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/videodev2.h> 20 21 #include <media/media-device.h> /* for media_set_bus_info() */ 22 #include <media/v4l2-common.h> 23 #include <media/v4l2-ioctl.h> 24 #include <media/v4l2-ctrls.h> 25 #include <media/v4l2-fh.h> 26 #include <media/v4l2-event.h> 27 #include <media/v4l2-device.h> 28 #include <media/videobuf2-v4l2.h> 29 #include <media/v4l2-mc.h> 30 #include <media/v4l2-mem2mem.h> 31 32 #include <trace/events/v4l2.h> 33 34 #define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls) 35 36 struct std_descr { 37 v4l2_std_id std; 38 const char *descr; 39 }; 40 41 static const struct std_descr standards[] = { 42 { V4L2_STD_NTSC, "NTSC" }, 43 { V4L2_STD_NTSC_M, "NTSC-M" }, 44 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" }, 45 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" }, 46 { V4L2_STD_NTSC_443, "NTSC-443" }, 47 { V4L2_STD_PAL, "PAL" }, 48 { V4L2_STD_PAL_BG, "PAL-BG" }, 49 { V4L2_STD_PAL_B, "PAL-B" }, 50 { V4L2_STD_PAL_B1, "PAL-B1" }, 51 { V4L2_STD_PAL_G, "PAL-G" }, 52 { V4L2_STD_PAL_H, "PAL-H" }, 53 { V4L2_STD_PAL_I, "PAL-I" }, 54 { V4L2_STD_PAL_DK, "PAL-DK" }, 55 { V4L2_STD_PAL_D, "PAL-D" }, 56 { V4L2_STD_PAL_D1, "PAL-D1" }, 57 { V4L2_STD_PAL_K, "PAL-K" }, 58 { V4L2_STD_PAL_M, "PAL-M" }, 59 { V4L2_STD_PAL_N, "PAL-N" }, 60 { V4L2_STD_PAL_Nc, "PAL-Nc" }, 61 { V4L2_STD_PAL_60, "PAL-60" }, 62 { V4L2_STD_SECAM, "SECAM" }, 63 { V4L2_STD_SECAM_B, "SECAM-B" }, 64 { V4L2_STD_SECAM_G, "SECAM-G" }, 65 { V4L2_STD_SECAM_H, "SECAM-H" }, 66 { V4L2_STD_SECAM_DK, "SECAM-DK" }, 67 { V4L2_STD_SECAM_D, "SECAM-D" }, 68 { V4L2_STD_SECAM_K, "SECAM-K" }, 69 { V4L2_STD_SECAM_K1, "SECAM-K1" }, 70 { V4L2_STD_SECAM_L, "SECAM-L" }, 71 { V4L2_STD_SECAM_LC, "SECAM-Lc" }, 72 { 0, "Unknown" } 73 }; 74 75 /* video4linux standard ID conversion to standard name 76 */ 77 const char *v4l2_norm_to_name(v4l2_std_id id) 78 { 79 u32 myid = id; 80 int i; 81 82 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle 83 64 bit comparisons. So, on that architecture, with some gcc 84 variants, compilation fails. Currently, the max value is 30bit wide. 85 */ 86 BUG_ON(myid != id); 87 88 for (i = 0; standards[i].std; i++) 89 if (myid == standards[i].std) 90 break; 91 return standards[i].descr; 92 } 93 EXPORT_SYMBOL(v4l2_norm_to_name); 94 95 /* Returns frame period for the given standard */ 96 void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod) 97 { 98 if (id & V4L2_STD_525_60) { 99 frameperiod->numerator = 1001; 100 frameperiod->denominator = 30000; 101 } else { 102 frameperiod->numerator = 1; 103 frameperiod->denominator = 25; 104 } 105 } 106 EXPORT_SYMBOL(v4l2_video_std_frame_period); 107 108 /* Fill in the fields of a v4l2_standard structure according to the 109 'id' and 'transmission' parameters. Returns negative on error. */ 110 int v4l2_video_std_construct(struct v4l2_standard *vs, 111 int id, const char *name) 112 { 113 vs->id = id; 114 v4l2_video_std_frame_period(id, &vs->frameperiod); 115 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625; 116 strscpy(vs->name, name, sizeof(vs->name)); 117 return 0; 118 } 119 EXPORT_SYMBOL(v4l2_video_std_construct); 120 121 /* Fill in the fields of a v4l2_standard structure according to the 122 * 'id' and 'vs->index' parameters. Returns negative on error. */ 123 int v4l_video_std_enumstd(struct v4l2_standard *vs, v4l2_std_id id) 124 { 125 v4l2_std_id curr_id = 0; 126 unsigned int index = vs->index, i, j = 0; 127 const char *descr = ""; 128 129 /* Return -ENODATA if the id for the current input 130 or output is 0, meaning that it doesn't support this API. */ 131 if (id == 0) 132 return -ENODATA; 133 134 /* Return norm array in a canonical way */ 135 for (i = 0; i <= index && id; i++) { 136 /* last std value in the standards array is 0, so this 137 while always ends there since (id & 0) == 0. */ 138 while ((id & standards[j].std) != standards[j].std) 139 j++; 140 curr_id = standards[j].std; 141 descr = standards[j].descr; 142 j++; 143 if (curr_id == 0) 144 break; 145 if (curr_id != V4L2_STD_PAL && 146 curr_id != V4L2_STD_SECAM && 147 curr_id != V4L2_STD_NTSC) 148 id &= ~curr_id; 149 } 150 if (i <= index) 151 return -EINVAL; 152 153 v4l2_video_std_construct(vs, curr_id, descr); 154 return 0; 155 } 156 157 /* ----------------------------------------------------------------- */ 158 /* some arrays for pretty-printing debug messages of enum types */ 159 160 const char *v4l2_field_names[] = { 161 [V4L2_FIELD_ANY] = "any", 162 [V4L2_FIELD_NONE] = "none", 163 [V4L2_FIELD_TOP] = "top", 164 [V4L2_FIELD_BOTTOM] = "bottom", 165 [V4L2_FIELD_INTERLACED] = "interlaced", 166 [V4L2_FIELD_SEQ_TB] = "seq-tb", 167 [V4L2_FIELD_SEQ_BT] = "seq-bt", 168 [V4L2_FIELD_ALTERNATE] = "alternate", 169 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb", 170 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt", 171 }; 172 EXPORT_SYMBOL(v4l2_field_names); 173 174 const char *v4l2_type_names[] = { 175 [0] = "0", 176 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap", 177 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay", 178 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out", 179 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap", 180 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out", 181 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap", 182 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out", 183 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay", 184 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane", 185 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane", 186 [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap", 187 [V4L2_BUF_TYPE_SDR_OUTPUT] = "sdr-out", 188 [V4L2_BUF_TYPE_META_CAPTURE] = "meta-cap", 189 [V4L2_BUF_TYPE_META_OUTPUT] = "meta-out", 190 }; 191 EXPORT_SYMBOL(v4l2_type_names); 192 193 static const char *v4l2_memory_names[] = { 194 [V4L2_MEMORY_MMAP] = "mmap", 195 [V4L2_MEMORY_USERPTR] = "userptr", 196 [V4L2_MEMORY_OVERLAY] = "overlay", 197 [V4L2_MEMORY_DMABUF] = "dmabuf", 198 }; 199 200 #define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown") 201 202 /* ------------------------------------------------------------------ */ 203 /* debug help functions */ 204 205 static void v4l_print_querycap(const void *arg, bool write_only) 206 { 207 const struct v4l2_capability *p = arg; 208 209 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, capabilities=0x%08x, device_caps=0x%08x\n", 210 (int)sizeof(p->driver), p->driver, 211 (int)sizeof(p->card), p->card, 212 (int)sizeof(p->bus_info), p->bus_info, 213 p->version, p->capabilities, p->device_caps); 214 } 215 216 static void v4l_print_enuminput(const void *arg, bool write_only) 217 { 218 const struct v4l2_input *p = arg; 219 220 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, std=0x%08Lx, status=0x%x, capabilities=0x%x\n", 221 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, 222 p->tuner, (unsigned long long)p->std, p->status, 223 p->capabilities); 224 } 225 226 static void v4l_print_enumoutput(const void *arg, bool write_only) 227 { 228 const struct v4l2_output *p = arg; 229 230 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, modulator=%u, std=0x%08Lx, capabilities=0x%x\n", 231 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, 232 p->modulator, (unsigned long long)p->std, p->capabilities); 233 } 234 235 static void v4l_print_audio(const void *arg, bool write_only) 236 { 237 const struct v4l2_audio *p = arg; 238 239 if (write_only) 240 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode); 241 else 242 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", 243 p->index, (int)sizeof(p->name), p->name, 244 p->capability, p->mode); 245 } 246 247 static void v4l_print_audioout(const void *arg, bool write_only) 248 { 249 const struct v4l2_audioout *p = arg; 250 251 if (write_only) 252 pr_cont("index=%u\n", p->index); 253 else 254 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", 255 p->index, (int)sizeof(p->name), p->name, 256 p->capability, p->mode); 257 } 258 259 static void v4l_print_fmtdesc(const void *arg, bool write_only) 260 { 261 const struct v4l2_fmtdesc *p = arg; 262 263 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%p4cc, mbus_code=0x%04x, description='%.*s'\n", 264 p->index, prt_names(p->type, v4l2_type_names), 265 p->flags, &p->pixelformat, p->mbus_code, 266 (int)sizeof(p->description), p->description); 267 } 268 269 static void v4l_print_format(const void *arg, bool write_only) 270 { 271 const struct v4l2_format *p = arg; 272 const struct v4l2_pix_format *pix; 273 const struct v4l2_pix_format_mplane *mp; 274 const struct v4l2_vbi_format *vbi; 275 const struct v4l2_sliced_vbi_format *sliced; 276 const struct v4l2_window *win; 277 const struct v4l2_meta_format *meta; 278 u32 pixelformat; 279 u32 planes; 280 unsigned i; 281 282 pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); 283 switch (p->type) { 284 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 285 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 286 pix = &p->fmt.pix; 287 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", 288 pix->width, pix->height, &pix->pixelformat, 289 prt_names(pix->field, v4l2_field_names), 290 pix->bytesperline, pix->sizeimage, 291 pix->colorspace, pix->flags, pix->ycbcr_enc, 292 pix->quantization, pix->xfer_func); 293 break; 294 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 295 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 296 mp = &p->fmt.pix_mp; 297 pixelformat = mp->pixelformat; 298 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", 299 mp->width, mp->height, &pixelformat, 300 prt_names(mp->field, v4l2_field_names), 301 mp->colorspace, mp->num_planes, mp->flags, 302 mp->ycbcr_enc, mp->quantization, mp->xfer_func); 303 planes = min_t(u32, mp->num_planes, VIDEO_MAX_PLANES); 304 for (i = 0; i < planes; i++) 305 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i, 306 mp->plane_fmt[i].bytesperline, 307 mp->plane_fmt[i].sizeimage); 308 break; 309 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 310 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 311 win = &p->fmt.win; 312 /* Note: we can't print the clip list here since the clips 313 * pointer is a userspace pointer, not a kernelspace 314 * pointer. */ 315 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", 316 win->w.width, win->w.height, win->w.left, win->w.top, 317 prt_names(win->field, v4l2_field_names), 318 win->chromakey, win->clipcount, win->clips, 319 win->bitmap, win->global_alpha); 320 break; 321 case V4L2_BUF_TYPE_VBI_CAPTURE: 322 case V4L2_BUF_TYPE_VBI_OUTPUT: 323 vbi = &p->fmt.vbi; 324 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%p4cc, start=%u,%u, count=%u,%u\n", 325 vbi->sampling_rate, vbi->offset, 326 vbi->samples_per_line, &vbi->sample_format, 327 vbi->start[0], vbi->start[1], 328 vbi->count[0], vbi->count[1]); 329 break; 330 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 331 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 332 sliced = &p->fmt.sliced; 333 pr_cont(", service_set=0x%08x, io_size=%d\n", 334 sliced->service_set, sliced->io_size); 335 for (i = 0; i < 24; i++) 336 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, 337 sliced->service_lines[0][i], 338 sliced->service_lines[1][i]); 339 break; 340 case V4L2_BUF_TYPE_SDR_CAPTURE: 341 case V4L2_BUF_TYPE_SDR_OUTPUT: 342 pixelformat = p->fmt.sdr.pixelformat; 343 pr_cont(", pixelformat=%p4cc\n", &pixelformat); 344 break; 345 case V4L2_BUF_TYPE_META_CAPTURE: 346 case V4L2_BUF_TYPE_META_OUTPUT: 347 meta = &p->fmt.meta; 348 pixelformat = meta->dataformat; 349 pr_cont(", dataformat=%p4cc, buffersize=%u\n", 350 &pixelformat, meta->buffersize); 351 break; 352 } 353 } 354 355 static void v4l_print_framebuffer(const void *arg, bool write_only) 356 { 357 const struct v4l2_framebuffer *p = arg; 358 359 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, height=%u, pixelformat=%p4cc, bytesperline=%u, sizeimage=%u, colorspace=%d\n", 360 p->capability, p->flags, p->base, p->fmt.width, p->fmt.height, 361 &p->fmt.pixelformat, p->fmt.bytesperline, p->fmt.sizeimage, 362 p->fmt.colorspace); 363 } 364 365 static void v4l_print_buftype(const void *arg, bool write_only) 366 { 367 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names)); 368 } 369 370 static void v4l_print_modulator(const void *arg, bool write_only) 371 { 372 const struct v4l2_modulator *p = arg; 373 374 if (write_only) 375 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans); 376 else 377 pr_cont("index=%u, name=%.*s, capability=0x%x, rangelow=%u, rangehigh=%u, txsubchans=0x%x\n", 378 p->index, (int)sizeof(p->name), p->name, p->capability, 379 p->rangelow, p->rangehigh, p->txsubchans); 380 } 381 382 static void v4l_print_tuner(const void *arg, bool write_only) 383 { 384 const struct v4l2_tuner *p = arg; 385 386 if (write_only) 387 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode); 388 else 389 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", 390 p->index, (int)sizeof(p->name), p->name, p->type, 391 p->capability, p->rangelow, 392 p->rangehigh, p->signal, p->afc, 393 p->rxsubchans, p->audmode); 394 } 395 396 static void v4l_print_frequency(const void *arg, bool write_only) 397 { 398 const struct v4l2_frequency *p = arg; 399 400 pr_cont("tuner=%u, type=%u, frequency=%u\n", 401 p->tuner, p->type, p->frequency); 402 } 403 404 static void v4l_print_standard(const void *arg, bool write_only) 405 { 406 const struct v4l2_standard *p = arg; 407 408 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, framelines=%u\n", 409 p->index, 410 (unsigned long long)p->id, (int)sizeof(p->name), p->name, 411 p->frameperiod.numerator, 412 p->frameperiod.denominator, 413 p->framelines); 414 } 415 416 static void v4l_print_std(const void *arg, bool write_only) 417 { 418 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg); 419 } 420 421 static void v4l_print_hw_freq_seek(const void *arg, bool write_only) 422 { 423 const struct v4l2_hw_freq_seek *p = arg; 424 425 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, rangelow=%u, rangehigh=%u\n", 426 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing, 427 p->rangelow, p->rangehigh); 428 } 429 430 static void v4l_print_requestbuffers(const void *arg, bool write_only) 431 { 432 const struct v4l2_requestbuffers *p = arg; 433 434 pr_cont("count=%d, type=%s, memory=%s\n", 435 p->count, 436 prt_names(p->type, v4l2_type_names), 437 prt_names(p->memory, v4l2_memory_names)); 438 } 439 440 static void v4l_print_buffer(const void *arg, bool write_only) 441 { 442 const struct v4l2_buffer *p = arg; 443 const struct v4l2_timecode *tc = &p->timecode; 444 const struct v4l2_plane *plane; 445 int i; 446 447 pr_cont("%02d:%02d:%02d.