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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Video capture interface for Linux version 24 *5 * A generic framework to process V4L2 ioctl commands.6 *7 * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1)8 * Mauro Carvalho Chehab <mchehab@kernel.org> (version 2)9 */10 11#include <linux/compat.h>12#include <linux/mm.h>13#include <linux/module.h>14#include <linux/slab.h>15#include <linux/types.h>16#include <linux/kernel.h>17#include <linux/version.h>18 19#include <linux/v4l2-subdev.h>20#include <linux/videodev2.h>21 22#include <media/media-device.h> /* for media_set_bus_info() */23#include <media/v4l2-common.h>24#include <media/v4l2-ioctl.h>25#include <media/v4l2-ctrls.h>26#include <media/v4l2-fh.h>27#include <media/v4l2-event.h>28#include <media/v4l2-device.h>29#include <media/videobuf2-v4l2.h>30#include <media/v4l2-mc.h>31#include <media/v4l2-mem2mem.h>32 33#include <trace/events/v4l2.h>34 35#define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls)36 37struct std_descr {38 v4l2_std_id std;39 const char *descr;40};41 42static const struct std_descr standards[] = {43 { V4L2_STD_NTSC, "NTSC" },44 { V4L2_STD_NTSC_M, "NTSC-M" },45 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" },46 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" },47 { V4L2_STD_NTSC_443, "NTSC-443" },48 { V4L2_STD_PAL, "PAL" },49 { V4L2_STD_PAL_BG, "PAL-BG" },50 { V4L2_STD_PAL_B, "PAL-B" },51 { V4L2_STD_PAL_B1, "PAL-B1" },52 { V4L2_STD_PAL_G, "PAL-G" },53 { V4L2_STD_PAL_H, "PAL-H" },54 { V4L2_STD_PAL_I, "PAL-I" },55 { V4L2_STD_PAL_DK, "PAL-DK" },56 { V4L2_STD_PAL_D, "PAL-D" },57 { V4L2_STD_PAL_D1, "PAL-D1" },58 { V4L2_STD_PAL_K, "PAL-K" },59 { V4L2_STD_PAL_M, "PAL-M" },60 { V4L2_STD_PAL_N, "PAL-N" },61 { V4L2_STD_PAL_Nc, "PAL-Nc" },62 { V4L2_STD_PAL_60, "PAL-60" },63 { V4L2_STD_SECAM, "SECAM" },64 { V4L2_STD_SECAM_B, "SECAM-B" },65 { V4L2_STD_SECAM_G, "SECAM-G" },66 { V4L2_STD_SECAM_H, "SECAM-H" },67 { V4L2_STD_SECAM_DK, "SECAM-DK" },68 { V4L2_STD_SECAM_D, "SECAM-D" },69 { V4L2_STD_SECAM_K, "SECAM-K" },70 { V4L2_STD_SECAM_K1, "SECAM-K1" },71 { V4L2_STD_SECAM_L, "SECAM-L" },72 { V4L2_STD_SECAM_LC, "SECAM-Lc" },73 { 0, "Unknown" }74};75 76/* video4linux standard ID conversion to standard name77 */78const char *v4l2_norm_to_name(v4l2_std_id id)79{80 u32 myid = id;81 int i;82 83 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle84 64 bit comparisons. So, on that architecture, with some gcc85 variants, compilation fails. Currently, the max value is 30bit wide.86 */87 BUG_ON(myid != id);88 89 for (i = 0; standards[i].std; i++)90 if (myid == standards[i].std)91 break;92 return standards[i].descr;93}94EXPORT_SYMBOL(v4l2_norm_to_name);95 96/* Returns frame period for the given standard */97void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod)98{99 if (id & V4L2_STD_525_60) {100 frameperiod->numerator = 1001;101 frameperiod->denominator = 30000;102 } else {103 frameperiod->numerator = 1;104 frameperiod->denominator = 25;105 }106}107EXPORT_SYMBOL(v4l2_video_std_frame_period);108 109/* Fill in the fields of a v4l2_standard structure according to the110 'id' and 'transmission' parameters. Returns negative on error. */111int v4l2_video_std_construct(struct v4l2_standard *vs,112 int id, const char *name)113{114 vs->id = id;115 v4l2_video_std_frame_period(id, &vs->frameperiod);116 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625;117 strscpy(vs->name, name, sizeof(vs->name));118 return 0;119}120EXPORT_SYMBOL(v4l2_video_std_construct);121 122/* Fill in the fields of a v4l2_standard structure according to the123 * 'id' and 'vs->index' parameters. Returns negative on error. */124int v4l_video_std_enumstd(struct v4l2_standard *vs, v4l2_std_id id)125{126 v4l2_std_id curr_id = 0;127 unsigned int index = vs->index, i, j = 0;128 const char *descr = "";129 130 /* Return -ENODATA if the id for the current input131 or output is 0, meaning that it doesn't support this API. */132 if (id == 0)133 return -ENODATA;134 135 /* Return norm array in a canonical way */136 for (i = 0; i <= index && id; i++) {137 /* last std value in the standards array is 0, so this138 while always ends there since (id & 0) == 0. */139 while ((id & standards[j].std) != standards[j].std)140 j++;141 curr_id = standards[j].std;142 descr = standards[j].descr;143 j++;144 if (curr_id == 0)145 break;146 if (curr_id != V4L2_STD_PAL &&147 curr_id != V4L2_STD_SECAM &&148 curr_id != V4L2_STD_NTSC)149 id &= ~curr_id;150 }151 if (i <= index)152 return -EINVAL;153 154 v4l2_video_std_construct(vs, curr_id, descr);155 return 0;156}157 158/* ----------------------------------------------------------------- */159/* some arrays for pretty-printing debug messages of enum types */160 161const char *v4l2_field_names[] = {162 [V4L2_FIELD_ANY] = "any",163 [V4L2_FIELD_NONE] = "none",164 [V4L2_FIELD_TOP] = "top",165 [V4L2_FIELD_BOTTOM] = "bottom",166 [V4L2_FIELD_INTERLACED] = "interlaced",167 [V4L2_FIELD_SEQ_TB] = "seq-tb",168 [V4L2_FIELD_SEQ_BT] = "seq-bt",169 [V4L2_FIELD_ALTERNATE] = "alternate",170 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",171 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",172};173EXPORT_SYMBOL(v4l2_field_names);174 175const char *v4l2_type_names[] = {176 [0] = "0",177 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap",178 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay",179 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out",180 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap",181 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out",182 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",183 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out",184 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay",185 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane",186 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane",187 [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap",188 [V4L2_BUF_TYPE_SDR_OUTPUT] = "sdr-out",189 [V4L2_BUF_TYPE_META_CAPTURE] = "meta-cap",190 [V4L2_BUF_TYPE_META_OUTPUT] = "meta-out",191};192EXPORT_SYMBOL(v4l2_type_names);193 194static const char *v4l2_memory_names[] = {195 [V4L2_MEMORY_MMAP] = "mmap",196 [V4L2_MEMORY_USERPTR] = "userptr",197 [V4L2_MEMORY_OVERLAY] = "overlay",198 [V4L2_MEMORY_DMABUF] = "dmabuf",199};200 201#define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown")202 203/* ------------------------------------------------------------------ */204/* debug help functions */205 206static void v4l_print_querycap(const void *arg, bool write_only)207{208 const struct v4l2_capability *p = arg;209 210 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, capabilities=0x%08x, device_caps=0x%08x\n",211 (int)sizeof(p->driver), p->driver,212 (int)sizeof(p->card), p->card,213 (int)sizeof(p->bus_info), p->bus_info,214 p->version, p->capabilities, p->device_caps);215}216 217static void v4l_print_enuminput(const void *arg, bool write_only)218{219 const struct v4l2_input *p = arg;220 221 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, std=0x%08Lx, status=0x%x, capabilities=0x%x\n",222 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,223 p->tuner, (unsigned long long)p->std, p->status,224 p->capabilities);225}226 227static void v4l_print_enumoutput(const void *arg, bool write_only)228{229 const struct v4l2_output *p = arg;230 231 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, modulator=%u, std=0x%08Lx, capabilities=0x%x\n",232 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,233 p->modulator, (unsigned long long)p->std, p->capabilities);234}235 236static void v4l_print_audio(const void *arg, bool write_only)237{238 const struct v4l2_audio *p = arg;239 240 if (write_only)241 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode);242 else243 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",244 p->index, (int)sizeof(p->name), p->name,245 p->capability, p->mode);246}247 248static void v4l_print_audioout(const void *arg, bool write_only)249{250 const struct v4l2_audioout *p = arg;251 252 if (write_only)253 pr_cont("index=%u\n", p->index);254 else255 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",256 p->index, (int)sizeof(p->name), p->name,257 p->capability, p->mode);258}259 260static void v4l_print_fmtdesc(const void *arg, bool write_only)261{262 const struct v4l2_fmtdesc *p = arg;263 264 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%p4cc, mbus_code=0x%04x, description='%.*s'\n",265 p->index, prt_names(p->type, v4l2_type_names),266 p->flags, &p->pixelformat, p->mbus_code,267 (int)sizeof(p->description), p->description);268}269 270static void v4l_print_format(const void *arg, bool write_only)271{272 const struct v4l2_format *p = arg;273 const struct v4l2_pix_format *pix;274 const struct v4l2_pix_format_mplane *mp;275 const struct v4l2_vbi_format *vbi;276 const struct v4l2_sliced_vbi_format *sliced;277 const struct v4l2_window *win;278 const struct v4l2_meta_format *meta;279 u32 pixelformat;280 u32 planes;281 unsigned i;282 283 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));284 switch (p->type) {285 case V4L2_BUF_TYPE_VIDEO_CAPTURE:286 case V4L2_BUF_TYPE_VIDEO_OUTPUT:287 pix = &p->fmt.pix;288 pr_cont(", width=%u, height=%u, pixelformat=%p4cc, field=%s, bytesperline=%u, sizeimage=%u, colorspace=%d, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",289 pix->width, pix->height, &pix->pixelformat,290 prt_names(pix->field, v4l2_field_names),291 pix->bytesperline, pix->sizeimage,292 pix->colorspace, pix->flags, pix->ycbcr_enc,293 pix->quantization, pix->xfer_func);294 break;295 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:296 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:297 mp = &p->fmt.pix_mp;298 pixelformat = mp->pixelformat;299 pr_cont(", width=%u, height=%u, format=%p4cc, field=%s, colorspace=%d, num_planes=%u, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",300 mp->width, mp->height, &pixelformat,301 prt_names(mp->field, v4l2_field_names),302 mp->colorspace, mp->num_planes, mp->flags,303 mp->ycbcr_enc, mp->quantization, mp->xfer_func);304 planes = min_t(u32, mp->num_planes, VIDEO_MAX_PLANES);305 for (i = 0; i < planes; i++)306 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i,307 mp->plane_fmt[i].bytesperline,308 mp->plane_fmt[i].sizeimage);309 break;310 case V4L2_BUF_TYPE_VIDEO_OVERLAY:311 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:312 win = &p->fmt.win;313 pr_cont(", wxh=%dx%d, x,y=%d,%d, field=%s, chromakey=0x%08x, global_alpha=0x%02x\n",314 win->w.width, win->w.height, win->w.left, win->w.top,315 prt_names(win->field, v4l2_field_names),316 win->chromakey, win->global_alpha);317 break;318 case V4L2_BUF_TYPE_VBI_CAPTURE:319 case V4L2_BUF_TYPE_VBI_OUTPUT:320 vbi = &p->fmt.vbi;321 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%p4cc, start=%u,%u, count=%u,%u\n",322 vbi->sampling_rate, vbi->offset,323 vbi->samples_per_line, &vbi->sample_format,324 vbi->start[0], vbi->start[1],325 vbi->count[0], vbi->count[1]);326 break;327 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:328 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:329 sliced = &p->fmt.sliced;330 pr_cont(", service_set=0x%08x, io_size=%d\n",331 sliced->service_set, sliced->io_size);332 for (i = 0; i < 24; i++)333 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,334 sliced->service_lines[0][i],335 sliced->service_lines[1][i]);336 break;337 case V4L2_BUF_TYPE_SDR_CAPTURE:338 case V4L2_BUF_TYPE_SDR_OUTPUT:339 pixelformat = p->fmt.sdr.pixelformat;340 pr_cont(", pixelformat=%p4cc\n", &pixelformat);341 break;342 case V4L2_BUF_TYPE_META_CAPTURE:343 case V4L2_BUF_TYPE_META_OUTPUT:344 meta = &p->fmt.meta;345 pixelformat = meta->dataformat;346 pr_cont(", dataformat=%p4cc, buffersize=%u, width=%u, height=%u, bytesperline=%u\n",347 &pixelformat, meta->buffersize, meta->width,348 meta->height, meta->bytesperline);349 break;350 }351}352 353static void v4l_print_framebuffer(const void *arg, bool write_only)354{355 const struct v4l2_framebuffer *p = arg;356 357 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, height=%u, pixelformat=%p4cc, bytesperline=%u, sizeimage=%u, colorspace=%d\n",358 p->capability, p->flags, p->base, p->fmt.width, p->fmt.height,359 &p->fmt.pixelformat, p->fmt.bytesperline, p->fmt.sizeimage,360 p->fmt.colorspace);361}362 363static void v4l_print_buftype(const void *arg, bool write_only)364{365 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names));366}367 368static void v4l_print_modulator(const void *arg, bool write_only)369{370 const struct v4l2_modulator *p = arg;371 372 if (write_only)373 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans);374 else375 pr_cont("index=%u, name=%.*s, capability=0x%x, rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",376 p->index, (int)sizeof(p->name), p->name, p->capability,377 p->rangelow, p->rangehigh, p->txsubchans);378}379 380static void v4l_print_tuner(const void *arg, bool write_only)381{382 const struct v4l2_tuner *p = arg;383 384 if (write_only)385 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode);386 else387 pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, rangelow=%u, rangehigh=%u, signal=%u, afc=%d, rxsubchans=0x%x, audmode=%u\n",388 p->index, (int)sizeof(p->name), p->name, p->type,389 p->capability, p->rangelow,390 p->rangehigh, p->signal, p->afc,391 p->rxsubchans, p->audmode);392}393 394static void v4l_print_frequency(const void *arg, bool write_only)395{396 const struct v4l2_frequency *p = arg;397 398 pr_cont("tuner=%u, type=%u, frequency=%u\n",399 p->tuner, p->type, p->frequency);400}401 402static void v4l_print_standard(const void *arg, bool write_only)403{404 const struct v4l2_standard *p = arg;405 406 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, framelines=%u\n",407 p->index,408 (unsigned long long)p->id, (int)sizeof(p->name), p->name,409 p->frameperiod.numerator,410 p->frameperiod.denominator,411 p->framelines);412}413 414static void v4l_print_std(const void *arg, bool write_only)415{416 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg);417}418 419static void v4l_print_hw_freq_seek(const void *arg, bool write_only)420{421 const struct v4l2_hw_freq_seek *p = arg;422 423 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, rangelow=%u, rangehigh=%u\n",424 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing,425 p->rangelow, p->rangehigh);426}427 428static void v4l_print_requestbuffers(const void *arg, bool write_only)429{430 const struct v4l2_requestbuffers *p = arg;431 432 pr_cont("count=%d, type=%s, memory=%s\n",433 p->count,434 prt_names(p->type, v4l2_type_names),435 prt_names(p->memory, v4l2_memory_names));436}437 438static void v4l_print_buffer(const void *arg, bool write_only)439{440 const struct v4l2_buffer *p = arg;441 const struct v4l2_timecode *tc = &p->timecode;442 const struct v4l2_plane *plane;443 int i;444 445 pr_cont("%02d:%02d:%02d.