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 const char *name = v4l2_ctrl_get_name(p->id); 586 587 if (name) 588 pr_cont("name=%s, ", name); 589 pr_cont("id=0x%x, value=%d\n", p->id, p->value); 590 } 591 592 static void v4l_print_ext_controls(const void *arg, bool write_only) 593 { 594 const struct v4l2_ext_controls *p = arg; 595 int i; 596 597 pr_cont("which=0x%x, count=%d, error_idx=%d, request_fd=%d", 598 p->which, p->count, p->error_idx, p->request_fd); 599 for (i = 0; i < p->count; i++) { 600 unsigned int id = p->controls[i].id; 601 const char *name = v4l2_ctrl_get_name(id); 602 603 if (name) 604 pr_cont(", name=%s", name); 605 if (!p->controls[i].size) 606 pr_cont(", id/val=0x%x/0x%x", id, p->controls[i].value); 607 else 608 pr_cont(", id/size=0x%x/%u", id, p->controls[i].size); 609 } 610 pr_cont("\n"); 611 } 612 613 static void v4l_print_cropcap(const void *arg, bool write_only) 614 { 615 const struct v4l2_cropcap *p = arg; 616 617 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, defrect wxh=%dx%d, x,y=%d,%d, pixelaspect %d/%d\n", 618 prt_names(p->type, v4l2_type_names), 619 p->bounds.width, p->bounds.height, 620 p->bounds.left, p->bounds.top, 621 p->defrect.width, p->defrect.height, 622 p->defrect.left, p->defrect.top, 623 p->pixelaspect.numerator, p->pixelaspect.denominator); 624 } 625 626 static void v4l_print_crop(const void *arg, bool write_only) 627 { 628 const struct v4l2_crop *p = arg; 629 630 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n", 631 prt_names(p->type, v4l2_type_names), 632 p->c.width, p->c.height, 633 p->c.left, p->c.top); 634 } 635 636 static void v4l_print_selection(const void *arg, bool write_only) 637 { 638 const struct v4l2_selection *p = arg; 639 640 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n", 641 prt_names(p->type, v4l2_type_names), 642 p->target, p->flags, 643 p->r.width, p->r.height, p->r.left, p->r.top); 644 } 645 646 static void v4l_print_jpegcompression(const void *arg, bool write_only) 647 { 648 const struct v4l2_jpegcompression *p = arg; 649 650 pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n", 651 p->quality, p->APPn, p->APP_len, 652 p->COM_len, p->jpeg_markers); 653 } 654 655 static void v4l_print_enc_idx(const void *arg, bool write_only) 656 { 657 const struct v4l2_enc_idx *p = arg; 658 659 pr_cont("entries=%d, entries_cap=%d\n", 660 p->entries, p->entries_cap); 661 } 662 663 static void v4l_print_encoder_cmd(const void *arg, bool write_only) 664 { 665 const struct v4l2_encoder_cmd *p = arg; 666 667 pr_cont("cmd=%d, flags=0x%x\n", 668 p->cmd, p->flags); 669 } 670 671 static void v4l_print_decoder_cmd(const void *arg, bool write_only) 672 { 673 const struct v4l2_decoder_cmd *p = arg; 674 675 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags); 676 677 if (p->cmd == V4L2_DEC_CMD_START) 678 pr_info("speed=%d, format=%u\n", 679 p->start.speed, p->start.format); 680 else if (p->cmd == V4L2_DEC_CMD_STOP) 681 pr_info("pts=%llu\n", p->stop.pts); 682 } 683 684 static void v4l_print_dbg_chip_info(const void *arg, bool write_only) 685 { 686 const struct v4l2_dbg_chip_info *p = arg; 687 688 pr_cont("type=%u, ", p->match.type); 689 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 690 pr_cont("name=%.*s, ", 691 (int)sizeof(p->match.name), p->match.name); 692 else 693 pr_cont("addr=%u, ", p->match.addr); 694 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name); 695 } 696 697 static void v4l_print_dbg_register(const void *arg, bool write_only) 698 { 699 const struct v4l2_dbg_register *p = arg; 700 701 pr_cont("type=%u, ", p->match.type); 702 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 703 pr_cont("name=%.*s, ", 704 (int)sizeof(p->match.name), p->match.name); 705 else 706 pr_cont("addr=%u, ", p->match.addr); 707 pr_cont("reg=0x%llx, val=0x%llx\n", 708 p->reg, p->val); 709 } 710 711 static void v4l_print_dv_timings(const void *arg, bool write_only) 712 { 713 const struct v4l2_dv_timings *p = arg; 714 715 switch (p->type) { 716 case V4L2_DV_BT_656_1120: 717 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", 718 p->bt.interlaced, p->bt.pixelclock, 719 p->bt.width, p->bt.height, 720 p->bt.polarities, p->bt.hfrontporch, 721 p->bt.hsync, p->bt.hbackporch, 722 p->bt.vfrontporch, p->bt.vsync, 723 p->bt.vbackporch, p->bt.il_vfrontporch, 724 p->bt.il_vsync, p->bt.il_vbackporch, 725 p->bt.standards, p->bt.flags); 726 break; 727 default: 728 pr_cont("type=%d\n", p->type); 729 break; 730 } 731 } 732 733 static void v4l_print_enum_dv_timings(const void *arg, bool write_only) 734 { 735 const struct v4l2_enum_dv_timings *p = arg; 736 737 pr_cont("index=%u, ", p->index); 738 v4l_print_dv_timings(&p->timings, write_only); 739 } 740 741 static void v4l_print_dv_timings_cap(const void *arg, bool write_only) 742 { 743 const struct v4l2_dv_timings_cap *p = arg; 744 745 switch (p->type) { 746 case V4L2_DV_BT_656_1120: 747 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n", 748 p->bt.min_width, p->bt.max_width, 749 p->bt.min_height, p->bt.max_height, 750 p->bt.min_pixelclock, p->bt.max_pixelclock, 751 p->bt.standards, p->bt.capabilities); 752 break; 753 default: 754 pr_cont("type=%u\n", p->type); 755 break; 756 } 757 } 758 759 static void v4l_print_frmsizeenum(const void *arg, bool write_only) 760 { 761 const struct v4l2_frmsizeenum *p = arg; 762 763 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u", 764 p->index, 765 (p->pixel_format & 0xff), 766 (p->pixel_format >> 8) & 0xff, 767 (p->pixel_format >> 16) & 0xff, 768 (p->pixel_format >> 24) & 0xff, 769 p->type); 770 switch (p->type) { 771 case V4L2_FRMSIZE_TYPE_DISCRETE: 772 pr_cont(", wxh=%ux%u\n", 773 p->discrete.width, p->discrete.height); 774 break; 775 case V4L2_FRMSIZE_TYPE_STEPWISE: 776 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n", 777 p->stepwise.min_width, 778 p->stepwise.min_height, 779 p->stepwise.max_width, 780 p->stepwise.max_height, 781 p->stepwise.step_width, 782 p->stepwise.step_height); 783 break; 784 case V4L2_FRMSIZE_TYPE_CONTINUOUS: 785 /* fall through */ 786 default: 787 pr_cont("\n"); 788 break; 789 } 790 } 791 792 static void v4l_print_frmivalenum(const void *arg, bool write_only) 793 { 794 const struct v4l2_frmivalenum *p = arg; 795 796 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u", 797 p->index, 798 (p->pixel_format & 0xff), 799 (p->pixel_format >> 8) & 0xff, 800 (p->pixel_format >> 16) & 0xff, 801 (p->pixel_format >> 24) & 0xff, 802 p->width, p->height, p->type); 803 switch (p->type) { 804 case V4L2_FRMIVAL_TYPE_DISCRETE: 805 pr_cont(", fps=%d/%d\n", 806 p->discrete.numerator, 807 p->discrete.denominator); 808 break; 809 case V4L2_FRMIVAL_TYPE_STEPWISE: 810 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n", 811 p->stepwise.min.numerator, 812 p->stepwise.min.denominator, 813 p->stepwise.max.numerator, 814 p->stepwise.max.denominator, 815 p->stepwise.step.numerator, 816 p->stepwise.step.denominator); 817 break; 818 case V4L2_FRMIVAL_TYPE_CONTINUOUS: 819 /* fall through */ 820 default: 821 pr_cont("\n"); 822 break; 823 } 824 } 825 826 static void v4l_print_event(const void *arg, bool write_only) 827 { 828 const struct v4l2_event *p = arg; 829 const struct v4l2_event_ctrl *c; 830 831 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%llu.%9.9llu\n", 832 p->type, p->pending, p->sequence, p->id, 833 p->timestamp.tv_sec, p->timestamp.tv_nsec); 834 switch (p->type) { 835 case V4L2_EVENT_VSYNC: 836 printk(KERN_DEBUG "field=%s\n", 837 prt_names(p->u.vsync.field, v4l2_field_names)); 838 break; 839 case V4L2_EVENT_CTRL: 840 c = &p->u.ctrl; 841 printk(KERN_DEBUG "changes=0x%x, type=%u, ", 842 c->changes, c->type); 843 if (c->type == V4L2_CTRL_TYPE_INTEGER64) 844 pr_cont("value64=%lld, ", c->value64); 845 else 846 pr_cont("value=%d, ", c->value); 847 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n", 848 c->flags, c->minimum, c->maximum, 849 c->step, c->default_value); 850 break; 851 case V4L2_EVENT_FRAME_SYNC: 852 pr_cont("frame_sequence=%u\n", 853 p->u.frame_sync.frame_sequence); 854 break; 855 } 856 } 857 858 static void v4l_print_event_subscription(const void *arg, bool write_only) 859 { 860 const struct v4l2_event_subscription *p = arg; 861 862 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n", 863 p->type, p->id, p->flags); 864 } 865 866 static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only) 867 { 868 const struct v4l2_sliced_vbi_cap *p = arg; 869 int i; 870 871 pr_cont("type=%s, service_set=0x%08x\n", 872 prt_names(p->type, v4l2_type_names), p->service_set); 873 for (i = 0; i < 24; i++) 874 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, 875 p->service_lines[0][i], 876 p->service_lines[1][i]); 877 } 878 879 static void v4l_print_freq_band(const void *arg, bool write_only) 880 { 881 const struct v4l2_frequency_band *p = arg; 882 883 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n", 884 p->tuner, p->type, p->index, 885 p->capability, p->rangelow, 886 p->rangehigh, p->modulation); 887 } 888 889 static void v4l_print_edid(const void *arg, bool write_only) 890 { 891 const struct v4l2_edid *p = arg; 892 893 pr_cont("pad=%u, start_block=%u, blocks=%u\n", 894 p->pad, p->start_block, p->blocks); 895 } 896 897 static void v4l_print_u32(const void *arg, bool write_only) 898 { 899 pr_cont("value=%u\n", *(const u32 *)arg); 900 } 901 902 static void v4l_print_newline(const void *arg, bool write_only) 903 { 904 pr_cont("\n"); 905 } 906 907 static void v4l_print_default(const void *arg, bool write_only) 908 { 909 pr_cont("driver-specific ioctl\n"); 910 } 911 912 static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) 913 { 914 __u32 i; 915 916 /* zero the reserved fields */ 917 c->reserved[0] = 0; 918 for (i = 0; i < c->count; i++) 919 c->controls[i].reserved2[0] = 0; 920 921 /* V4L2_CID_PRIVATE_BASE cannot be used as control class 922 when using extended controls. 923 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL 924 is it allowed for backwards compatibility. 925 */ 926 if (!allow_priv && c->which == V4L2_CID_PRIVATE_BASE) 927 return 0; 928 if (!c->which) 929 return 1; 930 /* Check that all controls are from the same control class. */ 931 for (i = 0; i < c->count; i++) { 932 if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) { 933 c->error_idx = i; 934 return 0; 935 } 936 } 937 return 1; 938 } 939 940 static int check_fmt(struct file *file, enum v4l2_buf_type type) 941 { 942 const u32 vid_caps = V4L2_CAP_VIDEO_CAPTURE | 943 V4L2_CAP_VIDEO_CAPTURE_MPLANE | 944 V4L2_CAP_VIDEO_OUTPUT | 945 V4L2_CAP_VIDEO_OUTPUT_MPLANE | 946 V4L2_CAP_VIDEO_M2M | V4L2_CAP_VIDEO_M2M_MPLANE; 947 const u32 meta_caps = V4L2_CAP_META_CAPTURE | 948 V4L2_CAP_META_OUTPUT; 949 struct video_device *vfd = video_devdata(file); 950 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 951 bool is_vid = vfd->vfl_type == VFL_TYPE_VIDEO && 952 (vfd->device_caps & vid_caps); 953 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI; 954 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; 955 bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; 956 bool is_meta = vfd->vfl_type == VFL_TYPE_VIDEO && 957 (vfd->device_caps & meta_caps); 958 bool is_rx = vfd->vfl_dir != VFL_DIR_TX; 959 bool is_tx = vfd->vfl_dir != VFL_DIR_RX; 960 961 if (ops == NULL) 962 return -EINVAL; 963 964 switch (type) { 965 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 966 if ((is_vid || is_tch) && is_rx && 967 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane)) 968 return 0; 969 break; 970 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 971 if ((is_vid || is_tch) && is_rx && ops->vidioc_g_fmt_vid_cap_mplane) 972 return 0; 973 break; 974 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 975 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay) 976 return 0; 977 break; 978 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 979 if (is_vid && is_tx && 980 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane)) 981 return 0; 982 break; 983 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 984 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane) 985 return 0; 986 break; 987 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 