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Merge remote-tracking branch 'asoc/fix/dapm' into asoc-linus
[linux-2.6-block.git] / drivers / media / v4l2-core / v4l2-ioctl.c
CommitLineData
35ea11ff
HV		 1/*
2 * Video capture interface for Linux version 2
3 *
4 * A generic framework to process V4L2 ioctl commands.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
d9b01449 11 * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1)
35ea11ff
HV		 12 * Mauro Carvalho Chehab <mchehab@infradead.org> (version 2)
13 */
14
15#include <linux/module.h>
5a0e3ad6 16#include <linux/slab.h>
35ea11ff
HV		 17#include <linux/types.h>
18#include <linux/kernel.h>
ae6db515 19#include <linux/version.h>
35ea11ff 20
35ea11ff
HV		 21#include <linux/videodev2.h>
22
35ea11ff
HV		 23#include <media/v4l2-common.h>
24#include <media/v4l2-ioctl.h>
11bbc1ca 25#include <media/v4l2-ctrls.h>
d3d7c963
SA		 26#include <media/v4l2-fh.h>
27#include <media/v4l2-event.h>
99cd47bc 28#include <media/v4l2-device.h>
5a5adf6b 29#include <media/videobuf2-core.h>
35ea11ff 30
aa32f4c0
HV		 31#define CREATE_TRACE_POINTS
32#include <trace/events/v4l2.h>
33
25985edc 34/* Zero out the end of the struct pointed to by p. Everything after, but
7ecc0cf9
TP		 35 * not including, the specified field is cleared. */
36#define CLEAR_AFTER_FIELD(p, field) \
37 memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \
38 0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field))
39
73f35418
HV		 40#define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls)
41
35ea11ff
HV		 42struct std_descr {
43 v4l2_std_id std;
44 const char *descr;
45};
46
47static const struct std_descr standards[] = {
48 { V4L2_STD_NTSC, "NTSC" },
49 { V4L2_STD_NTSC_M, "NTSC-M" },
50 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" },
51 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" },
52 { V4L2_STD_NTSC_443, "NTSC-443" },
53 { V4L2_STD_PAL, "PAL" },
54 { V4L2_STD_PAL_BG, "PAL-BG" },
55 { V4L2_STD_PAL_B, "PAL-B" },
56 { V4L2_STD_PAL_B1, "PAL-B1" },
57 { V4L2_STD_PAL_G, "PAL-G" },
58 { V4L2_STD_PAL_H, "PAL-H" },
59 { V4L2_STD_PAL_I, "PAL-I" },
60 { V4L2_STD_PAL_DK, "PAL-DK" },
61 { V4L2_STD_PAL_D, "PAL-D" },
62 { V4L2_STD_PAL_D1, "PAL-D1" },
63 { V4L2_STD_PAL_K, "PAL-K" },
64 { V4L2_STD_PAL_M, "PAL-M" },
65 { V4L2_STD_PAL_N, "PAL-N" },
66 { V4L2_STD_PAL_Nc, "PAL-Nc" },
67 { V4L2_STD_PAL_60, "PAL-60" },
68 { V4L2_STD_SECAM, "SECAM" },
69 { V4L2_STD_SECAM_B, "SECAM-B" },
70 { V4L2_STD_SECAM_G, "SECAM-G" },
71 { V4L2_STD_SECAM_H, "SECAM-H" },
72 { V4L2_STD_SECAM_DK, "SECAM-DK" },
73 { V4L2_STD_SECAM_D, "SECAM-D" },
74 { V4L2_STD_SECAM_K, "SECAM-K" },
75 { V4L2_STD_SECAM_K1, "SECAM-K1" },
76 { V4L2_STD_SECAM_L, "SECAM-L" },
77 { V4L2_STD_SECAM_LC, "SECAM-Lc" },
78 { 0, "Unknown" }
79};
80
81/* video4linux standard ID conversion to standard name
82 */
83const char *v4l2_norm_to_name(v4l2_std_id id)
84{
85 u32 myid = id;
86 int i;
87
88 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
89 64 bit comparations. So, on that architecture, with some gcc
90 variants, compilation fails. Currently, the max value is 30bit wide.
91 */
92 BUG_ON(myid != id);
93
94 for (i = 0; standards[i].std; i++)
95 if (myid == standards[i].std)
96 break;
97 return standards[i].descr;
98}
99EXPORT_SYMBOL(v4l2_norm_to_name);
100
51f0b8d5
TP		 101/* Returns frame period for the given standard */
102void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod)
103{
104 if (id & V4L2_STD_525_60) {
105 frameperiod->numerator = 1001;
106 frameperiod->denominator = 30000;
107 } else {
108 frameperiod->numerator = 1;
109 frameperiod->denominator = 25;
110 }
111}
112EXPORT_SYMBOL(v4l2_video_std_frame_period);
113
35ea11ff
HV		 114/* Fill in the fields of a v4l2_standard structure according to the
115 'id' and 'transmission' parameters. Returns negative on error. */
116int v4l2_video_std_construct(struct v4l2_standard *vs,
117 int id, const char *name)
118{
51f0b8d5
TP		 119 vs->id = id;
120 v4l2_video_std_frame_period(id, &vs->frameperiod);
121 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625;
35ea11ff
HV		 122 strlcpy(vs->name, name, sizeof(vs->name));
123 return 0;
124}
125EXPORT_SYMBOL(v4l2_video_std_construct);
126
127/* ----------------------------------------------------------------- */
128/* some arrays for pretty-printing debug messages of enum types */
129
130const char *v4l2_field_names[] = {
131 [V4L2_FIELD_ANY] = "any",
132 [V4L2_FIELD_NONE] = "none",
133 [V4L2_FIELD_TOP] = "top",
134 [V4L2_FIELD_BOTTOM] = "bottom",
135 [V4L2_FIELD_INTERLACED] = "interlaced",
136 [V4L2_FIELD_SEQ_TB] = "seq-tb",
137 [V4L2_FIELD_SEQ_BT] = "seq-bt",
138 [V4L2_FIELD_ALTERNATE] = "alternate",
139 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",
140 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",
141};
142EXPORT_SYMBOL(v4l2_field_names);
143
144const char *v4l2_type_names[] = {
839aa56d 145 [0] = "0",
35ea11ff
HV		 146 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap",
147 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay",
148 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out",
149 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap",
150 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out",
151 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",
152 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out",
153 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay",
f8f3914c
PO		 154 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane",
155 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane",
6f3073b8 156 [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap",
35ea11ff
HV		 157};
158EXPORT_SYMBOL(v4l2_type_names);
159
160static const char *v4l2_memory_names[] = {
161 [V4L2_MEMORY_MMAP] = "mmap",
162 [V4L2_MEMORY_USERPTR] = "userptr",
163 [V4L2_MEMORY_OVERLAY] = "overlay",
051c7788 164 [V4L2_MEMORY_DMABUF] = "dmabuf",
35ea11ff
HV		 165};
166
d9246240 167#define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown")
35ea11ff
HV		 168
169/* ------------------------------------------------------------------ */
170/* debug help functions */
8ab75e3e 171
59076122
HV		 172static void v4l_print_querycap(const void *arg, bool write_only)
173{
174 const struct v4l2_capability *p = arg;
175
27d5a87c 176 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, "
59076122 177 "capabilities=0x%08x, device_caps=0x%08x\n",
27d5a87c
HV		 178 (int)sizeof(p->driver), p->driver,
179 (int)sizeof(p->card), p->card,
180 (int)sizeof(p->bus_info), p->bus_info,
59076122
HV		 181 p->version, p->capabilities, p->device_caps);
182}
183
184static void v4l_print_enuminput(const void *arg, bool write_only)
185{
186 const struct v4l2_input *p = arg;
187
27d5a87c 188 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, "
59076122 189 "std=0x%08Lx, status=0x%x, capabilities=0x%x\n",
27d5a87c
HV		 190 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
191 p->tuner, (unsigned long long)p->std, p->status,
192 p->capabilities);
59076122
HV		 193}
194
195static void v4l_print_enumoutput(const void *arg, bool write_only)
196{
197 const struct v4l2_output *p = arg;
198
27d5a87c 199 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, "
59076122 200 "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;
be6c64e4
HV		 251 unsigned i;
252
253 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
254 switch (p->type) {
255 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
256 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
257 pix = &p->fmt.pix;
258 pr_cont(", width=%u, height=%u, "
259 "pixelformat=%c%c%c%c, field=%s, "
c96fd46a 260 "bytesperline=%u, sizeimage=%u, colorspace=%d, "
74fdcb2e
HV		 261 "flags=0x%x, ycbcr_enc=%u, quantization=%u, "
262 "xfer_func=%u\n",
be6c64e4
HV		 263 pix->width, pix->height,
264 (pix->pixelformat & 0xff),
265 (pix->pixelformat >> 8) & 0xff,
266 (pix->pixelformat >> 16) & 0xff,
267 (pix->pixelformat >> 24) & 0xff,
268 prt_names(pix->field, v4l2_field_names),
269 pix->bytesperline, pix->sizeimage,
736d96b5 270 pix->colorspace, pix->flags, pix->ycbcr_enc,
74fdcb2e 271 pix->quantization, pix->xfer_func);
be6c64e4
HV		 272 break;
273 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
274 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
275 mp = &p->fmt.pix_mp;
276 pr_cont(", width=%u, height=%u, "
277 "format=%c%c%c%c, field=%s, "
1e8faa59 278 "colorspace=%d, num_planes=%u, flags=0x%x, "
74fdcb2e 279 "ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",
be6c64e4
HV		 280 mp->width, mp->height,
281 (mp->pixelformat & 0xff),
282 (mp->pixelformat >> 8) & 0xff,
283 (mp->pixelformat >> 16) & 0xff,
284 (mp->pixelformat >> 24) & 0xff,
285 prt_names(mp->field, v4l2_field_names),
736d96b5 286 mp->colorspace, mp->num_planes, mp->flags,
74fdcb2e 287 mp->ycbcr_enc, mp->quantization, mp->xfer_func);
be6c64e4
HV		 288 for (i = 0; i < mp->num_planes; i++)
289 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i,
290 mp->plane_fmt[i].bytesperline,
291 mp->plane_fmt[i].sizeimage);
292 break;
293 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
294 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
295 win = &p->fmt.win;
560dde24
HV		 296 /* Note: we can't print the clip list here since the clips
297 * pointer is a userspace pointer, not a kernelspace
298 * pointer. */
299 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",
300 win->w.width, win->w.height, win->w.left, win->w.top,
be6c64e4 301 prt_names(win->field, v4l2_field_names),
560dde24
HV		 302 win->chromakey, win->clipcount, win->clips,
303 win->bitmap, win->global_alpha);
be6c64e4
HV		 304 break;
305 case V4L2_BUF_TYPE_VBI_CAPTURE:
306 case V4L2_BUF_TYPE_VBI_OUTPUT:
307 vbi = &p->fmt.vbi;
308 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, "
309 "sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n",
310 vbi->sampling_rate, vbi->offset,
311 vbi->samples_per_line,
312 (vbi->sample_format & 0xff),
313 (vbi->sample_format >> 8) & 0xff,
314 (vbi->sample_format >> 16) & 0xff,
315 (vbi->sample_format >> 24) & 0xff,
316 vbi->start[0], vbi->start[1],
317 vbi->count[0], vbi->count[1]);
318 break;
319 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
320 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
321 sliced = &p->fmt.sliced;
322 pr_cont(", service_set=0x%08x, io_size=%d\n",
323 sliced->service_set, sliced->io_size);
324 for (i = 0; i < 24; i++)
325 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
326 sliced->service_lines[0][i],
327 sliced->service_lines[1][i]);
328 break;
582c52cb
AP		 329 case V4L2_BUF_TYPE_SDR_CAPTURE:
330 sdr = &p->fmt.sdr;
331 pr_cont(", pixelformat=%c%c%c%c\n",
332 (sdr->pixelformat >> 0) & 0xff,
333 (sdr->pixelformat >> 8) & 0xff,
334 (sdr->pixelformat >> 16) & 0xff,
335 (sdr->pixelformat >> 24) & 0xff);
336 break;
be6c64e4
HV		 337 }
338}
339
340static void v4l_print_framebuffer(const void *arg, bool write_only)
341{
342 const struct v4l2_framebuffer *p = arg;
343
344 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, "
345 "height=%u, pixelformat=%c%c%c%c, "
560dde24 346 "bytesperline=%u, sizeimage=%u, colorspace=%d\n",
be6c64e4
HV		 347 p->capability, p->flags, p->base,
348 p->fmt.width, p->fmt.height,
349 (p->fmt.pixelformat & 0xff),
350 (p->fmt.pixelformat >> 8) & 0xff,
351 (p->fmt.pixelformat >> 16) & 0xff,
352 (p->fmt.pixelformat >> 24) & 0xff,
353 p->fmt.bytesperline, p->fmt.sizeimage,
354 p->fmt.colorspace);
355}
356
e325b244
HV		 357static void v4l_print_buftype(const void *arg, bool write_only)
358{
359 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names));
360}
361
4b1e2e4d
