NetBSD/sys/dev/acpi/acpi_button.c

208 lines
5.7 KiB
C

/* $NetBSD: acpi_button.c,v 1.17 2005/05/02 14:54:00 kochi Exp $ */
/*
* Copyright 2001, 2003 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 1.17 2005/05/02 14:54:00 kochi 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>
#include <dev/sysmon/sysmonvar.h>
struct acpibut_softc {
struct device sc_dev; /* base device glue */
struct acpi_devnode *sc_node; /* our ACPI devnode */
struct sysmon_pswitch sc_smpsw; /* our sysmon glue */
int sc_flags; /* see below */
};
static const char * const power_button_hid[] = {
"PNP0C0C",
NULL
};
static const char * const sleep_button_hid[] = {
"PNP0C0E",
NULL
};
#define ACPIBUT_F_VERBOSE 0x01 /* verbose events */
static int acpibut_match(struct device *, struct cfdata *, void *);
static void acpibut_attach(struct device *, struct device *, void *);
CFATTACH_DECL(acpibut, sizeof(struct acpibut_softc),
acpibut_match, acpibut_attach, NULL, NULL);
static void acpibut_pressed_event(void *);
static void acpibut_notify_handler(ACPI_HANDLE, UINT32, void *context);
/*
* acpibut_match:
*
* Autoconfiguration `match' routine.
*/
static 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 (acpi_match_hid(aa->aa_node->ad_devinfo, power_button_hid))
return 1;
if (acpi_match_hid(aa->aa_node->ad_devinfo, sleep_button_hid))
return 1;
return 0;
}
/*
* acpibut_attach:
*
* Autoconfiguration `attach' routine.
*/
static 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;
sc->sc_smpsw.smpsw_name = sc->sc_dev.dv_xname;
if (acpi_match_hid(aa->aa_node->ad_devinfo, power_button_hid)) {
sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_POWER;
desc = "Power";
} else if (acpi_match_hid(aa->aa_node->ad_devinfo, sleep_button_hid)) {
sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_SLEEP;
desc = "Sleep";
} else {
printf("\n");
panic("acpibut_attach: impossible");
}
printf(": ACPI %s Button\n", desc);
sc->sc_node = aa->aa_node;
if (sysmon_pswitch_register(&sc->sc_smpsw) != 0) {
printf("%s: unable to register with sysmon\n",
sc->sc_dev.dv_xname);
return;
}
rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle,
ACPI_DEVICE_NOTIFY, acpibut_notify_handler, sc);
if (ACPI_FAILURE(rv)) {
printf("%s: unable to register DEVICE NOTIFY handler: %s\n",
sc->sc_dev.dv_xname, AcpiFormatException(rv));
return;
}
acpi_set_wake_gpe(sc->sc_node->ad_handle);
#ifdef ACPI_BUT_DEBUG
/* Display the current state when it changes. */
sc->sc_flags = ACPIBUT_F_VERBOSE;
#endif
}
/*
* acpibut_pressed_event:
*
* Deal with a button being pressed.
*/
static void
acpibut_pressed_event(void *arg)
{
struct acpibut_softc *sc = arg;
if (sc->sc_flags & ACPIBUT_F_VERBOSE)
printf("%s: button pressed\n", sc->sc_dev.dv_xname);
sysmon_pswitch_event(&sc->sc_smpsw, PSWITCH_EVENT_PRESSED);
}
/*
* acpibut_notify_handler:
*
* Callback from ACPI interrupt handler to notify us of an event.
*/
static 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_event, sc);
if (ACPI_FAILURE(rv))
printf("%s: WARNING: unable to queue button pressed "
"callback: %s\n", sc->sc_dev.dv_xname,
AcpiFormatException(rv));
break;
/* XXX ACPI_NOTIFY_DeviceWake?? */
default:
printf("%s: received unknown notify message: 0x%x\n",
sc->sc_dev.dv_xname, notify);
}
}