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/*
* joy-turbografx.c Version 1.2
*
* Copyright (c) 1998 Vojtech Pavlik
*/
/*
* This is a module for the Linux joystick driver, supporting
* Steffen Schwenke's <schwenke@burg-halle.de> TurboGraFX parallel port
* interface.
*/
/*
* 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, Ucitelska 1576, Prague 8, 182 00 Czech Republic
*/
#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("Vojtech Pavlik <vojtech@ucw.cz>");
MODULE_PARM(js_tg, "2-8i");
MODULE_PARM(js_tg_2, "2-8i");
MODULE_PARM(js_tg_3, "2-8i");
#define JS_TG_BUTTON1 0x08
#define JS_TG_UP 0x10
#define JS_TG_DOWN 0x20
#define JS_TG_LEFT 0x40
#define JS_TG_RIGHT 0x80
#define JS_TG_BUTTON2 0x02
#define JS_TG_BUTTON3 0x04
#define JS_TG_BUTTON4 0x01
#define JS_TG_BUTTON5 0x08
static struct js_port* js_tg_port = NULL;
static int js_tg[] __initdata = { -1, 0, 0, 0, 0, 0, 0, 0 };
static int js_tg_2[] __initdata = { -1, 0, 0, 0, 0, 0, 0, 0 };
static int js_tg_3[] __initdata = { -1, 0, 0, 0, 0, 0, 0, 0 };
struct js_tg_info {
#ifdef USE_PARPORT
struct pardevice *port; /* parport device */
#else
int port; /* hw port */
#endif
int sticks; /* joysticks connected */
};
/*
* js_tg_read() reads and analyzes tg joystick data.
*/
static int js_tg_read(void *xinfo, int **axes, int **buttons)
{
struct js_tg_info *info = xinfo;
int data1, data2, i;
for (i = 0; i < 7; i++)
if ((info->sticks >> i) & 1) {
JS_PAR_DATA_OUT(~(1 << i), info->port);
data1 = JS_PAR_STATUS(info->port) ^ ~JS_PAR_STATUS_INVERT;
data2 = JS_PAR_CTRL_IN(info->port) ^ JS_PAR_CTRL_INVERT;
axes[i][0] = ((data1 & JS_TG_RIGHT) ? 1 : 0) - ((data1 & JS_TG_LEFT) ? 1 : 0);
axes[i][1] = ((data1 & JS_TG_DOWN ) ? 1 : 0) - ((data1 & JS_TG_UP ) ? 1 : 0);
buttons[i][0] = ((data1 & JS_TG_BUTTON1) ? 0x01 : 0) | ((data2 & JS_TG_BUTTON2) ? 0x02 : 0)
| ((data2 & JS_TG_BUTTON3) ? 0x04 : 0) | ((data2 & JS_TG_BUTTON4) ? 0x08 : 0)
| ((data2 & JS_TG_BUTTON5) ? 0x10 : 0);
}
return 0;
}
/*
* open callback: claim parport.
*/
int js_tg_open(struct js_dev *dev)
{
struct js_tg_info *info = dev->port->info;
if (!MOD_IN_USE) {
#ifdef USE_PARPORT
if (parport_claim(info->port)) return -EBUSY;
#endif
JS_PAR_CTRL_OUT(0x04, info->port);
}
MOD_INC_USE_COUNT;
return 0;
}
/*
* close callback: release parport
*/
int js_tg_close(struct js_dev *dev)
{
struct js_tg_info *info = dev->port->info;
MOD_DEC_USE_COUNT;
if (!MOD_IN_USE) {
JS_PAR_CTRL_OUT(0x00, info->port);
#ifdef USE_PARPORT
parport_release(info->port);
#endif
}
return 0;
}
#ifdef MODULE
void cleanup_module(void)
{
struct js_tg_info *info;
int i;
while (js_tg_port != NULL) {
for (i = 0; i < js_tg_port->ndevs; i++)
if (js_tg_port->devs[i] != NULL)
js_unregister_device(js_tg_port->devs[i]);
info = js_tg_port->info;
#ifdef USE_PARPORT
parport_unregister_device(info->port);
#else
release_region(info->port, 3);
#endif
js_tg_port = js_unregister_port(js_tg_port);
}
}
#endif
/*
* js_tg_init_corr() initializes correction values of
* tg gamepads.
*/
static void __init js_tg_init_corr(int sticks, struct js_corr **corr)
{
int i, j;
for (i = 0; i < 7; i++)
if ((sticks >> i) & 1)
for (j = 0; j < 2; j++) {
corr[i][j].type = JS_CORR_BROKEN;
corr[i][j].prec = 0;
corr[i][j].coef[0] = 0;
corr[i][j].coef[1] = 0;
corr[i][j].coef[2] = (1 << 29);
corr[i][j].coef[3] = (1 << 29);
}
}
/*
* js_tg_probe() probes for tg gamepads.
*/
static struct js_port __init *js_tg_probe(int *config, struct js_port *port)
{
struct js_tg_info iniinfo;
struct js_tg_info *info = &iniinfo;
int i;
if (config[0] < 0) 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-tg: no such parport\n");
return port;
}
info->port = parport_register_device(pp, "joystick (turbografx)", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL);
if (!info->port)
return port;
}
#else
info->port = config[0];
if (check_region(info->port, 3)) return port;
request_region(info->port, 3, "joystick (turbografx)");
#endif
port = js_register_port(port, info, 7, sizeof(struct js_tg_info), js_tg_read);
info = port->info;
info->sticks = 0;
for (i = 0; i < 7; i++)
if (config[i+1] > 0 && config[i+1] < 6) {
#ifdef USE_PARPORT
printk(KERN_INFO "js%d: Multisystem joystick on %s\n",
js_register_device(port, i, 2, config[i+1], "Multisystem joystick", js_tg_open, js_tg_close),
info->port->port->name);
#else
printk(KERN_INFO "js%d: Multisystem joystick at %#x\n",
js_register_device(port, i, 2, config[i+1], "Multisystem joystick", js_tg_open, js_tg_close),
info->port);
#endif
info->sticks |= (1 << i);
}
if (!info->sticks) {
#ifdef USE_PARPORT
parport_unregister_device(info->port);
#else
release_region(info->port, 3);
#endif
return port;
}
js_tg_init_corr(info->sticks, port->corr);
return port;
}
#ifndef MODULE
void __init js_tg_setup(char *str, int *ints)
{
int i;
if (!strcmp(str,"js_tg"))
for (i = 0; i <= ints[0] && i < 2; i++) js_tg[i] = ints[i+1];
if (!strcmp(str,"js_tg_2"))
for (i = 0; i <= ints[0] && i < 2; i++) js_tg_2[i] = ints[i+1];
if (!strcmp(str,"js_tg_3"))
for (i = 0; i <= ints[0] && i < 2; i++) js_tg_3[i] = ints[i+1];
}
#endif
#ifdef MODULE
int init_module(void)
#else
int __init js_tg_init(void)
#endif
{
js_tg_port = js_tg_probe(js_tg, js_tg_port);
js_tg_port = js_tg_probe(js_tg_2, js_tg_port);
js_tg_port = js_tg_probe(js_tg_3, js_tg_port);
if (js_tg_port) return 0;
#ifdef MODULE
printk(KERN_WARNING "joy-tg: no joysticks specified\n");
#endif
return -ENODEV;
}
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