143 lines
4.0 KiB
C
143 lines
4.0 KiB
C
/* $NetBSD: tpcalib.c,v 1.3 2000/02/28 12:34:32 takemura Exp $ */
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/*
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* Copyright (c) 1999 Shin Takemura All rights reserved.
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* Copyright (c) 1999 PocketBSD Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/kernel.h>
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#include <dev/wscons/wsconsio.h>
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#include <hpcmips/dev/tpcalibvar.h>
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#define TPCALIBDEBUG
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#ifdef TPCALIBDEBUG
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int tpcalib_debug = 0;
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#define DPRINTF(arg) if (tpcalib_debug) printf arg;
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#else
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#define DPRINTF(arg)
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#endif
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/* mra is defined in mra.c */
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int mra_Y_AX1_BX2_C __P((int *y, int ys, int *x1, int x1s, int *x2, int x2s,
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int n, int scale, int *a, int *b, int *c));
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#define SCALE (1024*1024)
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int
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tpcalib_init(sc)
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struct tpcalib_softc *sc;
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{
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tpcalib_reset(sc);
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return (0);
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}
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void
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tpcalib_reset(sc)
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struct tpcalib_softc *sc;
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{
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/* This indicate 'raw mode'. No translation will be done. */
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sc->sc_saved.samplelen = WSMOUSE_CALIBCOORDS_RESET;
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}
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void
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tpcalib_trans(sc, rawx, rawy, x, y)
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struct tpcalib_softc *sc;
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int rawx, rawy;
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int *x, *y;
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{
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if (sc->sc_saved.samplelen == WSMOUSE_CALIBCOORDS_RESET) {
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/* This indicate 'raw mode'. No translation will be done. */
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*x = rawx;
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*y = rawy;
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} else {
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*x = (sc->sc_ax * rawx + sc->sc_bx * rawy) / SCALE + sc->sc_cx;
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*y = (sc->sc_ay * rawx + sc->sc_by * rawy) / SCALE + sc->sc_cy;
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if (*x < sc->sc_minx) *x = sc->sc_minx;
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if (*y < sc->sc_miny) *y = sc->sc_miny;
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if (sc->sc_maxx < *x)
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*x = sc->sc_maxx;
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if (sc->sc_maxy < *y)
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*y = sc->sc_maxy;
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}
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}
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int
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tpcalib_ioctl(sc, cmd, data, flag, p)
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struct tpcalib_softc *sc;
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u_long cmd;
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caddr_t data;
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int flag;
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struct proc *p;
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{
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struct wsmouse_calibcoords *d;
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int s = sizeof(struct wsmouse_calibcoord);
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d = (struct wsmouse_calibcoords *)data;
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switch (cmd) {
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case WSMOUSEIO_SCALIBCOORDS:
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if (d->samplelen == WSMOUSE_CALIBCOORDS_RESET) {
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tpcalib_reset(sc);
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} else
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if (mra_Y_AX1_BX2_C(&d->samples[0].x, s,
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&d->samples[0].rawx, s,
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&d->samples[0].rawy, s,
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d->samplelen, SCALE,
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&sc->sc_ax, &sc->sc_bx, &sc->sc_cx) ||
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mra_Y_AX1_BX2_C(&d->samples[0].y, s,
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&d->samples[0].rawx, s,
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&d->samples[0].rawy, s,
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d->samplelen, SCALE,
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&sc->sc_ay, &sc->sc_by, &sc->sc_cy)) {
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printf("tpcalib: MRA error");
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tpcalib_reset(sc);
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return (-1);
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} else {
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sc->sc_minx = d->minx;
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sc->sc_maxx = d->maxx;
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sc->sc_miny = d->miny;
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sc->sc_maxy = d->maxy;
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sc->sc_saved = *d;
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DPRINTF(("tpcalib: Ax=%d Bx=%d Cx=%d\n",
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sc->sc_ax, sc->sc_bx, sc->sc_cx));
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DPRINTF(("tpcalib: Ay=%d By=%d Cy=%d\n",
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sc->sc_ay, sc->sc_by, sc->sc_cy));
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}
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break;
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case WSMOUSEIO_GCALIBCOORDS:
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*d = sc->sc_saved;
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break;
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default:
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return (-1);
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}
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return (0);
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}
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