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      1 /* $NetBSD: vsxxx.c,v 1.12 2017/10/28 04:53:54 riastradh 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 1.12 2017/10/28 04:53:54 riastradh 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 #include "ioconf.h"
     49 
     50 /*
     51  * XXX XXX XXX
     52  *
     53  * collect various mice and tablet parameters/protocol design
     54  * and establish vsxxx.h
     55  *
     56  * XXX XXX XXX
     57  */
     58 #define	VS_SELFTEST	'T'
     59 #define	VS_INCREMENTAL	'R'
     60 #define	VS_PROMPTING	'D'
     61 #define	VS_REQ_POSITION	'P'
     62 
     63 #define	VS_MOUSE_REPSZ	3
     64 #define	VS_TABLET_REPSZ	5
     65 
     66 /* first octet */
     67 #define	VS_START_FRAME	0x80
     68 #define	VS_R_BUTTON	0x01
     69 #define	VS_M_BUTTON	0x02
     70 #define	VS_L_BUTTON	0x04
     71 #define	VS_Y_SIGN	0x08
     72 #define	VS_X_SIGN	0x10
     73 
     74 /* low order 4 bit of the second octet in a SELFTEST reply */
     75 #define	VS_MOUSE	0x2
     76 #define	VS_TABLET	0x4
     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 }
    139