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/mm.h> 12 #include <linux/module.h> 13 #include <linux/slab.h> 14 #include <linux/types.h> 15 #include <linux/kernel.h> 16 #include <linux/version.h> 17 18 #include <linux/videodev2.h> 19 20 #include <media/v4l2-common.h> 21 #include <media/v4l2-ioctl.h> 22 #include <media/v4l2-ctrls.h> 23 #include <media/v4l2-fh.h> 24 #include <media/v4l2-event.h> 25 #include <media/v4l2-device.h> 26 #include <media/videobuf2-v4l2.h> 27 #include <media/v4l2-mc.h> 28 #include <media/v4l2-mem2mem.h> 29 30 #include <trace/events/v4l2.h> 31 32 /* Zero out the end of the struct pointed to by p. Everything after, but 33 * not including, the specified field is cleared. */ 34 #define CLEAR_AFTER_FIELD(p, field) \ 35 memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \ 36 0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field)) 37 38 #define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls) 39 40 struct std_descr { 41 v4l2_std_id std; 42 const char *descr; 43 }; 44 45 static const struct std_descr standards[] = { 46 { V4L2_STD_NTSC, "NTSC" }, 47 { V4L2_STD_NTSC_M, "NTSC-M" }, 48 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" }, 49 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" }, 50 { V4L2_STD_NTSC_443, "NTSC-443" }, 51 { V4L2_STD_PAL, "PAL" }, 52 { V4L2_STD_PAL_BG, "PAL-BG" }, 53 { V4L2_STD_PAL_B, "PAL-B" }, 54 { V4L2_STD_PAL_B1, "PAL-B1" }, 55 { V4L2_STD_PAL_G, "PAL-G" }, 56 { V4L2_STD_PAL_H, "PAL-H" }, 57 { V4L2_STD_PAL_I, "PAL-I" }, 58 { V4L2_STD_PAL_DK, "PAL-DK" }, 59 { V4L2_STD_PAL_D, "PAL-D" }, 60 { V4L2_STD_PAL_D1, "PAL-D1" }, 61 { V4L2_STD_PAL_K, "PAL-K" }, 62 { V4L2_STD_PAL_M, "PAL-M" }, 63 { V4L2_STD_PAL_N, "PAL-N" }, 64 { V4L2_STD_PAL_Nc, "PAL-Nc" }, 65 { V4L2_STD_PAL_60, "PAL-60" }, 66 { V4L2_STD_SECAM, "SECAM" }, 67 { V4L2_STD_SECAM_B, "SECAM-B" }, 68 { V4L2_STD_SECAM_G, "SECAM-G" }, 69 { V4L2_STD_SECAM_H, "SECAM-H" }, 70 { V4L2_STD_SECAM_DK, "SECAM-DK" }, 71 { V4L2_STD_SECAM_D, "SECAM-D" }, 72 { V4L2_STD_SECAM_K, "SECAM-K" }, 73 { V4L2_STD_SECAM_K1, "SECAM-K1" }, 74 { V4L2_STD_SECAM_L, "SECAM-L" }, 75 { V4L2_STD_SECAM_LC, "SECAM-Lc" }, 76 { 0, "Unknown" } 77 }; 78 79 /* video4linux standard ID conversion to standard name 80 */ 81 const char *v4l2_norm_to_name(v4l2_std_id id) 82 { 83 u32 myid = id; 84 int i; 85 86 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle 87 64 bit comparisons. So, on that architecture, with some gcc 88 variants, compilation fails. Currently, the max value is 30bit wide. 89 */ 90 BUG_ON(myid != id); 91 92 for (i = 0; standards[i].std; i++) 93 if (myid == standards[i].std) 94 break; 95 return standards[i].descr; 96 } 97 EXPORT_SYMBOL(v4l2_norm_to_name); 98 99 /* Returns frame period for the given standard */ 100 void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod) 101 { 102 if (id & V4L2_STD_525_60) { 103 frameperiod->numerator = 1001; 104 frameperiod->denominator = 30000; 105 } else { 106 frameperiod->numerator = 1; 107 frameperiod->denominator = 25; 108 } 109 } 110 EXPORT_SYMBOL(v4l2_video_std_frame_period); 111 112 /* Fill in the fields of a v4l2_standard structure according to the 113 'id' and 'transmission' parameters. Returns negative on error. */ 114 int v4l2_video_std_construct(struct v4l2_standard *vs, 115 int id, const char *name) 116 { 117 vs->id = id; 118 v4l2_video_std_frame_period(id, &vs->frameperiod); 119 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625; 120 strscpy(vs->name, name, sizeof(vs->name)); 121 return 0; 122 } 123 EXPORT_SYMBOL(v4l2_video_std_construct); 124 125 /* Fill in the fields of a v4l2_standard structure according to the 126 * 'id' and 'vs->index' parameters. Returns negative on error. */ 127 int v4l_video_std_enumstd(struct v4l2_standard *vs, v4l2_std_id id) 128 { 129 v4l2_std_id curr_id = 0; 130 unsigned int index = vs->index, i, j = 0; 131 const char *descr = ""; 132 133 /* Return -ENODATA if the id for the current input 134 or output is 0, meaning that it doesn't support this API. */ 135 if (id == 0) 136 return -ENODATA; 137 138 /* Return norm array in a canonical way */ 139 for (i = 0; i <= index && id; i++) { 140 /* last std value in the standards array is 0, so this 141 while always ends there since (id & 0) == 0. */ 142 while ((id & standards[j].std) != standards[j].std) 143 j++; 144 curr_id = standards[j].std; 145 descr = standards[j].descr; 146 j++; 147 if (curr_id == 0) 148 break; 149 if (curr_id != V4L2_STD_PAL && 150 curr_id != V4L2_STD_SECAM && 151 curr_id != V4L2_STD_NTSC) 152 id &= ~curr_id; 153 } 154 if (i <= index) 155 return -EINVAL; 156 157 v4l2_video_std_construct(vs, curr_id, descr); 158 return 0; 159 } 160 161 /* ----------------------------------------------------------------- */ 162 /* some arrays for pretty-printing debug messages of enum types */ 163 164 const char *v4l2_field_names[] = { 165 [V4L2_FIELD_ANY] = "any", 166 [V4L2_FIELD_NONE] = "none", 167 [V4L2_FIELD_TOP] = "top", 168 [V4L2_FIELD_BOTTOM] = "bottom", 169 [V4L2_FIELD_INTERLACED] = "interlaced", 170 [V4L2_FIELD_SEQ_TB] = "seq-tb", 171 [V4L2_FIELD_SEQ_BT] = "seq-bt", 172 [V4L2_FIELD_ALTERNATE] = "alternate", 173 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb", 174 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt", 175 }; 176 EXPORT_SYMBOL(v4l2_field_names); 177 178 const char *v4l2_type_names[] = { 179 [0] = "0", 180 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap", 181 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay", 182 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out", 183 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap", 184 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out", 185 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap", 186 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out", 187 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay", 188 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane", 189 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane", 190 [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap", 191 [V4L2_BUF_TYPE_SDR_OUTPUT] = "sdr-out", 192 [V4L2_BUF_TYPE_META_CAPTURE] = "meta-cap", 193 [V4L2_BUF_TYPE_META_OUTPUT] = "meta-out", 194 }; 195 EXPORT_SYMBOL(v4l2_type_names); 196 197 static const char *v4l2_memory_names[] = { 198 [V4L2_MEMORY_MMAP] = "mmap", 199 [V4L2_MEMORY_USERPTR] = "userptr", 200 [V4L2_MEMORY_OVERLAY] = "overlay", 201 [V4L2_MEMORY_DMABUF] = "dmabuf", 202 }; 203 204 #define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown") 205 206 /* ------------------------------------------------------------------ */ 207 /* debug help functions */ 208 209 static void v4l_print_querycap(const void *arg, bool write_only) 210 { 211 const struct v4l2_capability *p = arg; 212 213 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, capabilities=0x%08x, device_caps=0x%08x\n", 214 (int)sizeof(p->driver), p->driver, 215 (int)sizeof(p->card), p->card, 216 (int)sizeof(p->bus_info), p->bus_info, 217 p->version, p->capabilities, p->device_caps); 218 } 219 220 static void v4l_print_enuminput(const void *arg, bool write_only) 221 { 222 const struct v4l2_input *p = arg; 223 224 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, std=0x%08Lx, status=0x%x, capabilities=0x%x\n", 225 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, 226 p->tuner, (unsigned long long)p->std, p->status, 227 p->capabilities); 228 } 229 230 static void v4l_print_enumoutput(const void *arg, bool write_only) 231 { 232 const struct v4l2_output *p = arg; 233 234 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, modulator=%u, std=0x%08Lx, capabilities=0x%x\n", 235 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, 236 p->modulator, (unsigned long long)p->std, p->capabilities); 237 } 238 239 static void v4l_print_audio(const void *arg, bool write_only) 240 { 241 const struct v4l2_audio *p = arg; 242 243 if (write_only) 244 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode); 245 else 246 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", 247 p->index, (int)sizeof(p->name), p->name, 248 p->capability, p->mode); 249 } 250 251 static void v4l_print_audioout(const void *arg, bool write_only) 252 { 253 const struct v4l2_audioout *p = arg; 254 255 if (write_only) 256 pr_cont("index=%u\n", p->index); 257 else 258 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", 259 p->index, (int)sizeof(p->name), p->name, 260 p->capability, p->mode); 261 } 262 263 static void v4l_print_fmtdesc(const void *arg, bool write_only) 264 { 265 const struct v4l2_fmtdesc *p = arg; 266 267 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%c%c%c%c, description='%.*s'\n", 268 p->index, prt_names(p->type, v4l2_type_names), 269 p->flags, (p->pixelformat & 0xff), 270 (p->pixelformat >> 8) & 0xff, 271 (p->pixelformat >> 16) & 0xff, 272 (p->pixelformat >> 24) & 0xff, 273 (int)sizeof(p->description), p->description); 274 } 275 276 static void v4l_print_format(const void *arg, bool write_only) 277 { 278 const struct v4l2_format *p = arg; 279 const struct v4l2_pix_format *pix; 280 const struct v4l2_pix_format_mplane *mp; 281 const struct v4l2_vbi_format *vbi; 282 const struct v4l2_sliced_vbi_format *sliced; 283 const struct v4l2_window *win; 284 const struct v4l2_sdr_format *sdr; 285 const struct v4l2_meta_format *meta; 286 u32 planes; 287 unsigned i; 288 289 pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); 290 switch (p->type) { 291 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 292 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 293 pix = &p->fmt.pix; 294 pr_cont(", width=%u, height=%u, pixelformat=%c%c%c%c, field=%s, bytesperline=%u, sizeimage=%u, colorspace=%d, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n", 295 pix->width, pix->height, 296 (pix->pixelformat & 0xff), 297 (pix->pixelformat >> 8) & 0xff, 298 (pix->pixelformat >> 16) & 0xff, 299 (pix->pixelformat >> 24) & 0xff, 300 prt_names(pix->field, v4l2_field_names), 301 pix->bytesperline, pix->sizeimage, 302 pix->colorspace, pix->flags, pix->ycbcr_enc, 303 pix->quantization, pix->xfer_func); 304 break; 305 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 306 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 307 mp = &p->fmt.pix_mp; 308 pr_cont(", width=%u, height=%u, format=%c%c%c%c, field=%s, colorspace=%d, num_planes=%u, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n", 309 mp->width, mp->height, 310 (mp->pixelformat & 0xff), 311 (mp->pixelformat >> 8) & 0xff, 312 (mp->pixelformat >> 16) & 0xff, 313 (mp->pixelformat >> 24) & 0xff, 314 prt_names(mp->field, v4l2_field_names), 315 mp->colorspace, mp->num_planes, mp->flags, 316 mp->ycbcr_enc, mp->quantization, mp->xfer_func); 317 planes = min_t(u32, mp->num_planes, VIDEO_MAX_PLANES); 318 for (i = 0; i < planes; i++) 319 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i, 320 mp->plane_fmt[i].bytesperline, 321 mp->plane_fmt[i].sizeimage); 322 break; 323 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 324 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 325 win = &p->fmt.win; 326 /* Note: we can't print the clip list here since the clips 327 * pointer is a userspace pointer, not a kernelspace 328 * pointer. */ 329 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", 330 win->w.width, win->w.height, win->w.left, win->w.top, 331 prt_names(win->field, v4l2_field_names), 332 win->chromakey, win->clipcount, win->clips, 333 win->bitmap, win->global_alpha); 334 break; 335 case V4L2_BUF_TYPE_VBI_CAPTURE: 336 case V4L2_BUF_TYPE_VBI_OUTPUT: 337 vbi = &p->fmt.vbi; 338 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n", 339 vbi->sampling_rate, vbi->offset, 340 vbi->samples_per_line, 341 (vbi->sample_format & 0xff), 342 (vbi->sample_format >> 8) & 0xff, 343 (vbi->sample_format >> 16) & 0xff, 344 (vbi->sample_format >> 24) & 0xff, 345 vbi->start[0], vbi->start[1], 346 vbi->count[0], vbi->count[1]); 347 break; 348 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 349 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 350 sliced = &p->fmt.sliced; 351 pr_cont(", service_set=0x%08x, io_size=%d\n", 352 sliced->service_set, sliced->io_size); 353 for (i = 0; i < 24; i++) 354 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, 355 sliced->service_lines[0][i], 356 sliced->service_lines[1][i]); 357 break; 358 case V4L2_BUF_TYPE_SDR_CAPTURE: 359 case V4L2_BUF_TYPE_SDR_OUTPUT: 360 sdr = &p->fmt.sdr; 361 pr_cont(", pixelformat=%c%c%c%c\n", 362 (sdr->pixelformat >> 0) & 0xff, 363 (sdr->pixelformat >> 8) & 0xff, 364 (sdr->pixelformat >> 16) & 0xff, 365 (sdr->pixelformat >> 24) & 0xff); 366 break; 367 case V4L2_BUF_TYPE_META_CAPTURE: 368 case V4L2_BUF_TYPE_META_OUTPUT: 369 meta = &p->fmt.meta; 370 pr_cont(", dataformat=%c%c%c%c, buffersize=%u\n", 371 (meta->dataformat >> 0) & 0xff, 372 (meta->dataformat >> 8) & 0xff, 373 (meta->dataformat >> 16) & 0xff, 374 (meta->dataformat >> 24) & 0xff, 375 meta->buffersize); 376 break; 377 } 378 } 379 380 static void v4l_print_framebuffer(const void *arg, bool write_only) 381 { 382 const struct v4l2_framebuffer *p = arg; 383 384 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, height=%u, pixelformat=%c%c%c%c, bytesperline=%u, sizeimage=%u, colorspace=%d\n", 385 p->capability, p->flags, p->base, 386 p->fmt.width, p->fmt.height, 387 (p->fmt.pixelformat & 0xff), 388 (p->fmt.pixelformat >> 8) & 0xff, 389 (p->fmt.pixelformat >> 16) & 0xff, 390 (p->fmt.pixelformat >> 24) & 0xff, 391 p->fmt.bytesperline, p->fmt.sizeimage, 392 p->fmt.colorspace); 393 } 394 395 static void v4l_print_buftype(const void *arg, bool write_only) 396 { 397 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names)); 398 } 399 400 static void v4l_print_modulator(const void *arg, bool write_only) 401 { 402 const struct v4l2_modulator *p = arg; 403 404 if (write_only) 405 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans); 406 else 407 pr_cont("index=%u, name=%.