[PATCH 11/19] drm/i915/tc: Handle pin assignment NONE on all platforms

[Kahola, Mika]

> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces at lists.freedesktop.org> On Behalf Of Imre Deak
> Sent: Tuesday, 5 August 2025 10.37
> To: intel-gfx at lists.freedesktop.org; intel-xe at lists.freedesktop.org
> Subject: [PATCH 11/19] drm/i915/tc: Handle pin assignment NONE on all platforms
> 
> For consistency, handle pin assignment NONE on all platforms similarly to LNL+. On earlier platforms the driver doesn't actually
> see this pin assignment - as it's not valid on a connected DP-alt PHY - however it's a valid HW setting even on those platforms, for
> instance in legacy mode.
> Handle this pin assignment on earlier platforms as well, so that the way to query the pin assignment can be unified by a follow-up
> change.
> 

Reviewed-by: Mika Kahola <mika.kahola at intel.com>

> Signed-off-by: Imre Deak <imre.deak at intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_tc.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_tc.c b/drivers/gpu/drm/i915/display/intel_tc.c
> index 05df252640f46..dcadbf7b3d40d 100644
> --- a/drivers/gpu/drm/i915/display/intel_tc.c
> +++ b/drivers/gpu/drm/i915/display/intel_tc.c
> @@ -334,6 +334,8 @@ static int mtl_tc_port_get_max_lane_count(struct intel_digital_port *dig_port)
>  	pin_assignment = intel_tc_port_get_pin_assignment(dig_port);
> 
>  	switch (pin_assignment) {
> +	case INTEL_TC_PIN_ASSIGNMENT_NONE:
> +		return 0;
>  	default:
>  		MISSING_CASE(pin_assignment);
>  		fallthrough;
> --
> 2.49.1