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cs4231.c revision 1.10
      1 /*	$NetBSD: cs4231.c,v 1.10 2002/08/22 20:42:22 martin 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  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include <sys/cdefs.h>
     40 __KERNEL_RCSID(0, "$NetBSD: cs4231.c,v 1.10 2002/08/22 20:42:22 martin Exp $");
     41 
     42 #include "audio.h"
     43 #if NAUDIO > 0
     44 
     45 #include <sys/param.h>
     46 #include <sys/systm.h>
     47 #include <sys/errno.h>
     48 #include <sys/device.h>
     49 #include <sys/malloc.h>
     50 
     51 #include <machine/autoconf.h>
     52 #include <machine/cpu.h>
     53 
     54 #include <sys/audioio.h>
     55 #include <dev/audio_if.h>
     56 
     57 #include <dev/ic/ad1848reg.h>
     58 #include <dev/ic/cs4231reg.h>
     59 #include <dev/ic/ad1848var.h>
     60 #include <dev/ic/cs4231var.h>
     61 
     62 /*---*/
     63 #define CSAUDIO_DAC_LVL		0
     64 #define CSAUDIO_LINE_IN_LVL	1
     65 #define CSAUDIO_MONO_LVL	2
     66 #define CSAUDIO_CD_LVL		3
     67 #define CSAUDIO_OUTPUT_LVL	4
     68 #define CSAUDIO_OUT_LVL		5
     69 #define CSAUDIO_LINE_IN_MUTE	6
     70 #define CSAUDIO_DAC_MUTE	7
     71 #define CSAUDIO_CD_MUTE		8
     72 #define CSAUDIO_MONO_MUTE	9
     73 #define CSAUDIO_OUTPUT_MUTE	10
     74 #define CSAUDIO_OUT_MUTE	11
     75 #define CSAUDIO_REC_LVL		12
     76 #define CSAUDIO_RECORD_SOURCE	13
     77 
     78 #define CSAUDIO_INPUT_CLASS	14
     79 #define CSAUDIO_MONITOR_CLASS	15
     80 #define CSAUDIO_RECORD_CLASS	16
     81 
     82 #ifdef AUDIO_DEBUG
     83 int     cs4231_debug = 0;
     84 #define DPRINTF(x)      if (cs4231_debug) printf x
     85 #else
     86 #define DPRINTF(x)
     87 #endif
     88 
     89 struct audio_device cs4231_device = {
     90 	"cs4231",
     91 	"x",
     92 	"audio"
     93 };
     94 
     95 
     96 /* ad1848 sc_{read,write}reg */
     97 static int	cs4231_read(struct ad1848_softc *, int);
     98 static void	cs4231_write(struct ad1848_softc *, int, int);
     99 
    100 int
    101 cs4231_read(sc, index)
    102 	struct ad1848_softc	*sc;
    103 	int			index;
    104 {
    105 
    106 	return bus_space_read_1(sc->sc_iot, sc->sc_ioh, (index << 2));
    107 }
    108 
    109 void
    110 cs4231_write(sc, index, value)
    111 	struct ad1848_softc	*sc;
    112 	int			index, value;
    113 {
    114 
    115 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, (index << 2), value);
    116 }
    117 
    118 
    119 void
    120 cs4231_common_attach(sc, ioh)
    121 	struct cs4231_softc *sc;
    122 	bus_space_handle_t ioh;
    123 {
    124 	char *buf;
    125 	int reg;
    126 
    127 	sc->sc_ad1848.parent = sc;
    128 	sc->sc_ad1848.sc_iot = sc->sc_bustag;
    129 	sc->sc_ad1848.sc_ioh = ioh;
    130 	sc->sc_ad1848.sc_readreg = cs4231_read;
    131 	sc->sc_ad1848.sc_writereg = cs4231_write;
    132 
    133 	sc->sc_playback.t_name = "playback";
    134 	sc->sc_capture.t_name = "capture";
    135 
