1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Acer Wireless Radio Control Driver
4 *
5 * Copyright (C) 2017 Endless Mobile, Inc.
6 */
7
8#include <linux/acpi.h>
9#include <linux/input.h>
10#include <linux/kernel.h>
11#include <linux/module.h>
12#include <linux/pci_ids.h>
13#include <linux/types.h>
14
15static const struct acpi_device_id acer_wireless_acpi_ids[] = {
16	{"10251229", 0},
17	{"", 0},
18};
19MODULE_DEVICE_TABLE(acpi, acer_wireless_acpi_ids);
20
21static void acer_wireless_notify(struct acpi_device *adev, u32 event)
22{
23	struct input_dev *idev = acpi_driver_data(adev);
24
25	dev_dbg(&adev->dev, "event=%#x\n", event);
26	if (event != 0x80) {
27		dev_notice(&adev->dev, "Unknown SMKB event: %#x\n", event);
28		return;
29	}
30	input_report_key(idev, KEY_RFKILL, 1);
31	input_sync(idev);
32	input_report_key(idev, KEY_RFKILL, 0);
33	input_sync(idev);
34}
35
36static int acer_wireless_add(struct acpi_device *adev)
37{
38	struct input_dev *idev;
39
40	idev = devm_input_allocate_device(&adev->dev);
41	if (!idev)
42		return -ENOMEM;
43
44	adev->driver_data = idev;
45	idev->name = "Acer Wireless Radio Control";
46	idev->phys = "acer-wireless/input0";
47	idev->id.bustype = BUS_HOST;
48	idev->id.vendor = PCI_VENDOR_ID_AI;
49	idev->id.product = 0x1229;
50	set_bit(EV_KEY, idev->evbit);
51	set_bit(KEY_RFKILL, idev->keybit);
52
53	return input_register_device(idev);
54}
55
56static struct acpi_driver acer_wireless_driver = {
57	.name = "Acer Wireless Radio Control Driver",
58	.class = "hotkey",
59	.ids = acer_wireless_acpi_ids,
60	.ops = {
61		.add = acer_wireless_add,
62		.notify = acer_wireless_notify,
63	},
64};
65module_acpi_driver(acer_wireless_driver);
66
67MODULE_DESCRIPTION("Acer Wireless Radio Control Driver");
68MODULE_AUTHOR("Chris Chiu <chiu@gmail.com>");
69MODULE_LICENSE("GPL v2");
70