--- /dev/null
+<refentry id="vidioc-dv-timings-cap">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_DV_TIMINGS_CAP, VIDIOC_SUBDEV_DV_TIMINGS_CAP</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_DV_TIMINGS_CAP</refname>
+ <refname>VIDIOC_SUBDEV_DV_TIMINGS_CAP</refname>
+ <refpurpose>The capabilities of the Digital Video receiver/transmitter</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 v4l2_dv_timings_cap *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_DV_TIMINGS_CAP, VIDIOC_SUBDEV_DV_TIMINGS_CAP</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <note>
+ <title>Experimental</title>
+ <para>This is an <link linkend="experimental"> experimental </link>
+ interface and may change in the future.</para>
+ </note>
+
+ <para>To query the capabilities of the DV receiver/transmitter applications
+can call the <constant>VIDIOC_DV_TIMINGS_CAP</constant> ioctl on a video node
+and the driver will fill in the structure. Note that drivers may return
+different values after switching the video input or output.</para>
+
+ <para>When implemented by the driver DV capabilities of subdevices can be
+queried by calling the <constant>VIDIOC_SUBDEV_DV_TIMINGS_CAP</constant> ioctl
+directly on a subdevice node. The capabilities are specific to inputs (for DV
+receivers) or outputs (for DV transmitters), applications must specify the
+desired pad number in the &v4l2-dv-timings-cap; <structfield>pad</structfield>
+field. Attempts to query capabilities on a pad that doesn't support them will
+return an &EINVAL;.</para>
+
+ <table pgwide="1" frame="none" id="v4l2-bt-timings-cap">
+ <title>struct <structname>v4l2_bt_timings_cap</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>min_width</structfield></entry>
+ <entry>Minimum width of the active video in pixels.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>max_width</structfield></entry>
+ <entry>Maximum width of the active video in pixels.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>min_height</structfield></entry>
+ <entry>Minimum height of the active video in lines.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>max_height</structfield></entry>
+ <entry>Maximum height of the active video in lines.</entry>
+ </row>
+ <row>
+ <entry>__u64</entry>
+ <entry><structfield>min_pixelclock</structfield></entry>
+ <entry>Minimum pixelclock frequency in Hz.</entry>
+ </row>
+ <row>
+ <entry>__u64</entry>
+ <entry><structfield>max_pixelclock</structfield></entry>
+ <entry>Maximum pixelclock frequency in Hz.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>standards</structfield></entry>
+ <entry>The video standard(s) supported by the hardware.
+ See <xref linkend="dv-bt-standards"/> for a list of standards.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>capabilities</structfield></entry>
+ <entry>Several flags giving more information about the capabilities.
+ See <xref linkend="dv-bt-cap-capabilities"/> for a description of the flags.
+ </entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved</structfield>[16]</entry>
+ <entry>Reserved for future extensions. Drivers must set the array to zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="v4l2-dv-timings-cap">
+ <title>struct <structname>v4l2_dv_timings_cap</structname></title>
+ <tgroup cols="4">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>type</structfield></entry>
+ <entry>Type of DV timings as listed in <xref linkend="dv-timing-types"/>.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>pad</structfield></entry>
+ <entry>Pad number as reported by the media controller API. This field
+ is only used when operating on a subdevice node. When operating on a
+ video node applications must set this field to zero.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved</structfield>[2]</entry>
+ <entry>Reserved for future extensions. Drivers must set the array to zero.</entry>
+ </row>
+ <row>
+ <entry>union</entry>
+ <entry><structfield></structfield></entry>
+ <entry></entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>&v4l2-bt-timings-cap;</entry>
+ <entry><structfield>bt</structfield></entry>
+ <entry>BT.656/1120 timings capabilities of the hardware.</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>__u32</entry>
+ <entry><structfield>raw_data</structfield>[32]</entry>
+ <entry></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="dv-bt-cap-capabilities">
+ <title>DV BT Timing capabilities</title>
+ <tgroup cols="2">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>Flag</entry>
+ <entry>Description</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry>
+ </row>
+ <row>
+ <entry>V4L2_DV_BT_CAP_INTERLACED</entry>
+ <entry>Interlaced formats are supported.
+ </entry>
+ </row>
+ <row>
+ <entry>V4L2_DV_BT_CAP_PROGRESSIVE</entry>
+ <entry>Progressive formats are supported.
+ </entry>
+ </row>
+ <row>
+ <entry>V4L2_DV_BT_CAP_REDUCED_BLANKING</entry>
+ <entry>CVT/GTF specific: the timings can make use of reduced blanking (CVT)
+or the 'Secondary GTF' curve (GTF).
+ </entry>
+ </row>
+ <row>
+ <entry>V4L2_DV_BT_CAP_CUSTOM</entry>
+ <entry>Can support non-standard timings, i.e. timings not belonging to the
+standards set in the <structfield>standards</structfield> field.
+ </entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+ </refsect1>
+</refentry>
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