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Some Asus notebooks like the Asus E202SA and the Asus X555UB have a
separate ACPI device for notifications from the airplane mode hotkey.
This device is called "Wireless Radio Control" in Asus websites and ASHS
in the DSDT, and its ACPI _HID is ATK4002 in the two models mentioned
above.
For these models, when the airplane mode hotkey (Fn+F2) is pressed, a
query 0x0B is started in the Embedded Controller, and all this query does
is a notify ASHS with the value 0x88 (for acpi_osi >= "Windows 2012"):
Scope (_SB.PCI0.SBRG.EC0)
{
(...)
Method (_Q0B, 0, NotSerialized) // _Qxx: EC Query
{
If ((MSOS () >= OSW8))
{
Notify (ASHS, 0x88) // Device-Specific
}
Else
{
(...)
}
}
}
Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
84 lines
2.1 KiB
C
84 lines
2.1 KiB
C
/*
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* Asus Wireless Radio Control Driver
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*
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* Copyright (C) 2015-2016 Endless Mobile, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/acpi.h>
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#include <linux/input.h>
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#include <linux/pci_ids.h>
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struct asus_wireless_data {
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struct input_dev *idev;
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};
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static void asus_wireless_notify(struct acpi_device *adev, u32 event)
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{
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struct asus_wireless_data *data = acpi_driver_data(adev);
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dev_dbg(&adev->dev, "event=%#x\n", event);
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if (event != 0x88) {
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dev_notice(&adev->dev, "Unknown ASHS event: %#x\n", event);
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return;
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}
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input_report_key(data->idev, KEY_RFKILL, 1);
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input_report_key(data->idev, KEY_RFKILL, 0);
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input_sync(data->idev);
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}
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static int asus_wireless_add(struct acpi_device *adev)
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{
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struct asus_wireless_data *data;
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data = devm_kzalloc(&adev->dev, sizeof(*data), GFP_KERNEL);
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if (!data)
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return -ENOMEM;
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adev->driver_data = data;
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data->idev = devm_input_allocate_device(&adev->dev);
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if (!data->idev)
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return -ENOMEM;
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data->idev->name = "Asus Wireless Radio Control";
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data->idev->phys = "asus-wireless/input0";
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data->idev->id.bustype = BUS_HOST;
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data->idev->id.vendor = PCI_VENDOR_ID_ASUSTEK;
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set_bit(EV_KEY, data->idev->evbit);
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set_bit(KEY_RFKILL, data->idev->keybit);
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return input_register_device(data->idev);
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}
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static int asus_wireless_remove(struct acpi_device *adev)
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{
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return 0;
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}
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static const struct acpi_device_id device_ids[] = {
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{"ATK4002", 0},
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{"", 0},
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};
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MODULE_DEVICE_TABLE(acpi, device_ids);
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static struct acpi_driver asus_wireless_driver = {
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.name = "Asus Wireless Radio Control Driver",
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.class = "hotkey",
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.ids = device_ids,
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.ops = {
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.add = asus_wireless_add,
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.remove = asus_wireless_remove,
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.notify = asus_wireless_notify,
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},
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};
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module_acpi_driver(asus_wireless_driver);
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MODULE_DESCRIPTION("Asus Wireless Radio Control Driver");
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MODULE_AUTHOR("João Paulo Rechi Vita <jprvita@gmail.com>");
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MODULE_LICENSE("GPL");
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