1 /*
2 * Eee PC WMI hotkey driver
3 *
4 * Copyright(C) 2010 Intel Corporation.
5 * Copyright(C) 2010-2011 Corentin Chary <corentin.chary@gmail.com>
6 *
7 * Portions based on wistron_btns.c:
8 * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
9 * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
10 * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 */
26
27 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
28
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/init.h>
32 #include <linux/input.h>
33 #include <linux/input/sparse-keymap.h>
34 #include <linux/dmi.h>
35 #include <linux/fb.h>
36 #include <acpi/acpi_bus.h>
37
38 #include "asus-wmi.h"
39
40 #define EEEPC_WMI_FILE "eeepc-wmi"
41
42 MODULE_AUTHOR("Corentin Chary <corentincj@iksaif.net>");
43 MODULE_DESCRIPTION("Eee PC WMI Hotkey Driver");
44 MODULE_LICENSE("GPL");
45
46 #define EEEPC_ACPI_HID "ASUS010" /* old _HID used in eeepc-laptop */
47
48 #define EEEPC_WMI_EVENT_GUID "ABBC0F72-8EA1-11D1-00A0-C90629100000"
49
50 MODULE_ALIAS("wmi:"EEEPC_WMI_EVENT_GUID);
51
52 static bool hotplug_wireless;
53
54 module_param(hotplug_wireless, bool, 0444);
55 MODULE_PARM_DESC(hotplug_wireless,
56 "Enable hotplug for wireless device. "
57 "If your laptop needs that, please report to "
58 "acpi4asus-user@lists.sourceforge.net.");
59
60 /* Values for T101MT "Home" key */
61 #define HOME_PRESS 0xe4
62 #define HOME_HOLD 0xea
63 #define HOME_RELEASE 0xe5
64
65 static const struct key_entry eeepc_wmi_keymap[] = {
66 /* Sleep already handled via generic ACPI code */
67 { KE_KEY, 0x30, { KEY_VOLUMEUP } },
68 { KE_KEY, 0x31, { KEY_VOLUMEDOWN } },
69 { KE_KEY, 0x32, { KEY_MUTE } },
70 { KE_KEY, 0x5c, { KEY_F15 } }, /* Power Gear key */
71 { KE_KEY, 0x5d, { KEY_WLAN } },
72 { KE_KEY, 0x6b, { KEY_TOUCHPAD_TOGGLE } }, /* Toggle Touchpad */
73 { KE_KEY, 0x82, { KEY_CAMERA } },
74 { KE_KEY, 0x83, { KEY_CAMERA_ZOOMIN } },
75 { KE_KEY, 0x88, { KEY_WLAN } },
76 { KE_KEY, 0xbd, { KEY_CAMERA } },
77 { KE_KEY, 0xcc, { KEY_SWITCHVIDEOMODE } },
78 { KE_KEY, 0xe0, { KEY_PROG1 } }, /* Task Manager */
79 { KE_KEY, 0xe1, { KEY_F14 } }, /* Change Resolution */
80 { KE_KEY, HOME_PRESS, { KEY_CONFIG } }, /* Home/Express gate key */
81 { KE_KEY, 0xe8, { KEY_SCREENLOCK } },
82 { KE_KEY, 0xe9, { KEY_BRIGHTNESS_ZERO } },
83 { KE_KEY, 0xeb, { KEY_CAMERA_ZOOMOUT } },
84 { KE_KEY, 0xec, { KEY_CAMERA_UP } },
85 { KE_KEY, 0xed, { KEY_CAMERA_DOWN } },
86 { KE_KEY, 0xee, { KEY_CAMERA_LEFT } },
87 { KE_KEY, 0xef, { KEY_CAMERA_RIGHT } },
88 { KE_KEY, 0xf3, { KEY_MENU } },
89 { KE_KEY, 0xf5, { KEY_HOMEPAGE } },
90 { KE_KEY, 0xf6, { KEY_ESC } },
91 { KE_END, 0},
92 };
93
94 static struct quirk_entry quirk_asus_unknown = {
95 };
96
97 static struct quirk_entry quirk_asus_1000h = {
98 .hotplug_wireless = true,
99 };
100
101 static struct quirk_entry quirk_asus_et2012_type1 = {
102 .store_backlight_power = true,
103 };
104
105 static struct quirk_entry quirk_asus_et2012_type3 = {
106 .scalar_panel_brightness = true,
107 .store_backlight_power = true,
108 };
109
110 static struct quirk_entry *quirks;
111
et2012_quirks(void)112 static void et2012_quirks(void)
113 {
114 const struct dmi_device *dev = NULL;
115 char oemstring[30];
116
117 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
118 if (sscanf(dev->name, "AEMS%24c", oemstring) == 1) {
119 if (oemstring[18] == '1')
120 quirks = &quirk_asus_et2012_type1;
121 else if (oemstring[18] == '3')
122 quirks = &quirk_asus_et2012_type3;
123 break;
124 }
125 }
126 }
127
