diff options
Diffstat (limited to 'Documentation/DocBook/v4l/func-mmap.xml')
| -rw-r--r-- | Documentation/DocBook/v4l/func-mmap.xml | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/Documentation/DocBook/v4l/func-mmap.xml b/Documentation/DocBook/v4l/func-mmap.xml index 2e2fc3933aea..786732b64bbd 100644 --- a/Documentation/DocBook/v4l/func-mmap.xml +++ b/Documentation/DocBook/v4l/func-mmap.xml @@ -45,7 +45,10 @@ just specify a <constant>NULL</constant> pointer here.</para> <listitem> <para>Length of the memory area to map. This must be the same value as returned by the driver in the &v4l2-buffer; -<structfield>length</structfield> field.</para> +<structfield>length</structfield> field for the +single-planar API, and the same value as returned by the driver +in the &v4l2-plane; <structfield>length</structfield> field for the +multi-planar API.</para> </listitem> </varlistentry> <varlistentry> @@ -106,7 +109,10 @@ flag.</para> <listitem> <para>Offset of the buffer in device memory. This must be the same value as returned by the driver in the &v4l2-buffer; -<structfield>m</structfield> union <structfield>offset</structfield> field.</para> +<structfield>m</structfield> union <structfield>offset</structfield> field for +the single-planar API, and the same value as returned by the driver +in the &v4l2-plane; <structfield>m</structfield> union +<structfield>mem_offset</structfield> field for the multi-planar API.</para> </listitem> </varlistentry> </variablelist> |