Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 68 insertions, 0 deletions

diff --git a/Documentation/userspace-api/media/dvb/fe-set-frontend.rst b/Documentation/userspace-api/media/dvb/fe-set-frontend.rst
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+.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
+.. c:namespace:: DTV.fe
+
+.. _FE_SET_FRONTEND:
+
+***************
+FE_SET_FRONTEND
+***************
+
+.. attention:: This ioctl is deprecated.
+
+Name
+====
+
+FE_SET_FRONTEND
+
+Synopsis
+========
+
+.. c:macro:: FE_SET_FRONTEND
+
+``int ioctl(int fd, FE_SET_FRONTEND, struct dvb_frontend_parameters *p)``
+
+Arguments
+=========
+
+``fd``
+    File descriptor returned by :c:func:`open()`.
+
+``p``
+    Points to parameters for tuning operation.
+
+Description
+===========
+
+This ioctl call starts a tuning operation using specified parameters.
+The result of this call will be successful if the parameters were valid
+and the tuning could be initiated. The result of the tuning operation in
+itself, however, will arrive asynchronously as an event (see
+documentation for :ref:`FE_GET_EVENT` and
+FrontendEvent.) If a new :ref:`FE_SET_FRONTEND`
+operation is initiated before the previous one was completed, the
+previous operation will be aborted in favor of the new one. This command
+requires read/write access to the device.
+
+Return Value
+============
+
+On success 0 is returned.
+
+On error -1 is returned, and the ``errno`` variable is set
+appropriately.
+
+.. tabularcolumns:: |p{2.5cm}|p{15.0cm}|
+
+.. flat-table::
+    :header-rows:  0
+    :stub-columns: 0
+    :widths: 1 16
+
+    -  .. row 1
+
+       -  ``EINVAL``
+
+       -  Maximum supported symbol rate reached.
+
+Generic error codes are described at the
+:ref:`Generic Error Codes <gen-errors>` chapter.