[Intel-gfx] [PATCH 11/17] drm/i915: Introduce rkl_get_combo_buf_trans()

[Ville Syrjala <ville.syrjala@linux.intel.com>]

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

Give RKL its own get_buf_trans() func.

Note that the spec currently only lists values for DP.
Until we get that clarified let's just assume that for
HDMI and eDP we should do what TGL does (except we fall
back to the RKL DP values instead of TGL DP values when
not using the eDP specific values, whereas previously
we used all TGL values for eDP).

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 .../drm/i915/display/intel_ddi_buf_trans.c    | 65 +++++++++++++++----
 1 file changed, 53 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c b/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c
index 1d78640c439e..fd55c812f14a 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c
@@ -1458,10 +1458,7 @@ tgl_get_combo_buf_trans_dp(struct intel_encoder *encoder,
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 
 	if (crtc_state->port_clock > 270000) {
-		if (IS_ROCKETLAKE(dev_priv)) {
-			return intel_get_buf_trans(&rkl_combo_phy_ddi_translations_dp_hbr2_hbr3,
-						   n_entries);
-		} else if (IS_TGL_U(dev_priv) || IS_TGL_Y(dev_priv)) {
+		if (IS_TGL_U(dev_priv) || IS_TGL_Y(dev_priv)) {
 			return intel_get_buf_trans(&tgl_uy_combo_phy_ddi_translations_dp_hbr2,
 						   n_entries);
 		} else {
@@ -1469,13 +1466,8 @@ tgl_get_combo_buf_trans_dp(struct intel_encoder *encoder,
 						   n_entries);
 		}
 	} else {
-		if (IS_ROCKETLAKE(dev_priv)) {
-			return intel_get_buf_trans(&rkl_combo_phy_ddi_translations_dp_hbr,
-						   n_entries);
-		} else {
-			return intel_get_buf_trans(&tgl_combo_phy_ddi_translations_dp_hbr,
-						   n_entries);
-		}
+		return intel_get_buf_trans(&tgl_combo_phy_ddi_translations_dp_hbr,
+					   n_entries);
 	}
 }
 
@@ -1514,6 +1506,53 @@ tgl_get_combo_buf_trans(struct intel_encoder *encoder,
 		return tgl_get_combo_buf_trans_dp(encoder, crtc_state, n_entries);
 }
 
+static const struct intel_ddi_buf_trans *
+rkl_get_combo_buf_trans_dp(struct intel_encoder *encoder,
+			   const struct intel_crtc_state *crtc_state,
+			   int *n_entries)
+{
+	if (crtc_state->port_clock > 270000)
+		return intel_get_buf_trans(&rkl_combo_phy_ddi_translations_dp_hbr2_hbr3, n_entries);
+	else
+		return intel_get_buf_trans(&rkl_combo_phy_ddi_translations_dp_hbr, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+rkl_get_combo_buf_trans_edp(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state,
+			    int *n_entries)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+	if (crtc_state->port_clock > 540000) {
+		return intel_get_buf_trans(&icl_combo_phy_ddi_translations_edp_hbr3,
+					   n_entries);
+	} else if (dev_priv->vbt.edp.hobl && !intel_dp->hobl_failed) {
+		return intel_get_buf_trans(&tgl_combo_phy_ddi_translations_edp_hbr2_hobl,
+					   n_entries);
+	} else if (dev_priv->vbt.edp.low_vswing) {
+		return intel_get_buf_trans(&icl_combo_phy_ddi_translations_edp_hbr2,
+					   n_entries);
+	}
+
+	return rkl_get_combo_buf_trans_dp(encoder, crtc_state, n_entries);
+}
+
+static const struct intel_ddi_buf_trans *
+rkl_get_combo_buf_trans(struct intel_encoder *encoder,
+			const struct intel_crtc_state *crtc_state,
+			int *n_entries)
+{
+	/* FIXME unclear what values we should use for HDMI and eDP */
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return tgl_get_combo_buf_trans_hdmi(encoder, crtc_state, n_entries);
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP))
+		return rkl_get_combo_buf_trans_edp(encoder, crtc_state, n_entries);
+	else
+		return rkl_get_combo_buf_trans_dp(encoder, crtc_state, n_entries);
+}
+
 static const struct intel_ddi_buf_trans *
 tgl_get_dkl_buf_trans_hdmi(struct intel_encoder *encoder,
 			   const struct intel_crtc_state *crtc_state,
@@ -1573,7 +1612,9 @@ void intel_ddi_buf_trans_init(struct intel_encoder *encoder)
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
 	enum phy phy = intel_port_to_phy(i915, encoder->port);
 
-	if (DISPLAY_VER(i915) >= 12) {
+	if (IS_ROCKETLAKE(i915)) {
+		encoder->get_buf_trans = rkl_get_combo_buf_trans;
+	} else if (DISPLAY_VER(i915) >= 12) {
 		if (intel_phy_is_combo(i915, phy))
 			encoder->get_buf_trans = tgl_get_combo_buf_trans;
 		else
-- 
2.26.3

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