1/* 2 * Video capture interface for Linux version 2 3 * 4 * A generic framework to process V4L2 ioctl commands. 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License 8 * as published by the Free Software Foundation; either version 9 * 2 of the License, or (at your option) any later version. 10 * 11 * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1) 12 * Mauro Carvalho Chehab <mchehab@infradead.org> (version 2) 13 */ 14 15#include <linux/module.h> 16#include <linux/slab.h> 17#include <linux/types.h> 18#include <linux/kernel.h> 19#include <linux/version.h> 20 21#include <linux/videodev2.h> 22 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 31#include <trace/events/v4l2.h> 32 33/* Zero out the end of the struct pointed to by p. Everything after, but 34 * not including, the specified field is cleared. */ 35#define CLEAR_AFTER_FIELD(p, field) \ 36 memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \ 37 0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field)) 38 39#define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls) 40 41struct std_descr { 42 v4l2_std_id std; 43 const char *descr; 44}; 45 46static const struct std_descr standards[] = { 47 { V4L2_STD_NTSC, "NTSC" }, 48 { V4L2_STD_NTSC_M, "NTSC-M" }, 49 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" }, 50 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" }, 51 { V4L2_STD_NTSC_443, "NTSC-443" }, 52 { V4L2_STD_PAL, "PAL" }, 53 { V4L2_STD_PAL_BG, "PAL-BG" }, 54 { V4L2_STD_PAL_B, "PAL-B" }, 55 { V4L2_STD_PAL_B1, "PAL-B1" }, 56 { V4L2_STD_PAL_G, "PAL-G" }, 57 { V4L2_STD_PAL_H, "PAL-H" }, 58 { V4L2_STD_PAL_I, "PAL-I" }, 59 { V4L2_STD_PAL_DK, "PAL-DK" }, 60 { V4L2_STD_PAL_D, "PAL-D" }, 61 { V4L2_STD_PAL_D1, "PAL-D1" }, 62 { V4L2_STD_PAL_K, "PAL-K" }, 63 { V4L2_STD_PAL_M, "PAL-M" }, 64 { V4L2_STD_PAL_N, "PAL-N" }, 65 { V4L2_STD_PAL_Nc, "PAL-Nc" }, 66 { V4L2_STD_PAL_60, "PAL-60" }, 67 { V4L2_STD_SECAM, "SECAM" }, 68 { V4L2_STD_SECAM_B, "SECAM-B" }, 69 { V4L2_STD_SECAM_G, "SECAM-G" }, 70 { V4L2_STD_SECAM_H, "SECAM-H" }, 71 { V4L2_STD_SECAM_DK, "SECAM-DK" }, 72 { V4L2_STD_SECAM_D, "SECAM-D" }, 73 { V4L2_STD_SECAM_K, "SECAM-K" }, 74 { V4L2_STD_SECAM_K1, "SECAM-K1" }, 75 { V4L2_STD_SECAM_L, "SECAM-L" }, 76 { V4L2_STD_SECAM_LC, "SECAM-Lc" }, 77 { 0, "Unknown" } 78}; 79 80/* video4linux standard ID conversion to standard name 81 */ 82const char *v4l2_norm_to_name(v4l2_std_id id) 83{ 84 u32 myid = id; 85 int i; 86 87 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle 88 64 bit comparations. So, on that architecture, with some gcc 89 variants, compilation fails. Currently, the max value is 30bit wide. 90 */ 91 BUG_ON(myid != id); 92 93 for (i = 0; standards[i].std; i++) 94 if (myid == standards[i].std) 95 break; 96 return standards[i].descr; 97} 98EXPORT_SYMBOL(v4l2_norm_to_name); 99 100/* Returns frame period for the given standard */ 101void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod) 102{ 103 if (id & V4L2_STD_525_60) { 104 frameperiod->numerator = 1001; 105 frameperiod->denominator = 30000; 106 } else { 107 frameperiod->numerator = 1; 108 frameperiod->denominator = 25; 109 } 110} 111EXPORT_SYMBOL(v4l2_video_std_frame_period); 112 113/* Fill in the fields of a v4l2_standard structure according to the 114 'id' and 'transmission' parameters. Returns negative on error. */ 115int v4l2_video_std_construct(struct v4l2_standard *vs, 116 int id, const char *name) 117{ 118 vs->id = id; 119 v4l2_video_std_frame_period(id, &vs->frameperiod); 120 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625; 121 strlcpy(vs->name, name, sizeof(vs->name)); 122 return 0; 123} 124EXPORT_SYMBOL(v4l2_video_std_construct); 125 126/* ----------------------------------------------------------------- */ 127/* some arrays for pretty-printing debug messages of enum types */ 128 129const char *v4l2_field_names[] = { 130 [V4L2_FIELD_ANY] = "any", 131 [V4L2_FIELD_NONE] = "none", 132 [V4L2_FIELD_TOP] = "top", 133 [V4L2_FIELD_BOTTOM] = "bottom", 134 [V4L2_FIELD_INTERLACED] = "interlaced", 135 [V4L2_FIELD_SEQ_TB] = "seq-tb", 136 [V4L2_FIELD_SEQ_BT] = "seq-bt", 137 [V4L2_FIELD_ALTERNATE] = "alternate", 138 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb", 139 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt", 140}; 141EXPORT_SYMBOL(v4l2_field_names); 142 143const char *v4l2_type_names[] = { 144 [0] = "0", 145 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap", 146 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay", 147 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out", 148 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap", 149 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out", 150 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap", 151 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out", 152 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay", 153 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane", 154 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane", 155 [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap", 156 [V4L2_BUF_TYPE_SDR_OUTPUT] = "sdr-out", 157}; 158EXPORT_SYMBOL(v4l2_type_names); 159 160static const char *v4l2_memory_names[] = { 161 [V4L2_MEMORY_MMAP] = "mmap", 162 [V4L2_MEMORY_USERPTR] = "userptr", 163 [V4L2_MEMORY_OVERLAY] = "overlay", 164 [V4L2_MEMORY_DMABUF] = "dmabuf", 165}; 166 167#define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown") 168 169/* ------------------------------------------------------------------ */ 170/* debug help functions */ 171 172static void v4l_print_querycap(const void *arg, bool write_only) 173{ 174 const struct v4l2_capability *p = arg; 175 176 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, " 177 "capabilities=0x%08x, device_caps=0x%08x\n", 178 (int)sizeof(p->driver), p->driver, 179 (int)sizeof(p->card), p->card, 180 (int)sizeof(p->bus_info), p->bus_info, 181 p->version, p->capabilities, p->device_caps); 182} 183 184static void v4l_print_enuminput(const void *arg, bool write_only) 185{ 186 const struct v4l2_input *p = arg; 187 188 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, " 189 "std=0x%08Lx, status=0x%x, capabilities=0x%x\n", 190 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, 191 p->tuner, (unsigned long long)p->std, p->status, 192 p->capabilities); 193} 194 195static void v4l_print_enumoutput(const void *arg, bool write_only) 196{ 197 const struct v4l2_output *p = arg; 198 199 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, " 200 "modulator=%u, std=0x%08Lx, capabilities=0x%x\n", 201 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, 202 p->modulator, (unsigned long long)p->std, p->capabilities); 203} 204 205static void v4l_print_audio(const void *arg, bool write_only) 206{ 207 const struct v4l2_audio *p = arg; 208 209 if (write_only) 210 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode); 211 else 212 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", 213 p->index, (int)sizeof(p->name), p->name, 214 p->capability, p->mode); 215} 216 217static void v4l_print_audioout(const void *arg, bool write_only) 218{ 219 const struct v4l2_audioout *p = arg; 220 221 if (write_only) 222 pr_cont("index=%u\n", p->index); 223 else 224 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", 225 p->index, (int)sizeof(p->name), p->name, 226 p->capability, p->mode); 227} 228 229static void v4l_print_fmtdesc(const void *arg, bool write_only) 230{ 231 const struct v4l2_fmtdesc *p = arg; 232 233 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%c%c%c%c, description='%.*s'\n", 234 p->index, prt_names(p->type, v4l2_type_names), 235 p->flags, (p->pixelformat & 0xff), 236 (p->pixelformat >> 8) & 0xff, 237 (p->pixelformat >> 16) & 0xff, 238 (p->pixelformat >> 24) & 0xff, 239 (int)sizeof(p->description), p->description); 240} 241 242static void v4l_print_format(const void *arg, bool write_only) 243{ 244 const struct v4l2_format *p = arg; 245 const struct v4l2_pix_format *pix; 246 const struct v4l2_pix_format_mplane *mp; 247 const struct v4l2_vbi_format *vbi; 248 const struct v4l2_sliced_vbi_format *sliced; 249 const struct v4l2_window *win; 250 const struct v4l2_sdr_format *sdr; 251 unsigned i; 252 253 pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); 254 switch (p->type) { 255 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 256 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 257 pix = &p->fmt.pix; 258 pr_cont(", width=%u, height=%u, " 259 "pixelformat=%c%c%c%c, field=%s, " 260 "bytesperline=%u, sizeimage=%u, colorspace=%d, " 261 "flags=0x%x, ycbcr_enc=%u, quantization=%u, " 262 "xfer_func=%u\n", 263 pix->width, pix->height, 264 (pix->pixelformat & 0xff), 265 (pix->pixelformat >> 8) & 0xff, 266 (pix->pixelformat >> 16) & 0xff, 267 (pix->pixelformat >> 24) & 0xff, 268 prt_names(pix->field, v4l2_field_names), 269 pix->bytesperline, pix->sizeimage, 270 pix->colorspace, pix->flags, pix->ycbcr_enc, 271 pix->quantization, pix->xfer_func); 272 break; 273 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 274 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 275 mp = &p->fmt.pix_mp; 276 pr_cont(", width=%u, height=%u, " 277 "format=%c%c%c%c, field=%s, " 278 "colorspace=%d, num_planes=%u, flags=0x%x, " 279 "ycbcr_enc=%u, quantization=%u, xfer_func=%u\n", 280 mp->width, mp->height, 281 (mp->pixelformat & 0xff), 282 (mp->pixelformat >> 8) & 0xff, 283 (mp->pixelformat >> 16) & 0xff, 284 (mp->pixelformat >> 24) & 0xff, 285 prt_names(mp->field, v4l2_field_names), 286 mp->colorspace, mp->num_planes, mp->flags, 287 mp->ycbcr_enc, mp->quantization, mp->xfer_func); 288 for (i = 0; i < mp->num_planes; i++) 289 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i, 290 mp->plane_fmt[i].bytesperline, 291 mp->plane_fmt[i].sizeimage); 292 break; 293 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 294 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 295 win = &p->fmt.win; 296 /* Note: we can't print the clip list here since the clips 297 * pointer is a userspace pointer, not a kernelspace 298 * pointer. */ 299 pr_cont(", wxh=%dx%d, x,y=%d,%d, field=%s, chromakey=0x%08x, clipcount=%u, clips=%p, bitmap=%p, global_alpha=0x%02x\n", 300 win->w.width, win->w.height, win->w.left, win->w.top, 301 prt_names(win->field, v4l2_field_names), 302 win->chromakey, win->clipcount, win->clips, 303 win->bitmap, win->global_alpha); 304 break; 305 case V4L2_BUF_TYPE_VBI_CAPTURE: 306 case V4L2_BUF_TYPE_VBI_OUTPUT: 307 vbi = &p->fmt.vbi; 308 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, " 309 "sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n", 310 vbi->sampling_rate, vbi->offset, 311 vbi->samples_per_line, 312 (vbi->sample_format & 0xff), 313 (vbi->sample_format >> 8) & 0xff, 314 (vbi->sample_format >> 16) & 0xff, 315 (vbi->sample_format >> 24) & 0xff, 316 vbi->start[0], vbi->start[1], 317 vbi->count[0], vbi->count[1]); 318 break; 319 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 320 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 321 sliced = &p->fmt.sliced; 322 pr_cont(", service_set=0x%08x, io_size=%d\n", 323 sliced->service_set, sliced->io_size); 324 for (i = 0; i < 24; i++) 325 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, 326 sliced->service_lines[0][i], 327 sliced->service_lines[1][i]); 328 break; 329 case V4L2_BUF_TYPE_SDR_CAPTURE: 330 case V4L2_BUF_TYPE_SDR_OUTPUT: 331 sdr = &p->fmt.sdr; 332 pr_cont(", pixelformat=%c%c%c%c\n", 333 (sdr->pixelformat >> 0) & 0xff, 334 (sdr->pixelformat >> 8) & 0xff, 335 (sdr->pixelformat >> 16) & 0xff, 336 (sdr->pixelformat >> 24) & 0xff); 337 break; 338 } 339} 340 341static void v4l_print_framebuffer(const void *arg, bool write_only) 342{ 343 const struct v4l2_framebuffer *p = arg; 344 345 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, " 346 "height=%u, pixelformat=%c%c%c%c, " 347 "bytesperline=%u, sizeimage=%u, colorspace=%d\n", 348 p->capability, p->flags, p->base, 349 p->fmt.width, p->fmt.height, 350 (p->fmt.pixelformat & 0xff), 351 (p->fmt.pixelformat >> 8) & 0xff, 352 (p->fmt.pixelformat >> 16) & 0xff, 353 (p->fmt.pixelformat >> 24) & 0xff, 354 p->fmt.bytesperline, p->fmt.sizeimage, 355 p->fmt.colorspace); 356} 357 358static void v4l_print_buftype(const void *arg, bool write_only) 359{ 360 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names)); 361} 362 363static void v4l_print_modulator(const void *arg, bool write_only) 364{ 365 const struct v4l2_modulator *p = arg; 366 367 if (write_only) 368 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans); 369 else 370 pr_cont("index=%u, name=%.