1 files changed, 36 insertions, 0 deletions
diff --git a/src/mainboard/lenovo/g505s/ec.c b/src/mainboard/lenovo/g505s/ec.c
new file mode 100644
index 0000000000..61f70b7a4e
--- /dev/null
+++ b/src/mainboard/lenovo/g505s/ec.c
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2014 Alexandru Gagniuc <mr.nuke.me@gmail.com>
+ * Subject to the GNU GPL v2, or (at your option) any later version.
+ */
+
+#include "ec.h"
+#include <ec/compal/ene932/ec.h>
+
+/* The keyboard matrix tells the EC how the keyboard is wired internally */
+static void set_keyboard_matrix_us(void)
+{
+	ec_kbc_write_cmd(0x59);
+	ec_kbc_write_ib(0xE5);
+}
+
+/* Tell EC to operate in APM mode. Events generate SMIs instead of SCIs */
+static void enter_apm_mode(void)
+{
+	ec_kbc_write_cmd(0x59);
+	ec_kbc_write_ib(0xE9);
+}
+
+void lenovo_g505s_ec_init(void)
+{
+	set_keyboard_matrix_us();
+
+	/*
+	 * The EC has a special "blinking Caps Lock LED" mode which it normally
+	 * enters when it believes the OS is not responding. It occasionally
+	 * disables battery charging when in this mode, although other
+	 * functionality is unaffected. Although the EC starts in APM mode by
+	 * default, it only leaves the "blinking Caps Lock LED" mode after
+	 * receiving the following command.
+	 */
+	enter_apm_mode();
+}