media: vidioc-g-dv-timings.rst: fix typo (frontporch -> backporch)

The description of V4L2_DV_FL_HALF_LINE mixed up frontporch with backporch.

It's the backporch that has different sizes for interlaced formats, the frontporch
remains constant.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Hans Verkuil 2017-12-13 04:54:04 -05:00 committed by Mauro Carvalho Chehab
parent 6c84bbfe11
commit d9806f11b3

View File

@ -267,7 +267,7 @@ EBUSY
will also be cleared.
* - ``V4L2_DV_FL_HALF_LINE``
- Specific to interlaced formats: if set, then the vertical
frontporch of field 1 (aka the odd field) is really one half-line
backporch of field 1 (aka the odd field) is really one half-line
longer and the vertical backporch of field 2 (aka the even field)
is really one half-line shorter, so each field has exactly the
same number of half-lines. Whether half-lines can be detected or