[PATCH 31/39] drm/amd/display: Fix 1DLUT setting for NL SDR blending

Alex Hung
2024-06-20T16:19:41Z

From: Relja Vojvodic <relja.vojvodic@amd.com>

[WHY]
Enabling NL SDR blending caused the 1D LUTs to be set/populated in two
different functions. This caused flickering as the LUT was set differently
by the two functions, one of which should only have been modifying the 1D
LUT if 3D LUT was enabled.

[HOW]
Added check to only modify the 1D LUT in populate_mcm if 3D LUT was
enabled.

Added blend_tf function update for non-main planes if the 3D LUT path
was taken.

Reviewed-by: Ilya Bakoulin <ilya.bakoulin@amd.co>
Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Acked-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Relja Vojvodic <relja.vojvodic@amd.com>
---
drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c
index 5306c8c170c5..b5a02a8fc9d8 100644
--- a/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c
@@ -502,7 +502,7 @@ void dcn401_populate_mcm_luts(struct dc *dc,
dcn401_get_mcm_lut_xable_from_pipe_ctx(dc, pipe_ctx, &shaper_xable, &lut3d_xable, &lut1d_xable);

/* 1D LUT */
- if (mcm_luts.lut1d_func) {
+ if (mcm_luts.lut1d_func && lut3d_xable != MCM_LUT_DISABLE) {
memset(&m_lut_params, 0, sizeof(m_lut_params));
if (mcm_luts.lut1d_func->type == TF_TYPE_HWPWL)
m_lut_params.pwl = &mcm_luts.lut1d_func->pwl;
@@ -674,7 +674,7 @@ bool dcn401_set_mcm_luts(struct pipe_ctx *pipe_ctx,
mpc->funcs->set_movable_cm_location(mpc, MPCC_MOVABLE_CM_LOCATION_BEFORE, mpcc_id);
pipe_ctx->plane_state->mcm_location = MPCC_MOVABLE_CM_LOCATION_BEFORE;
// 1D LUT
- if (!plane_state->mcm_lut1d_enable) {
+ if (plane_state->mcm_shaper_3dlut_setting == DC_CM2_SHAPER_3DLUT_SETTING_BYPASS_ALL) {
if (plane_state->blend_tf.type == TF_TYPE_HWPWL)
lut_params = &plane_state->blend_tf.pwl;
else if (plane_state->blend_tf.type == TF_TYPE_DISTRIBUTED_POINTS) {
--
2.34.1