xref: /netbsd-src/sys/dev/ic/cs4231.c (revision e5548b402ae4c44fb816de42c7bba9581ce23ef5)
1 /*	$NetBSD: cs4231.c,v 1.18 2005/12/11 12:21:26 christos 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 1.18 2005/12/11 12:21:26 christos 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(struct ad1848_softc	*sc, int index)
102 {
103 
104 	return bus_space_read_1(sc->sc_iot, sc->sc_ioh, (index << 2));
105 }
106 
107 void
108 cs4231_write(struct ad1848_softc *sc, int index, int value)
109 {
110 
111 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, (index << 2), value);
112 }
113 
114 
115 void
116 cs4231_common_attach(struct cs4231_softc *sc, bus_space_handle_t ioh)
117 {
118 	char *buf;
119 	int reg;
120 
121 	sc->sc_ad1848.parent = sc;
122 	sc->sc_ad1848.sc_iot = sc->sc_bustag;
123 	sc->sc_ad1848.sc_ioh = ioh;
124 	sc->sc_ad1848.sc_readreg = cs4231_read;
125 	sc->sc_ad1848.sc_writereg = cs4231_write;
126 
127 	sc->sc_playback.t_name = "playback";
128 	sc->sc_capture.t_name = "capture";
129 
130 	evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR,
131 			     NULL,
132 			     sc->sc_ad1848.sc_dev.dv_xname, "total");
133 
134 	evcnt_attach_dynamic(&sc->sc_playback.t_intrcnt, EVCNT_TYPE_INTR,
135 			     &sc->sc_intrcnt,
136 			     sc->sc_ad1848.sc_dev.dv_xname, "playback");
137 
138 	evcnt_attach_dynamic(&sc->sc_playback.t_ierrcnt, EVCNT_TYPE_INTR,
139 			     &sc->sc_intrcnt,
140 			     sc->sc_ad1848.sc_dev.dv_xname, "perrors");
141 
142 	evcnt_attach_dynamic(&sc->sc_capture.t_intrcnt, EVCNT_TYPE_INTR,
143 			     &sc->sc_intrcnt,
144 			     sc->sc_ad1848.sc_dev.dv_xname, "capture");
145 
146 	evcnt_attach_dynamic(&sc->sc_capture.t_ierrcnt, EVCNT_TYPE_INTR,
147 			     &sc->sc_intrcnt,
148 			     sc->sc_ad1848.sc_dev.dv_xname, "cerrors");
149 
150 	/* put chip in native mode to access (extended) ID register */
151 	reg = ad_read(&sc->sc_ad1848, SP_MISC_INFO);
152 	ad_write(&sc->sc_ad1848, SP_MISC_INFO, reg | MODE2);
153 
154 	/* read version numbers from I25 */
155 	reg = ad_read(&sc->sc_ad1848, CS_VERSION_ID);
156 	switch (reg & (CS_VERSION_NUMBER | CS_VERSION_CHIPID)) {
157 	case 0xa0:
158 		sc->sc_ad1848.chip_name = "CS4231A";
159 		break;
160 	case 0x80:
161 		sc->sc_ad1848.chip_name = "CS4231";
162 		break;
163 	case 0x82:
164 		sc->sc_ad1848.chip_name = "CS4232";
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     struct malloc_type *pool, int flags)
181 {
182 	struct cs4231_softc *sc;
183 	bus_dma_tag_t dmatag;
184 	struct cs_dma *p;
185 
186 	sc = addr;
187 	dmatag = sc->sc_dmatag;
188 	p = malloc(sizeof(*p), pool, flags);
189 	if (p == NULL)
190 		return NULL;
191 
192 	/* Allocate a DMA map */
193 	if (bus_dmamap_create(dmatag, size, 1, size, 0,
194 	    BUS_DMA_NOWAIT, &p->dmamap) != 0)
195 		goto fail1;
196 
197 	/* Allocate DMA memory */
198 	p->size = size;
199 	if (bus_dmamem_alloc(dmatag, size, 64*1024, 0,
200 	    p->segs, sizeof(p->segs)/sizeof(p->segs[0]),
201 	    &p->nsegs, BUS_DMA_NOWAIT) != 0)
