bcm2835_vcaudio.c revision 1.3.4.1
1 /* $NetBSD: bcm2835_vcaudio.c,v 1.3.4.1 2014/10/19 15:22:00 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2013 Jared D. McNeill <jmcneill (at) invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 /* 30 * VideoCore audio interface 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: bcm2835_vcaudio.c,v 1.3.4.1 2014/10/19 15:22:00 martin Exp $"); 35 36 #include <sys/param.h> 37 #include <sys/types.h> 38 #include <sys/systm.h> 39 #include <sys/device.h> 40 #include <sys/conf.h> 41 #include <sys/bus.h> 42 #include <sys/kmem.h> 43 44 #include <sys/audioio.h> 45 #include <dev/audio_if.h> 46 #include <dev/auconv.h> 47 48 #include <interface/compat/vchi_bsd.h> 49 #include <interface/vchiq_arm/vchiq_netbsd.h> 50 #include <interface/vchi/vchi.h> 51 52 #include "bcm2835_vcaudioreg.h" 53 54 #define vol2pct(vol) (((vol) * 100) / 255) 55 56 enum { 57 VCAUDIO_OUTPUT_CLASS, 58 VCAUDIO_INPUT_CLASS, 59 VCAUDIO_OUTPUT_MASTER_VOLUME, 60 VCAUDIO_INPUT_DAC_VOLUME, 61 VCAUDIO_ENUM_LAST, 62 }; 63 64 enum vcaudio_dest { 65 VCAUDIO_DEST_AUTO = 0, 66 VCAUDIO_DEST_HP = 1, 67 VCAUDIO_DEST_HDMI = 2, 68 }; 69 70 71 /* 72 * Standard message size is 4000 bytes and VCHIQ can accept 16 messages. 73 * 74 * 4000 bytes of 16bit 48kHz stereo is approximately 21ms. 75 * 76 * We get complete messages at ~10ms intervals. 77 * 78 * Setting blocksize to 2 x 4000 means that we send approx 42ms of audio. We 79 * prefill by two blocks before starting audio meaning we have 83ms of latency. 80 */ 81 82 #define VCAUDIO_MSGSIZE 4000 83 #define VCAUDIO_NUMMSGS 2 84 #define VCAUDIO_BLOCKSIZE (VCAUDIO_MSGSIZE * VCAUDIO_NUMMSGS) 85 #define VCAUDIO_BUFFERSIZE 128000 86 #define VCAUDIO_PREFILLCOUNT 2 87 88 struct vcaudio_softc { 89 device_t sc_dev; 90 device_t sc_audiodev; 91 92 lwp_t *sc_lwp; 93 94 kmutex_t sc_lock; 95 kmutex_t sc_intr_lock; 96 kcondvar_t sc_datacv; 97 98 kmutex_t sc_msglock; 99 kcondvar_t sc_msgcv; 100 101 struct audio_format sc_format; 102 struct audio_encoding_set *sc_encodings; 103 104 void (*sc_pint)(void *); 105 void *sc_pintarg; 106 audio_params_t sc_pparam; 107 bool sc_started; 108 int sc_pblkcnt; // prefill block count 109 int sc_abytes; // available bytes 110 int sc_pbytes; // played bytes 111 off_t sc_ppos; 112 void *sc_pstart; 113 void *sc_pend; 114 int sc_pblksize; 115 116 bool sc_msgdone; 117 int sc_success; 118 119 VCHI_INSTANCE_T sc_instance; 120 VCHI_CONNECTION_T sc_connection; 121 VCHI_SERVICE_HANDLE_T sc_service; 122 123 short sc_peer_version; 124 125 int sc_volume; 126 enum vcaudio_dest sc_dest; 127 }; 128 129 static int vcaudio_match(device_t, cfdata_t, void *); 130 static void vcaudio_attach(device_t, device_t, void *); 131 static int vcaudio_rescan(device_t, const char *, const int *); 132 static void vcaudio_childdet(device_t, device_t); 133 134 static int vcaudio_init(struct vcaudio_softc *); 135 static void