169 lines
4.6 KiB
C
169 lines
4.6 KiB
C
/* $NetBSD: acpi_lid.c,v 1.2 2001/09/29 05:36:49 thorpej Exp $ */
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/*
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* Copyright 2001 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Jason R. Thorpe for Wasabi Systems, Inc.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* ACPI Lid Switch driver.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <dev/acpi/acpica.h>
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#include <dev/acpi/acpireg.h>
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#include <dev/acpi/acpivar.h>
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struct acpilid_softc {
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struct device sc_dev; /* base device glue */
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struct acpi_devnode *sc_node; /* our ACPI devnode */
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int sc_flags; /* see below */
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};
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#define ACPILID_F_VERBOSE 0x01 /* verbose events */
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int acpilid_match(struct device *, struct cfdata *, void *);
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void acpilid_attach(struct device *, struct device *, void *);
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struct cfattach acpilid_ca = {
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sizeof(struct acpilid_softc), acpilid_match, acpilid_attach,
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};
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void acpilid_status_changed(void *);
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void acpilid_notify_handler(ACPI_HANDLE, UINT32, void *context);
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/*
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* acpilid_match:
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*
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* Autoconfiguration `match' routine.
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*/
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int
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acpilid_match(struct device *parent, struct cfdata *match, void *aux)
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{
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struct acpi_attach_args *aa = aux;
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if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
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return (0);
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if (strcmp(aa->aa_node->ad_devinfo.HardwareId, "PNP0C0D") == 0)
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return (1);
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return (0);
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}
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/*
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* acpilid_attach:
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*
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* Autoconfiguration `attach' routine.
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*/
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void
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acpilid_attach(struct device *parent, struct device *self, void *aux)
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{
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struct acpilid_softc *sc = (void *) self;
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struct acpi_attach_args *aa = aux;
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ACPI_STATUS rv;
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printf(": ACPI Lid Switch\n");
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sc->sc_node = aa->aa_node;
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rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle,
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ACPI_DEVICE_NOTIFY, acpilid_notify_handler, sc);
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if (rv != AE_OK) {
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printf("%s: unable to register device notify handler: %d\n",
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sc->sc_dev.dv_xname, rv);
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return;
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}
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/* Display the current state when it changes. */
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sc->sc_flags = ACPILID_F_VERBOSE;
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}
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/*
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* acpilid_status_changed:
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*
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* Get, and possibly display, the lid status, and take action.
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*/
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void
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acpilid_status_changed(void *arg)
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{
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struct acpilid_softc *sc = arg;
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int status;
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if (acpi_eval_integer(sc->sc_node->ad_handle, "_LID",
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&status) != AE_OK)
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return;
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if (sc->sc_flags & ACPILID_F_VERBOSE)
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printf("%s: Lid %s\n",
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sc->sc_dev.dv_xname,
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status == 0 ? "closed " : "open");
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/*
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* XXX Perform the appropriate action for the new lid status.
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*/
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}
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/*
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* acpilid_notify_handler:
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*
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* Callback from ACPI interrupt handler to notify us of an event.
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*/
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void
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acpilid_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context)
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{
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struct acpilid_softc *sc = context;
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int rv;
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switch (notify) {
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case ACPI_NOTIFY_LidStatusChanged:
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#ifdef ACPI_LID_DEBUG
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printf("%s: received LidStatusChanged message\n",
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sc->sc_dev.dv_xname);
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#endif
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rv = AcpiOsQueueForExecution(OSD_PRIORITY_LO,
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acpilid_status_changed, sc);
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if (rv != AE_OK)
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printf("%s: WARNING: unable to queue lid change "
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"event: %d\n", sc->sc_dev.dv_xname, rv);
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break;
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default:
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printf("%s: received unknown notify message: 0x%x\n",
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sc->sc_dev.dv_xname, notify);
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}
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}
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