ad1816.c revision 142890 
1/*-
2 * Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
3 * Copyright Luigi Rizzo, 1997,1998
4 * Copyright by Hannu Savolainen 1994, 1995
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <dev/sound/pcm/sound.h>
30#include <dev/sound/isa/ad1816.h>
31
32#include <isa/isavar.h>
33
34#include "mixer_if.h"
35
36SND_DECLARE_FILE("$FreeBSD: head/sys/dev/sound/isa/ad1816.c 142890 2005-03-01 08:58:06Z imp $");
37
38struct ad1816_info;
39
40struct ad1816_chinfo {
41	struct ad1816_info *parent;
42	struct pcm_channel *channel;
43	struct snd_dbuf *buffer;
44	int dir, blksz;
45};
46
47struct ad1816_info {
48	struct resource *io_base;	/* primary I/O address for the board */
49	int io_rid;
50	struct resource *irq;
51	int irq_rid;
52	struct resource *drq1;		/* play */
53	int drq1_rid;
54	struct resource *drq2;		/* rec */
55	int drq2_rid;
56	void *ih;
57	bus_dma_tag_t parent_dmat;
58	struct mtx *lock;
59
60	unsigned int bufsize;
61	struct ad1816_chinfo pch, rch;
62};
63
64static u_int32_t ad1816_fmt[] = {
65	AFMT_U8,
66	AFMT_STEREO | AFMT_U8,
67	AFMT_S16_LE,
68	AFMT_STEREO | AFMT_S16_LE,
69	AFMT_MU_LAW,
70	AFMT_STEREO | AFMT_MU_LAW,
71	AFMT_A_LAW,
72	AFMT_STEREO | AFMT_A_LAW,
73	0
74};
75
76static struct pcmchan_caps ad1816_caps = {4000, 55200, ad1816_fmt, 0};
77
78#define AD1816_MUTE 31		/* value for mute */
79
80static void
81ad1816_lock(struct ad1816_info *ad1816)
82{
83	snd_mtxlock(ad1816->lock);
84}
85
86static void
87ad1816_unlock(struct ad1816_info *ad1816)
88{
89	snd_mtxunlock(ad1816->lock);
90}
91
92static int
93port_rd(struct resource *port, int off)
94{
95	if (port)
96		return bus_space_read_1(rman_get_bustag(port),
97					rman_get_bushandle(port),
98					off);
99	else
100		return -1;
101}
102
103static void
104port_wr(struct resource *port, int off, u_int8_t data)
105{
106	if (port)
107		bus_space_write_1(rman_get_bustag(port),
108				  rman_get_bushandle(port),
109				  off, data);
110}
111
112static int
113io_rd(struct ad1816_info *ad1816, int reg)
114{
115	return port_rd(ad1816->io_base, reg);
116}
117
118static void
119io_wr(struct ad1816_info *ad1816, int reg, u_int8_t data)
120{
121	port_wr(ad1816->io_base, reg, data);
122}
123
124static void
125ad1816_intr(void *arg)
126{
127    	struct ad1816_info *ad1816 = (struct ad1816_info *)arg;
128    	unsigned char   c, served = 0;
129
130	ad1816_lock(ad1816);
131    	/* get interupt status */
132    	c = io_rd(ad1816, AD1816_INT);
133
134    	/* check for stray interupts */
135    	if (c & ~(AD1816_INTRCI | AD1816_INTRPI)) {
136		printf("pcm: stray int (%x)\n", c);
137		c &= AD1816_INTRCI | AD1816_INTRPI;
138    	}
139    	/* check for capture interupt */
140    	if (sndbuf_runsz(ad1816->rch.buffer) && (c & AD1816_INTRCI)) {
141		chn_intr(ad1816->rch.channel);
142		served |= AD1816_INTRCI;		/* cp served */
143    	}
144    	/* check for playback interupt */
145    	if (sndbuf_runsz(ad1816->pch.buffer) && (c & AD1816_INTRPI)) {
146		chn_intr(ad1816->pch.channel);
147		served |= AD1816_INTRPI;		/* pb served */
148    	}
149    	if (served == 0) {
150		/* this probably means this is not a (working) ad1816 chip, */
