1 /* $NetBSD: aica.c,v 1.31 2024/02/07 04:20:27 msaitoh Exp $ */ 2 3 /* 4 * Copyright (c) 2003 SHIMIZU Ryo 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 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include <sys/cdefs.h> 32 __KERNEL_RCSID(0, "$NetBSD: aica.c,v 1.31 2024/02/07 04:20:27 msaitoh Exp $"); 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/device.h> 37 #include <sys/kernel.h> 38 #include <sys/proc.h> 39 #include <sys/audioio.h> 40 #include <sys/bus.h> 41 42 #include <dev/audio/audio_if.h> 43 #include <dev/audio/audiovar.h> /* AUDIO_MIN_FREQUENCY */ 44 45 #include <machine/sysasicvar.h> 46 47 #include <dreamcast/dev/g2/g2busvar.h> 48 #include <dreamcast/dev/g2/aicavar.h> 49 #include <dreamcast/dev/microcode/aica_armcode.h> 50 51 #define AICA_REG_ADDR 0x00700000 52 #define AICA_RAM_START 0x00800000 53 #define AICA_RAM_SIZE 0x00200000 54 #define AICA_NCHAN 64 55 #define AICA_TIMEOUT 0x1800 56 57 struct aica_softc { 58 device_t sc_dev; /* base device */ 59 kmutex_t sc_lock; 60 kmutex_t sc_intr_lock; 61 bus_space_tag_t sc_memt; 62 bus_space_handle_t sc_aica_regh; 63 bus_space_handle_t sc_aica_memh; 64 65 /* audio property */ 66 int sc_precision; 67 int sc_channels; 68 int sc_rate; 69 void (*sc_intr)(void *); 70 void *sc_intr_arg; 71 72 int sc_output_master; 73 int sc_output_gain[2]; 74 #define AICA_VOLUME_LEFT 0 75 #define AICA_VOLUME_RIGHT 1 76 77 /* work for output */ 78 void *sc_buffer; 79 void *sc_buffer_start; 80 void *sc_buffer_end; 81 int sc_blksize; 82 int sc_nextfill; 83 }; 84 85 static const struct audio_format aica_formats[] = { 86 { 87 .mode = AUMODE_PLAY, 88 .encoding = AUDIO_ENCODING_SLINEAR_LE, 89 .validbits = 16, 90 .precision = 16, 91 .channels = 2, 92 .channel_mask = AUFMT_STEREO, 93 .frequency_type = 0, 94 .frequency = { AUDIO_MIN_FREQUENCY, 65536 }, 95 }, 96 }; 97 #define AICA_NFORMATS __arraycount(aica_formats) 98 99 int aica_match(device_t, cfdata_t, void *); 100 void aica_attach(device_t, device_t, void *); 101 int aica_print(void *, const char *); 102 103 CFATTACH_DECL_NEW(aica, sizeof(struct aica_softc), aica_match, aica_attach, 104 NULL, NULL); 105 106 const struct audio_device aica_device = { 107 "Dreamcast Sound", 108 "", 109 "aica" 110 }; 111 112 inline static void aica_g2fifo_wait(void); 113 void aica_enable(struct aica_softc *); 114 void aica_disable(struct aica_softc *); 115 void aica_memwrite(struct aica_softc *, bus_size_t, uint32_t *, int); 116 void aica_ch2p16write(struct aica_softc *, bus_size_t, uint16_t *, int); 117 void aica_ch2p8write(struct aica_softc *, bus_size_t, uint8_t *, int); 118 void aica_command(struct aica_softc *, uint32_t); 119 void aica_sendparam(struct aica_softc *, uint32_t, int, int); 120 void aica_play(struct aica_softc *, int, int, int, int); 121 void aica_fillbuffer(struct aica_softc *); 122 123 /* intr */ 124 int aica_intr(void *); 125 126 /* for