*s, capability=0x%x, " 371 "rangelow=%u, rangehigh=%u, txsubchans=0x%x\n", 372 p->index, (int)sizeof(p->name), p->name, p->capability, 373 p->rangelow, p->rangehigh, p->txsubchans); 374} 375 376static void v4l_print_tuner(const void *arg, bool write_only) 377{ 378 const struct v4l2_tuner *p = arg; 379 380 if (write_only) 381 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode); 382 else 383 pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, " 384 "rangelow=%u, rangehigh=%u, signal=%u, afc=%d, " 385 "rxsubchans=0x%x, audmode=%u\n", 386 p->index, (int)sizeof(p->name), p->name, p->type, 387 p->capability, p->rangelow, 388 p->rangehigh, p->signal, p->afc, 389 p->rxsubchans, p->audmode); 390} 391 392static void v4l_print_frequency(const void *arg, bool write_only) 393{ 394 const struct v4l2_frequency *p = arg; 395 396 pr_cont("tuner=%u, type=%u, frequency=%u\n", 397 p->tuner, p->type, p->frequency); 398} 399 400static void v4l_print_standard(const void *arg, bool write_only) 401{ 402 const struct v4l2_standard *p = arg; 403 404 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, " 405 "framelines=%u\n", p->index, 406 (unsigned long long)p->id, (int)sizeof(p->name), p->name, 407 p->frameperiod.numerator, 408 p->frameperiod.denominator, 409 p->framelines); 410} 411 412static void v4l_print_std(const void *arg, bool write_only) 413{ 414 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg); 415} 416 417static void v4l_print_hw_freq_seek(const void *arg, bool write_only) 418{ 419 const struct v4l2_hw_freq_seek *p = arg; 420 421 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, " 422 "rangelow=%u, rangehigh=%u\n", 423 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing, 424 p->rangelow, p->rangehigh); 425} 426 427static void v4l_print_requestbuffers(const void *arg, bool write_only) 428{ 429 const struct v4l2_requestbuffers *p = arg; 430 431 pr_cont("count=%d, type=%s, memory=%s\n", 432 p->count, 433 prt_names(p->type, v4l2_type_names), 434 prt_names(p->memory, v4l2_memory_names)); 435} 436 437static void v4l_print_buffer(const void *arg, bool write_only) 438{ 439 const struct v4l2_buffer *p = arg; 440 const struct v4l2_timecode *tc = &p->timecode; 441 const struct v4l2_plane *plane; 442 int i; 443 444 pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, " 445 "flags=0x%08x, field=%s, sequence=%d, memory=%s", 446 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), 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, " 461 "offset/userptr=0x%lx, length=%d\n", 462 i, plane->bytesused, plane->data_offset, 463 plane->m.userptr, plane->length); 464 } 465 } else { 466 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n", 467 p->bytesused, p->m.userptr, p->length); 468 } 469 470 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, " 471 "flags=0x%08x, frames=%d, userbits=0x%08x\n", 472 tc->hours, tc->minutes, tc->seconds, 473 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits); 474} 475 476static void v4l_print_exportbuffer(const void *arg, bool write_only) 477{ 478 const struct v4l2_exportbuffer *p = arg; 479 480 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n", 481 p->fd, prt_names(p->type, v4l2_type_names), 482 p->index, p->plane, p->flags); 483} 484 485static void v4l_print_create_buffers(const void *arg, bool write_only) 486{ 487 const struct v4l2_create_buffers *p = arg; 488 489 pr_cont("index=%d, count=%d, memory=%s, ", 490 p->index, p->count, 491 prt_names(p->memory, v4l2_memory_names)); 492 v4l_print_format(&p->format, write_only); 493} 494 495static void v4l_print_streamparm(const void *arg, bool write_only) 496{ 497 const struct v4l2_streamparm *p = arg; 498 499 pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); 500 501 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 502 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) { 503 const struct v4l2_captureparm *c = &p->parm.capture; 504 505 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, " 506 "extendedmode=%d, readbuffers=%d\n", 507 c->capability, c->capturemode, 508 c->timeperframe.numerator, c->timeperframe.denominator, 509 c->extendedmode, c->readbuffers); 510 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT || 511 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { 512 const struct v4l2_outputparm *c = &p->parm.output; 513 514 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, " 515 "extendedmode=%d, writebuffers=%d\n", 516 c->capability, c->outputmode, 517 c->timeperframe.numerator, c->timeperframe.denominator, 518 c->extendedmode, c->writebuffers); 519 } else { 520 pr_cont("\n"); 521 } 522} 523 524static void v4l_print_queryctrl(const void *arg, bool write_only) 525{ 526 const struct v4l2_queryctrl *p = arg; 527 528 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, " 529 "step=%d, default=%d, flags=0x%08x\n", 530 p->id, p->type, (int)sizeof(p->name), p->name, 531 p->minimum, p->maximum, 532 p->step, p->default_value, p->flags); 533} 534 535static void v4l_print_query_ext_ctrl(const void *arg, bool write_only) 536{ 537 const struct v4l2_query_ext_ctrl *p = arg; 538 539 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%lld/%lld, " 540 "step=%lld, default=%lld, flags=0x%08x, elem_size=%u, elems=%u, " 541 "nr_of_dims=%u, dims=%u,%u,%u,%u\n", 542 p->id, p->type, (int)sizeof(p->name), p->name, 543 p->minimum, p->maximum, 544 p->step, p->default_value, p->flags, 545 p->elem_size, p->elems, p->nr_of_dims, 546 p->dims[0], p->dims[1], p->dims[2], p->dims[3]); 547} 548 549static void v4l_print_querymenu(const void *arg, bool write_only) 550{ 551 const struct v4l2_querymenu *p = arg; 552 553 pr_cont("id=0x%x, index=%d\n", p->id, p->index); 554} 555 556static void v4l_print_control(const void *arg, bool write_only) 557{ 558 const struct v4l2_control *p = arg; 559 560 pr_cont("id=0x%x, value=%d\n", p->id, p->value); 561} 562 563static void v4l_print_ext_controls(const void *arg, bool write_only) 564{ 565 const struct v4l2_ext_controls *p = arg; 566 int i; 567 568 pr_cont("class=0x%x, count=%d, error_idx=%d", 569 p->ctrl_class, p->count, p->error_idx); 570 for (i = 0; i < p->count; i++) { 571 if (!p->controls[i].size) 572 pr_cont(", id/val=0x%x/0x%x", 573 p->controls[i].id, p->controls[i].value); 574 else 575 pr_cont(", id/size=0x%x/%u", 576 p->controls[i].id, p->controls[i].size); 577 } 578 pr_cont("\n"); 579} 580 581static void v4l_print_cropcap(const void *arg, bool write_only) 582{ 583 const struct v4l2_cropcap *p = arg; 584 585 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, " 586 "defrect wxh=%dx%d, x,y=%d,%d, " 587 "pixelaspect %d/%d\n", 588 prt_names(p->type, v4l2_type_names), 589 p->bounds.width, p->bounds.height, 590 p->bounds.left, p->bounds.top, 591 p->defrect.width, p->defrect.height, 592 p->defrect.left, p->defrect.top, 593 p->pixelaspect.numerator, p->pixelaspect.denominator); 594} 595 596static void v4l_print_crop(const void *arg, bool write_only) 597{ 598 const struct v4l2_crop *p = arg; 599 600 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n", 601 prt_names(p->type, v4l2_type_names), 602 p->c.width, p->c.height, 603 p->c.left, p->c.top); 604} 605 606static void v4l_print_selection(const void *arg, bool write_only) 607{ 608 const struct v4l2_selection *p = arg; 609 610 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n", 611 prt_names(p->type, v4l2_type_names), 612 p->target, p->flags, 613 p->r.width, p->r.height, p->r.left, p->r.top); 614} 615 616static void v4l_print_jpegcompression(const void *arg, bool write_only) 617{ 618 const struct v4l2_jpegcompression *p = arg; 619 620 pr_cont("quality=%d, APPn=%d, APP_len=%d, " 621 "COM_len=%d, jpeg_markers=0x%x\n", 622 p->quality, p->APPn, p->APP_len, 623 p->COM_len, p->jpeg_markers); 624} 625 626static void v4l_print_enc_idx(const void *arg, bool write_only) 627{ 628 const struct v4l2_enc_idx *p = arg; 629 630 pr_cont("entries=%d, entries_cap=%d\n", 631 p->entries, p->entries_cap); 632} 633 634static void v4l_print_encoder_cmd(const void *arg, bool write_only) 635{ 636 const struct v4l2_encoder_cmd *p = arg; 637 638 pr_cont("cmd=%d, flags=0x%x\n", 639 p->cmd, p->flags); 640} 641 642static void v4l_print_decoder_cmd(const void *arg, bool write_only) 643{ 644 const struct v4l2_decoder_cmd *p = arg; 645 646 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags); 647 648 if (p->cmd == V4L2_DEC_CMD_START) 649 pr_info("speed=%d, format=%u\n", 650 p->start.speed, p->start.format); 651 else if (p->cmd == V4L2_DEC_CMD_STOP) 652 pr_info("pts=%llu\n", p->stop.pts); 653} 654 655static void v4l_print_dbg_chip_info(const void *arg, bool write_only) 656{ 657 const struct v4l2_dbg_chip_info *p = arg; 658 659 pr_cont("type=%u, ", p->match.type); 660 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 661 pr_cont("name=%.*s, ", 662 (int)sizeof(p->match.name), p->match.name); 663 else 664 pr_cont("addr=%u, ", p->match.addr); 665 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name); 666} 667 668static void v4l_print_dbg_register(const void *arg, bool write_only) 669{ 670 const struct v4l2_dbg_register *p = arg; 671 672 pr_cont("type=%u, ", p->match.type); 673 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 674 pr_cont("name=%.*s, ", 675 (int)sizeof(p->match.name), p->match.name); 676 else 677 pr_cont("addr=%u, ", p->match.addr); 678 pr_cont("reg=0x%llx, val=0x%llx\n", 679 p->reg, p->val); 680} 681 682static void v4l_print_dv_timings(const void *arg, bool write_only) 683{ 684 const struct v4l2_dv_timings *p = arg; 685 686 switch (p->type) { 687 case V4L2_DV_BT_656_1120: 688 pr_cont("type=bt-656/1120, interlaced=%u, " 689 "pixelclock=%llu, " 690 "width=%u, height=%u, polarities=0x%x, " 691 "hfrontporch=%u, hsync=%u, " 692 "hbackporch=%u, vfrontporch=%u, " 693 "vsync=%u, vbackporch=%u, " 694 "il_vfrontporch=%u, il_vsync=%u, " 695 "il_vbackporch=%u, standards=0x%x, flags=0x%x\n", 696 p->bt.interlaced, p->bt.pixelclock, 697 p->bt.width, p->bt.height, 698 p->bt.polarities, p->bt.hfrontporch, 699 p->bt.hsync, p->bt.hbackporch, 700 p->bt.vfrontporch, p->bt.vsync, 701 p->bt.vbackporch, p->bt.il_vfrontporch, 702 p->bt.il_vsync, p->bt.il_vbackporch, 703 p->bt.standards, p->bt.flags); 704 break; 705 default: 706 pr_cont("type=%d\n", p->type); 707 break; 708 } 709} 710 711static void v4l_print_enum_dv_timings(const void *arg, bool write_only) 712{ 713 const struct v4l2_enum_dv_timings *p = arg; 714 715 pr_cont("index=%u, ", p->index); 716 v4l_print_dv_timings(&p->timings, write_only); 717} 718 719static void v4l_print_dv_timings_cap(const void *arg, bool write_only) 720{ 721 const struct v4l2_dv_timings_cap *p = arg; 722 723 switch (p->type) { 724 case V4L2_DV_BT_656_1120: 725 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, " 726 "pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n", 727 p->bt.min_width, p->bt.max_width, 728 p->bt.min_height, p->bt.max_height, 729 p->bt.min_pixelclock, p->bt.max_pixelclock, 730 p->bt.standards, p->bt.capabilities); 731 break; 732 default: 733 pr_cont("type=%u\n", p->type); 734 break; 735 } 736} 737 738static void v4l_print_frmsizeenum(const void *arg, bool write_only) 739{ 740 const struct v4l2_frmsizeenum *p = arg; 741 742 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u", 743 p->index, 744 (p->pixel_format & 0xff), 745 (p->pixel_format >> 8) & 0xff, 746 (p->pixel_format >> 16) & 0xff, 747 (p->pixel_format >> 24) & 0xff, 748 p->type); 749 switch (p->type) { 750 case V4L2_FRMSIZE_TYPE_DISCRETE: 751 pr_cont(", wxh=%ux%u\n", 752 p->discrete.width, p->discrete.height); 753 break; 754 case V4L2_FRMSIZE_TYPE_STEPWISE: 755 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n", 756 p->stepwise.min_width, p->stepwise.min_height, 757 p->stepwise.step_width, p->stepwise.step_height, 758 p->stepwise.max_width, p->stepwise.max_height); 759 break; 760 case V4L2_FRMSIZE_TYPE_CONTINUOUS: 761 /* fall through */ 762 default: 763 pr_cont("\n"); 764 break; 765 } 766} 767 768static void v4l_print_frmivalenum(const void *arg, bool write_only) 769{ 770 const struct v4l2_frmivalenum *p = arg; 771 772 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u", 773 p->index, 774 (p->pixel_format & 0xff), 775 (p->pixel_format >> 8) & 0xff, 776 (p->pixel_format >> 16) & 0xff, 777 (p->pixel_format >> 24) & 0xff, 778 p->width, p->height, p->type); 779 switch (p->type) { 780 case V4L2_FRMIVAL_TYPE_DISCRETE: 781 pr_cont(", fps=%d/%d\n", 782 p->discrete.numerator, 783 p->discrete.denominator); 784 break; 785 case V4L2_FRMIVAL_TYPE_STEPWISE: 786 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n", 787 p->stepwise.min.numerator, 788 p->stepwise.min.denominator, 789 p->stepwise.max.numerator, 790 p->stepwise.max.denominator, 791 p->stepwise.step.numerator, 792 p->stepwise.step.denominator); 793 break; 794 case V4L2_FRMIVAL_TYPE_CONTINUOUS: 795 /* fall through */ 796 default: 797 pr_cont("\n"); 798 break; 799 } 800} 801 802static void v4l_print_event(const void *arg, bool write_only) 803{ 804 const struct v4l2_event *p = arg; 805 const struct v4l2_event_ctrl *c; 806 807 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, " 808 "timestamp=%lu.