drm/i915: Nuke intel_ddi_hdmi_num_entries()

Since intel_ddi_level() now looks at the buf_trans table there's
no point in having intel_ddi_hdmi_num_entries() around. Just
roll the necessary bits of locic into
intel_ddi_hdmi_level()/intel_ddi_level().
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211001130107.1746-8-ville.syrjala@linux.intel.com

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

@@ -74,20 +74,13 @@ static const u8 index_to_dp_signal_levels[] = {
 };
 
 static int intel_ddi_hdmi_level(struct intel_encoder *encoder,
-				const struct intel_crtc_state *crtc_state)
+				const struct intel_ddi_buf_trans *trans)
 {
-	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
-	int n_entries, level, default_entry;
+	int level;
 
-	n_entries = intel_ddi_hdmi_num_entries(encoder, crtc_state, &default_entry);
-	if (n_entries == 0)
-		return 0;
 	level = intel_bios_hdmi_level_shift(encoder);
 	if (level < 0)
-		level = default_entry;
-
-	if (drm_WARN_ON_ONCE(&dev_priv->drm, level >= n_entries))
-		level = n_entries - 1;
+		level = trans->hdmi_default_entry;
 
 	return level;
 }
@@ -142,7 +135,7 @@ static void hsw_prepare_hdmi_ddi_buffers(struct intel_encoder *encoder,
 					 const struct intel_crtc_state *crtc_state)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
-	int level = intel_ddi_hdmi_level(encoder, crtc_state);
+	int level = intel_ddi_level(encoder, crtc_state);
 	u32 iboost_bit = 0;
 	int n_entries;
 	enum port port = encoder->port;
@@ -1366,7 +1359,7 @@ int intel_ddi_level(struct intel_encoder *encoder,
 		return 0;
 
 	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
-		level = intel_ddi_hdmi_level(encoder, crtc_state);
+		level = intel_ddi_hdmi_level(encoder, trans);
 	else
 		level = intel_ddi_dp_level(enc_to_intel_dp(encoder));
 

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

@@ -1617,26 +1617,6 @@ dg2_get_snps_buf_trans(struct intel_encoder *encoder,
 		return intel_get_buf_trans(&dg2_snps_trans, n_entries);
 }
 
-int intel_ddi_hdmi_num_entries(struct intel_encoder *encoder,
-			       const struct intel_crtc_state *crtc_state,
-			       int *default_entry)
-{
-	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
-	const struct intel_ddi_buf_trans *trans;
-	int n_entries;
-
-	trans = encoder->get_buf_trans(encoder, crtc_state, &n_entries);
-
-	if (drm_WARN_ON(&dev_priv->drm, !trans)) {
-		*default_entry = 0;
-		return 0;
-	}
-
-	*default_entry = trans->hdmi_default_entry;
-
-	return n_entries;
-}
-
 void intel_ddi_buf_trans_init(struct intel_encoder *encoder)
 {
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);

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

@@ -68,10 +68,6 @@ struct intel_ddi_buf_trans {
 
 bool is_hobl_buf_trans(const struct intel_ddi_buf_trans *table);
 
-int intel_ddi_hdmi_num_entries(struct intel_encoder *encoder,
-			       const struct intel_crtc_state *crtc_state,
-			       int *default_entry);
-
 void intel_ddi_buf_trans_init(struct intel_encoder *encoder);
 
 #endif