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 1.30 2009/06/05 18:44:36 jkim Exp $
33 #include <sys/param.h>
34 #include <sys/kernel.h>
35 #include <sys/module.h>
42 #include <dev/acpica5/acpivar.h>
44 /* Hooks for the ACPI CA debugging infrastructure */
45 #define _COMPONENT ACPI_BUTTON
46 ACPI_MODULE_NAME("LID")
48 struct acpi_lid_softc {
50 ACPI_HANDLE lid_handle;
51 int lid_status; /* open or closed */
54 ACPI_SERIAL_DECL(lid, "ACPI lid");
56 static int acpi_lid_probe(device_t dev);
57 static int acpi_lid_attach(device_t dev);
58 static int acpi_lid_suspend(device_t dev);
59 static int acpi_lid_resume(device_t dev);
60 static void acpi_lid_notify_status_changed(void *arg);
61 static void acpi_lid_notify_handler(ACPI_HANDLE h, UINT32 notify,
64 static device_method_t acpi_lid_methods[] = {
65 /* Device interface */
66 DEVMETHOD(device_probe, acpi_lid_probe),
67 DEVMETHOD(device_attach, acpi_lid_attach),
68 DEVMETHOD(device_suspend, acpi_lid_suspend),
69 DEVMETHOD(device_resume, acpi_lid_resume),
74 static driver_t acpi_lid_driver = {
77 sizeof(struct acpi_lid_softc),
80 static devclass_t acpi_lid_devclass;
81 DRIVER_MODULE(acpi_lid, acpi, acpi_lid_driver, acpi_lid_devclass, 0, 0);
82 MODULE_DEPEND(acpi_lid, acpi, 1, 1, 1);
85 acpi_lid_probe(device_t dev)
87 static char *lid_ids[] = { "PNP0C0D", NULL };
89 ACPI_SERIAL_INIT(lid);
91 if (acpi_disabled("lid") ||
92 ACPI_ID_PROBE(device_get_parent(dev), dev, lid_ids) == NULL)
95 device_set_desc(dev, "Control Method Lid Switch");
100 acpi_lid_attach(device_t dev)
102 struct acpi_lid_softc *sc;
104 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
106 sc = device_get_softc(dev);
108 sc->lid_handle = acpi_get_handle(dev);
110 ACPI_SERIAL_INIT(lid);
113 * If a system does not get lid events, it may make sense to change
114 * the type to ACPI_ALL_NOTIFY. Some systems generate both a wake and
115 * runtime notify in that case though.
117 AcpiInstallNotifyHandler(sc->lid_handle, ACPI_DEVICE_NOTIFY,
118 acpi_lid_notify_handler, sc);
120 /* Enable the GPE for wake */
121 acpi_wake_set_enable(dev, 1);
127 acpi_lid_suspend(device_t dev)
133 acpi_lid_resume(device_t dev)
139 acpi_lid_notify_status_changed(void *arg)
141 struct acpi_lid_softc *sc;
142 struct acpi_softc *acpi_sc;
145 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
147 sc = (struct acpi_lid_softc *)arg;
148 ACPI_SERIAL_BEGIN(lid);
151 * Evaluate _LID and check the return value, update lid status.
152 * Zero: The lid is closed
153 * Non-zero: The lid is open
155 status = acpi_GetInteger(sc->lid_handle, "_LID", &sc->lid_status);
156 if (ACPI_FAILURE(status))
159 acpi_sc = acpi_device_get_parent_softc(sc->lid_dev);
163 ACPI_VPRINT(sc->lid_dev, acpi_sc, "Lid %s\n",
164 sc->lid_status ? "opened" : "closed");
166 acpi_UserNotify("Lid", sc->lid_handle, sc->lid_status);
168 if (sc->lid_status == 0)
169 EVENTHANDLER_INVOKE(acpi_sleep_event, acpi_sc->acpi_lid_switch_sx);
171 EVENTHANDLER_INVOKE(acpi_wakeup_event, acpi_sc->acpi_lid_switch_sx);
174 ACPI_SERIAL_END(lid);
178 /* XXX maybe not here */
179 #define ACPI_NOTIFY_STATUS_CHANGED 0x80
182 acpi_lid_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
184 struct acpi_lid_softc *sc;
186 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
188 sc = (struct acpi_lid_softc *)context;
190 case ACPI_NOTIFY_STATUS_CHANGED:
191 AcpiOsExecute(OSL_NOTIFY_HANDLER,
192 acpi_lid_notify_status_changed, sc);
195 device_printf(sc->lid_dev, "unknown notify %#x\n", notify);