xref: /netbsd/sys/dev/ic/cs4231.c (revision 70747dc1)
1 /*	$NetBSD: cs4231.c,v 1.32 2019/11/10 21:16:35 chs 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 1.32 2019/11/10 21:16:35 chs 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
cs4231_read(struct ad1848_softc * sc,int index)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
cs4231_write(struct ad1848_softc * sc,int index,int value)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
cs4231_common_attach(struct cs4231_softc * sc,device_t self,bus_space_handle_t ioh)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 		buf = malloc(32, M_TEMP, M_WAITOK);
168 		snprintf(buf, 32, "unknown rev: %x/%x",
169 		    reg&0xe0, reg&7);
170 		sc->sc_ad1848.chip_name = buf;
171 	}
172 
173 	sc->sc_ad1848.mode = 2;	/* put ad1848 driver in `MODE 2' mode */
174 	ad1848_attach(&sc->sc_ad1848);
175 }
176 
177 void *
cs4231_malloc(void * addr,int direction,size_t size)178 cs4231_malloc(void *addr, int direction, size_t size)
179 {
180 	struct cs4231_softc *sc;
181 	bus_dma_tag_t dmatag;
182 	struct cs_dma *p;
183 
184 	sc = addr;
185 	dmatag = sc->sc_dmatag;
186 	p = kmem_alloc(sizeof(*p), KM_SLEEP);
187 
188 	/* Allocate a DMA map */
189 	if (bus_dmamap_create(dmatag, size, 1, size, 0,
190 	    BUS_DMA_NOWAIT, &p->dmamap) != 0)
191 		goto fail1;
192 
193 	/* Allocate DMA memory */
194 	p->size = size;
195 	if (bus_dmamem_alloc(dmatag, size, 64*1024, 0,
196 	    p->segs, sizeof(p->segs)/sizeof(p->segs[0]),
197 	    &p->nsegs, BUS_DMA_NOWAIT) != 0)
198 		goto fail2;
199 
200 	/* Map DMA memory into kernel space */
201 	if (bus_dmamem_map(dmatag, p->segs, p->nsegs, p->size,
202 	    &p->addr, BUS_DMA_NOWAIT|BUS_DMA_COHERENT) != 0)
203 		goto fail3;
204 
205 	/* Load the buffer */
206 	if (bus_dmamap_load(dmatag, p->dmamap,
207 	    p->addr, size, NULL, BUS_DMA_NOWAIT) != 0)
208 		goto fail4;
209 
210 	p->next = sc->sc_dmas;
211 	sc->sc_dmas = p;
212 	return p->addr;
213 
214 fail4:
215 	bus_dmamem_unmap(dmatag, p->addr, p->size);
216 fail3:
217 	bus_dmamem_free(dmatag, p->segs, p->nsegs);
218 fail2:
219 	bus_dmamap_destroy(dmatag, p->dmamap);
220 fail1:
221 	kmem_free(p, sizeof(*p));
222 	return NULL;
223 }
224 
225 void
cs4231_free(void * addr,void * ptr,size_t size)226 cs4231_free(void *addr, void *ptr, size_t size)
227 {
228 	struct cs4231_softc *sc;
229 	bus_dma_tag_t dmatag;
230 	struct cs_dma *p, **pp;
231 
232 	sc = addr;
233 	dmatag = sc->sc_dmatag;
234 	for (pp = &sc->sc_dmas; (p = *pp) != NULL; pp = &(*pp)->next) {
235 		if (p->addr != ptr)
236 			continue;
237 		bus_dmamap_unload(dmatag, p->dmamap);
238 		bus_dmamem_unmap(dmatag, p->addr, p->size);
239 		bus_dmamem_free(dmatag, p->segs, p->nsegs);
240 		bus_dmamap_destroy(dmatag, p->dmamap);
241 		*pp = p->next;
242 		kmem_free(p, sizeof(*p));
243 		return;
244 	}
245 	printf("cs4231_free: rogue pointer\n");
246 }
247 
248 
249 /*
250  * Set up transfer and return DMA address and byte count in paddr and psize
251  * for bus dependent trigger_{in,out}put to load into the DMA controller.
