NetBSD/sys/dev/acpi/acpi_button.c

210 lines
5.6 KiB
C

/* $NetBSD: acpi_button.c,v 1.3 2002/03/10 19:55:01 augustss 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 Button driver.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: acpi_button.c,v 1.3 2002/03/10 19:55:01 augustss 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 acpibut_softc {
struct device sc_dev; /* base device glue */
struct acpi_devnode *sc_node; /* our ACPI devnode */
int sc_buttype; /* button type */
int sc_flags; /* see below */
};
#define ACPIBUT_TYPE_POWER 0
#define ACPIBUT_TYPE_SLEEP 1
#define ACPIBUT_F_VERBOSE 0x01 /* verbose events */
int acpibut_match(struct device *, struct cfdata *, void *);
void acpibut_attach(struct device *, struct device *, void *);
struct cfattach acpibut_ca = {
sizeof(struct acpibut_softc), acpibut_match, acpibut_attach,
};
void acpibut_pressed_for_sleep(void *);
void acpibut_pressed_for_wakeup(void *);
void acpibut_notify_handler(ACPI_HANDLE, UINT32, void *context);
/*
* acpibut_match:
*
* Autoconfiguration `match' routine.
*/
int
acpibut_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, "PNP0C0C") == 0 ||
strcmp(aa->aa_node->ad_devinfo.HardwareId, "PNP0C0E") == 0)
return (1);
return (0);
}
/*
* acpibut_attach:
*
* Autoconfiguration `attach' routine.
*/
void
acpibut_attach(struct device *parent, struct device *self, void *aux)
{
struct acpibut_softc *sc = (void *) self;
struct acpi_attach_args *aa = aux;
const char *desc;
ACPI_STATUS rv;
if (strcmp(aa->aa_node->ad_devinfo.HardwareId, "PNP0C0C") == 0) {
sc->sc_buttype = ACPIBUT_TYPE_POWER;
desc = "Power";
} else if (strcmp(aa->aa_node->ad_devinfo.HardwareId, "PNP0C0E") == 0) {
sc->sc_buttype = ACPIBUT_TYPE_SLEEP;
desc = "Sleep";
} else {
printf("\n");
panic("acpibut_attach: impossible");
}
printf(": ACPI %s Button\n", desc);
sc->sc_node = aa->aa_node;
rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle,
ACPI_DEVICE_NOTIFY, acpibut_notify_handler, sc);
if (rv != AE_OK) {
printf("%s: unable to register device notify handler: %d\n",
sc->sc_dev.dv_xname, rv);
return;
}
#ifdef ACPI_BUT_DEBUG
/* Display the current state when it changes. */
sc->sc_flags = ACPIBUT_F_VERBOSE;
#endif
}
/*
* acpibut_pressed_for_sleep:
*
* Deal with a button being pressed for sleep.
*/
void
acpibut_pressed_for_sleep(void *arg)
{
struct acpibut_softc *sc = arg;
if (sc->sc_flags & ACPIBUT_F_VERBOSE)
printf("%s: button pressed for sleep\n",
sc->sc_dev.dv_xname);
/*
* XXX Perform the appropriate action.
*/
}
/*
* acpibut_pressed_for_wakeup:
*
* Deal with a button being pressed for wakeup.
*/
void
acpibut_pressed_for_wakeup(void *arg)
{
struct acpibut_softc *sc = arg;
if (sc->sc_flags & ACPIBUT_F_VERBOSE)
printf("%s: button pressed for wakeup\n",
sc->sc_dev.dv_xname);
/*
* XXX Perform the appropriate action.
*/
}
/*
* acpibut_notify_handler:
*
* Callback from ACPI interrupt handler to notify us of an event.
*/
void
acpibut_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context)
{
struct acpibut_softc *sc = context;
int rv;
switch (notify) {
case ACPI_NOTIFY_S0PowerButtonPressed:
#if 0
case ACPI_NOTIFY_S0SleepButtonPressed: /* same as above */
#endif
#ifdef ACPI_BUT_DEBUG
printf("%s: received ButtonPressed message\n",
sc->sc_dev.dv_xname);
#endif
rv = AcpiOsQueueForExecution(OSD_PRIORITY_LO,
acpibut_pressed_for_sleep, sc);
if (rv != AE_OK)
printf("%s: WARNING: unable to queue button pressed "
"event: %d\n", sc->sc_dev.dv_xname, rv);
break;
/* XXX ACPI_NOTIFY_DeviceWake?? */
default:
printf("%s: received unknown notify message: 0x%x\n",
sc->sc_dev.dv_xname, notify);
}
}