audio */ 127 int aica_query_format(void *, audio_format_query_t *); 128 int aica_set_format(void *, int, 129 const audio_params_t *, const audio_params_t *, 130 audio_filter_reg_t *, audio_filter_reg_t *); 131 int aica_round_blocksize(void *, int, int, const audio_params_t *); 132 size_t aica_round_buffersize(void *, int, size_t); 133 int aica_trigger_output(void *, void *, void *, int, void (*)(void *), void *, 134 const audio_params_t *); 135 int aica_halt_output(void *); 136 int aica_getdev(void *, struct audio_device *); 137 int aica_set_port(void *, mixer_ctrl_t *); 138 int aica_get_port(void *, mixer_ctrl_t *); 139 int aica_query_devinfo(void *, mixer_devinfo_t *); 140 void aica_encode(int, int, int, int, u_char *, u_short **); 141 int aica_get_props(void *); 142 void aica_get_locks(void *, kmutex_t **, kmutex_t **); 143 144 const struct audio_hw_if aica_hw_if = { 145 .query_format = aica_query_format, 146 .set_format = aica_set_format, 147 .round_blocksize = aica_round_blocksize, 148 .halt_output = aica_halt_output, 149 .getdev = aica_getdev, 150 .set_port = aica_set_port, 151 .get_port = aica_get_port, 152 .query_devinfo = aica_query_devinfo, 153 .round_buffersize = aica_round_buffersize, 154 .get_props = aica_get_props, 155 .trigger_output = aica_trigger_output, 156 .get_locks = aica_get_locks, 157 }; 158 159 int 160 aica_match(device_t parent, cfdata_t cf, void *aux) 161 { 162 static int aica_matched = 0; 163 164 if (aica_matched) 165 return 0; 166 167 aica_matched = 1; 168 return 1; 169 } 170 171 void 172 aica_attach(device_t parent, device_t self, void *aux) 173 { 174 struct aica_softc *sc; 175 struct g2bus_attach_args *ga; 176 int i; 177 178 sc = device_private(self); 179 ga = aux; 180 sc->sc_dev = self; 181 sc->sc_memt = ga->ga_memt; 182 183 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE); 184 mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_SCHED); 185 186 if (bus_space_map(sc->sc_memt, AICA_REG_ADDR, 0x3000, 0, 187 &sc->sc_aica_regh) != 0) { 188 aprint_error(": can't map AICA register space\n"); 189 return; 190 } 191 192 if (bus_space_map(sc->sc_memt, AICA_RAM_START, AICA_RAM_SIZE, 0, 193 &sc->sc_aica_memh) != 0) { 194 aprint_error(": can't map AICA memory space\n"); 195 return; 196 } 197 198 aprint_normal(": ARM7 Sound Processing Unit\n"); 199 200 aica_disable(sc); 201 202 for (i = 0; i < AICA_NCHAN; i++) 203 bus_space_write_4(sc->sc_memt,sc->sc_aica_regh, i << 7, 204 ((bus_space_read_4(sc->sc_memt, sc->sc_aica_regh, i << 7) 205 & ~0x4000) | 0x8000)); 206 207 /* load microcode, and clear memory */ 208 bus_space_set_region_4(sc->sc_memt, sc->sc_aica_memh, 209 0, 0, AICA_RAM_SIZE / 4); 210 211 aica_memwrite(sc, 0, aica_armcode, sizeof(aica_armcode)); 212 213 aica_enable(sc); 214 215 aprint_normal_dev(self, "interrupting at %s\n", 216 sysasic_intr_string(SYSASIC_IRL9)); 217 