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@@ -79,6 +79,9 @@
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/* Maximum number of VSYNC wait attempts for RSC state transition */
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#define MAX_RSC_WAIT 5
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+/* Worst case time required for trigger the frame after the EPT wait */
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+#define EPT_BACKOFF_THRESHOLD (3 * NSEC_PER_MSEC)
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+
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#define IS_ROI_UPDATED(a, b) (a.x1 != b.x1 || a.x2 != b.x2 || \
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a.y1 != b.y1 || a.y2 != b.y2)
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@@ -5083,7 +5086,7 @@ void _sde_encoder_delay_kickoff_processing(struct sde_encoder_virt *sde_enc)
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current_ts = ktime_get_ns();
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/* ept is in ns and avr_step is mulitple of refresh rate */
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ept_ts = avr_step_fps ? ept - DIV_ROUND_UP(NSEC_PER_SEC, avr_step_fps) + NSEC_PER_MSEC
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- : ept - (2 * NSEC_PER_MSEC);
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+ : ept - EPT_BACKOFF_THRESHOLD;
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/* ept time already elapsed */
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if (ept_ts <= current_ts) {
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@@ -5182,8 +5185,6 @@ int sde_encoder_prepare_for_kickoff(struct drm_encoder *drm_enc,
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goto end;
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}
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- _sde_encoder_delay_kickoff_processing(sde_enc);
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-
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ret = _sde_encoder_prepare_for_kickoff_processing(drm_enc, params, sde_enc, sde_kms,
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needs_hw_reset, is_cmd_mode);
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@@ -5230,6 +5231,9 @@ void sde_encoder_kickoff(struct drm_encoder *drm_enc, bool config_changed)
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if (sde_enc->cur_master)
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_sde_encoder_update_retire_txq(sde_enc->cur_master, sde_kms);
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+ /* delay frame kickoff based on expected present time */
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+ _sde_encoder_delay_kickoff_processing(sde_enc);
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+
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/* All phys encs are ready to go, trigger the kickoff */
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_sde_encoder_kickoff_phys(sde_enc, config_changed);
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qctecmdr