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
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
|
/*
* Stephen Evanchik <evanchsa@gmail.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* Trademarks are the property of their respective owners.
*/
#include <linux/delay.h>
#include <linux/serio.h>
#include <linux/module.h>
#include <linux/input.h>
#include <linux/libps2.h>
#include <linux/proc_fs.h>
#include <asm/uaccess.h>
#include "psmouse.h"
#include "trackpoint.h"
/*
* Device IO: read, write and toggle bit
*/
static int trackpoint_read(struct ps2dev *ps2dev, unsigned char loc, unsigned char *results)
{
if (ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, TP_COMMAND)) ||
ps2_command(ps2dev, results, MAKE_PS2_CMD(0, 1, loc))) {
return -1;
}
return 0;
}
static int trackpoint_write(struct ps2dev *ps2dev, unsigned char loc, unsigned char val)
{
if (ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, TP_COMMAND)) ||
ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, TP_WRITE_MEM)) ||
ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, loc)) ||
ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, val))) {
return -1;
}
return 0;
}
static int trackpoint_toggle_bit(struct ps2dev *ps2dev, unsigned char loc, unsigned char mask)
{
/* Bad things will happen if the loc param isn't in this range */
if (loc < 0x20 || loc >= 0x2F)
return -1;
if (ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, TP_COMMAND)) ||
ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, TP_TOGGLE)) ||
ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, loc)) ||
ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, mask))) {
return -1;
}
return 0;
}
/*
* Trackpoint-specific attributes
*/
struct trackpoint_attr_data {
size_t field_offset;
unsigned char command;
unsigned char mask;
unsigned char inverted;
};
static ssize_t trackpoint_show_int_attr(struct psmouse *psmouse, void *data, char *buf)
{
struct trackpoint_data *tp = psmouse->private;
struct trackpoint_attr_data *attr = data;
unsigned char value = *(unsigned char *)((char *)tp + attr->field_offset);
if (attr->inverted)
value = !value;
return sprintf(buf, "%u\n", value);
}
static ssize_t trackpoint_set_int_attr(struct psmouse *psmouse, void *data,
const char *buf, size_t count)
{
struct trackpoint_data *tp = psmouse->private;
struct trackpoint_attr_data *attr = data;
unsigned char *field = (unsigned char *)((char *)tp + attr->field_offset);
unsigned long value;
if (strict_strtoul(buf, 10, &value) || value > 255)
return -EINVAL;
*field = value;
trackpoint_write(&psmouse->ps2dev, attr->command, value);
return count;
}
#define TRACKPOINT_INT_ATTR(_name, _command) \
static struct trackpoint_attr_data trackpoint_attr_##_name = { \
.field_offset = offsetof(struct trackpoint_data, _name), \
.command = _command, \
}; \
PSMOUSE_DEFINE_ATTR(_name, S_IWUSR | S_IRUGO, \
&trackpoint_attr_##_name, \
trackpoint_show_int_attr, trackpoint_set_int_attr)
static ssize_t trackpoint_set_bit_attr(struct psmouse *psmouse, void *data,
const char *buf, size_t count)
{
struct trackpoint_data *tp = psmouse->private;
struct trackpoint_attr_data *attr = data;
unsigned char *field = (unsigned char *)((char *)tp + attr->field_offset);
unsigned long value;
if (strict_strtoul(buf, 10, &value) || value > 1)
return -EINVAL;
if (attr->inverted)
value = !value;
if (*field != value) {
*field = value;
trackpoint_toggle_bit(&psmouse->ps2dev, attr->command, attr->mask);
}
return count;
