Add ACT handling for 128b/132b SST.
This is preparation for enabling 128b/132b SST. This path is not
reachable yet.
Signed-off-by: Jani Nikula <jani.nik...@intel.com>
---
drivers/gpu/drm/i915/display/intel_ddi.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c
b/drivers/gpu/drm/i915/display/intel_ddi.c
index 91e6cd91e91f..7b739b9c5a06 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -3486,6 +3486,19 @@ static void intel_ddi_enable(struct intel_atomic_state
*state,
/* Enable/Disable DP2.0 SDP split config before transcoder */
intel_audio_sdp_split_update(crtc_state);
+ /* 128b/132b SST */
+ if (intel_dp_is_uhbr(crtc_state)) {
+ struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+ intel_ddi_clear_act_sent(encoder, crtc_state);
+
+ intel_de_rmw(display, TRANS_DDI_FUNC_CTL(display,
cpu_transcoder), 0,
+ TRANS_DDI_DP_VC_PAYLOAD_ALLOC);
+
+ intel_ddi_wait_for_act_sent(encoder, crtc_state);
+ drm_dp_dpcd_poll_act_handled(&intel_dp->aux, 0);
+ }
+
intel_enable_transcoder(crtc_state);
intel_ddi_wait_for_fec_status(encoder, crtc_state, true);
--
2.39.5
