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_VP9_FRAME: descr = "VP9 Frame"; break; 1417 case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */ 1418 case V4L2_PIX_FMT_HEVC_SLICE: descr = "HEVC Parsed Slice Data"; break; 1419 case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */ 1420 case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */ 1421 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break; 1422 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break; 1423 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break; 1424 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break; 1425 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break; 1426 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break; 1427 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break; 1428 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break; 1429 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break; 1430 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break; 1431 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break; 1432 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break; 1433 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break; 1434 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break; 1435 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break; 1436 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break; 1437 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break; 1438 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break; 1439 case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break; 1440 default: 1441 if (fmt->description[0]) 1442 return; 1443 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat); 1444 flags = 0; 1445 snprintf(fmt->description, sz, "%p4cc", 1446 &fmt->pixelformat); 1447 break; 1448 } 1449 } 1450 1451 if (descr) 1452 WARN_ON(strscpy(fmt->description, descr, sz) < 0); 1453 fmt->flags |= flags; 1454 } 1455 1456 static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops, 1457 struct file *file, void *fh, void *arg) 1458 { 1459 struct video_device *vdev = video_devdata(file); 1460 struct v4l2_fmtdesc *p = arg; 1461 int ret = check_fmt(file, p->type); 1462 u32 mbus_code; 1463 u32 cap_mask; 1464 1465 if (ret) 1466 return ret; 1467 ret = -EINVAL; 1468 1469 if (!(vdev->device_caps & V4L2_CAP_IO_MC)) 1470 p->mbus_code = 0; 1471 1472 mbus_code = p->mbus_code; 1473 CLEAR_AFTER_FIELD(p, type); 1474 p->mbus_code = mbus_code; 1475 1476 switch (p->type) { 1477 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1478 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1479 cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE | 1480 V4L2_CAP_VIDEO_M2M_MPLANE; 1481 if (!!(vdev->device_caps & cap_mask) != 1482 (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) 1483 break; 1484 1485 if (unlikely(!ops->vidioc_enum_fmt_vid_cap)) 1486 break; 1487 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg); 1488 break; 1489 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1490 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay)) 1491 break; 1492 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg); 1493 break; 1494 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1495 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1496 cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE | 1497 V4L2_CAP_VIDEO_M2M_MPLANE; 1498 if (!!(vdev->device_caps & cap_mask) != 1499 (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)) 1500 break; 1501 1502 if (unlikely(!ops->vidioc_enum_fmt_vid_out)) 1503 break; 1504 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg); 1505 break; 1506 case V4L2_BUF_TYPE_SDR_CAPTURE: 1507 if (unlikely(!ops->vidioc_enum_fmt_sdr_cap)) 1508 break; 1509 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg); 1510 break; 1511 case V4L2_BUF_TYPE_SDR_OUTPUT: 1512 if (unlikely(!ops->vidioc_enum_fmt_sdr_out)) 1513 break; 1514 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg); 1515 break; 1516 case V4L2_BUF_TYPE_META_CAPTURE: 1517 if (unlikely(!ops->vidioc_enum_fmt_meta_cap)) 1518 break; 1519 ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg); 1520 break; 1521 case V4L2_BUF_TYPE_META_OUTPUT: 1522 if (unlikely(!ops->vidioc_enum_fmt_meta_out)) 1523 break; 1524 ret = ops->vidioc_enum_fmt_meta_out(file, fh, arg); 1525 break; 1526 } 1527 if (ret == 0) 1528 v4l_fill_fmtdesc(p); 1529 return ret; 1530 } 1531 1532 static void v4l_pix_format_touch(struct v4l2_pix_format *p) 1533 { 1534 /* 1535 * The v4l2_pix_format structure contains fields that make no sense for 1536 * touch. Set them to default values in this case. 1537 */ 1538 1539 p->field = V4L2_FIELD_NONE; 1540 p->colorspace = V4L2_COLORSPACE_RAW; 1541 p->flags = 0; 1542 p->ycbcr_enc = 0; 1543 p->quantization = 0; 1544 p->xfer_func = 0; 1545 } 1546 1547 static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, 1548 struct file *file, void *fh, void *arg) 1549 { 1550 struct v4l2_format *p = arg; 1551 struct video_device *vfd = video_devdata(file); 1552 int ret = check_fmt(file, p->type); 1553 1554 if (ret) 1555 return ret; 1556 1557 /* 1558 * fmt can't be cleared for these overlay types due to the 'clips' 1559 * 'clipcount' and 'bitmap' pointers in struct v4l2_window. 1560 * Those are provided by the user. So handle these two overlay types 1561 * first, and then just do a simple memset for the other types. 1562 */ 1563 switch (p->type) { 1564 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1565 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: { 1566 struct v4l2_clip *clips = p->fmt.win.clips; 1567 u32 clipcount = p->fmt.win.clipcount; 1568 void __user *bitmap = p->fmt.win.bitmap; 1569 1570 memset(&p->fmt, 0, sizeof(p->fmt)); 1571 p->fmt.win.clips = clips; 1572 p->fmt.win.clipcount = clipcount; 1573 p->fmt.win.bitmap = bitmap; 1574 break; 1575 } 1576 default: 1577 memset(&p->fmt, 0, sizeof(p->fmt)); 1578 break; 1579 } 1580 1581 switch (p->type) { 1582 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1583 if (unlikely(!ops->vidioc_g_fmt_vid_cap)) 1584 break; 1585 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1586 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg); 1587 /* just in case the driver zeroed it again */ 1588 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1589 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1590 v4l_pix_format_touch(&p->fmt.pix); 1591 return ret; 1592 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1593 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg); 1594 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1595 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg); 1596 case V4L2_BUF_TYPE_VBI_CAPTURE: 1597 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg); 1598 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1599 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg); 1600 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1601 if (unlikely(!ops->vidioc_g_fmt_vid_out)) 1602 break; 1603 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1604 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg); 1605 /* just in case the driver zeroed it again */ 1606 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1607 return ret; 1608 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1609 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg); 1610 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1611 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg); 1612 case V4L2_BUF_TYPE_VBI_OUTPUT: 1613 return ops->vidioc_g_fmt_vbi_out(file, fh, arg); 1614 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1615 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg); 1616 case V4L2_BUF_TYPE_SDR_CAPTURE: 1617 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg); 1618 case V4L2_BUF_TYPE_SDR_OUTPUT: 1619 return ops->vidioc_g_fmt_sdr_out(file, fh, arg); 1620 case V4L2_BUF_TYPE_META_CAPTURE: 1621 return ops->vidioc_g_fmt_meta_cap(file, fh, arg); 1622 case V4L2_BUF_TYPE_META_OUTPUT: 1623 return ops->vidioc_g_fmt_meta_out(file, fh, arg); 1624 } 1625 return -EINVAL; 1626 } 1627 1628 static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, 1629 struct file *file, void *fh, void *arg) 1630 { 1631 struct v4l2_format *p = arg; 1632 struct video_device *vfd = video_devdata(file); 1633 int ret = check_fmt(file, p->type); 1634 unsigned int i; 1635 1636 if (ret) 1637 return ret; 1638 1639 ret = v4l_enable_media_source(vfd); 1640 if (ret) 1641 return ret; 1642 v4l_sanitize_format(p); 1643 1644 switch (p->type) { 1645 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1646 if (unlikely(!ops->vidioc_s_fmt_vid_cap)) 1647 break; 1648 CLEAR_AFTER_FIELD(p, fmt.pix); 1649 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg); 1650 /* just in case the driver zeroed it again */ 1651 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1652 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1653 v4l_pix_format_touch(&p->fmt.pix); 1654 return ret; 1655 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1656 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane)) 1657 break; 1658 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1659 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1660 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1661 bytesperline); 1662 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg); 1663 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1664 if (unlikely(!ops->vidioc_s_fmt_vid_overlay)) 1665 break; 1666 CLEAR_AFTER_FIELD(p, fmt.win); 1667 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg); 1668 case V4L2_BUF_TYPE_VBI_CAPTURE: 1669 if (unlikely(!ops->vidioc_s_fmt_vbi_cap)) 1670 break; 1671 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1672 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg); 1673 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1674 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap)) 1675 break; 1676 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1677 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg); 1678 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1679 if (unlikely(!ops->vidioc_s_fmt_vid_out)) 1680 break; 1681 CLEAR_AFTER_FIELD(p, fmt.pix); 1682 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg); 1683 /* just in case the driver zeroed it again */ 1684 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1685 return ret; 1686 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1687 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane)) 1688 break; 1689 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1690 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1691 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1692 bytesperline); 1693 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg); 1694 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1695 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay)) 1696 break; 1697 CLEAR_AFTER_FIELD(p, fmt.win); 1698 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg); 1699 case V4L2_BUF_TYPE_VBI_OUTPUT: 1700 if (unlikely(!ops->vidioc_s_fmt_vbi_out)) 1701 break; 1702 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1703 return ops->vidioc_s_fmt_vbi_out(file, fh, arg); 1704 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1705 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out)) 1706 break; 1707 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1708 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg); 1709 case V4L2_BUF_TYPE_SDR_CAPTURE: 1710 if (unlikely(!ops->vidioc_s_fmt_sdr_cap)) 1711 break; 1712 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1713 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg); 1714 case V4L2_BUF_TYPE_SDR_OUTPUT: 1715 if (unlikely(!ops->vidioc_s_fmt_sdr_out)) 1716 break; 1717 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1718 return ops->vidioc_s_fmt_sdr_out(file, fh, arg); 1719 case V4L2_BUF_TYPE_META_CAPTURE: 1720 if (unlikely(!ops->vidioc_s_fmt_meta_cap)) 1721 break; 1722 CLEAR_AFTER_FIELD(p, fmt.meta); 1723 return ops->vidioc_s_fmt_meta_cap(file, fh, arg); 1724 case V4L2_BUF_TYPE_META_OUTPUT: 1725 if (unlikely(!ops->vidioc_s_fmt_meta_out)) 1726 break; 1727 CLEAR_AFTER_FIELD(p, fmt.meta); 1728 return ops->vidioc_s_fmt_meta_out(file, fh, arg); 1729 } 1730 return -EINVAL; 1731 } 1732 1733 static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, 1734 struct file *file, void *fh, void *arg) 1735 { 1736 struct v4l2_format *p = arg; 1737 struct video_device *vfd = video_devdata(file); 1738 int ret = check_fmt(file, p->type); 1739 unsigned int i; 1740 1741 if (ret) 1742 return ret; 1743 1744 v4l_sanitize_format(p); 1745 1746 switch (p->type) { 1747 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1748 if (unlikely(!ops->vidioc_try_fmt_vid_cap)) 1749 break; 1750 CLEAR_AFTER_FIELD(p, fmt.pix); 1751 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg); 1752 /* just in case the driver zeroed it again */ 1753 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1754 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1755 v4l_pix_format_touch(&p->fmt.pix); 1756 return ret; 1757 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1758 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane)) 1759 break; 1760 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1761 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1762 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1763 bytesperline); 1764 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg); 1765 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1766 if (unlikely(!ops->vidioc_try_fmt_vid_overlay)) 1767 break; 1768 CLEAR_AFTER_FIELD(p, fmt.win); 1769 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg); 1770 case V4L2_BUF_TYPE_VBI_CAPTURE: 1771 if (unlikely(!ops->vidioc_try_fmt_vbi_cap)) 1772 break; 1773 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1774 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg); 1775 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1776 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap)) 1777 break; 1778 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1779 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg); 1780 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1781 if (unlikely(!ops->vidioc_try_fmt_vid_out)) 1782 break; 1783 CLEAR_AFTER_FIELD(p, fmt.pix); 1784 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg); 1785 /* just in case the driver zeroed it again */ 1786 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1787 return ret; 1788 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1789 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane)) 1790 break; 1791 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1792 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1793 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1794 bytesperline); 1795 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg); 1796 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1797 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay)) 1798 break; 1799 CLEAR_AFTER_FIELD(p, fmt.win); 1800 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg); 1801 case V4L2_BUF_TYPE_VBI_OUTPUT: 1802 if (unlikely(!ops->vidioc_try_fmt_vbi_out)) 1803 break; 1804 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1805 return ops->vidioc_try_fmt_vbi_out(file, fh, arg); 1806 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1807 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out)) 1808 break; 1809 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1810 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg); 1811 case V4L2_BUF_TYPE_SDR_CAPTURE: 1812 if (unlikely(!ops->vidioc_try_fmt_sdr_cap)) 1813 break; 1814 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1815 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg); 1816 case V4L2_BUF_TYPE_SDR_OUTPUT: 1817 if (unlikely(!ops->vidioc_try_fmt_sdr_out)) 1818 break; 1819 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1820 return ops->vidioc_try_fmt_sdr_out(file, fh, arg); 1821 case V4L2_BUF_TYPE_META_CAPTURE: 1822 if (unlikely(!ops->vidioc_try_fmt_meta_cap)) 1823 break; 1824 CLEAR_AFTER_FIELD(p, fmt.meta); 1825 return ops->vidioc_try_fmt_meta_cap(file, fh, arg); 1826 case V4L2_BUF_TYPE_META_OUTPUT: 1827 if (unlikely(!ops->vidioc_try_fmt_meta_out)) 1828 break; 1829 CLEAR_AFTER_FIELD(p, fmt.meta); 1830 return ops->vidioc_try_fmt_meta_out(file, fh, arg); 1831 } 1832 return -EINVAL; 1833 } 1834 1835 static int v4l_streamon(const struct v4l2_ioctl_ops *ops, 1836 struct file *file, void *fh, void *arg) 1837 { 1838 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg); 1839 } 1840 1841 static int v4l_streamoff(const struct v4l2_ioctl_ops *ops, 1842 struct file *file, void *fh, void *arg) 1843 { 1844 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg); 1845 } 1846 1847 static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops, 1848 struct file *file, void *fh, void *arg) 1849 { 1850 struct video_device *vfd = video_devdata(file); 1851 struct v4l2_tuner *p = arg; 1852 int err; 1853 1854 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1855 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1856 err = ops->vidioc_g_tuner(file, fh, p); 1857 if (!err) 1858 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1859 return err; 1860 } 1861 1862 static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops, 1863 struct file *file, void *fh, void *arg) 1864 { 1865 struct video_device *vfd = video_devdata(file); 1866 struct v4l2_tuner *p = arg; 1867 int ret; 1868 1869 ret = v4l_enable_media_source(vfd); 1870 if (ret) 1871 return ret; 1872 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1873 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1874 return ops->vidioc_s_tuner(file, fh, p); 1875 } 1876 1877 static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops, 1878 struct file *file, void *fh, void *arg) 1879 { 1880 struct video_device *vfd = video_devdata(file); 1881 struct v4l2_modulator *p = arg; 1882 int err; 1883 1884 if (vfd->vfl_type == VFL_TYPE_RADIO) 1885 p->type = V4L2_TUNER_RADIO; 1886 1887 err = ops->vidioc_g_modulator(file, fh, p); 1888 if (!err) 1889 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1890 return err; 1891 } 1892 1893 static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops, 1894 struct file *file, void *fh, void *arg) 1895 { 1896 struct video_device *vfd = video_devdata(file); 1897 struct v4l2_modulator *p = arg; 1898 1899 if (vfd->vfl_type == VFL_TYPE_RADIO) 1900 p->type = V4L2_TUNER_RADIO; 1901 1902 return ops->vidioc_s_modulator(file, fh, p); 1903 } 1904 1905 static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops, 1906 struct file *file, void *fh, void *arg) 1907 { 1908 struct video_device *vfd = video_devdata(file); 1909 struct v4l2_frequency *p = arg; 1910 1911 if (vfd->vfl_type == VFL_TYPE_SDR) 1912 p->type = V4L2_TUNER_SDR; 1913 else 1914 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1915 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1916 return ops->vidioc_g_frequency(file, fh, p); 1917 } 1918 1919 static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops, 1920 struct file *file, void *fh, void *arg) 1921 { 1922 struct video_device *vfd = video_devdata(file); 1923 const struct v4l2_frequency *p = arg; 1924 enum v4l2_tuner_type type; 1925 int ret; 1926 1927 ret = v4l_enable_media_source(vfd); 1928 if (ret) 1929 return ret; 1930 if (vfd->vfl_type == VFL_TYPE_SDR) { 1931 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 1932 return -EINVAL; 1933 } else { 1934 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1935 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1936 if (type != p->type) 1937 return -EINVAL; 1938 } 1939 return ops->vidioc_s_frequency(file, fh, p); 1940 } 1941 1942 static int v4l_enumstd(const struct v4l2_ioctl_ops *ops, 1943 struct file *file, void *fh, void *arg) 1944 { 1945 struct video_device *vfd = video_devdata(file); 1946 struct v4l2_standard *p = arg; 1947 1948 return v4l_video_std_enumstd(p, vfd->tvnorms); 1949 } 1950 1951 static int v4l_s_std(const struct v4l2_ioctl_ops *ops, 1952 struct file *file, void *fh, void *arg) 1953 { 1954 struct video_device *vfd = video_devdata(file); 1955 v4l2_std_id id = *(v4l2_std_id *)arg, norm; 1956 int ret; 1957 1958 ret = v4l_enable_media_source(vfd); 1959 if (ret) 1960 return ret; 1961 norm = id & vfd->tvnorms; 1962 if (vfd->tvnorms && !norm) /* Check if std is supported */ 1963 return -EINVAL; 1964 1965 /* Calls the specific handler */ 1966 return ops->vidioc_s_std(file, fh, norm); 1967 } 1968 1969 static int v4l_querystd(const struct v4l2_ioctl_ops *ops, 1970 struct file *file, void *fh, void *arg) 1971 { 1972 struct video_device *vfd = video_devdata(file); 1973 v4l2_std_id *p = arg; 1974 int ret; 1975 1976 ret = v4l_enable_media_source(vfd); 1977 if (ret) 1978 return ret; 1979 /* 1980 * If no signal is detected, then the driver should return 1981 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with 1982 * any standards that do not apply removed. 1983 * 1984 * This means that tuners, audio and video decoders can join 1985 * their efforts to improve the standards detection. 1986 */ 1987 *p = vfd->tvnorms; 1988 return ops->vidioc_querystd(file, fh, arg); 1989 } 1990 1991 static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops, 1992 struct file *file, void *fh, void *arg) 1993 { 1994 struct video_device *vfd = video_devdata(file); 1995 struct v4l2_hw_freq_seek *p = arg; 1996 enum v4l2_tuner_type type; 1997 int ret; 1998 1999 ret = v4l_enable_media_source(vfd); 2000 if (ret) 2001 return ret; 2002 /* s_hw_freq_seek is not supported for SDR for now */ 2003 if (vfd->vfl_type == VFL_TYPE_SDR) 2004 return -EINVAL; 2005 2006 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2007 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2008 if (p->type != type) 2009 return -EINVAL; 2010 return ops->vidioc_s_hw_freq_seek(file, fh, p); 2011 } 2012 2013 static int v4l_overlay(const struct v4l2_ioctl_ops *ops, 2014 struct file *file, void *fh, void *arg) 2015 { 2016 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg); 2017 } 2018 2019 static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops, 2020 struct file *file, void *fh, void *arg) 2021 { 2022 struct v4l2_requestbuffers *p = arg; 2023 int ret = check_fmt(file, p->type); 2024 2025 if (ret) 2026 return ret; 2027 2028 CLEAR_AFTER_FIELD(p, flags); 2029 2030 return ops->vidioc_reqbufs(file, fh, p); 2031 } 2032 2033 static int v4l_querybuf(const struct v4l2_ioctl_ops *ops, 2034 struct file *file, void *fh, void *arg) 2035 { 2036 struct v4l2_buffer *p = arg; 2037 int ret = check_fmt(file, p->type); 2038 2039 return ret ? ret : ops->vidioc_querybuf(file, fh, p); 2040 } 2041 2042 static int v4l_qbuf(const struct v4l2_ioctl_ops *ops, 2043 struct file *file, void *fh, void *arg) 2044 { 2045 struct v4l2_buffer *p = arg; 2046 int ret = check_fmt(file, p->type); 2047 2048 return ret ? ret : ops->vidioc_qbuf(file, fh, p); 2049 } 2050 2051 static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops, 2052 struct file *file, void *fh, void *arg) 2053 { 2054 struct v4l2_buffer *p = arg; 2055 int ret = check_fmt(file, p->type); 2056 2057 return ret ? ret : ops->vidioc_dqbuf(file, fh, p); 2058 } 2059 2060 static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops, 2061 struct file *file, void *fh, void *arg) 2062 { 2063 struct v4l2_create_buffers *create = arg; 2064 int ret = check_fmt(file, create->format.type); 2065 2066 if (ret) 2067 return ret; 2068 2069 CLEAR_AFTER_FIELD(create, flags); 2070 2071 v4l_sanitize_format(&create->format); 2072 2073 ret = ops->vidioc_create_bufs(file, fh, create); 2074 2075 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 2076 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT) 2077 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 2078 2079 return ret; 2080 } 2081 2082 static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops, 2083 struct file *file, void *fh, void *arg) 2084 { 2085 struct v4l2_buffer *b = arg; 2086 int ret = check_fmt(file, b->type); 2087 2088 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b); 2089 } 2090 2091 static int v4l_g_parm(const struct v4l2_ioctl_ops *ops, 2092 struct file *file, void *fh, void *arg) 2093 { 2094 struct video_device *vfd = video_devdata(file); 2095 struct v4l2_streamparm *p = arg; 2096 v4l2_std_id std; 2097 int ret = check_fmt(file, p->type); 2098 2099 if (ret) 2100 return ret; 2101 if (ops->vidioc_g_parm) 2102 return ops->vidioc_g_parm(file, fh, p); 2103 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && 2104 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2105 