1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Video capture interface for Linux version 2 4 * 5 * A generic framework to process V4L2 ioctl commands. 6 * 7 * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1) 8 * Mauro Carvalho Chehab <mchehab@kernel.org> (version 2) 9 */ 10 11 #include <linux/mm.h> 12 #include <linux/module.h> 13 #include <linux/slab.h> 14 #include <linux/types.h> 15 #include <linux/kernel.h> 16 #include <linux/version.h> 17 18 #include <linux/videodev2.h> 19 20 #include <media/v4l2-common.h> 21 #include <media/v4l2-ioctl.h> 22 #include <media/v4l2-ctrls.h> 23 #include <media/v4l2-fh.h> 24 #include <media/v4l2-event.h> 25 #include <media/v4l2-device.h> 26 #include <media/videobuf2-v4l2.h> 27 #include <media/v4l2-mc.h> 28 #include <media/v4l2-mem2mem.h> 29 30 #include <trace/events/v4l2.h> 31 32 /* Zero out the end of the struct pointed to by p. Everything after, but 33 * not including, the specified field is cleared. */ 34 #define CLEAR_AFTER_FIELD(p, field) \ 35 memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \ 36 0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field)) 37 38 #define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls) 39 40 struct std_descr { 41 v4l2_std_id std; 42 const char *descr; 43 }; 44 45 static const struct std_descr standards[] = { 46 { V4L2_STD_NTSC, "NTSC" }, 47 { V4L2_STD_NTSC_M, "NTSC-M" }, 48 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" }, 49 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" }, 50 { V4L2_STD_NTSC_443, "NTSC-443" }, 51 { V4L2_STD_PAL, "PAL" }, 52 { V4L2_STD_PAL_BG, "PAL-BG" }, 53 { V4L2_STD_PAL_B, "PAL-B" }, 54 { V4L2_STD_PAL_B1, "PAL-B1" }, 55 { V4L2_STD_PAL_G, "PAL-G" }, 56 { V4L2_STD_PAL_H, "PAL-H" }, 57 { V4L2_STD_PAL_I, "PAL-I" }, 58 { V4L2_STD_PAL_DK, "PAL-DK" }, 59 { V4L2_STD_PAL_D, "PAL-D" }, 60 { V4L2_STD_PAL_D1, "PAL-D1" }, 61 { V4L2_STD_PAL_K, "PAL-K" }, 62 { V4L2_STD_PAL_M, "PAL-M" }, 63 { V4L2_STD_PAL_N, "PAL-N" }, 64 { V4L2_STD_PAL_Nc, "PAL-Nc" }, 65 { V4L2_STD_PAL_60, "PAL-60" }, 66 { V4L2_STD_SECAM, "SECAM" }, 67 { V4L2_STD_SECAM_B, "SECAM-B" }, 68 { V4L2_STD_SECAM_G, "SECAM-G" }, 69 { V4L2_STD_SECAM_H, "SECAM-H" }, 70 { V4L2_STD_SECAM_DK, "SECAM-DK" }, 71 { V4L2_STD_SECAM_D, "SECAM-D" }, 72 { V4L2_STD_SECAM_K, "SECAM-K" }, 73 { V4L2_STD_SECAM_K1, "SECAM-K1" }, 74 { V4L2_STD_SECAM_L, "SECAM-L" }, 75 { V4L2_STD_SECAM_LC, "SECAM-Lc" }, 76 { 0, "Unknown" } 77 }; 78 79 /* video4linux standard ID conversion to standard name 80 */ 81 const char *v4l2_norm_to_name(v4l2_std_id id) 82 { 83 u32 myid = id; 84 int i; 85 86 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle 87 64 bit comparisons. So, on that architecture, with some gcc 88 variants, compilation fails. Currently, the max value is 30bit wide. 89 */ 90 BUG_ON(myid != id); 91 92 for (i = 0; standards[i].std; i++) 93 if (myid == standards[i].std) 94 break; 95 return standards[i].descr; 96 } 97 EXPORT_SYMBOL(v4l2_norm_to_name); 98 99 /* Returns frame period for the given standard */ 100 void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod) 101 { 102 if (id & V4L2_STD_525_60) { 103 frameperiod->numerator = 1001; 104 frameperiod->denominator = 30000; 105 } else { 106 frameperiod->numerator = 1; 107 frameperiod->denominator = 25; 108 } 109 } 110 EXPORT_SYMBOL(v4l2_video_std_frame_period); 111 112 /* Fill in the fields of a v4l2_standard structure according to the 113 'id' and 'transmission' parameters. Returns negative on error. */ 114 int v4l2_video_std_construct(struct v4l2_standard *vs, 115 int id, const char *name) 116 { 117 vs->id = id; 118 v4l2_video_std_frame_period(id, &vs->frameperiod); 119 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625; 120 strscpy(vs->name, name, sizeof(vs->name)); 121 return 0; 122 } 123 EXPORT_SYMBOL(v4l2_video_std_construct); 124 125 /* Fill in the fields of a v4l2_standard structure according to the 126 * 'id' and 'vs->index' parameters. Returns negative on error. */ 127 int v4l_video_std_enumstd(struct v4l2_standard *vs, v4l2_std_id id) 128 { 129 v4l2_std_id curr_id = 0; 130 unsigned int index = vs->index, i, j = 0; 131 const char *descr = ""; 132 133 /* Return -ENODATA if the id for the current input 134 or output is 0, meaning that it doesn't support this API. */ 135 if (id == 0) 136 return -ENODATA; 137 138 /* Return norm array in a canonical way */ 139 for (i = 0; i <= index && id; i++) { 140 /* last std value in the standards array is 0, so this 141 while always ends there since (id & 0) == 0. */ 142 while ((id & standards[j].std) != standards[j].std) 143 j++; 144 curr_id = standards[j].std; 145 descr = standards[j].descr; 146 j++; 147 if (curr_id == 0) 148 break; 149 if (curr_id != V4L2_STD_PAL && 150 curr_id != V4L2_STD_SECAM && 151 curr_id != V4L2_STD_NTSC) 152 id &= ~curr_id; 153 } 154 if (i <= index) 155 return -EINVAL; 156 157 v4l2_video_std_construct(vs, curr_id, descr); 158 return 0; 159 } 160 161 /* ----------------------------------------------------------------- */ 162 /* some arrays for pretty-printing debug messages of enum types */ 163 164 const char *v4l2_field_names[] = { 165 [V4L2_FIELD_ANY] = "any", 166 [V4L2_FIELD_NONE] = "none", 167 [V4L2_FIELD_TOP] = "top", 168 [V4L2_FIELD_BOTTOM] = "bottom", 169 [V4L2_FIELD_INTERLACED] = "interlaced", 170 [V4L2_FIELD_SEQ_TB] = "seq-tb", 171 [V4L2_FIELD_SEQ_BT] = "seq-bt", 172 [V4L2_FIELD_ALTERNATE] = "alternate", 173 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb", 174 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt", 175 }; 176 EXPORT_SYMBOL(v4l2_field_names); 177 178 const char *v4l2_type_names[] = { 179 [0] = "0", 180 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap", 181 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay", 182 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out", 183 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap", 184 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out", 185 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap", 186 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out", 187 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay", 188 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane", 189 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane", 190 [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap", 191 [V4L2_BUF_TYPE_SDR_OUTPUT] = "sdr-out", 192 [V4L2_BUF_TYPE_META_CAPTURE] = "meta-cap", 193 [V4L2_BUF_TYPE_META_OUTPUT] = "meta-out", 194 }; 195 EXPORT_SYMBOL(v4l2_type_names); 196 197 static const char *v4l2_memory_names[] = { 198 [V4L2_MEMORY_MMAP] = "mmap", 199 [V4L2_MEMORY_USERPTR] = "userptr", 200 [V4L2_MEMORY_OVERLAY] = "overlay", 201 [V4L2_MEMORY_DMABUF] = "dmabuf", 202 }; 203 204 #define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown") 205 206 /* ------------------------------------------------------------------ */ 207 /* debug help functions */ 208 209 static void v4l_print_querycap(const void *arg, bool write_only) 210 { 211 const struct v4l2_capability *p = arg; 212 213 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, capabilities=0x%08x, device_caps=0x%08x\n", 214 (int)sizeof(p->driver), p->driver, 215 (int)sizeof(p->card), p->card, 216 (int)sizeof(p->bus_info), p->bus_info, 217 p->version, p->capabilities, p->device_caps); 218 } 219 220 static void v4l_print_enuminput(const void *arg, bool write_only) 221 { 222 const struct v4l2_input *p = arg; 223 224 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, std=0x%08Lx, status=0x%x, capabilities=0x%x\n", 225 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, 226 p->tuner, (unsigned long long)p->std, p->status, 227 p->capabilities); 228 } 229 230 static void v4l_print_enumoutput(const void *arg, bool write_only) 231 { 232 const struct v4l2_output *p = arg; 233 234 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, modulator=%u, std=0x%08Lx, capabilities=0x%x\n", 235 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, 236 p->modulator, (unsigned long long)p->std, p->capabilities); 237 } 238 239 static void v4l_print_audio(const void *arg, bool write_only) 240 { 241 const struct v4l2_audio *p = arg; 242 243 if (write_only) 244 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode); 245 else 246 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", 247 p->index, (int)sizeof(p->name), p->name, 248 p->capability, p->mode); 249 } 250 251 static void v4l_print_audioout(const void *arg, bool write_only) 252 { 253 const struct v4l2_audioout *p = arg; 254 255 if (write_only) 256 pr_cont("index=%u\n", p->index); 257 else 258 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", 259 p->index, (int)sizeof(p->name), p->name, 260 p->capability, p->mode); 261 } 262 263 static void v4l_print_fmtdesc(const void *arg, bool write_only) 264 { 265 const struct v4l2_fmtdesc *p = arg; 266 267 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%c%c%c%c, mbus_code=0x%04x, description='%.*s'\n", 268 p->index, prt_names(p->type, v4l2_type_names), 269 p->flags, (p->pixelformat & 0xff), 270 (p->pixelformat >> 8) & 0xff, 271 (p->pixelformat >> 16) & 0xff, 272 (p->pixelformat >> 24) & 0xff, 273 p->mbus_code, 274 (int)sizeof(p->description), p->description); 275 } 276 277 static void v4l_print_format(const void *arg, bool write_only) 278 { 279 const struct v4l2_format *p = arg; 280 const struct v4l2_pix_format *pix; 281 const struct v4l2_pix_format_mplane *mp; 282 const struct v4l2_vbi_format *vbi; 283 const struct v4l2_sliced_vbi_format *sliced; 284 const struct v4l2_window *win; 285 const struct v4l2_sdr_format *sdr; 286 const struct v4l2_meta_format *meta; 287 u32 planes; 288 unsigned i; 289 290 pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); 291 switch (p->type) { 292 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 293 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 294 pix = &p->fmt.pix; 295 pr_cont(", width=%u, height=%u, pixelformat=%c%c%c%c, field=%s, bytesperline=%u, sizeimage=%u, colorspace=%d, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n", 296 pix->width, pix->height, 297 (pix->pixelformat & 0xff), 298 (pix->pixelformat >> 8) & 0xff, 299 (pix->pixelformat >> 16) & 0xff, 300 (pix->pixelformat >> 24) & 0xff, 301 prt_names(pix->field, v4l2_field_names), 302 pix->bytesperline, pix->sizeimage, 303 pix->colorspace, pix->flags, pix->ycbcr_enc, 304 pix->quantization, pix->xfer_func); 305 break; 306 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 307 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 308 mp = &p->fmt.pix_mp; 309 pr_cont(", width=%u, height=%u, format=%c%c%c%c, field=%s, colorspace=%d, num_planes=%u, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n", 310 mp->width, mp->height, 311 (mp->pixelformat & 0xff), 312 (mp->pixelformat >> 8) & 0xff, 313 (mp->pixelformat >> 16) & 0xff, 314 (mp->pixelformat >> 24) & 0xff, 315 prt_names(mp->field, v4l2_field_names), 316 mp->colorspace, mp->num_planes, mp->flags, 317 mp->ycbcr_enc, mp->quantization, mp->xfer_func); 318 planes = min_t(u32, mp->num_planes, VIDEO_MAX_PLANES); 319 for (i = 0; i < planes; i++) 320 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i, 321 mp->plane_fmt[i].bytesperline, 322 mp->plane_fmt[i].sizeimage); 323 break; 324 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 325 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 326 win = &p->fmt.win; 327 /* Note: we can't print the clip list here since the clips 328 * pointer is a userspace pointer, not a kernelspace 329 * pointer. */ 330 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", 331 win->w.width, win->w.height, win->w.left, win->w.top, 332 prt_names(win->field, v4l2_field_names), 333 win->chromakey, win->clipcount, win->clips, 334 win->bitmap, win->global_alpha); 335 break; 336 case V4L2_BUF_TYPE_VBI_CAPTURE: 337 case V4L2_BUF_TYPE_VBI_OUTPUT: 338 vbi = &p->fmt.vbi; 339 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n", 340 vbi->sampling_rate, vbi->offset, 341 vbi->samples_per_line, 342 (vbi->sample_format & 0xff), 343 (vbi->sample_format >> 8) & 0xff, 344 (vbi->sample_format >> 16) & 0xff, 345 (vbi->sample_format >> 24) & 0xff, 346 vbi->start[0], vbi->start[1], 347 vbi->count[0], vbi->count[1]); 348 break; 349 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 350 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 351 sliced = &p->fmt.sliced; 352 pr_cont(", service_set=0x%08x, io_size=%d\n", 353 sliced->service_set, sliced->io_size); 354 for (i = 0; i < 24; i++) 355 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, 356 sliced->service_lines[0][i], 357 sliced->service_lines[1][i]); 358 break; 359 case V4L2_BUF_TYPE_SDR_CAPTURE: 360 case V4L2_BUF_TYPE_SDR_OUTPUT: 361 sdr = &p->fmt.sdr; 362 pr_cont(", pixelformat=%c%c%c%c\n", 363 (sdr->pixelformat >> 0) & 0xff, 364 (sdr->pixelformat >> 8) & 0xff, 365 (sdr->pixelformat >> 16) & 0xff, 366 (sdr->pixelformat >> 24) & 0xff); 367 break; 368 case V4L2_BUF_TYPE_META_CAPTURE: 369 case V4L2_BUF_TYPE_META_OUTPUT: 370 meta = &p->fmt.meta; 371 pr_cont(", dataformat=%c%c%c%c, buffersize=%u\n", 372 (meta->dataformat >> 0) & 0xff, 373 (meta->dataformat >> 8) & 0xff, 374 (meta->dataformat >> 16) & 0xff, 375 (meta->dataformat >> 24) & 0xff, 376 meta->buffersize); 377 break; 378 } 379 } 380 381 static void v4l_print_framebuffer(const void *arg, bool write_only) 382 { 383 const struct v4l2_framebuffer *p = arg; 384 385 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, height=%u, pixelformat=%c%c%c%c, bytesperline=%u, sizeimage=%u, colorspace=%d\n", 386 p->capability, p->flags, p->base, 387 p->fmt.width, p->fmt.height, 388 (p->fmt.pixelformat & 0xff), 389 (p->fmt.pixelformat >> 8) & 0xff, 390 (p->fmt.pixelformat >> 16) & 0xff, 391 (p->fmt.pixelformat >> 24) & 0xff, 392 p->fmt.bytesperline, p->fmt.sizeimage, 393 p->fmt.colorspace); 394 } 395 396 static void v4l_print_buftype(const void *arg, bool write_only) 397 { 398 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names)); 399 } 400 401 static void v4l_print_modulator(const void *arg, bool write_only) 402 { 403 const struct v4l2_modulator *p = arg; 404 405 if (write_only) 406 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans); 407 else 408 pr_cont("index=%u, name=%.