vcaudio_service_callback(void *, 136 const VCHI_CALLBACK_REASON_T, void *); 137 static int vcaudio_msg_sync(struct vcaudio_softc *, VC_AUDIO_MSG_T *, 138 size_t); 139 static void vcaudio_worker(void *); 140 141 static int vcaudio_open(void *, int); 142 static void vcaudio_close(void *); 143 static int vcaudio_query_encoding(void *, struct audio_encoding *); 144 static int vcaudio_set_params(void *, int, int, 145 audio_params_t *, audio_params_t *, 146 stream_filter_list_t *, stream_filter_list_t *); 147 static int vcaudio_halt_output(void *); 148 static int vcaudio_halt_input(void *); 149 static int vcaudio_set_port(void *, mixer_ctrl_t *); 150 static int vcaudio_get_port(void *, mixer_ctrl_t *); 151 static int vcaudio_query_devinfo(void *, mixer_devinfo_t *); 152 static int vcaudio_getdev(void *, struct audio_device *); 153 static int vcaudio_get_props(void *); 154 155 static int vcaudio_round_blocksize(void *, int, int, 156 const audio_params_t *); 157 static size_t vcaudio_round_buffersize(void *, int, size_t); 158 159 static int vcaudio_trigger_output(void *, void *, void *, int, 160 void (*)(void *), void *, const audio_params_t *); 161 static int vcaudio_trigger_input(void *, void *, void *, int, 162 void (*)(void *), void *, const audio_params_t *); 163 164 static void vcaudio_get_locks(void *, kmutex_t **, kmutex_t **); 165 166 static const struct audio_hw_if vcaudio_hw_if = { 167 .open = vcaudio_open, 168 .close = vcaudio_close, 169 .query_encoding = vcaudio_query_encoding, 170 .set_params = vcaudio_set_params, 171 .halt_output = vcaudio_halt_output, 172 .halt_input = vcaudio_halt_input, 173 .getdev = vcaudio_getdev, 174 .set_port = vcaudio_set_port, 175 .get_port = vcaudio_get_port, 176 .query_devinfo = vcaudio_query_devinfo, 177 .get_props = vcaudio_get_props, 178 .round_blocksize = vcaudio_round_blocksize, 179 .round_buffersize = vcaudio_round_buffersize, 180 .trigger_output = vcaudio_trigger_output, 181 .trigger_input = vcaudio_trigger_input, 182 .get_locks = vcaudio_get_locks, 183 }; 184 185 CFATTACH_DECL2_NEW(vcaudio, sizeof(struct vcaudio_softc), 186 vcaudio_match, vcaudio_attach, NULL, NULL, vcaudio_rescan, 187 vcaudio_childdet); 188 189 static int 190 vcaudio_match(device_t parent, cfdata_t match, void *aux) 191 { 192 struct vchiq_attach_args *vaa = aux; 193 194 return !strcmp(vaa->vaa_name, "AUDS"); 195 } 196 197 static void 198 vcaudio_attach(device_t parent, device_t self, void *aux) 199 { 200 struct vcaudio_softc *sc = device_private(self); 201 int error; 202 203 sc->sc_dev = self; 204 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE); 205 mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_NONE); 206 mutex_init(&sc->sc_msglock, MUTEX_DEFAULT, IPL_NONE); 207 cv_init(&sc->sc_msgcv, "msg"); 208 cv_init(&sc->sc_datacv, "data"); 209 sc->sc_success = -1; 210 211 error = kthread_create(PRI_BIO, KTHREAD_MPSAFE, NULL, vcaudio_worker, 