1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Video capture interface for Linux version 2 4 * 5 * A generic framework to process V4L2 ioctl commands. 6 * 7 * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1) 8 * Mauro Carvalho Chehab <mchehab@kernel.org> (version 2) 9 */ 10 11 #include <linux/mm.h> 12 #include <linux/module.h> 13 #include <linux/slab.h> 14 #include <linux/types.h> 15 #include <linux/kernel.h> 16 #include <linux/version.h> 17 18 #include <linux/videodev2.h> 19 20 #include <media/v4l2-common.h> 21 #include <media/v4l2-ioctl.h> 22 #include <media/v4l2-ctrls.h> 23 #include <media/v4l2-fh.h> 24 #include <media/v4l2-event.h> 25 #include <media/v4l2-device.h> 26 #include <media/videobuf2-v4l2.h> 27 #include <media/v4l2-mc.h> 28 #include <media/v4l2-mem2mem.h> 29 30 #include <trace/events/v4l2.h> 31 32 /* Zero out the end of the struct pointed to by p. Everything after, but 33 * not including, the specified field is cleared. */ 34 #define CLEAR_AFTER_FIELD(p, field) \ 35 memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \ 36 0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field)) 37 38 #define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls) 39 40 struct std_descr { 41 v4l2_std_id std; 42 const char *descr; 43 }; 44 45 static const struct std_descr standards[] = { 46 { V4L2_STD_NTSC, "NTSC" }, 47 { V4L2_STD_NTSC_M, "NTSC-M" }, 48 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" }, 49 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" }, 50 { V4L2_STD_NTSC_443, "NTSC-443" }, 51 { V4L2_STD_PAL, "PAL" }, 52 { V4L2_STD_PAL_BG, "PAL-BG" }, 53 { V4L2_STD_PAL_B, "PAL-B" }, 54 { V4L2_STD_PAL_B1, "PAL-B1" }, 55 { V4L2_STD_PAL_G, "PAL-G" }, 56 { V4L2_STD_PAL_H, "PAL-H" }, 57 { V4L2_STD_PAL_I, "PAL-I" }, 58 { V4L2_STD_PAL_DK, "PAL-DK" }, 59 { V4L2_STD_PAL_D, "PAL-D" }, 60 { V4L2_STD_PAL_D1, "PAL-D1" }, 61 { V4L2_STD_PAL_K, "PAL-K" }, 62 { V4L2_STD_PAL_M, "PAL-M" }, 63 { V4L2_STD_PAL_N, "PAL-N" }, 64 { V4L2_STD_PAL_Nc, "PAL-Nc" }, 65 { V4L2_STD_PAL_60, "PAL-60" }, 66 { V4L2_STD_SECAM, "SECAM" }, 67 { V4L2_STD_SECAM_B, "SECAM-B" }, 68 { V4L2_STD_SECAM_G, "SECAM-G" }, 69 { V4L2_STD_SECAM_H, "SECAM-H" }, 70 { V4L2_STD_SECAM_DK, "SECAM-DK" }, 71 { V4L2_STD_SECAM_D, "SECAM-D" }, 72 { V4L2_STD_SECAM_K, "SECAM-K" }, 73 { V4L2_STD_SECAM_K1, "SECAM-K1" }, 74 { V4L2_STD_SECAM_L, "SECAM-L" }, 75 { V4L2_STD_SECAM_LC, "SECAM-Lc" }, 76 { 0, "Unknown" } 77 }; 78 79 /* video4linux standard ID conversion to standard name 80 */ 81 const char *v4l2_norm_to_name(v4l2_std_id id) 82 { 83 u32 myid = id; 84 int i; 85 86 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle 87 64 bit comparisons. So, on that architecture, with some gcc 88 variants, compilation fails. Currently, the max value is 30bit wide. 89 */ 90 BUG_ON(myid != id); 91 92 for (i = 0; standards[i].std; i++) 93 if (myid == standards[i].std) 94 break; 95 return standards[i].descr; 96 } 97 EXPORT_SYMBOL(v4l2_norm_to_name); 98 99 /* Returns frame period for the given standard */ 100 void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod) 101 { 102 if (id & V4L2_STD_525_60) { 103 frameperiod->numerator = 1001; 104 frameperiod->denominator = 30000; 105 } else { 106 frameperiod->numerator = 1; 107 frameperiod->denominator = 25; 108 } 109 } 110 EXPORT_SYMBOL(v4l2_video_std_frame_period); 111 112 /* Fill in the fields of a v4l2_standard structure according to the 113 'id' and 'transmission' parameters. Returns negative on error. */ 114 int v4l2_video_std_construct(struct v4l2_standard *vs, 115 int id, const char *name) 116 { 117 vs->id = id; 118 v4l2_video_std_frame_period(id, &vs->frameperiod); 119 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625; 120 strscpy(vs->name, name, sizeof(vs->name)); 121 return 0; 122 } 123 EXPORT_SYMBOL(v4l2_video_std_construct); 124 125 /* Fill in the fields of a v4l2_standard structure according to the 126 * 'id' and 'vs->index' parameters. Returns negative on error. */ 127 int v4l_video_std_enumstd(struct v4l2_standard *vs, v4l2_std_id id) 128 { 129 v4l2_std_id curr_id = 0; 130 unsigned int index = vs->index, i, j = 0; 131 const char *descr = ""; 132 133 /* Return -ENODATA if the id for the current input 134 or output is 0, meaning that it doesn't support this API. */ 135 if (id == 0) 136 return -ENODATA; 137 138 /* Return norm array in a canonical way */ 139 for (i = 0; i <= index && id; i++) { 140 /* last std value in the standards array is 0, so this 141 while always ends there since (id & 0) == 0. */ 142 while ((id & standards[j].std) != standards[j].std) 143 j++; 144 curr_id = standards[j].std; 145 descr = standards[j].descr; 146 j++; 147 if (curr_id == 0) 148 break; 149 if (curr_id != V4L2_STD_PAL && 150 curr_id != V4L2_STD_SECAM && 151 curr_id != V4L2_STD_NTSC) 152 id &= ~curr_id; 153 } 154 if (i <= index) 155 return -EINVAL; 156 157 v4l2_video_std_construct(vs, curr_id, descr); 158 return 0; 159 } 160 161 /* ----------------------------------------------------------------- */ 162 /* some arrays for pretty-printing debug messages of enum types */ 163 164 const char *v4l2_field_names[] = { 165 [V4L2_FIELD_ANY] = "any", 166 [V4L2_FIELD_NONE] = "none", 167 [V4L2_FIELD_TOP] = "top", 168 [V4L2_FIELD_BOTTOM] = "bottom", 169 [V4L2_FIELD_INTERLACED] = "interlaced", 170 [V4L2_FIELD_SEQ_TB] = "seq-tb", 171 [V4L2_FIELD_SEQ_BT] = "seq-bt", 172 [V4L2_FIELD_ALTERNATE] = "alternate", 173 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb", 174 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt", 175 }; 176 EXPORT_SYMBOL(v4l2_field_names); 177 178 const char *v4l2_type_names[] = { 179 [0] = "0", 180 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap", 181 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay", 182 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out", 183 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap", 184 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out", 185 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap", 186 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out", 187 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay", 188 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane", 189 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane", 190 [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap", 191 [V4L2_BUF_TYPE_SDR_OUTPUT] = "sdr-out", 192 [V4L2_BUF_TYPE_META_CAPTURE] = "meta-cap", 193 [V4L2_BUF_TYPE_META_OUTPUT] = "meta-out", 194 }; 195 EXPORT_SYMBOL(v4l2_type_names); 196 197 static const char *v4l2_memory_names[] = { 198 [V4L2_MEMORY_MMAP] = "mmap", 199 [V4L2_MEMORY_USERPTR] = "userptr", 200 [V4L2_MEMORY_OVERLAY] = "overlay", 201 [V4L2_MEMORY_DMABUF] = "dmabuf", 202 }; 203 204 #define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown") 205 206 /* ------------------------------------------------------------------ */ 207 /* debug help functions */ 208 209 static void v4l_print_querycap(const void *arg, bool write_only) 210 { 211 const struct v4l2_capability *p = arg; 212 213 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, capabilities=0x%08x, device_caps=0x%08x\n", 214 (int)sizeof(p->driver), p->driver, 215 (int)sizeof(p->card), p->card, 216 (int)sizeof(p->bus_info), p->bus_info, 217 p->version, p->capabilities, p->device_caps); 218 } 219 220 static void v4l_print_enuminput(const void *arg, bool write_only) 221 { 222 const struct v4l2_input *p = arg; 223 224 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, std=0x%08Lx, status=0x%x, capabilities=0x%x\n", 225 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, 226 p->tuner, (unsigned long long)p->std, p->status, 227 p->capabilities); 228 } 229 230 static void v4l_print_enumoutput(const void *arg, bool write_only) 231 { 232 const struct v4l2_output *p = arg; 233 234 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, modulator=%u, std=0x%08Lx, capabilities=0x%x\n", 235 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, 236 p->modulator, (unsigned long long)p->std, p->capabilities); 237 } 238 239 static void v4l_print_audio(const void *arg, bool write_only) 240 { 241 const struct v4l2_audio *p = arg; 242 243 if (write_only) 244 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode); 245 else 246 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", 247 p->index, (int)sizeof(p->name), p->name, 248 p->capability, p->mode); 249 } 250 251 static void v4l_print_audioout(const void *arg, bool write_only) 252 { 253 const struct v4l2_audioout *p = arg; 254 255 if (write_only) 256 pr_cont("index=%u\n", p->index); 257 else 258 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", 259 p->index, (int)sizeof(p->name), p->name, 260 p->capability, p->mode); 261 } 262 263 static void v4l_print_fmtdesc(const void *arg, bool write_only) 264 { 265 const struct v4l2_fmtdesc *p = arg; 266 267 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%c%c%c%c, description='%.*s'\n", 268 p->index, prt_names(p->type, v4l2_type_names), 269 p->flags, (p->pixelformat & 0xff), 270 (p->pixelformat >> 8) & 0xff, 271 (p->pixelformat >> 16) & 0xff, 272 (p->pixelformat >> 24) & 0xff, 273 (int)sizeof(p->description), p->description); 274 } 275 276 static void v4l_print_format(const void *arg, bool write_only) 277 { 278 const struct v4l2_format *p = arg; 279 const struct v4l2_pix_format *pix; 280 const struct v4l2_pix_format_mplane *mp; 281 const struct v4l2_vbi_format *vbi; 282 const struct v4l2_sliced_vbi_format *sliced; 283 const struct v4l2_window *win; 284 const struct v4l2_sdr_format *sdr; 285 const struct v4l2_meta_format *meta; 286 u32 planes; 287 unsigned i; 288 289 pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); 290 switch (p->type) { 291 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 292 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 293 pix = &p->fmt.pix; 294 pr_cont(", width=%u, height=%u, pixelformat=%c%c%c%c, field=%s, bytesperline=%u, sizeimage=%u, colorspace=%d, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n", 295 pix->width, pix->height, 296 (pix->pixelformat & 0xff), 297 (pix->pixelformat >> 8) & 0xff, 298 (pix->pixelformat >> 16) & 0xff, 299 (pix->pixelformat >> 24) & 0xff, 300 prt_names(pix->field, v4l2_field_names), 301 pix->bytesperline, pix->sizeimage, 302 pix->colorspace, pix->flags, pix->ycbcr_enc, 303 pix->quantization, pix->xfer_func); 304 break; 305 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 306 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 307 mp = &p->fmt.pix_mp; 308 pr_cont(", width=%u, height=%u, format=%c%c%c%c, field=%s, colorspace=%d, num_planes=%u, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n", 309 mp->width, mp->height, 310 (mp->pixelformat & 0xff), 311 (mp->pixelformat >> 8) & 0xff, 312 (mp->pixelformat >> 16) & 0xff, 313 (mp->pixelformat >> 24) & 0xff, 314 prt_names(mp->field, v4l2_field_names), 315 mp->colorspace, mp->num_planes, mp->flags, 316 mp->ycbcr_enc, mp->quantization, mp->xfer_func); 317 planes = min_t(u32, mp->num_planes, VIDEO_MAX_PLANES); 318 for (i = 0; i < planes; i++) 319 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i, 320 mp->plane_fmt[i].bytesperline, 321 mp->plane_fmt[i].sizeimage); 322 break; 323 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 324 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 325 win = &p->fmt.win; 326 /* Note: we can't print the clip list here since the clips 327 * pointer is a userspace pointer, not a kernelspace 328 * pointer. */ 329 pr_cont(", wxh=%dx%d, x,y=%d,%d, field=%s, chromakey=0x%08x, clipcount=%u, clips=%p, bitmap=%p, global_alpha=0x%02x\n", 330 win->w.width, win->w.height, win->w.left, win->w.top, 331 prt_names(win->field, v4l2_field_names), 332 win->chromakey, win->clipcount, win->clips, 333 win->bitmap, win->global_alpha); 334 break; 335 case V4L2_BUF_TYPE_VBI_CAPTURE: 336 case V4L2_BUF_TYPE_VBI_OUTPUT: 337 vbi = &p->fmt.vbi; 338 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n", 339 vbi->sampling_rate, vbi->offset, 340 vbi->samples_per_line, 341 (vbi->sample_format & 0xff), 342 (vbi->sample_format >> 8) & 0xff, 343 (vbi->sample_format >> 16) & 0xff, 344 (vbi->sample_format >> 24) & 0xff, 345 vbi->start[0], vbi->start[1], 346 vbi->count[0], vbi->count[1]); 347 break; 348 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 349 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 350 sliced = &p->fmt.sliced; 351 pr_cont(", service_set=0x%08x, io_size=%d\n", 352 sliced->service_set, sliced->io_size); 353 for (i = 0; i < 24; i++) 354 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, 355 sliced->service_lines[0][i], 356 sliced->service_lines[1][i]); 357 break; 358 case V4L2_BUF_TYPE_SDR_CAPTURE: 359 case V4L2_BUF_TYPE_SDR_OUTPUT: 360 sdr = &p->fmt.sdr; 361 pr_cont(", pixelformat=%c%c%c%c\n", 362 (sdr->pixelformat >> 0) & 0xff, 363 (sdr->pixelformat >> 8) & 0xff, 364 (sdr->pixelformat >> 16) & 0xff, 365 (sdr->pixelformat >> 24) & 0xff); 366 break; 367 case V4L2_BUF_TYPE_META_CAPTURE: 368 case V4L2_BUF_TYPE_META_OUTPUT: 369 meta = &p->fmt.meta; 370 pr_cont(", dataformat=%c%c%c%c, buffersize=%u\n", 371 (meta->dataformat >> 0) & 0xff, 372 (meta->dataformat >> 8) & 0xff, 373 (meta->dataformat >> 16) & 0xff, 374 (meta->dataformat >> 24) & 0xff, 375 meta->buffersize); 376 break; 377 } 378 } 379 380 static void v4l_print_framebuffer(const void *arg, bool write_only) 381 { 382 const struct v4l2_framebuffer *p = arg; 383 384 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, height=%u, pixelformat=%c%c%c%c, bytesperline=%u, sizeimage=%u, colorspace=%d\n", 385 p->capability, p->flags, p->base, 386 p->fmt.width, p->fmt.height, 387 (p->fmt.pixelformat & 0xff), 388 (p->fmt.pixelformat >> 8) & 0xff, 389 (p->fmt.pixelformat >> 16) & 0xff, 390 (p->fmt.pixelformat >> 24) & 0xff, 391 p->fmt.bytesperline, p->fmt.sizeimage, 392 p->fmt.colorspace); 393 } 394 395 static void v4l_print_buftype(const void *arg, bool write_only) 396 { 397 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names)); 398 } 399 400 static void v4l_print_modulator(const void *arg, bool write_only) 401 { 402 const struct v4l2_modulator *p = arg; 403 404 if (write_only) 405 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans); 406 else 407 pr_cont("index=%u, name=%.