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drm/amd/display: Force vsync flip when reconfiguring MPCC

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[ 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>
This commit is contained in:
Anthony Wang 2021-03-31 11:03:35 -04:00 committed by Greg Kroah-Hartman
parent 63e9abe35d
commit f9bc5e3f3f
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/amd/display/dc/core/dc.c
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@ -2504,6 +2504,10 @@ 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;
}
}
}