include/linux/keycombo.h

   1 /*
   2  * include/linux/keycombo.h - platform data structure for keycombo driver
   3  *
   4  * Copyright (C) 2014 Google, Inc.
   5  *
   6  * This software is licensed under the terms of the GNU General Public
   7  * License version 2, as published by the Free Software Foundation, and
   8  * may be copied, distributed, and modified under those terms.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  */
  16
  17 #ifndef _LINUX_KEYCOMBO_H
  18 #define _LINUX_KEYCOMBO_H
  19
  20 #define KEYCOMBO_NAME "keycombo"
  21
  22 /*
  23  * if key_down_fn and key_up_fn are both present, you are guaranteed that
  24  * key_down_fn will return before key_up_fn is called, and that key_up_fn
  25  * is called iff key_down_fn is called.
  26  */
  27 struct keycombo_platform_data {
  28         void (*key_down_fn)(void *);
  29         void (*key_up_fn)(void *);
  30         void *priv;
  31         int key_down_delay; /* Time in ms */
  32         int *keys_up;
  33         int keys_down[]; /* 0 terminated */
  34 };
  35
  36 #endif /* _LINUX_KEYCOMBO_H */