2 files changed, 46 insertions, 0 deletions
diff --git a/zephyr/projects/herobrine/herobrine_npcx9/src/i2c.c b/zephyr/projects/herobrine/herobrine_npcx9/src/i2c.c
new file mode 100644
index 0000000000..f78ea56513
--- /dev/null
+++ b/zephyr/projects/herobrine/herobrine_npcx9/src/i2c.c
@@ -0,0 +1,17 @@
+/* Copyright 2021 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "i2c/i2c.h"
+#include "i2c.h"
+
+/* Herobrine-NPCX9 board specific i2c implementation */
+
+#ifdef CONFIG_PLATFORM_EC_I2C_PASSTHRU_RESTRICTED
+int board_allow_i2c_passthru(int port)
+{
+	return (i2c_get_device_for_port(port) ==
+		i2c_get_device_for_port(I2C_PORT_VIRTUAL_BATTERY));
+}
+#endif
diff --git a/zephyr/projects/herobrine/herobrine_npcx9/src/sensors.c b/zephyr/projects/herobrine/herobrine_npcx9/src/sensors.c
new file mode 100644
index 0000000000..dd9ce10a16
--- /dev/null
+++ b/zephyr/projects/herobrine/herobrine_npcx9/src/sensors.c
@@ -0,0 +1,29 @@
+/* Copyright 2021 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "chipset.h"
+#include "common.h"
+#include "keyboard_scan.h"
+
+/* Herobrine-NPCX9 board specific sensor implementation */
+
+#ifdef CONFIG_LID_ANGLE_UPDATE
+void lid_angle_peripheral_enable(int enable)
+{
+	int chipset_in_s0 = chipset_in_state(CHIPSET_STATE_ON);
+
+	if (enable) {
+		keyboard_scan_enable(1, KB_SCAN_DISABLE_LID_ANGLE);
+	} else {
+		/*
+		 * Ensure that the chipset is off before disabling the keyboard.
+		 * When the chipset is on, the EC keeps the keyboard enabled and
+		 * the AP decides whether to ignore input devices or not.
+		 */
+		if (!chipset_in_s0)
+			keyboard_scan_enable(0, KB_SCAN_DISABLE_LID_ANGLE);
+	}
+}
+#endif