1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * HID driver for some ITE "special" devices
 4 * Copyright (c) 2017 Hans de Goede <hdegoede@redhat.com>
 
 
 
 
 5 */
 6
 7#include <linux/device.h>
 8#include <linux/input.h>
 9#include <linux/hid.h>
10#include <linux/module.h>
11
12#include "hid-ids.h"
13
14static int ite_event(struct hid_device *hdev, struct hid_field *field,
15		     struct hid_usage *usage, __s32 value)
16{
17	struct input_dev *input;
18
19	if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput)
20		return 0;
21
22	input = field->hidinput->input;
23
24	/*
25	 * The ITE8595 always reports 0 as value for the rfkill button. Luckily
26	 * it is the only button in its report, and it sends a report on
27	 * release only, so receiving a report means the button was pressed.
28	 */
29	if (usage->hid == HID_GD_RFKILL_BTN) {
30		input_event(input, EV_KEY, KEY_RFKILL, 1);
31		input_sync(input);
32		input_event(input, EV_KEY, KEY_RFKILL, 0);
33		input_sync(input);
34		return 1;
35	}
36
37	return 0;
38}
39
40static const struct hid_device_id ite_devices[] = {
41	{ HID_USB_DEVICE(USB_VENDOR_ID_ITE, USB_DEVICE_ID_ITE8595) },
42	{ HID_USB_DEVICE(USB_VENDOR_ID_258A, USB_DEVICE_ID_258A_6A88) },
43	/* ITE8595 USB kbd ctlr, with Synaptics touchpad connected to it. */
44	{ HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
45		     USB_VENDOR_ID_SYNAPTICS,
46		     USB_DEVICE_ID_SYNAPTICS_ACER_SWITCH5_012) },
47	{ }
48};
49MODULE_DEVICE_TABLE(hid, ite_devices);
50
51static struct hid_driver ite_driver = {
52	.name = "itetech",
53	.id_table = ite_devices,
54	.event = ite_event,
55};
56module_hid_driver(ite_driver);
57
58MODULE_LICENSE("GPL");

 
 1/*
 2 * HID driver for some ITE "special" devices
 3 * Copyright (c) 2017 Hans de Goede <hdegoede@redhat.com>
 4 *
 5 * This program is free software; you can redistribute it and/or modify
 6 * it under the terms of the GNU General Public License version 2 as
 7 * published by the Free Software Foundation.
 8 */
 9
10#include <linux/device.h>
11#include <linux/input.h>
12#include <linux/hid.h>
13#include <linux/module.h>
14
15#include "hid-ids.h"
16
17static int ite_event(struct hid_device *hdev, struct hid_field *field,
18		     struct hid_usage *usage, __s32 value)
19{
20	struct input_dev *input;
21
22	if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput)
23		return 0;
24
25	input = field->hidinput->input;
26
27	/*
28	 * The ITE8595 always reports 0 as value for the rfkill button. Luckily
29	 * it is the only button in its report, and it sends a report on
30	 * release only, so receiving a report means the button was pressed.
31	 */
32	if (usage->hid == HID_GD_RFKILL_BTN) {
33		input_event(input, EV_KEY, KEY_RFKILL, 1);
34		input_sync(input);
35		input_event(input, EV_KEY, KEY_RFKILL, 0);
36		input_sync(input);
37		return 1;
38	}
39
40	return 0;
41}
42
43static const struct hid_device_id ite_devices[] = {
44	{ HID_USB_DEVICE(USB_VENDOR_ID_ITE, USB_DEVICE_ID_ITE8595) },
 
 
 
 
 
45	{ }
46};
47MODULE_DEVICE_TABLE(hid, ite_devices);
48
49static struct hid_driver ite_driver = {
50	.name = "itetech",
51	.id_table = ite_devices,
52	.event = ite_event,
53};
54module_hid_driver(ite_driver);
55
56MODULE_LICENSE("GPL");