1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Video capture interface for Linux version 2 4 * 5 * A generic framework to process V4L2 ioctl commands. 6 * 7 * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1) 8 * Mauro Carvalho Chehab <mchehab@kernel.org> (version 2) 9 */ 10 11 #include <linux/compat.h> 12 #include <linux/mm.h> 13 #include <linux/module.h> 14 #include <linux/slab.h> 15 #include <linux/types.h> 16 #include <linux/kernel.h> 17 #include <linux/version.h> 18 19 #include <linux/videodev2.h> 20 21 #include <media/v4l2-common.h> 22 #include <media/v4l2-ioctl.h> 23 #include <media/v4l2-ctrls.h> 24 #include <media/v4l2-fh.h> 25 #include <media/v4l2-event.h> 26 #include <media/v4l2-device.h> 27 #include <media/videobuf2-v4l2.h> 28 #include <media/v4l2-mc.h> 29 #include <media/v4l2-mem2mem.h> 30 31 #include <trace/events/v4l2.h> 32 33 /* Zero out the end of the struct pointed to by p. Everything after, but 34 * not including, the specified field is cleared. */ 35 #define CLEAR_AFTER_FIELD(p, field) \ 36 memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \ 37 0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field)) 38 39 #define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls) 40 41 struct std_descr { 42 v4l2_std_id std; 43 const char *descr; 44 }; 45 46 static const struct std_descr standards[] = { 47 { V4L2_STD_NTSC, "NTSC" }, 48 { V4L2_STD_NTSC_M, "NTSC-M" }, 49 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" }, 50 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" }, 51 { V4L2_STD_NTSC_443, "NTSC-443" }, 52 { V4L2_STD_PAL, "PAL" }, 53 { V4L2_STD_PAL_BG, "PAL-BG" }, 54 { V4L2_STD_PAL_B, "PAL-B" }, 55 { V4L2_STD_PAL_B1, "PAL-B1" }, 56 { V4L2_STD_PAL_G, "PAL-G" }, 57 { V4L2_STD_PAL_H, "PAL-H" }, 58 { V4L2_STD_PAL_I, "PAL-I" }, 59 { V4L2_STD_PAL_DK, "PAL-DK" }, 60 { V4L2_STD_PAL_D, "PAL-D" }, 61 { V4L2_STD_PAL_D1, "PAL-D1" }, 62 { V4L2_STD_PAL_K, "PAL-K" }, 63 { V4L2_STD_PAL_M, "PAL-M" }, 64 { V4L2_STD_PAL_N, "PAL-N" }, 65 { V4L2_STD_PAL_Nc, "PAL-Nc" }, 66 { V4L2_STD_PAL_60, "PAL-60" }, 67 { V4L2_STD_SECAM, "SECAM" }, 68 { V4L2_STD_SECAM_B, "SECAM-B" }, 69 { V4L2_STD_SECAM_G, "SECAM-G" }, 70 { V4L2_STD_SECAM_H, "SECAM-H" }, 71 { V4L2_STD_SECAM_DK, "SECAM-DK" }, 72 { V4L2_STD_SECAM_D, "SECAM-D" }, 73 { V4L2_STD_SECAM_K, "SECAM-K" }, 74 { V4L2_STD_SECAM_K1, "SECAM-K1" }, 75 { V4L2_STD_SECAM_L, "SECAM-L" }, 76 { V4L2_STD_SECAM_LC, "SECAM-Lc" }, 77 { 0, "Unknown" } 78 }; 79 80 /* video4linux standard ID conversion to standard name 81 */ 82 const char *v4l2_norm_to_name(v4l2_std_id id) 83 { 84 u32 myid = id; 85 int i; 86 87 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle 88 64 bit comparisons. So, on that architecture, with some gcc 89 variants, compilation fails. Currently, the max value is 30bit wide. 90 */ 91 BUG_ON(myid != id); 92 93 for (i = 0; standards[i].std; i++) 94 if (myid == standards[i].std) 95 break; 96 return standards[i].descr; 97 } 98 EXPORT_SYMBOL(v4l2_norm_to_name); 99 100 /* Returns frame period for the given standard */ 101 void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod) 102 { 103 if (id & V4L2_STD_525_60) { 104 frameperiod->numerator = 1001; 105 frameperiod->denominator = 30000; 106 } else { 107 frameperiod->numerator = 1; 108 frameperiod->denominator = 25; 109 } 110 } 111 EXPORT_SYMBOL(v4l2_video_std_frame_period); 112 113 /* Fill in the fields of a v4l2_standard structure according to the 114 'id' and 'transmission' parameters. Returns negative on error. */ 115 int v4l2_video_std_construct(struct v4l2_standard *vs, 116 int id, const char *name) 117 { 118 vs->id = id; 119 v4l2_video_std_frame_period(id, &vs->frameperiod); 120 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625; 121 strscpy(vs->name, name, sizeof(vs->name)); 122 return 0; 123 } 124 EXPORT_SYMBOL(v4l2_video_std_construct); 125 126 /* Fill in the fields of a v4l2_standard structure according to the 127 * 'id' and 'vs->index' parameters. Returns negative on error. */ 128 int v4l_video_std_enumstd(struct v4l2_standard *vs, v4l2_std_id id) 129 { 130 v4l2_std_id curr_id = 0; 131 unsigned int index = vs->index, i, j = 0; 132 const char *descr = ""; 133 134 /* Return -ENODATA if the id for the current input 135 or output is 0, meaning that it doesn't support this API. */ 136 if (id == 0) 137 return -ENODATA; 138 139 /* Return norm array in a canonical way */ 140 for (i = 0; i <= index && id; i++) { 141 /* last std value in the standards array is 0, so this 142 while always ends there since (id & 0) == 0. */ 143 while ((id & standards[j].std) != standards[j].std) 144 j++; 145 curr_id = standards[j].std; 146 descr = standards[j].descr; 147 j++; 148 if (curr_id == 0) 149 break; 150 if (curr_id != V4L2_STD_PAL && 151 curr_id != V4L2_STD_SECAM && 152 curr_id != V4L2_STD_NTSC) 153 id &= ~curr_id; 154 } 155 if (i <= index) 156 return -EINVAL; 157 158 v4l2_video_std_construct(vs, curr_id, descr); 159 return 0; 160 } 161 162 /* ----------------------------------------------------------------- */ 163 /* some arrays for pretty-printing debug messages of enum types */ 164 165 const char *v4l2_field_names[] = { 166 [V4L2_FIELD_ANY] = "any", 167 [V4L2_FIELD_NONE] = "none", 168 [V4L2_FIELD_TOP] = "top", 169 [V4L2_FIELD_BOTTOM] = "bottom", 170 [V4L2_FIELD_INTERLACED] = "interlaced", 171 [V4L2_FIELD_SEQ_TB] = "seq-tb", 172 [V4L2_FIELD_SEQ_BT] = "seq-bt", 173 [V4L2_FIELD_ALTERNATE] = "alternate", 174 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb", 175 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt", 176 }; 177 EXPORT_SYMBOL(v4l2_field_names); 178 179 const char *v4l2_type_names[] = { 180 [0] = "0", 181 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap", 182 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay", 183 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out", 184 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap", 185 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out", 186 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap", 187 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out", 188 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay", 189 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane", 190 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane", 191 [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap", 192 [V4L2_BUF_TYPE_SDR_OUTPUT] = "sdr-out", 193 [V4L2_BUF_TYPE_META_CAPTURE] = "meta-cap", 194 [V4L2_BUF_TYPE_META_OUTPUT] = "meta-out", 195 }; 196 EXPORT_SYMBOL(v4l2_type_names); 197 198 static const char *v4l2_memory_names[] = { 199 [V4L2_MEMORY_MMAP] = "mmap", 200 [V4L2_MEMORY_USERPTR] = "userptr", 201 [V4L2_MEMORY_OVERLAY] = "overlay", 202 [V4L2_MEMORY_DMABUF] = "dmabuf", 203 }; 204 205 #define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown") 206 207 /* ------------------------------------------------------------------ */ 208 /* debug help functions */ 209 210 static void v4l_print_querycap(const void *arg, bool write_only) 211 { 212 const struct v4l2_capability *p = arg; 213 214 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, capabilities=0x%08x, device_caps=0x%08x\n", 215 (int)sizeof(p->driver), p->driver, 216 (int)sizeof(p->card), p->card, 217 (int)sizeof(p->bus_info), p->bus_info, 218 p->version, p->capabilities, p->device_caps); 219 } 220 221 static void v4l_print_enuminput(const void *arg, bool write_only) 222 { 223 const struct v4l2_input *p = arg; 224 225 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, std=0x%08Lx, status=0x%x, capabilities=0x%x\n", 226 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, 227 p->tuner, (unsigned long long)p->std, p->status, 228 p->capabilities); 229 } 230 231 static void v4l_print_enumoutput(const void *arg, bool write_only) 232 { 233 const struct v4l2_output *p = arg; 234 235 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, modulator=%u, std=0x%08Lx, capabilities=0x%x\n", 236 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset, 237 p->modulator, (unsigned long long)p->std, p->capabilities); 238 } 239 240 static void v4l_print_audio(const void *arg, bool write_only) 241 { 242 const struct v4l2_audio *p = arg; 243 244 if (write_only) 245 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode); 246 else 247 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", 248 p->index, (int)sizeof(p->name), p->name, 249 p->capability, p->mode); 250 } 251 252 static void v4l_print_audioout(const void *arg, bool write_only) 253 { 254 const struct v4l2_audioout *p = arg; 255 256 if (write_only) 257 pr_cont("index=%u\n", p->index); 258 else 259 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n", 260 p->index, (int)sizeof(p->name), p->name, 261 p->capability, p->mode); 262 } 263 264 static void v4l_print_fmtdesc(const void *arg, bool write_only) 265 { 266 const struct v4l2_fmtdesc *p = arg; 267 268 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%c%c%c%c, mbus_code=0x%04x, description='%.*s'\n", 269 p->index, prt_names(p->type, v4l2_type_names), 270 p->flags, (p->pixelformat & 0xff), 271 (p->pixelformat >> 8) & 0xff, 272 (p->pixelformat >> 16) & 0xff, 273 (p->pixelformat >> 24) & 0xff, 274 p->mbus_code, 275 (int)sizeof(p->description), p->description); 276 } 277 278 static void v4l_print_format(const void *arg, bool write_only) 279 { 280 const struct v4l2_format *p = arg; 281 const struct v4l2_pix_format *pix; 282 const struct v4l2_pix_format_mplane *mp; 283 const struct v4l2_vbi_format *vbi; 284 const struct v4l2_sliced_vbi_format *sliced; 285 const struct v4l2_window *win; 286 const struct v4l2_sdr_format *sdr; 287 const struct v4l2_meta_format *meta; 288 u32 planes; 289 unsigned i; 290 291 pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); 292 switch (p->type) { 293 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 294 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 295 pix = &p->fmt.pix; 296 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", 297 pix->width, pix->height, 298 (pix->pixelformat & 0xff), 299 (pix->pixelformat >> 8) & 0xff, 300 (pix->pixelformat >> 16) & 0xff, 301 (pix->pixelformat >> 24) & 0xff, 302 prt_names(pix->field, v4l2_field_names), 303 pix->bytesperline, pix->sizeimage, 304 pix->colorspace, pix->flags, pix->ycbcr_enc, 305 pix->quantization, pix->xfer_func); 306 break; 307 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 308 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 309 mp = &p->fmt.pix_mp; 310 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", 311 mp->width, mp->height, 312 (mp->pixelformat & 0xff), 313 (mp->pixelformat >> 8) & 0xff, 314 (mp->pixelformat >> 16) & 0xff, 315 (mp->pixelformat >> 24) & 0xff, 316 prt_names(mp->field, v4l2_field_names), 317 mp->colorspace, mp->num_planes, mp->flags, 318 mp->ycbcr_enc, mp->quantization, mp->xfer_func); 319 planes = min_t(u32, mp->num_planes, VIDEO_MAX_PLANES); 320 for (i = 0; i < planes; i++) 321 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i, 322 mp->plane_fmt[i].bytesperline, 323 mp->plane_fmt[i].sizeimage); 324 break; 325 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 326 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 327 win = &p->fmt.win; 328 /* Note: we can't print the clip list here since the clips 329 * pointer is a userspace pointer, not a kernelspace 330 * pointer. */ 331 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", 332 win->w.width, win->w.height, win->w.left, win->w.top, 333 prt_names(win->field, v4l2_field_names), 334 win->chromakey, win->clipcount, win->clips, 335 win->bitmap, win->global_alpha); 336 break; 337 case V4L2_BUF_TYPE_VBI_CAPTURE: 338 case V4L2_BUF_TYPE_VBI_OUTPUT: 339 vbi = &p->fmt.vbi; 340 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n", 341 vbi->sampling_rate, vbi->offset, 342 vbi->samples_per_line, 343 (vbi->sample_format & 0xff), 344 (vbi->sample_format >> 8) & 0xff, 345 (vbi->sample_format >> 16) & 0xff, 346 (vbi->sample_format >> 24) & 0xff, 347 vbi->start[0], vbi->start[1], 348 vbi->count[0], vbi->count[1]); 349 break; 350 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 351 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 352 sliced = &p->fmt.sliced; 353 pr_cont(", service_set=0x%08x, io_size=%d\n", 354 sliced->service_set, sliced->io_size); 355 for (i = 0; i < 24; i++) 356 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, 357 sliced->service_lines[0][i], 358 sliced->service_lines[1][i]); 359 break; 360 case V4L2_BUF_TYPE_SDR_CAPTURE: 361 case V4L2_BUF_TYPE_SDR_OUTPUT: 362 sdr = &p->fmt.sdr; 363 pr_cont(", pixelformat=%c%c%c%c\n", 364 (sdr->pixelformat >> 0) & 0xff, 365 (sdr->pixelformat >> 8) & 0xff, 366 (sdr->pixelformat >> 16) & 0xff, 367 (sdr->pixelformat >> 24) & 0xff); 368 break; 369 case V4L2_BUF_TYPE_META_CAPTURE: 370 case V4L2_BUF_TYPE_META_OUTPUT: 371 meta = &p->fmt.meta; 372 pr_cont(", dataformat=%c%c%c%c, buffersize=%u\n", 373 (meta->dataformat >> 0) & 0xff, 374 (meta->dataformat >> 8) & 0xff, 375 (meta->dataformat >> 16) & 0xff, 376 (meta->dataformat >> 24) & 0xff, 377 meta->buffersize); 378 break; 379 } 380 } 381 382 static void v4l_print_framebuffer(const void *arg, bool write_only) 383 { 384 const struct v4l2_framebuffer *p = arg; 385 386 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", 387 p->capability, p->flags, p->base, 388 p->fmt.width, p->fmt.height, 389 (p->fmt.pixelformat & 0xff), 390 (p->fmt.pixelformat >> 8) & 0xff, 391 (p->fmt.pixelformat >> 16) & 0xff, 392 (p->fmt.pixelformat >> 24) & 0xff, 393 p->fmt.bytesperline, p->fmt.sizeimage, 394 p->fmt.colorspace); 395 } 396 397 static void v4l_print_buftype(const void *arg, bool write_only) 398 { 399 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names)); 400 } 401 402 static void v4l_print_modulator(const void *arg, bool write_only) 403 { 404 const struct v4l2_modulator *p = arg; 405 406 if (write_only) 407 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans); 408 else 409 pr_cont("index=%u, name=%.