diff options
Diffstat (limited to 'Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml')
| -rw-r--r-- | Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml b/Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml index 407dfceb71f0..f4db44d0d95a 100644 --- a/Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml +++ b/Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml @@ -58,6 +58,9 @@ To do this applications initialize the <structfield>tuner</structfield>, call the <constant>VIDIOC_S_HW_FREQ_SEEK</constant> ioctl with a pointer to this structure.</para> + <para>If an error is returned, then the original frequency will + be restored.</para> + <para>This ioctl is supported if the <constant>V4L2_CAP_HW_FREQ_SEEK</constant> capability is set.</para> <table pgwide="1" frame="none" id="v4l2-hw-freq-seek"> @@ -87,7 +90,10 @@ field and the &v4l2-tuner; <structfield>index</structfield> field.</entry> <row> <entry>__u32</entry> <entry><structfield>wrap_around</structfield></entry> - <entry>If non-zero, wrap around when at the end of the frequency range, else stop seeking.</entry> + <entry>If non-zero, wrap around when at the end of the frequency range, else stop seeking. + The &v4l2-tuner; <structfield>capability</structfield> field will tell you what the + hardware supports. + </entry> </row> <row> <entry>__u32</entry> @@ -118,9 +124,15 @@ wrong.</para> </listitem> </varlistentry> <varlistentry> - <term><errorcode>EAGAIN</errorcode></term> + <term><errorcode>ENODATA</errorcode></term> + <listitem> + <para>The hardware seek found no channels.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><errorcode>EBUSY</errorcode></term> <listitem> - <para>The ioctl timed-out. Try again.</para> + <para>Another hardware seek is already in progress.</para> </listitem> </varlistentry> </variablelist> |