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_RGBX1010102: descr = "32-bit RGBX 10-10-10-2"; break; 1302 case V4L2_PIX_FMT_RGBA1010102: descr = "32-bit RGBA 10-10-10-2"; break; 1303 case V4L2_PIX_FMT_ARGB2101010: descr = "32-bit ARGB 2-10-10-10"; break; 1304 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break; 1305 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break; 1306 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break; 1307 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break; 1308 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break; 1309 case V4L2_PIX_FMT_Y14: descr = "14-bit Greyscale"; break; 1310 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break; 1311 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break; 1312 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break; 1313 case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break; 1314 case V4L2_PIX_FMT_IPU3_Y10: descr = "10-bit greyscale (IPU3 Packed)"; break; 1315 case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break; 1316 case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break; 1317 case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break; 1318 case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break; 1319 case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break; 1320 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break; 1321 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break; 1322 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break; 1323 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break; 1324 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break; 1325 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break; 1326 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break; 1327 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break; 1328 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break; 1329 case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break; 1330 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break; 1331 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break; 1332 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break; 1333 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break; 1334 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break; 1335 case V4L2_PIX_FMT_YUV24: descr = "24-bit YUV 4:4:4 8-8-8"; break; 1336 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break; 1337 case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break; 1338 case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break; 1339 case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break; 1340 case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break; 1341 case V4L2_PIX_FMT_YUVA32: descr = "32-bit YUVA 8-8-8-8"; break; 1342 case V4L2_PIX_FMT_YUVX32: descr = "32-bit YUVX 8-8-8-8"; break; 1343 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break; 1344 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break; 1345 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break; 1346 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break; 1347 case V4L2_PIX_FMT_NV12: descr = "Y/UV 4:2:0"; break; 1348 case V4L2_PIX_FMT_NV21: descr = "Y/VU 4:2:0"; break; 1349 case V4L2_PIX_FMT_NV16: descr = "Y/UV 4:2:2"; break; 1350 case V4L2_PIX_FMT_NV61: descr = "Y/VU 4:2:2"; break; 1351 case V4L2_PIX_FMT_NV24: descr = "Y/UV 4:4:4"; break; 1352 case V4L2_PIX_FMT_NV42: descr = "Y/VU 4:4:4"; break; 1353 case V4L2_PIX_FMT_P010: descr = "10-bit Y/UV 4:2:0"; break; 1354 case V4L2_PIX_FMT_NV12_4L4: descr = "Y/UV 4:2:0 (4x4 Linear)"; break; 1355 case V4L2_PIX_FMT_NV12_16L16: descr = "Y/UV 4:2:0 (16x16 Linear)"; break; 1356 case V4L2_PIX_FMT_NV12_32L32: descr = "Y/UV 4:2:0 (32x32 Linear)"; break; 1357 case V4L2_PIX_FMT_P010_4L4: descr = "10-bit Y/UV 4:2:0 (4x4 Linear)"; break; 1358 case V4L2_PIX_FMT_NV12M: descr = "Y/UV 4:2:0 (N-C)"; break; 1359 case V4L2_PIX_FMT_NV21M: descr = "Y/VU 4:2:0 (N-C)"; break; 1360 case V4L2_PIX_FMT_NV16M: descr = "Y/UV 4:2:2 (N-C)"; break; 1361 case V4L2_PIX_FMT_NV61M: descr = "Y/VU 4:2:2 (N-C)"; break; 1362 case V4L2_PIX_FMT_NV12MT: descr = "Y/UV 4:2:0 (64x32 MB, N-C)"; break; 1363 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/UV 4:2:0 (16x16 MB, N-C)"; break; 1364 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break; 1365 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break; 1366 case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break; 1367 case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break; 1368 case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break; 1369 case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break; 1370 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break; 1371 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break; 1372 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break; 1373 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break; 1374 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break; 1375 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break; 1376 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break; 1377 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break; 1378 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break; 1379 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break; 1380 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break; 1381 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break; 1382 case V4L2_PIX_FMT_IPU3_SBGGR10: descr = "10-bit bayer BGGR IPU3 Packed"; break; 1383 case V4L2_PIX_FMT_IPU3_SGBRG10: descr = "10-bit bayer GBRG IPU3 Packed"; break; 1384 case V4L2_PIX_FMT_IPU3_SGRBG10: descr = "10-bit bayer GRBG IPU3 Packed"; break; 1385 case V4L2_PIX_FMT_IPU3_SRGGB10: descr = "10-bit bayer RGGB IPU3 Packed"; break; 1386 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break; 1387 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break; 1388 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break; 1389 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break; 1390 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break; 1391 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break; 1392 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break; 1393 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break; 1394 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break; 1395 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break; 1396 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break; 1397 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break; 1398 case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break; 1399 case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break; 1400 case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break; 1401 case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break; 1402 case V4L2_PIX_FMT_SBGGR14: descr = "14-bit Bayer BGBG/GRGR"; break; 1403 case V4L2_PIX_FMT_SGBRG14: descr = "14-bit Bayer GBGB/RGRG"; break; 1404 case V4L2_PIX_FMT_SGRBG14: descr = "14-bit Bayer GRGR/BGBG"; break; 1405 case V4L2_PIX_FMT_SRGGB14: descr = "14-bit Bayer RGRG/GBGB"; break; 1406 case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break; 1407 case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break; 1408 case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break; 1409 case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break; 1410 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break; 1411 case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break; 1412 case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break; 1413 case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break; 1414 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break; 1415 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break; 1416 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break; 1417 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break; 1418 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break; 1419 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break; 1420 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break; 1421 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break; 1422 case V4L2_PIX_FMT_MM21: descr = "Mediatek 8-bit Block Format"; break; 1423 case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break; 1424 case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break; 1425 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break; 1426 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break; 1427 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break; 1428 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break; 1429 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break; 1430 case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break; 1431 case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break; 1432 case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break; 1433 case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit Signed Deltas"; break; 1434 case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit Signed Deltas"; break; 1435 case V4L2_TCH_FMT_TU16: descr = "16-bit Unsigned Touch Data"; break; 1436 case V4L2_TCH_FMT_TU08: descr = "8-bit Unsigned Touch Data"; break; 1437 case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break; 1438 case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break; 1439 case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break; 1440 case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break; 1441 case V4L2_META_FMT_VIVID: descr = "Vivid Metadata"; break; 1442 case V4L2_META_FMT_RK_ISP1_PARAMS: descr = "Rockchip ISP1 3A Parameters"; break; 1443 case V4L2_META_FMT_RK_ISP1_STAT_3A: descr = "Rockchip ISP1 3A Statistics"; break; 1444 case V4L2_PIX_FMT_NV12_8L128: descr = "NV12 (8x128 Linear)"; break; 1445 case V4L2_PIX_FMT_NV12M_8L128: descr = "NV12M (8x128 Linear)"; break; 1446 case V4L2_PIX_FMT_NV12_10BE_8L128: descr = "10-bit NV12 (8x128 Linear, BE)"; break; 1447 case V4L2_PIX_FMT_NV12M_10BE_8L128: descr = "10-bit NV12M (8x128 Linear, BE)"; break; 1448 case V4L2_PIX_FMT_Y210: descr = "10-bit YUYV Packed"; break; 1449 case V4L2_PIX_FMT_Y212: descr = "12-bit YUYV Packed"; break; 1450 case V4L2_PIX_FMT_Y216: descr = "16-bit YUYV Packed"; break; 1451 1452 default: 1453 /* Compressed formats */ 1454 flags = V4L2_FMT_FLAG_COMPRESSED; 1455 switch (fmt->pixelformat) { 1456 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1457 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break; 1458 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break; 1459 case V4L2_PIX_FMT_DV: descr = "1394"; break; 1460 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break; 1461 case V4L2_PIX_FMT_H264: descr = "H.264"; break; 1462 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break; 1463 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break; 1464 case V4L2_PIX_FMT_H264_SLICE: descr = "H.264 Parsed Slice Data"; break; 1465 case V4L2_PIX_FMT_H263: descr = "H.263"; break; 1466 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break; 1467 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break; 1468 case V4L2_PIX_FMT_MPEG2_SLICE: descr = "MPEG-2 Parsed Slice Data"; break; 1469 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 Part 2 ES"; break; 1470 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break; 1471 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break; 1472 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break; 1473 case V4L2_PIX_FMT_VP8: descr = "VP8"; break; 1474 case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break; 1475 case V4L2_PIX_FMT_VP9: descr = "VP9"; break; 1476 case V4L2_PIX_FMT_VP9_FRAME: descr = "VP9 Frame"; break; 1477 case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */ 1478 case V4L2_PIX_FMT_HEVC_SLICE: descr = "HEVC Parsed Slice Data"; break; 1479 case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */ 1480 case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */ 1481 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break; 1482 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break; 1483 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break; 1484 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break; 1485 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break; 1486 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break; 1487 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break; 1488 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break; 1489 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break; 1490 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break; 1491 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break; 1492 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break; 1493 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break; 1494 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break; 1495 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break; 1496 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break; 1497 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break; 1498 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break; 1499 case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break; 1500 case V4L2_PIX_FMT_QC08C: descr = "QCOM Compressed 8-bit Format"; break; 1501 case V4L2_PIX_FMT_QC10C: descr = "QCOM Compressed 10-bit Format"; break; 1502 case V4L2_PIX_FMT_AJPG: descr = "Aspeed JPEG"; break; 1503 default: 1504 if (fmt->description[0]) 1505 return; 1506 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat); 1507 flags = 0; 1508 snprintf(fmt->description, sz, "%p4cc", 1509 &fmt->pixelformat); 1510 break; 1511 } 1512 } 1513 1514 if (descr) 1515 WARN_ON(strscpy(fmt->description, descr, sz) < 0); 1516 fmt->flags |= flags; 1517 } 1518 1519 static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops, 1520 struct file *file, void *fh, void *arg) 1521 { 1522 struct video_device *vdev = video_devdata(file); 1523 struct v4l2_fmtdesc *p = arg; 1524 int ret = check_fmt(file, p->type); 1525 u32 mbus_code; 1526 u32 cap_mask; 1527 1528 if (ret) 1529 return ret; 1530 ret = -EINVAL; 1531 1532 if (!(vdev->device_caps & V4L2_CAP_IO_MC)) 1533 p->mbus_code = 0; 1534 1535 mbus_code = p->mbus_code; 1536 memset_after(p, 0, type); 1537 p->mbus_code = mbus_code; 1538 1539 switch (p->type) { 1540 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1541 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1542 cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE | 1543 V4L2_CAP_VIDEO_M2M_MPLANE; 1544 if (!!(vdev->device_caps & cap_mask) != 1545 (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) 1546 break; 1547 1548 if (unlikely(!ops->vidioc_enum_fmt_vid_cap)) 1549 break; 1550 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg); 1551 break; 1552 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1553 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay)) 1554 break; 1555 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg); 1556 break; 1557 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1558 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1559 cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE | 1560 V4L2_CAP_VIDEO_M2M_MPLANE; 1561 if (!!(vdev->device_caps & cap_mask) != 1562 (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)) 1563 break; 1564 1565 if (unlikely(!ops->vidioc_enum_fmt_vid_out)) 1566 break; 1567 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg); 1568 break; 1569 case V4L2_BUF_TYPE_SDR_CAPTURE: 1570 if (unlikely(!ops->vidioc_enum_fmt_sdr_cap)) 1571 break; 1572 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg); 1573 break; 1574 case V4L2_BUF_TYPE_SDR_OUTPUT: 1575 if (unlikely(!ops->vidioc_enum_fmt_sdr_out)) 1576 break; 1577 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg); 1578 break; 1579 case V4L2_BUF_TYPE_META_CAPTURE: 1580 if (unlikely(!ops->vidioc_enum_fmt_meta_cap)) 1581 break; 1582 ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg); 1583 break; 1584 case V4L2_BUF_TYPE_META_OUTPUT: 1585 if (unlikely(!ops->vidioc_enum_fmt_meta_out)) 1586 break; 1587 ret = ops->vidioc_enum_fmt_meta_out(file, fh, arg); 1588 break; 1589 } 1590 if (ret == 0) 1591 v4l_fill_fmtdesc(p); 1592 return ret; 1593 } 1594 1595 static void v4l_pix_format_touch(struct v4l2_pix_format *p) 1596 { 1597 /* 1598 * The v4l2_pix_format structure contains fields that make no sense for 1599 * touch. Set them to default values in this case. 1600 */ 1601 1602 p->field = V4L2_FIELD_NONE; 1603 p->colorspace = V4L2_COLORSPACE_RAW; 1604 p->flags = 0; 1605 p->ycbcr_enc = 0; 1606 p->quantization = 0; 1607 p->xfer_func = 0; 1608 } 1609 1610 static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, 1611 struct file *file, void *fh, void *arg) 1612 { 1613 struct v4l2_format *p = arg; 1614 struct video_device *vfd = video_devdata(file); 1615 int ret = check_fmt(file, p->type); 1616 1617 if (ret) 1618 return ret; 1619 1620 /* 1621 * fmt can't be cleared for these overlay types due to the 'clips' 1622 * 'clipcount' and 'bitmap' pointers in struct v4l2_window. 1623 * Those are provided by the user. So handle these two overlay types 1624 * first, and then just do a simple memset for the other types. 1625 */ 1626 switch (p->type) { 1627 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1628 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: { 1629 struct v4l2_clip *clips = p->fmt.win.clips; 1630 u32 clipcount = p->fmt.win.clipcount; 1631 void __user *bitmap = p->fmt.win.bitmap; 1632 1633 memset(&p->fmt, 0, sizeof(p->fmt)); 1634 p->fmt.win.clips = clips; 1635 p->fmt.win.clipcount = clipcount; 1636 p->fmt.win.bitmap = bitmap; 1637 break; 1638 } 1639 default: 1640 memset(&p->fmt, 0, sizeof(p->fmt)); 1641 break; 1642 } 1643 1644 switch (p->type) { 1645 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1646 if (unlikely(!ops->vidioc_g_fmt_vid_cap)) 1647 break; 1648 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1649 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg); 1650 /* just in case the driver zeroed it again */ 1651 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1652 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1653 v4l_pix_format_touch(&p->fmt.pix); 1654 return ret; 1655 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1656 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg); 1657 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1658 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg); 1659 case V4L2_BUF_TYPE_VBI_CAPTURE: 1660 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg); 1661 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1662 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg); 1663 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1664 if (unlikely(!ops->vidioc_g_fmt_vid_out)) 1665 break; 1666 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1667 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg); 1668 /* just in case the driver zeroed it again */ 1669 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1670 return ret; 1671 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1672 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg); 1673 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1674 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg); 