5  * SPDX-License-Identifier: Apache-2.0
107 	const struct ads1119_config *config = dev->config;  in ads1119_read_reg()
109 	return i2c_reg_read_byte_dt(&config->bus, ADS1119_CMD_READ_REG | reg_addr, reg_val);  in ads1119_read_reg()
112 static int ads1119_write_reg(const struct device *dev, uint8_t reg)  in ads1119_write_reg()  argument
114 	const struct ads1119_config *config = dev->config;  in ads1119_write_reg()
116 	return i2c_reg_write_byte_dt(&config->bus, ADS1119_CMD_WRITE_REG, reg);  in ads1119_write_reg()
122 	struct ads1119_data *data = dev->data;  in ads1119_acq_time_to_dr()
123 	int odr = -EINVAL;  in ads1119_acq_time_to_dr()
130 		return -EINVAL;  in ads1119_acq_time_to_dr()
157 	data->ready_time = K_USEC(ready_time_us + 10);  in ads1119_acq_time_to_dr()
164 	const struct ads1119_config *config = dev->config;  in ads1119_send_start_read()
167 	return i2c_write_dt(&config->bus, &cmd, sizeof(cmd));  in ads1119_send_start_read()
172 	int rc;  in ads1119_wait_data_ready()  local
173 	struct ads1119_data *data = dev->data;  in ads1119_wait_data_ready()
175 	k_sleep(data->ready_time);  in ads1119_wait_data_ready()
178 	rc = ads1119_read_reg(dev, ADS1119_REG_STATUS, &status);  in ads1119_wait_data_ready()
179 	if (rc != 0) {  in ads1119_wait_data_ready()
180 		return rc;  in ads1119_wait_data_ready()
186 		rc = ads1119_read_reg(dev, ADS1119_REG_STATUS, &status);  in ads1119_wait_data_ready()
187 		if (rc != 0) {  in ads1119_wait_data_ready()
188 			return rc;  in ads1119_wait_data_ready()
199 	const struct ads1119_config *config = dev->config;  in ads1119_read_sample()
202 	res = i2c_write_read_dt(&config->bus,  in ads1119_read_sample()
213 	struct ads1119_data *data = dev->data;  in ads1119_channel_setup()
217 	if (channel_cfg->channel_id != 0) {  in ads1119_channel_setup()
218 		return -EINVAL;  in ads1119_channel_setup()
221 	switch (channel_cfg->reference) {  in ads1119_channel_setup()
229 		return -EINVAL;  in ads1119_channel_setup()
232 	if (channel_cfg->differential) {  in ads1119_channel_setup()
233 		if (channel_cfg->input_positive == 0 && channel_cfg->input_negative == 1) {  in ads1119_channel_setup()
235 		} else if (channel_cfg->input_positive == 1 && channel_cfg->input_negative == 2) {  in ads1119_channel_setup()
237 		} else if (channel_cfg->input_positive == 2 && channel_cfg->input_negative == 3) {  in ads1119_channel_setup()
240 			return -EINVAL;  in ads1119_channel_setup()
243 		if (channel_cfg->input_positive == 0) {  in ads1119_channel_setup()
245 		} else if (channel_cfg->input_positive == 1) {  in ads1119_channel_setup()
247 		} else if (channel_cfg->input_positive == 2) {  in ads1119_channel_setup()
249 		} else if (channel_cfg->input_positive == 3) {  in ads1119_channel_setup()
252 			return -EINVAL;  in ads1119_channel_setup()
255 	data->differential = channel_cfg->differential;  in ads1119_channel_setup()
257 	dr = ads1119_acq_time_to_dr(dev, channel_cfg->acquisition_time);  in ads1119_channel_setup()
264 	switch (channel_cfg->gain) {  in ads1119_channel_setup()
272 		return -EINVAL;  in ads1119_channel_setup()
285 	if (sequence->options) {  in ads1119_validate_buffer_size()
286 		needed *= (1 + sequence->options->extra_samplings);  in ads1119_validate_buffer_size()
289 	if (sequence->buffer_size < needed) {  in ads1119_validate_buffer_size()
290 		return -ENOMEM;  in ads1119_validate_buffer_size()
298 	const struct ads1119_data *data = dev->data;  in ads1119_validate_sequence()
299 	const uint8_t resolution = data->differential ? ADS1119_RESOLUTION : ADS1119_RESOLUTION - 1;  in ads1119_validate_sequence()
301 	if (sequence->resolution != resolution) {  in ads1119_validate_sequence()
302 		return -EINVAL;  in ads1119_validate_sequence()
305 	if (sequence->channels != BIT(0)) {  in ads1119_validate_sequence()
306 		return -EINVAL;  in ads1119_validate_sequence()
309 	if (sequence->oversampling) {  in ads1119_validate_sequence()
310 		return -EINVAL;  in ads1119_validate_sequence()
