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| author | Inki Dae <inki.dae@samsung.com> | 2012-08-20 19:55:14 +0900 |
|---|---|---|
| committer | Inki Dae <inki.dae@samsung.com> | 2012-10-04 10:05:59 +0900 |
| commit | b011941f0ffdefb87585d9ed786164037d0d50df (patch) | |
| tree | 5108a8c71a1177206a44e695d7a1f3d9e6709a10 /drivers/gpu/drm/exynos/exynos_drm_encoder.c | |
| parent | 50caf25c583b938c681b61e64dac58da9b640f2f (diff) | |
| download | linux-b011941f0ffdefb87585d9ed786164037d0d50df.tar.bz2 | |
drm/exynos: add wait_for_vblank callback interface.
Changelog v2:
fixed comments.
Changelog v1:
this interface can be used to make sure that hardware overlay is disabled
to avoid that memory region is accessed by dma after gem buffer was released.
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_encoder.c')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_encoder.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_encoder.c b/drivers/gpu/drm/exynos/exynos_drm_encoder.c index 08ba62fe2f16..f4531167fda6 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_encoder.c +++ b/drivers/gpu/drm/exynos/exynos_drm_encoder.c @@ -430,4 +430,14 @@ void exynos_drm_encoder_plane_disable(struct drm_encoder *encoder, void *data) if (overlay_ops && overlay_ops->disable) overlay_ops->disable(manager->dev, zpos); + + /* + * wait for vblank interrupt + * - this makes sure that hardware overlay is disabled to avoid + * for the dma accesses to memory after gem buffer was released + * because the setting for disabling the overlay will be updated + * at vsync. + */ + if (overlay_ops->wait_for_vblank) + overlay_ops->wait_for_vblank(manager->dev); } |