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Diffstat (limited to 'Documentation/media/uapi/rc/lirc-write.rst')
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diff --git a/Documentation/media/uapi/rc/lirc-write.rst b/Documentation/media/uapi/rc/lirc-write.rst deleted file mode 100644 index 2aad0fef4a5b..000000000000 --- a/Documentation/media/uapi/rc/lirc-write.rst +++ /dev/null @@ -1,63 +0,0 @@ -.. -*- coding: utf-8; mode: rst -*- - -.. _lirc-write: - -************ -LIRC write() -************ - -Name -==== - -lirc-write - Write to a LIRC device - - -Synopsis -======== - -.. code-block:: c - - #include <unistd.h> - - -.. c:function:: ssize_t write( int fd, void *buf, size_t count ) - :name: lirc-write - -Arguments -========= - -``fd`` - File descriptor returned by ``open()``. - -``buf`` - Buffer with data to be written - -``count`` - Number of bytes at the buffer - -Description -=========== - -:ref:`write() <lirc-write>` writes up to ``count`` bytes to the device -referenced by the file descriptor ``fd`` from the buffer starting at -``buf``. - -The exact format of the data depends on what mode a driver uses, use -:ref:`lirc_get_features` to get the supported mode. - -When in :ref:`LIRC_MODE_PULSE <lirc-mode-PULSE>` mode, the data written to -the chardev is a pulse/space sequence of integer values. Pulses and spaces -are only marked implicitly by their position. The data must start and end -with a pulse, therefore, the data must always include an uneven number of -samples. The write function must block until the data has been transmitted -by the hardware. If more data is provided than the hardware can send, the -driver returns ``EINVAL``. - -Return Value -============ - -On success, the number of bytes read is returned. It is not an error if -this number is smaller than the number of bytes requested, or the amount -of data required for one frame. On error, -1 is returned, and the ``errno`` -variable is set appropriately. The generic error codes are described at the -:ref:`Generic Error Codes <gen-errors>` chapter. |