sysasic_intr_establish(SYSASIC_EVENT_AICA, IPL_BIO, SYSASIC_IRL9, 218 aica_intr, sc); 219 220 audio_attach_mi(&aica_hw_if, sc, self); 221 222 /* init parameters */ 223 sc->sc_output_master = 255; 224 sc->sc_output_gain[AICA_VOLUME_LEFT] = 255; 225 sc->sc_output_gain[AICA_VOLUME_RIGHT] = 255; 226 } 227 228 void 229 aica_enable(struct aica_softc *sc) 230 { 231 232 bus_space_write_4(sc->sc_memt, sc->sc_aica_regh, 0x28a8, 24); 233 bus_space_write_4(sc->sc_memt, sc->sc_aica_regh, 0x2c00, 234 bus_space_read_4(sc->sc_memt, sc->sc_aica_regh, 0x2c00) & ~1); 235 } 236 237 void 238 aica_disable(struct aica_softc *sc) 239 { 240 241 bus_space_write_4(sc->sc_memt, sc->sc_aica_regh, 0x2c00, 242 bus_space_read_4(sc->sc_memt, sc->sc_aica_regh, 0x2c00) | 1); 243 } 244 245 inline static void 246 aica_g2fifo_wait(void) 247 { 248 int i; 249 250 i = AICA_TIMEOUT; 251 while (--i > 0) 252 if ((*(volatile uint32_t *)0xa05f688c) & 0x11) 253 break; 254 } 255 256 void 257 aica_memwrite(struct aica_softc *sc, bus_size_t offset, uint32_t *src, int len) 258 { 259 int n; 260 261 KASSERT((offset & 3) == 0); 262 n = (len + 3) / 4; /* uint32_t * n (aligned) */ 263 264 aica_g2fifo_wait(); 265 bus_space_write_region_4(sc->sc_memt, sc->sc_aica_memh, 266 offset, src, n); 267 } 268 269 void 270 aica_ch2p16write(struct aica_softc *sc, bus_size_t offset, uint16_t *src, 271 int len) 272 { 273 union { 274 uint32_t w[8]; 275 uint16_t s[16]; 276 } buf; 277 uint16_t *p; 278 int i; 279 280 KASSERT((offset & 3) == 0); 281 282 while (len >= 32) { 283 p = buf.s; 284 *p++ = *src++; src++; 285 *p++ = *src++; src++; 286 *p++ = *src++; src++; 287 *p++ = *src++; src++; 288 *p++ = *src++; src++; 289 *p++ = *src++; src++; 290 *p++ = *src++; src++; 291 *p++ = *src++; src++; 292 *p++ = *src++; src++; 293 *p++ = *src++; src++; 294 *p++ = *src++; src++; 295 *p++ = *src++; src++; 296 *p++ = *src++; src++; 297 *p++ = *src++; src++; 298 *p++ = *src++; src++; 299 *p++ = *src++; src++; 300 301 aica_g2fifo_wait(); 302 bus_space_write_region_4(sc->sc_memt, sc->sc_aica_memh, 303 offset, buf.w , 32 / 4); 304 305 offset += sizeof(uint16_t) * 16; 306 len -= 32; 307 } 308 309 if (len / 2 > 0) { 310 p = buf.s; 311 for (i = 0; i < len / 2; i++) { 312 *p++ = *src++; src++; 313 } 314 315 aica_g2fifo_wait(); 316 bus_space_write_region_4(sc->sc_memt, sc->sc_aica_memh, 317 offset, buf.w, len / 4); 318 } 319 } 320 321 void 322 aica_ch2p8write(struct aica_softc *sc, bus_size_t offset, uint8_t *src, 323 int len) 324 { 325 uint32_t buf[8]; 326 uint8_t *p; 327 int i; 328 329 KASSERT((offset & 3) == 0); 330 while (len >= 32) { 331 p = (uint8_t *)buf; 332 333 *p++ = *src++; src++; 334 *p++ = *src++; src++; 335 *p++ = *src++; src++; 336 *p++ = *src++; src++; 337 *p++ = *src++; src++; 338 *p++ = *src++; src++; 339 *p++ = *src++; src++; 340 *p++ = *src++; src++; 341 *p++ = *src++; src++; 342 *p++ = *src++; src++; 343 *p++ = *src++; src++; 344 *p++ = *src++; src++; 345 *p++ = *src++; src++; 346 *p++ = *src++; src++; 347 *p++ = *src++; src++; 348 *p++ = *src++; src++; 349 *p++ = *src++; src++; 350 *p++ = *src++; src++; 351 *p++ = *src++; src++; 352 *p++ = *src++; src++; 353 *p++ = *src++; src++; 354 *p++ = *src++; src++; 355 *p++ = *src++; src++; 356 *p++ = *src++; src++; 357 *p++ = *src++; src++; 358 *p++ = *src++; src++; 359 *p++ = *src++; src++; 360 *p++ = *src++; src++; 361 *p++ = *src++; src++; 362 *p++ = *src++; src++; 363 *p++ = *src++; src++; 364 *p++ = *src++; src++; 365 366 aica_g2fifo_wait(); 367 bus_space_write_region_4(sc->sc_memt, sc->sc_aica_memh, 368 offset, buf, 32 / 4); 369 370 offset += 32; 371 len -= 32; 372 } 373 374 if (len) { 375 p = (uint8_t *)buf; 376 for (i = 0; i < len; i++) { 377 *p++ = *src++; src++; 378 } 379 380 aica_g2fifo_wait(); 381 bus_space_write_region_4(sc->sc_memt, sc->sc_aica_memh, 382 offset, buf, len / 4); 383 } 384 } 385 386 int 387 aica_query_format(void *addr, audio_format_query_t *afp) 388 { 389 390 return audio_query_format(aica_formats, AICA_NFORMATS, afp); 391 } 392 393 int 394 aica_set_format(void *addr, int setmode, 395 const audio_params_t *play, const audio_params_t *rec, 396 audio_filter_reg_t *pfil, audio_filter_reg_t *rfil) 397 { 398 struct aica_softc *sc; 399 400 sc = addr; 401 sc->sc_precision = play->precision; 402 sc->sc_channels = play->channels; 403 sc->sc_rate = play->sample_rate; 404 return 0; 405 } 406 407 int 408 aica_round_blocksize(void *addr, int blk, int mode, const audio_params_t *param) 409 { 410 #if 0 /* XXX this has not worked since kent-audio1 merge? */ 411 struct aica_softc *sc; 412 413 sc = addr; 414 switch (sc->sc_precision) { 415 case 4: 416 if (sc->sc_channels == 1) 417 return AICA_DMABUF_SIZE / 4; 418 else 419 return AICA_DMABUF_SIZE / 2; 420 break; 421 case 8: 422 if (sc->sc_channels == 1) 423 return AICA_DMABUF_SIZE / 2; 424 else 425 return AICA_DMABUF_SIZE; 426 break; 427 case 16: 428 if (sc->sc_channels == 1) 429 return AICA_DMABUF_SIZE; 430 else 431 return AICA_DMABUF_SIZE * 2; 432 break; 433 default: 434 break; 435 } 436 437 #endif 438 return AICA_DMABUF_SIZE / 4; 439 } 440 441 size_t 442 aica_round_buffersize(void *addr, int dir, size_t bufsize) 443 { 444 struct aica_softc *sc; 445 446 sc = addr; 447 if (bufsize > 65536 * sc->sc_channels) 448 return 65536 * sc->sc_channels; 449 return bufsize; 450 } 451 452 void 453 aica_command(struct aica_softc *sc, uint32_t command) 454 { 455 456 bus_space_write_4(sc->sc_memt, sc->sc_aica_memh, 457 AICA_ARM_CMD_COMMAND, command); 458 bus_space_write_4(sc->sc_memt,sc->sc_aica_memh, AICA_ARM_CMD_SERIAL, 459 bus_space_read_4(sc->sc_memt, sc->sc_aica_memh, 460 AICA_ARM_CMD_SERIAL) + 1); 461 } 462 463 void 464 aica_sendparam(struct aica_softc *sc, uint32_t command, 465 int32_t lparam, int32_t rparam) 466 { 467 468 bus_space_write_4(sc->sc_memt,sc->sc_aica_memh, 