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 <linux/acpi.h> 37 38 #include "asus-wmi.h" 39 40 #define EEEPC_WMI_FILE "eeepc-wmi" 41 42 MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>"); 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 { KE_KEY, ASUS_WMI_BRN_DOWN, { KEY_BRIGHTNESSDOWN } }, 67 { KE_KEY, ASUS_WMI_BRN_UP, { KEY_BRIGHTNESSUP } }, 68 /* Sleep already handled via generic ACPI code */ 69 { KE_KEY, 0x30, { KEY_VOLUMEUP } }, 70 { KE_KEY, 0x31, { KEY_VOLUMEDOWN } }, 71 { KE_KEY, 0x32, { KEY_MUTE } }, 72 { KE_KEY, 0x5c, { KEY_F15 } }, /* Power Gear key */ 73 { KE_KEY, 0x5d, { KEY_WLAN } }, 74 { KE_KEY, 0x6b, { KEY_TOUCHPAD_TOGGLE } }, /* Toggle Touchpad */ 75 { KE_KEY, 0x82, { KEY_CAMERA } }, 76 { KE_KEY, 0x83, { KEY_CAMERA_ZOOMIN } }, 77 { KE_KEY, 0x88, { KEY_WLAN } }, 78 { KE_KEY, 0xbd, { KEY_CAMERA } }, 79 { KE_KEY, 0xcc, { KEY_SWITCHVIDEOMODE } }, 80 { KE_KEY, 0xe0, { KEY_PROG1 } }, /* Task Manager */ 81 { KE_KEY, 0xe1, { KEY_F14 } }, /* Change Resolution */ 82 { KE_KEY, HOME_PRESS, { KEY_CONFIG } }, /* Home/Express gate key */ 83 { KE_KEY, 0xe8, { KEY_SCREENLOCK } }, 84 { KE_KEY, 0xe9, { KEY_DISPLAYTOGGLE } }, 85 { KE_KEY, 0xeb, { KEY_CAMERA_ZOOMOUT } }, 86 { KE_KEY, 0xec, { KEY_CAMERA_UP } }, 87 { KE_KEY, 0xed, { KEY_CAMERA_DOWN } }, 88 { KE_KEY, 0xee, { KEY_CAMERA_LEFT } }, 89 { KE_KEY, 0xef, { KEY_CAMERA_RIGHT } }, 90 { KE_KEY, 0xf3, { KEY_MENU } }, 91 { KE_KEY, 0xf5, { KEY_HOMEPAGE } }, 92 { KE_KEY, 0xf6, { KEY_ESC } }, 93 { KE_END, 0}, 94 }; 95 96 static struct quirk_entry quirk_asus_unknown = { 97 }; 98 99 static struct quirk_entry quirk_asus_1000h = { 100 .hotplug_wireless = true, 101 }; 102 103 static struct quirk_entry quirk_asus_et2012_type1 = { 104 .store_backlight_power = true, 105 }; 106 107 static struct quirk_entry quirk_asus_et2012_type3 = { 108 .scalar_panel_brightness = true, 109 .store_backlight_power = true, 110 }; 111 112 static struct quirk_entry quirk_asus_x101ch = { 113 /* We need this when ACPI function doesn't do this well */ 114 .wmi_backlight_power = true, 115 }; 116 117 static struct quirk_entry *quirks; 118 119 static void et2012_quirks(void) 120 { 121 const struct dmi_device *dev = NULL; 122 char oemstring[30]; 123 124 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { 125 if (sscanf(dev->name, "AEMS%24c", oemstring) == 1) { 126 if (oemstring[18] == '1') 127 quirks = &quirk_asus_et2012_type1; 128 else if (oemstring[18] == '3') 129 quirks = &quirk_asus_et2012_type3; 130 break; 131 } 132 } 133 } 134 135 static int dmi_matched(const struct dmi_system_id *dmi) 136 { 137 char *model; 138 139 quirks = dmi->driver_data; 140 141 model = (char *)dmi->matches[1].substr; 142 if (unlikely(strncmp(model, "ET2012", 6) == 0)) 143 et2012_quirks(); 144 145 return 1; 146 } 147 148 static const struct dmi_system_id asus_quirks[] = { 149 { 150 .callback = dmi_matched, 151 .ident = "ASUSTeK Computer INC. 1000H", 152 .matches = { 153 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."), 154 DMI_MATCH(DMI_PRODUCT_NAME, "1000H"), 155 }, 156 .driver_data = &quirk_asus_1000h, 157 }, 158 { 159 .callback = dmi_matched, 160 .ident = "ASUSTeK Computer INC. ET2012E/I", 161 .matches = { 162 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."), 163 DMI_MATCH(DMI_PRODUCT_NAME, "ET2012"), 164 }, 165 .driver_data = &quirk_asus_unknown, 166 }, 167 { 168 .callback = dmi_matched, 169 .ident = "ASUSTeK Computer INC. X101CH", 170 .matches = { 171 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), 172 DMI_MATCH(DMI_PRODUCT_NAME, "X101CH"), 173 }, 174 .driver_data = &quirk_asus_x101ch, 175 }, 176 { 177 .callback = dmi_matched, 178 .ident = "ASUSTeK Computer INC. 1015CX", 179 .matches = { 180 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), 181 DMI_MATCH(DMI_PRODUCT_NAME, "1015CX"), 182 }, 183 .driver_data = &quirk_asus_x101ch, 184 }, 185 {}, 186 }; 187 188 static void eeepc_wmi_key_filter(struct asus_wmi_driver *asus_wmi, int *code, 189 unsigned int *value, bool *autorelease) 190 { 191 switch (*code) { 192 case HOME_PRESS: 193 *value = 1; 194 *autorelease = 0; 195 break; 196 case HOME_HOLD: 197 *code = ASUS_WMI_KEY_IGNORE; 198 break; 199 case HOME_RELEASE: 200 *code = HOME_PRESS; 201 *value = 0; 202 *autorelease = 0; 203 break; 204 } 205 } 206 207 static acpi_status eeepc_wmi_parse_device(acpi_handle handle, u32 level, 208 void *context, void **retval) 209 { 210 pr_warn("Found legacy ATKD device (%s)\n", EEEPC_ACPI_HID); 211 *(bool *)context = true; 212 return AE_CTRL_TERMINATE; 213 } 214 215 static int eeepc_wmi_check_atkd(void) 216 { 217 acpi_status status; 218 bool found = false; 219 220 status = acpi_get_devices(EEEPC_ACPI_HID, eeepc_wmi_parse_device, 221 &found, NULL); 222 223 if (ACPI_FAILURE(status) || !found) 224 return 0; 225 return -1; 226 } 227 228 static int eeepc_wmi_probe(struct platform_device *pdev) 229 { 230 if (eeepc_wmi_check_atkd()) { 231 pr_warn("WMI device present, but legacy ATKD device is also " 232 "present and enabled\n"); 233 pr_warn("You probably booted with acpi_osi=\"Linux\" or " 234 "acpi_osi=\"!Windows 2009\"\n"); 235 pr_warn("Can't load eeepc-wmi, use default acpi_osi " 236 "(preferred) or eeepc-laptop\n"); 237 return -EBUSY; 238 } 239 return 0; 240 } 241 242 static void eeepc_wmi_quirks(struct asus_wmi_driver *driver) 243 { 244 quirks = &quirk_asus_unknown; 245 quirks->hotplug_wireless = hotplug_wireless; 246 247 dmi_check_system(asus_quirks); 248 249 driver->quirks = quirks; 250 driver->quirks->wapf = -1; 251 driver->panel_power = FB_BLANK_UNBLANK; 252 } 253 254 static struct asus_wmi_driver asus_wmi_driver = { 255 .name = EEEPC_WMI_FILE, 256 .owner = THIS_MODULE, 257 .event_guid = EEEPC_WMI_EVENT_GUID, 258 .keymap = eeepc_wmi_keymap, 259 .input_name = "Eee PC WMI hotkeys", 260 .input_phys = EEEPC_WMI_FILE "/input0", 261 .key_filter = eeepc_wmi_key_filter, 262 .probe = eeepc_wmi_probe, 263 .detect_quirks = eeepc_wmi_quirks, 264 }; 265 266 267 static int __init eeepc_wmi_init(void) 268 { 269 return asus_wmi_register_driver(&asus_wmi_driver); 270 } 271 272 static void __exit eeepc_wmi_exit(void) 273 { 274 asus_wmi_unregister_driver(&asus_wmi_driver); 275 } 276 277 module_init(eeepc_wmi_init); 278 module_exit(eeepc_wmi_exit); 279