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v4l2-ioctl.c
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linux-6.19.14/drivers/media/v4l2-core/v4l2-ioctl.c
1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * Video capture interface for Linux version 2 4 * 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 name 77 */ 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 handle 84 64 bit comparisons. So, on that architecture, with some gcc 85 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 the 110 '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 the 123 * '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 input 131 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 this 138 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 else 243 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 else 255 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(", (%d,%d)/%ux%u, field=%s, chromakey=0x%08x, global_alpha=0x%02x\n", 314 win->w.left, win->w.top, win->w.width, win->w.height, 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 else 375 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 else 387 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_DEBUG 460 "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 else 583 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 (%d,%d)/%ux%u, defrect (%d,%d)/%ux%u, pixelaspect %d/%d\n", 593 prt_names(p->type, v4l2_type_names), 594 p->bounds.left, p->bounds.top, 595 p->bounds.width, p->bounds.height, 596 p->defrect.left, p->defrect.top, 597 p->defrect.width, p->defrect.height, 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, crop=(%d,%d)/%ux%u\n", 606 prt_names(p->type, v4l2_type_names), 607 p->c.left, p->c.top, 608 p->c.width, p->c.height); 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, rect=(%d,%d)/%ux%u\n", 616 prt_names(p->type, v4l2_type_names), 617 p->target, p->flags, 618 p->r.left, p->r.top, p->r.width, p->r.height); 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 else 668 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 else 681 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 else 809 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 class 888 * when using extended controls. 889 * Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL 890 * 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 case V4L2_CTRL_WHICH_MIN_VAL: 897 case V4L2_CTRL_WHICH_MAX_VAL: 898 /* Default, minimum or maximum value cannot be changed */ 899 if (ioctl == VIDIOC_S_EXT_CTRLS || 900 ioctl == VIDIOC_TRY_EXT_CTRLS) { 901 c->error_idx = c->count; 902 return false; 903 } 904 return true; 905 case V4L2_CTRL_WHICH_CUR_VAL: 906 return true; 907 case V4L2_CTRL_WHICH_REQUEST_VAL: 908 c->error_idx = c->count; 909 return false; 910 } 911 912 /* Check that all controls are from the same control class. */ 913 for (i = 0; i < c->count; i++) { 914 if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) { 915 c->error_idx = ioctl == VIDIOC_TRY_EXT_CTRLS ? i : 916 c->count; 917 return false; 918 } 919 } 920 return true; 921} 922 923static int check_fmt(struct file *file, enum v4l2_buf_type type) 924{ 925 const u32 vid_caps = V4L2_CAP_VIDEO_CAPTURE | 926 V4L2_CAP_VIDEO_CAPTURE_MPLANE | 927 V4L2_CAP_VIDEO_OUTPUT | 928 V4L2_CAP_VIDEO_OUTPUT_MPLANE | 929 V4L2_CAP_VIDEO_M2M | V4L2_CAP_VIDEO_M2M_MPLANE; 930 const u32 meta_caps = V4L2_CAP_META_CAPTURE | 931 V4L2_CAP_META_OUTPUT; 932 struct video_device *vfd = video_devdata(file); 933 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 934 bool is_vid = vfd->vfl_type == VFL_TYPE_VIDEO && 935 (vfd->device_caps & vid_caps); 936 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI; 937 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; 938 bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; 939 bool is_meta = vfd->vfl_type == VFL_TYPE_VIDEO && 940 (vfd->device_caps & meta_caps); 941 bool is_rx = vfd->vfl_dir != VFL_DIR_TX; 942 bool is_tx = vfd->vfl_dir != VFL_DIR_RX; 943 944 if (ops == NULL) 945 return -EINVAL; 946 947 switch (type) { 948 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 949 if ((is_vid || is_tch) && is_rx && 950 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane)) 951 return 0; 952 break; 953 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 954 if ((is_vid || is_tch) && is_rx && ops->vidioc_g_fmt_vid_cap_mplane) 955 return 0; 956 break; 957 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 958 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay) 959 return 0; 960 break; 961 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 962 if (is_vid && is_tx && 963 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane)) 964 return 0; 965 break; 966 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 967 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane) 968 return 0; 969 break; 970 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 971 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay) 972 return 0; 973 break; 974 case V4L2_BUF_TYPE_VBI_CAPTURE: 975 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap) 976 return 0; 977 break; 978 case V4L2_BUF_TYPE_VBI_OUTPUT: 979 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out) 980 return 0; 981 break; 982 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 983 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap) 984 return 0; 985 break; 986 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 987 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out) 988 return 0; 989 break; 990 case V4L2_BUF_TYPE_SDR_CAPTURE: 991 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap) 992 return 0; 993 break; 994 case V4L2_BUF_TYPE_SDR_OUTPUT: 995 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out) 996 return 0; 997 break; 998 case V4L2_BUF_TYPE_META_CAPTURE: 999 if (is_meta && is_rx && ops->vidioc_g_fmt_meta_cap) 1000 return 0; 1001 break; 1002 case V4L2_BUF_TYPE_META_OUTPUT: 1003 if (is_meta && is_tx && ops->vidioc_g_fmt_meta_out) 1004 return 0; 1005 break; 1006 default: 1007 break; 1008 } 1009 return -EINVAL; 1010} 1011 1012static void v4l_sanitize_colorspace(u32 pixelformat, u32 *colorspace, 1013 u32 *encoding, u32 *quantization, 1014 u32 *xfer_func) 1015{ 1016 bool is_hsv = pixelformat == V4L2_PIX_FMT_HSV24 || 1017 pixelformat == V4L2_PIX_FMT_HSV32; 1018 1019 if (!v4l2_is_colorspace_valid(*colorspace)) { 1020 *colorspace = V4L2_COLORSPACE_DEFAULT; 1021 *encoding = V4L2_YCBCR_ENC_DEFAULT; 1022 *quantization = V4L2_QUANTIZATION_DEFAULT; 1023 *xfer_func = V4L2_XFER_FUNC_DEFAULT; 1024 } 1025 1026 if ((!is_hsv && !v4l2_is_ycbcr_enc_valid(*encoding)) || 1027 (is_hsv && !v4l2_is_hsv_enc_valid(*encoding))) 1028 *encoding = V4L2_YCBCR_ENC_DEFAULT; 1029 1030 if (!v4l2_is_quant_valid(*quantization)) 1031 *quantization = V4L2_QUANTIZATION_DEFAULT; 1032 1033 if (!v4l2_is_xfer_func_valid(*xfer_func)) 1034 *xfer_func = V4L2_XFER_FUNC_DEFAULT; 1035} 1036 1037static void v4l_sanitize_format(struct v4l2_format *fmt) 1038{ 1039 unsigned int offset; 1040 1041 /* Make sure num_planes is not bogus */ 1042 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE || 1043 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 1044 fmt->fmt.pix_mp.num_planes = min_t(u32, fmt->fmt.pix_mp.num_planes, 1045 VIDEO_MAX_PLANES); 1046 1047 /* 1048 * The v4l2_pix_format structure has been extended with fields that were 1049 * not previously required to be set to zero by applications. The priv 1050 * field, when set to a magic value, indicates that the extended fields 1051 * are valid. Otherwise they will contain undefined values. To simplify 1052 * the API towards drivers zero the extended fields and set the priv 1053 * field to the magic value when the extended pixel format structure 1054 * isn't used by applications. 1055 */ 1056 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 1057 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { 1058 if (fmt->fmt.pix.priv != V4L2_PIX_FMT_PRIV_MAGIC) { 1059 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1060 1061 offset = offsetof(struct v4l2_pix_format, priv) 1062 + sizeof(fmt->fmt.pix.priv); 1063 memset(((void *)&fmt->fmt.pix) + offset, 0, 1064 sizeof(fmt->fmt.pix) - offset); 1065 } 1066 } 1067 1068 /* Replace invalid colorspace values with defaults. */ 1069 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 1070 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { 1071 v4l_sanitize_colorspace(fmt->fmt.pix.pixelformat, 1072 &fmt->fmt.pix.colorspace, 1073 &fmt->fmt.pix.ycbcr_enc, 1074 &fmt->fmt.pix.quantization, 1075 &fmt->fmt.pix.xfer_func); 1076 } else if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE || 1077 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { 1078 u32 ycbcr_enc = fmt->fmt.pix_mp.ycbcr_enc; 1079 u32 quantization = fmt->fmt.pix_mp.quantization; 1080 u32 xfer_func = fmt->fmt.pix_mp.xfer_func; 1081 1082 v4l_sanitize_colorspace(fmt->fmt.pix_mp.pixelformat, 1083 &fmt->fmt.pix_mp.colorspace, &ycbcr_enc, 1084 &quantization, &xfer_func); 1085 1086 fmt->fmt.pix_mp.ycbcr_enc = ycbcr_enc; 1087 fmt->fmt.pix_mp.quantization = quantization; 1088 fmt->fmt.pix_mp.xfer_func = xfer_func; 1089 } 1090} 1091 1092static int v4l_querycap(const struct v4l2_ioctl_ops *ops, struct file *file, 1093 void *arg) 1094{ 1095 struct v4l2_capability *cap = (struct v4l2_capability *)arg; 1096 struct video_device *vfd = video_devdata(file); 1097 int ret; 1098 1099 cap->version = LINUX_VERSION_CODE; 1100 cap->device_caps = vfd->device_caps; 1101 cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS; 1102 1103 media_set_bus_info(cap->bus_info, sizeof(cap->bus_info), 1104 vfd->dev_parent); 1105 1106 ret = ops->vidioc_querycap(file, NULL, cap); 1107 1108 /* 1109 * Drivers must not change device_caps, so check for this and 1110 * warn if this happened. 1111 */ 1112 WARN_ON(cap->device_caps != vfd->device_caps); 1113 /* 1114 * Check that capabilities is a superset of 1115 * vfd->device_caps | V4L2_CAP_DEVICE_CAPS 1116 */ 1117 WARN_ON((cap->capabilities & 1118 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)) != 1119 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)); 1120 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT; 1121 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT; 1122 1123 return ret; 1124} 1125 1126static int v4l_g_input(const struct v4l2_ioctl_ops *ops, struct file *file, 1127 void *arg) 1128{ 1129 struct video_device *vfd = video_devdata(file); 1130 1131 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1132 *(int *)arg = 0; 1133 return 0; 1134 } 1135 1136 return ops->vidioc_g_input(file, NULL, arg); 1137} 1138 1139static int v4l_g_output(const struct v4l2_ioctl_ops *ops, struct file *file, 1140 void *arg) 1141{ 1142 struct video_device *vfd = video_devdata(file); 1143 1144 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1145 *(int *)arg = 0; 1146 return 0; 1147 } 1148 1149 return ops->vidioc_g_output(file, NULL, arg); 1150} 1151 1152static int v4l_s_input(const struct v4l2_ioctl_ops *ops, struct file *file, 1153 void *arg) 1154{ 1155 struct video_device *vfd = video_devdata(file); 1156 int ret; 1157 1158 ret = v4l_enable_media_source(vfd); 1159 if (ret) 1160 return ret; 1161 1162 if (vfd->device_caps & V4L2_CAP_IO_MC) 1163 return *(int *)arg ? -EINVAL : 0; 1164 1165 return ops->vidioc_s_input(file, NULL, *(unsigned int *)arg); 1166} 1167 1168static int v4l_s_output(const struct v4l2_ioctl_ops *ops, struct file *file, 1169 void *arg) 1170{ 1171 struct video_device *vfd = video_devdata(file); 1172 1173 if (vfd->device_caps & V4L2_CAP_IO_MC) 1174 return *(int *)arg ? -EINVAL : 0; 1175 1176 return ops->vidioc_s_output(file, NULL, *(unsigned int *)arg); 1177} 1178 