text: /* 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_A_LOSS_CTRL		0x19
  #define NB7V904M_REG_CH_B_FLAT_GAIN		0x1a
  #define NB7V904M_REG_CH_B_LOSS_CTRL		0x1b
  #define NB7V904M_REG_CH_C_FLAT_GAIN		0x1c
  #define NB7V904M_REG_CH_C_LOSS_CTRL		0x1d
  #define NB7V904M_REG_CH_D_FLAT_GAIN		0x1e
  #define NB7V904M_REG_CH_D_LOSS_CTRL		0x1f
  
  /* 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
  
  /* 0x19 - Channel A Loss Profile Matching Control */
  /* 0x1b - Channel B Loss Profile Matching Control */
  /* 0x1d - Channel C Loss Profile Matching Control */
  /* 0x1f - Channel D Loss Profile Matching Control */
  #define NB7V904M_LOSS_PROFILE_A		0x00
  #define NB7V904M_LOSS_PROFILE_B		0x01
  #define NB7V904M_LOSS_PROFILE_C		0x02
  #define NB7V904M_LOSS_PROFILE_D		0x03
  
  extern const struct usb_mux_driver nb7v904m_usb_redriver_drv;
  #ifdef CONFIG_NB7V904M_LPM_OVERRIDE
  extern int nb7v904m_lpm_disable;
  #endif
  
  /* 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);
  /* Use this value if loss profile control  wants to be skipped  */
  #define NB7V904M_CH_ALL_SKIP_LOSS	0xff
  /* Control channel Loss Profile Matching */
  int nb7v904m_set_loss_profile_match(const struct usb_mux *me, uint8_t loss_a,
  			uint8_t loss_b, uint8_t loss_c, uint8_t loss_d);
  /* Control mapping between AUX and SBU */
  int nb7v904m_set_aux_ch_switch(const struct usb_mux *me, uint8_t aux_ch);
  #endif /* __CROS_EC_USB_REDRIVER_NB7V904M_H */
  