From: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Update the spec with the new capabilities and specify new error codes for
S_HW_FREQ_SEEK.
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
---
.../DocBook/media/v4l/vidioc-g-frequency.xml | 6 ++++++
Documentation/DocBook/media/v4l/vidioc-g-tuner.xml | 12 ++++++++++++
.../DocBook/media/v4l/vidioc-s-hw-freq-seek.xml | 18 +++++++++++++++---
3 files changed, 33 insertions(+), 3 deletions(-)
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-frequency.xml b/Documentation/DocBook/media/v4l/vidioc-g-frequency.xml
index 69c178a..40e58a4 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-frequency.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-frequency.xml
@@ -135,6 +135,12 @@ bounds or the value in the <structfield>type</structfield> field is
wrong.</para>
</listitem>
</varlistentry>
+ <varlistentry>
+ <term><errorcode>EBUSY</errorcode></term>
+ <listitem>
+ <para>A hardware seek is in progress.</para>
+ </listitem>
+ </varlistentry>
</variablelist>
</refsect1>
</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-tuner.xml b/Documentation/DocBook/media/v4l/vidioc-g-tuner.xml
index 62a1aa2..95d5371 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-tuner.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-tuner.xml
@@ -276,6 +276,18 @@ can or must be switched. (B/G PAL tuners for example are typically not
<constant>V4L2_TUNER_ANALOG_TV</constant> tuners can have this capability.</entry>
</row>
<row>
+ <entry><constant>V4L2_TUNER_CAP_HWSEEK_BOUNDED</constant></entry>
+ <entry>0x0004</entry>
+ <entry>If set, then this tuner supports the hardware seek functionality
+ where the seek stops when it reaches the end of the frequency range.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_TUNER_CAP_HWSEEK_WRAP</constant></entry>
+ <entry>0x0008</entry>
+ <entry>If set, then this tuner supports the hardware seek functionality
+ where the seek wraps around when it reaches the end of the frequency range.</entry>
+ </row>
+ <row>
<entry><constant>V4L2_TUNER_CAP_STEREO</constant></entry>
<entry>0x0010</entry>
<entry>Stereo audio reception is supported.</entry>
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 407dfce..d58b648 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 frequency 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>
--
1.7.10
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