From 74a45790861f659058e8f8b565d98e5a1fdd8440 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Fri, 26 Aug 2011 07:31:13 -0300 Subject: [media] videodev2.h: add V4L2_CTRL_FLAG_VOLATILE Add a new VOLATILE control flag that is set for volatile controls. That way applications know whether the value of the control is volatile (i.e. can change continuously) or not. Until now this was an internal property, but it is useful to know in userspace as well. A typical use case is the gain value when autogain is on. In that case the hardware will continuously adjust the gain based various environmental factors. This patch just adds and documents the flag, it's not yet used. Signed-off-by: Hans Verkuil Acked-by: Hans de Goede Signed-off-by: Mauro Carvalho Chehab --- Documentation/DocBook/media/v4l/v4l2.xml | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'Documentation/DocBook/media/v4l/v4l2.xml') diff --git a/Documentation/DocBook/media/v4l/v4l2.xml b/Documentation/DocBook/media/v4l/v4l2.xml index 0d05e8747c12..40132c277647 100644 --- a/Documentation/DocBook/media/v4l/v4l2.xml +++ b/Documentation/DocBook/media/v4l/v4l2.xml @@ -127,6 +127,13 @@ structs, ioctls) must be noted in more detail in the history chapter (compat.xml), along with the possible impact on existing drivers and applications. --> + + 3.2 + 2011-08-26 + hv + Added V4L2_CTRL_FLAG_VOLATILE. + + 3.1 2011-06-27 @@ -410,7 +417,7 @@ and discussions on the V4L mailing list. Video for Linux Two API Specification - Revision 3.1 + Revision 3.2 &sub-common; -- cgit v1.2.3-59-g8ed1b