return -EINVAL; 2106 if (vfd->device_caps & V4L2_CAP_READWRITE) 2107 p->parm.capture.readbuffers = 2; 2108 ret = ops->vidioc_g_std(file, fh, &std); 2109 if (ret == 0) 2110 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe); 2111 return ret; 2112 } 2113 2114 static int v4l_s_parm(const struct v4l2_ioctl_ops *ops, 2115 struct file *file, void *fh, void *arg) 2116 { 2117 struct v4l2_streamparm *p = arg; 2118 int ret = check_fmt(file, p->type); 2119 2120 if (ret) 2121 return ret; 2122 2123 /* Note: extendedmode is never used in drivers */ 2124 if (V4L2_TYPE_IS_OUTPUT(p->type)) { 2125 memset(p->parm.output.reserved, 0, 2126 sizeof(p->parm.output.reserved)); 2127 p->parm.output.extendedmode = 0; 2128 p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY; 2129 } else { 2130 memset(p->parm.capture.reserved, 0, 2131 sizeof(p->parm.capture.reserved)); 2132 p->parm.capture.extendedmode = 0; 2133 p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY; 2134 } 2135 return ops->vidioc_s_parm(file, fh, p); 2136 } 2137 2138 static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops, 2139 struct file *file, void *fh, void *arg) 2140 { 2141 struct video_device *vfd = video_devdata(file); 2142 struct v4l2_queryctrl *p = arg; 2143 struct v4l2_fh *vfh = 2144 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2145 2146 if (vfh && vfh->ctrl_handler) 2147 return v4l2_queryctrl(vfh->ctrl_handler, p); 2148 if (vfd->ctrl_handler) 2149 return v4l2_queryctrl(vfd->ctrl_handler, p); 2150 if (ops->vidioc_queryctrl) 2151 return ops->vidioc_queryctrl(file, fh, p); 2152 return -ENOTTY; 2153 } 2154 2155 static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops, 2156 struct file *file, void *fh, void *arg) 2157 { 2158 struct video_device *vfd = video_devdata(file); 2159 struct v4l2_query_ext_ctrl *p = arg; 2160 struct v4l2_fh *vfh = 2161 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2162 2163 if (vfh && vfh->ctrl_handler) 2164 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p); 2165 if (vfd->ctrl_handler) 2166 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p); 2167 if (ops->vidioc_query_ext_ctrl) 2168 return ops->vidioc_query_ext_ctrl(file, fh, p); 2169 return -ENOTTY; 2170 } 2171 2172 static int v4l_querymenu(const struct v4l2_ioctl_ops *ops, 2173 struct file *file, void *fh, void *arg) 2174 { 2175 struct video_device *vfd = video_devdata(file); 2176 struct v4l2_querymenu *p = arg; 2177 struct v4l2_fh *vfh = 2178 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2179 2180 if (vfh && vfh->ctrl_handler) 2181 return v4l2_querymenu(vfh->ctrl_handler, p); 2182 if (vfd->ctrl_handler) 2183 return v4l2_querymenu(vfd->ctrl_handler, p); 2184 if (ops->vidioc_querymenu) 2185 return ops->vidioc_querymenu(file, fh, p); 2186 return -ENOTTY; 2187 } 2188 2189 static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops, 2190 struct file *file, void *fh, void *arg) 2191 { 2192 struct video_device *vfd = video_devdata(file); 2193 struct v4l2_control *p = arg; 2194 struct v4l2_fh *vfh = 2195 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2196 struct v4l2_ext_controls ctrls; 2197 struct v4l2_ext_control ctrl; 2198 2199 if (vfh && vfh->ctrl_handler) 2200 return v4l2_g_ctrl(vfh->ctrl_handler, p); 2201 if (vfd->ctrl_handler) 2202 return v4l2_g_ctrl(vfd->ctrl_handler, p); 2203 if (ops->vidioc_g_ctrl) 2204 return ops->vidioc_g_ctrl(file, fh, p); 2205 if (ops->vidioc_g_ext_ctrls == NULL) 2206 return -ENOTTY; 2207 2208 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2209 ctrls.count = 1; 2210 ctrls.controls = &ctrl; 2211 ctrl.id = p->id; 2212 ctrl.value = p->value; 2213 if (check_ext_ctrls(&ctrls, VIDIOC_G_CTRL)) { 2214 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls); 2215 2216 if (ret == 0) 2217 p->value = ctrl.value; 2218 return ret; 2219 } 2220 return -EINVAL; 2221 } 2222 2223 static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, 2224 struct file *file, void *fh, void *arg) 2225 { 2226 struct video_device *vfd = video_devdata(file); 2227 struct v4l2_control *p = arg; 2228 struct v4l2_fh *vfh = 2229 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2230 struct v4l2_ext_controls ctrls; 2231 struct v4l2_ext_control ctrl; 2232 int ret; 2233 2234 if (vfh && vfh->ctrl_handler) 2235 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p); 2236 if (vfd->ctrl_handler) 2237 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p); 2238 if (ops->vidioc_s_ctrl) 2239 return ops->vidioc_s_ctrl(file, fh, p); 2240 if (ops->vidioc_s_ext_ctrls == NULL) 2241 return -ENOTTY; 2242 2243 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2244 ctrls.count = 1; 2245 ctrls.controls = &ctrl; 2246 ctrl.id = p->id; 2247 ctrl.value = p->value; 2248 if (!check_ext_ctrls(&ctrls, VIDIOC_S_CTRL)) 2249 return -EINVAL; 2250 ret = ops->vidioc_s_ext_ctrls(file, fh, &ctrls); 2251 p->value = ctrl.value; 2252 return ret; 2253 } 2254 2255 static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2256 struct file *file, void *fh, void *arg) 2257 { 2258 struct video_device *vfd = video_devdata(file); 2259 struct v4l2_ext_controls *p = arg; 2260 struct v4l2_fh *vfh = 2261 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2262 2263 p->error_idx = p->count; 2264 if (vfh && vfh->ctrl_handler) 2265 return v4l2_g_ext_ctrls(vfh->ctrl_handler, 2266 vfd, vfd->v4l2_dev->mdev, p); 2267 if (vfd->ctrl_handler) 2268 return v4l2_g_ext_ctrls(vfd->ctrl_handler, 2269 vfd, vfd->v4l2_dev->mdev, p); 2270 if (ops->vidioc_g_ext_ctrls == NULL) 2271 return -ENOTTY; 2272 return check_ext_ctrls(p, VIDIOC_G_EXT_CTRLS) ? 2273 ops->vidioc_g_ext_ctrls(file, fh, p) : -EINVAL; 2274 } 2275 2276 static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2277 struct file *file, void *fh, void *arg) 2278 { 2279 struct video_device *vfd = video_devdata(file); 2280 struct v4l2_ext_controls *p = arg; 2281 struct v4l2_fh *vfh = 2282 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2283 2284 p->error_idx = p->count; 2285 if (vfh && vfh->ctrl_handler) 2286 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, 2287 vfd, vfd->v4l2_dev->mdev, p); 2288 if (vfd->ctrl_handler) 2289 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, 2290 vfd, vfd->v4l2_dev->mdev, p); 2291 if (ops->vidioc_s_ext_ctrls == NULL) 2292 return -ENOTTY; 2293 return check_ext_ctrls(p, VIDIOC_S_EXT_CTRLS) ? 2294 ops->vidioc_s_ext_ctrls(file, fh, p) : -EINVAL; 2295 } 2296 2297 static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2298 struct file *file, void *fh, void *arg) 2299 { 2300 struct video_device *vfd = video_devdata(file); 2301 struct v4l2_ext_controls *p = arg; 2302 struct v4l2_fh *vfh = 2303 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2304 2305 p->error_idx = p->count; 2306 if (vfh && vfh->ctrl_handler) 2307 return v4l2_try_ext_ctrls(vfh->ctrl_handler, 2308 vfd, vfd->v4l2_dev->mdev, p); 2309 if (vfd->ctrl_handler) 2310 return v4l2_try_ext_ctrls(vfd->ctrl_handler, 2311 vfd, vfd->v4l2_dev->mdev, p); 2312 if (ops->vidioc_try_ext_ctrls == NULL) 2313 return -ENOTTY; 2314 return check_ext_ctrls(p, VIDIOC_TRY_EXT_CTRLS) ? 