HV		 362static void v4l_print_modulator(const void *arg, bool write_only)
363{
364 const struct v4l2_modulator *p = arg;
365
366 if (write_only)
560dde24 367 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans);
4b1e2e4d 368 else
27d5a87c 369 pr_cont("index=%u, name=%.*s, capability=0x%x, "
4b1e2e4d 370 "rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
27d5a87c 371 p->index, (int)sizeof(p->name), p->name, p->capability,
4b1e2e4d
HV		 372 p->rangelow, p->rangehigh, p->txsubchans);
373}
374
375static void v4l_print_tuner(const void *arg, bool write_only)
376{
377 const struct v4l2_tuner *p = arg;
378
379 if (write_only)
380 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode);
381 else
27d5a87c 382 pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, "
4b1e2e4d
HV		 383 "rangelow=%u, rangehigh=%u, signal=%u, afc=%d, "
384 "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
27d5a87c 403 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, "
4b1e2e4d 404 "framelines=%u\n", 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
5e788317
HV		 420 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, "
421 "rangelow=%u, rangehigh=%u\n",
422 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing,
423 p->rangelow, p->rangehigh);
4b1e2e4d
HV		 424}
425
eb3728ed 426static void v4l_print_requestbuffers(const void *arg, bool write_only)
59076122 427{
eb3728ed
HV		 428 const struct v4l2_requestbuffers *p = arg;
429
430 pr_cont("count=%d, type=%s, memory=%s\n",
431 p->count,
432 prt_names(p->type, v4l2_type_names),
433 prt_names(p->memory, v4l2_memory_names));
59076122
HV		 434}
435
eb3728ed 436static void v4l_print_buffer(const void *arg, bool write_only)
35ea11ff 437{
eb3728ed
HV		 438 const struct v4l2_buffer *p = arg;
439 const struct v4l2_timecode *tc = &p->timecode;
440 const struct v4l2_plane *plane;
d14e6d76 441 int i;
35ea11ff 442
eb3728ed
HV		 443 pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, "
444 "flags=0x%08x, field=%s, sequence=%d, memory=%s",
35ea11ff
HV		 445 p->timestamp.tv_sec / 3600,
446 (int)(p->timestamp.tv_sec / 60) % 60,
447 (int)(p->timestamp.tv_sec % 60),
b045979d 448 (long)p->timestamp.tv_usec,
35ea11ff
HV		 449 p->index,
450 prt_names(p->type, v4l2_type_names),
eb3728ed
HV		 451 p->flags, prt_names(p->field, v4l2_field_names),
452 p->sequence, prt_names(p->memory, v4l2_memory_names));
d14e6d76
PO		 453
454 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
eb3728ed 455 pr_cont("\n");
d14e6d76
PO		 456 for (i = 0; i < p->length; ++i) {
457 plane = &p->m.planes[i];
eb3728ed 458 printk(KERN_DEBUG
560dde24 459 "plane %d: bytesused=%d, data_offset=0x%08x, "
eb3728ed 460 "offset/userptr=0x%lx, length=%d\n",
d14e6d76
PO		 461 i, plane->bytesused, plane->data_offset,
462 plane->m.userptr, plane->length);
463 }
464 } else {
560dde24 465 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n",
d14e6d76
PO		 466 p->bytesused, p->m.userptr, p->length);
467 }
468
eb3728ed
HV		 469 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, "
470 "flags=0x%08x, frames=%d, userbits=0x%08x\n",
35ea11ff
HV		 471 tc->hours, tc->minutes, tc->seconds,
472 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
473}
474
b799d09a
TS		 475static void v4l_print_exportbuffer(const void *arg, bool write_only)
476{
477 const struct v4l2_exportbuffer *p = arg;
478
479 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n",
480 p->fd, prt_names(p->type, v4l2_type_names),
481 p->index, p->plane, p->flags);
482}
483
eb3728ed
HV		 484static void v4l_print_create_buffers(const void *arg, bool write_only)
485{
486 const struct v4l2_create_buffers *p = arg;
487
488 pr_cont("index=%d, count=%d, memory=%s, ",
489 p->index, p->count,
490 prt_names(p->memory, v4l2_memory_names));
491 v4l_print_format(&p->format, write_only);
492}
493
494static void v4l_print_streamparm(const void *arg, bool write_only)
495{
496 const struct v4l2_streamparm *p = arg;
497
498 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
499
500 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
501 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
502 const struct v4l2_captureparm *c = &p->parm.capture;
503
504 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, "
505 "extendedmode=%d, readbuffers=%d\n",
506 c->capability, c->capturemode,
507 c->timeperframe.numerator, c->timeperframe.denominator,
508 c->extendedmode, c->readbuffers);
509 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
510 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
511 const struct v4l2_outputparm *c = &p->parm.output;
512
513 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, "
514 "extendedmode=%d, writebuffers=%d\n",
515 c->capability, c->outputmode,
516 c->timeperframe.numerator, c->timeperframe.denominator,
517 c->extendedmode, c->writebuffers);
560dde24
HV		 518 } else {
519 pr_cont("\n");
eb3728ed
HV		 520 }
521}
522
efbceecd
HV		 523static void v4l_print_queryctrl(const void *arg, bool write_only)
524{
525 const struct v4l2_queryctrl *p = arg;
526
27d5a87c 527 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, "
efbceecd 528 "step=%d, default=%d, flags=0x%08x\n",
27d5a87c 529 p->id, p->type, (int)sizeof(p->name), p->name,
efbceecd
HV		 530 p->minimum, p->maximum,
531 p->step, p->default_value, p->flags);
532}
533
e6bee368
HV		 534static void v4l_print_query_ext_ctrl(const void *arg, bool write_only)
535{
536 const struct v4l2_query_ext_ctrl *p = arg;
537
538 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%lld/%lld, "
539 "step=%lld, default=%lld, flags=0x%08x, elem_size=%u, elems=%u, "
0176077a 540 "nr_of_dims=%u, dims=%u,%u,%u,%u\n",
e6bee368
HV		 541 p->id, p->type, (int)sizeof(p->name), p->name,
542 p->minimum, p->maximum,
543 p->step, p->default_value, p->flags,
544 p->elem_size, p->elems, p->nr_of_dims,
0176077a 545 p->dims[0], p->dims[1], p->dims[2], p->dims[3]);
e6bee368
HV		 546}
547
efbceecd
HV		 548static void v4l_print_querymenu(const void *arg, bool write_only)
549{
550 const struct v4l2_querymenu *p = arg;
551
552 pr_cont("id=0x%x, index=%d\n", p->id, p->index);
553}
554
555static void v4l_print_control(const void *arg, bool write_only)
556{
557 const struct v4l2_control *p = arg;
558
559 pr_cont("id=0x%x, value=%d\n", p->id, p->value);
560}
561
562static void v4l_print_ext_controls(const void *arg, bool write_only)
563{
564 const struct v4l2_ext_controls *p = arg;
565 int i;
566
567 pr_cont("class=0x%x, count=%d, error_idx=%d",
568 p->ctrl_class, p->count, p->error_idx);
569 for (i = 0; i < p->count; i++) {
017ab36a 570 if (!p->controls[i].size)
efbceecd
HV		 571 pr_cont(", id/val=0x%x/0x%x",
572 p->controls[i].id, p->controls[i].value);
573 else
574 pr_cont(", id/size=0x%x/%u",
575 p->controls[i].id, p->controls[i].size);
576 }
577 pr_cont("\n");
578}
579
d84f2d94 580static void v4l_print_cropcap(const void *arg, bool write_only)
eb3728ed 581{
d84f2d94
HV		 582 const struct v4l2_cropcap *p = arg;
583
584 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, "
a112fbaf 585 "defrect wxh=%dx%d, x,y=%d,%d, "
d84f2d94
HV		 586 "pixelaspect %d/%d\n",
587 prt_names(p->type, v4l2_type_names),
588 p->bounds.width, p->bounds.height,
589 p->bounds.left, p->bounds.top,
590 p->defrect.width, p->defrect.height,
591 p->defrect.left, p->defrect.top,
592 p->pixelaspect.numerator, p->pixelaspect.denominator);
eb3728ed
HV		 593}
594
d84f2d94 595static void v4l_print_crop(const void *arg, bool write_only)
35ea11ff 596{
d84f2d94
HV		 597 const struct v4l2_crop *p = arg;
598
599 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n",
600 prt_names(p->type, v4l2_type_names),
601 p->c.width, p->c.height,
602 p->c.left, p->c.top);
603}
604
605static void v4l_print_selection(const void *arg, bool write_only)
606{
607 const struct v4l2_selection *p = arg;
608
609 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n",
610 prt_names(p->type, v4l2_type_names),
611 p->target, p->flags,
612 p->r.width, p->r.height, p->r.left, p->r.top);
613}
614
d806f2df
HV		 615static void v4l_print_jpegcompression(const void *arg, bool write_only)
616{
617 const struct v4l2_jpegcompression *p = arg;
618
619 pr_cont("quality=%d, APPn=%d, APP_len=%d, "
620 "COM_len=%d, jpeg_markers=0x%x\n",
621 p->quality, p->APPn, p->APP_len,
622 p->COM_len, p->jpeg_markers);
623}
624
625static void v4l_print_enc_idx(const void *arg, bool write_only)
626{
627 const struct v4l2_enc_idx *p = arg;
628
629 pr_cont("entries=%d, entries_cap=%d\n",
630 p->entries, p->entries_cap);
631}
632
633static void v4l_print_encoder_cmd(const void *arg, bool write_only)
634{
635 const struct v4l2_encoder_cmd *p = arg;
636
637 pr_cont("cmd=%d, flags=0x%x\n",
638 p->cmd, p->flags);
639}
640
641static void v4l_print_decoder_cmd(const void *arg, bool write_only)
642{
643 const struct v4l2_decoder_cmd *p = arg;
644
645 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags);
646
647 if (p->cmd == V4L2_DEC_CMD_START)
648 pr_info("speed=%d, format=%u\n",
649 p->start.speed, p->start.format);
650 else if (p->cmd == V4L2_DEC_CMD_STOP)
651 pr_info("pts=%llu\n", p->stop.pts);
652}
653
96b03d2a 654static void v4l_print_dbg_chip_info(const void *arg, bool write_only)
79b0c640 655{
96b03d2a 656 const struct v4l2_dbg_chip_info *p = arg;
79b0c640
HV		 657
658 pr_cont("type=%u, ", p->match.type);
3eef2510 659 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
79b0c640
HV		 660 pr_cont("name=%.*s, ",
661 (int)sizeof(p->match.name), p->match.name);
662 else
663 pr_cont("addr=%u, ", p->match.addr);
664 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name);
665}
666
f16f77b0
HV		 667static void v4l_print_dbg_register(const void *arg, bool write_only)
668{
669 const struct v4l2_dbg_register *p = arg;
670
671 pr_cont("type=%u, ", p->match.type);
3eef2510 672 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
27d5a87c
HV		 673 pr_cont("name=%.*s, ",
674 (int)sizeof(p->match.name), p->match.name);
f16f77b0
HV		 675 else
676 pr_cont("addr=%u, ", p->match.addr);
677 pr_cont("reg=0x%llx, val=0x%llx\n",
678 p->reg, p->val);
679}
680
efc626b0 681static void v4l_print_dv_timings(const void *arg, bool write_only)
5d7758ee 682{
efc626b0
HV		 683 const struct v4l2_dv_timings *p = arg;
684
5d7758ee
HV		 685 switch (p->type) {
686 case V4L2_DV_BT_656_1120:
efc626b0
HV		 687 pr_cont("type=bt-656/1120, interlaced=%u, "
688 "pixelclock=%llu, "
689 "width=%u, height=%u, polarities=0x%x, "
690 "hfrontporch=%u, hsync=%u, "
691 "hbackporch=%u, vfrontporch=%u, "
692 "vsync=%u, vbackporch=%u, "
693 "il_vfrontporch=%u, il_vsync=%u, "
694 "il_vbackporch=%u, standards=0x%x, flags=0x%x\n",
5d7758ee
HV		 695 p->bt.interlaced, p->bt.pixelclock,
696 p->bt.width, p->bt.height,
697 p->bt.polarities, p->bt.hfrontporch,
698 p->bt.hsync, p->bt.hbackporch,
699 p->bt.vfrontporch, p->bt.vsync,
700 p->bt.vbackporch, p->bt.il_vfrontporch,
701 p->bt.il_vsync, p->bt.il_vbackporch,
702 p->bt.standards, p->bt.flags);
703 break;
704 default:
efc626b0 705 pr_cont("type=%d\n", p->type);
5d7758ee
HV		 706 break;
707 }
708}
709
efc626b0
HV		 710static void v4l_print_enum_dv_timings(const void *arg, bool write_only)
711{
712 const struct v4l2_enum_dv_timings *p = arg;
713
714 pr_cont("index=%u, ", p->index);
715 v4l_print_dv_timings(&p->timings, write_only);
716}
717
718static void v4l_print_dv_timings_cap(const void *arg, bool write_only)
719{
720 const struct v4l2_dv_timings_cap *p = arg;
721
722 switch (p->type) {
723 case V4L2_DV_BT_656_1120:
724 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, "
725 "pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
726 p->bt.min_width, p->bt.max_width,
727 p->bt.min_height, p->bt.max_height,