469 AICA_ARM_CMD_LPARAM, lparam); 470 bus_space_write_4(sc->sc_memt,sc->sc_aica_memh, 471 AICA_ARM_CMD_RPARAM, rparam); 472 473 aica_command(sc, command); 474 } 475 476 void 477 aica_play(struct aica_softc *sc, int blksize, int channel, int rate, int prec) 478 { 479 480 bus_space_write_4(sc->sc_memt,sc->sc_aica_memh, 481 AICA_ARM_CMD_BLOCKSIZE, blksize); 482 bus_space_write_4(sc->sc_memt,sc->sc_aica_memh, 483 AICA_ARM_CMD_CHANNEL, channel); 484 bus_space_write_4(sc->sc_memt,sc->sc_aica_memh, 485 AICA_ARM_CMD_RATE, rate); 486 bus_space_write_4(sc->sc_memt,sc->sc_aica_memh, 487 AICA_ARM_CMD_PRECISION, prec); 488 489 aica_command(sc, AICA_COMMAND_PLAY); 490 } 491 492 void 493 aica_fillbuffer(struct aica_softc *sc) 494 { 495 496 if (sc->sc_channels == 2) { 497 if (sc->sc_precision == 16) { 498 aica_ch2p16write(sc, 499 AICA_DMABUF_LEFT + sc->sc_nextfill, 500 (uint16_t *)sc->sc_buffer + 0, sc->sc_blksize / 2); 501 aica_ch2p16write(sc, 502 AICA_DMABUF_RIGHT + sc->sc_nextfill, 503 (uint16_t *)sc->sc_buffer + 1, sc->sc_blksize / 2); 504 } else if (sc->sc_precision == 8) { 505 aica_ch2p8write(sc, AICA_DMABUF_LEFT + sc->sc_nextfill, 506 (uint8_t *)sc->sc_buffer + 0, sc->sc_blksize / 2); 507 aica_ch2p8write(sc, AICA_DMABUF_RIGHT + sc->sc_nextfill, 508 (uint8_t *)sc->sc_buffer + 1, sc->sc_blksize / 2); 509 } 510 } else { 511 aica_memwrite(sc, AICA_DMABUF_MONO + sc->sc_nextfill, 512 sc->sc_buffer, sc->sc_blksize); 513 } 514 515 sc->sc_buffer = (int8_t *)sc->sc_buffer + sc->sc_blksize; 516 if (sc->sc_buffer >= sc->sc_buffer_end) 517 sc->sc_buffer = sc->sc_buffer_start; 518 519 sc->sc_nextfill ^= sc->sc_blksize / sc->sc_channels; 520 } 521 522 int 523 aica_intr(void *arg) 524 { 525 struct aica_softc *sc; 526 527 sc = arg; 528 529 mutex_spin_enter(&sc->sc_intr_lock); 530 531 aica_fillbuffer(sc); 532 533 /* call audio interrupt handler (audio_pintr()) */ 534 if (sc->sc_intr != NULL) { 535 (*(sc->sc_intr))(sc->sc_intr_arg); 536 } 537 538 /* clear SPU interrupt */ 539 bus_space_write_4(sc->sc_memt, sc->sc_aica_regh, 0x28bc, 0x20); 540 541 mutex_spin_exit(&sc->sc_intr_lock); 542 543 return 1; 544 } 545 546 int 547 aica_trigger_output(void *addr, void *start, void *end, int blksize, 548 void (*intr)(void *), void *arg, const audio_params_t *param) 549 { 550 struct aica_softc *sc; 551 552 sc = addr; 553 554 sc->sc_buffer_start = sc->sc_buffer = start; 555 sc->sc_buffer_end = end; 556 sc->sc_blksize = blksize; 557 sc->sc_nextfill = 0; 558 559 sc->sc_intr = intr; 560 sc->sc_intr_arg = arg; 561 562 /* 563 * The aica arm side driver uses a double buffer to play sounds. 564 * we need to fill two buffers before playing. 