*s, capability=0x%x, rangelow=%u, rangehigh=%u, txsubchans=0x%x\n", 408 p->index, (int)sizeof(p->name), p->name, p->capability, 409 p->rangelow, p->rangehigh, p->txsubchans); 410 } 411 412 static void v4l_print_tuner(const void *arg, bool write_only) 413 { 414 const struct v4l2_tuner *p = arg; 415 416 if (write_only) 417 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode); 418 else 419 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", 420 p->index, (int)sizeof(p->name), p->name, p->type, 421 p->capability, p->rangelow, 422 p->rangehigh, p->signal, p->afc, 423 p->rxsubchans, p->audmode); 424 } 425 426 static void v4l_print_frequency(const void *arg, bool write_only) 427 { 428 const struct v4l2_frequency *p = arg; 429 430 pr_cont("tuner=%u, type=%u, frequency=%u\n", 431 p->tuner, p->type, p->frequency); 432 } 433 434 static void v4l_print_standard(const void *arg, bool write_only) 435 { 436 const struct v4l2_standard *p = arg; 437 438 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, framelines=%u\n", 439 p->index, 440 (unsigned long long)p->id, (int)sizeof(p->name), p->name, 441 p->frameperiod.numerator, 442 p->frameperiod.denominator, 443 p->framelines); 444 } 445 446 static void v4l_print_std(const void *arg, bool write_only) 447 { 448 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg); 449 } 450 451 static void v4l_print_hw_freq_seek(const void *arg, bool write_only) 452 { 453 const struct v4l2_hw_freq_seek *p = arg; 454 455 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, rangelow=%u, rangehigh=%u\n", 456 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing, 457 p->rangelow, p->rangehigh); 458 } 459 460 static void v4l_print_requestbuffers(const void *arg, bool write_only) 461 { 462 const struct v4l2_requestbuffers *p = arg; 463 464 pr_cont("count=%d, type=%s, memory=%s\n", 465 p->count, 466 prt_names(p->type, v4l2_type_names), 467 prt_names(p->memory, v4l2_memory_names)); 468 } 469 470 static void v4l_print_buffer(const void *arg, bool write_only) 471 { 472 const struct v4l2_buffer *p = arg; 473 const struct v4l2_timecode *tc = &p->timecode; 474 const struct v4l2_plane *plane; 475 int i; 476 477 pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, request_fd=%d, flags=0x%08x, field=%s, sequence=%d, memory=%s", 478 p->timestamp.tv_sec / 3600, 479 (int)(p->timestamp.tv_sec / 60) % 60, 480 (int)(p->timestamp.tv_sec % 60), 481 (long)p->timestamp.tv_usec, 482 p->index, 483 prt_names(p->type, v4l2_type_names), p->request_fd, 484 p->flags, prt_names(p->field, v4l2_field_names), 485 p->sequence, prt_names(p->memory, v4l2_memory_names)); 486 487 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) { 488 pr_cont("\n"); 489 for (i = 0; i < p->length; ++i) { 490 plane = &p->m.planes[i]; 491 printk(KERN_DEBUG 492 "plane %d: bytesused=%d, data_offset=0x%08x, offset/userptr=0x%lx, length=%d\n", 493 i, plane->bytesused, plane->data_offset, 494 plane->m.userptr, plane->length); 495 } 496 } else { 497 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n", 498 p->bytesused, p->m.userptr, p->length); 499 } 500 501 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, flags=0x%08x, frames=%d, userbits=0x%08x\n", 502 tc->hours, tc->minutes, tc->seconds, 503 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits); 504 } 505 506 static void v4l_print_exportbuffer(const void *arg, bool write_only) 507 { 508 const struct v4l2_exportbuffer *p = arg; 509 510 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n", 511 p->fd, prt_names(p->type, v4l2_type_names), 512 p->index, p->plane, p->flags); 513 } 514 515 static void v4l_print_create_buffers(const void *arg, bool write_only) 516 { 517 const struct v4l2_create_buffers *p = arg; 518 519 pr_cont("index=%d, count=%d, memory=%s, ", 520 p->index, p->count, 521 prt_names(p->memory, v4l2_memory_names)); 522 v4l_print_format(&p->format, write_only); 523 } 524 525 static void v4l_print_streamparm(const void *arg, bool write_only) 526 { 527 const struct v4l2_streamparm *p = arg; 528 529 pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); 530 531 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 532 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) { 533 const struct v4l2_captureparm *c = &p->parm.capture; 534 535 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, extendedmode=%d, readbuffers=%d\n", 536 c->capability, c->capturemode, 537 c->timeperframe.numerator, c->timeperframe.denominator, 538 c->extendedmode, c->readbuffers); 539 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT || 540 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { 541 const struct v4l2_outputparm *c = &p->parm.output; 542 543 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, extendedmode=%d, writebuffers=%d\n", 544 c->capability, c->outputmode, 545 c->timeperframe.numerator, c->timeperframe.denominator, 546 c->extendedmode, c->writebuffers); 547 } else { 548 pr_cont("\n"); 549 } 550 } 551 552 static void v4l_print_queryctrl(const void *arg, bool write_only) 553 { 554 const struct v4l2_queryctrl *p = arg; 555 556 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, step=%d, default=%d, flags=0x%08x\n", 557 p->id, p->type, (int)sizeof(p->name), p->name, 558 p->minimum, p->maximum, 559 p->step, p->default_value, p->flags); 560 } 561 562 static void v4l_print_query_ext_ctrl(const void *arg, bool write_only) 563 { 564 const struct v4l2_query_ext_ctrl *p = arg; 565 566 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", 567 p->id, p->type, (int)sizeof(p->name), p->name, 568 p->minimum, p->maximum, 569 p->step, p->default_value, p->flags, 570 p->elem_size, p->elems, p->nr_of_dims, 571 p->dims[0], p->dims[1], p->dims[2], p->dims[3]); 572 } 573 574 static void v4l_print_querymenu(const void *arg, bool write_only) 575 { 576 const struct v4l2_querymenu *p = arg; 577 578 pr_cont("id=0x%x, index=%d\n", p->id, p->index); 579 } 580 581 static void v4l_print_control(const void *arg, bool write_only) 582 { 583 const struct v4l2_control *p = arg; 584 585 pr_cont("id=0x%x, value=%d\n", p->id, p->value); 586 } 587 588 static void v4l_print_ext_controls(const void *arg, bool write_only) 589 { 590 const struct v4l2_ext_controls *p = arg; 591 int i; 592 593 pr_cont("which=0x%x, count=%d, error_idx=%d, request_fd=%d", 594 p->which, p->count, p->error_idx, p->request_fd); 595 for (i = 0; i < p->count; i++) { 596 if (!p->controls[i].size) 597 pr_cont(", id/val=0x%x/0x%x", 598 p->controls[i].id, p->controls[i].value); 599 else 600 pr_cont(", id/size=0x%x/%u", 601 p->controls[i].id, p->controls[i].size); 602 } 603 pr_cont("\n"); 604 } 605 606 static void v4l_print_cropcap(const void *arg, bool write_only) 607 { 608 const struct v4l2_cropcap *p = arg; 609 610 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, defrect wxh=%dx%d, x,y=%d,%d, pixelaspect %d/%d\n", 611 prt_names(p->type, v4l2_type_names), 612 p->bounds.width, p->bounds.height, 613 p->bounds.left, p->bounds.top, 614 p->defrect.width, p->defrect.height, 615 p->defrect.left, p->defrect.top, 616 p->pixelaspect.numerator, p->pixelaspect.denominator); 617 } 618 619 static void v4l_print_crop(const void *arg, bool write_only) 620 { 621 const struct v4l2_crop *p = arg; 622 623 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n", 624 prt_names(p->type, v4l2_type_names), 625 p->c.width, p->c.height, 626 p->c.left, p->c.top); 627 } 628 629 static void v4l_print_selection(const void *arg, bool write_only) 630 { 631 const struct v4l2_selection *p = arg; 632 633 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n", 634 prt_names(p->type, v4l2_type_names), 635 p->target, p->flags, 636 p->r.width, p->r.height, p->r.left, p->r.top); 637 } 638 639 static void v4l_print_jpegcompression(const void *arg, bool write_only) 640 { 641 const struct v4l2_jpegcompression *p = arg; 642 643 pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n", 644 p->quality, p->APPn, p->APP_len, 645 p->COM_len, p->jpeg_markers); 646 } 647 648 static void v4l_print_enc_idx(const void *arg, bool write_only) 649 { 650 const struct v4l2_enc_idx *p = arg; 651 652 pr_cont("entries=%d, entries_cap=%d\n", 653 p->entries, p->entries_cap); 654 } 655 656 static void v4l_print_encoder_cmd(const void *arg, bool write_only) 657 { 658 const struct v4l2_encoder_cmd *p = arg; 659 660 pr_cont("cmd=%d, flags=0x%x\n", 661 p->cmd, p->flags); 662 } 663 664 static void v4l_print_decoder_cmd(const void *arg, bool write_only) 665 { 666 const struct v4l2_decoder_cmd *p = arg; 667 668 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags); 669 670 if (p->cmd == V4L2_DEC_CMD_START) 671 pr_info("speed=%d, format=%u\n", 672 p->start.speed, p->start.format); 673 else if (p->cmd == V4L2_DEC_CMD_STOP) 674 pr_info("pts=%llu\n", p->stop.pts); 675 } 676 677 static void v4l_print_dbg_chip_info(const void *arg, bool write_only) 678 { 679 const struct v4l2_dbg_chip_info *p = arg; 680 681 pr_cont("type=%u, ", p->match.type); 682 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 683 pr_cont("name=%.*s, ", 684 (int)sizeof(p->match.name), p->match.name); 685 else 686 pr_cont("addr=%u, ", p->match.addr); 687 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name); 688 } 689 690 static void v4l_print_dbg_register(const void *arg, bool write_only) 691 { 692 const struct v4l2_dbg_register *p = arg; 693 694 pr_cont("type=%u, ", p->match.type); 695 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 696 pr_cont("name=%.*s, ", 697 (int)sizeof(p->match.name), p->match.name); 698 else 699 pr_cont("addr=%u, ", p->match.addr); 700 pr_cont("reg=0x%llx, val=0x%llx\n", 701 p->reg, p->val); 702 } 703 704 static void v4l_print_dv_timings(const void *arg, bool write_only) 705 { 706 const struct v4l2_dv_timings *p = arg; 707 708 switch (p->type) { 709 case V4L2_DV_BT_656_1120: 710 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", 711 p->bt.interlaced, p->bt.pixelclock, 712 p->bt.width, p->bt.height, 713 p->bt.polarities, p->bt.hfrontporch, 714 p->bt.hsync, p->bt.hbackporch, 715 p->bt.vfrontporch, p->bt.vsync, 716 p->bt.vbackporch, p->bt.il_vfrontporch, 717 p->bt.il_vsync, p->bt.il_vbackporch, 718 p->bt.standards, p->bt.flags); 719 break; 720 default: 721 pr_cont("type=%d\n", p->type); 722 break; 723 } 724 } 725 726 static void v4l_print_enum_dv_timings(const void *arg, bool write_only) 727 { 728 const struct v4l2_enum_dv_timings *p = arg; 729 730 pr_cont("index=%u, ", p->index); 731 v4l_print_dv_timings(&p->timings, write_only); 732 } 733 734 static void v4l_print_dv_timings_cap(const void *arg, bool write_only) 735 { 736 const struct v4l2_dv_timings_cap *p = arg; 737 738 switch (p->type) { 739 case V4L2_DV_BT_656_1120: 740 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n", 741 p->bt.min_width, p->bt.max_width, 742 p->bt.min_height, p->bt.max_height, 743 p->bt.min_pixelclock, p->bt.max_pixelclock, 744 p->bt.standards, p->bt.capabilities); 745 break; 746 default: 747 pr_cont("type=%u\n", p->type); 748 break; 749 } 750 } 751 752 static void v4l_print_frmsizeenum(const void *arg, bool write_only) 753 { 754 const struct v4l2_frmsizeenum *p = arg; 755 756 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u", 757 p->index, 758 (p->pixel_format & 0xff), 759 (p->pixel_format >> 8) & 0xff, 760 (p->pixel_format >> 16) & 0xff, 761 (p->pixel_format >> 24) & 0xff, 762 p->type); 763 switch (p->type) { 764 case V4L2_FRMSIZE_TYPE_DISCRETE: 765 pr_cont(", wxh=%ux%u\n", 766 p->discrete.width, p->discrete.height); 767 break; 768 case V4L2_FRMSIZE_TYPE_STEPWISE: 769 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n", 770 p->stepwise.min_width, 771 p->stepwise.min_height, 772 p->stepwise.max_width, 773 p->stepwise.max_height, 774 p->stepwise.step_width, 775 p->stepwise.step_height); 776 break; 777 case V4L2_FRMSIZE_TYPE_CONTINUOUS: 778 /* fall through */ 779 default: 780 pr_cont("\n"); 781 break; 782 } 783 } 784 785 static void v4l_print_frmivalenum(const void *arg, bool write_only) 786 { 787 const struct v4l2_frmivalenum *p = arg; 788 789 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u", 790 p->index, 791 (p->pixel_format & 0xff), 792 (p->pixel_format >> 8) & 0xff, 793 (p->pixel_format >> 16) & 0xff, 794 (p->pixel_format >> 24) & 0xff, 795 p->width, p->height, p->type); 796 switch (p->type) { 797 case V4L2_FRMIVAL_TYPE_DISCRETE: 798 pr_cont(", fps=%d/%d\n", 799 p->discrete.numerator, 800 p->discrete.denominator); 801 break; 802 case V4L2_FRMIVAL_TYPE_STEPWISE: 803 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n", 804 p->stepwise.min.numerator, 805 p->stepwise.min.denominator, 806 p->stepwise.max.numerator, 807 p->stepwise.max.denominator, 808 p->stepwise.step.numerator, 809 p->stepwise.step.denominator); 810 break; 811 case V4L2_FRMIVAL_TYPE_CONTINUOUS: 812 /* fall through */ 813 default: 814 pr_cont("\n"); 815 break; 816 } 817 } 818 819 static void v4l_print_event(const void *arg, bool write_only) 820 { 821 const struct v4l2_event *p = arg; 822 const struct v4l2_event_ctrl *c; 823 824 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%lu.