[PATCH 09/10] drm/i915/psr: Remove DSB_SKIP_WAITS_EN chicken bit

[Jouni Högander]

We have different approach on how flip is considered being complete. We are
waiting for vblank on DSB and generate interrupt when it happens and this
interrupt is considered as indication of completion -> we definitely do not
want to skip vblank wait.

Also not skipping scanline wait shouldn't cause any problems if we are in
DEEP_SLEEP PIPEDSL register is returning 0 -> evasion does nothing and if
we are not in DEEP_SLEEP evasion works same way as without PSR.

Signed-off-by: Jouni Högander <jouni.hogander at intel.com>
---
 drivers/gpu/drm/i915/display/intel_dsb.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dsb.c b/drivers/gpu/drm/i915/display/intel_dsb.c
index e6f8fc743fb4..8b7438032878 100644
--- a/drivers/gpu/drm/i915/display/intel_dsb.c
+++ b/drivers/gpu/drm/i915/display/intel_dsb.c
@@ -177,13 +177,12 @@ static u32 dsb_chicken(struct intel_atomic_state *state,
 		       struct intel_crtc *crtc)
 {
 	if (pre_commit_is_vrr_active(state, crtc))
-		return DSB_SKIP_WAITS_EN |
-			DSB_CTRL_WAIT_SAFE_WINDOW |
+		return DSB_CTRL_WAIT_SAFE_WINDOW |
 			DSB_CTRL_NO_WAIT_VBLANK |
 			DSB_INST_WAIT_SAFE_WINDOW |
 			DSB_INST_NO_WAIT_VBLANK;
 	else
-		return DSB_SKIP_WAITS_EN;
+		return 0;
 }
 
 static bool assert_dsb_has_room(struct intel_dsb *dsb)
-- 
2.34.1