%9.9lu\n", 809 p->type, p->pending, p->sequence, p->id, 810 p->timestamp.tv_sec, p->timestamp.tv_nsec); 811 switch (p->type) { 812 case V4L2_EVENT_VSYNC: 813 printk(KERN_DEBUG "field=%s\n", 814 prt_names(p->u.vsync.field, v4l2_field_names)); 815 break; 816 case V4L2_EVENT_CTRL: 817 c = &p->u.ctrl; 818 printk(KERN_DEBUG "changes=0x%x, type=%u, ", 819 c->changes, c->type); 820 if (c->type == V4L2_CTRL_TYPE_INTEGER64) 821 pr_cont("value64=%lld, ", c->value64); 822 else 823 pr_cont("value=%d, ", c->value); 824 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, " 825 "default_value=%d\n", 826 c->flags, c->minimum, c->maximum, 827 c->step, c->default_value); 828 break; 829 case V4L2_EVENT_FRAME_SYNC: 830 pr_cont("frame_sequence=%u\n", 831 p->u.frame_sync.frame_sequence); 832 break; 833 } 834} 835 836static void v4l_print_event_subscription(const void *arg, bool write_only) 837{ 838 const struct v4l2_event_subscription *p = arg; 839 840 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n", 841 p->type, p->id, p->flags); 842} 843 844static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only) 845{ 846 const struct v4l2_sliced_vbi_cap *p = arg; 847 int i; 848 849 pr_cont("type=%s, service_set=0x%08x\n", 850 prt_names(p->type, v4l2_type_names), p->service_set); 851 for (i = 0; i < 24; i++) 852 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, 853 p->service_lines[0][i], 854 p->service_lines[1][i]); 855} 856 857static void v4l_print_freq_band(const void *arg, bool write_only) 858{ 859 const struct v4l2_frequency_band *p = arg; 860 861 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, " 862 "rangelow=%u, rangehigh=%u, modulation=0x%x\n", 863 p->tuner, p->type, p->index, 864 p->capability, p->rangelow, 865 p->rangehigh, p->modulation); 866} 867 868static void v4l_print_edid(const void *arg, bool write_only) 869{ 870 const struct v4l2_edid *p = arg; 871 872 pr_cont("pad=%u, start_block=%u, blocks=%u\n", 873 p->pad, p->start_block, p->blocks); 874} 875 876static void v4l_print_u32(const void *arg, bool write_only) 877{ 878 pr_cont("value=%u\n", *(const u32 *)arg); 879} 880 881static void v4l_print_newline(const void *arg, bool write_only) 882{ 883 pr_cont("\n"); 884} 885 886static void v4l_print_default(const void *arg, bool write_only) 887{ 888 pr_cont("driver-specific ioctl\n"); 889} 890 891static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) 892{ 893 __u32 i; 894 895 /* zero the reserved fields */ 896 c->reserved[0] = c->reserved[1] = 0; 897 for (i = 0; i < c->count; i++) 898 c->controls[i].reserved2[0] = 0; 899 900 /* V4L2_CID_PRIVATE_BASE cannot be used as control class 901 when using extended controls. 902 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL 903 is it allowed for backwards compatibility. 904 */ 905 if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE) 906 return 0; 907 if (c->ctrl_class == 0) 908 return 1; 909 /* Check that all controls are from the same control class. */ 910 for (i = 0; i < c->count; i++) { 911 if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) { 912 c->error_idx = i; 913 return 0; 914 } 915 } 916 return 1; 917} 918 919static int check_fmt(struct file *file, enum v4l2_buf_type type) 920{ 921 struct video_device *vfd = video_devdata(file); 922 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 923 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER; 924 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI; 925 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; 926 bool is_rx = vfd->vfl_dir != VFL_DIR_TX; 927 bool is_tx = vfd->vfl_dir != VFL_DIR_RX; 928 929 if (ops == NULL) 930 return -EINVAL; 931 932 switch (type) { 933 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 934 if (is_vid && is_rx && 935 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane)) 936 return 0; 937 break; 938 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 939 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_cap_mplane) 940 return 0; 941 break; 942 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 943 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay) 944 return 0; 945 break; 946 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 947 if (is_vid && is_tx && 948 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane)) 949 return 0; 950 break; 951 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 952 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane) 953 return 0; 954 break; 955 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 956 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay) 957 return 0; 958 break; 959 case V4L2_BUF_TYPE_VBI_CAPTURE: 960 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap) 961 return 0; 962 break; 963 case V4L2_BUF_TYPE_VBI_OUTPUT: 964 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out) 965 return 0; 966 break; 967 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 968 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap) 969 return 0; 970 break; 971 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 972 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out) 973 return 0; 974 break; 975 case V4L2_BUF_TYPE_SDR_CAPTURE: 976 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap) 977 return 0; 978 break; 979 case V4L2_BUF_TYPE_SDR_OUTPUT: 980 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out) 981 return 0; 982 break; 983 default: 984 break; 985 } 986 return -EINVAL; 987} 988 989static void v4l_sanitize_format(struct v4l2_format *fmt) 990{ 991 unsigned int offset; 992 993 /* 994 * The v4l2_pix_format structure has been extended with fields that were 995 * not previously required to be set to zero by applications. The priv 996 * field, when set to a magic value, indicates the the extended fields 997 * are valid. Otherwise they will contain undefined values. To simplify 998 * the API towards drivers zero the extended fields and set the priv 999 * field to the magic value when the extended pixel format structure 1000 * isn't used by applications. 1001 */ 1002 1003 if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && 1004 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) 1005 return; 1006 1007 if (fmt->fmt.pix.priv == V4L2_PIX_FMT_PRIV_MAGIC) 1008 return; 1009 1010 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1011 1012 offset = offsetof(struct v4l2_pix_format, priv) 1013 + sizeof(fmt->fmt.pix.priv); 1014 memset(((void *)&fmt->fmt.pix) + offset, 0, 1015 sizeof(fmt->fmt.pix) - offset); 1016} 1017 1018static int v4l_querycap(const struct v4l2_ioctl_ops *ops, 1019 struct file *file, void *fh, void *arg) 1020{ 1021 struct v4l2_capability *cap = (struct v4l2_capability *)arg; 1022 int ret; 1023 1024 cap->version = LINUX_VERSION_CODE; 1025 1026 ret = ops->vidioc_querycap(file, fh, cap); 1027 1028 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT; 1029 /* 1030 * Drivers MUST fill in device_caps, so check for this and 1031 * warn if it was forgotten. 1032 */ 1033 WARN(!(cap->capabilities & V4L2_CAP_DEVICE_CAPS) || 1034 !cap->device_caps, "Bad caps for driver %s, %x %x", 1035 cap->driver, cap->capabilities, cap->device_caps); 1036 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT; 1037 1038 return ret; 1039} 1040 1041static int v4l_s_input(const struct v4l2_ioctl_ops *ops, 1042 struct file *file, void *fh, void *arg) 1043{ 1044 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg); 1045} 1046 1047static int v4l_s_output(const struct v4l2_ioctl_ops *ops, 1048 struct file *file, void *fh, void *arg) 1049{ 1050 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg); 1051} 1052 1053static int v4l_g_priority(const struct v4l2_ioctl_ops *ops, 1054 struct file *file, void *fh, void *arg) 1055{ 1056 struct video_device *vfd; 1057 u32 *p = arg; 1058 1059 vfd = video_devdata(file); 1060 *p = v4l2_prio_max(vfd->prio); 1061 return 0; 1062} 1063 1064static int v4l_s_priority(const struct v4l2_ioctl_ops *ops, 1065 struct file *file, void *fh, void *arg) 1066{ 1067 struct video_device *vfd; 1068 struct v4l2_fh *vfh; 1069 u32 *p = arg; 1070 1071 vfd = video_devdata(file); 1072 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 1073 return -ENOTTY; 1074 vfh = file->private_data; 1075 return v4l2_prio_change(vfd->prio, &vfh->prio, *p); 1076} 1077 1078static int v4l_enuminput(const struct v4l2_ioctl_ops *ops, 1079 struct file *file, void *fh, void *arg) 1080{ 1081 struct video_device *vfd = video_devdata(file); 1082 struct v4l2_input *p = arg; 1083 1084 /* 1085 * We set the flags for CAP_DV_TIMINGS & 1086 * CAP_STD here based on ioctl handler provided by the 1087 * driver. If the driver doesn't support these 1088 * for a specific input, it must override these flags. 1089 */ 1090 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1091 p->capabilities |= V4L2_IN_CAP_STD; 1092 1093 return ops->vidioc_enum_input(file, fh, p); 1094} 1095 1096static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops, 1097 struct file *file, void *fh, void *arg) 1098{ 1099 struct video_device *vfd = video_devdata(file); 1100 struct v4l2_output *p = arg; 1101 1102 /* 1103 * We set the flags for CAP_DV_TIMINGS & 1104 * CAP_STD here based on ioctl handler provided by the 1105 * driver. If the driver doesn't support these 1106 * for a specific output, it must override these flags. 1107 */ 1108 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1109 p->capabilities |= V4L2_OUT_CAP_STD; 1110 1111 return ops->vidioc_enum_output(file, fh, p); 1112} 1113 1114static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) 1115{ 1116 const unsigned sz = sizeof(fmt->description); 1117 const char *descr = NULL; 1118 u32 flags = 0; 1119 1120 /* 1121 * We depart from the normal coding style here since the descriptions 1122 * should be aligned so it is easy to see which descriptions will be 1123 * longer than 31 characters (the max length for a description). 1124 * And frankly, this is easier to read anyway. 