151		/* or an error in dma handling                              */
152		printf("pcm: int without reason (%x)\n", c);
153		c = 0;
154    	} else c &= ~served;
155    	io_wr(ad1816, AD1816_INT, c);
156    	c = io_rd(ad1816, AD1816_INT);
157    	if (c != 0) printf("pcm: int clear failed (%x)\n", c);
158	ad1816_unlock(ad1816);
159}
160
161static int
162ad1816_wait_init(struct ad1816_info *ad1816, int x)
163{
164    	int             n = 0;	/* to shut up the compiler... */
165
166    	for (; x--;)
167		if ((n = (io_rd(ad1816, AD1816_ALE) & AD1816_BUSY)) == 0) DELAY(10);
168		else return n;
169    	printf("ad1816_wait_init failed 0x%02x.\n", n);
170    	return -1;
171}
172
173static unsigned short
174ad1816_read(struct ad1816_info *ad1816, unsigned int reg)
175{
176    	u_short         x = 0;
177
178    	if (ad1816_wait_init(ad1816, 100) == -1) return 0;
179    	io_wr(ad1816, AD1816_ALE, 0);
180    	io_wr(ad1816, AD1816_ALE, (reg & AD1816_ALEMASK));
181    	if (ad1816_wait_init(ad1816, 100) == -1) return 0;
182    	x = (io_rd(ad1816, AD1816_HIGH) << 8) | io_rd(ad1816, AD1816_LOW);
183    	return x;
184}
185
186static void
187ad1816_write(struct ad1816_info *ad1816, unsigned int reg, unsigned short data)
188{
189    	if (ad1816_wait_init(ad1816, 100) == -1) return;
190    	io_wr(ad1816, AD1816_ALE, (reg & AD1816_ALEMASK));
191    	io_wr(ad1816, AD1816_LOW,  (data & 0x000000ff));
192    	io_wr(ad1816, AD1816_HIGH, (data & 0x0000ff00) >> 8);
193}
194
195/* -------------------------------------------------------------------- */
196
197static int
198ad1816mix_init(struct snd_mixer *m)
199{
200	mix_setdevs(m, AD1816_MIXER_DEVICES);
201	mix_setrecdevs(m, AD1816_REC_DEVICES);
202	return 0;
203}
204
205static int
206ad1816mix_set(struct snd_mixer *m, unsigned dev, unsigned left, unsigned right)
207{
208	struct ad1816_info *ad1816 = mix_getdevinfo(m);
209    	u_short reg = 0;
210
211    	/* Scale volumes */
212    	left = AD1816_MUTE - (AD1816_MUTE * left) / 100;
213    	right = AD1816_MUTE - (AD1816_MUTE * right) / 100;
214
215    	reg = (left << 8) | right;
216
217    	/* do channel selective muting if volume is zero */
218    	if (left == AD1816_MUTE)	reg |= 0x8000;
219    	if (right == AD1816_MUTE)	reg |= 0x0080;
220
221	ad1816_lock(ad1816);
222    	switch (dev) {
223    	case SOUND_MIXER_VOLUME:	/* Register 14 master volume */
224		ad1816_write(ad1816, 14, reg);
225		break;
226
227    	case SOUND_MIXER_CD:	/* Register 15 cd */
228    	case SOUND_MIXER_LINE1:
229		ad1816_write(ad1816, 15, reg);
230		break;
231
232    	case SOUND_MIXER_SYNTH:	/* Register 16 synth */
233		ad1816_write(ad1816, 16, reg);
234		break;
235
236    	case SOUND_MIXER_PCM:	/* Register 4 pcm */
237		ad1816_write(ad1816, 4, reg);
238		break;
239
240    	case SOUND_MIXER_LINE:
241    	case SOUND_MIXER_LINE3:	/* Register 18 line in */
242		ad1816_write(ad1816, 18, reg);
243		break;
244
245    	case SOUND_MIXER_MIC:	/* Register 19 mic volume */
246		ad1816_write(ad1816, 19, reg & ~0xff);	/* mic is mono */
247		break;
248
249    	case SOUND_MIXER_IGAIN:
250		/* and now to something completely different ... */
251		ad1816_write(ad1816, 20, ((ad1816_read(ad1816, 20) & ~0x0f0f)