%9.9lu\n", 825 p->type, p->pending, p->sequence, p->id, 826 p->timestamp.tv_sec, p->timestamp.tv_nsec); 827 switch (p->type) { 828 case V4L2_EVENT_VSYNC: 829 printk(KERN_DEBUG "field=%s\n", 830 prt_names(p->u.vsync.field, v4l2_field_names)); 831 break; 832 case V4L2_EVENT_CTRL: 833 c = &p->u.ctrl; 834 printk(KERN_DEBUG "changes=0x%x, type=%u, ", 835 c->changes, c->type); 836 if (c->type == V4L2_CTRL_TYPE_INTEGER64) 837 pr_cont("value64=%lld, ", c->value64); 838 else 839 pr_cont("value=%d, ", c->value); 840 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n", 841 c->flags, c->minimum, c->maximum, 842 c->step, c->default_value); 843 break; 844 case V4L2_EVENT_FRAME_SYNC: 845 pr_cont("frame_sequence=%u\n", 846 p->u.frame_sync.frame_sequence); 847 break; 848 } 849 } 850 851 static void v4l_print_event_subscription(const void *arg, bool write_only) 852 { 853 const struct v4l2_event_subscription *p = arg; 854 855 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n", 856 p->type, p->id, p->flags); 857 } 858 859 static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only) 860 { 861 const struct v4l2_sliced_vbi_cap *p = arg; 862 int i; 863 864 pr_cont("type=%s, service_set=0x%08x\n", 865 prt_names(p->type, v4l2_type_names), p->service_set); 866 for (i = 0; i < 24; i++) 867 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, 868 p->service_lines[0][i], 869 p->service_lines[1][i]); 870 } 871 872 static void v4l_print_freq_band(const void *arg, bool write_only) 873 { 874 const struct v4l2_frequency_band *p = arg; 875 876 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n", 877 p->tuner, p->type, p->index, 878 p->capability, p->rangelow, 879 p->rangehigh, p->modulation); 880 } 881 882 static void v4l_print_edid(const void *arg, bool write_only) 883 { 884 const struct v4l2_edid *p = arg; 885 886 pr_cont("pad=%u, start_block=%u, blocks=%u\n", 887 p->pad, p->start_block, p->blocks); 888 } 889 890 static void v4l_print_u32(const void *arg, bool write_only) 891 { 892 pr_cont("value=%u\n", *(const u32 *)arg); 893 } 894 895 static void v4l_print_newline(const void *arg, bool write_only) 896 { 897 pr_cont("\n"); 898 } 899 900 static void v4l_print_default(const void *arg, bool write_only) 901 { 902 pr_cont("driver-specific ioctl\n"); 903 } 904 905 static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) 906 { 907 __u32 i; 908 909 /* zero the reserved fields */ 910 c->reserved[0] = 0; 911 for (i = 0; i < c->count; i++) 912 c->controls[i].reserved2[0] = 0; 913 914 /* V4L2_CID_PRIVATE_BASE cannot be used as control class 915 when using extended controls. 916 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL 917 is it allowed for backwards compatibility. 918 */ 919 if (!allow_priv && c->which == V4L2_CID_PRIVATE_BASE) 920 return 0; 921 if (!c->which) 922 return 1; 923 /* Check that all controls are from the same control class. */ 924 for (i = 0; i < c->count; i++) { 925 if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) { 926 c->error_idx = i; 927 return 0; 928 } 929 } 930 return 1; 931 } 932 933 static int check_fmt(struct file *file, enum v4l2_buf_type type) 934 { 935 struct video_device *vfd = video_devdata(file); 936 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 937 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER; 938 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI; 939 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; 940 bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; 941 bool is_rx = vfd->vfl_dir != VFL_DIR_TX; 942 bool is_tx = vfd->vfl_dir != VFL_DIR_RX; 943 944 if (ops == NULL) 945 return -EINVAL; 946 947 switch (type) { 948 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 949 if ((is_vid || is_tch) && is_rx && 950 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane)) 951 return 0; 952 break; 953 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 954 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_cap_mplane) 955 return 0; 956 break; 957 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 958 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay) 959 return 0; 960 break; 961 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 962 if (is_vid && is_tx && 963 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane)) 964 return 0; 965 break; 966 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 967 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane) 968 return 0; 969 break; 970 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 971 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay) 972 return 0; 973 break; 974 case V4L2_BUF_TYPE_VBI_CAPTURE: 975 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap) 976 return 0; 977 break; 978 case V4L2_BUF_TYPE_VBI_OUTPUT: 979 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out) 980 return 0; 981 break; 982 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 983 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap) 984 return 0; 985 break; 986 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 987 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out) 988 return 0; 989 break; 990 case V4L2_BUF_TYPE_SDR_CAPTURE: 991 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap) 992 return 0; 993 break; 994 case V4L2_BUF_TYPE_SDR_OUTPUT: 995 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out) 996 return 0; 997 break; 998 case V4L2_BUF_TYPE_META_CAPTURE: 999 if (is_vid && is_rx && ops->vidioc_g_fmt_meta_cap) 1000 return 0; 1001 break; 1002 case V4L2_BUF_TYPE_META_OUTPUT: 1003 if (is_vid && is_tx && ops->vidioc_g_fmt_meta_out) 1004 return 0; 1005 break; 1006 default: 1007 break; 1008 } 1009 return -EINVAL; 1010 } 1011 1012 static void v4l_sanitize_format(struct v4l2_format *fmt) 1013 { 1014 unsigned int offset; 1015 1016 /* Make sure num_planes is not bogus */ 1017 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE || 1018 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 1019 fmt->fmt.pix_mp.num_planes = min_t(u32, fmt->fmt.pix_mp.num_planes, 1020 VIDEO_MAX_PLANES); 1021 1022 /* 1023 * The v4l2_pix_format structure has been extended with fields that were 1024 * not previously required to be set to zero by applications. The priv 1025 * field, when set to a magic value, indicates the the extended fields 1026 * are valid. Otherwise they will contain undefined values. To simplify 1027 * the API towards drivers zero the extended fields and set the priv 1028 * field to the magic value when the extended pixel format structure 1029 * isn't used by applications. 1030 */ 1031 1032 if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && 1033 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) 1034 return; 1035 1036 if (fmt->fmt.pix.priv == V4L2_PIX_FMT_PRIV_MAGIC) 1037 return; 1038 1039 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1040 1041 offset = offsetof(struct v4l2_pix_format, priv) 1042 + sizeof(fmt->fmt.pix.priv); 1043 memset(((void *)&fmt->fmt.pix) + offset, 0, 1044 sizeof(fmt->fmt.pix) - offset); 1045 } 1046 1047 static int v4l_querycap(const struct v4l2_ioctl_ops *ops, 1048 struct file *file, void *fh, void *arg) 1049 { 1050 struct v4l2_capability *cap = (struct v4l2_capability *)arg; 1051 struct video_device *vfd = video_devdata(file); 1052 int ret; 1053 1054 cap->version = LINUX_VERSION_CODE; 1055 cap->device_caps = vfd->device_caps; 1056 cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS; 1057 1058 ret = ops->vidioc_querycap(file, fh, cap); 1059 1060 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT; 1061 /* 1062 * Drivers MUST fill in device_caps, so check for this and 1063 * warn if it was forgotten. 1064 */ 1065 WARN(!(cap->capabilities & V4L2_CAP_DEVICE_CAPS) || 1066 !cap->device_caps, "Bad caps for driver %s, %x %x", 1067 cap->driver, cap->capabilities, cap->device_caps); 1068 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT; 1069 1070 return ret; 1071 } 1072 1073 static int v4l_s_input(const struct v4l2_ioctl_ops *ops, 1074 struct file *file, void *fh, void *arg) 1075 { 1076 struct video_device *vfd = video_devdata(file); 1077 int ret; 1078 1079 ret = v4l_enable_media_source(vfd); 1080 if (ret) 1081 return ret; 1082 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg); 1083 } 1084 1085 static int v4l_s_output(const struct v4l2_ioctl_ops *ops, 1086 struct file *file, void *fh, void *arg) 1087 { 1088 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg); 1089 } 1090 1091 static int v4l_g_priority(const struct v4l2_ioctl_ops *ops, 1092 struct file *file, void *fh, void *arg) 1093 { 1094 struct video_device *vfd; 1095 u32 *p = arg; 1096 1097 vfd = video_devdata(file); 1098 *p = v4l2_prio_max(vfd->prio); 1099 return 0; 1100 } 1101 1102 static int v4l_s_priority(const struct v4l2_ioctl_ops *ops, 1103 struct file *file, void *fh, void *arg) 1104 { 1105 struct video_device *vfd; 1106 struct v4l2_fh *vfh; 1107 u32 *p = arg; 1108 1109 vfd = video_devdata(file); 1110 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 1111 return -ENOTTY; 1112 vfh = file->private_data; 1113 return v4l2_prio_change(vfd->prio, &vfh->prio, *p); 1114 } 1115 1116 static int v4l_enuminput(const struct v4l2_ioctl_ops *ops, 1117 struct file *file, void *fh, void *arg) 1118 { 1119 struct video_device *vfd = video_devdata(file); 1120 struct v4l2_input *p = arg; 1121 1122 /* 1123 * We set the flags for CAP_DV_TIMINGS & 1124 * CAP_STD here based on ioctl handler provided by the 1125 * driver. If the driver doesn't support these 1126 * for a specific input, it must override these flags. 1127 */ 1128 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1129 p->capabilities |= V4L2_IN_CAP_STD; 1130 1131 return ops->vidioc_enum_input(file, fh, p); 1132 } 1133 1134 static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops, 1135 struct file *file, void *fh, void *arg) 1136 { 1137 struct video_device *vfd = video_devdata(file); 1138 struct v4l2_output *p = arg; 1139 1140 /* 1141 * We set the flags for CAP_DV_TIMINGS & 1142 * CAP_STD here based on ioctl handler provided by the 1143 * driver. If the driver doesn't support these 1144 * for a specific output, it must override these flags. 1145 */ 1146 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1147 p->capabilities |= V4L2_OUT_CAP_STD; 1148 1149 return ops->vidioc_enum_output(file, fh, p); 1150 } 1151 1152 static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) 1153 { 1154 const unsigned sz = sizeof(fmt->description); 1155 const char *descr = NULL; 1156 u32 flags = 0; 1157 1158 /* 1159 * We depart from the normal coding style here since the descriptions 1160 * should be aligned so it is easy to see which descriptions will be 1161 * longer than 31 characters (the max length for a description). 1162 * And frankly, this is easier to read anyway. 1163 * 1164 * Note that gcc will use O(log N) comparisons to find the right case. 1165 */ 1166 switch (fmt->pixelformat) { 1167 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1168 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break; 1169 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break; 1170 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break; 1171 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break; 1172 case V4L2_PIX_FMT_RGBA444: descr = "16-bit RGBA 4-4-4-4"; break; 1173 case V4L2_PIX_FMT_RGBX444: descr = "16-bit RGBX 4-4-4-4"; break; 1174 case V4L2_PIX_FMT_ABGR444: descr = "16-bit ABGR 4-4-4-4"; break; 1175 case V4L2_PIX_FMT_XBGR444: descr = "16-bit XBGR 4-4-4-4"; break; 1176 case V4L2_PIX_FMT_BGRA444: descr = "16-bit BGRA 4-4-4-4"; break; 1177 case V4L2_PIX_FMT_BGRX444: descr = "16-bit BGRX 4-4-4-4"; break; 1178 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break; 1179 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break; 1180 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break; 1181 case V4L2_PIX_FMT_ABGR555: descr = "16-bit ABGR 1-5-5-5"; break; 1182 case V4L2_PIX_FMT_XBGR555: descr = "16-bit XBGR 1-5-5-5"; break; 1183 case V4L2_PIX_FMT_RGBA555: descr = "16-bit RGBA 5-5-5-1"; break; 1184 case V4L2_PIX_FMT_RGBX555: descr = "16-bit RGBX 5-5-5-1"; break; 1185 case V4L2_PIX_FMT_BGRA555: descr = "16-bit BGRA 5-5-5-1"; break; 1186 case V4L2_PIX_FMT_BGRX555: descr = "16-bit BGRX 5-5-5-1"; break; 1187 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break; 1188 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break; 1189 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break; 1190 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break; 1191 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break; 1192 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break; 1193 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break; 1194 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break; 1195 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break; 1196 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break; 1197 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break; 1198 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break; 1199 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break; 1200 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break; 1201 case V4L2_PIX_FMT_BGRA32: descr = "32-bit ABGR 8-8-8-8"; break; 1202 case V4L2_PIX_FMT_BGRX32: descr = "32-bit XBGR 8-8-8-8"; break; 1203 case V4L2_PIX_FMT_RGBA32: descr = "32-bit RGBA 8-8-8-8"; break; 1204 case V4L2_PIX_FMT_RGBX32: descr = "32-bit RGBX 8-8-8-8"; break; 1205 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break; 1206 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break; 1207 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break; 1208 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break; 1209 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break; 1210 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break; 1211 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break; 1212 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break; 1213 case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break; 1214 case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break; 1215 case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break; 1216 case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break; 1217 case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break; 1218 case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break; 1219 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break; 1220 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break; 1221 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break; 