Apple Fan Control Unit sensor
fcu* at iic?
fcu driver provides support for the
Apple Fan Control Unit (FCU). The device controls and monitors fans found in
some Apple machines. Fan speed readings and PWM settings are made available
through the sysctl(8) interface.
iic(4), intro(4), sensorsd(8), sysctl(8)
fcu driver was written by
Theo de Raadt