*s, capability=0x%x, rangelow=%u, rangehigh=%u, txsubchans=0x%x\n", 409 p->index, (int)sizeof(p->name), p->name, p->capability, 410 p->rangelow, p->rangehigh, p->txsubchans); 411 } 412 413 static void v4l_print_tuner(const void *arg, bool write_only) 414 { 415 const struct v4l2_tuner *p = arg; 416 417 if (write_only) 418 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode); 419 else 420 pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, rangelow=%u, rangehigh=%u, signal=%u, afc=%d, rxsubchans=0x%x, audmode=%u\n", 421 p->index, (int)sizeof(p->name), p->name, p->type, 422 p->capability, p->rangelow, 423 p->rangehigh, p->signal, p->afc, 424 p->rxsubchans, p->audmode); 425 } 426 427 static void v4l_print_frequency(const void *arg, bool write_only) 428 { 429 const struct v4l2_frequency *p = arg; 430 431 pr_cont("tuner=%u, type=%u, frequency=%u\n", 432 p->tuner, p->type, p->frequency); 433 } 434 435 static void v4l_print_standard(const void *arg, bool write_only) 436 { 437 const struct v4l2_standard *p = arg; 438 439 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, framelines=%u\n", 440 p->index, 441 (unsigned long long)p->id, (int)sizeof(p->name), p->name, 442 p->frameperiod.numerator, 443 p->frameperiod.denominator, 444 p->framelines); 445 } 446 447 static void v4l_print_std(const void *arg, bool write_only) 448 { 449 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg); 450 } 451 452 static void v4l_print_hw_freq_seek(const void *arg, bool write_only) 453 { 454 const struct v4l2_hw_freq_seek *p = arg; 455 456 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, rangelow=%u, rangehigh=%u\n", 457 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing, 458 p->rangelow, p->rangehigh); 459 } 460 461 static void v4l_print_requestbuffers(const void *arg, bool write_only) 462 { 463 const struct v4l2_requestbuffers *p = arg; 464 465 pr_cont("count=%d, type=%s, memory=%s\n", 466 p->count, 467 prt_names(p->type, v4l2_type_names), 468 prt_names(p->memory, v4l2_memory_names)); 469 } 470 471 static void v4l_print_buffer(const void *arg, bool write_only) 472 { 473 const struct v4l2_buffer *p = arg; 474 const struct v4l2_timecode *tc = &p->timecode; 475 const struct v4l2_plane *plane; 476 int i; 477 478 pr_cont("%02d:%02d:%02d.%09ld index=%d, type=%s, request_fd=%d, flags=0x%08x, field=%s, sequence=%d, memory=%s", 479 (int)p->timestamp.tv_sec / 3600, 480 ((int)p->timestamp.tv_sec / 60) % 60, 481 ((int)p->timestamp.tv_sec % 60), 482 (long)p->timestamp.tv_usec, 483 p->index, 484 prt_names(p->type, v4l2_type_names), p->request_fd, 485 p->flags, prt_names(p->field, v4l2_field_names), 486 p->sequence, prt_names(p->memory, v4l2_memory_names)); 487 488 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) { 489 pr_cont("\n"); 490 for (i = 0; i < p->length; ++i) { 491 plane = &p->m.planes[i]; 492 printk(KERN_DEBUG 493 "plane %d: bytesused=%d, data_offset=0x%08x, offset/userptr=0x%lx, length=%d\n", 494 i, plane->bytesused, plane->data_offset, 495 plane->m.userptr, plane->length); 496 } 497 } else { 498 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n", 499 p->bytesused, p->m.userptr, p->length); 500 } 501 502 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, flags=0x%08x, frames=%d, userbits=0x%08x\n", 503 tc->hours, tc->minutes, tc->seconds, 504 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits); 505 } 506 507 static void v4l_print_exportbuffer(const void *arg, bool write_only) 508 { 509 const struct v4l2_exportbuffer *p = arg; 510 511 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n", 512 p->fd, prt_names(p->type, v4l2_type_names), 513 p->index, p->plane, p->flags); 514 } 515 516 static void v4l_print_create_buffers(const void *arg, bool write_only) 517 { 518 const struct v4l2_create_buffers *p = arg; 519 520 pr_cont("index=%d, count=%d, memory=%s, ", 521 p->index, p->count, 522 prt_names(p->memory, v4l2_memory_names)); 523 v4l_print_format(&p->format, write_only); 524 } 525 526 static void v4l_print_streamparm(const void *arg, bool write_only) 527 { 528 const struct v4l2_streamparm *p = arg; 529 530 pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); 531 532 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 533 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) { 534 const struct v4l2_captureparm *c = &p->parm.capture; 535 536 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, extendedmode=%d, readbuffers=%d\n", 537 c->capability, c->capturemode, 538 c->timeperframe.numerator, c->timeperframe.denominator, 539 c->extendedmode, c->readbuffers); 540 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT || 541 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { 542 const struct v4l2_outputparm *c = &p->parm.output; 543 544 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, extendedmode=%d, writebuffers=%d\n", 545 c->capability, c->outputmode, 546 c->timeperframe.numerator, c->timeperframe.denominator, 547 c->extendedmode, c->writebuffers); 548 } else { 549 pr_cont("\n"); 550 } 551 } 552 553 static void v4l_print_queryctrl(const void *arg, bool write_only) 554 { 555 const struct v4l2_queryctrl *p = arg; 556 557 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, step=%d, default=%d, flags=0x%08x\n", 558 p->id, p->type, (int)sizeof(p->name), p->name, 559 p->minimum, p->maximum, 560 p->step, p->default_value, p->flags); 561 } 562 563 static void v4l_print_query_ext_ctrl(const void *arg, bool write_only) 564 { 565 const struct v4l2_query_ext_ctrl *p = arg; 566 567 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%lld/%lld, step=%lld, default=%lld, flags=0x%08x, elem_size=%u, elems=%u, nr_of_dims=%u, dims=%u,%u,%u,%u\n", 568 p->id, p->type, (int)sizeof(p->name), p->name, 569 p->minimum, p->maximum, 570 p->step, p->default_value, p->flags, 571 p->elem_size, p->elems, p->nr_of_dims, 572 p->dims[0], p->dims[1], p->dims[2], p->dims[3]); 573 } 574 575 static void v4l_print_querymenu(const void *arg, bool write_only) 576 { 577 const struct v4l2_querymenu *p = arg; 578 579 pr_cont("id=0x%x, index=%d\n", p->id, p->index); 580 } 581 582 static void v4l_print_control(const void *arg, bool write_only) 583 { 584 const struct v4l2_control *p = arg; 585 586 pr_cont("id=0x%x, value=%d\n", p->id, p->value); 587 } 588 589 static void v4l_print_ext_controls(const void *arg, bool write_only) 590 { 591 const struct v4l2_ext_controls *p = arg; 592 int i; 593 594 pr_cont("which=0x%x, count=%d, error_idx=%d, request_fd=%d", 595 p->which, p->count, p->error_idx, p->request_fd); 596 for (i = 0; i < p->count; i++) { 597 if (!p->controls[i].size) 598 pr_cont(", id/val=0x%x/0x%x", 599 p->controls[i].id, p->controls[i].value); 600 else 601 pr_cont(", id/size=0x%x/%u", 602 p->controls[i].id, p->controls[i].size); 603 } 604 pr_cont("\n"); 605 } 606 607 static void v4l_print_cropcap(const void *arg, bool write_only) 608 { 609 const struct v4l2_cropcap *p = arg; 610 611 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, defrect wxh=%dx%d, x,y=%d,%d, pixelaspect %d/%d\n", 612 prt_names(p->type, v4l2_type_names), 613 p->bounds.width, p->bounds.height, 614 p->bounds.left, p->bounds.top, 615 p->defrect.width, p->defrect.height, 616 p->defrect.left, p->defrect.top, 617 p->pixelaspect.numerator, p->pixelaspect.denominator); 618 } 619 620 static void v4l_print_crop(const void *arg, bool write_only) 621 { 622 const struct v4l2_crop *p = arg; 623 624 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n", 625 prt_names(p->type, v4l2_type_names), 626 p->c.width, p->c.height, 627 p->c.left, p->c.top); 628 } 629 630 static void v4l_print_selection(const void *arg, bool write_only) 631 { 632 const struct v4l2_selection *p = arg; 633 634 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n", 635 prt_names(p->type, v4l2_type_names), 636 p->target, p->flags, 637 p->r.width, p->r.height, p->r.left, p->r.top); 638 } 639 640 static void v4l_print_jpegcompression(const void *arg, bool write_only) 641 { 642 const struct v4l2_jpegcompression *p = arg; 643 644 pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n", 645 p->quality, p->APPn, p->APP_len, 646 p->COM_len, p->jpeg_markers); 647 } 648 649 static void v4l_print_enc_idx(const void *arg, bool write_only) 650 { 651 const struct v4l2_enc_idx *p = arg; 652 653 pr_cont("entries=%d, entries_cap=%d\n", 654 p->entries, p->entries_cap); 655 } 656 657 static void v4l_print_encoder_cmd(const void *arg, bool write_only) 658 { 659 const struct v4l2_encoder_cmd *p = arg; 660 661 pr_cont("cmd=%d, flags=0x%x\n", 662 p->cmd, p->flags); 663 } 664 665 static void v4l_print_decoder_cmd(const void *arg, bool write_only) 666 { 667 const struct v4l2_decoder_cmd *p = arg; 668 669 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags); 670 671 if (p->cmd == V4L2_DEC_CMD_START) 672 pr_info("speed=%d, format=%u\n", 673 p->start.speed, p->start.format); 674 else if (p->cmd == V4L2_DEC_CMD_STOP) 675 pr_info("pts=%llu\n", p->stop.pts); 676 } 677 678 static void v4l_print_dbg_chip_info(const void *arg, bool write_only) 679 { 680 const struct v4l2_dbg_chip_info *p = arg; 681 682 pr_cont("type=%u, ", p->match.type); 683 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 684 pr_cont("name=%.*s, ", 685 (int)sizeof(p->match.name), p->match.name); 686 else 687 pr_cont("addr=%u, ", p->match.addr); 688 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name); 689 } 690 691 static void v4l_print_dbg_register(const void *arg, bool write_only) 692 { 693 const struct v4l2_dbg_register *p = arg; 694 695 pr_cont("type=%u, ", p->match.type); 696 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 697 pr_cont("name=%.*s, ", 698 (int)sizeof(p->match.name), p->match.name); 699 else 700 pr_cont("addr=%u, ", p->match.addr); 701 pr_cont("reg=0x%llx, val=0x%llx\n", 702 p->reg, p->val); 703 } 704 705 static void v4l_print_dv_timings(const void *arg, bool write_only) 706 { 707 const struct v4l2_dv_timings *p = arg; 708 709 switch (p->type) { 710 case V4L2_DV_BT_656_1120: 711 pr_cont("type=bt-656/1120, interlaced=%u, pixelclock=%llu, width=%u, height=%u, polarities=0x%x, hfrontporch=%u, hsync=%u, hbackporch=%u, vfrontporch=%u, vsync=%u, vbackporch=%u, il_vfrontporch=%u, il_vsync=%u, il_vbackporch=%u, standards=0x%x, flags=0x%x\n", 712 p->bt.interlaced, p->bt.pixelclock, 713 p->bt.width, p->bt.height, 714 p->bt.polarities, p->bt.hfrontporch, 715 p->bt.hsync, p->bt.hbackporch, 716 p->bt.vfrontporch, p->bt.vsync, 717 p->bt.vbackporch, p->bt.il_vfrontporch, 718 p->bt.il_vsync, p->bt.il_vbackporch, 719 p->bt.standards, p->bt.flags); 720 break; 721 default: 722 pr_cont("type=%d\n", p->type); 723 break; 724 } 725 } 726 727 static void v4l_print_enum_dv_timings(const void *arg, bool write_only) 728 { 729 const struct v4l2_enum_dv_timings *p = arg; 730 731 pr_cont("index=%u, ", p->index); 732 v4l_print_dv_timings(&p->timings, write_only); 733 } 734 735 static void v4l_print_dv_timings_cap(const void *arg, bool write_only) 736 { 737 const struct v4l2_dv_timings_cap *p = arg; 738 739 switch (p->type) { 740 case V4L2_DV_BT_656_1120: 741 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n", 742 p->bt.min_width, p->bt.max_width, 743 p->bt.min_height, p->bt.max_height, 744 p->bt.min_pixelclock, p->bt.max_pixelclock, 745 p->bt.standards, p->bt.capabilities); 746 break; 747 default: 748 pr_cont("type=%u\n", p->type); 749 break; 750 } 751 } 752 753 static void v4l_print_frmsizeenum(const void *arg, bool write_only) 754 { 755 const struct v4l2_frmsizeenum *p = arg; 756 757 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u", 758 p->index, 759 (p->pixel_format & 0xff), 760 (p->pixel_format >> 8) & 0xff, 761 (p->pixel_format >> 16) & 0xff, 762 (p->pixel_format >> 24) & 0xff, 763 p->type); 764 switch (p->type) { 765 case V4L2_FRMSIZE_TYPE_DISCRETE: 766 pr_cont(", wxh=%ux%u\n", 767 p->discrete.width, p->discrete.height); 768 break; 769 case V4L2_FRMSIZE_TYPE_STEPWISE: 770 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n", 771 p->stepwise.min_width, 772 p->stepwise.min_height, 773 p->stepwise.max_width, 774 p->stepwise.max_height, 775 p->stepwise.step_width, 776 p->stepwise.step_height); 777 break; 778 case V4L2_FRMSIZE_TYPE_CONTINUOUS: 779 /* fall through */ 780 default: 781 pr_cont("\n"); 782 break; 783 } 784 } 785 786 static void v4l_print_frmivalenum(const void *arg, bool write_only) 787 { 788 const struct v4l2_frmivalenum *p = arg; 789 790 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u", 791 p->index, 792 (p->pixel_format & 0xff), 793 (p->pixel_format >> 8) & 0xff, 794 (p->pixel_format >> 16) & 0xff, 795 (p->pixel_format >> 24) & 0xff, 796 p->width, p->height, p->type); 797 switch (p->type) { 798 case V4L2_FRMIVAL_TYPE_DISCRETE: 799 pr_cont(", fps=%d/%d\n", 800 p->discrete.numerator, 801 p->discrete.denominator); 802 break; 803 case V4L2_FRMIVAL_TYPE_STEPWISE: 804 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n", 805 p->stepwise.min.numerator, 806 p->stepwise.min.denominator, 807 p->stepwise.max.numerator, 808 p->stepwise.max.denominator, 809 p->stepwise.step.numerator, 810 p->stepwise.step.denominator); 811 break; 812 case V4L2_FRMIVAL_TYPE_CONTINUOUS: 813 /* fall through */ 814 default: 815 pr_cont("\n"); 816 break; 817 } 818 } 819 820 static void v4l_print_event(const void *arg, bool write_only) 821 { 822 const struct v4l2_event *p = arg; 823 const struct v4l2_event_ctrl *c; 824 825 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%llu.%9.9llu\n", 826 p->type, p->pending, p->sequence, p->id, 827 p->timestamp.tv_sec, p->timestamp.tv_nsec); 828 switch (p->type) { 829 case V4L2_EVENT_VSYNC: 830 printk(KERN_DEBUG "field=%s\n", 831 prt_names(p->u.vsync.field, v4l2_field_names)); 832 break; 833 case V4L2_EVENT_CTRL: 834 c = &p->u.ctrl; 835 printk(KERN_DEBUG "changes=0x%x, type=%u, ", 836 c->changes, c->type); 837 if (c->type == V4L2_CTRL_TYPE_INTEGER64) 838 pr_cont("value64=%lld, ", c->value64); 839 else 840 pr_cont("value=%d, ", c->value); 841 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n", 842 c->flags, c->minimum, c->maximum, 843 c->step, c->default_value); 844 break; 845 case V4L2_EVENT_FRAME_SYNC: 846 pr_cont("frame_sequence=%u\n", 847 p->u.frame_sync.frame_sequence); 848 break; 849 } 850 } 851 852 static void v4l_print_event_subscription(const void *arg, bool write_only) 853 { 854 const struct v4l2_event_subscription *p = arg; 855 856 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n", 857 p->type, p->id, p->flags); 858 } 859 860 static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only) 861 { 862 const struct v4l2_sliced_vbi_cap *p = arg; 863 int i; 864 865 pr_cont("type=%s, service_set=0x%08x\n", 866 prt_names(p->type, v4l2_type_names), p->service_set); 867 for (i = 0; i < 24; i++) 868 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, 869 p->service_lines[0][i], 870 p->service_lines[1][i]); 871 } 872 873 static void v4l_print_freq_band(const void *arg, bool write_only) 874 { 875 const struct v4l2_frequency_band *p = arg; 876 877 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n", 878 p->tuner, p->type, p->index, 879 p->capability, p->rangelow, 880 p->rangehigh, p->modulation); 881 } 882 883 static void v4l_print_edid(const void *arg, bool write_only) 884 { 885 const struct v4l2_edid *p = arg; 886 887 pr_cont("pad=%u, start_block=%u, blocks=%u\n", 888 p->pad, p->start_block, p->blocks); 889 } 890 891 static void v4l_print_u32(const void *arg, bool write_only) 892 { 893 pr_cont("value=%u\n", *(const u32 *)arg); 894 } 895 896 static void v4l_print_newline(const void *arg, bool write_only) 897 { 898 pr_cont("\n"); 899 } 900 901 static void v4l_print_default(const void *arg, bool write_only) 902 { 903 pr_cont("driver-specific ioctl\n"); 904 } 905 906 static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) 907 { 908 __u32 i; 909 910 /* zero the reserved fields */ 911 c->reserved[0] = 0; 912 for (i = 0; i < c->count; i++) 913 c->controls[i].reserved2[0] = 0; 914 915 /* V4L2_CID_PRIVATE_BASE cannot be used as control class 916 when using extended controls. 