35 	int ret;  in scd4x_write_command()  local
39 	ret = i2c_write_dt(&cfg->bus, tx_buf, sizeof(tx_buf));  in scd4x_write_command()
45 	return ret;  in scd4x_write_command()
51 	int ret;  in scd4x_read_reg()  local
53 	ret = i2c_read_dt(&cfg->bus, rx_buf, rx_buf_size);  in scd4x_read_reg()
54 	if (ret < 0) {  in scd4x_read_reg()
56 		return ret;  in scd4x_read_reg()
60 		ret = scd4x_calc_crc(sys_get_be16(&rx_buf[i * 3]));  in scd4x_read_reg()
61 		if (ret != rx_buf[(i * 3) + 2]) {  in scd4x_read_reg()
73 	int ret;  in scd4x_write_reg()  local
86 	ret = i2c_write_dt(&cfg->bus, tx_buf, sizeof(tx_buf));  in scd4x_write_reg()
87 	if (ret < 0) {  in scd4x_write_reg()
89 		return ret;  in scd4x_write_reg()
101 	int ret;  in scd4x_data_ready()  local
104 	ret = scd4x_write_command(dev, SCD4X_CMD_GET_DATA_READY_STATUS);  in scd4x_data_ready()
105 	if (ret < 0) {  in scd4x_data_ready()
107 		return ret;  in scd4x_data_ready()
110 	ret = scd4x_read_reg(dev, rx_data, sizeof(rx_data));  in scd4x_data_ready()
111 	if (ret < 0) {  in scd4x_data_ready()
113 		return ret;  in scd4x_data_ready()
129 	int ret;  in scd4x_read_sample()  local
131 	ret = scd4x_write_command(dev, SCD4X_CMD_READ_MEASUREMENT);  in scd4x_read_sample()
132 	if (ret < 0) {  in scd4x_read_sample()
134 		return ret;  in scd4x_read_sample()
137 	ret = scd4x_read_reg(dev, rx_data, sizeof(rx_data));  in scd4x_read_sample()
138 	if (ret < 0) {  in scd4x_read_sample()
140 		return ret;  in scd4x_read_sample()
153 	int ret;  in scd4x_setup_measurement()  local
157 		ret = scd4x_write_command(dev, SCD4X_CMD_START_PERIODIC_MEASUREMENT);  in scd4x_setup_measurement()
158 		if (ret < 0) {  in scd4x_setup_measurement()
160 			return ret;  in scd4x_setup_measurement()
164 		ret = scd4x_write_command(dev, SCD4X_CMD_LOW_POWER_PERIODIC_MEASUREMENT);  in scd4x_setup_measurement()
165 		if (ret < 0) {  in scd4x_setup_measurement()
167 			return ret;  in scd4x_setup_measurement()
171 		ret = scd4x_write_command(dev, SCD4X_CMD_POWER_DOWN);  in scd4x_setup_measurement()
172 		if (ret < 0) {  in scd4x_setup_measurement()
174 			return ret;  in scd4x_setup_measurement()
186 	int ret;  in scd4x_set_idle_mode()  local
191 		ret = scd4x_write_command(dev, SCD4X_CMD_WAKE_UP);  in scd4x_set_idle_mode()
192 		if (ret < 0) {  in scd4x_set_idle_mode()
194 			return ret;  in scd4x_set_idle_mode()
197 		ret = scd4x_write_command(dev, SCD4X_CMD_STOP_PERIODIC_MEASUREMENT);  in scd4x_set_idle_mode()
198 		if (ret < 0) {  in scd4x_set_idle_mode()
200 			return ret;  in scd4x_set_idle_mode()
209 	int ret;  in scd4x_set_temperature_offset()  local
214 	ret = scd4x_write_reg(dev, SCD4X_CMD_SET_TEMPERATURE_OFFSET, &offset_temp, 1);  in scd4x_set_temperature_offset()
215 	if (ret < 0) {  in scd4x_set_temperature_offset()
217 		return ret;  in scd4x_set_temperature_offset()
225 	int ret;  in scd4x_set_sensor_altitude()  local
228 	ret = scd4x_write_reg(dev, SCD4X_CMD_SET_SENSOR_ALTITUDE, &altitude, 1);  in scd4x_set_sensor_altitude()
229 	if (ret < 0) {  in scd4x_set_sensor_altitude()
231 		return ret;  in scd4x_set_sensor_altitude()
238 	int ret;  in scd4x_set_ambient_pressure()  local
242 	ret = scd4x_write_reg(dev, SCD4X_CMD_SET_AMBIENT_PRESSURE, &ambient_pressure, 1);  in scd4x_set_ambient_pressure()
243 	if (ret < 0) {  in scd4x_set_ambient_pressure()
245 		return ret;  in scd4x_set_ambient_pressure()
254 	int ret;  in scd4x_set_automatic_calib_enable()  local
