On Mon, Mar 30, 2026 at 09:36:44AM +0530, Ankit Nautiyal wrote:
> Currently the intel_dp_sdp_min_guardband() accounts for AS_SDP for all
> platforms that support adaptive sync SDP even for configurations where
> it cannot be enabled. Instead account for adaptive sync SDP guardband
> only when it is enabled.
> 
> Signed-off-by: Ankit Nautiyal <[email protected]>

Reviewed-by: Ville Syrjälä <[email protected]>

> ---
>  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 49eeb35973a1..499850c2abcf 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -7374,7 +7374,6 @@ int intel_dp_get_lines_for_sdp(const struct 
> intel_crtc_state *crtc_state, u32 ty
>  int intel_dp_sdp_min_guardband(const struct intel_crtc_state *crtc_state,
>                              bool assume_all_enabled)
>  {
> -     struct intel_display *display = to_intel_display(crtc_state);
>       int sdp_guardband = 0;
>  
>       if (assume_all_enabled ||
> @@ -7389,8 +7388,8 @@ int intel_dp_sdp_min_guardband(const struct 
> intel_crtc_state *crtc_state,
>               sdp_guardband = max(sdp_guardband,
>                                   intel_dp_get_lines_for_sdp(crtc_state, 
> DP_SDP_PPS));
>  
> -     if ((assume_all_enabled && HAS_AS_SDP(display)) ||
> -         crtc_state->infoframes.enable & 
> intel_hdmi_infoframe_enable(DP_SDP_ADAPTIVE_SYNC))
> +     if (crtc_state->infoframes.enable &
> +         intel_hdmi_infoframe_enable(DP_SDP_ADAPTIVE_SYNC))
>               sdp_guardband = max(sdp_guardband,
>                                   intel_dp_get_lines_for_sdp(crtc_state, 
> DP_SDP_ADAPTIVE_SYNC));
>  
> -- 
> 2.45.2

-- 
Ville Syrjälä
Intel

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