1 /* SPDX-License-Identifier: GPL-2.0 */ 1
2 #ifndef __LINUX_MDIO_BITBANG_H
3 #define __LINUX_MDIO_BITBANG_H
4
5 #include <linux/phy.h>
6
7 struct module;
8
9 struct mdiobb_ctrl;
10
11 struct mdiobb_ops {
12 struct module *owner;
13
14 /* Set the Management Data Clock high
15 * low if level is zero.
16 */
17 void (*set_mdc)(struct mdiobb_ctrl *ct
18
19 /* Configure the Management Data I/O p
20 * "output" is zero, or an output if "
21 */
22 void (*set_mdio_dir)(struct mdiobb_ctr
23
24 /* Set the Management Data I/O pin hig
25 * low if "value" is zero. This may o
26 * when the MDIO pin is configured as
27 */
28 void (*set_mdio_data)(struct mdiobb_ct
29
30 /* Retrieve the state Management Data
31 int (*get_mdio_data)(struct mdiobb_ctr
32 };
33
34 struct mdiobb_ctrl {
35 const struct mdiobb_ops *ops;
36 unsigned int override_op_c22;
37 u8 op_c22_read;
38 u8 op_c22_write;
39 };
40
41 int mdiobb_read_c22(struct mii_bus *bus, int p
42 int mdiobb_write_c22(struct mii_bus *bus, int
43 int mdiobb_read_c45(struct mii_bus *bus, int d
44 int mdiobb_write_c45(struct mii_bus *bus, int
45
46 /* The returned bus is not yet registered with
47 struct mii_bus *alloc_mdio_bitbang(struct mdio
48
49 /* The bus must already have been unregistered
50 void free_mdio_bitbang(struct mii_bus *bus);
51
52 #endif
53
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