988 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay) 989 return 0; 990 break; 991 case V4L2_BUF_TYPE_VBI_CAPTURE: 992 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap) 993 return 0; 994 break; 995 case V4L2_BUF_TYPE_VBI_OUTPUT: 996 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out) 997 return 0; 998 break; 999 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1000 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap) 1001 return 0; 1002 break; 1003 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1004 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out) 1005 return 0; 1006 break; 1007 case V4L2_BUF_TYPE_SDR_CAPTURE: 1008 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap) 1009 return 0; 1010 break; 1011 case V4L2_BUF_TYPE_SDR_OUTPUT: 1012 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out) 1013 return 0; 1014 break; 1015 case V4L2_BUF_TYPE_META_CAPTURE: 1016 if (is_meta && is_rx && ops->vidioc_g_fmt_meta_cap) 1017 return 0; 1018 break; 1019 case V4L2_BUF_TYPE_META_OUTPUT: 1020 if (is_meta && is_tx && ops->vidioc_g_fmt_meta_out) 1021 return 0; 1022 break; 1023 default: 1024 break; 1025 } 1026 return -EINVAL; 1027 } 1028 1029 static void v4l_sanitize_format(struct v4l2_format *fmt) 1030 { 1031 unsigned int offset; 1032 1033 /* Make sure num_planes is not bogus */ 1034 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE || 1035 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 1036 fmt->fmt.pix_mp.num_planes = min_t(u32, fmt->fmt.pix_mp.num_planes, 1037 VIDEO_MAX_PLANES); 1038 1039 /* 1040 * The v4l2_pix_format structure has been extended with fields that were 1041 * not previously required to be set to zero by applications. The priv 1042 * field, when set to a magic value, indicates the the extended fields 1043 * are valid. Otherwise they will contain undefined values. To simplify 1044 * the API towards drivers zero the extended fields and set the priv 1045 * field to the magic value when the extended pixel format structure 1046 * isn't used by applications. 1047 */ 1048 1049 if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && 1050 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) 1051 return; 1052 1053 if (fmt->fmt.pix.priv == V4L2_PIX_FMT_PRIV_MAGIC) 1054 return; 1055 1056 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1057 1058 offset = offsetof(struct v4l2_pix_format, priv) 1059 + sizeof(fmt->fmt.pix.priv); 1060 memset(((void *)&fmt->fmt.pix) + offset, 0, 1061 sizeof(fmt->fmt.pix) - offset); 1062 } 1063 1064 static int v4l_querycap(const struct v4l2_ioctl_ops *ops, 1065 struct file *file, void *fh, void *arg) 1066 { 1067 struct v4l2_capability *cap = (struct v4l2_capability *)arg; 1068 struct video_device *vfd = video_devdata(file); 1069 int ret; 1070 1071 cap->version = LINUX_VERSION_CODE; 1072 cap->device_caps = vfd->device_caps; 1073 cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS; 1074 1075 ret = ops->vidioc_querycap(file, fh, cap); 1076 1077 /* 1078 * Drivers must not change device_caps, so check for this and 1079 * warn if this happened. 1080 */ 1081 WARN_ON(cap->device_caps != vfd->device_caps); 1082 /* 1083 * Check that capabilities is a superset of 1084 * vfd->device_caps | V4L2_CAP_DEVICE_CAPS 1085 */ 1086 WARN_ON((cap->capabilities & 1087 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)) != 1088 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)); 1089 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT; 1090 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT; 1091 1092 return ret; 1093 } 1094 1095 static int v4l_g_input(const struct v4l2_ioctl_ops *ops, 1096 struct file *file, void *fh, void *arg) 1097 { 1098 struct video_device *vfd = video_devdata(file); 1099 1100 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1101 *(int *)arg = 0; 1102 return 0; 1103 } 1104 1105 return ops->vidioc_g_input(file, fh, arg); 1106 } 1107 1108 static int v4l_g_output(const struct v4l2_ioctl_ops *ops, 1109 struct file *file, void *fh, void *arg) 1110 { 1111 struct video_device *vfd = video_devdata(file); 1112 1113 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1114 *(int *)arg = 0; 1115 return 0; 1116 } 1117 1118 return ops->vidioc_g_output(file, fh, arg); 1119 } 1120 1121 static int v4l_s_input(const struct v4l2_ioctl_ops *ops, 1122 struct file *file, void *fh, void *arg) 1123 { 1124 struct video_device *vfd = video_devdata(file); 1125 int ret; 1126 1127 ret = v4l_enable_media_source(vfd); 1128 if (ret) 1129 return ret; 1130 1131 if (vfd->device_caps & V4L2_CAP_IO_MC) 1132 return *(int *)arg ? -EINVAL : 0; 1133 1134 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg); 1135 } 1136 1137 static int v4l_s_output(const struct v4l2_ioctl_ops *ops, 1138 struct file *file, void *fh, void *arg) 1139 { 1140 struct video_device *vfd = video_devdata(file); 1141 1142 if (vfd->device_caps & V4L2_CAP_IO_MC) 1143 return *(int *)arg ? -EINVAL : 0; 1144 1145 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg); 1146 } 1147 1148 static int v4l_g_priority(const struct v4l2_ioctl_ops *ops, 1149 struct file *file, void *fh, void *arg) 1150 { 1151 struct video_device *vfd; 1152 u32 *p = arg; 1153 1154 vfd = video_devdata(file); 1155 *p = v4l2_prio_max(vfd->prio); 1156 return 0; 1157 } 1158 1159 static int v4l_s_priority(const struct v4l2_ioctl_ops *ops, 1160 struct file *file, void *fh, void *arg) 1161 { 1162 struct video_device *vfd; 1163 struct v4l2_fh *vfh; 1164 u32 *p = arg; 1165 1166 vfd = video_devdata(file); 1167 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 1168 return -ENOTTY; 1169 vfh = file->private_data; 1170 return v4l2_prio_change(vfd->prio, &vfh->prio, *p); 1171 } 1172 1173 static int v4l_enuminput(const struct v4l2_ioctl_ops *ops, 1174 struct file *file, void *fh, void *arg) 1175 { 1176 struct video_device *vfd = video_devdata(file); 1177 struct v4l2_input *p = arg; 1178 1179 /* 1180 * We set the flags for CAP_DV_TIMINGS & 1181 * CAP_STD here based on ioctl handler provided by the 1182 * driver. If the driver doesn't support these 1183 * for a specific input, it must override these flags. 1184 */ 1185 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1186 p->capabilities |= V4L2_IN_CAP_STD; 1187 1188 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1189 if (p->index) 1190 return -EINVAL; 1191 strscpy(p->name, vfd->name, sizeof(p->name)); 1192 p->type = V4L2_INPUT_TYPE_CAMERA; 1193 return 0; 1194 } 1195 1196 return ops->vidioc_enum_input(file, fh, p); 1197 } 1198 1199 static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops, 1200 struct file *file, void *fh, void *arg) 1201 { 1202 struct video_device *vfd = video_devdata(file); 1203 struct v4l2_output *p = arg; 1204 1205 /* 1206 * We set the flags for CAP_DV_TIMINGS & 1207 * CAP_STD here based on ioctl handler provided by the 1208 * driver. If the driver doesn't support these 1209 * for a specific output, it must override these flags. 1210 */ 1211 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1212 p->capabilities |= V4L2_OUT_CAP_STD; 1213 1214 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1215 if (p->index) 1216 return -EINVAL; 1217 strscpy(p->name, vfd->name, sizeof(p->name)); 1218 p->type = V4L2_OUTPUT_TYPE_ANALOG; 1219 return 0; 1220 } 1221 1222 return ops->vidioc_enum_output(file, fh, p); 1223 } 1224 1225 static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) 1226 { 1227 const unsigned sz = sizeof(fmt->description); 1228 const char *descr = NULL; 1229 u32 flags = 0; 1230 1231 /* 1232 * We depart from the normal coding style here since the descriptions 1233 * should be aligned so it is easy to see which descriptions will be 1234 * longer than 31 characters (the max length for a description). 1235 * And frankly, this is easier to read anyway. 1236 * 1237 * Note that gcc will use O(log N) comparisons to find the right case. 1238 */ 1239 switch (fmt->pixelformat) { 1240 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1241 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break; 1242 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break; 1243 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break; 1244 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break; 1245 case V4L2_PIX_FMT_RGBA444: descr = "16-bit RGBA 4-4-4-4"; break; 1246 case V4L2_PIX_FMT_RGBX444: descr = "16-bit RGBX 4-4-4-4"; break; 1247 case V4L2_PIX_FMT_ABGR444: descr = "16-bit ABGR 4-4-4-4"; break; 1248 case V4L2_PIX_FMT_XBGR444: descr = "16-bit XBGR 4-4-4-4"; break; 1249 case V4L2_PIX_FMT_BGRA444: descr = "16-bit BGRA 4-4-4-4"; break; 1250 case V4L2_PIX_FMT_BGRX444: descr = "16-bit BGRX 4-4-4-4"; break; 1251 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break; 1252 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break; 1253 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break; 1254 case V4L2_PIX_FMT_ABGR555: descr = "16-bit ABGR 1-5-5-5"; break; 1255 case V4L2_PIX_FMT_XBGR555: descr = "16-bit XBGR 1-5-5-5"; break; 1256 case V4L2_PIX_FMT_RGBA555: descr = "16-bit RGBA 5-5-5-1"; break; 1257 case V4L2_PIX_FMT_RGBX555: descr = "16-bit RGBX 5-5-5-1"; break; 1258 case V4L2_PIX_FMT_BGRA555: descr = "16-bit BGRA 5-5-5-1"; break; 1259 case V4L2_PIX_FMT_BGRX555: descr = "16-bit BGRX 5-5-5-1"; break; 1260 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break; 1261 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break; 1262 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break; 1263 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break; 1264 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break; 1265 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break; 1266 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break; 1267 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break; 1268 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break; 1269 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break; 1270 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break; 1271 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break; 1272 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break; 1273 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break; 1274 case V4L2_PIX_FMT_BGRA32: descr = "32-bit ABGR 8-8-8-8"; break; 1275 case V4L2_PIX_FMT_BGRX32: descr = "32-bit XBGR 8-8-8-8"; break; 1276 case V4L2_PIX_FMT_RGBA32: descr = "32-bit RGBA 8-8-8-8"; break; 1277 case V4L2_PIX_FMT_RGBX32: descr = "32-bit RGBX 8-8-8-8"; break; 1278 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break; 1279 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break; 1280 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break; 1281 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break; 1282 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break; 1283 case V4L2_PIX_FMT_Y14: descr = "14-bit Greyscale"; break; 1284 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break; 1285 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break; 1286 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break; 1287 case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break; 1288 case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break; 1289 case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break; 1290 case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break; 1291 case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break; 1292 case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break; 1293 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break; 1294 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break; 1295 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break; 1296 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break; 1297 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break; 1298 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break; 1299 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break; 1300 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break; 1301 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break; 1302 case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break; 1303 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break; 