1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Video capture interface for Linux version 2 4 * 5 * A generic framework to process V4L2 ioctl commands. 6 * 7 * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1) 8 * Mauro Carvalho Chehab <mchehab@kernel.org> (version 2) 9 */ 10 11 #include <linux/compat.h> 12 #include <linux/mm.h> 13 #include <linux/module.h> 14 #include <linux/slab.h> 15 #include <linux/types.h> 16 #include <linux/kernel.h> 17 #include <linux/version.h> 18 19 #include <linux/v4l2-subdev.h> 20 #include <linux/videodev2.h> 21 22 #include <media/media-device.h> /* for media_set_bus_info() */ 23 #include <media/v4l2-common.h> 24 #include <media/v4l2-ioctl.h> 25 #include <media/v4l2-ctrls.h> 26 #include <media/v4l2-fh.h> 27 #include <media/v4l2-event.h> 28 #include <media/v4l2-device.h> 29 #include <media/videobuf2-v4l2.h> 30 #include <media/v4l2-mc.h> 31 #include <media/v4l2-mem2mem.h> 32 33 #include <trace/events/v4l2.h> 34 35 #define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls) 36 37 struct std_descr { 38 v4l2_std_id std; 39 const char *descr; 40 }; 41 42 static const struct std_descr standards[] = { 43 { V4L2_STD_NTSC, "NTSC" }, 44 { V4L2_STD_NTSC_M, "NTSC-M" }, 45 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" }, 46 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" }, 47 { V4L2_STD_NTSC_443, "NTSC-443" }, 48 { V4L2_STD_PAL, "PAL" }, 49 { V4L2_STD_PAL_BG, "PAL-BG" }, 50 { V4L2_STD_PAL_B, "PAL-B" }, 51 { V4L2_STD_PAL_B1, "PAL-B1" }, 52 { V4L2_STD_PAL_G, "PAL-G" }, 53 { V4L2_STD_PAL_H, "PAL-H" }, 54 { V4L2_STD_PAL_I, "PAL-I" }, 55 { V4L2_STD_PAL_DK, "PAL-DK" }, 56 { V4L2_STD_PAL_D, "PAL-D" }, 57 { V4L2_STD_PAL_D1, "PAL-D1" }, 58 { V4L2_STD_PAL_K, "PAL-K" }, 59 { V4L2_STD_PAL_M, "PAL-M" }, 60 { V4L2_STD_PAL_N, "PAL-N" }, 61 { V4L2_STD_PAL_Nc, "PAL-Nc" }, 62 { V4L2_STD_PAL_60, "PAL-60" }, 63 { V4L2_STD_SECAM, "SECAM" }, 64 { V4L2_STD_SECAM_B, "SECAM-B" }, 65 { V4L2_STD_SECAM_G, "SECAM-G" }, 66 { V4L2_STD_SECAM_H, "SECAM-H" }, 67 { V4L2_STD_SECAM_DK, "SECAM-DK" }, 68 { V4L2_STD_SECAM_D, "SECAM-D" }, 69 { V4L2_STD_SECAM_K, "SECAM-K" }, 70 { V4L2_STD_SECAM_K1, "SECAM-K1" }, 71 { V4L2_STD_SECAM_L, "SECAM-L" }, 72 { V4L2_STD_SECAM_LC, "SECAM-Lc" }, 73 { 0, "Unknown" } 74 }; 75 76 /* video4linux standard ID conversion to standard name 77 */ 78 const char *v4l2_norm_to_name(v4l2_std_id id) 79 { 80 u32 myid = id; 81 int i; 82 83 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle 84 64 bit comparisons. So, on that architecture, with some gcc 85 variants, compilation fails. Currently, the max value is 30bit wide. 86 */ 87 BUG_ON(myid != id); 88 89 for (i = 0; standards[i].std; i++) 90 if (myid == standards[i].std) 91 break; 92 return standards[i].descr; 93 } 94 EXPORT_SYMBOL(v4l2_norm_to_name); 95 96 /* Returns frame period for the given standard */ 97 void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod) 98 { 99 if (id & V4L2_STD_525_60) { 100 frameperiod->numerator = 1001; 101 frameperiod->denominator = 30000; 102 } else { 103 frameperiod->numerator = 1; 104 frameperiod->denominator = 25; 105 } 106 } 107 EXPORT_SYMBOL(v4l2_video_std_frame_period); 108 109 /* Fill in the fields of a v4l2_standard structure according to the 110 'id' and 'transmission' parameters. Returns negative on error. */ 111 int v4l2_video_std_construct(struct v4l2_standard *vs, 112 int id, const char *name) 113 { 114 vs->id = id; 115 v4l2_video_std_frame_period(id, &vs->frameperiod); 116 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625; 117 strscpy(vs->name, name, sizeof(vs->name)); 118 return 0; 119 } 120 EXPORT_SYMBOL(v4l2_video_std_construct); 121 122 /* Fill in the fields of a v4l2_standard structure according to the 123 * 'id' and 'vs->index' parameters. Returns negative on error. */ 124 int v4l_video_std_enumstd(struct v4l2_standard *vs, v4l2_std_id id) 125 { 126 v4l2_std_id curr_id = 0; 127 unsigned int index = vs->index, i, j = 0; 128 const char *descr = ""; 129 130 /* Return -ENODATA if the id for the current input 131 or output is 0, meaning that it doesn't support this API. */ 132 if (id == 0) 133 return -ENODATA; 134 135 /* Return norm array in a canonical way */ 136 for (i = 0; i <= index && id; i++) { 137 /* last std value in the standards array is 0, so this 138 while always ends there since (id & 0) == 0. */ 139 while ((id & standards[j].std) != standards[j].std) 140 j++; 141 curr_id = standards[j].std; 142 descr = standards[j].descr; 143 j++; 144 if (curr_id == 0) 145 break; 146 if (curr_id != V4L2_STD_PAL && 147 curr_id != V4L2_STD_SECAM && 148 curr_id != V4L2_STD_NTSC) 149 id &= ~curr_id; 150 } 151 if (i <= index) 152 return -EINVAL; 153 154 v4l2_video_std_construct(vs, curr_id, descr); 155 return 0; 156 } 157 158 /* ----------------------------------------------------------------- */ 159 /* some arrays for pretty-printing debug messages of enum types */ 160 161 const char *v4l2_field_names[] = { 162 [V4L2_FIELD_ANY] = "any", 163 [V4L2_FIELD_NONE] = "none", 164 [V4L2_FIELD_TOP] = "top", 165 [V4L2_FIELD_BOTTOM] = "bottom", 166 [V4L2_FIELD_INTERLACED] = "interlaced", 167 [V4L2_FIELD_SEQ_TB] = "seq-tb", 168 [V4L2_FIELD_SEQ_BT] = "seq-bt", 169 [V4L2_FIELD_ALTERNATE] = "alternate", 170 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb", 171 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt", 172 }; 173 EXPORT_SYMBOL(v4l2_field_names); 174 175 const char *v4l2_type_names[] = { 176 [0] = "0", 177 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap", 178 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay", 179 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out", 180 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap", 181 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out", 182 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap", 183 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out", 184 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay", 185 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane", 186 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane", 187 [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap", 188 [V4L2_BUF_TYPE_SDR_OUTPUT] = "sdr-out", 189 [V4L2_BUF_TYPE_META_CAPTURE] = "meta-cap", 190 [V4L2_BUF_TYPE_META_OUTPUT] = "meta-out", 191 }; 192 EXPORT_SYMBOL(v4l2_type_names); 193 194 static const char *v4l2_memory_names[] = { 195 [V4L2_MEMORY_MMAP] = "mmap", 196 [V4L2_MEMORY_USERPTR] = "userptr", 197 [V4L2_MEMORY_OVERLAY] = "overlay", 198 [V4L2_MEMORY_DMABUF] = "dmabuf", 199 }; 200 201 #define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown") 202 203 /* ------------------------------------------------------------------ */ 204 /* debug help functions */ 205 206 static void v4l_print_querycap(const void *arg, bool write_only) 207 { 208 const struct v4l2_capability *p = arg; 209 210 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, capabilities=0x%08x, device_caps=0x%08x\n", 211 (int)sizeof(p->driver), p->driver, 212 (int)sizeof(p->card), p->card, 213 (int)sizeof(p->bus_info), p->bus_info, 214 p->version, p->capabilities, p->device_caps); 215 } 216 217 static void v4l_print_enuminput(const void *arg, bool write_only) 218 { 219 const struct v4l2_input *p = arg; 220 221 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, std=0x%08Lx, status=0x%x, capabilities=0x%x\n", 222 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, 223 p->tuner, (unsigned long long)p->std, p->status, 224 p->capabilities); 225 } 226 227 static void v4l_print_enumoutput(const void *arg, bool write_only) 228 { 229 const struct v4l2_output *p = arg; 230 231 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, modulator=%u, std=0x%08Lx, capabilities=0x%x\n", 232 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, 233 p->modulator, (unsigned long long)p->std, p->capabilities); 234 } 235 236 static void v4l_print_audio(const void *arg, bool write_only) 237 { 238 const struct v4l2_audio *p = arg; 239 240 if (write_only) 241 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode); 242 else 243 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", 244 p->index, (int)sizeof(p->name), p->name, 245 p->capability, p->mode); 246 } 247 248 static void v4l_print_audioout(const void *arg, bool write_only) 249 { 250 const struct v4l2_audioout *p = arg; 251 252 if (write_only) 253 pr_cont("index=%u\n", p->index); 254 else 255 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", 256 p->index, (int)sizeof(p->name), p->name, 257 p->capability, p->mode); 258 } 259 260 static void v4l_print_fmtdesc(const void *arg, bool write_only) 261 { 262 const struct v4l2_fmtdesc *p = arg; 263 264 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%p4cc, mbus_code=0x%04x, description='%.*s'\n", 265 p->index, prt_names(p->type, v4l2_type_names), 266 p->flags, &p->pixelformat, p->mbus_code, 267 (int)sizeof(p->description), p->description); 268 } 269 270 static void v4l_print_format(const void *arg, bool write_only) 271 { 272 const struct v4l2_format *p = arg; 273 const struct v4l2_pix_format *pix; 274 const struct v4l2_pix_format_mplane *mp; 275 const struct v4l2_vbi_format *vbi; 276 const struct v4l2_sliced_vbi_format *sliced; 277 const struct v4l2_window *win; 278 const struct v4l2_meta_format *meta; 279 u32 pixelformat; 280 u32 planes; 281 unsigned i; 282 283 pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); 284 switch (p->type) { 285 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 286 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 287 pix = &p->fmt.pix; 288 pr_cont(", width=%u, height=%u, pixelformat=%p4cc, field=%s, bytesperline=%u, sizeimage=%u, colorspace=%d, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n", 289 pix->width, pix->height, &pix->pixelformat, 290 prt_names(pix->field, v4l2_field_names), 291 pix->bytesperline, pix->sizeimage, 292 pix->colorspace, pix->flags, pix->ycbcr_enc, 293 pix->quantization, pix->xfer_func); 294 break; 295 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 296 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 297 mp = &p->fmt.pix_mp; 298 pixelformat = mp->pixelformat; 299 pr_cont(", width=%u, height=%u, format=%p4cc, field=%s, colorspace=%d, num_planes=%u, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n", 300 mp->width, mp->height, &pixelformat, 301 prt_names(mp->field, v4l2_field_names), 302 mp->colorspace, mp->num_planes, mp->flags, 303 mp->ycbcr_enc, mp->quantization, mp->xfer_func); 304 planes = min_t(u32, mp->num_planes, VIDEO_MAX_PLANES); 305 for (i = 0; i < planes; i++) 306 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i, 307 mp->plane_fmt[i].bytesperline, 308 mp->plane_fmt[i].sizeimage); 309 break; 310 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 311 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 312 win = &p->fmt.win; 313 pr_cont(", wxh=%dx%d, x,y=%d,%d, field=%s, chromakey=0x%08x, global_alpha=0x%02x\n", 314 win->w.width, win->w.height, win->w.left, win->w.top, 315 prt_names(win->field, v4l2_field_names), 316 win->chromakey, win->global_alpha); 317 break; 318 case V4L2_BUF_TYPE_VBI_CAPTURE: 319 case V4L2_BUF_TYPE_VBI_OUTPUT: 320 vbi = &p->fmt.vbi; 321 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%p4cc, start=%u,%u, count=%u,%u\n", 322 vbi->sampling_rate, vbi->offset, 323 vbi->samples_per_line, &vbi->sample_format, 324 vbi->start[0], vbi->start[1], 325 vbi->count[0], vbi->count[1]); 326 break; 327 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 328 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 329 sliced = &p->fmt.sliced; 330 pr_cont(", service_set=0x%08x, io_size=%d\n", 331 sliced->service_set, sliced->io_size); 332 for (i = 0; i < 24; i++) 333 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, 334 sliced->service_lines[0][i], 335 sliced->service_lines[1][i]); 336 break; 337 case V4L2_BUF_TYPE_SDR_CAPTURE: 338 case V4L2_BUF_TYPE_SDR_OUTPUT: 339 pixelformat = p->fmt.sdr.pixelformat; 340 pr_cont(", pixelformat=%p4cc\n", &pixelformat); 341 break; 342 case V4L2_BUF_TYPE_META_CAPTURE: 343 case V4L2_BUF_TYPE_META_OUTPUT: 344 meta = &p->fmt.meta; 345 pixelformat = meta->dataformat; 346 pr_cont(", dataformat=%p4cc, buffersize=%u, width=%u, height=%u, bytesperline=%u\n", 347 &pixelformat, meta->buffersize, meta->width, 348 meta->height, meta->bytesperline); 349 break; 350 } 351 } 352 353 static void v4l_print_framebuffer(const void *arg, bool write_only) 354 { 355 const struct v4l2_framebuffer *p = arg; 356 357 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, height=%u, pixelformat=%p4cc, bytesperline=%u, sizeimage=%u, colorspace=%d\n", 358 p->capability, p->flags, p->base, p->fmt.width, p->fmt.height, 359 &p->fmt.pixelformat, p->fmt.bytesperline, p->fmt.sizeimage, 360 p->fmt.colorspace); 361 } 362 363 static void v4l_print_buftype(const void *arg, bool write_only) 364 { 365 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names)); 366 } 367 368 static void v4l_print_modulator(const void *arg, bool write_only) 369 { 370 const struct v4l2_modulator *p = arg; 371 372 if (write_only) 373 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans); 374 else 375 pr_cont("index=%u, name=%.*s, capability=0x%x, rangelow=%u, rangehigh=%u, txsubchans=0x%x\n", 376 p->index, (int)sizeof(p->name), p->name, p->capability, 377 p->rangelow, p->rangehigh, p->txsubchans); 378 } 379 380 static void v4l_print_tuner(const void *arg, bool write_only) 381 { 382 const struct v4l2_tuner *p = arg; 383 384 if (write_only) 385 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode); 386 else 387 pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, rangelow=%u, rangehigh=%u, signal=%u, afc=%d, rxsubchans=0x%x, audmode=%u\n", 388 p->index, (int)sizeof(p->name), p->name, p->type, 389 p->capability, p->rangelow, 390 p->rangehigh, p->signal, p->afc, 391 p->rxsubchans, p->audmode); 392 } 393 394 static void v4l_print_frequency(const void *arg, bool write_only) 395 { 396 const struct v4l2_frequency *p = arg; 397 398 pr_cont("tuner=%u, type=%u, frequency=%u\n", 399 p->tuner, p->type, p->frequency); 400 } 401 402 static void v4l_print_standard(const void *arg, bool write_only) 403 { 404 const struct v4l2_standard *p = arg; 405 406 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, framelines=%u\n", 407 p->index, 408 (unsigned long long)p->id, (int)sizeof(p->name), p->name, 409 p->frameperiod.numerator, 410 p->frameperiod.denominator, 411 p->framelines); 412 } 413 414 static void v4l_print_std(const void *arg, bool write_only) 415 { 416 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg); 417 } 418 419 static void v4l_print_hw_freq_seek(const void *arg, bool write_only) 420 { 421 const struct v4l2_hw_freq_seek *p = arg; 422 423 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, rangelow=%u, rangehigh=%u\n", 424 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing, 425 p->rangelow, p->rangehigh); 426 } 427 428 static void v4l_print_requestbuffers(const void *arg, bool write_only) 429 { 430 const struct v4l2_requestbuffers *p = arg; 431 432 pr_cont("count=%d, type=%s, memory=%s\n", 433 p->count, 434 prt_names(p->type, v4l2_type_names), 435 prt_names(p->memory, v4l2_memory_names)); 436 } 437 438 static void v4l_print_buffer(const void *arg, bool write_only) 439 { 440 const struct v4l2_buffer *p = arg; 441 const struct v4l2_timecode *tc = &p->timecode; 442 const struct v4l2_plane *plane; 443 int i; 444 445 pr_cont("%02d:%02d:%02d.