drm/i915: Introduce g4x_hdmi.c

Extract the g4x+ HDMI low level code to its own file,
leaving intel_hdmi.c to deal with higher level issues.

The infoframe support I decided to leave in intel_hdmi.c
since I think we need to move that as a whole to its own file.
It is after all used also for DP SDPs, so no longer HDMI
specific.
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210318161015.22070-7-ville.syrjala@linux.intel.com

drivers/gpu/drm/i915/Makefile

@@ -241,6 +241,7 @@ i915-y += \
 	display/dvo_sil164.o \
 	display/dvo_tfp410.o \
 	display/g4x_dp.o \
+	display/g4x_hdmi.o \
 	display/icl_dsi.o \
 	display/intel_crt.o \
 	display/intel_ddi.o \

drivers/gpu/drm/i915/display/g4x_hdmi.h

+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#ifndef _G4X_HDMI_H_
+#define _G4X_HDMI_H_
+
+#include <linux/types.h>
+
+#include "i915_reg.h"
+
+enum port;
+struct drm_i915_private;
+
+void intel_hdmi_init(struct drm_i915_private *dev_priv,
+		     i915_reg_t hdmi_reg, enum port port);
+
+#endif

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

@@ -67,6 +67,7 @@
 #include "gt/intel_rps.h"
 
 #include "g4x_dp.h"
+#include "g4x_hdmi.h"
 #include "i915_drv.h"
 #include "intel_acpi.h"
 #include "intel_atomic.h"

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

@@ -1770,6 +1770,18 @@ intel_attached_dig_port(struct intel_connector *connector)
 	return enc_to_dig_port(intel_attached_encoder(connector));
 }
 
+static inline struct intel_hdmi *
+enc_to_intel_hdmi(struct intel_encoder *encoder)
+{
+	return &enc_to_dig_port(encoder)->hdmi;
+}
+
+static inline struct intel_hdmi *
+intel_attached_hdmi(struct intel_connector *connector)
+{
+	return enc_to_intel_hdmi(intel_attached_encoder(connector));
+}
+
 static inline struct intel_dp *enc_to_intel_dp(struct intel_encoder *encoder)
 {
 	return &enc_to_dig_port(encoder)->dp;

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

@@ -23,11 +23,8 @@ struct drm_connector_state;
 union hdmi_infoframe;
 enum port;
 
-void intel_hdmi_init(struct drm_i915_private *dev_priv, i915_reg_t hdmi_reg,
-		     enum port port);
 void intel_hdmi_init_connector(struct intel_digital_port *dig_port,
 			       struct intel_connector *intel_connector);
-struct intel_hdmi *enc_to_intel_hdmi(struct intel_encoder *encoder);
 int intel_hdmi_compute_config(struct intel_encoder *encoder,
 			      struct intel_crtc_state *pipe_config,
 			      struct drm_connector_state *conn_state);