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 19 static 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 33 static const struct hid_device_id accutouch_devices[] = { 34 { HID_USB_DEVICE(USB_VENDOR_ID_ELO, USB_DEVICE_ID_ELO_ACCUTOUCH_2216) }, 35 { } 36 }; 37 MODULE_DEVICE_TABLE(hid, accutouch_devices); 38 39 static struct hid_driver accutouch_driver = { 40 .name = "hid-accutouch", 41 .id_table = accutouch_devices, 42 .input_mapping = accutouch_input_mapping, 43 }; 44 45 module_hid_driver(accutouch_driver); 46 47 MODULE_AUTHOR("Martyn Welch <martyn.welch@collabora.co.uk"); 48 MODULE_DESCRIPTION("Elo Accutouch HID TouchScreen driver"); 49 MODULE_LICENSE("GPL"); 50