1179static int v4l_g_priority(const struct v4l2_ioctl_ops *ops, struct file *file, 1180 void *arg) 1181{ 1182 struct video_device *vfd; 1183 u32 *p = arg; 1184 1185 vfd = video_devdata(file); 1186 *p = v4l2_prio_max(vfd->prio); 1187 return 0; 1188} 1189 1190static int v4l_s_priority(const struct v4l2_ioctl_ops *ops, struct file *file, 1191 void *arg) 1192{ 1193 struct video_device *vfd; 1194 struct v4l2_fh *vfh; 1195 u32 *p = arg; 1196 1197 vfd = video_devdata(file); 1198 vfh = file_to_v4l2_fh(file); 1199 return v4l2_prio_change(vfd->prio, &vfh->prio, *p); 1200} 1201 1202static int v4l_enuminput(const struct v4l2_ioctl_ops *ops, struct file *file, 1203 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 the 1211 * driver. If the driver doesn't support these 1212 * 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, NULL, p); 1226} 1227 1228static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops, struct file *file, 1229 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 the 1237 * driver. If the driver doesn't support these 1238 * 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, NULL, 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 descriptions 1262 * should be aligned so it is easy to see which descriptions will be 1263 * 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_Y16I: descr = "Interleaved 16-bit Greyscale"; break; 1331 case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break; 1332 case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break; 1333 case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break; 1334 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break; 1335 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break; 1336 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break; 1337 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break; 1338 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break; 1339 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break; 1340 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break; 1341 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break; 1342 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break; 1343 case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break; 1344 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break; 1345 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break; 1346 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break; 1347 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break; 1348 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break; 1349 case V4L2_PIX_FMT_YUV24: descr = "24-bit YUV 4:4:4 8-8-8"; break; 1350 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break; 1351 case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break; 1352 case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break; 1353 case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break; 1354 case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break; 1355 case V4L2_PIX_FMT_YUVA32: descr = "32-bit YUVA 8-8-8-8"; break; 1356 case V4L2_PIX_FMT_YUVX32: descr = "32-bit YUVX 8-8-8-8"; break; 1357 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break; 1358 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break; 1359 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break; 1360 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break; 1361 case V4L2_PIX_FMT_YUV48_12: descr = "12-bit YUV 4:4:4 Packed"; break; 1362 case V4L2_PIX_FMT_NV12: descr = "Y/UV 4:2:0"; break; 1363 case V4L2_PIX_FMT_NV21: descr = "Y/VU 4:2:0"; break; 1364 case V4L2_PIX_FMT_NV15: descr = "10-bit Y/UV 4:2:0 (Packed)"; break; 1365 case V4L2_PIX_FMT_NV16: descr = "Y/UV 4:2:2"; break; 1366 case V4L2_PIX_FMT_NV61: descr = "Y/VU 4:2:2"; break; 1367 case V4L2_PIX_FMT_NV20: descr = "10-bit Y/UV 4:2:2 (Packed)"; break; 1368 case V4L2_PIX_FMT_NV24: descr = "Y/UV 4:4:4"; break; 1369 case V4L2_PIX_FMT_NV42: descr = "Y/VU 4:4:4"; break; 1370 case V4L2_PIX_FMT_P010: descr = "10-bit Y/UV 4:2:0"; break; 1371 case V4L2_PIX_FMT_P012: descr = "12-bit Y/UV 4:2:0"; break; 1372 case V4L2_PIX_FMT_NV12_4L4: descr = "Y/UV 4:2:0 (4x4 Linear)"; break; 1373 case V4L2_PIX_FMT_NV12_16L16: descr = "Y/UV 4:2:0 (16x16 Linear)"; break; 1374 case V4L2_PIX_FMT_NV12_32L32: descr = "Y/UV 4:2:0 (32x32 Linear)"; break; 1375 case V4L2_PIX_FMT_NV15_4L4: descr = "10-bit Y/UV 4:2:0 (4x4 Linear)"; break; 1376 case V4L2_PIX_FMT_P010_4L4: descr = "10-bit Y/UV 4:2:0 (4x4 Linear)"; break; 1377 case V4L2_PIX_FMT_NV12M: descr = "Y/UV 4:2:0 (N-C)"; break; 1378 case V4L2_PIX_FMT_NV21M: descr = "Y/VU 4:2:0 (N-C)"; break; 1379 case V4L2_PIX_FMT_NV16M: descr = "Y/UV 4:2:2 (N-C)"; break; 1380 case V4L2_PIX_FMT_NV61M: descr = "Y/VU 4:2:2 (N-C)"; break; 1381 case V4L2_PIX_FMT_NV12MT: descr = "Y/UV 4:2:0 (64x32 MB, N-C)"; break; 1382 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/UV 4:2:0 (16x16 MB, N-C)"; break; 1383 case V4L2_PIX_FMT_P012M: descr = "12-bit Y/UV 4:2:0 (N-C)"; break; 1384 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break; 1385 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break; 1386 case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break; 1387 case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break; 1388 case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break; 1389 case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break; 1390 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break; 1391 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break; 1392 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break; 1393 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break; 1394 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break; 1395 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break; 1396 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break; 1397 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break; 1398 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break; 1399 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break; 1400 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break; 1401 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break; 1402 case V4L2_PIX_FMT_IPU3_SBGGR10: descr = "10-bit bayer BGGR IPU3 Packed"; break; 1403 case V4L2_PIX_FMT_IPU3_SGBRG10: descr = "10-bit bayer GBRG IPU3 Packed"; break; 1404 case V4L2_PIX_FMT_IPU3_SGRBG10: descr = "10-bit bayer GRBG IPU3 Packed"; break; 1405 case V4L2_PIX_FMT_IPU3_SRGGB10: descr = "10-bit bayer RGGB IPU3 Packed"; break; 1406 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break; 1407 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break; 1408 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break; 1409 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break; 1410 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break; 1411 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break; 1412 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break; 1413 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break; 1414 case V4L2_PIX_FMT_RAW_CRU10: descr = "10-bit Raw CRU Packed"; break; 1415 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break; 1416 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break; 1417 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break; 1418 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break; 1419 case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break; 1420 case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break; 1421 case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break; 1422 case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break; 1423 case V4L2_PIX_FMT_RAW_CRU12: descr = "12-bit Raw CRU Packed"; break; 1424 case V4L2_PIX_FMT_SBGGR14: descr = "14-bit Bayer BGBG/GRGR"; break; 1425 case V4L2_PIX_FMT_SGBRG14: descr = "14-bit Bayer GBGB/RGRG"; break; 1426 case V4L2_PIX_FMT_SGRBG14: descr = "14-bit Bayer GRGR/BGBG"; break; 1427 case V4L2_PIX_FMT_SRGGB14: descr = "14-bit Bayer RGRG/GBGB"; break; 1428 case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break; 1429 case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break; 1430 case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break; 1431 case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break; 1432 case V4L2_PIX_FMT_RAW_CRU14: descr = "14-bit Raw CRU Packed"; break; 1433 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break; 1434 case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break; 1435 case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break; 1436 case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break; 1437 case V4L2_PIX_FMT_RAW_CRU20: descr = "14-bit Raw CRU Packed"; break; 1438 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break; 1439 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break; 1440 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break; 1441 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break; 1442 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break; 1443 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break; 1444 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break; 1445 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break; 1446 case V4L2_PIX_FMT_MM21: descr = "Mediatek 8-bit Block Format"; break; 1447 case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break; 1448 case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break; 1449 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break; 1450 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break; 1451 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break; 1452 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break; 1453 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break; 1454 case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break; 1455 case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break; 1456 case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break; 1457 case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit Signed Deltas"; break; 1458 case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit Signed Deltas"; break; 1459 case V4L2_TCH_FMT_TU16: descr = "16-bit Unsigned Touch Data"; break; 1460 case V4L2_TCH_FMT_TU08: descr = "8-bit Unsigned Touch Data"; break; 1461 case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break; 1462 case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break; 1463 case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break; 1464 case V4L2_META_FMT_UVC_MSXU_1_5: descr = "UVC MSXU Metadata"; break; 1465 case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break; 1466 case V4L2_META_FMT_VIVID: descr = "Vivid Metadata"; break; 1467 case V4L2_META_FMT_RK_ISP1_PARAMS: descr = "Rockchip ISP1 3A Parameters"; break; 1468 case V4L2_META_FMT_RK_ISP1_STAT_3A: descr = "Rockchip ISP1 3A Statistics"; break; 1469 case V4L2_META_FMT_RK_ISP1_EXT_PARAMS: descr = "Rockchip ISP1 Ext 3A Params"; break; 1470 case V4L2_META_FMT_C3ISP_PARAMS: descr = "Amlogic C3 ISP Parameters"; break; 1471 case V4L2_META_FMT_C3ISP_STATS: descr = "Amlogic C3 ISP Statistics"; break; 1472 case V4L2_META_FMT_MALI_C55_PARAMS: descr = "ARM Mali-C55 ISP Parameters"; break; 1473 case V4L2_META_FMT_MALI_C55_STATS: descr = "ARM Mali-C55 ISP 3A Statistics"; break; 1474 case V4L2_PIX_FMT_NV12_8L128: descr = "NV12 (8x128 Linear)"; break; 1475 case V4L2_PIX_FMT_NV12M_8L128: descr = "NV12M (8x128 Linear)"; break; 1476 case V4L2_PIX_FMT_NV12_10BE_8L128: descr = "10-bit NV12 (8x128 Linear, BE)"; break; 1477 case V4L2_PIX_FMT_NV12M_10BE_8L128: descr = "10-bit NV12M (8x128 Linear, BE)"; break; 1478 case V4L2_PIX_FMT_Y210: descr = "10-bit YUYV Packed"; break; 