4  * SPDX-License-Identifier: Apache-2.0
57 	uint32_t bitrate;  member
67 	struct i2c_ra_iic_data *data = (struct i2c_ra_iic_data *const)dev->data;  in i2c_ra_iic_configure()  local
71 		return -EIO;  in i2c_ra_iic_configure()
76 		data->fsp_config.rate = I2C_MASTER_RATE_STANDARD;  in i2c_ra_iic_configure()
79 		data->fsp_config.rate = I2C_MASTER_RATE_FAST;  in i2c_ra_iic_configure()
82 		data->fsp_config.rate = I2C_MASTER_RATE_FASTPLUS;  in i2c_ra_iic_configure()
86 		return -EIO;  in i2c_ra_iic_configure()
90 	calc_iic_master_clock_setting(dev, data->fsp_config.rate,  in i2c_ra_iic_configure()
91 				      &data->iic_master_ext_cfg.clock_settings);  in i2c_ra_iic_configure()
93 	R_IIC_MASTER_Close(&data->ctrl);  in i2c_ra_iic_configure()
94 	R_IIC_MASTER_Open(&data->ctrl, &data->fsp_config);  in i2c_ra_iic_configure()
97 	data->dev_config = dev_config;  in i2c_ra_iic_configure()
104 	struct i2c_ra_iic_data *data = (struct i2c_ra_iic_data *const)dev->data;  in i2c_ra_iic_get_config()  local
105 	*dev_config = data->dev_config;  in i2c_ra_iic_get_config()
110 #define OPERATION(msg) (((struct i2c_msg *)msg)->flags & I2C_MSG_RW_MASK)
115 	struct i2c_ra_iic_data *data = (struct i2c_ra_iic_data *const)dev->data;  in i2c_ra_iic_transfer()  local
131 	current->flags |= I2C_MSG_RESTART;  in i2c_ra_iic_transfer()
142 				if (!(next->flags & I2C_MSG_RESTART)) {  in i2c_ra_iic_transfer()
147 					ret = -EIO;  in i2c_ra_iic_transfer()
153 			if (current->flags & I2C_MSG_STOP) {  in i2c_ra_iic_transfer()
158 				ret = -EIO;  in i2c_ra_iic_transfer()
162 			current->flags |= I2C_MSG_STOP;  in i2c_ra_iic_transfer()
172 	k_mutex_lock(&data->bus_mutex, K_FOREVER);  in i2c_ra_iic_transfer()
178 	if (I2C_MSG_ADDR_10_BITS & data->dev_config) {  in i2c_ra_iic_transfer()
184 	R_IIC_MASTER_SlaveAddressSet(&data->ctrl, addr, addr_mode);  in i2c_ra_iic_transfer()
197 		if (current->flags & I2C_MSG_READ) {  in i2c_ra_iic_transfer()
199 				R_IIC_MASTER_Read(&data->ctrl, current->buf, current->len,  in i2c_ra_iic_transfer()
200 						  next != NULL && (next->flags & I2C_MSG_RESTART));  in i2c_ra_iic_transfer()
203 				R_IIC_MASTER_Write(&data->ctrl, current->buf, current->len,  in i2c_ra_iic_transfer()
204 						   next != NULL && (next->flags & I2C_MSG_RESTART));  in i2c_ra_iic_transfer()
211 					"(65535) while DTC is used for data transfer.",  in i2c_ra_iic_transfer()
224 			ret = -EIO;  in i2c_ra_iic_transfer()
229 		k_sem_take(&data->complete_sem, K_FOREVER);  in i2c_ra_iic_transfer()
232 		switch (data->event) {  in i2c_ra_iic_transfer()
235 				(current->flags & I2C_MSG_READ) ? "Read" : "Write");  in i2c_ra_iic_transfer()
236 			ret = -EIO;  in i2c_ra_iic_transfer()
247 		num_msgs--;  in i2c_ra_iic_transfer()
251 	k_mutex_unlock(&data->bus_mutex);  in i2c_ra_iic_transfer()
258 	const struct device *dev = p_args->p_context;  in i2c_ra_iic_callback()
259 	struct i2c_ra_iic_data *data = dev->data;  in i2c_ra_iic_callback()  local
261 	data->event = p_args->event;  in i2c_ra_iic_callback()
263 	k_sem_give(&data->complete_sem);  in i2c_ra_iic_callback()
268 	const struct i2c_ra_iic_config *config = dev->config;  in i2c_ra_iic_init()
269 	struct i2c_ra_iic_data *data = (struct i2c_ra_iic_data *)dev->data;  in i2c_ra_iic_init()  local
274 	ret = pinctrl_apply_state(config->pcfg, PINCTRL_STATE_DEFAULT);  in i2c_ra_iic_init()
281 	k_mutex_init(&data->bus_mutex);  in i2c_ra_iic_init()
282 	k_sem_init(&data->complete_sem, 0, 1);  in i2c_ra_iic_init()
284 	switch (data->fsp_config.rate) {  in i2c_ra_iic_init()
288 		calc_iic_master_clock_setting(dev, data->fsp_config.rate,  in i2c_ra_iic_init()
289 					      &data->iic_master_ext_cfg.clock_settings);  in i2c_ra_iic_init()
290 		data->iic_master_ext_cfg.timeout_mode = IIC_MASTER_TIMEOUT_MODE_SHORT;  in i2c_ra_iic_init()
291 		data->iic_master_ext_cfg.timeout_scl_low = IIC_MASTER_TIMEOUT_SCL_LOW_ENABLED;  in i2c_ra_iic_init()
