[PATCH 6.6.y 1/4] drm/i915/fbc: Extract intel_fbc_has_fences()

From: Ville Syrjälä <[email protected]>

[ Upstream commit bc34d310b578952d37b5200a7fa7475ab2a2bd5e ]

Pull the "do we have fences?" check into a single helper in the FBC
code. Avoids having to call to outside the display code in multiple
places for this.

Signed-off-by: Ville Syrjälä <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Reviewed-by: Rodrigo Vivi <[email protected]>
Stable-dep-of: bbb15a6b042d ("drm/i915/hdcp: check streams[] bounds before overflow")
Signed-off-by: Sasha Levin <[email protected]>
---
 drivers/gpu/drm/i915/display/intel_fbc.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_fbc.c b/drivers/gpu/drm/i915/display/intel_fbc.c
index 25382022cd276..a6861c3bd224a 100644
--- a/drivers/gpu/drm/i915/display/intel_fbc.c
+++ b/drivers/gpu/drm/i915/display/intel_fbc.c
@@ -223,6 +223,11 @@ static u16 intel_fbc_override_cfb_stride(const struct intel_plane_state *plane_s
 	return 0;
 }
 
+static bool intel_fbc_has_fences(struct drm_i915_private *i915)
+{
+	return intel_gt_support_legacy_fencing(to_gt(i915));
+}
+
 static u32 i8xx_fbc_ctl(struct intel_fbc *fbc)
 {
 	const struct intel_fbc_state *fbc_state = &fbc->state;
@@ -608,7 +613,7 @@ static void ivb_fbc_activate(struct intel_fbc *fbc)
 	else if (DISPLAY_VER(i915) == 9)
 		skl_fbc_program_cfb_stride(fbc);
 
-	if (intel_gt_support_legacy_fencing(to_gt(i915)))
+	if (intel_fbc_has_fences(i915))
 		snb_fbc_program_fence(fbc);
 
 	intel_de_write(i915, ILK_DPFC_CONTROL(fbc->id),
@@ -992,7 +997,7 @@ static void intel_fbc_update_state(struct intel_atomic_state *state,
 	fbc_state->fence_y_offset = intel_plane_fence_y_offset(plane_state);
 
 	drm_WARN_ON(&i915->drm, plane_state->flags & PLANE_HAS_FENCE &&
-		    !intel_gt_support_legacy_fencing(to_gt(i915)));
+		    !intel_fbc_has_fences(i915));
 
 	if (plane_state->flags & PLANE_HAS_FENCE)
 		fbc_state->fence_id =  i915_vma_fence_id(plane_state->ggtt_vma);
-- 
2.53.0