252	      	| (((AD1816_MUTE - left) / 2) << 8) /* four bits of adc gain */
253	      	| ((AD1816_MUTE - right) / 2)));
254		break;
255
256    	default:
257		printf("ad1816_mixer_set(): unknown device.\n");
258		break;
259    	}
260	ad1816_unlock(ad1816);
261
262    	left = ((AD1816_MUTE - left) * 100) / AD1816_MUTE;
263    	right = ((AD1816_MUTE - right) * 100) / AD1816_MUTE;
264
265    	return left | (right << 8);
266}
267
268static int
269ad1816mix_setrecsrc(struct snd_mixer *m, u_int32_t src)
270{
271	struct ad1816_info *ad1816 = mix_getdevinfo(m);
272    	int dev;
273
274    	switch (src) {
275    	case SOUND_MASK_LINE:
276    	case SOUND_MASK_LINE3:
277		dev = 0x00;
278		break;
279
280    	case SOUND_MASK_CD:
281    	case SOUND_MASK_LINE1:
282		dev = 0x20;
283		break;
284
285    	case SOUND_MASK_MIC:
286    	default:
287		dev = 0x50;
288		src = SOUND_MASK_MIC;
289    	}
290
291    	dev |= dev << 8;
292	ad1816_lock(ad1816);
293    	ad1816_write(ad1816, 20, (ad1816_read(ad1816, 20) & ~0x7070) | dev);
294	ad1816_unlock(ad1816);
295    	return src;
296}
297
298static kobj_method_t ad1816mixer_methods[] = {
299    	KOBJMETHOD(mixer_init,		ad1816mix_init),
300    	KOBJMETHOD(mixer_set,		ad1816mix_set),
301    	KOBJMETHOD(mixer_setrecsrc,	ad1816mix_setrecsrc),
302	{ 0, 0 }
303};
304MIXER_DECLARE(ad1816mixer);
305
306/* -------------------------------------------------------------------- */
307/* channel interface */
308static void *
309ad1816chan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir)
310{
311	struct ad1816_info *ad1816 = devinfo;
312	struct ad1816_chinfo *ch = (dir == PCMDIR_PLAY)? &ad1816->pch : &ad1816->rch;
313
314	ch->parent = ad1816;
315	ch->channel = c;
316	ch->buffer = b;
317	if (sndbuf_alloc(ch->buffer, ad1816->parent_dmat, ad1816->bufsize) != 0)
318		return NULL;
319	return ch;
320}
321
322static int
323ad1816chan_setdir(kobj_t obj, void *data, int dir)
324{
325	struct ad1816_chinfo *ch = data;
326  	struct ad1816_info *ad1816 = ch->parent;
327
328	sndbuf_dmasetup(ch->buffer, (dir == PCMDIR_PLAY)? ad1816->drq1 : ad1816->drq2);
329	ch->dir = dir;
330	return 0;
331}
332
333static int
334ad1816chan_setformat(kobj_t obj, void *data, u_int32_t format)
335{
336	struct ad1816_chinfo *ch = data;
337  	struct ad1816_info *ad1816 = ch->parent;
338    	int fmt = AD1816_U8, reg;
339
340	ad1816_lock(ad1816);
341    	if (ch->dir == PCMDIR_PLAY) {
342        	reg = AD1816_PLAY;
343        	ad1816_write(ad1816, 8, 0x0000);	/* reset base and current counter */
344        	ad1816_write(ad1816, 9, 0x0000);	/* for playback and capture */
345    	} else {
346        	reg = AD1816_CAPT;
347        	ad1816_write(ad1816, 10, 0x0000);
348        	ad1816_write(ad1816, 11, 0x0000);
349    	}
350    	switch (format & ~AFMT_STEREO) {
351    	case AFMT_A_LAW:
352        	fmt = AD1816_ALAW;
353		break;
354
355    	case AFMT_MU_LAW:
356		fmt = AD1816_MULAW;
357		break;
358
359    	case AFMT_S16_LE:
360		fmt = AD1816_S16LE;
361		break;
362
363    	case AFMT_S16_BE:
364		fmt = AD1816_S16BE;
365		break;
366
367    	case AFMT_U8:
368		fmt = AD1816_U8;
369		break;
370    	}