2315 ops->vidioc_try_ext_ctrls(file, fh, p) : -EINVAL; 2316 } 2317 2318 /* 2319 * The selection API specified originally that the _MPLANE buffer types 2320 * shouldn't be used. The reasons for this are lost in the mists of time 2321 * (or just really crappy memories). Regardless, this is really annoying 2322 * for userspace. So to keep things simple we map _MPLANE buffer types 2323 * to their 'regular' counterparts before calling the driver. And we 2324 * restore it afterwards. This way applications can use either buffer 2325 * type and drivers don't need to check for both. 2326 */ 2327 static int v4l_g_selection(const struct v4l2_ioctl_ops *ops, 2328 struct file *file, void *fh, void *arg) 2329 { 2330 struct v4l2_selection *p = arg; 2331 u32 old_type = p->type; 2332 int ret; 2333 2334 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2335 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2336 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2337 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2338 ret = ops->vidioc_g_selection(file, fh, p); 2339 p->type = old_type; 2340 return ret; 2341 } 2342 2343 static int v4l_s_selection(const struct v4l2_ioctl_ops *ops, 2344 struct file *file, void *fh, void *arg) 2345 { 2346 struct v4l2_selection *p = arg; 2347 u32 old_type = p->type; 2348 int ret; 2349 2350 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2351 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2352 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2353 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2354 ret = ops->vidioc_s_selection(file, fh, p); 2355 p->type = old_type; 2356 return ret; 2357 } 2358 2359 static int v4l_g_crop(const struct v4l2_ioctl_ops *ops, 2360 struct file *file, void *fh, void *arg) 2361 { 2362 struct video_device *vfd = video_devdata(file); 2363 struct v4l2_crop *p = arg; 2364 struct v4l2_selection s = { 2365 .type = p->type, 2366 }; 2367 int ret; 2368 2369 /* simulate capture crop using selection api */ 2370 2371 /* crop means compose for output devices */ 2372 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2373 s.target = V4L2_SEL_TGT_COMPOSE; 2374 else 2375 s.target = V4L2_SEL_TGT_CROP; 2376 2377 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2378 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2379 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2380 2381 ret = v4l_g_selection(ops, file, fh, &s); 2382 2383 /* copying results to old structure on success */ 2384 if (!ret) 2385 p->c = s.r; 2386 return ret; 2387 } 2388 2389 static int v4l_s_crop(const struct v4l2_ioctl_ops *ops, 2390 struct file *file, void *fh, void *arg) 2391 { 2392 struct video_device *vfd = video_devdata(file); 2393 struct v4l2_crop *p = arg; 2394 struct v4l2_selection s = { 2395 .type = p->type, 2396 .r = p->c, 2397 }; 2398 2399 /* simulate capture crop using selection api */ 2400 2401 /* crop means compose for output devices */ 2402 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2403 s.target = V4L2_SEL_TGT_COMPOSE; 2404 else 2405 s.target = V4L2_SEL_TGT_CROP; 2406 2407 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2408 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2409 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2410 2411 return v4l_s_selection(ops, file, fh, &s); 2412 } 2413 2414 static int v4l_cropcap(const struct v4l2_ioctl_ops *ops, 2415 struct file *file, void *fh, void *arg) 2416 { 2417 struct video_device *vfd = video_devdata(file); 2418 struct v4l2_cropcap *p = arg; 2419 struct v4l2_selection s = { .type = p->type }; 2420 int ret = 0; 2421 2422 /* setting trivial pixelaspect */ 2423 p->pixelaspect.numerator = 1; 2424 p->pixelaspect.denominator = 1; 2425 2426 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2427 s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2428 else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2429 s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2430 2431 /* 2432 * The determine_valid_ioctls() call already should ensure 2433 * that this can never happen, but just in case... 2434 */ 2435 if (WARN_ON(!ops->vidioc_g_selection)) 2436 return -ENOTTY; 2437 2438 if (ops->vidioc_g_pixelaspect) 2439 ret = ops->vidioc_g_pixelaspect(file, fh, s.type, 2440 &p->pixelaspect); 2441 2442 /* 2443 * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the 2444 * square pixel aspect ratio in that case. 2445 */ 2446 if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD) 2447 return ret; 2448 2449 /* Use g_selection() to fill in the bounds and defrect rectangles */ 2450 2451 /* obtaining bounds */ 2452 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2453 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS; 2454 else 2455 s.target = V4L2_SEL_TGT_CROP_BOUNDS; 2456 2457 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2458 s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ? 2459 V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS; 2460 2461 ret = v4l_g_selection(ops, file, fh, &s); 2462 if (ret) 2463 return ret; 2464 p->bounds = s.r; 2465 2466 /* obtaining defrect */ 2467 if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS) 2468 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT; 2469 else 2470 s.target = V4L2_SEL_TGT_CROP_DEFAULT; 2471 2472 ret = v4l_g_selection(ops, file, fh, &s); 2473 if (ret) 2474 return ret; 2475 p->defrect = s.r; 2476 2477 return 0; 2478 } 2479 2480 static int v4l_log_status(const struct v4l2_ioctl_ops *ops, 2481 struct file *file, void *fh, void *arg) 2482 { 2483 struct video_device *vfd = video_devdata(file); 2484 int ret; 2485 2486 if (vfd->v4l2_dev) 2487 pr_info("%s: ================= START STATUS =================\n", 2488 vfd->v4l2_dev->name); 2489 ret = ops->vidioc_log_status(file, fh); 2490 if (vfd->v4l2_dev) 2491 pr_info("%s: ================== END STATUS ==================\n", 2492 vfd->v4l2_dev->name); 2493 return ret; 2494 } 2495 2496 static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops, 2497 struct file *file, void *fh, void *arg) 2498 { 2499 #ifdef CONFIG_VIDEO_ADV_DEBUG 2500 struct v4l2_dbg_register *p = arg; 2501 struct video_device *vfd = video_devdata(file); 2502 struct v4l2_subdev *sd; 2503 int idx = 0; 2504 2505 if (!capable(CAP_SYS_ADMIN)) 2506 return -EPERM; 2507 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2508 if (vfd->v4l2_dev == NULL) 2509 return -EINVAL; 2510 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2511 if (p->match.addr == idx++) 2512 return v4l2_subdev_call(sd, core, g_register, p); 2513 return -EINVAL; 2514 } 2515 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2516 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2517 return ops->vidioc_g_register(file, fh, p); 2518 return -EINVAL; 2519 #else 2520 return -ENOTTY; 2521 #endif 2522 } 2523 2524 static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops, 2525 struct file *file, void *fh, void *arg) 2526 { 2527 #ifdef CONFIG_VIDEO_ADV_DEBUG 2528 const struct v4l2_dbg_register *p = arg; 2529 struct video_device *vfd = video_devdata(file); 2530 struct v4l2_subdev *sd; 2531 int idx = 0; 2532 2533 if (!capable(CAP_SYS_ADMIN)) 2534 return -EPERM; 2535 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2536 if (vfd->v4l2_dev == NULL) 2537 return -EINVAL; 2538 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2539 if (p->match.addr == idx++) 2540 return v4l2_subdev_call(sd, core, s_register, p); 2541 return -EINVAL; 2542 } 2543 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2544 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2545 return ops->vidioc_s_register(file, fh, p); 2546 return -EINVAL; 2547 #else 2548 return -ENOTTY; 2549 #endif 2550 } 2551 2552 static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops, 2553 struct file *file, void *fh, void *arg) 2554 { 2555 #ifdef CONFIG_VIDEO_ADV_DEBUG 2556 struct video_device *vfd = video_devdata(file); 2557 struct v4l2_dbg_chip_info *p = arg; 2558 struct v4l2_subdev *sd; 2559 int idx = 0; 2560 2561 switch (p->match.type) { 2562 case V4L2_CHIP_MATCH_BRIDGE: 2563 if (ops->vidioc_s_register) 2564 p->flags |= V4L2_CHIP_FL_WRITABLE; 2565 if (ops->vidioc_g_register) 2566 p->flags |= V4L2_CHIP_FL_READABLE; 2567 strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name)); 2568 if (ops->vidioc_g_chip_info) 2569 return ops->vidioc_g_chip_info(file, fh, arg); 2570 if (p->match.addr) 2571 return -EINVAL; 2572 return 0; 2573 2574 case V4L2_CHIP_MATCH_SUBDEV: 2575 if (vfd->v4l2_dev == NULL) 2576 break; 2577 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) { 2578 if (p->match.addr != idx++) 2579 continue; 2580 if (sd->ops->core && sd->ops->core->s_register) 2581 p->flags |= V4L2_CHIP_FL_WRITABLE; 2582 if (sd->ops->core && sd->ops->core->g_register) 2583 p->flags |= V4L2_CHIP_FL_READABLE; 2584 strscpy(p->name, sd->name, sizeof(p->name)); 2585 return 0; 2586 } 2587 break; 2588 } 2589 return -EINVAL; 2590 #else 2591 return -ENOTTY; 2592 #endif 2593 } 2594 2595 static int v4l_dqevent(const struct v4l2_ioctl_ops *ops, 2596 struct file *file, void *fh, void *arg) 2597 { 2598 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK); 2599 } 2600 2601 static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops, 2602 struct file *file, void *fh, void *arg) 2603 { 2604 return ops->vidioc_subscribe_event(fh, arg); 2605 } 2606 2607 static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops, 