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-rw-r--r--sys/dev/acpica/acpi_button.c279
1 files changed, 279 insertions, 0 deletions
diff --git a/sys/dev/acpica/acpi_button.c b/sys/dev/acpica/acpi_button.c
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index 0000000..d1f774a
--- /dev/null
+++ b/sys/dev/acpica/acpi_button.c
@@ -0,0 +1,279 @@
+/*-
+ * Copyright (c) 2000 Mitsaru IWASAKI <iwasaki@jp.freebsd.org>
+ * Copyright (c) 2000 Michael Smith <msmith@freebsd.org>
+ * Copyright (c) 2000 BSDi
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include "opt_acpi.h"
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/bus.h>
+
+#include <contrib/dev/acpica/include/acpi.h>
+#include <contrib/dev/acpica/include/accommon.h>
+
+#include <dev/acpica/acpivar.h>
+
+/* Hooks for the ACPI CA debugging infrastructure */
+#define _COMPONENT ACPI_BUTTON
+ACPI_MODULE_NAME("BUTTON")
+
+struct acpi_button_softc {
+ device_t button_dev;
+ ACPI_HANDLE button_handle;
+ boolean_t button_type;
+#define ACPI_POWER_BUTTON 0
+#define ACPI_SLEEP_BUTTON 1
+ boolean_t fixed;
+};
+
+#define ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP 0x80
+#define ACPI_NOTIFY_BUTTON_PRESSED_FOR_WAKEUP 0x02
+
+static int acpi_button_probe(device_t dev);
+static int acpi_button_attach(device_t dev);
+static int acpi_button_suspend(device_t dev);
+static int acpi_button_resume(device_t dev);
+static void acpi_button_notify_handler(ACPI_HANDLE h, UINT32 notify,
+ void *context);
+static ACPI_STATUS
+ acpi_button_fixed_handler(void *context);
+static void acpi_button_notify_sleep(void *arg);
+static void acpi_button_notify_wakeup(void *arg);
+
+static char *btn_ids[] = {
+ "PNP0C0C", "ACPI_FPB", "PNP0C0E", "ACPI_FSB",
+ NULL
+};
+
+static device_method_t acpi_button_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, acpi_button_probe),
+ DEVMETHOD(device_attach, acpi_button_attach),
+ DEVMETHOD(device_suspend, acpi_button_suspend),
+ DEVMETHOD(device_shutdown, acpi_button_suspend),
+ DEVMETHOD(device_resume, acpi_button_resume),
+
+ {0, 0}
+};
+
+static driver_t acpi_button_driver = {
+ "acpi_button",
+ acpi_button_methods,
+ sizeof(struct acpi_button_softc),
+};
+
+static devclass_t acpi_button_devclass;
+DRIVER_MODULE(acpi_button, acpi, acpi_button_driver, acpi_button_devclass,
+ 0, 0);
+MODULE_DEPEND(acpi_button, acpi, 1, 1, 1);
+
+static int
+acpi_button_probe(device_t dev)
+{
+ struct acpi_button_softc *sc;
+ char *str;
+
+ if (acpi_disabled("button") ||
+ (str = ACPI_ID_PROBE(device_get_parent(dev), dev, btn_ids)) == NULL)
+ return (ENXIO);
+
+ sc = device_get_softc(dev);
+ if (strcmp(str, "PNP0C0C") == 0) {
+ device_set_desc(dev, "Power Button");
+ sc->button_type = ACPI_POWER_BUTTON;
+ } else if (strcmp(str, "ACPI_FPB") == 0) {
+ device_set_desc(dev, "Power Button (fixed)");
+ sc->button_type = ACPI_POWER_BUTTON;
+ sc->fixed = 1;
+ } else if (strcmp(str, "PNP0C0E") == 0) {
+ device_set_desc(dev, "Sleep Button");
+ sc->button_type = ACPI_SLEEP_BUTTON;
+ } else if (strcmp(str, "ACPI_FSB") == 0) {
+ device_set_desc(dev, "Sleep Button (fixed)");
+ sc->button_type = ACPI_SLEEP_BUTTON;
+ sc->fixed = 1;
+ }
+
+ return (0);
+}
+
+static int
+acpi_button_attach(device_t dev)
+{
+ struct acpi_prw_data prw;
+ struct acpi_button_softc *sc;
+ ACPI_STATUS status;
+ int event;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+
+ sc = device_get_softc(dev);
+ sc->button_dev = dev;
+ sc->button_handle = acpi_get_handle(dev);
+ event = (sc->button_type == ACPI_SLEEP_BUTTON) ?
