linux-kernel - [PATCH v4 0/3] drm/msm/dpu: debug commit

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Date: Mon, 26 Feb 2024 04:27:58 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Rob Clark <robdclark@...il.com>, 
 Abhinav Kumar <quic_abhinavk@...cinc.com>, Sean Paul <sean@...rly.run>, 
 Marijn Suijten <marijn.suijten@...ainline.org>, 
 David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>
Cc: Steev Klimaszewski <steev@...i.org>, linux-arm-msm@...r.kernel.org, 
 dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org, 
 linux-kernel@...r.kernel.org
Subject: [PATCH v4 0/3] drm/msm/dpu: debug commit_done timeouts

In order to debug commit_done timeouts ([1]) display the sticky bits of
the CTL_FLUSH register and capture the devcore dump when the first such
timeout occurs.

[1] https://gitlab.freedesktop.org/drm/msm/-/issues/33

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
---
Changes in v4:
- Reworded documentation for new funcsions (Abhinav)
- Link to v3: https://lore.kernel.org/r/20240225-fd-dpu-debug-timeout-v3-0-252f2b21cdcc@linaro.org

Changes in v3:
- Capture the snapshot only on the first comit_done timeout (Abhinav)
- Link to v2: https://lore.kernel.org/r/20240208-fd-dpu-debug-timeout-v2-1-9f907f1bdd87@linaro.org

Changes in v2:
- Added a call to msm_disp_snapshot_state() to trigger devcore dump
  (Abhinav)
- Link to v1: https://lore.kernel.org/r/20240106-fd-dpu-debug-timeout-v1-1-6d9762884641@linaro.org

---
Dmitry Baryshkov (3):
      drm/msm/dpu: make "vblank timeout" more useful
      drm/msm/dpu: split dpu_encoder_wait_for_event into two functions
      drm/msm/dpu: capture snapshot on the first commit_done timeout

 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c        | 79 ++++++++++++++++------
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h        | 22 +-----
 .../gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c   |  2 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c            |  2 +-
 drivers/gpu/drm/msm/msm_drv.h                      | 10 ---
 5 files changed, 65 insertions(+), 50 deletions(-)
---
base-commit: 33e1d31873f87d119e5120b88cd350efa68ef276
change-id: 20240106-fd-dpu-debug-timeout-e917f0bc8063

Best regards,
-- 
Dmitry Baryshkov <dmitry.baryshkov@...aro.org>