bcm2835_vcaudio.c revision 1.11.16.1
1 /* $NetBSD: bcm2835_vcaudio.c,v 1.11.16.1 2019/06/10 22:05:52 christos 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 1.11.16.1 2019/06/10 22:05:52 christos 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/audio_if.h> 46 47 #include <interface/compat/vchi_bsd.h> 48 #include <interface/vchiq_arm/vchiq_netbsd.h> 49 #include <interface/vchi/vchi.h> 50 51 #include "bcm2835_vcaudioreg.h" 52 53 /* levels with 5% volume step */ 54 static int vcaudio_levels[] = { 55 -10239, -4605, -3794, -3218, -2772, 56 -2407, -2099, -1832, -1597, -1386, 57 -1195, -1021, -861, -713, -575, 58 -446, -325, -210, -102, 0, 59 }; 60 61 #define vol2db(vol) vcaudio_levels[((vol) * 20) >> 8] 62 #define vol2vc(vol) ((uint32_t)(-(vol2db((vol)) << 8) / 100)) 63 64 enum { 65 VCAUDIO_OUTPUT_CLASS, 66 VCAUDIO_INPUT_CLASS, 67 VCAUDIO_OUTPUT_MASTER_VOLUME, 68 VCAUDIO_INPUT_DAC_VOLUME, 69 VCAUDIO_OUTPUT_AUTO_VOLUME, 70 VCAUDIO_OUTPUT_HEADPHONE_VOLUME, 71 VCAUDIO_OUTPUT_HDMI_VOLUME, 72 VCAUDIO_OUTPUT_SELECT, 73 VCAUDIO_ENUM_LAST, 74 }; 75 76 enum vcaudio_dest { 77 VCAUDIO_DEST_AUTO = 0, 78 VCAUDIO_DEST_HP = 1, 79 VCAUDIO_DEST_HDMI = 2, 80 }; 81 82 /* 83 * Maximum message size is 4000 bytes and VCHIQ can accept 16 messages. 84 * 85 * 4000 bytes of 16bit 48kHz stereo is approximately 21ms. 86 * 87 * We get complete messages at ~10ms intervals. 88 * 89 * Setting blocksize to 4 x 1600 means that we send approx 33ms of audio. We 90 * prefill by two blocks before starting audio meaning we have 50ms of latency. 91 * 92 * Six messages of 1600 bytes was chosen working back from a desired latency of 93 * 50ms. 94 */ 95 96 /* 40ms block of 16bit 48kHz stereo is 7680 bytes. */ 97 #define VCAUDIO_MSGSIZE 1920 98 #define VCAUDIO_NUMMSGS 4 99 #define VCAUDIO_BLOCKSIZE (VCAUDIO_MSGSIZE * VCAUDIO_NUMMSGS) 100 /* The driver seems to have no buffer size restrictions. */ 101 #define VCAUDIO_PREFILLCOUNT 2 102 103 struct vcaudio_softc { 104 device_t sc_dev; 105 device_t sc_audiodev; 106 107 lwp_t *sc_lwp; 108 109 kmutex_t sc_lock; 110 kmutex_t sc_intr_lock; 111 kcondvar_t sc_datacv; 112 113 kmutex_t sc_msglock; 114 kcondvar_t sc_msgcv; 115 116 struct audio_format sc_format; 117 118 void (*sc_pint)(void *); 119 void *sc_pintarg; 120 audio_params_t sc_pparam; 121 bool sc_started; 122 int sc_pblkcnt; // prefill block count 123 int sc_abytes; // available bytes 124 int sc_pbytes; // played bytes 125 off_t sc_ppos; 126 void *sc_pstart; 127 void *sc_pend; 128 int sc_pblksize; 129 130 bool sc_msgdone; 131 int sc_success; 132 133 VCHI_INSTANCE_T sc_instance; 134 VCHI_CONNECTION_T sc_connection; 135 VCHI_SERVICE_HANDLE_T sc_service; 136 137 short sc_peer_version; 138 139 int sc_hwvol[3]; 140 enum vcaudio_dest sc_dest; 141 142 uint8_t sc_swvol; 143 }; 144 145 static int vcaudio_match(device_t, cfdata_t, void *); 146 static void vcaudio_attach(device_t, device_t, void *); 147 static int vcaudio_rescan(device_t, const char *, const int *); 148 static void vcaudio_childdet(device_t, device_t); 149 150 static int vcaudio_init(struct vcaudio_softc *); 151 static void vcaudio_service_callback(void *, 152 const VCHI_CALLBACK_REASON_T, void *); 153 static int vcaudio_msg_sync(struct vcaudio_softc *, VC_AUDIO_MSG_T *, 154 size_t); 155 static void vcaudio_worker(void *); 156 157 static int vcaudio_query_format(void *, audio_format_query_t *); 158 static int vcaudio_set_format(void *, int, 159 const audio_params_t *, const audio_params_t *, 160 audio_filter_reg_t *, audio_filter_reg_t *); 161 static int vcaudio_halt_output(void *); 162 static int vcaudio_halt_input(void *); 163 static int vcaudio_set_port(void *, mixer_ctrl_t *); 164 static int vcaudio_get_port(void *, mixer_ctrl_t *); 165 static int vcaudio_query_devinfo(void *, mixer_devinfo_t *); 166 static int vcaudio_getdev(void *, struct audio_device *); 167 static int vcaudio_get_props(void *); 168 169 static int vcaudio_round_blocksize(void *, int, int, 170 const audio_params_t *); 171 172 static int vcaudio_trigger_output(void *, void *, void *, int, 173 void (*)(void *), void *, const audio_params_t *); 174 static int vcaudio_trigger_input(void *, void *, void *, int, 175 void (*)(void *), void *, const audio_params_t *); 176 177 static void vcaudio_get_locks(void *, kmutex_t **, kmutex_t **); 178 179 static void vcaudio_swvol_codec(audio_filter_arg_t *); 180 181 static const struct audio_hw_if vcaudio_hw_if = { 182 .query_format = vcaudio_query_format, 183 .set_format = vcaudio_set_format, 184 .halt_output = vcaudio_halt_output, 185 .halt_input = vcaudio_halt_input, 186 .getdev = vcaudio_getdev, 187 .set_port = vcaudio_set_port, 188 .get_port = vcaudio_get_port, 189 .query_devinfo = vcaudio_query_devinfo, 190 .get_props = vcaudio_get_props, 191 .round_blocksize = vcaudio_round_blocksize, 192 .trigger_output = vcaudio_trigger_output, 193 .trigger_input = vcaudio_trigger_input, 194 .get_locks = vcaudio_get_locks, 195 }; 196 197 CFATTACH_DECL2_NEW(vcaudio, sizeof(struct vcaudio_softc), 198 vcaudio_match, vcaudio_attach, NULL, NULL, vcaudio_rescan, 199 vcaudio_childdet); 200 201 static int 202 vcaudio_match(device_t parent, cfdata_t match, void *aux) 203 { 204 struct vchiq_attach_args *vaa = aux; 205 206 return !strcmp(vaa->vaa_name, "AUDS"); 207 } 208 209 static void 210 vcaudio_attach(device_t parent, device_t self, void *aux) 211 { 212 struct vcaudio_softc *sc = device_private(self); 213 int error; 214 215 sc->sc_dev = self; 216 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE); 217 mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_NONE); 218 mutex_init(&sc->sc_msglock, MUTEX_DEFAULT, IPL_NONE); 219 cv_init(&sc->sc_msgcv, "msg"); 220 cv_init(&sc->sc_datacv, "data"); 221 sc->sc_success = -1; 222 223 error = kthread_create(PRI_BIO, KTHREAD_MPSAFE, NULL, vcaudio_worker, 