1675 case V4L2_BUF_TYPE_VBI_OUTPUT: 1676 return ops->vidioc_g_fmt_vbi_out(file, fh, arg); 1677 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1678 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg); 1679 case V4L2_BUF_TYPE_SDR_CAPTURE: 1680 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg); 1681 case V4L2_BUF_TYPE_SDR_OUTPUT: 1682 return ops->vidioc_g_fmt_sdr_out(file, fh, arg); 1683 case V4L2_BUF_TYPE_META_CAPTURE: 1684 return ops->vidioc_g_fmt_meta_cap(file, fh, arg); 1685 case V4L2_BUF_TYPE_META_OUTPUT: 1686 return ops->vidioc_g_fmt_meta_out(file, fh, arg); 1687 } 1688 return -EINVAL; 1689 } 1690 1691 static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, 1692 struct file *file, void *fh, void *arg) 1693 { 1694 struct v4l2_format *p = arg; 1695 struct video_device *vfd = video_devdata(file); 1696 int ret = check_fmt(file, p->type); 1697 unsigned int i; 1698 1699 if (ret) 1700 return ret; 1701 1702 ret = v4l_enable_media_source(vfd); 1703 if (ret) 1704 return ret; 1705 v4l_sanitize_format(p); 1706 1707 switch (p->type) { 1708 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1709 if (unlikely(!ops->vidioc_s_fmt_vid_cap)) 1710 break; 1711 memset_after(p, 0, fmt.pix); 1712 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg); 1713 /* just in case the driver zeroed it again */ 1714 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1715 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1716 v4l_pix_format_touch(&p->fmt.pix); 1717 return ret; 1718 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1719 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane)) 1720 break; 1721 memset_after(p, 0, fmt.pix_mp.xfer_func); 1722 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1723 memset_after(&p->fmt.pix_mp.plane_fmt[i], 1724 0, bytesperline); 1725 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg); 1726 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1727 if (unlikely(!ops->vidioc_s_fmt_vid_overlay)) 1728 break; 1729 memset_after(p, 0, fmt.win); 1730 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg); 1731 case V4L2_BUF_TYPE_VBI_CAPTURE: 1732 if (unlikely(!ops->vidioc_s_fmt_vbi_cap)) 1733 break; 1734 memset_after(p, 0, fmt.vbi.flags); 1735 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg); 1736 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1737 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap)) 1738 break; 1739 memset_after(p, 0, fmt.sliced.io_size); 1740 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg); 1741 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1742 if (unlikely(!ops->vidioc_s_fmt_vid_out)) 1743 break; 1744 memset_after(p, 0, fmt.pix); 1745 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg); 1746 /* just in case the driver zeroed it again */ 1747 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1748 return ret; 1749 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1750 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane)) 1751 break; 1752 memset_after(p, 0, fmt.pix_mp.xfer_func); 1753 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1754 memset_after(&p->fmt.pix_mp.plane_fmt[i], 1755 0, bytesperline); 1756 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg); 1757 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1758 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay)) 1759 break; 1760 memset_after(p, 0, fmt.win); 1761 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg); 1762 case V4L2_BUF_TYPE_VBI_OUTPUT: 1763 if (unlikely(!ops->vidioc_s_fmt_vbi_out)) 1764 break; 1765 memset_after(p, 0, fmt.vbi.flags); 1766 return ops->vidioc_s_fmt_vbi_out(file, fh, arg); 1767 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1768 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out)) 1769 break; 1770 memset_after(p, 0, fmt.sliced.io_size); 1771 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg); 1772 case V4L2_BUF_TYPE_SDR_CAPTURE: 1773 if (unlikely(!ops->vidioc_s_fmt_sdr_cap)) 1774 break; 1775 memset_after(p, 0, fmt.sdr.buffersize); 1776 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg); 1777 case V4L2_BUF_TYPE_SDR_OUTPUT: 1778 if (unlikely(!ops->vidioc_s_fmt_sdr_out)) 1779 break; 1780 memset_after(p, 0, fmt.sdr.buffersize); 1781 return ops->vidioc_s_fmt_sdr_out(file, fh, arg); 1782 case V4L2_BUF_TYPE_META_CAPTURE: 1783 if (unlikely(!ops->vidioc_s_fmt_meta_cap)) 1784 break; 1785 memset_after(p, 0, fmt.meta); 1786 return ops->vidioc_s_fmt_meta_cap(file, fh, arg); 1787 case V4L2_BUF_TYPE_META_OUTPUT: 1788 if (unlikely(!ops->vidioc_s_fmt_meta_out)) 1789 break; 1790 memset_after(p, 0, fmt.meta); 1791 return ops->vidioc_s_fmt_meta_out(file, fh, arg); 1792 } 1793 return -EINVAL; 1794 } 1795 1796 static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, 1797 struct file *file, void *fh, void *arg) 1798 { 1799 struct v4l2_format *p = arg; 1800 struct video_device *vfd = video_devdata(file); 1801 int ret = check_fmt(file, p->type); 1802 unsigned int i; 1803 1804 if (ret) 1805 return ret; 1806 1807 v4l_sanitize_format(p); 1808 1809 switch (p->type) { 1810 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1811 if (unlikely(!ops->vidioc_try_fmt_vid_cap)) 1812 break; 1813 memset_after(p, 0, fmt.pix); 1814 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg); 1815 /* just in case the driver zeroed it again */ 1816 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1817 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1818 v4l_pix_format_touch(&p->fmt.pix); 1819 return ret; 1820 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1821 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane)) 1822 break; 1823 memset_after(p, 0, fmt.pix_mp.xfer_func); 1824 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1825 memset_after(&p->fmt.pix_mp.plane_fmt[i], 1826 0, bytesperline); 1827 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg); 1828 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1829 if (unlikely(!ops->vidioc_try_fmt_vid_overlay)) 1830 break; 1831 memset_after(p, 0, fmt.win); 1832 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg); 1833 case V4L2_BUF_TYPE_VBI_CAPTURE: 1834 if (unlikely(!ops->vidioc_try_fmt_vbi_cap)) 1835 break; 1836 memset_after(p, 0, fmt.vbi.flags); 1837 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg); 1838 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1839 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap)) 1840 break; 1841 memset_after(p, 0, fmt.sliced.io_size); 1842 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg); 1843 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1844 if (unlikely(!ops->vidioc_try_fmt_vid_out)) 1845 break; 1846 memset_after(p, 0, fmt.pix); 1847 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg); 1848 /* just in case the driver zeroed it again */ 1849 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1850 return ret; 1851 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1852 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane)) 1853 break; 1854 memset_after(p, 0, fmt.pix_mp.xfer_func); 1855 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1856 memset_after(&p->fmt.pix_mp.plane_fmt[i], 1857 0, bytesperline); 1858 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg); 1859 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1860 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay)) 1861 break; 1862 memset_after(p, 0, fmt.win); 1863 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg); 1864 case V4L2_BUF_TYPE_VBI_OUTPUT: 1865 if (unlikely(!ops->vidioc_try_fmt_vbi_out)) 1866 break; 1867 memset_after(p, 0, fmt.vbi.flags); 1868 return ops->vidioc_try_fmt_vbi_out(file, fh, arg); 1869 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1870 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out)) 1871 break; 1872 memset_after(p, 0, fmt.sliced.io_size); 1873 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg); 1874 case V4L2_BUF_TYPE_SDR_CAPTURE: 1875 if (unlikely(!ops->vidioc_try_fmt_sdr_cap)) 1876 break; 1877 memset_after(p, 0, fmt.sdr.buffersize); 1878 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg); 1879 case V4L2_BUF_TYPE_SDR_OUTPUT: 1880 if (unlikely(!ops->vidioc_try_fmt_sdr_out)) 1881 break; 1882 memset_after(p, 0, fmt.sdr.buffersize); 1883 return ops->vidioc_try_fmt_sdr_out(file, fh, arg); 1884 case V4L2_BUF_TYPE_META_CAPTURE: 1885 if (unlikely(!ops->vidioc_try_fmt_meta_cap)) 1886 break; 1887 memset_after(p, 0, fmt.meta); 1888 return ops->vidioc_try_fmt_meta_cap(file, fh, arg); 1889 case V4L2_BUF_TYPE_META_OUTPUT: 1890 if (unlikely(!ops->vidioc_try_fmt_meta_out)) 1891 break; 1892 memset_after(p, 0, fmt.meta); 1893 return ops->vidioc_try_fmt_meta_out(file, fh, arg); 1894 } 1895 return -EINVAL; 1896 } 1897 1898 static int v4l_streamon(const struct v4l2_ioctl_ops *ops, 1899 struct file *file, void *fh, void *arg) 1900 { 1901 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg); 1902 } 1903 1904 static int v4l_streamoff(const struct v4l2_ioctl_ops *ops, 1905 struct file *file, void *fh, void *arg) 1906 { 1907 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg); 1908 } 1909 1910 static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops, 1911 struct file *file, void *fh, void *arg) 1912 { 1913 struct video_device *vfd = video_devdata(file); 1914 struct v4l2_tuner *p = arg; 1915 int err; 1916 1917 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1918 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1919 err = ops->vidioc_g_tuner(file, fh, p); 1920 if (!err) 1921 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1922 return err; 1923 } 1924 1925 static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops, 1926 