From: Alex Deucher <alexander.deucher@amd.com>
Date: Fri, 31 Aug 2012 15:56:50 +0000 (-0400)
Subject: drm/radeon: rework pll selection (v4)
X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~20^2~3^2~22
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f3dd8508d459a2d0d0bc426144b92f1696d4fe86;p=pandora-kernel.git

drm/radeon: rework pll selection (v4)

For DP we can use the same PPLL for all active DP
encoders.  Take advantage of that to prevent cases
where we may end up sharing a PPLL between DP and
non-DP which won't work.  Also clean up the code
a bit.

v2: - fix missing pll_id assignment in crtc init
v3: - fix DP PPLL check
    - document functions
    - break in main encoder search loop after matching.
      no need to keep checking additional encoders.
v4: - same as v3, but re-apply to drm-next as the corner
      cases are fixed properly in subsequent patches.

fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=54471

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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