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, 41 insertions, 0 deletions

diff --git a/Documentation/userspace-api/media/v4l/pixfmt-sdr-cu16le.rst b/Documentation/userspace-api/media/v4l/pixfmt-sdr-cu16le.rst
new file mode 100644
index 000000000000..9772b30bda95
--- /dev/null
+++ b/Documentation/userspace-api/media/v4l/pixfmt-sdr-cu16le.rst
@@ -0,0 +1,41 @@
+.. 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
+
+.. _V4L2-SDR-FMT-CU16LE:
+
+****************************
+V4L2_SDR_FMT_CU16LE ('CU16')
+****************************
+
+
+Complex unsigned 16-bit little endian IQ sample
+
+
+Description
+===========
+
+This format contains sequence of complex number samples. Each complex
+number consist two parts, called In-phase and Quadrature (IQ). Both I
+and Q are represented as a 16 bit unsigned little endian number. I value
+comes first and Q value after that.
+
+**Byte Order.**
+Each cell is one byte.
+
+
+.. flat-table::
+    :header-rows:  0
+    :stub-columns: 0
+
+    * - start + 0:
+      - I'\ :sub:`0[7:0]`
+      - I'\ :sub:`0[15:8]`
+    * - start + 2:
+      - Q'\ :sub:`0[7:0]`
+      - Q'\ :sub:`0[15:8]`