cregit-Linux how code gets into the kernel

Release 4.12 include/linux/rfkill.h

Directory: include/linux
/*
 * 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)
 *
 * 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);

/**
 * rfkill_find_type - Helpper for finding rfkill type by name
 * @name: the name of the type
 *
 * Returns enum rfkill_type that conrresponds 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); }

Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg3583.33%150.00%
Henrique de Moraes Holschuh716.67%150.00%
Total42100.00%2100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg2790.00%150.00%
Henrique de Moraes Holschuh310.00%150.00%
Total30100.00%2100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg11100.00%1100.00%
Total11100.00%1100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg872.73%150.00%
Michael Büsch327.27%150.00%
Total11100.00%2100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Michael Büsch654.55%150.00%
Johannes Berg545.45%150.00%
Total11100.00%2100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg11100.00%1100.00%
Total11100.00%1100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg18100.00%1100.00%
Total18100.00%1100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg1794.44%150.00%
Michael Büsch15.56%150.00%
Total18100.00%2100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Alan Jenkins14100.00%1100.00%
Total14100.00%1100.00%


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

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PersonTokensPropCommitsCommitProp
Johannes Berg17100.00%1100.00%
Total17100.00%1100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg15100.00%1100.00%
Total15100.00%1100.00%


static inline enum rfkill_type rfkill_find_type(const char *name) { return RFKILL_TYPE_ALL; }

Contributors

PersonTokensPropCommitsCommitProp
Heikki Krogerus16100.00%1100.00%
Total16100.00%1100.00%

#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; }

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PersonTokensPropCommitsCommitProp
AceLan Kao17100.00%1100.00%
Total17100.00%1100.00%


static inline void rfkill_set_led_trigger_name(struct rfkill *rfkill, const char *name) { }

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AceLan Kao16100.00%1100.00%
Total16100.00%1100.00%

#endif #endif /* RFKILL_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg32657.09%527.78%
Ivo van Doorn7412.96%15.56%
AceLan Kao6711.73%15.56%
Henrique de Moraes Holschuh315.43%422.22%
Alan Jenkins305.25%316.67%
Heikki Krogerus274.73%15.56%
Michael Büsch111.93%15.56%
Paul Gortmaker30.53%15.56%
David Howells20.35%15.56%
Total571100.00%18100.00%
Directory: include/linux
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