For LNL onwards, FBC can be supported on planes with per
pixel alpha
Bspec: 69560
Signed-off-by: Vinod Govindapillai <vinod.govindapillai@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_fbc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_fbc.c b/drivers/gpu/drm/i915/display/intel_fbc.c
index 62f59630d410..f36eb8652d3c 100644
--- a/drivers/gpu/drm/i915/display/intel_fbc.c
+++ b/drivers/gpu/drm/i915/display/intel_fbc.c
@@ -1224,7 +1224,8 @@ static int intel_fbc_check_plane(struct intel_atomic_state *state,
return 0;
}
- if (plane_state->hw.pixel_blend_mode != DRM_MODE_BLEND_PIXEL_NONE &&
+ if (DISPLAY_VER(i915) < 20 &&
+ plane_state->hw.pixel_blend_mode != DRM_MODE_BLEND_PIXEL_NONE &&
fb->format->has_alpha) {
plane_state->no_fbc_reason = "per-pixel alpha not supported";
return 0;
--
2.34.1
