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 /* Note: we can't print the clip list here since the clips 314 * pointer is a userspace pointer, not a kernelspace 315 * pointer. */ 316 pr_cont(", wxh=%dx%d, x,y=%d,%d, field=%s, chromakey=0x%08x, clipcount=%u, clips=%p, bitmap=%p, global_alpha=0x%02x\n", 317 win->w.width, win->w.height, win->w.left, win->w.top, 318 prt_names(win->field, v4l2_field_names), 319 win->chromakey, win->clipcount, win->clips, 320 win->bitmap, win->global_alpha); 321 break; 322 case V4L2_BUF_TYPE_VBI_CAPTURE: 323 case V4L2_BUF_TYPE_VBI_OUTPUT: 324 vbi = &p->fmt.vbi; 325 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%p4cc, start=%u,%u, count=%u,%u\n", 326 vbi->sampling_rate, vbi->offset, 327 vbi->samples_per_line, &vbi->sample_format, 328 vbi->start[0], vbi->start[1], 329 vbi->count[0], vbi->count[1]); 330 break; 331 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 332 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 333 sliced = &p->fmt.sliced; 334 pr_cont(", service_set=0x%08x, io_size=%d\n", 335 sliced->service_set, sliced->io_size); 336 for (i = 0; i < 24; i++) 337 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, 338 sliced->service_lines[0][i], 339 sliced->service_lines[1][i]); 340 break; 341 case V4L2_BUF_TYPE_SDR_CAPTURE: 342 case V4L2_BUF_TYPE_SDR_OUTPUT: 343 pixelformat = p->fmt.sdr.pixelformat; 344 pr_cont(", pixelformat=%p4cc\n", &pixelformat); 345 break; 346 case V4L2_BUF_TYPE_META_CAPTURE: 347 case V4L2_BUF_TYPE_META_OUTPUT: 348 meta = &p->fmt.meta; 349 pixelformat = meta->dataformat; 350 pr_cont(", dataformat=%p4cc, buffersize=%u\n", 351 &pixelformat, meta->buffersize); 352 break; 353 } 354 } 355 356 static void v4l_print_framebuffer(const void *arg, bool write_only) 357 { 358 const struct v4l2_framebuffer *p = arg; 359 360 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, height=%u, pixelformat=%p4cc, bytesperline=%u, sizeimage=%u, colorspace=%d\n", 361 p->capability, p->flags, p->base, p->fmt.width, p->fmt.height, 362 &p->fmt.pixelformat, p->fmt.bytesperline, p->fmt.sizeimage, 363 p->fmt.colorspace); 364 } 365 366 static void v4l_print_buftype(const void *arg, bool write_only) 367 { 368 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names)); 369 } 370 371 static void v4l_print_modulator(const void *arg, bool write_only) 372 { 373 const struct v4l2_modulator *p = arg; 374 375 if (write_only) 376 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans); 377 else 378 pr_cont("index=%u, name=%.*s, capability=0x%x, rangelow=%u, rangehigh=%u, txsubchans=0x%x\n", 379 p->index, (int)sizeof(p->name), p->name, p->capability, 380 p->rangelow, p->rangehigh, p->txsubchans); 381 } 382 383 static void v4l_print_tuner(const void *arg, bool write_only) 384 { 385 const struct v4l2_tuner *p = arg; 386 387 if (write_only) 388 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode); 389 else 390 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", 391 p->index, (int)sizeof(p->name), p->name, p->type, 392 p->capability, p->rangelow, 393 p->rangehigh, p->signal, p->afc, 394 p->rxsubchans, p->audmode); 395 } 396 397 static void v4l_print_frequency(const void *arg, bool write_only) 398 { 399 const struct v4l2_frequency *p = arg; 400 401 pr_cont("tuner=%u, type=%u, frequency=%u\n", 402 p->tuner, p->type, p->frequency); 403 } 404 405 static void v4l_print_standard(const void *arg, bool write_only) 406 { 407 const struct v4l2_standard *p = arg; 408 409 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, framelines=%u\n", 410 p->index, 411 (unsigned long long)p->id, (int)sizeof(p->name), p->name, 412 p->frameperiod.numerator, 413 p->frameperiod.denominator, 414 p->framelines); 415 } 416 417 static void v4l_print_std(const void *arg, bool write_only) 418 { 419 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg); 420 } 421 422 static void v4l_print_hw_freq_seek(const void *arg, bool write_only) 423 { 424 const struct v4l2_hw_freq_seek *p = arg; 425 426 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, rangelow=%u, rangehigh=%u\n", 427 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing, 428 p->rangelow, p->rangehigh); 429 } 430 431 static void v4l_print_requestbuffers(const void *arg, bool write_only) 432 { 433 const struct v4l2_requestbuffers *p = arg; 434 435 pr_cont("count=%d, type=%s, memory=%s\n", 436 p->count, 437 prt_names(p->type, v4l2_type_names), 438 prt_names(p->memory, v4l2_memory_names)); 439 } 440 441 static void v4l_print_buffer(const void *arg, bool write_only) 442 { 443 const struct v4l2_buffer *p = arg; 444 const struct v4l2_timecode *tc = &p->timecode; 445 const struct v4l2_plane *plane; 446 int i; 447 448 pr_cont("%02d:%02d:%02d.%06ld index=%d, type=%s, request_fd=%d, flags=0x%08x, field=%s, sequence=%d, memory=%s", 449 (int)p->timestamp.tv_sec / 3600, 450 ((int)p->timestamp.tv_sec / 60) % 60, 451 ((int)p->timestamp.tv_sec % 60), 452 (long)p->timestamp.tv_usec, 453 p->index, 454 prt_names(p->type, v4l2_type_names), p->request_fd, 455 p->flags, prt_names(p->field, v4l2_field_names), 456 p->sequence, prt_names(p->memory, v4l2_memory_names)); 457 458 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) { 459 pr_cont("\n"); 460 for (i = 0; i < p->length; ++i) { 461 plane = &p->m.planes[i]; 462 printk(KERN_DEBUG 463 "plane %d: bytesused=%d, data_offset=0x%08x, offset/userptr=0x%lx, length=%d\n", 464 i, plane->bytesused, plane->data_offset, 465 plane->m.userptr, plane->length); 466 } 467 } else { 468 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n", 469 p->bytesused, p->m.userptr, p->length); 470 } 471 472 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, flags=0x%08x, frames=%d, userbits=0x%08x\n", 473 tc->hours, tc->minutes, tc->seconds, 474 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits); 475 } 476 477 static void v4l_print_exportbuffer(const void *arg, bool write_only) 478 { 479 const struct v4l2_exportbuffer *p = arg; 480 481 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n", 482 p->fd, prt_names(p->type, v4l2_type_names), 483 p->index, p->plane, p->flags); 484 } 485 486 static void v4l_print_create_buffers(const void *arg, bool write_only) 487 { 488 const struct v4l2_create_buffers *p = arg; 489 490 pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, ", 491 p->index, p->count, prt_names(p->memory, v4l2_memory_names), 492 p->capabilities); 493 v4l_print_format(&p->format, write_only); 494 } 495 496 static void v4l_print_streamparm(const void *arg, bool write_only) 497 { 498 const struct v4l2_streamparm *p = arg; 499 500 pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); 501 502 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 503 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) { 504 const struct v4l2_captureparm *c = &p->parm.capture; 505 506 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, extendedmode=%d, readbuffers=%d\n", 507 c->capability, c->capturemode, 508 c->timeperframe.numerator, c->timeperframe.denominator, 509 c->extendedmode, c->readbuffers); 510 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT || 511 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { 512 const struct v4l2_outputparm *c = &p->parm.output; 513 514 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, extendedmode=%d, writebuffers=%d\n", 515 c->capability, c->outputmode, 516 c->timeperframe.numerator, c->timeperframe.denominator, 517 c->extendedmode, c->writebuffers); 518 } else { 519 pr_cont("\n"); 520 } 521 } 522 523 static void v4l_print_queryctrl(const void *arg, bool write_only) 524 { 525 const struct v4l2_queryctrl *p = arg; 526 527 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, step=%d, default=%d, flags=0x%08x\n", 528 p->id, p->type, (int)sizeof(p->name), p->name, 529 p->minimum, p->maximum, 530 p->step, p->default_value, p->flags); 531 } 532 533 static void v4l_print_query_ext_ctrl(const void *arg, bool write_only) 534 { 535 const struct v4l2_query_ext_ctrl *p = arg; 536 537 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", 538 p->id, p->type, (int)sizeof(p->name), p->name, 539 p->minimum, p->maximum, 540 p->step, p->default_value, p->flags, 541 p->elem_size, p->elems, p->nr_of_dims, 542 p->dims[0], p->dims[1], p->dims[2], p->dims[3]); 543 } 544 545 static void v4l_print_querymenu(const void *arg, bool write_only) 546 { 547 const struct v4l2_querymenu *p = arg; 548 549 pr_cont("id=0x%x, index=%d\n", p->id, p->index); 550 } 551 552 static void v4l_print_control(const void *arg, bool write_only) 553 { 554 const struct v4l2_control *p = arg; 555 const char *name = v4l2_ctrl_get_name(p->id); 556 557 if (name) 558 pr_cont("name=%s, ", name); 559 pr_cont("id=0x%x, value=%d\n", p->id, p->value); 560 } 561 562 static void v4l_print_ext_controls(const void *arg, bool write_only) 563 { 564 const struct v4l2_ext_controls *p = arg; 565 int i; 566 567 pr_cont("which=0x%x, count=%d, error_idx=%d, request_fd=%d", 568 p->which, p->count, p->error_idx, p->request_fd); 569 for (i = 0; i < p->count; i++) { 570 unsigned int id = p->controls[i].id; 571 const char *name = v4l2_ctrl_get_name(id); 572 573 if (name) 574 pr_cont(", name=%s", name); 575 if (!p->controls[i].size) 576 pr_cont(", id/val=0x%x/0x%x", id, p->controls[i].value); 577 else 578 pr_cont(", id/size=0x%x/%u", id, p->controls[i].size); 579 } 580 pr_cont("\n"); 581 } 582 583 static void v4l_print_cropcap(const void *arg, bool write_only) 584 { 585 const struct v4l2_cropcap *p = arg; 586 587 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, defrect wxh=%dx%d, x,y=%d,%d, pixelaspect %d/%d\n", 588 prt_names(p->type, v4l2_type_names), 589 p->bounds.width, p->bounds.height, 590 p->bounds.left, p->bounds.top, 591 p->defrect.width, p->defrect.height, 592 p->defrect.left, p->defrect.top, 593 p->pixelaspect.numerator, p->pixelaspect.denominator); 594 } 595 596 static void v4l_print_crop(const void *arg, bool write_only) 597 { 598 const struct v4l2_crop *p = arg; 599 600 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n", 601 prt_names(p->type, v4l2_type_names), 602 p->c.width, p->c.height, 603 p->c.left, p->c.top); 604 } 605 606 static void v4l_print_selection(const void *arg, bool write_only) 607 { 608 const struct v4l2_selection *p = arg; 609 610 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n", 611 prt_names(p->type, v4l2_type_names), 612 p->target, p->flags, 613 p->r.width, p->r.height, p->r.left, p->r.top); 614 } 615 616 static void v4l_print_jpegcompression(const void *arg, bool write_only) 617 { 618 const struct v4l2_jpegcompression *p = arg; 619 620 pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n", 621 p->quality, p->APPn, p->APP_len, 622 p->COM_len, p->jpeg_markers); 623 } 624 625 static void v4l_print_enc_idx(const void *arg, bool write_only) 626 { 627 const struct v4l2_enc_idx *p = arg; 628 629 pr_cont("entries=%d, entries_cap=%d\n", 630 p->entries, p->entries_cap); 631 } 632 633 static void v4l_print_encoder_cmd(const void *arg, bool write_only) 634 { 635 const struct v4l2_encoder_cmd *p = arg; 636 637 pr_cont("cmd=%d, flags=0x%x\n", 638 p->cmd, p->flags); 639 } 640 641 static void v4l_print_decoder_cmd(const void *arg, bool write_only) 642 { 643 const struct v4l2_decoder_cmd *p = arg; 644 645 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags); 646 647 if (p->cmd == V4L2_DEC_CMD_START) 648 pr_info("speed=%d, format=%u\n", 649 p->start.speed, p->start.format); 650 else if (p->cmd == V4L2_DEC_CMD_STOP) 651 pr_info("pts=%llu\n", p->stop.pts); 652 } 653 654 static void v4l_print_dbg_chip_info(const void *arg, bool write_only) 655 { 656 const struct v4l2_dbg_chip_info *p = arg; 657 658 pr_cont("type=%u, ", p->match.type); 659 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 660 pr_cont("name=%.*s, ", 661 (int)sizeof(p->match.name), p->match.name); 662 else 663 pr_cont("addr=%u, ", p->match.addr); 664 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name); 665 } 666 667 static void v4l_print_dbg_register(const void *arg, bool write_only) 668 { 669 const struct v4l2_dbg_register *p = arg; 670 671 pr_cont("type=%u, ", p->match.type); 672 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 673 pr_cont("name=%.*s, ", 674 (int)sizeof(p->match.name), p->match.name); 675 else 676 pr_cont("addr=%u, ", p->match.addr); 677 pr_cont("reg=0x%llx, val=0x%llx\n", 678 p->reg, p->val); 679 } 680 681 static void v4l_print_dv_timings(const void *arg, bool write_only) 682 { 683 const struct v4l2_dv_timings *p = arg; 684 685 switch (p->type) { 686 case V4L2_DV_BT_656_1120: 687 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", 688 p->bt.interlaced, p->bt.pixelclock, 689 p->bt.width, p->bt.height, 690 p->bt.polarities, p->bt.hfrontporch, 691 p->bt.hsync, p->bt.hbackporch, 692 p->bt.vfrontporch, p->bt.vsync, 693 p->bt.vbackporch, p->bt.il_vfrontporch, 694 p->bt.il_vsync, p->bt.il_vbackporch, 695 p->bt.standards, p->bt.flags); 696 break; 697 default: 698 pr_cont("type=%d\n", p->type); 699 break; 700 } 701 } 702 703 static void v4l_print_enum_dv_timings(const void *arg, bool write_only) 704 { 705 const struct v4l2_enum_dv_timings *p = arg; 706 707 pr_cont("index=%u, ", p->index); 708 v4l_print_dv_timings(&p->timings, write_only); 709 } 710 711 static void v4l_print_dv_timings_cap(const void *arg, bool write_only) 712 { 713 const struct v4l2_dv_timings_cap *p = arg; 714 715 switch (p->type) { 716 case V4L2_DV_BT_656_1120: 717 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n", 718 p->bt.min_width, p->bt.max_width, 719 p->bt.min_height, p->bt.max_height, 720 p->bt.min_pixelclock, p->bt.max_pixelclock, 721 p->bt.standards, p->bt.capabilities); 722 break; 723 default: 724 pr_cont("type=%u\n", p->type); 725 break; 726 } 727 } 728 729 static void v4l_print_frmsizeenum(const void *arg, bool write_only) 730 { 731 const struct v4l2_frmsizeenum *p = arg; 732 733 pr_cont("index=%u, pixelformat=%p4cc, type=%u", 734 p->index, &p->pixel_format, p->type); 735 switch (p->type) { 736 case V4L2_FRMSIZE_TYPE_DISCRETE: 737 pr_cont(", wxh=%ux%u\n", 738 p->discrete.width, p->discrete.height); 739 break; 740 case V4L2_FRMSIZE_TYPE_STEPWISE: 741 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n", 742 p->stepwise.min_width, 743 p->stepwise.min_height, 744 p->stepwise.max_width, 745 p->stepwise.max_height, 746 p->stepwise.step_width, 747 p->stepwise.step_height); 748 break; 749 case V4L2_FRMSIZE_TYPE_CONTINUOUS: 750 default: 751 pr_cont("\n"); 752 break; 753 } 754 } 755 756 static void v4l_print_frmivalenum(const void *arg, bool write_only) 757 { 758 const struct v4l2_frmivalenum *p = arg; 759 760 pr_cont("index=%u, pixelformat=%p4cc, wxh=%ux%u, type=%u", 761 p->index, &p->pixel_format, p->width, p->height, p->type); 762 switch (p->type) { 763 case V4L2_FRMIVAL_TYPE_DISCRETE: 764 pr_cont(", fps=%d/%d\n", 765 p->discrete.numerator, 766 p->discrete.denominator); 767 break; 768 case V4L2_FRMIVAL_TYPE_STEPWISE: 769 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n", 770 p->stepwise.min.numerator, 771 p->stepwise.min.denominator, 772 p->stepwise.max.numerator, 773 p->stepwise.max.denominator, 774 p->stepwise.step.numerator, 775 p->stepwise.step.denominator); 776 break; 777 case V4L2_FRMIVAL_TYPE_CONTINUOUS: 778 default: 779 pr_cont("\n"); 780 break; 781 } 782 } 783 784 static void v4l_print_event(const void *arg, bool write_only) 785 { 786 const struct v4l2_event *p = arg; 787 const struct v4l2_event_ctrl *c; 788 789 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%llu.