tree 01002dfa5a34d991477e3f3347b8c1e05457c5e8
parent 618027abcf491b0b58f71bfe2b48c55dfb86462e
author Matthew Barth <msbarth@us.ibm.com> 1497389349 -0500
committer Patrick Williams <patrick@stwcx.xyz> 1498665551 +0000

Enable setting/adjusting fan ceiling speed

Set the default ceiling to be what's given as full speed and adjust the
ceiling speed based on an average of a given set of sensor values.

The ceiling is chosen from a given map's key transition values. The map
consists of key, value pairs where each key is the sensor value
transition point and the value is the ceiling speed for when that
transition occurs. The previous key value is needed to determine the
direction in which to chose the appropriate ceiling speed allowing a
buffer zone between ceiling changes if defined to.

Resolves openbmc/openbmc#1628

Change-Id: I7c9c553b5d0c3219c51b563aec7dd5d5f090916b
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>