&
2750 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF))
2751 return ret;
2752
4a085168 2753 v4l_printk_ioctl(video_device_node_name(vfd), cmd);
86748f35 2754 if (ret < 0)
505d04bd 2755 pr_cont(": error %ld", ret);
17028cdb 2756 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG))
86748f35 2757 pr_cont("\n");
86748f35
HV		 2758 else if (_IOC_DIR(cmd) == _IOC_NONE)
2759 info->debug(arg, write_only);
2760 else {
2761 pr_cont(": ");
2762 info->debug(arg, write_only);
35ea11ff
HV		 2763 }
2764 }
2765
2766 return ret;
2767}
2768
d14e6d76 2769static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
ba2d35c1 2770 void __user **user_ptr, void ***kernel_ptr)
d14e6d76
PO		 2771{
2772 int ret = 0;
2773
2774 switch (cmd) {
96b1a702 2775 case VIDIOC_PREPARE_BUF:
d14e6d76
PO		 2776 case VIDIOC_QUERYBUF:
2777 case VIDIOC_QBUF:
2778 case VIDIOC_DQBUF: {
2779 struct v4l2_buffer *buf = parg;
2780
2781 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
2782 if (buf->length > VIDEO_MAX_PLANES) {
2783 ret = -EINVAL;
2784 break;
2785 }
2786 *user_ptr = (void __user *)buf->m.planes;
ba2d35c1 2787 *kernel_ptr = (void **)&buf->m.planes;
d14e6d76
PO		 2788 *array_size = sizeof(struct v4l2_plane) * buf->length;
2789 ret = 1;
2790 }
2791 break;
2792 }
2793
dd519bb3
HV		 2794 case VIDIOC_G_EDID:
2795 case VIDIOC_S_EDID: {
2796 struct v4l2_edid *edid = parg;
ed45ce2c
HV		 2797
2798 if (edid->blocks) {
1b8b10cc
HV		 2799 if (edid->blocks > 256) {
2800 ret = -EINVAL;
2801 break;
2802 }
ed45ce2c 2803 *user_ptr = (void __user *)edid->edid;
ba2d35c1 2804 *kernel_ptr = (void **)&edid->edid;
ed45ce2c
HV		 2805 *array_size = edid->blocks * 128;
2806 ret = 1;
2807 }
2808 break;
2809 }
2810
d14e6d76
PO		 2811 case VIDIOC_S_EXT_CTRLS:
2812 case VIDIOC_G_EXT_CTRLS:
2813 case VIDIOC_TRY_EXT_CTRLS: {
2814 struct v4l2_ext_controls *ctrls = parg;
2815
2816 if (ctrls->count != 0) {
6c06108b
DC		 2817 if (ctrls->count > V4L2_CID_MAX_CTRLS) {
2818 ret = -EINVAL;
2819 break;
2820 }
d14e6d76 2821 *user_ptr = (void __user *)ctrls->controls;
ba2d35c1 2822 *kernel_ptr = (void **)&ctrls->controls;
d14e6d76
PO		 2823 *array_size = sizeof(struct v4l2_ext_control)
2824 * ctrls->count;
2825 ret = 1;
2826 }
2827 break;
2828 }
2829 }
2830
2831 return ret;
2832}
2833
fc0a8079
LP		 2834long
2835video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
2836 v4l2_kioctl func)
35ea11ff
HV		 2837{
2838 char sbuf[128];
2839 void *mbuf = NULL;
1d94aa36 2840 void *parg = (void *)arg;
069b7479 2841 long err = -EINVAL;
d14e6d76 2842 bool has_array_args;
043f77ed 2843 bool always_copy = false;
d14e6d76 2844 size_t array_size = 0;
35ea11ff 2845 void __user *user_ptr = NULL;
d14e6d76 2846 void **kernel_ptr = NULL;
35ea11ff 2847
35ea11ff 2848 /* Copy arguments into temp kernel buffer */
337f9d20 2849 if (_IOC_DIR(cmd) != _IOC_NONE) {
35ea11ff
HV		 2850 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
2851 parg = sbuf;
2852 } else {
2853 /* too big to allocate from stack */
758d90e1 2854 mbuf = kvmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
35ea11ff
HV		 2855 if (NULL == mbuf)
2856 return -ENOMEM;
2857 parg = mbuf;
2858 }
2859
2860 err = -EFAULT;
19c96e4b 2861 if (_IOC_DIR(cmd) & _IOC_WRITE) {
27cd2aba
HV		 2862 unsigned int n = _IOC_SIZE(cmd);
2863
2864 /*
2865 * In some cases, only a few fields are used as input,
2866 * i.e. when the app sets "index" and then the driver
2867 * fills in the rest of the structure for the thing
2868 * with that index. We only need to copy up the first
2869 * non-input field.
