[PATCH v11 6/8] drm/i915/display: Compute Adaptive sync SDP params

[Nautiyal, Ankit K]

On 6/3/2024 11:19 AM, Mitul Golani wrote:
> Compute params for Adaptive Sync SDP when Fixed Average Vtotal
> mode is enabled.
>
> --v2:
> Since vrr.enable is set in case of cmrr also, handle accordingly(Ankit).
>
> --v3:
> - Since vrr.enable is set in case of cmrr also, handle
> accordingly(Ankit).
> - check cmrr.enable when CMRR flags are set during intel_dp_compute_as_sdp.
>
> Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani at intel.com>
> ---
>   drivers/gpu/drm/i915/display/intel_dp.c | 15 ++++++++++++---
>   1 file changed, 12 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index ac81b172b1ec..be3b9ba943a5 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -2637,11 +2637,20 @@ static void intel_dp_compute_as_sdp(struct intel_dp *intel_dp,
>   	/* Currently only DP_AS_SDP_AVT_FIXED_VTOTAL mode supported */
>   	as_sdp->sdp_type = DP_SDP_ADAPTIVE_SYNC;
>   	as_sdp->length = 0x9;
> -	as_sdp->mode = DP_AS_SDP_AVT_FIXED_VTOTAL;
> -	as_sdp->vtotal = adjusted_mode->vtotal;
> -	as_sdp->target_rr = 0;
>   	as_sdp->duration_incr_ms = 0;
>   	as_sdp->duration_incr_ms = 0;
> +
> +	if (crtc_state->cmrr.enable) {
> +		as_sdp->mode = DP_AS_SDP_FAVT_TRR_REACHED;
> +		as_sdp->vtotal = adjusted_mode->vtotal;
> +		as_sdp->target_rr = DIV_ROUND_UP(adjusted_mode->clock * 1000,
> +						 adjusted_mode->htotal * adjusted_mode->vtotal);

Perhpas drm_mode_vrefresh() here.

With that change, this is:

Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal at intel.com>


> +		as_sdp->target_rr_divider = true;
> +	} else {
> +		as_sdp->mode = DP_AS_SDP_AVT_FIXED_VTOTAL;
> +		as_sdp->vtotal = adjusted_mode->vtotal;
> +		as_sdp->target_rr = 0;
> +	}
>   }
>   
>   static void intel_dp_compute_vsc_sdp(struct intel_dp *intel_dp,