*s, capability=0x%x, rangelow=%u, rangehigh=%u, txsubchans=0x%x\n", 408 p->index, (int)sizeof(p->name), p->name, p->capability, 409 p->rangelow, p->rangehigh, p->txsubchans); 410 } 411 412 static void v4l_print_tuner(const void *arg, bool write_only) 413 { 414 const struct v4l2_tuner *p = arg; 415 416 if (write_only) 417 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode); 418 else 419 pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, rangelow=%u, rangehigh=%u, signal=%u, afc=%d, rxsubchans=0x%x, audmode=%u\n", 420 p->index, (int)sizeof(p->name), p->name, p->type, 421 p->capability, p->rangelow, 422 p->rangehigh, p->signal, p->afc, 423 p->rxsubchans, p->audmode); 424 } 425 426 static void v4l_print_frequency(const void *arg, bool write_only) 427 { 428 const struct v4l2_frequency *p = arg; 429 430 pr_cont("tuner=%u, type=%u, frequency=%u\n", 431 p->tuner, p->type, p->frequency); 432 } 433 434 static void v4l_print_standard(const void *arg, bool write_only) 435 { 436 const struct v4l2_standard *p = arg; 437 438 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, framelines=%u\n", 439 p->index, 440 (unsigned long long)p->id, (int)sizeof(p->name), p->name, 441 p->frameperiod.numerator, 442 p->frameperiod.denominator, 443 p->framelines); 444 } 445 446 static void v4l_print_std(const void *arg, bool write_only) 447 { 448 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg); 449 } 450 451 static void v4l_print_hw_freq_seek(const void *arg, bool write_only) 452 { 453 const struct v4l2_hw_freq_seek *p = arg; 454 455 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, rangelow=%u, rangehigh=%u\n", 456 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing, 457 p->rangelow, p->rangehigh); 458 } 459 460 static void v4l_print_requestbuffers(const void *arg, bool write_only) 461 { 462 const struct v4l2_requestbuffers *p = arg; 463 464 pr_cont("count=%d, type=%s, memory=%s\n", 465 p->count, 466 prt_names(p->type, v4l2_type_names), 467 prt_names(p->memory, v4l2_memory_names)); 468 } 469 470 static void v4l_print_buffer(const void *arg, bool write_only) 471 { 472 const struct v4l2_buffer *p = arg; 473 const struct v4l2_timecode *tc = &p->timecode; 474 const struct v4l2_plane *plane; 475 int i; 476 477 pr_cont("%02d:%02d:%02d.%09ld index=%d, type=%s, request_fd=%d, flags=0x%08x, field=%s, sequence=%d, memory=%s", 478 (int)p->timestamp.tv_sec / 3600, 479 ((int)p->timestamp.tv_sec / 60) % 60, 480 ((int)p->timestamp.tv_sec % 60), 481 (long)p->timestamp.tv_usec, 482 p->index, 483 prt_names(p->type, v4l2_type_names), p->request_fd, 484 p->flags, prt_names(p->field, v4l2_field_names), 485 p->sequence, prt_names(p->memory, v4l2_memory_names)); 486 487 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) { 488 pr_cont("\n"); 489 for (i = 0; i < p->length; ++i) { 490 plane = &p->m.planes[i]; 491 printk(KERN_DEBUG 492 "plane %d: bytesused=%d, data_offset=0x%08x, offset/userptr=0x%lx, length=%d\n", 493 i, plane->bytesused, plane->data_offset, 494 plane->m.userptr, plane->length); 495 } 496 } else { 497 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n", 498 p->bytesused, p->m.userptr, p->length); 499 } 500 501 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, flags=0x%08x, frames=%d, userbits=0x%08x\n", 502 tc->hours, tc->minutes, tc->seconds, 503 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits); 504 } 505 506 static void v4l_print_exportbuffer(const void *arg, bool write_only) 507 { 508 const struct v4l2_exportbuffer *p = arg; 509 510 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n", 511 p->fd, prt_names(p->type, v4l2_type_names), 512 p->index, p->plane, p->flags); 513 } 514 515 static void v4l_print_create_buffers(const void *arg, bool write_only) 516 { 517 const struct v4l2_create_buffers *p = arg; 518 519 pr_cont("index=%d, count=%d, memory=%s, ", 520 p->index, p->count, 521 prt_names(p->memory, v4l2_memory_names)); 522 v4l_print_format(&p->format, write_only); 523 } 524 525 static void v4l_print_streamparm(const void *arg, bool write_only) 526 { 527 const struct v4l2_streamparm *p = arg; 528 529 pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); 530 531 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 532 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) { 533 const struct v4l2_captureparm *c = &p->parm.capture; 534 535 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, extendedmode=%d, readbuffers=%d\n", 536 c->capability, c->capturemode, 537 c->timeperframe.numerator, c->timeperframe.denominator, 538 c->extendedmode, c->readbuffers); 539 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT || 540 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { 541 const struct v4l2_outputparm *c = &p->parm.output; 542 543 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, extendedmode=%d, writebuffers=%d\n", 544 c->capability, c->outputmode, 545 c->timeperframe.numerator, c->timeperframe.denominator, 546 c->extendedmode, c->writebuffers); 547 } else { 548 pr_cont("\n"); 549 } 550 } 551 552 static void v4l_print_queryctrl(const void *arg, bool write_only) 553 { 554 const struct v4l2_queryctrl *p = arg; 555 556 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, step=%d, default=%d, flags=0x%08x\n", 557 p->id, p->type, (int)sizeof(p->name), p->name, 558 p->minimum, p->maximum, 559 p->step, p->default_value, p->flags); 560 } 561 562 static void v4l_print_query_ext_ctrl(const void *arg, bool write_only) 563 { 564 const struct v4l2_query_ext_ctrl *p = arg; 565 566 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%lld/%lld, step=%lld, default=%lld, flags=0x%08x, elem_size=%u, elems=%u, nr_of_dims=%u, dims=%u,%u,%u,%u\n", 567 p->id, p->type, (int)sizeof(p->name), p->name, 568 p->minimum, p->maximum, 569 p->step, p->default_value, p->flags, 570 p->elem_size, p->elems, p->nr_of_dims, 571 p->dims[0], p->dims[1], p->dims[2], p->dims[3]); 572 } 573 574 static void v4l_print_querymenu(const void *arg, bool write_only) 575 { 576 const struct v4l2_querymenu *p = arg; 577 578 pr_cont("id=0x%x, index=%d\n", p->id, p->index); 579 } 580 581 static void v4l_print_control(const void *arg, bool write_only) 582 { 583 const struct v4l2_control *p = arg; 584 585 pr_cont("id=0x%x, value=%d\n", p->id, p->value); 586 } 587 588 static void v4l_print_ext_controls(const void *arg, bool write_only) 589 { 590 const struct v4l2_ext_controls *p = arg; 591 int i; 592 593 pr_cont("which=0x%x, count=%d, error_idx=%d, request_fd=%d", 594 p->which, p->count, p->error_idx, p->request_fd); 595 for (i = 0; i < p->count; i++) { 596 if (!p->controls[i].size) 597 pr_cont(", id/val=0x%x/0x%x", 598 p->controls[i].id, p->controls[i].value); 599 else 600 pr_cont(", id/size=0x%x/%u", 601 p->controls[i].id, p->controls[i].size); 602 } 603 pr_cont("\n"); 604 } 605 606 static void v4l_print_cropcap(const void *arg, bool write_only) 607 { 608 const struct v4l2_cropcap *p = arg; 609 610 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, defrect wxh=%dx%d, x,y=%d,%d, pixelaspect %d/%d\n", 611 prt_names(p->type, v4l2_type_names), 612 p->bounds.width, p->bounds.height, 613 p->bounds.left, p->bounds.top, 614 p->defrect.width, p->defrect.height, 615 p->defrect.left, p->defrect.top, 616 p->pixelaspect.numerator, p->pixelaspect.denominator); 617 } 618 619 static void v4l_print_crop(const void *arg, bool write_only) 620 { 621 const struct v4l2_crop *p = arg; 622 623 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n", 624 prt_names(p->type, v4l2_type_names), 625 p->c.width, p->c.height, 626 p->c.left, p->c.top); 627 } 628 629 static void v4l_print_selection(const void *arg, bool write_only) 630 { 631 const struct v4l2_selection *p = arg; 632 633 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n", 634 prt_names(p->type, v4l2_type_names), 635 p->target, p->flags, 636 p->r.width, p->r.height, p->r.left, p->r.top); 637 } 638 639 static void v4l_print_jpegcompression(const void *arg, bool write_only) 640 { 641 const struct v4l2_jpegcompression *p = arg; 642 643 pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n", 644 p->quality, p->APPn, p->APP_len, 645 p->COM_len, p->jpeg_markers); 646 } 647 648 static void v4l_print_enc_idx(const void *arg, bool write_only) 649 { 650 const struct v4l2_enc_idx *p = arg; 651 652 pr_cont("entries=%d, entries_cap=%d\n", 653 p->entries, p->entries_cap); 654 } 655 656 static void v4l_print_encoder_cmd(const void *arg, bool write_only) 657 { 658 const struct v4l2_encoder_cmd *p = arg; 659 660 pr_cont("cmd=%d, flags=0x%x\n", 661 p->cmd, p->flags); 662 } 663 664 static void v4l_print_decoder_cmd(const void *arg, bool write_only) 665 { 666 const struct v4l2_decoder_cmd *p = arg; 667 668 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags); 669 670 if (p->cmd == V4L2_DEC_CMD_START) 671 pr_info("speed=%d, format=%u\n", 672 p->start.speed, p->start.format); 673 else if (p->cmd == V4L2_DEC_CMD_STOP) 674 pr_info("pts=%llu\n", p->stop.pts); 675 } 676 677 static void v4l_print_dbg_chip_info(const void *arg, bool write_only) 678 { 679 const struct v4l2_dbg_chip_info *p = arg; 680 681 pr_cont("type=%u, ", p->match.type); 682 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 683 pr_cont("name=%.*s, ", 684 (int)sizeof(p->match.name), p->match.name); 685 else 686 pr_cont("addr=%u, ", p->match.addr); 687 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name); 688 } 689 690 static void v4l_print_dbg_register(const void *arg, bool write_only) 691 { 692 const struct v4l2_dbg_register *p = arg; 693 694 pr_cont("type=%u, ", p->match.type); 695 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 696 pr_cont("name=%.*s, ", 697 (int)sizeof(p->match.name), p->match.name); 698 else 699 pr_cont("addr=%u, ", p->match.addr); 700 pr_cont("reg=0x%llx, val=0x%llx\n", 701 p->reg, p->val); 702 } 703 704 static void v4l_print_dv_timings(const void *arg, bool write_only) 705 { 706 const struct v4l2_dv_timings *p = arg; 707 708 switch (p->type) { 709 case V4L2_DV_BT_656_1120: 710 pr_cont("type=bt-656/1120, interlaced=%u, pixelclock=%llu, width=%u, height=%u, polarities=0x%x, hfrontporch=%u, hsync=%u, hbackporch=%u, vfrontporch=%u, vsync=%u, vbackporch=%u, il_vfrontporch=%u, il_vsync=%u, il_vbackporch=%u, standards=0x%x, flags=0x%x\n", 711 p->bt.interlaced, p->bt.pixelclock, 712 p->bt.width, p->bt.height, 713 p->bt.polarities, p->bt.hfrontporch, 714 p->bt.hsync, p->bt.hbackporch, 715 p->bt.vfrontporch, p->bt.vsync, 716 p->bt.vbackporch, p->bt.il_vfrontporch, 717 p->bt.il_vsync, p->bt.il_vbackporch, 718 p->bt.standards, p->bt.flags); 719 break; 720 default: 721 pr_cont("type=%d\n", p->type); 722 break; 723 } 724 } 725 726 static void v4l_print_enum_dv_timings(const void *arg, bool write_only) 727 { 728 const struct v4l2_enum_dv_timings *p = arg; 729 730 pr_cont("index=%u, ", p->index); 731 v4l_print_dv_timings(&p->timings, write_only); 732 } 733 734 static void v4l_print_dv_timings_cap(const void *arg, bool write_only) 735 { 736 const struct v4l2_dv_timings_cap *p = arg; 737 738 switch (p->type) { 739 case V4L2_DV_BT_656_1120: 740 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n", 741 p->bt.min_width, p->bt.max_width, 742 p->bt.min_height, p->bt.max_height, 743 p->bt.min_pixelclock, p->bt.max_pixelclock, 744 p->bt.standards, p->bt.capabilities); 745 break; 746 default: 747 pr_cont("type=%u\n", p->type); 748 break; 749 } 750 } 751 752 static void v4l_print_frmsizeenum(const void *arg, bool write_only) 753 { 754 const struct v4l2_frmsizeenum *p = arg; 755 756 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u", 757 p->index, 758 (p->pixel_format & 0xff), 759 (p->pixel_format >> 8) & 0xff, 760 (p->pixel_format >> 16) & 0xff, 761 (p->pixel_format >> 24) & 0xff, 762 p->type); 763 switch (p->type) { 764 case V4L2_FRMSIZE_TYPE_DISCRETE: 765 pr_cont(", wxh=%ux%u\n", 766 p->discrete.width, p->discrete.height); 767 break; 768 case V4L2_FRMSIZE_TYPE_STEPWISE: 769 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n", 770 p->stepwise.min_width, 771 p->stepwise.min_height, 772 p->stepwise.max_width, 773 p->stepwise.max_height, 774 p->stepwise.step_width, 775 p->stepwise.step_height); 776 break; 777 case V4L2_FRMSIZE_TYPE_CONTINUOUS: 778 /* fall through */ 779 default: 780 pr_cont("\n"); 781 break; 782 } 783 } 784 785 static void v4l_print_frmivalenum(const void *arg, bool write_only) 786 { 787 const struct v4l2_frmivalenum *p = arg; 788 789 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u", 790 p->index, 791 (p->pixel_format & 0xff), 792 (p->pixel_format >> 8) & 0xff, 793 (p->pixel_format >> 16) & 0xff, 794 (p->pixel_format >> 24) & 0xff, 795 p->width, p->height, p->type); 796 switch (p->type) { 797 case V4L2_FRMIVAL_TYPE_DISCRETE: 798 pr_cont(", fps=%d/%d\n", 799 p->discrete.numerator, 800 p->discrete.denominator); 801 break; 802 case V4L2_FRMIVAL_TYPE_STEPWISE: 803 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n", 804 p->stepwise.min.numerator, 805 p->stepwise.min.denominator, 806 p->stepwise.max.numerator, 807 p->stepwise.max.denominator, 808 p->stepwise.step.numerator, 809 p->stepwise.step.denominator); 810 break; 811 case V4L2_FRMIVAL_TYPE_CONTINUOUS: 812 /* fall through */ 813 default: 814 pr_cont("\n"); 815 break; 816 } 817 } 818 819 static void v4l_print_event(const void *arg, bool write_only) 820 { 821 const struct v4l2_event *p = arg; 822 const struct v4l2_event_ctrl *c; 823 824 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%llu.%9.9llu\n", 825 p->type, p->pending, p->sequence, p->id, 826 p->timestamp.tv_sec, p->timestamp.tv_nsec); 827 switch (p->type) { 828 case V4L2_EVENT_VSYNC: 829 printk(KERN_DEBUG "field=%s\n", 830 prt_names(p->u.vsync.field, v4l2_field_names)); 831 break; 832 case V4L2_EVENT_CTRL: 833 c = &p->u.ctrl; 834 printk(KERN_DEBUG "changes=0x%x, type=%u, ", 835 c->changes, c->type); 836 if (c->type == V4L2_CTRL_TYPE_INTEGER64) 837 pr_cont("value64=%lld, ", c->value64); 838 else 839 pr_cont("value=%d, ", c->value); 840 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n", 841 c->flags, c->minimum, c->maximum, 842 c->step, c->default_value); 843 break; 844 case V4L2_EVENT_FRAME_SYNC: 845 pr_cont("frame_sequence=%u\n", 846 p->u.frame_sync.frame_sequence); 847 break; 848 } 849 } 850 851 static void v4l_print_event_subscription(const void *arg, bool write_only) 852 { 853 const struct v4l2_event_subscription *p = arg; 854 855 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n", 856 p->type, p->id, p->flags); 857 } 858 859 static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only) 860 { 861 const struct v4l2_sliced_vbi_cap *p = arg; 862 int i; 863 864 pr_cont("type=%s, service_set=0x%08x\n", 865 prt_names(p->type, v4l2_type_names), p->service_set); 866 for (i = 0; i < 24; i++) 867 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, 868 p->service_lines[0][i], 869 p->service_lines[1][i]); 870 } 871 872 static void v4l_print_freq_band(const void *arg, bool write_only) 873 { 874 const struct v4l2_frequency_band *p = arg; 875 876 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n", 877 p->tuner, p->type, p->index, 878 p->capability, p->rangelow, 879 p->rangehigh, p->modulation); 880 } 881 882 static void v4l_print_edid(const void *arg, bool write_only) 883 { 884 const struct v4l2_edid *p = arg; 885 886 pr_cont("pad=%u, start_block=%u, blocks=%u\n", 887 p->pad, p->start_block, p->blocks); 888 } 889 890 static void v4l_print_u32(const void *arg, bool write_only) 891 { 892 pr_cont("value=%u\n", *(const u32 *)arg); 893 } 894 895 static void v4l_print_newline(const void *arg, bool write_only) 896 { 897 pr_cont("\n"); 898 } 899 900 static void v4l_print_default(const void *arg, bool write_only) 901 { 902 pr_cont("driver-specific ioctl\n"); 903 } 904 905 static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) 906 { 907 __u32 i; 908 909 /* zero the reserved fields */ 910 c->reserved[0] = 0; 911 for (i = 0; i < c->count; i++) 912 c->controls[i].reserved2[0] = 0; 913 914 /* V4L2_CID_PRIVATE_BASE cannot be used as control class 915 when using extended controls. 