%06ld index=%d, type=%s, request_fd=%d, flags=0x%08x, field=%s, sequence=%d, memory=%s", 448 (int)p->timestamp.tv_sec / 3600, 449 ((int)p->timestamp.tv_sec / 60) % 60, 450 ((int)p->timestamp.tv_sec % 60), 451 (long)p->timestamp.tv_usec, 452 p->index, 453 prt_names(p->type, v4l2_type_names), p->request_fd, 454 p->flags, prt_names(p->field, v4l2_field_names), 455 p->sequence, prt_names(p->memory, v4l2_memory_names)); 456 457 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) { 458 pr_cont("\n"); 459 for (i = 0; i < p->length; ++i) { 460 plane = &p->m.planes[i]; 461 printk(KERN_DEBUG 462 "plane %d: bytesused=%d, data_offset=0x%08x, offset/userptr=0x%lx, length=%d\n", 463 i, plane->bytesused, plane->data_offset, 464 plane->m.userptr, plane->length); 465 } 466 } else { 467 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n", 468 p->bytesused, p->m.userptr, p->length); 469 } 470 471 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, flags=0x%08x, frames=%d, userbits=0x%08x\n", 472 tc->hours, tc->minutes, tc->seconds, 473 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits); 474 } 475 476 static void v4l_print_exportbuffer(const void *arg, bool write_only) 477 { 478 const struct v4l2_exportbuffer *p = arg; 479 480 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n", 481 p->fd, prt_names(p->type, v4l2_type_names), 482 p->index, p->plane, p->flags); 483 } 484 485 static void v4l_print_create_buffers(const void *arg, bool write_only) 486 { 487 const struct v4l2_create_buffers *p = arg; 488 489 pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, ", 490 p->index, p->count, prt_names(p->memory, v4l2_memory_names), 491 p->capabilities); 492 v4l_print_format(&p->format, write_only); 493 } 494 495 static void v4l_print_streamparm(const void *arg, bool write_only) 496 { 497 const struct v4l2_streamparm *p = arg; 498 499 pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); 500 501 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 502 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) { 503 const struct v4l2_captureparm *c = &p->parm.capture; 504 505 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, extendedmode=%d, readbuffers=%d\n", 506 c->capability, c->capturemode, 507 c->timeperframe.numerator, c->timeperframe.denominator, 508 c->extendedmode, c->readbuffers); 509 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT || 510 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { 511 const struct v4l2_outputparm *c = &p->parm.output; 512 513 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, extendedmode=%d, writebuffers=%d\n", 514 c->capability, c->outputmode, 515 c->timeperframe.numerator, c->timeperframe.denominator, 516 c->extendedmode, c->writebuffers); 517 } else { 518 pr_cont("\n"); 519 } 520 } 521 522 static void v4l_print_queryctrl(const void *arg, bool write_only) 523 { 524 const struct v4l2_queryctrl *p = arg; 525 526 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, step=%d, default=%d, flags=0x%08x\n", 527 p->id, p->type, (int)sizeof(p->name), p->name, 528 p->minimum, p->maximum, 529 p->step, p->default_value, p->flags); 530 } 531 532 static void v4l_print_query_ext_ctrl(const void *arg, bool write_only) 533 { 534 const struct v4l2_query_ext_ctrl *p = arg; 535 536 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", 537 p->id, p->type, (int)sizeof(p->name), p->name, 538 p->minimum, p->maximum, 539 p->step, p->default_value, p->flags, 540 p->elem_size, p->elems, p->nr_of_dims, 541 p->dims[0], p->dims[1], p->dims[2], p->dims[3]); 542 } 543 544 static void v4l_print_querymenu(const void *arg, bool write_only) 545 { 546 const struct v4l2_querymenu *p = arg; 547 548 pr_cont("id=0x%x, index=%d\n", p->id, p->index); 549 } 550 551 static void v4l_print_control(const void *arg, bool write_only) 552 { 553 const struct v4l2_control *p = arg; 554 const char *name = v4l2_ctrl_get_name(p->id); 555 556 if (name) 557 pr_cont("name=%s, ", name); 558 pr_cont("id=0x%x, value=%d\n", p->id, p->value); 559 } 560 561 static void v4l_print_ext_controls(const void *arg, bool write_only) 562 { 563 const struct v4l2_ext_controls *p = arg; 564 int i; 565 566 pr_cont("which=0x%x, count=%d, error_idx=%d, request_fd=%d", 567 p->which, p->count, p->error_idx, p->request_fd); 568 for (i = 0; i < p->count; i++) { 569 unsigned int id = p->controls[i].id; 570 const char *name = v4l2_ctrl_get_name(id); 571 572 if (name) 573 pr_cont(", name=%s", name); 574 if (!p->controls[i].size) 575 pr_cont(", id/val=0x%x/0x%x", id, p->controls[i].value); 576 else 577 pr_cont(", id/size=0x%x/%u", id, p->controls[i].size); 578 } 579 pr_cont("\n"); 580 } 581 582 static void v4l_print_cropcap(const void *arg, bool write_only) 583 { 584 const struct v4l2_cropcap *p = arg; 585 586 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, defrect wxh=%dx%d, x,y=%d,%d, pixelaspect %d/%d\n", 587 prt_names(p->type, v4l2_type_names), 588 p->bounds.width, p->bounds.height, 589 p->bounds.left, p->bounds.top, 590 p->defrect.width, p->defrect.height, 591 p->defrect.left, p->defrect.top, 592 p->pixelaspect.numerator, p->pixelaspect.denominator); 593 } 594 595 static void v4l_print_crop(const void *arg, bool write_only) 596 { 597 const struct v4l2_crop *p = arg; 598 599 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n", 600 prt_names(p->type, v4l2_type_names), 601 p->c.width, p->c.height, 602 p->c.left, p->c.top); 603 } 604 605 static void v4l_print_selection(const void *arg, bool write_only) 606 { 607 const struct v4l2_selection *p = arg; 608 609 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n", 610 prt_names(p->type, v4l2_type_names), 611 p->target, p->flags, 612 p->r.width, p->r.height, p->r.left, p->r.top); 613 } 614 615 static void v4l_print_jpegcompression(const void *arg, bool write_only) 616 { 617 const struct v4l2_jpegcompression *p = arg; 618 619 pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n", 620 p->quality, p->APPn, p->APP_len, 621 p->COM_len, p->jpeg_markers); 622 } 623 624 static void v4l_print_enc_idx(const void *arg, bool write_only) 625 { 626 const struct v4l2_enc_idx *p = arg; 627 628 pr_cont("entries=%d, entries_cap=%d\n", 629 p->entries, p->entries_cap); 630 } 631 632 static void v4l_print_encoder_cmd(const void *arg, bool write_only) 633 { 634 const struct v4l2_encoder_cmd *p = arg; 635 636 pr_cont("cmd=%d, flags=0x%x\n", 637 p->cmd, p->flags); 638 } 639 640 static void v4l_print_decoder_cmd(const void *arg, bool write_only) 641 { 642 const struct v4l2_decoder_cmd *p = arg; 643 644 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags); 645 646 if (p->cmd == V4L2_DEC_CMD_START) 647 pr_info("speed=%d, format=%u\n", 648 p->start.speed, p->start.format); 649 else if (p->cmd == V4L2_DEC_CMD_STOP) 650 pr_info("pts=%llu\n", p->stop.pts); 651 } 652 653 static void v4l_print_dbg_chip_info(const void *arg, bool write_only) 654 { 655 const struct v4l2_dbg_chip_info *p = arg; 656 657 pr_cont("type=%u, ", p->match.type); 658 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 659 pr_cont("name=%.*s, ", 660 (int)sizeof(p->match.name), p->match.name); 661 else 662 pr_cont("addr=%u, ", p->match.addr); 663 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name); 664 } 665 666 static void v4l_print_dbg_register(const void *arg, bool write_only) 667 { 668 const struct v4l2_dbg_register *p = arg; 669 670 pr_cont("type=%u, ", p->match.type); 671 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 672 pr_cont("name=%.*s, ", 673 (int)sizeof(p->match.name), p->match.name); 674 else 675 pr_cont("addr=%u, ", p->match.addr); 676 pr_cont("reg=0x%llx, val=0x%llx\n", 677 p->reg, p->val); 678 } 679 680 static void v4l_print_dv_timings(const void *arg, bool write_only) 681 { 682 const struct v4l2_dv_timings *p = arg; 683 684 switch (p->type) { 685 case V4L2_DV_BT_656_1120: 686 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", 687 p->bt.interlaced, p->bt.pixelclock, 688 p->bt.width, p->bt.height, 689 p->bt.polarities, p->bt.hfrontporch, 690 p->bt.hsync, p->bt.hbackporch, 691 p->bt.vfrontporch, p->bt.vsync, 692 p->bt.vbackporch, p->bt.il_vfrontporch, 693 p->bt.il_vsync, p->bt.il_vbackporch, 694 p->bt.standards, p->bt.flags); 695 break; 696 default: 697 pr_cont("type=%d\n", p->type); 698 break; 699 } 700 } 701 702 static void v4l_print_enum_dv_timings(const void *arg, bool write_only) 703 { 704 const struct v4l2_enum_dv_timings *p = arg; 705 706 pr_cont("index=%u, ", p->index); 707 v4l_print_dv_timings(&p->timings, write_only); 708 } 709 710 static void v4l_print_dv_timings_cap(const void *arg, bool write_only) 711 { 712 const struct v4l2_dv_timings_cap *p = arg; 713 714 switch (p->type) { 715 case V4L2_DV_BT_656_1120: 716 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n", 717 p->bt.min_width, p->bt.max_width, 718 p->bt.min_height, p->bt.max_height, 719 p->bt.min_pixelclock, p->bt.max_pixelclock, 720 p->bt.standards, p->bt.capabilities); 721 break; 722 default: 723 pr_cont("type=%u\n", p->type); 724 break; 725 } 726 } 727 728 static void v4l_print_frmsizeenum(const void *arg, bool write_only) 729 { 730 const struct v4l2_frmsizeenum *p = arg; 731 732 pr_cont("index=%u, pixelformat=%p4cc, type=%u", 733 p->index, &p->pixel_format, p->type); 734 switch (p->type) { 735 case V4L2_FRMSIZE_TYPE_DISCRETE: 736 pr_cont(", wxh=%ux%u\n", 737 p->discrete.width, p->discrete.height); 738 break; 739 case V4L2_FRMSIZE_TYPE_STEPWISE: 740 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n", 741 p->stepwise.min_width, 742 p->stepwise.min_height, 743 p->stepwise.max_width, 744 p->stepwise.max_height, 745 p->stepwise.step_width, 746 p->stepwise.step_height); 747 break; 748 case V4L2_FRMSIZE_TYPE_CONTINUOUS: 749 default: 750 pr_cont("\n"); 751 break; 752 } 753 } 754 755 static void v4l_print_frmivalenum(const void *arg, bool write_only) 756 { 757 const struct v4l2_frmivalenum *p = arg; 758 759 pr_cont("index=%u, pixelformat=%p4cc, wxh=%ux%u, type=%u", 760 p->index, &p->pixel_format, p->width, p->height, p->type); 761 switch (p->type) { 762 case V4L2_FRMIVAL_TYPE_DISCRETE: 763 pr_cont(", fps=%d/%d\n", 764 p->discrete.numerator, 765 p->discrete.denominator); 766 break; 767 case V4L2_FRMIVAL_TYPE_STEPWISE: 768 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n", 769 p->stepwise.min.numerator, 770 p->stepwise.min.denominator, 771 p->stepwise.max.numerator, 772 p->stepwise.max.denominator, 773 p->stepwise.step.numerator, 774 p->stepwise.step.denominator); 775 break; 776 case V4L2_FRMIVAL_TYPE_CONTINUOUS: 777 default: 778 pr_cont("\n"); 779 break; 780 } 781 } 782 783 static void v4l_print_event(const void *arg, bool write_only) 784 { 785 const struct v4l2_event *p = arg; 786 const struct v4l2_event_ctrl *c; 787 788 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%llu.%9.9llu\n", 789 p->type, p->pending, p->sequence, p->id, 790 p->timestamp.tv_sec, p->timestamp.tv_nsec); 791 switch (p->type) { 792 case V4L2_EVENT_VSYNC: 793 printk(KERN_DEBUG "field=%s\n", 794 prt_names(p->u.vsync.field, v4l2_field_names)); 795 break; 796 case V4L2_EVENT_CTRL: 797 c = &p->u.ctrl; 798 printk(KERN_DEBUG "changes=0x%x, type=%u, ", 799 c->changes, c->type); 800 if (c->type == V4L2_CTRL_TYPE_INTEGER64) 801 pr_cont("value64=%lld, ", c->value64); 802 else 803 pr_cont("value=%d, ", c->value); 804 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n", 805 c->flags, c->minimum, c->maximum, 806 c->step, c->default_value); 807 break; 808 case V4L2_EVENT_FRAME_SYNC: 809 pr_cont("frame_sequence=%u\n", 810 p->u.frame_sync.frame_sequence); 811 break; 812 } 813 } 814 815 static void v4l_print_event_subscription(const void *arg, bool write_only) 816 { 817 const struct v4l2_event_subscription *p = arg; 818 819 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n", 820 p->type, p->id, p->flags); 821 } 822 823 static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only) 824 { 825 const struct v4l2_sliced_vbi_cap *p = arg; 826 int i; 827 828 pr_cont("type=%s, service_set=0x%08x\n", 829 prt_names(p->type, v4l2_type_names), p->service_set); 830 for (i = 0; i < 24; i++) 831 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, 832 p->service_lines[0][i], 833 p->service_lines[1][i]); 834 } 835 836 static void v4l_print_freq_band(const void *arg, bool write_only) 837 { 838 const struct v4l2_frequency_band *p = arg; 839 840 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n", 841 p->tuner, p->type, p->index, 842 p->capability, p->rangelow, 843 p->rangehigh, p->modulation); 844 } 845 846 static void v4l_print_edid(const void *arg, bool write_only) 847 { 848 const struct v4l2_edid *p = arg; 849 850 pr_cont("pad=%u, start_block=%u, blocks=%u\n", 851 p->pad, p->start_block, p->blocks); 852 } 853 854 static void v4l_print_u32(const void *arg, bool write_only) 855 { 856 pr_cont("value=%u\n", *(const u32 *)arg); 857 } 858 859 static void v4l_print_newline(const void *arg, bool write_only) 860 { 861 pr_cont("\n"); 862 } 863 864 static void v4l_print_default(const void *arg, bool write_only) 865 { 866 pr_cont("driver-specific ioctl\n"); 867 } 868 869 static bool check_ext_ctrls(struct v4l2_ext_controls *c, unsigned long ioctl) 870 { 871 __u32 i; 872 873 /* zero the reserved fields */ 874 c->reserved[0] = 0; 875 for (i = 0; i < c->count; i++) 876 c->controls[i].reserved2[0] = 0; 877 878 switch (c->which) { 879 case V4L2_CID_PRIVATE_BASE: 880 /* 881 * V4L2_CID_PRIVATE_BASE cannot be used as control class 882 * when using extended controls. 883 * Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL 884 * is it allowed for backwards compatibility. 