1 .. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.
2 .. c:namespace:: RC
3
4 .. _lirc_get_features:
5
6 ***********************
7 ioctl LIRC_GET_FEATURES
8 ***********************
9
10 Name
11 ====
12
13 LIRC_GET_FEATURES - Get the underlying hardwar
14
15 Synopsis
16 ========
17
18 .. c:macro:: LIRC_GET_FEATURES
19
20 ``int ioctl(int fd, LIRC_GET_FEATURES, __u32 *
21
22 Arguments
23 =========
24
25 ``fd``
26 File descriptor returned by open().
27
28 ``features``
29 Bitmask with the LIRC features.
30
31 Description
32 ===========
33
34 Get the underlying hardware device's features.
35 announce support of certain features, calling
36 is undefined.
37
38 LIRC features
39 =============
40
41 .. _LIRC-CAN-REC-RAW:
42
43 ``LIRC_CAN_REC_RAW``
44
45 Unused. Kept just to avoid breaking uAPI.
46
47 .. _LIRC-CAN-REC-PULSE:
48
49 ``LIRC_CAN_REC_PULSE``
50
51 Unused. Kept just to avoid breaking uAPI.
52 :ref:`LIRC_MODE_PULSE <lirc-mode-pulse>` c
53
54 .. _LIRC-CAN-REC-MODE2:
55
56 ``LIRC_CAN_REC_MODE2``
57
58 This is raw IR driver for receiving. This
59 :ref:`LIRC_MODE_MODE2 <lirc-mode-MODE2>` i
60 that :ref:`LIRC_MODE_SCANCODE <lirc-mode-S
61 as long as the kernel is recent enough. Us
62 :ref:`lirc_set_rec_mode` to switch modes.
63
64 .. _LIRC-CAN-REC-LIRCCODE:
65
66 ``LIRC_CAN_REC_LIRCCODE``
67
68 Unused. Kept just to avoid breaking uAPI.
69
70 .. _LIRC-CAN-REC-SCANCODE:
71
72 ``LIRC_CAN_REC_SCANCODE``
73
74 This is a scancode driver for receiving. T
75 :ref:`LIRC_MODE_SCANCODE <lirc-mode-SCANCO
76
77 .. _LIRC-CAN-SET-SEND-CARRIER:
78
79 ``LIRC_CAN_SET_SEND_CARRIER``
80
81 The driver supports changing the modulatio
82 :ref:`ioctl LIRC_SET_SEND_CARRIER <LIRC_SE
83
84 .. _LIRC-CAN-SET-SEND-DUTY-CYCLE:
85
86 ``LIRC_CAN_SET_SEND_DUTY_CYCLE``
87
88 The driver supports changing the duty cycl
89 :ref:`ioctl LIRC_SET_SEND_DUTY_CYCLE <LIRC
90
91 .. _LIRC-CAN-SET-TRANSMITTER-MASK:
92
93 ``LIRC_CAN_SET_TRANSMITTER_MASK``
94
95 The driver supports changing the active tr
96 :ref:`ioctl LIRC_SET_TRANSMITTER_MASK <LIR
97
98 .. _LIRC-CAN-SET-REC-CARRIER:
99
100 ``LIRC_CAN_SET_REC_CARRIER``
101
102 The driver supports setting the receive ca
103 :ref:`ioctl LIRC_SET_REC_CARRIER <LIRC_SET
104
105 .. _LIRC-CAN-SET-REC-CARRIER-RANGE:
106
107 ``LIRC_CAN_SET_REC_CARRIER_RANGE``
108
109 The driver supports
110 :ref:`ioctl LIRC_SET_REC_CARRIER_RANGE <LI
111
112 .. _LIRC-CAN-GET-REC-RESOLUTION:
113
114 ``LIRC_CAN_GET_REC_RESOLUTION``
115
116 The driver supports
117 :ref:`ioctl LIRC_GET_REC_RESOLUTION <LIRC_
118
119 .. _LIRC-CAN-SET-REC-TIMEOUT:
120
121 ``LIRC_CAN_SET_REC_TIMEOUT``
122
123 The driver supports
124 :ref:`ioctl LIRC_SET_REC_TIMEOUT <LIRC_SET
125
126 .. _LIRC-CAN-MEASURE-CARRIER:
127
128 ``LIRC_CAN_MEASURE_CARRIER``
129
130 The driver supports measuring of the modul
131 :ref:`ioctl LIRC_SET_MEASURE_CARRIER_MODE
132
133 .. _LIRC-CAN-USE-WIDEBAND-RECEIVER:
134
135 ``LIRC_CAN_USE_WIDEBAND_RECEIVER``
136
137 The driver supports learning mode using
138 :ref:`ioctl LIRC_SET_WIDEBAND_RECEIVER <LI
139
140 .. _LIRC-CAN-SEND-RAW:
141
142 ``LIRC_CAN_SEND_RAW``
143
144 Unused. Kept just to avoid breaking uAPI.
145
146 .. _LIRC-CAN-SEND-PULSE:
147
148 ``LIRC_CAN_SEND_PULSE``
149
150 The driver supports sending (also called a
151 :ref:`LIRC_MODE_PULSE <lirc-mode-pulse>`.
152 :ref:`LIRC_MODE_SCANCODE <lirc-mode-SCANCO
153 transmit, as long as the kernel is recent
154 :ref:`lirc_set_send_mode` to switch modes.
155
156 .. _LIRC-CAN-SEND-MODE2:
157
158 ``LIRC_CAN_SEND_MODE2``
159
160 Unused. Kept just to avoid breaking uAPI.
161 :ref:`LIRC_MODE_MODE2 <lirc-mode-mode2>` c
162
163 .. _LIRC-CAN-SEND-LIRCCODE:
164
165 ``LIRC_CAN_SEND_LIRCCODE``
166
167 Unused. Kept just to avoid breaking uAPI.
168
169 Return Value
170 ============
171
172 On success 0 is returned, on error -1 and the
173 appropriately. The generic error codes are des
174 :ref:`Generic Error Codes <gen-errors>` chapte
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