Commit f9420bfa authored Jul 04, 2019 by Alvin Lee Committed by Greg Kroah-Hartman Aug 16, 2019

drm/amd/display: Only enable audio if speaker allocation exists



[ Upstream commit 6ac25e6d5b2fbf251e9fa2f4131d42c815b43867 ]

[Why]

In dm_helpers_parse_edid_caps, there is a corner case where no speakers
can be allocated even though the audio mode count is greater than 0.
Enabling audio when no speaker allocations exists can cause issues in
the video stream.

[How]

Add a check to not enable audio unless one or more speaker allocations
exist (since doing this can cause issues in the video stream).

Signed-off-by: Alvin Lee <alvin.lee2@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent 3998e684

drivers/gpu/drm/amd/display/dc/core/dc_resource.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1956,7 +1956,7 @@ enum dc_status resource_map_pool_resources(
		/* TODO: Add check if ASIC support and EDID audio */
		if (!stream->sink->converter_disable_audio &&
		dc_is_audio_capable_signal(pipe_ctx->stream->signal) &&
		stream->audio_info.mode_count) {
		stream->audio_info.mode_count && stream->audio_info.flags.all) {
		pipe_ctx->stream_res.audio = find_first_free_audio(
		&context->res_ctx, pool, pipe_ctx->stream_res.stream_enc->id);