sys/dev/isa/midi_pcppi.c

   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
  58 struct midi_pcppi_softc {
  59         struct midi_softc sc_mididev;
  60         midisyn sc_midisyn;
  61 };
  62
  63 static int      midi_pcppi_match(device_t, cfdata_t , void *);
  64 static void     midi_pcppi_attach(device_t, device_t, void *);
  65 static int      midi_pcppi_detach(device_t, int);
  66
  67 void    midi_pcppi_on   (midisyn *, uint_fast16_t, midipitch_t, int16_t);
  68 void    midi_pcppi_off  (midisyn *, uint_fast16_t, uint_fast8_t);
  69 void    midi_pcppi_close(midisyn *);
  70 static void midi_pcppi_repitchv(midisyn *, uint_fast16_t, midipitch_t);
  71
  72 CFATTACH_DECL3_NEW(midi_pcppi, sizeof(struct midi_pcppi_softc),
  73     midi_pcppi_match, midi_pcppi_attach, midi_pcppi_detach, NULL, NULL, NULL,
  74     DVF_DETACH_SHUTDOWN);
  75
  76 struct midisyn_methods midi_pcppi_hw = {
  77         .close    = midi_pcppi_close,
  78         .attackv  = midi_pcppi_on,
  79         .releasev = midi_pcppi_off,
  80         .repitchv = midi_pcppi_repitchv,
  81 };
  82
  83 int midi_pcppi_attached = 0;    /* Not very nice */
  84
  85 static int
  86 midi_pcppi_match(device_t parent, cfdata_t match, void *aux)
  87 {
  88         return (!midi_pcppi_attached);
  89 }
  90
  91 static void
  92 midi_pcppi_attach(device_t parent, device_t self, void *aux)
  93 {
  94         struct midi_pcppi_softc *sc = device_private(self);
  95         struct pcppi_attach_args *pa = (struct pcppi_attach_args *)aux;
  96         midisyn *ms;
  97
  98         sc->sc_mididev.dev = self;
  99         ms = &sc->sc_midisyn;
 100         ms->mets = &midi_pcppi_hw;
 101         strcpy(ms->name, "PC speaker");
 102         ms->nvoice = 1;
 103         ms->data = pa->pa_cookie;
 104
 105         midi_pcppi_attached++;
 106
 107         midisyn_attach(&sc->sc_mididev, ms);
 108         midi_attach(&sc->sc_mididev, parent);
 109         if (!device_pmf_is_registered(self))
 110                 if (!pmf_device_register(self, NULL, NULL))
 111                         aprint_error_dev(self,
 112                             "couldn't establish power handler\n");
 113 }
 114
 115 static int
 116 midi_pcppi_detach(device_t self, int flags)
 117 {
 118         KASSERT(midi_pcppi_attached > 0);
 119
 120         midi_pcppi_attached--;
 121         return mididetach(self, flags);
 122 }
 123
 124 void
 125 midi_pcppi_on(midisyn *ms,
 126     uint_fast16_t voice, midipitch_t mp, int16_t level)
 127 {
 128         pcppi_tag_t t = ms->data;
 129
 130         pcppi_bell(t,
 131                    MIDIHZ18_TO_HZ(MIDIPITCH_TO_HZ18(mp)),
 132                    MAX_DURATION * hz, 0);
 133 }
 134
 135 void
 136 midi_pcppi_off(midisyn *ms, uint_fast16_t voice, uint_fast8_t vel)
 137 {
 138         pcppi_tag_t t = ms->data;
 139
 140         /*printf("OFF %p %d\n", t, note >> 16);*/
 141         pcppi_bell(t, 0, 0, 0);
 142 }
 143
 144 void
 145 midi_pcppi_close(midisyn *ms)
 146 {
 147         pcppi_tag_t t = ms->data;
 148
 149         /* Make sure we are quiet. */
 150         pcppi_bell(t, 0, 0, 0);
 151 }
 152
 153 static void
 154 midi_pcppi_repitchv(midisyn *ms, uint_fast16_t voice, midipitch_t newpitch)
 155 {
 156         midi_pcppi_on(ms, voice, newpitch, 64);
 157 }