Commit 9882a4064003 ("drm/mediatek: Disable AFBC support on Mediatek DRM
driver") disabled AFBC support on the MediaTek DRM driver since it was
broken.

With the bugs in the AFBC support now fixed, re-enable the support.

Signed-off-by: Nícolas F. R. A. Prado <[email protected]>
---
 drivers/gpu/drm/mediatek/mtk_plane.c | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_plane.c 
b/drivers/gpu/drm/mediatek/mtk_plane.c
index 8fb08768e8ce..38dd94cdd665 100644
--- a/drivers/gpu/drm/mediatek/mtk_plane.c
+++ b/drivers/gpu/drm/mediatek/mtk_plane.c
@@ -22,6 +22,9 @@
 
 static const u64 modifiers[] = {
        DRM_FORMAT_MOD_LINEAR,
+       DRM_FORMAT_MOD_ARM_AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_32x8 |
+                               AFBC_FORMAT_MOD_SPLIT |
+                               AFBC_FORMAT_MOD_SPARSE),
        DRM_FORMAT_MOD_INVALID,
 };
 
@@ -69,7 +72,26 @@ static bool mtk_plane_format_mod_supported(struct drm_plane 
*plane,
                                           uint32_t format,
                                           uint64_t modifier)
 {
-       return modifier == DRM_FORMAT_MOD_LINEAR;
+       if (modifier == DRM_FORMAT_MOD_LINEAR)
+               return true;
+
+       if (modifier != DRM_FORMAT_MOD_ARM_AFBC(
+                               AFBC_FORMAT_MOD_BLOCK_SIZE_32x8 |
+                               AFBC_FORMAT_MOD_SPLIT |
+                               AFBC_FORMAT_MOD_SPARSE))
+               return false;
+
+       if (format != DRM_FORMAT_XRGB8888 &&
+           format != DRM_FORMAT_ARGB8888 &&
+           format != DRM_FORMAT_BGRX8888 &&
+           format != DRM_FORMAT_BGRA8888 &&
+           format != DRM_FORMAT_ABGR8888 &&
+           format != DRM_FORMAT_XBGR8888 &&
+           format != DRM_FORMAT_RGB888 &&
+           format != DRM_FORMAT_BGR888)
+               return false;
+
+       return true;
 }
 
 static void mtk_plane_destroy_state(struct drm_plane *plane,

-- 
2.51.0

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