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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 built-in
     keyboard.

Change-Id: I204a59f8a19137d6a192ea2d89939eefcd5d41ce
Signed-off-by: Shaunak Saha <shaunak.saha@intel.com>
Reviewed-on: https://review.coreboot.org/16299
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Shaunak Saha 2016-08-22 22:05:35 -07:00 committed by Aaron Durbin
parent d6bb5495f9
commit de9fed4c2a
1 changed files with 3 additions and 1 deletions
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4
src/soc/intel/common/smihandler.c
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@ -176,7 +176,9 @@ 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 the gpio gpe0 status bits in ACPI registers */
clear_gpi_gpe_sts();
/* Tri-state specific GPIOS to avoid leakage during S3/S5 */