include/linux/rfkill.h

#ifndef __RFKILL_H
#define __RFKILL_H

/*
 * Copyright (C) 2006 - 2007 Ivo van Doorn
 * Copyright (C) 2007 Dmitry Torokhov
 * Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <linux/types.h>

#define RFKILL_STATE_SOFT_BLOCKED	0
#define RFKILL_STATE_UNBLOCKED		1
#define RFKILL_STATE_HARD_BLOCKED	2

enum rfkill_type {
	RFKILL_TYPE_ALL = 0,
	RFKILL_TYPE_WLAN,
	RFKILL_TYPE_BLUETOOTH,
	RFKILL_TYPE_UWB,
	RFKILL_TYPE_WIMAX,
	RFKILL_TYPE_WWAN,
	RFKILL_TYPE_GPS,
	RFKILL_TYPE_FM,
	NUM_RFKILL_TYPES,
};

enum rfkill_operation {
	RFKILL_OP_ADD = 0,
	RFKILL_OP_DEL,
	RFKILL_OP_CHANGE,
	RFKILL_OP_CHANGE_ALL,
};

struct rfkill_event {
	__u32 idx;
	__u8  type;
	__u8  op;
	__u8  soft, hard;
} __attribute__((packed));

#define RFKILL_EVENT_SIZE_V1	8

#define RFKILL_IOC_MAGIC	'R'
#define RFKILL_IOC_NOINPUT	1
#define RFKILL_IOCTL_NOINPUT	_IO(RFKILL_IOC_MAGIC, RFKILL_IOC_NOINPUT)

#ifdef __KERNEL__
enum rfkill_user_states {
	RFKILL_USER_STATE_SOFT_BLOCKED	= RFKILL_STATE_SOFT_BLOCKED,
	RFKILL_USER_STATE_UNBLOCKED	= RFKILL_STATE_UNBLOCKED,
	RFKILL_USER_STATE_HARD_BLOCKED	= RFKILL_STATE_HARD_BLOCKED,
};
#undef RFKILL_STATE_SOFT_BLOCKED
#undef RFKILL_STATE_UNBLOCKED
#undef RFKILL_STATE_HARD_BLOCKED

#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/leds.h>
#include <linux/err.h>

struct device;
struct rfkill;

struct rfkill_ops {
	void	(*poll)(struct rfkill *rfkill, void *data);
	void	(*query)(struct rfkill *rfkill, void *data);
	int	(*set_block)(void *data, bool blocked);
};

#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
struct rfkill * __must_check rfkill_alloc(const char *name,
					  struct device *parent,
					  const enum rfkill_type type,
					  const struct rfkill_ops *ops,
					  void *ops_data);

int __must_check rfkill_register(struct rfkill *rfkill);

void rfkill_pause_polling(struct rfkill *rfkill);

#ifdef CONFIG_RFKILL_PM
void rfkill_resume_polling(struct rfkill *rfkill);
#else
static inline void rfkill_resume_polling(struct rfkill *rfkill) { }
#endif

void rfkill_unregister(struct rfkill *rfkill);

void rfkill_destroy(struct rfkill *rfkill);

bool rfkill_set_hw_state(struct rfkill *rfkill, bool blocked);

bool rfkill_set_sw_state(struct rfkill *rfkill, bool blocked);

void rfkill_init_sw_state(struct rfkill *rfkill, bool blocked);

void rfkill_set_states(struct rfkill *rfkill, bool sw, bool hw);

bool rfkill_blocked(struct rfkill *rfkill);
#else 
static inline struct rfkill * __must_check
rfkill_alloc(const char *name,
	     struct device *parent,
	     const enum rfkill_type type,
	     const struct rfkill_ops *ops,
	     void *ops_data)
{
	return ERR_PTR(-ENODEV);
}

static inline int __must_check rfkill_register(struct rfkill *rfkill)
{
	if (rfkill == ERR_PTR(-ENODEV))
		return 0;
	return -EINVAL;
}

static inline void rfkill_pause_polling(struct rfkill *rfkill)
{
}

static inline void rfkill_resume_polling(struct rfkill *rfkill)
{
}

static inline void rfkill_unregister(struct rfkill *rfkill)
{
}

static inline void rfkill_destroy(struct rfkill *rfkill)
{
}

static inline bool rfkill_set_hw_state(struct rfkill *rfkill, bool blocked)
{
	return blocked;
}

static inline bool rfkill_set_sw_state(struct rfkill *rfkill, bool blocked)
{
	return blocked;
}

static inline void rfkill_init_sw_state(struct rfkill *rfkill, bool blocked)
{
}

static inline void rfkill_set_states(struct rfkill *rfkill, bool sw, bool hw)
{
}

static inline bool rfkill_blocked(struct rfkill *rfkill)
{
	return false;
}
#endif 

#endif 

#endif