MAX_PLANE          21 drivers/gpu/drm/exynos/exynos_drm_drv.h #define MAX_PLANE	5
MAX_PLANE         129 drivers/gpu/drm/i915/gvt/display.h 	MAX_PLANE
MAX_PLANE          16 drivers/gpu/drm/msm/msm_kms.h #define MAX_PLANE	4