%06ld index=%d, type=%s, request_fd=%d, flags=0x%08x, field=%s, sequence=%d, memory=%s",446 (int)p->timestamp.tv_sec / 3600,447 ((int)p->timestamp.tv_sec / 60) % 60,448 ((int)p->timestamp.tv_sec % 60),449 (long)p->timestamp.tv_usec,450 p->index,451 prt_names(p->type, v4l2_type_names), p->request_fd,452 p->flags, prt_names(p->field, v4l2_field_names),453 p->sequence, prt_names(p->memory, v4l2_memory_names));454 455 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {456 pr_cont("\n");457 for (i = 0; i < p->length; ++i) {458 plane = &p->m.planes[i];459 printk(KERN_DEBUG460 "plane %d: bytesused=%d, data_offset=0x%08x, offset/userptr=0x%lx, length=%d\n",461 i, plane->bytesused, plane->data_offset,462 plane->m.userptr, plane->length);463 }464 } else {465 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n",466 p->bytesused, p->m.userptr, p->length);467 }468 469 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, flags=0x%08x, frames=%d, userbits=0x%08x\n",470 tc->hours, tc->minutes, tc->seconds,471 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);472}473 474static void v4l_print_exportbuffer(const void *arg, bool write_only)475{476 const struct v4l2_exportbuffer *p = arg;477 478 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n",479 p->fd, prt_names(p->type, v4l2_type_names),480 p->index, p->plane, p->flags);481}482 483static void v4l_print_create_buffers(const void *arg, bool write_only)484{485 const struct v4l2_create_buffers *p = arg;486 487 pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, max num buffers=%u, ",488 p->index, p->count, prt_names(p->memory, v4l2_memory_names),489 p->capabilities, p->max_num_buffers);490 v4l_print_format(&p->format, write_only);491}492 493static void v4l_print_remove_buffers(const void *arg, bool write_only)494{495 const struct v4l2_remove_buffers *p = arg;496 497 pr_cont("type=%s, index=%u, count=%u\n",498 prt_names(p->type, v4l2_type_names), p->index, p->count);499}500 501static void v4l_print_streamparm(const void *arg, bool write_only)502{503 const struct v4l2_streamparm *p = arg;504 505 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));506 507 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||508 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {509 const struct v4l2_captureparm *c = &p->parm.capture;510 511 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, extendedmode=%d, readbuffers=%d\n",512 c->capability, c->capturemode,513 c->timeperframe.numerator, c->timeperframe.denominator,514 c->extendedmode, c->readbuffers);515 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||516 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {517 const struct v4l2_outputparm *c = &p->parm.output;518 519 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, extendedmode=%d, writebuffers=%d\n",520 c->capability, c->outputmode,521 c->timeperframe.numerator, c->timeperframe.denominator,522 c->extendedmode, c->writebuffers);523 } else {524 pr_cont("\n");525 }526}527 528static void v4l_print_queryctrl(const void *arg, bool write_only)529{530 const struct v4l2_queryctrl *p = arg;531 532 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, step=%d, default=%d, flags=0x%08x\n",533 p->id, p->type, (int)sizeof(p->name), p->name,534 p->minimum, p->maximum,535 p->step, p->default_value, p->flags);536}537 538static void v4l_print_query_ext_ctrl(const void *arg, bool write_only)539{540 const struct v4l2_query_ext_ctrl *p = arg;541 542 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%lld/%lld, step=%lld, default=%lld, flags=0x%08x, elem_size=%u, elems=%u, nr_of_dims=%u, dims=%u,%u,%u,%u\n",543 p->id, p->type, (int)sizeof(p->name), p->name,544 p->minimum, p->maximum,545 p->step, p->default_value, p->flags,546 p->elem_size, p->elems, p->nr_of_dims,547 p->dims[0], p->dims[1], p->dims[2], p->dims[3]);548}549 550static void v4l_print_querymenu(const void *arg, bool write_only)551{552 const struct v4l2_querymenu *p = arg;553 554 pr_cont("id=0x%x, index=%d\n", p->id, p->index);555}556 557static void v4l_print_control(const void *arg, bool write_only)558{559 const struct v4l2_control *p = arg;560 const char *name = v4l2_ctrl_get_name(p->id);561 562 if (name)563 pr_cont("name=%s, ", name);564 pr_cont("id=0x%x, value=%d\n", p->id, p->value);565}566 567static void v4l_print_ext_controls(const void *arg, bool write_only)568{569 const struct v4l2_ext_controls *p = arg;570 int i;571 572 pr_cont("which=0x%x, count=%d, error_idx=%d, request_fd=%d",573 p->which, p->count, p->error_idx, p->request_fd);574 for (i = 0; i < p->count; i++) {575 unsigned int id = p->controls[i].id;576 const char *name = v4l2_ctrl_get_name(id);577 578 if (name)579 pr_cont(", name=%s", name);580 if (!p->controls[i].size)581 pr_cont(", id/val=0x%x/0x%x", id, p->controls[i].value);582 else583 pr_cont(", id/size=0x%x/%u", id, p->controls[i].size);584 }585 pr_cont("\n");586}587 588static void v4l_print_cropcap(const void *arg, bool write_only)589{590 const struct v4l2_cropcap *p = arg;591 592 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, defrect wxh=%dx%d, x,y=%d,%d, pixelaspect %d/%d\n",593 prt_names(p->type, v4l2_type_names),594 p->bounds.width, p->bounds.height,595 p->bounds.left, p->bounds.top,596 p->defrect.width, p->defrect.height,597 p->defrect.left, p->defrect.top,598 p->pixelaspect.numerator, p->pixelaspect.denominator);599}600 601static void v4l_print_crop(const void *arg, bool write_only)602{603 const struct v4l2_crop *p = arg;604 605 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n",606 prt_names(p->type, v4l2_type_names),607 p->c.width, p->c.height,608 p->c.left, p->c.top);609}610 611static void v4l_print_selection(const void *arg, bool write_only)612{613 const struct v4l2_selection *p = arg;614 615 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n",616 prt_names(p->type, v4l2_type_names),617 p->target, p->flags,618 p->r.width, p->r.height, p->r.left, p->r.top);619}620 621static void v4l_print_jpegcompression(const void *arg, bool write_only)622{623 const struct v4l2_jpegcompression *p = arg;624 625 pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n",626 p->quality, p->APPn, p->APP_len,627 p->COM_len, p->jpeg_markers);628}629 630static void v4l_print_enc_idx(const void *arg, bool write_only)631{632 const struct v4l2_enc_idx *p = arg;633 634 pr_cont("entries=%d, entries_cap=%d\n",635 p->entries, p->entries_cap);636}637 638static void v4l_print_encoder_cmd(const void *arg, bool write_only)639{640 const struct v4l2_encoder_cmd *p = arg;641 642 pr_cont("cmd=%d, flags=0x%x\n",643 p->cmd, p->flags);644}645 646static void v4l_print_decoder_cmd(const void *arg, bool write_only)647{648 const struct v4l2_decoder_cmd *p = arg;649 650 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags);651 652 if (p->cmd == V4L2_DEC_CMD_START)653 pr_info("speed=%d, format=%u\n",654 p->start.speed, p->start.format);655 else if (p->cmd == V4L2_DEC_CMD_STOP)656 pr_info("pts=%llu\n", p->stop.pts);657}658 659static void v4l_print_dbg_chip_info(const void *arg, bool write_only)660{661 const struct v4l2_dbg_chip_info *p = arg;662 663 pr_cont("type=%u, ", p->match.type);664 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)665 pr_cont("name=%.*s, ",666 (int)sizeof(p->match.name), p->match.name);667 else668 pr_cont("addr=%u, ", p->match.addr);669 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name);670}671 672static void v4l_print_dbg_register(const void *arg, bool write_only)673{674 const struct v4l2_dbg_register *p = arg;675 676 pr_cont("type=%u, ", p->match.type);677 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)678 pr_cont("name=%.*s, ",679 (int)sizeof(p->match.name), p->match.name);680 else681 pr_cont("addr=%u, ", p->match.addr);682 pr_cont("reg=0x%llx, val=0x%llx\n",683 p->reg, p->val);684}685 686static void v4l_print_dv_timings(const void *arg, bool write_only)687{688 const struct v4l2_dv_timings *p = arg;689 690 switch (p->type) {691 case V4L2_DV_BT_656_1120:692 pr_cont("type=bt-656/1120, interlaced=%u, pixelclock=%llu, width=%u, height=%u, polarities=0x%x, hfrontporch=%u, hsync=%u, hbackporch=%u, vfrontporch=%u, vsync=%u, vbackporch=%u, il_vfrontporch=%u, il_vsync=%u, il_vbackporch=%u, standards=0x%x, flags=0x%x\n",693 p->bt.interlaced, p->bt.pixelclock,694 p->bt.width, p->bt.height,695 p->bt.polarities, p->bt.hfrontporch,696 p->bt.hsync, p->bt.hbackporch,697 p->bt.vfrontporch, p->bt.vsync,698 p->bt.vbackporch, p->bt.il_vfrontporch,699 p->bt.il_vsync, p->bt.il_vbackporch,700 p->bt.standards, p->bt.flags);701 break;702 default:703 pr_cont("type=%d\n", p->type);704 break;705 }706}707 708static void v4l_print_enum_dv_timings(const void *arg, bool write_only)709{710 const struct v4l2_enum_dv_timings *p = arg;711 712 pr_cont("index=%u, ", p->index);713 v4l_print_dv_timings(&p->timings, write_only);714}715 716static void v4l_print_dv_timings_cap(const void *arg, bool write_only)717{718 const struct v4l2_dv_timings_cap *p = arg;719 720 switch (p->type) {721 case V4L2_DV_BT_656_1120:722 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",723 p->bt.min_width, p->bt.max_width,724 p->bt.min_height, p->bt.max_height,725 p->bt.min_pixelclock, p->bt.max_pixelclock,726 p->bt.standards, p->bt.capabilities);727 break;728 default:729 pr_cont("type=%u\n", p->type);730 break;731 }732}733 734static void v4l_print_frmsizeenum(const void *arg, bool write_only)735{736 const struct v4l2_frmsizeenum *p = arg;737 738 pr_cont("index=%u, pixelformat=%p4cc, type=%u",739 p->index, &p->pixel_format, p->type);740 switch (p->type) {741 case V4L2_FRMSIZE_TYPE_DISCRETE:742 pr_cont(", wxh=%ux%u\n",743 p->discrete.width, p->discrete.height);744 break;745 case V4L2_FRMSIZE_TYPE_STEPWISE:746 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n",747 p->stepwise.min_width,748 p->stepwise.min_height,749 p->stepwise.max_width,750 p->stepwise.max_height,751 p->stepwise.step_width,752 p->stepwise.step_height);753 break;754 case V4L2_FRMSIZE_TYPE_CONTINUOUS:755 default:756 pr_cont("\n");757 break;758 }759}760 761static void v4l_print_frmivalenum(const void *arg, bool write_only)762{763 const struct v4l2_frmivalenum *p = arg;764 765 pr_cont("index=%u, pixelformat=%p4cc, wxh=%ux%u, type=%u",766 p->index, &p->pixel_format, p->width, p->height, p->type);767 switch (p->type) {768 case V4L2_FRMIVAL_TYPE_DISCRETE:769 pr_cont(", fps=%d/%d\n",770 p->discrete.numerator,771 p->discrete.denominator);772 break;773 case V4L2_FRMIVAL_TYPE_STEPWISE:774 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n",775 p->stepwise.min.numerator,776 p->stepwise.min.denominator,777 p->stepwise.max.numerator,778 p->stepwise.max.denominator,779 p->stepwise.step.numerator,780 p->stepwise.step.denominator);781 break;782 case V4L2_FRMIVAL_TYPE_CONTINUOUS:783 default:784 pr_cont("\n");785 break;786 }787}788 789static void v4l_print_event(const void *arg, bool write_only)790{791 const struct v4l2_event *p = arg;792 const struct v4l2_event_ctrl *c;793 794 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%llu.%9.9llu\n",795 p->type, p->pending, p->sequence, p->id,796 p->timestamp.tv_sec, p->timestamp.tv_nsec);797 switch (p->type) {798 case V4L2_EVENT_VSYNC:799 printk(KERN_DEBUG "field=%s\n",800 prt_names(p->u.vsync.field, v4l2_field_names));801 break;802 case V4L2_EVENT_CTRL:803 c = &p->u.ctrl;804 printk(KERN_DEBUG "changes=0x%x, type=%u, ",805 c->changes, c->type);806 if (c->type == V4L2_CTRL_TYPE_INTEGER64)807 pr_cont("value64=%lld, ", c->value64);808 else809 pr_cont("value=%d, ", c->value);810 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n",811 c->flags, c->minimum, c->maximum,812 c->step, c->default_value);813 break;814 case V4L2_EVENT_FRAME_SYNC:815 pr_cont("frame_sequence=%u\n",816 p->u.frame_sync.frame_sequence);817 break;818 }819}820 821static void v4l_print_event_subscription(const void *arg, bool write_only)822{823 const struct v4l2_event_subscription *p = arg;824 825 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",826 p->type, p->id, p->flags);827}828 829static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only)830{831 const struct v4l2_sliced_vbi_cap *p = arg;832 int i;833 834 pr_cont("type=%s, service_set=0x%08x\n",835 prt_names(p->type, v4l2_type_names), p->service_set);836 for (i = 0; i < 24; i++)837 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,838 p->service_lines[0][i],839 p->service_lines[1][i]);840}841 842static void v4l_print_freq_band(const void *arg, bool write_only)843{844 const struct v4l2_frequency_band *p = arg;845 846 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n",847 p->tuner, p->type, p->index,848 p->capability, p->rangelow,849 p->rangehigh, p->modulation);850}851 852static void v4l_print_edid(const void *arg, bool write_only)853{854 const struct v4l2_edid *p = arg;855 856 pr_cont("pad=%u, start_block=%u, blocks=%u\n",857 p->pad, p->start_block, p->blocks);858}859 860static void v4l_print_u32(const void *arg, bool write_only)861{862 pr_cont("value=%u\n", *(const u32 *)arg);863}864 865static void v4l_print_newline(const void *arg, bool write_only)866{867 pr_cont("\n");868}869 870static void v4l_print_default(const void *arg, bool write_only)871{872 pr_cont("driver-specific ioctl\n");873}874 875static bool check_ext_ctrls(struct v4l2_ext_controls *c, unsigned long ioctl)876{877 __u32 i;878 879 /* zero the reserved fields */880 c->reserved[0] = 0;881 for (i = 0; i < c->count; i++)882 c->controls[i].reserved2[0] = 0;883 884 switch (c->which) {885 case V4L2_CID_PRIVATE_BASE:886 /*887 * V4L2_CID_PRIVATE_BASE cannot be used as control class888 * when using extended controls.889 * Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL890 * is it allowed for backwards compatibility.891 */892 if (ioctl == VIDIOC_G_CTRL || ioctl == VIDIOC_S_CTRL)893 return false;894 break;895 case V4L2_CTRL_WHICH_DEF_VAL:896 /* Default value cannot be changed */897 if (ioctl == VIDIOC_S_EXT_CTRLS ||898 ioctl == VIDIOC_TRY_EXT_CTRLS) {899 c->error_idx = c->count;900 return false;901 }902 return true;903 case V4L2_CTRL_WHICH_CUR_VAL:904 return true;905 case V4L2_CTRL_WHICH_REQUEST_VAL:906 c->error_idx = c->count;907 return false;908 }909 910 /* Check that all controls are from the same control class. */911 for (i = 0; i < c->count; i++) {912 if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) {913 c->error_idx = ioctl == VIDIOC_TRY_EXT_CTRLS ? i :914 c->count;915 return false;916 }917 }918 return true;919}920 921static int check_fmt(struct file *file, enum v4l2_buf_type type)922{923 const u32 vid_caps = V4L2_CAP_VIDEO_CAPTURE |924 V4L2_CAP_VIDEO_CAPTURE_MPLANE |925 V4L2_CAP_VIDEO_OUTPUT |926 V4L2_CAP_VIDEO_OUTPUT_MPLANE |927 V4L2_CAP_VIDEO_M2M | V4L2_CAP_VIDEO_M2M_MPLANE;928 const u32 meta_caps = V4L2_CAP_META_CAPTURE |929 V4L2_CAP_META_OUTPUT;930 struct video_device *vfd = video_devdata(file);931 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;932 bool is_vid = vfd->vfl_type == VFL_TYPE_VIDEO &&933 (vfd->device_caps & vid_caps);934 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI;935 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;936 bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH;937 bool is_meta = vfd->vfl_type == VFL_TYPE_VIDEO &&938 (vfd->device_caps & meta_caps);939 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;940 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;941 942 if (ops == NULL)943 return -EINVAL;944 945 switch (type) {946 case V4L2_BUF_TYPE_VIDEO_CAPTURE:947 if ((is_vid || is_tch) && is_rx &&948 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane))949 return 0;950 break;951 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:952 if ((is_vid || is_tch) && is_rx && ops->vidioc_g_fmt_vid_cap_mplane)953 return 0;954 