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| author | Hans Verkuil <hans.verkuil@cisco.com> | 2012-09-14 06:44:20 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-09-26 09:46:39 -0300 |
| commit | 663dc7f3a02712e22ef81f4c7b7b1caecceb8e4f (patch) | |
| tree | dd5ccbbd1f8c35503828de677d84a52845b1a78f /Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml | |
| parent | 2cca7d4e4dec86c20631612163b83477db4404c5 (diff) | |
| download | op-kernel-dev-663dc7f3a02712e22ef81f4c7b7b1caecceb8e4f.zip op-kernel-dev-663dc7f3a02712e22ef81f4c7b7b1caecceb8e4f.tar.gz | |
[media] DocBook: document when to return ENODATA
ENODATA should be returned if the API used for getting, changing, querying
or enumerating the current video timings is not supported by the current input
or output.
This was decided during the 2012 Media Workshop.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml')
| -rw-r--r-- | Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml b/Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml index eda1a29..feaa180 100644 --- a/Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml +++ b/Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml @@ -56,7 +56,9 @@ a pointer to the &v4l2-dv-timings; structure as argument. If the ioctl is not su or the timing values are not correct, the driver returns &EINVAL;.</para> <para>The <filename>linux/v4l2-dv-timings.h</filename> header can be used to get the timings of the formats in the <xref linkend="cea861" /> and <xref linkend="vesadmt" /> -standards.</para> +standards. If the current input or output does not support DV timings (e.g. if +&VIDIOC-ENUMINPUT; does not set the <constant>V4L2_IN_CAP_CUSTOM_TIMINGS</constant> flag), then +&ENODATA; is returned.</para> </refsect1> <refsect1> @@ -71,6 +73,12 @@ standards.</para> </listitem> </varlistentry> <varlistentry> + <term><errorcode>ENODATA</errorcode></term> + <listitem> + <para>Digital video timings are not supported for this input or output.</para> + </listitem> + </varlistentry> + <varlistentry> <term><errorcode>EBUSY</errorcode></term> <listitem> <para>The device is busy and therefore can not change the timings.</para> @@ -320,7 +328,4 @@ detected or used depends on the hardware. </tgroup> </table> </refsect1> - <refsect1> - &return-value; - </refsect1> </refentry> |