1304 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break; 1305 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break; 1306 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break; 1307 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break; 1308 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break; 1309 case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break; 1310 case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break; 1311 case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break; 1312 case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break; 1313 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break; 1314 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break; 1315 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break; 1316 case V4L2_PIX_FMT_HM12: descr = "YUV 4:2:0 (16x16 Macroblocks)"; break; 1317 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break; 1318 case V4L2_PIX_FMT_NV12: descr = "Y/CbCr 4:2:0"; break; 1319 case V4L2_PIX_FMT_NV21: descr = "Y/CrCb 4:2:0"; break; 1320 case V4L2_PIX_FMT_NV16: descr = "Y/CbCr 4:2:2"; break; 1321 case V4L2_PIX_FMT_NV61: descr = "Y/CrCb 4:2:2"; break; 1322 case V4L2_PIX_FMT_NV24: descr = "Y/CbCr 4:4:4"; break; 1323 case V4L2_PIX_FMT_NV42: descr = "Y/CrCb 4:4:4"; break; 1324 case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break; 1325 case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break; 1326 case V4L2_PIX_FMT_NV16M: descr = "Y/CbCr 4:2:2 (N-C)"; break; 1327 case V4L2_PIX_FMT_NV61M: descr = "Y/CrCb 4:2:2 (N-C)"; break; 1328 case V4L2_PIX_FMT_NV12MT: descr = "Y/CbCr 4:2:0 (64x32 MB, N-C)"; break; 1329 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/CbCr 4:2:0 (16x16 MB, N-C)"; break; 1330 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break; 1331 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break; 1332 case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break; 1333 case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break; 1334 case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break; 1335 case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break; 1336 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break; 1337 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break; 1338 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break; 1339 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break; 1340 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break; 1341 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break; 1342 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break; 1343 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break; 1344 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break; 1345 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break; 1346 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break; 1347 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break; 1348 case V4L2_PIX_FMT_IPU3_SBGGR10: descr = "10-bit bayer BGGR IPU3 Packed"; break; 1349 case V4L2_PIX_FMT_IPU3_SGBRG10: descr = "10-bit bayer GBRG IPU3 Packed"; break; 1350 case V4L2_PIX_FMT_IPU3_SGRBG10: descr = "10-bit bayer GRBG IPU3 Packed"; break; 1351 case V4L2_PIX_FMT_IPU3_SRGGB10: descr = "10-bit bayer RGGB IPU3 Packed"; break; 1352 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break; 1353 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break; 1354 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break; 1355 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break; 1356 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break; 1357 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break; 1358 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break; 1359 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break; 1360 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break; 1361 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break; 1362 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break; 1363 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break; 1364 case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break; 1365 case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break; 1366 case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break; 1367 case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break; 1368 case V4L2_PIX_FMT_SBGGR14: descr = "14-bit Bayer BGBG/GRGR"; break; 1369 case V4L2_PIX_FMT_SGBRG14: descr = "14-bit Bayer GBGB/RGRG"; break; 1370 case V4L2_PIX_FMT_SGRBG14: descr = "14-bit Bayer GRGR/BGBG"; break; 1371 case V4L2_PIX_FMT_SRGGB14: descr = "14-bit Bayer RGRG/GBGB"; break; 1372 case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break; 1373 case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break; 1374 case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break; 1375 case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break; 1376 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break; 1377 case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break; 1378 case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break; 1379 case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break; 1380 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break; 1381 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break; 1382 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break; 1383 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break; 1384 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break; 1385 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break; 1386 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break; 1387 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break; 1388 case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break; 1389 case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break; 1390 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break; 1391 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break; 1392 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break; 1393 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break; 1394 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break; 1395 case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break; 1396 case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break; 1397 case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break; 1398 case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit Signed Deltas"; break; 1399 case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit Signed Deltas"; break; 1400 case V4L2_TCH_FMT_TU16: descr = "16-bit Unsigned Touch Data"; break; 1401 case V4L2_TCH_FMT_TU08: descr = "8-bit Unsigned Touch Data"; break; 1402 case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break; 1403 case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break; 1404 case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break; 1405 case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break; 1406 case V4L2_META_FMT_VIVID: descr = "Vivid Metadata"; break; 1407 1408 default: 1409 /* Compressed formats */ 1410 flags = V4L2_FMT_FLAG_COMPRESSED; 1411 switch (fmt->pixelformat) { 1412 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1413 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break; 1414 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break; 1415 case V4L2_PIX_FMT_DV: descr = "1394"; break; 1416 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break; 1417 case V4L2_PIX_FMT_H264: descr = "H.264"; break; 1418 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break; 1419 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break; 1420 case V4L2_PIX_FMT_H264_SLICE: descr = "H.264 Parsed Slice Data"; break; 1421 case V4L2_PIX_FMT_H263: descr = "H.263"; break; 1422 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break; 1423 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break; 1424 case V4L2_PIX_FMT_MPEG2_SLICE: descr = "MPEG-2 Parsed Slice Data"; break; 1425 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 Part 2 ES"; break; 1426 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break; 1427 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break; 1428 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break; 1429 case V4L2_PIX_FMT_VP8: descr = "VP8"; break; 1430 case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break; 1431 case V4L2_PIX_FMT_VP9: descr = "VP9"; break; 1432 case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */ 1433 case V4L2_PIX_FMT_HEVC_SLICE: descr = "HEVC Parsed Slice Data"; break; 1434 case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */ 1435 case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */ 1436 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break; 1437 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break; 1438 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break; 1439 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break; 1440 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break; 1441 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break; 1442 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break; 1443 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break; 1444 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break; 1445 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break; 1446 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break; 1447 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break; 1448 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break; 1449 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break; 1450 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break; 1451 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break; 1452 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break; 1453 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break; 1454 case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break; 1455 case V4L2_PIX_FMT_SUNXI_TILED_NV12: descr = "Sunxi Tiled NV12 Format"; break; 1456 default: 1457 if (fmt->description[0]) 1458 return; 1459 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat); 1460 flags = 0; 1461 snprintf(fmt->description, sz, "%c%c%c%c%s", 1462 (char)(fmt->pixelformat & 0x7f), 1463 (char)((fmt->pixelformat >> 8) & 0x7f), 1464 (char)((fmt->pixelformat >> 16) & 0x7f), 1465 (char)((fmt->pixelformat >> 24) & 0x7f), 1466 (fmt->pixelformat & (1UL << 31)) ? "-BE" : ""); 1467 break; 1468 } 1469 } 1470 1471 if (descr) 1472 WARN_ON(strscpy(fmt->description, descr, sz) < 0); 1473 fmt->flags |= flags; 1474 } 1475 1476 static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops, 1477 struct file *file, void *fh, void *arg) 1478 { 1479 struct video_device *vdev = video_devdata(file); 1480 struct v4l2_fmtdesc *p = arg; 1481 int ret = check_fmt(file, p->type); 1482 u32 mbus_code; 1483 u32 cap_mask; 1484 1485 if (ret) 1486 return ret; 1487 ret = -EINVAL; 1488 1489 if (!(vdev->device_caps & V4L2_CAP_IO_MC)) 1490 p->mbus_code = 0; 1491 1492 mbus_code = p->mbus_code; 1493 CLEAR_AFTER_FIELD(p, type); 1494 p->mbus_code = mbus_code; 1495 1496 switch (p->type) { 1497 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1498 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1499 cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE | 1500 V4L2_CAP_VIDEO_M2M_MPLANE; 1501 if (!!(vdev->device_caps & cap_mask) != 1502 (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) 1503 break; 1504 1505 if (unlikely(!ops->vidioc_enum_fmt_vid_cap)) 1506 break; 1507 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg); 1508 break; 1509 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1510 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay)) 1511 break; 1512 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg); 1513 break; 1514 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1515 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1516 cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE | 1517 V4L2_CAP_VIDEO_M2M_MPLANE; 1518 if (!!