[Intel-gfx] [PATCH 11/13] drm/i915/psr: Don't skip both TP1 and TP2/3 on hsw/bdw

[Ville Syrjala]

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

WA 0479 says: "Do not skip both TP1 and TP2/TP3". Let's just
stick the minimum 100us TP2/3 time in there to avoid that.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_psr.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index d871a7d3357a..072a431ec257 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -627,6 +627,15 @@ static u32 intel_psr1_get_tp_time(struct intel_dp *intel_dp)
 	else
 		val |= EDP_PSR_TP2_TP3_TIME_2500us;
 
+	/*
+	 * WA 0479: hsw,bdw
+	 * "Do not skip both TP1 and TP2/TP3"
+	 */
+	if (DISPLAY_VER(dev_priv) < 9 &&
+	    connector->panel.vbt.psr.tp1_wakeup_time_us == 0 &&
+	    connector->panel.vbt.psr.tp2_tp3_wakeup_time_us == 0)
+		val |= EDP_PSR_TP2_TP3_TIME_100us;
+
 check_tp3_sel:
 	if (intel_dp_source_supports_tps3(dev_priv) &&
 	    drm_dp_tps3_supported(intel_dp->dpcd))
-- 
2.39.2