tree 8f5d8f7958b2f59d525a8c1cba24c4fe0fac1e80
parent 608304da320f232b9adc591301581a5fa5949fff
author James Feist <james.feist@linux.intel.com> 1551127802 -0800
committer James Feist <james.feist@linux.intel.com> 1551205937 +0000

dbuspassive: allow scaling

For tachs it is beneficial to deal in percent so that
multiple controllers can be used with different fan
types without having to recalculate. This starts using
the unused min and max fields to be able to scale readings.
Since max and min are commonly on the value interface, the
special value of <int64_t>::lowest() allows these to be gathered
from dbus instead of having to enter them manually.

Tested-by: Moved pid control to percent and printed
outputs

Change-Id: I9496eb92a18b68a7cd7f034d41d40ef5175c6974
Signed-off-by: James Feist <james.feist@linux.intel.com>