371    	if (format & AFMT_STEREO) fmt |= AD1816_STEREO;
372    	io_wr(ad1816, reg, fmt);
373	ad1816_unlock(ad1816);
374#if 0
375    	return format;
376#else
377    	return 0;
378#endif
379}
380
381static int
382ad1816chan_setspeed(kobj_t obj, void *data, u_int32_t speed)
383{
384	struct ad1816_chinfo *ch = data;
385    	struct ad1816_info *ad1816 = ch->parent;
386
387    	RANGE(speed, 4000, 55200);
388	ad1816_lock(ad1816);
389    	ad1816_write(ad1816, (ch->dir == PCMDIR_PLAY)? 2 : 3, speed);
390	ad1816_unlock(ad1816);
391    	return speed;
392}
393
394static int
395ad1816chan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize)
396{
397	struct ad1816_chinfo *ch = data;
398
399	ch->blksz = blocksize;
400	return ch->blksz;
401}
402
403static int
404ad1816chan_trigger(kobj_t obj, void *data, int go)
405{
406	struct ad1816_chinfo *ch = data;
407    	struct ad1816_info *ad1816 = ch->parent;
408    	int wr, reg;
409
410	if (go == PCMTRIG_EMLDMAWR || go == PCMTRIG_EMLDMARD)
411		return 0;
412
413	sndbuf_dma(ch->buffer, go);
414    	wr = (ch->dir == PCMDIR_PLAY);
415    	reg = wr? AD1816_PLAY : AD1816_CAPT;
416	ad1816_lock(ad1816);
417    	switch (go) {
418    	case PCMTRIG_START:
419		/* start only if not already running */
420		if (!(io_rd(ad1816, reg) & AD1816_ENABLE)) {
421	    		int cnt = ((ch->blksz) >> 2) - 1;
422	    		ad1816_write(ad1816, wr? 8 : 10, cnt); /* count */
423	    		ad1816_write(ad1816, wr? 9 : 11, 0); /* reset cur cnt */
424	    		ad1816_write(ad1816, 1, ad1816_read(ad1816, 1) |
425				     (wr? 0x8000 : 0x4000)); /* enable int */
426	    		/* enable playback */
427	    		io_wr(ad1816, reg, io_rd(ad1816, reg) | AD1816_ENABLE);
428	    		if (!(io_rd(ad1816, reg) & AD1816_ENABLE))
429				printf("ad1816: failed to start %s DMA!\n",
430				       wr? "play" : "rec");
431		}
432		break;
433
434    	case PCMTRIG_STOP:
435    	case PCMTRIG_ABORT:		/* XXX check this... */
436		/* we don't test here if it is running... */
437		if (wr) {
438	    		ad1816_write(ad1816, 1, ad1816_read(ad1816, 1) &
439				     ~(wr? 0x8000 : 0x4000));
440	    		/* disable int */
441	    		io_wr(ad1816, reg, io_rd(ad1816, reg) & ~AD1816_ENABLE);
442	    		/* disable playback */
443	    		if (io_rd(ad1816, reg) & AD1816_ENABLE)
444				printf("ad1816: failed to stop %s DMA!\n",
445				       wr? "play" : "rec");
446	    		ad1816_write(ad1816, wr? 8 : 10, 0); /* reset base cnt */
447	    		ad1816_write(ad1816, wr? 9 : 11, 0); /* reset cur cnt */
448		}
449		break;
450    	}
451	ad1816_unlock(ad1816);
452    	return 0;
453}
454
455static int
456ad1816chan_getptr(kobj_t obj, void *data)
457{
458	struct ad1816_chinfo *ch = data;
459	return sndbuf_dmaptr(ch->buffer);
460}
461
462static struct pcmchan_caps *
463ad1816chan_getcaps(kobj_t obj, void *data)
464{
465	return &ad1816_caps;
466}
467
468static kobj_method_t ad1816chan_methods[] = {
469    	KOBJMETHOD(channel_init,		ad1816chan_init),
470    	KOBJMETHOD(channel_setdir,		ad1816chan_setdir),
471    	KOBJMETHOD(channel_setformat,		ad1816chan_setformat),
472    	KOBJMETHOD(channel_setspeed,		ad1816chan_setspeed),
473    	KOBJMETHOD(channel_setblocksize,	ad1816chan_setblocksize),