917 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL 918 is it allowed for backwards compatibility. 919 */ 920 if (!allow_priv && c->which == V4L2_CID_PRIVATE_BASE) 921 return 0; 922 if (!c->which) 923 return 1; 924 /* Check that all controls are from the same control class. */ 925 for (i = 0; i < c->count; i++) { 926 if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) { 927 c->error_idx = i; 928 return 0; 929 } 930 } 931 return 1; 932 } 933 934 static int check_fmt(struct file *file, enum v4l2_buf_type type) 935 { 936 const u32 vid_caps = V4L2_CAP_VIDEO_CAPTURE | 937 V4L2_CAP_VIDEO_CAPTURE_MPLANE | 938 V4L2_CAP_VIDEO_OUTPUT | 939 V4L2_CAP_VIDEO_OUTPUT_MPLANE | 940 V4L2_CAP_VIDEO_M2M | V4L2_CAP_VIDEO_M2M_MPLANE; 941 const u32 meta_caps = V4L2_CAP_META_CAPTURE | 942 V4L2_CAP_META_OUTPUT; 943 struct video_device *vfd = video_devdata(file); 944 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 945 bool is_vid = vfd->vfl_type == VFL_TYPE_VIDEO && 946 (vfd->device_caps & vid_caps); 947 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI; 948 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; 949 bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; 950 bool is_meta = vfd->vfl_type == VFL_TYPE_VIDEO && 951 (vfd->device_caps & meta_caps); 952 bool is_rx = vfd->vfl_dir != VFL_DIR_TX; 953 bool is_tx = vfd->vfl_dir != VFL_DIR_RX; 954 955 if (ops == NULL) 956 return -EINVAL; 957 958 switch (type) { 959 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 960 if ((is_vid || is_tch) && is_rx && 961 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane)) 962 return 0; 963 break; 964 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 965 if ((is_vid || is_tch) && is_rx && ops->vidioc_g_fmt_vid_cap_mplane) 966 return 0; 967 break; 968 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 969 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay) 970 return 0; 971 break; 972 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 973 if (is_vid && is_tx && 974 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane)) 975 return 0; 976 break; 977 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 978 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane) 979 return 0; 980 break; 981 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 982 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay) 983 return 0; 984 break; 985 case V4L2_BUF_TYPE_VBI_CAPTURE: 986 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap) 987 return 0; 988 break; 989 case V4L2_BUF_TYPE_VBI_OUTPUT: 990 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out) 991 return 0; 992 break; 993 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 994 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap) 995 return 0; 996 break; 997 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 998 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out) 999 return 0; 1000 break; 1001 case V4L2_BUF_TYPE_SDR_CAPTURE: 1002 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap) 1003 return 0; 1004 break; 1005 case V4L2_BUF_TYPE_SDR_OUTPUT: 1006 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out) 1007 return 0; 1008 break; 1009 case V4L2_BUF_TYPE_META_CAPTURE: 1010 if (is_meta && is_rx && ops->vidioc_g_fmt_meta_cap) 1011 return 0; 1012 break; 1013 case V4L2_BUF_TYPE_META_OUTPUT: 1014 if (is_meta && is_tx && ops->vidioc_g_fmt_meta_out) 1015 return 0; 1016 break; 1017 default: 1018 break; 1019 } 1020 return -EINVAL; 1021 } 1022 1023 static void v4l_sanitize_format(struct v4l2_format *fmt) 1024 { 1025 unsigned int offset; 1026 1027 /* Make sure num_planes is not bogus */ 1028 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE || 1029 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 1030 fmt->fmt.pix_mp.num_planes = min_t(u32, fmt->fmt.pix_mp.num_planes, 1031 VIDEO_MAX_PLANES); 1032 1033 /* 1034 * The v4l2_pix_format structure has been extended with fields that were 1035 * not previously required to be set to zero by applications. The priv 1036 * field, when set to a magic value, indicates the the extended fields 1037 * are valid. Otherwise they will contain undefined values. To simplify 1038 * the API towards drivers zero the extended fields and set the priv 1039 * field to the magic value when the extended pixel format structure 1040 * isn't used by applications. 1041 */ 1042 1043 if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && 1044 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) 1045 return; 1046 1047 if (fmt->fmt.pix.priv == V4L2_PIX_FMT_PRIV_MAGIC) 1048 return; 1049 1050 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1051 1052 offset = offsetof(struct v4l2_pix_format, priv) 1053 + sizeof(fmt->fmt.pix.priv); 1054 memset(((void *)&fmt->fmt.pix) + offset, 0, 1055 sizeof(fmt->fmt.pix) - offset); 1056 } 1057 1058 static int v4l_querycap(const struct v4l2_ioctl_ops *ops, 1059 struct file *file, void *fh, void *arg) 1060 { 1061 struct v4l2_capability *cap = (struct v4l2_capability *)arg; 1062 struct video_device *vfd = video_devdata(file); 1063 int ret; 1064 1065 cap->version = LINUX_VERSION_CODE; 1066 cap->device_caps = vfd->device_caps; 1067 cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS; 1068 1069 ret = ops->vidioc_querycap(file, fh, cap); 1070 1071 /* 1072 * Drivers must not change device_caps, so check for this and 1073 * warn if this happened. 1074 */ 1075 WARN_ON(cap->device_caps != vfd->device_caps); 1076 /* 1077 * Check that capabilities is a superset of 1078 * vfd->device_caps | V4L2_CAP_DEVICE_CAPS 1079 */ 1080 WARN_ON((cap->capabilities & 1081 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)) != 1082 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)); 1083 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT; 1084 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT; 1085 1086 return ret; 1087 } 1088 1089 static int v4l_g_input(const struct v4l2_ioctl_ops *ops, 1090 struct file *file, void *fh, void *arg) 1091 { 1092 struct video_device *vfd = video_devdata(file); 1093 1094 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1095 *(int *)arg = 0; 1096 return 0; 1097 } 1098 1099 return ops->vidioc_g_input(file, fh, arg); 1100 } 1101 1102 static int v4l_g_output(const struct v4l2_ioctl_ops *ops, 1103 struct file *file, void *fh, void *arg) 1104 { 1105 struct video_device *vfd = video_devdata(file); 1106 1107 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1108 *(int *)arg = 0; 1109 return 0; 1110 } 1111 1112 return ops->vidioc_g_output(file, fh, arg); 1113 } 1114 1115 static int v4l_s_input(const struct v4l2_ioctl_ops *ops, 1116 struct file *file, void *fh, void *arg) 1117 { 1118 struct video_device *vfd = video_devdata(file); 1119 int ret; 1120 1121 ret = v4l_enable_media_source(vfd); 1122 if (ret) 1123 return ret; 1124 1125 if (vfd->device_caps & V4L2_CAP_IO_MC) 1126 return *(int *)arg ? -EINVAL : 0; 1127 1128 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg); 1129 } 1130 1131 static int v4l_s_output(const struct v4l2_ioctl_ops *ops, 1132 struct file *file, void *fh, void *arg) 1133 { 1134 struct video_device *vfd = video_devdata(file); 1135 1136 if (vfd->device_caps & V4L2_CAP_IO_MC) 1137 return *(int *)arg ? -EINVAL : 0; 1138 1139 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg); 1140 } 1141 1142 static int v4l_g_priority(const struct v4l2_ioctl_ops *ops, 1143 struct file *file, void *fh, void *arg) 1144 { 1145 struct video_device *vfd; 1146 u32 *p = arg; 1147 1148 vfd = video_devdata(file); 1149 *p = v4l2_prio_max(vfd->prio); 1150 return 0; 1151 } 1152 1153 static int v4l_s_priority(const struct v4l2_ioctl_ops *ops, 1154 struct file *file, void *fh, void *arg) 1155 { 1156 struct video_device *vfd; 1157 struct v4l2_fh *vfh; 1158 u32 *p = arg; 1159 1160 vfd = video_devdata(file); 1161 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 1162 return -ENOTTY; 1163 vfh = file->private_data; 1164 return v4l2_prio_change(vfd->prio, &vfh->prio, *p); 1165 } 1166 1167 static int v4l_enuminput(const struct v4l2_ioctl_ops *ops, 1168 struct file *file, void *fh, void *arg) 1169 { 1170 struct video_device *vfd = video_devdata(file); 1171 struct v4l2_input *p = arg; 1172 1173 /* 1174 * We set the flags for CAP_DV_TIMINGS & 1175 * CAP_STD here based on ioctl handler provided by the 1176 * driver. If the driver doesn't support these 1177 * for a specific input, it must override these flags. 1178 */ 1179 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1180 p->capabilities |= V4L2_IN_CAP_STD; 1181 1182 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1183 if (p->index) 1184 return -EINVAL; 1185 strscpy(p->name, vfd->name, sizeof(p->name)); 1186 p->type = V4L2_INPUT_TYPE_CAMERA; 1187 return 0; 1188 } 1189 1190 return ops->vidioc_enum_input(file, fh, p); 1191 } 1192 1193 static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops, 1194 struct file *file, void *fh, void *arg) 1195 { 1196 struct video_device *vfd = video_devdata(file); 1197 struct v4l2_output *p = arg; 1198 1199 /* 1200 * We set the flags for CAP_DV_TIMINGS & 1201 * CAP_STD here based on ioctl handler provided by the 1202 * driver. If the driver doesn't support these 1203 * for a specific output, it must override these flags. 1204 */ 1205 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1206 p->capabilities |= V4L2_OUT_CAP_STD; 1207 1208 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1209 if (p->index) 1210 return -EINVAL; 1211 strscpy(p->name, vfd->name, sizeof(p->name)); 1212 p->type = V4L2_OUTPUT_TYPE_ANALOG; 1213 return 0; 1214 } 1215 1216 return ops->vidioc_enum_output(file, fh, p); 1217 } 1218 1219 static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) 1220 { 1221 const unsigned sz = sizeof(fmt->description); 1222 const char *descr = NULL; 1223 u32 flags = 0; 1224 1225 /* 1226 * We depart from the normal coding style here since the descriptions 1227 * should be aligned so it is easy to see which descriptions will be 1228 * longer than 31 characters (the max length for a description). 1229 * And frankly, this is easier to read anyway. 1230 * 1231 * Note that gcc will use O(log N) comparisons to find the right case. 1232 */ 1233 switch (fmt->pixelformat) { 1234 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1235 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break; 1236 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break; 1237 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break; 1238 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break; 1239 case V4L2_PIX_FMT_RGBA444: descr = "16-bit RGBA 4-4-4-4"; break; 1240 case V4L2_PIX_FMT_RGBX444: descr = "16-bit RGBX 4-4-4-4"; break; 1241 case V4L2_PIX_FMT_ABGR444: descr = "16-bit ABGR 4-4-4-4"; break; 1242 case V4L2_PIX_FMT_XBGR444: descr = "16-bit XBGR 4-4-4-4"; break; 1243 case V4L2_PIX_FMT_BGRA444: descr = "16-bit BGRA 4-4-4-4"; break; 1244 case V4L2_PIX_FMT_BGRX444: descr = "16-bit BGRX 4-4-4-4"; break; 1245 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break; 1246 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break; 1247 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break; 1248 case V4L2_PIX_FMT_ABGR555: descr = "16-bit ABGR 1-5-5-5"; break; 1249 case V4L2_PIX_FMT_XBGR555: descr = "16-bit XBGR 1-5-5-5"; break; 1250 case V4L2_PIX_FMT_RGBA555: descr = "16-bit RGBA 5-5-5-1"; break; 1251 case V4L2_PIX_FMT_RGBX555: descr = "16-bit RGBX 5-5-5-1"; break; 1252 case V4L2_PIX_FMT_BGRA555: descr = "16-bit BGRA 5-5-5-1"; break; 1253 case V4L2_PIX_FMT_BGRX555: descr = "16-bit BGRX 5-5-5-1"; break; 1254 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break; 1255 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break; 1256 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break; 1257 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break; 1258 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break; 1259 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break; 1260 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break; 1261 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break; 1262 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break; 1263 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break; 1264 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break; 1265 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break; 1266 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break; 1267 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break; 1268 case V4L2_PIX_FMT_BGRA32: descr = "32-bit ABGR 8-8-8-8"; break; 1269 case V4L2_PIX_FMT_BGRX32: descr = "32-bit XBGR 8-8-8-8"; break; 1270 case V4L2_PIX_FMT_RGBA32: descr = "32-bit RGBA 8-8-8-8"; break; 1271 case V4L2_PIX_FMT_RGBX32: descr = "32-bit RGBX 8-8-8-8"; break; 1272 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break; 1273 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break; 1274 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break; 1275 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break; 1276 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break; 1277 case V4L2_PIX_FMT_Y14: descr = "14-bit Greyscale"; break; 1278 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break; 1279 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break; 1280 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break; 1281 case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break; 1282 case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break; 1283 case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break; 1284 case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break; 1285 case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break; 1286 case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break; 1287 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break; 1288 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break; 1289 