break;955 case V4L2_BUF_TYPE_VIDEO_OVERLAY:956 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay)957 return 0;958 break;959 case V4L2_BUF_TYPE_VIDEO_OUTPUT:960 if (is_vid && is_tx &&961 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane))962 return 0;963 break;964 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:965 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane)966 return 0;967 break;968 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:969 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay)970 return 0;971 break;972 case V4L2_BUF_TYPE_VBI_CAPTURE:973 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap)974 return 0;975 break;976 case V4L2_BUF_TYPE_VBI_OUTPUT:977 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out)978 return 0;979 break;980 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:981 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap)982 return 0;983 break;984 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:985 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out)986 return 0;987 break;988 case V4L2_BUF_TYPE_SDR_CAPTURE:989 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap)990 return 0;991 break;992 case V4L2_BUF_TYPE_SDR_OUTPUT:993 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out)994 return 0;995 break;996 case V4L2_BUF_TYPE_META_CAPTURE:997 if (is_meta && is_rx && ops->vidioc_g_fmt_meta_cap)998 return 0;999 break;1000 case V4L2_BUF_TYPE_META_OUTPUT:1001 if (is_meta && is_tx && ops->vidioc_g_fmt_meta_out)1002 return 0;1003 break;1004 default:1005 break;1006 }1007 return -EINVAL;1008}1009 1010static void v4l_sanitize_colorspace(u32 pixelformat, u32 *colorspace,1011 u32 *encoding, u32 *quantization,1012 u32 *xfer_func)1013{1014 bool is_hsv = pixelformat == V4L2_PIX_FMT_HSV24 ||1015 pixelformat == V4L2_PIX_FMT_HSV32;1016 1017 if (!v4l2_is_colorspace_valid(*colorspace)) {1018 *colorspace = V4L2_COLORSPACE_DEFAULT;1019 *encoding = V4L2_YCBCR_ENC_DEFAULT;1020 *quantization = V4L2_QUANTIZATION_DEFAULT;1021 *xfer_func = V4L2_XFER_FUNC_DEFAULT;1022 }1023 1024 if ((!is_hsv && !v4l2_is_ycbcr_enc_valid(*encoding)) ||1025 (is_hsv && !v4l2_is_hsv_enc_valid(*encoding)))1026 *encoding = V4L2_YCBCR_ENC_DEFAULT;1027 1028 if (!v4l2_is_quant_valid(*quantization))1029 *quantization = V4L2_QUANTIZATION_DEFAULT;1030 1031 if (!v4l2_is_xfer_func_valid(*xfer_func))1032 *xfer_func = V4L2_XFER_FUNC_DEFAULT;1033}1034 1035static void v4l_sanitize_format(struct v4l2_format *fmt)1036{1037 unsigned int offset;1038 1039 /* Make sure num_planes is not bogus */1040 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ||1041 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)1042 fmt->fmt.pix_mp.num_planes = min_t(u32, fmt->fmt.pix_mp.num_planes,1043 VIDEO_MAX_PLANES);1044 1045 /*1046 * The v4l2_pix_format structure has been extended with fields that were1047 * not previously required to be set to zero by applications. The priv1048 * field, when set to a magic value, indicates that the extended fields1049 * are valid. Otherwise they will contain undefined values. To simplify1050 * the API towards drivers zero the extended fields and set the priv1051 * field to the magic value when the extended pixel format structure1052 * isn't used by applications.1053 */1054 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||1055 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {1056 if (fmt->fmt.pix.priv != V4L2_PIX_FMT_PRIV_MAGIC) {1057 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;1058 1059 offset = offsetof(struct v4l2_pix_format, priv)1060 + sizeof(fmt->fmt.pix.priv);1061 memset(((void *)&fmt->fmt.pix) + offset, 0,1062 sizeof(fmt->fmt.pix) - offset);1063 }1064 }1065 1066 /* Replace invalid colorspace values with defaults. */1067 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||1068 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {1069 v4l_sanitize_colorspace(fmt->fmt.pix.pixelformat,1070 &fmt->fmt.pix.colorspace,1071 &fmt->fmt.pix.ycbcr_enc,1072 &fmt->fmt.pix.quantization,1073 &fmt->fmt.pix.xfer_func);1074 } else if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ||1075 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {1076 u32 ycbcr_enc = fmt->fmt.pix_mp.ycbcr_enc;1077 u32 quantization = fmt->fmt.pix_mp.quantization;1078 u32 xfer_func = fmt->fmt.pix_mp.xfer_func;1079 1080 v4l_sanitize_colorspace(fmt->fmt.pix_mp.pixelformat,1081 &fmt->fmt.pix_mp.colorspace, &ycbcr_enc,1082 &quantization, &xfer_func);1083 1084 fmt->fmt.pix_mp.ycbcr_enc = ycbcr_enc;1085 fmt->fmt.pix_mp.quantization = quantization;1086 fmt->fmt.pix_mp.xfer_func = xfer_func;1087 }1088}1089 1090static int v4l_querycap(const struct v4l2_ioctl_ops *ops,1091 struct file *file, void *fh, void *arg)1092{1093 struct v4l2_capability *cap = (struct v4l2_capability *)arg;1094 struct video_device *vfd = video_devdata(file);1095 int ret;1096 1097 cap->version = LINUX_VERSION_CODE;1098 cap->device_caps = vfd->device_caps;1099 cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS;1100 1101 media_set_bus_info(cap->bus_info, sizeof(cap->bus_info),1102 vfd->dev_parent);1103 1104 ret = ops->vidioc_querycap(file, fh, cap);1105 1106 /*1107 * Drivers must not change device_caps, so check for this and1108 * warn if this happened.1109 */1110 WARN_ON(cap->device_caps != vfd->device_caps);1111 /*1112 * Check that capabilities is a superset of1113 * vfd->device_caps | V4L2_CAP_DEVICE_CAPS1114 */1115 WARN_ON((cap->capabilities &1116 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)) !=1117 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS));1118 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT;1119 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT;1120 1121 return ret;1122}1123 1124static int v4l_g_input(const struct v4l2_ioctl_ops *ops,1125 struct file *file, void *fh, void *arg)1126{1127 struct video_device *vfd = video_devdata(file);1128 1129 if (vfd->device_caps & V4L2_CAP_IO_MC) {1130 *(int *)arg = 0;1131 return 0;1132 }1133 1134 return ops->vidioc_g_input(file, fh, arg);1135}1136 1137static int v4l_g_output(const struct v4l2_ioctl_ops *ops,1138 struct file *file, void *fh, void *arg)1139{1140 struct video_device *vfd = video_devdata(file);1141 1142 if (vfd->device_caps & V4L2_CAP_IO_MC) {1143 *(int *)arg = 0;1144 return 0;1145 }1146 1147 return ops->vidioc_g_output(file, fh, arg);1148}1149 1150static int v4l_s_input(const struct v4l2_ioctl_ops *ops,1151 struct file *file, void *fh, void *arg)1152{1153 struct video_device *vfd = video_devdata(file);1154 int ret;1155 1156 ret = v4l_enable_media_source(vfd);1157 if (ret)1158 return ret;1159 1160 if (vfd->device_caps & V4L2_CAP_IO_MC)1161 return *(int *)arg ? -EINVAL : 0;1162 1163 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg);1164}1165 1166static int v4l_s_output(const struct v4l2_ioctl_ops *ops,1167 struct file *file, void *fh, void *arg)1168{1169 struct video_device *vfd = video_devdata(file);1170 1171 if (vfd->device_caps & V4L2_CAP_IO_MC)1172 return *(int *)arg ? -EINVAL : 0;1173 1174 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg);1175}1176 1177static int v4l_g_priority(const struct v4l2_ioctl_ops *ops,1178 struct file *file, void *fh, void *arg)1179{1180 struct video_device *vfd;1181 u32 *p = arg;1182 1183 vfd = video_devdata(file);1184 *p = v4l2_prio_max(vfd->prio);1185 return 0;1186}1187 1188static int v4l_s_priority(const struct v4l2_ioctl_ops *ops,1189 struct file *file, void *fh, void *arg)1190{1191 struct video_device *vfd;1192 struct v4l2_fh *vfh;1193 u32 *p = arg;1194 1195 vfd = video_devdata(file);1196 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))1197 return -ENOTTY;1198 vfh = file->private_data;1199 return v4l2_prio_change(vfd->prio, &vfh->prio, *p);1200}1201 1202static int v4l_enuminput(const struct v4l2_ioctl_ops *ops,1203 struct file *file, void *fh, void *arg)1204{1205 struct video_device *vfd = video_devdata(file);1206 struct v4l2_input *p = arg;1207 1208 /*1209 * We set the flags for CAP_DV_TIMINGS &1210 * CAP_STD here based on ioctl handler provided by the1211 * driver. If the driver doesn't support these1212 * for a specific input, it must override these flags.1213 */1214 if (is_valid_ioctl(vfd, VIDIOC_S_STD))1215 p->capabilities |= V4L2_IN_CAP_STD;1216 1217 if (vfd->device_caps & V4L2_CAP_IO_MC) {1218 if (p->index)1219 return -EINVAL;1220 strscpy(p->name, vfd->name, sizeof(p->name));1221 p->type = V4L2_INPUT_TYPE_CAMERA;1222 return 0;1223 }1224 1225 return ops->vidioc_enum_input(file, fh, p);1226}1227 1228static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops,1229 struct file *file, void *fh, void *arg)1230{1231 struct video_device *vfd = video_devdata(file);1232 struct v4l2_output *p = arg;1233 1234 /*1235 * We set the flags for CAP_DV_TIMINGS &1236 * CAP_STD here based on ioctl handler provided by the1237 * driver. If the driver doesn't support these1238 * for a specific output, it must override these flags.1239 */1240 if (is_valid_ioctl(vfd, VIDIOC_S_STD))1241 p->capabilities |= V4L2_OUT_CAP_STD;1242 1243 if (vfd->device_caps & V4L2_CAP_IO_MC) {1244 if (p->index)1245 return -EINVAL;1246 strscpy(p->name, vfd->name, sizeof(p->name));1247 p->type = V4L2_OUTPUT_TYPE_ANALOG;1248 return 0;1249 }1250 1251 return ops->vidioc_enum_output(file, fh, p);1252}1253 1254static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)1255{1256 const unsigned sz = sizeof(fmt->description);1257 const char *descr = NULL;1258 u32 flags = 0;1259 1260 /*1261 * We depart from the normal coding style here since the descriptions1262 * should be aligned so it is easy to see which descriptions will be1263 * longer than 31 characters (the max length for a description).1264 * And frankly, this is easier to read anyway.1265 *1266 * Note that gcc will use O(log N) comparisons to find the right case.1267 */1268 switch (fmt->pixelformat) {1269 /* Max description length mask: descr = "0123456789012345678901234567890" */1270 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break;1271 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break;1272 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break;1273 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break;1274 case V4L2_PIX_FMT_RGBA444: descr = "16-bit RGBA 4-4-4-4"; break;1275 case V4L2_PIX_FMT_RGBX444: descr = "16-bit RGBX 4-4-4-4"; break;1276 case V4L2_PIX_FMT_ABGR444: descr = "16-bit ABGR 4-4-4-4"; break;1277 case V4L2_PIX_FMT_XBGR444: descr = "16-bit XBGR 4-4-4-4"; break;1278 case V4L2_PIX_FMT_BGRA444: descr = "16-bit BGRA 4-4-4-4"; break;1279 case V4L2_PIX_FMT_BGRX444: descr = "16-bit BGRX 4-4-4-4"; break;1280 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break;1281 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break;1282 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break;1283 case V4L2_PIX_FMT_ABGR555: descr = "16-bit ABGR 1-5-5-5"; break;1284 case V4L2_PIX_FMT_XBGR555: descr = "16-bit XBGR 1-5-5-5"; break;1285 case V4L2_PIX_FMT_RGBA555: descr = "16-bit RGBA 5-5-5-1"; break;1286 case V4L2_PIX_FMT_RGBX555: descr = "16-bit RGBX 5-5-5-1"; break;1287 case V4L2_PIX_FMT_BGRA555: descr = "16-bit BGRA 5-5-5-1"; break;1288 case V4L2_PIX_FMT_BGRX555: descr = "16-bit BGRX 5-5-5-1"; break;1289 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break;1290 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break;1291 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break;1292 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break;1293 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break;1294 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break;1295 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break;1296 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break;1297 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break;1298 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break;1299 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break;1300 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break;1301 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break;1302 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break;1303 case V4L2_PIX_FMT_BGRA32: descr = "32-bit ABGR 8-8-8-8"; break;1304 case V4L2_PIX_FMT_BGRX32: descr = "32-bit XBGR 8-8-8-8"; break;1305 case V4L2_PIX_FMT_RGBA32: descr = "32-bit RGBA 8-8-8-8"; break;1306 case V4L2_PIX_FMT_RGBX32: descr = "32-bit RGBX 8-8-8-8"; break;1307 case V4L2_PIX_FMT_RGBX1010102: descr = "32-bit RGBX 10-10-10-2"; break;1308 case V4L2_PIX_FMT_RGBA1010102: descr = "32-bit RGBA 10-10-10-2"; break;1309 case V4L2_PIX_FMT_ARGB2101010: descr = "32-bit ARGB 2-10-10-10"; break;1310 case V4L2_PIX_FMT_BGR48: descr = "48-bit BGR 16-16-16"; break;1311 case V4L2_PIX_FMT_RGB48: descr = "48-bit RGB 16-16-16"; break;1312 case V4L2_PIX_FMT_BGR48_12: descr = "12-bit Depth BGR"; break;1313 case V4L2_PIX_FMT_ABGR64_12: descr = "12-bit Depth BGRA"; break;1314 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break;1315 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break;1316 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break;1317 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break;1318 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break;1319 case V4L2_PIX_FMT_Y012: descr = "12-bit Greyscale (bits 15-4)"; break;1320 case V4L2_PIX_FMT_Y14: descr = "14-bit Greyscale"; break;1321 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break;1322 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break;1323 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break;1324 case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break;1325 case V4L2_PIX_FMT_IPU3_Y10: descr = "10-bit greyscale (IPU3 Packed)"; break;1326 case V4L2_PIX_FMT_Y12P: descr = "12-bit Greyscale (MIPI Packed)"; break;1327 case V4L2_PIX_FMT_Y14P: descr = "14-bit Greyscale (MIPI Packed)"; break;1328 case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break;1329 case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break;1330 case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break;1331 case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break;1332 case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break;1333 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break;1334 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break;1335 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break;1336 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break;1337 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break;1338 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break;1339 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break;1340 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break;1341 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break;1342 case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break;1343 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break;1344 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break;1345 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break;1346 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break;1347 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break;1348 case V4L2_PIX_FMT_YUV24: descr = "24-bit YUV 4:4:4 8-8-8"; break;1349 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break;1350 case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break;1351 