/*-
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_acpi.h"
#include "opt_evdev.h"
#include <sys/param.h>
#include <sys/eventhandler.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/proc.h>
#include <contrib/dev/acpica/include/acpi.h>
#include <contrib/dev/acpica/include/accommon.h>
#include <dev/acpica/acpivar.h>
#ifdef EVDEV_SUPPORT
#include <dev/evdev/input.h>
#include <dev/evdev/evdev.h>
#endif
/* 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 */
#ifdef EVDEV_SUPPORT
struct evdev_dev *lid_evdev;
#endif
};
ACPI_HANDLE acpi_lid_handle;
ACPI_SERIAL_DECL(lid, "ACPI lid");
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),
DEVMETHOD_END
};
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);
MODULE_DEPEND(acpi_lid, acpi, 1, 1, 1);
static void
acpi_lid_status_update(struct acpi_lid_softc *sc)
{
ACPI_STATUS status;
int lid_status;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
/*
* Evaluate _LID and check the return value, update lid status.
* Zero: The lid is closed
* Non-zero: The lid is open
*/
status = acpi_GetInteger(sc->lid_handle, "_LID", &lid_status);
if (ACPI_FAILURE(status))
lid_status = 1; /* assume lid is opened */
/* range check value */
sc->lid_status = lid_status ? 1 : 0;
/* Send notification via devd */
acpi_UserNotify("Lid", sc->lid_handle, sc->lid_status);
#ifdef EVDEV_SUPPORT
/* Notify evdev about lid status */
evdev_push_sw(sc->lid_evdev, SW_LID, lid_status ? 0 : 1);
evdev_sync(sc->lid_evdev);
#endif
}
static int
acpi_lid_probe(device_t dev)
{
static char *lid_ids[] = { "PNP0C0D", NULL };
int rv;
if (acpi_disabled("lid"))
return (ENXIO);
rv = ACPI_ID_PROBE(device_get_parent(dev), dev, lid_ids, NULL);
if (rv <= 0)
device_set_desc(dev, "Control Method Lid Switch");
return (rv);
}
static int
acpi_lid_attach(device_t dev)
{
struct acpi_prw_data prw;
struct acpi_lid_softc *sc;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
sc = device_get_softc(dev);
sc->lid_dev = dev;
acpi_lid_handle = sc->lid_handle = acpi_get_handle(dev);
#ifdef EVDEV_SUPPORT
/* Register evdev device before initial status update */
sc->lid_evdev = evdev_alloc();
evdev_set_name(sc->lid_evdev, device_get_desc(dev));
evdev_set_phys(sc->lid_evdev, device_get_nameunit(dev));
evdev_set_id(sc->lid_evdev, BUS_HOST, 0, 0, 1);
evdev_support_event(sc->lid_evdev, EV_SYN);
evdev_support_event(sc->lid_evdev, EV_SW);
evdev_support_sw(sc->lid_evdev, SW_LID);
if (evdev_register(sc->lid_evdev))
return (ENXIO);
#endif
/*
* If a system does not get lid events, it may make sense to change
* the type to ACPI_ALL_NOTIFY. Some systems generate both a wake and
* runtime notify in that case though.
*/
AcpiInstallNotifyHandler(sc->lid_handle, ACPI_DEVICE_NOTIFY,
acpi_lid_notify_handler, sc);
/* Enable the GPE for wake/runtime. */
acpi_wake_set_enable(dev, 1);
if (acpi_parse_prw(sc->lid_handle, &prw) == 0)
AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit);
/* Get the initial lid status */
acpi_lid_status_update(sc);
/*
* Export the lid status
*/
SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
"state", CTLFLAG_RD, &sc->lid_status, 0,
"Device state (0 = closed, 1 = open)");
return (0);
}
static int
acpi_lid_suspend(device_t dev)
{
return (0);
}
static int
acpi_lid_resume(device_t dev)
{
struct acpi_lid_softc *sc;
sc = device_get_softc(dev);
/* Update lid status, if any */
acpi_lid_status_update(sc);
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;
ACPI_SERIAL_BEGIN(lid);
/* Update lid status, if any */
acpi_lid_status_update(sc);
acpi_sc = acpi_device_get_parent_softc(sc->lid_dev);
if (acpi_sc == NULL)
goto out;
ACPI_VPRINT(sc->lid_dev, acpi_sc, "Lid %s\n",
sc->lid_status ? "opened" : "closed");
acpi_UserNotify("Lid", sc->lid_handle, sc->lid_status);
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);
out:
ACPI_SERIAL_END(lid);
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;
ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
sc = (struct acpi_lid_softc *)context;
switch (notify) {
case ACPI_NOTIFY_STATUS_CHANGED:
AcpiOsExecute(OSL_NOTIFY_HANDLER,
acpi_lid_notify_status_changed, sc);
break;
default:
device_printf(sc->lid_dev, "unknown notify %#x\n", notify);
break;
}
return_VOID;
}
