1#ifndef __LINUX_MDIO_BITBANG_H 2#define __LINUX_MDIO_BITBANG_H 3 4#include <linux/phy.h> 5 6struct module; 7 8struct mdiobb_ctrl; 9 10struct mdiobb_ops { 11 struct module *owner; 12 13 /* Set the Management Data Clock high if level is one, 14 * low if level is zero. 15 */ 16 void (*set_mdc)(struct mdiobb_ctrl *ctrl, int level); 17 18 /* Configure the Management Data I/O pin as an input if 19 * "output" is zero, or an output if "output" is one. 20 */ 21 void (*set_mdio_dir)(struct mdiobb_ctrl *ctrl, int output); 22 23 /* Set the Management Data I/O pin high if value is one, 24 * low if "value" is zero. This may only be called 25 * when the MDIO pin is configured as an output. 26 */ 27 void (*set_mdio_data)(struct mdiobb_ctrl *ctrl, int value); 28 29 /* Retrieve the state Management Data I/O pin. */ 30 int (*get_mdio_data)(struct mdiobb_ctrl *ctrl); 31}; 32 33struct mdiobb_ctrl { 34 const struct mdiobb_ops *ops; 35 /* reset callback */ 36 int (*reset)(struct mii_bus *bus); 37}; 38 39/* The returned bus is not yet registered with the phy layer. */ 40struct mii_bus *alloc_mdio_bitbang(struct mdiobb_ctrl *ctrl); 41 42/* The bus must already have been unregistered. */ 43void free_mdio_bitbang(struct mii_bus *bus); 44 45#endif 46