728 p->bt.min_pixelclock, p->bt.max_pixelclock,
729 p->bt.standards, p->bt.capabilities);
730 break;
731 default:
732 pr_cont("type=%u\n", p->type);
733 break;
734 }
735}
736
458aa4a6
HV		 737static void v4l_print_frmsizeenum(const void *arg, bool write_only)
738{
739 const struct v4l2_frmsizeenum *p = arg;
740
741 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u",
742 p->index,
743 (p->pixel_format & 0xff),
744 (p->pixel_format >> 8) & 0xff,
745 (p->pixel_format >> 16) & 0xff,
746 (p->pixel_format >> 24) & 0xff,
747 p->type);
748 switch (p->type) {
749 case V4L2_FRMSIZE_TYPE_DISCRETE:
560dde24 750 pr_cont(", wxh=%ux%u\n",
458aa4a6
HV		 751 p->discrete.width, p->discrete.height);
752 break;
753 case V4L2_FRMSIZE_TYPE_STEPWISE:
560dde24 754 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n",
458aa4a6
HV		 755 p->stepwise.min_width, p->stepwise.min_height,
756 p->stepwise.step_width, p->stepwise.step_height,
757 p->stepwise.max_width, p->stepwise.max_height);
758 break;
759 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
760 /* fall through */
761 default:
762 pr_cont("\n");
763 break;
764 }
765}
766
767static void v4l_print_frmivalenum(const void *arg, bool write_only)
768{
769 const struct v4l2_frmivalenum *p = arg;
770
771 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u",
772 p->index,
773 (p->pixel_format & 0xff),
774 (p->pixel_format >> 8) & 0xff,
775 (p->pixel_format >> 16) & 0xff,
776 (p->pixel_format >> 24) & 0xff,
777 p->width, p->height, p->type);
778 switch (p->type) {
779 case V4L2_FRMIVAL_TYPE_DISCRETE:
560dde24 780 pr_cont(", fps=%d/%d\n",
458aa4a6
HV		 781 p->discrete.numerator,
782 p->discrete.denominator);
783 break;
784 case V4L2_FRMIVAL_TYPE_STEPWISE:
560dde24 785 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n",
458aa4a6
HV		 786 p->stepwise.min.numerator,
787 p->stepwise.min.denominator,
788 p->stepwise.max.numerator,
789 p->stepwise.max.denominator,
790 p->stepwise.step.numerator,
791 p->stepwise.step.denominator);
792 break;
793 case V4L2_FRMIVAL_TYPE_CONTINUOUS:
794 /* fall through */
795 default:
796 pr_cont("\n");
797 break;
798 }
799}
800
801static void v4l_print_event(const void *arg, bool write_only)
802{
803 const struct v4l2_event *p = arg;
804 const struct v4l2_event_ctrl *c;
805
806 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, "
807 "timestamp=%lu.%9.9lu\n",
808 p->type, p->pending, p->sequence, p->id,
809 p->timestamp.tv_sec, p->timestamp.tv_nsec);
810 switch (p->type) {
811 case V4L2_EVENT_VSYNC:
812 printk(KERN_DEBUG "field=%s\n",
813 prt_names(p->u.vsync.field, v4l2_field_names));
814 break;
815 case V4L2_EVENT_CTRL:
816 c = &p->u.ctrl;
817 printk(KERN_DEBUG "changes=0x%x, type=%u, ",
818 c->changes, c->type);
819 if (c->type == V4L2_CTRL_TYPE_INTEGER64)
820 pr_cont("value64=%lld, ", c->value64);
821 else
822 pr_cont("value=%d, ", c->value);
560dde24
HV		 823 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, "
824 "default_value=%d\n",
458aa4a6
HV		 825 c->flags, c->minimum, c->maximum,
826 c->step, c->default_value);
827 break;
828 case V4L2_EVENT_FRAME_SYNC:
829 pr_cont("frame_sequence=%u\n",
830 p->u.frame_sync.frame_sequence);
831 break;
832 }
833}
834
835static void v4l_print_event_subscription(const void *arg, bool write_only)
836{
837 const struct v4l2_event_subscription *p = arg;
838
839 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
840 p->type, p->id, p->flags);
841}
842
843static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only)
844{
845 const struct v4l2_sliced_vbi_cap *p = arg;
846 int i;
847
848 pr_cont("type=%s, service_set=0x%08x\n",
849 prt_names(p->type, v4l2_type_names), p->service_set);
850 for (i = 0; i < 24; i++)
851 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
852 p->service_lines[0][i],
853 p->service_lines[1][i]);
854}
855
82b655bf
HV		 856static void v4l_print_freq_band(const void *arg, bool write_only)
857{
858 const struct v4l2_frequency_band *p = arg;
859
860 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, "
560dde24 861 "rangelow=%u, rangehigh=%u, modulation=0x%x\n",
82b655bf
HV		 862 p->tuner, p->type, p->index,
863 p->capability, p->rangelow,
864 p->rangehigh, p->modulation);
865}
866
dd519bb3
HV		 867static void v4l_print_edid(const void *arg, bool write_only)
868{
869 const struct v4l2_edid *p = arg;
870
871 pr_cont("pad=%u, start_block=%u, blocks=%u\n",
872 p->pad, p->start_block, p->blocks);
873}
874
efc626b0
HV		 875static void v4l_print_u32(const void *arg, bool write_only)
876{
877 pr_cont("value=%u\n", *(const u32 *)arg);
878}
879
880static void v4l_print_newline(const void *arg, bool write_only)
881{
882 pr_cont("\n");
883}
884
f18d8e07
HV		 885static void v4l_print_default(const void *arg, bool write_only)
886{
887 pr_cont("driver-specific ioctl\n");
888}
889
efbceecd 890static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
35ea11ff
HV		 891{
892 __u32 i;
893
894 /* zero the reserved fields */
895 c->reserved[0] = c->reserved[1] = 0;
6b5a9492 896 for (i = 0; i < c->count; i++)
35ea11ff 897 c->controls[i].reserved2[0] = 0;
6b5a9492 898
35ea11ff
HV		 899 /* V4L2_CID_PRIVATE_BASE cannot be used as control class
900 when using extended controls.
901 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
902 is it allowed for backwards compatibility.
903 */
904 if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE)
905 return 0;
9b239b22
HV		 906 if (c->ctrl_class == 0)
907 return 1;
35ea11ff
HV		 908 /* Check that all controls are from the same control class. */
909 for (i = 0; i < c->count; i++) {
910 if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) {
911 c->error_idx = i;
912 return 0;
913 }
914 }
915 return 1;
916}
917
4b20259f 918static int check_fmt(struct file *file, enum v4l2_buf_type type)
35ea11ff 919{
4b20259f
HV		 920 struct video_device *vfd = video_devdata(file);
921 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
922 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
923 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI;
582c52cb 924 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
4b20259f
HV		 925 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
926 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
927
a399810c
HV		 928 if (ops == NULL)
929 return -EINVAL;
930
35ea11ff
HV		 931 switch (type) {
932 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f
HV		 933 if (is_vid && is_rx &&
934 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane))
d14e6d76
PO		 935 return 0;
936 break;
937 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 938 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_cap_mplane)
35ea11ff
HV		 939 return 0;
940 break;
941 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 942 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay)
35ea11ff
HV		 943 return 0;
944 break;
945 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f
HV		 946 if (is_vid && is_tx &&
947 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane))
d14e6d76
PO		 948 return 0;
949 break;
950 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 951 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane)
35ea11ff
HV		 952 return 0;
953 break;
954 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 955 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay)
35ea11ff
HV		 956 return 0;
957 break;
958 case V4L2_BUF_TYPE_VBI_CAPTURE:
4b20259f 959 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap)
35ea11ff
HV		 960 return 0;
961 break;
962 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 963 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out)
35ea11ff
HV		 964 return 0;
965 break;
966 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
4b20259f 967 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap)
35ea11ff
HV		 968 return 0;
969 break;
970 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 971 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out)
35ea11ff
HV		 972 return 0;
973 break;
582c52cb
AP		 974 case V4L2_BUF_TYPE_SDR_CAPTURE:
975 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap)
976 return 0;
977 break;
633c98e5 978 default:
35ea11ff
HV		 979 break;
980 }
981 return -EINVAL;
982}
983
d52e2381
LP		 984static void v4l_sanitize_format(struct v4l2_format *fmt)
985{
986 unsigned int offset;
987
988 /*
989 * The v4l2_pix_format structure has been extended with fields that were
990 * not previously required to be set to zero by applications. The priv
991 * field, when set to a magic value, indicates the the extended fields
992 * are valid. Otherwise they will contain undefined values. To simplify
993 * the API towards drivers zero the extended fields and set the priv
994 * field to the magic value when the extended pixel format structure
995 * isn't used by applications.
996 */
997
998 if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
999 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1000 return;
1001
1002 if (fmt->fmt.pix.priv == V4L2_PIX_FMT_PRIV_MAGIC)
1003 return;
1004
1005 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1006
1007 offset = offsetof(struct v4l2_pix_format, priv)
1008 + sizeof(fmt->fmt.pix.priv);
1009 memset(((void *)&fmt->fmt.pix) + offset, 0,
1010 sizeof(fmt->fmt.pix) - offset);
1011}
1012
59076122
HV		 1013static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
1014 struct file *file, void *fh, void *arg)
1015{
1016 struct v4l2_capability *cap = (struct v4l2_capability *)arg;
d52e2381 1017 int ret;
59076122
HV		 1018
1019 cap->version = LINUX_VERSION_CODE;
d52e2381
LP		 1020
1021 ret = ops->vidioc_querycap(file, fh, cap);
1022
1023 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT;
454a4e72
HV		 1024 /*
1025 * Drivers MUST fill in device_caps, so check for this and
1026 * warn if it was forgotten.
1027 */
1028 WARN_ON(!(cap->capabilities & V4L2_CAP_DEVICE_CAPS) ||
1029 !cap->device_caps);
796a2bd2 1030 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT;
d52e2381
LP		 1031
1032 return ret;
59076122
HV		 1033}
1034
1035static int v4l_s_input(const struct v4l2_ioctl_ops *ops,
1036 struct file *file, void *fh, void *arg)
1037{
1038 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg);
1039}
1040
1041static int v4l_s_output(const struct v4l2_ioctl_ops *ops,
1042 struct file *file, void *fh, void *arg)
1043{
1044 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg);
1045}
1046
d0547cba
HV		 1047static int v4l_g_priority(const struct v4l2_ioctl_ops *ops,
1048 struct file *file, void *fh, void *arg)
1049{
1050 struct video_device *vfd;
1051 u32 *p = arg;
1052
d0547cba 1053 vfd = video_devdata(file);
59b702ea 1054 *p = v4l2_prio_max(vfd->prio);
d0547cba
HV		 1055 return 0;
1056}
1057
1058static int v4l_s_priority(const struct v4l2_ioctl_ops *ops,
1059 struct file *file, void *fh, void *arg)
1060{
1061 struct video_device *vfd;
1062 struct v4l2_fh *vfh;
1063 u32 *p = arg;
1064
d0547cba 1065 vfd = video_devdata(file);
2438e78a
HV		 1066 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
1067 return -ENOTTY;
d0547cba 1068 vfh = file->private_data;
59b702ea 1069 return v4l2_prio_change(vfd->prio, &vfh->prio, *p);
d0547cba
HV		 1070}
1071
59076122
HV		 1072static int v4l_enuminput(const struct v4l2_ioctl_ops *ops,
1073 struct file *file, void *fh, void *arg)
1074{
73f35418 1075 struct video_device *vfd = video_devdata(file);
59076122
HV		 1076 struct v4l2_input *p = arg;
1077
1078 /*
02fa6282 1079 * We set the flags for CAP_DV_TIMINGS &
59076122
HV		 1080 * CAP_STD here based on ioctl handler provided by the
1081 * driver. If the driver doesn't support these
1082 * for a specific input, it must override these flags.
