[PATCH 4/6] drm/i915/ptl+: Add TypeC HPD pin selection for port B

[Imre Deak <imre.deak@intel.com>]

Handle the TypeC PHY on port B case while mapping the port to an HPD
pin. This prepares for an upcoming change that will set port B's PHY
type to TypeC on PTL+ platforms with an eDP panel connected to a TypeC
PHY.

Keep the existing port >= PORT_TC1 case and its HPD pin mapping for
DG2, where PORT_TC1 has a non-TypeC PHY.

CC: stable@vger.kernel.org # 6.14+
Signed-off-by: Imre Deak <imre.deak@intel.com>
---
 drivers/gpu/drm/i915/display/intel_ddi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index dda95709c7c73..5950246e45a06 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -5053,6 +5053,8 @@ static enum hpd_pin xelpd_hpd_pin(struct intel_display *display, enum port port)
 		return HPD_PORT_D + port - PORT_D_XELPD;
 	else if (port >= PORT_TC1)
 		return HPD_PORT_TC1 + port - PORT_TC1;
+	else if (intel_phy_is_tc(display, intel_port_to_phy(display, port)))
+		return HPD_PORT_TC1 + intel_port_to_tc(display, port) - TC_PORT_1;
 	else
 		return HPD_PORT_A + port - PORT_A;
 }
-- 
2.49.1