%06ld index=%d, type=%s, request_fd=%d, flags=0x%08x, field=%s, sequence=%d, memory=%s", 446 (int)p->timestamp.tv_sec / 3600, 447 ((int)p->timestamp.tv_sec / 60) % 60, 448 ((int)p->timestamp.tv_sec % 60), 449 (long)p->timestamp.tv_usec, 450 p->index, 451 prt_names(p->type, v4l2_type_names), p->request_fd, 452 p->flags, prt_names(p->field, v4l2_field_names), 453 p->sequence, prt_names(p->memory, v4l2_memory_names)); 454 455 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) { 456 pr_cont("\n"); 457 for (i = 0; i < p->length; ++i) { 458 plane = &p->m.planes[i]; 459 printk(KERN_DEBUG 460 "plane %d: bytesused=%d, data_offset=0x%08x, offset/userptr=0x%lx, length=%d\n", 461 i, plane->bytesused, plane->data_offset, 462 plane->m.userptr, plane->length); 463 } 464 } else { 465 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n", 466 p->bytesused, p->m.userptr, p->length); 467 } 468 469 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, flags=0x%08x, frames=%d, userbits=0x%08x\n", 470 tc->hours, tc->minutes, tc->seconds, 471 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits); 472 } 473 474 static void v4l_print_exportbuffer(const void *arg, bool write_only) 475 { 476 const struct v4l2_exportbuffer *p = arg; 477 478 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n", 479 p->fd, prt_names(p->type, v4l2_type_names), 480 p->index, p->plane, p->flags); 481 } 482 483 static void v4l_print_create_buffers(const void *arg, bool write_only) 484 { 485 const struct v4l2_create_buffers *p = arg; 486 487 pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, max num buffers=%u, ", 488 p->index, p->count, prt_names(p->memory, v4l2_memory_names), 489 p->capabilities, p->max_num_buffers); 490 v4l_print_format(&p->format, write_only); 491 } 492 493 static void v4l_print_remove_buffers(const void *arg, bool write_only) 494 { 495 const struct v4l2_remove_buffers *p = arg; 496 497 pr_cont("type=%s, index=%u, count=%u\n", 498 prt_names(p->type, v4l2_type_names), p->index, p->count); 499 } 500 501 static void v4l_print_streamparm(const void *arg, bool write_only) 502 { 503 const struct v4l2_streamparm *p = arg; 504 505 pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); 506 507 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 508 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) { 509 const struct v4l2_captureparm *c = &p->parm.capture; 510 511 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, extendedmode=%d, readbuffers=%d\n", 512 c->capability, c->capturemode, 513 c->timeperframe.numerator, c->timeperframe.denominator, 514 c->extendedmode, c->readbuffers); 515 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT || 516 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { 517 const struct v4l2_outputparm *c = &p->parm.output; 518 519 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, extendedmode=%d, writebuffers=%d\n", 520 c->capability, c->outputmode, 521 c->timeperframe.numerator, c->timeperframe.denominator, 522 c->extendedmode, c->writebuffers); 523 } else { 524 pr_cont("\n"); 525 } 526 } 527 528 static void v4l_print_queryctrl(const void *arg, bool write_only) 529 { 530 const struct v4l2_queryctrl *p = arg; 531 532 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, step=%d, default=%d, flags=0x%08x\n", 533 p->id, p->type, (int)sizeof(p->name), p->name, 534 p->minimum, p->maximum, 535 p->step, p->default_value, p->flags); 536 } 537 538 static void v4l_print_query_ext_ctrl(const void *arg, bool write_only) 539 { 540 const struct v4l2_query_ext_ctrl *p = arg; 541 542 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%lld/%lld, step=%lld, default=%lld, flags=0x%08x, elem_size=%u, elems=%u, nr_of_dims=%u, dims=%u,%u,%u,%u\n", 543 p->id, p->type, (int)sizeof(p->name), p->name, 544 p->minimum, p->maximum, 545 p->step, p->default_value, p->flags, 546 p->elem_size, p->elems, p->nr_of_dims, 547 p->dims[0], p->dims[1], p->dims[2], p->dims[3]); 548 } 549 550 static void v4l_print_querymenu(const void *arg, bool write_only) 551 { 552 const struct v4l2_querymenu *p = arg; 553 554 pr_cont("id=0x%x, index=%d\n", p->id, p->index); 555 } 556 557 static void v4l_print_control(const void *arg, bool write_only) 558 { 559 const struct v4l2_control *p = arg; 560 const char *name = v4l2_ctrl_get_name(p->id); 561 562 if (name) 563 pr_cont("name=%s, ", name); 564 pr_cont("id=0x%x, value=%d\n", p->id, p->value); 565 } 566 567 static void v4l_print_ext_controls(const void *arg, bool write_only) 568 { 569 const struct v4l2_ext_controls *p = arg; 570 int i; 571 572 pr_cont("which=0x%x, count=%d, error_idx=%d, request_fd=%d", 573 p->which, p->count, p->error_idx, p->request_fd); 574 for (i = 0; i < p->count; i++) { 575 unsigned int id = p->controls[i].id; 576 const char *name = v4l2_ctrl_get_name(id); 577 578 if (name) 579 pr_cont(", name=%s", name); 580 if (!p->controls[i].size) 581 pr_cont(", id/val=0x%x/0x%x", id, p->controls[i].value); 582 else 583 pr_cont(", id/size=0x%x/%u", id, p->controls[i].size); 584 } 585 pr_cont("\n"); 586 } 587 588 static void v4l_print_cropcap(const void *arg, bool write_only) 589 { 590 const struct v4l2_cropcap *p = arg; 591 592 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, defrect wxh=%dx%d, x,y=%d,%d, pixelaspect %d/%d\n", 593 prt_names(p->type, v4l2_type_names), 594 p->bounds.width, p->bounds.height, 595 p->bounds.left, p->bounds.top, 596 p->defrect.width, p->defrect.height, 597 p->defrect.left, p->defrect.top, 598 p->pixelaspect.numerator, p->pixelaspect.denominator); 599 } 600 601 static void v4l_print_crop(const void *arg, bool write_only) 602 { 603 const struct v4l2_crop *p = arg; 604 605 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n", 606 prt_names(p->type, v4l2_type_names), 607 p->c.width, p->c.height, 608 p->c.left, p->c.top); 609 } 610 611 static void v4l_print_selection(const void *arg, bool write_only) 612 { 613 const struct v4l2_selection *p = arg; 614 615 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n", 616 prt_names(p->type, v4l2_type_names), 617 p->target, p->flags, 618 p->r.width, p->r.height, p->r.left, p->r.top); 619 } 620 621 static void v4l_print_jpegcompression(const void *arg, bool write_only) 622 { 623 const struct v4l2_jpegcompression *p = arg; 624 625 pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n", 626 p->quality, p->APPn, p->APP_len, 627 p->COM_len, p->jpeg_markers); 628 } 629 630 static void v4l_print_enc_idx(const void *arg, bool write_only) 631 { 632 const struct v4l2_enc_idx *p = arg; 633 634 pr_cont("entries=%d, entries_cap=%d\n", 635 p->entries, p->entries_cap); 636 } 637 638 static void v4l_print_encoder_cmd(const void *arg, bool write_only) 639 { 640 const struct v4l2_encoder_cmd *p = arg; 641 642 pr_cont("cmd=%d, flags=0x%x\n", 643 p->cmd, p->flags); 644 } 645 646 static void v4l_print_decoder_cmd(const void *arg, bool write_only) 647 { 648 const struct v4l2_decoder_cmd *p = arg; 649 650 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags); 651 652 if (p->cmd == V4L2_DEC_CMD_START) 653 pr_info("speed=%d, format=%u\n", 654 p->start.speed, p->start.format); 655 else if (p->cmd == V4L2_DEC_CMD_STOP) 656 pr_info("pts=%llu\n", p->stop.pts); 657 } 658 659 static void v4l_print_dbg_chip_info(const void *arg, bool write_only) 660 { 661 const struct v4l2_dbg_chip_info *p = arg; 662 663 pr_cont("type=%u, ", p->match.type); 664 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 665 pr_cont("name=%.*s, ", 666 (int)sizeof(p->match.name), p->match.name); 667 else 668 pr_cont("addr=%u, ", p->match.addr); 669 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name); 670 } 671 672 static void v4l_print_dbg_register(const void *arg, bool write_only) 673 { 674 const struct v4l2_dbg_register *p = arg; 675 676 pr_cont("type=%u, ", p->match.type); 677 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 678 pr_cont("name=%.*s, ", 679 (int)sizeof(p->match.name), p->match.name); 680 else 681 pr_cont("addr=%u, ", p->match.addr); 682 pr_cont("reg=0x%llx, val=0x%llx\n", 683 p->reg, p->val); 684 } 685 686 static void v4l_print_dv_timings(const void *arg, bool write_only) 687 { 688 const struct v4l2_dv_timings *p = arg; 689 690 switch (p->type) { 691 case V4L2_DV_BT_656_1120: 692 pr_cont("type=bt-656/1120, interlaced=%u, pixelclock=%llu, width=%u, height=%u, polarities=0x%x, hfrontporch=%u, hsync=%u, hbackporch=%u, vfrontporch=%u, vsync=%u, vbackporch=%u, il_vfrontporch=%u, il_vsync=%u, il_vbackporch=%u, standards=0x%x, flags=0x%x\n", 693 p->bt.interlaced, p->bt.pixelclock, 694 p->bt.width, p->bt.height, 695 p->bt.polarities, p->bt.hfrontporch, 696 p->bt.hsync, p->bt.hbackporch, 697 p->bt.vfrontporch, p->bt.vsync, 698 p->bt.vbackporch, p->bt.il_vfrontporch, 699 p->bt.il_vsync, p->bt.il_vbackporch, 700 p->bt.standards, p->bt.flags); 701 break; 702 default: 703 pr_cont("type=%d\n", p->type); 704 break; 705 } 706 } 707 708 static void v4l_print_enum_dv_timings(const void *arg, bool write_only) 709 { 710 const struct v4l2_enum_dv_timings *p = arg; 711 712 pr_cont("index=%u, ", p->index); 713 v4l_print_dv_timings(&p->timings, write_only); 714 } 715 716 static void v4l_print_dv_timings_cap(const void *arg, bool write_only) 717 { 718 const struct v4l2_dv_timings_cap *p = arg; 719 720 switch (p->type) { 721 case V4L2_DV_BT_656_1120: 722 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n", 723 p->bt.min_width, p->bt.max_width, 724 p->bt.min_height, p->bt.max_height, 725 p->bt.min_pixelclock, p->bt.max_pixelclock, 726 p->bt.standards, p->bt.capabilities); 727 break; 728 default: 729 pr_cont("type=%u\n", p->type); 730 break; 731 } 732 } 733 734 static void v4l_print_frmsizeenum(const void *arg, bool write_only) 735 { 736 const struct v4l2_frmsizeenum *p = arg; 737 738 pr_cont("index=%u, pixelformat=%p4cc, type=%u", 739 p->index, &p->pixel_format, p->type); 740 switch (p->type) { 741 case V4L2_FRMSIZE_TYPE_DISCRETE: 742 pr_cont(", wxh=%ux%u\n", 743 p->discrete.width, p->discrete.height); 744 break; 745 case V4L2_FRMSIZE_TYPE_STEPWISE: 746 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n", 747 p->stepwise.min_width, 748 p->stepwise.min_height, 749 p->stepwise.max_width, 750 p->stepwise.max_height, 751 p->stepwise.step_width, 752 p->stepwise.step_height); 753 break; 754 case V4L2_FRMSIZE_TYPE_CONTINUOUS: 755 default: 756 pr_cont("\n"); 757 break; 758 } 759 } 760 761 static void v4l_print_frmivalenum(const void *arg, bool write_only) 762 { 763 const struct v4l2_frmivalenum *p = arg; 764 765 pr_cont("index=%u, pixelformat=%p4cc, wxh=%ux%u, type=%u", 766 p->index, &p->pixel_format, p->width, p->height, p->type); 767 switch (p->type) { 768 case V4L2_FRMIVAL_TYPE_DISCRETE: 769 pr_cont(", fps=%d/%d\n", 770 p->discrete.numerator, 771 p->discrete.denominator); 772 break; 773 case V4L2_FRMIVAL_TYPE_STEPWISE: 774 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n", 775 p->stepwise.min.numerator, 776 p->stepwise.min.denominator, 777 p->stepwise.max.numerator, 778 p->stepwise.max.denominator, 779 p->stepwise.step.numerator, 780 p->stepwise.step.denominator); 781 break; 782 case V4L2_FRMIVAL_TYPE_CONTINUOUS: 783 default: 784 pr_cont("\n"); 785 break; 786 } 787 } 788 789 static void v4l_print_event(const void *arg, bool write_only) 790 { 791 const struct v4l2_event *p = arg; 792 const struct v4l2_event_ctrl *c; 793 794 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%llu.%9.9llu\n", 795 p->type, p->pending, p->sequence, p->id, 796 p->timestamp.tv_sec, p->timestamp.tv_nsec); 797 switch (p->type) { 798 case V4L2_EVENT_VSYNC: 799 printk(KERN_DEBUG "field=%s\n", 800 prt_names(p->u.vsync.field, v4l2_field_names)); 801 break; 802 case V4L2_EVENT_CTRL: 803 c = &p->u.ctrl; 804 printk(KERN_DEBUG "changes=0x%x, type=%u, ", 805 c->changes, c->type); 806 if (c->type == V4L2_CTRL_TYPE_INTEGER64) 807 pr_cont("value64=%lld, ", c->value64); 808 else 809 pr_cont("value=%d, ", c->value); 810 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n", 811 c->flags, c->minimum, c->maximum, 812 c->step, c->default_value); 813 break; 814 case V4L2_EVENT_FRAME_SYNC: 815 pr_cont("frame_sequence=%u\n", 816 p->u.frame_sync.frame_sequence); 817 break; 818 } 819 } 820 821 static void v4l_print_event_subscription(const void *arg, bool write_only) 822 { 823 const struct v4l2_event_subscription *p = arg; 824 825 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n", 826 p->type, p->id, p->flags); 827 } 828 829 static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only) 830 { 831 const struct v4l2_sliced_vbi_cap *p = arg; 832 int i; 833 834 pr_cont("type=%s, service_set=0x%08x\n", 835 prt_names(p->type, v4l2_type_names), p->service_set); 836 for (i = 0; i < 24; i++) 837 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, 838 p->service_lines[0][i], 839 p->service_lines[1][i]); 840 } 841 842 static void v4l_print_freq_band(const void *arg, bool write_only) 843 { 844 const struct v4l2_frequency_band *p = arg; 845 846 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n", 847 p->tuner, p->type, p->index, 848 p->capability, p->rangelow, 849 p->rangehigh, p->modulation); 850 } 851 852 static void v4l_print_edid(const void *arg, bool write_only) 853 { 854 const struct v4l2_edid *p = arg; 855 856 pr_cont("pad=%u, start_block=%u, blocks=%u\n", 857 p->pad, p->start_block, p->blocks); 858 } 859 860 static void v4l_print_u32(const void *arg, bool write_only) 861 { 862 pr_cont("value=%u\n", *(const u32 *)arg); 863 } 864 865 static void v4l_print_newline(const void *arg, bool write_only) 866 { 867 pr_cont("\n"); 868 } 869 870 static void v4l_print_default(const void *arg, bool write_only) 871 { 872 pr_cont("driver-specific ioctl\n"); 873 } 874 875 static bool check_ext_ctrls(struct v4l2_ext_controls *c, unsigned long ioctl) 876 { 877 __u32 i; 878 879 /* zero the reserved fields */ 880 c->reserved[0] = 0; 881 for (i = 0; i < c->count; i++) 882 c->controls[i].reserved2[0] = 0; 883 884 switch (c->which) { 885 case V4L2_CID_PRIVATE_BASE: 886 /* 887 * V4L2_CID_PRIVATE_BASE cannot be used as control class 888 * when using extended controls. 889 * Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL 890 * is it allowed for backwards compatibility. 