From: Jesse Barnes <jbarnes@virtuousgeek.org>
Date: Thu, 2 May 2013 17:48:09 +0000 (-0700)
Subject: drm/i915: set proper DPIO post divider for VGA on VLV v4
X-Git-Tag: v3.11-rc1~65^2~131^2~41
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7df5080bc7f3e3fba9cddac71133ed52864c40be;p=pandora-kernel.git

drm/i915: set proper DPIO post divider for VGA on VLV v4

Supposedly we should use the DAC divider for <300MHz pixel clocks, but as
that doesn't actually work as well as the high freq divider here in
practice, just use the high freq divider all the time.

v2: remove unconditional write (Jesse)
    check for pixel rate properly (Jesse)
v3: give up, the DAC divider apparently doesn't work, and low res modes
    work ok (Jesse)
    remove debug msg (Jesse)

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Tested-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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