From bd002d7bdafc695decf7d4aeba285097356938f1 Mon Sep 17 00:00:00 2001 From: Nishanth Menon Date: Fri, 6 Jun 2014 01:04:20 -0500 Subject: [PATCH] ARM: OMAP2+: powerdomain: introduce logic for finding valid power domain powerdomain configuration in OMAP is done using PWRSTCTRL register for each power domain. However, PRCM lets us write any value we'd like to the logic and power domain target states, however the SoC integration tends to actually function only at a few discrete states. These valid states are already in our powerdomains_xxx_data.c file. So, provide a function to easily query valid low power state that the power domain is allowed to go to. Based on work originally done by Jean Pihet https://patchwork.kernel.org/patch/1325091/ . There is no attempt to create a new powerdomain solution here, except fixing issues seen attempting invalid programming attempts. Future consolidation to the generic powerdomain framework should consider this requirement as well. Similar solutions have been done in product kernels in the past such as: https://android.googlesource.com/kernel/omap.git/+blame/android-omap-panda-3.0/arch/arm/mach-omap2/pm44xx.c Signed-off-by: Nishanth Menon Reviewed-by: Kevin Hilman Acked-by: Santosh Shilimkar --- Reading git-format-patch failed