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: NVikas Sajjan <vikas.sajjan@linaro.org> Signed-off-by: NArun Kumar <arun.kk@samsung.com> Reviewed-by: NRob Clark <robdclark@gmail.com> Signed-off-by: NInki Dae <inki.dae@samsung.com>
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