doc_rst: rename the media Sphinx suff to Documentation/media

The name of the subsystem is "media", and not "linux_tv". Also,
as we plan to add other stuff there in the future, let's
rename also the media uAPI book to media_uapi, to make it
clearer.

No functional changes.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

1 files changed, 254 insertions, 0 deletions

diff --git a/Documentation/media/uapi/v4l/pixfmt-yuv420m.rst b/Documentation/media/uapi/v4l/pixfmt-yuv420m.rst
new file mode 100644
index 000000000000..4dab85090d7d
--- /dev/null
+++ b/Documentation/media/uapi/v4l/pixfmt-yuv420m.rst
@@ -0,0 +1,254 @@
+.. -*- coding: utf-8; mode: rst -*-
+
+.. _V4L2-PIX-FMT-YUV420M:
+.. _v4l2-pix-fmt-yvu420m:
+
+************************************************************
+V4L2_PIX_FMT_YUV420M ('YM12'), V4L2_PIX_FMT_YVU420M ('YM21')
+************************************************************
+
+*man V4L2_PIX_FMT_YUV420M(2)*
+
+V4L2_PIX_FMT_YVU420M
+Variation of ``V4L2_PIX_FMT_YUV420`` and ``V4L2_PIX_FMT_YVU420`` with
+planes non contiguous in memory.
+
+
+Description
+===========
+
+This is a multi-planar format, as opposed to a packed format. The three
+components are separated into three sub-images or planes.
+
+The Y plane is first. The Y plane has one byte per pixel. For
+``V4L2_PIX_FMT_YUV420M`` the Cb data constitutes the second plane which
+is half the width and half the height of the Y plane (and of the image).
+Each Cb belongs to four pixels, a two-by-two square of the image. For
+example, Cb\ :sub:`0` belongs to Y'\ :sub:`00`, Y'\ :sub:`01`,
+Y'\ :sub:`10`, and Y'\ :sub:`11`. The Cr data, just like the Cb plane,
+is in the third plane.
+
+``V4L2_PIX_FMT_YVU420M`` is the same except the Cr data is stored in the
+second plane and the Cb data in the third plane.
+
+If the Y plane has pad bytes after each row, then the Cb and Cr planes
+have half as many pad bytes after their rows. In other words, two Cx
+rows (including padding) is exactly as long as one Y row (including
+padding).
+
+``V4L2_PIX_FMT_YUV420M`` and ``V4L2_PIX_FMT_YVU420M`` are intended to be
+used only in drivers and applications that support the multi-planar API,
+described in :ref:`planar-apis`.
+
+**Byte Order.**
+Each cell is one byte.
+
+
+
+.. flat-table::
+    :header-rows:  0
+    :stub-columns: 0
+    :widths:       2 1 1 1 1
+
+
+    -  .. row 1
+
+       -  start0 + 0:
+
+       -  Y'\ :sub:`00`
+
+       -  Y'\ :sub:`01`
+
+       -  Y'\ :sub:`02`
+
+       -  Y'\ :sub:`03`
+
+    -  .. row 2
+
+       -  start0 + 4:
+
+       -  Y'\ :sub:`10`
+
+       -  Y'\ :sub:`11`
+
+       -  Y'\ :sub:`12`
+
+       -  Y'\ :sub:`13`
+
+    -  .. row 3
+
+       -  start0 + 8:
+
+       -  Y'\ :sub:`20`
+
+       -  Y'\ :sub:`21`
+
+       -  Y'\ :sub:`22`
+
+       -  Y'\ :sub:`23`
+
+    -  .. row 4
+
+       -  start0 + 12:
+
+       -  Y'\ :sub:`30`
+
+       -  Y'\ :sub:`31`
+
+       -  Y'\ :sub:`32`
+
+       -  Y'\ :sub:`33`
+
+    -  .. row 5
+
+       -
+
+    -  .. row 6
+
+       -  start1 + 0:
+
+       -  Cb\ :sub:`00`
+
+       -  Cb\ :sub:`01`
+
+    -  .. row 7
+
+       -  start1 + 2:
+
+       -  Cb\ :sub:`10`
+
+       -  Cb\ :sub:`11`
+
+    -  .. row 8
+
+       -
+
+    -  .. row 9
+
+       -  start2 + 0:
+
+       -  Cr\ :sub:`00`
+
+       -  Cr\ :sub:`01`
+
+    -  .. row 10
+
+       -  start2 + 2:
+
+       -  Cr\ :sub:`10`
+
+       -  Cr\ :sub:`11`
+
+
+**Color Sample Location..**
+
+
+
+.. flat-table::
+    :header-rows:  0
+    :stub-columns: 0
+
+
+    -  .. row 1
+
+       -
+       -  0
+
+       -
+       -  1
+
+       -
+       -  2
+
+       -
+       -  3
+
+    -  .. row 2
+
+       -  0
+
+       -  Y
+
+       -
+       -  Y
+
+       -
+       -  Y
+
+       -
+       -  Y
+
+    -  .. row 3
+
+       -
+       -
+       -  C
+
+       -
+       -
+       -
+       -  C
+
+       -
+
+    -  .. row 4
+
+       -  1
+
+       -  Y
+
+       -
+       -  Y
+
+       -
+       -  Y
+
+       -
+       -  Y
+
+    -  .. row 5
+
+       -
+
+    -  .. row 6
+
+       -  2
+
+       -  Y
+
+       -
+       -  Y
+
+       -
+       -  Y
+
+       -
+       -  Y
+
+    -  .. row 7
+
+       -
+       -
+       -  C
+
+       -
+       -
+       -
+       -  C
+
+       -
+
+    -  .. row 8
+
+       -  3
+
+       -  Y
+
+       -
+       -  Y
+
+       -
+       -  Y
+
+       -
+       -  Y