NetBSD/sys/dev/acpi/acpi_acad.c

187 lines
5.2 KiB
C

/* $NetBSD: acpi_acad.c,v 1.2 2001/11/13 13:01:57 lukem Exp $ */
/*
* Copyright 2001 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Jason R. Thorpe for Wasabi Systems, Inc.
*
* 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 for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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.
*/
/*
* ACPI AC Adapter driver.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: acpi_acad.c,v 1.2 2001/11/13 13:01:57 lukem Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <dev/acpi/acpica.h>
#include <dev/acpi/acpireg.h>
#include <dev/acpi/acpivar.h>
struct acpiacad_softc {
struct device sc_dev; /* base device glue */
struct acpi_devnode *sc_node; /* our ACPI devnode */
int sc_flags; /* see below */
int sc_status; /* power status */
};
#define AACAD_F_VERBOSE 0x01 /* verbose events */
int acpiacad_match(struct device *, struct cfdata *, void *);
void acpiacad_attach(struct device *, struct device *, void *);
struct cfattach acpiacad_ca = {
sizeof(struct acpiacad_softc), acpiacad_match, acpiacad_attach,
};
void acpiacad_get_status(void *);
void acpiacad_notify_handler(ACPI_HANDLE, UINT32, void *context);
/*
* acpiacad_match:
*
* Autoconfiguration `match' routine.
*/
int
acpiacad_match(struct device *parent, struct cfdata *match, void *aux)
{
struct acpi_attach_args *aa = aux;
if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
return (0);
if (strcmp(aa->aa_node->ad_devinfo.HardwareId, "ACPI0003") == 0)
return (1);
return (0);
}
/*
* acpiacad_attach:
*
* Autoconfiguration `attach' routine.
*/
void
acpiacad_attach(struct device *parent, struct device *self, void *aux)
{
struct acpiacad_softc *sc = (void *) self;
struct acpi_attach_args *aa = aux;
ACPI_STATUS rv;
printf(": ACPI AC Adapter\n");
sc->sc_node = aa->aa_node;
rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle,
ACPI_DEVICE_NOTIFY, acpiacad_notify_handler, sc);
if (rv != AE_OK) {
printf("%s: unable to register DEVICE NOTIFY handler: %d\n",
sc->sc_dev.dv_xname, rv);
return;
}
/* XXX See acpiacad_notify_handler() */
rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle,
ACPI_SYSTEM_NOTIFY, acpiacad_notify_handler, sc);
if (rv != AE_OK) {
printf("%s: unable to register SYSTEM NOTIFY handler: %d\n",
sc->sc_dev.dv_xname, rv);
return;
}
/* Display the current state. */
sc->sc_flags = AACAD_F_VERBOSE;
acpiacad_get_status(sc);
/*
* XXX Hook into sysmon here.
*/
}
/*
* acpiacad_get_status:
*
* Get, and possibly display, the current AC line status.
*/
void
acpiacad_get_status(void *arg)
{
struct acpiacad_softc *sc = arg;
if (acpi_eval_integer(sc->sc_node->ad_handle, "_PSR",
&sc->sc_status) != AE_OK)
return;
if (sc->sc_flags & AACAD_F_VERBOSE)
printf("%s: AC adapter %sconnected\n",
sc->sc_dev.dv_xname, sc->sc_status == 0 ? "not " : "");
}
/*
* acpiacad_notify_handler:
*
* Callback from ACPI interrupt handler to notify us of an event.
*/
void
acpiacad_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context)
{
struct acpiacad_softc *sc = context;
int rv;
switch (notify) {
/*
* XXX So, BusCheck is not exactly what I would expect,
* but at least my IBM T21 sends it on AC adapter status
* change. --thorpej@wasabisystems.com
*/
case ACPI_NOTIFY_BusCheck:
case ACPI_NOTIFY_PowerSourceStatusChanged:
#ifdef ACPI_ACAD_DEBUG
printf("%s: received notify message: 0x%x\n",
sc->sc_dev.dv_xname, notify);
#endif
rv = AcpiOsQueueForExecution(OSD_PRIORITY_LO,
acpiacad_get_status, sc);
if (rv != AE_OK)
printf("%s: unable to queue status check: %d\n",
sc->sc_dev.dv_xname, rv);
break;
default:
printf("%s: received unknown notify message: 0x%x\n",
sc->sc_dev.dv_xname, notify);
}
}