*s, capability=0x%x, rangelow=%u, rangehigh=%u, txsubchans=0x%x\n", 410 p->index, (int)sizeof(p->name), p->name, p->capability, 411 p->rangelow, p->rangehigh, p->txsubchans); 412 } 413 414 static void v4l_print_tuner(const void *arg, bool write_only) 415 { 416 const struct v4l2_tuner *p = arg; 417 418 if (write_only) 419 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode); 420 else 421 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", 422 p->index, (int)sizeof(p->name), p->name, p->type, 423 p->capability, p->rangelow, 424 p->rangehigh, p->signal, p->afc, 425 p->rxsubchans, p->audmode); 426 } 427 428 static void v4l_print_frequency(const void *arg, bool write_only) 429 { 430 const struct v4l2_frequency *p = arg; 431 432 pr_cont("tuner=%u, type=%u, frequency=%u\n", 433 p->tuner, p->type, p->frequency); 434 } 435 436 static void v4l_print_standard(const void *arg, bool write_only) 437 { 438 const struct v4l2_standard *p = arg; 439 440 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, framelines=%u\n", 441 p->index, 442 (unsigned long long)p->id, (int)sizeof(p->name), p->name, 443 p->frameperiod.numerator, 444 p->frameperiod.denominator, 445 p->framelines); 446 } 447 448 static void v4l_print_std(const void *arg, bool write_only) 449 { 450 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg); 451 } 452 453 static void v4l_print_hw_freq_seek(const void *arg, bool write_only) 454 { 455 const struct v4l2_hw_freq_seek *p = arg; 456 457 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, rangelow=%u, rangehigh=%u\n", 458 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing, 459 p->rangelow, p->rangehigh); 460 } 461 462 static void v4l_print_requestbuffers(const void *arg, bool write_only) 463 { 464 const struct v4l2_requestbuffers *p = arg; 465 466 pr_cont("count=%d, type=%s, memory=%s\n", 467 p->count, 468 prt_names(p->type, v4l2_type_names), 469 prt_names(p->memory, v4l2_memory_names)); 470 } 471 472 static void v4l_print_buffer(const void *arg, bool write_only) 473 { 474 const struct v4l2_buffer *p = arg; 475 const struct v4l2_timecode *tc = &p->timecode; 476 const struct v4l2_plane *plane; 477 int i; 478 479 pr_cont("%02d:%02d:%02d.%06ld index=%d, type=%s, request_fd=%d, flags=0x%08x, field=%s, sequence=%d, memory=%s", 480 (int)p->timestamp.tv_sec / 3600, 481 ((int)p->timestamp.tv_sec / 60) % 60, 482 ((int)p->timestamp.tv_sec % 60), 483 (long)p->timestamp.tv_usec, 484 p->index, 485 prt_names(p->type, v4l2_type_names), p->request_fd, 486 p->flags, prt_names(p->field, v4l2_field_names), 487 p->sequence, prt_names(p->memory, v4l2_memory_names)); 488 489 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) { 490 pr_cont("\n"); 491 for (i = 0; i < p->length; ++i) { 492 plane = &p->m.planes[i]; 493 printk(KERN_DEBUG 494 "plane %d: bytesused=%d, data_offset=0x%08x, offset/userptr=0x%lx, length=%d\n", 495 i, plane->bytesused, plane->data_offset, 496 plane->m.userptr, plane->length); 497 } 498 } else { 499 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n", 500 p->bytesused, p->m.userptr, p->length); 501 } 502 503 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, flags=0x%08x, frames=%d, userbits=0x%08x\n", 504 tc->hours, tc->minutes, tc->seconds, 505 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits); 506 } 507 508 static void v4l_print_exportbuffer(const void *arg, bool write_only) 509 { 510 const struct v4l2_exportbuffer *p = arg; 511 512 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n", 513 p->fd, prt_names(p->type, v4l2_type_names), 514 p->index, p->plane, p->flags); 515 } 516 517 static void v4l_print_create_buffers(const void *arg, bool write_only) 518 { 519 const struct v4l2_create_buffers *p = arg; 520 521 pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, ", 522 p->index, p->count, prt_names(p->memory, v4l2_memory_names), 523 p->capabilities); 524 v4l_print_format(&p->format, write_only); 525 } 526 527 static void v4l_print_streamparm(const void *arg, bool write_only) 528 { 529 const struct v4l2_streamparm *p = arg; 530 531 pr_cont("type=%s", prt_names(p->type, v4l2_type_names)); 532 533 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 534 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) { 535 const struct v4l2_captureparm *c = &p->parm.capture; 536 537 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, extendedmode=%d, readbuffers=%d\n", 538 c->capability, c->capturemode, 539 c->timeperframe.numerator, c->timeperframe.denominator, 540 c->extendedmode, c->readbuffers); 541 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT || 542 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { 543 const struct v4l2_outputparm *c = &p->parm.output; 544 545 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, extendedmode=%d, writebuffers=%d\n", 546 c->capability, c->outputmode, 547 c->timeperframe.numerator, c->timeperframe.denominator, 548 c->extendedmode, c->writebuffers); 549 } else { 550 pr_cont("\n"); 551 } 552 } 553 554 static void v4l_print_queryctrl(const void *arg, bool write_only) 555 { 556 const struct v4l2_queryctrl *p = arg; 557 558 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, step=%d, default=%d, flags=0x%08x\n", 559 p->id, p->type, (int)sizeof(p->name), p->name, 560 p->minimum, p->maximum, 561 p->step, p->default_value, p->flags); 562 } 563 564 static void v4l_print_query_ext_ctrl(const void *arg, bool write_only) 565 { 566 const struct v4l2_query_ext_ctrl *p = arg; 567 568 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", 569 p->id, p->type, (int)sizeof(p->name), p->name, 570 p->minimum, p->maximum, 571 p->step, p->default_value, p->flags, 572 p->elem_size, p->elems, p->nr_of_dims, 573 p->dims[0], p->dims[1], p->dims[2], p->dims[3]); 574 } 575 576 static void v4l_print_querymenu(const void *arg, bool write_only) 577 { 578 const struct v4l2_querymenu *p = arg; 579 580 pr_cont("id=0x%x, index=%d\n", p->id, p->index); 581 } 582 583 static void v4l_print_control(const void *arg, bool write_only) 584 { 585 const struct v4l2_control *p = arg; 586 const char *name = v4l2_ctrl_get_name(p->id); 587 588 if (name) 589 pr_cont("name=%s, ", name); 590 pr_cont("id=0x%x, value=%d\n", p->id, p->value); 591 } 592 593 static void v4l_print_ext_controls(const void *arg, bool write_only) 594 { 595 const struct v4l2_ext_controls *p = arg; 596 int i; 597 598 pr_cont("which=0x%x, count=%d, error_idx=%d, request_fd=%d", 599 p->which, p->count, p->error_idx, p->request_fd); 600 for (i = 0; i < p->count; i++) { 601 unsigned int id = p->controls[i].id; 602 const char *name = v4l2_ctrl_get_name(id); 603 604 if (name) 605 pr_cont(", name=%s", name); 606 if (!p->controls[i].size) 607 pr_cont(", id/val=0x%x/0x%x", id, p->controls[i].value); 608 else 609 pr_cont(", id/size=0x%x/%u", id, p->controls[i].size); 610 } 611 pr_cont("\n"); 612 } 613 614 static void v4l_print_cropcap(const void *arg, bool write_only) 615 { 616 const struct v4l2_cropcap *p = arg; 617 618 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, defrect wxh=%dx%d, x,y=%d,%d, pixelaspect %d/%d\n", 619 prt_names(p->type, v4l2_type_names), 620 p->bounds.width, p->bounds.height, 621 p->bounds.left, p->bounds.top, 622 p->defrect.width, p->defrect.height, 623 p->defrect.left, p->defrect.top, 624 p->pixelaspect.numerator, p->pixelaspect.denominator); 625 } 626 627 static void v4l_print_crop(const void *arg, bool write_only) 628 { 629 const struct v4l2_crop *p = arg; 630 631 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n", 632 prt_names(p->type, v4l2_type_names), 633 p->c.width, p->c.height, 634 p->c.left, p->c.top); 635 } 636 637 static void v4l_print_selection(const void *arg, bool write_only) 638 { 639 const struct v4l2_selection *p = arg; 640 641 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n", 642 prt_names(p->type, v4l2_type_names), 643 p->target, p->flags, 644 p->r.width, p->r.height, p->r.left, p->r.top); 645 } 646 647 static void v4l_print_jpegcompression(const void *arg, bool write_only) 648 { 649 const struct v4l2_jpegcompression *p = arg; 650 651 pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n", 652 p->quality, p->APPn, p->APP_len, 653 p->COM_len, p->jpeg_markers); 654 } 655 656 static void v4l_print_enc_idx(const void *arg, bool write_only) 657 { 658 const struct v4l2_enc_idx *p = arg; 659 660 pr_cont("entries=%d, entries_cap=%d\n", 661 p->entries, p->entries_cap); 662 } 663 664 static void v4l_print_encoder_cmd(const void *arg, bool write_only) 665 { 666 const struct v4l2_encoder_cmd *p = arg; 667 668 pr_cont("cmd=%d, flags=0x%x\n", 669 p->cmd, p->flags); 670 } 671 672 static void v4l_print_decoder_cmd(const void *arg, bool write_only) 673 { 674 const struct v4l2_decoder_cmd *p = arg; 675 676 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags); 677 678 if (p->cmd == V4L2_DEC_CMD_START) 679 pr_info("speed=%d, format=%u\n", 680 p->start.speed, p->start.format); 681 else if (p->cmd == V4L2_DEC_CMD_STOP) 682 pr_info("pts=%llu\n", p->stop.pts); 683 } 684 685 static void v4l_print_dbg_chip_info(const void *arg, bool write_only) 686 { 687 const struct v4l2_dbg_chip_info *p = arg; 688 689 pr_cont("type=%u, ", p->match.type); 690 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 691 pr_cont("name=%.*s, ", 692 (int)sizeof(p->match.name), p->match.name); 693 else 694 pr_cont("addr=%u, ", p->match.addr); 695 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name); 696 } 697 698 static void v4l_print_dbg_register(const void *arg, bool write_only) 699 { 700 const struct v4l2_dbg_register *p = arg; 701 702 pr_cont("type=%u, ", p->match.type); 703 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER) 704 pr_cont("name=%.*s, ", 705 (int)sizeof(p->match.name), p->match.name); 706 else 707 pr_cont("addr=%u, ", p->match.addr); 708 pr_cont("reg=0x%llx, val=0x%llx\n", 709 p->reg, p->val); 710 } 711 712 static void v4l_print_dv_timings(const void *arg, bool write_only) 713 { 714 const struct v4l2_dv_timings *p = arg; 715 716 switch (p->type) { 717 case V4L2_DV_BT_656_1120: 718 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", 719 p->bt.interlaced, p->bt.pixelclock, 720 p->bt.width, p->bt.height, 721 p->bt.polarities, p->bt.hfrontporch, 722 p->bt.hsync, p->bt.hbackporch, 723 p->bt.vfrontporch, p->bt.vsync, 724 p->bt.vbackporch, p->bt.il_vfrontporch, 725 p->bt.il_vsync, p->bt.il_vbackporch, 726 p->bt.standards, p->bt.flags); 727 break; 728 default: 729 pr_cont("type=%d\n", p->type); 730 break; 731 } 732 } 733 734 static void v4l_print_enum_dv_timings(const void *arg, bool write_only) 735 { 736 const struct v4l2_enum_dv_timings *p = arg; 737 738 pr_cont("index=%u, ", p->index); 739 v4l_print_dv_timings(&p->timings, write_only); 740 } 741 742 static void v4l_print_dv_timings_cap(const void *arg, bool write_only) 743 { 744 const struct v4l2_dv_timings_cap *p = arg; 745 746 switch (p->type) { 747 case V4L2_DV_BT_656_1120: 748 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n", 749 p->bt.min_width, p->bt.max_width, 750 p->bt.min_height, p->bt.max_height, 751 p->bt.min_pixelclock, p->bt.max_pixelclock, 752 p->bt.standards, p->bt.capabilities); 753 break; 754 default: 755 pr_cont("type=%u\n", p->type); 756 break; 757 } 758 } 759 760 static void v4l_print_frmsizeenum(const void *arg, bool write_only) 761 { 762 const struct v4l2_frmsizeenum *p = arg; 763 764 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u", 765 p->index, 766 (p->pixel_format & 0xff), 767 (p->pixel_format >> 8) & 0xff, 768 (p->pixel_format >> 16) & 0xff, 769 (p->pixel_format >> 24) & 0xff, 770 p->type); 771 switch (p->type) { 772 case V4L2_FRMSIZE_TYPE_DISCRETE: 773 pr_cont(", wxh=%ux%u\n", 774 p->discrete.width, p->discrete.height); 775 break; 776 case V4L2_FRMSIZE_TYPE_STEPWISE: 777 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n", 778 p->stepwise.min_width, 779 p->stepwise.min_height, 780 p->stepwise.max_width, 781 p->stepwise.max_height, 782 p->stepwise.step_width, 783 p->stepwise.step_height); 784 break; 785 case V4L2_FRMSIZE_TYPE_CONTINUOUS: 786 default: 787 pr_cont("\n"); 788 break; 789 } 790 } 791 792 static void v4l_print_frmivalenum(const void *arg, bool write_only) 793 { 794 const struct v4l2_frmivalenum *p = arg; 795 796 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u", 797 p->index, 798 (p->pixel_format & 0xff), 799 (p->pixel_format >> 8) & 0xff, 800 (p->pixel_format >> 16) & 0xff, 801 (p->pixel_format >> 24) & 0xff, 802 p->width, p->height, p->type); 803 switch (p->type) { 804 case V4L2_FRMIVAL_TYPE_DISCRETE: 805 pr_cont(", fps=%d/%d\n", 806 p->discrete.numerator, 807 p->discrete.denominator); 808 break; 809 case V4L2_FRMIVAL_TYPE_STEPWISE: 810 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n", 811 p->stepwise.min.numerator, 812 p->stepwise.min.denominator, 813 p->stepwise.max.numerator, 814 p->stepwise.max.denominator, 815 p->stepwise.step.numerator, 816 p->stepwise.step.denominator); 817 break; 818 case V4L2_FRMIVAL_TYPE_CONTINUOUS: 819 default: 820 pr_cont("\n"); 821 break; 822 } 823 } 824 825 static void v4l_print_event(const void *arg, bool write_only) 826 { 827 const struct v4l2_event *p = arg; 828 const struct v4l2_event_ctrl *c; 829 830 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%llu.%9.9llu\n", 831 p->type, p->pending, p->sequence, p->id, 832 p->timestamp.tv_sec, p->timestamp.tv_nsec); 833 switch (p->type) { 834 case V4L2_EVENT_VSYNC: 835 printk(KERN_DEBUG "field=%s\n", 836 prt_names(p->u.vsync.field, v4l2_field_names)); 837 break; 838 case V4L2_EVENT_CTRL: 839 c = &p->u.ctrl; 840 printk(KERN_DEBUG "changes=0x%x, type=%u, ", 841 c->changes, c->type); 842 if (c->type == V4L2_CTRL_TYPE_INTEGER64) 843 pr_cont("value64=%lld, ", c->value64); 844 else 845 pr_cont("value=%d, ", c->value); 846 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n", 847 c->flags, c->minimum, c->maximum, 848 c->step, c->default_value); 849 break; 850 case V4L2_EVENT_FRAME_SYNC: 851 pr_cont("frame_sequence=%u\n", 852 p->u.frame_sync.frame_sequence); 853 break; 854 } 855 } 856 857 static void v4l_print_event_subscription(const void *arg, bool write_only) 858 { 859 const struct v4l2_event_subscription *p = arg; 860 861 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n", 862 p->type, p->id, p->flags); 863 } 864 865 static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only) 866 { 867 const struct v4l2_sliced_vbi_cap *p = arg; 868 int i; 869 870 pr_cont("type=%s, service_set=0x%08x\n", 871 prt_names(p->type, v4l2_type_names), p->service_set); 872 for (i = 0; i < 24; i++) 873 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i, 874 p->service_lines[0][i], 875 p->service_lines[1][i]); 876 } 877 878 static void v4l_print_freq_band(const void *arg, bool write_only) 879 { 880 const struct v4l2_frequency_band *p = arg; 881 882 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n", 883 p->tuner, p->type, p->index, 884 p->capability, p->rangelow, 885 p->rangehigh, p->modulation); 886 } 887 888 static void v4l_print_edid(const void *arg, bool write_only) 889 { 890 const struct v4l2_edid *p = arg; 891 892 pr_cont("pad=%u, start_block=%u, blocks=%u\n", 893 p->pad, p->start_block, p->blocks); 894 } 895 896 static void v4l_print_u32(const void *arg, bool write_only) 897 { 898 pr_cont("value=%u\n", *(const u32 *)arg); 899 } 900 901 static void v4l_print_newline(const void *arg, bool write_only) 902 { 903 pr_cont("\n"); 904 } 905 906 static void v4l_print_default(const void *arg, bool write_only) 907 { 908 pr_cont("driver-specific ioctl\n"); 909 } 910 911 static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) 912 { 913 __u32 i; 914 915 /* zero the reserved fields */ 916 c->reserved[0] = 0; 917 for (i = 0; i < c->count; i++) 918 c->controls[i].reserved2[0] = 0; 919 920 /* V4L2_CID_PRIVATE_BASE cannot be used as control class 921 when using extended controls. 