(vdev->device_caps & cap_mask) != 1519 (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)) 1520 break; 1521 1522 if (unlikely(!ops->vidioc_enum_fmt_vid_out)) 1523 break; 1524 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg); 1525 break; 1526 case V4L2_BUF_TYPE_SDR_CAPTURE: 1527 if (unlikely(!ops->vidioc_enum_fmt_sdr_cap)) 1528 break; 1529 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg); 1530 break; 1531 case V4L2_BUF_TYPE_SDR_OUTPUT: 1532 if (unlikely(!ops->vidioc_enum_fmt_sdr_out)) 1533 break; 1534 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg); 1535 break; 1536 case V4L2_BUF_TYPE_META_CAPTURE: 1537 if (unlikely(!ops->vidioc_enum_fmt_meta_cap)) 1538 break; 1539 ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg); 1540 break; 1541 case V4L2_BUF_TYPE_META_OUTPUT: 1542 if (unlikely(!ops->vidioc_enum_fmt_meta_out)) 1543 break; 1544 ret = ops->vidioc_enum_fmt_meta_out(file, fh, arg); 1545 break; 1546 } 1547 if (ret == 0) 1548 v4l_fill_fmtdesc(p); 1549 return ret; 1550 } 1551 1552 static void v4l_pix_format_touch(struct v4l2_pix_format *p) 1553 { 1554 /* 1555 * The v4l2_pix_format structure contains fields that make no sense for 1556 * touch. Set them to default values in this case. 1557 */ 1558 1559 p->field = V4L2_FIELD_NONE; 1560 p->colorspace = V4L2_COLORSPACE_RAW; 1561 p->flags = 0; 1562 p->ycbcr_enc = 0; 1563 p->quantization = 0; 1564 p->xfer_func = 0; 1565 } 1566 1567 static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, 1568 struct file *file, void *fh, void *arg) 1569 { 1570 struct v4l2_format *p = arg; 1571 struct video_device *vfd = video_devdata(file); 1572 int ret = check_fmt(file, p->type); 1573 1574 if (ret) 1575 return ret; 1576 1577 /* 1578 * fmt can't be cleared for these overlay types due to the 'clips' 1579 * 'clipcount' and 'bitmap' pointers in struct v4l2_window. 1580 * Those are provided by the user. So handle these two overlay types 1581 * first, and then just do a simple memset for the other types. 1582 */ 1583 switch (p->type) { 1584 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1585 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: { 1586 struct v4l2_clip __user *clips = p->fmt.win.clips; 1587 u32 clipcount = p->fmt.win.clipcount; 1588 void __user *bitmap = p->fmt.win.bitmap; 1589 1590 memset(&p->fmt, 0, sizeof(p->fmt)); 1591 p->fmt.win.clips = clips; 1592 p->fmt.win.clipcount = clipcount; 1593 p->fmt.win.bitmap = bitmap; 1594 break; 1595 } 1596 default: 1597 memset(&p->fmt, 0, sizeof(p->fmt)); 1598 break; 1599 } 1600 1601 switch (p->type) { 1602 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1603 if (unlikely(!ops->vidioc_g_fmt_vid_cap)) 1604 break; 1605 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1606 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg); 1607 /* just in case the driver zeroed it again */ 1608 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1609 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1610 v4l_pix_format_touch(&p->fmt.pix); 1611 return ret; 1612 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1613 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg); 1614 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1615 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg); 1616 case V4L2_BUF_TYPE_VBI_CAPTURE: 1617 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg); 1618 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1619 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg); 1620 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1621 if (unlikely(!ops->vidioc_g_fmt_vid_out)) 1622 break; 1623 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1624 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg); 1625 /* just in case the driver zeroed it again */ 1626 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1627 return ret; 1628 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1629 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg); 1630 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1631 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg); 1632 case V4L2_BUF_TYPE_VBI_OUTPUT: 1633 return ops->vidioc_g_fmt_vbi_out(file, fh, arg); 1634 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1635 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg); 1636 case V4L2_BUF_TYPE_SDR_CAPTURE: 1637 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg); 1638 case V4L2_BUF_TYPE_SDR_OUTPUT: 1639 return ops->vidioc_g_fmt_sdr_out(file, fh, arg); 1640 case V4L2_BUF_TYPE_META_CAPTURE: 1641 return ops->vidioc_g_fmt_meta_cap(file, fh, arg); 1642 case V4L2_BUF_TYPE_META_OUTPUT: 1643 return ops->vidioc_g_fmt_meta_out(file, fh, arg); 1644 } 1645 return -EINVAL; 1646 } 1647 1648 static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, 1649 struct file *file, void *fh, void *arg) 1650 { 1651 struct v4l2_format *p = arg; 1652 struct video_device *vfd = video_devdata(file); 1653 int ret = check_fmt(file, p->type); 1654 unsigned int i; 1655 1656 if (ret) 1657 return ret; 1658 1659 ret = v4l_enable_media_source(vfd); 1660 if (ret) 1661 return ret; 1662 v4l_sanitize_format(p); 1663 1664 switch (p->type) { 1665 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1666 if (unlikely(!ops->vidioc_s_fmt_vid_cap)) 1667 break; 1668 CLEAR_AFTER_FIELD(p, fmt.pix); 1669 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg); 1670 /* just in case the driver zeroed it again */ 1671 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1672 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1673 v4l_pix_format_touch(&p->fmt.pix); 1674 return ret; 1675 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1676 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane)) 1677 break; 1678 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1679 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1680 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1681 bytesperline); 1682 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg); 1683 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1684 if (unlikely(!ops->vidioc_s_fmt_vid_overlay)) 1685 break; 1686 CLEAR_AFTER_FIELD(p, fmt.win); 1687 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg); 1688 case V4L2_BUF_TYPE_VBI_CAPTURE: 1689 if (unlikely(!ops->vidioc_s_fmt_vbi_cap)) 1690 break; 1691 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1692 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg); 1693 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1694 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap)) 1695 break; 1696 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1697 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg); 1698 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1699 if (unlikely(!ops->vidioc_s_fmt_vid_out)) 1700 break; 1701 CLEAR_AFTER_FIELD(p, fmt.pix); 1702 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg); 1703 /* just in case the driver zeroed it again */ 1704 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1705 return ret; 1706 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1707 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane)) 1708 break; 1709 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1710 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1711 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1712 bytesperline); 1713 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg); 1714 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1715 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay)) 1716 break; 1717 CLEAR_AFTER_FIELD(p, fmt.win); 1718 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg); 1719 case V4L2_BUF_TYPE_VBI_OUTPUT: 1720 if (unlikely(!ops->vidioc_s_fmt_vbi_out)) 1721 break; 1722 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1723 return ops->vidioc_s_fmt_vbi_out(file, fh, arg); 1724 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1725 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out)) 1726 break; 1727 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1728 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg); 1729 case V4L2_BUF_TYPE_SDR_CAPTURE: 1730 if (unlikely(!ops->vidioc_s_fmt_sdr_cap)) 1731 break; 1732 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1733 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg); 1734 case V4L2_BUF_TYPE_SDR_OUTPUT: 1735 if (unlikely(!ops->vidioc_s_fmt_sdr_out)) 1736 break; 1737 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1738 return ops->vidioc_s_fmt_sdr_out(file, fh, arg); 1739 case V4L2_BUF_TYPE_META_CAPTURE: 1740 if (unlikely(!ops->vidioc_s_fmt_meta_cap)) 1741 break; 1742 CLEAR_AFTER_FIELD(p, fmt.meta); 1743 return ops->vidioc_s_fmt_meta_cap(file, fh, arg); 1744 case V4L2_BUF_TYPE_META_OUTPUT: 1745 if (unlikely(!ops->vidioc_s_fmt_meta_out)) 1746 break; 1747 CLEAR_AFTER_FIELD(p, fmt.meta); 1748 return ops->vidioc_s_fmt_meta_out(file, fh, arg); 1749 } 1750 return -EINVAL; 1751 } 1752 1753 static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, 1754 struct file *file, void *fh, void *arg) 1755 { 1756 struct v4l2_format *p = arg; 1757 struct video_device *vfd = video_devdata(file); 1758 int ret = check_fmt(file, p->type); 1759 unsigned int i; 1760 1761 if (ret) 1762 return ret; 1763 1764 v4l_sanitize_format(p); 1765 1766 switch (p->type) { 1767 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1768 if (unlikely(!ops->vidioc_try_fmt_vid_cap)) 1769 break; 1770 CLEAR_AFTER_FIELD(p, fmt.pix); 1771 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg); 1772 /* just in case the driver zeroed it again */ 1773 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1774 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1775 v4l_pix_format_touch(&p->fmt.pix); 1776 return ret; 1777 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1778 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane)) 1779 break; 1780 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1781 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1782 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1783 bytesperline); 1784 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg); 1785 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1786 if (unlikely(!ops->vidioc_try_fmt_vid_overlay)) 1787 break; 1788 CLEAR_AFTER_FIELD(p, fmt.win); 1789 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg); 1790 case V4L2_BUF_TYPE_VBI_CAPTURE: 1791 if (unlikely(!ops->vidioc_try_fmt_vbi_cap)) 1792 break; 1793 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1794 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg); 1795 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1796 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap)) 1797 break; 1798 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1799 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg); 1800 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1801 if (unlikely(!ops->vidioc_try_fmt_vid_out)) 1802 break; 1803 CLEAR_AFTER_FIELD(p, fmt.pix); 1804 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg); 1805 /* just in case the driver zeroed it again */ 1806 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1807 return ret; 1808 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1809 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane)) 1810 break; 1811 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1812 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1813 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1814 bytesperline); 1815 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg); 1816 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1817 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay)) 1818 break; 1819 CLEAR_AFTER_FIELD(p, fmt.win); 1820 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg); 1821 case V4L2_BUF_TYPE_VBI_OUTPUT: 1822 if (unlikely(!ops->vidioc_try_fmt_vbi_out)) 1823 break; 1824 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1825 return ops->vidioc_try_fmt_vbi_out(file, fh, arg); 1826 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1827 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out)) 1828 break; 1829 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1830 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg); 1831 case