/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __LINUX_MDIO_BITBANG_H #define __LINUX_MDIO_BITBANG_H #include <linux/phy.h> struct module; struct mdiobb_ctrl; struct mdiobb_ops { struct module *owner; /* Set the Management Data Clock high if level is one, * low if level is zero. */ void (*set_mdc)(struct mdiobb_ctrl *ctrl, int level); /* Configure the Management Data I/O pin as an input if * "output" is zero, or an output if "output" is one. */ void (*set_mdio_dir)(struct mdiobb_ctrl *ctrl, int output); /* Set the Management Data I/O pin high if value is one, * low if "value" is zero. This may only be called * when the MDIO pin is configured as an output. */ void (*set_mdio_data)(struct mdiobb_ctrl *ctrl, int value); /* Retrieve the state Management Data I/O pin. */ int (*get_mdio_data)(struct mdiobb_ctrl *ctrl); }; struct mdiobb_ctrl { const struct mdiobb_ops *ops; }; /* The returned bus is not yet registered with the phy layer. */ struct mii_bus *alloc_mdio_bitbang(struct mdiobb_ctrl *ctrl); /* The bus must already have been unregistered. */ void free_mdio_bitbang(struct mii_bus *bus); #endif