Eric Lee / smarc-fsl-linux-kernel

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drivers/input/input-compat.h 2.11 KB
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2d56f3a32   Philip Langdale   Input: refactor e... 
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  #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
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 as published by
   * the Free Software Foundation.
   */
  
  #include <linux/compiler.h>
  #include <linux/compat.h>
  #include <linux/input.h>
  
  #ifdef CONFIG_COMPAT
  
  /* Note to the author of this code: did it ever occur to
     you why the ifdefs are needed? Think about it again. -AK */
18aecc2b6   Chris Metcalf   arch/tile: finish... 
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  #if defined(CONFIG_X86_64) || defined(CONFIG_TILE)
2d56f3a32   Philip Langdale   Input: refactor e... 
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  #  define INPUT_COMPAT_TEST is_compat_task()
2d56f3a32   Philip Langdale   Input: refactor e... 
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  #elif defined(CONFIG_S390)
  #  define INPUT_COMPAT_TEST test_thread_flag(TIF_31BIT)
  #elif defined(CONFIG_MIPS)
  #  define INPUT_COMPAT_TEST test_thread_flag(TIF_32BIT_ADDR)
  #else
  #  define INPUT_COMPAT_TEST test_thread_flag(TIF_32BIT)
  #endif
  
  struct input_event_compat {
  	struct compat_timeval time;
  	__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 INPUT_COMPAT_TEST ?
  		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 */