Documentation/media/uapi/rc/lirc-get-features.rst

   1 .. -*- coding: utf-8; mode: rst -*-
   2
   3 .. _lirc_get_features:
   4
   5 ***********************
   6 ioctl LIRC_GET_FEATURES
   7 ***********************
   8
   9 Name
  10 ====
  11
  12 LIRC_GET_FEATURES - Get the underlying hardware device's features
  13
  14 Synopsis
  15 ========
  16
  17 .. cpp:function:: int ioctl( int fd, int request, __u32 *features)
  18
  19 Arguments
  20 =========
  21
  22 ``fd``
  23     File descriptor returned by open().
  24
  25 ``request``
  26     LIRC_GET_FEATURES
  27
  28 ``features``
  29     Bitmask with the LIRC features.
  30
  31
  32 Description
  33 ===========
  34
  35
  36 Get the underlying hardware device's features. If a driver does not
  37 announce support of certain features, calling of the corresponding ioctls
  38 is undefined.
  39
  40 LIRC features
  41 =============
  42
  43 .. _LIRC-CAN-REC-RAW:
  44
  45 ``LIRC_CAN_REC_RAW``
  46
  47     Unused. Kept just to avoid breaking uAPI.
  48
  49 .. _LIRC-CAN-REC-PULSE:
  50
  51 ``LIRC_CAN_REC_PULSE``
  52
  53     The driver is capable of receiving using
  54     :ref:`LIRC_MODE_PULSE <lirc-mode-pulse>`.
  55
  56 .. _LIRC-CAN-REC-MODE2:
  57
  58 ``LIRC_CAN_REC_MODE2``
  59
  60     The driver is capable of receiving using
  61     :ref:`LIRC_MODE_MODE2 <lirc-mode-MODE2>`.
  62
  63 .. _LIRC-CAN-REC-LIRCCODE:
  64
  65 ``LIRC_CAN_REC_LIRCCODE``
  66
  67     The driver is capable of receiving using
  68     :ref:`LIRC_MODE_LIRCCODE <lirc-mode-LIRCCODE>`.
  69
  70 .. _LIRC-CAN-SET-SEND-CARRIER:
  71
  72 ``LIRC_CAN_SET_SEND_CARRIER``
  73
  74     The driver supports changing the modulation frequency via
  75     :ref:`ioctl LIRC_SET_SEND_CARRIER <LIRC_SET_SEND_CARRIER>`.
  76
  77 .. _LIRC-CAN-SET-SEND-DUTY-CYCLE:
  78
  79 ``LIRC_CAN_SET_SEND_DUTY_CYCLE``
  80
  81     The driver supports changing the duty cycle using
  82     :ref:`ioctl LIRC_SET_SEND_DUTY_CYCLE <LIRC_SET_SEND_DUTY_CYCLE>`.
  83
  84 .. _LIRC-CAN-SET-TRANSMITTER-MASK:
  85
  86 ``LIRC_CAN_SET_TRANSMITTER_MASK``
  87
  88     The driver supports changing the active transmitter(s) using
  89     :ref:`ioctl LIRC_SET_TRANSMITTER_MASK <LIRC_SET_TRANSMITTER_MASK>`.
  90
  91 .. _LIRC-CAN-SET-REC-CARRIER:
  92
  93 ``LIRC_CAN_SET_REC_CARRIER``
  94
  95     The driver supports setting the receive carrier frequency using
  96     :ref:`ioctl LIRC_SET_REC_CARRIER <LIRC_SET_REC_CARRIER>`.
  97
  98 .. _LIRC-CAN-SET-REC-DUTY-CYCLE-RANGE:
  99
 100 ``LIRC_CAN_SET_REC_DUTY_CYCLE_RANGE``
 101
 102     Unused. Kept just to avoid breaking uAPI.
 103
 104 .. _LIRC-CAN-SET-REC-CARRIER-RANGE:
 105
 106 ``LIRC_CAN_SET_REC_CARRIER_RANGE``
 107
 108     The driver supports
 109     :ref:`ioctl LIRC_SET_REC_CARRIER_RANGE <LIRC_SET_REC_CARRIER_RANGE>`.
 110
 111 .. _LIRC-CAN-GET-REC-RESOLUTION:
 112
 113 ``LIRC_CAN_GET_REC_RESOLUTION``
 114
 115     The driver supports
 116     :ref:`ioctl LIRC_GET_REC_RESOLUTION <LIRC_GET_REC_RESOLUTION>`.
 117
 118 .. _LIRC-CAN-SET-REC-TIMEOUT:
 119
 120 ``LIRC_CAN_SET_REC_TIMEOUT``
 121
 122     The driver supports
 123     :ref:`ioctl LIRC_SET_REC_TIMEOUT <LIRC_SET_REC_TIMEOUT>`.
 124
 125 .. _LIRC-CAN-SET-REC-FILTER:
 126
 127 ``LIRC_CAN_SET_REC_FILTER``
 128
 129     Unused. Kept just to avoid breaking uAPI.
 130
 131 .. _LIRC-CAN-MEASURE-CARRIER:
 132
 133 ``LIRC_CAN_MEASURE_CARRIER``
 134
 135     The driver supports measuring of the modulation frequency using
 136     :ref:`ioctl LIRC_SET_MEASURE_CARRIER_MODE <LIRC_SET_MEASURE_CARRIER_MODE>`.
 137
 138 .. _LIRC-CAN-USE-WIDEBAND-RECEIVER:
 139
 140 ``LIRC_CAN_USE_WIDEBAND_RECEIVER``
 141
 142     The driver supports learning mode using
 143     :ref:`ioctl LIRC_SET_WIDEBAND_RECEIVER <LIRC_SET_WIDEBAND_RECEIVER>`.
 144
 145 .. _LIRC-CAN-NOTIFY-DECODE:
 146
 147 ``LIRC_CAN_NOTIFY_DECODE``
 148
 149     Unused. Kept just to avoid breaking uAPI.
 150
 151 .. _LIRC-CAN-SEND-RAW:
 152
 153 ``LIRC_CAN_SEND_RAW``
 154
 155     Unused. Kept just to avoid breaking uAPI.
 156
 157 .. _LIRC-CAN-SEND-PULSE:
 158
 159 ``LIRC_CAN_SEND_PULSE``
 160
 161     The driver supports sending using :ref:`LIRC_MODE_PULSE <lirc-mode-pulse>`.
 162
 163 .. _LIRC-CAN-SEND-MODE2:
 164
 165 ``LIRC_CAN_SEND_MODE2``
 166
 167     The driver supports sending using :ref:`LIRC_MODE_MODE2 <lirc-mode-mode2>`.
 168
 169 .. _LIRC-CAN-SEND-LIRCCODE:
 170
 171 ``LIRC_CAN_SEND_LIRCCODE``
 172
 173     The driver supports sending codes (also called as IR blasting or IR TX).
 174
 175
 176 Return Value
 177 ============
 178
 179 On success 0 is returned, on error -1 and the ``errno`` variable is set
 180 appropriately. The generic error codes are described at the
 181 :ref:`Generic Error Codes <gen-errors>` chapter.