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