include/linux/gameport.h

   1 #ifndef _GAMEPORT_H
   2 #define _GAMEPORT_H
   3
   4 /*
   5  *  Copyright (c) 1999-2002 Vojtech Pavlik
   6  *
   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.
  10  */
  11
  12 #ifdef __KERNEL__
  13 #include <asm/io.h>
  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
  20 struct gameport {
  21
  22         void *port_data;        /* Private pointer for gameport drivers */
  23         char name[32];
  24         char phys[32];
  25
  26         int io;
  27         int speed;
  28         int fuzz;
  29
  30         void (*trigger)(struct gameport *);
  31         unsigned char (*read)(struct gameport *);
  32         int (*cooked_read)(struct gameport *, int *, int *);
  33         int (*calibrate)(struct gameport *, int *, int *);
  34         int (*open)(struct gameport *, int);
  35         void (*close)(struct gameport *);
  36
  37         struct timer_list poll_timer;
  38         unsigned int poll_interval;     /* in msecs */
  39         spinlock_t timer_lock;
  40         unsigned int poll_cnt;
  41         void (*poll_handler)(struct gameport *);
  42
  43         struct gameport *parent, *child;
  44
  45         struct gameport_driver *drv;
  46         struct mutex drv_mutex;         /* protects serio->drv so attributes can pin driver */
  47
  48         struct device dev;
  49         unsigned int registered;        /* port has been fully registered with driver core */
  50
  51         struct list_head node;
  52 };
  53 #define to_gameport_port(d)     container_of(d, struct gameport, dev)
  54
  55 struct gameport_driver {
  56
  57         void *private;
  58         char *description;
  59
  60         int (*connect)(struct gameport *, struct gameport_driver *drv);
  61         int (*reconnect)(struct gameport *);
  62         void (*disconnect)(struct gameport *);
  63
  64         struct device_driver driver;
  65
  66         bool ignore;
  67 };
  68 #define to_gameport_driver(d)   container_of(d, struct gameport_driver, driver)
  69
  70 int gameport_open(struct gameport *gameport, struct gameport_driver *drv, int mode);
  71 void gameport_close(struct gameport *gameport);
  72
  73 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
  74
  75 void __gameport_register_port(struct gameport *gameport, struct module *owner);
  76 static inline void gameport_register_port(struct gameport *gameport)
  77 {
  78         __gameport_register_port(gameport, THIS_MODULE);
  79 }
  80
  81 void gameport_unregister_port(struct gameport *gameport);
  82
  83 void gameport_set_phys(struct gameport *gameport, const char *fmt, ...)
  84         __attribute__ ((format (printf, 2, 3)));
  85
  86 #else
  87
  88 static inline void gameport_register_port(struct gameport *gameport)
  89 {
  90         return;
  91 }
  92
  93 static inline void gameport_unregister_port(struct gameport *gameport)
  94 {
  95         return;
  96 }
  97
  98 static inline void gameport_set_phys(struct gameport *gameport,
  99                                      const char *fmt, ...)
 100 {
 101         return;
 102 }
 103
 104 #endif
 105
 106 static inline struct gameport *gameport_allocate_port(void)
 107 {
 108         struct gameport *gameport = kzalloc(sizeof(struct gameport), GFP_KERNEL);
 109
 110         return gameport;
 111 }
 112
 113 static inline void gameport_free_port(struct gameport *gameport)
 114 {
 115         kfree(gameport);
 116 }
 117
 118 static inline void gameport_set_name(struct gameport *gameport, const char *name)
 119 {
 120         strlcpy(gameport->name, name, sizeof(gameport->name));
 121 }
 122
 123 /*
 124  * Use the following functions to manipulate gameport's per-port
 125  * driver-specific data.
