1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Video capture interface for Linux version 2 4 * 5 * A generic framework to process V4L2 ioctl commands. 6 * 7 * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1) 8 * Mauro Carvalho Chehab <mchehab@kernel.org> (version 2) 9 */ 10 11 #include <linux/compat.h> 12 #include <linux/mm.h> 13 #include <linux/module.h> 14 #include <linux/slab.h> 15 #include <linux/types.h> 16 #include <linux/kernel.h> 17 #include <linux/version.h> 18 19 #include <linux/videodev2.h> 20 21 #include <media/media-device.h> /* for media_set_bus_info() */ 22 #include <media/v4l2-common.h> 23 #include <media/v4l2-ioctl.h> 24 #include <media/v4l2-ctrls.h> 25 #include <media/v4l2-fh.h> 26 #include <media/v4l2-event.h> 27 #include <media/v4l2-device.h> 28 #include <media/videobuf2-v4l2.h> 29 #include <media/v4l2-mc.h> 30 #include <media/v4l2-mem2mem.h> 31 32 #include <trace/events/v4l2.h> 33 34 /* Zero out the end of the struct pointed to by p. Everything after, but 35 * not including, the specified field is cleared. */ 36 #define CLEAR_AFTER_FIELD(p, field) \ 37 memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \ 38 0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field)) 39 40 #define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls) 41 42 struct std_descr { 43 v4l2_std_id std; 44 const char *descr; 45 }; 46 47 static const struct std_descr standards[] = { 48 { V4L2_STD_NTSC, "NTSC" }, 49 { V4L2_STD_NTSC_M, "NTSC-M" }, 50 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" }, 51 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" }, 52 { V4L2_STD_NTSC_443, "NTSC-443" }, 53 { V4L2_STD_PAL, "PAL" }, 54 { V4L2_STD_PAL_BG, "PAL-BG" }, 55 { V4L2_STD_PAL_B, "PAL-B" }, 56 { V4L2_STD_PAL_B1, "PAL-B1" }, 57 { V4L2_STD_PAL_G, "PAL-G" }, 58 { V4L2_STD_PAL_H, "PAL-H" }, 59 { V4L2_STD_PAL_I, "PAL-I" }, 60 { V4L2_STD_PAL_DK, "PAL-DK" }, 61 { V4L2_STD_PAL_D, "PAL-D" }, 62 { V4L2_STD_PAL_D1, "PAL-D1" }, 63 { V4L2_STD_PAL_K, "PAL-K" }, 64 { V4L2_STD_PAL_M, "PAL-M" }, 65 { V4L2_STD_PAL_N, "PAL-N" }, 66 { V4L2_STD_PAL_Nc, "PAL-Nc" }, 67 { V4L2_STD_PAL_60, "PAL-60" }, 68 { V4L2_STD_SECAM, "SECAM" }, 69 { V4L2_STD_SECAM_B, "SECAM-B" }, 70 { V4L2_STD_SECAM_G, "SECAM-G" }, 71 { V4L2_STD_SECAM_H, "SECAM-H" }, 72 { V4L2_STD_SECAM_DK, "SECAM-DK" }, 73 { V4L2_STD_SECAM_D, "SECAM-D" }, 74 { V4L2_STD_SECAM_K, "SECAM-K" }, 75 { V4L2_STD_SECAM_K1, "SECAM-K1" }, 76 { V4L2_STD_SECAM_L, "SECAM-L" }, 77 { V4L2_STD_SECAM_LC, "SECAM-Lc" }, 78 { 0, "Unknown" } 79 }; 80 81 /* video4linux standard ID conversion to standard name 82 */ 83 const char *v4l2_norm_to_name(v4l2_std_id id) 84 { 85 u32 myid = id; 86 int i; 87 88 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle 89 64 bit comparisons. So, on that architecture, with some gcc 90 variants, compilation fails. Currently, the max value is 30bit wide. 91 */ 92 BUG_ON(myid != id); 93 94 for (i = 0; standards[i].std; i++) 95 if (myid == standards[i].std) 96 break; 97 return standards[i].descr; 98 } 99 EXPORT_SYMBOL(v4l2_norm_to_name); 100 101 /* Returns frame period for the given standard */ 102 void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod) 103 { 104 if (id & V4L2_STD_525_60) { 105 frameperiod->numerator = 1001; 106 frameperiod->denominator = 30000; 107 } else { 108 frameperiod->numerator = 1; 109 frameperiod->denominator = 25; 110 } 111 } 112 EXPORT_SYMBOL(v4l2_video_std_frame_period); 113 114 /* Fill in the fields of a v4l2_standard structure according to the 115 'id' and 'transmission' parameters. Returns negative on error. */ 116 int v4l2_video_std_construct(struct v4l2_standard *vs, 117 int id, const char *name) 118 { 119 vs->id = id; 120 v4l2_video_std_frame_period(id, &vs->frameperiod); 121 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625; 122 strscpy(vs->name, name, sizeof(vs->name)); 123 return 0; 124 } 125 EXPORT_SYMBOL(v4l2_video_std_construct); 126 127 /* Fill in the fields of a v4l2_standard structure according to the 128 * 'id' and 'vs->index' parameters. Returns negative on error. */ 129 int v4l_video_std_enumstd(struct v4l2_standard *vs, v4l2_std_id id) 130 { 131 v4l2_std_id curr_id = 0; 132 unsigned int index = vs->index, i, j = 0; 133 const char *descr = ""; 134 135 /* Return -ENODATA if the id for the current input 136 or output is 0, meaning that it doesn't support this API. */ 137 if (id == 0) 138 return -ENODATA; 139 140 /* Return norm array in a canonical way */ 141 for (i = 0; i <= index && id; i++) { 142 /* last std value in the standards array is 0, so this 143 while always ends there since (id & 0) == 0. */ 144 while ((id & standards[j].std) != standards[j].std) 145 j++; 146 curr_id = standards[j].std; 147 descr = standards[j].descr; 148 j++; 149 if (curr_id == 0) 150 break; 151 if (curr_id != V4L2_STD_PAL && 152 curr_id != V4L2_STD_SECAM && 153 curr_id != V4L2_STD_NTSC) 154 id &= ~curr_id; 155 } 156 if (i <= index) 157 return -EINVAL; 158 159 v4l2_video_std_construct(vs, curr_id, descr); 160 return 0; 161 } 162 163 /* ----------------------------------------------------------------- */ 164 /* some arrays for pretty-printing debug messages of enum types */ 165 166 const char *v4l2_field_names[] = { 167 [V4L2_FIELD_ANY] = "any", 168 [V4L2_FIELD_NONE] = "none", 169 [V4L2_FIELD_TOP] = "top", 170 [V4L2_FIELD_BOTTOM] = "bottom", 171 [V4L2_FIELD_INTERLACED] = "interlaced", 172 [V4L2_FIELD_SEQ_TB] = "seq-tb", 173 [V4L2_FIELD_SEQ_BT] = "seq-bt", 174 [V4L2_FIELD_ALTERNATE] = "alternate", 175 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb", 176 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt", 177 }; 178 EXPORT_SYMBOL(v4l2_field_names); 179 180 const char *v4l2_type_names[] = { 181 [0] = "0", 182 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap", 183 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay", 184 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out", 185 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap", 186 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out", 187 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap", 188 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out", 189 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay", 190 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane", 191 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane", 192 [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap", 193 [V4L2_BUF_TYPE_SDR_OUTPUT] = "sdr-out", 194 [V4L2_BUF_TYPE_META_CAPTURE] = "meta-cap", 195 [V4L2_BUF_TYPE_META_OUTPUT] = "meta-out", 196 }; 197 EXPORT_SYMBOL(v4l2_type_names); 198 199 static const char *v4l2_memory_names[] = { 200 [V4L2_MEMORY_MMAP] = "mmap", 201 [V4L2_MEMORY_USERPTR] = "userptr", 202 [V4L2_MEMORY_OVERLAY] = "overlay", 203 [V4L2_MEMORY_DMABUF] = "dmabuf", 204 }; 205 206 #define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown") 207 208 /* ------------------------------------------------------------------ */ 209 /* debug help functions */ 210 211 static void v4l_print_querycap(const void *arg, bool write_only) 212 { 213 const struct v4l2_capability *p = arg; 214 215 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, capabilities=0x%08x, device_caps=0x%08x\n", 216 (int)sizeof(p->driver), p->driver, 217 (int)sizeof(p->card), p->card, 218 (int)sizeof(p->bus_info), p->bus_info, 219 p->version, p->capabilities, p->device_caps); 220 } 221 222 static void v4l_print_enuminput(const void *arg, bool write_only) 223 { 224 const struct v4l2_input *p = arg; 225 226 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, std=0x%08Lx, status=0x%x, capabilities=0x%x\n", 227 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, 228 p->tuner, (unsigned long long)p->std, p->status, 229 p->capabilities); 230 } 231 232 static void v4l_print_enumoutput(const void *arg, bool write_only) 233 { 234 const struct v4l2_output *p = arg; 235 236 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, modulator=%u, std=0x%08Lx, capabilities=0x%x\n", 237 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, 238 p->modulator, (unsigned long long)p->std, p->capabilities); 239 } 240 241 static void v4l_print_audio(const void *arg, bool write_only) 242 { 243 const struct v4l2_audio *p = arg; 244 245 if (write_only) 246 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode); 247 else 248 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", 249 p->index, (int)sizeof(p->name), p->name, 250 p->capability, p->mode); 251 } 252 253 static void v4l_print_audioout(const void *arg, bool write_only) 254 { 255 const struct v4l2_audioout *p = arg; 256 257 if (write_only) 258 pr_cont("index=%u\n", p->index); 259 else 260 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", 261 p->index, (int)sizeof(p->name), p->name, 262 p->capability, p->mode); 263 } 264 265 static void v4l_print_fmtdesc(const void *arg, bool write_only) 266 { 267 const struct v4l2_fmtdesc *p = arg; 268 269 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%p4cc, mbus_code=0x%04x, description='%.*s'\n", 270 p->index, prt_names(p->type, v4l2_type_names), 271 p->flags, &p->pixelformat, p->mbus_code, 272 (int)sizeof(p->description), p->description); 273 } 274 275 static void v4l_print_format(const void *arg, bool write_only) 276 { 277 const struct v4l2_format *p = arg; 278 const struct v4l2_pix_format *pix; 279 const struct v4l2_pix_format_mplane *mp; 280 const struct v4l2_vbi_format *vbi; 281 const struct v4l2_sliced_vbi_format *sliced; 282 const struct v4l2_window *win; 283 const struct v4l2_meta_format *meta; 284 u32 pixelformat; 285 u32 planes; 286 unsigned i; 287 288 pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); 289 switch (p->type) { 290 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 291 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 292 pix = &p->fmt.pix; 293 pr_cont(", width=%u, height=%u, pixelformat=%p4cc, field=%s, bytesperline=%u, sizeimage=%u, colorspace=%d, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n", 294 pix->width, pix->height, &pix->pixelformat, 295 prt_names(pix->field, v4l2_field_names), 296 pix->bytesperline, pix->sizeimage, 297 pix->colorspace, pix->flags, pix->ycbcr_enc, 298 pix->quantization, pix->xfer_func); 299 break; 300 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 301 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 302 mp = &p->fmt.pix_mp; 303 pixelformat = mp->pixelformat; 304 pr_cont(", width=%u, height=%u, format=%p4cc, field=%s, colorspace=%d, num_planes=%u, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n", 305 mp->width, mp->height, &pixelformat, 306 prt_names(mp->field, v4l2_field_names), 307 mp->colorspace, mp->num_planes, mp->flags, 308 mp->ycbcr_enc, mp->quantization, mp->xfer_func); 309 planes = min_t(u32, mp->num_planes, VIDEO_MAX_PLANES); 310 for (i = 0; i < planes; i++) 311 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i, 312 mp->plane_fmt[i].bytesperline, 313 mp->plane_fmt[i].sizeimage); 314 break; 315 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 316 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 317 win = &p->fmt.win; 318 /* Note: we can't print the clip list here since the clips 319 * pointer is a userspace pointer, not a kernelspace 320 * pointer. */ 321 pr_cont(", wxh=%dx%d, x,y=%d,%d, field=%s, chromakey=0x%08x, clipcount=%u, clips=%p, bitmap=%p, global_alpha=0x%02x\n", 322 win->w.width, win->w.height, win->w.left, win->w.top, 323 prt_names(win->field, v4l2_field_names), 324 win->chromakey, win->clipcount, win->clips, 325 win->bitmap, win->global_alpha); 326 break; 327 case V4L2_BUF_TYPE_VBI_CAPTURE: 328 case V4L2_BUF_TYPE_VBI_OUTPUT: 329 vbi = &p->fmt.vbi; 330 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%p4cc, start=%u,%u, count=%u,%u\n", 331 vbi->sampling_rate, vbi->offset, 332 vbi->samples_per_line, &vbi->sample_format, 333 vbi->start[0], vbi->start[1], 334 vbi->count[0], vbi->count[1]); 335 break; 336 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 337 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 338 sliced = &p->fmt.sliced; 339 pr_cont(", service_set=0x%08x, io_size=%d\n", 340 sliced->service_set, sliced->io_size); 341 for (i = 0; i < 24; i++) 342 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, 343 sliced->service_lines[0][i], 344 sliced->service_lines[1][i]); 345 break; 346 case V4L2_BUF_TYPE_SDR_CAPTURE: 347 case V4L2_BUF_TYPE_SDR_OUTPUT: 348 pixelformat = p->fmt.sdr.pixelformat; 349 pr_cont(", pixelformat=%p4cc\n", &pixelformat); 350 break; 351 case V4L2_BUF_TYPE_META_CAPTURE: 352 case V4L2_BUF_TYPE_META_OUTPUT: 353 meta = &p->fmt.meta; 354 pixelformat = meta->dataformat; 355 pr_cont(", dataformat=%p4cc, buffersize=%u\n", 356 &pixelformat, meta->buffersize); 357 break; 358 } 359 } 360 361 static void v4l_print_framebuffer(const void *arg, bool write_only) 362 { 363 const struct v4l2_framebuffer *p = arg; 364 365 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, height=%u, pixelformat=%p4cc, bytesperline=%u, sizeimage=%u, colorspace=%d\n", 366 p->capability, p->flags, p->base, p->fmt.width, p->fmt.height, 367 &p->fmt.pixelformat, p->fmt.bytesperline, p->fmt.sizeimage, 368 p->fmt.colorspace); 369 } 370 371 static void v4l_print_buftype(const void *arg, bool write_only) 372 { 373 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names)); 374 } 375 376 static void v4l_print_modulator(const void *arg, bool write_only) 377 { 378 const struct v4l2_modulator *p = arg; 379 380 if (write_only) 381 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans); 382 else 383 pr_cont("index=%u, name=%.*s, capability=0x%x, rangelow=%u, rangehigh=%u, txsubchans=0x%x\n", 384 p->index, (int)sizeof(p->name), p->name, p->capability, 385 p->rangelow, p->rangehigh, p->txsubchans); 386 } 387 388 static void v4l_print_tuner(const void *arg, bool write_only) 389 { 390 const struct v4l2_tuner *p = arg; 391 392 if (write_only) 393 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode); 394 else 395 pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, rangelow=%u, rangehigh=%u, signal=%u, afc=%d, rxsubchans=0x%x, audmode=%u\n", 396 p->index, (int)sizeof(p->name), p->name, p->type, 397 p->capability, p->rangelow, 398 p->rangehigh, p->signal, p->afc, 399 p->rxsubchans, p->audmode); 400 } 401 402 static void v4l_print_frequency(const void *arg, bool write_only) 403 { 404 const struct v4l2_frequency *p = arg; 405 406 pr_cont("tuner=%u, type=%u, frequency=%u\n", 407 p->tuner, p->type, p->frequency); 408 } 409 410 static void v4l_print_standard(const void *arg, bool write_only) 411 { 412 const struct v4l2_standard *p = arg; 413 414 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, framelines=%u\n", 415 p->index, 416 (unsigned long long)p->id, (int)sizeof(p->name), p->name, 417 p->frameperiod.numerator, 418 p->frameperiod.denominator, 419 p->framelines); 420 } 421 422 static void v4l_print_std(const void *arg, bool write_only) 423 { 424 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg); 425 } 426 427 static void v4l_print_hw_freq_seek(const void *arg, bool write_only) 428 { 429 const struct v4l2_hw_freq_seek *p = arg; 430 431 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, rangelow=%u, rangehigh=%u\n", 432 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing, 433 p->rangelow, p->rangehigh); 434 } 435 436 static void v4l_print_requestbuffers(const void *arg, bool write_only) 437 { 438 const struct v4l2_requestbuffers *p = arg; 439 440 pr_cont("count=%d, type=%s, memory=%s\n", 441 p->count, 442 prt_names(p->type, v4l2_type_names), 443 prt_names(p->memory, v4l2_memory_names)); 444 } 445 446 static void v4l_print_buffer(const void *arg, bool write_only) 447 { 448 const struct v4l2_buffer *p = arg; 449 const struct v4l2_timecode *tc = &p->timecode; 450 const struct v4l2_plane *plane; 451 int i; 452 453 pr_cont("%02d:%02d:%02d.