908209c160
Once rfkill-input is disabled, the "global" states will only be used as default initial states. Since the states will always be the same after resume, we shouldn't generate events on resume. Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: John W. Linville <linville@tuxdriver.com>
354 lines
11 KiB
C
354 lines
11 KiB
C
#ifndef __RFKILL_H
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#define __RFKILL_H
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/*
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* Copyright (C) 2006 - 2007 Ivo van Doorn
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* Copyright (C) 2007 Dmitry Torokhov
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* Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <linux/types.h>
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/* define userspace visible states */
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#define RFKILL_STATE_SOFT_BLOCKED 0
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#define RFKILL_STATE_UNBLOCKED 1
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#define RFKILL_STATE_HARD_BLOCKED 2
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/**
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* enum rfkill_type - type of rfkill switch.
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*
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* @RFKILL_TYPE_ALL: toggles all switches (userspace only)
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* @RFKILL_TYPE_WLAN: switch is on a 802.11 wireless network device.
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* @RFKILL_TYPE_BLUETOOTH: switch is on a bluetooth device.
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* @RFKILL_TYPE_UWB: switch is on a ultra wideband device.
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* @RFKILL_TYPE_WIMAX: switch is on a WiMAX device.
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* @RFKILL_TYPE_WWAN: switch is on a wireless WAN device.
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* @NUM_RFKILL_TYPES: number of defined rfkill types
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*/
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enum rfkill_type {
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RFKILL_TYPE_ALL = 0,
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RFKILL_TYPE_WLAN,
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RFKILL_TYPE_BLUETOOTH,
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RFKILL_TYPE_UWB,
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RFKILL_TYPE_WIMAX,
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RFKILL_TYPE_WWAN,
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NUM_RFKILL_TYPES,
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};
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/**
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* enum rfkill_operation - operation types
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* @RFKILL_OP_ADD: a device was added
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* @RFKILL_OP_DEL: a device was removed
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* @RFKILL_OP_CHANGE: a device's state changed -- userspace changes one device
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* @RFKILL_OP_CHANGE_ALL: userspace changes all devices (of a type, or all)
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*/
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enum rfkill_operation {
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RFKILL_OP_ADD = 0,
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RFKILL_OP_DEL,
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RFKILL_OP_CHANGE,
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RFKILL_OP_CHANGE_ALL,
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};
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/**
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* struct rfkill_event - events for userspace on /dev/rfkill
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* @idx: index of dev rfkill
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* @type: type of the rfkill struct
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* @op: operation code
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* @hard: hard state (0/1)
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* @soft: soft state (0/1)
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*
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* Structure used for userspace communication on /dev/rfkill,
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* used for events from the kernel and control to the kernel.
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*/
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struct rfkill_event {
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__u32 idx;
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__u8 type;
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__u8 op;
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__u8 soft, hard;
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} __packed;
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/* ioctl for turning off rfkill-input (if present) */
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#define RFKILL_IOC_MAGIC 'R'
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#define RFKILL_IOC_NOINPUT 1
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#define RFKILL_IOCTL_NOINPUT _IO(RFKILL_IOC_MAGIC, RFKILL_IOC_NOINPUT)
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/* and that's all userspace gets */
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#ifdef __KERNEL__
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/* don't allow anyone to use these in the kernel */
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enum rfkill_user_states {
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RFKILL_USER_STATE_SOFT_BLOCKED = RFKILL_STATE_SOFT_BLOCKED,
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RFKILL_USER_STATE_UNBLOCKED = RFKILL_STATE_UNBLOCKED,
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RFKILL_USER_STATE_HARD_BLOCKED = RFKILL_STATE_HARD_BLOCKED,
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};
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#undef RFKILL_STATE_SOFT_BLOCKED
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#undef RFKILL_STATE_UNBLOCKED
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#undef RFKILL_STATE_HARD_BLOCKED
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/list.h>
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#include <linux/mutex.h>
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#include <linux/device.h>
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#include <linux/leds.h>
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#include <linux/err.h>
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/* this is opaque */
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struct rfkill;
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/**
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* struct rfkill_ops - rfkill driver methods
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*
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* @poll: poll the rfkill block state(s) -- only assign this method
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* when you need polling. When called, simply call one of the
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* rfkill_set{,_hw,_sw}_state family of functions. If the hw
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* is getting unblocked you need to take into account the return
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* value of those functions to make sure the software block is
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* properly used.
