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/* $OpenBSD: acpi_x86.c,v 1.17 2023/07/06 06:58:07 deraadt Exp $ */
/*
* Copyright (c) 2005 Thorsten Lockert <tholo@sigmasoft.com>
* Copyright (c) 2005 Jordan Hargrave <jordan@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <dev/acpi/acpireg.h>
#include <dev/acpi/acpivar.h>
#include <dev/acpi/acpidev.h>
#include <dev/acpi/dsdt.h>
#include <machine/apmvar.h>
int
sleep_showstate(void *v, int sleepmode)
{
struct acpi_softc *sc = v;
switch (sleepmode) {
case SLEEP_SUSPEND:
sc->sc_state = ACPI_STATE_S3;
break;
case SLEEP_HIBERNATE:
sc->sc_state = ACPI_STATE_S4;
break;
default:
return (EOPNOTSUPP);
}
if (sc->sc_sleeptype[sc->sc_state].slp_typa == -1 ||
sc->sc_sleeptype[sc->sc_state].slp_typb == -1) {
if (sc->sc_state == ACPI_STATE_S4) {
sc->sc_state = ACPI_STATE_S5; /* No S4, use S5 */
printf("%s: S4 unavailable, using S5\n",
sc->sc_dev.dv_xname);
} else {
printf("%s: state S%d unavailable\n",
sc->sc_dev.dv_xname, sc->sc_state);
return (EOPNOTSUPP);
}
}
/* 1st suspend AML step: _TTS(tostate) */
if (aml_node_setval(sc, sc->sc_tts, sc->sc_state) != 0)
return (EINVAL);
acpi_indicator(sc, ACPI_SST_WAKING); /* blink */
return 0;
}
int
sleep_setstate(void *v)
{
struct acpi_softc *sc = v;
/* 2nd suspend AML step: _PTS(tostate) */
if (aml_node_setval(sc, sc->sc_pts, sc->sc_state) != 0)
return (EINVAL);
acpi_indicator(sc, ACPI_SST_WAKING); /* blink */
return 0;
}
int
gosleep(void *v)
{
struct acpi_softc *sc = v;
int ret;
acpibtn_enable_psw(); /* enable _LID for wakeup */
acpi_indicator(sc, ACPI_SST_SLEEPING);
/* 3rd suspend AML step: _GTS(tostate) */
aml_node_setval(sc, sc->sc_gts, sc->sc_state);
/* Clear fixed event status */
acpi_write_pmreg(sc, ACPIREG_PM1_STS, 0, ACPI_PM1_ALL_STS);
/* Enable wake GPEs */
acpi_disable_allgpes(sc);
acpi_enable_wakegpes(sc, sc->sc_state);
ret = acpi_sleep_cpu(sc, sc->sc_state);
acpi_resume_cpu(sc, sc->sc_state);
sc->sc_state = ACPI_STATE_S0;
return ret;
}
void
sleep_abort(void *v)
{
struct acpi_softc *sc = v;
sc->sc_state = ACPI_STATE_S0;
}
int
sleep_resume(void *v)
{
struct acpi_softc *sc = v;
acpibtn_disable_psw(); /* disable _LID for wakeup */
/* 3rd resume AML step: _TTS(runstate) */
if (aml_node_setval(sc, sc->sc_tts, sc->sc_state) != 0)
return (EINVAL);
acpi_indicator(sc, ACPI_SST_WAKING); /* blink */
return 0;
}
static int
checklids(struct acpi_softc *sc)
{
extern int lid_action;
int lids;
lids = acpibtn_numopenlids();
if (lids == 0 && lid_action != 0)
return EAGAIN;
return 0;
}
int
suspend_finish(void *v)
{
struct acpi_softc *sc = v;
acpi_record_event(sc, APM_NORMAL_RESUME);
acpi_indicator(sc, ACPI_SST_WORKING);
/* If we woke up but all the lids are closed, go back to sleep */
return checklids(sc);
}
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