From 44395bfe2f2a22ec769eb51ea1908082cf9aa16d Mon Sep 17 00:00:00 2001
From: Durgadoss R <durgadoss.r@intel.com>
Date: Fri, 13 Feb 2015 15:33:02 +0530
Subject: [PATCH] drm/i915: Enable eDP DRRS for CHV

This patch enables eDP DRRS for CHV by adding the
required IS_CHERRYVIEW() checks.
CHV uses the same register bit as VLV.

[Vandana]: Since CHV has 2 sets of M_N registers, it will follow the same code
path as gen < 8. Added CHV check in dp_set_m_n()

[Ram]: Rebased on top of previous patch modifications

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Vandana Kannan <vandana.kannan@intel.com>
Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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