916 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL 917 is it allowed for backwards compatibility. 918 */ 919 if (!allow_priv && c->which == V4L2_CID_PRIVATE_BASE) 920 return 0; 921 if (!c->which) 922 return 1; 923 /* Check that all controls are from the same control class. */ 924 for (i = 0; i < c->count; i++) { 925 if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) { 926 c->error_idx = i; 927 return 0; 928 } 929 } 930 return 1; 931 } 932 933 static int check_fmt(struct file *file, enum v4l2_buf_type type) 934 { 935 const u32 vid_caps = V4L2_CAP_VIDEO_CAPTURE | 936 V4L2_CAP_VIDEO_CAPTURE_MPLANE | 937 V4L2_CAP_VIDEO_OUTPUT | 938 V4L2_CAP_VIDEO_OUTPUT_MPLANE | 939 V4L2_CAP_VIDEO_M2M | V4L2_CAP_VIDEO_M2M_MPLANE; 940 const u32 meta_caps = V4L2_CAP_META_CAPTURE | 941 V4L2_CAP_META_OUTPUT; 942 struct video_device *vfd = video_devdata(file); 943 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 944 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER && 945 (vfd->device_caps & vid_caps); 946 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI; 947 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; 948 bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; 949 bool is_meta = vfd->vfl_type == VFL_TYPE_GRABBER && 950 (vfd->device_caps & meta_caps); 951 bool is_rx = vfd->vfl_dir != VFL_DIR_TX; 952 bool is_tx = vfd->vfl_dir != VFL_DIR_RX; 953 954 if (ops == NULL) 955 return -EINVAL; 956 957 switch (type) { 958 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 959 if ((is_vid || is_tch) && is_rx && 960 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane)) 961 return 0; 962 break; 963 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 964 if ((is_vid || is_tch) && is_rx && ops->vidioc_g_fmt_vid_cap_mplane) 965 return 0; 966 break; 967 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 968 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay) 969 return 0; 970 break; 971 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 972 if (is_vid && is_tx && 973 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane)) 974 return 0; 975 break; 976 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 977 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane) 978 return 0; 979 break; 980 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 981 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay) 982 return 0; 983 break; 984 case V4L2_BUF_TYPE_VBI_CAPTURE: 985 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap) 986 return 0; 987 break; 988 case V4L2_BUF_TYPE_VBI_OUTPUT: 989 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out) 990 return 0; 991 break; 992 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 993 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap) 994 return 0; 995 break; 996 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 997 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out) 998 return 0; 999 break; 1000 case V4L2_BUF_TYPE_SDR_CAPTURE: 1001 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap) 1002 return 0; 1003 break; 1004 case V4L2_BUF_TYPE_SDR_OUTPUT: 1005 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out) 1006 return 0; 1007 break; 1008 case V4L2_BUF_TYPE_META_CAPTURE: 1009 if (is_meta && is_rx && ops->vidioc_g_fmt_meta_cap) 1010 return 0; 1011 break; 1012 case V4L2_BUF_TYPE_META_OUTPUT: 1013 if (is_meta && is_tx && ops->vidioc_g_fmt_meta_out) 1014 return 0; 1015 break; 1016 default: 1017 break; 1018 } 1019 return -EINVAL; 1020 } 1021 1022 static void v4l_sanitize_format(struct v4l2_format *fmt) 1023 { 1024 unsigned int offset; 1025 1026 /* Make sure num_planes is not bogus */ 1027 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE || 1028 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 1029 fmt->fmt.pix_mp.num_planes = min_t(u32, fmt->fmt.pix_mp.num_planes, 1030 VIDEO_MAX_PLANES); 1031 1032 /* 1033 * The v4l2_pix_format structure has been extended with fields that were 1034 * not previously required to be set to zero by applications. The priv 1035 * field, when set to a magic value, indicates the the extended fields 1036 * are valid. Otherwise they will contain undefined values. To simplify 1037 * the API towards drivers zero the extended fields and set the priv 1038 * field to the magic value when the extended pixel format structure 1039 * isn't used by applications. 1040 */ 1041 1042 if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && 1043 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) 1044 return; 1045 1046 if (fmt->fmt.pix.priv == V4L2_PIX_FMT_PRIV_MAGIC) 1047 return; 1048 1049 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1050 1051 offset = offsetof(struct v4l2_pix_format, priv) 1052 + sizeof(fmt->fmt.pix.priv); 1053 memset(((void *)&fmt->fmt.pix) + offset, 0, 1054 sizeof(fmt->fmt.pix) - offset); 1055 } 1056 1057 static int v4l_querycap(const struct v4l2_ioctl_ops *ops, 1058 struct file *file, void *fh, void *arg) 1059 { 1060 struct v4l2_capability *cap = (struct v4l2_capability *)arg; 1061 struct video_device *vfd = video_devdata(file); 1062 int ret; 1063 1064 cap->version = LINUX_VERSION_CODE; 1065 cap->device_caps = vfd->device_caps; 1066 cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS; 1067 1068 ret = ops->vidioc_querycap(file, fh, cap); 1069 1070 /* 1071 * Drivers must not change device_caps, so check for this and 1072 * warn if this happened. 1073 */ 1074 WARN_ON(cap->device_caps != vfd->device_caps); 1075 /* 1076 * Check that capabilities is a superset of 1077 * vfd->device_caps | V4L2_CAP_DEVICE_CAPS 1078 */ 1079 WARN_ON((cap->capabilities & 1080 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)) != 1081 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)); 1082 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT; 1083 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT; 1084 1085 return ret; 1086 } 1087 1088 static int v4l_s_input(const struct v4l2_ioctl_ops *ops, 1089 struct file *file, void *fh, void *arg) 1090 { 1091 struct video_device *vfd = video_devdata(file); 1092 int ret; 1093 1094 ret = v4l_enable_media_source(vfd); 1095 if (ret) 1096 return ret; 1097 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg); 1098 } 1099 1100 static int v4l_s_output(const struct v4l2_ioctl_ops *ops, 1101 struct file *file, void *fh, void *arg) 1102 { 1103 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg); 1104 } 1105 1106 static int v4l_g_priority(const struct v4l2_ioctl_ops *ops, 1107 struct file *file, void *fh, void *arg) 1108 { 1109 struct video_device *vfd; 1110 u32 *p = arg; 1111 1112 vfd = video_devdata(file); 1113 *p = v4l2_prio_max(vfd->prio); 1114 return 0; 1115 } 1116 1117 static int v4l_s_priority(const struct v4l2_ioctl_ops *ops, 1118 struct file *file, void *fh, void *arg) 1119 { 1120 struct video_device *vfd; 1121 struct v4l2_fh *vfh; 1122 u32 *p = arg; 1123 1124 vfd = video_devdata(file); 1125 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 1126 return -ENOTTY; 1127 vfh = file->private_data; 1128 return v4l2_prio_change(vfd->prio, &vfh->prio, *p); 1129 } 1130 1131 static int v4l_enuminput(const struct v4l2_ioctl_ops *ops, 1132 struct file *file, void *fh, void *arg) 1133 { 1134 struct video_device *vfd = video_devdata(file); 1135 struct v4l2_input *p = arg; 1136 1137 /* 1138 * We set the flags for CAP_DV_TIMINGS & 1139 * CAP_STD here based on ioctl handler provided by the 1140 * driver. If the driver doesn't support these 1141 * for a specific input, it must override these flags. 1142 */ 1143 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1144 p->capabilities |= V4L2_IN_CAP_STD; 1145 1146 return ops->vidioc_enum_input(file, fh, p); 1147 } 1148 1149 static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops, 1150 struct file *file, void *fh, void *arg) 1151 { 1152 struct video_device *vfd = video_devdata(file); 1153 struct v4l2_output *p = arg; 1154 1155 /* 1156 * We set the flags for CAP_DV_TIMINGS & 1157 * CAP_STD here based on ioctl handler provided by the 1158 * driver. If the driver doesn't support these 1159 * for a specific output, it must override these flags. 1160 */ 1161 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1162 p->capabilities |= V4L2_OUT_CAP_STD; 1163 1164 return ops->vidioc_enum_output(file, fh, p); 1165 } 1166 1167 static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) 1168 { 1169 const unsigned sz = sizeof(fmt->description); 1170 const char *descr = NULL; 1171 u32 flags = 0; 1172 1173 /* 1174 * We depart from the normal coding style here since the descriptions 1175 * should be aligned so it is easy to see which descriptions will be 1176 * longer than 31 characters (the max length for a description). 1177 * And frankly, this is easier to read anyway. 1178 * 1179 * Note that gcc will use O(log N) comparisons to find the right case. 1180 */ 1181 switch (fmt->pixelformat) { 1182 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1183 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break; 1184 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break; 1185 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break; 1186 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break; 1187 case V4L2_PIX_FMT_RGBA444: descr = "16-bit RGBA 4-4-4-4"; break; 1188 case V4L2_PIX_FMT_RGBX444: descr = "16-bit RGBX 4-4-4-4"; break; 1189 case V4L2_PIX_FMT_ABGR444: descr = "16-bit ABGR 4-4-4-4"; break; 1190 case V4L2_PIX_FMT_XBGR444: descr = "16-bit XBGR 4-4-4-4"; break; 1191 case V4L2_PIX_FMT_BGRA444: descr = "16-bit BGRA 4-4-4-4"; break; 1192 case V4L2_PIX_FMT_BGRX444: descr = "16-bit BGRX 4-4-4-4"; break; 1193 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break; 1194 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break; 1195 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break; 1196 case V4L2_PIX_FMT_ABGR555: descr = "16-bit ABGR 1-5-5-5"; break; 1197 case V4L2_PIX_FMT_XBGR555: descr = "16-bit XBGR 1-5-5-5"; break; 1198 case V4L2_PIX_FMT_RGBA555: descr = "16-bit RGBA 5-5-5-1"; break; 1199 case V4L2_PIX_FMT_RGBX555: descr = "16-bit RGBX 5-5-5-1"; break; 1200 case V4L2_PIX_FMT_BGRA555: descr = "16-bit BGRA 5-5-5-1"; break; 1201 case V4L2_PIX_FMT_BGRX555: descr = "16-bit BGRX 5-5-5-1"; break; 1202 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break; 1203 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break; 1204 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break; 1205 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break; 1206 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break; 1207 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break; 1208 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break; 1209 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break; 1210 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break; 1211 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break; 1212 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break; 1213 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break; 1214 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break; 1215 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break; 1216 case V4L2_PIX_FMT_BGRA32: descr = "32-bit ABGR 8-8-8-8"; break; 1217 case V4L2_PIX_FMT_BGRX32: descr = "32-bit XBGR 8-8-8-8"; break; 1218 case V4L2_PIX_FMT_RGBA32: descr = "32-bit RGBA 8-8-8-8"; break; 1219 case V4L2_PIX_FMT_RGBX32: descr = "32-bit RGBX 8-8-8-8"; break; 1220 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break; 1221 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break; 1222 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break; 1223 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break; 1224 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break; 1225 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break; 1226 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break; 1227 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break; 1228 case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break; 1229 case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break; 1230 case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break; 1231 case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break; 1232 case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break; 1233 case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break; 1234 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break; 1235 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break; 1236 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break; 1237 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break; 1238 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break; 1239 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break; 1240 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break; 1241 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break; 1242 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break; 1243 case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break; 1244 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break; 1245 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break; 1246 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break; 1247 