From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, "Leo (Sunpeng) Li" , Anthony Koo , Harry Wentland , Alex Deucher , Sasha Levin Subject: [PATCH 4.17 182/336] drm/amd/display: Fix dim display on DCE11 Date: Wed, 1 Aug 2018 18:48:37 +0200 Message-Id: <20180801165036.061293230@linuxfoundation.org> In-Reply-To: <20180801165028.930831994@linuxfoundation.org> References: <20180801165028.930831994@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: 4.17-stable review patch. If anyone has any objections, please let me know. ------------------ From: "Leo (Sunpeng) Li" [ Upstream commit 84ffa80123f56f80145dc638f21dfcbedda5610d ] 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 Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c @@ -279,7 +279,9 @@ dce110_set_input_transfer_func(struct pi 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) {