V4L2_BUF_TYPE_SDR_CAPTURE: 1832 if (unlikely(!ops->vidioc_try_fmt_sdr_cap)) 1833 break; 1834 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1835 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg); 1836 case V4L2_BUF_TYPE_SDR_OUTPUT: 1837 if (unlikely(!ops->vidioc_try_fmt_sdr_out)) 1838 break; 1839 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1840 return ops->vidioc_try_fmt_sdr_out(file, fh, arg); 1841 case V4L2_BUF_TYPE_META_CAPTURE: 1842 if (unlikely(!ops->vidioc_try_fmt_meta_cap)) 1843 break; 1844 CLEAR_AFTER_FIELD(p, fmt.meta); 1845 return ops->vidioc_try_fmt_meta_cap(file, fh, arg); 1846 case V4L2_BUF_TYPE_META_OUTPUT: 1847 if (unlikely(!ops->vidioc_try_fmt_meta_out)) 1848 break; 1849 CLEAR_AFTER_FIELD(p, fmt.meta); 1850 return ops->vidioc_try_fmt_meta_out(file, fh, arg); 1851 } 1852 return -EINVAL; 1853 } 1854 1855 static int v4l_streamon(const struct v4l2_ioctl_ops *ops, 1856 struct file *file, void *fh, void *arg) 1857 { 1858 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg); 1859 } 1860 1861 static int v4l_streamoff(const struct v4l2_ioctl_ops *ops, 1862 struct file *file, void *fh, void *arg) 1863 { 1864 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg); 1865 } 1866 1867 static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops, 1868 struct file *file, void *fh, void *arg) 1869 { 1870 struct video_device *vfd = video_devdata(file); 1871 struct v4l2_tuner *p = arg; 1872 int err; 1873 1874 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1875 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1876 err = ops->vidioc_g_tuner(file, fh, p); 1877 if (!err) 1878 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1879 return err; 1880 } 1881 1882 static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops, 1883 struct file *file, void *fh, void *arg) 1884 { 1885 struct video_device *vfd = video_devdata(file); 1886 struct v4l2_tuner *p = arg; 1887 int ret; 1888 1889 ret = v4l_enable_media_source(vfd); 1890 if (ret) 1891 return ret; 1892 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1893 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1894 return ops->vidioc_s_tuner(file, fh, p); 1895 } 1896 1897 static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops, 1898 struct file *file, void *fh, void *arg) 1899 { 1900 struct video_device *vfd = video_devdata(file); 1901 struct v4l2_modulator *p = arg; 1902 int err; 1903 1904 if (vfd->vfl_type == VFL_TYPE_RADIO) 1905 p->type = V4L2_TUNER_RADIO; 1906 1907 err = ops->vidioc_g_modulator(file, fh, p); 1908 if (!err) 1909 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1910 return err; 1911 } 1912 1913 static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops, 1914 struct file *file, void *fh, void *arg) 1915 { 1916 struct video_device *vfd = video_devdata(file); 1917 struct v4l2_modulator *p = arg; 1918 1919 if (vfd->vfl_type == VFL_TYPE_RADIO) 1920 p->type = V4L2_TUNER_RADIO; 1921 1922 return ops->vidioc_s_modulator(file, fh, p); 1923 } 1924 1925 static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops, 1926 struct file *file, void *fh, void *arg) 1927 { 1928 struct video_device *vfd = video_devdata(file); 1929 struct v4l2_frequency *p = arg; 1930 1931 if (vfd->vfl_type == VFL_TYPE_SDR) 1932 p->type = V4L2_TUNER_SDR; 1933 else 1934 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1935 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1936 return ops->vidioc_g_frequency(file, fh, p); 1937 } 1938 1939 static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops, 1940 struct file *file, void *fh, void *arg) 1941 { 1942 struct video_device *vfd = video_devdata(file); 1943 const struct v4l2_frequency *p = arg; 1944 enum v4l2_tuner_type type; 1945 int ret; 1946 1947 ret = v4l_enable_media_source(vfd); 1948 if (ret) 1949 return ret; 1950 if (vfd->vfl_type == VFL_TYPE_SDR) { 1951 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 1952 return -EINVAL; 1953 } else { 1954 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1955 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1956 if (type != p->type) 1957 return -EINVAL; 1958 } 1959 return ops->vidioc_s_frequency(file, fh, p); 1960 } 1961 1962 static int v4l_enumstd(const struct v4l2_ioctl_ops *ops, 1963 struct file *file, void *fh, void *arg) 1964 { 1965 struct video_device *vfd = video_devdata(file); 1966 struct v4l2_standard *p = arg; 1967 1968 return v4l_video_std_enumstd(p, vfd->tvnorms); 1969 } 1970 1971 static int v4l_s_std(const struct v4l2_ioctl_ops *ops, 1972 struct file *file, void *fh, void *arg) 1973 { 1974 struct video_device *vfd = video_devdata(file); 1975 v4l2_std_id id = *(v4l2_std_id *)arg, norm; 1976 int ret; 1977 1978 ret = v4l_enable_media_source(vfd); 1979 if (ret) 1980 return ret; 1981 norm = id & vfd->tvnorms; 1982 if (vfd->tvnorms && !norm) /* Check if std is supported */ 1983 return -EINVAL; 1984 1985 /* Calls the specific handler */ 1986 return ops->vidioc_s_std(file, fh, norm); 1987 } 1988 1989 static int v4l_querystd(const struct v4l2_ioctl_ops *ops, 1990 struct file *file, void *fh, void *arg) 1991 { 1992 struct video_device *vfd = video_devdata(file); 1993 v4l2_std_id *p = arg; 1994 int ret; 1995 1996 ret = v4l_enable_media_source(vfd); 1997 if (ret) 1998 return ret; 1999 /* 2000 * If no signal is detected, then the driver should return 2001 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with 2002 * any standards that do not apply removed. 2003 * 2004 * This means that tuners, audio and video decoders can join 2005 * their efforts to improve the standards detection. 2006 */ 2007 *p = vfd->tvnorms; 2008 return ops->vidioc_querystd(file, fh, arg); 2009 } 2010 2011 static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops, 2012 struct file *file, void *fh, void *arg) 2013 { 2014 struct video_device *vfd = video_devdata(file); 2015 struct v4l2_hw_freq_seek *p = arg; 2016 enum v4l2_tuner_type type; 2017 int ret; 2018 2019 ret = v4l_enable_media_source(vfd); 2020 if (ret) 2021 return ret; 2022 /* s_hw_freq_seek is not supported for SDR for now */ 2023 if (vfd->vfl_type == VFL_TYPE_SDR) 2024 return -EINVAL; 2025 2026 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2027 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2028 if (p->type != type) 2029 return -EINVAL; 2030 return ops->vidioc_s_hw_freq_seek(file, fh, p); 2031 } 2032 2033 static int v4l_overlay(const struct v4l2_ioctl_ops *ops, 2034 struct file *file, void *fh, void *arg) 2035 { 2036 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg); 2037 } 2038 2039 static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops, 2040 struct file *file, void *fh, void *arg) 2041 { 2042 struct v4l2_requestbuffers *p = arg; 2043 int ret = check_fmt(file, p->type); 2044 2045 if (ret) 2046 return ret; 2047 return ops->vidioc_reqbufs(file, fh, p); 2048 } 2049 2050 static int v4l_querybuf(const struct v4l2_ioctl_ops *ops, 2051 struct file *file, void *fh, void *arg) 2052 { 2053 struct v4l2_buffer *p = arg; 2054 int ret = check_fmt(file, p->type); 2055 2056 return ret ? ret : ops->vidioc_querybuf(file, fh, p); 2057 } 2058 2059 static int v4l_qbuf(const struct v4l2_ioctl_ops *ops, 2060 struct file *file, void *fh, void *arg) 2061 { 2062 struct v4l2_buffer *p = arg; 2063 int ret = check_fmt(file, p->type); 2064 2065 return ret ? ret : ops->vidioc_qbuf(file, fh, p); 2066 } 2067 2068 static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops, 2069 struct file *file, void *fh, void *arg) 2070 { 2071 struct v4l2_buffer *p = arg; 2072 int ret = check_fmt(file, p->type); 2073 2074 return ret ? ret : ops->vidioc_dqbuf(file, fh, p); 2075 } 2076 2077 static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops, 2078 struct file *file, void *fh, void *arg) 2079 { 2080 struct v4l2_create_buffers *create = arg; 2081 int ret = check_fmt(file, create->format.type); 2082 2083 if (ret) 2084 return ret; 2085 2086 CLEAR_AFTER_FIELD(create, flags); 2087 2088 v4l_sanitize_format(&create->format); 2089 2090 ret = ops->vidioc_create_bufs(file, fh, create); 2091 2092 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 2093 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT) 2094 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 2095 2096 return ret; 2097 } 2098 2099 static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops, 2100 struct file *file, void *fh, void *arg) 2101 { 2102 struct v4l2_buffer *b = arg; 2103 int ret = check_fmt(file, b->type); 2104 2105 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b); 2106 } 2107 2108 static int v4l_g_parm(const struct v4l2_ioctl_ops *ops, 2109 struct file *file, void *fh, void *arg) 2110 { 2111 struct v4l2_streamparm *p = arg; 2112 v4l2_std_id std; 2113 int ret = check_fmt(file, p->type); 2114 2115 if (ret) 2116 return ret; 2117 if (ops->vidioc_g_parm) 2118 return ops->vidioc_g_parm(file, fh, p); 2119 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && 2120 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2121 return -EINVAL; 2122 p->parm.capture.readbuffers = 2; 2123 ret = ops->vidioc_g_std(file, fh, &std); 2124 if (ret == 0) 2125 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe); 2126 return ret; 2127 } 2128 2129 static int v4l_s_parm(const struct v4l2_ioctl_ops *ops, 2130 struct file *file, void *fh, void *arg) 2131 { 2132 struct v4l2_streamparm *p = arg; 2133 int ret = check_fmt(file, p->type); 2134 2135 if (ret) 2136 return ret; 2137 2138 /* Note: extendedmode is never used in drivers */ 2139 if (V4L2_TYPE_IS_OUTPUT(p->type)) { 2140 memset(p->parm.output.reserved, 0, 2141 sizeof(p->parm.output.reserved)); 2142 p->parm.output.extendedmode = 0; 2143 p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY; 2144 } else { 2145 memset(p->parm.capture.reserved, 0, 2146 sizeof(p->parm.capture.reserved)); 2147 p->parm.capture.extendedmode = 0; 2148 p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY; 2149 } 2150 return ops->vidioc_s_parm(file, fh, p); 2151 } 2152 2153 static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops, 2154 struct file *file, void *fh, void *arg) 2155 { 2156 struct video_device *vfd = video_devdata(file); 2157 struct v4l2_queryctrl *p = arg; 2158 struct v4l2_fh *vfh = 2159 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2160 2161 if (vfh && vfh->ctrl_handler) 2162 return v4l2_queryctrl(vfh->ctrl_handler, p); 2163 if (vfd->ctrl_handler) 2164 return v4l2_queryctrl(vfd->ctrl_handler, p); 2165 if (ops->vidioc_queryctrl) 2166 return ops->vidioc_queryctrl(file, fh, p); 2167 return -ENOTTY; 2168 } 2169 2170 static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops, 2171 struct file *file, void *fh, void *arg) 2172 { 2173 struct video_device *vfd = video_devdata(file); 2174 struct v4l2_query_ext_ctrl *p = arg; 2175 struct v4l2_fh *vfh = 2176 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2177 2178 if (vfh && vfh->ctrl_handler) 2179 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p); 2180 if (vfd->ctrl_handler) 2181 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p); 2182 if (ops->vidioc_query_ext_ctrl) 2183 return ops->vidioc_query_ext_ctrl(file, fh, p); 2184 return -ENOTTY; 2185 } 2186 2187 static int v4l_querymenu(const struct v4l2_ioctl_ops *ops, 2188 struct file *file, void *fh, void *arg) 2189 { 2190 struct video_device *vfd = video_devdata(file); 2191 struct v4l2_querymenu *p = arg; 2192 struct v4l2_fh *vfh = 2193 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2194 2195 if (vfh && vfh->ctrl_handler) 2196 return v4l2_querymenu(vfh->ctrl_handler, p); 2197 if (vfd->ctrl_handler) 2198 return v4l2_querymenu(vfd->ctrl_handler, p); 2199 if (ops->vidioc_querymenu) 2200 return ops->vidioc_querymenu(file, fh, p); 2201 return -ENOTTY; 2202 } 2203 2204 static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops, 2205 struct file *file, void *fh, void *arg) 2206 { 2207 struct video_device *vfd = video_devdata(file); 2208 struct v4l2_control *p = arg; 2209 struct v4l2_fh *vfh = 2210 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2211 struct v4l2_ext_controls ctrls; 2212 struct v4l2_ext_control ctrl; 2213 2214 if (vfh && vfh->ctrl_handler) 2215 return