Annotation of sys/arch/macppc/dev/onyx.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: onyx.c,v 1.7 2007/04/23 16:27:20 deraadt Exp $ */
2:
3: /*-
4: * Copyright (c) 2005 Tsubai Masanari. All rights reserved.
5: *
6: * Redistribution and use in source and binary forms, with or without
7: * modification, are permitted provided that the following conditions
8: * are met:
9: * 1. Redistributions of source code must retain the above copyright
10: * notice, this list of conditions and the following disclaimer.
11: * 2. Redistributions in binary form must reproduce the above copyright
12: * notice, this list of conditions and the following disclaimer in the
13: * documentation and/or other materials provided with the distribution.
14: * 3. The name of the author may not be used to endorse or promote products
15: * derived from this software without specific prior written permission.
16: *
17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26: * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27: */
28:
29: /*
30: * http://focus.ti.com/docs/prod/folders/print/pcm3052.html
31: *
32: * Datasheet is available from
33: * http://focus.ti.com/docs/prod/folders/print/pcm3052a.html
34: */
35:
36: #include <sys/param.h>
37: #include <sys/audioio.h>
38: #include <sys/device.h>
39: #include <sys/systm.h>
40:
41: #include <dev/audio_if.h>
42: #include <dev/ofw/openfirm.h>
43: #include <macppc/dev/dbdma.h>
44:
45: #include <machine/autoconf.h>
46:
47: #include <macppc/dev/i2svar.h>
48: #include <macppc/dev/kiicvar.h>
49:
50: #ifdef ONYX_DEBUG
51: # define DPRINTF printf
52: #else
53: # define DPRINTF while (0) printf
54: #endif
55:
56: /* XXX */
57: #define PCM3052_I2C_ADDR 0x8c
58:
59: /* PCM3052 registers */
60: #define PCM3052_REG_LEFT_VOLUME 0x41
61: #define PCM3052_REG_RIGHT_VOLUME 0x42
62:
63: /* XXX */
64: #define onyx_softc i2s_softc
65:
66: /* XXX */
67: void kiic_setmode(struct kiic_softc *, u_int, u_int);
68: int kiic_write(struct device *, int, int, const void *, int);
69:
70: int onyx_getdev(void *, struct audio_device *);
71: int onyx_match(struct device *, void *, void *);
72: void onyx_attach(struct device *, struct device *, void *);
73: void onyx_defer(struct device *);
74: void onyx_set_volume(struct onyx_softc *, int, int);
75:
76: struct cfattach onyx_ca = {
77: sizeof(struct onyx_softc), onyx_match, onyx_attach
78: };
79:
80: struct cfdriver onyx_cd = {
81: NULL, "onyx", DV_DULL
82: };
83:
84: struct audio_hw_if onyx_hw_if = {
85: i2s_open,
86: i2s_close,
87: NULL,
88: i2s_query_encoding,
89: i2s_set_params,
90: i2s_round_blocksize,
91: NULL,
92: NULL,
93: NULL,
94: NULL,
95: NULL,
96: i2s_halt_output,
97: i2s_halt_input,
98: NULL,
99: onyx_getdev,
100: NULL,
101: i2s_set_port,
102: i2s_get_port,
103: i2s_query_devinfo,
104: i2s_allocm,
105: NULL,
106: i2s_round_buffersize,
107: i2s_mappage,
108: i2s_get_props,
109: i2s_trigger_output,
110: i2s_trigger_input,
111: };
112:
113: struct audio_device onyx_device = {
114: "ONYX",
115: "",
116: "onyx"
117: };
118:
119: int
120: onyx_match(struct device *parent, void *match, void *aux)
121: {
122: struct confargs *ca = aux;
123: int soundbus, soundchip, soundcodec;
124: int32_t layout = 0;
125:
126: if (strcmp(ca->ca_name, "i2s") != 0)
127: return (0);
128:
129: if ((soundbus = OF_child(ca->ca_node)) == 0 ||
130: (soundchip = OF_child(soundbus)) == 0)
131: return (0);
132:
133: if (OF_getprop(soundchip, "platform-onyx-codec-ref",
134: &soundcodec, sizeof soundcodec) == sizeof soundcodec)
135: return (1);
136:
137: /*
138: * Apple really messed up. First and second generation iMac
139: * G5 (PowerMac8,1 and PowerMac8,2) have a "deq" i2c device
140: * listed in the OF device tree, which is a telltale sign of
141: * snapper(4). But in reality that chip isn't there. So we
142: * match on "layout-id" instead.
143: */
144: if (OF_getprop(soundchip, "layout-id", &layout, sizeof layout) &&
145: (layout == 0x2d || layout == 0x56))
146: return (1);
147:
148: return (0);
149: }
150:
151: void
152: onyx_attach(struct device *parent, struct device *self, void *aux)
153: {
154: struct onyx_softc *sc = (struct onyx_softc *)self;
155:
156: sc->sc_setvolume = onyx_set_volume;
157:
158: i2s_attach(parent, sc, aux);
159: config_defer(self, onyx_defer);
160: }
161:
162: void
163: onyx_defer(struct device *dev)
164: {
165: struct onyx_softc *sc = (struct onyx_softc *)dev;
166: struct device *dv;
167:
168: TAILQ_FOREACH(dv, &alldevs, dv_list)
169: if (strncmp(dv->dv_xname, "kiic", 4) == 0 &&
170: strncmp(dv->dv_parent->dv_xname, "macobio", 7) == 0)
171: sc->sc_i2c = dv;
172: if (sc->sc_i2c == NULL) {
173: printf("%s: unable to find i2c\n", sc->sc_dev.dv_xname);
174: return;
175: }
176:
177: /* XXX If i2c has failed to attach, what should we do? */
178:
179: audio_attach_mi(&onyx_hw_if, sc, &sc->sc_dev);
180:
181: deq_reset(sc);
182: onyx_set_volume(sc, 192, 192);
183: }
184:
185: int
186: onyx_getdev(void *h, struct audio_device *retp)
187: {
188: *retp = onyx_device;
189: return (0);
190: }
191:
192: void
193: onyx_set_volume(struct onyx_softc *sc, int left, int right)
194: {
195: u_int8_t data;
196:
197: sc->sc_vol_l = left;
198: sc->sc_vol_r = right;
199:
200: kiic_setmode(sc->sc_i2c, I2C_STDSUBMODE, 0);
201: data = 128 + (left >> 1);
202: kiic_write(sc->sc_i2c, PCM3052_I2C_ADDR,
203: PCM3052_REG_LEFT_VOLUME, &data, 1);
204: data = 128 + (right >> 1);
205: kiic_write(sc->sc_i2c, PCM3052_I2C_ADDR,
206: PCM3052_REG_RIGHT_VOLUME, &data, 1);
207: }
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