2608 struct file *file, void *fh, void *arg) 2609 { 2610 return ops->vidioc_unsubscribe_event(fh, arg); 2611 } 2612 2613 static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops, 2614 struct file *file, void *fh, void *arg) 2615 { 2616 struct v4l2_sliced_vbi_cap *p = arg; 2617 int ret = check_fmt(file, p->type); 2618 2619 if (ret) 2620 return ret; 2621 2622 /* Clear up to type, everything after type is zeroed already */ 2623 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type)); 2624 2625 return ops->vidioc_g_sliced_vbi_cap(file, fh, p); 2626 } 2627 2628 static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops, 2629 struct file *file, void *fh, void *arg) 2630 { 2631 struct video_device *vfd = video_devdata(file); 2632 struct v4l2_frequency_band *p = arg; 2633 enum v4l2_tuner_type type; 2634 int err; 2635 2636 if (vfd->vfl_type == VFL_TYPE_SDR) { 2637 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 2638 return -EINVAL; 2639 type = p->type; 2640 } else { 2641 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2642 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2643 if (type != p->type) 2644 return -EINVAL; 2645 } 2646 if (ops->vidioc_enum_freq_bands) { 2647 err = ops->vidioc_enum_freq_bands(file, fh, p); 2648 if (err != -ENOTTY) 2649 return err; 2650 } 2651 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) { 2652 struct v4l2_tuner t = { 2653 .index = p->tuner, 2654 .type = type, 2655 }; 2656 2657 if (p->index) 2658 return -EINVAL; 2659 err = ops->vidioc_g_tuner(file, fh, &t); 2660 if (err) 2661 return err; 2662 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2663 p->rangelow = t.rangelow; 2664 p->rangehigh = t.rangehigh; 2665 p->modulation = (type == V4L2_TUNER_RADIO) ? 2666 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2667 return 0; 2668 } 2669 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) { 2670 struct v4l2_modulator m = { 2671 .index = p->tuner, 2672 }; 2673 2674 if (type != V4L2_TUNER_RADIO) 2675 return -EINVAL; 2676 if (p->index) 2677 return -EINVAL; 2678 err = ops->vidioc_g_modulator(file, fh, &m); 2679 if (err) 2680 return err; 2681 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2682 p->rangelow = m.rangelow; 2683 p->rangehigh = m.rangehigh; 2684 p->modulation = (type == V4L2_TUNER_RADIO) ? 2685 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2686 return 0; 2687 } 2688 return -ENOTTY; 2689 } 2690 2691 struct v4l2_ioctl_info { 2692 unsigned int ioctl; 2693 u32 flags; 2694 const char * const name; 2695 int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file, 2696 void *fh, void *p); 2697 void (*debug)(const void *arg, bool write_only); 2698 }; 2699 2700 /* This control needs a priority check */ 2701 #define INFO_FL_PRIO (1 << 0) 2702 /* This control can be valid if the filehandle passes a control handler. */ 2703 #define INFO_FL_CTRL (1 << 1) 2704 /* Queuing ioctl */ 2705 #define INFO_FL_QUEUE (1 << 2) 2706 /* Always copy back result, even on error */ 2707 #define INFO_FL_ALWAYS_COPY (1 << 3) 2708 /* Zero struct from after the field to the end */ 2709 #define INFO_FL_CLEAR(v4l2_struct, field) \ 2710 ((offsetof(struct v4l2_struct, field) + \ 2711 sizeof_field(struct v4l2_struct, field)) << 16) 2712 #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16) 2713 2714 #define DEFINE_V4L_STUB_FUNC(_vidioc) \ 2715 static int v4l_stub_ ## _vidioc( \ 2716 const struct v4l2_ioctl_ops *ops, \ 2717 struct file *file, void *fh, void *p) \ 2718 { \ 2719 return ops->vidioc_ ## _vidioc(file, fh, p); \ 2720 } 2721 2722 #define IOCTL_INFO(_ioctl, _func, _debug, _flags) \ 2723 [_IOC_NR(_ioctl)] = { \ 2724 .ioctl = _ioctl, \ 2725 .flags = _flags, \ 2726 .name = #_ioctl, \ 2727 .func = _func, \ 2728 .debug = _debug, \ 2729 } 2730 2731 DEFINE_V4L_STUB_FUNC(g_fbuf) 2732 DEFINE_V4L_STUB_FUNC(s_fbuf) 2733 DEFINE_V4L_STUB_FUNC(expbuf) 2734 DEFINE_V4L_STUB_FUNC(g_std) 2735 DEFINE_V4L_STUB_FUNC(g_audio) 2736 DEFINE_V4L_STUB_FUNC(s_audio) 2737 DEFINE_V4L_STUB_FUNC(g_edid) 2738 DEFINE_V4L_STUB_FUNC(s_edid) 2739 DEFINE_V4L_STUB_FUNC(g_audout) 2740 DEFINE_V4L_STUB_FUNC(s_audout) 2741 DEFINE_V4L_STUB_FUNC(g_jpegcomp) 2742 DEFINE_V4L_STUB_FUNC(s_jpegcomp) 2743 DEFINE_V4L_STUB_FUNC(enumaudio) 2744 DEFINE_V4L_STUB_FUNC(enumaudout) 2745 DEFINE_V4L_STUB_FUNC(enum_framesizes) 2746 DEFINE_V4L_STUB_FUNC(enum_frameintervals) 2747 DEFINE_V4L_STUB_FUNC(g_enc_index) 2748 DEFINE_V4L_STUB_FUNC(encoder_cmd) 2749 DEFINE_V4L_STUB_FUNC(try_encoder_cmd) 2750 DEFINE_V4L_STUB_FUNC(decoder_cmd) 2751 DEFINE_V4L_STUB_FUNC(try_decoder_cmd) 2752 DEFINE_V4L_STUB_FUNC(s_dv_timings) 2753 DEFINE_V4L_STUB_FUNC(g_dv_timings) 2754 DEFINE_V4L_STUB_FUNC(enum_dv_timings) 2755 DEFINE_V4L_STUB_FUNC(query_dv_timings) 2756 DEFINE_V4L_STUB_FUNC(dv_timings_cap) 2757 2758 static const struct v4l2_ioctl_info v4l2_ioctls[] = { 2759 IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0), 2760 IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, 0), 2761 IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0), 2762 IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO), 2763 IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2764 IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)), 2765 IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0), 2766 IOCTL_INFO(VIDIOC_S_FBUF, v4l_stub_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO), 2767 IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO), 2768 IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE), 2769 IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)), 2770 IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE), 2771 IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2772 IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2773 IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)), 2774 IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO), 2775 IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0), 2776 IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO), 2777 IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)), 2778 IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)), 2779 IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)), 2780 IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL), 2781 IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)), 2782 IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO), 2783 IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0), 2784 IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO), 2785 IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)), 2786 IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)), 2787 IOCTL_INFO(VIDIOC_G_INPUT, v4l_g_input, v4l_print_u32, 0), 2788 IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO), 2789 IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY), 2790 IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY), 2791 IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_g_output, v4l_print_u32, 0), 2792 IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO), 2793 IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)), 2794 IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0), 2795 IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO), 2796 IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)), 2797 IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO), 2798 IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)), 2799 IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO), 2800 IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)), 2801 IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)), 2802 IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO), 2803 IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)), 2804 IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)), 2805 IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0), 2806 IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO), 2807 IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0), 2808 IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0), 2809 IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)), 2810 IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)), 2811 IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0), 2812 IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO), 