891 */ 892 if (ioctl == VIDIOC_G_CTRL || ioctl == VIDIOC_S_CTRL) 893 return false; 894 break; 895 case V4L2_CTRL_WHICH_DEF_VAL: 896 /* Default value cannot be changed */ 897 if (ioctl == VIDIOC_S_EXT_CTRLS || 898 ioctl == VIDIOC_TRY_EXT_CTRLS) { 899 c->error_idx = c->count; 900 return false; 901 } 902 return true; 903 case V4L2_CTRL_WHICH_CUR_VAL: 904 return true; 905 case V4L2_CTRL_WHICH_REQUEST_VAL: 906 c->error_idx = c->count; 907 return false; 908 } 909 910 /* Check that all controls are from the same control class. */ 911 for (i = 0; i < c->count; i++) { 912 if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) { 913 c->error_idx = ioctl == VIDIOC_TRY_EXT_CTRLS ? i : 914 c->count; 915 return false; 916 } 917 } 918 return true; 919 } 920 921 static int check_fmt(struct file *file, enum v4l2_buf_type type) 922 { 923 const u32 vid_caps = V4L2_CAP_VIDEO_CAPTURE | 924 V4L2_CAP_VIDEO_CAPTURE_MPLANE | 925 V4L2_CAP_VIDEO_OUTPUT | 926 V4L2_CAP_VIDEO_OUTPUT_MPLANE | 927 V4L2_CAP_VIDEO_M2M | V4L2_CAP_VIDEO_M2M_MPLANE; 928 const u32 meta_caps = V4L2_CAP_META_CAPTURE | 929 V4L2_CAP_META_OUTPUT; 930 struct video_device *vfd = video_devdata(file); 931 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 932 bool is_vid = vfd->vfl_type == VFL_TYPE_VIDEO && 933 (vfd->device_caps & vid_caps); 934 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI; 935 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; 936 bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; 937 bool is_meta = vfd->vfl_type == VFL_TYPE_VIDEO && 938 (vfd->device_caps & meta_caps); 939 bool is_rx = vfd->vfl_dir != VFL_DIR_TX; 940 bool is_tx = vfd->vfl_dir != VFL_DIR_RX; 941 942 if (ops == NULL) 943 return -EINVAL; 944 945 switch (type) { 946 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 947 if ((is_vid || is_tch) && is_rx && 948 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane)) 949 return 0; 950 break; 951 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 952 if ((is_vid || is_tch) && is_rx && ops->vidioc_g_fmt_vid_cap_mplane) 953 return 0; 954 break; 955 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 956 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay) 957 return 0; 958 break; 959 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 960 if (is_vid && is_tx && 961 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane)) 962 return 0; 963 break; 964 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 965 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane) 966 return 0; 967 break; 968 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 969 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay) 970 return 0; 971 break; 972 case V4L2_BUF_TYPE_VBI_CAPTURE: 973 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap) 974 return 0; 975 break; 976 case V4L2_BUF_TYPE_VBI_OUTPUT: 977 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out) 978 return 0; 979 break; 980 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 981 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap) 982 return 0; 983 break; 984 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 985 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out) 986 return 0; 987 break; 988 case V4L2_BUF_TYPE_SDR_CAPTURE: 989 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap) 990 return 0; 991 break; 992 case V4L2_BUF_TYPE_SDR_OUTPUT: 993 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out) 994 return 0; 995 break; 996 case V4L2_BUF_TYPE_META_CAPTURE: 997 if (is_meta && is_rx && ops->vidioc_g_fmt_meta_cap) 998 return 0; 999 break; 1000 case V4L2_BUF_TYPE_META_OUTPUT: 1001 if (is_meta && is_tx && ops->vidioc_g_fmt_meta_out) 1002 return 0; 1003 break; 1004 default: 1005 break; 1006 } 1007 return -EINVAL; 1008 } 1009 1010 static void v4l_sanitize_colorspace(u32 pixelformat, u32 *colorspace, 1011 u32 *encoding, u32 *quantization, 1012 u32 *xfer_func) 1013 { 1014 bool is_hsv = pixelformat == V4L2_PIX_FMT_HSV24 || 1015 pixelformat == V4L2_PIX_FMT_HSV32; 1016 1017 if (!v4l2_is_colorspace_valid(*colorspace)) { 1018 *colorspace = V4L2_COLORSPACE_DEFAULT; 1019 *encoding = V4L2_YCBCR_ENC_DEFAULT; 1020 *quantization = V4L2_QUANTIZATION_DEFAULT; 1021 *xfer_func = V4L2_XFER_FUNC_DEFAULT; 1022 } 1023 1024 if ((!is_hsv && !v4l2_is_ycbcr_enc_valid(*encoding)) || 1025 (is_hsv && !v4l2_is_hsv_enc_valid(*encoding))) 1026 *encoding = V4L2_YCBCR_ENC_DEFAULT; 1027 1028 if (!v4l2_is_quant_valid(*quantization)) 1029 *quantization = V4L2_QUANTIZATION_DEFAULT; 1030 1031 if (!v4l2_is_xfer_func_valid(*xfer_func)) 1032 *xfer_func = V4L2_XFER_FUNC_DEFAULT; 1033 } 1034 1035 static void v4l_sanitize_format(struct v4l2_format *fmt) 1036 { 1037 unsigned int offset; 1038 1039 /* Make sure num_planes is not bogus */ 1040 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE || 1041 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 1042 fmt->fmt.pix_mp.num_planes = min_t(u32, fmt->fmt.pix_mp.num_planes, 1043 VIDEO_MAX_PLANES); 1044 1045 /* 1046 * The v4l2_pix_format structure has been extended with fields that were 1047 * not previously required to be set to zero by applications. The priv 1048 * field, when set to a magic value, indicates that the extended fields 1049 * are valid. Otherwise they will contain undefined values. To simplify 1050 * the API towards drivers zero the extended fields and set the priv 1051 * field to the magic value when the extended pixel format structure 1052 * isn't used by applications. 1053 */ 1054 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 1055 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { 1056 if (fmt->fmt.pix.priv != V4L2_PIX_FMT_PRIV_MAGIC) { 1057 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1058 1059 offset = offsetof(struct v4l2_pix_format, priv) 1060 + sizeof(fmt->fmt.pix.priv); 1061 memset(((void *)&fmt->fmt.pix) + offset, 0, 1062 sizeof(fmt->fmt.pix) - offset); 1063 } 1064 } 1065 1066 /* Replace invalid colorspace values with defaults. */ 1067 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 1068 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { 1069 v4l_sanitize_colorspace(fmt->fmt.pix.pixelformat, 1070 &fmt->fmt.pix.colorspace, 1071 &fmt->fmt.pix.ycbcr_enc, 1072 &fmt->fmt.pix.quantization, 1073 &fmt->fmt.pix.xfer_func); 1074 } else if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE || 1075 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { 1076 u32 ycbcr_enc = fmt->fmt.pix_mp.ycbcr_enc; 1077 u32 quantization = fmt->fmt.pix_mp.quantization; 1078 u32 xfer_func = fmt->fmt.pix_mp.xfer_func; 1079 1080 v4l_sanitize_colorspace(fmt->fmt.pix_mp.pixelformat, 1081 &fmt->fmt.pix_mp.colorspace, &ycbcr_enc, 1082 &quantization, &xfer_func); 1083 1084 fmt->fmt.pix_mp.ycbcr_enc = ycbcr_enc; 1085 fmt->fmt.pix_mp.quantization = quantization; 1086 fmt->fmt.pix_mp.xfer_func = xfer_func; 1087 } 1088 } 1089 1090 static int v4l_querycap(const struct v4l2_ioctl_ops *ops, 1091 struct file *file, void *fh, void *arg) 1092 { 1093 struct v4l2_capability *cap = (struct v4l2_capability *)arg; 1094 struct video_device *vfd = video_devdata(file); 1095 int ret; 1096 1097 cap->version = LINUX_VERSION_CODE; 1098 cap->device_caps = vfd->device_caps; 1099 cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS; 1100 1101 media_set_bus_info(cap->bus_info, sizeof(cap->bus_info), 1102 vfd->dev_parent); 1103 1104 ret = ops->vidioc_querycap(file, fh, cap); 1105 1106 /* 1107 * Drivers must not change device_caps, so check for this and 1108 * warn if this happened. 1109 */ 1110 WARN_ON(cap->device_caps != vfd->device_caps); 1111 /* 1112 * Check that capabilities is a superset of 1113 * vfd->device_caps | V4L2_CAP_DEVICE_CAPS 1114 */ 1115 WARN_ON((cap->capabilities & 1116 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)) != 1117 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)); 1118 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT; 1119 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT; 1120 1121 return ret; 1122 } 1123 1124 static int v4l_g_input(const struct v4l2_ioctl_ops *ops, 1125 struct file *file, void *fh, void *arg) 1126 { 1127 struct video_device *vfd = video_devdata(file); 1128 1129 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1130 *(int *)arg = 0; 1131 return 0; 1132 } 1133 1134 return ops->vidioc_g_input(file, fh, arg); 1135 } 1136 1137 static int v4l_g_output(const struct v4l2_ioctl_ops *ops, 1138 struct file *file, void *fh, void *arg) 1139 { 1140 struct video_device *vfd = video_devdata(file); 1141 1142 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1143 *(int *)arg = 0; 1144 return 0; 1145 } 1146 1147 return ops->vidioc_g_output(file, fh, arg); 1148 } 1149 1150 static int v4l_s_input(const struct v4l2_ioctl_ops *ops, 1151 struct file *file, void *fh, void *arg) 1152 { 1153 struct video_device *vfd = video_devdata(file); 1154 int ret; 1155 1156 ret = v4l_enable_media_source(vfd); 1157 if (ret) 1158 return ret; 1159 1160 if (vfd->device_caps & V4L2_CAP_IO_MC) 1161 return *(int *)arg ? -EINVAL : 0; 1162 1163 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg); 1164 } 1165 1166 static int v4l_s_output(const struct v4l2_ioctl_ops *ops, 1167 struct file *file, void *fh, void *arg) 1168 { 1169 struct video_device *vfd = video_devdata(file); 1170 1171 if (vfd->device_caps & V4L2_CAP_IO_MC) 1172 return *(int *)arg ? -EINVAL : 0; 1173 1174 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg); 1175 } 1176 1177 static int v4l_g_priority(const struct v4l2_ioctl_ops *ops, 1178 struct file *file, void *fh, void *arg) 1179 { 1180 struct video_device *vfd; 1181 u32 *p = arg; 1182 1183 vfd = video_devdata(file); 1184 *p = v4l2_prio_max(vfd->prio); 1185 return 0; 1186 } 1187 1188 static int v4l_s_priority(const struct v4l2_ioctl_ops *ops, 1189 struct file *file, void *fh, void *arg) 1190 { 1191 struct video_device *vfd; 1192 struct v4l2_fh *vfh; 1193 u32 *p = arg; 1194 1195 vfd = video_devdata(file); 1196 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 1197 return -ENOTTY; 1198 vfh = file->private_data; 1199 return v4l2_prio_change(vfd->prio, &vfh->prio, *p); 1200 } 1201 1202 static int v4l_enuminput(const struct v4l2_ioctl_ops *ops, 1203 struct file *file, void *fh, void *arg) 1204 { 1205 struct video_device *vfd = video_devdata(file); 1206 struct v4l2_input *p = arg; 1207 1208 /* 1209 * We set the flags for CAP_DV_TIMINGS & 1210 * CAP_STD here based on ioctl handler provided by the 1211 * driver. If the driver doesn't support these 1212 * for a specific input, it must override these flags. 1213 */ 1214 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1215 p->capabilities |= V4L2_IN_CAP_STD; 1216 1217 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1218 if (p->index) 1219 return -EINVAL; 1220 strscpy(p->name, vfd->name, sizeof(p->name)); 1221 p->type = V4L2_INPUT_TYPE_CAMERA; 1222 return 0; 1223 } 1224 1225 return ops->vidioc_enum_input(file, fh, p); 1226 } 1227 1228 static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops, 1229 struct file *file, void *fh, void *arg) 1230 { 1231 struct video_device *vfd = video_devdata(file); 1232 struct v4l2_output *p = arg; 1233 1234 /* 1235 * We set the flags for CAP_DV_TIMINGS & 1236 * CAP_STD here based on ioctl handler provided by the 1237 * driver. If the driver doesn't support these 1238 * for a specific output, it must override these flags. 1239 */ 1240 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1241 p->capabilities |= V4L2_OUT_CAP_STD; 1242 1243 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1244 if (p->index) 1245 return -EINVAL; 1246 strscpy(p->name, vfd->name, sizeof(p->name)); 1247 p->type = V4L2_OUTPUT_TYPE_ANALOG; 1248 return 0; 1249 } 1250 1251 return ops->vidioc_enum_output(file, fh, p); 1252 } 1253 1254 static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) 1255 { 1256 const unsigned sz = sizeof(fmt->description); 1257 const char *descr = NULL; 1258 u32 flags = 0; 1259 1260 /* 1261 * We depart from the normal coding style here since the descriptions 1262 * should be aligned so it is easy to see which descriptions will be 1263 * longer than 31 characters (the max length for a description). 1264 * And frankly, this is easier to read anyway. 1265 * 1266 * Note that gcc will use O(log N) comparisons to find the right case. 1267 */ 1268 switch (fmt->pixelformat) { 1269 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1270 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break; 1271 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break; 1272 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break; 1273 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break; 1274 case V4L2_PIX_FMT_RGBA444: descr = "16-bit RGBA 4-4-4-4"; break; 1275 case V4L2_PIX_FMT_RGBX444: descr = "16-bit RGBX 4-4-4-4"; break; 1276 case V4L2_PIX_FMT_ABGR444: descr = "16-bit ABGR 4-4-4-4"; break; 1277 case V4L2_PIX_FMT_XBGR444: descr = "16-bit XBGR 4-4-4-4"; break; 1278 case V4L2_PIX_FMT_BGRA444: descr = "16-bit BGRA 4-4-4-4"; break; 1279 case V4L2_PIX_FMT_BGRX444: descr = "16-bit BGRX 4-4-4-4"; break; 1280 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break; 1281 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break; 1282 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break; 1283 case V4L2_PIX_FMT_ABGR555: descr = "16-bit ABGR 1-5-5-5"; break; 1284 case V4L2_PIX_FMT_XBGR555: descr = "16-bit XBGR 1-5-5-5"; break; 1285 case V4L2_PIX_FMT_RGBA555: descr = "16-bit RGBA 5-5-5-1"; break; 1286 case V4L2_PIX_FMT_RGBX555: descr = "16-bit RGBX 5-5-5-1"; break; 1287 case V4L2_PIX_FMT_BGRA555: descr = "16-bit BGRA 5-5-5-1"; break; 1288 case V4L2_PIX_FMT_BGRX555: descr = "16-bit BGRX 5-5-5-1"; break; 1289 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break; 1290 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break; 1291 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break; 1292 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break; 1293 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break; 1294 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break; 1295 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break; 1296 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break; 1297 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break; 1298 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break; 1299 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break; 1300 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break; 1301 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break; 1302 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break; 1303 case V4L2_PIX_FMT_BGRA32: descr = "32-bit ABGR 8-8-8-8"; break; 1304 case V4L2_PIX_FMT_BGRX32: descr = "32-bit XBGR 8-8-8-8"; break; 1305 case V4L2_PIX_FMT_RGBA32: descr = "32-bit RGBA 8-8-8-8"; break; 1306 case V4L2_PIX_FMT_RGBX32: descr = "32-bit RGBX 8-8-8-8"; break; 1307 case V4L2_PIX_FMT_RGBX1010102: descr = "32-bit RGBX 10-10-10-2"; break; 1308 case V4L2_PIX_FMT_RGBA1010102: descr = "32-bit RGBA 10-10-10-2"; break; 1309 case V4L2_PIX_FMT_ARGB2101010: descr = "32-bit ARGB 2-10-10-10"; break; 1310 case V4L2_PIX_FMT_BGR48: descr = "48-bit BGR 16-16-16"; break; 1311 case V4L2_PIX_FMT_RGB48: descr = "48-bit RGB 16-16-16"; break; 1312 case V4L2_PIX_FMT_BGR48_12: descr = "12-bit Depth BGR"; break; 1313 case V4L2_PIX_FMT_ABGR64_12: descr = "12-bit Depth BGRA"; break; 1314 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break; 1315 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break; 1316 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break; 1317 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break; 1318 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break; 1319 case V4L2_PIX_FMT_Y012: descr = "12-bit Greyscale (bits 15-4)"; break; 1320 case V4L2_PIX_FMT_Y14: descr = "14-bit Greyscale"; break; 1321 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break; 1322 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break; 1323 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break; 1324 case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break; 1325 case V4L2_PIX_FMT_IPU3_Y10: descr = "10-bit greyscale (IPU3 Packed)"; break; 1326 case V4L2_PIX_FMT_Y12P: descr = "12-bit Greyscale (MIPI Packed)"; break; 1327 case V4L2_PIX_FMT_Y14P: descr = "14-bit Greyscale (MIPI Packed)"; break; 1328 case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break; 1329 case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break; 1330 case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break; 1331 case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break; 1332 case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break; 1333 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break; 1334 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break; 1335 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break; 1336 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break; 1337 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break; 1338 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break; 1339 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break; 1340 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break; 1341 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break; 1342 case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break; 1343 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break; 1344 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break; 1345 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break; 1346 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break; 1347 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break; 1348 case V4L2_PIX_FMT_YUV24: descr = "24-bit YUV 4:4:4 8-8-8"; break; 1349 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break; 1350 case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break; 