[PATCH 20/26] drm/i915: Extract intel_hdmi_has_audio()

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Pull the "do we want to enable audio?" computation into a small helper
to make intel_hdmi_compute_config() less messy. Will make it easier to
add more checks for this later (eg. we should actually be checking
at the hblank is long enough for audio transmission).

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_hdmi.c | 28 +++++++++++++++--------
 1 file changed, 19 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 5991a99c43a8..31fec0050f8d 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2405,6 +2405,23 @@ static bool intel_hdmi_limited_color_range(const struct intel_crtc_state *crtc_s
 	}
 }
 
+static bool intel_hdmi_has_audio(struct intel_encoder *encoder,
+				 const struct intel_crtc_state *crtc_state,
+				 const struct drm_connector_state *conn_state)
+{
+	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
+	const struct intel_digital_connector_state *intel_conn_state =
+		to_intel_digital_connector_state(conn_state);
+
+	if (!crtc_state->has_hdmi_sink)
+		return false;
+
+	if (intel_conn_state->force_audio == HDMI_AUDIO_AUTO)
+		return intel_hdmi->has_audio;
+	else
+		return intel_conn_state->force_audio == HDMI_AUDIO_ON;
+}
+
 int intel_hdmi_compute_config(struct intel_encoder *encoder,
 			      struct intel_crtc_state *pipe_config,
 			      struct drm_connector_state *conn_state)
@@ -2414,8 +2431,6 @@ int intel_hdmi_compute_config(struct intel_encoder *encoder,
 	struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode;
 	struct drm_connector *connector = conn_state->connector;
 	struct drm_scdc *scdc = &connector->display_info.hdmi.scdc;
-	struct intel_digital_connector_state *intel_conn_state =
-		to_intel_digital_connector_state(conn_state);
 	int ret;
 
 	if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
@@ -2444,13 +2459,8 @@ int intel_hdmi_compute_config(struct intel_encoder *encoder,
 	if (HAS_PCH_SPLIT(dev_priv) && !HAS_DDI(dev_priv))
 		pipe_config->has_pch_encoder = true;
 
-	if (pipe_config->has_hdmi_sink) {
-		if (intel_conn_state->force_audio == HDMI_AUDIO_AUTO)
-			pipe_config->has_audio = intel_hdmi->has_audio;
-		else
-			pipe_config->has_audio =
-				intel_conn_state->force_audio == HDMI_AUDIO_ON;
-	}
+	pipe_config->has_audio =
+		intel_hdmi_has_audio(encoder, pipe_config, conn_state);
 
 	ret = intel_hdmi_compute_clock(encoder, pipe_config);
 	if (ret)
-- 
2.24.1