4  * SPDX-License-Identifier: Apache-2.0
10 #include <zephyr/dt-bindings/adc/nrf-saadc-v3.h>
11 #include <zephyr/dt-bindings/adc/nrf-saadc-nrf54l.h>
68 	     "Definitions from nrf-adc.h do not match those from nrf_saadc.h");
112 	if (NRF_SAADC_8BIT_SAMPLE_WIDTH == 8 && sequence->resolution == 8) {  in samples_to_bytes()
147 		result = -EINVAL;  in adc_convert_acq_time()
162 	tacq = (nrf_saadc_acqtime_t)(acq_time / MINIMUM_ACQ_TIME_IN_NS) - 1;  in adc_convert_acq_time()
164 		result = -EINVAL;  in adc_convert_acq_time()
190 	return -ENOTSUP;  in saadc_pm_hook()
204 	uint8_t channel_id = channel_cfg->channel_id;  in adc_nrfx_channel_setup()
205 	uint32_t input_negative = channel_cfg->input_negative;  in adc_nrfx_channel_setup()
208 		return -EINVAL;  in adc_nrfx_channel_setup()
211 	switch (channel_cfg->gain) {  in adc_nrfx_channel_setup()
265 		return -EINVAL;  in adc_nrfx_channel_setup()
268 	switch (channel_cfg->reference) {  in adc_nrfx_channel_setup()
286 		return -EINVAL;  in adc_nrfx_channel_setup()
289 	int ret = adc_convert_acq_time(channel_cfg->acquisition_time, &config.acq_time);  in adc_nrfx_channel_setup()
293 		return -EINVAL;  in adc_nrfx_channel_setup()
296 	/* Store channel mode to allow correcting negative readings in single-ended mode  in adc_nrfx_channel_setup()
299 	if (channel_cfg->differential) {  in adc_nrfx_channel_setup()
301 		m_data.single_ended_channels &= ~BIT(channel_cfg->channel_id);  in adc_nrfx_channel_setup()
304 		m_data.single_ended_channels |= BIT(channel_cfg->channel_id);  in adc_nrfx_channel_setup()
308 	if ((channel_cfg->input_positive >= ARRAY_SIZE(saadc_psels)) ||  in adc_nrfx_channel_setup()
309 	    (channel_cfg->input_positive < NRF_SAADC_AIN0)) {  in adc_nrfx_channel_setup()
310 		return -EINVAL;  in adc_nrfx_channel_setup()
316 			return -EINVAL;  in adc_nrfx_channel_setup()
328 	m_data.positive_inputs[channel_id] = channel_cfg->input_positive;  in adc_nrfx_channel_setup()
351 	if (ctx->sequence.calibrate) {  in adc_context_start_sampling()
368 			samples_to_bytes(&ctx->sequence, nrfy_saadc_amount_get(NRF_SAADC));  in adc_context_update_buffer_pointer()
372 			samples_to_bytes(&ctx->sequence, nrfy_saadc_amount_get(NRF_SAADC));  in adc_context_update_buffer_pointer()
382 	switch (sequence->resolution) {  in set_resolution()
397 			    sequence->resolution);  in set_resolution()
398 		return -EINVAL;  in set_resolution()
410 	if ((active_channels > 1) && (sequence->oversampling > 0)) {  in set_oversampling()
412 			"Oversampling is supported for single channel only");  in set_oversampling()
413 		return -EINVAL;  in set_oversampling()
416 	switch (sequence->oversampling) {  in set_oversampling()
446 			    sequence->oversampling);  in set_oversampling()
447 		return -EINVAL;  in set_oversampling()
461 	if (sequence->options) {  in check_buffer_size()
462 		needed_buffer_size *= (1 + sequence->options->extra_samplings);  in check_buffer_size()
465 	if (sequence->buffer_size < needed_buffer_size) {  in check_buffer_size()
467 			    sequence->buffer_size, needed_buffer_size);  in check_buffer_size()
468 		return -ENOMEM;  in check_buffer_size()
476 	return sequence->channels & m_data.single_ended_channels;  in has_single_ended()
482 	uint8_t selected_channels = sequence->channels;  in correct_single_ended()
503 	uint32_t selected_channels = sequence->channels;  in start_read()
504 	uint8_t resolution = sequence->resolution;  in start_read()
509 	 * a non-existing one is selected).  in start_read()
514 		return -EINVAL;  in start_read()
531 				return -EINVAL;  in start_read()
534 			 * single ended with a resolution which is identical  in start_read()
535 			 * to the sample bit size. The SAADC's "single ended"  in start_read()
541 			 * correct them to 0 after the sequencen has ended.  in start_read()
545 				LOG_ERR("Channel %u invalid single ended resolution",  in start_read()
547 				return -EINVAL;  in start_read()
553 			 * event is not generated) after switching to a single  in start_read()
559 				(sequence->oversampling != 0U ?  in start_read()
600 	m_data.user_buffer = sequence->buffer;  in start_read()
608 			      (nrf_saadc_value_t *)sequence->buffer,  in start_read()