1479 case V4L2_PIX_FMT_Y212: descr = "12-bit YUYV Packed"; break; 1480 case V4L2_PIX_FMT_Y216: descr = "16-bit YUYV Packed"; break; 1481 case V4L2_META_FMT_RPI_BE_CFG: descr = "RPi PiSP BE Config format"; break; 1482 case V4L2_META_FMT_RPI_FE_CFG: descr = "RPi PiSP FE Config format"; break; 1483 case V4L2_META_FMT_RPI_FE_STATS: descr = "RPi PiSP FE Statistics format"; break; 1484 case V4L2_META_FMT_GENERIC_8: descr = "8-bit Generic Metadata"; break; 1485 case V4L2_META_FMT_GENERIC_CSI2_10: descr = "8-bit Generic Meta, 10b CSI-2"; break; 1486 case V4L2_META_FMT_GENERIC_CSI2_12: descr = "8-bit Generic Meta, 12b CSI-2"; break; 1487 case V4L2_META_FMT_GENERIC_CSI2_14: descr = "8-bit Generic Meta, 14b CSI-2"; break; 1488 case V4L2_META_FMT_GENERIC_CSI2_16: descr = "8-bit Generic Meta, 16b CSI-2"; break; 1489 case V4L2_META_FMT_GENERIC_CSI2_20: descr = "8-bit Generic Meta, 20b CSI-2"; break; 1490 case V4L2_META_FMT_GENERIC_CSI2_24: descr = "8-bit Generic Meta, 24b CSI-2"; break; 1491 1492 default: 1493 /* Compressed formats */ 1494 flags = V4L2_FMT_FLAG_COMPRESSED; 1495 switch (fmt->pixelformat) { 1496 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1497 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break; 1498 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break; 1499 case V4L2_PIX_FMT_DV: descr = "1394"; break; 1500 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break; 1501 case V4L2_PIX_FMT_H264: descr = "H.264"; break; 1502 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break; 1503 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break; 1504 case V4L2_PIX_FMT_H264_SLICE: descr = "H.264 Parsed Slice Data"; break; 1505 case V4L2_PIX_FMT_H263: descr = "H.263"; break; 1506 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break; 1507 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break; 1508 case V4L2_PIX_FMT_MPEG2_SLICE: descr = "MPEG-2 Parsed Slice Data"; break; 1509 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 Part 2 ES"; break; 1510 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break; 1511 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break; 1512 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break; 1513 case V4L2_PIX_FMT_VP8: descr = "VP8"; break; 1514 case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break; 1515 case V4L2_PIX_FMT_VP9: descr = "VP9"; break; 1516 case V4L2_PIX_FMT_VP9_FRAME: descr = "VP9 Frame"; break; 1517 case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */ 1518 case V4L2_PIX_FMT_HEVC_SLICE: descr = "HEVC Parsed Slice Data"; break; 1519 case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */ 1520 case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */ 1521 case V4L2_PIX_FMT_SPK: descr = "Sorenson Spark"; break; 1522 case V4L2_PIX_FMT_RV30: descr = "RealVideo 8"; break; 1523 case V4L2_PIX_FMT_RV40: descr = "RealVideo 9 & 10"; break; 1524 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break; 1525 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break; 1526 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break; 1527 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break; 1528 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break; 1529 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break; 1530 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break; 1531 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break; 1532 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break; 1533 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break; 1534 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break; 1535 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break; 1536 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break; 1537 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break; 1538 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break; 1539 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break; 1540 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break; 1541 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break; 1542 case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break; 1543 case V4L2_PIX_FMT_QC08C: descr = "QCOM Compressed 8-bit Format"; break; 1544 case V4L2_PIX_FMT_QC10C: descr = "QCOM Compressed 10-bit Format"; break; 1545 case V4L2_PIX_FMT_AJPG: descr = "Aspeed JPEG"; break; 1546 case V4L2_PIX_FMT_AV1_FRAME: descr = "AV1 Frame"; break; 1547 case V4L2_PIX_FMT_MT2110T: descr = "Mediatek 10bit Tile Mode"; break; 1548 case V4L2_PIX_FMT_MT2110R: descr = "Mediatek 10bit Raster Mode"; break; 1549 case V4L2_PIX_FMT_HEXTILE: descr = "Hextile Compressed Format"; break; 1550 case V4L2_PIX_FMT_PISP_COMP1_RGGB: descr = "PiSP 8b RGRG/GBGB mode1 compr"; break; 1551 case V4L2_PIX_FMT_PISP_COMP1_GRBG: descr = "PiSP 8b GRGR/BGBG mode1 compr"; break; 1552 case V4L2_PIX_FMT_PISP_COMP1_GBRG: descr = "PiSP 8b GBGB/RGRG mode1 compr"; break; 1553 case V4L2_PIX_FMT_PISP_COMP1_BGGR: descr = "PiSP 8b BGBG/GRGR mode1 compr"; break; 1554 case V4L2_PIX_FMT_PISP_COMP1_MONO: descr = "PiSP 8b monochrome mode1 compr"; break; 1555 case V4L2_PIX_FMT_PISP_COMP2_RGGB: descr = "PiSP 8b RGRG/GBGB mode2 compr"; break; 1556 case V4L2_PIX_FMT_PISP_COMP2_GRBG: descr = "PiSP 8b GRGR/BGBG mode2 compr"; break; 1557 case V4L2_PIX_FMT_PISP_COMP2_GBRG: descr = "PiSP 8b GBGB/RGRG mode2 compr"; break; 1558 case V4L2_PIX_FMT_PISP_COMP2_BGGR: descr = "PiSP 8b BGBG/GRGR mode2 compr"; break; 1559 case V4L2_PIX_FMT_PISP_COMP2_MONO: descr = "PiSP 8b monochrome mode2 compr"; break; 1560 default: 1561 if (fmt->description[0]) 1562 return; 1563 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat); 1564 flags = 0; 1565 snprintf(fmt->description, sz, "%p4cc", 1566 &fmt->pixelformat); 1567 break; 1568 } 1569 } 1570 1571 if (fmt->type == V4L2_BUF_TYPE_META_CAPTURE) { 1572 switch (fmt->pixelformat) { 1573 case V4L2_META_FMT_GENERIC_8: 1574 case V4L2_META_FMT_GENERIC_CSI2_10: 1575 case V4L2_META_FMT_GENERIC_CSI2_12: 1576 case V4L2_META_FMT_GENERIC_CSI2_14: 1577 case V4L2_META_FMT_GENERIC_CSI2_16: 1578 case V4L2_META_FMT_GENERIC_CSI2_20: 1579 case V4L2_META_FMT_GENERIC_CSI2_24: 1580 fmt->flags |= V4L2_FMT_FLAG_META_LINE_BASED; 1581 break; 1582 default: 1583 fmt->flags &= ~V4L2_FMT_FLAG_META_LINE_BASED; 1584 } 1585 } 1586 1587 if (descr) 1588 WARN_ON(strscpy(fmt->description, descr, sz) < 0); 1589 fmt->flags |= flags; 1590} 1591 1592static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops, struct file *file, 1593 void *arg) 1594{ 1595 struct video_device *vdev = video_devdata(file); 1596 struct v4l2_fmtdesc *p = arg; 1597 int ret = check_fmt(file, p->type); 1598 u32 mbus_code; 1599 u32 cap_mask; 1600 1601 if (ret) 1602 return ret; 1603 ret = -EINVAL; 1604 1605 if (!(vdev->device_caps & V4L2_CAP_IO_MC)) 1606 p->mbus_code = 0; 1607 1608 mbus_code = p->mbus_code; 1609 memset_after(p, 0, type); 1610 p->mbus_code = mbus_code; 1611 1612 switch (p->type) { 1613 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1614 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1615 cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE | 1616 V4L2_CAP_VIDEO_M2M_MPLANE; 1617 if (!!(vdev->device_caps & cap_mask) != 1618 (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) 1619 break; 1620 1621 if (unlikely(!ops->vidioc_enum_fmt_vid_cap)) 1622 break; 1623 ret = ops->vidioc_enum_fmt_vid_cap(file, NULL, arg); 1624 break; 1625 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1626 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay)) 1627 break; 1628 ret = ops->vidioc_enum_fmt_vid_overlay(file, NULL, arg); 1629 break; 1630 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1631 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1632 cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE | 1633 V4L2_CAP_VIDEO_M2M_MPLANE; 1634 if (!!(vdev->device_caps & cap_mask) != 1635 (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)) 1636 break; 1637 1638 if (unlikely(!ops->vidioc_enum_fmt_vid_out)) 1639 break; 1640 ret = ops->vidioc_enum_fmt_vid_out(file, NULL, arg); 1641 break; 1642 case V4L2_BUF_TYPE_SDR_CAPTURE: 1643 if (unlikely(!ops->vidioc_enum_fmt_sdr_cap)) 1644 break; 1645 ret = ops->vidioc_enum_fmt_sdr_cap(file, NULL, arg); 1646 break; 1647 case V4L2_BUF_TYPE_SDR_OUTPUT: 1648 if (unlikely(!ops->vidioc_enum_fmt_sdr_out)) 1649 break; 1650 ret = ops->vidioc_enum_fmt_sdr_out(file, NULL, arg); 1651 break; 1652 case V4L2_BUF_TYPE_META_CAPTURE: 1653 if (unlikely(!ops->vidioc_enum_fmt_meta_cap)) 1654 break; 1655 ret = ops->vidioc_enum_fmt_meta_cap(file, NULL, arg); 1656 break; 1657 case V4L2_BUF_TYPE_META_OUTPUT: 1658 if (unlikely(!ops->vidioc_enum_fmt_meta_out)) 1659 break; 1660 ret = ops->vidioc_enum_fmt_meta_out(file, NULL, arg); 1661 break; 1662 } 1663 if (ret == 0) 1664 v4l_fill_fmtdesc(p); 1665 return ret; 1666} 1667 1668static void v4l_pix_format_touch(struct v4l2_pix_format *p) 1669{ 1670 /* 1671 * The v4l2_pix_format structure contains fields that make no sense for 1672 * touch. Set them to default values in this case. 1673 */ 1674 1675 p->field = V4L2_FIELD_NONE; 1676 p->colorspace = V4L2_COLORSPACE_RAW; 1677 p->flags = 0; 1678 p->ycbcr_enc = 0; 1679 p->quantization = 0; 1680 p->xfer_func = 0; 1681} 1682 1683static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, struct file *file, 1684 void *arg) 1685{ 1686 struct v4l2_format *p = arg; 1687 struct video_device *vfd = video_devdata(file); 1688 int ret = check_fmt(file, p->type); 1689 1690 if (ret) 1691 return ret; 1692 1693 memset(&p->fmt, 0, sizeof(p->fmt)); 1694 1695 switch (p->type) { 1696 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1697 if (unlikely(!ops->vidioc_g_fmt_vid_cap)) 1698 break; 1699 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1700 ret = ops->vidioc_g_fmt_vid_cap(file, NULL, arg); 1701 /* just in case the driver zeroed it again */ 1702 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1703 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1704 v4l_pix_format_touch(&p->fmt.pix); 1705 return ret; 1706 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1707 return ops->vidioc_g_fmt_vid_cap_mplane(file, NULL, arg); 1708 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1709 return ops->vidioc_g_fmt_vid_overlay(file, NULL, arg); 1710 case V4L2_BUF_TYPE_VBI_CAPTURE: 1711 return ops->vidioc_g_fmt_vbi_cap(file, NULL, arg); 1712 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1713 return ops->vidioc_g_fmt_sliced_vbi_cap(file, NULL, arg); 1714 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1715 if (unlikely(!ops->vidioc_g_fmt_vid_out)) 1716 break; 1717 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1718 ret = ops->vidioc_g_fmt_vid_out(file, NULL, arg); 1719 /* just in case the driver zeroed it again */ 1720 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1721 return ret; 1722 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1723 return ops->vidioc_g_fmt_vid_out_mplane(file, NULL, arg); 1724 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1725 return ops->vidioc_g_fmt_vid_out_overlay(file, NULL, arg); 1726 case V4L2_BUF_TYPE_VBI_OUTPUT: 1727 return ops->vidioc_g_fmt_vbi_out(file, NULL, arg); 1728 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1729 return ops->vidioc_g_fmt_sliced_vbi_out(file, NULL, arg); 1730 case V4L2_BUF_TYPE_SDR_CAPTURE: 1731 return ops->vidioc_g_fmt_sdr_cap(file, NULL, arg); 1732 case V4L2_BUF_TYPE_SDR_OUTPUT: 1733 return ops->vidioc_g_fmt_sdr_out(file, NULL, arg); 1734 case V4L2_BUF_TYPE_META_CAPTURE: 1735 return ops->vidioc_g_fmt_meta_cap(file, NULL, arg); 1736 case V4L2_BUF_TYPE_META_OUTPUT: 1737 return ops->vidioc_g_fmt_meta_out(file, NULL, arg); 1738 } 1739 return -EINVAL; 1740} 