[PATCH 2/2] drm/i915/display: Don't wait for vblank for LUT DSB programming

[Chaitanya Kumar Borah]

>From PTL, LUT registers are made double buffered. With this change,
we don't need to wait for vblank to program them. Start DSB1 for
programming them without waiting for vblank.

Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah at intel.com>
---
 drivers/gpu/drm/i915/display/intel_display.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 919e236a9650..9c3fdfcd6759 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -7352,6 +7352,7 @@ static void intel_atomic_dsb_finish(struct intel_atomic_state *state,
 {
 	struct intel_crtc_state *new_crtc_state =
 		intel_atomic_get_new_crtc_state(state, crtc);
+	struct intel_display *display = to_intel_display(state);
 
 	if (!new_crtc_state->use_dsb && !new_crtc_state->dsb_color_vblank)
 		return;
@@ -7408,7 +7409,8 @@ static void intel_atomic_dsb_finish(struct intel_atomic_state *state,
 
 	if (new_crtc_state->dsb_color_vblank)
 		intel_dsb_chain(state, new_crtc_state->dsb_commit,
-				new_crtc_state->dsb_color_vblank, true);
+				new_crtc_state->dsb_color_vblank,
+				HAS_DOUBLE_BUFFERED_LUT(display) ? false : true);
 
 	intel_dsb_finish(new_crtc_state->dsb_commit);
 }
-- 
2.25.1