drm/i915/hdcp: add intel_dp_hdcp.h and rename init accordingly

Add separate intel_dp_hdcp.h to go with intel_dp_hdcp.c, and rename the
init function intel_dp_hdcp_init() to follow naming where function
prefix matches the file name.
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210427114520.4740-1-jani.nikula@intel.com

drivers/gpu/drm/i915/display/intel_dp.c

@@ -49,10 +49,11 @@
 #include "intel_display_types.h"
 #include "intel_dp.h"
 #include "intel_dp_aux.h"
+#include "intel_dp_hdcp.h"
 #include "intel_dp_link_training.h"
 #include "intel_dp_mst.h"
-#include "intel_dpll.h"
 #include "intel_dpio_phy.h"
+#include "intel_dpll.h"
 #include "intel_fifo_underrun.h"
 #include "intel_hdcp.h"
 #include "intel_hdmi.h"
@@ -5348,7 +5349,7 @@ intel_dp_init_connector(struct intel_digital_port *dig_port,
 	intel_dp_add_properties(intel_dp, connector);
 
 	if (is_hdcp_supported(dev_priv, port) && !intel_dp_is_edp(intel_dp)) {
-		int ret = intel_dp_init_hdcp(dig_port, intel_connector);
+		int ret = intel_dp_hdcp_init(dig_port, intel_connector);
 		if (ret)
 			drm_dbg_kms(&dev_priv->drm,
 				    "HDCP init failed, skipping.\n");

drivers/gpu/drm/i915/display/intel_dp.h

@@ -119,9 +119,6 @@ void intel_ddi_update_pipe(struct intel_atomic_state *state,
 			   const struct intel_crtc_state *crtc_state,
 			   const struct drm_connector_state *conn_state);
 
-int intel_dp_init_hdcp(struct intel_digital_port *dig_port,
-		       struct intel_connector *intel_connector);
-
 bool intel_dp_initial_fastset_check(struct intel_encoder *encoder,
 				    struct intel_crtc_state *crtc_state);
 void intel_dp_sync_state(struct intel_encoder *encoder,

drivers/gpu/drm/i915/display/intel_dp_hdcp.c

@@ -11,9 +11,10 @@
 #include <drm/drm_hdcp.h>
 #include <drm/drm_print.h>
 
-#include "intel_display_types.h"
 #include "intel_ddi.h"
+#include "intel_display_types.h"
 #include "intel_dp.h"
+#include "intel_dp_hdcp.h"
 #include "intel_hdcp.h"
 
 static unsigned int transcoder_to_stream_enc_status(enum transcoder cpu_transcoder)
@@ -835,7 +836,7 @@ static const struct intel_hdcp_shim intel_dp_mst_hdcp_shim = {
 	.protocol = HDCP_PROTOCOL_DP,
 };
 
-int intel_dp_init_hdcp(struct intel_digital_port *dig_port,
+int intel_dp_hdcp_init(struct intel_digital_port *dig_port,
 		       struct intel_connector *intel_connector)
 {
 	struct drm_device *dev = intel_connector->base.dev;

drivers/gpu/drm/i915/display/intel_dp_hdcp.h

+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#ifndef __INTEL_DP_HDCP___
+#define __INTEL_DP_HDCP___
+
+struct intel_connector;
+struct intel_digital_port;
+
+int intel_dp_hdcp_init(struct intel_digital_port *dig_port,
+		       struct intel_connector *intel_connector);
+
+#endif /* __INTEL_DP_HDCP___ */

drivers/gpu/drm/i915/display/intel_dp_mst.c

@@ -34,11 +34,12 @@
 #include "intel_connector.h"
 #include "intel_ddi.h"
 #include "intel_display_types.h"
-#include "intel_hotplug.h"
 #include "intel_dp.h"
+#include "intel_dp_hdcp.h"
 #include "intel_dp_mst.h"
 #include "intel_dpio_phy.h"
 #include "intel_hdcp.h"
+#include "intel_hotplug.h"
 #include "skl_scaler.h"
 
 static int intel_dp_mst_compute_link_config(struct intel_encoder *encoder,
@@ -832,7 +833,7 @@ static struct drm_connector *intel_dp_add_mst_connector(struct drm_dp_mst_topolo
 	intel_attach_broadcast_rgb_property(connector);
 
 	if (DISPLAY_VER(dev_priv) <= 12) {
-		ret = intel_dp_init_hdcp(dig_port, intel_connector);
+		ret = intel_dp_hdcp_init(dig_port, intel_connector);
 		if (ret)
 			drm_dbg_kms(&dev_priv->drm, "[%s:%d] HDCP MST init failed, skipping.\n",
 				    connector->name, connector->base.id);