Commit 02a6c2e4 authored by Ausef Yousof's avatar Ausef Yousof Committed by Alex Deucher
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drm/amd/display: fix dml ms order of operations 



[why&how]
small error in order of operations in immediateflipbytes
calculation on dml ms side that can result in dml ms
and mp mismatch immediateflip support for a given pipe
and thus an invalid hw state, correct the order to align
with mp.

Reviewed-by: default avatarLeo Chen <leo.chen@amd.com>
Signed-off-by: default avatarAusef Yousof <Ausef.Yousof@amd.com>
Signed-off-by: default avatarRay Wu <ray.wu@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 29591e6f

drivers/gpu/drm/amd/display/dc/dml2/display_mode_core.c

+1 −1
Original line number Diff line number Diff line
@@ -6529,7 +6529,7 @@ static noinline_for_stack void dml_prefetch_check(struct display_mode_lib_st *mo 
				mode_lib->ms.TotImmediateFlipBytes = 0;

				for (k = 0; k <= mode_lib->ms.num_active_planes - 1; k++) {

					if (!(mode_lib->ms.policy.ImmediateFlipRequirement[k] == dml_immediate_flip_not_required)) {

						mode_lib->ms.TotImmediateFlipBytes = mode_lib->ms.TotImmediateFlipBytes + mode_lib->ms.NoOfDPP[j][k] * mode_lib->ms.PDEAndMetaPTEBytesPerFrame[j][k] + mode_lib->ms.MetaRowBytes[j][k];

						mode_lib->ms.TotImmediateFlipBytes = mode_lib->ms.TotImmediateFlipBytes + mode_lib->ms.NoOfDPP[j][k] * (mode_lib->ms.PDEAndMetaPTEBytesPerFrame[j][k] + mode_lib->ms.MetaRowBytes[j][k]);

						if (mode_lib->ms.use_one_row_for_frame_flip[j][k]) {

							mode_lib->ms.TotImmediateFlipBytes = mode_lib->ms.TotImmediateFlipBytes + mode_lib->ms.NoOfDPP[j][k] * (2 * mode_lib->ms.DPTEBytesPerRow[j][k]);

						} else {