[PATCH 10/11] drm/i915/color: Do not pre-load LUTs with DB registers

[Chaitanya Kumar Borah]

Since Double Buffered LUT registers can be written in active region
no need to preload them.

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

diff --git a/drivers/gpu/drm/i915/display/intel_color.c b/drivers/gpu/drm/i915/display/intel_color.c
index 49429404bd82..ba2b2498d1da 100644
--- a/drivers/gpu/drm/i915/display/intel_color.c
+++ b/drivers/gpu/drm/i915/display/intel_color.c
@@ -2027,9 +2027,13 @@ bool intel_color_uses_dsb(const struct intel_crtc_state *crtc_state)
 static bool intel_can_preload_luts(struct intel_atomic_state *state,
 				   struct intel_crtc *crtc)
 {
+	struct intel_display *display = to_intel_display(state);
 	const struct intel_crtc_state *old_crtc_state =
 		intel_atomic_get_old_crtc_state(state, crtc);
 
+	if (HAS_DOUBLE_BUFFERED_LUT(display))
+		return false;
+
 	return !old_crtc_state->post_csc_lut &&
 		!old_crtc_state->pre_csc_lut;
 }
-- 
2.25.1