1083 */
73f35418 1084 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
59076122 1085 p->capabilities |= V4L2_IN_CAP_STD;
59076122
HV		 1086
1087 return ops->vidioc_enum_input(file, fh, p);
1088}
1089
1090static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops,
1091 struct file *file, void *fh, void *arg)
1092{
73f35418 1093 struct video_device *vfd = video_devdata(file);
59076122
HV		 1094 struct v4l2_output *p = arg;
1095
1096 /*
02fa6282 1097 * We set the flags for CAP_DV_TIMINGS &
59076122
HV		 1098 * CAP_STD here based on ioctl handler provided by the
1099 * driver. If the driver doesn't support these
1100 * for a specific output, it must override these flags.
1101 */
73f35418 1102 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
59076122 1103 p->capabilities |= V4L2_OUT_CAP_STD;
59076122
HV		 1104
1105 return ops->vidioc_enum_output(file, fh, p);
1106}
1107
ba300204
HV		 1108static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
1109{
1110 const unsigned sz = sizeof(fmt->description);
1111 const char *descr = NULL;
1112 u32 flags = 0;
1113
1114 /*
1115 * We depart from the normal coding style here since the descriptions
1116 * should be aligned so it is easy to see which descriptions will be
1117 * longer than 31 characters (the max length for a description).
1118 * And frankly, this is easier to read anyway.
1119 *
1120 * Note that gcc will use O(log N) comparisons to find the right case.
1121 */
1122 switch (fmt->pixelformat) {
1123 /* Max description length mask: descr = "0123456789012345678901234567890" */
1124 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break;
1125 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break;
1126 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break;
1127 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break;
1128 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break;
1129 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break;
1130 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break;
1131 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break;
1132 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break;
1133 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break;
1134 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break;
1135 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break;
1136 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break;
1137 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break;
1138 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break;
1139 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break;
1140 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break;
1141 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break;
1142 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break;
1143 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break;
1144 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break;
1145 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break;
1146 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break;
1147 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break;
1148 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break;
1149 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break;
1150 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break;
2e5e435f 1151 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break;
ba300204
HV		 1152 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break;
1153 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break;
1154 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break;
1155 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break;
1156 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break;
1157 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break;
1158 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break;
1159 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break;
1160 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break;
1161 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break;
1162 case V4L2_PIX_FMT_YUV422P: descr = "Planar YVU 4:2:2"; break;
1163 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break;
1164 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break;
1165 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break;
1166 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break;
1167 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break;
1168 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break;
1169 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break;
1170 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break;
1171 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break;
1172 case V4L2_PIX_FMT_HM12: descr = "YUV 4:2:0 (16x16 Macroblocks)"; break;
1173 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break;
1174 case V4L2_PIX_FMT_NV12: descr = "Y/CbCr 4:2:0"; break;
1175 case V4L2_PIX_FMT_NV21: descr = "Y/CrCb 4:2:0"; break;
1176 case V4L2_PIX_FMT_NV16: descr = "Y/CbCr 4:2:2"; break;
1177 case V4L2_PIX_FMT_NV61: descr = "Y/CrCb 4:2:2"; break;
1178 case V4L2_PIX_FMT_NV24: descr = "Y/CbCr 4:4:4"; break;
1179 case V4L2_PIX_FMT_NV42: descr = "Y/CrCb 4:4:4"; break;
1180 case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break;
1181 case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break;
1182 case V4L2_PIX_FMT_NV16M: descr = "Y/CbCr 4:2:2 (N-C)"; break;
1183 case V4L2_PIX_FMT_NV61M: descr = "Y/CrCb 4:2:2 (N-C)"; break;
1184 case V4L2_PIX_FMT_NV12MT: descr = "Y/CbCr 4:2:0 (64x32 MB, N-C)"; break;
1185 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/CbCr 4:2:0 (16x16 MB, N-C)"; break;
1186 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break;
1187 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break;
1188 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break;
1189 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break;
1190 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break;
1191 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break;
1192 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break;
1193 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break;
1194 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break;
1195 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break;
1196 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break;
1197 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break;
1198 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break;
1199 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break;
1200 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break;
1201 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break;
1202 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break;
1203 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break;
1204 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break;
1205 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break;
1206 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break;
1207 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break;
1208 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break;
1209 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break;
1210 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break;
1211 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break;
1212 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR (Exp.)"; break;
99b74277 1213 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break;
ba300204
HV		 1214 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break;
1215 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break;
1216 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break;
1217 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break;
1218 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break;
1219 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break;
1220 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break;
48fc10aa
AP		 1221 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break;
1222 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break;
ba300204
HV		 1223 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break;
1224 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break;
1225 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break;
1226
1227 default:
1228 /* Compressed formats */
1229 flags = V4L2_FMT_FLAG_COMPRESSED;
1230 switch (fmt->pixelformat) {
1231 /* Max description length mask: descr = "0123456789012345678901234567890" */
1232 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break;
1233 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break;
1234 case V4L2_PIX_FMT_DV: descr = "1394"; break;
1235 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break;
1236 case V4L2_PIX_FMT_H264: descr = "H.264"; break;
1237 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break;
1238 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break;
1239 case V4L2_PIX_FMT_H263: descr = "H.263"; break;
1240 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break;
1241 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break;
1242 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 part 2 ES"; break;
1243 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break;
1244 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break;
1245 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break;
1246 case V4L2_PIX_FMT_VP8: descr = "VP8"; break;
1247 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break;
1248 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break;
1249 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break;
1250 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break;
1251 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break;
1252 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break;
1253 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break;
1254 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break;
1255 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break;
1256 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break;
1257 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break;
1258 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break;
1259 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break;
1260 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break;
1261 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break;
1262 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break;
1263 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break;
1264 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break;
1265 default:
1266 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat);
1267 if (fmt->description[0])
1268 return;
1269 flags = 0;
1270 snprintf(fmt->description, sz, "%c%c%c%c%s",
1271 (char)(fmt->pixelformat & 0x7f),
1272 (char)((fmt->pixelformat >> 8) & 0x7f),
1273 (char)((fmt->pixelformat >> 16) & 0x7f),
1274 (char)((fmt->pixelformat >> 24) & 0x7f),
1275 (fmt->pixelformat & (1 << 31)) ? "-BE" : "");
1276 break;
1277 }
1278 }
1279
1280 if (descr)
1281 WARN_ON(strlcpy(fmt->description, descr, sz) >= sz);
1282 fmt->flags = flags;
1283}
1284
be6c64e4
HV		 1285static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
1286 struct file *file, void *fh, void *arg)
1287{
1288 struct v4l2_fmtdesc *p = arg;
4b20259f 1289 struct video_device *vfd = video_devdata(file);
ce71bbc9
HV		 1290 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1291 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
4b20259f
HV		 1292 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1293 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
ba300204 1294 int ret = -EINVAL;
be6c64e4
HV		 1295
1296 switch (p->type) {
1297 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
ce71bbc9 1298 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_cap))
be6c64e4 1299 break;
ba300204
HV		 1300 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
1301 break;
be6c64e4 1302 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
ce71bbc9 1303 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_cap_mplane))
be6c64e4 1304 break;
ba300204
HV		 1305 ret = ops->vidioc_enum_fmt_vid_cap_mplane(file, fh, arg);
1306 break;
be6c64e4 1307 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
ce71bbc9 1308 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_overlay))
be6c64e4 1309 break;
ba300204
HV		 1310 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
1311 break;
be6c64e4 1312 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
ce71bbc9 1313 if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out))
be6c64e4 1314 break;
ba300204
HV		 1315 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg);
1316 break;
be6c64e4 1317 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
ce71bbc9 1318 if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out_mplane))
be6c64e4 1319 break;
ba300204
HV		 1320 ret = ops->vidioc_enum_fmt_vid_out_mplane(file, fh, arg);
1321 break;
582c52cb 1322 case V4L2_BUF_TYPE_SDR_CAPTURE:
ce71bbc9 1323 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_enum_fmt_sdr_cap))
582c52cb 1324 break;
ba300204
HV		 1325 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg);
1326 break;
be6c64e4 1327 }
ba300204
HV		 1328 if (ret == 0)
1329 v4l_fill_fmtdesc(p);
1330 return ret;
be6c64e4
HV		 1331}
1332
1333static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
1334 struct file *file, void *fh, void *arg)
1335{
1336 struct v4l2_format *p = arg;
4b20259f
HV		 1337 struct video_device *vfd = video_devdata(file);
1338 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
582c52cb 1339 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
4b20259f
HV		 1340 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1341 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
d52e2381
LP		 1342 int ret;
1343
e5ce558a
HV		 1344 /*
1345 * fmt can't be cleared for these overlay types due to the 'clips'
1346 * 'clipcount' and 'bitmap' pointers in struct v4l2_window.
1347 * Those are provided by the user. So handle these two overlay types
1348 * first, and then just do a simple memset for the other types.
1349 */
1350 switch (p->type) {
1351 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1352 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: {
4d1afa51 1353 struct v4l2_clip __user *clips = p->fmt.win.clips;
e5ce558a 1354 u32 clipcount = p->fmt.win.clipcount;
4d1afa51 1355 void __user *bitmap = p->fmt.win.bitmap;
e5ce558a
HV		 1356
1357 memset(&p->fmt, 0, sizeof(p->fmt));
1358 p->fmt.win.clips = clips;
1359 p->fmt.win.clipcount = clipcount;
1360 p->fmt.win.bitmap = bitmap;
1361 break;
1362 }
1363 default:
1364 memset(&p->fmt, 0, sizeof(p->fmt));
1365 break;
1366 }
1367
be6c64e4
HV		 1368 switch (p->type) {
1369 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1370 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap))
be6c64e4 1371 break;
48f2650a 1372 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
d52e2381 1373 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg);
48f2650a 1374 /* just in case the driver zeroed it again */
d52e2381
LP		 1375 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1376 return ret;
be6c64e4 1377 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1378 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap_mplane))
be6c64e4
HV		 1379 break;
1380 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
1381 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1382 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_overlay))
be6c64e4
HV		 1383 break;
1384 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
4b20259f
HV		 1385 case V4L2_BUF_TYPE_VBI_CAPTURE:
1386 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_vbi_cap))
1387 break;
1388 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
1389 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1390 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_cap))
1391 break;
1392 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1393 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1394 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out))
be6c64e4 1395 break;
48f2650a 1396 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
d52e2381 1397 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg);