2870 */
2871 if (v4l2_is_known_ioctl(cmd)) {
2872 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags;
043f77ed 2873
27cd2aba
HV		 2874 if (flags & INFO_FL_CLEAR_MASK)
2875 n = (flags & INFO_FL_CLEAR_MASK) >> 16;
043f77ed 2876 always_copy = flags & INFO_FL_ALWAYS_COPY;
27cd2aba 2877 }
19c96e4b
TP		 2878
2879 if (copy_from_user(parg, (void __user *)arg, n))
35ea11ff 2880 goto out;
19c96e4b
TP		 2881
2882 /* zero out anything we don't copy from userspace */
2883 if (n < _IOC_SIZE(cmd))
2884 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n);
337f9d20
TP		 2885 } else {
2886 /* read-only ioctl */
2887 memset(parg, 0, _IOC_SIZE(cmd));
19c96e4b 2888 }
35ea11ff
HV		 2889 }
2890
d14e6d76
PO		 2891 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
2892 if (err < 0)
2893 goto out;
2894 has_array_args = err;
35ea11ff 2895
d14e6d76
PO		 2896 if (has_array_args) {
2897 /*
2898 * When adding new types of array args, make sure that the
2899 * parent argument to ioctl (which contains the pointer to the
2900 * array) fits into sbuf (so that mbuf will still remain
2901 * unused up to here).
2902 */
758d90e1 2903 mbuf = kvmalloc(array_size, GFP_KERNEL);
d14e6d76
PO		 2904 err = -ENOMEM;
2905 if (NULL == mbuf)
2906 goto out_array_args;
2907 err = -EFAULT;
2908 if (copy_from_user(mbuf, user_ptr, array_size))
2909 goto out_array_args;
2910 *kernel_ptr = mbuf;
35ea11ff
HV		 2911 }
2912
2913 /* Handles IOCTL */
fc0a8079 2914 err = func(file, cmd, parg);
5a4c78df 2915 if (err == -ENOTTY || err == -ENOIOCTLCMD) {
02bbb814 2916 err = -ENOTTY;
5a4c78df
HV		 2917 goto out;
2918 }
2919
aa32f4c0
HV		 2920 if (err == 0) {
2921 if (cmd == VIDIOC_DQBUF)
2922 trace_v4l2_dqbuf(video_devdata(file)->minor, parg);
2923 else if (cmd == VIDIOC_QBUF)
2924 trace_v4l2_qbuf(video_devdata(file)->minor, parg);
2925 }
35ea11ff 2926
d14e6d76 2927 if (has_array_args) {
ba2d35c1 2928 *kernel_ptr = (void __force *)user_ptr;
d14e6d76 2929 if (copy_to_user(user_ptr, mbuf, array_size))
35ea11ff 2930 err = -EFAULT;
d14e6d76 2931 goto out_array_args;
35ea11ff 2932 }
043f77ed
HV		 2933 /*
2934 * Some ioctls can return an error, but still have valid
2935 * results that must be returned.
2936 */
2937 if (err < 0 && !always_copy)
35ea11ff
HV		 2938 goto out;
2939
d14e6d76 2940out_array_args:
35ea11ff
HV		 2941 /* Copy results into user buffer */
2942 switch (_IOC_DIR(cmd)) {
2943 case _IOC_READ:
2944 case (_IOC_WRITE | _IOC_READ):
2945 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
2946 err = -EFAULT;
2947 break;
2948 }
2949
2950out:
758d90e1 2951 kvfree(mbuf);
35ea11ff
HV		 2952 return err;
2953}
fc0a8079
LP		 2954EXPORT_SYMBOL(video_usercopy);
2955
2956long video_ioctl2(struct file *file,
2957 unsigned int cmd, unsigned long arg)
2958{
2959 return video_usercopy(file, cmd, arg, __video_do_ioctl);
2960}
8a522c91 2961EXPORT_SYMBOL(video_ioctl2);
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