922 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL 923 is it allowed for backwards compatibility. 924 */ 925 if (!allow_priv && c->which == V4L2_CID_PRIVATE_BASE) 926 return 0; 927 if (!c->which) 928 return 1; 929 /* Check that all controls are from the same control class. */ 930 for (i = 0; i < c->count; i++) { 931 if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) { 932 c->error_idx = i; 933 return 0; 934 } 935 } 936 return 1; 937 } 938 939 static int check_fmt(struct file *file, enum v4l2_buf_type type) 940 { 941 const u32 vid_caps = V4L2_CAP_VIDEO_CAPTURE | 942 V4L2_CAP_VIDEO_CAPTURE_MPLANE | 943 V4L2_CAP_VIDEO_OUTPUT | 944 V4L2_CAP_VIDEO_OUTPUT_MPLANE | 945 V4L2_CAP_VIDEO_M2M | V4L2_CAP_VIDEO_M2M_MPLANE; 946 const u32 meta_caps = V4L2_CAP_META_CAPTURE | 947 V4L2_CAP_META_OUTPUT; 948 struct video_device *vfd = video_devdata(file); 949 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 950 bool is_vid = vfd->vfl_type == VFL_TYPE_VIDEO && 951 (vfd->device_caps & vid_caps); 952 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI; 953 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; 954 bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; 955 bool is_meta = vfd->vfl_type == VFL_TYPE_VIDEO && 956 (vfd->device_caps & meta_caps); 957 bool is_rx = vfd->vfl_dir != VFL_DIR_TX; 958 bool is_tx = vfd->vfl_dir != VFL_DIR_RX; 959 960 if (ops == NULL) 961 return -EINVAL; 962 963 switch (type) { 964 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 965 if ((is_vid || is_tch) && is_rx && 966 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane)) 967 return 0; 968 break; 969 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 970 if ((is_vid || is_tch) && is_rx && ops->vidioc_g_fmt_vid_cap_mplane) 971 return 0; 972 break; 973 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 974 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay) 975 return 0; 976 break; 977 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 978 if (is_vid && is_tx && 979 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane)) 980 return 0; 981 break; 982 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 983 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane) 984 return 0; 985 break; 986 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 987 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay) 988 return 0; 989 break; 990 case V4L2_BUF_TYPE_VBI_CAPTURE: 991 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap) 992 return 0; 993 break; 994 case V4L2_BUF_TYPE_VBI_OUTPUT: 995 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out) 996 return 0; 997 break; 998 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 999 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap) 1000 return 0; 1001 break; 1002 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1003 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out) 1004 return 0; 1005 break; 1006 case V4L2_BUF_TYPE_SDR_CAPTURE: 1007 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap) 1008 return 0; 1009 break; 1010 case V4L2_BUF_TYPE_SDR_OUTPUT: 1011 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out) 1012 return 0; 1013 break; 1014 case V4L2_BUF_TYPE_META_CAPTURE: 1015 if (is_meta && is_rx && ops->vidioc_g_fmt_meta_cap) 1016 return 0; 1017 break; 1018 case V4L2_BUF_TYPE_META_OUTPUT: 1019 if (is_meta && is_tx && ops->vidioc_g_fmt_meta_out) 1020 return 0; 1021 break; 1022 default: 1023 break; 1024 } 1025 return -EINVAL; 1026 } 1027 1028 static void v4l_sanitize_format(struct v4l2_format *fmt) 1029 { 1030 unsigned int offset; 1031 1032 /* Make sure num_planes is not bogus */ 1033 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE || 1034 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 1035 fmt->fmt.pix_mp.num_planes = min_t(u32, fmt->fmt.pix_mp.num_planes, 1036 VIDEO_MAX_PLANES); 1037 1038 /* 1039 * The v4l2_pix_format structure has been extended with fields that were 1040 * not previously required to be set to zero by applications. The priv 1041 * field, when set to a magic value, indicates the the extended fields 1042 * are valid. Otherwise they will contain undefined values. To simplify 1043 * the API towards drivers zero the extended fields and set the priv 1044 * field to the magic value when the extended pixel format structure 1045 * isn't used by applications. 1046 */ 1047 1048 if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && 1049 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) 1050 return; 1051 1052 if (fmt->fmt.pix.priv == V4L2_PIX_FMT_PRIV_MAGIC) 1053 return; 1054 1055 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1056 1057 offset = offsetof(struct v4l2_pix_format, priv) 1058 + sizeof(fmt->fmt.pix.priv); 1059 memset(((void *)&fmt->fmt.pix) + offset, 0, 1060 sizeof(fmt->fmt.pix) - offset); 1061 } 1062 1063 static int v4l_querycap(const struct v4l2_ioctl_ops *ops, 1064 struct file *file, void *fh, void *arg) 1065 { 1066 struct v4l2_capability *cap = (struct v4l2_capability *)arg; 1067 struct video_device *vfd = video_devdata(file); 1068 int ret; 1069 1070 cap->version = LINUX_VERSION_CODE; 1071 cap->device_caps = vfd->device_caps; 1072 cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS; 1073 1074 ret = ops->vidioc_querycap(file, fh, cap); 1075 1076 /* 1077 * Drivers must not change device_caps, so check for this and 1078 * warn if this happened. 1079 */ 1080 WARN_ON(cap->device_caps != vfd->device_caps); 1081 /* 1082 * Check that capabilities is a superset of 1083 * vfd->device_caps | V4L2_CAP_DEVICE_CAPS 1084 */ 1085 WARN_ON((cap->capabilities & 1086 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)) != 1087 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)); 1088 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT; 1089 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT; 1090 1091 return ret; 1092 } 1093 1094 static int v4l_g_input(const struct v4l2_ioctl_ops *ops, 1095 struct file *file, void *fh, void *arg) 1096 { 1097 struct video_device *vfd = video_devdata(file); 1098 1099 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1100 *(int *)arg = 0; 1101 return 0; 1102 } 1103 1104 return ops->vidioc_g_input(file, fh, arg); 1105 } 1106 1107 static int v4l_g_output(const struct v4l2_ioctl_ops *ops, 1108 struct file *file, void *fh, void *arg) 1109 { 1110 struct video_device *vfd = video_devdata(file); 1111 1112 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1113 *(int *)arg = 0; 1114 return 0; 1115 } 1116 1117 return ops->vidioc_g_output(file, fh, arg); 1118 } 1119 1120 static int v4l_s_input(const struct v4l2_ioctl_ops *ops, 1121 struct file *file, void *fh, void *arg) 1122 { 1123 struct video_device *vfd = video_devdata(file); 1124 int ret; 1125 1126 ret = v4l_enable_media_source(vfd); 1127 if (ret) 1128 return ret; 1129 1130 if (vfd->device_caps & V4L2_CAP_IO_MC) 1131 return *(int *)arg ? -EINVAL : 0; 1132 1133 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg); 1134 } 1135 1136 static int v4l_s_output(const struct v4l2_ioctl_ops *ops, 1137 struct file *file, void *fh, void *arg) 1138 { 1139 struct video_device *vfd = video_devdata(file); 1140 1141 if (vfd->device_caps & V4L2_CAP_IO_MC) 1142 return *(int *)arg ? -EINVAL : 0; 1143 1144 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg); 1145 } 1146 1147 static int v4l_g_priority(const struct v4l2_ioctl_ops *ops, 1148 struct file *file, void *fh, void *arg) 1149 { 1150 struct video_device *vfd; 1151 u32 *p = arg; 1152 1153 vfd = video_devdata(file); 1154 *p = v4l2_prio_max(vfd->prio); 1155 return 0; 1156 } 1157 1158 static int v4l_s_priority(const struct v4l2_ioctl_ops *ops, 1159 struct file *file, void *fh, void *arg) 1160 { 1161 struct video_device *vfd; 1162 struct v4l2_fh *vfh; 1163 u32 *p = arg; 1164 1165 vfd = video_devdata(file); 1166 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 1167 return -ENOTTY; 1168 vfh = file->private_data; 1169 return v4l2_prio_change(vfd->prio, &vfh->prio, *p); 1170 } 1171 1172 static int v4l_enuminput(const struct v4l2_ioctl_ops *ops, 1173 struct file *file, void *fh, void *arg) 1174 { 1175 struct video_device *vfd = video_devdata(file); 1176 struct v4l2_input *p = arg; 1177 1178 /* 1179 * We set the flags for CAP_DV_TIMINGS & 1180 * CAP_STD here based on ioctl handler provided by the 1181 * driver. If the driver doesn't support these 1182 * for a specific input, it must override these flags. 1183 */ 1184 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1185 p->capabilities |= V4L2_IN_CAP_STD; 1186 1187 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1188 if (p->index) 1189 return -EINVAL; 1190 strscpy(p->name, vfd->name, sizeof(p->name)); 1191 p->type = V4L2_INPUT_TYPE_CAMERA; 1192 return 0; 1193 } 1194 1195 return ops->vidioc_enum_input(file, fh, p); 1196 } 1197 1198 static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops, 1199 struct file *file, void *fh, void *arg) 1200 { 1201 struct video_device *vfd = video_devdata(file); 1202 struct v4l2_output *p = arg; 1203 1204 /* 1205 * We set the flags for CAP_DV_TIMINGS & 1206 * CAP_STD here based on ioctl handler provided by the 1207 * driver. If the driver doesn't support these 1208 * for a specific output, it must override these flags. 1209 */ 1210 if (is_valid_ioctl(vfd, VIDIOC_S_STD)) 1211 p->capabilities |= V4L2_OUT_CAP_STD; 1212 1213 if (vfd->device_caps & V4L2_CAP_IO_MC) { 1214 if (p->index) 1215 return -EINVAL; 1216 strscpy(p->name, vfd->name, sizeof(p->name)); 1217 p->type = V4L2_OUTPUT_TYPE_ANALOG; 1218 return 0; 1219 } 1220 1221 return ops->vidioc_enum_output(file, fh, p); 1222 } 1223 1224 static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) 1225 { 1226 const unsigned sz = sizeof(fmt->description); 1227 const char *descr = NULL; 1228 u32 flags = 0; 1229 1230 /* 1231 * We depart from the normal coding style here since the descriptions 1232 * should be aligned so it is easy to see which descriptions will be 1233 * longer than 31 characters (the max length for a description). 1234 * And frankly, this is easier to read anyway. 1235 * 1236 * Note that gcc will use O(log N) comparisons to find the right case. 1237 */ 1238 switch (fmt->pixelformat) { 1239 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1240 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break; 1241 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break; 1242 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break; 1243 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break; 1244 case V4L2_PIX_FMT_RGBA444: descr = "16-bit RGBA 4-4-4-4"; break; 1245 case V4L2_PIX_FMT_RGBX444: descr = "16-bit RGBX 4-4-4-4"; break; 1246 case V4L2_PIX_FMT_ABGR444: descr = "16-bit ABGR 4-4-4-4"; break; 1247 case V4L2_PIX_FMT_XBGR444: descr = "16-bit XBGR 4-4-4-4"; break; 1248 case V4L2_PIX_FMT_BGRA444: descr = "16-bit BGRA 4-4-4-4"; break; 1249 case V4L2_PIX_FMT_BGRX444: descr = "16-bit BGRX 4-4-4-4"; break; 1250 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break; 1251 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break; 1252 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break; 1253 case V4L2_PIX_FMT_ABGR555: descr = "16-bit ABGR 1-5-5-5"; break; 1254 case V4L2_PIX_FMT_XBGR555: descr = "16-bit XBGR 1-5-5-5"; break; 1255 case V4L2_PIX_FMT_RGBA555: descr = "16-bit RGBA 5-5-5-1"; break; 1256 case V4L2_PIX_FMT_RGBX555: descr = "16-bit RGBX 5-5-5-1"; break; 1257 case V4L2_PIX_FMT_BGRA555: descr = "16-bit BGRA 5-5-5-1"; break; 1258 case V4L2_PIX_FMT_BGRX555: descr = "16-bit BGRX 5-5-5-1"; break; 1259 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break; 1260 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break; 1261 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break; 1262 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break; 1263 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break; 1264 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break; 1265 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break; 1266 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break; 1267 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break; 1268 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break; 1269 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break; 1270 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break; 1271 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break; 1272 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break; 1273 case V4L2_PIX_FMT_BGRA32: descr = "32-bit ABGR 8-8-8-8"; break; 1274 case V4L2_PIX_FMT_BGRX32: descr = "32-bit XBGR 8-8-8-8"; break; 1275 case V4L2_PIX_FMT_RGBA32: descr = "32-bit RGBA 8-8-8-8"; break; 1276 case V4L2_PIX_FMT_RGBX32: descr = "32-bit RGBX 8-8-8-8"; break; 1277 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break; 1278 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break; 1279 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break; 1280 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break; 1281 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break; 1282 case V4L2_PIX_FMT_Y14: descr = "14-bit Greyscale"; break; 1283 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break; 1284 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break; 1285 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break; 1286 case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break; 1287 case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break; 1288 case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break; 1289 case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break; 1290 case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break; 1291 case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break; 1292 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break; 1293 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break; 1294 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break; 1295 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break; 1296 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break; 1297 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break; 1298 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break; 1299 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break; 1300 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break; 1301 case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break; 1302 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break; 1303 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break; 1304 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break; 1305 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break; 1306 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break; 1307 case V4L2_PIX_FMT_YUV24: