vsxxx.c

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    1 /* $NetBSD: vsxxx.c,v 1.10 2008/06/12 21:51:12 cegger Exp $ */
    2 
    3 /*-
    4  * Copyright (c) 1999 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Tohru Nishimura.
    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  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   29  * POSSIBILITY OF SUCH DAMAGE.
   30  */
   31 
   32 #include <sys/cdefs.h>
   33 __KERNEL_RCSID(0, "$NetBSD: vsxxx.c,v 1.10 2008/06/12 21:51:12 cegger Exp $");
   34 
   35 /*
   36  * Common machinary for VSXXX mice and tablet
   37  */
   38 
   39 #include <sys/param.h>
   40 #include <sys/systm.h>
   41 #include <sys/device.h>
   42 
   43 #include <dev/wscons/wsconsio.h>
   44 #include <dev/wscons/wsmousevar.h>
   45 
   46 #include <dev/dec/vsxxxvar.h>
   47 
   48 /*
   49  * XXX XXX XXX
   50  *
   51  * collect various mice and tablet parameters/protocol design
   52  * and establish vsxxx.h
   53  *
   54  * XXX XXX XXX
   55  */
   56 #define VS_SELFTEST     'T'
   57 #define VS_INCREMENTAL  'R'
   58 #define VS_PROMPTING    'D'
   59 #define VS_REQ_POSITION 'P'
   60 
   61 #define VS_MOUSE_REPSZ  3
   62 #define VS_TABLET_REPSZ 5
   63 
   64 /* first octet */
   65 #define VS_START_FRAME  0x80
   66 #define VS_R_BUTTON     0x01
   67 #define VS_M_BUTTON     0x02
   68 #define VS_L_BUTTON     0x04
   69 #define VS_Y_SIGN       0x08
   70 #define VS_X_SIGN       0x10
   71 
   72 /* low order 4 bit of the second octet in a SELFTEST reply */
   73 #define VS_MOUSE        0x2
   74 #define VS_TABLET       0x4
   75 
   76 extern struct cfdriver vsms_cd;
   77 
   78 static int  vsxxx_enable(void *);
   79 static int  vsxxx_ioctl(void *, u_long, void *, int, struct proc *);
   80 static void vsxxx_disable(void *);
   81 
   82 struct wsmouse_accessops vsxxx_accessops = {    /* EXPORT */
   83         vsxxx_enable,                           /* MD? */
   84         vsxxx_ioctl,
   85         vsxxx_disable,                          /* MD? */
   86 };
   87 
   88 static int
   89 vsxxx_enable(v)
   90         void *v;
   91 {
   92         /* turn on the hardware? */
   93         ((struct vsxxx_softc *)v)->sc_nbyte = 0;
   94         return 0;
   95 }
   96 
   97 static void
   98 vsxxx_disable(v)
   99         void *v;
  100 {
  101         /* turn off the hardware? */
  102 }
  103 
  104 /*ARGUSED*/
  105 static int
  106 vsxxx_ioctl(v, cmd, data, flag, p)
  107         void *v;
  108         u_long cmd;
  109         void *data;
  110         int flag;
  111         struct proc *p;
  112 {
  113         if (cmd == WSMOUSEIO_GTYPE) {
  114                 *(u_int *)data = WSMOUSE_TYPE_VSXXX;
  115                 return 0;
  116         }
  117         return EPASSTHROUGH;
  118 }
  119 
  120 /* EXPORT */ void
  121 vsxxx_input(int data)
  122 {
  123         struct vsxxx_softc *sc = device_lookup_private(&vsms_cd, 0);
  124         int x, y;
  125 
  126         if (data & VS_START_FRAME)
  127                 sc->sc_nbyte = 0;
  128 
  129         sc->sc_report.raw[sc->sc_nbyte++] = data;
  130 
  131         if (sc->sc_nbyte < VS_MOUSE_REPSZ)
  132                 return;
  133         sc->sc_nbyte = 0;
  134 
  135         x = sc->sc_report.ms.xpos;
  136         y = sc->sc_report.ms.ypos;
  137         if ((sc->sc_report.raw[0] & VS_X_SIGN) == 0)
  138                 x = -x;
  139         if ((sc->sc_report.raw[0] & VS_Y_SIGN) != 0)
  140                 y = -y;                                 /* Eeeh? */
  141         wsmouse_input(sc->sc_wsmousedev,
  142                         sc->sc_report.raw[0] & 07,
  143                         x, y, 0, 0,
  144                         WSMOUSE_INPUT_DELTA);
  145 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/dec/vsxxx.c

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sys/dev/dec/vsxxx.c