D_CTRL_MFD_SHIFT
(((x) >> D_CTRL_MFD_SHIFT) & D_CTRL_MFD_MASK)
((x) & ~(D_CTRL_MFD_MASK << D_CTRL_MFD_SHIFT))
((x) | (((val) << D_CTRL_MFD_SHIFT) & \
(D_CTRL_MFD_MASK << D_CTRL_MFD_SHIFT)))