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75971febd9
New Acer laptops in 2018 will have a separate ACPI device for
notifications from the airplane mode hotkey. The device name in
the DSDT is SMKB and its ACPI _HID is 10251229.
For these models, when the airplane mode hotkey (Fn+F3) pressed,
a query 0x02 is started in the Embedded Controller, and all this
query does is a notify SMKB with the value 0x80.
Scope (_SB.PCI0.LPCB.EC0)
{
(...)
Method (_Q02, 0, NotSerialized) // _Qxx: EC Query
{
HKEV (0x2, One)
Notify (SMKB, 0x80) // Status Change
}
}
Based on code from asus-wireless
Signed-off-by: Chris Chiu <chiu@endlessm.com>
Reviewed-by: João Paulo Rechi Vita <jprvita@endlessm.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
/*
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* Acer Wireless Radio Control Driver
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*
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* Copyright (C) 2017 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/acpi.h>
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#include <linux/input.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/pci_ids.h>
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#include <linux/types.h>
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static const struct acpi_device_id acer_wireless_acpi_ids[] = {
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{"10251229", 0},
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{"", 0},
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};
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MODULE_DEVICE_TABLE(acpi, acer_wireless_acpi_ids);
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static void acer_wireless_notify(struct acpi_device *adev, u32 event)
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{
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struct input_dev *idev = acpi_driver_data(adev);
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dev_dbg(&adev->dev, "event=%#x\n", event);
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if (event != 0x80) {
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dev_notice(&adev->dev, "Unknown SMKB event: %#x\n", event);
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return;
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}
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input_report_key(idev, KEY_RFKILL, 1);
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input_report_key(idev, KEY_RFKILL, 0);
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input_sync(idev);
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}
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static int acer_wireless_add(struct acpi_device *adev)
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{
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struct input_dev *idev;
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idev = devm_input_allocate_device(&adev->dev);
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if (!idev)
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return -ENOMEM;
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adev->driver_data = idev;
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idev->name = "Acer Wireless Radio Control";
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idev->phys = "acer-wireless/input0";
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idev->id.bustype = BUS_HOST;
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idev->id.vendor = PCI_VENDOR_ID_AI;
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idev->id.product = 0x1229;
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set_bit(EV_KEY, idev->evbit);
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set_bit(KEY_RFKILL, idev->keybit);
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return input_register_device(idev);
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}
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static struct acpi_driver acer_wireless_driver = {
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.name = "Acer Wireless Radio Control Driver",
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.class = "hotkey",
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.ids = acer_wireless_acpi_ids,
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.ops = {
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.add = acer_wireless_add,
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.notify = acer_wireless_notify,
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},
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};
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module_acpi_driver(acer_wireless_driver);
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MODULE_DESCRIPTION("Acer Wireless Radio Control Driver");
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MODULE_AUTHOR("Chris Chiu <chiu@gmail.com>");
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MODULE_LICENSE("GPL v2");
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