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

   1/*
   2 *  HID driver for PenMount touchscreens
   3 *
   4 *  Copyright (c) 2014 Christian Gmeiner <christian.gmeiner <at> gmail.com>
   5 *
   6 *  based on hid-penmount copyrighted by
   7 *    PenMount Touch Solutions <penmount <at> seed.net.tw>
   8 */
   9
  10/*
  11 * This program is free software; you can redistribute it and/or modify it
  12 * under the terms of the GNU General Public License as published by the Free
  13 * Software Foundation; either version 2 of the License, or (at your option)
  14 * any later version.
  15 */
  16
  17#include <linux/module.h>
  18#include <linux/hid.h>
  19#include "hid-ids.h"
  20
  21static int penmount_input_mapping(struct hid_device *hdev,
  22                struct hid_input *hi, struct hid_field *field,
  23                struct hid_usage *usage, unsigned long **bit, int *max)
  24{
  25        if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
  26                if (((usage->hid - 1) & HID_USAGE) == 0) {
  27                        hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
  28                        return 1;
  29                } else {
  30                        return -1;
  31                }
  32        }
  33
  34        return 0;
  35}
  36
  37static const struct hid_device_id penmount_devices[] = {
  38        { HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_6000) },
  39        { }
  40};
  41MODULE_DEVICE_TABLE(hid, penmount_devices);
  42
  43static struct hid_driver penmount_driver = {
  44        .name = "hid-penmount",
  45        .id_table = penmount_devices,
  46        .input_mapping = penmount_input_mapping,
  47};
  48
  49module_hid_driver(penmount_driver);
  50
  51MODULE_AUTHOR("Christian Gmeiner <christian.gmeiner@gmail.com>");
  52MODULE_DESCRIPTION("PenMount HID TouchScreen driver");
  53MODULE_LICENSE("GPL");
  54