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
|
/*
* Eee PC WMI hotkey driver
*
* Copyright(C) 2010 Intel Corporation.
*
* Portions based on wistron_btns.c:
* Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
* Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
* Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/input.h>
#include <linux/input/sparse-keymap.h>
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
MODULE_AUTHOR("Yong Wang <yong.y.wang@intel.com>");
MODULE_DESCRIPTION("Eee PC WMI Hotkey Driver");
MODULE_LICENSE("GPL");
#define EEEPC_WMI_EVENT_GUID "ABBC0F72-8EA1-11D1-00A0-C90629100000"
MODULE_ALIAS("wmi:"EEEPC_WMI_EVENT_GUID);
#define NOTIFY_BRNUP_MIN 0x11
#define NOTIFY_BRNUP_MAX 0x1f
#define NOTIFY_BRNDOWN_MIN 0x20
#define NOTIFY_BRNDOWN_MAX 0x2e
static const struct key_entry eeepc_wmi_keymap[] = {
/* Sleep already handled via generic ACPI code */
{ KE_KEY, 0x5d, { KEY_WLAN } },
{ KE_KEY, 0x32, { KEY_MUTE } },
{ KE_KEY, 0x31, { KEY_VOLUMEDOWN } },
{ KE_KEY, 0x30, { KEY_VOLUMEUP } },
{ KE_IGNORE, NOTIFY_BRNDOWN_MIN, { KEY_BRIGHTNESSDOWN } },
{ KE_IGNORE, NOTIFY_BRNUP_MIN, { KEY_BRIGHTNESSUP } },
{ KE_KEY, 0xcc, { KEY_SWITCHVIDEOMODE } },
{ KE_END, 0},
};
static struct input_dev *eeepc_wmi_input_dev;
static void eeepc_wmi_notify(u32 value, void *context)
{
struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *obj;
acpi_status status;
int code;
status = wmi_get_event_data(value, &response);
if (status != AE_OK) {
pr_err("EEEPC WMI: bad event status 0x%x\n", status);
return;
}
obj = (union acpi_object *)response.pointer;
if (obj && obj->type == ACPI_TYPE_INTEGER) {
code = obj->integer.value;
if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
code = NOTIFY_BRNUP_MIN;
else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
code = NOTIFY_BRNDOWN_MIN;
if (!sparse_keymap_report_event(eeepc_wmi_input_dev,
code, 1, true))
pr_info("EEEPC WMI: Unknown key %x pressed\n", code);
}
kfree(obj);
}
static int eeepc_wmi_input_setup(void)
{
int err;
eeepc_wmi_input_dev = input_allocate_device();
if (!eeepc_wmi_input_dev)
return -ENOMEM;
eeepc_wmi_input_dev->name = "Eee PC WMI hotkeys";
eeepc_wmi_input_dev->phys = "wmi/input0";
eeepc_wmi_input_dev->id.bustype = BUS_HOST;
err = sparse_keymap_setup(eeepc_wmi_input_dev, eeepc_wmi_keymap, NULL);
if (err)
goto err_free_dev;
err = input_register_device(eeepc_wmi_input_dev);
if (err)
goto err_free_keymap;
return 0;
err_free_keymap:
sparse_keymap_free(eeepc_wmi_input_dev);
err_free_dev:
input_free_device(eeepc_wmi_input_dev);
return err;
}
static int __init eeepc_wmi_init(void)
{
int err;
acpi_status status;
if (!wmi_has_guid(EEEPC_WMI_EVENT_GUID)) {
pr_warning("EEEPC WMI: No known WMI GUID found\n");
return -ENODEV;
}
err = eeepc_wmi_input_setup();
if (err)
return err;
status = wmi_install_notify_handler(EEEPC_WMI_EVENT_GUID,
eeepc_wmi_notify, NULL);
if (ACPI_FAILURE(status)) {
sparse_keymap_free(eeepc_wmi_input_dev);
input_unregister_device(eeepc_wmi_input_dev);
pr_err("EEEPC WMI: Unable to register notify handler - %d\n",
status);
return -ENODEV;
}
return 0;
}
static void __exit eeepc_wmi_exit(void)
{
wmi_remove_notify_handler(EEEPC_WMI_EVENT_GUID);
sparse_keymap_free(eeepc_wmi_input_dev);
input_unregister_device(eeepc_wmi_input_dev);
}
module_init(eeepc_wmi_init);
module_exit(eeepc_wmi_exit);
|
