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
  22 static 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
  36 static const struct hid_device_id accutouch_devices[] = {
  37         { HID_USB_DEVICE(USB_VENDOR_ID_ELO, USB_DEVICE_ID_ELO_ACCUTOUCH_2216) },
  38         { }
  39 };
  40 MODULE_DEVICE_TABLE(hid, accutouch_devices);
  41
  42 static struct hid_driver accutouch_driver = {
  43         .name = "hid-accutouch",
  44         .id_table = accutouch_devices,
  45         .input_mapping = accutouch_input_mapping,
  46 };
  47
  48 module_hid_driver(accutouch_driver);
  49
  50 MODULE_AUTHOR("Martyn Welch <[email protected]");
  51 MODULE_DESCRIPTION("Elo Accutouch HID TouchScreen driver");
  52 MODULE_LICENSE("GPL");