202 		goto fail2;
203 
204 	/* Map DMA memory into kernel space */
205 	if (bus_dmamem_map(dmatag, p->segs, p->nsegs, p->size,
206 	    &p->addr, BUS_DMA_NOWAIT|BUS_DMA_COHERENT) != 0)
207 		goto fail3;
208 
209 	/* Load the buffer */
210 	if (bus_dmamap_load(dmatag, p->dmamap,
211 	    p->addr, size, NULL, BUS_DMA_NOWAIT) != 0)
212 		goto fail4;
213 
214 	p->next = sc->sc_dmas;
215 	sc->sc_dmas = p;
216 	return p->addr;
217 
218 fail4:
219 	bus_dmamem_unmap(dmatag, p->addr, p->size);
220 fail3:
221 	bus_dmamem_free(dmatag, p->segs, p->nsegs);
222 fail2:
223 	bus_dmamap_destroy(dmatag, p->dmamap);
224 fail1:
225 	free(p, pool);
226 	return NULL;
227 }
228 
229 void
230 cs4231_free(void *addr, void *ptr, struct malloc_type *pool)
231 {
232 	struct cs4231_softc *sc;
233 	bus_dma_tag_t dmatag;
234 	struct cs_dma *p, **pp;
235 
236 	sc = addr;
237 	dmatag = sc->sc_dmatag;
238 	for (pp = &sc->sc_dmas; (p = *pp) != NULL; pp = &(*pp)->next) {
239 		if (p->addr != ptr)
240 			continue;
241 		bus_dmamap_unload(dmatag, p->dmamap);
242 		bus_dmamem_unmap(dmatag, p->addr, p->size);
243 		bus_dmamem_free(dmatag, p->segs, p->nsegs);
244 		bus_dmamap_destroy(dmatag, p->dmamap);
245 		*pp = p->next;
246 		free(p, pool);
247 		return;
248 	}
249 	printf("cs4231_free: rogue pointer\n");
250 }
251 
252 
253 /*
254  * Set up transfer and return DMA address and byte count in paddr and psize
255  * for bus dependent trigger_{in,out}put to load into the DMA controller.
256  */
257 int
258 cs4231_transfer_init(
259 	struct cs4231_softc *sc,
260 	struct cs_transfer *t,
261 	bus_addr_t *paddr,
262 	bus_size_t *psize,
263 	void *start, void *end,
264 	int blksize,
265 	void (*intr)(void *),
266 	void *arg)
267 {
268 	struct cs_dma *p;
269 	vsize_t n;
270 
271 	if (t->t_active) {
272 		printf("%s: %s already running\n",
273 		       sc->sc_ad1848.sc_dev.dv_xname, t->t_name);
274 		return EINVAL;
275 	}
276 
277 	t->t_intr = intr;
278 	t->t_arg = arg;
279 
280 	for (p = sc->sc_dmas; p != NULL && p->addr != start; p = p->next)
281 		continue;
282 	if (p == NULL) {
283 		printf("%s: bad %s addr %p\n",
284 		       sc->sc_ad1848.sc_dev.dv_xname, t->t_name, start);
285 		return EINVAL;
286 	}
287 
288 	n = (char *)end - (char *)start;
289 
290 	t->t_dma = p;		/* the DMA memory segment */
291 	t->t_segsz = n;		/* size of DMA segment */
292 	t->t_blksz = blksize;	/* do transfers in blksize chunks */
293 
294 	if (n > t->t_blksz)
295 		n = t->t_blksz;
296 
297 	t->t_cnt = n;
298 
299 	/* for caller to load into DMA controller */
300 	*paddr = t->t_dma->dmamap->dm_segs[0].ds_addr;
301 	*psize = n;
302 
303 	DPRINTF(("%s: init %s: [%p..%p] %lu bytes %lu blocks;"
304 		 " DMA at 0x%lx count %lu\n",
305 		 sc->sc_ad1848.sc_dev.dv_xname, t->t_name,
306 		 start, end, (u_long)t->t_segsz, (u_long)t->t_blksz,
307 		 (u_long)*paddr, (u_long)*psize));
308 
309 	t->t_active = 1;
310 	return 0;
311 }
312 
313 /*
314  * Compute next DMA address/counter, update transfer status.