48f2650a 1398 /* just in case the driver zeroed it again */
d52e2381
LP		 1399 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1400 return ret;
be6c64e4 1401 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1402 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_mplane))
be6c64e4
HV		 1403 break;
1404 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
1405 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 1406 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_overlay))
be6c64e4
HV		 1407 break;
1408 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1409 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 1410 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_vbi_out))
be6c64e4
HV		 1411 break;
1412 return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
be6c64e4 1413 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 1414 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_out))
be6c64e4
HV		 1415 break;
1416 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
582c52cb
AP		 1417 case V4L2_BUF_TYPE_SDR_CAPTURE:
1418 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_g_fmt_sdr_cap))
1419 break;
1420 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg);
be6c64e4
HV		 1421 }
1422 return -EINVAL;
1423}
1424
1425static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
1426 struct file *file, void *fh, void *arg)
1427{
1428 struct v4l2_format *p = arg;
4b20259f
HV		 1429 struct video_device *vfd = video_devdata(file);
1430 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
582c52cb 1431 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
4b20259f
HV		 1432 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1433 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
48f2650a 1434 int ret;
be6c64e4 1435
d52e2381
LP		 1436 v4l_sanitize_format(p);
1437
be6c64e4
HV		 1438 switch (p->type) {
1439 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1440 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap))
be6c64e4
HV		 1441 break;
1442 CLEAR_AFTER_FIELD(p, fmt.pix);
48f2650a
HV		 1443 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg);
1444 /* just in case the driver zeroed it again */
1445 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1446 return ret;
be6c64e4 1447 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1448 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap_mplane))
be6c64e4
HV		 1449 break;
1450 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1451 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
1452 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1453 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_overlay))
be6c64e4
HV		 1454 break;
1455 CLEAR_AFTER_FIELD(p, fmt.win);
1456 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
4b20259f
HV		 1457 case V4L2_BUF_TYPE_VBI_CAPTURE:
1458 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_vbi_cap))
1459 break;
1460 CLEAR_AFTER_FIELD(p, fmt.vbi);
1461 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
1462 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1463 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_cap))
1464 break;
1465 CLEAR_AFTER_FIELD(p, fmt.sliced);
1466 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1467 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1468 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out))
be6c64e4
HV		 1469 break;
1470 CLEAR_AFTER_FIELD(p, fmt.pix);
48f2650a
HV		 1471 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg);
1472 /* just in case the driver zeroed it again */
1473 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1474 return ret;
be6c64e4 1475 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1476 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_mplane))
be6c64e4
HV		 1477 break;
1478 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1479 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
1480 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 1481 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_overlay))
be6c64e4
HV		 1482 break;
1483 CLEAR_AFTER_FIELD(p, fmt.win);
1484 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1485 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 1486 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_vbi_out))
be6c64e4
HV		 1487 break;
1488 CLEAR_AFTER_FIELD(p, fmt.vbi);
1489 return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
be6c64e4 1490 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 1491 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_out))
be6c64e4
HV		 1492 break;
1493 CLEAR_AFTER_FIELD(p, fmt.sliced);
1494 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
582c52cb
AP		 1495 case V4L2_BUF_TYPE_SDR_CAPTURE:
1496 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_s_fmt_sdr_cap))
1497 break;
1498 CLEAR_AFTER_FIELD(p, fmt.sdr);
1499 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg);
be6c64e4
HV		 1500 }
1501 return -EINVAL;
1502}
1503
1504static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
1505 struct file *file, void *fh, void *arg)
1506{
1507 struct v4l2_format *p = arg;
4b20259f
HV		 1508 struct video_device *vfd = video_devdata(file);
1509 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
582c52cb 1510 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
4b20259f
HV		 1511 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1512 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
48f2650a 1513 int ret;
be6c64e4 1514
d52e2381
LP		 1515 v4l_sanitize_format(p);
1516
be6c64e4
HV		 1517 switch (p->type) {
1518 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1519 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap))
be6c64e4
HV		 1520 break;
1521 CLEAR_AFTER_FIELD(p, fmt.pix);
48f2650a
HV		 1522 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg);
1523 /* just in case the driver zeroed it again */
1524 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1525 return ret;
be6c64e4 1526 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1527 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap_mplane))
be6c64e4
HV		 1528 break;
1529 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1530 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
1531 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1532 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_overlay))
be6c64e4
HV		 1533 break;
1534 CLEAR_AFTER_FIELD(p, fmt.win);
1535 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
4b20259f
HV		 1536 case V4L2_BUF_TYPE_VBI_CAPTURE:
1537 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_vbi_cap))
1538 break;
1539 CLEAR_AFTER_FIELD(p, fmt.vbi);
1540 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
1541 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1542 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_cap))
1543 break;
1544 CLEAR_AFTER_FIELD(p, fmt.sliced);
1545 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1546 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1547 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out))
be6c64e4
HV		 1548 break;
1549 CLEAR_AFTER_FIELD(p, fmt.pix);
48f2650a
HV		 1550 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg);
1551 /* just in case the driver zeroed it again */
1552 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1553 return ret;
be6c64e4 1554 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1555 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_mplane))
be6c64e4
HV		 1556 break;
1557 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1558 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
1559 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 1560 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_overlay))
be6c64e4
HV		 1561 break;
1562 CLEAR_AFTER_FIELD(p, fmt.win);
1563 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1564 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 1565 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_vbi_out))
be6c64e4
HV		 1566 break;
1567 CLEAR_AFTER_FIELD(p, fmt.vbi);
1568 return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
be6c64e4 1569 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 1570 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_out))
be6c64e4
HV		 1571 break;
1572 CLEAR_AFTER_FIELD(p, fmt.sliced);
1573 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
582c52cb
AP		 1574 case V4L2_BUF_TYPE_SDR_CAPTURE:
1575 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_try_fmt_sdr_cap))
1576 break;
1577 CLEAR_AFTER_FIELD(p, fmt.sdr);
1578 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg);
be6c64e4
HV		 1579 }
1580 return -EINVAL;
1581}
1582
e325b244
HV		 1583static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
1584 struct file *file, void *fh, void *arg)
1585{
1586 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
1587}
1588
1589static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
1590 struct file *file, void *fh, void *arg)
1591{
1592 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
1593}
1594
4b1e2e4d
HV		 1595static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,
1596 struct file *file, void *fh, void *arg)
1597{
1598 struct video_device *vfd = video_devdata(file);
1599 struct v4l2_tuner *p = arg;
82b655bf 1600 int err;
4b1e2e4d
HV		 1601
1602 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1603 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
82b655bf
HV		 1604 err = ops->vidioc_g_tuner(file, fh, p);
1605 if (!err)
1606 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1607 return err;
4b1e2e4d
HV		 1608}
1609
1610static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
1611 struct file *file, void *fh, void *arg)
1612{
1613 struct video_device *vfd = video_devdata(file);
1614 struct v4l2_tuner *p = arg;
1615
1616 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1617 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1618 return ops->vidioc_s_tuner(file, fh, p);
1619}
1620
82b655bf
HV		 1621static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,
1622 struct file *file, void *fh, void *arg)
1623{
1624 struct v4l2_modulator *p = arg;
1625 int err;
1626
1627 err = ops->vidioc_g_modulator(file, fh, p);
1628 if (!err)
1629 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1630 return err;
1631}
1632
4b1e2e4d
HV		 1633static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
1634 struct file *file, void *fh, void *arg)
1635{
1636 struct video_device *vfd = video_devdata(file);
1637 struct v4l2_frequency *p = arg;
1638
84099a28
AP		 1639 if (vfd->vfl_type == VFL_TYPE_SDR)
1640 p->type = V4L2_TUNER_ADC;
1641 else
1642 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1643 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
4b1e2e4d
HV		 1644 return ops->vidioc_g_frequency(file, fh, p);
1645}
1646
1647static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
1648 struct file *file, void *fh, void *arg)
1649{
1650 struct video_device *vfd = video_devdata(file);
b530a447 1651 const struct v4l2_frequency *p = arg;
4b1e2e4d
HV		 1652 enum v4l2_tuner_type type;
1653
84099a28
AP		 1654 if (vfd->vfl_type == VFL_TYPE_SDR) {
1655 if (p->type != V4L2_TUNER_ADC && p->type != V4L2_TUNER_RF)
1656 return -EINVAL;
1657 } else {
1658 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1659 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1660 if (type != p->type)
1661 return -EINVAL;
1662 }
4b1e2e4d
HV		 1663 return ops->vidioc_s_frequency(file, fh, p);
1664}
1665
1666static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
1667 struct file *file, void *fh, void *arg)
1668{
1669 struct video_device *vfd = video_devdata(file);
1670 struct v4l2_standard *p = arg;
1671 v4l2_std_id id = vfd->tvnorms, curr_id = 0;
1672 unsigned int index = p->index, i, j = 0;
1673 const char *descr = "";
1674
a5338190
HV		 1675 /* Return -ENODATA if the tvnorms for the current input
1676 or output is 0, meaning that it doesn't support this API. */
1677 if (id == 0)
1678 return -ENODATA;
1679
4b1e2e4d
HV		 1680 /* Return norm array in a canonical way */
1681 for (i = 0; i <= index && id; i++) {
1682 /* last std value in the standards array is 0, so this
1683 while always ends there since (id & 0) == 0. */
1684 while ((id & standards[j].std) != standards[j].std)
1685 j++;
1686 curr_id = standards[j].std;
1687 descr = standards[j].descr;
1688 j++;
1689 if (curr_id == 0)
1690 break;
1691 if (curr_id != V4L2_STD_PAL &&
1692 curr_id != V4L2_STD_SECAM &&
1693 curr_id != V4L2_STD_NTSC)
1694 id &= ~curr_id;
1695 }
1696 if (i <= index)
1697 return -EINVAL;
1698
1699 v4l2_video_std_construct(p, curr_id, descr);
1700 return 0;
1701}
1702
4b1e2e4d
HV		 1703static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
1704 struct file *file, void *fh, void *arg)
1705{
1706 struct video_device *vfd = video_devdata(file);
314527ac 1707 v4l2_std_id id = *(v4l2_std_id *)arg, norm;
4b1e2e4d 1708
314527ac 1709 norm = id & vfd->tvnorms;
4b1e2e4d
HV		 1710 if (vfd->tvnorms && !norm) /* Check if std is supported */
1711 return -EINVAL;
1712
1713 /* Calls the specific handler */
ca371575 1714 return ops->vidioc_s_std(file, fh, norm);
4b1e2e4d
HV		 1715}
1716
1717static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
1718 struct file *file, void *fh, void *arg)
1719{
1720 struct video_device *vfd = video_devdata(file);
1721 v4l2_std_id *p = arg;
1722
1723 /*
1a2c6866
HV		 1724 * If no signal is detected, then the driver should return
1725 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with
1726 * any standards that do not apply removed.
1727 *
4b1e2e4d
HV		 1728 * This means that tuners, audio and video decoders can join
1729 * their efforts to improve the standards detection.
1730 */
1731 *p = vfd->tvnorms;
1732 return ops->vidioc_querystd(file, fh, arg);
1733}
1734
1735static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
1736 struct file *file, void *fh, void *arg)
1737{
1738 struct video_device *vfd = video_devdata(file);
1739 struct v4l2_hw_freq_seek *p = arg;
1740 enum v4l2_tuner_type type;
1741
84099a28
AP		 1742 /* s_hw_freq_seek is not supported for SDR for now */
1743 if (vfd->vfl_type == VFL_TYPE_SDR)
1744 return -EINVAL;
1745
4b1e2e4d
HV		 1746 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1747 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1748 if (p->type != type)
1749 return -EINVAL;
1750 return ops->vidioc_s_hw_freq_seek(file, fh, p);
1751}
1752
737c097b
HV		 1753static int v4l_overlay(const struct v4l2_ioctl_ops *ops,
1754 struct file *file, void *fh, void *arg)
1755{
1756 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg);
1757}
1758
eb3728ed
HV		 1759static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,
1760 struct file *file, void *fh, void *arg)
1761{
1762 struct v4l2_requestbuffers *p = arg;
4b20259f 1763 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1764
1765 if (ret)
1766 return ret;
1767
633c98e5 1768 CLEAR_AFTER_FIELD(p, memory);
eb3728ed
HV		 1769
1770 return ops->vidioc_reqbufs(file, fh, p);
1771}
1772
1773static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,
1774 struct file *file, void *fh, void *arg)
1775{
1776 struct v4l2_buffer *p = arg;
4b20259f 1777 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1778
1779 return ret ? ret : ops->vidioc_querybuf(file, fh, p);
1780}
1781
1782static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,
1783 struct file *file, void *fh, void *arg)
1784{
1785 struct v4l2_buffer *p = arg;
4b20259f 1786 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1787
1788 return ret ? ret : ops->vidioc_qbuf(file, fh, p);
1789}
1790
1791static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,
1792 struct file *file, void *fh, void *arg)
1793{
1794 struct v4l2_buffer *p = arg;
4b20259f 1795 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1796
1797 return ret ? ret : ops->vidioc_dqbuf(file, fh, p);
1798}
1799
1800static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
1801 struct file *file, void *fh, void *arg)
1802{
1803 struct v4l2_create_buffers *create = arg;
4b20259f 1804 int ret = check_fmt(file, create->format.type);
eb3728ed 1805
d52e2381
LP		 1806 if (ret)
1807 return ret;
1808
5d351251
HV		 1809 CLEAR_AFTER_FIELD(create, format);
1810
d52e2381
LP		 1811 v4l_sanitize_format(&create->format);
1812
1813 ret = ops->vidioc_create_bufs(file, fh, create);
1814