1222 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break; 1223 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break; 1224 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break; 1225 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break; 1226 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break; 1227 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break; 1228 case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break; 1229 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break; 1230 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break; 1231 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break; 1232 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break; 1233 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break; 1234 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break; 1235 case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break; 1236 case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break; 1237 case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break; 1238 case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break; 1239 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break; 1240 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break; 1241 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break; 1242 case V4L2_PIX_FMT_HM12: descr = "YUV 4:2:0 (16x16 Macroblocks)"; break; 1243 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break; 1244 case V4L2_PIX_FMT_NV12: descr = "Y/CbCr 4:2:0"; break; 1245 case V4L2_PIX_FMT_NV21: descr = "Y/CrCb 4:2:0"; break; 1246 case V4L2_PIX_FMT_NV16: descr = "Y/CbCr 4:2:2"; break; 1247 case V4L2_PIX_FMT_NV61: descr = "Y/CrCb 4:2:2"; break; 1248 case V4L2_PIX_FMT_NV24: descr = "Y/CbCr 4:4:4"; break; 1249 case V4L2_PIX_FMT_NV42: descr = "Y/CrCb 4:4:4"; break; 1250 case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break; 1251 case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break; 1252 case V4L2_PIX_FMT_NV16M: descr = "Y/CbCr 4:2:2 (N-C)"; break; 1253 case V4L2_PIX_FMT_NV61M: descr = "Y/CrCb 4:2:2 (N-C)"; break; 1254 case V4L2_PIX_FMT_NV12MT: descr = "Y/CbCr 4:2:0 (64x32 MB, N-C)"; break; 1255 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/CbCr 4:2:0 (16x16 MB, N-C)"; break; 1256 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break; 1257 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break; 1258 case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break; 1259 case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break; 1260 case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break; 1261 case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break; 1262 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break; 1263 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break; 1264 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break; 1265 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break; 1266 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break; 1267 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break; 1268 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break; 1269 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break; 1270 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break; 1271 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break; 1272 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break; 1273 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break; 1274 case V4L2_PIX_FMT_IPU3_SBGGR10: descr = "10-bit bayer BGGR IPU3 Packed"; break; 1275 case V4L2_PIX_FMT_IPU3_SGBRG10: descr = "10-bit bayer GBRG IPU3 Packed"; break; 1276 case V4L2_PIX_FMT_IPU3_SGRBG10: descr = "10-bit bayer GRBG IPU3 Packed"; break; 1277 case V4L2_PIX_FMT_IPU3_SRGGB10: descr = "10-bit bayer RGGB IPU3 Packed"; break; 1278 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break; 1279 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break; 1280 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break; 1281 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break; 1282 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break; 1283 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break; 1284 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break; 1285 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break; 1286 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break; 1287 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break; 1288 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break; 1289 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break; 1290 case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break; 1291 case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break; 1292 case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break; 1293 case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break; 1294 case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break; 1295 case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break; 1296 case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break; 1297 case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break; 1298 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break; 1299 case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break; 1300 case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break; 1301 case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break; 1302 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break; 1303 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break; 1304 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break; 1305 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break; 1306 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break; 1307 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break; 1308 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break; 1309 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break; 1310 case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break; 1311 case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break; 1312 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break; 1313 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break; 1314 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break; 1315 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break; 1316 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break; 1317 case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break; 1318 case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break; 1319 case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break; 1320 case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit Signed Deltas"; break; 1321 case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit Signed Deltas"; break; 1322 case V4L2_TCH_FMT_TU16: descr = "16-bit Unsigned Touch Data"; break; 1323 case V4L2_TCH_FMT_TU08: descr = "8-bit Unsigned Touch Data"; break; 1324 case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break; 1325 case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break; 1326 case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break; 1327 case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break; 1328 1329 default: 1330 /* Compressed formats */ 1331 flags = V4L2_FMT_FLAG_COMPRESSED; 1332 switch (fmt->pixelformat) { 1333 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1334 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break; 1335 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break; 1336 case V4L2_PIX_FMT_DV: descr = "1394"; break; 1337 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break; 1338 case V4L2_PIX_FMT_H264: descr = "H.264"; break; 1339 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break; 1340 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break; 1341 case V4L2_PIX_FMT_H264_SLICE_RAW: descr = "H.264 Parsed Slice Data"; break; 1342 case V4L2_PIX_FMT_H263: descr = "H.263"; break; 1343 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break; 1344 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break; 1345 case V4L2_PIX_FMT_MPEG2_SLICE: descr = "MPEG-2 Parsed Slice Data"; break; 1346 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 Part 2 ES"; break; 1347 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break; 1348 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break; 1349 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break; 1350 case V4L2_PIX_FMT_VP8: descr = "VP8"; break; 1351 case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break; 1352 case V4L2_PIX_FMT_VP9: descr = "VP9"; break; 1353 case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */ 1354 case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */ 1355 case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */ 1356 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break; 1357 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break; 1358 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break; 1359 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break; 1360 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break; 1361 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break; 1362 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break; 1363 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break; 1364 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break; 1365 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break; 1366 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break; 1367 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break; 1368 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break; 1369 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break; 1370 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break; 1371 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break; 1372 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break; 1373 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break; 1374 case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break; 1375 case V4L2_PIX_FMT_SUNXI_TILED_NV12: descr = "Sunxi Tiled NV12 Format"; break; 1376 default: 1377 if (fmt->description[0]) 1378 return; 1379 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat); 1380 flags = 0; 1381 snprintf(fmt->description, sz, "%c%c%c%c%s", 1382 (char)(fmt->pixelformat & 0x7f), 1383 (char)((fmt->pixelformat >> 8) & 0x7f), 1384 (char)((fmt->pixelformat >> 16) & 0x7f), 1385 (char)((fmt->pixelformat >> 24) & 0x7f), 1386 (fmt->pixelformat & (1 << 31)) ? "-BE" : ""); 1387 break; 1388 } 1389 } 1390 1391 if (descr) 1392 WARN_ON(strscpy(fmt->description, descr, sz) < 0); 1393 fmt->flags = flags; 1394 } 1395 1396 static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops, 1397 struct file *file, void *fh, void *arg) 1398 { 1399 struct video_device *vdev = video_devdata(file); 1400 struct v4l2_fmtdesc *p = arg; 1401 int ret = check_fmt(file, p->type); 1402 u32 cap_mask; 1403 1404 if (ret) 1405 return ret; 1406 ret = -EINVAL; 1407 1408 switch (p->type) { 1409 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1410 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1411 cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE | 1412 V4L2_CAP_VIDEO_M2M_MPLANE; 1413 if (!!(vdev->device_caps & cap_mask) != 1414 (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) 1415 break; 1416 1417 if (unlikely(!ops->vidioc_enum_fmt_vid_cap)) 1418 break; 1419 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg); 1420 break; 1421 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1422 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay)) 1423 break; 1424 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg); 1425 break; 1426 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1427 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1428 cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE | 1429 V4L2_CAP_VIDEO_M2M_MPLANE; 1430 if (!!(vdev->device_caps & cap_mask) != 1431 (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)) 1432 break; 1433 1434 if (unlikely(!ops->vidioc_enum_fmt_vid_out)) 1435 break; 1436 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg); 1437 break; 1438 case V4L2_BUF_TYPE_SDR_CAPTURE: 1439 if (unlikely(!ops->vidioc_enum_fmt_sdr_cap)) 1440 break; 1441 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg); 1442 break; 1443 case V4L2_BUF_TYPE_SDR_OUTPUT: 1444 if (unlikely(!ops->vidioc_enum_fmt_sdr_out)) 1445 break; 1446 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg); 1447 break; 1448 case V4L2_BUF_TYPE_META_CAPTURE: 1449 if (unlikely(!ops->vidioc_enum_fmt_meta_cap)) 1450 break; 1451 ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg); 1452 break; 1453 case V4L2_BUF_TYPE_META_OUTPUT: 1454 if (unlikely(!ops->vidioc_enum_fmt_meta_out)) 1455 break; 1456 ret = ops->vidioc_enum_fmt_meta_out(file, fh, arg); 1457 break; 1458 } 1459 if (ret == 0) 1460 v4l_fill_fmtdesc(p); 1461 return ret; 1462 } 1463 1464 static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, 1465 struct file *file, void *fh, void *arg) 1466 { 1467 struct v4l2_format *p = arg; 1468 int ret = check_fmt(file, p->type); 1469 1470 if (ret) 1471 return ret; 1472 1473 /* 1474 * fmt can't be cleared for these overlay types due to the 'clips' 1475 * 'clipcount' and 'bitmap' pointers in struct v4l2_window. 1476 * Those are provided by the user. So handle these two overlay types 1477 * first, and then just do a simple memset for the other types. 