1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Acer Wireless Radio Control Driver 4 * 5 * Copyright (C) 2017 Endless Mobile, Inc. 6 */ 7 8 #include <linux/acpi.h> 9 #include <linux/input.h> 10 #include <linux/kernel.h> 11 #include <linux/module.h> 12 #include <linux/pci_ids.h> 13 #include <linux/types.h> 14 15 static const struct acpi_device_id acer_wireless_acpi_ids[] = { 16 {"10251229", 0}, 17 {"", 0}, 18 }; 19 MODULE_DEVICE_TABLE(acpi, acer_wireless_acpi_ids); 20 21 static void acer_wireless_notify(struct acpi_device *adev, u32 event) 22 { 23 struct input_dev *idev = acpi_driver_data(adev); 24 25 dev_dbg(&adev->dev, "event=%#x\n", event); 26 if (event != 0x80) { 27 dev_notice(&adev->dev, "Unknown SMKB event: %#x\n", event); 28 return; 29 } 30 input_report_key(idev, KEY_RFKILL, 1); 31 input_report_key(idev, KEY_RFKILL, 0); 32 input_sync(idev); 33 } 34 35 static int acer_wireless_add(struct acpi_device *adev) 36 { 37 struct input_dev *idev; 38 39 idev = devm_input_allocate_device(&adev->dev); 40 if (!idev) 41 return -ENOMEM; 42 43 adev->driver_data = idev; 44 idev->name = "Acer Wireless Radio Control"; 45 idev->phys = "acer-wireless/input0"; 46 idev->id.bustype = BUS_HOST; 47 idev->id.vendor = PCI_VENDOR_ID_AI; 48 idev->id.product = 0x1229; 49 set_bit(EV_KEY, idev->evbit); 50 set_bit(KEY_RFKILL, idev->keybit); 51 52 return input_register_device(idev); 53 } 54 55 static struct acpi_driver acer_wireless_driver = { 56 .name = "Acer Wireless Radio Control Driver", 57 .class = "hotkey", 58 .ids = acer_wireless_acpi_ids, 59 .ops = { 60 .add = acer_wireless_add, 61 .notify = acer_wireless_notify, 62 }, 63 }; 64 module_acpi_driver(acer_wireless_driver); 65 66 MODULE_DESCRIPTION("Acer Wireless Radio Control Driver"); 67 MODULE_AUTHOR("Chris Chiu <chiu@gmail.com>"); 68 MODULE_LICENSE("GPL v2"); 69