| // 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"); |