1125 * 1126 * Note that gcc will use O(log N) comparisons to find the right case. 1127 */ 1128 switch (fmt->pixelformat) { 1129 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1130 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break; 1131 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break; 1132 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break; 1133 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break; 1134 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break; 1135 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break; 1136 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break; 1137 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break; 1138 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break; 1139 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break; 1140 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break; 1141 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break; 1142 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break; 1143 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break; 1144 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break; 1145 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break; 1146 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break; 1147 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break; 1148 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break; 1149 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break; 1150 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break; 1151 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break; 1152 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break; 1153 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break; 1154 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break; 1155 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break; 1156 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break; 1157 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break; 1158 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break; 1159 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break; 1160 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break; 1161 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break; 1162 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break; 1163 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break; 1164 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break; 1165 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break; 1166 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break; 1167 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break; 1168 case V4L2_PIX_FMT_YUV422P: descr = "Planar YVU 4:2:2"; break; 1169 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break; 1170 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break; 1171 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break; 1172 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break; 1173 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break; 1174 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break; 1175 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break; 1176 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break; 1177 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break; 1178 case V4L2_PIX_FMT_HM12: descr = "YUV 4:2:0 (16x16 Macroblocks)"; break; 1179 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break; 1180 case V4L2_PIX_FMT_NV12: descr = "Y/CbCr 4:2:0"; break; 1181 case V4L2_PIX_FMT_NV21: descr = "Y/CrCb 4:2:0"; break; 1182 case V4L2_PIX_FMT_NV16: descr = "Y/CbCr 4:2:2"; break; 1183 case V4L2_PIX_FMT_NV61: descr = "Y/CrCb 4:2:2"; break; 1184 case V4L2_PIX_FMT_NV24: descr = "Y/CbCr 4:4:4"; break; 1185 case V4L2_PIX_FMT_NV42: descr = "Y/CrCb 4:4:4"; break; 1186 case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break; 1187 case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break; 1188 case V4L2_PIX_FMT_NV16M: descr = "Y/CbCr 4:2:2 (N-C)"; break; 1189 case V4L2_PIX_FMT_NV61M: descr = "Y/CrCb 4:2:2 (N-C)"; break; 1190 case V4L2_PIX_FMT_NV12MT: descr = "Y/CbCr 4:2:0 (64x32 MB, N-C)"; break; 1191 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/CbCr 4:2:0 (16x16 MB, N-C)"; break; 1192 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break; 1193 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break; 1194 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break; 1195 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break; 1196 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break; 1197 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break; 1198 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break; 1199 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break; 1200 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break; 1201 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break; 1202 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break; 1203 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break; 1204 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break; 1205 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break; 1206 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break; 1207 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break; 1208 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break; 1209 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break; 1210 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break; 1211 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break; 1212 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break; 1213 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break; 1214 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break; 1215 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break; 1216 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break; 1217 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break; 1218 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR (Exp.)"; break; 1219 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break; 1220 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break; 1221 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break; 1222 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break; 1223 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break; 1224 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break; 1225 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break; 1226 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break; 1227 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break; 1228 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break; 1229 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break; 1230 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break; 1231 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break; 1232 1233 default: 1234 /* Compressed formats */ 1235 flags = V4L2_FMT_FLAG_COMPRESSED; 1236 switch (fmt->pixelformat) { 1237 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1238 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break; 1239 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break; 1240 case V4L2_PIX_FMT_DV: descr = "1394"; break; 1241 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break; 1242 case V4L2_PIX_FMT_H264: descr = "H.264"; break; 1243 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break; 1244 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break; 1245 case V4L2_PIX_FMT_H263: descr = "H.263"; break; 1246 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break; 1247 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break; 1248 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 part 2 ES"; break; 1249 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break; 1250 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break; 1251 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break; 1252 case V4L2_PIX_FMT_VP8: descr = "VP8"; break; 1253 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break; 1254 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break; 1255 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break; 1256 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break; 1257 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break; 1258 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break; 1259 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break; 1260 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break; 1261 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break; 1262 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break; 1263 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break; 1264 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break; 1265 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break; 1266 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break; 1267 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break; 1268 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break; 1269 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break; 1270 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break; 1271 default: 1272 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat); 1273 if (fmt->description[0]) 1274 return; 1275 flags = 0; 1276 snprintf(fmt->description, sz, "%c%c%c%c%s", 1277 (char)(fmt->pixelformat & 0x7f), 1278 (char)((fmt->pixelformat >> 8) & 0x7f), 1279 (char)((fmt->pixelformat >> 16) & 0x7f), 1280 (char)((fmt->pixelformat >> 24) & 0x7f), 1281 (fmt->pixelformat & (1 << 31)) ? "-BE" : ""); 1282 break; 1283 } 1284 } 1285 1286 if (descr) 1287 WARN_ON(strlcpy(fmt->description, descr, sz) >= sz); 1288 fmt->flags = flags; 1289} 1290 1291static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops, 1292 struct file *file, void *fh, void *arg) 1293{ 1294 struct v4l2_fmtdesc *p = arg; 1295 struct video_device *vfd = video_devdata(file); 1296 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER; 1297 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; 1298 bool is_rx = vfd->vfl_dir != VFL_DIR_TX; 1299 bool is_tx = vfd->vfl_dir != VFL_DIR_RX; 1300 int ret = -EINVAL; 1301 1302 switch (p->type) { 1303 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1304 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_cap)) 1305 break; 1306 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg); 1307 break; 1308 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1309 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_cap_mplane)) 1310 break; 1311 ret = ops->vidioc_enum_fmt_vid_cap_mplane(file, fh, arg); 1312 break; 1313 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1314 if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_overlay)) 1315 break; 1316 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg); 1317 break; 1318 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1319 if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out)) 1320 break; 1321 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg); 1322 break; 1323 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1324 if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out_mplane)) 1325 break; 1326 ret = ops->vidioc_enum_fmt_vid_out_mplane(file, fh, arg); 1327 break; 1328 case V4L2_BUF_TYPE_SDR_CAPTURE: 1329 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_enum_fmt_sdr_cap)) 1330 break; 1331 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg); 1332 break; 1333 case V4L2_BUF_TYPE_SDR_OUTPUT: 1334 if (unlikely(!is_tx || !is_sdr || !ops->vidioc_enum_fmt_sdr_out)) 1335 break; 1336 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg); 1337 break; 1338 } 1339 if (ret == 0) 1340 v4l_fill_fmtdesc(p); 1341 return ret; 1342} 1343 1344static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, 1345 struct file *file, void *fh, void *arg) 1346{ 1347 struct v4l2_format *p = arg; 1348 struct video_device *vfd = video_devdata(file); 1349 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER; 1350 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; 1351 bool is_rx = vfd->vfl_dir != VFL_DIR_TX; 1352 bool is_tx = vfd->vfl_dir != VFL_DIR_RX; 1353 int ret; 1354 1355 /* 1356 * fmt can't be cleared for these overlay types due to the 'clips' 1357 * 'clipcount' and 'bitmap' pointers in struct v4l2_window. 1358 * Those are provided by the user. So handle these two overlay types 1359 * first, and then just do a simple memset for the other types. 