threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
72 lines
1.4 KiB
ReStructuredText
72 lines
1.4 KiB
ReStructuredText
.. -*- coding: utf-8; mode: rst -*-
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.. _FE_SET_FRONTEND:
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***************
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FE_SET_FRONTEND
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***************
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.. attention:: This ioctl is deprecated.
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Name
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====
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FE_SET_FRONTEND
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Synopsis
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========
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.. c:function:: int ioctl(int fd, FE_SET_FRONTEND, struct dvb_frontend_parameters *p)
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:name: FE_SET_FRONTEND
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Arguments
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=========
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``fd``
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File descriptor returned by :c:func:`open() <dvb-fe-open>`.
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``p``
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Points to parameters for tuning operation.
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Description
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===========
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This ioctl call starts a tuning operation using specified parameters.
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The result of this call will be successful if the parameters were valid
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and the tuning could be initiated. The result of the tuning operation in
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itself, however, will arrive asynchronously as an event (see
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documentation for :ref:`FE_GET_EVENT` and
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FrontendEvent.) If a new :ref:`FE_SET_FRONTEND`
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operation is initiated before the previous one was completed, the
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previous operation will be aborted in favor of the new one. This command
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requires read/write access to the device.
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Return Value
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============
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On success 0 is returned.
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On error -1 is returned, and the ``errno`` variable is set
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appropriately.
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.. tabularcolumns:: |p{2.5cm}|p{15.0cm}|
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.. flat-table::
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:header-rows: 0
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:stub-columns: 0
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:widths: 1 16
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- .. row 1
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- ``EINVAL``
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- Maximum supported symbol rate reached.
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Generic error codes are described at the
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:ref:`Generic Error Codes <gen-errors>` chapter.
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