257 	ret = scd4x_write_reg(dev, SCD4X_CMD_SET_AUTOMATIC_CALIB_ENABLE, &automatic_calib_enable,  in scd4x_set_automatic_calib_enable()
259 	if (ret < 0) {  in scd4x_set_automatic_calib_enable()
261 		return ret;  in scd4x_set_automatic_calib_enable()
270 	int ret;  in scd4x_set_self_calib_initial_period()  local
273 	ret = scd4x_write_reg(dev, SCD4X_CMD_SET_SELF_CALIB_INITIAL_PERIOD, &initial_period, 1);  in scd4x_set_self_calib_initial_period()
274 	if (ret < 0) {  in scd4x_set_self_calib_initial_period()
276 		return ret;  in scd4x_set_self_calib_initial_period()
285 	int ret;  in scd4x_set_self_calib_standard_period()  local
288 	ret = scd4x_write_reg(dev, SCD4X_CMD_SET_SELF_CALIB_STANDARD_PERIOD, &standard_period, 1);  in scd4x_set_self_calib_standard_period()
289 	if (ret < 0) {  in scd4x_set_self_calib_standard_period()
291 		return ret;  in scd4x_set_self_calib_standard_period()
299 	int ret;  in scd4x_get_temperature_offset()  local
302 	ret = scd4x_write_command(dev, SCD4X_CMD_GET_TEMPERATURE_OFFSET);  in scd4x_get_temperature_offset()
303 	if (ret < 0) {  in scd4x_get_temperature_offset()
305 		return ret;  in scd4x_get_temperature_offset()
308 	ret = scd4x_read_reg(dev, rx_buf, sizeof(rx_buf));  in scd4x_get_temperature_offset()
309 	if (ret < 0) {  in scd4x_get_temperature_offset()
311 		return ret;  in scd4x_get_temperature_offset()
326 	int ret;  in scd4x_get_sensor_altitude()  local
329 	ret = scd4x_write_command(dev, SCD4X_CMD_GET_SENSOR_ALTITUDE);  in scd4x_get_sensor_altitude()
330 	if (ret < 0) {  in scd4x_get_sensor_altitude()
332 		return ret;  in scd4x_get_sensor_altitude()
335 	ret = scd4x_read_reg(dev, rx_buf, sizeof(rx_buf));  in scd4x_get_sensor_altitude()
336 	if (ret < 0) {  in scd4x_get_sensor_altitude()
338 		return ret;  in scd4x_get_sensor_altitude()
349 	int ret;  in scd4x_get_ambient_pressure()  local
352 	ret = scd4x_write_command(dev, SCD4X_CMD_GET_AMBIENT_PRESSURE);  in scd4x_get_ambient_pressure()
353 	if (ret < 0) {  in scd4x_get_ambient_pressure()
355 		return ret;  in scd4x_get_ambient_pressure()
358 	ret = scd4x_read_reg(dev, rx_buf, sizeof(rx_buf));  in scd4x_get_ambient_pressure()
359 	if (ret < 0) {  in scd4x_get_ambient_pressure()
361 		return ret;  in scd4x_get_ambient_pressure()
372 	int ret;  in scd4x_get_automatic_calib_enable()  local
375 	ret = scd4x_write_command(dev, SCD4X_CMD_GET_AUTOMATIC_CALIB_ENABLE);  in scd4x_get_automatic_calib_enable()
376 	if (ret < 0) {  in scd4x_get_automatic_calib_enable()
378 		return ret;  in scd4x_get_automatic_calib_enable()
381 	ret = scd4x_read_reg(dev, rx_buf, sizeof(rx_buf));  in scd4x_get_automatic_calib_enable()
382 	if (ret < 0) {  in scd4x_get_automatic_calib_enable()
384 		return ret;  in scd4x_get_automatic_calib_enable()
395 	int ret;  in scd4x_get_self_calib_initial_period()  local
398 	ret = scd4x_write_command(dev, SCD4X_CMD_GET_SELF_CALIB_INITIAL_PERIOD);  in scd4x_get_self_calib_initial_period()
399 	if (ret < 0) {  in scd4x_get_self_calib_initial_period()
401 		return ret;  in scd4x_get_self_calib_initial_period()
404 	ret = scd4x_read_reg(dev, rx_buf, sizeof(rx_buf));  in scd4x_get_self_calib_initial_period()
405 	if (ret < 0) {  in scd4x_get_self_calib_initial_period()
407 		return ret;  in scd4x_get_self_calib_initial_period()
418 	int ret;  in scd4x_get_self_calib_standard_period()  local
421 	ret = scd4x_write_command(dev, SCD4X_CMD_GET_SELF_CALIB_STANDARD_PERIOD);  in scd4x_get_self_calib_standard_period()
422 	if (ret < 0) {  in scd4x_get_self_calib_standard_period()
