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drm/amd/display: fix gamma not being applied correctly

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[why]
Gamma was always being set as identity on SDR monitor,
leading to no changes in gamma. This caused nightlight to
not apply correctly.

[how]
Added a default gamma structure to compare against
in the sdr case.

Signed-off-by: Murton Liu <murton.liu@amd.com>
Reviewed-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Murton Liu 2018-10-17 14:47:45 -04:00 committed by Alex Deucher
parent eb6b29d628
commit 8ce504b938
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
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@ -1227,7 +1227,8 @@ static bool dcn10_set_input_transfer_func(struct pipe_ctx *pipe_ctx,
tf = plane_state->in_transfer_func;
if (plane_state->gamma_correction &&
!plane_state->gamma_correction->is_identity
!dpp_base->ctx->dc->debug.always_use_regamma
&& !plane_state->gamma_correction->is_identity
&& dce_use_lut(plane_state->format))
dpp_base->funcs->dpp_program_input_lut(dpp_base, plane_state->gamma_correction);