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* @query: query the rfkill block state(s) and call exactly one of the
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* rfkill_set{,_hw,_sw}_state family of functions. Assign this
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* method if input events can cause hardware state changes to make
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* the rfkill core query your driver before setting a requested
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* block.
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* @set_block: turn the transmitter on (blocked == false) or off
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* (blocked == true) -- ignore and return 0 when hard blocked.
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* This callback must be assigned.
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*/
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struct rfkill_ops {
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void (*poll)(struct rfkill *rfkill, void *data);
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void (*query)(struct rfkill *rfkill, void *data);
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int (*set_block)(void *data, bool blocked);
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};
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#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
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/**
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* rfkill_alloc - allocate rfkill structure
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* @name: name of the struct -- the string is not copied internally
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* @parent: device that has rf switch on it
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* @type: type of the switch (RFKILL_TYPE_*)
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* @ops: rfkill methods
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* @ops_data: data passed to each method
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*
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* This function should be called by the transmitter driver to allocate an
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* rfkill structure. Returns %NULL on failure.
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*/
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struct rfkill * __must_check rfkill_alloc(const char *name,
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struct device *parent,
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const enum rfkill_type type,
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const struct rfkill_ops *ops,
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void *ops_data);
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/**
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* rfkill_register - Register a rfkill structure.
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* @rfkill: rfkill structure to be registered
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*
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* This function should be called by the transmitter driver to register
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* the rfkill structure. Before calling this function the driver needs
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* to be ready to service method calls from rfkill.
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*
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* If the software blocked state is not set before registration,
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* set_block will be called to initialize it to a default value.
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*
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* If the hardware blocked state is not set before registration,
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* it is assumed to be unblocked.
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*/
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int __must_check rfkill_register(struct rfkill *rfkill);
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/**
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* rfkill_pause_polling(struct rfkill *rfkill)
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*
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* Pause polling -- say transmitter is off for other reasons.
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* NOTE: not necessary for suspend/resume -- in that case the
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* core stops polling anyway
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*/
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void rfkill_pause_polling(struct rfkill *rfkill);
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/**
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* rfkill_resume_polling(struct rfkill *rfkill)
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*
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* Pause polling -- say transmitter is off for other reasons.
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* NOTE: not necessary for suspend/resume -- in that case the
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* core stops polling anyway
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*/
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void rfkill_resume_polling(struct rfkill *rfkill);
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/**
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* rfkill_unregister - Unregister a rfkill structure.
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* @rfkill: rfkill structure to be unregistered
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*
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* This function should be called by the network driver during device
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* teardown to destroy rfkill structure. Until it returns, the driver
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* needs to be able to service method calls.
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*/
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void rfkill_unregister(struct rfkill *rfkill);
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/**
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* rfkill_destroy - free rfkill structure
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* @rfkill: rfkill structure to be destroyed
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*
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* Destroys the rfkill structure.
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*/
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void rfkill_destroy(struct rfkill *rfkill);
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/**
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* rfkill_set_hw_state - Set the internal rfkill hardware block state
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* @rfkill: pointer to the rfkill class to modify.
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* @state: the current hardware block state to set
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*
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* rfkill drivers that get events when the hard-blocked state changes
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* use this function to notify the rfkill core (and through that also
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* userspace) of the current state. They should also use this after
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* resume if the state could have changed.
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*
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* You need not (but may) call this function if poll_state is assigned.
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*
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* This function can be called in any context, even from within rfkill
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* callbacks.