885 */ 886 if (ioctl == VIDIOC_G_CTRL || ioctl == VIDIOC_S_CTRL) 887 return false; 888 break; 889 case V4L2_CTRL_WHICH_DEF_VAL: 890 /* Default value cannot be changed */ 891 if (ioctl == VIDIOC_S_EXT_CTRLS || 892 ioctl == VIDIOC_TRY_EXT_CTRLS) { 893 c->error_idx = c->count; 894 return false; 895 } 896 return true; 897 case V4L2_CTRL_WHICH_CUR_VAL: 898 return true; 899 case V4L2_CTRL_WHICH_REQUEST_VAL: 900 c->error_idx = c->count; 901 return false; 902 } 903 904 /* Check that all controls are from the same control class. */ 905 for (i = 0; i < c->count; i++) { 906 if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) { 907 c->error_idx = ioctl == VIDIOC_TRY_EXT_CTRLS ? i : 908 c->count; 909 return false; 910 } 911 } 912 return true; 913 } 914 915 static int check_fmt(struct file *file, enum v4l2_buf_type type) 916 { 917 const u32 vid_caps = V4L2_CAP_VIDEO_CAPTURE | 918 V4L2_CAP_VIDEO_CAPTURE_MPLANE | 919 V4L2_CAP_VIDEO_OUTPUT | 920 V4L2_CAP_VIDEO_OUTPUT_MPLANE | 921 V4L2_CAP_VIDEO_M2M | V4L2_CAP_VIDEO_M2M_MPLANE; 922 const u32 meta_caps = V4L2_CAP_META_CAPTURE | 923 V4L2_CAP_META_OUTPUT; 924 struct video_device *vfd = video_devdata(file); 925 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 926 bool is_vid = vfd->vfl_type == VFL_TYPE_VIDEO && 927 (vfd->device_caps & vid_caps); 928 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI; 929 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; 930 bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; 931 bool is_meta = vfd->vfl_type == VFL_TYPE_VIDEO && 932 (vfd->device_caps & meta_caps); 933 bool is_rx = vfd->vfl_dir != VFL_DIR_TX; 934 bool is_tx = vfd->vfl_dir != VFL_DIR_RX; 935 936 if (ops == NULL) 937 return -EINVAL; 938 939 switch (type) { 940 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 941 if ((is_vid || is_tch) && is_rx && 942 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane)) 943 return 0; 944 break; 945 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 946 if ((is_vid || is_tch) && is_rx && ops->vidioc_g_fmt_vid_cap_mplane) 947 return 0; 948 break; 949 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 950 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay) 951 return 0; 952 break; 953 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 954 if (is_vid && is_tx && 955 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane)) 956 return 0; 957 break; 958 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 959 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane) 960 return 0; 961 break; 962 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 963 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay) 964 return 0; 965 break; 966 case V4L2_BUF_TYPE_VBI_CAPTURE: 967 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap) 968 return 0; 969 break; 970 case V4L2_BUF_TYPE_VBI_OUTPUT: 971 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out) 972 return 0; 973 break; 974 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 975 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap) 976 return 0; 977 break; 978 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 979 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out) 980 return 0; 981 break; 982 case V4L2_BUF_TYPE_SDR_CAPTURE: 983 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap) 984 return 0; 985 break; 986 case V4L2_BUF_TYPE_SDR_OUTPUT: 987 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out) 988 return 0; 989 break; 990 case V4L2_BUF_TYPE_META_CAPTURE: 991 if (is_meta && is_rx && ops->vidioc_g_fmt_meta_cap) 992 return 0; 993 break; 994 case V4L2_BUF_TYPE_META_OUTPUT: 995 if (is_meta && is_tx && ops->vidioc_g_fmt_meta_out) 996 return 0; 997 break; 998 default: 999 break; 1000 } 1001 return -EINVAL; 1002 } 1003 1004 static void v4l_sanitize_colorspace(u32 pixelformat, u32 *colorspace, 1005 u32 *encoding, u32 *quantization, 1006 u32 *xfer_func) 1007 { 1008 bool is_hsv = pixelformat == V4L2_PIX_FMT_HSV24 || 1009 pixelformat == V4L2_PIX_FMT_HSV32; 1010 1011 if (!v4l2_is_colorspace_valid(*colorspace)) { 1012 *colorspace = V4L2_COLORSPACE_DEFAULT; 1013 *encoding = V4L2_YCBCR_ENC_DEFAULT; 1014 *quantization = V4L2_QUANTIZATION_DEFAULT; 1015 *xfer_func = V4L2_XFER_FUNC_DEFAULT; 1016 } 1017 1018 if ((!is_hsv && !v4l2_is_ycbcr_enc_valid(*encoding)) || 1019 (is_hsv && !v4l2_is_hsv_enc_valid(*encoding))) 1020 *encoding = V4L2_YCBCR_ENC_DEFAULT; 1021 1022 if (!v4l2_is_quant_valid(*quantization)) 1023 *quantization = V4L2_QUANTIZATION_DEFAULT; 1024 1025 if (!v4l2_is_xfer_func_valid(*xfer_func)) 1026 *xfer_func = V4L2_XFER_FUNC_DEFAULT; 1027 } 1028 1029 static void v4l_sanitize_format(struct v4l2_format *fmt) 1030 { 1031 unsigned int offset; 1032 1033 /* Make sure num_planes is not bogus */ 1034 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE || 1035 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 1036 fmt->fmt.pix_mp.num_planes = min_t(u32, fmt->fmt.pix_mp.num_planes, 1037 VIDEO_MAX_PLANES); 1038 1039 /* 1040 * The v4l2_pix_format structure has been extended with fields that were 1041 * not previously required to be set to zero by applications. The priv 1042 * field, when set to a magic value, indicates that the extended fields 1043 * are valid. Otherwise they will contain undefined values. To simplify 1044 * the API towards drivers zero the extended fields and set the priv 1045 * field to the magic value when the extended pixel format structure 1046 * isn't used by applications. 1047 */ 1048 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 1049 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { 1050 if (fmt->fmt.pix.priv != V4L2_PIX_FMT_PRIV_MAGIC) { 1051 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1052 1053 offset = offsetof(struct v4l2_pix_format, priv) 1054 + sizeof(fmt->fmt.pix.priv); 1055 memset(((void *)&fmt->fmt.pix) + offset, 0, 1056 sizeof(fmt->fmt.pix) - offset); 1057 } 1058 } 1059 1060 /* Replace invalid colorspace values with defaults. */ 1061 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 1062 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { 1063 v4l_sanitize_colorspace(fmt->fmt.pix.pixelformat, 1064 &fmt->fmt.pix.colorspace, 1065 &fmt->fmt.pix.ycbcr_enc, 1066 &fmt->fmt.pix.quantization, 1067 &fmt->fmt.pix.xfer_func); 1068 } else if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE || 1069 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { 1070 u32 ycbcr_enc = fmt->fmt.pix_mp.ycbcr_enc; 1071 u32 quantization = fmt->fmt.pix_mp.quantization; 1072 u32 xfer_func = fmt->fmt.pix_mp.xfer_func; 1073 1074 v4l_sanitize_colorspace(fmt->fmt.pix_mp.pixelformat, 1075 &fmt->fmt.pix_mp.colorspace, &ycbcr_enc, 1076 &quantization, &xfer_func); 1077 1078 fmt->fmt.pix_mp.ycbcr_enc = ycbcr_enc; 1079 fmt->fmt.pix_mp.quantization = quantization; 1080 fmt->fmt.pix_mp.xfer_func = xfer_func; 1081 } 1082 } 1083 1084 static int v4l_querycap(const struct v4l2_ioctl_ops *ops, 1085 struct file *file, void *fh, void *arg) 1086 { 1087 struct v4l2_capability *cap = (struct v4l2_capability *)arg; 1088 struct video_device *vfd = video_devdata(file); 1089 int ret; 1090 1091 cap->version = LINUX_VERSION_CODE; 1092 cap->device_caps = vfd->device_caps; 1093 cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS; 1094 1095 media_set_bus_info(cap->bus_info, sizeof(cap->bus_info), 1096 vfd->dev_parent); 1097 1098 ret = ops->vidioc_querycap(file, fh, cap); 1099 1100 /* 1101 * Drivers must not change device_caps, so check for this and 1102 * warn if this happened. 1103 */ 1104 WARN_ON(cap->device_caps != vfd->device_caps); 1105 /* 1106 * Check that capabilities is a superset of 1107 * vfd->device_caps | V4L2_CAP_DEVICE_CAPS 1108 */ 1109 WARN_ON((cap->capabilities & 1110 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)) != 1111 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)); 1112 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT; 1113 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT; 1114 1115 return ret; 1116 } 1117 1118 static int v4l_g_input(const struct v4l2_ioctl_ops *ops, 1119 struct file *file, void *fh, void *arg) 1120 { 1121 struct video_device *vfd = video_devdata(file); 1122 1123 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1124 *(int *)arg = 0; 1125 return 0; 1126 } 1127 1128 return ops->vidioc_g_input(file, fh, arg); 1129 } 1130 1131 static int v4l_g_output(const struct v4l2_ioctl_ops *ops, 1132 struct file *file, void *fh, void *arg) 1133 { 1134 struct video_device *vfd = video_devdata(file); 1135 1136 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1137 *(int *)arg = 0; 1138 return 0; 1139 } 1140 1141 return ops->vidioc_g_output(file, fh, arg); 1142 } 1143 1144 static int v4l_s_input(const struct v4l2_ioctl_ops *ops, 1145 struct file *file, void *fh, void *arg) 1146 { 1147 struct video_device *vfd = video_devdata(file); 1148 int ret; 1149 1150 ret = v4l_enable_media_source(vfd); 1151 if (ret) 1152 return ret; 1153 1154 if (vfd->device_caps & V4L2_CAP_IO_MC) 1155 return *(int *)arg ? -EINVAL : 0; 1156 1157 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg); 1158 } 1159 1160 static int v4l_s_output(const struct v4l2_ioctl_ops *ops, 1161 struct file *file, void *fh, void *arg) 1162 { 1163 struct video_device *vfd = video_devdata(file); 1164 1165 if (vfd->device_caps & V4L2_CAP_IO_MC) 1166 return *(int *)arg ? -EINVAL : 0; 1167 1168 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg); 1169 } 1170 1171 static int v4l_g_priority(const struct v4l2_ioctl_ops *ops, 1172 struct file *file, void *fh, void *arg) 1173 { 1174 struct video_device *vfd; 1175 u32 *p = arg; 1176 1177 vfd = video_devdata(file); 1178 *p = v4l2_prio_max(vfd->prio); 1179 return 0; 1180 } 1181 1182 static int v4l_s_priority(const struct v4l2_ioctl_ops *ops, 1183 struct file *file, void *fh, void *arg) 1184 { 1185 struct video_device *vfd; 1186 struct v4l2_fh *vfh; 1187 u32 *p = arg; 1188 1189 vfd = video_devdata(file); 1190 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 1191 return -ENOTTY; 1192 vfh = file->private_data; 1193 return v4l2_prio_change(vfd->prio, &vfh->prio, *p); 1194 } 1195 1196 static int v4l_enuminput(const struct v4l2_ioctl_ops *ops, 1197 struct file *file, void *fh, void *arg) 1198 { 1199 struct video_device *vfd = video_devdata(file); 1200 struct v4l2_input *p = arg; 1201 1202 /* 1203 * We set the flags for CAP_DV_TIMINGS & 1204 * CAP_STD here based on ioctl handler provided by the 1205 * driver. If the driver doesn't support these 1206 * for a specific input, it must override these flags. 1207 */ 1208 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1209 p->capabilities |= V4L2_IN_CAP_STD; 1210 1211 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1212 if (p->index) 1213 return -EINVAL; 1214 strscpy(p->name, vfd->name, sizeof(p->name)); 1215 p->type = V4L2_INPUT_TYPE_CAMERA; 1216 return 0; 1217 } 1218 1219 return ops->vidioc_enum_input(file, fh, p); 1220 } 1221 1222 static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops, 1223 struct file *file, void *fh, void *arg) 1224 { 1225 struct video_device *vfd = video_devdata(file); 1226 struct v4l2_output *p = arg; 1227 1228 /* 1229 * We set the flags for CAP_DV_TIMINGS & 1230 * CAP_STD here based on ioctl handler provided by the 1231 * driver. If the driver doesn't support these 1232 * for a specific output, it must override these flags. 1233 */ 1234 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1235 p->capabilities |= V4L2_OUT_CAP_STD; 1236 1237 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1238 if (p->index) 1239 return -EINVAL; 1240 strscpy(p->name, vfd->name, sizeof(p->name)); 1241 p->type = V4L2_OUTPUT_TYPE_ANALOG; 1242 return 0; 1243 } 1244 1245 return ops->vidioc_enum_output(file, fh, p); 1246 } 1247 1248 static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) 1249 { 1250 const unsigned sz = sizeof(fmt->description); 1251 const char *descr = NULL; 1252 u32 flags = 0; 1253 1254 /* 1255 * We depart from the normal coding style here since the descriptions 1256 * should be aligned so it is easy to see which descriptions will be 1257 * longer than 31 characters (the max length for a description). 1258 * And frankly, this is easier to read anyway. 1259 * 1260 * Note that gcc will use O(log N) comparisons to find the right case. 1261 */ 1262 switch (fmt->pixelformat) { 1263 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1264 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break; 1265 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break; 1266 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break; 1267 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break; 1268 case V4L2_PIX_FMT_RGBA444: descr = "16-bit RGBA 4-4-4-4"; break; 1269 case V4L2_PIX_FMT_RGBX444: descr = "16-bit RGBX 4-4-4-4"; break; 1270 case V4L2_PIX_FMT_ABGR444: descr = "16-bit ABGR 4-4-4-4"; break; 1271 case V4L2_PIX_FMT_XBGR444: descr = "16-bit XBGR 4-4-4-4"; break; 1272 case V4L2_PIX_FMT_BGRA444: descr = "16-bit BGRA 4-4-4-4"; break; 1273 case V4L2_PIX_FMT_BGRX444: descr = "16-bit BGRX 4-4-4-4"; break; 1274 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break; 1275 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break; 1276 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break; 1277 case V4L2_PIX_FMT_ABGR555: descr = "16-bit ABGR 1-5-5-5"; break; 1278 case V4L2_PIX_FMT_XBGR555: descr = "16-bit XBGR 1-5-5-5"; break; 1279 case V4L2_PIX_FMT_RGBA555: descr = "16-bit RGBA 5-5-5-1"; break; 1280 case V4L2_PIX_FMT_RGBX555: descr = "16-bit RGBX 5-5-5-1"; break; 1281 case V4L2_PIX_FMT_BGRA555: descr = "16-bit BGRA 5-5-5-1"; break; 1282 case V4L2_PIX_FMT_BGRX555: descr = "16-bit BGRX 5-5-5-1"; break; 1283 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break; 1284 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break; 1285 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break; 1286 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break; 1287 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break; 1288 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break; 1289 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break; 1290 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break; 1291 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break; 1292 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break; 1293 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break; 1294 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break; 1295 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break; 1296 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break; 1297 case V4L2_PIX_FMT_BGRA32: descr = "32-bit ABGR 8-8-8-8"; break; 1298 case V4L2_PIX_FMT_BGRX32: descr = "32-bit XBGR 8-8-8-8"; break; 1299 case V4L2_PIX_FMT_RGBA32: descr = "32-bit RGBA 8-8-8-8"; break; 1300 case V4L2_PIX_FMT_RGBX32: descr = "32-bit RGBX 8-8-8-8"; break; 1301 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break; 1302 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break; 1303 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break; 1304 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break; 1305 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break; 1306 case V4L2_PIX_FMT_Y14: descr = "14-bit Greyscale"; break; 1307 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break; 1308 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break; 1309 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break; 1310 case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break; 1311 case V4L2_PIX_FMT_IPU3_Y10: descr = "10-bit greyscale (IPU3 Packed)"; break; 1312 case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break; 1313 case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break; 1314 case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break; 1315 case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break; 1316 case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break; 1317 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break; 1318 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break; 1319 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break; 1320 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break; 1321 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break; 1322 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break; 1323 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break; 1324 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break; 1325 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break; 1326 case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break; 1327 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break; 1328 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break; 1329 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break; 