    136 	evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR,
    137 			     NULL,
    138 			     sc->sc_ad1848.sc_dev.dv_xname, "total");
    139 
    140 	evcnt_attach_dynamic(&sc->sc_playback.t_intrcnt, EVCNT_TYPE_INTR,
    141 			     &sc->sc_intrcnt,
    142 			     sc->sc_ad1848.sc_dev.dv_xname, "playback");
    143 
    144 	evcnt_attach_dynamic(&sc->sc_playback.t_ierrcnt, EVCNT_TYPE_INTR,
    145 			     &sc->sc_intrcnt,
    146 			     sc->sc_ad1848.sc_dev.dv_xname, "perrors");
    147 
    148 	evcnt_attach_dynamic(&sc->sc_capture.t_intrcnt, EVCNT_TYPE_INTR,
    149 			     &sc->sc_intrcnt,
    150 			     sc->sc_ad1848.sc_dev.dv_xname, "capture");
    151 
    152 	evcnt_attach_dynamic(&sc->sc_capture.t_ierrcnt, EVCNT_TYPE_INTR,
    153 			     &sc->sc_intrcnt,
    154 			     sc->sc_ad1848.sc_dev.dv_xname, "cerrors");
    155 
    156 	/* put chip in native mode to access (extended) ID register */
    157 	reg = ad_read(&sc->sc_ad1848, SP_MISC_INFO);
    158 	ad_write(&sc->sc_ad1848, SP_MISC_INFO, reg | MODE2);
    159 
    160 	/* read version numbers from I25 */
    161 	reg = ad_read(&sc->sc_ad1848, CS_VERSION_ID);
    162 	switch (reg & (CS_VERSION_NUMBER | CS_VERSION_CHIPID)) {
    163 	case 0xa0:
    164 		sc->sc_ad1848.chip_name = "CS4231A";
    165 		break;
    166 	case 0x80:
    167 		sc->sc_ad1848.chip_name = "CS4231";
    168 		break;
    169 	case 0x82:
    170 		sc->sc_ad1848.chip_name = "CS4232";
    171 		break;
    172 	default:
    173 		if ((buf = malloc(32, M_TEMP, M_NOWAIT)) != NULL) {
    174 			sprintf(buf, "unknown rev: %x/%x", reg&0xe0, reg&7);
    175 			sc->sc_ad1848.chip_name = buf;
    176 		}
    177 	}
    178 
    179 	sc->sc_ad1848.mode = 2;	/* put ad1848 driver in `MODE 2' mode */
    180 	ad1848_attach(&sc->sc_ad1848);
    181 }
    182 
    183 void *
    184 cs4231_malloc(addr, direction, size, pool, flags)
    185 	void *addr;
    186 	int direction;
    187 	size_t size;
    188 	int pool, flags;
    189 {
    190 	struct cs4231_softc *sc = addr;
    191 	bus_dma_tag_t dmatag = sc->sc_dmatag;
    192 	struct cs_dma *p;
    193 
    194 	p = malloc(sizeof(*p), pool, flags);
    195 	if (p == NULL)
    196 		return (NULL);
    197 
    198 	/* Allocate a DMA map */
    199 	if (bus_dmamap_create(dmatag, size, 1, size, 0,
    200 				BUS_DMA_NOWAIT, &p->dmamap) != 0)
    201 		goto fail1;
    202 
    203 	/* Allocate DMA memory */
    204 	p->size = size;
    205 	if (bus_dmamem_alloc(dmatag, size, 64*1024, 0,
    206 				p->segs, sizeof(p->segs)/sizeof(p->segs[0]),
    207 				&p->nsegs, BUS_DMA_NOWAIT) != 0)
    208 		goto fail2;
    209 
    210 	/* Map DMA memory into kernel space */
    211 	if (bus_dmamem_map(dmatag, p->segs, p->nsegs, p->size,
    212 			   &p->addr, BUS_DMA_NOWAIT|BUS_DMA_COHERENT) != 0)
    213 		goto fail3;
    214 
    215 	/* Load the buffer */
    216 	if (bus_dmamap_load(dmatag, p->dmamap,
    217 			    p->addr, size, NULL, BUS_DMA_NOWAIT) != 0)
    218 		goto fail4;
    219 
    220 	p->next = sc->sc_dmas;
    221 	sc->sc_dmas = p;