%9.9llu\n", 790 p->type, p->pending, p->sequence, p->id, 791 p->timestamp.tv_sec, p->timestamp.tv_nsec); 792 switch (p->type) { 793 case V4L2_EVENT_VSYNC: 794 printk(KERN_DEBUG "field=%s\n", 795 prt_names(p->u.vsync.field, v4l2_field_names)); 796 break; 797 case V4L2_EVENT_CTRL: 798 c = &p->u.ctrl; 799 printk(KERN_DEBUG "changes=0x%x, type=%u, ", 800 c->changes, c->type); 801 if (c->type == V4L2_CTRL_TYPE_INTEGER64) 802 pr_cont("value64=%lld, ", c->value64); 803 else 804 pr_cont("value=%d, ", c->value); 805 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n", 806 c->flags, c->minimum, c->maximum, 807 c->step, c->default_value); 808 break; 809 case V4L2_EVENT_FRAME_SYNC: 810 pr_cont("frame_sequence=%u\n", 811 p->u.frame_sync.frame_sequence); 812 break; 813 } 814 } 815 816 static void v4l_print_event_subscription(const void *arg, bool write_only) 817 { 818 const struct v4l2_event_subscription *p = arg; 819 820 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n", 821 p->type, p->id, p->flags); 822 } 823 824 static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only) 825 { 826 const struct v4l2_sliced_vbi_cap *p = arg; 827 int i; 828 829 pr_cont("type=%s, service_set=0x%08x\n", 830 prt_names(p->type, v4l2_type_names), p->service_set); 831 for (i = 0; i < 24; i++) 832 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, 833 p->service_lines[0][i], 834 p->service_lines[1][i]); 835 } 836 837 static void v4l_print_freq_band(const void *arg, bool write_only) 838 { 839 const struct v4l2_frequency_band *p = arg; 840 841 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n", 842 p->tuner, p->type, p->index, 843 p->capability, p->rangelow, 844 p->rangehigh, p->modulation); 845 } 846 847 static void v4l_print_edid(const void *arg, bool write_only) 848 { 849 const struct v4l2_edid *p = arg; 850 851 pr_cont("pad=%u, start_block=%u, blocks=%u\n", 852 p->pad, p->start_block, p->blocks); 853 } 854 855 static void v4l_print_u32(const void *arg, bool write_only) 856 { 857 pr_cont("value=%u\n", *(const u32 *)arg); 858 } 859 860 static void v4l_print_newline(const void *arg, bool write_only) 861 { 862 pr_cont("\n"); 863 } 864 865 static void v4l_print_default(const void *arg, bool write_only) 866 { 867 pr_cont("driver-specific ioctl\n"); 868 } 869 870 static bool check_ext_ctrls(struct v4l2_ext_controls *c, unsigned long ioctl) 871 { 872 __u32 i; 873 874 /* zero the reserved fields */ 875 c->reserved[0] = 0; 876 for (i = 0; i < c->count; i++) 877 c->controls[i].reserved2[0] = 0; 878 879 switch (c->which) { 880 case V4L2_CID_PRIVATE_BASE: 881 /* 882 * V4L2_CID_PRIVATE_BASE cannot be used as control class 883 * when using extended controls. 884 * Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL 885 * is it allowed for backwards compatibility. 886 */ 887 if (ioctl == VIDIOC_G_CTRL || ioctl == VIDIOC_S_CTRL) 888 return false; 889 break; 890 case V4L2_CTRL_WHICH_DEF_VAL: 891 /* Default value cannot be changed */ 892 if (ioctl == VIDIOC_S_EXT_CTRLS || 893 ioctl == VIDIOC_TRY_EXT_CTRLS) { 894 c->error_idx = c->count; 895 return false; 896 } 897 return true; 898 case V4L2_CTRL_WHICH_CUR_VAL: 899 return true; 900 case V4L2_CTRL_WHICH_REQUEST_VAL: 901 c->error_idx = c->count; 902 return false; 903 } 904 905 /* Check that all controls are from the same control class. */ 906 for (i = 0; i < c->count; i++) { 907 if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) { 908 c->error_idx = ioctl == VIDIOC_TRY_EXT_CTRLS ? i : 909 c->count; 910 return false; 911 } 912 } 913 return true; 914 } 915 916 static int check_fmt(struct file *file, enum v4l2_buf_type type) 917 { 918 const u32 vid_caps = V4L2_CAP_VIDEO_CAPTURE | 919 V4L2_CAP_VIDEO_CAPTURE_MPLANE | 920 V4L2_CAP_VIDEO_OUTPUT | 921 V4L2_CAP_VIDEO_OUTPUT_MPLANE | 922 V4L2_CAP_VIDEO_M2M | V4L2_CAP_VIDEO_M2M_MPLANE; 923 const u32 meta_caps = V4L2_CAP_META_CAPTURE | 924 V4L2_CAP_META_OUTPUT; 925 struct video_device *vfd = video_devdata(file); 926 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 927 bool is_vid = vfd->vfl_type == VFL_TYPE_VIDEO && 928 (vfd->device_caps & vid_caps); 929 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI; 930 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; 931 bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; 932 bool is_meta = vfd->vfl_type == VFL_TYPE_VIDEO && 933 (vfd->device_caps & meta_caps); 934 bool is_rx = vfd->vfl_dir != VFL_DIR_TX; 935 bool is_tx = vfd->vfl_dir != VFL_DIR_RX; 936 937 if (ops == NULL) 938 return -EINVAL; 939 940 switch (type) { 941 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 942 if ((is_vid || is_tch) && is_rx && 943 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane)) 944 return 0; 945 break; 946 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 947 if ((is_vid || is_tch) && is_rx && ops->vidioc_g_fmt_vid_cap_mplane) 948 return 0; 949 break; 950 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 951 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay) 952 return 0; 953 break; 954 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 955 if (is_vid && is_tx && 956 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane)) 957 return 0; 958 break; 959 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 960 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane) 961 return 0; 962 break; 963 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 964 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay) 965 return 0; 966 break; 967 case V4L2_BUF_TYPE_VBI_CAPTURE: 968 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap) 969 return 0; 970 break; 971 case V4L2_BUF_TYPE_VBI_OUTPUT: 972 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out) 973 return 0; 974 break; 975 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 976 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap) 977 return 0; 978 break; 979 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 980 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out) 981 return 0; 982 break; 983 case V4L2_BUF_TYPE_SDR_CAPTURE: 984 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap) 985 return 0; 986 break; 987 case V4L2_BUF_TYPE_SDR_OUTPUT: 988 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out) 989 return 0; 990 break; 991 case V4L2_BUF_TYPE_META_CAPTURE: 992 if (is_meta && is_rx && ops->vidioc_g_fmt_meta_cap) 993 return 0; 994 break; 995 case V4L2_BUF_TYPE_META_OUTPUT: 996 if (is_meta && is_tx && ops->vidioc_g_fmt_meta_out) 997 return 0; 998 break; 999 default: 1000 break; 1001 } 1002 return -EINVAL; 1003 } 1004 1005 static void v4l_sanitize_colorspace(u32 pixelformat, u32 *colorspace, 1006 u32 *encoding, u32 *quantization, 1007 u32 *xfer_func) 1008 { 1009 bool is_hsv = pixelformat == V4L2_PIX_FMT_HSV24 || 1010 pixelformat == V4L2_PIX_FMT_HSV32; 1011 1012 if (!v4l2_is_colorspace_valid(*colorspace)) { 1013 *colorspace = V4L2_COLORSPACE_DEFAULT; 1014 *encoding = V4L2_YCBCR_ENC_DEFAULT; 1015 *quantization = V4L2_QUANTIZATION_DEFAULT; 1016 *xfer_func = V4L2_XFER_FUNC_DEFAULT; 1017 } 1018 1019 if ((!is_hsv && !v4l2_is_ycbcr_enc_valid(*encoding)) || 1020 (is_hsv && !v4l2_is_hsv_enc_valid(*encoding))) 1021 *encoding = V4L2_YCBCR_ENC_DEFAULT; 1022 1023 if (!v4l2_is_quant_valid(*quantization)) 1024 *quantization = V4L2_QUANTIZATION_DEFAULT; 1025 1026 if (!v4l2_is_xfer_func_valid(*xfer_func)) 1027 *xfer_func = V4L2_XFER_FUNC_DEFAULT; 1028 } 1029 1030 static void v4l_sanitize_format(struct v4l2_format *fmt) 1031 { 1032 unsigned int offset; 1033 1034 /* Make sure num_planes is not bogus */ 1035 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE || 1036 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 1037 fmt->fmt.pix_mp.num_planes = min_t(u32, fmt->fmt.pix_mp.num_planes, 1038 VIDEO_MAX_PLANES); 1039 1040 /* 1041 * The v4l2_pix_format structure has been extended with fields that were 1042 * not previously required to be set to zero by applications. The priv 1043 * field, when set to a magic value, indicates that the extended fields 1044 * are valid. Otherwise they will contain undefined values. To simplify 1045 * the API towards drivers zero the extended fields and set the priv 1046 * field to the magic value when the extended pixel format structure 1047 * isn't used by applications. 1048 */ 1049 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 1050 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { 1051 if (fmt->fmt.pix.priv != V4L2_PIX_FMT_PRIV_MAGIC) { 1052 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1053 1054 offset = offsetof(struct v4l2_pix_format, priv) 1055 + sizeof(fmt->fmt.pix.priv); 1056 memset(((void *)&fmt->fmt.pix) + offset, 0, 1057 sizeof(fmt->fmt.pix) - offset); 1058 } 1059 } 1060 1061 /* Replace invalid colorspace values with defaults. */ 1062 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 1063 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { 1064 v4l_sanitize_colorspace(fmt->fmt.pix.pixelformat, 1065 &fmt->fmt.pix.colorspace, 1066 &fmt->fmt.pix.ycbcr_enc, 1067 &fmt->fmt.pix.quantization, 1068 &fmt->fmt.pix.xfer_func); 1069 } else if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE || 1070 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { 1071 u32 ycbcr_enc = fmt->fmt.pix_mp.ycbcr_enc; 1072 u32 quantization = fmt->fmt.pix_mp.quantization; 1073 u32 xfer_func = fmt->fmt.pix_mp.xfer_func; 1074 1075 v4l_sanitize_colorspace(fmt->fmt.pix_mp.pixelformat, 1076 &fmt->fmt.pix_mp.colorspace, &ycbcr_enc, 1077 &quantization, &xfer_func); 1078 1079 fmt->fmt.pix_mp.ycbcr_enc = ycbcr_enc; 1080 fmt->fmt.pix_mp.quantization = quantization; 1081 fmt->fmt.pix_mp.xfer_func = xfer_func; 1082 } 1083 } 1084 1085 static int v4l_querycap(const struct v4l2_ioctl_ops *ops, 1086 struct file *file, void *fh, void *arg) 1087 { 1088 struct v4l2_capability *cap = (struct v4l2_capability *)arg; 1089 struct video_device *vfd = video_devdata(file); 1090 int ret; 1091 1092 cap->version = LINUX_VERSION_CODE; 1093 cap->device_caps = vfd->device_caps; 1094 cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS; 1095 1096 media_set_bus_info(cap->bus_info, sizeof(cap->bus_info), 1097 vfd->dev_parent); 1098 1099 ret = ops->vidioc_querycap(file, fh, cap); 1100 1101 /* 1102 * Drivers must not change device_caps, so check for this and 1103 * warn if this happened. 1104 */ 1105 WARN_ON(cap->device_caps != vfd->device_caps); 1106 /* 1107 * Check that capabilities is a superset of 1108 * vfd->device_caps | V4L2_CAP_DEVICE_CAPS 1109 */ 1110 WARN_ON((cap->capabilities & 1111 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)) != 1112 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)); 1113 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT; 1114 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT; 1115 1116 return ret; 1117 } 1118 1119 static int v4l_g_input(const struct v4l2_ioctl_ops *ops, 1120 struct file *file, void *fh, void *arg) 1121 { 1122 struct video_device *vfd = video_devdata(file); 1123 1124 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1125 *(int *)arg = 0; 1126 return 0; 1127 } 1128 1129 return ops->vidioc_g_input(file, fh, arg); 1130 } 1131 1132 static int v4l_g_output(const struct v4l2_ioctl_ops *ops, 1133 struct file *file, void *fh, void *arg) 1134 { 1135 struct video_device *vfd = video_devdata(file); 1136 1137 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1138 *(int *)arg = 0; 1139 return 0; 1140 } 1141 1142 return ops->vidioc_g_output(file, fh, arg); 1143 } 1144 1145 static int v4l_s_input(const struct v4l2_ioctl_ops *ops, 1146 struct file *file, void *fh, void *arg) 1147 { 1148 struct video_device *vfd = video_devdata(file); 1149 int ret; 1150 1151 ret = v4l_enable_media_source(vfd); 1152 if (ret) 1153 return ret; 1154 1155 if (vfd->device_caps & V4L2_CAP_IO_MC) 1156 return *(int *)arg ? -EINVAL : 0; 1157 1158 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg); 1159 } 1160 1161 static int v4l_s_output(const struct v4l2_ioctl_ops *ops, 1162 struct file *file, void *fh, void *arg) 1163 { 1164 struct video_device *vfd = video_devdata(file); 1165 1166 if (vfd->device_caps & V4L2_CAP_IO_MC) 1167 return *(int *)arg ? -EINVAL : 0; 1168 1169 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg); 1170 } 1171 1172 static int v4l_g_priority(const struct v4l2_ioctl_ops *ops, 1173 struct file *file, void *fh, void *arg) 1174 { 1175 struct video_device *vfd; 1176 u32 *p = arg; 1177 1178 vfd = video_devdata(file); 1179 *p = v4l2_prio_max(vfd->prio); 1180 return 0; 1181 } 1182 1183 static int v4l_s_priority(const struct v4l2_ioctl_ops *ops, 1184 struct file *file, void *fh, void *arg) 1185 { 1186 struct video_device *vfd; 1187 struct v4l2_fh *vfh; 1188 u32 *p = arg; 1189 1190 vfd = video_devdata(file); 1191 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 1192 return -ENOTTY; 1193 vfh = file->private_data; 1194 return v4l2_prio_change(vfd->prio, &vfh->prio, *p); 1195 } 1196 1197 static int v4l_enuminput(const struct v4l2_ioctl_ops *ops, 1198 struct file *file, void *fh, void *arg) 1199 { 1200 struct video_device *vfd = video_devdata(file); 1201 struct v4l2_input *p = arg; 1202 1203 /* 1204 * We set the flags for CAP_DV_TIMINGS & 1205 * CAP_STD here based on ioctl handler provided by the 1206 * driver. If the driver doesn't support these 1207 * for a specific input, it must override these flags. 