descr = "24-bit YUV 4:4:4 8-8-8"; break; 1308 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break; 1309 case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break; 1310 case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break; 1311 case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break; 1312 case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break; 1313 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break; 1314 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break; 1315 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break; 1316 case V4L2_PIX_FMT_HM12: descr = "YUV 4:2:0 (16x16 Macroblocks)"; break; 1317 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break; 1318 case V4L2_PIX_FMT_NV12: descr = "Y/CbCr 4:2:0"; break; 1319 case V4L2_PIX_FMT_NV21: descr = "Y/CrCb 4:2:0"; break; 1320 case V4L2_PIX_FMT_NV16: descr = "Y/CbCr 4:2:2"; break; 1321 case V4L2_PIX_FMT_NV61: descr = "Y/CrCb 4:2:2"; break; 1322 case V4L2_PIX_FMT_NV24: descr = "Y/CbCr 4:4:4"; break; 1323 case V4L2_PIX_FMT_NV42: descr = "Y/CrCb 4:4:4"; break; 1324 case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break; 1325 case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break; 1326 case V4L2_PIX_FMT_NV16M: descr = "Y/CbCr 4:2:2 (N-C)"; break; 1327 case V4L2_PIX_FMT_NV61M: descr = "Y/CrCb 4:2:2 (N-C)"; break; 1328 case V4L2_PIX_FMT_NV12MT: descr = "Y/CbCr 4:2:0 (64x32 MB, N-C)"; break; 1329 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/CbCr 4:2:0 (16x16 MB, N-C)"; break; 1330 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break; 1331 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break; 1332 case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break; 1333 case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break; 1334 case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break; 1335 case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break; 1336 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break; 1337 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break; 1338 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break; 1339 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break; 1340 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break; 1341 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break; 1342 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break; 1343 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break; 1344 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break; 1345 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break; 1346 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break; 1347 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break; 1348 case V4L2_PIX_FMT_IPU3_SBGGR10: descr = "10-bit bayer BGGR IPU3 Packed"; break; 1349 case V4L2_PIX_FMT_IPU3_SGBRG10: descr = "10-bit bayer GBRG IPU3 Packed"; break; 1350 case V4L2_PIX_FMT_IPU3_SGRBG10: descr = "10-bit bayer GRBG IPU3 Packed"; break; 1351 case V4L2_PIX_FMT_IPU3_SRGGB10: descr = "10-bit bayer RGGB IPU3 Packed"; break; 1352 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break; 1353 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break; 1354 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break; 1355 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break; 1356 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break; 1357 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break; 1358 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break; 1359 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break; 1360 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break; 1361 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break; 1362 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break; 1363 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break; 1364 case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break; 1365 case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break; 1366 case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break; 1367 case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break; 1368 case V4L2_PIX_FMT_SBGGR14: descr = "14-bit Bayer BGBG/GRGR"; break; 1369 case V4L2_PIX_FMT_SGBRG14: descr = "14-bit Bayer GBGB/RGRG"; break; 1370 case V4L2_PIX_FMT_SGRBG14: descr = "14-bit Bayer GRGR/BGBG"; break; 1371 case V4L2_PIX_FMT_SRGGB14: descr = "14-bit Bayer RGRG/GBGB"; break; 1372 case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break; 1373 case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break; 1374 case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break; 1375 case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break; 1376 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break; 1377 case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break; 1378 case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break; 1379 case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break; 1380 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break; 1381 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break; 1382 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break; 1383 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break; 1384 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break; 1385 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break; 1386 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break; 1387 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break; 1388 case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break; 1389 case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break; 1390 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break; 1391 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break; 1392 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break; 1393 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break; 1394 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break; 1395 case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break; 1396 case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break; 1397 case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break; 1398 case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit Signed Deltas"; break; 1399 case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit Signed Deltas"; break; 1400 case V4L2_TCH_FMT_TU16: descr = "16-bit Unsigned Touch Data"; break; 1401 case V4L2_TCH_FMT_TU08: descr = "8-bit Unsigned Touch Data"; break; 1402 case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break; 1403 case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break; 1404 case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break; 1405 case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break; 1406 case V4L2_META_FMT_VIVID: descr = "Vivid Metadata"; break; 1407 case V4L2_META_FMT_RK_ISP1_PARAMS: descr = "Rockchip ISP1 3A Parameters"; break; 1408 case V4L2_META_FMT_RK_ISP1_STAT_3A: descr = "Rockchip ISP1 3A Statistics"; break; 1409 1410 default: 1411 /* Compressed formats */ 1412 flags = V4L2_FMT_FLAG_COMPRESSED; 1413 switch (fmt->pixelformat) { 1414 /* Max description length mask: descr = "0123456789012345678901234567890" */ 1415 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break; 1416 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break; 1417 case V4L2_PIX_FMT_DV: descr = "1394"; break; 1418 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break; 1419 case V4L2_PIX_FMT_H264: descr = "H.264"; break; 1420 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break; 1421 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break; 1422 case V4L2_PIX_FMT_H264_SLICE: descr = "H.264 Parsed Slice Data"; break; 1423 case V4L2_PIX_FMT_H263: descr = "H.263"; break; 1424 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break; 1425 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break; 1426 case V4L2_PIX_FMT_MPEG2_SLICE: descr = "MPEG-2 Parsed Slice Data"; break; 1427 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 Part 2 ES"; break; 1428 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break; 1429 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break; 1430 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break; 1431 case V4L2_PIX_FMT_VP8: descr = "VP8"; break; 1432 case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break; 1433 case V4L2_PIX_FMT_VP9: descr = "VP9"; break; 1434 case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */ 1435 case V4L2_PIX_FMT_HEVC_SLICE: descr = "HEVC Parsed Slice Data"; break; 1436 case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */ 1437 case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */ 1438 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break; 1439 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break; 1440 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break; 1441 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break; 1442 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break; 1443 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break; 1444 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break; 1445 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break; 1446 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break; 1447 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break; 1448 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break; 1449 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break; 1450 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break; 1451 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break; 1452 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break; 1453 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break; 1454 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break; 1455 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break; 1456 case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break; 1457 case V4L2_PIX_FMT_SUNXI_TILED_NV12: descr = "Sunxi Tiled NV12 Format"; break; 1458 default: 1459 if (fmt->description[0]) 1460 return; 1461 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat); 1462 flags = 0; 1463 snprintf(fmt->description, sz, "%c%c%c%c%s", 1464 (char)(fmt->pixelformat & 0x7f), 1465 (char)((fmt->pixelformat >> 8) & 0x7f), 1466 (char)((fmt->pixelformat >> 16) & 0x7f), 1467 (char)((fmt->pixelformat >> 24) & 0x7f), 1468 (fmt->pixelformat & (1UL << 31)) ? "-BE" : ""); 1469 break; 1470 } 1471 } 1472 1473 if (descr) 1474 WARN_ON(strscpy(fmt->description, descr, sz) < 0); 1475 fmt->flags |= flags; 1476 } 1477 1478 static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops, 1479 struct file *file, void *fh, void *arg) 1480 { 1481 struct video_device *vdev = video_devdata(file); 1482 struct v4l2_fmtdesc *p = arg; 1483 int ret = check_fmt(file, p->type); 1484 u32 mbus_code; 1485 u32 cap_mask; 1486 1487 if (ret) 1488 return ret; 1489 ret = -EINVAL; 1490 1491 if (!(vdev->device_caps & V4L2_CAP_IO_MC)) 1492 p->mbus_code = 0; 1493 1494 mbus_code = p->mbus_code; 1495 CLEAR_AFTER_FIELD(p, type); 1496 p->mbus_code = mbus_code; 1497 1498 switch (p->type) { 1499 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1500 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1501 cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE | 1502 V4L2_CAP_VIDEO_M2M_MPLANE; 1503 if (!!(vdev->device_caps & cap_mask) != 1504 (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)) 1505 break; 1506 1507 if (unlikely(!ops->vidioc_enum_fmt_vid_cap)) 1508 break; 1509 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg); 1510 break; 1511 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1512 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay)) 1513 break; 1514 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg); 1515 break; 1516 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1517 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1518 cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE | 1519 V4L2_CAP_VIDEO_M2M_MPLANE; 1520 if (!!(vdev->device_caps & cap_mask) != 1521 (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)) 1522 break; 1523 1524 if (unlikely(!ops->vidioc_enum_fmt_vid_out)) 1525 break; 1526 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg); 1527 break; 1528 case V4L2_BUF_TYPE_SDR_CAPTURE: 1529 if (unlikely(!ops->vidioc_enum_fmt_sdr_cap)) 1530 break; 1531 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg); 1532 break; 1533 case V4L2_BUF_TYPE_SDR_OUTPUT: 1534 if (unlikely(!ops->vidioc_enum_fmt_sdr_out)) 1535 break; 1536 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg); 1537 break; 1538 case V4L2_BUF_TYPE_META_CAPTURE: 1539 if (unlikely(!ops->vidioc_enum_fmt_meta_cap)) 1540 break; 1541 ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg); 1542 break; 1543 case V4L2_BUF_TYPE_META_OUTPUT: 1544 if (unlikely(!ops->vidioc_enum_fmt_meta_out)) 1545 break; 1546 ret = ops->vidioc_enum_fmt_meta_out(file, fh, arg); 1547 break; 1548 } 1549 if (ret == 0) 1550 v4l_fill_fmtdesc(p); 1551 return ret; 1552 } 1553 1554 static void v4l_pix_format_touch(struct v4l2_pix_format *p) 1555 { 1556 /* 1557 * The v4l2_pix_format structure contains fields that make no sense for 1558 * touch. Set them to default values in this case. 1559 */ 1560 1561 p->field = V4L2_FIELD_NONE; 1562 p->colorspace = V4L2_COLORSPACE_RAW; 1563 p->flags = 0; 1564 p->ycbcr_enc = 0; 1565 p->quantization = 0; 1566 p->xfer_func = 0; 1567 } 1568 1569 static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, 1570 struct file *file, void *fh, void *arg) 1571 { 1572 struct v4l2_format *p = arg; 1573 struct video_device *vfd = video_devdata(file); 1574 int ret = check_fmt(file, p->type); 1575 1576 if (ret) 1577 return ret; 1578 1579 /* 1580 * fmt can't be cleared for these overlay types due to the 'clips' 1581 * 'clipcount' and 'bitmap' pointers in struct v4l2_window. 1582 * Those are provided by the user. So handle these two overlay types 1583 * first, and then just do a simple memset for the other types. 