blob: 9e75f2f33502ae6a580109027b53a461ed952f09 [file] [log] [blame]
/*
* Copyright (c) 2016 BayLibre, SAS
* Copyright (c) 2017 Linaro Ltd
*
* SPDX-License-Identifier: Apache-2.0
*
*/
#ifndef _STM32_I2C_H_
#define _STM32_I2C_H_
typedef void (*irq_config_func_t)(struct device *port);
struct i2c_stm32_config {
#ifdef CONFIG_I2C_STM32_INTERRUPT
irq_config_func_t irq_config_func;
#endif
struct stm32_pclken pclken;
I2C_TypeDef *i2c;
u32_t bitrate;
};
struct i2c_stm32_data {
#ifdef CONFIG_I2C_STM32_INTERRUPT
struct k_sem device_sync_sem;
#endif
u32_t dev_config;
#ifdef CONFIG_I2C_STM32_V1
u16_t slave_address;
#endif
struct {
#ifdef CONFIG_I2C_STM32_V1
unsigned int is_restart;
unsigned int flags;
#endif
unsigned int is_write;
unsigned int is_nack;
unsigned int is_err;
struct i2c_msg *msg;
unsigned int len;
u8_t *buf;
} current;
};
s32_t stm32_i2c_msg_write(struct device *dev, struct i2c_msg *msg, u32_t flg,
u16_t sadr);
s32_t stm32_i2c_msg_read(struct device *dev, struct i2c_msg *msg, u32_t flg,
u16_t sadr);
s32_t stm32_i2c_configure_timing(struct device *dev, u32_t clk);
void stm32_i2c_event_isr(void *arg);
void stm32_i2c_error_isr(void *arg);
#define DEV_DATA(dev) ((struct i2c_stm32_data * const)(dev)->driver_data)
#define DEV_CFG(dev) \
((const struct i2c_stm32_config * const)(dev)->config->config_info)
#endif /* _STM32_I2C_H_ */