    222 	return (p->addr);
    223 
    224 fail4:
    225 	bus_dmamem_unmap(dmatag, p->addr, p->size);
    226 fail3:
    227 	bus_dmamem_free(dmatag, p->segs, p->nsegs);
    228 fail2:
    229 	bus_dmamap_destroy(dmatag, p->dmamap);
    230 fail1:
    231 	free(p, pool);
    232 	return (NULL);
    233 }
    234 
    235 void
    236 cs4231_free(addr, ptr, pool)
    237 	void *addr;
    238 	void *ptr;
    239 	int pool;
    240 {
    241 	struct cs4231_softc *sc = addr;
    242 	bus_dma_tag_t dmatag = sc->sc_dmatag;
    243 	struct cs_dma *p, **pp;
    244 
    245 	for (pp = &sc->sc_dmas; (p = *pp) != NULL; pp = &(*pp)->next) {
    246 		if (p->addr != ptr)
    247 			continue;
    248 		bus_dmamap_unload(dmatag, p->dmamap);
    249 		bus_dmamem_unmap(dmatag, p->addr, p->size);
    250 		bus_dmamem_free(dmatag, p->segs, p->nsegs);
    251 		bus_dmamap_destroy(dmatag, p->dmamap);
    252 		*pp = p->next;
    253 		free(p, pool);
    254 		return;
    255 	}
    256 	printf("cs4231_free: rogue pointer\n");
    257 }
    258 
    259 
    260 /*
    261  * Set up transfer and return DMA address and byte count in paddr and psize
    262  * for bus dependent trigger_{in,out}put to load into the dma controller.
    263  */
    264 int
    265 cs4231_transfer_init(sc, t, paddr, psize, start, end, blksize, intr, arg)
    266 	struct cs4231_softc *sc;
    267 	struct cs_transfer *t;
    268 	bus_addr_t *paddr;
    269 	bus_size_t *psize;
    270 	void *start, *end;
    271 	int blksize;
    272 	void (*intr)(void *);
    273 	void *arg;
    274 {
    275 	struct cs_dma *p;
    276 	vsize_t n;
    277 
    278 	if (t->t_active) {
    279 		printf("%s: %s already running\n",
    280 		       sc->sc_ad1848.sc_dev.dv_xname, t->t_name);
    281 		return (EINVAL);
    282 	}
    283 
    284 	t->t_intr = intr;
    285 	t->t_arg = arg;
    286 
    287 	for (p = sc->sc_dmas; p != NULL && p->addr != start; p = p->next)
    288 		continue;
    289 	if (p == NULL) {
    290 		printf("%s: bad %s addr %p\n",
    291 		       sc->sc_ad1848.sc_dev.dv_xname, t->t_name, start);
    292 		return (EINVAL);
    293 	}
    294 
    295 	n = (char *)end - (char *)start;
    296 
    297 	t->t_dma = p;		/* the DMA memory segment */
    298 	t->t_segsz = n;		/* size of DMA segment */
    299 	t->t_blksz = blksize;	/* do transfers in blksize chunks */
    300 
    301 	if (n > t->t_blksz)
    302 		n = t->t_blksz;
    303 
    304 	t->t_cnt = n;
    305 
    306 	/* for caller to load into dma controller */
    307 	*paddr = t->t_dma->dmamap->dm_segs[0].ds_addr;
    308 	*psize = n;
    309 
    310 	DPRINTF(("%s: init %s: [%p..%p] %lu bytes %lu blocks;"
    311 		 " dma at 0x%lx count %lu\n",
    312 		 sc->sc_ad1848.sc_dev.dv_xname, t->t_name,
    313 		 start, end, (u_long)t->t_segsz, (u_long)t->t_blksz,
    314 		 (u_long)*paddr, (u_long)*psize));
    315 
    316 	t->t_active = 1;
    317 	return (0);
    318 }
    319 
    320 /*
    321  * Compute next DMA address/counter, update transfer status.