dmi_matched(const struct dmi_system_id * dmi)128 static int dmi_matched(const struct dmi_system_id *dmi)
129 {
130 char *model;
131
132 quirks = dmi->driver_data;
133
134 model = (char *)dmi->matches[1].substr;
135 if (unlikely(strncmp(model, "ET2012", 6) == 0))
136 et2012_quirks();
137
138 return 1;
139 }
140
141 static struct dmi_system_id asus_quirks[] = {
142 {
143 .callback = dmi_matched,
144 .ident = "ASUSTeK Computer INC. 1000H",
145 .matches = {
146 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."),
147 DMI_MATCH(DMI_PRODUCT_NAME, "1000H"),
148 },
149 .driver_data = &quirk_asus_1000h,
150 },
151 {
152 .callback = dmi_matched,
153 .ident = "ASUSTeK Computer INC. ET2012E/I",
154 .matches = {
155 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."),
156 DMI_MATCH(DMI_PRODUCT_NAME, "ET2012"),
157 },
158 .driver_data = &quirk_asus_unknown,
159 },
160 {},
161 };
162
eeepc_wmi_key_filter(struct asus_wmi_driver * asus_wmi,int * code,unsigned int * value,bool * autorelease)163 static void eeepc_wmi_key_filter(struct asus_wmi_driver *asus_wmi, int *code,
164 unsigned int *value, bool *autorelease)
165 {
166 switch (*code) {
167 case HOME_PRESS:
168 *value = 1;
169 *autorelease = 0;
170 break;
171 case HOME_HOLD:
172 *code = ASUS_WMI_KEY_IGNORE;
173 break;
174 case HOME_RELEASE:
175 *code = HOME_PRESS;
176 *value = 0;
177 *autorelease = 0;
178 break;
179 }
180 }
181
eeepc_wmi_parse_device(acpi_handle handle,u32 level,void * context,void ** retval)182 static acpi_status eeepc_wmi_parse_device(acpi_handle handle, u32 level,
183 void *context, void **retval)
184 {
185 pr_warn("Found legacy ATKD device (%s)\n", EEEPC_ACPI_HID);
186 *(bool *)context = true;
187 return AE_CTRL_TERMINATE;
188 }
189
eeepc_wmi_check_atkd(void)190 static int eeepc_wmi_check_atkd(void)
191 {
192 acpi_status status;
193 bool found = false;
194
195 status = acpi_get_devices(EEEPC_ACPI_HID, eeepc_wmi_parse_device,
196 &found, NULL);
197
198 if (ACPI_FAILURE(status) || !found)
199 return 0;
200 return -1;
201 }
202
eeepc_wmi_probe(struct platform_device * pdev)203 static int eeepc_wmi_probe(struct platform_device *pdev)
204 {
205 if (eeepc_wmi_check_atkd()) {
206 pr_warn("WMI device present, but legacy ATKD device is also "
207 "present and enabled\n");
208 pr_warn("You probably booted with acpi_osi=\"Linux\" or "
209 "acpi_osi=\"!Windows 2009\"\n");
210 pr_warn("Can't load eeepc-wmi, use default acpi_osi "
211 "(preferred) or eeepc-laptop\n");
212 return -EBUSY;
213 }
214 return 0;
215 }
216
eeepc_wmi_quirks(struct asus_wmi_driver * driver)217 static void eeepc_wmi_quirks(struct asus_wmi_driver *driver)
218 {
219 quirks = &quirk_asus_unknown;
220 quirks->hotplug_wireless = hotplug_wireless;
221
222 dmi_check_system(asus_quirks);
223
224 driver->quirks = quirks;
225 driver->quirks->wapf = -1;
226 driver->panel_power = FB_BLANK_UNBLANK;
227 }
228
229 static struct asus_wmi_driver asus_wmi_driver = {
230 .name = EEEPC_WMI_FILE,
231 .owner = THIS_MODULE,
232 .event_guid = EEEPC_WMI_EVENT_GUID,
233 .keymap = eeepc_wmi_keymap,
234 .input_name = "Eee PC WMI hotkeys",
235 .input_phys = EEEPC_WMI_FILE "/input0",
236 .key_filter = eeepc_wmi_key_filter,
237 .probe = eeepc_wmi_probe,
238 .detect_quirks = eeepc_wmi_quirks,
239 };
240
241
eeepc_wmi_init(void)242 static int __init eeepc_wmi_init(void)
243 {
244 return asus_wmi_register_driver(&asus_wmi_driver);
245 }
246
eeepc_wmi_exit(void)247 static void __exit eeepc_wmi_exit(void)
248 {
249 asus_wmi_unregister_driver(&asus_wmi_driver);
250 }
251
252 module_init(eeepc_wmi_init);
253 module_exit(eeepc_wmi_exit);
254