1584 */ 1585 switch (p->type) { 1586 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1587 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: { 1588 struct v4l2_clip *clips = p->fmt.win.clips; 1589 u32 clipcount = p->fmt.win.clipcount; 1590 void __user *bitmap = p->fmt.win.bitmap; 1591 1592 memset(&p->fmt, 0, sizeof(p->fmt)); 1593 p->fmt.win.clips = clips; 1594 p->fmt.win.clipcount = clipcount; 1595 p->fmt.win.bitmap = bitmap; 1596 break; 1597 } 1598 default: 1599 memset(&p->fmt, 0, sizeof(p->fmt)); 1600 break; 1601 } 1602 1603 switch (p->type) { 1604 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1605 if (unlikely(!ops->vidioc_g_fmt_vid_cap)) 1606 break; 1607 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1608 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg); 1609 /* just in case the driver zeroed it again */ 1610 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1611 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1612 v4l_pix_format_touch(&p->fmt.pix); 1613 return ret; 1614 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1615 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg); 1616 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1617 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg); 1618 case V4L2_BUF_TYPE_VBI_CAPTURE: 1619 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg); 1620 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1621 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg); 1622 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1623 if (unlikely(!ops->vidioc_g_fmt_vid_out)) 1624 break; 1625 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1626 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg); 1627 /* just in case the driver zeroed it again */ 1628 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1629 return ret; 1630 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1631 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg); 1632 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1633 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg); 1634 case V4L2_BUF_TYPE_VBI_OUTPUT: 1635 return ops->vidioc_g_fmt_vbi_out(file, fh, arg); 1636 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1637 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg); 1638 case V4L2_BUF_TYPE_SDR_CAPTURE: 1639 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg); 1640 case V4L2_BUF_TYPE_SDR_OUTPUT: 1641 return ops->vidioc_g_fmt_sdr_out(file, fh, arg); 1642 case V4L2_BUF_TYPE_META_CAPTURE: 1643 return ops->vidioc_g_fmt_meta_cap(file, fh, arg); 1644 case V4L2_BUF_TYPE_META_OUTPUT: 1645 return ops->vidioc_g_fmt_meta_out(file, fh, arg); 1646 } 1647 return -EINVAL; 1648 } 1649 1650 static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, 1651 struct file *file, void *fh, void *arg) 1652 { 1653 struct v4l2_format *p = arg; 1654 struct video_device *vfd = video_devdata(file); 1655 int ret = check_fmt(file, p->type); 1656 unsigned int i; 1657 1658 if (ret) 1659 return ret; 1660 1661 ret = v4l_enable_media_source(vfd); 1662 if (ret) 1663 return ret; 1664 v4l_sanitize_format(p); 1665 1666 switch (p->type) { 1667 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1668 if (unlikely(!ops->vidioc_s_fmt_vid_cap)) 1669 break; 1670 CLEAR_AFTER_FIELD(p, fmt.pix); 1671 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg); 1672 /* just in case the driver zeroed it again */ 1673 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1674 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1675 v4l_pix_format_touch(&p->fmt.pix); 1676 return ret; 1677 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1678 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane)) 1679 break; 1680 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1681 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1682 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1683 bytesperline); 1684 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg); 1685 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1686 if (unlikely(!ops->vidioc_s_fmt_vid_overlay)) 1687 break; 1688 CLEAR_AFTER_FIELD(p, fmt.win); 1689 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg); 1690 case V4L2_BUF_TYPE_VBI_CAPTURE: 1691 if (unlikely(!ops->vidioc_s_fmt_vbi_cap)) 1692 break; 1693 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1694 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg); 1695 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1696 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap)) 1697 break; 1698 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1699 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg); 1700 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1701 if (unlikely(!ops->vidioc_s_fmt_vid_out)) 1702 break; 1703 CLEAR_AFTER_FIELD(p, fmt.pix); 1704 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg); 1705 /* just in case the driver zeroed it again */ 1706 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1707 return ret; 1708 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1709 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane)) 1710 break; 1711 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1712 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1713 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1714 bytesperline); 1715 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg); 1716 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1717 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay)) 1718 break; 1719 CLEAR_AFTER_FIELD(p, fmt.win); 1720 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg); 1721 case V4L2_BUF_TYPE_VBI_OUTPUT: 1722 if (unlikely(!ops->vidioc_s_fmt_vbi_out)) 1723 break; 1724 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1725 return ops->vidioc_s_fmt_vbi_out(file, fh, arg); 1726 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1727 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out)) 1728 break; 1729 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1730 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg); 1731 case V4L2_BUF_TYPE_SDR_CAPTURE: 1732 if (unlikely(!ops->vidioc_s_fmt_sdr_cap)) 1733 break; 1734 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1735 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg); 1736 case V4L2_BUF_TYPE_SDR_OUTPUT: 1737 if (unlikely(!ops->vidioc_s_fmt_sdr_out)) 1738 break; 1739 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1740 return ops->vidioc_s_fmt_sdr_out(file, fh, arg); 1741 case V4L2_BUF_TYPE_META_CAPTURE: 1742 if (unlikely(!ops->vidioc_s_fmt_meta_cap)) 1743 break; 1744 CLEAR_AFTER_FIELD(p, fmt.meta); 1745 return ops->vidioc_s_fmt_meta_cap(file, fh, arg); 1746 case V4L2_BUF_TYPE_META_OUTPUT: 1747 if (unlikely(!ops->vidioc_s_fmt_meta_out)) 1748 break; 1749 CLEAR_AFTER_FIELD(p, fmt.meta); 1750 return ops->vidioc_s_fmt_meta_out(file, fh, arg); 1751 } 1752 return -EINVAL; 1753 } 1754 1755 static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, 1756 struct file *file, void *fh, void *arg) 1757 { 1758 struct v4l2_format *p = arg; 1759 struct video_device *vfd = video_devdata(file); 1760 int ret = check_fmt(file, p->type); 1761 unsigned int i; 1762 1763 if (ret) 1764 return ret; 1765 1766 v4l_sanitize_format(p); 1767 1768 switch (p->type) { 1769 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 1770 if (unlikely(!ops->vidioc_try_fmt_vid_cap)) 1771 break; 1772 CLEAR_AFTER_FIELD(p, fmt.pix); 1773 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg); 1774 /* just in case the driver zeroed it again */ 1775 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1776 if (vfd->vfl_type == VFL_TYPE_TOUCH) 1777 v4l_pix_format_touch(&p->fmt.pix); 1778 return ret; 1779 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1780 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane)) 1781 break; 1782 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1783 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1784 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1785 bytesperline); 1786 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg); 1787 case V4L2_BUF_TYPE_VIDEO_OVERLAY: 1788 if (unlikely(!ops->vidioc_try_fmt_vid_overlay)) 1789 break; 1790 CLEAR_AFTER_FIELD(p, fmt.win); 1791 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg); 1792 case V4L2_BUF_TYPE_VBI_CAPTURE: 1793 if (unlikely(!ops->vidioc_try_fmt_vbi_cap)) 1794 break; 1795 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1796 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg); 1797 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: 1798 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap)) 1799 break; 1800 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1801 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg); 1802 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1803 if (unlikely(!ops->vidioc_try_fmt_vid_out)) 1804 break; 1805 CLEAR_AFTER_FIELD(p, fmt.pix); 1806 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg); 1807 /* just in case the driver zeroed it again */ 1808 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 1809 return ret; 1810 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1811 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane)) 1812 break; 1813 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); 1814 for (i = 0; i < p->fmt.pix_mp.num_planes; i++) 1815 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i], 1816 bytesperline); 1817 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg); 1818 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: 1819 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay)) 1820 break; 1821 CLEAR_AFTER_FIELD(p, fmt.win); 1822 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg); 1823 case V4L2_BUF_TYPE_VBI_OUTPUT: 1824 if (unlikely(!ops->vidioc_try_fmt_vbi_out)) 1825 break; 1826 CLEAR_AFTER_FIELD(p, fmt.vbi.flags); 1827 return ops->vidioc_try_fmt_vbi_out(file, fh, arg); 1828 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: 1829 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out)) 1830 break; 1831 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size); 1832 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg); 1833 case V4L2_BUF_TYPE_SDR_CAPTURE: 1834 if (unlikely(!ops->vidioc_try_fmt_sdr_cap)) 1835 break; 1836 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1837 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg); 1838 case V4L2_BUF_TYPE_SDR_OUTPUT: 1839 if (unlikely(!ops->vidioc_try_fmt_sdr_out)) 1840 break; 1841 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize); 1842 return ops->vidioc_try_fmt_sdr_out(file, fh, arg); 1843 case V4L2_BUF_TYPE_META_CAPTURE: 1844 if (unlikely(!ops->vidioc_try_fmt_meta_cap)) 1845 break; 1846 CLEAR_AFTER_FIELD(p, fmt.meta); 1847 return ops->vidioc_try_fmt_meta_cap(file, fh, arg); 1848 case V4L2_BUF_TYPE_META_OUTPUT: 1849 if (unlikely(!ops->vidioc_try_fmt_meta_out)) 1850 break; 1851 CLEAR_AFTER_FIELD(p, fmt.meta); 1852 return ops->vidioc_try_fmt_meta_out(file, fh, arg); 1853 } 1854 return -EINVAL; 1855 } 1856 1857 static int v4l_streamon(const struct v4l2_ioctl_ops *ops, 1858 struct file *file, void *fh, void *arg) 1859 { 1860 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg); 1861 } 1862 1863 static int v4l_streamoff(const struct v4l2_ioctl_ops *ops, 1864 struct file *file, void *fh, void *arg) 1865 { 1866 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg); 1867 } 1868 1869 static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops, 1870 struct file *file, void *fh, void *arg) 1871 { 1872 struct video_device *vfd = video_devdata(file); 1873 struct v4l2_tuner *p = arg; 1874 int err; 1875 1876 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1877 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1878 err = ops->vidioc_g_tuner(file, fh, p); 1879 if (!err) 1880 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1881 return err; 1882 } 1883 1884 static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops, 1885 struct file *file, void *fh, void *arg) 1886 { 1887 struct video_device *vfd = video_devdata(file); 1888 struct v4l2_tuner *p = arg; 1889 int ret; 1890 1891 ret = v4l_enable_media_source(vfd); 1892 if (ret) 1893 return ret; 1894 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1895 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1896 return ops->vidioc_s_tuner(file, fh, p); 1897 } 1898 1899 static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops, 1900 struct file *file, void *fh, void *arg) 1901 { 1902 struct video_device *vfd = video_devdata(file); 1903 struct v4l2_modulator *p = arg; 1904 int err; 1905 1906 if (vfd->vfl_type == VFL_TYPE_RADIO) 1907 p->type = V4L2_TUNER_RADIO; 1908 1909 err = ops->vidioc_g_modulator(file, fh, p); 1910 if (!err) 1911 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS; 1912 return err; 1913 } 1914 1915 static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops, 1916 struct file *file, void *fh, void *arg) 1917 { 1918 struct video_device *vfd = video_devdata(file); 1919 struct v4l2_modulator *p = arg; 1920 1921 if (vfd->vfl_type == VFL_TYPE_RADIO) 1922 p->type = V4L2_TUNER_RADIO; 1923 1924 return ops->vidioc_s_modulator(file, fh, p); 1925 } 1926 1927 static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops, 1928 struct file *file, void *fh, void *arg) 1929 { 1930 struct video_device *vfd = video_devdata(file); 1931 struct v4l2_frequency *p = arg; 1932 1933 if (vfd->vfl_type == VFL_TYPE_SDR) 1934 p->type = V4L2_TUNER_SDR; 1935 else 1936 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1937 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1938 return ops->vidioc_g_frequency(file, fh, p); 1939 } 1940 1941 static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops, 1942 struct file *file, void *fh, void *arg) 1943 { 1944 struct video_device *vfd = video_devdata(file); 1945 const struct v4l2_frequency *p = arg; 1946 enum v4l2_tuner_type type; 1947 int ret; 1948 1949 ret = v4l_enable_media_source(vfd); 1950 if (ret) 1951 return ret; 1952 if (vfd->vfl_type == VFL_TYPE_SDR) { 1953 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 1954 return -EINVAL; 1955 } else { 1956 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 1957 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 1958 if (type != p->type) 1959 return -EINVAL; 1960 } 1961 return ops->vidioc_s_frequency(file, fh, p); 1962 } 1963 1964 static int v4l_enumstd(const struct v4l2_ioctl_ops *ops, 1965 struct file *file, void *fh, void *arg) 1966 { 1967 struct video_device *vfd = video_devdata(file); 1968 struct v4l2_standard *p = arg; 1969 1970 return v4l_video_std_enumstd(p, vfd->tvnorms); 1971 } 1972 1973 static int v4l_s_std(const struct v4l2_ioctl_ops *ops, 1974 struct file *file, void *fh, void *arg) 1975 { 1976 struct video_device *vfd = video_devdata(file); 1977 v4l2_std_id id = *(v4l2_std_id *)arg, norm; 1978 int ret; 1979 1980 ret = v4l_enable_media_source(vfd); 1981 if (ret) 1982 return ret; 1983 norm = id & vfd->tvnorms; 1984 if (vfd->tvnorms && !norm) /* Check if std is supported */ 1985 return -EINVAL; 1986 1987 /* Calls the specific handler */ 1988 return ops->vidioc_s_std(file, fh, norm); 1989 } 1990 1991 static int v4l_querystd(const struct v4l2_ioctl_ops *ops, 1992 struct file *file, void *fh, void *arg) 1993 { 1994 struct video_device *vfd = video_devdata(file); 1995 v4l2_std_id *p = arg; 1996 int ret; 1997 1998 ret = v4l_enable_media_source(vfd); 1999 if (ret) 2000 return ret; 2001 /* 2002 * If no signal is detected, then the driver should return 2003 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with 2004 * any standards that do not apply removed. 