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Add new loader tunable hw.acpi.ec.event_driven so that we control

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EcWaitEventIntr()'s behavior.
Some EC controllers require this for working properly (including
sleep/wakeup).
This commit is contained in:
Mitsuru IWASAKI 2002-10-24 10:56:33 +00:00
parent 56e77afa59
commit 4690674e12
1 changed files with 4 additions and 1 deletions
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5
sys/dev/acpica/acpi_ec.c
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@ -244,6 +244,9 @@ struct acpi_ec_softc {
int ec_csrvalue;
};
static int acpi_ec_event_driven = 0;
TUNABLE_INT("hw.acpi.ec.event_driven", &acpi_ec_event_driven);
#define EC_LOCK_TIMEOUT 1000 /* 1ms */
static __inline ACPI_STATUS
@ -618,7 +621,7 @@ EcWaitEventIntr(struct acpi_ec_softc *sc, EC_EVENT Event)
ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, (UINT32)Event);
/* XXX this should test whether interrupts are available some other way */
if(cold)
if (cold || acpi_ec_event_driven)
return_ACPI_STATUS(EcWaitEvent(sc, Event));
if (!EcIsLocked(sc))