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break; 1290 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break; 1291 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break; 1292 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break; 1293 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break; 1294 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break; 1295 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break; 1296 case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break; 1297 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break; 1298 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break; 1299 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break; 1300 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break; 1301 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break; 1302 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break; 1303 case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break; 1304 case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break; 1305 case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break; 1306 case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break; 1307 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break; 1308 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break; 1309 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break; 1310 case V4L2_PIX_FMT_HM12: descr = "YUV 4:2:0 (16x16 Macroblocks)"; break; 1311 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break; 1312 case V4L2_PIX_FMT_NV12: descr = "Y/CbCr 4:2:0"; break; 1313 case V4L2_PIX_FMT_NV21: descr = "Y/CrCb 4:2:0"; break; 1314 case V4L2_PIX_FMT_NV16: descr = "Y/CbCr 4:2:2"; break; 1315 case V4L2_PIX_FMT_NV61: descr = "Y/CrCb 4:2:2"; break; 1316 case V4L2_PIX_FMT_NV24: descr = "Y/CbCr 4:4:4"; break; 1317 case V4L2_PIX_FMT_NV42: descr = "Y/CrCb 4:4:4"; break; 1318 case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break; 1319 case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break; 1320 case V4L2_PIX_FMT_NV16M: descr = "Y/CbCr 4:2:2 (N-C)"; break; 1321 case V4L2_PIX_FMT_NV61M: descr = "Y/CrCb 4:2:2 (N-C)"; break; 1322 case V4L2_PIX_FMT_NV12MT: descr = "Y/CbCr 4:2:0 (64x32 MB, N-C)"; break; 1323 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/CbCr 4:2:0 (16x16 MB, N-C)"; break; 1324 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break; 1325 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break; 1326 case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break; 1327 case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break; 1328 case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break; 1329 case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break; 1330 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break; 1331 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break; 1332 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break; 1333 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break; 1334 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break; 1335 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break; 1336 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break; 1337 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break; 1338 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break; 1339 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break; 1340 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break; 1341 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break; 1342 case V4L2_PIX_FMT_IPU3_SBGGR10: descr = "10-bit bayer BGGR IPU3 Packed"; break; 1343 case V4L2_PIX_FMT_IPU3_SGBRG10: descr = "10-bit bayer GBRG IPU3 Packed"; break; 1344 case V4L2_PIX_FMT_IPU3_SGRBG10: descr = "10-bit bayer GRBG IPU3 Packed"; break; 1345 case V4L2_PIX_FMT_IPU3_SRGGB10: descr = "10-bit bayer RGGB IPU3 Packed"; break; 1346 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break; 1347 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break; 1348 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break; 1349 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break; 1350 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break; 1351 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break; 1352 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break; 1353 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break; 1354 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break; 1355 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break; 1356 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break; 1357 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break; 1358 case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break; 1359 case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break; 1360 case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break; 1361 case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break; 1362 case V4L2_PIX_FMT_SBGGR14: descr = "14-bit Bayer BGBG/GRGR"; break; 1363 case V4L2_PIX_FMT_SGBRG14: descr = "14-bit Bayer GBGB/RGRG"; break; 1364 case V4L2_PIX_FMT_SGRBG14: descr = "14-bit Bayer GRGR/BGBG"; break; 1365 case V4L2_PIX_FMT_SRGGB14: descr = "14-bit Bayer RGRG/GBGB"; break; 1366 case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break; 1367 case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break; 1368 case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break; 1369 case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break; 1370 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break; 1371 case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break; 1372 case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break; 1373 case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break; 1374 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break; 1375 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break; 1376 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break; 1377 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break; 1378 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break; 1379 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break; 1380 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break; 1381 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break; 1382 case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break; 1383 case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break; 1384 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break; 1385 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break; 1386 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break; 1387 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break; 1388 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break; 1389 case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break; 1390 case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break; 1391 case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break; 1392 case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit Signed Deltas"; break; 1393 case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit Signed Deltas"; break; 1394 case V4L2_TCH_FMT_TU16: descr = "16-bit Unsigned Touch Data"; break; 1395 case V4L2_TCH_FMT_TU08: descr = "8-bit Unsigned Touch Data"; break; 1396 case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break; 1397 case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break; 1398 case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break; 1399 case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break; 1400 case V4L2_META_FMT_VIVID: descr = "Vivid Metadata"; break; 1401 1402 default: 1403 /* Compressed formats */ 1404 flags = V4L2_FMT_FLAG_COMPRESSED; 1405 switch (fmt->pixelformat) { 1406 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1407 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break; 1408 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break; 1409 case V4L2_PIX_FMT_DV: descr = "1394"; break; 1410 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break; 1411 case V4L2_PIX_FMT_H264: descr = "H.264"; break; 1412 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break; 1413 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break; 1414 case V4L2_PIX_FMT_H264_SLICE: descr = "H.264 Parsed Slice Data"; break; 1415 case V4L2_PIX_FMT_H263: descr = "H.263"; break; 1416 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break; 1417 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break; 1418 case V4L2_PIX_FMT_MPEG2_SLICE: descr = "MPEG-2 Parsed Slice Data"; break; 1419 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 Part 2 ES"; break; 1420 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break; 1421 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break; 1422 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break; 1423 case V4L2_PIX_FMT_VP8: descr = "VP8"; break; 1424 case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break; 1425 case V4L2_PIX_FMT_VP9: descr = "VP9"; break; 1426 case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */ 1427 case V4L2_PIX_FMT_HEVC_SLICE: descr = "HEVC Parsed Slice Data"; break; 1428 case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */ 1429 case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */ 1430 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break; 1431 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break; 1432 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break; 1433 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break; 1434 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break; 1435 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break; 1436 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break; 1437 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break; 1438 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break; 1439 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break; 1440 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break; 1441 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break; 1442 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break; 1443 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break; 1444 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break; 1445 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break; 1446 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break; 1447 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break; 1448 case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break; 1449 case V4L2_PIX_FMT_SUNXI_TILED_NV12: descr = "Sunxi Tiled NV12 Format"; break; 1450 default: 1451 if (fmt->description[0]) 1452 return; 1453 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat); 1454 flags = 0; 1455 snprintf(fmt->description, sz, "%c%c%c%c%s", 1456 (char)(fmt->pixelformat & 0x7f), 1457 (char)((fmt->pixelformat >> 8) & 0x7f), 1458 (char)((fmt->pixelformat >> 16) & 0x7f), 1459 (char)((fmt->pixelformat >> 24) & 0x7f), 1460 (fmt->pixelformat & (1UL << 31)) ? "-BE" : ""); 1461 break; 1462 } 1463 } 1464 1465 if (descr) 1466 WARN_ON(strscpy(fmt->description, descr, sz) < 0); 1467 fmt->flags |= flags; 1468 } 1469 1470 static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops, 1471 struct file *file, void *fh, void *arg) 1472 { 1473 struct video_device *vdev = video_devdata(file); 1474 struct v4l2_fmtdesc *p = arg; 1475 int ret = check_fmt(file, p->type); 1476 u32 mbus_code; 1477 u32 cap_mask; 1478 1479 if (ret) 1480 return ret; 1481 ret = -EINVAL; 1482 1483 if (!(vdev->device_caps & V4L2_CAP_IO_MC)) 1484 p->mbus_code = 0; 1485 1486 mbus_code = p->mbus_code; 1487 CLEAR_AFTER_FIELD(p, type); 1488 p->mbus_code = mbus_code; 1489 1490 switch (p->type) { 1491 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1492 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1493 cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE | 1494 V4L2_CAP_VIDEO_M2M_MPLANE; 1495 if (!!(vdev->device_caps & cap_mask) != 1496 (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) 1497 break; 1498 1499 if (unlikely(!ops->vidioc_enum_fmt_vid_cap)) 1500 break; 1501 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg); 1502 break; 1503 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1504 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay)) 1505 break; 1506 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg); 1507 break; 1508 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1509 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1510 cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE | 1511 V4L2_CAP_VIDEO_M2M_MPLANE; 1512 if (!!(vdev->device_caps & cap_mask) != 1513 (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)) 1514 break; 1515 1516 if (unlikely(!ops->vidioc_enum_fmt_vid_out)) 1517 break; 1518 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg); 1519 break; 1520 case V4L2_BUF_TYPE_SDR_CAPTURE: 1521 if (unlikely(!ops->vidioc_enum_fmt_sdr_cap)) 1522 break; 1523 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg); 1524 break; 1525 case V4L2_BUF_TYPE_SDR_OUTPUT: 1526 if (unlikely(!ops->vidioc_enum_fmt_sdr_out)) 1527 break; 1528 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg); 1529 break; 1530 case V4L2_BUF_TYPE_META_CAPTURE: 1531 if (unlikely(!ops->vidioc_enum_fmt_meta_cap)) 1532 break; 1533 ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg); 1534 break; 1535 case V4L2_BUF_TYPE_META_OUTPUT: 1536 if (unlikely(!ops->vidioc_enum_fmt_meta_out)) 1537 break; 1538 ret = ops->vidioc_enum_fmt_meta_out(file, fh, arg); 1539 break; 1540 } 1541 if (ret == 0) 1542 v4l_fill_fmtdesc(p); 1543 return ret; 1544 } 1545 1546 static void v4l_pix_format_touch(struct v4l2_pix_format *p) 1547 { 1548 /* 1549 * The v4l2_pix_format structure contains fields that make no sense for 1550 * touch. Set them to default values in this case. 1551 */ 1552 1553 p->field = V4L2_FIELD_NONE; 1554 p->colorspace = V4L2_COLORSPACE_RAW; 1555 p->flags = 0; 1556 p->ycbcr_enc = 0; 1557 p->quantization = 0; 1558 p->xfer_func = 0; 1559 } 1560 1561 static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, 1562 struct file *file, void *fh, void *arg) 1563 { 1564 struct v4l2_format *p = arg; 1565 struct video_device *vfd = video_devdata(file); 1566 int ret = check_fmt(file, p->type); 1567 1568 if (ret) 1569 return ret; 1570 1571 /* 1572 * fmt can't be cleared for these overlay types due to the 'clips' 1573 * 'clipcount' and 'bitmap' pointers in struct v4l2_window. 1574 * Those are provided by the user. So handle these two overlay types 1575 * first, and then just do a simple memset for the other types. 