v4l2_g_ctrl(vfh->ctrl_handler, p); 2216 if (vfd->ctrl_handler) 2217 return v4l2_g_ctrl(vfd->ctrl_handler, p); 2218 if (ops->vidioc_g_ctrl) 2219 return ops->vidioc_g_ctrl(file, fh, p); 2220 if (ops->vidioc_g_ext_ctrls == NULL) 2221 return -ENOTTY; 2222 2223 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2224 ctrls.count = 1; 2225 ctrls.controls = &ctrl; 2226 ctrl.id = p->id; 2227 ctrl.value = p->value; 2228 if (check_ext_ctrls(&ctrls, 1)) { 2229 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls); 2230 2231 if (ret == 0) 2232 p->value = ctrl.value; 2233 return ret; 2234 } 2235 return -EINVAL; 2236 } 2237 2238 static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, 2239 struct file *file, void *fh, void *arg) 2240 { 2241 struct video_device *vfd = video_devdata(file); 2242 struct v4l2_control *p = arg; 2243 struct v4l2_fh *vfh = 2244 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2245 struct v4l2_ext_controls ctrls; 2246 struct v4l2_ext_control ctrl; 2247 2248 if (vfh && vfh->ctrl_handler) 2249 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p); 2250 if (vfd->ctrl_handler) 2251 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p); 2252 if (ops->vidioc_s_ctrl) 2253 return ops->vidioc_s_ctrl(file, fh, p); 2254 if (ops->vidioc_s_ext_ctrls == NULL) 2255 return -ENOTTY; 2256 2257 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2258 ctrls.count = 1; 2259 ctrls.controls = &ctrl; 2260 ctrl.id = p->id; 2261 ctrl.value = p->value; 2262 if (check_ext_ctrls(&ctrls, 1)) 2263 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls); 2264 return -EINVAL; 2265 } 2266 2267 static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2268 struct file *file, void *fh, void *arg) 2269 { 2270 struct video_device *vfd = video_devdata(file); 2271 struct v4l2_ext_controls *p = arg; 2272 struct v4l2_fh *vfh = 2273 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2274 2275 p->error_idx = p->count; 2276 if (vfh && vfh->ctrl_handler) 2277 return v4l2_g_ext_ctrls(vfh->ctrl_handler, 2278 vfd, vfd->v4l2_dev->mdev, p); 2279 if (vfd->ctrl_handler) 2280 return v4l2_g_ext_ctrls(vfd->ctrl_handler, 2281 vfd, vfd->v4l2_dev->mdev, p); 2282 if (ops->vidioc_g_ext_ctrls == NULL) 2283 return -ENOTTY; 2284 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) : 2285 -EINVAL; 2286 } 2287 2288 static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2289 struct file *file, void *fh, void *arg) 2290 { 2291 struct video_device *vfd = video_devdata(file); 2292 struct v4l2_ext_controls *p = arg; 2293 struct v4l2_fh *vfh = 2294 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2295 2296 p->error_idx = p->count; 2297 if (vfh && vfh->ctrl_handler) 2298 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, 2299 vfd, vfd->v4l2_dev->mdev, p); 2300 if (vfd->ctrl_handler) 2301 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, 2302 vfd, vfd->v4l2_dev->mdev, p); 2303 if (ops->vidioc_s_ext_ctrls == NULL) 2304 return -ENOTTY; 2305 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) : 2306 -EINVAL; 2307 } 2308 2309 static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2310 struct file *file, void *fh, void *arg) 2311 { 2312 struct video_device *vfd = video_devdata(file); 2313 struct v4l2_ext_controls *p = arg; 2314 struct v4l2_fh *vfh = 2315 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2316 2317 p->error_idx = p->count; 2318 if (vfh && vfh->ctrl_handler) 2319 return v4l2_try_ext_ctrls(vfh->ctrl_handler, 2320 vfd, vfd->v4l2_dev->mdev, p); 2321 if (vfd->ctrl_handler) 2322 return v4l2_try_ext_ctrls(vfd->ctrl_handler, 2323 vfd, vfd->v4l2_dev->mdev, p); 2324 if (ops->vidioc_try_ext_ctrls == NULL) 2325 return -ENOTTY; 2326 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) : 2327 -EINVAL; 2328 } 2329 2330 /* 2331 * The selection API specified originally that the _MPLANE buffer types 2332 * shouldn't be used. The reasons for this are lost in the mists of time 2333 * (or just really crappy memories). Regardless, this is really annoying 2334 * for userspace. So to keep things simple we map _MPLANE buffer types 2335 * to their 'regular' counterparts before calling the driver. And we 2336 * restore it afterwards. This way applications can use either buffer 2337 * type and drivers don't need to check for both. 2338 */ 2339 static int v4l_g_selection(const struct v4l2_ioctl_ops *ops, 2340 struct file *file, void *fh, void *arg) 2341 { 2342 struct v4l2_selection *p = arg; 2343 u32 old_type = p->type; 2344 int ret; 2345 2346 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2347 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2348 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2349 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2350 ret = ops->vidioc_g_selection(file, fh, p); 2351 p->type = old_type; 2352 return ret; 2353 } 2354 2355 static int v4l_s_selection(const struct v4l2_ioctl_ops *ops, 2356 struct file *file, void *fh, void *arg) 2357 { 2358 struct v4l2_selection *p = arg; 2359 u32 old_type = p->type; 2360 int ret; 2361 2362 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2363 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2364 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2365 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2366 ret = ops->vidioc_s_selection(file, fh, p); 2367 p->type = old_type; 2368 return ret; 2369 } 2370 2371 static int v4l_g_crop(const struct v4l2_ioctl_ops *ops, 2372 struct file *file, void *fh, void *arg) 2373 { 2374 struct video_device *vfd = video_devdata(file); 2375 struct v4l2_crop *p = arg; 2376 struct v4l2_selection s = { 2377 .type = p->type, 2378 }; 2379 int ret; 2380 2381 /* simulate capture crop using selection api */ 2382 2383 /* crop means compose for output devices */ 2384 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2385 s.target = V4L2_SEL_TGT_COMPOSE; 2386 else 2387 s.target = V4L2_SEL_TGT_CROP; 2388 2389 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2390 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2391 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2392 2393 ret = v4l_g_selection(ops, file, fh, &s); 2394 2395 /* copying results to old structure on success */ 2396 if (!ret) 2397 p->c = s.r; 2398 return ret; 2399 } 2400 2401 static int v4l_s_crop(const struct v4l2_ioctl_ops *ops, 2402 struct file *file, void *fh, void *arg) 2403 { 2404 struct video_device *vfd = video_devdata(file); 2405 struct v4l2_crop *p = arg; 2406 struct v4l2_selection s = { 2407 .type = p->type, 2408 .r = p->c, 2409 }; 2410 2411 /* simulate capture crop using selection api */ 2412 2413 /* crop means compose for output devices */ 2414 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2415 s.target = V4L2_SEL_TGT_COMPOSE; 2416 else 2417 s.target = V4L2_SEL_TGT_CROP; 2418 2419 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2420 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2421 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2422 2423 return v4l_s_selection(ops, file, fh, &s); 2424 } 2425 2426 static int v4l_cropcap(const struct v4l2_ioctl_ops *ops, 2427 struct file *file, void *fh, void *arg) 2428 { 2429 struct video_device *vfd = video_devdata(file); 2430 struct v4l2_cropcap *p = arg; 2431 struct v4l2_selection s = { .type = p->type }; 2432 int ret = 0; 2433 2434 /* setting trivial pixelaspect */ 2435 p->pixelaspect.numerator = 1; 2436 p->pixelaspect.denominator = 1; 2437 2438 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2439 s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2440 else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2441 s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2442 2443 /* 2444 * The determine_valid_ioctls() call already should ensure 2445 * that this can never happen, but just in case... 2446 */ 2447 if (WARN_ON(!ops->vidioc_g_selection)) 2448 return -ENOTTY; 2449 2450 if (ops->vidioc_g_pixelaspect) 2451 ret = ops->vidioc_g_pixelaspect(file, fh, s.type, 2452 &p->pixelaspect); 2453 2454 /* 2455 * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the 2456 * square pixel aspect ratio in that case. 2457 */ 2458 if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD) 2459 return ret; 2460 2461 /* Use g_selection() to fill in the bounds and defrect rectangles */ 2462 2463 /* obtaining bounds */ 2464 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2465 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS; 2466 else 2467 s.target = V4L2_SEL_TGT_CROP_BOUNDS; 2468 2469 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2470 s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ? 2471 V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS; 2472 2473 ret = v4l_g_selection(ops, file, fh, &s); 2474 if (ret) 2475 return ret; 2476 p->bounds = s.r; 2477 2478 /* obtaining defrect */ 2479 if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS) 2480 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT; 2481 else 2482 s.target = V4L2_SEL_TGT_CROP_DEFAULT; 2483 2484 ret = v4l_g_selection(ops, file, fh, &s); 2485 if (ret) 2486 return ret; 2487 p->defrect = s.r; 2488 2489 return 0; 2490 } 2491 2492 static int v4l_log_status(const struct v4l2_ioctl_ops *ops, 2493 struct file *file, void *fh, void *arg) 2494 { 2495 struct video_device *vfd = video_devdata(file); 2496 int ret; 2497 2498 if (vfd->v4l2_dev) 2499 pr_info("%s: ================= START STATUS =================\n", 2500 vfd->v4l2_dev->name); 2501 ret = ops->vidioc_log_status(file, fh); 2502 if (vfd->v4l2_dev) 2503 pr_info("%s: ================== END STATUS ==================\n", 2504 vfd->v4l2_dev->name); 2505 return ret; 2506 } 2507 2508 static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops, 2509 struct file *file, void *fh, void *arg) 2510 { 2511 #ifdef CONFIG_VIDEO_ADV_DEBUG 2512 struct v4l2_dbg_register *p = arg; 2513 struct video_device *vfd = video_devdata(file); 2514 struct v4l2_subdev *sd; 2515 int idx = 0; 2516 2517 if (!capable(CAP_SYS_ADMIN)) 2518 return -EPERM; 2519 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2520 if (vfd->v4l2_dev == NULL) 2521 return -EINVAL; 2522 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2523 if (p->match.addr == idx++) 2524 return v4l2_subdev_call(sd, core, g_register, p); 2525 return -EINVAL; 2526 } 2527 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2528 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2529 return ops->vidioc_g_register(file, fh, p); 2530 return -EINVAL; 2531 #else 2532 return -ENOTTY; 2533 #endif 2534 } 2535 2536 static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops, 2537 struct file *file, void *fh, void *arg) 2538 { 2539 #ifdef CONFIG_VIDEO_ADV_DEBUG 2540 const struct v4l2_dbg_register *p = arg; 2541 struct video_device *vfd = video_devdata(file); 2542 struct v4l2_subdev *sd; 2543 int idx = 0; 2544 2545 if (!capable(CAP_SYS_ADMIN)) 2546 return -EPERM; 2547 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2548 if (vfd->v4l2_dev == NULL) 2549 return -EINVAL; 2550 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2551 if (p->match.addr == idx++) 2552 return v4l2_subdev_call(sd, core, s_register, p); 2553 return -EINVAL; 2554 } 2555 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2556 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2557 return ops->vidioc_s_register(file, fh, p); 2558 return -EINVAL; 2559 #else 2560 return -ENOTTY; 2561 #endif 2562 } 2563 2564 static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops, 2565 struct file *file, void *fh, void *arg) 2566 { 2567 #ifdef CONFIG_VIDEO_ADV_DEBUG 2568 struct video_device *vfd = video_devdata(file); 2569 struct v4l2_dbg_chip_info *p = arg; 2570 struct v4l2_subdev *sd; 2571 int idx = 0; 2572 2573 switch (p->match.type) { 2574 case V4L2_CHIP_MATCH_BRIDGE: 2575 if (ops->vidioc_s_register) 2576 p->flags |= V4L2_CHIP_FL_WRITABLE; 2577 if (ops->vidioc_g_register) 2578 p->flags |= V4L2_CHIP_FL_READABLE; 2579 strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name)); 2580 if (ops->vidioc_g_chip_info) 2581 return ops->vidioc_g_chip_info(file, fh, arg); 2582 if (p->match.addr) 2583 return -EINVAL; 2584 return 0; 2585 2586 case V4L2_CHIP_MATCH_SUBDEV: 2587 