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

     /* $NetBSD: vsxxx.c,v 1.12 2017/10/28 04:53:54 riastradh Exp $ */
     
     /*-
      * Copyright (c) 1999 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Tohru Nishimura.
      *
     * 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.
     * 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.
     *
     * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     * ``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 FOUNDATION OR CONTRIBUTORS
     * 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.
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: vsxxx.c,v 1.12 2017/10/28 04:53:54 riastradh Exp $");
    
    /*
     * Common machinary for VSXXX mice and tablet
     */
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/device.h>
    
    #include <dev/wscons/wsconsio.h>
    #include <dev/wscons/wsmousevar.h>
    
    #include <dev/dec/vsxxxvar.h>
    
    #include "ioconf.h"
    
    /*
     * XXX XXX XXX
     *
     * collect various mice and tablet parameters/protocol design
     * and establish vsxxx.h
     *
     * XXX XXX XXX
     */
    #define VS_SELFTEST     'T'
    #define VS_INCREMENTAL  'R'
    #define VS_PROMPTING    'D'
    #define VS_REQ_POSITION 'P'
    
    #define VS_MOUSE_REPSZ  3
    #define VS_TABLET_REPSZ 5
    
    /* first octet */
    #define VS_START_FRAME  0x80
    #define VS_R_BUTTON     0x01
    #define VS_M_BUTTON     0x02
    #define VS_L_BUTTON     0x04
    #define VS_Y_SIGN       0x08
    #define VS_X_SIGN       0x10
    
    /* low order 4 bit of the second octet in a SELFTEST reply */
    #define VS_MOUSE        0x2
    #define VS_TABLET       0x4
    
    static int  vsxxx_enable(void *);
    static int  vsxxx_ioctl(void *, u_long, void *, int, struct proc *);
    static void vsxxx_disable(void *);
    
    struct wsmouse_accessops vsxxx_accessops = {    /* EXPORT */
            vsxxx_enable,                           /* MD? */
            vsxxx_ioctl,
            vsxxx_disable,                          /* MD? */
    };
    
    static int
    vsxxx_enable(void *v)
    {
            /* turn on the hardware? */
            ((struct vsxxx_softc *)v)->sc_nbyte = 0;
            return 0;
    }
    
    static void
    vsxxx_disable(void *v)
    {
            /* turn off the hardware? */
   }
   
   /*ARGUSED*/
   static int
   vsxxx_ioctl(void *v, u_long cmd, void *data, int flag, struct proc *p)
   {
           if (cmd == WSMOUSEIO_GTYPE) {
                   *(u_int *)data = WSMOUSE_TYPE_VSXXX;
                   return 0;
           }
           return EPASSTHROUGH;
   }
   
   /* EXPORT */ void
   vsxxx_input(int data)
   {
           struct vsxxx_softc *sc = device_lookup_private(&vsms_cd, 0);
           int x, y;
   
           if (data & VS_START_FRAME)
                   sc->sc_nbyte = 0;
   
           sc->sc_report.raw[sc->sc_nbyte++] = data;
   
           if (sc->sc_nbyte < VS_MOUSE_REPSZ)
                   return;
           sc->sc_nbyte = 0;
   
           x = sc->sc_report.ms.xpos;
           y = sc->sc_report.ms.ypos;
           if ((sc->sc_report.raw[0] & VS_X_SIGN) == 0)
                   x = -x;
           if ((sc->sc_report.raw[0] & VS_Y_SIGN) != 0)
                   y = -y;                                 /* Eeeh? */
           wsmouse_input(sc->sc_wsmousedev,
                           sc->sc_report.raw[0] & 07,
                           x, y, 0, 0,
                           WSMOUSE_INPUT_DELTA);
   }

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