%06ld index=%d, type=%s, request_fd=%d, flags=0x%08x, field=%s, sequence=%d, memory=%s", 454 (int)p->timestamp.tv_sec / 3600, 455 ((int)p->timestamp.tv_sec / 60) % 60, 456 ((int)p->timestamp.tv_sec % 60), 457 (long)p->timestamp.tv_usec, 458 p->index, 459 prt_names(p->type, v4l2_type_names), p->request_fd, 460 p->flags, prt_names(p->field, v4l2_field_names), 461 p->sequence, prt_names(p->memory, v4l2_memory_names)); 462 463 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) { 464 pr_cont("\n"); 465 for (i = 0; i < p->length; ++i) { 466 plane = &p->m.planes[i]; 467 printk(KERN_DEBUG 468 "plane %d: bytesused=%d, data_offset=0x%08x, offset/userptr=0x%lx, length=%d\n", 469 i, plane->bytesused, plane->data_offset, 470 plane->m.userptr, plane->length); 471 } 472 } else { 473 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n", 474 p->bytesused, p->m.userptr, p->length); 475 } 476 477 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, flags=0x%08x, frames=%d, userbits=0x%08x\n", 478 tc->hours, tc->minutes, tc->seconds, 479 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits); 480 } 481 482 static void v4l_print_exportbuffer(const void *arg, bool write_only) 483 { 484 const struct v4l2_exportbuffer *p = arg; 485 486 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n", 487 p->fd, prt_names(p->type, v4l2_type_names), 488 p->index, p->plane, p->flags); 489 } 490 491 static void v4l_print_create_buffers(const void *arg, bool write_only) 492 { 493 const struct v4l2_create_buffers *p = arg; 494 495 pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, ", 496 p->index, p->count, prt_names(p->memory, v4l2_memory_names), 497 p->capabilities); 498 v4l_print_format(&p->format, write_only); 499 } 500 501 static void v4l_print_streamparm(const void *arg, bool write_only) 502 { 503 const struct v4l2_streamparm *p = arg; 504 505 pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); 506 507 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 508 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) { 509 const struct v4l2_captureparm *c = &p->parm.capture; 510 511 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, extendedmode=%d, readbuffers=%d\n", 512 c->capability, c->capturemode, 513 c->timeperframe.numerator, c->timeperframe.denominator, 514 c->extendedmode, c->readbuffers); 515 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT || 516 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { 517 const struct v4l2_outputparm *c = &p->parm.output; 518 519 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, extendedmode=%d, writebuffers=%d\n", 520 c->capability, c->outputmode, 521 c->timeperframe.numerator, c->timeperframe.denominator, 522 c->extendedmode, c->writebuffers); 523 } else { 524 pr_cont("\n"); 525 } 526 } 527 528 static void v4l_print_queryctrl(const void *arg, bool write_only) 529 { 530 const struct v4l2_queryctrl *p = arg; 531 532 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, step=%d, default=%d, flags=0x%08x\n", 533 p->id, p->type, (int)sizeof(p->name), p->name, 534 p->minimum, p->maximum, 535 p->step, p->default_value, p->flags); 536 } 537 538 static void v4l_print_query_ext_ctrl(const void *arg, bool write_only) 539 { 540 const struct v4l2_query_ext_ctrl *p = arg; 541 542 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%lld/%lld, step=%lld, default=%lld, flags=0x%08x, elem_size=%u, elems=%u, nr_of_dims=%u, dims=%u,%u,%u,%u\n", 543 p->id, p->type, (int)sizeof(p->name), p->name, 544 p->minimum, p->maximum, 545 p->step, p->default_value, p->flags, 546 p->elem_size, p->elems, p->nr_of_dims, 547 p->dims[0], p->dims[1], p->dims[2], p->dims[3]); 548 } 549 550 static void v4l_print_querymenu(const void *arg, bool write_only) 551 { 552 const struct v4l2_querymenu *p = arg; 553 554 pr_cont("id=0x%x, index=%d\n", p->id, p->index); 555 } 556 557 static void v4l_print_control(const void *arg, bool write_only) 558 { 559 const struct v4l2_control *p = arg; 560 const char *name = v4l2_ctrl_get_name(p->id); 561 562 if (name) 563 pr_cont("name=%s, ", name); 564 pr_cont("id=0x%x, value=%d\n", p->id, p->value); 565 } 566 567 static void v4l_print_ext_controls(const void *arg, bool write_only) 568 { 569 const struct v4l2_ext_controls *p = arg; 570 int i; 571 572 pr_cont("which=0x%x, count=%d, error_idx=%d, request_fd=%d", 573 p->which, p->count, p->error_idx, p->request_fd); 574 for (i = 0; i < p->count; i++) { 575 unsigned int id = p->controls[i].id; 576 const char *name = v4l2_ctrl_get_name(id); 577 578 if (name) 579 pr_cont(", name=%s", name); 580 if (!p->controls[i].size) 581 pr_cont(", id/val=0x%x/0x%x", id, p->controls[i].value); 582 else 583 pr_cont(", id/size=0x%x/%u", id, p->controls[i].size); 584 } 585 pr_cont("\n"); 586 } 587 588 static void v4l_print_cropcap(const void *arg, bool write_only) 589 { 590 const struct v4l2_cropcap *p = arg; 591 592 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, defrect wxh=%dx%d, x,y=%d,%d, pixelaspect %d/%d\n", 593 prt_names(p->type, v4l2_type_names), 594 p->bounds.width, p->bounds.height, 595 p->bounds.left, p->bounds.top, 596 p->defrect.width, p->defrect.height, 597 p->defrect.left, p->defrect.top, 598 p->pixelaspect.numerator, p->pixelaspect.denominator); 599 } 600 601 static void v4l_print_crop(const void *arg, bool write_only) 602 { 603 const struct v4l2_crop *p = arg; 604 605 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n", 606 prt_names(p->type, v4l2_type_names), 607 p->c.width, p->c.height, 608 p->c.left, p->c.top); 609 } 610 611 static void v4l_print_selection(const void *arg, bool write_only) 612 { 613 const struct v4l2_selection *p = arg; 614 615 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n", 616 prt_names(p->type, v4l2_type_names), 617 p->target, p->flags, 618 p->r.width, p->r.height, p->r.left, p->r.top); 619 } 620 621 static void v4l_print_jpegcompression(const void *arg, bool write_only) 622 { 623 const struct v4l2_jpegcompression *p = arg; 624 625 pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n", 626 p->quality, p->APPn, p->APP_len, 627 p->COM_len, p->jpeg_markers); 628 } 629 630 static void v4l_print_enc_idx(const void *arg, bool write_only) 631 { 632 const struct v4l2_enc_idx *p = arg; 633 634 pr_cont("entries=%d, entries_cap=%d\n", 635 p->entries, p->entries_cap); 636 } 637 638 static void v4l_print_encoder_cmd(const void *arg, bool write_only) 639 { 640 const struct v4l2_encoder_cmd *p = arg; 641 642 pr_cont("cmd=%d, flags=0x%x\n", 643 p->cmd, p->flags); 644 } 645 646 static void v4l_print_decoder_cmd(const void *arg, bool write_only) 647 { 648 const struct v4l2_decoder_cmd *p = arg; 649 650 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags); 651 652 if (p->cmd == V4L2_DEC_CMD_START) 653 pr_info("speed=%d, format=%u\n", 654 p->start.speed, p->start.format); 655 else if (p->cmd == V4L2_DEC_CMD_STOP) 656 pr_info("pts=%llu\n", p->stop.pts); 657 } 658 659 static void v4l_print_dbg_chip_info(const void *arg, bool write_only) 660 { 661 const struct v4l2_dbg_chip_info *p = arg; 662 663 pr_cont("type=%u, ", p->match.type); 664 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 665 pr_cont("name=%.*s, ", 666 (int)sizeof(p->match.name), p->match.name); 667 else 668 pr_cont("addr=%u, ", p->match.addr); 669 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name); 670 } 671 672 static void v4l_print_dbg_register(const void *arg, bool write_only) 673 { 674 const struct v4l2_dbg_register *p = arg; 675 676 pr_cont("type=%u, ", p->match.type); 677 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 678 pr_cont("name=%.*s, ", 679 (int)sizeof(p->match.name), p->match.name); 680 else 681 pr_cont("addr=%u, ", p->match.addr); 682 pr_cont("reg=0x%llx, val=0x%llx\n", 683 p->reg, p->val); 684 } 685 686 static void v4l_print_dv_timings(const void *arg, bool write_only) 687 { 688 const struct v4l2_dv_timings *p = arg; 689 690 switch (p->type) { 691 case V4L2_DV_BT_656_1120: 692 pr_cont("type=bt-656/1120, interlaced=%u, pixelclock=%llu, width=%u, height=%u, polarities=0x%x, hfrontporch=%u, hsync=%u, hbackporch=%u, vfrontporch=%u, vsync=%u, vbackporch=%u, il_vfrontporch=%u, il_vsync=%u, il_vbackporch=%u, standards=0x%x, flags=0x%x\n", 693 p->bt.interlaced, p->bt.pixelclock, 694 p->bt.width, p->bt.height, 695 p->bt.polarities, p->bt.hfrontporch, 696 p->bt.hsync, p->bt.hbackporch, 697 p->bt.vfrontporch, p->bt.vsync, 698 p->bt.vbackporch, p->bt.il_vfrontporch, 699 p->bt.il_vsync, p->bt.il_vbackporch, 700 p->bt.standards, p->bt.flags); 701 break; 702 default: 703 pr_cont("type=%d\n", p->type); 704 break; 705 } 706 } 707 708 static void v4l_print_enum_dv_timings(const void *arg, bool write_only) 709 { 710 const struct v4l2_enum_dv_timings *p = arg; 711 712 pr_cont("index=%u, ", p->index); 713 v4l_print_dv_timings(&p->timings, write_only); 714 } 715 716 static void v4l_print_dv_timings_cap(const void *arg, bool write_only) 717 { 718 const struct v4l2_dv_timings_cap *p = arg; 719 720 switch (p->type) { 721 case V4L2_DV_BT_656_1120: 722 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n", 723 p->bt.min_width, p->bt.max_width, 724 p->bt.min_height, p->bt.max_height, 725 p->bt.min_pixelclock, p->bt.max_pixelclock, 726 p->bt.standards, p->bt.capabilities); 727 break; 728 default: 729 pr_cont("type=%u\n", p->type); 730 break; 731 } 732 } 733 734 static void v4l_print_frmsizeenum(const void *arg, bool write_only) 735 { 736 const struct v4l2_frmsizeenum *p = arg; 737 738 pr_cont("index=%u, pixelformat=%p4cc, type=%u", 739 p->index, &p->pixel_format, p->type); 740 switch (p->type) { 741 case V4L2_FRMSIZE_TYPE_DISCRETE: 742 pr_cont(", wxh=%ux%u\n", 743 p->discrete.width, p->discrete.height); 744 break; 745 case V4L2_FRMSIZE_TYPE_STEPWISE: 746 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n", 747 p->stepwise.min_width, 748 p->stepwise.min_height, 749 p->stepwise.max_width, 750 p->stepwise.max_height, 751 p->stepwise.step_width, 752 p->stepwise.step_height); 753 break; 754 case V4L2_FRMSIZE_TYPE_CONTINUOUS: 755 default: 756 pr_cont("\n"); 757 break; 758 } 759 } 760 761 static void v4l_print_frmivalenum(const void *arg, bool write_only) 762 { 763 const struct v4l2_frmivalenum *p = arg; 764 765 pr_cont("index=%u, pixelformat=%p4cc, wxh=%ux%u, type=%u", 766 p->index, &p->pixel_format, p->width, p->height, p->type); 767 switch (p->type) { 768 case V4L2_FRMIVAL_TYPE_DISCRETE: 769 pr_cont(", fps=%d/%d\n", 770 p->discrete.numerator, 771 p->discrete.denominator); 772 break; 773 case V4L2_FRMIVAL_TYPE_STEPWISE: 774 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n", 775 p->stepwise.min.numerator, 776 p->stepwise.min.denominator, 777 p->stepwise.max.numerator, 778 p->stepwise.max.denominator, 779 p->stepwise.step.numerator, 780 p->stepwise.step.denominator); 781 break; 782 case V4L2_FRMIVAL_TYPE_CONTINUOUS: 783 default: 784 pr_cont("\n"); 785 break; 786 } 787 } 788 789 static void v4l_print_event(const void *arg, bool write_only) 790 { 791 const struct v4l2_event *p = arg; 792 const struct v4l2_event_ctrl *c; 793 794 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%llu.%9.9llu\n", 795 p->type, p->pending, p->sequence, p->id, 796 p->timestamp.tv_sec, p->timestamp.tv_nsec); 797 switch (p->type) { 798 case V4L2_EVENT_VSYNC: 799 printk(KERN_DEBUG "field=%s\n", 800 prt_names(p->u.vsync.field, v4l2_field_names)); 801 break; 802 case V4L2_EVENT_CTRL: 803 c = &p->u.ctrl; 804 printk(KERN_DEBUG "changes=0x%x, type=%u, ", 805 c->changes, c->type); 806 if (c->type == V4L2_CTRL_TYPE_INTEGER64) 807 pr_cont("value64=%lld, ", c->value64); 808 else 809 pr_cont("value=%d, ", c->value); 810 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n", 811 c->flags, c->minimum, c->maximum, 812 c->step, c->default_value); 813 break; 814 case V4L2_EVENT_FRAME_SYNC: 815 pr_cont("frame_sequence=%u\n", 816 p->u.frame_sync.frame_sequence); 817 break; 818 } 819 } 820 821 static void v4l_print_event_subscription(const void *arg, bool write_only) 822 { 823 const struct v4l2_event_subscription *p = arg; 824 825 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n", 826 p->type, p->id, p->flags); 827 } 828 829 static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only) 830 { 831 const struct v4l2_sliced_vbi_cap *p = arg; 832 int i; 833 834 pr_cont("type=%s, service_set=0x%08x\n", 835 prt_names(p->type, v4l2_type_names), p->service_set); 836 for (i = 0; i < 24; i++) 837 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, 838 p->service_lines[0][i], 839 p->service_lines[1][i]); 840 } 841 842 static void v4l_print_freq_band(const void *arg, bool write_only) 843 { 844 const struct v4l2_frequency_band *p = arg; 845 846 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n", 847 p->tuner, p->type, p->index, 848 p->capability, p->rangelow, 849 p->rangehigh, p->modulation); 850 } 851 852 static void v4l_print_edid(const void *arg, bool write_only) 853 { 854 const struct v4l2_edid *p = arg; 855 856 pr_cont("pad=%u, start_block=%u, blocks=%u\n", 857 p->pad, p->start_block, p->blocks); 858 } 859 860 static void v4l_print_u32(const void *arg, bool write_only) 861 { 862 pr_cont("value=%u\n", *(const u32 *)arg); 863 } 864 865 static void v4l_print_newline(const void *arg, bool write_only) 866 { 867 pr_cont("\n"); 868 } 869 870 static void v4l_print_default(const void *arg, bool write_only) 871 { 872 pr_cont("driver-specific ioctl\n"); 873 } 874 875 static bool check_ext_ctrls(struct v4l2_ext_controls *c, unsigned long ioctl) 876 { 877 __u32 i; 878 879 /* zero the reserved fields */ 880 c->reserved[0] = 0; 881 for (i = 0; i < c->count; i++) 882 c->controls[i].reserved2[0] = 0; 883 884 switch (c->which) { 885 case V4L2_CID_PRIVATE_BASE: 886 /* 887 * V4L2_CID_PRIVATE_BASE cannot be used as control class 888 * when using extended controls. 889 * Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL 890 * is it allowed for backwards compatibility. 