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break; 1248 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break; 1249 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break; 1250 case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break; 1251 case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break; 1252 case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break; 1253 case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break; 1254 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break; 1255 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break; 1256 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break; 1257 case V4L2_PIX_FMT_HM12: descr = "YUV 4:2:0 (16x16 Macroblocks)"; break; 1258 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break; 1259 case V4L2_PIX_FMT_NV12: descr = "Y/CbCr 4:2:0"; break; 1260 case V4L2_PIX_FMT_NV21: descr = "Y/CrCb 4:2:0"; break; 1261 case V4L2_PIX_FMT_NV16: descr = "Y/CbCr 4:2:2"; break; 1262 case V4L2_PIX_FMT_NV61: descr = "Y/CrCb 4:2:2"; break; 1263 case V4L2_PIX_FMT_NV24: descr = "Y/CbCr 4:4:4"; break; 1264 case V4L2_PIX_FMT_NV42: descr = "Y/CrCb 4:4:4"; break; 1265 case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break; 1266 case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break; 1267 case V4L2_PIX_FMT_NV16M: descr = "Y/CbCr 4:2:2 (N-C)"; break; 1268 case V4L2_PIX_FMT_NV61M: descr = "Y/CrCb 4:2:2 (N-C)"; break; 1269 case V4L2_PIX_FMT_NV12MT: descr = "Y/CbCr 4:2:0 (64x32 MB, N-C)"; break; 1270 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/CbCr 4:2:0 (16x16 MB, N-C)"; break; 1271 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break; 1272 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break; 1273 case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break; 1274 case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break; 1275 case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break; 1276 case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break; 1277 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break; 1278 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break; 1279 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break; 1280 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break; 1281 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break; 1282 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break; 1283 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break; 1284 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break; 1285 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break; 1286 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break; 1287 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break; 1288 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break; 1289 case V4L2_PIX_FMT_IPU3_SBGGR10: descr = "10-bit bayer BGGR IPU3 Packed"; break; 1290 case V4L2_PIX_FMT_IPU3_SGBRG10: descr = "10-bit bayer GBRG IPU3 Packed"; break; 1291 case V4L2_PIX_FMT_IPU3_SGRBG10: descr = "10-bit bayer GRBG IPU3 Packed"; break; 1292 case V4L2_PIX_FMT_IPU3_SRGGB10: descr = "10-bit bayer RGGB IPU3 Packed"; break; 1293 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break; 1294 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break; 1295 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break; 1296 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break; 1297 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break; 1298 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break; 1299 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break; 1300 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break; 1301 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break; 1302 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break; 1303 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break; 1304 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break; 1305 case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break; 1306 case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break; 1307 case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break; 1308 case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break; 1309 case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break; 1310 case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break; 1311 case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break; 1312 case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break; 1313 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break; 1314 case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break; 1315 case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break; 1316 case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break; 1317 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break; 1318 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break; 1319 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break; 1320 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break; 1321 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break; 1322 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break; 1323 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break; 1324 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break; 1325 case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break; 1326 case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break; 1327 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break; 1328 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break; 1329 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break; 1330 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break; 1331 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break; 1332 case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break; 1333 case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break; 1334 case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break; 1335 case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit Signed Deltas"; break; 1336 case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit Signed Deltas"; break; 1337 case V4L2_TCH_FMT_TU16: descr = "16-bit Unsigned Touch Data"; break; 1338 case V4L2_TCH_FMT_TU08: descr = "8-bit Unsigned Touch Data"; break; 1339 case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break; 1340 case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break; 1341 case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break; 1342 case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break; 1343 case V4L2_META_FMT_VIVID: descr = "Vivid Metadata"; break; 1344 1345 default: 1346 /* Compressed formats */ 1347 flags = V4L2_FMT_FLAG_COMPRESSED; 1348 switch (fmt->pixelformat) { 1349 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1350 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break; 1351 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break; 1352 case V4L2_PIX_FMT_DV: descr = "1394"; break; 1353 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break; 1354 case V4L2_PIX_FMT_H264: descr = "H.264"; break; 1355 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break; 1356 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break; 1357 case V4L2_PIX_FMT_H264_SLICE: descr = "H.264 Parsed Slice Data"; break; 1358 case V4L2_PIX_FMT_H263: descr = "H.263"; break; 1359 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break; 1360 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break; 1361 case V4L2_PIX_FMT_MPEG2_SLICE: descr = "MPEG-2 Parsed Slice Data"; break; 1362 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 Part 2 ES"; break; 1363 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break; 1364 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break; 1365 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break; 1366 case V4L2_PIX_FMT_VP8: descr = "VP8"; break; 1367 case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break; 1368 case V4L2_PIX_FMT_VP9: descr = "VP9"; break; 1369 case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */ 1370 case V4L2_PIX_FMT_HEVC_SLICE: descr = "HEVC Parsed Slice Data"; break; 1371 case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */ 1372 case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */ 1373 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break; 1374 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break; 1375 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break; 1376 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break; 1377 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break; 1378 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break; 1379 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break; 1380 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break; 1381 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break; 1382 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break; 1383 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break; 1384 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break; 1385 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break; 1386 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break; 1387 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break; 1388 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break; 1389 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break; 1390 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break; 1391 case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break; 1392 case V4L2_PIX_FMT_SUNXI_TILED_NV12: descr = "Sunxi Tiled NV12 Format"; break; 1393 default: 1394 if (fmt->description[0]) 1395 return; 1396 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat); 1397 flags = 0; 1398 snprintf(fmt->description, sz, "%c%c%c%c%s", 1399 (char)(fmt->pixelformat & 0x7f), 1400 (char)((fmt->pixelformat >> 8) & 0x7f), 1401 (char)((fmt->pixelformat >> 16) & 0x7f), 1402 (char)((fmt->pixelformat >> 24) & 0x7f), 1403 (fmt->pixelformat & (1UL << 31)) ? "-BE" : ""); 1404 break; 1405 } 1406 } 1407 1408 if (descr) 1409 WARN_ON(strscpy(fmt->description, descr, sz) < 0); 1410 fmt->flags |= flags; 1411 } 1412 1413 static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops, 1414 struct file *file, void *fh, void *arg) 1415 { 1416 struct video_device *vdev = video_devdata(file); 1417 struct v4l2_fmtdesc *p = arg; 1418 int ret = check_fmt(file, p->type); 1419 u32 cap_mask; 1420 1421 if (ret) 1422 return ret; 1423 ret = -EINVAL; 1424 1425 switch (p->type) { 1426 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1427 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1428 cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE | 1429 V4L2_CAP_VIDEO_M2M_MPLANE; 1430 if (!!(vdev->device_caps & cap_mask) != 1431 (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) 1432 break; 1433 1434 if (unlikely(!ops->vidioc_enum_fmt_vid_cap)) 1435 break; 1436 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg); 1437 break; 1438 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1439 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay)) 1440 break; 1441 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg); 1442 break; 1443 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1444 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1445 cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE | 1446 V4L2_CAP_VIDEO_M2M_MPLANE; 1447 if (!!(vdev->device_caps & cap_mask) != 1448 (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)) 1449 break; 1450 1451 if (unlikely(!ops->vidioc_enum_fmt_vid_out)) 1452 break; 1453 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg); 1454 break; 1455 case V4L2_BUF_TYPE_SDR_CAPTURE: 1456 if (unlikely(!ops->vidioc_enum_fmt_sdr_cap)) 1457 break; 1458 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg); 1459 break; 1460 case V4L2_BUF_TYPE_SDR_OUTPUT: 1461 if (unlikely(!ops->vidioc_enum_fmt_sdr_out)) 1462 break; 1463 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg); 1464 break; 1465 case V4L2_BUF_TYPE_META_CAPTURE: 1466 if (unlikely(!ops->vidioc_enum_fmt_meta_cap)) 1467 break; 1468 ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg); 1469 break; 1470 case V4L2_BUF_TYPE_META_OUTPUT: 1471 if (unlikely(!ops->vidioc_enum_fmt_meta_out)) 1472 break; 1473 ret = ops->vidioc_enum_fmt_meta_out(file, fh, arg); 1474 break; 1475 } 1476 if (ret == 0) 1477 v4l_fill_fmtdesc(p); 1478 return ret; 1479 } 1480 1481 static void v4l_pix_format_touch(struct v4l2_pix_format *p) 1482 { 1483 /* 1484 * The v4l2_pix_format structure contains fields that make no sense for 1485 * touch. Set them to default values in this case. 1486 */ 1487 1488 p->field = V4L2_FIELD_NONE; 1489 p->colorspace = V4L2_COLORSPACE_RAW; 1490 p->flags = 0; 1491 p->ycbcr_enc = 0; 1492 p->quantization = 0; 1493 p->xfer_func = 0; 1494 } 1495 1496 static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, 1497 struct file *file, void *fh, void *arg) 1498 { 1499 struct v4l2_format *p = arg; 1500 struct video_device *vfd = video_devdata(file); 1501 int ret = check_fmt(file, p->type); 1502 1503 if (ret) 1504 return ret; 1505 1506 /* 1507 * fmt can't be cleared for these overlay types due to the 'clips' 1508 * 'clipcount' and 'bitmap' pointers in struct v4l2_window. 1509 * Those are provided by the user. So handle these two overlay types 1510 * first, and then just do a simple memset for the other types. 