+ ACPI_EVENT_SLEEP_BUTTON : ACPI_EVENT_POWER_BUTTON;
+
+ /*
+ * Install the new handler. We could remove any fixed handlers added
+ * from the FADT once we have a duplicate from the AML but some systems
+ * only return events on one or the other so we have to keep both.
+ */
+ if (sc->fixed) {
+ AcpiClearEvent(event);
+ status = AcpiInstallFixedEventHandler(event,
+ acpi_button_fixed_handler, sc);
+ } else {
+ /*
+ * If a system does not get lid events, it may make sense to change
+ * the type to ACPI_ALL_NOTIFY. Some systems generate both a wake
+ * and runtime notify in that case though.
+ */
+ status = AcpiInstallNotifyHandler(sc->button_handle,
+ ACPI_DEVICE_NOTIFY, acpi_button_notify_handler, sc);
+ }
+ if (ACPI_FAILURE(status)) {
+ device_printf(sc->button_dev, "couldn't install notify handler - %s\n",
+ AcpiFormatException(status));
+ return_VALUE (ENXIO);
+ }
+
+ /* Enable the GPE for wake/runtime. */
+ acpi_wake_set_enable(dev, 1);
+ if (acpi_parse_prw(sc->button_handle, &prw) == 0)
+ AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit);
+
+ return_VALUE (0);
+}
+
+static int
+acpi_button_suspend(device_t dev)
+{
+ return (0);
+}
+
+static int
+acpi_button_resume(device_t dev)
+{
+ return (0);
+}
+
+static void
+acpi_button_notify_sleep(void *arg)
+{
+ struct acpi_button_softc *sc;
+ struct acpi_softc *acpi_sc;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+
+ sc = (struct acpi_button_softc *)arg;
+ acpi_sc = acpi_device_get_parent_softc(sc->button_dev);
+ if (acpi_sc == NULL)
+ return_VOID;
+
+ acpi_UserNotify("Button", sc->button_handle, sc->button_type);
+
+ switch (sc->button_type) {
+ case ACPI_POWER_BUTTON:
+ ACPI_VPRINT(sc->button_dev, acpi_sc, "power button pressed\n");
+ acpi_event_power_button_sleep(acpi_sc);
+ break;
+ case ACPI_SLEEP_BUTTON:
+ ACPI_VPRINT(sc->button_dev, acpi_sc, "sleep button pressed\n");
+ acpi_event_sleep_button_sleep(acpi_sc);
+ break;
+ default:
+ break; /* unknown button type */
+ }
+}
+
+static void
+acpi_button_notify_wakeup(void *arg)
+{
+ struct acpi_button_softc *sc;
+ struct acpi_softc *acpi_sc;
+
+ ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
+
+ sc = (struct acpi_button_softc *)arg;
+ acpi_sc = acpi_device_get_parent_softc(sc->button_dev);
+ if (acpi_sc == NULL)
+ return_VOID;
+
+ acpi_UserNotify("Button", sc->button_handle, sc->button_type);
+
+ switch (sc->button_type) {
+ case ACPI_POWER_BUTTON:
+ ACPI_VPRINT(sc->button_dev, acpi_sc, "wakeup by power button\n");
+ acpi_event_power_button_wake(acpi_sc);
+ break;
+ case ACPI_SLEEP_BUTTON:
+ ACPI_VPRINT(sc->button_dev, acpi_sc, "wakeup by sleep button\n");
+ acpi_event_sleep_button_wake(acpi_sc);
+ break;
+ default:
+ break; /* unknown button type */
+ }
+}
+
+static void
+acpi_button_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
+{
+ struct acpi_button_softc *sc;
+
+ ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
+
+ sc = (struct acpi_button_softc *)context;
+ switch (notify) {
+ case ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP:
+ AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_button_notify_sleep, sc);
+ break;
+ case ACPI_NOTIFY_BUTTON_PRESSED_FOR_WAKEUP:
+ AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_button_notify_wakeup, sc);
+ break;
+ default:
+ device_printf(sc->button_dev, "unknown notify %#x\n", notify);
+ break;
+ }
+}
+
+static ACPI_STATUS
+acpi_button_fixed_handler(void *context)
+{
+ struct acpi_button_softc *sc = (struct acpi_button_softc *)context;
+
+ ACPI_FUNCTION_TRACE_PTR((char *)(uintptr_t)__func__, context);
+
+ if (context == NULL)
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+
+ acpi_button_notify_handler(sc->button_handle,
+ ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP, sc);
+ return_ACPI_STATUS (AE_OK);
+}
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