xref: /netbsd-src/sys/dev/ic/cs4231.c (revision 946379e7b37692fc43f68eb0d1c10daa0a7f3b6c)
1 /*	$NetBSD: cs4231.c,v 1.28 2011/11/28 11:46:54 jmcneill 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 1.28 2011/11/28 11:46:54 jmcneill 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_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 	if (p == NULL)
189 		return NULL;
190 
191 	/* Allocate a DMA map */
192 	if (bus_dmamap_create(dmatag, size, 1, size, 0,
193 	    BUS_DMA_NOWAIT, &p->dmamap) != 0)
194 		goto fail1;
195 
196 	/* Allocate DMA memory */
197 	p->size = size;
198 	if (bus_dmamem_alloc(dmatag, size, 64*1024, 0,
199 	    p->segs, sizeof(p->segs)/sizeof(p->segs[0]),
200 	    &p->nsegs, BUS_DMA_NOWAIT) != 0)
201 		goto fail2;
202 
203 	/* Map DMA memory into kernel space */
204 	if (bus_dmamem_map(dmatag, p->segs, p->nsegs, p->size,
205 	    &p->addr, BUS_DMA_NOWAIT|BUS_DMA_COHERENT) != 0)
206 		goto fail3;
207 
208 	/* Load the buffer */
209 	if (bus_dmamap_load(dmatag, p->dmamap,
210 	    p->addr, size, NULL, BUS_DMA_NOWAIT) != 0)
211 		goto fail4;
212 
213 	p->next = sc->sc_dmas;
214 	sc->sc_dmas = p;
215 	return p->addr;
216 
217 fail4:
218 	bus_dmamem_unmap(dmatag, p->addr, p->size);
219 fail3:
220 	bus_dmamem_free(dmatag, p->segs, p->nsegs);
221 fail2:
222 	bus_dmamap_destroy(dmatag, p->dmamap);
223 fail1:
224 	kmem_free(p, sizeof(*p));
225 	return NULL;
226 }
227 
228 void
229 cs4231_free(void *addr, void *ptr, size_t size)
230 {
231 	struct cs4231_softc *sc;
232 	bus_dma_tag_t dmatag;
233 	struct cs_dma *p, **pp;
234 
235 	sc = addr;
236 	dmatag = sc->sc_dmatag;
237 	for (pp = &sc->sc_dmas; (p = *pp) != NULL; pp = &(*pp)->next) {
238 		if (p->addr != ptr)
239 			continue;
240 		bus_dmamap_unload(dmatag, p->dmamap);
241 		bus_dmamem_unmap(dmatag, p->addr, p->size);
242 		bus_dmamem_free(dmatag, p->segs, p->nsegs);
243 		bus_dmamap_destroy(dmatag, p->dmamap);
244 		*pp = p->next;
245 		kmem_free(p, sizeof(*p));
246 		return;
247 	}
248 	printf("cs4231_free: rogue pointer\n");
249 }
250 
251 
252 /*
253  * Set up transfer and return DMA address and byte count in paddr and psize
254  * for bus dependent trigger_{in,out}put to load into the DMA controller.
255  */
256 int
257 cs4231_transfer_init(
258 	struct cs4231_softc *sc,
259 	struct cs_transfer *t,
260 	bus_addr_t *paddr,
261 	bus_size_t *psize,
262 	void *start, void *end,
263 	int blksize,
264 	void (*intr)(void *),
265 	void *arg)
266 {
267 	struct cs_dma *p;
268 	vsize_t n;
269 
270 	if (t->t_active) {
271 		printf("%s: %s already running\n",
272 		       device_xname(sc->sc_ad1848.sc_dev), t->t_name);
273 		return EINVAL;
274 	}
275 
276 	t->t_intr = intr;
277 	t->t_arg = arg;
278 
279 	for (p = sc->sc_dmas; p != NULL && p->addr != start; p = p->next)
280 		continue;
281 	if (p == NULL) {
282 		printf("%s: bad %s addr %p\n",
283 		       device_xname(sc->sc_ad1848.sc_dev), t->t_name, start);
284 		return EINVAL;
285 	}
286 
287 	n = (char *)end - (char *)start;
288 
289 	t->t_dma = p;		/* the DMA memory segment */
290 	t->t_segsz = n;		/* size of DMA segment */
291 	t->t_blksz = blksize;	/* do transfers in blksize chunks */
292 
293 	if (n > t->t_blksz)
294 		n = t->t_blksz;
295 
296 	t->t_cnt = n;
297 
298 	/* for caller to load into DMA controller */
299 	*paddr = t->t_dma->dmamap->dm_segs[0].ds_addr;
300 	*psize = n;
301 
302 	DPRINTF(("%s: init %s: [%p..%p] %lu bytes %lu blocks;"
303 		 " DMA at 0x%lx count %lu\n",
304 		 device_xname(sc->sc_ad1848.sc_dev), t->t_name,
305 		 start, end, (u_long)t->t_segsz, (u_long)t->t_blksz,
306 		 (u_long)*paddr, (u_long)*psize));
307 
308 	t->t_active = 1;
309 	return 0;
310 }
311 
312 /*
313  * Compute next DMA address/counter, update transfer status.
