drm/radeon: implement output csc property for DCE5+

Implement the property for DCE5+ asics. Older asics
require a slightly more complex process.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=83226

Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/radeon/atombios_crtc.c

···
 		radeon_crtc->connector = NULL;
 		return false;
 	}
+	if (radeon_crtc->encoder) {
+		struct radeon_encoder *radeon_encoder =
+			to_radeon_encoder(radeon_crtc->encoder);
+
+		radeon_crtc->output_csc = radeon_encoder->output_csc;
+	}
 	if (!radeon_crtc_scaling_mode_fixup(crtc, mode, adjusted_mode))
 		return false;
 	if (!atombios_crtc_prepare_pll(crtc, adjusted_mode))

drivers/gpu/drm/radeon/radeon_connectors.c

···
 		radeon_property_change_mode(&radeon_encoder->base);
 	}
 
+	if (property == rdev->mode_info.output_csc_property) {
+		if (connector->encoder)
+			radeon_encoder = to_radeon_encoder(connector->encoder);
+		else {
+			struct drm_connector_helper_funcs *connector_funcs = connector->helper_private;
+			radeon_encoder = to_radeon_encoder(connector_funcs->best_encoder(connector));
+		}
+
+		if (radeon_encoder->output_csc == val)
+			return 0;
+
+		radeon_encoder->output_csc = val;
+
+		if (connector->encoder->crtc) {
+			struct drm_crtc *crtc  = connector->encoder->crtc;
+			struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
+			struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
+
+			radeon_crtc->output_csc = radeon_encoder->output_csc;
+
+			(*crtc_funcs->load_lut)(crtc);
+		}
+	}
+
 	return 0;
 }
 
···
 			drm_object_attach_property(&radeon_connector->base.base,
 						   dev->mode_config.scaling_mode_property,
 						   DRM_MODE_SCALE_NONE);
+			if (ASIC_IS_DCE5(rdev))
+				drm_object_attach_property(&radeon_connector->base.base,
+							   rdev->mode_info.output_csc_property,
+							   RADEON_OUTPUT_CSC_BYPASS);
 			break;
 		case DRM_MODE_CONNECTOR_DVII:
 		case DRM_MODE_CONNECTOR_DVID:
···
 				drm_object_attach_property(&radeon_connector->base.base,
 							   rdev->mode_info.audio_property,
 							   RADEON_AUDIO_AUTO);
+			if (ASIC_IS_DCE5(rdev))
+				drm_object_attach_property(&radeon_connector->base.base,
+							   rdev->mode_info.output_csc_property,
+							   RADEON_OUTPUT_CSC_BYPASS);
 
 			subpixel_order = SubPixelHorizontalRGB;
 			connector->interlace_allowed = true;
···
 				drm_object_attach_property(&radeon_connector->base.base,
 							   dev->mode_config.scaling_mode_property,
 							   DRM_MODE_SCALE_NONE);
+			if (ASIC_IS_DCE5(rdev))
+				drm_object_attach_property(&radeon_connector->base.base,
+							   rdev->mode_info.output_csc_property,
+							   RADEON_OUTPUT_CSC_BYPASS);
 			/* no HPD on analog connectors */
 			radeon_connector->hpd.hpd = RADEON_HPD_NONE;
 			connector->polled = DRM_CONNECTOR_POLL_CONNECT;
···
 				drm_object_attach_property(&radeon_connector->base.base,
 							   dev->mode_config.scaling_mode_property,
 							   DRM_MODE_SCALE_NONE);
+			if (ASIC_IS_DCE5(rdev))
+				drm_object_attach_property(&radeon_connector->base.base,
+							   rdev->mode_info.output_csc_property,
+							   RADEON_OUTPUT_CSC_BYPASS);
 			/* no HPD on analog connectors */
 			radeon_connector->hpd.hpd = RADEON_HPD_NONE;
 			connector->interlace_allowed = true;
···
 							      rdev->mode_info.load_detect_property,
 							      1);
 			}
+			if (ASIC_IS_DCE5(rdev))
+				drm_object_attach_property(&radeon_connector->base.base,
+							   rdev->mode_info.output_csc_property,
+							   RADEON_OUTPUT_CSC_BYPASS);
 			connector->interlace_allowed = true;
 			if (connector_type == DRM_MODE_CONNECTOR_DVII)
 				connector->doublescan_allowed = true;
···
 							   rdev->mode_info.audio_property,
 							   RADEON_AUDIO_AUTO);
 			}
+			if (ASIC_IS_DCE5(rdev))
+				drm_object_attach_property(&radeon_connector->base.base,
+							   rdev->mode_info.output_csc_property,
+							   RADEON_OUTPUT_CSC_BYPASS);
 			subpixel_order = SubPixelHorizontalRGB;
 			connector->interlace_allowed = true;
 			if (connector_type == DRM_MODE_CONNECTOR_HDMIB)
···
 							   rdev->mode_info.audio_property,
 							   RADEON_AUDIO_AUTO);
 			}
+			if (ASIC_IS_DCE5(rdev))
+				drm_object_attach_property(&radeon_connector->base.base,
+							   rdev->mode_info.output_csc_property,
+							   RADEON_OUTPUT_CSC_BYPASS);
 			connector->interlace_allowed = true;
 			/* in theory with a DP to VGA converter... */
 			connector->doublescan_allowed = false;

drivers/gpu/drm/radeon/radeon_display.c

···
 	       (NI_GRPH_REGAMMA_MODE(NI_REGAMMA_BYPASS) |
 		NI_OVL_REGAMMA_MODE(NI_REGAMMA_BYPASS)));
 	WREG32(NI_OUTPUT_CSC_CONTROL + radeon_crtc->crtc_offset,
-	       (NI_OUTPUT_CSC_GRPH_MODE(NI_OUTPUT_CSC_BYPASS) |
+	       (NI_OUTPUT_CSC_GRPH_MODE(radeon_crtc->output_csc) |
 		NI_OUTPUT_CSC_OVL_MODE(NI_OUTPUT_CSC_BYPASS)));
 	/* XXX match this to the depth of the crtc fmt block, move to modeset? */
 	WREG32(0x6940 + radeon_crtc->crtc_offset, 0);

drivers/gpu/drm/radeon/radeon_mode.h

···
 	u32 wm_low;
 	u32 wm_high;
 	struct drm_display_mode hw_mode;
+	enum radeon_output_csc output_csc;
 };
 
 struct radeon_encoder_primary_dac {
···
 	bool is_ext_encoder;
 	u16 caps;
 	struct radeon_audio_funcs *audio;
+	enum radeon_output_csc output_csc;
 };
 
 struct radeon_connector_atom_dig {