| /* |
| * Copyright (c) 2017 Linaro Limited |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #ifndef ZEPHYR_DRIVERS_I2C_I2C_PRIV_H_ |
| #define ZEPHYR_DRIVERS_I2C_I2C_PRIV_H_ |
| |
| #include <zephyr/drivers/i2c.h> |
| #include <zephyr/dt-bindings/i2c/i2c.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /** |
| * @brief Map I2C bitrate from DT (in bps) to I2C interface encoding. |
| * |
| * @param bitrate I2C bitrate from DT (in bps) |
| * |
| * @retval bitrate I2C interface encoded bitrate. |
| * @retval 0 If given @p bitrate is not valid. |
| */ |
| static inline uint32_t i2c_map_dt_bitrate(uint32_t bitrate) |
| { |
| switch (bitrate) { |
| case I2C_BITRATE_STANDARD: |
| return I2C_SPEED_STANDARD << I2C_SPEED_SHIFT; |
| case I2C_BITRATE_FAST: |
| return I2C_SPEED_FAST << I2C_SPEED_SHIFT; |
| case I2C_BITRATE_FAST_PLUS: |
| return I2C_SPEED_FAST_PLUS << I2C_SPEED_SHIFT; |
| case I2C_BITRATE_HIGH: |
| return I2C_SPEED_HIGH << I2C_SPEED_SHIFT; |
| case I2C_BITRATE_ULTRA: |
| return I2C_SPEED_ULTRA << I2C_SPEED_SHIFT; |
| } |
| |
| return 0; |
| } |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* ZEPHYR_DRIVERS_I2C_I2C_PRIV_H_ */ |
