1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Video capture interface for Linux version 2 4 * 5 * A generic framework to process V4L2 ioctl commands. 6 * 7 * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1) 8 * Mauro Carvalho Chehab <mchehab@kernel.org> (version 2) 9 */ 10 11 #include <linux/compat.h> 12 #include <linux/mm.h> 13 #include <linux/module.h> 14 #include <linux/slab.h> 15 #include <linux/types.h> 16 #include <linux/kernel.h> 17 #include <linux/version.h> 18 19 #include <linux/videodev2.h> 20 21 #include <media/media-device.h> /* for media_set_bus_info() */ 22 #include <media/v4l2-common.h> 23 #include <media/v4l2-ioctl.h> 24 #include <media/v4l2-ctrls.h> 25 #include <media/v4l2-fh.h> 26 #include <media/v4l2-event.h> 27 #include <media/v4l2-device.h> 28 #include <media/videobuf2-v4l2.h> 29 #include <media/v4l2-mc.h> 30 #include <media/v4l2-mem2mem.h> 31 32 #include <trace/events/v4l2.h> 33 34 /* Zero out the end of the struct pointed to by p. Everything after, but 35 * not including, the specified field is cleared. */ 36 #define CLEAR_AFTER_FIELD(p, field) \ 37 memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \ 38 0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field)) 39 40 #define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls) 41 42 struct std_descr { 43 v4l2_std_id std; 44 const char *descr; 45 }; 46 47 static const struct std_descr standards[] = { 48 { V4L2_STD_NTSC, "NTSC" }, 49 { V4L2_STD_NTSC_M, "NTSC-M" }, 50 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" }, 51 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" }, 52 { V4L2_STD_NTSC_443, "NTSC-443" }, 53 { V4L2_STD_PAL, "PAL" }, 54 { V4L2_STD_PAL_BG, "PAL-BG" }, 55 { V4L2_STD_PAL_B, "PAL-B" }, 56 { V4L2_STD_PAL_B1, "PAL-B1" }, 57 { V4L2_STD_PAL_G, "PAL-G" }, 58 { V4L2_STD_PAL_H, "PAL-H" }, 59 { V4L2_STD_PAL_I, "PAL-I" }, 60 { V4L2_STD_PAL_DK, "PAL-DK" }, 61 { V4L2_STD_PAL_D, "PAL-D" }, 62 { V4L2_STD_PAL_D1, "PAL-D1" }, 63 { V4L2_STD_PAL_K, "PAL-K" }, 64 { V4L2_STD_PAL_M, "PAL-M" }, 65 { V4L2_STD_PAL_N, "PAL-N" }, 66 { V4L2_STD_PAL_Nc, "PAL-Nc" }, 67 { V4L2_STD_PAL_60, "PAL-60" }, 68 { V4L2_STD_SECAM, "SECAM" }, 69 { V4L2_STD_SECAM_B, "SECAM-B" }, 70 { V4L2_STD_SECAM_G, "SECAM-G" }, 71 { V4L2_STD_SECAM_H, "SECAM-H" }, 72 { V4L2_STD_SECAM_DK, "SECAM-DK" }, 73 { V4L2_STD_SECAM_D, "SECAM-D" }, 74 { V4L2_STD_SECAM_K, "SECAM-K" }, 75 { V4L2_STD_SECAM_K1, "SECAM-K1" }, 76 { V4L2_STD_SECAM_L, "SECAM-L" }, 77 { V4L2_STD_SECAM_LC, "SECAM-Lc" }, 78 { 0, "Unknown" } 79 }; 80 81 /* video4linux standard ID conversion to standard name 82 */ 83 const char *v4l2_norm_to_name(v4l2_std_id id) 84 { 85 u32 myid = id; 86 int i; 87 88 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle 89 64 bit comparisons. So, on that architecture, with some gcc 90 variants, compilation fails. Currently, the max value is 30bit wide. 91 */ 92 BUG_ON(myid != id); 93 94 for (i = 0; standards[i].std; i++) 95 if (myid == standards[i].std) 96 break; 97 return standards[i].descr; 98 } 99 EXPORT_SYMBOL(v4l2_norm_to_name); 100 101 /* Returns frame period for the given standard */ 102 void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod) 103 { 104 if (id & V4L2_STD_525_60) { 105 frameperiod->numerator = 1001; 106 frameperiod->denominator = 30000; 107 } else { 108 frameperiod->numerator = 1; 109 frameperiod->denominator = 25; 110 } 111 } 112 EXPORT_SYMBOL(v4l2_video_std_frame_period); 113 114 /* Fill in the fields of a v4l2_standard structure according to the 115 'id' and 'transmission' parameters. Returns negative on error. */ 116 int v4l2_video_std_construct(struct v4l2_standard *vs, 117 int id, const char *name) 118 { 119 vs->id = id; 120 v4l2_video_std_frame_period(id, &vs->frameperiod); 121 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625; 122 strscpy(vs->name, name, sizeof(vs->name)); 123 return 0; 124 } 125 EXPORT_SYMBOL(v4l2_video_std_construct); 126 127 /* Fill in the fields of a v4l2_standard structure according to the 128 * 'id' and 'vs->index' parameters. Returns negative on error. */ 129 int v4l_video_std_enumstd(struct v4l2_standard *vs, v4l2_std_id id) 130 { 131 v4l2_std_id curr_id = 0; 132 unsigned int index = vs->index, i, j = 0; 133 const char *descr = ""; 134 135 /* Return -ENODATA if the id for the current input 136 or output is 0, meaning that it doesn't support this API. */ 137 if (id == 0) 138 return -ENODATA; 139 140 /* Return norm array in a canonical way */ 141 for (i = 0; i <= index && id; i++) { 142 /* last std value in the standards array is 0, so this 143 while always ends there since (id & 0) == 0. */ 144 while ((id & standards[j].std) != standards[j].std) 145 j++; 146 curr_id = standards[j].std; 147 descr = standards[j].descr; 148 j++; 149 if (curr_id == 0) 150 break; 151 if (curr_id != V4L2_STD_PAL && 152 curr_id != V4L2_STD_SECAM && 153 curr_id != V4L2_STD_NTSC) 154 id &= ~curr_id; 155 } 156 if (i <= index) 157 return -EINVAL; 158 159 v4l2_video_std_construct(vs, curr_id, descr); 160 return 0; 161 } 162 163 /* ----------------------------------------------------------------- */ 164 /* some arrays for pretty-printing debug messages of enum types */ 165 166 const char *v4l2_field_names[] = { 167 [V4L2_FIELD_ANY] = "any", 168 [V4L2_FIELD_NONE] = "none", 169 [V4L2_FIELD_TOP] = "top", 170 [V4L2_FIELD_BOTTOM] = "bottom", 171 [V4L2_FIELD_INTERLACED] = "interlaced", 172 [V4L2_FIELD_SEQ_TB] = "seq-tb", 173 [V4L2_FIELD_SEQ_BT] = "seq-bt", 174 [V4L2_FIELD_ALTERNATE] = "alternate", 175 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb", 176 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt", 177 }; 178 EXPORT_SYMBOL(v4l2_field_names); 179 180 const char *v4l2_type_names[] = { 181 [0] = "0", 182 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap", 183 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay", 184 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out", 185 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap", 186 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out", 187 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap", 188 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out", 189 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay", 190 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane", 191 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane", 192 [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap", 193 [V4L2_BUF_TYPE_SDR_OUTPUT] = "sdr-out", 194 [V4L2_BUF_TYPE_META_CAPTURE] = "meta-cap", 195 [V4L2_BUF_TYPE_META_OUTPUT] = "meta-out", 196 }; 197 EXPORT_SYMBOL(v4l2_type_names); 198 199 static const char *v4l2_memory_names[] = { 200 [V4L2_MEMORY_MMAP] = "mmap", 201 [V4L2_MEMORY_USERPTR] = "userptr", 202 [V4L2_MEMORY_OVERLAY] = "overlay", 203 [V4L2_MEMORY_DMABUF] = "dmabuf", 204 }; 205 206 #define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown") 207 208 /* ------------------------------------------------------------------ */ 209 /* debug help functions */ 210 211 static void v4l_print_querycap(const void *arg, bool write_only) 212 { 213 const struct v4l2_capability *p = arg; 214 215 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, capabilities=0x%08x, device_caps=0x%08x\n", 216 (int)sizeof(p->driver), p->driver, 217 (int)sizeof(p->card), p->card, 218 (int)sizeof(p->bus_info), p->bus_info, 219 p->version, p->capabilities, p->device_caps); 220 } 221 222 static void v4l_print_enuminput(const void *arg, bool write_only) 223 { 224 const struct v4l2_input *p = arg; 225 226 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, std=0x%08Lx, status=0x%x, capabilities=0x%x\n", 227 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, 228 p->tuner, (unsigned long long)p->std, p->status, 229 p->capabilities); 230 } 231 232 static void v4l_print_enumoutput(const void *arg, bool write_only) 233 { 234 const struct v4l2_output *p = arg; 235 236 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, modulator=%u, std=0x%08Lx, capabilities=0x%x\n", 237 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, 238 p->modulator, (unsigned long long)p->std, p->capabilities); 239 } 240 241 static void v4l_print_audio(const void *arg, bool write_only) 242 { 243 const struct v4l2_audio *p = arg; 244 245 if (write_only) 246 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode); 247 else 248 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", 249 p->index, (int)sizeof(p->name), p->name, 250 p->capability, p->mode); 251 } 252 253 static void v4l_print_audioout(const void *arg, bool write_only) 254 { 255 const struct v4l2_audioout *p = arg; 256 257 if (write_only) 258 pr_cont("index=%u\n", p->index); 259 else 260 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", 261 p->index, (int)sizeof(p->name), p->name, 262 p->capability, p->mode); 263 } 264 265 static void v4l_print_fmtdesc(const void *arg, bool write_only) 266 { 267 const struct v4l2_fmtdesc *p = arg; 268 269 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%p4cc, mbus_code=0x%04x, description='%.*s'\n", 270 p->index, prt_names(p->type, v4l2_type_names), 271 p->flags, &p->pixelformat, p->mbus_code, 272 (int)sizeof(p->description), p->description); 273 } 274 275 static void v4l_print_format(const void *arg, bool write_only) 276 { 277 const struct v4l2_format *p = arg; 278 const struct v4l2_pix_format *pix; 279 const struct v4l2_pix_format_mplane *mp; 280 const struct v4l2_vbi_format *vbi; 281 const struct v4l2_sliced_vbi_format *sliced; 282 const struct v4l2_window *win; 283 const struct v4l2_meta_format *meta; 284 u32 pixelformat; 285 u32 planes; 286 unsigned i; 287 288 pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); 289 switch (p->type) { 290 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 291 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 292 pix = &p->fmt.pix; 293 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", 294 pix->width, pix->height, &pix->pixelformat, 295 prt_names(pix->field, v4l2_field_names), 296 pix->bytesperline, pix->sizeimage, 297 pix->colorspace, pix->flags, pix->ycbcr_enc, 298 pix->quantization, pix->xfer_func); 299 break; 300 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 301 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 302 mp = &p->fmt.pix_mp; 303 pixelformat = mp->pixelformat; 304 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", 305 mp->width, mp->height, &pixelformat, 306 prt_names(mp->field, v4l2_field_names), 307 mp->colorspace, mp->num_planes, mp->flags, 308 mp->ycbcr_enc, mp->quantization, mp->xfer_func); 309 planes = min_t(u32, mp->num_planes, VIDEO_MAX_PLANES); 310 for (i = 0; i < planes; i++) 311 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i, 312 mp->plane_fmt[i].bytesperline, 313 mp->plane_fmt[i].sizeimage); 314 break; 315 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 316 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 317 win = &p->fmt.win; 318 /* Note: we can't print the clip list here since the clips 319 * pointer is a userspace pointer, not a kernelspace 320 * pointer. */ 321 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", 322 win->w.width, win->w.height, win->w.left, win->w.top, 323 prt_names(win->field, v4l2_field_names), 324 win->chromakey, win->clipcount, win->clips, 325 win->bitmap, win->global_alpha); 326 break; 327 case V4L2_BUF_TYPE_VBI_CAPTURE: 328 case V4L2_BUF_TYPE_VBI_OUTPUT: 329 vbi = &p->fmt.vbi; 330 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%p4cc, start=%u,%u, count=%u,%u\n", 331 vbi->sampling_rate, vbi->offset, 332 vbi->samples_per_line, &vbi->sample_format, 333 vbi->start[0], vbi->start[1], 334 vbi->count[0], vbi->count[1]); 335 break; 336 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 337 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 338 sliced = &p->fmt.sliced; 339 pr_cont(", service_set=0x%08x, io_size=%d\n", 340 sliced->service_set, sliced->io_size); 341 for (i = 0; i < 24; i++) 342 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, 343 sliced->service_lines[0][i], 344 sliced->service_lines[1][i]); 345 break; 346 case V4L2_BUF_TYPE_SDR_CAPTURE: 347 case V4L2_BUF_TYPE_SDR_OUTPUT: 348 pixelformat = p->fmt.sdr.pixelformat; 349 pr_cont(", pixelformat=%p4cc\n", &pixelformat); 350 break; 351 case V4L2_BUF_TYPE_META_CAPTURE: 352 case V4L2_BUF_TYPE_META_OUTPUT: 353 meta = &p->fmt.meta; 354 pixelformat = meta->dataformat; 355 pr_cont(", dataformat=%p4cc, buffersize=%u\n", 356 &pixelformat, meta->buffersize); 357 break; 358 } 359 } 360 361 static void v4l_print_framebuffer(const void *arg, bool write_only) 362 { 363 const struct v4l2_framebuffer *p = arg; 364 365 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, height=%u, pixelformat=%p4cc, bytesperline=%u, sizeimage=%u, colorspace=%d\n", 366 p->capability, p->flags, p->base, p->fmt.width, p->fmt.height, 367 &p->fmt.pixelformat, p->fmt.bytesperline, p->fmt.sizeimage, 368 p->fmt.colorspace); 369 } 370 371 static void v4l_print_buftype(const void *arg, bool write_only) 372 { 373 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names)); 374 } 375 376 static void v4l_print_modulator(const void *arg, bool write_only) 377 { 378 const struct v4l2_modulator *p = arg; 379 380 if (write_only) 381 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans); 382 else 383 pr_cont("index=%u, name=%.*s, capability=0x%x, rangelow=%u, rangehigh=%u, txsubchans=0x%x\n", 384 p->index, (int)sizeof(p->name), p->name, p->capability, 385 p->rangelow, p->rangehigh, p->txsubchans); 386 } 387 388 static void v4l_print_tuner(const void *arg, bool write_only) 389 { 390 const struct v4l2_tuner *p = arg; 391 392 if (write_only) 393 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode); 394 else 395 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", 396 p->index, (int)sizeof(p->name), p->name, p->type, 397 p->capability, p->rangelow, 398 p->rangehigh, p->signal, p->afc, 399 p->rxsubchans, p->audmode); 400 } 401 402 static void v4l_print_frequency(const void *arg, bool write_only) 403 { 404 const struct v4l2_frequency *p = arg; 405 406 pr_cont("tuner=%u, type=%u, frequency=%u\n", 407 p->tuner, p->type, p->frequency); 408 } 409 410 static void v4l_print_standard(const void *arg, bool write_only) 411 { 412 const struct v4l2_standard *p = arg; 413 414 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, framelines=%u\n", 415 p->index, 416 (unsigned long long)p->id, (int)sizeof(p->name), p->name, 417 p->frameperiod.numerator, 418 p->frameperiod.denominator, 419 p->framelines); 420 } 421 422 static void v4l_print_std(const void *arg, bool write_only) 423 { 424 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg); 425 } 426 427 static void v4l_print_hw_freq_seek(const void *arg, bool write_only) 428 { 429 const struct v4l2_hw_freq_seek *p = arg; 430 431 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, rangelow=%u, rangehigh=%u\n", 432 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing, 433 p->rangelow, p->rangehigh); 434 } 435 436 static void v4l_print_requestbuffers(const void *arg, bool write_only) 437 { 438 const struct v4l2_requestbuffers *p = arg; 439 440 pr_cont("count=%d, type=%s, memory=%s\n", 441 p->count, 442 prt_names(p->type, v4l2_type_names), 443 prt_names(p->memory, v4l2_memory_names)); 444 } 445 446 static void v4l_print_buffer(const void *arg, bool write_only) 447 { 448 const struct v4l2_buffer *p = arg; 449 const struct v4l2_timecode *tc = &p->timecode; 450 const struct v4l2_plane *plane; 451 int i; 452 453 pr_cont("%02d:%02d:%02d.