1351 case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break; 1352 case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break; 1353 case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break; 1354 case V4L2_PIX_FMT_YUVA32: descr = "32-bit YUVA 8-8-8-8"; break; 1355 case V4L2_PIX_FMT_YUVX32: descr = "32-bit YUVX 8-8-8-8"; break; 1356 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break; 1357 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break; 1358 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break; 1359 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break; 1360 case V4L2_PIX_FMT_YUV48_12: descr = "12-bit YUV 4:4:4 Packed"; break; 1361 case V4L2_PIX_FMT_NV12: descr = "Y/UV 4:2:0"; break; 1362 case V4L2_PIX_FMT_NV21: descr = "Y/VU 4:2:0"; break; 1363 case V4L2_PIX_FMT_NV16: descr = "Y/UV 4:2:2"; break; 1364 case V4L2_PIX_FMT_NV61: descr = "Y/VU 4:2:2"; break; 1365 case V4L2_PIX_FMT_NV24: descr = "Y/UV 4:4:4"; break; 1366 case V4L2_PIX_FMT_NV42: descr = "Y/VU 4:4:4"; break; 1367 case V4L2_PIX_FMT_P010: descr = "10-bit Y/UV 4:2:0"; break; 1368 case V4L2_PIX_FMT_P012: descr = "12-bit Y/UV 4:2:0"; break; 1369 case V4L2_PIX_FMT_NV12_4L4: descr = "Y/UV 4:2:0 (4x4 Linear)"; break; 1370 case V4L2_PIX_FMT_NV12_16L16: descr = "Y/UV 4:2:0 (16x16 Linear)"; break; 1371 case V4L2_PIX_FMT_NV12_32L32: descr = "Y/UV 4:2:0 (32x32 Linear)"; break; 1372 case V4L2_PIX_FMT_NV15_4L4: descr = "10-bit Y/UV 4:2:0 (4x4 Linear)"; break; 1373 case V4L2_PIX_FMT_P010_4L4: descr = "10-bit Y/UV 4:2:0 (4x4 Linear)"; break; 1374 case V4L2_PIX_FMT_NV12M: descr = "Y/UV 4:2:0 (N-C)"; break; 1375 case V4L2_PIX_FMT_NV21M: descr = "Y/VU 4:2:0 (N-C)"; break; 1376 case V4L2_PIX_FMT_NV16M: descr = "Y/UV 4:2:2 (N-C)"; break; 1377 case V4L2_PIX_FMT_NV61M: descr = "Y/VU 4:2:2 (N-C)"; break; 1378 case V4L2_PIX_FMT_NV12MT: descr = "Y/UV 4:2:0 (64x32 MB, N-C)"; break; 1379 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/UV 4:2:0 (16x16 MB, N-C)"; break; 1380 case V4L2_PIX_FMT_P012M: descr = "12-bit Y/UV 4:2:0 (N-C)"; break; 1381 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break; 1382 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break; 1383 case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break; 1384 case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break; 1385 case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break; 1386 case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break; 1387 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break; 1388 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break; 1389 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break; 1390 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break; 1391 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break; 1392 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break; 1393 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break; 1394 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break; 1395 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break; 1396 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break; 1397 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break; 1398 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break; 1399 case V4L2_PIX_FMT_IPU3_SBGGR10: descr = "10-bit bayer BGGR IPU3 Packed"; break; 1400 case V4L2_PIX_FMT_IPU3_SGBRG10: descr = "10-bit bayer GBRG IPU3 Packed"; break; 1401 case V4L2_PIX_FMT_IPU3_SGRBG10: descr = "10-bit bayer GRBG IPU3 Packed"; break; 1402 case V4L2_PIX_FMT_IPU3_SRGGB10: descr = "10-bit bayer RGGB IPU3 Packed"; break; 1403 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break; 1404 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break; 1405 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break; 1406 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break; 1407 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break; 1408 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break; 1409 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break; 1410 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break; 1411 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break; 1412 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break; 1413 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break; 1414 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break; 1415 case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break; 1416 case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break; 1417 case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break; 1418 case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break; 1419 case V4L2_PIX_FMT_SBGGR14: descr = "14-bit Bayer BGBG/GRGR"; break; 1420 case V4L2_PIX_FMT_SGBRG14: descr = "14-bit Bayer GBGB/RGRG"; break; 1421 case V4L2_PIX_FMT_SGRBG14: descr = "14-bit Bayer GRGR/BGBG"; break; 1422 case V4L2_PIX_FMT_SRGGB14: descr = "14-bit Bayer RGRG/GBGB"; break; 1423 case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break; 1424 case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break; 1425 case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break; 1426 case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break; 1427 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break; 1428 case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break; 1429 case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break; 1430 case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break; 1431 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break; 1432 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break; 1433 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break; 1434 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break; 1435 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break; 1436 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break; 1437 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break; 1438 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break; 1439 case V4L2_PIX_FMT_MM21: descr = "Mediatek 8-bit Block Format"; break; 1440 case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break; 1441 case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break; 1442 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break; 1443 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break; 1444 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break; 1445 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break; 1446 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break; 1447 case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break; 1448 case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break; 1449 case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break; 1450 case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit Signed Deltas"; break; 1451 case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit Signed Deltas"; break; 1452 case V4L2_TCH_FMT_TU16: descr = "16-bit Unsigned Touch Data"; break; 1453 case V4L2_TCH_FMT_TU08: descr = "8-bit Unsigned Touch Data"; break; 1454 case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break; 1455 case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break; 1456 case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break; 1457 case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break; 1458 case V4L2_META_FMT_VIVID: descr = "Vivid Metadata"; break; 1459 case V4L2_META_FMT_RK_ISP1_PARAMS: descr = "Rockchip ISP1 3A Parameters"; break; 1460 case V4L2_META_FMT_RK_ISP1_STAT_3A: descr = "Rockchip ISP1 3A Statistics"; break; 1461 case V4L2_META_FMT_RK_ISP1_EXT_PARAMS: descr = "Rockchip ISP1 Ext 3A Params"; break; 1462 case V4L2_PIX_FMT_NV12_8L128: descr = "NV12 (8x128 Linear)"; break; 1463 case V4L2_PIX_FMT_NV12M_8L128: descr = "NV12M (8x128 Linear)"; break; 1464 case V4L2_PIX_FMT_NV12_10BE_8L128: descr = "10-bit NV12 (8x128 Linear, BE)"; break; 1465 case V4L2_PIX_FMT_NV12M_10BE_8L128: descr = "10-bit NV12M (8x128 Linear, BE)"; break; 1466 case V4L2_PIX_FMT_Y210: descr = "10-bit YUYV Packed"; break; 1467 case V4L2_PIX_FMT_Y212: descr = "12-bit YUYV Packed"; break; 1468 case V4L2_PIX_FMT_Y216: descr = "16-bit YUYV Packed"; break; 1469 case V4L2_META_FMT_RPI_BE_CFG: descr = "RPi PiSP BE Config format"; break; 1470 case V4L2_META_FMT_GENERIC_8: descr = "8-bit Generic Metadata"; break; 1471 case V4L2_META_FMT_GENERIC_CSI2_10: descr = "8-bit Generic Meta, 10b CSI-2"; break; 1472 case V4L2_META_FMT_GENERIC_CSI2_12: descr = "8-bit Generic Meta, 12b CSI-2"; break; 1473 case V4L2_META_FMT_GENERIC_CSI2_14: descr = "8-bit Generic Meta, 14b CSI-2"; break; 1474 case V4L2_META_FMT_GENERIC_CSI2_16: descr = "8-bit Generic Meta, 16b CSI-2"; break; 1475 case V4L2_META_FMT_GENERIC_CSI2_20: descr = "8-bit Generic Meta, 20b CSI-2"; break; 1476 case V4L2_META_FMT_GENERIC_CSI2_24: descr = "8-bit Generic Meta, 24b CSI-2"; break; 1477 1478 default: 1479 /* Compressed formats */ 1480 flags = V4L2_FMT_FLAG_COMPRESSED; 1481 switch (fmt->pixelformat) { 1482 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1483 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break; 1484 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break; 1485 case V4L2_PIX_FMT_DV: descr = "1394"; break; 1486 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break; 1487 case V4L2_PIX_FMT_H264: descr = "H.264"; break; 1488 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break; 1489 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break; 1490 case V4L2_PIX_FMT_H264_SLICE: descr = "H.264 Parsed Slice Data"; break; 1491 case V4L2_PIX_FMT_H263: descr = "H.263"; break; 1492 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break; 1493 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break; 1494 case V4L2_PIX_FMT_MPEG2_SLICE: descr = "MPEG-2 Parsed Slice Data"; break; 1495 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 Part 2 ES"; break; 1496 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break; 1497 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break; 1498 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break; 1499 case V4L2_PIX_FMT_VP8: descr = "VP8"; break; 1500 case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break; 1501 case V4L2_PIX_FMT_VP9: descr = "VP9"; break; 1502 case V4L2_PIX_FMT_VP9_FRAME: descr = "VP9 Frame"; break; 1503 case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */ 1504 case V4L2_PIX_FMT_HEVC_SLICE: descr = "HEVC Parsed Slice Data"; break; 1505 case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */ 1506 case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */ 1507 case V4L2_PIX_FMT_SPK: descr = "Sorenson Spark"; break; 1508 case V4L2_PIX_FMT_RV30: descr = "RealVideo 8"; break; 1509 case V4L2_PIX_FMT_RV40: descr = "RealVideo 9 & 10"; break; 1510 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break; 1511 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break; 1512 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break; 1513 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break; 1514 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break; 1515 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break; 1516 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break; 1517 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break; 1518 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break; 1519 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break; 1520 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break; 1521 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break; 1522 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break; 1523 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break; 1524 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break; 1525 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break; 1526 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break; 1527 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break; 1528 case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break; 1529 case V4L2_PIX_FMT_QC08C: descr = "QCOM Compressed 8-bit Format"; break; 1530 case V4L2_PIX_FMT_QC10C: descr = "QCOM Compressed 10-bit Format"; break; 1531 case V4L2_PIX_FMT_AJPG: descr = "Aspeed JPEG"; break; 1532 case V4L2_PIX_FMT_AV1_FRAME: descr = "AV1 Frame"; break; 1533 case V4L2_PIX_FMT_MT2110T: descr = "Mediatek 10bit Tile Mode"; break; 1534 case V4L2_PIX_FMT_MT2110R: descr = "Mediatek 10bit Raster Mode"; break; 1535 case V4L2_PIX_FMT_HEXTILE: descr = "Hextile Compressed Format"; break; 1536 case V4L2_PIX_FMT_PISP_COMP1_RGGB: descr = "PiSP 8b RGRG/GBGB mode1 compr"; break; 1537 case V4L2_PIX_FMT_PISP_COMP1_GRBG: descr = "PiSP 8b GRGR/BGBG mode1 compr"; break; 1538 case V4L2_PIX_FMT_PISP_COMP1_GBRG: descr = "PiSP 8b GBGB/RGRG mode1 compr"; break; 1539 case V4L2_PIX_FMT_PISP_COMP1_BGGR: descr = "PiSP 8b BGBG/GRGR mode1 compr"; break; 1540 case V4L2_PIX_FMT_PISP_COMP1_MONO: descr = "PiSP 8b monochrome mode1 compr"; break; 1541 case V4L2_PIX_FMT_PISP_COMP2_RGGB: descr = "PiSP 8b RGRG/GBGB mode2 compr"; break; 1542 case V4L2_PIX_FMT_PISP_COMP2_GRBG: descr = "PiSP 8b GRGR/BGBG mode2 compr"; break; 1543 case V4L2_PIX_FMT_PISP_COMP2_GBRG: descr = "PiSP 8b GBGB/RGRG mode2 compr"; break; 1544 case V4L2_PIX_FMT_PISP_COMP2_BGGR: descr = "PiSP 8b BGBG/GRGR mode2 compr"; break; 1545 case V4L2_PIX_FMT_PISP_COMP2_MONO: descr = "PiSP 8b monochrome mode2 compr"; break; 1546 default: 1547 if (fmt->description[0]) 1548 return; 1549 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat); 1550 flags = 0; 1551 snprintf(fmt->description, sz, "%p4cc", 1552 &fmt->pixelformat); 1553 break; 1554 } 1555 } 1556 1557 if (fmt->type == V4L2_BUF_TYPE_META_CAPTURE) { 1558 switch (fmt->pixelformat) { 1559 case V4L2_META_FMT_GENERIC_8: 1560 case V4L2_META_FMT_GENERIC_CSI2_10: 1561 case V4L2_META_FMT_GENERIC_CSI2_12: 1562 case V4L2_META_FMT_GENERIC_CSI2_14: 1563 case V4L2_META_FMT_GENERIC_CSI2_16: 1564 case V4L2_META_FMT_GENERIC_CSI2_20: 1565 case V4L2_META_FMT_GENERIC_CSI2_24: 1566 fmt->flags |= V4L2_FMT_FLAG_META_LINE_BASED; 1567 break; 1568 default: 1569 fmt->flags &= ~V4L2_FMT_FLAG_META_LINE_BASED; 1570 } 1571 } 1572 1573 if (descr) 1574 WARN_ON(strscpy(fmt->description, descr, sz) < 0); 1575 fmt->flags |= flags; 1576 } 1577 1578 static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops, 1579 struct file *file, void *fh, void *arg) 1580 { 1581 struct video_device *vdev = video_devdata(file); 1582 struct v4l2_fmtdesc *p = arg; 1583 int ret = check_fmt(file, p->type); 1584 u32 mbus_code; 1585 u32 cap_mask; 1586 1587 if (ret) 1588 return ret; 1589 ret = -EINVAL; 1590 1591 if (!(vdev->device_caps & V4L2_CAP_IO_MC)) 1592 p->mbus_code = 0; 1593 1594 mbus_code = p->mbus_code; 1595 memset_after(p, 0, type); 1596 p->mbus_code = mbus_code; 1597 1598 switch (p->type) { 1599 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1600 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1601 cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE | 1602 V4L2_CAP_VIDEO_M2M_MPLANE; 1603 if (!!(vdev->device_caps & cap_mask) != 1604 (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) 1605 break; 1606 1607 if (unlikely(!ops->vidioc_enum_fmt_vid_cap)) 1608 break; 1609 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg); 1610 break; 1611 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1612 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay)) 1613 break; 1614 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg); 1615 break; 1616 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1617 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1618 cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE | 1619 V4L2_CAP_VIDEO_M2M_MPLANE; 1620 if (!!