1208 */ 1209 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1210 p->capabilities |= V4L2_IN_CAP_STD; 1211 1212 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1213 if (p->index) 1214 return -EINVAL; 1215 strscpy(p->name, vfd->name, sizeof(p->name)); 1216 p->type = V4L2_INPUT_TYPE_CAMERA; 1217 return 0; 1218 } 1219 1220 return ops->vidioc_enum_input(file, fh, p); 1221 } 1222 1223 static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops, 1224 struct file *file, void *fh, void *arg) 1225 { 1226 struct video_device *vfd = video_devdata(file); 1227 struct v4l2_output *p = arg; 1228 1229 /* 1230 * We set the flags for CAP_DV_TIMINGS & 1231 * CAP_STD here based on ioctl handler provided by the 1232 * driver. If the driver doesn't support these 1233 * for a specific output, it must override these flags. 1234 */ 1235 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1236 p->capabilities |= V4L2_OUT_CAP_STD; 1237 1238 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1239 if (p->index) 1240 return -EINVAL; 1241 strscpy(p->name, vfd->name, sizeof(p->name)); 1242 p->type = V4L2_OUTPUT_TYPE_ANALOG; 1243 return 0; 1244 } 1245 1246 return ops->vidioc_enum_output(file, fh, p); 1247 } 1248 1249 static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) 1250 { 1251 const unsigned sz = sizeof(fmt->description); 1252 const char *descr = NULL; 1253 u32 flags = 0; 1254 1255 /* 1256 * We depart from the normal coding style here since the descriptions 1257 * should be aligned so it is easy to see which descriptions will be 1258 * longer than 31 characters (the max length for a description). 1259 * And frankly, this is easier to read anyway. 1260 * 1261 * Note that gcc will use O(log N) comparisons to find the right case. 1262 */ 1263 switch (fmt->pixelformat) { 1264 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1265 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break; 1266 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break; 1267 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break; 1268 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break; 1269 case V4L2_PIX_FMT_RGBA444: descr = "16-bit RGBA 4-4-4-4"; break; 1270 case V4L2_PIX_FMT_RGBX444: descr = "16-bit RGBX 4-4-4-4"; break; 1271 case V4L2_PIX_FMT_ABGR444: descr = "16-bit ABGR 4-4-4-4"; break; 1272 case V4L2_PIX_FMT_XBGR444: descr = "16-bit XBGR 4-4-4-4"; break; 1273 case V4L2_PIX_FMT_BGRA444: descr = "16-bit BGRA 4-4-4-4"; break; 1274 case V4L2_PIX_FMT_BGRX444: descr = "16-bit BGRX 4-4-4-4"; break; 1275 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break; 1276 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break; 1277 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break; 1278 case V4L2_PIX_FMT_ABGR555: descr = "16-bit ABGR 1-5-5-5"; break; 1279 case V4L2_PIX_FMT_XBGR555: descr = "16-bit XBGR 1-5-5-5"; break; 1280 case V4L2_PIX_FMT_RGBA555: descr = "16-bit RGBA 5-5-5-1"; break; 1281 case V4L2_PIX_FMT_RGBX555: descr = "16-bit RGBX 5-5-5-1"; break; 1282 case V4L2_PIX_FMT_BGRA555: descr = "16-bit BGRA 5-5-5-1"; break; 1283 case V4L2_PIX_FMT_BGRX555: descr = "16-bit BGRX 5-5-5-1"; break; 1284 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break; 1285 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break; 1286 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break; 1287 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break; 1288 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break; 1289 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break; 1290 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break; 1291 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break; 1292 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break; 1293 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break; 1294 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break; 1295 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break; 1296 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break; 1297 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break; 1298 case V4L2_PIX_FMT_BGRA32: descr = "32-bit ABGR 8-8-8-8"; break; 1299 case V4L2_PIX_FMT_BGRX32: descr = "32-bit XBGR 8-8-8-8"; break; 1300 case V4L2_PIX_FMT_RGBA32: descr = "32-bit RGBA 8-8-8-8"; break; 1301 case V4L2_PIX_FMT_RGBX32: descr = "32-bit RGBX 8-8-8-8"; break; 1302 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break; 1303 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break; 1304 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break; 1305 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break; 1306 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break; 1307 case V4L2_PIX_FMT_Y14: descr = "14-bit Greyscale"; break; 1308 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break; 1309 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break; 1310 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break; 1311 case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break; 1312 case V4L2_PIX_FMT_IPU3_Y10: descr = "10-bit greyscale (IPU3 Packed)"; break; 1313 case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break; 1314 case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break; 1315 case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break; 1316 case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break; 1317 case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break; 1318 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break; 1319 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break; 1320 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break; 1321 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break; 1322 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break; 1323 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break; 1324 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break; 1325 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break; 1326 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break; 1327 case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break; 1328 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break; 1329 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break; 1330 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break; 1331 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break; 1332 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break; 1333 case V4L2_PIX_FMT_YUV24: descr = "24-bit YUV 4:4:4 8-8-8"; break; 1334 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break; 1335 case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break; 1336 case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break; 1337 case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break; 1338 case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break; 1339 case V4L2_PIX_FMT_YUVA32: descr = "32-bit YUVA 8-8-8-8"; break; 1340 case V4L2_PIX_FMT_YUVX32: descr = "32-bit YUVX 8-8-8-8"; break; 1341 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break; 1342 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break; 1343 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break; 1344 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break; 1345 case V4L2_PIX_FMT_NV12: descr = "Y/UV 4:2:0"; break; 1346 case V4L2_PIX_FMT_NV21: descr = "Y/VU 4:2:0"; break; 1347 case V4L2_PIX_FMT_NV16: descr = "Y/UV 4:2:2"; break; 1348 case V4L2_PIX_FMT_NV61: descr = "Y/VU 4:2:2"; break; 1349 case V4L2_PIX_FMT_NV24: descr = "Y/UV 4:4:4"; break; 1350 case V4L2_PIX_FMT_NV42: descr = "Y/VU 4:4:4"; break; 1351 case V4L2_PIX_FMT_P010: descr = "10-bit Y/UV 4:2:0"; break; 1352 case V4L2_PIX_FMT_NV12_4L4: descr = "Y/UV 4:2:0 (4x4 Linear)"; break; 1353 case V4L2_PIX_FMT_NV12_16L16: descr = "Y/UV 4:2:0 (16x16 Linear)"; break; 1354 case V4L2_PIX_FMT_NV12_32L32: descr = "Y/UV 4:2:0 (32x32 Linear)"; break; 1355 case V4L2_PIX_FMT_P010_4L4: descr = "10-bit Y/UV 4:2:0 (4x4 Linear)"; break; 1356 case V4L2_PIX_FMT_NV12M: descr = "Y/UV 4:2:0 (N-C)"; break; 1357 case V4L2_PIX_FMT_NV21M: descr = "Y/VU 4:2:0 (N-C)"; break; 1358 case V4L2_PIX_FMT_NV16M: descr = "Y/UV 4:2:2 (N-C)"; break; 1359 case V4L2_PIX_FMT_NV61M: descr = "Y/VU 4:2:2 (N-C)"; break; 1360 case V4L2_PIX_FMT_NV12MT: descr = "Y/UV 4:2:0 (64x32 MB, N-C)"; break; 1361 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/UV 4:2:0 (16x16 MB, N-C)"; break; 1362 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break; 1363 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break; 1364 case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break; 1365 case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break; 1366 case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break; 1367 case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break; 1368 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break; 1369 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break; 1370 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break; 1371 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break; 1372 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break; 1373 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break; 1374 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break; 1375 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break; 1376 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break; 1377 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break; 1378 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break; 1379 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break; 1380 case V4L2_PIX_FMT_IPU3_SBGGR10: descr = "10-bit bayer BGGR IPU3 Packed"; break; 1381 case V4L2_PIX_FMT_IPU3_SGBRG10: descr = "10-bit bayer GBRG IPU3 Packed"; break; 1382 case V4L2_PIX_FMT_IPU3_SGRBG10: descr = "10-bit bayer GRBG IPU3 Packed"; break; 1383 case V4L2_PIX_FMT_IPU3_SRGGB10: descr = "10-bit bayer RGGB IPU3 Packed"; break; 1384 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break; 1385 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break; 1386 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break; 1387 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break; 1388 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break; 1389 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break; 1390 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break; 1391 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break; 1392 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break; 1393 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break; 1394 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break; 1395 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break; 1396 case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break; 1397 case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break; 1398 case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break; 1399 case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break; 1400 case V4L2_PIX_FMT_SBGGR14: descr = "14-bit Bayer BGBG/GRGR"; break; 1401 case V4L2_PIX_FMT_SGBRG14: descr = "14-bit Bayer GBGB/RGRG"; break; 1402 case V4L2_PIX_FMT_SGRBG14: descr = "14-bit Bayer GRGR/BGBG"; break; 1403 case V4L2_PIX_FMT_SRGGB14: descr = "14-bit Bayer RGRG/GBGB"; break; 1404 case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break; 1405 case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break; 1406 case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break; 1407 case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break; 1408 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break; 1409 case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break; 1410 case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break; 1411 case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break; 1412 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break; 1413 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break; 1414 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break; 1415 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break; 1416 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break; 1417 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break; 1418 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break; 1419 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break; 1420 case V4L2_PIX_FMT_MM21: descr = "Mediatek 8-bit Block Format"; break; 1421 case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break; 1422 case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break; 1423 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break; 1424 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break; 1425 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break; 1426 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break; 1427 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break; 1428 