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/v4l2-common.h> 22 #include <media/v4l2-ioctl.h> 23 #include <media/v4l2-ctrls.h> 24 #include <media/v4l2-fh.h> 25 #include <media/v4l2-event.h> 26 #include <media/v4l2-device.h> 27 #include <media/videobuf2-v4l2.h> 28 #include <media/v4l2-mc.h> 29 #include <media/v4l2-mem2mem.h> 30 31 #include <trace/events/v4l2.h> 32 33 /* Zero out the end of the struct pointed to by p. Everything after, but 34 * not including, the specified field is cleared. */ 35 #define CLEAR_AFTER_FIELD(p, field) \ 36 memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \ 37 0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field)) 38 39 #define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls) 40 41 struct std_descr { 42 v4l2_std_id std; 43 const char *descr; 44 }; 45 46 static const struct std_descr standards[] = { 47 { V4L2_STD_NTSC, "NTSC" }, 48 { V4L2_STD_NTSC_M, "NTSC-M" }, 49 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" }, 50 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" }, 51 { V4L2_STD_NTSC_443, "NTSC-443" }, 52 { V4L2_STD_PAL, "PAL" }, 53 { V4L2_STD_PAL_BG, "PAL-BG" }, 54 { V4L2_STD_PAL_B, "PAL-B" }, 55 { V4L2_STD_PAL_B1, "PAL-B1" }, 56 { V4L2_STD_PAL_G, "PAL-G" }, 57 { V4L2_STD_PAL_H, "PAL-H" }, 58 { V4L2_STD_PAL_I, "PAL-I" }, 59 { V4L2_STD_PAL_DK, "PAL-DK" }, 60 { V4L2_STD_PAL_D, "PAL-D" }, 61 { V4L2_STD_PAL_D1, "PAL-D1" }, 62 { V4L2_STD_PAL_K, "PAL-K" }, 63 { V4L2_STD_PAL_M, "PAL-M" }, 64 { V4L2_STD_PAL_N, "PAL-N" }, 65 { V4L2_STD_PAL_Nc, "PAL-Nc" }, 66 { V4L2_STD_PAL_60, "PAL-60" }, 67 { V4L2_STD_SECAM, "SECAM" }, 68 { V4L2_STD_SECAM_B, "SECAM-B" }, 69 { V4L2_STD_SECAM_G, "SECAM-G" }, 70 { V4L2_STD_SECAM_H, "SECAM-H" }, 71 { V4L2_STD_SECAM_DK, "SECAM-DK" }, 72 { V4L2_STD_SECAM_D, "SECAM-D" }, 73 { V4L2_STD_SECAM_K, "SECAM-K" }, 74 { V4L2_STD_SECAM_K1, "SECAM-K1" }, 75 { V4L2_STD_SECAM_L, "SECAM-L" }, 76 { V4L2_STD_SECAM_LC, "SECAM-Lc" }, 77 { 0, "Unknown" } 78 }; 79 80 /* video4linux standard ID conversion to standard name 81 */ 82 const char *v4l2_norm_to_name(v4l2_std_id id) 83 { 84 u32 myid = id; 85 int i; 86 87 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle 88 64 bit comparisons. So, on that architecture, with some gcc 89 variants, compilation fails. Currently, the max value is 30bit wide. 90 */ 91 BUG_ON(myid != id); 92 93 for (i = 0; standards[i].std; i++) 94 if (myid == standards[i].std) 95 break; 96 return standards[i].descr; 97 } 98 EXPORT_SYMBOL(v4l2_norm_to_name); 99 100 /* Returns frame period for the given standard */ 101 void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod) 102 { 103 if (id & V4L2_STD_525_60) { 104 frameperiod->numerator = 1001; 105 frameperiod->denominator = 30000; 106 } else { 107 frameperiod->numerator = 1; 108 frameperiod->denominator = 25; 109 } 110 } 111 EXPORT_SYMBOL(v4l2_video_std_frame_period); 112 113 /* Fill in the fields of a v4l2_standard structure according to the 114 'id' and 'transmission' parameters. Returns negative on error. */ 115 int v4l2_video_std_construct(struct v4l2_standard *vs, 116 int id, const char *name) 117 { 118 vs->id = id; 119 v4l2_video_std_frame_period(id, &vs->frameperiod); 120 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625; 121 strscpy(vs->name, name, sizeof(vs->name)); 122 return 0; 123 } 124 EXPORT_SYMBOL(v4l2_video_std_construct); 125 126 /* Fill in the fields of a v4l2_standard structure according to the 127 * 'id' and 'vs->index' parameters. Returns negative on error. */ 128 int v4l_video_std_enumstd(struct v4l2_standard *vs, v4l2_std_id id) 129 { 130 v4l2_std_id curr_id = 0; 131 unsigned int index = vs->index, i, j = 0; 132 const char *descr = ""; 133 134 /* Return -ENODATA if the id for the current input 135 or output is 0, meaning that it doesn't support this API. */ 136 if (id == 0) 137 return -ENODATA; 138 139 /* Return norm array in a canonical way */ 140 for (i = 0; i <= index && id; i++) { 141 /* last std value in the standards array is 0, so this 142 while always ends there since (id & 0) == 0. */ 143 while ((id & standards[j].std) != standards[j].std) 144 j++; 145 curr_id = standards[j].std; 146 descr = standards[j].descr; 147 j++; 148 if (curr_id == 0) 149 break; 150 if (curr_id != V4L2_STD_PAL && 151 curr_id != V4L2_STD_SECAM && 152 curr_id != V4L2_STD_NTSC) 153 id &= ~curr_id; 154 } 155 if (i <= index) 156 return -EINVAL; 157 158 v4l2_video_std_construct(vs, curr_id, descr); 159 return 0; 160 } 161 162 /* ----------------------------------------------------------------- */ 163 /* some arrays for pretty-printing debug messages of enum types */ 164 165 const char *v4l2_field_names[] = { 166 [V4L2_FIELD_ANY] = "any", 167 [V4L2_FIELD_NONE] = "none", 168 [V4L2_FIELD_TOP] = "top", 169 [V4L2_FIELD_BOTTOM] = "bottom", 170 [V4L2_FIELD_INTERLACED] = "interlaced", 171 [V4L2_FIELD_SEQ_TB] = "seq-tb", 172 [V4L2_FIELD_SEQ_BT] = "seq-bt", 173 [V4L2_FIELD_ALTERNATE] = "alternate", 174 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb", 175 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt", 176 }; 177 EXPORT_SYMBOL(v4l2_field_names); 178 179 const char *v4l2_type_names[] = { 180 [0] = "0", 181 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap", 182 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay", 183 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out", 184 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap", 185 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out", 186 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap", 187 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out", 188 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay", 189 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane", 190 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane", 191 [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap", 192 [V4L2_BUF_TYPE_SDR_OUTPUT] = "sdr-out", 193 [V4L2_BUF_TYPE_META_CAPTURE] = "meta-cap", 194 [V4L2_BUF_TYPE_META_OUTPUT] = "meta-out", 195 }; 196 EXPORT_SYMBOL(v4l2_type_names); 197 198 static const char *v4l2_memory_names[] = { 199 [V4L2_MEMORY_MMAP] = "mmap", 200 [V4L2_MEMORY_USERPTR] = "userptr", 201 [V4L2_MEMORY_OVERLAY] = "overlay", 202 [V4L2_MEMORY_DMABUF] = "dmabuf", 203 }; 204 205 #define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown") 206 207 /* ------------------------------------------------------------------ */ 208 /* debug help functions */ 209 210 static void v4l_print_querycap(const void *arg, bool write_only) 211 { 212 const struct v4l2_capability *p = arg; 213 214 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, capabilities=0x%08x, device_caps=0x%08x\n", 215 (int)sizeof(p->driver), p->driver, 216 (int)sizeof(p->card), p->card, 217 (int)sizeof(p->bus_info), p->bus_info, 218 p->version, p->capabilities, p->device_caps); 219 } 220 221 static void v4l_print_enuminput(const void *arg, bool write_only) 222 { 223 const struct v4l2_input *p = arg; 224 225 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, std=0x%08Lx, status=0x%x, capabilities=0x%x\n", 226 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, 227 p->tuner, (unsigned long long)p->std, p->status, 228 p->capabilities); 229 } 230 231 static void v4l_print_enumoutput(const void *arg, bool write_only) 232 { 233 const struct v4l2_output *p = arg; 234 235 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, modulator=%u, std=0x%08Lx, capabilities=0x%x\n", 236 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, 237 p->modulator, (unsigned long long)p->std, p->capabilities); 238 } 239 240 static void v4l_print_audio(const void *arg, bool write_only) 241 { 242 const struct v4l2_audio *p = arg; 243 244 if (write_only) 245 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode); 246 else 247 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", 248 p->index, (int)sizeof(p->name), p->name, 249 p->capability, p->mode); 250 } 251 252 static void v4l_print_audioout(const void *arg, bool write_only) 253 { 254 const struct v4l2_audioout *p = arg; 255 256 if (write_only) 257 pr_cont("index=%u\n", p->index); 258 else 259 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", 260 p->index, (int)sizeof(p->name), p->name, 261 p->capability, p->mode); 262 } 263 264 static void v4l_print_fmtdesc(const void *arg, bool write_only) 265 { 266 const struct v4l2_fmtdesc *p = arg; 267 268 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%p4cc, mbus_code=0x%04x, description='%.*s'\n", 269 p->index, prt_names(p->type, v4l2_type_names), 270 p->flags, &p->pixelformat, p->mbus_code, 271 (int)sizeof(p->description), p->description); 272 } 273 274 static void v4l_print_format(const void *arg, bool write_only) 275 { 276 const struct v4l2_format *p = arg; 277 const struct v4l2_pix_format *pix; 278 const struct v4l2_pix_format_mplane *mp; 279 const struct v4l2_vbi_format *vbi; 280 const struct v4l2_sliced_vbi_format *sliced; 281 const struct v4l2_window *win; 282 const struct v4l2_sdr_format *sdr; 283 const struct v4l2_meta_format *meta; 284 u32 planes; 285 unsigned i; 286 287 pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); 288 switch (p->type) { 289 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 290 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 291 pix = &p->fmt.pix; 292 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", 293 pix->width, pix->height, &pix->pixelformat, 294 prt_names(pix->field, v4l2_field_names), 295 pix->bytesperline, pix->sizeimage, 296 pix->colorspace, pix->flags, pix->ycbcr_enc, 297 pix->quantization, pix->xfer_func); 298 break; 299 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 300 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 301 mp = &p->fmt.pix_mp; 302 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", 303 mp->width, mp->height, &mp->pixelformat, 304 prt_names(mp->field, v4l2_field_names), 305 mp->colorspace, mp->num_planes, mp->flags, 306 mp->ycbcr_enc, mp->quantization, mp->xfer_func); 307 planes = min_t(u32, mp->num_planes, VIDEO_MAX_PLANES); 308 for (i = 0; i < planes; i++) 309 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i, 310 mp->plane_fmt[i].bytesperline, 311 mp->plane_fmt[i].sizeimage); 312 break; 313 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 314 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 315 win = &p->fmt.win; 316 /* Note: we can't print the clip list here since the clips 317 * pointer is a userspace pointer, not a kernelspace 318 * pointer. */ 319 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", 320 win->w.width, win->w.height, win->w.left, win->w.top, 321 prt_names(win->field, v4l2_field_names), 322 win->chromakey, win->clipcount, win->clips, 323 win->bitmap, win->global_alpha); 324 break; 325 case V4L2_BUF_TYPE_VBI_CAPTURE: 326 case V4L2_BUF_TYPE_VBI_OUTPUT: 327 vbi = &p->fmt.vbi; 328 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%p4cc, start=%u,%u, count=%u,%u\n", 329 vbi->sampling_rate, vbi->offset, 330 vbi->samples_per_line, &vbi->sample_format, 331 vbi->start[0], vbi->start[1], 332 vbi->count[0], vbi->count[1]); 333 break; 334 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 335 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 336 sliced = &p->fmt.sliced; 337 pr_cont(", service_set=0x%08x, io_size=%d\n", 338 sliced->service_set, sliced->io_size); 339 for (i = 0; i < 24; i++) 340 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, 341 sliced->service_lines[0][i], 342 sliced->service_lines[1][i]); 343 break; 344 case V4L2_BUF_TYPE_SDR_CAPTURE: 345 case V4L2_BUF_TYPE_SDR_OUTPUT: 346 sdr = &p->fmt.sdr; 347 pr_cont(", pixelformat=%p4cc\n", &sdr->pixelformat); 348 break; 349 case V4L2_BUF_TYPE_META_CAPTURE: 350 case V4L2_BUF_TYPE_META_OUTPUT: 351 meta = &p->fmt.meta; 352 pr_cont(", dataformat=%p4cc, buffersize=%u\n", 353 &meta->dataformat, meta->buffersize); 354 break; 355 } 356 } 357 358 static void v4l_print_framebuffer(const void *arg, bool write_only) 359 { 360 const struct v4l2_framebuffer *p = arg; 361 362 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, height=%u, pixelformat=%p4cc, bytesperline=%u, sizeimage=%u, colorspace=%d\n", 363 p->capability, p->flags, p->base, p->fmt.width, p->fmt.height, 364 &p->fmt.pixelformat, p->fmt.bytesperline, p->fmt.sizeimage, 365 p->fmt.colorspace); 366 } 367 368 static void v4l_print_buftype(const void *arg, bool write_only) 369 { 370 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names)); 371 } 372 373 static void v4l_print_modulator(const void *arg, bool write_only) 374 { 375 const struct v4l2_modulator *p = arg; 376 377 if (write_only) 378 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans); 379 else 380 pr_cont("index=%u, name=%.*s, capability=0x%x, rangelow=%u, rangehigh=%u, txsubchans=0x%x\n", 381 p->index, (int)sizeof(p->name), p->name, p->capability, 382 p->rangelow, p->rangehigh, p->txsubchans); 383 } 384 385 static void v4l_print_tuner(const void *arg, bool write_only) 386 { 387 const struct v4l2_tuner *p = arg; 388 389 if (write_only) 390 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode); 391 else 392 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", 393 p->index, (int)sizeof(p->name), p->name, p->type, 394 p->capability, p->rangelow, 395 p->rangehigh, p->signal, p->afc, 396 p->rxsubchans, p->audmode); 397 } 398 399 static void v4l_print_frequency(const void *arg, bool write_only) 400 { 401 const struct v4l2_frequency *p = arg; 402 403 pr_cont("tuner=%u, type=%u, frequency=%u\n", 404 p->tuner, p->type, p->frequency); 405 } 406 407 static void v4l_print_standard(const void *arg, bool write_only) 408 { 409 const struct v4l2_standard *p = arg; 410 411 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, framelines=%u\n", 412 p->index, 413 (unsigned long long)p->id, (int)sizeof(p->name), p->name, 414 p->frameperiod.numerator, 415 p->frameperiod.denominator, 416 p->framelines); 417 } 418 419 static void v4l_print_std(const void *arg, bool write_only) 420 { 421 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg); 422 } 423 424 static void v4l_print_hw_freq_seek(const void *arg, bool write_only) 425 { 426 const struct v4l2_hw_freq_seek *p = arg; 427 428 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, rangelow=%u, rangehigh=%u\n", 429 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing, 430 p->rangelow, p->rangehigh); 431 } 432 433 static void v4l_print_requestbuffers(const void *arg, bool write_only) 434 { 435 const struct v4l2_requestbuffers *p = arg; 436 437 pr_cont("count=%d, type=%s, memory=%s\n", 438 p->count, 439 prt_names(p->type, v4l2_type_names), 440 prt_names(p->memory, v4l2_memory_names)); 441 } 442 443 static void v4l_print_buffer(const void *arg, bool write_only) 444 { 445 const struct v4l2_buffer *p = arg; 446 const struct v4l2_timecode *tc = &p->timecode; 447 const struct v4l2_plane *plane; 448 int i; 449 450 pr_cont("%02d:%02d:%02d.