layer_on and layer_off both are unused external function,
remove them from mtk_ddp_comp_funcs structure.

Signed-off-by: Bibby Hsieh <bibby.hs...@mediatek.com>
Reviewed-by: CK Hu <ck...@mediatek.com>
---
 drivers/gpu/drm/mediatek/mtk_disp_ovl.c     |  2 --
 drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | 16 ----------------
 2 files changed, 18 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c 
b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
index 722a5adb79dc..8a32248671c3 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
@@ -314,8 +314,6 @@ static const struct mtk_ddp_comp_funcs mtk_disp_ovl_funcs = 
{
        .disable_vblank = mtk_ovl_disable_vblank,
        .supported_rotations = mtk_ovl_supported_rotations,
        .layer_nr = mtk_ovl_layer_nr,
-       .layer_on = mtk_ovl_layer_on,
-       .layer_off = mtk_ovl_layer_off,
        .layer_check = mtk_ovl_layer_check,
        .layer_config = mtk_ovl_layer_config,
        .bgclr_in_on = mtk_ovl_bgclr_in_on,
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h 
b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
index 19a955ab0748..dbfb90e9b9cf 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
@@ -81,8 +81,6 @@ struct mtk_ddp_comp_funcs {
        void (*unprepare)(struct mtk_ddp_comp *comp);
        unsigned int (*supported_rotations)(struct mtk_ddp_comp *comp);
        unsigned int (*layer_nr)(struct mtk_ddp_comp *comp);
-       void (*layer_on)(struct mtk_ddp_comp *comp, unsigned int idx);
-       void (*layer_off)(struct mtk_ddp_comp *comp, unsigned int idx);
        int (*layer_check)(struct mtk_ddp_comp *comp,
                           unsigned int idx,
                           struct mtk_plane_state *state);
@@ -165,20 +163,6 @@ static inline unsigned int mtk_ddp_comp_layer_nr(struct 
mtk_ddp_comp *comp)
        return 0;
 }
 
-static inline void mtk_ddp_comp_layer_on(struct mtk_ddp_comp *comp,
-                                        unsigned int idx)
-{
-       if (comp->funcs && comp->funcs->layer_on)
-               comp->funcs->layer_on(comp, idx);
-}
-
-static inline void mtk_ddp_comp_layer_off(struct mtk_ddp_comp *comp,
-                                         unsigned int idx)
-{
-       if (comp->funcs && comp->funcs->layer_off)
-               comp->funcs->layer_off(comp, idx);
-}
-
 static inline int mtk_ddp_comp_layer_check(struct mtk_ddp_comp *comp,
                                           unsigned int idx,
                                           struct mtk_plane_state *state)
-- 
2.18.0
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