[PATCH 20/21] drm/i915/mst: Read out FEC state

[Ankit Nautiyal]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

The MST codepath is missing FEC readout. Add it.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
Reviewed-by: Luca Coelho <luciano.coelho at intel.com>
---
 drivers/gpu/drm/i915/display/intel_ddi.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 84bbf854337a..dbc0315d8b75 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -3762,6 +3762,11 @@ static void intel_ddi_read_func_ctl(struct intel_encoder *encoder,
 		intel_cpu_transcoder_get_m1_n1(crtc, cpu_transcoder,
 					       &pipe_config->dp_m_n);
 
+		if (DISPLAY_VER(dev_priv) >= 11)
+			pipe_config->fec_enable =
+				intel_de_read(dev_priv,
+					      dp_tp_ctl_reg(encoder, pipe_config)) & DP_TP_CTL_FEC_ENABLE;
+
 		pipe_config->infoframes.enable |=
 			intel_hdmi_infoframes_enabled(encoder, pipe_config);
 		break;
-- 
2.40.1