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cs4231.c revision 1.30
      1 /*	$NetBSD: cs4231.c,v 1.30 2019/05/08 13:40:18 isaki Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Paul Kranenburg.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: cs4231.c,v 1.30 2019/05/08 13:40:18 isaki Exp $");
     34 
     35 #include "audio.h"
     36 #if NAUDIO > 0
     37 
     38 #include <sys/param.h>
     39 #include <sys/systm.h>
     40 #include <sys/errno.h>
     41 #include <sys/device.h>
     42 #include <sys/bus.h>
     43 #include <sys/kmem.h>
     44 #include <sys/malloc.h>
     45 
     46 #include <machine/autoconf.h>
     47 #include <sys/cpu.h>
     48 
     49 #include <sys/audioio.h>
     50 #include <dev/audio/audio_if.h>
     51 
     52 #include <dev/ic/ad1848reg.h>
     53 #include <dev/ic/cs4231reg.h>
     54 #include <dev/ic/ad1848var.h>
     55 #include <dev/ic/cs4231var.h>
     56 
     57 /*---*/
     58 #define CSAUDIO_DAC_LVL		0
     59 #define CSAUDIO_LINE_IN_LVL	1
     60 #define CSAUDIO_MONO_LVL	2
     61 #define CSAUDIO_CD_LVL		3
     62 #define CSAUDIO_OUTPUT_LVL	4
     63 #define CSAUDIO_OUT_LVL		5
     64 #define CSAUDIO_LINE_IN_MUTE	6
     65 #define CSAUDIO_DAC_MUTE	7
     66 #define CSAUDIO_CD_MUTE		8
     67 #define CSAUDIO_MONO_MUTE	9
     68 #define CSAUDIO_OUTPUT_MUTE	10
     69 #define CSAUDIO_OUT_MUTE	11
     70 #define CSAUDIO_REC_LVL		12
     71 #define CSAUDIO_RECORD_SOURCE	13
     72 
     73 #define CSAUDIO_INPUT_CLASS	14
     74 #define CSAUDIO_MONITOR_CLASS	15
     75 #define CSAUDIO_RECORD_CLASS	16
     76 
     77 #ifdef AUDIO_DEBUG
     78 int     cs4231_debug = 0;
     79 #define DPRINTF(x)      if (cs4231_debug) printf x
     80 #else
     81 #define DPRINTF(x)
     82 #endif
     83 
     84 struct audio_device cs4231_device = {
     85 	"cs4231",
     86 	"x",
     87 	"audio"
     88 };
     89 
     90 
     91 /* ad1848 sc_{read,write}reg */
     92 static int	cs4231_read(struct ad1848_softc *, int);
     93 static void	cs4231_write(struct ad1848_softc *, int, int);
     94 
     95 int
     96 cs4231_read(struct ad1848_softc	*sc, int index)
     97 {
     98 
     99 	return bus_space_read_1(sc->sc_iot, sc->sc_ioh, (index << 2));
    100 }
    101 
    102 void
    103 cs4231_write(struct ad1848_softc *sc, int index, int value)
    104 {
    105 
    106 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, (index << 2), value);
    107 }
    108 
    109 
    110 void
    111 cs4231_common_attach(struct cs4231_softc *sc, device_t self,
    112     bus_space_handle_t ioh)
    113 {
    114 	char *buf;
    115 	int reg;
    116 
    117 	sc->sc_ad1848.parent = sc;
    118 	sc->sc_ad1848.sc_dev = self;
    119 	sc->sc_ad1848.sc_iot = sc->sc_bustag;
    120 	sc->sc_ad1848.sc_ioh = ioh;
    121 	sc->sc_ad1848.sc_readreg = cs4231_read;
    122 	sc->sc_ad1848.sc_writereg = cs4231_write;
    123 
    124 	sc->sc_playback.t_name = "playback";
    125 	sc->sc_capture.t_name = "capture";
    126 
    127 	evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR,
    128 			     NULL,
    129 			     device_xname(sc->sc_ad1848.sc_dev), "total");
    130 
    131 	evcnt_attach_dynamic(&sc->sc_playback.t_intrcnt, EVCNT_TYPE_INTR,
    132 			     &sc->sc_intrcnt,
    133 			     device_xname(sc->sc_ad1848.sc_dev), "playback");
    134 
    135 	evcnt_attach_dynamic(&sc->sc_playback.t_ierrcnt, EVCNT_TYPE_INTR,
    136 			     &sc->sc_intrcnt,
    137 			     device_xname(sc->sc_ad1848.sc_dev), "perrors");
    138 
    139 	evcnt_attach_dynamic(&sc->sc_capture.t_intrcnt, EVCNT_TYPE_INTR,
    140 			     &sc->sc_intrcnt,
    141 			     device_xname(sc->sc_ad1848.sc_dev), "capture");
