提交 f6a6bbae 编写于 作者: J João Paulo Rechi Vita 提交者: Darren Hart

platform/x86: Add Asus Wireless Radio Control driver

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: NJoão Paulo Rechi Vita <jprvita@endlessm.com>
Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: NDarren Hart <dvhart@linux.intel.com>
上级 f5b3f665
......@@ -1791,6 +1791,12 @@ S: Maintained
F: drivers/platform/x86/asus*.c
F: drivers/platform/x86/eeepc*.c
ASUS WIRELESS RADIO CONTROL DRIVER
M: João Paulo Rechi Vita <jprvita@gmail.com>
L: platform-driver-x86@vger.kernel.org
S: Maintained
F: drivers/platform/x86/asus-wireless.c
ASYNCHRONOUS TRANSFERS/TRANSFORMS (IOAT) API
R: Dan Williams <dan.j.williams@intel.com>
W: http://sourceforge.net/projects/xscaleiop
......
......@@ -587,6 +587,20 @@ config EEEPC_WMI
If you have an ACPI-WMI compatible Eee PC laptop (>= 1000), say Y or M
here.
config ASUS_WIRELESS
tristate "Asus Wireless Radio Control Driver"
depends on ACPI
depends on INPUT
---help---
The Asus Wireless Radio Control handles the airplane mode hotkey
present on some Asus laptops.
Say Y or M here if you have an ASUS notebook with an airplane mode
hotkey.
If you choose to compile this driver as a module the module will be
called asus-wireless.
config ACPI_WMI
tristate "WMI"
depends on ACPI
......
......@@ -5,6 +5,7 @@
obj-$(CONFIG_ASUS_LAPTOP) += asus-laptop.o
obj-$(CONFIG_ASUS_WMI) += asus-wmi.o
obj-$(CONFIG_ASUS_NB_WMI) += asus-nb-wmi.o
obj-$(CONFIG_ASUS_WIRELESS) += asus-wireless.o
obj-$(CONFIG_EEEPC_LAPTOP) += eeepc-laptop.o
obj-$(CONFIG_EEEPC_WMI) += eeepc-wmi.o
obj-$(CONFIG_MSI_LAPTOP) += msi-laptop.o
......
/*
* Asus Wireless Radio Control Driver
*
* Copyright (C) 2015-2016 Endless Mobile, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/acpi.h>
#include <linux/input.h>
#include <linux/pci_ids.h>
struct asus_wireless_data {
struct input_dev *idev;
};
static void asus_wireless_notify(struct acpi_device *adev, u32 event)
{
struct asus_wireless_data *data = acpi_driver_data(adev);
dev_dbg(&adev->dev, "event=%#x\n", event);
if (event != 0x88) {
dev_notice(&adev->dev, "Unknown ASHS event: %#x\n", event);
return;
}
input_report_key(data->idev, KEY_RFKILL, 1);
input_report_key(data->idev, KEY_RFKILL, 0);
input_sync(data->idev);
}
static int asus_wireless_add(struct acpi_device *adev)
{
struct asus_wireless_data *data;
data = devm_kzalloc(&adev->dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
adev->driver_data = data;
data->idev = devm_input_allocate_device(&adev->dev);
if (!data->idev)
return -ENOMEM;
data->idev->name = "Asus Wireless Radio Control";
data->idev->phys = "asus-wireless/input0";
data->idev->id.bustype = BUS_HOST;
data->idev->id.vendor = PCI_VENDOR_ID_ASUSTEK;
set_bit(EV_KEY, data->idev->evbit);
set_bit(KEY_RFKILL, data->idev->keybit);
return input_register_device(data->idev);
}
static int asus_wireless_remove(struct acpi_device *adev)
{
return 0;
}
static const struct acpi_device_id device_ids[] = {
{"ATK4002", 0},
{"", 0},
};
MODULE_DEVICE_TABLE(acpi, device_ids);
static struct acpi_driver asus_wireless_driver = {
.name = "Asus Wireless Radio Control Driver",
.class = "hotkey",
.ids = device_ids,
.ops = {
.add = asus_wireless_add,
.remove = asus_wireless_remove,
.notify = asus_wireless_notify,
},
};
module_acpi_driver(asus_wireless_driver);
MODULE_DESCRIPTION("Asus Wireless Radio Control Driver");
MODULE_AUTHOR("João Paulo Rechi Vita <jprvita@gmail.com>");
MODULE_LICENSE("GPL");
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