ASMC(4) FreeBSD Kernel Interfaces Manual ASMC(4)
NAME
asmc - Apple System Management Controller (SMC)
SYNOPSIS
asmc0 at acpi?
DESCRIPTION
The asmc 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 sysctl(8)
interface.
If available, the keyboard backlight is enabled by the driver and can be
adjusted using the wsconsctl(8) variable keyboard.backlight.
SEE ALSO
acpi(4), intro(4), sensorsd(8), sysctl(8), wsconsctl(8)
HISTORY
The asmc driver first appeared in OpenBSD 5.9.
AUTHORS
The asmc driver was written by Joerg Jung <
[email protected]>.
CAVEATS
Light sensor values may not be available on older products.
Acceleration sensors are not available and the associated interrupt
handling is not implemented.
Besides the sensors, the huge amount of other functions and information
available from the SMC is not supported.
FreeBSD 14.1-RELEASE-p8 September 13, 2020 FreeBSD 14.1-RELEASE-p8