141 lines
4.2 KiB
C
141 lines
4.2 KiB
C
/* $NetBSD: tpcalib.c,v 1.6 2005/12/11 12:24:12 christos Exp $ */
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/*
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* Copyright (c) 1999-2003 TAKEMURA Shin 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/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: tpcalib.c,v 1.6 2005/12/11 12:24:12 christos Exp $");
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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 <dev/wscons/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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extern int mra_Y_AX1_BX2_C(const int *, int,
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const int *, int, const int *, int, int, int,
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int *, int *, int *);
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#define SCALE (1024*256)
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int
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tpcalib_init(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(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(struct tpcalib_softc *sc, int rawx, int rawy, int *x, int *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(struct tpcalib_softc *sc, u_long cmd, caddr_t data, int flag,
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struct lwp *l)
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{
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const struct wsmouse_calibcoords *d;
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int s;
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switch (cmd) {
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case WSMOUSEIO_SCALIBCOORDS:
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s = sizeof(struct wsmouse_calibcoord);
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d = (const struct wsmouse_calibcoords *)data;
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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 (EINVAL);
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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: x=%d~%d y=%d~%d\n",
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sc->sc_minx, sc->sc_maxx,
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sc->sc_miny, sc->sc_maxy));
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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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*(struct wsmouse_calibcoords *)data = sc->sc_saved;
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break;
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default:
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return (EPASSTHROUGH);
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}
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return (0);
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}
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