/*
   *  User level driver support for input subsystem
   *
   * Heavily based on evdev.c by Vojtech Pavlik
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
   *
   * Author: Aristeu Sergio Rozanski Filho <aris@cathedrallabs.org>

   *

   * Changes/Revisions:

   *	0.5	08/13/2015 (David Herrmann <dh.herrmann@gmail.com> &
   *			    Benjamin Tissoires <benjamin.tissoires@redhat.com>)
   *		- add UI_DEV_SETUP ioctl
   *		- add UI_ABS_SETUP ioctl
   *		- add UI_GET_VERSION ioctl

   *	0.4	01/09/2014 (Benjamin Tissoires <benjamin.tissoires@redhat.com>)
   *		- add UI_GET_SYSNAME ioctl

   *	0.3	24/05/2006 (Anssi Hannula <anssi.hannulagmail.com>)
   *		- update ff support for the changes in kernel interface
   *		- add UINPUT_VERSION

   *	0.2	16/10/2004 (Micah Dowty <micah@navi.cx>)
   *		- added force feedback support
   *             - added UI_SET_PHYS
   *	0.1	20/06/2002
   *		- first public version
   */

  #ifndef __UINPUT_H_
  #define __UINPUT_H_

  #include <uapi/linux/uinput.h>

  #define UINPUT_NAME		"uinput"
  #define UINPUT_BUFFER_SIZE	16
  #define UINPUT_NUM_REQUESTS	16

  enum uinput_state { UIST_NEW_DEVICE, UIST_SETUP_COMPLETE, UIST_CREATED };

  
  struct uinput_request {

  	unsigned int		id;
  	unsigned int		code;	/* UI_FF_UPLOAD, UI_FF_ERASE */

  
  	int			retval;

  	struct completion	done;

  
  	union {

  		unsigned int	effect_id;

  		struct {
  			struct ff_effect *effect;
  			struct ff_effect *old;
  		} upload;

  	} u;
  };
  
  struct uinput_device {
  	struct input_dev	*dev;

  	struct mutex		mutex;

  	enum uinput_state	state;

  	wait_queue_head_t	waitq;

  	unsigned char		ready;
  	unsigned char		head;
  	unsigned char		tail;

  	struct input_event	buff[UINPUT_BUFFER_SIZE];

  	unsigned int		ff_effects_max;

  
  	struct uinput_request	*requests[UINPUT_NUM_REQUESTS];
  	wait_queue_head_t	requests_waitq;

  	spinlock_t		requests_lock;

  };

  #endif	/* __UINPUT_H_ */