iio/chemical/scd30_core.c

59 	int ret;
61 	ret = state->command(state, cmd, 0, &tmp, sizeof(tmp));
64 	return ret;
69 	int ret;
72 	ret = scd30_command_write(state, CMD_RESET, 0);
73 	if (ret)
74 		return ret;
117 	int i, ret;
119 	ret = state->command(state, CMD_READ_MEAS, 0, state->meas, sizeof(state->meas));
120 	if (ret)
121 		return ret;
140 	int ret, timeout;
145 	ret = wait_for_completion_interruptible_timeout(&state->meas_ready, timeout);
146 	if (ret > 0)
147 		ret = 0;
148 	else if (!ret)
149 		ret = -ETIMEDOUT;
153 	return ret;
161 		int ret;
164 		ret = scd30_command_read(state, CMD_MEAS_READY, &val);
165 		if (ret)
180 	int ret;
182 	ret = scd30_wait_meas_poll(state);
183 	if (ret)
184 		return ret;
201 	int ret = -EINVAL;
210 			ret = IIO_VAL_INT;
214 		ret = iio_device_claim_direct_mode(indio_dev);
215 		if (ret)
218 		ret = scd30_read(state);
219 		if (ret) {
226 		ret = IIO_VAL_INT;
231 		ret = IIO_VAL_INT_PLUS_MICRO;
234 		ret = scd30_command_read(state, CMD_MEAS_INTERVAL, &tmp);
235 		if (ret)
240 		ret = IIO_VAL_INT_PLUS_NANO;
243 		ret = scd30_command_read(state, CMD_TEMP_OFFSET, &tmp);
244 		if (ret)
248 		ret = IIO_VAL_INT;
253 	return ret;
260 	int ret = -EINVAL;
272 		ret = scd30_command_write(state, CMD_MEAS_INTERVAL, val);
273 		if (ret)
285 			ret = scd30_command_write(state, CMD_START_MEAS, val);
286 			if (ret)
302 		ret = scd30_command_write(state, CMD_TEMP_OFFSET / 10, val);
306 	return ret;
376 	int ret;
380 	ret = scd30_command_read(state, CMD_ASC, &val);
383 	return ret ?: sysfs_emit(buf, "%d\n", val);
392 	int ret;
394 	ret = kstrtobool(buf, &val);
395 	if (ret)
396 		return ret;
399 	ret = scd30_command_write(state, CMD_ASC, val);
402 	return ret ?: len;
410 	int ret;
414 	ret = scd30_command_read(state, CMD_FRC, &val);
417 	return ret ?: sysfs_emit(buf, "%d\n", val);
425 	int ret;
428 	ret = kstrtou16(buf, 0, &val);
429 	if (ret)
430 		return ret;
436 	ret = scd30_command_write(state, CMD_FRC, val);
439 	return ret ?: len;
524 	int ret;
526 	ret = scd30_command_write(state, CMD_STOP_MEAS, 0);
527 	if (ret)
528 		return ret;
537 	int ret;
539 	ret = regulator_enable(state->vdd);
540 	if (ret)
541 		return ret;
579 	int ret;
581 	ret = scd30_read_meas(state);
582 	if (ret)
599 	int ret;
603 		ret = scd30_read_poll(state);
605 		ret = scd30_read_meas(state);
609 	if (ret)
641 	int ret;
651 	ret = devm_iio_trigger_register(dev, trig);
652 	if (ret)
653 		return ret;
662 	ret = devm_request_threaded_irq(dev, state->irq, scd30_irq_handler,
667 	if (ret)
668 		return dev_err_probe(dev, ret, "failed to request irq\n");
679 	int ret;
709 	ret = regulator_enable(state->vdd);
710 	if (ret)
711 		return ret;
713 	ret = devm_add_action_or_reset(dev, scd30_disable_regulator, state);
714 	if (ret)
715 		return ret;
717 	ret = scd30_reset(state);
718 	if (ret)
719 		return dev_err_probe(dev, ret, "failed to reset device\n");
722 		ret = scd30_setup_trigger(indio_dev);
723 		if (ret)
724 			return dev_err_probe(dev, ret, "failed to setup trigger\n");
727 	ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL, scd30_trigger_handler, NULL);
728 	if (ret)
729 		return ret;
731 	ret = scd30_command_read(state, CMD_FW_VERSION, &val);
732 	if (ret)
733 		return dev_err_probe(dev, ret, "failed to read firmware version\n");
736 	ret = scd30_command_write(state, CMD_MEAS_INTERVAL, state->meas_interval);
737 	if (ret)
738 		return dev_err_probe(dev, ret, "failed to set measurement interval\n");
740 	ret = scd30_command_write(state, CMD_START_MEAS, state->pressure_comp);
741 	if (ret)
742 		return dev_err_probe(dev, ret, "failed to start measurement\n");
744 	ret = devm_add_action_or_reset(dev, scd30_stop_meas, state);
745 	if (ret)
746 		return ret;