891 */ 892 if (ioctl == VIDIOC_G_CTRL || ioctl == VIDIOC_S_CTRL) 893 return false; 894 break; 895 case V4L2_CTRL_WHICH_DEF_VAL: 896 /* Default value cannot be changed */ 897 if (ioctl == VIDIOC_S_EXT_CTRLS || 898 ioctl == VIDIOC_TRY_EXT_CTRLS) { 899 c->error_idx = c->count; 900 return false; 901 } 902 return true; 903 case V4L2_CTRL_WHICH_CUR_VAL: 904 return true; 905 case V4L2_CTRL_WHICH_REQUEST_VAL: 906 c->error_idx = c->count; 907 return false; 908 } 909 910 /* Check that all controls are from the same control class. */ 911 for (i = 0; i < c->count; i++) { 912 if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) { 913 c->error_idx = ioctl == VIDIOC_TRY_EXT_CTRLS ? i : 914 c->count; 915 return false; 916 } 917 } 918 return true; 919 } 920 921 static int check_fmt(struct file *file, enum v4l2_buf_type type) 922 { 923 const u32 vid_caps = V4L2_CAP_VIDEO_CAPTURE | 924 V4L2_CAP_VIDEO_CAPTURE_MPLANE | 925 V4L2_CAP_VIDEO_OUTPUT | 926 V4L2_CAP_VIDEO_OUTPUT_MPLANE | 927 V4L2_CAP_VIDEO_M2M | V4L2_CAP_VIDEO_M2M_MPLANE; 928 const u32 meta_caps = V4L2_CAP_META_CAPTURE | 929 V4L2_CAP_META_OUTPUT; 930 struct video_device *vfd = video_devdata(file); 931 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 932 bool is_vid = vfd->vfl_type == VFL_TYPE_VIDEO && 933 (vfd->device_caps & vid_caps); 934 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI; 935 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; 936 bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; 937 bool is_meta = vfd->vfl_type == VFL_TYPE_VIDEO && 938 (vfd->device_caps & meta_caps); 939 bool is_rx = vfd->vfl_dir != VFL_DIR_TX; 940 bool is_tx = vfd->vfl_dir != VFL_DIR_RX; 941 942 if (ops == NULL) 943 return -EINVAL; 944 945 switch (type) { 946 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 947 if ((is_vid || is_tch) && is_rx && 948 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane)) 949 return 0; 950 break; 951 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 952 if ((is_vid || is_tch) && is_rx && ops->vidioc_g_fmt_vid_cap_mplane) 953 return 0; 954 break; 955 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 956 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay) 957 return 0; 958 break; 959 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 960 if (is_vid && is_tx && 961 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane)) 962 return 0; 963 break; 964 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 965 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane) 966 return 0; 967 break; 968 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 969 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay) 970 return 0; 971 break; 972 case V4L2_BUF_TYPE_VBI_CAPTURE: 973 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap) 974 return 0; 975 break; 976 case V4L2_BUF_TYPE_VBI_OUTPUT: 977 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out) 978 return 0; 979 break; 980 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 981 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap) 982 return 0; 983 break; 984 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 985 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out) 986 return 0; 987 break; 988 case V4L2_BUF_TYPE_SDR_CAPTURE: 989 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap) 990 return 0; 991 break; 992 case V4L2_BUF_TYPE_SDR_OUTPUT: 993 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out) 994 return 0; 995 break; 996 case V4L2_BUF_TYPE_META_CAPTURE: 997 if (is_meta && is_rx && ops->vidioc_g_fmt_meta_cap) 998 return 0; 999 break; 1000 case V4L2_BUF_TYPE_META_OUTPUT: 1001 if (is_meta && is_tx && ops->vidioc_g_fmt_meta_out) 1002 return 0; 1003 break; 1004 default: 1005 break; 1006 } 1007 return -EINVAL; 1008 } 1009 1010 static void v4l_sanitize_colorspace(u32 pixelformat, u32 *colorspace, 1011 u32 *encoding, u32 *quantization, 1012 u32 *xfer_func) 1013 { 1014 bool is_hsv = pixelformat == V4L2_PIX_FMT_HSV24 || 1015 pixelformat == V4L2_PIX_FMT_HSV32; 1016 1017 if (!v4l2_is_colorspace_valid(*colorspace)) { 1018 *colorspace = V4L2_COLORSPACE_DEFAULT; 1019 *encoding = V4L2_YCBCR_ENC_DEFAULT; 1020 *quantization = V4L2_QUANTIZATION_DEFAULT; 1021 *xfer_func = V4L2_XFER_FUNC_DEFAULT; 1022 } 1023 1024 if ((!is_hsv && !v4l2_is_ycbcr_enc_valid(*encoding)) || 1025 (is_hsv && !v4l2_is_hsv_enc_valid(*encoding))) 1026 *encoding = V4L2_YCBCR_ENC_DEFAULT; 1027 1028 if (!v4l2_is_quant_valid(*quantization)) 1029 *quantization = V4L2_QUANTIZATION_DEFAULT; 1030 1031 if (!v4l2_is_xfer_func_valid(*xfer_func)) 1032 *xfer_func = V4L2_XFER_FUNC_DEFAULT; 1033 } 1034 1035 static void v4l_sanitize_format(struct v4l2_format *fmt) 1036 { 1037 unsigned int offset; 1038 1039 /* Make sure num_planes is not bogus */ 1040 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE || 1041 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 1042 fmt->fmt.pix_mp.num_planes = min_t(u32, fmt->fmt.pix_mp.num_planes, 1043 VIDEO_MAX_PLANES); 1044 1045 /* 1046 * The v4l2_pix_format structure has been extended with fields that were 1047 * not previously required to be set to zero by applications. The priv 1048 * field, when set to a magic value, indicates that the extended fields 1049 * are valid. Otherwise they will contain undefined values. To simplify 1050 * the API towards drivers zero the extended fields and set the priv 1051 * field to the magic value when the extended pixel format structure 1052 * isn't used by applications. 1053 */ 1054 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 1055 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { 1056 if (fmt->fmt.pix.priv != V4L2_PIX_FMT_PRIV_MAGIC) { 1057 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1058 1059 offset = offsetof(struct v4l2_pix_format, priv) 1060 + sizeof(fmt->fmt.pix.priv); 1061 memset(((void *)&fmt->fmt.pix) + offset, 0, 1062 sizeof(fmt->fmt.pix) - offset); 1063 } 1064 } 1065 1066 /* Replace invalid colorspace values with defaults. */ 1067 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 1068 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { 1069 v4l_sanitize_colorspace(fmt->fmt.pix.pixelformat, 1070 &fmt->fmt.pix.colorspace, 1071 &fmt->fmt.pix.ycbcr_enc, 1072 &fmt->fmt.pix.quantization, 1073 &fmt->fmt.pix.xfer_func); 1074 } else if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE || 1075 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { 1076 u32 ycbcr_enc = fmt->fmt.pix_mp.ycbcr_enc; 1077 u32 quantization = fmt->fmt.pix_mp.quantization; 1078 u32 xfer_func = fmt->fmt.pix_mp.xfer_func; 1079 1080 v4l_sanitize_colorspace(fmt->fmt.pix_mp.pixelformat, 1081 &fmt->fmt.pix_mp.colorspace, &ycbcr_enc, 1082 &quantization, &xfer_func); 1083 1084 fmt->fmt.pix_mp.ycbcr_enc = ycbcr_enc; 1085 fmt->fmt.pix_mp.quantization = quantization; 1086 fmt->fmt.pix_mp.xfer_func = xfer_func; 1087 } 1088 } 1089 1090 static int v4l_querycap(const struct v4l2_ioctl_ops *ops, 1091 struct file *file, void *fh, void *arg) 1092 { 1093 struct v4l2_capability *cap = (struct v4l2_capability *)arg; 1094 struct video_device *vfd = video_devdata(file); 1095 int ret; 1096 1097 cap->version = LINUX_VERSION_CODE; 1098 cap->device_caps = vfd->device_caps; 1099 cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS; 1100 1101 media_set_bus_info(cap->bus_info, sizeof(cap->bus_info), 1102 vfd->dev_parent); 1103 1104 ret = ops->vidioc_querycap(file, fh, cap); 1105 1106 /* 1107 * Drivers must not change device_caps, so check for this and 1108 * warn if this happened. 1109 */ 1110 WARN_ON(cap->device_caps != vfd->device_caps); 1111 /* 1112 * Check that capabilities is a superset of 1113 * vfd->device_caps | V4L2_CAP_DEVICE_CAPS 1114 */ 1115 WARN_ON((cap->capabilities & 1116 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)) != 1117 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)); 1118 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT; 1119 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT; 1120 1121 return ret; 1122 } 1123 1124 static int v4l_g_input(const struct v4l2_ioctl_ops *ops, 1125 struct file *file, void *fh, void *arg) 1126 { 1127 struct video_device *vfd = video_devdata(file); 1128 1129 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1130 *(int *)arg = 0; 1131 return 0; 1132 } 1133 1134 return ops->vidioc_g_input(file, fh, arg); 1135 } 1136 1137 static int v4l_g_output(const struct v4l2_ioctl_ops *ops, 1138 struct file *file, void *fh, void *arg) 1139 { 1140 struct video_device *vfd = video_devdata(file); 1141 1142 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1143 *(int *)arg = 0; 1144 return 0; 1145 } 1146 1147 return ops->vidioc_g_output(file, fh, arg); 1148 } 1149 1150 static int v4l_s_input(const struct v4l2_ioctl_ops *ops, 1151 struct file *file, void *fh, void *arg) 1152 { 1153 struct video_device *vfd = video_devdata(file); 1154 int ret; 1155 1156 ret = v4l_enable_media_source(vfd); 1157 if (ret) 1158 return ret; 1159 1160 if (vfd->device_caps & V4L2_CAP_IO_MC) 1161 return *(int *)arg ? -EINVAL : 0; 1162 1163 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg); 1164 } 1165 1166 static int v4l_s_output(const struct v4l2_ioctl_ops *ops, 1167 struct file *file, void *fh, void *arg) 1168 { 1169 struct video_device *vfd = video_devdata(file); 1170 1171 if (vfd->device_caps & V4L2_CAP_IO_MC) 1172 return *(int *)arg ? -EINVAL : 0; 1173 1174 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg); 1175 } 1176 1177 static int v4l_g_priority(const struct v4l2_ioctl_ops *ops, 1178 struct file *file, void *fh, void *arg) 1179 { 1180 struct video_device *vfd; 1181 u32 *p = arg; 1182 1183 vfd = video_devdata(file); 1184 *p = v4l2_prio_max(vfd->prio); 1185 return 0; 1186 } 1187 1188 static int v4l_s_priority(const struct v4l2_ioctl_ops *ops, 1189 struct file *file, void *fh, void *arg) 1190 { 1191 struct video_device *vfd; 1192 struct v4l2_fh *vfh; 1193 u32 *p = arg; 1194 1195 vfd = video_devdata(file); 1196 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 1197 return -ENOTTY; 1198 vfh = file->private_data; 1199 return v4l2_prio_change(vfd->prio, &vfh->prio, *p); 1200 } 1201 1202 static int v4l_enuminput(const struct v4l2_ioctl_ops *ops, 1203 struct file *file, void *fh, void *arg) 1204 { 1205 struct video_device *vfd = video_devdata(file); 1206 struct v4l2_input *p = arg; 1207 1208 /* 1209 * We set the flags for CAP_DV_TIMINGS & 1210 * CAP_STD here based on ioctl handler provided by the 1211 * driver. If the driver doesn't support these 1212 * for a specific input, it must override these flags. 1213 */ 1214 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1215 p->capabilities |= V4L2_IN_CAP_STD; 1216 1217 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1218 if (p->index) 1219 return -EINVAL; 1220 strscpy(p->name, vfd->name, sizeof(p->name)); 1221 p->type = V4L2_INPUT_TYPE_CAMERA; 1222 return 0; 1223 } 1224 1225 return ops->vidioc_enum_input(file, fh, p); 1226 } 1227 1228 static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops, 1229 struct file *file, void *fh, void *arg) 1230 { 1231 struct video_device *vfd = video_devdata(file); 1232 struct v4l2_output *p = arg; 1233 1234 /* 1235 * We set the flags for CAP_DV_TIMINGS & 1236 * CAP_STD here based on ioctl handler provided by the 1237 * driver. If the driver doesn't support these 1238 * for a specific output, it must override these flags. 1239 */ 1240 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1241 p->capabilities |= V4L2_OUT_CAP_STD; 1242 1243 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1244 if (p->index) 1245 return -EINVAL; 1246 strscpy(p->name, vfd->name, sizeof(p->name)); 1247 p->type = V4L2_OUTPUT_TYPE_ANALOG; 1248 return 0; 1249 } 1250 1251 return ops->vidioc_enum_output(file, fh, p); 1252 } 1253 1254 static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) 1255 { 1256 const unsigned sz = sizeof(fmt->description); 1257 const char *descr = NULL; 1258 u32 flags = 0; 1259 1260 /* 1261 * We depart from the normal coding style here since the descriptions 1262 * should be aligned so it is easy to see which descriptions will be 1263 * longer than 31 characters (the max length for a description). 1264 * And frankly, this is easier to read anyway. 1265 * 1266 * Note that gcc will use O(log N) comparisons to find the right case. 1267 */ 1268 switch (fmt->pixelformat) { 1269 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1270 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break; 1271 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break; 1272 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break; 1273 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break; 1274 case V4L2_PIX_FMT_RGBA444: descr = "16-bit RGBA 4-4-4-4"; break; 1275 case V4L2_PIX_FMT_RGBX444: descr = "16-bit RGBX 4-4-4-4"; break; 1276 case V4L2_PIX_FMT_ABGR444: descr = "16-bit ABGR 4-4-4-4"; break; 1277 case V4L2_PIX_FMT_XBGR444: descr = "16-bit XBGR 4-4-4-4"; break; 1278 case V4L2_PIX_FMT_BGRA444: descr = "16-bit BGRA 4-4-4-4"; break; 1279 case V4L2_PIX_FMT_BGRX444: descr = "16-bit BGRX 4-4-4-4"; break; 1280 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break; 1281 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break; 1282 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break; 1283 case V4L2_PIX_FMT_ABGR555: descr = "16-bit ABGR 1-5-5-5"; break; 1284 case V4L2_PIX_FMT_XBGR555: descr = "16-bit XBGR 1-5-5-5"; break; 1285 case V4L2_PIX_FMT_RGBA555: descr = "16-bit RGBA 5-5-5-1"; break; 1286 case V4L2_PIX_FMT_RGBX555: descr = "16-bit RGBX 5-5-5-1"; break; 1287 case V4L2_PIX_FMT_BGRA555: descr = "16-bit BGRA 5-5-5-1"; break; 1288 case V4L2_PIX_FMT_BGRX555: descr = "16-bit BGRX 5-5-5-1"; break; 1289 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break; 1290 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break; 1291 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break; 1292 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break; 1293 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break; 1294 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break; 1295 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break; 1296 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break; 1297 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break; 1298 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break; 1299 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break; 1300 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break; 1301 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break; 1302 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break; 1303 case V4L2_PIX_FMT_BGRA32: descr = "32-bit ABGR 8-8-8-8"; break; 1304 case V4L2_PIX_FMT_BGRX32: descr = "32-bit XBGR 8-8-8-8"; break; 1305 case V4L2_PIX_FMT_RGBA32: descr = "32-bit RGBA 8-8-8-8"; break; 1306 case V4L2_PIX_FMT_RGBX32: descr = "32-bit RGBX 8-8-8-8"; break; 1307 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break; 1308 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break; 1309 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break; 1310 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break; 1311 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break; 1312 case V4L2_PIX_FMT_Y14: descr = "14-bit Greyscale"; break; 1313 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break; 1314 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break; 1315 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break; 1316 case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break; 1317 case V4L2_PIX_FMT_IPU3_Y10: descr = "10-bit greyscale (IPU3 Packed)"; break; 1318 case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break; 1319 case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break; 1320 case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break; 1321 case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break; 1322 case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break; 1323 