release/src-rt-6.x/linux/linux-2.6/include/linux/rfkill.h

   1 #ifndef __RFKILL_H
   2 #define __RFKILL_H
   3
   4 /*
   5  * Copyright (C) 2006 Ivo van Doorn
   6  * Copyright (C) 2007 Dmitry Torokhov
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the
  20  * Free Software Foundation, Inc.,
  21  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  22  */
  23
  24 #include <linux/types.h>
  25 #include <linux/kernel.h>
  26 #include <linux/list.h>
  27 #include <linux/mutex.h>
  28 #include <linux/device.h>
  29
  30 /**
  31  * enum rfkill_type - type of rfkill switch.
  32  * RFKILL_TYPE_WLAN: switch is no a Wireless network devices.
  33  * RFKILL_TYPE_BlUETOOTH: switch is on a bluetooth device.
  34  * RFKILL_TYPE_IRDA: switch is on an infrared devices.
  35  */
  36 enum rfkill_type {
  37         RFKILL_TYPE_WLAN = 0,
  38         RFKILL_TYPE_BLUETOOTH = 1,
  39         RFKILL_TYPE_IRDA = 2,
  40         RFKILL_TYPE_MAX = 3,
  41 };
  42
  43 enum rfkill_state {
  44         RFKILL_STATE_OFF        = 0,
  45         RFKILL_STATE_ON         = 1,
  46 };
  47
  48 /**
  49  * struct rfkill - rfkill control structure.
  50  * @name: Name of the switch.
  51  * @type: Radio type which the button controls, the value stored
  52  *      here should be a value from enum rfkill_type.
  53  * @state: State of the switch (on/off).
  54  * @user_claim: Set when the switch is controlled exlusively by userspace.
  55  * @mutex: Guards switch state transitions
  56  * @data: Pointer to the RF button drivers private data which will be
  57  *      passed along when toggling radio state.
  58  * @toggle_radio(): Mandatory handler to control state of the radio.
  59  * @dev: Device structure integrating the switch into device tree.
  60  * @node: Used to place switch into list of all switches known to the
  61  *      the system.
  62  *
  63  * This structure represents a RF switch located on a network device.
  64  */
  65 struct rfkill {
  66         const char *name;
  67         enum rfkill_type type;
  68
  69         enum rfkill_state state;
  70         bool user_claim;
  71
  72         struct mutex mutex;
  73
  74         void *data;
  75         int (*toggle_radio)(void *data, enum rfkill_state state);
  76
  77         struct device dev;
  78         struct list_head node;
  79 };
  80 #define to_rfkill(d)    container_of(d, struct rfkill, dev)
  81
  82 struct rfkill *rfkill_allocate(struct device *parent, enum rfkill_type type);
  83 void rfkill_free(struct rfkill *rfkill);
  84 int rfkill_register(struct rfkill *rfkill);
  85 void rfkill_unregister(struct rfkill *rfkill);
  86
  87 void rfkill_switch_all(enum rfkill_type type, enum rfkill_state state);
  88
  89 #endif /* RFKILL_H */