2813 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)), 2814 IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0), 2815 IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL), 2816 IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL), 2817 IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL), 2818 IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)), 2819 IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)), 2820 IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0), 2821 IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2822 IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2823 IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO), 2824 IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0), 2825 IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0), 2826 IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0), 2827 IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO), 2828 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)), 2829 IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0), 2830 IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0), 2831 IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0), 2832 IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0), 2833 IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2834 IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE), 2835 IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)), 2836 IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY), 2837 IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)), 2838 IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0), 2839 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)), 2840 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)), 2841 }; 2842 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) 2843 2844 static bool v4l2_is_known_ioctl(unsigned int cmd) 2845 { 2846 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2847 return false; 2848 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd; 2849 } 2850 2851 static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, 2852 struct v4l2_fh *vfh, unsigned int cmd, 2853 void *arg) 2854 { 2855 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2856 return vdev->lock; 2857 if (vfh && vfh->m2m_ctx && 2858 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) { 2859 if (vfh->m2m_ctx->q_lock) 2860 return vfh->m2m_ctx->q_lock; 2861 } 2862 if (vdev->queue && vdev->queue->lock && 2863 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) 2864 return vdev->queue->lock; 2865 return vdev->lock; 2866 } 2867 2868 /* Common ioctl debug function. This function can be used by 2869 external ioctl messages as well as internal V4L ioctl */ 2870 void v4l_printk_ioctl(const char *prefix, unsigned int cmd) 2871 { 2872 const char *dir, *type; 2873 2874 if (prefix) 2875 printk(KERN_DEBUG "%s: ", prefix); 2876 2877 switch (_IOC_TYPE(cmd)) { 2878 case 'd': 2879 type = "v4l2_int"; 2880 break; 2881 case 'V': 2882 if (_IOC_NR(cmd) >= V4L2_IOCTLS) { 2883 type = "v4l2"; 2884 break; 2885 } 2886 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name); 2887 return; 2888 default: 2889 type = "unknown"; 2890 break; 2891 } 2892 2893 switch (_IOC_DIR(cmd)) { 2894 case _IOC_NONE: dir = "--"; break; 2895 case _IOC_READ: dir = "r-"; break; 2896 case _IOC_WRITE: dir = "-w"; break; 2897 case _IOC_READ | _IOC_WRITE: dir = "rw"; break; 2898 default: dir = "*ERR*"; break; 2899 } 2900 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)", 2901 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd); 2902 } 2903 EXPORT_SYMBOL(v4l_printk_ioctl); 2904 2905 static long __video_do_ioctl(struct file *file, 2906 unsigned int cmd, void *arg) 2907 { 2908 struct video_device *vfd = video_devdata(file); 2909 struct mutex *req_queue_lock = NULL; 2910 struct mutex *lock; /* ioctl serialization mutex */ 2911 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 2912 bool write_only = false; 2913 struct v4l2_ioctl_info default_info; 2914 const struct v4l2_ioctl_info *info; 2915 void *fh = file->private_data; 2916 struct v4l2_fh *vfh = NULL; 2917 int dev_debug = vfd->dev_debug; 2918 long ret = -ENOTTY; 2919 2920 if (ops == NULL) { 2921 pr_warn("%s: has no ioctl_ops.\n", 2922 video_device_node_name(vfd)); 2923 return ret; 2924 } 2925 2926 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 2927 vfh = file->private_data; 2928 2929 /* 2930 * We need to serialize streamon/off with queueing new requests. 2931 * These ioctls may trigger the cancellation of a streaming 2932 * operation, and that should not be mixed with queueing a new 2933 * request at the same time. 2934 */ 2935 if (v4l2_device_supports_requests(vfd->v4l2_dev) && 2936 (cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF)) { 2937 req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex; 2938 2939 if (mutex_lock_interruptible(req_queue_lock)) 2940 return -ERESTARTSYS; 2941 } 2942 2943 lock = v4l2_ioctl_get_lock(vfd, vfh, cmd, arg); 2944 2945 if (lock && mutex_lock_interruptible(lock)) { 2946 if (req_queue_lock) 2947 mutex_unlock(req_queue_lock); 2948 return -ERESTARTSYS; 2949 } 2950 2951 if (!video_is_registered(vfd)) { 2952 ret = -ENODEV; 2953 goto unlock; 2954 } 2955 2956 if (v4l2_is_known_ioctl(cmd)) { 2957 info = &v4l2_ioctls[_IOC_NR(cmd)]; 2958 2959 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) && 2960 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler)) 2961 goto done; 2962 2963 if (vfh && (info->flags & INFO_FL_PRIO)) { 2964 ret = v4l2_prio_check(vfd->prio, vfh->prio); 2965 if (ret) 2966 goto done; 2967 } 2968 } else { 2969 default_info.ioctl = cmd; 2970 default_info.flags = 0; 2971 default_info.debug = v4l_print_default; 2972 info = &default_info; 2973 } 2974 2975 write_only = _IOC_DIR(cmd) == _IOC_WRITE; 2976 if (info != &default_info) { 2977 ret = info->func(ops, file, fh, arg); 2978 } else if (!ops->vidioc_default) { 2979 ret = -ENOTTY; 2980 } else { 2981 ret = ops->vidioc_default(file, fh, 2982 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0, 2983 cmd, arg); 2984 } 2985 2986 done: 2987 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) { 2988 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) && 2989 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF)) 2990 goto unlock; 2991 2992 v4l_printk_ioctl(video_device_node_name(vfd), cmd); 2993 if (ret < 0) 2994 pr_cont(": error %ld", ret); 2995 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG)) 2996 pr_cont("\n"); 2997 else if (_IOC_DIR(cmd) == _IOC_NONE) 2998 info->debug(arg, write_only); 2999 else { 3000 pr_cont(": "); 3001 info->debug(arg, write_only); 3002 } 3003 } 3004 3005 unlock: 3006 if (lock) 3007 mutex_unlock(lock); 3008 if (req_queue_lock) 3009 mutex_unlock(req_queue_lock); 3010 return ret; 3011 } 3012 3013 static int check_array_args(unsigned int cmd, void *parg, size_t *array_size, 3014 void __user **user_ptr, void ***kernel_ptr) 3015 { 3016 int ret = 0; 3017 3018 switch (cmd) { 3019 case VIDIOC_PREPARE_BUF: 3020 case VIDIOC_QUERYBUF: 3021 case VIDIOC_QBUF: 3022 case VIDIOC_DQBUF: { 3023 struct v4l2_buffer *buf = parg; 3024 3025 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) { 3026 if (buf->length > VIDEO_MAX_PLANES) { 3027 ret = -EINVAL; 3028 break; 3029 } 3030 *user_ptr = (void __user *)buf->m.planes; 3031 *kernel_ptr = (void **)&buf->m.planes; 3032 *array_size = sizeof(struct v4l2_plane) * buf->length; 3033 ret = 1; 3034 } 3035 break; 3036 } 3037 3038 case VIDIOC_G_EDID: 3039 case VIDIOC_S_EDID: { 3040 struct v4l2_edid *edid = parg; 3041 3042 if (edid->blocks) { 3043 if (edid->blocks > 256) { 3044 ret = -EINVAL; 3045 break; 3046 } 3047 *user_ptr = (void __user *)edid->edid; 3048 *kernel_ptr = (void **)&edid->edid; 3049 *array_size = edid->blocks * 128; 3050 ret = 1; 3051 } 3052 break; 3053 } 3054 3055 case VIDIOC_S_EXT_CTRLS: 3056 case VIDIOC_G_EXT_CTRLS: 3057 case VIDIOC_TRY_EXT_CTRLS: { 3058 struct v4l2_ext_controls *ctrls = parg; 3059 3060 if (ctrls->count != 0) { 3061 if (ctrls->count > V4L2_CID_MAX_CTRLS) { 3062 ret = -EINVAL; 3063 break; 3064 } 3065 *user_ptr = (void __user *)ctrls->controls; 3066 *kernel_ptr = (void **)&ctrls->controls; 3067 *array_size = sizeof(struct v4l2_ext_control) 