sys/dev/dec/vsxxx.c

   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(void *v)
  90 {
  91         /* turn on the hardware? */
  92         ((struct vsxxx_softc *)v)->sc_nbyte = 0;
  93         return 0;
  94 }
  95
  96 static void
  97 vsxxx_disable(void *v)
  98 {
  99         /* turn off the hardware? */
 100 }
 101
 102 /*ARGUSED*/
 103 static int
 104 vsxxx_ioctl(void *v, u_long cmd, void *data, int flag, struct proc *p)
 105 {
 106         if (cmd == WSMOUSEIO_GTYPE) {
 107                 *(u_int *)data = WSMOUSE_TYPE_VSXXX;
 108                 return 0;
 109         }
 110         return EPASSTHROUGH;
 111 }
 112
 113 /* EXPORT */ void
 114 vsxxx_input(int data)
 115 {
 116         struct vsxxx_softc *sc = device_lookup_private(&vsms_cd, 0);
 117         int x, y;
 118
 119         if (data & VS_START_FRAME)
 120                 sc->sc_nbyte = 0;
 121
 122         sc->sc_report.raw[sc->sc_nbyte++] = data;
 123
 124         if (sc->sc_nbyte < VS_MOUSE_REPSZ)
 125                 return;
 126         sc->sc_nbyte = 0;
 127
 128         x = sc->sc_report.ms.xpos;
 129         y = sc->sc_report.ms.ypos;
 130         if ((sc->sc_report.raw[0] & VS_X_SIGN) == 0)
 131                 x = -x;
 132         if ((sc->sc_report.raw[0] & VS_Y_SIGN) != 0)
 133                 y = -y;                                 /* Eeeh? */
 134         wsmouse_input(sc->sc_wsmousedev,
 135                         sc->sc_report.raw[0] & 07,
 136                         x, y, 0, 0,
 137                         WSMOUSE_INPUT_DELTA);
 138 }