struct file *file, void *fh, void *arg) 1927 { 1928 struct video_device *vfd = video_devdata(file); 1929 struct v4l2_tuner *p = arg; 1930 int ret; 1931 1932 ret = v4l_enable_media_source(vfd); 1933 if (ret) 1934 return ret; 1935 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1936 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1937 return ops->vidioc_s_tuner(file, fh, p); 1938 } 1939 1940 static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops, 1941 struct file *file, void *fh, void *arg) 1942 { 1943 struct video_device *vfd = video_devdata(file); 1944 struct v4l2_modulator *p = arg; 1945 int err; 1946 1947 if (vfd->vfl_type == VFL_TYPE_RADIO) 1948 p->type = V4L2_TUNER_RADIO; 1949 1950 err = ops->vidioc_g_modulator(file, fh, p); 1951 if (!err) 1952 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1953 return err; 1954 } 1955 1956 static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops, 1957 struct file *file, void *fh, void *arg) 1958 { 1959 struct video_device *vfd = video_devdata(file); 1960 struct v4l2_modulator *p = arg; 1961 1962 if (vfd->vfl_type == VFL_TYPE_RADIO) 1963 p->type = V4L2_TUNER_RADIO; 1964 1965 return ops->vidioc_s_modulator(file, fh, p); 1966 } 1967 1968 static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops, 1969 struct file *file, void *fh, void *arg) 1970 { 1971 struct video_device *vfd = video_devdata(file); 1972 struct v4l2_frequency *p = arg; 1973 1974 if (vfd->vfl_type == VFL_TYPE_SDR) 1975 p->type = V4L2_TUNER_SDR; 1976 else 1977 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1978 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1979 return ops->vidioc_g_frequency(file, fh, p); 1980 } 1981 1982 static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops, 1983 struct file *file, void *fh, void *arg) 1984 { 1985 struct video_device *vfd = video_devdata(file); 1986 const struct v4l2_frequency *p = arg; 1987 enum v4l2_tuner_type type; 1988 int ret; 1989 1990 ret = v4l_enable_media_source(vfd); 1991 if (ret) 1992 return ret; 1993 if (vfd->vfl_type == VFL_TYPE_SDR) { 1994 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 1995 return -EINVAL; 1996 } else { 1997 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1998 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1999 if (type != p->type) 2000 return -EINVAL; 2001 } 2002 return ops->vidioc_s_frequency(file, fh, p); 2003 } 2004 2005 static int v4l_enumstd(const struct v4l2_ioctl_ops *ops, 2006 struct file *file, void *fh, void *arg) 2007 { 2008 struct video_device *vfd = video_devdata(file); 2009 struct v4l2_standard *p = arg; 2010 2011 return v4l_video_std_enumstd(p, vfd->tvnorms); 2012 } 2013 2014 static int v4l_s_std(const struct v4l2_ioctl_ops *ops, 2015 struct file *file, void *fh, void *arg) 2016 { 2017 struct video_device *vfd = video_devdata(file); 2018 v4l2_std_id id = *(v4l2_std_id *)arg, norm; 2019 int ret; 2020 2021 ret = v4l_enable_media_source(vfd); 2022 if (ret) 2023 return ret; 2024 norm = id & vfd->tvnorms; 2025 if (vfd->tvnorms && !norm) /* Check if std is supported */ 2026 return -EINVAL; 2027 2028 /* Calls the specific handler */ 2029 return ops->vidioc_s_std(file, fh, norm); 2030 } 2031 2032 static int v4l_querystd(const struct v4l2_ioctl_ops *ops, 2033 struct file *file, void *fh, void *arg) 2034 { 2035 struct video_device *vfd = video_devdata(file); 2036 v4l2_std_id *p = arg; 2037 int ret; 2038 2039 ret = v4l_enable_media_source(vfd); 2040 if (ret) 2041 return ret; 2042 /* 2043 * If no signal is detected, then the driver should return 2044 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with 2045 * any standards that do not apply removed. 2046 * 2047 * This means that tuners, audio and video decoders can join 2048 * their efforts to improve the standards detection. 2049 */ 2050 *p = vfd->tvnorms; 2051 return ops->vidioc_querystd(file, fh, arg); 2052 } 2053 2054 static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops, 2055 struct file *file, void *fh, void *arg) 2056 { 2057 struct video_device *vfd = video_devdata(file); 2058 struct v4l2_hw_freq_seek *p = arg; 2059 enum v4l2_tuner_type type; 2060 int ret; 2061 2062 ret = v4l_enable_media_source(vfd); 2063 if (ret) 2064 return ret; 2065 /* s_hw_freq_seek is not supported for SDR for now */ 2066 if (vfd->vfl_type == VFL_TYPE_SDR) 2067 return -EINVAL; 2068 2069 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2070 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2071 if (p->type != type) 2072 return -EINVAL; 2073 return ops->vidioc_s_hw_freq_seek(file, fh, p); 2074 } 2075 2076 static int v4l_overlay(const struct v4l2_ioctl_ops *ops, 2077 struct file *file, void *fh, void *arg) 2078 { 2079 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg); 2080 } 2081 2082 static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops, 2083 struct file *file, void *fh, void *arg) 2084 { 2085 struct v4l2_requestbuffers *p = arg; 2086 int ret = check_fmt(file, p->type); 2087 2088 if (ret) 2089 return ret; 2090 2091 memset_after(p, 0, flags); 2092 2093 return ops->vidioc_reqbufs(file, fh, p); 2094 } 2095 2096 static int v4l_querybuf(const struct v4l2_ioctl_ops *ops, 2097 struct file *file, void *fh, void *arg) 2098 { 2099 struct v4l2_buffer *p = arg; 2100 int ret = check_fmt(file, p->type); 2101 2102 return ret ? ret : ops->vidioc_querybuf(file, fh, p); 2103 } 2104 2105 static int v4l_qbuf(const struct v4l2_ioctl_ops *ops, 2106 struct file *file, void *fh, void *arg) 2107 { 2108 struct v4l2_buffer *p = arg; 2109 int ret = check_fmt(file, p->type); 2110 2111 return ret ? ret : ops->vidioc_qbuf(file, fh, p); 2112 } 2113 2114 static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops, 2115 struct file *file, void *fh, void *arg) 2116 { 2117 struct v4l2_buffer *p = arg; 2118 int ret = check_fmt(file, p->type); 2119 2120 return ret ? ret : ops->vidioc_dqbuf(file, fh, p); 2121 } 2122 2123 static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops, 2124 struct file *file, void *fh, void *arg) 2125 { 2126 struct v4l2_create_buffers *create = arg; 2127 int ret = check_fmt(file, create->format.type); 2128 2129 if (ret) 2130 return ret; 2131 2132 memset_after(create, 0, flags); 2133 2134 v4l_sanitize_format(&create->format); 2135 2136 ret = ops->vidioc_create_bufs(file, fh, create); 2137 2138 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 2139 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT) 2140 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 2141 2142 return ret; 2143 } 2144 2145 static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops, 2146 struct file *file, void *fh, void *arg) 2147 { 2148 struct v4l2_buffer *b = arg; 2149 int ret = check_fmt(file, b->type); 2150 2151 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b); 2152 } 2153 2154 static int v4l_g_parm(const struct v4l2_ioctl_ops *ops, 2155 struct file *file, void *fh, void *arg) 2156 { 2157 struct video_device *vfd = video_devdata(file); 2158 struct v4l2_streamparm *p = arg; 2159 v4l2_std_id std; 2160 int ret = check_fmt(file, p->type); 2161 2162 if (ret) 2163 return ret; 2164 if (ops->vidioc_g_parm) 2165 return ops->vidioc_g_parm(file, fh, p); 2166 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && 2167 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2168 return -EINVAL; 2169 if (vfd->device_caps & V4L2_CAP_READWRITE) 2170 p->parm.capture.readbuffers = 2; 2171 ret = ops->vidioc_g_std(file, fh, &std); 2172 if (ret == 0) 2173 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe); 2174 return ret; 2175 } 2176 2177 static int v4l_s_parm(const struct v4l2_ioctl_ops *ops, 2178 struct file *file, void *fh, void *arg) 2179 { 2180 struct v4l2_streamparm *p = arg; 2181 int ret = check_fmt(file, p->type); 2182 2183 if (ret) 2184 return ret; 2185 2186 /* Note: extendedmode is never used in drivers */ 2187 if (V4L2_TYPE_IS_OUTPUT(p->type)) { 2188 memset(p->parm.output.reserved, 0, 2189 sizeof(p->parm.output.reserved)); 2190 p->parm.output.extendedmode = 0; 2191 p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY; 2192 } else { 2193 memset(p->parm.capture.reserved, 0, 2194 sizeof(p->parm.capture.reserved)); 2195 p->parm.capture.extendedmode = 0; 2196 p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY; 2197 } 2198 return ops->vidioc_s_parm(file, fh, p); 2199 } 2200 2201 static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops, 2202 struct file *file, void *fh, void *arg) 2203 { 2204 struct video_device *vfd = video_devdata(file); 2205 struct v4l2_queryctrl *p = arg; 2206 struct v4l2_fh *vfh = 2207 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2208 2209 if (vfh && vfh->ctrl_handler) 2210 return v4l2_queryctrl(vfh->ctrl_handler, p); 2211 if (vfd->ctrl_handler) 2212 return v4l2_queryctrl(vfd->ctrl_handler, p); 2213 if (ops->vidioc_queryctrl) 2214 return ops->vidioc_queryctrl(file, fh, p); 2215 return -ENOTTY; 2216 } 2217 2218 static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops, 2219 struct file *file, void *fh, void *arg) 2220 { 2221 struct video_device *vfd = video_devdata(file); 2222 struct v4l2_query_ext_ctrl *p = arg; 2223 struct v4l2_fh *vfh = 2224 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2225 2226 if (vfh && vfh->ctrl_handler) 2227 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p); 2228 if (vfd->ctrl_handler) 2229 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p); 2230 if (ops->vidioc_query_ext_ctrl) 2231 return ops->vidioc_query_ext_ctrl(file, fh, p); 2232 return -ENOTTY; 2233 } 2234 2235 static int v4l_querymenu(const struct v4l2_ioctl_ops *ops, 2236 struct file *file, void *fh, void *arg) 2237 { 2238 struct video_device *vfd = video_devdata(file); 2239 