3068 * ctrls->count; 3069 ret = 1; 3070 } 3071 break; 3072 } 3073 case VIDIOC_G_FMT: 3074 case VIDIOC_S_FMT: 3075 case VIDIOC_TRY_FMT: { 3076 struct v4l2_format *fmt = parg; 3077 3078 if (fmt->type != V4L2_BUF_TYPE_VIDEO_OVERLAY && 3079 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY) 3080 break; 3081 if (fmt->fmt.win.clipcount > 2048) 3082 return -EINVAL; 3083 if (!fmt->fmt.win.clipcount) 3084 break; 3085 3086 *user_ptr = (void __user *)fmt->fmt.win.clips; 3087 *kernel_ptr = (void **)&fmt->fmt.win.clips; 3088 *array_size = sizeof(struct v4l2_clip) 3089 * fmt->fmt.win.clipcount; 3090 3091 ret = 1; 3092 break; 3093 } 3094 } 3095 3096 return ret; 3097 } 3098 3099 static unsigned int video_translate_cmd(unsigned int cmd) 3100 { 3101 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3102 switch (cmd) { 3103 case VIDIOC_DQEVENT_TIME32: 3104 return VIDIOC_DQEVENT; 3105 case VIDIOC_QUERYBUF_TIME32: 3106 return VIDIOC_QUERYBUF; 3107 case VIDIOC_QBUF_TIME32: 3108 return VIDIOC_QBUF; 3109 case VIDIOC_DQBUF_TIME32: 3110 return VIDIOC_DQBUF; 3111 case VIDIOC_PREPARE_BUF_TIME32: 3112 return VIDIOC_PREPARE_BUF; 3113 } 3114 #endif 3115 if (in_compat_syscall()) 3116 return v4l2_compat_translate_cmd(cmd); 3117 3118 return cmd; 3119 } 3120 3121 static int video_get_user(void __user *arg, void *parg, 3122 unsigned int real_cmd, unsigned int cmd, 3123 bool *always_copy) 3124 { 3125 unsigned int n = _IOC_SIZE(real_cmd); 3126 int err = 0; 3127 3128 if (!(_IOC_DIR(cmd) & _IOC_WRITE)) { 3129 /* read-only ioctl */ 3130 memset(parg, 0, n); 3131 return 0; 3132 } 3133 3134 /* 3135 * In some cases, only a few fields are used as input, 3136 * i.e. when the app sets "index" and then the driver 3137 * fills in the rest of the structure for the thing 3138 * with that index. We only need to copy up the first 3139 * non-input field. 3140 */ 3141 if (v4l2_is_known_ioctl(real_cmd)) { 3142 u32 flags = v4l2_ioctls[_IOC_NR(real_cmd)].flags; 3143 3144 if (flags & INFO_FL_CLEAR_MASK) 3145 n = (flags & INFO_FL_CLEAR_MASK) >> 16; 3146 *always_copy = flags & INFO_FL_ALWAYS_COPY; 3147 } 3148 3149 if (cmd == real_cmd) { 3150 if (copy_from_user(parg, (void __user *)arg, n)) 3151 err = -EFAULT; 3152 } else if (in_compat_syscall()) { 3153 memset(parg, 0, n); 3154 err = v4l2_compat_get_user(arg, parg, cmd); 3155 } else { 3156 memset(parg, 0, n); 3157 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3158 switch (cmd) { 3159 case VIDIOC_QUERYBUF_TIME32: 3160 case VIDIOC_QBUF_TIME32: 3161 case VIDIOC_DQBUF_TIME32: 3162 case VIDIOC_PREPARE_BUF_TIME32: { 3163 struct v4l2_buffer_time32 vb32; 3164 struct v4l2_buffer *vb = parg; 3165 3166 if (copy_from_user(&vb32, arg, sizeof(vb32))) 3167 return -EFAULT; 3168 3169 *vb = (struct v4l2_buffer) { 3170 .index = vb32.index, 3171 .type = vb32.type, 3172 .bytesused = vb32.bytesused, 3173 .flags = vb32.flags, 3174 .field = vb32.field, 3175 .timestamp.tv_sec = vb32.timestamp.tv_sec, 3176 .timestamp.tv_usec = vb32.timestamp.tv_usec, 3177 .timecode = vb32.timecode, 3178 .sequence = vb32.sequence, 3179 .memory = vb32.memory, 3180 .m.userptr = vb32.m.userptr, 3181 .length = vb32.length, 3182 .request_fd = vb32.request_fd, 3183 }; 3184 break; 3185 } 3186 } 3187 #endif 3188 } 3189 3190 /* zero out anything we don't copy from userspace */ 3191 if (!err && n < _IOC_SIZE(real_cmd)) 3192 memset((u8 *)parg + n, 0, _IOC_SIZE(real_cmd) - n); 3193 return err; 3194 } 3195 3196 static int video_put_user(void __user *arg, void *parg, 3197 unsigned int real_cmd, unsigned int cmd) 3198 { 3199 if (!(_IOC_DIR(cmd) & _IOC_READ)) 3200 return 0; 3201 3202 if (cmd == real_cmd) { 3203 /* Copy results into user buffer */ 3204 if (copy_to_user(arg, parg, _IOC_SIZE(cmd))) 3205 return -EFAULT; 3206 return 0; 3207 } 3208 3209 if (in_compat_syscall()) 3210 return v4l2_compat_put_user(arg, parg, cmd); 3211 3212 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3213 switch (cmd) { 3214 case VIDIOC_DQEVENT_TIME32: { 3215 struct v4l2_event *ev = parg; 3216 struct v4l2_event_time32 ev32; 3217 3218 memset(&ev32, 0, sizeof(ev32)); 3219 3220 ev32.type = ev->type; 3221 ev32.pending = ev->pending; 3222 ev32.sequence = ev->sequence; 3223 ev32.timestamp.tv_sec = ev->timestamp.tv_sec; 3224 ev32.timestamp.tv_nsec = ev->timestamp.tv_nsec; 3225 ev32.id = ev->id; 3226 3227 memcpy(&ev32.u, &ev->u, sizeof(ev->u)); 3228 memcpy(&ev32.reserved, &ev->reserved, sizeof(ev->reserved)); 3229 3230 if (copy_to_user(arg, &ev32, sizeof(ev32))) 3231 return -EFAULT; 3232 break; 3233 } 3234 case VIDIOC_QUERYBUF_TIME32: 3235 case VIDIOC_QBUF_TIME32: 3236 case VIDIOC_DQBUF_TIME32: 3237 case VIDIOC_PREPARE_BUF_TIME32: { 3238 struct v4l2_buffer *vb = parg; 3239 struct v4l2_buffer_time32 vb32; 3240 3241 memset(&vb32, 0, sizeof(vb32)); 3242 3243 vb32.index = vb->index; 3244 vb32.type = vb->type; 3245 vb32.bytesused = vb->bytesused; 3246 vb32.flags = vb->flags; 3247 vb32.field = vb->field; 3248 vb32.timestamp.tv_sec = vb->timestamp.tv_sec; 3249 vb32.timestamp.tv_usec = vb->timestamp.tv_usec; 3250 vb32.timecode = vb->timecode; 3251 vb32.sequence = vb->sequence; 3252 vb32.memory = vb->memory; 3253 vb32.m.userptr = vb->m.userptr; 3254 vb32.length = vb->length; 3255 vb32.request_fd = vb->request_fd; 3256 3257 if (copy_to_user(arg, &vb32, sizeof(vb32))) 3258 return -EFAULT; 3259 break; 3260 } 3261 } 3262 #endif 3263 3264 return 0; 3265 } 3266 3267 long 3268 video_usercopy(struct file *file, unsigned int orig_cmd, unsigned long arg, 3269 v4l2_kioctl func) 3270 { 3271 char sbuf[128]; 3272 void *mbuf = NULL, *array_buf = NULL; 3273 void *parg = (void *)arg; 3274 long err = -EINVAL; 3275 bool has_array_args; 3276 bool always_copy = false; 3277 size_t array_size = 0; 3278 void __user *user_ptr = NULL; 3279 void **kernel_ptr = NULL; 3280 unsigned int cmd = video_translate_cmd(orig_cmd); 3281 const size_t ioc_size = _IOC_SIZE(cmd); 3282 3283 /* Copy arguments into temp kernel buffer */ 3284 if (_IOC_DIR(cmd) != _IOC_NONE) { 3285 if (ioc_size <= sizeof(sbuf)) { 3286 parg = sbuf; 3287 } else { 3288 /* too big to allocate from stack */ 3289 mbuf = kmalloc(ioc_size, GFP_KERNEL); 3290 if (NULL == mbuf) 3291 return -ENOMEM; 3292 parg = mbuf; 3293 } 3294 3295 err = video_get_user((void __user *)arg, parg, cmd, 3296 orig_cmd, &always_copy); 3297 if (err) 3298 goto out; 3299 } 3300 3301 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr); 3302 if (err < 0) 3303 goto out; 3304 has_array_args = err; 3305 3306 if (has_array_args) { 3307 array_buf = kvmalloc(array_size, GFP_KERNEL); 3308 err = -ENOMEM; 3309 if (array_buf == NULL) 3310 goto out_array_args; 3311 err = -EFAULT; 3312 if (in_compat_syscall()) 3313 err = v4l2_compat_get_array_args(file, array_buf, 3314 user_ptr, array_size, 3315 orig_cmd, parg); 3316 else 3317 err = copy_from_user(array_buf, user_ptr, array_size) ? 3318 -EFAULT : 0; 3319 if (err) 3320 goto out_array_args; 3321 *kernel_ptr = array_buf; 3322 } 3323 3324 /* Handles IOCTL */ 3325 err = func(file, cmd, parg); 3326 if (err == -ENOTTY || err == -ENOIOCTLCMD) { 3327 err = -ENOTTY; 3328 goto out; 3329 } 3330 3331 if (err == 0) { 3332 if (cmd == VIDIOC_DQBUF) 3333 trace_v4l2_dqbuf(video_devdata(file)->minor, parg); 3334 else if (cmd == VIDIOC_QBUF) 3335 trace_v4l2_qbuf(video_devdata(file)->minor, parg); 3336 } 3337 3338 if (has_array_args) { 3339 *kernel_ptr = (void __force *)user_ptr; 3340 if (in_compat_syscall()) { 3341 int put_err; 3342 3343 put_err = v4l2_compat_put_array_args(file, user_ptr, 3344 array_buf, 3345 array_size, 3346 orig_cmd, parg); 3347 if (put_err) 3348 err = put_err; 3349 } else if (copy_to_user(user_ptr, array_buf, array_size)) { 3350 err = -EFAULT; 3351 } 3352 goto out_array_args; 3353 } 3354 /* 3355 * Some ioctls can return an error, but still have valid 3356 * results that must be returned. 3357 */ 3358 if (err < 0 && !always_copy) 3359 goto out; 3360 3361 out_array_args: 3362 if (video_put_user((void __user *)arg, parg, cmd, orig_cmd)) 3363 err = -EFAULT; 3364 out: 3365 kvfree(array_buf); 3366 kfree(mbuf); 3367 return err; 3368 } 3369 3370 long video_ioctl2(struct file *file, 3371 unsigned int cmd, unsigned long arg) 3372 { 3373 return video_usercopy(file, cmd, arg, __video_do_ioctl); 3374 } 3375 EXPORT_SYMBOL(video_ioctl2); 3376