1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 1999-2002 Vojtech Pavlik
*/
#ifndef _GAMEPORT_H
#define _GAMEPORT_H
#include <asm/io.h>
#include <linux/types.h>
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/device.h>
#include <linux/timer.h>
#include <linux/slab.h>
#include <uapi/linux/gameport.h>
struct gameport {
void *port_data; /* Private pointer for gameport drivers */
char name[32];
char phys[32];
int io;
int speed;
int fuzz;
void (*trigger)(struct gameport *);
unsigned char (*read)(struct gameport *);
int (*cooked_read)(struct gameport *, int *, int *);
int (*calibrate)(struct gameport *, int *, int *);
int (*open)(struct gameport *, int);
void (*close)(struct gameport *);
struct timer_list poll_timer;
unsigned int poll_interval; /* in msecs */
spinlock_t timer_lock;
unsigned int poll_cnt;
void (*poll_handler)(struct gameport *);
struct gameport *parent, *child;
struct gameport_driver *drv;
struct mutex drv_mutex; /* protects serio->drv so attributes can pin driver */
struct device dev;
struct list_head node;
};
#define to_gameport_port(d) container_of(d, struct gameport, dev)
struct gameport_driver {
const char *description;
int (*connect)(struct gameport *, struct gameport_driver *drv);
int (*reconnect)(struct gameport *);
void (*disconnect)(struct gameport *);
struct device_driver driver;
bool ignore;
};
#define to_gameport_driver(d) container_of(d, struct gameport_driver, driver)
int gameport_open(struct gameport *gameport, struct gameport_driver *drv, int mode);
void gameport_close(struct gameport *gameport);
#if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
void __gameport_register_port(struct gameport *gameport, struct module *owner);
/* use a define to avoid include chaining to get THIS_MODULE */
#define gameport_register_port(gameport) \
__gameport_register_port(gameport, THIS_MODULE)
void gameport_unregister_port(struct gameport *gameport);
__printf(2, 3)
void gameport_set_phys(struct gameport *gameport, const char *fmt, ...);
#else
static inline void gameport_register_port(struct gameport *gameport)
{
return;
}
static inline void gameport_unregister_port(struct gameport *gameport)
{
return;
}
static inline __printf(2, 3)
void gameport_set_phys(struct gameport *gameport, const char *fmt, ...)
{
return;
}
#endif
static inline struct gameport *gameport_allocate_port(void)
{
struct gameport *gameport = kzalloc(sizeof(struct gameport), GFP_KERNEL);
return gameport;
}
static inline void gameport_free_port(struct gameport *gameport)
{
kfree(gameport);
}
static inline void gameport_set_name(struct gameport *gameport, const char *name)
{
strlcpy(gameport->name, name, sizeof(gameport->name));
}
/*
* Use the following functions to manipulate gameport's per-port
* driver-specific data.
*/
static inline void *gameport_get_drvdata(struct gameport *gameport)
{
return dev_get_drvdata(&gameport->dev);
}
static inline void gameport_set_drvdata(struct gameport *gameport, void *data)
{
dev_set_drvdata(&gameport->dev, data);
}
/*
* Use the following functions to pin gameport's driver in process context
*/
static inline int gameport_pin_driver(struct gameport *gameport)
{
return mutex_lock_interruptible(&gameport->drv_mutex);
}
static inline void gameport_unpin_driver(struct gameport *gameport)
{
mutex_unlock(&gameport->drv_mutex);
}
int __must_check __gameport_register_driver(struct gameport_driver *drv,
struct module *owner, const char *mod_name);
/* use a define to avoid include chaining to get THIS_MODULE & friends */
#define gameport_register_driver(drv) \
__gameport_register_driver(drv, THIS_MODULE, KBUILD_MODNAME)
void gameport_unregister_driver(struct gameport_driver *drv);
/**
* module_gameport_driver() - Helper macro for registering a gameport driver
* @__gameport_driver: gameport_driver struct
*
* Helper macro for gameport drivers which do not do anything special in
* module init/exit. This eliminates a lot of boilerplate. Each module may
* only use this macro once, and calling it replaces module_init() and
* module_exit().
*/
#define module_gameport_driver(__gameport_driver) \
module_driver(__gameport_driver, gameport_register_driver, \
gameport_unregister_driver)
static inline void gameport_trigger(struct gameport *gameport)
{
if (gameport->trigger)
gameport->trigger(gameport);
else
outb(0xff, gameport->io);
}
static inline unsigned char gameport_read(struct gameport *gameport)
{
if (gameport->read)
return gameport->read(gameport);
else
return inb(gameport->io);
}
static inline int gameport_cooked_read(struct gameport *gameport, int *axes, int *buttons)
{
if (gameport->cooked_read)
return gameport->cooked_read(gameport, axes, buttons);
else
return -1;
}
static inline int gameport_calibrate(struct gameport *gameport, int *axes, int *max)
{
if (gameport->calibrate)
return gameport->calibrate(gameport, axes, max);
else
return -1;
}
static inline int gameport_time(struct gameport *gameport, int time)
{
return (time * gameport->speed) / 1000;
}
static inline void gameport_set_poll_handler(struct gameport *gameport, void (*handler)(struct gameport *))
{
gameport->poll_handler = handler;
}
static inline void gameport_set_poll_interval(struct gameport *gameport, unsigned int msecs)
{
gameport->poll_interval = msecs;
}
void gameport_start_polling(struct gameport *gameport);
void gameport_stop_polling(struct gameport *gameport);
#endif
|