%06ld index=%d, type=%s, request_fd=%d, flags=0x%08x, field=%s, sequence=%d, memory=%s", 451 (int)p->timestamp.tv_sec / 3600, 452 ((int)p->timestamp.tv_sec / 60) % 60, 453 ((int)p->timestamp.tv_sec % 60), 454 (long)p->timestamp.tv_usec, 455 p->index, 456 prt_names(p->type, v4l2_type_names), p->request_fd, 457 p->flags, prt_names(p->field, v4l2_field_names), 458 p->sequence, prt_names(p->memory, v4l2_memory_names)); 459 460 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) { 461 pr_cont("\n"); 462 for (i = 0; i < p->length; ++i) { 463 plane = &p->m.planes[i]; 464 printk(KERN_DEBUG 465 "plane %d: bytesused=%d, data_offset=0x%08x, offset/userptr=0x%lx, length=%d\n", 466 i, plane->bytesused, plane->data_offset, 467 plane->m.userptr, plane->length); 468 } 469 } else { 470 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n", 471 p->bytesused, p->m.userptr, p->length); 472 } 473 474 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, flags=0x%08x, frames=%d, userbits=0x%08x\n", 475 tc->hours, tc->minutes, tc->seconds, 476 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits); 477 } 478 479 static void v4l_print_exportbuffer(const void *arg, bool write_only) 480 { 481 const struct v4l2_exportbuffer *p = arg; 482 483 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n", 484 p->fd, prt_names(p->type, v4l2_type_names), 485 p->index, p->plane, p->flags); 486 } 487 488 static void v4l_print_create_buffers(const void *arg, bool write_only) 489 { 490 const struct v4l2_create_buffers *p = arg; 491 492 pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, ", 493 p->index, p->count, prt_names(p->memory, v4l2_memory_names), 494 p->capabilities); 495 v4l_print_format(&p->format, write_only); 496 } 497 498 static void v4l_print_streamparm(const void *arg, bool write_only) 499 { 500 const struct v4l2_streamparm *p = arg; 501 502 pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); 503 504 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 505 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) { 506 const struct v4l2_captureparm *c = &p->parm.capture; 507 508 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, extendedmode=%d, readbuffers=%d\n", 509 c->capability, c->capturemode, 510 c->timeperframe.numerator, c->timeperframe.denominator, 511 c->extendedmode, c->readbuffers); 512 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT || 513 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { 514 const struct v4l2_outputparm *c = &p->parm.output; 515 516 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, extendedmode=%d, writebuffers=%d\n", 517 c->capability, c->outputmode, 518 c->timeperframe.numerator, c->timeperframe.denominator, 519 c->extendedmode, c->writebuffers); 520 } else { 521 pr_cont("\n"); 522 } 523 } 524 525 static void v4l_print_queryctrl(const void *arg, bool write_only) 526 { 527 const struct v4l2_queryctrl *p = arg; 528 529 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, step=%d, default=%d, flags=0x%08x\n", 530 p->id, p->type, (int)sizeof(p->name), p->name, 531 p->minimum, p->maximum, 532 p->step, p->default_value, p->flags); 533 } 534 535 static void v4l_print_query_ext_ctrl(const void *arg, bool write_only) 536 { 537 const struct v4l2_query_ext_ctrl *p = arg; 538 539 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", 540 p->id, p->type, (int)sizeof(p->name), p->name, 541 p->minimum, p->maximum, 542 p->step, p->default_value, p->flags, 543 p->elem_size, p->elems, p->nr_of_dims, 544 p->dims[0], p->dims[1], p->dims[2], p->dims[3]); 545 } 546 547 static void v4l_print_querymenu(const void *arg, bool write_only) 548 { 549 const struct v4l2_querymenu *p = arg; 550 551 pr_cont("id=0x%x, index=%d\n", p->id, p->index); 552 } 553 554 static void v4l_print_control(const void *arg, bool write_only) 555 { 556 const struct v4l2_control *p = arg; 557 const char *name = v4l2_ctrl_get_name(p->id); 558 559 if (name) 560 pr_cont("name=%s, ", name); 561 pr_cont("id=0x%x, value=%d\n", p->id, p->value); 562 } 563 564 static void v4l_print_ext_controls(const void *arg, bool write_only) 565 { 566 const struct v4l2_ext_controls *p = arg; 567 int i; 568 569 pr_cont("which=0x%x, count=%d, error_idx=%d, request_fd=%d", 570 p->which, p->count, p->error_idx, p->request_fd); 571 for (i = 0; i < p->count; i++) { 572 unsigned int id = p->controls[i].id; 573 const char *name = v4l2_ctrl_get_name(id); 574 575 if (name) 576 pr_cont(", name=%s", name); 577 if (!p->controls[i].size) 578 pr_cont(", id/val=0x%x/0x%x", id, p->controls[i].value); 579 else 580 pr_cont(", id/size=0x%x/%u", id, p->controls[i].size); 581 } 582 pr_cont("\n"); 583 } 584 585 static void v4l_print_cropcap(const void *arg, bool write_only) 586 { 587 const struct v4l2_cropcap *p = arg; 588 589 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, defrect wxh=%dx%d, x,y=%d,%d, pixelaspect %d/%d\n", 590 prt_names(p->type, v4l2_type_names), 591 p->bounds.width, p->bounds.height, 592 p->bounds.left, p->bounds.top, 593 p->defrect.width, p->defrect.height, 594 p->defrect.left, p->defrect.top, 595 p->pixelaspect.numerator, p->pixelaspect.denominator); 596 } 597 598 static void v4l_print_crop(const void *arg, bool write_only) 599 { 600 const struct v4l2_crop *p = arg; 601 602 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n", 603 prt_names(p->type, v4l2_type_names), 604 p->c.width, p->c.height, 605 p->c.left, p->c.top); 606 } 607 608 static void v4l_print_selection(const void *arg, bool write_only) 609 { 610 const struct v4l2_selection *p = arg; 611 612 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n", 613 prt_names(p->type, v4l2_type_names), 614 p->target, p->flags, 615 p->r.width, p->r.height, p->r.left, p->r.top); 616 } 617 618 static void v4l_print_jpegcompression(const void *arg, bool write_only) 619 { 620 const struct v4l2_jpegcompression *p = arg; 621 622 pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n", 623 p->quality, p->APPn, p->APP_len, 624 p->COM_len, p->jpeg_markers); 625 } 626 627 static void v4l_print_enc_idx(const void *arg, bool write_only) 628 { 629 const struct v4l2_enc_idx *p = arg; 630 631 pr_cont("entries=%d, entries_cap=%d\n", 632 p->entries, p->entries_cap); 633 } 634 635 static void v4l_print_encoder_cmd(const void *arg, bool write_only) 636 { 637 const struct v4l2_encoder_cmd *p = arg; 638 639 pr_cont("cmd=%d, flags=0x%x\n", 640 p->cmd, p->flags); 641 } 642 643 static void v4l_print_decoder_cmd(const void *arg, bool write_only) 644 { 645 const struct v4l2_decoder_cmd *p = arg; 646 647 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags); 648 649 if (p->cmd == V4L2_DEC_CMD_START) 650 pr_info("speed=%d, format=%u\n", 651 p->start.speed, p->start.format); 652 else if (p->cmd == V4L2_DEC_CMD_STOP) 653 pr_info("pts=%llu\n", p->stop.pts); 654 } 655 656 static void v4l_print_dbg_chip_info(const void *arg, bool write_only) 657 { 658 const struct v4l2_dbg_chip_info *p = arg; 659 660 pr_cont("type=%u, ", p->match.type); 661 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 662 pr_cont("name=%.*s, ", 663 (int)sizeof(p->match.name), p->match.name); 664 else 665 pr_cont("addr=%u, ", p->match.addr); 666 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name); 667 } 668 669 static void v4l_print_dbg_register(const void *arg, bool write_only) 670 { 671 const struct v4l2_dbg_register *p = arg; 672 673 pr_cont("type=%u, ", p->match.type); 674 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 675 pr_cont("name=%.*s, ", 676 (int)sizeof(p->match.name), p->match.name); 677 else 678 pr_cont("addr=%u, ", p->match.addr); 679 pr_cont("reg=0x%llx, val=0x%llx\n", 680 p->reg, p->val); 681 } 682 683 static void v4l_print_dv_timings(const void *arg, bool write_only) 684 { 685 const struct v4l2_dv_timings *p = arg; 686 687 switch (p->type) { 688 case V4L2_DV_BT_656_1120: 689 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", 690 p->bt.interlaced, p->bt.pixelclock, 691 p->bt.width, p->bt.height, 692 p->bt.polarities, p->bt.hfrontporch, 693 p->bt.hsync, p->bt.hbackporch, 694 p->bt.vfrontporch, p->bt.vsync, 695 p->bt.vbackporch, p->bt.il_vfrontporch, 696 p->bt.il_vsync, p->bt.il_vbackporch, 697 p->bt.standards, p->bt.flags); 698 break; 699 default: 700 pr_cont("type=%d\n", p->type); 701 break; 702 } 703 } 704 705 static void v4l_print_enum_dv_timings(const void *arg, bool write_only) 706 { 707 const struct v4l2_enum_dv_timings *p = arg; 708 709 pr_cont("index=%u, ", p->index); 710 v4l_print_dv_timings(&p->timings, write_only); 711 } 712 713 static void v4l_print_dv_timings_cap(const void *arg, bool write_only) 714 { 715 const struct v4l2_dv_timings_cap *p = arg; 716 717 switch (p->type) { 718 case V4L2_DV_BT_656_1120: 719 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n", 720 p->bt.min_width, p->bt.max_width, 721 p->bt.min_height, p->bt.max_height, 722 p->bt.min_pixelclock, p->bt.max_pixelclock, 723 p->bt.standards, p->bt.capabilities); 724 break; 725 default: 726 pr_cont("type=%u\n", p->type); 727 break; 728 } 729 } 730 731 static void v4l_print_frmsizeenum(const void *arg, bool write_only) 732 { 733 const struct v4l2_frmsizeenum *p = arg; 734 735 pr_cont("index=%u, pixelformat=%p4cc, type=%u", 736 p->index, &p->pixel_format, p->type); 737 switch (p->type) { 738 case V4L2_FRMSIZE_TYPE_DISCRETE: 739 pr_cont(", wxh=%ux%u\n", 740 p->discrete.width, p->discrete.height); 741 break; 742 case V4L2_FRMSIZE_TYPE_STEPWISE: 743 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n", 744 p->stepwise.min_width, 745 p->stepwise.min_height, 746 p->stepwise.max_width, 747 p->stepwise.max_height, 748 p->stepwise.step_width, 749 p->stepwise.step_height); 750 break; 751 case V4L2_FRMSIZE_TYPE_CONTINUOUS: 752 default: 753 pr_cont("\n"); 754 break; 755 } 756 } 757 758 static void v4l_print_frmivalenum(const void *arg, bool write_only) 759 { 760 const struct v4l2_frmivalenum *p = arg; 761 762 pr_cont("index=%u, pixelformat=%p4cc, wxh=%ux%u, type=%u", 763 p->index, &p->pixel_format, p->width, p->height, p->type); 764 switch (p->type) { 765 case V4L2_FRMIVAL_TYPE_DISCRETE: 766 pr_cont(", fps=%d/%d\n", 767 p->discrete.numerator, 768 p->discrete.denominator); 769 break; 770 case V4L2_FRMIVAL_TYPE_STEPWISE: 771 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n", 772 p->stepwise.min.numerator, 773 p->stepwise.min.denominator, 774 p->stepwise.max.numerator, 775 p->stepwise.max.denominator, 776 p->stepwise.step.numerator, 777 p->stepwise.step.denominator); 778 break; 779 case V4L2_FRMIVAL_TYPE_CONTINUOUS: 780 default: 781 pr_cont("\n"); 782 break; 783 } 784 } 785 786 static void v4l_print_event(const void *arg, bool write_only) 787 { 788 const struct v4l2_event *p = arg; 789 const struct v4l2_event_ctrl *c; 790 791 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%llu.%9.9llu\n", 792 p->type, p->pending, p->sequence, p->id, 793 p->timestamp.tv_sec, p->timestamp.tv_nsec); 794 switch (p->type) { 795 case V4L2_EVENT_VSYNC: 796 printk(KERN_DEBUG "field=%s\n", 797 prt_names(p->u.vsync.field, v4l2_field_names)); 798 break; 799 case V4L2_EVENT_CTRL: 800 c = &p->u.ctrl; 801 printk(KERN_DEBUG "changes=0x%x, type=%u, ", 802 c->changes, c->type); 803 if (c->type == V4L2_CTRL_TYPE_INTEGER64) 804 pr_cont("value64=%lld, ", c->value64); 805 else 806 pr_cont("value=%d, ", c->value); 807 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n", 808 c->flags, c->minimum, c->maximum, 809 c->step, c->default_value); 810 break; 811 case V4L2_EVENT_FRAME_SYNC: 812 pr_cont("frame_sequence=%u\n", 813 p->u.frame_sync.frame_sequence); 814 break; 815 } 816 } 817 818 static void v4l_print_event_subscription(const void *arg, bool write_only) 819 { 820 const struct v4l2_event_subscription *p = arg; 821 822 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n", 823 p->type, p->id, p->flags); 824 } 825 826 static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only) 827 { 828 const struct v4l2_sliced_vbi_cap *p = arg; 829 int i; 830 831 pr_cont("type=%s, service_set=0x%08x\n", 832 prt_names(p->type, v4l2_type_names), p->service_set); 833 for (i = 0; i < 24; i++) 834 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, 835 p->service_lines[0][i], 836 p->service_lines[1][i]); 837 } 838 839 static void v4l_print_freq_band(const void *arg, bool write_only) 840 { 841 const struct v4l2_frequency_band *p = arg; 842 843 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n", 844 p->tuner, p->type, p->index, 845 p->capability, p->rangelow, 846 p->rangehigh, p->modulation); 847 } 848 849 static void v4l_print_edid(const void *arg, bool write_only) 850 { 851 const struct v4l2_edid *p = arg; 852 853 pr_cont("pad=%u, start_block=%u, blocks=%u\n", 854 p->pad, p->start_block, p->blocks); 855 } 856 857 static void v4l_print_u32(const void *arg, bool write_only) 858 { 859 pr_cont("value=%u\n", *(const u32 *)arg); 860 } 861 862 static void v4l_print_newline(const void *arg, bool write_only) 863 { 864 pr_cont("\n"); 865 } 866 867 static void v4l_print_default(const void *arg, bool write_only) 868 { 869 pr_cont("driver-specific ioctl\n"); 870 } 871 872 static bool check_ext_ctrls(struct v4l2_ext_controls *c, unsigned long ioctl) 873 { 874 __u32 i; 875 876 /* zero the reserved fields */ 877 c->reserved[0] = 0; 878 for (i = 0; i < c->count; i++) 879 c->controls[i].reserved2[0] = 0; 880 881 switch (c->which) { 882 case V4L2_CID_PRIVATE_BASE: 883 /* 884 * V4L2_CID_PRIVATE_BASE cannot be used as control class 885 * when using extended controls. 886 * Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL 887 * is it allowed for backwards compatibility. 