    322  */
    323 void
    324 cs4231_transfer_advance(t, paddr, psize)
    325 	struct cs_transfer *t;
    326 	bus_addr_t *paddr;
    327 	bus_size_t *psize;
    328 {
    329 	bus_addr_t dmabase, nextaddr;
    330 	bus_size_t togo;
    331 
    332 	dmabase = t->t_dma->dmamap->dm_segs[0].ds_addr;
    333 
    334 	togo = t->t_segsz - t->t_cnt;
    335 	if (togo == 0) {	/* roll over */
    336 		nextaddr = dmabase;
    337 		t->t_cnt = togo = t->t_blksz;
    338 	} else {
    339 		nextaddr = dmabase + t->t_cnt;
    340 		if (togo > t->t_blksz)
    341 			togo = t->t_blksz;
    342 		t->t_cnt += togo;
    343 	}
    344 
    345 	/* for caller to load into dma controller */
    346 	*paddr = nextaddr;
    347 	*psize = togo;
    348 }
    349 
    350 
    351 int
    352 cs4231_open(addr, flags)
    353 	void *addr;
    354 	int flags;
    355 {
    356 	struct cs4231_softc *sc = addr;
    357 
    358 	DPRINTF(("sa_open: unit %p\n", sc));
    359 
    360 	if (sc->sc_open)
    361 		return (EBUSY);
    362 
    363 	sc->sc_open = 1;
    364 
    365 	sc->sc_playback.t_active = 0;
    366 	sc->sc_playback.t_intr = NULL;
    367 	sc->sc_playback.t_arg = NULL;
    368 
    369 	sc->sc_capture.t_active = 0;
    370 	sc->sc_capture.t_intr = NULL;
    371 	sc->sc_capture.t_arg = NULL;
    372 
    373 	/* no interrupts from ad1848 */
    374 	ad_write(&sc->sc_ad1848, SP_PIN_CONTROL, 0);
    375 	ad1848_reset(&sc->sc_ad1848);
    376 
    377 	DPRINTF(("sa_open: ok -> sc=%p\n", sc));
    378 	return (0);
    379 }
    380 
    381 void
    382 cs4231_close(addr)
    383 	void *addr;
    384 {
    385 	struct cs4231_softc *sc = addr;
    386 
    387 	DPRINTF(("sa_close: sc=%p\n", sc));
    388 
    389 	/* audio(9) already called halt methods */
    390 	sc->sc_open = 0;
    391 
    392 	DPRINTF(("sa_close: closed.\n"));
    393 }
    394 
    395 size_t
    396 cs4231_round_buffersize(addr, direction, size)
    397 	void *addr;
    398 	int direction;
    399 	size_t size;
    400 {
    401 
    402 	return (size);
    403 }
    404 
    405 int
    406 cs4231_round_blocksize(addr, blk)
    407 	void *addr;
    408 	int blk;
    409 {
    410 
    411 	return (blk & ~3);
    412 }
    413 
    414 int
    415 cs4231_getdev(addr, retp)
    416         void *addr;
    417         struct audio_device *retp;
    418 {
    419 
    420         *retp = cs4231_device;
    421         return (0);
    422 }
    423 
    424 static ad1848_devmap_t csmapping[] = {
    425 	{ CSAUDIO_DAC_LVL, AD1848_KIND_LVL, AD1848_AUX1_CHANNEL },
    426 	{ CSAUDIO_LINE_IN_LVL, AD1848_KIND_LVL, AD1848_LINE_CHANNEL },
    427 	{ CSAUDIO_MONO_LVL, AD1848_KIND_LVL, AD1848_MONO_CHANNEL },
    428 	{ CSAUDIO_CD_LVL, AD1848_KIND_LVL, AD1848_AUX2_CHANNEL },
