melody.c revision 1.2 
1/*	$NetBSD: melody.c,v 1.2 1998/01/12 10:39:58 thorpej 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
67int
68melody_match(parent, cfp, aux)
69	struct device *parent;
70	struct cfdata *cfp;
71	void *aux;
72{
73	struct zbus_args *zap;
74
75	zap = aux;
76	if (zap->manid != 2145)
77		return (0);
78
79	if (zap->prodid != 128)
80		return (0);
81
82	return (1);
83}
84
85void
86melody_attach(parent, self, aux)
87	struct device *parent, *self;
88	void *aux;
89{
90	struct melody_softc *sc;
91	struct zbus_args *zap;
92	bus_space_tag_t iot;
93	bus_space_handle_t ioh;
94
95	sc = (struct melody_softc *)self;
96	zap = aux;
97
98	sc->sc_bst_leftbyte.base = (u_long)zap->va + 0;
99	sc->sc_bst_leftbyte.stride = 1;
100	sc->sc_intack = zap->va + 0xc000;
101
102	/* set up board specific part in sc_tav */
103
104	iot = &sc->sc_bst_leftbyte;
105
106	if (bus_space_map(iot, 0, 128, 0, &ioh)) {
107		panic("melody: cant bus_space_map");
108		/* NOTREACHED */
109	}
110	sc->sc_tav.sc_iot = iot;
111	sc->sc_tav.sc_ioh = ioh;
112	sc->sc_tav.sc_pcm_ord = 0;
113	sc->sc_tav.sc_pcm_18 = 0;
114	sc->sc_tav.sc_dif = 0;
115	sc->sc_tav.sc_pcm_div = 12;
116
117	/*
118	 * Attach option boards now. They might provide additional
119	 * functionality to our audio part.
120	 */
121
122	/* attach our audio driver */
123
124	printf(" #%d", zap->serno);
125	tms320av110_attach_mi(&sc->sc_tav);
126	sc->sc_isr.isr_ipl = 6;
127	sc->sc_isr.isr_arg = &sc->sc_tav;
128	sc->sc_isr.isr_intr = tms320av110_intr;
129	add_isr(&sc->sc_isr);
130}
131
132void
133melody_intack(p)
134	struct tav_softc *p;
135{
136	struct melody_softc *sc;
137
138	sc = (struct melody_softc *)p;
139	*sc->sc_intack = 0;
140}
141