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/* $OpenBSD: sysbutton.c,v 1.4 2008/06/13 00:31:09 krw Exp $ */
/*
* Copyright (c) 2007 Gordon Willem Klok <gwk@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/device.h>
#include <ddb/db_var.h>
#include <dev/ofw/openfirm.h>
#include <machine/bus.h>
#include <machine/autoconf.h>
struct sysbutton_softc {
struct device sc_dev;
int sc_node;
int sc_intr;
};
int sysbutton_match(struct device *, void *, void *);
void sysbutton_attach(struct device *, struct device *, void *);
int sysbutton_intr(void *);
struct cfattach sysbutton_ca = {
sizeof(struct sysbutton_softc), sysbutton_match,
sysbutton_attach
};
struct cfdriver sysbutton_cd = {
NULL, "sysbutton", DV_DULL
};
int
sysbutton_match(struct device *parent, void *arg, void *aux)
{
struct confargs *ca = aux;
if (strcmp(ca->ca_name, "indicatorSwitch-gpio") == 0)
return 1;
return 0;
}
void
sysbutton_attach(struct device *parent, struct device *self, void *aux)
{
struct sysbutton_softc *sc = (struct sysbutton_softc *)self;
struct confargs *ca = aux;
int intr[2];
sc->sc_node = ca->ca_node;
OF_getprop(sc->sc_node, "interrupts", intr, sizeof(intr));
sc->sc_intr = intr[0];
printf(": irq %d\n", sc->sc_intr);
mac_intr_establish(parent, sc->sc_intr, IST_EDGE,
IPL_NONE, sysbutton_intr, sc, sc->sc_dev.dv_xname);
}
int
sysbutton_intr(void *v)
{
/*
* XXX: Holding this button causes an interrupt storm if
* ddb.console=0.
*/
#ifdef DDB
if (db_console)
Debugger();
#endif
return 1;
}
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