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| author |   Marek Szyprowski <m.szyprowski@samsung.com> | 2016-02-29 17:50:53 +0900 |
|---|---|---|
| committer |   Inki Dae <daeinki@gmail.com> | 2016-03-01 23:53:47 +0900 |
| commit | f43c35966a5ac6accb197f68b05f14bb4e6d3913 (patch) | |
| tree | f03d2943e7d3e527dbd6ad67a7274bb7aaf86c17 /drivers/gpu/drm/exynos/exynos_drm_drv.h | |
| parent | drm/exynos: refactor driver and device registration code (diff) | |
| download | linux-dev-f43c35966a5ac6accb197f68b05f14bb4e6d3913.tar.xz linux-dev-f43c35966a5ac6accb197f68b05f14bb4e6d3913.zip | |
drm/exynos: use real device for DMA-mapping operations
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>
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_drv.h')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_drv.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h index 34a139b2fb8d..502f750bad2a 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_drv.h +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h @@ -219,8 +219,10 @@ struct exynos_drm_private { struct drm_crtc *crtc[MAX_CRTC]; struct drm_property *plane_zpos_property; + struct device *dma_dev; unsigned long da_start; unsigned long da_space_size; + void *mapping; unsigned int pipe; @@ -230,6 +232,13 @@ struct exynos_drm_private { wait_queue_head_t wait; }; +static inline struct device *to_dma_dev(struct drm_device *dev) +{ + struct exynos_drm_private *priv = dev->dev_private; + + return priv->dma_dev; +} + /* * Exynos drm sub driver structure. * |