summaryrefslogtreecommitdiffstats
path: root/drivers/platform/x86/eeepc-wmi.c
blob: 4aa867a9b88b8411f5231e9ac7a4298ffc9b8860 (plain)
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
/*
 * Eee PC WMI hotkey driver
 *
 * Copyright(C) 2010 Intel Corporation.
 * Copyright(C) 2010-2011 Corentin Chary <corentin.chary@gmail.com>
 *
 * 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
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/input/sparse-keymap.h>
#include <linux/dmi.h>
#include <acpi/acpi_bus.h>

#include "asus-wmi.h"

#define	EEEPC_WMI_FILE	"eeepc-wmi"

MODULE_AUTHOR("Corentin Chary <corentincj@iksaif.net>");
MODULE_DESCRIPTION("Eee PC WMI Hotkey Driver");
MODULE_LICENSE("GPL");

#define EEEPC_ACPI_HID		"ASUS010" /* old _HID used in eeepc-laptop */

#define EEEPC_WMI_EVENT_GUID	"ABBC0F72-8EA1-11D1-00A0-C90629100000"

MODULE_ALIAS("wmi:"EEEPC_WMI_EVENT_GUID);

static bool hotplug_wireless;

module_param(hotplug_wireless, bool, 0444);
MODULE_PARM_DESC(hotplug_wireless,
		 "Enable hotplug for wireless device. "
		 "If your laptop needs that, please report to "
		 "acpi4asus-user@lists.sourceforge.net.");

static const struct key_entry eeepc_wmi_keymap[] = {
	/* Sleep already handled via generic ACPI code */
	{ KE_KEY, 0x30, { KEY_VOLUMEUP } },
	{ KE_KEY, 0x31, { KEY_VOLUMEDOWN } },
	{ KE_KEY, 0x32, { KEY_MUTE } },
	{ KE_KEY, 0x5c, { KEY_F15 } }, /* Power Gear key */
	{ KE_KEY, 0x5d, { KEY_WLAN } },
	{ KE_KEY, 0x6b, { KEY_TOUCHPAD_TOGGLE } }, /* Toggle Touchpad */
	{ KE_KEY, 0x82, { KEY_CAMERA } },
	{ KE_KEY, 0x83, { KEY_CAMERA_ZOOMIN } },
	{ KE_KEY, 0x88, { KEY_WLAN } },
	{ KE_KEY, 0xbd, { KEY_CAMERA } },
	{ KE_KEY, 0xcc, { KEY_SWITCHVIDEOMODE } },
	{ KE_KEY, 0xe0, { KEY_PROG1 } }, /* Task Manager */
	{ KE_KEY, 0xe1, { KEY_F14 } }, /* Change Resolution */
	{ KE_KEY, 0xe8, { KEY_SCREENLOCK } },
	{ KE_KEY, 0xe9, { KEY_BRIGHTNESS_ZERO } },
	{ KE_KEY, 0xeb, { KEY_CAMERA_ZOOMOUT } },
	{ KE_KEY, 0xec, { KEY_CAMERA_UP } },
	{ KE_KEY, 0xed, { KEY_CAMERA_DOWN } },
	{ KE_KEY, 0xee, { KEY_CAMERA_LEFT } },
	{ KE_KEY, 0xef, { KEY_CAMERA_RIGHT } },
	{ KE_END, 0},
};

static acpi_status eeepc_wmi_parse_device(acpi_handle handle, u32 level,
						 void *context, void **retval)
{
	pr_warn("Found legacy ATKD device (%s)\n", EEEPC_ACPI_HID);
	*(bool *)context = true;
	return AE_CTRL_TERMINATE;
}

static int eeepc_wmi_check_atkd(void)
{
	acpi_status status;
	bool found = false;

	status = acpi_get_devices(EEEPC_ACPI_HID, eeepc_wmi_parse_device,
				  &found, NULL);

	if (ACPI_FAILURE(status) || !found)
		return 0;
	return -1;
}

static int eeepc_wmi_probe(struct platform_device *pdev)
{
	if (eeepc_wmi_check_atkd()) {
		pr_warn("WMI device present, but legacy ATKD device is also "
			"present and enabled\n");
		pr_warn("You probably booted with acpi_osi=\"Linux\" or "
			"acpi_osi=\"!Windows 2009\"\n");
		pr_warn("Can't load eeepc-wmi, use default acpi_osi "
			"(preferred) or eeepc-laptop\n");
		return -EBUSY;
	}
	return 0;
}

static void eeepc_dmi_check(struct asus_wmi_driver *driver)
{
	const char *model;

	model = dmi_get_system_info(DMI_PRODUCT_NAME);
	if (!model)
		return;

	/*
	 * Whitelist for wlan hotplug
	 *
	 * Asus 1000H needs the current hotplug code to handle
	 * Fn+F2 correctly. We may add other Asus here later, but
	 * it seems that most of the laptops supported by asus-wmi
	 * don't need to be on this list
	 */
	if (strcmp(model, "1000H") == 0) {
		driver->hotplug_wireless = true;
		pr_info("wlan hotplug enabled\n");
	}
}

static void eeepc_wmi_quirks(struct asus_wmi_driver *driver)
{
	driver->hotplug_wireless = hotplug_wireless;
	eeepc_dmi_check(driver);
}

static struct asus_wmi_driver asus_wmi_driver = {
	.name = EEEPC_WMI_FILE,
	.owner = THIS_MODULE,
	.event_guid = EEEPC_WMI_EVENT_GUID,
	.keymap = eeepc_wmi_keymap,
	.input_name = "Eee PC WMI hotkeys",
	.input_phys = EEEPC_WMI_FILE "/input0",
	.probe = eeepc_wmi_probe,
	.quirks = eeepc_wmi_quirks,
};


static int __init eeepc_wmi_init(void)
{
	return asus_wmi_register_driver(&asus_wmi_driver);
}

static void __exit eeepc_wmi_exit(void)
{
	asus_wmi_unregister_driver(&asus_wmi_driver);
}

module_init(eeepc_wmi_init);
module_exit(eeepc_wmi_exit);
OpenPOWER on IntegriCloud