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