From: Jani Nikula <jani.nikula@intel.com>
Date: Fri, 30 Aug 2013 16:40:30 +0000 (+0300)
Subject: drm/i915: add opregion function to notify bios of encoder enable/disable
X-Git-Tag: v3.13-rc1~76^2~114^2~91
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9c4b0a683193a646ea3b0c609a2276ae99a7cee4;p=pandora-kernel.git

drm/i915: add opregion function to notify bios of encoder enable/disable

The bios interface seems messy, and it's hard to tell what the bios
really wants. At first, only add support for DDI based machines (hsw+),
and see how it turns out.

The spec says to notify prior to power down and after power up. It is
unclear whether it makes a difference.

v2:
 - squash notification function and callers patches together (Daniel)
 - move callers to haswell_crtc_{enable,disable} (Daniel)
 - rename notification function (Chris)

v3:
 - separate notification function and callers again, as it's not clear
   whether the display power state notification is the right thing to do
   after all

v4: per Paulo's review:
 - drop LVDS
 - WARN on unsupported encoder types

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

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