212 sc, &sc->sc_lwp, "vcaudio"); 213 if (error) { 214 aprint_error(": couldn't create thread (%d)\n", error); 215 return; 216 } 217 218 aprint_naive("\n"); 219 aprint_normal(": auds\n"); 220 221 error = vcaudio_rescan(self, NULL, NULL); 222 if (error) 223 aprint_error_dev(self, "not configured\n"); 224 225 } 226 227 static int 228 vcaudio_rescan(device_t self, const char *ifattr, const int *locs) 229 { 230 struct vcaudio_softc *sc = device_private(self); 231 int error; 232 233 if (ifattr_match(ifattr, "audiobus") && sc->sc_audiodev == NULL) { 234 error = vcaudio_init(sc); 235 if (error) { 236 return error; 237 } 238 239 sc->sc_audiodev = audio_attach_mi(&vcaudio_hw_if, 240 sc, sc->sc_dev); 241 } 242 return 0; 243 } 244 245 static void 246 vcaudio_childdet(device_t self, device_t child) 247 { 248 struct vcaudio_softc *sc = device_private(self); 249 250 if (sc->sc_audiodev == child) 251 sc->sc_audiodev = NULL; 252 } 253 254 static int 255 vcaudio_init(struct vcaudio_softc *sc) 256 { 257 VC_AUDIO_MSG_T msg; 258 int error; 259 260 sc->sc_volume = 128; 261 sc->sc_dest = VCAUDIO_DEST_AUTO; 262 263 sc->sc_format.mode = AUMODE_PLAY|AUMODE_RECORD; 264 sc->sc_format.encoding = AUDIO_ENCODING_SLINEAR_LE; 265 sc->sc_format.validbits = 16; 266 sc->sc_format.precision = 16; 267 sc->sc_format.channels = 2; 268 sc->sc_format.channel_mask = AUFMT_STEREO; 269 sc->sc_format.frequency_type = 0; 270 sc->sc_format.frequency[0] = 48000; 271 sc->sc_format.frequency[1] = 48000; 272 273 error = auconv_create_encodings(&sc->sc_format, 1, &sc->sc_encodings); 274 if (error) { 275 aprint_error_dev(sc->sc_dev, 276 "couldn't create encodings (error=%d)\n", error); 277 return error; 278 } 279 280 error = vchi_initialise(&sc->sc_instance); 281 if (error) { 282 aprint_error_dev(sc->sc_dev, 283 "couldn't init vchi instance (%d)\n", error); 284 return EIO; 285 } 286 287 error = vchi_connect(NULL, 0, sc->sc_instance); 288 if (error) { 289 aprint_error_dev(sc->sc_dev, 290 "couldn't connect vchi (%d)\n", error); 291 return EIO; 292 } 293 294 SERVICE_CREATION_T setup = { 295 .version = VCHI_VERSION(VC_AUDIOSERV_VER), 296 .service_id = VC_AUDIO_SERVER_NAME, 297 .connection = &sc->sc_connection, 298 .rx_fifo_size = 0, 299 .tx_fifo_size = 0, 300 .callback = vcaudio_service_callback, 301 .callback_param = sc, 302 .want_unaligned_bulk_rx = 1, 303 .want_unaligned_bulk_tx = 1, 304 .want_crc = 0, 305 }; 306 307 error = vchi_service_open(sc->sc_instance, &setup, &sc->sc_service); 308 if (error) { 309 aprint_error_dev(sc->sc_dev, "couldn't open service (%d)\n", 310 error); 311 return EIO; 312 } 313 314 vchi_get_peer_version(sc->sc_service, &sc->sc_peer_version); 315 316 if (sc->sc_peer_version < 2) { 317 aprint_error_dev(sc->sc_dev, 318 "peer version (%d) is less than the required version (2)\n", 319 sc->sc_peer_version); 320 return EINVAL; 321 } 322 323 memset(&msg, 0, sizeof(msg)); 324 