// SPDX-License-Identifier: GPL-2.0-only
/*
 * Acer Wireless Radio Control Driver
 *
 * Copyright (C) 2017 Endless Mobile, Inc.
 */

#include <linux/acpi.h>
#include <linux/input.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci_ids.h>
#include <linux/types.h>

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_sync(idev);
        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 <chiu@gmail.com>");
MODULE_LICENSE("GPL v2");