    142 
    143 	evcnt_attach_dynamic(&sc->sc_capture.t_ierrcnt, EVCNT_TYPE_INTR,
    144 			     &sc->sc_intrcnt,
    145 			     device_xname(sc->sc_ad1848.sc_dev), "cerrors");
    146 
    147 	/* put chip in native mode to access (extended) ID register */
    148 	reg = ad_read(&sc->sc_ad1848, SP_MISC_INFO);
    149 	ad_write(&sc->sc_ad1848, SP_MISC_INFO, reg | MODE2);
    150 
    151 	/* read version numbers from I25 */
    152 	reg = ad_read(&sc->sc_ad1848, CS_VERSION_ID);
    153 	switch (reg & (CS_VERSION_NUMBER | CS_VERSION_CHIPID)) {
    154 	case 0xa0:
    155 		sc->sc_ad1848.chip_name = "CS4231A";
    156 		break;
    157 	case 0x80:
    158 		sc->sc_ad1848.chip_name = "CS4231";
    159 		break;
    160 	case 0x82:
    161 		sc->sc_ad1848.chip_name = "CS4232";
    162 		break;
    163 	case 0xa2:
    164 		sc->sc_ad1848.chip_name = "CS4232C";
    165 		break;
    166 	default:
    167 		if ((buf = malloc(32, M_TEMP, M_NOWAIT)) != NULL) {
    168 			snprintf(buf, 32, "unknown rev: %x/%x",
    169 			    reg&0xe0, reg&7);
    170 			sc->sc_ad1848.chip_name = buf;
    171 		}
    172 	}
    173 
    174 	sc->sc_ad1848.mode = 2;	/* put ad1848 driver in `MODE 2' mode */
    175 	ad1848_attach(&sc->sc_ad1848);
    176 }
    177 
    178 void *
    179 cs4231_malloc(void *addr, int direction, size_t size)
    180 {
    181 	struct cs4231_softc *sc;
    182 	bus_dma_tag_t dmatag;
    183 	struct cs_dma *p;
    184 
    185 	sc = addr;
    186 	dmatag = sc->sc_dmatag;
    187 	p = kmem_alloc(sizeof(*p), KM_SLEEP);
    188 
    189 	/* Allocate a DMA map */
    190 	if (bus_dmamap_create(dmatag, size, 1, size, 0,
    191 	    BUS_DMA_NOWAIT, &p->dmamap) != 0)
    192 		goto fail1;
    193 
    194 	/* Allocate DMA memory */
    195 	p->size = size;
    196 	if (bus_dmamem_alloc(dmatag, size, 64*1024, 0,
    197 	    p->segs, sizeof(p->segs)/sizeof(p->segs[0]),
    198 	    &p->nsegs, BUS_DMA_NOWAIT) != 0)
    199 		goto fail2;
    200 
    201 	/* Map DMA memory into kernel space */
    202 	if (bus_dmamem_map(dmatag, p->segs, p->nsegs, p->size,
    203 	    &p->addr, BUS_DMA_NOWAIT|BUS_DMA_COHERENT) != 0)
    204 		goto fail3;
    205 
    206 	/* Load the buffer */
    207 	if (bus_dmamap_load(dmatag, p->dmamap,
    208 	    p->addr, size, NULL, BUS_DMA_NOWAIT) != 0)
    209 		goto fail4;
    210 
    211 	p->next = sc->sc_dmas;
    212 	sc->sc_dmas = p;
    213 	return p->addr;
    214 
    215 fail4:
    216 	bus_dmamem_unmap(dmatag, p->addr, p->size);
    217 fail3:
    218 	bus_dmamem_free(dmatag, p->segs, p->nsegs);
    219 fail2:
    220 	bus_dmamap_destroy(dmatag, p->dmamap);
    221 fail1:
    222 	kmem_free(p, sizeof(*p));
    223 	return NULL;
    224 }
    225 
    226 void
    227 cs4231_free(void *addr, void *ptr, size_t size)
    228 {
    229 	struct cs4231_softc *sc;
    230 	bus_dma_tag_t dmatag;
    231 	struct cs_dma *p, **pp;
    232 
    233 	sc = addr;
    234 	dmatag = sc->sc_dmatag;
    235 	for (pp = &sc->sc_dmas; (p = *pp) != NULL; pp = &(*pp)->next) {
    236 		if (p->addr != ptr)
    237 			continue;
    238 		bus_dmamap_unload(dmatag, p->dmamap);
    239 		bus_dmamem_unmap(dmatag, p->addr, p->size);
    240 		bus_dmamem_free(dmatag, p->segs, p->nsegs);
    241 		bus_dmamap_destroy(dmatag, p->dmamap);
    242 		*pp = p->next;
    243 		kmem_free(p, sizeof(*p));
    244 		return;
    245 	}
    246 	printf("cs4231_free: rogue pointer\n");
    247 }
    248 
    249 
    250 /*
    251  * Set up transfer and return DMA address and byte count in paddr and psize
    252  * for bus dependent trigger_{in,out}put to load into the DMA controller.