1576 */ 1577 switch (p->type) { 1578 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1579 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: { 1580 struct v4l2_clip __user *clips = p->fmt.win.clips; 1581 u32 clipcount = p->fmt.win.clipcount; 1582 void __user *bitmap = p->fmt.win.bitmap; 1583 1584 memset(&p->fmt, 0, sizeof(p->fmt)); 1585 p->fmt.win.clips = clips; 1586 p->fmt.win.clipcount = clipcount; 1587 p->fmt.win.bitmap = bitmap; 1588 break; 1589 } 1590 default: 1591 memset(&p->fmt, 0, sizeof(p->fmt)); 1592 break; 1593 } 1594 1595 switch (p->type) { 1596 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1597 if (unlikely(!ops->vidioc_g_fmt_vid_cap)) 1598 break; 1599 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1600 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg); 1601 /* just in case the driver zeroed it again */ 1602 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1603 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1604 v4l_pix_format_touch(&p->fmt.pix); 1605 return ret; 1606 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1607 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg); 1608 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1609 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg); 1610 case V4L2_BUF_TYPE_VBI_CAPTURE: 1611 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg); 1612 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1613 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg); 1614 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1615 if (unlikely(!ops->vidioc_g_fmt_vid_out)) 1616 break; 1617 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1618 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg); 1619 /* just in case the driver zeroed it again */ 1620 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1621 return ret; 1622 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1623 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg); 1624 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1625 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg); 1626 case V4L2_BUF_TYPE_VBI_OUTPUT: 1627 return ops->vidioc_g_fmt_vbi_out(file, fh, arg); 1628 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1629 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg); 1630 case V4L2_BUF_TYPE_SDR_CAPTURE: 1631 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg); 1632 case V4L2_BUF_TYPE_SDR_OUTPUT: 1633 return ops->vidioc_g_fmt_sdr_out(file, fh, arg); 1634 case V4L2_BUF_TYPE_META_CAPTURE: 1635 return ops->vidioc_g_fmt_meta_cap(file, fh, arg); 1636 case V4L2_BUF_TYPE_META_OUTPUT: 1637 return ops->vidioc_g_fmt_meta_out(file, fh, arg); 1638 } 1639 return -EINVAL; 1640 } 1641 1642 static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, 1643 struct file *file, void *fh, void *arg) 1644 { 1645 struct v4l2_format *p = arg; 1646 struct video_device *vfd = video_devdata(file); 1647 int ret = check_fmt(file, p->type); 1648 unsigned int i; 1649 1650 if (ret) 1651 return ret; 1652 1653 ret = v4l_enable_media_source(vfd); 1654 if (ret) 1655 return ret; 1656 v4l_sanitize_format(p); 1657 1658 switch (p->type) { 1659 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1660 if (unlikely(!ops->vidioc_s_fmt_vid_cap)) 1661 break; 1662 CLEAR_AFTER_FIELD(p, fmt.pix); 1663 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg); 1664 /* just in case the driver zeroed it again */ 1665 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1666 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1667 v4l_pix_format_touch(&p->fmt.pix); 1668 return ret; 1669 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1670 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane)) 1671 break; 1672 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1673 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1674 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1675 bytesperline); 1676 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg); 1677 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1678 if (unlikely(!ops->vidioc_s_fmt_vid_overlay)) 1679 break; 1680 CLEAR_AFTER_FIELD(p, fmt.win); 1681 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg); 1682 case V4L2_BUF_TYPE_VBI_CAPTURE: 1683 if (unlikely(!ops->vidioc_s_fmt_vbi_cap)) 1684 break; 1685 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1686 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg); 1687 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1688 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap)) 1689 break; 1690 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1691 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg); 1692 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1693 if (unlikely(!ops->vidioc_s_fmt_vid_out)) 1694 break; 1695 CLEAR_AFTER_FIELD(p, fmt.pix); 1696 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg); 1697 /* just in case the driver zeroed it again */ 1698 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1699 return ret; 1700 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1701 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane)) 1702 break; 1703 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1704 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1705 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1706 bytesperline); 1707 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg); 1708 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1709 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay)) 1710 break; 1711 CLEAR_AFTER_FIELD(p, fmt.win); 1712 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg); 1713 case V4L2_BUF_TYPE_VBI_OUTPUT: 1714 if (unlikely(!ops->vidioc_s_fmt_vbi_out)) 1715 break; 1716 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1717 return ops->vidioc_s_fmt_vbi_out(file, fh, arg); 1718 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1719 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out)) 1720 break; 1721 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1722 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg); 1723 case V4L2_BUF_TYPE_SDR_CAPTURE: 1724 if (unlikely(!ops->vidioc_s_fmt_sdr_cap)) 1725 break; 1726 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1727 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg); 1728 case V4L2_BUF_TYPE_SDR_OUTPUT: 1729 if (unlikely(!ops->vidioc_s_fmt_sdr_out)) 1730 break; 1731 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1732 return ops->vidioc_s_fmt_sdr_out(file, fh, arg); 1733 case V4L2_BUF_TYPE_META_CAPTURE: 1734 if (unlikely(!ops->vidioc_s_fmt_meta_cap)) 1735 break; 1736 CLEAR_AFTER_FIELD(p, fmt.meta); 1737 return ops->vidioc_s_fmt_meta_cap(file, fh, arg); 1738 case V4L2_BUF_TYPE_META_OUTPUT: 1739 if (unlikely(!ops->vidioc_s_fmt_meta_out)) 1740 break; 1741 CLEAR_AFTER_FIELD(p, fmt.meta); 1742 return ops->vidioc_s_fmt_meta_out(file, fh, arg); 1743 } 1744 return -EINVAL; 1745 } 1746 1747 static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, 1748 struct file *file, void *fh, void *arg) 1749 { 1750 struct v4l2_format *p = arg; 1751 struct video_device *vfd = video_devdata(file); 1752 int ret = check_fmt(file, p->type); 1753 unsigned int i; 1754 1755 if (ret) 1756 return ret; 1757 1758 v4l_sanitize_format(p); 1759 1760 switch (p->type) { 1761 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1762 if (unlikely(!ops->vidioc_try_fmt_vid_cap)) 1763 break; 1764 CLEAR_AFTER_FIELD(p, fmt.pix); 1765 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg); 1766 /* just in case the driver zeroed it again */ 1767 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1768 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1769 v4l_pix_format_touch(&p->fmt.pix); 1770 return ret; 1771 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1772 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane)) 1773 break; 1774 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1775 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1776 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1777 bytesperline); 1778 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg); 1779 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1780 if (unlikely(!ops->vidioc_try_fmt_vid_overlay)) 1781 break; 1782 CLEAR_AFTER_FIELD(p, fmt.win); 1783 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg); 1784 case V4L2_BUF_TYPE_VBI_CAPTURE: 1785 if (unlikely(!ops->vidioc_try_fmt_vbi_cap)) 1786 break; 1787 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1788 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg); 1789 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1790 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap)) 1791 break; 1792 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1793 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg); 1794 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1795 if (unlikely(!ops->vidioc_try_fmt_vid_out)) 1796 break; 1797 CLEAR_AFTER_FIELD(p, fmt.pix); 1798 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg); 1799 /* just in case the driver zeroed it again */ 1800 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1801 return ret; 1802 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1803 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane)) 1804 break; 1805 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1806 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1807 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1808 bytesperline); 1809 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg); 1810 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1811 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay)) 1812 break; 1813 CLEAR_AFTER_FIELD(p, fmt.win); 1814 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg); 1815 case V4L2_BUF_TYPE_VBI_OUTPUT: 1816 if (unlikely(!ops->vidioc_try_fmt_vbi_out)) 1817 break; 1818 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1819 return ops->vidioc_try_fmt_vbi_out(file, fh, arg); 1820 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1821 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out)) 1822 break; 1823 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1824 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg); 1825 case V4L2_BUF_TYPE_SDR_CAPTURE: 1826 if (unlikely(!ops->vidioc_try_fmt_sdr_cap)) 1827 break; 1828 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1829 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg); 1830 case V4L2_BUF_TYPE_SDR_OUTPUT: 1831 if (unlikely(!ops->vidioc_try_fmt_sdr_out)) 1832 break; 1833 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1834 return ops->vidioc_try_fmt_sdr_out(file, fh, arg); 1835 case V4L2_BUF_TYPE_META_CAPTURE: 1836 if (unlikely(!ops->vidioc_try_fmt_meta_cap)) 1837 break; 1838 CLEAR_AFTER_FIELD(p, fmt.meta); 1839 return ops->vidioc_try_fmt_meta_cap(file, fh, arg); 1840 case V4L2_BUF_TYPE_META_OUTPUT: 1841 if (unlikely(!ops->vidioc_try_fmt_meta_out)) 1842 break; 1843 CLEAR_AFTER_FIELD(p, fmt.meta); 1844 return ops->vidioc_try_fmt_meta_out(file, fh, arg); 1845 } 1846 return -EINVAL; 1847 } 1848 1849 static int v4l_streamon(const struct v4l2_ioctl_ops *ops, 1850 struct file *file, void *fh, void *arg) 1851 { 1852 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg); 1853 } 1854 1855 static int v4l_streamoff(const struct v4l2_ioctl_ops *ops, 1856 struct file *file, void *fh, void *arg) 1857 { 1858 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg); 1859 } 1860 1861 static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops, 1862 struct file *file, void *fh, void *arg) 1863 { 1864 struct video_device *vfd = video_devdata(file); 1865 struct v4l2_tuner *p = arg; 1866 int err; 1867 1868 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1869 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1870 err = ops->vidioc_g_tuner(file, fh, p); 1871 if (!err) 1872 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1873 return err; 1874 } 1875 1876 static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops, 1877 struct file *file, void *fh, void *arg) 1878 { 1879 struct video_device *vfd = video_devdata(file); 1880 struct v4l2_tuner *p = arg; 1881 int ret; 1882 1883 ret = v4l_enable_media_source(vfd); 1884 if (ret) 1885 return ret; 1886 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1887 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1888 return ops->vidioc_s_tuner(file, fh, p); 1889 } 1890 1891 static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops, 1892 struct file *file, void *fh, void *arg) 1893 { 1894 struct video_device *vfd = video_devdata(file); 1895 struct v4l2_modulator *p = arg; 1896 int err; 1897 1898 if (vfd->vfl_type == VFL_TYPE_RADIO) 1899 p->type = V4L2_TUNER_RADIO; 1900 1901 err = ops->vidioc_g_modulator(file, fh, p); 1902 if (!err) 1903 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1904 return err; 1905 } 1906 1907 static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops, 1908 struct file *file, void *fh, void *arg) 1909 { 1910 struct video_device *vfd = video_devdata(file); 1911 struct v4l2_modulator *p = arg; 1912 1913 if (vfd->vfl_type == VFL_TYPE_RADIO) 1914 p->type = V4L2_TUNER_RADIO; 1915 1916 return ops->vidioc_s_modulator(file, fh, p); 1917 } 1918 1919 static int v4l_g_frequency(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_frequency *p = arg; 1924 1925 if (vfd->vfl_type == VFL_TYPE_SDR) 1926 p->type = V4L2_TUNER_SDR; 1927 else 1928 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1929 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1930 return ops->vidioc_g_frequency(file, fh, p); 1931 } 1932 1933 static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops, 1934 struct file *file, void *fh, void *arg) 1935 { 1936 struct video_device *vfd = video_devdata(file); 1937 const struct v4l2_frequency *p = arg; 1938 enum v4l2_tuner_type type; 1939 int ret; 1940 1941 ret = v4l_enable_media_source(vfd); 1942 if (ret) 1943 return ret; 1944 if (vfd->vfl_type == VFL_TYPE_SDR) { 1945 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 1946 return -EINVAL; 1947 } else { 1948 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1949 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1950 if (type != p->type) 1951 return -EINVAL; 1952 } 1953 return ops->vidioc_s_frequency(file, fh, p); 1954 } 1955 1956 static int v4l_enumstd(const struct v4l2_ioctl_ops *ops, 1957 struct file *file, void *fh, void *arg) 1958 { 1959 struct video_device *vfd = video_devdata(file); 1960 struct v4l2_standard *p = arg; 1961 1962 return v4l_video_std_enumstd(p, vfd->tvnorms); 1963 } 1964 1965 static int v4l_s_std(const struct v4l2_ioctl_ops *ops, 1966 struct file *file, void *fh, void *arg) 1967 { 1968 struct video_device *vfd = video_devdata(file); 1969 v4l2_std_id id = *(v4l2_std_id *)arg, norm; 1970 int ret; 1971 1972 ret = v4l_enable_media_source(vfd); 1973 if (ret) 1974 return ret; 1975 norm = id & vfd->tvnorms; 1976 if (vfd->tvnorms && !norm) /* Check if std is supported */ 1977 return -EINVAL; 1978 1979 /* Calls the specific handler */ 1980 return ops->vidioc_s_std(file, fh, norm); 1981 } 1982 1983 static int v4l_querystd(const struct v4l2_ioctl_ops *ops, 1984 struct file *file, void *fh, void *arg) 1985 { 1986 struct video_device *vfd = video_devdata(file); 1987 v4l2_std_id *p = arg; 1988 int ret; 1989 1990 ret = v4l_enable_media_source(vfd); 1991 if (ret) 1992 return ret; 1993 /* 1994 * If no signal is detected, then the driver should return 1995 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with 1996 * any standards that do not apply removed. 