@@ -976,6 +976,25 @@ static void intel_configure_pps_for_dsc_encoder(struct intel_encoder *encoder,
}
}
+static void intel_dp_write_dsc_pps_sdp(struct intel_encoder *encoder,
+ const struct intel_crtc_state *crtc_state)
+{
+ struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
+ struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
+ const struct drm_dsc_config *vdsc_cfg = &crtc_state->dp_dsc_cfg;
+ struct drm_dsc_pps_infoframe dp_dsc_pps_sdp;
+
+ /* Prepare DP SDP PPS header as per DP 1.4 spec, Table 2-123 */
+ drm_dsc_dp_pps_header_init(&dp_dsc_pps_sdp);
+
+ /* Fill the PPS payload bytes as per DSC spec 1.2 Table 4-1 */
+ drm_dsc_pps_infoframe_pack(&dp_dsc_pps_sdp, vdsc_cfg);
+
+ intel_dig_port->write_infoframe(encoder, crtc_state,
+ DP_SDP_PPS, &dp_dsc_pps_sdp,
+ sizeof(dp_dsc_pps_sdp));
+}
+
void intel_dsc_enable(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state)
{
@@ -985,5 +1004,7 @@ void intel_dsc_enable(struct intel_encoder *encoder,
intel_configure_pps_for_dsc_encoder(encoder, crtc_state);
+ intel_dp_write_dsc_pps_sdp(encoder, crtc_state);
+
return;
}