include/linux/serio.h

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

File Facts

System
Linux kernel
Corpus path
include/linux/serio.h
Extension
.h
Size
4511 bytes
Lines
168
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: operation-table or driver-model contract
Status
pattern 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

extern const struct bus_type serio_bus;

struct serio {
	void *port_data;

	char name[32];
	char phys[32];
	char firmware_id[128];

	bool manual_bind;

	struct serio_device_id id;

	/* Protects critical sections from port's interrupt handler */
	spinlock_t lock;

	int (*write)(struct serio *, unsigned char);
	int (*open)(struct serio *);
	void (*close)(struct serio *);
	int (*start)(struct serio *);
	void (*stop)(struct serio *);

	struct serio *parent;
	/* Entry in parent->children list */
	struct list_head child_node;
	struct list_head children;
	/* Level of nesting in serio hierarchy */
	unsigned int depth;

	/*
	 * serio->drv is accessed from interrupt handlers; when modifying
	 * caller should acquire serio->drv_mutex and serio->lock.
	 */
	struct serio_driver *drv;
	/* Protects serio->drv so attributes can pin current driver */
	struct mutex drv_mutex;

	struct device dev;

	struct list_head node;

	/*
	 * For use by PS/2 layer when several ports share hardware and
	 * may get indigestion when exposed to concurrent access (i8042).
	 */
	struct mutex *ps2_cmd_mutex;
};
#define to_serio_port(d)	container_of(d, struct serio, dev)

struct serio_driver {
	const char *description;

	const struct serio_device_id *id_table;
	bool manual_bind;

	void (*write_wakeup)(struct serio *);
	irqreturn_t (*interrupt)(struct serio *, unsigned char, unsigned int);
	int  (*connect)(struct serio *, struct serio_driver *drv);
	int  (*reconnect)(struct serio *);
	int  (*fast_reconnect)(struct serio *);
	void (*disconnect)(struct serio *);
	void (*cleanup)(struct serio *);

	struct device_driver driver;
};
#define to_serio_driver(d)	container_of_const(d, struct serio_driver, driver)

int serio_open(struct serio *serio, struct serio_driver *drv);
void serio_close(struct serio *serio);
void serio_rescan(struct serio *serio);
void serio_reconnect(struct serio *serio);
irqreturn_t serio_interrupt(struct serio *serio, unsigned char data, unsigned int flags);

void __serio_register_port(struct serio *serio, struct module *owner);

/* use a define to avoid include chaining to get THIS_MODULE */
#define serio_register_port(serio) \
	__serio_register_port(serio, THIS_MODULE)

void serio_unregister_port(struct serio *serio);
void serio_unregister_child_port(struct serio *serio);

int __must_check __serio_register_driver(struct serio_driver *drv,
				struct module *owner, const char *mod_name);

/* use a define to avoid include chaining to get THIS_MODULE & friends */
#define serio_register_driver(drv) \
	__serio_register_driver(drv, THIS_MODULE, KBUILD_MODNAME)

void serio_unregister_driver(struct serio_driver *drv);

Annotation

Implementation Notes