1511 */ 1512 switch (p->type) { 1513 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1514 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: { 1515 struct v4l2_clip __user *clips = p->fmt.win.clips; 1516 u32 clipcount = p->fmt.win.clipcount; 1517 void __user *bitmap = p->fmt.win.bitmap; 1518 1519 memset(&p->fmt, 0, sizeof(p->fmt)); 1520 p->fmt.win.clips = clips; 1521 p->fmt.win.clipcount = clipcount; 1522 p->fmt.win.bitmap = bitmap; 1523 break; 1524 } 1525 default: 1526 memset(&p->fmt, 0, sizeof(p->fmt)); 1527 break; 1528 } 1529 1530 switch (p->type) { 1531 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1532 if (unlikely(!ops->vidioc_g_fmt_vid_cap)) 1533 break; 1534 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1535 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg); 1536 /* just in case the driver zeroed it again */ 1537 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1538 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1539 v4l_pix_format_touch(&p->fmt.pix); 1540 return ret; 1541 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1542 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg); 1543 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1544 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg); 1545 case V4L2_BUF_TYPE_VBI_CAPTURE: 1546 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg); 1547 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1548 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg); 1549 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1550 if (unlikely(!ops->vidioc_g_fmt_vid_out)) 1551 break; 1552 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1553 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg); 1554 /* just in case the driver zeroed it again */ 1555 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1556 return ret; 1557 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1558 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg); 1559 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1560 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg); 1561 case V4L2_BUF_TYPE_VBI_OUTPUT: 1562 return ops->vidioc_g_fmt_vbi_out(file, fh, arg); 1563 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1564 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg); 1565 case V4L2_BUF_TYPE_SDR_CAPTURE: 1566 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg); 1567 case V4L2_BUF_TYPE_SDR_OUTPUT: 1568 return ops->vidioc_g_fmt_sdr_out(file, fh, arg); 1569 case V4L2_BUF_TYPE_META_CAPTURE: 1570 return ops->vidioc_g_fmt_meta_cap(file, fh, arg); 1571 case V4L2_BUF_TYPE_META_OUTPUT: 1572 return ops->vidioc_g_fmt_meta_out(file, fh, arg); 1573 } 1574 return -EINVAL; 1575 } 1576 1577 static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, 1578 struct file *file, void *fh, void *arg) 1579 { 1580 struct v4l2_format *p = arg; 1581 struct video_device *vfd = video_devdata(file); 1582 int ret = check_fmt(file, p->type); 1583 unsigned int i; 1584 1585 if (ret) 1586 return ret; 1587 1588 ret = v4l_enable_media_source(vfd); 1589 if (ret) 1590 return ret; 1591 v4l_sanitize_format(p); 1592 1593 switch (p->type) { 1594 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1595 if (unlikely(!ops->vidioc_s_fmt_vid_cap)) 1596 break; 1597 CLEAR_AFTER_FIELD(p, fmt.pix); 1598 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg); 1599 /* just in case the driver zeroed it again */ 1600 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1601 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1602 v4l_pix_format_touch(&p->fmt.pix); 1603 return ret; 1604 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1605 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane)) 1606 break; 1607 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1608 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1609 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1610 bytesperline); 1611 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg); 1612 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1613 if (unlikely(!ops->vidioc_s_fmt_vid_overlay)) 1614 break; 1615 CLEAR_AFTER_FIELD(p, fmt.win); 1616 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg); 1617 case V4L2_BUF_TYPE_VBI_CAPTURE: 1618 if (unlikely(!ops->vidioc_s_fmt_vbi_cap)) 1619 break; 1620 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1621 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg); 1622 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1623 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap)) 1624 break; 1625 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1626 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg); 1627 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1628 if (unlikely(!ops->vidioc_s_fmt_vid_out)) 1629 break; 1630 CLEAR_AFTER_FIELD(p, fmt.pix); 1631 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg); 1632 /* just in case the driver zeroed it again */ 1633 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1634 return ret; 1635 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1636 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane)) 1637 break; 1638 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1639 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1640 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1641 bytesperline); 1642 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg); 1643 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1644 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay)) 1645 break; 1646 CLEAR_AFTER_FIELD(p, fmt.win); 1647 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg); 1648 case V4L2_BUF_TYPE_VBI_OUTPUT: 1649 if (unlikely(!ops->vidioc_s_fmt_vbi_out)) 1650 break; 1651 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1652 return ops->vidioc_s_fmt_vbi_out(file, fh, arg); 1653 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1654 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out)) 1655 break; 1656 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1657 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg); 1658 case V4L2_BUF_TYPE_SDR_CAPTURE: 1659 if (unlikely(!ops->vidioc_s_fmt_sdr_cap)) 1660 break; 1661 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1662 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg); 1663 case V4L2_BUF_TYPE_SDR_OUTPUT: 1664 if (unlikely(!ops->vidioc_s_fmt_sdr_out)) 1665 break; 1666 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1667 return ops->vidioc_s_fmt_sdr_out(file, fh, arg); 1668 case V4L2_BUF_TYPE_META_CAPTURE: 1669 if (unlikely(!ops->vidioc_s_fmt_meta_cap)) 1670 break; 1671 CLEAR_AFTER_FIELD(p, fmt.meta); 1672 return ops->vidioc_s_fmt_meta_cap(file, fh, arg); 1673 case V4L2_BUF_TYPE_META_OUTPUT: 1674 if (unlikely(!ops->vidioc_s_fmt_meta_out)) 1675 break; 1676 CLEAR_AFTER_FIELD(p, fmt.meta); 1677 return ops->vidioc_s_fmt_meta_out(file, fh, arg); 1678 } 1679 return -EINVAL; 1680 } 1681 1682 static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, 1683 struct file *file, void *fh, void *arg) 1684 { 1685 struct v4l2_format *p = arg; 1686 struct video_device *vfd = video_devdata(file); 1687 int ret = check_fmt(file, p->type); 1688 unsigned int i; 1689 1690 if (ret) 1691 return ret; 1692 1693 v4l_sanitize_format(p); 1694 1695 switch (p->type) { 1696 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1697 if (unlikely(!ops->vidioc_try_fmt_vid_cap)) 1698 break; 1699 CLEAR_AFTER_FIELD(p, fmt.pix); 1700 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg); 1701 /* just in case the driver zeroed it again */ 1702 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1703 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1704 v4l_pix_format_touch(&p->fmt.pix); 1705 return ret; 1706 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1707 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane)) 1708 break; 1709 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1710 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1711 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1712 bytesperline); 1713 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg); 1714 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1715 if (unlikely(!ops->vidioc_try_fmt_vid_overlay)) 1716 break; 1717 CLEAR_AFTER_FIELD(p, fmt.win); 1718 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg); 1719 case V4L2_BUF_TYPE_VBI_CAPTURE: 1720 if (unlikely(!ops->vidioc_try_fmt_vbi_cap)) 1721 break; 1722 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1723 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg); 1724 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1725 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap)) 1726 break; 1727 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1728 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg); 1729 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1730 if (unlikely(!ops->vidioc_try_fmt_vid_out)) 1731 break; 1732 CLEAR_AFTER_FIELD(p, fmt.pix); 1733 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg); 1734 /* just in case the driver zeroed it again */ 1735 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1736 return ret; 1737 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1738 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane)) 1739 break; 1740 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1741 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1742 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1743 bytesperline); 1744 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg); 1745 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1746 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay)) 1747 break; 1748 CLEAR_AFTER_FIELD(p, fmt.win); 1749 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg); 1750 case V4L2_BUF_TYPE_VBI_OUTPUT: 1751 if (unlikely(!ops->vidioc_try_fmt_vbi_out)) 1752 break; 1753 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1754 return ops->vidioc_try_fmt_vbi_out(file, fh, arg); 1755 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1756 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out)) 1757 break; 1758 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1759 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg); 1760 case V4L2_BUF_TYPE_SDR_CAPTURE: 1761 if (unlikely(!ops->vidioc_try_fmt_sdr_cap)) 1762 break; 1763 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1764 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg); 1765 case V4L2_BUF_TYPE_SDR_OUTPUT: 1766 if (unlikely(!ops->vidioc_try_fmt_sdr_out)) 1767 break; 1768 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1769 return ops->vidioc_try_fmt_sdr_out(file, fh, arg); 1770 case V4L2_BUF_TYPE_META_CAPTURE: 1771 if (unlikely(!ops->vidioc_try_fmt_meta_cap)) 1772 break; 1773 CLEAR_AFTER_FIELD(p, fmt.meta); 1774 return ops->vidioc_try_fmt_meta_cap(file, fh, arg); 1775 case V4L2_BUF_TYPE_META_OUTPUT: 1776 if (unlikely(!ops->vidioc_try_fmt_meta_out)) 1777 break; 1778 CLEAR_AFTER_FIELD(p, fmt.meta); 1779 return ops->vidioc_try_fmt_meta_out(file, fh, arg); 1780 } 1781 return -EINVAL; 1782 } 1783 1784 static int v4l_streamon(const struct v4l2_ioctl_ops *ops, 1785 struct file *file, void *fh, void *arg) 1786 { 1787 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg); 1788 } 1789 1790 static int v4l_streamoff(const struct v4l2_ioctl_ops *ops, 1791 struct file *file, void *fh, void *arg) 1792 { 1793 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg); 1794 } 1795 1796 static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops, 1797 struct file *file, void *fh, void *arg) 1798 { 1799 struct video_device *vfd = video_devdata(file); 1800 struct v4l2_tuner *p = arg; 1801 int err; 1802 1803 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1804 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1805 err = ops->vidioc_g_tuner(file, fh, p); 1806 if (!err) 1807 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1808 return err; 1809 } 1810 1811 static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops, 1812 struct file *file, void *fh, void *arg) 1813 { 1814 struct video_device *vfd = video_devdata(file); 1815 struct v4l2_tuner *p = arg; 1816 int ret; 1817 1818 ret = v4l_enable_media_source(vfd); 1819 if (ret) 1820 return ret; 1821 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1822 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1823 return ops->vidioc_s_tuner(file, fh, p); 1824 } 1825 1826 static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops, 1827 struct file *file, void *fh, void *arg) 1828 { 1829 struct video_device *vfd = video_devdata(file); 1830 struct v4l2_modulator *p = arg; 1831 int err; 1832 1833 if (vfd->vfl_type == VFL_TYPE_RADIO) 1834 p->type = V4L2_TUNER_RADIO; 1835 1836 err = ops->vidioc_g_modulator(file, fh, p); 1837 if (!err) 1838 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1839 return err; 1840 } 1841 1842 static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops, 1843 struct file *file, void *fh, void *arg) 1844 { 1845 struct video_device *vfd = video_devdata(file); 1846 struct v4l2_modulator *p = arg; 1847 1848 if (vfd->vfl_type == VFL_TYPE_RADIO) 1849 p->type = V4L2_TUNER_RADIO; 1850 1851 return ops->vidioc_s_modulator(file, fh, p); 1852 } 1853 1854 static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops, 1855 struct file *file, void *fh, void *arg) 1856 { 1857 struct video_device *vfd = video_devdata(file); 1858 struct v4l2_frequency *p = arg; 1859 1860 if (vfd->vfl_type == VFL_TYPE_SDR) 1861 p->type = V4L2_TUNER_SDR; 1862 else 1863 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1864 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1865 return ops->vidioc_g_frequency(file, fh, p); 1866 } 1867 1868 static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops, 1869 struct file *file, void *fh, void *arg) 1870 { 1871 struct video_device *vfd = video_devdata(file); 1872 const struct v4l2_frequency *p = arg; 1873 enum v4l2_tuner_type type; 1874 int ret; 1875 1876 ret = v4l_enable_media_source(vfd); 1877 if (ret) 1878 return ret; 1879 if (vfd->vfl_type == VFL_TYPE_SDR) { 1880 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 1881 return -EINVAL; 1882 } else { 1883 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1884 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1885 if (type != p->type) 1886 return -EINVAL; 1887 } 1888 return ops->vidioc_s_frequency(file, fh, p); 1889 } 1890 1891 static int v4l_enumstd(const struct v4l2_ioctl_ops *ops, 1892 struct file *file, void *fh, void *arg) 1893 { 1894 struct video_device *vfd = video_devdata(file); 1895 struct v4l2_standard *p = arg; 1896 1897 return v4l_video_std_enumstd(p, vfd->tvnorms); 1898 } 1899 1900 static int v4l_s_std(const struct v4l2_ioctl_ops *ops, 1901 struct file *file, void *fh, void *arg) 1902 { 1903 struct video_device *vfd = video_devdata(file); 1904 v4l2_std_id id = *(v4l2_std_id *)arg, norm; 1905 int ret; 1906 1907 ret = v4l_enable_media_source(vfd); 1908 if (ret) 1909 return ret; 1910 norm = id & vfd->tvnorms; 1911 if (vfd->tvnorms && !norm) /* Check if std is supported */ 1912 return -EINVAL; 1913 1914 /* Calls the specific handler */ 1915 return ops->vidioc_s_std(file, fh, norm); 1916 } 1917 1918 static int v4l_querystd(const struct v4l2_ioctl_ops *ops, 1919 struct file *file, void *fh, void *arg) 1920 { 1921 struct video_device *vfd = video_devdata(file); 1922 v4l2_std_id *p = arg; 1923 int ret; 1924 1925 ret = v4l_enable_media_source(vfd); 1926 if (ret) 1927 return ret; 1928 /* 1929 * If no signal is detected, then the driver should return 1930 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with 1931 * any standards that do not apply removed. 