New patch to review for coreboot: intel/common: Clear wake status bits before sleep

[Shaunak Saha]

Shaunak Saha ([e-mail]) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/16299

-gerrit

commit 79a7e60b730397b4b7ae0fc88fe08df075cbf58a
Author: Shaunak Saha 
Date:   Mon Aug 22 22:05:35 2016 -0700

intel/common: Clear wake status bits before sleep

Call power management utility function clear_wake_sts
    from southbridge_smi_sleep before going to sleep.
    This is needed to clear the wake status bits in ACPI
    registers GPE0.

BUG=chrome-os-partner:55583
    BRANCH=None
    TEST=Verified that system goes to sleep on lidclose and
         powerd_dbus_suspend command issued from inbuild
         keyboard.

Change-Id: I204a59f8a19137d6a192ea2d89939eefcd5d41ce
    Signed-off-by: Shaunak Saha 
---
 src/soc/intel/common/smihandler.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/soc/intel/common/smihandler.c b/src/soc/intel/common/smihandler.c
index e27752b..ceb73e0 100644
--- a/src/soc/intel/common/smihandler.c
+++ b/src/soc/intel/common/smihandler.c
@@ -176,7 +176,8 @@ void southbridge_smi_sleep(const struct smm_save_state_ops *save_state_ops)
    	printk(BIOS_DEBUG, "SMI#: ERROR: SLP_TYP reserved\n");
    	break;
    }
-	/* Clear pending wake status bit to avoid immediate wake */
+	/* Clear set wake status bit in ACPI registers */
+	clear_wake_sts();

/* Tri-state specific GPIOS to avoid leakage during S3/S5 */