From: Kuogee Hsieh <quic_khsieh@xxxxxxxxxxx>
[ Upstream commit 625cbb077007698060b12d0ae5657a4d8411b153 ]
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: 73bfb790ac78 ("msm:disp:dpu1: setup display datapath for SC7180 target")
Signed-off-by: Kuogee Hsieh <quic_khsieh@xxxxxxxxxxx>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Reviewed-by: Marijn Suijten <marijn.suijten@xxxxxxxxxxxxxx>
Patchwork: https://patchwork.freedesktop.org/patch/539508/
Link: https://lore.kernel.org/r/1685036458-22683-8-git-send-email-quic_khsieh@xxxxxxxxxxx
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
index e57faf5906a8b..f6270b7a0b140 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
@@ -117,6 +117,9 @@ 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));
--
2.39.2