314  */
315 void
316 cs4231_transfer_advance(struct cs_transfer *t, bus_addr_t *paddr,
317     bus_size_t *psize)
318 {
319 	bus_addr_t dmabase, nextaddr;
320 	bus_size_t togo;
321 
322 	dmabase = t->t_dma->dmamap->dm_segs[0].ds_addr;
323 
324 	togo = t->t_segsz - t->t_cnt;
325 	if (togo == 0) {	/* roll over */
326 		nextaddr = dmabase;
327 		t->t_cnt = togo = t->t_blksz;
328 	} else {
329 		nextaddr = dmabase + t->t_cnt;
330 		if (togo > t->t_blksz)
331 			togo = t->t_blksz;
332 		t->t_cnt += togo;
333 	}
334 
335 	/* for caller to load into DMA controller */
336 	*paddr = nextaddr;
337 	*psize = togo;
338 }
339 
340 
341 int
342 cs4231_open(void *addr, int flags)
343 {
344 	struct cs4231_softc *sc;
345 
346 	sc = addr;
347 	DPRINTF(("sa_open: unit %p\n", sc));
348 
349 	sc->sc_playback.t_active = 0;
350 	sc->sc_playback.t_intr = NULL;
351 	sc->sc_playback.t_arg = NULL;
352 
353 	sc->sc_capture.t_active = 0;
354 	sc->sc_capture.t_intr = NULL;
355 	sc->sc_capture.t_arg = NULL;
356 
357 	/* no interrupts from ad1848 */
358 	ad_write(&sc->sc_ad1848, SP_PIN_CONTROL, 0);
359 	ad1848_reset(&sc->sc_ad1848);
360 
361 	DPRINTF(("sa_open: ok -> sc=%p\n", sc));
362 	return 0;
363 }
364 
365 void
366 cs4231_close(void *addr)
367 {
368 
369 	DPRINTF(("sa_close: sc=%p\n", addr));
370 
371 	/* audio(9) already called halt methods */
372 
373 	DPRINTF(("sa_close: closed.\n"));
374 }
375 
376 int
377 cs4231_getdev(void *addr, struct audio_device *retp)
378 {
379 
380 	*retp = cs4231_device;
381 	return 0;
382 }
383 
384 static const ad1848_devmap_t csmapping[] = {
385 	{ CSAUDIO_DAC_LVL, AD1848_KIND_LVL, AD1848_AUX1_CHANNEL },
386 	{ CSAUDIO_LINE_IN_LVL, AD1848_KIND_LVL, AD1848_LINE_CHANNEL },
387 	{ CSAUDIO_MONO_LVL, AD1848_KIND_LVL, AD1848_MONO_CHANNEL },
388 	{ CSAUDIO_CD_LVL, AD1848_KIND_LVL, AD1848_AUX2_CHANNEL },
389 	{ CSAUDIO_OUTPUT_LVL, AD1848_KIND_LVL, AD1848_MONITOR_CHANNEL },
390 	{ CSAUDIO_OUT_LVL, AD1848_KIND_LVL, AD1848_DAC_CHANNEL },
391 	{ CSAUDIO_DAC_MUTE, AD1848_KIND_MUTE, AD1848_AUX1_CHANNEL },
392 	{ CSAUDIO_LINE_IN_MUTE, AD1848_KIND_MUTE, AD1848_LINE_CHANNEL },
393 	{ CSAUDIO_MONO_MUTE, AD1848_KIND_MUTE, AD1848_MONO_CHANNEL },
394 	{ CSAUDIO_CD_MUTE, AD1848_KIND_MUTE, AD1848_AUX2_CHANNEL },
395 	{ CSAUDIO_OUTPUT_MUTE, AD1848_KIND_MUTE, AD1848_MONITOR_CHANNEL },
396 	{ CSAUDIO_OUT_MUTE, AD1848_KIND_MUTE, AD1848_OUT_CHANNEL },
397 	{ CSAUDIO_REC_LVL, AD1848_KIND_RECORDGAIN, -1 },
398 	{ CSAUDIO_RECORD_SOURCE, AD1848_KIND_RECORDSOURCE, -1 }
399 };
400 
401 static int nummap = sizeof(csmapping) / sizeof(csmapping[0]);
402 
403 
404 int
405 cs4231_set_port(void *addr, mixer_ctrl_t *cp)
406 {
407 	struct ad1848_softc *ac;
408 
409 	DPRINTF(("cs4231_set_port: port=%d", cp->dev));
410 	ac = addr;
411 	return ad1848_mixer_set_port(ac, csmapping, nummap, cp);
412 }
413 
414 int
415 cs4231_get_port(void *addr, mixer_ctrl_t *cp)
416 {
417 	struct ad1848_softc *ac;
418 
419 	DPRINTF(("cs4231_get_port: port=%d", cp->dev));
420 	ac = addr;
421 	return ad1848_mixer_get_port(ac, csmapping, nummap, cp);
422 }
423 
424 int
425 cs4231_get_props(void *addr)
426 {
427 