%06ld index=%d, type=%s, request_fd=%d, flags=0x%08x, field=%s, sequence=%d, memory=%s", 454 (int)p->timestamp.tv_sec / 3600, 455 ((int)p->timestamp.tv_sec / 60) % 60, 456 ((int)p->timestamp.tv_sec % 60), 457 (long)p->timestamp.tv_usec, 458 p->index, 459 prt_names(p->type, v4l2_type_names), p->request_fd, 460 p->flags, prt_names(p->field, v4l2_field_names), 461 p->sequence, prt_names(p->memory, v4l2_memory_names)); 462 463 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) { 464 pr_cont("\n"); 465 for (i = 0; i < p->length; ++i) { 466 plane = &p->m.planes[i]; 467 printk(KERN_DEBUG 468 "plane %d: bytesused=%d, data_offset=0x%08x, offset/userptr=0x%lx, length=%d\n", 469 i, plane->bytesused, plane->data_offset, 470 plane->m.userptr, plane->length); 471 } 472 } else { 473 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n", 474 p->bytesused, p->m.userptr, p->length); 475 } 476 477 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, flags=0x%08x, frames=%d, userbits=0x%08x\n", 478 tc->hours, tc->minutes, tc->seconds, 479 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits); 480 } 481 482 static void v4l_print_exportbuffer(const void *arg, bool write_only) 483 { 484 const struct v4l2_exportbuffer *p = arg; 485 486 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n", 487 p->fd, prt_names(p->type, v4l2_type_names), 488 p->index, p->plane, p->flags); 489 } 490 491 static void v4l_print_create_buffers(const void *arg, bool write_only) 492 { 493 const struct v4l2_create_buffers *p = arg; 494 495 pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, ", 496 p->index, p->count, prt_names(p->memory, v4l2_memory_names), 497 p->capabilities); 498 v4l_print_format(&p->format, write_only); 499 } 500 501 static void v4l_print_streamparm(const void *arg, bool write_only) 502 { 503 const struct v4l2_streamparm *p = arg; 504 505 pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); 506 507 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 508 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) { 509 const struct v4l2_captureparm *c = &p->parm.capture; 510 511 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, extendedmode=%d, readbuffers=%d\n", 512 c->capability, c->capturemode, 513 c->timeperframe.numerator, c->timeperframe.denominator, 514 c->extendedmode, c->readbuffers); 515 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT || 516 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { 517 const struct v4l2_outputparm *c = &p->parm.output; 518 519 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, extendedmode=%d, writebuffers=%d\n", 520 c->capability, c->outputmode, 521 c->timeperframe.numerator, c->timeperframe.denominator, 522 c->extendedmode, c->writebuffers); 523 } else { 524 pr_cont("\n"); 525 } 526 } 527 528 static void v4l_print_queryctrl(const void *arg, bool write_only) 529 { 530 const struct v4l2_queryctrl *p = arg; 531 532 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, step=%d, default=%d, flags=0x%08x\n", 533 p->id, p->type, (int)sizeof(p->name), p->name, 534 p->minimum, p->maximum, 535 p->step, p->default_value, p->flags); 536 } 537 538 static void v4l_print_query_ext_ctrl(const void *arg, bool write_only) 539 { 540 const struct v4l2_query_ext_ctrl *p = arg; 541 542 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", 543 p->id, p->type, (int)sizeof(p->name), p->name, 544 p->minimum, p->maximum, 545 p->step, p->default_value, p->flags, 546 p->elem_size, p->elems, p->nr_of_dims, 547 p->dims[0], p->dims[1], p->dims[2], p->dims[3]); 548 } 549 550 static void v4l_print_querymenu(const void *arg, bool write_only) 551 { 552 const struct v4l2_querymenu *p = arg; 553 554 pr_cont("id=0x%x, index=%d\n", p->id, p->index); 555 } 556 557 static void v4l_print_control(const void *arg, bool write_only) 558 { 559 const struct v4l2_control *p = arg; 560 const char *name = v4l2_ctrl_get_name(p->id); 561 562 if (name) 563 pr_cont("name=%s, ", name); 564 pr_cont("id=0x%x, value=%d\n", p->id, p->value); 565 } 566 567 static void v4l_print_ext_controls(const void *arg, bool write_only) 568 { 569 const struct v4l2_ext_controls *p = arg; 570 int i; 571 572 pr_cont("which=0x%x, count=%d, error_idx=%d, request_fd=%d", 573 p->which, p->count, p->error_idx, p->request_fd); 574 for (i = 0; i < p->count; i++) { 575 unsigned int id = p->controls[i].id; 576 const char *name = v4l2_ctrl_get_name(id); 577 578 if (name) 579 pr_cont(", name=%s", name); 580 if (!p->controls[i].size) 581 pr_cont(", id/val=0x%x/0x%x", id, p->controls[i].value); 582 else 583 pr_cont(", id/size=0x%x/%u", id, p->controls[i].size); 584 } 585 pr_cont("\n"); 586 } 587 588 static void v4l_print_cropcap(const void *arg, bool write_only) 589 { 590 const struct v4l2_cropcap *p = arg; 591 592 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, defrect wxh=%dx%d, x,y=%d,%d, pixelaspect %d/%d\n", 593 prt_names(p->type, v4l2_type_names), 594 p->bounds.width, p->bounds.height, 595 p->bounds.left, p->bounds.top, 596 p->defrect.width, p->defrect.height, 597 p->defrect.left, p->defrect.top, 598 p->pixelaspect.numerator, p->pixelaspect.denominator); 599 } 600 601 static void v4l_print_crop(const void *arg, bool write_only) 602 { 603 const struct v4l2_crop *p = arg; 604 605 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n", 606 prt_names(p->type, v4l2_type_names), 607 p->c.width, p->c.height, 608 p->c.left, p->c.top); 609 } 610 611 static void v4l_print_selection(const void *arg, bool write_only) 612 { 613 const struct v4l2_selection *p = arg; 614 615 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n", 616 prt_names(p->type, v4l2_type_names), 617 p->target, p->flags, 618 p->r.width, p->r.height, p->r.left, p->r.top); 619 } 620 621 static void v4l_print_jpegcompression(const void *arg, bool write_only) 622 { 623 const struct v4l2_jpegcompression *p = arg; 624 625 pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n", 626 p->quality, p->APPn, p->APP_len, 627 p->COM_len, p->jpeg_markers); 628 } 629 630 static void v4l_print_enc_idx(const void *arg, bool write_only) 631 { 632 const struct v4l2_enc_idx *p = arg; 633 634 pr_cont("entries=%d, entries_cap=%d\n", 635 p->entries, p->entries_cap); 636 } 637 638 static void v4l_print_encoder_cmd(const void *arg, bool write_only) 639 { 640 const struct v4l2_encoder_cmd *p = arg; 641 642 pr_cont("cmd=%d, flags=0x%x\n", 643 p->cmd, p->flags); 644 } 645 646 static void v4l_print_decoder_cmd(const void *arg, bool write_only) 647 { 648 const struct v4l2_decoder_cmd *p = arg; 649 650 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags); 651 652 if (p->cmd == V4L2_DEC_CMD_START) 653 pr_info("speed=%d, format=%u\n", 654 p->start.speed, p->start.format); 655 else if (p->cmd == V4L2_DEC_CMD_STOP) 656 pr_info("pts=%llu\n", p->stop.pts); 657 } 658 659 static void v4l_print_dbg_chip_info(const void *arg, bool write_only) 660 { 661 const struct v4l2_dbg_chip_info *p = arg; 662 663 pr_cont("type=%u, ", p->match.type); 664 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 665 pr_cont("name=%.*s, ", 666 (int)sizeof(p->match.name), p->match.name); 667 else 668 pr_cont("addr=%u, ", p->match.addr); 669 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name); 670 } 671 672 static void v4l_print_dbg_register(const void *arg, bool write_only) 673 { 674 const struct v4l2_dbg_register *p = arg; 675 676 pr_cont("type=%u, ", p->match.type); 677 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 678 pr_cont("name=%.*s, ", 679 (int)sizeof(p->match.name), p->match.name); 680 else 681 pr_cont("addr=%u, ", p->match.addr); 682 pr_cont("reg=0x%llx, val=0x%llx\n", 683 p->reg, p->val); 684 } 685 686 static void v4l_print_dv_timings(const void *arg, bool write_only) 687 { 688 const struct v4l2_dv_timings *p = arg; 689 690 switch (p->type) { 691 case V4L2_DV_BT_656_1120: 692 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", 693 p->bt.interlaced, p->bt.pixelclock, 694 p->bt.width, p->bt.height, 695 p->bt.polarities, p->bt.hfrontporch, 696 p->bt.hsync, p->bt.hbackporch, 697 p->bt.vfrontporch, p->bt.vsync, 698 p->bt.vbackporch, p->bt.il_vfrontporch, 699 p->bt.il_vsync, p->bt.il_vbackporch, 700 p->bt.standards, p->bt.flags); 701 break; 702 default: 703 pr_cont("type=%d\n", p->type); 704 break; 705 } 706 } 707 708 static void v4l_print_enum_dv_timings(const void *arg, bool write_only) 709 { 710 const struct v4l2_enum_dv_timings *p = arg; 711 712 pr_cont("index=%u, ", p->index); 713 v4l_print_dv_timings(&p->timings, write_only); 714 } 715 716 static void v4l_print_dv_timings_cap(const void *arg, bool write_only) 717 { 718 const struct v4l2_dv_timings_cap *p = arg; 719 720 switch (p->type) { 721 case V4L2_DV_BT_656_1120: 722 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n", 723 p->bt.min_width, p->bt.max_width, 724 p->bt.min_height, p->bt.max_height, 725 p->bt.min_pixelclock, p->bt.max_pixelclock, 726 p->bt.standards, p->bt.capabilities); 727 break; 728 default: 729 pr_cont("type=%u\n", p->type); 730 break; 731 } 732 } 733 734 static void v4l_print_frmsizeenum(const void *arg, bool write_only) 735 { 736 const struct v4l2_frmsizeenum *p = arg; 737 738 pr_cont("index=%u, pixelformat=%p4cc, type=%u", 739 p->index, &p->pixel_format, p->type); 740 switch (p->type) { 741 case V4L2_FRMSIZE_TYPE_DISCRETE: 742 pr_cont(", wxh=%ux%u\n", 743 p->discrete.width, p->discrete.height); 744 break; 745 case V4L2_FRMSIZE_TYPE_STEPWISE: 746 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n", 747 p->stepwise.min_width, 748 p->stepwise.min_height, 749 p->stepwise.max_width, 750 p->stepwise.max_height, 751 p->stepwise.step_width, 752 p->stepwise.step_height); 753 break; 754 case V4L2_FRMSIZE_TYPE_CONTINUOUS: 755 default: 756 pr_cont("\n"); 757 break; 758 } 759 } 760 761 static void v4l_print_frmivalenum(const void *arg, bool write_only) 762 { 763 const struct v4l2_frmivalenum *p = arg; 764 765 pr_cont("index=%u, pixelformat=%p4cc, wxh=%ux%u, type=%u", 766 p->index, &p->pixel_format, p->width, p->height, p->type); 767 switch (p->type) { 768 case V4L2_FRMIVAL_TYPE_DISCRETE: 769 pr_cont(", fps=%d/%d\n", 770 p->discrete.numerator, 771 p->discrete.denominator); 772 break; 773 case V4L2_FRMIVAL_TYPE_STEPWISE: 774 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n", 775 p->stepwise.min.numerator, 776 p->stepwise.min.denominator, 777 p->stepwise.max.numerator, 778 p->stepwise.max.denominator, 779 p->stepwise.step.numerator, 780 p->stepwise.step.denominator); 781 break; 782 case V4L2_FRMIVAL_TYPE_CONTINUOUS: 783 default: 784 pr_cont("\n"); 785 break; 786 } 787 } 788 789 static void v4l_print_event(const void *arg, bool write_only) 790 { 791 const struct v4l2_event *p = arg; 792 const struct v4l2_event_ctrl *c; 793 794 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%llu.%9.9llu\n", 795 p->type, p->pending, p->sequence, p->id, 796 p->timestamp.tv_sec, p->timestamp.tv_nsec); 797 switch (p->type) { 798 case V4L2_EVENT_VSYNC: 799 printk(KERN_DEBUG "field=%s\n", 800 prt_names(p->u.vsync.field, v4l2_field_names)); 801 break; 802 case V4L2_EVENT_CTRL: 803 c = &p->u.ctrl; 804 printk(KERN_DEBUG "changes=0x%x, type=%u, ", 805 c->changes, c->type); 806 if (c->type == V4L2_CTRL_TYPE_INTEGER64) 807 pr_cont("value64=%lld, ", c->value64); 808 else 809 pr_cont("value=%d, ", c->value); 810 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n", 811 c->flags, c->minimum, c->maximum, 812 c->step, c->default_value); 813 break; 814 case V4L2_EVENT_FRAME_SYNC: 815 pr_cont("frame_sequence=%u\n", 816 p->u.frame_sync.frame_sequence); 817 break; 818 } 819 } 820 821 static void v4l_print_event_subscription(const void *arg, bool write_only) 822 { 823 const struct v4l2_event_subscription *p = arg; 824 825 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n", 826 p->type, p->id, p->flags); 827 } 828 829 static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only) 830 { 831 const struct v4l2_sliced_vbi_cap *p = arg; 832 int i; 833 834 pr_cont("type=%s, service_set=0x%08x\n", 835 prt_names(p->type, v4l2_type_names), p->service_set); 836 for (i = 0; i < 24; i++) 837 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, 838 p->service_lines[0][i], 839 p->service_lines[1][i]); 840 } 841 842 static void v4l_print_freq_band(const void *arg, bool write_only) 843 { 844 const struct v4l2_frequency_band *p = arg; 845 846 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n", 847 p->tuner, p->type, p->index, 848 p->capability, p->rangelow, 849 p->rangehigh, p->modulation); 850 } 851 852 static void v4l_print_edid(const void *arg, bool write_only) 853 { 854 const struct v4l2_edid *p = arg; 855 856 pr_cont("pad=%u, start_block=%u, blocks=%u\n", 857 p->pad, p->start_block, p->blocks); 858 } 859 860 static void v4l_print_u32(const void *arg, bool write_only) 861 { 862 pr_cont("value=%u\n", *(const u32 *)arg); 863 } 864 865 static void v4l_print_newline(const void *arg, bool write_only) 866 { 867 pr_cont("\n"); 868 } 869 870 static void v4l_print_default(const void *arg, bool write_only) 871 { 872 pr_cont("driver-specific ioctl\n"); 873 } 874 875 static bool check_ext_ctrls(struct v4l2_ext_controls *c, unsigned long ioctl) 876 { 877 __u32 i; 878 879 /* zero the reserved fields */ 880 c->reserved[0] = 0; 881 for (i = 0; i < c->count; i++) 882 c->controls[i].reserved2[0] = 0; 883 884 switch (c->which) { 885 case V4L2_CID_PRIVATE_BASE: 886 /* 887 * V4L2_CID_PRIVATE_BASE cannot be used as control class 888 * when using extended controls. 889 * Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL 890 * is it allowed for backwards compatibility. 