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Diffstat (limited to 'Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml')
| -rw-r--r-- | Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml b/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml deleted file mode 100644 index 0c4f96bfc..000000000 --- a/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml +++ /dev/null @@ -1,180 +0,0 @@ -<refentry id="media-ioc-enum-entities"> - <refmeta> - <refentrytitle>ioctl MEDIA_IOC_ENUM_ENTITIES</refentrytitle> - &manvol; - </refmeta> - - <refnamediv> - <refname>MEDIA_IOC_ENUM_ENTITIES</refname> - <refpurpose>Enumerate entities and their properties</refpurpose> - </refnamediv> - - <refsynopsisdiv> - <funcsynopsis> - <funcprototype> - <funcdef>int <function>ioctl</function></funcdef> - <paramdef>int <parameter>fd</parameter></paramdef> - <paramdef>int <parameter>request</parameter></paramdef> - <paramdef>struct media_entity_desc *<parameter>argp</parameter></paramdef> - </funcprototype> - </funcsynopsis> - </refsynopsisdiv> - - <refsect1> - <title>Arguments</title> - - <variablelist> - <varlistentry> - <term><parameter>fd</parameter></term> - <listitem> - <para>File descriptor returned by - <link linkend='media-func-open'><function>open()</function></link>.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><parameter>request</parameter></term> - <listitem> - <para>MEDIA_IOC_ENUM_ENTITIES</para> - </listitem> - </varlistentry> - <varlistentry> - <term><parameter>argp</parameter></term> - <listitem> - <para></para> - </listitem> - </varlistentry> - </variablelist> - </refsect1> - - <refsect1> - <title>Description</title> - <para>To query the attributes of an entity, applications set the id field - of a &media-entity-desc; structure and call the MEDIA_IOC_ENUM_ENTITIES - ioctl with a pointer to this structure. The driver fills the rest of the - structure or returns an &EINVAL; when the id is invalid.</para> - <para>Entities can be enumerated by or'ing the id with the - <constant>MEDIA_ENT_ID_FLAG_NEXT</constant> flag. The driver will return - information about the entity with the smallest id strictly larger than the - requested one ('next entity'), or the &EINVAL; if there is none.</para> - <para>Entity IDs can be non-contiguous. Applications must - <emphasis>not</emphasis> try to enumerate entities by calling - MEDIA_IOC_ENUM_ENTITIES with increasing id's until they get an error.</para> - - <table pgwide="1" frame="none" id="media-entity-desc"> - <title>struct <structname>media_entity_desc</structname></title> - <tgroup cols="5"> - <colspec colname="c1" /> - <colspec colname="c2" /> - <colspec colname="c3" /> - <colspec colname="c4" /> - <colspec colname="c5" /> - <tbody valign="top"> - <row> - <entry>__u32</entry> - <entry><structfield>id</structfield></entry> - <entry></entry> - <entry></entry> - <entry>Entity id, set by the application. When the id is or'ed with - <constant>MEDIA_ENT_ID_FLAG_NEXT</constant>, the driver clears the - flag and returns the first entity with a larger id.</entry> - </row> - <row> - <entry>char</entry> - <entry><structfield>name</structfield>[32]</entry> - <entry></entry> - <entry></entry> - <entry>Entity name as an UTF-8 NULL-terminated string.</entry> - </row> - <row> - <entry>__u32</entry> - <entry><structfield>type</structfield></entry> - <entry></entry> - <entry></entry> - <entry>Entity type, see <xref linkend="media-entity-type" /> for details.</entry> - </row> - <row> - <entry>__u32</entry> - <entry><structfield>revision</structfield></entry> - <entry></entry> - <entry></entry> - <entry>Entity revision. Always zero (obsolete)</entry> - </row> - <row> - <entry>__u32</entry> - <entry><structfield>flags</structfield></entry> - <entry></entry> - <entry></entry> - <entry>Entity flags, see <xref linkend="media-entity-flag" /> for details.</entry> - </row> - <row> - <entry>__u32</entry> - <entry><structfield>group_id</structfield></entry> - <entry></entry> - <entry></entry> - <entry>Entity group ID. Always zero (obsolete)</entry> - </row> - <row> - <entry>__u16</entry> - <entry><structfield>pads</structfield></entry> - <entry></entry> - <entry></entry> - <entry>Number of pads</entry> - </row> - <row> - <entry>__u16</entry> - <entry><structfield>links</structfield></entry> - <entry></entry> - <entry></entry> - <entry>Total number of outbound links. Inbound links are not counted - in this field.</entry> - </row> - <row> - <entry>union</entry> - </row> - <row> - <entry></entry> - <entry>struct</entry> - <entry><structfield>dev</structfield></entry> - <entry></entry> - <entry>Valid for (sub-)devices that create a single device node.</entry> - </row> - <row> - <entry></entry> - <entry></entry> - <entry>__u32</entry> - <entry><structfield>major</structfield></entry> - <entry>Device node major number.</entry> - </row> - <row> - <entry></entry> - <entry></entry> - <entry>__u32</entry> - <entry><structfield>minor</structfield></entry> - <entry>Device node minor number.</entry> - </row> - <row> - <entry></entry> - <entry>__u8</entry> - <entry><structfield>raw</structfield>[184]</entry> - <entry></entry> - <entry></entry> - </row> - </tbody> - </tgroup> - </table> - </refsect1> - - <refsect1> - &return-value; - - <variablelist> - <varlistentry> - <term><errorcode>EINVAL</errorcode></term> - <listitem> - <para>The &media-entity-desc; <structfield>id</structfield> references - a non-existing entity.</para> - </listitem> - </varlistentry> - </variablelist> - </refsect1> -</refentry> |