msg.type = VC_AUDIO_MSG_TYPE_OPEN; 325 error = vchi_msg_queue(sc->sc_service, &msg, sizeof(msg), 326 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL); 327 if (error) { 328 aprint_error_dev(sc->sc_dev, 329 "couldn't send OPEN message (%d)\n", error); 330 } 331 332 memset(&msg, 0, sizeof(msg)); 333 msg.type = VC_AUDIO_MSG_TYPE_CONFIG; 334 msg.u.config.channels = 2; 335 msg.u.config.samplerate = 48000; 336 msg.u.config.bps = 16; 337 error = vcaudio_msg_sync(sc, &msg, sizeof(msg)); 338 if (error) { 339 aprint_error_dev(sc->sc_dev, 340 "couldn't send CONFIG message (%d)\n", error); 341 } 342 343 memset(&msg, 0, sizeof(msg)); 344 msg.type = VC_AUDIO_MSG_TYPE_CONTROL; 345 msg.u.control.volume = vol2pct(sc->sc_volume); 346 msg.u.control.dest = VCAUDIO_DEST_AUTO; 347 error = vcaudio_msg_sync(sc, &msg, sizeof(msg)); 348 if (error) { 349 aprint_error_dev(sc->sc_dev, 350 "couldn't send CONTROL message (%d)\n", error); 351 } 352 353 vchi_service_release(sc->sc_service); 354 355 return 0; 356 } 357 358 static void 359 vcaudio_service_callback(void *priv, const VCHI_CALLBACK_REASON_T reason, 360 void *msg_handle) 361 { 362 struct vcaudio_softc *sc = priv; 363 VC_AUDIO_MSG_T msg; 364 int32_t msglen = 0; 365 int error; 366 void (*intr)(void *) = NULL; 367 void *intrarg = NULL; 368 369 if (sc == NULL || reason != VCHI_CALLBACK_MSG_AVAILABLE) 370 return; 371 372 memset(&msg, 0, sizeof(msg)); 373 error = vchi_msg_dequeue(sc->sc_service, &msg, sizeof(msg), &msglen, 374 VCHI_FLAGS_NONE); 375 if (error) { 376 device_printf(sc->sc_dev, "couldn't dequeue msg (%d)\n", 377 error); 378 return; 379 } 380 381 switch (msg.type) { 382 case VC_AUDIO_MSG_TYPE_RESULT: 383 mutex_enter(&sc->sc_msglock); 384 sc->sc_success = msg.u.result.success; 385 sc->sc_msgdone = true; 386 cv_broadcast(&sc->sc_msgcv); 387 mutex_exit(&sc->sc_msglock); 388 break; 389 390 case VC_AUDIO_MSG_TYPE_COMPLETE: 391 intr = msg.u.complete.callback; 392 intrarg = msg.u.complete.cookie; 393 if (intr && intrarg) { 394 int count = msg.u.complete.count & 0xffff; 395 int perr = (msg.u.complete.count & __BIT(30)) != 0; 396 bool sched = false; 397 398 mutex_enter(&sc->sc_intr_lock); 399 400 if (count > 0) { 401 sc->sc_pbytes += count; 402 } 403 if (perr && sc->sc_started) { 404 #ifdef VCAUDIO_DEBUG 405 device_printf(sc->sc_dev, "underrun\n"); 406 #endif 407 sched = true; 408 } 409 if (sc->sc_pbytes >= sc->sc_pblksize) { 410 sc->sc_pbytes -= sc->sc_pblksize; 411 sched = true; 412 } 413 414 if (sched) { 415 intr(intrarg); 416 sc->sc_abytes += sc->sc_pblksize; 417 cv_signal(&sc->sc_datacv); 418 } 419 mutex_exit(&sc->sc_intr_lock); 420 } 421 break; 422 default: 423 break; 424 } 425 } 426 427 static void 428 vcaudio_worker(void *priv) 429 { 430 struct vcaudio_softc *sc = priv; 431 VC_AUDIO_MSG_T msg; 432 void (*intr)(void *); 433 void *intrarg; 434 void *block; 435 int error, resid, off, nb, count; 436 437 