diff --git a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
index bdfec5f977e9..24df0b307b2f 100644
--- a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
+++ b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
@@ -24,7 +24,6 @@
 #include "exynos_drm_drv.h"
 #include "exynos_drm_crtc.h"
 #include "exynos_drm_fb.h"
-#include "exynos_drm_plane.h"
 #include "regs-decon5433.h"
 
 #define DSD_CFG_MUX 0x1004
diff --git a/drivers/gpu/drm/exynos/exynos7_drm_decon.c b/drivers/gpu/drm/exynos/exynos7_drm_decon.c
index 381aa3d60e37..812941b84287 100644
--- a/drivers/gpu/drm/exynos/exynos7_drm_decon.c
+++ b/drivers/gpu/drm/exynos/exynos7_drm_decon.c
@@ -27,7 +27,6 @@
 #include <video/of_videomode.h>
 
 #include "exynos_drm_crtc.h"
-#include "exynos_drm_plane.h"
 #include "exynos_drm_drv.h"
 #include "exynos_drm_fb.h"
 #include "regs-decon7.h"
diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
index 96ee83a798c4..1eebfa3fa8da 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
@@ -20,7 +20,6 @@
 
 #include "exynos_drm_crtc.h"
 #include "exynos_drm_drv.h"
-#include "exynos_drm_plane.h"
 
 static void exynos_drm_crtc_atomic_enable(struct drm_crtc *crtc,
 					  struct drm_crtc_state *old_state)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
index e1ef9dc9ebf3..2155586646dc 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -26,7 +26,6 @@
 #include "exynos_drm_fbdev.h"
 #include "exynos_drm_fb.h"
 #include "exynos_drm_gem.h"
-#include "exynos_drm_plane.h"
 #include "exynos_drm_ipp.h"
 #include "exynos_drm_vidi.h"
 #include "exynos_drm_g2d.h"
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h
index 71eb240bc1f4..6e38d0dc4457 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
@@ -113,6 +113,10 @@ struct exynos_drm_plane_config {
 	unsigned int capabilities;
 };
 
+int exynos_plane_init(struct drm_device *dev,
+		      struct exynos_drm_plane *exynos_plane, unsigned int index,
+		      const struct exynos_drm_plane_config *config);
+
 /*
  * Exynos drm crtc ops
  *
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index 46588a14f0c3..b1a9502a4140 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -31,7 +31,6 @@
 #include "exynos_drm_drv.h"
 #include "exynos_drm_fb.h"
 #include "exynos_drm_crtc.h"
-#include "exynos_drm_plane.h"
 
 /*
  * FIMD stands for Fully Interactive Mobile Display and
diff --git a/drivers/gpu/drm/exynos/exynos_drm_plane.c b/drivers/gpu/drm/exynos/exynos_drm_plane.c
index df0508e0e49e..8af0eba3f362 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_plane.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_plane.c
@@ -19,7 +19,6 @@
 #include "exynos_drm_crtc.h"
 #include "exynos_drm_fb.h"
 #include "exynos_drm_gem.h"
-#include "exynos_drm_plane.h"
 
 /*
  * This function is to get X or Y size shown via screen. This needs length and
diff --git a/drivers/gpu/drm/exynos/exynos_drm_plane.h b/drivers/gpu/drm/exynos/exynos_drm_plane.h
deleted file mode 100644
index 497047b19614..000000000000
--- a/drivers/gpu/drm/exynos/exynos_drm_plane.h
+++ /dev/null
@@ -1,14 +0,0 @@
-/*
- * Copyright (C) 2011 Samsung Electronics Co.Ltd
- * Authors: Joonyoung Shim <jy0922.shim@samsung.com>
- *
- * This program is free software; you can redistribute  it and/or modify it
- * under  the terms of  the GNU General  Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
- * option) any later version.
- *
- */
-
-int exynos_plane_init(struct drm_device *dev,
-		      struct exynos_drm_plane *exynos_plane, unsigned int index,
-		      const struct exynos_drm_plane_config *config);
diff --git a/drivers/gpu/drm/exynos/exynos_drm_vidi.c b/drivers/gpu/drm/exynos/exynos_drm_vidi.c
index 29f4c1932aed..ec30d5aca9aa 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_vidi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_vidi.c
@@ -26,7 +26,6 @@
 #include "exynos_drm_drv.h"
 #include "exynos_drm_crtc.h"
 #include "exynos_drm_fb.h"
-#include "exynos_drm_plane.h"
 #include "exynos_drm_vidi.h"
 
 /* VIDI uses fixed refresh rate of 50Hz */
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index 0573eab0e190..1faa67fa7e5c 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -39,7 +39,6 @@
 #include "exynos_drm_drv.h"
 #include "exynos_drm_crtc.h"
 #include "exynos_drm_fb.h"
-#include "exynos_drm_plane.h"
 
 #define MIXER_WIN_NR		3
 #define VP_DEFAULT_WIN		2
