AR5K_AR5210_PHY_NF_M
#define AR5K_AR5210_PHY_NF_RVAL(_n) (((_n) >> 19) & AR5K_AR5210_PHY_NF_M)
#define AR5K_AR5210_PHY_NF_AVAL(_n) (-((_n) ^ AR5K_AR5210_PHY_NF_M) + 1)