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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. c:namespace:: RC .. _lirc_get_features: *********************** ioctl LIRC_GET_FEATURES *********************** Name ==== LIRC_GET_FEATURES - Get the underlying hardware device's features Synopsis ======== .. c:macro:: LIRC_GET_FEATURES ``int ioctl(int fd, LIRC_GET_FEATURES, __u32 *features)`` Arguments ========= ``fd`` File descriptor returned by open(). ``features`` Bitmask with the LIRC features. Description =========== Get the underlying hardware device's features. If a driver does not announce support of certain features, calling of the corresponding ioctls is undefined. LIRC features ============= .. _LIRC-CAN-REC-RAW: ``LIRC_CAN_REC_RAW`` Unused. Kept just to avoid breaking uAPI. .. _LIRC-CAN-REC-PULSE: ``LIRC_CAN_REC_PULSE`` Unused. Kept just to avoid breaking uAPI. :ref:`LIRC_MODE_PULSE <lirc-mode-pulse>` can only be used for transmitting. .. _LIRC-CAN-REC-MODE2: ``LIRC_CAN_REC_MODE2`` This is raw IR driver for receiving. This means that :ref:`LIRC_MODE_MODE2 <lirc-mode-MODE2>` is used. This also implies that :ref:`LIRC_MODE_SCANCODE <lirc-mode-SCANCODE>` is also supported, as long as the kernel is recent enough. Use the :ref:`lirc_set_rec_mode` to switch modes. .. _LIRC-CAN-REC-LIRCCODE: ``LIRC_CAN_REC_LIRCCODE`` Unused. Kept just to avoid breaking uAPI. .. _LIRC-CAN-REC-SCANCODE: ``LIRC_CAN_REC_SCANCODE`` This is a scancode driver for receiving. This means that :ref:`LIRC_MODE_SCANCODE <lirc-mode-SCANCODE>` is used. .. _LIRC-CAN-SET-SEND-CARRIER: ``LIRC_CAN_SET_SEND_CARRIER`` The driver supports changing the modulation frequency via :ref:`ioctl LIRC_SET_SEND_CARRIER <LIRC_SET_SEND_CARRIER>`. .. _LIRC-CAN-SET-SEND-DUTY-CYCLE: ``LIRC_CAN_SET_SEND_DUTY_CYCLE`` The driver supports changing the duty cycle using :ref:`ioctl LIRC_SET_SEND_DUTY_CYCLE <LIRC_SET_SEND_DUTY_CYCLE>`. .. _LIRC-CAN-SET-TRANSMITTER-MASK: ``LIRC_CAN_SET_TRANSMITTER_MASK`` The driver supports changing the active transmitter(s) using :ref:`ioctl LIRC_SET_TRANSMITTER_MASK <LIRC_SET_TRANSMITTER_MASK>`. .. _LIRC-CAN-SET-REC-CARRIER: ``LIRC_CAN_SET_REC_CARRIER`` The driver supports setting the receive carrier frequency using :ref:`ioctl LIRC_SET_REC_CARRIER <LIRC_SET_REC_CARRIER>`. .. _LIRC-CAN-SET-REC-DUTY-CYCLE-RANGE: ``LIRC_CAN_SET_REC_DUTY_CYCLE_RANGE`` Unused. Kept just to avoid breaking uAPI. .. _LIRC-CAN-SET-REC-CARRIER-RANGE: ``LIRC_CAN_SET_REC_CARRIER_RANGE`` The driver supports :ref:`ioctl LIRC_SET_REC_CARRIER_RANGE <LIRC_SET_REC_CARRIER_RANGE>`. .. _LIRC-CAN-GET-REC-RESOLUTION: ``LIRC_CAN_GET_REC_RESOLUTION`` The driver supports :ref:`ioctl LIRC_GET_REC_RESOLUTION <LIRC_GET_REC_RESOLUTION>`. .. _LIRC-CAN-SET-REC-TIMEOUT: ``LIRC_CAN_SET_REC_TIMEOUT`` The driver supports :ref:`ioctl LIRC_SET_REC_TIMEOUT <LIRC_SET_REC_TIMEOUT>`. .. _LIRC-CAN-SET-REC-FILTER: ``LIRC_CAN_SET_REC_FILTER`` Unused. Kept just to avoid breaking uAPI. .. _LIRC-CAN-MEASURE-CARRIER: ``LIRC_CAN_MEASURE_CARRIER`` The driver supports measuring of the modulation frequency using :ref:`ioctl LIRC_SET_MEASURE_CARRIER_MODE <LIRC_SET_MEASURE_CARRIER_MODE>`. .. _LIRC-CAN-USE-WIDEBAND-RECEIVER: ``LIRC_CAN_USE_WIDEBAND_RECEIVER`` The driver supports learning mode using :ref:`ioctl LIRC_SET_WIDEBAND_RECEIVER <LIRC_SET_WIDEBAND_RECEIVER>`. .. _LIRC-CAN-NOTIFY-DECODE: ``LIRC_CAN_NOTIFY_DECODE`` Unused. Kept just to avoid breaking uAPI. .. _LIRC-CAN-SEND-RAW: ``LIRC_CAN_SEND_RAW`` Unused. Kept just to avoid breaking uAPI. .. _LIRC-CAN-SEND-PULSE: ``LIRC_CAN_SEND_PULSE`` The driver supports sending (also called as IR blasting or IR TX) using :ref:`LIRC_MODE_PULSE <lirc-mode-pulse>`. This implies that :ref:`LIRC_MODE_SCANCODE <lirc-mode-SCANCODE>` is also supported for transmit, as long as the kernel is recent enough. Use the :ref:`lirc_set_send_mode` to switch modes. .. _LIRC-CAN-SEND-MODE2: ``LIRC_CAN_SEND_MODE2`` Unused. Kept just to avoid breaking uAPI. :ref:`LIRC_MODE_MODE2 <lirc-mode-mode2>` can only be used for receiving. .. _LIRC-CAN-SEND-LIRCCODE: ``LIRC_CAN_SEND_LIRCCODE`` Unused. Kept just to avoid breaking uAPI. Return Value ============ On success 0 is returned, on error -1 and the ``errno`` variable is set appropriately. The generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter. |