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 "opt_evdev.h"
35 #include <sys/param.h>
36 #include <sys/eventhandler.h>
37 #include <sys/kernel.h>
38 #include <sys/module.h>
42 #include <contrib/dev/acpica/include/acpi.h>
43 #include <contrib/dev/acpica/include/accommon.h>
45 #include <dev/acpica/acpivar.h>
48 #include <dev/evdev/input.h>
49 #include <dev/evdev/evdev.h>
52 /* Hooks for the ACPI CA debugging infrastructure */
53 #define _COMPONENT ACPI_BUTTON
54 ACPI_MODULE_NAME("LID")
56 struct acpi_lid_softc {
58 ACPI_HANDLE lid_handle;
59 int lid_status; /* open or closed */
61 struct evdev_dev *lid_evdev;
65 ACPI_HANDLE acpi_lid_handle;
67 ACPI_SERIAL_DECL(lid, "ACPI lid");
69 static int acpi_lid_probe(device_t dev);
70 static int acpi_lid_attach(device_t dev);
71 static int acpi_lid_suspend(device_t dev);
72 static int acpi_lid_resume(device_t dev);
73 static void acpi_lid_notify_status_changed(void *arg);
74 static void acpi_lid_notify_handler(ACPI_HANDLE h, UINT32 notify,
77 static device_method_t acpi_lid_methods[] = {
78 /* Device interface */
79 DEVMETHOD(device_probe, acpi_lid_probe),
80 DEVMETHOD(device_attach, acpi_lid_attach),
81 DEVMETHOD(device_suspend, acpi_lid_suspend),
82 DEVMETHOD(device_resume, acpi_lid_resume),
87 static driver_t acpi_lid_driver = {
90 sizeof(struct acpi_lid_softc),
93 static devclass_t acpi_lid_devclass;
94 DRIVER_MODULE(acpi_lid, acpi, acpi_lid_driver, acpi_lid_devclass, 0, 0);
95 MODULE_DEPEND(acpi_lid, acpi, 1, 1, 1);
98 acpi_lid_status_update(struct acpi_lid_softc *sc)
103 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
106 * Evaluate _LID and check the return value, update lid status.
107 * Zero: The lid is closed
108 * Non-zero: The lid is open
110 status = acpi_GetInteger(sc->lid_handle, "_LID", &lid_status);
111 if (ACPI_FAILURE(status))
112 lid_status = 1; /* assume lid is opened */
114 /* range check value */
115 sc->lid_status = lid_status ? 1 : 0;
117 /* Send notification via devd */
118 acpi_UserNotify("Lid", sc->lid_handle, sc->lid_status);
121 /* Notify evdev about lid status */
122 evdev_push_sw(sc->lid_evdev, SW_LID, lid_status ? 0 : 1);
123 evdev_sync(sc->lid_evdev);
128 acpi_lid_probe(device_t dev)
130 static char *lid_ids[] = { "PNP0C0D", NULL };
133 if (acpi_disabled("lid"))
135 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, lid_ids, NULL);
137 device_set_desc(dev, "Control Method Lid Switch");
142 acpi_lid_attach(device_t dev)
144 struct acpi_prw_data prw;
145 struct acpi_lid_softc *sc;
147 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
149 sc = device_get_softc(dev);
151 acpi_lid_handle = sc->lid_handle = acpi_get_handle(dev);
154 /* Register evdev device before initial status update */
155 sc->lid_evdev = evdev_alloc();
156 evdev_set_name(sc->lid_evdev, device_get_desc(dev));
157 evdev_set_phys(sc->lid_evdev, device_get_nameunit(dev));
158 evdev_set_id(sc->lid_evdev, BUS_HOST, 0, 0, 1);
159 evdev_support_event(sc->lid_evdev, EV_SYN);
160 evdev_support_event(sc->lid_evdev, EV_SW);
161 evdev_support_sw(sc->lid_evdev, SW_LID);
163 if (evdev_register(sc->lid_evdev))
168 * If a system does not get lid events, it may make sense to change
169 * the type to ACPI_ALL_NOTIFY. Some systems generate both a wake and
170 * runtime notify in that case though.
172 AcpiInstallNotifyHandler(sc->lid_handle, ACPI_DEVICE_NOTIFY,
173 acpi_lid_notify_handler, sc);
175 /* Enable the GPE for wake/runtime. */
176 acpi_wake_set_enable(dev, 1);
177 if (acpi_parse_prw(sc->lid_handle, &prw) == 0)
178 AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit);
180 /* Get the initial lid status */
181 acpi_lid_status_update(sc);
184 * Export the lid status
186 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
187 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
188 "state", CTLFLAG_RD, &sc->lid_status, 0,
189 "Device state (0 = closed, 1 = open)");
195 acpi_lid_suspend(device_t dev)
201 acpi_lid_resume(device_t dev)
203 struct acpi_lid_softc *sc;
205 sc = device_get_softc(dev);
207 /* Update lid status, if any */
208 acpi_lid_status_update(sc);
214 acpi_lid_notify_status_changed(void *arg)
216 struct acpi_lid_softc *sc;
217 struct acpi_softc *acpi_sc;
219 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
221 sc = (struct acpi_lid_softc *)arg;
222 ACPI_SERIAL_BEGIN(lid);
224 /* Update lid status, if any */
225 acpi_lid_status_update(sc);
227 acpi_sc = acpi_device_get_parent_softc(sc->lid_dev);
231 ACPI_VPRINT(sc->lid_dev, acpi_sc, "Lid %s\n",
232 sc->lid_status ? "opened" : "closed");
234 acpi_UserNotify("Lid", sc->lid_handle, sc->lid_status);
236 if (sc->lid_status == 0)
237 EVENTHANDLER_INVOKE(acpi_sleep_event, acpi_sc->acpi_lid_switch_sx);
239 EVENTHANDLER_INVOKE(acpi_wakeup_event, acpi_sc->acpi_lid_switch_sx);
242 ACPI_SERIAL_END(lid);
246 /* XXX maybe not here */
247 #define ACPI_NOTIFY_STATUS_CHANGED 0x80
250 acpi_lid_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
252 struct acpi_lid_softc *sc;
254 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
256 sc = (struct acpi_lid_softc *)context;
258 case ACPI_NOTIFY_STATUS_CHANGED:
259 AcpiOsExecute(OSL_NOTIFY_HANDLER,
260 acpi_lid_notify_status_changed, sc);
263 device_printf(sc->lid_dev, "unknown notify %#x\n", notify);