/* SPDX-License-Identifier: GPL-2.0-only */

  #ifndef _INPUT_COMPAT_H
  #define _INPUT_COMPAT_H
  
  /*
   * 32bit compatibility wrappers for the input subsystem.
   *
   * Very heavily based on evdev.c - Copyright (c) 1999-2002 Vojtech Pavlik

   */
  
  #include <linux/compiler.h>
  #include <linux/compat.h>
  #include <linux/input.h>
  
  #ifdef CONFIG_COMPAT

  struct input_event_compat {

  	compat_ulong_t sec;
  	compat_ulong_t usec;

  	__u16 type;
  	__u16 code;
  	__s32 value;
  };
  
  struct ff_periodic_effect_compat {
  	__u16 waveform;
  	__u16 period;
  	__s16 magnitude;
  	__s16 offset;
  	__u16 phase;
  
  	struct ff_envelope envelope;
  
  	__u32 custom_len;
  	compat_uptr_t custom_data;
  };
  
  struct ff_effect_compat {
  	__u16 type;
  	__s16 id;
  	__u16 direction;
  	struct ff_trigger trigger;
  	struct ff_replay replay;
  
  	union {
  		struct ff_constant_effect constant;
  		struct ff_ramp_effect ramp;
  		struct ff_periodic_effect_compat periodic;
  		struct ff_condition_effect condition[2]; /* One for each axis */
  		struct ff_rumble_effect rumble;
  	} u;
  };
  
  static inline size_t input_event_size(void)
  {

  	return (in_compat_syscall() && !COMPAT_USE_64BIT_TIME) ?

  		sizeof(struct input_event_compat) : sizeof(struct input_event);
  }
  
  #else
  
  static inline size_t input_event_size(void)
  {
  	return sizeof(struct input_event);
  }
  
  #endif /* CONFIG_COMPAT */
  
  int input_event_from_user(const char __user *buffer,
  			 struct input_event *event);
  
  int input_event_to_user(char __user *buffer,
  			const struct input_event *event);
  
  int input_ff_effect_from_user(const char __user *buffer, size_t size,
  			      struct ff_effect *effect);
  
  #endif /* _INPUT_COMPAT_H */