252 lines
7.3 KiB
C
252 lines
7.3 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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/* Hooks for the ACPI CA debugging infrastructure */
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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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boolean_t button_type;
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#define ACPI_POWER_BUTTON 0
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#define ACPI_SLEEP_BUTTON 1
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boolean_t fixed;
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};
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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 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,
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void *context);
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static ACPI_STATUS
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acpi_button_fixed_handler(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_shutdown, 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,
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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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int ret = ENXIO;
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sc = device_get_softc(dev);
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if (acpi_get_type(dev) == ACPI_TYPE_DEVICE && !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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ret = 0;
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} else if (acpi_MatchHid(dev, "ACPI_FPB")) {
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device_set_desc(dev, "Power Button (fixed)");
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sc->button_type = ACPI_POWER_BUTTON;
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sc->fixed = 1;
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ret = 0;
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} else 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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ret = 0;
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} else if (acpi_MatchHid(dev, "ACPI_FSB")) {
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device_set_desc(dev, "Sleep Button (fixed)");
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sc->button_type = ACPI_SLEEP_BUTTON;
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sc->fixed = 1;
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ret = 0;
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}
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}
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return (ret);
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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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int event;
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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 (sc->fixed) {
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event = (sc->button_type == ACPI_SLEEP_BUTTON) ?
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ACPI_EVENT_SLEEP_BUTTON : ACPI_EVENT_POWER_BUTTON;
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status = AcpiInstallFixedEventHandler(event,
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acpi_button_fixed_handler, sc);
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} else {
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status = AcpiInstallNotifyHandler(sc->button_handle,
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ACPI_DEVICE_NOTIFY, acpi_button_notify_handler, sc);
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}
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if (ACPI_FAILURE(status)) {
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device_printf(sc->button_dev, "couldn't install notify handler - %s\n",
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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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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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}
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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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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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}
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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,
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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,
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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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}
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static ACPI_STATUS
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acpi_button_fixed_handler(void *context)
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{
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struct acpi_button_softc *sc = (struct acpi_button_softc *)context;
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if (context == NULL)
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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acpi_button_notify_handler(sc->button_handle,
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ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP, sc);
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return_VALUE (AE_OK);
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}
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