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
|
/*
* HID driver for zydacron remote control
*
* Copyright (c) 2010 Don Prince <dhprince.devel@yahoo.co.uk>
*/
/*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*/
#include <linux/device.h>
#include <linux/hid.h>
#include <linux/module.h>
#include "hid-ids.h"
struct zc_device {
struct input_dev *input_ep81;
unsigned short last_key[4];
};
/*
* Zydacron remote control has an invalid HID report descriptor,
* that needs fixing before we can parse it.
*/
static __u8 *zc_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
if (*rsize >= 253 &&
rdesc[0x96] == 0xbc && rdesc[0x97] == 0xff &&
rdesc[0xca] == 0xbc && rdesc[0xcb] == 0xff &&
rdesc[0xe1] == 0xbc && rdesc[0xe2] == 0xff) {
dev_info(&hdev->dev,
"fixing up zydacron remote control report "
"descriptor\n");
rdesc[0x96] = rdesc[0xca] = rdesc[0xe1] = 0x0c;
rdesc[0x97] = rdesc[0xcb] = rdesc[0xe2] = 0x00;
}
return rdesc;
}
#define zc_map_key_clear(c) \
hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c))
static int zc_input_mapping(struct hid_device *hdev, struct hid_input *hi,
struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
int i;
struct zc_device *zc = hid_get_drvdata(hdev);
zc->input_ep81 = hi->input;
if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)
return 0;
dbg_hid("zynacron input mapping event [0x%x]\n",
usage->hid & HID_USAGE);
switch (usage->hid & HID_USAGE) {
/* report 2 */
case 0x10:
zc_map_key_clear(KEY_MODE);
break;
case 0x30:
zc_map_key_clear(KEY_SCREEN);
break;
case 0x70:
zc_map_key_clear(KEY_INFO);
break;
/* report 3 */
case 0x04:
zc_map_key_clear(KEY_RADIO);
break;
/* report 4 */
case 0x0d:
zc_map_key_clear(KEY_PVR);
break;
case 0x25:
zc_map_key_clear(KEY_TV);
break;
case 0x47:
zc_map_key_clear(KEY_AUDIO);
break;
case 0x49:
zc_map_key_clear(KEY_AUX);
break;
case 0x4a:
zc_map_key_clear(KEY_VIDEO);
break;
case 0x48:
zc_map_key_clear(KEY_DVD);
break;
case 0x24:
zc_map_key_clear(KEY_MENU);
break;
case 0x32:
zc_map_key_clear(KEY_TEXT);
break;
default:
return 0;
}
for (i = 0; i < 4; i++)
zc->last_key[i] = 0;
return 1;
}
static int zc_raw_event(struct hid_device *hdev, struct hid_report *report,
u8 *data, int size)
{
struct zc_device *zc = hid_get_drvdata(hdev);
int ret = 0;
unsigned key;
unsigned short index;
if (report->id == data[0]) {
/* break keys */
for (index = 0; index < 4; index++) {
key = zc->last_key[index];
if (key) {
input_event(zc->input_ep81, EV_KEY, key, 0);
zc->last_key[index] = 0;
}
}
key = 0;
switch (report->id) {
case 0x02:
case 0x03:
switch (data[1]) {
case 0x10:
key = KEY_MODE;
index = 0;
break;
case 0x30:
key = KEY_SCREEN;
index = 1;
break;
case 0x70:
key = KEY_INFO;
index = 2;
break;
case 0x04:
key = KEY_RADIO;
index = 3;
break;
}
if (key) {
input_event(zc->input_ep81, EV_KEY, key, 1);
zc->last_key[index] = key;
}
ret = 1;
break;
}
}
return ret;
}
static int zc_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
int ret;
struct zc_device *zc;
zc = kzalloc(sizeof(*zc), GFP_KERNEL);
if (zc == NULL) {
dev_err(&hdev->dev, "zydacron: can't alloc descriptor\n");
return -ENOMEM;
}
hid_set_drvdata(hdev, zc);
ret = hid_parse(hdev);
if (ret) {
dev_err(&hdev->dev, "zydacron: parse failed\n");
goto err_free;
}
ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
if (ret) {
dev_err(&hdev->dev, "zydacron: hw start failed\n");
goto err_free;
}
return 0;
err_free:
kfree(zc);
return ret;
}
static void zc_remove(struct hid_device *hdev)
{
struct zc_device *zc = hid_get_drvdata(hdev);
hid_hw_stop(hdev);
if (NULL != zc)
kfree(zc);
}
static const struct hid_device_id zc_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
{ }
};
MODULE_DEVICE_TABLE(hid, zc_devices);
static struct hid_driver zc_driver = {
.name = "zydacron",
.id_table = zc_devices,
.report_fixup = zc_report_fixup,
.input_mapping = zc_input_mapping,
.raw_event = zc_raw_event,
.probe = zc_probe,
.remove = zc_remove,
};
static int __init zc_init(void)
{
return hid_register_driver(&zc_driver);
}
static void __exit zc_exit(void)
{
hid_unregister_driver(&zc_driver);
}
module_init(zc_init);
module_exit(zc_exit);
MODULE_LICENSE("GPL");
|