888 */ 889 if (ioctl == VIDIOC_G_CTRL || ioctl == VIDIOC_S_CTRL) 890 return false; 891 break; 892 case V4L2_CTRL_WHICH_DEF_VAL: 893 /* Default value cannot be changed */ 894 if (ioctl == VIDIOC_S_EXT_CTRLS || 895 ioctl == VIDIOC_TRY_EXT_CTRLS) { 896 c->error_idx = c->count; 897 return false; 898 } 899 return true; 900 case V4L2_CTRL_WHICH_CUR_VAL: 901 return true; 902 case V4L2_CTRL_WHICH_REQUEST_VAL: 903 c->error_idx = c->count; 904 return false; 905 } 906 907 /* Check that all controls are from the same control class. */ 908 for (i = 0; i < c->count; i++) { 909 if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) { 910 c->error_idx = ioctl == VIDIOC_TRY_EXT_CTRLS ? i : 911 c->count; 912 return false; 913 } 914 } 915 return true; 916 } 917 918 static int check_fmt(struct file *file, enum v4l2_buf_type type) 919 { 920 const u32 vid_caps = V4L2_CAP_VIDEO_CAPTURE | 921 V4L2_CAP_VIDEO_CAPTURE_MPLANE | 922 V4L2_CAP_VIDEO_OUTPUT | 923 V4L2_CAP_VIDEO_OUTPUT_MPLANE | 924 V4L2_CAP_VIDEO_M2M | V4L2_CAP_VIDEO_M2M_MPLANE; 925 const u32 meta_caps = V4L2_CAP_META_CAPTURE | 926 V4L2_CAP_META_OUTPUT; 927 struct video_device *vfd = video_devdata(file); 928 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 929 bool is_vid = vfd->vfl_type == VFL_TYPE_VIDEO && 930 (vfd->device_caps & vid_caps); 931 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI; 932 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; 933 bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; 934 bool is_meta = vfd->vfl_type == VFL_TYPE_VIDEO && 935 (vfd->device_caps & meta_caps); 936 bool is_rx = vfd->vfl_dir != VFL_DIR_TX; 937 bool is_tx = vfd->vfl_dir != VFL_DIR_RX; 938 939 if (ops == NULL) 940 return -EINVAL; 941 942 switch (type) { 943 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 944 if ((is_vid || is_tch) && is_rx && 945 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane)) 946 return 0; 947 break; 948 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 949 if ((is_vid || is_tch) && is_rx && ops->vidioc_g_fmt_vid_cap_mplane) 950 return 0; 951 break; 952 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 953 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay) 954 return 0; 955 break; 956 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 957 if (is_vid && is_tx && 958 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane)) 959 return 0; 960 break; 961 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 962 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane) 963 return 0; 964 break; 965 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 966 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay) 967 return 0; 968 break; 969 case V4L2_BUF_TYPE_VBI_CAPTURE: 970 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap) 971 return 0; 972 break; 973 case V4L2_BUF_TYPE_VBI_OUTPUT: 974 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out) 975 return 0; 976 break; 977 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 978 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap) 979 return 0; 980 break; 981 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 982 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out) 983 return 0; 984 break; 985 case V4L2_BUF_TYPE_SDR_CAPTURE: 986 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap) 987 return 0; 988 break; 989 case V4L2_BUF_TYPE_SDR_OUTPUT: 990 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out) 991 return 0; 992 break; 993 case V4L2_BUF_TYPE_META_CAPTURE: 994 if (is_meta && is_rx && ops->vidioc_g_fmt_meta_cap) 995 return 0; 996 break; 997 case V4L2_BUF_TYPE_META_OUTPUT: 998 if (is_meta && is_tx && ops->vidioc_g_fmt_meta_out) 999 return 0; 1000 break; 1001 default: 1002 break; 1003 } 1004 return -EINVAL; 1005 } 1006 1007 static void v4l_sanitize_format(struct v4l2_format *fmt) 1008 { 1009 unsigned int offset; 1010 1011 /* Make sure num_planes is not bogus */ 1012 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE || 1013 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 1014 fmt->fmt.pix_mp.num_planes = min_t(u32, fmt->fmt.pix_mp.num_planes, 1015 VIDEO_MAX_PLANES); 1016 1017 /* 1018 * The v4l2_pix_format structure has been extended with fields that were 1019 * not previously required to be set to zero by applications. The priv 1020 * field, when set to a magic value, indicates the the extended fields 1021 * are valid. Otherwise they will contain undefined values. To simplify 1022 * the API towards drivers zero the extended fields and set the priv 1023 * field to the magic value when the extended pixel format structure 1024 * isn't used by applications. 1025 */ 1026 1027 if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && 1028 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) 1029 return; 1030 1031 if (fmt->fmt.pix.priv == V4L2_PIX_FMT_PRIV_MAGIC) 1032 return; 1033 1034 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1035 1036 offset = offsetof(struct v4l2_pix_format, priv) 1037 + sizeof(fmt->fmt.pix.priv); 1038 memset(((void *)&fmt->fmt.pix) + offset, 0, 1039 sizeof(fmt->fmt.pix) - offset); 1040 } 1041 1042 static int v4l_querycap(const struct v4l2_ioctl_ops *ops, 1043 struct file *file, void *fh, void *arg) 1044 { 1045 struct v4l2_capability *cap = (struct v4l2_capability *)arg; 1046 struct video_device *vfd = video_devdata(file); 1047 int ret; 1048 1049 cap->version = LINUX_VERSION_CODE; 1050 cap->device_caps = vfd->device_caps; 1051 cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS; 1052 1053 ret = ops->vidioc_querycap(file, fh, cap); 1054 1055 /* 1056 * Drivers must not change device_caps, so check for this and 1057 * warn if this happened. 1058 */ 1059 WARN_ON(cap->device_caps != vfd->device_caps); 1060 /* 1061 * Check that capabilities is a superset of 1062 * vfd->device_caps | V4L2_CAP_DEVICE_CAPS 1063 */ 1064 WARN_ON((cap->capabilities & 1065 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)) != 1066 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)); 1067 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT; 1068 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT; 1069 1070 return ret; 1071 } 1072 1073 static int v4l_g_input(const struct v4l2_ioctl_ops *ops, 1074 struct file *file, void *fh, void *arg) 1075 { 1076 struct video_device *vfd = video_devdata(file); 1077 1078 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1079 *(int *)arg = 0; 1080 return 0; 1081 } 1082 1083 return ops->vidioc_g_input(file, fh, arg); 1084 } 1085 1086 static int v4l_g_output(const struct v4l2_ioctl_ops *ops, 1087 struct file *file, void *fh, void *arg) 1088 { 1089 struct video_device *vfd = video_devdata(file); 1090 1091 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1092 *(int *)arg = 0; 1093 return 0; 1094 } 1095 1096 return ops->vidioc_g_output(file, fh, arg); 1097 } 1098 1099 static int v4l_s_input(const struct v4l2_ioctl_ops *ops, 1100 struct file *file, void *fh, void *arg) 1101 { 1102 struct video_device *vfd = video_devdata(file); 1103 int ret; 1104 1105 ret = v4l_enable_media_source(vfd); 1106 if (ret) 1107 return ret; 1108 1109 if (vfd->device_caps & V4L2_CAP_IO_MC) 1110 return *(int *)arg ? -EINVAL : 0; 1111 1112 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg); 1113 } 1114 1115 static int v4l_s_output(const struct v4l2_ioctl_ops *ops, 1116 struct file *file, void *fh, void *arg) 1117 { 1118 struct video_device *vfd = video_devdata(file); 1119 1120 if (vfd->device_caps & V4L2_CAP_IO_MC) 1121 return *(int *)arg ? -EINVAL : 0; 1122 1123 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg); 1124 } 1125 1126 static int v4l_g_priority(const struct v4l2_ioctl_ops *ops, 1127 struct file *file, void *fh, void *arg) 1128 { 1129 struct video_device *vfd; 1130 u32 *p = arg; 1131 1132 vfd = video_devdata(file); 1133 *p = v4l2_prio_max(vfd->prio); 1134 return 0; 1135 } 1136 1137 static int v4l_s_priority(const struct v4l2_ioctl_ops *ops, 1138 struct file *file, void *fh, void *arg) 1139 { 1140 struct video_device *vfd; 1141 struct v4l2_fh *vfh; 1142 u32 *p = arg; 1143 1144 vfd = video_devdata(file); 1145 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 1146 return -ENOTTY; 1147 vfh = file->private_data; 1148 return v4l2_prio_change(vfd->prio, &vfh->prio, *p); 1149 } 1150 1151 static int v4l_enuminput(const struct v4l2_ioctl_ops *ops, 1152 struct file *file, void *fh, void *arg) 1153 { 1154 struct video_device *vfd = video_devdata(file); 1155 struct v4l2_input *p = arg; 1156 1157 /* 1158 * We set the flags for CAP_DV_TIMINGS & 1159 * CAP_STD here based on ioctl handler provided by the 1160 * driver. If the driver doesn't support these 1161 * for a specific input, it must override these flags. 1162 */ 1163 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1164 p->capabilities |= V4L2_IN_CAP_STD; 1165 1166 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1167 if (p->index) 1168 return -EINVAL; 1169 strscpy(p->name, vfd->name, sizeof(p->name)); 1170 p->type = V4L2_INPUT_TYPE_CAMERA; 1171 return 0; 1172 } 1173 1174 return ops->vidioc_enum_input(file, fh, p); 1175 } 1176 1177 static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops, 1178 struct file *file, void *fh, void *arg) 1179 { 1180 struct video_device *vfd = video_devdata(file); 1181 struct v4l2_output *p = arg; 1182 1183 /* 1184 * We set the flags for CAP_DV_TIMINGS & 1185 * CAP_STD here based on ioctl handler provided by the 1186 * driver. If the driver doesn't support these 1187 * for a specific output, it must override these flags. 1188 */ 1189 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1190 p->capabilities |= V4L2_OUT_CAP_STD; 1191 1192 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1193 if (p->index) 1194 return -EINVAL; 1195 strscpy(p->name, vfd->name, sizeof(p->name)); 1196 p->type = V4L2_OUTPUT_TYPE_ANALOG; 1197 return 0; 1198 } 1199 1200 return ops->vidioc_enum_output(file, fh, p); 1201 } 1202 1203 static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) 1204 { 1205 const unsigned sz = sizeof(fmt->description); 1206 const char *descr = NULL; 1207 u32 flags = 0; 1208 1209 /* 1210 * We depart from the normal coding style here since the descriptions 1211 * should be aligned so it is easy to see which descriptions will be 1212 * longer than 31 characters (the max length for a description). 1213 * And frankly, this is easier to read anyway. 1214 * 1215 * Note that gcc will use O(log N) comparisons to find the right case. 1216 */ 1217 switch (fmt->pixelformat) { 1218 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1219 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break; 1220 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break; 1221 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break; 1222 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break; 1223 case V4L2_PIX_FMT_RGBA444: descr = "16-bit RGBA 4-4-4-4"; break; 1224 case V4L2_PIX_FMT_RGBX444: descr = "16-bit RGBX 4-4-4-4"; break; 1225 case V4L2_PIX_FMT_ABGR444: descr = "16-bit ABGR 4-4-4-4"; break; 1226 case V4L2_PIX_FMT_XBGR444: descr = "16-bit XBGR 4-4-4-4"; break; 1227 case V4L2_PIX_FMT_BGRA444: descr = "16-bit BGRA 4-4-4-4"; break; 1228 case V4L2_PIX_FMT_BGRX444: descr = "16-bit BGRX 4-4-4-4"; break; 1229 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break; 1230 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break; 1231 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break; 1232 case V4L2_PIX_FMT_ABGR555: descr = "16-bit ABGR 1-5-5-5"; break; 1233 case V4L2_PIX_FMT_XBGR555: descr = "16-bit XBGR 1-5-5-5"; break; 1234 case V4L2_PIX_FMT_RGBA555: descr = "16-bit RGBA 5-5-5-1"; break; 1235 case V4L2_PIX_FMT_RGBX555: descr = "16-bit RGBX 5-5-5-1"; break; 1236 case V4L2_PIX_FMT_BGRA555: descr = "16-bit BGRA 5-5-5-1"; break; 1237 case V4L2_PIX_FMT_BGRX555: descr = "16-bit BGRX 5-5-5-1"; break; 1238 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break; 1239 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break; 1240 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break; 1241 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break; 1242 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break; 1243 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break; 1244 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break; 1245 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break; 1246 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break; 1247 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break; 1248 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break; 1249 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break; 1250 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break; 1251 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break; 1252 case V4L2_PIX_FMT_BGRA32: descr = "32-bit ABGR 8-8-8-8"; break; 1253 case V4L2_PIX_FMT_BGRX32: descr = "32-bit XBGR 8-8-8-8"; break; 1254 case V4L2_PIX_FMT_RGBA32: descr = "32-bit RGBA 8-8-8-8"; break; 1255 case V4L2_PIX_FMT_RGBX32: descr = "32-bit RGBX 8-8-8-8"; break; 1256 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break; 1257 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break; 1258 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break; 1259 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break; 1260 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break; 1261 case V4L2_PIX_FMT_Y14: descr = "14-bit Greyscale"; break; 1262 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break; 1263 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break; 1264 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break; 1265 case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break; 1266 case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break; 1267 case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break; 1268 case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break; 1269 case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break; 1270 case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break; 1271 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break; 1272 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break; 1273 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break; 1274 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break; 1275 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break; 1276 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break; 1277 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break; 1278 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break; 1279 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break; 1280 case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break; 1281 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break; 1282 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break; 1283 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break; 1284 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break; 1285 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break; 1286 case V4L2_PIX_FMT_YUV24: descr = "24-bit YUV 4:4:4 8-8-8"; break; 1287 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break; 1288 case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break; 1289 case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break; 1290 case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break; 1291 case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break; 1292 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break; 1293 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break; 1294 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break; 1295 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break; 1296 case V4L2_PIX_FMT_NV12: descr = "Y/CbCr 4:2:0"; break; 1297 case V4L2_PIX_FMT_NV21: descr = "Y/CrCb 4:2:0"; break; 1298 case V4L2_PIX_FMT_NV16: descr = "Y/CbCr 4:2:2"; break; 1299 case V4L2_PIX_FMT_NV61: descr = "Y/CrCb 4:2:2"; break; 1300 case V4L2_PIX_FMT_NV24: descr = "Y/CbCr 4:4:4"; break; 1301 case V4L2_PIX_FMT_NV42: descr = "Y/CrCb 4:4:4"; break; 1302 case V4L2_PIX_FMT_NV12_4L4: descr = "Y/CbCr 4:2:0 (4x4 Linear)"; break; 1303 case V4L2_PIX_FMT_NV12_16L16: descr = "Y/CbCr 4:2:0 (16x16 Linear)"; break; 1304 case V4L2_PIX_FMT_NV12_32L32: descr = "Y/CbCr 4:2:0 (32x32 Linear)"; break; 1305 case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break; 1306 case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break; 1307 case V4L2_PIX_FMT_NV16M: descr = "Y/CbCr 4:2:2 (N-C)"; break; 1308 case V4L2_PIX_FMT_NV61M: descr = "Y/CrCb 4:2:2 (N-C)"; break; 1309 case V4L2_PIX_FMT_NV12MT: descr = "Y/CbCr 4:2:0 (64x32 MB, N-C)"; break; 1310 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/CbCr 4:2:0 (16x16 MB, N-C)"; break; 1311 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break; 1312 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break; 1313 case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break; 1314 case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break; 1315 case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break; 1316 case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break; 1317 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break; 1318 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break; 1319 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break; 1320 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break; 1321 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break; 1322 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break; 1323 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break; 1324 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break; 1325 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break; 1326 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break; 1327 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break; 1328 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break; 1329 case V4L2_PIX_FMT_IPU3_SBGGR10: descr = "10-bit bayer BGGR IPU3 Packed"; break; 1330 case V4L2_PIX_FMT_IPU3_SGBRG10: descr = "10-bit bayer GBRG IPU3 Packed"; break; 1331 case V4L2_PIX_FMT_IPU3_SGRBG10: descr = "10-bit bayer GRBG IPU3 Packed"; break; 1332 case V4L2_PIX_FMT_IPU3_SRGGB10: descr = "10-bit bayer RGGB IPU3 Packed"; break; 1333 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break; 1334 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break; 1335 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break; 1336 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break; 1337 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break; 1338 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break; 1339 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break; 1340 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break; 1341 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break; 1342 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break; 1343 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break; 1344 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break; 1345 case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break; 1346 case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break; 1347 case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break; 1348 case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break; 1349 case V4L2_PIX_FMT_SBGGR14: descr = "14-bit Bayer BGBG/GRGR"; break; 1350 case V4L2_PIX_FMT_SGBRG14: descr = "14-bit Bayer GBGB/RGRG"; break; 1351 case V4L2_PIX_FMT_SGRBG14: descr = "14-bit Bayer GRGR/BGBG"; break; 1352 case V4L2_PIX_FMT_SRGGB14: descr = "14-bit Bayer RGRG/GBGB"; break; 1353 case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break; 1354 case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break; 1355 case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break; 1356 case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break; 1357 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break; 1358 case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break; 1359 case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break; 1360 case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break; 1361 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break; 1362 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break; 1363 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break; 1364 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break; 1365 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break; 1366 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break; 1367 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break; 1368 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break; 1369 case V4L2_PIX_FMT_MM21: descr = "Mediatek 8-bit Block Format"; break; 1370 case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break; 1371 case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break; 1372 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break; 1373 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break; 1374 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break; 1375 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break; 1376 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break; 1377 case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break; 1378 case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break; 1379 case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break; 1380 case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit Signed Deltas"; break; 1381 case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit Signed Deltas"; break; 1382 case V4L2_TCH_FMT_TU16: descr = "16-bit Unsigned Touch Data"; break; 1383 case V4L2_TCH_FMT_TU08: descr = "8-bit Unsigned Touch Data"; break; 1384 case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break; 1385 case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break; 1386 case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break; 1387 case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break; 1388 case V4L2_META_FMT_VIVID: descr = "Vivid Metadata"; break; 1389 case V4L2_META_FMT_RK_ISP1_PARAMS: descr = "Rockchip ISP1 3A Parameters"; break; 1390 case V4L2_META_FMT_RK_ISP1_STAT_3A: descr = "Rockchip ISP1 3A Statistics"; break; 1391 1392 default: 1393 /* Compressed formats */ 1394 flags = V4L2_FMT_FLAG_COMPRESSED; 1395 switch (fmt->pixelformat) { 1396 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1397 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break; 1398 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break; 1399 case V4L2_PIX_FMT_DV: descr = "1394"; break; 1400 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break; 1401 case V4L2_PIX_FMT_H264: descr = "H.264"; break; 1402 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break; 1403 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break; 1404 case V4L2_PIX_FMT_H264_SLICE: descr = "H.264 Parsed Slice Data"; break; 1405 case V4L2_PIX_FMT_H263: descr = "H.263"; break; 1406 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break; 1407 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break; 1408 case V4L2_PIX_FMT_MPEG2_SLICE: descr = "MPEG-2 Parsed Slice Data"; break; 1409 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 Part 2 ES"; break; 1410 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break; 1411 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break; 1412 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break; 1413 case V4L2_PIX_FMT_VP8: descr = "VP8"; break; 1414 case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break; 1415 case V4L2_PIX_FMT_VP9: descr = "VP9"; break; 1416 case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */ 1417 case V4L2_PIX_FMT_HEVC_SLICE: descr = "HEVC Parsed Slice Data"; break; 1418 case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */ 1419 case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */ 1420 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break; 1421 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break; 1422 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break; 1423 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break; 1424 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break; 1425 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break; 1426 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break; 1427 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break; 1428 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break; 1429 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break; 1430 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break; 1431 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break; 1432 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break; 1433 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break; 1434 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break; 1435 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break; 1436 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break; 1437 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break; 1438 case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break; 1439 default: 1440 if (fmt->description[0]) 1441 return; 1442 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat); 1443 flags = 0; 1444 snprintf(fmt->description, sz, "%p4cc", 1445 &fmt->pixelformat); 1446 break; 1447 } 1448 } 1449 1450 if (descr) 1451 WARN_ON(strscpy(fmt->description, descr, sz) < 0); 1452 fmt->flags |= flags; 1453 } 1454 1455 static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops, 1456 struct file *file, void *fh, void *arg) 1457 { 1458 struct video_device *vdev = video_devdata(file); 1459 struct v4l2_fmtdesc *p = arg; 1460 int ret = check_fmt(file, p->type); 1461 u32 mbus_code; 1462 u32 cap_mask; 1463 1464 if (ret) 1465 return ret; 1466 ret = -EINVAL; 1467 1468 if (!(vdev->device_caps & V4L2_CAP_IO_MC)) 1469 p->mbus_code = 0; 1470 1471 mbus_code = p->mbus_code; 1472 CLEAR_AFTER_FIELD(p, type); 1473 p->mbus_code = mbus_code; 1474 1475 switch (p->type) { 1476 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1477 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1478 cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE | 1479 V4L2_CAP_VIDEO_M2M_MPLANE; 1480 if (!!(vdev->device_caps & cap_mask) != 1481 (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) 1482 break; 1483 1484 if (unlikely(!ops->vidioc_enum_fmt_vid_cap)) 1485 break; 1486 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg); 1487 break; 1488 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1489 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay)) 1490 break; 1491 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg); 1492 break; 1493 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1494 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1495 cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE | 1496 V4L2_CAP_VIDEO_M2M_MPLANE; 1497 if (!!(vdev->device_caps & cap_mask) != 1498 (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)) 1499 break; 1500 1501 if (unlikely(!ops->vidioc_enum_fmt_vid_out)) 1502 break; 1503 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg); 1504 break; 1505 case V4L2_BUF_TYPE_SDR_CAPTURE: 1506 if (unlikely(!ops->vidioc_enum_fmt_sdr_cap)) 1507 break; 1508 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg); 1509 break; 1510 case V4L2_BUF_TYPE_SDR_OUTPUT: 1511 if (unlikely(!ops->vidioc_enum_fmt_sdr_out)) 1512 break; 1513 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg); 1514 break; 1515 case V4L2_BUF_TYPE_META_CAPTURE: 1516 if (unlikely(!ops->vidioc_enum_fmt_meta_cap)) 1517 break; 1518 ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg); 1519 break; 1520 case V4L2_BUF_TYPE_META_OUTPUT: 1521 if (unlikely(!ops->vidioc_enum_fmt_meta_out)) 1522 break; 1523 ret = ops->vidioc_enum_fmt_meta_out(file, fh, arg); 1524 break; 1525 } 1526 if (ret == 0) 1527 v4l_fill_fmtdesc(p); 1528 return ret; 1529 } 1530 1531 static void v4l_pix_format_touch(struct v4l2_pix_format *p) 1532 { 1533 /* 1534 * The v4l2_pix_format structure contains fields that make no sense for 1535 * touch. Set them to default values in this case. 1536 */ 1537 1538 p->field = V4L2_FIELD_NONE; 1539 p->colorspace = V4L2_COLORSPACE_RAW; 1540 p->flags = 0; 1541 p->ycbcr_enc = 0; 1542 p->quantization = 0; 1543 p->xfer_func = 0; 1544 } 1545 1546 static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, 1547 struct file *file, void *fh, void *arg) 1548 { 1549 struct v4l2_format *p = arg; 1550 struct video_device *vfd = video_devdata(file); 1551 int ret = check_fmt(file, p->type); 1552 1553 if (ret) 1554 return ret; 1555 1556 /* 1557 * fmt can't be cleared for these overlay types due to the 'clips' 1558 * 'clipcount' and 'bitmap' pointers in struct v4l2_window. 1559 * Those are provided by the user. So handle these two overlay types 1560 * first, and then just do a simple memset for the other types. 