1741 1742static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, struct file *file, 1743 void *arg) 1744{ 1745 struct v4l2_format *p = arg; 1746 struct video_device *vfd = video_devdata(file); 1747 int ret = check_fmt(file, p->type); 1748 unsigned int i; 1749 1750 if (ret) 1751 return ret; 1752 1753 ret = v4l_enable_media_source(vfd); 1754 if (ret) 1755 return ret; 1756 v4l_sanitize_format(p); 1757 1758 switch (p->type) { 1759 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1760 if (unlikely(!ops->vidioc_s_fmt_vid_cap)) 1761 break; 1762 memset_after(p, 0, fmt.pix); 1763 ret = ops->vidioc_s_fmt_vid_cap(file, NULL, arg); 1764 /* just in case the driver zeroed it again */ 1765 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1766 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1767 v4l_pix_format_touch(&p->fmt.pix); 1768 return ret; 1769 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1770 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane)) 1771 break; 1772 memset_after(p, 0, fmt.pix_mp.xfer_func); 1773 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1774 memset_after(&p->fmt.pix_mp.plane_fmt[i], 1775 0, bytesperline); 1776 return ops->vidioc_s_fmt_vid_cap_mplane(file, NULL, arg); 1777 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1778 if (unlikely(!ops->vidioc_s_fmt_vid_overlay)) 1779 break; 1780 memset_after(p, 0, fmt.win); 1781 p->fmt.win.clips = NULL; 1782 p->fmt.win.clipcount = 0; 1783 p->fmt.win.bitmap = NULL; 1784 return ops->vidioc_s_fmt_vid_overlay(file, NULL, arg); 1785 case V4L2_BUF_TYPE_VBI_CAPTURE: 1786 if (unlikely(!ops->vidioc_s_fmt_vbi_cap)) 1787 break; 1788 memset_after(p, 0, fmt.vbi.flags); 1789 return ops->vidioc_s_fmt_vbi_cap(file, NULL, arg); 1790 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1791 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap)) 1792 break; 1793 memset_after(p, 0, fmt.sliced.io_size); 1794 return ops->vidioc_s_fmt_sliced_vbi_cap(file, NULL, arg); 1795 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1796 if (unlikely(!ops->vidioc_s_fmt_vid_out)) 1797 break; 1798 memset_after(p, 0, fmt.pix); 1799 ret = ops->vidioc_s_fmt_vid_out(file, NULL, arg); 1800 /* just in case the driver zeroed it again */ 1801 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1802 return ret; 1803 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1804 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane)) 1805 break; 1806 memset_after(p, 0, fmt.pix_mp.xfer_func); 1807 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1808 memset_after(&p->fmt.pix_mp.plane_fmt[i], 1809 0, bytesperline); 1810 return ops->vidioc_s_fmt_vid_out_mplane(file, NULL, arg); 1811 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1812 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay)) 1813 break; 1814 memset_after(p, 0, fmt.win); 1815 p->fmt.win.clips = NULL; 1816 p->fmt.win.clipcount = 0; 1817 p->fmt.win.bitmap = NULL; 1818 return ops->vidioc_s_fmt_vid_out_overlay(file, NULL, arg); 1819 case V4L2_BUF_TYPE_VBI_OUTPUT: 1820 if (unlikely(!ops->vidioc_s_fmt_vbi_out)) 1821 break; 1822 memset_after(p, 0, fmt.vbi.flags); 1823 return ops->vidioc_s_fmt_vbi_out(file, NULL, arg); 1824 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1825 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out)) 1826 break; 1827 memset_after(p, 0, fmt.sliced.io_size); 1828 return ops->vidioc_s_fmt_sliced_vbi_out(file, NULL, arg); 1829 case V4L2_BUF_TYPE_SDR_CAPTURE: 1830 if (unlikely(!ops->vidioc_s_fmt_sdr_cap)) 1831 break; 1832 memset_after(p, 0, fmt.sdr.buffersize); 1833 return ops->vidioc_s_fmt_sdr_cap(file, NULL, arg); 1834 case V4L2_BUF_TYPE_SDR_OUTPUT: 1835 if (unlikely(!ops->vidioc_s_fmt_sdr_out)) 1836 break; 1837 memset_after(p, 0, fmt.sdr.buffersize); 1838 return ops->vidioc_s_fmt_sdr_out(file, NULL, arg); 1839 case V4L2_BUF_TYPE_META_CAPTURE: 1840 if (unlikely(!ops->vidioc_s_fmt_meta_cap)) 1841 break; 1842 memset_after(p, 0, fmt.meta); 1843 return ops->vidioc_s_fmt_meta_cap(file, NULL, arg); 1844 case V4L2_BUF_TYPE_META_OUTPUT: 1845 if (unlikely(!ops->vidioc_s_fmt_meta_out)) 1846 break; 1847 memset_after(p, 0, fmt.meta); 1848 return ops->vidioc_s_fmt_meta_out(file, NULL, arg); 1849 } 1850 return -EINVAL; 1851} 1852 1853static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, struct file *file, 1854 void *arg) 1855{ 1856 struct v4l2_format *p = arg; 1857 struct video_device *vfd = video_devdata(file); 1858 int ret = check_fmt(file, p->type); 1859 unsigned int i; 1860 1861 if (ret) 1862 return ret; 1863 1864 v4l_sanitize_format(p); 1865 1866 switch (p->type) { 1867 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1868 if (unlikely(!ops->vidioc_try_fmt_vid_cap)) 1869 break; 1870 memset_after(p, 0, fmt.pix); 1871 ret = ops->vidioc_try_fmt_vid_cap(file, NULL, arg); 1872 /* just in case the driver zeroed it again */ 1873 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1874 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1875 v4l_pix_format_touch(&p->fmt.pix); 1876 return ret; 1877 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1878 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane)) 1879 break; 1880 memset_after(p, 0, fmt.pix_mp.xfer_func); 1881 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1882 memset_after(&p->fmt.pix_mp.plane_fmt[i], 1883 0, bytesperline); 1884 return ops->vidioc_try_fmt_vid_cap_mplane(file, NULL, arg); 1885 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1886 if (unlikely(!ops->vidioc_try_fmt_vid_overlay)) 1887 break; 1888 memset_after(p, 0, fmt.win); 1889 p->fmt.win.clips = NULL; 1890 p->fmt.win.clipcount = 0; 1891 p->fmt.win.bitmap = NULL; 1892 return ops->vidioc_try_fmt_vid_overlay(file, NULL, arg); 1893 case V4L2_BUF_TYPE_VBI_CAPTURE: 1894 if (unlikely(!ops->vidioc_try_fmt_vbi_cap)) 1895 break; 1896 memset_after(p, 0, fmt.vbi.flags); 1897 return ops->vidioc_try_fmt_vbi_cap(file, NULL, arg); 1898 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1899 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap)) 1900 break; 1901 memset_after(p, 0, fmt.sliced.io_size); 1902 return ops->vidioc_try_fmt_sliced_vbi_cap(file, NULL, arg); 1903 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1904 if (unlikely(!ops->vidioc_try_fmt_vid_out)) 1905 break; 1906 memset_after(p, 0, fmt.pix); 1907 ret = ops->vidioc_try_fmt_vid_out(file, NULL, arg); 1908 /* just in case the driver zeroed it again */ 1909 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1910 return ret; 1911 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1912 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane)) 1913 break; 1914 memset_after(p, 0, fmt.pix_mp.xfer_func); 1915 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1916 memset_after(&p->fmt.pix_mp.plane_fmt[i], 1917 0, bytesperline); 1918 return ops->vidioc_try_fmt_vid_out_mplane(file, NULL, arg); 1919 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1920 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay)) 1921 break; 1922 memset_after(p, 0, fmt.win); 1923 p->fmt.win.clips = NULL; 1924 p->fmt.win.clipcount = 0; 1925 p->fmt.win.bitmap = NULL; 1926 return ops->vidioc_try_fmt_vid_out_overlay(file, NULL, arg); 1927 case V4L2_BUF_TYPE_VBI_OUTPUT: 1928 if (unlikely(!ops->vidioc_try_fmt_vbi_out)) 1929 break; 1930 memset_after(p, 0, fmt.vbi.flags); 1931 return ops->vidioc_try_fmt_vbi_out(file, NULL, arg); 1932 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1933 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out)) 1934 break; 1935 memset_after(p, 0, fmt.sliced.io_size); 1936 return ops->vidioc_try_fmt_sliced_vbi_out(file, NULL, arg); 1937 case V4L2_BUF_TYPE_SDR_CAPTURE: 1938 if (unlikely(!ops->vidioc_try_fmt_sdr_cap)) 1939 break; 1940 memset_after(p, 0, fmt.sdr.buffersize); 1941 return ops->vidioc_try_fmt_sdr_cap(file, NULL, arg); 1942 case V4L2_BUF_TYPE_SDR_OUTPUT: 1943 if (unlikely(!ops->vidioc_try_fmt_sdr_out)) 1944 break; 1945 memset_after(p, 0, fmt.sdr.buffersize); 1946 return ops->vidioc_try_fmt_sdr_out(file, NULL, arg); 1947 case V4L2_BUF_TYPE_META_CAPTURE: 1948 if (unlikely(!ops->vidioc_try_fmt_meta_cap)) 1949 break; 1950 memset_after(p, 0, fmt.meta); 1951 return ops->vidioc_try_fmt_meta_cap(file, NULL, arg); 1952 case V4L2_BUF_TYPE_META_OUTPUT: 1953 if (unlikely(!ops->vidioc_try_fmt_meta_out)) 1954 break; 1955 memset_after(p, 0, fmt.meta); 1956 return ops->vidioc_try_fmt_meta_out(file, NULL, arg); 1957 } 1958 return -EINVAL; 1959} 1960 1961static int v4l_streamon(const struct v4l2_ioctl_ops *ops, struct file *file, 1962 void *arg) 1963{ 1964 return ops->vidioc_streamon(file, NULL, *(unsigned int *)arg); 1965} 1966 1967static int v4l_streamoff(const struct v4l2_ioctl_ops *ops, struct file *file, 1968 void *arg) 1969{ 1970 return ops->vidioc_streamoff(file, NULL, *(unsigned int *)arg); 1971} 1972 1973static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops, struct file *file, 1974 void *arg) 1975{ 1976 struct video_device *vfd = video_devdata(file); 1977 struct v4l2_tuner *p = arg; 1978 int err; 1979 1980 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1981 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1982 err = ops->vidioc_g_tuner(file, NULL, p); 1983 if (!err) 1984 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1985 return err; 1986} 1987 1988static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops, struct file *file, 1989 void *arg) 1990{ 1991 struct video_device *vfd = video_devdata(file); 1992 struct v4l2_tuner *p = arg; 1993 int ret; 1994 1995 ret = v4l_enable_media_source(vfd); 1996 if (ret) 1997 return ret; 1998 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1999 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2000 return ops->vidioc_s_tuner(file, NULL, p); 2001} 2002 2003static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops, 2004 struct file *file, void *arg) 2005{ 2006 struct video_device *vfd = video_devdata(file); 2007 struct v4l2_modulator *p = arg; 2008 int err; 2009 2010 if (vfd->vfl_type == VFL_TYPE_RADIO) 2011 p->type = V4L2_TUNER_RADIO; 2012 2013 err = ops->vidioc_g_modulator(file, NULL, p); 2014 if (!err) 2015 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 2016 return err; 2017} 2018 2019static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops, 2020 struct file *file, void *arg) 2021{ 2022 struct video_device *vfd = video_devdata(file); 2023 struct v4l2_modulator *p = arg; 2024 2025 if (vfd->vfl_type == VFL_TYPE_RADIO) 2026 p->type = V4L2_TUNER_RADIO; 2027 2028 return ops->vidioc_s_modulator(file, NULL, p); 2029} 2030 2031static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops, 2032 struct file *file, void *arg) 2033{ 2034 struct video_device *vfd = video_devdata(file); 2035 struct v4l2_frequency *p = arg; 2036 2037 if (vfd->vfl_type == VFL_TYPE_SDR) 2038 p->type = V4L2_TUNER_SDR; 2039 else 2040 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2041 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2042 return ops->vidioc_g_frequency(file, NULL, p); 2043} 2044 2045static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops, 2046 struct file *file, void *arg) 2047{ 2048 struct video_device *vfd = video_devdata(file); 2049 const struct v4l2_frequency *p = arg; 2050 enum v4l2_tuner_type type; 2051 int ret; 2052 2053 ret = v4l_enable_media_source(vfd); 2054 if (ret) 2055 return ret; 2056 if (vfd->vfl_type == VFL_TYPE_SDR) { 2057 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 2058 return -EINVAL; 2059 } else { 2060 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2061 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2062 if (type != p->type) 2063 return -EINVAL; 2064 } 2065 return ops->vidioc_s_frequency(file, NULL, p); 2066} 2067 2068static int v4l_enumstd(const struct v4l2_ioctl_ops *ops, struct file *file, 2069 void *arg) 2070{ 2071 struct video_device *vfd = video_devdata(file); 2072 struct v4l2_standard *p = arg; 2073 2074 return v4l_video_std_enumstd(p, vfd->tvnorms); 2075} 2076 2077static int v4l_s_std(const struct v4l2_ioctl_ops *ops, struct file *file, 2078 void *arg) 2079{ 2080 struct video_device *vfd = video_devdata(file); 2081 v4l2_std_id id = *(v4l2_std_id *)arg, norm; 2082 int ret; 2083 2084 ret = v4l_enable_media_source(vfd); 2085 if (ret) 2086 return ret; 2087 norm = id & vfd->tvnorms; 2088 if (vfd->tvnorms && !norm) /* Check if std is supported */ 2089 return -EINVAL; 2090 2091 /* Calls the specific handler */ 2092 return ops->vidioc_s_std(file, NULL, norm); 2093} 2094 2095static int v4l_querystd(const struct v4l2_ioctl_ops *ops, struct file *file, 2096 void *arg) 2097{ 2098 struct video_device *vfd = video_devdata(file); 2099 v4l2_std_id *p = arg; 2100 int ret; 2101 2102 ret = v4l_enable_media_source(vfd); 2103 if (ret) 2104 return ret; 2105 /* 2106 * If no signal is detected, then the driver should return 2107 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with 2108 * any standards that do not apply removed. 