15e32d5d03
ACPICA. Most of these are still works in progress. Support exists for: - Fixed feature and control method power, lid and sleep buttons. - Detection of ISA PnP devices using ACPI namespace. - Detection of PCI root busses using ACPI namespace. - CPU throttling and sleep states (incomplete) - Thermal monitoring and cooling control (incomplete) - Interface to platform embedded controllers (mostly complete) - ACPI timer (incomplete) - Simple userland control of sleep states. - Shutdown and poweroff.
153 lines
4.3 KiB
C
153 lines
4.3 KiB
C
/*-
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* Copyright (c) 2000 Takanori Watanabe <takawata@jp.freebsd.org>
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* Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org>
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* Copyright (c) 2000 Michael Smith <msmith@freebd.org>
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* Copyright (c) 2000 BSDi
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include "opt_acpi.h"
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include "acpi.h"
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#include <dev/acpica/acpivar.h>
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struct acpi_lid_softc {
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device_t lid_dev;
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ACPI_HANDLE lid_handle;
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int lid_status; /* open or closed */
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};
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static int acpi_lid_probe(device_t dev);
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static int acpi_lid_attach(device_t dev);
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static void acpi_lid_notify_status_changed(void *arg);
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static void acpi_lid_notify_handler(ACPI_HANDLE h,UINT32 notify, void *context);
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static device_method_t acpi_lid_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, acpi_lid_probe),
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DEVMETHOD(device_attach, acpi_lid_attach),
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{0, 0}
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};
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static driver_t acpi_lid_driver = {
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"acpi_lid",
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acpi_lid_methods,
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sizeof(struct acpi_lid_softc),
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};
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devclass_t acpi_lid_devclass;
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DRIVER_MODULE(acpi_lid, acpi, acpi_lid_driver, acpi_lid_devclass, 0, 0);
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static int
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acpi_lid_probe(device_t dev)
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{
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if ((acpi_get_type(dev) == ACPI_TYPE_DEVICE) &&
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acpi_MatchHid(dev, "PNP0C0D")) {
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device_set_desc(dev, "Control Method Lid Switch");
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return(0);
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}
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return(ENXIO);
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}
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static int
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acpi_lid_attach(device_t dev)
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{
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struct acpi_lid_softc *sc;
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sc = device_get_softc(dev);
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sc->lid_dev = dev;
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sc->lid_handle = acpi_get_handle(dev);
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/*
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* Install notification handler
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*/
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AcpiInstallNotifyHandler(sc->lid_handle, ACPI_DEVICE_NOTIFY, acpi_lid_notify_handler, sc);
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return(0);
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}
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static void
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acpi_lid_notify_status_changed(void *arg)
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{
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struct acpi_lid_softc *sc;
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struct acpi_softc *acpi_sc;
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ACPI_BUFFER Buffer;
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ACPI_OBJECT Object;
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sc = (struct acpi_lid_softc *)arg;
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/*
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* Evaluate _LID and check the return value
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* Zero: The lid is closed
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* Non-zero: The lid is open
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*/
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Buffer.Length = sizeof(Object);
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Buffer.Pointer = &Object;
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if (AcpiEvaluateObject(sc->lid_handle, "_LID", NULL, &Buffer) != AE_OK)
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return;
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if (Object.Type != ACPI_TYPE_NUMBER)
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return;
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/*
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* Update lid status
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*/
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sc->lid_status = Object.Number.Value;
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device_printf(sc->lid_dev, "Lid %s\n", sc->lid_status ? "opened" : "closed");
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acpi_sc = acpi_device_get_parent_softc(sc->lid_dev);
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if (acpi_sc == NULL) {
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return;
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}
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if (sc->lid_status == 0) {
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EVENTHANDLER_INVOKE(acpi_sleep_event, acpi_sc->acpi_lid_switch_sx);
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} else {
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EVENTHANDLER_INVOKE(acpi_wakeup_event, acpi_sc->acpi_lid_switch_sx);
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}
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}
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/* XXX maybe not here */
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#define ACPI_NOTIFY_STATUS_CHANGED 0x80
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static void
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acpi_lid_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
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{
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struct acpi_lid_softc *sc = (struct acpi_lid_softc *)context;
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switch (notify) {
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case ACPI_NOTIFY_STATUS_CHANGED:
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AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_lid_notify_status_changed, sc);
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break;
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default:
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return; /* unknown notification value */
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}
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}
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