(vdev->device_caps & cap_mask) != 1621 (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)) 1622 break; 1623 1624 if (unlikely(!ops->vidioc_enum_fmt_vid_out)) 1625 break; 1626 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg); 1627 break; 1628 case V4L2_BUF_TYPE_SDR_CAPTURE: 1629 if (unlikely(!ops->vidioc_enum_fmt_sdr_cap)) 1630 break; 1631 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg); 1632 break; 1633 case V4L2_BUF_TYPE_SDR_OUTPUT: 1634 if (unlikely(!ops->vidioc_enum_fmt_sdr_out)) 1635 break; 1636 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg); 1637 break; 1638 case V4L2_BUF_TYPE_META_CAPTURE: 1639 if (unlikely(!ops->vidioc_enum_fmt_meta_cap)) 1640 break; 1641 ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg); 1642 break; 1643 case V4L2_BUF_TYPE_META_OUTPUT: 1644 if (unlikely(!ops->vidioc_enum_fmt_meta_out)) 1645 break; 1646 ret = ops->vidioc_enum_fmt_meta_out(file, fh, arg); 1647 break; 1648 } 1649 if (ret == 0) 1650 v4l_fill_fmtdesc(p); 1651 return ret; 1652 } 1653 1654 static void v4l_pix_format_touch(struct v4l2_pix_format *p) 1655 { 1656 /* 1657 * The v4l2_pix_format structure contains fields that make no sense for 1658 * touch. Set them to default values in this case. 1659 */ 1660 1661 p->field = V4L2_FIELD_NONE; 1662 p->colorspace = V4L2_COLORSPACE_RAW; 1663 p->flags = 0; 1664 p->ycbcr_enc = 0; 1665 p->quantization = 0; 1666 p->xfer_func = 0; 1667 } 1668 1669 static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, 1670 struct file *file, void *fh, void *arg) 1671 { 1672 struct v4l2_format *p = arg; 1673 struct video_device *vfd = video_devdata(file); 1674 int ret = check_fmt(file, p->type); 1675 1676 if (ret) 1677 return ret; 1678 1679 memset(&p->fmt, 0, sizeof(p->fmt)); 1680 1681 switch (p->type) { 1682 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1683 if (unlikely(!ops->vidioc_g_fmt_vid_cap)) 1684 break; 1685 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1686 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg); 1687 /* just in case the driver zeroed it again */ 1688 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1689 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1690 v4l_pix_format_touch(&p->fmt.pix); 1691 return ret; 1692 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1693 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg); 1694 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1695 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg); 1696 case V4L2_BUF_TYPE_VBI_CAPTURE: 1697 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg); 1698 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1699 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg); 1700 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1701 if (unlikely(!ops->vidioc_g_fmt_vid_out)) 1702 break; 1703 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1704 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg); 1705 /* just in case the driver zeroed it again */ 1706 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1707 return ret; 1708 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1709 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg); 1710 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1711 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg); 1712 case V4L2_BUF_TYPE_VBI_OUTPUT: 1713 return ops->vidioc_g_fmt_vbi_out(file, fh, arg); 1714 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1715 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg); 1716 case V4L2_BUF_TYPE_SDR_CAPTURE: 1717 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg); 1718 case V4L2_BUF_TYPE_SDR_OUTPUT: 1719 return ops->vidioc_g_fmt_sdr_out(file, fh, arg); 1720 case V4L2_BUF_TYPE_META_CAPTURE: 1721 return ops->vidioc_g_fmt_meta_cap(file, fh, arg); 1722 case V4L2_BUF_TYPE_META_OUTPUT: 1723 return ops->vidioc_g_fmt_meta_out(file, fh, arg); 1724 } 1725 return -EINVAL; 1726 } 1727 1728 static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, 1729 struct file *file, void *fh, void *arg) 1730 { 1731 struct v4l2_format *p = arg; 1732 struct video_device *vfd = video_devdata(file); 1733 int ret = check_fmt(file, p->type); 1734 unsigned int i; 1735 1736 if (ret) 1737 return ret; 1738 1739 ret = v4l_enable_media_source(vfd); 1740 if (ret) 1741 return ret; 1742 v4l_sanitize_format(p); 1743 1744 switch (p->type) { 1745 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1746 if (unlikely(!ops->vidioc_s_fmt_vid_cap)) 1747 break; 1748 memset_after(p, 0, fmt.pix); 1749 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg); 1750 /* just in case the driver zeroed it again */ 1751 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1752 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1753 v4l_pix_format_touch(&p->fmt.pix); 1754 return ret; 1755 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1756 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane)) 1757 break; 1758 memset_after(p, 0, fmt.pix_mp.xfer_func); 1759 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1760 memset_after(&p->fmt.pix_mp.plane_fmt[i], 1761 0, bytesperline); 1762 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg); 1763 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1764 if (unlikely(!ops->vidioc_s_fmt_vid_overlay)) 1765 break; 1766 memset_after(p, 0, fmt.win); 1767 p->fmt.win.clips = NULL; 1768 p->fmt.win.clipcount = 0; 1769 p->fmt.win.bitmap = NULL; 1770 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg); 1771 case V4L2_BUF_TYPE_VBI_CAPTURE: 1772 if (unlikely(!ops->vidioc_s_fmt_vbi_cap)) 1773 break; 1774 memset_after(p, 0, fmt.vbi.flags); 1775 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg); 1776 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1777 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap)) 1778 break; 1779 memset_after(p, 0, fmt.sliced.io_size); 1780 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg); 1781 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1782 if (unlikely(!ops->vidioc_s_fmt_vid_out)) 1783 break; 1784 memset_after(p, 0, fmt.pix); 1785 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg); 1786 /* just in case the driver zeroed it again */ 1787 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1788 return ret; 1789 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1790 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane)) 1791 break; 1792 memset_after(p, 0, fmt.pix_mp.xfer_func); 1793 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1794 memset_after(&p->fmt.pix_mp.plane_fmt[i], 1795 0, bytesperline); 1796 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg); 1797 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1798 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay)) 1799 break; 1800 memset_after(p, 0, fmt.win); 1801 p->fmt.win.clips = NULL; 1802 p->fmt.win.clipcount = 0; 1803 p->fmt.win.bitmap = NULL; 1804 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg); 1805 case V4L2_BUF_TYPE_VBI_OUTPUT: 1806 if (unlikely(!ops->vidioc_s_fmt_vbi_out)) 1807 break; 1808 memset_after(p, 0, fmt.vbi.flags); 1809 return ops->vidioc_s_fmt_vbi_out(file, fh, arg); 1810 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1811 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out)) 1812 break; 1813 memset_after(p, 0, fmt.sliced.io_size); 1814 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg); 1815 case V4L2_BUF_TYPE_SDR_CAPTURE: 1816 if (unlikely(!ops->vidioc_s_fmt_sdr_cap)) 1817 break; 1818 memset_after(p, 0, fmt.sdr.buffersize); 1819 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg); 1820 case V4L2_BUF_TYPE_SDR_OUTPUT: 1821 if (unlikely(!ops->vidioc_s_fmt_sdr_out)) 1822 break; 1823 memset_after(p, 0, fmt.sdr.buffersize); 1824 return ops->vidioc_s_fmt_sdr_out(file, fh, arg); 1825 case V4L2_BUF_TYPE_META_CAPTURE: 1826 if (unlikely(!ops->vidioc_s_fmt_meta_cap)) 1827 break; 1828 memset_after(p, 0, fmt.meta); 1829 return ops->vidioc_s_fmt_meta_cap(file, fh, arg); 1830 case V4L2_BUF_TYPE_META_OUTPUT: 1831 if (unlikely(!ops->vidioc_s_fmt_meta_out)) 1832 break; 1833 memset_after(p, 0, fmt.meta); 1834 return ops->vidioc_s_fmt_meta_out(file, fh, arg); 1835 } 1836 return -EINVAL; 1837 } 1838 1839 static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, 1840 struct file *file, void *fh, void *arg) 1841 { 1842 struct v4l2_format *p = arg; 1843 struct video_device *vfd = video_devdata(file); 1844 int ret = check_fmt(file, p->type); 1845 unsigned int i; 1846 1847 if (ret) 1848 return ret; 1849 1850 v4l_sanitize_format(p); 1851 1852 switch (p->type) { 1853 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1854 if (unlikely(!ops->vidioc_try_fmt_vid_cap)) 1855 break; 1856 memset_after(p, 0, fmt.pix); 1857 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg); 1858 /* just in case the driver zeroed it again */ 1859 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1860 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1861 v4l_pix_format_touch(&p->fmt.pix); 1862 return ret; 1863 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1864 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane)) 1865 break; 1866 memset_after(p, 0, fmt.pix_mp.xfer_func); 1867 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1868 memset_after(&p->fmt.pix_mp.plane_fmt[i], 1869 0, bytesperline); 1870 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg); 1871 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1872 if (unlikely(!ops->vidioc_try_fmt_vid_overlay)) 1873 break; 1874 memset_after(p, 0, fmt.win); 1875 p->fmt.win.clips = NULL; 1876 p->fmt.win.clipcount = 0; 1877 p->fmt.win.bitmap = NULL; 1878 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg); 1879 case V4L2_BUF_TYPE_VBI_CAPTURE: 1880 if (unlikely(!ops->vidioc_try_fmt_vbi_cap)) 1881 break; 1882 memset_after(p, 0, fmt.vbi.flags); 1883 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg); 1884 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1885 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap)) 1886 break; 1887 memset_after(p, 0, fmt.sliced.io_size); 1888 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg); 1889 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1890 if (unlikely(!ops->vidioc_try_fmt_vid_out)) 1891 break; 1892 memset_after(p, 0, fmt.pix); 1893 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg); 1894 /* just in case the driver zeroed it again */ 1895 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1896 return ret; 1897 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1898 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane)) 1899 break; 1900 memset_after(p, 0, fmt.pix_mp.xfer_func); 1901 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1902 memset_after(&p->fmt.pix_mp.plane_fmt[i], 1903 0, bytesperline); 1904 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg); 1905 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1906 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay)) 1907 break; 1908 memset_after(p, 0, fmt.win); 1909 p->fmt.win.clips = NULL; 1910 p->fmt.win.clipcount = 0; 1911 p->fmt.win.bitmap = NULL; 1912 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg); 1913 case V4L2_BUF_TYPE_VBI_OUTPUT: 1914 if (unlikely(!ops->vidioc_try_fmt_vbi_out)) 1915 break; 1916 memset_after(p, 0, fmt.vbi.flags); 1917 return ops->vidioc_try_fmt_vbi_out(file, fh, arg); 1918 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1919 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out)) 1920 break; 1921 memset_after(p, 0, fmt.sliced.io_size); 1922 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg); 1923 case V4L2_BUF_TYPE_SDR_CAPTURE: 1924 if (unlikely(!ops->vidioc_try_fmt_sdr_cap)) 1925 break; 1926 memset_after(p, 0, fmt.sdr.buffersize); 1927 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg); 1928 case V4L2_BUF_TYPE_SDR_OUTPUT: 1929 if (unlikely(!ops->vidioc_try_fmt_sdr_out)) 1930 break; 1931 memset_after(p, 0, fmt.sdr.buffersize); 1932 return ops->vidioc_try_fmt_sdr_out(file, fh, arg); 1933 case V4L2_BUF_TYPE_META_CAPTURE: 1934 if (unlikely(!ops->vidioc_try_fmt_meta_cap)) 1935 break; 1936 memset_after(p, 0, fmt.meta); 1937 return ops->vidioc_try_fmt_meta_cap(file, fh, arg); 1938 case V4L2_BUF_TYPE_META_OUTPUT: 1939 if (unlikely(!ops->vidioc_try_fmt_meta_out)) 1940 break; 1941 memset_after(p, 0, fmt.meta); 1942 return ops->vidioc_try_fmt_meta_out(file, fh, arg); 1943 } 1944 return -EINVAL; 1945 } 1946 1947 static int v4l_streamon(const struct v4l2_ioctl_ops *ops, 1948 struct file *file, void *fh, void *arg) 1949 { 1950 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg); 1951 } 1952 1953 static int v4l_streamoff(const struct v4l2_ioctl_ops *ops, 1954 struct file *file, void *fh, void *arg) 1955 { 1956 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg); 1957 } 1958 1959 static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops, 1960 struct file *file, void *fh, void *arg) 1961 { 1962 struct video_device *vfd = video_devdata(file); 1963 struct v4l2_tuner *p = arg; 1964 int err; 1965 1966 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1967 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1968 err = ops->vidioc_g_tuner(file, fh, p); 1969 if (!err) 1970 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1971 return err; 1972 } 1973 1974 static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops, 1975 struct file *file, void *fh, void *arg) 1976 { 1977 struct video_device *vfd = video_devdata(file); 1978 struct v4l2_tuner *p = arg; 1979 int ret; 1980 1981 ret = v4l_enable_media_source(vfd); 1982 if (ret) 1983 return ret; 1984 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1985 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1986 return ops->vidioc_s_tuner(file, fh, p); 1987 } 1988 1989 static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops, 1990 struct file *file, void *fh, void *arg) 1991 { 1992 struct video_device *vfd = video_devdata(file); 1993 struct v4l2_modulator *p = arg; 1994 int err; 1995 1996 if (vfd->vfl_type == VFL_TYPE_RADIO) 1997 p->type = V4L2_TUNER_RADIO; 1998 1999 err = ops->vidioc_g_modulator(file, fh, p); 2000 if (!err) 2001 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 2002 return err; 2003 } 2004 2005 static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops, 2006 struct file *file, void *fh, void *arg) 2007 { 2008 struct video_device *vfd = video_devdata(file); 2009 struct v4l2_modulator *p = arg; 2010 2011 if (vfd->vfl_type == VFL_TYPE_RADIO) 2012 p->type = V4L2_TUNER_RADIO; 2013 2014 return ops->vidioc_s_modulator(file, fh, p); 2015 } 2016 2017 static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops, 2018 struct file *file, void *fh, void *arg) 2019 { 2020 struct video_device *vfd = video_devdata(file); 2021 struct v4l2_frequency *p = arg; 2022 2023 if (vfd->vfl_type == VFL_TYPE_SDR) 2024 p->type = V4L2_TUNER_SDR; 2025 else 2026 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2027 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2028 return ops->vidioc_g_frequency(file, fh, p); 2029 } 2030 2031 static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops, 2032 struct file *file, void *fh, void *arg) 2033 { 2034 struct video_device *vfd = video_devdata(file); 2035 const struct v4l2_frequency *p = arg; 2036 enum v4l2_tuner_type type; 2037 int ret; 2038 2039 ret = v4l_enable_media_source(vfd); 2040 if (ret) 2041 return ret; 2042 if (vfd->vfl_type == VFL_TYPE_SDR) { 2043 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 2044 return -EINVAL; 2045 } else { 2046 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2047 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2048 if (type != p->type) 2049 return -EINVAL; 2050 } 2051 return ops->vidioc_s_frequency(file, fh, p); 2052 } 2053 2054 static int v4l_enumstd(const struct v4l2_ioctl_ops *ops, 2055 struct file *file, void *fh, void *arg) 2056 { 2057 struct video_device *vfd = video_devdata(file); 2058 struct v4l2_standard *p = arg; 2059 2060 return v4l_video_std_enumstd(p, vfd->tvnorms); 2061 } 2062 2063 static int v4l_s_std(const struct v4l2_ioctl_ops *ops, 2064 struct file *file, void *fh, void *arg) 2065 { 2066 struct video_device *vfd = video_devdata(file); 2067 v4l2_std_id id = *(v4l2_std_id *)arg, norm; 2068 int ret; 2069 2070 ret = v4l_enable_media_source(vfd); 2071 if (ret) 2072 return ret; 2073 norm = id & vfd->tvnorms; 2074 if (vfd->tvnorms && !norm) /* Check if std is supported */ 2075 return -EINVAL; 2076 2077 /* Calls the specific handler */ 2078 return ops->vidioc_s_std(file, fh, norm); 2079 } 2080 2081 static int v4l_querystd(const struct v4l2_ioctl_ops *ops, 2082 struct file *file, void *fh, void *arg) 2083 { 2084 struct video_device *vfd = video_devdata(file); 2085 v4l2_std_id *p = arg; 2086 int ret; 2087 2088 ret = v4l_enable_media_source(vfd); 2089 if (ret) 2090 return ret; 2091 /* 2092 * If no signal is detected, then the driver should return 2093 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with 2094 * any standards that do not apply removed. 