293 		data->fsp_config.p_extend = &data->iic_master_ext_cfg;  in i2c_ra_iic_init()
296 		LOG_ERR("%s: Invalid I2C speed rate: %d", __func__, data->fsp_config.rate);  in i2c_ra_iic_init()
297 		return -ENOTSUP;  in i2c_ra_iic_init()
300 	fsp_err = R_IIC_MASTER_Open(&data->ctrl, &data->fsp_config);  in i2c_ra_iic_init()
304 	config->irq_config_func(dev);  in i2c_ra_iic_init()
313 	const uint32_t noise_filter_stage = config->noise_filter_stage;  in calc_iic_master_bitrate()
314 	const double rise_time_s = config->rise_time_s;  in calc_iic_master_bitrate()
315 	const double fall_time_s = config->fall_time_s;  in calc_iic_master_bitrate()
316 	const uint32_t requested_duty = config->duty_cycle_percent;  in calc_iic_master_bitrate()
330 	/* Converts all divided numbers to double to avoid data loss. */  in calc_iic_master_bitrate()
333 	result->bitrate =  in calc_iic_master_bitrate()
335 	result->duty =  in calc_iic_master_bitrate()
339 	result->divider = divider;  in calc_iic_master_bitrate()
340 	result->brh = brh;  in calc_iic_master_bitrate()
341 	result->brl = total_brl_brh - brh;  in calc_iic_master_bitrate()
342 	result->duty_error_percent =  in calc_iic_master_bitrate()
343 		(result->duty > requested_duty ? result->duty - requested_duty  in calc_iic_master_bitrate()
344 					       : requested_duty - result->duty) /  in calc_iic_master_bitrate()
348 		" [output] bitrate[%u] duty[%u] divider[%u] brh[%u] brl[%u] "  in calc_iic_master_bitrate()
350 		__func__, total_brl_brh, brh, divider, result->bitrate, result->duty,  in calc_iic_master_bitrate()
351 		result->divider, result->brh, result->brl, result->duty_error_percent);  in calc_iic_master_bitrate()
357 	const struct i2c_ra_iic_config *config = dev->config;  in calc_iic_master_clock_setting()
358 	const uint32_t noise_filter_stage = config->noise_filter_stage;  in calc_iic_master_clock_setting()
359 	const double rise_time_s = config->rise_time_s;  in calc_iic_master_clock_setting()
360 	const double fall_time_s = config->fall_time_s;  in calc_iic_master_clock_setting()
361 	const uint32_t requested_duty = config->duty_cycle_percent;  in calc_iic_master_clock_setting()
377 	/* Start with maximum possible bitrate. */  in calc_iic_master_clock_setting()
380 	struct ra_iic_master_bitrate bitrate = {};  in calc_iic_master_clock_setting()  local
382 	calc_iic_master_bitrate(config, min_brl_brh, min_brh, 0, &bitrate);  in calc_iic_master_clock_setting()
394 		/* If the requested bitrate cannot be achieved with this divider, continue.  in calc_iic_master_clock_setting()
398 			ceil(((1 / (double)requested_bitrate) - (rise_time_s + fall_time_s)) *  in calc_iic_master_clock_setting()
399 				     divided_pclk -  in calc_iic_master_clock_setting()
412 		/* Calculate the actual bitrate and duty cycle. */  in calc_iic_master_clock_setting()
422 			temp_brh -= 1;  in calc_iic_master_clock_setting()
424 			if ((temp_brh < min_brh) || ((total_brl_brh - temp_brh) > 31)) {  in calc_iic_master_clock_setting()
445 			    ((total_brl_brh - temp_brh) < min_brh)) {  in calc_iic_master_clock_setting()
463 			bitrate = temp_bitrate;  in calc_iic_master_clock_setting()
468 	clk_cfg->brl_value = bitrate.brl;  in calc_iic_master_clock_setting()
469 	clk_cfg->brh_value = bitrate.brh;  in calc_iic_master_clock_setting()
470 	clk_cfg->cks_value = bitrate.divider;  in calc_iic_master_clock_setting()
473 		clk_cfg->brl_value, clk_cfg->brh_value, clk_cfg->cks_value);  in calc_iic_master_clock_setting()
498 		R_ICU->IELSR[DT_INST_IRQ_BY_NAME(index, rxi, irq)] =                               \
500 		R_ICU->IELSR[DT_INST_IRQ_BY_NAME(index, txi, irq)] =                               \
502 		R_ICU->IELSR[DT_INST_IRQ_BY_NAME(index, tei, irq)] =                               \
504 		R_ICU->IELSR[DT_INST_IRQ_BY_NAME(index, eri, irq)] =                               \