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Diffstat (limited to 'sys/arch/i386/isa/joyreg.h')
| -rw-r--r-- | sys/arch/i386/isa/joyreg.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/sys/arch/i386/isa/joyreg.h b/sys/arch/i386/isa/joyreg.h new file mode 100644 index 00000000000..fbd2bf6b003 --- /dev/null +++ b/sys/arch/i386/isa/joyreg.h @@ -0,0 +1,69 @@ +/* $NetBSD: joy.c,v 1.3 1996/05/05 19:46:15 christos Exp $ */ + +/*- + * Copyright (c) 1995 Jean-Marc Zucconi + * All rights reserved. + * + * Ported to NetBSD by Matthieu Herrb <matthieu@laas.fr> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer + * in this position and unchanged. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software withough specific prior written permission + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +/* + * The game port can manage 4 buttons and 4 variable resistors (usually 2 + * joysticks, each with 2 buttons and 2 pots.) via the port at address 0x201. + * Getting the state of the buttons is done by reading the game port; + * buttons 1-4 correspond to bits 4-7 and resistors 1-4 (X1, Y1, X2, Y2) + * to bits 0-3. If button 1 (resp 2, 3, 4) is pressed, the bit 4 (resp 5, + * 6, 7) is set to 0 to get the value of a resistor, write the value 0xff + * at port and wait until the corresponding bit returns to 0. + */ + +/* + * The formulae below only work if u is ``not too large''. See also + * the discussion in microtime.s + */ +#define USEC2TICKS(u) (((u) * 19549) >> 14) +#define TICKS2USEC(u) (((u) * 3433) >> 12) + + +#define JOYPART(d) (minor(d) & 1) +#define JOYUNIT(d) minor(d) >> 1 & 3 + +#ifndef JOY_TIMEOUT +#define JOY_TIMEOUT 2000 /* 2 milliseconds */ +#endif + +#define JOY_NPORTS 1 + +struct joy_softc { + struct device sc_dev; + int port; + int x_off[2], y_off[2]; + int timeout[2]; +}; + +int joyopen __P((dev_t, int, int, struct proc *)); +int joyclose __P((dev_t, int, int, struct proc *)); |