case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break;1352 case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break;1353 case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break;1354 case V4L2_PIX_FMT_YUVA32: descr = "32-bit YUVA 8-8-8-8"; break;1355 case V4L2_PIX_FMT_YUVX32: descr = "32-bit YUVX 8-8-8-8"; break;1356 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break;1357 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break;1358 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break;1359 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break;1360 case V4L2_PIX_FMT_YUV48_12: descr = "12-bit YUV 4:4:4 Packed"; break;1361 case V4L2_PIX_FMT_NV12: descr = "Y/UV 4:2:0"; break;1362 case V4L2_PIX_FMT_NV21: descr = "Y/VU 4:2:0"; break;1363 case V4L2_PIX_FMT_NV16: descr = "Y/UV 4:2:2"; break;1364 case V4L2_PIX_FMT_NV61: descr = "Y/VU 4:2:2"; break;1365 case V4L2_PIX_FMT_NV24: descr = "Y/UV 4:4:4"; break;1366 case V4L2_PIX_FMT_NV42: descr = "Y/VU 4:4:4"; break;1367 case V4L2_PIX_FMT_P010: descr = "10-bit Y/UV 4:2:0"; break;1368 case V4L2_PIX_FMT_P012: descr = "12-bit Y/UV 4:2:0"; break;1369 case V4L2_PIX_FMT_NV12_4L4: descr = "Y/UV 4:2:0 (4x4 Linear)"; break;1370 case V4L2_PIX_FMT_NV12_16L16: descr = "Y/UV 4:2:0 (16x16 Linear)"; break;1371 case V4L2_PIX_FMT_NV12_32L32: descr = "Y/UV 4:2:0 (32x32 Linear)"; break;1372 case V4L2_PIX_FMT_NV15_4L4: descr = "10-bit Y/UV 4:2:0 (4x4 Linear)"; break;1373 case V4L2_PIX_FMT_P010_4L4: descr = "10-bit Y/UV 4:2:0 (4x4 Linear)"; break;1374 case V4L2_PIX_FMT_NV12M: descr = "Y/UV 4:2:0 (N-C)"; break;1375 case V4L2_PIX_FMT_NV21M: descr = "Y/VU 4:2:0 (N-C)"; break;1376 case V4L2_PIX_FMT_NV16M: descr = "Y/UV 4:2:2 (N-C)"; break;1377 case V4L2_PIX_FMT_NV61M: descr = "Y/VU 4:2:2 (N-C)"; break;1378 case V4L2_PIX_FMT_NV12MT: descr = "Y/UV 4:2:0 (64x32 MB, N-C)"; break;1379 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/UV 4:2:0 (16x16 MB, N-C)"; break;1380 case V4L2_PIX_FMT_P012M: descr = "12-bit Y/UV 4:2:0 (N-C)"; break;1381 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break;1382 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break;1383 case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break;1384 case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break;1385 case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break;1386 case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break;1387 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break;1388 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break;1389 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break;1390 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break;1391 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break;1392 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break;1393 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break;1394 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break;1395 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break;1396 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break;1397 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break;1398 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break;1399 case V4L2_PIX_FMT_IPU3_SBGGR10: descr = "10-bit bayer BGGR IPU3 Packed"; break;1400 case V4L2_PIX_FMT_IPU3_SGBRG10: descr = "10-bit bayer GBRG IPU3 Packed"; break;1401 case V4L2_PIX_FMT_IPU3_SGRBG10: descr = "10-bit bayer GRBG IPU3 Packed"; break;1402 case V4L2_PIX_FMT_IPU3_SRGGB10: descr = "10-bit bayer RGGB IPU3 Packed"; break;1403 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break;1404 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break;1405 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break;1406 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break;1407 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break;1408 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break;1409 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break;1410 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break;1411 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break;1412 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break;1413 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break;1414 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break;1415 case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break;1416 case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break;1417 case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break;1418 case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break;1419 case V4L2_PIX_FMT_SBGGR14: descr = "14-bit Bayer BGBG/GRGR"; break;1420 case V4L2_PIX_FMT_SGBRG14: descr = "14-bit Bayer GBGB/RGRG"; break;1421 case V4L2_PIX_FMT_SGRBG14: descr = "14-bit Bayer GRGR/BGBG"; break;1422 case V4L2_PIX_FMT_SRGGB14: descr = "14-bit Bayer RGRG/GBGB"; break;1423 case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break;1424 case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break;1425 case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break;1426 case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break;1427 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break;1428 case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break;1429 case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break;1430 case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break;1431 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break;1432 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break;1433 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break;1434 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break;1435 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break;1436 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break;1437 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break;1438 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break;1439 case V4L2_PIX_FMT_MM21: descr = "Mediatek 8-bit Block Format"; break;1440 case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break;1441 case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break;1442 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break;1443 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break;1444 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break;1445 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break;1446 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break;1447 case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break;1448 case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break;1449 case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break;1450 case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit Signed Deltas"; break;1451 case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit Signed Deltas"; break;1452 case V4L2_TCH_FMT_TU16: descr = "16-bit Unsigned Touch Data"; break;1453 case V4L2_TCH_FMT_TU08: descr = "8-bit Unsigned Touch Data"; break;1454 case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break;1455 case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break;1456 case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break;1457 case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break;1458 case V4L2_META_FMT_VIVID: descr = "Vivid Metadata"; break;1459 case V4L2_META_FMT_RK_ISP1_PARAMS: descr = "Rockchip ISP1 3A Parameters"; break;1460 case V4L2_META_FMT_RK_ISP1_STAT_3A: descr = "Rockchip ISP1 3A Statistics"; break;1461 case V4L2_META_FMT_RK_ISP1_EXT_PARAMS: descr = "Rockchip ISP1 Ext 3A Params"; break;1462 case V4L2_PIX_FMT_NV12_8L128: descr = "NV12 (8x128 Linear)"; break;1463 case V4L2_PIX_FMT_NV12M_8L128: descr = "NV12M (8x128 Linear)"; break;1464 case V4L2_PIX_FMT_NV12_10BE_8L128: descr = "10-bit NV12 (8x128 Linear, BE)"; break;1465 case V4L2_PIX_FMT_NV12M_10BE_8L128: descr = "10-bit NV12M (8x128 Linear, BE)"; break;1466 case V4L2_PIX_FMT_Y210: descr = "10-bit YUYV Packed"; break;1467 case V4L2_PIX_FMT_Y212: descr = "12-bit YUYV Packed"; break;1468 case V4L2_PIX_FMT_Y216: descr = "16-bit YUYV Packed"; break;1469 case V4L2_META_FMT_RPI_BE_CFG: descr = "RPi PiSP BE Config format"; break;1470 case V4L2_META_FMT_GENERIC_8: descr = "8-bit Generic Metadata"; break;1471 case V4L2_META_FMT_GENERIC_CSI2_10: descr = "8-bit Generic Meta, 10b CSI-2"; break;1472 case V4L2_META_FMT_GENERIC_CSI2_12: descr = "8-bit Generic Meta, 12b CSI-2"; break;1473 case V4L2_META_FMT_GENERIC_CSI2_14: descr = "8-bit Generic Meta, 14b CSI-2"; break;1474 case V4L2_META_FMT_GENERIC_CSI2_16: descr = "8-bit Generic Meta, 16b CSI-2"; break;1475 case V4L2_META_FMT_GENERIC_CSI2_20: descr = "8-bit Generic Meta, 20b CSI-2"; break;1476 case V4L2_META_FMT_GENERIC_CSI2_24: descr = "8-bit Generic Meta, 24b CSI-2"; break;1477 1478 default:1479 /* Compressed formats */1480 flags = V4L2_FMT_FLAG_COMPRESSED;1481 switch (fmt->pixelformat) {1482 /* Max description length mask: descr = "0123456789012345678901234567890" */1483 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break;1484 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break;1485 case V4L2_PIX_FMT_DV: descr = "1394"; break;1486 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break;1487 case V4L2_PIX_FMT_H264: descr = "H.264"; break;1488 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break;1489 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break;1490 case V4L2_PIX_FMT_H264_SLICE: descr = "H.264 Parsed Slice Data"; break;1491 case V4L2_PIX_FMT_H263: descr = "H.263"; break;1492 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break;1493 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break;1494 case V4L2_PIX_FMT_MPEG2_SLICE: descr = "MPEG-2 Parsed Slice Data"; break;1495 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 Part 2 ES"; break;1496 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break;1497 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break;1498 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break;1499 case V4L2_PIX_FMT_VP8: descr = "VP8"; break;1500 case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break;1501 case V4L2_PIX_FMT_VP9: descr = "VP9"; break;1502 case V4L2_PIX_FMT_VP9_FRAME: descr = "VP9 Frame"; break;1503 case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */1504 case V4L2_PIX_FMT_HEVC_SLICE: descr = "HEVC Parsed Slice Data"; break;1505 case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */1506 case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */1507 case V4L2_PIX_FMT_SPK: descr = "Sorenson Spark"; break;1508 case V4L2_PIX_FMT_RV30: descr = "RealVideo 8"; break;1509 case V4L2_PIX_FMT_RV40: descr = "RealVideo 9 & 10"; break;1510 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break;1511 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break;1512 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break;1513 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break;1514 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break;1515 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break;1516 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break;1517 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break;1518 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break;1519 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break;1520 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break;1521 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break;1522 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break;1523 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break;1524 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break;1525 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break;1526 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break;1527 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break;1528 case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break;1529 case V4L2_PIX_FMT_QC08C: descr = "QCOM Compressed 8-bit Format"; break;1530 case V4L2_PIX_FMT_QC10C: descr = "QCOM Compressed 10-bit Format"; break;1531 case V4L2_PIX_FMT_AJPG: descr = "Aspeed JPEG"; break;1532 case V4L2_PIX_FMT_AV1_FRAME: descr = "AV1 Frame"; break;1533 case V4L2_PIX_FMT_MT2110T: descr = "Mediatek 10bit Tile Mode"; break;1534 case V4L2_PIX_FMT_MT2110R: descr = "Mediatek 10bit Raster Mode"; break;1535 case V4L2_PIX_FMT_HEXTILE: descr = "Hextile Compressed Format"; break;1536 case V4L2_PIX_FMT_PISP_COMP1_RGGB: descr = "PiSP 8b RGRG/GBGB mode1 compr"; break;1537 case V4L2_PIX_FMT_PISP_COMP1_GRBG: descr = "PiSP 8b GRGR/BGBG mode1 compr"; break;1538 case V4L2_PIX_FMT_PISP_COMP1_GBRG: descr = "PiSP 8b GBGB/RGRG mode1 compr"; break;1539 case V4L2_PIX_FMT_PISP_COMP1_BGGR: descr = "PiSP 8b BGBG/GRGR mode1 compr"; break;1540 case V4L2_PIX_FMT_PISP_COMP1_MONO: descr = "PiSP 8b monochrome mode1 compr"; break;1541 case V4L2_PIX_FMT_PISP_COMP2_RGGB: descr = "PiSP 8b RGRG/GBGB mode2 compr"; break;1542 case V4L2_PIX_FMT_PISP_COMP2_GRBG: descr = "PiSP 8b GRGR/BGBG mode2 compr"; break;1543 case V4L2_PIX_FMT_PISP_COMP2_GBRG: descr = "PiSP 8b GBGB/RGRG mode2 compr"; break;1544 case V4L2_PIX_FMT_PISP_COMP2_BGGR: descr = "PiSP 8b BGBG/GRGR mode2 compr"; break;1545 case V4L2_PIX_FMT_PISP_COMP2_MONO: descr = "PiSP 8b monochrome mode2 compr"; break;1546 default:1547 if (fmt->description[0])1548 return;1549 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat);1550 flags = 0;1551 snprintf(fmt->description, sz, "%p4cc",1552 &fmt->pixelformat);1553 break;1554 }1555 }1556 1557 if (fmt->type == V4L2_BUF_TYPE_META_CAPTURE) {1558 switch (fmt->pixelformat) {1559 case V4L2_META_FMT_GENERIC_8:1560 case V4L2_META_FMT_GENERIC_CSI2_10:1561 case V4L2_META_FMT_GENERIC_CSI2_12:1562 case V4L2_META_FMT_GENERIC_CSI2_14:1563 case V4L2_META_FMT_GENERIC_CSI2_16:1564 case V4L2_META_FMT_GENERIC_CSI2_20:1565 case V4L2_META_FMT_GENERIC_CSI2_24:1566 fmt->flags |= V4L2_FMT_FLAG_META_LINE_BASED;1567 break;1568 default:1569 fmt->flags &= ~V4L2_FMT_FLAG_META_LINE_BASED;1570 }1571 }1572 1573 if (descr)1574 WARN_ON(strscpy(fmt->description, descr, sz) < 0);1575 fmt->flags |= flags;1576}1577 1578static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,1579 struct file *file, void *fh, void *arg)1580{1581 struct video_device *vdev = video_devdata(file);1582 struct v4l2_fmtdesc *p = arg;1583 int ret = check_fmt(file, p->type);1584 u32 mbus_code;1585 u32 cap_mask;1586 1587 if (ret)1588 return ret;1589 ret = -EINVAL;1590 1591 if (!(vdev->device_caps & V4L2_CAP_IO_MC))1592 p->mbus_code = 0;1593 1594 mbus_code = p->mbus_code;1595 memset_after(p, 0, type);1596 p->mbus_code = mbus_code;1597 1598 switch (p->type) {1599 case V4L2_BUF_TYPE_VIDEO_CAPTURE:1600 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:1601 cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE |1602 V4L2_CAP_VIDEO_M2M_MPLANE;1603 if (!!(vdev->device_caps & cap_mask) !=1604 (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE))1605 break;1606 1607 if (unlikely(!ops->vidioc_enum_fmt_vid_cap))1608 break;1609 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg);1610 break;1611 case V4L2_BUF_TYPE_VIDEO_OVERLAY:1612 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay))1613 break;1614 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);1615 break;1616 case V4L2_BUF_TYPE_VIDEO_OUTPUT:1617 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:1618 cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE |1619 V4L2_CAP_VIDEO_M2M_MPLANE;1620 if (!!