tree fc7c19e32d37af0fddbe670c0f95c91820eca0cb
parent 8c3c51eed8584ad662014c10cc031b5bd8399415
author James Feist <james.feist@linux.intel.com> 1535749632 -0700
committer Patrick Venture <venture@google.com> 1536763083 +0000

Add stepwise controller

This adds the ability to use stepwise curves alongside
pid control. This creates a base controller class that
pidcontroller and stepwise controller inherit from.

Note: Hysteresis to come in follow-on patch

Tested-by:
Created a stepwise controller and noticed that when it
crossed a threshold that it contributed to the pwm setting.

Change-Id: I6cf842f80eaccafc905d620970afe91e2092d568
Signed-off-by: James Feist <james.feist@linux.intel.com>