From ab105bf6adf65c6e22857501184231b58b7473cd Mon Sep 17 00:00:00 2001
From: Abhinav Kumar <quic_abhinavk@quicinc.com>
Date: Tue, 26 Apr 2022 07:41:34 -0700
Subject: drm/msm/dpu: add writeback blocks to the display snapshot
Git-commit: 4448d59104151cc6de9472d45925595651288af2
Patch-mainline: v5.19-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225

Add writeback block information while capturing the display
snapshot.

Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/483524/
Link: https://lore.kernel.org/r/1650984096-9964-18-git-send-email-quic_abhinavk@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index 2e7b673a8cca..ecde6fc8c0d6 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -947,6 +947,11 @@ static void dpu_kms_mdp_snapshot(struct msm_disp_state *disp_state, struct msm_k
 		msm_disp_snapshot_add_block(disp_state, cat->mixer[i].len,
 				dpu_kms->mmio + cat->mixer[i].base, "lm_%d", i);
 
+	/* dump WB sub-blocks HW regs info */
+	for (i = 0; i < cat->wb_count; i++)
+		msm_disp_snapshot_add_block(disp_state, cat->wb[i].len,
+				dpu_kms->mmio + cat->wb[i].base, "wb_%d", i);
+
 	msm_disp_snapshot_add_block(disp_state, top->hw.length,
 			dpu_kms->mmio + top->hw.blk_off, "top");
 
-- 
2.38.1