424 		return ret;  in scd4x_get_self_calib_standard_period()
427 	ret = scd4x_read_reg(dev, rx_buf, sizeof(rx_buf));  in scd4x_get_self_calib_standard_period()
428 	if (ret < 0) {  in scd4x_get_self_calib_standard_period()
430 		return ret;  in scd4x_get_self_calib_standard_period()
443 	int ret;  in scd4x_forced_recalibration()  local
445 	ret = scd4x_set_idle_mode(dev);  in scd4x_forced_recalibration()
446 	if (ret < 0) {  in scd4x_forced_recalibration()
448 		return ret;  in scd4x_forced_recalibration()
451 	ret = scd4x_write_reg(dev, SCD4X_CMD_FORCED_RECALIB, &target_concentration, 1);  in scd4x_forced_recalibration()
452 	if (ret < 0) {  in scd4x_forced_recalibration()
454 		return ret;  in scd4x_forced_recalibration()
457 	ret = scd4x_read_reg(dev, rx_buf, sizeof(rx_buf));  in scd4x_forced_recalibration()
458 	if (ret < 0) {  in scd4x_forced_recalibration()
460 		return ret;  in scd4x_forced_recalibration()
473 	ret = scd4x_setup_measurement(dev);  in scd4x_forced_recalibration()
474 	if (ret < 0) {  in scd4x_forced_recalibration()
476 		return ret;  in scd4x_forced_recalibration()
484 	int ret;  in scd4x_self_test()  local
487 	ret = scd4x_set_idle_mode(dev);  in scd4x_self_test()
488 	if (ret < 0) {  in scd4x_self_test()
490 		return ret;  in scd4x_self_test()
493 	ret = scd4x_write_command(dev, SCD4X_CMD_SELF_TEST);  in scd4x_self_test()
494 	if (ret < 0) {  in scd4x_self_test()
496 		return ret;  in scd4x_self_test()
499 	ret = scd4x_read_reg(dev, rx_buf, sizeof(rx_buf));  in scd4x_self_test()
500 	if (ret < 0) {  in scd4x_self_test()
502 		return ret;  in scd4x_self_test()
512 	ret = scd4x_setup_measurement(dev);  in scd4x_self_test()
513 	if (ret < 0) {  in scd4x_self_test()
515 		return ret;  in scd4x_self_test()
523 	int ret;  in scd4x_persist_settings()  local
525 	ret = scd4x_set_idle_mode(dev);  in scd4x_persist_settings()
526 	if (ret < 0) {  in scd4x_persist_settings()
528 		return ret;  in scd4x_persist_settings()
531 	ret = scd4x_write_command(dev, SCD4X_CMD_PERSIST_SETTINGS);  in scd4x_persist_settings()
532 	if (ret < 0) {  in scd4x_persist_settings()
534 		return ret;  in scd4x_persist_settings()
537 	ret = scd4x_setup_measurement(dev);  in scd4x_persist_settings()
538 	if (ret < 0) {  in scd4x_persist_settings()
540 		return ret;  in scd4x_persist_settings()
548 	int ret;  in scd4x_factory_reset()  local
550 	ret = scd4x_set_idle_mode(dev);  in scd4x_factory_reset()
551 	if (ret < 0) {  in scd4x_factory_reset()
553 		return ret;  in scd4x_factory_reset()
556 	ret = scd4x_write_command(dev, SCD4X_CMD_FACTORY_RESET);  in scd4x_factory_reset()
557 	if (ret < 0) {  in scd4x_factory_reset()
559 		return ret;  in scd4x_factory_reset()
562 	ret = scd4x_setup_measurement(dev);  in scd4x_factory_reset()
563 	if (ret < 0) {  in scd4x_factory_reset()
565 		return ret;  in scd4x_factory_reset()
575 	int ret;  in scd4x_sample_fetch()  local
583 		ret = scd4x_set_idle_mode(dev);  in scd4x_sample_fetch()
584 		if (ret < 0) {  in scd4x_sample_fetch()
586 			return ret;  in scd4x_sample_fetch()
590 			ret = scd4x_write_command(dev, SCD4X_CMD_MEASURE_SINGLE_SHOT_RHT);  in scd4x_sample_fetch()
591 			if (ret < 0) {  in scd4x_sample_fetch()
593 				return ret;  in scd4x_sample_fetch()
596 			ret = scd4x_write_command(dev, SCD4X_CMD_MEASURE_SINGLE_SHOT);  in scd4x_sample_fetch()
597 			if (ret < 0) {  in scd4x_sample_fetch()
599 				return ret;  in scd4x_sample_fetch()
603 		ret = scd4x_data_ready(dev, &is_data_ready);  in scd4x_sample_fetch()
