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85 lines
2.0 KiB
ReStructuredText
85 lines
2.0 KiB
ReStructuredText
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.. -*- 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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DESCRIPTION
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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 <FE_GET_EVENT>` and
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FrontendEvent.) If a new :ref:`FE_SET_FRONTEND <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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SYNOPSIS
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int ioctl(int fd, int request =
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:ref:`FE_SET_FRONTEND <FE_SET_FRONTEND>`, struct
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dvb_frontend_parameters *p);
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PARAMETERS
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.. flat-table::
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:header-rows: 0
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:stub-columns: 0
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- .. row 1
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- int fd
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- File descriptor returned by a previous call to open().
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- .. row 2
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- int request
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- Equals :ref:`FE_SET_FRONTEND <FE_SET_FRONTEND>` for this
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command.
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- .. row 3
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- struct dvb_frontend_parameters *p
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- Points to parameters for tuning operation.
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RETURN VALUE
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On success 0 is returned, on error -1 and the ``errno`` variable is set
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appropriately. The generic error codes are described at the
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:ref:`Generic Error Codes <gen-errors>` chapter.
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.. flat-table::
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:header-rows: 0
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:stub-columns: 0
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- .. row 1
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- EINVAL
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- Maximum supported symbol rate reached.
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.. ------------------------------------------------------------------------------
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.. This file was automatically converted from DocBook-XML with the dbxml
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.. library (https://github.com/return42/sphkerneldoc). The origin XML comes
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.. from the linux kernel, refer to:
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..
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.. * https://github.com/torvalds/linux/tree/master/Documentation/DocBook
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.. ------------------------------------------------------------------------------
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