In terms of async flip optimization we don't to allocate
extra ddb space, so lets skip it.
Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_pm.c | 24 ++++++++++++++++++------
1 file changed, 18 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 0b45d1d61d0f..e1594f43bb1b 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -5245,9 +5245,15 @@ skl_allocate_plane_ddb(struct intel_atomic_state *state,
break;
rate = crtc_state->plane_data_rate[plane_id];
- extra = min_t(u16, alloc_size,
- DIV64_U64_ROUND_UP(alloc_size * rate,
- total_data_rate));
+
+ if (IS_DG2(dev_priv) && crtc_state->uapi.async_flip) {
+ extra = 0;
+ } else {
+ extra = min_t(u16, alloc_size,
+ DIV64_U64_ROUND_UP(alloc_size * rate,
+ total_data_rate));
+ }
+
total[plane_id] = wm->wm[level].min_ddb_alloc + extra;
alloc_size -= extra;
total_data_rate -= rate;
@@ -5256,9 +5262,15 @@ skl_allocate_plane_ddb(struct intel_atomic_state *state,
break;
rate = crtc_state->uv_plane_data_rate[plane_id];
- extra = min_t(u16, alloc_size,
- DIV64_U64_ROUND_UP(alloc_size * rate,
- total_data_rate));
+
+ if (IS_DG2(dev_priv) && crtc_state->uapi.async_flip) {
+ extra = 0;
+ } else {
+ extra = min_t(u16, alloc_size,
+ DIV64_U64_ROUND_UP(alloc_size * rate,
+ total_data_rate));
+ }
+
uv_total[plane_id] = wm->uv_wm[level].min_ddb_alloc + extra;
alloc_size -= extra;
total_data_rate -= rate;
--
2.24.1.485.gad05a3d8e5