474    	KOBJMETHOD(channel_trigger,		ad1816chan_trigger),
475    	KOBJMETHOD(channel_getptr,		ad1816chan_getptr),
476    	KOBJMETHOD(channel_getcaps,		ad1816chan_getcaps),
477	{ 0, 0 }
478};
479CHANNEL_DECLARE(ad1816chan);
480
481/* -------------------------------------------------------------------- */
482
483static void
484ad1816_release_resources(struct ad1816_info *ad1816, device_t dev)
485{
486    	if (ad1816->irq) {
487   		if (ad1816->ih)
488			bus_teardown_intr(dev, ad1816->irq, ad1816->ih);
489		bus_release_resource(dev, SYS_RES_IRQ, ad1816->irq_rid, ad1816->irq);
490		ad1816->irq = 0;
491    	}
492    	if (ad1816->drq1) {
493		isa_dma_release(rman_get_start(ad1816->drq1));
494		bus_release_resource(dev, SYS_RES_DRQ, ad1816->drq1_rid, ad1816->drq1);
495		ad1816->drq1 = 0;
496    	}
497    	if (ad1816->drq2) {
498		isa_dma_release(rman_get_start(ad1816->drq2));
499		bus_release_resource(dev, SYS_RES_DRQ, ad1816->drq2_rid, ad1816->drq2);
500		ad1816->drq2 = 0;
501    	}
502    	if (ad1816->io_base) {
503		bus_release_resource(dev, SYS_RES_IOPORT, ad1816->io_rid, ad1816->io_base);
504		ad1816->io_base = 0;
505    	}
506    	if (ad1816->parent_dmat) {
507		bus_dma_tag_destroy(ad1816->parent_dmat);
508		ad1816->parent_dmat = 0;
509    	}
510	if (ad1816->lock)
511		snd_mtxfree(ad1816->lock);
512
513     	free(ad1816, M_DEVBUF);
514}
515
516static int
517ad1816_alloc_resources(struct ad1816_info *ad1816, device_t dev)
518{
519    	int ok = 1, pdma, rdma;
520
521	if (!ad1816->io_base)
522    		ad1816->io_base = bus_alloc_resource_any(dev,
523			SYS_RES_IOPORT, &ad1816->io_rid, RF_ACTIVE);
524	if (!ad1816->irq)
525    		ad1816->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
526			&ad1816->irq_rid, RF_ACTIVE);
527	if (!ad1816->drq1)
528    		ad1816->drq1 = bus_alloc_resource_any(dev, SYS_RES_DRQ,
529			&ad1816->drq1_rid, RF_ACTIVE);
530    	if (!ad1816->drq2)
531        	ad1816->drq2 = bus_alloc_resource_any(dev, SYS_RES_DRQ,
532			&ad1816->drq2_rid, RF_ACTIVE);
533
534    	if (!ad1816->io_base || !ad1816->drq1 || !ad1816->irq) ok = 0;
535
536	if (ok) {
537		pdma = rman_get_start(ad1816->drq1);
538		isa_dma_acquire(pdma);
539		isa_dmainit(pdma, ad1816->bufsize);
540		if (ad1816->drq2) {
541			rdma = rman_get_start(ad1816->drq2);
542			isa_dma_acquire(rdma);
543			isa_dmainit(rdma, ad1816->bufsize);
544		} else
545			rdma = pdma;
546    		if (pdma == rdma)
547			pcm_setflags(dev, pcm_getflags(dev) | SD_F_SIMPLEX);
548	}
549
550    	return ok;
551}
552
553static int
554ad1816_init(struct ad1816_info *ad1816, device_t dev)
555{
556    	ad1816_write(ad1816, 1, 0x2);	/* disable interrupts */
557    	ad1816_write(ad1816, 32, 0x90F0);	/* SoundSys Mode, split fmt */
558
559    	ad1816_write(ad1816, 5, 0x8080);	/* FM volume mute */
560    	ad1816_write(ad1816, 6, 0x8080);	/* I2S1 volume mute */
561    	ad1816_write(ad1816, 7, 0x8080);	/* I2S0 volume mute */
562    	ad1816_write(ad1816, 17, 0x8888);	/* VID Volume mute */
563    	ad1816_write(ad1816, 20, 0x5050);	/* recsrc mic, agc off */
564    	/* adc gain is set to 0 */
565
566	return 0;
567}
568
569static int
570ad1816_probe(device_t dev)
