tree abccacfb8e6db3249c71ed113ebe46e162958007
parent c59428b1502f37c9b2f551613da1b491c4226d10
author Soby Mathew <soby.mathew@arm.com> 1477046099 +0100
committer Soby Mathew <soby.mathew@arm.com> 1481114755 +0000

Introduce SCP power management abstraction

This patch introduces an additional layer of abstraction between
CSS power management hooks and the SCPI driver. A new set of APIs
are introduced in order to abstract out power management operations
from underlying communication mechanism with the SCP.

The SCPI and the associated MHU drivers are moved into a `drivers`
folder in CSS. The new SCP communication abstraction layer is added
in the `drivers/scp` folder. The existing CSS power management
uses the new APIs to reflect this abstraction.

Change-Id: I7d775129fc0558e9703c2724523fb8f0a916838c
Signed-off-by: Soby Mathew <soby.mathew@arm.com>