1478 */ 1479 switch (p->type) { 1480 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1481 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: { 1482 struct v4l2_clip __user *clips = p->fmt.win.clips; 1483 u32 clipcount = p->fmt.win.clipcount; 1484 void __user *bitmap = p->fmt.win.bitmap; 1485 1486 memset(&p->fmt, 0, sizeof(p->fmt)); 1487 p->fmt.win.clips = clips; 1488 p->fmt.win.clipcount = clipcount; 1489 p->fmt.win.bitmap = bitmap; 1490 break; 1491 } 1492 default: 1493 memset(&p->fmt, 0, sizeof(p->fmt)); 1494 break; 1495 } 1496 1497 switch (p->type) { 1498 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1499 if (unlikely(!ops->vidioc_g_fmt_vid_cap)) 1500 break; 1501 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1502 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg); 1503 /* just in case the driver zeroed it again */ 1504 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1505 return ret; 1506 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1507 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg); 1508 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1509 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg); 1510 case V4L2_BUF_TYPE_VBI_CAPTURE: 1511 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg); 1512 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1513 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg); 1514 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1515 if (unlikely(!ops->vidioc_g_fmt_vid_out)) 1516 break; 1517 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1518 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg); 1519 /* just in case the driver zeroed it again */ 1520 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1521 return ret; 1522 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1523 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg); 1524 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1525 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg); 1526 case V4L2_BUF_TYPE_VBI_OUTPUT: 1527 return ops->vidioc_g_fmt_vbi_out(file, fh, arg); 1528 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1529 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg); 1530 case V4L2_BUF_TYPE_SDR_CAPTURE: 1531 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg); 1532 case V4L2_BUF_TYPE_SDR_OUTPUT: 1533 return ops->vidioc_g_fmt_sdr_out(file, fh, arg); 1534 case V4L2_BUF_TYPE_META_CAPTURE: 1535 return ops->vidioc_g_fmt_meta_cap(file, fh, arg); 1536 case V4L2_BUF_TYPE_META_OUTPUT: 1537 return ops->vidioc_g_fmt_meta_out(file, fh, arg); 1538 } 1539 return -EINVAL; 1540 } 1541 1542 static void v4l_pix_format_touch(struct v4l2_pix_format *p) 1543 { 1544 /* 1545 * The v4l2_pix_format structure contains fields that make no sense for 1546 * touch. Set them to default values in this case. 1547 */ 1548 1549 p->field = V4L2_FIELD_NONE; 1550 p->colorspace = V4L2_COLORSPACE_RAW; 1551 p->flags = 0; 1552 p->ycbcr_enc = 0; 1553 p->quantization = 0; 1554 p->xfer_func = 0; 1555 } 1556 1557 static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, 1558 struct file *file, void *fh, void *arg) 1559 { 1560 struct v4l2_format *p = arg; 1561 struct video_device *vfd = video_devdata(file); 1562 int ret = check_fmt(file, p->type); 1563 unsigned int i; 1564 1565 if (ret) 1566 return ret; 1567 1568 ret = v4l_enable_media_source(vfd); 1569 if (ret) 1570 return ret; 1571 v4l_sanitize_format(p); 1572 1573 switch (p->type) { 1574 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1575 if (unlikely(!ops->vidioc_s_fmt_vid_cap)) 1576 break; 1577 CLEAR_AFTER_FIELD(p, fmt.pix); 1578 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg); 1579 /* just in case the driver zeroed it again */ 1580 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1581 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1582 v4l_pix_format_touch(&p->fmt.pix); 1583 return ret; 1584 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1585 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane)) 1586 break; 1587 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1588 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1589 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1590 bytesperline); 1591 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg); 1592 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1593 if (unlikely(!ops->vidioc_s_fmt_vid_overlay)) 1594 break; 1595 CLEAR_AFTER_FIELD(p, fmt.win); 1596 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg); 1597 case V4L2_BUF_TYPE_VBI_CAPTURE: 1598 if (unlikely(!ops->vidioc_s_fmt_vbi_cap)) 1599 break; 1600 CLEAR_AFTER_FIELD(p, fmt.vbi); 1601 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg); 1602 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1603 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap)) 1604 break; 1605 CLEAR_AFTER_FIELD(p, fmt.sliced); 1606 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg); 1607 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1608 if (unlikely(!ops->vidioc_s_fmt_vid_out)) 1609 break; 1610 CLEAR_AFTER_FIELD(p, fmt.pix); 1611 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg); 1612 /* just in case the driver zeroed it again */ 1613 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1614 return ret; 1615 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1616 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane)) 1617 break; 1618 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1619 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1620 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1621 bytesperline); 1622 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg); 1623 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1624 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay)) 1625 break; 1626 CLEAR_AFTER_FIELD(p, fmt.win); 1627 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg); 1628 case V4L2_BUF_TYPE_VBI_OUTPUT: 1629 if (unlikely(!ops->vidioc_s_fmt_vbi_out)) 1630 break; 1631 CLEAR_AFTER_FIELD(p, fmt.vbi); 1632 return ops->vidioc_s_fmt_vbi_out(file, fh, arg); 1633 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1634 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out)) 1635 break; 1636 CLEAR_AFTER_FIELD(p, fmt.sliced); 1637 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg); 1638 case V4L2_BUF_TYPE_SDR_CAPTURE: 1639 if (unlikely(!ops->vidioc_s_fmt_sdr_cap)) 1640 break; 1641 CLEAR_AFTER_FIELD(p, fmt.sdr); 1642 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg); 1643 case V4L2_BUF_TYPE_SDR_OUTPUT: 1644 if (unlikely(!ops->vidioc_s_fmt_sdr_out)) 1645 break; 1646 CLEAR_AFTER_FIELD(p, fmt.sdr); 1647 return ops->vidioc_s_fmt_sdr_out(file, fh, arg); 1648 case V4L2_BUF_TYPE_META_CAPTURE: 1649 if (unlikely(!ops->vidioc_s_fmt_meta_cap)) 1650 break; 1651 CLEAR_AFTER_FIELD(p, fmt.meta); 1652 return ops->vidioc_s_fmt_meta_cap(file, fh, arg); 1653 case V4L2_BUF_TYPE_META_OUTPUT: 1654 if (unlikely(!ops->vidioc_s_fmt_meta_out)) 1655 break; 1656 CLEAR_AFTER_FIELD(p, fmt.meta); 1657 return ops->vidioc_s_fmt_meta_out(file, fh, arg); 1658 } 1659 return -EINVAL; 1660 } 1661 1662 static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, 1663 struct file *file, void *fh, void *arg) 1664 { 1665 struct v4l2_format *p = arg; 1666 struct video_device *vfd = video_devdata(file); 1667 int ret = check_fmt(file, p->type); 1668 unsigned int i; 1669 1670 if (ret) 1671 return ret; 1672 1673 v4l_sanitize_format(p); 1674 1675 switch (p->type) { 1676 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1677 if (unlikely(!ops->vidioc_try_fmt_vid_cap)) 1678 break; 1679 CLEAR_AFTER_FIELD(p, fmt.pix); 1680 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg); 1681 /* just in case the driver zeroed it again */ 1682 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1683 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1684 v4l_pix_format_touch(&p->fmt.pix); 1685 return ret; 1686 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1687 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane)) 1688 break; 1689 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1690 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1691 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1692 bytesperline); 1693 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg); 1694 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1695 if (unlikely(!ops->vidioc_try_fmt_vid_overlay)) 1696 break; 1697 CLEAR_AFTER_FIELD(p, fmt.win); 1698 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg); 1699 case V4L2_BUF_TYPE_VBI_CAPTURE: 1700 if (unlikely(!ops->vidioc_try_fmt_vbi_cap)) 1701 break; 1702 CLEAR_AFTER_FIELD(p, fmt.vbi); 1703 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg); 1704 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1705 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap)) 1706 break; 1707 CLEAR_AFTER_FIELD(p, fmt.sliced); 1708 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg); 1709 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1710 if (unlikely(!ops->vidioc_try_fmt_vid_out)) 1711 break; 1712 CLEAR_AFTER_FIELD(p, fmt.pix); 1713 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg); 1714 /* just in case the driver zeroed it again */ 1715 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1716 return ret; 1717 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1718 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane)) 1719 break; 1720 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1721 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1722 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1723 bytesperline); 1724 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg); 1725 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1726 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay)) 1727 break; 1728 CLEAR_AFTER_FIELD(p, fmt.win); 1729 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg); 1730 case V4L2_BUF_TYPE_VBI_OUTPUT: 1731 if (unlikely(!ops->vidioc_try_fmt_vbi_out)) 1732 break; 1733 CLEAR_AFTER_FIELD(p, fmt.vbi); 1734 return ops->vidioc_try_fmt_vbi_out(file, fh, arg); 1735 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1736 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out)) 1737 break; 1738 CLEAR_AFTER_FIELD(p, fmt.sliced); 1739 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg); 1740 case V4L2_BUF_TYPE_SDR_CAPTURE: 1741 if (unlikely(!ops->vidioc_try_fmt_sdr_cap)) 1742 break; 1743 CLEAR_AFTER_FIELD(p, fmt.sdr); 1744 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg); 1745 case V4L2_BUF_TYPE_SDR_OUTPUT: 1746 if (unlikely(!ops->vidioc_try_fmt_sdr_out)) 1747 break; 1748 CLEAR_AFTER_FIELD(p, fmt.sdr); 1749 return ops->vidioc_try_fmt_sdr_out(file, fh, arg); 1750 case V4L2_BUF_TYPE_META_CAPTURE: 1751 if (unlikely(!ops->vidioc_try_fmt_meta_cap)) 1752 break; 1753 CLEAR_AFTER_FIELD(p, fmt.meta); 1754 return ops->vidioc_try_fmt_meta_cap(file, fh, arg); 1755 case V4L2_BUF_TYPE_META_OUTPUT: 1756 if (unlikely(!ops->vidioc_try_fmt_meta_out)) 1757 break; 1758 CLEAR_AFTER_FIELD(p, fmt.meta); 1759 return ops->vidioc_try_fmt_meta_out(file, fh, arg); 1760 } 1761 return -EINVAL; 1762 } 1763 1764 static int v4l_streamon(const struct v4l2_ioctl_ops *ops, 1765 struct file *file, void *fh, void *arg) 1766 { 1767 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg); 1768 } 1769 1770 static int v4l_streamoff(const struct v4l2_ioctl_ops *ops, 1771 struct file *file, void *fh, void *arg) 1772 { 1773 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg); 1774 } 1775 1776 static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops, 1777 struct file *file, void *fh, void *arg) 1778 { 1779 struct video_device *vfd = video_devdata(file); 1780 struct v4l2_tuner *p = arg; 1781 int err; 1782 1783 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1784 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1785 err = ops->vidioc_g_tuner(file, fh, p); 1786 if (!err) 1787 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1788 return err; 1789 } 1790 1791 static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops, 1792 struct file *file, void *fh, void *arg) 1793 { 1794 struct video_device *vfd = video_devdata(file); 1795 struct v4l2_tuner *p = arg; 1796 int ret; 1797 1798 ret = v4l_enable_media_source(vfd); 1799 if (ret) 1800 return ret; 1801 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1802 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1803 return ops->vidioc_s_tuner(file, fh, p); 1804 } 1805 1806 static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops, 1807 struct file *file, void *fh, void *arg) 1808 { 1809 struct video_device *vfd = video_devdata(file); 1810 struct v4l2_modulator *p = arg; 1811 int err; 1812 1813 if (vfd->vfl_type == VFL_TYPE_RADIO) 1814 p->type = V4L2_TUNER_RADIO; 1815 1816 err = ops->vidioc_g_modulator(file, fh, p); 1817 if (!err) 1818 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1819 return err; 1820 } 1821 1822 static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops, 1823 struct file *file, void *fh, void *arg) 1824 { 1825 struct video_device *vfd = video_devdata(file); 1826 struct v4l2_modulator *p = arg; 1827 1828 if (vfd->vfl_type == VFL_TYPE_RADIO) 1829 p->type = V4L2_TUNER_RADIO; 1830 1831 return ops->vidioc_s_modulator(file, fh, p); 1832 } 1833 1834 static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops, 1835 struct file *file, void *fh, void *arg) 1836 { 1837 struct video_device *vfd = video_devdata(file); 1838 struct v4l2_frequency *p = arg; 1839 1840 if (vfd->vfl_type == VFL_TYPE_SDR) 1841 p->type = V4L2_TUNER_SDR; 1842 else 1843 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1844 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1845 return ops->vidioc_g_frequency(file, fh, p); 1846 } 1847 1848 static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops, 1849 struct file *file, void *fh, void *arg) 1850 { 1851 struct video_device *vfd = video_devdata(file); 1852 const struct v4l2_frequency *p = arg; 1853 enum v4l2_tuner_type type; 1854 int ret; 1855 1856 ret = v4l_enable_media_source(vfd); 1857 if (ret) 1858 return ret; 1859 if (vfd->vfl_type == VFL_TYPE_SDR) { 1860 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 1861 return -EINVAL; 1862 } else { 1863 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1864 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1865 if (type != p->type) 1866 return -EINVAL; 1867 } 1868 return ops->vidioc_s_frequency(file, fh, p); 1869 } 1870 1871 static int v4l_enumstd(const struct v4l2_ioctl_ops *ops, 1872 struct file *file, void *fh, void *arg) 1873 { 1874 struct video_device *vfd = video_devdata(file); 1875 struct v4l2_standard *p = arg; 1876 1877 return v4l_video_std_enumstd(p, vfd->tvnorms); 1878 } 1879 1880 static int v4l_s_std(const struct v4l2_ioctl_ops *ops, 1881 struct file *file, void *fh, void *arg) 1882 { 1883 struct video_device *vfd = video_devdata(file); 1884 v4l2_std_id id = *(v4l2_std_id *)arg, norm; 1885 int ret; 1886 1887 ret = v4l_enable_media_source(vfd); 1888 if (ret) 1889 return ret; 1890 norm = id & vfd->tvnorms; 1891 if (vfd->tvnorms && !norm) /* Check if std is supported */ 1892 return -EINVAL; 1893 1894 /* Calls the specific handler */ 1895 return ops->vidioc_s_std(file, fh, norm); 1896 } 1897 1898 static int v4l_querystd(const struct v4l2_ioctl_ops *ops, 1899 struct file *file, void *fh, void *arg) 1900 { 1901 struct video_device *vfd = video_devdata(file); 1902 v4l2_std_id *p = arg; 1903 int ret; 1904 1905 ret = v4l_enable_media_source(vfd); 1906 if (ret) 1907 return ret; 1908 /* 1909 * If no signal is detected, then the driver should return 1910 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with 1911 * any standards that do not apply removed. 