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@xxxxxxxxxx> --- 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@xxxxxxxxxx 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@xxxxxxxxxx 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@xxxxxxxxxx --- 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@xxxxxxxxxx>