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break; 1324 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break; 1325 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break; 1326 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break; 1327 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break; 1328 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break; 1329 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break; 1330 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break; 1331 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break; 1332 case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break; 1333 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break; 1334 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break; 1335 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break; 1336 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break; 1337 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break; 1338 case V4L2_PIX_FMT_YUV24: descr = "24-bit YUV 4:4:4 8-8-8"; break; 1339 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break; 1340 case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break; 1341 case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break; 1342 case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break; 1343 case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break; 1344 case V4L2_PIX_FMT_YUVA32: descr = "32-bit YUVA 8-8-8-8"; break; 1345 case V4L2_PIX_FMT_YUVX32: descr = "32-bit YUVX 8-8-8-8"; break; 1346 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break; 1347 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break; 1348 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break; 1349 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break; 1350 case V4L2_PIX_FMT_NV12: descr = "Y/UV 4:2:0"; break; 1351 case V4L2_PIX_FMT_NV21: descr = "Y/VU 4:2:0"; break; 1352 case V4L2_PIX_FMT_NV16: descr = "Y/UV 4:2:2"; break; 1353 case V4L2_PIX_FMT_NV61: descr = "Y/VU 4:2:2"; break; 1354 case V4L2_PIX_FMT_NV24: descr = "Y/UV 4:4:4"; break; 1355 case V4L2_PIX_FMT_NV42: descr = "Y/VU 4:4:4"; break; 1356 case V4L2_PIX_FMT_P010: descr = "10-bit Y/UV 4:2:0"; break; 1357 case V4L2_PIX_FMT_NV12_4L4: descr = "Y/UV 4:2:0 (4x4 Linear)"; break; 1358 case V4L2_PIX_FMT_NV12_16L16: descr = "Y/UV 4:2:0 (16x16 Linear)"; break; 1359 case V4L2_PIX_FMT_NV12_32L32: descr = "Y/UV 4:2:0 (32x32 Linear)"; break; 1360 case V4L2_PIX_FMT_P010_4L4: descr = "10-bit Y/UV 4:2:0 (4x4 Linear)"; break; 1361 case V4L2_PIX_FMT_NV12M: descr = "Y/UV 4:2:0 (N-C)"; break; 1362 case V4L2_PIX_FMT_NV21M: descr = "Y/VU 4:2:0 (N-C)"; break; 1363 case V4L2_PIX_FMT_NV16M: descr = "Y/UV 4:2:2 (N-C)"; break; 1364 case V4L2_PIX_FMT_NV61M: descr = "Y/VU 4:2:2 (N-C)"; break; 1365 case V4L2_PIX_FMT_NV12MT: descr = "Y/UV 4:2:0 (64x32 MB, N-C)"; break; 1366 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/UV 4:2:0 (16x16 MB, N-C)"; break; 1367 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break; 1368 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break; 1369 case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break; 1370 case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break; 1371 case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break; 1372 case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break; 1373 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break; 1374 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break; 1375 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break; 1376 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break; 1377 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break; 1378 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break; 1379 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break; 1380 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break; 1381 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break; 1382 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break; 1383 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break; 1384 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break; 1385 case V4L2_PIX_FMT_IPU3_SBGGR10: descr = "10-bit bayer BGGR IPU3 Packed"; break; 1386 case V4L2_PIX_FMT_IPU3_SGBRG10: descr = "10-bit bayer GBRG IPU3 Packed"; break; 1387 case V4L2_PIX_FMT_IPU3_SGRBG10: descr = "10-bit bayer GRBG IPU3 Packed"; break; 1388 case V4L2_PIX_FMT_IPU3_SRGGB10: descr = "10-bit bayer RGGB IPU3 Packed"; break; 1389 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break; 1390 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break; 1391 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break; 1392 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break; 1393 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break; 1394 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break; 1395 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break; 1396 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break; 1397 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break; 1398 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break; 1399 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break; 1400 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break; 1401 case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break; 1402 case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break; 1403 case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break; 1404 case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break; 1405 case V4L2_PIX_FMT_SBGGR14: descr = "14-bit Bayer BGBG/GRGR"; break; 1406 case V4L2_PIX_FMT_SGBRG14: descr = "14-bit Bayer GBGB/RGRG"; break; 1407 case V4L2_PIX_FMT_SGRBG14: descr = "14-bit Bayer GRGR/BGBG"; break; 1408 case V4L2_PIX_FMT_SRGGB14: descr = "14-bit Bayer RGRG/GBGB"; break; 1409 case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break; 1410 case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break; 1411 case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break; 1412 case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break; 1413 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break; 1414 case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break; 1415 case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break; 1416 case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break; 1417 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break; 1418 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break; 1419 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break; 1420 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break; 1421 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break; 1422 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break; 1423 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break; 1424 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break; 1425 case V4L2_PIX_FMT_MM21: descr = "Mediatek 8-bit Block Format"; break; 1426 case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break; 1427 case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break; 1428 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break; 1429 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break; 1430 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break; 1431 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break; 1432 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break; 1433 case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break; 1434 case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break; 1435 case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break; 1436 case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit Signed Deltas"; break; 1437 case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit Signed Deltas"; break; 1438 case V4L2_TCH_FMT_TU16: descr = "16-bit Unsigned Touch Data"; break; 1439 case V4L2_TCH_FMT_TU08: descr = "8-bit Unsigned Touch Data"; break; 1440 case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break; 1441 case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break; 1442 case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break; 1443 case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break; 1444 case V4L2_META_FMT_VIVID: descr = "Vivid Metadata"; break; 1445 case V4L2_META_FMT_RK_ISP1_PARAMS: descr = "Rockchip ISP1 3A Parameters"; break; 1446 case V4L2_META_FMT_RK_ISP1_STAT_3A: descr = "Rockchip ISP1 3A Statistics"; break; 1447 case V4L2_PIX_FMT_NV12M_8L128: descr = "NV12M (8x128 Linear)"; break; 1448 case V4L2_PIX_FMT_NV12M_10BE_8L128: descr = "10-bit NV12M (8x128 Linear, BE)"; break; 1449 1450 default: 1451 /* Compressed formats */ 1452 flags = V4L2_FMT_FLAG_COMPRESSED; 1453 switch (fmt->pixelformat) { 1454 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1455 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break; 1456 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break; 1457 case V4L2_PIX_FMT_DV: descr = "1394"; break; 1458 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break; 1459 case V4L2_PIX_FMT_H264: descr = "H.264"; break; 1460 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break; 1461 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break; 1462 case V4L2_PIX_FMT_H264_SLICE: descr = "H.264 Parsed Slice Data"; break; 1463 case V4L2_PIX_FMT_H263: descr = "H.263"; break; 1464 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break; 1465 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break; 1466 case V4L2_PIX_FMT_MPEG2_SLICE: descr = "MPEG-2 Parsed Slice Data"; break; 1467 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 Part 2 ES"; break; 1468 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break; 1469 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break; 1470 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break; 1471 case V4L2_PIX_FMT_VP8: descr = "VP8"; break; 1472 case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break; 1473 case V4L2_PIX_FMT_VP9: descr = "VP9"; break; 1474 case V4L2_PIX_FMT_VP9_FRAME: descr = "VP9 Frame"; break; 1475 case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */ 1476 case V4L2_PIX_FMT_HEVC_SLICE: descr = "HEVC Parsed Slice Data"; break; 1477 case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */ 1478 case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */ 1479 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break; 1480 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break; 1481 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break; 1482 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break; 1483 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break; 1484 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break; 1485 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break; 1486 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break; 1487 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break; 1488 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break; 1489 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break; 1490 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break; 1491 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break; 1492 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break; 1493 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break; 1494 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break; 1495 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break; 1496 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break; 1497 case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break; 1498 case V4L2_PIX_FMT_QC08C: descr = "QCOM Compressed 8-bit Format"; break; 1499 case V4L2_PIX_FMT_QC10C: descr = "QCOM Compressed 10-bit Format"; break; 1500 case V4L2_PIX_FMT_AJPG: descr = "Aspeed JPEG"; break; 1501 default: 1502 if (fmt->description[0]) 1503 return; 1504 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat); 1505 flags = 0; 1506 snprintf(fmt->description, sz, "%p4cc", 1507 &fmt->pixelformat); 1508 break; 1509 } 1510 } 1511 1512 if (descr) 1513 WARN_ON(strscpy(fmt->description, descr, sz) < 0); 1514 fmt->flags |= flags; 1515 } 1516 1517 static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops, 1518 struct file *file, void *fh, void *arg) 1519 { 1520 struct video_device *vdev = video_devdata(file); 1521 struct v4l2_fmtdesc *p = arg; 1522 int ret = check_fmt(file, p->type); 1523 u32 mbus_code; 1524 u32 cap_mask; 1525 1526 if (ret) 1527 return ret; 1528 ret = -EINVAL; 1529 1530 if (!(vdev->device_caps & V4L2_CAP_IO_MC)) 1531 p->mbus_code = 0; 1532 1533 mbus_code = p->mbus_code; 1534 CLEAR_AFTER_FIELD(p, type); 1535 p->mbus_code = mbus_code; 1536 1537 switch (p->type) { 1538 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1539 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1540 cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE | 1541 V4L2_CAP_VIDEO_M2M_MPLANE; 1542 if (!!(vdev->device_caps & cap_mask) != 1543 (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) 1544 break; 1545 1546 if (unlikely(!ops->vidioc_enum_fmt_vid_cap)) 1547 break; 1548 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg); 1549 break; 1550 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1551 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay)) 1552 break; 1553 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg); 1554 break; 1555 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1556 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1557 cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE | 1558 V4L2_CAP_VIDEO_M2M_MPLANE; 1559 if (!!(vdev->device_caps & cap_mask) != 1560 (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)) 1561 break; 1562 1563 if (unlikely(!ops->vidioc_enum_fmt_vid_out)) 1564 break; 1565 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg); 1566 break; 1567 case V4L2_BUF_TYPE_SDR_CAPTURE: 1568 if (unlikely(!ops->vidioc_enum_fmt_sdr_cap)) 1569 break; 1570 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg); 1571 break; 1572 case V4L2_BUF_TYPE_SDR_OUTPUT: 1573 if (unlikely(!ops->vidioc_enum_fmt_sdr_out)) 1574 break; 1575 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg); 1576 break; 1577 case V4L2_BUF_TYPE_META_CAPTURE: 1578 if (unlikely(!ops->vidioc_enum_fmt_meta_cap)) 1579 break; 1580 ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg); 1581 break; 1582 case V4L2_BUF_TYPE_META_OUTPUT: 1583 if (unlikely(!ops->vidioc_enum_fmt_meta_out)) 1584 break; 1585 ret = ops->vidioc_enum_fmt_meta_out(file, fh, arg); 1586 break; 1587 } 1588 if (ret == 0) 1589 v4l_fill_fmtdesc(p); 1590 return ret; 1591 } 1592 1593 static void v4l_pix_format_touch(struct v4l2_pix_format *p) 1594 { 1595 /* 1596 * The v4l2_pix_format structure contains fields that make no sense for 1597 * touch. Set them to default values in this case. 1598 */ 1599 1600 p->field = V4L2_FIELD_NONE; 1601 p->colorspace = V4L2_COLORSPACE_RAW; 1602 p->flags = 0; 1603 p->ycbcr_enc = 0; 1604 p->quantization = 0; 1605 p->xfer_func = 0; 1606 } 1607 1608 static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, 1609 struct file *file, void *fh, void *arg) 1610 { 1611 struct v4l2_format *p = arg; 1612 struct video_device *vfd = video_devdata(file); 1613 int ret = check_fmt(file, p->type); 1614 1615 if (ret) 1616 return ret; 1617 1618 /* 1619 * fmt can't be cleared for these overlay types due to the 'clips' 1620 * 'clipcount' and 'bitmap' pointers in struct v4l2_window. 