mutex_enter(&sc->sc_intr_lock); 438 439 while (true) { 440 intr = sc->sc_pint; 441 intrarg = sc->sc_pintarg; 442 443 if (intr == NULL || intrarg == NULL) { 444 cv_wait_sig(&sc->sc_datacv, &sc->sc_intr_lock); 445 continue; 446 } 447 448 KASSERT(sc->sc_pblksize != 0); 449 450 if (sc->sc_abytes < sc->sc_pblksize) { 451 cv_wait_sig(&sc->sc_datacv, &sc->sc_intr_lock); 452 continue; 453 } 454 count = sc->sc_pblksize; 455 456 memset(&msg, 0, sizeof(msg)); 457 msg.type = VC_AUDIO_MSG_TYPE_WRITE; 458 msg.u.write.max_packet = VCAUDIO_MSGSIZE; 459 msg.u.write.count = count; 460 msg.u.write.callback = intr; 461 msg.u.write.cookie = intrarg; 462 msg.u.write.silence = 0; 463 464 block = (uint8_t *)sc->sc_pstart + sc->sc_ppos; 465 resid = count; 466 off = 0; 467 468 vchi_service_use(sc->sc_service); 469 470 error = vchi_msg_queue(sc->sc_service, &msg, sizeof(msg), 471 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL); 472 if (error) { 473 printf("%s: failed to write (%d)\n", __func__, error); 474 goto done; 475 } 476 477 while (resid > 0) { 478 nb = min(resid, msg.u.write.max_packet); 479 error = vchi_msg_queue(sc->sc_service, 480 (char *)block + off, nb, 481 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL); 482 if (error) { 483 /* XXX What to do here? */ 484 device_printf(sc->sc_dev, 485 "failed to queue data (%d)\n", error); 486 goto done; 487 } 488 off += nb; 489 resid -= nb; 490 } 491 492 sc->sc_abytes -= count; 493 sc->sc_ppos += count; 494 if ((uint8_t *)sc->sc_pstart + sc->sc_ppos >= 495 (uint8_t *)sc->sc_pend) 496 sc->sc_ppos = 0; 497 498 if (!sc->sc_started) { 499 ++sc->sc_pblkcnt; 500 501 if (sc->sc_pblkcnt == VCAUDIO_PREFILLCOUNT) { 502 503 memset(&msg, 0, sizeof(msg)); 504 msg.type = VC_AUDIO_MSG_TYPE_START; 505 error = vchi_msg_queue(sc->sc_service, &msg, 506 sizeof(msg), VCHI_FLAGS_BLOCK_UNTIL_QUEUED, 507 NULL); 508 if (error) { 509 device_printf(sc->sc_dev, 510 "failed to start (%d)\n", error); 511 goto done; 512 } 513 sc->sc_started = true; 514 sc->sc_pbytes = 0; 515 } else { 516 intr(intrarg); 517 sc->sc_abytes += sc->sc_pblksize; 518 } 519 } 520 521 done: 522 vchi_service_release(sc->sc_service); 523 } 524 } 525 526 static int 527 vcaudio_msg_sync(struct vcaudio_softc *sc, VC_AUDIO_MSG_T *msg, size_t msglen) 528 { 529 int error = 0; 530 531 mutex_enter(&sc->sc_msglock); 532 533 sc->sc_success = -1; 534 sc->sc_msgdone = false; 535 536 error = vchi_msg_queue(sc->sc_service, msg, msglen, 537 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL); 538 if (error) { 539 printf("%s: failed to queue message (%d)\n", __func__, error); 540 goto done; 541 } 542 543 while (!sc->sc_msgdone) { 544 error = cv_wait_sig(&sc->sc_msgcv, &sc->sc_msglock); 545 if (error) 546 break; 547 } 548 if (sc->sc_success != 0) 549 error = EIO; 550 done: 551 mutex_exit(&sc->sc_msglock); 552 553 return error; 554 } 555 556 static int 557 vcaudio_open(void *priv, int flags) 