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dmc/i915/tc: Report pin assignment NONE in TBT-alt mode

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The pin assignment is only relevant in case the PHY is owned by the
display, that is in legacy and DP-alt mode. In TBT-alt mode the PHY is
owned by the TBT FW/driver and so the pin assignment/configuration is
managed by those components. A follow-up change will cache the pin
assignment value in all the TypeC modes - querying this by calling
get_pin_assignment() - prepare for that here, by reporting pin
assignment NONE in the TBT-alt mode.

Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Link: https://lore.kernel.org/r/20250805073700.642107-18-imre.deak@intel.com
Signed-off-by: Imre Deak <imre.deak@intel.com>
This commit is contained in:
Imre Deak 2025-08-05 10:36:58 +03:00
parent 76ed3b0226
commit cca7c083a3
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/i915/display/intel_tc.c
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@ -287,6 +287,9 @@ get_pin_assignment(struct intel_tc_port *tc)
u32 mask;
u32 val;
if (tc->mode == TC_PORT_TBT_ALT)
return INTEL_TC_PIN_ASSIGNMENT_NONE;
if (DISPLAY_VER(display) >= 20) {
reg = TCSS_DDI_STATUS(tc_port);
mask = TCSS_DDI_STATUS_PIN_ASSIGNMENT_MASK;