[net-next-2.6.git] / 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 userspace visible states */
#define RFKILL_STATE_SOFT_BLOCKED	0
#define RFKILL_STATE_UNBLOCKED		1
#define RFKILL_STATE_HARD_BLOCKED	2

/**
 * enum rfkill_type - type of rfkill switch.
 *
 * @RFKILL_TYPE_ALL: toggles all switches (requests only - not a switch type)
 * @RFKILL_TYPE_WLAN: switch is on a 802.11 wireless network device.
 * @RFKILL_TYPE_BLUETOOTH: switch is on a bluetooth device.
 * @RFKILL_TYPE_UWB: switch is on a ultra wideband device.
 * @RFKILL_TYPE_WIMAX: switch is on a WiMAX device.
 * @RFKILL_TYPE_WWAN: switch is on a wireless WAN device.
 * @RFKILL_TYPE_GPS: switch is on a GPS device.
 * @RFKILL_TYPE_FM: switch is on a FM radio device.
 * @NUM_RFKILL_TYPES: number of defined rfkill types
 */
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 - operation types
 * @RFKILL_OP_ADD: a device was added
 * @RFKILL_OP_DEL: a device was removed
 * @RFKILL_OP_CHANGE: a device's state changed -- userspace changes one device
 * @RFKILL_OP_CHANGE_ALL: userspace changes all devices (of a type, or all)
 */
enum rfkill_operation {
	RFKILL_OP_ADD = 0,
	RFKILL_OP_DEL,
	RFKILL_OP_CHANGE,
	RFKILL_OP_CHANGE_ALL,
};

/**
 * struct rfkill_event - events for userspace on /dev/rfkill
 * @idx: index of dev rfkill
 * @type: type of the rfkill struct
 * @op: operation code
 * @hard: hard state (0/1)
 * @soft: soft state (0/1)
 *
 * Structure used for userspace communication on /dev/rfkill,
 * used for events from the kernel and control to the kernel.
 */
struct rfkill_event {
	__u32 idx;
	__u8  type;
	__u8  op;
	__u8  soft, hard;
} __attribute__((packed));

/*
 * We are planning to be backward and forward compatible with changes
 * to the event struct, by adding new, optional, members at the end.
 * When reading an event (whether the kernel from userspace or vice
 * versa) we need to accept anything that's at least as large as the
 * version 1 event size, but might be able to accept other sizes in
 * the future.
 *
 * One exception is the kernel -- we already have two event sizes in
 * that we've made the 'hard' member optional since our only option
 * is to ignore it anyway.
 */
#define RFKILL_EVENT_SIZE_V1	8

/* ioctl for turning off rfkill-input (if present) */
#define RFKILL_IOC_MAGIC	'R'
#define RFKILL_IOC_NOINPUT	1
#define RFKILL_IOCTL_NOINPUT	_IO(RFKILL_IOC_MAGIC, RFKILL_IOC_NOINPUT)

/* and that's all userspace gets */
#ifdef __KERNEL__
/* don't allow anyone to use these in the 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/device.h>
#include <linux/leds.h>
#include <linux/err.h>

/* this is opaque */
struct rfkill;

/**
 * struct rfkill_ops - rfkill driver methods
 *
 * @poll: poll the rfkill block state(s) -- only assign this method
 *	when you need polling. When called, simply call one of the
 *	rfkill_set{,_hw,_sw}_state family of functions. If the hw
 *	is getting unblocked you need to take into account the return
 *	value of those functions to make sure the software block is
 *	properly used.
 * @query: query the rfkill block state(s) and call exactly one of the
 *	rfkill_set{,_hw,_sw}_state family of functions. Assign this
 *	method if input events can cause hardware state changes to make
 *	the rfkill core query your driver before setting a requested
 *	block.
 * @set_block: turn the transmitter on (blocked == false) or off
 *	(blocked == true) -- ignore and return 0 when hard blocked.
 *	This callback must be assigned.
 */
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)
/**
 * rfkill_alloc - allocate rfkill structure
 * @name: name of the struct -- the string is not copied internally
 * @parent: device that has rf switch on it
 * @type: type of the switch (RFKILL_TYPE_*)
 * @ops: rfkill methods
 * @ops_data: data passed to each method
 *
 * This function should be called by the transmitter driver to allocate an
 * rfkill structure. Returns %NULL on failure.
 */
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);

