drm/exynos: use real device for DMA-mapping operations

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This patch changes device pointer provided to all calls to DMA-mapping
subsystem from the virtual exynos-drm 'device' to the real device pointer
of one of the CRTC devices (decon, fimd or mixer). This way no more hacks
will be needed to configure proper DMA-mapping address space on the common
virtual exynos-drm device. This change also removes the need for some
hacks in IOMMU related code. It also finally solves the problem of Exynos
DRM driver not working on ARM64 architecture, which provides noop-based
DMA-mapping operations for virtual platform devices.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

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This commit is contained in:

Marek Szyprowski 2016-02-29 17:50:53 +09:00 • committed by Inki Dae

parent a5fb26cdaa

commit f43c35966a

7 changed files with 69 additions and 46 deletions

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42

drivers/gpu/drm/exynos/exynos_drm_drv.c

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9

drivers/gpu/drm/exynos/exynos_drm_drv.h

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2

drivers/gpu/drm/exynos/exynos_drm_fbdev.c

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7

drivers/gpu/drm/exynos/exynos_drm_g2d.c

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14

drivers/gpu/drm/exynos/exynos_drm_gem.c

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37

drivers/gpu/drm/exynos/exynos_drm_iommu.c

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4

drivers/gpu/drm/exynos/exynos_drm_iommu.h

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