2005 * 2006 * This means that tuners, audio and video decoders can join 2007 * their efforts to improve the standards detection. 2008 */ 2009 *p = vfd->tvnorms; 2010 return ops->vidioc_querystd(file, fh, arg); 2011 } 2012 2013 static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops, 2014 struct file *file, void *fh, void *arg) 2015 { 2016 struct video_device *vfd = video_devdata(file); 2017 struct v4l2_hw_freq_seek *p = arg; 2018 enum v4l2_tuner_type type; 2019 int ret; 2020 2021 ret = v4l_enable_media_source(vfd); 2022 if (ret) 2023 return ret; 2024 /* s_hw_freq_seek is not supported for SDR for now */ 2025 if (vfd->vfl_type == VFL_TYPE_SDR) 2026 return -EINVAL; 2027 2028 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2029 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2030 if (p->type != type) 2031 return -EINVAL; 2032 return ops->vidioc_s_hw_freq_seek(file, fh, p); 2033 } 2034 2035 static int v4l_overlay(const struct v4l2_ioctl_ops *ops, 2036 struct file *file, void *fh, void *arg) 2037 { 2038 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg); 2039 } 2040 2041 static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops, 2042 struct file *file, void *fh, void *arg) 2043 { 2044 struct v4l2_requestbuffers *p = arg; 2045 int ret = check_fmt(file, p->type); 2046 2047 if (ret) 2048 return ret; 2049 2050 CLEAR_AFTER_FIELD(p, capabilities); 2051 2052 return ops->vidioc_reqbufs(file, fh, p); 2053 } 2054 2055 static int v4l_querybuf(const struct v4l2_ioctl_ops *ops, 2056 struct file *file, void *fh, void *arg) 2057 { 2058 struct v4l2_buffer *p = arg; 2059 int ret = check_fmt(file, p->type); 2060 2061 return ret ? ret : ops->vidioc_querybuf(file, fh, p); 2062 } 2063 2064 static int v4l_qbuf(const struct v4l2_ioctl_ops *ops, 2065 struct file *file, void *fh, void *arg) 2066 { 2067 struct v4l2_buffer *p = arg; 2068 int ret = check_fmt(file, p->type); 2069 2070 return ret ? ret : ops->vidioc_qbuf(file, fh, p); 2071 } 2072 2073 static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops, 2074 struct file *file, void *fh, void *arg) 2075 { 2076 struct v4l2_buffer *p = arg; 2077 int ret = check_fmt(file, p->type); 2078 2079 return ret ? ret : ops->vidioc_dqbuf(file, fh, p); 2080 } 2081 2082 static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops, 2083 struct file *file, void *fh, void *arg) 2084 { 2085 struct v4l2_create_buffers *create = arg; 2086 int ret = check_fmt(file, create->format.type); 2087 2088 if (ret) 2089 return ret; 2090 2091 CLEAR_AFTER_FIELD(create, capabilities); 2092 2093 v4l_sanitize_format(&create->format); 2094 2095 ret = ops->vidioc_create_bufs(file, fh, create); 2096 2097 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE || 2098 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT) 2099 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; 2100 2101 return ret; 2102 } 2103 2104 static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops, 2105 struct file *file, void *fh, void *arg) 2106 { 2107 struct v4l2_buffer *b = arg; 2108 int ret = check_fmt(file, b->type); 2109 2110 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b); 2111 } 2112 2113 static int v4l_g_parm(const struct v4l2_ioctl_ops *ops, 2114 struct file *file, void *fh, void *arg) 2115 { 2116 struct v4l2_streamparm *p = arg; 2117 v4l2_std_id std; 2118 int ret = check_fmt(file, p->type); 2119 2120 if (ret) 2121 return ret; 2122 if (ops->vidioc_g_parm) 2123 return ops->vidioc_g_parm(file, fh, p); 2124 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && 2125 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2126 return -EINVAL; 2127 p->parm.capture.readbuffers = 2; 2128 ret = ops->vidioc_g_std(file, fh, &std); 2129 if (ret == 0) 2130 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe); 2131 return ret; 2132 } 2133 2134 static int v4l_s_parm(const struct v4l2_ioctl_ops *ops, 2135 struct file *file, void *fh, void *arg) 2136 { 2137 struct v4l2_streamparm *p = arg; 2138 int ret = check_fmt(file, p->type); 2139 2140 if (ret) 2141 return ret; 2142 2143 /* Note: extendedmode is never used in drivers */ 2144 if (V4L2_TYPE_IS_OUTPUT(p->type)) { 2145 memset(p->parm.output.reserved, 0, 2146 sizeof(p->parm.output.reserved)); 2147 p->parm.output.extendedmode = 0; 2148 p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY; 2149 } else { 2150 memset(p->parm.capture.reserved, 0, 2151 sizeof(p->parm.capture.reserved)); 2152 p->parm.capture.extendedmode = 0; 2153 p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY; 2154 } 2155 return ops->vidioc_s_parm(file, fh, p); 2156 } 2157 2158 static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops, 2159 struct file *file, void *fh, void *arg) 2160 { 2161 struct video_device *vfd = video_devdata(file); 2162 struct v4l2_queryctrl *p = arg; 2163 struct v4l2_fh *vfh = 2164 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2165 2166 if (vfh && vfh->ctrl_handler) 2167 return v4l2_queryctrl(vfh->ctrl_handler, p); 2168 if (vfd->ctrl_handler) 2169 return v4l2_queryctrl(vfd->ctrl_handler, p); 2170 if (ops->vidioc_queryctrl) 2171 return ops->vidioc_queryctrl(file, fh, p); 2172 return -ENOTTY; 2173 } 2174 2175 static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops, 2176 struct file *file, void *fh, void *arg) 2177 { 2178 struct video_device *vfd = video_devdata(file); 2179 struct v4l2_query_ext_ctrl *p = arg; 2180 struct v4l2_fh *vfh = 2181 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2182 2183 if (vfh && vfh->ctrl_handler) 2184 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p); 2185 if (vfd->ctrl_handler) 2186 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p); 2187 if (ops->vidioc_query_ext_ctrl) 2188 return ops->vidioc_query_ext_ctrl(file, fh, p); 2189 return -ENOTTY; 2190 } 2191 2192 static int v4l_querymenu(const struct v4l2_ioctl_ops *ops, 2193 struct file *file, void *fh, void *arg) 2194 { 2195 struct video_device *vfd = video_devdata(file); 2196 struct v4l2_querymenu *p = arg; 2197 struct v4l2_fh *vfh = 2198 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2199 2200 if (vfh && vfh->ctrl_handler) 2201 return v4l2_querymenu(vfh->ctrl_handler, p); 2202 if (vfd->ctrl_handler) 2203 return v4l2_querymenu(vfd->ctrl_handler, p); 2204 if (ops->vidioc_querymenu) 2205 return ops->vidioc_querymenu(file, fh, p); 2206 return -ENOTTY; 2207 } 2208 2209 static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops, 2210 struct file *file, void *fh, void *arg) 2211 { 2212 struct video_device *vfd = video_devdata(file); 2213 struct v4l2_control *p = arg; 2214 struct v4l2_fh *vfh = 2215 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2216 struct v4l2_ext_controls ctrls; 2217 struct v4l2_ext_control ctrl; 2218 2219 if (vfh && vfh->ctrl_handler) 2220 return v4l2_g_ctrl(vfh->ctrl_handler, p); 2221 if (vfd->ctrl_handler) 2222 return v4l2_g_ctrl(vfd->ctrl_handler, p); 2223 if (ops->vidioc_g_ctrl) 2224 return ops->vidioc_g_ctrl(file, fh, p); 2225 if (ops->vidioc_g_ext_ctrls == NULL) 2226 return -ENOTTY; 2227 2228 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2229 ctrls.count = 1; 2230 ctrls.controls = &ctrl; 2231 ctrl.id = p->id; 2232 ctrl.value = p->value; 2233 if (check_ext_ctrls(&ctrls, 1)) { 2234 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls); 2235 2236 if (ret == 0) 2237 p->value = ctrl.value; 2238 return ret; 2239 } 2240 return -EINVAL; 2241 } 2242 2243 static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, 2244 struct file *file, void *fh, void *arg) 2245 { 2246 struct video_device *vfd = video_devdata(file); 2247 struct v4l2_control *p = arg; 2248 struct v4l2_fh *vfh = 2249 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2250 struct v4l2_ext_controls ctrls; 2251 struct v4l2_ext_control ctrl; 2252 2253 if (vfh && vfh->ctrl_handler) 2254 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p); 2255 if (vfd->ctrl_handler) 2256 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p); 2257 if (ops->vidioc_s_ctrl) 2258 return ops->vidioc_s_ctrl(file, fh, p); 2259 if (ops->vidioc_s_ext_ctrls == NULL) 2260 return -ENOTTY; 2261 2262 ctrls.which = V4L2_CTRL_ID2WHICH(p->id); 2263 ctrls.count = 1; 2264 ctrls.controls = &ctrl; 2265 ctrl.id = p->id; 2266 ctrl.value = p->value; 2267 if (check_ext_ctrls(&ctrls, 1)) 2268 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls); 2269 return -EINVAL; 2270 } 2271 2272 static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2273 struct file *file, void *fh, void *arg) 2274 { 2275 struct video_device *vfd = video_devdata(file); 2276 struct v4l2_ext_controls *p = arg; 2277 struct v4l2_fh *vfh = 2278 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2279 2280 p->error_idx = p->count; 2281 if (vfh && vfh->ctrl_handler) 2282 return v4l2_g_ext_ctrls(vfh->ctrl_handler, 2283 vfd, vfd->v4l2_dev->mdev, p); 2284 if (vfd->ctrl_handler) 2285 return v4l2_g_ext_ctrls(vfd->ctrl_handler, 2286 vfd, vfd->v4l2_dev->mdev, p); 2287 if (ops->vidioc_g_ext_ctrls == NULL) 2288 return -ENOTTY; 2289 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) : 2290 -EINVAL; 2291 } 2292 2293 static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2294 struct file *file, void *fh, void *arg) 2295 { 2296 struct video_device *vfd = video_devdata(file); 2297 struct v4l2_ext_controls *p = arg; 2298 struct v4l2_fh *vfh = 2299 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2300 2301 p->error_idx = p->count; 2302 if (vfh && vfh->ctrl_handler) 2303 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, 2304 vfd, vfd->v4l2_dev->mdev, p); 2305 if (vfd->ctrl_handler) 2306 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, 2307 vfd, vfd->v4l2_dev->mdev, p); 2308 if (ops->vidioc_s_ext_ctrls == NULL) 2309 return -ENOTTY; 2310 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) : 2311 -EINVAL; 2312 } 2313 2314 static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops, 2315 struct file *file, void *fh, void *arg) 2316 { 2317 struct video_device *vfd = video_devdata(file); 2318 struct v4l2_ext_controls *p = arg; 2319 struct v4l2_fh *vfh = 2320 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; 2321 2322 p->error_idx = p->count; 2323 if (vfh && vfh->ctrl_handler) 2324 return v4l2_try_ext_ctrls(vfh->ctrl_handler, 2325 vfd, vfd->v4l2_dev->mdev, p); 2326 if (vfd->ctrl_handler) 2327 return v4l2_try_ext_ctrls(vfd->ctrl_handler, 2328 vfd, vfd->v4l2_dev->mdev, p); 2329 if (ops->vidioc_try_ext_ctrls == NULL) 2330 return -ENOTTY; 2331 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) : 2332 -EINVAL; 2333 } 2334 2335 /* 2336 * The selection API specified originally that the _MPLANE buffer types 2337 * shouldn't be used. The reasons for this are lost in the mists of time 2338 * (or just really crappy memories). Regardless, this is really annoying 2339 * for userspace. So to keep things simple we map _MPLANE buffer types 2340 * to their 'regular' counterparts before calling the driver. And we 2341 * restore it afterwards. This way applications can use either buffer 2342 * type and drivers don't need to check for both. 2343 */ 2344 static int v4l_g_selection(const struct v4l2_ioctl_ops *ops, 2345 struct file *file, void *fh, void *arg) 2346 { 2347 struct v4l2_selection *p = arg; 2348 u32 old_type = p->type; 2349 int ret; 2350 2351 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2352 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2353 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2354 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2355 ret = ops->vidioc_g_selection(file, fh, p); 2356 p->type = old_type; 2357 return ret; 2358 } 2359 2360 static int v4l_s_selection(const struct v4l2_ioctl_ops *ops, 2361 struct file *file, void *fh, void *arg) 2362 { 2363 struct v4l2_selection *p = arg; 2364 u32 old_type = p->type; 2365 int ret; 2366 2367 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2368 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2369 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2370 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2371 ret = ops->vidioc_s_selection(file, fh, p); 2372 p->type = old_type; 2373 return ret; 2374 } 2375 2376 static int v4l_g_crop(const struct v4l2_ioctl_ops *ops, 2377 struct file *file, void *fh, void *arg) 2378 { 2379 struct video_device *vfd = video_devdata(file); 2380 struct v4l2_crop *p = arg; 2381 struct v4l2_selection s = { 2382 .type = p->type, 2383 }; 2384 int ret; 2385 2386 /* simulate capture crop using selection api */ 2387 2388 /* crop means compose for output devices */ 2389 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2390 s.target = V4L2_SEL_TGT_COMPOSE; 2391 else 2392 s.target = V4L2_SEL_TGT_CROP; 2393 2394 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2395 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2396 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2397 2398 ret = v4l_g_selection(ops, file, fh, &s); 2399 2400 /* copying results to old structure on success */ 2401 if (!ret) 2402 p->c = s.r; 2403 return ret; 2404 } 2405 2406 static int v4l_s_crop(const struct v4l2_ioctl_ops *ops, 2407 struct file *file, void *fh, void *arg) 2408 { 2409 struct video_device *vfd = video_devdata(file); 2410 struct v4l2_crop *p = arg; 2411 struct v4l2_selection s = { 2412 .type = p->type, 2413 .r = p->c, 2414 }; 2415 2416 /* simulate capture crop using selection api */ 2417 2418 /* crop means compose for output devices */ 2419 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2420 s.target = V4L2_SEL_TGT_COMPOSE; 2421 else 2422 s.target = V4L2_SEL_TGT_CROP; 2423 2424 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2425 s.target = s.target == V4L2_SEL_TGT_COMPOSE ? 2426 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE; 2427 2428 return v4l_s_selection(ops, file, fh, &s); 2429 } 2430 2431 static int v4l_cropcap(const struct v4l2_ioctl_ops *ops, 2432 struct file *file, void *fh, void *arg) 2433 { 2434 struct video_device *vfd = video_devdata(file); 2435 struct v4l2_cropcap *p = arg; 2436 struct v4l2_selection s = { .type = p->type }; 2437 int ret = 0; 2438 2439 /* setting trivial pixelaspect */ 2440 p->pixelaspect.numerator = 1; 2441 p->pixelaspect.denominator = 1; 2442 2443 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) 2444 s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2445 else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) 2446 s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 2447 2448 /* 2449 * The determine_valid_ioctls() call already should ensure 2450 * that this can never happen, but just in case... 2451 */ 2452 if (WARN_ON(!ops->vidioc_g_selection)) 2453 return -ENOTTY; 2454 2455 if (ops->vidioc_g_pixelaspect) 2456 ret = ops->vidioc_g_pixelaspect(file, fh, s.type, 2457 &p->pixelaspect); 2458 2459 /* 2460 * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the 2461 * square pixel aspect ratio in that case. 2462 */ 2463 if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD) 2464 return ret; 2465 2466 /* Use g_selection() to fill in the bounds and defrect rectangles */ 2467 2468 /* obtaining bounds */ 2469 if (V4L2_TYPE_IS_OUTPUT(p->type)) 2470 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS; 2471 else 2472 s.target = V4L2_SEL_TGT_CROP_BOUNDS; 2473 2474 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags)) 2475 s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ? 