/*      $OpenBSD: beeper.c,v 1.15 2022/10/16 01:22:39 jsg 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.
 *
 * 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.
 *
 * Effort sponsored in part by the Defense Advanced Research Projects
 * Agency (DARPA) and Air Force Research Laboratory, Air Force
 * Materiel Command, USAF, under agreement number F30602-01-2-0537.
 *
 */

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

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

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

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

#include "pckbd.h"
#if NPCKBD > 0
#include <dev/ic/pckbcvar.h>
#include <dev/pckbc/pckbdvar.h>
#endif

struct beeper_softc {
        struct device           sc_dev;
        bus_space_tag_t         sc_iot;
        bus_space_handle_t      sc_ioh;
        struct timeout          sc_to;
        int                     sc_belltimeout, sc_bellactive;
};

#define BEEP_REG        0

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

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

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

#if NPCKBD > 0
void beeper_stop(void *);
void beeper_bell(void *, u_int, u_int, u_int, int);
#endif

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

        sc->sc_iot = ea->ea_memtag;

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

#if NPCKBD > 0
        timeout_set(&sc->sc_to, beeper_stop, sc);
        pckbd_hookup_bell(beeper_bell, sc);
#endif
        printf("\n");
}

#if NPCKBD > 0
void
beeper_stop(void *vsc)
{
        struct beeper_softc *sc = vsc;
        int s;

        s = spltty();
        bus_space_write_4(sc->sc_iot, sc->sc_ioh, BEEP_REG, 0);
        sc->sc_bellactive = 0;
        sc->sc_belltimeout = 0;
        splx(s);
}

void
beeper_bell(void *vsc, u_int pitch, u_int period, u_int volume, int poll)
{
        struct beeper_softc *sc = vsc;
        int s;

        s = spltty();
        if (sc->sc_bellactive) {
                if (sc->sc_belltimeout == 0)
                        timeout_del(&sc->sc_to);
        }
        if (pitch == 0 || period == 0) {
                beeper_stop(sc);
                splx(s);
                return;
        }
        if (!sc->sc_bellactive) {
                sc->sc_bellactive = 1;
                sc->sc_belltimeout = 1;
                bus_space_write_4(sc->sc_iot, sc->sc_ioh, BEEP_REG, 1);
                timeout_add_msec(&sc->sc_to, period);
        }
        splx(s);
}
#endif /* NPCKBD > 0 */