a1fccb4765
This is required for some Thinkpad (and maybe VAIO) machines to wake the system up from sleep. Currently partially implemented, more complete implementation will come later.
225 lines
6.4 KiB
C
225 lines
6.4 KiB
C
/*-
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* Copyright (c) 2000 Mitsaru IWASAKI <iwasaki@jp.freebsd.org>
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* Copyright (c) 2000 Michael Smith <msmith@freebsd.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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/*
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* Hooks for the ACPI CA debugging infrastructure
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*/
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#define _COMPONENT ACPI_BUTTON
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ACPI_MODULE_NAME("BUTTON")
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struct acpi_button_softc {
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device_t button_dev;
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ACPI_HANDLE button_handle;
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#define ACPI_POWER_BUTTON 0
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#define ACPI_SLEEP_BUTTON 1
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boolean_t button_type; /* Power or Sleep Button */
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};
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static int acpi_button_probe(device_t dev);
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static int acpi_button_attach(device_t dev);
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static int acpi_button_suspend(device_t dev);
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static int acpi_button_resume(device_t dev);
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static void acpi_button_notify_handler(ACPI_HANDLE h,UINT32 notify, void *context);
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static void acpi_button_notify_pressed_for_sleep(void *arg);
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static void acpi_button_notify_pressed_for_wakeup(void *arg);
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static device_method_t acpi_button_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, acpi_button_probe),
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DEVMETHOD(device_attach, acpi_button_attach),
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DEVMETHOD(device_suspend, acpi_button_suspend),
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DEVMETHOD(device_resume, acpi_button_resume),
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{0, 0}
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};
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static driver_t acpi_button_driver = {
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"acpi_button",
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acpi_button_methods,
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sizeof(struct acpi_button_softc),
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};
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static devclass_t acpi_button_devclass;
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DRIVER_MODULE(acpi_button, acpi, acpi_button_driver, acpi_button_devclass, 0, 0);
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static int
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acpi_button_probe(device_t dev)
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{
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struct acpi_button_softc *sc;
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sc = device_get_softc(dev);
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if (acpi_get_type(dev) == ACPI_TYPE_DEVICE) {
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if (!acpi_disabled("button")) {
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if (acpi_MatchHid(dev, "PNP0C0C")) {
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device_set_desc(dev, "Power Button");
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sc->button_type = ACPI_POWER_BUTTON;
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return(0);
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}
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if (acpi_MatchHid(dev, "PNP0C0E")) {
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device_set_desc(dev, "Sleep Button");
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sc->button_type = ACPI_SLEEP_BUTTON;
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return(0);
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}
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}
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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_button_attach(device_t dev)
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{
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struct acpi_button_softc *sc;
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ACPI_STATUS status;
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ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
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sc = device_get_softc(dev);
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sc->button_dev = dev;
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sc->button_handle = acpi_get_handle(dev);
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if (ACPI_FAILURE(status = AcpiInstallNotifyHandler(sc->button_handle, ACPI_DEVICE_NOTIFY,
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acpi_button_notify_handler, sc))) {
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device_printf(sc->button_dev, "couldn't install Notify handler - %s\n", AcpiFormatException(status));
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return_VALUE(ENXIO);
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}
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acpi_device_enable_wake_capability(sc->button_handle, 1);
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return_VALUE(0);
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}
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static int
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acpi_button_suspend(device_t dev)
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{
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struct acpi_button_softc *sc;
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sc = device_get_softc(dev);
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acpi_device_enable_wake_event(sc->button_handle);
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return (0);
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}
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static int
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acpi_button_resume(device_t dev)
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{
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return (0);
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}
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static void
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acpi_button_notify_pressed_for_sleep(void *arg)
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{
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struct acpi_button_softc *sc;
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struct acpi_softc *acpi_sc;
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ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
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sc = (struct acpi_button_softc *)arg;
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acpi_sc = acpi_device_get_parent_softc(sc->button_dev);
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if (acpi_sc == NULL) {
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return_VOID;
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}
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switch (sc->button_type) {
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case ACPI_POWER_BUTTON:
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ACPI_VPRINT(sc->button_dev, acpi_sc, "power button pressed\n");
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acpi_eventhandler_power_button_for_sleep((void *)acpi_sc);
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break;
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case ACPI_SLEEP_BUTTON:
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ACPI_VPRINT(sc->button_dev, acpi_sc, "sleep button pressed\n");
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acpi_eventhandler_sleep_button_for_sleep((void *)acpi_sc);
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break;
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default:
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break; /* unknown button type */
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}
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return_VOID;
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}
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static void
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acpi_button_notify_pressed_for_wakeup(void *arg)
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{
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struct acpi_button_softc *sc;
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struct acpi_softc *acpi_sc;
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ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
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sc = (struct acpi_button_softc *)arg;
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acpi_sc = acpi_device_get_parent_softc(sc->button_dev);
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if (acpi_sc == NULL) {
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return_VOID;
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}
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switch (sc->button_type) {
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case ACPI_POWER_BUTTON:
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ACPI_VPRINT(sc->button_dev, acpi_sc, "wakeup by power button\n");
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acpi_eventhandler_power_button_for_wakeup((void *)acpi_sc);
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break;
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case ACPI_SLEEP_BUTTON:
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ACPI_VPRINT(sc->button_dev, acpi_sc, "wakeup by sleep button\n");
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acpi_eventhandler_sleep_button_for_wakeup((void *)acpi_sc);
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break;
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default:
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break; /* unknown button type */
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}
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return_VOID;
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}
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/* XXX maybe not here */
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#define ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP 0x80
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#define ACPI_NOTIFY_BUTTON_PRESSED_FOR_WAKEUP 0x02
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static void
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acpi_button_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
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{
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struct acpi_button_softc *sc = (struct acpi_button_softc *)context;
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ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
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switch (notify) {
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case ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP:
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AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_button_notify_pressed_for_sleep, sc);
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break;
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case ACPI_NOTIFY_BUTTON_PRESSED_FOR_WAKEUP:
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AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_button_notify_pressed_for_wakeup, sc);
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break;
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default:
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break; /* unknown notification value */
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}
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return_VOID;
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}
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