428 	return AUDIO_PROP_FULLDUPLEX;
429 }
430 
431 int
432 cs4231_query_devinfo(void *addr, mixer_devinfo_t *dip)
433 {
434 
435 	switch(dip->index) {
436 
437 	case CSAUDIO_DAC_LVL:		/*  dacout */
438 		dip->type = AUDIO_MIXER_VALUE;
439 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
440 		dip->prev = AUDIO_MIXER_LAST;
441 		dip->next = CSAUDIO_DAC_MUTE;
442 		strcpy(dip->label.name, AudioNdac);
443 		dip->un.v.num_channels = 2;
444 		strcpy(dip->un.v.units.name, AudioNvolume);
445 		break;
446 
447 	case CSAUDIO_LINE_IN_LVL:	/* line */
448 		dip->type = AUDIO_MIXER_VALUE;
449 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
450 		dip->prev = AUDIO_MIXER_LAST;
451 		dip->next = CSAUDIO_LINE_IN_MUTE;
452 		strcpy(dip->label.name, AudioNline);
453 		dip->un.v.num_channels = 2;
454 		strcpy(dip->un.v.units.name, AudioNvolume);
455 		break;
456 
457 	case CSAUDIO_MONO_LVL:	/* mono/microphone mixer */
458 		dip->type = AUDIO_MIXER_VALUE;
459 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
460 		dip->prev = AUDIO_MIXER_LAST;
461 		dip->next = CSAUDIO_MONO_MUTE;
462 		strcpy(dip->label.name, AudioNmicrophone);
463 		dip->un.v.num_channels = 1;
464 		strcpy(dip->un.v.units.name, AudioNvolume);
465 		break;
466 
467 	case CSAUDIO_CD_LVL:		/* cd */
468 		dip->type = AUDIO_MIXER_VALUE;
469 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
470 		dip->prev = AUDIO_MIXER_LAST;
471 		dip->next = CSAUDIO_CD_MUTE;
472 		strcpy(dip->label.name, AudioNcd);
473 		dip->un.v.num_channels = 2;
474 		strcpy(dip->un.v.units.name, AudioNvolume);
475 		break;
476 
477 
478 	case CSAUDIO_OUTPUT_LVL:	/* monitor level */
479 		dip->type = AUDIO_MIXER_VALUE;
480 		dip->mixer_class = CSAUDIO_MONITOR_CLASS;
481 		dip->next = CSAUDIO_OUTPUT_MUTE;
482 		dip->prev = AUDIO_MIXER_LAST;
483 		strcpy(dip->label.name, AudioNmonitor);
484 		dip->un.v.num_channels = 1;
485 		strcpy(dip->un.v.units.name, AudioNvolume);
486 		break;
487 
488 	case CSAUDIO_OUT_LVL:		/* cs4231 output volume */
489 		dip->type = AUDIO_MIXER_VALUE;
490 		dip->mixer_class = CSAUDIO_MONITOR_CLASS;
491 		dip->next = dip->prev = AUDIO_MIXER_LAST;
492 		strcpy(dip->label.name, AudioNmaster);
493 		dip->un.v.num_channels = 2;
494 		dip->un.v.delta = 16;
495 		strcpy(dip->un.v.units.name, AudioNvolume);
496 		break;
497 
498 	case CSAUDIO_OUT_MUTE: /* mute built-in speaker */
499 		dip->mixer_class = CSAUDIO_MONITOR_CLASS;
500 		dip->type = AUDIO_MIXER_ENUM;
501 		dip->prev = CSAUDIO_MONITOR_CLASS;
502 		dip->next = AUDIO_MIXER_LAST;
503 		strcpy(dip->label.name, AudioNmono);
504 		/* names reversed, this is a "mute" value used as "mono enabled" */
505 		dip->un.e.num_mem = 2;
506 		strcpy(dip->un.e.member[0].label.name, AudioNon);
507 		dip->un.e.member[0].ord = 0;
508 		strcpy(dip->un.e.member[1].label.name, AudioNoff);
509 		dip->un.e.member[1].ord = 1;
510 		break;
511 
512 	case CSAUDIO_LINE_IN_MUTE:
513 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
514 		dip->type = AUDIO_MIXER_ENUM;
515 		dip->prev = CSAUDIO_LINE_IN_LVL;
516 		dip->next = AUDIO_MIXER_LAST;
517 		goto mute;
518 
519 	case CSAUDIO_DAC_MUTE:
