1 files changed, 110 insertions, 0 deletions
diff --git a/driver/retimer/kb800x.h b/driver/retimer/kb800x.h
new file mode 100644
index 0000000000..5f8cf2810d
--- /dev/null
+++ b/driver/retimer/kb800x.h
@@ -0,0 +1,110 @@
+/* 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.
+ *
+ * Driver for Kandou KB8001 USB-C 40 Gb/s multiprotocol switch.
+ */
+
+#ifndef __CROS_EC_KB800X_H
+#define __CROS_EC_KB800X_H
+
+#include "compile_time_macros.h"
+#include "gpio_signal.h"
+#include "usb_mux.h"
+
+#define KB800X_I2C_ADDR0_FLAGS	0x08
+#define KB800X_I2C_ADDR1_FLAGS	0x0C
+
+extern const struct usb_mux_driver kb800x_usb_mux_driver;
+
+/* Set the protocol */
+#define KB800X_REG_PROTOCOL			0x0001
+#define KB800X_PROTOCOL_USB3			0x0
+#define KB800X_PROTOCOL_DPMF			0x1
+#define KB800X_PROTOCOL_DP			0x2
+#define KB800X_PROTOCOL_CIO			0x3
+
+/* Configure the lane orientaitons */
+#define KB800X_REG_ORIENTATION			0x0002
+#define KB800X_ORIENTATION_POLARITY		0x1
+#define KB800X_ORIENTATION_DP_UFP		0x4
+#define KB800X_ORIENTATION_DP_DFP		0x6
+#define KB800X_ORIENTATION_CIO_LANE_SWAP	0x8
+/* Select one, 0x0 for non-legacy */
+#define KB800X_ORIENTATION_CIO_LEGACY_PASSIVE	(0x1 << 4)
+#define KB800X_ORIENTATION_CIO_LEGACY_UNIDIR	(0x2 << 4)
+#define KB800X_ORIENTATION_CIO_LEGACY_BIDIR	(0x3 << 4)
+
+#define KB800X_REG_RESET			0x0006
+#define KB800X_RESET_FSM			BIT(0)
+#define KB800X_RESET_MM				BIT(1)
+#define KB800X_RESET_SERDES			BIT(2)
+#define KB800X_RESET_COM			BIT(3)
+#define KB800X_RESET_MASK			GENMASK(3, 0)
+
+#define KB800X_REG_XBAR_OVR			0x5040
+#define KB800X_XBAR_OVR_EN			BIT(6)
+
+/* Registers to configure the elastic buffer input connection */
+#define KB800X_REG_XBAR_EB1SEL			0x5044
+#define KB800X_REG_XBAR_EB23SEL			0x5045
+#define KB800X_REG_XBAR_EB4SEL			0x5046
+#define KB800X_REG_XBAR_EB56SEL			0x5047
+
+/* Registers to configure the elastic buffer output connection (x=0-7) */
+#define KB800X_REG_TXSEL_FROM_PHY(x)		(0x5048+((x)/2))
+
+enum kb800x_ss_lane {
+	KB800X_TX0 = 0,
+	KB800X_TX1,
+	KB800X_RX0,
+	KB800X_RX1
+};
+
+enum kb800x_phy_lane {
+	KB800X_A0 = 0,
+	KB800X_A1,
+	KB800X_B0,
+	KB800X_B1,
+	KB800X_C0,
+	KB800X_C1,
+	KB800X_D0,
+	KB800X_D1,
+	KB800X_PHY_LANE_COUNT
+};
+
+enum kb800x_eb {
+	KB800X_EB1 = 0,
+	KB800X_EB2,
+	KB800X_EB3,
+	KB800X_EB4,
+	KB800X_EB5,
+	KB800X_EB6
+};
+
+#define KB800X_FLIP_SS_LANE(x) ((x) + 1 - 2*((x) & 0x1))
+#define KB800X_LANE_NUMBER_FROM_PHY(x) ((x) & 0x1)
+#define KB800X_PHY_IS_AB(x) ((x) <= KB800X_B1)
+
+struct kb800x_control_t {
+	enum gpio_signal retimer_rst_gpio;
+	enum gpio_signal usb_ls_en_gpio;
+#ifdef CONFIG_KB800X_CUSTOM_XBAR
+	enum kb800x_ss_lane ss_lanes[KB800X_PHY_LANE_COUNT];
+#endif /* CONFIG_KB800X_CUSTOM_XBAR */
+};
+
+/*
+ * Default 'example' lane mapping. With this mapping, CONFIG_KB800X_CUSTOM_XBAR
+ * can be undefined, since a custom xbar mapping is not needed.
+ * ss_lanes = {
+ * [KB800X_A0] = KB800X_TX0, [KB800X_A1] = KB800X_RX0,
+ * [KB800X_B0] = KB800X_RX1, [KB800X_B1] = KB800X_TX1,
+ * [KB800X_C0] = KB800X_RX0, [KB800X_C1] = KB800X_TX0,
+ * [KB800X_D0] = KB800X_TX1, [KB800X_D1] = KB800X_RX1,}
+ */
+
+extern struct kb800x_control_t kb800x_control[];
+
+
+#endif /* __CROS_EC_KB800X_H  */