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; 111 112 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 } 127 128 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 }; 162 163 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 } 181 182 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 } 189 190 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 } 202 203 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 } 216 217 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 }; 240 241 242 static int __init eeepc_wmi_init(void) 243 { 244 return asus_wmi_register_driver(&asus_wmi_driver); 245 } 246 247 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