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 230