    429 	{ CSAUDIO_OUTPUT_LVL, AD1848_KIND_LVL, AD1848_MONITOR_CHANNEL },
    430 	{ CSAUDIO_OUT_LVL, AD1848_KIND_LVL, AD1848_DAC_CHANNEL },
    431 	{ CSAUDIO_DAC_MUTE, AD1848_KIND_MUTE, AD1848_AUX1_CHANNEL },
    432 	{ CSAUDIO_LINE_IN_MUTE, AD1848_KIND_MUTE, AD1848_LINE_CHANNEL },
    433 	{ CSAUDIO_MONO_MUTE, AD1848_KIND_MUTE, AD1848_MONO_CHANNEL },
    434 	{ CSAUDIO_CD_MUTE, AD1848_KIND_MUTE, AD1848_AUX2_CHANNEL },
    435 	{ CSAUDIO_OUTPUT_MUTE, AD1848_KIND_MUTE, AD1848_MONITOR_CHANNEL },
    436 	{ CSAUDIO_OUT_MUTE, AD1848_KIND_MUTE, AD1848_OUT_CHANNEL },
    437 	{ CSAUDIO_REC_LVL, AD1848_KIND_RECORDGAIN, -1 },
    438 	{ CSAUDIO_RECORD_SOURCE, AD1848_KIND_RECORDSOURCE, -1 }
    439 };
    440 
    441 static int nummap = sizeof(csmapping) / sizeof(csmapping[0]);
    442 
    443 
    444 int
    445 cs4231_set_port(addr, cp)
    446 	void *addr;
    447 	mixer_ctrl_t *cp;
    448 {
    449 	struct ad1848_softc *ac = addr;
    450 
    451 	DPRINTF(("cs4231_set_port: port=%d", cp->dev));
    452 	return (ad1848_mixer_set_port(ac, csmapping, nummap, cp));
    453 }
    454 
    455 int
    456 cs4231_get_port(addr, cp)
    457 	void *addr;
    458 	mixer_ctrl_t *cp;
    459 {
    460 	struct ad1848_softc *ac = addr;
    461 
    462 	DPRINTF(("cs4231_get_port: port=%d", cp->dev));
    463 	return (ad1848_mixer_get_port(ac, csmapping, nummap, cp));
    464 }
    465 
    466 int
    467 cs4231_get_props(addr)
    468 	void *addr;
    469 {
    470 
    471 	return (AUDIO_PROP_FULLDUPLEX);
    472 }
    473 
    474 int
    475 cs4231_query_devinfo(addr, dip)
    476 	void *addr;
    477 	mixer_devinfo_t *dip;
    478 {
    479 
    480 	switch(dip->index) {
    481 
    482 	case CSAUDIO_DAC_LVL:		/*  dacout */
    483 		dip->type = AUDIO_MIXER_VALUE;
    484 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
    485 		dip->prev = AUDIO_MIXER_LAST;
    486 		dip->next = CSAUDIO_DAC_MUTE;
    487 		strcpy(dip->label.name, AudioNdac);
    488 		dip->un.v.num_channels = 2;
    489 		strcpy(dip->un.v.units.name, AudioNvolume);
    490 		break;
    491 
    492 	case CSAUDIO_LINE_IN_LVL:	/* line */
    493 		dip->type = AUDIO_MIXER_VALUE;
    494 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
    495 		dip->prev = AUDIO_MIXER_LAST;
    496 		dip->next = CSAUDIO_LINE_IN_MUTE;
    497 		strcpy(dip->label.name, AudioNline);
    498 		dip->un.v.num_channels = 2;
    499 		strcpy(dip->un.v.units.name, AudioNvolume);
    500 		break;
    501 
    502 	case CSAUDIO_MONO_LVL:	/* mono/microphone mixer */
    503 		dip->type = AUDIO_MIXER_VALUE;
    504 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
    505 		dip->prev = AUDIO_MIXER_LAST;
    506 		dip->next = CSAUDIO_MONO_MUTE;
    507 		strcpy(dip->label.name, AudioNmicrophone);
    508 		dip->un.v.num_channels = 1;