1561 */ 1562 switch (p->type) { 1563 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1564 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: { 1565 struct v4l2_clip *clips = p->fmt.win.clips; 1566 u32 clipcount = p->fmt.win.clipcount; 1567 void __user *bitmap = p->fmt.win.bitmap; 1568 1569 memset(&p->fmt, 0, sizeof(p->fmt)); 1570 p->fmt.win.clips = clips; 1571 p->fmt.win.clipcount = clipcount; 1572 p->fmt.win.bitmap = bitmap; 1573 break; 1574 } 1575 default: 1576 memset(&p->fmt, 0, sizeof(p->fmt)); 1577 break; 1578 } 1579 1580 switch (p->type) { 1581 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1582 if (unlikely(!ops->vidioc_g_fmt_vid_cap)) 1583 break; 1584 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1585 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg); 1586 /* just in case the driver zeroed it again */ 1587 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1588 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1589 v4l_pix_format_touch(&p->fmt.pix); 1590 return ret; 1591 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1592 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg); 1593 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1594 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg); 1595 case V4L2_BUF_TYPE_VBI_CAPTURE: 1596 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg); 1597 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1598 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg); 1599 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1600 if (unlikely(!ops->vidioc_g_fmt_vid_out)) 1601 break; 1602 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1603 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg); 1604 /* just in case the driver zeroed it again */ 1605 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1606 return ret; 1607 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1608 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg); 1609 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1610 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg); 1611 case V4L2_BUF_TYPE_VBI_OUTPUT: 1612 return ops->vidioc_g_fmt_vbi_out(file, fh, arg); 1613 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1614 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg); 1615 case V4L2_BUF_TYPE_SDR_CAPTURE: 1616 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg); 1617 case V4L2_BUF_TYPE_SDR_OUTPUT: 1618 return ops->vidioc_g_fmt_sdr_out(file, fh, arg); 1619 case V4L2_BUF_TYPE_META_CAPTURE: 1620 return ops->vidioc_g_fmt_meta_cap(file, fh, arg); 1621 case V4L2_BUF_TYPE_META_OUTPUT: 1622 return ops->vidioc_g_fmt_meta_out(file, fh, arg); 1623 } 1624 return -EINVAL; 1625 } 1626 1627 static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, 1628 struct file *file, void *fh, void *arg) 1629 { 1630 struct v4l2_format *p = arg; 1631 struct video_device *vfd = video_devdata(file); 1632 int ret = check_fmt(file, p->type); 1633 unsigned int i; 1634 1635 if (ret) 1636 return ret; 1637 1638 ret = v4l_enable_media_source(vfd); 1639 if (ret) 1640 return ret; 1641 v4l_sanitize_format(p); 1642 1643 switch (p->type) { 1644 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1645 if (unlikely(!ops->vidioc_s_fmt_vid_cap)) 1646 break; 1647 CLEAR_AFTER_FIELD(p, fmt.pix); 1648 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg); 1649 /* just in case the driver zeroed it again */ 1650 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1651 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1652 v4l_pix_format_touch(&p->fmt.pix); 1653 return ret; 1654 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1655 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane)) 1656 break; 1657 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1658 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1659 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1660 bytesperline); 1661 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg); 1662 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1663 if (unlikely(!ops->vidioc_s_fmt_vid_overlay)) 1664 break; 1665 CLEAR_AFTER_FIELD(p, fmt.win); 1666 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg); 1667 case V4L2_BUF_TYPE_VBI_CAPTURE: 1668 if (unlikely(!ops->vidioc_s_fmt_vbi_cap)) 1669 break; 1670 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1671 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg); 1672 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1673 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap)) 1674 break; 1675 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1676 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg); 1677 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1678 if (unlikely(!ops->vidioc_s_fmt_vid_out)) 1679 break; 1680 CLEAR_AFTER_FIELD(p, fmt.pix); 1681 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg); 1682 /* just in case the driver zeroed it again */ 1683 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1684 return ret; 1685 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1686 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane)) 1687 break; 1688 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1689 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1690 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1691 bytesperline); 1692 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg); 1693 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1694 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay)) 1695 break; 1696 CLEAR_AFTER_FIELD(p, fmt.win); 1697 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg); 1698 case V4L2_BUF_TYPE_VBI_OUTPUT: 1699 if (unlikely(!ops->vidioc_s_fmt_vbi_out)) 1700 break; 1701 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1702 return ops->vidioc_s_fmt_vbi_out(file, fh, arg); 1703 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1704 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out)) 1705 break; 1706 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1707 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg); 1708 case V4L2_BUF_TYPE_SDR_CAPTURE: 1709 if (unlikely(!ops->vidioc_s_fmt_sdr_cap)) 1710 break; 1711 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1712 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg); 1713 case V4L2_BUF_TYPE_SDR_OUTPUT: 1714 if (unlikely(!ops->vidioc_s_fmt_sdr_out)) 1715 break; 1716 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1717 return ops->vidioc_s_fmt_sdr_out(file, fh, arg); 1718 case V4L2_BUF_TYPE_META_CAPTURE: 1719 if (unlikely(!ops->vidioc_s_fmt_meta_cap)) 1720 break; 1721 CLEAR_AFTER_FIELD(p, fmt.meta); 1722 return ops->vidioc_s_fmt_meta_cap(file, fh, arg); 1723 case V4L2_BUF_TYPE_META_OUTPUT: 1724 if (unlikely(!ops->vidioc_s_fmt_meta_out)) 1725 break; 1726 CLEAR_AFTER_FIELD(p, fmt.meta); 1727 return ops->vidioc_s_fmt_meta_out(file, fh, arg); 1728 } 1729 return -EINVAL; 1730 } 1731 1732 static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, 1733 struct file *file, void *fh, void *arg) 1734 { 1735 struct v4l2_format *p = arg; 1736 struct video_device *vfd = video_devdata(file); 1737 int ret = check_fmt(file, p->type); 1738 unsigned int i; 1739 1740 if (ret) 1741 return ret; 1742 1743 v4l_sanitize_format(p); 1744 1745 switch (p->type) { 1746 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1747 if (unlikely(!ops->vidioc_try_fmt_vid_cap)) 1748 break; 1749 CLEAR_AFTER_FIELD(p, fmt.pix); 1750 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg); 1751 /* just in case the driver zeroed it again */ 1752 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1753 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1754 v4l_pix_format_touch(&p->fmt.pix); 1755 return ret; 1756 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1757 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane)) 1758 break; 1759 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1760 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1761 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1762 bytesperline); 1763 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg); 1764 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1765 if (unlikely(!ops->vidioc_try_fmt_vid_overlay)) 1766 break; 1767 CLEAR_AFTER_FIELD(p, fmt.win); 1768 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg); 1769 case V4L2_BUF_TYPE_VBI_CAPTURE: 1770 if (unlikely(!ops->vidioc_try_fmt_vbi_cap)) 1771 break; 1772 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1773 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg); 1774 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1775 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap)) 1776 break; 1777 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1778 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg); 1779 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1780 if (unlikely(!ops->vidioc_try_fmt_vid_out)) 1781 break; 1782 CLEAR_AFTER_FIELD(p, fmt.pix); 1783 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg); 1784 /* just in case the driver zeroed it again */ 1785 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1786 return ret; 1787 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1788 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane)) 1789 break; 1790 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1791 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1792 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1793 bytesperline); 1794 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg); 1795 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1796 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay)) 1797 break; 1798 CLEAR_AFTER_FIELD(p, fmt.win); 1799 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg); 1800 case V4L2_BUF_TYPE_VBI_OUTPUT: 1801 if (unlikely(!ops->vidioc_try_fmt_vbi_out)) 1802 break; 1803 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1804 return ops->vidioc_try_fmt_vbi_out(file, fh, arg); 1805 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1806 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out)) 1807 break; 1808 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1809 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg); 1810 case V4L2_BUF_TYPE_SDR_CAPTURE: 1811 if (unlikely(!ops->vidioc_try_fmt_sdr_cap)) 1812 break; 1813 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1814 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg); 1815 case V4L2_BUF_TYPE_SDR_OUTPUT: 1816 if (unlikely(!ops->vidioc_try_fmt_sdr_out)) 1817 break; 1818 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1819 return ops->vidioc_try_fmt_sdr_out(file, fh, arg); 1820 case V4L2_BUF_TYPE_META_CAPTURE: 1821 if (unlikely(!ops->vidioc_try_fmt_meta_cap)) 1822 break; 1823 CLEAR_AFTER_FIELD(p, fmt.meta); 1824 return ops->vidioc_try_fmt_meta_cap(file, fh, arg); 1825 case V4L2_BUF_TYPE_META_OUTPUT: 1826 if (unlikely(!ops->vidioc_try_fmt_meta_out)) 1827 break; 1828 CLEAR_AFTER_FIELD(p, fmt.meta); 1829 return ops->vidioc_try_fmt_meta_out(file, fh, arg); 1830 } 1831 return -EINVAL; 1832 } 1833 1834 static int v4l_streamon(const struct v4l2_ioctl_ops *ops, 1835 struct file *file, void *fh, void *arg) 1836 { 1837 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg); 1838 } 1839 1840 static int v4l_streamoff(const struct v4l2_ioctl_ops *ops, 1841 struct file *file, void *fh, void *arg) 1842 { 1843 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg); 1844 } 1845 1846 static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops, 1847 struct file *file, void *fh, void *arg) 1848 { 1849 struct video_device *vfd = video_devdata(file); 1850 struct v4l2_tuner *p = arg; 1851 int err; 1852 1853 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1854 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1855 err = ops->vidioc_g_tuner(file, fh, p); 1856 if (!err) 1857 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1858 return err; 1859 } 1860 1861 static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops, 1862 struct file *file, void *fh, void *arg) 1863 { 1864 struct video_device *vfd = video_devdata(file); 1865 struct v4l2_tuner *p = arg; 1866 int ret; 1867 1868 ret = v4l_enable_media_source(vfd); 1869 if (ret) 1870 return ret; 1871 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1872 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1873 return ops->vidioc_s_tuner(file, fh, p); 1874 } 1875 1876 static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops, 1877 struct file *file, void *fh, void *arg) 1878 { 1879 struct video_device *vfd = video_devdata(file); 1880 struct v4l2_modulator *p = arg; 1881 int err; 1882 1883 if (vfd->vfl_type == VFL_TYPE_RADIO) 1884 p->type = V4L2_TUNER_RADIO; 1885 1886 err = ops->vidioc_g_modulator(file, fh, p); 1887 if (!err) 1888 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1889 return err; 1890 } 1891 1892 static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops, 1893 struct file *file, void *fh, void *arg) 1894 { 1895 struct video_device *vfd = video_devdata(file); 1896 struct v4l2_modulator *p = arg; 1897 1898 if (vfd->vfl_type == VFL_TYPE_RADIO) 1899 p->type = V4L2_TUNER_RADIO; 1900 1901 return ops->vidioc_s_modulator(file, fh, p); 1902 } 1903 1904 static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops, 1905 struct file *file, void *fh, void *arg) 1906 { 1907 struct video_device *vfd = video_devdata(file); 1908 struct v4l2_frequency *p = arg; 1909 1910 if (vfd->vfl_type == VFL_TYPE_SDR) 1911 p->type = V4L2_TUNER_SDR; 1912 else 1913 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1914 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1915 return ops->vidioc_g_frequency(file, fh, p); 1916 } 1917 1918 static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops, 1919 struct file *file, void *fh, void *arg) 1920 { 1921 struct video_device *vfd = video_devdata(file); 1922 const struct v4l2_frequency *p = arg; 1923 enum v4l2_tuner_type type; 1924 int ret; 1925 1926 ret = v4l_enable_media_source(vfd); 1927 if (ret) 1928 return ret; 1929 if (vfd->vfl_type == VFL_TYPE_SDR) { 1930 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 1931 return -EINVAL; 1932 } else { 1933 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1934 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1935 if (type != p->type) 1936 return -EINVAL; 1937 } 1938 return ops->vidioc_s_frequency(file, fh, p); 1939 } 1940 1941 static int v4l_enumstd(const struct v4l2_ioctl_ops *ops, 1942 struct file *file, void *fh, void *arg) 1943 { 1944 struct video_device *vfd = video_devdata(file); 1945 struct v4l2_standard *p = arg; 1946 1947 return v4l_video_std_enumstd(p, vfd->tvnorms); 1948 } 1949 1950 static int v4l_s_std(const struct v4l2_ioctl_ops *ops, 1951 struct file *file, void *fh, void *arg) 1952 { 1953 struct video_device *vfd = video_devdata(file); 1954 v4l2_std_id id = *(v4l2_std_id *)arg, norm; 1955 int ret; 1956 1957 ret = v4l_enable_media_source(vfd); 1958 if (ret) 1959 return ret; 1960 norm = id & vfd->tvnorms; 1961 if (vfd->tvnorms && !norm) /* Check if std is supported */ 1962 return -EINVAL; 1963 1964 /* Calls the specific handler */ 1965 return ops->vidioc_s_std(file, fh, norm); 1966 } 1967 1968 static int v4l_querystd(const struct v4l2_ioctl_ops *ops, 1969 struct file *file, void *fh, void *arg) 1970 { 1971 struct video_device *vfd = video_devdata(file); 1972 v4l2_std_id *p = arg; 1973 int ret; 1974 1975 ret = v4l_enable_media_source(vfd); 1976 if (ret) 1977 return ret; 1978 /* 1979 * If no signal is detected, then the driver should return 1980 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with 1981 * any standards that do not apply removed. 1982 * 1983 * This means that tuners, audio and video decoders can join 1984 * their efforts to improve the standards detection. 