4  * SPDX-License-Identifier: Apache-2.0
9 #include <zephyr/drivers/adc.h>
34  * @brief RA ADC config
36  * This structure contains constant data for given instance of RA ADC.
50  * @brief RA ADC data
52  * This structure contains data structures used by a RA ADC.
57 	/** Pointer to RA ADC own device structure */
59 	/** Structure that handle fsp ADC */
60 	adc_instance_ctrl_t adc;  member
61 	/** Structure that handle fsp ADC config */
63 	/** Structure that handle fsp ADC channel config */
74  * @brief Setup channels before starting to scan ADC
76  * @param dev RA ADC device
80  * @return -ENOTSUP if channel id or differential is wrong value
81  * @return -EINVAL if channel configuration is invalid
86 	struct adc_ra_data *data = dev->data;  in adc_ra_channel_setup()
87 	const struct adc_ra_config *config = dev->config;  in adc_ra_channel_setup()  local
89 	if (!((config->channel_available_mask & (1 << channel_cfg->channel_id)) != 0)) {  in adc_ra_channel_setup()
90 		LOG_ERR("unsupported channel id '%d'", channel_cfg->channel_id);  in adc_ra_channel_setup()
91 		return -ENOTSUP;  in adc_ra_channel_setup()
94 	if (channel_cfg->acquisition_time != ADC_ACQ_TIME_DEFAULT) {  in adc_ra_channel_setup()
96 		return -EINVAL;  in adc_ra_channel_setup()
99 	if (channel_cfg->differential) {  in adc_ra_channel_setup()
101 		return -ENOTSUP;  in adc_ra_channel_setup()
104 	if (channel_cfg->gain != ADC_GAIN_1) {  in adc_ra_channel_setup()
106 		return -EINVAL;  in adc_ra_channel_setup()
109 	data->f_channel_cfg.scan_mask |= (1U << channel_cfg->channel_id);  in adc_ra_channel_setup()
110 	/* Configure ADC channel specific settings */  in adc_ra_channel_setup()
111 	fsp_err = R_ADC_ScanCfg(&data->adc, &data->f_channel_cfg);  in adc_ra_channel_setup()
113 		return -ENOTSUP;  in adc_ra_channel_setup()
124 	struct adc_ra_data *data = dev->data;  in adc_ra_isr()
128 	int16_t *sample_buffer = (int16_t *)data->buf;  in adc_ra_isr()
130 	channels = data->channels;  in adc_ra_isr()
134 			fsp_err = R_ADC_Read(&data->adc, channel_id, &sample_buffer[data->buf_id]);  in adc_ra_isr()
138 			data->buf_id = data->buf_id + 1;  in adc_ra_isr()
144 	adc_context_on_sampling_done(&data->ctx, dev);  in adc_ra_isr()
148  * @brief Check if buffer in @p sequence is big enough to hold all ADC samples
150  * @param dev RA ADC device
151  * @param sequence ADC sequence description
154  * @return -ENOMEM if buffer is not big enough
158 	const struct adc_ra_config *config = dev->config;  in adc_ra_check_buffer_size()  local
163 	for (mask = BIT(config->num_channels - 1); mask != 0; mask >>= 1) {  in adc_ra_check_buffer_size()
164 		if (mask & sequence->channels) {  in adc_ra_check_buffer_size()
170 	if (sequence->options) {  in adc_ra_check_buffer_size()
171 		needed *= (1 + sequence->options->extra_samplings);  in adc_ra_check_buffer_size()
174 	if (sequence->buffer_size < needed) {  in adc_ra_check_buffer_size()
175 		return -ENOMEM;  in adc_ra_check_buffer_size()
184  * @param dev RA ADC device
185  * @param sequence ADC sequence description
188  * @return -ENOTSUP if requested resolution or channel is out side of supported
190  * @return -ENOMEM if buffer is not big enough
196 	const struct adc_ra_config *config = dev->config;  in adc_ra_start_read()  local
197 	struct adc_ra_data *data = dev->data;  in adc_ra_start_read()
200 	if (sequence->resolution > ADC_RA_MAX_RESOLUTION || sequence->resolution == 0) {  in adc_ra_start_read()
201 		LOG_ERR("unsupported resolution %d", sequence->resolution);  in adc_ra_start_read()
202 		return -ENOTSUP;  in adc_ra_start_read()
205 	if (find_msb_set(sequence->channels) > config->num_channels) {  in adc_ra_start_read()
206 		LOG_ERR("unsupported channels in mask: 0x%08x", sequence->channels);  in adc_ra_start_read()
207 		return -ENOTSUP;  in adc_ra_start_read()
216 	data->buf_id = 0;  in adc_ra_start_read()
217 	data->buf = sequence->buffer;  in adc_ra_start_read()
218 	adc_context_start_read(&data->ctx, sequence);  in adc_ra_start_read()
220 	adc_context_wait_for_completion(&data->ctx);  in adc_ra_start_read()
228  * @param dev RA ADC device
229  * @param sequence ADC sequence description
233  * @return -ENOTSUP if requested resolution or channel is out side of supported
235  * @return -ENOMEM if buffer is not big enough
242 	struct adc_ra_data *data = dev->data;  in adc_ra_read_async()
245 	adc_context_lock(&data->ctx, async ? true : false, async);  in adc_ra_read_async()
247 	adc_context_release(&data->ctx, err);  in adc_ra_read_async()
255  * @param dev RA ADC device
256  * @param sequence ADC sequence description
259  * @return -ENOTSUP if requested resolution or channel is out side of supported
261  * @return -ENOMEM if buffer is not big enough
274 	data->channels = ctx->sequence.channels;  in adc_context_start_sampling()
276 	R_ADC_ScanStart(&data->adc);  in adc_context_start_sampling()
284 		data->buf_id = 0;  in adc_context_update_buffer_pointer()
289  * @brief Function called on init for each RA ADC device. It setups all
292  * @param dev RA ADC device
294  * @return -EIO if error
300 	const struct adc_ra_config *config = dev->config;  in adc_ra_init()  local
301 	struct adc_ra_data *data = dev->data;  in adc_ra_init()
305 	ret = pinctrl_apply_state(config->pcfg, PINCTRL_STATE_DEFAULT);  in adc_ra_init()
310 	/* Open ADC module */  in adc_ra_init()
311 	fsp_err = R_ADC_Open(&data->adc, &data->f_config);  in adc_ra_init()
313 		return -EIO;  in adc_ra_init()
316 	config->irq_configure();  in adc_ra_init()
318 	adc_context_unlock_unconditionally(&data->ctx);  in adc_ra_init()
325 		R_ICU->IELSR[DT_INST_IRQ_BY_NAME(idx, scanend, irq)] =                             \
351 	static DEVICE_API(adc, adc_ra_api_##idx) = {                                               \