Annotation of sys/arch/macppc/dev/daca.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: daca.c,v 1.4 2007/04/23 16:27:20 deraadt Exp $ */
2: /* $Id: daca.c,v 1.4 2007/04/23 16:27:20 deraadt 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 */
58: int kiic_write(struct device *, int, int, const void *, int);
59: int kiic_writereg(struct device *, int, u_int);
60:
61: int daca_getdev(void *, struct audio_device *);
62: int daca_match(struct device *, void *, void *);
63: void daca_attach(struct device *, struct device *, void *);
64: void daca_defer(struct device *);
65: void daca_init(struct daca_softc *);
66: void daca_set_volume(struct daca_softc *, int, int);
67:
68: struct cfattach daca_ca = {
69: sizeof(struct daca_softc), daca_match, daca_attach
70: };
71:
72: struct cfdriver daca_cd = {
73: NULL, "daca", DV_DULL
74: };
75:
76: struct audio_hw_if daca_hw_if = {
77: i2s_open,
78: i2s_close,
79: NULL,
80: i2s_query_encoding,
81: i2s_set_params,
82: i2s_round_blocksize,
83: NULL,
84: NULL,
85: NULL,
86: NULL,
87: NULL,
88: i2s_halt_output,
89: i2s_halt_input,
90: NULL,
91: daca_getdev,
92: NULL,
93: i2s_set_port,
94: i2s_get_port,
95: i2s_query_devinfo,
96: i2s_allocm, /* allocm */
97: NULL,
98: i2s_round_buffersize,
99: i2s_mappage,
100: i2s_get_props,
101: i2s_trigger_output,
102: i2s_trigger_input,
103: };
104:
105: struct audio_device daca_device = {
106: "DACA",
107: "",
108: "daca"
109: };
110:
111: /* DAC3550A registers */
112: #define DEQ_SR 0x01 /* Sample rate control (8) */
113: #define DEQ_AVOL 0x02 /* Analog volume (16) */
114: #define DEQ_GCFG 0x03 /* Global configuration (8) */
115:
116: int
117: daca_match(struct device *parent, void *match, void *aux)
118: {
119: struct confargs *ca = aux;
120: int soundbus, soundchip;
121: char compat[32];
122:
123: if (strcmp(ca->ca_name, "i2s") != 0)
124: return (0);
125:
126: if ((soundbus = OF_child(ca->ca_node)) == 0 ||
127: (soundchip = OF_child(soundbus)) == 0)
128: return (0);
129:
130: bzero(compat, sizeof compat);
131: OF_getprop(soundchip, "compatible", compat, sizeof compat);
132:
133: if (strcmp(compat, "daca") != 0)
134: return (0);
135:
136: return (1);
137: }
138:
139: #define DEQaddr 0x9a
140:
141: void
142: daca_attach(struct device *parent,struct device *self, void *aux)
143: {
144: struct daca_softc *sc = (struct daca_softc *)self;
145:
146: sc->sc_setvolume = daca_set_volume;
147:
148: i2s_attach(parent, sc, aux);
149: config_defer(self, daca_defer);
150: }
151:
152: void
153: daca_defer(struct device *dev)
154: {
155: struct daca_softc *sc = (struct daca_softc *)dev;
156: struct device *dv;
157:
158: TAILQ_FOREACH(dv, &alldevs, dv_list)
159: if (strncmp(dv->dv_xname, "kiic", 4) == 0 &&
160: strncmp(dv->dv_parent->dv_xname, "macobio", 7) == 0)
161: sc->sc_i2c = dv;
162: if (sc->sc_i2c == NULL) {
163: printf("%s: unable to find i2c\n", sc->sc_dev.dv_xname);
164: return;
165: }
166:
167: /* XXX If i2c has failed to attach, what should we do? */
168:
169: audio_attach_mi(&daca_hw_if, sc, &sc->sc_dev);
170:
171: daca_init(sc);
172: }
173:
174: void
175: daca_init(struct daca_softc *sc)
176: {
177: i2s_set_rate(sc, 44100);
178: kiic_writereg(sc->sc_i2c, 4, 0x01 | 0x02 | 0x04);
179: }
180:
181: int
182: daca_getdev(void *h, struct audio_device *retp)
183: {
184: *retp = daca_device;
185: return (0);
186: }
187:
188: void
189: daca_set_volume(struct daca_softc *sc, int left, int right)
190: {
191: u_int16_t data;
192:
193: sc->sc_vol_l = left;
194: sc->sc_vol_r = right;
195:
196: left >>= 2;
197: right >>= 2;
198: data = left << 8 | right;
199: kiic_write(sc->sc_i2c, DEQaddr, DEQ_AVOL, &data, 2);
200: }
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