224 sc, &sc->sc_lwp, "vcaudio"); 225 if (error) { 226 aprint_error(": couldn't create thread (%d)\n", error); 227 return; 228 } 229 230 aprint_naive("\n"); 231 aprint_normal(": auds\n"); 232 233 error = vcaudio_rescan(self, NULL, NULL); 234 if (error) 235 aprint_error_dev(self, "not configured\n"); 236 237 } 238 239 static int 240 vcaudio_rescan(device_t self, const char *ifattr, const int *locs) 241 { 242 struct vcaudio_softc *sc = device_private(self); 243 int error; 244 245 if (ifattr_match(ifattr, "audiobus") && sc->sc_audiodev == NULL) { 246 error = vcaudio_init(sc); 247 if (error) { 248 return error; 249 } 250 251 sc->sc_audiodev = audio_attach_mi(&vcaudio_hw_if, 252 sc, sc->sc_dev); 253 } 254 return 0; 255 } 256 257 static void 258 vcaudio_childdet(device_t self, device_t child) 259 { 260 struct vcaudio_softc *sc = device_private(self); 261 262 if (sc->sc_audiodev == child) 263 sc->sc_audiodev = NULL; 264 } 265 266 static int 267 vcaudio_init(struct vcaudio_softc *sc) 268 { 269 VC_AUDIO_MSG_T msg; 270 int error; 271 272 sc->sc_swvol = 255; 273 sc->sc_hwvol[VCAUDIO_DEST_AUTO] = 255; 274 sc->sc_hwvol[VCAUDIO_DEST_HP] = 255; 275 sc->sc_hwvol[VCAUDIO_DEST_HDMI] = 255; 276 sc->sc_dest = VCAUDIO_DEST_AUTO; 277 278 sc->sc_format.mode = AUMODE_PLAY|AUMODE_RECORD; 279 sc->sc_format.encoding = AUDIO_ENCODING_SLINEAR_LE; 280 sc->sc_format.validbits = 16; 281 sc->sc_format.precision = 16; 282 sc->sc_format.channels = 2; 283 sc->sc_format.channel_mask = AUFMT_STEREO; 284 sc->sc_format.frequency_type = 0; 285 sc->sc_format.frequency[0] = 48000; 286 sc->sc_format.frequency[1] = 48000; 287 288 error = vchi_initialise(&sc->sc_instance); 289 if (error) { 290 aprint_error_dev(sc->sc_dev, 291 "couldn't init vchi instance (%d)\n", error); 292 return EIO; 293 } 294 295 error = vchi_connect(NULL, 0, sc->sc_instance); 296 if (error) { 297 aprint_error_dev(sc->sc_dev, 298 "couldn't connect vchi (%d)\n", error); 299 return EIO; 300 } 301 302 SERVICE_CREATION_T setup = { 303 .version = VCHI_VERSION(VC_AUDIOSERV_VER), 304 .service_id = VC_AUDIO_SERVER_NAME, 305 .connection = &sc->sc_connection, 306 .rx_fifo_size = 0, 307 .tx_fifo_size = 0, 308 .callback = vcaudio_service_callback, 309 .callback_param = sc, 310 .want_unaligned_bulk_rx = 1, 311 .want_unaligned_bulk_tx = 1, 312 .want_crc = 0, 313 }; 314 315 error = vchi_service_open(sc->sc_instance, &setup, &sc->sc_service); 316 if (error) { 317 aprint_error_dev(sc->sc_dev, "couldn't open service (%d)\n", 318 error); 319 return EIO; 320 } 321 322 vchi_get_peer_version(sc->sc_service, &sc->sc_peer_version); 323 324 if (sc->sc_peer_version < 2) { 325 aprint_error_dev(sc->sc_dev, 326 "peer version (%d) is less than the required version (2)\n", 327 sc->sc_peer_version); 328 return EINVAL; 329 } 330 331 memset(&msg, 0, sizeof(msg)); 332 msg.type = VC_AUDIO_MSG_TYPE_OPEN; 333 error = vchi_msg_queue(sc->sc_service, &msg, sizeof(msg), 334 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL); 335 if (error) { 336 aprint_error_dev(sc->sc_dev, 337 "couldn't send OPEN message (%d)\n", error); 338 } 339 340 memset(&msg, 0, sizeof(msg)); 341 msg.type = VC_AUDIO_MSG_TYPE_CONFIG; 342 msg.u.config.channels = 2; 343 msg.u.config.samplerate = 48000; 344 msg.u.config.bps = 16; 345 error = vcaudio_msg_sync(sc, &msg, sizeof(msg)); 346 if (error) { 347 aprint_error_dev(sc->sc_dev, 348 "couldn't send CONFIG message (%d)\n", error); 349 } 350 351 memset(&msg, 0, sizeof(msg)); 352 msg.type = VC_AUDIO_MSG_TYPE_CONTROL; 353 msg.u.control.volume = vol2vc(sc->sc_hwvol[sc->sc_dest]); 354 msg.u.control.dest = sc->sc_dest; 355 error = vcaudio_msg_sync(sc, &msg, sizeof(msg)); 356 if (error) { 357 aprint_error_dev(sc->sc_dev, 358 "couldn't send CONTROL message (%d)\n", error); 359 } 360 361 vchi_service_release(sc->sc_service); 362 363 return 0; 364 } 365 366 static void 367 vcaudio_service_callback(void *priv, const VCHI_CALLBACK_REASON_T reason, 368 void *msg_handle) 369 { 370 struct vcaudio_softc *sc = priv; 371 VC_AUDIO_MSG_T msg; 372 int32_t msglen = 0; 373 int error; 374 void (*intr)(void *) = NULL; 375 void *intrarg = NULL; 376 377 if (sc == NULL || reason != VCHI_CALLBACK_MSG_AVAILABLE) 378 return; 379 380 memset(&msg, 0, sizeof(msg)); 381 error = vchi_msg_dequeue(sc->sc_service, &msg, sizeof(msg), &msglen, 382 VCHI_FLAGS_NONE); 383 if (error) { 384 device_printf(sc->sc_dev, "couldn't dequeue msg (%d)\n", 385 error); 386 return; 387 } 388 389 switch (msg.type) { 390 case VC_AUDIO_MSG_TYPE_RESULT: 391 mutex_enter(&sc->sc_msglock); 392 sc->sc_success = msg.u.result.success; 393 sc->sc_msgdone = true; 394 cv_broadcast(&sc->sc_msgcv); 395 mutex_exit(&sc->sc_msglock); 396 break; 397 398 case VC_AUDIO_MSG_TYPE_COMPLETE: 399 intr = msg.u.complete.callback; 400 intrarg = msg.u.complete.cookie; 401 if (intr && intrarg) { 402 int count = msg.u.complete.count & 0xffff; 403 int perr = (msg.u.complete.count & __BIT(30)) != 0; 404 bool sched = false; 405 406 mutex_enter(&sc->sc_intr_lock); 407 408 if (count > 0) { 409 sc->sc_pbytes += count; 410 } 411 if (perr && sc->sc_started) { 412 #ifdef VCAUDIO_DEBUG 413 device_printf(sc->sc_dev, "underrun\n"); 414 #endif 415 sched = true; 416 } 417 if (sc->sc_pbytes >= sc->sc_pblksize) { 418 sc->sc_pbytes -= sc->sc_pblksize; 419 sched = true; 420 } 421 422 if (sched && sc->sc_pint) { 423 intr(intrarg); 424 sc->sc_abytes += sc->sc_pblksize; 425 cv_signal(&sc->sc_datacv); 426 } 427 mutex_exit(&sc->sc_intr_lock); 428 } 429 break; 430 default: 431 break; 432 } 433 } 434 435 static void 436 vcaudio_worker(void *priv) 437 { 438 struct vcaudio_softc *sc = priv; 439 VC_AUDIO_MSG_T msg; 440 void (*intr)(void *); 441 void *intrarg; 442 void *block; 443 int error, resid, off, nb, count; 444 445 mutex_enter(&sc->sc_intr_lock); 