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vsxxx.c revision 1.8 
      1 /* $NetBSD: vsxxx.c,v 1.8 2007/03/04 06:01:45 christos Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1999 Tohru Nishimura.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *      This product includes software developed by Tohru Nishimura.
     17  *	for the NetBSD Project.
     18  * 4. The name of the author may not be used to endorse or promote products
     19  *    derived from this software without specific prior written permission
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 #include <sys/cdefs.h>
     34 __KERNEL_RCSID(0, "$NetBSD: vsxxx.c,v 1.8 2007/03/04 06:01:45 christos Exp $");
     35 
     36 /*
     37  * Common machinary for VSXXX mice and tablet
     38  */
     39 
     40 #include <sys/param.h>
     41 #include <sys/systm.h>
     42 #include <sys/device.h>
     43 
     44 #include <dev/wscons/wsconsio.h>
     45 #include <dev/wscons/wsmousevar.h>
     46 
     47 #include <dev/dec/vsxxxvar.h>
     48 
     49 /*
     50  * XXX XXX XXX
     51  *
     52  * collect various mice and tablet parameters/protocol design
     53  * and establish vsxxx.h
     54  *
     55  * XXX XXX XXX
     56  */
     57 #define	VS_SELFTEST	'T'
     58 #define	VS_INCREMENTAL	'R'
     59 #define	VS_PROMPTING	'D'
     60 #define	VS_REQ_POSITION	'P'
     61 
     62 #define	VS_MOUSE_REPSZ	3
     63 #define	VS_TABLET_REPSZ	5
     64 
     65 /* first octet */
     66 #define	VS_START_FRAME	0x80
     67 #define	VS_R_BUTTON	0x01
     68 #define	VS_M_BUTTON	0x02
     69 #define	VS_L_BUTTON	0x04
     70 #define	VS_Y_SIGN	0x08
     71 #define	VS_X_SIGN	0x10
     72 
     73 /* low order 4 bit of the second octet in a SELFTEST reply */
     74 #define	VS_MOUSE	0x2
     75 #define	VS_TABLET	0x4
     76 
     77 extern struct cfdriver vsms_cd;
     78 
     79 static int  vsxxx_enable(void *);
     80 static int  vsxxx_ioctl(void *, u_long, void *, int, struct proc *);
     81 static void vsxxx_disable(void *);
     82 
     83 struct wsmouse_accessops vsxxx_accessops = {	/* EXPORT */
     84 	vsxxx_enable,				/* MD? */
     85 	vsxxx_ioctl,
     86 	vsxxx_disable,				/* MD? */
     87 };
     88 
     89 static int
     90 vsxxx_enable(v)
     91 	void *v;
     92 {
     93 	/* turn on the hardware? */
     94 	((struct vsxxx_softc *)v)->sc_nbyte = 0;
     95 	return 0;
     96 }
     97 
     98 static void
     99 vsxxx_disable(v)
    100 	void *v;
    101 {
    102 	/* turn off the hardware? */
    103 }
    104 
    105 /*ARGUSED*/
    106 static int
    107 vsxxx_ioctl(v, cmd, data, flag, p)
    108 	void *v;
    109 	u_long cmd;
    110 	void *data;
    111 	int flag;
    112 	struct proc *p;
    113 {
    114 	if (cmd == WSMOUSEIO_GTYPE) {
    115 		*(u_int *)data = WSMOUSE_TYPE_VSXXX;
    116 		return 0;
    117 	}
    118 	return EPASSTHROUGH;
    119 }
    120 
    121 /* EXPORT */ void
    122 vsxxx_input(data)
    123 	int data;
    124 {
    125 	struct vsxxx_softc *sc = (void *)vsms_cd.cd_devs[0];
    126 	int x, y;
    127 
    128 	if (data & VS_START_FRAME)
    129 		sc->sc_nbyte = 0;
    130 
    131 	sc->sc_report.raw[sc->sc_nbyte++] = data;
    132 
    133 	if (sc->sc_nbyte < VS_MOUSE_REPSZ)
    134 		return;
    135 	sc->sc_nbyte = 0;
    136 
    137 	x = sc->sc_report.ms.xpos;
    138 	y = sc->sc_report.ms.ypos;
    139 	if ((sc->sc_report.raw[0] & VS_X_SIGN) == 0)
    140 		x = -x;
    141 	if ((sc->sc_report.raw[0] & VS_Y_SIGN) != 0)
    142 		y = -y;					/* Eeeh? */
    143 	wsmouse_input(sc->sc_wsmousedev,
    144 			sc->sc_report.raw[0] & 07,
    145 			x, y, 0, 0,
    146 			WSMOUSE_INPUT_DELTA);
    147 }
    148