565 */ 566 aica_fillbuffer(sc); 567 aica_fillbuffer(sc); 568 569 /* ...and start playing */ 570 aica_play(sc, blksize / sc->sc_channels, sc->sc_channels, sc->sc_rate, 571 sc->sc_precision); 572 573 return 0; 574 } 575 576 int 577 aica_halt_output(void *addr) 578 { 579 struct aica_softc *sc; 580 581 sc = addr; 582 aica_command(sc, AICA_COMMAND_STOP); 583 sc->sc_intr = NULL; 584 return 0; 585 } 586 587 int 588 aica_getdev(void *addr, struct audio_device *ret) 589 { 590 591 *ret = aica_device; 592 return 0; 593 } 594 595 int 596 aica_set_port(void *addr, mixer_ctrl_t *mc) 597 { 598 struct aica_softc *sc; 599 600 sc = addr; 601 switch (mc->dev) { 602 case AICA_MASTER_VOL: 603 sc->sc_output_master = 604 mc->un.value.level[AUDIO_MIXER_LEVEL_MONO] & 0xff; 605 aica_sendparam(sc, AICA_COMMAND_MVOL, 606 sc->sc_output_master, sc->sc_output_master); 607 break; 608 case AICA_OUTPUT_GAIN: 609 sc->sc_output_gain[AICA_VOLUME_LEFT] = 610 mc->un.value.level[AUDIO_MIXER_LEVEL_LEFT] & 0xff; 611 sc->sc_output_gain[AICA_VOLUME_RIGHT] = 612 mc->un.value.level[AUDIO_MIXER_LEVEL_RIGHT] & 0xff; 613 aica_sendparam(sc, AICA_COMMAND_VOL, 614 sc->sc_output_gain[AICA_VOLUME_LEFT], 615 sc->sc_output_gain[AICA_VOLUME_RIGHT]); 616 break; 617 default: 618 return EINVAL; 619 } 620 621 return 0; 622 } 623 624 int 625 aica_get_port(void *addr, mixer_ctrl_t *mc) 626 { 627 struct aica_softc *sc; 628 629 sc = addr; 630 switch (mc->dev) { 631 case AICA_MASTER_VOL: 632 if (mc->un.value.num_channels != 1) 633 return EINVAL; 634 mc->un.value.level[AUDIO_MIXER_LEVEL_MONO] = 635 L16TO256(L256TO16(sc->sc_output_master)); 636 break; 637 case AICA_OUTPUT_GAIN: 638 mc->un.value.level[AUDIO_MIXER_LEVEL_LEFT] = 639 sc->sc_output_gain[AICA_VOLUME_LEFT]; 640 mc->un.value.level[AUDIO_MIXER_LEVEL_RIGHT] = 641 sc->sc_output_gain[AICA_VOLUME_RIGHT]; 642 break; 643 default: 644 return EINVAL; 645 } 646 return 0; 647 } 648 649 int 650 aica_query_devinfo(void *addr, mixer_devinfo_t *md) 651 { 652 653 switch (md->index) { 654 case AICA_MASTER_VOL: 655 md->type = AUDIO_MIXER_VALUE; 656 md->mixer_class = AICA_OUTPUT_CLASS; 657 md->prev = md->next = AUDIO_MIXER_LAST; 658 strcpy(md->label.name, AudioNmaster); 659 md->un.v.num_channels = 1; 660 strcpy(md->un.v.units.name, AudioNvolume); 661 return 0; 662 case AICA_OUTPUT_GAIN: 663 md->type = AUDIO_MIXER_VALUE; 664 md->mixer_class = AICA_OUTPUT_CLASS; 665 md->prev = md->next = AUDIO_MIXER_LAST; 666 strcpy(md->label.name, AudioNoutput); 667 md->un.v.num_channels = 2; 668 strcpy(md->label.name, AudioNvolume); 669 return 0; 670 case AICA_OUTPUT_CLASS: 671 md->type = AUDIO_MIXER_CLASS; 672 md->mixer_class = AICA_OUTPUT_CLASS; 673 md->next = md->prev = AUDIO_MIXER_LAST; 674 strcpy(md->label.name, AudioCoutputs); 675 return 0; 676 } 677 678 return ENXIO; 679 } 680 681 int 682 aica_get_props(void *addr) 683 { 684 685 return AUDIO_PROP_PLAYBACK; 686 } 687 688 void 689 aica_get_locks(void *addr, kmutex_t **intr, kmutex_t **thread) 690 { 691 struct aica_softc *sc; 692 693 sc = addr; 694 *intr = &sc->sc_intr_lock; 695 *thread = &sc->sc_lock; 696 } 697
Indexes created Tue Sep 23 07:09:52 GMT 2025