include/linux/mdio-bitbang.h

Source file repositories/reference/linux-study-clean/include/linux/mdio-bitbang.h

File Facts

System
Linux kernel
Corpus path
include/linux/mdio-bitbang.h
Extension
.h
Size
1498 bytes
Lines
53
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

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;
	unsigned int override_op_c22;
	u8 op_c22_read;
	u8 op_c22_write;
};

int mdiobb_read_c22(struct mii_bus *bus, int phy, int reg);
int mdiobb_write_c22(struct mii_bus *bus, int phy, int reg, u16 val);
int mdiobb_read_c45(struct mii_bus *bus, int devad, int phy, int reg);
int mdiobb_write_c45(struct mii_bus *bus, int devad, int phy, int reg, u16 val);

/* 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

Annotation

Implementation Notes