linux-kernel - [PATCH] drm/msm/dpu: Add VBIF to DPU snapshot

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Message-ID: <20241122-vbif-snapshot-v1-1-6e8fedd16fdf@quicinc.com>
Date: Fri, 22 Nov 2024 15:09:10 -0800
From: Jessica Zhang <quic_jesszhan@...cinc.com>
To: Rob Clark <robdclark@...il.com>,
        Dmitry Baryshkov
	<dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten
	<marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, "Simona
 Vetter" <simona@...ll.ch>
CC: <quic_abhinavk@...cinc.com>, <linux-arm-msm@...r.kernel.org>,
        <dri-devel@...ts.freedesktop.org>, <freedreno@...ts.freedesktop.org>,
        <linux-kernel@...r.kernel.org>,
        Jessica Zhang <quic_jesszhan@...cinc.com>
Subject: [PATCH] drm/msm/dpu: Add VBIF to DPU snapshot

Add VBIF registers to the DPU snapshot to help with debugging.

Signed-off-by: Jessica Zhang <quic_jesszhan@...cinc.com>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index ca4847b2b73876c59dedff1e3ec4188ea70860a7..df90b080be5a1a07bea76bad4f282d80cc0e4397 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -1024,6 +1024,14 @@ static void dpu_kms_mdp_snapshot(struct msm_disp_state *disp_state, struct msm_k
 		msm_disp_snapshot_add_block(disp_state, cat->cdm->len,
 					    dpu_kms->mmio + cat->cdm->base, cat->cdm->name);
 
+	for (i = 0; i < dpu_kms->catalog->vbif_count; i++) {
+		const struct dpu_vbif_cfg *vbif = &dpu_kms->catalog->vbif[i];
+
+		msm_disp_snapshot_add_block(disp_state, vbif->len,
+					    dpu_kms->vbif[vbif->id] + vbif->base,
+					    vbif->name);
+	}
+
 	pm_runtime_put_sync(&dpu_kms->pdev->dev);
 }
 

---
base-commit: 86313a9cd152330c634b25d826a281c6a002eb77
change-id: 20241122-vbif-snapshot-b6738fd73acf

Best regards,
-- 
Jessica Zhang <quic_jesszhan@...cinc.com>