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* joy-db9.c Version 0.5V
*
* Copyright (c) 1998 Andree Borrmann
*/
/*
* This is a module for the Linux joystick driver, supporting
* console (Atari, Amstrad, Commodore, Amiga, Sega) joysticks
* and gamepads connected to the parallel port.
*/
/*
* 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
*/
#include <asm/io.h>
#include <asm/system.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/joystick.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/string.h>
#include <linux/delay.h>
MODULE_AUTHOR("Andree Borrmann <A.Borrmann@tu-bs.de>");
MODULE_PARM(js_db9, "2i");
MODULE_PARM(js_db9_2, "2i");
MODULE_PARM(js_db9_3, "2i");
#define JS_MULTI_STICK 0x01
#define JS_MULTI2_STICK 0x02
#define JS_GENESIS_PAD 0x03
#define JS_GENESIS5_PAD 0x05
#define JS_GENESIS6_PAD 0x06
#define JS_SATURN_PAD 0x07
#define JS_MULTI_0802 0x08
#define JS_MAX_PAD 0x09
#define JS_DB9_UP 0x01
#define JS_DB9_DOWN 0x02
#define JS_DB9_LEFT 0x04
#define JS_DB9_RIGHT 0x08
#define JS_DB9_FIRE1 0x10
#define JS_DB9_FIRE2 0x20
#define JS_DB9_FIRE3 0x40
#define JS_DB9_FIRE4 0x80
#define JS_DB9_NORMAL 0x22
#define JS_DB9_NOSELECT 0x20
#define JS_DB9_SATURN0 0x20
#define JS_DB9_SATURN1 0x22
#define JS_DB9_SATURN2 0x24
#define JS_DB9_SATURN3 0x26
#define JS_GENESIS6_DELAY 14
static struct js_port* js_db9_port = NULL;
static int js_db9[] __initdata = { -1, 0 };
static int js_db9_2[] __initdata = { -1, 0 };
static int js_db9_3[] __initdata = { -1, 0 };
struct js_db9_info {
#ifdef USE_PARPORT
struct pardevice *port; /* parport device */
#else
int port; /* hw port */
#endif
int mode; /* pad mode */
};
/*
* js_db9_read() reads and analyzes db9 joystick data.
*/
static int js_db9_read(void *xinfo, int **axes, int **buttons)
{
struct js_db9_info *info = xinfo;
int data;
switch(info->mode)
{
case JS_MULTI_0802:
data = JS_PAR_STATUS(info->port) >> 3;
axes[0][1] = (data&JS_DB9_DOWN ?0:1) - (data&JS_DB9_UP ?0:1);
axes[0][0] = (data&JS_DB9_RIGHT?0:1) - (data&JS_DB9_LEFT?0:1);
buttons[0][0] = (data&JS_DB9_FIRE1?1:0);
break;
case JS_MULTI_STICK:
data = JS_PAR_DATA_IN(info->port);
axes[0][1] = (data&JS_DB9_DOWN ?0:1) - (data&JS_DB9_UP ?0:1);
axes[0][0] = (data&JS_DB9_RIGHT?0:1) - (data&JS_DB9_LEFT?0:1);
buttons[0][0] = (data&JS_DB9_FIRE1?0:1);
break;
case JS_MULTI2_STICK:
data=JS_PAR_DATA_IN(info->port);
axes[0][1] = (data&JS_DB9_DOWN ?0:1) - (data&JS_DB9_UP ?0:1);
axes[0][0] = (data&JS_DB9_RIGHT?0:1) - (data&JS_DB9_LEFT?0:1);
buttons[0][0] = (data&JS_DB9_FIRE1?0:1) | (data&JS_DB9_FIRE2?0:2);
break;
case JS_GENESIS_PAD:
JS_PAR_CTRL_OUT(JS_DB9_NOSELECT, info->port);
data = JS_PAR_DATA_IN(info->port);
