From: Dave Airlie <airlied@redhat.com>
Date: Thu, 19 Feb 2015 23:21:36 +0000 (+1000)
Subject: drm/radeon: program auxch directly (v2)
X-Git-Tag: omap-for-v4.1/fixes-rc1~82^2~27^2~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=875711f0e217b00cba1a851eee01c4e33041a91c;p=pandora-kernel.git

drm/radeon: program auxch directly (v2)

The atombios tables have an unfortunate restriction on only
being able to write 12 bytes, MST really wants 16-bytes here,
and since the hw can do it, we should just write directly to it.

This uses a module option to allow for it now, and maybe
we should provide the old code as a fallback for a while.

v2: (agd5f)
- move registers to a proper register header
- only enable on DCE5+
- enable by default on DCE5+
- Switch pad to aux mode before using it
- reformat instance handling to better match the
  rest of the driver

Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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