xref: /src/sys/arch/x68k/dev/opm.c

/*	$NetBSD: opm.c,v 1.5 1999/03/24 14:07:39 minoura Exp $	*/

/*
 * Copyright (c) 1995 Masanobu Saitoh, Takuya Harakawa.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by Masanobu Saitoh.
 * 4. Neither the name of the University nor of the Laboratory may be used
 *    to endorse or promote products derived from this software without
 *    specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/*
 * Temporary implementation: not fully bus.h'fied.
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>

#include <machine/bus.h>
#include <machine/cpu.h>

#include <arch/x68k/dev/opmreg.h>
#include <arch/x68k/dev/intiovar.h>

struct opm_softc {
	struct device		sc_dev;

	bus_space_tag_t		sc_bst;
	bus_space_handle_t	sc_bht;
	u_int8_t		sc_regs[0x100];
	struct opm_voice	sc_vdata[8];
};

struct opm_softc	*opm0;	/* XXX */

static int opm_match __P((struct device *, struct cfdata *, void *));
static void opm_attach __P((struct device *, struct device *, void *));

struct cfattach opm_ca = {
	sizeof (struct opm_softc), opm_match, opm_attach
};

static int
opm_match(parent, cf, aux)
	struct device *parent;
	struct cfdata *cf;
	void *aux;
{
	struct intio_attach_args *ia = aux;

	if (strcmp(ia->ia_name, "opm") != 0)
		return 0;

	if (ia->ia_addr == INTIOCF_ADDR_DEFAULT)
		ia->ia_addr = 0xe90000;
	ia->ia_size = 0x2000;
	if (intio_map_allocate_region (parent, ia, INTIO_MAP_TESTONLY))
		return 0;

	return 1;
}

static void
opm_attach(parent, self, aux)
	struct device *parent, *self;
	void *aux;
{
	struct opm_softc *sc = (struct opm_softc *)self;
	struct intio_attach_args *ia = aux;
	int r;

	printf ("\n");
	ia->ia_size = 0x2000;
	r = intio_map_allocate_region (parent, ia, INTIO_MAP_ALLOCATE);
#ifdef DIAGNOSTIC
	if (r)
		panic ("IO map for OPM corruption??");
#endif

	sc->sc_bst = ia->ia_bst;
	r = bus_space_map (sc->sc_bst,
			   ia->ia_addr, ia->ia_size,
			   BUS_SPACE_MAP_SHIFTED,
			   &sc->sc_bht);
#ifdef DIAGNOSTIC
	if (r)
		panic ("Cannot map IO space for OPM.");
#endif

	if (sc->sc_dev.dv_unit == 0)
		opm0 = sc;	/* XXX */

	return;
}

void opm_set_volume __P((int, int));
void opm_set_key __P((int, int));
void opm_set_voice __P((int, struct opm_voice *));
void opm_set_voice_sub __P((int, struct opm_operator *));
__inline static void writeopm __P((int, int));
__inline static int readopm __P((int));
void opm_key_on __P((u_char));
void opm_key_off __P((u_char));
int opmopen __P((dev_t, int, int));
int opmclose __P((dev_t));

__inline static void
writeopm(reg, dat)
	int reg, dat;
{
	while (bus_space_read_1 (opm0->sc_bst, opm0->sc_bht, OPM_DATA) & 0x80);
	bus_space_write_1 (opm0->sc_bst, opm0->sc_bht, OPM_REG, reg);
	while (bus_space_read_1 (opm0->sc_bst, opm0->sc_bht, OPM_DATA) & 0x80);
	bus_space_write_1 (opm0->sc_bst, opm0->sc_bht, OPM_DATA, dat);
	opm0->sc_regs[reg] = dat;
}

__inline static int
readopm(reg)
	int reg;
{
	return opm0->sc_regs[reg];
}

#include "fd.h"
#include "bell.h"

#if 0
void
adpcm_chgclk(clk)
	u_char	clk;
{
	writeopm(0x1b, readopm(0x1b) & ~OPM1B_CT1MSK | clk);
}
#endif

#if NFD > 0
void
fdc_force_ready(rdy)
	u_char	rdy;
{
	writeopm(0x1b, (readopm(0x1b) & ~OPM1B_CT2MSK) | rdy);
}
#endif

#if NBELL > 0
void
opm_key_on(channel)
	u_char channel;
{
    writeopm(0x08, opm0->sc_vdata[channel].sm << 3 | channel);
}

void
opm_key_off(channel)
	u_char	channel;
{
    writeopm(0x08, channel);
}

void
opm_set_voice(channel, voice)
	int channel;
	struct opm_voice *voice;
{
	bcopy(voice, &opm0->sc_vdata[channel], sizeof(struct opm_voice));

	opm_set_voice_sub(0x40 + channel, &voice->m1);
	opm_set_voice_sub(0x48 + channel, &voice->m2);
	opm_set_voice_sub(0x50 + channel, &voice->c1);
	opm_set_voice_sub(0x58 + channel, &voice->c2);
	writeopm(0x20 + channel, 0xc0 | (voice->fb & 0x7) << 3 | (voice->con & 0x7));
}

void
opm_set_voice_sub(reg, op)
	register int reg;
	struct opm_operator *op;
{
    /* DT1/MUL */
    writeopm(reg, (op->dt1 & 0x7) << 3 | (op->mul & 0x7));

    /* TL */
    writeopm(reg + 0x20, op->tl & 0x7f);

    /* KS/AR */
    writeopm(reg + 0x40, (op->ks & 0x3) << 6 | (op->ar & 0x1f));

    /* AMS/D1R */
    writeopm(reg + 0x60, (op->ame & 0x1) << 7 | (op->d1r & 0x1f));

    /* DT2/D2R */
    writeopm(reg + 0x80, (op->dt2 & 0x3) << 6 | (op->d2r & 0x1f));

    /* D1L/RR */
    writeopm(reg + 0xa0, (op->d1l & 0xf) << 4 | (op->rr & 0xf));
}

void
opm_set_volume(channel, volume)
	int channel;
	int volume;
{
    int value;

    switch (opm0->sc_vdata[channel].con) {
    case 7:
	value = opm0->sc_vdata[channel].m1.tl + volume;
	writeopm(0x60 + channel, ((value > 0x7f) ? 0x7f : value));
    case 6:
    case 5:
	value = opm0->sc_vdata[channel].m2.tl + volume;
	writeopm(0x68 + channel, ((value > 0x7f) ? 0x7f : value));
    case 4:
	value = opm0->sc_vdata[channel].c1.tl + volume;
	writeopm(0x70 + channel, ((value > 0x7f) ? 0x7f : value));
    case 3:
    case 2:
    case 1:
    case 0:
	value = opm0->sc_vdata[channel].c2.tl + volume;
	writeopm(0x78 + channel, ((value > 0x7f) ? 0x7f : value));
    }
}

void
opm_set_key(channel, tone)
	int channel;
	int tone;
{
	writeopm(0x28 + channel, tone >> 8);
	writeopm(0x30 + channel, tone & 0xff);
}

/*ARGSUSED*/
int
opmopen(dev, flag, mode)
	dev_t dev;
	int flag, mode;
{
	return 0;
}

/*ARGSUSED*/
int
opmclose(dev)
	dev_t dev;
{
	return 0;
}

#endif