drm/i915: Move has_hdmi_sink out from intel_hdmi_compute_config()

We'll be wanting to compute has_hdmi_sink a bit differently
for some platforms. To that end compute it in the encoder
.compute_config_hook() before we call intel_hdmi_compute_config().
intel_hdmi_compute_has_hdmi_sink() will do the basic lifting
beyond any platform specific stuff.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221107194604.15227-5-ville.syrjala@linux.intel.comReviewed-by: Jani Nikula <jani.nikula@intel.com>

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

@@ -89,6 +89,9 @@ static int g4x_hdmi_compute_config(struct intel_encoder *encoder,
 	if (HAS_PCH_SPLIT(i915))
 		crtc_state->has_pch_encoder = true;
 
+	crtc_state->has_hdmi_sink =
+		intel_hdmi_compute_has_hdmi_sink(encoder, crtc_state, conn_state);
+
 	return intel_hdmi_compute_config(encoder, crtc_state, conn_state);
 }
 

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

@@ -4063,6 +4063,9 @@ static int intel_ddi_compute_config(struct intel_encoder *encoder,
 		pipe_config->cpu_transcoder = TRANSCODER_EDP;
 
 	if (intel_crtc_has_type(pipe_config, INTEL_OUTPUT_HDMI)) {
+		pipe_config->has_hdmi_sink =
+			intel_hdmi_compute_has_hdmi_sink(encoder, pipe_config, conn_state);
+
 		ret = intel_hdmi_compute_config(encoder, pipe_config, conn_state);
 	} else {
 		ret = intel_dp_compute_config(encoder, pipe_config, conn_state);

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

@@ -2264,11 +2264,20 @@ static bool source_supports_scrambling(struct intel_encoder *encoder)
 	return intel_hdmi_source_max_tmds_clock(encoder) > 340000;
 }
 
+bool intel_hdmi_compute_has_hdmi_sink(struct intel_encoder *encoder,
+				      const struct intel_crtc_state *crtc_state,
+				      const struct drm_connector_state *conn_state)
+{
+	struct intel_hdmi *hdmi = enc_to_intel_hdmi(encoder);
+
+	return intel_has_hdmi_sink(hdmi, conn_state) &&
+		!intel_hdmi_is_cloned(crtc_state);
+}
+
 int intel_hdmi_compute_config(struct intel_encoder *encoder,
 			      struct intel_crtc_state *pipe_config,
 			      struct drm_connector_state *conn_state)
 {
-	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 	struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode;
 	struct drm_connector *connector = conn_state->connector;
@@ -2283,9 +2292,6 @@ int intel_hdmi_compute_config(struct intel_encoder *encoder,
 		return -EINVAL;
 
 	pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
-	pipe_config->has_hdmi_sink =
-		intel_has_hdmi_sink(intel_hdmi, conn_state) &&
-		!intel_hdmi_is_cloned(pipe_config);
 
 	if (pipe_config->has_hdmi_sink)
 		pipe_config->has_infoframe = true;

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

@@ -24,6 +24,9 @@ union hdmi_infoframe;
 
 void intel_hdmi_init_connector(struct intel_digital_port *dig_port,
 			       struct intel_connector *intel_connector);
+bool intel_hdmi_compute_has_hdmi_sink(struct intel_encoder *encoder,
+				      const struct intel_crtc_state *crtc_state,
+				      const struct drm_connector_state *conn_state);
 int intel_hdmi_compute_config(struct intel_encoder *encoder,
 			      struct intel_crtc_state *pipe_config,
 			      struct drm_connector_state *conn_state);