1330 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break; 1331 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break; 1332 case V4L2_PIX_FMT_YUV24: descr = "24-bit YUV 4:4:4 8-8-8"; break; 1333 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break; 1334 case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break; 1335 case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break; 1336 case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break; 1337 case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break; 1338 case V4L2_PIX_FMT_YUVA32: descr = "32-bit YUVA 8-8-8-8"; break; 1339 case V4L2_PIX_FMT_YUVX32: descr = "32-bit YUVX 8-8-8-8"; break; 1340 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break; 1341 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break; 1342 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break; 1343 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break; 1344 case V4L2_PIX_FMT_NV12: descr = "Y/UV 4:2:0"; break; 1345 case V4L2_PIX_FMT_NV21: descr = "Y/VU 4:2:0"; break; 1346 case V4L2_PIX_FMT_NV16: descr = "Y/UV 4:2:2"; break; 1347 case V4L2_PIX_FMT_NV61: descr = "Y/VU 4:2:2"; break; 1348 case V4L2_PIX_FMT_NV24: descr = "Y/UV 4:4:4"; break; 1349 case V4L2_PIX_FMT_NV42: descr = "Y/VU 4:4:4"; break; 1350 case V4L2_PIX_FMT_P010: descr = "10-bit Y/UV 4:2:0"; break; 1351 case V4L2_PIX_FMT_NV12_4L4: descr = "Y/UV 4:2:0 (4x4 Linear)"; break; 1352 case V4L2_PIX_FMT_NV12_16L16: descr = "Y/UV 4:2:0 (16x16 Linear)"; break; 1353 case V4L2_PIX_FMT_NV12_32L32: descr = "Y/UV 4:2:0 (32x32 Linear)"; break; 1354 case V4L2_PIX_FMT_P010_4L4: descr = "10-bit Y/UV 4:2:0 (4x4 Linear)"; break; 1355 case V4L2_PIX_FMT_NV12M: descr = "Y/UV 4:2:0 (N-C)"; break; 1356 case V4L2_PIX_FMT_NV21M: descr = "Y/VU 4:2:0 (N-C)"; break; 1357 case V4L2_PIX_FMT_NV16M: descr = "Y/UV 4:2:2 (N-C)"; break; 1358 case V4L2_PIX_FMT_NV61M: descr = "Y/VU 4:2:2 (N-C)"; break; 1359 case V4L2_PIX_FMT_NV12MT: descr = "Y/UV 4:2:0 (64x32 MB, N-C)"; break; 1360 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/UV 4:2:0 (16x16 MB, N-C)"; break; 1361 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break; 1362 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break; 1363 case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break; 1364 case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break; 1365 case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break; 1366 case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break; 1367 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break; 1368 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break; 1369 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break; 1370 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break; 1371 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break; 1372 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break; 1373 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break; 1374 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break; 1375 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break; 1376 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break; 1377 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break; 1378 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break; 1379 case V4L2_PIX_FMT_IPU3_SBGGR10: descr = "10-bit bayer BGGR IPU3 Packed"; break; 1380 case V4L2_PIX_FMT_IPU3_SGBRG10: descr = "10-bit bayer GBRG IPU3 Packed"; break; 1381 case V4L2_PIX_FMT_IPU3_SGRBG10: descr = "10-bit bayer GRBG IPU3 Packed"; break; 1382 case V4L2_PIX_FMT_IPU3_SRGGB10: descr = "10-bit bayer RGGB IPU3 Packed"; break; 1383 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break; 1384 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break; 1385 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break; 1386 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break; 1387 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break; 1388 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break; 1389 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break; 1390 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break; 1391 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break; 1392 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break; 1393 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break; 1394 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break; 1395 case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break; 1396 case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break; 1397 case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break; 1398 case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break; 1399 case V4L2_PIX_FMT_SBGGR14: descr = "14-bit Bayer BGBG/GRGR"; break; 1400 case V4L2_PIX_FMT_SGBRG14: descr = "14-bit Bayer GBGB/RGRG"; break; 1401 case V4L2_PIX_FMT_SGRBG14: descr = "14-bit Bayer GRGR/BGBG"; break; 1402 case V4L2_PIX_FMT_SRGGB14: descr = "14-bit Bayer RGRG/GBGB"; break; 1403 case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break; 1404 case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break; 1405 case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break; 1406 case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break; 1407 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break; 1408 case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break; 1409 case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break; 1410 case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break; 1411 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break; 1412 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break; 1413 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break; 1414 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break; 1415 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break; 1416 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break; 1417 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break; 1418 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break; 1419 case V4L2_PIX_FMT_MM21: descr = "Mediatek 8-bit Block Format"; break; 1420 case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break; 1421 case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break; 1422 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break; 1423 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break; 1424 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break; 1425 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break; 1426 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break; 1427 case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break; 1428 case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break; 1429 case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break; 1430 case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit Signed Deltas"; break; 1431 case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit Signed Deltas"; break; 1432 case V4L2_TCH_FMT_TU16: descr = "16-bit Unsigned Touch Data"; break; 1433 case V4L2_TCH_FMT_TU08: descr = "8-bit Unsigned Touch Data"; break; 1434 case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break; 1435 case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break; 1436 case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break; 1437 case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break; 1438 case V4L2_META_FMT_VIVID: descr = "Vivid Metadata"; break; 1439 case V4L2_META_FMT_RK_ISP1_PARAMS: descr = "Rockchip ISP1 3A Parameters"; break; 1440 case V4L2_META_FMT_RK_ISP1_STAT_3A: descr = "Rockchip ISP1 3A Statistics"; break; 1441 case V4L2_PIX_FMT_NV12_8L128: descr = "NV12 (8x128 Linear)"; break; 1442 case V4L2_PIX_FMT_NV12M_8L128: descr = "NV12M (8x128 Linear)"; break; 1443 case V4L2_PIX_FMT_NV12_10BE_8L128: descr = "10-bit NV12 (8x128 Linear, BE)"; break; 1444 case V4L2_PIX_FMT_NV12M_10BE_8L128: descr = "10-bit NV12M (8x128 Linear, BE)"; break; 1445 1446 default: 1447 /* Compressed formats */ 1448 flags = V4L2_FMT_FLAG_COMPRESSED; 1449 switch (fmt->pixelformat) { 1450 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1451 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break; 1452 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break; 1453 case V4L2_PIX_FMT_DV: descr = "1394"; break; 1454 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break; 1455 case V4L2_PIX_FMT_H264: descr = "H.264"; break; 1456 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break; 1457 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break; 1458 case V4L2_PIX_FMT_H264_SLICE: descr = "H.264 Parsed Slice Data"; break; 1459 case V4L2_PIX_FMT_H263: descr = "H.263"; break; 1460 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break; 1461 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break; 1462 case V4L2_PIX_FMT_MPEG2_SLICE: descr = "MPEG-2 Parsed Slice Data"; break; 1463 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 Part 2 ES"; break; 1464 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break; 1465 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break; 1466 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break; 1467 case V4L2_PIX_FMT_VP8: descr = "VP8"; break; 1468 case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break; 1469 case V4L2_PIX_FMT_VP9: descr = "VP9"; break; 1470 case V4L2_PIX_FMT_VP9_FRAME: descr = "VP9 Frame"; break; 1471 case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */ 1472 case V4L2_PIX_FMT_HEVC_SLICE: descr = "HEVC Parsed Slice Data"; break; 1473 case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */ 1474 case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */ 1475 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break; 1476 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break; 1477 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break; 1478 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break; 1479 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break; 1480 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break; 1481 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break; 1482 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break; 1483 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break; 1484 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break; 1485 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break; 1486 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break; 1487 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break; 1488 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break; 1489 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break; 1490 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break; 1491 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break; 1492 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break; 1493 case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break; 1494 case V4L2_PIX_FMT_QC08C: descr = "QCOM Compressed 8-bit Format"; break; 1495 case V4L2_PIX_FMT_QC10C: descr = "QCOM Compressed 10-bit Format"; break; 1496 case V4L2_PIX_FMT_AJPG: descr = "Aspeed JPEG"; break; 1497 default: 1498 if (fmt->description[0]) 1499 return; 1500 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat); 1501 flags = 0; 1502 snprintf(fmt->description, sz, "%p4cc", 1503 &fmt->pixelformat); 1504 break; 1505 } 1506 } 1507 1508 if (descr) 1509 WARN_ON(strscpy(fmt->description, descr, sz) < 0); 1510 fmt->flags |= flags; 1511 } 1512 1513 static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops, 1514 struct file *file, void *fh, void *arg) 1515 { 1516 struct video_device *vdev = video_devdata(file); 1517 struct v4l2_fmtdesc *p = arg; 1518 int ret = check_fmt(file, p->type); 1519 u32 mbus_code; 1520 u32 cap_mask; 1521 1522 if (ret) 1523 return ret; 1524 ret = -EINVAL; 1525 1526 if (!(vdev->device_caps & V4L2_CAP_IO_MC)) 1527 p->mbus_code = 0; 1528 1529 mbus_code = p->mbus_code; 1530 memset_after(p, 0, type); 1531 p->mbus_code = mbus_code; 1532 1533 switch (p->type) { 1534 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1535 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1536 cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE | 1537 V4L2_CAP_VIDEO_M2M_MPLANE; 1538 if (!!(vdev->device_caps & cap_mask) != 1539 (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) 1540 break; 1541 1542 if (unlikely(!ops->vidioc_enum_fmt_vid_cap)) 1543 break; 1544 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg); 1545 break; 1546 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1547 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay)) 1548 break; 1549 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg); 1550 break; 1551 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1552 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1553 cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE | 1554 V4L2_CAP_VIDEO_M2M_MPLANE; 1555 if (!!(vdev->device_caps & cap_mask) != 1556 (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)) 1557 break; 1558 1559 if (unlikely(!ops->vidioc_enum_fmt_vid_out)) 1560 break; 1561 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg); 1562 break; 1563 case V4L2_BUF_TYPE_SDR_CAPTURE: 1564 if (unlikely(!ops->vidioc_enum_fmt_sdr_cap)) 1565 break; 1566 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg); 1567 break; 1568 case V4L2_BUF_TYPE_SDR_OUTPUT: 1569 if (unlikely(!ops->vidioc_enum_fmt_sdr_out)) 1570 break; 1571 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg); 1572 break; 1573 case V4L2_BUF_TYPE_META_CAPTURE: 1574 if (unlikely(!ops->vidioc_enum_fmt_meta_cap)) 1575 break; 1576 ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg); 1577 break; 1578 case V4L2_BUF_TYPE_META_OUTPUT: 1579 if (unlikely(!ops->vidioc_enum_fmt_meta_out)) 1580 break; 1581 ret = ops->vidioc_enum_fmt_meta_out(file, fh, arg); 1582 break; 1583 } 1584 if (ret == 0) 1585 v4l_fill_fmtdesc(p); 1586 return ret; 1587 } 1588 1589 static void v4l_pix_format_touch(struct v4l2_pix_format *p) 1590 { 1591 /* 1592 * The v4l2_pix_format structure contains fields that make no sense for 1593 * touch. Set them to default values in this case. 1594 */ 1595 1596 p->field = V4L2_FIELD_NONE; 1597 p->colorspace = V4L2_COLORSPACE_RAW; 1598 p->flags = 0; 1599 p->ycbcr_enc = 0; 1600 p->quantization = 0; 1601 p->xfer_func = 0; 1602 } 1603 1604 static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, 1605 struct file *file, void *fh, void *arg) 1606 { 1607 struct v4l2_format *p = arg; 1608 struct video_device *vfd = video_devdata(file); 1609 int ret = check_fmt(file, p->type); 1610 1611 if (ret) 1612 return ret; 1613 1614 /* 1615 * fmt can't be cleared for these overlay types due to the 'clips' 1616 * 'clipcount' and 'bitmap' pointers in struct v4l2_window. 1617 * Those are provided by the user. So handle these two overlay types 1618 * first, and then just do a simple memset for the other types. 