/*	$OpenBSD: beeper.c,v 1.1 2001/09/29 07:16:12 jason Exp $	*/

/*
 * Copyright (c) 2001 Jason L. Wright (jason@thought.net)
 * 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 Jason L. Wright
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 */

/*
 * Driver for beeper device on SUNW,Ultra-1-Engine.
 */

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

#include <machine/bus.h>
#include <machine/autoconf.h>
#include <machine/openfirm.h>

#include <sparc64/dev/ebusreg.h>
#include <sparc64/dev/ebusvar.h>

struct beeper_softc {
	struct device		sc_dev;
	bus_space_tag_t		sc_iot;
	bus_space_handle_t	sc_ioh;
};

#define	BEEP_REG	0

int	beeper_match __P((struct device *, void *, void *));
void	beeper_attach __P((struct device *, struct device *, void *));

struct cfattach beeper_ca = {
	sizeof(struct beeper_softc), beeper_match, beeper_attach
};

struct cfdriver beeper_cd = {
	NULL, "beeper", DV_DULL
};

int
beeper_match(parent, match, aux)
	struct device *parent;
	void *match;
	void *aux;
{
	struct ebus_attach_args *ea = aux;

	if (strcmp(ea->ea_name, "beeper") == 0)
		return (1);
	return (0);
}

void
beeper_attach(parent, self, aux)
	struct device *parent, *self;
	void *aux;
{
	struct beeper_softc *sc = (void *)self;
	struct ebus_attach_args *ea = aux;

	sc->sc_iot = ea->ea_bustag;

	/* Use prom address if available, otherwise map it. */
	if (ea->ea_nvaddrs)
		sc->sc_ioh = (bus_space_handle_t)ea->ea_vaddrs[0];
	else if (ebus_bus_map(sc->sc_iot, 0,
			      EBUS_PADDR_FROM_REG(&ea->ea_regs[0]),
			      ea->ea_regs[0].size,
			      BUS_SPACE_MAP_LINEAR,
			      0, &sc->sc_ioh) != 0) {
		printf(": can't map register space\n");
                return;
	}

	bus_space_write_4(sc->sc_iot, sc->sc_ioh, BEEP_REG, 1);
	DELAY(0xc8 * 1000);
	bus_space_write_4(sc->sc_iot, sc->sc_ioh, BEEP_REG, 0);
	printf("\n");
}