From: Vikas Sajjan <vikas.sajjan@linaro.org>
Date: Tue, 6 Aug 2013 11:52:04 +0000 (+0530)
Subject: drm/exynos: Add fallback option to get non physically contiguous memory for fb
X-Git-Tag: v3.12-rc1~136^2^2~20
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a1bfacf4006a3bb410b0fa85e203f9249d2d35e9;p=pandora-kernel.git

drm/exynos: Add fallback option to get non physically contiguous memory for fb

While trying to get boot-logo up on exynos5420 SMDK which has eDP panel
connected with resolution 2560x1600, following error occured even with
IOMMU enabled:
[0.880000] [drm:lowlevel_buffer_allocate] *ERROR* failed to allocate buffer.
[0.890000] [drm] Initialized exynos 1.0.0 20110530 on minor 0

To address the cases where physically contiguous memory MAY NOT be a
mandatory requirement for fb, the patch adds a feature to get non physically
contiguous memory for fb if physically contiguous memory allocation fails
and if IOMMU is supported.

Signed-off-by: Vikas Sajjan <vikas.sajjan@linaro.org>
Signed-off-by: Arun Kumar <arun.kk@samsung.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
---

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