linux/Documentation/userspace-api/media/dvb/fe-diseqc-recv-slave-reply.rst

.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: DTV.fe

.. _FE_DISEQC_RECV_SLAVE_REPLY:

********************************
ioctl FE_DISEQC_RECV_SLAVE_REPLY
********************************

Name
====

FE_DISEQC_RECV_SLAVE_REPLY - Receives reply from a DiSEqC 2.0 command

Synopsis
========

.. c:macro:: FE_DISEQC_RECV_SLAVE_REPLY

``int ioctl(int fd, FE_DISEQC_RECV_SLAVE_REPLY, struct dvb_diseqc_slave_reply *argp)``

Arguments
=========

``fd``
    File descriptor returned by :c:func:`open()`.

``argp``
    pointer to struct :c:type:`dvb_diseqc_slave_reply`.

Description
===========

Receives reply from a DiSEqC 2.0 command.

The received message is stored at the buffer pointed by ``argp``.

Return Value
============

On success 0 is returned.

On error -1 is returned, and the ``errno`` variable is set
appropriately.

Generic error codes are described at the
:ref:`Generic Error Codes <gen-errors>` chapter.
media: docs: use the new SPDX header for GFDL-1.1 on *.rst files SPDX v3.10 gained support for GFDL-1.1 with no invariant sections: https://spdx.org/licenses/GFDL-1.1-no-invariants-or-later.html So, remove the license text, replacing them by this new SPDX license. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> 2020-08-26 15:03:09 +08:00			`.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later`
media: docs: make DVB documents more compatible with Sphinx 3.1+ Sphinx 3.x broke support for the cdomain.py extension, as the c domain code was rewritten. Due to that, the c tags need to be re-written, in order to use the new c domain notation. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> 2020-09-24 22:56:00 +08:00			`.. c:namespace:: DTV.fe`
media: add SPDX header to media uAPI files All those files are under GFDL 1.1 or later, with no invariant sections. Tag them as such. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> 2018-08-30 22:15:26 +08:00
doc-rst: linux_tv DocBook to reST migration (docs-next) This is the restructuredText (reST) migration of the ``media`` DocBook-XML set from the linux_tv project. Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> 2016-06-30 21:18:56 +08:00			`.. _FE_DISEQC_RECV_SLAVE_REPLY:`

			`********************************`
			`ioctl FE_DISEQC_RECV_SLAVE_REPLY`
			`********************************`

doc-rst: linux_tv: don't use uppercases for syscall sections On the syscall conversions, we used uppercase for the sections, but this is too bold. So, convert them to Camel Case, as it looks visually better. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> 2016-07-06 02:14:35 +08:00			`Name`
doc-rst: linux_tv: reformat all syscall pages The syscall pages are written to be used also as man-pages. However, they don't match the format used by kernel-doc generated pages from DocBook. Rewrite them to match it. One side effect is that now all such pages at the book will have the same format, reducing the format differences between DVB and the other parts of the book. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> 2016-07-05 18:58:48 +08:00			`====`
doc-rst: linux_tv DocBook to reST migration (docs-next) This is the restructuredText (reST) migration of the ``media`` DocBook-XML set from the linux_tv project. Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> 2016-06-30 21:18:56 +08:00
doc-rst: linux_tv: reformat all syscall pages The syscall pages are written to be used also as man-pages. However, they don't match the format used by kernel-doc generated pages from DocBook. Rewrite them to match it. One side effect is that now all such pages at the book will have the same format, reducing the format differences between DVB and the other parts of the book. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> 2016-07-05 18:58:48 +08:00			`FE_DISEQC_RECV_SLAVE_REPLY - Receives reply from a DiSEqC 2.0 command`
doc-rst: linux_tv DocBook to reST migration (docs-next) This is the restructuredText (reST) migration of the ``media`` DocBook-XML set from the linux_tv project. Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> 2016-06-30 21:18:56 +08:00
doc-rst: linux_tv: don't use uppercases for syscall sections On the syscall conversions, we used uppercase for the sections, but this is too bold. So, convert them to Camel Case, as it looks visually better. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> 2016-07-06 02:14:35 +08:00			`Synopsis`
doc-rst: linux_tv DocBook to reST migration (docs-next) This is the restructuredText (reST) migration of the ``media`` DocBook-XML set from the linux_tv project. Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> 2016-06-30 21:18:56 +08:00			`========`