604 		if (ret < 0) {  in scd4x_sample_fetch()
606 			return ret;  in scd4x_sample_fetch()
613 	ret = scd4x_read_sample(dev);  in scd4x_sample_fetch()
614 	if (ret < 0) {  in scd4x_sample_fetch()
616 		return ret;  in scd4x_sample_fetch()
620 		ret = scd4x_setup_measurement(dev);  in scd4x_sample_fetch()
621 		if (ret < 0) {  in scd4x_sample_fetch()
623 			return ret;  in scd4x_sample_fetch()
662 	int ret;  in scd4x_attr_set()  local
670 		ret = scd4x_set_idle_mode(dev);  in scd4x_attr_set()
671 		if (ret < 0) {  in scd4x_attr_set()
673 			return ret;  in scd4x_attr_set()
686 		ret = scd4x_set_temperature_offset(dev, val);  in scd4x_attr_set()
687 		if (ret < 0) {  in scd4x_attr_set()
689 			return ret;  in scd4x_attr_set()
696 		ret = scd4x_set_sensor_altitude(dev, val);  in scd4x_attr_set()
697 		if (ret < 0) {  in scd4x_attr_set()
699 			return ret;  in scd4x_attr_set()
706 		ret = scd4x_set_ambient_pressure(dev, val);  in scd4x_attr_set()
707 		if (ret < 0) {  in scd4x_attr_set()
709 			return ret;  in scd4x_attr_set()
717 		ret = scd4x_set_automatic_calib_enable(dev, val);  in scd4x_attr_set()
718 		if (ret < 0) {  in scd4x_attr_set()
720 			return ret;  in scd4x_attr_set()
731 		ret = scd4x_set_self_calib_initial_period(dev, val);  in scd4x_attr_set()
732 		if (ret < 0) {  in scd4x_attr_set()
734 			return ret;  in scd4x_attr_set()
745 		ret = scd4x_set_self_calib_standard_period(dev, val);  in scd4x_attr_set()
746 		if (ret < 0) {  in scd4x_attr_set()
748 			return ret;  in scd4x_attr_set()
755 	ret = scd4x_setup_measurement(dev);  in scd4x_attr_set()
756 	if (ret < 0) {  in scd4x_attr_set()
758 		return ret;  in scd4x_attr_set()
768 	int ret;  in scd4x_attr_get()  local
777 		ret = scd4x_set_idle_mode(dev);  in scd4x_attr_get()
778 		if (ret < 0) {  in scd4x_attr_get()
780 			return ret;  in scd4x_attr_get()
786 		ret = scd4x_get_temperature_offset(dev, val);  in scd4x_attr_get()
787 		if (ret < 0) {  in scd4x_attr_get()
789 			return ret;  in scd4x_attr_get()
793 		ret = scd4x_get_sensor_altitude(dev, val);  in scd4x_attr_get()
794 		if (ret < 0) {  in scd4x_attr_get()
796 			return ret;  in scd4x_attr_get()
800 		ret = scd4x_get_ambient_pressure(dev, val);  in scd4x_attr_get()
801 		if (ret < 0) {  in scd4x_attr_get()
803 			return ret;  in scd4x_attr_get()
808 		ret = scd4x_get_automatic_calib_enable(dev, val);  in scd4x_attr_get()
809 		if (ret < 0) {  in scd4x_attr_get()
811 			return ret;  in scd4x_attr_get()
819 		ret = scd4x_get_self_calib_initial_period(dev, val);  in scd4x_attr_get()
820 		if (ret < 0) {  in scd4x_attr_get()
822 			return ret;  in scd4x_attr_get()
830 		ret = scd4x_get_self_calib_standard_period(dev, val);  in scd4x_attr_get()
831 		if (ret < 0) {  in scd4x_attr_get()
833 			return ret;  in scd4x_attr_get()
840 	ret = scd4x_setup_measurement(dev);  in scd4x_attr_get()
841 	if (ret < 0) {  in scd4x_attr_get()
843 		return ret;  in scd4x_attr_get()
852 	int ret;  in scd4x_init()  local
859 	ret = scd4x_write_command(dev, SCD4X_CMD_STOP_PERIODIC_MEASUREMENT);  in scd4x_init()
860 	if (ret < 0) {  in scd4x_init()
863 		ret = scd4x_write_command(dev, SCD4X_CMD_WAKE_UP);  in scd4x_init()
864 		if (ret < 0) {  in scd4x_init()
866 			return ret;  in scd4x_init()
870 	ret = scd4x_write_command(dev, SCD4X_CMD_REINIT);  in scd4x_init()
871 	if (ret < 0) {  in scd4x_init()
873 		return ret;  in scd4x_init()
876 	ret = scd4x_setup_measurement(dev);  in scd4x_init()
877 	if (ret < 0) {  in scd4x_init()
879 		return ret;  in scd4x_init()