1/* $NetBSD: ym2149.c,v 1.5 2009/10/20 19:10:11 snj Exp $ */ 2 3/* 4 * Copyright (c) 1996 Leo Weppelman. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28#include <sys/cdefs.h> 29__KERNEL_RCSID(0, "$NetBSD: ym2149.c,v 1.5 2009/10/20 19:10:11 snj Exp $"); 30 31#include <sys/param.h> 32#include <sys/systm.h> 33#include <machine/iomap.h> 34#include <atari/dev/ym2149reg.h> 35 36/* 37 * Yahama YM-2149 Programmable Sound Generator 38 * 39 * For now only an init function is here... 40 */ 41u_char ym2149_ioa; /* Soft-copy of port-A */ 42 43void 44ym2149_init(void) 45{ 46 /* 47 * Initialize the sound-chip YM2149: 48 * All sounds off, both I/O ports output. 49 */ 50 YM2149->sd_selr = YM_MFR; 51 YM2149->sd_wdat = 0xff; 52 53 /* 54 * Sensible value for ioa: 55 */ 56 YM2149->sd_selr = YM_IOA; 57 YM2149->sd_wdat = ym2149_ioa = PA_FDSEL|PA_PSTROBE; 58} 59