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Add a sysctl, 'debug.acpi.suspend_bounce', that causes the system to bounce

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back in a simulated resume instead of entering the requested suspend state.
This helps in testing drivers separately from the acpi suspend code.  To
test your drivers, set debug.acpi.suspend_bounce=1 and then run
acpiconf -s3 (or 4).

MFC after:	1 day
This commit is contained in:
Nate Lawson 2007-05-25 05:26:21 +00:00
parent 10f39c7d37
commit 93bfd059fd
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=169973
1 changed files with 8 additions and 0 deletions
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8
sys/dev/acpica/acpi.c
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@ -242,6 +242,10 @@ SYSCTL_INT(_debug_acpi, OID_AUTO, do_powerstate, CTLFLAG_RW,
/* Allow users to override quirks. */
TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
static int acpi_susp_bounce;
SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
&acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
/*
* ACPI can only be loaded as a module by the loader; activating it after
* system bootstrap time is not useful, and can be fatal to the system.
@ -2198,6 +2202,10 @@ acpi_SetSleepState(struct acpi_softc *sc, int state)
}
slp_state = ACPI_SS_DEV_SUSPEND;
/* If testing device suspend only, back out of everything here. */
if (acpi_susp_bounce)
break;
status = AcpiEnterSleepStatePrep(state);
if (ACPI_FAILURE(status)) {
device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",