1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
#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 */
RFKILL_STATE_MAX, /* marker for last valid state */
};
/*
* 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;
enum rfkill_state state_for_resume;
};
#define to_rfkill(d) container_of(d, struct rfkill, dev)
struct rfkill * __must_check rfkill_allocate(struct device *parent,
enum rfkill_type type);
void rfkill_free(struct rfkill *rfkill);
int __must_check rfkill_register(struct rfkill *rfkill);
void rfkill_unregister(struct rfkill *rfkill);
int rfkill_force_state(struct rfkill *rfkill, enum rfkill_state state);
int rfkill_set_default(enum rfkill_type type, 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 */
|
