net: mdio: mdio-bitbang: Separate C22 and C45 transactions

The bitbbanging bus driver can perform both C22 and C45 transfers.
Create separate functions for each and register the C45 versions using
the new driver API calls.

The SH Ethernet driver places wrappers around these functions. In
order to not break boards which might be using C45, add similar
wrappers for C45 operations.

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Andrew Lunn
2023-01-09 16:30:46 +01:00
committed by Jakub Kicinski
parent ce30fa56cb
commit 002dd3de09
4 changed files with 130 additions and 40 deletions

View File

@@ -38,8 +38,10 @@ struct mdiobb_ctrl {
u8 op_c22_write;
};
int mdiobb_read(struct mii_bus *bus, int phy, int reg);
int mdiobb_write(struct mii_bus *bus, int phy, int reg, u16 val);
int mdiobb_read_c22(struct mii_bus *bus, int phy, int reg);
int mdiobb_write_c22(struct mii_bus *bus, int phy, int reg, u16 val);
int mdiobb_read_c45(struct mii_bus *bus, int devad, int phy, int reg);
int mdiobb_write_c45(struct mii_bus *bus, int devad, int phy, int reg, u16 val);
/* The returned bus is not yet registered with the phy layer. */
struct mii_bus *alloc_mdio_bitbang(struct mdiobb_ctrl *ctrl);