1621 * Those are provided by the user. So handle these two overlay types 1622 * first, and then just do a simple memset for the other types. 1623 */ 1624 switch (p->type) { 1625 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1626 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: { 1627 struct v4l2_clip *clips = p->fmt.win.clips; 1628 u32 clipcount = p->fmt.win.clipcount; 1629 void __user *bitmap = p->fmt.win.bitmap; 1630 1631 memset(&p->fmt, 0, sizeof(p->fmt)); 1632 p->fmt.win.clips = clips; 1633 p->fmt.win.clipcount = clipcount; 1634 p->fmt.win.bitmap = bitmap; 1635 break; 1636 } 1637 default: 1638 memset(&p->fmt, 0, sizeof(p->fmt)); 1639 break; 1640 } 1641 1642 switch (p->type) { 1643 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1644 if (unlikely(!ops->vidioc_g_fmt_vid_cap)) 1645 break; 1646 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1647 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg); 1648 /* just in case the driver zeroed it again */ 1649 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1650 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1651 v4l_pix_format_touch(&p->fmt.pix); 1652 return ret; 1653 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1654 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg); 1655 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1656 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg); 1657 case V4L2_BUF_TYPE_VBI_CAPTURE: 1658 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg); 1659 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1660 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg); 1661 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1662 if (unlikely(!ops->vidioc_g_fmt_vid_out)) 1663 break; 1664 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1665 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg); 1666 /* just in case the driver zeroed it again */ 1667 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1668 return ret; 1669 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1670 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg); 1671 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1672 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg); 1673 case V4L2_BUF_TYPE_VBI_OUTPUT: 1674 return ops->vidioc_g_fmt_vbi_out(file, fh, arg); 1675 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1676 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg); 1677 case V4L2_BUF_TYPE_SDR_CAPTURE: 1678 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg); 1679 case V4L2_BUF_TYPE_SDR_OUTPUT: 1680 return ops->vidioc_g_fmt_sdr_out(file, fh, arg); 1681 case V4L2_BUF_TYPE_META_CAPTURE: 1682 return ops->vidioc_g_fmt_meta_cap(file, fh, arg); 1683 case V4L2_BUF_TYPE_META_OUTPUT: 1684 return ops->vidioc_g_fmt_meta_out(file, fh, arg); 1685 } 1686 return -EINVAL; 1687 } 1688 1689 static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, 1690 struct file *file, void *fh, void *arg) 1691 { 1692 struct v4l2_format *p = arg; 1693 struct video_device *vfd = video_devdata(file); 1694 int ret = check_fmt(file, p->type); 1695 unsigned int i; 1696 1697 if (ret) 1698 return ret; 1699 1700 ret = v4l_enable_media_source(vfd); 1701 if (ret) 1702 return ret; 1703 v4l_sanitize_format(p); 1704 1705 switch (p->type) { 1706 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1707 if (unlikely(!ops->vidioc_s_fmt_vid_cap)) 1708 break; 1709 CLEAR_AFTER_FIELD(p, fmt.pix); 1710 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg); 1711 /* just in case the driver zeroed it again */ 1712 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1713 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1714 v4l_pix_format_touch(&p->fmt.pix); 1715 return ret; 1716 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1717 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane)) 1718 break; 1719 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1720 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1721 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1722 bytesperline); 1723 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg); 1724 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1725 if (unlikely(!ops->vidioc_s_fmt_vid_overlay)) 1726 break; 1727 CLEAR_AFTER_FIELD(p, fmt.win); 1728 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg); 1729 case V4L2_BUF_TYPE_VBI_CAPTURE: 1730 if (unlikely(!ops->vidioc_s_fmt_vbi_cap)) 1731 break; 1732 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1733 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg); 1734 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1735 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap)) 1736 break; 1737 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1738 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg); 1739 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1740 if (unlikely(!ops->vidioc_s_fmt_vid_out)) 1741 break; 1742 CLEAR_AFTER_FIELD(p, fmt.pix); 1743 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg); 1744 /* just in case the driver zeroed it again */ 1745 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1746 return ret; 1747 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1748 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane)) 1749 break; 1750 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1751 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1752 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1753 bytesperline); 1754 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg); 1755 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1756 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay)) 1757 break; 1758 CLEAR_AFTER_FIELD(p, fmt.win); 1759 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg); 1760 case V4L2_BUF_TYPE_VBI_OUTPUT: 1761 if (unlikely(!ops->vidioc_s_fmt_vbi_out)) 1762 break; 1763 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1764 return ops->vidioc_s_fmt_vbi_out(file, fh, arg); 1765 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1766 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out)) 1767 break; 1768 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1769 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg); 1770 case V4L2_BUF_TYPE_SDR_CAPTURE: 1771 if (unlikely(!ops->vidioc_s_fmt_sdr_cap)) 1772 break; 1773 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1774 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg); 1775 case V4L2_BUF_TYPE_SDR_OUTPUT: 1776 if (unlikely(!ops->vidioc_s_fmt_sdr_out)) 1777 break; 1778 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1779 return ops->vidioc_s_fmt_sdr_out(file, fh, arg); 1780 case V4L2_BUF_TYPE_META_CAPTURE: 1781 if (unlikely(!ops->vidioc_s_fmt_meta_cap)) 1782 break; 1783 CLEAR_AFTER_FIELD(p, fmt.meta); 1784 return ops->vidioc_s_fmt_meta_cap(file, fh, arg); 1785 case V4L2_BUF_TYPE_META_OUTPUT: 1786 if (unlikely(!ops->vidioc_s_fmt_meta_out)) 1787 break; 1788 CLEAR_AFTER_FIELD(p, fmt.meta); 1789 return ops->vidioc_s_fmt_meta_out(file, fh, arg); 1790 } 1791 return -EINVAL; 1792 } 1793 1794 static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, 1795 struct file *file, void *fh, void *arg) 1796 { 1797 struct v4l2_format *p = arg; 1798 struct video_device *vfd = video_devdata(file); 1799 int ret = check_fmt(file, p->type); 1800 unsigned int i; 1801 1802 if (ret) 1803 return ret; 1804 1805 v4l_sanitize_format(p); 1806 1807 switch (p->type) { 1808 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1809 if (unlikely(!ops->vidioc_try_fmt_vid_cap)) 1810 break; 1811 CLEAR_AFTER_FIELD(p, fmt.pix); 1812 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg); 1813 /* just in case the driver zeroed it again */ 1814 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1815 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1816 v4l_pix_format_touch(&p->fmt.pix); 1817 return ret; 1818 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1819 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane)) 1820 break; 1821 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1822 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1823 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1824 bytesperline); 1825 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg); 1826 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1827 if (unlikely(!ops->vidioc_try_fmt_vid_overlay)) 1828 break; 1829 CLEAR_AFTER_FIELD(p, fmt.win); 1830 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg); 1831 case V4L2_BUF_TYPE_VBI_CAPTURE: 1832 if (unlikely(!ops->vidioc_try_fmt_vbi_cap)) 1833 break; 1834 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1835 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg); 1836 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1837 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap)) 1838 break; 1839 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1840 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg); 1841 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1842 if (unlikely(!ops->vidioc_try_fmt_vid_out)) 1843 break; 1844 CLEAR_AFTER_FIELD(p, fmt.pix); 1845 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg); 1846 /* just in case the driver zeroed it again */ 1847 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1848 return ret; 1849 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1850 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane)) 1851 break; 1852 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1853 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1854 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1855 bytesperline); 1856 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg); 1857 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1858 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay)) 1859 break; 1860 CLEAR_AFTER_FIELD(p, fmt.win); 1861 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg); 1862 case V4L2_BUF_TYPE_VBI_OUTPUT: 1863 if (unlikely(!ops->vidioc_try_fmt_vbi_out)) 1864 break; 1865 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1866 return ops->vidioc_try_fmt_vbi_out(file, fh, arg); 1867 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1868 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out)) 1869 break; 1870 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1871 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg); 1872 case V4L2_BUF_TYPE_SDR_CAPTURE: 1873 if (unlikely(!ops->vidioc_try_fmt_sdr_cap)) 1874 break; 1875 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1876 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg); 1877 case V4L2_BUF_TYPE_SDR_OUTPUT: 1878 if (unlikely(!ops->vidioc_try_fmt_sdr_out)) 1879 break; 1880 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1881 return ops->vidioc_try_fmt_sdr_out(file, fh, arg); 1882 case V4L2_BUF_TYPE_META_CAPTURE: 1883 if (unlikely(!ops->vidioc_try_fmt_meta_cap)) 1884 break; 1885 CLEAR_AFTER_FIELD(p, fmt.meta); 1886 return ops->vidioc_try_fmt_meta_cap(file, fh, arg); 1887 case V4L2_BUF_TYPE_META_OUTPUT: 1888 if (unlikely(!ops->vidioc_try_fmt_meta_out)) 1889 break; 1890 CLEAR_AFTER_FIELD(p, fmt.meta); 1891 return ops->vidioc_try_fmt_meta_out(file, fh, arg); 1892 } 1893 return -EINVAL; 1894 } 1895 1896 static int v4l_streamon(const struct v4l2_ioctl_ops *ops, 1897 struct file *file, void *fh, void *arg) 1898 { 1899 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg); 1900 } 1901 1902 static int v4l_streamoff(const struct v4l2_ioctl_ops *ops, 1903 struct file *file, void *fh, void *arg) 1904 { 1905 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg); 1906 } 1907 1908 static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops, 1909 struct file *file, void *fh, void *arg) 1910 { 1911 struct video_device *vfd = video_devdata(file); 1912 struct v4l2_tuner *p = arg; 1913 int err; 1914 1915 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1916 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1917 err = ops->vidioc_g_tuner(file, fh, p); 1918 if (!err) 1919 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1920 return err; 1921 } 1922 1923 static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops, 1924 struct file *file, void *fh, void *arg) 1925 { 1926 struct video_device *vfd = video_devdata(file); 1927 struct v4l2_tuner *p = arg; 1928 int ret; 1929 1930 ret = v4l_enable_media_source(vfd); 1931 if (ret) 1932 return ret; 1933 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1934 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1935 return ops->vidioc_s_tuner(file, fh, p); 1936 } 1937 1938 static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops, 1939 struct file *file, void *fh, void *arg) 1940 { 1941 struct video_device *vfd = video_devdata(file); 1942 struct v4l2_modulator *p = arg; 1943 int err; 1944 1945 if (vfd->vfl_type == VFL_TYPE_RADIO) 1946 p->type = V4L2_TUNER_RADIO; 1947 1948 err = ops->vidioc_g_modulator(file, fh, p); 1949 if (!err) 1950 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1951 return err; 1952 } 1953 1954 static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops, 1955 struct file *file, void *fh, void *arg) 1956 { 1957 struct video_device *vfd = video_devdata(file); 1958 struct v4l2_modulator *p = arg; 1959 1960 if (vfd->vfl_type == VFL_TYPE_RADIO) 1961 p->type = V4L2_TUNER_RADIO; 1962 1963 return ops->vidioc_s_modulator(file, fh, p); 1964 } 1965 1966 static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops, 1967 struct file *file, void *fh, void *arg) 1968 { 1969 struct video_device *vfd = video_devdata(file); 1970 struct v4l2_frequency *p = arg; 1971 1972 if (vfd->vfl_type == VFL_TYPE_SDR) 1973 p->type = V4L2_TUNER_SDR; 1974 else 1975 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1976 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1977 return ops->vidioc_g_frequency(file, fh, p); 1978 } 1979 1980 static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops, 1981 struct file *file, void *fh, void *arg) 1982 { 1983 struct video_device *vfd = video_devdata(file); 1984 const struct v4l2_frequency *p = arg; 1985 enum v4l2_tuner_type type; 1986 int ret; 1987 1988 ret = v4l_enable_media_source(vfd); 1989 if (ret) 1990 return ret; 1991 if (vfd->vfl_type == VFL_TYPE_SDR) { 1992 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 1993 return -EINVAL; 1994 } else { 1995 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1996 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1997 if (type != p->type) 1998 return -EINVAL; 1999 } 2000 return ops->vidioc_s_frequency(file, fh, p); 2001 } 2002 2003 static int v4l_enumstd(const struct v4l2_ioctl_ops *ops, 2004 struct file *file, void *fh, void *arg) 2005 { 2006 struct video_device *vfd = video_devdata(file); 2007 struct v4l2_standard *p = arg; 2008 2009 return v4l_video_std_enumstd(p, vfd->tvnorms); 2010 } 2011 2012 static int v4l_s_std(const struct v4l2_ioctl_ops *ops, 2013 struct file *file, void *fh, void *arg) 2014 { 2015 struct video_device *vfd = video_devdata(file); 2016 v4l2_std_id id = *(v4l2_std_id *)arg, norm; 2017 int ret; 2018 2019 ret = v4l_enable_media_source(vfd); 2020 if (ret) 2021 return ret; 2022 norm = id & vfd->tvnorms; 2023 if (vfd->tvnorms && !norm) /* Check if std is supported */ 2024 return -EINVAL; 2025 2026 /* Calls the specific handler */ 2027 return ops->vidioc_s_std(file, fh, norm); 2028 } 2029 2030 static int v4l_querystd(const struct v4l2_ioctl_ops *ops, 2031 struct file *file, void *fh, void *arg) 2032 { 2033 struct video_device *vfd = video_devdata(file); 2034 v4l2_std_id *p = arg; 2035 int ret; 2036 2037 ret = v4l_enable_media_source(vfd); 2038 if (ret) 2039 return ret; 2040 /* 2041 * If no signal is detected, then the driver should return 2042 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with 2043 * any standards that do not apply removed. 