* Copyright (c) 1992, 1993

/* $NetBSD: dzms.c,v 1.25 2024/02/02 15:44:43 tsutsui Exp $ */

/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratory.
*
* 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.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
* @(#)ms.c 8.1 (Berkeley) 6/11/93
*/

/*
* VSXXX mice attached to line 1 of the DZ*
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: dzms.c,v 1.25 2024/02/02 15:44:43 tsutsui Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <sys/syslog.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/tty.h>

#include <sys/bus.h>

#include <dev/dec/dzreg.h>
#include <dev/dec/dzvar.h>
#include <dev/dec/dzkbdvar.h>
#include <dev/dec/lk201.h>

#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wsmousevar.h>

#include "locators.h"

struct dzms_softc { /* driver status information */
struct dz_linestate *dzms_ls;

int sc_enabled; /* input enabled? */
int sc_selftest;

int inputstate;
u_int buttons;
int dx, dy;

device_t sc_wsmousedev;
};

static int dzms_match(device_t, cfdata_t, void *);
static void dzms_attach(device_t, device_t, void *);
static int dzms_input(void *, int);

CFATTACH_DECL_NEW(dzms, sizeof(struct dzms_softc),
dzms_match, dzms_attach, NULL, NULL);

static int dzms_enable(void *);
static int dzms_ioctl(void *, u_long, void *, int, struct lwp *);
static void dzms_disable(void *);

const struct wsmouse_accessops dzms_accessops = {
dzms_enable,
dzms_ioctl,
dzms_disable,
};

static int
dzms_match(device_t parent, cfdata_t cf, void *aux)
{
struct dzkm_attach_args *daa = aux;

/* Exact match is better than wildcard. */
if (cf->cf_loc[DZCF_LINE] == daa->daa_line)
return 2;

/* This driver accepts wildcard. */
if (cf->cf_loc[DZCF_LINE] == DZCF_LINE_DEFAULT)
return 1;

return 0;
}

static void
dzms_attach(device_t parent, device_t self, void *aux)
{
struct dz_softc *dz = device_private(parent);
struct dzms_softc *dzms = device_private(self);
struct dzkm_attach_args *daa = aux;
struct dz_linestate *ls;
struct wsmousedev_attach_args a;

dz->sc_dz[daa->daa_line].dz_catch = dzms_input;
dz->sc_dz[daa->daa_line].dz_private = dzms;
ls = &dz->sc_dz[daa->daa_line];
dzms->dzms_ls = ls;

aprint_normal("\n");

a.accessops = &dzms_accessops;
a.accesscookie = dzms;

dzms->sc_enabled = 0;
dzms->sc_selftest = 0;
dzms->sc_wsmousedev = config_found(self, &a, wsmousedevprint,
CFARGS_NONE);
}

static int
dzms_enable(void *v)
{
struct dzms_softc *sc = v;

if (sc->sc_enabled)
return EBUSY;

sc->sc_selftest = 4; /* wait for 4 byte reply upto 1/2 sec */
dzputc(sc->dzms_ls, MOUSE_SELF_TEST);
(void)tsleep(dzms_enable, TTIPRI, "dzmsopen", hz / 2);
if (sc->sc_selftest != 0) {
sc->sc_selftest = 0;
return ENXIO;
}
DELAY(150);
dzputc(sc->dzms_ls, MOUSE_INCREMENTAL);
sc->sc_enabled = 1;
sc->inputstate = 0;
return 0;
}

static void
dzms_disable(void *v)
{
struct dzms_softc *sc = v;

sc->sc_enabled = 0;
}

static int
dzms_ioctl(void *v, u_long cmd, void *data, int flag, struct lwp *l)
{
if (cmd == WSMOUSEIO_GTYPE) {
*(u_int *)data = WSMOUSE_TYPE_VSXXX;
return 0;
}
return EPASSTHROUGH;
}

static int
dzms_input(void *vsc, int data)
{
struct dzms_softc *sc = vsc;

if (sc->sc_enabled == 0) {
if (sc->sc_selftest > 0) {
sc->sc_selftest -= 1;
if (sc->sc_selftest == 0)
wakeup(dzms_enable);
}
return (1);
}

#define WSMS_BUTTON1 0x01
#define WSMS_BUTTON2 0x02
#define WSMS_BUTTON3 0x04

if ((data & MOUSE_START_FRAME) != 0)
sc->inputstate = 1;
else
sc->inputstate++;

if (sc->inputstate == 1) {
sc->buttons = 0;
if ((data & LEFT_BUTTON) != 0)
sc->buttons |= WSMS_BUTTON1;
if ((data & MIDDLE_BUTTON) != 0)
sc->buttons |= WSMS_BUTTON2;
if ((data & RIGHT_BUTTON) != 0)
sc->buttons |= WSMS_BUTTON3;

sc->dx = data & MOUSE_X_SIGN;
sc->dy = data & MOUSE_Y_SIGN;
} else if (sc->inputstate == 2) {
if (sc->dx == 0)
sc->dx = -data;
else
sc->dx = data;
} else if (sc->inputstate == 3) {
sc->inputstate = 0;
if (sc->dy == 0)
sc->dy = -data;
else
sc->dy = data;
wsmouse_input(sc->sc_wsmousedev,
sc->buttons,
sc->dx, sc->dy, 0, 0,
WSMOUSE_INPUT_DELTA);
}

return(1);
}