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-rw-r--r--include/linux/mdio-bitbang.h42
1 files changed, 42 insertions, 0 deletions
diff --git a/include/linux/mdio-bitbang.h b/include/linux/mdio-bitbang.h
new file mode 100644
index 000000000000..8ea9a42a4c02
--- /dev/null
+++ b/include/linux/mdio-bitbang.h
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1#ifndef __LINUX_MDIO_BITBANG_H
2#define __LINUX_MDIO_BITBANG_H
3
4#include <linux/phy.h>
5#include <linux/module.h>
6
7struct mdiobb_ctrl;
8
9struct mdiobb_ops {
10 struct module *owner;
11
12 /* Set the Management Data Clock high if level is one,
13 * low if level is zero.
14 */
15 void (*set_mdc)(struct mdiobb_ctrl *ctrl, int level);
16
17 /* Configure the Management Data I/O pin as an input if
18 * "output" is zero, or an output if "output" is one.
19 */
20 void (*set_mdio_dir)(struct mdiobb_ctrl *ctrl, int output);
21
22 /* Set the Management Data I/O pin high if value is one,
23 * low if "value" is zero. This may only be called
24 * when the MDIO pin is configured as an output.
25 */
26 void (*set_mdio_data)(struct mdiobb_ctrl *ctrl, int value);
27
28 /* Retrieve the state Management Data I/O pin. */
29 int (*get_mdio_data)(struct mdiobb_ctrl *ctrl);
30};
31
32struct mdiobb_ctrl {
33 const struct mdiobb_ops *ops;
34};
35
36/* The returned bus is not yet registered with the phy layer. */
37struct mii_bus *alloc_mdio_bitbang(struct mdiobb_ctrl *ctrl);
38
39/* The bus must already have been unregistered. */
40void free_mdio_bitbang(struct mii_bus *bus);
41
42#endif