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@quicinc.com>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/625946/
Link: https://lore.kernel.org/r/20241122-vbif-snapshot-v1-1-6e8fedd16fdf@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

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);
 }