diff --git a/drivers/gpu/drm/i915/Makefile.header-test b/drivers/gpu/drm/i915/Makefile.header-test
index aed6734785de..03b33f0c2a41 100644
--- a/drivers/gpu/drm/i915/Makefile.header-test
+++ b/drivers/gpu/drm/i915/Makefile.header-test
@@ -39,6 +39,7 @@ header_test := \
 	intel_hotplug.h \
 	intel_lspcon.h \
 	intel_lvds.h \
+	intel_overlay.h \
 	intel_panel.h \
 	intel_pipe_crc.h \
 	intel_pm.h \
diff --git a/drivers/gpu/drm/i915/gt/intel_reset.c b/drivers/gpu/drm/i915/gt/intel_reset.c
index 7605516c837a..419b3415370b 100644
--- a/drivers/gpu/drm/i915/gt/intel_reset.c
+++ b/drivers/gpu/drm/i915/gt/intel_reset.c
@@ -15,6 +15,7 @@
 #include "intel_reset.h"
 
 #include "intel_guc.h"
+#include "intel_overlay.h"
 
 #define RESET_MAX_RETRIES 3
 
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index b891a6aa7980..21dac5a09fbe 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -64,6 +64,7 @@
 #include "intel_drv.h"
 #include "intel_fbdev.h"
 #include "intel_hotplug.h"
+#include "intel_overlay.h"
 #include "intel_pm.h"
 #include "intel_sprite.h"
 #include "intel_uc.h"
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index f0cbd6b82321..c0c0e250b71e 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -3320,12 +3320,6 @@ void intel_dsc_disable(const struct intel_crtc_state *crtc_state);
 int i915_reg_read_ioctl(struct drm_device *dev, void *data,
 			struct drm_file *file);
 
-/* overlay */
-extern struct intel_overlay_error_state *
-intel_overlay_capture_error_state(struct drm_i915_private *dev_priv);
-extern void intel_overlay_print_error_state(struct drm_i915_error_state_buf *e,
-					    struct intel_overlay_error_state *error);
-
 extern struct intel_display_error_state *
 intel_display_capture_error_state(struct drm_i915_private *dev_priv);
 extern void intel_display_print_error_state(struct drm_i915_error_state_buf *e,
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index f51ff683dd2e..e3263608d0d3 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -36,8 +36,9 @@
 
 #include <drm/drm_print.h>
 
-#include "i915_gpu_error.h"
 #include "i915_drv.h"
+#include "i915_gpu_error.h"
+#include "intel_overlay.h"
 
 static inline const struct intel_engine_cs *
 engine_lookup(const struct drm_i915_private *i915, unsigned int id)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index ca36b379aac4..af6f4bc2ceb9 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -64,6 +64,7 @@
 #include "intel_hdmi.h"
 #include "intel_hotplug.h"
 #include "intel_lvds.h"
+#include "intel_overlay.h"
 #include "intel_pipe_crc.h"
 #include "intel_pm.h"
 #include "intel_psr.h"
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index b2cdd723cfc2..178069934914 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1779,16 +1779,6 @@ void intel_dp_mst_encoder_cleanup(struct intel_digital_port *intel_dig_port);
 /* intel_dsi_dcs_backlight.c */
 int intel_dsi_dcs_init_backlight_funcs(struct intel_connector *intel_connector);
 
-/* intel_overlay.c */
-void intel_overlay_setup(struct drm_i915_private *dev_priv);
-void intel_overlay_cleanup(struct drm_i915_private *dev_priv);
-int intel_overlay_switch_off(struct intel_overlay *overlay);
-int intel_overlay_put_image_ioctl(struct drm_device *dev, void *data,
-				  struct drm_file *file_priv);
-int intel_overlay_attrs_ioctl(struct drm_device *dev, void *data,
-			      struct drm_file *file_priv);
-void intel_overlay_reset(struct drm_i915_private *dev_priv);
-
 /* intel_runtime_pm.c */
 void intel_runtime_pm_init_early(struct drm_i915_private *dev_priv);
 int intel_power_domains_init(struct drm_i915_private *);
diff --git a/drivers/gpu/drm/i915/intel_overlay.c b/drivers/gpu/drm/i915/intel_overlay.c
index 5c496b11ab5c..b64b45d9b538 100644
--- a/drivers/gpu/drm/i915/intel_overlay.c
+++ b/drivers/gpu/drm/i915/intel_overlay.c
@@ -25,13 +25,15 @@
  *
  * Derived from Xorg ddx, xf86-video-intel, src/i830_video.c
  */
-#include <drm/i915_drm.h>
+
 #include <drm/drm_fourcc.h>
+#include <drm/i915_drm.h>
 
 #include "i915_drv.h"
 #include "i915_reg.h"
 #include "intel_drv.h"
 #include "intel_frontbuffer.h"
+#include "intel_overlay.h"
 
 /* Limits for overlay size. According to intel doc, the real limits are:
  * Y width: 4095, UV width (planar): 2047, Y height: 2047,
diff --git a/drivers/gpu/drm/i915/intel_overlay.h b/drivers/gpu/drm/i915/intel_overlay.h
new file mode 100644
index 000000000000..a167c28acd27
--- /dev/null
+++ b/drivers/gpu/drm/i915/intel_overlay.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_OVERLAY_H__
+#define __INTEL_OVERLAY_H__
+
+struct drm_device;
+struct drm_file;
+struct drm_i915_error_state_buf;
+struct drm_i915_private;
+struct intel_overlay;
+struct intel_overlay_error_state;
+
+void intel_overlay_setup(struct drm_i915_private *dev_priv);
+void intel_overlay_cleanup(struct drm_i915_private *dev_priv);
+int intel_overlay_switch_off(struct intel_overlay *overlay);
+int intel_overlay_put_image_ioctl(struct drm_device *dev, void *data,
+				  struct drm_file *file_priv);
+int intel_overlay_attrs_ioctl(struct drm_device *dev, void *data,
+			      struct drm_file *file_priv);
+void intel_overlay_reset(struct drm_i915_private *dev_priv);
+struct intel_overlay_error_state *
+intel_overlay_capture_error_state(struct drm_i915_private *dev_priv);
+void intel_overlay_print_error_state(struct drm_i915_error_state_buf *e,
+				     struct intel_overlay_error_state *error);
+
+#endif /* __INTEL_OVERLAY_H__ */