ec/compal/ene932: Update to use coreboot EC-mainboard API

This patch implements a simple interface between the EC and mainboard
ASL code. This interface does not rely on the preprocessor, and
prevents name conflicts by scoping the interface methods. As this
interface is documented on the coreboot wiki, an in-tree documentation
is not provided.

Change-Id: If0b09be4f5e17cc444539a30f0186590fa0b72b5
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/5515
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@gmail.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/src/mainboard/google/parrot/acpi/mainboard.asl b/src/mainboard/google/parrot/acpi/mainboard.asl
index 7b9aef0e91..4ab97330b1 100644
--- a/src/mainboard/google/parrot/acpi/mainboard.asl
+++ b/src/mainboard/google/parrot/acpi/mainboard.asl
@@ -68,4 +68,24 @@ Scope (\_SB) {
 		})
 	}
 
+	Device (MB) {
+		/* Lid open */
+		Method (LIDO) { /* Not needed on this board */ }
+		/* Lid closed */
+		Method (LIDC) { /* Not needed on this board */ }
+		/* Increase brightness */
+		Method (BRTU) { /* Not needed on this board */ }
+		/* Decrease brightness */
+		Method (BRTD) { /* Not needed on this board */ }
+		/* Switch display */
+		Method (DSPS) { /* Not needed on this board */ }
+		/* Toggle wireless */
+		Method (WLTG) { /* Not needed on this board */ }
+		/* Return lid state */
+		Method (LIDS)
+		{
+			Return (GP15)
+		}
+	}
+
 }