1 files changed, 25 insertions, 0 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.h b/drivers/gpu/drm/exynos/exynos_drm_crtc.h
index c584042d6d2c..25f72a62cb88 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.h
@@ -35,4 +35,29 @@ int exynos_drm_crtc_create(struct drm_device *dev, unsigned int nr);
 int exynos_drm_crtc_enable_vblank(struct drm_device *dev, int crtc);
 void exynos_drm_crtc_disable_vblank(struct drm_device *dev, int crtc);
 
+/*
+ * Exynos specific crtc postion structure.
+ *
+ * @fb_x: offset x on a framebuffer to be displyed
+ *      - the unit is screen coordinates.
+ * @fb_y: offset y on a framebuffer to be displayed
+ *      - the unit is screen coordinates.
+ * @crtc_x: offset x on hardware screen.
+ * @crtc_y: offset y on hardware screen.
+ * @crtc_w: width of hardware screen.
+ * @crtc_h: height of hardware screen.
+ */
+struct exynos_drm_crtc_pos {
+        unsigned int fb_x;
+        unsigned int fb_y;
+        unsigned int crtc_x;
+        unsigned int crtc_y;
+        unsigned int crtc_w;
+        unsigned int crtc_h;
+};
+
+int exynos_drm_overlay_update(struct exynos_drm_overlay *overlay,
+                              struct drm_framebuffer *fb,
+                              struct drm_display_mode *mode,
+                              struct exynos_drm_crtc_pos *pos);
 #endif