315  */
316 void
317 cs4231_transfer_advance(struct cs_transfer *t, bus_addr_t *paddr,
318     bus_size_t *psize)
319 {
320 	bus_addr_t dmabase, nextaddr;
321 	bus_size_t togo;
322 
323 	dmabase = t->t_dma->dmamap->dm_segs[0].ds_addr;
324 
325 	togo = t->t_segsz - t->t_cnt;
326 	if (togo == 0) {	/* roll over */
327 		nextaddr = dmabase;
328 		t->t_cnt = togo = t->t_blksz;
329 	} else {
330 		nextaddr = dmabase + t->t_cnt;
331 		if (togo > t->t_blksz)
332 			togo = t->t_blksz;
333 		t->t_cnt += togo;
334 	}
335 
336 	/* for caller to load into DMA controller */
337 	*paddr = nextaddr;
338 	*psize = togo;
339 }
340 
341 
342 int
343 cs4231_open(void *addr, int flags)
344 {
345 	struct cs4231_softc *sc;
346 
347 	sc = addr;
348 	DPRINTF(("sa_open: unit %p\n", sc));
349 
350 	sc->sc_playback.t_active = 0;
351 	sc->sc_playback.t_intr = NULL;
352 	sc->sc_playback.t_arg = NULL;
353 
354 	sc->sc_capture.t_active = 0;
355 	sc->sc_capture.t_intr = NULL;
356 	sc->sc_capture.t_arg = NULL;
357 
358 	/* no interrupts from ad1848 */
359 	ad_write(&sc->sc_ad1848, SP_PIN_CONTROL, 0);
360 	ad1848_reset(&sc->sc_ad1848);
361 
362 	DPRINTF(("sa_open: ok -> sc=%p\n", sc));
363 	return 0;
364 }
365 
366 void
367 cs4231_close(void *addr)
368 {
369 
370 	DPRINTF(("sa_close: sc=%p\n", addr));
371 
372 	/* audio(9) already called halt methods */
373 
374 	DPRINTF(("sa_close: closed.\n"));
375 }
376 
377 int
378 cs4231_getdev(void *addr, struct audio_device *retp)
379 {
380 
381 	*retp = cs4231_device;
382 	return 0;
383 }
384 
385 static ad1848_devmap_t csmapping[] = {
386 	{ CSAUDIO_DAC_LVL, AD1848_KIND_LVL, AD1848_AUX1_CHANNEL },
387 	{ CSAUDIO_LINE_IN_LVL, AD1848_KIND_LVL, AD1848_LINE_CHANNEL },
388 	{ CSAUDIO_MONO_LVL, AD1848_KIND_LVL, AD1848_MONO_CHANNEL },
389 	{ CSAUDIO_CD_LVL, AD1848_KIND_LVL, AD1848_AUX2_CHANNEL },
390 	{ CSAUDIO_OUTPUT_LVL, AD1848_KIND_LVL, AD1848_MONITOR_CHANNEL },
391 	{ CSAUDIO_OUT_LVL, AD1848_KIND_LVL, AD1848_DAC_CHANNEL },
392 	{ CSAUDIO_DAC_MUTE, AD1848_KIND_MUTE, AD1848_AUX1_CHANNEL },
393 	{ CSAUDIO_LINE_IN_MUTE, AD1848_KIND_MUTE, AD1848_LINE_CHANNEL },
394 	{ CSAUDIO_MONO_MUTE, AD1848_KIND_MUTE, AD1848_MONO_CHANNEL },
395 	{ CSAUDIO_CD_MUTE, AD1848_KIND_MUTE, AD1848_AUX2_CHANNEL },
396 	{ CSAUDIO_OUTPUT_MUTE, AD1848_KIND_MUTE, AD1848_MONITOR_CHANNEL },
397 	{ CSAUDIO_OUT_MUTE, AD1848_KIND_MUTE, AD1848_OUT_CHANNEL },
398 	{ CSAUDIO_REC_LVL, AD1848_KIND_RECORDGAIN, -1 },
399 	{ CSAUDIO_RECORD_SOURCE, AD1848_KIND_RECORDSOURCE, -1 }
400 };
401 
402 static int nummap = sizeof(csmapping) / sizeof(csmapping[0]);
403 
404 
405 int
406 cs4231_set_port(void *addr, mixer_ctrl_t *cp)
407 {
408 	struct ad1848_softc *ac;
409 
410 	DPRINTF(("cs4231_set_port: port=%d", cp->dev));
