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| author | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2024-02-26 05:28:01 +0300 |
|---|---|---|
| committer | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2024-03-04 12:44:03 +0300 |
| commit | 4be445f5b6b6810baf397b2d159bd07c3573fd75 (patch) | |
| tree | a87f3d3139804ad7c5ce35324ff0a92cc6f99f39 /drivers/gpu/drm/msm/disp | |
| parent | d72a3d35b7ef5a3c0260462f130fa3dd7576aa2f (diff) | |
| download | linux-4be445f5b6b6810baf397b2d159bd07c3573fd75.tar.xz | |
drm/msm/dpu: capture snapshot on the first commit_done timeout
In order to debug commit_done timeouts, capture the devcoredump state
when the first timeout occurs after the encoder has been enabled.
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/579850/
Link: https://lore.kernel.org/r/20240226-fd-dpu-debug-timeout-v4-3-51eec83dde23@linaro.org
Diffstat (limited to 'drivers/gpu/drm/msm/disp')
| -rw-r--r-- | drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c index e8d123327c41..9a14d2232e4a 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c @@ -126,6 +126,8 @@ enum dpu_enc_rc_states { * @base: drm_encoder base class for registration with DRM * @enc_spinlock: Virtual-Encoder-Wide Spin Lock for IRQ purposes * @enabled: True if the encoder is active, protected by enc_lock + * @commit_done_timedout: True if there has been a timeout on commit after + * enabling the encoder. * @num_phys_encs: Actual number of physical encoders contained. * @phys_encs: Container of physical encoders managed. * @cur_master: Pointer to the current master in this mode. Optimization @@ -172,6 +174,7 @@ struct dpu_encoder_virt { spinlock_t enc_spinlock; bool enabled; + bool commit_done_timedout; unsigned int num_phys_encs; struct dpu_encoder_phys *phys_encs[MAX_PHYS_ENCODERS_PER_VIRTUAL]; @@ -1269,6 +1272,9 @@ static void dpu_encoder_virt_atomic_enable(struct drm_encoder *drm_enc, atomic_set(&dpu_enc->frame_done_timeout_cnt, 0); mutex_lock(&dpu_enc->enc_lock); + + dpu_enc->commit_done_timedout = false; + cur_mode = &dpu_enc->base.crtc->state->adjusted_mode; dpu_enc->wide_bus_en = dpu_encoder_is_widebus_enabled(drm_enc); @@ -2553,6 +2559,10 @@ int dpu_encoder_wait_for_commit_done(struct drm_encoder *drm_enc) DPU_ATRACE_BEGIN("wait_for_commit_done"); ret = phys->ops.wait_for_commit_done(phys); DPU_ATRACE_END("wait_for_commit_done"); + if (ret == -ETIMEDOUT && !dpu_enc->commit_done_timedout) { + dpu_enc->commit_done_timedout = true; + msm_disp_snapshot_state(drm_enc->dev); + } if (ret) return ret; } |