axes[0][1] = (data&JS_DB9_DOWN ?0:1) - (data&JS_DB9_UP ?0:1);
axes[0][0] = (data&JS_DB9_RIGHT?0:1) - (data&JS_DB9_LEFT?0:1);
buttons[0][0] = (data&JS_DB9_FIRE1?0:2) | (data&JS_DB9_FIRE2?0:4);
JS_PAR_CTRL_OUT(JS_DB9_NORMAL,info->port);
data=JS_PAR_DATA_IN(info->port);
buttons[0][0] |= (data&JS_DB9_FIRE1?0:1) | (data&JS_DB9_FIRE2?0:8);
break;
case JS_GENESIS5_PAD:
JS_PAR_CTRL_OUT(JS_DB9_NOSELECT,info->port);
data=JS_PAR_DATA_IN(info->port);
axes[0][1] = (data&JS_DB9_DOWN ?0:1) - (data&JS_DB9_UP ?0:1);
axes[0][0] = (data&JS_DB9_RIGHT?0:1) - (data&JS_DB9_LEFT?0:1);
buttons[0][0] = (data&JS_DB9_FIRE1?0:0x02) | (data&JS_DB9_FIRE2?0:0x04);
JS_PAR_CTRL_OUT(JS_DB9_NORMAL, info->port);
data=JS_PAR_DATA_IN(info->port);
buttons[0][0] |= (data&JS_DB9_FIRE1?0:0x01) | (data&JS_DB9_FIRE2?0:0x08) |
(data&JS_DB9_LEFT ?0:0x10) | (data&JS_DB9_RIGHT?0:0x20);
break;
case JS_GENESIS6_PAD:
JS_PAR_CTRL_OUT(JS_DB9_NOSELECT,info->port); /* 1 */
udelay(JS_GENESIS6_DELAY);
data=JS_PAR_DATA_IN(info->port);
axes[0][1] = (data&JS_DB9_DOWN ?0:1) - (data&JS_DB9_UP ?0:1);
axes[0][0] = (data&JS_DB9_RIGHT?0:1) - (data&JS_DB9_LEFT?0:1);
buttons[0][0] = (data&JS_DB9_FIRE1?0:0x02) | (data&JS_DB9_FIRE2?0:0x04);
JS_PAR_CTRL_OUT(JS_DB9_NORMAL, info->port);
udelay(JS_GENESIS6_DELAY);
data=JS_PAR_DATA_IN(info->port);
buttons[0][0] |= (data&JS_DB9_FIRE1?0:0x01) | (data&JS_DB9_FIRE2?0:0x08);
JS_PAR_CTRL_OUT(JS_DB9_NOSELECT, info->port); /* 2 */
udelay(JS_GENESIS6_DELAY);
JS_PAR_CTRL_OUT(JS_DB9_NORMAL, info->port);
udelay(JS_GENESIS6_DELAY);
JS_PAR_CTRL_OUT(JS_DB9_NOSELECT, info->port); /* 3 */
udelay(JS_GENESIS6_DELAY);
JS_PAR_CTRL_OUT(JS_DB9_NORMAL, info->port);
data=JS_PAR_DATA_IN(info->port);
buttons[0][0] |= (data&JS_DB9_LEFT?0:0x10) | (data&JS_DB9_DOWN?0:0x20) | (data&JS_DB9_UP?0:0x40);
udelay(JS_GENESIS6_DELAY);
JS_PAR_CTRL_OUT(JS_DB9_NOSELECT, info->port); /* 4 */
udelay(JS_GENESIS6_DELAY);
JS_PAR_CTRL_OUT(JS_DB9_NORMAL, info->port);
break;
case JS_SATURN_PAD:
JS_PAR_CTRL_OUT(JS_DB9_SATURN0, info->port);
data = JS_PAR_DATA_IN(info->port);
buttons[0][0] = (data&JS_DB9_UP ?0:0x20) | (data&JS_DB9_DOWN ?0:0x10) |
(data&JS_DB9_LEFT?0:0x08) | (data&JS_DB9_RIGHT?0:0x40);
JS_PAR_CTRL_OUT(JS_DB9_SATURN2, info->port);
data = JS_PAR_DATA_IN(info->port);
axes[0][1] = (data&JS_DB9_DOWN ?0:1) - (data&JS_DB9_UP ?0:1);
axes[0][0] = (data&JS_DB9_RIGHT?0:1) - (data&JS_DB9_LEFT?0:1);
JS_PAR_CTRL_OUT(JS_DB9_NORMAL, info->port);
data = JS_PAR_DATA_IN(info->port);
buttons[0][0] |= (data&JS_DB9_UP ?0:0x02) | (data&JS_DB9_DOWN ?0:0x04) |
(data&JS_DB9_LEFT?0:0x01) | (data&JS_DB9_RIGHT?0:0x80);
break;
default:
return -1;
}
return 0;
}
/*
* open callback: claim parport.