1619 */ 1620 switch (p->type) { 1621 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1622 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: { 1623 struct v4l2_clip *clips = p->fmt.win.clips; 1624 u32 clipcount = p->fmt.win.clipcount; 1625 void __user *bitmap = p->fmt.win.bitmap; 1626 1627 memset(&p->fmt, 0, sizeof(p->fmt)); 1628 p->fmt.win.clips = clips; 1629 p->fmt.win.clipcount = clipcount; 1630 p->fmt.win.bitmap = bitmap; 1631 break; 1632 } 1633 default: 1634 memset(&p->fmt, 0, sizeof(p->fmt)); 1635 break; 1636 } 1637 1638 switch (p->type) { 1639 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1640 if (unlikely(!ops->vidioc_g_fmt_vid_cap)) 1641 break; 1642 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1643 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg); 1644 /* just in case the driver zeroed it again */ 1645 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1646 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1647 v4l_pix_format_touch(&p->fmt.pix); 1648 return ret; 1649 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1650 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg); 1651 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1652 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg); 1653 case V4L2_BUF_TYPE_VBI_CAPTURE: 1654 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg); 1655 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1656 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg); 1657 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1658 if (unlikely(!ops->vidioc_g_fmt_vid_out)) 1659 break; 1660 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1661 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg); 1662 /* just in case the driver zeroed it again */ 1663 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1664 return ret; 1665 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1666 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg); 1667 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1668 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg); 1669 case V4L2_BUF_TYPE_VBI_OUTPUT: 1670 return ops->vidioc_g_fmt_vbi_out(file, fh, arg); 1671 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1672 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg); 1673 case V4L2_BUF_TYPE_SDR_CAPTURE: 1674 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg); 1675 case V4L2_BUF_TYPE_SDR_OUTPUT: 1676 return ops->vidioc_g_fmt_sdr_out(file, fh, arg); 1677 case V4L2_BUF_TYPE_META_CAPTURE: 1678 return ops->vidioc_g_fmt_meta_cap(file, fh, arg); 1679 case V4L2_BUF_TYPE_META_OUTPUT: 1680 return ops->vidioc_g_fmt_meta_out(file, fh, arg); 1681 } 1682 return -EINVAL; 1683 } 1684 1685 static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, 1686 struct file *file, void *fh, void *arg) 1687 { 1688 struct v4l2_format *p = arg; 1689 struct video_device *vfd = video_devdata(file); 1690 int ret = check_fmt(file, p->type); 1691 unsigned int i; 1692 1693 if (ret) 1694 return ret; 1695 1696 ret = v4l_enable_media_source(vfd); 1697 if (ret) 1698 return ret; 1699 v4l_sanitize_format(p); 1700 1701 switch (p->type) { 1702 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1703 if (unlikely(!ops->vidioc_s_fmt_vid_cap)) 1704 break; 1705 memset_after(p, 0, fmt.pix); 1706 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg); 1707 /* just in case the driver zeroed it again */ 1708 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1709 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1710 v4l_pix_format_touch(&p->fmt.pix); 1711 return ret; 1712 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1713 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane)) 1714 break; 1715 memset_after(p, 0, fmt.pix_mp.xfer_func); 1716 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1717 memset_after(&p->fmt.pix_mp.plane_fmt[i], 1718 0, bytesperline); 1719 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg); 1720 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1721 if (unlikely(!ops->vidioc_s_fmt_vid_overlay)) 1722 break; 1723 memset_after(p, 0, fmt.win); 1724 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg); 1725 case V4L2_BUF_TYPE_VBI_CAPTURE: 1726 if (unlikely(!ops->vidioc_s_fmt_vbi_cap)) 1727 break; 1728 memset_after(p, 0, fmt.vbi.flags); 1729 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg); 1730 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1731 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap)) 1732 break; 1733 memset_after(p, 0, fmt.sliced.io_size); 1734 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg); 1735 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1736 if (unlikely(!ops->vidioc_s_fmt_vid_out)) 1737 break; 1738 memset_after(p, 0, fmt.pix); 1739 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg); 1740 /* just in case the driver zeroed it again */ 1741 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1742 return ret; 1743 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1744 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane)) 1745 break; 1746 memset_after(p, 0, fmt.pix_mp.xfer_func); 1747 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1748 memset_after(&p->fmt.pix_mp.plane_fmt[i], 1749 0, bytesperline); 1750 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg); 1751 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1752 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay)) 1753 break; 1754 memset_after(p, 0, fmt.win); 1755 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg); 1756 case V4L2_BUF_TYPE_VBI_OUTPUT: 1757 if (unlikely(!ops->vidioc_s_fmt_vbi_out)) 1758 break; 1759 memset_after(p, 0, fmt.vbi.flags); 1760 return ops->vidioc_s_fmt_vbi_out(file, fh, arg); 1761 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1762 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out)) 1763 break; 1764 memset_after(p, 0, fmt.sliced.io_size); 1765 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg); 1766 case V4L2_BUF_TYPE_SDR_CAPTURE: 1767 if (unlikely(!ops->vidioc_s_fmt_sdr_cap)) 1768 break; 1769 memset_after(p, 0, fmt.sdr.buffersize); 1770 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg); 1771 case V4L2_BUF_TYPE_SDR_OUTPUT: 1772 if (unlikely(!ops->vidioc_s_fmt_sdr_out)) 1773 break; 1774 memset_after(p, 0, fmt.sdr.buffersize); 1775 return ops->vidioc_s_fmt_sdr_out(file, fh, arg); 1776 case V4L2_BUF_TYPE_META_CAPTURE: 1777 if (unlikely(!ops->vidioc_s_fmt_meta_cap)) 1778 break; 1779 memset_after(p, 0, fmt.meta); 1780 return ops->vidioc_s_fmt_meta_cap(file, fh, arg); 1781 case V4L2_BUF_TYPE_META_OUTPUT: 1782 if (unlikely(!ops->vidioc_s_fmt_meta_out)) 1783 break; 1784 memset_after(p, 0, fmt.meta); 1785 return ops->vidioc_s_fmt_meta_out(file, fh, arg); 1786 } 1787 return -EINVAL; 1788 } 1789 1790 static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, 1791 struct file *file, void *fh, void *arg) 1792 { 1793 struct v4l2_format *p = arg; 1794 struct video_device *vfd = video_devdata(file); 1795 int ret = check_fmt(file, p->type); 1796 unsigned int i; 1797 1798 if (ret) 1799 return ret; 1800 1801 v4l_sanitize_format(p); 1802 1803 switch (p->type) { 1804 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1805 if (unlikely(!ops->vidioc_try_fmt_vid_cap)) 1806 break; 1807 memset_after(p, 0, fmt.pix); 1808 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg); 1809 /* just in case the driver zeroed it again */ 1810 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1811 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1812 v4l_pix_format_touch(&p->fmt.pix); 1813 return ret; 1814 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1815 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane)) 1816 break; 1817 memset_after(p, 0, fmt.pix_mp.xfer_func); 1818 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1819 memset_after(&p->fmt.pix_mp.plane_fmt[i], 1820 0, bytesperline); 1821 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg); 1822 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1823 if (unlikely(!ops->vidioc_try_fmt_vid_overlay)) 1824 break; 1825 memset_after(p, 0, fmt.win); 1826 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg); 1827 case V4L2_BUF_TYPE_VBI_CAPTURE: 1828 if (unlikely(!ops->vidioc_try_fmt_vbi_cap)) 1829 break; 1830 memset_after(p, 0, fmt.vbi.flags); 1831 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg); 1832 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1833 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap)) 1834 break; 1835 memset_after(p, 0, fmt.sliced.io_size); 1836 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg); 1837 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1838 if (unlikely(!ops->vidioc_try_fmt_vid_out)) 1839 break; 1840 memset_after(p, 0, fmt.pix); 1841 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg); 1842 /* just in case the driver zeroed it again */ 1843 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1844 return ret; 1845 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1846 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane)) 1847 break; 1848 memset_after(p, 0, fmt.pix_mp.xfer_func); 1849 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1850 memset_after(&p->fmt.pix_mp.plane_fmt[i], 1851 0, bytesperline); 1852 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg); 1853 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1854 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay)) 1855 break; 1856 memset_after(p, 0, fmt.win); 1857 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg); 1858 case V4L2_BUF_TYPE_VBI_OUTPUT: 1859 if (unlikely(!ops->vidioc_try_fmt_vbi_out)) 1860 break; 1861 memset_after(p, 0, fmt.vbi.flags); 1862 return ops->vidioc_try_fmt_vbi_out(file, fh, arg); 1863 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1864 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out)) 1865 break; 1866 memset_after(p, 0, fmt.sliced.io_size); 1867 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg); 1868 case V4L2_BUF_TYPE_SDR_CAPTURE: 1869 if (unlikely(!ops->vidioc_try_fmt_sdr_cap)) 1870 break; 1871 memset_after(p, 0, fmt.sdr.buffersize); 1872 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg); 1873 case V4L2_BUF_TYPE_SDR_OUTPUT: 1874 if (unlikely(!ops->vidioc_try_fmt_sdr_out)) 1875 break; 1876 memset_after(p, 0, fmt.sdr.buffersize); 1877 return ops->vidioc_try_fmt_sdr_out(file, fh, arg); 1878 case V4L2_BUF_TYPE_META_CAPTURE: 1879 if (unlikely(!ops->vidioc_try_fmt_meta_cap)) 1880 break; 1881 memset_after(p, 0, fmt.meta); 1882 return ops->vidioc_try_fmt_meta_cap(file, fh, arg); 1883 case V4L2_BUF_TYPE_META_OUTPUT: 1884 if (unlikely(!ops->vidioc_try_fmt_meta_out)) 1885 break; 1886 memset_after(p, 0, fmt.meta); 1887 return ops->vidioc_try_fmt_meta_out(file, fh, arg); 1888 } 1889 return -EINVAL; 1890 } 1891 1892 static int v4l_streamon(const struct v4l2_ioctl_ops *ops, 1893 struct file *file, void *fh, void *arg) 1894 { 1895 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg); 1896 } 1897 1898 static int v4l_streamoff(const struct v4l2_ioctl_ops *ops, 1899 struct file *file, void *fh, void *arg) 1900 { 1901 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg); 1902 } 1903 1904 static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops, 1905 struct file *file, void *fh, void *arg) 1906 { 1907 struct video_device *vfd = video_devdata(file); 1908 struct v4l2_tuner *p = arg; 1909 int err; 1910 1911 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1912 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1913 err = ops->vidioc_g_tuner(file, fh, p); 1914 if (!err) 1915 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1916 return err; 1917 } 1918 1919 static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops, 1920 struct file *file, void *fh, void *arg) 1921 { 1922 struct video_device *vfd = video_devdata(file); 1923 struct v4l2_tuner *p = arg; 1924 int ret; 1925 1926 ret = v4l_enable_media_source(vfd); 1927 if (ret) 1928 return ret; 1929 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1930 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1931 return ops->vidioc_s_tuner(file, fh, p); 1932 } 1933 1934 static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops, 1935 struct file *file, void *fh, void *arg) 1936 { 1937 struct video_device *vfd = video_devdata(file); 1938 struct v4l2_modulator *p = arg; 1939 int err; 1940 1941 if (vfd->vfl_type == VFL_TYPE_RADIO) 1942 p->type = V4L2_TUNER_RADIO; 1943 1944 err = ops->vidioc_g_modulator(file, fh, p); 1945 if (!err) 1946 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1947 return err; 1948 } 1949 1950 static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops, 1951 struct file *file, void *fh, void *arg) 1952 { 1953 struct video_device *vfd = video_devdata(file); 1954 struct v4l2_modulator *p = arg; 1955 1956 if (vfd->vfl_type == VFL_TYPE_RADIO) 1957 p->type = V4L2_TUNER_RADIO; 1958 1959 return ops->vidioc_s_modulator(file, fh, p); 1960 } 1961 1962 static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops, 1963 struct file *file, void *fh, void *arg) 1964 { 1965 struct video_device *vfd = video_devdata(file); 1966 struct v4l2_frequency *p = arg; 1967 1968 if (vfd->vfl_type == VFL_TYPE_SDR) 1969 p->type = V4L2_TUNER_SDR; 1970 else 1971 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1972 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1973 return ops->vidioc_g_frequency(file, fh, p); 1974 } 1975 1976 static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops, 1977 struct file *file, void *fh, void *arg) 1978 { 1979 struct video_device *vfd = video_devdata(file); 1980 const struct v4l2_frequency *p = arg; 1981 enum v4l2_tuner_type type; 1982 int ret; 1983 1984 ret = v4l_enable_media_source(vfd); 1985 if (ret) 1986 return ret; 1987 if (vfd->vfl_type == VFL_TYPE_SDR) { 1988 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 1989 return -EINVAL; 1990 } else { 1991 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1992 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1993 if (type != p->type) 1994 return -EINVAL; 1995 } 1996 return ops->vidioc_s_frequency(file, fh, p); 1997 } 1998 1999 static int v4l_enumstd(const struct v4l2_ioctl_ops *ops, 2000 struct file *file, void *fh, void *arg) 2001 { 2002 struct video_device *vfd = video_devdata(file); 2003 struct v4l2_standard *p = arg; 2004 2005 return v4l_video_std_enumstd(p, vfd->tvnorms); 2006 } 2007 2008 static int v4l_s_std(const struct v4l2_ioctl_ops *ops, 2009 struct file *file, void *fh, void *arg) 2010 { 2011 struct video_device *vfd = video_devdata(file); 2012 v4l2_std_id id = *(v4l2_std_id *)arg, norm; 2013 int ret; 2014 2015 ret = v4l_enable_media_source(vfd); 2016 if (ret) 2017 return ret; 2018 norm = id & vfd->tvnorms; 2019 if (vfd->tvnorms && !norm) /* Check if std is supported */ 2020 return -EINVAL; 2021 2022 /* Calls the specific handler */ 2023 return ops->vidioc_s_std(file, fh, norm); 2024 } 2025 2026 static int v4l_querystd(const struct v4l2_ioctl_ops *ops, 2027 struct file *file, void *fh, void *arg) 2028 { 2029 struct video_device *vfd = video_devdata(file); 2030 v4l2_std_id *p = arg; 2031 int ret; 2032 2033 ret = v4l_enable_media_source(vfd); 2034 if (ret) 2035 return ret; 2036 /* 2037 * If no signal is detected, then the driver should return 2038 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with 2039 * any standards that do not apply removed. 