drivers/platform/x86/asus-wireless.c

   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
  19 struct asus_wireless_data {
  20         struct input_dev *idev;
  21 };
  22
  23 static 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
  37 static 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
  58 static int asus_wireless_remove(struct acpi_device *adev)
  59 {
  60         return 0;
  61 }
  62
  63 static const struct acpi_device_id device_ids[] = {
  64         {"ATK4001", 0},
  65         {"ATK4002", 0},
  66         {"", 0},
  67 };
  68 MODULE_DEVICE_TABLE(acpi, device_ids);
  69
  70 static 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 };
  80 module_acpi_driver(asus_wireless_driver);
  81
  82 MODULE_DESCRIPTION("Asus Wireless Radio Control Driver");
  83 MODULE_AUTHOR("João Paulo Rechi Vita <jprvita@gmail.com>");
  84 MODULE_LICENSE("GPL");