diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index e44c72533a8c..660bb03de6fc 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -51,7 +51,7 @@ i915-y += i915_drv.o \
 	  intel_pm.o \
 	  intel_region_ttm.o \
 	  intel_runtime_pm.o \
-	  intel_sideband.o \
+	  intel_sbi.o \
 	  intel_step.o \
 	  intel_uncore.o \
 	  intel_wakeref.o \
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index b070cdcb3674..ff598b6cd953 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -103,7 +103,7 @@
 #include "intel_pps.h"
 #include "intel_psr.h"
 #include "intel_quirks.h"
-#include "intel_sideband.h"
+#include "intel_sbi.h"
 #include "intel_sprite.h"
 #include "intel_tc.h"
 #include "intel_vga.h"
diff --git a/drivers/gpu/drm/i915/display/intel_fdi.c b/drivers/gpu/drm/i915/display/intel_fdi.c
index 51d6f810e69b..dd2cf0c59921 100644
--- a/drivers/gpu/drm/i915/display/intel_fdi.c
+++ b/drivers/gpu/drm/i915/display/intel_fdi.c
@@ -8,7 +8,7 @@
 #include "intel_de.h"
 #include "intel_display_types.h"
 #include "intel_fdi.h"
-#include "intel_sideband.h"
+#include "intel_sbi.h"
 
 static void assert_fdi_tx(struct drm_i915_private *dev_priv,
 			  enum pipe pipe, bool state)
diff --git a/drivers/gpu/drm/i915/intel_sideband.c b/drivers/gpu/drm/i915/intel_sbi.c
similarity index 56%
rename from drivers/gpu/drm/i915/intel_sideband.c
rename to drivers/gpu/drm/i915/intel_sbi.c
index 1d30273b35c1..5ba8490a31e6 100644
--- a/drivers/gpu/drm/i915/intel_sideband.c
+++ b/drivers/gpu/drm/i915/intel_sbi.c
@@ -1,31 +1,12 @@
+// SPDX-License-Identifier: MIT
 /*
- * Copyright © 2013 Intel Corporation
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
+ * Copyright © 2013-2021 Intel Corporation
  *
+ * LPT/WPT IOSF sideband.
  */
 
-#include <asm/iosf_mbi.h>
-
 #include "i915_drv.h"
-#include "intel_sideband.h"
+#include "intel_sbi.h"
 
 /* SBI access */
 static int intel_sbi_rw(struct drm_i915_private *i915, u16 reg,
diff --git a/drivers/gpu/drm/i915/intel_sideband.h b/drivers/gpu/drm/i915/intel_sbi.h
similarity index 75%
rename from drivers/gpu/drm/i915/intel_sideband.h
rename to drivers/gpu/drm/i915/intel_sbi.h
index 9d937576f507..f5a862210454 100644
--- a/drivers/gpu/drm/i915/intel_sideband.h
+++ b/drivers/gpu/drm/i915/intel_sbi.h
@@ -1,7 +1,10 @@
 /* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2013-2021 Intel Corporation
+ */
 
-#ifndef _INTEL_SIDEBAND_H_
-#define _INTEL_SIDEBAND_H_
+#ifndef _INTEL_SBI_H_
+#define _INTEL_SBI_H_
 
 #include <linux/types.h>
 
@@ -17,4 +20,4 @@ u32 intel_sbi_read(struct drm_i915_private *i915, u16 reg,
 void intel_sbi_write(struct drm_i915_private *i915, u16 reg, u32 value,
 		     enum intel_sbi_destination destination);
 
-#endif /* _INTEL_SIDEBAND_H */
+#endif /* _INTEL_SBI_H_ */