LXR linux/drivers/hid/hid-accutouch.c

   1/*
   2 * HID driver for Elo Accutouch touchscreens
   3 *
   4 * Copyright (c) 2016, Collabora Ltd.
   5 * Copyright (c) 2016, General Electric Company
   6 *
   7 * based on hid-penmount.c
   8 *  Copyright (c) 2014 Christian Gmeiner <christian.gmeiner <at> gmail.com>
   9 */
  10
  11/*
  12 * This program is free software; you can redistribute it and/or modify it
  13 * under the terms of the GNU General Public License as published by the Free
  14 * Software Foundation; either version 2 of the License, or (at your option)
  15 * any later version.
  16 */
  17
  18#include <linux/hid.h>
  19#include <linux/module.h>
  20#include "hid-ids.h"
  21
  22static int accutouch_input_mapping(struct hid_device *hdev,
  23                                   struct hid_input *hi,
  24                                   struct hid_field *field,
  25                                   struct hid_usage *usage,
  26                                   unsigned long **bit, int *max)
  27{
  28        if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
  29                hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
  30                return 1;
  31        }
  32
  33        return 0;
  34}
  35
  36static const struct hid_device_id accutouch_devices[] = {
  37        { HID_USB_DEVICE(USB_VENDOR_ID_ELO, USB_DEVICE_ID_ELO_ACCUTOUCH_2216) },
  38        { }
  39};
  40MODULE_DEVICE_TABLE(hid, accutouch_devices);
  41
  42static struct hid_driver accutouch_driver = {
  43        .name = "hid-accutouch",
  44        .id_table = accutouch_devices,
  45        .input_mapping = accutouch_input_mapping,
  46};
  47
  48module_hid_driver(accutouch_driver);
  49
  50MODULE_AUTHOR("Martyn Welch <martyn.welch@collabora.co.uk");
  51MODULE_DESCRIPTION("Elo Accutouch HID TouchScreen driver");
  52MODULE_LICENSE("GPL");
  53