1815 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1816 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1817 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1818
1819 return ret;
eb3728ed
HV		 1820}
1821
1822static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
1823 struct file *file, void *fh, void *arg)
1824{
1825 struct v4l2_buffer *b = arg;
4b20259f 1826 int ret = check_fmt(file, b->type);
eb3728ed
HV		 1827
1828 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
1829}
1830
1831static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
1832 struct file *file, void *fh, void *arg)
1833{
eb3728ed
HV		 1834 struct v4l2_streamparm *p = arg;
1835 v4l2_std_id std;
4b20259f 1836 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1837
1838 if (ret)
1839 return ret;
1840 if (ops->vidioc_g_parm)
1841 return ops->vidioc_g_parm(file, fh, p);
eb3728ed
HV		 1842 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1843 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1844 return -EINVAL;
1845 p->parm.capture.readbuffers = 2;
ca371575 1846 ret = ops->vidioc_g_std(file, fh, &std);
eb3728ed 1847 if (ret == 0)
ca371575 1848 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe);
eb3728ed
HV		 1849 return ret;
1850}
1851
1852static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
1853 struct file *file, void *fh, void *arg)
1854{
1855 struct v4l2_streamparm *p = arg;
4b20259f 1856 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1857
1858 return ret ? ret : ops->vidioc_s_parm(file, fh, p);
1859}
1860
efbceecd
HV		 1861static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,
1862 struct file *file, void *fh, void *arg)
1863{
1864 struct video_device *vfd = video_devdata(file);
1865 struct v4l2_queryctrl *p = arg;
7a3ed2d9
HV		 1866 struct v4l2_fh *vfh =
1867 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1868
1869 if (vfh && vfh->ctrl_handler)
1870 return v4l2_queryctrl(vfh->ctrl_handler, p);
1871 if (vfd->ctrl_handler)
1872 return v4l2_queryctrl(vfd->ctrl_handler, p);
1873 if (ops->vidioc_queryctrl)
1874 return ops->vidioc_queryctrl(file, fh, p);
1875 return -ENOTTY;
1876}
1877
e6bee368
HV		 1878static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops,
1879 struct file *file, void *fh, void *arg)
1880{
1881 struct video_device *vfd = video_devdata(file);
1882 struct v4l2_query_ext_ctrl *p = arg;
1883 struct v4l2_fh *vfh =
1884 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
1885
1886 if (vfh && vfh->ctrl_handler)
1887 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p);
1888 if (vfd->ctrl_handler)
1889 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p);
1890 if (ops->vidioc_query_ext_ctrl)
1891 return ops->vidioc_query_ext_ctrl(file, fh, p);
1892 return -ENOTTY;
1893}
1894
efbceecd
HV		 1895static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,
1896 struct file *file, void *fh, void *arg)
1897{
1898 struct video_device *vfd = video_devdata(file);
1899 struct v4l2_querymenu *p = arg;
7a3ed2d9
HV		 1900 struct v4l2_fh *vfh =
1901 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1902
1903 if (vfh && vfh->ctrl_handler)
1904 return v4l2_querymenu(vfh->ctrl_handler, p);
1905 if (vfd->ctrl_handler)
1906 return v4l2_querymenu(vfd->ctrl_handler, p);
1907 if (ops->vidioc_querymenu)
1908 return ops->vidioc_querymenu(file, fh, p);
1909 return -ENOTTY;
1910}
1911
1912static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops,
1913 struct file *file, void *fh, void *arg)
1914{
1915 struct video_device *vfd = video_devdata(file);
1916 struct v4l2_control *p = arg;
7a3ed2d9
HV		 1917 struct v4l2_fh *vfh =
1918 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1919 struct v4l2_ext_controls ctrls;
1920 struct v4l2_ext_control ctrl;
1921
1922 if (vfh && vfh->ctrl_handler)
1923 return v4l2_g_ctrl(vfh->ctrl_handler, p);
1924 if (vfd->ctrl_handler)
1925 return v4l2_g_ctrl(vfd->ctrl_handler, p);
1926 if (ops->vidioc_g_ctrl)
1927 return ops->vidioc_g_ctrl(file, fh, p);
1928 if (ops->vidioc_g_ext_ctrls == NULL)
1929 return -ENOTTY;
1930
1931 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1932 ctrls.count = 1;
1933 ctrls.controls = &ctrl;
1934 ctrl.id = p->id;
1935 ctrl.value = p->value;
1936 if (check_ext_ctrls(&ctrls, 1)) {
1937 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
1938
1939 if (ret == 0)
1940 p->value = ctrl.value;
1941 return ret;
1942 }
1943 return -EINVAL;
1944}
1945
1946static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,
1947 struct file *file, void *fh, void *arg)
1948{
1949 struct video_device *vfd = video_devdata(file);
1950 struct v4l2_control *p = arg;
7a3ed2d9
HV		 1951 struct v4l2_fh *vfh =
1952 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1953 struct v4l2_ext_controls ctrls;
1954 struct v4l2_ext_control ctrl;
1955
1956 if (vfh && vfh->ctrl_handler)
1957 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
1958 if (vfd->ctrl_handler)
1959 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
1960 if (ops->vidioc_s_ctrl)
1961 return ops->vidioc_s_ctrl(file, fh, p);
1962 if (ops->vidioc_s_ext_ctrls == NULL)
1963 return -ENOTTY;
1964
1965 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1966 ctrls.count = 1;
1967 ctrls.controls = &ctrl;
1968 ctrl.id = p->id;
1969 ctrl.value = p->value;
1970 if (check_ext_ctrls(&ctrls, 1))
1971 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
1972 return -EINVAL;
1973}
1974
1975static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1976 struct file *file, void *fh, void *arg)
1977{
1978 struct video_device *vfd = video_devdata(file);
1979 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 1980 struct v4l2_fh *vfh =
1981 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1982
1983 p->error_idx = p->count;
1984 if (vfh && vfh->ctrl_handler)
1985 return v4l2_g_ext_ctrls(vfh->ctrl_handler, p);
1986 if (vfd->ctrl_handler)
1987 return v4l2_g_ext_ctrls(vfd->ctrl_handler, p);
1988 if (ops->vidioc_g_ext_ctrls == NULL)
1989 return -ENOTTY;
1990 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :
1991 -EINVAL;
1992}
1993
1994static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1995 struct file *file, void *fh, void *arg)
1996{
1997 struct video_device *vfd = video_devdata(file);
1998 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 1999 struct v4l2_fh *vfh =
2000 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 2001
2002 p->error_idx = p->count;
2003 if (vfh && vfh->ctrl_handler)
2004 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, p);
2005 if (vfd->ctrl_handler)
2006 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, p);
2007 if (ops->vidioc_s_ext_ctrls == NULL)
2008 return -ENOTTY;
2009 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :
2010 -EINVAL;
2011}
2012
2013static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2014 struct file *file, void *fh, void *arg)
2015{
2016 struct video_device *vfd = video_devdata(file);
2017 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 2018 struct v4l2_fh *vfh =
2019 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 2020
2021 p->error_idx = p->count;
2022 if (vfh && vfh->ctrl_handler)
2023 return v4l2_try_ext_ctrls(vfh->ctrl_handler, p);
2024 if (vfd->ctrl_handler)
2025 return v4l2_try_ext_ctrls(vfd->ctrl_handler, p);
2026 if (ops->vidioc_try_ext_ctrls == NULL)
2027 return -ENOTTY;
2028 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :
2029 -EINVAL;
2030}
2031
d84f2d94
HV		 2032static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
2033 struct file *file, void *fh, void *arg)
2034{
2035 struct v4l2_crop *p = arg;
2036 struct v4l2_selection s = {
2037 .type = p->type,
2038 };
2039 int ret;
2040
2041 if (ops->vidioc_g_crop)
2042 return ops->vidioc_g_crop(file, fh, p);
2043 /* simulate capture crop using selection api */
2044
2045 /* crop means compose for output devices */
2046 if (V4L2_TYPE_IS_OUTPUT(p->type))
2047 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
2048 else
2049 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
2050
2051 ret = ops->vidioc_g_selection(file, fh, &s);
2052
2053 /* copying results to old structure on success */
2054 if (!ret)
2055 p->c = s.r;
2056 return ret;
2057}
2058
2059static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
2060 struct file *file, void *fh, void *arg)
2061{
2062 struct v4l2_crop *p = arg;
2063 struct v4l2_selection s = {
2064 .type = p->type,
2065 .r = p->c,
2066 };
2067
2068 if (ops->vidioc_s_crop)
2069 return ops->vidioc_s_crop(file, fh, p);
2070 /* simulate capture crop using selection api */
2071
2072 /* crop means compose for output devices */
2073 if (V4L2_TYPE_IS_OUTPUT(p->type))
2074 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
2075 else
2076 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
2077
2078 return ops->vidioc_s_selection(file, fh, &s);
2079}
2080
2081static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
2082 struct file *file, void *fh, void *arg)
2083{
2084 struct v4l2_cropcap *p = arg;
d84f2d94 2085
9409945c
HV		 2086 if (ops->vidioc_g_selection) {
2087 struct v4l2_selection s = { .type = p->type };
2088 int ret;
d84f2d94 2089
9409945c
HV		 2090 /* obtaining bounds */
2091 if (V4L2_TYPE_IS_OUTPUT(p->type))
2092 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
2093 else
2094 s.target = V4L2_SEL_TGT_CROP_BOUNDS;
d84f2d94 2095
9409945c
HV		 2096 ret = ops->vidioc_g_selection(file, fh, &s);
2097 if (ret)
2098 return ret;
2099 p->bounds = s.r;
d84f2d94 2100
9409945c
HV		 2101 /* obtaining defrect */
2102 if (V4L2_TYPE_IS_OUTPUT(p->type))
2103 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
2104 else
2105 s.target = V4L2_SEL_TGT_CROP_DEFAULT;
d84f2d94 2106
9409945c
HV		 2107 ret = ops->vidioc_g_selection(file, fh, &s);
2108 if (ret)
2109 return ret;
2110 p->defrect = s.r;
2111 }
d84f2d94
HV		 2112
2113 /* setting trivial pixelaspect */
2114 p->pixelaspect.numerator = 1;
2115 p->pixelaspect.denominator = 1;
9409945c
HV		 2116
2117 if (ops->vidioc_cropcap)
2118 return ops->vidioc_cropcap(file, fh, p);
2119
d84f2d94
HV		 2120 return 0;
2121}
2122
f16f77b0
HV		 2123static int v4l_log_status(const struct v4l2_ioctl_ops *ops,
2124 struct file *file, void *fh, void *arg)
2125{
2126 struct video_device *vfd = video_devdata(file);
2127 int ret;
2128
2129 if (vfd->v4l2_dev)
2130 pr_info("%s: ================= START STATUS =================\n",
2131 vfd->v4l2_dev->name);
2132 ret = ops->vidioc_log_status(file, fh);
2133 if (vfd->v4l2_dev)
2134 pr_info("%s: ================== END STATUS ==================\n",
2135 vfd->v4l2_dev->name);
2136 return ret;
2137}
2138
2139static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
2140 struct file *file, void *fh, void *arg)
2141{
2142#ifdef CONFIG_VIDEO_ADV_DEBUG
2143 struct v4l2_dbg_register *p = arg;
79b0c640
HV		 2144 struct video_device *vfd = video_devdata(file);
2145 struct v4l2_subdev *sd;
2146 int idx = 0;
f16f77b0
HV		 2147
2148 if (!capable(CAP_SYS_ADMIN))
2149 return -EPERM;
3eef2510 2150 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
79b0c640
HV		 2151 if (vfd->v4l2_dev == NULL)
2152 return -EINVAL;
3eef2510
HV		 2153 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2154 if (p->match.addr == idx++)
79b0c640 2155 return v4l2_subdev_call(sd, core, g_register, p);
79b0c640
HV		 2156 return -EINVAL;
2157 }
191b79b0
HV		 2158 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2159 (ops->vidioc_g_chip_info || p->match.addr == 0))
79b0c640
HV		 2160 return ops->vidioc_g_register(file, fh, p);
2161 return -EINVAL;
f16f77b0
HV		 2162#else
2163 return -ENOTTY;
2164#endif
2165}
2166
2167static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
2168 struct file *file, void *fh, void *arg)
2169{
2170#ifdef CONFIG_VIDEO_ADV_DEBUG
977ba3b1 2171 const struct v4l2_dbg_register *p = arg;
79b0c640
HV		 2172 struct video_device *vfd = video_devdata(file);
2173 struct v4l2_subdev *sd;
2174 int idx = 0;
f16f77b0
HV		 2175
2176 if (!capable(CAP_SYS_ADMIN))
2177 return -EPERM;
3eef2510 2178 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
79b0c640
HV		 2179 if (vfd->v4l2_dev == NULL)
2180 return -EINVAL;
3eef2510
HV		 2181 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2182 if (p->match.addr == idx++)
79b0c640 2183 return v4l2_subdev_call(sd, core, s_register, p);
79b0c640
HV		 2184 return -EINVAL;
2185 }
191b79b0
HV		 2186 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2187 (ops->vidioc_g_chip_info || p->match.addr == 0))
79b0c640
HV		 2188 return ops->vidioc_s_register(file, fh, p);
2189 return -EINVAL;
f16f77b0
HV		 2190#else
2191 return -ENOTTY;
2192#endif
2193}
2194
96b03d2a 2195static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,
79b0c640
HV		 2196 struct file *file, void *fh, void *arg)
2197{
cd634f1b 2198#ifdef CONFIG_VIDEO_ADV_DEBUG
79b0c640 2199 struct video_device *vfd = video_devdata(file);
96b03d2a 2200 struct v4l2_dbg_chip_info *p = arg;
79b0c640
HV		 2201 struct v4l2_subdev *sd;
2202 int idx = 0;
2203
2204 switch (p->match.type) {
2205 case V4L2_CHIP_MATCH_BRIDGE:
79b0c640
HV		 2206 if (ops->vidioc_s_register)
2207 p->flags |= V4L2_CHIP_FL_WRITABLE;
2208 if (ops->vidioc_g_register)
2209 p->flags |= V4L2_CHIP_FL_READABLE;
1c1d86a1 2210 strlcpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));
96b03d2a
HV		 2211 if (ops->vidioc_g_chip_info)
2212 return ops->vidioc_g_chip_info(file, fh, arg);
0f0fe4b9
HV		 2213 if (p->match.addr)
2214 return -EINVAL;
79b0c640
HV		 2215 return 0;
2216
3eef2510 2217 case V4L2_CHIP_MATCH_SUBDEV:
79b0c640
HV		 2218 if (vfd->v4l2_dev == NULL)
2219 break;
2220 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {
3eef2510
HV		 2221 if (p->match.addr != idx++)
2222 continue;
2223 if (sd->ops->core && sd->ops->core->s_register)
2224 p->flags |= V4L2_CHIP_FL_WRITABLE;
2225 if (sd->ops->core && sd->ops->core->g_register)
2226 p->flags |= V4L2_CHIP_FL_READABLE;
2227 strlcpy(p->name, sd->name, sizeof(p->name));
2228 return 0;
79b0c640
HV		 2229 }
2230 break;
2231 }
2232 return -EINVAL;
cd634f1b
HV		 2233#else
2234 return -ENOTTY;
2235#endif
79b0c640
HV		 2236}
2237
458aa4a6
HV		 2238static int v4l_dqevent(const struct v4l2_ioctl_ops *ops,
2239 struct file *file, void *fh, void *arg)
2240{
2241 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK);
2242}
2243
2244static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,
2245 struct file *file, void *fh, void *arg)
2246{
2247 return ops->vidioc_subscribe_event(fh, arg);
2248}
2249
2250static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,
2251 struct file *file, void *fh, void *arg)
2252{
2253 return ops->vidioc_unsubscribe_event(fh, arg);
2254}
2255
2256static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,
2257 struct file *file, void *fh, void *arg)
2258{
2259 struct v4l2_sliced_vbi_cap *p = arg;
4b20259f
HV		 2260 int ret = check_fmt(file, p->type);
2261
2262 if (ret)
2263 return ret;
458aa4a6
HV		 2264
2265 /* Clear up to type, everything after type is zeroed already */
2266 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
2267
2268 return ops->vidioc_g_sliced_vbi_cap(file, fh, p);
2269}
2270
82b655bf
HV		 2271static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
2272 struct file *file, void *fh, void *arg)
2273{
2274 struct video_device *vfd = video_devdata(file);
2275 struct v4l2_frequency_band *p = arg;
2276 enum v4l2_tuner_type type;
2277 int err;
2278
84099a28
AP		 2279 if (vfd->vfl_type == VFL_TYPE_SDR) {
2280 if (p->type != V4L2_TUNER_ADC && p->type != V4L2_TUNER_RF)
2281 return -EINVAL;
2282 type = p->type;
2283 } else {
2284 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2285 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2286 if (type != p->type)
2287 return -EINVAL;
2288 }
a7f404af
HV		 2289 if (ops->vidioc_enum_freq_bands) {
2290 err = ops->vidioc_enum_freq_bands(file, fh, p);
2291 if (err != -ENOTTY)
2292 return err;
2293 }
73f35418 2294 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) {
82b655bf
HV		 2295 struct v4l2_tuner t = {
2296 .index = p->tuner,
2297 .type = type,
2298 };
2299
aa4d9b53
HV		 2300 if (p->index)
2301 return -EINVAL;
82b655bf
HV		 2302 err = ops->vidioc_g_tuner(file, fh, &t);
2303 if (err)
2304 return err;
2305 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2306 p->rangelow = t.rangelow;
2307 p->rangehigh = t.rangehigh;
2308 p->modulation = (type == V4L2_TUNER_RADIO) ?
