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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Eee PC WMI hotkey driver4 *5 * Copyright(C) 2010 Intel Corporation.6 * Copyright(C) 2010-2011 Corentin Chary <corentin.chary@gmail.com>7 *8 * Portions based on wistron_btns.c:9 * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>10 * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>11 * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>12 */13 14#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt15 16#include <linux/backlight.h>17#include <linux/kernel.h>18#include <linux/module.h>19#include <linux/init.h>20#include <linux/input.h>21#include <linux/input/sparse-keymap.h>22#include <linux/dmi.h>23#include <linux/acpi.h>24 25#include "asus-wmi.h"26 27#define EEEPC_WMI_FILE "eeepc-wmi"28 29MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>");30MODULE_DESCRIPTION("Eee PC WMI Hotkey Driver");31MODULE_LICENSE("GPL");32 33#define EEEPC_ACPI_HID "ASUS010" /* old _HID used in eeepc-laptop */34 35#define EEEPC_WMI_EVENT_GUID "ABBC0F72-8EA1-11D1-00A0-C90629100000"36 37MODULE_ALIAS("wmi:"EEEPC_WMI_EVENT_GUID);38 39static bool hotplug_wireless;40 41module_param(hotplug_wireless, bool, 0444);42MODULE_PARM_DESC(hotplug_wireless,43 "Enable hotplug for wireless device. "44 "If your laptop needs that, please report to "45 "acpi4asus-user@lists.sourceforge.net.");46 47/* Values for T101MT "Home" key */48#define HOME_PRESS 0xe449#define HOME_HOLD 0xea50#define HOME_RELEASE 0xe551 52static const struct key_entry eeepc_wmi_keymap[] = {53 { KE_KEY, ASUS_WMI_BRN_DOWN, { KEY_BRIGHTNESSDOWN } },54 { KE_KEY, ASUS_WMI_BRN_UP, { KEY_BRIGHTNESSUP } },55 /* Sleep already handled via generic ACPI code */56 { KE_KEY, 0x30, { KEY_VOLUMEUP } },57 { KE_KEY, 0x31, { KEY_VOLUMEDOWN } },58 { KE_KEY, 0x32, { KEY_MUTE } },59 { KE_KEY, 0x5c, { KEY_F15 } }, /* Power Gear key */60 { KE_KEY, 0x5d, { KEY_WLAN } },61 { KE_KEY, 0x6b, { KEY_TOUCHPAD_TOGGLE } }, /* Toggle Touchpad */62 { KE_KEY, 0x82, { KEY_CAMERA } },63 { KE_KEY, 0x83, { KEY_CAMERA_ZOOMIN } },64 { KE_KEY, 0x88, { KEY_WLAN } },65 { KE_KEY, 0xbd, { KEY_CAMERA } },66 { KE_KEY, 0xcc, { KEY_SWITCHVIDEOMODE } },67 { KE_KEY, 0xe0, { KEY_PROG1 } }, /* Task Manager */68 { KE_KEY, 0xe1, { KEY_F14 } }, /* Change Resolution */69 { KE_KEY, HOME_PRESS, { KEY_CONFIG } }, /* Home/Express gate key */70 { KE_KEY, 0xe8, { KEY_SCREENLOCK } },71 { KE_KEY, 0xe9, { KEY_DISPLAYTOGGLE } },72 { KE_KEY, 0xeb, { KEY_CAMERA_ZOOMOUT } },73 { KE_KEY, 0xec, { KEY_CAMERA_UP } },74 { KE_KEY, 0xed, { KEY_CAMERA_DOWN } },75 { KE_KEY, 0xee, { KEY_CAMERA_LEFT } },76 { KE_KEY, 0xef, { KEY_CAMERA_RIGHT } },77 { KE_KEY, 0xf3, { KEY_MENU } },78 { KE_KEY, 0xf5, { KEY_HOMEPAGE } },79 { KE_KEY, 0xf6, { KEY_ESC } },80 { KE_END, 0},81};82 83static struct quirk_entry quirk_asus_unknown = {84};85 86static struct quirk_entry quirk_asus_1000h = {87 .hotplug_wireless = true,88};89 90static struct quirk_entry quirk_asus_et2012_type1 = {91 .store_backlight_power = true,92};93 94static struct quirk_entry quirk_asus_et2012_type3 = {95 .scalar_panel_brightness = true,96 .store_backlight_power = true,97};98 99static struct quirk_entry *quirks;100 101static void et2012_quirks(void)102{103 const struct dmi_device *dev = NULL;104 char oemstring[30];105 106 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {107 if (sscanf(dev->name, "AEMS%24c", oemstring) == 1) {108 if (oemstring[18] == '1')109 quirks = &quirk_asus_et2012_type1;110 else if (oemstring[18] == '3')111 quirks = &quirk_asus_et2012_type3;112 break;113 }114 }115}116 117static int dmi_matched(const struct dmi_system_id *dmi)118{119 char *model;120 121 quirks = dmi->driver_data;122 123 model = (char *)dmi->matches[1].substr;124 if (unlikely(strncmp(model, "ET2012", 6) == 0))125 et2012_quirks();126 127 return 1;128}129 130static const struct dmi_system_id asus_quirks[] = {131 {132 .callback = dmi_matched,133 .ident = "ASUSTeK Computer INC. 1000H",134 .matches = {135 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."),136 DMI_MATCH(DMI_PRODUCT_NAME, "1000H"),137 },138 .driver_data = &quirk_asus_1000h,139 },140 {141 .callback = dmi_matched,142 .ident = "ASUSTeK Computer INC. ET2012E/I",143 .matches = {144 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."),145 DMI_MATCH(DMI_PRODUCT_NAME, "ET2012"),146 },147 .driver_data = &quirk_asus_unknown,148 },149 {}150};151 152static void eeepc_wmi_key_filter(struct asus_wmi_driver *asus_wmi, int *code,153 unsigned int *value, bool *autorelease)154{155 switch (*code) {156 case HOME_PRESS:157 *value = 1;158 *autorelease = 0;159 break;160 case HOME_HOLD:161 *code = ASUS_WMI_KEY_IGNORE;162 break;163 case HOME_RELEASE:164 *code = HOME_PRESS;165 *value = 0;166 *autorelease = 0;167 break;168 }169}170 171static int eeepc_wmi_probe(struct platform_device *pdev)172{173 if (acpi_dev_found(EEEPC_ACPI_HID)) {174 pr_warn("Found legacy ATKD device (%s)\n", EEEPC_ACPI_HID);175 pr_warn("WMI device present, but legacy ATKD device is also "176 "present and enabled\n");177 pr_warn("You probably booted with acpi_osi=\"Linux\" or "178 "acpi_osi=\"!Windows 2009\"\n");179 pr_warn("Can't load eeepc-wmi, use default acpi_osi "180 "(preferred) or eeepc-laptop\n");181 return -EBUSY;182 }183 return 0;184}185 186static void eeepc_wmi_quirks(struct asus_wmi_driver *driver)187{188 quirks = &quirk_asus_unknown;189 quirks->hotplug_wireless = hotplug_wireless;190 191 dmi_check_system(asus_quirks);192 193 driver->quirks = quirks;194 driver->quirks->wapf = -1;195 driver->panel_power = BACKLIGHT_POWER_ON;196}197 198static struct asus_wmi_driver asus_wmi_driver = {199 .name = EEEPC_WMI_FILE,200 .owner = THIS_MODULE,201 .event_guid = EEEPC_WMI_EVENT_GUID,202 .keymap = eeepc_wmi_keymap,203 .input_name = "Eee PC WMI hotkeys",204 .input_phys = EEEPC_WMI_FILE "/input0",205 .key_filter = eeepc_wmi_key_filter,206 .probe = eeepc_wmi_probe,207 .detect_quirks = eeepc_wmi_quirks,208};209 210 211static int __init eeepc_wmi_init(void)212{213 return asus_wmi_register_driver(&asus_wmi_driver);214}215 216static void __exit eeepc_wmi_exit(void)217{218 asus_wmi_unregister_driver(&asus_wmi_driver);219}220 221module_init(eeepc_wmi_init);222module_exit(eeepc_wmi_exit);223