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drm/msm/dpu: always clear every individual pending flush mask

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There are two tiers of pending flush control, top level and
individual hardware block. Currently only the top level of
flush mask is reset to 0 but the individual pending flush masks
of particular hardware blocks are left at their previous values,
eventually accumulating all possible bit values and typically
flushing more than necessary.
Reset all individual hardware block flush masks to 0 to avoid
accidentally flushing them.

Changes in V13:
-- rewording commit text
-- add an empty space line as suggested

Changes in V14:
-- add Fixes tag

Fixes: 73bfb790ac ("msm:disp:dpu1: setup display datapath for SC7180 target")
Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
Patchwork: https://patchwork.freedesktop.org/patch/539508/
Link: https://lore.kernel.org/r/1685036458-22683-8-git-send-email-quic_khsieh@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
This commit is contained in:
Kuogee Hsieh
2023-05-25 10:40:55 -07:00
committed by Dmitry Baryshkov
parent d45be1ccd3
commit 625cbb0770
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
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@@ -100,6 +100,9 @@ static inline void dpu_hw_ctl_clear_pending_flush(struct dpu_hw_ctl *ctx)
trace_dpu_hw_ctl_clear_pending_flush(ctx->pending_flush_mask,
dpu_hw_ctl_get_flush_register(ctx));
ctx->pending_flush_mask = 0x0;
ctx->pending_intf_flush_mask = 0;
ctx->pending_wb_flush_mask = 0;
ctx->pending_merge_3d_flush_mask = 0;
memset(ctx->pending_dspp_flush_mask, 0,
sizeof(ctx->pending_dspp_flush_mask));