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/* $OpenBSD: acpiac.c,v 1.13 2006/12/23 17:46:39 deraadt Exp $ */
/*
* Copyright (c) 2005 Marco Peereboom <marco@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/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <machine/bus.h>
#include <dev/acpi/acpireg.h>
#include <dev/acpi/acpivar.h>
#include <dev/acpi/acpidev.h>
#include <dev/acpi/amltypes.h>
#include <dev/acpi/dsdt.h>
#include <sys/sensors.h>
int acpiac_match(struct device *, void *, void *);
void acpiac_attach(struct device *, struct device *, void *);
int acpiac_notify(struct aml_node *, int, void *);
void acpiac_refresh(void *);
int acpiac_getsta(struct acpiac_softc *);
struct cfattach acpiac_ca = {
sizeof(struct acpiac_softc), acpiac_match, acpiac_attach
};
struct cfdriver acpiac_cd = {
NULL, "acpiac", DV_DULL
};
int
acpiac_match(struct device *parent, void *match, void *aux)
{
struct acpi_attach_args *aa = aux;
struct cfdata *cf = match;
/* sanity */
if (aa->aaa_name == NULL ||
strcmp(aa->aaa_name, cf->cf_driver->cd_name) != 0 ||
aa->aaa_table != NULL)
return (0);
return (1);
}
void
acpiac_attach(struct device *parent, struct device *self, void *aux)
{
struct acpiac_softc *sc = (struct acpiac_softc *)self;
struct acpi_attach_args *aa = aux;
sc->sc_acpi = (struct acpi_softc *)parent;
sc->sc_devnode = aa->aaa_node->child;
aml_register_notify(sc->sc_devnode->parent, aa->aaa_dev,
acpiac_notify, sc);
acpiac_getsta(sc);
printf(": AC unit ");
if (sc->sc_ac_stat == PSR_ONLINE)
printf("online\n");
else if (sc->sc_ac_stat == PSR_OFFLINE)
printf("offline");
else
printf(" in unknown state");
strlcpy(sc->sc_sensdev.xname, DEVNAME(sc),
sizeof(sc->sc_sensdev.xname));
strlcpy(sc->sens[0].desc, "power supply", sizeof(sc->sens[0].desc));
sc->sens[0].type = SENSOR_INDICATOR;
sensor_attach(&sc->sc_sensdev, &sc->sens[0]);
sensordev_install(&sc->sc_sensdev);
sc->sens[0].value = sc->sc_ac_stat;
}
void
acpiac_refresh(void *arg)
{
struct acpiac_softc *sc = arg;
acpiac_getsta(sc);
sc->sens[0].value = sc->sc_ac_stat;
}
int
acpiac_getsta(struct acpiac_softc *sc)
{
struct aml_value res;
if (aml_evalname(sc->sc_acpi, sc->sc_devnode, "_STA", 0, NULL, NULL)) {
dnprintf(10, "%s: no _STA\n",
DEVNAME(sc));
}
if (aml_evalname(sc->sc_acpi, sc->sc_devnode, "_PSR", 0, NULL, &res)) {
dnprintf(10, "%s: no _PSR\n",
DEVNAME(sc));
return (1);
}
sc->sc_ac_stat = aml_val2int(&res);
aml_freevalue(&res);
return (0);
}
int
acpiac_notify(struct aml_node *node, int notify_type, void *arg)
{
struct acpiac_softc *sc = arg;
dnprintf(10, "acpiac_notify: %.2x %s\n", notify_type,
sc->sc_devnode->parent->name);
switch (notify_type) {
case 0x80:
acpiac_refresh(sc);
dnprintf(10, "A/C status: %d\n", sc->sc_ac_stat);
break;
}
return (0);
}
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