    253  */
    254 int
    255 cs4231_transfer_init(
    256 	struct cs4231_softc *sc,
    257 	struct cs_transfer *t,
    258 	bus_addr_t *paddr,
    259 	bus_size_t *psize,
    260 	void *start, void *end,
    261 	int blksize,
    262 	void (*intr)(void *),
    263 	void *arg)
    264 {
    265 	struct cs_dma *p;
    266 	vsize_t n;
    267 
    268 	if (t->t_active) {
    269 		printf("%s: %s already running\n",
    270 		       device_xname(sc->sc_ad1848.sc_dev), t->t_name);
    271 		return EINVAL;
    272 	}
    273 
    274 	t->t_intr = intr;
    275 	t->t_arg = arg;
    276 
    277 	for (p = sc->sc_dmas; p != NULL && p->addr != start; p = p->next)
    278 		continue;
    279 	if (p == NULL) {
    280 		printf("%s: bad %s addr %p\n",
    281 		       device_xname(sc->sc_ad1848.sc_dev), t->t_name, start);
    282 		return EINVAL;
    283 	}
    284 
    285 	n = (char *)end - (char *)start;
    286 
    287 	t->t_dma = p;		/* the DMA memory segment */
    288 	t->t_segsz = n;		/* size of DMA segment */
    289 	t->t_blksz = blksize;	/* do transfers in blksize chunks */
    290 
    291 	if (n > t->t_blksz)
    292 		n = t->t_blksz;
    293 
    294 	t->t_cnt = n;
    295 
    296 	/* for caller to load into DMA controller */
    297 	*paddr = t->t_dma->dmamap->dm_segs[0].ds_addr;
    298 	*psize = n;
    299 
    300 	DPRINTF(("%s: init %s: [%p..%p] %lu bytes %lu blocks;"
    301 		 " DMA at 0x%lx count %lu\n",
    302 		 device_xname(sc->sc_ad1848.sc_dev), t->t_name,
    303 		 start, end, (u_long)t->t_segsz, (u_long)t->t_blksz,
    304 		 (u_long)*paddr, (u_long)*psize));
    305 
    306 	t->t_active = 1;
    307 	return 0;
    308 }
    309 
    310 /*
    311  * Compute next DMA address/counter, update transfer status.