case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break; 1429 case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break; 1430 case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break; 1431 case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit Signed Deltas"; break; 1432 case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit Signed Deltas"; break; 1433 case V4L2_TCH_FMT_TU16: descr = "16-bit Unsigned Touch Data"; break; 1434 case V4L2_TCH_FMT_TU08: descr = "8-bit Unsigned Touch Data"; break; 1435 case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break; 1436 case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break; 1437 case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break; 1438 case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break; 1439 case V4L2_META_FMT_VIVID: descr = "Vivid Metadata"; break; 1440 case V4L2_META_FMT_RK_ISP1_PARAMS: descr = "Rockchip ISP1 3A Parameters"; break; 1441 case V4L2_META_FMT_RK_ISP1_STAT_3A: descr = "Rockchip ISP1 3A Statistics"; break; 1442 case V4L2_PIX_FMT_NV12_8L128: descr = "NV12 (8x128 Linear)"; break; 1443 case V4L2_PIX_FMT_NV12M_8L128: descr = "NV12M (8x128 Linear)"; break; 1444 case V4L2_PIX_FMT_NV12_10BE_8L128: descr = "10-bit NV12 (8x128 Linear, BE)"; break; 1445 case V4L2_PIX_FMT_NV12M_10BE_8L128: descr = "10-bit NV12M (8x128 Linear, BE)"; break; 1446 1447 default: 1448 /* Compressed formats */ 1449 flags = V4L2_FMT_FLAG_COMPRESSED; 1450 switch (fmt->pixelformat) { 1451 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1452 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break; 1453 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break; 1454 case V4L2_PIX_FMT_DV: descr = "1394"; break; 1455 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break; 1456 case V4L2_PIX_FMT_H264: descr = "H.264"; break; 1457 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break; 1458 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break; 1459 case V4L2_PIX_FMT_H264_SLICE: descr = "H.264 Parsed Slice Data"; break; 1460 case V4L2_PIX_FMT_H263: descr = "H.263"; break; 1461 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break; 1462 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break; 1463 case V4L2_PIX_FMT_MPEG2_SLICE: descr = "MPEG-2 Parsed Slice Data"; break; 1464 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 Part 2 ES"; break; 1465 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break; 1466 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break; 1467 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break; 1468 case V4L2_PIX_FMT_VP8: descr = "VP8"; break; 1469 case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break; 1470 case V4L2_PIX_FMT_VP9: descr = "VP9"; break; 1471 case V4L2_PIX_FMT_VP9_FRAME: descr = "VP9 Frame"; break; 1472 case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */ 1473 case V4L2_PIX_FMT_HEVC_SLICE: descr = "HEVC Parsed Slice Data"; break; 1474 case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */ 1475 case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */ 1476 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break; 1477 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break; 1478 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break; 1479 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break; 1480 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break; 1481 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break; 1482 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break; 1483 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break; 1484 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break; 1485 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break; 1486 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break; 1487 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break; 1488 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break; 1489 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break; 1490 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break; 1491 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break; 1492 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break; 1493 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break; 1494 case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break; 1495 case V4L2_PIX_FMT_QC08C: descr = "QCOM Compressed 8-bit Format"; break; 1496 case V4L2_PIX_FMT_QC10C: descr = "QCOM Compressed 10-bit Format"; break; 1497 case V4L2_PIX_FMT_AJPG: descr = "Aspeed JPEG"; break; 1498 default: 1499 if (fmt->description[0]) 1500 return; 1501 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat); 1502 flags = 0; 1503 snprintf(fmt->description, sz, "%p4cc", 1504 &fmt->pixelformat); 1505 break; 1506 } 1507 } 1508 1509 if (descr) 1510 WARN_ON(strscpy(fmt->description, descr, sz) < 0); 1511 fmt->flags |= flags; 1512 } 1513 1514 static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops, 1515 struct file *file, void *fh, void *arg) 1516 { 1517 struct video_device *vdev = video_devdata(file); 1518 struct v4l2_fmtdesc *p = arg; 1519 int ret = check_fmt(file, p->type); 1520 u32 mbus_code; 1521 u32 cap_mask; 1522 1523 if (ret) 1524 return ret; 1525 ret = -EINVAL; 1526 1527 if (!(vdev->device_caps & V4L2_CAP_IO_MC)) 1528 p->mbus_code = 0; 1529 1530 mbus_code = p->mbus_code; 1531 memset_after(p, 0, type); 1532 p->mbus_code = mbus_code; 1533 1534 switch (p->type) { 1535 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1536 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1537 cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE | 1538 V4L2_CAP_VIDEO_M2M_MPLANE; 1539 if (!!(vdev->device_caps & cap_mask) != 1540 (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) 1541 break; 1542 1543 if (unlikely(!ops->vidioc_enum_fmt_vid_cap)) 1544 break; 1545 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg); 1546 break; 1547 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1548 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay)) 1549 break; 1550 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg); 1551 break; 1552 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1553 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1554 cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE | 1555 V4L2_CAP_VIDEO_M2M_MPLANE; 1556 if (!!(vdev->device_caps & cap_mask) != 1557 (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)) 1558 break; 1559 1560 if (unlikely(!ops->vidioc_enum_fmt_vid_out)) 1561 break; 1562 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg); 1563 break; 1564 case V4L2_BUF_TYPE_SDR_CAPTURE: 1565 if (unlikely(!ops->vidioc_enum_fmt_sdr_cap)) 1566 break; 1567 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg); 1568 break; 1569 case V4L2_BUF_TYPE_SDR_OUTPUT: 1570 if (unlikely(!ops->vidioc_enum_fmt_sdr_out)) 1571 break; 1572 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg); 1573 break; 1574 case V4L2_BUF_TYPE_META_CAPTURE: 1575 if (unlikely(!ops->vidioc_enum_fmt_meta_cap)) 1576 break; 1577 ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg); 1578 break; 1579 case V4L2_BUF_TYPE_META_OUTPUT: 1580 if (unlikely(!ops->vidioc_enum_fmt_meta_out)) 1581 break; 1582 ret = ops->vidioc_enum_fmt_meta_out(file, fh, arg); 1583 break; 1584 } 1585 if (ret == 0) 1586 v4l_fill_fmtdesc(p); 1587 return ret; 1588 } 1589 1590 static void v4l_pix_format_touch(struct v4l2_pix_format *p) 1591 { 1592 /* 1593 * The v4l2_pix_format structure contains fields that make no sense for 1594 * touch. Set them to default values in this case. 1595 */ 1596 1597 p->field = V4L2_FIELD_NONE; 1598 p->colorspace = V4L2_COLORSPACE_RAW; 1599 p->flags = 0; 1600 p->ycbcr_enc = 0; 1601 p->quantization = 0; 1602 p->xfer_func = 0; 1603 } 1604 1605 static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, 1606 struct file *file, void *fh, void *arg) 1607 { 1608 struct v4l2_format *p = arg; 1609 struct video_device *vfd = video_devdata(file); 1610 int ret = check_fmt(file, p->type); 1611 1612 if (ret) 1613 return ret; 1614 1615 /* 1616 * fmt can't be cleared for these overlay types due to the 'clips' 1617 * 'clipcount' and 'bitmap' pointers in struct v4l2_window. 1618 * Those are provided by the user. So handle these two overlay types 1619 * first, and then just do a simple memset for the other types. 1620 */ 1621 switch (p->type) { 1622 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1623 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: { 1624 struct v4l2_clip *clips = p->fmt.win.clips; 1625 u32 clipcount = p->fmt.win.clipcount; 1626 void __user *bitmap = p->fmt.win.bitmap; 1627 1628 memset(&p->fmt, 0, sizeof(p->fmt)); 1629 p->fmt.win.clips = clips; 1630 p->fmt.win.clipcount = clipcount; 1631 p->fmt.win.bitmap = bitmap; 1632 break; 1633 } 1634 default: 1635 memset(&p->fmt, 0, sizeof(p->fmt)); 1636 break; 1637 } 1638 1639 switch (p->type) { 1640 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1641 if (unlikely(!ops->vidioc_g_fmt_vid_cap)) 1642 break; 1643 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1644 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg); 1645 /* just in case the driver zeroed it again */ 1646 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1647 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1648 v4l_pix_format_touch(&p->fmt.pix); 1649 return ret; 1650 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1651 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg); 1652 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1653 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg); 1654 case V4L2_BUF_TYPE_VBI_CAPTURE: 1655 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg); 1656 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1657 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg); 1658 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1659 if (unlikely(!ops->vidioc_g_fmt_vid_out)) 1660 break; 1661 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1662 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg); 1663 /* just in case the driver zeroed it again */ 1664 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1665 return ret; 1666 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1667 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg); 1668 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1669 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg); 1670 case V4L2_BUF_TYPE_VBI_OUTPUT: 1671 return ops->vidioc_g_fmt_vbi_out(file, fh, arg); 1672 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1673 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg); 1674 case V4L2_BUF_TYPE_SDR_CAPTURE: 1675 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg); 1676 case V4L2_BUF_TYPE_SDR_OUTPUT: 1677 return ops->vidioc_g_fmt_sdr_out(file, fh, arg); 1678 case V4L2_BUF_TYPE_META_CAPTURE: 1679 return ops->vidioc_g_fmt_meta_cap(file, fh, arg); 1680 case V4L2_BUF_TYPE_META_OUTPUT: 1681 return ops->vidioc_g_fmt_meta_out(file, fh, arg); 1682 } 1683 return -EINVAL; 1684 } 1685 1686 static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, 1687 struct file *file, void *fh, void *arg) 1688 { 1689 struct v4l2_format *p = arg; 1690 struct video_device *vfd = video_devdata(file); 1691 int ret = check_fmt(file, p->type); 1692 unsigned int i; 1693 1694 if (ret) 1695 return ret; 1696 1697 ret = v4l_enable_media_source(vfd); 1698 if (ret) 1699 return ret; 1700 v4l_sanitize_format(p); 1701 1702 switch (p->type) { 1703 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1704 if (unlikely(!ops->vidioc_s_fmt_vid_cap)) 1705 break; 1706 memset_after(p, 0, fmt.pix); 1707 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg); 1708 /* just in case the driver zeroed it again */ 1709 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1710 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1711 v4l_pix_format_touch(&p->fmt.pix); 1712 return ret; 1713 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1714 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane)) 1715 break; 1716 memset_after(p, 0, fmt.pix_mp.xfer_func); 1717 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1718 memset_after(&p->fmt.pix_mp.plane_fmt[i], 1719 0, bytesperline); 1720 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg); 1721 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1722 if (unlikely(!ops->vidioc_s_fmt_vid_overlay)) 1723 break; 1724 memset_after(p, 0, fmt.win); 1725 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg); 1726 case V4L2_BUF_TYPE_VBI_CAPTURE: 1727 if (unlikely(!ops->vidioc_s_fmt_vbi_cap)) 1728 break; 1729 memset_after(p, 0, fmt.vbi.flags); 1730 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg); 1731 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1732 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap)) 1733 break; 1734 memset_after(p, 0, fmt.sliced.io_size); 1735 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg); 1736 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1737 if (unlikely(!ops->vidioc_s_fmt_vid_out)) 1738 break; 1739 memset_after(p, 0, fmt.pix); 1740 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg); 1741 /* just in case the driver zeroed it again */ 1742 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1743 return ret; 1744 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1745 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane)) 1746 break; 1747 memset_after(p, 0, fmt.pix_mp.xfer_func); 1748 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1749 memset_after(&p->fmt.pix_mp.plane_fmt[i], 1750 0, bytesperline); 1751 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg); 1752 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1753 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay)) 1754 break; 1755 memset_after(p, 0, fmt.win); 1756 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg); 1757 