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/*-
* Copyright (c) 2000 Takanori Watanabe <takawata@jp.freebsd.org>
* Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org>
* Copyright (c) 2000 Michael Smith <msmith@freebd.org>
* Copyright (c) 2000 BSDi
* All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
#include "opt_acpi.h"
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/proc.h>
#include "acpi.h"
#include <dev/acpica/acpivar.h>
/*
* Hooks for the ACPI CA debugging infrastructure
*/
#define _COMPONENT ACPI_BUTTON
ACPI_MODULE_NAME("LID")
struct acpi_lid_softc {
device_t lid_dev;
ACPI_HANDLE lid_handle;
int lid_status; /* open or closed */
};
static int acpi_lid_probe(device_t dev);
static int acpi_lid_attach(device_t dev);
static int acpi_lid_suspend(device_t dev);
static int acpi_lid_resume(device_t dev);
static void acpi_lid_notify_status_changed(void *arg);
static void acpi_lid_notify_handler(ACPI_HANDLE h,UINT32 notify, void *context);
static device_method_t acpi_lid_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, acpi_lid_probe),
DEVMETHOD(device_attach, acpi_lid_attach),
DEVMETHOD(device_suspend, acpi_lid_suspend),
DEVMETHOD(device_resume, acpi_lid_resume),
{0, 0}
};
static driver_t acpi_lid_driver = {
"acpi_lid",
acpi_lid_methods,
sizeof(struct acpi_lid_softc),
};
static devclass_t acpi_lid_devclass;
DRIVER_MODULE(acpi_lid, acpi, acpi_lid_driver, acpi_lid_devclass, 0, 0);
static int
acpi_lid_probe(device_t dev)
{
if ((acpi_get_type(dev) == ACPI_TYPE_DEVICE) &&
!acpi_disabled("lid") &&
acpi_MatchHid(dev, "PNP0C0D")) {
device_set_desc(dev, "Control Method Lid Switch");
return(0);
}
return(ENXIO);
}
static int
acpi_lid_attach(device_t dev)
{
struct acpi_lid_softc *sc;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
sc = device_get_softc(dev);
sc->lid_dev = dev;
sc->lid_handle = acpi_get_handle(dev);
/*
* Install notification handler
*/
AcpiInstallNotifyHandler(sc->lid_handle, ACPI_DEVICE_NOTIFY, acpi_lid_notify_handler, sc);
acpi_device_enable_wake_capability(sc->lid_handle, 1);
return_VALUE(0);
}
static int
acpi_lid_suspend(device_t dev)
{
struct acpi_lid_softc *sc;
sc = device_get_softc(dev);
acpi_device_enable_wake_event(sc->lid_handle);
return (0);
}
static int
acpi_lid_resume(device_t dev)
{
return (0);
}
static void
acpi_lid_notify_status_changed(void *arg)
{
struct acpi_lid_softc *sc;
struct acpi_softc *acpi_sc;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
sc = (struct acpi_lid_softc *)arg;
/*
* Evaluate _LID and check the return value, update lid status.
* Zero: The lid is closed
* Non-zero: The lid is open
*/
if (ACPI_FAILURE(acpi_EvaluateInteger(sc->lid_handle, "_LID", &sc->lid_status)))
return_VOID;
acpi_sc = acpi_device_get_parent_softc(sc->lid_dev);
if (acpi_sc == NULL) {
return_VOID;
}
ACPI_VPRINT(sc->lid_dev, acpi_sc,
"Lid %s\n", sc->lid_status ? "opened" : "closed");
if (sc->lid_status == 0) {
EVENTHANDLER_INVOKE(acpi_sleep_event, acpi_sc->acpi_lid_switch_sx);
} else {
EVENTHANDLER_INVOKE(acpi_wakeup_event, acpi_sc->acpi_lid_switch_sx);
}
return_VOID;
}
/* XXX maybe not here */
#define ACPI_NOTIFY_STATUS_CHANGED 0x80
static void
acpi_lid_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
{
struct acpi_lid_softc *sc = (struct acpi_lid_softc *)context;
ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
switch (notify) {
case ACPI_NOTIFY_STATUS_CHANGED:
AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_lid_notify_status_changed, sc);
break;
default:
break; /* unknown notification value */
}
return_VOID;
}
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