Commit 170390e5 authored by Rodrigo Siqueira's avatar Rodrigo Siqueira Committed by Alex Deucher
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drm/amd/display: Handle seamless boot stream 



A seamless boot stream has hardware resources assigned to it, and adding
a new stream means rebuilding the current assignment. It is desirable to
avoid this situation since it may cause light-up issues on the VGA
monitor on USB-C. This commit swaps the seamless boot stream to pipe 0
(if necessary) to ensure that the pipe context matches.

Reviewed-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Co-developed-by: default avatarAurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: default avatarAurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent a5e39ae2

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

+15 −0
Original line number Diff line number Diff line
@@ -2765,6 +2765,21 @@ enum dc_status dc_validate_with_context(struct dc *dc, 
			goto fail;

	}



	/* Swap seamless boot stream to pipe 0 (if needed) to ensure pipe_ctx

	 * matches. This may change in the future if seamless_boot_stream can be

	 * multiple.

	 */

	for (i = 0; i < add_streams_count; i++) {

		mark_seamless_boot_stream(dc, add_streams[i]);

		if (add_streams[i]->apply_seamless_boot_optimization && i != 0) {

			struct dc_stream_state *temp = add_streams[0];



			add_streams[0] = add_streams[i];

			add_streams[i] = temp;

			break;

		}

	}



	/* Add new streams and then add all planes for the new stream */

	for (i = 0; i < add_streams_count; i++) {

		calculate_phy_pix_clks(add_streams[i]);