[PATCH 5/6] drm/i915/display/xelpd: Implement Wa_14013475917

[José Roberto de Souza]

This workaround requires that VIDEO_DIP_ENABLE_VSC_HSW is never set
with PSR.

BSpec: 54369
BSpec: 54077
Cc: Matt Atwood <matthew.s.atwood at intel.com>
Cc: Gwan-gyeong Mun <gwan-gyeong.mun at intel.com>
Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
---
 drivers/gpu/drm/i915/display/intel_hdmi.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index de7328685d40..3876a52642a4 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -531,6 +531,11 @@ void hsw_write_infoframe(struct intel_encoder *encoder,
 			       hsw_dip_data_reg(dev_priv, cpu_transcoder, type, i >> 2),
 			       0);
 
+	/* Wa_14013475917 */
+	if (DISPLAY_VER(dev_priv) == 13 && crtc_state->has_psr &&
+	    type == DP_SDP_VSC)
+		return;
+
 	val |= hsw_infoframe_enable(type);
 	intel_de_write(dev_priv, ctl_reg, val);
 	intel_de_posting_read(dev_priv, ctl_reg);
-- 
2.31.1