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/* $NetBSD: acpi_lid.c,v 1.45 2021/01/29 15:49:55 thorpej Exp $ */
/*
* Copyright 2001, 2003 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Jason R. Thorpe for Wasabi Systems, Inc.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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.
*/
/*
* ACPI Lid Switch driver.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: acpi_lid.c,v 1.45 2021/01/29 15:49:55 thorpej Exp $");
#include <sys/param.h>
#include <sys/device.h>
#include <sys/module.h>
#include <sys/systm.h>
#include <dev/acpi/acpireg.h>
#include <dev/acpi/acpivar.h>
#define _COMPONENT ACPI_LID_COMPONENT
ACPI_MODULE_NAME ("acpi_lid")
#define ACPI_NOTIFY_LID 0x80
struct acpilid_softc {
struct acpi_devnode *sc_node;
struct sysmon_pswitch sc_smpsw;
uint64_t sc_status;
};
static const struct device_compatible_entry compat_data[] = {
{ .compat = "PNP0C0D" },
DEVICE_COMPAT_EOL
};
static int acpilid_match(device_t, cfdata_t, void *);
static void acpilid_attach(device_t, device_t, void *);
static int acpilid_detach(device_t, int);
static void acpilid_status_changed(void *);
static void acpilid_notify_handler(ACPI_HANDLE, uint32_t, void *);
CFATTACH_DECL_NEW(acpilid, sizeof(struct acpilid_softc),
acpilid_match, acpilid_attach, acpilid_detach, NULL);
/*
* acpilid_match:
*
* Autoconfiguration `match' routine.
*/
static int
acpilid_match(device_t parent, cfdata_t match, void *aux)
{
struct acpi_attach_args *aa = aux;
return acpi_compatible_match(aa, compat_data);
}
/*
* acpilid_attach:
*
* Autoconfiguration `attach' routine.
*/
static void
acpilid_attach(device_t parent, device_t self, void *aux)
{
struct acpilid_softc *sc = device_private(self);
struct acpi_attach_args *aa = aux;
aprint_naive(": ACPI Lid Switch\n");
aprint_normal(": ACPI Lid Switch\n");
sc->sc_node = aa->aa_node;
sc->sc_smpsw.smpsw_name = device_xname(self);
sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_LID;
(void)pmf_device_register(self, NULL, NULL);
(void)sysmon_pswitch_register(&sc->sc_smpsw);
(void)acpi_register_notify(sc->sc_node, acpilid_notify_handler);
}
static int
acpilid_detach(device_t self, int flags)
{
struct acpilid_softc *sc = device_private(self);
pmf_device_deregister(self);
acpi_deregister_notify(sc->sc_node);
sysmon_pswitch_unregister(&sc->sc_smpsw);
return 0;
}
/*
* acpilid_status_changed:
*
* Get, and possibly display, the lid status, and take action.
*/
static void
acpilid_status_changed(void *arg)
{
device_t dv = arg;
struct acpilid_softc *sc = device_private(dv);
ACPI_STATUS rv;
rv = acpi_eval_integer(sc->sc_node->ad_handle, "_LID", &sc->sc_status);
if (ACPI_FAILURE(rv))
return;
sysmon_pswitch_event(&sc->sc_smpsw, (sc->sc_status == 0) ?
PSWITCH_EVENT_PRESSED : PSWITCH_EVENT_RELEASED);
}
/*
* acpilid_notify_handler:
*
* Callback from ACPI interrupt handler to notify us of an event.
*/
static void
acpilid_notify_handler(ACPI_HANDLE handle, uint32_t notify, void *context)
{
static const int handler = OSL_NOTIFY_HANDLER;
device_t dv = context;
switch (notify) {
case ACPI_NOTIFY_LID:
(void)AcpiOsExecute(handler, acpilid_status_changed, dv);
break;
case ACPI_NOTIFY_DEVICE_WAKE:
break;
default:
aprint_debug_dev(dv, "unknown notify 0x%02X\n", notify);
}
}
MODULE(MODULE_CLASS_DRIVER, acpilid, "sysmon_power");
#ifdef _MODULE
#include "ioconf.c"
#endif
static int
acpilid_modcmd(modcmd_t cmd, void *aux)
{
int rv = 0;
switch (cmd) {
case MODULE_CMD_INIT:
#ifdef _MODULE
rv = config_init_component(cfdriver_ioconf_acpilid,
cfattach_ioconf_acpilid, cfdata_ioconf_acpilid);
#endif
break;
case MODULE_CMD_FINI:
#ifdef _MODULE
rv = config_fini_component(cfdriver_ioconf_acpilid,
cfattach_ioconf_acpilid, cfdata_ioconf_acpilid);
#endif
break;
default:
rv = ENOTTY;
}
return rv;
}
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