558 { 559 return 0; 560 } 561 562 static void 563 vcaudio_close(void *priv) 564 { 565 } 566 567 static int 568 vcaudio_query_encoding(void *priv, struct audio_encoding *ae) 569 { 570 struct vcaudio_softc *sc = priv; 571 572 return auconv_query_encoding(sc->sc_encodings, ae); 573 } 574 575 static int 576 vcaudio_set_params(void *priv, int setmode, int usemode, 577 audio_params_t *play, audio_params_t *rec, 578 stream_filter_list_t *pfil, stream_filter_list_t *rfil) 579 { 580 struct vcaudio_softc *sc = priv; 581 int index; 582 583 if (play && (setmode & AUMODE_PLAY)) { 584 index = auconv_set_converter(&sc->sc_format, 1, 585 AUMODE_PLAY, play, true, pfil); 586 if (index < 0) 587 return EINVAL; 588 } 589 590 return 0; 591 } 592 593 static int 594 vcaudio_halt_output(void *priv) 595 { 596 struct vcaudio_softc *sc = priv; 597 VC_AUDIO_MSG_T msg; 598 int error = 0; 599 600 KASSERT(mutex_owned(&sc->sc_intr_lock)); 601 602 vchi_service_use(sc->sc_service); 603 memset(&msg, 0, sizeof(msg)); 604 msg.type = VC_AUDIO_MSG_TYPE_STOP; 605 msg.u.stop.draining = 0; 606 error = vchi_msg_queue(sc->sc_service, &msg, sizeof(msg), 607 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL); 608 if (error) { 609 device_printf(sc->sc_dev, "couldn't send STOP message (%d)\n", 610 error); 611 } 612 vchi_service_release(sc->sc_service); 613 614 sc->sc_pint = NULL; 615 sc->sc_pintarg = NULL; 616 sc->sc_started = false; 617 618 #ifdef VCAUDIO_DEBUG 619 device_printf(sc->sc_dev, "halting output\n"); 620 #endif 621 622 return error; 623 } 624 625 static int 626 vcaudio_halt_input(void *priv) 627 { 628 return EINVAL; 629 } 630 631 static int 632 vcaudio_set_port(void *priv, mixer_ctrl_t *mc) 633 { 634 struct vcaudio_softc *sc = priv; 635 VC_AUDIO_MSG_T msg; 636 int error; 637 638 switch (mc->dev) { 639 case VCAUDIO_OUTPUT_MASTER_VOLUME: 640 case VCAUDIO_INPUT_DAC_VOLUME: 641 sc->sc_volume = mc->un.value.level[AUDIO_MIXER_LEVEL_LEFT]; 642 643 vchi_service_use(sc->sc_service); 644 645 memset(&msg, 0, sizeof(msg)); 646 msg.type = VC_AUDIO_MSG_TYPE_CONTROL; 647 msg.u.control.volume = vol2pct(sc->sc_volume); 648 msg.u.control.dest = VCAUDIO_DEST_AUTO; 649 650 error = vcaudio_msg_sync(sc, &msg, sizeof(msg)); 651 if (error) { 652 device_printf(sc->sc_dev, 653 "couldn't send CONTROL message (%d)\n", error); 654 } 655 656 vchi_service_release(sc->sc_service); 657 658 return error; 659 } 660 return ENXIO; 661 } 662 663 static int 664 vcaudio_get_port(void *priv, mixer_ctrl_t *mc) 665 { 666 struct vcaudio_softc *sc = priv; 667 668 switch (mc->dev) { 669 case VCAUDIO_OUTPUT_MASTER_VOLUME: 670 case VCAUDIO_INPUT_DAC_VOLUME: 671 mc->un.value.level[AUDIO_MIXER_LEVEL_LEFT] = 672 mc->un.value.level[AUDIO_MIXER_LEVEL_RIGHT] = 673 sc->sc_volume; 674 return 0; 675 } 676 return ENXIO; 677 } 678 679 static int 680 vcaudio_query_devinfo(void *priv, mixer_devinfo_t *di) 681 { 682 switch (di->index) { 