571{
572    	char *s = NULL;
573    	u_int32_t logical_id = isa_get_logicalid(dev);
574
575    	switch (logical_id) {
576    	case 0x80719304: /* ADS7180 */
577 		s = "AD1816";
578 		break;
579    	}
580
581    	if (s) {
582		device_set_desc(dev, s);
583		return BUS_PROBE_DEFAULT;
584    	}
585    	return ENXIO;
586}
587
588static int
589ad1816_attach(device_t dev)
590{
591	struct ad1816_info *ad1816;
592    	char status[SND_STATUSLEN], status2[SND_STATUSLEN];
593
594	ad1816 = (struct ad1816_info *)malloc(sizeof *ad1816, M_DEVBUF, M_NOWAIT | M_ZERO);
595	if (!ad1816) return ENXIO;
596
597	ad1816->lock = snd_mtxcreate(device_get_nameunit(dev), "sound softc");
598	ad1816->io_rid = 2;
599	ad1816->irq_rid = 0;
600	ad1816->drq1_rid = 0;
601	ad1816->drq2_rid = 1;
602	ad1816->bufsize = pcm_getbuffersize(dev, 4096, DSP_BUFFSIZE, 65536);
603
604    	if (!ad1816_alloc_resources(ad1816, dev)) goto no;
605    	ad1816_init(ad1816, dev);
606    	if (mixer_init(dev, &ad1816mixer_class, ad1816)) goto no;
607
608	snd_setup_intr(dev, ad1816->irq, 0, ad1816_intr, ad1816, &ad1816->ih);
609    	if (bus_dma_tag_create(/*parent*/NULL, /*alignment*/2, /*boundary*/0,
610			/*lowaddr*/BUS_SPACE_MAXADDR_24BIT,
611			/*highaddr*/BUS_SPACE_MAXADDR,
612			/*filter*/NULL, /*filterarg*/NULL,
613			/*maxsize*/ad1816->bufsize, /*nsegments*/1,
614			/*maxsegz*/0x3ffff,
615			/*flags*/0, /*lockfunc*/busdma_lock_mutex,
616			/*lockarg*/ &Giant, &ad1816->parent_dmat) != 0) {
617		device_printf(dev, "unable to create dma tag\n");
618		goto no;
619    	}
620    	if (ad1816->drq2)
621		snprintf(status2, SND_STATUSLEN, ":%ld", rman_get_start(ad1816->drq2));
622	else
623		status2[0] = '\0';
624
625    	snprintf(status, SND_STATUSLEN, "at io 0x%lx irq %ld drq %ld%s bufsz %u %s",
626    	     	rman_get_start(ad1816->io_base),
627		rman_get_start(ad1816->irq),
628		rman_get_start(ad1816->drq1),
629		status2,
630		ad1816->bufsize,
631		PCM_KLDSTRING(snd_ad1816));
632
633    	if (pcm_register(dev, ad1816, 1, 1)) goto no;
634    	pcm_addchan(dev, PCMDIR_REC, &ad1816chan_class, ad1816);
635    	pcm_addchan(dev, PCMDIR_PLAY, &ad1816chan_class, ad1816);
636    	pcm_setstatus(dev, status);
637
638    	return 0;
639no:
640    	ad1816_release_resources(ad1816, dev);
641
642    	return ENXIO;
643
644}
645
646static int
647ad1816_detach(device_t dev)
648{
649	int r;
650	struct ad1816_info *ad1816;
651
652	r = pcm_unregister(dev);
653	if (r)
654		return r;
655
656	ad1816 = pcm_getdevinfo(dev);
657    	ad1816_release_resources(ad1816, dev);
658	return 0;
659}
660
661static device_method_t ad1816_methods[] = {
662	/* Device interface */
663	DEVMETHOD(device_probe,		ad1816_probe),
664	DEVMETHOD(device_attach,	ad1816_attach),
665	DEVMETHOD(device_detach,	ad1816_detach),
666
667	{ 0, 0 }
668};
669
670static driver_t ad1816_driver = {
671	"pcm",
672	ad1816_methods,
673	PCM_SOFTC_SIZE,
674};
675
676DRIVER_MODULE(snd_ad1816, isa, ad1816_driver, pcm_devclass, 0, 0);
677DRIVER_MODULE(snd_ad1816, acpi, ad1816_driver, pcm_devclass, 0, 0);
678MODULE_DEPEND(snd_ad1816, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
679MODULE_VERSION(snd_ad1816, 1);
680
681
682