2309 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2310 return 0;
2311 }
73f35418 2312 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) {
82b655bf
HV		 2313 struct v4l2_modulator m = {
2314 .index = p->tuner,
2315 };
2316
2317 if (type != V4L2_TUNER_RADIO)
2318 return -EINVAL;
aa4d9b53
HV		 2319 if (p->index)
2320 return -EINVAL;
82b655bf
HV		 2321 err = ops->vidioc_g_modulator(file, fh, &m);
2322 if (err)
2323 return err;
2324 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2325 p->rangelow = m.rangelow;
2326 p->rangehigh = m.rangehigh;
2327 p->modulation = (type == V4L2_TUNER_RADIO) ?
2328 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2329 return 0;
2330 }
2331 return -ENOTTY;
2332}
2333
4839e6c2
HV		 2334struct v4l2_ioctl_info {
2335 unsigned int ioctl;
27cd2aba 2336 u32 flags;
4839e6c2 2337 const char * const name;
86748f35
HV		 2338 union {
2339 u32 offset;
2340 int (*func)(const struct v4l2_ioctl_ops *ops,
2341 struct file *file, void *fh, void *p);
26ddcbcc 2342 } u;
86748f35 2343 void (*debug)(const void *arg, bool write_only);
4839e6c2
HV		 2344};
2345
2346/* This control needs a priority check */
2347#define INFO_FL_PRIO (1 << 0)
2348/* This control can be valid if the filehandle passes a control handler. */
2349#define INFO_FL_CTRL (1 << 1)
86748f35
HV		 2350/* This is a standard ioctl, no need for special code */
2351#define INFO_FL_STD (1 << 2)
2352/* This is ioctl has its own function */
2353#define INFO_FL_FUNC (1 << 3)
5a5adf6b
HV		 2354/* Queuing ioctl */
2355#define INFO_FL_QUEUE (1 << 4)
27cd2aba
HV		 2356/* Zero struct from after the field to the end */
2357#define INFO_FL_CLEAR(v4l2_struct, field) \
2358 ((offsetof(struct v4l2_struct, field) + \
2359 sizeof(((struct v4l2_struct *)0)->field)) << 16)
2360#define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
4839e6c2 2361
86748f35
HV		 2362#define IOCTL_INFO_STD(_ioctl, _vidioc, _debug, _flags) \
2363 [_IOC_NR(_ioctl)] = { \
2364 .ioctl = _ioctl, \
2365 .flags = _flags | INFO_FL_STD, \
2366 .name = #_ioctl, \
26ddcbcc 2367 .u.offset = offsetof(struct v4l2_ioctl_ops, _vidioc), \
86748f35
HV		 2368 .debug = _debug, \
2369 }
2370
2371#define IOCTL_INFO_FNC(_ioctl, _func, _debug, _flags) \
2372 [_IOC_NR(_ioctl)] = { \
2373 .ioctl = _ioctl, \
2374 .flags = _flags | INFO_FL_FUNC, \
2375 .name = #_ioctl, \
26ddcbcc 2376 .u.func = _func, \
86748f35
HV		 2377 .debug = _debug, \
2378 }
2379
4839e6c2 2380static struct v4l2_ioctl_info v4l2_ioctls[] = {
59076122 2381 IOCTL_INFO_FNC(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
be6c64e4 2382 IOCTL_INFO_FNC(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)),
e5ce558a 2383 IOCTL_INFO_FNC(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0),
be6c64e4 2384 IOCTL_INFO_FNC(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
5a5adf6b
HV		 2385 IOCTL_INFO_FNC(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2386 IOCTL_INFO_FNC(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
be6c64e4
HV		 2387 IOCTL_INFO_STD(VIDIOC_G_FBUF, vidioc_g_fbuf, v4l_print_framebuffer, 0),
2388 IOCTL_INFO_STD(VIDIOC_S_FBUF, vidioc_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
737c097b 2389 IOCTL_INFO_FNC(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO),
5a5adf6b 2390 IOCTL_INFO_FNC(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),
b799d09a 2391 IOCTL_INFO_STD(VIDIOC_EXPBUF, vidioc_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)),
5a5adf6b
HV		 2392 IOCTL_INFO_FNC(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),
2393 IOCTL_INFO_FNC(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2394 IOCTL_INFO_FNC(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
eb3728ed
HV		 2395 IOCTL_INFO_FNC(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
2396 IOCTL_INFO_FNC(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
ca371575 2397 IOCTL_INFO_STD(VIDIOC_G_STD, vidioc_g_std, v4l_print_std, 0),
4b1e2e4d
HV		 2398 IOCTL_INFO_FNC(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
2399 IOCTL_INFO_FNC(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
59076122 2400 IOCTL_INFO_FNC(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
efbceecd
HV		 2401 IOCTL_INFO_FNC(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
2402 IOCTL_INFO_FNC(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
4b1e2e4d
HV		 2403 IOCTL_INFO_FNC(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
2404 IOCTL_INFO_FNC(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
59076122
HV		 2405 IOCTL_INFO_STD(VIDIOC_G_AUDIO, vidioc_g_audio, v4l_print_audio, 0),
2406 IOCTL_INFO_STD(VIDIOC_S_AUDIO, vidioc_s_audio, v4l_print_audio, INFO_FL_PRIO),
efbceecd
HV		 2407 IOCTL_INFO_FNC(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
2408 IOCTL_INFO_FNC(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
59076122
HV		 2409 IOCTL_INFO_STD(VIDIOC_G_INPUT, vidioc_g_input, v4l_print_u32, 0),
2410 IOCTL_INFO_FNC(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
f9402a94
HV		 2411 IOCTL_INFO_STD(VIDIOC_G_EDID, vidioc_g_edid, v4l_print_edid, 0),
2412 IOCTL_INFO_STD(VIDIOC_S_EDID, vidioc_s_edid, v4l_print_edid, INFO_FL_PRIO),
59076122
HV		 2413 IOCTL_INFO_STD(VIDIOC_G_OUTPUT, vidioc_g_output, v4l_print_u32, 0),
2414 IOCTL_INFO_FNC(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
2415 IOCTL_INFO_FNC(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
2416 IOCTL_INFO_STD(VIDIOC_G_AUDOUT, vidioc_g_audout, v4l_print_audioout, 0),
2417 IOCTL_INFO_STD(VIDIOC_S_AUDOUT, vidioc_s_audout, v4l_print_audioout, INFO_FL_PRIO),
82b655bf 2418 IOCTL_INFO_FNC(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
4b1e2e4d
HV		 2419 IOCTL_INFO_STD(VIDIOC_S_MODULATOR, vidioc_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
2420 IOCTL_INFO_FNC(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
2421 IOCTL_INFO_FNC(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
d84f2d94
HV		 2422 IOCTL_INFO_FNC(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
2423 IOCTL_INFO_FNC(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
2424 IOCTL_INFO_FNC(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
865c4642
HV		 2425 IOCTL_INFO_STD(VIDIOC_G_SELECTION, vidioc_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)),
2426 IOCTL_INFO_STD(VIDIOC_S_SELECTION, vidioc_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)),
d806f2df
HV		 2427 IOCTL_INFO_STD(VIDIOC_G_JPEGCOMP, vidioc_g_jpegcomp, v4l_print_jpegcompression, 0),
2428 IOCTL_INFO_STD(VIDIOC_S_JPEGCOMP, vidioc_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
4b1e2e4d 2429 IOCTL_INFO_FNC(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
be6c64e4 2430 IOCTL_INFO_FNC(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
59076122
HV		 2431 IOCTL_INFO_STD(VIDIOC_ENUMAUDIO, vidioc_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
2432 IOCTL_INFO_STD(VIDIOC_ENUMAUDOUT, vidioc_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
d0547cba
HV		 2433 IOCTL_INFO_FNC(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
2434 IOCTL_INFO_FNC(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
458aa4a6 2435 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 2436 IOCTL_INFO_FNC(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
efbceecd
HV		 2437 IOCTL_INFO_FNC(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2438 IOCTL_INFO_FNC(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL),
9bc31633 2439 IOCTL_INFO_FNC(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
458aa4a6
HV		 2440 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMESIZES, vidioc_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
2441 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMEINTERVALS, vidioc_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
d806f2df
HV		 2442 IOCTL_INFO_STD(VIDIOC_G_ENC_INDEX, vidioc_g_enc_index, v4l_print_enc_idx, 0),
2443 IOCTL_INFO_STD(VIDIOC_ENCODER_CMD, vidioc_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2444 IOCTL_INFO_STD(VIDIOC_TRY_ENCODER_CMD, vidioc_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2445 IOCTL_INFO_STD(VIDIOC_DECODER_CMD, vidioc_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
2446 IOCTL_INFO_STD(VIDIOC_TRY_DECODER_CMD, vidioc_try_decoder_cmd, v4l_print_decoder_cmd, 0),
f16f77b0
HV		 2447 IOCTL_INFO_FNC(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
2448 IOCTL_INFO_FNC(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
4b1e2e4d 2449 IOCTL_INFO_FNC(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
efc626b0
HV		 2450 IOCTL_INFO_STD(VIDIOC_S_DV_TIMINGS, vidioc_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO),
2451 IOCTL_INFO_STD(VIDIOC_G_DV_TIMINGS, vidioc_g_dv_timings, v4l_print_dv_timings, 0),
458aa4a6
HV		 2452 IOCTL_INFO_FNC(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
2453 IOCTL_INFO_FNC(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
2454 IOCTL_INFO_FNC(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
5a5adf6b
HV		 2455 IOCTL_INFO_FNC(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2456 IOCTL_INFO_FNC(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
efc626b0
HV		 2457 IOCTL_INFO_STD(VIDIOC_ENUM_DV_TIMINGS, vidioc_enum_dv_timings, v4l_print_enum_dv_timings, 0),
2458 IOCTL_INFO_STD(VIDIOC_QUERY_DV_TIMINGS, vidioc_query_dv_timings, v4l_print_dv_timings, 0),
a1acb8f9 2459 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 2460 IOCTL_INFO_FNC(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
96b03d2a 2461 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 2462 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		 2463};
2464#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
2465
2466bool v4l2_is_known_ioctl(unsigned int cmd)
2467{
2468 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2469 return false;
2470 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
2471}
2472
5a5adf6b
HV		 2473struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd)
2474{
2475 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2476 return vdev->lock;
