projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| e2ec4581 SW |
2 | #ifndef __LINUX_MDIO_BITBANG_H |
| 3 | #define __LINUX_MDIO_BITBANG_H | |
| 4 | ||
| 5 | #include <linux/phy.h> | |
| de477254 PG |
6 | |
| 7 | struct module; | |
| e2ec4581 SW |
8 | |
| 9 | struct mdiobb_ctrl; | |
| 10 | ||
| 11 | struct mdiobb_ops { | |
| 12 | struct module *owner; | |
| 13 | ||
| 14 | /* Set the Management Data Clock high if level is one, | |
| 15 | * low if level is zero. | |
| 16 | */ | |
| 17 | void (*set_mdc)(struct mdiobb_ctrl *ctrl, int level); | |
| 18 | ||
| 19 | /* Configure the Management Data I/O pin as an input if | |
| 20 | * "output" is zero, or an output if "output" is one. | |
| 21 | */ | |
| 22 | void (*set_mdio_dir)(struct mdiobb_ctrl *ctrl, int output); | |
| 23 | ||
| 24 | /* Set the Management Data I/O pin high if value is one, | |
| 25 | * low if "value" is zero. This may only be called | |
| 26 | * when the MDIO pin is configured as an output. | |
| 27 | */ | |
| 28 | void (*set_mdio_data)(struct mdiobb_ctrl *ctrl, int value); | |
| 29 | ||
| 30 | /* Retrieve the state Management Data I/O pin. */ | |
| 31 | int (*get_mdio_data)(struct mdiobb_ctrl *ctrl); | |
| 32 | }; | |
| 33 | ||
| 34 | struct mdiobb_ctrl { | |
| 35 | const struct mdiobb_ops *ops; | |
| 800fcab8 AL |
36 | unsigned int override_op_c22; |
| 37 | u8 op_c22_read; | |
| 38 | u8 op_c22_write; | |
| e2ec4581 SW |
39 | }; |
| 40 | ||
| 002dd3de AL |
41 | int mdiobb_read_c22(struct mii_bus *bus, int phy, int reg); |
| 42 | int mdiobb_write_c22(struct mii_bus *bus, int phy, int reg, u16 val); | |
| 43 | int mdiobb_read_c45(struct mii_bus *bus, int devad, int phy, int reg); | |
| 44 | int mdiobb_write_c45(struct mii_bus *bus, int devad, int phy, int reg, u16 val); | |
| 8eed01b5 | 45 | |
| e2ec4581 SW |
46 | /* The returned bus is not yet registered with the phy layer. */ |
| 47 | struct mii_bus *alloc_mdio_bitbang(struct mdiobb_ctrl *ctrl); | |
| 48 | ||
| 49 | /* The bus must already have been unregistered. */ | |
| 50 | void free_mdio_bitbang(struct mii_bus *bus); | |
| 51 | ||
| 52 | #endif |