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drm/i915/tc: Check for TC PHY explicitly in intel_tc_port_fia_max_lane_count()

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Check explicitly if the port passed to
intel_tc_port_fia_max_lane_count() has a TC PHY, instead of relying on
the default TC mode value set for non-TC PHY ports.

Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230323142035.1432621-7-imre.deak@intel.com
This commit is contained in:
Imre Deak 2023-03-23 16:20:12 +02:00
parent 3eafcddf76
commit 711762415d
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/i915/display/intel_tc.c
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@ -188,10 +188,11 @@ int intel_tc_port_fia_max_lane_count(struct intel_digital_port *dig_port)
{
struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
struct intel_tc_port *tc = to_tc_port(dig_port);
enum phy phy = intel_port_to_phy(i915, dig_port->base.port);
intel_wakeref_t wakeref;
u32 lane_mask;
if (tc->mode != TC_PORT_DP_ALT)
if (!intel_phy_is_tc(i915, phy) || tc->mode != TC_PORT_DP_ALT)
return 4;
assert_tc_cold_blocked(tc);