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 <acpi/acpi_bus.h> 36 37 #include "asus-wmi.h" 38 39 #define EEEPC_WMI_FILE "eeepc-wmi" 40 41 MODULE_AUTHOR("Corentin Chary <corentincj@iksaif.net>"); 42 MODULE_DESCRIPTION("Eee PC WMI Hotkey Driver"); 43 MODULE_LICENSE("GPL"); 44 45 #define EEEPC_ACPI_HID "ASUS010" /* old _HID used in eeepc-laptop */ 46 47 #define EEEPC_WMI_EVENT_GUID "ABBC0F72-8EA1-11D1-00A0-C90629100000" 48 49 MODULE_ALIAS("wmi:"EEEPC_WMI_EVENT_GUID); 50 51 static bool hotplug_wireless; 52 53 module_param(hotplug_wireless, bool, 0444); 54 MODULE_PARM_DESC(hotplug_wireless, 55 "Enable hotplug for wireless device. " 56 "If your laptop needs that, please report to " 57 "acpi4asus-user@lists.sourceforge.net."); 58 59 /* Values for T101MT "Home" key */ 60 #define HOME_PRESS 0xe4 61 #define HOME_HOLD 0xea 62 #define HOME_RELEASE 0xe5 63 64 static const struct key_entry eeepc_wmi_keymap[] = { 65 /* Sleep already handled via generic ACPI code */ 66 { KE_KEY, 0x30, { KEY_VOLUMEUP } }, 67 { KE_KEY, 0x31, { KEY_VOLUMEDOWN } }, 68 { KE_KEY, 0x32, { KEY_MUTE } }, 69 { KE_KEY, 0x5c, { KEY_F15 } }, /* Power Gear key */ 70 { KE_KEY, 0x5d, { KEY_WLAN } }, 71 { KE_KEY, 0x6b, { KEY_TOUCHPAD_TOGGLE } }, /* Toggle Touchpad */ 72 { KE_KEY, 0x82, { KEY_CAMERA } }, 73 { KE_KEY, 0x83, { KEY_CAMERA_ZOOMIN } }, 74 { KE_KEY, 0x88, { KEY_WLAN } }, 75 { KE_KEY, 0xbd, { KEY_CAMERA } }, 76 { KE_KEY, 0xcc, { KEY_SWITCHVIDEOMODE } }, 77 { KE_KEY, 0xe0, { KEY_PROG1 } }, /* Task Manager */ 78 { KE_KEY, 0xe1, { KEY_F14 } }, /* Change Resolution */ 79 { KE_KEY, HOME_PRESS, { KEY_CONFIG } }, /* Home/Express gate key */ 80 { KE_KEY, 0xe8, { KEY_SCREENLOCK } }, 81 { KE_KEY, 0xe9, { KEY_BRIGHTNESS_ZERO } }, 82 { KE_KEY, 0xeb, { KEY_CAMERA_ZOOMOUT } }, 83 { KE_KEY, 0xec, { KEY_CAMERA_UP } }, 84 { KE_KEY, 0xed, { KEY_CAMERA_DOWN } }, 85 { KE_KEY, 0xee, { KEY_CAMERA_LEFT } }, 86 { KE_KEY, 0xef, { KEY_CAMERA_RIGHT } }, 87 { KE_END, 0}, 88 }; 89 90 static void eeepc_wmi_key_filter(struct asus_wmi_driver *asus_wmi, int *code, 91 unsigned int *value, bool *autorelease) 92 { 93 switch (*code) { 94 case HOME_PRESS: 95 *value = 1; 96 *autorelease = 0; 97 break; 98 case HOME_HOLD: 99 *code = ASUS_WMI_KEY_IGNORE; 100 break; 101 case HOME_RELEASE: 102 *code = HOME_PRESS; 103 *value = 0; 104 *autorelease = 0; 105 break; 106 } 107 } 108 109 static acpi_status eeepc_wmi_parse_device(acpi_handle handle, u32 level, 110 void *context, void **retval) 111 { 112 pr_warn("Found legacy ATKD device (%s)\n", EEEPC_ACPI_HID); 113 *(bool *)context = true; 114 return AE_CTRL_TERMINATE; 115 } 116 117 static int eeepc_wmi_check_atkd(void) 118 { 119 acpi_status status; 120 bool found = false; 121 122 status = acpi_get_devices(EEEPC_ACPI_HID, eeepc_wmi_parse_device, 123 &found, NULL); 124 125 if (ACPI_FAILURE(status) || !found) 126 return 0; 127 return -1; 128 } 129 130 static int eeepc_wmi_probe(struct platform_device *pdev) 131 { 132 if (eeepc_wmi_check_atkd()) { 133 pr_warn("WMI device present, but legacy ATKD device is also " 134 "present and enabled\n"); 135 pr_warn("You probably booted with acpi_osi=\"Linux\" or " 136 "acpi_osi=\"!Windows 2009\"\n"); 137 pr_warn("Can't load eeepc-wmi, use default acpi_osi " 138 "(preferred) or eeepc-laptop\n"); 139 return -EBUSY; 140 } 141 return 0; 142 } 143 144 static void eeepc_dmi_check(struct asus_wmi_driver *driver) 145 { 146 const char *model; 147 148 model = dmi_get_system_info(DMI_PRODUCT_NAME); 149 if (!model) 150 return; 151 152 /* 153 * Whitelist for wlan hotplug 154 * 155 * Asus 1000H needs the current hotplug code to handle 156 * Fn+F2 correctly. We may add other Asus here later, but 157 * it seems that most of the laptops supported by asus-wmi 158 * don't need to be on this list 159 */ 160 if (strcmp(model, "1000H") == 0) { 161 driver->hotplug_wireless = true; 162 pr_info("wlan hotplug enabled\n"); 163 } 164 } 165 166 static void eeepc_wmi_quirks(struct asus_wmi_driver *driver) 167 { 168 driver->hotplug_wireless = hotplug_wireless; 169 eeepc_dmi_check(driver); 170 } 171 172 static struct asus_wmi_driver asus_wmi_driver = { 173 .name = EEEPC_WMI_FILE, 174 .owner = THIS_MODULE, 175 .event_guid = EEEPC_WMI_EVENT_GUID, 176 .keymap = eeepc_wmi_keymap, 177 .input_name = "Eee PC WMI hotkeys", 178 .input_phys = EEEPC_WMI_FILE "/input0", 179 .key_filter = eeepc_wmi_key_filter, 180 .probe = eeepc_wmi_probe, 181 .quirks = eeepc_wmi_quirks, 182 }; 183 184 185 static int __init eeepc_wmi_init(void) 186 { 187 return asus_wmi_register_driver(&asus_wmi_driver); 188 } 189 190 static void __exit eeepc_wmi_exit(void) 191 { 192 asus_wmi_unregister_driver(&asus_wmi_driver); 193 } 194 195 module_init(eeepc_wmi_init); 196 module_exit(eeepc_wmi_exit); 197