if (vfd->v4l2_dev == NULL) 2588 break; 2589 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) { 2590 if (p->match.addr != idx++) 2591 continue; 2592 if (sd->ops->core && sd->ops->core->s_register) 2593 p->flags |= V4L2_CHIP_FL_WRITABLE; 2594 if (sd->ops->core && sd->ops->core->g_register) 2595 p->flags |= V4L2_CHIP_FL_READABLE; 2596 strscpy(p->name, sd->name, sizeof(p->name)); 2597 return 0; 2598 } 2599 break; 2600 } 2601 return -EINVAL; 2602 #else 2603 return -ENOTTY; 2604 #endif 2605 } 2606 2607 static int v4l_dqevent(const struct v4l2_ioctl_ops *ops, 2608 struct file *file, void *fh, void *arg) 2609 { 2610 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK); 2611 } 2612 2613 static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops, 2614 struct file *file, void *fh, void *arg) 2615 { 2616 return ops->vidioc_subscribe_event(fh, arg); 2617 } 2618 2619 static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops, 2620 struct file *file, void *fh, void *arg) 2621 { 2622 return ops->vidioc_unsubscribe_event(fh, arg); 2623 } 2624 2625 static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops, 2626 struct file *file, void *fh, void *arg) 2627 { 2628 struct v4l2_sliced_vbi_cap *p = arg; 2629 int ret = check_fmt(file, p->type); 2630 2631 if (ret) 2632 return ret; 2633 2634 /* Clear up to type, everything after type is zeroed already */ 2635 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type)); 2636 2637 return ops->vidioc_g_sliced_vbi_cap(file, fh, p); 2638 } 2639 2640 static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops, 2641 struct file *file, void *fh, void *arg) 2642 { 2643 struct video_device *vfd = video_devdata(file); 2644 struct v4l2_frequency_band *p = arg; 2645 enum v4l2_tuner_type type; 2646 int err; 2647 2648 if (vfd->vfl_type == VFL_TYPE_SDR) { 2649 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 2650 return -EINVAL; 2651 type = p->type; 2652 } else { 2653 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2654 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2655 if (type != p->type) 2656 return -EINVAL; 2657 } 2658 if (ops->vidioc_enum_freq_bands) { 2659 err = ops->vidioc_enum_freq_bands(file, fh, p); 2660 if (err != -ENOTTY) 2661 return err; 2662 } 2663 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) { 2664 struct v4l2_tuner t = { 2665 .index = p->tuner, 2666 .type = type, 2667 }; 2668 2669 if (p->index) 2670 return -EINVAL; 2671 err = ops->vidioc_g_tuner(file, fh, &t); 2672 if (err) 2673 return err; 2674 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2675 p->rangelow = t.rangelow; 2676 p->rangehigh = t.rangehigh; 2677 p->modulation = (type == V4L2_TUNER_RADIO) ? 2678 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2679 return 0; 2680 } 2681 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) { 2682 struct v4l2_modulator m = { 2683 .index = p->tuner, 2684 }; 2685 2686 if (type != V4L2_TUNER_RADIO) 2687 return -EINVAL; 2688 if (p->index) 2689 return -EINVAL; 2690 err = ops->vidioc_g_modulator(file, fh, &m); 2691 if (err) 2692 return err; 2693 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2694 p->rangelow = m.rangelow; 2695 p->rangehigh = m.rangehigh; 2696 p->modulation = (type == V4L2_TUNER_RADIO) ? 2697 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2698 return 0; 2699 } 2700 return -ENOTTY; 2701 } 2702 2703 struct v4l2_ioctl_info { 2704 unsigned int ioctl; 2705 u32 flags; 2706 const char * const name; 2707 int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file, 2708 void *fh, void *p); 2709 void (*debug)(const void *arg, bool write_only); 2710 }; 2711 2712 /* This control needs a priority check */ 2713 #define INFO_FL_PRIO (1 << 0) 2714 /* This control can be valid if the filehandle passes a control handler. */ 2715 #define INFO_FL_CTRL (1 << 1) 2716 /* Queuing ioctl */ 2717 #define INFO_FL_QUEUE (1 << 2) 2718 /* Always copy back result, even on error */ 2719 #define INFO_FL_ALWAYS_COPY (1 << 3) 2720 /* Zero struct from after the field to the end */ 2721 #define INFO_FL_CLEAR(v4l2_struct, field) \ 2722 ((offsetof(struct v4l2_struct, field) + \ 2723 sizeof_field(struct v4l2_struct, field)) << 16) 2724 #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16) 2725 2726 #define DEFINE_V4L_STUB_FUNC(_vidioc) \ 2727 static int v4l_stub_ ## _vidioc( \ 2728 const struct v4l2_ioctl_ops *ops, \ 2729 struct file *file, void *fh, void *p) \ 2730 { \ 2731 return ops->vidioc_ ## _vidioc(file, fh, p); \ 2732 } 2733 2734 #define IOCTL_INFO(_ioctl, _func, _debug, _flags) \ 2735 [_IOC_NR(_ioctl)] = { \ 2736 .ioctl = _ioctl, \ 2737 .flags = _flags, \ 2738 .name = #_ioctl, \ 2739 .func = _func, \ 2740 .debug = _debug, \ 2741 } 2742 2743 DEFINE_V4L_STUB_FUNC(g_fbuf) 2744 DEFINE_V4L_STUB_FUNC(s_fbuf) 2745 DEFINE_V4L_STUB_FUNC(expbuf) 2746 DEFINE_V4L_STUB_FUNC(g_std) 2747 DEFINE_V4L_STUB_FUNC(g_audio) 2748 DEFINE_V4L_STUB_FUNC(s_audio) 2749 DEFINE_V4L_STUB_FUNC(g_edid) 2750 DEFINE_V4L_STUB_FUNC(s_edid) 2751 DEFINE_V4L_STUB_FUNC(g_audout) 2752 DEFINE_V4L_STUB_FUNC(s_audout) 2753 DEFINE_V4L_STUB_FUNC(g_jpegcomp) 2754 DEFINE_V4L_STUB_FUNC(s_jpegcomp) 2755 DEFINE_V4L_STUB_FUNC(enumaudio) 2756 DEFINE_V4L_STUB_FUNC(enumaudout) 2757 DEFINE_V4L_STUB_FUNC(enum_framesizes) 2758 DEFINE_V4L_STUB_FUNC(enum_frameintervals) 2759 DEFINE_V4L_STUB_FUNC(g_enc_index) 2760 DEFINE_V4L_STUB_FUNC(encoder_cmd) 2761 DEFINE_V4L_STUB_FUNC(try_encoder_cmd) 2762 DEFINE_V4L_STUB_FUNC(decoder_cmd) 2763 DEFINE_V4L_STUB_FUNC(try_decoder_cmd) 2764 DEFINE_V4L_STUB_FUNC(s_dv_timings) 2765 DEFINE_V4L_STUB_FUNC(g_dv_timings) 2766 DEFINE_V4L_STUB_FUNC(enum_dv_timings) 2767 DEFINE_V4L_STUB_FUNC(query_dv_timings) 2768 DEFINE_V4L_STUB_FUNC(dv_timings_cap) 2769 2770 static const struct v4l2_ioctl_info v4l2_ioctls[] = { 2771 IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0), 2772 IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, 0), 2773 IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0), 2774 IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO), 2775 IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2776 IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)), 2777 IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0), 2778 IOCTL_INFO(VIDIOC_S_FBUF, v4l_stub_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO), 2779 IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO), 2780 IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE), 2781 IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)), 2782 IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE), 2783 IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2784 IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2785 IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)), 2786 IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO), 2787 IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0), 2788 IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO), 2789 IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)), 2790 IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)), 2791 IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)), 2792 IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL), 2793 IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)), 2794 IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO), 2795 IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0), 2796 IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO), 2797 IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)), 2798 IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)), 2799 IOCTL_INFO(VIDIOC_G_INPUT, v4l_g_input, v4l_print_u32, 0), 2800 IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO), 2801 IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY), 2802 IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY), 2803 IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_g_output, v4l_print_u32, 0), 2804 IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO), 2805 IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)), 2806 IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0), 2807 IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO), 2808 IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)), 2809 IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO), 2810 IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)), 2811 IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO), 2812 IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)), 2813 IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)), 2814 IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO), 2815 IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)), 2816 IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)), 2817 IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0), 2818 IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO), 2819 IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0), 2820 IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0), 2821 IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)), 2822 IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)), 2823 IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0), 2824 IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO), 2825 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)), 2826 IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0), 2827 IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL), 2828 IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL), 2829 IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL), 2830 IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)), 2831 IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)), 2832 IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0), 2833 IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2834 IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2835 IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO), 2836 IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0), 2837 IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0), 2838 IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0), 2839 IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO), 2840 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)), 2841 IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0), 2842 IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0), 2843 IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0), 2844 IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0), 2845 IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2846 IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE), 2847 IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)), 2848 IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY), 2849 IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)), 2850 IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0), 2851 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)), 2852 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)), 2853 }; 2854 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) 2855 2856 static bool v4l2_is_known_ioctl(unsigned int cmd) 2857 { 2858 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2859 return false; 2860 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd; 2861 } 2862 2863 static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, 2864 struct v4l2_fh *vfh, unsigned int cmd, 2865 void *arg) 2866 { 2867 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2868 return vdev->lock; 2869 if (vfh && vfh->m2m_ctx && 2870 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) { 2871 if (vfh->m2m_ctx->q_lock) 2872 return vfh->m2m_ctx->q_lock; 2873 } 2874 if (vdev->queue && vdev->queue->lock && 2875 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) 2876 return vdev->queue->lock; 2877 return vdev->lock; 2878 } 2879 2880 /* Common ioctl debug function. This function can be used by 2881 external ioctl messages as well as internal V4L ioctl */ 2882 void v4l_printk_ioctl(const char *prefix, unsigned int cmd) 2883 { 2884 const char *dir, *type; 2885 2886 if (prefix) 2887 printk(KERN_DEBUG "%s: ", prefix); 2888 2889 switch (_IOC_TYPE(cmd)) { 2890 case 'd': 2891 type = "v4l2_int"; 2892 break; 2893 case 'V': 2894 if (_IOC_NR(cmd) >= V4L2_IOCTLS) { 2895 type = "v4l2"; 2896 break; 2897 } 2898 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name); 2899 return; 2900 default: 2901 type = "unknown"; 2902 break; 2903 } 2904 2905 switch (_IOC_DIR(cmd)) { 2906 case _IOC_NONE: dir = "--"; break; 2907 case _IOC_READ: dir = "r-"; break; 2908 case _IOC_WRITE: dir = "-w"; break; 2909 case _IOC_READ | _IOC_WRITE: dir = "rw"; break; 2910 default: dir = "*ERR*"; break; 2911 } 2912 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)", 2913 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd); 2914 } 2915 EXPORT_SYMBOL(v4l_printk_ioctl); 2916 2917 static long __video_do_ioctl(struct file *file, 2918 unsigned int cmd, void *arg) 2919 { 2920 struct video_device *vfd = video_devdata(file); 2921 struct mutex *req_queue_lock = NULL; 2922 struct mutex *lock; /* ioctl serialization mutex */ 2923 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 2924 bool write_only = false; 2925 struct v4l2_ioctl_info default_info; 2926 const struct v4l2_ioctl_info *info; 2927 void *fh = file->private_data; 2928 struct v4l2_fh *vfh = NULL; 2929 int dev_debug = vfd->dev_debug; 2930 long ret = -ENOTTY; 2931 2932 if (ops == NULL) { 2933 pr_warn("%s: has no ioctl_ops.