NAME
acpifan —
ACPI Fan
SYNOPSIS
acpifan* at acpi?
DESCRIPTION
The
acpifan device driver supports fans possibly exposed by
the BIOS. Even if a system contains only one physical fan, multiple
acpifan instances may be present. In such cases each
acpifan typically represents an
acpitz(4) thermal zone, and the
combined state of all instances reveals the speed of the fan.
The
acpifan driver does not support controlling the fan. The
current state (on or off) is made available through the
envsys(4) API and the
envstat(8) command.
SEE ALSO
acpi(4),
acpitz(4)
HISTORY
The
acpifan device driver appeared in
NetBSD
6.0.
AUTHORS
Jukka Ruohonen ⟨jruohonen@iki.fi⟩
BUGS
The
acpifan driver does not yet support additional
functionality introduced in the ACPI 4.0 specification.