drm/i915: Introduce hsw_get_buf_trans()

All the other platforms handle the output_type stuff in their
*_get_buf_trans() functions. Do the same for hsw/bdw/skl.
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210608073603.2408-3-ville.syrjala@linux.intel.com

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

@@ -104,12 +104,10 @@ void hsw_prepare_dp_ddi_buffers(struct intel_encoder *encoder,
 	enum port port = encoder->port;
 	const struct hsw_ddi_buf_trans *ddi_translations;
 
-	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG))
-		ddi_translations = hsw_ddi_get_buf_trans_fdi(dev_priv, &n_entries);
-	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP))
-		ddi_translations = hsw_ddi_get_buf_trans_edp(encoder, &n_entries);
-	else
-		ddi_translations = hsw_ddi_get_buf_trans_dp(encoder, &n_entries);
+	ddi_translations = hsw_get_buf_trans(encoder, crtc_state, &n_entries);
+
+	if (drm_WARN_ON_ONCE(&dev_priv->drm, !ddi_translations))
+		return;
 
 	/* If we're boosting the current, set bit 31 of trans1 */
 	if (DISPLAY_VER(dev_priv) == 9 && !IS_BROXTON(dev_priv) &&
@@ -130,6 +128,7 @@ void hsw_prepare_dp_ddi_buffers(struct intel_encoder *encoder,
  * HDMI/DVI use cases.
  */
 static void hsw_prepare_hdmi_ddi_buffers(struct intel_encoder *encoder,
+					 const struct intel_crtc_state *crtc_state,
 					 int level)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
@@ -138,7 +137,7 @@ static void hsw_prepare_hdmi_ddi_buffers(struct intel_encoder *encoder,
 	enum port port = encoder->port;
 	const struct hsw_ddi_buf_trans *ddi_translations;
 
-	ddi_translations = hsw_ddi_get_buf_trans_hdmi(encoder, &n_entries);
+	ddi_translations = hsw_get_buf_trans(encoder, crtc_state,  &n_entries);
 
 	if (drm_WARN_ON_ONCE(&dev_priv->drm, !ddi_translations))
 		return;
@@ -948,12 +947,7 @@ static void skl_ddi_set_iboost(struct intel_encoder *encoder,
 		const struct hsw_ddi_buf_trans *ddi_translations;
 		int n_entries;
 
-		if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
-			ddi_translations = hsw_ddi_get_buf_trans_hdmi(encoder, &n_entries);
-		else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP))
-			ddi_translations = hsw_ddi_get_buf_trans_edp(encoder, &n_entries);
-		else
-			ddi_translations = hsw_ddi_get_buf_trans_dp(encoder, &n_entries);
+		ddi_translations = hsw_get_buf_trans(encoder, crtc_state, &n_entries);
 
 		if (drm_WARN_ON_ONCE(&dev_priv->drm, !ddi_translations))
 			return;
@@ -1027,10 +1021,7 @@ static u8 intel_ddi_dp_voltage_max(struct intel_dp *intel_dp,
 	} else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) {
 		bxt_get_buf_trans(encoder, crtc_state, &n_entries);
 	} else {
-		if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP))
-			hsw_ddi_get_buf_trans_edp(encoder, &n_entries);
-		else
-			hsw_ddi_get_buf_trans_dp(encoder, &n_entries);
+		hsw_get_buf_trans(encoder, crtc_state, &n_entries);
 	}
 
 	if (drm_WARN_ON(&dev_priv->drm, n_entries < 1))
@@ -3147,7 +3138,7 @@ static void intel_enable_ddi_hdmi(struct intel_atomic_state *state,
 	else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv))
 		bxt_ddi_vswing_sequence(encoder, crtc_state, level);
 	else
-		hsw_prepare_hdmi_ddi_buffers(encoder, level);
+		hsw_prepare_hdmi_ddi_buffers(encoder, crtc_state, level);
 
 	if (DISPLAY_VER(dev_priv) == 9 && !IS_BROXTON(dev_priv))
 		skl_ddi_set_iboost(encoder, crtc_state, level);

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

@@ -875,8 +875,8 @@ static int skl_buf_trans_num_entries(enum port port, int n_entries)
 		return min(n_entries, 9);
 }
 
-const struct hsw_ddi_buf_trans *
-hsw_ddi_get_buf_trans_dp(struct intel_encoder *encoder, int *n_entries)
+static const struct hsw_ddi_buf_trans *
+hsw_get_buf_trans_dp(struct intel_encoder *encoder, int *n_entries)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 
@@ -904,8 +904,8 @@ hsw_ddi_get_buf_trans_dp(struct intel_encoder *encoder, int *n_entries)
 	return NULL;
 }
 
