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/* 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.
*
* ON Semiconductor NB7V904M USB Type-C DisplayPort Alt Mode Redriver
*/
#ifndef __CROS_EC_USB_REDRIVER_NB7V904M_H
#define __CROS_EC_USB_REDRIVER_NB7V904M_H
#include "compile_time_macros.h"
#include "usb_mux.h"
#define NB7V904M_I2C_ADDR0 0x19
#define NB7V904M_I2C_ADDR1 0x1A
#define NB7V904M_I2C_ADDR2 0x1C
/* Registers */
#define NB7V904M_REG_GEN_DEV_SETTINGS 0x00
#define NB7V904M_REG_CH_A_EQ_SETTINGS 0x01
#define NB7V904M_REG_CH_B_EQ_SETTINGS 0x03
#define NB7V904M_REG_CH_C_EQ_SETTINGS 0x05
#define NB7V904M_REG_CH_D_EQ_SETTINGS 0x07
#define NB7V904M_REG_AUX_CH_CTRL 0x09
#define NB7V904M_REG_CH_A_FLAT_GAIN 0x18
#define NB7V904M_REG_CH_B_FLAT_GAIN 0x1a
#define NB7V904M_REG_CH_C_FLAT_GAIN 0x1c
#define NB7V904M_REG_CH_D_FLAT_GAIN 0x1e
/* 0x00 - General Device Settings */
#define NB7V904M_CHIP_EN BIT(0)
#define NB7V904M_USB_DP_NORMAL BIT(1)
#define NB7V904M_USB_DP_FLIPPED 0
#define NB7V904M_DP_ONLY BIT(2)
#define NB7V904M_USB_ONLY (BIT(3) | BIT(1))
#define NB7V904M_OP_MODE_MASK GENMASK(3, 1)
#define NB7V904M_CH_A_EN BIT(4)
#define NB7V904M_CH_B_EN BIT(5)
#define NB7V904M_CH_C_EN BIT(6)
#define NB7V904M_CH_D_EN BIT(7)
#define NB7V904M_CH_EN_MASK GENMASK(7, 4)
/* 0x01 - Channel A Equalization Settings */
#define NB7V904M_CH_A_EQ_0_DB 0x0a
#define NB7V904M_CH_A_EQ_2_DB 0x08
#define NB7V904M_CH_A_EQ_4_DB 0x0e
#define NB7V904M_CH_A_EQ_6_DB 0x0c
#define NB7V904M_CH_A_EQ_8_DB 0x02
#define NB7V904M_CH_A_EQ_10_DB 0x00
/* 0x03 - Channel B Equalization Settings */
#define NB7V904M_CH_B_EQ_0_DB 0x0e
#define NB7V904M_CH_B_EQ_2_DB 0x0c
#define NB7V904M_CH_B_EQ_4_DB 0x0a
#define NB7V904M_CH_B_EQ_6_DB 0x08
#define NB7V904M_CH_B_EQ_8_DB 0x06
#define NB7V904M_CH_B_EQ_10_DB 0x00
/* 0x05 - Channel C Equalization Settings */
#define NB7V904M_CH_C_EQ_0_DB 0x0e
#define NB7V904M_CH_C_EQ_2_DB 0x0c
#define NB7V904M_CH_C_EQ_4_DB 0x0a
#define NB7V904M_CH_C_EQ_6_DB 0x08
#define NB7V904M_CH_C_EQ_8_DB 0x06
#define NB7V904M_CH_C_EQ_10_DB 0x00
/* 0x07 - Channel D Equalization Settings */
#define NB7V904M_CH_D_EQ_0_DB 0x0a
#define NB7V904M_CH_D_EQ_2_DB 0x08
#define NB7V904M_CH_D_EQ_4_DB 0x0e
#define NB7V904M_CH_D_EQ_6_DB 0x0c
#define NB7V904M_CH_D_EQ_8_DB 0x02
#define NB7V904M_CH_D_EQ_10_DB 0x00
/* 0x09 - Auxiliary Channel Control */
#define NB7V904M_AUX_CH_NORMAL 0
#define NB7V904M_AUX_CH_FLIPPED BIT(0)
#define NB7V904M_AUX_CH_HI_Z BIT(1)
/* 0x18 - Channel A Flag Gain */
#define NB7V904M_CH_A_GAIN_0_DB 0x00
#define NB7V904M_CH_A_GAIN_1P5_DB 0x02
#define NB7V904M_CH_A_GAIN_3P5_DB 0x03
/* 0x1a - Channel B Flag Gain */
#define NB7V904M_CH_B_GAIN_0_DB 0x03
#define NB7V904M_CH_B_GAIN_1P5_DB 0x01
#define NB7V904M_CH_B_GAIN_3P5_DB 0x00
/* 0x1c - Channel C Flag Gain */
#define NB7V904M_CH_C_GAIN_0_DB 0x03
#define NB7V904M_CH_C_GAIN_1P5_DB 0x01
#define NB7V904M_CH_C_GAIN_3P5_DB 0x00
/* 0x1e - Channel D Flag Gain */
#define NB7V904M_CH_D_GAIN_0_DB 0x00
#define NB7V904M_CH_D_GAIN_1P5_DB 0x02
#define NB7V904M_CH_D_GAIN_3P5_DB 0x03
extern const struct usb_mux_driver nb7v904m_usb_redriver_drv;
/* Use this value if tuning eq wants to be skipped */
#define NB7V904M_CH_ALL_SKIP_EQ 0xff
int nb7v904m_tune_usb_set_eq(const struct usb_mux *me, uint8_t eq_a,
uint8_t eq_b, uint8_t eq_c, uint8_t eq_d);
/* Use this value if tuning gain wants to be skipped */
#define NB7V904M_CH_ALL_SKIP_GAIN 0xff
int nb7v904m_tune_usb_flat_gain(const struct usb_mux *me, uint8_t gain_a,
uint8_t gain_b, uint8_t gain_c, uint8_t gain_d);
#endif /* __CROS_EC_USB_REDRIVER_NB7V904M_H */
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