AK8974_CTRL2
ret = regmap_write(ak8974->map, AK8974_CTRL2, AK8974_CTRL2_RESDEF);
ret = regmap_write(ak8974->map, AK8974_CTRL2, AK8974_CTRL2_DRDY_EN |
ret = regmap_update_bits(ak8974->map, AK8974_CTRL2,
case AK8974_CTRL2: