[PATCH 06/19] drm/i915/tc: Use the cached max lane count value

[Imre Deak]

Use the PHY's cached max lane count value on all platforms similarly to
LNL+. On LNL+ using the cached value is mandatory - since the
corresponding HW register field can get cleared by the time the value is
queried - on earlier platforms there isn't a problem with using the HW
register instead. Having a uniform way to query the value still makes
sense and it's also a bit more efficient, so do that.

Signed-off-by: Imre Deak <imre.d...@intel.com>
---
 drivers/gpu/drm/i915/display/intel_tc.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_tc.c 
b/drivers/gpu/drm/i915/display/intel_tc.c
index dec54cb0c8c63..d89c174bcb836 100644
--- a/drivers/gpu/drm/i915/display/intel_tc.c
+++ b/drivers/gpu/drm/i915/display/intel_tc.c
@@ -395,15 +395,11 @@ static void read_pin_configuration(struct intel_tc_port 
*tc)
 
 int intel_tc_port_max_lane_count(struct intel_digital_port *dig_port)
 {
-       struct intel_display *display = to_intel_display(dig_port);
        struct intel_tc_port *tc = to_tc_port(dig_port);
 
        if (!intel_encoder_is_tc(&dig_port->base))
                return 4;
 
-       if (DISPLAY_VER(display) < 20)
-               return get_max_lane_count(tc);
-
        return tc->max_lane_count;
 }
 
-- 
2.49.1