1360 */ 1361 switch (p->type) { 1362 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1363 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: { 1364 struct v4l2_clip __user *clips = p->fmt.win.clips; 1365 u32 clipcount = p->fmt.win.clipcount; 1366 void __user *bitmap = p->fmt.win.bitmap; 1367 1368 memset(&p->fmt, 0, sizeof(p->fmt)); 1369 p->fmt.win.clips = clips; 1370 p->fmt.win.clipcount = clipcount; 1371 p->fmt.win.bitmap = bitmap; 1372 break; 1373 } 1374 default: 1375 memset(&p->fmt, 0, sizeof(p->fmt)); 1376 break; 1377 } 1378 1379 switch (p->type) { 1380 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1381 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap)) 1382 break; 1383 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1384 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg); 1385 /* just in case the driver zeroed it again */ 1386 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1387 return ret; 1388 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1389 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap_mplane)) 1390 break; 1391 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg); 1392 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1393 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_overlay)) 1394 break; 1395 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg); 1396 case V4L2_BUF_TYPE_VBI_CAPTURE: 1397 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_vbi_cap)) 1398 break; 1399 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg); 1400 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1401 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_cap)) 1402 break; 1403 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg); 1404 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1405 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out)) 1406 break; 1407 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1408 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg); 1409 /* just in case the driver zeroed it again */ 1410 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1411 return ret; 1412 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1413 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_mplane)) 1414 break; 1415 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg); 1416 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1417 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_overlay)) 1418 break; 1419 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg); 1420 case V4L2_BUF_TYPE_VBI_OUTPUT: 1421 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_vbi_out)) 1422 break; 1423 return ops->vidioc_g_fmt_vbi_out(file, fh, arg); 1424 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1425 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_out)) 1426 break; 1427 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg); 1428 case V4L2_BUF_TYPE_SDR_CAPTURE: 1429 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_g_fmt_sdr_cap)) 1430 break; 1431 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg); 1432 case V4L2_BUF_TYPE_SDR_OUTPUT: 1433 if (unlikely(!is_tx || !is_sdr || !ops->vidioc_g_fmt_sdr_out)) 1434 break; 1435 return ops->vidioc_g_fmt_sdr_out(file, fh, arg); 1436 } 1437 return -EINVAL; 1438} 1439 1440static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, 1441 struct file *file, void *fh, void *arg) 1442{ 1443 struct v4l2_format *p = arg; 1444 struct video_device *vfd = video_devdata(file); 1445 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER; 1446 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; 1447 bool is_rx = vfd->vfl_dir != VFL_DIR_TX; 1448 bool is_tx = vfd->vfl_dir != VFL_DIR_RX; 1449 int ret; 1450 1451 v4l_sanitize_format(p); 1452 1453 switch (p->type) { 1454 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1455 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap)) 1456 break; 1457 CLEAR_AFTER_FIELD(p, fmt.pix); 1458 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg); 1459 /* just in case the driver zeroed it again */ 1460 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1461 return ret; 1462 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1463 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap_mplane)) 1464 break; 1465 CLEAR_AFTER_FIELD(p, fmt.pix_mp); 1466 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg); 1467 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1468 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_overlay)) 1469 break; 1470 CLEAR_AFTER_FIELD(p, fmt.win); 1471 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg); 1472 case V4L2_BUF_TYPE_VBI_CAPTURE: 1473 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_vbi_cap)) 1474 break; 1475 CLEAR_AFTER_FIELD(p, fmt.vbi); 1476 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg); 1477 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1478 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_cap)) 1479 break; 1480 CLEAR_AFTER_FIELD(p, fmt.sliced); 1481 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg); 1482 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1483 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out)) 1484 break; 1485 CLEAR_AFTER_FIELD(p, fmt.pix); 1486 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg); 1487 /* just in case the driver zeroed it again */ 1488 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1489 return ret; 1490 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1491 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_mplane)) 1492 break; 1493 CLEAR_AFTER_FIELD(p, fmt.pix_mp); 1494 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg); 1495 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1496 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_overlay)) 1497 break; 1498 CLEAR_AFTER_FIELD(p, fmt.win); 1499 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg); 1500 case V4L2_BUF_TYPE_VBI_OUTPUT: 1501 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_vbi_out)) 1502 break; 1503 CLEAR_AFTER_FIELD(p, fmt.vbi); 1504 return ops->vidioc_s_fmt_vbi_out(file, fh, arg); 1505 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1506 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_out)) 1507 break; 1508 CLEAR_AFTER_FIELD(p, fmt.sliced); 1509 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg); 1510 case V4L2_BUF_TYPE_SDR_CAPTURE: 1511 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_s_fmt_sdr_cap)) 1512 break; 1513 CLEAR_AFTER_FIELD(p, fmt.sdr); 1514 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg); 1515 case V4L2_BUF_TYPE_SDR_OUTPUT: 1516 if (unlikely(!is_tx || !is_sdr || !ops->vidioc_s_fmt_sdr_out)) 1517 break; 1518 CLEAR_AFTER_FIELD(p, fmt.sdr); 1519 return ops->vidioc_s_fmt_sdr_out(file, fh, arg); 1520 } 1521 return -EINVAL; 1522} 1523 1524static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, 1525 struct file *file, void *fh, void *arg) 1526{ 1527 struct v4l2_format *p = arg; 1528 struct video_device *vfd = video_devdata(file); 1529 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER; 1530 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; 1531 bool is_rx = vfd->vfl_dir != VFL_DIR_TX; 1532 bool is_tx = vfd->vfl_dir != VFL_DIR_RX; 1533 int ret; 1534 1535 v4l_sanitize_format(p); 1536 1537 switch (p->type) { 1538 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1539 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap)) 1540 break; 1541 CLEAR_AFTER_FIELD(p, fmt.pix); 1542 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg); 1543 /* just in case the driver zeroed it again */ 1544 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1545 return ret; 1546 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1547 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap_mplane)) 1548 break; 1549 CLEAR_AFTER_FIELD(p, fmt.pix_mp); 1550 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg); 1551 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1552 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_overlay)) 1553 break; 1554 CLEAR_AFTER_FIELD(p, fmt.win); 1555 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg); 1556 case V4L2_BUF_TYPE_VBI_CAPTURE: 1557 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_vbi_cap)) 1558 break; 1559 CLEAR_AFTER_FIELD(p, fmt.vbi); 1560 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg); 1561 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1562 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_cap)) 1563 break; 1564 CLEAR_AFTER_FIELD(p, fmt.sliced); 1565 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg); 1566 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1567 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out)) 1568 break; 1569 CLEAR_AFTER_FIELD(p, fmt.pix); 1570 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg); 1571 /* just in case the driver zeroed it again */ 1572 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1573 return ret; 1574 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1575 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_mplane)) 1576 break; 1577 CLEAR_AFTER_FIELD(p, fmt.pix_mp); 1578 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg); 1579 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1580 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_overlay)) 1581 break; 1582 CLEAR_AFTER_FIELD(p, fmt.win); 1583 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg); 1584 case V4L2_BUF_TYPE_VBI_OUTPUT: 1585 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_vbi_out)) 1586 break; 1587 CLEAR_AFTER_FIELD(p, fmt.vbi); 1588 return ops->vidioc_try_fmt_vbi_out(file, fh, arg); 1589 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1590 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_out)) 1591 break; 1592 CLEAR_AFTER_FIELD(p, fmt.sliced); 1593 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg); 1594 case V4L2_BUF_TYPE_SDR_CAPTURE: 1595 if (unlikely(!is_rx || !is_sdr || !ops->vidioc_try_fmt_sdr_cap)) 1596 break; 1597 CLEAR_AFTER_FIELD(p, fmt.sdr); 1598 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg); 1599 case V4L2_BUF_TYPE_SDR_OUTPUT: 1600 if (unlikely(!is_tx || !is_sdr || !ops->vidioc_try_fmt_sdr_out)) 1601 break; 1602 CLEAR_AFTER_FIELD(p, fmt.sdr); 1603 return ops->vidioc_try_fmt_sdr_out(file, fh, arg); 1604 } 1605 return -EINVAL; 1606} 1607 1608static int v4l_streamon(const struct v4l2_ioctl_ops *ops, 1609 struct file *file, void *fh, void *arg) 1610{ 1611 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg); 1612} 1613 1614static int v4l_streamoff(const struct v4l2_ioctl_ops *ops, 1615 struct file *file, void *fh, void *arg) 1616{ 1617 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg); 1618} 1619 1620static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops, 1621 struct file *file, void *fh, void *arg) 1622{ 1623 struct video_device *vfd = video_devdata(file); 1624 struct v4l2_tuner *p = arg; 1625 int err; 1626 1627 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1628 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1629 err = ops->vidioc_g_tuner(file, fh, p); 1630 if (!err) 1631 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1632 return err; 1633} 1634 1635static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops, 1636 struct file *file, void *fh, void *arg) 1637{ 1638 struct video_device *vfd = video_devdata(file); 1639 struct v4l2_tuner *p = arg; 1640 1641 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1642 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1643 return ops->vidioc_s_tuner(file, fh, p); 1644} 1645 1646static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops, 1647 struct file *file, void *fh, void *arg) 1648{ 1649 struct video_device *vfd = video_devdata(file); 1650 struct v4l2_modulator *p = arg; 1651 int err; 1652 1653 if (vfd->vfl_type == VFL_TYPE_RADIO) 1654 p->type = V4L2_TUNER_RADIO; 1655 1656 err = ops->vidioc_g_modulator(file, fh, p); 1657 if (!err) 1658 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1659 return err; 1660} 1661 1662static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops, 1663 struct file *file, void *fh, void *arg) 1664{ 1665 struct video_device *vfd = video_devdata(file); 1666 struct v4l2_modulator *p = arg; 1667 1668 if (vfd->vfl_type == VFL_TYPE_RADIO) 1669 p->type = V4L2_TUNER_RADIO; 1670 1671 return ops->vidioc_s_modulator(file, fh, p); 1672} 1673 1674static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops, 1675 struct file *file, void *fh, void *arg) 1676{ 1677 struct video_device *vfd = video_devdata(file); 1678 struct v4l2_frequency *p = arg; 1679 1680 if (vfd->vfl_type == VFL_TYPE_SDR) 1681 p->type = V4L2_TUNER_SDR; 1682 else 1683 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1684 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1685 return ops->vidioc_g_frequency(file, fh, p); 1686} 1687 1688static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops, 1689 struct file *file, void *fh, void *arg) 1690{ 1691 struct video_device *vfd = video_devdata(file); 1692 const struct v4l2_frequency *p = arg; 1693 enum v4l2_tuner_type type; 1694 1695 if (vfd->vfl_type == VFL_TYPE_SDR) { 1696 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 1697 return -EINVAL; 1698 } else { 1699 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1700 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1701 if (type != p->type) 1702 return -EINVAL; 1703 } 1704 return ops->vidioc_s_frequency(file, fh, p); 1705} 1706 1707static int v4l_enumstd(const struct v4l2_ioctl_ops *ops, 1708 struct file *file, void *fh, void *arg) 1709{ 1710 struct video_device *vfd = video_devdata(file); 1711 struct v4l2_standard *p = arg; 1712 v4l2_std_id id = vfd->tvnorms, curr_id = 0; 1713 unsigned int index = p->index, i, j = 0; 1714 const char *descr = ""; 1715 1716 /* Return -ENODATA if the tvnorms for the current input 1717 or output is 0, meaning that it doesn't support this API. */ 1718 if (id == 0) 1719 return -ENODATA; 1720 1721 /* Return norm array in a canonical way */ 1722 for (i = 0; i <= index && id; i++) { 1723 /* last std value in the standards array is 0, so this 1724 while always ends there since (id & 0) == 0. */ 1725 while ((id & standards[j].std) != standards[j].std) 1726 j++; 1727 curr_id = standards[j].std; 1728 descr = standards[j].descr; 1729 j++; 1730 if (curr_id == 0) 1731 break; 1732 if (curr_id != V4L2_STD_PAL && 1733 curr_id != V4L2_STD_SECAM && 1734 curr_id != V4L2_STD_NTSC) 1735 id &= ~curr_id; 1736 } 1737 if (i <= index) 1738 return -EINVAL; 1739 1740 v4l2_video_std_construct(p, curr_id, descr); 1741 return 0; 1742} 1743 1744static int v4l_s_std(const struct v4l2_ioctl_ops *ops, 1745 struct file *file, void *fh, void *arg) 1746{ 1747 struct video_device *vfd = video_devdata(file); 1748 v4l2_std_id id = *(v4l2_std_id *)arg, norm; 1749 1750 norm = id & vfd->tvnorms; 1751 if (vfd->tvnorms && !norm) /* Check if std is supported */ 1752 return -EINVAL; 1753 1754 /* Calls the specific handler */ 1755 return ops->vidioc_s_std(file, fh, norm); 1756} 1757 1758static int v4l_querystd(const struct v4l2_ioctl_ops *ops, 1759 struct file *file, void *fh, void *arg) 1760{ 1761 struct video_device *vfd = video_devdata(file); 1762 v4l2_std_id *p = arg; 1763 1764 /* 1765 * If no signal is detected, then the driver should return 1766 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with 1767 * any standards that do not apply removed. 