 126  */
 127 static inline void *gameport_get_drvdata(struct gameport *gameport)
 128 {
 129         return dev_get_drvdata(&gameport->dev);
 130 }
 131
 132 static inline void gameport_set_drvdata(struct gameport *gameport, void *data)
 133 {
 134         dev_set_drvdata(&gameport->dev, data);
 135 }
 136
 137 /*
 138  * Use the following functions to pin gameport's driver in process context
 139  */
 140 static inline int gameport_pin_driver(struct gameport *gameport)
 141 {
 142         return mutex_lock_interruptible(&gameport->drv_mutex);
 143 }
 144
 145 static inline void gameport_unpin_driver(struct gameport *gameport)
 146 {
 147         mutex_unlock(&gameport->drv_mutex);
 148 }
 149
 150 int __gameport_register_driver(struct gameport_driver *drv,
 151                                 struct module *owner, const char *mod_name);
 152 static inline int __must_check gameport_register_driver(struct gameport_driver *drv)
 153 {
 154         return __gameport_register_driver(drv, THIS_MODULE, KBUILD_MODNAME);
 155 }
 156
 157 void gameport_unregister_driver(struct gameport_driver *drv);
 158
 159 #endif /* __KERNEL__ */
 160
 161 #define GAMEPORT_MODE_DISABLED          0
 162 #define GAMEPORT_MODE_RAW               1
 163 #define GAMEPORT_MODE_COOKED            2
 164
 165 #define GAMEPORT_ID_VENDOR_ANALOG       0x0001
 166 #define GAMEPORT_ID_VENDOR_MADCATZ      0x0002
 167 #define GAMEPORT_ID_VENDOR_LOGITECH     0x0003
 168 #define GAMEPORT_ID_VENDOR_CREATIVE     0x0004
 169 #define GAMEPORT_ID_VENDOR_GENIUS       0x0005
 170 #define GAMEPORT_ID_VENDOR_INTERACT     0x0006
 171 #define GAMEPORT_ID_VENDOR_MICROSOFT    0x0007
 172 #define GAMEPORT_ID_VENDOR_THRUSTMASTER 0x0008
 173 #define GAMEPORT_ID_VENDOR_GRAVIS       0x0009
 174 #define GAMEPORT_ID_VENDOR_GUILLEMOT    0x000a
 175
 176 #ifdef __KERNEL__
 177
 178 static inline void gameport_trigger(struct gameport *gameport)
 179 {
 180         if (gameport->trigger)
 181                 gameport->trigger(gameport);
 182         else
 183                 outb(0xff, gameport->io);
 184 }
 185
 186 static inline unsigned char gameport_read(struct gameport *gameport)
 187 {
 188         if (gameport->read)
 189                 return gameport->read(gameport);
 190         else
 191                 return inb(gameport->io);
 192 }
 193
 194 static inline int gameport_cooked_read(struct gameport *gameport, int *axes, int *buttons)
 195 {
 196         if (gameport->cooked_read)
 197                 return gameport->cooked_read(gameport, axes, buttons);
 198         else
 199                 return -1;
 200 }
 201
 202 static inline int gameport_calibrate(struct gameport *gameport, int *axes, int *max)
 203 {
 204         if (gameport->calibrate)
 205                 return gameport->calibrate(gameport, axes, max);
 206         else
 207                 return -1;
 208 }
 209
 210 static inline int gameport_time(struct gameport *gameport, int time)
 211 {
 212         return (time * gameport->speed) / 1000;
 213 }
 214
 215 static inline void gameport_set_poll_handler(struct gameport *gameport, void (*handler)(struct gameport *))
 216 {
 217         gameport->poll_handler = handler;
 218 }
 219
 220 static inline void gameport_set_poll_interval(struct gameport *gameport, unsigned int msecs)
 221 {
 222         gameport->poll_interval = msecs;
 223 }
 224
 225 void gameport_start_polling(struct gameport *gameport);
 226 void gameport_stop_polling(struct gameport *gameport);
 227
 228 #endif /* __KERNEL__ */
 229 #endif