ORANGEPI_SENSOR_PWM_ENABLE_REG
return write_to_ec(ORANGEPI_SENSOR_PWM_ENABLE_REG, PWM_MODE_MANUAL);
return write_to_ec(ORANGEPI_SENSOR_PWM_ENABLE_REG, PWM_MODE_AUTO);
return read_from_ec(ORANGEPI_SENSOR_PWM_ENABLE_REG, 1, val);