Quelle rfkill.h
Sprache: C
/*
* 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 .
*/
#ifndef __RFKILL_H
#define __RFKILL_H
#include <uapi/linux/rfkill.h>
/* 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/leds.h>
#include <linux/err.h>
struct device;
/* 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 ( but will also correctly handle
* the case of polling having been paused before suspend . )
*/
void rfkill_pause_polling(struct rfkill *rfkill);
/**
* rfkill_resume_polling ( struct rfkill * rfkill )
*
* Resume polling
* 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_reason - Set the internal rfkill hardware block state
* with a reason
* @ rfkill : pointer to the rfkill class to modify .
* @ blocked : the current hardware block state to set
* @ reason : one of & enum rfkill_hard_block_reasons
*
* Prefer to use rfkill_set_hw_state if you don ' t need any special reason .
*/
bool rfkill_set_hw_state_reason(struct rfkill *rfkill,
bool blocked,
enum rfkill_hard_block_reasons reason);
/**
* rfkill_set_hw_state - Set the internal rfkill hardware block state
* @ rfkill : pointer to the rfkill class to modify .
* @ blocked : 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 .
*/
static inline bool rfkill_set_hw_state(struct rfkill *rfkill, bool blocked)
{
return rfkill_set_hw_state_reason(rfkill, blocked,
RFKILL_HARD_BLOCK_SIGNAL);
}
/**
* rfkill_set_sw_state - Set the internal rfkill software block state
* @ rfkill : pointer to the rfkill class to modify .
* @ blocked : 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 .
* @ blocked : 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 state
*
* @ rfkill : rfkill struct to query
*/
bool rfkill_blocked(struct rfkill *rfkill);
/**
* rfkill_soft_blocked - Query soft rfkill block state
*
* @ rfkill : rfkill struct to query
*/
bool rfkill_soft_blocked(struct rfkill *rfkill);
/**
* rfkill_find_type - Helper for finding rfkill type by name
* @ name : the name of the type
*
* Returns : enum rfkill_type that corresponds to the name .
*/
enum rfkill_type rfkill_find_type(const char *name);
#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_reason(struct rfkill *rfkill,
bool blocked,
enum rfkill_hard_block_reasons reason)
{
return blocked;
}
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 ;
}
static inline bool rfkill_soft_blocked(struct rfkill *rfkill)
{
return false ;
}
static inline enum rfkill_type rfkill_find_type(const char *name)
{
return RFKILL_TYPE_ALL;
}
#endif /* RFKILL || RFKILL_MODULE */
#ifdef CONFIG_RFKILL_LEDS
/**
* rfkill_get_led_trigger_name - Get the LED trigger name for the button ' s LED .
* This function might return a NULL pointer if registering of the
* LED trigger failed . Use this as " default_trigger " for the LED .
*/
const char *rfkill_get_led_trigger_name(struct rfkill *rfkill);
/**
* rfkill_set_led_trigger_name - Set the LED trigger name
* @ rfkill : rfkill struct
* @ name : LED trigger name
*
* This function sets the LED trigger name of the radio LED
* trigger that rfkill creates . It is optional , but if called
* must be called before rfkill_register ( ) to be effective .
*/
void rfkill_set_led_trigger_name(struct rfkill *rfkill, const char *name);
#else
static inline const char *rfkill_get_led_trigger_name(struct rfkill *rfkill)
{
return NULL;
}
static inline void
rfkill_set_led_trigger_name(struct rfkill *rfkill, const char *name)
{
}
#endif
#endif /* RFKILL_H */
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(vorverarbeitet am 2026-09-29)
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*© Formatika GbR, Deutschland
2026-10-10
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