linux-kernel - [PATCH/RFC v8 05/14] v4l2-ctrls: Add V4L2_CID_FLASH_SYNC

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Date:	Fri, 28 Nov 2014 10:17:57 +0100
From:	Jacek Anaszewski <j.anaszewski@...sung.com>
To:	linux-leds@...r.kernel.org, linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc:	kyungmin.park@...sung.com, b.zolnierkie@...sung.com, pavel@....cz,
	cooloney@...il.com, rpurdie@...ys.net, sakari.ailus@....fi,
	s.nawrocki@...sung.com,
	Jacek Anaszewski <j.anaszewski@...sung.com>,
	Hans Verkuil <hans.verkuil@...co.com>
Subject: [PATCH/RFC v8 05/14] v4l2-ctrls: Add V4L2_CID_FLASH_SYNC_STROBE control

Add V4L2_CID_FLASH_SYNC_STROBE control for determining
whether a flash device strobe has to be synchronized
with other flash leds controller by the same device.

Signed-off-by: Jacek Anaszewski <j.anaszewski@...sung.com>
Acked-by: Kyungmin Park <kyungmin.park@...sung.com>
Cc: Sakari Ailus <sakari.ailus@....fi>
Cc: Hans Verkuil <hans.verkuil@...co.com>
---
 Documentation/DocBook/media/v4l/controls.xml |    9 +++++++++
 drivers/media/v4l2-core/v4l2-ctrls.c         |    2 ++
 include/uapi/linux/v4l2-controls.h           |    1 +
 3 files changed, 12 insertions(+)

diff --git a/Documentation/DocBook/media/v4l/controls.xml b/Documentation/DocBook/media/v4l/controls.xml
index e013e4b..35e9ea3 100644
--- a/Documentation/DocBook/media/v4l/controls.xml
+++ b/Documentation/DocBook/media/v4l/controls.xml
@@ -4563,6 +4563,15 @@ interface and may change in the future.</para>
     	    after strobe during which another strobe will not be
     	    possible. This is a read-only control.</entry>
     	  </row>
+    	  <row>
+    	    <entry spanname="id"><constant>V4L2_CID_FLASH_SYNC_STROBE</constant></entry>
+    	    <entry>boolean</entry>
+    	  </row>
+    	  <row>
+    	    <entry spanname="descr">Synchronized strobe: whether the flash
+	    should be strobed synchronously with the other ones controlled
+	    by the same device</entry>
+    	  </row>
     	  <row><entry></entry></row>
     	</tbody>
           </tgroup>
diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
index 45c5b47..a7cca8c 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -846,6 +846,7 @@ const char *v4l2_ctrl_get_name(u32 id)
 	case V4L2_CID_FLASH_FAULT:		return "Faults";
 	case V4L2_CID_FLASH_CHARGE:		return "Charge";
 	case V4L2_CID_FLASH_READY:		return "Ready to Strobe";
+	case V4L2_CID_FLASH_SYNC_STROBE:	return "Synchronize Strobe";
 
 	/* JPEG encoder controls */
 	/* Keep the order of the 'case's the same as in v4l2-controls.h! */
@@ -949,6 +950,7 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
 	case V4L2_CID_FLASH_STROBE_STATUS:
 	case V4L2_CID_FLASH_CHARGE:
 	case V4L2_CID_FLASH_READY:
+	case V4L2_CID_FLASH_SYNC_STROBE:
 	case V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER:
 	case V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE:
 	case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE:
diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
index 661f119..5bce13d 100644
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -833,6 +833,7 @@ enum v4l2_flash_strobe_source {
 
 #define V4L2_CID_FLASH_CHARGE			(V4L2_CID_FLASH_CLASS_BASE + 11)
 #define V4L2_CID_FLASH_READY			(V4L2_CID_FLASH_CLASS_BASE + 12)
+#define V4L2_CID_FLASH_SYNC_STROBE		(V4L2_CID_FLASH_CLASS_BASE + 13)
 
 
 /* JPEG-class control IDs */
-- 
1.7.9.5

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