FreeBSD/Linux Kernel Cross Reference
sys/dev/hpc/tpcalib.c
1 /* $NetBSD: tpcalib.c,v 1.6 2003/01/03 04:36:26 takemura 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 1.6 2003/01/03 04:36:26 takemura 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/hpc/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 }
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