1 /* $OpenBSD: joyreg.h,v 1.5 2007/11/29 10:53:54 deraadt Exp $ */ 2 /* $NetBSD: joy.c,v 1.3 1996/05/05 19:46:15 christos Exp $ */ 3 4 /*- 5 * Copyright (c) 1995 Jean-Marc Zucconi 6 * All rights reserved. 7 * 8 * Ported to NetBSD by Matthieu Herrb <matthieu@laas.fr> 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer 15 * in this position and unchanged. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 * 33 */ 34 35 /* 36 * The game port can manage 4 buttons and 4 variable resistors (usually 2 37 * joysticks, each with 2 buttons and 2 pots.) via the port at address 0x201. 38 * Getting the state of the buttons is done by reading the game port; 39 * buttons 1-4 correspond to bits 4-7 and resistors 1-4 (X1, Y1, X2, Y2) 40 * to bits 0-3. If button 1 (resp 2, 3, 4) is pressed, the bit 4 (resp 5, 41 * 6, 7) is set to 0 to get the value of a resistor, write the value 0xff 42 * at port and wait until the corresponding bit returns to 0. 43 */ 44 45 /* 46 * The formulae below only work if u is ``not too large''. 47 */ 48 #define USEC2TICKS(u) (((u) * 19549) >> 14) 49 #define TICKS2USEC(u) (((u) * 3433) >> 12) 50 51 52 #define JOYPART(d) (minor(d) & 1) 53 #define JOYUNIT(d) minor(d) >> 1 & 3 54 55 #ifndef JOY_TIMEOUT 56 #define JOY_TIMEOUT 2000 /* 2 milliseconds */ 57 #endif 58 59 #define JOY_NPORTS 1 60 61 struct joy_softc { 62 struct device sc_dev; 63 int port; 64 int x_off[2], y_off[2]; 65 int timeout[2]; 66 }; 67 68 int joyopen(dev_t, int, int, struct proc *); 69 int joyclose(dev_t, int, int, struct proc *); 70