446 447 while (true) { 448 intr = sc->sc_pint; 449 intrarg = sc->sc_pintarg; 450 451 if (intr == NULL || intrarg == NULL) { 452 cv_wait_sig(&sc->sc_datacv, &sc->sc_intr_lock); 453 continue; 454 } 455 456 KASSERT(sc->sc_pblksize != 0); 457 458 if (sc->sc_abytes < sc->sc_pblksize) { 459 cv_wait_sig(&sc->sc_datacv, &sc->sc_intr_lock); 460 continue; 461 } 462 count = sc->sc_pblksize; 463 464 memset(&msg, 0, sizeof(msg)); 465 msg.type = VC_AUDIO_MSG_TYPE_WRITE; 466 msg.u.write.max_packet = VCAUDIO_MSGSIZE; 467 msg.u.write.count = count; 468 msg.u.write.callback = intr; 469 msg.u.write.cookie = intrarg; 470 msg.u.write.silence = 0; 471 472 block = (uint8_t *)sc->sc_pstart + sc->sc_ppos; 473 resid = count; 474 off = 0; 475 476 vchi_service_use(sc->sc_service); 477 478 error = vchi_msg_queue(sc->sc_service, &msg, sizeof(msg), 479 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL); 480 if (error) { 481 printf("%s: failed to write (%d)\n", __func__, error); 482 goto done; 483 } 484 485 while (resid > 0) { 486 nb = uimin(resid, msg.u.write.max_packet); 487 error = vchi_msg_queue(sc->sc_service, 488 (char *)block + off, nb, 489 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL); 490 if (error) { 491 /* XXX What to do here? */ 492 device_printf(sc->sc_dev, 493 "failed to queue data (%d)\n", error); 494 goto done; 495 } 496 off += nb; 497 resid -= nb; 498 } 499 500 sc->sc_abytes -= count; 501 sc->sc_ppos += count; 502 if ((uint8_t *)sc->sc_pstart + sc->sc_ppos >= 503 (uint8_t *)sc->sc_pend) 504 sc->sc_ppos = 0; 505 506 if (!sc->sc_started) { 507 ++sc->sc_pblkcnt; 508 509 if (sc->sc_pblkcnt == VCAUDIO_PREFILLCOUNT) { 510 511 memset(&msg, 0, sizeof(msg)); 512 msg.type = VC_AUDIO_MSG_TYPE_START; 513 error = vchi_msg_queue(sc->sc_service, &msg, 514 sizeof(msg), VCHI_FLAGS_BLOCK_UNTIL_QUEUED, 515 NULL); 516 if (error) { 517 device_printf(sc->sc_dev, 518 "failed to start (%d)\n", error); 519 goto done; 520 } 521 sc->sc_started = true; 522 sc->sc_pbytes = 0; 523 } else { 524 intr(intrarg); 525 sc->sc_abytes += sc->sc_pblksize; 526 } 527 } 528 529 done: 530 vchi_service_release(sc->sc_service); 531 } 532 } 533 534 static int 535 vcaudio_msg_sync(struct vcaudio_softc *sc, VC_AUDIO_MSG_T *msg, size_t msglen) 536 { 537 int error = 0; 538 539 mutex_enter(&sc->sc_msglock); 540 541 sc->sc_success = -1; 542 sc->sc_msgdone = false; 543 544 error = vchi_msg_queue(sc->sc_service, msg, msglen, 545 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL); 546 if (error) { 547 printf("%s: failed to queue message (%d)\n", __func__, error); 548 goto done; 549 } 550 551 while (!sc->sc_msgdone) { 552 error = cv_wait_sig(&sc->sc_msgcv, &sc->sc_msglock); 553 if (error) 554 break; 555 } 556 if (sc->sc_success != 0) 557 error = EIO; 558 done: 559 mutex_exit(&sc->sc_msglock); 560 561 return error; 562 } 563 564 static int 565 vcaudio_query_format(void *priv, audio_format_query_t *afp) 566 { 567 struct vcaudio_softc *sc = priv; 568 569 return audio_query_format(&sc->sc_format, 1, afp); 570 } 571 572 static int 573 vcaudio_set_format(void *priv, int setmode, 574 const audio_params_t *play, const audio_params_t *rec, 575 audio_filter_reg_t *pfil, audio_filter_reg_t *rfil) 576 { 577 struct vcaudio_softc *sc = priv; 578 579 pfil->codec = vcaudio_swvol_codec; 580 pfil->context = sc; 581 582 return 0; 583 } 584 585 static int 586 vcaudio_halt_output(void *priv) 587 { 588 struct vcaudio_softc *sc = priv; 589 VC_AUDIO_MSG_T msg; 590 int error = 0; 591 592 KASSERT(mutex_owned(&sc->sc_intr_lock)); 593 594 vchi_service_use(sc->sc_service); 595 memset(&msg, 0, sizeof(msg)); 596 msg.type = VC_AUDIO_MSG_TYPE_STOP; 597 msg.u.stop.draining = 0; 598 error = vchi_msg_queue(sc->sc_service, &msg, sizeof(msg), 599 VCHI_FLAGS_BLOCK_UNTIL_QUEUED, NULL); 600 if (error) { 601 device_printf(sc->sc_dev, "couldn't send STOP message (%d)\n", 602 error); 603 } 604 vchi_service_release(sc->sc_service); 605 606 sc->sc_pint = NULL; 607 sc->sc_pintarg = NULL; 608 sc->sc_started = false; 609 610 #ifdef VCAUDIO_DEBUG 611 device_printf(sc->sc_dev, "halting output\n"); 612 #endif 613 614 return error; 615 } 616 617 static int 618 vcaudio_halt_input(void *priv) 619 { 620 return EINVAL; 621 } 622 623 static int 624 vcaudio_set_volume(struct vcaudio_softc *sc, enum vcaudio_dest dest, 625 int hwvol) 626 { 627 VC_AUDIO_MSG_T msg; 628 int error; 629 630 sc->sc_hwvol[dest] = hwvol; 631 if (dest != sc->sc_dest) 632 return 0; 633 634 vchi_service_use(sc->sc_service); 635 636 memset(&msg, 0, sizeof(msg)); 637 msg.type = VC_AUDIO_MSG_TYPE_CONTROL; 638 msg.u.control.volume = vol2vc(hwvol); 639 msg.u.control.dest = dest; 640 641 error = vcaudio_msg_sync(sc, &msg, sizeof(msg)); 642 if (error) { 643 device_printf(sc->sc_dev, 644 "couldn't send CONTROL message (%d)\n", error); 645 } 646 647 vchi_service_release(sc->sc_service); 648 649 return error; 650 } 651 652 static int 653 vcaudio_set_port(void *priv, mixer_ctrl_t *mc) 654 { 655 struct vcaudio_softc *sc = priv; 656 657 switch (mc->dev) { 658 case VCAUDIO_OUTPUT_MASTER_VOLUME: 659 case VCAUDIO_INPUT_DAC_VOLUME: 660 sc->sc_swvol = mc->un.value.level[AUDIO_MIXER_LEVEL_LEFT]; 661 return 0; 662 case VCAUDIO_OUTPUT_AUTO_VOLUME: 663 return vcaudio_set_volume(sc, VCAUDIO_DEST_AUTO, 664 mc->un.value.level[AUDIO_MIXER_LEVEL_LEFT]); 665 case VCAUDIO_OUTPUT_HEADPHONE_VOLUME: 666 return vcaudio_set_volume(sc, VCAUDIO_DEST_HP, 667 mc->un.value.level[AUDIO_MIXER_LEVEL_LEFT]); 668 case VCAUDIO_OUTPUT_HDMI_VOLUME: 669 return vcaudio_set_volume(sc, VCAUDIO_DEST_HDMI, 670 mc->un.value.level[AUDIO_MIXER_LEVEL_LEFT]); 671 case VCAUDIO_OUTPUT_SELECT: 672 if (mc->un.ord < 0 || mc->un.ord > 2) 673 return EINVAL; 674 sc->sc_dest = mc->un.ord; 675 return vcaudio_set_volume(sc, mc->un.ord, 676 sc->sc_hwvol[mc->un.ord]); 677 } 678 