*/
int js_db9_open(struct js_dev *dev)
{
struct js_db9_info *info = dev->port->info;
if (!MOD_IN_USE) {
#ifdef USE_PARPORT
if (parport_claim(info->port)) return -EBUSY;
#endif
JS_PAR_ECTRL_OUT(0x35,info->port); /* enable PS/2 mode: */
JS_PAR_CTRL_OUT(JS_DB9_NORMAL,info->port); /* reverse direction, enable Select signal */
}
MOD_INC_USE_COUNT;
return 0;
}
/*
* close callback: release parport
*/
int js_db9_close(struct js_dev *dev)
{
struct js_db9_info *info = dev->port->info;
MOD_DEC_USE_COUNT;
if (!MOD_IN_USE) {
JS_PAR_CTRL_OUT(0x00,info->port); /* normal direction */
JS_PAR_ECTRL_OUT(0x15,info->port); /* enable normal mode */
#ifdef USE_PARPORT
parport_release(info->port);
#endif
}
return 0;
}
#ifdef MODULE
void cleanup_module(void)
{
struct js_db9_info *info;
while (js_db9_port != NULL) {
js_unregister_device(js_db9_port->devs[0]);
info = js_db9_port->info;
#ifdef USE_PARPORT
parport_unregister_device(info->port);
#else
release_region(info->port, 3);
release_region(info->port+0x402, 1);
#endif
js_db9_port = js_unregister_port(js_db9_port);
}
}
#endif
/*
* js_db9_init_corr() initializes correction values of
* db9 gamepads.
*/
static void __init js_db9_init_corr(struct js_corr **corr)
{
int i;
for (i = 0; i < 2; i++) {
corr[0][i].type = JS_CORR_BROKEN;
corr[0][i].prec = 0;
corr[0][i].coef[0] = 0;
corr[0][i].coef[1] = 0;
corr[0][i].coef[2] = (1 << 29);
corr[0][i].coef[3] = (1 << 29);
}
}
/*
* js_db9_probe() probes for db9 gamepads.
*/
static struct js_port __init *js_db9_probe(int *config, struct js_port *port)
{
struct js_db9_info info;
char buttons[JS_MAX_PAD] = {0,1,2,4,0,6,7,8,1};
char *name[JS_MAX_PAD] = {NULL, "Multisystem joystick", "Multisystem joystick (2 fire)", "Genesis pad",
NULL, "Genesis 5 pad", "Genesis 6 pad", "Saturn pad", "Multisystem (0.8.0.2) joystick"};
if (config[0] < 0) return port;
if (config[1] < 0 || config[1] >= JS_MAX_PAD || !name[config[1]]) return port;
#ifdef USE_PARPORT
{
struct parport *pp;
if (config[0] > 0x10)
for (pp=parport_enumerate(); pp != NULL && (pp->base!=config[0]); pp=pp->next);
else
for (pp=parport_enumerate(); pp != NULL && (config[0]>0); pp=pp->next) config[0]--;
if (pp == NULL) {
printk(KERN_ERR "joy-db9: no such parport\n");
return port;
}
if (!(pp->modes & (PARPORT_MODE_PCPS2 | PARPORT_MODE_PCECPPS2))) {
printk(KERN_ERR "js-db9: specified parport is not bidirectional\n");
return port;
}
info.port = parport_register_device(pp, "joystick (db9)", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL);
if (!info.port)
return port;
}
#else
info.port = config[0];
if (check_region(info.port, 3) || check_region(info.port+0x402,1)) return port;
request_region(info.port, 3, "joystick (db9)");
request_region(info.port+0x402, 1, "joystick (db9)");
#endif
info.mode = config[1];
port = js_register_port(port, &info, 1, sizeof(struct js_db9_info), js_db9_read);
#ifdef USE_PARPORT
printk(KERN_INFO "js%d: %s on %s\n",
js_register_device(port, 0, 2, buttons[info.mode], name[info.mode], js_db9_open, js_db9_close),
name[info.mode], info.port->port->name);
#else
printk(KERN_INFO "js%d: %s at %#x\n",
js_register_device(port, 0, 2, buttons[info.mode], name[info.mode], js_db9_open, js_db9_close),
name[info.mode], info.port);
#endif
js_db9_init_corr(port->corr);
return port;
}
#ifndef MODULE
void __init js_db9_setup(char *str, int *ints)
{
int i;
if (!strcmp(str,"js_db9"))
for (i = 0; i <= ints[0] && i < 2; i++) js_db9[i] = ints[i+1];
if (!strcmp(str,"js_db9_2"))
for (i = 0; i <= ints[0] && i < 2; i++) js_db9_2[i] = ints[i+1];
if (!strcmp(str,"js_db9_3"))
for (i = 0; i <= ints[0] && i < 2; i++) js_db9_3[i] = ints[i+1];
}
#endif
#ifdef MODULE
int init_module(void)
#else
int __init js_db9_init(void)
#endif
{
js_db9_port = js_db9_probe(js_db9, js_db9_port);
js_db9_port = js_db9_probe(js_db9_2, js_db9_port);
js_db9_port = js_db9_probe(js_db9_3, js_db9_port);
if (js_db9_port) return 0;
#ifdef MODULE
printk(KERN_WARNING "joy-db9: no joysticks specified\n");
#endif
return -ENODEV;
}
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