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/eventhandler.h>
36 #include <sys/kernel.h>
37 #include <sys/module.h>
41 #include <contrib/dev/acpica/include/acpi.h>
42 #include <contrib/dev/acpica/include/accommon.h>
44 #include <dev/acpica/acpivar.h>
46 /* Hooks for the ACPI CA debugging infrastructure */
47 #define _COMPONENT ACPI_BUTTON
48 ACPI_MODULE_NAME("LID")
50 struct acpi_lid_softc {
52 ACPI_HANDLE lid_handle;
53 int lid_status; /* open or closed */
56 ACPI_HANDLE acpi_lid_handle;
58 ACPI_SERIAL_DECL(lid, "ACPI lid");
60 static int acpi_lid_probe(device_t dev);
61 static int acpi_lid_attach(device_t dev);
62 static int acpi_lid_suspend(device_t dev);
63 static int acpi_lid_resume(device_t dev);
64 static void acpi_lid_notify_status_changed(void *arg);
65 static void acpi_lid_notify_handler(ACPI_HANDLE h, UINT32 notify,
68 static device_method_t acpi_lid_methods[] = {
69 /* Device interface */
70 DEVMETHOD(device_probe, acpi_lid_probe),
71 DEVMETHOD(device_attach, acpi_lid_attach),
72 DEVMETHOD(device_suspend, acpi_lid_suspend),
73 DEVMETHOD(device_resume, acpi_lid_resume),
78 static driver_t acpi_lid_driver = {
81 sizeof(struct acpi_lid_softc),
84 static devclass_t acpi_lid_devclass;
85 DRIVER_MODULE(acpi_lid, acpi, acpi_lid_driver, acpi_lid_devclass, 0, 0);
86 MODULE_DEPEND(acpi_lid, acpi, 1, 1, 1);
89 acpi_lid_status_update(struct acpi_lid_softc *sc)
94 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
97 * Evaluate _LID and check the return value, update lid status.
98 * Zero: The lid is closed
99 * Non-zero: The lid is open
101 status = acpi_GetInteger(sc->lid_handle, "_LID", &lid_status);
102 if (ACPI_FAILURE(status))
103 lid_status = 1; /* assume lid is opened */
105 /* range check value */
106 sc->lid_status = lid_status ? 1 : 0;
110 acpi_lid_probe(device_t dev)
112 static char *lid_ids[] = { "PNP0C0D", NULL };
115 if (acpi_disabled("lid"))
117 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, lid_ids, NULL);
119 device_set_desc(dev, "Control Method Lid Switch");
124 acpi_lid_attach(device_t dev)
126 struct acpi_prw_data prw;
127 struct acpi_lid_softc *sc;
129 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
131 sc = device_get_softc(dev);
133 acpi_lid_handle = sc->lid_handle = acpi_get_handle(dev);
136 * If a system does not get lid events, it may make sense to change
137 * the type to ACPI_ALL_NOTIFY. Some systems generate both a wake and
138 * runtime notify in that case though.
140 AcpiInstallNotifyHandler(sc->lid_handle, ACPI_DEVICE_NOTIFY,
141 acpi_lid_notify_handler, sc);
143 /* Enable the GPE for wake/runtime. */
144 acpi_wake_set_enable(dev, 1);
145 if (acpi_parse_prw(sc->lid_handle, &prw) == 0)
146 AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit);
148 /* Get the initial lid status */
149 acpi_lid_status_update(sc);
152 * Export the lid status
154 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
155 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
156 "state", CTLFLAG_RD, &sc->lid_status, 0,
157 "Device state (0 = closed, 1 = open)");
163 acpi_lid_suspend(device_t dev)
169 acpi_lid_resume(device_t dev)
171 struct acpi_lid_softc *sc;
173 sc = device_get_softc(dev);
175 /* Update lid status, if any */
176 acpi_lid_status_update(sc);
182 acpi_lid_notify_status_changed(void *arg)
184 struct acpi_lid_softc *sc;
185 struct acpi_softc *acpi_sc;
187 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
189 sc = (struct acpi_lid_softc *)arg;
190 ACPI_SERIAL_BEGIN(lid);
192 /* Update lid status, if any */
193 acpi_lid_status_update(sc);
195 acpi_sc = acpi_device_get_parent_softc(sc->lid_dev);
199 ACPI_VPRINT(sc->lid_dev, acpi_sc, "Lid %s\n",
200 sc->lid_status ? "opened" : "closed");
202 acpi_UserNotify("Lid", sc->lid_handle, sc->lid_status);
204 if (sc->lid_status == 0)
205 EVENTHANDLER_INVOKE(acpi_sleep_event, acpi_sc->acpi_lid_switch_sx);
207 EVENTHANDLER_INVOKE(acpi_wakeup_event, acpi_sc->acpi_lid_switch_sx);
210 ACPI_SERIAL_END(lid);
214 /* XXX maybe not here */
215 #define ACPI_NOTIFY_STATUS_CHANGED 0x80
218 acpi_lid_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
220 struct acpi_lid_softc *sc;
222 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
224 sc = (struct acpi_lid_softc *)context;
226 case ACPI_NOTIFY_STATUS_CHANGED:
227 AcpiOsExecute(OSL_NOTIFY_HANDLER,
228 acpi_lid_notify_status_changed, sc);
231 device_printf(sc->lid_dev, "unknown notify %#x\n", notify);