2476 V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS; 2477 2478 ret = v4l_g_selection(ops, file, fh, &s); 2479 if (ret) 2480 return ret; 2481 p->bounds = s.r; 2482 2483 /* obtaining defrect */ 2484 if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS) 2485 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT; 2486 else 2487 s.target = V4L2_SEL_TGT_CROP_DEFAULT; 2488 2489 ret = v4l_g_selection(ops, file, fh, &s); 2490 if (ret) 2491 return ret; 2492 p->defrect = s.r; 2493 2494 return 0; 2495 } 2496 2497 static int v4l_log_status(const struct v4l2_ioctl_ops *ops, 2498 struct file *file, void *fh, void *arg) 2499 { 2500 struct video_device *vfd = video_devdata(file); 2501 int ret; 2502 2503 if (vfd->v4l2_dev) 2504 pr_info("%s: ================= START STATUS =================\n", 2505 vfd->v4l2_dev->name); 2506 ret = ops->vidioc_log_status(file, fh); 2507 if (vfd->v4l2_dev) 2508 pr_info("%s: ================== END STATUS ==================\n", 2509 vfd->v4l2_dev->name); 2510 return ret; 2511 } 2512 2513 static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops, 2514 struct file *file, void *fh, void *arg) 2515 { 2516 #ifdef CONFIG_VIDEO_ADV_DEBUG 2517 struct v4l2_dbg_register *p = arg; 2518 struct video_device *vfd = video_devdata(file); 2519 struct v4l2_subdev *sd; 2520 int idx = 0; 2521 2522 if (!capable(CAP_SYS_ADMIN)) 2523 return -EPERM; 2524 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2525 if (vfd->v4l2_dev == NULL) 2526 return -EINVAL; 2527 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2528 if (p->match.addr == idx++) 2529 return v4l2_subdev_call(sd, core, g_register, p); 2530 return -EINVAL; 2531 } 2532 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2533 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2534 return ops->vidioc_g_register(file, fh, p); 2535 return -EINVAL; 2536 #else 2537 return -ENOTTY; 2538 #endif 2539 } 2540 2541 static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops, 2542 struct file *file, void *fh, void *arg) 2543 { 2544 #ifdef CONFIG_VIDEO_ADV_DEBUG 2545 const struct v4l2_dbg_register *p = arg; 2546 struct video_device *vfd = video_devdata(file); 2547 struct v4l2_subdev *sd; 2548 int idx = 0; 2549 2550 if (!capable(CAP_SYS_ADMIN)) 2551 return -EPERM; 2552 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) { 2553 if (vfd->v4l2_dev == NULL) 2554 return -EINVAL; 2555 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) 2556 if (p->match.addr == idx++) 2557 return v4l2_subdev_call(sd, core, s_register, p); 2558 return -EINVAL; 2559 } 2560 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE && 2561 (ops->vidioc_g_chip_info || p->match.addr == 0)) 2562 return ops->vidioc_s_register(file, fh, p); 2563 return -EINVAL; 2564 #else 2565 return -ENOTTY; 2566 #endif 2567 } 2568 2569 static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops, 2570 struct file *file, void *fh, void *arg) 2571 { 2572 #ifdef CONFIG_VIDEO_ADV_DEBUG 2573 struct video_device *vfd = video_devdata(file); 2574 struct v4l2_dbg_chip_info *p = arg; 2575 struct v4l2_subdev *sd; 2576 int idx = 0; 2577 2578 switch (p->match.type) { 2579 case V4L2_CHIP_MATCH_BRIDGE: 2580 if (ops->vidioc_s_register) 2581 p->flags |= V4L2_CHIP_FL_WRITABLE; 2582 if (ops->vidioc_g_register) 2583 p->flags |= V4L2_CHIP_FL_READABLE; 2584 strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name)); 2585 if (ops->vidioc_g_chip_info) 2586 return ops->vidioc_g_chip_info(file, fh, arg); 2587 if (p->match.addr) 2588 return -EINVAL; 2589 return 0; 2590 2591 case V4L2_CHIP_MATCH_SUBDEV: 2592 if (vfd->v4l2_dev == NULL) 2593 break; 2594 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) { 2595 if (p->match.addr != idx++) 2596 continue; 2597 if (sd->ops->core && sd->ops->core->s_register) 2598 p->flags |= V4L2_CHIP_FL_WRITABLE; 2599 if (sd->ops->core && sd->ops->core->g_register) 2600 p->flags |= V4L2_CHIP_FL_READABLE; 2601 strscpy(p->name, sd->name, sizeof(p->name)); 2602 return 0; 2603 } 2604 break; 2605 } 2606 return -EINVAL; 2607 #else 2608 return -ENOTTY; 2609 #endif 2610 } 2611 2612 static int v4l_dqevent(const struct v4l2_ioctl_ops *ops, 2613 struct file *file, void *fh, void *arg) 2614 { 2615 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK); 2616 } 2617 2618 static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops, 2619 struct file *file, void *fh, void *arg) 2620 { 2621 return ops->vidioc_subscribe_event(fh, arg); 2622 } 2623 2624 static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops, 2625 struct file *file, void *fh, void *arg) 2626 { 2627 return ops->vidioc_unsubscribe_event(fh, arg); 2628 } 2629 2630 static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops, 2631 struct file *file, void *fh, void *arg) 2632 { 2633 struct v4l2_sliced_vbi_cap *p = arg; 2634 int ret = check_fmt(file, p->type); 2635 2636 if (ret) 2637 return ret; 2638 2639 /* Clear up to type, everything after type is zeroed already */ 2640 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type)); 2641 2642 return ops->vidioc_g_sliced_vbi_cap(file, fh, p); 2643 } 2644 2645 static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops, 2646 struct file *file, void *fh, void *arg) 2647 { 2648 struct video_device *vfd = video_devdata(file); 2649 struct v4l2_frequency_band *p = arg; 2650 enum v4l2_tuner_type type; 2651 int err; 2652 2653 if (vfd->vfl_type == VFL_TYPE_SDR) { 2654 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF) 2655 return -EINVAL; 2656 type = p->type; 2657 } else { 2658 type = (vfd->vfl_type == VFL_TYPE_RADIO) ? 2659 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; 2660 if (type != p->type) 2661 return -EINVAL; 2662 } 2663 if (ops->vidioc_enum_freq_bands) { 2664 err = ops->vidioc_enum_freq_bands(file, fh, p); 2665 if (err != -ENOTTY) 2666 return err; 2667 } 2668 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) { 2669 struct v4l2_tuner t = { 2670 .index = p->tuner, 2671 .type = type, 2672 }; 2673 2674 if (p->index) 2675 return -EINVAL; 2676 err = ops->vidioc_g_tuner(file, fh, &t); 2677 if (err) 2678 return err; 2679 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2680 p->rangelow = t.rangelow; 2681 p->rangehigh = t.rangehigh; 2682 p->modulation = (type == V4L2_TUNER_RADIO) ? 2683 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2684 return 0; 2685 } 2686 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) { 2687 struct v4l2_modulator m = { 2688 .index = p->tuner, 2689 }; 2690 2691 if (type != V4L2_TUNER_RADIO) 2692 return -EINVAL; 2693 if (p->index) 2694 return -EINVAL; 2695 err = ops->vidioc_g_modulator(file, fh, &m); 2696 if (err) 2697 return err; 2698 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS; 2699 p->rangelow = m.rangelow; 2700 p->rangehigh = m.rangehigh; 2701 p->modulation = (type == V4L2_TUNER_RADIO) ? 2702 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB; 2703 return 0; 2704 } 2705 return -ENOTTY; 2706 } 2707 2708 struct v4l2_ioctl_info { 2709 unsigned int ioctl; 2710 u32 flags; 2711 const char * const name; 2712 int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file, 2713 void *fh, void *p); 2714 void (*debug)(const void *arg, bool write_only); 2715 }; 2716 2717 /* This control needs a priority check */ 2718 #define INFO_FL_PRIO (1 << 0) 2719 /* This control can be valid if the filehandle passes a control handler. */ 2720 #define INFO_FL_CTRL (1 << 1) 2721 /* Queuing ioctl */ 2722 #define INFO_FL_QUEUE (1 << 2) 2723 /* Always copy back result, even on error */ 2724 #define INFO_FL_ALWAYS_COPY (1 << 3) 2725 /* Zero struct from after the field to the end */ 2726 #define INFO_FL_CLEAR(v4l2_struct, field) \ 2727 ((offsetof(struct v4l2_struct, field) + \ 2728 sizeof_field(struct v4l2_struct, field)) << 16) 2729 #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16) 2730 2731 #define DEFINE_V4L_STUB_FUNC(_vidioc) \ 2732 static int v4l_stub_ ## _vidioc( \ 2733 const struct v4l2_ioctl_ops *ops, \ 2734 struct file *file, void *fh, void *p) \ 2735 { \ 2736 return ops->vidioc_ ## _vidioc(file, fh, p); \ 2737 } 2738 2739 #define IOCTL_INFO(_ioctl, _func, _debug, _flags) \ 2740 [_IOC_NR(_ioctl)] = { \ 2741 .ioctl = _ioctl, \ 2742 .flags = _flags, \ 2743 .name = #_ioctl, \ 2744 .func = _func, \ 2745 .debug = _debug, \ 2746 } 2747 2748 DEFINE_V4L_STUB_FUNC(g_fbuf) 2749 DEFINE_V4L_STUB_FUNC(s_fbuf) 2750 DEFINE_V4L_STUB_FUNC(expbuf) 2751 DEFINE_V4L_STUB_FUNC(g_std) 2752 DEFINE_V4L_STUB_FUNC(g_audio) 2753 DEFINE_V4L_STUB_FUNC(s_audio) 2754 DEFINE_V4L_STUB_FUNC(g_edid) 2755 DEFINE_V4L_STUB_FUNC(s_edid) 2756 DEFINE_V4L_STUB_FUNC(g_audout) 2757 DEFINE_V4L_STUB_FUNC(s_audout) 2758 DEFINE_V4L_STUB_FUNC(g_jpegcomp) 2759 DEFINE_V4L_STUB_FUNC(s_jpegcomp) 2760 DEFINE_V4L_STUB_FUNC(enumaudio) 2761 DEFINE_V4L_STUB_FUNC(enumaudout) 2762 DEFINE_V4L_STUB_FUNC(enum_framesizes) 2763 DEFINE_V4L_STUB_FUNC(enum_frameintervals) 2764 DEFINE_V4L_STUB_FUNC(g_enc_index) 2765 DEFINE_V4L_STUB_FUNC(encoder_cmd) 2766 DEFINE_V4L_STUB_FUNC(try_encoder_cmd) 2767 DEFINE_V4L_STUB_FUNC(decoder_cmd) 2768 DEFINE_V4L_STUB_FUNC(try_decoder_cmd) 2769 DEFINE_V4L_STUB_FUNC(s_dv_timings) 2770 DEFINE_V4L_STUB_FUNC(g_dv_timings) 2771 DEFINE_V4L_STUB_FUNC(enum_dv_timings) 2772 DEFINE_V4L_STUB_FUNC(query_dv_timings) 2773 DEFINE_V4L_STUB_FUNC(dv_timings_cap) 2774 2775 static const struct v4l2_ioctl_info v4l2_ioctls[] = { 2776 IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0), 2777 IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, 0), 2778 IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0), 2779 IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO), 2780 IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2781 IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)), 2782 IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0), 2783 IOCTL_INFO(VIDIOC_S_FBUF, v4l_stub_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO), 2784 IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO), 2785 IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE), 2786 IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)), 2787 IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE), 2788 IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2789 IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE), 2790 IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)), 2791 IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO), 2792 IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0), 2793 IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO), 2794 IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)), 2795 IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)), 2796 IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)), 2797 IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL), 2798 IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)), 2799 IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO), 2800 IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0), 2801 IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO), 2802 IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)), 2803 IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)), 2804 IOCTL_INFO(VIDIOC_G_INPUT, v4l_g_input, v4l_print_u32, 0), 2805 IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO), 2806 IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY), 2807 IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY), 2808 IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_g_output, v4l_print_u32, 0), 2809 IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO), 2810 IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)), 2811 IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0), 2812 IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO), 2813 IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)), 2814 IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO), 2815 IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)), 2816 IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO), 2817 IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)), 2818 IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)), 2819 IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO), 2820 IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)), 2821 IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)), 2822 IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0), 2823 IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO), 2824 IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0), 2825 IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0), 2826 IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)), 2827 IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)), 2828 IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0), 2829 IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO), 2830 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)), 2831 IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0), 2832 IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL), 2833 IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL), 2834 IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL), 2835 IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)), 2836 IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)), 2837 IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0), 2838 IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2839 IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)), 2840 IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO), 2841 IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0), 2842 IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0), 2843 IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0), 2844 IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO), 2845 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)), 2846 IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0), 2847 IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0), 2848 IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0), 2849 IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0), 2850 IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE), 2851 IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE), 2852 IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)), 2853 IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY), 