1997 * 1998 * This means that tuners, audio and video decoders can join 1999 * their efforts to improve the standards detection. 2000 */ 2001 *p = vfd->tvnorms; 2002 return ops->vidioc_querystd(file, fh, arg); 2003 } 2004 2005 static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops, 2006 struct file *file, void *fh, void *arg) 2007 { 2008 struct video_device *vfd = video_devdata(file); 2009 struct v4l2_hw_freq_seek *p = arg; 2010 enum v4l2_tuner_type type; 2011 int ret; 2012 2013 ret = v4l_enable_media_source(vfd); 2014 if (ret) 2015 return ret; 2016 /* s_hw_freq_seek is not supported for SDR for now */ 2017 if (vfd->vfl_type == VFL_TYPE_SDR) 2018 return -EINVAL; 2019 2020 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2021 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2022 if (p->type != type) 2023 return -EINVAL; 2024 return ops->vidioc_s_hw_freq_seek(file, fh, p); 2025 } 2026 2027 static int v4l_overlay(const struct v4l2_ioctl_ops *ops, 2028 struct file *file, void *fh, void *arg) 2029 { 2030 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg); 2031 } 2032 2033 static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops, 2034 struct file *file, void *fh, void *arg) 2035 { 2036 struct v4l2_requestbuffers *p = arg; 2037 int ret = check_fmt(file, p->type); 2038 2039 if (ret) 2040 return ret; 2041 2042 CLEAR_AFTER_FIELD(p, capabilities); 2043 2044 return ops->vidioc_reqbufs(file, fh, p); 2045 } 2046 2047 static int v4l_querybuf(const struct v4l2_ioctl_ops *ops, 2048 struct file *file, void *fh, void *arg) 2049 { 2050 struct v4l2_buffer *p = arg; 2051 int ret = check_fmt(file, p->type); 2052 2053 return ret ? ret : ops->vidioc_querybuf(file, fh, p); 2054 } 2055 2056 static int v4l_qbuf(const struct v4l2_ioctl_ops *ops, 2057 struct file *file, void *fh, void *arg) 2058 { 2059 struct v4l2_buffer *p = arg; 2060 int ret = check_fmt(file, p->type); 2061 2062 return ret ? ret : ops->vidioc_qbuf(file, fh, p); 2063 } 2064 2065 static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops, 2066 struct file *file, void *fh, void *arg) 2067 { 2068 struct v4l2_buffer *p = arg; 2069 int ret = check_fmt(file, p->type); 2070 2071 return ret ? ret : ops->vidioc_dqbuf(file, fh, p); 2072 } 2073 2074 static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops, 2075 struct file *file, void *fh, void *arg) 2076 { 2077 struct v4l2_create_buffers *create = arg; 2078 int ret = check_fmt(file, create->format.type); 2079 2080 if (ret) 2081 return ret; 2082 2083 CLEAR_AFTER_FIELD(create, capabilities); 2084 2085 v4l_sanitize_format(&create->format); 2086 2087 ret = ops->vidioc_create_bufs(file, fh, create); 2088 2089 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 2090 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT) 2091 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 2092 2093 return ret; 2094 } 2095 2096 static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops, 2097 struct file *file, void *fh, void *arg) 2098 { 2099 struct v4l2_buffer *b = arg; 2100 int ret = check_fmt(file, b->type); 2101 2102 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b); 2103 } 2104 2105 static int v4l_g_parm(const struct v4l2_ioctl_ops *ops, 2106 struct file *file, void *fh, void *arg) 2107 { 2108 struct v4l2_streamparm *p = arg; 2109 v4l2_std_id std; 2110 int ret = check_fmt(file, p->type); 2111 2112 if (ret) 2113 return ret; 2114 if (ops->vidioc_g_parm) 2115 return ops->vidioc_g_parm(file, fh, p); 2116 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && 2117 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2118 return -EINVAL; 2119 p->parm.capture.readbuffers = 2; 2120 ret = ops->vidioc_g_std(file, fh, &std); 2121 if (ret == 0) 2122 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe); 2123 return ret; 2124 } 2125 2126 static int v4l_s_parm(const struct v4l2_ioctl_ops *ops, 2127 struct file *file, void *fh, void *arg) 2128 { 2129 struct v4l2_streamparm *p = arg; 2130 int ret = check_fmt(file, p->type); 2131 2132 if (ret) 2133 return ret; 2134 2135 /* Note: extendedmode is never used in drivers */ 2136 if (V4L2_TYPE_IS_OUTPUT(p->type)) { 2137 memset(p->parm.output.reserved, 0, 2138 sizeof(p->parm.output.reserved)); 2139 p->parm.output.extendedmode = 0; 2140 p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY; 2141 } else { 2142 memset(p->parm.capture.reserved, 0, 2143 sizeof(p->parm.capture.reserved)); 2144 p->parm.capture.extendedmode = 0; 2145 p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY; 2146 } 2147 return ops->vidioc_s_parm(file, fh, p); 2148 } 2149 2150 static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops, 2151 struct file *file, void *fh, void *arg) 2152 { 2153 struct video_device *vfd = video_devdata(file); 2154 struct v4l2_queryctrl *p = arg; 2155 struct v4l2_fh *vfh = 2156 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2157 2158 if (vfh && vfh->ctrl_handler) 2159 return v4l2_queryctrl(vfh->ctrl_handler, p); 2160 if (vfd->ctrl_handler) 2161 return v4l2_queryctrl(vfd->ctrl_handler, p); 2162 if (ops->vidioc_queryctrl) 2163 return ops->vidioc_queryctrl(file, fh, p); 2164 return -ENOTTY; 2165 } 2166 2167 static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops, 2168 struct file *file, void *fh, void *arg) 2169 { 2170 struct video_device *vfd = video_devdata(file); 2171 struct v4l2_query_ext_ctrl *p = arg; 2172 struct v4l2_fh *vfh = 2173 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2174 2175 if (vfh && vfh->ctrl_handler) 2176 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p); 2177 if (vfd->ctrl_handler) 2178 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p); 2179 if (ops->vidioc_query_ext_ctrl) 2180 return ops->vidioc_query_ext_ctrl(file, fh, p); 2181 return -ENOTTY; 2182 } 2183 2184 static int v4l_querymenu(const struct v4l2_ioctl_ops *ops, 2185 struct file *file, void *fh, void *arg) 2186 { 2187 struct video_device *vfd = video_devdata(file); 2188 struct v4l2_querymenu *p = arg; 2189 struct v4l2_fh *vfh = 2190 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2191 2192 if (vfh && vfh->ctrl_handler) 2193 return v4l2_querymenu(vfh->ctrl_handler, p); 2194 if (vfd->ctrl_handler) 2195 return v4l2_querymenu(vfd->ctrl_handler, p); 2196 if (ops->vidioc_querymenu) 2197 return ops->vidioc_querymenu(file, fh, p); 2198 return -ENOTTY; 2199 } 2200 2201 static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops, 2202 struct file *file, void *fh, void *arg) 2203 { 2204 struct video_device *vfd = video_devdata(file); 2205 struct v4l2_control *p = arg; 2206 struct v4l2_fh *vfh = 2207 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2208 struct v4l2_ext_controls ctrls; 2209 struct v4l2_ext_control ctrl; 2210 2211 if (vfh && vfh->ctrl_handler) 2212 return v4l2_g_ctrl(vfh->ctrl_handler, p); 2213 if (vfd->ctrl_handler) 2214 return v4l2_g_ctrl(vfd->ctrl_handler, p); 2215 if (ops->vidioc_g_ctrl) 2216 return ops->vidioc_g_ctrl(file, fh, p); 2217 if (ops->vidioc_g_ext_ctrls == NULL) 2218 return -ENOTTY; 2219 2220 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2221 ctrls.count = 1; 2222 ctrls.controls = &ctrl; 2223 ctrl.id = p->id; 2224 ctrl.value = p->value; 2225 if (check_ext_ctrls(&ctrls, 1)) { 2226 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls); 2227 2228 if (ret == 0) 2229 p->value = ctrl.value; 2230 return ret; 2231 } 2232 return -EINVAL; 2233 } 2234 2235 static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, 2236 struct file *file, void *fh, void *arg) 2237 { 2238 struct video_device *vfd = video_devdata(file); 2239 struct v4l2_control *p = arg; 2240 struct v4l2_fh *vfh = 2241 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2242 struct v4l2_ext_controls ctrls; 2243 struct v4l2_ext_control ctrl; 2244 2245 if (vfh && vfh->ctrl_handler) 2246 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p); 2247 if (vfd->ctrl_handler) 2248 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p); 2249 if (ops->vidioc_s_ctrl) 2250 return ops->vidioc_s_ctrl(file, fh, p); 2251 if (ops->vidioc_s_ext_ctrls == NULL) 2252 return -ENOTTY; 2253 2254 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2255 ctrls.count = 1; 2256 ctrls.controls = &ctrl; 2257 ctrl.id = p->id; 2258 ctrl.value = p->value; 2259 if (check_ext_ctrls(&ctrls, 1)) 2260 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls); 2261 return -EINVAL; 2262 } 2263 2264 static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2265 struct file *file, void *fh, void *arg) 2266 { 2267 struct video_device *vfd = video_devdata(file); 2268 struct v4l2_ext_controls *p = arg; 2269 struct v4l2_fh *vfh = 2270 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2271 2272 p->error_idx = p->count; 2273 if (vfh && vfh->ctrl_handler) 2274 return v4l2_g_ext_ctrls(vfh->ctrl_handler, 2275 vfd, vfd->v4l2_dev->mdev, p); 2276 if (vfd->ctrl_handler) 2277 return v4l2_g_ext_ctrls(vfd->ctrl_handler, 2278 vfd, vfd->v4l2_dev->mdev, p); 2279 if (ops->vidioc_g_ext_ctrls == NULL) 2280 return -ENOTTY; 2281 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) : 2282 -EINVAL; 2283 } 2284 2285 static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2286 struct file *file, void *fh, void *arg) 2287 { 2288 struct video_device *vfd = video_devdata(file); 2289 struct v4l2_ext_controls *p = arg; 2290 struct v4l2_fh *vfh = 2291 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2292 2293 p->error_idx = p->count; 2294 if (vfh && vfh->ctrl_handler) 2295 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, 2296 vfd, vfd->v4l2_dev->mdev, p); 2297 if (vfd->ctrl_handler) 2298 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, 2299 vfd, vfd->v4l2_dev->mdev, p); 2300 if (ops->vidioc_s_ext_ctrls == NULL) 2301 return -ENOTTY; 2302 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) : 2303 -EINVAL; 2304 } 2305 2306 static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2307 struct file *file, void *fh, void *arg) 2308 { 2309 struct video_device *vfd = video_devdata(file); 2310 struct v4l2_ext_controls *p = arg; 2311 struct v4l2_fh *vfh = 2312 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2313 2314 p->error_idx = p->count; 2315 if (vfh && vfh->ctrl_handler) 2316 return v4l2_try_ext_ctrls(vfh->ctrl_handler, 2317 vfd, vfd->v4l2_dev->mdev, p); 2318 if (vfd->ctrl_handler) 2319 return v4l2_try_ext_ctrls(vfd->ctrl_handler, 2320 vfd, vfd->v4l2_dev->mdev, p); 2321 if (ops->vidioc_try_ext_ctrls == NULL) 2322 return -ENOTTY; 2323 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) : 2324 -EINVAL; 2325 } 2326 2327 /* 2328 * The selection API specified originally that the _MPLANE buffer types 2329 * shouldn't be used. The reasons for this are lost in the mists of time 2330 * (or just really crappy memories). Regardless, this is really annoying 2331 * for userspace. So to keep things simple we map _MPLANE buffer types 2332 * to their 'regular' counterparts before calling the driver. And we 2333 * restore it afterwards. This way applications can use either buffer 2334 * type and drivers don't need to check for both. 2335 */ 2336 static int v4l_g_selection(const struct v4l2_ioctl_ops *ops, 2337 struct file *file, void *fh, void *arg) 2338 { 2339 struct v4l2_selection *p = arg; 2340 u32 old_type = p->type; 2341 int ret; 2342 2343 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2344 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2345 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2346 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2347 ret = ops->vidioc_g_selection(file, fh, p); 2348 p->type = old_type; 2349 return ret; 2350 } 2351 2352 static int v4l_s_selection(const struct v4l2_ioctl_ops *ops, 2353 struct file *file, void *fh, void *arg) 2354 { 2355 struct v4l2_selection *p = arg; 2356 u32 old_type = p->type; 2357 int ret; 2358 2359 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2360 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2361 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2362 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2363 ret = ops->vidioc_s_selection(file, fh, p); 2364 p->type = old_type; 2365 return ret; 2366 } 2367 2368 static int v4l_g_crop(const struct v4l2_ioctl_ops *ops, 2369 struct file *file, void *fh, void *arg) 2370 { 2371 struct video_device *vfd = video_devdata(file); 2372 struct v4l2_crop *p = arg; 2373 struct v4l2_selection s = { 2374 .type = p->type, 2375 }; 2376 int ret; 2377 2378 /* simulate capture crop using selection api */ 2379 2380 /* crop means compose for output devices */ 2381 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2382 s.target = V4L2_SEL_TGT_COMPOSE; 2383 else 2384 s.target = V4L2_SEL_TGT_CROP; 2385 2386 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2387 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2388 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2389 2390 ret = v4l_g_selection(ops, file, fh, &s); 2391 2392 /* copying results to old structure on success */ 2393 if (!ret) 2394 p->c = s.r; 2395 return ret; 2396 } 2397 2398 static int v4l_s_crop(const struct v4l2_ioctl_ops *ops, 2399 struct file *file, void *fh, void *arg) 2400 { 2401 struct video_device *vfd = video_devdata(file); 2402 struct v4l2_crop *p = arg; 2403 struct v4l2_selection s = { 2404 .type = p->type, 2405 .r = p->c, 2406 }; 2407 2408 /* simulate capture crop using selection api */ 2409 2410 /* crop means compose for output devices */ 2411 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2412 s.target = V4L2_SEL_TGT_COMPOSE; 2413 else 2414 s.target = V4L2_SEL_TGT_CROP; 2415 2416 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2417 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2418 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2419 2420 return v4l_s_selection(ops, file, fh, &s); 2421 } 2422 2423 static int v4l_cropcap(const struct v4l2_ioctl_ops *ops, 2424 struct file *file, void *fh, void *arg) 2425 { 2426 struct video_device *vfd = video_devdata(file); 2427 struct v4l2_cropcap *p = arg; 2428 struct v4l2_selection s = { .type = p->type }; 2429 int ret = 0; 2430 2431 /* setting trivial pixelaspect */ 2432 p->pixelaspect.numerator = 1; 2433 p->pixelaspect.denominator = 1; 2434 2435 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2436 s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2437 else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2438 s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2439 2440 /* 2441 * The determine_valid_ioctls() call already should ensure 2442 * that this can never happen, but just in case... 2443 */ 2444 if (WARN_ON(!ops->vidioc_g_selection)) 2445 return -ENOTTY; 2446 2447 if (ops->vidioc_g_pixelaspect) 2448 ret = ops->vidioc_g_pixelaspect(file, fh, s.type, 2449 &p->pixelaspect); 2450 2451 /* 2452 * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the 2453 * square pixel aspect ratio in that case. 2454 */ 2455 if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD) 2456 return ret; 2457 2458 /* Use g_selection() to fill in the bounds and defrect rectangles */ 2459 2460 /* obtaining bounds */ 2461 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2462 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS; 2463 else 2464 s.target = V4L2_SEL_TGT_CROP_BOUNDS; 2465 2466 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2467 s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ? 