5 * Copyright (c) 1999-2002 Vojtech Pavlik
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published by
9 * the Free Software Foundation.
14 #include <linux/types.h>
15 #include <linux/list.h>
16 #include <linux/mutex.h>
17 #include <linux/device.h>
18 #include <linux/timer.h>
19 #include <linux/slab.h>
23 void *port_data; /* Private pointer for gameport drivers */
31 void (*trigger)(struct gameport *);
32 unsigned char (*read)(struct gameport *);
33 int (*cooked_read)(struct gameport *, int *, int *);
34 int (*calibrate)(struct gameport *, int *, int *);
35 int (*open)(struct gameport *, int);
36 void (*close)(struct gameport *);
38 struct timer_list poll_timer;
39 unsigned int poll_interval; /* in msecs */
40 spinlock_t timer_lock;
41 unsigned int poll_cnt;
42 void (*poll_handler)(struct gameport *);
44 struct gameport *parent, *child;
46 struct gameport_driver *drv;
47 struct mutex drv_mutex; /* protects serio->drv so attributes can pin driver */
51 struct list_head node;
53 #define to_gameport_port(d) container_of(d, struct gameport, dev)
55 struct gameport_driver {
56 const char *description;
58 int (*connect)(struct gameport *, struct gameport_driver *drv);
59 int (*reconnect)(struct gameport *);
60 void (*disconnect)(struct gameport *);
62 struct device_driver driver;
66 #define to_gameport_driver(d) container_of(d, struct gameport_driver, driver)
68 int gameport_open(struct gameport *gameport, struct gameport_driver *drv, int mode);
69 void gameport_close(struct gameport *gameport);
71 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
73 void __gameport_register_port(struct gameport *gameport, struct module *owner);
74 /* use a define to avoid include chaining to get THIS_MODULE */
75 #define gameport_register_port(gameport) \
76 __gameport_register_port(gameport, THIS_MODULE)
78 void gameport_unregister_port(struct gameport *gameport);
81 void gameport_set_phys(struct gameport *gameport, const char *fmt, ...);
85 static inline void gameport_register_port(struct gameport *gameport)
90 static inline void gameport_unregister_port(struct gameport *gameport)
95 static inline __printf(2, 3)
96 void gameport_set_phys(struct gameport *gameport, const char *fmt, ...)
103 static inline struct gameport *gameport_allocate_port(void)
105 struct gameport *gameport = kzalloc(sizeof(struct gameport), GFP_KERNEL);
110 static inline void gameport_free_port(struct gameport *gameport)
115 static inline void gameport_set_name(struct gameport *gameport, const char *name)
117 strlcpy(gameport->name, name, sizeof(gameport->name));
121 * Use the following functions to manipulate gameport's per-port
122 * driver-specific data.
124 static inline void *gameport_get_drvdata(struct gameport *gameport)
126 return dev_get_drvdata(&gameport->dev);
129 static inline void gameport_set_drvdata(struct gameport *gameport, void *data)
131 dev_set_drvdata(&gameport->dev, data);
135 * Use the following functions to pin gameport's driver in process context
137 static inline int gameport_pin_driver(struct gameport *gameport)
139 return mutex_lock_interruptible(&gameport->drv_mutex);
142 static inline void gameport_unpin_driver(struct gameport *gameport)
144 mutex_unlock(&gameport->drv_mutex);
147 int __must_check __gameport_register_driver(struct gameport_driver *drv,
148 struct module *owner, const char *mod_name);
150 /* use a define to avoid include chaining to get THIS_MODULE & friends */
151 #define gameport_register_driver(drv) \
152 __gameport_register_driver(drv, THIS_MODULE, KBUILD_MODNAME)
154 void gameport_unregister_driver(struct gameport_driver *drv);
157 * module_gameport_driver() - Helper macro for registering a gameport driver
158 * @__gameport_driver: gameport_driver struct
160 * Helper macro for gameport drivers which do not do anything special in
161 * module init/exit. This eliminates a lot of boilerplate. Each module may
162 * only use this macro once, and calling it replaces module_init() and
165 #define module_gameport_driver(__gameport_driver) \
166 module_driver(__gameport_driver, gameport_register_driver, \
167 gameport_unregister_driver)
169 #endif /* __KERNEL__ */
171 #define GAMEPORT_MODE_DISABLED 0
172 #define GAMEPORT_MODE_RAW 1
173 #define GAMEPORT_MODE_COOKED 2
175 #define GAMEPORT_ID_VENDOR_ANALOG 0x0001
176 #define GAMEPORT_ID_VENDOR_MADCATZ 0x0002
177 #define GAMEPORT_ID_VENDOR_LOGITECH 0x0003
178 #define GAMEPORT_ID_VENDOR_CREATIVE 0x0004
179 #define GAMEPORT_ID_VENDOR_GENIUS 0x0005
180 #define GAMEPORT_ID_VENDOR_INTERACT 0x0006
181 #define GAMEPORT_ID_VENDOR_MICROSOFT 0x0007
182 #define GAMEPORT_ID_VENDOR_THRUSTMASTER 0x0008
183 #define GAMEPORT_ID_VENDOR_GRAVIS 0x0009
184 #define GAMEPORT_ID_VENDOR_GUILLEMOT 0x000a
188 static inline void gameport_trigger(struct gameport *gameport)
190 if (gameport->trigger)
191 gameport->trigger(gameport);
193 outb(0xff, gameport->io);
196 static inline unsigned char gameport_read(struct gameport *gameport)
199 return gameport->read(gameport);
201 return inb(gameport->io);
204 static inline int gameport_cooked_read(struct gameport *gameport, int *axes, int *buttons)
206 if (gameport->cooked_read)
207 return gameport->cooked_read(gameport, axes, buttons);
212 static inline int gameport_calibrate(struct gameport *gameport, int *axes, int *max)
214 if (gameport->calibrate)
215 return gameport->calibrate(gameport, axes, max);
220 static inline int gameport_time(struct gameport *gameport, int time)
222 return (time * gameport->speed) / 1000;
225 static inline void gameport_set_poll_handler(struct gameport *gameport, void (*handler)(struct gameport *))
227 gameport->poll_handler = handler;
230 static inline void gameport_set_poll_interval(struct gameport *gameport, unsigned int msecs)
232 gameport->poll_interval = msecs;
235 void gameport_start_polling(struct gameport *gameport);
236 void gameport_stop_polling(struct gameport *gameport);
238 #endif /* __KERNEL__ */