midi_pcppi.c revision 1.22 
1/*	$NetBSD: midi_pcppi.c,v 1.22 2009/04/08 00:12:27 dyoung Exp $	*/
2
3/*
4 * Copyright (c) 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Lennart Augustsson (augustss@NetBSD.org).
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 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__KERNEL_RCSID(0, "$NetBSD: midi_pcppi.c,v 1.22 2009/04/08 00:12:27 dyoung Exp $");
34
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/kernel.h>
38#include <sys/errno.h>
39#include <sys/device.h>
40#include <sys/malloc.h>
41#include <sys/proc.h>
42#include <sys/conf.h>
43#include <sys/select.h>
44#include <sys/audioio.h>
45#include <sys/midiio.h>
46
47#include <sys/bus.h>
48
49#include <dev/isa/pcppivar.h>
50
51#include <dev/audio_if.h>
52#include <dev/midi_if.h>
53#include <dev/midivar.h>
54#include <dev/midisynvar.h>
55
56#define MAX_DURATION 30		/* turn off sound automagically after 30 s */
57
58struct midi_pcppi_softc {
59	struct midi_softc sc_mididev;
60	midisyn sc_midisyn;
61};
62
63static int	midi_pcppi_match(device_t, cfdata_t , void *);
64static void	midi_pcppi_attach(device_t, device_t, void *);
65
66void	midi_pcppi_on   (midisyn *, uint_fast16_t, midipitch_t, int16_t);
67void	midi_pcppi_off  (midisyn *, uint_fast16_t, uint_fast8_t);
68void	midi_pcppi_close(midisyn *);
69static void midi_pcppi_repitchv(midisyn *, uint_fast16_t, midipitch_t);
70
71CFATTACH_DECL3_NEW(midi_pcppi, sizeof(struct midi_pcppi_softc),
72    midi_pcppi_match, midi_pcppi_attach, mididetach, NULL, NULL, NULL,
73    DVF_DETACH_SHUTDOWN);
74
75struct midisyn_methods midi_pcppi_hw = {
76	.close    = midi_pcppi_close,
77	.attackv  = midi_pcppi_on,
78	.releasev = midi_pcppi_off,
79	.repitchv = midi_pcppi_repitchv,
80};
81
82int midi_pcppi_attached = 0;	/* Not very nice */
83
84static int
85midi_pcppi_match(device_t parent, cfdata_t match, void *aux)
86{
87	return (!midi_pcppi_attached);
88}
89
90static void
91midi_pcppi_attach(device_t parent, device_t self, void *aux)
92{
93	struct midi_pcppi_softc *sc = device_private(self);
94	struct pcppi_attach_args *pa = (struct pcppi_attach_args *)aux;
95	midisyn *ms;
96
97	KASSERT(midi_pcppi_attached > 0);
98
99	midi_pcppi_attached--;
100
101	sc->sc_mididev.dev = self;
102	ms = &sc->sc_midisyn;
103	ms->mets = &midi_pcppi_hw;
104	strcpy(ms->name, "PC speaker");
105	ms->nvoice = 1;
106	ms->data = pa->pa_cookie;
107
108	midi_pcppi_attached++;
109
110	midisyn_attach(&sc->sc_mididev, ms);
111	midi_attach(&sc->sc_mididev, parent);
112        if (!device_pmf_is_registered(self))
113		if (!pmf_device_register(self, NULL, NULL))
114			aprint_error_dev(self,
115			    "couldn't establish power handler\n");
116}
117
118void
119midi_pcppi_on(midisyn *ms,
120    uint_fast16_t voice, midipitch_t mp, int16_t level)
121{
122	pcppi_tag_t t = ms->data;
123
124	pcppi_bell(t,
125	           MIDIHZ18_TO_HZ(MIDIPITCH_TO_HZ18(mp)),
126	           MAX_DURATION * hz, 0);
127}
128
129void
130midi_pcppi_off(midisyn *ms, uint_fast16_t voice, uint_fast8_t vel)
131{
132	pcppi_tag_t t = ms->data;
133
134	/*printf("OFF %p %d\n", t, note >> 16);*/
135	pcppi_bell(t, 0, 0, 0);
136}
137
138void
139midi_pcppi_close(midisyn *ms)
140{
141	pcppi_tag_t t = ms->data;
142
143	/* Make sure we are quiet. */
144	pcppi_bell(t, 0, 0, 0);
145}
146
147static void
148midi_pcppi_repitchv(midisyn *ms, uint_fast16_t voice, midipitch_t newpitch)
149{
150	midi_pcppi_on(ms, voice, newpitch, 64);
151}
152