From e435d6e52b164c041d3b0f88be3f7b8c5a14462a Mon Sep 17 00:00:00 2001
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Date: Mon, 13 Jul 2015 16:30:15 +0200
Subject: [PATCH] drm/i915: Do not update pfit state when toggling crtc
 enabled.

There's not much point for calculating the changes for the old
state. Instead just disable all scalers when disabling. It's
probably good enough to just disable the crtc_scaler, but just in
case there's a bug disable all scalers.

This means intel_atomic_setup_scalers is only called in the crtc
check function now, so all the transitional code can be removed.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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