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path: root/drivers/gpu/drm/exynos/exynos_drm_drv.c
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Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_drv.c')
-rw-r--r--drivers/gpu/drm/exynos/exynos_drm_drv.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
index def78c8c1780..f86e7c846678 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -262,6 +262,26 @@ int exynos_atomic_commit(struct drm_device *dev, struct drm_atomic_state *state,
return 0;
}
+int exynos_atomic_check(struct drm_device *dev,
+ struct drm_atomic_state *state)
+{
+ int ret;
+
+ ret = drm_atomic_helper_check_modeset(dev, state);
+ if (ret)
+ return ret;
+
+ ret = drm_atomic_normalize_zpos(dev, state);
+ if (ret)
+ return ret;
+
+ ret = drm_atomic_helper_check_planes(dev, state);
+ if (ret)
+ return ret;
+
+ return ret;
+}
+
static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
{
struct drm_exynos_file_private *file_priv;