melody.c revision 1.1 
1/*	$NetBSD: melody.c,v 1.1 1997/10/16 23:58:31 is Exp $	*/
2
3/*-
4 * Copyright (c) 1997 Ignatios Souvatzis. 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. Neither the name of the author nor the names of contributors
15 *    may be used to endorse or promote products derived from this software
16 *    without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31/*
32 * Melody audio driver.
33 *
34 * Currently, only minimum support for audio output. For audio/video
35 * synchronization, more is needed.
36 */
37
38#include <sys/types.h>
39#include <sys/param.h>
40#include <sys/systm.h>
41#include <sys/kernel.h>
42#include <sys/device.h>
43
44#include <dev/ic/tms320av110reg.h>
45#include <dev/ic/tms320av110var.h>
46
47#include <machine/bus.h>
48
49#include <amiga/dev/zbusvar.h>
50#include <amiga/amiga/isr.h>
51
52struct melody_softc {
53	struct tav_softc	sc_tav;
54	struct bus_space_tag	sc_bst_leftbyte;
55	struct isr		sc_isr;
56	caddr_t			sc_intack;
57};
58
59int melody_match __P((struct device *, struct cfdata *, void *));
60void melody_attach __P((struct device *, struct device *, void *));
61void melody_intack __P((struct tav_softc *));
62
63struct cfattach melody_ca = {
64        sizeof(struct melody_softc), melody_match, melody_attach
65};
66
67struct cfdriver melody_cd = {
68	NULL, "melody", DV_DULL
69};
70
71int
72melody_match(parent, cfp, aux)
73	struct device *parent;
74	struct cfdata *cfp;
75	void *aux;
76{
77	struct zbus_args *zap;
78
79	zap = aux;
80	if (zap->manid != 2145)
81		return (0);
82
83	if (zap->prodid != 128)
84		return (0);
85
86	return (1);
87}
88
89void
90melody_attach(parent, self, aux)
91	struct device *parent, *self;
92	void *aux;
93{
94	struct melody_softc *sc;
95	struct zbus_args *zap;
96	bus_space_tag_t iot;
97	bus_space_handle_t ioh;
98
99	sc = (struct melody_softc *)self;
100	zap = aux;
101
102	sc->sc_bst_leftbyte.base = (u_long)zap->va + 0;
103	sc->sc_bst_leftbyte.stride = 1;
104	sc->sc_intack = zap->va + 0xc000;
105
106	/* set up board specific part in sc_tav */
107
108	iot = &sc->sc_bst_leftbyte;
109
110	if (bus_space_map(iot, 0, 128, 0, &ioh)) {
111		panic("melody: cant bus_space_map");
112		/* NOTREACHED */
113	}
114	sc->sc_tav.sc_iot = iot;
115	sc->sc_tav.sc_ioh = ioh;
116	sc->sc_tav.sc_pcm_ord = 0;
117	sc->sc_tav.sc_pcm_18 = 0;
118	sc->sc_tav.sc_dif = 0;
119	sc->sc_tav.sc_pcm_div = 12;
120
121	/*
122	 * Attach option boards now. They might provide additional
123	 * functionality to our audio part.
124	 */
125
126	/* attach our audio driver */
127
128	printf(" #%d", zap->serno);
129	tms320av110_attach_mi(&sc->sc_tav);
130	sc->sc_isr.isr_ipl = 6;
131	sc->sc_isr.isr_arg = &sc->sc_tav;
132	sc->sc_isr.isr_intr = tms320av110_intr;
133	add_isr(&sc->sc_isr);
134}
135
136void
137melody_intack(p)
138	struct tav_softc *p;
139{
140	struct melody_softc *sc;
141
142	sc = (struct melody_softc *)p;
143	*sc->sc_intack = 0;
144}
145