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disp: msm: sde: handle vsync wait status check during timeout

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When VSYNC interrupts are delayed due to irq latencies, there is a
possibility that the timeout handler checking the irq status and the
irq handler clearing the status bit happening at the same time on
different CPU cores. This is reported as an error, though there is
not actual issue. Handle this case, by adding an additional ctl-flush
register check in the vsync timeout handler. As part of the change
add error/eventlogs in commit-done wait failures.

Change-Id: Ie7e30dc4ef1e50651cee9015cd3f2caeacf47e5f
Signed-off-by: Veera Sundaram Sankaran <quic_veeras@quicinc.com>
This commit is contained in:
Veera Sundaram Sankaran
2022-06-21 11:41:31 -07:00
父節點 3f859c78b5
當前提交 4672a64057
共有 3 個文件被更改，包括 46 次插入 和 21 次删除
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18
msm/sde/sde_encoder.c
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@@ -481,12 +481,9 @@ int sde_encoder_helper_wait_for_irq(struct sde_encoder_phys *phys_enc,
unsigned long flags;
SDE_EVT32(DRMID(phys_enc->parent), intr_idx,
irq->hw_idx, irq->irq_idx,
phys_enc->hw_pp->idx - PINGPONG_0,
atomic_read(wait_info->atomic_cnt));
SDE_DEBUG_PHYS(phys_enc,
"done but irq %d not triggered\n",
irq->irq_idx);
irq->hw_idx, irq->irq_idx, phys_enc->hw_pp->idx - PINGPONG_0,
atomic_read(wait_info->atomic_cnt), SDE_EVTLOG_FUNC_CASE1);
SDE_DEBUG_PHYS(phys_enc, "done but irq %d not triggered\n", irq->irq_idx);
local_irq_save(flags);
irq->cb.func(phys_enc, irq->irq_idx);
local_irq_restore(flags);
@@ -503,7 +500,7 @@ int sde_encoder_helper_wait_for_irq(struct sde_encoder_phys *phys_enc,
ret = 0;
SDE_EVT32(DRMID(phys_enc->parent), intr_idx, irq->hw_idx,
irq->irq_idx, phys_enc->hw_pp->idx - PINGPONG_0,
atomic_read(wait_info->atomic_cnt));
atomic_read(wait_info->atomic_cnt), SDE_EVTLOG_FUNC_CASE2);
}
SDE_EVT32_VERBOSE(DRMID(phys_enc->parent), intr_idx, irq->hw_idx,
@@ -5573,8 +5570,13 @@ int sde_encoder_wait_for_event(struct drm_encoder *drm_enc,
SDE_ATRACE_BEGIN(atrace_buf);
ret = fn_wait(phys);
SDE_ATRACE_END(atrace_buf);
if (ret)
if (ret) {
SDE_ERROR_ENC(sde_enc, "intf_type:%d, event:%d i:%d, failed:%d\n",
sde_enc->disp_info.intf_type, event, i, ret);
SDE_EVT32(DRMID(drm_enc), sde_enc->disp_info.intf_type, event,
i, ret, SDE_EVTLOG_ERROR);
return ret;
}
}
}