252  */
253 int
cs4231_transfer_init(struct cs4231_softc * sc,struct cs_transfer * t,bus_addr_t * paddr,bus_size_t * psize,void * start,void * end,int blksize,void (* intr)(void *),void * arg)254 cs4231_transfer_init(
255 	struct cs4231_softc *sc,
256 	struct cs_transfer *t,
257 	bus_addr_t *paddr,
258 	bus_size_t *psize,
259 	void *start, void *end,
260 	int blksize,
261 	void (*intr)(void *),
262 	void *arg)
263 {
264 	struct cs_dma *p;
265 	vsize_t n;
266 
267 	if (t->t_active) {
268 		printf("%s: %s already running\n",
269 		       device_xname(sc->sc_ad1848.sc_dev), t->t_name);
270 		return EINVAL;
271 	}
272 
273 	t->t_intr = intr;
274 	t->t_arg = arg;
275 
276 	for (p = sc->sc_dmas; p != NULL && p->addr != start; p = p->next)
277 		continue;
278 	if (p == NULL) {
279 		printf("%s: bad %s addr %p\n",
280 		       device_xname(sc->sc_ad1848.sc_dev), t->t_name, start);
281 		return EINVAL;
282 	}
283 
284 	n = (char *)end - (char *)start;
285 
286 	t->t_dma = p;		/* the DMA memory segment */
287 	t->t_segsz = n;		/* size of DMA segment */
288 	t->t_blksz = blksize;	/* do transfers in blksize chunks */
289 
290 	if (n > t->t_blksz)
291 		n = t->t_blksz;
292 
293 	t->t_cnt = n;
294 
295 	/* for caller to load into DMA controller */
296 	*paddr = t->t_dma->dmamap->dm_segs[0].ds_addr;
297 	*psize = n;
298 
299 	DPRINTF(("%s: init %s: [%p..%p] %lu bytes %lu blocks;"
300 		 " DMA at 0x%lx count %lu\n",
301 		 device_xname(sc->sc_ad1848.sc_dev), t->t_name,
302 		 start, end, (u_long)t->t_segsz, (u_long)t->t_blksz,
303 		 (u_long)*paddr, (u_long)*psize));
304 
305 	t->t_active = 1;
306 	return 0;
307 }
308 
309 /*
310  * Compute next DMA address/counter, update transfer status.
311  */
312 void
cs4231_transfer_advance(struct cs_transfer * t,bus_addr_t * paddr,bus_size_t * psize)313 cs4231_transfer_advance(struct cs_transfer *t, bus_addr_t *paddr,
314     bus_size_t *psize)
315 {
316 	bus_addr_t dmabase, nextaddr;
317 	bus_size_t togo;
318 
319 	dmabase = t->t_dma->dmamap->dm_segs[0].ds_addr;
320 
321 	togo = t->t_segsz - t->t_cnt;
322 	if (togo == 0) {	/* roll over */
323 		nextaddr = dmabase;
324 		t->t_cnt = togo = t->t_blksz;
325 	} else {
326 		nextaddr = dmabase + t->t_cnt;
327 		if (togo > t->t_blksz)
328 			togo = t->t_blksz;
329 		t->t_cnt += togo;
330 	}
331 
332 	/* for caller to load into DMA controller */
333 	*paddr = nextaddr;
334 	*psize = togo;
335 }
336 
337 
338 int
cs4231_open(void * addr,int flags)339 cs4231_open(void *addr, int flags)
340 {
341 	struct cs4231_softc *sc;
342 
343 	sc = addr;
344 	DPRINTF(("sa_open: unit %p\n", sc));
345 
346 	sc->sc_playback.t_active = 0;
347 	sc->sc_playback.t_intr = NULL;
