[PATCH 11/14] drm/i915/dp: Program AS SDP DB[1:0] for PR with Link off

[Ankit Nautiyal <ankit.k.nautiyal@intel.com>]

For Panel Replay with AUX-less ALPM (link-off PR), the source must send
Adaptive-Sync SDP v2. Program DB[1:0] per DP spec v2.1:
- VRR AVT: 00b (variable VTotal)
- VRR FAVT: 10b/11b (TRR not reached/reached)
- Fixed timing with PR link-off (VRR off): 01b (AS disabled; VTotal fixed)

Select SDP version v2 whenever PR link-off or VRR is active, otherwise v1,
and program the AS SDP DB[1:0] bits.

Also, drop the redundant target_rr assignment.

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
---
 drivers/gpu/drm/i915/display/intel_dp.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 5952db6197cf..ad2aceb526ff 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -3139,7 +3139,7 @@ static void intel_dp_compute_as_sdp(struct intel_dp *intel_dp,
 	as_sdp->duration_incr_ms = 0;
 	as_sdp->version = 0x2;
 
-	if (crtc_state->vrr.enable)
+	if (crtc_state->vrr.enable || intel_psr_is_pr_with_link_off(crtc_state))
 		as_sdp->version = 0x2;
 	else
 		as_sdp->version = 0x1;
@@ -3154,9 +3154,10 @@ static void intel_dp_compute_as_sdp(struct intel_dp *intel_dp,
 		as_sdp->mode = DP_AS_SDP_FAVT_TRR_REACHED;
 		as_sdp->target_rr = drm_mode_vrefresh(adjusted_mode);
 		as_sdp->target_rr_divider = true;
-	} else {
+	} else if (crtc_state->vrr.enable) {
 		as_sdp->mode = DP_AS_SDP_AVT_DYNAMIC_VTOTAL;
-		as_sdp->target_rr = 0;
+	} else if (intel_psr_is_pr_with_link_off(crtc_state)) {
+		as_sdp->mode = DP_AS_SDP_AVT_FIXED_VTOTAL;
 	}
 }
 
-- 
2.45.2