From: Jesse Barnes <jbarnes@virtuousgeek.org>
Date: Mon, 19 Aug 2013 18:04:55 +0000 (-0700)
Subject: drm/i915: make IVB FDI training match spec v3
X-Git-Tag: v3.12-rc1~136^2~14^2~25
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=139ccd3fb12b3d17a773d2d61140f955a47fa470;p=pandora-kernel.git

drm/i915: make IVB FDI training match spec v3

The existing code was trying different vswing and preemphasis settings
in the wrong place, and wasn't trying them enough.  So add a loop to
walk through them, properly disabling FDI TX and RX in between if a
failure is detected.

v2: remove unneeded reg writes, add delays around bit lock checks (Jesse)
v3: fix TX and RX disable per spec (Paulo)
    fix delays per spec (Paulo)
    make RX symbol lock check match TX bit lock check (Paulo)

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=51983
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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