System Management Controller (SMC)
asmc0 at isa? port 0x300
driver provides support for the Apple
System Management Controller (SMC), as found in Intel based Apple devices.
The driver possesses a collection of temperature, fan, light, and acceleration
sensor values which are made available through the
If available, the keyboard backlight is enabled by the driver and can be
adjusted using the
driver first appeared in
driver was written by
Light sensor values may not be available on older products.
Acceleration sensors are not available and the associated interrupt handling is
Besides the sensors, the huge amount of other functions and information
available from the SMC is not supported.