1985 */ 1986 *p = vfd->tvnorms; 1987 return ops->vidioc_querystd(file, fh, arg); 1988 } 1989 1990 static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops, 1991 struct file *file, void *fh, void *arg) 1992 { 1993 struct video_device *vfd = video_devdata(file); 1994 struct v4l2_hw_freq_seek *p = arg; 1995 enum v4l2_tuner_type type; 1996 int ret; 1997 1998 ret = v4l_enable_media_source(vfd); 1999 if (ret) 2000 return ret; 2001 /* s_hw_freq_seek is not supported for SDR for now */ 2002 if (vfd->vfl_type == VFL_TYPE_SDR) 2003 return -EINVAL; 2004 2005 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2006 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2007 if (p->type != type) 2008 return -EINVAL; 2009 return ops->vidioc_s_hw_freq_seek(file, fh, p); 2010 } 2011 2012 static int v4l_overlay(const struct v4l2_ioctl_ops *ops, 2013 struct file *file, void *fh, void *arg) 2014 { 2015 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg); 2016 } 2017 2018 static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops, 2019 struct file *file, void *fh, void *arg) 2020 { 2021 struct v4l2_requestbuffers *p = arg; 2022 int ret = check_fmt(file, p->type); 2023 2024 if (ret) 2025 return ret; 2026 2027 CLEAR_AFTER_FIELD(p, flags); 2028 2029 return ops->vidioc_reqbufs(file, fh, p); 2030 } 2031 2032 static int v4l_querybuf(const struct v4l2_ioctl_ops *ops, 2033 struct file *file, void *fh, void *arg) 2034 { 2035 struct v4l2_buffer *p = arg; 2036 int ret = check_fmt(file, p->type); 2037 2038 return ret ? ret : ops->vidioc_querybuf(file, fh, p); 2039 } 2040 2041 static int v4l_qbuf(const struct v4l2_ioctl_ops *ops, 2042 struct file *file, void *fh, void *arg) 2043 { 2044 struct v4l2_buffer *p = arg; 2045 int ret = check_fmt(file, p->type); 2046 2047 return ret ? ret : ops->vidioc_qbuf(file, fh, p); 2048 } 2049 2050 static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops, 2051 struct file *file, void *fh, void *arg) 2052 { 2053 struct v4l2_buffer *p = arg; 2054 int ret = check_fmt(file, p->type); 2055 2056 return ret ? ret : ops->vidioc_dqbuf(file, fh, p); 2057 } 2058 2059 static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops, 2060 struct file *file, void *fh, void *arg) 2061 { 2062 struct v4l2_create_buffers *create = arg; 2063 int ret = check_fmt(file, create->format.type); 2064 2065 if (ret) 2066 return ret; 2067 2068 CLEAR_AFTER_FIELD(create, flags); 2069 2070 v4l_sanitize_format(&create->format); 2071 2072 ret = ops->vidioc_create_bufs(file, fh, create); 2073 2074 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 2075 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT) 2076 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 2077 2078 return ret; 2079 } 2080 2081 static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops, 2082 struct file *file, void *fh, void *arg) 2083 { 2084 struct v4l2_buffer *b = arg; 2085 int ret = check_fmt(file, b->type); 2086 2087 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b); 2088 } 2089 2090 static int v4l_g_parm(const struct v4l2_ioctl_ops *ops, 2091 struct file *file, void *fh, void *arg) 2092 { 2093 struct v4l2_streamparm *p = arg; 2094 v4l2_std_id std; 2095 int ret = check_fmt(file, p->type); 2096 2097 if (ret) 2098 return ret; 2099 if (ops->vidioc_g_parm) 2100 return ops->vidioc_g_parm(file, fh, p); 2101 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && 2102 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2103 return -EINVAL; 2104 p->parm.capture.readbuffers = 2; 2105 ret = ops->vidioc_g_std(file, fh, &std); 2106 if (ret == 0) 2107 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe); 2108 return ret; 2109 } 2110 2111 static int v4l_s_parm(const struct v4l2_ioctl_ops *ops, 2112 struct file *file, void *fh, void *arg) 2113 { 2114 struct v4l2_streamparm *p = arg; 2115 int ret = check_fmt(file, p->type); 2116 2117 if (ret) 2118 return ret; 2119 2120 /* Note: extendedmode is never used in drivers */ 2121 if (V4L2_TYPE_IS_OUTPUT(p->type)) { 2122 memset(p->parm.output.reserved, 0, 2123 sizeof(p->parm.output.reserved)); 2124 p->parm.output.extendedmode = 0; 2125 p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY; 2126 } else { 2127 memset(p->parm.capture.reserved, 0, 2128 sizeof(p->parm.capture.reserved)); 2129 p->parm.capture.extendedmode = 0; 2130 p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY; 2131 } 2132 return ops->vidioc_s_parm(file, fh, p); 2133 } 2134 2135 static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops, 2136 struct file *file, void *fh, void *arg) 2137 { 2138 struct video_device *vfd = video_devdata(file); 2139 struct v4l2_queryctrl *p = arg; 2140 struct v4l2_fh *vfh = 2141 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2142 2143 if (vfh && vfh->ctrl_handler) 2144 return v4l2_queryctrl(vfh->ctrl_handler, p); 2145 if (vfd->ctrl_handler) 2146 return v4l2_queryctrl(vfd->ctrl_handler, p); 2147 if (ops->vidioc_queryctrl) 2148 return ops->vidioc_queryctrl(file, fh, p); 2149 return -ENOTTY; 2150 } 2151 2152 static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops, 2153 struct file *file, void *fh, void *arg) 2154 { 2155 struct video_device *vfd = video_devdata(file); 2156 struct v4l2_query_ext_ctrl *p = arg; 2157 struct v4l2_fh *vfh = 2158 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2159 2160 if (vfh && vfh->ctrl_handler) 2161 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p); 2162 if (vfd->ctrl_handler) 2163 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p); 2164 if (ops->vidioc_query_ext_ctrl) 2165 return ops->vidioc_query_ext_ctrl(file, fh, p); 2166 return -ENOTTY; 2167 } 2168 2169 static int v4l_querymenu(const struct v4l2_ioctl_ops *ops, 2170 struct file *file, void *fh, void *arg) 2171 { 2172 struct video_device *vfd = video_devdata(file); 2173 struct v4l2_querymenu *p = arg; 2174 struct v4l2_fh *vfh = 2175 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2176 2177 if (vfh && vfh->ctrl_handler) 2178 return v4l2_querymenu(vfh->ctrl_handler, p); 2179 if (vfd->ctrl_handler) 2180 return v4l2_querymenu(vfd->ctrl_handler, p); 2181 if (ops->vidioc_querymenu) 2182 return ops->vidioc_querymenu(file, fh, p); 2183 return -ENOTTY; 2184 } 2185 2186 static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops, 2187 struct file *file, void *fh, void *arg) 2188 { 2189 struct video_device *vfd = video_devdata(file); 2190 struct v4l2_control *p = arg; 2191 struct v4l2_fh *vfh = 2192 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2193 struct v4l2_ext_controls ctrls; 2194 struct v4l2_ext_control ctrl; 2195 2196 if (vfh && vfh->ctrl_handler) 2197 return v4l2_g_ctrl(vfh->ctrl_handler, p); 2198 if (vfd->ctrl_handler) 2199 return v4l2_g_ctrl(vfd->ctrl_handler, p); 2200 if (ops->vidioc_g_ctrl) 2201 return ops->vidioc_g_ctrl(file, fh, p); 2202 if (ops->vidioc_g_ext_ctrls == NULL) 2203 return -ENOTTY; 2204 2205 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2206 ctrls.count = 1; 2207 ctrls.controls = &ctrl; 2208 ctrl.id = p->id; 2209 ctrl.value = p->value; 2210 if (check_ext_ctrls(&ctrls, VIDIOC_G_CTRL)) { 2211 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls); 2212 2213 if (ret == 0) 2214 p->value = ctrl.value; 2215 return ret; 2216 } 2217 return -EINVAL; 2218 } 2219 2220 static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, 2221 struct file *file, void *fh, void *arg) 2222 { 2223 struct video_device *vfd = video_devdata(file); 2224 struct v4l2_control *p = arg; 2225 struct v4l2_fh *vfh = 2226 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2227 struct v4l2_ext_controls ctrls; 2228 struct v4l2_ext_control ctrl; 2229 int ret; 2230 2231 if (vfh && vfh->ctrl_handler) 2232 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p); 2233 if (vfd->ctrl_handler) 2234 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p); 2235 if (ops->vidioc_s_ctrl) 2236 return ops->vidioc_s_ctrl(file, fh, p); 2237 if (ops->vidioc_s_ext_ctrls == NULL) 2238 return -ENOTTY; 2239 2240 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2241 ctrls.count = 1; 2242 ctrls.controls = &ctrl; 2243 ctrl.id = p->id; 2244 ctrl.value = p->value; 2245 if (!check_ext_ctrls(&ctrls, VIDIOC_S_CTRL)) 2246 return -EINVAL; 2247 ret = ops->vidioc_s_ext_ctrls(file, fh, &ctrls); 2248 p->value = ctrl.value; 2249 return ret; 2250 } 2251 2252 static int v4l_g_ext_ctrls(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_ext_controls *p = arg; 2257 struct v4l2_fh *vfh = 2258 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2259 2260 p->error_idx = p->count; 2261 if (vfh && vfh->ctrl_handler) 2262 return v4l2_g_ext_ctrls(vfh->ctrl_handler, 2263 vfd, vfd->v4l2_dev->mdev, p); 2264 if (vfd->ctrl_handler) 2265 return v4l2_g_ext_ctrls(vfd->ctrl_handler, 2266 vfd, vfd->v4l2_dev->mdev, p); 2267 if (ops->vidioc_g_ext_ctrls == NULL) 2268 return -ENOTTY; 2269 return check_ext_ctrls(p, VIDIOC_G_EXT_CTRLS) ? 2270 ops->vidioc_g_ext_ctrls(file, fh, p) : -EINVAL; 2271 } 2272 2273 static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2274 struct file *file, void *fh, void *arg) 2275 { 2276 struct video_device *vfd = video_devdata(file); 2277 struct v4l2_ext_controls *p = arg; 2278 struct v4l2_fh *vfh = 2279 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2280 2281 p->error_idx = p->count; 2282 if (vfh && vfh->ctrl_handler) 2283 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, 2284 vfd, vfd->v4l2_dev->mdev, p); 2285 if (vfd->ctrl_handler) 2286 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, 2287 vfd, vfd->v4l2_dev->mdev, p); 2288 if (ops->vidioc_s_ext_ctrls == NULL) 2289 return -ENOTTY; 2290 return check_ext_ctrls(p, VIDIOC_S_EXT_CTRLS) ? 2291 ops->vidioc_s_ext_ctrls(file, fh, p) : -EINVAL; 2292 } 2293 2294 static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2295 struct file *file, void *fh, void *arg) 2296 { 2297 struct video_device *vfd = video_devdata(file); 2298 struct v4l2_ext_controls *p = arg; 2299 struct v4l2_fh *vfh = 2300 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2301 2302 p->error_idx = p->count; 2303 if (vfh && vfh->ctrl_handler) 2304 return v4l2_try_ext_ctrls(vfh->ctrl_handler, 2305 vfd, vfd->v4l2_dev->mdev, p); 2306 if (vfd->ctrl_handler) 2307 return v4l2_try_ext_ctrls(vfd->ctrl_handler, 2308 vfd, vfd->v4l2_dev->mdev, p); 2309 if (ops->vidioc_try_ext_ctrls == NULL) 2310 return -ENOTTY; 2311 return check_ext_ctrls(p, VIDIOC_TRY_EXT_CTRLS) ? 2312 ops->vidioc_try_ext_ctrls(file, fh, p) : -EINVAL; 2313 } 2314 2315 /* 2316 * The selection API specified originally that the _MPLANE buffer types 2317 * shouldn't be used. The reasons for this are lost in the mists of time 2318 * (or just really crappy memories). Regardless, this is really annoying 2319 * for userspace. So to keep things simple we map _MPLANE buffer types 2320 * to their 'regular' counterparts before calling the driver. And we 2321 * restore it afterwards. This way applications can use either buffer 2322 * type and drivers don't need to check for both. 2323 */ 2324 static int v4l_g_selection(const struct v4l2_ioctl_ops *ops, 2325 struct file *file, void *fh, void *arg) 2326 { 2327 struct v4l2_selection *p = arg; 2328 u32 old_type = p->type; 2329 int ret; 2330 2331 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2332 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2333 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2334 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2335 ret = ops->vidioc_g_selection(file, fh, p); 2336 p->type = old_type; 2337 return ret; 2338 } 2339 2340 static int v4l_s_selection(const struct v4l2_ioctl_ops *ops, 2341 struct file *file, void *fh, void *arg) 2342 { 2343 struct v4l2_selection *p = arg; 2344 u32 old_type = p->type; 2345 int ret; 2346 2347 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2348 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2349 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2350 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2351 ret = ops->vidioc_s_selection(file, fh, p); 2352 p->type = old_type; 2353 return ret; 2354 } 2355 2356 static int v4l_g_crop(const struct v4l2_ioctl_ops *ops, 2357 struct file *file, void *fh, void *arg) 2358 { 2359 struct video_device *vfd = video_devdata(file); 2360 struct v4l2_crop *p = arg; 2361 struct v4l2_selection s = { 2362 .type = p->type, 2363 }; 2364 int ret; 2365 2366 /* simulate capture crop using selection api */ 2367 2368 /* crop means compose for output devices */ 2369 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2370 s.target = V4L2_SEL_TGT_COMPOSE; 2371 else 2372 s.target = V4L2_SEL_TGT_CROP; 2373 2374 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2375 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2376 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2377 2378 ret = v4l_g_selection(ops, file, fh, &s); 2379 2380 /* copying results to old structure on success */ 2381 if (!ret) 2382 p->c = s.r; 2383 return ret; 2384 } 2385 2386 static int v4l_s_crop(const struct v4l2_ioctl_ops *ops, 2387 struct file *file, void *fh, void *arg) 2388 { 2389 struct video_device *vfd = video_devdata(file); 2390 struct v4l2_crop *p = arg; 2391 struct v4l2_selection s = { 2392 .type = p->type, 2393 .r = p->c, 2394 }; 2395 2396 /* simulate capture crop using selection api */ 2397 2398 /* crop means compose for output devices */ 2399 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2400 s.target = V4L2_SEL_TGT_COMPOSE; 2401 else 2402 s.target = V4L2_SEL_TGT_CROP; 2403 2404 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2405 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2406 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2407 2408 return v4l_s_selection(ops, file, fh, &s); 2409 } 2410 2411 static int v4l_cropcap(const struct v4l2_ioctl_ops *ops, 2412 struct file *file, void *fh, void *arg) 2413 { 2414 struct video_device *vfd = video_devdata(file); 2415 struct v4l2_cropcap *p = arg; 2416 struct v4l2_selection s = { .type = p->type }; 2417 int ret = 0; 2418 2419 /* setting trivial pixelaspect */ 2420 p->pixelaspect.numerator = 1; 2421 p->pixelaspect.denominator = 1; 2422 2423 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2424 s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2425 else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2426 s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2427 2428 /* 2429 * The determine_valid_ioctls() call already should ensure 2430 * that this can never happen, but just in case... 2431 */ 2432 if (WARN_ON(!ops->vidioc_g_selection)) 2433 return -ENOTTY; 2434 2435 if (ops->vidioc_g_pixelaspect) 2436 ret = ops->vidioc_g_pixelaspect(file, fh, s.type, 2437 &p->pixelaspect); 2438 2439 /* 2440 * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the 2441 * square pixel aspect ratio in that case. 2442 */ 2443 if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD) 2444 return ret; 2445 2446 /* Use g_selection() to fill in the bounds and defrect rectangles */ 2447 2448 /* obtaining bounds */ 2449 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2450 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS; 2451 else 2452 s.target = V4L2_SEL_TGT_CROP_BOUNDS; 2453 2454 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2455 s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ? 