\n", 2934 video_device_node_name(vfd)); 2935 return ret; 2936 } 2937 2938 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 2939 vfh = file->private_data; 2940 2941 /* 2942 * We need to serialize streamon/off with queueing new requests. 2943 * These ioctls may trigger the cancellation of a streaming 2944 * operation, and that should not be mixed with queueing a new 2945 * request at the same time. 2946 */ 2947 if (v4l2_device_supports_requests(vfd->v4l2_dev) && 2948 (cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF)) { 2949 req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex; 2950 2951 if (mutex_lock_interruptible(req_queue_lock)) 2952 return -ERESTARTSYS; 2953 } 2954 2955 lock = v4l2_ioctl_get_lock(vfd, vfh, cmd, arg); 2956 2957 if (lock && mutex_lock_interruptible(lock)) { 2958 if (req_queue_lock) 2959 mutex_unlock(req_queue_lock); 2960 return -ERESTARTSYS; 2961 } 2962 2963 if (!video_is_registered(vfd)) { 2964 ret = -ENODEV; 2965 goto unlock; 2966 } 2967 2968 if (v4l2_is_known_ioctl(cmd)) { 2969 info = &v4l2_ioctls[_IOC_NR(cmd)]; 2970 2971 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) && 2972 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler)) 2973 goto done; 2974 2975 if (vfh && (info->flags & INFO_FL_PRIO)) { 2976 ret = v4l2_prio_check(vfd->prio, vfh->prio); 2977 if (ret) 2978 goto done; 2979 } 2980 } else { 2981 default_info.ioctl = cmd; 2982 default_info.flags = 0; 2983 default_info.debug = v4l_print_default; 2984 info = &default_info; 2985 } 2986 2987 write_only = _IOC_DIR(cmd) == _IOC_WRITE; 2988 if (info != &default_info) { 2989 ret = info->func(ops, file, fh, arg); 2990 } else if (!ops->vidioc_default) { 2991 ret = -ENOTTY; 2992 } else { 2993 ret = ops->vidioc_default(file, fh, 2994 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0, 2995 cmd, arg); 2996 } 2997 2998 done: 2999 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) { 3000 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) && 3001 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF)) 3002 goto unlock; 3003 3004 v4l_printk_ioctl(video_device_node_name(vfd), cmd); 3005 if (ret < 0) 3006 pr_cont(": error %ld", ret); 3007 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG)) 3008 pr_cont("\n"); 3009 else if (_IOC_DIR(cmd) == _IOC_NONE) 3010 info->debug(arg, write_only); 3011 else { 3012 pr_cont(": "); 3013 info->debug(arg, write_only); 3014 } 3015 } 3016 3017 unlock: 3018 if (lock) 3019 mutex_unlock(lock); 3020 if (req_queue_lock) 3021 mutex_unlock(req_queue_lock); 3022 return ret; 3023 } 3024 3025 static int check_array_args(unsigned int cmd, void *parg, size_t *array_size, 3026 void __user **user_ptr, void ***kernel_ptr) 3027 { 3028 int ret = 0; 3029 3030 switch (cmd) { 3031 case VIDIOC_PREPARE_BUF: 3032 case VIDIOC_QUERYBUF: 3033 case VIDIOC_QBUF: 3034 case VIDIOC_DQBUF: { 3035 struct v4l2_buffer *buf = parg; 3036 3037 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) { 3038 if (buf->length > VIDEO_MAX_PLANES) { 3039 ret = -EINVAL; 3040 break; 3041 } 3042 *user_ptr = (void __user *)buf->m.planes; 3043 *kernel_ptr = (void **)&buf->m.planes; 3044 *array_size = sizeof(struct v4l2_plane) * buf->length; 3045 ret = 1; 3046 } 3047 break; 3048 } 3049 3050 case VIDIOC_G_EDID: 3051 case VIDIOC_S_EDID: { 3052 struct v4l2_edid *edid = parg; 3053 3054 if (edid->blocks) { 3055 if (edid->blocks > 256) { 3056 ret = -EINVAL; 3057 break; 3058 } 3059 *user_ptr = (void __user *)edid->edid; 3060 *kernel_ptr = (void **)&edid->edid; 3061 *array_size = edid->blocks * 128; 3062 ret = 1; 3063 } 3064 break; 3065 } 3066 3067 case VIDIOC_S_EXT_CTRLS: 3068 case VIDIOC_G_EXT_CTRLS: 3069 case VIDIOC_TRY_EXT_CTRLS: { 3070 struct v4l2_ext_controls *ctrls = parg; 3071 3072 if (ctrls->count != 0) { 3073 if (ctrls->count > V4L2_CID_MAX_CTRLS) { 3074 ret = -EINVAL; 3075 break; 3076 } 3077 *user_ptr = (void __user *)ctrls->controls; 3078 *kernel_ptr = (void **)&ctrls->controls; 3079 *array_size = sizeof(struct v4l2_ext_control) 3080 * ctrls->count; 3081 ret = 1; 3082 } 3083 break; 3084 } 3085 } 3086 3087 return ret; 3088 } 3089 3090 static unsigned int video_translate_cmd(unsigned int cmd) 3091 { 3092 switch (cmd) { 3093 #ifdef CONFIG_COMPAT_32BIT_TIME 3094 case VIDIOC_DQEVENT_TIME32: 3095 return VIDIOC_DQEVENT; 3096 case VIDIOC_QUERYBUF_TIME32: 3097 return VIDIOC_QUERYBUF; 3098 case VIDIOC_QBUF_TIME32: 3099 return VIDIOC_QBUF; 3100 case VIDIOC_DQBUF_TIME32: 3101 return VIDIOC_DQBUF; 3102 case VIDIOC_PREPARE_BUF_TIME32: 3103 return VIDIOC_PREPARE_BUF; 3104 #endif 3105 } 3106 3107 return cmd; 3108 } 3109 3110 static int video_get_user(void __user *arg, void *parg, unsigned int cmd, 3111 bool *always_copy) 3112 { 3113 unsigned int n = _IOC_SIZE(cmd); 3114 3115 if (!(_IOC_DIR(cmd) & _IOC_WRITE)) { 3116 /* read-only ioctl */ 3117 memset(parg, 0, n); 3118 return 0; 3119 } 3120 3121 switch (cmd) { 3122 #ifdef CONFIG_COMPAT_32BIT_TIME 3123 case VIDIOC_QUERYBUF_TIME32: 3124 case VIDIOC_QBUF_TIME32: 3125 case VIDIOC_DQBUF_TIME32: 3126 case VIDIOC_PREPARE_BUF_TIME32: { 3127 struct v4l2_buffer_time32 vb32; 3128 struct v4l2_buffer *vb = parg; 3129 3130 if (copy_from_user(&vb32, arg, sizeof(vb32))) 3131 return -EFAULT; 3132 3133 *vb = (struct v4l2_buffer) { 3134 .index = vb32.index, 3135 .type = vb32.type, 3136 .bytesused = vb32.bytesused, 3137 .flags = vb32.flags, 3138 .field = vb32.field, 3139 .timestamp.tv_sec = vb32.timestamp.tv_sec, 3140 .timestamp.tv_usec = vb32.timestamp.tv_usec, 3141 .timecode = vb32.timecode, 3142 .sequence = vb32.sequence, 3143 .memory = vb32.memory, 3144 .m.userptr = vb32.m.userptr, 3145 .length = vb32.length, 3146 .request_fd = vb32.request_fd, 3147 }; 3148 3149 if (cmd == VIDIOC_QUERYBUF_TIME32) 3150 vb->request_fd = 0; 3151 3152 break; 3153 } 3154 #endif 3155 default: 3156 /* 3157 * In some cases, only a few fields are used as input, 3158 * i.e. when the app sets "index" and then the driver 3159 * fills in the rest of the structure for the thing 3160 * with that index. We only need to copy up the first 3161 * non-input field. 3162 */ 3163 if (v4l2_is_known_ioctl(cmd)) { 3164 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags; 3165 3166 if (flags & INFO_FL_CLEAR_MASK) 3167 n = (flags & INFO_FL_CLEAR_MASK) >> 16; 3168 *always_copy = flags & INFO_FL_ALWAYS_COPY; 3169 } 3170 3171 if (copy_from_user(parg, (void __user *)arg, n)) 3172 return -EFAULT; 3173 3174 /* zero out anything we don't copy from userspace */ 3175 if (n < _IOC_SIZE(cmd)) 3176 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n); 3177 break; 3178 } 3179 3180 return 0; 3181 } 3182 3183 static int video_put_user(void __user *arg, void *parg, unsigned int cmd) 3184 { 3185 if (!(_IOC_DIR(cmd) & _IOC_READ)) 3186 return 0; 3187 3188 switch (cmd) { 3189 #ifdef CONFIG_COMPAT_32BIT_TIME 3190 case VIDIOC_DQEVENT_TIME32: { 3191 struct v4l2_event *ev = parg; 3192 struct v4l2_event_time32 ev32 = { 3193 .type = ev->type, 3194 .pending = ev->pending, 3195 .sequence = ev->sequence, 3196 .timestamp.tv_sec = ev->timestamp.tv_sec, 3197 .timestamp.tv_nsec = ev->timestamp.tv_nsec, 3198 .id = ev->id, 3199 }; 3200 3201 memcpy(&ev32.u, &ev->u, sizeof(ev->u)); 3202 memcpy(&ev32.reserved, &ev->reserved, sizeof(ev->reserved)); 3203 3204 if (copy_to_user(arg, &ev32, sizeof(ev32))) 3205 return -EFAULT; 3206 break; 3207 } 3208 case VIDIOC_QUERYBUF_TIME32: 3209 case VIDIOC_QBUF_TIME32: 3210 case VIDIOC_DQBUF_TIME32: 3211 case VIDIOC_PREPARE_BUF_TIME32: { 3212 struct v4l2_buffer *vb = parg; 3213 struct v4l2_buffer_time32 vb32 = { 3214 .index = vb->index, 3215 .type = vb->type, 3216 .bytesused = vb->bytesused, 3217 .flags = vb->flags, 3218 .field = vb->field, 3219 .timestamp.tv_sec = vb->timestamp.tv_sec, 3220 .timestamp.tv_usec = vb->timestamp.tv_usec, 3221 .timecode = vb->timecode, 3222 .sequence = vb->sequence, 3223 .memory = vb->memory, 3224 .m.userptr = vb->m.userptr, 3225 .length = vb->length, 3226 .request_fd = vb->request_fd, 3227 }; 3228 3229 if (copy_to_user(arg, &vb32, sizeof(vb32))) 3230 return -EFAULT; 3231 break; 3232 } 3233 #endif 3234 default: 3235 /* Copy results into user buffer */ 3236 if (copy_to_user(arg, parg, _IOC_SIZE(cmd))) 3237 return -EFAULT; 3238 break; 3239 } 3240 3241 return 0; 3242 } 3243 3244 long 3245 video_usercopy(struct file *file, unsigned int orig_cmd, unsigned long arg, 3246 v4l2_kioctl func) 3247 { 3248 char sbuf[128]; 3249 void *mbuf = NULL; 3250 void *parg = (void *)arg; 3251 long err = -EINVAL; 3252 bool has_array_args; 3253 bool always_copy = false; 3254 size_t array_size = 0; 3255 void __user *user_ptr = NULL; 3256 void **kernel_ptr = NULL; 3257 unsigned int cmd = video_translate_cmd(orig_cmd); 3258 const size_t ioc_size = _IOC_SIZE(cmd); 3259 3260 /* Copy arguments into temp kernel buffer */ 3261 if (_IOC_DIR(cmd) != _IOC_NONE) { 3262 if (ioc_size <= sizeof(sbuf)) { 3263 parg = sbuf; 3264 } else { 3265 /* too big to allocate from stack */ 3266 mbuf = kvmalloc(ioc_size, GFP_KERNEL); 3267 if (NULL == mbuf) 3268 return -ENOMEM; 3269 parg = mbuf; 3270 } 3271 3272 err = video_get_user((void __user *)arg, parg, orig_cmd, 3273 &always_copy); 3274 if (err) 3275 goto out; 3276 } 3277 3278 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr); 3279 if (err < 0) 3280 goto out; 3281 has_array_args = err; 3282 3283 if (has_array_args) { 3284 /* 3285 * When adding new types of array args, make sure that the 3286 * parent argument to ioctl (which contains the pointer to the 3287 * array) fits into sbuf (so that mbuf will still remain 3288 * unused up to here). 3289 */ 3290 mbuf = kvmalloc(array_size, GFP_KERNEL); 3291 err = -ENOMEM; 3292 if (NULL == mbuf) 3293 goto out_array_args; 3294 err = -EFAULT; 3295 if (copy_from_user(mbuf, user_ptr, array_size)) 3296 goto out_array_args; 3297 *kernel_ptr = mbuf; 3298 } 3299 3300 /* Handles IOCTL */ 3301 err = func(file, cmd, parg); 3302 if (err == -ENOTTY || err == -ENOIOCTLCMD) { 3303 err = -ENOTTY; 3304 goto out; 3305 } 3306 3307 if (err == 0) { 3308 if (cmd == VIDIOC_DQBUF) 3309 trace_v4l2_dqbuf(video_devdata(file)->minor, parg); 3310 else if (cmd == VIDIOC_QBUF) 3311 trace_v4l2_qbuf(video_devdata(file)->minor, parg); 3312 } 3313 3314 if (has_array_args) { 3315 *kernel_ptr = (void __force *)user_ptr; 3316 if (copy_to_user(user_ptr, mbuf, array_size)) 3317 err = -EFAULT; 3318 goto out_array_args; 3319 } 3320 /* 3321 * Some ioctls can return an error, but still have valid 3322 * results that must be returned. 3323 */ 3324 if (err < 0 && !always_copy) 3325 goto out; 3326 3327 out_array_args: 3328 if (video_put_user((void __user *)arg, parg, orig_cmd)) 3329 err = -EFAULT; 3330 out: 3331 kvfree(mbuf); 3332 return err; 3333 } 3334 3335 long video_ioctl2(struct file *file, 3336 unsigned int cmd, unsigned long arg) 3337 { 3338 return video_usercopy(file, cmd, arg, __video_do_ioctl); 3339 } 3340 EXPORT_SYMBOL(video_ioctl2); 3341