891 */ 892 if (ioctl == VIDIOC_G_CTRL || ioctl == VIDIOC_S_CTRL) 893 return false; 894 break; 895 case V4L2_CTRL_WHICH_DEF_VAL: 896 /* Default value cannot be changed */ 897 if (ioctl == VIDIOC_S_EXT_CTRLS || 898 ioctl == VIDIOC_TRY_EXT_CTRLS) { 899 c->error_idx = c->count; 900 return false; 901 } 902 return true; 903 case V4L2_CTRL_WHICH_CUR_VAL: 904 return true; 905 case V4L2_CTRL_WHICH_REQUEST_VAL: 906 c->error_idx = c->count; 907 return false; 908 } 909 910 /* Check that all controls are from the same control class. */ 911 for (i = 0; i < c->count; i++) { 912 if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) { 913 c->error_idx = ioctl == VIDIOC_TRY_EXT_CTRLS ? i : 914 c->count; 915 return false; 916 } 917 } 918 return true; 919 } 920 921 static int check_fmt(struct file *file, enum v4l2_buf_type type) 922 { 923 const u32 vid_caps = V4L2_CAP_VIDEO_CAPTURE | 924 V4L2_CAP_VIDEO_CAPTURE_MPLANE | 925 V4L2_CAP_VIDEO_OUTPUT | 926 V4L2_CAP_VIDEO_OUTPUT_MPLANE | 927 V4L2_CAP_VIDEO_M2M | V4L2_CAP_VIDEO_M2M_MPLANE; 928 const u32 meta_caps = V4L2_CAP_META_CAPTURE | 929 V4L2_CAP_META_OUTPUT; 930 struct video_device *vfd = video_devdata(file); 931 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 932 bool is_vid = vfd->vfl_type == VFL_TYPE_VIDEO && 933 (vfd->device_caps & vid_caps); 934 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI; 935 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; 936 bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; 937 bool is_meta = vfd->vfl_type == VFL_TYPE_VIDEO && 938 (vfd->device_caps & meta_caps); 939 bool is_rx = vfd->vfl_dir != VFL_DIR_TX; 940 bool is_tx = vfd->vfl_dir != VFL_DIR_RX; 941 942 if (ops == NULL) 943 return -EINVAL; 944 945 switch (type) { 946 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 947 if ((is_vid || is_tch) && is_rx && 948 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane)) 949 return 0; 950 break; 951 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 952 if ((is_vid || is_tch) && is_rx && ops->vidioc_g_fmt_vid_cap_mplane) 953 return 0; 954 break; 955 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 956 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay) 957 return 0; 958 break; 959 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 960 if (is_vid && is_tx && 961 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane)) 962 return 0; 963 break; 964 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 965 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane) 966 return 0; 967 break; 968 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 969 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay) 970 return 0; 971 break; 972 case V4L2_BUF_TYPE_VBI_CAPTURE: 973 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap) 974 return 0; 975 break; 976 case V4L2_BUF_TYPE_VBI_OUTPUT: 977 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out) 978 return 0; 979 break; 980 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 981 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap) 982 return 0; 983 break; 984 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 985 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out) 986 return 0; 987 break; 988 case V4L2_BUF_TYPE_SDR_CAPTURE: 989 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap) 990 return 0; 991 break; 992 case V4L2_BUF_TYPE_SDR_OUTPUT: 993 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out) 994 return 0; 995 break; 996 case V4L2_BUF_TYPE_META_CAPTURE: 997 if (is_meta && is_rx && ops->vidioc_g_fmt_meta_cap) 998 return 0; 999 break; 1000 case V4L2_BUF_TYPE_META_OUTPUT: 1001 if (is_meta && is_tx && ops->vidioc_g_fmt_meta_out) 1002 return 0; 1003 break; 1004 default: 1005 break; 1006 } 1007 return -EINVAL; 1008 } 1009 1010 static void v4l_sanitize_format(struct v4l2_format *fmt) 1011 { 1012 unsigned int offset; 1013 1014 /* Make sure num_planes is not bogus */ 1015 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE || 1016 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 1017 fmt->fmt.pix_mp.num_planes = min_t(u32, fmt->fmt.pix_mp.num_planes, 1018 VIDEO_MAX_PLANES); 1019 1020 /* 1021 * The v4l2_pix_format structure has been extended with fields that were 1022 * not previously required to be set to zero by applications. The priv 1023 * field, when set to a magic value, indicates the the extended fields 1024 * are valid. Otherwise they will contain undefined values. To simplify 1025 * the API towards drivers zero the extended fields and set the priv 1026 * field to the magic value when the extended pixel format structure 1027 * isn't used by applications. 1028 */ 1029 1030 if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && 1031 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) 1032 return; 1033 1034 if (fmt->fmt.pix.priv == V4L2_PIX_FMT_PRIV_MAGIC) 1035 return; 1036 1037 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1038 1039 offset = offsetof(struct v4l2_pix_format, priv) 1040 + sizeof(fmt->fmt.pix.priv); 1041 memset(((void *)&fmt->fmt.pix) + offset, 0, 1042 sizeof(fmt->fmt.pix) - offset); 1043 } 1044 1045 static int v4l_querycap(const struct v4l2_ioctl_ops *ops, 1046 struct file *file, void *fh, void *arg) 1047 { 1048 struct v4l2_capability *cap = (struct v4l2_capability *)arg; 1049 struct video_device *vfd = video_devdata(file); 1050 int ret; 1051 1052 cap->version = LINUX_VERSION_CODE; 1053 cap->device_caps = vfd->device_caps; 1054 cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS; 1055 1056 media_set_bus_info(cap->bus_info, sizeof(cap->bus_info), 1057 vfd->dev_parent); 1058 1059 ret = ops->vidioc_querycap(file, fh, cap); 1060 1061 /* 1062 * Drivers must not change device_caps, so check for this and 1063 * warn if this happened. 1064 */ 1065 WARN_ON(cap->device_caps != vfd->device_caps); 1066 /* 1067 * Check that capabilities is a superset of 1068 * vfd->device_caps | V4L2_CAP_DEVICE_CAPS 1069 */ 1070 WARN_ON((cap->capabilities & 1071 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)) != 1072 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)); 1073 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT; 1074 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT; 1075 1076 return ret; 1077 } 1078 1079 static int v4l_g_input(const struct v4l2_ioctl_ops *ops, 1080 struct file *file, void *fh, void *arg) 1081 { 1082 struct video_device *vfd = video_devdata(file); 1083 1084 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1085 *(int *)arg = 0; 1086 return 0; 1087 } 1088 1089 return ops->vidioc_g_input(file, fh, arg); 1090 } 1091 1092 static int v4l_g_output(const struct v4l2_ioctl_ops *ops, 1093 struct file *file, void *fh, void *arg) 1094 { 1095 struct video_device *vfd = video_devdata(file); 1096 1097 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1098 *(int *)arg = 0; 1099 return 0; 1100 } 1101 1102 return ops->vidioc_g_output(file, fh, arg); 1103 } 1104 1105 static int v4l_s_input(const struct v4l2_ioctl_ops *ops, 1106 struct file *file, void *fh, void *arg) 1107 { 1108 struct video_device *vfd = video_devdata(file); 1109 int ret; 1110 1111 ret = v4l_enable_media_source(vfd); 1112 if (ret) 1113 return ret; 1114 1115 if (vfd->device_caps & V4L2_CAP_IO_MC) 1116 return *(int *)arg ? -EINVAL : 0; 1117 1118 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg); 1119 } 1120 1121 static int v4l_s_output(const struct v4l2_ioctl_ops *ops, 1122 struct file *file, void *fh, void *arg) 1123 { 1124 struct video_device *vfd = video_devdata(file); 1125 1126 if (vfd->device_caps & V4L2_CAP_IO_MC) 1127 return *(int *)arg ? -EINVAL : 0; 1128 1129 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg); 1130 } 1131 1132 static int v4l_g_priority(const struct v4l2_ioctl_ops *ops, 1133 struct file *file, void *fh, void *arg) 1134 { 1135 struct video_device *vfd; 1136 u32 *p = arg; 1137 1138 vfd = video_devdata(file); 1139 *p = v4l2_prio_max(vfd->prio); 1140 return 0; 1141 } 1142 1143 static int v4l_s_priority(const struct v4l2_ioctl_ops *ops, 1144 struct file *file, void *fh, void *arg) 1145 { 1146 struct video_device *vfd; 1147 struct v4l2_fh *vfh; 1148 u32 *p = arg; 1149 1150 vfd = video_devdata(file); 1151 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 1152 return -ENOTTY; 1153 vfh = file->private_data; 1154 return v4l2_prio_change(vfd->prio, &vfh->prio, *p); 1155 } 1156 1157 static int v4l_enuminput(const struct v4l2_ioctl_ops *ops, 1158 struct file *file, void *fh, void *arg) 1159 { 1160 struct video_device *vfd = video_devdata(file); 1161 struct v4l2_input *p = arg; 1162 1163 /* 1164 * We set the flags for CAP_DV_TIMINGS & 1165 * CAP_STD here based on ioctl handler provided by the 1166 * driver. If the driver doesn't support these 1167 * for a specific input, it must override these flags. 1168 */ 1169 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1170 p->capabilities |= V4L2_IN_CAP_STD; 1171 1172 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1173 if (p->index) 1174 return -EINVAL; 1175 strscpy(p->name, vfd->name, sizeof(p->name)); 1176 p->type = V4L2_INPUT_TYPE_CAMERA; 1177 return 0; 1178 } 1179 1180 return ops->vidioc_enum_input(file, fh, p); 1181 } 1182 1183 static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops, 1184 struct file *file, void *fh, void *arg) 1185 { 1186 struct video_device *vfd = video_devdata(file); 1187 struct v4l2_output *p = arg; 1188 1189 /* 1190 * We set the flags for CAP_DV_TIMINGS & 1191 * CAP_STD here based on ioctl handler provided by the 1192 * driver. If the driver doesn't support these 1193 * for a specific output, it must override these flags. 1194 */ 1195 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1196 p->capabilities |= V4L2_OUT_CAP_STD; 1197 1198 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1199 if (p->index) 1200 return -EINVAL; 1201 strscpy(p->name, vfd->name, sizeof(p->name)); 1202 p->type = V4L2_OUTPUT_TYPE_ANALOG; 1203 return 0; 1204 } 1205 1206 return ops->vidioc_enum_output(file, fh, p); 1207 } 1208 1209 static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) 1210 { 1211 const unsigned sz = sizeof(fmt->description); 1212 const char *descr = NULL; 1213 u32 flags = 0; 1214 1215 /* 1216 * We depart from the normal coding style here since the descriptions 1217 * should be aligned so it is easy to see which descriptions will be 1218 * longer than 31 characters (the max length for a description). 1219 * And frankly, this is easier to read anyway. 1220 * 1221 * Note that gcc will use O(log N) comparisons to find the right case. 1222 */ 1223 switch (fmt->pixelformat) { 1224 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1225 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break; 1226 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break; 1227 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break; 1228 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break; 1229 case V4L2_PIX_FMT_RGBA444: descr = "16-bit RGBA 4-4-4-4"; break; 1230 case V4L2_PIX_FMT_RGBX444: descr = "16-bit RGBX 4-4-4-4"; break; 1231 case V4L2_PIX_FMT_ABGR444: descr = "16-bit ABGR 4-4-4-4"; break; 1232 case V4L2_PIX_FMT_XBGR444: descr = "16-bit XBGR 4-4-4-4"; break; 1233 case V4L2_PIX_FMT_BGRA444: descr = "16-bit BGRA 4-4-4-4"; break; 1234 case V4L2_PIX_FMT_BGRX444: descr = "16-bit BGRX 4-4-4-4"; break; 1235 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break; 1236 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break; 1237 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break; 1238 case V4L2_PIX_FMT_ABGR555: descr = "16-bit ABGR 1-5-5-5"; break; 1239 case V4L2_PIX_FMT_XBGR555: descr = "16-bit XBGR 1-5-5-5"; break; 1240 case V4L2_PIX_FMT_RGBA555: descr = "16-bit RGBA 5-5-5-1"; break; 1241 case V4L2_PIX_FMT_RGBX555: descr = "16-bit RGBX 5-5-5-1"; break; 1242 case V4L2_PIX_FMT_BGRA555: descr = "16-bit BGRA 5-5-5-1"; break; 1243 case V4L2_PIX_FMT_BGRX555: descr = "16-bit BGRX 5-5-5-1"; break; 1244 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break; 1245 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break; 1246 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break; 1247 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break; 1248 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break; 1249 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break; 1250 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break; 1251 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break; 1252 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break; 1253 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break; 1254 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break; 1255 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break; 1256 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break; 1257 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break; 1258 case V4L2_PIX_FMT_BGRA32: descr = "32-bit ABGR 8-8-8-8"; break; 1259 case V4L2_PIX_FMT_BGRX32: descr = "32-bit XBGR 8-8-8-8"; break; 1260 case V4L2_PIX_FMT_RGBA32: descr = "32-bit RGBA 8-8-8-8"; break; 1261 case V4L2_PIX_FMT_RGBX32: descr = "32-bit RGBX 8-8-8-8"; break; 1262 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break; 1263 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break; 1264 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break; 1265 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break; 1266 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break; 1267 case V4L2_PIX_FMT_Y14: descr = "14-bit Greyscale"; break; 1268 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break; 1269 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break; 1270 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break; 1271 case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break; 1272 case V4L2_PIX_FMT_IPU3_Y10: descr = "10-bit greyscale (IPU3 Packed)"; break; 1273 case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break; 1274 case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break; 1275 case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break; 1276 case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break; 1277 case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break; 1278 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break; 1279 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break; 1280 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break; 1281 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break; 1282 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break; 1283 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break; 1284 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break; 1285 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break; 1286 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break; 1287 case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break; 1288 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break; 1289 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break; 1290 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break; 1291 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break; 1292 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break; 1293 case V4L2_PIX_FMT_YUV24: descr = "24-bit YUV 4:4:4 8-8-8"; break; 1294 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break; 1295 case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break; 1296 case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break; 1297 case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break; 1298 case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break; 1299 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break; 