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drm/amd/display: Don't optimize bandwidth before disabling planes

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[ Upstream commit 6ad98e8aeb ]

[Why]
There is a window of time where we optimize bandwidth due to no streams
enabled will enable PSTATE changing but HUBPs are not disabled yet.
This results in underflow counter increasing in some hotplug scenarios.

[How]
Set the optimize-bandwidth flag for later processing once all the HUBPs
are properly disabled.

Signed-off-by: Aric Cyr <aric.cyr@amd.com>
Acked-by: Bindu Ramamurthy <bindu.r@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:
Aric Cyr 2021-02-12 18:13:59 -05:00 • committed by Greg Kroah-Hartman
commit bd94773197
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/display/dc/core/dc.c
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@ -2345,7 +2345,8 @@ static void commit_planes_do_stream_update(struct dc *dc,
if (pipe_ctx->stream_res.audio && !dc->debug.az_endpoint_mute_only)
pipe_ctx->stream_res.audio->funcs->az_disable(pipe_ctx->stream_res.audio);
dc->hwss.optimize_bandwidth(dc, dc->current_state);
dc->optimized_required = true;
} else {
if (dc->optimize_seamless_boot_streams == 0)
dc->hwss.prepare_bandwidth(dc, dc->current_state);