linux-kernel - [PATCH] drm/msm/dpu: Set vsync source irrespective of mdp top support

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Message-ID:
 <TYUPR06MB6099CBBE5090DB12A2C187E3DDFDA@TYUPR06MB6099.apcprd06.prod.outlook.com>
Date: Tue, 28 Oct 2025 20:36:35 +0800
From: Teguh Sobirin <teguh@...ir.in>
To: Rob Clark <robin.clark@....qualcomm.com>,
	Dmitry Baryshkov <lumag@...nel.org>,
	Abhinav Kumar <abhinav.kumar@...ux.dev>,
	Jessica Zhang <jesszhan0024@...il.com>,
	Sean Paul <sean@...rly.run>,
	Marijn Suijten <marijn.suijten@...ainline.org>,
	David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>
Cc: linux-arm-msm@...r.kernel.org,
	dri-devel@...ts.freedesktop.org,
	freedreno@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	Teguh Sobirin <teguh@...ir.in>
Subject: [PATCH] drm/msm/dpu: Set vsync source irrespective of mdp top support

Move the loop over phys_encs outside the
hw_mdptop->ops.setup_vsync_source block.
This way, vsync_sel() is called for each interface.

This change ensures TE vsync selection works
even if setup_vsync_source is not implemented.

Signed-off-by: Teguh Sobirin <teguh@...ir.in>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 22 +++++++++------------
 1 file changed, 9 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index 258edaa18fc0..f36c5c7924a3 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -784,24 +784,20 @@ static void _dpu_encoder_update_vsync_source(struct dpu_encoder_virt *dpu_enc,
 		return;
 	}
 
+	/* Set vsync source irrespective of mdp top support */
+	vsync_cfg.vsync_source = disp_info->vsync_source;
+
 	if (hw_mdptop->ops.setup_vsync_source) {
 		for (i = 0; i < dpu_enc->num_phys_encs; i++)
 			vsync_cfg.ppnumber[i] = dpu_enc->hw_pp[i]->idx;
+	}
 
-		vsync_cfg.pp_count = dpu_enc->num_phys_encs;
-		vsync_cfg.frame_rate = drm_mode_vrefresh(&dpu_enc->base.crtc->state->adjusted_mode);
-
-		vsync_cfg.vsync_source = disp_info->vsync_source;
-
-		hw_mdptop->ops.setup_vsync_source(hw_mdptop, &vsync_cfg);
-
-		for (i = 0; i < dpu_enc->num_phys_encs; i++) {
-			phys_enc = dpu_enc->phys_encs[i];
+	for (i = 0; i < dpu_enc->num_phys_encs; i++) {
+		phys_enc = dpu_enc->phys_encs[i];
 
-			if (phys_enc->has_intf_te && phys_enc->hw_intf->ops.vsync_sel)
-				phys_enc->hw_intf->ops.vsync_sel(phys_enc->hw_intf,
-						vsync_cfg.vsync_source);
-		}
+		if (phys_enc->has_intf_te && phys_enc->hw_intf->ops.vsync_sel)
+			phys_enc->hw_intf->ops.vsync_sel(phys_enc->hw_intf,
+					vsync_cfg.vsync_source);
 	}
 }
 
-- 
2.34.1