/**
 * rfkill_register - Register a rfkill structure.
 * @rfkill: rfkill structure to be registered
 *
 * This function should be called by the transmitter driver to register
 * the rfkill structure. Before calling this function the driver needs
 * to be ready to service method calls from rfkill.
 *
 * If rfkill_init_sw_state() is not called before registration,
 * set_block() will be called to initialize the software blocked state
 * to a default value.
 *
 * If the hardware blocked state is not set before registration,
 * it is assumed to be unblocked.
 */
int __must_check rfkill_register(struct rfkill *rfkill);

/**
 * rfkill_pause_polling(struct rfkill *rfkill)
 *
 * Pause polling -- say transmitter is off for other reasons.
 * NOTE: not necessary for suspend/resume -- in that case the
 * core stops polling anyway
 */
void rfkill_pause_polling(struct rfkill *rfkill);

/**
 * rfkill_resume_polling(struct rfkill *rfkill)
 *
 * Pause polling -- say transmitter is off for other reasons.
 * NOTE: not necessary for suspend/resume -- in that case the
 * core stops polling anyway
 */
void rfkill_resume_polling(struct rfkill *rfkill);


/**
 * rfkill_unregister - Unregister a rfkill structure.
 * @rfkill: rfkill structure to be unregistered
 *
 * This function should be called by the network driver during device
 * teardown to destroy rfkill structure. Until it returns, the driver
 * needs to be able to service method calls.
 */
void rfkill_unregister(struct rfkill *rfkill);

/**
 * rfkill_destroy - free rfkill structure
 * @rfkill: rfkill structure to be destroyed
 *
 * Destroys the rfkill structure.
 */
void rfkill_destroy(struct rfkill *rfkill);

/**
 * rfkill_set_hw_state - Set the internal rfkill hardware block state
 * @rfkill: pointer to the rfkill class to modify.
 * @state: the current hardware block state to set
 *
 * rfkill drivers that get events when the hard-blocked state changes
 * use this function to notify the rfkill core (and through that also
 * userspace) of the current state.  They should also use this after
 * resume if the state could have changed.
 *
 * You need not (but may) call this function if poll_state is assigned.
 *
 * This function can be called in any context, even from within rfkill
 * callbacks.
 *
 * The function returns the combined block state (true if transmitter
 * should be blocked) so that drivers need not keep track of the soft
 * block state -- which they might not be able to.
 */
bool rfkill_set_hw_state(struct rfkill *rfkill, bool blocked);

/**
 * rfkill_set_sw_state - Set the internal rfkill software block state
 * @rfkill: pointer to the rfkill class to modify.
 * @state: the current software block state to set
 *
 * rfkill drivers that get events when the soft-blocked state changes
 * (yes, some platforms directly act on input but allow changing again)
 * use this function to notify the rfkill core (and through that also
 * userspace) of the current state.
 *
 * Drivers should also call this function after resume if the state has
 * been changed by the user.  This only makes sense for "persistent"
 * devices (see rfkill_init_sw_state()).
 *
 * This function can be called in any context, even from within rfkill
 * callbacks.
 *
 * The function returns the combined block state (true if transmitter
 * should be blocked).
 */
bool rfkill_set_sw_state(struct rfkill *rfkill, bool blocked);

/**
 * rfkill_init_sw_state - Initialize persistent software block state
 * @rfkill: pointer to the rfkill class to modify.
 * @state: the current software block state to set
 *
 * rfkill drivers that preserve their software block state over power off
 * use this function to notify the rfkill core (and through that also
 * userspace) of their initial state.  It should only be used before
 * registration.
 *
 * In addition, it marks the device as "persistent", an attribute which
 * can be read by userspace.  Persistent devices are expected to preserve
 * their own state when suspended.
 */
void rfkill_init_sw_state(struct rfkill *rfkill, bool blocked);

