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1 | #ifndef __RFKILL_H |
2 | #define __RFKILL_H | |
3 | ||
4 | /* | |
fe242cfd | 5 | * Copyright (C) 2006 - 2007 Ivo van Doorn |
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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> | |
135900c1 | 29 | #include <linux/leds.h> |
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30 | |
31 | /** | |
32 | * enum rfkill_type - type of rfkill switch. | |
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33 | * RFKILL_TYPE_WLAN: switch is on a 802.11 wireless network device. |
34 | * RFKILL_TYPE_BLUETOOTH: switch is on a bluetooth device. | |
35 | * RFKILL_TYPE_UWB: switch is on a ultra wideband device. | |
303d9bf6 | 36 | * RFKILL_TYPE_WIMAX: switch is on a WiMAX device. |
477576a0 | 37 | * RFKILL_TYPE_WWAN: switch is on a wireless WAN device. |
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38 | */ |
39 | enum rfkill_type { | |
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40 | RFKILL_TYPE_WLAN , |
41 | RFKILL_TYPE_BLUETOOTH, | |
e0665486 | 42 | RFKILL_TYPE_UWB, |
303d9bf6 | 43 | RFKILL_TYPE_WIMAX, |
477576a0 | 44 | RFKILL_TYPE_WWAN, |
234a0ca6 | 45 | RFKILL_TYPE_MAX, |
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46 | }; |
47 | ||
48 | enum rfkill_state { | |
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49 | RFKILL_STATE_SOFT_BLOCKED = 0, /* Radio output blocked */ |
50 | RFKILL_STATE_UNBLOCKED = 1, /* Radio output allowed */ | |
51 | RFKILL_STATE_HARD_BLOCKED = 2, /* Output blocked, non-overrideable */ | |
96c87607 | 52 | RFKILL_STATE_MAX, /* marker for last valid state */ |
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53 | }; |
54 | ||
55 | /** | |
56 | * struct rfkill - rfkill control structure. | |
57 | * @name: Name of the switch. | |
58 | * @type: Radio type which the button controls, the value stored | |
59 | * here should be a value from enum rfkill_type. | |
5005657c | 60 | * @state: State of the switch, "UNBLOCKED" means radio can operate. |
f1b23361 HMH |
61 | * @mutex: Guards switch state transitions. It serializes callbacks |
62 | * and also protects the state. | |
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63 | * @data: Pointer to the RF button drivers private data which will be |
64 | * passed along when toggling radio state. | |
65 | * @toggle_radio(): Mandatory handler to control state of the radio. | |
5005657c HMH |
66 | * only RFKILL_STATE_SOFT_BLOCKED and RFKILL_STATE_UNBLOCKED are |
67 | * valid parameters. | |
801e49af HMH |
68 | * @get_state(): handler to read current radio state from hardware, |
69 | * may be called from atomic context, should return 0 on success. | |
5005657c HMH |
70 | * Either this handler OR judicious use of rfkill_force_state() is |
71 | * MANDATORY for any driver capable of RFKILL_STATE_HARD_BLOCKED. | |
135900c1 | 72 | * @led_trigger: A LED trigger for this button's LED. |
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73 | * @dev: Device structure integrating the switch into device tree. |
74 | * @node: Used to place switch into list of all switches known to the | |
75 | * the system. | |
76 | * | |
77 | * This structure represents a RF switch located on a network device. | |
78 | */ | |
79 | struct rfkill { | |
c36befb5 | 80 | const char *name; |
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81 | enum rfkill_type type; |
82 | ||
f1b23361 HMH |
83 | /* the mutex serializes callbacks and also protects |
84 | * the state */ | |
cf4328cd | 85 | struct mutex mutex; |
f1b23361 | 86 | enum rfkill_state state; |
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87 | void *data; |
88 | int (*toggle_radio)(void *data, enum rfkill_state state); | |
801e49af | 89 | int (*get_state)(void *data, enum rfkill_state *state); |
cf4328cd | 90 | |
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91 | #ifdef CONFIG_RFKILL_LEDS |
92 | struct led_trigger led_trigger; | |
93 | #endif | |
94 | ||
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95 | struct device dev; |
96 | struct list_head node; | |
f80b5e99 | 97 | enum rfkill_state state_for_resume; |
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98 | }; |
99 | #define to_rfkill(d) container_of(d, struct rfkill, dev) | |
100 | ||
77fba13c HMH |
101 | struct rfkill * __must_check rfkill_allocate(struct device *parent, |
102 | enum rfkill_type type); | |
cf4328cd | 103 | void rfkill_free(struct rfkill *rfkill); |
77fba13c | 104 | int __must_check rfkill_register(struct rfkill *rfkill); |
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105 | void rfkill_unregister(struct rfkill *rfkill); |
106 | ||
801e49af | 107 | int rfkill_force_state(struct rfkill *rfkill, enum rfkill_state state); |
99619201 | 108 | int rfkill_set_default(enum rfkill_type type, enum rfkill_state state); |
801e49af | 109 | |
5005657c HMH |
110 | /** |
111 | * rfkill_state_complement - return complementar state | |
112 | * @state: state to return the complement of | |
113 | * | |
114 | * Returns RFKILL_STATE_SOFT_BLOCKED if @state is RFKILL_STATE_UNBLOCKED, | |
115 | * returns RFKILL_STATE_UNBLOCKED otherwise. | |
116 | */ | |
117 | static inline enum rfkill_state rfkill_state_complement(enum rfkill_state state) | |
118 | { | |
119 | return (state == RFKILL_STATE_UNBLOCKED) ? | |
120 | RFKILL_STATE_SOFT_BLOCKED : RFKILL_STATE_UNBLOCKED; | |
121 | } | |
122 | ||
135900c1 MB |
123 | /** |
124 | * rfkill_get_led_name - Get the LED trigger name for the button's LED. | |
125 | * This function might return a NULL pointer if registering of the | |
126 | * LED trigger failed. | |
127 | * Use this as "default_trigger" for the LED. | |
128 | */ | |
129 | static inline char *rfkill_get_led_name(struct rfkill *rfkill) | |
130 | { | |
131 | #ifdef CONFIG_RFKILL_LEDS | |
132 | return (char *)(rfkill->led_trigger.name); | |
133 | #else | |
134 | return NULL; | |
135 | #endif | |
136 | } | |
137 | ||
cf4328cd | 138 | #endif /* RFKILL_H */ |