/*      $NetBSD: ms.c,v 1.6 2008/05/14 13:29:28 tsutsui Exp $   */

/*-
 * Copyright (c) 2001 Izumi Tsutsui.  All rights reserved.
 *
 * 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 AUTHOR ``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 AUTHOR 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.
 */

/*-
 * Copyright (c) 2000 Tsubai Masanari.  All rights reserved.
 *
 * 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. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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: ms.c,v 1.6 2008/05/14 13:29:28 tsutsui Exp $");

#include <sys/param.h>
#include <sys/device.h>
#include <sys/systm.h>

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

#include <machine/cpu.h>
#include <machine/bus.h>

#include <news68k/dev/msvar.h>

void
ms_intr(struct ms_softc *sc)
{
        bus_space_tag_t bt = sc->sc_bt;
        bus_space_handle_t bh = sc->sc_bh;
        bus_size_t offset = sc->sc_offset;
        int code, index, byte0, byte1, byte2;
        int button, dx, dy;

        if (sc->sc_wsmousedev == NULL)
                return;

        code = bus_space_read_1(bt, bh, offset);
        index = sc->sc_ndata;

        if (code & MS_S_MARK) {
                sc->sc_buf[MS_S_BYTE] = code;
                sc->sc_ndata = MS_X_BYTE;
                return;
        }

        if (index == MS_X_BYTE) {
                sc->sc_buf[MS_X_BYTE] = code;
                sc->sc_ndata = MS_Y_BYTE;
                return;
        }

        if (index == MS_Y_BYTE) {
                sc->sc_buf[MS_Y_BYTE] = code;
                sc->sc_ndata = 0;

                byte0 = sc->sc_buf[MS_S_BYTE];
                byte1 = sc->sc_buf[MS_X_BYTE];
                byte2 = sc->sc_buf[MS_Y_BYTE];

                button = 0;
                if (byte0 & MS_S_SW1)
                        button |= 0x01;
                if (byte0 & MS_S_SW3)
                        button |= 0x02;
                if (byte0 & MS_S_SW2)
                        button |= 0x04;

                dx = byte1 & MS_X_DATA;
                if (byte0 & MS_S_XSIGN)
                        dx = -dx;
                dy = byte2 & MS_Y_DATA;
                if (byte0 & MS_S_YSIGN)
                        dy = -dy;

                wsmouse_input(sc->sc_wsmousedev,
                                button,
                                dx, -dy, 0, 0,
                                WSMOUSE_INPUT_DELTA);
        }
}