1932 * 1933 * This means that tuners, audio and video decoders can join 1934 * their efforts to improve the standards detection. 1935 */ 1936 *p = vfd->tvnorms; 1937 return ops->vidioc_querystd(file, fh, arg); 1938 } 1939 1940 static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops, 1941 struct file *file, void *fh, void *arg) 1942 { 1943 struct video_device *vfd = video_devdata(file); 1944 struct v4l2_hw_freq_seek *p = arg; 1945 enum v4l2_tuner_type type; 1946 int ret; 1947 1948 ret = v4l_enable_media_source(vfd); 1949 if (ret) 1950 return ret; 1951 /* s_hw_freq_seek is not supported for SDR for now */ 1952 if (vfd->vfl_type == VFL_TYPE_SDR) 1953 return -EINVAL; 1954 1955 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1956 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1957 if (p->type != type) 1958 return -EINVAL; 1959 return ops->vidioc_s_hw_freq_seek(file, fh, p); 1960 } 1961 1962 static int v4l_overlay(const struct v4l2_ioctl_ops *ops, 1963 struct file *file, void *fh, void *arg) 1964 { 1965 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg); 1966 } 1967 1968 static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops, 1969 struct file *file, void *fh, void *arg) 1970 { 1971 struct v4l2_requestbuffers *p = arg; 1972 int ret = check_fmt(file, p->type); 1973 1974 if (ret) 1975 return ret; 1976 1977 CLEAR_AFTER_FIELD(p, capabilities); 1978 1979 return ops->vidioc_reqbufs(file, fh, p); 1980 } 1981 1982 static int v4l_querybuf(const struct v4l2_ioctl_ops *ops, 1983 struct file *file, void *fh, void *arg) 1984 { 1985 struct v4l2_buffer *p = arg; 1986 int ret = check_fmt(file, p->type); 1987 1988 return ret ? ret : ops->vidioc_querybuf(file, fh, p); 1989 } 1990 1991 static int v4l_qbuf(const struct v4l2_ioctl_ops *ops, 1992 struct file *file, void *fh, void *arg) 1993 { 1994 struct v4l2_buffer *p = arg; 1995 int ret = check_fmt(file, p->type); 1996 1997 return ret ? ret : ops->vidioc_qbuf(file, fh, p); 1998 } 1999 2000 static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops, 2001 struct file *file, void *fh, void *arg) 2002 { 2003 struct v4l2_buffer *p = arg; 2004 int ret = check_fmt(file, p->type); 2005 2006 return ret ? ret : ops->vidioc_dqbuf(file, fh, p); 2007 } 2008 2009 static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops, 2010 struct file *file, void *fh, void *arg) 2011 { 2012 struct v4l2_create_buffers *create = arg; 2013 int ret = check_fmt(file, create->format.type); 2014 2015 if (ret) 2016 return ret; 2017 2018 CLEAR_AFTER_FIELD(create, capabilities); 2019 2020 v4l_sanitize_format(&create->format); 2021 2022 ret = ops->vidioc_create_bufs(file, fh, create); 2023 2024 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 2025 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT) 2026 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 2027 2028 return ret; 2029 } 2030 2031 static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops, 2032 struct file *file, void *fh, void *arg) 2033 { 2034 struct v4l2_buffer *b = arg; 2035 int ret = check_fmt(file, b->type); 2036 2037 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b); 2038 } 2039 2040 static int v4l_g_parm(const struct v4l2_ioctl_ops *ops, 2041 struct file *file, void *fh, void *arg) 2042 { 2043 struct v4l2_streamparm *p = arg; 2044 v4l2_std_id std; 2045 int ret = check_fmt(file, p->type); 2046 2047 if (ret) 2048 return ret; 2049 if (ops->vidioc_g_parm) 2050 return ops->vidioc_g_parm(file, fh, p); 2051 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && 2052 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2053 return -EINVAL; 2054 p->parm.capture.readbuffers = 2; 2055 ret = ops->vidioc_g_std(file, fh, &std); 2056 if (ret == 0) 2057 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe); 2058 return ret; 2059 } 2060 2061 static int v4l_s_parm(const struct v4l2_ioctl_ops *ops, 2062 struct file *file, void *fh, void *arg) 2063 { 2064 struct v4l2_streamparm *p = arg; 2065 int ret = check_fmt(file, p->type); 2066 2067 if (ret) 2068 return ret; 2069 2070 /* Note: extendedmode is never used in drivers */ 2071 if (V4L2_TYPE_IS_OUTPUT(p->type)) { 2072 memset(p->parm.output.reserved, 0, 2073 sizeof(p->parm.output.reserved)); 2074 p->parm.output.extendedmode = 0; 2075 p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY; 2076 } else { 2077 memset(p->parm.capture.reserved, 0, 2078 sizeof(p->parm.capture.reserved)); 2079 p->parm.capture.extendedmode = 0; 2080 p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY; 2081 } 2082 return ops->vidioc_s_parm(file, fh, p); 2083 } 2084 2085 static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops, 2086 struct file *file, void *fh, void *arg) 2087 { 2088 struct video_device *vfd = video_devdata(file); 2089 struct v4l2_queryctrl *p = arg; 2090 struct v4l2_fh *vfh = 2091 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2092 2093 if (vfh && vfh->ctrl_handler) 2094 return v4l2_queryctrl(vfh->ctrl_handler, p); 2095 if (vfd->ctrl_handler) 2096 return v4l2_queryctrl(vfd->ctrl_handler, p); 2097 if (ops->vidioc_queryctrl) 2098 return ops->vidioc_queryctrl(file, fh, p); 2099 return -ENOTTY; 2100 } 2101 2102 static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops, 2103 struct file *file, void *fh, void *arg) 2104 { 2105 struct video_device *vfd = video_devdata(file); 2106 struct v4l2_query_ext_ctrl *p = arg; 2107 struct v4l2_fh *vfh = 2108 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2109 2110 if (vfh && vfh->ctrl_handler) 2111 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p); 2112 if (vfd->ctrl_handler) 2113 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p); 2114 if (ops->vidioc_query_ext_ctrl) 2115 return ops->vidioc_query_ext_ctrl(file, fh, p); 2116 return -ENOTTY; 2117 } 2118 2119 static int v4l_querymenu(const struct v4l2_ioctl_ops *ops, 2120 struct file *file, void *fh, void *arg) 2121 { 2122 struct video_device *vfd = video_devdata(file); 2123 struct v4l2_querymenu *p = arg; 2124 struct v4l2_fh *vfh = 2125 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2126 2127 if (vfh && vfh->ctrl_handler) 2128 return v4l2_querymenu(vfh->ctrl_handler, p); 2129 if (vfd->ctrl_handler) 2130 return v4l2_querymenu(vfd->ctrl_handler, p); 2131 if (ops->vidioc_querymenu) 2132 return ops->vidioc_querymenu(file, fh, p); 2133 return -ENOTTY; 2134 } 2135 2136 static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops, 2137 struct file *file, void *fh, void *arg) 2138 { 2139 struct video_device *vfd = video_devdata(file); 2140 struct v4l2_control *p = arg; 2141 struct v4l2_fh *vfh = 2142 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2143 struct v4l2_ext_controls ctrls; 2144 struct v4l2_ext_control ctrl; 2145 2146 if (vfh && vfh->ctrl_handler) 2147 return v4l2_g_ctrl(vfh->ctrl_handler, p); 2148 if (vfd->ctrl_handler) 2149 return v4l2_g_ctrl(vfd->ctrl_handler, p); 2150 if (ops->vidioc_g_ctrl) 2151 return ops->vidioc_g_ctrl(file, fh, p); 2152 if (ops->vidioc_g_ext_ctrls == NULL) 2153 return -ENOTTY; 2154 2155 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2156 ctrls.count = 1; 2157 ctrls.controls = &ctrl; 2158 ctrl.id = p->id; 2159 ctrl.value = p->value; 2160 if (check_ext_ctrls(&ctrls, 1)) { 2161 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls); 2162 2163 if (ret == 0) 2164 p->value = ctrl.value; 2165 return ret; 2166 } 2167 return -EINVAL; 2168 } 2169 2170 static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, 2171 struct file *file, void *fh, void *arg) 2172 { 2173 struct video_device *vfd = video_devdata(file); 2174 struct v4l2_control *p = arg; 2175 struct v4l2_fh *vfh = 2176 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2177 struct v4l2_ext_controls ctrls; 2178 struct v4l2_ext_control ctrl; 2179 2180 if (vfh && vfh->ctrl_handler) 2181 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p); 2182 if (vfd->ctrl_handler) 2183 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p); 2184 if (ops->vidioc_s_ctrl) 2185 return ops->vidioc_s_ctrl(file, fh, p); 2186 if (ops->vidioc_s_ext_ctrls == NULL) 2187 return -ENOTTY; 2188 2189 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2190 ctrls.count = 1; 2191 ctrls.controls = &ctrl; 2192 ctrl.id = p->id; 2193 ctrl.value = p->value; 2194 if (check_ext_ctrls(&ctrls, 1)) 2195 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls); 2196 return -EINVAL; 2197 } 2198 2199 static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2200 struct file *file, void *fh, void *arg) 2201 { 2202 struct video_device *vfd = video_devdata(file); 2203 struct v4l2_ext_controls *p = arg; 2204 struct v4l2_fh *vfh = 2205 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2206 2207 p->error_idx = p->count; 2208 if (vfh && vfh->ctrl_handler) 2209 return v4l2_g_ext_ctrls(vfh->ctrl_handler, 2210 vfd, vfd->v4l2_dev->mdev, p); 2211 if (vfd->ctrl_handler) 2212 return v4l2_g_ext_ctrls(vfd->ctrl_handler, 2213 vfd, vfd->v4l2_dev->mdev, p); 2214 if (ops->vidioc_g_ext_ctrls == NULL) 2215 return -ENOTTY; 2216 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) : 2217 -EINVAL; 2218 } 2219 2220 static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2221 struct file *file, void *fh, void *arg) 2222 { 2223 struct video_device *vfd = video_devdata(file); 2224 struct v4l2_ext_controls *p = arg; 2225 struct v4l2_fh *vfh = 2226 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2227 2228 p->error_idx = p->count; 2229 if (vfh && vfh->ctrl_handler) 2230 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, 2231 vfd, vfd->v4l2_dev->mdev, p); 2232 if (vfd->ctrl_handler) 2233 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, 2234 vfd, vfd->v4l2_dev->mdev, p); 2235 if (ops->vidioc_s_ext_ctrls == NULL) 2236 return -ENOTTY; 2237 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) : 2238 -EINVAL; 2239 } 2240 2241 static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2242 struct file *file, void *fh, void *arg) 2243 { 2244 struct video_device *vfd = video_devdata(file); 2245 struct v4l2_ext_controls *p = arg; 2246 struct v4l2_fh *vfh = 2247 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2248 2249 p->error_idx = p->count; 2250 if (vfh && vfh->ctrl_handler) 2251 return v4l2_try_ext_ctrls(vfh->ctrl_handler, 2252 vfd, vfd->v4l2_dev->mdev, p); 2253 if (vfd->ctrl_handler) 2254 return v4l2_try_ext_ctrls(vfd->ctrl_handler, 2255 vfd, vfd->v4l2_dev->mdev, p); 2256 if (ops->vidioc_try_ext_ctrls == NULL) 2257 return -ENOTTY; 2258 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) : 2259 -EINVAL; 2260 } 2261 2262 /* 2263 * The selection API specified originally that the _MPLANE buffer types 2264 * shouldn't be used. The reasons for this are lost in the mists of time 2265 * (or just really crappy memories). Regardless, this is really annoying 2266 * for userspace. So to keep things simple we map _MPLANE buffer types 2267 * to their 'regular' counterparts before calling the driver. And we 2268 * restore it afterwards. This way applications can use either buffer 2269 * type and drivers don't need to check for both. 2270 */ 2271 static int v4l_g_selection(const struct v4l2_ioctl_ops *ops, 2272 struct file *file, void *fh, void *arg) 2273 { 2274 struct v4l2_selection *p = arg; 2275 u32 old_type = p->type; 2276 int ret; 2277 2278 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2279 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2280 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2281 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2282 ret = ops->vidioc_g_selection(file, fh, p); 2283 p->type = old_type; 2284 return ret; 2285 } 2286 2287 static int v4l_s_selection(const struct v4l2_ioctl_ops *ops, 2288 struct file *file, void *fh, void *arg) 2289 { 2290 struct v4l2_selection *p = arg; 2291 u32 old_type = p->type; 2292 int ret; 2293 2294 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2295 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2296 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2297 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2298 ret = ops->vidioc_s_selection(file, fh, p); 2299 p->type = old_type; 2300 return ret; 2301 } 2302 2303 static int v4l_g_crop(const struct v4l2_ioctl_ops *ops, 2304 struct file *file, void *fh, void *arg) 2305 { 2306 struct video_device *vfd = video_devdata(file); 2307 struct v4l2_crop *p = arg; 2308 struct v4l2_selection s = { 2309 .type = p->type, 2310 }; 2311 int ret; 2312 2313 /* simulate capture crop using selection api */ 2314 2315 /* crop means compose for output devices */ 2316 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2317 s.target = V4L2_SEL_TGT_COMPOSE; 2318 else 2319 s.target = V4L2_SEL_TGT_CROP; 2320 2321 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2322 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2323 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2324 2325 ret = v4l_g_selection(ops, file, fh, &s); 2326 2327 /* copying results to old structure on success */ 2328 if (!ret) 2329 p->c = s.r; 2330 return ret; 2331 } 2332 2333 static int v4l_s_crop(const struct v4l2_ioctl_ops *ops, 2334 struct file *file, void *fh, void *arg) 2335 { 2336 struct video_device *vfd = video_devdata(file); 2337 struct v4l2_crop *p = arg; 2338 struct v4l2_selection s = { 2339 .type = p->type, 2340 .r = p->c, 2341 }; 2342 2343 /* simulate capture crop using selection api */ 2344 2345 /* crop means compose for output devices */ 2346 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2347 s.target = V4L2_SEL_TGT_COMPOSE; 2348 else 2349 s.target = V4L2_SEL_TGT_CROP; 2350 2351 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2352 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2353 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2354 2355 return v4l_s_selection(ops, file, fh, &s); 2356 } 2357 2358 static int v4l_cropcap(const struct v4l2_ioctl_ops *ops, 2359 struct file *file, void *fh, void *arg) 2360 { 2361 struct video_device *vfd = video_devdata(file); 2362 struct v4l2_cropcap *p = arg; 2363 struct v4l2_selection s = { .type = p->type }; 2364 int ret = 0; 2365 2366 /* setting trivial pixelaspect */ 2367 p->pixelaspect.numerator = 1; 2368 p->pixelaspect.denominator = 1; 2369 2370 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2371 s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2372 else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2373 s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2374 2375 /* 2376 * The determine_valid_ioctls() call already should ensure 2377 * that this can never happen, but just in case... 2378 */ 2379 if (WARN_ON(!ops->vidioc_g_selection)) 2380 return -ENOTTY; 2381 2382 if (ops->vidioc_g_pixelaspect) 2383 ret = ops->vidioc_g_pixelaspect(file, fh, s.type, 2384 &p->pixelaspect); 2385 2386 /* 2387 * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the 2388 * square pixel aspect ratio in that case. 2389 */ 2390 if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD) 2391 return ret; 2392 2393 /* Use g_selection() to fill in the bounds and defrect rectangles */ 2394 2395 /* obtaining bounds */ 2396 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2397 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS; 2398 else 2399 s.target = V4L2_SEL_TGT_CROP_BOUNDS; 2400 2401 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2402 s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ? 