include/linux/gameport.h

14 #include <uapi/linux/gameport.h>
16 struct gameport {
18 	void *port_data;	/* Private pointer for gameport drivers */
26 	void (*trigger)(struct gameport *);
27 	unsigned char (*read)(struct gameport *);
28 	int (*cooked_read)(struct gameport *, int *, int *);
29 	int (*calibrate)(struct gameport *, int *, int *);
30 	int (*open)(struct gameport *, int);
31 	void (*close)(struct gameport *);
37 	void (*poll_handler)(struct gameport *);
39 	struct gameport *parent, *child;
48 #define to_gameport_port(d)	container_of(d, struct gameport, dev)
53 	int (*connect)(struct gameport *, struct gameport_driver *drv);
54 	int (*reconnect)(struct gameport *);
55 	void (*disconnect)(struct gameport *);
63 int gameport_open(struct gameport *gameport, struct gameport_driver *drv, int mode);
64 void gameport_close(struct gameport *gameport);
68 void __gameport_register_port(struct gameport *gameport, struct module *owner);
70 #define gameport_register_port(gameport) \
71 	__gameport_register_port(gameport, THIS_MODULE)
73 void gameport_unregister_port(struct gameport *gameport);
76 void gameport_set_phys(struct gameport *gameport, const char *fmt, ...);
80 static inline void gameport_register_port(struct gameport *gameport)
85 static inline void gameport_unregister_port(struct gameport *gameport)
91 void gameport_set_phys(struct gameport *gameport, const char *fmt, ...)
98 static inline struct gameport *gameport_allocate_port(void)
100 	struct gameport *gameport = kzalloc(sizeof(struct gameport), GFP_KERNEL);
102 	return gameport;
105 static inline void gameport_free_port(struct gameport *gameport)
107 	kfree(gameport);
110 static inline void gameport_set_name(struct gameport *gameport, const char *name)
112 	strscpy(gameport->name, name, sizeof(gameport->name));
116  * Use the following functions to manipulate gameport's per-port
119 static inline void *gameport_get_drvdata(struct gameport *gameport)
121 	return dev_get_drvdata(&gameport->dev);
124 static inline void gameport_set_drvdata(struct gameport *gameport, void *data)
126 	dev_set_drvdata(&gameport->dev, data);
130  * Use the following functions to pin gameport's driver in process context
132 static inline int gameport_pin_driver(struct gameport *gameport)
134 	return mutex_lock_interruptible(&gameport->drv_mutex);
137 static inline void gameport_unpin_driver(struct gameport *gameport)
139 	mutex_unlock(&gameport->drv_mutex);
152  * module_gameport_driver() - Helper macro for registering a gameport driver
155  * Helper macro for gameport drivers which do not do anything special in
165 static inline void gameport_trigger(struct gameport *gameport)
167 	gameport->trigger(gameport);
170 static inline unsigned char gameport_read(struct gameport *gameport)
172 	return gameport->read(gameport);
175 static inline int gameport_cooked_read(struct gameport *gameport, int *axes, int *buttons)
177 	if (gameport->cooked_read)
178 		return gameport->cooked_read(gameport, axes, buttons);
183 static inline int gameport_calibrate(struct gameport *gameport, int *axes, int *max)
185 	if (gameport->calibrate)
186 		return gameport->calibrate(gameport, axes, max);
191 static inline int gameport_time(struct gameport *gameport, int time)
193 	return (time * gameport->speed) / 1000;
196 static inline void gameport_set_poll_handler(struct gameport *gameport, void (*handler)(struct gameport *))
198 	gameport->poll_handler = handler;
201 static inline void gameport_set_poll_interval(struct gameport *gameport, unsigned int msecs)
203 	gameport->poll_interval = msecs;
206 void gameport_start_polling(struct gameport *gameport);
207 void gameport_stop_polling(struct gameport *gameport);