From 6878da05006feb68efe23a6ae010b1a5df32ca5f Mon Sep 17 00:00:00 2001
From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala@linux.intel.com>
Date: Fri, 13 Sep 2013 15:59:11 +0300
Subject: [PATCH] drm/i915: Add intel_dotclock_calculate()
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Extract the code to calculate the dotclock from the link clock and M/N
values into a new function from ironlake_crtc_clock_get().

The new function can be used to calculate the dotclock for both FDI and
DP cases.

Also simplify the code a bit along the way.

v2: Don't forget about non-pch encoders in ironlake_crtc_clock_get()

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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