Home | History | Annotate | Line # | Download | only in wscons
tpcalib.c revision 1.1 
      1 /*	$NetBSD: tpcalib.c,v 1.1 2004/05/28 17:52:06 tsarna Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1999-2003 TAKEMURA Shin All rights reserved.
      5  * Copyright (c) 1999 PocketBSD Project. All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  *
     28  */
     29 
     30 #include <sys/cdefs.h>
     31 __KERNEL_RCSID(0, "$NetBSD: tpcalib.c,v 1.1 2004/05/28 17:52:06 tsarna Exp $");
     32 
     33 #include <sys/param.h>
     34 #include <sys/systm.h>
     35 #include <sys/device.h>
     36 #include <sys/kernel.h>
     37 #include <dev/wscons/wsconsio.h>
     38 #include <dev/wscons/tpcalibvar.h>
     39 
     40 #include <machine/platid.h>
     41 #include <machine/platid_mask.h>
     42 
     43 #define TPCALIBDEBUG
     44 #ifdef TPCALIBDEBUG
     45 int	tpcalib_debug = 0;
     46 #define	DPRINTF(arg) if (tpcalib_debug) printf arg;
     47 #else
     48 #define	DPRINTF(arg)
     49 #endif
     50 
     51 /* mra is defined in mra.c */
     52 extern int mra_Y_AX1_BX2_C(int *, int, int *, int, int *, int, int, int, int *,
     53     int *, int *);
     54 
     55 #define SCALE	(1024*256)
     56 
     57 int
     58 tpcalib_init(struct tpcalib_softc *sc)
     59 {
     60 	tpcalib_reset(sc);
     61 	return (0);
     62 }
     63 
     64 void
     65 tpcalib_reset(struct tpcalib_softc *sc)
     66 {
     67 	/* This indicate 'raw mode'. No translation will be done. */
     68 	sc->sc_saved.samplelen = WSMOUSE_CALIBCOORDS_RESET;
     69 }
     70 
     71 void
     72 tpcalib_trans(struct tpcalib_softc *sc, int rawx, int rawy, int *x, int *y)
     73 {
     74 	if (sc->sc_saved.samplelen == WSMOUSE_CALIBCOORDS_RESET) {
     75 		/* This indicate 'raw mode'. No translation will be done. */
     76 		*x = rawx;
     77 		*y = rawy;
     78 	} else {
     79 		*x = (sc->sc_ax * rawx + sc->sc_bx * rawy) / SCALE + sc->sc_cx;
     80 		*y = (sc->sc_ay * rawx + sc->sc_by * rawy) / SCALE + sc->sc_cy;
     81 		if (*x < sc->sc_minx) *x = sc->sc_minx;
     82 		if (*y < sc->sc_miny) *y = sc->sc_miny;
     83 		if (sc->sc_maxx < *x)
     84 			*x = sc->sc_maxx;
     85 		if (sc->sc_maxy < *y)
     86 			*y = sc->sc_maxy;
     87 	}
     88 }
     89 
     90 int
     91 tpcalib_ioctl(struct tpcalib_softc *sc, u_long cmd, caddr_t data, int flag,
     92     struct proc *p)
     93 {
     94 	struct wsmouse_calibcoords *d;
     95 	struct wsmouse_id *id;
     96 	char *idstr;
     97 	int s;
     98 
     99 	switch (cmd) {
    100 	case WSMOUSEIO_SCALIBCOORDS:
    101 		s = sizeof(struct wsmouse_calibcoord);
    102 		d = (struct wsmouse_calibcoords *)data;
    103 		if (d->samplelen == WSMOUSE_CALIBCOORDS_RESET) {
    104 			tpcalib_reset(sc);
    105 		} else
    106 			if (mra_Y_AX1_BX2_C(&d->samples[0].x, s,
    107 			    &d->samples[0].rawx, s,
    108 			    &d->samples[0].rawy, s,
    109 			    d->samplelen, SCALE,
    110 			    &sc->sc_ax, &sc->sc_bx, &sc->sc_cx) ||
    111 			    mra_Y_AX1_BX2_C(&d->samples[0].y, s,
    112 				&d->samples[0].rawx, s,
    113 				&d->samples[0].rawy, s,
    114 				d->samplelen, SCALE,
    115 				&sc->sc_ay, &sc->sc_by, &sc->sc_cy)) {
    116 				printf("tpcalib: MRA error");
    117 				tpcalib_reset(sc);
    118 
    119 				return (EINVAL);
    120 			} else {
    121 				sc->sc_minx = d->minx;
    122 				sc->sc_maxx = d->maxx;
    123 				sc->sc_miny = d->miny;
    124 				sc->sc_maxy = d->maxy;
    125 				sc->sc_saved = *d;
    126 				DPRINTF(("tpcalib: x=%d~%d y=%d~%d\n",
    127 				    sc->sc_minx, sc->sc_maxx,
    128 				    sc->sc_miny, sc->sc_maxy));
    129 				DPRINTF(("tpcalib: Ax=%d Bx=%d Cx=%d\n",
    130 				    sc->sc_ax, sc->sc_bx, sc->sc_cx));
    131 				DPRINTF(("tpcalib: Ay=%d By=%d Cy=%d\n",
    132 				    sc->sc_ay, sc->sc_by, sc->sc_cy));
    133 			}
    134 		break;
    135 
    136 	case WSMOUSEIO_GCALIBCOORDS:
    137 		d = (struct wsmouse_calibcoords *)data;
    138 		*d = sc->sc_saved;
    139 		break;
    140 
    141 	case WSMOUSEIO_GETID:
    142 		/*
    143 		 * return unique ID string,
    144 		 * "<vendor> <model> <serial number>"
    145 		 */
    146 		id = (struct wsmouse_id *)data;
    147 		if (id->type != WSMOUSE_ID_TYPE_UIDSTR)
    148 			return (EINVAL);
    149 		idstr = platid_name(&platid);
    150 		s = strlen(idstr);
    151 		if (WSMOUSE_ID_MAXLEN - 10 < s)
    152 			s = WSMOUSE_ID_MAXLEN - 10;
    153 		memcpy(id->data, idstr, s);
    154 		strcpy(&id->data[s], " SN000000");
    155 		id->length = s + 9;
    156 		break;
    157 
    158 	default:
    159 		return (EPASSTHROUGH);
    160 	}
    161 	return (0);
    162 }
    163