    509 		strcpy(dip->un.v.units.name, AudioNvolume);
    510 		break;
    511 
    512 	case CSAUDIO_CD_LVL:		/* cd */
    513 		dip->type = AUDIO_MIXER_VALUE;
    514 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
    515 		dip->prev = AUDIO_MIXER_LAST;
    516 		dip->next = CSAUDIO_CD_MUTE;
    517 		strcpy(dip->label.name, AudioNcd);
    518 		dip->un.v.num_channels = 2;
    519 		strcpy(dip->un.v.units.name, AudioNvolume);
    520 		break;
    521 
    522 
    523 	case CSAUDIO_OUTPUT_LVL:	/* monitor level */
    524 		dip->type = AUDIO_MIXER_VALUE;
    525 		dip->mixer_class = CSAUDIO_MONITOR_CLASS;
    526 		dip->next = CSAUDIO_OUTPUT_MUTE;
    527 		dip->prev = AUDIO_MIXER_LAST;
    528 		strcpy(dip->label.name, AudioNmonitor);
    529 		dip->un.v.num_channels = 1;
    530 		strcpy(dip->un.v.units.name, AudioNvolume);
    531 		break;
    532 
    533 	case CSAUDIO_OUT_LVL:		/* cs4231 output volume */
    534 		dip->type = AUDIO_MIXER_VALUE;
    535 		dip->mixer_class = CSAUDIO_MONITOR_CLASS;
    536 		dip->next = dip->prev = AUDIO_MIXER_LAST;
    537 		strcpy(dip->label.name, AudioNmaster);
    538 		dip->un.v.num_channels = 2;
    539 		strcpy(dip->un.v.units.name, AudioNvolume);
    540 		break;
    541 
    542 	case CSAUDIO_OUT_MUTE: /* mute built-in speaker */
    543 		dip->mixer_class = CSAUDIO_MONITOR_CLASS;
    544 		dip->type = AUDIO_MIXER_ENUM;
    545 		dip->prev = CSAUDIO_MONITOR_CLASS;
    546 		dip->next = AUDIO_MIXER_LAST;
    547 		strcpy(dip->label.name, AudioNmono);
    548 		/* names reversed, this is a "mute" value used as "mono enabled" */
    549 		dip->un.e.num_mem = 2;
    550 		strcpy(dip->un.e.member[0].label.name, AudioNon);
    551 		dip->un.e.member[0].ord = 0;
    552 		strcpy(dip->un.e.member[1].label.name, AudioNoff);
    553 		dip->un.e.member[1].ord = 1;
    554 		break;
    555 
    556 	case CSAUDIO_LINE_IN_MUTE:
    557 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
    558 		dip->type = AUDIO_MIXER_ENUM;
    559 		dip->prev = CSAUDIO_LINE_IN_LVL;
    560 		dip->next = AUDIO_MIXER_LAST;
    561 		goto mute;
    562 
    563 	case CSAUDIO_DAC_MUTE:
    564 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
    565 		dip->type = AUDIO_MIXER_ENUM;
    566 		dip->prev = CSAUDIO_DAC_LVL;
    567 		dip->next = AUDIO_MIXER_LAST;
    568 		goto mute;
    569 
    570 	case CSAUDIO_CD_MUTE:
    571 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
    572 		dip->type = AUDIO_MIXER_ENUM;
    573 		dip->prev = CSAUDIO_CD_LVL;
    574 		dip->next = AUDIO_MIXER_LAST;
    575 		goto mute;
    576 
    577 	case CSAUDIO_MONO_MUTE:
    578 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
    579 		dip->type = AUDIO_MIXER_ENUM;
    580 		dip->prev = CSAUDIO_MONO_LVL;
    581 		dip->next = AUDIO_MIXER_LAST;
    582 		goto mute;