/**
 * rfkill_set_states - Set the internal rfkill block states
 * @rfkill: pointer to the rfkill class to modify.
 * @sw: the current software block state to set
 * @hw: the current hardware block state to set
 *
 * This function can be called in any context, even from within rfkill
 * callbacks.
 */
void rfkill_set_states(struct rfkill *rfkill, bool sw, bool hw);

/**
 * rfkill_blocked - query rfkill block
 *
 * @rfkill: rfkill struct to query
 */
bool rfkill_blocked(struct rfkill *rfkill);
#else /* !RFKILL */
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 /* RFKILL || RFKILL_MODULE */

#endif /* __KERNEL__ */

#endif /* RFKILL_H */
Commit	Line	Data
cf4328cd ID	1	#ifndef __RFKILL_H
	2	#define __RFKILL_H
	3
	4	/*
fe242cfd	5	* Copyright (C) 2006 - 2007 Ivo van Doorn
cf4328cd	6	* Copyright (C) 2007 Dmitry Torokhov
19d337df	7	* Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
cf4328cd	8	*
8bc11b49 JB	9	* Permission to use, copy, modify, and/or distribute this software for any
	10	* purpose with or without fee is hereby granted, provided that the above
	11	* copyright notice and this permission notice appear in all copies.
cf4328cd	12	*
8bc11b49 JB	13	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	14	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	15	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	16	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	17	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
	18	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
	19	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
cf4328cd ID	20	*/
cf4328cd ID	21
c64fb016	22	#include <linux/types.h>
19d337df JB	23
	24	/* define userspace visible states */
	25	#define RFKILL_STATE_SOFT_BLOCKED 0
	26	#define RFKILL_STATE_UNBLOCKED 1
	27	#define RFKILL_STATE_HARD_BLOCKED 2
	28
cf4328cd ID	29	/**
cf4328cd ID	30	* enum rfkill_type - type of rfkill switch.
19d337df	31	*
3082a2b7	32	* @RFKILL_TYPE_ALL: toggles all switches (requests only - not a switch type)
19d337df JB	33	* @RFKILL_TYPE_WLAN: switch is on a 802.11 wireless network device.
	34	* @RFKILL_TYPE_BLUETOOTH: switch is on a bluetooth device.
	35	* @RFKILL_TYPE_UWB: switch is on a ultra wideband device.
	36	* @RFKILL_TYPE_WIMAX: switch is on a WiMAX device.
	37	* @RFKILL_TYPE_WWAN: switch is on a wireless WAN device.
0878c350	38	* @RFKILL_TYPE_GPS: switch is on a GPS device.
875405a7	39	* @RFKILL_TYPE_FM: switch is on a FM radio device.
19d337df	40	* @NUM_RFKILL_TYPES: number of defined rfkill types
cf4328cd ID	41	*/
cf4328cd ID	42	enum rfkill_type {
c64fb016	43	RFKILL_TYPE_ALL = 0,
19d337df	44	RFKILL_TYPE_WLAN,
234a0ca6	45	RFKILL_TYPE_BLUETOOTH,
e0665486	46	RFKILL_TYPE_UWB,
303d9bf6	47	RFKILL_TYPE_WIMAX,
477576a0	48	RFKILL_TYPE_WWAN,
3ad20149	49	RFKILL_TYPE_GPS,
875405a7	50	RFKILL_TYPE_FM,
19d337df	51	NUM_RFKILL_TYPES,
cf4328cd ID	52	};
cf4328cd ID	53
c64fb016 JB	54	/**
	55	* enum rfkill_operation - operation types
	56	* @RFKILL_OP_ADD: a device was added
	57	* @RFKILL_OP_DEL: a device was removed
	58	* @RFKILL_OP_CHANGE: a device's state changed -- userspace changes one device
	59	* @RFKILL_OP_CHANGE_ALL: userspace changes all devices (of a type, or all)
	60	*/
	61	enum rfkill_operation {
	62	RFKILL_OP_ADD = 0,
	63	RFKILL_OP_DEL,
	64	RFKILL_OP_CHANGE,
	65	RFKILL_OP_CHANGE_ALL,
	66	};
	67
	68	/**
	69	* struct rfkill_event - events for userspace on /dev/rfkill
	70	* @idx: index of dev rfkill
	71	* @type: type of the rfkill struct
	72	* @op: operation code
	73	* @hard: hard state (0/1)
	74	* @soft: soft state (0/1)
