RE: [PATCH 2/4] drm/i915/psr: Enable Panel Replay on sink always when it's supported

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> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Jouni
> Högander
> Sent: Thursday, 9 January 2025 12.36
> To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx; intel-xe@xxxxxxxxxxxxxxxxxxxxx
> Cc: Hogander, Jouni <jouni.hogander@xxxxxxxxx>
> Subject: [PATCH 2/4] drm/i915/psr: Enable Panel Replay on sink always when it's
> supported
> 
> Currently we are configuring Panel Replay on sink when it get's enabled. This
> means we need to do full modeset when enabling Panel Replay. This is required
> as DP specification is saying sink Panel Replay needs to be configured before link
> training. Avoid full modeset by enabling Panel Replay on sink always when it's
> supported by the sink and the source.
> 

Reviewed-by: Mika Kahola <mika.kahola@xxxxxxxxx>

> Signed-off-by: Jouni Högander <jouni.hogander@xxxxxxxxx>
> ---
>  drivers/gpu/drm/i915/display/intel_ddi.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c
> b/drivers/gpu/drm/i915/display/intel_ddi.c
> index 4f9c50996446..b0ea56e166c5 100644
> --- a/drivers/gpu/drm/i915/display/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/display/intel_ddi.c
> @@ -2890,8 +2890,7 @@ static void intel_ddi_pre_enable_dp(struct
> intel_atomic_state *state,
>  					    crtc_state);
> 
>  	/* Panel replay has to be enabled in sink dpcd before link training. */
> -	if (crtc_state->has_panel_replay)
> -		intel_psr_enable_sink(enc_to_intel_dp(encoder), crtc_state);
> +	intel_psr_panel_replay_enable_sink(enc_to_intel_dp(encoder));
> 
>  	if (DISPLAY_VER(display) >= 14)
>  		mtl_ddi_pre_enable_dp(state, encoder, crtc_state, conn_state);
> --
> 2.34.1





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