[Intel-gfx] [PATCH v5 2/2] drm/i915/lnl: update the supported plane formats with FBC

[Vinod Govindapillai]

FBC is supported with RGB32 8:8:8:8 with or without alpha

Bspec: 68904, 69560
Signed-off-by: Vinod Govindapillai <vinod.govindapil...@intel.com>
---
 drivers/gpu/drm/i915/display/intel_fbc.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_fbc.c 
b/drivers/gpu/drm/i915/display/intel_fbc.c
index aef5a4f6ad09..9b19fe018bce 100644
--- a/drivers/gpu/drm/i915/display/intel_fbc.c
+++ b/drivers/gpu/drm/i915/display/intel_fbc.c
@@ -903,6 +903,11 @@ static bool pixel_format_is_valid(const struct 
intel_plane_state *plane_state)
                if (IS_G4X(i915))
                        return false;
                return true;
+       case DRM_FORMAT_ARGB8888:
+       case DRM_FORMAT_ABGR8888:
+               if (DISPLAY_VER(i915) >= 20)
+                       return true;
+               fallthrough;
        default:
                return false;
        }
@@ -1132,7 +1137,8 @@ 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