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authorKieran Bingham <kieran.bingham@ideasonboard.com>2018-01-08 20:55:23 +0300
committerMauro Carvalho Chehab <mchehab@s-opensource.com>2018-02-26 16:15:50 +0300
commit0018147c964e73cb6ee0d463cad534fb4309e286 (patch)
treefac1f668ab573be4273f82af5964967d164c5aaa /Documentation/media
parentc32678eac48ad3c0ecad47f8879f9017390e358a (diff)
downloadlinux-0018147c964e73cb6ee0d463cad534fb4309e286.tar.xz
media: v4l: doc: Clarify v4l2_mbus_fmt height definition
The v4l2_mbus_fmt width and height corresponds directly with the v4l2_pix_format definitions, yet the differences in documentation make it ambiguous what to do in the event of field heights. Clarify this using the same text as is provided for the v4l2_pix_format which is explicit on the matter, and by matching the terminology of 'image height' rather than the misleading 'frame height'. Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'Documentation/media')
-rw-r--r--Documentation/media/uapi/v4l/subdev-formats.rst8
1 files changed, 6 insertions, 2 deletions
diff --git a/Documentation/media/uapi/v4l/subdev-formats.rst b/Documentation/media/uapi/v4l/subdev-formats.rst
index b1eea44550e1..9fcabe7f9367 100644
--- a/Documentation/media/uapi/v4l/subdev-formats.rst
+++ b/Documentation/media/uapi/v4l/subdev-formats.rst
@@ -16,10 +16,14 @@ Media Bus Formats
* - __u32
- ``width``
- - Image width, in pixels.
+ - Image width in pixels.
* - __u32
- ``height``
- - Image height, in pixels.
+ - Image height in pixels. If ``field`` is one of ``V4L2_FIELD_TOP``,
+ ``V4L2_FIELD_BOTTOM`` or ``V4L2_FIELD_ALTERNATE`` then height
+ refers to the number of lines in the field, otherwise it refers to
+ the number of lines in the frame (which is twice the field height
+ for interlaced formats).
* - __u32
- ``code``
- Format code, from enum