NetBSD/sys/dev/acpi/acpi_lid.c

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2001-11-13 16:01:57 +03:00
/* $NetBSD: acpi_lid.c,v 1.3 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 Lid Switch driver.
*/
2001-11-13 16:01:57 +03:00
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: acpi_lid.c,v 1.3 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 acpilid_softc {
struct device sc_dev; /* base device glue */
struct acpi_devnode *sc_node; /* our ACPI devnode */
int sc_flags; /* see below */
};
#define ACPILID_F_VERBOSE 0x01 /* verbose events */
int acpilid_match(struct device *, struct cfdata *, void *);
void acpilid_attach(struct device *, struct device *, void *);
struct cfattach acpilid_ca = {
sizeof(struct acpilid_softc), acpilid_match, acpilid_attach,
};
void acpilid_status_changed(void *);
void acpilid_notify_handler(ACPI_HANDLE, UINT32, void *context);
/*
* acpilid_match:
*
* Autoconfiguration `match' routine.
*/
int
acpilid_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, "PNP0C0D") == 0)
return (1);
return (0);
}
/*
* acpilid_attach:
*
* Autoconfiguration `attach' routine.
*/
void
acpilid_attach(struct device *parent, struct device *self, void *aux)
{
struct acpilid_softc *sc = (void *) self;
struct acpi_attach_args *aa = aux;
ACPI_STATUS rv;
printf(": ACPI Lid Switch\n");
sc->sc_node = aa->aa_node;
rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle,
ACPI_DEVICE_NOTIFY, acpilid_notify_handler, sc);
if (rv != AE_OK) {
printf("%s: unable to register device notify handler: %d\n",
sc->sc_dev.dv_xname, rv);
return;
}
/* Display the current state when it changes. */
sc->sc_flags = ACPILID_F_VERBOSE;
}
/*
* acpilid_status_changed:
*
* Get, and possibly display, the lid status, and take action.
*/
void
acpilid_status_changed(void *arg)
{
struct acpilid_softc *sc = arg;
int status;
if (acpi_eval_integer(sc->sc_node->ad_handle, "_LID",
&status) != AE_OK)
return;
if (sc->sc_flags & ACPILID_F_VERBOSE)
printf("%s: Lid %s\n",
sc->sc_dev.dv_xname,
status == 0 ? "closed " : "open");
/*
* XXX Perform the appropriate action for the new lid status.
*/
}
/*
* acpilid_notify_handler:
*
* Callback from ACPI interrupt handler to notify us of an event.
*/
void
acpilid_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context)
{
struct acpilid_softc *sc = context;
int rv;
switch (notify) {
case ACPI_NOTIFY_LidStatusChanged:
#ifdef ACPI_LID_DEBUG
printf("%s: received LidStatusChanged message\n",
sc->sc_dev.dv_xname);
#endif
rv = AcpiOsQueueForExecution(OSD_PRIORITY_LO,
acpilid_status_changed, sc);
if (rv != AE_OK)
printf("%s: WARNING: unable to queue lid change "
"event: %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);
}
}