1300 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break; 1301 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break; 1302 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break; 1303 case V4L2_PIX_FMT_NV12: descr = "Y/CbCr 4:2:0"; break; 1304 case V4L2_PIX_FMT_NV21: descr = "Y/CrCb 4:2:0"; break; 1305 case V4L2_PIX_FMT_NV16: descr = "Y/CbCr 4:2:2"; break; 1306 case V4L2_PIX_FMT_NV61: descr = "Y/CrCb 4:2:2"; break; 1307 case V4L2_PIX_FMT_NV24: descr = "Y/CbCr 4:4:4"; break; 1308 case V4L2_PIX_FMT_NV42: descr = "Y/CrCb 4:4:4"; break; 1309 case V4L2_PIX_FMT_P010: descr = "10-bit Y/CrCb 4:2:0"; break; 1310 case V4L2_PIX_FMT_NV12_4L4: descr = "Y/CbCr 4:2:0 (4x4 Linear)"; break; 1311 case V4L2_PIX_FMT_NV12_16L16: descr = "Y/CbCr 4:2:0 (16x16 Linear)"; break; 1312 case V4L2_PIX_FMT_NV12_32L32: descr = "Y/CbCr 4:2:0 (32x32 Linear)"; break; 1313 case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break; 1314 case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break; 1315 case V4L2_PIX_FMT_NV16M: descr = "Y/CbCr 4:2:2 (N-C)"; break; 1316 case V4L2_PIX_FMT_NV61M: descr = "Y/CrCb 4:2:2 (N-C)"; break; 1317 case V4L2_PIX_FMT_NV12MT: descr = "Y/CbCr 4:2:0 (64x32 MB, N-C)"; break; 1318 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/CbCr 4:2:0 (16x16 MB, N-C)"; break; 1319 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break; 1320 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break; 1321 case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break; 1322 case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break; 1323 case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break; 1324 case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break; 1325 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break; 1326 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break; 1327 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break; 1328 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break; 1329 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break; 1330 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break; 1331 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break; 1332 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break; 1333 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break; 1334 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break; 1335 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break; 1336 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break; 1337 case V4L2_PIX_FMT_IPU3_SBGGR10: descr = "10-bit bayer BGGR IPU3 Packed"; break; 1338 case V4L2_PIX_FMT_IPU3_SGBRG10: descr = "10-bit bayer GBRG IPU3 Packed"; break; 1339 case V4L2_PIX_FMT_IPU3_SGRBG10: descr = "10-bit bayer GRBG IPU3 Packed"; break; 1340 case V4L2_PIX_FMT_IPU3_SRGGB10: descr = "10-bit bayer RGGB IPU3 Packed"; break; 1341 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break; 1342 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break; 1343 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break; 1344 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break; 1345 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break; 1346 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break; 1347 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break; 1348 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break; 1349 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break; 1350 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break; 1351 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break; 1352 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break; 1353 case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break; 1354 case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break; 1355 case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break; 1356 case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break; 1357 case V4L2_PIX_FMT_SBGGR14: descr = "14-bit Bayer BGBG/GRGR"; break; 1358 case V4L2_PIX_FMT_SGBRG14: descr = "14-bit Bayer GBGB/RGRG"; break; 1359 case V4L2_PIX_FMT_SGRBG14: descr = "14-bit Bayer GRGR/BGBG"; break; 1360 case V4L2_PIX_FMT_SRGGB14: descr = "14-bit Bayer RGRG/GBGB"; break; 1361 case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break; 1362 case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break; 1363 case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break; 1364 case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break; 1365 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break; 1366 case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break; 1367 case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break; 1368 case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break; 1369 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break; 1370 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break; 1371 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break; 1372 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break; 1373 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break; 1374 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break; 1375 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break; 1376 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break; 1377 case V4L2_PIX_FMT_MM21: descr = "Mediatek 8-bit Block Format"; break; 1378 case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break; 1379 case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break; 1380 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break; 1381 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break; 1382 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break; 1383 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break; 1384 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break; 1385 case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break; 1386 case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break; 1387 case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break; 1388 case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit Signed Deltas"; break; 1389 case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit Signed Deltas"; break; 1390 case V4L2_TCH_FMT_TU16: descr = "16-bit Unsigned Touch Data"; break; 1391 case V4L2_TCH_FMT_TU08: descr = "8-bit Unsigned Touch Data"; break; 1392 case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break; 1393 case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break; 1394 case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break; 1395 case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break; 1396 case V4L2_META_FMT_VIVID: descr = "Vivid Metadata"; break; 1397 case V4L2_META_FMT_RK_ISP1_PARAMS: descr = "Rockchip ISP1 3A Parameters"; break; 1398 case V4L2_META_FMT_RK_ISP1_STAT_3A: descr = "Rockchip ISP1 3A Statistics"; break; 1399 case V4L2_PIX_FMT_NV12M_8L128: descr = "NV12M (8x128 Linear)"; break; 1400 case V4L2_PIX_FMT_NV12M_10BE_8L128: descr = "10-bit NV12M (8x128 Linear, BE)"; break; 1401 1402 default: 1403 /* Compressed formats */ 1404 flags = V4L2_FMT_FLAG_COMPRESSED; 1405 switch (fmt->pixelformat) { 1406 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1407 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break; 1408 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break; 1409 case V4L2_PIX_FMT_DV: descr = "1394"; break; 1410 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break; 1411 case V4L2_PIX_FMT_H264: descr = "H.264"; break; 1412 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break; 1413 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break; 1414 case V4L2_PIX_FMT_H264_SLICE: descr = "H.264 Parsed Slice Data"; break; 1415 case V4L2_PIX_FMT_H263: descr = "H.263"; break; 1416 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break; 1417 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break; 1418 case V4L2_PIX_FMT_MPEG2_SLICE: descr = "MPEG-2 Parsed Slice Data"; break; 1419 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 Part 2 ES"; break; 1420 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break; 1421 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break; 1422 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break; 1423 case V4L2_PIX_FMT_VP8: descr = "VP8"; break; 1424 case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break; 1425 case V4L2_PIX_FMT_VP9: descr = "VP9"; break; 1426 case V4L2_PIX_FMT_VP9_FRAME: descr = "VP9 Frame"; break; 1427 case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */ 1428 case V4L2_PIX_FMT_HEVC_SLICE: descr = "HEVC Parsed Slice Data"; break; 1429 case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */ 1430 case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */ 1431 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break; 1432 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break; 1433 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break; 1434 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break; 1435 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break; 1436 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break; 1437 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break; 1438 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break; 1439 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break; 1440 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break; 1441 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break; 1442 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break; 1443 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break; 1444 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break; 1445 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break; 1446 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break; 1447 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break; 1448 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break; 1449 case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break; 1450 case V4L2_PIX_FMT_QC08C: descr = "QCOM Compressed 8-bit Format"; break; 1451 case V4L2_PIX_FMT_QC10C: descr = "QCOM Compressed 10-bit Format"; break; 1452 default: 1453 if (fmt->description[0]) 1454 return; 1455 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat); 1456 flags = 0; 1457 snprintf(fmt->description, sz, "%p4cc", 1458 &fmt->pixelformat); 1459 break; 1460 } 1461 } 1462 1463 if (descr) 1464 WARN_ON(strscpy(fmt->description, descr, sz) < 0); 1465 fmt->flags |= flags; 1466 } 1467 1468 static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops, 1469 struct file *file, void *fh, void *arg) 1470 { 1471 struct video_device *vdev = video_devdata(file); 1472 struct v4l2_fmtdesc *p = arg; 1473 int ret = check_fmt(file, p->type); 1474 u32 mbus_code; 1475 u32 cap_mask; 1476 1477 if (ret) 1478 return ret; 1479 ret = -EINVAL; 1480 1481 if (!(vdev->device_caps & V4L2_CAP_IO_MC)) 1482 p->mbus_code = 0; 1483 1484 mbus_code = p->mbus_code; 1485 CLEAR_AFTER_FIELD(p, type); 1486 p->mbus_code = mbus_code; 1487 1488 switch (p->type) { 1489 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1490 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1491 cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE | 1492 V4L2_CAP_VIDEO_M2M_MPLANE; 1493 if (!!(vdev->device_caps & cap_mask) != 1494 (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) 1495 break; 1496 1497 if (unlikely(!ops->vidioc_enum_fmt_vid_cap)) 1498 break; 1499 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg); 1500 break; 1501 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1502 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay)) 1503 break; 1504 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg); 1505 break; 1506 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1507 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1508 cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE | 1509 V4L2_CAP_VIDEO_M2M_MPLANE; 1510 if (!!(vdev->device_caps & cap_mask) != 1511 (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)) 1512 break; 1513 1514 if (unlikely(!ops->vidioc_enum_fmt_vid_out)) 1515 break; 1516 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg); 1517 break; 1518 case V4L2_BUF_TYPE_SDR_CAPTURE: 1519 if (unlikely(!ops->vidioc_enum_fmt_sdr_cap)) 1520 break; 1521 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg); 1522 break; 1523 case V4L2_BUF_TYPE_SDR_OUTPUT: 1524 if (unlikely(!ops->vidioc_enum_fmt_sdr_out)) 1525 break; 1526 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg); 1527 break; 1528 case V4L2_BUF_TYPE_META_CAPTURE: 1529 if (unlikely(!ops->vidioc_enum_fmt_meta_cap)) 1530 break; 1531 ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg); 1532 break; 1533 case V4L2_BUF_TYPE_META_OUTPUT: 1534 if (unlikely(!ops->vidioc_enum_fmt_meta_out)) 1535 break; 1536 ret = ops->vidioc_enum_fmt_meta_out(file, fh, arg); 1537 break; 1538 } 1539 if (ret == 0) 1540 v4l_fill_fmtdesc(p); 1541 return ret; 1542 } 1543 1544 static void v4l_pix_format_touch(struct v4l2_pix_format *p) 1545 { 1546 /* 1547 * The v4l2_pix_format structure contains fields that make no sense for 1548 * touch. Set them to default values in this case. 1549 */ 1550 1551 p->field = V4L2_FIELD_NONE; 1552 p->colorspace = V4L2_COLORSPACE_RAW; 1553 p->flags = 0; 1554 p->ycbcr_enc = 0; 1555 p->quantization = 0; 1556 p->xfer_func = 0; 1557 } 1558 1559 static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, 1560 struct file *file, void *fh, void *arg) 1561 { 1562 struct v4l2_format *p = arg; 1563 struct video_device *vfd = video_devdata(file); 1564 int ret = check_fmt(file, p->type); 1565 1566 if (ret) 1567 return ret; 1568 1569 /* 1570 * fmt can't be cleared for these overlay types due to the 'clips' 1571 * 'clipcount' and 'bitmap' pointers in struct v4l2_window. 1572 * Those are provided by the user. So handle these two overlay types 1573 * first, and then just do a simple memset for the other types. 