160 lines
4.3 KiB
C
160 lines
4.3 KiB
C
/*-
|
|
* Copyright (c) 2000 Michael Smith
|
|
* 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 "acpi.h"
|
|
|
|
#include <dev/acpica/acpivar.h>
|
|
|
|
/*
|
|
* Hooks for the ACPI CA debugging infrastructure
|
|
*/
|
|
#define _COMPONENT ACPI_THERMAL_ZONE
|
|
MODULE_NAME("THERMAL")
|
|
|
|
#define TZ_ZEROC 2732
|
|
#define TZ_KELVTOC(x) (((x) - TZ_ZEROC) / 10), (((x) - TZ_ZEROC) % 10)
|
|
|
|
struct acpi_tz_softc {
|
|
device_t tz_dev;
|
|
ACPI_HANDLE tz_handle;
|
|
int tz_tmp;
|
|
};
|
|
|
|
static int acpi_tz_probe(device_t dev);
|
|
static int acpi_tz_attach(device_t dev);
|
|
static void acpi_tz_check_tripping_point(void *context);
|
|
static void acpi_tz_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context);
|
|
|
|
static device_method_t acpi_tz_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, acpi_tz_probe),
|
|
DEVMETHOD(device_attach, acpi_tz_attach),
|
|
|
|
{0, 0}
|
|
};
|
|
|
|
static driver_t acpi_tz_driver = {
|
|
"acpi_tz",
|
|
acpi_tz_methods,
|
|
sizeof(struct acpi_tz_softc),
|
|
};
|
|
|
|
devclass_t acpi_tz_devclass;
|
|
DRIVER_MODULE(acpi_tz, acpi, acpi_tz_driver, acpi_tz_devclass, 0, 0);
|
|
|
|
static int
|
|
acpi_tz_probe(device_t dev)
|
|
{
|
|
|
|
FUNCTION_TRACE(__func__);
|
|
|
|
if ((acpi_get_type(dev) == ACPI_TYPE_THERMAL) &&
|
|
!acpi_disabled("thermal")) {
|
|
device_set_desc(dev, "thermal zone");
|
|
return_VALUE(0);
|
|
}
|
|
return_VALUE(ENXIO);
|
|
}
|
|
|
|
static int
|
|
acpi_tz_attach(device_t dev)
|
|
{
|
|
struct acpi_tz_softc *sc;
|
|
struct acpi_softc *acpi_sc;
|
|
|
|
FUNCTION_TRACE(__func__);
|
|
|
|
sc = device_get_softc(dev);
|
|
sc->tz_dev = dev;
|
|
sc->tz_handle = acpi_get_handle(dev);
|
|
|
|
AcpiInstallNotifyHandler(sc->tz_handle, ACPI_DEVICE_NOTIFY,
|
|
acpi_tz_notify_handler, dev);
|
|
|
|
if (device_get_unit(dev) == 0) {
|
|
acpi_sc = acpi_device_get_parent_softc(dev);
|
|
SYSCTL_ADD_UINT(&acpi_sc->acpi_sysctl_ctx,
|
|
SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree),
|
|
OID_AUTO, "temperature", CTLFLAG_RD,
|
|
&sc->tz_tmp, 0, "");
|
|
}
|
|
|
|
/*
|
|
* Don't bother evaluating/printing the temperature at this point;
|
|
* on many systems it'll be bogus until the EC is running.
|
|
*/
|
|
return_VALUE(0);
|
|
}
|
|
|
|
static void
|
|
acpi_tz_check_tripping_point(void *context)
|
|
{
|
|
struct acpi_tz_softc *sc;
|
|
device_t dev = context;
|
|
ACPI_STATUS status;
|
|
int tp;
|
|
|
|
FUNCTION_TRACE(__func__);
|
|
|
|
sc = device_get_softc(dev);
|
|
if ((status = acpi_EvaluateInteger(sc->tz_handle, "_TMP", &tp)) != AE_OK) {
|
|
device_printf(dev, "can't evaluate _TMP method - %s\n", acpi_strerror(status));
|
|
return_VOID;
|
|
}
|
|
|
|
sc->tz_tmp = (tp - TZ_ZEROC) / 10;
|
|
if (bootverbose) {
|
|
device_printf(dev, "%dC\n", sc->tz_tmp);
|
|
}
|
|
return_VOID;
|
|
}
|
|
|
|
#define ACPI_TZ_STATUS_CHANGE 0x80
|
|
#define ACPI_TZ_TRIPPOINT_CHANGE 0x81
|
|
static void
|
|
acpi_tz_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
|
|
{
|
|
FUNCTION_TRACE(__func__);
|
|
|
|
switch(notify){
|
|
case ACPI_TZ_STATUS_CHANGE:
|
|
case ACPI_TZ_TRIPPOINT_CHANGE:
|
|
/*Check trip point*/
|
|
AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_tz_check_tripping_point, context);
|
|
break;
|
|
}
|
|
return_VOID;
|
|
}
|
|
|