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
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Alienware LEGACY WMI device driver
*
* Copyright (C) 2025 Kurt Borja <kuurtb@gmail.com>
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/wmi.h>
#include "alienware-wmi.h"
struct legacy_led_args {
struct color_platform colors;
u8 brightness;
u8 state;
} __packed;
/*
* Legacy WMI driver
*/
static int legacy_wmi_update_led(struct alienfx_priv *priv,
struct wmi_device *wdev, u8 location)
{
struct legacy_led_args legacy_args = {
.colors = priv->colors[location],
.brightness = priv->global_brightness,
.state = 0,
};
struct acpi_buffer input;
acpi_status status;
if (legacy_args.state != LEGACY_RUNNING) {
legacy_args.state = priv->lighting_control_state;
input.length = sizeof(legacy_args);
input.pointer = &legacy_args;
status = wmi_evaluate_method(LEGACY_POWER_CONTROL_GUID, 0,
location + 1, &input, NULL);
if (ACPI_FAILURE(status))
return -EIO;
return 0;
}
return alienware_wmi_command(wdev, location + 1, &legacy_args,
sizeof(legacy_args), NULL);
}
static int legacy_wmi_update_brightness(struct alienfx_priv *priv,
struct wmi_device *wdev, u8 brightness)
{
return legacy_wmi_update_led(priv, wdev, 0);
}
static int legacy_wmi_probe(struct wmi_device *wdev, const void *context)
{
struct alienfx_platdata pdata = {
.wdev = wdev,
.ops = {
.upd_led = legacy_wmi_update_led,
.upd_brightness = legacy_wmi_update_brightness,
},
};
return alienware_alienfx_setup(&pdata);
}
static const struct wmi_device_id alienware_legacy_device_id_table[] = {
{ LEGACY_CONTROL_GUID, NULL },
{ },
};
MODULE_DEVICE_TABLE(wmi, alienware_legacy_device_id_table);
static struct wmi_driver alienware_legacy_wmi_driver = {
.driver = {
.name = "alienware-wmi-alienfx",
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
},
.id_table = alienware_legacy_device_id_table,
.probe = legacy_wmi_probe,
.no_singleton = true,
};
int __init alienware_legacy_wmi_init(void)
{
return wmi_driver_register(&alienware_legacy_wmi_driver);
}
void __exit alienware_legacy_wmi_exit(void)
{
wmi_driver_unregister(&alienware_legacy_wmi_driver);
}
|