2854 IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)), 2855 IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0), 2856 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)), 2857 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)), 2858 }; 2859 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) 2860 2861 static bool v4l2_is_known_ioctl(unsigned int cmd) 2862 { 2863 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2864 return false; 2865 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd; 2866 } 2867 2868 static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, 2869 struct v4l2_fh *vfh, unsigned int cmd, 2870 void *arg) 2871 { 2872 if (_IOC_NR(cmd) >= V4L2_IOCTLS) 2873 return vdev->lock; 2874 if (vfh && vfh->m2m_ctx && 2875 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) { 2876 if (vfh->m2m_ctx->q_lock) 2877 return vfh->m2m_ctx->q_lock; 2878 } 2879 if (vdev->queue && vdev->queue->lock && 2880 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) 2881 return vdev->queue->lock; 2882 return vdev->lock; 2883 } 2884 2885 /* Common ioctl debug function. This function can be used by 2886 external ioctl messages as well as internal V4L ioctl */ 2887 void v4l_printk_ioctl(const char *prefix, unsigned int cmd) 2888 { 2889 const char *dir, *type; 2890 2891 if (prefix) 2892 printk(KERN_DEBUG "%s: ", prefix); 2893 2894 switch (_IOC_TYPE(cmd)) { 2895 case 'd': 2896 type = "v4l2_int"; 2897 break; 2898 case 'V': 2899 if (_IOC_NR(cmd) >= V4L2_IOCTLS) { 2900 type = "v4l2"; 2901 break; 2902 } 2903 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name); 2904 return; 2905 default: 2906 type = "unknown"; 2907 break; 2908 } 2909 2910 switch (_IOC_DIR(cmd)) { 2911 case _IOC_NONE: dir = "--"; break; 2912 case _IOC_READ: dir = "r-"; break; 2913 case _IOC_WRITE: dir = "-w"; break; 2914 case _IOC_READ | _IOC_WRITE: dir = "rw"; break; 2915 default: dir = "*ERR*"; break; 2916 } 2917 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)", 2918 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd); 2919 } 2920 EXPORT_SYMBOL(v4l_printk_ioctl); 2921 2922 static long __video_do_ioctl(struct file *file, 2923 unsigned int cmd, void *arg) 2924 { 2925 struct video_device *vfd = video_devdata(file); 2926 struct mutex *req_queue_lock = NULL; 2927 struct mutex *lock; /* ioctl serialization mutex */ 2928 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; 2929 bool write_only = false; 2930 struct v4l2_ioctl_info default_info; 2931 const struct v4l2_ioctl_info *info; 2932 void *fh = file->private_data; 2933 struct v4l2_fh *vfh = NULL; 2934 int dev_debug = vfd->dev_debug; 2935 long ret = -ENOTTY; 2936 2937 if (ops == NULL) { 2938 pr_warn("%s: has no ioctl_ops.\n", 2939 video_device_node_name(vfd)); 2940 return ret; 2941 } 2942 2943 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) 2944 vfh = file->private_data; 2945 2946 /* 2947 * We need to serialize streamon/off with queueing new requests. 2948 * These ioctls may trigger the cancellation of a streaming 2949 * operation, and that should not be mixed with queueing a new 2950 * request at the same time. 2951 */ 2952 if (v4l2_device_supports_requests(vfd->v4l2_dev) && 2953 (cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF)) { 2954 req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex; 2955 2956 if (mutex_lock_interruptible(req_queue_lock)) 2957 return -ERESTARTSYS; 2958 } 2959 2960 lock = v4l2_ioctl_get_lock(vfd, vfh, cmd, arg); 2961 2962 if (lock && mutex_lock_interruptible(lock)) { 2963 if (req_queue_lock) 2964 mutex_unlock(req_queue_lock); 2965 return -ERESTARTSYS; 2966 } 2967 2968 if (!video_is_registered(vfd)) { 2969 ret = -ENODEV; 2970 goto unlock; 2971 } 2972 2973 if (v4l2_is_known_ioctl(cmd)) { 2974 info = &v4l2_ioctls[_IOC_NR(cmd)]; 2975 2976 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) && 2977 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler)) 2978 goto done; 2979 2980 if (vfh && (info->flags & INFO_FL_PRIO)) { 2981 ret = v4l2_prio_check(vfd->prio, vfh->prio); 2982 if (ret) 2983 goto done; 2984 } 2985 } else { 2986 default_info.ioctl = cmd; 2987 default_info.flags = 0; 2988 default_info.debug = v4l_print_default; 2989 info = &default_info; 2990 } 2991 2992 write_only = _IOC_DIR(cmd) == _IOC_WRITE; 2993 if (info != &default_info) { 2994 ret = info->func(ops, file, fh, arg); 2995 } else if (!ops->vidioc_default) { 2996 ret = -ENOTTY; 2997 } else { 2998 ret = ops->vidioc_default(file, fh, 2999 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0, 3000 cmd, arg); 3001 } 3002 3003 done: 3004 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) { 3005 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) && 3006 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF)) 3007 goto unlock; 3008 3009 v4l_printk_ioctl(video_device_node_name(vfd), cmd); 3010 if (ret < 0) 3011 pr_cont(": error %ld", ret); 3012 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG)) 3013 pr_cont("\n"); 3014 else if (_IOC_DIR(cmd) == _IOC_NONE) 3015 info->debug(arg, write_only); 3016 else { 3017 pr_cont(": "); 3018 info->debug(arg, write_only); 3019 } 3020 } 3021 3022 unlock: 3023 if (lock) 3024 mutex_unlock(lock); 3025 if (req_queue_lock) 3026 mutex_unlock(req_queue_lock); 3027 return ret; 3028 } 3029 3030 static int check_array_args(unsigned int cmd, void *parg, size_t *array_size, 3031 void __user **user_ptr, void ***kernel_ptr) 3032 { 3033 int ret = 0; 3034 3035 switch (cmd) { 3036 case VIDIOC_PREPARE_BUF: 3037 case VIDIOC_QUERYBUF: 3038 case VIDIOC_QBUF: 3039 case VIDIOC_DQBUF: { 3040 struct v4l2_buffer *buf = parg; 3041 3042 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) { 3043 if (buf->length > VIDEO_MAX_PLANES) { 3044 ret = -EINVAL; 3045 break; 3046 } 3047 *user_ptr = (void __user *)buf->m.planes; 3048 *kernel_ptr = (void **)&buf->m.planes; 3049 *array_size = sizeof(struct v4l2_plane) * buf->length; 3050 ret = 1; 3051 } 3052 break; 3053 } 3054 3055 case VIDIOC_G_EDID: 3056 case VIDIOC_S_EDID: { 3057 struct v4l2_edid *edid = parg; 3058 3059 if (edid->blocks) { 3060 if (edid->blocks > 256) { 3061 ret = -EINVAL; 3062 break; 3063 } 3064 *user_ptr = (void __user *)edid->edid; 3065 *kernel_ptr = (void **)&edid->edid; 3066 *array_size = edid->blocks * 128; 3067 ret = 1; 3068 } 3069 break; 3070 } 3071 3072 case VIDIOC_S_EXT_CTRLS: 3073 case VIDIOC_G_EXT_CTRLS: 3074 case VIDIOC_TRY_EXT_CTRLS: { 3075 struct v4l2_ext_controls *ctrls = parg; 3076 3077 if (ctrls->count != 0) { 3078 if (ctrls->count > V4L2_CID_MAX_CTRLS) { 3079 ret = -EINVAL; 3080 break; 3081 } 3082 *user_ptr = (void __user *)ctrls->controls; 3083 *kernel_ptr = (void **)&ctrls->controls; 3084 *array_size = sizeof(struct v4l2_ext_control) 3085 * ctrls->count; 3086 ret = 1; 3087 } 3088 break; 3089 } 3090 case VIDIOC_G_FMT: 3091 case VIDIOC_S_FMT: 3092 case VIDIOC_TRY_FMT: { 3093 struct v4l2_format *fmt = parg; 3094 3095 if (fmt->type != V4L2_BUF_TYPE_VIDEO_OVERLAY && 3096 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY) 3097 break; 3098 if (fmt->fmt.win.clipcount > 2048) 3099 return -EINVAL; 3100 if (!fmt->fmt.win.clipcount) 3101 break; 3102 3103 *user_ptr = (void __user *)fmt->fmt.win.clips; 3104 *kernel_ptr = (void **)&fmt->fmt.win.clips; 3105 *array_size = sizeof(struct v4l2_clip) 3106 * fmt->fmt.win.clipcount; 3107 3108 ret = 1; 3109 break; 3110 } 3111 } 3112 3113 return ret; 3114 } 3115 3116 static unsigned int video_translate_cmd(unsigned int cmd) 3117 { 3118 switch (cmd) { 3119 #ifdef CONFIG_COMPAT_32BIT_TIME 3120 case VIDIOC_DQEVENT_TIME32: 3121 return VIDIOC_DQEVENT; 3122 case VIDIOC_QUERYBUF_TIME32: 3123 return VIDIOC_QUERYBUF; 3124 case VIDIOC_QBUF_TIME32: 3125 return VIDIOC_QBUF; 3126 case VIDIOC_DQBUF_TIME32: 3127 return VIDIOC_DQBUF; 3128 case VIDIOC_PREPARE_BUF_TIME32: 3129 return VIDIOC_PREPARE_BUF; 3130 #endif 3131 } 3132 if (in_compat_syscall()) 3133 return v4l2_compat_translate_cmd(cmd); 3134 3135 return cmd; 3136 } 3137 3138 static int video_get_user(void __user *arg, void *parg, 3139 unsigned int real_cmd, unsigned int cmd, 3140 bool *always_copy) 3141 { 3142 unsigned int n = _IOC_SIZE(real_cmd); 3143 int err = 0; 3144 3145 if (!(_IOC_DIR(cmd) & _IOC_WRITE)) { 3146 /* read-only ioctl */ 3147 memset(parg, 0, n); 3148 return 0; 3149 } 3150 3151 /* 3152 * In some cases, only a few fields are used as input, 3153 * i.e. when the app sets "index" and then the driver 3154 * fills in the rest of the structure for the thing 3155 * with that index. We only need to copy up the first 3156 * non-input field. 3157 */ 3158 if (v4l2_is_known_ioctl(real_cmd)) { 3159 u32 flags = v4l2_ioctls[_IOC_NR(real_cmd)].flags; 3160 3161 if (flags & INFO_FL_CLEAR_MASK) 3162 n = (flags & INFO_FL_CLEAR_MASK) >> 16; 3163 *always_copy = flags & INFO_FL_ALWAYS_COPY; 3164 } 3165 3166 if (cmd == real_cmd) { 3167 if (copy_from_user(parg, (void __user *)arg, n)) 3168 err = -EFAULT; 3169 } else if (in_compat_syscall()) { 3170 err = v4l2_compat_get_user(arg, parg, cmd); 3171 } else { 3172 switch (cmd) { 3173 #ifdef CONFIG_COMPAT_32BIT_TIME 3174 case VIDIOC_QUERYBUF_TIME32: 3175 case VIDIOC_QBUF_TIME32: 3176 case VIDIOC_DQBUF_TIME32: 3177 case VIDIOC_PREPARE_BUF_TIME32: { 3178 struct v4l2_buffer_time32 vb32; 3179 struct v4l2_buffer *vb = parg; 3180 3181 if (copy_from_user(&vb32, arg, sizeof(vb32))) 3182 return -EFAULT; 3183 3184 *vb = (struct v4l2_buffer) { 3185 .index = vb32.index, 3186 .type = vb32.type, 3187 .bytesused = vb32.bytesused, 3188 .flags = vb32.flags, 3189 .field = vb32.field, 3190 .timestamp.tv_sec = vb32.timestamp.tv_sec, 3191 .timestamp.tv_usec = vb32.timestamp.tv_usec, 3192 .timecode = vb32.timecode, 3193 .sequence = vb32.sequence, 3194 .memory = vb32.memory, 3195 .m.userptr = vb32.m.userptr, 3196 .length = vb32.length, 3197 .request_fd = vb32.request_fd, 3198 }; 3199 break; 3200 } 3201 #endif 3202 } 3203 } 3204 3205 /* zero out anything we don't copy from userspace */ 3206 if (!err && n < _IOC_SIZE(real_cmd)) 3207 memset((u8 *)parg + n, 0, _IOC_SIZE(real_cmd) - n); 3208 return err; 3209 } 3210 3211 static int video_put_user(void __user *arg, void *parg, 3212 unsigned int real_cmd, unsigned int cmd) 3213 { 3214 if (!(_IOC_DIR(cmd) & _IOC_READ)) 3215 return 0; 3216 3217 if (cmd == real_cmd) { 3218 /* Copy results into user buffer */ 3219 if (copy_to_user(arg, parg, _IOC_SIZE(cmd))) 3220 return -EFAULT; 3221 return 0; 3222 } 3223 3224 if (in_compat_syscall()) 3225 return v4l2_compat_put_user(arg, parg, cmd); 3226 3227 switch (cmd) { 3228 #ifdef CONFIG_COMPAT_32BIT_TIME 3229 case VIDIOC_DQEVENT_TIME32: { 3230 struct v4l2_event *ev = parg; 3231 struct v4l2_event_time32 ev32; 3232 3233 memset(&ev32, 0, sizeof(ev32)); 3234 3235 ev32.type = ev->type; 3236 ev32.pending = ev->pending; 3237 ev32.sequence = ev->sequence; 3238 ev32.timestamp.tv_sec = ev->timestamp.tv_sec; 3239 ev32.timestamp.tv_nsec = ev->timestamp.tv_nsec; 3240 ev32.id = ev->id; 3241 3242 memcpy(&ev32.u, &ev->u, sizeof(ev->u)); 3243 memcpy(&ev32.reserved, &ev->reserved, sizeof(ev->reserved)); 3244 3245 if (copy_to_user(arg, &ev32, sizeof(ev32))) 3246 return -EFAULT; 3247 break; 3248 } 3249 case VIDIOC_QUERYBUF_TIME32: 3250 case VIDIOC_QBUF_TIME32: 3251 case VIDIOC_DQBUF_TIME32: 3252 case VIDIOC_PREPARE_BUF_TIME32: { 3253 struct v4l2_buffer *vb = parg; 3254 struct v4l2_buffer_time32 vb32; 3255 3256 memset(&vb32, 0, sizeof(vb32)); 3257 3258 vb32.index = vb->index; 3259 vb32.type = vb->type; 3260 vb32.bytesused = vb->bytesused; 3261 vb32.flags = vb->flags; 3262 vb32.field = vb->field; 3263 vb32.timestamp.tv_sec = vb->timestamp.tv_sec; 3264 vb32.timestamp.tv_usec = vb->timestamp.tv_usec; 3265 vb32.timecode = vb->timecode; 3266 vb32.sequence = vb->sequence; 3267 vb32.memory = vb->memory; 3268 vb32.m.userptr = vb->m.userptr; 3269 vb32.length = vb->length; 3270 vb32.request_fd = vb->request_fd; 3271 3272 if (copy_to_user(arg, &vb32, sizeof(vb32))) 3273 return -EFAULT; 3274 break; 3275 } 3276 #endif 3277 } 3278 3279 return 0; 3280 } 3281 3282 long 3283 video_usercopy(struct file *file, unsigned int orig_cmd, unsigned long arg, 3284 v4l2_kioctl func) 3285 { 3286 char sbuf[128]; 3287 void *mbuf = NULL, *array_buf = NULL; 3288 void *parg = (void *)arg; 3289 long err = -EINVAL; 3290 bool has_array_args; 3291 bool always_copy = false; 3292 size_t array_size = 0; 3293 void __user *user_ptr = NULL; 3294 void **kernel_ptr = NULL; 3295 unsigned int cmd = video_translate_cmd(orig_cmd); 3296 const size_t ioc_size = _IOC_SIZE(cmd); 3297 3298 /* Copy arguments into temp kernel buffer */ 3299 if (_IOC_DIR(cmd) != _IOC_NONE) { 3300 if (ioc_size <= sizeof(sbuf)) { 3301 parg = sbuf; 3302 } else { 3303 /* too big to allocate from stack */ 3304 mbuf = kmalloc(ioc_size, GFP_KERNEL); 3305 if (NULL == mbuf) 3306 return -ENOMEM; 3307 parg = mbuf; 3308 } 3309 3310 err = video_get_user((void __user *)arg, parg, cmd, 3311 orig_cmd, &always_copy); 3312 if (err) 3313 goto out; 3314 } 3315 3316 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr); 3317 if (err < 0) 3318 goto out; 3319 has_array_args = err; 3320 3321 if (has_array_args) { 3322 array_buf = kvmalloc(array_size, GFP_KERNEL); 3323 err = -ENOMEM; 3324 if (array_buf == NULL) 3325 goto out_array_args; 3326 err = -EFAULT; 3327 if (in_compat_syscall()) 3328 err = v4l2_compat_get_array_args(file, array_buf, 3329 user_ptr, array_size, 3330 orig_cmd, parg); 3331 else 3332 err = copy_from_user(array_buf, user_ptr, array_size) ? 3333 -EFAULT : 0; 3334 if (err) 3335 goto out_array_args; 3336 *kernel_ptr = array_buf; 3337 } 3338 3339 /* Handles IOCTL */ 3340 err = func(file, cmd, parg); 3341 if (err == -ENOTTY || err == -ENOIOCTLCMD) { 3342 err = -ENOTTY; 3343 goto out; 3344 } 3345 3346 if (err == 0) { 3347 if (cmd == VIDIOC_DQBUF) 3348 trace_v4l2_dqbuf(video_devdata(file)->minor, parg); 3349 else if (cmd == VIDIOC_QBUF) 3350 trace_v4l2_qbuf(video_devdata(file)->minor, parg); 3351 } 3352 3353 if (has_array_args) { 3354 *kernel_ptr = (void __force *)user_ptr; 3355 if (in_compat_syscall()) { 3356 int put_err; 3357 3358 put_err = v4l2_compat_put_array_args(file, user_ptr, 3359 array_buf, 3360 array_size, 3361 orig_cmd, parg); 3362 if (put_err) 3363 err = put_err; 3364 } else if (copy_to_user(user_ptr, array_buf, array_size)) { 3365 err = -EFAULT; 3366 } 3367 goto out_array_args; 3368 } 3369 /* 3370 * Some ioctls can return an error, but still have valid 3371 * results that must be returned. 3372 */ 3373 if (err < 0 && !always_copy) 3374 goto out; 3375 3376 out_array_args: 3377 if (video_put_user((void __user *)arg, parg, cmd, orig_cmd)) 3378 err = -EFAULT; 3379 out: 3380 kvfree(array_buf); 3381 kfree(mbuf); 3382 return err; 3383 } 3384 3385 long video_ioctl2(struct file *file, 3386 unsigned int cmd, unsigned long arg) 3387 { 3388 return video_usercopy(file, cmd, arg, __video_do_ioctl); 3389 } 3390 EXPORT_SYMBOL(video_ioctl2); 3391