From 75971febd9b14a517c14e83fccf6a961b4c759f1 Mon Sep 17 00:00:00 2001 From: Chris Chiu Date: Tue, 21 Nov 2017 13:30:44 +0800 Subject: [PATCH] platform/x86: Add Acer Wireless Radio Control driver MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Reviewed-by: João Paulo Rechi Vita Signed-off-by: Andy Shevchenko --- drivers/platform/x86/Kconfig | 14 ++++++ drivers/platform/x86/Makefile | 1 + drivers/platform/x86/acer-wireless.c | 71 ++++++++++++++++++++++++++++ 3 files changed, 86 insertions(+) create mode 100644 drivers/platform/x86/acer-wireless.c diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index 2c745e8ccad6..9d2a6d642f33 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -36,6 +36,20 @@ config ACER_WMI If you have an ACPI-WMI compatible Acer/ Wistron laptop, say Y or M here. +config ACER_WIRELESS + tristate "Acer Wireless Radio Control Driver" + depends on ACPI + depends on INPUT + ---help--- + The Acer Wireless Radio Control handles the airplane mode hotkey + present on new Acer laptops. + + Say Y or M here if you have an Acer notebook with an airplane mode + hotkey. + + If you choose to compile this driver as a module the module will be + called acer-wireless. + config ACERHDF tristate "Acer Aspire One temperature and fan driver" depends on ACPI && THERMAL diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile index c32b34a72467..2996536bf54e 100644 --- a/drivers/platform/x86/Makefile +++ b/drivers/platform/x86/Makefile @@ -23,6 +23,7 @@ obj-$(CONFIG_DELL_WMI_LED) += dell-wmi-led.o obj-$(CONFIG_DELL_SMO8800) += dell-smo8800.o obj-$(CONFIG_DELL_RBTN) += dell-rbtn.o obj-$(CONFIG_ACER_WMI) += acer-wmi.o +obj-$(CONFIG_ACER_WIRELESS) += acer-wireless.o obj-$(CONFIG_ACERHDF) += acerhdf.o obj-$(CONFIG_HP_ACCEL) += hp_accel.o obj-$(CONFIG_HP_WIRELESS) += hp-wireless.o diff --git a/drivers/platform/x86/acer-wireless.c b/drivers/platform/x86/acer-wireless.c new file mode 100644 index 000000000000..858037987b33 --- /dev/null +++ b/drivers/platform/x86/acer-wireless.c @@ -0,0 +1,71 @@ +/* + * Acer Wireless Radio Control Driver + * + * Copyright (C) 2017 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 +#include +#include +#include +#include +#include + +static const struct acpi_device_id acer_wireless_acpi_ids[] = { + {"10251229", 0}, + {"", 0}, +}; +MODULE_DEVICE_TABLE(acpi, acer_wireless_acpi_ids); + +static void acer_wireless_notify(struct acpi_device *adev, u32 event) +{ + struct input_dev *idev = acpi_driver_data(adev); + + dev_dbg(&adev->dev, "event=%#x\n", event); + if (event != 0x80) { + dev_notice(&adev->dev, "Unknown SMKB event: %#x\n", event); + return; + } + input_report_key(idev, KEY_RFKILL, 1); + input_report_key(idev, KEY_RFKILL, 0); + input_sync(idev); +} + +static int acer_wireless_add(struct acpi_device *adev) +{ + struct input_dev *idev; + + idev = devm_input_allocate_device(&adev->dev); + if (!idev) + return -ENOMEM; + + adev->driver_data = idev; + idev->name = "Acer Wireless Radio Control"; + idev->phys = "acer-wireless/input0"; + idev->id.bustype = BUS_HOST; + idev->id.vendor = PCI_VENDOR_ID_AI; + idev->id.product = 0x1229; + set_bit(EV_KEY, idev->evbit); + set_bit(KEY_RFKILL, idev->keybit); + + return input_register_device(idev); +} + +static struct acpi_driver acer_wireless_driver = { + .name = "Acer Wireless Radio Control Driver", + .class = "hotkey", + .ids = acer_wireless_acpi_ids, + .ops = { + .add = acer_wireless_add, + .notify = acer_wireless_notify, + }, +}; +module_acpi_driver(acer_wireless_driver); + +MODULE_DESCRIPTION("Acer Wireless Radio Control Driver"); +MODULE_AUTHOR("Chris Chiu "); +MODULE_LICENSE("GPL v2"); -- 2.25.1