case V4L2_BUF_TYPE_VBI_OUTPUT: 1758 if (unlikely(!ops->vidioc_s_fmt_vbi_out)) 1759 break; 1760 memset_after(p, 0, fmt.vbi.flags); 1761 return ops->vidioc_s_fmt_vbi_out(file, fh, arg); 1762 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1763 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out)) 1764 break; 1765 memset_after(p, 0, fmt.sliced.io_size); 1766 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg); 1767 case V4L2_BUF_TYPE_SDR_CAPTURE: 1768 if (unlikely(!ops->vidioc_s_fmt_sdr_cap)) 1769 break; 1770 memset_after(p, 0, fmt.sdr.buffersize); 1771 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg); 1772 case V4L2_BUF_TYPE_SDR_OUTPUT: 1773 if (unlikely(!ops->vidioc_s_fmt_sdr_out)) 1774 break; 1775 memset_after(p, 0, fmt.sdr.buffersize); 1776 return ops->vidioc_s_fmt_sdr_out(file, fh, arg); 1777 case V4L2_BUF_TYPE_META_CAPTURE: 1778 if (unlikely(!ops->vidioc_s_fmt_meta_cap)) 1779 break; 1780 memset_after(p, 0, fmt.meta); 1781 return ops->vidioc_s_fmt_meta_cap(file, fh, arg); 1782 case V4L2_BUF_TYPE_META_OUTPUT: 1783 if (unlikely(!ops->vidioc_s_fmt_meta_out)) 1784 break; 1785 memset_after(p, 0, fmt.meta); 1786 return ops->vidioc_s_fmt_meta_out(file, fh, arg); 1787 } 1788 return -EINVAL; 1789 } 1790 1791 static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, 1792 struct file *file, void *fh, void *arg) 1793 { 1794 struct v4l2_format *p = arg; 1795 struct video_device *vfd = video_devdata(file); 1796 int ret = check_fmt(file, p->type); 1797 unsigned int i; 1798 1799 if (ret) 1800 return ret; 1801 1802 v4l_sanitize_format(p); 1803 1804 switch (p->type) { 1805 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1806 if (unlikely(!ops->vidioc_try_fmt_vid_cap)) 1807 break; 1808 memset_after(p, 0, fmt.pix); 1809 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg); 1810 /* just in case the driver zeroed it again */ 1811 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1812 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1813 v4l_pix_format_touch(&p->fmt.pix); 1814 return ret; 1815 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1816 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane)) 1817 break; 1818 memset_after(p, 0, fmt.pix_mp.xfer_func); 1819 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1820 memset_after(&p->fmt.pix_mp.plane_fmt[i], 1821 0, bytesperline); 1822 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg); 1823 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1824 if (unlikely(!ops->vidioc_try_fmt_vid_overlay)) 1825 break; 1826 memset_after(p, 0, fmt.win); 1827 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg); 1828 case V4L2_BUF_TYPE_VBI_CAPTURE: 1829 if (unlikely(!ops->vidioc_try_fmt_vbi_cap)) 1830 break; 1831 memset_after(p, 0, fmt.vbi.flags); 1832 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg); 1833 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1834 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap)) 1835 break; 1836 memset_after(p, 0, fmt.sliced.io_size); 1837 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg); 1838 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1839 if (unlikely(!ops->vidioc_try_fmt_vid_out)) 1840 break; 1841 memset_after(p, 0, fmt.pix); 1842 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg); 1843 /* just in case the driver zeroed it again */ 1844 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1845 return ret; 1846 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1847 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane)) 1848 break; 1849 memset_after(p, 0, fmt.pix_mp.xfer_func); 1850 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1851 memset_after(&p->fmt.pix_mp.plane_fmt[i], 1852 0, bytesperline); 1853 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg); 1854 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1855 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay)) 1856 break; 1857 memset_after(p, 0, fmt.win); 1858 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg); 1859 case V4L2_BUF_TYPE_VBI_OUTPUT: 1860 if (unlikely(!ops->vidioc_try_fmt_vbi_out)) 1861 break; 1862 memset_after(p, 0, fmt.vbi.flags); 1863 return ops->vidioc_try_fmt_vbi_out(file, fh, arg); 1864 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1865 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out)) 1866 break; 1867 memset_after(p, 0, fmt.sliced.io_size); 1868 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg); 1869 case V4L2_BUF_TYPE_SDR_CAPTURE: 1870 if (unlikely(!ops->vidioc_try_fmt_sdr_cap)) 1871 break; 1872 memset_after(p, 0, fmt.sdr.buffersize); 1873 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg); 1874 case V4L2_BUF_TYPE_SDR_OUTPUT: 1875 if (unlikely(!ops->vidioc_try_fmt_sdr_out)) 1876 break; 1877 memset_after(p, 0, fmt.sdr.buffersize); 1878 return ops->vidioc_try_fmt_sdr_out(file, fh, arg); 1879 case V4L2_BUF_TYPE_META_CAPTURE: 1880 if (unlikely(!ops->vidioc_try_fmt_meta_cap)) 1881 break; 1882 memset_after(p, 0, fmt.meta); 1883 return ops->vidioc_try_fmt_meta_cap(file, fh, arg); 1884 case V4L2_BUF_TYPE_META_OUTPUT: 1885 if (unlikely(!ops->vidioc_try_fmt_meta_out)) 1886 break; 1887 memset_after(p, 0, fmt.meta); 1888 return ops->vidioc_try_fmt_meta_out(file, fh, arg); 1889 } 1890 return -EINVAL; 1891 } 1892 1893 static int v4l_streamon(const struct v4l2_ioctl_ops *ops, 1894 struct file *file, void *fh, void *arg) 1895 { 1896 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg); 1897 } 1898 1899 static int v4l_streamoff(const struct v4l2_ioctl_ops *ops, 1900 struct file *file, void *fh, void *arg) 1901 { 1902 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg); 1903 } 1904 1905 static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops, 1906 struct file *file, void *fh, void *arg) 1907 { 1908 struct video_device *vfd = video_devdata(file); 1909 struct v4l2_tuner *p = arg; 1910 int err; 1911 1912 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1913 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1914 err = ops->vidioc_g_tuner(file, fh, p); 1915 if (!err) 1916 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1917 return err; 1918 } 1919 1920 static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops, 1921 struct file *file, void *fh, void *arg) 1922 { 1923 struct video_device *vfd = video_devdata(file); 1924 struct v4l2_tuner *p = arg; 1925 int ret; 1926 1927 ret = v4l_enable_media_source(vfd); 1928 if (ret) 1929 return ret; 1930 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1931 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1932 return ops->vidioc_s_tuner(file, fh, p); 1933 } 1934 1935 static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops, 1936 struct file *file, void *fh, void *arg) 1937 { 1938 struct video_device *vfd = video_devdata(file); 1939 struct v4l2_modulator *p = arg; 1940 int err; 1941 1942 if (vfd->vfl_type == VFL_TYPE_RADIO) 1943 p->type = V4L2_TUNER_RADIO; 1944 1945 err = ops->vidioc_g_modulator(file, fh, p); 1946 if (!err) 1947 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1948 return err; 1949 } 1950 1951 static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops, 1952 struct file *file, void *fh, void *arg) 1953 { 1954 struct video_device *vfd = video_devdata(file); 1955 struct v4l2_modulator *p = arg; 1956 1957 if (vfd->vfl_type == VFL_TYPE_RADIO) 1958 p->type = V4L2_TUNER_RADIO; 1959 1960 return ops->vidioc_s_modulator(file, fh, p); 1961 } 1962 1963 static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops, 1964 struct file *file, void *fh, void *arg) 1965 { 1966 struct video_device *vfd = video_devdata(file); 1967 struct v4l2_frequency *p = arg; 1968 1969 if (vfd->vfl_type == VFL_TYPE_SDR) 1970 p->type = V4L2_TUNER_SDR; 1971 else 1972 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1973 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1974 return ops->vidioc_g_frequency(file, fh, p); 1975 } 1976 1977 static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops, 1978 struct file *file, void *fh, void *arg) 1979 { 1980 struct video_device *vfd = video_devdata(file); 1981 const struct v4l2_frequency *p = arg; 1982 enum v4l2_tuner_type type; 1983 int ret; 1984 1985 ret = v4l_enable_media_source(vfd); 1986 if (ret) 1987 return ret; 1988 if (vfd->vfl_type == VFL_TYPE_SDR) { 1989 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 1990 return -EINVAL; 1991 } else { 1992 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1993 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1994 if (type != p->type) 1995 return -EINVAL; 1996 } 1997 return ops->vidioc_s_frequency(file, fh, p); 1998 } 1999 2000 static int v4l_enumstd(const struct v4l2_ioctl_ops *ops, 2001 struct file *file, void *fh, void *arg) 2002 { 2003 struct video_device *vfd = video_devdata(file); 2004 struct v4l2_standard *p = arg; 2005 2006 return v4l_video_std_enumstd(p, vfd->tvnorms); 2007 } 2008 2009 static int v4l_s_std(const struct v4l2_ioctl_ops *ops, 2010 struct file *file, void *fh, void *arg) 2011 { 2012 struct video_device *vfd = video_devdata(file); 2013 v4l2_std_id id = *(v4l2_std_id *)arg, norm; 2014 int ret; 2015 2016 ret = v4l_enable_media_source(vfd); 2017 if (ret) 2018 return ret; 2019 norm = id & vfd->tvnorms; 2020 if (vfd->tvnorms && !norm) /* Check if std is supported */ 2021 return -EINVAL; 2022 2023 /* Calls the specific handler */ 2024 return ops->vidioc_s_std(file, fh, norm); 2025 } 2026 2027 static int v4l_querystd(const struct v4l2_ioctl_ops *ops, 2028 struct file *file, void *fh, void *arg) 2029 { 2030 struct video_device *vfd = video_devdata(file); 2031 v4l2_std_id *p = arg; 2032 int ret; 2033 2034 ret = v4l_enable_media_source(vfd); 2035 if (ret) 2036 return ret; 2037 /* 2038 * If no signal is detected, then the driver should return 2039 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with 2040 * any standards that do not apply removed. 2041 * 2042 * This means that tuners, audio and video decoders can join 2043 * their efforts to improve the standards detection. 2044 */ 2045 *p = vfd->tvnorms; 2046 return ops->vidioc_querystd(file, fh, arg); 2047 } 2048 2049 static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops, 2050 struct file *file, void *fh, void *arg) 2051 { 2052 struct video_device *vfd = video_devdata(file); 2053 struct v4l2_hw_freq_seek *p = arg; 2054 enum v4l2_tuner_type type; 2055 int ret; 2056 2057 ret = v4l_enable_media_source(vfd); 2058 if (ret) 2059 return ret; 2060 /* s_hw_freq_seek is not supported for SDR for now */ 2061 if (vfd->vfl_type == VFL_TYPE_SDR) 2062 return -EINVAL; 2063 2064 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2065 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2066 if (p->type != type) 2067 return -EINVAL; 2068 return ops->vidioc_s_hw_freq_seek(file, fh, p); 2069 } 2070 2071 static int v4l_overlay(const struct v4l2_ioctl_ops *ops, 2072 struct file *file, void *fh, void *arg) 2073 { 2074 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg); 2075 } 2076 2077 static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops, 2078 struct file *file, void *fh, void *arg) 2079 { 2080 struct v4l2_requestbuffers *p = arg; 2081 int ret = check_fmt(file, p->type); 2082 2083 if (ret) 2084 return ret; 2085 2086 memset_after(p, 0, flags); 2087 2088 return ops->vidioc_reqbufs(file, fh, p); 2089 } 2090 2091 static int v4l_querybuf(const struct v4l2_ioctl_ops *ops, 2092 struct file *file, void *fh, void *arg) 2093 { 2094 struct v4l2_buffer *p = arg; 2095 int ret = check_fmt(file, p->type); 2096 2097 return ret ? ret : ops->vidioc_querybuf(file, fh, p); 2098 } 2099 2100 static int v4l_qbuf(const struct v4l2_ioctl_ops *ops, 2101 struct file *file, void *fh, void *arg) 2102 { 2103 struct v4l2_buffer *p = arg; 2104 int ret = check_fmt(file, p->type); 2105 2106 return ret ? ret : ops->vidioc_qbuf(file, fh, p); 2107 } 2108 2109 static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops, 2110 struct file *file, void *fh, void *arg) 2111 { 2112 struct v4l2_buffer *p = arg; 2113 int ret = check_fmt(file, p->type); 2114 2115 return ret ? ret : ops->vidioc_dqbuf(file, fh, p); 2116 } 2117 2118 static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops, 2119 struct file *file, void *fh, void *arg) 2120 { 2121 struct v4l2_create_buffers *create = arg; 2122 int ret = check_fmt(file, create->format.type); 2123 2124 if (ret) 2125 return ret; 2126 2127 memset_after(create, 0, flags); 2128 2129 v4l_sanitize_format(&create->format); 2130 2131 ret = ops->vidioc_create_bufs(file, fh, create); 2132 2133 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 2134 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT) 2135 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 2136 2137 return ret; 2138 } 2139 2140 static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops, 2141 struct file *file, void *fh, void *arg) 2142 { 2143 struct v4l2_buffer *b = arg; 2144 int ret = check_fmt(file, b->type); 2145 2146 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b); 2147 } 2148 2149 static int v4l_g_parm(const struct v4l2_ioctl_ops *ops, 2150 struct file *file, void *fh, void *arg) 2151 { 2152 struct video_device *vfd = video_devdata(file); 2153 struct v4l2_streamparm *p = arg; 2154 v4l2_std_id std; 2155 int ret = check_fmt(file, p->type); 2156 2157 if (ret) 2158 return ret; 2159 if (ops->vidioc_g_parm) 2160 return ops->vidioc_g_parm(file, fh, p); 2161 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && 2162 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2163 return -EINVAL; 2164 if (vfd->device_caps & V4L2_CAP_READWRITE) 2165 p->parm.capture.readbuffers = 2; 2166 ret = ops->vidioc_g_std(file, fh, &std); 2167 if (ret == 0) 2168 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe); 2169 return ret; 2170 } 2171 2172 static int v4l_s_parm(const struct v4l2_ioctl_ops *ops, 2173 struct file *file, void *fh, void *arg) 2174 { 2175 struct v4l2_streamparm *p = arg; 2176 int ret = check_fmt(file, p->type); 2177 2178 if (ret) 2179 return ret; 2180 2181 /* Note: extendedmode is never used in drivers */ 2182 if (V4L2_TYPE_IS_OUTPUT(p->type)) { 2183 memset(p->parm.output.reserved, 0, 2184 sizeof(p->parm.output.reserved)); 2185 p->parm.output.extendedmode = 0; 2186 p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY; 2187 } else { 2188 memset(p->parm.capture.reserved, 0, 2189 sizeof(p->parm.capture.reserved)); 2190 p->parm.capture.extendedmode = 0; 2191 p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY; 2192 } 2193 return ops->vidioc_s_parm(file, fh, p); 2194 } 2195 2196 static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops, 2197 struct file *file, void *fh, void *arg) 2198 { 2199 struct video_device *vfd = video_devdata(file); 2200 struct v4l2_queryctrl *p = arg; 2201 struct v4l2_fh *vfh = 2202 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2203 2204 if (vfh && vfh->ctrl_handler) 2205 return v4l2_queryctrl(vfh->ctrl_handler, p); 2206 if (vfd->ctrl_handler) 2207 return v4l2_queryctrl(vfd->ctrl_handler, p); 2208 if (ops->vidioc_queryctrl) 2209 return ops->vidioc_queryctrl(file, fh, p); 2210 return -ENOTTY; 2211 } 2212 2213 static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops, 2214 struct file *file, void *fh, void *arg) 2215 { 2216 struct video_device *vfd = video_devdata(file); 2217 struct v4l2_query_ext_ctrl *p = arg; 2218 struct v4l2_fh *vfh = 2219 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2220 2221 if (vfh && vfh->ctrl_handler) 2222 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p); 2223 if (vfd->ctrl_handler) 2224 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p); 2225 if (ops->vidioc_query_ext_ctrl) 2226 return ops->vidioc_query_ext_ctrl(file, fh, p); 2227 return -ENOTTY; 2228 } 2229 2230 static int v4l_querymenu(const struct v4l2_ioctl_ops *ops, 2231 struct file *file, void *fh, void *arg) 2232 { 2233 struct video_device *vfd = video_devdata(file); 2234 struct v4l2_querymenu *p = arg; 2235 struct v4l2_fh *vfh = 2236 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2237 2238 if (vfh && vfh->ctrl_handler) 2239 return v4l2_querymenu(vfh->ctrl_handler, p); 2240 if (vfd->ctrl_handler) 2241 return v4l2_querymenu(vfd->ctrl_handler, p); 2242 if (ops->vidioc_querymenu) 2243 return ops->vidioc_querymenu(file, fh, p); 2244 return -ENOTTY; 2245 } 2246 2247 static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops, 2248 struct file *file, void *fh, void *arg) 2249 { 2250 struct video_device *vfd = video_devdata(file); 2251 struct v4l2_control *p = arg; 2252 struct v4l2_fh *vfh = 2253 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2254 struct v4l2_ext_controls ctrls; 2255 struct v4l2_ext_control ctrl; 2256 2257 if (vfh && vfh->ctrl_handler) 2258 return v4l2_g_ctrl(vfh->ctrl_handler, p); 2259 if (vfd->ctrl_handler) 2260 return v4l2_g_ctrl(vfd->ctrl_handler, p); 2261 if (ops->vidioc_g_ctrl) 2262 return ops->vidioc_g_ctrl(file, fh, p); 2263 if (ops->vidioc_g_ext_ctrls == NULL) 2264 return -ENOTTY; 2265 2266 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2267 ctrls.count = 1; 2268 ctrls.controls = &ctrl; 2269 ctrl.id = p->id; 2270 ctrl.value = p->value; 2271 if (check_ext_ctrls(&ctrls, VIDIOC_G_CTRL)) { 2272 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls); 2273 2274 if (ret == 0) 2275 p->value = ctrl.value; 2276 return ret; 2277 } 2278 return -EINVAL; 2279 } 2280 2281 static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, 2282 struct file *file, void *fh, void *arg) 2283 { 2284 struct video_device *vfd = video_devdata(file); 2285 struct v4l2_control *p = arg; 2286 struct v4l2_fh *vfh = 2287 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2288 struct v4l2_ext_controls ctrls; 2289 struct v4l2_ext_control ctrl; 2290 int ret; 2291 2292 if (vfh && vfh->ctrl_handler) 2293 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p); 2294 if (vfd->ctrl_handler) 2295 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p); 2296 if (ops->vidioc_s_ctrl) 2297 return ops->vidioc_s_ctrl(file, fh, p); 2298 if (ops->vidioc_s_ext_ctrls == NULL) 2299 return -ENOTTY; 2300 2301 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2302 ctrls.count = 1; 2303 ctrls.controls = &ctrl; 2304 ctrl.id = p->id; 2305 ctrl.value = p->value; 2306 if (!check_ext_ctrls(&ctrls, VIDIOC_S_CTRL)) 2307 return -EINVAL; 2308 ret = ops->vidioc_s_ext_ctrls(file, fh, &ctrls); 2309 p->value = ctrl.value; 2310 return ret; 2311 } 2312 2313 static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2314 struct file *file, void *fh, void *arg) 2315 { 2316 struct video_device *vfd = video_devdata(file); 2317 struct v4l2_ext_controls *p = arg; 2318 struct v4l2_fh *vfh = 2319 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2320 2321 p->error_idx = p->count; 2322 if (vfh && vfh->ctrl_handler) 2323 return v4l2_g_ext_ctrls(vfh->ctrl_handler, 2324 vfd, vfd->v4l2_dev->mdev, p); 2325 if (vfd->ctrl_handler) 2326 return v4l2_g_ext_ctrls(vfd->ctrl_handler, 2327 vfd, vfd->v4l2_dev->mdev, p); 2328 if (ops->vidioc_g_ext_ctrls == NULL) 2329 return -ENOTTY; 2330 return check_ext_ctrls(p, VIDIOC_G_EXT_CTRLS) ? 2331 ops->vidioc_g_ext_ctrls(file, fh, p) : -EINVAL; 2332 } 2333 2334 static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2335 struct file *file, void *fh, void *arg) 2336 { 2337 struct video_device *vfd = video_devdata(file); 2338 struct v4l2_ext_controls *p = arg; 2339 struct v4l2_fh *vfh = 2340 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2341 2342 p->error_idx = p->count; 2343 if (vfh && vfh->ctrl_handler) 2344 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, 2345 vfd, vfd->v4l2_dev->mdev, p); 2346 if (vfd->ctrl_handler) 2347 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, 2348 vfd, vfd->v4l2_dev->mdev, p); 2349 if (ops->vidioc_s_ext_ctrls == NULL) 2350 return -ENOTTY; 2351 return check_ext_ctrls(p, VIDIOC_S_EXT_CTRLS) ? 2352 ops->vidioc_s_ext_ctrls(file, fh, p) : -EINVAL; 2353 } 2354 2355 static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2356 struct file *file, void *fh, void *arg) 2357 { 2358 struct video_device *vfd = video_devdata(file); 2359 struct v4l2_ext_controls *p = arg; 2360 struct v4l2_fh *vfh = 2361 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2362 2363 p->error_idx = p->count; 2364 if (vfh && vfh->ctrl_handler) 2365 return v4l2_try_ext_ctrls(vfh->ctrl_handler, 2366 vfd, vfd->v4l2_dev->mdev, p); 2367 if (vfd->ctrl_handler) 2368 return v4l2_try_ext_ctrls(vfd->ctrl_handler, 2369 vfd, vfd->v4l2_dev->mdev, p); 2370 if (ops->vidioc_try_ext_ctrls == NULL) 2371 return -ENOTTY; 2372 return check_ext_ctrls(p, VIDIOC_TRY_EXT_CTRLS) ? 2373 ops->vidioc_try_ext_ctrls(file, fh, p) : -EINVAL; 2374 } 2375 2376 /* 2377 * The selection API specified originally that the _MPLANE buffer types 2378 * shouldn't be used. The reasons for this are lost in the mists of time 2379 * (or just really crappy memories). Regardless, this is really annoying 2380 * for userspace. So to keep things simple we map _MPLANE buffer types 2381 * to their 'regular' counterparts before calling the driver. And we 2382 * restore it afterwards. This way applications can use either buffer 2383 * type and drivers don't need to check for both. 2384 */ 2385 static int v4l_g_selection(const struct v4l2_ioctl_ops *ops, 2386 struct file *file, void *fh, void *arg) 2387 { 2388 struct v4l2_selection *p = arg; 2389 u32 old_type = p->type; 2390 int ret; 2391 2392 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2393 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2394 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2395 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2396 ret = ops->vidioc_g_selection(file, fh, p); 2397 p->type = old_type; 2398 return ret; 2399 } 2400 2401 static int v4l_s_selection(const struct v4l2_ioctl_ops *ops, 2402 struct file *file, void *fh, void *arg) 2403 { 2404 struct v4l2_selection *p = arg; 2405 u32 old_type = p->type; 2406 int ret; 2407 2408 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2409 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2410 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2411 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2412 ret = ops->vidioc_s_selection(file, fh, p); 2413 p->type = old_type; 2414 return ret; 2415 } 2416 2417 static int v4l_g_crop(const struct v4l2_ioctl_ops *ops, 2418 struct file *file, void *fh, void *arg) 2419 { 2420 struct video_device *vfd = video_devdata(file); 2421 struct v4l2_crop *p = arg; 2422 struct v4l2_selection s = { 2423 .type = p->type, 2424 }; 2425 int ret; 2426 2427 /* simulate capture crop using selection api */ 2428 2429 /* crop means compose for output devices */ 2430 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2431 s.target = V4L2_SEL_TGT_COMPOSE; 2432 else 2433 s.target = V4L2_SEL_TGT_CROP; 2434 2435 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2436 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2437 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2438 2439 ret = v4l_g_selection(ops, file, fh, &s); 2440 2441 /* copying results to old structure on success */ 2442 if (!ret) 2443 p->c = s.r; 2444 return ret; 2445 } 2446 2447 static int v4l_s_crop(const struct v4l2_ioctl_ops *ops, 2448 struct file *file, void *fh, void *arg) 2449 { 2450 struct video_device *vfd = video_devdata(file); 2451 struct v4l2_crop *p = arg; 2452 struct v4l2_selection s = { 2453 .type = p->type, 2454 .r = p->c, 2455 }; 2456 2457 /* simulate capture crop using selection api */ 2458 2459 /* crop means compose for output devices */ 2460 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2461 s.target = V4L2_SEL_TGT_COMPOSE; 2462 else 2463 s.target = V4L2_SEL_TGT_CROP; 2464 2465 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2466 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2467 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2468 2469 return v4l_s_selection(ops, file, fh, &s); 2470 } 2471 2472 static int v4l_cropcap(const struct v4l2_ioctl_ops *ops, 2473 struct file *file, void *fh, void *arg) 2474 { 2475 struct video_device *vfd = video_devdata(file); 2476 struct v4l2_cropcap *p = arg; 2477 struct v4l2_selection s = { .type = p->type }; 2478 int ret = 0; 2479 2480 /* setting trivial pixelaspect */ 2481 p->pixelaspect.numerator = 1; 2482 p->pixelaspect.denominator = 1; 2483 2484 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2485 s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2486 else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2487 s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2488 2489 /* 2490 * The determine_valid_ioctls() call already should ensure 2491 * that this can never happen, but just in case... 2492 */ 2493 if (WARN_ON(!ops->vidioc_g_selection)) 2494 return -ENOTTY; 2495 2496 if (ops->vidioc_g_pixelaspect) 2497 ret = ops->vidioc_g_pixelaspect(file, fh, s.type, 2498 &p->pixelaspect); 2499 2500 /* 2501 * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the 2502 * square pixel aspect ratio in that case. 2503 */ 2504 if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD) 2505 return ret; 2506 2507 /* Use g_selection() to fill in the bounds and defrect rectangles */ 2508 2509 /* obtaining bounds */ 2510 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2511 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS; 2512 else 2513 s.target = V4L2_SEL_TGT_CROP_BOUNDS; 2514 2515 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2516 s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ? 2517 V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS; 2518 2519 ret = v4l_g_selection(ops, file, fh, &s); 2520 if (ret) 2521 return ret; 2522 p->bounds = s.r; 2523 2524 /* obtaining defrect */ 2525 if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS) 2526 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT; 2527 else 2528 s.target = V4L2_SEL_TGT_CROP_DEFAULT; 2529 2530 ret = v4l_g_selection(ops, file, fh, &s); 2531 if (ret) 2532 return ret; 2533 p->defrect = s.r; 2534 2535 return 0; 2536 } 2537 2538 static int v4l_log_status(const struct v4l2_ioctl_ops *ops, 2539 struct file *file, void *fh, void *arg) 2540 { 2541 struct video_device *vfd = video_devdata(file); 2542 int ret; 2543 2544 if (vfd->v4l2_dev) 2545 pr_info("%s: ================= START STATUS =================\n", 2546 vfd->v4l2_dev->name); 2547 ret = ops->vidioc_log_status(file, fh); 2548 if (vfd->v4l2_dev) 2549 pr_info("%s: ================== END STATUS ==================\n", 2550 vfd->v4l2_dev->name); 2551 return ret; 2552 } 2553 2554 static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops, 2555 struct file *file, void *fh, void *arg) 2556 { 2557 #ifdef CONFIG_VIDEO_ADV_DEBUG 2558 struct v4l2_dbg_register *p = arg; 2559 struct video_device *vfd = video_devdata(file); 2560 struct v4l2_subdev *sd; 2561 int idx = 0; 2562 2563 if (!capable(CAP_SYS_ADMIN)) 2564 return -EPERM; 2565 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2566 if (vfd->v4l2_dev == NULL) 2567 return -EINVAL; 2568 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2569 if (p->match.addr == idx++) 2570 return v4l2_subdev_call(sd, core, g_register, p); 2571 return -EINVAL; 2572 } 2573 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2574 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2575 return ops->vidioc_g_register(file, fh, p); 2576 return -EINVAL; 2577 #else 2578 return -ENOTTY; 2579 #endif 2580 } 2581 2582 static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops, 2583 struct file *file, void *fh, void *arg) 2584 { 2585 #ifdef CONFIG_VIDEO_ADV_DEBUG 2586 const struct v4l2_dbg_register *p = arg; 2587 struct video_device *vfd = video_devdata(file); 2588 struct v4l2_subdev *sd; 2589 int idx = 0; 2590 2591 if (!capable(CAP_SYS_ADMIN)) 2592 return -EPERM; 2593 