411 	ac = addr;
412 	return ad1848_mixer_set_port(ac, csmapping, nummap, cp);
413 }
414 
415 int
416 cs4231_get_port(void *addr, mixer_ctrl_t *cp)
417 {
418 	struct ad1848_softc *ac;
419 
420 	DPRINTF(("cs4231_get_port: port=%d", cp->dev));
421 	ac = addr;
422 	return ad1848_mixer_get_port(ac, csmapping, nummap, cp);
423 }
424 
425 int
426 cs4231_get_props(void *addr)
427 {
428 
429 	return AUDIO_PROP_FULLDUPLEX;
430 }
431 
432 int
433 cs4231_query_devinfo(void *addr, mixer_devinfo_t *dip)
434 {
435 
436 	switch(dip->index) {
437 
438 	case CSAUDIO_DAC_LVL:		/*  dacout */
439 		dip->type = AUDIO_MIXER_VALUE;
440 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
441 		dip->prev = AUDIO_MIXER_LAST;
442 		dip->next = CSAUDIO_DAC_MUTE;
443 		strcpy(dip->label.name, AudioNdac);
444 		dip->un.v.num_channels = 2;
445 		strcpy(dip->un.v.units.name, AudioNvolume);
446 		break;
447 
448 	case CSAUDIO_LINE_IN_LVL:	/* line */
449 		dip->type = AUDIO_MIXER_VALUE;
450 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
451 		dip->prev = AUDIO_MIXER_LAST;
452 		dip->next = CSAUDIO_LINE_IN_MUTE;
453 		strcpy(dip->label.name, AudioNline);
454 		dip->un.v.num_channels = 2;
455 		strcpy(dip->un.v.units.name, AudioNvolume);
456 		break;
457 
458 	case CSAUDIO_MONO_LVL:	/* mono/microphone mixer */
459 		dip->type = AUDIO_MIXER_VALUE;
460 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
461 		dip->prev = AUDIO_MIXER_LAST;
462 		dip->next = CSAUDIO_MONO_MUTE;
463 		strcpy(dip->label.name, AudioNmicrophone);
464 		dip->un.v.num_channels = 1;
465 		strcpy(dip->un.v.units.name, AudioNvolume);
466 		break;
467 
468 	case CSAUDIO_CD_LVL:		/* cd */
469 		dip->type = AUDIO_MIXER_VALUE;
470 		dip->mixer_class = CSAUDIO_INPUT_CLASS;
471 		dip->prev = AUDIO_MIXER_LAST;
472 		dip->next = CSAUDIO_CD_MUTE;
473 		strcpy(dip->label.name, AudioNcd);
474 		dip->un.v.num_channels = 2;
475 		strcpy(dip->un.v.units.name, AudioNvolume);
476 		break;
477 
478 
479 	case CSAUDIO_OUTPUT_LVL:	/* monitor level */
480 		dip->type = AUDIO_MIXER_VALUE;
481 		dip->mixer_class = CSAUDIO_MONITOR_CLASS;
482 		dip->next = CSAUDIO_OUTPUT_MUTE;
483 		dip->prev = AUDIO_MIXER_LAST;
484 		strcpy(dip->label.name, AudioNmonitor);
485 		dip->un.v.num_channels = 1;
486 		strcpy(dip->un.v.units.name, AudioNvolume);
487 		break;
488 
489 	case CSAUDIO_OUT_LVL:		/* cs4231 output volume */
490 		dip->type = AUDIO_MIXER_VALUE;
491 		dip->mixer_class = CSAUDIO_MONITOR_CLASS;
492 		dip->next = dip->prev = AUDIO_MIXER_LAST;
493 		strcpy(dip->label.name, AudioNmaster);
494 		dip->un.v.num_channels = 2;
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, AudioCmonitor);
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