Module Name: src
Committed By: jruoho
Date: Sun Apr 25 10:05:23 UTC 2010
Modified Files:
src/sys/dev/acpi: acpi.c
Log Message:
Evaluate _TTS on sleep state transitions. This is mainly to pro-actively
support some weird BIOS, which may require the evaluation. Ok jmcne...@.
To generate a diff of this commit:
cvs rdiff -u -r1.188 -r1.189 src/sys/dev/acpi/acpi.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/dev/acpi/acpi.c
diff -u src/sys/dev/acpi/acpi.c:1.188 src/sys/dev/acpi/acpi.c:1.189
--- src/sys/dev/acpi/acpi.c:1.188 Sun Apr 25 09:12:38 2010
+++ src/sys/dev/acpi/acpi.c Sun Apr 25 10:05:22 2010
@@ -1,4 +1,4 @@
-/* $NetBSD: acpi.c,v 1.188 2010/04/25 09:12:38 jruoho Exp $ */
+/* $NetBSD: acpi.c,v 1.189 2010/04/25 10:05:22 jruoho Exp $ */
/*-
* Copyright (c) 2003, 2007 The NetBSD Foundation, Inc.
@@ -65,7 +65,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: acpi.c,v 1.188 2010/04/25 09:12:38 jruoho Exp $");
+__KERNEL_RCSID(0, "$NetBSD: acpi.c,v 1.189 2010/04/25 10:05:22 jruoho Exp $");
#include "opt_acpi.h"
#include "opt_pcifixup.h"
@@ -1463,6 +1463,19 @@
}
/*
+ * Evaluate the _TTS method, which should be called
+ * before _PTS. We should also re-evaluate this once
+ * we return to S0 (see ACPI 3.0, section 7.3.6).
+ * In reality, _TTS is seldom seen in the field.
+ */
+ rv = acpi_eval_set_integer(NULL, "\\_TTS", state);
+
+ if (ACPI_SUCCESS(rv))
+ aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n");
+
+ rv = AE_OK;
+
+ /*
* This will evaluate the _PTS and _SST methods,
* but unlike the documentation claims, not _GTS,
* which is evaluated in AcpiEnterSleepState().
@@ -1504,8 +1517,11 @@
}
break;
+
case ACPI_STATE_S5:
+ (void)acpi_eval_set_integer(NULL, "\\_TTS", state);
+
rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
if (ACPI_FAILURE(rv)) {
@@ -1522,11 +1538,14 @@
(void)AcpiEnterSleepState(ACPI_STATE_S5);
aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n");
+
break;
}
sc->sc_sleepstate = ACPI_STATE_S0;
+ (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0);
+
return rv;
}
