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-rw-r--r--src/ec/google/chromeec/acpi/ec.asl4
-rw-r--r--src/ec/google/chromeec/acpi/keyboard_backlight.asl42
2 files changed, 46 insertions, 0 deletions
diff --git a/src/ec/google/chromeec/acpi/ec.asl b/src/ec/google/chromeec/acpi/ec.asl
index 746060ec56..8b4f91d8c8 100644
--- a/src/ec/google/chromeec/acpi/ec.asl
+++ b/src/ec/google/chromeec/acpi/ec.asl
@@ -420,6 +420,10 @@ Device (EC0)
#include "als.asl"
#endif
+#ifdef EC_ENABLE_KEYBOARD_BACKLIGHT
+ #include "keyboard_backlight.asl"
+#endif
+
#ifdef EC_ENABLE_PD_MCU_DEVICE
#include "pd.asl"
#endif
diff --git a/src/ec/google/chromeec/acpi/keyboard_backlight.asl b/src/ec/google/chromeec/acpi/keyboard_backlight.asl
new file mode 100644
index 0000000000..608994e435
--- /dev/null
+++ b/src/ec/google/chromeec/acpi/keyboard_backlight.asl
@@ -0,0 +1,42 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2015 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc.
+ */
+
+Scope (\_SB)
+{
+ /*
+ * Chrome EC Keyboard Backlight interface
+ */
+ Device (KBLT)
+ {
+ Name (_HID, "GOOG0002")
+ Name (_UID, 1)
+
+ /* Read current backlight value */
+ Method (KBQC, 0, NotSerialized)
+ {
+ Return (\_SB.PCI0.LPCB.EC0.KBLV)
+ }
+
+ /* Write new backlight value */
+ Method (KBCM, 1, NotSerialized)
+ {
+ Store (Arg0, \_SB.PCI0.LPCB.EC0.KBLV)
+ }
+ }
+}