2468 V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS; 2469 2470 ret = v4l_g_selection(ops, file, fh, &s); 2471 if (ret) 2472 return ret; 2473 p->bounds = s.r; 2474 2475 /* obtaining defrect */ 2476 if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS) 2477 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT; 2478 else 2479 s.target = V4L2_SEL_TGT_CROP_DEFAULT; 2480 2481 ret = v4l_g_selection(ops, file, fh, &s); 2482 if (ret) 2483 return ret; 2484 p->defrect = s.r; 2485 2486 return 0; 2487 } 2488 2489 static int v4l_log_status(const struct v4l2_ioctl_ops *ops, 2490 struct file *file, void *fh, void *arg) 2491 { 2492 struct video_device *vfd = video_devdata(file); 2493 int ret; 2494 2495 if (vfd->v4l2_dev) 2496 pr_info("%s: ================= START STATUS =================\n", 2497 vfd->v4l2_dev->name); 2498 ret = ops->vidioc_log_status(file, fh); 2499 if (vfd->v4l2_dev) 2500 pr_info("%s: ================== END STATUS ==================\n", 2501 vfd->v4l2_dev->name); 2502 return ret; 2503 } 2504 2505 static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops, 2506 struct file *file, void *fh, void *arg) 2507 { 2508 #ifdef CONFIG_VIDEO_ADV_DEBUG 2509 struct v4l2_dbg_register *p = arg; 2510 struct video_device *vfd = video_devdata(file); 2511 struct v4l2_subdev *sd; 2512 int idx = 0; 2513 2514 if (!capable(CAP_SYS_ADMIN)) 2515 return -EPERM; 2516 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2517 if (vfd->v4l2_dev == NULL) 2518 return -EINVAL; 2519 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2520 if (p->match.addr == idx++) 2521 return v4l2_subdev_call(sd, core, g_register, p); 2522 return -EINVAL; 2523 } 2524 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2525 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2526 return ops->vidioc_g_register(file, fh, p); 2527 return -EINVAL; 2528 #else 2529 return -ENOTTY; 2530 #endif 2531 } 2532 2533 static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops, 2534 struct file *file, void *fh, void *arg) 2535 { 2536 #ifdef CONFIG_VIDEO_ADV_DEBUG 2537 const struct v4l2_dbg_register *p = arg; 2538 struct video_device *vfd = video_devdata(file); 2539 struct v4l2_subdev *sd; 2540 int idx = 0; 2541 2542 if (!capable(CAP_SYS_ADMIN)) 2543 return -EPERM; 2544 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2545 if (vfd->v4l2_dev == NULL) 2546 return -EINVAL; 2547 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2548 if (p->match.addr == idx++) 2549 return v4l2_subdev_call(sd, core, s_register, p); 2550 return -EINVAL; 2551 } 2552 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2553 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2554 return ops->vidioc_s_register(file, fh, p); 2555 return -EINVAL; 2556 #else 2557 return -ENOTTY; 2558 #endif 2559 } 2560 2561 static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops, 2562 struct file *file, void *fh, void *arg) 2563 { 2564 #ifdef CONFIG_VIDEO_ADV_DEBUG 2565 struct video_device *vfd = video_devdata(file); 2566 struct v4l2_dbg_chip_info *p = arg; 2567 struct v4l2_subdev *sd; 2568 int idx = 0; 2569 2570 switch (p->match.type) { 2571 case V4L2_CHIP_MATCH_BRIDGE: 2572 if (ops->vidioc_s_register) 2573 p->flags |= V4L2_CHIP_FL_WRITABLE; 2574 if (ops->vidioc_g_register) 2575 p->flags |= V4L2_CHIP_FL_READABLE; 2576 strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name)); 2577 if (ops->vidioc_g_chip_info) 2578 return ops->vidioc_g_chip_info(file, fh, arg); 2579 if (p->match.addr) 2580 return -EINVAL; 2581 return 0; 2582 2583 case V4L2_CHIP_MATCH_SUBDEV: 2584 if (vfd->v4l2_dev == NULL) 2585 break; 2586 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) { 2587 if (p->match.addr != idx++) 2588 continue; 2589 if (sd->ops->core && sd->ops->core->s_register) 2590 p->flags |= V4L2_CHIP_FL_WRITABLE; 2591 if (sd->ops->core && sd->ops->core->g_register) 2592 p->flags |= V4L2_CHIP_FL_READABLE; 2593 strscpy(p->name, sd->name, sizeof(p->name)); 2594 return 0; 2595 } 2596 break; 2597 } 2598 return -EINVAL; 2599 #else 2600 return -ENOTTY; 2601 #endif 2602 } 2603 2604 static int v4l_dqevent(const struct v4l2_ioctl_ops *ops, 2605 struct file *file, void *fh, void *arg) 2606 { 2607 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK); 2608 } 2609 2610 static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops, 2611 struct file *file, void *fh, void *arg) 2612 { 2613 return ops->vidioc_subscribe_event(fh, arg); 2614 } 2615 2616 static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops, 2617 struct file *file, void *fh, void *arg) 2618 { 2619 return ops->vidioc_unsubscribe_event(fh, arg); 2620 } 2621 2622 static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops, 2623 struct file *file, void *fh, void *arg) 2624 { 2625 struct v4l2_sliced_vbi_cap *p = arg; 2626 int ret = check_fmt(file, p->type); 2627 2628 if (ret) 2629 return ret; 2630 2631 /* Clear up to type, everything after type is zeroed already */ 2632 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type)); 2633 2634 return ops->vidioc_g_sliced_vbi_cap(file, fh, p); 2635 } 2636 2637 static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops, 2638 struct file *file, void *fh, void *arg) 2639 { 2640 struct video_device *vfd = video_devdata(file); 2641 struct v4l2_frequency_band *p = arg; 2642 enum v4l2_tuner_type type; 2643 int err; 2644 2645 if (vfd->vfl_type == VFL_TYPE_SDR) { 2646 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 2647 return -EINVAL; 2648 type = p->type; 2649 } else { 2650 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2651 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2652 if (type != p->type) 2653 return -EINVAL; 2654 } 2655 if (ops->vidioc_enum_freq_bands) { 2656 err = ops->vidioc_enum_freq_bands(file, fh, p); 2657 if (err != -ENOTTY) 2658 return err; 2659 } 2660 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) { 2661 struct v4l2_tuner t = { 2662 .index = p->tuner, 2663 .type = type, 2664 }; 2665 2666 if (p->index) 2667 return -EINVAL; 2668 err = ops->vidioc_g_tuner(file, fh, &t); 2669 if (err) 2670 return err; 2671 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2672 p->rangelow = t.rangelow; 2673 p->rangehigh = t.rangehigh; 2674 p->modulation = (type == V4L2_TUNER_RADIO) ? 2675 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2676 return 0; 2677 } 2678 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) { 2679 struct v4l2_modulator m = { 2680 .index = p->tuner, 2681 }; 2682 2683 if (type != V4L2_TUNER_RADIO) 2684 return -EINVAL; 2685 if (p->index) 2686 return -EINVAL; 2687 err = ops->vidioc_g_modulator(file, fh, &m); 2688 if (err) 2689 return err; 2690 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2691 p->rangelow = m.rangelow; 2692 p->rangehigh = m.rangehigh; 2693 p->modulation = (type == V4L2_TUNER_RADIO) ? 2694 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2695 return 0; 2696 } 2697 return -ENOTTY; 2698 } 2699 2700 struct v4l2_ioctl_info { 2701 unsigned int ioctl; 2702 u32 flags; 2703 const char * const name; 2704 int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file, 2705 void *fh, void *p); 2706 void (*debug)(const void *arg, bool write_only); 2707 }; 2708 2709 /* This control needs a priority check */ 2710 #define INFO_FL_PRIO (1 << 0) 2711 /* This control can be valid if the filehandle passes a control handler. */ 2712 #define INFO_FL_CTRL (1 << 1) 2713 /* Queuing ioctl */ 2714 #define INFO_FL_QUEUE (1 << 2) 2715 /* Always copy back result, even on error */ 2716 #define INFO_FL_ALWAYS_COPY (1 << 3) 2717 /* Zero struct from after the field to the end */ 2718 #define INFO_FL_CLEAR(v4l2_struct, field) \ 2719 ((offsetof(struct v4l2_struct, field) + \ 2720 sizeof_field(struct v4l2_struct, field)) << 16) 2721 #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16) 2722 2723 #define DEFINE_V4L_STUB_FUNC(_vidioc) \ 2724 static int v4l_stub_ ## _vidioc( \ 2725 const struct v4l2_ioctl_ops *ops, \ 2726 struct file *file, void *fh, void *p) \ 2727 { \ 2728 return ops->vidioc_ ## _vidioc(file, fh, p); \ 2729 } 2730 2731 #define IOCTL_INFO(_ioctl, _func, _debug, _flags) \ 2732 [_IOC_NR(_ioctl)] = { \ 2733 .ioctl = _ioctl, \ 2734 .flags = _flags, \ 2735 .name = #_ioctl, \ 2736 .func = _func, \ 2737 .debug = _debug, \ 2738 } 2739 2740 DEFINE_V4L_STUB_FUNC(g_fbuf) 2741 DEFINE_V4L_STUB_FUNC(s_fbuf) 2742 DEFINE_V4L_STUB_FUNC(expbuf) 2743 DEFINE_V4L_STUB_FUNC(g_std) 2744 DEFINE_V4L_STUB_FUNC(g_audio) 2745 DEFINE_V4L_STUB_FUNC(s_audio) 2746 DEFINE_V4L_STUB_FUNC(g_edid) 2747 DEFINE_V4L_STUB_FUNC(s_edid) 2748 DEFINE_V4L_STUB_FUNC(g_audout) 2749 DEFINE_V4L_STUB_FUNC(s_audout) 2750 DEFINE_V4L_STUB_FUNC(g_jpegcomp) 2751 DEFINE_V4L_STUB_FUNC(s_jpegcomp) 2752 DEFINE_V4L_STUB_FUNC(enumaudio) 2753 DEFINE_V4L_STUB_FUNC(enumaudout) 2754 DEFINE_V4L_STUB_FUNC(enum_framesizes) 2755 DEFINE_V4L_STUB_FUNC(enum_frameintervals) 2756 DEFINE_V4L_STUB_FUNC(g_enc_index) 2757 DEFINE_V4L_STUB_FUNC(encoder_cmd) 2758 DEFINE_V4L_STUB_FUNC(try_encoder_cmd) 2759 DEFINE_V4L_STUB_FUNC(decoder_cmd) 2760 DEFINE_V4L_STUB_FUNC(try_decoder_cmd) 2761 DEFINE_V4L_STUB_FUNC(s_dv_timings) 2762 DEFINE_V4L_STUB_FUNC(g_dv_timings) 2763 DEFINE_V4L_STUB_FUNC(enum_dv_timings) 2764 DEFINE_V4L_STUB_FUNC(query_dv_timings) 2765 DEFINE_V4L_STUB_FUNC(dv_timings_cap) 2766 2767 static const struct v4l2_ioctl_info v4l2_ioctls[] = { 2768 IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0), 2769 IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, 0), 2770 IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0), 2771 IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO), 2772 IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2773 IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)), 2774 IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0), 2775 IOCTL_INFO(VIDIOC_S_FBUF, v4l_stub_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO), 2776 IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO), 2777 IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE), 2778 IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)), 2779 IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE), 2780 IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2781 IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2782 IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)), 2783 IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO), 2784 IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0), 2785 IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO), 2786 IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)), 2787 IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)), 2788 IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)), 2789 IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL), 2790 IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)), 2791 IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO), 2792 IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0), 2793 IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO), 2794 IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)), 2795 IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)), 2796 IOCTL_INFO(VIDIOC_G_INPUT, v4l_g_input, v4l_print_u32, 0), 2797 IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO), 2798 IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY), 2799 IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY), 2800 IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_g_output, v4l_print_u32, 0), 2801 IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO), 2802 IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)), 2803 IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0), 2804 IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO), 2805 IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)), 2806 IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO), 2807 IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)), 2808 IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO), 2809 IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)), 2810 IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)), 2811 IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO), 2812 IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)), 2813 IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)), 2814 IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0), 2815 IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO), 2816 IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0), 2817 IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0), 2818 IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)), 2819 IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)), 2820 IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0), 2821 IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO), 2822 IOCTL_INFO(VIDIOC_G_SLICED_VBI_CAP, v4l_g_sliced_vbi_cap, v4l_print_sliced_vbi_cap, INFO_FL_CLEAR(v4l2_sliced_vbi_cap, type)), 2823 IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0), 2824 IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL), 2825 IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL), 2826 IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL), 2827 IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)), 2828 IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)), 