sys/arch/amiga/dev/melody.c

   1 /*      $NetBSD: melody.c,v 1.14 2007/10/17 19:53:17 garbled Exp $ */
   2
   3 /*-
   4  * Copyright (c) 1997 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Ignatios Souvatzis.
   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: melody.c,v 1.14 2007/10/17 19:53:17 garbled Exp $");
  34
  35 /*
  36  * Melody audio driver.
  37  *
  38  * Currently, only minimum support for audio output. For audio/video
  39  * synchronization, more is needed.
  40  */
  41
  42 #include <sys/types.h>
  43 #include <sys/param.h>
  44 #include <sys/systm.h>
  45 #include <sys/kernel.h>
  46 #include <sys/device.h>
  47
  48 #include <dev/ic/tms320av110reg.h>
  49 #include <dev/ic/tms320av110var.h>
  50
  51 #include <machine/bus.h>
  52
  53 #include <amiga/dev/zbusvar.h>
  54 #include <amiga/amiga/isr.h>
  55
  56 struct melody_softc {
  57         struct tav_softc        sc_tav;
  58         struct bus_space_tag    sc_bst_leftbyte;
  59         struct isr              sc_isr;
  60         uint8_t *               sc_intack;
  61 };
  62
  63 int melody_match(struct device *, struct cfdata *, void *);
  64 void melody_attach(struct device *, struct device *, void *);
  65 void melody_intack(struct tav_softc *);
  66
  67 CFATTACH_DECL(melody, sizeof(struct melody_softc),
  68     melody_match, melody_attach, NULL, NULL);
  69
  70 int
  71 melody_match(struct device *parent, struct cfdata *cfp, 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
  85 void
  86 melody_attach(struct device *parent, struct device *self, void *aux)
  87 {
  88         struct melody_softc *sc;
  89         struct zbus_args *zap;
  90         bus_space_tag_t iot;
  91         bus_space_handle_t ioh;
  92
  93         sc = (struct melody_softc *)self;
  94         zap = aux;
  95
  96         sc->sc_bst_leftbyte.base = (u_long)zap->va + 0;
  97         sc->sc_bst_leftbyte.absm = &amiga_bus_stride_2;
  98         sc->sc_intack = (uint8_t *)zap->va + 0xc000;
  99
 100         /* set up board specific part in sc_tav */
 101
 102         iot = &sc->sc_bst_leftbyte;
 103
 104         if (bus_space_map(iot, 0, 128, 0, &ioh)) {
 105                 panic("melody: cant bus_space_map");
 106                 /* NOTREACHED */
 107         }
 108         sc->sc_tav.sc_iot = iot;
 109         sc->sc_tav.sc_ioh = ioh;
 110         sc->sc_tav.sc_pcm_ord = 0;
 111         sc->sc_tav.sc_pcm_18 = 0;
 112         sc->sc_tav.sc_dif = 0;
 113         sc->sc_tav.sc_pcm_div = 12;
 114
 115         /*
 116          * Attach option boards now. They might provide additional
 117          * functionality to our audio part.
 118          */
 119
 120         /* attach our audio driver */
 121
 122         printf(" #%d", zap->serno);
 123         tms320av110_attach_mi(&sc->sc_tav);
 124         sc->sc_isr.isr_ipl = 6;
 125         sc->sc_isr.isr_arg = &sc->sc_tav;
 126         sc->sc_isr.isr_intr = tms320av110_intr;
 127         add_isr(&sc->sc_isr);
 128 }
 129
 130 void
 131 melody_intack(struct tav_softc *p)
 132 {
 133         struct melody_softc *sc;
 134
 135         sc = (struct melody_softc *)p;
 136         *sc->sc_intack = 0;
 137 }