2044 * 2045 * This means that tuners, audio and video decoders can join 2046 * their efforts to improve the standards detection. 2047 */ 2048 *p = vfd->tvnorms; 2049 return ops->vidioc_querystd(file, fh, arg); 2050 } 2051 2052 static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops, 2053 struct file *file, void *fh, void *arg) 2054 { 2055 struct video_device *vfd = video_devdata(file); 2056 struct v4l2_hw_freq_seek *p = arg; 2057 enum v4l2_tuner_type type; 2058 int ret; 2059 2060 ret = v4l_enable_media_source(vfd); 2061 if (ret) 2062 return ret; 2063 /* s_hw_freq_seek is not supported for SDR for now */ 2064 if (vfd->vfl_type == VFL_TYPE_SDR) 2065 return -EINVAL; 2066 2067 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2068 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2069 if (p->type != type) 2070 return -EINVAL; 2071 return ops->vidioc_s_hw_freq_seek(file, fh, p); 2072 } 2073 2074 static int v4l_overlay(const struct v4l2_ioctl_ops *ops, 2075 struct file *file, void *fh, void *arg) 2076 { 2077 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg); 2078 } 2079 2080 static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops, 2081 struct file *file, void *fh, void *arg) 2082 { 2083 struct v4l2_requestbuffers *p = arg; 2084 int ret = check_fmt(file, p->type); 2085 2086 if (ret) 2087 return ret; 2088 2089 CLEAR_AFTER_FIELD(p, flags); 2090 2091 return ops->vidioc_reqbufs(file, fh, p); 2092 } 2093 2094 static int v4l_querybuf(const struct v4l2_ioctl_ops *ops, 2095 struct file *file, void *fh, void *arg) 2096 { 2097 struct v4l2_buffer *p = arg; 2098 int ret = check_fmt(file, p->type); 2099 2100 return ret ? ret : ops->vidioc_querybuf(file, fh, p); 2101 } 2102 2103 static int v4l_qbuf(const struct v4l2_ioctl_ops *ops, 2104 struct file *file, void *fh, void *arg) 2105 { 2106 struct v4l2_buffer *p = arg; 2107 int ret = check_fmt(file, p->type); 2108 2109 return ret ? ret : ops->vidioc_qbuf(file, fh, p); 2110 } 2111 2112 static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops, 2113 struct file *file, void *fh, void *arg) 2114 { 2115 struct v4l2_buffer *p = arg; 2116 int ret = check_fmt(file, p->type); 2117 2118 return ret ? ret : ops->vidioc_dqbuf(file, fh, p); 2119 } 2120 2121 static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops, 2122 struct file *file, void *fh, void *arg) 2123 { 2124 struct v4l2_create_buffers *create = arg; 2125 int ret = check_fmt(file, create->format.type); 2126 2127 if (ret) 2128 return ret; 2129 2130 CLEAR_AFTER_FIELD(create, flags); 2131 2132 v4l_sanitize_format(&create->format); 2133 2134 ret = ops->vidioc_create_bufs(file, fh, create); 2135 2136 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 2137 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT) 2138 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 2139 2140 return ret; 2141 } 2142 2143 static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops, 2144 struct file *file, void *fh, void *arg) 2145 { 2146 struct v4l2_buffer *b = arg; 2147 int ret = check_fmt(file, b->type); 2148 2149 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b); 2150 } 2151 2152 static int v4l_g_parm(const struct v4l2_ioctl_ops *ops, 2153 struct file *file, void *fh, void *arg) 2154 { 2155 struct video_device *vfd = video_devdata(file); 2156 struct v4l2_streamparm *p = arg; 2157 v4l2_std_id std; 2158 int ret = check_fmt(file, p->type); 2159 2160 if (ret) 2161 return ret; 2162 if (ops->vidioc_g_parm) 2163 return ops->vidioc_g_parm(file, fh, p); 2164 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && 2165 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2166 return -EINVAL; 2167 if (vfd->device_caps & V4L2_CAP_READWRITE) 2168 p->parm.capture.readbuffers = 2; 2169 ret = ops->vidioc_g_std(file, fh, &std); 2170 if (ret == 0) 2171 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe); 2172 return ret; 2173 } 2174 2175 static int v4l_s_parm(const struct v4l2_ioctl_ops *ops, 2176 struct file *file, void *fh, void *arg) 2177 { 2178 struct v4l2_streamparm *p = arg; 2179 int ret = check_fmt(file, p->type); 2180 2181 if (ret) 2182 return ret; 2183 2184 /* Note: extendedmode is never used in drivers */ 2185 if (V4L2_TYPE_IS_OUTPUT(p->type)) { 2186 memset(p->parm.output.reserved, 0, 2187 sizeof(p->parm.output.reserved)); 2188 p->parm.output.extendedmode = 0; 2189 p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY; 2190 } else { 2191 memset(p->parm.capture.reserved, 0, 2192 sizeof(p->parm.capture.reserved)); 2193 p->parm.capture.extendedmode = 0; 2194 p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY; 2195 } 2196 return ops->vidioc_s_parm(file, fh, p); 2197 } 2198 2199 static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops, 2200 struct file *file, void *fh, void *arg) 2201 { 2202 struct video_device *vfd = video_devdata(file); 2203 struct v4l2_queryctrl *p = arg; 2204 struct v4l2_fh *vfh = 2205 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2206 2207 if (vfh && vfh->ctrl_handler) 2208 return v4l2_queryctrl(vfh->ctrl_handler, p); 2209 if (vfd->ctrl_handler) 2210 return v4l2_queryctrl(vfd->ctrl_handler, p); 2211 if (ops->vidioc_queryctrl) 2212 return ops->vidioc_queryctrl(file, fh, p); 2213 return -ENOTTY; 2214 } 2215 2216 static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops, 2217 struct file *file, void *fh, void *arg) 2218 { 2219 struct video_device *vfd = video_devdata(file); 2220 struct v4l2_query_ext_ctrl *p = arg; 2221 struct v4l2_fh *vfh = 2222 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2223 2224 if (vfh && vfh->ctrl_handler) 2225 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p); 2226 if (vfd->ctrl_handler) 2227 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p); 2228 if (ops->vidioc_query_ext_ctrl) 2229 return ops->vidioc_query_ext_ctrl(file, fh, p); 2230 return -ENOTTY; 2231 } 2232 2233 static int v4l_querymenu(const struct v4l2_ioctl_ops *ops, 2234 struct file *file, void *fh, void *arg) 2235 { 2236 struct video_device *vfd = video_devdata(file); 2237 struct v4l2_querymenu *p = arg; 2238 struct v4l2_fh *vfh = 2239 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2240 2241 if (vfh && vfh->ctrl_handler) 2242 return v4l2_querymenu(vfh->ctrl_handler, p); 2243 if (vfd->ctrl_handler) 2244 return v4l2_querymenu(vfd->ctrl_handler, p); 2245 if (ops->vidioc_querymenu) 2246 return ops->vidioc_querymenu(file, fh, p); 2247 return -ENOTTY; 2248 } 2249 2250 static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops, 2251 struct file *file, void *fh, void *arg) 2252 { 2253 struct video_device *vfd = video_devdata(file); 2254 struct v4l2_control *p = arg; 2255 struct v4l2_fh *vfh = 2256 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2257 struct v4l2_ext_controls ctrls; 2258 struct v4l2_ext_control ctrl; 2259 2260 if (vfh && vfh->ctrl_handler) 2261 return v4l2_g_ctrl(vfh->ctrl_handler, p); 2262 if (vfd->ctrl_handler) 2263 return v4l2_g_ctrl(vfd->ctrl_handler, p); 2264 if (ops->vidioc_g_ctrl) 2265 return ops->vidioc_g_ctrl(file, fh, p); 2266 if (ops->vidioc_g_ext_ctrls == NULL) 2267 return -ENOTTY; 2268 2269 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2270 ctrls.count = 1; 2271 ctrls.controls = &ctrl; 2272 ctrl.id = p->id; 2273 ctrl.value = p->value; 2274 if (check_ext_ctrls(&ctrls, VIDIOC_G_CTRL)) { 2275 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls); 2276 2277 if (ret == 0) 2278 p->value = ctrl.value; 2279 return ret; 2280 } 2281 return -EINVAL; 2282 } 2283 2284 static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, 2285 struct file *file, void *fh, void *arg) 2286 { 2287 struct video_device *vfd = video_devdata(file); 2288 struct v4l2_control *p = arg; 2289 struct v4l2_fh *vfh = 2290 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2291 struct v4l2_ext_controls ctrls; 2292 struct v4l2_ext_control ctrl; 2293 int ret; 2294 2295 if (vfh && vfh->ctrl_handler) 2296 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p); 2297 if (vfd->ctrl_handler) 2298 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p); 2299 if (ops->vidioc_s_ctrl) 2300 return ops->vidioc_s_ctrl(file, fh, p); 2301 if (ops->vidioc_s_ext_ctrls == NULL) 2302 return -ENOTTY; 2303 2304 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2305 ctrls.count = 1; 2306 ctrls.controls = &ctrl; 2307 ctrl.id = p->id; 2308 ctrl.value = p->value; 2309 if (!check_ext_ctrls(&ctrls, VIDIOC_S_CTRL)) 2310 return -EINVAL; 2311 ret = ops->vidioc_s_ext_ctrls(file, fh, &ctrls); 2312 p->value = ctrl.value; 2313 return ret; 2314 } 2315 2316 static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2317 struct file *file, void *fh, void *arg) 2318 { 2319 struct video_device *vfd = video_devdata(file); 2320 struct v4l2_ext_controls *p = arg; 2321 struct v4l2_fh *vfh = 2322 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2323 2324 p->error_idx = p->count; 2325 if (vfh && vfh->ctrl_handler) 2326 return v4l2_g_ext_ctrls(vfh->ctrl_handler, 2327 vfd, vfd->v4l2_dev->mdev, p); 2328 if (vfd->ctrl_handler) 2329 return v4l2_g_ext_ctrls(vfd->ctrl_handler, 2330 vfd, vfd->v4l2_dev->mdev, p); 2331 if (ops->vidioc_g_ext_ctrls == NULL) 2332 return -ENOTTY; 2333 return check_ext_ctrls(p, VIDIOC_G_EXT_CTRLS) ? 2334 ops->vidioc_g_ext_ctrls(file, fh, p) : -EINVAL; 2335 } 2336 2337 static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2338 struct file *file, void *fh, void *arg) 2339 { 2340 struct video_device *vfd = video_devdata(file); 2341 struct v4l2_ext_controls *p = arg; 2342 struct v4l2_fh *vfh = 2343 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2344 2345 p->error_idx = p->count; 2346 if (vfh && vfh->ctrl_handler) 2347 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, 2348 vfd, vfd->v4l2_dev->mdev, p); 2349 if (vfd->ctrl_handler) 2350 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, 2351 vfd, vfd->v4l2_dev->mdev, p); 2352 if (ops->vidioc_s_ext_ctrls == NULL) 2353 return -ENOTTY; 2354 return check_ext_ctrls(p, VIDIOC_S_EXT_CTRLS) ? 2355 ops->vidioc_s_ext_ctrls(file, fh, p) : -EINVAL; 2356 } 2357 2358 static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2359 struct file *file, void *fh, void *arg) 2360 { 2361 struct video_device *vfd = video_devdata(file); 2362 struct v4l2_ext_controls *p = arg; 2363 struct v4l2_fh *vfh = 2364 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2365 2366 p->error_idx = p->count; 2367 if (vfh && vfh->ctrl_handler) 2368 return v4l2_try_ext_ctrls(vfh->ctrl_handler, 2369 vfd, vfd->v4l2_dev->mdev, p); 2370 if (vfd->ctrl_handler) 2371 return v4l2_try_ext_ctrls(vfd->ctrl_handler, 2372 vfd, vfd->v4l2_dev->mdev, p); 2373 if (ops->vidioc_try_ext_ctrls == NULL) 2374 return -ENOTTY; 2375 return check_ext_ctrls(p, VIDIOC_TRY_EXT_CTRLS) ? 2376 ops->vidioc_try_ext_ctrls(file, fh, p) : -EINVAL; 2377 } 2378 2379 /* 2380 * The selection API specified originally that the _MPLANE buffer types 2381 * shouldn't be used. The reasons for this are lost in the mists of time 2382 * (or just really crappy memories). Regardless, this is really annoying 2383 * for userspace. So to keep things simple we map _MPLANE buffer types 2384 * to their 'regular' counterparts before calling the driver. And we 2385 * restore it afterwards. This way applications can use either buffer 2386 * type and drivers don't need to check for both. 2387 */ 2388 static int v4l_g_selection(const struct v4l2_ioctl_ops *ops, 2389 struct file *file, void *fh, void *arg) 2390 { 2391 struct v4l2_selection *p = arg; 2392 u32 old_type = p->type; 2393 int ret; 2394 2395 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2396 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2397 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2398 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2399 ret = ops->vidioc_g_selection(file, fh, p); 2400 p->type = old_type; 2401 return ret; 2402 } 2403 2404 static int v4l_s_selection(const struct v4l2_ioctl_ops *ops, 2405 struct file *file, void *fh, void *arg) 2406 { 2407 struct v4l2_selection *p = arg; 2408 u32 old_type = p->type; 2409 int ret; 2410 2411 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2412 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2413 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2414 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2415 ret = ops->vidioc_s_selection(file, fh, p); 2416 p->type = old_type; 2417 return ret; 2418 } 2419 2420 static int v4l_g_crop(const struct v4l2_ioctl_ops *ops, 2421 struct file *file, void *fh, void *arg) 2422 { 2423 struct video_device *vfd = video_devdata(file); 2424 struct v4l2_crop *p = arg; 2425 struct v4l2_selection s = { 2426 .type = p->type, 2427 }; 2428 int ret; 2429 2430 /* simulate capture crop using selection api */ 2431 2432 /* crop means compose for output devices */ 2433 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2434 s.target = V4L2_SEL_TGT_COMPOSE; 2435 else 2436 s.target = V4L2_SEL_TGT_CROP; 2437 2438 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2439 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2440 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2441 2442 ret = v4l_g_selection(ops, file, fh, &s); 2443 2444 /* copying results to old structure on success */ 2445 if (!ret) 2446 p->c = s.r; 2447 return ret; 2448 } 2449 2450 static int v4l_s_crop(const struct v4l2_ioctl_ops *ops, 2451 struct file *file, void *fh, void *arg) 2452 { 2453 struct video_device *vfd = video_devdata(file); 2454 struct v4l2_crop *p = arg; 2455 struct v4l2_selection s = { 2456 .type = p->type, 2457 .r = p->c, 2458 }; 2459 2460 /* simulate capture crop using selection api */ 2461 2462 /* crop means compose for output devices */ 2463 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2464 s.target = V4L2_SEL_TGT_COMPOSE; 2465 else 2466 s.target = V4L2_SEL_TGT_CROP; 2467 2468 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2469 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2470 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2471 2472 return v4l_s_selection(ops, file, fh, &s); 2473 } 2474 2475 static int v4l_cropcap(const struct v4l2_ioctl_ops *ops, 2476 struct file *file, void *fh, void *arg) 2477 { 2478 struct video_device *vfd = video_devdata(file); 2479 struct v4l2_cropcap *p = arg; 2480 struct v4l2_selection s = { .type = p->type }; 2481 int ret = 0; 2482 2483 /* setting trivial pixelaspect */ 2484 p->pixelaspect.numerator = 1; 2485 p->pixelaspect.denominator = 1; 2486 2487 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2488 s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2489 else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2490 s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2491 2492 /* 2493 * The determine_valid_ioctls() call already should ensure 2494 * that this can never happen, but just in case... 2495 */ 2496 if (WARN_ON(!ops->vidioc_g_selection)) 2497 return -ENOTTY; 2498 2499 if (ops->vidioc_g_pixelaspect) 2500 ret = ops->vidioc_g_pixelaspect(file, fh, s.type, 2501 &p->pixelaspect); 2502 2503 /* 2504 * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the 2505 * square pixel aspect ratio in that case. 2506 */ 2507 if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD) 2508 return ret; 2509 2510 /* Use g_selection() to fill in the bounds and defrect rectangles */ 2511 2512 /* obtaining bounds */ 2513 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2514 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS; 2515 else 2516 s.target = V4L2_SEL_TGT_CROP_BOUNDS; 2517 2518 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2519 s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ? 