2477 if (test_bit(_IOC_NR(cmd), vdev->disable_locking))
2478 return NULL;
2479 if (vdev->queue && vdev->queue->lock &&
2480 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
2481 return vdev->queue->lock;
2482 return vdev->lock;
2483}
2484
4839e6c2
HV		 2485/* Common ioctl debug function. This function can be used by
2486 external ioctl messages as well as internal V4L ioctl */
4a085168 2487void v4l_printk_ioctl(const char *prefix, unsigned int cmd)
4839e6c2 2488{
86748f35 2489 const char *dir, *type;
4839e6c2 2490
4a085168
HV		 2491 if (prefix)
2492 printk(KERN_DEBUG "%s: ", prefix);
2493
4839e6c2
HV		 2494 switch (_IOC_TYPE(cmd)) {
2495 case 'd':
2496 type = "v4l2_int";
2497 break;
2498 case 'V':
2499 if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
2500 type = "v4l2";
2501 break;
2502 }
86748f35 2503 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
4839e6c2
HV		 2504 return;
2505 default:
2506 type = "unknown";
86748f35 2507 break;
4839e6c2
HV		 2508 }
2509
2510 switch (_IOC_DIR(cmd)) {
2511 case _IOC_NONE: dir = "--"; break;
2512 case _IOC_READ: dir = "r-"; break;
2513 case _IOC_WRITE: dir = "-w"; break;
2514 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
2515 default: dir = "*ERR*"; break;
2516 }
86748f35 2517 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
4839e6c2
HV		 2518 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
2519}
2520EXPORT_SYMBOL(v4l_printk_ioctl);
2521
069b7479 2522static long __video_do_ioctl(struct file *file,
35ea11ff
HV		 2523 unsigned int cmd, void *arg)
2524{
2525 struct video_device *vfd = video_devdata(file);
a399810c 2526 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
86748f35
HV		 2527 bool write_only = false;
2528 struct v4l2_ioctl_info default_info;
2529 const struct v4l2_ioctl_info *info;
d5fbf32f 2530 void *fh = file->private_data;
99cd47bc 2531 struct v4l2_fh *vfh = NULL;
17028cdb 2532 int dev_debug = vfd->dev_debug;
9190d191 2533 long ret = -ENOTTY;
35ea11ff 2534
6a717883 2535 if (ops == NULL) {
4a085168
HV		 2536 pr_warn("%s: has no ioctl_ops.\n",
2537 video_device_node_name(vfd));
9190d191 2538 return ret;
6a717883
HV		 2539 }
2540
b7284bb0 2541 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
99cd47bc
HV		 2542 vfh = file->private_data;
2543
48ea0be0 2544 if (v4l2_is_known_ioctl(cmd)) {
86748f35 2545 info = &v4l2_ioctls[_IOC_NR(cmd)];
48ea0be0 2546
2e5e435f 2547 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) &&
48ea0be0 2548 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
86748f35 2549 goto done;
4b902fec 2550
b7284bb0 2551 if (vfh && (info->flags & INFO_FL_PRIO)) {
4b902fec
HV		 2552 ret = v4l2_prio_check(vfd->prio, vfh->prio);
2553 if (ret)
86748f35 2554 goto done;
4b902fec 2555 }
86748f35
HV		 2556 } else {
2557 default_info.ioctl = cmd;
2558 default_info.flags = 0;
f18d8e07 2559 default_info.debug = v4l_print_default;
86748f35 2560 info = &default_info;
48ea0be0
HV		 2561 }
2562
86748f35 2563 write_only = _IOC_DIR(cmd) == _IOC_WRITE;
86748f35
HV		 2564 if (info->flags & INFO_FL_STD) {
2565 typedef int (*vidioc_op)(struct file *file, void *fh, void *p);
2566 const void *p = vfd->ioctl_ops;
26ddcbcc 2567 const vidioc_op *vidioc = p + info->u.offset;
86748f35
HV		 2568
2569 ret = (*vidioc)(file, fh, arg);
86748f35 2570 } else if (info->flags & INFO_FL_FUNC) {
26ddcbcc 2571 ret = info->u.func(ops, file, fh, arg);
f18d8e07
HV		 2572 } else if (!ops->vidioc_default) {
2573 ret = -ENOTTY;
2574 } else {
2575 ret = ops->vidioc_default(file, fh,
b7284bb0 2576 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
f18d8e07 2577 cmd, arg);
48ea0be0 2578 }
99cd47bc 2579
86748f35 2580done:
17028cdb
HV		 2581 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) {
2582 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) &&
2583 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF))
2584 return ret;
2585
4a085168 2586 v4l_printk_ioctl(video_device_node_name(vfd), cmd);
86748f35 2587 if (ret < 0)
505d04bd 2588 pr_cont(": error %ld", ret);
17028cdb 2589 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG))
86748f35 2590 pr_cont("\n");
86748f35
HV		 2591 else if (_IOC_DIR(cmd) == _IOC_NONE)
2592 info->debug(arg, write_only);
2593 else {
2594 pr_cont(": ");
2595 info->debug(arg, write_only);
35ea11ff
HV		 2596 }
2597 }
2598
2599 return ret;
2600}
2601
d14e6d76 2602static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
ba2d35c1 2603 void __user **user_ptr, void ***kernel_ptr)
d14e6d76
PO		 2604{
2605 int ret = 0;
2606
2607 switch (cmd) {
96b1a702 2608 case VIDIOC_PREPARE_BUF:
d14e6d76
PO		 2609 case VIDIOC_QUERYBUF:
2610 case VIDIOC_QBUF:
2611 case VIDIOC_DQBUF: {
2612 struct v4l2_buffer *buf = parg;
2613
2614 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
2615 if (buf->length > VIDEO_MAX_PLANES) {
2616 ret = -EINVAL;
2617 break;
2618 }
2619 *user_ptr = (void __user *)buf->m.planes;
ba2d35c1 2620 *kernel_ptr = (void **)&buf->m.planes;
d14e6d76
PO		 2621 *array_size = sizeof(struct v4l2_plane) * buf->length;
2622 ret = 1;
2623 }
2624 break;
2625 }
2626
dd519bb3
HV		 2627 case VIDIOC_G_EDID:
2628 case VIDIOC_S_EDID: {
2629 struct v4l2_edid *edid = parg;
ed45ce2c
HV		 2630
2631 if (edid->blocks) {
1b8b10cc
HV		 2632 if (edid->blocks > 256) {
2633 ret = -EINVAL;
2634 break;
2635 }
ed45ce2c 2636 *user_ptr = (void __user *)edid->edid;
ba2d35c1 2637 *kernel_ptr = (void **)&edid->edid;
ed45ce2c
HV		 2638 *array_size = edid->blocks * 128;
2639 ret = 1;
2640 }
2641 break;
2642 }
2643
d14e6d76
PO		 2644 case VIDIOC_S_EXT_CTRLS:
2645 case VIDIOC_G_EXT_CTRLS:
2646 case VIDIOC_TRY_EXT_CTRLS: {
2647 struct v4l2_ext_controls *ctrls = parg;
2648
2649 if (ctrls->count != 0) {
6c06108b
DC		 2650 if (ctrls->count > V4L2_CID_MAX_CTRLS) {
2651 ret = -EINVAL;
2652 break;
2653 }
d14e6d76 2654 *user_ptr = (void __user *)ctrls->controls;
ba2d35c1 2655 *kernel_ptr = (void **)&ctrls->controls;
d14e6d76
PO		 2656 *array_size = sizeof(struct v4l2_ext_control)
2657 * ctrls->count;
2658 ret = 1;
2659 }
2660 break;
2661 }
2662 }
2663
2664 return ret;
2665}
2666
fc0a8079
LP		 2667long
2668video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
2669 v4l2_kioctl func)
35ea11ff
HV		 2670{
2671 char sbuf[128];
2672 void *mbuf = NULL;
1d94aa36 2673 void *parg = (void *)arg;
069b7479 2674 long err = -EINVAL;
d14e6d76
PO		 2675 bool has_array_args;
2676 size_t array_size = 0;
35ea11ff 2677 void __user *user_ptr = NULL;
d14e6d76 2678 void **kernel_ptr = NULL;
35ea11ff 2679
35ea11ff 2680 /* Copy arguments into temp kernel buffer */
337f9d20 2681 if (_IOC_DIR(cmd) != _IOC_NONE) {
35ea11ff
HV		 2682 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
2683 parg = sbuf;
2684 } else {
2685 /* too big to allocate from stack */
2686 mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
2687 if (NULL == mbuf)
2688 return -ENOMEM;
2689 parg = mbuf;
2690 }
2691
2692 err = -EFAULT;
19c96e4b 2693 if (_IOC_DIR(cmd) & _IOC_WRITE) {
27cd2aba
HV		 2694 unsigned int n = _IOC_SIZE(cmd);
2695
2696 /*
2697 * In some cases, only a few fields are used as input,
2698 * i.e. when the app sets "index" and then the driver
2699 * fills in the rest of the structure for the thing
2700 * with that index. We only need to copy up the first
2701 * non-input field.
2702 */
2703 if (v4l2_is_known_ioctl(cmd)) {
2704 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags;
2705 if (flags & INFO_FL_CLEAR_MASK)
2706 n = (flags & INFO_FL_CLEAR_MASK) >> 16;
2707 }
19c96e4b
TP		 2708
2709 if (copy_from_user(parg, (void __user *)arg, n))
35ea11ff 2710 goto out;
19c96e4b
TP		 2711
2712 /* zero out anything we don't copy from userspace */
2713 if (n < _IOC_SIZE(cmd))
2714 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n);
337f9d20
TP		 2715 } else {
2716 /* read-only ioctl */
2717 memset(parg, 0, _IOC_SIZE(cmd));
19c96e4b 2718 }
35ea11ff
HV		 2719 }
2720
d14e6d76
PO		 2721 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
2722 if (err < 0)
2723 goto out;
2724 has_array_args = err;
35ea11ff 2725
d14e6d76
PO		 2726 if (has_array_args) {
2727 /*
2728 * When adding new types of array args, make sure that the
2729 * parent argument to ioctl (which contains the pointer to the
2730 * array) fits into sbuf (so that mbuf will still remain
2731 * unused up to here).
2732 */
2733 mbuf = kmalloc(array_size, GFP_KERNEL);
2734 err = -ENOMEM;
2735 if (NULL == mbuf)
2736 goto out_array_args;
2737 err = -EFAULT;
2738 if (copy_from_user(mbuf, user_ptr, array_size))
2739 goto out_array_args;
2740 *kernel_ptr = mbuf;
35ea11ff
HV		 2741 }
2742
2743 /* Handles IOCTL */
fc0a8079 2744 err = func(file, cmd, parg);
35ea11ff 2745 if (err == -ENOIOCTLCMD)
02bbb814 2746 err = -ENOTTY;
aa32f4c0
HV		 2747 if (err == 0) {
2748 if (cmd == VIDIOC_DQBUF)
2749 trace_v4l2_dqbuf(video_devdata(file)->minor, parg);
2750 else if (cmd == VIDIOC_QBUF)
2751 trace_v4l2_qbuf(video_devdata(file)->minor, parg);
2752 }
35ea11ff 2753
d14e6d76 2754 if (has_array_args) {
ba2d35c1 2755 *kernel_ptr = (void __force *)user_ptr;
d14e6d76 2756 if (copy_to_user(user_ptr, mbuf, array_size))
35ea11ff 2757 err = -EFAULT;
d14e6d76 2758 goto out_array_args;
35ea11ff 2759 }
5d7758ee
HV		 2760 /* VIDIOC_QUERY_DV_TIMINGS can return an error, but still have valid
2761 results that must be returned. */
2762 if (err < 0 && cmd != VIDIOC_QUERY_DV_TIMINGS)
35ea11ff
HV		 2763 goto out;
2764
d14e6d76 2765out_array_args:
35ea11ff
HV		 2766 /* Copy results into user buffer */
2767 switch (_IOC_DIR(cmd)) {
2768 case _IOC_READ:
2769 case (_IOC_WRITE | _IOC_READ):
2770 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
2771 err = -EFAULT;
2772 break;
2773 }
2774
2775out:
2776 kfree(mbuf);
2777 return err;
2778}
fc0a8079
LP		 2779EXPORT_SYMBOL(video_usercopy);
2780
2781long video_ioctl2(struct file *file,
2782 unsigned int cmd, unsigned long arg)
2783{
2784 return video_usercopy(file, cmd, arg, __video_do_ioctl);
2785}
8a522c91 2786EXPORT_SYMBOL(video_ioctl2);
Linux 6.x block layer and io_uring tree(s)