[PATCH v9 6/8] drm/i915/display: Compute Adaptive sync SDP params

[Nautiyal, Ankit K]

On 5/24/2024 3:54 PM, Mitul Golani wrote:
> Compute params for Adaptive Sync SDP when Fixed Average Vtotal
> mode is enabled.
>
> Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani at intel.com>
> ---
>   drivers/gpu/drm/i915/display/intel_dp.c | 17 +++++++++++++----
>   1 file changed, 13 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index 15aab14c4206..7edc517b7859 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -2627,7 +2627,7 @@ static void intel_dp_compute_as_sdp(struct intel_dp *intel_dp,
>   	const struct drm_display_mode *adjusted_mode =
>   		&crtc_state->hw.adjusted_mode;
>   
> -	if (!crtc_state->vrr.enable ||
> +	if (!(crtc_state->vrr.enable || crtc_state->cmrr.enable) ||
>   	    !intel_dp_as_sdp_supported(intel_dp))
>   		return;
>   
> @@ -2636,11 +2636,20 @@ 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->vrr.enable) {
> +		as_sdp->mode = DP_AS_SDP_AVT_FIXED_VTOTAL;
> +		as_sdp->vtotal = adjusted_mode->vtotal;
> +		as_sdp->target_rr = 0;
> +	} else {


Since vrr.enable is set in case of cmrr also, we should check for 
cmrr.enable first:

if ( crtc_state->cmrr.enable) {

...

} else if {

..

}

Regards,

Ankit

> +		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);
> +		as_sdp->target_rr_divider = true;
> +	}



>   }
>   
>   static void intel_dp_compute_vsc_sdp(struct intel_dp *intel_dp,