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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.
*/
/*
* Private chipset-specific implementations that only accessible by
* i2c_master.c. Don't include this directly unless you are implementing
* these functions.
*/
#ifndef __CROS_EC_I2C_PRIVATE_H
#define __CROS_EC_I2C_PRIVATE_H
#include "i2c.h"
/**
* Chip-level function to transmit one block of raw data, then receive one
* block of raw data.
*
* This is a low-level chip-dependent function and should only be called by
* i2c_xfer().
*
* @param port Port to access
* @param slave_addr Slave device address
* @param out Data to send
* @param out_size Number of bytes to send
* @param in Destination buffer for received data
* @param in_size Number of bytes to receive
* @param flags Flags (see I2C_XFER_* above)
* @return EC_SUCCESS, or non-zero if error.
*/
int chip_i2c_xfer(const int port,
const uint16_t slave_addr_flags,
const uint8_t *out, int out_size,
uint8_t *in, int in_size, int flags);
/**
* Chip level function to set bus speed.
*
* @param port: Port to access
* @param kbps: Bus speed in kbps.
*
* @return EC_SUCCESS, or non-zero if error.
*/
int chip_i2c_set_freq(int port, enum i2c_freq freq);
/**
* Chip level function to get bus speed.
*
* @param port: Port to access
*
* @return Bus speed
*/
enum i2c_freq chip_i2c_get_freq(int port);
#endif /* __CROS_EC_I2C_PRIVATE_H */
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