2109 * 2110 * This means that tuners, audio and video decoders can join 2111 * their efforts to improve the standards detection. 2112 */ 2113 *p = vfd->tvnorms; 2114 return ops->vidioc_querystd(file, NULL, arg); 2115} 2116 2117static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops, 2118 struct file *file, void *arg) 2119{ 2120 struct video_device *vfd = video_devdata(file); 2121 struct v4l2_hw_freq_seek *p = arg; 2122 enum v4l2_tuner_type type; 2123 int ret; 2124 2125 ret = v4l_enable_media_source(vfd); 2126 if (ret) 2127 return ret; 2128 /* s_hw_freq_seek is not supported for SDR for now */ 2129 if (vfd->vfl_type == VFL_TYPE_SDR) 2130 return -EINVAL; 2131 2132 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2133 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2134 if (p->type != type) 2135 return -EINVAL; 2136 return ops->vidioc_s_hw_freq_seek(file, NULL, p); 2137} 2138 2139static int v4l_s_fbuf(const struct v4l2_ioctl_ops *ops, struct file *file, 2140 void *arg) 2141{ 2142 struct v4l2_framebuffer *p = arg; 2143 2144 p->base = NULL; 2145 return ops->vidioc_s_fbuf(file, NULL, p); 2146} 2147 2148static int v4l_overlay(const struct v4l2_ioctl_ops *ops, struct file *file, 2149 void *arg) 2150{ 2151 return ops->vidioc_overlay(file, NULL, *(unsigned int *)arg); 2152} 2153 2154static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops, struct file *file, 2155 void *arg) 2156{ 2157 struct video_device *vfd = video_devdata(file); 2158 struct v4l2_requestbuffers *p = arg; 2159 int ret = check_fmt(file, p->type); 2160 2161 if (ret) 2162 return ret; 2163 2164 memset_after(p, 0, flags); 2165 2166 p->capabilities = 0; 2167 if (is_valid_ioctl(vfd, VIDIOC_REMOVE_BUFS)) 2168 p->capabilities = V4L2_BUF_CAP_SUPPORTS_REMOVE_BUFS; 2169 2170 return ops->vidioc_reqbufs(file, NULL, p); 2171} 2172 2173static int v4l_querybuf(const struct v4l2_ioctl_ops *ops, struct file *file, 2174 void *arg) 2175{ 2176 struct v4l2_buffer *p = arg; 2177 int ret = check_fmt(file, p->type); 2178 2179 return ret ? ret : ops->vidioc_querybuf(file, NULL, p); 2180} 2181 2182static int v4l_qbuf(const struct v4l2_ioctl_ops *ops, struct file *file, 2183 void *arg) 2184{ 2185 struct v4l2_buffer *p = arg; 2186 int ret = check_fmt(file, p->type); 2187 2188 return ret ? ret : ops->vidioc_qbuf(file, NULL, p); 2189} 2190 2191static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops, struct file *file, 2192 void *arg) 2193{ 2194 struct v4l2_buffer *p = arg; 2195 int ret = check_fmt(file, p->type); 2196 2197 return ret ? ret : ops->vidioc_dqbuf(file, NULL, p); 2198} 2199 2200static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops, 2201 struct file *file, void *arg) 2202{ 2203 struct video_device *vfd = video_devdata(file); 2204 struct v4l2_create_buffers *create = arg; 2205 int ret = check_fmt(file, create->format.type); 2206 2207 if (ret) 2208 return ret; 2209 2210 memset_after(create, 0, flags); 2211 2212 v4l_sanitize_format(&create->format); 2213 2214 create->capabilities = 0; 2215 if (is_valid_ioctl(vfd, VIDIOC_REMOVE_BUFS)) 2216 create->capabilities = V4L2_BUF_CAP_SUPPORTS_REMOVE_BUFS; 2217 2218 ret = ops->vidioc_create_bufs(file, NULL, create); 2219 2220 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 2221 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT) 2222 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 2223 2224 return ret; 2225} 2226 2227static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops, 2228 struct file *file, void *arg) 2229{ 2230 struct v4l2_buffer *b = arg; 2231 int ret = check_fmt(file, b->type); 2232 2233 return ret ? ret : ops->vidioc_prepare_buf(file, NULL, b); 2234} 2235 2236static int v4l_remove_bufs(const struct v4l2_ioctl_ops *ops, 2237 struct file *file, void *arg) 2238{ 2239 struct v4l2_remove_buffers *remove = arg; 2240 2241 if (ops->vidioc_remove_bufs) 2242 return ops->vidioc_remove_bufs(file, NULL, remove); 2243 2244 return -ENOTTY; 2245} 2246 2247static int v4l_g_parm(const struct v4l2_ioctl_ops *ops, struct file *file, 2248 void *arg) 2249{ 2250 struct video_device *vfd = video_devdata(file); 2251 struct v4l2_streamparm *p = arg; 2252 v4l2_std_id std; 2253 int ret = check_fmt(file, p->type); 2254 2255 if (ret) 2256 return ret; 2257 if (ops->vidioc_g_parm) 2258 return ops->vidioc_g_parm(file, NULL, p); 2259 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && 2260 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2261 return -EINVAL; 2262 if (vfd->device_caps & V4L2_CAP_READWRITE) 2263 p->parm.capture.readbuffers = 2; 2264 ret = ops->vidioc_g_std(file, NULL, &std); 2265 if (ret == 0) 2266 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe); 2267 return ret; 2268} 2269 2270static int v4l_s_parm(const struct v4l2_ioctl_ops *ops, struct file *file, 2271 void *arg) 2272{ 2273 struct v4l2_streamparm *p = arg; 2274 int ret = check_fmt(file, p->type); 2275 2276 if (ret) 2277 return ret; 2278 2279 /* Note: extendedmode is never used in drivers */ 2280 if (V4L2_TYPE_IS_OUTPUT(p->type)) { 2281 memset(p->parm.output.reserved, 0, 2282 sizeof(p->parm.output.reserved)); 2283 p->parm.output.extendedmode = 0; 2284 p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY; 2285 } else { 2286 memset(p->parm.capture.reserved, 0, 2287 sizeof(p->parm.capture.reserved)); 2288 p->parm.capture.extendedmode = 0; 2289 p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY; 2290 } 2291 return ops->vidioc_s_parm(file, NULL, p); 2292} 2293 2294static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops, struct file *file, 2295 void *arg) 2296{ 2297 struct video_device *vfd = video_devdata(file); 2298 struct v4l2_query_ext_ctrl qec = {}; 2299 struct v4l2_queryctrl *p = arg; 2300 struct v4l2_fh *vfh = file_to_v4l2_fh(file); 2301 int ret; 2302 2303 if (vfh && vfh->ctrl_handler) 2304 return v4l2_queryctrl(vfh->ctrl_handler, p); 2305 if (vfd->ctrl_handler) 2306 return v4l2_queryctrl(vfd->ctrl_handler, p); 2307 if (!ops->vidioc_query_ext_ctrl) 2308 return -ENOTTY; 2309 2310 /* Simulate query_ext_ctr using query_ctrl. */ 2311 qec.id = p->id; 2312 ret = ops->vidioc_query_ext_ctrl(file, NULL, &qec); 2313 if (ret) 2314 return ret; 2315 v4l2_query_ext_ctrl_to_v4l2_queryctrl(p, &qec); 2316 return ret; 2317} 2318 2319static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops, 2320 struct file *file, void *arg) 2321{ 2322 struct video_device *vfd = video_devdata(file); 2323 struct v4l2_query_ext_ctrl *p = arg; 2324 struct v4l2_fh *vfh = file_to_v4l2_fh(file); 2325 2326 if (vfh && vfh->ctrl_handler) 2327 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p); 2328 if (vfd->ctrl_handler) 2329 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p); 2330 if (ops->vidioc_query_ext_ctrl) 2331 return ops->vidioc_query_ext_ctrl(file, NULL, p); 2332 return -ENOTTY; 2333} 2334 2335static int v4l_querymenu(const struct v4l2_ioctl_ops *ops, struct file *file, 2336 void *arg) 2337{ 2338 struct video_device *vfd = video_devdata(file); 2339 struct v4l2_querymenu *p = arg; 2340 struct v4l2_fh *vfh = file_to_v4l2_fh(file); 2341 2342 if (vfh && vfh->ctrl_handler) 2343 return v4l2_querymenu(vfh->ctrl_handler, p); 2344 if (vfd->ctrl_handler) 2345 return v4l2_querymenu(vfd->ctrl_handler, p); 2346 if (ops->vidioc_querymenu) 2347 return ops->vidioc_querymenu(file, NULL, p); 2348 return -ENOTTY; 2349} 2350 2351static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops, struct file *file, 2352 void *arg) 2353{ 2354 struct video_device *vfd = video_devdata(file); 2355 struct v4l2_control *p = arg; 2356 struct v4l2_fh *vfh = file_to_v4l2_fh(file); 2357 struct v4l2_ext_controls ctrls; 2358 struct v4l2_ext_control ctrl; 2359 2360 if (vfh && vfh->ctrl_handler) 2361 return v4l2_g_ctrl(vfh->ctrl_handler, p); 2362 if (vfd->ctrl_handler) 2363 return v4l2_g_ctrl(vfd->ctrl_handler, p); 2364 if (ops->vidioc_g_ext_ctrls == NULL) 2365 return -ENOTTY; 2366 2367 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2368 ctrls.count = 1; 2369 ctrls.controls = &ctrl; 2370 ctrl.id = p->id; 2371 ctrl.value = p->value; 2372 if (check_ext_ctrls(&ctrls, VIDIOC_G_CTRL)) { 2373 int ret = ops->vidioc_g_ext_ctrls(file, NULL, &ctrls); 2374 2375 if (ret == 0) 2376 p->value = ctrl.value; 2377 return ret; 2378 } 2379 return -EINVAL; 2380} 2381 2382static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, struct file *file, 2383 void *arg) 2384{ 2385 struct video_device *vfd = video_devdata(file); 2386 struct v4l2_control *p = arg; 2387 struct v4l2_fh *vfh = file_to_v4l2_fh(file); 2388 struct v4l2_ext_controls ctrls; 2389 struct v4l2_ext_control ctrl; 2390 int ret; 2391 2392 if (vfh && vfh->ctrl_handler) 2393 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p); 2394 if (vfd->ctrl_handler) 2395 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p); 2396 if (ops->vidioc_s_ext_ctrls == NULL) 2397 return -ENOTTY; 2398 2399 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2400 ctrls.count = 1; 2401 ctrls.controls = &ctrl; 2402 ctrl.id = p->id; 2403 ctrl.value = p->value; 2404 if (!check_ext_ctrls(&ctrls, VIDIOC_S_CTRL)) 2405 return -EINVAL; 2406 ret = ops->vidioc_s_ext_ctrls(file, NULL, &ctrls); 2407 p->value = ctrl.value; 2408 return ret; 2409} 2410 2411static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2412 struct file *file, void *arg) 2413{ 2414 struct video_device *vfd = video_devdata(file); 2415 struct v4l2_ext_controls *p = arg; 2416 struct v4l2_fh *vfh = file_to_v4l2_fh(file); 2417 2418 p->error_idx = p->count; 2419 if (vfh && vfh->ctrl_handler) 2420 return v4l2_g_ext_ctrls(vfh->ctrl_handler, 2421 vfd, vfd->v4l2_dev->mdev, p); 2422 if (vfd->ctrl_handler) 2423 return v4l2_g_ext_ctrls(vfd->ctrl_handler, 2424 vfd, vfd->v4l2_dev->mdev, p); 2425 if (ops->vidioc_g_ext_ctrls == NULL) 2426 return -ENOTTY; 2427 return check_ext_ctrls(p, VIDIOC_G_EXT_CTRLS) ? 2428 ops->vidioc_g_ext_ctrls(file, NULL, p) : -EINVAL; 2429} 2430 2431static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2432 struct file *file, void *arg) 2433{ 2434 struct video_device *vfd = video_devdata(file); 2435 struct v4l2_ext_controls *p = arg; 2436 struct v4l2_fh *vfh = file_to_v4l2_fh(file); 2437 2438 p->error_idx = p->count; 2439 if (vfh && vfh->ctrl_handler) 2440 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, 2441 vfd, vfd->v4l2_dev->mdev, p); 2442 if (vfd->ctrl_handler) 2443 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, 2444 vfd, vfd->v4l2_dev->mdev, p); 2445 if (ops->vidioc_s_ext_ctrls == NULL) 2446 return -ENOTTY; 2447 return check_ext_ctrls(p, VIDIOC_S_EXT_CTRLS) ? 