    312  */
    313 void
    314 cs4231_transfer_advance(struct cs_transfer *t, bus_addr_t *paddr,
    315     bus_size_t *psize)
    316 {
    317 	bus_addr_t dmabase, nextaddr;
    318 	bus_size_t togo;
    319 
    320 	dmabase = t->t_dma->dmamap->dm_segs[0].ds_addr;
    321 
    322 	togo = t->t_segsz - t->t_cnt;
    323 	if (togo == 0) {	/* roll over */
    324 		nextaddr = dmabase;
    325 		t->t_cnt = togo = t->t_blksz;
    326 	} else {
    327 		nextaddr = dmabase + t->t_cnt;
    328 		if (togo > t->t_blksz)
    329 			togo = t->t_blksz;
    330 		t->t_cnt += togo;
    331 	}
    332 
    333 	/* for caller to load into DMA controller */
    334 	*paddr = nextaddr;
    335 	*psize = togo;
    336 }
    337 
    338 
    339 int
    340 cs4231_open(void *addr, int flags)
    341 {
    342 	struct cs4231_softc *sc;
    343 
    344 	sc = addr;
    345 	DPRINTF(("sa_open: unit %p\n", sc));
    346 
    347 	sc->sc_playback.t_active = 0;
    348 	sc->sc_playback.t_intr = NULL;
    349 	sc->sc_playback.t_arg = NULL;
    350 
    351 	sc->sc_capture.t_active = 0;
    352 	sc->sc_capture.t_intr = NULL;
    353 	sc->sc_capture.t_arg = NULL;
    354 
    355 	/* no interrupts from ad1848 */
    356 	ad_write(&sc->sc_ad1848, SP_PIN_CONTROL, 0);
    357 	ad1848_reset(&sc->sc_ad1848);
    358 
    359 	DPRINTF(("sa_open: ok -> sc=%p\n", sc));
    360 	return 0;
    361 }
    362 
    363 void
    364 cs4231_close(void *addr)
    365 {
    366 
    367 	DPRINTF(("sa_close: sc=%p\n", addr));
    368 
    369 	/* audio(9) already called halt methods */
    370 
    371 	DPRINTF(("sa_close: closed.\n"));
    372 }
    373 
    374 int
    375 cs4231_getdev(void *addr, struct audio_device *retp)
    376 {
    377 
    378 	*retp = cs4231_device;
    379 	return 0;
    380 }
    381 
    382 static const ad1848_devmap_t csmapping[] = {
    383 	{ CSAUDIO_DAC_LVL, AD1848_KIND_LVL, AD1848_AUX1_CHANNEL },
    384 	{ CSAUDIO_LINE_IN_LVL, AD1848_KIND_LVL, AD1848_LINE_CHANNEL },
    385 	{ CSAUDIO_MONO_LVL, AD1848_KIND_LVL, AD1848_MONO_CHANNEL },
    386 	{ CSAUDIO_CD_LVL, AD1848_KIND_LVL, AD1848_AUX2_CHANNEL },
    387 	{ CSAUDIO_OUTPUT_LVL, AD1848_KIND_LVL, AD1848_MONITOR_CHANNEL },
    388 	{ CSAUDIO_OUT_LVL, AD1848_KIND_LVL, AD1848_DAC_CHANNEL },
    389 	{ CSAUDIO_DAC_MUTE, AD1848_KIND_MUTE, AD1848_AUX1_CHANNEL },
    390 	{ CSAUDIO_LINE_IN_MUTE, AD1848_KIND_MUTE, AD1848_LINE_CHANNEL },
    391 	{ CSAUDIO_MONO_MUTE, AD1848_KIND_MUTE, AD1848_MONO_CHANNEL },
    392 	{ CSAUDIO_CD_MUTE, AD1848_KIND_MUTE, AD1848_AUX2_CHANNEL },
    393 	{ CSAUDIO_OUTPUT_MUTE, AD1848_KIND_MUTE, AD1848_MONITOR_CHANNEL },
    394 	{ CSAUDIO_OUT_MUTE, AD1848_KIND_MUTE, AD1848_OUT_CHANNEL },
    395 	{ CSAUDIO_REC_LVL, AD1848_KIND_RECORDGAIN, -1 },
    396 	{ CSAUDIO_RECORD_SOURCE, AD1848_KIND_RECORDSOURCE, -1 }
    397 };
    398 
    399 static int nummap = sizeof(csmapping) / sizeof(csmapping[0]);
    400 
    401 
    402 int
    403 cs4231_set_port(void *addr, mixer_ctrl_t *cp)
    404 {
    405 	struct ad1848_softc *ac;
    406 
    407 	DPRINTF(("cs4231_set_port: port=%d", cp->dev));
    408 	ac = addr;
    409 	return ad1848_mixer_set_port(ac, csmapping, nummap, cp);
    410 }
    411 
    412 int
    413 cs4231_get_port(void *addr, mixer_ctrl_t *cp)
    414 {
    415 	struct ad1848_softc *ac;
    416 
    417 	DPRINTF(("cs4231_get_port: port=%d", cp->dev));
    418 	ac = addr;
    419 	return ad1848_mixer_get_port(ac, csmapping, nummap, cp);
    420 }
    421 
    422 int