2456 V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS; 2457 2458 ret = v4l_g_selection(ops, file, fh, &s); 2459 if (ret) 2460 return ret; 2461 p->bounds = s.r; 2462 2463 /* obtaining defrect */ 2464 if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS) 2465 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT; 2466 else 2467 s.target = V4L2_SEL_TGT_CROP_DEFAULT; 2468 2469 ret = v4l_g_selection(ops, file, fh, &s); 2470 if (ret) 2471 return ret; 2472 p->defrect = s.r; 2473 2474 return 0; 2475 } 2476 2477 static int v4l_log_status(const struct v4l2_ioctl_ops *ops, 2478 struct file *file, void *fh, void *arg) 2479 { 2480 struct video_device *vfd = video_devdata(file); 2481 int ret; 2482 2483 if (vfd->v4l2_dev) 2484 pr_info("%s: ================= START STATUS =================\n", 2485 vfd->v4l2_dev->name); 2486 ret = ops->vidioc_log_status(file, fh); 2487 if (vfd->v4l2_dev) 2488 pr_info("%s: ================== END STATUS ==================\n", 2489 vfd->v4l2_dev->name); 2490 return ret; 2491 } 2492 2493 static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops, 2494 struct file *file, void *fh, void *arg) 2495 { 2496 #ifdef CONFIG_VIDEO_ADV_DEBUG 2497 struct v4l2_dbg_register *p = arg; 2498 struct video_device *vfd = video_devdata(file); 2499 struct v4l2_subdev *sd; 2500 int idx = 0; 2501 2502 if (!capable(CAP_SYS_ADMIN)) 2503 return -EPERM; 2504 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2505 if (vfd->v4l2_dev == NULL) 2506 return -EINVAL; 2507 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2508 if (p->match.addr == idx++) 2509 return v4l2_subdev_call(sd, core, g_register, p); 2510 return -EINVAL; 2511 } 2512 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2513 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2514 return ops->vidioc_g_register(file, fh, p); 2515 return -EINVAL; 2516 #else 2517 return -ENOTTY; 2518 #endif 2519 } 2520 2521 static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops, 2522 struct file *file, void *fh, void *arg) 2523 { 2524 #ifdef CONFIG_VIDEO_ADV_DEBUG 2525 const struct v4l2_dbg_register *p = arg; 2526 struct video_device *vfd = video_devdata(file); 2527 struct v4l2_subdev *sd; 2528 int idx = 0; 2529 2530 if (!capable(CAP_SYS_ADMIN)) 2531 return -EPERM; 2532 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2533 if (vfd->v4l2_dev == NULL) 2534 return -EINVAL; 2535 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2536 if (p->match.addr == idx++) 2537 return v4l2_subdev_call(sd, core, s_register, p); 2538 return -EINVAL; 2539 } 2540 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2541 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2542 return ops->vidioc_s_register(file, fh, p); 2543 return -EINVAL; 2544 #else 2545 return -ENOTTY; 2546 #endif 2547 } 2548 2549 static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops, 2550 struct file *file, void *fh, void *arg) 2551 { 2552 #ifdef CONFIG_VIDEO_ADV_DEBUG 2553 struct video_device *vfd = video_devdata(file); 2554 struct v4l2_dbg_chip_info *p = arg; 2555 struct v4l2_subdev *sd; 2556 int idx = 0; 2557 2558 switch (p->match.type) { 2559 case V4L2_CHIP_MATCH_BRIDGE: 2560 if (ops->vidioc_s_register) 2561 p->flags |= V4L2_CHIP_FL_WRITABLE; 2562 if (ops->vidioc_g_register) 2563 p->flags |= V4L2_CHIP_FL_READABLE; 2564 strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name)); 2565 if (ops->vidioc_g_chip_info) 2566 return ops->vidioc_g_chip_info(file, fh, arg); 2567 if (p->match.addr) 2568 return -EINVAL; 2569 return 0; 2570 2571 case V4L2_CHIP_MATCH_SUBDEV: 2572 if (vfd->v4l2_dev == NULL) 2573 break; 2574 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) { 2575 if (p->match.addr != idx++) 2576 continue; 2577 if (sd->ops->core && sd->ops->core->s_register) 2578 p->flags |= V4L2_CHIP_FL_WRITABLE; 2579 if (sd->ops->core && sd->ops->core->g_register) 2580 p->flags |= V4L2_CHIP_FL_READABLE; 2581 strscpy(p->name, sd->name, sizeof(p->name)); 2582 return 0; 2583 } 2584 break; 2585 } 2586 return -EINVAL; 2587 #else 2588 return -ENOTTY; 2589 #endif 2590 } 2591 2592 static int v4l_dqevent(const struct v4l2_ioctl_ops *ops, 2593 struct file *file, void *fh, void *arg) 2594 { 2595 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK); 2596 } 2597 2598 static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops, 2599 struct file *file, void *fh, void *arg) 2600 { 2601 return ops->vidioc_subscribe_event(fh, arg); 2602 } 2603 2604 static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops, 2605 struct file *file, void *fh, void *arg) 2606 { 2607 return ops->vidioc_unsubscribe_event(fh, arg); 2608 } 2609 2610 static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops, 2611 struct file *file, void *fh, void *arg) 2612 { 2613 struct v4l2_sliced_vbi_cap *p = arg; 2614 int ret = check_fmt(file, p->type); 2615 2616 if (ret) 2617 return ret; 2618 2619 /* Clear up to type, everything after type is zeroed already */ 2620 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type)); 2621 2622 return ops->vidioc_g_sliced_vbi_cap(file, fh, p); 2623 } 2624 2625 static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops, 2626 struct file *file, void *fh, void *arg) 2627 { 2628 struct video_device *vfd = video_devdata(file); 2629 struct v4l2_frequency_band *p = arg; 2630 enum v4l2_tuner_type type; 2631 int err; 2632 2633 if (vfd->vfl_type == VFL_TYPE_SDR) { 2634 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 2635 return -EINVAL; 2636 type = p->type; 2637 } else { 2638 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2639 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2640 if (type != p->type) 2641 return -EINVAL; 2642 } 2643 if (ops->vidioc_enum_freq_bands) { 2644 err = ops->vidioc_enum_freq_bands(file, fh, p); 2645 if (err != -ENOTTY) 2646 return err; 2647 } 2648 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) { 2649 struct v4l2_tuner t = { 2650 .index = p->tuner, 2651 .type = type, 2652 }; 2653 2654 if (p->index) 2655 return -EINVAL; 2656 err = ops->vidioc_g_tuner(file, fh, &t); 2657 if (err) 2658 return err; 2659 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2660 p->rangelow = t.rangelow; 2661 p->rangehigh = t.rangehigh; 2662 p->modulation = (type == V4L2_TUNER_RADIO) ? 2663 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2664 return 0; 2665 } 2666 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) { 2667 struct v4l2_modulator m = { 2668 .index = p->tuner, 2669 }; 2670 2671 if (type != V4L2_TUNER_RADIO) 2672 return -EINVAL; 2673 if (p->index) 2674 return -EINVAL; 2675 err = ops->vidioc_g_modulator(file, fh, &m); 2676 if (err) 2677 return err; 2678 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2679 p->rangelow = m.rangelow; 2680 p->rangehigh = m.rangehigh; 2681 p->modulation = (type == V4L2_TUNER_RADIO) ? 2682 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2683 return 0; 2684 } 2685 return -ENOTTY; 2686 } 2687 2688 struct v4l2_ioctl_info { 2689 unsigned int ioctl; 2690 u32 flags; 2691 const char * const name; 2692 int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file, 2693 void *fh, void *p); 2694 void (*debug)(const void *arg, bool write_only); 2695 }; 2696 2697 /* This control needs a priority check */ 2698 #define INFO_FL_PRIO (1 << 0) 2699 /* This control can be valid if the filehandle passes a control handler. */ 2700 #define INFO_FL_CTRL (1 << 1) 2701 /* Queuing ioctl */ 2702 #define INFO_FL_QUEUE (1 << 2) 2703 /* Always copy back result, even on error */ 2704 #define INFO_FL_ALWAYS_COPY (1 << 3) 2705 /* Zero struct from after the field to the end */ 2706 #define INFO_FL_CLEAR(v4l2_struct, field) \ 2707 ((offsetof(struct v4l2_struct, field) + \ 2708 sizeof_field(struct v4l2_struct, field)) << 16) 2709 #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16) 2710 2711 #define DEFINE_V4L_STUB_FUNC(_vidioc) \ 2712 static int v4l_stub_ ## _vidioc( \ 2713 const struct v4l2_ioctl_ops *ops, \ 2714 struct file *file, void *fh, void *p) \ 2715 { \ 2716 return ops->vidioc_ ## _vidioc(file, fh, p); \ 2717 } 2718 2719 #define IOCTL_INFO(_ioctl, _func, _debug, _flags) \ 2720 [_IOC_NR(_ioctl)] = { \ 2721 .ioctl = _ioctl, \ 2722 .flags = _flags, \ 2723 .name = #_ioctl, \ 2724 .func = _func, \ 2725 .debug = _debug, \ 2726 } 2727 2728 DEFINE_V4L_STUB_FUNC(g_fbuf) 2729 DEFINE_V4L_STUB_FUNC(s_fbuf) 2730 DEFINE_V4L_STUB_FUNC(expbuf) 2731 DEFINE_V4L_STUB_FUNC(g_std) 2732 DEFINE_V4L_STUB_FUNC(g_audio) 2733 DEFINE_V4L_STUB_FUNC(s_audio) 2734 DEFINE_V4L_STUB_FUNC(g_edid) 2735 DEFINE_V4L_STUB_FUNC(s_edid) 2736 DEFINE_V4L_STUB_FUNC(g_audout) 2737 DEFINE_V4L_STUB_FUNC(s_audout) 2738 DEFINE_V4L_STUB_FUNC(g_jpegcomp) 2739 DEFINE_V4L_STUB_FUNC(s_jpegcomp) 2740 DEFINE_V4L_STUB_FUNC(enumaudio) 2741 DEFINE_V4L_STUB_FUNC(enumaudout) 2742 DEFINE_V4L_STUB_FUNC(enum_framesizes) 2743 DEFINE_V4L_STUB_FUNC(enum_frameintervals) 2744 DEFINE_V4L_STUB_FUNC(g_enc_index) 2745 DEFINE_V4L_STUB_FUNC(encoder_cmd) 2746 DEFINE_V4L_STUB_FUNC(try_encoder_cmd) 2747 DEFINE_V4L_STUB_FUNC(decoder_cmd) 2748 DEFINE_V4L_STUB_FUNC(try_decoder_cmd) 2749 DEFINE_V4L_STUB_FUNC(s_dv_timings) 2750 DEFINE_V4L_STUB_FUNC(g_dv_timings) 2751 DEFINE_V4L_STUB_FUNC(enum_dv_timings) 2752 DEFINE_V4L_STUB_FUNC(query_dv_timings) 2753 DEFINE_V4L_STUB_FUNC(dv_timings_cap) 2754 2755 static const struct v4l2_ioctl_info v4l2_ioctls[] = { 2756 IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0), 2757 IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, 0), 2758 IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0), 2759 IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO), 2760 IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2761 IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)), 2762 IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0), 2763 IOCTL_INFO(VIDIOC_S_FBUF, v4l_stub_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO), 2764 IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO), 2765 IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE), 2766 IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)), 2767 IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE), 2768 IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2769 IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2770 IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)), 2771 IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO), 2772 IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0), 2773 IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO), 2774 IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)), 2775 IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)), 2776 IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)), 2777 IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL), 2778 IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)), 2779 IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO), 2780 IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0), 2781 IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO), 2782 IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)), 2783 IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)), 2784 IOCTL_INFO(VIDIOC_G_INPUT, v4l_g_input, v4l_print_u32, 0), 2785 IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO), 2786 IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY), 2787 IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY), 2788 IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_g_output, v4l_print_u32, 0), 2789 IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO), 2790 IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)), 2791 IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0), 2792 IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO), 2793 IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)), 2794 IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO), 2795 IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)), 2796 IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO), 2797 IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)), 2798 IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)), 2799 IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO), 2800 IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)), 2801 IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)), 2802 IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0), 2803 IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO), 2804 IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0), 2805 IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0), 2806 IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)), 2807 IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)), 2808 IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0), 2809 IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO), 2810 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)), 2811 IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0), 2812 IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL), 2813 IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL), 2814 IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL), 2815 IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)), 2816 IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)), 2817 IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0), 2818 IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2819 IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2820 IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO), 2821 IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0), 2822 IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0), 2823 IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0), 2824 IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO), 2825 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)), 2826 IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0), 2827 IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0), 2828 IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0), 2829 IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0), 2830 IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2831 IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE), 2832 IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)), 2833 IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY), 2834 IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)), 2835 IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0), 2836 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)), 2837 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)), 