return ENXIO; 679 } 680 681 static int 682 vcaudio_get_port(void *priv, mixer_ctrl_t *mc) 683 { 684 struct vcaudio_softc *sc = priv; 685 686 switch (mc->dev) { 687 case VCAUDIO_OUTPUT_MASTER_VOLUME: 688 case VCAUDIO_INPUT_DAC_VOLUME: 689 mc->un.value.level[AUDIO_MIXER_LEVEL_LEFT] = 690 mc->un.value.level[AUDIO_MIXER_LEVEL_RIGHT] = 691 sc->sc_swvol; 692 return 0; 693 case VCAUDIO_OUTPUT_AUTO_VOLUME: 694 mc->un.value.level[AUDIO_MIXER_LEVEL_LEFT] = 695 mc->un.value.level[AUDIO_MIXER_LEVEL_RIGHT] = 696 sc->sc_hwvol[VCAUDIO_DEST_AUTO]; 697 return 0; 698 case VCAUDIO_OUTPUT_HEADPHONE_VOLUME: 699 mc->un.value.level[AUDIO_MIXER_LEVEL_LEFT] = 700 mc->un.value.level[AUDIO_MIXER_LEVEL_RIGHT] = 701 sc->sc_hwvol[VCAUDIO_DEST_HP]; 702 return 0; 703 case VCAUDIO_OUTPUT_HDMI_VOLUME: 704 mc->un.value.level[AUDIO_MIXER_LEVEL_LEFT] = 705 mc->un.value.level[AUDIO_MIXER_LEVEL_RIGHT] = 706 sc->sc_hwvol[VCAUDIO_DEST_HDMI]; 707 return 0; 708 case VCAUDIO_OUTPUT_SELECT: 709 mc->un.ord = sc->sc_dest; 710 return 0; 711 } 712 return ENXIO; 713 } 714 715 static int 716 vcaudio_query_devinfo(void *priv, mixer_devinfo_t *di) 717 { 718 switch (di->index) { 719 case VCAUDIO_OUTPUT_CLASS: 720 di->mixer_class = VCAUDIO_OUTPUT_CLASS; 721 strcpy(di->label.name, AudioCoutputs); 722 di->type = AUDIO_MIXER_CLASS; 723 di->next = di->prev = AUDIO_MIXER_LAST; 724 return 0; 725 case VCAUDIO_INPUT_CLASS: 726 di->mixer_class = VCAUDIO_INPUT_CLASS; 727 strcpy(di->label.name, AudioCinputs); 728 di->type = AUDIO_MIXER_CLASS; 729 di->next = di->prev = AUDIO_MIXER_LAST; 730 return 0; 731 case VCAUDIO_OUTPUT_MASTER_VOLUME: 732 di->mixer_class = VCAUDIO_OUTPUT_CLASS; 733 strcpy(di->label.name, AudioNmaster); 734 di->type = AUDIO_MIXER_VALUE; 735 di->next = di->prev = AUDIO_MIXER_LAST; 736 di->un.v.num_channels = 2; 737 strcpy(di->un.v.units.name, AudioNvolume); 738 return 0; 739 case VCAUDIO_OUTPUT_AUTO_VOLUME: 740 di->mixer_class = VCAUDIO_OUTPUT_CLASS; 741 strcpy(di->label.name, "auto"); 742 di->type = AUDIO_MIXER_VALUE; 743 di->next = di->prev = AUDIO_MIXER_LAST; 744 di->un.v.num_channels = 2; 745 di->un.v.delta = 13; 746 strcpy(di->un.v.units.name, AudioNvolume); 747 return 0; 748 case VCAUDIO_OUTPUT_HEADPHONE_VOLUME: 749 di->mixer_class = VCAUDIO_OUTPUT_CLASS; 750 strcpy(di->label.name, AudioNheadphone); 751 di->type = AUDIO_MIXER_VALUE; 752 di->next = di->prev = AUDIO_MIXER_LAST; 753 di->un.v.num_channels = 2; 754 di->un.v.delta = 13; 755 strcpy(di->un.v.units.name, AudioNvolume); 756 return 0; 757 case VCAUDIO_OUTPUT_HDMI_VOLUME: 758 di->mixer_class = VCAUDIO_OUTPUT_CLASS; 759 strcpy(di->label.name, "hdmi"); 760 di->type = AUDIO_MIXER_VALUE; 761 di->next = di->prev = AUDIO_MIXER_LAST; 762 di->un.v.num_channels = 2; 763 di->un.v.delta = 13; 764 strcpy(di->un.v.units.name, AudioNvolume); 765 return 0; 766 case VCAUDIO_INPUT_DAC_VOLUME: 767 di->mixer_class = VCAUDIO_INPUT_CLASS; 768 