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*
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* The function returns the combined block state (true if transmitter
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* should be blocked) so that drivers need not keep track of the soft
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* block state -- which they might not be able to.
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*/
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bool __must_check rfkill_set_hw_state(struct rfkill *rfkill, bool blocked);
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/**
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* rfkill_set_sw_state - Set the internal rfkill software block state
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* @rfkill: pointer to the rfkill class to modify.
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* @state: the current software block state to set
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*
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* rfkill drivers that get events when the soft-blocked state changes
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* (yes, some platforms directly act on input but allow changing again)
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* use this function to notify the rfkill core (and through that also
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* userspace) of the current state. It is not necessary to notify on
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* resume; since hibernation can always change the soft-blocked state,
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* the rfkill core will unconditionally restore the previous state.
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*
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* This function can be called in any context, even from within rfkill
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* callbacks.
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*
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* The function returns the combined block state (true if transmitter
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* should be blocked).
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*/
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bool rfkill_set_sw_state(struct rfkill *rfkill, bool blocked);
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/**
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* rfkill_set_states - Set the internal rfkill block states
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* @rfkill: pointer to the rfkill class to modify.
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* @sw: the current software block state to set
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* @hw: the current hardware block state to set
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*
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* This function can be called in any context, even from within rfkill
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* callbacks.
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*/
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void rfkill_set_states(struct rfkill *rfkill, bool sw, bool hw);
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/**
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* rfkill_blocked - query rfkill block
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*
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* @rfkill: rfkill struct to query
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*/
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bool rfkill_blocked(struct rfkill *rfkill);
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#else /* !RFKILL */
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static inline struct rfkill * __must_check
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rfkill_alloc(const char *name,
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struct device *parent,
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const enum rfkill_type type,
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const struct rfkill_ops *ops,
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void *ops_data)
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{
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return ERR_PTR(-ENODEV);
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}
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static inline int __must_check rfkill_register(struct rfkill *rfkill)
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{
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if (rfkill == ERR_PTR(-ENODEV))
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return 0;
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return -EINVAL;
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}
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static inline void rfkill_pause_polling(struct rfkill *rfkill)
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{
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}
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static inline void rfkill_resume_polling(struct rfkill *rfkill)
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{
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}
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static inline void rfkill_unregister(struct rfkill *rfkill)
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{
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}
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static inline void rfkill_destroy(struct rfkill *rfkill)
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{
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}
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static inline bool rfkill_set_hw_state(struct rfkill *rfkill, bool blocked)
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{
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return blocked;
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}
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static inline bool rfkill_set_sw_state(struct rfkill *rfkill, bool blocked)
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{
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return blocked;
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}
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static inline void rfkill_set_states(struct rfkill *rfkill, bool sw, bool hw)
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{
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}
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static inline bool rfkill_blocked(struct rfkill *rfkill)
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{
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return false;
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}
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#endif /* RFKILL || RFKILL_MODULE */
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#ifdef CONFIG_RFKILL_LEDS
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/**
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* rfkill_get_led_trigger_name - Get the LED trigger name for the button's LED.
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* This function might return a NULL pointer if registering of the
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* LED trigger failed. Use this as "default_trigger" for the LED.
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*/
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const char *rfkill_get_led_trigger_name(struct rfkill *rfkill);
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/**
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* rfkill_set_led_trigger_name -- set the LED trigger name
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* @rfkill: rfkill struct
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* @name: LED trigger name
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*
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* This function sets the LED trigger name of the radio LED
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* trigger that rfkill creates. It is optional, but if called
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* must be called before rfkill_register() to be effective.
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*/
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void rfkill_set_led_trigger_name(struct rfkill *rfkill, const char *name);
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#else
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static inline const char *rfkill_get_led_trigger_name(struct rfkill *rfkill)
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{
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return NULL;
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}
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static inline void
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rfkill_set_led_trigger_name(struct rfkill *rfkill, const char *name)
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{
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}
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#endif
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#endif /* __KERNEL__ */
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#endif /* RFKILL_H */
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