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#ifndef __RFKILL_H
#define __RFKILL_H
/*
* Copyright (C) 2006 - 2007 Ivo van Doorn
* Copyright (C) 2007 Dmitry Torokhov
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/device.h>
#include <linux/leds.h>
/**
* enum rfkill_type - type of rfkill switch.
* 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.
*/
enum rfkill_type {
RFKILL_TYPE_WLAN ,
RFKILL_TYPE_BLUETOOTH,
RFKILL_TYPE_UWB,
RFKILL_TYPE_WIMAX,
RFKILL_TYPE_WWAN,
RFKILL_TYPE_MAX,
};
enum rfkill_state {
RFKILL_STATE_SOFT_BLOCKED = 0, /* Radio output blocked */
RFKILL_STATE_UNBLOCKED = 1, /* Radio output allowed */
RFKILL_STATE_HARD_BLOCKED = 2, /* Output blocked, non-overrideable */
};
/*
* These are DEPRECATED, drivers using them should be verified to
* comply with the rfkill usage guidelines in Documentation/rfkill.txt
* and then converted to use the new names for rfkill_state
*/
#define RFKILL_STATE_OFF RFKILL_STATE_SOFT_BLOCKED
#define RFKILL_STATE_ON RFKILL_STATE_UNBLOCKED
/**
* struct rfkill - rfkill control structure.
* @name: Name of the switch.
* @type: Radio type which the button controls, the value stored
* here should be a value from enum rfkill_type.
* @state: State of the switch, "UNBLOCKED" means radio can operate.
* @user_claim_unsupported: Whether the hardware supports exclusive
* RF-kill control by userspace. Set this before registering.
* @user_claim: Set when the switch is controlled exlusively by userspace.
* @mutex: Guards switch state transitions. It serializes callbacks
* and also protects the state.
* @data: Pointer to the RF button drivers private data which will be
* passed along when toggling radio state.
* @toggle_radio(): Mandatory handler to control state of the radio.
* only RFKILL_STATE_SOFT_BLOCKED and RFKILL_STATE_UNBLOCKED are
* valid parameters.
* @get_state(): handler to read current radio state from hardware,
* may be called from atomic context, should return 0 on success.
* Either this handler OR judicious use of rfkill_force_state() is
* MANDATORY for any driver capable of RFKILL_STATE_HARD_BLOCKED.
* @led_trigger: A LED trigger for this button's LED.
* @dev: Device structure integrating the switch into device tree.
* @node: Used to place switch into list of all switches known to the
* the system.
*
* This structure represents a RF switch located on a network device.
*/
struct rfkill {
const char *name;
enum rfkill_type type;
bool user_claim_unsupported;
bool user_claim;
/* the mutex serializes callbacks and also protects
* the state */
struct mutex mutex;
enum rfkill_state state;
void *data;
int (*toggle_radio)(void *data, enum rfkill_state state);
int (*get_state)(void *data, enum rfkill_state *state);
#ifdef CONFIG_RFKILL_LEDS
struct led_trigger led_trigger;
#endif
struct device dev;
struct list_head node;
};
#define to_rfkill(d) container_of(d, struct rfkill, dev)
struct rfkill *rfkill_allocate(struct device *parent, enum rfkill_type type);
void rfkill_free(struct rfkill *rfkill);
int rfkill_register(struct rfkill *rfkill);
void rfkill_unregister(struct rfkill *rfkill);
int rfkill_force_state(struct rfkill *rfkill, enum rfkill_state state);
/**
* rfkill_state_complement - return complementar state
* @state: state to return the complement of
*
* Returns RFKILL_STATE_SOFT_BLOCKED if @state is RFKILL_STATE_UNBLOCKED,
* returns RFKILL_STATE_UNBLOCKED otherwise.
*/
static inline enum rfkill_state rfkill_state_complement(enum rfkill_state state)
{
return (state == RFKILL_STATE_UNBLOCKED) ?
RFKILL_STATE_SOFT_BLOCKED : RFKILL_STATE_UNBLOCKED;
}
/**
* rfkill_get_led_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.
*/
static inline char *rfkill_get_led_name(struct rfkill *rfkill)
{
#ifdef CONFIG_RFKILL_LEDS
return (char *)(rfkill->led_trigger.name);
#else
return NULL;
#endif
}
/* rfkill notification chain */
#define RFKILL_STATE_CHANGED 0x0001 /* state of a normal rfkill
switch has changed */
int register_rfkill_notifier(struct notifier_block *nb);
int unregister_rfkill_notifier(struct notifier_block *nb);
#endif /* RFKILL_H */
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