From: Reza Amini <[email protected]>

[Why]
Need support for more color management in 10bit
surface.

[How]
Provide support for DePQ for 10bit surface

Signed-off-by: Reza Amini <[email protected]>
Reviewed-by: Krunoslav Kovac <[email protected]>
Acked-by: Leo Li <[email protected]>
---
 drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dpp_cm.c | 3 +++
 drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c  | 5 +++++
 2 files changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dpp_cm.c 
b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dpp_cm.c
index 2d112c316424..05a3e7f97ef0 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dpp_cm.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dpp_cm.c
@@ -149,6 +149,9 @@ void dpp2_set_degamma(
        case IPP_DEGAMMA_MODE_HW_xvYCC:
                REG_UPDATE(CM_DGAM_CONTROL, CM_DGAM_LUT_MODE, 2);
                        break;
+       case IPP_DEGAMMA_MODE_USER_PWL:
+               REG_UPDATE(CM_DGAM_CONTROL, CM_DGAM_LUT_MODE, 3);
+               break;
        default:
                BREAK_TO_DEBUGGER();
                break;
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c 
b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
index 2d093ff0a76c..ec9838d6e0ee 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
@@ -878,6 +878,11 @@ bool dcn20_set_input_transfer_func(struct dc *dc,
                                        IPP_DEGAMMA_MODE_BYPASS);
                        break;
                case TRANSFER_FUNCTION_PQ:
+                       dpp_base->funcs->dpp_set_degamma(dpp_base, 
IPP_DEGAMMA_MODE_USER_PWL);
+                       cm_helper_translate_curve_to_degamma_hw_format(tf, 
&dpp_base->degamma_params);
+                       dpp_base->funcs->dpp_program_degamma_pwl(dpp_base, 
&dpp_base->degamma_params);
+                       result = true;
+                       break;
                default:
                        result = false;
                        break;
-- 
2.24.0

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