	75	*
	76	* Structure used for userspace communication on /dev/rfkill,
	77	* used for events from the kernel and control to the kernel.
	78	*/
	79	struct rfkill_event {
	80	__u32 idx;
	81	__u8 type;
	82	__u8 op;
	83	__u8 soft, hard;
09cd2b99	84	} __attribute__((packed));
c64fb016	85
1be491fc JB	86	/*
	87	* We are planning to be backward and forward compatible with changes
	88	* to the event struct, by adding new, optional, members at the end.
	89	* When reading an event (whether the kernel from userspace or vice
	90	* versa) we need to accept anything that's at least as large as the
	91	* version 1 event size, but might be able to accept other sizes in
	92	* the future.
	93	*
	94	* One exception is the kernel -- we already have two event sizes in
	95	* that we've made the 'hard' member optional since our only option
	96	* is to ignore it anyway.
	97	*/
	98	#define RFKILL_EVENT_SIZE_V1 8
	99
c64fb016 JB	100	/* ioctl for turning off rfkill-input (if present) */
	101	#define RFKILL_IOC_MAGIC 'R'
	102	#define RFKILL_IOC_NOINPUT 1
	103	#define RFKILL_IOCTL_NOINPUT _IO(RFKILL_IOC_MAGIC, RFKILL_IOC_NOINPUT)
	104
	105	/* and that's all userspace gets */
	106	#ifdef __KERNEL__
	107	/* don't allow anyone to use these in the kernel */
	108	enum rfkill_user_states {
	109	RFKILL_USER_STATE_SOFT_BLOCKED = RFKILL_STATE_SOFT_BLOCKED,
	110	RFKILL_USER_STATE_UNBLOCKED = RFKILL_STATE_UNBLOCKED,
	111	RFKILL_USER_STATE_HARD_BLOCKED = RFKILL_STATE_HARD_BLOCKED,
	112	};
	113	#undef RFKILL_STATE_SOFT_BLOCKED
	114	#undef RFKILL_STATE_UNBLOCKED
	115	#undef RFKILL_STATE_HARD_BLOCKED
	116
c64fb016 JB	117	#include <linux/kernel.h>
	118	#include <linux/list.h>
	119	#include <linux/mutex.h>
	120	#include <linux/device.h>
	121	#include <linux/leds.h>
1506e30b	122	#include <linux/err.h>
c64fb016	123
19d337df JB	124	/* this is opaque */
	125	struct rfkill;
	126
	127	/**
	128	* struct rfkill_ops - rfkill driver methods
	129	*
	130	* @poll: poll the rfkill block state(s) -- only assign this method
	131	* when you need polling. When called, simply call one of the
	132	* rfkill_set{,_hw,_sw}_state family of functions. If the hw
	133	* is getting unblocked you need to take into account the return
	134	* value of those functions to make sure the software block is
	135	* properly used.
	136	* @query: query the rfkill block state(s) and call exactly one of the
	137	* rfkill_set{,_hw,_sw}_state family of functions. Assign this
	138	* method if input events can cause hardware state changes to make
	139	* the rfkill core query your driver before setting a requested
	140	* block.
	141	* @set_block: turn the transmitter on (blocked == false) or off
c64fb016	142	* (blocked == true) -- ignore and return 0 when hard blocked.
19d337df JB	143	* This callback must be assigned.
	144	*/
	145	struct rfkill_ops {
	146	void (poll)(struct rfkill rfkill, void *data);
	147	void (query)(struct rfkill rfkill, void *data);
	148	int (set_block)(void data, bool blocked);
cf4328cd ID	149	};
cf4328cd ID	150
19d337df	151	#if defined(CONFIG_RFKILL) \|\| defined(CONFIG_RFKILL_MODULE)
cf4328cd	152	/**
19d337df JB	153	* rfkill_alloc - allocate rfkill structure
	154	* @name: name of the struct -- the string is not copied internally
	155	* @parent: device that has rf switch on it
	156	* @type: type of the switch (RFKILL_TYPE_*)
	157	* @ops: rfkill methods
	158	* @ops_data: data passed to each method
	159	*
	160	* This function should be called by the transmitter driver to allocate an
	161	* rfkill structure. Returns %NULL on failure.
cf4328cd	162	*/
