melody.c revision 1.12 
1/*	$NetBSD: melody.c,v 1.12 2007/03/04 05:59:23 christos Exp $ */
2
3/*-
4 * Copyright (c) 1997 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Ignatios Souvatzis.
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: melody.c,v 1.12 2007/03/04 05:59:23 christos Exp $");
41
42/*
43 * Melody audio driver.
44 *
45 * Currently, only minimum support for audio output. For audio/video
46 * synchronization, more is needed.
47 */
48
49#include <sys/types.h>
50#include <sys/param.h>
51#include <sys/systm.h>
52#include <sys/kernel.h>
53#include <sys/device.h>
54
55#include <dev/ic/tms320av110reg.h>
56#include <dev/ic/tms320av110var.h>
57
58#include <machine/bus.h>
59
60#include <amiga/dev/zbusvar.h>
61#include <amiga/amiga/isr.h>
62
63struct melody_softc {
64	struct tav_softc	sc_tav;
65	struct bus_space_tag	sc_bst_leftbyte;
66	struct isr		sc_isr;
67	void *			sc_intack;
68};
69
70int melody_match(struct device *, struct cfdata *, void *);
71void melody_attach(struct device *, struct device *, void *);
72void melody_intack(struct tav_softc *);
73
74CFATTACH_DECL(melody, sizeof(struct melody_softc),
75    melody_match, melody_attach, NULL, NULL);
76
77int
78melody_match(struct device *parent, struct cfdata *cfp, void *aux)
79{
80	struct zbus_args *zap;
81
82	zap = aux;
83	if (zap->manid != 2145)
84		return (0);
85
86	if (zap->prodid != 128)
87		return (0);
88
89	return (1);
90}
91
92void
93melody_attach(struct device *parent, struct device *self, void *aux)
94{
95	struct melody_softc *sc;
96	struct zbus_args *zap;
97	bus_space_tag_t iot;
98	bus_space_handle_t ioh;
99
100	sc = (struct melody_softc *)self;
101	zap = aux;
102
103	sc->sc_bst_leftbyte.base = (u_long)zap->va + 0;
104	sc->sc_bst_leftbyte.absm = &amiga_bus_stride_2;
105	sc->sc_intack = (void *)zap->va + 0xc000;
106
107	/* set up board specific part in sc_tav */
108
109	iot = &sc->sc_bst_leftbyte;
110
111	if (bus_space_map(iot, 0, 128, 0, &ioh)) {
112		panic("melody: cant bus_space_map");
113		/* NOTREACHED */
114	}
115	sc->sc_tav.sc_iot = iot;
116	sc->sc_tav.sc_ioh = ioh;
117	sc->sc_tav.sc_pcm_ord = 0;
118	sc->sc_tav.sc_pcm_18 = 0;
119	sc->sc_tav.sc_dif = 0;
120	sc->sc_tav.sc_pcm_div = 12;
121
122	/*
123	 * Attach option boards now. They might provide additional
124	 * functionality to our audio part.
125	 */
126
127	/* attach our audio driver */
128
129	printf(" #%d", zap->serno);
130	tms320av110_attach_mi(&sc->sc_tav);
131	sc->sc_isr.isr_ipl = 6;
132	sc->sc_isr.isr_arg = &sc->sc_tav;
133	sc->sc_isr.isr_intr = tms320av110_intr;
134	add_isr(&sc->sc_isr);
135}
136
137void
138melody_intack(struct tav_softc *p)
139{
140	struct melody_softc *sc;
141
142	sc = (struct melody_softc *)p;
143	*sc->sc_intack = 0;
144}
145