    583 
    584 	case CSAUDIO_OUTPUT_MUTE:
    585 		dip->mixer_class = CSAUDIO_MONITOR_CLASS;
    586 		dip->type = AUDIO_MIXER_ENUM;
    587 		dip->prev = CSAUDIO_OUTPUT_LVL;
    588 		dip->next = AUDIO_MIXER_LAST;
    589 	mute:
    590 		strcpy(dip->label.name, AudioNmute);
    591 		dip->un.e.num_mem = 2;
    592 		strcpy(dip->un.e.member[0].label.name, AudioNoff);
    593 		dip->un.e.member[0].ord = 0;
    594 		strcpy(dip->un.e.member[1].label.name, AudioNon);
    595 		dip->un.e.member[1].ord = 1;
    596 		break;
    597 
    598 	case CSAUDIO_REC_LVL:	/* record level */
    599 		dip->type = AUDIO_MIXER_VALUE;
    600 		dip->mixer_class = CSAUDIO_RECORD_CLASS;
    601 		dip->prev = AUDIO_MIXER_LAST;
    602 		dip->next = CSAUDIO_RECORD_SOURCE;
    603 		strcpy(dip->label.name, AudioNrecord);
    604 		dip->un.v.num_channels = 2;
    605 		strcpy(dip->un.v.units.name, AudioNvolume);
    606 		break;
    607 
    608 	case CSAUDIO_RECORD_SOURCE:
    609 		dip->mixer_class = CSAUDIO_RECORD_CLASS;
    610 		dip->type = AUDIO_MIXER_ENUM;
    611 		dip->prev = CSAUDIO_REC_LVL;
    612 		dip->next = AUDIO_MIXER_LAST;
    613 		strcpy(dip->label.name, AudioNsource);
    614 		dip->un.e.num_mem = 4;
    615 		strcpy(dip->un.e.member[0].label.name, AudioNoutput);
    616 		dip->un.e.member[0].ord = DAC_IN_PORT;
    617 		strcpy(dip->un.e.member[1].label.name, AudioNmicrophone);
    618 		dip->un.e.member[1].ord = MIC_IN_PORT;
    619 		strcpy(dip->un.e.member[2].label.name, AudioNdac);
    620 		dip->un.e.member[2].ord = AUX1_IN_PORT;
    621 		strcpy(dip->un.e.member[3].label.name, AudioNline);
    622 		dip->un.e.member[3].ord = LINE_IN_PORT;
    623 		break;
    624 
    625 	case CSAUDIO_INPUT_CLASS:		/* input class descriptor */
    626 		dip->type = AUDIO_MIXER_CLASS;
    627 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
    628 		dip->next = dip->prev = AUDIO_MIXER_LAST;
    629 		strcpy(dip->label.name, AudioCinputs);
    630 		break;
    631 
    632 	case CSAUDIO_MONITOR_CLASS:		/* output class descriptor */
    633 		dip->type = AUDIO_MIXER_CLASS;
    634 		dip->mixer_class = CSAUDIO_MONITOR_CLASS;
    635 		dip->next = dip->prev = AUDIO_MIXER_LAST;
    636 		strcpy(dip->label.name, AudioCmonitor);
    637 		break;
    638 
    639 	case CSAUDIO_RECORD_CLASS:		/* record source class */
    640 		dip->type = AUDIO_MIXER_CLASS;
    641 		dip->mixer_class = CSAUDIO_RECORD_CLASS;
    642 		dip->next = dip->prev = AUDIO_MIXER_LAST;
    643 		strcpy(dip->label.name, AudioCrecord);
    644 		break;
    645 
    646 	default:
    647 		return ENXIO;
    648 		/*NOTREACHED*/
    649 	}
    650 	DPRINTF(("AUDIO_MIXER_DEVINFO: name=%s\n", dip->label.name));
    651 
    652 	return (0);
    653 }
    654 
    655 #endif /* NAUDIO > 0 */
    656