19d337df JB	163	struct rfkill * __must_check rfkill_alloc(const char *name,
	164	struct device *parent,
	165	const enum rfkill_type type,
	166	const struct rfkill_ops *ops,
	167	void *ops_data);
cf4328cd	168
19d337df JB	169	/**
	170	* rfkill_register - Register a rfkill structure.
	171	* @rfkill: rfkill structure to be registered
	172	*
	173	* This function should be called by the transmitter driver to register
b3fa1329 AJ	174	* the rfkill structure. Before calling this function the driver needs
	175	* to be ready to service method calls from rfkill.
	176	*
06d5caf4 AJ	177	* If rfkill_init_sw_state() is not called before registration,
	178	* set_block() will be called to initialize the software blocked state
	179	* to a default value.
b3fa1329 AJ	180	*
	181	* If the hardware blocked state is not set before registration,
	182	* it is assumed to be unblocked.
19d337df JB	183	*/
19d337df JB	184	int __must_check rfkill_register(struct rfkill *rfkill);
135900c1	185
19d337df JB	186	/**
	187	* rfkill_pause_polling(struct rfkill *rfkill)
	188	*
	189	* Pause polling -- say transmitter is off for other reasons.
	190	* NOTE: not necessary for suspend/resume -- in that case the
	191	* core stops polling anyway
	192	*/
	193	void rfkill_pause_polling(struct rfkill *rfkill);
cf4328cd	194
19d337df JB	195	/**
	196	* rfkill_resume_polling(struct rfkill *rfkill)
	197	*
	198	* Pause polling -- say transmitter is off for other reasons.
	199	* NOTE: not necessary for suspend/resume -- in that case the
	200	* core stops polling anyway
	201	*/
	202	void rfkill_resume_polling(struct rfkill *rfkill);
	203
	204
	205	/**
	206	* rfkill_unregister - Unregister a rfkill structure.
	207	* @rfkill: rfkill structure to be unregistered
	208	*
	209	* This function should be called by the network driver during device
	210	* teardown to destroy rfkill structure. Until it returns, the driver
	211	* needs to be able to service method calls.
	212	*/
cf4328cd ID	213	void rfkill_unregister(struct rfkill *rfkill);
cf4328cd ID	214
19d337df JB	215	/**
	216	* rfkill_destroy - free rfkill structure
	217	* @rfkill: rfkill structure to be destroyed
	218	*
	219	* Destroys the rfkill structure.
	220	*/
	221	void rfkill_destroy(struct rfkill *rfkill);
	222
	223	/**
	224	* rfkill_set_hw_state - Set the internal rfkill hardware block state
	225	* @rfkill: pointer to the rfkill class to modify.
	226	* @state: the current hardware block state to set
	227	*
	228	* rfkill drivers that get events when the hard-blocked state changes
	229	* use this function to notify the rfkill core (and through that also
908209c1	230	* userspace) of the current state. They should also use this after
19d337df JB	231	* resume if the state could have changed.
	232	*
	233	* You need not (but may) call this function if poll_state is assigned.
	234	*
	235	* This function can be called in any context, even from within rfkill
	236	* callbacks.
	237	*
	238	* The function returns the combined block state (true if transmitter
	239	* should be blocked) so that drivers need not keep track of the soft
	240	* block state -- which they might not be able to.
	241	*/
e56f0975	242	bool rfkill_set_hw_state(struct rfkill *rfkill, bool blocked);
19d337df JB	243
	244	/**
	245	* rfkill_set_sw_state - Set the internal rfkill software block state
	246	* @rfkill: pointer to the rfkill class to modify.
	247	* @state: the current software block state to set
	248	*
	249	* rfkill drivers that get events when the soft-blocked state changes
	250	* (yes, some platforms directly act on input but allow changing again)
