daca.c revision 1.6 
1/*	$OpenBSD: daca.c,v 1.6 2008/10/29 00:04:14 jakemsr Exp $	*/
2/*	$Id: daca.c,v 1.6 2008/10/29 00:04:14 jakemsr Exp $	*/
3
4/*-
5 * Copyright (c) 2002,2003 Tsubai Masanari.  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 * 3. The name of the author may not be used to endorse or promote products
16 *    derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30/*
31 * Datasheet is available from
32 * http://www.indata.si/grega/pdfs/dac3550a.pdf
33 */
34
35#include <sys/param.h>
36#include <sys/audioio.h>
37#include <sys/device.h>
38#include <sys/systm.h>
39
40#include <dev/audio_if.h>
41#include <dev/ofw/openfirm.h>
42#include <macppc/dev/dbdma.h>
43
44#include <machine/autoconf.h>
45
46#include <macppc/dev/i2svar.h>
47
48#ifdef DACA_DEBUG
49# define DPRINTF printf
50#else
51# define DPRINTF while (0) printf
52#endif
53
54/* XXX */
55#define daca_softc i2s_softc
56
57/* XXX */
58int kiic_write(struct device *, int, int, const void *, int);
59int kiic_writereg(struct device *, int, u_int);
60
61int daca_getdev(void *, struct audio_device *);
62int daca_match(struct device *, void *, void *);
63void daca_attach(struct device *, struct device *, void *);
64void daca_defer(struct device *);
65void daca_init(struct daca_softc *);
66void daca_set_volume(struct daca_softc *, int, int);
67void daca_get_default_params(void *, int, struct audio_params *);
68
69struct cfattach daca_ca = {
70	sizeof(struct daca_softc), daca_match, daca_attach
71};
72
73struct cfdriver daca_cd = {
74	NULL, "daca", DV_DULL
75};
76
77struct audio_hw_if daca_hw_if = {
78	i2s_open,
79	i2s_close,
80	NULL,
81	i2s_query_encoding,
82	i2s_set_params,
83	i2s_round_blocksize,
84	NULL,
85	NULL,
86	NULL,
87	NULL,
88	NULL,
89	i2s_halt_output,
90	i2s_halt_input,
91	NULL,
92	daca_getdev,
93	NULL,
94	i2s_set_port,
95	i2s_get_port,
96	i2s_query_devinfo,
97	i2s_allocm,		/* allocm */
98	NULL,
99	i2s_round_buffersize,
100	i2s_mappage,
101	i2s_get_props,
102	i2s_trigger_output,
103	i2s_trigger_input,
104	daca_get_default_params
105};
106
107struct audio_device daca_device = {
108	"DACA",
109	"",
110	"daca"
111};
112
113/* DAC3550A registers */
114#define DEQ_SR		0x01	/* Sample rate control (8) */
115#define DEQ_AVOL	0x02	/* Analog volume (16) */
116#define DEQ_GCFG	0x03	/* Global configuration (8) */
117
118int
119daca_match(struct device *parent, void *match, void *aux)
120{
121	struct confargs *ca = aux;
122	int soundbus, soundchip;
123	char compat[32];
124
125	if (strcmp(ca->ca_name, "i2s") != 0)
126		return (0);
127
128	if ((soundbus = OF_child(ca->ca_node)) == 0 ||
129	    (soundchip = OF_child(soundbus)) == 0)
130		return (0);
131
132	bzero(compat, sizeof compat);
133	OF_getprop(soundchip, "compatible", compat, sizeof compat);
134
135	if (strcmp(compat, "daca") != 0)
136		return (0);
137
138	return (1);
139}
140
141#define DEQaddr 0x9a
142
143void
144daca_attach(struct device *parent,struct device *self, void *aux)
145{
146	struct daca_softc *sc = (struct daca_softc *)self;
147
148	sc->sc_setvolume = daca_set_volume;
149
150	i2s_attach(parent, sc, aux);
151	config_defer(self, daca_defer);
152}
153
154void
155daca_defer(struct device *dev)
156{
157	struct daca_softc *sc = (struct daca_softc *)dev;
158	struct device *dv;
159
160	TAILQ_FOREACH(dv, &alldevs, dv_list)
161		if (strncmp(dv->dv_xname, "kiic", 4) == 0 &&
162		    strncmp(dv->dv_parent->dv_xname, "macobio", 7) == 0)
163			sc->sc_i2c = dv;
164	if (sc->sc_i2c == NULL) {
165		printf("%s: unable to find i2c\n", sc->sc_dev.dv_xname);
166		return;
167	}
168
169	/* XXX If i2c has failed to attach, what should we do? */
170
171	audio_attach_mi(&daca_hw_if, sc, &sc->sc_dev);
172
173	daca_init(sc);
174}
175
176void
177daca_init(struct daca_softc *sc)
178{
179	i2s_set_rate(sc, 44100);
180	kiic_writereg(sc->sc_i2c, 4, 0x01 | 0x02 | 0x04);
181}
182
183int
184daca_getdev(void *h, struct audio_device *retp)
185{
186	*retp = daca_device;
187	return (0);
188}
189
190void
191daca_set_volume(struct daca_softc *sc, int left, int right)
192{
193	u_int16_t data;
194
195	sc->sc_vol_l = left;
196	sc->sc_vol_r = right;
197
198	left >>= 2;
199	right >>= 2;
200	data = left << 8 | right;
201	kiic_write(sc->sc_i2c, DEQaddr, DEQ_AVOL, &data, 2);
202}
203
204void
205daca_get_default_params(void *addr, int mode, struct audio_params *params)
206{
207	i2s_get_default_params(params);
208}
209