1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * HID driver for Elo Accutouch touchscreens
4 *
5 * Copyright (c) 2016, Collabora Ltd.
6 * Copyright (c) 2016, General Electric Company
7 *
8 * based on hid-penmount.c
9 *  Copyright (c) 2014 Christian Gmeiner <christian.gmeiner <at> gmail.com>
10 */
11
12/*
13 */
14
15#include <linux/hid.h>
16#include <linux/module.h>
17#include "hid-ids.h"
18
19static int accutouch_input_mapping(struct hid_device *hdev,
20				   struct hid_input *hi,
21				   struct hid_field *field,
22				   struct hid_usage *usage,
23				   unsigned long **bit, int *max)
24{
25	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
26		hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
27		return 1;
28	}
29
30	return 0;
31}
32
33static const struct hid_device_id accutouch_devices[] = {
34	{ HID_USB_DEVICE(USB_VENDOR_ID_ELO, USB_DEVICE_ID_ELO_ACCUTOUCH_2216) },
35	{ }
36};
37MODULE_DEVICE_TABLE(hid, accutouch_devices);
38
39static struct hid_driver accutouch_driver = {
40	.name = "hid-accutouch",
41	.id_table = accutouch_devices,
42	.input_mapping = accutouch_input_mapping,
43};
44
45module_hid_driver(accutouch_driver);
46
47MODULE_AUTHOR("Martyn Welch <martyn.welch@collabora.co.uk");
48MODULE_DESCRIPTION("Elo Accutouch HID TouchScreen driver");
49MODULE_LICENSE("GPL");
50