freebsd-dev/sys/dev/acpica/acpi_button.c

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/*-
* 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.
*/
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#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_acpi.h"
#include <sys/param.h>
#include <sys/kernel.h>
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#include <sys/module.h>
#include <sys/bus.h>
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#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")
- Convert a lot of homebrew debugging output to use the ACPI CA debugging infrastructure. It's not perfect, but it's a lot better than what we've been using so far. The following rules apply to this: o BSD component names should be capitalised o Layer names should be taken from the non-CA set for now. We may elect to add some new BSD-specific layers later. - Make it possible to turn off selective debugging flags or layers by listing them in debug.acpi.layer or debug.acpi.level prefixed with !. - Fully implement support for avoiding nodes in the ACPI namespace. Nodes may be listed in the debug.acpi.avoid environment variable; these nodes and all their children will be ignored (although still scanned over) by ACPI functions which scan the namespace. Multiple nodes can be specified, separated by whitespace. - Implement support for selectively disabling ACPI subsystem components via the debug.acpi.disable environment variable. The following components can be disabled: o bus creation/scanning of the ACPI 'bus' o children attachment of children to the ACPI 'bus' o button the acpi_button control-method button driver o ec the acpi_ec embedded-controller driver o isa acpi replacement of PnP BIOS for ISA device discovery o lid the control-method lid switch driver o pci pci root-bus discovery o processor CPU power/speed management o thermal system temperature detection and control o timer ACPI timecounter Multiple components may be disabled by specifying their name(s) separated by whitespace. - Add support for ioctl registration. ACPI subsystem components may register ioctl handlers with the /dev/acpi generic ioctl handler, allowing us to avoid the need for a multitude of /dev/acpi* control devices, etc.
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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),
DEVMETHOD_END
};
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)
{
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struct acpi_prw_data prw;
struct acpi_button_softc *sc;
ACPI_STATUS status;
int event;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
- Convert a lot of homebrew debugging output to use the ACPI CA debugging infrastructure. It's not perfect, but it's a lot better than what we've been using so far. The following rules apply to this: o BSD component names should be capitalised o Layer names should be taken from the non-CA set for now. We may elect to add some new BSD-specific layers later. - Make it possible to turn off selective debugging flags or layers by listing them in debug.acpi.layer or debug.acpi.level prefixed with !. - Fully implement support for avoiding nodes in the ACPI namespace. Nodes may be listed in the debug.acpi.avoid environment variable; these nodes and all their children will be ignored (although still scanned over) by ACPI functions which scan the namespace. Multiple nodes can be specified, separated by whitespace. - Implement support for selectively disabling ACPI subsystem components via the debug.acpi.disable environment variable. The following components can be disabled: o bus creation/scanning of the ACPI 'bus' o children attachment of children to the ACPI 'bus' o button the acpi_button control-method button driver o ec the acpi_ec embedded-controller driver o isa acpi replacement of PnP BIOS for ISA device discovery o lid the control-method lid switch driver o pci pci root-bus discovery o processor CPU power/speed management o thermal system temperature detection and control o timer ACPI timecounter Multiple components may be disabled by specifying their name(s) separated by whitespace. - Add support for ioctl registration. ACPI subsystem components may register ioctl handlers with the /dev/acpi generic ioctl handler, allowing us to avoid the need for a multitude of /dev/acpi* control devices, etc.
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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);
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if (acpi_parse_prw(sc->button_handle, &prw) == 0)
AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit);
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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__);
- Convert a lot of homebrew debugging output to use the ACPI CA debugging infrastructure. It's not perfect, but it's a lot better than what we've been using so far. The following rules apply to this: o BSD component names should be capitalised o Layer names should be taken from the non-CA set for now. We may elect to add some new BSD-specific layers later. - Make it possible to turn off selective debugging flags or layers by listing them in debug.acpi.layer or debug.acpi.level prefixed with !. - Fully implement support for avoiding nodes in the ACPI namespace. Nodes may be listed in the debug.acpi.avoid environment variable; these nodes and all their children will be ignored (although still scanned over) by ACPI functions which scan the namespace. Multiple nodes can be specified, separated by whitespace. - Implement support for selectively disabling ACPI subsystem components via the debug.acpi.disable environment variable. The following components can be disabled: o bus creation/scanning of the ACPI 'bus' o children attachment of children to the ACPI 'bus' o button the acpi_button control-method button driver o ec the acpi_ec embedded-controller driver o isa acpi replacement of PnP BIOS for ISA device discovery o lid the control-method lid switch driver o pci pci root-bus discovery o processor CPU power/speed management o thermal system temperature detection and control o timer ACPI timecounter Multiple components may be disabled by specifying their name(s) separated by whitespace. - Add support for ioctl registration. ACPI subsystem components may register ioctl handlers with the /dev/acpi generic ioctl handler, allowing us to avoid the need for a multitude of /dev/acpi* control devices, etc.