}
#define TRACKPOINT_BIT_ATTR(_name, _command, _mask, _inv) \
static struct trackpoint_attr_data trackpoint_attr_##_name = { \
.field_offset = offsetof(struct trackpoint_data, _name), \
.command = _command, \
.mask = _mask, \
.inverted = _inv, \
}; \
PSMOUSE_DEFINE_ATTR(_name, S_IWUSR | S_IRUGO, \
&trackpoint_attr_##_name, \
trackpoint_show_int_attr, trackpoint_set_bit_attr)
TRACKPOINT_INT_ATTR(sensitivity, TP_SENS);
TRACKPOINT_INT_ATTR(speed, TP_SPEED);
TRACKPOINT_INT_ATTR(inertia, TP_INERTIA);
TRACKPOINT_INT_ATTR(reach, TP_REACH);
TRACKPOINT_INT_ATTR(draghys, TP_DRAGHYS);
TRACKPOINT_INT_ATTR(mindrag, TP_MINDRAG);
TRACKPOINT_INT_ATTR(thresh, TP_THRESH);
TRACKPOINT_INT_ATTR(upthresh, TP_UP_THRESH);
TRACKPOINT_INT_ATTR(ztime, TP_Z_TIME);
TRACKPOINT_INT_ATTR(jenks, TP_JENKS_CURV);
TRACKPOINT_BIT_ATTR(press_to_select, TP_TOGGLE_PTSON, TP_MASK_PTSON, 0);
TRACKPOINT_BIT_ATTR(skipback, TP_TOGGLE_SKIPBACK, TP_MASK_SKIPBACK, 0);
TRACKPOINT_BIT_ATTR(ext_dev, TP_TOGGLE_EXT_DEV, TP_MASK_EXT_DEV, 1);
static struct attribute *trackpoint_attrs[] = {
&psmouse_attr_sensitivity.dattr.attr,
&psmouse_attr_speed.dattr.attr,
&psmouse_attr_inertia.dattr.attr,
&psmouse_attr_reach.dattr.attr,
&psmouse_attr_draghys.dattr.attr,
&psmouse_attr_mindrag.dattr.attr,
&psmouse_attr_thresh.dattr.attr,
&psmouse_attr_upthresh.dattr.attr,
&psmouse_attr_ztime.dattr.attr,
&psmouse_attr_jenks.dattr.attr,
&psmouse_attr_press_to_select.dattr.attr,
&psmouse_attr_skipback.dattr.attr,
&psmouse_attr_ext_dev.dattr.attr,
NULL
};
static struct attribute_group trackpoint_attr_group = {
.attrs = trackpoint_attrs,
};
static int trackpoint_start_protocol(struct psmouse *psmouse, unsigned char *firmware_id)
{
unsigned char param[2] = { 0 };
if (ps2_command(&psmouse->ps2dev, param, MAKE_PS2_CMD(0, 2, TP_READ_ID)))
return -1;
if (param[0] != TP_MAGIC_IDENT)
return -1;
if (firmware_id)
*firmware_id = param[1];
return 0;
}
static int trackpoint_sync(struct psmouse *psmouse)
{
struct trackpoint_data *tp = psmouse->private;
unsigned char toggle;
/* Disable features that may make device unusable with this driver */
trackpoint_read(&psmouse->ps2dev, TP_TOGGLE_TWOHAND, &toggle);
if (toggle & TP_MASK_TWOHAND)
trackpoint_toggle_bit(&psmouse->ps2dev, TP_TOGGLE_TWOHAND, TP_MASK_TWOHAND);
trackpoint_read(&psmouse->ps2dev, TP_TOGGLE_SOURCE_TAG, &toggle);
if (toggle & TP_MASK_SOURCE_TAG)
trackpoint_toggle_bit(&psmouse->ps2dev, TP_TOGGLE_SOURCE_TAG, TP_MASK_SOURCE_TAG);
trackpoint_read(&psmouse->ps2dev, TP_TOGGLE_MB, &toggle);
if (toggle & TP_MASK_MB)
trackpoint_toggle_bit(&psmouse->ps2dev, TP_TOGGLE_MB, TP_MASK_MB);
/* Push the config to the device */
trackpoint_write(&psmouse->ps2dev, TP_SENS, tp->sensitivity);
trackpoint_write(&psmouse->ps2dev, TP_INERTIA, tp->inertia);
trackpoint_write(&psmouse->ps2dev, TP_SPEED, tp->speed);
trackpoint_write(&psmouse->ps2dev, TP_REACH, tp->reach);
trackpoint_write(&psmouse->ps2dev, TP_DRAGHYS, tp->draghys);
trackpoint_write(&psmouse->ps2dev, TP_MINDRAG, tp->mindrag);
trackpoint_write(&psmouse->ps2dev, TP_THRESH, tp->thresh);
trackpoint_write(&psmouse->ps2dev, TP_UP_THRESH, tp->upthresh);
trackpoint_write(&psmouse->ps2dev, TP_Z_TIME, tp->ztime);
trackpoint_write(&psmouse->ps2dev, TP_JENKS_CURV, tp->jenks);
trackpoint_read(&psmouse->ps2dev, TP_TOGGLE_PTSON, &toggle);
if (((toggle & TP_MASK_PTSON) == TP_MASK_PTSON) != tp->press_to_select)
trackpoint_toggle_bit(&psmouse->ps2dev, TP_TOGGLE_PTSON, TP_MASK_PTSON);
trackpoint_read(
|