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2594 if (vfd->v4l2_dev == NULL) 2595 return -EINVAL; 2596 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2597 if (p->match.addr == idx++) 2598 return v4l2_subdev_call(sd, core, s_register, p); 2599 return -EINVAL; 2600 } 2601 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2602 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2603 return ops->vidioc_s_register(file, fh, p); 2604 return -EINVAL; 2605 #else 2606 return -ENOTTY; 2607 #endif 2608 } 2609 2610 static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops, 2611 struct file *file, void *fh, void *arg) 2612 { 2613 #ifdef CONFIG_VIDEO_ADV_DEBUG 2614 struct video_device *vfd = video_devdata(file); 2615 struct v4l2_dbg_chip_info *p = arg; 2616 struct v4l2_subdev *sd; 2617 int idx = 0; 2618 2619 switch (p->match.type) { 2620 case V4L2_CHIP_MATCH_BRIDGE: 2621 if (ops->vidioc_s_register) 2622 p->flags |= V4L2_CHIP_FL_WRITABLE; 2623 if (ops->vidioc_g_register) 2624 p->flags |= V4L2_CHIP_FL_READABLE; 2625 strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name)); 2626 if (ops->vidioc_g_chip_info) 2627 return ops->vidioc_g_chip_info(file, fh, arg); 2628 if (p->match.addr) 2629 return -EINVAL; 2630 return 0; 2631 2632 case V4L2_CHIP_MATCH_SUBDEV: 2633 if (vfd->v4l2_dev == NULL) 2634 break; 2635 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) { 2636 if (p->match.addr != idx++) 2637 continue; 2638 if (sd->ops->core && sd->ops->core->s_register) 2639 p->flags |= V4L2_CHIP_FL_WRITABLE; 2640 if (sd->ops->core && sd->ops->core->g_register) 2641 p->flags |= V4L2_CHIP_FL_READABLE; 2642 strscpy(p->name, sd->name, sizeof(p->name)); 2643 return 0; 2644 } 2645 break; 2646 } 2647 return -EINVAL; 2648 #else 2649 return -ENOTTY; 2650 #endif 2651 } 2652 2653 static int v4l_dqevent(const struct v4l2_ioctl_ops *ops, 2654 struct file *file, void *fh, void *arg) 2655 { 2656 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK); 2657 } 2658 2659 static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops, 2660 struct file *file, void *fh, void *arg) 2661 { 2662 return ops->vidioc_subscribe_event(fh, arg); 2663 } 2664 2665 static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops, 2666 struct file *file, void *fh, void *arg) 2667 { 2668 return ops->vidioc_unsubscribe_event(fh, arg); 2669 } 2670 2671 static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops, 2672 struct file *file, void *fh, void *arg) 2673 { 2674 struct v4l2_sliced_vbi_cap *p = arg; 2675 int ret = check_fmt(file, p->type); 2676 2677 if (ret) 2678 return ret; 2679 2680 /* Clear up to type, everything after type is zeroed already */ 2681 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type)); 2682 2683 return ops->vidioc_g_sliced_vbi_cap(file, fh, p); 2684 } 2685 2686 static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops, 2687 struct file *file, void *fh, void *arg) 2688 { 2689 struct video_device *vfd = video_devdata(file); 2690 struct v4l2_frequency_band *p = arg; 2691 enum v4l2_tuner_type type; 2692 int err; 2693 2694 if (vfd->vfl_type == VFL_TYPE_SDR) { 2695 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 2696 return -EINVAL; 2697 type = p->type; 2698 } else { 2699 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2700 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2701 if (type != p->type) 2702 return -EINVAL; 2703 } 2704 if (ops->vidioc_enum_freq_bands) { 2705 err = ops->vidioc_enum_freq_bands(file, fh, p); 2706 if (err != -ENOTTY) 2707 return err; 2708 } 2709 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) { 2710 struct v4l2_tuner t = { 2711 .index = p->tuner, 2712 .type = type, 2713 }; 2714 2715 if (p->index) 2716 return -EINVAL; 2717 err = ops->vidioc_g_tuner(file, fh, &t); 2718 if (err) 2719 return err; 2720 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2721 p->rangelow = t.rangelow; 2722 p->rangehigh = t.rangehigh; 2723 p->modulation = (type == V4L2_TUNER_RADIO) ? 2724 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2725 return 0; 2726 } 2727 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) { 2728 struct v4l2_modulator m = { 2729 .index = p->tuner, 2730 }; 2731 2732 if (type != V4L2_TUNER_RADIO) 2733 return -EINVAL; 2734 if (p->index) 2735 return -EINVAL; 2736 err = ops->vidioc_g_modulator(file, fh, &m); 2737 if (err) 2738 return err; 2739 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2740 p->rangelow = m.rangelow; 2741 p->rangehigh = m.rangehigh; 2742 p->modulation = (type == V4L2_TUNER_RADIO) ? 2743 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2744 return 0; 2745 } 2746 return -ENOTTY; 2747 } 2748 2749 struct v4l2_ioctl_info { 2750 unsigned int ioctl; 2751 u32 flags; 2752 const char * const name; 2753 int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file, 2754 void *fh, void *p); 2755 void (*debug)(const void *arg, bool write_only); 2756 }; 2757 2758 /* This control needs a priority check */ 2759 #define INFO_FL_PRIO (1 << 0) 2760 /* This control can be valid if the filehandle passes a control handler. */ 2761 #define INFO_FL_CTRL (1 << 1) 2762 /* Queuing ioctl */ 2763 #define INFO_FL_QUEUE (1 << 2) 2764 /* Always copy back result, even on error */ 2765 #define INFO_FL_ALWAYS_COPY (1 << 3) 2766 /* Zero struct from after the field to the end */ 2767 #define INFO_FL_CLEAR(v4l2_struct, field) \ 2768 ((offsetof(struct v4l2_struct, field) + \ 2769 sizeof_field(struct v4l2_struct, field)) << 16) 2770 #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16) 2771 2772 #define DEFINE_V4L_STUB_FUNC(_vidioc) \ 2773 static int v4l_stub_ ## _vidioc( \ 2774 const struct v4l2_ioctl_ops *ops, \ 2775 struct file *file, void *fh, void *p) \ 2776 { \ 2777 return ops->vidioc_ ## _vidioc(file, fh, p); \ 2778 } 2779 2780 #define IOCTL_INFO(_ioctl, _func, _debug, _flags) \ 2781 [_IOC_NR(_ioctl)] = { \ 2782 .ioctl = _ioctl, \ 2783 .flags = _flags, \ 2784 .name = #_ioctl, \ 2785 .func = _func, \ 2786 .debug = _debug, \ 2787 } 2788 2789 DEFINE_V4L_STUB_FUNC(g_fbuf) 2790 DEFINE_V4L_STUB_FUNC(s_fbuf) 2791 DEFINE_V4L_STUB_FUNC(expbuf) 2792 DEFINE_V4L_STUB_FUNC(g_std) 2793 DEFINE_V4L_STUB_FUNC(g_audio) 2794 DEFINE_V4L_STUB_FUNC(s_audio) 2795 DEFINE_V4L_STUB_FUNC(g_edid) 2796 DEFINE_V4L_STUB_FUNC(s_edid) 2797 DEFINE_V4L_STUB_FUNC(g_audout) 2798 DEFINE_V4L_STUB_FUNC(s_audout) 2799 DEFINE_V4L_STUB_FUNC(g_jpegcomp) 2800 DEFINE_V4L_STUB_FUNC(s_jpegcomp) 2801 DEFINE_V4L_STUB_FUNC(enumaudio) 2802 DEFINE_V4L_STUB_FUNC(enumaudout) 2803 DEFINE_V4L_STUB_FUNC(enum_framesizes) 2804 DEFINE_V4L_STUB_FUNC(enum_frameintervals) 2805 DEFINE_V4L_STUB_FUNC(g_enc_index) 2806 DEFINE_V4L_STUB_FUNC(encoder_cmd) 2807 DEFINE_V4L_STUB_FUNC(try_encoder_cmd) 2808 DEFINE_V4L_STUB_FUNC(decoder_cmd) 2809 DEFINE_V4L_STUB_FUNC(try_decoder_cmd) 2810 DEFINE_V4L_STUB_FUNC(s_dv_timings) 2811 DEFINE_V4L_STUB_FUNC(g_dv_timings) 2812 DEFINE_V4L_STUB_FUNC(enum_dv_timings) 2813 DEFINE_V4L_STUB_FUNC(query_dv_timings) 2814 DEFINE_V4L_STUB_FUNC(dv_timings_cap) 2815 2816 static const struct v4l2_ioctl_info v4l2_ioctls[] = { 2817 IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0), 2818 IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, 0), 2819 IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0), 2820 IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO), 2821 IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2822 IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)), 2823 IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0), 2824 IOCTL_INFO(VIDIOC_S_FBUF, v4l_stub_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO), 2825 IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO), 2826 IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE), 2827 IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)), 2828 IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE), 2829 IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2830 IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2831 IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)), 2832 IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO), 2833 IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0), 2834 IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO), 2835 IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)), 2836 IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)), 2837 IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)), 2838 IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL), 2839 IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)), 2840 IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO), 2841 IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0), 2842 IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO), 2843 IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)), 2844 IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)), 2845 IOCTL_INFO(VIDIOC_G_INPUT, v4l_g_input, v4l_print_u32, 0), 2846 IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO), 2847 IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY), 2848 IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY), 2849 IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_g_output, v4l_print_u32, 0), 2850 IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO), 2851 IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)), 2852 IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0), 2853 IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO), 2854 IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)), 2855 IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO), 2856 IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)), 2857 IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO), 2858 IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)), 2859 IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)), 2860 IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO), 2861 IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)), 2862 IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)), 2863 IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0), 2864 IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO), 2865 IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0), 2866 IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0), 2867 IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)), 2868 IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)), 2869 IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0), 2870 IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO), 2871 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)), 2872 IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0), 2873 IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY), 2874 IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL | INFO_FL_ALWAYS_COPY), 2875 IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY), 2876 IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)), 2877 IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)), 2878 IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0), 2879 IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2880 IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2881 IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO), 2882 IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0), 2883 IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0), 2884 IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0), 2885 IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO), 2886 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)), 2887 IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0), 2888 IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0), 2889 IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0), 2890 IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0), 2891 IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2892 IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE), 2893 IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)), 2894 IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY), 2895 IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)), 2896 IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0), 2897 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)), 2898 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)), 2899 }; 2900 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) 2901 2902 static bool v4l2_is_known_ioctl(unsigned int cmd) 2903 { 2904 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2905 return false; 2906 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd; 2907 } 2908 2909 static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, 2910 struct v4l2_fh *vfh, unsigned int cmd, 2911 void *arg) 2912 { 2913 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2914 return vdev->lock; 2915 if (vfh && vfh->m2m_ctx && 2916 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) { 2917 if (vfh->m2m_ctx->q_lock) 2918 return vfh->m2m_ctx->q_lock; 2919 } 2920 if (vdev->queue && vdev->queue->lock && 2921 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) 2922 return vdev->queue->lock; 2923 return vdev->lock; 2924 } 2925 2926 /* Common ioctl debug function. This function can be used by 2927 external ioctl messages as well as internal V4L ioctl */ 2928 void v4l_printk_ioctl(const char *prefix, unsigned int cmd) 2929 { 2930 const char *dir, *type; 2931 2932 if (prefix) 2933 printk(KERN_DEBUG "%s: ", prefix); 2934 2935 switch (_IOC_TYPE(cmd)) { 2936 case 'd': 2937 type = "v4l2_int"; 2938 break; 2939 case 'V': 2940 if (_IOC_NR(cmd) >= V4L2_IOCTLS) { 2941 type = "v4l2"; 2942 break; 2943 } 2944 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name); 2945 return; 2946 default: 2947 type = "unknown"; 2948 break; 2949 } 2950 2951 switch (_IOC_DIR(cmd)) { 2952 case _IOC_NONE: dir = "--"; break; 2953 case _IOC_READ: dir = "r-"; break; 2954 case _IOC_WRITE: dir = "-w"; break; 2955 case _IOC_READ | _IOC_WRITE: dir = "rw"; break; 2956 default: dir = "*ERR*"; break; 2957 } 2958 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)", 2959 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd); 2960 } 2961 EXPORT_SYMBOL(v4l_printk_ioctl); 2962 2963 static long __video_do_ioctl(struct file *file, 2964 unsigned int cmd, void *arg) 2965 { 2966 struct video_device *vfd = video_devdata(file); 2967 struct mutex *req_queue_lock = NULL; 2968 struct mutex *lock; /* ioctl serialization mutex */ 2969 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 2970 bool write_only = false; 2971 struct v4l2_ioctl_info default_info; 2972 const struct v4l2_ioctl_info *info; 2973 void *fh = file->private_data; 2974 struct v4l2_fh *vfh = NULL; 2975 int dev_debug = vfd->dev_debug; 2976 long ret = -ENOTTY; 2977 2978 if (ops == NULL) { 2979 pr_warn("%s: has no ioctl_ops.