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 static const struct key_entry eeepc_wmi_keymap[] = { 60 /* Sleep already handled via generic ACPI code */ 61 { KE_KEY, 0x30, { KEY_VOLUMEUP } }, 62 { KE_KEY, 0x31, { KEY_VOLUMEDOWN } }, 63 { KE_KEY, 0x32, { KEY_MUTE } }, 64 { KE_KEY, 0x5c, { KEY_F15 } }, /* Power Gear key */ 65 { KE_KEY, 0x5d, { KEY_WLAN } }, 66 { KE_KEY, 0x6b, { KEY_F13 } }, /* Disable Touchpad */ 67 { KE_KEY, 0x82, { KEY_CAMERA } }, 68 { KE_KEY, 0x83, { KEY_CAMERA_ZOOMIN } }, 69 { KE_KEY, 0x88, { KEY_WLAN } }, 70 { KE_KEY, 0xcc, { KEY_SWITCHVIDEOMODE } }, 71 { KE_KEY, 0xe0, { KEY_PROG1 } }, /* Task Manager */ 72 { KE_KEY, 0xe1, { KEY_F14 } }, /* Change Resolution */ 73 { KE_KEY, 0xe9, { KEY_BRIGHTNESS_ZERO } }, 74 { KE_KEY, 0xeb, { KEY_CAMERA_ZOOMOUT } }, 75 { KE_KEY, 0xec, { KEY_CAMERA_UP } }, 76 { KE_KEY, 0xed, { KEY_CAMERA_DOWN } }, 77 { KE_KEY, 0xee, { KEY_CAMERA_LEFT } }, 78 { KE_KEY, 0xef, { KEY_CAMERA_RIGHT } }, 79 { KE_END, 0}, 80 }; 81 82 static acpi_status eeepc_wmi_parse_device(acpi_handle handle, u32 level, 83 void *context, void **retval) 84 { 85 pr_warning("Found legacy ATKD device (%s)", EEEPC_ACPI_HID); 86 *(bool *)context = true; 87 return AE_CTRL_TERMINATE; 88 } 89 90 static int eeepc_wmi_check_atkd(void) 91 { 92 acpi_status status; 93 bool found = false; 94 95 status = acpi_get_devices(EEEPC_ACPI_HID, eeepc_wmi_parse_device, 96 &found, NULL); 97 98 if (ACPI_FAILURE(status) || !found) 99 return 0; 100 return -1; 101 } 102 103 static int eeepc_wmi_probe(struct platform_device *pdev) 104 { 105 if (eeepc_wmi_check_atkd()) { 106 pr_warning("WMI device present, but legacy ATKD device is also " 107 "present and enabled."); 108 pr_warning("You probably booted with acpi_osi=\"Linux\" or " 109 "acpi_osi=\"!Windows 2009\""); 110 pr_warning("Can't load eeepc-wmi, use default acpi_osi " 111 "(preferred) or eeepc-laptop"); 112 return -EBUSY; 113 } 114 return 0; 115 } 116 117 static void eeepc_dmi_check(struct asus_wmi_driver *driver) 118 { 119 const char *model; 120 121 model = dmi_get_system_info(DMI_PRODUCT_NAME); 122 if (!model) 123 return; 124 125 /* 126 * Whitelist for wlan hotplug 127 * 128 * Asus 1000H needs the current hotplug code to handle 129 * Fn+F2 correctly. We may add other Asus here later, but 130 * it seems that most of the laptops supported by asus-wmi 131 * don't need to be on this list 132 */ 133 if (strcmp(model, "1000H") == 0) { 134 driver->hotplug_wireless = true; 135 pr_info("wlan hotplug enabled\n"); 136 } 137 } 138 139 static void eeepc_wmi_quirks(struct asus_wmi_driver *driver) 140 { 141 driver->hotplug_wireless = hotplug_wireless; 142 eeepc_dmi_check(driver); 143 } 144 145 static struct asus_wmi_driver asus_wmi_driver = { 146 .name = EEEPC_WMI_FILE, 147 .owner = THIS_MODULE, 148 .event_guid = EEEPC_WMI_EVENT_GUID, 149 .keymap = eeepc_wmi_keymap, 150 .input_name = "Eee PC WMI hotkeys", 151 .input_phys = EEEPC_WMI_FILE "/input0", 152 .probe = eeepc_wmi_probe, 153 .quirks = eeepc_wmi_quirks, 154 }; 155 156 157 static int __init eeepc_wmi_init(void) 158 { 159 return asus_wmi_register_driver(&asus_wmi_driver); 160 } 161 162 static void __exit eeepc_wmi_exit(void) 163 { 164 asus_wmi_unregister_driver(&asus_wmi_driver); 165 } 166 167 module_init(eeepc_wmi_init); 168 module_exit(eeepc_wmi_exit); 169