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
|
/*
* HID driver for some samsung "special" devices
*
* Copyright (c) 1999 Andreas Gal
* Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
* Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
* Copyright (c) 2006-2007 Jiri Kosina
* Copyright (c) 2007 Paul Walmsley
* Copyright (c) 2008 Jiri Slaby
* Copyright (c) 2010 Don Prince <dhprince.devel@yahoo.co.uk>
*
*
* This driver supports several HID devices:
*
* [0419:0001] Samsung IrDA remote controller (reports as Cypress USB Mouse).
* various hid report fixups for different variants.
*
* [0419:0600] Creative Desktop Wireless 6000 keyboard/mouse combo
* several key mappings used from the consumer usage page
* deviate from the USB HUT 1.12 standard.
*
*/
/*
* 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/usb.h>
#include <linux/hid.h>
#include <linux/module.h>
#include "hid-ids.h"
/*
* There are several variants for 0419:0001:
*
* 1. 184 byte report descriptor
* Vendor specific report #4 has a size of 48 bit,
* and therefore is not accepted when inspecting the descriptors.
* As a workaround we reinterpret the report as:
* Variable type, count 6, size 8 bit, log. maximum 255
* The burden to reconstruct the data is moved into user space.
*
* 2. 203 byte report descriptor
* Report #4 has an array field with logical range 0..18 instead of 1..15.
*
* 3. 135 byte report descriptor
* Report #4 has an array field with logical range 0..17 instead of 1..14.
*
* 4. 171 byte report descriptor
* Report #3 has an array field with logical range 0..1 instead of 1..3.
*/
static inline void samsung_irda_dev_trace(struct hid_device *hdev,
unsigned int rsize)
{
dev_info(&hdev->dev, "fixing up Samsung IrDA %d byte report "
"descriptor\n", rsize);
}
static void samsung_irda_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int rsize)
{
if (rsize == 184 && rdesc[175] == 0x25 && rdesc[176] == 0x40 &&
rdesc[177] == 0x75 && rdesc[178] == 0x30 &&
rdesc[179] == 0x95 && rdesc[180] == 0x01 &&
rdesc[182] == 0x40) {
samsung_irda_dev_trace(hdev, 184);
rdesc[176] = 0xff;
rdesc[178] = 0x08;
rdesc[180] = 0x06;
rdesc[182] = 0x42;
} else
if (rsize == 203 && rdesc[192] == 0x15 && rdesc[193] == 0x0 &&
rdesc[194] == 0x25 && rdesc[195] == 0x12) {
samsung_irda_dev_trace(hdev, 203);
rdesc[193] = 0x1;
rdesc[195] = 0xf;
} else
if (rsize == 135 && rdesc[124] == 0x15 && rdesc[125] == 0x0 &&
rdesc[126] == 0x25 && rdesc[127] == 0x11) {
samsung_irda_dev_trace(hdev, 135);
rdesc[125] = 0x1;
rdesc[127] = 0xe;
} else
if (rsize == 171 && rdesc[160] == 0x15 && rdesc[161] == 0x0 &&
rdesc[162] == 0x25 && rdesc[163] == 0x01) {
samsung_irda_dev_trace(hdev, 171);
rdesc[161] = 0x1;
rdesc[163] = 0x3;
}
}
#define samsung_kbd_mouse_map_key_clear(c) \
hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c))
static int samsung_kbd_mouse_input_mapping(struct hid_device *hdev,
struct hid_input *hi, struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
unsigned short ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
if (1 != ifnum || HID_UP_CONSUMER != (usage->hid & HID_USAGE_PAGE))
return 0;
dbg_hid("samsung wireless keyboard/mouse input mapping event [0x%x]\n",
usage->hid & HID_USAGE);
switch (usage->hid & HID_USAGE) {
/* report 2 */
case 0x183: samsung_kbd_mouse_map_key_clear(KEY_MEDIA); break;
case 0x195: samsung_kbd_mouse_map_key_clear(KEY_EMAIL); break;
case 0x196: samsung_kbd_mouse_map_key_clear(KEY_CALC); break;
case 0x197: samsung_kbd_mouse_map_key_clear(KEY_COMPUTER); break;
case 0x22b: samsung_kbd_mouse_map_key_clear(KEY_SEARCH); break;
case 0x22c: samsung_kbd_mouse_map_key_clear(KEY_WWW); break;
case 0x22d: samsung_kbd_mouse_map_key_clear(KEY_BACK); break;
case 0x22e: samsung_kbd_mouse_map_key_clear(KEY_FORWARD); break;
case 0x22f: samsung_kbd_mouse_map_key_clear(KEY_FAVORITES); break;
case 0x230: samsung_kbd_mouse_map_key_clear(KEY_REFRESH); break;
case 0x231: samsung_kbd_mouse_map_key_clear(KEY_STOP); break;
default:
return 0;
}
return 1;
}
static void samsung_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int rsize)
{
if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product)
samsung_irda_report_fixup(hdev, rdesc, rsize);
}
static int samsung_input_mapping(struct hid_device *hdev, struct hid_input *hi,
struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
int ret = 0;
if (USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE == hdev->product)
ret = samsung_kbd_mouse_input_mapping(hdev,
hi, field, usage, bit, max);
return ret;
}
static int samsung_probe(struct hid_device *hdev,
const struct hid_device_id *id)
{
int ret;
unsigned int cmask = HID_CONNECT_DEFAULT;
ret = hid_parse(hdev);
if (ret) {
dev_err(&hdev->dev, "parse failed\n");
goto err_free;
}
if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product) {
if (hdev->rsize == 184) {
/* disable hidinput, force hiddev */
cmask = (cmask & ~HID_CONNECT_HIDINPUT) |
HID_CONNECT_HIDDEV_FORCE;
}
}
ret = hid_hw_start(hdev, cmask);
if (ret) {
dev_err(&hdev->dev, "hw start failed\n");
goto err_free;
}
return 0;
err_free:
return ret;
}
static const struct hid_device_id samsung_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
{ }
};
MODULE_DEVICE_TABLE(hid, samsung_devices);
static struct hid_driver samsung_driver = {
.name = "samsung",
.id_table = samsung_devices,
.report_fixup = samsung_report_fixup,
.input_mapping = samsung_input_mapping,
.probe = samsung_probe,
};
static int __init samsung_init(void)
{
return hid_register_driver(&samsung_driver);
}
static void __exit samsung_exit(void)
{
hid_unregister_driver(&samsung_driver);
}
module_init(samsung_init);
module_exit(samsung_exit);
MODULE_LICENSE("GPL");
|
