linux-kernel - [PATCH v12 07/10] drm/msm/dpu: always clear every individual pending flush mask

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Date:   Mon, 22 May 2023 12:30:50 -0700
From:   Kuogee Hsieh <quic_khsieh@...cinc.com>
To:     <dri-devel@...ts.freedesktop.org>, <robdclark@...il.com>,
        <sean@...rly.run>, <swboyd@...omium.org>, <dianders@...omium.org>,
        <vkoul@...nel.org>, <daniel@...ll.ch>, <airlied@...il.com>,
        <agross@...nel.org>, <dmitry.baryshkov@...aro.org>,
        <andersson@...nel.org>
CC:     Kuogee Hsieh <quic_khsieh@...cinc.com>,
        <quic_abhinavk@...cinc.com>, <quic_jesszhan@...cinc.com>,
        <quic_sbillaka@...cinc.com>, <marijn.suijten@...ainline.org>,
        <freedreno@...ts.freedesktop.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v12 07/10] drm/msm/dpu: always clear every individual pending flush mask

There are two tiers of pending flush control, main controller and
individual hardware block. Currently only the main controller of
flush mask is reset to 0 but leave out some individual pending flush
mask of particular hardware block keep previous value at
clear_pending_flush(). Reset all individual hardware blocks flush
mask to 0 to avoid individual hardware block be triggered accidentally.

Signed-off-by: Kuogee Hsieh <quic_khsieh@...cinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

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 69d0ea2..069c6e5 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
@@ -100,7 +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));
 }
-- 
2.7.4