1574 */ 1575 switch (p->type) { 1576 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1577 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: { 1578 struct v4l2_clip *clips = p->fmt.win.clips; 1579 u32 clipcount = p->fmt.win.clipcount; 1580 void __user *bitmap = p->fmt.win.bitmap; 1581 1582 memset(&p->fmt, 0, sizeof(p->fmt)); 1583 p->fmt.win.clips = clips; 1584 p->fmt.win.clipcount = clipcount; 1585 p->fmt.win.bitmap = bitmap; 1586 break; 1587 } 1588 default: 1589 memset(&p->fmt, 0, sizeof(p->fmt)); 1590 break; 1591 } 1592 1593 switch (p->type) { 1594 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1595 if (unlikely(!ops->vidioc_g_fmt_vid_cap)) 1596 break; 1597 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1598 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg); 1599 /* just in case the driver zeroed it again */ 1600 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1601 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1602 v4l_pix_format_touch(&p->fmt.pix); 1603 return ret; 1604 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1605 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg); 1606 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1607 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg); 1608 case V4L2_BUF_TYPE_VBI_CAPTURE: 1609 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg); 1610 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1611 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg); 1612 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1613 if (unlikely(!ops->vidioc_g_fmt_vid_out)) 1614 break; 1615 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1616 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg); 1617 /* just in case the driver zeroed it again */ 1618 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1619 return ret; 1620 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1621 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg); 1622 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1623 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg); 1624 case V4L2_BUF_TYPE_VBI_OUTPUT: 1625 return ops->vidioc_g_fmt_vbi_out(file, fh, arg); 1626 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1627 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg); 1628 case V4L2_BUF_TYPE_SDR_CAPTURE: 1629 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg); 1630 case V4L2_BUF_TYPE_SDR_OUTPUT: 1631 return ops->vidioc_g_fmt_sdr_out(file, fh, arg); 1632 case V4L2_BUF_TYPE_META_CAPTURE: 1633 return ops->vidioc_g_fmt_meta_cap(file, fh, arg); 1634 case V4L2_BUF_TYPE_META_OUTPUT: 1635 return ops->vidioc_g_fmt_meta_out(file, fh, arg); 1636 } 1637 return -EINVAL; 1638 } 1639 1640 static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, 1641 struct file *file, void *fh, void *arg) 1642 { 1643 struct v4l2_format *p = arg; 1644 struct video_device *vfd = video_devdata(file); 1645 int ret = check_fmt(file, p->type); 1646 unsigned int i; 1647 1648 if (ret) 1649 return ret; 1650 1651 ret = v4l_enable_media_source(vfd); 1652 if (ret) 1653 return ret; 1654 v4l_sanitize_format(p); 1655 1656 switch (p->type) { 1657 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1658 if (unlikely(!ops->vidioc_s_fmt_vid_cap)) 1659 break; 1660 CLEAR_AFTER_FIELD(p, fmt.pix); 1661 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg); 1662 /* just in case the driver zeroed it again */ 1663 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1664 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1665 v4l_pix_format_touch(&p->fmt.pix); 1666 return ret; 1667 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1668 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane)) 1669 break; 1670 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1671 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1672 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1673 bytesperline); 1674 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg); 1675 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1676 if (unlikely(!ops->vidioc_s_fmt_vid_overlay)) 1677 break; 1678 CLEAR_AFTER_FIELD(p, fmt.win); 1679 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg); 1680 case V4L2_BUF_TYPE_VBI_CAPTURE: 1681 if (unlikely(!ops->vidioc_s_fmt_vbi_cap)) 1682 break; 1683 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1684 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg); 1685 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1686 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap)) 1687 break; 1688 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1689 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg); 1690 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1691 if (unlikely(!ops->vidioc_s_fmt_vid_out)) 1692 break; 1693 CLEAR_AFTER_FIELD(p, fmt.pix); 1694 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg); 1695 /* just in case the driver zeroed it again */ 1696 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1697 return ret; 1698 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1699 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane)) 1700 break; 1701 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1702 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1703 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1704 bytesperline); 1705 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg); 1706 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1707 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay)) 1708 break; 1709 CLEAR_AFTER_FIELD(p, fmt.win); 1710 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg); 1711 case V4L2_BUF_TYPE_VBI_OUTPUT: 1712 if (unlikely(!ops->vidioc_s_fmt_vbi_out)) 1713 break; 1714 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1715 return ops->vidioc_s_fmt_vbi_out(file, fh, arg); 1716 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1717 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out)) 1718 break; 1719 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1720 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg); 1721 case V4L2_BUF_TYPE_SDR_CAPTURE: 1722 if (unlikely(!ops->vidioc_s_fmt_sdr_cap)) 1723 break; 1724 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1725 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg); 1726 case V4L2_BUF_TYPE_SDR_OUTPUT: 1727 if (unlikely(!ops->vidioc_s_fmt_sdr_out)) 1728 break; 1729 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1730 return ops->vidioc_s_fmt_sdr_out(file, fh, arg); 1731 case V4L2_BUF_TYPE_META_CAPTURE: 1732 if (unlikely(!ops->vidioc_s_fmt_meta_cap)) 1733 break; 1734 CLEAR_AFTER_FIELD(p, fmt.meta); 1735 return ops->vidioc_s_fmt_meta_cap(file, fh, arg); 1736 case V4L2_BUF_TYPE_META_OUTPUT: 1737 if (unlikely(!ops->vidioc_s_fmt_meta_out)) 1738 break; 1739 CLEAR_AFTER_FIELD(p, fmt.meta); 1740 return ops->vidioc_s_fmt_meta_out(file, fh, arg); 1741 } 1742 return -EINVAL; 1743 } 1744 1745 static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, 1746 struct file *file, void *fh, void *arg) 1747 { 1748 struct v4l2_format *p = arg; 1749 struct video_device *vfd = video_devdata(file); 1750 int ret = check_fmt(file, p->type); 1751 unsigned int i; 1752 1753 if (ret) 1754 return ret; 1755 1756 v4l_sanitize_format(p); 1757 1758 switch (p->type) { 1759 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1760 if (unlikely(!ops->vidioc_try_fmt_vid_cap)) 1761 break; 1762 CLEAR_AFTER_FIELD(p, fmt.pix); 1763 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg); 1764 /* just in case the driver zeroed it again */ 1765 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1766 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1767 v4l_pix_format_touch(&p->fmt.pix); 1768 return ret; 1769 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1770 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane)) 1771 break; 1772 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1773 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1774 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1775 bytesperline); 1776 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg); 1777 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1778 if (unlikely(!ops->vidioc_try_fmt_vid_overlay)) 1779 break; 1780 CLEAR_AFTER_FIELD(p, fmt.win); 1781 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg); 1782 case V4L2_BUF_TYPE_VBI_CAPTURE: 1783 if (unlikely(!ops->vidioc_try_fmt_vbi_cap)) 1784 break; 1785 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1786 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg); 1787 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1788 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap)) 1789 break; 1790 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1791 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg); 1792 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1793 if (unlikely(!ops->vidioc_try_fmt_vid_out)) 1794 break; 1795 CLEAR_AFTER_FIELD(p, fmt.pix); 1796 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg); 1797 /* just in case the driver zeroed it again */ 1798 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1799 return ret; 1800 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1801 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane)) 1802 break; 1803 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1804 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1805 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1806 bytesperline); 1807 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg); 1808 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1809 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay)) 1810 break; 1811 CLEAR_AFTER_FIELD(p, fmt.win); 1812 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg); 1813 case V4L2_BUF_TYPE_VBI_OUTPUT: 1814 if (unlikely(!ops->vidioc_try_fmt_vbi_out)) 1815 break; 1816 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1817 return ops->vidioc_try_fmt_vbi_out(file, fh, arg); 1818 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1819 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out)) 1820 break; 1821 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1822 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg); 1823 case V4L2_BUF_TYPE_SDR_CAPTURE: 1824 if (unlikely(!ops->vidioc_try_fmt_sdr_cap)) 1825 break; 1826 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1827 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg); 1828 case V4L2_BUF_TYPE_SDR_OUTPUT: 1829 if (unlikely(!ops->vidioc_try_fmt_sdr_out)) 1830 break; 1831 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1832 return ops->vidioc_try_fmt_sdr_out(file, fh, arg); 1833 case V4L2_BUF_TYPE_META_CAPTURE: 1834 if (unlikely(!ops->vidioc_try_fmt_meta_cap)) 1835 break; 1836 CLEAR_AFTER_FIELD(p, fmt.meta); 1837 return ops->vidioc_try_fmt_meta_cap(file, fh, arg); 1838 case V4L2_BUF_TYPE_META_OUTPUT: 1839 if (unlikely(!ops->vidioc_try_fmt_meta_out)) 1840 break; 1841 CLEAR_AFTER_FIELD(p, fmt.meta); 1842 return ops->vidioc_try_fmt_meta_out(file, fh, arg); 1843 } 1844 return -EINVAL; 1845 } 1846 1847 static int v4l_streamon(const struct v4l2_ioctl_ops *ops, 1848 struct file *file, void *fh, void *arg) 1849 { 1850 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg); 1851 } 1852 1853 static int v4l_streamoff(const struct v4l2_ioctl_ops *ops, 1854 struct file *file, void *fh, void *arg) 1855 { 1856 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg); 1857 } 1858 1859 static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops, 1860 struct file *file, void *fh, void *arg) 1861 { 1862 struct video_device *vfd = video_devdata(file); 1863 struct v4l2_tuner *p = arg; 1864 int err; 1865 1866 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1867 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1868 err = ops->vidioc_g_tuner(file, fh, p); 1869 if (!err) 1870 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1871 return err; 1872 } 1873 1874 static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops, 1875 struct file *file, void *fh, void *arg) 1876 { 1877 struct video_device *vfd = video_devdata(file); 1878 struct v4l2_tuner *p = arg; 1879 int ret; 1880 1881 ret = v4l_enable_media_source(vfd); 1882 if (ret) 1883 return ret; 1884 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1885 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1886 return ops->vidioc_s_tuner(file, fh, p); 1887 } 1888 1889 static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops, 1890 struct file *file, void *fh, void *arg) 1891 { 1892 struct video_device *vfd = video_devdata(file); 1893 struct v4l2_modulator *p = arg; 1894 int err; 1895 1896 if (vfd->vfl_type == VFL_TYPE_RADIO) 1897 p->type = V4L2_TUNER_RADIO; 1898 1899 err = ops->vidioc_g_modulator(file, fh, p); 1900 if (!err) 1901 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1902 return err; 1903 } 1904 1905 static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops, 1906 struct file *file, void *fh, void *arg) 1907 { 1908 struct video_device *vfd = video_devdata(file); 1909 struct v4l2_modulator *p = arg; 1910 1911 if (vfd->vfl_type == VFL_TYPE_RADIO) 1912 p->type = V4L2_TUNER_RADIO; 1913 1914 return ops->vidioc_s_modulator(file, fh, p); 1915 } 1916 1917 static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops, 1918 struct file *file, void *fh, void *arg) 1919 { 1920 struct video_device *vfd = video_devdata(file); 1921 struct v4l2_frequency *p = arg; 1922 1923 if (vfd->vfl_type == VFL_TYPE_SDR) 1924 p->type = V4L2_TUNER_SDR; 1925 else 1926 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1927 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1928 return ops->vidioc_g_frequency(file, fh, p); 1929 } 1930 1931 static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops, 1932 struct file *file, void *fh, void *arg) 1933 { 1934 struct video_device *vfd = video_devdata(file); 1935 const struct v4l2_frequency *p = arg; 1936 enum v4l2_tuner_type type; 1937 int ret; 1938 1939 ret = v4l_enable_media_source(vfd); 1940 if (ret) 1941 return ret; 1942 if (vfd->vfl_type == VFL_TYPE_SDR) { 1943 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 1944 return -EINVAL; 1945 } else { 1946 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1947 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1948 if (type != p->type) 1949 return -EINVAL; 1950 } 1951 return ops->vidioc_s_frequency(file, fh, p); 1952 } 1953 1954 static int v4l_enumstd(const struct v4l2_ioctl_ops *ops, 1955 struct file *file, void *fh, void *arg) 1956 { 1957 struct video_device *vfd = video_devdata(file); 1958 struct v4l2_standard *p = arg; 1959 1960 return v4l_video_std_enumstd(p, vfd->tvnorms); 1961 } 1962 1963 static int v4l_s_std(const struct v4l2_ioctl_ops *ops, 1964 struct file *file, void *fh, void *arg) 1965 { 1966 struct video_device *vfd = video_devdata(file); 1967 v4l2_std_id id = *(v4l2_std_id *)arg, norm; 1968 int ret; 1969 1970 ret = v4l_enable_media_source(vfd); 1971 if (ret) 1972 return ret; 1973 norm = id & vfd->tvnorms; 1974 if (vfd->tvnorms && !norm) /* Check if std is supported */ 1975 return -EINVAL; 1976 1977 /* Calls the specific handler */ 1978 return ops->vidioc_s_std(file, fh, norm); 1979 } 1980 1981 static int v4l_querystd(const struct v4l2_ioctl_ops *ops, 1982 struct file *file, void *fh, void *arg) 1983 { 1984 struct video_device *vfd = video_devdata(file); 1985 v4l2_std_id *p = arg; 1986 int ret; 1987 1988 ret = v4l_enable_media_source(vfd); 1989 if (ret) 1990 return ret; 1991 /* 1992 * If no signal is detected, then the driver should return 1993 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with 1994 * any standards that do not apply removed. 1995 * 1996 * This means that tuners, audio and video decoders can join 1997 * their efforts to improve the standards detection. 