1912 * 1913 * This means that tuners, audio and video decoders can join 1914 * their efforts to improve the standards detection. 1915 */ 1916 *p = vfd->tvnorms; 1917 return ops->vidioc_querystd(file, fh, arg); 1918 } 1919 1920 static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops, 1921 struct file *file, void *fh, void *arg) 1922 { 1923 struct video_device *vfd = video_devdata(file); 1924 struct v4l2_hw_freq_seek *p = arg; 1925 enum v4l2_tuner_type type; 1926 int ret; 1927 1928 ret = v4l_enable_media_source(vfd); 1929 if (ret) 1930 return ret; 1931 /* s_hw_freq_seek is not supported for SDR for now */ 1932 if (vfd->vfl_type == VFL_TYPE_SDR) 1933 return -EINVAL; 1934 1935 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1936 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1937 if (p->type != type) 1938 return -EINVAL; 1939 return ops->vidioc_s_hw_freq_seek(file, fh, p); 1940 } 1941 1942 static int v4l_overlay(const struct v4l2_ioctl_ops *ops, 1943 struct file *file, void *fh, void *arg) 1944 { 1945 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg); 1946 } 1947 1948 static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops, 1949 struct file *file, void *fh, void *arg) 1950 { 1951 struct v4l2_requestbuffers *p = arg; 1952 int ret = check_fmt(file, p->type); 1953 1954 if (ret) 1955 return ret; 1956 1957 CLEAR_AFTER_FIELD(p, capabilities); 1958 1959 return ops->vidioc_reqbufs(file, fh, p); 1960 } 1961 1962 static int v4l_querybuf(const struct v4l2_ioctl_ops *ops, 1963 struct file *file, void *fh, void *arg) 1964 { 1965 struct v4l2_buffer *p = arg; 1966 int ret = check_fmt(file, p->type); 1967 1968 return ret ? ret : ops->vidioc_querybuf(file, fh, p); 1969 } 1970 1971 static int v4l_qbuf(const struct v4l2_ioctl_ops *ops, 1972 struct file *file, void *fh, void *arg) 1973 { 1974 struct v4l2_buffer *p = arg; 1975 int ret = check_fmt(file, p->type); 1976 1977 return ret ? ret : ops->vidioc_qbuf(file, fh, p); 1978 } 1979 1980 static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops, 1981 struct file *file, void *fh, void *arg) 1982 { 1983 struct v4l2_buffer *p = arg; 1984 int ret = check_fmt(file, p->type); 1985 1986 return ret ? ret : ops->vidioc_dqbuf(file, fh, p); 1987 } 1988 1989 static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops, 1990 struct file *file, void *fh, void *arg) 1991 { 1992 struct v4l2_create_buffers *create = arg; 1993 int ret = check_fmt(file, create->format.type); 1994 1995 if (ret) 1996 return ret; 1997 1998 CLEAR_AFTER_FIELD(create, capabilities); 1999 2000 v4l_sanitize_format(&create->format); 2001 2002 ret = ops->vidioc_create_bufs(file, fh, create); 2003 2004 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 2005 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT) 2006 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 2007 2008 return ret; 2009 } 2010 2011 static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops, 2012 struct file *file, void *fh, void *arg) 2013 { 2014 struct v4l2_buffer *b = arg; 2015 int ret = check_fmt(file, b->type); 2016 2017 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b); 2018 } 2019 2020 static int v4l_g_parm(const struct v4l2_ioctl_ops *ops, 2021 struct file *file, void *fh, void *arg) 2022 { 2023 struct v4l2_streamparm *p = arg; 2024 v4l2_std_id std; 2025 int ret = check_fmt(file, p->type); 2026 2027 if (ret) 2028 return ret; 2029 if (ops->vidioc_g_parm) 2030 return ops->vidioc_g_parm(file, fh, p); 2031 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && 2032 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2033 return -EINVAL; 2034 p->parm.capture.readbuffers = 2; 2035 ret = ops->vidioc_g_std(file, fh, &std); 2036 if (ret == 0) 2037 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe); 2038 return ret; 2039 } 2040 2041 static int v4l_s_parm(const struct v4l2_ioctl_ops *ops, 2042 struct file *file, void *fh, void *arg) 2043 { 2044 struct v4l2_streamparm *p = arg; 2045 int ret = check_fmt(file, p->type); 2046 2047 if (ret) 2048 return ret; 2049 2050 /* Note: extendedmode is never used in drivers */ 2051 if (V4L2_TYPE_IS_OUTPUT(p->type)) { 2052 memset(p->parm.output.reserved, 0, 2053 sizeof(p->parm.output.reserved)); 2054 p->parm.output.extendedmode = 0; 2055 p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY; 2056 } else { 2057 memset(p->parm.capture.reserved, 0, 2058 sizeof(p->parm.capture.reserved)); 2059 p->parm.capture.extendedmode = 0; 2060 p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY; 2061 } 2062 return ops->vidioc_s_parm(file, fh, p); 2063 } 2064 2065 static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops, 2066 struct file *file, void *fh, void *arg) 2067 { 2068 struct video_device *vfd = video_devdata(file); 2069 struct v4l2_queryctrl *p = arg; 2070 struct v4l2_fh *vfh = 2071 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2072 2073 if (vfh && vfh->ctrl_handler) 2074 return v4l2_queryctrl(vfh->ctrl_handler, p); 2075 if (vfd->ctrl_handler) 2076 return v4l2_queryctrl(vfd->ctrl_handler, p); 2077 if (ops->vidioc_queryctrl) 2078 return ops->vidioc_queryctrl(file, fh, p); 2079 return -ENOTTY; 2080 } 2081 2082 static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops, 2083 struct file *file, void *fh, void *arg) 2084 { 2085 struct video_device *vfd = video_devdata(file); 2086 struct v4l2_query_ext_ctrl *p = arg; 2087 struct v4l2_fh *vfh = 2088 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2089 2090 if (vfh && vfh->ctrl_handler) 2091 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p); 2092 if (vfd->ctrl_handler) 2093 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p); 2094 if (ops->vidioc_query_ext_ctrl) 2095 return ops->vidioc_query_ext_ctrl(file, fh, p); 2096 return -ENOTTY; 2097 } 2098 2099 static int v4l_querymenu(const struct v4l2_ioctl_ops *ops, 2100 struct file *file, void *fh, void *arg) 2101 { 2102 struct video_device *vfd = video_devdata(file); 2103 struct v4l2_querymenu *p = arg; 2104 struct v4l2_fh *vfh = 2105 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2106 2107 if (vfh && vfh->ctrl_handler) 2108 return v4l2_querymenu(vfh->ctrl_handler, p); 2109 if (vfd->ctrl_handler) 2110 return v4l2_querymenu(vfd->ctrl_handler, p); 2111 if (ops->vidioc_querymenu) 2112 return ops->vidioc_querymenu(file, fh, p); 2113 return -ENOTTY; 2114 } 2115 2116 static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops, 2117 struct file *file, void *fh, void *arg) 2118 { 2119 struct video_device *vfd = video_devdata(file); 2120 struct v4l2_control *p = arg; 2121 struct v4l2_fh *vfh = 2122 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2123 struct v4l2_ext_controls ctrls; 2124 struct v4l2_ext_control ctrl; 2125 2126 if (vfh && vfh->ctrl_handler) 2127 return v4l2_g_ctrl(vfh->ctrl_handler, p); 2128 if (vfd->ctrl_handler) 2129 return v4l2_g_ctrl(vfd->ctrl_handler, p); 2130 if (ops->vidioc_g_ctrl) 2131 return ops->vidioc_g_ctrl(file, fh, p); 2132 if (ops->vidioc_g_ext_ctrls == NULL) 2133 return -ENOTTY; 2134 2135 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2136 ctrls.count = 1; 2137 ctrls.controls = &ctrl; 2138 ctrl.id = p->id; 2139 ctrl.value = p->value; 2140 if (check_ext_ctrls(&ctrls, 1)) { 2141 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls); 2142 2143 if (ret == 0) 2144 p->value = ctrl.value; 2145 return ret; 2146 } 2147 return -EINVAL; 2148 } 2149 2150 static int v4l_s_ctrl(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_control *p = arg; 2155 struct v4l2_fh *vfh = 2156 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2157 struct v4l2_ext_controls ctrls; 2158 struct v4l2_ext_control ctrl; 2159 2160 if (vfh && vfh->ctrl_handler) 2161 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p); 2162 if (vfd->ctrl_handler) 2163 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p); 2164 if (ops->vidioc_s_ctrl) 2165 return ops->vidioc_s_ctrl(file, fh, p); 2166 if (ops->vidioc_s_ext_ctrls == NULL) 2167 return -ENOTTY; 2168 2169 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2170 ctrls.count = 1; 2171 ctrls.controls = &ctrl; 2172 ctrl.id = p->id; 2173 ctrl.value = p->value; 2174 if (check_ext_ctrls(&ctrls, 1)) 2175 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls); 2176 return -EINVAL; 2177 } 2178 2179 static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2180 struct file *file, void *fh, void *arg) 2181 { 2182 struct video_device *vfd = video_devdata(file); 2183 struct v4l2_ext_controls *p = arg; 2184 struct v4l2_fh *vfh = 2185 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2186 2187 p->error_idx = p->count; 2188 if (vfh && vfh->ctrl_handler) 2189 return v4l2_g_ext_ctrls(vfh->ctrl_handler, vfd->v4l2_dev->mdev, p); 2190 if (vfd->ctrl_handler) 2191 return v4l2_g_ext_ctrls(vfd->ctrl_handler, vfd->v4l2_dev->mdev, p); 2192 if (ops->vidioc_g_ext_ctrls == NULL) 2193 return -ENOTTY; 2194 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) : 2195 -EINVAL; 2196 } 2197 2198 static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2199 struct file *file, void *fh, void *arg) 2200 { 2201 struct video_device *vfd = video_devdata(file); 2202 struct v4l2_ext_controls *p = arg; 2203 struct v4l2_fh *vfh = 2204 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2205 2206 p->error_idx = p->count; 2207 if (vfh && vfh->ctrl_handler) 2208 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, vfd->v4l2_dev->mdev, p); 2209 if (vfd->ctrl_handler) 2210 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, vfd->v4l2_dev->mdev, p); 2211 if (ops->vidioc_s_ext_ctrls == NULL) 2212 return -ENOTTY; 2213 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) : 2214 -EINVAL; 2215 } 2216 2217 static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2218 struct file *file, void *fh, void *arg) 2219 { 2220 struct video_device *vfd = video_devdata(file); 2221 struct v4l2_ext_controls *p = arg; 2222 struct v4l2_fh *vfh = 2223 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2224 2225 p->error_idx = p->count; 2226 if (vfh && vfh->ctrl_handler) 2227 return v4l2_try_ext_ctrls(vfh->ctrl_handler, vfd->v4l2_dev->mdev, p); 2228 if (vfd->ctrl_handler) 2229 return v4l2_try_ext_ctrls(vfd->ctrl_handler, vfd->v4l2_dev->mdev, p); 2230 if (ops->vidioc_try_ext_ctrls == NULL) 2231 return -ENOTTY; 2232 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) : 2233 -EINVAL; 2234 } 2235 2236 /* 2237 * The selection API specified originally that the _MPLANE buffer types 2238 * shouldn't be used. The reasons for this are lost in the mists of time 2239 * (or just really crappy memories). Regardless, this is really annoying 2240 * for userspace. So to keep things simple we map _MPLANE buffer types 2241 * to their 'regular' counterparts before calling the driver. And we 2242 * restore it afterwards. This way applications can use either buffer 2243 * type and drivers don't need to check for both. 2244 */ 2245 static int v4l_g_selection(const struct v4l2_ioctl_ops *ops, 2246 struct file *file, void *fh, void *arg) 2247 { 2248 struct v4l2_selection *p = arg; 2249 u32 old_type = p->type; 2250 int ret; 2251 2252 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2253 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2254 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2255 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2256 ret = ops->vidioc_g_selection(file, fh, p); 2257 p->type = old_type; 2258 return ret; 2259 } 2260 2261 static int v4l_s_selection(const struct v4l2_ioctl_ops *ops, 2262 struct file *file, void *fh, void *arg) 2263 { 2264 struct v4l2_selection *p = arg; 2265 u32 old_type = p->type; 2266 int ret; 2267 2268 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2269 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2270 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2271 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2272 ret = ops->vidioc_s_selection(file, fh, p); 2273 p->type = old_type; 2274 return ret; 2275 } 2276 2277 static int v4l_g_crop(const struct v4l2_ioctl_ops *ops, 2278 struct file *file, void *fh, void *arg) 2279 { 2280 struct video_device *vfd = video_devdata(file); 2281 struct v4l2_crop *p = arg; 2282 struct v4l2_selection s = { 2283 .type = p->type, 2284 }; 2285 int ret; 2286 2287 /* simulate capture crop