2520 V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS; 2521 2522 ret = v4l_g_selection(ops, file, fh, &s); 2523 if (ret) 2524 return ret; 2525 p->bounds = s.r; 2526 2527 /* obtaining defrect */ 2528 if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS) 2529 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT; 2530 else 2531 s.target = V4L2_SEL_TGT_CROP_DEFAULT; 2532 2533 ret = v4l_g_selection(ops, file, fh, &s); 2534 if (ret) 2535 return ret; 2536 p->defrect = s.r; 2537 2538 return 0; 2539 } 2540 2541 static int v4l_log_status(const struct v4l2_ioctl_ops *ops, 2542 struct file *file, void *fh, void *arg) 2543 { 2544 struct video_device *vfd = video_devdata(file); 2545 int ret; 2546 2547 if (vfd->v4l2_dev) 2548 pr_info("%s: ================= START STATUS =================\n", 2549 vfd->v4l2_dev->name); 2550 ret = ops->vidioc_log_status(file, fh); 2551 if (vfd->v4l2_dev) 2552 pr_info("%s: ================== END STATUS ==================\n", 2553 vfd->v4l2_dev->name); 2554 return ret; 2555 } 2556 2557 static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops, 2558 struct file *file, void *fh, void *arg) 2559 { 2560 #ifdef CONFIG_VIDEO_ADV_DEBUG 2561 struct v4l2_dbg_register *p = arg; 2562 struct video_device *vfd = video_devdata(file); 2563 struct v4l2_subdev *sd; 2564 int idx = 0; 2565 2566 if (!capable(CAP_SYS_ADMIN)) 2567 return -EPERM; 2568 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2569 if (vfd->v4l2_dev == NULL) 2570 return -EINVAL; 2571 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2572 if (p->match.addr == idx++) 2573 return v4l2_subdev_call(sd, core, g_register, p); 2574 return -EINVAL; 2575 } 2576 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2577 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2578 return ops->vidioc_g_register(file, fh, p); 2579 return -EINVAL; 2580 #else 2581 return -ENOTTY; 2582 #endif 2583 } 2584 2585 static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops, 2586 struct file *file, void *fh, void *arg) 2587 { 2588 #ifdef CONFIG_VIDEO_ADV_DEBUG 2589 const struct v4l2_dbg_register *p = arg; 2590 struct video_device *vfd = video_devdata(file); 2591 struct v4l2_subdev *sd; 2592 int idx = 0; 2593 2594 if (!capable(CAP_SYS_ADMIN)) 2595 return -EPERM; 2596 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2597 if (vfd->v4l2_dev == NULL) 2598 return -EINVAL; 2599 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2600 if (p->match.addr == idx++) 2601 return v4l2_subdev_call(sd, core, s_register, p); 2602 return -EINVAL; 2603 } 2604 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2605 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2606 return ops->vidioc_s_register(file, fh, p); 2607 return -EINVAL; 2608 #else 2609 return -ENOTTY; 2610 #endif 2611 } 2612 2613 static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops, 2614 struct file *file, void *fh, void *arg) 2615 { 2616 #ifdef CONFIG_VIDEO_ADV_DEBUG 2617 struct video_device *vfd = video_devdata(file); 2618 struct v4l2_dbg_chip_info *p = arg; 2619 struct v4l2_subdev *sd; 2620 int idx = 0; 2621 2622 switch (p->match.type) { 2623 case V4L2_CHIP_MATCH_BRIDGE: 2624 if (ops->vidioc_s_register) 2625 p->flags |= V4L2_CHIP_FL_WRITABLE; 2626 if (ops->vidioc_g_register) 2627 p->flags |= V4L2_CHIP_FL_READABLE; 2628 strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name)); 2629 if (ops->vidioc_g_chip_info) 2630 return ops->vidioc_g_chip_info(file, fh, arg); 2631 if (p->match.addr) 2632 return -EINVAL; 2633 return 0; 2634 2635 case V4L2_CHIP_MATCH_SUBDEV: 2636 if (vfd->v4l2_dev == NULL) 2637 break; 2638 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) { 2639 if (p->match.addr != idx++) 2640 continue; 2641 if (sd->ops->core && sd->ops->core->s_register) 2642 p->flags |= V4L2_CHIP_FL_WRITABLE; 2643 if (sd->ops->core && sd->ops->core->g_register) 2644 p->flags |= V4L2_CHIP_FL_READABLE; 2645 strscpy(p->name, sd->name, sizeof(p->name)); 2646 return 0; 2647 } 2648 break; 2649 } 2650 return -EINVAL; 2651 #else 2652 return -ENOTTY; 2653 #endif 2654 } 2655 2656 static int v4l_dqevent(const struct v4l2_ioctl_ops *ops, 2657 struct file *file, void *fh, void *arg) 2658 { 2659 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK); 2660 } 2661 2662 static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops, 2663 struct file *file, void *fh, void *arg) 2664 { 2665 return ops->vidioc_subscribe_event(fh, arg); 2666 } 2667 2668 static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops, 2669 struct file *file, void *fh, void *arg) 2670 { 2671 return ops->vidioc_unsubscribe_event(fh, arg); 2672 } 2673 2674 static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops, 2675 struct file *file, void *fh, void *arg) 2676 { 2677 struct v4l2_sliced_vbi_cap *p = arg; 2678 int ret = check_fmt(file, p->type); 2679 2680 if (ret) 2681 return ret; 2682 2683 /* Clear up to type, everything after type is zeroed already */ 2684 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type)); 2685 2686 return ops->vidioc_g_sliced_vbi_cap(file, fh, p); 2687 } 2688 2689 static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops, 2690 struct file *file, void *fh, void *arg) 2691 { 2692 struct video_device *vfd = video_devdata(file); 2693 struct v4l2_frequency_band *p = arg; 2694 enum v4l2_tuner_type type; 2695 int err; 2696 2697 if (vfd->vfl_type == VFL_TYPE_SDR) { 2698 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 2699 return -EINVAL; 2700 type = p->type; 2701 } else { 2702 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2703 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2704 if (type != p->type) 2705 return -EINVAL; 2706 } 2707 if (ops->vidioc_enum_freq_bands) { 2708 err = ops->vidioc_enum_freq_bands(file, fh, p); 2709 if (err != -ENOTTY) 2710 return err; 2711 } 2712 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) { 2713 struct v4l2_tuner t = { 2714 .index = p->tuner, 2715 .type = type, 2716 }; 2717 2718 if (p->index) 2719 return -EINVAL; 2720 err = ops->vidioc_g_tuner(file, fh, &t); 2721 if (err) 2722 return err; 2723 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2724 p->rangelow = t.rangelow; 2725 p->rangehigh = t.rangehigh; 2726 p->modulation = (type == V4L2_TUNER_RADIO) ? 2727 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2728 return 0; 2729 } 2730 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) { 2731 struct v4l2_modulator m = { 2732 .index = p->tuner, 2733 }; 2734 2735 if (type != V4L2_TUNER_RADIO) 2736 return -EINVAL; 2737 if (p->index) 2738 return -EINVAL; 2739 err = ops->vidioc_g_modulator(file, fh, &m); 2740 if (err) 2741 return err; 2742 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2743 p->rangelow = m.rangelow; 2744 p->rangehigh = m.rangehigh; 2745 p->modulation = (type == V4L2_TUNER_RADIO) ? 2746 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2747 return 0; 2748 } 2749 return -ENOTTY; 2750 } 2751 2752 struct v4l2_ioctl_info { 2753 unsigned int ioctl; 2754 u32 flags; 2755 const char * const name; 2756 int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file, 2757 void *fh, void *p); 2758 void (*debug)(const void *arg, bool write_only); 2759 }; 2760 2761 /* This control needs a priority check */ 2762 #define INFO_FL_PRIO (1 << 0) 2763 /* This control can be valid if the filehandle passes a control handler. */ 2764 #define INFO_FL_CTRL (1 << 1) 2765 /* Queuing ioctl */ 2766 #define INFO_FL_QUEUE (1 << 2) 2767 /* Always copy back result, even on error */ 2768 #define INFO_FL_ALWAYS_COPY (1 << 3) 2769 /* Zero struct from after the field to the end */ 2770 #define INFO_FL_CLEAR(v4l2_struct, field) \ 2771 ((offsetof(struct v4l2_struct, field) + \ 2772 sizeof_field(struct v4l2_struct, field)) << 16) 2773 #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16) 2774 2775 #define DEFINE_V4L_STUB_FUNC(_vidioc) \ 2776 static int v4l_stub_ ## _vidioc( \ 2777 const struct v4l2_ioctl_ops *ops, \ 2778 struct file *file, void *fh, void *p) \ 2779 { \ 2780 return ops->vidioc_ ## _vidioc(file, fh, p); \ 2781 } 2782 2783 #define IOCTL_INFO(_ioctl, _func, _debug, _flags) \ 2784 [_IOC_NR(_ioctl)] = { \ 2785 .ioctl = _ioctl, \ 2786 .flags = _flags, \ 2787 .name = #_ioctl, \ 2788 .func = _func, \ 2789 .debug = _debug, \ 2790 } 2791 2792 DEFINE_V4L_STUB_FUNC(g_fbuf) 2793 DEFINE_V4L_STUB_FUNC(s_fbuf) 2794 DEFINE_V4L_STUB_FUNC(expbuf) 2795 DEFINE_V4L_STUB_FUNC(g_std) 2796 DEFINE_V4L_STUB_FUNC(g_audio) 2797 DEFINE_V4L_STUB_FUNC(s_audio) 2798 DEFINE_V4L_STUB_FUNC(g_edid) 2799 DEFINE_V4L_STUB_FUNC(s_edid) 2800 DEFINE_V4L_STUB_FUNC(g_audout) 2801 DEFINE_V4L_STUB_FUNC(s_audout) 2802 DEFINE_V4L_STUB_FUNC(g_jpegcomp) 2803 DEFINE_V4L_STUB_FUNC(s_jpegcomp) 2804 DEFINE_V4L_STUB_FUNC(enumaudio) 2805 DEFINE_V4L_STUB_FUNC(enumaudout) 2806 DEFINE_V4L_STUB_FUNC(enum_framesizes) 2807 DEFINE_V4L_STUB_FUNC(enum_frameintervals) 2808 DEFINE_V4L_STUB_FUNC(g_enc_index) 2809 DEFINE_V4L_STUB_FUNC(encoder_cmd) 2810 DEFINE_V4L_STUB_FUNC(try_encoder_cmd) 2811 DEFINE_V4L_STUB_FUNC(decoder_cmd) 2812 DEFINE_V4L_STUB_FUNC(try_decoder_cmd) 2813 DEFINE_V4L_STUB_FUNC(s_dv_timings) 2814 DEFINE_V4L_STUB_FUNC(g_dv_timings) 2815 DEFINE_V4L_STUB_FUNC(enum_dv_timings) 2816 DEFINE_V4L_STUB_FUNC(query_dv_timings) 2817 DEFINE_V4L_STUB_FUNC(dv_timings_cap) 2818 2819 static const struct v4l2_ioctl_info v4l2_ioctls[] = { 2820 IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0), 2821 IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, 0), 2822 IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0), 2823 IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO), 2824 IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2825 IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)), 2826 IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0), 2827 IOCTL_INFO(VIDIOC_S_FBUF, v4l_stub_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO), 2828 IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO), 2829 IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE), 2830 IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)), 2831 IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE), 2832 IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2833 IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2834 IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)), 2835 IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO), 2836 IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0), 2837 IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO), 2838 IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)), 2839 IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)), 2840 IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)), 2841 IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL), 2842 IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)), 2843 IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO), 2844 IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0), 2845 IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO), 2846 IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)), 2847 IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)), 2848 IOCTL_INFO(VIDIOC_G_INPUT, v4l_g_input, v4l_print_u32, 0), 2849 IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO), 2850 IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY), 2851 IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY), 2852 IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_g_output, v4l_print_u32, 0), 2853 IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO), 2854 IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)), 2855 IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0), 2856 IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO), 2857 IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)), 2858 IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO), 2859 IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)), 2860 IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO), 2861 IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)), 2862 IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)), 2863 IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO), 2864 IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)), 2865 IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)), 2866 IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0), 2867 IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO), 2868 IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0), 2869 IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0), 2870 IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)), 2871 IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)), 2872 IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0), 2873 IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO), 2874 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)), 2875 IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0), 2876 IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY), 2877 IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL | INFO_FL_ALWAYS_COPY), 2878 IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY), 2879 IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)), 2880 IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)), 2881 IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0), 2882 IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2883 IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2884 IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO), 2885 IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0), 2886 IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0), 2887 IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0), 2888 IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO), 2889 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)), 2890 IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0), 2891 IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0), 2892 IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0), 