348 	sc->sc_playback.t_arg = NULL;
349 
350 	sc->sc_capture.t_active = 0;
351 	sc->sc_capture.t_intr = NULL;
352 	sc->sc_capture.t_arg = NULL;
353 
354 	/* no interrupts from ad1848 */
355 	ad_write(&sc->sc_ad1848, SP_PIN_CONTROL, 0);
356 	ad1848_reset(&sc->sc_ad1848);
357 
358 	DPRINTF(("sa_open: ok -> sc=%p\n", sc));
359 	return 0;
360 }
361 
362 void
cs4231_close(void * addr)363 cs4231_close(void *addr)
364 {
365 
366 	DPRINTF(("sa_close: sc=%p\n", addr));
367 
368 	/* audio(9) already called halt methods */
369 
370 	DPRINTF(("sa_close: closed.\n"));
371 }
372 
373 int
cs4231_getdev(void * addr,struct audio_device * retp)374 cs4231_getdev(void *addr, struct audio_device *retp)
375 {
376 
377 	*retp = cs4231_device;
378 	return 0;
379 }
380 
381 static const ad1848_devmap_t csmapping[] = {
382 	{ CSAUDIO_DAC_LVL, AD1848_KIND_LVL, AD1848_AUX1_CHANNEL },
383 	{ CSAUDIO_LINE_IN_LVL, AD1848_KIND_LVL, AD1848_LINE_CHANNEL },
384 	{ CSAUDIO_MONO_LVL, AD1848_KIND_LVL, AD1848_MONO_CHANNEL },
385 	{ CSAUDIO_CD_LVL, AD1848_KIND_LVL, AD1848_AUX2_CHANNEL },
386 	{ CSAUDIO_OUTPUT_LVL, AD1848_KIND_LVL, AD1848_MONITOR_CHANNEL },
387 	{ CSAUDIO_OUT_LVL, AD1848_KIND_LVL, AD1848_DAC_CHANNEL },
388 	{ CSAUDIO_DAC_MUTE, AD1848_KIND_MUTE, AD1848_AUX1_CHANNEL },
389 	{ CSAUDIO_LINE_IN_MUTE, AD1848_KIND_MUTE, AD1848_LINE_CHANNEL },
390 	{ CSAUDIO_MONO_MUTE, AD1848_KIND_MUTE, AD1848_MONO_CHANNEL },
391 	{ CSAUDIO_CD_MUTE, AD1848_KIND_MUTE, AD1848_AUX2_CHANNEL },
392 	{ CSAUDIO_OUTPUT_MUTE, AD1848_KIND_MUTE, AD1848_MONITOR_CHANNEL },
393 	{ CSAUDIO_OUT_MUTE, AD1848_KIND_MUTE, AD1848_OUT_CHANNEL },
394 	{ CSAUDIO_REC_LVL, AD1848_KIND_RECORDGAIN, -1 },
395 	{ CSAUDIO_RECORD_SOURCE, AD1848_KIND_RECORDSOURCE, -1 }
396 };
397 
398 static int nummap = sizeof(csmapping) / sizeof(csmapping[0]);
399 
400 
401 int
cs4231_set_port(void * addr,mixer_ctrl_t * cp)402 cs4231_set_port(void *addr, mixer_ctrl_t *cp)
403 {
404 	struct ad1848_softc *ac;
405 
406 	DPRINTF(("cs4231_set_port: port=%d", cp->dev));
407 	ac = addr;
408 	return ad1848_mixer_set_port(ac, csmapping, nummap, cp);
409 }
410 
411 int
cs4231_get_port(void * addr,mixer_ctrl_t * cp)412 cs4231_get_port(void *addr, mixer_ctrl_t *cp)
413 {
414 	struct ad1848_softc *ac;
415 
416 	DPRINTF(("cs4231_get_port: port=%d", cp->dev));
417 	ac = addr;
418 	return ad1848_mixer_get_port(ac, csmapping, nummap, cp);
419 }
420 
421 int
cs4231_get_props(void * addr)422 cs4231_get_props(void *addr)
423 {
424 
425 	return AUDIO_PROP_PLAYBACK | AUDIO_PROP_CAPTURE |
426 	    AUDIO_PROP_FULLDUPLEX;
427 }
428 
429 int
cs4231_query_devinfo(void * addr,mixer_devinfo_t * dip)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