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 #include <asm/io.h> 13 #include <linux/list.h> 14 #include <linux/device.h> 15 #include <linux/timer.h> 16 17 struct gameport { 18 19 void *port_data; /* Private pointer for gameport drivers */ 20 char name[32]; 21 char phys[32]; 22 23 int io; 24 int speed; 25 int fuzz; 26 27 void (*trigger)(struct gameport *); 28 unsigned char (*read)(struct gameport *); 29 int (*cooked_read)(struct gameport *, int *, int *); 30 int (*calibrate)(struct gameport *, int *, int *); 31 int (*open)(struct gameport *, int); 32 void (*close)(struct gameport *); 33 34 struct timer_list poll_timer; 35 unsigned int poll_interval; /* in msecs */ 36 spinlock_t timer_lock; 37 unsigned int poll_cnt; 38 void (*poll_handler)(struct gameport *); 39 40 struct gameport *parent, *child; 41 42 struct gameport_driver *drv; 43 struct semaphore drv_sem; /* protects serio->drv so attributes can pin driver */ 44 45 struct device dev; 46 unsigned int registered; /* port has been fully registered with driver core */ 47 48 struct list_head node; 49 }; 50 #define to_gameport_port(d) container_of(d, struct gameport, dev) 51 52 struct gameport_driver { 53 54 void *private; 55 char *description; 56 57 int (*connect)(struct gameport *, struct gameport_driver *drv); 58 int (*reconnect)(struct gameport *); 59 void (*disconnect)(struct gameport *); 60 61 struct device_driver driver; 62 63 unsigned int ignore; 64 }; 65 #define to_gameport_driver(d) container_of(d, struct gameport_driver, driver) 66 67 int gameport_open(struct gameport *gameport, struct gameport_driver *drv, int mode); 68 void gameport_close(struct gameport *gameport); 69 void gameport_rescan(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 = kcalloc(1, 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 fucntions 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 fucntions to pin gameport's driver in process context 137 */ 138 static inline int gameport_pin_driver(struct gameport *gameport) 139 { 140 return down_interruptible(&gameport->drv_sem); 141 } 142 143 static inline void gameport_unpin_driver(struct gameport *gameport) 144 { 145 up(&gameport->drv_sem); 146 } 147 148 void __gameport_register_driver(struct gameport_driver *drv, struct module *owner); 149 static inline void gameport_register_driver(struct gameport_driver *drv) 150 { 151 __gameport_register_driver(drv, THIS_MODULE); 152 } 153 154 void gameport_unregister_driver(struct gameport_driver *drv); 155 156 #define GAMEPORT_MODE_DISABLED 0 157 #define GAMEPORT_MODE_RAW 1 158 #define GAMEPORT_MODE_COOKED 2 159 160 #define GAMEPORT_ID_VENDOR_ANALOG 0x0001 161 #define GAMEPORT_ID_VENDOR_MADCATZ 0x0002 162 #define GAMEPORT_ID_VENDOR_LOGITECH 0x0003 163 #define GAMEPORT_ID_VENDOR_CREATIVE 0x0004 164 #define GAMEPORT_ID_VENDOR_GENIUS 0x0005 165 #define GAMEPORT_ID_VENDOR_INTERACT 0x0006 166 #define GAMEPORT_ID_VENDOR_MICROSOFT 0x0007 167 #define GAMEPORT_ID_VENDOR_THRUSTMASTER 0x0008 168 #define GAMEPORT_ID_VENDOR_GRAVIS 0x0009 169 #define GAMEPORT_ID_VENDOR_GUILLEMOT 0x000a 170 171 static inline void gameport_trigger(struct gameport *gameport) 172 { 173 if (gameport->trigger) 174 gameport->trigger(gameport); 175 else 176 outb(0xff, gameport->io); 177 } 178 179 static inline unsigned char gameport_read(struct gameport *gameport) 180 { 181 if (gameport->read) 182 return gameport->read(gameport); 183 else 184 return inb(gameport->io); 185 } 186 187 static inline int gameport_cooked_read(struct gameport *gameport, int *axes, int *buttons) 188 { 189 if (gameport->cooked_read) 190 return gameport->cooked_read(gameport, axes, buttons); 191 else 192 return -1; 193 } 194 195 static inline int gameport_calibrate(struct gameport *gameport, int *axes, int *max) 196 { 197 if (gameport->calibrate) 198 return gameport->calibrate(gameport, axes, max); 199 else 200 return -1; 201 } 202 203 static inline int gameport_time(struct gameport *gameport, int time) 204 { 205 return (time * gameport->speed) / 1000; 206 } 207 208 static inline void gameport_set_poll_handler(struct gameport *gameport, void (*handler)(struct gameport *)) 209 { 210 gameport->poll_handler = handler; 211 } 212 213 static inline void gameport_set_poll_interval(struct gameport *gameport, unsigned int msecs) 214 { 215 gameport->poll_interval = msecs; 216 } 217 218 void gameport_start_polling(struct gameport *gameport); 219 void gameport_stop_polling(struct gameport *gameport); 220 221 #endif 222