[linux-2.6-block.git] / include / linux / mdio-bitbang.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_MDIO_BITBANG_H
#define __LINUX_MDIO_BITBANG_H

#include <linux/phy.h>

struct module;

struct mdiobb_ctrl;

struct mdiobb_ops {
	struct module *owner;

	/* Set the Management Data Clock high if level is one,
	 * low if level is zero.
	 */
	void (*set_mdc)(struct mdiobb_ctrl *ctrl, int level);

	/* Configure the Management Data I/O pin as an input if
	 * "output" is zero, or an output if "output" is one.
	 */
	void (*set_mdio_dir)(struct mdiobb_ctrl *ctrl, int output);

	/* Set the Management Data I/O pin high if value is one,
	 * low if "value" is zero.  This may only be called
	 * when the MDIO pin is configured as an output.
	 */
	void (*set_mdio_data)(struct mdiobb_ctrl *ctrl, int value);

	/* Retrieve the state Management Data I/O pin. */
	int (*get_mdio_data)(struct mdiobb_ctrl *ctrl);
};

struct mdiobb_ctrl {
	const struct mdiobb_ops *ops;
};

/* The returned bus is not yet registered with the phy layer. */
struct mii_bus *alloc_mdio_bitbang(struct mdiobb_ctrl *ctrl);

/* The bus must already have been unregistered. */
void free_mdio_bitbang(struct mii_bus *bus);

#endif
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
de477254 PG	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;
	36	};
	37
	38	/* The returned bus is not yet registered with the phy layer. */
	39	struct mii_bus alloc_mdio_bitbang(struct mdiobb_ctrl ctrl);
	40
	41	/* The bus must already have been unregistered. */
	42	void free_mdio_bitbang(struct mii_bus *bus);
	43
	44	#endif