324 		data->buffer = data->buffer_ptr;  in adc_context_update_buffer_pointer()
333 	data->buffer_ptr = data->buffer;  in adc_context_start_sampling()
334 	k_sem_give(&data->acq_sem);  in adc_context_start_sampling()
341 	int rc;  in ads1119_adc_start_read()  local
342 	struct ads1119_data *data = dev->data;  in ads1119_adc_start_read()
344 	rc = ads1119_validate_sequence(dev, sequence);  in ads1119_adc_start_read()
345 	if (rc != 0) {  in ads1119_adc_start_read()
346 		return rc;  in ads1119_adc_start_read()
349 	data->buffer = sequence->buffer;  in ads1119_adc_start_read()
351 	adc_context_start_read(&data->ctx, sequence);  in ads1119_adc_start_read()
354 		rc = adc_context_wait_for_completion(&data->ctx);  in ads1119_adc_start_read()
356 	return rc;  in ads1119_adc_start_read()
361 	int rc;  in ads1119_adc_perform_read()  local
362 	struct ads1119_data *data = dev->data;  in ads1119_adc_perform_read()
364 	k_sem_take(&data->acq_sem, K_FOREVER);  in ads1119_adc_perform_read()
366 	rc = ads1119_send_start_read(dev);  in ads1119_adc_perform_read()
367 	if (rc) {  in ads1119_adc_perform_read()
368 		adc_context_complete(&data->ctx, rc);  in ads1119_adc_perform_read()
369 		return rc;  in ads1119_adc_perform_read()
372 	rc = ads1119_wait_data_ready(dev);  in ads1119_adc_perform_read()
373 	if (rc != 0) {  in ads1119_adc_perform_read()
374 		adc_context_complete(&data->ctx, rc);  in ads1119_adc_perform_read()
375 		return rc;  in ads1119_adc_perform_read()
378 	rc = ads1119_read_sample(dev, data->buffer);  in ads1119_adc_perform_read()
379 	if (rc != 0) {  in ads1119_adc_perform_read()
380 		adc_context_complete(&data->ctx, rc);  in ads1119_adc_perform_read()
381 		return rc;  in ads1119_adc_perform_read()
383 	data->buffer++;  in ads1119_adc_perform_read()
385 	adc_context_on_sampling_done(&data->ctx, dev);  in ads1119_adc_perform_read()
387 	return rc;  in ads1119_adc_perform_read()
395 	int rc;  in ads1119_adc_read_async()  local
396 	struct ads1119_data *data = dev->data;  in ads1119_adc_read_async()
398 	adc_context_lock(&data->ctx, true, async);  in ads1119_adc_read_async()
399 	rc = ads1119_adc_start_read(dev, sequence, true);  in ads1119_adc_read_async()
400 	adc_context_release(&data->ctx, rc);  in ads1119_adc_read_async()
402 	return rc;  in ads1119_adc_read_async()
407 	int rc;  in ads1119_read()  local
408 	struct ads1119_data *data = dev->data;  in ads1119_read()
410 	adc_context_lock(&data->ctx, false, NULL);  in ads1119_read()
411 	rc = ads1119_adc_start_read(dev, sequence, true);  in ads1119_read()
412 	adc_context_release(&data->ctx, rc);  in ads1119_read()
414 	return rc;  in ads1119_read()
420 	int rc;  in ads1119_read()  local
421 	struct ads1119_data *data = dev->data;  in ads1119_read()
423 	adc_context_lock(&data->ctx, false, NULL);  in ads1119_read()
424 	rc = ads1119_adc_start_read(dev, sequence, false);  in ads1119_read()
426 	while (rc == 0 && k_sem_take(&data->ctx.sync, K_NO_WAIT) != 0) {  in ads1119_read()
427 		rc = ads1119_adc_perform_read(dev);  in ads1119_read()
430 	adc_context_release(&data->ctx, rc);  in ads1119_read()
431 	return rc;  in ads1119_read()
450 	int rc;  in ads1119_init()  local
452 	const struct ads1119_config *config = dev->config;  in ads1119_init()
453 	struct ads1119_data *data = dev->data;  in ads1119_init()
455 	adc_context_init(&data->ctx);  in ads1119_init()
457 	k_sem_init(&data->acq_sem, 0, 1);  in ads1119_init()
459 	if (!device_is_ready(config->bus.bus)) {  in ads1119_init()
460 		return -ENODEV;  in ads1119_init()
463 	rc = ads1119_read_reg(dev, ADS1119_REG_STATUS, &status);  in ads1119_init()
464 	if (rc) {  in ads1119_init()
465 		LOG_ERR("Could not get %s status", dev->name);  in ads1119_init()
466 		return rc;  in ads1119_init()
471 		k_thread_create(&data->thread, config->stack,  in ads1119_init()
479 	adc_context_unlock_unconditionally(&data->ctx);  in ads1119_init()
481 	return rc;  in ads1119_init()