struct v4l2_querymenu *p = arg; 2240 struct v4l2_fh *vfh = 2241 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2242 2243 if (vfh && vfh->ctrl_handler) 2244 return v4l2_querymenu(vfh->ctrl_handler, p); 2245 if (vfd->ctrl_handler) 2246 return v4l2_querymenu(vfd->ctrl_handler, p); 2247 if (ops->vidioc_querymenu) 2248 return ops->vidioc_querymenu(file, fh, p); 2249 return -ENOTTY; 2250 } 2251 2252 static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops, 2253 struct file *file, void *fh, void *arg) 2254 { 2255 struct video_device *vfd = video_devdata(file); 2256 struct v4l2_control *p = arg; 2257 struct v4l2_fh *vfh = 2258 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2259 struct v4l2_ext_controls ctrls; 2260 struct v4l2_ext_control ctrl; 2261 2262 if (vfh && vfh->ctrl_handler) 2263 return v4l2_g_ctrl(vfh->ctrl_handler, p); 2264 if (vfd->ctrl_handler) 2265 return v4l2_g_ctrl(vfd->ctrl_handler, p); 2266 if (ops->vidioc_g_ctrl) 2267 return ops->vidioc_g_ctrl(file, fh, p); 2268 if (ops->vidioc_g_ext_ctrls == NULL) 2269 return -ENOTTY; 2270 2271 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2272 ctrls.count = 1; 2273 ctrls.controls = &ctrl; 2274 ctrl.id = p->id; 2275 ctrl.value = p->value; 2276 if (check_ext_ctrls(&ctrls, VIDIOC_G_CTRL)) { 2277 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls); 2278 2279 if (ret == 0) 2280 p->value = ctrl.value; 2281 return ret; 2282 } 2283 return -EINVAL; 2284 } 2285 2286 static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, 2287 struct file *file, void *fh, void *arg) 2288 { 2289 struct video_device *vfd = video_devdata(file); 2290 struct v4l2_control *p = arg; 2291 struct v4l2_fh *vfh = 2292 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2293 struct v4l2_ext_controls ctrls; 2294 struct v4l2_ext_control ctrl; 2295 int ret; 2296 2297 if (vfh && vfh->ctrl_handler) 2298 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p); 2299 if (vfd->ctrl_handler) 2300 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p); 2301 if (ops->vidioc_s_ctrl) 2302 return ops->vidioc_s_ctrl(file, fh, p); 2303 if (ops->vidioc_s_ext_ctrls == NULL) 2304 return -ENOTTY; 2305 2306 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2307 ctrls.count = 1; 2308 ctrls.controls = &ctrl; 2309 ctrl.id = p->id; 2310 ctrl.value = p->value; 2311 if (!check_ext_ctrls(&ctrls, VIDIOC_S_CTRL)) 2312 return -EINVAL; 2313 ret = ops->vidioc_s_ext_ctrls(file, fh, &ctrls); 2314 p->value = ctrl.value; 2315 return ret; 2316 } 2317 2318 static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2319 struct file *file, void *fh, void *arg) 2320 { 2321 struct video_device *vfd = video_devdata(file); 2322 struct v4l2_ext_controls *p = arg; 2323 struct v4l2_fh *vfh = 2324 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2325 2326 p->error_idx = p->count; 2327 if (vfh && vfh->ctrl_handler) 2328 return v4l2_g_ext_ctrls(vfh->ctrl_handler, 2329 vfd, vfd->v4l2_dev->mdev, p); 2330 if (vfd->ctrl_handler) 2331 return v4l2_g_ext_ctrls(vfd->ctrl_handler, 2332 vfd, vfd->v4l2_dev->mdev, p); 2333 if (ops->vidioc_g_ext_ctrls == NULL) 2334 return -ENOTTY; 2335 return check_ext_ctrls(p, VIDIOC_G_EXT_CTRLS) ? 2336 ops->vidioc_g_ext_ctrls(file, fh, p) : -EINVAL; 2337 } 2338 2339 static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2340 struct file *file, void *fh, void *arg) 2341 { 2342 struct video_device *vfd = video_devdata(file); 2343 struct v4l2_ext_controls *p = arg; 2344 struct v4l2_fh *vfh = 2345 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2346 2347 p->error_idx = p->count; 2348 if (vfh && vfh->ctrl_handler) 2349 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, 2350 vfd, vfd->v4l2_dev->mdev, p); 2351 if (vfd->ctrl_handler) 2352 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, 2353 vfd, vfd->v4l2_dev->mdev, p); 2354 if (ops->vidioc_s_ext_ctrls == NULL) 2355 return -ENOTTY; 2356 return check_ext_ctrls(p, VIDIOC_S_EXT_CTRLS) ? 2357 ops->vidioc_s_ext_ctrls(file, fh, p) : -EINVAL; 2358 } 2359 2360 static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2361 struct file *file, void *fh, void *arg) 2362 { 2363 struct video_device *vfd = video_devdata(file); 2364 struct v4l2_ext_controls *p = arg; 2365 struct v4l2_fh *vfh = 2366 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2367 2368 p->error_idx = p->count; 2369 if (vfh && vfh->ctrl_handler) 2370 return v4l2_try_ext_ctrls(vfh->ctrl_handler, 2371 vfd, vfd->v4l2_dev->mdev, p); 2372 if (vfd->ctrl_handler) 2373 return v4l2_try_ext_ctrls(vfd->ctrl_handler, 2374 vfd, vfd->v4l2_dev->mdev, p); 2375 if (ops->vidioc_try_ext_ctrls == NULL) 2376 return -ENOTTY; 2377 return check_ext_ctrls(p, VIDIOC_TRY_EXT_CTRLS) ? 2378 ops->vidioc_try_ext_ctrls(file, fh, p) : -EINVAL; 2379 } 2380 2381 /* 2382 * The selection API specified originally that the _MPLANE buffer types 2383 * shouldn't be used. The reasons for this are lost in the mists of time 2384 * (or just really crappy memories). Regardless, this is really annoying 2385 * for userspace. So to keep things simple we map _MPLANE buffer types 2386 * to their 'regular' counterparts before calling the driver. And we 2387 * restore it afterwards. This way applications can use either buffer 2388 * type and drivers don't need to check for both. 2389 */ 2390 static int v4l_g_selection(const struct v4l2_ioctl_ops *ops, 2391 struct file *file, void *fh, void *arg) 2392 { 2393 struct v4l2_selection *p = arg; 2394 u32 old_type = p->type; 2395 int ret; 2396 2397 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2398 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2399 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2400 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2401 ret = ops->vidioc_g_selection(file, fh, p); 2402 p->type = old_type; 2403 return ret; 2404 } 2405 2406 static int v4l_s_selection(const struct v4l2_ioctl_ops *ops, 2407 struct file *file, void *fh, void *arg) 2408 { 2409 struct v4l2_selection *p = arg; 2410 u32 old_type = p->type; 2411 int ret; 2412 2413 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2414 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2415 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2416 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2417 ret = ops->vidioc_s_selection(file, fh, p); 2418 p->type = old_type; 2419 return ret; 2420 } 2421 2422 static int v4l_g_crop(const struct v4l2_ioctl_ops *ops, 2423 struct file *file, void *fh, void *arg) 2424 { 2425 struct video_device *vfd = video_devdata(file); 2426 struct v4l2_crop *p = arg; 2427 struct v4l2_selection s = { 2428 .type = p->type, 2429 }; 2430 int ret; 2431 2432 /* simulate capture crop using selection api */ 2433 2434 /* crop means compose for output devices */ 2435 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2436 s.target = V4L2_SEL_TGT_COMPOSE; 2437 else 2438 s.target = V4L2_SEL_TGT_CROP; 2439 2440 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2441 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2442 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2443 2444 ret = v4l_g_selection(ops, file, fh, &s); 2445 2446 /* copying results to old structure on success */ 2447 if (!ret) 2448 p->c = s.r; 2449 return ret; 2450 } 2451 2452 static int v4l_s_crop(const struct v4l2_ioctl_ops *ops, 2453 struct file *file, void *fh, void *arg) 2454 { 2455 struct video_device *vfd = video_devdata(file); 2456 struct v4l2_crop *p = arg; 2457 struct v4l2_selection s = { 2458 .type = p->type, 2459 .r = p->c, 2460 }; 2461 2462 /* simulate capture crop using selection api */ 2463 2464 /* crop means compose for output devices */ 2465 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2466 s.target = V4L2_SEL_TGT_COMPOSE; 2467 else 2468 s.target = V4L2_SEL_TGT_CROP; 2469 2470 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2471 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2472 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2473 2474 return v4l_s_selection(ops, file, fh, &s); 2475 } 2476 2477 static int v4l_cropcap(const struct v4l2_ioctl_ops *ops, 2478 struct file *file, void *fh, void *arg) 2479 { 2480 struct video_device *vfd = video_devdata(file); 2481 struct v4l2_cropcap *p = arg; 2482 struct v4l2_selection s = { .type = p->type }; 2483 int ret = 0; 2484 2485 /* setting trivial pixelaspect */ 2486 p->pixelaspect.numerator = 1; 2487 p->pixelaspect.denominator = 1; 2488 2489 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2490 s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2491 else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2492 s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2493 2494 /* 2495 * The determine_valid_ioctls() call already should ensure 2496 * that this can never happen, but just in case... 2497 */ 2498 if (WARN_ON(!ops->vidioc_g_selection)) 2499 return -ENOTTY; 2500 2501 if (ops->vidioc_g_pixelaspect) 2502 ret = ops->vidioc_g_pixelaspect(file, fh, s.type, 2503 &p->pixelaspect); 2504 2505 /* 2506 * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the 2507 * square pixel aspect ratio in that case. 2508 */ 2509 if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD) 2510 return ret; 2511 2512 /* Use g_selection() to fill in the bounds and defrect rectangles */ 2513 2514 /* obtaining bounds */ 2515 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2516 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS; 2517 else 2518 s.target = V4L2_SEL_TGT_CROP_BOUNDS; 2519 2520 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2521 s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ? 