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sc = (struct acpi_button_softc *)arg;
acpi_sc = acpi_device_get_parent_softc(sc->button_dev);
if (acpi_sc == NULL)
- Convert a lot of homebrew debugging output to use the ACPI CA debugging infrastructure. It's not perfect, but it's a lot better than what we've been using so far. The following rules apply to this: o BSD component names should be capitalised o Layer names should be taken from the non-CA set for now. We may elect to add some new BSD-specific layers later. - Make it possible to turn off selective debugging flags or layers by listing them in debug.acpi.layer or debug.acpi.level prefixed with !. - Fully implement support for avoiding nodes in the ACPI namespace. Nodes may be listed in the debug.acpi.avoid environment variable; these nodes and all their children will be ignored (although still scanned over) by ACPI functions which scan the namespace. Multiple nodes can be specified, separated by whitespace. - Implement support for selectively disabling ACPI subsystem components via the debug.acpi.disable environment variable. The following components can be disabled: o bus creation/scanning of the ACPI 'bus' o children attachment of children to the ACPI 'bus' o button the acpi_button control-method button driver o ec the acpi_ec embedded-controller driver o isa acpi replacement of PnP BIOS for ISA device discovery o lid the control-method lid switch driver o pci pci root-bus discovery o processor CPU power/speed management o thermal system temperature detection and control o timer ACPI timecounter Multiple components may be disabled by specifying their name(s) separated by whitespace. - Add support for ioctl registration. ACPI subsystem components may register ioctl handlers with the /dev/acpi generic ioctl handler, allowing us to avoid the need for a multitude of /dev/acpi* control devices, etc.
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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:
- Convert a lot of homebrew debugging output to use the ACPI CA debugging infrastructure. It's not perfect, but it's a lot better than what we've been using so far. The following rules apply to this: o BSD component names should be capitalised o Layer names should be taken from the non-CA set for now. We may elect to add some new BSD-specific layers later. - Make it possible to turn off selective debugging flags or layers by listing them in debug.acpi.layer or debug.acpi.level prefixed with !. - Fully implement support for avoiding nodes in the ACPI namespace. Nodes may be listed in the debug.acpi.avoid environment variable; these nodes and all their children will be ignored (although still scanned over) by ACPI functions which scan the namespace. Multiple nodes can be specified, separated by whitespace. - Implement support for selectively disabling ACPI subsystem components via the debug.acpi.disable environment variable. The following components can be disabled: o bus creation/scanning of the ACPI 'bus' o children attachment of children to the ACPI 'bus' o button the acpi_button control-method button driver o ec the acpi_ec embedded-controller driver o isa acpi replacement of PnP BIOS for ISA device discovery o lid the control-method lid switch driver o pci pci root-bus discovery o processor CPU power/speed management o thermal system temperature detection and control o timer ACPI timecounter Multiple components may be disabled by specifying their name(s) separated by whitespace. - Add support for ioctl registration. ACPI subsystem components may register ioctl handlers with the /dev/acpi generic ioctl handler, allowing us to avoid the need for a multitude of /dev/acpi* control devices, etc.
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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__);
- Convert a lot of homebrew debugging output to use the ACPI CA debugging infrastructure. It's not perfect, but it's a lot better than what we've been using so far. The following rules apply to this: o BSD component names should be capitalised o Layer names should be taken from the non-CA set for now. We may elect to add some new BSD-specific layers later. - Make it possible to turn off selective debugging flags or layers by listing them in debug.acpi.layer or debug.acpi.level prefixed with !. - Fully implement support for avoiding nodes in the ACPI namespace. Nodes may be listed in the debug.acpi.avoid environment variable; these nodes and all their children will be ignored (although still scanned over) by ACPI functions which scan the namespace. Multiple nodes can be specified, separated by whitespace. - Implement support for selectively disabling ACPI subsystem components via the debug.acpi.disable environment variable. The following components can be disabled: o bus creation/scanning of the ACPI 'bus' o children attachment of children to the ACPI 'bus' o button the acpi_button control-method button driver o ec the acpi_ec embedded-controller driver o isa acpi replacement of PnP BIOS for ISA device discovery o lid the control-method lid switch driver o pci pci root-bus discovery o processor CPU power/speed management o thermal system temperature detection and control o timer ACPI timecounter Multiple components may be disabled by specifying their name(s) separated by whitespace. - Add support for ioctl registration. ACPI subsystem components may register ioctl handlers with the /dev/acpi generic ioctl handler, allowing us to avoid the need for a multitude of /dev/acpi* control devices, etc.