    423 cs4231_get_props(void *addr)
    424 {
    425 
    426 	return AUDIO_PROP_FULLDUPLEX;
    427 }
    428 
    429 int
    430 cs4231_query_devinfo(void *addr, mixer_devinfo_t *dip)
    431 {
    432 
    433 	switch(dip->index) {
    434 
    435 	case CSAUDIO_DAC_LVL:		/*  dacout */
    436 		dip->type = AUDIO_MIXER_VALUE;
    437 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
    438 		dip->prev = AUDIO_MIXER_LAST;
    439 		dip->next = CSAUDIO_DAC_MUTE;
    440 		strcpy(dip->label.name, AudioNdac);
    441 		dip->un.v.num_channels = 2;
    442 		strcpy(dip->un.v.units.name, AudioNvolume);
    443 		break;
    444 
    445 	case CSAUDIO_LINE_IN_LVL:	/* line */
    446 		dip->type = AUDIO_MIXER_VALUE;
    447 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
    448 		dip->prev = AUDIO_MIXER_LAST;
    449 		dip->next = CSAUDIO_LINE_IN_MUTE;
    450 		strcpy(dip->label.name, AudioNline);
    451 		dip->un.v.num_channels = 2;
    452 		strcpy(dip->un.v.units.name, AudioNvolume);
    453 		break;
    454 
    455 	case CSAUDIO_MONO_LVL:	/* mono/microphone mixer */
    456 		dip->type = AUDIO_MIXER_VALUE;
    457 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
    458 		dip->prev = AUDIO_MIXER_LAST;
    459 		dip->next = CSAUDIO_MONO_MUTE;
    460 		strcpy(dip->label.name, AudioNmicrophone);
    461 		dip->un.v.num_channels = 1;
    462 		strcpy(dip->un.v.units.name, AudioNvolume);
    463 		break;
    464 
    465 	case CSAUDIO_CD_LVL:		/* cd */
    466 		dip->type = AUDIO_MIXER_VALUE;
    467 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
    468 		dip->prev = AUDIO_MIXER_LAST;
    469 		dip->next = CSAUDIO_CD_MUTE;
    470 		strcpy(dip->label.name, AudioNcd);
    471 		dip->un.v.num_channels = 2;
    472 		strcpy(dip->un.v.units.name, AudioNvolume);
    473 		break;
    474 
    475 
    476 	case CSAUDIO_OUTPUT_LVL:	/* monitor level */
    477 		dip->type = AUDIO_MIXER_VALUE;
    478 		dip->mixer_class = CSAUDIO_MONITOR_CLASS;
    479 		dip->next = CSAUDIO_OUTPUT_MUTE;
    480 		dip->prev = AUDIO_MIXER_LAST;
    481 		strcpy(dip->label.name, AudioNmonitor);
    482 		dip->un.v.num_channels = 1;
    483 		strcpy(dip->un.v.units.name, AudioNvolume);
    484 		break;
    485 
    486 	case CSAUDIO_OUT_LVL:		/* cs4231 output volume */
    487 		dip->type = AUDIO_MIXER_VALUE;
    488 		dip->mixer_class = CSAUDIO_MONITOR_CLASS;
    489 		dip->next = dip->prev = AUDIO_MIXER_LAST;
    490 		strcpy(dip->label.name, AudioNmaster);
    491 		dip->un.v.num_channels = 2;
    492 		dip->un.v.delta = 16;
    493 		strcpy(dip->un.v.units.name, AudioNvolume);
    494 		break;
    495 
    496 	case CSAUDIO_OUT_MUTE: /* mute built-in speaker */
    497 		dip->mixer_class = CSAUDIO_MONITOR_CLASS;
    498 		dip->type = AUDIO_MIXER_ENUM;
    499 		dip->prev = CSAUDIO_MONITOR_CLASS;
    500 		dip->next = AUDIO_MIXER_LAST;
    501 		strcpy(dip->label.name, AudioNmono);
    502 		/* names reversed, this is a "mute" value used as "mono enabled" */
    503 		dip->un.e.num_mem = 2;
    504 		strcpy(dip->un.e.member[0].label.name, AudioNon);
    505 		dip->un.e.member[0].ord = 0;
    506 		strcpy(dip->un.e.member[1].label.name, AudioNoff);
    507 		dip->un.e.member[1].ord = 1;
    508 		break;
    509 
    510 	case CSAUDIO_LINE_IN_MUTE:
    511 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
    512 		dip->type = AUDIO_MIXER_ENUM;
    513 		dip->prev = CSAUDIO_LINE_IN_LVL;
    514 		dip->next = AUDIO_MIXER_LAST;
    515 		goto mute;
    516 
