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 <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 /* 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_DISPLAYTOGGLE } }, 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 quirk_asus_x101ch = { 111 /* We need this when ACPI function doesn't do this well */ 112 .wmi_backlight_power = true, 113 }; 114 115 static struct quirk_entry *quirks; 116 117 static void et2012_quirks(void) 118 { 119 const struct dmi_device *dev = NULL; 120 char oemstring[30]; 121 122 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { 123 if (sscanf(dev->name, "AEMS%24c", oemstring) == 1) { 124 if (oemstring[18] == '1') 125 quirks = &quirk_asus_et2012_type1; 126 else if (oemstring[18] == '3') 127 quirks = &quirk_asus_et2012_type3; 128 break; 129 } 130 } 131 } 132 133 static int dmi_matched(const struct dmi_system_id *dmi) 134 { 135 char *model; 136 137 quirks = dmi->driver_data; 138 139 model = (char *)dmi->matches[1].substr; 140 if (unlikely(strncmp(model, "ET2012", 6) == 0)) 141 et2012_quirks(); 142 143 return 1; 144 } 145 146 static struct dmi_system_id asus_quirks[] = { 147 { 148 .callback = dmi_matched, 149 .ident = "ASUSTeK Computer INC. 1000H", 150 .matches = { 151 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."), 152 DMI_MATCH(DMI_PRODUCT_NAME, "1000H"), 153 }, 154 .driver_data = &quirk_asus_1000h, 155 }, 156 { 157 .callback = dmi_matched, 158 .ident = "ASUSTeK Computer INC. ET2012E/I", 159 .matches = { 160 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."), 161 DMI_MATCH(DMI_PRODUCT_NAME, "ET2012"), 162 }, 163 .driver_data = &quirk_asus_unknown, 164 }, 165 { 166 .callback = dmi_matched, 167 .ident = "ASUSTeK Computer INC. X101CH", 168 .matches = { 169 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), 170 DMI_MATCH(DMI_PRODUCT_NAME, "X101CH"), 171 }, 172 .driver_data = &quirk_asus_x101ch, 173 }, 174 { 175 .callback = dmi_matched, 176 .ident = "ASUSTeK Computer INC. 1015CX", 177 .matches = { 178 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), 179 DMI_MATCH(DMI_PRODUCT_NAME, "1015CX"), 180 }, 181 .driver_data = &quirk_asus_x101ch, 182 }, 183 {}, 184 }; 185 186 static void eeepc_wmi_key_filter(struct asus_wmi_driver *asus_wmi, int *code, 187 unsigned int *value, bool *autorelease) 188 { 189 switch (*code) { 190 case HOME_PRESS: 191 *value = 1; 192 *autorelease = 0; 193 break; 194 case HOME_HOLD: 195 *code = ASUS_WMI_KEY_IGNORE; 196 break; 197 case HOME_RELEASE: 198 *code = HOME_PRESS; 199 *value = 0; 200 *autorelease = 0; 201 break; 202 } 203 } 204 205 static acpi_status eeepc_wmi_parse_device(acpi_handle handle, u32 level, 206 void *context, void **retval) 207 { 208 pr_warn("Found legacy ATKD device (%s)\n", EEEPC_ACPI_HID); 209 *(bool *)context = true; 210 return AE_CTRL_TERMINATE; 211 } 212 213 static int eeepc_wmi_check_atkd(void) 214 { 215 acpi_status status; 216 bool found = false; 217 218 status = acpi_get_devices(EEEPC_ACPI_HID, eeepc_wmi_parse_device, 219 &found, NULL); 220 221 if (ACPI_FAILURE(status) || !found) 222 return 0; 223 return -1; 224 } 225 226 static int eeepc_wmi_probe(struct platform_device *pdev) 227 { 228 if (eeepc_wmi_check_atkd()) { 229 pr_warn("WMI device present, but legacy ATKD device is also " 230 "present and enabled\n"); 231 pr_warn("You probably booted with acpi_osi=\"Linux\" or " 232 "acpi_osi=\"!Windows 2009\"\n"); 233 pr_warn("Can't load eeepc-wmi, use default acpi_osi " 234 "(preferred) or eeepc-laptop\n"); 235 return -EBUSY; 236 } 237 return 0; 238 } 239 240 static void eeepc_wmi_quirks(struct asus_wmi_driver *driver) 241 { 242 quirks = &quirk_asus_unknown; 243 quirks->hotplug_wireless = hotplug_wireless; 244 245 dmi_check_system(asus_quirks); 246 247 driver->quirks = quirks; 248 driver->quirks->wapf = -1; 249 driver->panel_power = FB_BLANK_UNBLANK; 250 } 251 252 static struct asus_wmi_driver asus_wmi_driver = { 253 .name = EEEPC_WMI_FILE, 254 .owner = THIS_MODULE, 255 .event_guid = EEEPC_WMI_EVENT_GUID, 256 .keymap = eeepc_wmi_keymap, 257 .input_name = "Eee PC WMI hotkeys", 258 .input_phys = EEEPC_WMI_FILE "/input0", 259 .key_filter = eeepc_wmi_key_filter, 260 .probe = eeepc_wmi_probe, 261 .detect_quirks = eeepc_wmi_quirks, 262 }; 263 264 265 static int __init eeepc_wmi_init(void) 266 { 267 return asus_wmi_register_driver(&asus_wmi_driver); 268 } 269 270 static void __exit eeepc_wmi_exit(void) 271 { 272 asus_wmi_unregister_driver(&asus_wmi_driver); 273 } 274 275 module_init(eeepc_wmi_init); 276 module_exit(eeepc_wmi_exit); 277