2040 * 2041 * This means that tuners, audio and video decoders can join 2042 * their efforts to improve the standards detection. 2043 */ 2044 *p = vfd->tvnorms; 2045 return ops->vidioc_querystd(file, fh, arg); 2046 } 2047 2048 static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops, 2049 struct file *file, void *fh, void *arg) 2050 { 2051 struct video_device *vfd = video_devdata(file); 2052 struct v4l2_hw_freq_seek *p = arg; 2053 enum v4l2_tuner_type type; 2054 int ret; 2055 2056 ret = v4l_enable_media_source(vfd); 2057 if (ret) 2058 return ret; 2059 /* s_hw_freq_seek is not supported for SDR for now */ 2060 if (vfd->vfl_type == VFL_TYPE_SDR) 2061 return -EINVAL; 2062 2063 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2064 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2065 if (p->type != type) 2066 return -EINVAL; 2067 return ops->vidioc_s_hw_freq_seek(file, fh, p); 2068 } 2069 2070 static int v4l_overlay(const struct v4l2_ioctl_ops *ops, 2071 struct file *file, void *fh, void *arg) 2072 { 2073 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg); 2074 } 2075 2076 static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops, 2077 struct file *file, void *fh, void *arg) 2078 { 2079 struct v4l2_requestbuffers *p = arg; 2080 int ret = check_fmt(file, p->type); 2081 2082 if (ret) 2083 return ret; 2084 2085 memset_after(p, 0, flags); 2086 2087 return ops->vidioc_reqbufs(file, fh, p); 2088 } 2089 2090 static int v4l_querybuf(const struct v4l2_ioctl_ops *ops, 2091 struct file *file, void *fh, void *arg) 2092 { 2093 struct v4l2_buffer *p = arg; 2094 int ret = check_fmt(file, p->type); 2095 2096 return ret ? ret : ops->vidioc_querybuf(file, fh, p); 2097 } 2098 2099 static int v4l_qbuf(const struct v4l2_ioctl_ops *ops, 2100 struct file *file, void *fh, void *arg) 2101 { 2102 struct v4l2_buffer *p = arg; 2103 int ret = check_fmt(file, p->type); 2104 2105 return ret ? ret : ops->vidioc_qbuf(file, fh, p); 2106 } 2107 2108 static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops, 2109 struct file *file, void *fh, void *arg) 2110 { 2111 struct v4l2_buffer *p = arg; 2112 int ret = check_fmt(file, p->type); 2113 2114 return ret ? ret : ops->vidioc_dqbuf(file, fh, p); 2115 } 2116 2117 static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops, 2118 struct file *file, void *fh, void *arg) 2119 { 2120 struct v4l2_create_buffers *create = arg; 2121 int ret = check_fmt(file, create->format.type); 2122 2123 if (ret) 2124 return ret; 2125 2126 memset_after(create, 0, flags); 2127 2128 v4l_sanitize_format(&create->format); 2129 2130 ret = ops->vidioc_create_bufs(file, fh, create); 2131 2132 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 2133 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT) 2134 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 2135 2136 return ret; 2137 } 2138 2139 static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops, 2140 struct file *file, void *fh, void *arg) 2141 { 2142 struct v4l2_buffer *b = arg; 2143 int ret = check_fmt(file, b->type); 2144 2145 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b); 2146 } 2147 2148 static int v4l_g_parm(const struct v4l2_ioctl_ops *ops, 2149 struct file *file, void *fh, void *arg) 2150 { 2151 struct video_device *vfd = video_devdata(file); 2152 struct v4l2_streamparm *p = arg; 2153 v4l2_std_id std; 2154 int ret = check_fmt(file, p->type); 2155 2156 if (ret) 2157 return ret; 2158 if (ops->vidioc_g_parm) 2159 return ops->vidioc_g_parm(file, fh, p); 2160 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && 2161 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2162 return -EINVAL; 2163 if (vfd->device_caps & V4L2_CAP_READWRITE) 2164 p->parm.capture.readbuffers = 2; 2165 ret = ops->vidioc_g_std(file, fh, &std); 2166 if (ret == 0) 2167 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe); 2168 return ret; 2169 } 2170 2171 static int v4l_s_parm(const struct v4l2_ioctl_ops *ops, 2172 struct file *file, void *fh, void *arg) 2173 { 2174 struct v4l2_streamparm *p = arg; 2175 int ret = check_fmt(file, p->type); 2176 2177 if (ret) 2178 return ret; 2179 2180 /* Note: extendedmode is never used in drivers */ 2181 if (V4L2_TYPE_IS_OUTPUT(p->type)) { 2182 memset(p->parm.output.reserved, 0, 2183 sizeof(p->parm.output.reserved)); 2184 p->parm.output.extendedmode = 0; 2185 p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY; 2186 } else { 2187 memset(p->parm.capture.reserved, 0, 2188 sizeof(p->parm.capture.reserved)); 2189 p->parm.capture.extendedmode = 0; 2190 p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY; 2191 } 2192 return ops->vidioc_s_parm(file, fh, p); 2193 } 2194 2195 static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops, 2196 struct file *file, void *fh, void *arg) 2197 { 2198 struct video_device *vfd = video_devdata(file); 2199 struct v4l2_queryctrl *p = arg; 2200 struct v4l2_fh *vfh = 2201 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2202 2203 if (vfh && vfh->ctrl_handler) 2204 return v4l2_queryctrl(vfh->ctrl_handler, p); 2205 if (vfd->ctrl_handler) 2206 return v4l2_queryctrl(vfd->ctrl_handler, p); 2207 if (ops->vidioc_queryctrl) 2208 return ops->vidioc_queryctrl(file, fh, p); 2209 return -ENOTTY; 2210 } 2211 2212 static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops, 2213 struct file *file, void *fh, void *arg) 2214 { 2215 struct video_device *vfd = video_devdata(file); 2216 struct v4l2_query_ext_ctrl *p = arg; 2217 struct v4l2_fh *vfh = 2218 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2219 2220 if (vfh && vfh->ctrl_handler) 2221 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p); 2222 if (vfd->ctrl_handler) 2223 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p); 2224 if (ops->vidioc_query_ext_ctrl) 2225 return ops->vidioc_query_ext_ctrl(file, fh, p); 2226 return -ENOTTY; 2227 } 2228 2229 static int v4l_querymenu(const struct v4l2_ioctl_ops *ops, 2230 struct file *file, void *fh, void *arg) 2231 { 2232 struct video_device *vfd = video_devdata(file); 2233 struct v4l2_querymenu *p = arg; 2234 struct v4l2_fh *vfh = 2235 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2236 2237 if (vfh && vfh->ctrl_handler) 2238 return v4l2_querymenu(vfh->ctrl_handler, p); 2239 if (vfd->ctrl_handler) 2240 return v4l2_querymenu(vfd->ctrl_handler, p); 2241 if (ops->vidioc_querymenu) 2242 return ops->vidioc_querymenu(file, fh, p); 2243 return -ENOTTY; 2244 } 2245 2246 static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops, 2247 struct file *file, void *fh, void *arg) 2248 { 2249 struct video_device *vfd = video_devdata(file); 2250 struct v4l2_control *p = arg; 2251 struct v4l2_fh *vfh = 2252 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2253 struct v4l2_ext_controls ctrls; 2254 struct v4l2_ext_control ctrl; 2255 2256 if (vfh && vfh->ctrl_handler) 2257 return v4l2_g_ctrl(vfh->ctrl_handler, p); 2258 if (vfd->ctrl_handler) 2259 return v4l2_g_ctrl(vfd->ctrl_handler, p); 2260 if (ops->vidioc_g_ctrl) 2261 return ops->vidioc_g_ctrl(file, fh, p); 2262 if (ops->vidioc_g_ext_ctrls == NULL) 2263 return -ENOTTY; 2264 2265 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2266 ctrls.count = 1; 2267 ctrls.controls = &ctrl; 2268 ctrl.id = p->id; 2269 ctrl.value = p->value; 2270 if (check_ext_ctrls(&ctrls, VIDIOC_G_CTRL)) { 2271 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls); 2272 2273 if (ret == 0) 2274 p->value = ctrl.value; 2275 return ret; 2276 } 2277 return -EINVAL; 2278 } 2279 2280 static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, 2281 struct file *file, void *fh, void *arg) 2282 { 2283 struct video_device *vfd = video_devdata(file); 2284 struct v4l2_control *p = arg; 2285 struct v4l2_fh *vfh = 2286 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2287 struct v4l2_ext_controls ctrls; 2288 struct v4l2_ext_control ctrl; 2289 int ret; 2290 2291 if (vfh && vfh->ctrl_handler) 2292 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p); 2293 if (vfd->ctrl_handler) 2294 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p); 2295 if (ops->vidioc_s_ctrl) 2296 return ops->vidioc_s_ctrl(file, fh, p); 2297 if (ops->vidioc_s_ext_ctrls == NULL) 2298 return -ENOTTY; 2299 2300 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2301 ctrls.count = 1; 2302 ctrls.controls = &ctrl; 2303 ctrl.id = p->id; 2304 ctrl.value = p->value; 2305 if (!check_ext_ctrls(&ctrls, VIDIOC_S_CTRL)) 2306 return -EINVAL; 2307 ret = ops->vidioc_s_ext_ctrls(file, fh, &ctrls); 2308 p->value = ctrl.value; 2309 return ret; 2310 } 2311 2312 static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2313 struct file *file, void *fh, void *arg) 2314 { 2315 struct video_device *vfd = video_devdata(file); 2316 struct v4l2_ext_controls *p = arg; 2317 struct v4l2_fh *vfh = 2318 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2319 2320 p->error_idx = p->count; 2321 if (vfh && vfh->ctrl_handler) 2322 return v4l2_g_ext_ctrls(vfh->ctrl_handler, 2323 vfd, vfd->v4l2_dev->mdev, p); 2324 if (vfd->ctrl_handler) 2325 return v4l2_g_ext_ctrls(vfd->ctrl_handler, 2326 vfd, vfd->v4l2_dev->mdev, p); 2327 if (ops->vidioc_g_ext_ctrls == NULL) 2328 return -ENOTTY; 2329 return check_ext_ctrls(p, VIDIOC_G_EXT_CTRLS) ? 2330 ops->vidioc_g_ext_ctrls(file, fh, p) : -EINVAL; 2331 } 2332 2333 static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2334 struct file *file, void *fh, void *arg) 2335 { 2336 struct video_device *vfd = video_devdata(file); 2337 struct v4l2_ext_controls *p = arg; 2338 struct v4l2_fh *vfh = 2339 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2340 2341 p->error_idx = p->count; 2342 if (vfh && vfh->ctrl_handler) 2343 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, 2344 vfd, vfd->v4l2_dev->mdev, p); 2345 if (vfd->ctrl_handler) 2346 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, 2347 vfd, vfd->v4l2_dev->mdev, p); 2348 if (ops->vidioc_s_ext_ctrls == NULL) 2349 return -ENOTTY; 2350 return check_ext_ctrls(p, VIDIOC_S_EXT_CTRLS) ? 2351 ops->vidioc_s_ext_ctrls(file, fh, p) : -EINVAL; 2352 } 2353 2354 static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2355 struct file *file, void *fh, void *arg) 2356 { 2357 struct video_device *vfd = video_devdata(file); 2358 struct v4l2_ext_controls *p = arg; 2359 struct v4l2_fh *vfh = 2360 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2361 2362 p->error_idx = p->count; 2363 if (vfh && vfh->ctrl_handler) 2364 return v4l2_try_ext_ctrls(vfh->ctrl_handler, 2365 vfd, vfd->v4l2_dev->mdev, p); 2366 if (vfd->ctrl_handler) 2367 return v4l2_try_ext_ctrls(vfd->ctrl_handler, 2368 vfd, vfd->v4l2_dev->mdev, p); 2369 if (ops->vidioc_try_ext_ctrls == NULL) 2370 return -ENOTTY; 2371 return check_ext_ctrls(p, VIDIOC_TRY_EXT_CTRLS) ? 2372 ops->vidioc_try_ext_ctrls(file, fh, p) : -EINVAL; 2373 } 2374 2375 /* 2376 * The selection API specified originally that the _MPLANE buffer types 2377 * shouldn't be used. The reasons for this are lost in the mists of time 2378 * (or just really crappy memories). Regardless, this is really annoying 2379 * for userspace. So to keep things simple we map _MPLANE buffer types 2380 * to their 'regular' counterparts before calling the driver. And we 2381 * restore it afterwards. This way applications can use either buffer 2382 * type and drivers don't need to check for both. 2383 */ 2384 static int v4l_g_selection(const struct v4l2_ioctl_ops *ops, 2385 struct file *file, void *fh, void *arg) 2386 { 2387 struct v4l2_selection *p = arg; 2388 u32 old_type = p->type; 2389 int ret; 2390 2391 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2392 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2393 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2394 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2395 ret = ops->vidioc_g_selection(file, fh, p); 2396 p->type = old_type; 2397 return ret; 2398 } 2399 2400 static int v4l_s_selection(const struct v4l2_ioctl_ops *ops, 2401 struct file *file, void *fh, void *arg) 2402 { 2403 struct v4l2_selection *p = arg; 2404 u32 old_type = p->type; 2405 int ret; 2406 2407 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2408 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2409 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2410 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2411 ret = ops->vidioc_s_selection(file, fh, p); 2412 p->type = old_type; 2413 return ret; 2414 } 2415 2416 static int v4l_g_crop(const struct v4l2_ioctl_ops *ops, 2417 struct file *file, void *fh, void *arg) 2418 { 2419 struct video_device *vfd = video_devdata(file); 2420 struct v4l2_crop *p = arg; 2421 struct v4l2_selection s = { 2422 .type = p->type, 2423 }; 2424 int ret; 2425 2426 /* simulate capture crop using selection api */ 2427 2428 /* crop means compose for output devices */ 2429 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2430 s.target = V4L2_SEL_TGT_COMPOSE; 2431 else 2432 s.target = V4L2_SEL_TGT_CROP; 2433 2434 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2435 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2436 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2437 2438 ret = v4l_g_selection(ops, file, fh, &s); 2439 2440 /* copying results to old structure on success */ 2441 if (!ret) 2442 p->c = s.r; 2443 return ret; 2444 } 2445 2446 static int v4l_s_crop(const struct v4l2_ioctl_ops *ops, 2447 struct file *file, void *fh, void *arg) 2448 { 2449 struct video_device *vfd = video_devdata(file); 2450 struct v4l2_crop *p = arg; 2451 struct v4l2_selection s = { 2452 .type = p->type, 2453 .r = p->c, 2454 }; 2455 2456 /* simulate capture crop using selection api */ 2457 2458 /* crop means compose for output devices */ 2459 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2460 s.target = V4L2_SEL_TGT_COMPOSE; 2461 else 2462 s.target = V4L2_SEL_TGT_CROP; 2463 2464 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2465 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2466 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2467 2468 return v4l_s_selection(ops, file, fh, &s); 2469 } 2470 2471 static int v4l_cropcap(const struct v4l2_ioctl_ops *ops, 2472 struct file *file, void *fh, void *arg) 2473 { 2474 struct video_device *vfd = video_devdata(file); 2475 struct v4l2_cropcap *p = arg; 2476 struct v4l2_selection s = { .type = p->type }; 2477 int ret = 0; 2478 2479 /* setting trivial pixelaspect */ 2480 p->pixelaspect.numerator = 1; 2481 p->pixelaspect.denominator = 1; 2482 2483 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2484 s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2485 else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2486 s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2487 2488 /* 2489 * The determine_valid_ioctls() call already should ensure 2490 * that this can never happen, but just in case... 2491 */ 2492 if (WARN_ON(!ops->vidioc_g_selection)) 2493 return -ENOTTY; 2494 2495 if (ops->vidioc_g_pixelaspect) 2496 ret = ops->vidioc_g_pixelaspect(file, fh, s.type, 2497 &p->pixelaspect); 2498 2499 /* 2500 * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the 2501 * square pixel aspect ratio in that case. 2502 */ 2503 if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD) 2504 return ret; 2505 2506 /* Use g_selection() to fill in the bounds and defrect rectangles */ 2507 2508 /* obtaining bounds */ 2509 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2510 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS; 2511 else 2512 s.target = V4L2_SEL_TGT_CROP_BOUNDS; 2513 2514 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2515 s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ? 