1/*
 2 * Asus Wireless Radio Control Driver
 3 *
 4 * Copyright (C) 2015-2016 Endless Mobile, Inc.
 5 *
 6 * This program is free software; you can redistribute it and/or modify
 7 * it under the terms of the GNU General Public License version 2 as
 8 * published by the Free Software Foundation.
 9 */
10
11#include <linux/kernel.h>
12#include <linux/module.h>
13#include <linux/init.h>
14#include <linux/types.h>
15#include <linux/acpi.h>
16#include <linux/input.h>
17#include <linux/pci_ids.h>
18
19struct asus_wireless_data {
20	struct input_dev *idev;
21};
22
23static void asus_wireless_notify(struct acpi_device *adev, u32 event)
24{
25	struct asus_wireless_data *data = acpi_driver_data(adev);
26
27	dev_dbg(&adev->dev, "event=%#x\n", event);
28	if (event != 0x88) {
29		dev_notice(&adev->dev, "Unknown ASHS event: %#x\n", event);
30		return;
31	}
32	input_report_key(data->idev, KEY_RFKILL, 1);
33	input_report_key(data->idev, KEY_RFKILL, 0);
34	input_sync(data->idev);
35}
36
37static int asus_wireless_add(struct acpi_device *adev)
38{
39	struct asus_wireless_data *data;
40
41	data = devm_kzalloc(&adev->dev, sizeof(*data), GFP_KERNEL);
42	if (!data)
43		return -ENOMEM;
44	adev->driver_data = data;
45
46	data->idev = devm_input_allocate_device(&adev->dev);
47	if (!data->idev)
48		return -ENOMEM;
49	data->idev->name = "Asus Wireless Radio Control";
50	data->idev->phys = "asus-wireless/input0";
51	data->idev->id.bustype = BUS_HOST;
52	data->idev->id.vendor = PCI_VENDOR_ID_ASUSTEK;
53	set_bit(EV_KEY, data->idev->evbit);
54	set_bit(KEY_RFKILL, data->idev->keybit);
55	return input_register_device(data->idev);
56}
57
58static int asus_wireless_remove(struct acpi_device *adev)
59{
60	return 0;
61}
62
63static const struct acpi_device_id device_ids[] = {
64	{"ATK4001", 0},
65	{"ATK4002", 0},
66	{"", 0},
67};
68MODULE_DEVICE_TABLE(acpi, device_ids);
69
70static struct acpi_driver asus_wireless_driver = {
71	.name = "Asus Wireless Radio Control Driver",
72	.class = "hotkey",
73	.ids = device_ids,
74	.ops = {
75		.add = asus_wireless_add,
76		.remove = asus_wireless_remove,
77		.notify = asus_wireless_notify,
78	},
79};
80module_acpi_driver(asus_wireless_driver);
81
82MODULE_DESCRIPTION("Asus Wireless Radio Control Driver");
83MODULE_AUTHOR("João Paulo Rechi Vita <jprvita@gmail.com>");
84MODULE_LICENSE("GPL");