diff --git a/drivers/gpu/drm/i915/Makefile.header-test b/drivers/gpu/drm/i915/Makefile.header-test
index e78eeaa8ec33..43c939da9665 100644
--- a/drivers/gpu/drm/i915/Makefile.header-test
+++ b/drivers/gpu/drm/i915/Makefile.header-test
@@ -8,6 +8,7 @@ header_test := \
 	i915_priolist_types.h \
 	i915_scheduler_types.h \
 	i915_timeline_types.h \
+	intel_atomic_plane.h \
 	intel_audio.h \
 	intel_color.h \
 	intel_connector.h \
diff --git a/drivers/gpu/drm/i915/intel_atomic_plane.c b/drivers/gpu/drm/i915/intel_atomic_plane.c
index 42821f8e6031..381234ce1bc4 100644
--- a/drivers/gpu/drm/i915/intel_atomic_plane.c
+++ b/drivers/gpu/drm/i915/intel_atomic_plane.c
@@ -59,6 +59,23 @@ struct intel_plane *intel_plane_alloc(void)
 	return plane;
 }
 
+/**
+ * intel_plane_destroy_state - destroy plane state
+ * @plane: drm plane
+ * @state: state object to destroy
+ *
+ * Destroys the plane state (both common and Intel-specific) for the
+ * specified plane.
+ */
+void
+intel_plane_destroy_state(struct drm_plane *plane,
+			  struct drm_plane_state *state)
+{
+	WARN_ON(to_intel_plane_state(state)->vma);
+
+	drm_atomic_helper_plane_destroy_state(plane, state);
+}
+
 void intel_plane_free(struct intel_plane *plane)
 {
 	intel_plane_destroy_state(&plane->base, plane->base.state);
@@ -95,23 +112,6 @@ intel_plane_duplicate_state(struct drm_plane *plane)
 	return state;
 }
 
-/**
- * intel_plane_destroy_state - destroy plane state
- * @plane: drm plane
- * @state: state object to destroy
- *
- * Destroys the plane state (both common and Intel-specific) for the
- * specified plane.
- */
-void
-intel_plane_destroy_state(struct drm_plane *plane,
-			  struct drm_plane_state *state)
-{
-	WARN_ON(to_intel_plane_state(state)->vma);
-
-	drm_atomic_helper_plane_destroy_state(plane, state);
-}
-
 int intel_plane_atomic_check_with_state(const struct intel_crtc_state *old_crtc_state,
 					struct intel_crtc_state *new_crtc_state,
 					const struct intel_plane_state *old_plane_state,
diff --git a/drivers/gpu/drm/i915/intel_atomic_plane.h b/drivers/gpu/drm/i915/intel_atomic_plane.h
new file mode 100644
index 000000000000..14678620440f
--- /dev/null
+++ b/drivers/gpu/drm/i915/intel_atomic_plane.h
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_ATOMIC_PLANE_H__
+#define __INTEL_ATOMIC_PLANE_H__
+
+struct drm_plane;
+struct intel_atomic_state;
+struct intel_crtc;
+struct intel_crtc_state;
+struct intel_plane;
+struct intel_plane_state;
+
+extern const struct drm_plane_helper_funcs intel_plane_helper_funcs;
+
+void intel_update_plane(struct intel_plane *plane,
+			const struct intel_crtc_state *crtc_state,
+			const struct intel_plane_state *plane_state);
+void intel_update_slave(struct intel_plane *plane,
+			const struct intel_crtc_state *crtc_state,
+			const struct intel_plane_state *plane_state);
+void intel_disable_plane(struct intel_plane *plane,
+			 const struct intel_crtc_state *crtc_state);
+struct intel_plane *intel_plane_alloc(void);
+void intel_plane_free(struct intel_plane *plane);
+struct drm_plane_state *intel_plane_duplicate_state(struct drm_plane *plane);
+void intel_plane_destroy_state(struct drm_plane *plane,
+			       struct drm_plane_state *state);
+void skl_update_planes_on_crtc(struct intel_atomic_state *state,
+			       struct intel_crtc *crtc);
+void i9xx_update_planes_on_crtc(struct intel_atomic_state *state,
+				struct intel_crtc *crtc);
+int intel_plane_atomic_check_with_state(const struct intel_crtc_state *old_crtc_state,
+					struct intel_crtc_state *crtc_state,
+					const struct intel_plane_state *old_plane_state,
+					struct intel_plane_state *intel_state);
+
+#endif /* __INTEL_ATOMIC_PLANE_H__ */
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 472388592951..54ba021ad4ea 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -48,6 +48,7 @@
 #include "i915_gem_clflush.h"
 #include "i915_reset.h"
 #include "i915_trace.h"
+#include "intel_atomic_plane.h"
 #include "intel_color.h"
 #include "intel_crt.h"
 #include "intel_ddi.h"
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index ae5714ef6c11..9b8435f9ccaf 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -2120,30 +2120,6 @@ int intel_atomic_setup_scalers(struct drm_i915_private *dev_priv,
 			       struct intel_crtc *intel_crtc,
 			       struct intel_crtc_state *crtc_state);
 
-/* intel_atomic_plane.c */
-void intel_update_plane(struct intel_plane *plane,
-			const struct intel_crtc_state *crtc_state,
-			const struct intel_plane_state *plane_state);
-void intel_update_slave(struct intel_plane *plane,
-			const struct intel_crtc_state *crtc_state,
-			const struct intel_plane_state *plane_state);
-void intel_disable_plane(struct intel_plane *plane,
-			 const struct intel_crtc_state *crtc_state);
-struct intel_plane *intel_plane_alloc(void);
-void intel_plane_free(struct intel_plane *plane);
-struct drm_plane_state *intel_plane_duplicate_state(struct drm_plane *plane);
-void intel_plane_destroy_state(struct drm_plane *plane,
-			       struct drm_plane_state *state);
-extern const struct drm_plane_helper_funcs intel_plane_helper_funcs;
-void skl_update_planes_on_crtc(struct intel_atomic_state *state,
-			       struct intel_crtc *crtc);
-void i9xx_update_planes_on_crtc(struct intel_atomic_state *state,
-				struct intel_crtc *crtc);
-int intel_plane_atomic_check_with_state(const struct intel_crtc_state *old_crtc_state,
-					struct intel_crtc_state *crtc_state,
-					const struct intel_plane_state *old_plane_state,
-					struct intel_plane_state *intel_state);
-
 /* intel_pipe_crc.c */
 #ifdef CONFIG_DEBUG_FS
 int intel_crtc_set_crc_source(struct drm_crtc *crtc, const char *source_name);
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 0274e70f6034..50ba32eaee9e 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -40,6 +40,7 @@
 #include <drm/i915_drm.h>
 
 #include "i915_drv.h"
+#include "intel_atomic_plane.h"
 #include "intel_drv.h"
 #include "intel_frontbuffer.h"
 #include "intel_pm.h"
