[PATCH v5 8/8] drm/i915/dp: Write the source OUI for non-eDP sinks as well

[Ville Syrjälä]

On Fri, Oct 25, 2024 at 07:02:59PM +0300, Imre Deak wrote:
> At least the i-tec USB-C Nano 2x Display Docking Station (containing a
> Synaptics MST branch device) requires the driver to update the source
> OUI DPCD registers to expose its DSC capability. Accordingly update the
> OUI for all sink types (besides eDP where this has been done already).
> 
> v2: Rebased on latest patch version.
> 
> Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/11776
> Signed-off-by: Imre Deak <imre.deak at intel.com>

Reviewed-by: Ville Syrjälä <ville.syrjala at linux.intel.com>

> ---
>  drivers/gpu/drm/i915/display/intel_dp.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index 916301aa9f6b6..24daf5f973770 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -3407,9 +3407,6 @@ intel_dp_init_source_oui(struct intel_dp *intel_dp)
>  	u8 oui[] = { 0x00, 0xaa, 0x01 };
>  	u8 buf[3] = {};
>  
> -	if (!intel_dp_is_edp(intel_dp))
> -		return;
> -
>  	if (READ_ONCE(intel_dp->oui_valid))
>  		return;
>  
> @@ -6133,6 +6130,8 @@ intel_dp_hpd_pulse(struct intel_digital_port *dig_port, bool long_hpd)
>  
>  	if (long_hpd) {
>  		intel_dp->reset_link_params = true;
> +		intel_dp_invalidate_source_oui(intel_dp);
> +
>  		return IRQ_NONE;
>  	}
>  
> -- 
> 2.44.2

-- 
Ville Syrjälä
Intel