-const struct hsw_ddi_buf_trans *
-hsw_ddi_get_buf_trans_edp(struct intel_encoder *encoder, int *n_entries)
+static const struct hsw_ddi_buf_trans *
+hsw_get_buf_trans_edp(struct intel_encoder *encoder, int *n_entries)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 
@@ -925,10 +925,12 @@ hsw_ddi_get_buf_trans_edp(struct intel_encoder *encoder, int *n_entries)
 	return NULL;
 }
 
-const struct hsw_ddi_buf_trans *
-hsw_ddi_get_buf_trans_fdi(struct drm_i915_private *dev_priv,
-			  int *n_entries)
+static const struct hsw_ddi_buf_trans *
+hsw_get_buf_trans_fdi(struct intel_encoder *encoder,
+		      int *n_entries)
 {
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
 	if (IS_BROADWELL(dev_priv)) {
 		*n_entries = ARRAY_SIZE(bdw_ddi_translations_fdi);
 		return bdw_ddi_translations_fdi;
@@ -941,9 +943,9 @@ hsw_ddi_get_buf_trans_fdi(struct drm_i915_private *dev_priv,
 	return NULL;
 }
 
-const struct hsw_ddi_buf_trans *
-hsw_ddi_get_buf_trans_hdmi(struct intel_encoder *encoder,
-			   int *n_entries)
+static const struct hsw_ddi_buf_trans *
+hsw_get_buf_trans_hdmi(struct intel_encoder *encoder,
+		       int *n_entries)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 
@@ -961,6 +963,21 @@ hsw_ddi_get_buf_trans_hdmi(struct intel_encoder *encoder,
 	return NULL;
 }
 
+const struct hsw_ddi_buf_trans *
+hsw_get_buf_trans(struct intel_encoder *encoder,
+		  const struct intel_crtc_state *crtc_state,
+		  int *n_entries)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG))
+		return hsw_get_buf_trans_fdi(encoder, n_entries);
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return hsw_get_buf_trans_hdmi(encoder, n_entries);
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP))
+		return hsw_get_buf_trans_edp(encoder, n_entries);
+	else
+		return hsw_get_buf_trans_dp(encoder, n_entries);
+}
+
 static const struct bxt_ddi_buf_trans *
 bxt_get_buf_trans_dp(struct intel_encoder *encoder, int *n_entries)
 {
@@ -1427,13 +1444,13 @@ int intel_ddi_hdmi_num_entries(struct intel_encoder *encoder,
 		bxt_get_buf_trans_hdmi(encoder, &n_entries);
 		*default_entry = n_entries - 1;
 	} else if (DISPLAY_VER(dev_priv) == 9) {
-		hsw_ddi_get_buf_trans_hdmi(encoder, &n_entries);
+		hsw_get_buf_trans_hdmi(encoder, &n_entries);
 		*default_entry = 8;
 	} else if (IS_BROADWELL(dev_priv)) {
-		hsw_ddi_get_buf_trans_hdmi(encoder, &n_entries);
+		hsw_get_buf_trans_hdmi(encoder, &n_entries);
 		*default_entry = 7;
 	} else if (IS_HASWELL(dev_priv)) {
-		hsw_ddi_get_buf_trans_hdmi(encoder, &n_entries);
+		hsw_get_buf_trans_hdmi(encoder, &n_entries);
 		*default_entry = 6;
 	} else {
 		drm_WARN(&dev_priv->drm, 1, "ddi translation table missing\n");

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

@@ -52,13 +52,9 @@ int intel_ddi_hdmi_num_entries(struct intel_encoder *encoder,
 			       int *default_entry);
 
 const struct hsw_ddi_buf_trans *
-hsw_ddi_get_buf_trans_edp(struct intel_encoder *encoder, int *n_entries);
-const struct hsw_ddi_buf_trans *
-hsw_ddi_get_buf_trans_fdi(struct drm_i915_private *dev_priv, int *n_entries);
-const struct hsw_ddi_buf_trans *
-hsw_ddi_get_buf_trans_hdmi(struct intel_encoder *encoder, int *n_entries);
-const struct hsw_ddi_buf_trans *
-hsw_ddi_get_buf_trans_dp(struct intel_encoder *encoder, int *n_entries);
+hsw_get_buf_trans(struct intel_encoder *encoder,
+		  const struct intel_crtc_state *crtc_state,
+		  int *n_entries);
 
 const struct bxt_ddi_buf_trans *
 bxt_get_buf_trans(struct intel_encoder *encoder,

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

@@ -569,7 +569,7 @@ void hsw_fdi_link_train(struct intel_encoder *encoder,
 	u32 temp, i, rx_ctl_val;
 	int n_entries;
 
-	hsw_ddi_get_buf_trans_fdi(dev_priv, &n_entries);
+	hsw_get_buf_trans(encoder, crtc_state, &n_entries);
 
 	hsw_prepare_dp_ddi_buffers(encoder, crtc_state);