media: docs: move uAPI book to userspace-api/media

Since 2017, there is an space reserved for userspace API,
created by changeset 1d596dee3862 ("docs: Create a user-space API guide").

As the media subsystem was one of the first subsystems to use
Sphinx, until this patch, we were keeping things on a separate
place.

Let's just use the new location, as having all uAPI altogether
will likely make things easier for developers.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

1 files changed, 82 insertions, 0 deletions

diff --git a/Documentation/userspace-api/media/dvb/frontend-property-cable-systems.rst b/Documentation/userspace-api/media/dvb/frontend-property-cable-systems.rst
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+.. Permission is granted to copy, distribute and/or modify this
+.. document under the terms of the GNU Free Documentation License,
+.. Version 1.1 or any later version published by the Free Software
+.. Foundation, with no Invariant Sections, no Front-Cover Texts
+.. and no Back-Cover Texts. A copy of the license is included at
+.. Documentation/userspace-api/media/fdl-appendix.rst.
+..
+.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
+
+.. _frontend-property-cable-systems:
+
+*****************************************
+Properties used on cable delivery systems
+*****************************************
+
+
+.. _dvbc-params:
+
+DVB-C delivery system
+=====================
+
+The DVB-C Annex-A is the widely used cable standard. Transmission uses
+QAM modulation.
+
+The DVB-C Annex-C is optimized for 6MHz, and is used in Japan. It
+supports a subset of the Annex A modulation types, and a roll-off of
+0.13, instead of 0.15
+
+The following parameters are valid for DVB-C Annex A/C:
+
+-  :ref:`DTV_API_VERSION <DTV-API-VERSION>`
+
+-  :ref:`DTV_DELIVERY_SYSTEM <DTV-DELIVERY-SYSTEM>`
+
+-  :ref:`DTV_TUNE <DTV-TUNE>`
+
+-  :ref:`DTV_CLEAR <DTV-CLEAR>`
+
+-  :ref:`DTV_FREQUENCY <DTV-FREQUENCY>`
+
+-  :ref:`DTV_MODULATION <DTV-MODULATION>`
+
+-  :ref:`DTV_INVERSION <DTV-INVERSION>`
+
+-  :ref:`DTV_SYMBOL_RATE <DTV-SYMBOL-RATE>`
+
+-  :ref:`DTV_INNER_FEC <DTV-INNER-FEC>`
+
+-  :ref:`DTV_LNA <DTV-LNA>`
+
+In addition, the :ref:`DTV QoS statistics <frontend-stat-properties>`
+are also valid.
+
+
+.. _dvbc-annex-b-params:
+
+DVB-C Annex B delivery system
+=============================
+
+The DVB-C Annex-B is only used on a few Countries like the United
+States.
+
+The following parameters are valid for DVB-C Annex B:
+
+-  :ref:`DTV_API_VERSION <DTV-API-VERSION>`
+
+-  :ref:`DTV_DELIVERY_SYSTEM <DTV-DELIVERY-SYSTEM>`
+
+-  :ref:`DTV_TUNE <DTV-TUNE>`
+
+-  :ref:`DTV_CLEAR <DTV-CLEAR>`
+
+-  :ref:`DTV_FREQUENCY <DTV-FREQUENCY>`
+
+-  :ref:`DTV_MODULATION <DTV-MODULATION>`
+
+-  :ref:`DTV_INVERSION <DTV-INVERSION>`
+
+-  :ref:`DTV_LNA <DTV-LNA>`
+
+In addition, the :ref:`DTV QoS statistics <frontend-stat-properties>`
+are also valid.