2448 ops->vidioc_s_ext_ctrls(file, NULL, p) : -EINVAL; 2449} 2450 2451static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2452 struct file *file, void *arg) 2453{ 2454 struct video_device *vfd = video_devdata(file); 2455 struct v4l2_ext_controls *p = arg; 2456 struct v4l2_fh *vfh = file_to_v4l2_fh(file); 2457 2458 p->error_idx = p->count; 2459 if (vfh && vfh->ctrl_handler) 2460 return v4l2_try_ext_ctrls(vfh->ctrl_handler, 2461 vfd, vfd->v4l2_dev->mdev, p); 2462 if (vfd->ctrl_handler) 2463 return v4l2_try_ext_ctrls(vfd->ctrl_handler, 2464 vfd, vfd->v4l2_dev->mdev, p); 2465 if (ops->vidioc_try_ext_ctrls == NULL) 2466 return -ENOTTY; 2467 return check_ext_ctrls(p, VIDIOC_TRY_EXT_CTRLS) ? 2468 ops->vidioc_try_ext_ctrls(file, NULL, p) : -EINVAL; 2469} 2470 2471/* 2472 * The selection API specified originally that the _MPLANE buffer types 2473 * shouldn't be used. The reasons for this are lost in the mists of time 2474 * (or just really crappy memories). Regardless, this is really annoying 2475 * for userspace. So to keep things simple we map _MPLANE buffer types 2476 * to their 'regular' counterparts before calling the driver. And we 2477 * restore it afterwards. This way applications can use either buffer 2478 * type and drivers don't need to check for both. 2479 */ 2480static int v4l_g_selection(const struct v4l2_ioctl_ops *ops, 2481 struct file *file, void *arg) 2482{ 2483 struct v4l2_selection *p = arg; 2484 u32 old_type = p->type; 2485 int ret; 2486 2487 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2488 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2489 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2490 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2491 ret = ops->vidioc_g_selection(file, NULL, p); 2492 p->type = old_type; 2493 return ret; 2494} 2495 2496static int v4l_s_selection(const struct v4l2_ioctl_ops *ops, 2497 struct file *file, void *arg) 2498{ 2499 struct v4l2_selection *p = arg; 2500 u32 old_type = p->type; 2501 int ret; 2502 2503 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2504 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2505 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2506 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2507 ret = ops->vidioc_s_selection(file, NULL, p); 2508 p->type = old_type; 2509 return ret; 2510} 2511 2512static int v4l_g_crop(const struct v4l2_ioctl_ops *ops, struct file *file, 2513 void *arg) 2514{ 2515 struct video_device *vfd = video_devdata(file); 2516 struct v4l2_crop *p = arg; 2517 struct v4l2_selection s = { 2518 .type = p->type, 2519 }; 2520 int ret; 2521 2522 /* simulate capture crop using selection api */ 2523 2524 /* crop means compose for output devices */ 2525 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2526 s.target = V4L2_SEL_TGT_COMPOSE; 2527 else 2528 s.target = V4L2_SEL_TGT_CROP; 2529 2530 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2531 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2532 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2533 2534 ret = v4l_g_selection(ops, file, &s); 2535 2536 /* copying results to old structure on success */ 2537 if (!ret) 2538 p->c = s.r; 2539 return ret; 2540} 2541 2542static int v4l_s_crop(const struct v4l2_ioctl_ops *ops, struct file *file, 2543 void *arg) 2544{ 2545 struct video_device *vfd = video_devdata(file); 2546 struct v4l2_crop *p = arg; 2547 struct v4l2_selection s = { 2548 .type = p->type, 2549 .r = p->c, 2550 }; 2551 2552 /* simulate capture crop using selection api */ 2553 2554 /* crop means compose for output devices */ 2555 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2556 s.target = V4L2_SEL_TGT_COMPOSE; 2557 else 2558 s.target = V4L2_SEL_TGT_CROP; 2559 2560 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2561 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2562 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2563 2564 return v4l_s_selection(ops, file, &s); 2565} 2566 2567static int v4l_cropcap(const struct v4l2_ioctl_ops *ops, struct file *file, 2568 void *arg) 2569{ 2570 struct video_device *vfd = video_devdata(file); 2571 struct v4l2_cropcap *p = arg; 2572 struct v4l2_selection s = { .type = p->type }; 2573 int ret = 0; 2574 2575 /* setting trivial pixelaspect */ 2576 p->pixelaspect.numerator = 1; 2577 p->pixelaspect.denominator = 1; 2578 2579 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2580 s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2581 else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2582 s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2583 2584 /* 2585 * The determine_valid_ioctls() call already should ensure 2586 * that this can never happen, but just in case... 2587 */ 2588 if (WARN_ON(!ops->vidioc_g_selection)) 2589 return -ENOTTY; 2590 2591 if (ops->vidioc_g_pixelaspect) 2592 ret = ops->vidioc_g_pixelaspect(file, NULL, s.type, 2593 &p->pixelaspect); 2594 2595 /* 2596 * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the 2597 * square pixel aspect ratio in that case. 2598 */ 2599 if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD) 2600 return ret; 2601 2602 /* Use g_selection() to fill in the bounds and defrect rectangles */ 2603 2604 /* obtaining bounds */ 2605 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2606 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS; 2607 else 2608 s.target = V4L2_SEL_TGT_CROP_BOUNDS; 2609 2610 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2611 s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ? 2612 V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS; 2613 2614 ret = v4l_g_selection(ops, file, &s); 2615 if (ret) 2616 return ret; 2617 p->bounds = s.r; 2618 2619 /* obtaining defrect */ 2620 if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS) 2621 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT; 2622 else 2623 s.target = V4L2_SEL_TGT_CROP_DEFAULT; 2624 2625 ret = v4l_g_selection(ops, file, &s); 2626 if (ret) 2627 return ret; 2628 p->defrect = s.r; 2629 2630 return 0; 2631} 2632 2633static int v4l_log_status(const struct v4l2_ioctl_ops *ops, struct file *file, 2634 void *arg) 2635{ 2636 struct video_device *vfd = video_devdata(file); 2637 int ret; 2638 2639 if (vfd->v4l2_dev) 2640 pr_info("%s: ================= START STATUS =================\n", 2641 vfd->v4l2_dev->name); 2642 ret = ops->vidioc_log_status(file, NULL); 2643 if (vfd->v4l2_dev) 2644 pr_info("%s: ================== END STATUS ==================\n", 2645 vfd->v4l2_dev->name); 2646 return ret; 2647} 2648 2649static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops, 2650 struct file *file, void *arg) 2651{ 2652#ifdef CONFIG_VIDEO_ADV_DEBUG 2653 struct v4l2_dbg_register *p = arg; 2654 struct video_device *vfd = video_devdata(file); 2655 struct v4l2_subdev *sd; 2656 int idx = 0; 2657 2658 if (!capable(CAP_SYS_ADMIN)) 2659 return -EPERM; 2660 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2661 if (vfd->v4l2_dev == NULL) 2662 return -EINVAL; 2663 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2664 if (p->match.addr == idx++) 2665 return v4l2_subdev_call(sd, core, g_register, p); 2666 return -EINVAL; 2667 } 2668 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2669 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2670 return ops->vidioc_g_register(file, NULL, p); 2671 return -EINVAL; 2672#else 2673 return -ENOTTY; 2674#endif 2675} 2676 2677static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops, 2678 struct file *file, void *arg) 2679{ 2680#ifdef CONFIG_VIDEO_ADV_DEBUG 2681 const struct v4l2_dbg_register *p = arg; 2682 struct video_device *vfd = video_devdata(file); 2683 struct v4l2_subdev *sd; 2684 int idx = 0; 2685 2686 if (!capable(CAP_SYS_ADMIN)) 2687 return -EPERM; 2688 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2689 if (vfd->v4l2_dev == NULL) 2690 return -EINVAL; 2691 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2692 if (p->match.addr == idx++) 2693 return v4l2_subdev_call(sd, core, s_register, p); 2694 return -EINVAL; 2695 } 2696 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2697 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2698 return ops->vidioc_s_register(file, NULL, p); 2699 return -EINVAL; 2700#else 2701 return -ENOTTY; 2702#endif 2703} 2704 2705static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops, 2706 struct file *file, void *arg) 2707{ 2708#ifdef CONFIG_VIDEO_ADV_DEBUG 2709 struct video_device *vfd = video_devdata(file); 2710 struct v4l2_dbg_chip_info *p = arg; 2711 struct v4l2_subdev *sd; 2712 int idx = 0; 2713 2714 switch (p->match.type) { 2715 case V4L2_CHIP_MATCH_BRIDGE: 2716 if (ops->vidioc_s_register) 2717 p->flags |= V4L2_CHIP_FL_WRITABLE; 2718 if (ops->vidioc_g_register) 2719 p->flags |= V4L2_CHIP_FL_READABLE; 2720 strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name)); 2721 if (ops->vidioc_g_chip_info) 2722 return ops->vidioc_g_chip_info(file, NULL, arg); 2723 if (p->match.addr) 2724 return -EINVAL; 2725 return 0; 2726 2727 case V4L2_CHIP_MATCH_SUBDEV: 2728 if (vfd->v4l2_dev == NULL) 2729 break; 2730 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) { 2731 if (p->match.addr != idx++) 2732 continue; 2733 if (sd->ops->core && sd->ops->core->s_register) 2734 p->flags |= V4L2_CHIP_FL_WRITABLE; 2735 if (sd->ops->core && sd->ops->core->g_register) 2736 p->flags |= V4L2_CHIP_FL_READABLE; 2737 strscpy(p->name, sd->name, sizeof(p->name)); 2738 return 0; 2739 } 2740 break; 2741 } 2742 return -EINVAL; 2743#else 2744 return -ENOTTY; 2745#endif 2746} 2747 2748static int v4l_dqevent(const struct v4l2_ioctl_ops *ops, struct file *file, 2749 void *arg) 2750{ 2751 struct v4l2_fh *vfh = file_to_v4l2_fh(file); 2752 2753 return v4l2_event_dequeue(vfh, arg, file->f_flags & O_NONBLOCK); 2754} 2755 2756static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops, 2757 struct file *file, void *arg) 2758{ 2759 struct v4l2_fh *vfh = file_to_v4l2_fh(file); 2760 2761 return ops->vidioc_subscribe_event(vfh, arg); 2762} 2763 2764static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops, 2765 struct file *file, void *arg) 2766{ 2767 struct v4l2_fh *vfh = file_to_v4l2_fh(file); 2768 2769 return ops->vidioc_unsubscribe_event(vfh, arg); 2770} 2771 2772static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops, 2773 struct file *file, void *arg) 2774{ 2775 struct v4l2_sliced_vbi_cap *p = arg; 2776 int ret = check_fmt(file, p->type); 2777 2778 if (ret) 2779 return ret; 2780 2781 /* Clear up to type, everything after type is zeroed already */ 2782 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type)); 2783 2784 return ops->vidioc_g_sliced_vbi_cap(file, NULL, p); 2785} 2786 2787static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops, 2788 struct file *file, void *arg) 2789{ 2790 struct video_device *vfd = video_devdata(file); 2791 struct v4l2_frequency_band *p = arg; 2792 enum v4l2_tuner_type type; 2793 int err; 2794 2795 if (vfd->vfl_type == VFL_TYPE_SDR) { 2796 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 2797 return -EINVAL; 2798 type = p->type; 2799 } else { 2800 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2801 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2802 if (type != p->type) 2803 return -EINVAL; 2804 } 2805 if (ops->vidioc_enum_freq_bands) { 2806 err = ops->vidioc_enum_freq_bands(file, NULL, p); 2807 if (err != -ENOTTY) 2808 return err; 2809 } 2810 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) { 2811 struct v4l2_tuner t = { 2812 .index = p->tuner, 2813 .type = type, 2814 }; 2815 2816 if (p->index) 2817 return -EINVAL; 2818 err = ops->vidioc_g_tuner(file, NULL, &t); 2819 if (err) 2820 return err; 2821 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2822 p->rangelow = t.rangelow; 2823 p->rangehigh = t.rangehigh; 2824 p->modulation = (type == V4L2_TUNER_RADIO) ? 