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
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
34 #include <sys/param.h>
35 #include <sys/kernel.h>
36 #include <sys/module.h>
40 #include <contrib/dev/acpica/include/acpi.h>
41 #include <contrib/dev/acpica/include/accommon.h>
43 #include <dev/acpica/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_HANDLE acpi_lid_handle;
57 ACPI_SERIAL_DECL(lid, "ACPI lid");
59 static int acpi_lid_probe(device_t dev);
60 static int acpi_lid_attach(device_t dev);
61 static int acpi_lid_suspend(device_t dev);
62 static int acpi_lid_resume(device_t dev);
63 static void acpi_lid_notify_status_changed(void *arg);
64 static void acpi_lid_notify_handler(ACPI_HANDLE h, UINT32 notify,
67 static device_method_t acpi_lid_methods[] = {
68 /* Device interface */
69 DEVMETHOD(device_probe, acpi_lid_probe),
70 DEVMETHOD(device_attach, acpi_lid_attach),
71 DEVMETHOD(device_suspend, acpi_lid_suspend),
72 DEVMETHOD(device_resume, acpi_lid_resume),
77 static driver_t acpi_lid_driver = {
80 sizeof(struct acpi_lid_softc),
83 static devclass_t acpi_lid_devclass;
84 DRIVER_MODULE(acpi_lid, acpi, acpi_lid_driver, acpi_lid_devclass, 0, 0);
85 MODULE_DEPEND(acpi_lid, acpi, 1, 1, 1);
88 acpi_lid_probe(device_t dev)
90 static char *lid_ids[] = { "PNP0C0D", NULL };
93 if (acpi_disabled("lid"))
95 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, lid_ids, NULL);
97 device_set_desc(dev, "Control Method Lid Switch");
102 acpi_lid_attach(device_t dev)
104 struct acpi_prw_data prw;
105 struct acpi_lid_softc *sc;
107 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
109 sc = device_get_softc(dev);
111 acpi_lid_handle = sc->lid_handle = acpi_get_handle(dev);
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_set_enable(dev, 1);
123 if (acpi_parse_prw(sc->lid_handle, &prw) == 0)
124 AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit);
127 * Export the lid status
129 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
130 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
131 "state", CTLFLAG_RD, &sc->lid_status, 0,
132 "Device set to wake the system");
138 acpi_lid_suspend(device_t dev)
144 acpi_lid_resume(device_t dev)
150 acpi_lid_notify_status_changed(void *arg)
152 struct acpi_lid_softc *sc;
153 struct acpi_softc *acpi_sc;
156 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
158 sc = (struct acpi_lid_softc *)arg;
159 ACPI_SERIAL_BEGIN(lid);
162 * Evaluate _LID and check the return value, update lid status.
163 * Zero: The lid is closed
164 * Non-zero: The lid is open
166 status = acpi_GetInteger(sc->lid_handle, "_LID", &sc->lid_status);
167 if (ACPI_FAILURE(status))
170 acpi_sc = acpi_device_get_parent_softc(sc->lid_dev);
174 ACPI_VPRINT(sc->lid_dev, acpi_sc, "Lid %s\n",
175 sc->lid_status ? "opened" : "closed");
177 acpi_UserNotify("Lid", sc->lid_handle, sc->lid_status);
179 if (sc->lid_status == 0)
180 EVENTHANDLER_INVOKE(acpi_sleep_event, acpi_sc->acpi_lid_switch_sx);
182 EVENTHANDLER_INVOKE(acpi_wakeup_event, acpi_sc->acpi_lid_switch_sx);
185 ACPI_SERIAL_END(lid);
189 /* XXX maybe not here */
190 #define ACPI_NOTIFY_STATUS_CHANGED 0x80
193 acpi_lid_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
195 struct acpi_lid_softc *sc;
197 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
199 sc = (struct acpi_lid_softc *)context;
201 case ACPI_NOTIFY_STATUS_CHANGED:
202 AcpiOsExecute(OSL_NOTIFY_HANDLER,
203 acpi_lid_notify_status_changed, sc);
206 device_printf(sc->lid_dev, "unknown notify %#x\n", notify);