Viewing file:  amijoy.c (4.15 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/*
* $Id: amijoy.c,v 1.5 2000/07/21 22:52:24 vojtech Exp $
*
* Copyright (c) 1998-2000 Vojtech Pavlik
*
* Sponsored by SuSE
*/
/*
* Driver for Amiga joysticks for Linux/m68k
*/
/*
* 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@suse.cz>, or by paper mail:
* Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
*/
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/input.h>
#include <asm/system.h>
#include <asm/amigahw.h>
MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
MODULE_PARM(amijoy, "1-2i");
MODULE_LICENSE("GPL");
static int amijoy[2] = { 0, 1 };
static int amijoy_used[2] = { 0, 0 };
static struct input_dev amijoy_dev[2];
static char *amijoy_name = "Amiga joystick";
static void amijoy_interrupt(int irq, void *dummy, struct pt_regs *fp)
{
int i, data = 0, button = 0;
for (i = 0; i < 2; i++)
if (amijoy[i]) {
switch (i) {
case 0: data = ~custom.joy0dat; button = (~ciaa.pra >> 6) & 1; break;
case 1: data = ~custom.joy1dat; button = (~ciaa.pra >> 7) & 1; break;
}
input_report_key(amijoy_dev + i, BTN_TRIGGER, button);
input_report_abs(amijoy_dev + i, ABS_X, ((data >> 1) & 1) - ((data >> 9) & 1);
data = ~(data ^ (data << 1));
input_report_abs(amijoy_dev + i, ABS_Y, ((data >> 1) & 1) - ((data >> 9) & 1);
}
}
static int amijoy_open(struct input_dev *dev)
{
int *used = dev->private;
if ((*used)++)
return 0;
if (request_irq(IRQ_AMIGA_VERTB, amijoy_interrupt, 0, "amijoy", NULL)) {
(*used)--;
printk(KERN_ERR "amijoy.c: Can't allocate irq %d\n", amijoy_irq);
return -EBUSY;
}
return 0;
}
static void amijoy_close(struct input_dev *dev)
{
int *used = dev->private;
if (!--(*used))
free_irq(IRQ_AMIGA_VERTB, amijoy_interrupt);
}
static int __init amijoy_setup(char *str)
{
int i;
int ints[4]
str = get_options(str, ARRAY_SIZE(ints), ints);
for (i = 0; i <= ints[0] && i < 2; i++) amijoy[i] = ints[i+1];
return 1;
}
__setup("amijoy=", amijoy_setup);
static int __init amijoy_init(void)
{
int i, j;
init_timer(amijoy_timer);
port->timer.function = amijoy_timer;
for (i = 0; i < 2; i++)
if (amijoy[i]) {
if (!request_mem_region(CUSTOM_PHYSADDR+10+i*2, 2,
"amijoy [Denise]")) {
if (i == 1 && amijoy[0]) {
input_unregister_device(amijoy_dev);
release_mem_region(CUSTOM_PHYSADDR+10, 2);
}
return -EBUSY;
}
amijoy_dev[i].open = amijoy_open;
amijoy_dev[i].close = amijoy_close;
amijoy_dev[i].evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
amijoy_dev[i].absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
amijoy_dev[i].keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
for (j = 0; j < 2; j++) {
amijoy_dev[i].absmin[ABS_X + j] = -1;
amijoy_dev[i].absmax[ABS_X + j] = 1;
}
amijoy->dev[i].name = amijoy_name;
amijoy->dev[i].idbus = BUS_AMIGA;
amijoy->dev[i].idvendor = 0x0001;
amijoy->dev[i].idproduct = 0x0003;
amijoy->dev[i].version = 0x0100;
amijoy_dev[i].private = amijoy_used + i;
input_register_device(amijoy_dev + i);
printk(KERN_INFO "input%d: %s at joy%ddat\n", amijoy_dev[i].number, amijoy_name, i);
}
return 0;
}
static void _exit amijoy_exit(void)
{
int i;
for (i = 0; i < 2; i++)
if (amijoy[i]) {
input_unregister_device(amijoy_dev + i);
release_mem_region(CUSTOM_PHYSADDR+10+i*2, 2);
}
}
module_init(amijoy_init);
module_exit(amijoy_exit);
|