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