drm/amd/display: Monitor patch to delay setting ignore MSA bit (dc326f61) · Commits · 戴 / test

[Why] Some displays clear ignore MSA bit on mode change, which cause blackscreen when programming variable vtotals. Ignore MSA bit needs programming needs to be delayed or re-set to be retained. [How] Create patch to delay programming ignore MSA bit after unblanking stream. Signed-off-by:

Jaehyun Chung <jaehyun.chung@amd.com> Reviewed-by:

Aric Cyr <Aric.Cyr@amd.com> Acked-by:

Anthony Koo <Anthony.Koo@amd.com> Acked-by:

Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> Acked-by:

Harry Wentland <harry.wentland@amd.com> Signed-off-by:

Alex Deucher <alexander.deucher@amd.com>

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

+3 −0

Original line number	Diff line number	Diff line
		@@ -3095,6 +3095,9 @@ void core_link_enable_stream(
		dc->hwss.unblank_stream(pipe_ctx,
		&pipe_ctx->stream->link->cur_link_settings);

		if (stream->link->local_sink->edid_caps.panel_patch.delay_ignore_msa > 0)
		msleep(stream->link->local_sink->edid_caps.panel_patch.delay_ignore_msa);

		if (dc_is_dp_signal(pipe_ctx->stream->signal))
		enable_stream_features(pipe_ctx);
		#if defined(CONFIG_DRM_AMD_DC_HDCP)

drivers/gpu/drm/amd/display/dc/dc_types.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -230,6 +230,7 @@ struct dc_panel_patch {
		unsigned int extra_delay_backlight_off;
		unsigned int extra_t7_ms;
		unsigned int skip_scdc_overwrite;
		unsigned int delay_ignore_msa;
		};

		struct dc_edid_caps {

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