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
  21 static 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
  37 static const struct hid_device_id penmount_devices[] = {
  38         { HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_6000) },
  39         { }
  40 };
  41 MODULE_DEVICE_TABLE(hid, penmount_devices);
  42
  43 static struct hid_driver penmount_driver = {
  44         .name = "hid-penmount",
  45         .id_table = penmount_devices,
  46         .input_mapping = penmount_input_mapping,
  47 };
  48
  49 module_hid_driver(penmount_driver);
  50
  51 MODULE_AUTHOR("Christian Gmeiner <christian.gmeiner@gmail.com>");
  52 MODULE_DESCRIPTION("PenMount HID TouchScreen driver");
  53 MODULE_LICENSE("GPL");