From: Alex Deucher <alexander.deucher@amd.com>
Date: Wed, 15 Aug 2012 21:18:42 +0000 (-0400)
Subject: drm/radeon: properly handle mc_stop/mc_resume on evergreen+ (v2)
X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~20^2~3^2~74
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=62444b7462a2b98bc78d68736c03a7c4e66ba7e2;p=pandora-kernel.git

drm/radeon: properly handle mc_stop/mc_resume on evergreen+ (v2)

- Stop the displays from accessing the FB
- Block CPU access
- Turn off MC client access

This should fix issues some users have seen, especially
with UEFI, when changing the MC FB location that result
in hangs or display corruption.

v2: fix crtc enabled check noticed by Luca Tettamanti

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