mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
216 lines
5.4 KiB
216 lines
5.4 KiB
/* 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
|
|
|