Signed-off-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
Documentation/DocBook/media/v4l/dev-subdev.xml | 27 +++++++++++++++++++-
.../media/v4l/vidioc-subdev-g-selection.xml | 14 ++++++++--
include/linux/v4l2-subdev.h | 4 +++
3 files changed, 42 insertions(+), 3 deletions(-)
diff --git a/Documentation/DocBook/media/v4l/dev-subdev.xml b/Documentation/DocBook/media/v4l/dev-subdev.xml
index 4afcbbe..8a212c4 100644
--- a/Documentation/DocBook/media/v4l/dev-subdev.xml
+++ b/Documentation/DocBook/media/v4l/dev-subdev.xml
@@ -277,7 +277,7 @@
</section>
<section>
- <title>Selections: cropping, scaling and composition</title>
+ <title>Selections - cropping, scaling and composition</title>
<para>Many sub-devices support cropping frames on their input or output
pads (or possible even on both). Cropping is used to select the area of
@@ -330,6 +330,31 @@
</section>
<section>
+ <title>Selections - regions of interest</title>
+ <section>
+ <title>Automatic focus</title>
+
+ <para>The camera automatic focus algorithms may require configuration
+ of a region or multiple regions of interest in form of rectangle or spot
+ coordinates.</para>
+
+ <para>A single rectangle of interest is represented in &v4l2-rect;
+ by the coordinates of the top left corner and the rectangle size. Both
+ the coordinates and sizes are expressed in pixels. When the <structfield>
+ width</structfield> and <structfield>height</structfield> fields of
+ &v4l2-rect; are set to 0 the selection determines spot coordinates,
+ rather than a rectangle.</para>
+
+ <para>Auto focus rectangles are reset to their default values when the
+ output image format is modified. Drivers should use the output image size
+ as the auto focus rectangle default value, but hardware requirements may
+ prevent this.
+ </para>
+ <para>The auto focus selections on input pads are not defined.</para>
+ </section>
+ </section>
+
+ <section>
<title>Types of selection targets</title>
<section>
diff --git a/Documentation/DocBook/media/v4l/vidioc-subdev-g-selection.xml b/Documentation/DocBook/media/v4l/vidioc-subdev-g-selection.xml
index 208e9f0..c4ccae5 100644
--- a/Documentation/DocBook/media/v4l/vidioc-subdev-g-selection.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-subdev-g-selection.xml
@@ -57,8 +57,8 @@
<para>The selections are used to configure various image
processing functionality performed by the subdevs which affect the
- image size. This currently includes cropping, scaling and
- composition.</para>
+ image size. This currently includes cropping, scaling, composition
+ and automatic focus regions of interest.</para>
<para>The selection API replaces <link
linkend="vidioc-subdev-g-crop">the old subdev crop API</link>. All
@@ -114,6 +114,16 @@
<entry>0x0102</entry>
<entry>Bounds of the compose rectangle.</entry>
</row>
+ <row>
+ <entry><constant>V4L2_SUBDEV_SEL_TGT_AUTO_FOCUS_BOUNDS</constant></entry>
+ <entry>0x1000</entry>
+ <entry>Bounds of the automatic focus region of interest.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_SUBDEV_SEL_TGT_AUTO_FOCUS_ACTUAL</constant></entry>
+ <entry>0x1001</entry>
+ <entry>Actual automatic focus rectangle or spot coordinates.</entry>
+ </row>
</tbody>
</tgroup>
</table>
diff --git a/include/linux/v4l2-subdev.h b/include/linux/v4l2-subdev.h
index 812019e..49b1f14 100644
--- a/include/linux/v4l2-subdev.h
+++ b/include/linux/v4l2-subdev.h
@@ -136,6 +136,10 @@ struct v4l2_subdev_frame_interval_enum {
/* composing bounds */
#define V4L2_SUBDEV_SEL_TGT_COMPOSE_BOUNDS 0x0102
+/* auto focus region of interest */
+#define V4L2_SUBDEV_SEL_TGT_AUTO_FOCUS_ACTUAL 0x1000
+/* auto focus region (spot coordinates) bounds */
+#define V4L2_SUBDEV_SEL_TGT_AUTO_FOCUS_BOUNDS 0x1001
/**
* struct v4l2_subdev_selection - selection info
--
1.7.10
--
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