msm_framebuffer_bo
struct drm_gem_object *msm_framebuffer_bo(struct drm_framebuffer *fb, int plane);
bo = msm_framebuffer_bo(fb, 0);
struct drm_gem_object *bo = msm_framebuffer_bo(helper->fb, 0);
struct drm_gem_object *bo = msm_framebuffer_bo(fb, 0);