GL_POS_X_SHIFT     36 drivers/gpu/drm/zte/zx_plane_regs.h #define GL_POS_X_MASK			(0x1fff << GL_POS_X_SHIFT)
GL_POS_X_SHIFT     42 drivers/gpu/drm/zte/zx_plane_regs.h #define GL_POS_X(x)	(((x) << GL_POS_X_SHIFT) & GL_POS_X_MASK)