1768 * 1769 * This means that tuners, audio and video decoders can join 1770 * their efforts to improve the standards detection. 1771 */ 1772 *p = vfd->tvnorms; 1773 return ops->vidioc_querystd(file, fh, arg); 1774} 1775 1776static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops, 1777 struct file *file, void *fh, void *arg) 1778{ 1779 struct video_device *vfd = video_devdata(file); 1780 struct v4l2_hw_freq_seek *p = arg; 1781 enum v4l2_tuner_type type; 1782 1783 /* s_hw_freq_seek is not supported for SDR for now */ 1784 if (vfd->vfl_type == VFL_TYPE_SDR) 1785 return -EINVAL; 1786 1787 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1788 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1789 if (p->type != type) 1790 return -EINVAL; 1791 return ops->vidioc_s_hw_freq_seek(file, fh, p); 1792} 1793 1794static int v4l_overlay(const struct v4l2_ioctl_ops *ops, 1795 struct file *file, void *fh, void *arg) 1796{ 1797 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg); 1798} 1799 1800static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops, 1801 struct file *file, void *fh, void *arg) 1802{ 1803 struct v4l2_requestbuffers *p = arg; 1804 int ret = check_fmt(file, p->type); 1805 1806 if (ret) 1807 return ret; 1808 1809 CLEAR_AFTER_FIELD(p, memory); 1810 1811 return ops->vidioc_reqbufs(file, fh, p); 1812} 1813 1814static int v4l_querybuf(const struct v4l2_ioctl_ops *ops, 1815 struct file *file, void *fh, void *arg) 1816{ 1817 struct v4l2_buffer *p = arg; 1818 int ret = check_fmt(file, p->type); 1819 1820 return ret ? ret : ops->vidioc_querybuf(file, fh, p); 1821} 1822 1823static int v4l_qbuf(const struct v4l2_ioctl_ops *ops, 1824 struct file *file, void *fh, void *arg) 1825{ 1826 struct v4l2_buffer *p = arg; 1827 int ret = check_fmt(file, p->type); 1828 1829 return ret ? ret : ops->vidioc_qbuf(file, fh, p); 1830} 1831 1832static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops, 1833 struct file *file, void *fh, void *arg) 1834{ 1835 struct v4l2_buffer *p = arg; 1836 int ret = check_fmt(file, p->type); 1837 1838 return ret ? ret : ops->vidioc_dqbuf(file, fh, p); 1839} 1840 1841static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops, 1842 struct file *file, void *fh, void *arg) 1843{ 1844 struct v4l2_create_buffers *create = arg; 1845 int ret = check_fmt(file, create->format.type); 1846 1847 if (ret) 1848 return ret; 1849 1850 CLEAR_AFTER_FIELD(create, format); 1851 1852 v4l_sanitize_format(&create->format); 1853 1854 ret = ops->vidioc_create_bufs(file, fh, create); 1855 1856 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 1857 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT) 1858 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1859 1860 return ret; 1861} 1862 1863static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops, 1864 struct file *file, void *fh, void *arg) 1865{ 1866 struct v4l2_buffer *b = arg; 1867 int ret = check_fmt(file, b->type); 1868 1869 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b); 1870} 1871 1872static int v4l_g_parm(const struct v4l2_ioctl_ops *ops, 1873 struct file *file, void *fh, void *arg) 1874{ 1875 struct v4l2_streamparm *p = arg; 1876 v4l2_std_id std; 1877 int ret = check_fmt(file, p->type); 1878 1879 if (ret) 1880 return ret; 1881 if (ops->vidioc_g_parm) 1882 return ops->vidioc_g_parm(file, fh, p); 1883 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && 1884 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 1885 return -EINVAL; 1886 p->parm.capture.readbuffers = 2; 1887 ret = ops->vidioc_g_std(file, fh, &std); 1888 if (ret == 0) 1889 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe); 1890 return ret; 1891} 1892 1893static int v4l_s_parm(const struct v4l2_ioctl_ops *ops, 1894 struct file *file, void *fh, void *arg) 1895{ 1896 struct v4l2_streamparm *p = arg; 1897 int ret = check_fmt(file, p->type); 1898 1899 return ret ? ret : ops->vidioc_s_parm(file, fh, p); 1900} 1901 1902static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops, 1903 struct file *file, void *fh, void *arg) 1904{ 1905 struct video_device *vfd = video_devdata(file); 1906 struct v4l2_queryctrl *p = arg; 1907 struct v4l2_fh *vfh = 1908 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 1909 1910 if (vfh && vfh->ctrl_handler) 1911 return v4l2_queryctrl(vfh->ctrl_handler, p); 1912 if (vfd->ctrl_handler) 1913 return v4l2_queryctrl(vfd->ctrl_handler, p); 1914 if (ops->vidioc_queryctrl) 1915 return ops->vidioc_queryctrl(file, fh, p); 1916 return -ENOTTY; 1917} 1918 1919static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops, 1920 struct file *file, void *fh, void *arg) 1921{ 1922 struct video_device *vfd = video_devdata(file); 1923 struct v4l2_query_ext_ctrl *p = arg; 1924 struct v4l2_fh *vfh = 1925 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 1926 1927 if (vfh && vfh->ctrl_handler) 1928 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p); 1929 if (vfd->ctrl_handler) 1930 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p); 1931 if (ops->vidioc_query_ext_ctrl) 1932 return ops->vidioc_query_ext_ctrl(file, fh, p); 1933 return -ENOTTY; 1934} 1935 1936static int v4l_querymenu(const struct v4l2_ioctl_ops *ops, 1937 struct file *file, void *fh, void *arg) 1938{ 1939 struct video_device *vfd = video_devdata(file); 1940 struct v4l2_querymenu *p = arg; 1941 struct v4l2_fh *vfh = 1942 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 1943 1944 if (vfh && vfh->ctrl_handler) 1945 return v4l2_querymenu(vfh->ctrl_handler, p); 1946 if (vfd->ctrl_handler) 1947 return v4l2_querymenu(vfd->ctrl_handler, p); 1948 if (ops->vidioc_querymenu) 1949 return ops->vidioc_querymenu(file, fh, p); 1950 return -ENOTTY; 1951} 1952 1953static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops, 1954 struct file *file, void *fh, void *arg) 1955{ 1956 struct video_device *vfd = video_devdata(file); 1957 struct v4l2_control *p = arg; 1958 struct v4l2_fh *vfh = 1959 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 1960 struct v4l2_ext_controls ctrls; 1961 struct v4l2_ext_control ctrl; 1962 1963 if (vfh && vfh->ctrl_handler) 1964 return v4l2_g_ctrl(vfh->ctrl_handler, p); 1965 if (vfd->ctrl_handler) 1966 return v4l2_g_ctrl(vfd->ctrl_handler, p); 1967 if (ops->vidioc_g_ctrl) 1968 return ops->vidioc_g_ctrl(file, fh, p); 1969 if (ops->vidioc_g_ext_ctrls == NULL) 1970 return -ENOTTY; 1971 1972 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id); 1973 ctrls.count = 1; 1974 ctrls.controls = &ctrl; 1975 ctrl.id = p->id; 1976 ctrl.value = p->value; 1977 if (check_ext_ctrls(&ctrls, 1)) { 1978 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls); 1979 1980 if (ret == 0) 1981 p->value = ctrl.value; 1982 return ret; 1983 } 1984 return -EINVAL; 1985} 1986 1987static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, 1988 struct file *file, void *fh, void *arg) 1989{ 1990 struct video_device *vfd = video_devdata(file); 1991 struct v4l2_control *p = arg; 1992 struct v4l2_fh *vfh = 1993 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 1994 struct v4l2_ext_controls ctrls; 1995 struct v4l2_ext_control ctrl; 1996 1997 if (vfh && vfh->ctrl_handler) 1998 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p); 1999 if (vfd->ctrl_handler) 2000 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p); 2001 if (ops->vidioc_s_ctrl) 2002 return ops->vidioc_s_ctrl(file, fh, p); 2003 if (ops->vidioc_s_ext_ctrls == NULL) 2004 return -ENOTTY; 2005 2006 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id); 2007 ctrls.count = 1; 2008 ctrls.controls = &ctrl; 2009 ctrl.id = p->id; 2010 ctrl.value = p->value; 2011 if (check_ext_ctrls(&ctrls, 1)) 2012 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls); 2013 return -EINVAL; 2014} 2015 2016static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2017 struct file *file, void *fh, void *arg) 2018{ 2019 struct video_device *vfd = video_devdata(file); 2020 struct v4l2_ext_controls *p = arg; 2021 struct v4l2_fh *vfh = 2022 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2023 2024 p->error_idx = p->count; 2025 if (vfh && vfh->ctrl_handler) 2026 return v4l2_g_ext_ctrls(vfh->ctrl_handler, p); 2027 if (vfd->ctrl_handler) 2028 return v4l2_g_ext_ctrls(vfd->ctrl_handler, p); 2029 if (ops->vidioc_g_ext_ctrls == NULL) 2030 return -ENOTTY; 2031 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) : 2032 -EINVAL; 2033} 2034 2035static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2036 struct file *file, void *fh, void *arg) 2037{ 2038 struct video_device *vfd = video_devdata(file); 2039 struct v4l2_ext_controls *p = arg; 2040 struct v4l2_fh *vfh = 2041 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2042 2043 p->error_idx = p->count; 2044 if (vfh && vfh->ctrl_handler) 2045 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, p); 2046 if (vfd->ctrl_handler) 2047 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, p); 2048 if (ops->vidioc_s_ext_ctrls == NULL) 2049 return -ENOTTY; 2050 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) : 2051 -EINVAL; 2052} 2053 2054static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2055 struct file *file, void *fh, void *arg) 2056{ 2057 struct video_device *vfd = video_devdata(file); 2058 struct v4l2_ext_controls *p = arg; 2059 struct v4l2_fh *vfh = 2060 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2061 2062 p->error_idx = p->count; 2063 if (vfh && vfh->ctrl_handler) 2064 return v4l2_try_ext_ctrls(vfh->ctrl_handler, p); 2065 if (vfd->ctrl_handler) 2066 return v4l2_try_ext_ctrls(vfd->ctrl_handler, p); 2067 if (ops->vidioc_try_ext_ctrls == NULL) 2068 return -ENOTTY; 2069 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) : 2070 -EINVAL; 2071} 2072 2073static int v4l_g_crop(const struct v4l2_ioctl_ops *ops, 2074 struct file *file, void *fh, void *arg) 2075{ 2076 struct v4l2_crop *p = arg; 2077 struct v4l2_selection s = { 2078 .type = p->type, 2079 }; 2080 int ret; 2081 2082 if (ops->vidioc_g_crop) 2083 return ops->vidioc_g_crop(file, fh, p); 2084 /* simulate capture crop using selection api */ 2085 2086 /* crop means compose for output devices */ 2087 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2088 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE; 2089 else 2090 s.target = V4L2_SEL_TGT_CROP_ACTIVE; 2091 2092 ret = ops->vidioc_g_selection(file, fh, &s); 2093 2094 /* copying results to old structure on success */ 2095 if (!ret) 2096 p->c = s.r; 2097 return ret; 2098} 2099 2100static int v4l_s_crop(const struct v4l2_ioctl_ops *ops, 2101 struct file *file, void *fh, void *arg) 2102{ 2103 struct v4l2_crop *p = arg; 2104 struct v4l2_selection s = { 2105 .type = p->type, 2106 .r = p->c, 2107 }; 2108 2109 if (ops->vidioc_s_crop) 2110 return ops->vidioc_s_crop(file, fh, p); 2111 /* simulate capture crop using selection api */ 2112 2113 /* crop means compose for output devices */ 2114 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2115 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE; 2116 else 2117 s.target = V4L2_SEL_TGT_CROP_ACTIVE; 2118 2119 return ops->vidioc_s_selection(file, fh, &s); 2120} 2121 2122static int v4l_cropcap(const struct v4l2_ioctl_ops *ops, 2123 struct file *file, void *fh, void *arg) 2124{ 2125 struct v4l2_cropcap *p = arg; 2126 2127 if (ops->vidioc_g_selection) { 2128 struct v4l2_selection s = { .type = p->type }; 2129 int ret; 2130 2131 /* obtaining bounds */ 2132 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2133 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS; 2134 else 2135 s.target = V4L2_SEL_TGT_CROP_BOUNDS; 2136 2137 ret = ops->vidioc_g_selection(file, fh, &s); 2138 if (ret) 2139 return ret; 2140 p->bounds = s.r; 2141 2142 /* obtaining defrect */ 2143 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2144 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT; 2145 else 2146 s.target = V4L2_SEL_TGT_CROP_DEFAULT; 2147 2148 ret = ops->vidioc_g_selection(file, fh, &s); 2149 if (ret) 2150 return ret; 2151 p->defrect = s.r; 2152 } 2153 2154 /* setting trivial pixelaspect */ 2155 p->pixelaspect.numerator = 1; 2156 p->pixelaspect.denominator = 1; 2157 2158 if (ops->vidioc_cropcap) 2159 return ops->vidioc_cropcap(file, fh, p); 2160 2161 return 0; 2162} 2163 2164static int v4l_log_status(const struct v4l2_ioctl_ops *ops, 2165 struct file *file, void *fh, void *arg) 2166{ 2167 struct video_device *vfd = video_devdata(file); 2168 int ret; 2169 2170 if (vfd->v4l2_dev) 2171 pr_info("%s: ================= START STATUS =================\n", 2172 vfd->v4l2_dev->name); 2173 ret = ops->vidioc_log_status(file, fh); 2174 if (vfd->v4l2_dev) 2175 pr_info("%s: ================== END STATUS ==================\n", 2176 vfd->v4l2_dev->name); 2177 return ret; 2178} 2179 2180static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops, 2181 struct file *file, void *fh, void *arg) 2182{ 2183#ifdef CONFIG_VIDEO_ADV_DEBUG 2184 struct v4l2_dbg_register *p = arg; 2185 struct video_device *vfd = video_devdata(file); 2186 struct v4l2_subdev *sd; 2187 int idx = 0; 2188 2189 if (!capable(CAP_SYS_ADMIN)) 2190 return -EPERM; 2191 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2192 if (vfd->v4l2_dev == NULL) 2193 return -EINVAL; 2194 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2195 if (p->match.addr == idx++) 2196 return v4l2_subdev_call(sd, core, g_register, p); 2197 return -EINVAL; 2198 } 2199 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2200 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2201 return ops->vidioc_g_register(file, fh, p); 2202 return -EINVAL; 2203#else 2204 return -ENOTTY; 2205#endif 2206} 2207 2208static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops, 2209 struct file *file, void *fh, void *arg) 2210{ 2211#ifdef CONFIG_VIDEO_ADV_DEBUG 2212 const struct v4l2_dbg_register *p = arg; 2213 struct video_device *vfd = video_devdata(file); 2214 struct v4l2_subdev *sd; 2215 int idx = 0; 2216 2217 if (!capable(CAP_SYS_ADMIN)) 2218 return -EPERM; 2219 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2220 if (vfd->v4l2_dev == NULL) 2221 return -EINVAL; 2222 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2223 if (p->match.addr == idx++) 2224 return v4l2_subdev_call(sd, core, s_register, p); 2225 return -EINVAL; 2226 } 2227 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2228 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2229 return ops->vidioc_s_register(file, fh, p); 2230 return -EINVAL; 2231#else 2232 return -ENOTTY; 2233#endif 2234} 2235 2236static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops, 2237 struct file *file, void *fh, void *arg) 2238{ 2239#ifdef CONFIG_VIDEO_ADV_DEBUG 2240 struct video_device *vfd = video_devdata(file); 2241 struct v4l2_dbg_chip_info *p = arg; 2242 struct v4l2_subdev *sd; 2243 int idx = 0; 2244 2245 switch (p->match.type) { 2246 case V4L2_CHIP_MATCH_BRIDGE: 2247 if (ops->vidioc_s_register) 2248 p->flags |= V4L2_CHIP_FL_WRITABLE; 2249 if (ops->vidioc_g_register) 2250 p->flags |= V4L2_CHIP_FL_READABLE; 2251 strlcpy(p->name, vfd->v4l2_dev->name, sizeof(p->name)); 2252 if (ops->vidioc_g_chip_info) 2253 return ops->vidioc_g_chip_info(file, fh, arg); 2254 if (p->match.addr) 2255 return -EINVAL; 2256 return 0; 2257 2258 case V4L2_CHIP_MATCH_SUBDEV: 2259 if (vfd->v4l2_dev == NULL) 2260 break; 2261 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) { 2262 if (p->match.addr != idx++) 2263 continue; 2264 if (sd->ops->core && sd->ops->core->s_register) 2265 p->flags |= V4L2_CHIP_FL_WRITABLE; 2266 if (sd->ops->core && sd->ops->core->g_register) 2267 p->flags |= V4L2_CHIP_FL_READABLE; 2268 strlcpy(p->name, sd->name, sizeof(p->name)); 2269 return 0; 2270 } 2271 break; 2272 } 2273 return -EINVAL; 2274#else 2275 return -ENOTTY; 2276#endif 2277} 2278 2279static int v4l_dqevent(const struct v4l2_ioctl_ops *ops, 2280 struct file *file, void *fh, void *arg) 2281{ 2282 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK); 2283} 2284 2285static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops, 2286 struct file *file, void *fh, void *arg) 2287{ 2288 return ops->vidioc_subscribe_event(fh, arg); 2289} 2290 2291static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops, 2292 struct file *file, void *fh, void *arg) 2293{ 2294 return ops->vidioc_unsubscribe_event(fh, arg); 2295} 2296 2297static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops, 2298 struct file *file, void *fh, void *arg) 2299{ 2300 struct v4l2_sliced_vbi_cap *p = arg; 2301 int ret = check_fmt(file, p->type); 2302 2303 if (ret) 2304 return ret; 2305 2306 /* Clear up to type, everything after type is zeroed already */ 2307 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type)); 2308 2309 return ops->vidioc_g_sliced_vbi_cap(file, fh, p); 2310} 2311 2312static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops, 2313 struct file *file, void *fh, void *arg) 2314{ 2315 struct video_device *vfd = video_devdata(file); 2316 struct v4l2_frequency_band *p = arg; 2317 enum v4l2_tuner_type type; 2318 int err; 2319 2320 if (vfd->vfl_type == VFL_TYPE_SDR) { 2321 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 2322 return -EINVAL; 2323 type = p->type; 2324 } else { 2325 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2326 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2327 if (type != p->type) 2328 return -EINVAL; 2329 } 2330 if (ops->vidioc_enum_freq_bands) { 2331 err = ops->vidioc_enum_freq_bands(file, fh, p); 2332 if (err != -ENOTTY) 2333 return err; 2334 } 2335 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) { 2336 struct v4l2_tuner t = { 2337 .index = p->tuner, 2338 .type = type, 2339 }; 2340 2341 if (p->index) 2342 return -EINVAL; 2343 err = ops->vidioc_g_tuner(file, fh, &t); 2344 if (err) 2345 return err; 2346 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2347 p->rangelow = t.rangelow; 2348 p->rangehigh = t.rangehigh; 2349 p->modulation = (type == V4L2_TUNER_RADIO) ? 2350 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2351 return 0; 2352 } 2353 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) { 2354 struct v4l2_modulator m = { 2355 .index = p->tuner, 2356 }; 2357 2358 if (type != V4L2_TUNER_RADIO) 2359 return -EINVAL; 2360 if (p->index) 2361 return -EINVAL; 2362 err = ops->vidioc_g_modulator(file, fh, &m); 2363 if (err) 2364 return err; 2365 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2366 p->rangelow = m.rangelow; 2367 p->rangehigh = m.rangehigh; 2368 p->modulation = (type == V4L2_TUNER_RADIO) ? 2369 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2370 return 0; 2371 } 2372 return -ENOTTY; 2373} 2374 2375struct v4l2_ioctl_info { 2376 unsigned int ioctl; 2377 u32 flags; 2378 const char * const name; 2379 union { 2380 u32 offset; 2381 int (*func)(const struct v4l2_ioctl_ops *ops, 2382 struct file *file, void *fh, void *p); 2383 } u; 2384 void (*debug)(const void *arg, bool write_only); 2385}; 2386 2387/* This control needs a priority check */ 2388#define INFO_FL_PRIO (1 << 0) 2389/* This control can be valid if the filehandle passes a control handler. */ 2390#define INFO_FL_CTRL (1 << 1) 2391/* This is a standard ioctl, no need for special code */ 2392#define INFO_FL_STD (1 << 2) 2393/* This is ioctl has its own function */ 2394#define INFO_FL_FUNC (1 << 3) 2395/* Queuing ioctl */ 2396#define INFO_FL_QUEUE (1 << 4) 2397/* Zero struct from after the field to the end */ 2398#define INFO_FL_CLEAR(v4l2_struct, field) \ 2399 ((offsetof(struct v4l2_struct, field) + \ 2400 sizeof(((struct v4l2_struct *)0)->field)) << 16) 2401#define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16) 2402 2403#define IOCTL_INFO_STD(_ioctl, _vidioc, _debug, _flags) \ 2404 [_IOC_NR(_ioctl)] = { \ 2405 .ioctl = _ioctl, \ 2406 .flags = _flags | INFO_FL_STD, \ 2407 .name = #_ioctl, \ 2408 .u.offset = offsetof(struct v4l2_ioctl_ops, _vidioc), \ 2409 .debug = _debug, \ 2410 } 2411 2412#define IOCTL_INFO_FNC(_ioctl, _func, _debug, _flags) \ 2413 [_IOC_NR(_ioctl)] = { \ 2414 .ioctl = _ioctl, \ 2415 .flags = _flags | INFO_FL_FUNC, \ 2416 .name = #_ioctl, \ 2417 .u.func = _func, \ 2418 .debug = _debug, \ 2419 } 2420 2421static struct v4l2_ioctl_info v4l2_ioctls[] = { 2422 IOCTL_INFO_FNC(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0), 2423 IOCTL_INFO_FNC(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)), 2424 IOCTL_INFO_FNC(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0), 2425 IOCTL_INFO_FNC(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO), 2426 IOCTL_INFO_FNC(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2427 IOCTL_INFO_FNC(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)), 2428 IOCTL_INFO_STD(VIDIOC_G_FBUF, vidioc_g_fbuf, v4l_print_framebuffer, 0), 2429 IOCTL_INFO_STD(VIDIOC_S_FBUF, vidioc_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO), 2430 IOCTL_INFO_FNC(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO), 2431 IOCTL_INFO_FNC(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE), 2432 IOCTL_INFO_STD(VIDIOC_EXPBUF, vidioc_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)), 2433 IOCTL_INFO_FNC(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE), 2434 IOCTL_INFO_FNC(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2435 IOCTL_INFO_FNC(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2436 IOCTL_INFO_FNC(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)), 2437 IOCTL_INFO_FNC(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO), 2438 IOCTL_INFO_STD(VIDIOC_G_STD, vidioc_g_std, v4l_print_std, 0), 2439 IOCTL_INFO_FNC(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO), 2440 IOCTL_INFO_FNC(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)), 2441 IOCTL_INFO_FNC(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)), 2442 IOCTL_INFO_FNC(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)), 2443 IOCTL_INFO_FNC(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL), 2444 IOCTL_INFO_FNC(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)), 2445 IOCTL_INFO_FNC(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO), 2446 IOCTL_INFO_STD(VIDIOC_G_AUDIO, vidioc_g_audio, v4l_print_audio, 0), 2447 IOCTL_INFO_STD(VIDIOC_S_AUDIO, vidioc_s_audio, v4l_print_audio, INFO_FL_PRIO), 2448 IOCTL_INFO_FNC(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)), 2449 IOCTL_INFO_FNC(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)), 2450 IOCTL_INFO_STD(VIDIOC_G_INPUT, vidioc_g_input, v4l_print_u32, 0), 2451 IOCTL_INFO_FNC(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO), 2452 IOCTL_INFO_STD(VIDIOC_G_EDID, vidioc_g_edid, v4l_print_edid, 0), 2453 IOCTL_INFO_STD(VIDIOC_S_EDID, vidioc_s_edid, v4l_print_edid, INFO_FL_PRIO), 2454 IOCTL_INFO_STD(VIDIOC_G_OUTPUT, vidioc_g_output, v4l_print_u32, 0), 2455 IOCTL_INFO_FNC(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO), 2456 IOCTL_INFO_FNC(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)), 2457 IOCTL_INFO_STD(VIDIOC_G_AUDOUT, vidioc_g_audout, v4l_print_audioout, 0), 2458 IOCTL_INFO_STD(VIDIOC_S_AUDOUT, vidioc_s_audout, v4l_print_audioout, INFO_FL_PRIO), 2459 IOCTL_INFO_FNC(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)), 2460 IOCTL_INFO_FNC(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO), 2461 IOCTL_INFO_FNC(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)), 2462 IOCTL_INFO_FNC(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO), 2463 IOCTL_INFO_FNC(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)), 2464 IOCTL_INFO_FNC(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)), 2465 IOCTL_INFO_FNC(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO), 2466 IOCTL_INFO_STD(VIDIOC_G_SELECTION, vidioc_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)), 