using selection api */ 2288 2289 /* crop means compose for output devices */ 2290 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2291 s.target = V4L2_SEL_TGT_COMPOSE; 2292 else 2293 s.target = V4L2_SEL_TGT_CROP; 2294 2295 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2296 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2297 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2298 2299 ret = v4l_g_selection(ops, file, fh, &s); 2300 2301 /* copying results to old structure on success */ 2302 if (!ret) 2303 p->c = s.r; 2304 return ret; 2305 } 2306 2307 static int v4l_s_crop(const struct v4l2_ioctl_ops *ops, 2308 struct file *file, void *fh, void *arg) 2309 { 2310 struct video_device *vfd = video_devdata(file); 2311 struct v4l2_crop *p = arg; 2312 struct v4l2_selection s = { 2313 .type = p->type, 2314 .r = p->c, 2315 }; 2316 2317 /* simulate capture crop using selection api */ 2318 2319 /* crop means compose for output devices */ 2320 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2321 s.target = V4L2_SEL_TGT_COMPOSE; 2322 else 2323 s.target = V4L2_SEL_TGT_CROP; 2324 2325 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2326 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2327 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2328 2329 return v4l_s_selection(ops, file, fh, &s); 2330 } 2331 2332 static int v4l_cropcap(const struct v4l2_ioctl_ops *ops, 2333 struct file *file, void *fh, void *arg) 2334 { 2335 struct video_device *vfd = video_devdata(file); 2336 struct v4l2_cropcap *p = arg; 2337 struct v4l2_selection s = { .type = p->type }; 2338 int ret = 0; 2339 2340 /* setting trivial pixelaspect */ 2341 p->pixelaspect.numerator = 1; 2342 p->pixelaspect.denominator = 1; 2343 2344 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2345 s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2346 else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2347 s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2348 2349 /* 2350 * The determine_valid_ioctls() call already should ensure 2351 * that this can never happen, but just in case... 2352 */ 2353 if (WARN_ON(!ops->vidioc_g_selection)) 2354 return -ENOTTY; 2355 2356 if (ops->vidioc_g_pixelaspect) 2357 ret = ops->vidioc_g_pixelaspect(file, fh, s.type, 2358 &p->pixelaspect); 2359 2360 /* 2361 * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the 2362 * square pixel aspect ratio in that case. 2363 */ 2364 if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD) 2365 return ret; 2366 2367 /* Use g_selection() to fill in the bounds and defrect rectangles */ 2368 2369 /* obtaining bounds */ 2370 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2371 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS; 2372 else 2373 s.target = V4L2_SEL_TGT_CROP_BOUNDS; 2374 2375 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2376 s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ? 2377 V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS; 2378 2379 ret = v4l_g_selection(ops, file, fh, &s); 2380 if (ret) 2381 return ret; 2382 p->bounds = s.r; 2383 2384 /* obtaining defrect */ 2385 if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS) 2386 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT; 2387 else 2388 s.target = V4L2_SEL_TGT_CROP_DEFAULT; 2389 2390 ret = v4l_g_selection(ops, file, fh, &s); 2391 if (ret) 2392 return ret; 2393 p->defrect = s.r; 2394 2395 return 0; 2396 } 2397 2398 static int v4l_log_status(const struct v4l2_ioctl_ops *ops, 2399 struct file *file, void *fh, void *arg) 2400 { 2401 struct video_device *vfd = video_devdata(file); 2402 int ret; 2403 2404 if (vfd->v4l2_dev) 2405 pr_info("%s: ================= START STATUS =================\n", 2406 vfd->v4l2_dev->name); 2407 ret = ops->vidioc_log_status(file, fh); 2408 if (vfd->v4l2_dev) 2409 pr_info("%s: ================== END STATUS ==================\n", 2410 vfd->v4l2_dev->name); 2411 return ret; 2412 } 2413 2414 static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops, 2415 struct file *file, void *fh, void *arg) 2416 { 2417 #ifdef CONFIG_VIDEO_ADV_DEBUG 2418 struct v4l2_dbg_register *p = arg; 2419 struct video_device *vfd = video_devdata(file); 2420 struct v4l2_subdev *sd; 2421 int idx = 0; 2422 2423 if (!capable(CAP_SYS_ADMIN)) 2424 return -EPERM; 2425 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2426 if (vfd->v4l2_dev == NULL) 2427 return -EINVAL; 2428 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2429 if (p->match.addr == idx++) 2430 return v4l2_subdev_call(sd, core, g_register, p); 2431 return -EINVAL; 2432 } 2433 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2434 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2435 return ops->vidioc_g_register(file, fh, p); 2436 return -EINVAL; 2437 #else 2438 return -ENOTTY; 2439 #endif 2440 } 2441 2442 static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops, 2443 struct file *file, void *fh, void *arg) 2444 { 2445 #ifdef CONFIG_VIDEO_ADV_DEBUG 2446 const struct v4l2_dbg_register *p = arg; 2447 struct video_device *vfd = video_devdata(file); 2448 struct v4l2_subdev *sd; 2449 int idx = 0; 2450 2451 if (!capable(CAP_SYS_ADMIN)) 2452 return -EPERM; 2453 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2454 if (vfd->v4l2_dev == NULL) 2455 return -EINVAL; 2456 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2457 if (p->match.addr == idx++) 2458 return v4l2_subdev_call(sd, core, s_register, p); 2459 return -EINVAL; 2460 } 2461 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2462 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2463 return ops->vidioc_s_register(file, fh, p); 2464 return -EINVAL; 2465 #else 2466 return -ENOTTY; 2467 #endif 2468 } 2469 2470 static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops, 2471 struct file *file, void *fh, void *arg) 2472 { 2473 #ifdef CONFIG_VIDEO_ADV_DEBUG 2474 struct video_device *vfd = video_devdata(file); 2475 struct v4l2_dbg_chip_info *p = arg; 2476 struct v4l2_subdev *sd; 2477 int idx = 0; 2478 2479 switch (p->match.type) { 2480 case V4L2_CHIP_MATCH_BRIDGE: 2481 if (ops->vidioc_s_register) 2482 p->flags |= V4L2_CHIP_FL_WRITABLE; 2483 if (ops->vidioc_g_register) 2484 p->flags |= V4L2_CHIP_FL_READABLE; 2485 strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name)); 2486 if (ops->vidioc_g_chip_info) 2487 return ops->vidioc_g_chip_info(file, fh, arg); 2488 if (p->match.addr) 2489 return -EINVAL; 2490 return 0; 2491 2492 case V4L2_CHIP_MATCH_SUBDEV: 2493 if (vfd->v4l2_dev == NULL) 2494 break; 2495 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) { 2496 if (p->match.addr != idx++) 2497 continue; 2498 if (sd->ops->core && sd->ops->core->s_register) 2499 p->flags |= V4L2_CHIP_FL_WRITABLE; 2500 if (sd->ops->core && sd->ops->core->g_register) 2501 p->flags |= V4L2_CHIP_FL_READABLE; 2502 strscpy(p->name, sd->name, sizeof(p->name)); 2503 return 0; 2504 } 2505 break; 2506 } 2507 return -EINVAL; 2508 #else 2509 return -ENOTTY; 2510 #endif 2511 } 2512 2513 static int v4l_dqevent(const struct v4l2_ioctl_ops *ops, 2514 struct file *file, void *fh, void *arg) 2515 { 2516 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK); 2517 } 2518 2519 static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops, 2520 struct file *file, void *fh, void *arg) 2521 { 2522 return ops->vidioc_subscribe_event(fh, arg); 2523 } 2524 2525 static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops, 2526 struct file *file, void *fh, void *arg) 2527 { 2528 return ops->vidioc_unsubscribe_event(fh, arg); 2529 } 2530 2531 static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops, 2532 struct file *file, void *fh, void *arg) 2533 { 2534 struct v4l2_sliced_vbi_cap *p = arg; 2535 int ret = check_fmt(file, p->type); 2536 2537 if (ret) 2538 return ret; 2539 2540 /* Clear up to type, everything after type is zeroed already */ 2541 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type)); 2542 2543 return ops->vidioc_g_sliced_vbi_cap(file, fh, p); 2544 } 2545 2546 static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops, 2547 struct file *file, void *fh, void *arg) 2548 { 2549 struct video_device *vfd = video_devdata(file); 2550 struct v4l2_frequency_band *p = arg; 2551 enum v4l2_tuner_type type; 2552 int err; 2553 2554 if (vfd->vfl_type == VFL_TYPE_SDR) { 2555 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 2556 return -EINVAL; 2557 type = p->type; 2558 } else { 2559 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2560 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2561 if (type != p->type) 2562 return -EINVAL; 2563 } 2564 if (ops->vidioc_enum_freq_bands) { 2565 err = ops->vidioc_enum_freq_bands(file, fh, p); 2566 if (err != -ENOTTY) 2567 return err; 2568 } 2569 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) { 2570 struct v4l2_tuner t = { 2571 .index = p->tuner, 2572 .type = type, 2573 }; 2574 2575 if (p->index) 2576 return -EINVAL; 2577 err = ops->vidioc_g_tuner(file, fh, &t); 2578 if (err) 2579 return err; 2580 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2581 p->rangelow = t.rangelow; 2582 p->rangehigh = t.rangehigh; 2583 p->modulation = (type == V4L2_TUNER_RADIO) ? 2584 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2585 return 0; 2586 } 2587 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) { 2588 struct v4l2_modulator m = { 2589 .index = p->tuner, 2590 }; 2591 2592 if (type != V4L2_TUNER_RADIO) 2593 return -EINVAL; 2594 if (p->index) 2595 return -EINVAL; 2596 err = ops->vidioc_g_modulator(file, fh, &m); 2597 if (err) 2598 return err; 2599 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2600 p->rangelow = m.rangelow; 2601 p->rangehigh = m.rangehigh; 2602 p->modulation = (type == V4L2_TUNER_RADIO) ? 2603 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2604 return 0; 2605 } 2606 return -ENOTTY; 2607 } 2608 2609 struct v4l2_ioctl_info { 2610 unsigned int ioctl; 2611 u32 flags; 2612 const char * const name; 2613 int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file, 2614 void *fh, void *p); 2615 void (*debug)(const void *arg, bool write_only); 2616 }; 2617 2618 /* This control needs a priority check */ 2619 #define INFO_FL_PRIO (1 << 0) 2620 /* This control can be valid if the filehandle passes a control handler. */ 2621 #define INFO_FL_CTRL (1 << 1) 2622 /* Queuing ioctl */ 2623 #define INFO_FL_QUEUE (1 << 2) 2624 /* Always copy back result, even on error */ 2625 #define INFO_FL_ALWAYS_COPY (1 << 3) 2626 /* Zero struct from after the field to the end */ 2627 #define INFO_FL_CLEAR(v4l2_struct, field) \ 2628 ((offsetof(struct v4l2_struct, field) + \ 2629 sizeof(((struct v4l2_struct *)0)->field)) << 16) 2630 #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16) 2631 2632 #define DEFINE_V4L_STUB_FUNC(_vidioc) \ 2633 static int v4l_stub_ ## _vidioc( \ 2634 const struct v4l2_ioctl_ops *ops, \ 2635 struct file *file, void *fh, void *p) \ 2636 { \ 2637 return ops->vidioc_ ## _vidioc(file, fh, p); \ 2638 } 2639 2640 #define IOCTL_INFO(_ioctl, _func, _debug, _flags) \ 2641 [_IOC_NR(_ioctl)] = { \ 2642 .ioctl = _ioctl, \ 2643 .flags = _flags, \ 2644 .name = #_ioctl, \ 2645 .func = _func, \ 2646 .debug = _debug, \ 2647 } 2648 2649 DEFINE_V4L_STUB_FUNC(g_fbuf) 2650 DEFINE_V4L_STUB_FUNC(s_fbuf) 2651 DEFINE_V4L_STUB_FUNC(expbuf) 2652 DEFINE_V4L_STUB_FUNC(g_std) 2653 DEFINE_V4L_STUB_FUNC(g_audio) 2654 DEFINE_V4L_STUB_FUNC(s_audio) 2655 DEFINE_V4L_STUB_FUNC(g_input) 2656 DEFINE_V4L_STUB_FUNC(g_edid) 2657 DEFINE_V4L_STUB_FUNC(s_edid) 2658 DEFINE_V4L_STUB_FUNC(g_output) 2659 DEFINE_V4L_STUB_FUNC(g_audout) 2660 DEFINE_V4L_STUB_FUNC(s_audout) 2661 DEFINE_V4L_STUB_FUNC(g_jpegcomp) 2662 DEFINE_V4L_STUB_FUNC(s_jpegcomp) 2663 DEFINE_V4L_STUB_FUNC(enumaudio) 2664 DEFINE_V4L_STUB_FUNC(enumaudout) 2665 DEFINE_V4L_STUB_FUNC(enum_framesizes) 2666 DEFINE_V4L_STUB_FUNC(enum_frameintervals) 2667 DEFINE_V4L_STUB_FUNC(g_enc_index) 2668 DEFINE_V4L_STUB_FUNC(encoder_cmd) 2669 DEFINE_V4L_STUB_FUNC(try_encoder_cmd) 2670 DEFINE_V4L_STUB_FUNC(decoder_cmd) 2671 DEFINE_V4L_STUB_FUNC(try_decoder_cmd) 2672 DEFINE_V4L_STUB_FUNC(s_dv_timings) 2673 DEFINE_V4L_STUB_FUNC(g_dv_timings) 2674 DEFINE_V4L_STUB_FUNC(enum_dv_timings) 2675 DEFINE_V4L_STUB_FUNC(query_dv_timings) 2676 DEFINE_V4L_STUB_FUNC(dv_timings_cap) 2677 2678 static const struct v4l2_ioctl_info v4l2_ioctls[] = { 2679 IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0), 2680 IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)), 2681 IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0), 2682 IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO), 2683 IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2684 IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)), 2685 IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0), 2686 IOCTL_INFO(VIDIOC_S_FBUF, v4l_stub_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO), 2687 IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO), 2688 IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE), 2689 IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)), 2690 IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE), 2691 IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2692 IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2693 IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)), 2694 IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO), 2695 IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0), 2696 IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO), 2697 IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)), 2698 IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)), 2699 IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)), 2700 IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL), 2701 IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)), 2702 IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO), 