media: docs: make DVB documents more compatible with Sphinx 3.1+ Sphinx 3.x broke support for the cdomain.py extension, as the c domain code was rewritten. Due to that, the c tags need to be re-written, in order to use the new c domain notation. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> 2020-09-24 22:56:00 +08:00			`.. c:macro:: FE_DISEQC_RECV_SLAVE_REPLY`
doc-rst: linux_tv DocBook to reST migration (docs-next) This is the restructuredText (reST) migration of the ``media`` DocBook-XML set from the linux_tv project. Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> 2016-06-30 21:18:56 +08:00
media: docs: make DVB documents more compatible with Sphinx 3.1+ Sphinx 3.x broke support for the cdomain.py extension, as the c domain code was rewritten. Due to that, the c tags need to be re-written, in order to use the new c domain notation. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> 2020-09-24 22:56:00 +08:00			``int ioctl(int fd, FE_DISEQC_RECV_SLAVE_REPLY, struct dvb_diseqc_slave_reply *argp)``
doc-rst: linux_tv: reformat all syscall pages The syscall pages are written to be used also as man-pages. However, they don't match the format used by kernel-doc generated pages from DocBook. Rewrite them to match it. One side effect is that now all such pages at the book will have the same format, reducing the format differences between DVB and the other parts of the book. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> 2016-07-05 18:58:48 +08:00
doc-rst: linux_tv: don't use uppercases for syscall sections On the syscall conversions, we used uppercase for the sections, but this is too bold. So, convert them to Camel Case, as it looks visually better. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> 2016-07-06 02:14:35 +08:00			`Arguments`
doc-rst: linux_tv DocBook to reST migration (docs-next) This is the restructuredText (reST) migration of the ``media`` DocBook-XML set from the linux_tv project. Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> 2016-06-30 21:18:56 +08:00			`=========`

			``fd``
media: docs: make DVB documents more compatible with Sphinx 3.1+ Sphinx 3.x broke support for the cdomain.py extension, as the c domain code was rewritten. Due to that, the c tags need to be re-written, in order to use the new c domain notation. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> 2020-09-24 22:56:00 +08:00			File descriptor returned by :c:func:`open()`.
doc-rst: linux_tv DocBook to reST migration (docs-next) This is the restructuredText (reST) migration of the ``media`` DocBook-XML set from the linux_tv project. Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> 2016-06-30 21:18:56 +08:00
			``argp``
media: dvb frontend docs: use kernel-doc documentation Now that frontend.h contains most documentation for the frontend, remove the duplicated information from Documentation/ and use the kernel-doc auto-generated one instead. That should simplify maintainership of DVB frontend uAPI, as most of the documentation will stick with the header file. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> 2017-08-31 01:45:20 +08:00			pointer to struct :c:type:`dvb_diseqc_slave_reply`.
doc-rst: linux_tv DocBook to reST migration (docs-next) This is the restructuredText (reST) migration of the ``media`` DocBook-XML set from the linux_tv project. Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> 2016-06-30 21:18:56 +08:00
doc-rst: linux_tv: don't use uppercases for syscall sections On the syscall conversions, we used uppercase for the sections, but this is too bold. So, convert them to Camel Case, as it looks visually better. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> 2016-07-06 02:14:35 +08:00			`Description`
doc-rst: linux_tv DocBook to reST migration (docs-next) This is the restructuredText (reST) migration of the ``media`` DocBook-XML set from the linux_tv project. Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> 2016-06-30 21:18:56 +08:00			`===========`

			`Receives reply from a DiSEqC 2.0 command.`

media: dvb frontend docs: use kernel-doc documentation Now that frontend.h contains most documentation for the frontend, remove the duplicated information from Documentation/ and use the kernel-doc auto-generated one instead. That should simplify maintainership of DVB frontend uAPI, as most of the documentation will stick with the header file. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> 2017-08-31 01:45:20 +08:00			The received message is stored at the buffer pointed by ``argp``.
doc-rst: linux_tv: don't use uppercases for syscall sections On the syscall conversions, we used uppercase for the sections, but this is too bold. So, convert them to Camel Case, as it looks visually better. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> 2016-07-06 02:14:35 +08:00
			`Return Value`
doc-rst: linux_tv: dvb: put return value at the end On some syscall descriptions, the tables are described after the return value. Do that inside descriptions. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> 2016-07-05 22:36:55 +08:00			`============`

media: dvb uAPI docs: adjust return value ioctl descriptions There are several issues on the return value for ioctls: - Text is confusing; - Some error codes don't exist; - The non-generic error codes should come before the text that points to the generic error codes; - Tables don't contain column size hints; - Some references are not marked as such. Correct them. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> 2017-09-02 00:15:43 +08:00			`On success 0 is returned.`

			On error -1 is returned, and the ``errno`` variable is set
			`appropriately.`

			`Generic error codes are described at the`
doc-rst: linux_tv: dvb: put return value at the end On some syscall descriptions, the tables are described after the return value. Do that inside descriptions. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> 2016-07-05 22:36:55 +08:00			:ref:`Generic Error Codes <gen-errors>` chapter.