1 files changed, 57 insertions, 0 deletions
diff --git a/src/mainboard/lenovo/s230u/acpi/gpe.asl b/src/mainboard/lenovo/s230u/acpi/gpe.asl
new file mode 100644
index 0000000000..a69f5629b1
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/acpi/gpe.asl
@@ -0,0 +1,57 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (c) 2017 Tobias Diedrich <ranma+coreboot@tdiedrich.de>
+ *
+ * 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.
+ */
+
+Scope (_GPE)
+{
+	Field(GPIO, ByteAcc, NoLock, Preserve)
+	{
+		Offset(0x2c),	// GPIO Invert
+		    ,   2,
+		GV02,   1,
+		    ,   1,
+		GV04,   1,
+	}
+
+	Name (PDET, Zero)
+	Method (PNOT, 2, Serialized) {
+		ShiftLeft (Arg0, Arg1, Local0)
+		Not( ShiftLeft (One, Arg1), Local1)
+		Or (Local0, And (Local1, PDET), PDET)
+		If (LEqual (PDET, Zero)) {
+			// Palm removed
+			\_SB.PCI0.LPCB.EC0.HKEY.MHKQ (0x60B1)
+		} Else {
+			// Palm detected
+			\_SB.PCI0.LPCB.EC0.HKEY.MHKQ (0x60B0)
+		}
+	}
+
+	/* Palm detect sensor 1 */
+	Method (_L12, 0, NotSerialized) {
+		// Invert trigger
+		Store(GP02, GV02)
+
+		PNOT (GP02, 0)
+	}
+
+	/* Palm detect sensor 2 */
+	Method (_L14, 0, NotSerialized) {
+		// Invert trigger
+		Store(GP04, GV04)
+
+		PNOT (GP04, 1)
+	}
+}