4  * SPDX-License-Identifier: Apache-2.0
9 #include <zephyr/drivers/dac.h>
11 #include <zephyr/dt-bindings/dac/dacx0508.h>
36 	uint8_t reference;  member
47 	const struct dacx0508_config *config = dev->config;  in dacx0508_reg_read()
71 		return -EWOULDBLOCK;  in dacx0508_reg_read()
76 	ret = spi_write_dt(&config->bus, &tx);  in dacx0508_reg_read()
81 	ret = spi_read_dt(&config->bus, &rx);  in dacx0508_reg_read()
87 		return -EIO;  in dacx0508_reg_read()
96 	const struct dacx0508_config *config = dev->config;  in dacx0508_reg_write()
114 		return -EWOULDBLOCK;  in dacx0508_reg_write()
117 	return spi_write_dt(&config->bus, &tx);  in dacx0508_reg_write()
153 	const struct dacx0508_config *config = dev->config;  in dacx0508_channel_setup()
154 	struct dacx0508_data *data = dev->data;  in dacx0508_channel_setup()
156 	if (channel_cfg->channel_id > DACX0508_MAX_CHANNEL - 1) {  in dacx0508_channel_setup()
157 		LOG_ERR("Unsupported channel %d", channel_cfg->channel_id);  in dacx0508_channel_setup()
158 		return -ENOTSUP;  in dacx0508_channel_setup()
161 	if (channel_cfg->resolution != config->resolution) {  in dacx0508_channel_setup()
162 		LOG_ERR("Unsupported resolution %d", channel_cfg->resolution);  in dacx0508_channel_setup()
163 		return -ENOTSUP;  in dacx0508_channel_setup()
166 	if (channel_cfg->internal) {  in dacx0508_channel_setup()
168 		return -ENOTSUP;  in dacx0508_channel_setup()
171 	data->configured |= BIT(channel_cfg->channel_id);  in dacx0508_channel_setup()
179 	const struct dacx0508_config *config = dev->config;  in dacx0508_write_value()
180 	struct dacx0508_data *data = dev->data;  in dacx0508_write_value()
184 	if (channel > DACX0508_MAX_CHANNEL - 1) {  in dacx0508_write_value()
186 		return -ENOTSUP;  in dacx0508_write_value()
189 	if (!(data->configured & BIT(channel))) {  in dacx0508_write_value()
191 		return -EINVAL;  in dacx0508_write_value()
194 	if (value >= (1 << config->resolution)) {  in dacx0508_write_value()
196 		return -EINVAL;  in dacx0508_write_value()
199 	value <<= (16 - config->resolution);  in dacx0508_write_value()
205 		return -EIO;  in dacx0508_write_value()
218 		return -EIO;  in dacx0508_soft_reset()
227 	const struct dacx0508_config *config = dev->config;  in dacx0508_device_id_check()
236 		return -EIO;  in dacx0508_device_id_check()
241 	if (resolution != (16 - config->resolution) >> 1) {  in dacx0508_device_id_check()
243 		return -EINVAL;  in dacx0508_device_id_check()
249 		return -EINVAL;  in dacx0508_device_id_check()
257 	const struct dacx0508_config *config = dev->config;  in dacx0508_setup()
262 	switch (config->reference) {  in dacx0508_setup()
280 		LOG_ERR("unsupported channel reference type '%d'",  in dacx0508_setup()
281 			config->reference);  in dacx0508_setup()
282 		return -ENOTSUP;  in dacx0508_setup()
289 		return -EIO;  in dacx0508_setup()
296 		return -EIO;  in dacx0508_setup()
301 		tmp |= config->gain[i] << i;  in dacx0508_setup()
307 		return -EIO;  in dacx0508_setup()
314 		return -EIO;  in dacx0508_setup()
320 		return -EIO;  in dacx0508_setup()
326 		return -EIO;  in dacx0508_setup()
334 	const struct dacx0508_config *config = dev->config;  in dacx0508_init()
335 	struct dacx0508_data *data = dev->data;  in dacx0508_init()
338 	if (!spi_is_ready_dt(&config->bus)) {  in dacx0508_init()
339 		LOG_ERR("SPI bus %s not ready", config->bus.bus->name);  in dacx0508_init()
340 		return -ENODEV;  in dacx0508_init()
345 		LOG_ERR("Soft-reset failed");  in dacx0508_init()
359 	data->configured = 0;  in dacx0508_init()
364 static DEVICE_API(dac, dacx0508_driver_api) = {
372 	static struct dacx0508_data dac##t##_data_##n; \
373 	static const struct dacx0508_config dac##t##_config_##n = { \
378 		.reference = DT_PROP(INST_DT_DACX0508(n, t), \
391 			    &dac##t##_data_##n, \
392 			    &dac##t##_config_##n, POST_KERNEL, \
397  * DAC60508: 12-bit
402  * DAC70508: 14-bit
407  * DAC80508: 16-bit