2 * Copyright (c) 2000 Takanori Watanabe <takawata@jp.freebsd.org>
3 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org>
4 * Copyright (c) 2000 Michael Smith <msmith@freebd.org>
5 * Copyright (c) 2000 BSDi
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * $FreeBSD: src/sys/dev/acpica/acpi_lid.c,v 1.12.6.1 2003/08/22 20:49:20 jhb Exp $
30 * $DragonFly: src/sys/dev/acpica/Attic/acpi_lid.c,v 1.1 2003/09/24 03:32:16 drhodus Exp $
34 #include <sys/param.h>
35 #include <sys/kernel.h>
41 #include <dev/acpica/acpivar.h>
44 * Hooks for the ACPI CA debugging infrastructure
46 #define _COMPONENT ACPI_BUTTON
47 ACPI_MODULE_NAME("LID")
49 struct acpi_lid_softc {
51 ACPI_HANDLE lid_handle;
52 int lid_status; /* open or closed */
55 static int acpi_lid_probe(device_t dev);
56 static int acpi_lid_attach(device_t dev);
57 static int acpi_lid_suspend(device_t dev);
58 static int acpi_lid_resume(device_t dev);
59 static void acpi_lid_notify_status_changed(void *arg);
60 static void acpi_lid_notify_handler(ACPI_HANDLE h,UINT32 notify, void *context);
62 static device_method_t acpi_lid_methods[] = {
63 /* Device interface */
64 DEVMETHOD(device_probe, acpi_lid_probe),
65 DEVMETHOD(device_attach, acpi_lid_attach),
66 DEVMETHOD(device_suspend, acpi_lid_suspend),
67 DEVMETHOD(device_resume, acpi_lid_resume),
72 static driver_t acpi_lid_driver = {
75 sizeof(struct acpi_lid_softc),
78 static devclass_t acpi_lid_devclass;
79 DRIVER_MODULE(acpi_lid, acpi, acpi_lid_driver, acpi_lid_devclass, 0, 0);
82 acpi_lid_probe(device_t dev)
84 if ((acpi_get_type(dev) == ACPI_TYPE_DEVICE) &&
85 !acpi_disabled("lid") &&
86 acpi_MatchHid(dev, "PNP0C0D")) {
87 device_set_desc(dev, "Control Method Lid Switch");
94 acpi_lid_attach(device_t dev)
96 struct acpi_lid_softc *sc;
98 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
100 sc = device_get_softc(dev);
102 sc->lid_handle = acpi_get_handle(dev);
105 * Install notification handler
107 AcpiInstallNotifyHandler(sc->lid_handle, ACPI_DEVICE_NOTIFY, acpi_lid_notify_handler, sc);
108 acpi_device_enable_wake_capability(sc->lid_handle, 1);
113 acpi_lid_suspend(device_t dev)
115 struct acpi_lid_softc *sc;
117 sc = device_get_softc(dev);
118 acpi_device_enable_wake_event(sc->lid_handle);
123 acpi_lid_resume(device_t dev)
129 acpi_lid_notify_status_changed(void *arg)
131 struct acpi_lid_softc *sc;
132 struct acpi_softc *acpi_sc;
134 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
136 sc = (struct acpi_lid_softc *)arg;
139 * Evaluate _LID and check the return value, update lid status.
140 * Zero: The lid is closed
141 * Non-zero: The lid is open
143 if (ACPI_FAILURE(acpi_EvaluateInteger(sc->lid_handle, "_LID", &sc->lid_status)))
146 acpi_sc = acpi_device_get_parent_softc(sc->lid_dev);
147 if (acpi_sc == NULL) {
151 ACPI_VPRINT(sc->lid_dev, acpi_sc,
152 "Lid %s\n", sc->lid_status ? "opened" : "closed");
154 if (sc->lid_status == 0) {
155 EVENTHANDLER_INVOKE(acpi_sleep_event, acpi_sc->acpi_lid_switch_sx);
157 EVENTHANDLER_INVOKE(acpi_wakeup_event, acpi_sc->acpi_lid_switch_sx);
163 /* XXX maybe not here */
164 #define ACPI_NOTIFY_STATUS_CHANGED 0x80
167 acpi_lid_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
169 struct acpi_lid_softc *sc = (struct acpi_lid_softc *)context;
171 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
174 case ACPI_NOTIFY_STATUS_CHANGED:
175 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_lid_notify_status_changed, sc);
178 break; /* unknown notification value */