Merge tag 'media/v4.8-4' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media documentation updates from Mauro Carvalho Chehab:
 "This patch series does the conversion of all media documentation stuff
  to Restrutured Text markup format and add them to the
  Documentation/index.rst file.

  The media documentation was grouped into 4 books:

    - media uAPI
    - media kAPI
    - V4L driver-specific documentation
    - DVB driver-specific documentation

  It also contains several documentation improvements and one fixup
  patch for a core issue with cropcap.

  PS.  After this patch series, the media DocBook is deprecated and
  should be removed.  I'll add such patch on a future pull request"

* tag 'media/v4.8-4' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (322 commits)
  [media] cx23885-cardlist.rst: add a new card
  [media] doc-rst: add some needed escape codes
  [media] doc-rst: kapi: use :c:func: instead of :cpp:func
  doc-rst: kernel-doc: fix a change introduced by mistake
  [media] v4l2-ioctl.h add debug info for struct v4l2_ioctl_ops
  [media] dvb_ringbuffer.h: some documentation improvements
  [media] v4l2-ctrls.h: fully document the header file
  [media] doc-rst: Fix some typedef ugly warnings
  [media] doc-rst: reorganize the kAPI v4l2 chapters
  [media] rename v4l2-framework.rst to v4l2-intro.rst
  [media] move V4L2 clocks to a separate .rst file
  [media] v4l2-fh.rst: add cross references and markups
  [media] v4l2-fh.rst: add fh contents from v4l2-framework.rst
  [media] v4l2-fh.h: add documentation for it
  [media] v4l2-event.rst: add cross-references and markups
  [media] v4l2-event.h: document all functions
  [media] v4l2-event.rst: add text from v4l2-framework.rst
  [media] v4l2-framework.rst: remove videobuf quick chapter
  [media] v4l2-dev: add cross-references and improve markup
  [media] doc-rst: move v4l2-dev doc to a separate file
  ...

1 files changed, 221 insertions, 0 deletions

diff --git a/Documentation/media/uapi/v4l/pixfmt-nv12.rst b/Documentation/media/uapi/v4l/pixfmt-nv12.rst
new file mode 100644
index 000000000000..cf59b28f75b7
--- /dev/null
+++ b/Documentation/media/uapi/v4l/pixfmt-nv12.rst
@@ -0,0 +1,221 @@
+.. -*- coding: utf-8; mode: rst -*-
+
+.. _V4L2-PIX-FMT-NV12:
+.. _V4L2-PIX-FMT-NV21:
+
+******************************************************
+V4L2_PIX_FMT_NV12 ('NV12'), V4L2_PIX_FMT_NV21 ('NV21')
+******************************************************
+
+*man V4L2_PIX_FMT_NV12(2)*
+
+V4L2_PIX_FMT_NV21
+Formats with ½ horizontal and vertical chroma resolution, also known as
+YUV 4:2:0. One luminance and one chrominance plane with alternating
+chroma samples as opposed to ``V4L2_PIX_FMT_YVU420``
+
+
+Description
+===========
+
+These are two-plane versions of the YUV 4:2:0 format. The three
+components are separated into two sub-images or planes. The Y plane is
+first. The Y plane has one byte per pixel. For ``V4L2_PIX_FMT_NV12``, a
+combined CbCr plane immediately follows the Y plane in memory. The CbCr
+plane is the same width, in bytes, as the Y plane (and of the image),
+but is half as tall in pixels. Each CbCr pair belongs to four pixels.
+For example, Cb\ :sub:`0`/Cr\ :sub:`0` belongs to Y'\ :sub:`00`,
+Y'\ :sub:`01`, Y'\ :sub:`10`, Y'\ :sub:`11`. ``V4L2_PIX_FMT_NV21`` is
+the same except the Cb and Cr bytes are swapped, the CrCb plane starts
+with a Cr byte.
+
+If the Y plane has pad bytes after each row, then the CbCr plane has as
+many pad bytes after its rows.
+
+**Byte Order.**
+Each cell is one byte.
+
+
+
+.. flat-table::
+    :header-rows:  0
+    :stub-columns: 0
+    :widths:       2 1 1 1 1
+
+
+    -  .. row 1
+
+       -  start + 0:
+
+       -  Y'\ :sub:`00`
+
+       -  Y'\ :sub:`01`
+
+       -  Y'\ :sub:`02`
+
+       -  Y'\ :sub:`03`
+
+    -  .. row 2
+
+       -  start + 4:
+
+       -  Y'\ :sub:`10`
+
+       -  Y'\ :sub:`11`
+
+       -  Y'\ :sub:`12`
+
+       -  Y'\ :sub:`13`
+
+    -  .. row 3
+
+       -  start + 8:
+
+       -  Y'\ :sub:`20`
+
+       -  Y'\ :sub:`21`
+
+       -  Y'\ :sub:`22`
+
+       -  Y'\ :sub:`23`
+
+    -  .. row 4
+
+       -  start + 12:
+
+       -  Y'\ :sub:`30`
+
+       -  Y'\ :sub:`31`
+
+       -  Y'\ :sub:`32`
+
+       -  Y'\ :sub:`33`
+
+    -  .. row 5
+
+       -  start + 16:
+
+       -  Cb\ :sub:`00`
+
+       -  Cr\ :sub:`00`
+
+       -  Cb\ :sub:`01`
+
+       -  Cr\ :sub:`01`
+
+    -  .. row 6
+
+       -  start + 20:
+
+       -  Cb\ :sub:`10`
+
+       -  Cr\ :sub:`10`
+
+       -  Cb\ :sub:`11`
+
+       -  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