2403 V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS; 2404 2405 ret = v4l_g_selection(ops, file, fh, &s); 2406 if (ret) 2407 return ret; 2408 p->bounds = s.r; 2409 2410 /* obtaining defrect */ 2411 if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS) 2412 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT; 2413 else 2414 s.target = V4L2_SEL_TGT_CROP_DEFAULT; 2415 2416 ret = v4l_g_selection(ops, file, fh, &s); 2417 if (ret) 2418 return ret; 2419 p->defrect = s.r; 2420 2421 return 0; 2422 } 2423 2424 static int v4l_log_status(const struct v4l2_ioctl_ops *ops, 2425 struct file *file, void *fh, void *arg) 2426 { 2427 struct video_device *vfd = video_devdata(file); 2428 int ret; 2429 2430 if (vfd->v4l2_dev) 2431 pr_info("%s: ================= START STATUS =================\n", 2432 vfd->v4l2_dev->name); 2433 ret = ops->vidioc_log_status(file, fh); 2434 if (vfd->v4l2_dev) 2435 pr_info("%s: ================== END STATUS ==================\n", 2436 vfd->v4l2_dev->name); 2437 return ret; 2438 } 2439 2440 static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops, 2441 struct file *file, void *fh, void *arg) 2442 { 2443 #ifdef CONFIG_VIDEO_ADV_DEBUG 2444 struct v4l2_dbg_register *p = arg; 2445 struct video_device *vfd = video_devdata(file); 2446 struct v4l2_subdev *sd; 2447 int idx = 0; 2448 2449 if (!capable(CAP_SYS_ADMIN)) 2450 return -EPERM; 2451 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2452 if (vfd->v4l2_dev == NULL) 2453 return -EINVAL; 2454 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2455 if (p->match.addr == idx++) 2456 return v4l2_subdev_call(sd, core, g_register, p); 2457 return -EINVAL; 2458 } 2459 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2460 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2461 return ops->vidioc_g_register(file, fh, p); 2462 return -EINVAL; 2463 #else 2464 return -ENOTTY; 2465 #endif 2466 } 2467 2468 static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops, 2469 struct file *file, void *fh, void *arg) 2470 { 2471 #ifdef CONFIG_VIDEO_ADV_DEBUG 2472 const struct v4l2_dbg_register *p = arg; 2473 struct video_device *vfd = video_devdata(file); 2474 struct v4l2_subdev *sd; 2475 int idx = 0; 2476 2477 if (!capable(CAP_SYS_ADMIN)) 2478 return -EPERM; 2479 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2480 if (vfd->v4l2_dev == NULL) 2481 return -EINVAL; 2482 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2483 if (p->match.addr == idx++) 2484 return v4l2_subdev_call(sd, core, s_register, p); 2485 return -EINVAL; 2486 } 2487 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2488 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2489 return ops->vidioc_s_register(file, fh, p); 2490 return -EINVAL; 2491 #else 2492 return -ENOTTY; 2493 #endif 2494 } 2495 2496 static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops, 2497 struct file *file, void *fh, void *arg) 2498 { 2499 #ifdef CONFIG_VIDEO_ADV_DEBUG 2500 struct video_device *vfd = video_devdata(file); 2501 struct v4l2_dbg_chip_info *p = arg; 2502 struct v4l2_subdev *sd; 2503 int idx = 0; 2504 2505 switch (p->match.type) { 2506 case V4L2_CHIP_MATCH_BRIDGE: 2507 if (ops->vidioc_s_register) 2508 p->flags |= V4L2_CHIP_FL_WRITABLE; 2509 if (ops->vidioc_g_register) 2510 p->flags |= V4L2_CHIP_FL_READABLE; 2511 strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name)); 2512 if (ops->vidioc_g_chip_info) 2513 return ops->vidioc_g_chip_info(file, fh, arg); 2514 if (p->match.addr) 2515 return -EINVAL; 2516 return 0; 2517 2518 case V4L2_CHIP_MATCH_SUBDEV: 2519 if (vfd->v4l2_dev == NULL) 2520 break; 2521 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) { 2522 if (p->match.addr != idx++) 2523 continue; 2524 if (sd->ops->core && sd->ops->core->s_register) 2525 p->flags |= V4L2_CHIP_FL_WRITABLE; 2526 if (sd->ops->core && sd->ops->core->g_register) 2527 p->flags |= V4L2_CHIP_FL_READABLE; 2528 strscpy(p->name, sd->name, sizeof(p->name)); 2529 return 0; 2530 } 2531 break; 2532 } 2533 return -EINVAL; 2534 #else 2535 return -ENOTTY; 2536 #endif 2537 } 2538 2539 static int v4l_dqevent(const struct v4l2_ioctl_ops *ops, 2540 struct file *file, void *fh, void *arg) 2541 { 2542 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK); 2543 } 2544 2545 static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops, 2546 struct file *file, void *fh, void *arg) 2547 { 2548 return ops->vidioc_subscribe_event(fh, arg); 2549 } 2550 2551 static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops, 2552 struct file *file, void *fh, void *arg) 2553 { 2554 return ops->vidioc_unsubscribe_event(fh, arg); 2555 } 2556 2557 static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops, 2558 struct file *file, void *fh, void *arg) 2559 { 2560 struct v4l2_sliced_vbi_cap *p = arg; 2561 int ret = check_fmt(file, p->type); 2562 2563 if (ret) 2564 return ret; 2565 2566 /* Clear up to type, everything after type is zeroed already */ 2567 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type)); 2568 2569 return ops->vidioc_g_sliced_vbi_cap(file, fh, p); 2570 } 2571 2572 static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops, 2573 struct file *file, void *fh, void *arg) 2574 { 2575 struct video_device *vfd = video_devdata(file); 2576 struct v4l2_frequency_band *p = arg; 2577 enum v4l2_tuner_type type; 2578 int err; 2579 2580 if (vfd->vfl_type == VFL_TYPE_SDR) { 2581 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 2582 return -EINVAL; 2583 type = p->type; 2584 } else { 2585 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2586 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2587 if (type != p->type) 2588 return -EINVAL; 2589 } 2590 if (ops->vidioc_enum_freq_bands) { 2591 err = ops->vidioc_enum_freq_bands(file, fh, p); 2592 if (err != -ENOTTY) 2593 return err; 2594 } 2595 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) { 2596 struct v4l2_tuner t = { 2597 .index = p->tuner, 2598 .type = type, 2599 }; 2600 2601 if (p->index) 2602 return -EINVAL; 2603 err = ops->vidioc_g_tuner(file, fh, &t); 2604 if (err) 2605 return err; 2606 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2607 p->rangelow = t.rangelow; 2608 p->rangehigh = t.rangehigh; 2609 p->modulation = (type == V4L2_TUNER_RADIO) ? 2610 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2611 return 0; 2612 } 2613 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) { 2614 struct v4l2_modulator m = { 2615 .index = p->tuner, 2616 }; 2617 2618 if (type != V4L2_TUNER_RADIO) 2619 return -EINVAL; 2620 if (p->index) 2621 return -EINVAL; 2622 err = ops->vidioc_g_modulator(file, fh, &m); 2623 if (err) 2624 return err; 2625 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2626 p->rangelow = m.rangelow; 2627 p->rangehigh = m.rangehigh; 2628 p->modulation = (type == V4L2_TUNER_RADIO) ? 2629 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2630 return 0; 2631 } 2632 return -ENOTTY; 2633 } 2634 2635 struct v4l2_ioctl_info { 2636 unsigned int ioctl; 2637 u32 flags; 2638 const char * const name; 2639 int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file, 2640 void *fh, void *p); 2641 void (*debug)(const void *arg, bool write_only); 2642 }; 2643 2644 /* This control needs a priority check */ 2645 #define INFO_FL_PRIO (1 << 0) 2646 /* This control can be valid if the filehandle passes a control handler. */ 2647 #define INFO_FL_CTRL (1 << 1) 2648 /* Queuing ioctl */ 2649 #define INFO_FL_QUEUE (1 << 2) 2650 /* Always copy back result, even on error */ 2651 #define INFO_FL_ALWAYS_COPY (1 << 3) 2652 /* Zero struct from after the field to the end */ 2653 #define INFO_FL_CLEAR(v4l2_struct, field) \ 2654 ((offsetof(struct v4l2_struct, field) + \ 2655 sizeof_field(struct v4l2_struct, field)) << 16) 2656 #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16) 2657 2658 #define DEFINE_V4L_STUB_FUNC(_vidioc) \ 2659 static int v4l_stub_ ## _vidioc( \ 2660 const struct v4l2_ioctl_ops *ops, \ 2661 struct file *file, void *fh, void *p) \ 2662 { \ 2663 return ops->vidioc_ ## _vidioc(file, fh, p); \ 2664 } 2665 2666 #define IOCTL_INFO(_ioctl, _func, _debug, _flags) \ 2667 [_IOC_NR(_ioctl)] = { \ 2668 .ioctl = _ioctl, \ 2669 .flags = _flags, \ 2670 .name = #_ioctl, \ 2671 .func = _func, \ 2672 .debug = _debug, \ 2673 } 2674 2675 DEFINE_V4L_STUB_FUNC(g_fbuf) 2676 DEFINE_V4L_STUB_FUNC(s_fbuf) 2677 DEFINE_V4L_STUB_FUNC(expbuf) 2678 DEFINE_V4L_STUB_FUNC(g_std) 2679 DEFINE_V4L_STUB_FUNC(g_audio) 2680 DEFINE_V4L_STUB_FUNC(s_audio) 2681 DEFINE_V4L_STUB_FUNC(g_input) 2682 DEFINE_V4L_STUB_FUNC(g_edid) 2683 DEFINE_V4L_STUB_FUNC(s_edid) 2684 DEFINE_V4L_STUB_FUNC(g_output) 2685 DEFINE_V4L_STUB_FUNC(g_audout) 2686 DEFINE_V4L_STUB_FUNC(s_audout) 2687 DEFINE_V4L_STUB_FUNC(g_jpegcomp) 2688 DEFINE_V4L_STUB_FUNC(s_jpegcomp) 2689 DEFINE_V4L_STUB_FUNC(enumaudio) 2690 DEFINE_V4L_STUB_FUNC(enumaudout) 2691 DEFINE_V4L_STUB_FUNC(enum_framesizes) 2692 DEFINE_V4L_STUB_FUNC(enum_frameintervals) 2693 DEFINE_V4L_STUB_FUNC(g_enc_index) 2694 DEFINE_V4L_STUB_FUNC(encoder_cmd) 2695 DEFINE_V4L_STUB_FUNC(try_encoder_cmd) 2696 DEFINE_V4L_STUB_FUNC(decoder_cmd) 2697 DEFINE_V4L_STUB_FUNC(try_decoder_cmd) 2698 DEFINE_V4L_STUB_FUNC(s_dv_timings) 2699 DEFINE_V4L_STUB_FUNC(g_dv_timings) 2700 DEFINE_V4L_STUB_FUNC(enum_dv_timings) 2701 DEFINE_V4L_STUB_FUNC(query_dv_timings) 2702 DEFINE_V4L_STUB_FUNC(dv_timings_cap) 2703 2704 static const struct v4l2_ioctl_info v4l2_ioctls[] = { 2705 IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0), 2706 IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)), 2707 IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0), 2708 IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO), 2709 IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2710 IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)), 2711 IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0), 2712 IOCTL_INFO(VIDIOC_S_FBUF, v4l_stub_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO), 2713 IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO), 2714 IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE), 2715 IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)), 2716 IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE), 2717 IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2718 IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2719 IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)), 2720 IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO), 2721 IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0), 2722 IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO), 2723 IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)), 2724 IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)), 2725 IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)), 2726 IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL), 2727 IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)), 2728 IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO), 2729 IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0), 2730 IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO), 2731 IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)), 2732 IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)), 2733 IOCTL_INFO(VIDIOC_G_INPUT, v4l_stub_g_input, v4l_print_u32, 0), 2734 IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO), 2735 IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY), 2736 IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY), 2737 IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_stub_g_output, v4l_print_u32, 0), 2738 IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO), 2739 IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)), 2740 IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0), 2741 IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO), 2742 IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)), 2743 IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO), 2744 IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)), 2745 IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO), 2746 IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)), 2747 IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)), 2748 IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO), 2749 IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)), 2750 IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)), 2751 IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0), 2752 IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO), 2753 IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0), 2754 IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0), 2755 IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)), 2756 IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)), 2757 IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0), 2758 IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO), 2759 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)), 2760 IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0), 2761 IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL), 2762 IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL), 2763 IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL), 2764 IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)), 2765 IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)), 2766 IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0), 2767 IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2768 IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2769 IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO), 2770 IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0), 2771 IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0), 2772 IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0), 2773 IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO), 2774 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)), 2775 IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0), 2776 IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0), 2777 IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0), 2778 IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0), 2779 IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2780 IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE), 2781 IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)), 2782 IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY), 2783 IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)), 2784 IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0), 2785 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)), 2786 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)), 2787 }; 2788 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) 2789 2790 static bool v4l2_is_known_ioctl(unsigned int cmd) 2791 { 2792 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2793 return false; 2794 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd; 2795 } 2796 2797 static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, 2798 struct v4l2_fh *vfh, unsigned int cmd, 2799 void *arg) 2800 { 2801 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2802 return vdev->lock; 2803 #if IS_ENABLED(CONFIG_V4L2_MEM2MEM_DEV) 2804 if (vfh && vfh->m2m_ctx && 2805 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) { 2806 if (vfh->m2m_ctx->q_lock) 2807 return vfh->m2m_ctx->q_lock; 2808 } 2809 #endif 2810 if (vdev->queue && vdev->queue->lock && 2811 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) 2812 return vdev->queue->lock; 2813 return vdev->lock; 2814 } 2815 2816 /* Common ioctl debug function. This function can be used by 2817 external ioctl messages as well as internal V4L ioctl */ 2818 void v4l_printk_ioctl(const char *prefix, unsigned int cmd) 2819 { 2820 const char *dir, *type; 2821 2822 if (prefix) 2823 printk(KERN_DEBUG "%s: ", prefix); 2824 2825 switch (_IOC_TYPE(cmd)) { 2826 case 'd': 2827 type = "v4l2_int"; 2828 break; 2829 case 'V': 2830 if (_IOC_NR(cmd) >= V4L2_IOCTLS) { 2831 type = "v4l2"; 2832 break; 2833 } 2834 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name); 2835 return; 2836 default: 2837 type = "unknown"; 2838 break; 2839 } 2840 2841 switch (_IOC_DIR(cmd)) { 2842 case _IOC_NONE: dir = "--"; break; 2843 case _IOC_READ: dir = "r-"; break; 2844 case _IOC_WRITE: dir = "-w"; break; 2845 case _IOC_READ | _IOC_WRITE: dir = "rw"; break; 2846 default: dir = "*ERR*"; break; 2847 } 2848 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)", 2849 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd); 2850 } 2851 EXPORT_SYMBOL(v4l_printk_ioctl); 2852 2853 static long __video_do_ioctl(struct file *file, 2854 unsigned int cmd, void *arg) 2855 { 2856 struct video_device *vfd = video_devdata(file); 2857 struct mutex *req_queue_lock = NULL; 2858 struct mutex *lock; /* ioctl serialization mutex */ 2859 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 2860 bool write_only = false; 2861 struct v4l2_ioctl_info default_info; 2862 const struct v4l2_ioctl_info *info; 2863 void *fh = file->private_data; 2864 struct v4l2_fh *vfh = NULL; 2865 int dev_debug = vfd->dev_debug; 2866 long ret = -ENOTTY; 2867 2868 if (ops == NULL) { 2869 pr_warn("%s: has no ioctl_ops.\n", 2870 video_device_node_name(vfd)); 2871 return ret; 2872 } 2873 2874 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 2875 vfh = file->private_data; 2876 2877 /* 2878 * We need to serialize streamon/off with queueing new requests. 2879 * These ioctls may trigger the cancellation of a streaming 2880 * operation, and that should not be mixed with queueing a new 2881 * request at the same time. 2882 */ 2883 if (v4l2_device_supports_requests(vfd->v4l2_dev) && 2884 (cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF)) { 2885 req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex; 2886 2887 if (mutex_lock_interruptible(req_queue_lock)) 2888 return -ERESTARTSYS; 2889 } 2890 2891 lock = v4l2_ioctl_get_lock(vfd, vfh, cmd, arg); 2892 2893 if (lock && mutex_lock_interruptible(lock)) { 2894 if (req_queue_lock) 2895 mutex_unlock(req_queue_lock); 2896 return -ERESTARTSYS; 2897 } 2898 2899 if (!video_is_registered(vfd)) { 2900 ret = -ENODEV; 2901 goto unlock; 2902 } 2903 2904 if (v4l2_is_known_ioctl(cmd)) { 2905 info = &v4l2_ioctls[_IOC_NR(cmd)]; 2906 2907 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) && 2908 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler)) 2909 goto done; 2910 2911 if (vfh && (info->flags & INFO_FL_PRIO)) { 2912 ret = v4l2_prio_check(vfd->prio, vfh->prio); 2913 if (ret) 2914 goto done; 2915 } 2916 } else { 2917 default_info.ioctl = cmd; 2918 default_info.flags = 0; 2919 default_info.debug = v4l_print_default; 2920 info = &default_info; 2921 } 2922 2923 write_only = _IOC_DIR(cmd) == _IOC_WRITE; 2924 if (info != &default_info) { 2925 ret = info->func(ops, file, fh, arg); 2926 } else if (!ops->vidioc_default) { 2927 ret = -ENOTTY; 2928 } else { 2929 ret = ops->vidioc_default(file, fh, 2930 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0, 2931 cmd, arg); 2932 } 2933 2934 done: 2935 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) { 2936 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) && 2937 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF)) 2938 goto unlock; 2939 2940 v4l_printk_ioctl(video_device_node_name(vfd), cmd); 2941 if (ret < 0) 2942 pr_cont(": error %ld", ret); 2943 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG)) 2944 pr_cont("\n"); 2945 else if (_IOC_DIR(cmd) == _IOC_NONE) 2946 info->debug(arg, write_only); 2947 else { 2948 pr_cont(": "); 2949 info->debug(arg, write_only); 2950 } 2951 } 2952 2953 unlock: 2954 if (lock) 2955 mutex_unlock(lock); 2956 if (req_queue_lock) 2957 mutex_unlock(req_queue_lock); 2958 return ret; 2959 } 2960 2961 static int check_array_args(unsigned int cmd, void *parg, size_t *array_size, 2962 void __user **user_ptr, void ***kernel_ptr) 2963 { 2964 int ret = 0; 2965 2966 switch (cmd) { 2967 case VIDIOC_PREPARE_BUF: 2968 case VIDIOC_QUERYBUF: 2969 case VIDIOC_QBUF: 2970 case VIDIOC_DQBUF: { 2971 struct v4l2_buffer *buf = parg; 2972 2973 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) { 2974 if (buf->length > VIDEO_MAX_PLANES) { 2975 ret = -EINVAL; 2976 break; 2977 } 2978 *user_ptr = (void __user *)buf->m.planes; 2979 *kernel_ptr = (void **)&buf->m.planes; 2980 *array_size = sizeof(struct v4l2_plane) * buf->length; 2981 ret = 1; 2982 } 2983 break; 2984 } 2985 2986 case VIDIOC_G_EDID: 2987 case VIDIOC_S_EDID: { 2988 struct v4l2_edid *edid = parg; 2989 2990 if (edid->blocks) { 2991 if (edid->blocks > 256) { 2992 ret = -EINVAL; 2993 break; 2994 } 2995 *user_ptr = (void __user *)edid->edid; 2996 *kernel_ptr = (void **)&edid->edid; 2997 *array_size = edid->blocks * 128; 2998 ret = 1; 2999 } 3000 break; 3001 } 3002 3003 case VIDIOC_S_EXT_CTRLS: 3004 case VIDIOC_G_EXT_CTRLS: 3005 case VIDIOC_TRY_EXT_CTRLS: { 3006 struct v4l2_ext_controls *ctrls = parg; 3007 3008 if (ctrls->count != 0) { 3009 if (ctrls->count > V4L2_CID_MAX_CTRLS) { 3010 ret = -EINVAL; 3011 break; 3012 } 3013 *user_ptr = (void __user *)ctrls->controls; 3014 *kernel_ptr = (void **)&ctrls->controls; 3015 *array_size = sizeof(struct v4l2_ext_control) 3016 * ctrls->count; 3017 ret = 1; 3018 } 3019 break; 3020 } 3021 } 3022 3023 return ret; 3024 } 3025 3026 static unsigned int video_translate_cmd(unsigned int cmd) 3027 { 3028 switch (cmd) { 3029 #ifdef CONFIG_COMPAT_32BIT_TIME 3030 case VIDIOC_DQEVENT_TIME32: 3031 return VIDIOC_DQEVENT; 3032 case VIDIOC_QUERYBUF_TIME32: 3033 return VIDIOC_QUERYBUF; 3034 case VIDIOC_QBUF_TIME32: 3035 return VIDIOC_QBUF; 3036 case VIDIOC_DQBUF_TIME32: 3037 return VIDIOC_DQBUF; 3038 case VIDIOC_PREPARE_BUF_TIME32: 3039 return VIDIOC_PREPARE_BUF; 3040 #endif 3041 } 3042 3043 return cmd; 3044 } 3045 3046 static int video_get_user(void __user *arg, void *parg, unsigned int cmd, 3047 bool *always_copy) 3048 { 3049 unsigned int n = _IOC_SIZE(cmd); 3050 3051 if (!(_IOC_DIR(cmd) & _IOC_WRITE)) { 3052 /* read-only ioctl */ 3053 memset(parg, 0, n); 3054 return 0; 3055 } 3056 3057 switch (cmd) { 3058 #ifdef CONFIG_COMPAT_32BIT_TIME 3059 case VIDIOC_QUERYBUF_TIME32: 3060 case VIDIOC_QBUF_TIME32: 3061 case VIDIOC_DQBUF_TIME32: 3062 case VIDIOC_PREPARE_BUF_TIME32: { 3063 struct v4l2_buffer_time32 vb32; 3064 struct v4l2_buffer *vb = parg; 3065 3066 if (copy_from_user(&vb32, arg, sizeof(vb32))) 3067 return -EFAULT; 3068 3069 *vb = (struct v4l2_buffer) { 3070 .index = vb32.index, 3071 .type = vb32.type, 3072 .bytesused = vb32.bytesused, 3073 .flags = vb32.flags, 3074 .field = vb32.field, 3075 .timestamp.tv_sec = vb32.timestamp.tv_sec, 3076 .timestamp.tv_usec = vb32.timestamp.tv_usec, 3077 .timecode = vb32.timecode, 3078 .sequence = vb32.sequence, 3079 .memory = vb32.memory, 3080 .m.userptr = vb32.m.userptr, 3081 .length = vb32.length, 3082 .request_fd = vb32.request_fd, 3083 }; 3084 3085 if (cmd == VIDIOC_QUERYBUF_TIME32) 3086 vb->request_fd = 0; 3087 3088 break; 3089 } 3090 #endif 3091 default: 3092 /* 3093 * In some cases, only a few fields are used as input, 3094 * i.e. when the app sets "index" and then the driver 3095 * fills in the rest of the structure for the thing 3096 * with that index. We only need to copy up the first 3097 * non-input field. 3098 */ 3099 if (v4l2_is_known_ioctl(cmd)) { 3100 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags; 3101 3102 if (flags & INFO_FL_CLEAR_MASK) 3103 n = (flags & INFO_FL_CLEAR_MASK) >> 16; 3104 *always_copy = flags & INFO_FL_ALWAYS_COPY; 3105 } 3106 3107 if (copy_from_user(parg, (void __user *)arg, n)) 3108 return -EFAULT; 3109 3110 /* zero out anything we don't copy from userspace */ 3111 if (n < _IOC_SIZE(cmd)) 3112 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n); 3113 break; 3114 } 3115 3116 return 0; 3117 } 3118 3119 static int video_put_user(void __user *arg, void *parg, unsigned int cmd) 3120 { 3121 if (!(_IOC_DIR(cmd) & _IOC_READ)) 3122 return 0; 3123 3124 switch (cmd) { 3125 #ifdef CONFIG_COMPAT_32BIT_TIME 3126 case VIDIOC_DQEVENT_TIME32: { 3127 struct v4l2_event *ev = parg; 3128 struct v4l2_event_time32 ev32 = { 3129 .type = ev->type, 3130 .pending = ev->pending, 3131 .sequence = ev->sequence, 3132 .timestamp.tv_sec = ev->timestamp.tv_sec, 3133 .timestamp.tv_nsec = ev->timestamp.tv_nsec, 3134 .id = ev->id, 3135 }; 3136 3137 memcpy(&ev32.u, &ev->u, sizeof(ev->u)); 3138 memcpy(&ev32.reserved, &ev->reserved, sizeof(ev->reserved)); 3139 3140 if (copy_to_user(arg, &ev32, sizeof(ev32))) 3141 return -EFAULT; 3142 break; 3143 } 3144 case VIDIOC_QUERYBUF_TIME32: 3145 case VIDIOC_QBUF_TIME32: 3146 case VIDIOC_DQBUF_TIME32: 3147 case VIDIOC_PREPARE_BUF_TIME32: { 3148 struct v4l2_buffer *vb = parg; 3149 struct v4l2_buffer_time32 vb32 = { 3150 .index = vb->index, 3151 .type = vb->type, 3152 .bytesused = vb->bytesused, 3153 .flags = vb->flags, 3154 .field = vb->field, 3155 .timestamp.tv_sec = vb->timestamp.tv_sec, 3156 .timestamp.tv_usec = vb->timestamp.tv_usec, 3157 .timecode = vb->timecode, 3158 .sequence = vb->sequence, 3159 .memory = vb->memory, 3160 .m.userptr = vb->m.userptr, 3161 .length = vb->length, 3162 .request_fd = vb->request_fd, 3163 }; 3164 3165 if (copy_to_user(arg, &vb32, sizeof(vb32))) 3166 return -EFAULT; 3167 break; 3168 } 3169 #endif 3170 default: 3171 /* Copy results into user buffer */ 3172 if (copy_to_user(arg, parg, _IOC_SIZE(cmd))) 3173 return -EFAULT; 3174 break; 3175 } 3176 3177 return 0; 3178 } 3179 3180 long 3181 video_usercopy(struct file *file, unsigned int orig_cmd, unsigned long arg, 3182 v4l2_kioctl func) 3183 { 3184 char sbuf[128]; 3185 void *mbuf = NULL; 3186 void *parg = (void *)arg; 3187 long err = -EINVAL; 3188 bool has_array_args; 3189 bool always_copy = false; 3190 size_t array_size = 0; 3191 void __user *user_ptr = NULL; 3192 void **kernel_ptr = NULL; 3193 unsigned int cmd = video_translate_cmd(orig_cmd); 3194 const size_t ioc_size = _IOC_SIZE(cmd); 3195 3196 /* Copy arguments into temp kernel buffer */ 3197 if (_IOC_DIR(cmd) != _IOC_NONE) { 3198 if (ioc_size <= sizeof(sbuf)) { 3199 parg = sbuf; 3200 } else { 3201 /* too big to allocate from stack */ 3202 mbuf = kvmalloc(ioc_size, GFP_KERNEL); 3203 if (NULL == mbuf) 3204 return -ENOMEM; 3205 parg = mbuf; 3206 } 3207 3208 err = video_get_user((void __user *)arg, parg, orig_cmd, 3209 &always_copy); 3210 if (err) 3211 goto out; 3212 } 3213 3214 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr); 3215 if (err < 0) 3216 goto out; 3217 has_array_args = err; 3218 3219 if (has_array_args) { 3220 /* 3221 * When adding new types of array args, make sure that the 3222 * parent argument to ioctl (which contains the pointer to the 3223 * array) fits into sbuf (so that mbuf will still remain 3224 * unused up to here). 3225 */ 3226 mbuf = kvmalloc(array_size, GFP_KERNEL); 3227 err = -ENOMEM; 3228 if (NULL == mbuf) 3229 goto out_array_args; 3230 err = -EFAULT; 3231 if (copy_from_user(mbuf, user_ptr, array_size)) 3232 goto out_array_args; 3233 *kernel_ptr = mbuf; 3234 } 3235 3236 /* Handles IOCTL */ 3237 err = func(file, cmd, parg); 3238 if (err == -ENOTTY || err == -ENOIOCTLCMD) { 3239 err = -ENOTTY; 3240 goto out; 3241 } 3242 3243 if (err == 0) { 3244 if (cmd == VIDIOC_DQBUF) 3245 trace_v4l2_dqbuf(video_devdata(file)->minor, parg); 3246 else if (cmd == VIDIOC_QBUF) 3247 trace_v4l2_qbuf(video_devdata(file)->minor, parg); 3248 } 3249 3250 if (has_array_args) { 3251 *kernel_ptr = (void __force *)user_ptr; 3252 if (copy_to_user(user_ptr, mbuf, array_size)) 3253 err = -EFAULT; 3254 goto out_array_args; 3255 } 3256 /* 3257 * Some ioctls can return an error, but still have valid 3258 * results that must be returned. 3259 */ 3260 if (err < 0 && !always_copy) 3261 goto out; 3262 3263 out_array_args: 3264 if (video_put_user((void __user *)arg, parg, orig_cmd)) 3265 err = -EFAULT; 3266 out: 3267 kvfree(mbuf); 3268 return err; 3269 } 3270 3271 long video_ioctl2(struct file *file, 3272 unsigned int cmd, unsigned long arg) 3273 { 3274 return video_usercopy(file, cmd, arg, __video_do_ioctl); 3275 } 3276 EXPORT_SYMBOL(video_ioctl2); 3277