diff options
Diffstat (limited to 'hw/xfree86/os-support/linux/lnx_jstk.c')
| -rw-r--r-- | hw/xfree86/os-support/linux/lnx_jstk.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/hw/xfree86/os-support/linux/lnx_jstk.c b/hw/xfree86/os-support/linux/lnx_jstk.c new file mode 100644 index 000000000..ea308c159 --- /dev/null +++ b/hw/xfree86/os-support/linux/lnx_jstk.c @@ -0,0 +1,173 @@ +/* $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 */ |