acpifan(4) - NetBSD Manual Pages

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ACPIFAN(4)              NetBSD Kernel Interfaces Manual             ACPIFAN(4)


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 repre-
     sents 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 intro-
     duced in the ACPI 4.0 specification.

NetBSD 6.1.2                    January 9, 2011                   NetBSD 6.1.2