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

[Mitul Golani]

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);
+		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,
-- 
2.25.1