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