From f13bdbd1fb75d0a6901012ab01a34754b2a4c6cf Mon Sep 17 00:00:00 2001
From: Akshu Agrawal <akshu.a@samsung.com>
Date: Mon, 28 Apr 2014 21:26:39 +0900
Subject: [PATCH] drm/exynos: fimd: clear channel before enabling iommu

If any fimd channel was already active, initializing iommu will result
in a PAGE FAULT (e.e. u-boot could have turned on the display and
not disabled it before the kernel starts). This patch checks if any
channel is active before initializing iommu and disables it.

Signed-off-by: Akshu Agrawal <akshu.a@samsung.com>
Signed-off-by: Prathyush K <prathyush.k@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
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