2522 V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS; 2523 2524 ret = v4l_g_selection(ops, file, fh, &s); 2525 if (ret) 2526 return ret; 2527 p->bounds = s.r; 2528 2529 /* obtaining defrect */ 2530 if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS) 2531 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT; 2532 else 2533 s.target = V4L2_SEL_TGT_CROP_DEFAULT; 2534 2535 ret = v4l_g_selection(ops, file, fh, &s); 2536 if (ret) 2537 return ret; 2538 p->defrect = s.r; 2539 2540 return 0; 2541 } 2542 2543 static int v4l_log_status(const struct v4l2_ioctl_ops *ops, 2544 struct file *file, void *fh, void *arg) 2545 { 2546 struct video_device *vfd = video_devdata(file); 2547 int ret; 2548 2549 if (vfd->v4l2_dev) 2550 pr_info("%s: ================= START STATUS =================\n", 2551 vfd->v4l2_dev->name); 2552 ret = ops->vidioc_log_status(file, fh); 2553 if (vfd->v4l2_dev) 2554 pr_info("%s: ================== END STATUS ==================\n", 2555 vfd->v4l2_dev->name); 2556 return ret; 2557 } 2558 2559 static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops, 2560 struct file *file, void *fh, void *arg) 2561 { 2562 #ifdef CONFIG_VIDEO_ADV_DEBUG 2563 struct v4l2_dbg_register *p = arg; 2564 struct video_device *vfd = video_devdata(file); 2565 struct v4l2_subdev *sd; 2566 int idx = 0; 2567 2568 if (!capable(CAP_SYS_ADMIN)) 2569 return -EPERM; 2570 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2571 if (vfd->v4l2_dev == NULL) 2572 return -EINVAL; 2573 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2574 if (p->match.addr == idx++) 2575 return v4l2_subdev_call(sd, core, g_register, p); 2576 return -EINVAL; 2577 } 2578 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2579 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2580 return ops->vidioc_g_register(file, fh, p); 2581 return -EINVAL; 2582 #else 2583 return -ENOTTY; 2584 #endif 2585 } 2586 2587 static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops, 2588 struct file *file, void *fh, void *arg) 2589 { 2590 #ifdef CONFIG_VIDEO_ADV_DEBUG 2591 const struct v4l2_dbg_register *p = arg; 2592 struct video_device *vfd = video_devdata(file); 2593 struct v4l2_subdev *sd; 2594 int idx = 0; 2595 2596 if (!capable(CAP_SYS_ADMIN)) 2597 return -EPERM; 2598 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2599 if (vfd->v4l2_dev == NULL) 2600 return -EINVAL; 2601 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2602 if (p->match.addr == idx++) 2603 return v4l2_subdev_call(sd, core, s_register, p); 2604 return -EINVAL; 2605 } 2606 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2607 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2608 return ops->vidioc_s_register(file, fh, p); 2609 return -EINVAL; 2610 #else 2611 return -ENOTTY; 2612 #endif 2613 } 2614 2615 static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops, 2616 struct file *file, void *fh, void *arg) 2617 { 2618 #ifdef CONFIG_VIDEO_ADV_DEBUG 2619 struct video_device *vfd = video_devdata(file); 2620 struct v4l2_dbg_chip_info *p = arg; 2621 struct v4l2_subdev *sd; 2622 int idx = 0; 2623 2624 switch (p->match.type) { 2625 case V4L2_CHIP_MATCH_BRIDGE: 2626 if (ops->vidioc_s_register) 2627 p->flags |= V4L2_CHIP_FL_WRITABLE; 2628 if (ops->vidioc_g_register) 2629 p->flags |= V4L2_CHIP_FL_READABLE; 2630 strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name)); 2631 if (ops->vidioc_g_chip_info) 2632 return ops->vidioc_g_chip_info(file, fh, arg); 2633 if (p->match.addr) 2634 return -EINVAL; 2635 return 0; 2636 2637 case V4L2_CHIP_MATCH_SUBDEV: 2638 if (vfd->v4l2_dev == NULL) 2639 break; 2640 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) { 2641 if (p->match.addr != idx++) 2642 continue; 2643 if (sd->ops->core && sd->ops->core->s_register) 2644 p->flags |= V4L2_CHIP_FL_WRITABLE; 2645 if (sd->ops->core && sd->ops->core->g_register) 2646 p->flags |= V4L2_CHIP_FL_READABLE; 2647 strscpy(p->name, sd->name, sizeof(p->name)); 2648 return 0; 2649 } 2650 break; 2651 } 2652 return -EINVAL; 2653 #else 2654 return -ENOTTY; 2655 #endif 2656 } 2657 2658 static int v4l_dqevent(const struct v4l2_ioctl_ops *ops, 2659 struct file *file, void *fh, void *arg) 2660 { 2661 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK); 2662 } 2663 2664 static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops, 2665 struct file *file, void *fh, void *arg) 2666 { 2667 return ops->vidioc_subscribe_event(fh, arg); 2668 } 2669 2670 static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops, 2671 struct file *file, void *fh, void *arg) 2672 { 2673 return ops->vidioc_unsubscribe_event(fh, arg); 2674 } 2675 2676 static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops, 2677 struct file *file, void *fh, void *arg) 2678 { 2679 struct v4l2_sliced_vbi_cap *p = arg; 2680 int ret = check_fmt(file, p->type); 2681 2682 if (ret) 2683 return ret; 2684 2685 /* Clear up to type, everything after type is zeroed already */ 2686 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type)); 2687 2688 return ops->vidioc_g_sliced_vbi_cap(file, fh, p); 2689 } 2690 2691 static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops, 2692 struct file *file, void *fh, void *arg) 2693 { 2694 struct video_device *vfd = video_devdata(file); 2695 struct v4l2_frequency_band *p = arg; 2696 enum v4l2_tuner_type type; 2697 int err; 2698 2699 if (vfd->vfl_type == VFL_TYPE_SDR) { 2700 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 2701 return -EINVAL; 2702 type = p->type; 2703 } else { 2704 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2705 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2706 if (type != p->type) 2707 return -EINVAL; 2708 } 2709 if (ops->vidioc_enum_freq_bands) { 2710 err = ops->vidioc_enum_freq_bands(file, fh, p); 2711 if (err != -ENOTTY) 2712 return err; 2713 } 2714 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) { 2715 struct v4l2_tuner t = { 2716 .index = p->tuner, 2717 .type = type, 2718 }; 2719 2720 if (p->index) 2721 return -EINVAL; 2722 err = ops->vidioc_g_tuner(file, fh, &t); 2723 if (err) 2724 return err; 2725 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2726 p->rangelow = t.rangelow; 2727 p->rangehigh = t.rangehigh; 2728 p->modulation = (type == V4L2_TUNER_RADIO) ? 2729 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2730 return 0; 2731 } 2732 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) { 2733 struct v4l2_modulator m = { 2734 .index = p->tuner, 2735 }; 2736 2737 if (type != V4L2_TUNER_RADIO) 2738 return -EINVAL; 2739 if (p->index) 2740 return -EINVAL; 2741 err = ops->vidioc_g_modulator(file, fh, &m); 2742 if (err) 2743 return err; 2744 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2745 p->rangelow = m.rangelow; 2746 p->rangehigh = m.rangehigh; 2747 p->modulation = (type == V4L2_TUNER_RADIO) ? 2748 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2749 return 0; 2750 } 2751 return -ENOTTY; 2752 } 2753 2754 struct v4l2_ioctl_info { 2755 unsigned int ioctl; 2756 u32 flags; 2757 const char * const name; 2758 int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file, 2759 void *fh, void *p); 2760 void (*debug)(const void *arg, bool write_only); 2761 }; 2762 2763 /* This control needs a priority check */ 2764 #define INFO_FL_PRIO (1 << 0) 2765 /* This control can be valid if the filehandle passes a control handler. */ 2766 #define INFO_FL_CTRL (1 << 1) 2767 /* Queuing ioctl */ 2768 #define INFO_FL_QUEUE (1 << 2) 2769 /* Always copy back result, even on error */ 2770 #define INFO_FL_ALWAYS_COPY (1 << 3) 2771 /* Zero struct from after the field to the end */ 2772 #define INFO_FL_CLEAR(v4l2_struct, field) \ 2773 ((offsetof(struct v4l2_struct, field) + \ 2774 sizeof_field(struct v4l2_struct, field)) << 16) 2775 #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16) 2776 2777 #define DEFINE_V4L_STUB_FUNC(_vidioc) \ 2778 static int v4l_stub_ ## _vidioc( \ 2779 const struct v4l2_ioctl_ops *ops, \ 2780 struct file *file, void *fh, void *p) \ 2781 { \ 2782 return ops->vidioc_ ## _vidioc(file, fh, p); \ 2783 } 2784 2785 #define IOCTL_INFO(_ioctl, _func, _debug, _flags) \ 2786 [_IOC_NR(_ioctl)] = { \ 2787 .ioctl = _ioctl, \ 2788 .flags = _flags, \ 2789 .name = #_ioctl, \ 2790 .func = _func, \ 2791 .debug = _debug, \ 2792 } 2793 2794 DEFINE_V4L_STUB_FUNC(g_fbuf) 2795 DEFINE_V4L_STUB_FUNC(s_fbuf) 2796 DEFINE_V4L_STUB_FUNC(expbuf) 2797 DEFINE_V4L_STUB_FUNC(g_std) 2798 DEFINE_V4L_STUB_FUNC(g_audio) 2799 DEFINE_V4L_STUB_FUNC(s_audio) 2800 DEFINE_V4L_STUB_FUNC(g_edid) 2801 DEFINE_V4L_STUB_FUNC(s_edid) 2802 DEFINE_V4L_STUB_FUNC(g_audout) 2803 DEFINE_V4L_STUB_FUNC(s_audout) 2804 DEFINE_V4L_STUB_FUNC(g_jpegcomp) 2805 DEFINE_V4L_STUB_FUNC(s_jpegcomp) 2806 DEFINE_V4L_STUB_FUNC(enumaudio) 2807 DEFINE_V4L_STUB_FUNC(enumaudout) 2808 DEFINE_V4L_STUB_FUNC(enum_framesizes) 2809 DEFINE_V4L_STUB_FUNC(enum_frameintervals) 2810 DEFINE_V4L_STUB_FUNC(g_enc_index) 2811 DEFINE_V4L_STUB_FUNC(encoder_cmd) 2812 DEFINE_V4L_STUB_FUNC(try_encoder_cmd) 2813 DEFINE_V4L_STUB_FUNC(decoder_cmd) 2814 DEFINE_V4L_STUB_FUNC(try_decoder_cmd) 2815 DEFINE_V4L_STUB_FUNC(s_dv_timings) 2816 DEFINE_V4L_STUB_FUNC(g_dv_timings) 2817 DEFINE_V4L_STUB_FUNC(enum_dv_timings) 2818 DEFINE_V4L_STUB_FUNC(query_dv_timings) 2819 DEFINE_V4L_STUB_FUNC(dv_timings_cap) 2820 2821 static const struct v4l2_ioctl_info v4l2_ioctls[] = { 2822 IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0), 2823 IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, 0), 2824 IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0), 2825 IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO), 2826 IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2827 IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)), 2828 IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0), 2829 