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drm/amd/display: Gamut remap only changes missed

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[WHY&HOW]
If surface format is dynamically changed within app without changing
timing / whole plane, we don't reprogram gamut remap matrix.

Issue example:
Linear FP16 scRGB going to PQ+BT.2020 monitor.
Remap = scRGB->BT.2020

App switches swapchain format to 10-bit PQ+BT.2020.
SW calculates correctly that new Remap = bypass (in=-out=BT.2020).
But update not applied in HW.

Reviewed-by: Jun Lei <jun.lei@amd.com>
Acked-by: Stylon Wang <stylon.wang@amd.com>
Signed-off-by: Krunoslav Kovac <krunoslav.kovac@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Krunoslav Kovac 2023-07-31 16:46:14 -04:00 committed by Alex Deucher
parent aa298b30ce
commit d288c87151
1 changed files with 1 additions and 0 deletions
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1
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
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@ -1638,6 +1638,7 @@ static void dcn20_update_dchubp_dpp(
if (pipe_ctx->update_flags.bits.enable || pipe_ctx->update_flags.bits.opp_changed
|| pipe_ctx->update_flags.bits.plane_changed
|| pipe_ctx->stream->update_flags.bits.gamut_remap
|| plane_state->update_flags.bits.gamut_remap_change
|| pipe_ctx->stream->update_flags.bits.out_csc) {
/* dpp/cm gamut remap*/
dc->hwss.program_gamut_remap(pipe_ctx);