2703 IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0), 2704 IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO), 2705 IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)), 2706 IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)), 2707 IOCTL_INFO(VIDIOC_G_INPUT, v4l_stub_g_input, v4l_print_u32, 0), 2708 IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO), 2709 IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY), 2710 IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY), 2711 IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_stub_g_output, v4l_print_u32, 0), 2712 IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO), 2713 IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)), 2714 IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0), 2715 IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO), 2716 IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)), 2717 IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO), 2718 IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)), 2719 IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO), 2720 IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)), 2721 IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)), 2722 IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO), 2723 IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)), 2724 IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)), 2725 IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0), 2726 IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO), 2727 IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0), 2728 IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0), 2729 IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)), 2730 IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)), 2731 IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0), 2732 IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO), 2733 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)), 2734 IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0), 2735 IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL), 2736 IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL), 2737 IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL), 2738 IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)), 2739 IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)), 2740 IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0), 2741 IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2742 IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2743 IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO), 2744 IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0), 2745 IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0), 2746 IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0), 2747 IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO), 2748 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)), 2749 IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0), 2750 IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0), 2751 IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0), 2752 IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0), 2753 IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2754 IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE), 2755 IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)), 2756 IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY), 2757 IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)), 2758 IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0), 2759 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)), 2760 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)), 2761 }; 2762 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) 2763 2764 static bool v4l2_is_known_ioctl(unsigned int cmd) 2765 { 2766 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2767 return false; 2768 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd; 2769 } 2770 2771 static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, 2772 struct v4l2_fh *vfh, unsigned int cmd, 2773 void *arg) 2774 { 2775 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2776 return vdev->lock; 2777 #if IS_ENABLED(CONFIG_V4L2_MEM2MEM_DEV) 2778 if (vfh && vfh->m2m_ctx && 2779 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) { 2780 if (vfh->m2m_ctx->q_lock) 2781 return vfh->m2m_ctx->q_lock; 2782 } 2783 #endif 2784 if (vdev->queue && vdev->queue->lock && 2785 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) 2786 return vdev->queue->lock; 2787 return vdev->lock; 2788 } 2789 2790 /* Common ioctl debug function. This function can be used by 2791 external ioctl messages as well as internal V4L ioctl */ 2792 void v4l_printk_ioctl(const char *prefix, unsigned int cmd) 2793 { 2794 const char *dir, *type; 2795 2796 if (prefix) 2797 printk(KERN_DEBUG "%s: ", prefix); 2798 2799 switch (_IOC_TYPE(cmd)) { 2800 case 'd': 2801 type = "v4l2_int"; 2802 break; 2803 case 'V': 2804 if (_IOC_NR(cmd) >= V4L2_IOCTLS) { 2805 type = "v4l2"; 2806 break; 2807 } 2808 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name); 2809 return; 2810 default: 2811 type = "unknown"; 2812 break; 2813 } 2814 2815 switch (_IOC_DIR(cmd)) { 2816 case _IOC_NONE: dir = "--"; break; 2817 case _IOC_READ: dir = "r-"; break; 2818 case _IOC_WRITE: dir = "-w"; break; 2819 case _IOC_READ | _IOC_WRITE: dir = "rw"; break; 2820 default: dir = "*ERR*"; break; 2821 } 2822 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)", 2823 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd); 2824 } 2825 EXPORT_SYMBOL(v4l_printk_ioctl); 2826 2827 static long __video_do_ioctl(struct file *file, 2828 unsigned int cmd, void *arg) 2829 { 2830 struct video_device *vfd = video_devdata(file); 2831 struct mutex *req_queue_lock = NULL; 2832 struct mutex *lock; /* ioctl serialization mutex */ 2833 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 2834 bool write_only = false; 2835 struct v4l2_ioctl_info default_info; 2836 const struct v4l2_ioctl_info *info; 2837 void *fh = file->private_data; 2838 struct v4l2_fh *vfh = NULL; 2839 int dev_debug = vfd->dev_debug; 2840 long ret = -ENOTTY; 2841 2842 if (ops == NULL) { 2843 pr_warn("%s: has no ioctl_ops.\n", 2844 video_device_node_name(vfd)); 2845 return ret; 2846 } 2847 2848 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 2849 vfh = file->private_data; 2850 2851 /* 2852 * We need to serialize streamon/off with queueing new requests. 2853 * These ioctls may trigger the cancellation of a streaming 2854 * operation, and that should not be mixed with queueing a new 2855 * request at the same time. 2856 */ 2857 if (v4l2_device_supports_requests(vfd->v4l2_dev) && 2858 (cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF)) { 2859 req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex; 2860 2861 if (mutex_lock_interruptible(req_queue_lock)) 2862 return -ERESTARTSYS; 2863 } 2864 2865 lock = v4l2_ioctl_get_lock(vfd, vfh, cmd, arg); 2866 2867 if (lock && mutex_lock_interruptible(lock)) { 2868 if (req_queue_lock) 2869 mutex_unlock(req_queue_lock); 2870 return -ERESTARTSYS; 2871 } 2872 2873 if (!video_is_registered(vfd)) { 2874 ret = -ENODEV; 2875 goto unlock; 2876 } 2877 2878 if (v4l2_is_known_ioctl(cmd)) { 2879 info = &v4l2_ioctls[_IOC_NR(cmd)]; 2880 2881 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) && 2882 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler)) 2883 goto done; 2884 2885 if (vfh && (info->flags & INFO_FL_PRIO)) { 2886 ret = v4l2_prio_check(vfd->prio, vfh->prio); 2887 if (ret) 2888 goto done; 2889 } 2890 } else { 2891 default_info.ioctl = cmd; 2892 default_info.flags = 0; 2893 default_info.debug = v4l_print_default; 2894 info = &default_info; 2895 } 2896 2897 write_only = _IOC_DIR(cmd) == _IOC_WRITE; 2898 if (info != &default_info) { 2899 ret = info->func(ops, file, fh, arg); 2900 } else if (!ops->vidioc_default) { 2901 ret = -ENOTTY; 2902 } else { 2903 ret = ops->vidioc_default(file, fh, 2904 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0, 2905 cmd, arg); 2906 } 2907 2908 done: 2909 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) { 2910 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) && 2911 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF)) 2912 goto unlock; 2913 2914 v4l_printk_ioctl(video_device_node_name(vfd), cmd); 2915 if (ret < 0) 2916 pr_cont(": error %ld", ret); 2917 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG)) 2918 pr_cont("\n"); 2919 else if (_IOC_DIR(cmd) == _IOC_NONE) 2920 info->debug(arg, write_only); 2921 else { 2922 pr_cont(": "); 2923 info->debug(arg, write_only); 2924 } 2925 } 2926 2927 unlock: 2928 if (lock) 2929 mutex_unlock(lock); 2930 if (req_queue_lock) 2931 mutex_unlock(req_queue_lock); 2932 return ret; 2933 } 2934 2935 static int check_array_args(unsigned int cmd, void *parg, size_t *array_size, 2936 void __user **user_ptr, void ***kernel_ptr) 2937 { 2938 int ret = 0; 2939 2940 switch (cmd) { 2941 case VIDIOC_PREPARE_BUF: 2942 case VIDIOC_QUERYBUF: 2943 case VIDIOC_QBUF: 2944 case VIDIOC_DQBUF: { 2945 struct v4l2_buffer *buf = parg; 2946 2947 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) { 2948 if (buf->length > VIDEO_MAX_PLANES) { 2949 ret = -EINVAL; 2950 break; 2951 } 2952 *user_ptr = (void __user *)buf->m.planes; 2953 *kernel_ptr = (void **)&buf->m.planes; 2954 *array_size = sizeof(struct v4l2_plane) * buf->length; 2955 ret = 1; 2956 } 2957 break; 2958 } 2959 2960 case VIDIOC_G_EDID: 2961 case VIDIOC_S_EDID: { 2962 struct v4l2_edid *edid = parg; 2963 2964 if (edid->blocks) { 2965 if (edid->blocks > 256) { 2966 ret = -EINVAL; 2967 break; 2968 } 2969 *user_ptr = (void __user *)edid->edid; 2970 *kernel_ptr = (void **)&edid->edid; 2971 *array_size = edid->blocks * 128; 2972 ret = 1; 2973 } 2974 break; 2975 } 2976 2977 case VIDIOC_S_EXT_CTRLS: 2978 case VIDIOC_G_EXT_CTRLS: 2979 case VIDIOC_TRY_EXT_CTRLS: { 2980 struct v4l2_ext_controls *ctrls = parg; 2981 2982 if (ctrls->count != 0) { 2983 if (ctrls->count > V4L2_CID_MAX_CTRLS) { 2984 ret = -EINVAL; 2985 break; 2986 } 2987 *user_ptr = (void __user *)ctrls->controls; 2988 *kernel_ptr = (void **)&ctrls->controls; 2989 *array_size = sizeof(struct v4l2_ext_control) 2990 * ctrls->count; 2991 ret = 1; 2992 } 2993 break; 2994 } 2995 } 2996 2997 return ret; 2998 } 2999 3000 long 3001 video_usercopy(struct file *file, unsigned int cmd, unsigned long arg, 3002 v4l2_kioctl func) 3003 { 3004 char sbuf[128]; 3005 void *mbuf = NULL; 3006 void *parg = (void *)arg; 3007 long err = -EINVAL; 3008 bool has_array_args; 3009 bool always_copy = false; 3010 size_t array_size = 0; 3011 void __user *user_ptr = NULL; 3012 void **kernel_ptr = NULL; 3013 const size_t ioc_size = _IOC_SIZE(cmd); 3014 3015 /* Copy arguments into temp kernel buffer */ 3016 if (_IOC_DIR(cmd) != _IOC_NONE) { 3017 if (ioc_size <= sizeof(sbuf)) { 3018 parg = sbuf; 3019 } else { 3020 /* too big to allocate from stack */ 3021 mbuf = kvmalloc(ioc_size, GFP_KERNEL); 3022 if (NULL == mbuf) 3023 return -ENOMEM; 3024 parg = mbuf; 3025 } 3026 3027 err = -EFAULT; 3028 if (_IOC_DIR(cmd) & _IOC_WRITE) { 3029 unsigned int n = ioc_size; 3030 3031 /* 3032 * In some cases, only a few fields are used as input, 3033 * i.e. when the app sets "index" and then the driver 3034 * fills in the rest of the structure for the thing 3035 * with that index. We only need to copy up the first 3036 * non-input field. 3037 */ 3038 if (v4l2_is_known_ioctl(cmd)) { 3039 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags; 3040 3041 if (flags & INFO_FL_CLEAR_MASK) 3042 n = (flags & INFO_FL_CLEAR_MASK) >> 16; 3043 always_copy = flags & INFO_FL_ALWAYS_COPY; 3044 } 3045 3046 if (copy_from_user(parg, (void __user *)arg, n)) 3047 goto out; 3048 3049 /* zero out anything we don't copy from userspace */ 3050 if (n < ioc_size) 3051 memset((u8 *)parg + n, 0, ioc_size - n); 3052 } else { 3053 /* read-only ioctl */ 3054 memset(parg, 0, ioc_size); 3055 } 3056 } 3057 3058 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr); 3059 if (err < 0) 3060 goto out; 3061 has_array_args = err; 3062 3063 if (has_array_args) { 3064 /* 3065 * When adding new types of array args, make sure that the 3066 * parent argument to ioctl (which contains the pointer to the 3067 * array) fits into sbuf (so that mbuf will still remain 3068 * unused up to here). 3069 */ 3070 mbuf = kvmalloc(array_size, GFP_KERNEL); 3071 err = -ENOMEM; 3072 if (NULL == mbuf) 3073 goto out_array_args; 3074 err = -EFAULT; 3075 if (copy_from_user(mbuf, user_ptr, array_size)) 3076 goto out_array_args; 3077 *kernel_ptr = mbuf; 3078 } 3079 3080 /* Handles IOCTL */ 3081 err = func(file, cmd, parg); 3082 if (err == -ENOTTY || err == -ENOIOCTLCMD) { 3083 err = -ENOTTY; 3084 goto out; 3085 } 3086 3087 if (err == 0) { 3088 if (cmd == VIDIOC_DQBUF) 3089 trace_v4l2_dqbuf(video_devdata(file)->minor, parg); 3090 else if (cmd == VIDIOC_QBUF) 3091 trace_v4l2_qbuf(video_devdata(file)->minor, parg); 3092 } 3093 3094 if (has_array_args) { 3095 *kernel_ptr = (void __force *)user_ptr; 3096 if (copy_to_user(user_ptr, mbuf, array_size)) 3097 err = -EFAULT; 3098 goto out_array_args; 3099 } 3100 /* 3101 * Some ioctls can return an error, but still have valid 3102 * results that must be returned. 3103 */ 3104 if (err < 0 && !always_copy) 3105 goto out; 3106 3107 out_array_args: 3108 /* Copy results into user buffer */ 3109 switch (_IOC_DIR(cmd)) { 3110 case _IOC_READ: 3111 case (_IOC_WRITE | _IOC_READ): 3112 if (copy_to_user((void __user *)arg, parg, ioc_size)) 3113 err = -EFAULT; 3114 break; 3115 } 3116 3117 out: 3118 kvfree(mbuf); 3119 return err; 3120 } 3121 3122 long video_ioctl2(struct file *file, 3123 unsigned int cmd, unsigned long arg) 3124 { 3125 return video_usercopy(file, cmd, arg, __video_do_ioctl); 3126 } 3127 EXPORT_SYMBOL(video_ioctl2); 3128