platform/x86/acer-wireless.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * Acer Wireless Radio Control Driver
0004  *
0005  * Copyright (C) 2017 Endless Mobile, Inc.
0006  */
0007
0008 #include <linux/acpi.h>
0009 #include <linux/input.h>
0010 #include <linux/kernel.h>
0011 #include <linux/module.h>
0012 #include <linux/pci_ids.h>
0013 #include <linux/types.h>
0014
0015 static const struct acpi_device_id acer_wireless_acpi_ids[] = {
0016     {"10251229", 0},
0017     {"", 0},
0018 };
0019 MODULE_DEVICE_TABLE(acpi, acer_wireless_acpi_ids);
0020
0021 static void acer_wireless_notify(struct acpi_device *adev, u32 event)
0022 {
0023     struct input_dev *idev = acpi_driver_data(adev);
0024
0025     dev_dbg(&adev->dev, "event=%#x\n", event);
0026     if (event != 0x80) {
0027         dev_notice(&adev->dev, "Unknown SMKB event: %#x\n", event);
0028         return;
0029     }
0030     input_report_key(idev, KEY_RFKILL, 1);
0031     input_sync(idev);
0032     input_report_key(idev, KEY_RFKILL, 0);
0033     input_sync(idev);
0034 }
0035
0036 static int acer_wireless_add(struct acpi_device *adev)
0037 {
0038     struct input_dev *idev;
0039
0040     idev = devm_input_allocate_device(&adev->dev);
0041     if (!idev)
0042         return -ENOMEM;
0043
0044     adev->driver_data = idev;
0045     idev->name = "Acer Wireless Radio Control";
0046     idev->phys = "acer-wireless/input0";
0047     idev->id.bustype = BUS_HOST;
0048     idev->id.vendor = PCI_VENDOR_ID_AI;
0049     idev->id.product = 0x1229;
0050     set_bit(EV_KEY, idev->evbit);
0051     set_bit(KEY_RFKILL, idev->keybit);
0052
0053     return input_register_device(idev);
0054 }
0055
0056 static struct acpi_driver acer_wireless_driver = {
0057     .name = "Acer Wireless Radio Control Driver",
0058     .class = "hotkey",
0059     .ids = acer_wireless_acpi_ids,
0060     .ops = {
0061         .add = acer_wireless_add,
0062         .notify = acer_wireless_notify,
0063     },
0064 };
0065 module_acpi_driver(acer_wireless_driver);
0066
0067 MODULE_DESCRIPTION("Acer Wireless Radio Control Driver");
0068 MODULE_AUTHOR("Chris Chiu <chiu@gmail.com>");
0069 MODULE_LICENSE("GPL v2");