xref: /netbsd-src/sys/dev/wscons/tpcalib.c (revision e77d389b550013cae5befd054ca72ab5418d5ebb)
1*e77d389bSryoon /*	$NetBSD: tpcalib.c,v 1.13 2019/07/09 12:55:45 ryoon Exp $	*/
2f53a32e6Stsarna 
3f53a32e6Stsarna /*
4f53a32e6Stsarna  * Copyright (c) 1999-2003 TAKEMURA Shin All rights reserved.
5f53a32e6Stsarna  * Copyright (c) 1999 PocketBSD Project. All rights reserved.
6f53a32e6Stsarna  *
7f53a32e6Stsarna  * Redistribution and use in source and binary forms, with or without
8f53a32e6Stsarna  * modification, are permitted provided that the following conditions
9f53a32e6Stsarna  * are met:
10f53a32e6Stsarna  * 1. Redistributions of source code must retain the above copyright
11f53a32e6Stsarna  *    notice, this list of conditions and the following disclaimer.
12f53a32e6Stsarna  * 2. Redistributions in binary form must reproduce the above copyright
13f53a32e6Stsarna  *    notice, this list of conditions and the following disclaimer in the
14f53a32e6Stsarna  *    documentation and/or other materials provided with the distribution.
15f53a32e6Stsarna  *
1656a1ab04Speter  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17f53a32e6Stsarna  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18f53a32e6Stsarna  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1956a1ab04Speter  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20f53a32e6Stsarna  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21f53a32e6Stsarna  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22f53a32e6Stsarna  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23f53a32e6Stsarna  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24f53a32e6Stsarna  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25f53a32e6Stsarna  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26f53a32e6Stsarna  * SUCH DAMAGE.
27f53a32e6Stsarna  *
28f53a32e6Stsarna  */
29f53a32e6Stsarna 
30f53a32e6Stsarna #include <sys/cdefs.h>
31*e77d389bSryoon __KERNEL_RCSID(0, "$NetBSD: tpcalib.c,v 1.13 2019/07/09 12:55:45 ryoon Exp $");
329eddf385Speter 
339eddf385Speter #ifdef _KERNEL_OPT
349eddf385Speter #include "opt_tpcalib.h"
359eddf385Speter #endif
36f53a32e6Stsarna 
37f53a32e6Stsarna #include <sys/param.h>
38f53a32e6Stsarna #include <sys/systm.h>
39f53a32e6Stsarna #include <sys/device.h>
40f53a32e6Stsarna #include <sys/kernel.h>
41f53a32e6Stsarna #include <dev/wscons/wsconsio.h>
42f53a32e6Stsarna #include <dev/wscons/tpcalibvar.h>
43f53a32e6Stsarna 
44f53a32e6Stsarna #ifdef TPCALIBDEBUG
45f53a32e6Stsarna int	tpcalib_debug = 0;
46f53a32e6Stsarna #define	DPRINTF(arg) if (tpcalib_debug) printf arg;
47f53a32e6Stsarna #else
48f53a32e6Stsarna #define	DPRINTF(arg)
49f53a32e6Stsarna #endif
50f53a32e6Stsarna 
51f53a32e6Stsarna /* mra is defined in mra.c */
525442d49eSuwe extern int mra_Y_AX1_BX2_C(const int *, int,
535442d49eSuwe 			   const int *, int, const int *, int, int, int,
545442d49eSuwe 			   int *, int *, int *);
55f53a32e6Stsarna 
56*e77d389bSryoon #define SCALE	(1024)
57f53a32e6Stsarna 
58f53a32e6Stsarna int
tpcalib_init(struct tpcalib_softc * sc)59f53a32e6Stsarna tpcalib_init(struct tpcalib_softc *sc)
60f53a32e6Stsarna {
61f53a32e6Stsarna 	tpcalib_reset(sc);
62f53a32e6Stsarna 	return (0);
63f53a32e6Stsarna }
64f53a32e6Stsarna 
65f53a32e6Stsarna void
tpcalib_reset(struct tpcalib_softc * sc)66f53a32e6Stsarna tpcalib_reset(struct tpcalib_softc *sc)
67f53a32e6Stsarna {
68f53a32e6Stsarna 	/* This indicate 'raw mode'. No translation will be done. */
69f53a32e6Stsarna 	sc->sc_saved.samplelen = WSMOUSE_CALIBCOORDS_RESET;