1998 */ 1999 *p = vfd->tvnorms; 2000 return ops->vidioc_querystd(file, fh, arg); 2001 } 2002 2003 static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops, 2004 struct file *file, void *fh, void *arg) 2005 { 2006 struct video_device *vfd = video_devdata(file); 2007 struct v4l2_hw_freq_seek *p = arg; 2008 enum v4l2_tuner_type type; 2009 int ret; 2010 2011 ret = v4l_enable_media_source(vfd); 2012 if (ret) 2013 return ret; 2014 /* s_hw_freq_seek is not supported for SDR for now */ 2015 if (vfd->vfl_type == VFL_TYPE_SDR) 2016 return -EINVAL; 2017 2018 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2019 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2020 if (p->type != type) 2021 return -EINVAL; 2022 return ops->vidioc_s_hw_freq_seek(file, fh, p); 2023 } 2024 2025 static int v4l_overlay(const struct v4l2_ioctl_ops *ops, 2026 struct file *file, void *fh, void *arg) 2027 { 2028 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg); 2029 } 2030 2031 static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops, 2032 struct file *file, void *fh, void *arg) 2033 { 2034 struct v4l2_requestbuffers *p = arg; 2035 int ret = check_fmt(file, p->type); 2036 2037 if (ret) 2038 return ret; 2039 2040 CLEAR_AFTER_FIELD(p, flags); 2041 2042 return ops->vidioc_reqbufs(file, fh, p); 2043 } 2044 2045 static int v4l_querybuf(const struct v4l2_ioctl_ops *ops, 2046 struct file *file, void *fh, void *arg) 2047 { 2048 struct v4l2_buffer *p = arg; 2049 int ret = check_fmt(file, p->type); 2050 2051 return ret ? ret : ops->vidioc_querybuf(file, fh, p); 2052 } 2053 2054 static int v4l_qbuf(const struct v4l2_ioctl_ops *ops, 2055 struct file *file, void *fh, void *arg) 2056 { 2057 struct v4l2_buffer *p = arg; 2058 int ret = check_fmt(file, p->type); 2059 2060 return ret ? ret : ops->vidioc_qbuf(file, fh, p); 2061 } 2062 2063 static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops, 2064 struct file *file, void *fh, void *arg) 2065 { 2066 struct v4l2_buffer *p = arg; 2067 int ret = check_fmt(file, p->type); 2068 2069 return ret ? ret : ops->vidioc_dqbuf(file, fh, p); 2070 } 2071 2072 static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops, 2073 struct file *file, void *fh, void *arg) 2074 { 2075 struct v4l2_create_buffers *create = arg; 2076 int ret = check_fmt(file, create->format.type); 2077 2078 if (ret) 2079 return ret; 2080 2081 CLEAR_AFTER_FIELD(create, flags); 2082 2083 v4l_sanitize_format(&create->format); 2084 2085 ret = ops->vidioc_create_bufs(file, fh, create); 2086 2087 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 2088 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT) 2089 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 2090 2091 return ret; 2092 } 2093 2094 static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops, 2095 struct file *file, void *fh, void *arg) 2096 { 2097 struct v4l2_buffer *b = arg; 2098 int ret = check_fmt(file, b->type); 2099 2100 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b); 2101 } 2102 2103 static int v4l_g_parm(const struct v4l2_ioctl_ops *ops, 2104 struct file *file, void *fh, void *arg) 2105 { 2106 struct video_device *vfd = video_devdata(file); 2107 struct v4l2_streamparm *p = arg; 2108 v4l2_std_id std; 2109 int ret = check_fmt(file, p->type); 2110 2111 if (ret) 2112 return ret; 2113 if (ops->vidioc_g_parm) 2114 return ops->vidioc_g_parm(file, fh, p); 2115 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && 2116 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2117 return -EINVAL; 2118 if (vfd->device_caps & V4L2_CAP_READWRITE) 2119 p->parm.capture.readbuffers = 2; 2120 ret = ops->vidioc_g_std(file, fh, &std); 2121 if (ret == 0) 2122 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe); 2123 return ret; 2124 } 2125 2126 static int v4l_s_parm(const struct v4l2_ioctl_ops *ops, 2127 struct file *file, void *fh, void *arg) 2128 { 2129 struct v4l2_streamparm *p = arg; 2130 int ret = check_fmt(file, p->type); 2131 2132 if (ret) 2133 return ret; 2134 2135 /* Note: extendedmode is never used in drivers */ 2136 if (V4L2_TYPE_IS_OUTPUT(p->type)) { 2137 memset(p->parm.output.reserved, 0, 2138 sizeof(p->parm.output.reserved)); 2139 p->parm.output.extendedmode = 0; 2140 p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY; 2141 } else { 2142 memset(p->parm.capture.reserved, 0, 2143 sizeof(p->parm.capture.reserved)); 2144 p->parm.capture.extendedmode = 0; 2145 p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY; 2146 } 2147 return ops->vidioc_s_parm(file, fh, p); 2148 } 2149 2150 static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops, 2151 struct file *file, void *fh, void *arg) 2152 { 2153 struct video_device *vfd = video_devdata(file); 2154 struct v4l2_queryctrl *p = arg; 2155 struct v4l2_fh *vfh = 2156 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2157 2158 if (vfh && vfh->ctrl_handler) 2159 return v4l2_queryctrl(vfh->ctrl_handler, p); 2160 if (vfd->ctrl_handler) 2161 return v4l2_queryctrl(vfd->ctrl_handler, p); 2162 if (ops->vidioc_queryctrl) 2163 return ops->vidioc_queryctrl(file, fh, p); 2164 return -ENOTTY; 2165 } 2166 2167 static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops, 2168 struct file *file, void *fh, void *arg) 2169 { 2170 struct video_device *vfd = video_devdata(file); 2171 struct v4l2_query_ext_ctrl *p = arg; 2172 struct v4l2_fh *vfh = 2173 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2174 2175 if (vfh && vfh->ctrl_handler) 2176 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p); 2177 if (vfd->ctrl_handler) 2178 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p); 2179 if (ops->vidioc_query_ext_ctrl) 2180 return ops->vidioc_query_ext_ctrl(file, fh, p); 2181 return -ENOTTY; 2182 } 2183 2184 static int v4l_querymenu(const struct v4l2_ioctl_ops *ops, 2185 struct file *file, void *fh, void *arg) 2186 { 2187 struct video_device *vfd = video_devdata(file); 2188 struct v4l2_querymenu *p = arg; 2189 struct v4l2_fh *vfh = 2190 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2191 2192 if (vfh && vfh->ctrl_handler) 2193 return v4l2_querymenu(vfh->ctrl_handler, p); 2194 if (vfd->ctrl_handler) 2195 return v4l2_querymenu(vfd->ctrl_handler, p); 2196 if (ops->vidioc_querymenu) 2197 return ops->vidioc_querymenu(file, fh, p); 2198 return -ENOTTY; 2199 } 2200 2201 static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops, 2202 struct file *file, void *fh, void *arg) 2203 { 2204 struct video_device *vfd = video_devdata(file); 2205 struct v4l2_control *p = arg; 2206 struct v4l2_fh *vfh = 2207 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2208 struct v4l2_ext_controls ctrls; 2209 struct v4l2_ext_control ctrl; 2210 2211 if (vfh && vfh->ctrl_handler) 2212 return v4l2_g_ctrl(vfh->ctrl_handler, p); 2213 if (vfd->ctrl_handler) 2214 return v4l2_g_ctrl(vfd->ctrl_handler, p); 2215 if (ops->vidioc_g_ctrl) 2216 return ops->vidioc_g_ctrl(file, fh, p); 2217 if (ops->vidioc_g_ext_ctrls == NULL) 2218 return -ENOTTY; 2219 2220 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2221 ctrls.count = 1; 2222 ctrls.controls = &ctrl; 2223 ctrl.id = p->id; 2224 ctrl.value = p->value; 2225 if (check_ext_ctrls(&ctrls, VIDIOC_G_CTRL)) { 2226 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls); 2227 2228 if (ret == 0) 2229 p->value = ctrl.value; 2230 return ret; 2231 } 2232 return -EINVAL; 2233 } 2234 2235 static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, 2236 struct file *file, void *fh, void *arg) 2237 { 2238 struct video_device *vfd = video_devdata(file); 2239 struct v4l2_control *p = arg; 2240 struct v4l2_fh *vfh = 2241 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2242 struct v4l2_ext_controls ctrls; 2243 struct v4l2_ext_control ctrl; 2244 int ret; 2245 2246 if (vfh && vfh->ctrl_handler) 2247 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p); 2248 if (vfd->ctrl_handler) 2249 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p); 2250 if (ops->vidioc_s_ctrl) 2251 return ops->vidioc_s_ctrl(file, fh, p); 2252 if (ops->vidioc_s_ext_ctrls == NULL) 2253 return -ENOTTY; 2254 2255 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2256 ctrls.count = 1; 2257 ctrls.controls = &ctrl; 2258 ctrl.id = p->id; 2259 ctrl.value = p->value; 2260 if (!check_ext_ctrls(&ctrls, VIDIOC_S_CTRL)) 2261 return -EINVAL; 2262 ret = ops->vidioc_s_ext_ctrls(file, fh, &ctrls); 2263 p->value = ctrl.value; 2264 return ret; 2265 } 2266 2267 static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2268 struct file *file, void *fh, void *arg) 2269 { 2270 struct video_device *vfd = video_devdata(file); 2271 struct v4l2_ext_controls *p = arg; 2272 struct v4l2_fh *vfh = 2273 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2274 2275 p->error_idx = p->count; 2276 if (vfh && vfh->ctrl_handler) 2277 return v4l2_g_ext_ctrls(vfh->ctrl_handler, 2278 vfd, vfd->v4l2_dev->mdev, p); 2279 if (vfd->ctrl_handler) 2280 return v4l2_g_ext_ctrls(vfd->ctrl_handler, 2281 vfd, vfd->v4l2_dev->mdev, p); 2282 if (ops->vidioc_g_ext_ctrls == NULL) 2283 return -ENOTTY; 2284 return check_ext_ctrls(p, VIDIOC_G_EXT_CTRLS) ? 2285 ops->vidioc_g_ext_ctrls(file, fh, p) : -EINVAL; 2286 } 2287 2288 static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2289 struct file *file, void *fh, void *arg) 2290 { 2291 struct video_device *vfd = video_devdata(file); 2292 struct v4l2_ext_controls *p = arg; 2293 struct v4l2_fh *vfh = 2294 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2295 2296 p->error_idx = p->count; 2297 if (vfh && vfh->ctrl_handler) 2298 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, 2299 vfd, vfd->v4l2_dev->mdev, p); 2300 if (vfd->ctrl_handler) 2301 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, 2302 vfd, vfd->v4l2_dev->mdev, p); 2303 if (ops->vidioc_s_ext_ctrls == NULL) 2304 return -ENOTTY; 2305 return check_ext_ctrls(p, VIDIOC_S_EXT_CTRLS) ? 2306 ops->vidioc_s_ext_ctrls(file, fh, p) : -EINVAL; 2307 } 2308 2309 static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2310 struct file *file, void *fh, void *arg) 2311 { 2312 struct video_device *vfd = video_devdata(file); 2313 struct v4l2_ext_controls *p = arg; 2314 struct v4l2_fh *vfh = 2315 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2316 2317 p->error_idx = p->count; 2318 if (vfh && vfh->ctrl_handler) 2319 return v4l2_try_ext_ctrls(vfh->ctrl_handler, 2320 vfd, vfd->v4l2_dev->mdev, p); 2321 if (vfd->ctrl_handler) 2322 return v4l2_try_ext_ctrls(vfd->ctrl_handler, 2323 vfd, vfd->v4l2_dev->mdev, p); 2324 if (ops->vidioc_try_ext_ctrls == NULL) 2325 return -ENOTTY; 2326 return check_ext_ctrls(p, VIDIOC_TRY_EXT_CTRLS) ? 2327 ops->vidioc_try_ext_ctrls(file, fh, p) : -EINVAL; 2328 } 2329 2330 /* 2331 * The selection API specified originally that the _MPLANE buffer types 2332 * shouldn't be used. The reasons for this are lost in the mists of time 2333 * (or just really crappy memories). Regardless, this is really annoying 2334 * for userspace. So to keep things simple we map _MPLANE buffer types 2335 * to their 'regular' counterparts before calling the driver. And we 2336 * restore it afterwards. This way applications can use either buffer 2337 * type and drivers don't need to check for both. 2338 */ 2339 static int v4l_g_selection(const struct v4l2_ioctl_ops *ops, 2340 struct file *file, void *fh, void *arg) 2341 { 2342 struct v4l2_selection *p = arg; 2343 u32 old_type = p->type; 2344 int ret; 2345 2346 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2347 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2348 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2349 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2350 ret = ops->vidioc_g_selection(file, fh, p); 2351 p->type = old_type; 2352 return ret; 2353 } 2354 2355 static int v4l_s_selection(const struct v4l2_ioctl_ops *ops, 2356 struct file *file, void *fh, void *arg) 2357 { 2358 struct v4l2_selection *p = arg; 2359 u32 old_type = p->type; 2360 int ret; 2361 2362 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2363 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2364 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2365 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2366 ret = ops->vidioc_s_selection(file, fh, p); 2367 p->type = old_type; 2368 return ret; 2369 } 2370 2371 static int v4l_g_crop(const struct v4l2_ioctl_ops *ops, 2372 struct file *file, void *fh, void *arg) 2373 { 2374 struct video_device *vfd = video_devdata(file); 2375 struct v4l2_crop *p = arg; 2376 struct v4l2_selection s = { 2377 .type = p->type, 2378 }; 2379 int ret; 2380 2381 /* simulate capture crop using selection api */ 2382 2383 /* crop means compose for output devices */ 2384 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2385 s.target = V4L2_SEL_TGT_COMPOSE; 2386 else 2387 s.target = V4L2_SEL_TGT_CROP; 2388 2389 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2390 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2391 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2392 2393 ret = v4l_g_selection(ops, file, fh, &s); 2394 2395 /* copying results to old structure on success */ 2396 if (!ret) 2397 p->c = s.r; 2398 return ret; 2399 } 2400 2401 static int v4l_s_crop(const struct v4l2_ioctl_ops *ops, 2402 struct file *file, void *fh, void *arg) 2403 { 2404 struct video_device *vfd = video_devdata(file); 2405 struct v4l2_crop *p = arg; 2406 struct v4l2_selection s = { 2407 .type = p->type, 2408 .r = p->c, 2409 }; 2410 2411 /* simulate capture crop using selection api */ 2412 2413 /* crop means compose for output devices */ 2414 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2415 s.target = V4L2_SEL_TGT_COMPOSE; 2416 else 2417 s.target = V4L2_SEL_TGT_CROP; 2418 2419 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2420 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2421 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2422 2423 return v4l_s_selection(ops, file, fh, &s); 2424 } 2425 2426 static int v4l_cropcap(const struct v4l2_ioctl_ops *ops, 2427 struct file *file, void *fh, void *arg) 2428 { 2429 struct video_device *vfd = video_devdata(file); 2430 struct v4l2_cropcap *p = arg; 2431 struct v4l2_selection s = { .type = p->type }; 2432 int ret = 0; 2433 2434 /* setting trivial pixelaspect */ 2435 p->pixelaspect.numerator = 1; 2436 p->pixelaspect.denominator = 1; 2437 2438 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2439 s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2440 else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2441 s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2442 2443 /* 2444 * The determine_valid_ioctls() call already should ensure 2445 * that this can never happen, but just in case... 2446 */ 2447 if (WARN_ON(!ops->vidioc_g_selection)) 2448 return -ENOTTY; 2449 2450 if (ops->vidioc_g_pixelaspect) 2451 ret = ops->vidioc_g_pixelaspect(file, fh, s.type, 2452 &p->pixelaspect); 2453 2454 /* 2455 * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the 2456 * square pixel aspect ratio in that case. 2457 */ 2458 if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD) 2459 return ret; 2460 2461 /* Use g_selection() to fill in the bounds and defrect rectangles */ 2462 2463 /* obtaining bounds */ 2464 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2465 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS; 2466 else 2467 s.target = V4L2_SEL_TGT_CROP_BOUNDS; 2468 2469 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2470 s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ? 