Commit 12fa0fdb authored May 20, 2021 by Bindu Ramamurthy Committed by Greg Kroah-Hartman Jun 18, 2021

drm/amd/display: Allow bandwidth validation for 0 streams.



[ Upstream commit ba8e59773ae59818695d1e20b8939282da80ec8c ]

[Why]
Bandwidth calculations are triggered for non zero streams, and
in case of 0 streams, these calculations were skipped with
pstate status not being updated.

[How]
As the pstate status is applicable for non zero streams, check
added for allowing 0 streams inline with dcn internal bandwidth
validations.

Signed-off-by: Bindu Ramamurthy <bindu.r@amd.com>
Reviewed-by: Roman Li <Roman.Li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent 8c48345f

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -2917,7 +2917,7 @@ bool dcn20_validate_bandwidth(struct dc dc, struct dc_state context,
		voltage_supported = dcn20_validate_bandwidth_internal(dc, context, false);
		dummy_pstate_supported = context->bw_ctx.bw.dcn.clk.p_state_change_support;

		if (voltage_supported && dummy_pstate_supported) {
		if (voltage_supported && (dummy_pstate_supported \|\| !(context->stream_count))) {
		context->bw_ctx.bw.dcn.clk.p_state_change_support = false;
		goto restore_dml_state;
		}