2 * Airplane mode button for HP & Xiaomi laptops
4 * Copyright (C) 2014-2017 Alex Hung <alex.hung@canonical.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21 #include <linux/kernel.h>
22 #include <linux/module.h>
23 #include <linux/init.h>
24 #include <linux/input.h>
25 #include <linux/platform_device.h>
26 #include <linux/acpi.h>
27 #include <acpi/acpi_bus.h>
29 MODULE_LICENSE("GPL");
30 MODULE_AUTHOR("Alex Hung");
31 MODULE_ALIAS("acpi*:HPQ6001:*");
32 MODULE_ALIAS("acpi*:WSTADEF:*");
33 MODULE_ALIAS("acpi*:AMDI0051:*");
35 static struct input_dev *hpwl_input_dev;
37 static const struct acpi_device_id hpwl_ids[] = {
44 static int hp_wireless_input_setup(void)
48 hpwl_input_dev = input_allocate_device();
52 hpwl_input_dev->name = "HP Wireless hotkeys";
53 hpwl_input_dev->phys = "hpq6001/input0";
54 hpwl_input_dev->id.bustype = BUS_HOST;
55 hpwl_input_dev->evbit[0] = BIT(EV_KEY);
56 set_bit(KEY_RFKILL, hpwl_input_dev->keybit);
58 err = input_register_device(hpwl_input_dev);
65 input_free_device(hpwl_input_dev);
69 static void hp_wireless_input_destroy(void)
71 input_unregister_device(hpwl_input_dev);
74 static void hpwl_notify(struct acpi_device *acpi_dev, u32 event)
77 pr_info("Received unknown event (0x%x)\n", event);
81 input_report_key(hpwl_input_dev, KEY_RFKILL, 1);
82 input_sync(hpwl_input_dev);
83 input_report_key(hpwl_input_dev, KEY_RFKILL, 0);
84 input_sync(hpwl_input_dev);
87 static int hpwl_add(struct acpi_device *device)
91 err = hp_wireless_input_setup();
93 pr_err("Failed to setup hp wireless hotkeys\n");
98 static int hpwl_remove(struct acpi_device *device)
100 hp_wireless_input_destroy();
104 static struct acpi_driver hpwl_driver = {
105 .name = "hp-wireless",
106 .owner = THIS_MODULE,
110 .remove = hpwl_remove,
111 .notify = hpwl_notify,
115 module_acpi_driver(hpwl_driver);