strcpy(di->label.name, AudioNdac); 769 di->type = AUDIO_MIXER_VALUE; 770 di->next = di->prev = AUDIO_MIXER_LAST; 771 di->un.v.num_channels = 2; 772 strcpy(di->un.v.units.name, AudioNvolume); 773 return 0; 774 case VCAUDIO_OUTPUT_SELECT: 775 di->mixer_class = VCAUDIO_OUTPUT_CLASS; 776 strcpy(di->label.name, AudioNselect); 777 di->type = AUDIO_MIXER_ENUM; 778 di->next = di->prev = AUDIO_MIXER_LAST; 779 di->un.e.num_mem = 3; 780 di->un.e.member[0].ord = 0; 781 strcpy(di->un.e.member[0].label.name, "auto"); 782 di->un.e.member[1].ord = 1; 783 strcpy(di->un.e.member[1].label.name, AudioNheadphone); 784 di->un.e.member[2].ord = 2; 785 strcpy(di->un.e.member[2].label.name, "hdmi"); 786 return 0; 787 } 788 789 return ENXIO; 790 } 791 792 static int 793 vcaudio_getdev(void *priv, struct audio_device *audiodev) 794 { 795 struct vcaudio_softc *sc = priv; 796 797 snprintf(audiodev->name, sizeof(audiodev->name), "vchiq auds"); 798 snprintf(audiodev->version, sizeof(audiodev->version), 799 "%d", sc->sc_peer_version); 800 snprintf(audiodev->config, sizeof(audiodev->config), "vcaudio"); 801 802 return 0; 803 } 804 805 static int 806 vcaudio_get_props(void *priv) 807 { 808 return AUDIO_PROP_PLAYBACK|AUDIO_PROP_CAPTURE|AUDIO_PROP_INDEPENDENT; 809 } 810 811 static int 812 vcaudio_round_blocksize(void *priv, int bs, int mode, 813 const audio_params_t *params) 814 { 815 return VCAUDIO_BLOCKSIZE; 816 } 817 818 static int 819 vcaudio_trigger_output(void *priv, void *start, void *end, int blksize, 820 void (*intr)(void *), void *intrarg, const audio_params_t *params) 821 { 822 struct vcaudio_softc *sc = priv; 823 824 ASSERT_SLEEPABLE(); 825 KASSERT(mutex_owned(&sc->sc_intr_lock)); 826 827 sc->sc_pparam = *params; 828 sc->sc_pint = intr; 829 sc->sc_pintarg = intrarg; 830 sc->sc_ppos = 0; 831 sc->sc_pstart = start; 832 sc->sc_pend = end; 833 sc->sc_pblksize = blksize; 834 sc->sc_pblkcnt = 0; 835 sc->sc_pbytes = 0; 836 sc->sc_abytes = blksize; 837 838 cv_signal(&sc->sc_datacv); 839 840 return 0; 841 } 842 843 static int 844 vcaudio_trigger_input(void *priv, void *start, void *end, int blksize, 845 void (*intr)(void *), void *intrarg, const audio_params_t *params) 846 { 847 return EINVAL; 848 } 849 850 static void 851 vcaudio_get_locks(void *priv, kmutex_t **intr, kmutex_t **thread) 852 { 853 struct vcaudio_softc *sc = priv; 854 855 *intr = &sc->sc_intr_lock; 856 *thread = &sc->sc_lock; 857 } 858 859 static void 860 vcaudio_swvol_codec(audio_filter_arg_t *arg) 861 { 862 struct vcaudio_softc *sc = arg->context; 863 const aint_t *src; 864 aint_t *dst; 865 u_int sample_count; 866 u_int i; 867 868 src = arg->src; 869 dst = arg->dst; 870 sample_count = arg->count * arg->srcfmt->channels; 871 for (i = 0; i < sample_count; i++) { 872 aint2_t v = (aint2_t)(*src++); 873 v = v * sc->sc_swvol / 255; 874 *dst++ = (aint_t)v; 875 } 876 } 877
Indexes created Fri Oct 17 23:09:53 GMT 2025