1 files changed, 59 insertions, 0 deletions
diff --git a/board/servo_v4p1/pi3usb9201.h b/board/servo_v4p1/pi3usb9201.h
new file mode 100644
index 0000000000..826db8b871
--- /dev/null
+++ b/board/servo_v4p1/pi3usb9201.h
@@ -0,0 +1,59 @@
+/* Copyright 2020 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.
+ */
+
+#ifndef __CROS_EC_PI3USB9201_H
+#define __CROS_EC_PI3USB9201_H
+
+enum pi3usb9201_reg_t {
+	CTRL_REG1,
+	CTRL_REG2,
+	CLIENT_STATUS,
+	HOST_STATUS
+};
+
+enum pi3usb9201_dat_t {
+	POWER_DOWN	= 0x0,
+	SDP_HOST_MODE	= 0x2,
+	DCP_HOST_MODE	= 0x4,
+	CDP_HOST_MODE	= 0x6,
+	CLIENT_MODE	= 0x8,
+	USB_PATH_ON	= 0xe
+};
+
+
+/* Client Status bits */
+#define CS_DCP			BIT(7)
+#define CS_SDP			BIT(6)
+#define CS_CDP			BIT(5)
+#define CS_1A_CHARGER		BIT(3)
+#define CS_2A_CHARGER		BIT(2)
+#define CS_2_4A_CHARGER		BIT(1)
+
+/* Host Status bits */
+#define HS_USB_UNPLUGGED	BIT(2)
+#define HS_USB_PLUGGED		BIT(1)
+#define HS_BC1_2		BIT(0)
+
+/**
+ * Selects Client Mode and client mode detection
+ */
+void init_pi3usb9201(void);
+
+/**
+ * Write a byte to the pi3usb9201
+ *
+ * @param reg	register to write
+ * @param dat	data to write to the register
+ */
+void write_pi3usb9201(enum pi3usb9201_reg_t reg, enum pi3usb9201_dat_t dat);
+
+/**
+ * Read a byte from the pi3usb9201
+ *
+ * @param return	data byte read from pi3usb9201
+ */
+uint8_t read_pi3usb9201(enum pi3usb9201_reg_t reg);
+
+#endif /* __CROS_EC_PI3USB9201_H */