2471 V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS; 2472 2473 ret = v4l_g_selection(ops, file, fh, &s); 2474 if (ret) 2475 return ret; 2476 p->bounds = s.r; 2477 2478 /* obtaining defrect */ 2479 if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS) 2480 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT; 2481 else 2482 s.target = V4L2_SEL_TGT_CROP_DEFAULT; 2483 2484 ret = v4l_g_selection(ops, file, fh, &s); 2485 if (ret) 2486 return ret; 2487 p->defrect = s.r; 2488 2489 return 0; 2490 } 2491 2492 static int v4l_log_status(const struct v4l2_ioctl_ops *ops, 2493 struct file *file, void *fh, void *arg) 2494 { 2495 struct video_device *vfd = video_devdata(file); 2496 int ret; 2497 2498 if (vfd->v4l2_dev) 2499 pr_info("%s: ================= START STATUS =================\n", 2500 vfd->v4l2_dev->name); 2501 ret = ops->vidioc_log_status(file, fh); 2502 if (vfd->v4l2_dev) 2503 pr_info("%s: ================== END STATUS ==================\n", 2504 vfd->v4l2_dev->name); 2505 return ret; 2506 } 2507 2508 static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops, 2509 struct file *file, void *fh, void *arg) 2510 { 2511 #ifdef CONFIG_VIDEO_ADV_DEBUG 2512 struct v4l2_dbg_register *p = arg; 2513 struct video_device *vfd = video_devdata(file); 2514 struct v4l2_subdev *sd; 2515 int idx = 0; 2516 2517 if (!capable(CAP_SYS_ADMIN)) 2518 return -EPERM; 2519 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2520 if (vfd->v4l2_dev == NULL) 2521 return -EINVAL; 2522 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2523 if (p->match.addr == idx++) 2524 return v4l2_subdev_call(sd, core, g_register, p); 2525 return -EINVAL; 2526 } 2527 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2528 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2529 return ops->vidioc_g_register(file, fh, p); 2530 return -EINVAL; 2531 #else 2532 return -ENOTTY; 2533 #endif 2534 } 2535 2536 static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops, 2537 struct file *file, void *fh, void *arg) 2538 { 2539 #ifdef CONFIG_VIDEO_ADV_DEBUG 2540 const struct v4l2_dbg_register *p = arg; 2541 struct video_device *vfd = video_devdata(file); 2542 struct v4l2_subdev *sd; 2543 int idx = 0; 2544 2545 if (!capable(CAP_SYS_ADMIN)) 2546 return -EPERM; 2547 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2548 if (vfd->v4l2_dev == NULL) 2549 return -EINVAL; 2550 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2551 if (p->match.addr == idx++) 2552 return v4l2_subdev_call(sd, core, s_register, p); 2553 return -EINVAL; 2554 } 2555 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2556 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2557 return ops->vidioc_s_register(file, fh, p); 2558 return -EINVAL; 2559 #else 2560 return -ENOTTY; 2561 #endif 2562 } 2563 2564 static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops, 2565 struct file *file, void *fh, void *arg) 2566 { 2567 #ifdef CONFIG_VIDEO_ADV_DEBUG 2568 struct video_device *vfd = video_devdata(file); 2569 struct v4l2_dbg_chip_info *p = arg; 2570 struct v4l2_subdev *sd; 2571 int idx = 0; 2572 2573 switch (p->match.type) { 2574 case V4L2_CHIP_MATCH_BRIDGE: 2575 if (ops->vidioc_s_register) 2576 p->flags |= V4L2_CHIP_FL_WRITABLE; 2577 if (ops->vidioc_g_register) 2578 p->flags |= V4L2_CHIP_FL_READABLE; 2579 strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name)); 2580 if (ops->vidioc_g_chip_info) 2581 return ops->vidioc_g_chip_info(file, fh, arg); 2582 if (p->match.addr) 2583 return -EINVAL; 2584 return 0; 2585 2586 case V4L2_CHIP_MATCH_SUBDEV: 2587 if (vfd->v4l2_dev == NULL) 2588 break; 2589 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) { 2590 if (p->match.addr != idx++) 2591 continue; 2592 if (sd->ops->core && sd->ops->core->s_register) 2593 p->flags |= V4L2_CHIP_FL_WRITABLE; 2594 if (sd->ops->core && sd->ops->core->g_register) 2595 p->flags |= V4L2_CHIP_FL_READABLE; 2596 strscpy(p->name, sd->name, sizeof(p->name)); 2597 return 0; 2598 } 2599 break; 2600 } 2601 return -EINVAL; 2602 #else 2603 return -ENOTTY; 2604 #endif 2605 } 2606 2607 static int v4l_dqevent(const struct v4l2_ioctl_ops *ops, 2608 struct file *file, void *fh, void *arg) 2609 { 2610 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK); 2611 } 2612 2613 static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops, 2614 struct file *file, void *fh, void *arg) 2615 { 2616 return ops->vidioc_subscribe_event(fh, arg); 2617 } 2618 2619 static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops, 2620 struct file *file, void *fh, void *arg) 2621 { 2622 return ops->vidioc_unsubscribe_event(fh, arg); 2623 } 2624 2625 static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops, 2626 struct file *file, void *fh, void *arg) 2627 { 2628 struct v4l2_sliced_vbi_cap *p = arg; 2629 int ret = check_fmt(file, p->type); 2630 2631 if (ret) 2632 return ret; 2633 2634 /* Clear up to type, everything after type is zeroed already */ 2635 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type)); 2636 2637 return ops->vidioc_g_sliced_vbi_cap(file, fh, p); 2638 } 2639 2640 static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops, 2641 struct file *file, void *fh, void *arg) 2642 { 2643 struct video_device *vfd = video_devdata(file); 2644 struct v4l2_frequency_band *p = arg; 2645 enum v4l2_tuner_type type; 2646 int err; 2647 2648 if (vfd->vfl_type == VFL_TYPE_SDR) { 2649 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 2650 return -EINVAL; 2651 type = p->type; 2652 } else { 2653 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2654 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2655 if (type != p->type) 2656 return -EINVAL; 2657 } 2658 if (ops->vidioc_enum_freq_bands) { 2659 err = ops->vidioc_enum_freq_bands(file, fh, p); 2660 if (err != -ENOTTY) 2661 return err; 2662 } 2663 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) { 2664 struct v4l2_tuner t = { 2665 .index = p->tuner, 2666 .type = type, 2667 }; 2668 2669 if (p->index) 2670 return -EINVAL; 2671 err = ops->vidioc_g_tuner(file, fh, &t); 2672 if (err) 2673 return err; 2674 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2675 p->rangelow = t.rangelow; 2676 p->rangehigh = t.rangehigh; 2677 p->modulation = (type == V4L2_TUNER_RADIO) ? 2678 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2679 return 0; 2680 } 2681 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) { 2682 struct v4l2_modulator m = { 2683 .index = p->tuner, 2684 }; 2685 2686 if (type != V4L2_TUNER_RADIO) 2687 return -EINVAL; 2688 if (p->index) 2689 return -EINVAL; 2690 err = ops->vidioc_g_modulator(file, fh, &m); 2691 if (err) 2692 return err; 2693 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2694 p->rangelow = m.rangelow; 2695 p->rangehigh = m.rangehigh; 2696 p->modulation = (type == V4L2_TUNER_RADIO) ? 2697 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2698 return 0; 2699 } 2700 return -ENOTTY; 2701 } 2702 2703 struct v4l2_ioctl_info { 2704 unsigned int ioctl; 2705 u32 flags; 2706 const char * const name; 2707 int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file, 2708 void *fh, void *p); 2709 void (*debug)(const void *arg, bool write_only); 2710 }; 2711 2712 /* This control needs a priority check */ 2713 #define INFO_FL_PRIO (1 << 0) 2714 /* This control can be valid if the filehandle passes a control handler. */ 2715 #define INFO_FL_CTRL (1 << 1) 2716 /* Queuing ioctl */ 2717 #define INFO_FL_QUEUE (1 << 2) 2718 /* Always copy back result, even on error */ 2719 #define INFO_FL_ALWAYS_COPY (1 << 3) 2720 /* Zero struct from after the field to the end */ 2721 #define INFO_FL_CLEAR(v4l2_struct, field) \ 2722 ((offsetof(struct v4l2_struct, field) + \ 2723 sizeof_field(struct v4l2_struct, field)) << 16) 2724 #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16) 2725 2726 #define DEFINE_V4L_STUB_FUNC(_vidioc) \ 2727 static int v4l_stub_ ## _vidioc( \ 2728 const struct v4l2_ioctl_ops *ops, \ 2729 struct file *file, void *fh, void *p) \ 2730 { \ 2731 return ops->vidioc_ ## _vidioc(file, fh, p); \ 2732 } 2733 2734 #define IOCTL_INFO(_ioctl, _func, _debug, _flags) \ 2735 [_IOC_NR(_ioctl)] = { \ 2736 .ioctl = _ioctl, \ 2737 .flags = _flags, \ 2738 .name = #_ioctl, \ 2739 .func = _func, \ 2740 .debug = _debug, \ 2741 } 2742 2743 DEFINE_V4L_STUB_FUNC(g_fbuf) 2744 DEFINE_V4L_STUB_FUNC(s_fbuf) 2745 DEFINE_V4L_STUB_FUNC(expbuf) 2746 DEFINE_V4L_STUB_FUNC(g_std) 2747 DEFINE_V4L_STUB_FUNC(g_audio) 2748 DEFINE_V4L_STUB_FUNC(s_audio) 2749 DEFINE_V4L_STUB_FUNC(g_edid) 2750 DEFINE_V4L_STUB_FUNC(s_edid) 2751 DEFINE_V4L_STUB_FUNC(g_audout) 2752 DEFINE_V4L_STUB_FUNC(s_audout) 2753 DEFINE_V4L_STUB_FUNC(g_jpegcomp) 2754 DEFINE_V4L_STUB_FUNC(s_jpegcomp) 2755 DEFINE_V4L_STUB_FUNC(enumaudio) 2756 DEFINE_V4L_STUB_FUNC(enumaudout) 2757 DEFINE_V4L_STUB_FUNC(enum_framesizes) 2758 DEFINE_V4L_STUB_FUNC(enum_frameintervals) 2759 DEFINE_V4L_STUB_FUNC(g_enc_index) 2760 DEFINE_V4L_STUB_FUNC(encoder_cmd) 2761 DEFINE_V4L_STUB_FUNC(try_encoder_cmd) 2762 DEFINE_V4L_STUB_FUNC(decoder_cmd) 2763 DEFINE_V4L_STUB_FUNC(try_decoder_cmd) 2764 DEFINE_V4L_STUB_FUNC(s_dv_timings) 2765 DEFINE_V4L_STUB_FUNC(g_dv_timings) 2766 DEFINE_V4L_STUB_FUNC(enum_dv_timings) 2767 DEFINE_V4L_STUB_FUNC(query_dv_timings) 2768 DEFINE_V4L_STUB_FUNC(dv_timings_cap) 2769 2770 static const struct v4l2_ioctl_info v4l2_ioctls[] = { 2771 IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0), 2772 IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, 0), 2773 IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0), 2774 IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO), 2775 IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2776 IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)), 2777 IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0), 2778 IOCTL_INFO(VIDIOC_S_FBUF, v4l_stub_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO), 2779 IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO), 2780 IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE), 2781 IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)), 2782 IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE), 2783 IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2784 IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2785 IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)), 2786 IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO), 2787 IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0), 2788 IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO), 2789 IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)), 2790 IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)), 2791 IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)), 2792 IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL), 2793 IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)), 2794 IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO), 2795 IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0), 2796 IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO), 2797 IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)), 2798 IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)), 2799 IOCTL_INFO(VIDIOC_G_INPUT, v4l_g_input, v4l_print_u32, 0), 2800 IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO), 2801 IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY), 2802 IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY), 2803 IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_g_output, v4l_print_u32, 0), 2804 IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO), 2805 IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)), 2806 IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0), 2807 IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO), 2808 IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)), 2809 IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO), 2810 IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)), 2811 IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO), 2812 IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)), 2813 IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)), 2814 IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO), 2815 IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)), 2816 IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)), 2817 IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0), 2818 IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO), 2819 IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0), 2820 IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0), 2821 IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)), 2822 IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)), 2823 IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0), 2824 IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO), 2825 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)), 2826 IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0), 2827 IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL), 2828 IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL), 2829 IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL), 2830 IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)), 2831 IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)), 2832 IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0), 2833 IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2834 IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2835 IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO), 2836 IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0), 2837 IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0), 2838 IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0), 2839 IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO), 2840 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)), 2841 IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0), 2842 IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0), 2843 IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0), 2844 IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0), 2845 IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2846 IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE), 2847 IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)), 2848 IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY), 2849 IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)), 2850 IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0), 2851 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)), 2852 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)), 2853 }; 2854 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) 2855 2856 static bool v4l2_is_known_ioctl(unsigned int cmd) 2857 { 2858 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2859 return false; 2860 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd; 2861 } 2862 2863 static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, 2864 struct v4l2_fh *vfh, unsigned int cmd, 2865 void *arg) 2866 { 2867 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2868 return vdev->lock; 2869 if (vfh && vfh->m2m_ctx && 2870 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) { 2871 if (vfh->m2m_ctx->q_lock) 2872 return vfh->m2m_ctx->q_lock; 2873 } 2874 if (vdev->queue && vdev->queue->lock && 2875 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) 2876 return vdev->queue->lock; 2877 return vdev->lock; 2878 } 2879 2880 /* Common ioctl debug function. This function can be used by 2881 external ioctl messages as well as internal V4L ioctl */ 2882 void v4l_printk_ioctl(const char *prefix, unsigned int cmd) 2883 { 2884 const char *dir, *type; 2885 2886 if (prefix) 2887 printk(KERN_DEBUG "%s: ", prefix); 2888 2889 switch (_IOC_TYPE(cmd)) { 2890 case 'd': 2891 type = "v4l2_int"; 2892 break; 2893 case 'V': 2894 if (_IOC_NR(cmd) >= V4L2_IOCTLS) { 2895 type = "v4l2"; 2896 break; 2897 } 2898 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name); 2899 return; 2900 default: 2901 type = "unknown"; 2902 break; 2903 } 2904 2905 switch (_IOC_DIR(cmd)) { 2906 case _IOC_NONE: dir = "--"; break; 2907 case _IOC_READ: dir = "r-"; break; 2908 case _IOC_WRITE: dir = "-w"; break; 2909 case _IOC_READ | _IOC_WRITE: dir = "rw"; break; 2910 default: dir = "*ERR*"; break; 2911 } 2912 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)", 2913 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd); 2914 } 2915 EXPORT_SYMBOL(v4l_printk_ioctl); 2916 2917 static long __video_do_ioctl(struct file *file, 2918 unsigned int cmd, void *arg) 2919 { 2920 struct video_device *vfd = video_devdata(file); 2921 struct mutex *req_queue_lock = NULL; 2922 struct mutex *lock; /* ioctl serialization mutex */ 2923 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 2924 bool write_only = false; 2925 struct v4l2_ioctl_info default_info; 2926 const struct v4l2_ioctl_info *info; 2927 void *fh = file->private_data; 2928 struct v4l2_fh *vfh = NULL; 2929 int dev_debug = vfd->dev_debug; 2930 long ret = -ENOTTY; 2931 2932 if (ops == NULL) { 2933 pr_warn("%s: has no ioctl_ops.\n", 2934 video_device_node_name(vfd)); 2935 return ret; 2936 } 2937 2938 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 2939 vfh = file->private_data; 2940 2941 /* 2942 * We need to serialize streamon/off with queueing new requests. 2943 * These ioctls may trigger the cancellation of a streaming 2944 * operation, and that should not be mixed with queueing a new 2945 * request at the same time. 2946 */ 2947 if (v4l2_device_supports_requests(vfd->v4l2_dev) && 2948 (cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF)) { 2949 req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex; 2950 2951 if (mutex_lock_interruptible(req_queue_lock)) 2952 return -ERESTARTSYS; 2953 } 2954 2955 lock = v4l2_ioctl_get_lock(vfd, vfh, cmd, arg); 2956 2957 if (lock && mutex_lock_interruptible(lock)) { 2958 if (req_queue_lock) 2959 mutex_unlock(req_queue_lock); 2960 return -ERESTARTSYS; 2961 } 2962 2963 if (!video_is_registered(vfd)) { 2964 ret = -ENODEV; 2965 goto unlock; 2966 } 2967 2968 if (v4l2_is_known_ioctl(cmd)) { 2969 info = &v4l2_ioctls[_IOC_NR(cmd)]; 2970 2971 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) && 2972 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler)) 2973 goto done; 2974 2975 if (vfh && (info->flags & INFO_FL_PRIO)) { 2976 ret = v4l2_prio_check(vfd->prio, vfh->prio); 2977 if (ret) 2978 goto done; 2979 } 2980 } else { 2981 default_info.ioctl = cmd; 2982 default_info.flags = 0; 2983 default_info.debug = v4l_print_default; 2984 info = &default_info; 2985 } 2986 2987 write_only = _IOC_DIR(cmd) == _IOC_WRITE; 2988 if (info != &default_info) { 2989 ret = info->func(ops, file, fh, arg); 2990 } else if (!ops->vidioc_default) { 2991 ret = -ENOTTY; 2992 } else { 2993 ret = ops->vidioc_default(file, fh, 2994 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0, 2995 cmd, arg); 2996 } 2997 2998 done: 2999 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) { 3000 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) && 3001 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF)) 3002 goto unlock; 3003 3004 v4l_printk_ioctl(video_device_node_name(vfd), cmd); 3005 if (ret < 0) 3006 pr_cont(": error %ld", ret); 3007 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG)) 3008 pr_cont("\n"); 3009 else if (_IOC_DIR(cmd) == _IOC_NONE) 3010 info->debug(arg, write_only); 3011 else { 3012 pr_cont(": "); 3013 info->debug(arg, write_only); 3014 } 3015 } 3016 3017 unlock: 3018 if (lock) 3019 mutex_unlock(lock); 3020 if (req_queue_lock) 3021 mutex_unlock(req_queue_lock); 3022 return ret; 3023 } 3024 3025 static int check_array_args(unsigned int cmd, void *parg, size_t *array_size, 3026 void __user **user_ptr, void ***kernel_ptr) 3027 { 3028 int ret = 0; 3029 3030 switch (cmd) { 3031 case VIDIOC_PREPARE_BUF: 3032 case VIDIOC_QUERYBUF: 3033 case VIDIOC_QBUF: 3034 case VIDIOC_DQBUF: { 3035 struct v4l2_buffer *buf = parg; 3036 3037 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) { 3038 if (buf->length > VIDEO_MAX_PLANES) { 3039 ret = -EINVAL; 3040 break; 3041 } 3042 *user_ptr = (void __user *)buf->m.planes; 3043 *kernel_ptr = (void **)&buf->m.planes; 3044 *array_size = sizeof(struct v4l2_plane) * buf->length; 3045 ret = 1; 3046 } 3047 break; 3048 } 3049 3050 case VIDIOC_G_EDID: 3051 case VIDIOC_S_EDID: { 3052 struct v4l2_edid *edid = parg; 3053 3054 if (edid->blocks) { 3055 if (edid->blocks > 256) { 3056 ret = -EINVAL; 3057 break; 3058 } 3059 *user_ptr = (void __user *)edid->edid; 3060 *kernel_ptr = (void **)&edid->edid; 3061 *array_size = edid->blocks * 128; 3062 ret = 1; 3063 } 3064 break; 3065 } 3066 3067 case VIDIOC_S_EXT_CTRLS: 3068 case VIDIOC_G_EXT_CTRLS: 3069 case VIDIOC_TRY_EXT_CTRLS: { 3070 struct v4l2_ext_controls *ctrls = parg; 3071 3072 if (ctrls->count != 0) { 3073 if (ctrls->count > V4L2_CID_MAX_CTRLS) { 3074 ret = -EINVAL; 3075 break; 3076 } 3077 *user_ptr = (void __user *)ctrls->controls; 3078 *kernel_ptr = (void **)&ctrls->controls; 3079 *array_size = sizeof(struct v4l2_ext_control) 3080 * ctrls->count; 3081 ret = 1; 3082 } 3083 break; 3084 } 3085 case VIDIOC_G_FMT: 3086 case VIDIOC_S_FMT: 3087 case VIDIOC_TRY_FMT: { 3088 struct v4l2_format *fmt = parg; 3089 3090 if (fmt->type != V4L2_BUF_TYPE_VIDEO_OVERLAY && 3091 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY) 3092 break; 3093 if (fmt->fmt.win.clipcount > 2048) 3094 return -EINVAL; 3095 if (!fmt->fmt.win.clipcount) 3096 break; 3097 3098 *user_ptr = (void __user *)fmt->fmt.win.clips; 3099 *kernel_ptr = (void **)&fmt->fmt.win.clips; 3100 *array_size = sizeof(struct v4l2_clip) 3101 * fmt->fmt.win.clipcount; 3102 3103 ret = 1; 3104 break; 3105 } 3106 } 3107 3108 return ret; 3109 } 3110 3111 static unsigned int video_translate_cmd(unsigned int cmd) 3112 { 3113 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3114 switch (cmd) { 3115 case VIDIOC_DQEVENT_TIME32: 3116 return VIDIOC_DQEVENT; 3117 case VIDIOC_QUERYBUF_TIME32: 3118 return VIDIOC_QUERYBUF; 3119 case VIDIOC_QBUF_TIME32: 3120 return VIDIOC_QBUF; 3121 case VIDIOC_DQBUF_TIME32: 3122 return VIDIOC_DQBUF; 3123 case VIDIOC_PREPARE_BUF_TIME32: 3124 return VIDIOC_PREPARE_BUF; 3125 } 3126 #endif 3127 if (in_compat_syscall()) 3128 return v4l2_compat_translate_cmd(cmd); 3129 3130 return cmd; 3131 } 3132 3133 static int video_get_user(void __user *arg, void *parg, 3134 unsigned int real_cmd, unsigned int cmd, 3135 bool *always_copy) 3136 { 3137 unsigned int n = _IOC_SIZE(real_cmd); 3138 int err = 0; 3139 3140 if (!(_IOC_DIR(cmd) & _IOC_WRITE)) { 3141 /* read-only ioctl */ 3142 memset(parg, 0, n); 3143 return 0; 3144 } 3145 3146 /* 3147 * In some cases, only a few fields are used as input, 3148 * i.e. when the app sets "index" and then the driver 3149 * fills in the rest of the structure for the thing 3150 * with that index. We only need to copy up the first 3151 * non-input field. 3152 */ 3153 if (v4l2_is_known_ioctl(real_cmd)) { 3154 u32 flags = v4l2_ioctls[_IOC_NR(real_cmd)].flags; 3155 3156 if (flags & INFO_FL_CLEAR_MASK) 3157 n = (flags & INFO_FL_CLEAR_MASK) >> 16; 3158 *always_copy = flags & INFO_FL_ALWAYS_COPY; 3159 } 3160 3161 if (cmd == real_cmd) { 3162 if (copy_from_user(parg, (void __user *)arg, n)) 3163 err = -EFAULT; 3164 } else if (in_compat_syscall()) { 3165 memset(parg, 0, n); 3166 err = v4l2_compat_get_user(arg, parg, cmd); 3167 } else { 3168 memset(parg, 0, n); 3169 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3170 switch (cmd) { 3171 case VIDIOC_QUERYBUF_TIME32: 3172 case VIDIOC_QBUF_TIME32: 3173 case VIDIOC_DQBUF_TIME32: 3174 case VIDIOC_PREPARE_BUF_TIME32: { 3175 struct v4l2_buffer_time32 vb32; 3176 struct v4l2_buffer *vb = parg; 3177 3178 if (copy_from_user(&vb32, arg, sizeof(vb32))) 3179 return -EFAULT; 3180 3181 *vb = (struct v4l2_buffer) { 3182 .index = vb32.index, 3183 .type = vb32.type, 3184 .bytesused = vb32.bytesused, 3185 .flags = vb32.flags, 3186 .field = vb32.field, 3187 .timestamp.tv_sec = vb32.timestamp.tv_sec, 3188 .timestamp.tv_usec = vb32.timestamp.tv_usec, 3189 .timecode = vb32.timecode, 3190 .sequence = vb32.sequence, 3191 .memory = vb32.memory, 3192 .m.userptr = vb32.m.userptr, 3193 .length = vb32.length, 3194 .request_fd = vb32.request_fd, 3195 }; 3196 break; 3197 } 3198 } 3199 #endif 3200 } 3201 3202 /* zero out anything we don't copy from userspace */ 3203 if (!err && n < _IOC_SIZE(real_cmd)) 3204 memset((u8 *)parg + n, 0, _IOC_SIZE(real_cmd) - n); 3205 return err; 3206 } 3207 3208 static int video_put_user(void __user *arg, void *parg, 3209 unsigned int real_cmd, unsigned int cmd) 3210 { 3211 if (!(_IOC_DIR(cmd) & _IOC_READ)) 3212 return 0; 3213 3214 if (cmd == real_cmd) { 3215 /* Copy results into user buffer */ 3216 if (copy_to_user(arg, parg, _IOC_SIZE(cmd))) 3217 return -EFAULT; 3218 return 0; 3219 } 3220 3221 if (in_compat_syscall()) 3222 return v4l2_compat_put_user(arg, parg, cmd); 3223 3224 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3225 switch (cmd) { 3226 case VIDIOC_DQEVENT_TIME32: { 3227 struct v4l2_event *ev = parg; 3228 struct v4l2_event_time32 ev32; 3229 3230 memset(&ev32, 0, sizeof(ev32)); 3231 3232 ev32.type = ev->type; 3233 ev32.pending = ev->pending; 3234 ev32.sequence = ev->sequence; 3235 ev32.timestamp.tv_sec = ev->timestamp.tv_sec; 3236 ev32.timestamp.tv_nsec = ev->timestamp.tv_nsec; 3237 ev32.id = ev->id; 3238 3239 memcpy(&ev32.u, &ev->u, sizeof(ev->u)); 3240 memcpy(&ev32.reserved, &ev->reserved, sizeof(ev->reserved)); 3241 3242 if (copy_to_user(arg, &ev32, sizeof(ev32))) 3243 return -EFAULT; 3244 break; 3245 } 3246 case VIDIOC_QUERYBUF_TIME32: 3247 case VIDIOC_QBUF_TIME32: 3248 case VIDIOC_DQBUF_TIME32: 3249 case VIDIOC_PREPARE_BUF_TIME32: { 3250 struct v4l2_buffer *vb = parg; 3251 struct v4l2_buffer_time32 vb32; 3252 3253 memset(&vb32, 0, sizeof(vb32)); 3254 3255 vb32.index = vb->index; 3256 vb32.type = vb->type; 3257 vb32.bytesused = vb->bytesused; 3258 vb32.flags = vb->flags; 3259 vb32.field = vb->field; 3260 vb32.timestamp.tv_sec = vb->timestamp.tv_sec; 3261 vb32.timestamp.tv_usec = vb->timestamp.tv_usec; 3262 vb32.timecode = vb->timecode; 3263 vb32.sequence = vb->sequence; 3264 vb32.memory = vb->memory; 3265 vb32.m.userptr = vb->m.userptr; 3266 vb32.length = vb->length; 3267 vb32.request_fd = vb->request_fd; 3268 3269 if (copy_to_user(arg, &vb32, sizeof(vb32))) 3270 return -EFAULT; 3271 break; 3272 } 3273 } 3274 #endif 3275 3276 return 0; 3277 } 3278 3279 long 3280 video_usercopy(struct file *file, unsigned int orig_cmd, unsigned long arg, 3281 v4l2_kioctl func) 3282 { 3283 char sbuf[128]; 3284 void *mbuf = NULL, *array_buf = NULL; 3285 void *parg = (void *)arg; 3286 long err = -EINVAL; 3287 bool has_array_args; 3288 bool always_copy = false; 3289 size_t array_size = 0; 3290 void __user *user_ptr = NULL; 3291 void **kernel_ptr = NULL; 3292 unsigned int cmd = video_translate_cmd(orig_cmd); 3293 const size_t ioc_size = _IOC_SIZE(cmd); 3294 3295 /* Copy arguments into temp kernel buffer */ 3296 if (_IOC_DIR(cmd) != _IOC_NONE) { 3297 if (ioc_size <= sizeof(sbuf)) { 3298 parg = sbuf; 3299 } else { 3300 /* too big to allocate from stack */ 3301 mbuf = kmalloc(ioc_size, GFP_KERNEL); 3302 if (NULL == mbuf) 3303 return -ENOMEM; 3304 parg = mbuf; 3305 } 3306 3307 err = video_get_user((void __user *)arg, parg, cmd, 3308 orig_cmd, &always_copy); 3309 if (err) 3310 goto out; 3311 } 3312 3313 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr); 3314 if (err < 0) 3315 goto out; 3316 has_array_args = err; 3317 3318 if (has_array_args) { 3319 array_buf = kvmalloc(array_size, GFP_KERNEL); 3320 err = -ENOMEM; 3321 if (array_buf == NULL) 3322 goto out_array_args; 3323 err = -EFAULT; 3324 if (in_compat_syscall()) 3325 err = v4l2_compat_get_array_args(file, array_buf, 3326 user_ptr, array_size, 3327 orig_cmd, parg); 3328 else 3329 err = copy_from_user(array_buf, user_ptr, array_size) ? 3330 -EFAULT : 0; 3331 if (err) 3332 goto out_array_args; 3333 *kernel_ptr = array_buf; 3334 } 3335 3336 /* Handles IOCTL */ 3337 err = func(file, cmd, parg); 3338 if (err == -ENOTTY || err == -ENOIOCTLCMD) { 3339 err = -ENOTTY; 3340 goto out; 3341 } 3342 3343 if (err == 0) { 3344 if (cmd == VIDIOC_DQBUF) 3345 trace_v4l2_dqbuf(video_devdata(file)->minor, parg); 3346 else if (cmd == VIDIOC_QBUF) 3347 trace_v4l2_qbuf(video_devdata(file)->minor, parg); 3348 } 3349 3350 if (has_array_args) { 3351 *kernel_ptr = (void __force *)user_ptr; 3352 if (in_compat_syscall()) { 3353 int put_err; 3354 3355 put_err = v4l2_compat_put_array_args(file, user_ptr, 3356 array_buf, 3357 array_size, 3358 orig_cmd, parg); 3359 if (put_err) 3360 err = put_err; 3361 } else if (copy_to_user(user_ptr, array_buf, array_size)) { 3362 err = -EFAULT; 3363 } 3364 goto out_array_args; 3365 } 3366 /* 3367 * Some ioctls can return an error, but still have valid 3368 * results that must be returned. 3369 */ 3370 if (err < 0 && !always_copy) 3371 goto out; 3372 3373 out_array_args: 3374 if (video_put_user((void __user *)arg, parg, cmd, orig_cmd)) 3375 err = -EFAULT; 3376 out: 3377 kvfree(array_buf); 3378 kfree(mbuf); 3379 return err; 3380 } 3381 3382 long video_ioctl2(struct file *file, 3383 unsigned int cmd, unsigned long arg) 3384 { 3385 return video_usercopy(file, cmd, arg, __video_do_ioctl); 3386 } 3387 EXPORT_SYMBOL(video_ioctl2); 3388