1 /* 2 * Copyright (c) 2024, Croxel Inc 3 * Copyright (c) 2024, Embeint Inc 4 * 5 * SPDX-License-Identifier: Apache-2.0 6 */ 7 8 #ifndef ZEPHYR_DRIVERS_I2C_I2C_NRFX_TWIM_COMMON_H_ 9 #define ZEPHYR_DRIVERS_I2C_I2C_NRFX_TWIM_COMMON_H_ 10 11 #include <zephyr/device.h> 12 #include <zephyr/pm/device.h> 13 #include <nrfx_twim.h> 14 15 #ifdef __cplusplus 16 extern "C" { 17 #endif 18 19 #define I2C_NRFX_TWIM_INVALID_FREQUENCY ((nrf_twim_frequency_t)-1) 20 #define I2C_NRFX_TWIM_FREQUENCY(bitrate) \ 21 (bitrate == I2C_BITRATE_STANDARD ? NRF_TWIM_FREQ_100K \ 22 : bitrate == 250000 ? NRF_TWIM_FREQ_250K \ 23 : bitrate == I2C_BITRATE_FAST \ 24 ? NRF_TWIM_FREQ_400K \ 25 : IF_ENABLED(NRF_TWIM_HAS_1000_KHZ_FREQ, \ 26 (bitrate == I2C_BITRATE_FAST_PLUS ? NRF_TWIM_FREQ_1000K :)) \ 27 I2C_NRFX_TWIM_INVALID_FREQUENCY) 28 29 #define I2C(idx) DT_NODELABEL(i2c##idx) 30 #define I2C_HAS_PROP(idx, prop) DT_NODE_HAS_PROP(I2C(idx), prop) 31 #define I2C_FREQUENCY(idx) I2C_NRFX_TWIM_FREQUENCY(DT_PROP_OR(I2C(idx), clock_frequency, \ 32 I2C_BITRATE_STANDARD)) 33 34 struct i2c_nrfx_twim_common_config { 35 nrfx_twim_t twim; 36 nrfx_twim_config_t twim_config; 37 nrfx_twim_evt_handler_t event_handler; 38 uint16_t msg_buf_size; 39 void (*irq_connect)(void); 40 const struct pinctrl_dev_config *pcfg; 41 uint8_t *msg_buf; 42 uint16_t max_transfer_size; 43 }; 44 45 int i2c_nrfx_twim_common_init(const struct device *dev); 46 int i2c_nrfx_twim_configure(const struct device *dev, uint32_t i2c_config); 47 int i2c_nrfx_twim_recover_bus(const struct device *dev); 48 int i2c_nrfx_twim_msg_transfer(const struct device *dev, uint8_t flags, uint8_t *buf, 49 size_t buf_len, uint16_t i2c_addr); 50 51 #ifdef CONFIG_PM_DEVICE 52 int twim_nrfx_pm_action(const struct device *dev, enum pm_device_action action); 53 #endif 54 55 #ifdef __cplusplus 56 } 57 #endif 58 59 #endif /* ZEPHYR_DRIVERS_I2C_I2C_NRFX_TWIM_COMMON_H_ */ 60