2825 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2826 return 0; 2827 } 2828 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) { 2829 struct v4l2_modulator m = { 2830 .index = p->tuner, 2831 }; 2832 2833 if (type != V4L2_TUNER_RADIO) 2834 return -EINVAL; 2835 if (p->index) 2836 return -EINVAL; 2837 err = ops->vidioc_g_modulator(file, NULL, &m); 2838 if (err) 2839 return err; 2840 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2841 p->rangelow = m.rangelow; 2842 p->rangehigh = m.rangehigh; 2843 p->modulation = V4L2_BAND_MODULATION_FM; 2844 return 0; 2845 } 2846 return -ENOTTY; 2847} 2848 2849struct v4l2_ioctl_info { 2850 unsigned int ioctl; 2851 u32 flags; 2852 const char * const name; 2853 int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file, 2854 void *p); 2855 void (*debug)(const void *arg, bool write_only); 2856}; 2857 2858/* This control needs a priority check */ 2859#define INFO_FL_PRIO (1 << 0) 2860/* This control can be valid if the filehandle passes a control handler. */ 2861#define INFO_FL_CTRL (1 << 1) 2862/* Queuing ioctl */ 2863#define INFO_FL_QUEUE (1 << 2) 2864/* Always copy back result, even on error */ 2865#define INFO_FL_ALWAYS_COPY (1 << 3) 2866/* Zero struct from after the field to the end */ 2867#define INFO_FL_CLEAR(v4l2_struct, field) \ 2868 ((offsetof(struct v4l2_struct, field) + \ 2869 sizeof_field(struct v4l2_struct, field)) << 16) 2870#define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16) 2871 2872#define DEFINE_V4L_STUB_FUNC(_vidioc) \ 2873 static int v4l_stub_ ## _vidioc( \ 2874 const struct v4l2_ioctl_ops *ops, \ 2875 struct file *file, void *p) \ 2876 { \ 2877 return ops->vidioc_ ## _vidioc(file, NULL, p); \ 2878 } 2879 2880#define IOCTL_INFO(_ioctl, _func, _debug, _flags) \ 2881 [_IOC_NR(_ioctl)] = { \ 2882 .ioctl = _ioctl, \ 2883 .flags = _flags, \ 2884 .name = #_ioctl, \ 2885 .func = _func, \ 2886 .debug = _debug, \ 2887 } 2888 2889DEFINE_V4L_STUB_FUNC(g_fbuf) 2890DEFINE_V4L_STUB_FUNC(expbuf) 2891DEFINE_V4L_STUB_FUNC(g_std) 2892DEFINE_V4L_STUB_FUNC(g_audio) 2893DEFINE_V4L_STUB_FUNC(s_audio) 2894DEFINE_V4L_STUB_FUNC(g_edid) 2895DEFINE_V4L_STUB_FUNC(s_edid) 2896DEFINE_V4L_STUB_FUNC(g_audout) 2897DEFINE_V4L_STUB_FUNC(s_audout) 2898DEFINE_V4L_STUB_FUNC(g_jpegcomp) 2899DEFINE_V4L_STUB_FUNC(s_jpegcomp) 2900DEFINE_V4L_STUB_FUNC(enumaudio) 2901DEFINE_V4L_STUB_FUNC(enumaudout) 2902DEFINE_V4L_STUB_FUNC(enum_framesizes) 2903DEFINE_V4L_STUB_FUNC(enum_frameintervals) 2904DEFINE_V4L_STUB_FUNC(g_enc_index) 2905DEFINE_V4L_STUB_FUNC(encoder_cmd) 2906DEFINE_V4L_STUB_FUNC(try_encoder_cmd) 2907DEFINE_V4L_STUB_FUNC(decoder_cmd) 2908DEFINE_V4L_STUB_FUNC(try_decoder_cmd) 2909DEFINE_V4L_STUB_FUNC(s_dv_timings) 2910DEFINE_V4L_STUB_FUNC(g_dv_timings) 2911DEFINE_V4L_STUB_FUNC(enum_dv_timings) 2912DEFINE_V4L_STUB_FUNC(query_dv_timings) 2913DEFINE_V4L_STUB_FUNC(dv_timings_cap) 2914 2915static const struct v4l2_ioctl_info v4l2_ioctls[] = { 2916 IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0), 2917 IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, 0), 2918 IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0), 2919 IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO), 2920 IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2921 IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)), 2922 IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0), 2923 IOCTL_INFO(VIDIOC_S_FBUF, v4l_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO), 2924 IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO), 2925 IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE), 2926 IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)), 2927 IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE), 2928 IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2929 IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2930 IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)), 2931 IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO), 2932 IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0), 2933 IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO), 2934 IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)), 2935 IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)), 2936 IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)), 2937 IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL), 2938 IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)), 2939 IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO), 2940 IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0), 2941 IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO), 2942 IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)), 2943 IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)), 2944 IOCTL_INFO(VIDIOC_G_INPUT, v4l_g_input, v4l_print_u32, 0), 2945 IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO), 2946 IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY), 2947 IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY), 2948 IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_g_output, v4l_print_u32, 0), 2949 IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO), 2950 IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)), 2951 IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0), 2952 IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO), 2953 IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)), 2954 IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO), 2955 IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)), 2956 IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO), 2957 IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)), 2958 IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)), 2959 IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO), 2960 IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)), 2961 IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)), 2962 IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0), 2963 IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO), 2964 IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0), 2965 IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0), 2966 IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)), 2967 IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)), 2968 IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0), 2969 IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO), 2970 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)), 2971 IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0), 2972 IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY), 2973 IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL | INFO_FL_ALWAYS_COPY), 2974 IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY), 2975 IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)), 2976 IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)), 2977 IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0), 2978 IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2979 IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2980 IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO), 2981 IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0), 2982 IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0), 2983 IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0), 2984 IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO), 2985 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)), 2986 IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0), 2987 IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0), 2988 IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0), 2989 IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0), 2990 IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2991 IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE), 2992 IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)), 2993 IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY), 2994 IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)), 2995 IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0), 2996 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)), 2997 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)), 2998 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)), 2999}; 3000#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) 3001 3002static bool v4l2_is_known_ioctl(unsigned int cmd) 3003{ 3004 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 3005 return false; 3006 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd; 3007} 3008 3009static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, 3010 struct v4l2_fh *vfh, unsigned int cmd, 3011 void *arg) 3012{ 3013 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 3014 return vdev->lock; 3015 if (vfh && vfh->m2m_ctx && 3016 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) { 3017 if (vfh->m2m_ctx->q_lock) 3018 return vfh->m2m_ctx->q_lock; 3019 } 3020 if (vdev->queue && vdev->queue->lock && 3021 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) 3022 return vdev->queue->lock; 3023 return vdev->lock; 3024} 3025 3026/* Common ioctl debug function. This function can be used by 3027 external ioctl messages as well as internal V4L ioctl */ 3028void v4l_printk_ioctl(const char *prefix, unsigned int cmd) 3029{ 3030 const char *dir, *type; 3031 3032 if (prefix) 3033 printk(KERN_DEBUG "%s: ", prefix); 3034 3035 switch (_IOC_TYPE(cmd)) { 3036 case 'd': 3037 type = "v4l2_int"; 3038 break; 3039 case 'V': 3040 if (!v4l2_is_known_ioctl(cmd)) { 3041 type = "v4l2"; 3042 break; 3043 } 3044 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name); 3045 return; 3046 default: 3047 type = "unknown"; 3048 break; 3049 } 3050 3051 switch (_IOC_DIR(cmd)) { 3052 case _IOC_NONE: dir = "--"; break; 3053 case _IOC_READ: dir = "r-"; break; 3054 case _IOC_WRITE: dir = "-w"; break; 3055 case _IOC_READ | _IOC_WRITE: dir = "rw"; break; 3056 default: dir = "*ERR*"; break; 3057 } 3058 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)", 3059 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd); 3060} 3061EXPORT_SYMBOL(v4l_printk_ioctl); 3062 3063static long __video_do_ioctl(struct file *file, 3064 unsigned int cmd, void *arg) 3065{ 3066 struct video_device *vfd = video_devdata(file); 3067 struct mutex *req_queue_lock = NULL; 3068 struct mutex *lock; /* ioctl serialization mutex */ 3069 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 3070 bool write_only = false; 3071 struct v4l2_ioctl_info default_info; 3072 const struct v4l2_ioctl_info *info; 3073 struct v4l2_fh *vfh = file_to_v4l2_fh(file); 3074 int dev_debug = vfd->dev_debug; 3075 long ret = -ENOTTY; 3076 3077 if (ops == NULL) { 3078 pr_warn("%s: has no ioctl_ops.\n", 3079 video_device_node_name(vfd)); 3080 return ret; 3081 } 3082 3083 /* 3084 * We need to serialize streamon/off/reqbufs with queueing new requests. 3085 * These ioctls may trigger the cancellation of a streaming 3086 * operation, and that should not be mixed with queueing a new 3087 * request at the same time. 3088 */ 3089 if (v4l2_device_supports_requests(vfd->v4l2_dev) && 3090 (cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF || 3091 cmd == VIDIOC_REQBUFS)) { 3092 req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex; 3093 3094 if (mutex_lock_interruptible(req_queue_lock)) 3095 return -ERESTARTSYS; 3096 } 3097 3098 lock = v4l2_ioctl_get_lock(vfd, vfh, cmd, arg); 3099 3100 if (lock && mutex_lock_interruptible(lock)) { 3101 if (req_queue_lock) 3102 mutex_unlock(req_queue_lock); 3103 return -ERESTARTSYS; 3104 } 3105 3106 if (!video_is_registered(vfd)) { 3107 ret = -ENODEV; 3108 goto unlock; 3109 } 3110 3111 if (v4l2_is_known_ioctl(cmd)) { 3112 info = &v4l2_ioctls[_IOC_NR(cmd)]; 3113 3114 if (!is_valid_ioctl(vfd, cmd) && 3115 !