683 case VCAUDIO_OUTPUT_CLASS: 684 di->mixer_class = VCAUDIO_OUTPUT_CLASS; 685 strcpy(di->label.name, AudioCoutputs); 686 di->type = AUDIO_MIXER_CLASS; 687 di->next = di->prev = AUDIO_MIXER_LAST; 688 return 0; 689 case VCAUDIO_INPUT_CLASS: 690 di->mixer_class = VCAUDIO_INPUT_CLASS; 691 strcpy(di->label.name, AudioCinputs); 692 di->type = AUDIO_MIXER_CLASS; 693 di->next = di->prev = AUDIO_MIXER_LAST; 694 return 0; 695 case VCAUDIO_OUTPUT_MASTER_VOLUME: 696 di->mixer_class = VCAUDIO_OUTPUT_CLASS; 697 strcpy(di->label.name, AudioNmaster); 698 di->type = AUDIO_MIXER_VALUE; 699 di->next = di->prev = AUDIO_MIXER_LAST; 700 di->un.v.num_channels = 2; 701 strcpy(di->un.v.units.name, AudioNvolume); 702 return 0; 703 case VCAUDIO_INPUT_DAC_VOLUME: 704 di->mixer_class = VCAUDIO_INPUT_CLASS; 705 strcpy(di->label.name, AudioNdac); 706 di->type = AUDIO_MIXER_VALUE; 707 di->next = di->prev = AUDIO_MIXER_LAST; 708 di->un.v.num_channels = 2; 709 strcpy(di->un.v.units.name, AudioNvolume); 710 return 0; 711 } 712 713 return ENXIO; 714 } 715 716 static int 717 vcaudio_getdev(void *priv, struct audio_device *audiodev) 718 { 719 struct vcaudio_softc *sc = priv; 720 721 snprintf(audiodev->name, sizeof(audiodev->name), "vchiq auds"); 722 snprintf(audiodev->version, sizeof(audiodev->version), 723 "%d", sc->sc_peer_version); 724 snprintf(audiodev->config, sizeof(audiodev->config), "vcaudio"); 725 726 return 0; 727 } 728 729 static int 730 vcaudio_get_props(void *priv) 731 { 732 return AUDIO_PROP_PLAYBACK|AUDIO_PROP_CAPTURE|AUDIO_PROP_INDEPENDENT; 733 } 734 735 static int 736 vcaudio_round_blocksize(void *priv, int bs, int mode, 737 const audio_params_t *params) 738 { 739 return VCAUDIO_BLOCKSIZE; 740 } 741 742 static size_t 743 vcaudio_round_buffersize(void *priv, int direction, size_t bufsize) 744 { 745 746 return VCAUDIO_BUFFERSIZE; 747 } 748 749 static int 750 vcaudio_trigger_output(void *priv, void *start, void *end, int blksize, 751 void (*intr)(void *), void *intrarg, const audio_params_t *params) 752 { 753 struct vcaudio_softc *sc = priv; 754 755 ASSERT_SLEEPABLE(); 756 KASSERT(mutex_owned(&sc->sc_intr_lock)); 757 758 sc->sc_pparam = *params; 759 sc->sc_pint = intr; 760 sc->sc_pintarg = intrarg; 761 sc->sc_ppos = 0; 762 sc->sc_pstart = start; 763 sc->sc_pend = end; 764 sc->sc_pblksize = blksize; 765 sc->sc_pblkcnt = 0; 766 sc->sc_pbytes = 0; 767 sc->sc_abytes = blksize; 768 769 cv_signal(&sc->sc_datacv); 770 771 return 0; 772 } 773 774 static int 775 vcaudio_trigger_input(void *priv, void *start, void *end, int blksize, 776 void (*intr)(void *), void *intrarg, const audio_params_t *params) 777 { 778 return EINVAL; 779 } 780 781 static void 782 vcaudio_get_locks(void *priv, kmutex_t **intr, kmutex_t **thread) 783 { 784 struct vcaudio_softc *sc = priv; 785 786 *intr = &sc->sc_intr_lock; 787 *thread = &sc->sc_lock; 788 } 789
Indexes created Mon Oct 20 20:10:13 GMT 2025