[PATCH v3 04/11] drm/mediatek: Add secure identify flag and funcution to mtk_drm_plane

[Jason-JH . Lin]

Add is_sec flag to identify current mtk_drm_plane is secure.
Add mtk_plane_is_sec_fb() to check current drm_framebuffer is secure.

Signed-off-by: Jason-JH.Lin <jason-jh....@mediatek.com>
---
 drivers/gpu/drm/mediatek/mtk_drm_plane.c | 19 +++++++++++++++++++
 drivers/gpu/drm/mediatek/mtk_drm_plane.h |  2 ++
 2 files changed, 21 insertions(+)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.c 
b/drivers/gpu/drm/mediatek/mtk_drm_plane.c
index ddc9355b06d5..d4d515627ca4 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_plane.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.c
@@ -210,6 +210,7 @@ static void mtk_plane_update_new_state(struct 
drm_plane_state *new_state,
        mtk_plane_state->pending.height = drm_rect_height(&new_state->dst);
        mtk_plane_state->pending.rotation = new_state->rotation;
        mtk_plane_state->pending.color_encoding = new_state->color_encoding;
+       mtk_plane_state->pending.is_secure = mtk_plane_fb_is_secure(fb);
 }
 
 static void mtk_plane_atomic_async_update(struct drm_plane *plane,
@@ -348,3 +349,21 @@ int mtk_plane_init(struct drm_device *dev, struct 
drm_plane *plane,
 
        return 0;
 }
+
+bool mtk_plane_fb_is_secure(struct drm_framebuffer *fb)
+{
+       struct drm_gem_object *gem = NULL;
+       struct mtk_drm_gem_obj *mtk_gem = NULL;
+
+       if (!fb)
+               return false;
+
+       gem = fb->obj[0];
+       if (!gem)
+               return false;
+
+       mtk_gem = to_mtk_gem_obj(gem);
+
+       return mtk_gem->secure;
+}
+
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.h 
b/drivers/gpu/drm/mediatek/mtk_drm_plane.h
index 99aff7da0831..5a330797b5db 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_plane.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.h
@@ -33,6 +33,7 @@ struct mtk_plane_pending_state {
        bool                            async_dirty;
        bool                            async_config;
        enum drm_color_encoding         color_encoding;
+       bool                            is_secure;
 };
 
 struct mtk_plane_state {
@@ -46,6 +47,7 @@ to_mtk_plane_state(struct drm_plane_state *state)
        return container_of(state, struct mtk_plane_state, base);
 }
 
+bool mtk_plane_fb_is_secure(struct drm_framebuffer *fb);
 int mtk_plane_init(struct drm_device *dev, struct drm_plane *plane,
                   unsigned long possible_crtcs, enum drm_plane_type type,
                   unsigned int supported_rotations, const u32 *formats,
-- 
2.18.0