2095 * 2096 * This means that tuners, audio and video decoders can join 2097 * their efforts to improve the standards detection. 2098 */ 2099 *p = vfd->tvnorms; 2100 return ops->vidioc_querystd(file, fh, arg); 2101 } 2102 2103 static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops, 2104 struct file *file, void *fh, void *arg) 2105 { 2106 struct video_device *vfd = video_devdata(file); 2107 struct v4l2_hw_freq_seek *p = arg; 2108 enum v4l2_tuner_type type; 2109 int ret; 2110 2111 ret = v4l_enable_media_source(vfd); 2112 if (ret) 2113 return ret; 2114 /* s_hw_freq_seek is not supported for SDR for now */ 2115 if (vfd->vfl_type == VFL_TYPE_SDR) 2116 return -EINVAL; 2117 2118 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2119 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2120 if (p->type != type) 2121 return -EINVAL; 2122 return ops->vidioc_s_hw_freq_seek(file, fh, p); 2123 } 2124 2125 static int v4l_s_fbuf(const struct v4l2_ioctl_ops *ops, 2126 struct file *file, void *fh, void *arg) 2127 { 2128 struct v4l2_framebuffer *p = arg; 2129 2130 p->base = NULL; 2131 return ops->vidioc_s_fbuf(file, fh, p); 2132 } 2133 2134 static int v4l_overlay(const struct v4l2_ioctl_ops *ops, 2135 struct file *file, void *fh, void *arg) 2136 { 2137 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg); 2138 } 2139 2140 static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops, 2141 struct file *file, void *fh, void *arg) 2142 { 2143 struct video_device *vfd = video_devdata(file); 2144 struct v4l2_requestbuffers *p = arg; 2145 int ret = check_fmt(file, p->type); 2146 2147 if (ret) 2148 return ret; 2149 2150 memset_after(p, 0, flags); 2151 2152 p->capabilities = 0; 2153 if (is_valid_ioctl(vfd, VIDIOC_REMOVE_BUFS)) 2154 p->capabilities = V4L2_BUF_CAP_SUPPORTS_REMOVE_BUFS; 2155 2156 return ops->vidioc_reqbufs(file, fh, p); 2157 } 2158 2159 static int v4l_querybuf(const struct v4l2_ioctl_ops *ops, 2160 struct file *file, void *fh, void *arg) 2161 { 2162 struct v4l2_buffer *p = arg; 2163 int ret = check_fmt(file, p->type); 2164 2165 return ret ? ret : ops->vidioc_querybuf(file, fh, p); 2166 } 2167 2168 static int v4l_qbuf(const struct v4l2_ioctl_ops *ops, 2169 struct file *file, void *fh, void *arg) 2170 { 2171 struct v4l2_buffer *p = arg; 2172 int ret = check_fmt(file, p->type); 2173 2174 return ret ? ret : ops->vidioc_qbuf(file, fh, p); 2175 } 2176 2177 static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops, 2178 struct file *file, void *fh, void *arg) 2179 { 2180 struct v4l2_buffer *p = arg; 2181 int ret = check_fmt(file, p->type); 2182 2183 return ret ? ret : ops->vidioc_dqbuf(file, fh, p); 2184 } 2185 2186 static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops, 2187 struct file *file, void *fh, void *arg) 2188 { 2189 struct video_device *vfd = video_devdata(file); 2190 struct v4l2_create_buffers *create = arg; 2191 int ret = check_fmt(file, create->format.type); 2192 2193 if (ret) 2194 return ret; 2195 2196 memset_after(create, 0, flags); 2197 2198 v4l_sanitize_format(&create->format); 2199 2200 create->capabilities = 0; 2201 if (is_valid_ioctl(vfd, VIDIOC_REMOVE_BUFS)) 2202 create->capabilities = V4L2_BUF_CAP_SUPPORTS_REMOVE_BUFS; 2203 2204 ret = ops->vidioc_create_bufs(file, fh, create); 2205 2206 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 2207 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT) 2208 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 2209 2210 return ret; 2211 } 2212 2213 static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops, 2214 struct file *file, void *fh, void *arg) 2215 { 2216 struct v4l2_buffer *b = arg; 2217 int ret = check_fmt(file, b->type); 2218 2219 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b); 2220 } 2221 2222 static int v4l_remove_bufs(const struct v4l2_ioctl_ops *ops, 2223 struct file *file, void *fh, void *arg) 2224 { 2225 struct v4l2_remove_buffers *remove = arg; 2226 2227 if (ops->vidioc_remove_bufs) 2228 return ops->vidioc_remove_bufs(file, fh, remove); 2229 2230 return -ENOTTY; 2231 } 2232 2233 static int v4l_g_parm(const struct v4l2_ioctl_ops *ops, 2234 struct file *file, void *fh, void *arg) 2235 { 2236 struct video_device *vfd = video_devdata(file); 2237 struct v4l2_streamparm *p = arg; 2238 v4l2_std_id std; 2239 int ret = check_fmt(file, p->type); 2240 2241 if (ret) 2242 return ret; 2243 if (ops->vidioc_g_parm) 2244 return ops->vidioc_g_parm(file, fh, p); 2245 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && 2246 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2247 return -EINVAL; 2248 if (vfd->device_caps & V4L2_CAP_READWRITE) 2249 p->parm.capture.readbuffers = 2; 2250 ret = ops->vidioc_g_std(file, fh, &std); 2251 if (ret == 0) 2252 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe); 2253 return ret; 2254 } 2255 2256 static int v4l_s_parm(const struct v4l2_ioctl_ops *ops, 2257 struct file *file, void *fh, void *arg) 2258 { 2259 struct v4l2_streamparm *p = arg; 2260 int ret = check_fmt(file, p->type); 2261 2262 if (ret) 2263 return ret; 2264 2265 /* Note: extendedmode is never used in drivers */ 2266 if (V4L2_TYPE_IS_OUTPUT(p->type)) { 2267 memset(p->parm.output.reserved, 0, 2268 sizeof(p->parm.output.reserved)); 2269 p->parm.output.extendedmode = 0; 2270 p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY; 2271 } else { 2272 memset(p->parm.capture.reserved, 0, 2273 sizeof(p->parm.capture.reserved)); 2274 p->parm.capture.extendedmode = 0; 2275 p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY; 2276 } 2277 return ops->vidioc_s_parm(file, fh, p); 2278 } 2279 2280 static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops, 2281 struct file *file, void *fh, void *arg) 2282 { 2283 struct video_device *vfd = video_devdata(file); 2284 struct v4l2_queryctrl *p = arg; 2285 struct v4l2_fh *vfh = 2286 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2287 2288 if (vfh && vfh->ctrl_handler) 2289 return v4l2_queryctrl(vfh->ctrl_handler, p); 2290 if (vfd->ctrl_handler) 2291 return v4l2_queryctrl(vfd->ctrl_handler, p); 2292 if (ops->vidioc_queryctrl) 2293 return ops->vidioc_queryctrl(file, fh, p); 2294 return -ENOTTY; 2295 } 2296 2297 static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops, 2298 struct file *file, void *fh, void *arg) 2299 { 2300 struct video_device *vfd = video_devdata(file); 2301 struct v4l2_query_ext_ctrl *p = arg; 2302 struct v4l2_fh *vfh = 2303 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2304 2305 if (vfh && vfh->ctrl_handler) 2306 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p); 2307 if (vfd->ctrl_handler) 2308 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p); 2309 if (ops->vidioc_query_ext_ctrl) 2310 return ops->vidioc_query_ext_ctrl(file, fh, p); 2311 return -ENOTTY; 2312 } 2313 2314 static int v4l_querymenu(const struct v4l2_ioctl_ops *ops, 2315 struct file *file, void *fh, void *arg) 2316 { 2317 struct video_device *vfd = video_devdata(file); 2318 struct v4l2_querymenu *p = arg; 2319 struct v4l2_fh *vfh = 2320 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2321 2322 if (vfh && vfh->ctrl_handler) 2323 return v4l2_querymenu(vfh->ctrl_handler, p); 2324 if (vfd->ctrl_handler) 2325 return v4l2_querymenu(vfd->ctrl_handler, p); 2326 if (ops->vidioc_querymenu) 2327 return ops->vidioc_querymenu(file, fh, p); 2328 return -ENOTTY; 2329 } 2330 2331 static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops, 2332 struct file *file, void *fh, void *arg) 2333 { 2334 struct video_device *vfd = video_devdata(file); 2335 struct v4l2_control *p = arg; 2336 struct v4l2_fh *vfh = 2337 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2338 struct v4l2_ext_controls ctrls; 2339 struct v4l2_ext_control ctrl; 2340 2341 if (vfh && vfh->ctrl_handler) 2342 return v4l2_g_ctrl(vfh->ctrl_handler, p); 2343 if (vfd->ctrl_handler) 2344 return v4l2_g_ctrl(vfd->ctrl_handler, p); 2345 if (ops->vidioc_g_ctrl) 2346 return ops->vidioc_g_ctrl(file, fh, p); 2347 if (ops->vidioc_g_ext_ctrls == NULL) 2348 return -ENOTTY; 2349 2350 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2351 ctrls.count = 1; 2352 ctrls.controls = &ctrl; 2353 ctrl.id = p->id; 2354 ctrl.value = p->value; 2355 if (check_ext_ctrls(&ctrls, VIDIOC_G_CTRL)) { 2356 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls); 2357 2358 if (ret == 0) 2359 p->value = ctrl.value; 2360 return ret; 2361 } 2362 return -EINVAL; 2363 } 2364 2365 static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, 2366 struct file *file, void *fh, void *arg) 2367 { 2368 struct video_device *vfd = video_devdata(file); 2369 struct v4l2_control *p = arg; 2370 struct v4l2_fh *vfh = 2371 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2372 struct v4l2_ext_controls ctrls; 2373 struct v4l2_ext_control ctrl; 2374 int ret; 2375 2376 if (vfh && vfh->ctrl_handler) 2377 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p); 2378 if (vfd->ctrl_handler) 2379 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p); 2380 if (ops->vidioc_s_ctrl) 2381 return ops->vidioc_s_ctrl(file, fh, p); 2382 if (ops->vidioc_s_ext_ctrls == NULL) 2383 return -ENOTTY; 2384 2385 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2386 ctrls.count = 1; 2387 ctrls.controls = &ctrl; 2388 ctrl.id = p->id; 2389 ctrl.value = p->value; 2390 if (!check_ext_ctrls(&ctrls, VIDIOC_S_CTRL)) 2391 return -EINVAL; 2392 ret = ops->vidioc_s_ext_ctrls(file, fh, &ctrls); 2393 p->value = ctrl.value; 2394 return ret; 2395 } 2396 2397 static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2398 struct file *file, void *fh, void *arg) 2399 { 2400 struct video_device *vfd = video_devdata(file); 2401 struct v4l2_ext_controls *p = arg; 2402 struct v4l2_fh *vfh = 2403 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2404 2405 p->error_idx = p->count; 2406 if (vfh && vfh->ctrl_handler) 2407 return v4l2_g_ext_ctrls(vfh->ctrl_handler, 2408 vfd, vfd->v4l2_dev->mdev, p); 2409 if (vfd->ctrl_handler) 2410 return v4l2_g_ext_ctrls(vfd->ctrl_handler, 2411 vfd, vfd->v4l2_dev->mdev, p); 2412 if (ops->vidioc_g_ext_ctrls == NULL) 2413 return -ENOTTY; 2414 return check_ext_ctrls(p, VIDIOC_G_EXT_CTRLS) ? 2415 ops->vidioc_g_ext_ctrls(file, fh, p) : -EINVAL; 2416 } 2417 2418 static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2419 struct file *file, void *fh, void *arg) 2420 { 2421 struct video_device *vfd = video_devdata(file); 2422 struct v4l2_ext_controls *p = arg; 2423 struct v4l2_fh *vfh = 2424 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2425 2426 p->error_idx = p->count; 2427 if (vfh && vfh->ctrl_handler) 2428 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, 2429 vfd, vfd->v4l2_dev->mdev, p); 2430 if (vfd->ctrl_handler) 2431 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, 2432 vfd, vfd->v4l2_dev->mdev, p); 2433 if (ops->vidioc_s_ext_ctrls == NULL) 2434 return -ENOTTY; 2435 return check_ext_ctrls(p, VIDIOC_S_EXT_CTRLS) ? 2436 ops->vidioc_s_ext_ctrls(file, fh, p) : -EINVAL; 2437 } 2438 2439 static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2440 struct file *file, void *fh, void *arg) 2441 { 2442 struct video_device *vfd = video_devdata(file); 2443 struct v4l2_ext_controls *p = arg; 2444 struct v4l2_fh *vfh = 2445 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2446 2447 p->error_idx = p->count; 2448 if (vfh && vfh->ctrl_handler) 2449 return v4l2_try_ext_ctrls(vfh->ctrl_handler, 2450 vfd, vfd->v4l2_dev->mdev, p); 2451 if (vfd->ctrl_handler) 2452 return v4l2_try_ext_ctrls(vfd->ctrl_handler, 2453 vfd, vfd->v4l2_dev->mdev, p); 2454 if (ops->vidioc_try_ext_ctrls == NULL) 2455 return -ENOTTY; 2456 return check_ext_ctrls(p, VIDIOC_TRY_EXT_CTRLS) ? 2457 ops->vidioc_try_ext_ctrls(file, fh, p) : -EINVAL; 2458 } 2459 2460 /* 2461 * The selection API specified originally that the _MPLANE buffer types 2462 * shouldn't be used. The reasons for this are lost in the mists of time 2463 * (or just really crappy memories). Regardless, this is really annoying 2464 * for userspace. So to keep things simple we map _MPLANE buffer types 2465 * to their 'regular' counterparts before calling the driver. And we 2466 * restore it afterwards. This way applications can use either buffer 2467 * type and drivers don't need to check for both. 2468 */ 2469 static int v4l_g_selection(const struct v4l2_ioctl_ops *ops, 2470 struct file *file, void *fh, void *arg) 2471 { 2472 struct v4l2_selection *p = arg; 2473 u32 old_type = p->type; 2474 int ret; 2475 2476 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2477 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2478 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2479 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2480 ret = ops->vidioc_g_selection(file, fh, p); 2481 p->type = old_type; 2482 return ret; 2483 } 2484 2485 static int v4l_s_selection(const struct v4l2_ioctl_ops *ops, 2486 struct file *file, void *fh, void *arg) 2487 { 2488 struct v4l2_selection *p = arg; 2489 u32 old_type = p->type; 2490 int ret; 2491 2492 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2493 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2494 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2495 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2496 ret = ops->vidioc_s_selection(file, fh, p); 2497 p->type = old_type; 2498 return ret; 2499 } 2500 2501 static int v4l_g_crop(const struct v4l2_ioctl_ops *ops, 2502 struct file *file, void *fh, void *arg) 2503 { 2504 struct video_device *vfd = video_devdata(file); 2505 struct v4l2_crop *p = arg; 2506 struct v4l2_selection s = { 2507 .type = p->type, 2508 }; 2509 int ret; 2510 2511 /* simulate capture crop using selection api */ 2512 2513 /* crop means compose for output devices */ 2514 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2515 s.target = V4L2_SEL_TGT_COMPOSE; 2516 else 2517 s.target = V4L2_SEL_TGT_CROP; 2518 2519 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2520 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2521 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2522 2523 ret = v4l_g_selection(ops, file, fh, &s); 2524 2525 /* copying results to old structure on success */ 2526 if (!ret) 2527 p->c = s.r; 2528 return ret; 2529 } 2530 2531 static int v4l_s_crop(const struct v4l2_ioctl_ops *ops, 2532 struct file *file, void *fh, void *arg) 2533 { 2534 struct video_device *vfd = video_devdata(file); 2535 struct v4l2_crop *p = arg; 2536 struct v4l2_selection s = { 2537 .type = p->type, 2538 .r = p->c, 2539 }; 2540 2541 /* simulate capture crop using selection api */ 2542 2543 /* crop means compose for output devices */ 2544 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2545 s.target = V4L2_SEL_TGT_COMPOSE; 2546 else 2547 s.target = V4L2_SEL_TGT_CROP; 2548 2549 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2550 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2551 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2552 2553 return v4l_s_selection(ops, file, fh, &s); 2554 } 2555 2556 static int v4l_cropcap(const struct v4l2_ioctl_ops *ops, 2557 struct file *file, void *fh, void *arg) 2558 { 2559 struct video_device *vfd = video_devdata(file); 2560 struct v4l2_cropcap *p = arg; 2561 struct v4l2_selection s = { .type = p->type }; 2562 int ret = 0; 2563 2564 /* setting trivial pixelaspect */ 2565 p->pixelaspect.numerator = 1; 2566 p->pixelaspect.denominator = 1; 2567 2568 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2569 s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2570 else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2571 s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2572 2573 /* 2574 * The determine_valid_ioctls() call already should ensure 2575 * that this can never happen, but just in case... 2576 */ 2577 if (WARN_ON(!ops->vidioc_g_selection)) 2578 return -ENOTTY; 2579 2580 if (ops->vidioc_g_pixelaspect) 2581 ret = ops->vidioc_g_pixelaspect(file, fh, s.type, 2582 &p->pixelaspect); 2583 2584 /* 2585 * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the 2586 * square pixel aspect ratio in that case. 2587 */ 2588 if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD) 2589 return ret; 2590 2591 /* Use g_selection() to fill in the bounds and defrect rectangles */ 2592 2593 /* obtaining bounds */ 2594 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2595 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS; 2596 else 2597 s.target = V4L2_SEL_TGT_CROP_BOUNDS; 2598 2599 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2600 s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ? 