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
28 * $FreeBSD: src/sys/dev/acpica/acpi_lid.c,v 1.30 2009/06/05 18:44:36 jkim Exp $
31 #include <sys/cdefs.h>
34 #include <sys/param.h>
35 #include <sys/kernel.h>
36 #include <sys/module.h>
43 #include <dev/acpica5/acpivar.h>
45 /* 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 ACPI_SERIAL_DECL(lid, "ACPI lid");
57 static int acpi_lid_probe(device_t dev);
58 static int acpi_lid_attach(device_t dev);
59 static int acpi_lid_suspend(device_t dev);
60 static int acpi_lid_resume(device_t dev);
61 static void acpi_lid_notify_status_changed(void *arg);
62 static void acpi_lid_notify_handler(ACPI_HANDLE h, UINT32 notify,
65 static device_method_t acpi_lid_methods[] = {
66 /* Device interface */
67 DEVMETHOD(device_probe, acpi_lid_probe),
68 DEVMETHOD(device_attach, acpi_lid_attach),
69 DEVMETHOD(device_suspend, acpi_lid_suspend),
70 DEVMETHOD(device_resume, acpi_lid_resume),
75 static driver_t acpi_lid_driver = {
78 sizeof(struct acpi_lid_softc),
81 static devclass_t acpi_lid_devclass;
82 DRIVER_MODULE(acpi_lid, acpi, acpi_lid_driver, acpi_lid_devclass, 0, 0);
83 MODULE_DEPEND(acpi_lid, acpi, 1, 1, 1);
86 acpi_lid_probe(device_t dev)
88 static char *lid_ids[] = { "PNP0C0D", NULL };
90 ACPI_SERIAL_INIT(lid);
92 if (acpi_disabled("lid") ||
93 ACPI_ID_PROBE(device_get_parent(dev), dev, lid_ids) == NULL)
96 device_set_desc(dev, "Control Method Lid Switch");
101 acpi_lid_attach(device_t dev)
103 struct acpi_lid_softc *sc;
105 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
107 sc = device_get_softc(dev);
109 sc->lid_handle = acpi_get_handle(dev);
111 ACPI_SERIAL_INIT(lid);
114 * If a system does not get lid events, it may make sense to change
115 * the type to ACPI_ALL_NOTIFY. Some systems generate both a wake and
116 * runtime notify in that case though.
118 AcpiInstallNotifyHandler(sc->lid_handle, ACPI_DEVICE_NOTIFY,
119 acpi_lid_notify_handler, sc);
121 /* Enable the GPE for wake/runtime. */
122 acpi_wake_init(dev, ACPI_GPE_TYPE_WAKE_RUN);
123 acpi_wake_set_enable(dev, 1);
129 acpi_lid_suspend(device_t dev)
135 acpi_lid_resume(device_t dev)
141 acpi_lid_notify_status_changed(void *arg)
143 struct acpi_lid_softc *sc;
144 struct acpi_softc *acpi_sc;
147 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
149 sc = (struct acpi_lid_softc *)arg;
150 ACPI_SERIAL_BEGIN(lid);
153 * Evaluate _LID and check the return value, update lid status.
154 * Zero: The lid is closed
155 * Non-zero: The lid is open
157 status = acpi_GetInteger(sc->lid_handle, "_LID", &sc->lid_status);
158 if (ACPI_FAILURE(status))
161 acpi_sc = acpi_device_get_parent_softc(sc->lid_dev);
165 ACPI_VPRINT(sc->lid_dev, acpi_sc, "Lid %s\n",
166 sc->lid_status ? "opened" : "closed");
168 acpi_UserNotify("Lid", sc->lid_handle, sc->lid_status);
170 if (sc->lid_status == 0)
171 EVENTHANDLER_INVOKE(acpi_sleep_event, acpi_sc->acpi_lid_switch_sx);
173 EVENTHANDLER_INVOKE(acpi_wakeup_event, acpi_sc->acpi_lid_switch_sx);
176 ACPI_SERIAL_END(lid);
180 /* XXX maybe not here */
181 #define ACPI_NOTIFY_STATUS_CHANGED 0x80
184 acpi_lid_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
186 struct acpi_lid_softc *sc;
188 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
190 sc = (struct acpi_lid_softc *)context;
192 case ACPI_NOTIFY_STATUS_CHANGED:
193 AcpiOsExecute(OSL_NOTIFY_HANDLER,
194 acpi_lid_notify_status_changed, sc);
197 device_printf(sc->lid_dev, "unknown notify %#x\n", notify);