	251	* use this function to notify the rfkill core (and through that also
06d5caf4 AJ	252	* userspace) of the current state.
	253	*
	254	* Drivers should also call this function after resume if the state has
	255	* been changed by the user. This only makes sense for "persistent"
	256	* devices (see rfkill_init_sw_state()).
19d337df JB	257	*
	258	* This function can be called in any context, even from within rfkill
	259	* callbacks.
	260	*
	261	* The function returns the combined block state (true if transmitter
	262	* should be blocked).
	263	*/
	264	bool rfkill_set_sw_state(struct rfkill *rfkill, bool blocked);
	265
06d5caf4 AJ	266	/**
	267	* rfkill_init_sw_state - Initialize persistent software block state
	268	* @rfkill: pointer to the rfkill class to modify.
	269	* @state: the current software block state to set
	270	*
	271	* rfkill drivers that preserve their software block state over power off
	272	* use this function to notify the rfkill core (and through that also
	273	* userspace) of their initial state. It should only be used before
	274	* registration.
	275	*
464902e8 AJ	276	* In addition, it marks the device as "persistent", an attribute which
	277	* can be read by userspace. Persistent devices are expected to preserve
	278	* their own state when suspended.
06d5caf4 AJ	279	*/
	280	void rfkill_init_sw_state(struct rfkill *rfkill, bool blocked);
	281
19d337df JB	282	/**
	283	* rfkill_set_states - Set the internal rfkill block states
	284	* @rfkill: pointer to the rfkill class to modify.
	285	* @sw: the current software block state to set
	286	* @hw: the current hardware block state to set
	287	*
	288	* This function can be called in any context, even from within rfkill
	289	* callbacks.
	290	*/
	291	void rfkill_set_states(struct rfkill *rfkill, bool sw, bool hw);
801e49af	292
6081162e JB	293	/**
	294	* rfkill_blocked - query rfkill block
	295	*
	296	* @rfkill: rfkill struct to query
	297	*/
	298	bool rfkill_blocked(struct rfkill *rfkill);
19d337df JB	299	#else /* !RFKILL */
	300	static inline struct rfkill * __must_check
	301	rfkill_alloc(const char *name,
	302	struct device *parent,
	303	const enum rfkill_type type,
	304	const struct rfkill_ops *ops,
	305	void *ops_data)
	306	{
	307	return ERR_PTR(-ENODEV);
	308	}
	309
	310	static inline int __must_check rfkill_register(struct rfkill *rfkill)
	311	{
	312	if (rfkill == ERR_PTR(-ENODEV))
	313	return 0;
	314	return -EINVAL;
	315	}
	316
	317	static inline void rfkill_pause_polling(struct rfkill *rfkill)
	318	{
	319	}
	320
	321	static inline void rfkill_resume_polling(struct rfkill *rfkill)
	322	{
	323	}
	324
	325	static inline void rfkill_unregister(struct rfkill *rfkill)
	326	{
	327	}
	328
	329	static inline void rfkill_destroy(struct rfkill *rfkill)
	330	{
	331	}
	332
	333	static inline bool rfkill_set_hw_state(struct rfkill *rfkill, bool blocked)
	334	{
	335	return blocked;
	336	}
	337
	338	static inline bool rfkill_set_sw_state(struct rfkill *rfkill, bool blocked)
	339	{
	340	return blocked;
	341	}
	342
06d5caf4 AJ	343	static inline void rfkill_init_sw_state(struct rfkill *rfkill, bool blocked)
	344	{
	345	}
	346
19d337df JB	347	static inline void rfkill_set_states(struct rfkill *rfkill, bool sw, bool hw)
	348	{
	349	}
	350
6081162e JB	351	static inline bool rfkill_blocked(struct rfkill *rfkill)
	352	{
	353	return false;
	354	}
19d337df JB	355	#endif /* RFKILL \|\| RFKILL_MODULE */
19d337df JB	356
19d337df JB	357	#endif /* __KERNEL__ */
19d337df JB	358
cf4328cd	359	#endif /* RFKILL_H */