drivers/platform/x86/acer-wireless.c

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