[PATCH v8 13/13] drm/i915/psr: Allow DSB usage when PSR is enabled

[Jouni Högander]

Now as we have correct PSR2_MAN_TRK_CTL handling in place we can allow DSB
usage also when PSR is enabled for LunarLake onwards.

v2: rebase

Signed-off-by: Jouni Högander <jouni.hogander at intel.com>
Reviewed-by: Animesh Manna <animesh.manna at intel.com>
---
 drivers/gpu/drm/i915/display/intel_display.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index f0cfd291eba5..19228230fca9 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -7684,6 +7684,7 @@ static void intel_atomic_prepare_plane_clear_colors(struct intel_atomic_state *s
 static void intel_atomic_dsb_prepare(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);
 	struct intel_crtc_state *new_crtc_state =
@@ -7699,7 +7700,7 @@ static void intel_atomic_dsb_prepare(struct intel_atomic_state *state,
 	new_crtc_state->use_dsb =
 		new_crtc_state->update_planes &&
 		!new_crtc_state->do_async_flip &&
-		!new_crtc_state->has_psr &&
+		(DISPLAY_VER(display) >= 20 || !new_crtc_state->has_psr) &&
 		!new_crtc_state->scaler_state.scaler_users &&
 		!old_crtc_state->scaler_state.scaler_users &&
 		!intel_crtc_needs_modeset(new_crtc_state) &&
-- 
2.43.0