33 ///     dev.read(C45::new(Mmd::PMAPMD, 0));
85     /// MMD Register control.
87     /// MMD Register address data.
139 pub struct Mmd(u8);  struct
141 impl Mmd {  impl
143     pub const PMAPMD: Self = Mmd(uapi::MDIO_MMD_PMAPMD as u8);
145     pub const WIS: Self = Mmd(uapi::MDIO_MMD_WIS as u8);
147     pub const PCS: Self = Mmd(uapi::MDIO_MMD_PCS as u8);
149     pub const PHYXS: Self = Mmd(uapi::MDIO_MMD_PHYXS as u8);
151     pub const DTEXS: Self = Mmd(uapi::MDIO_MMD_DTEXS as u8);
153     pub const TC: Self = Mmd(uapi::MDIO_MMD_TC as u8);
155     pub const AN: Self = Mmd(uapi::MDIO_MMD_AN as u8);
157     pub const SEPARATED_PMA1: Self = Mmd(8);
159     pub const SEPARATED_PMA2: Self = Mmd(9);
161     pub const SEPARATED_PMA3: Self = Mmd(10);
163     pub const SEPARATED_PMA4: Self = Mmd(11);
165     pub const OFDM_PMAPMD: Self = Mmd(12);
167     pub const POWER_UNIT: Self = Mmd(13);
169     pub const C22_EXT: Self = Mmd(uapi::MDIO_MMD_C22EXT as u8);
171     pub const VEND1: Self = Mmd(uapi::MDIO_MMD_VEND1 as u8);
173     pub const VEND2: Self = Mmd(uapi::MDIO_MMD_VEND2 as u8);
178 /// Clause 45 uses a 5-bit device address to access a specific MMD within
180 /// that device. `C45` represents this by storing a [`Mmd`] and
183     devad: Mmd,
189     pub fn new(devad: Mmd, regnum: u16) -> Self {  in new()  argument