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sc = (struct acpi_button_softc *)arg;
acpi_sc = acpi_device_get_parent_softc(sc->button_dev);
if (acpi_sc == NULL)
- Convert a lot of homebrew debugging output to use the ACPI CA debugging infrastructure. It's not perfect, but it's a lot better than what we've been using so far. The following rules apply to this: o BSD component names should be capitalised o Layer names should be taken from the non-CA set for now. We may elect to add some new BSD-specific layers later. - Make it possible to turn off selective debugging flags or layers by listing them in debug.acpi.layer or debug.acpi.level prefixed with !. - Fully implement support for avoiding nodes in the ACPI namespace. Nodes may be listed in the debug.acpi.avoid environment variable; these nodes and all their children will be ignored (although still scanned over) by ACPI functions which scan the namespace. Multiple nodes can be specified, separated by whitespace. - Implement support for selectively disabling ACPI subsystem components via the debug.acpi.disable environment variable. The following components can be disabled: o bus creation/scanning of the ACPI 'bus' o children attachment of children to the ACPI 'bus' o button the acpi_button control-method button driver o ec the acpi_ec embedded-controller driver o isa acpi replacement of PnP BIOS for ISA device discovery o lid the control-method lid switch driver o pci pci root-bus discovery o processor CPU power/speed management o thermal system temperature detection and control o timer ACPI timecounter Multiple components may be disabled by specifying their name(s) separated by whitespace. - Add support for ioctl registration. ACPI subsystem components may register ioctl handlers with the /dev/acpi generic ioctl handler, allowing us to avoid the need for a multitude of /dev/acpi* control devices, etc.
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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:
- Convert a lot of homebrew debugging output to use the ACPI CA debugging infrastructure. It's not perfect, but it's a lot better than what we've been using so far. The following rules apply to this: o BSD component names should be capitalised o Layer names should be taken from the non-CA set for now. We may elect to add some new BSD-specific layers later. - Make it possible to turn off selective debugging flags or layers by listing them in debug.acpi.layer or debug.acpi.level prefixed with !. - Fully implement support for avoiding nodes in the ACPI namespace. Nodes may be listed in the debug.acpi.avoid environment variable; these nodes and all their children will be ignored (although still scanned over) by ACPI functions which scan the namespace. Multiple nodes can be specified, separated by whitespace. - Implement support for selectively disabling ACPI subsystem components via the debug.acpi.disable environment variable. The following components can be disabled: o bus creation/scanning of the ACPI 'bus' o children attachment of children to the ACPI 'bus' o button the acpi_button control-method button driver o ec the acpi_ec embedded-controller driver o isa acpi replacement of PnP BIOS for ISA device discovery o lid the control-method lid switch driver o pci pci root-bus discovery o processor CPU power/speed management o thermal system temperature detection and control o timer ACPI timecounter Multiple components may be disabled by specifying their name(s) separated by whitespace. - Add support for ioctl registration. ACPI subsystem components may register ioctl handlers with the /dev/acpi generic ioctl handler, allowing us to avoid the need for a multitude of /dev/acpi* control devices, etc.
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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);
- Convert a lot of homebrew debugging output to use the ACPI CA debugging infrastructure. It's not perfect, but it's a lot better than what we've been using so far. The following rules apply to this: o BSD component names should be capitalised o Layer names should be taken from the non-CA set for now. We may elect to add some new BSD-specific layers later. - Make it possible to turn off selective debugging flags or layers by listing them in debug.acpi.layer or debug.acpi.level prefixed with !. - Fully implement support for avoiding nodes in the ACPI namespace. Nodes may be listed in the debug.acpi.avoid environment variable; these nodes and all their children will be ignored (although still scanned over) by ACPI functions which scan the namespace. Multiple nodes can be specified, separated by whitespace. - Implement support for selectively disabling ACPI subsystem components via the debug.acpi.disable environment variable. The following components can be disabled: o bus creation/scanning of the ACPI 'bus' o children attachment of children to the ACPI 'bus' o button the acpi_button control-method button driver o ec the acpi_ec embedded-controller driver o isa acpi replacement of PnP BIOS for ISA device discovery o lid the control-method lid switch driver o pci pci root-bus discovery o processor CPU power/speed management o thermal system temperature detection and control o timer ACPI timecounter Multiple components may be disabled by specifying their name(s) separated by whitespace. - Add support for ioctl registration. ACPI subsystem components may register ioctl handlers with the /dev/acpi generic ioctl handler, allowing us to avoid the need for a multitude of /dev/acpi* control devices, etc.
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sc = (struct acpi_button_softc *)context;
switch (notify) {
case ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP:
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AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_button_notify_sleep, sc);
break;
case ACPI_NOTIFY_BUTTON_PRESSED_FOR_WAKEUP:
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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);
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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);
}