IOCTL_INFO(VIDIOC_S_FBUF, v4l_stub_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO), 2830 IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO), 2831 IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE), 2832 IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)), 2833 IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE), 2834 IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2835 IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2836 IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)), 2837 IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO), 2838 IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0), 2839 IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO), 2840 IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)), 2841 IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)), 2842 IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)), 2843 IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL), 2844 IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)), 2845 IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO), 2846 IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0), 2847 IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO), 2848 IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)), 2849 IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)), 2850 IOCTL_INFO(VIDIOC_G_INPUT, v4l_g_input, v4l_print_u32, 0), 2851 IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO), 2852 IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY), 2853 IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY), 2854 IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_g_output, v4l_print_u32, 0), 2855 IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO), 2856 IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)), 2857 IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0), 2858 IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO), 2859 IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)), 2860 IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO), 2861 IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)), 2862 IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO), 2863 IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)), 2864 IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)), 2865 IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO), 2866 IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)), 2867 IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)), 2868 IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0), 2869 IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO), 2870 IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0), 2871 IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0), 2872 IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)), 2873 IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)), 2874 IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0), 2875 IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO), 2876 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)), 2877 IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0), 2878 IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY), 2879 IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL | INFO_FL_ALWAYS_COPY), 2880 IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY), 2881 IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)), 2882 IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)), 2883 IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0), 2884 IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2885 IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2886 IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO), 2887 IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0), 2888 IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0), 2889 IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0), 2890 IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO), 2891 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)), 2892 IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0), 2893 IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0), 2894 IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0), 2895 IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0), 2896 IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2897 IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE), 2898 IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)), 2899 IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY), 2900 IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)), 2901 IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0), 2902 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)), 2903 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)), 2904 }; 2905 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) 2906 2907 static bool v4l2_is_known_ioctl(unsigned int cmd) 2908 { 2909 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2910 return false; 2911 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd; 2912 } 2913 2914 static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, 2915 struct v4l2_fh *vfh, unsigned int cmd, 2916 void *arg) 2917 { 2918 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2919 return vdev->lock; 2920 if (vfh && vfh->m2m_ctx && 2921 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) { 2922 if (vfh->m2m_ctx->q_lock) 2923 return vfh->m2m_ctx->q_lock; 2924 } 2925 if (vdev->queue && vdev->queue->lock && 2926 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) 2927 return vdev->queue->lock; 2928 return vdev->lock; 2929 } 2930 2931 /* Common ioctl debug function. This function can be used by 2932 external ioctl messages as well as internal V4L ioctl */ 2933 void v4l_printk_ioctl(const char *prefix, unsigned int cmd) 2934 { 2935 const char *dir, *type; 2936 2937 if (prefix) 2938 printk(KERN_DEBUG "%s: ", prefix); 2939 2940 switch (_IOC_TYPE(cmd)) { 2941 case 'd': 2942 type = "v4l2_int"; 2943 break; 2944 case 'V': 2945 if (_IOC_NR(cmd) >= V4L2_IOCTLS) { 2946 type = "v4l2"; 2947 break; 2948 } 2949 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name); 2950 return; 2951 default: 2952 type = "unknown"; 2953 break; 2954 } 2955 2956 switch (_IOC_DIR(cmd)) { 2957 case _IOC_NONE: dir = "--"; break; 2958 case _IOC_READ: dir = "r-"; break; 2959 case _IOC_WRITE: dir = "-w"; break; 2960 case _IOC_READ | _IOC_WRITE: dir = "rw"; break; 2961 default: dir = "*ERR*"; break; 2962 } 2963 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)", 2964 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd); 2965 } 2966 EXPORT_SYMBOL(v4l_printk_ioctl); 2967 2968 static long __video_do_ioctl(struct file *file, 2969 unsigned int cmd, void *arg) 2970 { 2971 struct video_device *vfd = video_devdata(file); 2972 struct mutex *req_queue_lock = NULL; 2973 struct mutex *lock; /* ioctl serialization mutex */ 2974 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 2975 bool write_only = false; 2976 struct v4l2_ioctl_info default_info; 2977 const struct v4l2_ioctl_info *info; 2978 void *fh = file->private_data; 2979 struct v4l2_fh *vfh = NULL; 2980 int dev_debug = vfd->dev_debug; 2981 long ret = -ENOTTY; 2982 2983 if (ops == NULL) { 2984 pr_warn("%s: has no ioctl_ops.\n", 2985 video_device_node_name(vfd)); 2986 return ret; 2987 } 2988 2989 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 2990 vfh = file->private_data; 2991 2992 /* 2993 * We need to serialize streamon/off with queueing new requests. 2994 * These ioctls may trigger the cancellation of a streaming 2995 * operation, and that should not be mixed with queueing a new 2996 * request at the same time. 2997 */ 2998 if (v4l2_device_supports_requests(vfd->v4l2_dev) && 2999 (cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF)) { 3000 req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex; 3001 3002 if (mutex_lock_interruptible(req_queue_lock)) 3003 return -ERESTARTSYS; 3004 } 3005 3006 lock = v4l2_ioctl_get_lock(vfd, vfh, cmd, arg); 3007 3008 if (lock && mutex_lock_interruptible(lock)) { 3009 if (req_queue_lock) 3010 mutex_unlock(req_queue_lock); 3011 return -ERESTARTSYS; 3012 } 3013 3014 if (!video_is_registered(vfd)) { 3015 ret = -ENODEV; 3016 goto unlock; 3017 } 3018 3019 if (v4l2_is_known_ioctl(cmd)) { 3020 info = &v4l2_ioctls[_IOC_NR(cmd)]; 3021 3022 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) && 3023 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler)) 3024 goto done; 3025 3026 if (vfh && (info->flags & INFO_FL_PRIO)) { 3027 ret = v4l2_prio_check(vfd->prio, vfh->prio); 3028 if (ret) 3029 goto done; 3030 } 3031 } else { 3032 default_info.ioctl = cmd; 3033 default_info.flags = 0; 3034 default_info.debug = v4l_print_default; 3035 info = &default_info; 3036 } 3037 3038 write_only = _IOC_DIR(cmd) == _IOC_WRITE; 3039 if (info != &default_info) { 3040 ret = info->func(ops, file, fh, arg); 3041 } else if (!ops->vidioc_default) { 3042 ret = -ENOTTY; 3043 } else { 3044 ret = ops->vidioc_default(file, fh, 3045 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0, 3046 cmd, arg); 3047 } 3048 3049 done: 3050 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) { 3051 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) && 3052 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF)) 3053 goto unlock; 3054 3055 v4l_printk_ioctl(video_device_node_name(vfd), cmd); 3056 if (ret < 0) 3057 pr_cont(": error %ld", ret); 3058 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG)) 3059 pr_cont("\n"); 3060 else if (_IOC_DIR(cmd) == _IOC_NONE) 3061 info->debug(arg, write_only); 3062 else { 3063 pr_cont(": "); 3064 info->debug(arg, write_only); 3065 } 3066 } 3067 3068 unlock: 3069 if (lock) 3070 