[media] v4l: Common documentation for selection targets

Both V4L2 and V4L2 subdev interface have very similar selection APIs with
differences foremost related to in-memory and media bus formats. However,
the selection targets are the same for both. Most targets are and in the
future will likely continue to be more the same than with any differences.
Thus it makes sense to unify the documentation of the targets.

Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 5 insertions, 49 deletions

diff --git a/Documentation/DocBook/media/v4l/vidioc-g-selection.xml b/Documentation/DocBook/media/v4l/vidioc-g-selection.xml
index 6376e57ff576..c6f83257ecee 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-selection.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-selection.xml
@@ -67,7 +67,7 @@ Do not use multiplanar buffers.  Use <constant> V4L2_BUF_TYPE_VIDEO_CAPTURE
 setting the value of &v4l2-selection; <structfield>target</structfield> field
 to <constant> V4L2_SEL_TGT_CROP </constant> (<constant>
 V4L2_SEL_TGT_COMPOSE </constant>).  Please refer to table <xref
-linkend="v4l2-sel-target" /> or <xref linkend="selection-api" /> for additional
+linkend="v4l2-selections-common" /> or <xref linkend="selection-api" /> for additional
 targets.  The <structfield>flags</structfield> and <structfield>reserved
 </structfield> fields of &v4l2-selection; are ignored and they must be filled
 with zeros.  The driver fills the rest of the structure or
@@ -88,7 +88,7 @@ use multiplanar buffers.  Use <constant> V4L2_BUF_TYPE_VIDEO_CAPTURE
 setting the value of &v4l2-selection; <structfield>target</structfield> to
 <constant>V4L2_SEL_TGT_CROP</constant> (<constant>
 V4L2_SEL_TGT_COMPOSE </constant>). Please refer to table <xref
-linkend="v4l2-sel-target" /> or <xref linkend="selection-api" /> for additional
+linkend="v4l2-selections-common" /> or <xref linkend="selection-api" /> for additional
 targets.  The &v4l2-rect; <structfield>r</structfield> rectangle need to be
 set to the desired active area. Field &v4l2-selection; <structfield> reserved
 </structfield> is ignored and must be filled with zeros.  The driver may adjust
@@ -154,52 +154,8 @@ exist no rectangle </emphasis> that satisfies the constraints.</para>
 
   </refsect1>
 
-  <refsect1>
-    <table frame="none" pgwide="1" id="v4l2-sel-target">
-      <title>Selection targets.</title>
-      <tgroup cols="3">
-	&cs-def;
-	<tbody valign="top">
-	  <row>
-            <entry><constant>V4L2_SEL_TGT_CROP</constant></entry>
-            <entry>0x0000</entry>
-            <entry>The area that is currently cropped by hardware.</entry>
-	  </row>
-	  <row>
-            <entry><constant>V4L2_SEL_TGT_CROP_DEFAULT</constant></entry>
-            <entry>0x0001</entry>
-            <entry>Suggested cropping rectangle that covers the "whole picture".</entry>
-	  </row>
-	  <row>
-            <entry><constant>V4L2_SEL_TGT_CROP_BOUNDS</constant></entry>
-            <entry>0x0002</entry>
-            <entry>Limits for the cropping rectangle.</entry>
-	  </row>
-	  <row>
-            <entry><constant>V4L2_SEL_TGT_COMPOSE</constant></entry>
-            <entry>0x0100</entry>
-            <entry>The area to which data is composed by hardware.</entry>
-	  </row>
-	  <row>
-            <entry><constant>V4L2_SEL_TGT_COMPOSE_DEFAULT</constant></entry>
-            <entry>0x0101</entry>
-            <entry>Suggested composing rectangle that covers the "whole picture".</entry>
-	  </row>
-	  <row>
-            <entry><constant>V4L2_SEL_TGT_COMPOSE_BOUNDS</constant></entry>
-            <entry>0x0102</entry>
-            <entry>Limits for the composing rectangle.</entry>
-	  </row>
-	  <row>
-            <entry><constant>V4L2_SEL_TGT_COMPOSE_PADDED</constant></entry>
-            <entry>0x0103</entry>
-            <entry>The active area and all padding pixels that are inserted or
-	      modified by hardware.</entry>
-	  </row>
-	</tbody>
-      </tgroup>
-    </table>
-  </refsect1>
+  <para>Selection targets are documented in <xref
+  linkend="v4l2-selections-common"/>.</para>
 
   <refsect1>
     <table frame="none" pgwide="1" id="v4l2-sel-flags">
@@ -253,7 +209,7 @@ exist no rectangle </emphasis> that satisfies the constraints.</para>
 	  <row>
 	    <entry>__u32</entry>
 	    <entry><structfield>target</structfield></entry>
-            <entry>Used to select between <link linkend="v4l2-sel-target"> cropping
+            <entry>Used to select between <link linkend="v4l2-selections-common"> cropping
 	    and composing rectangles</link>.</entry>
 	  </row>
 	  <row>