drm/exynos: fixed overlay data updating.

this patch adds common members to overlay structure and
makes each driver such as fimd or hdmi driver set them to
its own structure.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_buf.h b/drivers/gpu/drm/exynos/exynos_drm_buf.h
index 9b1f0fb8d3a5..045d59eab01a 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_buf.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_buf.h
@@ -43,6 +43,9 @@ struct exynos_drm_buf_entry {
 struct exynos_drm_buf_entry *exynos_drm_buf_create(struct drm_device *dev,
                 unsigned int size);
 
+/* get physical memory information of a drm framebuffer. */
+struct exynos_drm_buf_entry *exynos_drm_fb_get_buf(struct drm_framebuffer *fb);
+
 /* remove allocated physical memory. */
 void exynos_drm_buf_destroy(struct drm_device *dev,
                 struct exynos_drm_buf_entry *entry);