70f53a32e6Stsarna }
71f53a32e6Stsarna 
72f53a32e6Stsarna void
tpcalib_trans(struct tpcalib_softc * sc,int rawx,int rawy,int * x,int * y)73f53a32e6Stsarna tpcalib_trans(struct tpcalib_softc *sc, int rawx, int rawy, int *x, int *y)
74f53a32e6Stsarna {
75f53a32e6Stsarna 	if (sc->sc_saved.samplelen == WSMOUSE_CALIBCOORDS_RESET) {
76f53a32e6Stsarna 		/* This indicate 'raw mode'. No translation will be done. */
77f53a32e6Stsarna 		*x = rawx;
78f53a32e6Stsarna 		*y = rawy;
79f53a32e6Stsarna 	} else {
80f53a32e6Stsarna 		*x = (sc->sc_ax * rawx + sc->sc_bx * rawy) / SCALE + sc->sc_cx;
81f53a32e6Stsarna 		*y = (sc->sc_ay * rawx + sc->sc_by * rawy) / SCALE + sc->sc_cy;
82f53a32e6Stsarna 		if (*x < sc->sc_minx) *x = sc->sc_minx;
83f53a32e6Stsarna 		if (*y < sc->sc_miny) *y = sc->sc_miny;
84f53a32e6Stsarna 		if (sc->sc_maxx < *x)
85f53a32e6Stsarna 			*x = sc->sc_maxx;
86f53a32e6Stsarna 		if (sc->sc_maxy < *y)
87f53a32e6Stsarna 			*y = sc->sc_maxy;
88f53a32e6Stsarna 	}
89f53a32e6Stsarna }
90f53a32e6Stsarna 
91f53a32e6Stsarna int
tpcalib_ioctl(struct tpcalib_softc * sc,u_long cmd,void * data,int flag,struct lwp * l)9253524e44Schristos tpcalib_ioctl(struct tpcalib_softc *sc, u_long cmd, void *data,
93168cd830Schristos     int flag, struct lwp *l)
94f53a32e6Stsarna {
955442d49eSuwe 	const struct wsmouse_calibcoords *d;
96f53a32e6Stsarna 	int s;
97f53a32e6Stsarna 
98f53a32e6Stsarna 	switch (cmd) {
99f53a32e6Stsarna 	case WSMOUSEIO_SCALIBCOORDS:
100f53a32e6Stsarna 		s = sizeof(struct wsmouse_calibcoord);
1015442d49eSuwe 		d = (const struct wsmouse_calibcoords *)data;
102f53a32e6Stsarna 		if (d->samplelen == WSMOUSE_CALIBCOORDS_RESET) {
103f53a32e6Stsarna 			tpcalib_reset(sc);
10407d31156Smacallan 		}
10507d31156Smacallan 		if (d->samplelen > 0) {
106f53a32e6Stsarna 			if (mra_Y_AX1_BX2_C(&d->samples[0].x, s,
107f53a32e6Stsarna 				    &d->samples[0].rawx, s,
108f53a32e6Stsarna 				    &d->samples[0].rawy, s,
109f53a32e6Stsarna 				    d->samplelen, SCALE,
110f53a32e6Stsarna 				    &sc->sc_ax, &sc->sc_bx, &sc->sc_cx) ||
111f53a32e6Stsarna 			    mra_Y_AX1_BX2_C(&d->samples[0].y, s,
112f53a32e6Stsarna 				    &d->samples[0].rawx, s,
113f53a32e6Stsarna 				    &d->samples[0].rawy, s,
114f53a32e6Stsarna 				    d->samplelen, SCALE,
115f53a32e6Stsarna 				    &sc->sc_ay, &sc->sc_by, &sc->sc_cy)) {
116f53a32e6Stsarna 				printf("tpcalib: MRA error");
117f53a32e6Stsarna 				tpcalib_reset(sc);
118f53a32e6Stsarna 
119f53a32e6Stsarna 				return (EINVAL);
12007d31156Smacallan 			}
12107d31156Smacallan 		}
122f53a32e6Stsarna 		sc->sc_minx = d->minx;
123f53a32e6Stsarna 		sc->sc_maxx = d->maxx;
124f53a32e6Stsarna 		sc->sc_miny = d->miny;
125f53a32e6Stsarna 		sc->sc_maxy = d->maxy;
126f53a32e6Stsarna 		sc->sc_saved = *d;
127f53a32e6Stsarna 		DPRINTF(("tpcalib: x=%d~%d y=%d~%d\n",
128f53a32e6Stsarna 		    sc->sc_minx, sc->sc_maxx,
129f53a32e6Stsarna 		    sc->sc_miny, sc->sc_maxy));
130f53a32e6Stsarna 		DPRINTF(("tpcalib: Ax=%d Bx=%d Cx=%d\n",
131f53a32e6Stsarna 		    sc->sc_ax, sc->sc_bx, sc->sc_cx));
132f53a32e6Stsarna 		DPRINTF(("tpcalib: Ay=%d By=%d Cy=%d\n",
133f53a32e6Stsarna 		    sc->sc_ay, sc->sc_by, sc->sc_cy));
13407d31156Smacallan 
135f53a32e6Stsarna 		break;
136f53a32e6Stsarna 
137f53a32e6Stsarna 	case WSMOUSEIO_GCALIBCOORDS:
1385442d49eSuwe 		*(struct wsmouse_calibcoords *)data = sc->sc_saved;
139f53a32e6Stsarna 		break;
140f53a32e6Stsarna 
141f53a32e6Stsarna 	default:
142f53a32e6Stsarna 		return (EPASSTHROUGH);
143f53a32e6Stsarna 	}
144f53a32e6Stsarna 	return (0);
145f53a32e6Stsarna }
146