2516 V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS; 2517 2518 ret = v4l_g_selection(ops, file, fh, &s); 2519 if (ret) 2520 return ret; 2521 p->bounds = s.r; 2522 2523 /* obtaining defrect */ 2524 if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS) 2525 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT; 2526 else 2527 s.target = V4L2_SEL_TGT_CROP_DEFAULT; 2528 2529 ret = v4l_g_selection(ops, file, fh, &s); 2530 if (ret) 2531 return ret; 2532 p->defrect = s.r; 2533 2534 return 0; 2535 } 2536 2537 static int v4l_log_status(const struct v4l2_ioctl_ops *ops, 2538 struct file *file, void *fh, void *arg) 2539 { 2540 struct video_device *vfd = video_devdata(file); 2541 int ret; 2542 2543 if (vfd->v4l2_dev) 2544 pr_info("%s: ================= START STATUS =================\n", 2545 vfd->v4l2_dev->name); 2546 ret = ops->vidioc_log_status(file, fh); 2547 if (vfd->v4l2_dev) 2548 pr_info("%s: ================== END STATUS ==================\n", 2549 vfd->v4l2_dev->name); 2550 return ret; 2551 } 2552 2553 static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops, 2554 struct file *file, void *fh, void *arg) 2555 { 2556 #ifdef CONFIG_VIDEO_ADV_DEBUG 2557 struct v4l2_dbg_register *p = arg; 2558 struct video_device *vfd = video_devdata(file); 2559 struct v4l2_subdev *sd; 2560 int idx = 0; 2561 2562 if (!capable(CAP_SYS_ADMIN)) 2563 return -EPERM; 2564 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2565 if (vfd->v4l2_dev == NULL) 2566 return -EINVAL; 2567 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2568 if (p->match.addr == idx++) 2569 return v4l2_subdev_call(sd, core, g_register, p); 2570 return -EINVAL; 2571 } 2572 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2573 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2574 return ops->vidioc_g_register(file, fh, p); 2575 return -EINVAL; 2576 #else 2577 return -ENOTTY; 2578 #endif 2579 } 2580 2581 static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops, 2582 struct file *file, void *fh, void *arg) 2583 { 2584 #ifdef CONFIG_VIDEO_ADV_DEBUG 2585 const struct v4l2_dbg_register *p = arg; 2586 struct video_device *vfd = video_devdata(file); 2587 struct v4l2_subdev *sd; 2588 int idx = 0; 2589 2590 if (!capable(CAP_SYS_ADMIN)) 2591 return -EPERM; 2592 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2593 if (vfd->v4l2_dev == NULL) 2594 return -EINVAL; 2595 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2596 if (p->match.addr == idx++) 2597 return v4l2_subdev_call(sd, core, s_register, p); 2598 return -EINVAL; 2599 } 2600 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2601 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2602 return ops->vidioc_s_register(file, fh, p); 2603 return -EINVAL; 2604 #else 2605 return -ENOTTY; 2606 #endif 2607 } 2608 2609 static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops, 2610 struct file *file, void *fh, void *arg) 2611 { 2612 #ifdef CONFIG_VIDEO_ADV_DEBUG 2613 struct video_device *vfd = video_devdata(file); 2614 struct v4l2_dbg_chip_info *p = arg; 2615 struct v4l2_subdev *sd; 2616 int idx = 0; 2617 2618 switch (p->match.type) { 2619 case V4L2_CHIP_MATCH_BRIDGE: 2620 if (ops->vidioc_s_register) 2621 p->flags |= V4L2_CHIP_FL_WRITABLE; 2622 if (ops->vidioc_g_register) 2623 p->flags |= V4L2_CHIP_FL_READABLE; 2624 strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name)); 2625 if (ops->vidioc_g_chip_info) 2626 return ops->vidioc_g_chip_info(file, fh, arg); 2627 if (p->match.addr) 2628 return -EINVAL; 2629 return 0; 2630 2631 case V4L2_CHIP_MATCH_SUBDEV: 2632 if (vfd->v4l2_dev == NULL) 2633 break; 2634 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) { 2635 if (p->match.addr != idx++) 2636 continue; 2637 if (sd->ops->core && sd->ops->core->s_register) 2638 p->flags |= V4L2_CHIP_FL_WRITABLE; 2639 if (sd->ops->core && sd->ops->core->g_register) 2640 p->flags |= V4L2_CHIP_FL_READABLE; 2641 strscpy(p->name, sd->name, sizeof(p->name)); 2642 return 0; 2643 } 2644 break; 2645 } 2646 return -EINVAL; 2647 #else 2648 return -ENOTTY; 2649 #endif 2650 } 2651 2652 static int v4l_dqevent(const struct v4l2_ioctl_ops *ops, 2653 struct file *file, void *fh, void *arg) 2654 { 2655 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK); 2656 } 2657 2658 static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops, 2659 struct file *file, void *fh, void *arg) 2660 { 2661 return ops->vidioc_subscribe_event(fh, arg); 2662 } 2663 2664 static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops, 2665 struct file *file, void *fh, void *arg) 2666 { 2667 return ops->vidioc_unsubscribe_event(fh, arg); 2668 } 2669 2670 static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops, 2671 struct file *file, void *fh, void *arg) 2672 { 2673 struct v4l2_sliced_vbi_cap *p = arg; 2674 int ret = check_fmt(file, p->type); 2675 2676 if (ret) 2677 return ret; 2678 2679 /* Clear up to type, everything after type is zeroed already */ 2680 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type)); 2681 2682 return ops->vidioc_g_sliced_vbi_cap(file, fh, p); 2683 } 2684 2685 static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops, 2686 struct file *file, void *fh, void *arg) 2687 { 2688 struct video_device *vfd = video_devdata(file); 2689 struct v4l2_frequency_band *p = arg; 2690 enum v4l2_tuner_type type; 2691 int err; 2692 2693 if (vfd->vfl_type == VFL_TYPE_SDR) { 2694 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 2695 return -EINVAL; 2696 type = p->type; 2697 } else { 2698 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2699 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2700 if (type != p->type) 2701 return -EINVAL; 2702 } 2703 if (ops->vidioc_enum_freq_bands) { 2704 err = ops->vidioc_enum_freq_bands(file, fh, p); 2705 if (err != -ENOTTY) 2706 return err; 2707 } 2708 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) { 2709 struct v4l2_tuner t = { 2710 .index = p->tuner, 2711 .type = type, 2712 }; 2713 2714 if (p->index) 2715 return -EINVAL; 2716 err = ops->vidioc_g_tuner(file, fh, &t); 2717 if (err) 2718 return err; 2719 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2720 p->rangelow = t.rangelow; 2721 p->rangehigh = t.rangehigh; 2722 p->modulation = (type == V4L2_TUNER_RADIO) ? 2723 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2724 return 0; 2725 } 2726 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) { 2727 struct v4l2_modulator m = { 2728 .index = p->tuner, 2729 }; 2730 2731 if (type != V4L2_TUNER_RADIO) 2732 return -EINVAL; 2733 if (p->index) 2734 return -EINVAL; 2735 err = ops->vidioc_g_modulator(file, fh, &m); 2736 if (err) 2737 return err; 2738 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2739 p->rangelow = m.rangelow; 2740 p->rangehigh = m.rangehigh; 2741 p->modulation = (type == V4L2_TUNER_RADIO) ? 2742 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2743 return 0; 2744 } 2745 return -ENOTTY; 2746 } 2747 2748 struct v4l2_ioctl_info { 2749 unsigned int ioctl; 2750 u32 flags; 2751 const char * const name; 2752 int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file, 2753 void *fh, void *p); 2754 void (*debug)(const void *arg, bool write_only); 2755 }; 2756 2757 /* This control needs a priority check */ 2758 #define INFO_FL_PRIO (1 << 0) 2759 /* This control can be valid if the filehandle passes a control handler. */ 2760 #define INFO_FL_CTRL (1 << 1) 2761 /* Queuing ioctl */ 2762 #define INFO_FL_QUEUE (1 << 2) 2763 /* Always copy back result, even on error */ 2764 #define INFO_FL_ALWAYS_COPY (1 << 3) 2765 /* Zero struct from after the field to the end */ 2766 #define INFO_FL_CLEAR(v4l2_struct, field) \ 2767 ((offsetof(struct v4l2_struct, field) + \ 2768 sizeof_field(struct v4l2_struct, field)) << 16) 2769 #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16) 2770 2771 #define DEFINE_V4L_STUB_FUNC(_vidioc) \ 2772 static int v4l_stub_ ## _vidioc( \ 2773 const struct v4l2_ioctl_ops *ops, \ 2774 struct file *file, void *fh, void *p) \ 2775 { \ 2776 return ops->vidioc_ ## _vidioc(file, fh, p); \ 2777 } 2778 2779 #define IOCTL_INFO(_ioctl, _func, _debug, _flags) \ 2780 [_IOC_NR(_ioctl)] = { \ 2781 .ioctl = _ioctl, \ 2782 .flags = _flags, \ 2783 .name = #_ioctl, \ 2784 .func = _func, \ 2785 .debug = _debug, \ 2786 } 2787 2788 DEFINE_V4L_STUB_FUNC(g_fbuf) 2789 DEFINE_V4L_STUB_FUNC(s_fbuf) 2790 DEFINE_V4L_STUB_FUNC(expbuf) 2791 DEFINE_V4L_STUB_FUNC(g_std) 2792 DEFINE_V4L_STUB_FUNC(g_audio) 2793 DEFINE_V4L_STUB_FUNC(s_audio) 2794 DEFINE_V4L_STUB_FUNC(g_edid) 2795 DEFINE_V4L_STUB_FUNC(s_edid) 2796 DEFINE_V4L_STUB_FUNC(g_audout) 2797 DEFINE_V4L_STUB_FUNC(s_audout) 2798 DEFINE_V4L_STUB_FUNC(g_jpegcomp) 2799 DEFINE_V4L_STUB_FUNC(s_jpegcomp) 2800 DEFINE_V4L_STUB_FUNC(enumaudio) 2801 DEFINE_V4L_STUB_FUNC(enumaudout) 2802 DEFINE_V4L_STUB_FUNC(enum_framesizes) 2803 DEFINE_V4L_STUB_FUNC(enum_frameintervals) 2804 DEFINE_V4L_STUB_FUNC(g_enc_index) 2805 DEFINE_V4L_STUB_FUNC(encoder_cmd) 2806 DEFINE_V4L_STUB_FUNC(try_encoder_cmd) 2807 DEFINE_V4L_STUB_FUNC(decoder_cmd) 2808 DEFINE_V4L_STUB_FUNC(try_decoder_cmd) 2809 DEFINE_V4L_STUB_FUNC(s_dv_timings) 2810 DEFINE_V4L_STUB_FUNC(g_dv_timings) 2811 DEFINE_V4L_STUB_FUNC(enum_dv_timings) 2812 DEFINE_V4L_STUB_FUNC(query_dv_timings) 2813 DEFINE_V4L_STUB_FUNC(dv_timings_cap) 2814 2815 static const struct v4l2_ioctl_info v4l2_ioctls[] = { 2816 IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0), 2817 IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, 0), 2818 IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0), 2819 IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO), 2820 IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2821 IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)), 2822 IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0), 2823 IOCTL_INFO(VIDIOC_S_FBUF, v4l_stub_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO), 2824 IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO), 2825 IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE), 2826 IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)), 2827 IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE), 2828 IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2829 IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2830 IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)), 2831 IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO), 2832 IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0), 2833 IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO), 2834 IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)), 2835 IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)), 2836 IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)), 2837 IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL), 2838 IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)), 2839 IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO), 2840 IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0), 2841 IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO), 2842 IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)), 2843 IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)), 2844 IOCTL_INFO(VIDIOC_G_INPUT, v4l_g_input, v4l_print_u32, 0), 2845 IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO), 2846 IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY), 2847 IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY), 2848 IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_g_output, v4l_print_u32, 0), 2849 IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO), 2850 IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)), 2851 IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0), 2852 IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO), 2853 IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)), 2854 IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO), 2855 IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)), 2856 IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO), 2857 IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)), 2858 IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)), 2859 IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO), 2860 IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)), 2861 IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)), 2862 IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0), 2863 IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO), 2864 IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0), 2865 IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0), 2866 IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)), 2867 IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)), 2868 IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0), 2869 IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO), 2870 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)), 2871 IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0), 2872 IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY), 2873 IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL | INFO_FL_ALWAYS_COPY), 2874 IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY), 2875 IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)), 2876 IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)), 2877 IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0), 2878 IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2879 IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2880 IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO), 2881 IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0), 2882 IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0), 2883 IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0), 2884 IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO), 2885 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)), 2886 IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0), 2887 IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0), 2888 IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0), 2889 IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0), 2890 IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2891 IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE), 