2838 }; 2839 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) 2840 2841 static bool v4l2_is_known_ioctl(unsigned int cmd) 2842 { 2843 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2844 return false; 2845 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd; 2846 } 2847 2848 static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, 2849 struct v4l2_fh *vfh, unsigned int cmd, 2850 void *arg) 2851 { 2852 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2853 return vdev->lock; 2854 if (vfh && vfh->m2m_ctx && 2855 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) { 2856 if (vfh->m2m_ctx->q_lock) 2857 return vfh->m2m_ctx->q_lock; 2858 } 2859 if (vdev->queue && vdev->queue->lock && 2860 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) 2861 return vdev->queue->lock; 2862 return vdev->lock; 2863 } 2864 2865 /* Common ioctl debug function. This function can be used by 2866 external ioctl messages as well as internal V4L ioctl */ 2867 void v4l_printk_ioctl(const char *prefix, unsigned int cmd) 2868 { 2869 const char *dir, *type; 2870 2871 if (prefix) 2872 printk(KERN_DEBUG "%s: ", prefix); 2873 2874 switch (_IOC_TYPE(cmd)) { 2875 case 'd': 2876 type = "v4l2_int"; 2877 break; 2878 case 'V': 2879 if (_IOC_NR(cmd) >= V4L2_IOCTLS) { 2880 type = "v4l2"; 2881 break; 2882 } 2883 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name); 2884 return; 2885 default: 2886 type = "unknown"; 2887 break; 2888 } 2889 2890 switch (_IOC_DIR(cmd)) { 2891 case _IOC_NONE: dir = "--"; break; 2892 case _IOC_READ: dir = "r-"; break; 2893 case _IOC_WRITE: dir = "-w"; break; 2894 case _IOC_READ | _IOC_WRITE: dir = "rw"; break; 2895 default: dir = "*ERR*"; break; 2896 } 2897 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)", 2898 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd); 2899 } 2900 EXPORT_SYMBOL(v4l_printk_ioctl); 2901 2902 static long __video_do_ioctl(struct file *file, 2903 unsigned int cmd, void *arg) 2904 { 2905 struct video_device *vfd = video_devdata(file); 2906 struct mutex *req_queue_lock = NULL; 2907 struct mutex *lock; /* ioctl serialization mutex */ 2908 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 2909 bool write_only = false; 2910 struct v4l2_ioctl_info default_info; 2911 const struct v4l2_ioctl_info *info; 2912 void *fh = file->private_data; 2913 struct v4l2_fh *vfh = NULL; 2914 int dev_debug = vfd->dev_debug; 2915 long ret = -ENOTTY; 2916 2917 if (ops == NULL) { 2918 pr_warn("%s: has no ioctl_ops.\n", 2919 video_device_node_name(vfd)); 2920 return ret; 2921 } 2922 2923 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 2924 vfh = file->private_data; 2925 2926 /* 2927 * We need to serialize streamon/off with queueing new requests. 2928 * These ioctls may trigger the cancellation of a streaming 2929 * operation, and that should not be mixed with queueing a new 2930 * request at the same time. 2931 */ 2932 if (v4l2_device_supports_requests(vfd->v4l2_dev) && 2933 (cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF)) { 2934 req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex; 2935 2936 if (mutex_lock_interruptible(req_queue_lock)) 2937 return -ERESTARTSYS; 2938 } 2939 2940 lock = v4l2_ioctl_get_lock(vfd, vfh, cmd, arg); 2941 2942 if (lock && mutex_lock_interruptible(lock)) { 2943 if (req_queue_lock) 2944 mutex_unlock(req_queue_lock); 2945 return -ERESTARTSYS; 2946 } 2947 2948 if (!video_is_registered(vfd)) { 2949 ret = -ENODEV; 2950 goto unlock; 2951 } 2952 2953 if (v4l2_is_known_ioctl(cmd)) { 2954 info = &v4l2_ioctls[_IOC_NR(cmd)]; 2955 2956 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) && 2957 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler)) 2958 goto done; 2959 2960 if (vfh && (info->flags & INFO_FL_PRIO)) { 2961 ret = v4l2_prio_check(vfd->prio, vfh->prio); 2962 if (ret) 2963 goto done; 2964 } 2965 } else { 2966 default_info.ioctl = cmd; 2967 default_info.flags = 0; 2968 default_info.debug = v4l_print_default; 2969 info = &default_info; 2970 } 2971 2972 write_only = _IOC_DIR(cmd) == _IOC_WRITE; 2973 if (info != &default_info) { 2974 ret = info->func(ops, file, fh, arg); 2975 } else if (!ops->vidioc_default) { 2976 ret = -ENOTTY; 2977 } else { 2978 ret = ops->vidioc_default(file, fh, 2979 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0, 2980 cmd, arg); 2981 } 2982 2983 done: 2984 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) { 2985 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) && 2986 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF)) 2987 goto unlock; 2988 2989 v4l_printk_ioctl(video_device_node_name(vfd), cmd); 2990 if (ret < 0) 2991 pr_cont(": error %ld", ret); 2992 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG)) 2993 pr_cont("\n"); 2994 else if (_IOC_DIR(cmd) == _IOC_NONE) 2995 info->debug(arg, write_only); 2996 else { 2997 pr_cont(": "); 2998 info->debug(arg, write_only); 2999 } 3000 } 3001 3002 unlock: 3003 if (lock) 3004 mutex_unlock(lock); 3005 if (req_queue_lock) 3006 mutex_unlock(req_queue_lock); 3007 return ret; 3008 } 3009 3010 static int check_array_args(unsigned int cmd, void *parg, size_t *array_size, 3011 void __user **user_ptr, void ***kernel_ptr) 3012 { 3013 int ret = 0; 3014 3015 switch (cmd) { 3016 case VIDIOC_PREPARE_BUF: 3017 case VIDIOC_QUERYBUF: 3018 case VIDIOC_QBUF: 3019 case VIDIOC_DQBUF: { 3020 struct v4l2_buffer *buf = parg; 3021 3022 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) { 3023 if (buf->length > VIDEO_MAX_PLANES) { 3024 ret = -EINVAL; 3025 break; 3026 } 3027 *user_ptr = (void __user *)buf->m.planes; 3028 *kernel_ptr = (void **)&buf->m.planes; 3029 *array_size = sizeof(struct v4l2_plane) * buf->length; 3030 ret = 1; 3031 } 3032 break; 3033 } 3034 3035 case VIDIOC_G_EDID: 3036 case VIDIOC_S_EDID: { 3037 struct v4l2_edid *edid = parg; 3038 3039 if (edid->blocks) { 3040 if (edid->blocks > 256) { 3041 ret = -EINVAL; 3042 break; 3043 } 3044 *user_ptr = (void __user *)edid->edid; 3045 *kernel_ptr = (void **)&edid->edid; 3046 *array_size = edid->blocks * 128; 3047 ret = 1; 3048 } 3049 break; 3050 } 3051 3052 case VIDIOC_S_EXT_CTRLS: 3053 case VIDIOC_G_EXT_CTRLS: 3054 case VIDIOC_TRY_EXT_CTRLS: { 3055 struct v4l2_ext_controls *ctrls = parg; 3056 3057 if (ctrls->count != 0) { 3058 if (ctrls->count > V4L2_CID_MAX_CTRLS) { 3059 ret = -EINVAL; 3060 break; 3061 } 3062 *user_ptr = (void __user *)ctrls->controls; 3063 *kernel_ptr = (void **)&ctrls->controls; 3064 *array_size = sizeof(struct v4l2_ext_control) 3065 * ctrls->count; 3066 ret = 1; 3067 } 3068 break; 3069 } 3070 case VIDIOC_G_FMT: 3071 case VIDIOC_S_FMT: 3072 case VIDIOC_TRY_FMT: { 3073 struct v4l2_format *fmt = parg; 3074 3075 if (fmt->type != V4L2_BUF_TYPE_VIDEO_OVERLAY && 3076 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY) 3077 break; 3078 if (fmt->fmt.win.clipcount > 2048) 3079 return -EINVAL; 3080 if (!fmt->fmt.win.clipcount) 3081 break; 3082 3083 *user_ptr = (void __user *)fmt->fmt.win.clips; 3084 *kernel_ptr = (void **)&fmt->fmt.win.clips; 3085 *array_size = sizeof(struct v4l2_clip) 3086 * fmt->fmt.win.clipcount; 3087 3088 ret = 1; 3089 break; 3090 } 3091 } 3092 3093 return ret; 3094 } 3095 3096 static unsigned int video_translate_cmd(unsigned int cmd) 3097 { 3098 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3099 switch (cmd) { 3100 case VIDIOC_DQEVENT_TIME32: 3101 return VIDIOC_DQEVENT; 3102 case VIDIOC_QUERYBUF_TIME32: 3103 return VIDIOC_QUERYBUF; 3104 case VIDIOC_QBUF_TIME32: 3105 return VIDIOC_QBUF; 3106 case VIDIOC_DQBUF_TIME32: 3107 return VIDIOC_DQBUF; 3108 case VIDIOC_PREPARE_BUF_TIME32: 3109 return VIDIOC_PREPARE_BUF; 3110 } 3111 #endif 3112 if (in_compat_syscall()) 3113 return v4l2_compat_translate_cmd(cmd); 3114 3115 return cmd; 3116 } 3117 3118 static int video_get_user(void __user *arg, void *parg, 3119 unsigned int real_cmd, unsigned int cmd, 3120 bool *always_copy) 3121 { 3122 unsigned int n = _IOC_SIZE(real_cmd); 3123 int err = 0; 3124 3125 if (!(_IOC_DIR(cmd) & _IOC_WRITE)) { 3126 /* read-only ioctl */ 3127 memset(parg, 0, n); 3128 return 0; 3129 } 3130 3131 /* 3132 * In some cases, only a few fields are used as input, 3133 * i.e. when the app sets "index" and then the driver 3134 * fills in the rest of the structure for the thing 3135 * with that index. We only need to copy up the first 3136 * non-input field. 3137 */ 3138 if (v4l2_is_known_ioctl(real_cmd)) { 3139 u32 flags = v4l2_ioctls[_IOC_NR(real_cmd)].flags; 3140 3141 if (flags & INFO_FL_CLEAR_MASK) 3142 n = (flags & INFO_FL_CLEAR_MASK) >> 16; 3143 *always_copy = flags & INFO_FL_ALWAYS_COPY; 3144 } 3145 3146 if (cmd == real_cmd) { 3147 if (copy_from_user(parg, (void __user *)arg, n)) 3148 err = -EFAULT; 3149 } else if (in_compat_syscall()) { 3150 memset(parg, 0, n); 3151 err = v4l2_compat_get_user(arg, parg, cmd); 3152 } else { 3153 memset(parg, 0, n); 3154 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3155 switch (cmd) { 3156 case VIDIOC_QUERYBUF_TIME32: 3157 case VIDIOC_QBUF_TIME32: 3158 case VIDIOC_DQBUF_TIME32: 3159 case VIDIOC_PREPARE_BUF_TIME32: { 3160 struct v4l2_buffer_time32 vb32; 3161 struct v4l2_buffer *vb = parg; 3162 3163 if (copy_from_user(&vb32, arg, sizeof(vb32))) 3164 return -EFAULT; 3165 3166 *vb = (struct v4l2_buffer) { 3167 .index = vb32.index, 3168 .type = vb32.type, 3169 .bytesused = vb32.bytesused, 3170 .flags = vb32.flags, 3171 .field = vb32.field, 3172 .timestamp.tv_sec = vb32.timestamp.tv_sec, 3173 .timestamp.tv_usec = vb32.timestamp.tv_usec, 3174 .timecode = vb32.timecode, 3175 .sequence = vb32.sequence, 3176 .memory = vb32.memory, 3177 .m.userptr = vb32.m.userptr, 3178 .length = vb32.length, 3179 .request_fd = vb32.request_fd, 3180 }; 3181 break; 3182 } 3183 } 3184 #endif 3185 } 3186 3187 /* zero out anything we don't copy from userspace */ 3188 if (!err && n < _IOC_SIZE(real_cmd)) 3189 memset((u8 *)parg + n, 0, _IOC_SIZE(real_cmd) - n); 3190 return err; 3191 } 3192 3193 static int video_put_user(void __user *arg, void *parg, 3194 unsigned int real_cmd, unsigned int cmd) 3195 { 3196 if (!(_IOC_DIR(cmd) & _IOC_READ)) 3197 return 0; 3198 3199 if (cmd == real_cmd) { 3200 /* Copy results into user buffer */ 3201 if (copy_to_user(arg, parg, _IOC_SIZE(cmd))) 3202 return -EFAULT; 3203 return 0; 3204 } 3205 3206 if (in_compat_syscall()) 3207 return v4l2_compat_put_user(arg, parg, cmd); 3208 3209 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3210 switch (cmd) { 3211 case VIDIOC_DQEVENT_TIME32: { 3212 struct v4l2_event *ev = parg; 3213 struct v4l2_event_time32 ev32; 3214 3215 memset(&ev32, 0, sizeof(ev32)); 3216 3217 ev32.type = ev->type; 3218 ev32.pending = ev->pending; 3219 ev32.sequence = ev->sequence; 3220 ev32.timestamp.tv_sec = ev->timestamp.tv_sec; 3221 ev32.timestamp.tv_nsec = ev->timestamp.tv_nsec; 3222 ev32.id = ev->id; 3223 3224 memcpy(&ev32.u, &ev->u, sizeof(ev->u)); 3225 memcpy(&ev32.reserved, &ev->reserved, sizeof(ev->reserved)); 3226 3227 if (copy_to_user(arg, &ev32, sizeof(ev32))) 3228 return -EFAULT; 3229 break; 3230 } 3231 case VIDIOC_QUERYBUF_TIME32: 3232 case VIDIOC_QBUF_TIME32: 3233 case VIDIOC_DQBUF_TIME32: 3234 case VIDIOC_PREPARE_BUF_TIME32: { 3235 struct v4l2_buffer *vb = parg; 3236 struct v4l2_buffer_time32 vb32; 3237 3238 memset(&vb32, 0, sizeof(vb32)); 3239 3240 vb32.index = vb->index; 3241 vb32.type = vb->type; 3242 vb32.bytesused = vb->bytesused; 3243 vb32.flags = vb->flags; 3244 vb32.field = vb->field; 3245 vb32.timestamp.tv_sec = vb->timestamp.tv_sec; 3246 vb32.timestamp.tv_usec = vb->timestamp.tv_usec; 3247 vb32.timecode = vb->timecode; 3248 vb32.sequence = vb->sequence; 3249 vb32.memory = vb->memory; 3250 vb32.m.userptr = vb->m.userptr; 3251 vb32.length = vb->length; 3252 vb32.request_fd = vb->request_fd; 3253 3254 if (copy_to_user(arg, &vb32, sizeof(vb32))) 3255 return -EFAULT; 3256 break; 3257 } 3258 } 3259 #endif 3260 3261 return 0; 3262 } 3263 3264 long 3265 video_usercopy(struct file *file, unsigned int orig_cmd, unsigned long arg, 3266 v4l2_kioctl func) 3267 { 3268 char sbuf[128]; 3269 void *mbuf = NULL, *array_buf = NULL; 3270 void *parg = (void *)arg; 3271 long err = -EINVAL; 3272 bool has_array_args; 3273 bool always_copy = false; 3274 size_t array_size = 0; 3275 void __user *user_ptr = NULL; 3276 void **kernel_ptr = NULL; 3277 unsigned int cmd = video_translate_cmd(orig_cmd); 3278 const size_t ioc_size = _IOC_SIZE(cmd); 3279 3280 /* Copy arguments into temp kernel buffer */ 3281 if (_IOC_DIR(cmd) != _IOC_NONE) { 3282 if (ioc_size <= sizeof(sbuf)) { 3283 parg = sbuf; 3284 } else { 3285 /* too big to allocate from stack */ 3286 mbuf = kmalloc(ioc_size, GFP_KERNEL); 3287 if (NULL == mbuf) 3288 return -ENOMEM; 3289 parg = mbuf; 3290 } 3291 3292 err = video_get_user((void __user *)arg, parg, cmd, 3293 orig_cmd, &always_copy); 3294 if (err) 3295 goto out; 3296 } 3297 3298 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr); 3299 if (err < 0) 3300 goto out; 3301 has_array_args = err; 3302 3303 if (has_array_args) { 3304 array_buf = kvmalloc(array_size, GFP_KERNEL); 3305 err = -ENOMEM; 3306 if (array_buf == NULL) 3307 goto out_array_args; 3308 err = -EFAULT; 3309 if (in_compat_syscall()) 3310 err = v4l2_compat_get_array_args(file, array_buf, 3311 user_ptr, array_size, 3312 orig_cmd, parg); 3313 else 3314 err = copy_from_user(array_buf, user_ptr, array_size) ? 3315 -EFAULT : 0; 3316 if (err) 3317 goto out_array_args; 3318 *kernel_ptr = array_buf; 3319 } 3320 3321 /* Handles IOCTL */ 3322 err = func(file, cmd, parg); 3323 if (err == -ENOTTY || err == -ENOIOCTLCMD) { 3324 err = -ENOTTY; 3325 goto out; 3326 } 3327 3328 if (err == 0) { 3329 if (cmd == VIDIOC_DQBUF) 3330 trace_v4l2_dqbuf(video_devdata(file)->minor, parg); 3331 else if (cmd == VIDIOC_QBUF) 3332 trace_v4l2_qbuf(video_devdata(file)->minor, parg); 3333 } 3334 3335 if (has_array_args) { 3336 *kernel_ptr = (void __force *)user_ptr; 3337 if (in_compat_syscall()) { 3338 int put_err; 3339 3340 put_err = v4l2_compat_put_array_args(file, user_ptr, 3341 array_buf, 3342 array_size, 3343 orig_cmd, parg); 3344 if (put_err) 3345 err = put_err; 3346 } else if (copy_to_user(user_ptr, array_buf, array_size)) { 3347 err = -EFAULT; 3348 } 3349 goto out_array_args; 3350 } 3351 /* 3352 * Some ioctls can return an error, but still have valid 3353 * results that must be returned. 3354 */ 3355 if (err < 0 && !always_copy) 3356 goto out; 3357 3358 out_array_args: 3359 if (video_put_user((void __user *)arg, parg, cmd, orig_cmd)) 3360 err = -EFAULT; 3361 out: 3362 kvfree(array_buf); 3363 kfree(mbuf); 3364 return err; 3365 } 3366 3367 long video_ioctl2(struct file *file, 3368 unsigned int cmd, unsigned long arg) 3369 { 3370 return video_usercopy(file, cmd, arg, __video_do_ioctl); 3371 } 3372 EXPORT_SYMBOL(video_ioctl2); 3373