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/* $OpenBSD: beep.c,v 1.2 2006/05/29 00:17:25 jason Exp $ */
/*
* Copyright (c) 2006 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.
*/
/*
* Driver for beeper device on BBC machines (Blade 1k, 2k, etc)
*/
#include <sys/types.h>
#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>
#define BEEP_CTRL 0
#define BEEP_CNT_0 2
#define BEEP_CNT_1 3
#define BEEP_CNT_2 4
#define BEEP_CNT_3 5
#define BEEP_CTRL_ON 0x01
#define BEEP_CTRL_OFF 0x00
struct beep_softc {
struct device sc_dev;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
int sc_clk;
};
int beep_match(struct device *, void *, void *);
void beep_attach(struct device *, struct device *, void *);
struct cfattach beep_ca = {
sizeof(struct beep_softc), beep_match, beep_attach
};
struct cfdriver beep_cd = {
NULL, "beep", DV_DULL
};
int
beep_match(struct device *parent, void *match, void *aux)
{
struct ebus_attach_args *ea = aux;
if (strcmp(ea->ea_name, "beep") == 0)
return (1);
return (0);
}
void
beep_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct beep_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;
}
/* The bbc,beep is clocked at half the BBC frequency */
sc->sc_clk = getpropint(findroot(), "clock-frequency", 0);
sc->sc_clk /= 2;
printf(": clock %sMHz\n", clockfreq(sc->sc_clk));
}
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