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/* $Xorg: lnx_jstk.c,v 1.3 2000/08/17 19:51:23 cpqbld Exp $ */
/* Id: lnx_jstk.c,v 1.1 1995/12/20 14:06:09 lepied Exp */
/*
* Copyright 1995 by Frederic Lepied, France. <fred@sugix.frmug.fr.net>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Frederic Lepied not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Frederic Lepied makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* FREDERIC LEPIED DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL FREDERIC LEPIED BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*
*/
/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/lnx_jstk.c,v 3.6 1996/12/23 06:50:02 dawes Exp $ */
static const char rcs_id[] = "$Xorg: lnx_jstk.c,v 1.1 1995/12/20 14:06:09 lepied Exp";
#include <sys/types.h>
#include <unistd.h>
#include <string.h>
#define inline __inline__
#include <linux/joystick.h>
#include <fcntl.h>
#include <sys/ioctl.h>
extern int errno;
/***********************************************************************
*
* xf86JoystickOn --
*
* open the device and init timeout according to the device value.
*
***********************************************************************
*/
int
xf86JoystickOn(char *name, int *timeout, int *centerX, int *centerY)
{
int fd;
struct JS_DATA_TYPE js;
extern int xf86Verbose;
#ifdef DEBUG
ErrorF("xf86JoystickOn %s\n", name);
#endif
if ((fd = open(name, O_RDWR | O_NDELAY)) < 0)
{
ErrorF("Cannot open joystick '%s' (%s)\n", name,
strerror(errno));
return -1;
}
if (*timeout == 0) {
if (ioctl (fd, JS_GET_TIMELIMIT, timeout) == -1) {
Error("joystick JS_GET_TIMELIMIT ioctl");
}
else {
if (xf86Verbose) {
ErrorF("(--) Joystick: timeout value = %d\n", *timeout);
}
}
}
else {
if (ioctl(fd, JS_SET_TIMELIMIT, timeout) == -1) {
Error("joystick JS_SET_TIMELIMIT ioctl");
}
}
/* Assume the joystick is centred when this is called */
read(fd, &js, JS_RETURN);
if (*centerX < 0) {
*centerX = js.x;
if (xf86Verbose) {
ErrorF("(--) Joystick: CenterX set to %d\n", *centerX);
}
}
if (*centerY < 0) {
*centerY = js.y;
if (xf86Verbose) {
ErrorF("(--) Joystick: CenterY set to %d\n", *centerY);
}
}
return fd;
}
/***********************************************************************
*
* xf86JoystickInit --
*
* called when X device is initialized.
*
***********************************************************************
*/
void
xf86JoystickInit()
{
return;
}
/***********************************************************************
*
* xf86JoystickOff --
*
* close the handle.
*
***********************************************************************
*/
int
xf86JoystickOff(fd, doclose)
int *fd;
int doclose;
{
int oldfd;
if (((oldfd = *fd) >= 0) && doclose) {
close(*fd);
*fd = -1;
}
return oldfd;
}
/***********************************************************************
*
* xf86JoystickGetState --
*
* return the state of buttons and the position of the joystick.
*
***********************************************************************
*/
int
xf86JoystickGetState(fd, x, y, buttons)
int fd;
int *x;
int *y;
int *buttons;
{
struct JS_DATA_TYPE js;
int status;
status = read(fd, &js, JS_RETURN);
if (status != JS_RETURN)
{
Error("Joystick read");
return 0;
}
*x = js.x;
*y = js.y;
*buttons = js.buttons;
return 1;
}
/* end of lnx_jstk.c */
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