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
|
/*
* ACPI driver for Topstar notebooks (hotkeys support only)
*
* Copyright (c) 2009 Herton Ronaldo Krzesinski <herton@mandriva.com.br>
*
* Implementation inspired by existing x86 platform drivers, in special
* asus/eepc/fujitsu-laptop, thanks to their authors
*
* 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.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/acpi.h>
#include <linux/input.h>
#include <linux/input/sparse-keymap.h>
#define TOPSTAR_LAPTOP_CLASS "topstar"
struct topstar_laptop {
struct input_dev *input;
};
static const struct key_entry topstar_keymap[] = {
{ KE_KEY, 0x80, { KEY_BRIGHTNESSUP } },
{ KE_KEY, 0x81, { KEY_BRIGHTNESSDOWN } },
{ KE_KEY, 0x83, { KEY_VOLUMEUP } },
{ KE_KEY, 0x84, { KEY_VOLUMEDOWN } },
{ KE_KEY, 0x85, { KEY_MUTE } },
{ KE_KEY, 0x86, { KEY_SWITCHVIDEOMODE } },
{ KE_KEY, 0x87, { KEY_F13 } }, /* touchpad enable/disable key */
{ KE_KEY, 0x88, { KEY_WLAN } },
{ KE_KEY, 0x8a, { KEY_WWW } },
{ KE_KEY, 0x8b, { KEY_MAIL } },
{ KE_KEY, 0x8c, { KEY_MEDIA } },
/* Known non hotkey events don't handled or that we don't care yet */
{ KE_IGNORE, 0x82, }, /* backlight event */
{ KE_IGNORE, 0x8e, },
{ KE_IGNORE, 0x8f, },
{ KE_IGNORE, 0x90, },
/*
* 'G key' generate two event codes, convert to only
* one event/key code for now, consider replacing by
* a switch (3G switch - SW_3G?)
*/
{ KE_KEY, 0x96, { KEY_F14 } },
{ KE_KEY, 0x97, { KEY_F14 } },
{ KE_END, 0 }
};
static void topstar_acpi_notify(struct acpi_device *device, u32 event)
{
static bool dup_evnt[2];
bool *dup;
struct topstar_laptop *topstar = acpi_driver_data(device);
/* 0x83 and 0x84 key events comes duplicated... */
if (event == 0x83 || event == 0x84) {
dup = &dup_evnt[event - 0x83];
if (*dup) {
*dup = false;
return;
}
*dup = true;
}
if (!sparse_keymap_report_event(topstar->input, event, 1, true))
pr_info("unknown event = 0x%02x\n", event);
}
static int topstar_acpi_fncx_switch(struct acpi_device *device, bool state)
{
acpi_status status;
status = acpi_execute_simple_method(device->handle, "FNCX",
state ? 0x86 : 0x87);
if (ACPI_FAILURE(status)) {
pr_err("Unable to switch FNCX notifications\n");
return -ENODEV;
}
return 0;
}
static int topstar_input_init(struct topstar_laptop *topstar)
{
struct input_dev *input;
int err;
input = input_allocate_device();
if (!input)
return -ENOMEM;
input->name = "Topstar Laptop extra buttons";
input->phys = TOPSTAR_LAPTOP_CLASS "/input0";
input->id.bustype = BUS_HOST;
err = sparse_keymap_setup(input, topstar_keymap, NULL);
if (err) {
pr_err("Unable to setup input device keymap\n");
goto err_free_dev;
}
err = input_register_device(input);
if (err) {
pr_err("Unable to register input device\n");
goto err_free_dev;
}
topstar->input = input;
return 0;
err_free_dev:
input_free_device(input);
return err;
}
static int topstar_acpi_add(struct acpi_device *device)
{
struct topstar_laptop *topstar;
topstar = kzalloc(sizeof(struct topstar_laptop), GFP_KERNEL);
if (!topstar)
return -ENOMEM;
strcpy(acpi_device_name(device), "Topstar TPSACPI");
strcpy(acpi_device_class(device), TOPSTAR_LAPTOP_CLASS);
if (topstar_acpi_fncx_switch(device, true))
goto err_free;
if (topstar_input_init(topstar))
goto err_free;
device->driver_data = topstar;
return 0;
err_free:
kfree(topstar);
return -ENODEV;
}
static int topstar_acpi_remove(struct acpi_device *device)
{
struct topstar_laptop *topstar = acpi_driver_data(device);
topstar_acpi_fncx_switch(device, false);
input_unregister_device(topstar->input);
kfree(topstar);
return 0;
}
static const struct acpi_device_id topstar_device_ids[] = {
{ "TPS0001", 0 },
{ "TPSACPI01", 0 },
{ "", 0 },
};
MODULE_DEVICE_TABLE(acpi, topstar_device_ids);
static struct acpi_driver topstar_acpi_driver = {
.name = "Topstar laptop ACPI driver",
.class = TOPSTAR_LAPTOP_CLASS,
.ids = topstar_device_ids,
.ops = {
.add = topstar_acpi_add,
.remove = topstar_acpi_remove,
.notify = topstar_acpi_notify,
},
};
static int __init topstar_laptop_init(void)
{
int ret;
ret = acpi_bus_register_driver(&topstar_acpi_driver);
if (ret < 0)
return ret;
pr_info("ACPI extras driver loaded\n");
return 0;
}
static void __exit topstar_laptop_exit(void)
{
acpi_bus_unregister_driver(&topstar_acpi_driver);
}
module_init(topstar_laptop_init);
module_exit(topstar_laptop_exit);
MODULE_AUTHOR("Herton Ronaldo Krzesinski");
MODULE_DESCRIPTION("Topstar Laptop ACPI Extras driver");
MODULE_LICENSE("GPL");
|
