1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
|
/* $OpenBSD: umt.c,v 1.1 2018/08/25 20:31:31 jcs Exp $ */
/*
* USB multitouch touchpad driver for devices conforming to
* Windows Precision Touchpad standard
*
* https://msdn.microsoft.com/en-us/library/windows/hardware/dn467314%28v=vs.85%29.aspx
*
* Copyright (c) 2016-2018 joshua stein <jcs@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbhid.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdevs.h>
#include <dev/usb/uhidev.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wsmousevar.h>
#include <dev/hid/hid.h>
#include <dev/hid/hidmtvar.h>
struct umt_softc {
struct uhidev sc_hdev;
struct hidmt sc_mt;
int sc_rep_input;
int sc_rep_config;
int sc_rep_cap;
};
int umt_enable(void *);
int umt_open(struct uhidev *);
void umt_intr(struct uhidev *, void *, u_int);
void umt_disable(void *);
int umt_ioctl(void *, u_long, caddr_t, int, struct proc *);
const struct wsmouse_accessops umt_accessops = {
umt_enable,
umt_ioctl,
umt_disable,
};
int umt_match(struct device *, void *, void *);
int umt_find_winptp_reports(struct uhidev_softc *, void *, int,
struct umt_softc *);
void umt_attach(struct device *, struct device *, void *);
int umt_hidev_get_report(struct device *, int, int, void *, int);
int umt_hidev_set_report(struct device *, int, int, void *, int);
int umt_detach(struct device *, int);
struct cfdriver umt_cd = {
NULL, "umt", DV_DULL
};
const struct cfattach umt_ca = {
sizeof(struct umt_softc),
umt_match,
umt_attach,
umt_detach
};
int
umt_match(struct device *parent, void *match, void *aux)
{
struct uhidev_attach_arg *uha = (struct uhidev_attach_arg *)aux;
int size;
void *desc;
if (uha->reportid == UHIDEV_CLAIM_ALLREPORTID) {
uhidev_get_report_desc(uha->parent, &desc, &size);
if (umt_find_winptp_reports(uha->parent, desc, size, NULL))
return (UMATCH_DEVCLASS_DEVSUBCLASS);
}
return (UMATCH_NONE);
}
int
umt_find_winptp_reports(struct uhidev_softc *parent, void *desc, int size,
struct umt_softc *sc)
{
int repid;
int input = 0, conf = 0, cap = 0;
if (sc != NULL) {
sc->sc_rep_input = -1;
sc->sc_rep_config = -1;
sc->sc_rep_cap = -1;
}
for (repid = 0; repid < parent->sc_nrepid; repid++) {
if (hid_report_size(desc, size, hid_input, repid) == 0 &&
hid_report_size(desc, size, hid_output, repid) == 0 &&
hid_report_size(desc, size, hid_feature, repid) == 0)
continue;
if (hid_is_collection(desc, size, repid,
HID_USAGE2(HUP_DIGITIZERS, HUD_TOUCHPAD))) {
input = 1;
if (sc != NULL && sc->sc_rep_input == -1)
sc->sc_rep_input = repid;
} else if (hid_is_collection(desc, size, repid,
HID_USAGE2(HUP_DIGITIZERS, HUD_CONFIG))) {
conf = 1;
if (sc != NULL && sc->sc_rep_config == -1)
sc->sc_rep_config = repid;
}
/* capabilities report could be anywhere */
if (hid_locate(desc, size, HID_USAGE2(HUP_DIGITIZERS,
HUD_CONTACT_MAX), repid, hid_feature, NULL, NULL)) {
cap = 1;
if (sc != NULL && sc->sc_rep_cap == -1)
sc->sc_rep_cap = repid;
}
}
return (conf && input && cap);
}
void
umt_attach(struct device *parent, struct device *self, void *aux)
{
struct umt_softc *sc = (struct umt_softc *)self;
struct hidmt *mt = &sc->sc_mt;
struct uhidev_attach_arg *uha = (struct uhidev_attach_arg *)aux;
int size;
void *desc;
sc->sc_hdev.sc_intr = umt_intr;
sc->sc_hdev.sc_parent = uha->parent;
uhidev_get_report_desc(uha->parent, &desc, &size);
umt_find_winptp_reports(uha->parent, desc, size, sc);
memset(mt, 0, sizeof(sc->sc_mt));
/* assume everything has "natural scrolling" where Y axis is reversed */
mt->sc_flags = HIDMT_REVY;
mt->hidev_report_type_conv = uhidev_report_type_conv;
mt->hidev_get_report = umt_hidev_get_report;
mt->hidev_set_report = umt_hidev_set_report;
mt->sc_rep_input = sc->sc_rep_input;
mt->sc_rep_config = sc->sc_rep_config;
mt->sc_rep_cap = sc->sc_rep_cap;
if (hidmt_setup(self, mt, desc, size) != 0)
return;
hidmt_attach(mt, &umt_accessops);
}
int
umt_hidev_get_report(struct device *self, int type, int id, void *data, int len)
{
struct umt_softc *sc = (struct umt_softc *)self;
int ret;
ret = uhidev_get_report(sc->sc_hdev.sc_parent, type, id, data, len);
return (ret < len);
}
int
umt_hidev_set_report(struct device *self, int type, int id, void *data, int len)
{
struct umt_softc *sc = (struct umt_softc *)self;
int ret;
ret = uhidev_set_report(sc->sc_hdev.sc_parent, type, id, data, len);
return (ret < len);
}
int
umt_detach(struct device *self, int flags)
{
struct umt_softc *sc = (struct umt_softc *)self;
struct hidmt *mt = &sc->sc_mt;
return hidmt_detach(mt, flags);
}
void
umt_intr(struct uhidev *dev, void *buf, u_int len)
{
struct umt_softc *sc = (struct umt_softc *)dev;
struct hidmt *mt = &sc->sc_mt;
if (!mt->sc_enabled)
return;
hidmt_input(mt, (uint8_t *)buf, len);
}
int
umt_enable(void *v)
{
struct umt_softc *sc = v;
struct hidmt *mt = &sc->sc_mt;
int rv;
if ((rv = hidmt_enable(mt)) != 0)
return rv;
rv = uhidev_open(&sc->sc_hdev);
hidmt_set_input_mode(mt, HIDMT_INPUT_MODE_MT_TOUCHPAD);
return rv;
}
void
umt_disable(void *v)
{
struct umt_softc *sc = v;
struct hidmt *mt = &sc->sc_mt;
hidmt_disable(mt);
uhidev_close(&sc->sc_hdev);
}
int
umt_ioctl(void *v, u_long cmd, caddr_t data, int flag, struct proc *p)
{
struct umt_softc *sc = v;
struct hidmt *mt = &sc->sc_mt;
int rc;
rc = uhidev_ioctl(&sc->sc_hdev, cmd, data, flag, p);
if (rc != -1)
return rc;
return hidmt_ioctl(mt, cmd, data, flag, p);
}
|
