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midi_pcppi.c revision 1.13 
      1 /*	$NetBSD: midi_pcppi.c,v 1.13 2006/06/30 13:56:25 chap 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 (at) 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  * 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: midi_pcppi.c,v 1.13 2006/06/30 13:56:25 chap Exp $");
     41 
     42 #include <sys/param.h>
     43 #include <sys/systm.h>
     44 #include <sys/kernel.h>
     45 #include <sys/errno.h>
     46 #include <sys/device.h>
     47 #include <sys/malloc.h>
     48 #include <sys/proc.h>
     49 #include <sys/conf.h>
     50 #include <sys/select.h>
     51 #include <sys/audioio.h>
     52 #include <sys/midiio.h>
     53 
     54 #include <machine/bus.h>
     55 
     56 #include <dev/isa/pcppivar.h>
     57 
     58 #include <dev/audio_if.h>
     59 #include <dev/midi_if.h>
     60 #include <dev/midivar.h>
     61 #include <dev/midisynvar.h>
     62 
     63 #define MAX_DURATION 30		/* turn off sound automagically after 30 s */
     64 
     65 struct midi_pcppi_softc {
     66 	struct midi_softc sc_mididev;
     67 	midisyn sc_midisyn;
     68 };
     69 
     70 int	midi_pcppi_match(struct device *, struct cfdata *, void *);
     71 void	midi_pcppi_attach(struct device *, struct device *, void *);
     72 
     73 void	midi_pcppi_on   (midisyn *, uint_fast16_t, midipitch_t, int16_t);
     74 void	midi_pcppi_off  (midisyn *, uint_fast16_t, uint_fast8_t);
     75 void	midi_pcppi_close(midisyn *);
     76 static void midi_pcppi_repitchv(midisyn *, uint_fast16_t, midipitch_t);
     77 
     78 CFATTACH_DECL(midi_pcppi, sizeof(struct midi_pcppi_softc),
     79     midi_pcppi_match, midi_pcppi_attach, NULL, NULL);
     80 
     81 struct midisyn_methods midi_pcppi_hw = {
     82 	.close    = midi_pcppi_close,
     83 	.attackv  = midi_pcppi_on,
     84 	.releasev = midi_pcppi_off,
     85 	.repitchv = midi_pcppi_repitchv,
     86 };
     87 
     88 int midi_pcppi_attached = 0;	/* Not very nice */
     89 
     90 int
     91 midi_pcppi_match(parent, match, aux)
     92 	struct device *parent;
     93 	struct cfdata *match;
     94 	void *aux;
     95 {
     96 	return (!midi_pcppi_attached);
     97 }
     98 
     99 void
    100 midi_pcppi_attach(parent, self, aux)
    101 	struct device *parent;
    102 	struct device *self;
    103 	void *aux;
    104 {
    105 	struct midi_pcppi_softc *sc = (struct midi_pcppi_softc *)self;
    106 	struct pcppi_attach_args *pa = (struct pcppi_attach_args *)aux;
    107 	midisyn *ms;
    108 
    109 	ms = &sc->sc_midisyn;
    110 	ms->mets = &midi_pcppi_hw;
    111 	strcpy(ms->name, "PC speaker");
    112 	ms->nvoice = 1;
    113 	ms->data = pa->pa_cookie;
    114 
    115 	midi_pcppi_attached++;
    116 
    117 	midisyn_attach(&sc->sc_mididev, ms);
    118 	midi_attach(&sc->sc_mididev, parent);
    119 }
    120 
    121 void
    122 midi_pcppi_on(midisyn *ms,
    123 	      uint_fast16_t voice, midipitch_t mp, int16_t level)
    124 {
    125 	pcppi_tag_t t = ms->data;
    126 
    127 	pcppi_bell(t,
    128 	           MIDIHZ18_TO_HZ(MIDIPITCH_TO_HZ18(mp)),
    129 	           MAX_DURATION * hz, 0);
    130 }
    131 
    132 void
    133 midi_pcppi_off(midisyn *ms, uint_fast16_t voice, uint_fast8_t vel)
    134 {
    135 	pcppi_tag_t t = ms->data;
    136 
    137 	/*printf("OFF %p %d\n", t, note >> 16);*/
    138 	pcppi_bell(t, 0, 0, 0);
    139 }
    140 
    141 void
    142 midi_pcppi_close(ms)
    143 	midisyn *ms;
    144 {
    145 	pcppi_tag_t t = ms->data;
    146 
    147 	/* Make sure we are quiet. */
    148 	pcppi_bell(t, 0, 0, 0);
    149 }
    150 
    151 static void
    152 midi_pcppi_repitchv(midisyn *ms, uint_fast16_t voice, midipitch_t newpitch)
    153 {
    154 	midi_pcppi_on(ms, voice, newpitch, 64);
    155 }
    156