tree 1473bc3a399683eebef2bd10d54d25e7269a636b
parent ae226194bb243e82a93915f8c11a29813a0ea937
author Jolie Ku <jolie_ku@wistron.com> 1603245583 +0800
committer Matthew Barth <msbarth@linux.ibm.com> 1609972802 +0000

monitor: Add up/down count fault detection

Create an up/down count fault determination algorithm that
could be used in place of the current timer based outOfRange()
function.
The up/down count is a different method for determining when
a fan is faulted by counting up each iteration a rotor is
out of spec and removing those counts when the rotor
returns within spec.

Tested:
    1. Remove a fan and run Mihawk, the counter add 1 when sensor
       is out of spec, and replaced the fan back before hit the
       threshold, the counter decrement back to 0.
    2. Remove a fan, counter add 1 and mark the removed fan as
       nonfunctional when counter reaches the threshold, and
       Replaced the fan back, counter will decrement back to 0
       and fan back to functional.

Change-Id: I632dd2c7553b007beb7ae6bb694a590d2cfc2a1c
Signed-off-by: Jolie Ku <jolie_ku@wistron.com>
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>