(vdev->device_caps & cap_mask) !=1621 (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE))1622 break;1623 1624 if (unlikely(!ops->vidioc_enum_fmt_vid_out))1625 break;1626 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg);1627 break;1628 case V4L2_BUF_TYPE_SDR_CAPTURE:1629 if (unlikely(!ops->vidioc_enum_fmt_sdr_cap))1630 break;1631 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg);1632 break;1633 case V4L2_BUF_TYPE_SDR_OUTPUT:1634 if (unlikely(!ops->vidioc_enum_fmt_sdr_out))1635 break;1636 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg);1637 break;1638 case V4L2_BUF_TYPE_META_CAPTURE:1639 if (unlikely(!ops->vidioc_enum_fmt_meta_cap))1640 break;1641 ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg);1642 break;1643 case V4L2_BUF_TYPE_META_OUTPUT:1644 if (unlikely(!ops->vidioc_enum_fmt_meta_out))1645 break;1646 ret = ops->vidioc_enum_fmt_meta_out(file, fh, arg);1647 break;1648 }1649 if (ret == 0)1650 v4l_fill_fmtdesc(p);1651 return ret;1652}1653 1654static void v4l_pix_format_touch(struct v4l2_pix_format *p)1655{1656 /*1657 * The v4l2_pix_format structure contains fields that make no sense for1658 * touch. Set them to default values in this case.1659 */1660 1661 p->field = V4L2_FIELD_NONE;1662 p->colorspace = V4L2_COLORSPACE_RAW;1663 p->flags = 0;1664 p->ycbcr_enc = 0;1665 p->quantization = 0;1666 p->xfer_func = 0;1667}1668 1669static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,1670 struct file *file, void *fh, void *arg)1671{1672 struct v4l2_format *p = arg;1673 struct video_device *vfd = video_devdata(file);1674 int ret = check_fmt(file, p->type);1675 1676 if (ret)1677 return ret;1678 1679 memset(&p->fmt, 0, sizeof(p->fmt));1680 1681 switch (p->type) {1682 case V4L2_BUF_TYPE_VIDEO_CAPTURE:1683 if (unlikely(!ops->vidioc_g_fmt_vid_cap))1684 break;1685 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;1686 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg);1687 /* just in case the driver zeroed it again */1688 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;1689 if (vfd->vfl_type == VFL_TYPE_TOUCH)1690 v4l_pix_format_touch(&p->fmt.pix);1691 return ret;1692 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:1693 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);1694 case V4L2_BUF_TYPE_VIDEO_OVERLAY:1695 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);1696 case V4L2_BUF_TYPE_VBI_CAPTURE:1697 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);1698 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:1699 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);1700 case V4L2_BUF_TYPE_VIDEO_OUTPUT:1701 if (unlikely(!ops->vidioc_g_fmt_vid_out))1702 break;1703 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;1704 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg);1705 /* just in case the driver zeroed it again */1706 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;1707 return ret;1708 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:1709 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);1710 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:1711 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);1712 case V4L2_BUF_TYPE_VBI_OUTPUT:1713 return ops->vidioc_g_fmt_vbi_out(file, fh, arg);1714 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:1715 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);1716 case V4L2_BUF_TYPE_SDR_CAPTURE:1717 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg);1718 case V4L2_BUF_TYPE_SDR_OUTPUT:1719 return ops->vidioc_g_fmt_sdr_out(file, fh, arg);1720 case V4L2_BUF_TYPE_META_CAPTURE:1721 return ops->vidioc_g_fmt_meta_cap(file, fh, arg);1722 case V4L2_BUF_TYPE_META_OUTPUT:1723 return ops->vidioc_g_fmt_meta_out(file, fh, arg);1724 }1725 return -EINVAL;1726}1727 1728static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,1729 struct file *file, void *fh, void *arg)1730{1731 struct v4l2_format *p = arg;1732 struct video_device *vfd = video_devdata(file);1733 int ret = check_fmt(file, p->type);1734 unsigned int i;1735 1736 if (ret)1737 return ret;1738 1739 ret = v4l_enable_media_source(vfd);1740 if (ret)1741 return ret;1742 v4l_sanitize_format(p);1743 1744 switch (p->type) {1745 case V4L2_BUF_TYPE_VIDEO_CAPTURE:1746 if (unlikely(!ops->vidioc_s_fmt_vid_cap))1747 break;1748 memset_after(p, 0, fmt.pix);1749 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg);1750 /* just in case the driver zeroed it again */1751 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;1752 if (vfd->vfl_type == VFL_TYPE_TOUCH)1753 v4l_pix_format_touch(&p->fmt.pix);1754 return ret;1755 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:1756 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane))1757 break;1758 memset_after(p, 0, fmt.pix_mp.xfer_func);1759 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)1760 memset_after(&p->fmt.pix_mp.plane_fmt[i],1761 0, bytesperline);1762 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);1763 case V4L2_BUF_TYPE_VIDEO_OVERLAY:1764 if (unlikely(!ops->vidioc_s_fmt_vid_overlay))1765 break;1766 memset_after(p, 0, fmt.win);1767 p->fmt.win.clips = NULL;1768 p->fmt.win.clipcount = 0;1769 p->fmt.win.bitmap = NULL;1770 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);1771 case V4L2_BUF_TYPE_VBI_CAPTURE:1772 if (unlikely(!ops->vidioc_s_fmt_vbi_cap))1773 break;1774 memset_after(p, 0, fmt.vbi.flags);1775 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);1776 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:1777 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap))1778 break;1779 memset_after(p, 0, fmt.sliced.io_size);1780 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);1781 case V4L2_BUF_TYPE_VIDEO_OUTPUT:1782 if (unlikely(!ops->vidioc_s_fmt_vid_out))1783 break;1784 memset_after(p, 0, fmt.pix);1785 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg);1786 /* just in case the driver zeroed it again */1787 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;1788 return ret;1789 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:1790 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane))1791 break;1792 memset_after(p, 0, fmt.pix_mp.xfer_func);1793 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)1794 memset_after(&p->fmt.pix_mp.plane_fmt[i],1795 0, bytesperline);1796 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);1797 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:1798 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay))1799 break;1800 memset_after(p, 0, fmt.win);1801 p->fmt.win.clips = NULL;1802 p->fmt.win.clipcount = 0;1803 p->fmt.win.bitmap = NULL;1804 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);1805 case V4L2_BUF_TYPE_VBI_OUTPUT:1806 if (unlikely(!ops->vidioc_s_fmt_vbi_out))1807 break;1808 memset_after(p, 0, fmt.vbi.flags);1809 return ops->vidioc_s_fmt_vbi_out(file, fh, arg);1810 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:1811 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out))1812 break;1813 memset_after(p, 0, fmt.sliced.io_size);1814 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);1815 case V4L2_BUF_TYPE_SDR_CAPTURE:1816 if (unlikely(!ops->vidioc_s_fmt_sdr_cap))1817 break;1818 memset_after(p, 0, fmt.sdr.buffersize);1819 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg);1820 case V4L2_BUF_TYPE_SDR_OUTPUT:1821 if (unlikely(!ops->vidioc_s_fmt_sdr_out))1822 break;1823 memset_after(p, 0, fmt.sdr.buffersize);1824 return ops->vidioc_s_fmt_sdr_out(file, fh, arg);1825 case V4L2_BUF_TYPE_META_CAPTURE:1826 if (unlikely(!ops->vidioc_s_fmt_meta_cap))1827 break;1828 memset_after(p, 0, fmt.meta);1829 return ops->vidioc_s_fmt_meta_cap(file, fh, arg);1830 case V4L2_BUF_TYPE_META_OUTPUT:1831 if (unlikely(!ops->vidioc_s_fmt_meta_out))1832 break;1833 memset_after(p, 0, fmt.meta);1834 return ops->vidioc_s_fmt_meta_out(file, fh, arg);1835 }1836 return -EINVAL;1837}1838 1839static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,1840 struct file *file, void *fh, void *arg)1841{1842 struct v4l2_format *p = arg;1843 struct video_device *vfd = video_devdata(file);1844 int ret = check_fmt(file, p->type);1845 unsigned int i;1846 1847 if (ret)1848 return ret;1849 1850 v4l_sanitize_format(p);1851 1852 switch (p->type) {1853 case V4L2_BUF_TYPE_VIDEO_CAPTURE:1854 if (unlikely(!ops->vidioc_try_fmt_vid_cap))1855 break;1856 memset_after(p, 0, fmt.pix);1857 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg);1858 /* just in case the driver zeroed it again */1859 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;1860 if (vfd->vfl_type == VFL_TYPE_TOUCH)1861 v4l_pix_format_touch(&p->fmt.pix);1862 return ret;1863 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:1864 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane))1865 break;1866 memset_after(p, 0, fmt.pix_mp.xfer_func);1867 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)1868 memset_after(&p->fmt.pix_mp.plane_fmt[i],1869 0, bytesperline);1870 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);1871 case V4L2_BUF_TYPE_VIDEO_OVERLAY:1872 if (unlikely(!ops->vidioc_try_fmt_vid_overlay))1873 break;1874 memset_after(p, 0, fmt.win);1875 p->fmt.win.clips = NULL;1876 p->fmt.win.clipcount = 0;1877 p->fmt.win.bitmap = NULL;1878 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);1879 case V4L2_BUF_TYPE_VBI_CAPTURE:1880 if (unlikely(!ops->vidioc_try_fmt_vbi_cap))1881 break;1882 memset_after(p, 0, fmt.vbi.flags);1883 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);1884 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:1885 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap))1886 break;1887 memset_after(p, 0, fmt.sliced.io_size);1888 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);1889 case V4L2_BUF_TYPE_VIDEO_OUTPUT:1890 if (unlikely(!ops->vidioc_try_fmt_vid_out))1891 break;1892 memset_after(p, 0, fmt.pix);1893 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg);1894 /* just in case the driver zeroed it again */1895 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;1896 return ret;1897 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:1898 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane))1899 break;1900 memset_after(p, 0, fmt.pix_mp.xfer_func);1901 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)1902 memset_after(&p->fmt.pix_mp.plane_fmt[i],1903 0, bytesperline);1904 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);1905 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:1906 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay))1907 break;1908 memset_after(p, 0, fmt.win);1909 p->fmt.win.clips = NULL;1910 p->fmt.win.clipcount = 0;1911 p->fmt.win.bitmap = NULL;1912 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);1913 case V4L2_BUF_TYPE_VBI_OUTPUT:1914 if (unlikely(!ops->vidioc_try_fmt_vbi_out))1915 break;1916 memset_after(p, 0, fmt.vbi.flags);1917 return ops->vidioc_try_fmt_vbi_out(file, fh, arg);1918 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:1919 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out))1920 break;1921 memset_after(p, 0, fmt.sliced.io_size);1922 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);1923 case V4L2_BUF_TYPE_SDR_CAPTURE:1924 if (unlikely(!ops->vidioc_try_fmt_sdr_cap))1925 break;1926 memset_after(p, 0, fmt.sdr.buffersize);1927 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg);1928 case V4L2_BUF_TYPE_SDR_OUTPUT:1929 if (unlikely(!ops->vidioc_try_fmt_sdr_out))1930 break;1931 memset_after(p, 0, fmt.sdr.buffersize);1932 return ops->vidioc_try_fmt_sdr_out(file, fh, arg);1933 case V4L2_BUF_TYPE_META_CAPTURE:1934 if (unlikely(!ops->vidioc_try_fmt_meta_cap))1935 break;1936 memset_after(p, 0, fmt.meta);1937 return ops->vidioc_try_fmt_meta_cap(file, fh, arg);1938 case V4L2_BUF_TYPE_META_OUTPUT:1939 if (unlikely(!ops->vidioc_try_fmt_meta_out))1940 break;1941 memset_after(p, 0, fmt.meta);1942 return ops->vidioc_try_fmt_meta_out(file, fh, arg);1943 }1944 return -EINVAL;1945}1946 1947static int v4l_streamon(const struct v4l2_ioctl_ops *ops,1948 struct file *file, void *fh, void *arg)1949{1950 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);1951}1952 1953static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,1954 struct file *file, void *fh, void *arg)1955{1956 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);1957}1958 1959static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,1960 struct file *file, void *fh, void *arg)1961{1962 struct video_device *vfd = video_devdata(file);1963 struct v4l2_tuner *p = arg;1964 int err;1965 1966 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?1967 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;1968 err = ops->vidioc_g_tuner(file, fh, p);1969 if (!err)1970 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;1971 return err;1972}1973 1974static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,1975 struct file *file, void *fh, void *arg)1976{1977 struct video_device *vfd = video_devdata(file);1978 struct v4l2_tuner *p = arg;1979 int ret;1980 1981 ret = v4l_enable_media_source(vfd);1982 if (ret)1983 return ret;1984 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?1985 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;1986 return ops->vidioc_s_tuner(file, fh, p);1987}1988 1989static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,1990 struct file *file, void *fh, void *arg)1991{1992 struct video_device *vfd = video_devdata(file);1993 struct v4l2_modulator *p = arg;1994 int err;1995 1996 if (vfd->vfl_type == VFL_TYPE_RADIO)1997 p->type = V4L2_TUNER_RADIO;1998 1999 err = ops->vidioc_g_modulator(file, fh, p);2000 if (!err)2001 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;2002 return err;2003}2004 2005static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops,2006 struct file *file, void *fh, void *arg)2007{2008 struct video_device *vfd = video_devdata(file);2009 struct v4l2_modulator *p = arg;2010 2011 if (vfd->vfl_type == VFL_TYPE_RADIO)2012 p->type = V4L2_TUNER_RADIO;2013 2014 return ops->vidioc_s_modulator(file, fh, p);2015}2016 2017static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,2018 struct file *file, void *fh, void *arg)2019{2020 struct video_device *vfd = video_devdata(file);2021 struct v4l2_frequency *p = arg;2022 2023 if (vfd->vfl_type == VFL_TYPE_SDR)2024 p->type = V4L2_TUNER_SDR;2025 else2026 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?2027 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;2028 return ops->vidioc_g_frequency(file, fh, p);2029}2030 2031static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,2032 struct file *file, void *fh, void *arg)2033{2034 struct video_device *vfd = video_devdata(file);2035 const struct v4l2_frequency *p = arg;2036 enum v4l2_tuner_type type;2037 int ret;2038 2039 ret = v4l_enable_media_source(vfd);2040 if (ret)2041 return ret;2042 if (vfd->vfl_type == VFL_TYPE_SDR) {2043 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)2044 return -EINVAL;2045 } else {2046 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?2047 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;2048 if (type != p->type)2049 return -EINVAL;2050 }2051 return ops->vidioc_s_frequency(file, fh, p);2052}2053 2054static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,2055 