520 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
521 		dip->type = AUDIO_MIXER_ENUM;
522 		dip->prev = CSAUDIO_DAC_LVL;
523 		dip->next = AUDIO_MIXER_LAST;
524 		goto mute;
525 
526 	case CSAUDIO_CD_MUTE:
527 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
528 		dip->type = AUDIO_MIXER_ENUM;
529 		dip->prev = CSAUDIO_CD_LVL;
530 		dip->next = AUDIO_MIXER_LAST;
531 		goto mute;
532 
533 	case CSAUDIO_MONO_MUTE:
534 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
535 		dip->type = AUDIO_MIXER_ENUM;
536 		dip->prev = CSAUDIO_MONO_LVL;
537 		dip->next = AUDIO_MIXER_LAST;
538 		goto mute;
539 
540 	case CSAUDIO_OUTPUT_MUTE:
541 		dip->mixer_class = CSAUDIO_MONITOR_CLASS;
542 		dip->type = AUDIO_MIXER_ENUM;
543 		dip->prev = CSAUDIO_OUTPUT_LVL;
544 		dip->next = AUDIO_MIXER_LAST;
545 	mute:
546 		strcpy(dip->label.name, AudioNmute);
547 		dip->un.e.num_mem = 2;
548 		strcpy(dip->un.e.member[0].label.name, AudioNoff);
549 		dip->un.e.member[0].ord = 0;
550 		strcpy(dip->un.e.member[1].label.name, AudioNon);
551 		dip->un.e.member[1].ord = 1;
552 		break;
553 
554 	case CSAUDIO_REC_LVL:	/* record level */
555 		dip->type = AUDIO_MIXER_VALUE;
556 		dip->mixer_class = CSAUDIO_RECORD_CLASS;
557 		dip->prev = AUDIO_MIXER_LAST;
558 		dip->next = CSAUDIO_RECORD_SOURCE;
559 		strcpy(dip->label.name, AudioNrecord);
560 		dip->un.v.num_channels = 2;
561 		strcpy(dip->un.v.units.name, AudioNvolume);
562 		break;
563 
564 	case CSAUDIO_RECORD_SOURCE:
565 		dip->mixer_class = CSAUDIO_RECORD_CLASS;
566 		dip->type = AUDIO_MIXER_ENUM;
567 		dip->prev = CSAUDIO_REC_LVL;
568 		dip->next = AUDIO_MIXER_LAST;
569 		strcpy(dip->label.name, AudioNsource);
570 		dip->un.e.num_mem = 4;
571 		strcpy(dip->un.e.member[0].label.name, AudioNoutput);
572 		dip->un.e.member[0].ord = DAC_IN_PORT;
573 		strcpy(dip->un.e.member[1].label.name, AudioNmicrophone);
574 		dip->un.e.member[1].ord = MIC_IN_PORT;
575 		strcpy(dip->un.e.member[2].label.name, AudioNdac);
576 		dip->un.e.member[2].ord = AUX1_IN_PORT;
577 		strcpy(dip->un.e.member[3].label.name, AudioNline);
578 		dip->un.e.member[3].ord = LINE_IN_PORT;
579 		break;
580 
581 	case CSAUDIO_INPUT_CLASS:		/* input class descriptor */
582 		dip->type = AUDIO_MIXER_CLASS;
583 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
584 		dip->next = dip->prev = AUDIO_MIXER_LAST;
585 		strcpy(dip->label.name, AudioCinputs);
586 		break;
587 
588 	case CSAUDIO_MONITOR_CLASS:		/* output class descriptor */
589 		dip->type = AUDIO_MIXER_CLASS;
590 		dip->mixer_class = CSAUDIO_MONITOR_CLASS;
591 		dip->next = dip->prev = AUDIO_MIXER_LAST;
592 		strcpy(dip->label.name, AudioCoutputs);
593 		break;
594 
595 	case CSAUDIO_RECORD_CLASS:		/* record source class */
596 		dip->type = AUDIO_MIXER_CLASS;
597 		dip->mixer_class = CSAUDIO_RECORD_CLASS;
598 		dip->next = dip->prev = AUDIO_MIXER_LAST;
599 		strcpy(dip->label.name, AudioCrecord);
600 		break;
601 
602 	default:
603 		return ENXIO;
604 		/*NOTREACHED*/
605 	}
606 	DPRINTF(("AUDIO_MIXER_DEVINFO: name=%s\n", dip->label.name));
607 
608 	return 0;
609 }
610 
611 #endif /* NAUDIO > 0 */
612