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/* Copyright 2021 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Parade PS8822
* USB Type-C Retiming Switch for USB Device / DisplayPort Sink
*/
#ifndef __CROS_EC_PS8822_H
#define __CROS_EC_PS8822_H
#include "usb_mux.h"
#define PS8822_I2C_ADDR0_FLAG 0x10
#define PS8822_I2C_ADDR1_FLAG 0x18
#define PS8822_I2C_ADDR2_FLAG 0x58
#define PS8822_I2C_ADDR3_FLAG 0x60
#define PS8822_REG_PAGE0 0x00
/* Mode register for setting mux */
#define PS8822_REG_MODE 0x01
#define PS8822_MODE_ALT_DP_EN BIT(7)
#define PS8822_MODE_USB_EN BIT(6)
#define PS8822_MODE_FLIP BIT(5)
#define PS8822_MODE_PIN_E BIT(4)
#define PS8822_REG_CONFIG 0x02
#define PS8822_CONFIG_HPD_IN_DIS BIT(7)
#define PS8822_CONFIG_DP_PLUG BIT(6)
#define PS8822_REG_DEV_ID1 0x06
#define PS8822_REG_DEV_ID2 0x07
#define PS8822_REG_DEV_ID3 0x08
#define PS8822_REG_DEV_ID4 0x09
#define PS8822_REG_DEV_ID5 0x0A
#define PS8822_REG_DEV_ID6 0x0B
#define PS8822_ID_LEN 6
#define PS8822_REG_PAGE1 0x01
#define PS8822_REG_DP_EQ 0xB6
#define PS8822_DP_EQ_AUTO_EN BIT(7)
#define PS8822_DPEQ_LEVEL_UP_9DB 0x00
#define PS8822_DPEQ_LEVEL_UP_11DB 0x01
#define PS8822_DPEQ_LEVEL_UP_12DB 0x02
#define PS8822_DPEQ_LEVEL_UP_14DB 0x03
#define PS8822_DPEQ_LEVEL_UP_17DB 0x04
#define PS8822_DPEQ_LEVEL_UP_18DB 0x05
#define PS8822_DPEQ_LEVEL_UP_19DB 0x06
#define PS8822_DPEQ_LEVEL_UP_20DB 0x07
#define PS8822_DPEQ_LEVEL_UP_21DB 0x08
#define PS8822_DPEQ_LEVEL_UP_MASK 0x0F
#define PS8822_REG_DP_EQ_SHIFT 3
/**
* Set DP Rx Equalization value
*
* @param *me pointer to usb_mux descriptor
* @param db requested gain setting for DP Rx path
* @return EC_SUCCESS if db param is valid and I2C is successful
*/
int ps8822_set_dp_rx_eq(const struct usb_mux *me, int db);
#endif /* __CROS_EC_PS8822_H */
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