From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>,
Anthony Wang <anthony1.wang@amd.com>,
amd-gfx@lists.freedesktop.org,
Daniel Wheeler <daniel.wheeler@amd.com>,
dri-devel@lists.freedesktop.org,
Alex Deucher <alexander.deucher@amd.com>,
Bindu Ramamurthy <bindur12@amd.com>
Subject: [PATCH AUTOSEL 5.4 26/46] drm/amd/display: Force vsync flip when reconfiguring MPCC
Date: Wed, 5 May 2021 12:38:36 -0400 [thread overview]
Message-ID: <20210505163856.3463279-26-sashal@kernel.org> (raw)
In-Reply-To: <20210505163856.3463279-1-sashal@kernel.org>
From: Anthony Wang <anthony1.wang@amd.com>
[ Upstream commit 56d63782af9bbd1271bff1422a6a013123eade4d ]
[Why]
Underflow observed when disabling PIP overlay in-game when
vsync is disabled, due to OTC master lock not working with
game pipe which is immediate flip.
[How]
When performing a full update, override flip_immediate value
to false for all planes, so that flip occurs on vsync.
Signed-off-by: Anthony Wang <anthony1.wang@amd.com>
Acked-by: Bindu Ramamurthy <bindur12@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/display/dc/core/dc.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 68d56a91d44b..7e52510e0997 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -2049,6 +2049,10 @@ static void commit_planes_for_stream(struct dc *dc,
plane_state->triplebuffer_flips = true;
}
}
+ if (update_type == UPDATE_TYPE_FULL) {
+ /* force vsync flip when reconfiguring pipes to prevent underflow */
+ plane_state->flip_immediate = false;
+ }
}
}
#endif
--
2.30.2
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next parent reply other threads:[~2021-05-05 16:39 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20210505163856.3463279-1-sashal@kernel.org>
2021-05-05 16:38 ` Sasha Levin [this message]
2021-05-05 16:38 ` [PATCH AUTOSEL 5.4 38/46] drm/amd/display: fixed divide by zero kernel crash during dsc enablement Sasha Levin
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