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/platform_device.h>
14 #include <linux/types.h>
15
16 static const struct acpi_device_id acer_wireless_acpi_ids[] = {
17 {"10251229", 0},
18 {"", 0},
19 };
20 MODULE_DEVICE_TABLE(acpi, acer_wireless_acpi_ids);
21
acer_wireless_notify(acpi_handle handle,u32 event,void * data)22 static void acer_wireless_notify(acpi_handle handle, u32 event, void *data)
23 {
24 struct device *dev = data;
25 struct input_dev *idev = dev_get_drvdata(dev);
26
27 dev_dbg(dev, "event=%#x\n", event);
28 if (event != 0x80) {
29 dev_notice(dev, "Unknown SMKB event: %#x\n", event);
30 return;
31 }
32 input_report_key(idev, KEY_RFKILL, 1);
33 input_sync(idev);
34 input_report_key(idev, KEY_RFKILL, 0);
35 input_sync(idev);
36 }
37
acer_wireless_probe(struct platform_device * pdev)38 static int acer_wireless_probe(struct platform_device *pdev)
39 {
40 struct acpi_device *adev;
41 struct input_dev *idev;
42 int ret;
43
44 adev = ACPI_COMPANION(&pdev->dev);
45 if (!adev)
46 return -ENODEV;
47
48 idev = devm_input_allocate_device(&pdev->dev);
49 if (!idev)
50 return -ENOMEM;
51
52 platform_set_drvdata(pdev, idev);
53 idev->name = "Acer Wireless Radio Control";
54 idev->phys = "acer-wireless/input0";
55 idev->id.bustype = BUS_HOST;
56 idev->id.vendor = PCI_VENDOR_ID_AI;
57 idev->id.product = 0x1229;
58 set_bit(EV_KEY, idev->evbit);
59 set_bit(KEY_RFKILL, idev->keybit);
60
61 ret = input_register_device(idev);
62 if (ret)
63 return ret;
64
65 return acpi_dev_install_notify_handler(adev, ACPI_DEVICE_NOTIFY,
66 acer_wireless_notify,
67 &pdev->dev);
68 }
69
acer_wireless_remove(struct platform_device * pdev)70 static void acer_wireless_remove(struct platform_device *pdev)
71 {
72 acpi_dev_remove_notify_handler(ACPI_COMPANION(&pdev->dev),
73 ACPI_DEVICE_NOTIFY,
74 acer_wireless_notify);
75 }
76
77 static struct platform_driver acer_wireless_driver = {
78 .probe = acer_wireless_probe,
79 .remove = acer_wireless_remove,
80 .driver = {
81 .name = "Acer Wireless Radio Control Driver",
82 .acpi_match_table = acer_wireless_acpi_ids,
83 },
84 };
85 module_platform_driver(acer_wireless_driver);
86
87 MODULE_DESCRIPTION("Acer Wireless Radio Control Driver");
88 MODULE_AUTHOR("Chris Chiu <chiu@gmail.com>");
89 MODULE_LICENSE("GPL v2");
90