    517 	case CSAUDIO_DAC_MUTE:
    518 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
    519 		dip->type = AUDIO_MIXER_ENUM;
    520 		dip->prev = CSAUDIO_DAC_LVL;
    521 		dip->next = AUDIO_MIXER_LAST;
    522 		goto mute;
    523 
    524 	case CSAUDIO_CD_MUTE:
    525 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
    526 		dip->type = AUDIO_MIXER_ENUM;
    527 		dip->prev = CSAUDIO_CD_LVL;
    528 		dip->next = AUDIO_MIXER_LAST;
    529 		goto mute;
    530 
    531 	case CSAUDIO_MONO_MUTE:
    532 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
    533 		dip->type = AUDIO_MIXER_ENUM;
    534 		dip->prev = CSAUDIO_MONO_LVL;
    535 		dip->next = AUDIO_MIXER_LAST;
    536 		goto mute;
    537 
    538 	case CSAUDIO_OUTPUT_MUTE:
    539 		dip->mixer_class = CSAUDIO_MONITOR_CLASS;
    540 		dip->type = AUDIO_MIXER_ENUM;
    541 		dip->prev = CSAUDIO_OUTPUT_LVL;
    542 		dip->next = AUDIO_MIXER_LAST;
    543 	mute:
    544 		strcpy(dip->label.name, AudioNmute);
    545 		dip->un.e.num_mem = 2;
    546 		strcpy(dip->un.e.member[0].label.name, AudioNoff);
    547 		dip->un.e.member[0].ord = 0;
    548 		strcpy(dip->un.e.member[1].label.name, AudioNon);
    549 		dip->un.e.member[1].ord = 1;
    550 		break;
    551 
    552 	case CSAUDIO_REC_LVL:	/* record level */
    553 		dip->type = AUDIO_MIXER_VALUE;
    554 		dip->mixer_class = CSAUDIO_RECORD_CLASS;
    555 		dip->prev = AUDIO_MIXER_LAST;
    556 		dip->next = CSAUDIO_RECORD_SOURCE;
    557 		strcpy(dip->label.name, AudioNrecord);
    558 		dip->un.v.num_channels = 2;
    559 		strcpy(dip->un.v.units.name, AudioNvolume);
    560 		break;
    561 
    562 	case CSAUDIO_RECORD_SOURCE:
    563 		dip->mixer_class = CSAUDIO_RECORD_CLASS;
    564 		dip->type = AUDIO_MIXER_ENUM;
    565 		dip->prev = CSAUDIO_REC_LVL;
    566 		dip->next = AUDIO_MIXER_LAST;
    567 		strcpy(dip->label.name, AudioNsource);
    568 		dip->un.e.num_mem = 4;
    569 		strcpy(dip->un.e.member[0].label.name, AudioNoutput);
    570 		dip->un.e.member[0].ord = DAC_IN_PORT;
    571 		strcpy(dip->un.e.member[1].label.name, AudioNmicrophone);
    572 		dip->un.e.member[1].ord = MIC_IN_PORT;
    573 		strcpy(dip->un.e.member[2].label.name, AudioNdac);
    574 		dip->un.e.member[2].ord = AUX1_IN_PORT;
    575 		strcpy(dip->un.e.member[3].label.name, AudioNline);
    576 		dip->un.e.member[3].ord = LINE_IN_PORT;
    577 		break;
    578 
    579 	case CSAUDIO_INPUT_CLASS:		/* input class descriptor */
    580 		dip->type = AUDIO_MIXER_CLASS;
    581 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
    582 		dip->next = dip->prev = AUDIO_MIXER_LAST;
    583 		strcpy(dip->label.name, AudioCinputs);
    584 		break;
    585 
    586 	case CSAUDIO_MONITOR_CLASS:		/* output class descriptor */
    587 		dip->type = AUDIO_MIXER_CLASS;
    588 		dip->mixer_class = CSAUDIO_MONITOR_CLASS;
    589 		dip->next = dip->prev = AUDIO_MIXER_LAST;
    590 		strcpy(dip->label.name, AudioCoutputs);
    591 		break;
    592 
    593 	case CSAUDIO_RECORD_CLASS:		/* record source class */
    594 		dip->type = AUDIO_MIXER_CLASS;
    595 		dip->mixer_class = CSAUDIO_RECORD_CLASS;
    596 		dip->next = dip->prev = AUDIO_MIXER_LAST;
    597 		strcpy(dip->label.name, AudioCrecord);
    598 		break;
    599 
    600 	default:
    601 		return ENXIO;
    602 		/*NOTREACHED*/
    603 	}
    604 	DPRINTF(("AUDIO_MIXER_DEVINFO: name=%s\n", dip->label.name));
    605 
    606 	return 0;
    607 }
    608 
    609 #endif /* NAUDIO > 0 */
    610