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

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 *  HID driver for PenMount touchscreens
   4 *
   5 *  Copyright (c) 2014 Christian Gmeiner <christian.gmeiner <at> gmail.com>
   6 *
   7 *  based on hid-penmount copyrighted by
   8 *    PenMount Touch Solutions <penmount <at> seed.net.tw>
   9 */
  10
  11/*
  12 */
  13
  14#include <linux/module.h>
  15#include <linux/hid.h>
  16#include "hid-ids.h"
  17
  18static int penmount_input_mapping(struct hid_device *hdev,
  19                struct hid_input *hi, struct hid_field *field,
  20                struct hid_usage *usage, unsigned long **bit, int *max)
  21{
  22        if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
  23                if (((usage->hid - 1) & HID_USAGE) == 0) {
  24                        hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
  25                        return 1;
  26                } else {
  27                        return -1;
  28                }
  29        }
  30
  31        return 0;
  32}
  33
  34static const struct hid_device_id penmount_devices[] = {
  35        { HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_6000) },
  36        { }
  37};
  38MODULE_DEVICE_TABLE(hid, penmount_devices);
  39
  40static struct hid_driver penmount_driver = {
  41        .name = "hid-penmount",
  42        .id_table = penmount_devices,
  43        .input_mapping = penmount_input_mapping,
  44};
  45
  46module_hid_driver(penmount_driver);
  47
  48MODULE_AUTHOR("Christian Gmeiner <christian.gmeiner@gmail.com>");
  49MODULE_DESCRIPTION("PenMount HID TouchScreen driver");
  50MODULE_LICENSE("GPL");
  51