From: Matt Atwood <matthew.s.atwood@intel.com>
Date: Thu, 2 Jul 2020 23:09:57 +0000 (-0700)
Subject: Revert "drm/i915/dp: Correctly advertise HBR3 for GEN11+"
X-Git-Tag: v5.15~3115^2~7^2~68
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d3913019602e32ef6fbba8eb0167e83250cdab22;p=platform%2Fkernel%2Flinux-starfive.git

Revert "drm/i915/dp: Correctly advertise HBR3 for GEN11+"

The initial CI results did not include a TGL system which includes a
panel that is having issues with patch. Revert while we triage.

This reverts commit 680c45c767f63e35f063d3ea04f388a9f7ae7079.

Signed-off-by: Matt Atwood <matthew.s.atwood@intel.com>
Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200702230957.30536-1-matthew.s.atwood@intel.com
---

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index a5ab405..d6295eb 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -137,8 +137,6 @@ static const u8 valid_dsc_slicecount[] = {1, 2, 4};
  *
  * If a CPU or PCH DP output is attached to an eDP panel, this function
  * will return true, and false otherwise.
- *
- * This function is not safe to use prior to encoder type being set.
  */
 bool intel_dp_is_edp(struct intel_dp *intel_dp)
 {
@@ -8159,6 +8157,8 @@ intel_dp_init_connector(struct intel_digital_port *dig_port,
 		     intel_encoder->base.name))
 		return false;
 
+	intel_dp_set_source_rates(intel_dp);
+
 	intel_dp->reset_link_params = true;
 	intel_dp->pps_pipe = INVALID_PIPE;
 	intel_dp->active_pipe = INVALID_PIPE;
@@ -8174,22 +8174,28 @@ intel_dp_init_connector(struct intel_digital_port *dig_port,
 		 */
 		drm_WARN_ON(dev, intel_phy_is_tc(dev_priv, phy));
 		type = DRM_MODE_CONNECTOR_eDP;
-		intel_encoder->type = INTEL_OUTPUT_EDP;
-
-		/* eDP only on port B and/or C on vlv/chv */
-		if (drm_WARN_ON(dev, (IS_VALLEYVIEW(dev_priv) ||
-				      IS_CHERRYVIEW(dev_priv)) &&
-				port != PORT_B && port != PORT_C))
-			return false;
 	} else {
 		type = DRM_MODE_CONNECTOR_DisplayPort;
 	}
 
-	intel_dp_set_source_rates(intel_dp);
-
 	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
 		intel_dp->active_pipe = vlv_active_pipe(intel_dp);
 
+	/*
+	 * For eDP we always set the encoder type to INTEL_OUTPUT_EDP, but
+	 * for DP the encoder type can be set by the caller to
+	 * INTEL_OUTPUT_UNKNOWN for DDI, so don't rewrite it.
+	 */
+	if (type == DRM_MODE_CONNECTOR_eDP)
+		intel_encoder->type = INTEL_OUTPUT_EDP;
+
+	/* eDP only on port B and/or C on vlv/chv */
+	if (drm_WARN_ON(dev, (IS_VALLEYVIEW(dev_priv) ||
+			      IS_CHERRYVIEW(dev_priv)) &&
+			intel_dp_is_edp(intel_dp) &&
+			port != PORT_B && port != PORT_C))
+		return false;
+
 	drm_dbg_kms(&dev_priv->drm,
 		    "Adding %s connector on [ENCODER:%d:%s]\n",
 		    type == DRM_MODE_CONNECTOR_eDP ? "eDP" : "DP",