// SPDX-License-Identifier: GPL-2.0-only /* * HID driver for some ITE "special" devices * Copyright (c) 2017 Hans de Goede <hdegoede@redhat.com> */ #include <linux/device.h> #include <linux/input.h> #include <linux/hid.h> #include <linux/module.h> #include "hid-ids.h" static int ite_event(struct hid_device *hdev, struct hid_field *field, struct hid_usage *usage, __s32 value) { struct input_dev *input; if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput) return 0; input = field->hidinput->input; /* * The ITE8595 always reports 0 as value for the rfkill button. Luckily * it is the only button in its report, and it sends a report on * release only, so receiving a report means the button was pressed. */ if (usage->hid == HID_GD_RFKILL_BTN) { input_event(input, EV_KEY, KEY_RFKILL, 1); input_sync(input); input_event(input, EV_KEY, KEY_RFKILL, 0); input_sync(input); return 1; } return 0; } static const struct hid_device_id ite_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_ITE, USB_DEVICE_ID_ITE8595) }, { HID_USB_DEVICE(USB_VENDOR_ID_258A, USB_DEVICE_ID_258A_6A88) }, /* ITE8595 USB kbd ctlr, with Synaptics touchpad connected to it. */ { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_ACER_SWITCH5_012) }, { } }; MODULE_DEVICE_TABLE(hid, ite_devices); static struct hid_driver ite_driver = { .name = "itetech", .id_table = ite_devices, .event = ite_event, }; module_hid_driver(ite_driver); MODULE_LICENSE("GPL");