From 4f7dad584fdce914d698233179a1188481789884 Mon Sep 17 00:00:00 2001
From: Imre Deak <imre.deak@intel.com>
Date: Tue, 21 Sep 2021 03:23:02 +0300
Subject: [PATCH] drm/i915/adlp/tc: Fix PHY connected check for Thunderbolt
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On ADL-P the PHY ready (aka status complete on other platforms) flag is
always set, besides when a DP-alt, legacy sink is connected also when a
TBT sink is connected or nothing is connected. So assume the PHY to be
connected when both the TBT live status and PHY ready flags are set.
Cc: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210921002313.1132357-3-imre.deak@intel.com
---
drivers/gpu/drm/i915/display/intel_tc.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_tc.c b/drivers/gpu/drm/i915/display/intel_tc.c
index 3ffece568ed98..7dc3696085c71 100644
--- a/drivers/gpu/drm/i915/display/intel_tc.c
+++ b/drivers/gpu/drm/i915/display/intel_tc.c
@@ -509,6 +509,10 @@ static bool icl_tc_phy_is_connected(struct intel_digital_port *dig_port)
return dig_port->tc_mode == TC_PORT_TBT_ALT;
}
+ /* On ADL-P the PHY complete flag is set in TBT mode as well. */
+ if (IS_ALDERLAKE_P(i915) && dig_port->tc_mode == TC_PORT_TBT_ALT)
+ return true;
+
if (!tc_phy_is_owned(dig_port)) {
drm_dbg_kms(&i915->drm, "Port %s: PHY not owned\n",
dig_port->tc_port_name);
--
2.30.2