2829 IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0), 2830 IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2831 IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2832 IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO), 2833 IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0), 2834 IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0), 2835 IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0), 2836 IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO), 2837 IOCTL_INFO(VIDIOC_S_DV_TIMINGS, v4l_stub_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_dv_timings, bt.flags)), 2838 IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0), 2839 IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0), 2840 IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0), 2841 IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0), 2842 IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2843 IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE), 2844 IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)), 2845 IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY), 2846 IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)), 2847 IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0), 2848 IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)), 2849 IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)), 2850 }; 2851 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) 2852 2853 static bool v4l2_is_known_ioctl(unsigned int cmd) 2854 { 2855 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2856 return false; 2857 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd; 2858 } 2859 2860 static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, 2861 struct v4l2_fh *vfh, unsigned int cmd, 2862 void *arg) 2863 { 2864 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2865 return vdev->lock; 2866 if (vfh && vfh->m2m_ctx && 2867 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) { 2868 if (vfh->m2m_ctx->q_lock) 2869 return vfh->m2m_ctx->q_lock; 2870 } 2871 if (vdev->queue && vdev->queue->lock && 2872 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) 2873 return vdev->queue->lock; 2874 return vdev->lock; 2875 } 2876 2877 /* Common ioctl debug function. This function can be used by 2878 external ioctl messages as well as internal V4L ioctl */ 2879 void v4l_printk_ioctl(const char *prefix, unsigned int cmd) 2880 { 2881 const char *dir, *type; 2882 2883 if (prefix) 2884 printk(KERN_DEBUG "%s: ", prefix); 2885 2886 switch (_IOC_TYPE(cmd)) { 2887 case 'd': 2888 type = "v4l2_int"; 2889 break; 2890 case 'V': 2891 if (_IOC_NR(cmd) >= V4L2_IOCTLS) { 2892 type = "v4l2"; 2893 break; 2894 } 2895 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name); 2896 return; 2897 default: 2898 type = "unknown"; 2899 break; 2900 } 2901 2902 switch (_IOC_DIR(cmd)) { 2903 case _IOC_NONE: dir = "--"; break; 2904 case _IOC_READ: dir = "r-"; break; 2905 case _IOC_WRITE: dir = "-w"; break; 2906 case _IOC_READ | _IOC_WRITE: dir = "rw"; break; 2907 default: dir = "*ERR*"; break; 2908 } 2909 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)", 2910 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd); 2911 } 2912 EXPORT_SYMBOL(v4l_printk_ioctl); 2913 2914 static long __video_do_ioctl(struct file *file, 2915 unsigned int cmd, void *arg) 2916 { 2917 struct video_device *vfd = video_devdata(file); 2918 struct mutex *req_queue_lock = NULL; 2919 struct mutex *lock; /* ioctl serialization mutex */ 2920 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 2921 bool write_only = false; 2922 struct v4l2_ioctl_info default_info; 2923 const struct v4l2_ioctl_info *info; 2924 void *fh = file->private_data; 2925 struct v4l2_fh *vfh = NULL; 2926 int dev_debug = vfd->dev_debug; 2927 long ret = -ENOTTY; 2928 2929 if (ops == NULL) { 2930 pr_warn("%s: has no ioctl_ops.\n", 2931 video_device_node_name(vfd)); 2932 return ret; 2933 } 2934 2935 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 2936 vfh = file->private_data; 2937 2938 /* 2939 * We need to serialize streamon/off with queueing new requests. 2940 * These ioctls may trigger the cancellation of a streaming 2941 * operation, and that should not be mixed with queueing a new 2942 * request at the same time. 2943 */ 2944 if (v4l2_device_supports_requests(vfd->v4l2_dev) && 2945 (cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF)) { 2946 req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex; 2947 2948 if (mutex_lock_interruptible(req_queue_lock)) 2949 return -ERESTARTSYS; 2950 } 2951 2952 lock = v4l2_ioctl_get_lock(vfd, vfh, cmd, arg); 2953 2954 if (lock && mutex_lock_interruptible(lock)) { 2955 if (req_queue_lock) 2956 mutex_unlock(req_queue_lock); 2957 return -ERESTARTSYS; 2958 } 2959 2960 if (!video_is_registered(vfd)) { 2961 ret = -ENODEV; 2962 goto unlock; 2963 } 2964 2965 if (v4l2_is_known_ioctl(cmd)) { 2966 info = &v4l2_ioctls[_IOC_NR(cmd)]; 2967 2968 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) && 2969 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler)) 2970 goto done; 2971 2972 if (vfh && (info->flags & INFO_FL_PRIO)) { 2973 ret = v4l2_prio_check(vfd->prio, vfh->prio); 2974 if (ret) 2975 goto done; 2976 } 2977 } else { 2978 default_info.ioctl = cmd; 2979 default_info.flags = 0; 2980 default_info.debug = v4l_print_default; 2981 info = &default_info; 2982 } 2983 2984 write_only = _IOC_DIR(cmd) == _IOC_WRITE; 2985 if (info != &default_info) { 2986 ret = info->func(ops, file, fh, arg); 2987 } else if (!ops->vidioc_default) { 2988 ret = -ENOTTY; 2989 } else { 2990 ret = ops->vidioc_default(file, fh, 2991 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0, 2992 cmd, arg); 2993 } 2994 2995 done: 2996 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) { 2997 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) && 2998 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF)) 2999 goto unlock; 3000 3001 v4l_printk_ioctl(video_device_node_name(vfd), cmd); 3002 if (ret < 0) 3003 pr_cont(": error %ld", ret); 3004 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG)) 3005 pr_cont("\n"); 3006 else if (_IOC_DIR(cmd) == _IOC_NONE) 3007 info->debug(arg, write_only); 3008 else { 3009 pr_cont(": "); 3010 info->debug(arg, write_only); 3011 } 3012 } 3013 3014 unlock: 3015 if (lock) 3016 mutex_unlock(lock); 3017 if (req_queue_lock) 3018 mutex_unlock(req_queue_lock); 3019 return ret; 3020 } 3021 3022 static int check_array_args(unsigned int cmd, void *parg, size_t *array_size, 3023 void __user **user_ptr, void ***kernel_ptr) 3024 { 3025 int ret = 0; 3026 3027 switch (cmd) { 3028 case VIDIOC_PREPARE_BUF: 3029 case VIDIOC_QUERYBUF: 3030 case VIDIOC_QBUF: 3031 case VIDIOC_DQBUF: { 3032 struct v4l2_buffer *buf = parg; 3033 3034 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) { 3035 if (buf->length > VIDEO_MAX_PLANES) { 3036 ret = -EINVAL; 3037 break; 3038 } 3039 *user_ptr = (void __user *)buf->m.planes; 3040 *kernel_ptr = (void **)&buf->m.planes; 3041 *array_size = sizeof(struct v4l2_plane) * buf->length; 3042 ret = 1; 3043 } 3044 break; 3045 } 3046 3047 case VIDIOC_G_EDID: 3048 case VIDIOC_S_EDID: { 3049 struct v4l2_edid *edid = parg; 3050 3051 if (edid->blocks) { 3052 if (edid->blocks > 256) { 3053 ret = -EINVAL; 3054 break; 3055 } 3056 *user_ptr = (void __user *)edid->edid; 3057 *kernel_ptr = (void **)&edid->edid; 3058 *array_size = edid->blocks * 128; 3059 ret = 1; 3060 } 3061 break; 3062 } 3063 3064 case VIDIOC_S_EXT_CTRLS: 3065 case VIDIOC_G_EXT_CTRLS: 3066 case VIDIOC_TRY_EXT_CTRLS: { 3067 struct v4l2_ext_controls *ctrls = parg; 3068 3069 if (ctrls->count != 0) { 3070 if (ctrls->count > V4L2_CID_MAX_CTRLS) { 3071 ret = -EINVAL; 3072 break; 3073 } 3074 *user_ptr = (void __user *)ctrls->controls; 3075 *kernel_ptr = (void **)&ctrls->controls; 3076 *array_size = sizeof(struct v4l2_ext_control) 3077 * ctrls->count; 3078 ret = 1; 3079 } 3080 break; 3081 } 3082 } 3083 3084 return ret; 3085 } 3086 3087 static unsigned int video_translate_cmd(unsigned int cmd) 3088 { 3089 switch (cmd) { 3090 #ifdef CONFIG_COMPAT_32BIT_TIME 3091 case VIDIOC_DQEVENT_TIME32: 3092 return VIDIOC_DQEVENT; 3093 case VIDIOC_QUERYBUF_TIME32: 3094 return VIDIOC_QUERYBUF; 3095 case VIDIOC_QBUF_TIME32: 3096 return VIDIOC_QBUF; 3097 case VIDIOC_DQBUF_TIME32: 3098 return VIDIOC_DQBUF; 3099 case VIDIOC_PREPARE_BUF_TIME32: 3100 return VIDIOC_PREPARE_BUF; 3101 #endif 3102 } 3103 3104 return cmd; 3105 } 3106 3107 static int video_get_user(void __user *arg, void *parg, unsigned int cmd, 3108 bool *always_copy) 3109 { 3110 unsigned int n = _IOC_SIZE(cmd); 3111 3112 if (!(_IOC_DIR(cmd) & _IOC_WRITE)) { 3113 /* read-only ioctl */ 3114 memset(parg, 0, n); 3115 return 0; 3116 } 3117 3118 switch (cmd) { 3119 #ifdef CONFIG_COMPAT_32BIT_TIME 3120 case VIDIOC_QUERYBUF_TIME32: 3121 case VIDIOC_QBUF_TIME32: 3122 case VIDIOC_DQBUF_TIME32: 3123 case VIDIOC_PREPARE_BUF_TIME32: { 3124 struct v4l2_buffer_time32 vb32; 3125 struct v4l2_buffer *vb = parg; 3126 3127 if (copy_from_user(&vb32, arg, sizeof(vb32))) 3128 return -EFAULT; 3129 3130 *vb = (struct v4l2_buffer) { 3131 .index = vb32.index, 3132 .type = vb32.type, 3133 .bytesused = vb32.bytesused, 3134 .flags = vb32.flags, 3135 .field = vb32.field, 3136 .timestamp.tv_sec = vb32.timestamp.tv_sec, 3137 .timestamp.tv_usec = vb32.timestamp.tv_usec, 3138 .timecode = vb32.timecode, 3139 .sequence = vb32.sequence, 3140 .memory = vb32.memory, 3141 .m.userptr = vb32.m.userptr, 3142 .length = vb32.length, 3143 .request_fd = vb32.request_fd, 3144 }; 3145 3146 if (cmd == VIDIOC_QUERYBUF_TIME32) 3147 vb->request_fd = 0; 3148 3149 break; 3150 } 3151 #endif 3152 default: 3153 /* 3154 * In some cases, only a few fields are used as input, 3155 * i.e. when the app sets "index" and then the driver 3156 * fills in the rest of the structure for the thing 3157 * with that index. We only need to copy up the first 3158 * non-input field. 3159 */ 3160 if (v4l2_is_known_ioctl(cmd)) { 3161 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags; 3162 3163 if (flags & INFO_FL_CLEAR_MASK) 3164 n = (flags & INFO_FL_CLEAR_MASK) >> 16; 3165 *always_copy = flags & INFO_FL_ALWAYS_COPY; 3166 } 3167 3168 if (copy_from_user(parg, (void __user *)arg, n)) 3169 return -EFAULT; 3170 3171 /* zero out anything we don't copy from userspace */ 3172 if (n < _IOC_SIZE(cmd)) 3173 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n); 3174 break; 3175 } 3176 3177 return 0; 3178 } 3179 3180 static int video_put_user(void __user *arg, void *parg, unsigned int cmd) 3181 { 3182 if (!(_IOC_DIR(cmd) & _IOC_READ)) 3183 return 0; 3184 3185 switch (cmd) { 3186 #ifdef CONFIG_COMPAT_32BIT_TIME 3187 case VIDIOC_DQEVENT_TIME32: { 3188 struct v4l2_event *ev = parg; 3189 struct v4l2_event_time32 ev32 = { 3190 .type = ev->type, 3191 .pending = ev->pending, 3192 .sequence = ev->sequence, 3193 .timestamp.tv_sec = ev->timestamp.tv_sec, 3194 .timestamp.tv_nsec = ev->timestamp.tv_nsec, 3195 .id = ev->id, 3196 }; 3197 3198 memcpy(&ev32.u, &ev->u, sizeof(ev->u)); 3199 memcpy(&ev32.reserved, &ev->reserved, sizeof(ev->reserved)); 3200 3201 if (copy_to_user(arg, &ev32, sizeof(ev32))) 3202 return -EFAULT; 3203 break; 3204 } 3205 case VIDIOC_QUERYBUF_TIME32: 3206 case VIDIOC_QBUF_TIME32: 3207 case VIDIOC_DQBUF_TIME32: 3208 case VIDIOC_PREPARE_BUF_TIME32: { 3209 struct v4l2_buffer *vb = parg; 3210 struct v4l2_buffer_time32 vb32 = { 3211 .index = vb->index, 3212 .type = vb->type, 3213 .bytesused = vb->bytesused, 3214 .flags = vb->flags, 3215 .field = vb->field, 3216 .timestamp.tv_sec = vb->timestamp.tv_sec, 3217 .timestamp.tv_usec = vb->timestamp.tv_usec, 3218 .timecode = vb->timecode, 3219 .sequence = vb->sequence, 3220 .memory = vb->memory, 3221 .m.userptr = vb->m.userptr, 3222 .length = vb->length, 3223 .request_fd = vb->request_fd, 3224 }; 3225 3226 if (copy_to_user(arg, &vb32, sizeof(vb32))) 3227 return -EFAULT; 3228 break; 3229 } 3230 #endif 3231 default: 3232 /* Copy results into user buffer */ 3233 if (copy_to_user(arg, parg, _IOC_SIZE(cmd))) 3234 return -EFAULT; 3235 break; 3236 } 3237 3238 return 0; 3239 } 3240 3241 long 3242 video_usercopy(struct file *file, unsigned int orig_cmd, unsigned long arg, 3243 v4l2_kioctl func) 3244 { 3245 char sbuf[128]; 3246 void *mbuf = NULL; 3247 void *parg = (void *)arg; 3248 long err = -EINVAL; 3249 bool has_array_args; 3250 bool always_copy = false; 3251 size_t array_size = 0; 3252 void __user *user_ptr = NULL; 3253 void **kernel_ptr = NULL; 3254 unsigned int cmd = video_translate_cmd(orig_cmd); 3255 const size_t ioc_size = _IOC_SIZE(cmd); 3256 3257 /* Copy arguments into temp kernel buffer */ 3258 if (_IOC_DIR(cmd) != _IOC_NONE) { 3259 if (ioc_size <= sizeof(sbuf)) { 3260 parg = sbuf; 3261 } else { 3262 /* too big to allocate from stack */ 3263 mbuf = kvmalloc(ioc_size, GFP_KERNEL); 3264 if (NULL == mbuf) 3265 return -ENOMEM; 3266 parg = mbuf; 3267 } 3268 3269 err = video_get_user((void __user *)arg, parg, orig_cmd, 3270 &always_copy); 3271 if (err) 3272 goto out; 3273 } 3274 3275 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr); 3276 if (err < 0) 3277 goto out; 3278 has_array_args = err; 3279 3280 if (has_array_args) { 3281 /* 3282 * When adding new types of array args, make sure that the 3283 * parent argument to ioctl (which contains the pointer to the 3284 * array) fits into sbuf (so that mbuf will still remain 3285 * unused up to here). 3286 */ 3287 mbuf = kvmalloc(array_size, GFP_KERNEL); 3288 err = -ENOMEM; 3289 if (NULL == mbuf) 3290 goto out_array_args; 3291 err = -EFAULT; 3292 if (copy_from_user(mbuf, user_ptr, array_size)) 3293 goto out_array_args; 3294 *kernel_ptr = mbuf; 3295 } 3296 3297 /* Handles IOCTL */ 3298 err = func(file, cmd, parg); 3299 if (err == -ENOTTY || err == -ENOIOCTLCMD) { 3300 err = -ENOTTY; 3301 goto out; 3302 } 3303 3304 if (err == 0) { 3305 if (cmd == VIDIOC_DQBUF) 3306 trace_v4l2_dqbuf(video_devdata(file)->minor, parg); 3307 else if (cmd == VIDIOC_QBUF) 3308 trace_v4l2_qbuf(video_devdata(file)->minor, parg); 3309 } 3310 3311 if (has_array_args) { 3312 *kernel_ptr = (void __force *)user_ptr; 3313 if (copy_to_user(user_ptr, mbuf, array_size)) 3314 err = -EFAULT; 3315 goto out_array_args; 3316 } 3317 /* 3318 * Some ioctls can return an error, but still have valid 3319 * results that must be returned. 3320 */ 3321 if (err < 0 && !always_copy) 3322 goto out; 3323 3324 out_array_args: 3325 if (video_put_user((void __user *)arg, parg, orig_cmd)) 3326 err = -EFAULT; 3327 out: 3328 kvfree(mbuf); 3329 return err; 3330 } 3331 3332 long video_ioctl2(struct file *file, 3333 unsigned int cmd, unsigned long arg) 3334 { 3335 return video_usercopy(file, cmd, arg, __video_do_ioctl); 3336 } 3337 EXPORT_SYMBOL(video_ioctl2); 3338