mutex_unlock(lock); 3071 if (req_queue_lock) 3072 mutex_unlock(req_queue_lock); 3073 return ret; 3074 } 3075 3076 static int check_array_args(unsigned int cmd, void *parg, size_t *array_size, 3077 void __user **user_ptr, void ***kernel_ptr) 3078 { 3079 int ret = 0; 3080 3081 switch (cmd) { 3082 case VIDIOC_PREPARE_BUF: 3083 case VIDIOC_QUERYBUF: 3084 case VIDIOC_QBUF: 3085 case VIDIOC_DQBUF: { 3086 struct v4l2_buffer *buf = parg; 3087 3088 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) { 3089 if (buf->length > VIDEO_MAX_PLANES) { 3090 ret = -EINVAL; 3091 break; 3092 } 3093 *user_ptr = (void __user *)buf->m.planes; 3094 *kernel_ptr = (void **)&buf->m.planes; 3095 *array_size = sizeof(struct v4l2_plane) * buf->length; 3096 ret = 1; 3097 } 3098 break; 3099 } 3100 3101 case VIDIOC_G_EDID: 3102 case VIDIOC_S_EDID: { 3103 struct v4l2_edid *edid = parg; 3104 3105 if (edid->blocks) { 3106 if (edid->blocks > 256) { 3107 ret = -EINVAL; 3108 break; 3109 } 3110 *user_ptr = (void __user *)edid->edid; 3111 *kernel_ptr = (void **)&edid->edid; 3112 *array_size = edid->blocks * 128; 3113 ret = 1; 3114 } 3115 break; 3116 } 3117 3118 case VIDIOC_S_EXT_CTRLS: 3119 case VIDIOC_G_EXT_CTRLS: 3120 case VIDIOC_TRY_EXT_CTRLS: { 3121 struct v4l2_ext_controls *ctrls = parg; 3122 3123 if (ctrls->count != 0) { 3124 if (ctrls->count > V4L2_CID_MAX_CTRLS) { 3125 ret = -EINVAL; 3126 break; 3127 } 3128 *user_ptr = (void __user *)ctrls->controls; 3129 *kernel_ptr = (void **)&ctrls->controls; 3130 *array_size = sizeof(struct v4l2_ext_control) 3131 * ctrls->count; 3132 ret = 1; 3133 } 3134 break; 3135 } 3136 case VIDIOC_G_FMT: 3137 case VIDIOC_S_FMT: 3138 case VIDIOC_TRY_FMT: { 3139 struct v4l2_format *fmt = parg; 3140 3141 if (fmt->type != V4L2_BUF_TYPE_VIDEO_OVERLAY && 3142 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY) 3143 break; 3144 if (fmt->fmt.win.clipcount > 2048) 3145 return -EINVAL; 3146 if (!fmt->fmt.win.clipcount) 3147 break; 3148 3149 *user_ptr = (void __user *)fmt->fmt.win.clips; 3150 *kernel_ptr = (void **)&fmt->fmt.win.clips; 3151 *array_size = sizeof(struct v4l2_clip) 3152 * fmt->fmt.win.clipcount; 3153 3154 ret = 1; 3155 break; 3156 } 3157 } 3158 3159 return ret; 3160 } 3161 3162 static unsigned int video_translate_cmd(unsigned int cmd) 3163 { 3164 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3165 switch (cmd) { 3166 case VIDIOC_DQEVENT_TIME32: 3167 return VIDIOC_DQEVENT; 3168 case VIDIOC_QUERYBUF_TIME32: 3169 return VIDIOC_QUERYBUF; 3170 case VIDIOC_QBUF_TIME32: 3171 return VIDIOC_QBUF; 3172 case VIDIOC_DQBUF_TIME32: 3173 return VIDIOC_DQBUF; 3174 case VIDIOC_PREPARE_BUF_TIME32: 3175 return VIDIOC_PREPARE_BUF; 3176 } 3177 #endif 3178 if (in_compat_syscall()) 3179 return v4l2_compat_translate_cmd(cmd); 3180 3181 return cmd; 3182 } 3183 3184 static int video_get_user(void __user *arg, void *parg, 3185 unsigned int real_cmd, unsigned int cmd, 3186 bool *always_copy) 3187 { 3188 unsigned int n = _IOC_SIZE(real_cmd); 3189 int err = 0; 3190 3191 if (!(_IOC_DIR(cmd) & _IOC_WRITE)) { 3192 /* read-only ioctl */ 3193 memset(parg, 0, n); 3194 return 0; 3195 } 3196 3197 /* 3198 * In some cases, only a few fields are used as input, 3199 * i.e. when the app sets "index" and then the driver 3200 * fills in the rest of the structure for the thing 3201 * with that index. We only need to copy up the first 3202 * non-input field. 3203 */ 3204 if (v4l2_is_known_ioctl(real_cmd)) { 3205 u32 flags = v4l2_ioctls[_IOC_NR(real_cmd)].flags; 3206 3207 if (flags & INFO_FL_CLEAR_MASK) 3208 n = (flags & INFO_FL_CLEAR_MASK) >> 16; 3209 *always_copy = flags & INFO_FL_ALWAYS_COPY; 3210 } 3211 3212 if (cmd == real_cmd) { 3213 if (copy_from_user(parg, (void __user *)arg, n)) 3214 err = -EFAULT; 3215 } else if (in_compat_syscall()) { 3216 memset(parg, 0, n); 3217 err = v4l2_compat_get_user(arg, parg, cmd); 3218 } else { 3219 memset(parg, 0, n); 3220 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3221 switch (cmd) { 3222 case VIDIOC_QUERYBUF_TIME32: 3223 case VIDIOC_QBUF_TIME32: 3224 case VIDIOC_DQBUF_TIME32: 3225 case VIDIOC_PREPARE_BUF_TIME32: { 3226 struct v4l2_buffer_time32 vb32; 3227 struct v4l2_buffer *vb = parg; 3228 3229 if (copy_from_user(&vb32, arg, sizeof(vb32))) 3230 return -EFAULT; 3231 3232 *vb = (struct v4l2_buffer) { 3233 .index = vb32.index, 3234 .type = vb32.type, 3235 .bytesused = vb32.bytesused, 3236 .flags = vb32.flags, 3237 .field = vb32.field, 3238 .timestamp.tv_sec = vb32.timestamp.tv_sec, 3239 .timestamp.tv_usec = vb32.timestamp.tv_usec, 3240 .timecode = vb32.timecode, 3241 .sequence = vb32.sequence, 3242 .memory = vb32.memory, 3243 .m.userptr = vb32.m.userptr, 3244 .length = vb32.length, 3245 .request_fd = vb32.request_fd, 3246 }; 3247 break; 3248 } 3249 } 3250 #endif 3251 } 3252 3253 /* zero out anything we don't copy from userspace */ 3254 if (!err && n < _IOC_SIZE(real_cmd)) 3255 memset((u8 *)parg + n, 0, _IOC_SIZE(real_cmd) - n); 3256 return err; 3257 } 3258 3259 static int video_put_user(void __user *arg, void *parg, 3260 unsigned int real_cmd, unsigned int cmd) 3261 { 3262 if (!(_IOC_DIR(cmd) & _IOC_READ)) 3263 return 0; 3264 3265 if (cmd == real_cmd) { 3266 /* Copy results into user buffer */ 3267 if (copy_to_user(arg, parg, _IOC_SIZE(cmd))) 3268 return -EFAULT; 3269 return 0; 3270 } 3271 3272 if (in_compat_syscall()) 3273 return v4l2_compat_put_user(arg, parg, cmd); 3274 3275 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3276 switch (cmd) { 3277 case VIDIOC_DQEVENT_TIME32: { 3278 struct v4l2_event *ev = parg; 3279 struct v4l2_event_time32 ev32; 3280 3281 memset(&ev32, 0, sizeof(ev32)); 3282 3283 ev32.type = ev->type; 3284 ev32.pending = ev->pending; 3285 ev32.sequence = ev->sequence; 3286 ev32.timestamp.tv_sec = ev->timestamp.tv_sec; 3287 ev32.timestamp.tv_nsec = ev->timestamp.tv_nsec; 3288 ev32.id = ev->id; 3289 3290 memcpy(&ev32.u, &ev->u, sizeof(ev->u)); 3291 memcpy(&ev32.reserved, &ev->reserved, sizeof(ev->reserved)); 3292 3293 if (copy_to_user(arg, &ev32, sizeof(ev32))) 3294 return -EFAULT; 3295 break; 3296 } 3297 case VIDIOC_QUERYBUF_TIME32: 3298 case VIDIOC_QBUF_TIME32: 3299 case VIDIOC_DQBUF_TIME32: 3300 case VIDIOC_PREPARE_BUF_TIME32: { 3301 struct v4l2_buffer *vb = parg; 3302 struct v4l2_buffer_time32 vb32; 3303 3304 memset(&vb32, 0, sizeof(vb32)); 3305 3306 vb32.index = vb->index; 3307 vb32.type = vb->type; 3308 vb32.bytesused = vb->bytesused; 3309 vb32.flags = vb->flags; 3310 vb32.field = vb->field; 3311 vb32.timestamp.tv_sec = vb->timestamp.tv_sec; 3312 vb32.timestamp.tv_usec = vb->timestamp.tv_usec; 3313 vb32.timecode = vb->timecode; 3314 vb32.sequence = vb->sequence; 3315 vb32.memory = vb->memory; 3316 vb32.m.userptr = vb->m.userptr; 3317 vb32.length = vb->length; 3318 vb32.request_fd = vb->request_fd; 3319 3320 if (copy_to_user(arg, &vb32, sizeof(vb32))) 3321 return -EFAULT; 3322 break; 3323 } 3324 } 3325 #endif 3326 3327 return 0; 3328 } 3329 3330 long 3331 video_usercopy(struct file *file, unsigned int orig_cmd, unsigned long arg, 3332 v4l2_kioctl func) 3333 { 3334 char sbuf[128]; 3335 void *mbuf = NULL, *array_buf = NULL; 3336 void *parg = (void *)arg; 3337 long err = -EINVAL; 3338 bool has_array_args; 3339 bool always_copy = false; 3340 size_t array_size = 0; 3341 void __user *user_ptr = NULL; 3342 void **kernel_ptr = NULL; 3343 unsigned int cmd = video_translate_cmd(orig_cmd); 3344 const size_t ioc_size = _IOC_SIZE(cmd); 3345 3346 /* Copy arguments into temp kernel buffer */ 3347 if (_IOC_DIR(cmd) != _IOC_NONE) { 3348 if (ioc_size <= sizeof(sbuf)) { 3349 parg = sbuf; 3350 } else { 3351 /* too big to allocate from stack */ 3352 mbuf = kmalloc(ioc_size, GFP_KERNEL); 3353 if (NULL == mbuf) 3354 return -ENOMEM; 3355 parg = mbuf; 3356 } 3357 3358 err = video_get_user((void __user *)arg, parg, cmd, 3359 orig_cmd, &always_copy); 3360 if (err) 3361 goto out; 3362 } 3363 3364 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr); 3365 if (err < 0) 3366 goto out; 3367 has_array_args = err; 3368 3369 if (has_array_args) { 3370 array_buf = kvmalloc(array_size, GFP_KERNEL); 3371 err = -ENOMEM; 3372 if (array_buf == NULL) 3373 goto out; 3374 if (in_compat_syscall()) 3375 err = v4l2_compat_get_array_args(file, array_buf, 3376 user_ptr, array_size, 3377 orig_cmd, parg); 3378 else 3379 err = copy_from_user(array_buf, user_ptr, array_size) ? 3380 -EFAULT : 0; 3381 if (err) 3382 goto out; 3383 *kernel_ptr = array_buf; 3384 } 3385 3386 /* Handles IOCTL */ 3387 err = func(file, cmd, parg); 3388 if (err == -ENOTTY || err == -ENOIOCTLCMD) { 3389 err = -ENOTTY; 3390 goto out; 3391 } 3392 3393 if (err == 0) { 3394 if (cmd == VIDIOC_DQBUF) 3395 trace_v4l2_dqbuf(video_devdata(file)->minor, parg); 3396 else if (cmd == VIDIOC_QBUF) 3397 trace_v4l2_qbuf(video_devdata(file)->minor, parg); 3398 } 3399 3400 /* 3401 * Some ioctls can return an error, but still have valid 3402 * results that must be returned. 3403 */ 3404 if (err < 0 && !always_copy) 3405 goto out; 3406 3407 if (has_array_args) { 3408 *kernel_ptr = (void __force *)user_ptr; 3409 if (in_compat_syscall()) { 3410 int put_err; 3411 3412 put_err = v4l2_compat_put_array_args(file, user_ptr, 3413 array_buf, 3414 array_size, 3415 orig_cmd, parg); 3416 if (put_err) 3417 err = put_err; 3418 } else if (copy_to_user(user_ptr, array_buf, array_size)) { 3419 err = -EFAULT; 3420 } 3421 } 3422 3423 if (video_put_user((void __user *)arg, parg, cmd, orig_cmd)) 3424 err = -EFAULT; 3425 out: 3426 kvfree(array_buf); 3427 kfree(mbuf); 3428 return err; 3429 } 3430 3431 long video_ioctl2(struct file *file, 3432 unsigned int cmd, unsigned long arg) 3433 { 3434 return video_usercopy(file, cmd, arg, __video_do_ioctl); 3435 } 3436 EXPORT_SYMBOL(video_ioctl2); 3437