2467 IOCTL_INFO_STD(VIDIOC_S_SELECTION, vidioc_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)), 2468 IOCTL_INFO_STD(VIDIOC_G_JPEGCOMP, vidioc_g_jpegcomp, v4l_print_jpegcompression, 0), 2469 IOCTL_INFO_STD(VIDIOC_S_JPEGCOMP, vidioc_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO), 2470 IOCTL_INFO_FNC(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0), 2471 IOCTL_INFO_FNC(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0), 2472 IOCTL_INFO_STD(VIDIOC_ENUMAUDIO, vidioc_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)), 2473 IOCTL_INFO_STD(VIDIOC_ENUMAUDOUT, vidioc_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)), 2474 IOCTL_INFO_FNC(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0), 2475 IOCTL_INFO_FNC(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO), 2476 IOCTL_INFO_FNC(VIDIOC_G_SLICED_VBI_CAP, v4l_g_sliced_vbi_cap, v4l_print_sliced_vbi_cap, INFO_FL_CLEAR(v4l2_sliced_vbi_cap, type)), 2477 IOCTL_INFO_FNC(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0), 2478 IOCTL_INFO_FNC(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL), 2479 IOCTL_INFO_FNC(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL), 2480 IOCTL_INFO_FNC(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL), 2481 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMESIZES, vidioc_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)), 2482 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMEINTERVALS, vidioc_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)), 2483 IOCTL_INFO_STD(VIDIOC_G_ENC_INDEX, vidioc_g_enc_index, v4l_print_enc_idx, 0), 2484 IOCTL_INFO_STD(VIDIOC_ENCODER_CMD, vidioc_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2485 IOCTL_INFO_STD(VIDIOC_TRY_ENCODER_CMD, vidioc_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2486 IOCTL_INFO_STD(VIDIOC_DECODER_CMD, vidioc_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO), 2487 IOCTL_INFO_STD(VIDIOC_TRY_DECODER_CMD, vidioc_try_decoder_cmd, v4l_print_decoder_cmd, 0), 2488 IOCTL_INFO_FNC(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0), 2489 IOCTL_INFO_FNC(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0), 2490 IOCTL_INFO_FNC(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO), 2491 IOCTL_INFO_STD(VIDIOC_S_DV_TIMINGS, vidioc_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO), 2492 IOCTL_INFO_STD(VIDIOC_G_DV_TIMINGS, vidioc_g_dv_timings, v4l_print_dv_timings, 0), 2493 IOCTL_INFO_FNC(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0), 2494 IOCTL_INFO_FNC(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0), 2495 IOCTL_INFO_FNC(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0), 2496 IOCTL_INFO_FNC(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2497 IOCTL_INFO_FNC(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE), 2498 IOCTL_INFO_STD(VIDIOC_ENUM_DV_TIMINGS, vidioc_enum_dv_timings, v4l_print_enum_dv_timings, 0), 2499 IOCTL_INFO_STD(VIDIOC_QUERY_DV_TIMINGS, vidioc_query_dv_timings, v4l_print_dv_timings, 0), 2500 IOCTL_INFO_STD(VIDIOC_DV_TIMINGS_CAP, vidioc_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, type)), 2501 IOCTL_INFO_FNC(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0), 2502 IOCTL_INFO_FNC(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)), 2503 IOCTL_INFO_FNC(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)), 2504}; 2505#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) 2506 2507bool v4l2_is_known_ioctl(unsigned int cmd) 2508{ 2509 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2510 return false; 2511 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd; 2512} 2513 2514struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd) 2515{ 2516 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2517 return vdev->lock; 2518 if (test_bit(_IOC_NR(cmd), vdev->disable_locking)) 2519 return NULL; 2520 if (vdev->queue && vdev->queue->lock && 2521 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) 2522 return vdev->queue->lock; 2523 return vdev->lock; 2524} 2525 2526/* Common ioctl debug function. This function can be used by 2527 external ioctl messages as well as internal V4L ioctl */ 2528void v4l_printk_ioctl(const char *prefix, unsigned int cmd) 2529{ 2530 const char *dir, *type; 2531 2532 if (prefix) 2533 printk(KERN_DEBUG "%s: ", prefix); 2534 2535 switch (_IOC_TYPE(cmd)) { 2536 case 'd': 2537 type = "v4l2_int"; 2538 break; 2539 case 'V': 2540 if (_IOC_NR(cmd) >= V4L2_IOCTLS) { 2541 type = "v4l2"; 2542 break; 2543 } 2544 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name); 2545 return; 2546 default: 2547 type = "unknown"; 2548 break; 2549 } 2550 2551 switch (_IOC_DIR(cmd)) { 2552 case _IOC_NONE: dir = "--"; break; 2553 case _IOC_READ: dir = "r-"; break; 2554 case _IOC_WRITE: dir = "-w"; break; 2555 case _IOC_READ | _IOC_WRITE: dir = "rw"; break; 2556 default: dir = "*ERR*"; break; 2557 } 2558 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)", 2559 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd); 2560} 2561EXPORT_SYMBOL(v4l_printk_ioctl); 2562 2563static long __video_do_ioctl(struct file *file, 2564 unsigned int cmd, void *arg) 2565{ 2566 struct video_device *vfd = video_devdata(file); 2567 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 2568 bool write_only = false; 2569 struct v4l2_ioctl_info default_info; 2570 const struct v4l2_ioctl_info *info; 2571 void *fh = file->private_data; 2572 struct v4l2_fh *vfh = NULL; 2573 int dev_debug = vfd->dev_debug; 2574 long ret = -ENOTTY; 2575 2576 if (ops == NULL) { 2577 pr_warn("%s: has no ioctl_ops.\n", 2578 video_device_node_name(vfd)); 2579 return ret; 2580 } 2581 2582 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 2583 vfh = file->private_data; 2584 2585 if (v4l2_is_known_ioctl(cmd)) { 2586 info = &v4l2_ioctls[_IOC_NR(cmd)]; 2587 2588 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) && 2589 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler)) 2590 goto done; 2591 2592 if (vfh && (info->flags & INFO_FL_PRIO)) { 2593 ret = v4l2_prio_check(vfd->prio, vfh->prio); 2594 if (ret) 2595 goto done; 2596 } 2597 } else { 2598 default_info.ioctl = cmd; 2599 default_info.flags = 0; 2600 default_info.debug = v4l_print_default; 2601 info = &default_info; 2602 } 2603 2604 write_only = _IOC_DIR(cmd) == _IOC_WRITE; 2605 if (info->flags & INFO_FL_STD) { 2606 typedef int (*vidioc_op)(struct file *file, void *fh, void *p); 2607 const void *p = vfd->ioctl_ops; 2608 const vidioc_op *vidioc = p + info->u.offset; 2609 2610 ret = (*vidioc)(file, fh, arg); 2611 } else if (info->flags & INFO_FL_FUNC) { 2612 ret = info->u.func(ops, file, fh, arg); 2613 } else if (!ops->vidioc_default) { 2614 ret = -ENOTTY; 2615 } else { 2616 ret = ops->vidioc_default(file, fh, 2617 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0, 2618 cmd, arg); 2619 } 2620 2621done: 2622 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) { 2623 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) && 2624 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF)) 2625 return ret; 2626 2627 v4l_printk_ioctl(video_device_node_name(vfd), cmd); 2628 if (ret < 0) 2629 pr_cont(": error %ld", ret); 2630 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG)) 2631 pr_cont("\n"); 2632 else if (_IOC_DIR(cmd) == _IOC_NONE) 2633 info->debug(arg, write_only); 2634 else { 2635 pr_cont(": "); 2636 info->debug(arg, write_only); 2637 } 2638 } 2639 2640 return ret; 2641} 2642 2643static int check_array_args(unsigned int cmd, void *parg, size_t *array_size, 2644 void __user **user_ptr, void ***kernel_ptr) 2645{ 2646 int ret = 0; 2647 2648 switch (cmd) { 2649 case VIDIOC_PREPARE_BUF: 2650 case VIDIOC_QUERYBUF: 2651 case VIDIOC_QBUF: 2652 case VIDIOC_DQBUF: { 2653 struct v4l2_buffer *buf = parg; 2654 2655 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) { 2656 if (buf->length > VIDEO_MAX_PLANES) { 2657 ret = -EINVAL; 2658 break; 2659 } 2660 *user_ptr = (void __user *)buf->m.planes; 2661 *kernel_ptr = (void **)&buf->m.planes; 2662 *array_size = sizeof(struct v4l2_plane) * buf->length; 2663 ret = 1; 2664 } 2665 break; 2666 } 2667 2668 case VIDIOC_G_EDID: 2669 case VIDIOC_S_EDID: { 2670 struct v4l2_edid *edid = parg; 2671 2672 if (edid->blocks) { 2673 if (edid->blocks > 256) { 2674 ret = -EINVAL; 2675 break; 2676 } 2677 *user_ptr = (void __user *)edid->edid; 2678 *kernel_ptr = (void **)&edid->edid; 2679 *array_size = edid->blocks * 128; 2680 ret = 1; 2681 } 2682 break; 2683 } 2684 2685 case VIDIOC_S_EXT_CTRLS: 2686 case VIDIOC_G_EXT_CTRLS: 2687 case VIDIOC_TRY_EXT_CTRLS: { 2688 struct v4l2_ext_controls *ctrls = parg; 2689 2690 if (ctrls->count != 0) { 2691 if (ctrls->count > V4L2_CID_MAX_CTRLS) { 2692 ret = -EINVAL; 2693 break; 2694 } 2695 *user_ptr = (void __user *)ctrls->controls; 2696 *kernel_ptr = (void **)&ctrls->controls; 2697 *array_size = sizeof(struct v4l2_ext_control) 2698 * ctrls->count; 2699 ret = 1; 2700 } 2701 break; 2702 } 2703 } 2704 2705 return ret; 2706} 2707 2708long 2709video_usercopy(struct file *file, unsigned int cmd, unsigned long arg, 2710 v4l2_kioctl func) 2711{ 2712 char sbuf[128]; 2713 void *mbuf = NULL; 2714 void *parg = (void *)arg; 2715 long err = -EINVAL; 2716 bool has_array_args; 2717 size_t array_size = 0; 2718 void __user *user_ptr = NULL; 2719 void **kernel_ptr = NULL; 2720 2721 /* Copy arguments into temp kernel buffer */ 2722 if (_IOC_DIR(cmd) != _IOC_NONE) { 2723 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) { 2724 parg = sbuf; 2725 } else { 2726 /* too big to allocate from stack */ 2727 mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL); 2728 if (NULL == mbuf) 2729 return -ENOMEM; 2730 parg = mbuf; 2731 } 2732 2733 err = -EFAULT; 2734 if (_IOC_DIR(cmd) & _IOC_WRITE) { 2735 unsigned int n = _IOC_SIZE(cmd); 2736 2737 /* 2738 * In some cases, only a few fields are used as input, 2739 * i.e. when the app sets "index" and then the driver 2740 * fills in the rest of the structure for the thing 2741 * with that index. We only need to copy up the first 2742 * non-input field. 2743 */ 2744 if (v4l2_is_known_ioctl(cmd)) { 2745 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags; 2746 if (flags & INFO_FL_CLEAR_MASK) 2747 n = (flags & INFO_FL_CLEAR_MASK) >> 16; 2748 } 2749 2750 if (copy_from_user(parg, (void __user *)arg, n)) 2751 goto out; 2752 2753 /* zero out anything we don't copy from userspace */ 2754 if (n < _IOC_SIZE(cmd)) 2755 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n); 2756 } else { 2757 /* read-only ioctl */ 2758 memset(parg, 0, _IOC_SIZE(cmd)); 2759 } 2760 } 2761 2762 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr); 2763 if (err < 0) 2764 goto out; 2765 has_array_args = err; 2766 2767 if (has_array_args) { 2768 /* 2769 * When adding new types of array args, make sure that the 2770 * parent argument to ioctl (which contains the pointer to the 2771 * array) fits into sbuf (so that mbuf will still remain 2772 * unused up to here). 2773 */ 2774 mbuf = kmalloc(array_size, GFP_KERNEL); 2775 err = -ENOMEM; 2776 if (NULL == mbuf) 2777 goto out_array_args; 2778 err = -EFAULT; 2779 if (copy_from_user(mbuf, user_ptr, array_size)) 2780 goto out_array_args; 2781 *kernel_ptr = mbuf; 2782 } 2783 2784 /* Handles IOCTL */ 2785 err = func(file, cmd, parg); 2786 if (err == -ENOIOCTLCMD) 2787 err = -ENOTTY; 2788 if (err == 0) { 2789 if (cmd == VIDIOC_DQBUF) 2790 trace_v4l2_dqbuf(video_devdata(file)->minor, parg); 2791 else if (cmd == VIDIOC_QBUF) 2792 trace_v4l2_qbuf(video_devdata(file)->minor, parg); 2793 } 2794 2795 if (has_array_args) { 2796 *kernel_ptr = (void __force *)user_ptr; 2797 if (copy_to_user(user_ptr, mbuf, array_size)) 2798 err = -EFAULT; 2799 goto out_array_args; 2800 } 2801 /* VIDIOC_QUERY_DV_TIMINGS can return an error, but still have valid 2802 results that must be returned. */ 2803 if (err < 0 && cmd != VIDIOC_QUERY_DV_TIMINGS) 2804 goto out; 2805 2806out_array_args: 2807 /* Copy results into user buffer */ 2808 switch (_IOC_DIR(cmd)) { 2809 case _IOC_READ: 2810 case (_IOC_WRITE | _IOC_READ): 2811 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd))) 2812 err = -EFAULT; 2813 break; 2814 } 2815 2816out: 2817 kfree(mbuf); 2818 return err; 2819} 2820EXPORT_SYMBOL(video_usercopy); 2821 2822long video_ioctl2(struct file *file, 2823 unsigned int cmd, unsigned long arg) 2824{ 2825 return video_usercopy(file, cmd, arg, __video_do_ioctl); 2826} 2827EXPORT_SYMBOL(video_ioctl2); 2828