2601 V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS; 2602 2603 ret = v4l_g_selection(ops, file, fh, &s); 2604 if (ret) 2605 return ret; 2606 p->bounds = s.r; 2607 2608 /* obtaining defrect */ 2609 if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS) 2610 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT; 2611 else 2612 s.target = V4L2_SEL_TGT_CROP_DEFAULT; 2613 2614 ret = v4l_g_selection(ops, file, fh, &s); 2615 if (ret) 2616 return ret; 2617 p->defrect = s.r; 2618 2619 return 0; 2620 } 2621 2622 static int v4l_log_status(const struct v4l2_ioctl_ops *ops, 2623 struct file *file, void *fh, void *arg) 2624 { 2625 struct video_device *vfd = video_devdata(file); 2626 int ret; 2627 2628 if (vfd->v4l2_dev) 2629 pr_info("%s: ================= START STATUS =================\n", 2630 vfd->v4l2_dev->name); 2631 ret = ops->vidioc_log_status(file, fh); 2632 if (vfd->v4l2_dev) 2633 pr_info("%s: ================== END STATUS ==================\n", 2634 vfd->v4l2_dev->name); 2635 return ret; 2636 } 2637 2638 static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops, 2639 struct file *file, void *fh, void *arg) 2640 { 2641 #ifdef CONFIG_VIDEO_ADV_DEBUG 2642 struct v4l2_dbg_register *p = arg; 2643 struct video_device *vfd = video_devdata(file); 2644 struct v4l2_subdev *sd; 2645 int idx = 0; 2646 2647 if (!capable(CAP_SYS_ADMIN)) 2648 return -EPERM; 2649 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2650 if (vfd->v4l2_dev == NULL) 2651 return -EINVAL; 2652 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2653 if (p->match.addr == idx++) 2654 return v4l2_subdev_call(sd, core, g_register, p); 2655 return -EINVAL; 2656 } 2657 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2658 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2659 return ops->vidioc_g_register(file, fh, p); 2660 return -EINVAL; 2661 #else 2662 return -ENOTTY; 2663 #endif 2664 } 2665 2666 static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops, 2667 struct file *file, void *fh, void *arg) 2668 { 2669 #ifdef CONFIG_VIDEO_ADV_DEBUG 2670 const struct v4l2_dbg_register *p = arg; 2671 struct video_device *vfd = video_devdata(file); 2672 struct v4l2_subdev *sd; 2673 int idx = 0; 2674 2675 if (!capable(CAP_SYS_ADMIN)) 2676 return -EPERM; 2677 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2678 if (vfd->v4l2_dev == NULL) 2679 return -EINVAL; 2680 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2681 if (p->match.addr == idx++) 2682 return v4l2_subdev_call(sd, core, s_register, p); 2683 return -EINVAL; 2684 } 2685 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2686 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2687 return ops->vidioc_s_register(file, fh, p); 2688 return -EINVAL; 2689 #else 2690 return -ENOTTY; 2691 #endif 2692 } 2693 2694 static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops, 2695 struct file *file, void *fh, void *arg) 2696 { 2697 #ifdef CONFIG_VIDEO_ADV_DEBUG 2698 struct video_device *vfd = video_devdata(file); 2699 struct v4l2_dbg_chip_info *p = arg; 2700 struct v4l2_subdev *sd; 2701 int idx = 0; 2702 2703 switch (p->match.type) { 2704 case V4L2_CHIP_MATCH_BRIDGE: 2705 if (ops->vidioc_s_register) 2706 p->flags |= V4L2_CHIP_FL_WRITABLE; 2707 if (ops->vidioc_g_register) 2708 p->flags |= V4L2_CHIP_FL_READABLE; 2709 strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name)); 2710 if (ops->vidioc_g_chip_info) 2711 return ops->vidioc_g_chip_info(file, fh, arg); 2712 if (p->match.addr) 2713 return -EINVAL; 2714 return 0; 2715 2716 case V4L2_CHIP_MATCH_SUBDEV: 2717 if (vfd->v4l2_dev == NULL) 2718 break; 2719 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) { 2720 if (p->match.addr != idx++) 2721 continue; 2722 if (sd->ops->core && sd->ops->core->s_register) 2723 p->flags |= V4L2_CHIP_FL_WRITABLE; 2724 if (sd->ops->core && sd->ops->core->g_register) 2725 p->flags |= V4L2_CHIP_FL_READABLE; 2726 strscpy(p->name, sd->name, sizeof(p->name)); 2727 return 0; 2728 } 2729 break; 2730 } 2731 return -EINVAL; 2732 #else 2733 return -ENOTTY; 2734 #endif 2735 } 2736 2737 static int v4l_dqevent(const struct v4l2_ioctl_ops *ops, 2738 struct file *file, void *fh, void *arg) 2739 { 2740 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK); 2741 } 2742 2743 static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops, 2744 struct file *file, void *fh, void *arg) 2745 { 2746 return ops->vidioc_subscribe_event(fh, arg); 2747 } 2748 2749 static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops, 2750 struct file *file, void *fh, void *arg) 2751 { 2752 return ops->vidioc_unsubscribe_event(fh, arg); 2753 } 2754 2755 static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops, 2756 struct file *file, void *fh, void *arg) 2757 { 2758 struct v4l2_sliced_vbi_cap *p = arg; 2759 int ret = check_fmt(file, p->type); 2760 2761 if (ret) 2762 return ret; 2763 2764 /* Clear up to type, everything after type is zeroed already */ 2765 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type)); 2766 2767 return ops->vidioc_g_sliced_vbi_cap(file, fh, p); 2768 } 2769 2770 static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops, 2771 struct file *file, void *fh, void *arg) 2772 { 2773 struct video_device *vfd = video_devdata(file); 2774 struct v4l2_frequency_band *p = arg; 2775 enum v4l2_tuner_type type; 2776 int err; 2777 2778 if (vfd->vfl_type == VFL_TYPE_SDR) { 2779 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 2780 return -EINVAL; 2781 type = p->type; 2782 } else { 2783 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2784 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2785 if (type != p->type) 2786 return -EINVAL; 2787 } 2788 if (ops->vidioc_enum_freq_bands) { 2789 err = ops->vidioc_enum_freq_bands(file, fh, p); 2790 if (err != -ENOTTY) 2791 return err; 2792 } 2793 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) { 2794 struct v4l2_tuner t = { 2795 .index = p->tuner, 2796 .type = type, 2797 }; 2798 2799 if (p->index) 2800 return -EINVAL; 2801 err = ops->vidioc_g_tuner(file, fh, &t); 2802 if (err) 2803 return err; 2804 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2805 p->rangelow = t.rangelow; 2806 p->rangehigh = t.rangehigh; 2807 p->modulation = (type == V4L2_TUNER_RADIO) ? 2808 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2809 return 0; 2810 } 2811 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) { 2812 struct v4l2_modulator m = { 2813 .index = p->tuner, 2814 }; 2815 2816 if (type != V4L2_TUNER_RADIO) 2817 return -EINVAL; 2818 if (p->index) 2819 return -EINVAL; 2820 err = ops->vidioc_g_modulator(file, fh, &m); 2821 if (err) 2822 return err; 2823 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2824 p->rangelow = m.rangelow; 2825 p->rangehigh = m.rangehigh; 2826 p->modulation = (type == V4L2_TUNER_RADIO) ? 2827 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2828 return 0; 2829 } 2830 return -ENOTTY; 2831 } 2832 2833 struct v4l2_ioctl_info { 2834 unsigned int ioctl; 2835 u32 flags; 2836 const char * const name; 2837 int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file, 2838 void *fh, void *p); 2839 void (*debug)(const void *arg, bool write_only); 2840 }; 2841 2842 /* This control needs a priority check */ 2843 #define INFO_FL_PRIO (1 << 0) 2844 /* This control can be valid if the filehandle passes a control handler. */ 2845 #define INFO_FL_CTRL (1 << 1) 2846 /* Queuing ioctl */ 2847 #define INFO_FL_QUEUE (1 << 2) 2848 /* Always copy back result, even on error */ 2849 #define INFO_FL_ALWAYS_COPY (1 << 3) 2850 /* Zero struct from after the field to the end */ 2851 #define INFO_FL_CLEAR(v4l2_struct, field) \ 2852 ((offsetof(struct v4l2_struct, field) + \ 2853 sizeof_field(struct v4l2_struct, field)) << 16) 2854 #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16) 2855 2856 #define DEFINE_V4L_STUB_FUNC(_vidioc) \ 2857 static int v4l_stub_ ## _vidioc( \ 2858 const struct v4l2_ioctl_ops *ops, \ 2859 struct file *file, void *fh, void *p) \ 2860 { \ 2861 return ops->vidioc_ ## _vidioc(file, fh, p); \ 2862 } 2863 2864 #define IOCTL_INFO(_ioctl, _func, _debug, _flags) \ 2865 [_IOC_NR(_ioctl)] = { \ 2866 .ioctl = _ioctl, \ 2867 .flags = _flags, \ 2868 .name = #_ioctl, \ 2869 .func = _func, \ 2870 .debug = _debug, \ 2871 } 2872 2873 DEFINE_V4L_STUB_FUNC(g_fbuf) 2874 DEFINE_V4L_STUB_FUNC(expbuf) 2875 DEFINE_V4L_STUB_FUNC(g_std) 2876 DEFINE_V4L_STUB_FUNC(g_audio) 2877 DEFINE_V4L_STUB_FUNC(s_audio) 2878 DEFINE_V4L_STUB_FUNC(g_edid) 2879 DEFINE_V4L_STUB_FUNC(s_edid) 2880 DEFINE_V4L_STUB_FUNC(g_audout) 2881 DEFINE_V4L_STUB_FUNC(s_audout) 2882 DEFINE_V4L_STUB_FUNC(g_jpegcomp) 2883 DEFINE_V4L_STUB_FUNC(s_jpegcomp) 2884 DEFINE_V4L_STUB_FUNC(enumaudio) 2885 DEFINE_V4L_STUB_FUNC(enumaudout) 2886 DEFINE_V4L_STUB_FUNC(enum_framesizes) 2887 DEFINE_V4L_STUB_FUNC(enum_frameintervals) 2888 DEFINE_V4L_STUB_FUNC(g_enc_index) 2889 DEFINE_V4L_STUB_FUNC(encoder_cmd) 2890 DEFINE_V4L_STUB_FUNC(try_encoder_cmd) 2891 DEFINE_V4L_STUB_FUNC(decoder_cmd) 2892 DEFINE_V4L_STUB_FUNC(try_decoder_cmd) 2893 DEFINE_V4L_STUB_FUNC(s_dv_timings) 2894 DEFINE_V4L_STUB_FUNC(g_dv_timings) 2895 DEFINE_V4L_STUB_FUNC(enum_dv_timings) 2896 DEFINE_V4L_STUB_FUNC(query_dv_timings) 2897 DEFINE_V4L_STUB_FUNC(dv_timings_cap) 2898 2899 static const struct v4l2_ioctl_info v4l2_ioctls[] = { 2900 IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0), 2901 IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, 0), 2902 IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0), 2903 IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO), 2904 IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2905 IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)), 2906 IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0), 2907 IOCTL_INFO(VIDIOC_S_FBUF, v4l_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO), 2908 IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO), 2909 IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE), 2910 IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)), 2911 IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE), 2912 IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2913 IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2914 IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)), 2915 IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO), 2916 IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0), 2917 IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO), 2918 IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)), 2919 IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)), 2920 IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)), 2921 IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL), 2922 IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)), 2923 IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO), 2924 IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0), 2925 IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO), 2926 IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)), 2927 IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)), 2928 IOCTL_INFO(VIDIOC_G_INPUT, v4l_g_input, v4l_print_u32, 0), 2929 IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO), 2930 IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY), 2931 IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY), 2932 IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_g_output, v4l_print_u32, 0), 2933 IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO), 2934 IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)), 2935 IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0), 2936 IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO), 2937 IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)), 2938 IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO), 2939 IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)), 2940 IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO), 2941 IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)), 2942 IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)), 2943 IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO), 2944 IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)), 2945 IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)), 2946 IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0), 2947 IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO), 2948 IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0), 2949 IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0), 2950 IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)), 2951 IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)), 2952 IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0), 2953 IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO), 2954 IOCTL_INFO(VIDIOC_G_SLICED_VBI_CAP, v4l_g_sliced_vbi_cap, v4l_print_sliced_vbi_cap, INFO_FL_CLEAR(v4l2_sliced_vbi_cap, type)), 2955 IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0), 2956 IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY), 2957 IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL | INFO_FL_ALWAYS_COPY), 2958 IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY), 2959 IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)), 2960 IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)), 2961 IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0), 2962 IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2963 IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2964 IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO), 2965 IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0), 2966 IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0), 2967 IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0), 2968 IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO), 2969 IOCTL_INFO(VIDIOC_S_DV_TIMINGS, v4l_stub_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_dv_timings, bt.flags)), 2970 IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0), 2971 IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0), 2972 IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0), 2973 IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0), 2974 IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2975 IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE), 2976 IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)), 2977 IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY), 2978 IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)), 2979 IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0), 2980 IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)), 2981 IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)), 2982 IOCTL_INFO(VIDIOC_REMOVE_BUFS, v4l_remove_bufs, v4l_print_remove_buffers, INFO_FL_PRIO | INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_remove_buffers, type)), 2983 }; 2984 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) 2985 2986 static bool v4l2_is_known_ioctl(unsigned int cmd) 2987 { 2988 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2989 return false; 2990 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd; 2991 } 2992 2993 static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, 2994 struct v4l2_fh *vfh, unsigned int cmd, 2995 void *arg) 2996 { 2997 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2998 return vdev->lock; 2999 if (vfh && vfh->m2m_ctx && 3000 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) { 3001 if (vfh->m2m_ctx->q_lock) 3002 return vfh->m2m_ctx->q_lock; 3003 } 3004 if (vdev->queue && vdev->queue->lock && 3005 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) 3006 return vdev->queue->lock; 3007 return vdev->lock; 3008 } 3009 3010 /* Common ioctl debug function. This function can be used by 3011 external ioctl messages as well as internal V4L ioctl */ 3012 void v4l_printk_ioctl(const char *prefix, unsigned int cmd) 3013 { 3014 const char *dir, *type; 3015 3016 if (prefix) 3017 printk(KERN_DEBUG "%s: ", prefix); 3018 3019 switch (_IOC_TYPE(cmd)) { 3020 case 'd': 3021 type = "v4l2_int"; 3022 break; 3023 case 'V': 3024 if (!v4l2_is_known_ioctl(cmd)) { 3025 type = "v4l2"; 3026 break; 3027 } 3028 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name); 3029 return; 3030 default: 3031 type = "unknown"; 3032 break; 3033 } 3034 3035 switch (_IOC_DIR(cmd)) { 3036 case _IOC_NONE: dir = "--"; break; 3037 case _IOC_READ: dir = "r-"; break; 3038 case _IOC_WRITE: dir = "-w"; break; 3039 case _IOC_READ | _IOC_WRITE: dir = "rw"; break; 3040 default: dir = "*ERR*"; break; 3041 } 3042 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)", 3043 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd); 3044 } 3045 EXPORT_SYMBOL(v4l_printk_ioctl); 3046 3047 static long __video_do_ioctl(struct file *file, 3048 unsigned int cmd, void *arg) 3049 { 3050 struct video_device *vfd = video_devdata(file); 3051 struct mutex *req_queue_lock = NULL; 3052 struct mutex *lock; /* ioctl serialization mutex */ 3053 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 3054 bool write_only = false; 3055 struct v4l2_ioctl_info default_info; 3056 const struct v4l2_ioctl_info *info; 3057 void *fh = file->private_data; 3058 struct v4l2_fh *vfh = NULL; 3059 int dev_debug = vfd->dev_debug; 3060 long ret = -ENOTTY; 3061 3062 if (ops == NULL) { 3063 pr_warn("%s: has no ioctl_ops.\n", 3064 video_device_node_name(vfd)); 3065 return ret; 3066 } 3067 3068 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 3069 vfh = file->private_data; 3070 3071 /* 3072 * We need to serialize streamon/off with queueing new requests. 3073 * These ioctls may trigger the cancellation of a streaming 3074 * operation, and that should not be mixed with queueing a new 3075 * request at the same time. 3076 */ 3077 if (v4l2_device_supports_requests(vfd->v4l2_dev) && 3078 (cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF)) { 3079 req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex; 3080 3081 if (mutex_lock_interruptible(req_queue_lock)) 3082 return -ERESTARTSYS; 3083 } 3084 3085 lock = v4l2_ioctl_get_lock(vfd, vfh, cmd, arg); 3086 3087 if (lock && mutex_lock_interruptible(lock)) { 3088 if (req_queue_lock) 3089 mutex_unlock(req_queue_lock); 3090 return -ERESTARTSYS; 3091 } 3092 3093 if (!video_is_registered(vfd)) { 3094 ret = -ENODEV; 3095 goto unlock; 3096 } 3097 3098 if (v4l2_is_known_ioctl(cmd)) { 3099 info = &v4l2_ioctls[_IOC_NR(cmd)]; 3100 3101 if (!is_valid_ioctl(vfd, cmd) && 3102 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler)) 3103 goto done; 3104 3105 if (vfh && (info->flags & INFO_FL_PRIO)) { 3106 ret = v4l2_prio_check(vfd->prio, vfh->prio); 3107 if (ret) 3108 goto done; 3109 } 3110 } else { 3111 default_info.ioctl = cmd; 3112 default_info.flags = 0; 3113 default_info.debug = v4l_print_default; 3114 info = &default_info; 3115 } 3116 3117 write_only = _IOC_DIR(cmd) == _IOC_WRITE; 3118 if (info != &default_info) { 3119 ret = info->func(ops, file, fh, arg); 3120 } else if (!ops->vidioc_default) { 3121 ret = -ENOTTY; 3122 } else { 3123 ret = ops->vidioc_default(file, fh, 3124 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0, 3125 cmd, arg); 3126 } 3127 3128 done: 3129 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) { 3130 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) && 3131 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF)) 3132 goto unlock; 3133 3134 v4l_printk_ioctl(video_device_node_name(vfd), cmd); 3135 if (ret < 0) 3136 pr_cont(": error %ld", ret); 3137 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG)) 3138 pr_cont("\n"); 3139 else if (_IOC_DIR(cmd) == _IOC_NONE) 3140 info->debug(arg, write_only); 3141 else { 3142 pr_cont(": "); 3143 info->debug(arg, write_only); 3144 } 3145 } 3146 3147 unlock: 3148 if (lock) 3149 mutex_unlock(lock); 3150 if (req_queue_lock) 3151 mutex_unlock(req_queue_lock); 3152 return ret; 3153 } 3154 3155 static int check_array_args(unsigned int cmd, void *parg, size_t *array_size, 3156 void __user **user_ptr, void ***kernel_ptr) 3157 { 3158 int ret = 0; 3159 3160 switch (cmd) { 3161 case VIDIOC_PREPARE_BUF: 3162 case VIDIOC_QUERYBUF: 3163 case VIDIOC_QBUF: 3164 case VIDIOC_DQBUF: { 3165 struct v4l2_buffer *buf = parg; 3166 3167 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) { 3168 if (buf->length > VIDEO_MAX_PLANES) { 3169 ret = -EINVAL; 3170 break; 3171 } 3172 *user_ptr = (void __user *)buf->m.planes; 3173 *kernel_ptr = (void **)&buf->m.planes; 3174 *array_size = sizeof(struct v4l2_plane) * buf->length; 3175 ret = 1; 3176 } 3177 break; 3178 } 3179 3180 case VIDIOC_G_EDID: 3181 case VIDIOC_S_EDID: { 3182 struct v4l2_edid *edid = parg; 3183 3184 if (edid->blocks) { 3185 if (edid->blocks > 256) { 3186 ret = -EINVAL; 3187 break; 3188 } 3189 *user_ptr = (void __user *)edid->edid; 3190 *kernel_ptr = (void **)&edid->edid; 3191 *array_size = edid->blocks * 128; 3192 ret = 1; 3193 } 3194 break; 3195 } 3196 3197 case VIDIOC_S_EXT_CTRLS: 3198 case VIDIOC_G_EXT_CTRLS: 3199 case VIDIOC_TRY_EXT_CTRLS: { 3200 struct v4l2_ext_controls *ctrls = parg; 3201 3202 if (ctrls->count != 0) { 3203 if (ctrls->count > V4L2_CID_MAX_CTRLS) { 3204 ret = -EINVAL; 3205 break; 3206 } 3207 *user_ptr = (void __user *)ctrls->controls; 3208 *kernel_ptr = (void **)&ctrls->controls; 3209 *array_size = sizeof(struct v4l2_ext_control) 3210 * ctrls->count; 3211 ret = 1; 3212 } 3213 break; 3214 } 3215 3216 case VIDIOC_SUBDEV_G_ROUTING: 3217 case VIDIOC_SUBDEV_S_ROUTING: { 3218 struct v4l2_subdev_routing *routing = parg; 3219 3220 if (routing->len_routes > 256) 3221 return -E2BIG; 3222 3223 *user_ptr = u64_to_user_ptr(routing->routes); 3224 *kernel_ptr = (void **)&routing->routes; 3225 *array_size = sizeof(struct v4l2_subdev_route) 3226 * routing->len_routes; 3227 ret = 1; 3228 break; 3229 } 3230 } 3231 3232 return ret; 3233 } 3234 3235 static unsigned int video_translate_cmd(unsigned int cmd) 3236 { 3237 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3238 switch (cmd) { 3239 case VIDIOC_DQEVENT_TIME32: 3240 return VIDIOC_DQEVENT; 3241 case VIDIOC_QUERYBUF_TIME32: 3242 return VIDIOC_QUERYBUF; 3243 case VIDIOC_QBUF_TIME32: 3244 return VIDIOC_QBUF; 3245 case VIDIOC_DQBUF_TIME32: 3246 return VIDIOC_DQBUF; 3247 case VIDIOC_PREPARE_BUF_TIME32: 3248 return VIDIOC_PREPARE_BUF; 3249 } 3250 #endif 3251 if (in_compat_syscall()) 3252 return v4l2_compat_translate_cmd(cmd); 3253 3254 return cmd; 3255 } 3256 3257 static int video_get_user(void __user *arg, void *parg, 3258 unsigned int real_cmd, unsigned int cmd, 3259 bool *always_copy) 3260 { 3261 unsigned int n = _IOC_SIZE(real_cmd); 3262 int err = 0; 3263 3264 if (!(_IOC_DIR(cmd) & _IOC_WRITE)) { 3265 /* read-only ioctl */ 3266 memset(parg, 0, n); 3267 return 0; 3268 } 3269 3270 /* 3271 * In some cases, only a few fields are used as input, 3272 * i.e. when the app sets "index" and then the driver 3273 * fills in the rest of the structure for the thing 3274 * with that index. We only need to copy up the first 3275 * non-input field. 3276 */ 3277 if (v4l2_is_known_ioctl(real_cmd)) { 3278 u32 flags = v4l2_ioctls[_IOC_NR(real_cmd)].flags; 3279 3280 if (flags & INFO_FL_CLEAR_MASK) 3281 n = (flags & INFO_FL_CLEAR_MASK) >> 16; 3282 *always_copy = flags & INFO_FL_ALWAYS_COPY; 3283 } 3284 3285 if (cmd == real_cmd) { 3286 if (copy_from_user(parg, (void __user *)arg, n)) 3287 err = -EFAULT; 3288 } else if (in_compat_syscall()) { 3289 memset(parg, 0, n); 3290 err = v4l2_compat_get_user(arg, parg, cmd); 3291 } else { 3292 memset(parg, 0, n); 3293 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3294 switch (cmd) { 3295 case VIDIOC_QUERYBUF_TIME32: 3296 case VIDIOC_QBUF_TIME32: 3297 case VIDIOC_DQBUF_TIME32: 3298 case VIDIOC_PREPARE_BUF_TIME32: { 3299 struct v4l2_buffer_time32 vb32; 3300 struct v4l2_buffer *vb = parg; 3301 3302 if (copy_from_user(&vb32, arg, sizeof(vb32))) 3303 return -EFAULT; 3304 3305 *vb = (struct v4l2_buffer) { 3306 .index = vb32.index, 3307 .type = vb32.type, 3308 .bytesused = vb32.bytesused, 3309 .flags = vb32.flags, 3310 .field = vb32.field, 3311 .timestamp.tv_sec = vb32.timestamp.tv_sec, 3312 .timestamp.tv_usec = vb32.timestamp.tv_usec, 3313 .timecode = vb32.timecode, 3314 .sequence = vb32.sequence, 3315 .memory = vb32.memory, 3316 .m.userptr = vb32.m.userptr, 3317 .length = vb32.length, 3318 .request_fd = vb32.request_fd, 3319 }; 3320 break; 3321 } 3322 } 3323 #endif 3324 } 3325 3326 /* zero out anything we don't copy from userspace */ 3327 if (!err && n < _IOC_SIZE(real_cmd)) 3328 memset((u8 *)parg + n, 0, _IOC_SIZE(real_cmd) - n); 3329 return err; 3330 } 3331 3332 static int video_put_user(void __user *arg, void *parg, 3333 unsigned int real_cmd, unsigned int cmd) 3334 { 3335 if (!(_IOC_DIR(cmd) & _IOC_READ)) 3336 return 0; 3337 3338 if (cmd == real_cmd) { 3339 /* Copy results into user buffer */ 3340 if (copy_to_user(arg, parg, _IOC_SIZE(cmd))) 3341 return -EFAULT; 3342 return 0; 3343 } 3344 3345 if (in_compat_syscall()) 3346 return v4l2_compat_put_user(arg, parg, cmd); 3347 3348 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3349 switch (cmd) { 3350 case VIDIOC_DQEVENT_TIME32: { 3351 struct v4l2_event *ev = parg; 3352 struct v4l2_event_time32 ev32; 3353 3354 memset(&ev32, 0, sizeof(ev32)); 3355 3356 ev32.type = ev->type; 3357 ev32.pending = ev->pending; 3358 ev32.sequence = ev->sequence; 3359 ev32.timestamp.tv_sec = ev->timestamp.tv_sec; 3360 ev32.timestamp.tv_nsec = ev->timestamp.tv_nsec; 3361 ev32.id = ev->id; 3362 3363 memcpy(&ev32.u, &ev->u, sizeof(ev->u)); 3364 memcpy(&ev32.reserved, &ev->reserved, sizeof(ev->reserved)); 3365 3366 if (copy_to_user(arg, &ev32, sizeof(ev32))) 3367 return -EFAULT; 3368 break; 3369 } 3370 case VIDIOC_QUERYBUF_TIME32: 3371 case VIDIOC_QBUF_TIME32: 3372 case VIDIOC_DQBUF_TIME32: 3373 case VIDIOC_PREPARE_BUF_TIME32: { 3374 struct v4l2_buffer *vb = parg; 3375 struct v4l2_buffer_time32 vb32; 3376 3377 memset(&vb32, 0, sizeof(vb32)); 3378 3379 vb32.index = vb->index; 3380 vb32.type = vb->type; 3381 vb32.bytesused = vb->bytesused; 3382 vb32.flags = vb->flags; 3383 vb32.field = vb->field; 3384 vb32.timestamp.tv_sec = vb->timestamp.tv_sec; 3385 vb32.timestamp.tv_usec = vb->timestamp.tv_usec; 3386 vb32.timecode = vb->timecode; 3387 vb32.sequence = vb->sequence; 3388 vb32.memory = vb->memory; 3389 vb32.m.userptr = vb->m.userptr; 3390 vb32.length = vb->length; 3391 vb32.request_fd = vb->request_fd; 3392 3393 if (copy_to_user(arg, &vb32, sizeof(vb32))) 3394 return -EFAULT; 3395 break; 3396 } 3397 } 3398 #endif 3399 3400 return 0; 3401 } 3402 3403 long 3404 video_usercopy(struct file *file, unsigned int orig_cmd, unsigned long arg, 3405 v4l2_kioctl func) 3406 { 3407 char sbuf[128]; 3408 void *mbuf = NULL, *array_buf = NULL; 3409 void *parg = (void *)arg; 3410 long err = -EINVAL; 3411 bool has_array_args; 3412 bool always_copy = false; 3413 size_t array_size = 0; 3414 void __user *user_ptr = NULL; 3415 void **kernel_ptr = NULL; 3416 unsigned int cmd = video_translate_cmd(orig_cmd); 3417 const size_t ioc_size = _IOC_SIZE(cmd); 3418 3419 /* Copy arguments into temp kernel buffer */ 3420 if (_IOC_DIR(cmd) != _IOC_NONE) { 3421 if (ioc_size <= sizeof(sbuf)) { 3422 parg = sbuf; 3423 } else { 3424 /* too big to allocate from stack */ 3425 mbuf = kmalloc(ioc_size, GFP_KERNEL); 3426 if (NULL == mbuf) 3427 return -ENOMEM; 3428 parg = mbuf; 3429 } 3430 3431 err = video_get_user((void __user *)arg, parg, cmd, 3432 orig_cmd, &always_copy); 3433 if (err) 3434 goto out; 3435 } 3436 3437 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr); 3438 if (err < 0) 3439 goto out; 3440 has_array_args = err; 3441 3442 if (has_array_args) { 3443 array_buf = kvmalloc(array_size, GFP_KERNEL); 3444 err = -ENOMEM; 3445 if (array_buf == NULL) 3446 goto out; 3447 if (in_compat_syscall()) 3448 err = v4l2_compat_get_array_args(file, array_buf, 3449 user_ptr, array_size, 3450 orig_cmd, parg); 3451 else 3452 err = copy_from_user(array_buf, user_ptr, array_size) ? 3453 -EFAULT : 0; 3454 if (err) 3455 goto out; 3456 *kernel_ptr = array_buf; 3457 } 3458 3459 /* Handles IOCTL */ 3460 err = func(file, cmd, parg); 3461 if (err == -ENOTTY || err == -ENOIOCTLCMD) { 3462 err = -ENOTTY; 3463 goto out; 3464 } 3465 3466 if (err == 0) { 3467 if (cmd == VIDIOC_DQBUF) 3468 trace_v4l2_dqbuf(video_devdata(file)->minor, parg); 3469 else if (cmd == VIDIOC_QBUF) 3470 trace_v4l2_qbuf(video_devdata(file)->minor, parg); 3471 } 3472 3473 /* 3474 * Some ioctls can return an error, but still have valid 3475 * results that must be returned. 3476 * 3477 * FIXME: subdev IOCTLS are partially handled here and partially in 3478 * v4l2-subdev.c and the 'always_copy' flag can only be set for IOCTLS 3479 * defined here as part of the 'v4l2_ioctls' array. As 3480 * VIDIOC_SUBDEV_[GS]_ROUTING needs to return results to applications 3481 * even in case of failure, but it is not defined here as part of the 3482 * 'v4l2_ioctls' array, insert an ad-hoc check to address that. 3483 */ 3484 if (cmd == VIDIOC_SUBDEV_G_ROUTING || cmd == VIDIOC_SUBDEV_S_ROUTING) 3485 always_copy = true; 3486 3487 if (err < 0 && !always_copy) 3488 goto out; 3489 3490 if (has_array_args) { 3491 *kernel_ptr = (void __force *)user_ptr; 3492 if (in_compat_syscall()) { 3493 int put_err; 3494 3495 put_err = v4l2_compat_put_array_args(file, user_ptr, 3496 array_buf, 3497 array_size, 3498 orig_cmd, parg); 3499 if (put_err) 3500 err = put_err; 3501 } else if (copy_to_user(user_ptr, array_buf, array_size)) { 3502 err = -EFAULT; 3503 } 3504 } 3505 3506 if (video_put_user((void __user *)arg, parg, cmd, orig_cmd)) 3507 err = -EFAULT; 3508 out: 3509 kvfree(array_buf); 3510 kfree(mbuf); 3511 return err; 3512 } 3513 3514 long video_ioctl2(struct file *file, 3515 unsigned int cmd, unsigned long arg) 3516 { 3517 return video_usercopy(file, cmd, arg, __video_do_ioctl); 3518 } 3519 EXPORT_SYMBOL(video_ioctl2); 3520