From 9eb677d09c3c41e06e0371d9eafe259eb2f8913c Mon Sep 17 00:00:00 2001 From: "Leo (Sunpeng) Li" Date: Thu, 29 Mar 2018 17:04:12 -0400 Subject: [PATCH 4024/4131] 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 Reviewed-by: Anthony Koo Acked-by: Harry Wentland --- drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c index 99d1922..f385b18 100644 --- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c @@ -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) { -- 2.7.4