2893 IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0), 2894 IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2895 IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE), 2896 IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)), 2897 IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY), 2898 IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)), 2899 IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0), 2900 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)), 2901 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)), 2902 }; 2903 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) 2904 2905 static bool v4l2_is_known_ioctl(unsigned int cmd) 2906 { 2907 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2908 return false; 2909 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd; 2910 } 2911 2912 static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, 2913 struct v4l2_fh *vfh, unsigned int cmd, 2914 void *arg) 2915 { 2916 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2917 return vdev->lock; 2918 if (vfh && vfh->m2m_ctx && 2919 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) { 2920 if (vfh->m2m_ctx->q_lock) 2921 return vfh->m2m_ctx->q_lock; 2922 } 2923 if (vdev->queue && vdev->queue->lock && 2924 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) 2925 return vdev->queue->lock; 2926 return vdev->lock; 2927 } 2928 2929 /* Common ioctl debug function. This function can be used by 2930 external ioctl messages as well as internal V4L ioctl */ 2931 void v4l_printk_ioctl(const char *prefix, unsigned int cmd) 2932 { 2933 const char *dir, *type; 2934 2935 if (prefix) 2936 printk(KERN_DEBUG "%s: ", prefix); 2937 2938 switch (_IOC_TYPE(cmd)) { 2939 case 'd': 2940 type = "v4l2_int"; 2941 break; 2942 case 'V': 2943 if (_IOC_NR(cmd) >= V4L2_IOCTLS) { 2944 type = "v4l2"; 2945 break; 2946 } 2947 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name); 2948 return; 2949 default: 2950 type = "unknown"; 2951 break; 2952 } 2953 2954 switch (_IOC_DIR(cmd)) { 2955 case _IOC_NONE: dir = "--"; break; 2956 case _IOC_READ: dir = "r-"; break; 2957 case _IOC_WRITE: dir = "-w"; break; 2958 case _IOC_READ | _IOC_WRITE: dir = "rw"; break; 2959 default: dir = "*ERR*"; break; 2960 } 2961 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)", 2962 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd); 2963 } 2964 EXPORT_SYMBOL(v4l_printk_ioctl); 2965 2966 static long __video_do_ioctl(struct file *file, 2967 unsigned int cmd, void *arg) 2968 { 2969 struct video_device *vfd = video_devdata(file); 2970 struct mutex *req_queue_lock = NULL; 2971 struct mutex *lock; /* ioctl serialization mutex */ 2972 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 2973 bool write_only = false; 2974 struct v4l2_ioctl_info default_info; 2975 const struct v4l2_ioctl_info *info; 2976 void *fh = file->private_data; 2977 struct v4l2_fh *vfh = NULL; 2978 int dev_debug = vfd->dev_debug; 2979 long ret = -ENOTTY; 2980 2981 if (ops == NULL) { 2982 pr_warn("%s: has no ioctl_ops.\n", 2983 video_device_node_name(vfd)); 2984 return ret; 2985 } 2986 2987 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 2988 vfh = file->private_data; 2989 2990 /* 2991 * We need to serialize streamon/off with queueing new requests. 2992 * These ioctls may trigger the cancellation of a streaming 2993 * operation, and that should not be mixed with queueing a new 2994 * request at the same time. 2995 */ 2996 if (v4l2_device_supports_requests(vfd->v4l2_dev) && 2997 (cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF)) { 2998 req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex; 2999 3000 if (mutex_lock_interruptible(req_queue_lock)) 3001 return -ERESTARTSYS; 3002 } 3003 3004 lock = v4l2_ioctl_get_lock(vfd, vfh, cmd, arg); 3005 3006 if (lock && mutex_lock_interruptible(lock)) { 3007 if (req_queue_lock) 3008 mutex_unlock(req_queue_lock); 3009 return -ERESTARTSYS; 3010 } 3011 3012 if (!video_is_registered(vfd)) { 3013 ret = -ENODEV; 3014 goto unlock; 3015 } 3016 3017 if (v4l2_is_known_ioctl(cmd)) { 3018 info = &v4l2_ioctls[_IOC_NR(cmd)]; 3019 3020 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) && 3021 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler)) 3022 goto done; 3023 3024 if (vfh && (info->flags & INFO_FL_PRIO)) { 3025 ret = v4l2_prio_check(vfd->prio, vfh->prio); 3026 if (ret) 3027 goto done; 3028 } 3029 } else { 3030 default_info.ioctl = cmd; 3031 default_info.flags = 0; 3032 default_info.debug = v4l_print_default; 3033 info = &default_info; 3034 } 3035 3036 write_only = _IOC_DIR(cmd) == _IOC_WRITE; 3037 if (info != &default_info) { 3038 ret = info->func(ops, file, fh, arg); 3039 } else if (!ops->vidioc_default) { 3040 ret = -ENOTTY; 3041 } else { 3042 ret = ops->vidioc_default(file, fh, 3043 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0, 3044 cmd, arg); 3045 } 3046 3047 done: 3048 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) { 3049 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) && 3050 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF)) 3051 goto unlock; 3052 3053 v4l_printk_ioctl(video_device_node_name(vfd), cmd); 3054 if (ret < 0) 3055 pr_cont(": error %ld", ret); 3056 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG)) 3057 pr_cont("\n"); 3058 else if (_IOC_DIR(cmd) == _IOC_NONE) 3059 info->debug(arg, write_only); 3060 else { 3061 pr_cont(": "); 3062 info->debug(arg, write_only); 3063 } 3064 } 3065 3066 unlock: 3067 if (lock) 3068 mutex_unlock(lock); 3069 if (req_queue_lock) 3070 mutex_unlock(req_queue_lock); 3071 return ret; 3072 } 3073 3074 static int check_array_args(unsigned int cmd, void *parg, size_t *array_size, 3075 void __user **user_ptr, void ***kernel_ptr) 3076 { 3077 int ret = 0; 3078 3079 switch (cmd) { 3080 case VIDIOC_PREPARE_BUF: 3081 case VIDIOC_QUERYBUF: 3082 case VIDIOC_QBUF: 3083 case VIDIOC_DQBUF: { 3084 struct v4l2_buffer *buf = parg; 3085 3086 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) { 3087 if (buf->length > VIDEO_MAX_PLANES) { 3088 ret = -EINVAL; 3089 break; 3090 } 3091 *user_ptr = (void __user *)buf->m.planes; 3092 *kernel_ptr = (void **)&buf->m.planes; 3093 *array_size = sizeof(struct v4l2_plane) * buf->length; 3094 ret = 1; 3095 } 3096 break; 3097 } 3098 3099 case VIDIOC_G_EDID: 3100 case VIDIOC_S_EDID: { 3101 struct v4l2_edid *edid = parg; 3102 3103 if (edid->blocks) { 3104 if (edid->blocks > 256) { 3105 ret = -EINVAL; 3106 break; 3107 } 3108 *user_ptr = (void __user *)edid->edid; 3109 *kernel_ptr = (void **)&edid->edid; 3110 *array_size = edid->blocks * 128; 3111 ret = 1; 3112 } 3113 break; 3114 } 3115 3116 case VIDIOC_S_EXT_CTRLS: 3117 case VIDIOC_G_EXT_CTRLS: 3118 case VIDIOC_TRY_EXT_CTRLS: { 3119 struct v4l2_ext_controls *ctrls = parg; 3120 3121 if (ctrls->count != 0) { 3122 if (ctrls->count > V4L2_CID_MAX_CTRLS) { 3123 ret = -EINVAL; 3124 break; 3125 } 3126 *user_ptr = (void __user *)ctrls->controls; 3127 *kernel_ptr = (void **)&ctrls->controls; 3128 *array_size = sizeof(struct v4l2_ext_control) 3129 * ctrls->count; 3130 ret = 1; 3131 } 3132 break; 3133 } 3134 case VIDIOC_G_FMT: 3135 case VIDIOC_S_FMT: 3136 case VIDIOC_TRY_FMT: { 3137 struct v4l2_format *fmt = parg; 3138 3139 if (fmt->type != V4L2_BUF_TYPE_VIDEO_OVERLAY && 3140 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY) 3141 break; 3142 if (fmt->fmt.win.clipcount > 2048) 3143 return -EINVAL; 3144 if (!fmt->fmt.win.clipcount) 3145 break; 3146 3147 *user_ptr = (void __user *)fmt->fmt.win.clips; 3148 *kernel_ptr = (void **)&fmt->fmt.win.clips; 3149 *array_size = sizeof(struct v4l2_clip) 3150 * fmt->fmt.win.clipcount; 3151 3152 ret = 1; 3153 break; 3154 } 3155 } 3156 3157 return ret; 3158 } 3159 3160 static unsigned int video_translate_cmd(unsigned int cmd) 3161 { 3162 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3163 switch (cmd) { 3164 case VIDIOC_DQEVENT_TIME32: 3165 return VIDIOC_DQEVENT; 3166 case VIDIOC_QUERYBUF_TIME32: 3167 return VIDIOC_QUERYBUF; 3168 case VIDIOC_QBUF_TIME32: 3169 return VIDIOC_QBUF; 3170 case VIDIOC_DQBUF_TIME32: 3171 return VIDIOC_DQBUF; 3172 case VIDIOC_PREPARE_BUF_TIME32: 3173 return VIDIOC_PREPARE_BUF; 3174 } 3175 #endif 3176 if (in_compat_syscall()) 3177 return v4l2_compat_translate_cmd(cmd); 3178 3179 return cmd; 3180 } 3181 3182 static int video_get_user(void __user *arg, void *parg, 3183 unsigned int real_cmd, unsigned int cmd, 3184 bool *always_copy) 3185 { 3186 unsigned int n = _IOC_SIZE(real_cmd); 3187 int err = 0; 3188 3189 if (!(_IOC_DIR(cmd) & _IOC_WRITE)) { 3190 /* read-only ioctl */ 3191 memset(parg, 0, n); 3192 return 0; 3193 } 3194 3195 /* 3196 * In some cases, only a few fields are used as input, 3197 * i.e. when the app sets "index" and then the driver 3198 * fills in the rest of the structure for the thing 3199 * with that index. We only need to copy up the first 3200 * non-input field. 3201 */ 3202 if (v4l2_is_known_ioctl(real_cmd)) { 3203 u32 flags = v4l2_ioctls[_IOC_NR(real_cmd)].flags; 3204 3205 if (flags & INFO_FL_CLEAR_MASK) 3206 n = (flags & INFO_FL_CLEAR_MASK) >> 16; 3207 *always_copy = flags & INFO_FL_ALWAYS_COPY; 3208 } 3209 3210 if (cmd == real_cmd) { 3211 if (copy_from_user(parg, (void __user *)arg, n)) 3212 err = -EFAULT; 3213 } else if (in_compat_syscall()) { 3214 memset(parg, 0, n); 3215 err = v4l2_compat_get_user(arg, parg, cmd); 3216 } else { 3217 memset(parg, 0, n); 3218 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3219 switch (cmd) { 3220 case VIDIOC_QUERYBUF_TIME32: 3221 case VIDIOC_QBUF_TIME32: 3222 case VIDIOC_DQBUF_TIME32: 3223 case VIDIOC_PREPARE_BUF_TIME32: { 3224 struct v4l2_buffer_time32 vb32; 3225 struct v4l2_buffer *vb = parg; 3226 3227 if (copy_from_user(&vb32, arg, sizeof(vb32))) 3228 return -EFAULT; 3229 3230 *vb = (struct v4l2_buffer) { 3231 .index = vb32.index, 3232 .type = vb32.type, 3233 .bytesused = vb32.bytesused, 3234 .flags = vb32.flags, 3235 .field = vb32.field, 3236 .timestamp.tv_sec = vb32.timestamp.tv_sec, 3237 .timestamp.tv_usec = vb32.timestamp.tv_usec, 3238 .timecode = vb32.timecode, 3239 .sequence = vb32.sequence, 3240 .memory = vb32.memory, 3241 .m.userptr = vb32.m.userptr, 3242 .length = vb32.length, 3243 .request_fd = vb32.request_fd, 3244 }; 3245 break; 3246 } 3247 } 3248 #endif 3249 } 3250 3251 /* zero out anything we don't copy from userspace */ 3252 if (!err && n < _IOC_SIZE(real_cmd)) 3253 memset((u8 *)parg + n, 0, _IOC_SIZE(real_cmd) - n); 3254 return err; 3255 } 3256 3257 static int video_put_user(void __user *arg, void *parg, 3258 unsigned int real_cmd, unsigned int cmd) 3259 { 3260 if (!(_IOC_DIR(cmd) & _IOC_READ)) 3261 return 0; 3262 3263 if (cmd == real_cmd) { 3264 /* Copy results into user buffer */ 3265 if (copy_to_user(arg, parg, _IOC_SIZE(cmd))) 3266 return -EFAULT; 3267 return 0; 3268 } 3269 3270 if (in_compat_syscall()) 3271 return v4l2_compat_put_user(arg, parg, cmd); 3272 3273 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME) 3274 switch (cmd) { 3275 case VIDIOC_DQEVENT_TIME32: { 3276 struct v4l2_event *ev = parg; 3277 struct v4l2_event_time32 ev32; 3278 3279 memset(&ev32, 0, sizeof(ev32)); 3280 3281 ev32.type = ev->type; 3282 ev32.pending = ev->pending; 3283 ev32.sequence = ev->sequence; 3284 ev32.timestamp.tv_sec = ev->timestamp.tv_sec; 3285 ev32.timestamp.tv_nsec = ev->timestamp.tv_nsec; 3286 ev32.id = ev->id; 3287 3288 memcpy(&ev32.u, &ev->u, sizeof(ev->u)); 3289 memcpy(&ev32.reserved, &ev->reserved, sizeof(ev->reserved)); 3290 3291 if (copy_to_user(arg, &ev32, sizeof(ev32))) 3292 return -EFAULT; 3293 break; 3294 } 3295 case VIDIOC_QUERYBUF_TIME32: 3296 case VIDIOC_QBUF_TIME32: 3297 case VIDIOC_DQBUF_TIME32: 3298 case VIDIOC_PREPARE_BUF_TIME32: { 3299 struct v4l2_buffer *vb = parg; 3300 struct v4l2_buffer_time32 vb32; 3301 3302 memset(&vb32, 0, sizeof(vb32)); 3303 3304 vb32.index = vb->index; 3305 vb32.type = vb->type; 3306 vb32.bytesused = vb->bytesused; 3307 vb32.flags = vb->flags; 3308 vb32.field = vb->field; 3309 vb32.timestamp.tv_sec = vb->timestamp.tv_sec; 3310 vb32.timestamp.tv_usec = vb->timestamp.tv_usec; 3311 vb32.timecode = vb->timecode; 3312 vb32.sequence = vb->sequence; 3313 vb32.memory = vb->memory; 3314 vb32.m.userptr = vb->m.userptr; 3315 vb32.length = vb->length; 3316 vb32.request_fd = vb->request_fd; 3317 3318 if (copy_to_user(arg, &vb32, sizeof(vb32))) 3319 return -EFAULT; 3320 break; 3321 } 3322 } 3323 #endif 3324 3325 return 0; 3326 } 3327 3328 long 3329 video_usercopy(struct file *file, unsigned int orig_cmd, unsigned long arg, 3330 v4l2_kioctl func) 3331 { 3332 char sbuf[128]; 3333 void *mbuf = NULL, *array_buf = NULL; 3334 void *parg = (void *)arg; 3335 long err = -EINVAL; 3336 bool has_array_args; 3337 bool always_copy = false; 3338 size_t array_size = 0; 3339 void __user *user_ptr = NULL; 3340 void **kernel_ptr = NULL; 3341 unsigned int cmd = video_translate_cmd(orig_cmd); 3342 const size_t ioc_size = _IOC_SIZE(cmd); 3343 3344 /* Copy arguments into temp kernel buffer */ 3345 if (_IOC_DIR(cmd) != _IOC_NONE) { 3346 if (ioc_size <= sizeof(sbuf)) { 3347 parg = sbuf; 3348 } else { 3349 /* too big to allocate from stack */ 3350 mbuf = kmalloc(ioc_size, GFP_KERNEL); 3351 if (NULL == mbuf) 3352 return -ENOMEM; 3353 parg = mbuf; 3354 } 3355 3356 err = video_get_user((void __user *)arg, parg, cmd, 3357 orig_cmd, &always_copy); 3358 if (err) 3359 goto out; 3360 } 3361 3362 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr); 3363 if (err < 0) 3364 goto out; 3365 has_array_args = err; 3366 3367 if (has_array_args) { 3368 array_buf = kvmalloc(array_size, GFP_KERNEL); 3369 err = -ENOMEM; 3370 if (array_buf == NULL) 3371 goto out; 3372 if (in_compat_syscall()) 3373 err = v4l2_compat_get_array_args(file, array_buf, 3374 user_ptr, array_size, 3375 orig_cmd, parg); 3376 else 3377 err = copy_from_user(array_buf, user_ptr, array_size) ? 3378 -EFAULT : 0; 3379 if (err) 3380 goto out; 3381 *kernel_ptr = array_buf; 3382 } 3383 3384 /* Handles IOCTL */ 3385 err = func(file, cmd, parg); 3386 if (err == -ENOTTY || err == -ENOIOCTLCMD) { 3387 err = -ENOTTY; 3388 goto out; 3389 } 3390 3391 if (err == 0) { 3392 if (cmd == VIDIOC_DQBUF) 3393 trace_v4l2_dqbuf(video_devdata(file)->minor, parg); 3394 else if (cmd == VIDIOC_QBUF) 3395 trace_v4l2_qbuf(video_devdata(file)->minor, parg); 3396 } 3397 3398 /* 3399 * Some ioctls can return an error, but still have valid 3400 * results that must be returned. 3401 */ 3402 if (err < 0 && !always_copy) 3403 goto out; 3404 3405 if (has_array_args) { 3406 *kernel_ptr = (void __force *)user_ptr; 3407 if (in_compat_syscall()) { 3408 int put_err; 3409 3410 put_err = v4l2_compat_put_array_args(file, user_ptr, 3411 array_buf, 3412 array_size, 3413 orig_cmd, parg); 3414 if (put_err) 3415 err = put_err; 3416 } else if (copy_to_user(user_ptr, array_buf, array_size)) { 3417 err = -EFAULT; 3418 } 3419 } 3420 3421 if (video_put_user((void __user *)arg, parg, cmd, orig_cmd)) 3422 err = -EFAULT; 3423 out: 3424 kvfree(array_buf); 3425 kfree(mbuf); 3426 return err; 3427 } 3428 3429 long video_ioctl2(struct file *file, 3430 unsigned int cmd, unsigned long arg) 3431 { 3432 return video_usercopy(file, cmd, arg, __video_do_ioctl); 3433 } 3434 EXPORT_SYMBOL(video_ioctl2); 3435