struct file *file, void *fh, void *arg)2056{2057 struct video_device *vfd = video_devdata(file);2058 struct v4l2_standard *p = arg;2059 2060 return v4l_video_std_enumstd(p, vfd->tvnorms);2061}2062 2063static int v4l_s_std(const struct v4l2_ioctl_ops *ops,2064 struct file *file, void *fh, void *arg)2065{2066 struct video_device *vfd = video_devdata(file);2067 v4l2_std_id id = *(v4l2_std_id *)arg, norm;2068 int ret;2069 2070 ret = v4l_enable_media_source(vfd);2071 if (ret)2072 return ret;2073 norm = id & vfd->tvnorms;2074 if (vfd->tvnorms && !norm) /* Check if std is supported */2075 return -EINVAL;2076 2077 /* Calls the specific handler */2078 return ops->vidioc_s_std(file, fh, norm);2079}2080 2081static int v4l_querystd(const struct v4l2_ioctl_ops *ops,2082 struct file *file, void *fh, void *arg)2083{2084 struct video_device *vfd = video_devdata(file);2085 v4l2_std_id *p = arg;2086 int ret;2087 2088 ret = v4l_enable_media_source(vfd);2089 if (ret)2090 return ret;2091 /*2092 * If no signal is detected, then the driver should return2093 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with2094 * any standards that do not apply removed.2095 *2096 * This means that tuners, audio and video decoders can join2097 * their efforts to improve the standards detection.2098 */2099 *p = vfd->tvnorms;2100 return ops->vidioc_querystd(file, fh, arg);2101}2102 2103static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,2104 struct file *file, void *fh, void *arg)2105{2106 struct video_device *vfd = video_devdata(file);2107 struct v4l2_hw_freq_seek *p = arg;2108 enum v4l2_tuner_type type;2109 int ret;2110 2111 ret = v4l_enable_media_source(vfd);2112 if (ret)2113 return ret;2114 /* s_hw_freq_seek is not supported for SDR for now */2115 if (vfd->vfl_type == VFL_TYPE_SDR)2116 return -EINVAL;2117 2118 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?2119 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;2120 if (p->type != type)2121 return -EINVAL;2122 return ops->vidioc_s_hw_freq_seek(file, fh, p);2123}2124 2125static int v4l_s_fbuf(const struct v4l2_ioctl_ops *ops,2126 struct file *file, void *fh, void *arg)2127{2128 struct v4l2_framebuffer *p = arg;2129 2130 p->base = NULL;2131 return ops->vidioc_s_fbuf(file, fh, p);2132}2133 2134static int v4l_overlay(const struct v4l2_ioctl_ops *ops,2135 struct file *file, void *fh, void *arg)2136{2137 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg);2138}2139 2140static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,2141 struct file *file, void *fh, void *arg)2142{2143 struct video_device *vfd = video_devdata(file);2144 struct v4l2_requestbuffers *p = arg;2145 int ret = check_fmt(file, p->type);2146 2147 if (ret)2148 return ret;2149 2150 memset_after(p, 0, flags);2151 2152 p->capabilities = 0;2153 if (is_valid_ioctl(vfd, VIDIOC_REMOVE_BUFS))2154 p->capabilities = V4L2_BUF_CAP_SUPPORTS_REMOVE_BUFS;2155 2156 return ops->vidioc_reqbufs(file, fh, p);2157}2158 2159static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,2160 struct file *file, void *fh, void *arg)2161{2162 struct v4l2_buffer *p = arg;2163 int ret = check_fmt(file, p->type);2164 2165 return ret ? ret : ops->vidioc_querybuf(file, fh, p);2166}2167 2168static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,2169 struct file *file, void *fh, void *arg)2170{2171 struct v4l2_buffer *p = arg;2172 int ret = check_fmt(file, p->type);2173 2174 return ret ? ret : ops->vidioc_qbuf(file, fh, p);2175}2176 2177static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,2178 struct file *file, void *fh, void *arg)2179{2180 struct v4l2_buffer *p = arg;2181 int ret = check_fmt(file, p->type);2182 2183 return ret ? ret : ops->vidioc_dqbuf(file, fh, p);2184}2185 2186static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,2187 struct file *file, void *fh, void *arg)2188{2189 struct video_device *vfd = video_devdata(file);2190 struct v4l2_create_buffers *create = arg;2191 int ret = check_fmt(file, create->format.type);2192 2193 if (ret)2194 return ret;2195 2196 memset_after(create, 0, flags);2197 2198 v4l_sanitize_format(&create->format);2199 2200 create->capabilities = 0;2201 if (is_valid_ioctl(vfd, VIDIOC_REMOVE_BUFS))2202 create->capabilities = V4L2_BUF_CAP_SUPPORTS_REMOVE_BUFS;2203 2204 ret = ops->vidioc_create_bufs(file, fh, create);2205 2206 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||2207 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT)2208 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;2209 2210 return ret;2211}2212 2213static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,2214 struct file *file, void *fh, void *arg)2215{2216 struct v4l2_buffer *b = arg;2217 int ret = check_fmt(file, b->type);2218 2219 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);2220}2221 2222static int v4l_remove_bufs(const struct v4l2_ioctl_ops *ops,2223 struct file *file, void *fh, void *arg)2224{2225 struct v4l2_remove_buffers *remove = arg;2226 2227 if (ops->vidioc_remove_bufs)2228 return ops->vidioc_remove_bufs(file, fh, remove);2229 2230 return -ENOTTY;2231}2232 2233static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,2234 struct file *file, void *fh, void *arg)2235{2236 struct video_device *vfd = video_devdata(file);2237 struct v4l2_streamparm *p = arg;2238 v4l2_std_id std;2239 int ret = check_fmt(file, p->type);2240 2241 if (ret)2242 return ret;2243 if (ops->vidioc_g_parm)2244 return ops->vidioc_g_parm(file, fh, p);2245 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&2246 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)2247 return -EINVAL;2248 if (vfd->device_caps & V4L2_CAP_READWRITE)2249 p->parm.capture.readbuffers = 2;2250 ret = ops->vidioc_g_std(file, fh, &std);2251 if (ret == 0)2252 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe);2253 return ret;2254}2255 2256static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,2257 struct file *file, void *fh, void *arg)2258{2259 struct v4l2_streamparm *p = arg;2260 int ret = check_fmt(file, p->type);2261 2262 if (ret)2263 return ret;2264 2265 /* Note: extendedmode is never used in drivers */2266 if (V4L2_TYPE_IS_OUTPUT(p->type)) {2267 memset(p->parm.output.reserved, 0,2268 sizeof(p->parm.output.reserved));2269 p->parm.output.extendedmode = 0;2270 p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY;2271 } else {2272 memset(p->parm.capture.reserved, 0,2273 sizeof(p->parm.capture.reserved));2274 p->parm.capture.extendedmode = 0;2275 p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY;2276 }2277 return ops->vidioc_s_parm(file, fh, p);2278}2279 2280static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,2281 struct file *file, void *fh, void *arg)2282{2283 struct video_device *vfd = video_devdata(file);2284 struct v4l2_queryctrl *p = arg;2285 struct v4l2_fh *vfh =2286 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;2287 2288 if (vfh && vfh->ctrl_handler)2289 return v4l2_queryctrl(vfh->ctrl_handler, p);2290 if (vfd->ctrl_handler)2291 return v4l2_queryctrl(vfd->ctrl_handler, p);2292 if (ops->vidioc_queryctrl)2293 return ops->vidioc_queryctrl(file, fh, p);2294 return -ENOTTY;2295}2296 2297static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops,2298 struct file *file, void *fh, void *arg)2299{2300 struct video_device *vfd = video_devdata(file);2301 struct v4l2_query_ext_ctrl *p = arg;2302 struct v4l2_fh *vfh =2303 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;2304 2305 if (vfh && vfh->ctrl_handler)2306 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p);2307 if (vfd->ctrl_handler)2308 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p);2309 if (ops->vidioc_query_ext_ctrl)2310 return ops->vidioc_query_ext_ctrl(file, fh, p);2311 return -ENOTTY;2312}2313 2314static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,2315 struct file *file, void *fh, void *arg)2316{2317 struct video_device *vfd = video_devdata(file);2318 struct v4l2_querymenu *p = arg;2319 struct v4l2_fh *vfh =2320 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;2321 2322 if (vfh && vfh->ctrl_handler)2323 return v4l2_querymenu(vfh->ctrl_handler, p);2324 if (vfd->ctrl_handler)2325 return v4l2_querymenu(vfd->ctrl_handler, p);2326 if (ops->vidioc_querymenu)2327 return ops->vidioc_querymenu(file, fh, p);2328 return -ENOTTY;2329}2330 2331static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops,2332 struct file *file, void *fh, void *arg)2333{2334 struct video_device *vfd = video_devdata(file);2335 struct v4l2_control *p = arg;2336 struct v4l2_fh *vfh =2337 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;2338 struct v4l2_ext_controls ctrls;2339 struct v4l2_ext_control ctrl;2340 2341 if (vfh && vfh->ctrl_handler)2342 return v4l2_g_ctrl(vfh->ctrl_handler, p);2343 if (vfd->ctrl_handler)2344 return v4l2_g_ctrl(vfd->ctrl_handler, p);2345 if (ops->vidioc_g_ctrl)2346 return ops->vidioc_g_ctrl(file, fh, p);2347 if (ops->vidioc_g_ext_ctrls == NULL)2348 return -ENOTTY;2349 2350 ctrls.which = V4L2_CTRL_ID2WHICH(p->id);2351 ctrls.count = 1;2352 ctrls.controls = &ctrl;2353 ctrl.id = p->id;2354 ctrl.value = p->value;2355 if (check_ext_ctrls(&ctrls, VIDIOC_G_CTRL)) {2356 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);2357 2358 if (ret == 0)2359 p->value = ctrl.value;2360 return ret;2361 }2362 return -EINVAL;2363}2364 2365static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,2366 struct file *file, void *fh, void *arg)2367{2368 struct video_device *vfd = video_devdata(file);2369 struct v4l2_control *p = arg;2370 struct v4l2_fh *vfh =2371 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;2372 struct v4l2_ext_controls ctrls;2373 struct v4l2_ext_control ctrl;2374 int ret;2375 2376 if (vfh && vfh->ctrl_handler)2377 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);2378 if (vfd->ctrl_handler)2379 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);2380 if (ops->vidioc_s_ctrl)2381 return ops->vidioc_s_ctrl(file, fh, p);2382 if (ops->vidioc_s_ext_ctrls == NULL)2383 return -ENOTTY;2384 2385 ctrls.which = V4L2_CTRL_ID2WHICH(p->id);2386 ctrls.count = 1;2387 ctrls.controls = &ctrl;2388 ctrl.id = p->id;2389 ctrl.value = p->value;2390 if (!check_ext_ctrls(&ctrls, VIDIOC_S_CTRL))2391 return -EINVAL;2392 ret = ops->vidioc_s_ext_ctrls(file, fh, &ctrls);2393 p->value = ctrl.value;2394 return ret;2395}2396 2397static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,2398 struct file *file, void *fh, void *arg)2399{2400 struct video_device *vfd = video_devdata(file);2401 struct v4l2_ext_controls *p = arg;2402 struct v4l2_fh *vfh =2403 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;2404 2405 p->error_idx = p->count;2406 if (vfh && vfh->ctrl_handler)2407 return v4l2_g_ext_ctrls(vfh->ctrl_handler,2408 vfd, vfd->v4l2_dev->mdev, p);2409 if (vfd->ctrl_handler)2410 return v4l2_g_ext_ctrls(vfd->ctrl_handler,2411 vfd, vfd->v4l2_dev->mdev, p);2412 if (ops->vidioc_g_ext_ctrls == NULL)2413 return -ENOTTY;2414 return check_ext_ctrls(p, VIDIOC_G_EXT_CTRLS) ?2415 ops->vidioc_g_ext_ctrls(file, fh, p) : -EINVAL;2416}2417 2418static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops,2419 struct file *file, void *fh, void *arg)2420{2421 struct video_device *vfd = video_devdata(file);2422 struct v4l2_ext_controls *p = arg;2423 struct v4l2_fh *vfh =2424 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;2425 2426 p->error_idx = p->count;2427 if (vfh && vfh->ctrl_handler)2428 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler,2429 vfd, vfd->v4l2_dev->mdev, p);2430 if (vfd->ctrl_handler)2431 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler,2432 vfd, vfd->v4l2_dev->mdev, p);2433 if (ops->vidioc_s_ext_ctrls == NULL)2434 return -ENOTTY;2435 return check_ext_ctrls(p, VIDIOC_S_EXT_CTRLS) ?2436 ops->vidioc_s_ext_ctrls(file, fh, p) : -EINVAL;2437}2438 2439static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,2440 struct file *file, void *fh, void *arg)2441{2442 struct video_device *vfd = video_devdata(file);2443 struct v4l2_ext_controls *p = arg;2444 struct v4l2_fh *vfh =2445 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;2446 2447 p->error_idx = p->count;2448 if (vfh && vfh->ctrl_handler)2449 return v4l2_try_ext_ctrls(vfh->ctrl_handler,2450 vfd, vfd->v4l2_dev->mdev, p);2451 if (vfd->ctrl_handler)2452 return v4l2_try_ext_ctrls(vfd->ctrl_handler,2453 vfd, vfd->v4l2_dev->mdev, p);2454 if (ops->vidioc_try_ext_ctrls == NULL)2455 return -ENOTTY;2456 return check_ext_ctrls(p, VIDIOC_TRY_EXT_CTRLS) ?2457 ops->vidioc_try_ext_ctrls(file, fh, p) : -EINVAL;2458}2459 2460/*2461 * The selection API specified originally that the _MPLANE buffer types2462 * shouldn't be used. The reasons for this are lost in the mists of time2463 * (or just really crappy memories). Regardless, this is really annoying2464 * for userspace. So to keep things simple we map _MPLANE buffer types2465 * to their 'regular' counterparts before calling the driver. And we2466 * restore it afterwards. This way applications can use either buffer2467 * type and drivers don't need to check for both.2468 */2469static int v4l_g_selection(const struct v4l2_ioctl_ops *ops,2470 struct file *file, void *fh, void *arg)2471{2472 struct v4l2_selection *p = arg;2473 u32 old_type = p->type;2474 int ret;2475 2476 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)2477 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;2478 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)2479 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;2480 ret = ops->vidioc_g_selection(file, fh, p);2481 p->type = old_type;2482 return ret;2483}2484 2485static int v4l_s_selection(const struct v4l2_ioctl_ops *ops,2486 struct file *file, void *fh, void *arg)2487{2488 struct v4l2_selection *p = arg;2489 u32 old_type = p->type;2490 int ret;2491 2492 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)2493 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;2494 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)2495 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;2496 ret = ops->vidioc_s_selection(file, fh, p);2497 p->type = old_type;2498 return ret;2499}2500 2501static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,2502 struct file *file, void *fh, void *arg)2503{2504 struct video_device *vfd = video_devdata(file);2505 struct v4l2_crop *p = arg;2506 struct v4l2_selection s = {2507 .type = p->type,2508 };2509 int ret;2510 2511 /* simulate capture crop using selection api */2512 2513 /* crop means compose for output devices */2514 if (V4L2_TYPE_IS_OUTPUT(p->type))2515 s.target = V4L2_SEL_TGT_COMPOSE;2516 else2517 s.target = V4L2_SEL_TGT_CROP;2518 2519 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))2520 s.target = s.target == V4L2_SEL_TGT_COMPOSE ?2521 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE;2522 2523 ret = v4l_g_selection(ops, file, fh, &s);2524 2525 /* copying results to old structure on success */2526 if (!ret)2527 p->c = s.r;2528 return ret;2529}2530 2531static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,2532 struct file *file, void *fh, void *arg)2533{2534 struct video_device *vfd = video_devdata(file);2535 struct v4l2_crop *p = arg;2536 struct v4l2_selection s = {2537 .type = p->type,2538 .r = p->c,2539 };2540 2541 /* simulate capture crop using selection api */2542 2543 /* crop means compose for output devices */2544 if (V4L2_TYPE_IS_OUTPUT(p->type))2545 s.target = V4L2_SEL_TGT_COMPOSE;2546 else2547 s.target = V4L2_SEL_TGT_CROP;2548 2549 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))2550 s.target = s.target == V4L2_SEL_TGT_COMPOSE ?2551 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE;2552 2553 return v4l_s_selection(ops, file, fh, &s);2554}2555 2556static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,2557 struct file *file, void *fh, void *arg)2558{2559 struct video_device *vfd = video_devdata(file);2560 struct v4l2_cropcap *p = arg;2561 struct v4l2_selection s = { .type = p->type };2562 int ret = 0;2563 2564 /* setting trivial pixelaspect */2565 p->pixelaspect.numerator = 1;2566 p->pixelaspect.denominator = 1;2567 2568 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)2569 s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;2570 else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)2571 s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;2572 2573 /*2574 * The determine_valid_ioctls() call already should ensure2575 * that this can never happen, but just in case...2576 */2577 if (WARN_ON(!ops->vidioc_g_selection))2578 return -ENOTTY;2579 2580 if (ops->vidioc_g_pixelaspect)2581 ret = ops->vidioc_g_pixelaspect(file, fh, s.type,2582 &p->pixelaspect);2583 2584 /*2585 * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the2586 * square pixel aspect ratio in that case.2587 */2588 if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD)2589 return ret;2590 2591 /* Use g_selection() to fill in the bounds and defrect rectangles */2592 2593 /* obtaining bounds */2594 if (V4L2_TYPE_IS_OUTPUT(p->type))2595 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;2596 else2597 s.target = V4L2_SEL_TGT_CROP_BOUNDS;2598 2599 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))2600 s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ?2601 V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS;2602 2603 ret = v4l_g_selection(ops, file, fh, &s);2604 if (ret)2605 return ret;2606 p->bounds = s.r;2607 2608 /* obtaining defrect */2609 if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS)2610 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;2611 else2612 s.target = V4L2_SEL_TGT_CROP_DEFAULT;2613 2614 ret = v4l_g_selection(ops, file, fh, &s);2615 if (ret)2616 return ret;2617 p->defrect = s.r;2618 2619 return 0;2620}2621 2622static int v4l_log_status(const struct v4l2_ioctl_ops *ops,2623 struct file *file, void *fh, void *arg)2624{2625 struct video_device *vfd = video_devdata(file);2626 int ret;2627 2628 if (vfd->v4l2_dev)2629 pr_info("%s: ================= START STATUS =================\n",2630 vfd->v4l2_dev->name);2631 ret = ops->vidioc_log_status(file, fh);2632 if (vfd->v4l2_dev)2633 pr_info("%s: ================== END STATUS ==================\n",2634 vfd->v4l2_dev->name);2635 return ret;2636}2637 2638static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,2639 struct file *file, void *fh, void *arg)2640{2641#ifdef CONFIG_VIDEO_ADV_DEBUG2642 struct v4l2_dbg_register *p = arg;2643 struct video_device *vfd = video_devdata(file);2644 struct v4l2_subdev *sd;2645 int idx = 0;2646 2647 if (!capable(CAP_SYS_ADMIN))2648 return -EPERM;2649 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {2650 if (vfd->v4l2_dev == NULL)2651 return -EINVAL;2652 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)2653 if (p->match.addr == idx++)2654 return v4l2_subdev_call(sd, core, g_register, p);2655 return -EINVAL;2656 }2657 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&2658 (ops->vidioc_g_chip_info || p->match.addr == 0))2659 return ops->vidioc_g_register(file, fh, p);2660 return -EINVAL;2661#else2662 return -ENOTTY;2663#endif2664}2665 2666static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,2667 struct file *file, void *fh, void *arg)2668{2669#ifdef CONFIG_VIDEO_ADV_DEBUG2670 const struct v4l2_dbg_register *p = arg;2671 struct video_device *vfd = video_devdata(file);2672 struct v4l2_subdev *sd;2673 int idx = 0;2674 2675 if (!capable(CAP_SYS_ADMIN))2676 return -EPERM;2677 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {2678 if (vfd->v4l2_dev == NULL)2679 return -EINVAL;2680 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)2681 if (p->match.addr == idx++)2682 return v4l2_subdev_call(sd, core, s_register, p);2683 return -EINVAL;2684 }2685 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&2686 (ops->vidioc_g_chip_info || p->match.addr == 0))2687 return ops->vidioc_s_register(file, fh, p);2688 return -EINVAL;2689#else2690 return -ENOTTY;2691#endif2692}2693 2694static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,2695 struct file *file, void *fh, void *arg)2696{2697#ifdef CONFIG_VIDEO_ADV_DEBUG2698 struct video_device *vfd = video_devdata(file);2699 struct v4l2_dbg_chip_info *p = arg;2700 struct v4l2_subdev *sd;2701 int idx = 0;2702 2703 switch (p->match.type) {2704 case V4L2_CHIP_MATCH_BRIDGE:2705 if (ops->vidioc_s_register)2706 p->flags |= V4L2_CHIP_FL_WRITABLE;2707 if (ops->vidioc_g_register)2708 p->flags |= V4L2_CHIP_FL_READABLE;2709 strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));2710 if (ops->vidioc_g_chip_info)2711 return ops->vidioc_g_chip_info(file, fh, arg);2712 if (p->match.addr)2713 return -EINVAL;2714 return 0;2715 2716 case V4L2_CHIP_MATCH_SUBDEV:2717 if (vfd->v4l2_dev == NULL)2718 break;2719 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {2720 if (p->match.addr != idx++)2721 continue;2722 if (sd->ops->core && sd->ops->core->s_register)2723 p->flags |= V4L2_CHIP_FL_WRITABLE;2724 if (sd->ops->core && sd->ops->core->g_register)2725 p->flags |= V4L2_CHIP_FL_READABLE;2726 strscpy(p->name, sd->name, sizeof(p->name));2727 return 0;2728 }2729 break;2730 }2731 return -EINVAL;2732#else2733 return -ENOTTY;2734#endif2735}2736 2737static int v4l_dqevent(const struct v4l2_ioctl_ops *ops,2738 struct file *file, void *fh, void *arg)2739{2740 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK);2741}2742 2743static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,2744 struct file *file, void *fh, void *arg)2745{2746 return ops->vidioc_subscribe_event(fh, arg);2747}2748 2749static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,2750 struct file *file, void *fh, void *arg)2751{2752 return ops->vidioc_unsubscribe_event(fh, arg);2753}2754 2755static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,2756 struct file *file, void *fh, void *arg)2757{2758 struct v4l2_sliced_vbi_cap *p = arg;2759 int ret = check_fmt(file, p->type);2760 2761 if (ret)2762 return ret;2763 2764 /* Clear up to type, everything after type is zeroed already */2765 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));2766 2767 return ops->vidioc_g_sliced_vbi_cap(file, fh, p);2768}2769 2770static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,2771 struct file *file, void *fh, void *arg)2772{2773 struct video_device *vfd = video_devdata(file);2774 struct v4l2_frequency_band *p = arg;2775 enum v4l2_tuner_type type;2776 int err;2777 2778 if (vfd->vfl_type == VFL_TYPE_SDR) {2779 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)2780 return -EINVAL;2781 type = p->type;2782 } else {2783 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?2784 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;2785 if (type != p->type)2786 return -EINVAL;2787 }2788 if (ops->vidioc_enum_freq_bands) {2789 err = ops->vidioc_enum_freq_bands(file, fh, p);2790 if (err != -ENOTTY)2791 return err;2792 }2793 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) {2794 struct v4l2_tuner t = {2795 .index = p->tuner,2796 .type = type,2797 };2798 2799 if (p->index)2800 return -EINVAL;2801 err = ops->vidioc_g_tuner(file, fh, &t);2802 if (err)2803 return err;2804 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;2805 p->rangelow = t.rangelow;2806 p->rangehigh = t.rangehigh;2807 p->modulation = (type == V4L2_TUNER_RADIO) ?2808 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;2809 return 0;2810 }2811 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) {2812 struct v4l2_modulator m = {2813 .index = p->tuner,2814 };2815 2816 if (type != V4L2_TUNER_RADIO)2817 return -EINVAL;2818 if (p->index)2819 return -EINVAL;2820 err = ops->vidioc_g_modulator(file, fh, &m);2821 if (err)2822 return err;2823 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;2824 p->rangelow = m.rangelow;2825 p->rangehigh = m.rangehigh;2826 p->modulation = (type == V4L2_TUNER_RADIO) ?2827 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;2828 return 0;2829 }2830 return -ENOTTY;2831}2832 2833struct v4l2_ioctl_info {2834 unsigned int ioctl;2835 u32 flags;2836 const char * const name;2837 int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file,2838 void *fh, void *p);2839 void (*debug)(const void *arg, bool write_only);2840};2841 2842/* This control needs a priority check */2843#define INFO_FL_PRIO (1 << 0)2844/* This control can be valid if the filehandle passes a control handler. */2845#define INFO_FL_CTRL (1 << 1)2846/* Queuing ioctl */2847#define INFO_FL_QUEUE (1 << 2)2848/* Always copy back result, even on error */2849#define INFO_FL_ALWAYS_COPY (1 << 3)2850/* Zero struct from after the field to the end */2851#define INFO_FL_CLEAR(v4l2_struct, field) \2852 ((offsetof(struct v4l2_struct, field) + \2853 sizeof_field(struct v4l2_struct, field)) << 16)2854#define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)2855 2856#define DEFINE_V4L_STUB_FUNC(_vidioc) \2857 static int v4l_stub_ ## _vidioc( \2858 const struct v4l2_ioctl_ops *ops, \2859 struct file *file, void *fh, void *p) \2860 { \2861 return ops->vidioc_ ## _vidioc(file, fh, p); \2862 }2863 2864#define IOCTL_INFO(_ioctl, _func, _debug, _flags) \2865 [_IOC_NR(_ioctl)] = { \2866 .ioctl = _ioctl, \2867 .flags = _flags, \2868 .name = #_ioctl, \2869 .func = _func, \2870 .debug = _debug, \2871 }2872 2873DEFINE_V4L_STUB_FUNC(g_fbuf)2874DEFINE_V4L_STUB_FUNC(expbuf)2875DEFINE_V4L_STUB_FUNC(g_std)2876DEFINE_V4L_STUB_FUNC(g_audio)2877DEFINE_V4L_STUB_FUNC(s_audio)2878DEFINE_V4L_STUB_FUNC(g_edid)2879DEFINE_V4L_STUB_FUNC(s_edid)2880DEFINE_V4L_STUB_FUNC(g_audout)2881DEFINE_V4L_STUB_FUNC(s_audout)2882DEFINE_V4L_STUB_FUNC(g_jpegcomp)2883DEFINE_V4L_STUB_FUNC(s_jpegcomp)2884DEFINE_V4L_STUB_FUNC(enumaudio)2885DEFINE_V4L_STUB_FUNC(enumaudout)2886DEFINE_V4L_STUB_FUNC(enum_framesizes)2887DEFINE_V4L_STUB_FUNC(enum_frameintervals)2888DEFINE_V4L_STUB_FUNC(g_enc_index)2889DEFINE_V4L_STUB_FUNC(encoder_cmd)2890DEFINE_V4L_STUB_FUNC(try_encoder_cmd)2891DEFINE_V4L_STUB_FUNC(decoder_cmd)2892DEFINE_V4L_STUB_FUNC(try_decoder_cmd)2893DEFINE_V4L_STUB_FUNC(s_dv_timings)2894DEFINE_V4L_STUB_FUNC(g_dv_timings)2895DEFINE_V4L_STUB_FUNC(enum_dv_timings)2896DEFINE_V4L_STUB_FUNC(query_dv_timings)2897DEFINE_V4L_STUB_FUNC(dv_timings_cap)2898 2899static const struct v4l2_ioctl_info v4l2_ioctls[] = {2900 IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),2901 IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, 0),2902 IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0),2903 IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),2904 IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),2905 IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),2906 IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0),2907 IOCTL_INFO(VIDIOC_S_FBUF, v4l_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),2908 IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO),2909 IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),2910 IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)),2911 IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),2912 IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),2913 IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),2914 IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),2915 IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),2916 IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0),2917 IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),2918 IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),2919 IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),2920 IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),2921 IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),2922 IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),2923 IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),2924 IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0),2925 IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO),2926 IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),2927 IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),2928 IOCTL_INFO(VIDIOC_G_INPUT, v4l_g_input, v4l_print_u32, 0),2929 IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),2930 IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY),2931 IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY),2932 IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_g_output, v4l_print_u32, 0),2933 IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),2934 IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),2935 IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0),2936 IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO),2937 IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),2938 IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO),2939 IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),2940 IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),2941 IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),2942 IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),2943 IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),2944 IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)),2945 IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)),2946 IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0),2947 IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),2948 IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),2949 IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),2950 IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),2951 IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),2952 IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),2953 IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),2954 IOCTL_INFO(VIDIOC_G_SLICED_VBI_CAP, v4l_g_sliced_vbi_cap, v4l_print_sliced_vbi_cap, INFO_FL_CLEAR(v4l2_sliced_vbi_cap, type)),2955 IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),2956 IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY),2957 IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL | INFO_FL_ALWAYS_COPY),2958 IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY),2959 IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),2960 IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),2961 IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0),2962 IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),2963 IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),2964 IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),2965 IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0),2966 IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),2967 IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),2968 IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),2969 IOCTL_INFO(VIDIOC_S_DV_TIMINGS, v4l_stub_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_dv_timings, bt.flags)),2970 IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0),2971 IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),2972 IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),2973 IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),2974 IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),2975 IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),2976 IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)),2977 IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY),2978 IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)),2979 IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),2980 IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),2981 IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),2982 IOCTL_INFO(VIDIOC_REMOVE_BUFS, v4l_remove_bufs, v4l_print_remove_buffers, INFO_FL_PRIO | INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_remove_buffers, type)),2983};2984#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)2985 2986static bool v4l2_is_known_ioctl(unsigned int cmd)2987{2988 if (_IOC_NR(cmd) >= V4L2_IOCTLS)2989 return false;2990 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;2991}2992 2993static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev,2994 struct v4l2_fh *vfh, unsigned int cmd,2995 void *arg)2996{2997 if (_IOC_NR(cmd) >= V4L2_IOCTLS)2998 return vdev->lock;2999 if (vfh && vfh->m2m_ctx &&3000 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) {3001 if (vfh->m2m_ctx->q_lock)3002 return vfh->m2m_ctx->q_lock;3003 }3004 if (vdev->queue && vdev->queue->lock &&3005 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))3006 return vdev->queue->lock;3007 return vdev->lock;3008}3009 3010/* Common ioctl debug function. This function can be used by3011 external ioctl messages as well as internal V4L ioctl */3012void v4l_printk_ioctl(const char *prefix, unsigned int cmd)3013{3014 const char *dir, *type;3015 3016 if (prefix)3017 printk(KERN_DEBUG "%s: ", prefix);3018 3019 switch (_IOC_TYPE(cmd)) {3020 case 'd':3021 type = "v4l2_int";3022 break;3023 case 'V':3024 if (!v4l2_is_known_ioctl(cmd)) {3025 type = "v4l2";3026 break;3027 }3028 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);3029 return;3030 default:3031 type = "unknown";3032 break;3033 }3034 3035 switch (_IOC_DIR(cmd)) {3036 case _IOC_NONE: dir = "--"; break;3037 case _IOC_READ: dir = "r-"; break;3038 case _IOC_WRITE: dir = "-w"; break;3039 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;3040 default: dir = "*ERR*"; break;3041 }3042 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",3043 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);3044}3045EXPORT_SYMBOL(v4l_printk_ioctl);3046 3047static long __video_do_ioctl(struct file *file,3048 unsigned int cmd, void *arg)3049{3050 struct video_device *vfd = video_devdata(file);3051 struct mutex *req_queue_lock = NULL;3052 struct mutex *lock; /* ioctl serialization mutex */3053 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;3054 bool write_only = false;3055 struct v4l2_ioctl_info default_info;3056 const struct v4l2_ioctl_info *info;3057 void *fh = file->private_data;3058 struct v4l2_fh *vfh = NULL;3059 int dev_debug = vfd->dev_debug;3060 long ret = -ENOTTY;3061 3062 if (ops == NULL) {3063 pr_warn("%s: has no ioctl_ops.\n",3064 video_device_node_name(vfd));3065 return ret;3066 }3067 3068 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))3069 vfh = file->private_data;3070 3071 /*3072 * We need to serialize streamon/off with queueing new requests.3073 * These ioctls may trigger the cancellation of a streaming3074 * operation, and that should not be mixed with queueing a new3075 * request at the same time.3076 */3077 if (v4l2_device_supports_requests(vfd->v4l2_dev) &&3078 (cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF)) {3079 req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex;3080 3081 if (mutex_lock_interruptible(req_queue_lock))3082 return -ERESTARTSYS;3083 }3084 3085 lock = v4l2_ioctl_get_lock(vfd, vfh, cmd, arg);3086 3087 if (lock && mutex_lock_interruptible(lock)) {3088 if (req_queue_lock)3089 mutex_unlock(req_queue_lock);3090 return -ERESTARTSYS;3091 }3092 3093 if (!video_is_registered(vfd)) {3094 ret = -ENODEV;3095 goto unlock;3096 }3097 3098 if (v4l2_is_known_ioctl(cmd)) {3099 info = &v4l2_ioctls[_IOC_NR(cmd)];3100 3101 if (!is_valid_ioctl(vfd, cmd) &&3102 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))3103 goto done;3104 3105 if (vfh && (info->flags & INFO_FL_PRIO)) {3106 ret = v4l2_prio_check(vfd->prio, vfh->prio);3107 if (ret)3108 goto done;3109 }3110 } else {3111 default_info.ioctl = cmd;3112 default_info.flags = 0;3113 default_info.debug = v4l_print_default;3114 info = &default_info;3115 }3116 3117 write_only = _IOC_DIR(cmd) == _IOC_WRITE;3118 if (info != &default_info) {3119 ret = info->func(ops, file, fh, arg);3120 } else if (!ops->vidioc_default) {3121 ret = -ENOTTY;3122 } else {3123 ret = ops->vidioc_default(file, fh,3124 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,3125 cmd, arg);3126 }3127 3128done:3129 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) {3130 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) &&3131 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF))3132 goto unlock;3133 3134 v4l_printk_ioctl(video_device_node_name(vfd), cmd);3135 if (ret < 0)3136 pr_cont(": error %ld", ret);3137 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG))3138 pr_cont("\n");3139 else if (_IOC_DIR(cmd) == _IOC_NONE)3140 info->debug(arg, write_only);3141 else {3142 pr_cont(": ");3143 info->debug(arg, write_only);3144 }3145 }3146 3147unlock:3148 if (lock)3149 mutex_unlock(lock);3150 if (req_queue_lock)3151 mutex_unlock(req_queue_lock);3152 return ret;3153}3154 3155static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,3156 void __user **user_ptr, void ***kernel_ptr)3157{3158 int ret = 0;3159 3160 switch (cmd) {3161 case VIDIOC_PREPARE_BUF:3162 case VIDIOC_QUERYBUF:3163 case VIDIOC_QBUF:3164 case VIDIOC_DQBUF: {3165 struct v4l2_buffer *buf = parg;3166 3167 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {3168 if (buf->length > VIDEO_MAX_PLANES) {3169 ret = -EINVAL;3170 break;3171 }3172 *user_ptr = (void __user *)buf->m.planes;3173 *kernel_ptr = (void **)&buf->m.planes;3174 *array_size = sizeof(struct v4l2_plane) * buf->length;3175 ret = 1;3176 }3177 break;3178 }3179 3180 case VIDIOC_G_EDID:3181 case VIDIOC_S_EDID: {3182 struct v4l2_edid *edid = parg;3183 3184 if (edid->blocks) {3185 if (edid->blocks > 256) {3186 ret = -EINVAL;3187 break;3188 }3189 *user_ptr = (void __user *)edid->edid;3190 *kernel_ptr = (void **)&edid->edid;3191 *array_size = edid->blocks * 128;3192 ret = 1;3193 }3194 break;3195 }3196 3197 case VIDIOC_S_EXT_CTRLS:3198 case VIDIOC_G_EXT_CTRLS:3199 case VIDIOC_TRY_EXT_CTRLS: {3200 struct v4l2_ext_controls *ctrls = parg;3201 3202 if (ctrls->count != 0) {3203 if (ctrls->count > V4L2_CID_MAX_CTRLS) {3204 ret = -EINVAL;3205 break;3206 }3207 *user_ptr = (void __user *)ctrls->controls;3208 *kernel_ptr = (void **)&ctrls->controls;3209 *array_size = sizeof(struct v4l2_ext_control)3210 * ctrls->count;3211 ret = 1;3212 }3213 break;3214 }3215 3216 case VIDIOC_SUBDEV_G_ROUTING:3217 case VIDIOC_SUBDEV_S_ROUTING: {3218 struct v4l2_subdev_routing *routing = parg;3219 3220 if (routing->len_routes > 256)3221 return -E2BIG;3222 3223 *user_ptr = u64_to_user_ptr(routing->routes);3224 *kernel_ptr = (void **)&routing->routes;3225 *array_size = sizeof(struct v4l2_subdev_route)3226 * routing->len_routes;3227 ret = 1;3228 break;3229 }3230 }3231 3232 return ret;3233}3234 3235static unsigned int video_translate_cmd(unsigned int cmd)3236{3237#if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME)3238 switch (cmd) {3239 case VIDIOC_DQEVENT_TIME32:3240 return VIDIOC_DQEVENT;3241 case VIDIOC_QUERYBUF_TIME32:3242 return VIDIOC_QUERYBUF;3243 case VIDIOC_QBUF_TIME32:3244 return VIDIOC_QBUF;3245 case VIDIOC_DQBUF_TIME32:3246 return VIDIOC_DQBUF;3247 case VIDIOC_PREPARE_BUF_TIME32:3248 return VIDIOC_PREPARE_BUF;3249 }3250#endif3251 if (in_compat_syscall())3252 return v4l2_compat_translate_cmd(cmd);3253 3254 return cmd;3255}3256 3257static int video_get_user(void __user *arg, void *parg,3258 unsigned int real_cmd, unsigned int cmd,3259 bool *always_copy)3260{3261 unsigned int n = _IOC_SIZE(real_cmd);3262 int err = 0;3263 3264 if (!(_IOC_DIR(cmd) & _IOC_WRITE)) {3265 /* read-only ioctl */3266 memset(parg, 0, n);3267 return 0;3268 }3269 3270 /*3271 * In some cases, only a few fields are used as input,3272 * i.e. when the app sets "index" and then the driver3273 * fills in the rest of the structure for the thing3274 * with that index. We only need to copy up the first3275 * non-input field.3276 */3277 if (v4l2_is_known_ioctl(real_cmd)) {3278 u32 flags = v4l2_ioctls[_IOC_NR(real_cmd)].flags;3279 3280 if (flags & INFO_FL_CLEAR_MASK)3281 n = (flags & INFO_FL_CLEAR_MASK) >> 16;3282 *always_copy = flags & INFO_FL_ALWAYS_COPY;3283 }3284 3285 if (cmd == real_cmd) {3286 if (copy_from_user(parg, (void __user *)arg, n))3287 err = -EFAULT;3288 } else if (in_compat_syscall()) {3289 memset(parg, 0, n);3290 err = v4l2_compat_get_user(arg, parg, cmd);3291 } else {3292 memset(parg, 0, n);3293#if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME)3294 switch (cmd) {3295 case VIDIOC_QUERYBUF_TIME32:3296 case VIDIOC_QBUF_TIME32:3297 case VIDIOC_DQBUF_TIME32:3298 case VIDIOC_PREPARE_BUF_TIME32: {3299 struct v4l2_buffer_time32 vb32;3300 struct v4l2_buffer *vb = parg;3301 3302 if (copy_from_user(&vb32, arg, sizeof(vb32)))3303 return -EFAULT;3304 3305 *vb = (struct v4l2_buffer) {3306 .index = vb32.index,3307 .type = vb32.type,3308 .bytesused = vb32.bytesused,3309 .flags = vb32.flags,3310 .field = vb32.field,3311 .timestamp.tv_sec = vb32.timestamp.tv_sec,3312 .timestamp.tv_usec = vb32.timestamp.tv_usec,3313 .timecode = vb32.timecode,3314 .sequence = vb32.sequence,3315 .memory = vb32.memory,3316 .m.userptr = vb32.m.userptr,3317 .length = vb32.length,3318 .request_fd = vb32.request_fd,3319 };3320 break;3321 }3322 }3323#endif3324 }3325 3326 /* zero out anything we don't copy from userspace */3327 if (!err && n < _IOC_SIZE(real_cmd))3328 memset((u8 *)parg + n, 0, _IOC_SIZE(real_cmd) - n);3329 return err;3330}3331 3332static int video_put_user(void __user *arg, void *parg,3333 unsigned int real_cmd, unsigned int cmd)3334{3335 if (!(_IOC_DIR(cmd) & _IOC_READ))3336 return 0;3337 3338 if (cmd == real_cmd) {3339 /* Copy results into user buffer */3340 if (copy_to_user(arg, parg, _IOC_SIZE(cmd)))3341 return -EFAULT;3342 return 0;3343 }3344 3345 if (in_compat_syscall())3346 return v4l2_compat_put_user(arg, parg, cmd);3347 3348#if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME)3349 switch (cmd) {3350 case VIDIOC_DQEVENT_TIME32: {3351 struct v4l2_event *ev = parg;3352 struct v4l2_event_time32 ev32;3353 3354 memset(&ev32, 0, sizeof(ev32));3355 3356 ev32.type = ev->type;3357 ev32.pending = ev->pending;3358 ev32.sequence = ev->sequence;3359 ev32.timestamp.tv_sec = ev->timestamp.tv_sec;3360 ev32.timestamp.tv_nsec = ev->timestamp.tv_nsec;3361 ev32.id = ev->id;3362 3363 memcpy(&ev32.u, &ev->u, sizeof(ev->u));3364 memcpy(&ev32.reserved, &ev->reserved, sizeof(ev->reserved));3365 3366 if (copy_to_user(arg, &ev32, sizeof(ev32)))3367 return -EFAULT;3368 break;3369 }3370 case VIDIOC_QUERYBUF_TIME32:3371 case VIDIOC_QBUF_TIME32:3372 case VIDIOC_DQBUF_TIME32:3373 case VIDIOC_PREPARE_BUF_TIME32: {3374 struct v4l2_buffer *vb = parg;3375 struct v4l2_buffer_time32 vb32;3376 3377 memset(&vb32, 0, sizeof(vb32));3378 3379 vb32.index = vb->index;3380 vb32.type = vb->type;3381 vb32.bytesused = vb->bytesused;3382 vb32.flags = vb->flags;3383 vb32.field = vb->field;3384 vb32.timestamp.tv_sec = vb->timestamp.tv_sec;3385 vb32.timestamp.tv_usec = vb->timestamp.tv_usec;3386 vb32.timecode = vb->timecode;3387 vb32.sequence = vb->sequence;3388 vb32.memory = vb->memory;3389 vb32.m.userptr = vb->m.userptr;3390 vb32.length = vb->length;3391 vb32.request_fd = vb->request_fd;3392 3393 if (copy_to_user(arg, &vb32, sizeof(vb32)))3394 return -EFAULT;3395 break;3396 }3397 }3398#endif3399 3400 return 0;3401}3402 3403long3404video_usercopy(struct file *file, unsigned int orig_cmd, unsigned long arg,3405 v4l2_kioctl func)3406{3407 char sbuf[128];3408 void *mbuf = NULL, *array_buf = NULL;3409 void *parg = (void *)arg;3410 long err = -EINVAL;3411 bool has_array_args;3412 bool always_copy = false;3413 size_t array_size = 0;3414 void __user *user_ptr = NULL;3415 void **kernel_ptr = NULL;3416 unsigned int cmd = video_translate_cmd(orig_cmd);3417 const size_t ioc_size = _IOC_SIZE(cmd);3418 3419 /* Copy arguments into temp kernel buffer */3420 if (_IOC_DIR(cmd) != _IOC_NONE) {3421 if (ioc_size <= sizeof(sbuf)) {3422 parg = sbuf;3423 } else {3424 /* too big to allocate from stack */3425 mbuf = kmalloc(ioc_size, GFP_KERNEL);3426 if (NULL == mbuf)3427 return -ENOMEM;3428 parg = mbuf;3429 }3430 3431 err = video_get_user((void __user *)arg, parg, cmd,3432 orig_cmd, &always_copy);3433 if (err)3434 goto out;3435 }3436 3437 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);3438 if (err < 0)3439 goto out;3440 has_array_args = err;3441 3442 if (has_array_args) {3443 array_buf = kvmalloc(array_size, GFP_KERNEL);3444 err = -ENOMEM;3445 if (array_buf == NULL)3446 goto out;3447 if (in_compat_syscall())3448 err = v4l2_compat_get_array_args(file, array_buf,3449 user_ptr, array_size,3450 orig_cmd, parg);3451 else3452 err = copy_from_user(array_buf, user_ptr, array_size) ?3453 -EFAULT : 0;3454 if (err)3455 goto out;3456 *kernel_ptr = array_buf;3457 }3458 3459 /* Handles IOCTL */3460 err = func(file, cmd, parg);3461 if (err == -ENOTTY || err == -ENOIOCTLCMD) {3462 err = -ENOTTY;3463 goto out;3464 }3465 3466 if (err == 0) {3467 if (cmd == VIDIOC_DQBUF)3468 trace_v4l2_dqbuf(video_devdata(file)->minor, parg);3469 else if (cmd == VIDIOC_QBUF)3470 trace_v4l2_qbuf(video_devdata(file)->minor, parg);3471 }3472 3473 /*3474 * Some ioctls can return an error, but still have valid3475 * results that must be returned.3476 *3477 * FIXME: subdev IOCTLS are partially handled here and partially in3478 * v4l2-subdev.c and the 'always_copy' flag can only be set for IOCTLS3479 * defined here as part of the 'v4l2_ioctls' array. As3480 * VIDIOC_SUBDEV_[GS]_ROUTING needs to return results to applications3481 * even in case of failure, but it is not defined here as part of the3482 * 'v4l2_ioctls' array, insert an ad-hoc check to address that.3483 */3484 if (cmd == VIDIOC_SUBDEV_G_ROUTING || cmd == VIDIOC_SUBDEV_S_ROUTING)3485 always_copy = true;3486 3487 if (err < 0 && !always_copy)3488 goto out;3489 3490 if (has_array_args) {3491 *kernel_ptr = (void __force *)user_ptr;3492 if (in_compat_syscall()) {3493 int put_err;3494 3495 put_err = v4l2_compat_put_array_args(file, user_ptr,3496 array_buf,3497 array_size,3498 orig_cmd, parg);3499 if (put_err)3500 err = put_err;3501 } else if (copy_to_user(user_ptr, array_buf, array_size)) {3502 err = -EFAULT;3503 }3504 }3505 3506 if (video_put_user((void __user *)arg, parg, cmd, orig_cmd))3507 err = -EFAULT;3508out:3509 kvfree(array_buf);3510 kfree(mbuf);3511 return err;3512}3513 3514long video_ioctl2(struct file *file,3515 unsigned int cmd, unsigned long arg)3516{3517 return video_usercopy(file, cmd, arg, __video_do_ioctl);3518}3519EXPORT_SYMBOL(video_ioctl2);3520