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
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* toshiba_wmi.c - Toshiba WMI Hotkey Driver
*
* Copyright (C) 2015 Azael Avalos <coproscefalo@gmail.com>
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/acpi.h>
#include <linux/input.h>
#include <linux/input/sparse-keymap.h>
#include <linux/dmi.h>
MODULE_AUTHOR("Azael Avalos");
MODULE_DESCRIPTION("Toshiba WMI Hotkey Driver");
MODULE_LICENSE("GPL");
#define WMI_EVENT_GUID "59142400-C6A3-40FA-BADB-8A2652834100"
MODULE_ALIAS("wmi:"WMI_EVENT_GUID);
static struct input_dev *toshiba_wmi_input_dev;
static const struct key_entry toshiba_wmi_keymap[] __initconst = {
/* TODO: Add keymap values once found... */
/*{ KE_KEY, 0x00, { KEY_ } },*/
{ KE_END, 0 }
};
static void toshiba_wmi_notify(u32 value, void *context)
{
struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *obj;
acpi_status status;
status = wmi_get_event_data(value, &response);
if (ACPI_FAILURE(status)) {
pr_err("Bad event status 0x%x\n", status);
return;
}
obj = (union acpi_object *)response.pointer;
if (!obj)
return;
/* TODO: Add proper checks once we have data */
pr_debug("Unknown event received, obj type %x\n", obj->type);
kfree(response.pointer);
}
static const struct dmi_system_id toshiba_wmi_dmi_table[] __initconst = {
{
.ident = "Toshiba laptop",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
},
},
{}
};
static int __init toshiba_wmi_input_setup(void)
{
acpi_status status;
int err;
toshiba_wmi_input_dev = input_allocate_device();
if (!toshiba_wmi_input_dev)
return -ENOMEM;
toshiba_wmi_input_dev->name = "Toshiba WMI hotkeys";
toshiba_wmi_input_dev->phys = "wmi/input0";
toshiba_wmi_input_dev->id.bustype = BUS_HOST;
err = sparse_keymap_setup(toshiba_wmi_input_dev,
toshiba_wmi_keymap, NULL);
if (err)
goto err_free_dev;
status = wmi_install_notify_handler(WMI_EVENT_GUID,
toshiba_wmi_notify, NULL);
if (ACPI_FAILURE(status)) {
err = -EIO;
goto err_free_dev;
}
err = input_register_device(toshiba_wmi_input_dev);
if (err)
goto err_remove_notifier;
return 0;
err_remove_notifier:
wmi_remove_notify_handler(WMI_EVENT_GUID);
err_free_dev:
input_free_device(toshiba_wmi_input_dev);
return err;
}
static void toshiba_wmi_input_destroy(void)
{
wmi_remove_notify_handler(WMI_EVENT_GUID);
input_unregister_device(toshiba_wmi_input_dev);
}
static int __init toshiba_wmi_init(void)
{
int ret;
if (!wmi_has_guid(WMI_EVENT_GUID) ||
!dmi_check_system(toshiba_wmi_dmi_table))
return -ENODEV;
ret = toshiba_wmi_input_setup();
if (ret) {
pr_err("Failed to setup input device\n");
return ret;
}
pr_info("Toshiba WMI Hotkey Driver\n");
return 0;
}
static void __exit toshiba_wmi_exit(void)
{
if (wmi_has_guid(WMI_EVENT_GUID))
toshiba_wmi_input_destroy();
}
module_init(toshiba_wmi_init);
module_exit(toshiba_wmi_exit);
|
