The PKG_C_LATENCY Added Wake Time field is not working.
When added wake time is needed, such as for flip queue
DSB execution, increase the PKG_C_LATENCY Pkg C Latency
field by the added wake time.
HSD: 14023564296
WA: 22020432604
Signed-off-by: Animesh Manna <animesh.manna@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/skl_watermark.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/skl_watermark.c b/drivers/gpu/drm/i915/display/skl_watermark.c
index 1a4c1fa24820..9be38ca5346d 100644
--- a/drivers/gpu/drm/i915/display/skl_watermark.c
+++ b/drivers/gpu/drm/i915/display/skl_watermark.c
@@ -2875,6 +2875,12 @@ skl_program_dpkgc_latency(struct drm_i915_private *i915, bool enable_dpkgc)
added_wake_time = 0;
}
+ /* Wa_22020432604 */
+ if (DISPLAY_VER(i915) == 30) {
+ max_latency += added_wake_time;
+ added_wake_time = 0;
+ }
+
clear |= LNL_ADDED_WAKE_TIME_MASK | LNL_PKG_C_LATENCY_MASK;
val |= REG_FIELD_PREP(LNL_PKG_C_LATENCY_MASK, max_latency);
val |= REG_FIELD_PREP(LNL_ADDED_WAKE_TIME_MASK, added_wake_time);
--
2.29.0
