[PATCH v8 2/2] drm/i915/display: Set Context Latency at least 1 for psr1/psr2 during vrr

[Hogander, Jouni]

On Tue, 2024-07-02 at 11:26 +0530, Animesh Manna wrote:
> Bspec: 71956
> 
> The SCL window (i.e. Window 2) must be non-zero if using
> VRR + PSR1/PSR2/PR.

I don't see any reason to have this as a separate patch. Squash to
previous and modify subject and commit description of the patch.

BR,

Jouni Högander
> 
> Signed-off-by: Animesh Manna <animesh.manna at intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_display.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c
> b/drivers/gpu/drm/i915/display/intel_display.c
> index cdab71f81eaa..05462af6805f 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -3946,12 +3946,12 @@ void intel_crtc_adjust_vblank_delay(struct
> intel_crtc_state *crtc_state,
>         /*
>          * wa_14015401596 for display versions 13, 14.
>          * Program Set Context Latency in TRANS_SET_CONTEXT_LATENCY
> register
> -        * to at least a value of 1 when Panel Replay is enabled with
> VRR.
> +        * to at least a value of 1 when PSR1/PSR2/Panel Replay is
> enabled with VRR.
>          * Value for TRANS_SET_CONTEXT_LATENCY is calculated by
> substracting
>          * crtc_vdisplay from crtc_vblank_start, so incrementing
> crtc_vblank_start
>          * by 1 if both are equal.
>          */
> -       if (crtc_state->vrr.enable && crtc_state->has_panel_replay &&
> +       if (crtc_state->vrr.enable && crtc_state->has_psr &&
>             adjusted_mode->crtc_vblank_start == adjusted_mode-
> >crtc_vdisplay &&
>             IS_DISPLAY_VER(to_i915(crtc->base.dev), 13, 14))
>                 adjusted_mode->crtc_vblank_start += 1;