2892 IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)), 2893 IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY), 2894 IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)), 2895 IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0), 2896 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)), 2897 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)), 2898 }; 2899 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) 2900 2901 static bool v4l2_is_known_ioctl(unsigned int cmd) 2902 { 2903 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2904 return false; 2905 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd; 2906 } 2907 2908 static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, 2909 struct v4l2_fh *vfh, unsigned int cmd, 2910 void *arg) 2911 { 2912 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2913 return vdev->lock; 2914 if (vfh && vfh->m2m_ctx && 2915 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) { 2916 if (vfh->m2m_ctx->q_lock) 2917 return vfh->m2m_ctx->q_lock; 2918 } 2919 if (vdev->queue && vdev->queue->lock && 2920 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) 2921 return vdev->queue->lock; 2922 return vdev->lock; 2923 } 2924 2925 /* Common ioctl debug function. This function can be used by 2926 external ioctl messages as well as internal V4L ioctl */ 2927 void v4l_printk_ioctl(const char *prefix, unsigned int cmd) 2928 { 2929 const char *dir, *type; 2930 2931 if (prefix) 2932 printk(KERN_DEBUG "%s: ", prefix); 2933 2934 switch (_IOC_TYPE(cmd)) { 2935 case 'd': 2936 type = "v4l2_int"; 2937 break; 2938 case 'V': 2939 if (_IOC_NR(cmd) >= V4L2_IOCTLS) { 2940 type = "v4l2"; 2941 break; 2942 } 2943 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name); 2944 return; 2945 default: 2946 type = "unknown"; 2947 break; 2948 } 2949 2950 switch (_IOC_DIR(cmd)) { 2951 case _IOC_NONE: dir = "--"; break; 2952 case _IOC_READ: dir = "r-"; break; 2953 case _IOC_WRITE: dir = "-w"; break; 2954 case _IOC_READ | _IOC_WRITE: dir = "rw"; break; 2955 default: dir = "*ERR*"; break; 2956 } 2957 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)", 2958 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd); 2959 } 2960 EXPORT_SYMBOL(v4l_printk_ioctl); 2961 2962 static long __video_do_ioctl(struct file *file, 2963 unsigned int cmd, void *arg) 2964 { 2965 struct video_device *vfd = video_devdata(file); 2966 struct mutex *req_queue_lock = NULL; 2967 struct mutex *lock; /* ioctl serialization mutex */ 2968 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 2969 bool write_only = false; 2970 struct v4l2_ioctl_info default_info; 2971 const struct v4l2_ioctl_info *info; 2972 void *fh = file->private_data; 2973 struct v4l2_fh *vfh = NULL; 2974 int dev_debug = vfd->dev_debug; 2975 long ret = -ENOTTY; 2976 2977 if (ops == NULL) { 2978 pr_warn("%s: has no ioctl_ops.\n", 2979 video_device_node_name(vfd)); 2980 return ret; 2981 } 2982 2983 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 2984 vfh = file->private_data; 2985 2986 /* 2987 * We need to serialize streamon/off with queueing new requests. 2988 * These ioctls may trigger the cancellation of a streaming 2989 * operation, and that should not be mixed with queueing a new 2990 * request at the same time. 2991 */ 2992 if (v4l2_device_supports_requests(vfd->v4l2_dev) && 2993 (cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF)) { 2994 req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex; 2995 2996 if (mutex_lock_interruptible(req_queue_lock)) 2997 return -ERESTARTSYS; 2998 } 2999 3000 lock = v4l2_ioctl_get_lock(vfd, vfh, cmd, arg); 3001 3002 if (lock && mutex_lock_interruptible(lock)) { 3003 if (req_queue_lock) 3004 mutex_unlock(req_queue_lock); 3005 return -ERESTARTSYS; 3006 } 3007 3008 if (!video_is_registered(vfd)) { 3009 ret = -ENODEV; 3010 goto unlock; 3011 } 3012 3013 if (v4l2_is_known_ioctl(cmd)) { 3014 info = &v4l2_ioctls[_IOC_NR(cmd)]; 3015 3016 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) && 3017 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler)) 3018 goto done; 3019 3020 if (vfh && (info->flags & INFO_FL_PRIO)) { 3021 ret = v4l2_prio_check(vfd->prio, vfh->prio); 3022 if (ret) 3023 goto done; 3024 } 3025 } else { 3026 default_info.ioctl = cmd; 3027 default_info.flags = 0; 3028 default_info.debug = v4l_print_default; 3029 info = &default_info; 3030 } 3031 3032 write_only = _IOC_DIR(cmd) == _IOC_WRITE; 3033 if (info != &default_info) { 3034 ret = info->func(ops, file, fh, arg); 3035 } else if (!ops->vidioc_default) { 3036 ret = -ENOTTY; 3037 } else { 3038 ret = ops->vidioc_default(file, fh, 3039 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0, 3040 cmd, arg); 3041 } 3042 3043 done: 3044 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) { 3045 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) && 3046 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF)) 3047 goto unlock; 3048 3049 v4l_printk_ioctl(video_device_node_name(vfd), cmd); 3050 if (ret < 0) 3051 pr_cont(": error %ld", ret); 3052 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG)) 3053 pr_cont("\n"); 3054 else if (_IOC_DIR(cmd) == _IOC_NONE) 3055 info->debug(arg, write_only); 3056 else { 3057 pr_cont(": "); 3058 info->debug(arg, write_only); 3059 } 3060 } 3061 3062 unlock: 3063 if (lock) 3064 mutex_unlock(lock); 3065 if (req_queue_lock) 3066 mutex_unlock(req_queue_lock); 3067 return ret; 3068 } 3069 3070 static int check_array_args(unsigned int cmd, void *parg, size_t *array_size, 3071 void __user **user_ptr, void ***kernel_ptr) 3072 { 3073 int ret = 0; 3074 3075 switch (cmd) { 3076 case VIDIOC_PREPARE_BUF: 3077 case VIDIOC_QUERYBUF: 3078 case VIDIOC_QBUF: 3079 case VIDIOC_DQBUF: { 3080 struct v4l2_buffer *buf = parg; 3081 3082 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) { 3083 if (buf->length > VIDEO_MAX_PLANES) { 3084 ret = -EINVAL; 3085 break; 3086 } 3087 *user_ptr = (void __user *)buf->m.planes; 3088 *kernel_ptr = (void **)&buf->m.planes; 3089 *array_size = sizeof(struct v4l2_plane) * buf->length; 3090 ret = 1; 3091 } 3092 break; 3093 } 3094 3095 case VIDIOC_G_EDID: 3096 case VIDIOC_S_EDID: { 3097 struct v4l2_edid *edid = parg; 3098 3099 if (edid->blocks) { 3100 if (edid->blocks > 256) { 3101 ret = -EINVAL; 3102 break; 3103 } 3104 *user_ptr = (void __user *)edid->edid; 3105 *kernel_ptr = (void **)&edid->edid; 3106 *array_size = edid->blocks * 128; 3107 ret = 1; 3108 } 3109 break; 3110 } 3111 3112 case VIDIOC_S_EXT_CTRLS: 3113 case VIDIOC_G_EXT_CTRLS: 3114 case VIDIOC_TRY_EXT_CTRLS: { 3115 struct v4l2_ext_controls *ctrls = parg; 3116 3117 if (ctrls->count != 0) { 3118 if (ctrls->count > V4L2_CID_MAX_CTRLS) { 3119 ret = -EINVAL; 3120 break; 3121 } 3122 *user_ptr = (void __user *)ctrls->controls; 3123 *kernel_ptr = (void **)&ctrls->controls; 3124 *array_size = sizeof(struct v4l2_ext_control) 3125 * ctrls->count; 3126 ret = 1; 3127 } 3128 break; 3129 } 3130 case VIDIOC_G_FMT: 3131 case VIDIOC_S_FMT: 3132 case VIDIOC_TRY_FMT: { 3133 struct v4l2_format *fmt = parg; 3134 3135 if (fmt->type != V4L2_BUF_TYPE_VIDEO_OVERLAY && 3136 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY) 3137 break; 3138 if (fmt->fmt.win.clipcount > 2048) 3139 return -EINVAL; 3140 if (!fmt->fmt.win.clipcount) 3141 break; 3142 3143 *user_ptr = (void __user *)fmt->fmt.win.clips; 3144 *kernel_ptr = (void **)&fmt->fmt.win.clips; 3145 *array_size = sizeof(struct v4l2_clip) 3146 * fmt->fmt.win.clipcount; 3147 3148 ret = 1; 3149 break; 3150 } 3151 } 3152 3153 return ret; 3154 } 3155 3156 static unsigned int video_translate_cmd(unsigned int cmd) 3157 { 3158 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3159 switch (cmd) { 3160 case VIDIOC_DQEVENT_TIME32: 3161 return VIDIOC_DQEVENT; 3162 case VIDIOC_QUERYBUF_TIME32: 3163 return VIDIOC_QUERYBUF; 3164 case VIDIOC_QBUF_TIME32: 3165 return VIDIOC_QBUF; 3166 case VIDIOC_DQBUF_TIME32: 3167 return VIDIOC_DQBUF; 3168 case VIDIOC_PREPARE_BUF_TIME32: 3169 return VIDIOC_PREPARE_BUF; 3170 } 3171 #endif 3172 if (in_compat_syscall()) 3173 return v4l2_compat_translate_cmd(cmd); 3174 3175 return cmd; 3176 } 3177 3178 static int video_get_user(void __user *arg, void *parg, 3179 unsigned int real_cmd, unsigned int cmd, 3180 bool *always_copy) 3181 { 3182 unsigned int n = _IOC_SIZE(real_cmd); 3183 int err = 0; 3184 3185 if (!(_IOC_DIR(cmd) & _IOC_WRITE)) { 3186 /* read-only ioctl */ 3187 memset(parg, 0, n); 3188 return 0; 3189 } 3190 3191 /* 3192 * In some cases, only a few fields are used as input, 3193 * i.e. when the app sets "index" and then the driver 3194 * fills in the rest of the structure for the thing 3195 * with that index. We only need to copy up the first 3196 * non-input field. 3197 */ 3198 if (v4l2_is_known_ioctl(real_cmd)) { 3199 u32 flags = v4l2_ioctls[_IOC_NR(real_cmd)].flags; 3200 3201 if (flags & INFO_FL_CLEAR_MASK) 3202 n = (flags & INFO_FL_CLEAR_MASK) >> 16; 3203 *always_copy = flags & INFO_FL_ALWAYS_COPY; 3204 } 3205 3206 if (cmd == real_cmd) { 3207 if (copy_from_user(parg, (void __user *)arg, n)) 3208 err = -EFAULT; 3209 } else if (in_compat_syscall()) { 3210 memset(parg, 0, n); 3211 err = v4l2_compat_get_user(arg, parg, cmd); 3212 } else { 3213 memset(parg, 0, n); 3214 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3215 switch (cmd) { 3216 case VIDIOC_QUERYBUF_TIME32: 3217 case VIDIOC_QBUF_TIME32: 3218 case VIDIOC_DQBUF_TIME32: 3219 case VIDIOC_PREPARE_BUF_TIME32: { 3220 struct v4l2_buffer_time32 vb32; 3221 struct v4l2_buffer *vb = parg; 3222 3223 if (copy_from_user(&vb32, arg, sizeof(vb32))) 3224 return -EFAULT; 3225 3226 *vb = (struct v4l2_buffer) { 3227 .index = vb32.index, 3228 .type = vb32.type, 3229 .bytesused = vb32.bytesused, 3230 .flags = vb32.flags, 3231 .field = vb32.field, 3232 .timestamp.tv_sec = vb32.timestamp.tv_sec, 3233 .timestamp.tv_usec = vb32.timestamp.tv_usec, 3234 .timecode = vb32.timecode, 3235 .sequence = vb32.sequence, 3236 .memory = vb32.memory, 3237 .m.userptr = vb32.m.userptr, 3238 .length = vb32.length, 3239 .request_fd = vb32.request_fd, 3240 }; 3241 break; 3242 } 3243 } 3244 #endif 3245 } 3246 3247 /* zero out anything we don't copy from userspace */ 3248 if (!err && n < _IOC_SIZE(real_cmd)) 3249 memset((u8 *)parg + n, 0, _IOC_SIZE(real_cmd) - n); 3250 return err; 3251 } 3252 3253 static int video_put_user(void __user *arg, void *parg, 3254 unsigned int real_cmd, unsigned int cmd) 3255 { 3256 if (!(_IOC_DIR(cmd) & _IOC_READ)) 3257 return 0; 3258 3259 if (cmd == real_cmd) { 3260 /* Copy results into user buffer */ 3261 if (copy_to_user(arg, parg, _IOC_SIZE(cmd))) 3262 return -EFAULT; 3263 return 0; 3264 } 3265 3266 if (in_compat_syscall()) 3267 return v4l2_compat_put_user(arg, parg, cmd); 3268 3269 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3270 switch (cmd) { 3271 case VIDIOC_DQEVENT_TIME32: { 3272 struct v4l2_event *ev = parg; 3273 struct v4l2_event_time32 ev32; 3274 3275 memset(&ev32, 0, sizeof(ev32)); 3276 3277 ev32.type = ev->type; 3278 ev32.pending = ev->pending; 3279 ev32.sequence = ev->sequence; 3280 ev32.timestamp.tv_sec = ev->timestamp.tv_sec; 3281 ev32.timestamp.tv_nsec = ev->timestamp.tv_nsec; 3282 ev32.id = ev->id; 3283 3284 memcpy(&ev32.u, &ev->u, sizeof(ev->u)); 3285 memcpy(&ev32.reserved, &ev->reserved, sizeof(ev->reserved)); 3286 3287 if (copy_to_user(arg, &ev32, sizeof(ev32))) 3288 return -EFAULT; 3289 break; 3290 } 3291 case VIDIOC_QUERYBUF_TIME32: 3292 case VIDIOC_QBUF_TIME32: 3293 case VIDIOC_DQBUF_TIME32: 3294 case VIDIOC_PREPARE_BUF_TIME32: { 3295 struct v4l2_buffer *vb = parg; 3296 struct v4l2_buffer_time32 vb32; 3297 3298 memset(&vb32, 0, sizeof(vb32)); 3299 3300 vb32.index = vb->index; 3301 vb32.type = vb->type; 3302 vb32.bytesused = vb->bytesused; 3303 vb32.flags = vb->flags; 3304 vb32.field = vb->field; 3305 vb32.timestamp.tv_sec = vb->timestamp.tv_sec; 3306 vb32.timestamp.tv_usec = vb->timestamp.tv_usec; 3307 vb32.timecode = vb->timecode; 3308 vb32.sequence = vb->sequence; 3309 vb32.memory = vb->memory; 3310 vb32.m.userptr = vb->m.userptr; 3311 vb32.length = vb->length; 3312 vb32.request_fd = vb->request_fd; 3313 3314 if (copy_to_user(arg, &vb32, sizeof(vb32))) 3315 return -EFAULT; 3316 break; 3317 } 3318 } 3319 #endif 3320 3321 return 0; 3322 } 3323 3324 long 3325 video_usercopy(struct file *file, unsigned int orig_cmd, unsigned long arg, 3326 v4l2_kioctl func) 3327 { 3328 char sbuf[128]; 3329 void *mbuf = NULL, *array_buf = NULL; 3330 void *parg = (void *)arg; 3331 long err = -EINVAL; 3332 bool has_array_args; 3333 bool always_copy = false; 3334 size_t array_size = 0; 3335 void __user *user_ptr = NULL; 3336 void **kernel_ptr = NULL; 3337 unsigned int cmd = video_translate_cmd(orig_cmd); 3338 const size_t ioc_size = _IOC_SIZE(cmd); 3339 3340 /* Copy arguments into temp kernel buffer */ 3341 if (_IOC_DIR(cmd) != _IOC_NONE) { 3342 if (ioc_size <= sizeof(sbuf)) { 3343 parg = sbuf; 3344 } else { 3345 /* too big to allocate from stack */ 3346 mbuf = kmalloc(ioc_size, GFP_KERNEL); 3347 if (NULL == mbuf) 3348 return -ENOMEM; 3349 parg = mbuf; 3350 } 3351 3352 err = video_get_user((void __user *)arg, parg, cmd, 3353 orig_cmd, &always_copy); 3354 if (err) 3355 goto out; 3356 } 3357 3358 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr); 3359 if (err < 0) 3360 goto out; 3361 has_array_args = err; 3362 3363 if (has_array_args) { 3364 array_buf = kvmalloc(array_size, GFP_KERNEL); 3365 err = -ENOMEM; 3366 if (array_buf == NULL) 3367 goto out; 3368 if (in_compat_syscall()) 3369 err = v4l2_compat_get_array_args(file, array_buf, 3370 user_ptr, array_size, 3371 orig_cmd, parg); 3372 else 3373 err = copy_from_user(array_buf, user_ptr, array_size) ? 3374 -EFAULT : 0; 3375 if (err) 3376 goto out; 3377 *kernel_ptr = array_buf; 3378 } 3379 3380 /* Handles IOCTL */ 3381 err = func(file, cmd, parg); 3382 if (err == -ENOTTY || err == -ENOIOCTLCMD) { 3383 err = -ENOTTY; 3384 goto out; 3385 } 3386 3387 if (err == 0) { 3388 if (cmd == VIDIOC_DQBUF) 3389 trace_v4l2_dqbuf(video_devdata(file)->minor, parg); 3390 else if (cmd == VIDIOC_QBUF) 3391 trace_v4l2_qbuf(video_devdata(file)->minor, parg); 3392 } 3393 3394 /* 3395 * Some ioctls can return an error, but still have valid 3396 * results that must be returned. 3397 */ 3398 if (err < 0 && !always_copy) 3399 goto out; 3400 3401 if (has_array_args) { 3402 *kernel_ptr = (void __force *)user_ptr; 3403 if (in_compat_syscall()) { 3404 int put_err; 3405 3406 put_err = v4l2_compat_put_array_args(file, user_ptr, 3407 array_buf, 3408 array_size, 3409 orig_cmd, parg); 3410 if (put_err) 3411 err = put_err; 3412 } else if (copy_to_user(user_ptr, array_buf, array_size)) { 3413 err = -EFAULT; 3414 } 3415 } 3416 3417 if (video_put_user((void __user *)arg, parg, cmd, orig_cmd)) 3418 err = -EFAULT; 3419 out: 3420 kvfree(array_buf); 3421 kfree(mbuf); 3422 return err; 3423 } 3424 3425 long video_ioctl2(struct file *file, 3426 unsigned int cmd, unsigned long arg) 3427 { 3428 return video_usercopy(file, cmd, arg, __video_do_ioctl); 3429 } 3430 EXPORT_SYMBOL(video_ioctl2); 3431