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drm/amd/display: Fix dim display on DCE11 

Before programming the input gamma, check that we're not using the
identity correction.

Signed-off-by: Leo (Sunpeng) Li <sunpeng.li@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Leo (Sunpeng) Li 2018-03-29 17:04:12 -04:00 committed by Alex Deucher
parent e43a432c01
commit 84ffa80123
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
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@ -280,7 +280,9 @@ dce110_set_input_transfer_func(struct pipe_ctx *pipe_ctx,
build_prescale_params(&prescale_params, plane_state);
ipp->funcs->ipp_program_prescale(ipp, &prescale_params);
if (plane_state->gamma_correction && dce_use_lut(plane_state->format))
if (plane_state->gamma_correction &&
!plane_state->gamma_correction->is_identity &&
dce_use_lut(plane_state->format))
ipp->funcs->ipp_program_input_lut(ipp, plane_state->gamma_correction);
if (tf == NULL) {