From: Imre Deak Date: Tue, 4 Mar 2014 17:22:54 +0000 (+0200) Subject: drm/i915: add init power domain to always-on power wells X-Git-Tag: v3.15-rc1~51^2~55^2~18 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f5938f363535b1723f81bd5debcb7ce5161ece95;p=pandora-kernel.git drm/i915: add init power domain to always-on power wells Whenever we request a power domain it has to guarantee that all HW resources are enabled that are needed to access a HW register associated with that power domain. In case a register is on an always-on power well this won't result in turning on a power well, but it may require enabling some other HW resource. One such resource is the HSW/BDW device D0 state that is required for all register accesses and thus for all power wells/power domains. So far the init power domain (guaranteeing access to all HW registers) was part of the default i9xx always-on power well, but not the HSW/BDW always-on power wells. Add the domain to the latter power wells too. Atm, all the always-on power wells have noop handlers, so this doesn't change the functionality. v2: - clarify semantics of always-on power wells (Paulo) Signed-off-by: Imre Deak Reviewed-by: Jesse Barnes Signed-off-by: Daniel Vetter --- Reading git-diff-tree failed