\n", 2980 video_device_node_name(vfd)); 2981 return ret; 2982 } 2983 2984 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 2985 vfh = file->private_data; 2986 2987 /* 2988 * We need to serialize streamon/off with queueing new requests. 2989 * These ioctls may trigger the cancellation of a streaming 2990 * operation, and that should not be mixed with queueing a new 2991 * request at the same time. 2992 */ 2993 if (v4l2_device_supports_requests(vfd->v4l2_dev) && 2994 (cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF)) { 2995 req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex; 2996 2997 if (mutex_lock_interruptible(req_queue_lock)) 2998 return -ERESTARTSYS; 2999 } 3000 3001 lock = v4l2_ioctl_get_lock(vfd, vfh, cmd, arg); 3002 3003 if (lock && mutex_lock_interruptible(lock)) { 3004 if (req_queue_lock) 3005 mutex_unlock(req_queue_lock); 3006 return -ERESTARTSYS; 3007 } 3008 3009 if (!video_is_registered(vfd)) { 3010 ret = -ENODEV; 3011 goto unlock; 3012 } 3013 3014 if (v4l2_is_known_ioctl(cmd)) { 3015 info = &v4l2_ioctls[_IOC_NR(cmd)]; 3016 3017 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) && 3018 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler)) 3019 goto done; 3020 3021 if (vfh && (info->flags & INFO_FL_PRIO)) { 3022 ret = v4l2_prio_check(vfd->prio, vfh->prio); 3023 if (ret) 3024 goto done; 3025 } 3026 } else { 3027 default_info.ioctl = cmd; 3028 default_info.flags = 0; 3029 default_info.debug = v4l_print_default; 3030 info = &default_info; 3031 } 3032 3033 write_only = _IOC_DIR(cmd) == _IOC_WRITE; 3034 if (info != &default_info) { 3035 ret = info->func(ops, file, fh, arg); 3036 } else if (!ops->vidioc_default) { 3037 ret = -ENOTTY; 3038 } else { 3039 ret = ops->vidioc_default(file, fh, 3040 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0, 3041 cmd, arg); 3042 } 3043 3044 done: 3045 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) { 3046 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) && 3047 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF)) 3048 goto unlock; 3049 3050 v4l_printk_ioctl(video_device_node_name(vfd), cmd); 3051 if (ret < 0) 3052 pr_cont(": error %ld", ret); 3053 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG)) 3054 pr_cont("\n"); 3055 else if (_IOC_DIR(cmd) == _IOC_NONE) 3056 info->debug(arg, write_only); 3057 else { 3058 pr_cont(": "); 3059 info->debug(arg, write_only); 3060 } 3061 } 3062 3063 unlock: 3064 if (lock) 3065 mutex_unlock(lock); 3066 if (req_queue_lock) 3067 mutex_unlock(req_queue_lock); 3068 return ret; 3069 } 3070 3071 static int check_array_args(unsigned int cmd, void *parg, size_t *array_size, 3072 void __user **user_ptr, void ***kernel_ptr) 3073 { 3074 int ret = 0; 3075 3076 switch (cmd) { 3077 case VIDIOC_PREPARE_BUF: 3078 case VIDIOC_QUERYBUF: 3079 case VIDIOC_QBUF: 3080 case VIDIOC_DQBUF: { 3081 struct v4l2_buffer *buf = parg; 3082 3083 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) { 3084 if (buf->length > VIDEO_MAX_PLANES) { 3085 ret = -EINVAL; 3086 break; 3087 } 3088 *user_ptr = (void __user *)buf->m.planes; 3089 *kernel_ptr = (void **)&buf->m.planes; 3090 *array_size = sizeof(struct v4l2_plane) * buf->length; 3091 ret = 1; 3092 } 3093 break; 3094 } 3095 3096 case VIDIOC_G_EDID: 3097 case VIDIOC_S_EDID: { 3098 struct v4l2_edid *edid = parg; 3099 3100 if (edid->blocks) { 3101 if (edid->blocks > 256) { 3102 ret = -EINVAL; 3103 break; 3104 } 3105 *user_ptr = (void __user *)edid->edid; 3106 *kernel_ptr = (void **)&edid->edid; 3107 *array_size = edid->blocks * 128; 3108 ret = 1; 3109 } 3110 break; 3111 } 3112 3113 case VIDIOC_S_EXT_CTRLS: 3114 case VIDIOC_G_EXT_CTRLS: 3115 case VIDIOC_TRY_EXT_CTRLS: { 3116 struct v4l2_ext_controls *ctrls = parg; 3117 3118 if (ctrls->count != 0) { 3119 if (ctrls->count > V4L2_CID_MAX_CTRLS) { 3120 ret = -EINVAL; 3121 break; 3122 } 3123 *user_ptr = (void __user *)ctrls->controls; 3124 *kernel_ptr = (void **)&ctrls->controls; 3125 *array_size = sizeof(struct v4l2_ext_control) 3126 * ctrls->count; 3127 ret = 1; 3128 } 3129 break; 3130 } 3131 case VIDIOC_G_FMT: 3132 case VIDIOC_S_FMT: 3133 case VIDIOC_TRY_FMT: { 3134 struct v4l2_format *fmt = parg; 3135 3136 if (fmt->type != V4L2_BUF_TYPE_VIDEO_OVERLAY && 3137 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY) 3138 break; 3139 if (fmt->fmt.win.clipcount > 2048) 3140 return -EINVAL; 3141 if (!fmt->fmt.win.clipcount) 3142 break; 3143 3144 *user_ptr = (void __user *)fmt->fmt.win.clips; 3145 *kernel_ptr = (void **)&fmt->fmt.win.clips; 3146 *array_size = sizeof(struct v4l2_clip) 3147 * fmt->fmt.win.clipcount; 3148 3149 ret = 1; 3150 break; 3151 } 3152 3153 case VIDIOC_SUBDEV_G_ROUTING: 3154 case VIDIOC_SUBDEV_S_ROUTING: { 3155 struct v4l2_subdev_routing *routing = parg; 3156 3157 if (routing->num_routes > 256) 3158 return -E2BIG; 3159 3160 *user_ptr = u64_to_user_ptr(routing->routes); 3161 *kernel_ptr = (void **)&routing->routes; 3162 *array_size = sizeof(struct v4l2_subdev_route) 3163 * routing->num_routes; 3164 ret = 1; 3165 break; 3166 } 3167 } 3168 3169 return ret; 3170 } 3171 3172 static unsigned int video_translate_cmd(unsigned int cmd) 3173 { 3174 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3175 switch (cmd) { 3176 case VIDIOC_DQEVENT_TIME32: 3177 return VIDIOC_DQEVENT; 3178 case VIDIOC_QUERYBUF_TIME32: 3179 return VIDIOC_QUERYBUF; 3180 case VIDIOC_QBUF_TIME32: 3181 return VIDIOC_QBUF; 3182 case VIDIOC_DQBUF_TIME32: 3183 return VIDIOC_DQBUF; 3184 case VIDIOC_PREPARE_BUF_TIME32: 3185 return VIDIOC_PREPARE_BUF; 3186 } 3187 #endif 3188 if (in_compat_syscall()) 3189 return v4l2_compat_translate_cmd(cmd); 3190 3191 return cmd; 3192 } 3193 3194 static int video_get_user(void __user *arg, void *parg, 3195 unsigned int real_cmd, unsigned int cmd, 3196 bool *always_copy) 3197 { 3198 unsigned int n = _IOC_SIZE(real_cmd); 3199 int err = 0; 3200 3201 if (!(_IOC_DIR(cmd) & _IOC_WRITE)) { 3202 /* read-only ioctl */ 3203 memset(parg, 0, n); 3204 return 0; 3205 } 3206 3207 /* 3208 * In some cases, only a few fields are used as input, 3209 * i.e. when the app sets "index" and then the driver 3210 * fills in the rest of the structure for the thing 3211 * with that index. We only need to copy up the first 3212 * non-input field. 3213 */ 3214 if (v4l2_is_known_ioctl(real_cmd)) { 3215 u32 flags = v4l2_ioctls[_IOC_NR(real_cmd)].flags; 3216 3217 if (flags & INFO_FL_CLEAR_MASK) 3218 n = (flags & INFO_FL_CLEAR_MASK) >> 16; 3219 *always_copy = flags & INFO_FL_ALWAYS_COPY; 3220 } 3221 3222 if (cmd == real_cmd) { 3223 if (copy_from_user(parg, (void __user *)arg, n)) 3224 err = -EFAULT; 3225 } else if (in_compat_syscall()) { 3226 memset(parg, 0, n); 3227 err = v4l2_compat_get_user(arg, parg, cmd); 3228 } else { 3229 memset(parg, 0, n); 3230 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3231 switch (cmd) { 3232 case VIDIOC_QUERYBUF_TIME32: 3233 case VIDIOC_QBUF_TIME32: 3234 case VIDIOC_DQBUF_TIME32: 3235 case VIDIOC_PREPARE_BUF_TIME32: { 3236 struct v4l2_buffer_time32 vb32; 3237 struct v4l2_buffer *vb = parg; 3238 3239 if (copy_from_user(&vb32, arg, sizeof(vb32))) 3240 return -EFAULT; 3241 3242 *vb = (struct v4l2_buffer) { 3243 .index = vb32.index, 3244 .type = vb32.type, 3245 .bytesused = vb32.bytesused, 3246 .flags = vb32.flags, 3247 .field = vb32.field, 3248 .timestamp.tv_sec = vb32.timestamp.tv_sec, 3249 .timestamp.tv_usec = vb32.timestamp.tv_usec, 3250 .timecode = vb32.timecode, 3251 .sequence = vb32.sequence, 3252 .memory = vb32.memory, 3253 .m.userptr = vb32.m.userptr, 3254 .length = vb32.length, 3255 .request_fd = vb32.request_fd, 3256 }; 3257 break; 3258 } 3259 } 3260 #endif 3261 } 3262 3263 /* zero out anything we don't copy from userspace */ 3264 if (!err && n < _IOC_SIZE(real_cmd)) 3265 memset((u8 *)parg + n, 0, _IOC_SIZE(real_cmd) - n); 3266 return err; 3267 } 3268 3269 static int video_put_user(void __user *arg, void *parg, 3270 unsigned int real_cmd, unsigned int cmd) 3271 { 3272 if (!(_IOC_DIR(cmd) & _IOC_READ)) 3273 return 0; 3274 3275 if (cmd == real_cmd) { 3276 /* Copy results into user buffer */ 3277 if (copy_to_user(arg, parg, _IOC_SIZE(cmd))) 3278 return -EFAULT; 3279 return 0; 3280 } 3281 3282 if (in_compat_syscall()) 3283 return v4l2_compat_put_user(arg, parg, cmd); 3284 3285 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3286 switch (cmd) { 3287 case VIDIOC_DQEVENT_TIME32: { 3288 struct v4l2_event *ev = parg; 3289 struct v4l2_event_time32 ev32; 3290 3291 memset(&ev32, 0, sizeof(ev32)); 3292 3293 ev32.type = ev->type; 3294 ev32.pending = ev->pending; 3295 ev32.sequence = ev->sequence; 3296 ev32.timestamp.tv_sec = ev->timestamp.tv_sec; 3297 ev32.timestamp.tv_nsec = ev->timestamp.tv_nsec; 3298 ev32.id = ev->id; 3299 3300 memcpy(&ev32.u, &ev->u, sizeof(ev->u)); 3301 memcpy(&ev32.reserved, &ev->reserved, sizeof(ev->reserved)); 3302 3303 if (copy_to_user(arg, &ev32, sizeof(ev32))) 3304 return -EFAULT; 3305 break; 3306 } 3307 case VIDIOC_QUERYBUF_TIME32: 3308 case VIDIOC_QBUF_TIME32: 3309 case VIDIOC_DQBUF_TIME32: 3310 case VIDIOC_PREPARE_BUF_TIME32: { 3311 struct v4l2_buffer *vb = parg; 3312 struct v4l2_buffer_time32 vb32; 3313 3314 memset(&vb32, 0, sizeof(vb32)); 3315 3316 vb32.index = vb->index; 3317 vb32.type = vb->type; 3318 vb32.bytesused = vb->bytesused; 3319 vb32.flags = vb->flags; 3320 vb32.field = vb->field; 3321 vb32.timestamp.tv_sec = vb->timestamp.tv_sec; 3322 vb32.timestamp.tv_usec = vb->timestamp.tv_usec; 3323 vb32.timecode = vb->timecode; 3324 vb32.sequence = vb->sequence; 3325 vb32.memory = vb->memory; 3326 vb32.m.userptr = vb->m.userptr; 3327 vb32.length = vb->length; 3328 vb32.request_fd = vb->request_fd; 3329 3330 if (copy_to_user(arg, &vb32, sizeof(vb32))) 3331 return -EFAULT; 3332 break; 3333 } 3334 } 3335 #endif 3336 3337 return 0; 3338 } 3339 3340 long 3341 video_usercopy(struct file *file, unsigned int orig_cmd, unsigned long arg, 3342 v4l2_kioctl func) 3343 { 3344 char sbuf[128]; 3345 void *mbuf = NULL, *array_buf = NULL; 3346 void *parg = (void *)arg; 3347 long err = -EINVAL; 3348 bool has_array_args; 3349 bool always_copy = false; 3350 size_t array_size = 0; 3351 void __user *user_ptr = NULL; 3352 void **kernel_ptr = NULL; 3353 unsigned int cmd = video_translate_cmd(orig_cmd); 3354 const size_t ioc_size = _IOC_SIZE(cmd); 3355 3356 /* Copy arguments into temp kernel buffer */ 3357 if (_IOC_DIR(cmd) != _IOC_NONE) { 3358 if (ioc_size <= sizeof(sbuf)) { 3359 parg = sbuf; 3360 } else { 3361 /* too big to allocate from stack */ 3362 mbuf = kmalloc(ioc_size, GFP_KERNEL); 3363 if (NULL == mbuf) 3364 return -ENOMEM; 3365 parg = mbuf; 3366 } 3367 3368 err = video_get_user((void __user *)arg, parg, cmd, 3369 orig_cmd, &always_copy); 3370 if (err) 3371 goto out; 3372 } 3373 3374 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr); 3375 if (err < 0) 3376 goto out; 3377 has_array_args = err; 3378 3379 if (has_array_args) { 3380 array_buf = kvmalloc(array_size, GFP_KERNEL); 3381 err = -ENOMEM; 3382 if (array_buf == NULL) 3383 goto out; 3384 if (in_compat_syscall()) 3385 err = v4l2_compat_get_array_args(file, array_buf, 3386 user_ptr, array_size, 3387 orig_cmd, parg); 3388 else 3389 err = copy_from_user(array_buf, user_ptr, array_size) ? 3390 -EFAULT : 0; 3391 if (err) 3392 goto out; 3393 *kernel_ptr = array_buf; 3394 } 3395 3396 /* Handles IOCTL */ 3397 err = func(file, cmd, parg); 3398 if (err == -ENOTTY || err == -ENOIOCTLCMD) { 3399 err = -ENOTTY; 3400 goto out; 3401 } 3402 3403 if (err == 0) { 3404 if (cmd == VIDIOC_DQBUF) 3405 trace_v4l2_dqbuf(video_devdata(file)->minor, parg); 3406 else if (cmd == VIDIOC_QBUF) 3407 trace_v4l2_qbuf(video_devdata(file)->minor, parg); 3408 } 3409 3410 /* 3411 * Some ioctls can return an error, but still have valid 3412 * results that must be returned. 3413 * 3414 * FIXME: subdev IOCTLS are partially handled here and partially in 3415 * v4l2-subdev.c and the 'always_copy' flag can only be set for IOCTLS 3416 * defined here as part of the 'v4l2_ioctls' array. As 3417 * VIDIOC_SUBDEV_G_ROUTING needs to return results to applications even 3418 * in case of failure, but it is not defined here as part of the 3419 * 'v4l2_ioctls' array, insert an ad-hoc check to address that. 3420 */ 3421 if (err < 0 && !always_copy && cmd != VIDIOC_SUBDEV_G_ROUTING) 3422 goto out; 3423 3424 if (has_array_args) { 3425 *kernel_ptr = (void __force *)user_ptr; 3426 if (in_compat_syscall()) { 3427 int put_err; 3428 3429 put_err = v4l2_compat_put_array_args(file, user_ptr, 3430 array_buf, 3431 array_size, 3432 orig_cmd, parg); 3433 if (put_err) 3434 err = put_err; 3435 } else if (copy_to_user(user_ptr, array_buf, array_size)) { 3436 err = -EFAULT; 3437 } 3438 } 3439 3440 if (video_put_user((void __user *)arg, parg, cmd, orig_cmd)) 3441 err = -EFAULT; 3442 out: 3443 kvfree(array_buf); 3444 kfree(mbuf); 3445 return err; 3446 } 3447 3448 long video_ioctl2(struct file *file, 3449 unsigned int cmd, unsigned long arg) 3450 { 3451 return video_usercopy(file, cmd, arg, __video_do_ioctl); 3452 } 3453 EXPORT_SYMBOL(video_ioctl2); 3454