((info->flags & INFO_FL_CTRL) && vfh->ctrl_handler)) 3116 goto done; 3117 3118 if (info->flags & INFO_FL_PRIO) { 3119 ret = v4l2_prio_check(vfd->prio, vfh->prio); 3120 if (ret) 3121 goto done; 3122 } 3123 } else { 3124 default_info.ioctl = cmd; 3125 default_info.flags = 0; 3126 default_info.debug = v4l_print_default; 3127 info = &default_info; 3128 } 3129 3130 write_only = _IOC_DIR(cmd) == _IOC_WRITE; 3131 if (info != &default_info) { 3132 ret = info->func(ops, file, arg); 3133 } else if (!ops->vidioc_default) { 3134 ret = -ENOTTY; 3135 } else { 3136 ret = ops->vidioc_default(file, NULL, 3137 v4l2_prio_check(vfd->prio, vfh->prio) >= 0, 3138 cmd, arg); 3139 } 3140 3141done: 3142 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) { 3143 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) && 3144 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF)) 3145 goto unlock; 3146 3147 v4l_printk_ioctl(video_device_node_name(vfd), cmd); 3148 if (ret < 0) 3149 pr_cont(": error %ld", ret); 3150 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG)) 3151 pr_cont("\n"); 3152 else if (_IOC_DIR(cmd) == _IOC_NONE) 3153 info->debug(arg, write_only); 3154 else { 3155 pr_cont(": "); 3156 info->debug(arg, write_only); 3157 } 3158 } 3159 3160unlock: 3161 if (lock) 3162 mutex_unlock(lock); 3163 if (req_queue_lock) 3164 mutex_unlock(req_queue_lock); 3165 return ret; 3166} 3167 3168static int check_array_args(unsigned int cmd, void *parg, size_t *array_size, 3169 void __user **user_ptr, void ***kernel_ptr) 3170{ 3171 int ret = 0; 3172 3173 switch (cmd) { 3174 case VIDIOC_PREPARE_BUF: 3175 case VIDIOC_QUERYBUF: 3176 case VIDIOC_QBUF: 3177 case VIDIOC_DQBUF: { 3178 struct v4l2_buffer *buf = parg; 3179 3180 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) { 3181 if (buf->length > VIDEO_MAX_PLANES) { 3182 ret = -EINVAL; 3183 break; 3184 } 3185 *user_ptr = (void __user *)buf->m.planes; 3186 *kernel_ptr = (void **)&buf->m.planes; 3187 *array_size = sizeof(struct v4l2_plane) * buf->length; 3188 ret = 1; 3189 } 3190 break; 3191 } 3192 3193 case VIDIOC_G_EDID: 3194 case VIDIOC_S_EDID: { 3195 struct v4l2_edid *edid = parg; 3196 3197 if (edid->blocks) { 3198 if (edid->blocks > 256) { 3199 ret = -EINVAL; 3200 break; 3201 } 3202 *user_ptr = (void __user *)edid->edid; 3203 *kernel_ptr = (void **)&edid->edid; 3204 *array_size = edid->blocks * 128; 3205 ret = 1; 3206 } 3207 break; 3208 } 3209 3210 case VIDIOC_S_EXT_CTRLS: 3211 case VIDIOC_G_EXT_CTRLS: 3212 case VIDIOC_TRY_EXT_CTRLS: { 3213 struct v4l2_ext_controls *ctrls = parg; 3214 3215 if (ctrls->count != 0) { 3216 if (ctrls->count > V4L2_CID_MAX_CTRLS) { 3217 ret = -EINVAL; 3218 break; 3219 } 3220 *user_ptr = (void __user *)ctrls->controls; 3221 *kernel_ptr = (void **)&ctrls->controls; 3222 *array_size = sizeof(struct v4l2_ext_control) 3223 * ctrls->count; 3224 ret = 1; 3225 } 3226 break; 3227 } 3228 3229 case VIDIOC_SUBDEV_G_ROUTING: 3230 case VIDIOC_SUBDEV_S_ROUTING: { 3231 struct v4l2_subdev_routing *routing = parg; 3232 3233 if (routing->len_routes > 256) 3234 return -E2BIG; 3235 3236 *user_ptr = u64_to_user_ptr(routing->routes); 3237 *kernel_ptr = (void **)&routing->routes; 3238 *array_size = sizeof(struct v4l2_subdev_route) 3239 * routing->len_routes; 3240 ret = 1; 3241 break; 3242 } 3243 } 3244 3245 return ret; 3246} 3247 3248unsigned int v4l2_translate_cmd(unsigned int cmd) 3249{ 3250#if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3251 switch (cmd) { 3252 case VIDIOC_DQEVENT_TIME32: 3253 return VIDIOC_DQEVENT; 3254 case VIDIOC_QUERYBUF_TIME32: 3255 return VIDIOC_QUERYBUF; 3256 case VIDIOC_QBUF_TIME32: 3257 return VIDIOC_QBUF; 3258 case VIDIOC_DQBUF_TIME32: 3259 return VIDIOC_DQBUF; 3260 case VIDIOC_PREPARE_BUF_TIME32: 3261 return VIDIOC_PREPARE_BUF; 3262 } 3263#endif 3264 if (in_compat_syscall()) 3265 return v4l2_compat_translate_cmd(cmd); 3266 3267 return cmd; 3268} 3269EXPORT_SYMBOL_GPL(v4l2_translate_cmd); 3270 3271static int video_get_user(void __user *arg, void *parg, 3272 unsigned int real_cmd, unsigned int cmd, 3273 bool *always_copy) 3274{ 3275 unsigned int n = _IOC_SIZE(real_cmd); 3276 int err = 0; 3277 3278 if (!(_IOC_DIR(cmd) & _IOC_WRITE)) { 3279 /* read-only ioctl */ 3280 memset(parg, 0, n); 3281 return 0; 3282 } 3283 3284 /* 3285 * In some cases, only a few fields are used as input, 3286 * i.e. when the app sets "index" and then the driver 3287 * fills in the rest of the structure for the thing 3288 * with that index. We only need to copy up the first 3289 * non-input field. 3290 */ 3291 if (v4l2_is_known_ioctl(real_cmd)) { 3292 u32 flags = v4l2_ioctls[_IOC_NR(real_cmd)].flags; 3293 3294 if (flags & INFO_FL_CLEAR_MASK) 3295 n = (flags & INFO_FL_CLEAR_MASK) >> 16; 3296 *always_copy = flags & INFO_FL_ALWAYS_COPY; 3297 } 3298 3299 if (cmd == real_cmd) { 3300 if (copy_from_user(parg, (void __user *)arg, n)) 3301 err = -EFAULT; 3302 } else if (in_compat_syscall()) { 3303 memset(parg, 0, n); 3304 err = v4l2_compat_get_user(arg, parg, cmd); 3305 } else { 3306 memset(parg, 0, n); 3307#if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3308 switch (cmd) { 3309 case VIDIOC_QUERYBUF_TIME32: 3310 case VIDIOC_QBUF_TIME32: 3311 case VIDIOC_DQBUF_TIME32: 3312 case VIDIOC_PREPARE_BUF_TIME32: { 3313 struct v4l2_buffer_time32 vb32; 3314 struct v4l2_buffer *vb = parg; 3315 3316 if (copy_from_user(&vb32, arg, sizeof(vb32))) 3317 return -EFAULT; 3318 3319 *vb = (struct v4l2_buffer) { 3320 .index = vb32.index, 3321 .type = vb32.type, 3322 .bytesused = vb32.bytesused, 3323 .flags = vb32.flags, 3324 .field = vb32.field, 3325 .timestamp.tv_sec = vb32.timestamp.tv_sec, 3326 .timestamp.tv_usec = vb32.timestamp.tv_usec, 3327 .timecode = vb32.timecode, 3328 .sequence = vb32.sequence, 3329 .memory = vb32.memory, 3330 .m.userptr = vb32.m.userptr, 3331 .length = vb32.length, 3332 .request_fd = vb32.request_fd, 3333 }; 3334 break; 3335 } 3336 } 3337#endif 3338 } 3339 3340 /* zero out anything we don't copy from userspace */ 3341 if (!err && n < _IOC_SIZE(real_cmd)) 3342 memset((u8 *)parg + n, 0, _IOC_SIZE(real_cmd) - n); 3343 return err; 3344} 3345 3346static int video_put_user(void __user *arg, void *parg, 3347 unsigned int real_cmd, unsigned int cmd) 3348{ 3349 if (!(_IOC_DIR(cmd) & _IOC_READ)) 3350 return 0; 3351 3352 if (cmd == real_cmd) { 3353 /* Copy results into user buffer */ 3354 if (copy_to_user(arg, parg, _IOC_SIZE(cmd))) 3355 return -EFAULT; 3356 return 0; 3357 } 3358 3359 if (in_compat_syscall()) 3360 return v4l2_compat_put_user(arg, parg, cmd); 3361 3362#if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3363 switch (cmd) { 3364 case VIDIOC_DQEVENT_TIME32: { 3365 struct v4l2_event *ev = parg; 3366 struct v4l2_event_time32 ev32; 3367 3368 memset(&ev32, 0, sizeof(ev32)); 3369 3370 ev32.type = ev->type; 3371 ev32.pending = ev->pending; 3372 ev32.sequence = ev->sequence; 3373 ev32.timestamp.tv_sec = ev->timestamp.tv_sec; 3374 ev32.timestamp.tv_nsec = ev->timestamp.tv_nsec; 3375 ev32.id = ev->id; 3376 3377 memcpy(&ev32.u, &ev->u, sizeof(ev->u)); 3378 memcpy(&ev32.reserved, &ev->reserved, sizeof(ev->reserved)); 3379 3380 if (copy_to_user(arg, &ev32, sizeof(ev32))) 3381 return -EFAULT; 3382 break; 3383 } 3384 case VIDIOC_QUERYBUF_TIME32: 3385 case VIDIOC_QBUF_TIME32: 3386 case VIDIOC_DQBUF_TIME32: 3387 case VIDIOC_PREPARE_BUF_TIME32: { 3388 struct v4l2_buffer *vb = parg; 3389 struct v4l2_buffer_time32 vb32; 3390 3391 memset(&vb32, 0, sizeof(vb32)); 3392 3393 vb32.index = vb->index; 3394 vb32.type = vb->type; 3395 vb32.bytesused = vb->bytesused; 3396 vb32.flags = vb->flags; 3397 vb32.field = vb->field; 3398 vb32.timestamp.tv_sec = vb->timestamp.tv_sec; 3399 vb32.timestamp.tv_usec = vb->timestamp.tv_usec; 3400 vb32.timecode = vb->timecode; 3401 vb32.sequence = vb->sequence; 3402 vb32.memory = vb->memory; 3403 vb32.m.userptr = vb->m.userptr; 3404 vb32.length = vb->length; 3405 vb32.request_fd = vb->request_fd; 3406 3407 if (copy_to_user(arg, &vb32, sizeof(vb32))) 3408 return -EFAULT; 3409 break; 3410 } 3411 } 3412#endif 3413 3414 return 0; 3415} 3416 3417long 3418video_usercopy(struct file *file, unsigned int orig_cmd, unsigned long arg, 3419 v4l2_kioctl func) 3420{ 3421 char sbuf[128]; 3422 void *mbuf = NULL, *array_buf = NULL; 3423 void *parg = (void *)arg; 3424 long err = -EINVAL; 3425 bool has_array_args; 3426 bool always_copy = false; 3427 size_t array_size = 0; 3428 void __user *user_ptr = NULL; 3429 void **kernel_ptr = NULL; 3430 unsigned int cmd = v4l2_translate_cmd(orig_cmd); 3431 const size_t ioc_size = _IOC_SIZE(cmd); 3432 3433 /* Copy arguments into temp kernel buffer */ 3434 if (_IOC_DIR(cmd) != _IOC_NONE) { 3435 if (ioc_size <= sizeof(sbuf)) { 3436 parg = sbuf; 3437 } else { 3438 /* too big to allocate from stack */ 3439 mbuf = kmalloc(ioc_size, GFP_KERNEL); 3440 if (NULL == mbuf) 3441 return -ENOMEM; 3442 parg = mbuf; 3443 } 3444 3445 err = video_get_user((void __user *)arg, parg, cmd, 3446 orig_cmd, &always_copy); 3447 if (err) 3448 goto out; 3449 } 3450 3451 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr); 3452 if (err < 0) 3453 goto out; 3454 has_array_args = err; 3455 3456 if (has_array_args) { 3457 array_buf = kvmalloc(array_size, GFP_KERNEL); 3458 err = -ENOMEM; 3459 if (array_buf == NULL) 3460 goto out; 3461 if (in_compat_syscall()) 3462 err = v4l2_compat_get_array_args(file, array_buf, 3463 user_ptr, array_size, 3464 orig_cmd, parg); 3465 else 3466 err = copy_from_user(array_buf, user_ptr, array_size) ? 3467 -EFAULT : 0; 3468 if (err) 3469 goto out; 3470 *kernel_ptr = array_buf; 3471 } 3472 3473 /* Handles IOCTL */ 3474 err = func(file, cmd, parg); 3475 if (err == -ENOTTY || err == -ENOIOCTLCMD) { 3476 err = -ENOTTY; 3477 goto out; 3478 } 3479 3480 if (err == 0) { 3481 if (cmd == VIDIOC_DQBUF) 3482 trace_v4l2_dqbuf(video_devdata(file)->minor, parg); 3483 else if (cmd == VIDIOC_QBUF) 3484 trace_v4l2_qbuf(video_devdata(file)->minor, parg); 3485 } 3486 3487 /* 3488 * Some ioctls can return an error, but still have valid 3489 * results that must be returned. 3490 * 3491 * FIXME: subdev IOCTLS are partially handled here and partially in 3492 * v4l2-subdev.c and the 'always_copy' flag can only be set for IOCTLS 3493 * defined here as part of the 'v4l2_ioctls' array. As 3494 * VIDIOC_SUBDEV_[GS]_ROUTING needs to return results to applications 3495 * even in case of failure, but it is not defined here as part of the 3496 * 'v4l2_ioctls' array, insert an ad-hoc check to address that. 3497 */ 3498 if (cmd == VIDIOC_SUBDEV_G_ROUTING || cmd == VIDIOC_SUBDEV_S_ROUTING) 3499 always_copy = true; 3500 3501 if (err < 0 && !always_copy) 3502 goto out; 3503 3504 if (has_array_args) { 3505 *kernel_ptr = (void __force *)user_ptr; 3506 if (in_compat_syscall()) { 3507 int put_err; 3508 3509 put_err = v4l2_compat_put_array_args(file, user_ptr, 3510 array_buf, 3511 array_size, 3512 orig_cmd, parg); 3513 if (put_err) 3514 err = put_err; 3515 } else if (copy_to_user(user_ptr, array_buf, array_size)) { 3516 err = -EFAULT; 3517 } 3518 } 3519 3520 if (video_put_user((void __user *)arg, parg, cmd, orig_cmd)) 3521 err = -EFAULT; 3522out: 3523 kvfree(array_buf); 3524 kfree(mbuf); 3525 return err; 3526} 3527 3528long video_ioctl2(struct file *file, 3529 unsigned int cmd, unsigned long arg) 3530{ 3531 return video_usercopy(file, cmd, arg, __video_do_ioctl); 3532} 3533EXPORT_SYMBOL(video_ioctl2);
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