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/*
* $Id: joydump.c,v 1.1 2002/01/23 06:56:16 jsimmons Exp $
*
* Copyright (c) 1996-2001 Vojtech Pavlik
*/
/*
* This is just a very simple driver that can dump the data
* out of the joystick port into the syslog ...
*/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Should you need to contact me, the author, you can do so either by
* e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
*/
#include <linux/module.h>
#include <linux/gameport.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/init.h>
MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
MODULE_DESCRIPTION("Gameport data dumper module");
MODULE_LICENSE("GPL");
#define BUF_SIZE 256
struct joydump {
unsigned int time;
unsigned char data;
};
static void __devinit joydump_connect(struct gameport *gameport, struct gameport_dev *dev)
{
struct joydump buf[BUF_SIZE];
int axes[4], buttons;
int i, j, t, timeout;
unsigned long flags;
unsigned char u;
printk(KERN_INFO "joydump: ,------------------- START ------------------.\n");
printk(KERN_INFO "joydump: | Dumping gameport%s.\n", gameport->phys);
printk(KERN_INFO "joydump: | Speed: %4d kHz. |\n", gameport->speed);
if (gameport_open(gameport, dev, GAMEPORT_MODE_RAW)) {
printk(KERN_INFO "joydump: | Raw mode not available - trying cooked. |\n");
if (gameport_open(gameport, dev, GAMEPORT_MODE_COOKED)) {
printk(KERN_INFO "joydump: | Cooked not available either. Failing. |\n");
printk(KERN_INFO "joydump: `-------------------- END -------------------'\n");
return;
}
gameport_cooked_read(gameport, axes, &buttons);
for (i = 0; i < 4; i++)
printk(KERN_INFO "joydump: | Axis %d: %4d. |\n", i, axes[i]);
printk(KERN_INFO "joydump: | Buttons %02x. |\n", buttons);
printk(KERN_INFO "joydump: `-------------------- END -------------------'\n");
}
timeout = gameport_time(gameport, 10000); /* 10 ms */
t = 0;
i = 1;
local_irq_save(flags);
u = gameport_read(gameport);
buf[0].data = u;
buf[0].time = t;
gameport_trigger(gameport);
while (i < BUF_SIZE && t < timeout) {
buf[i].data = gameport_read(gameport);
if (buf[i].data ^ u) {
u = buf[i].data;
buf[i].time = t;
i++;
}
t++;
}
local_irq_restore(flags);
/*
* Dump data.
*/
t = i;
printk(KERN_INFO "joydump: >------------------- DATA -------------------<\n");
printk(KERN_INFO "joydump: | index: %3d delta: %3d.%02d us data: ", 0, 0, 0);
for (j = 7; j >= 0; j--)
printk("%d",(buf[0].data >> j) & 1);
printk(" |\n");
for (i = 1; i < t; i++) {
printk(KERN_INFO "joydump: | index: %3d delta: %3d us data: ",
i, buf[i].time - buf[i-1].time);
for (j = 7; j >= 0; j--)
printk("%d",(buf[i].data >> j) & 1);
printk(" |\n");
}
printk(KERN_INFO "joydump: `-------------------- END -------------------'\n");
}
static void __devexit joydump_disconnect(struct gameport *gameport)
{
gameport_close(gameport);
}
static struct gameport_dev joydump_dev = {
.connect = joydump_connect,
.disconnect = joydump_disconnect,
};
static int __init joydump_init(void)
{
gameport_register_device(&joydump_dev);
return 0;
}
static void __exit joydump_exit(void)
{
gameport_unregister_device(&joydump_dev);
}
module_init(joydump_init);
module_exit(joydump_exit);
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