linux-kernel - [PATCH v5 2/6] extended-controls.rst: add PorterDuff mode control

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Message-Id: <1501643987-27847-3-git-send-email-jacob-chen@iotwrt.com>
Date:   Wed,  2 Aug 2017 11:19:43 +0800
From:   Jacob Chen <jacob-chen@...wrt.com>
To:     linux-rockchip@...ts.infradead.org
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        devicetree@...r.kernel.org, heiko@...ech.de, robh+dt@...nel.org,
        mchehab@...nel.org, linux-media@...r.kernel.org,
        laurent.pinchart+renesas@...asonboard.com, hans.verkuil@...co.com,
        tfiga@...omium.org, nicolas@...fresne.ca,
        Jacob Chen <jacob-chen@...wrt.com>
Subject: [PATCH v5 2/6] extended-controls.rst: add PorterDuff mode control

PorterDuff mode control are used to determine
how two images are combined.

Signed-off-by: Jacob Chen <jacob-chen@...wrt.com>
---
 Documentation/media/uapi/v4l/extended-controls.rst | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/media/uapi/v4l/extended-controls.rst b/Documentation/media/uapi/v4l/extended-controls.rst
index abb1057..b713581 100644
--- a/Documentation/media/uapi/v4l/extended-controls.rst
+++ b/Documentation/media/uapi/v4l/extended-controls.rst
@@ -3021,6 +3021,11 @@ Image Process Control IDs
     The video deinterlacing mode (such as Bob, Weave, ...). The menu items are
     driver specific and are documented in :ref:`v4l-drivers`.
 
+``V4L2_CID_PORTER_DUFF_MODE (menu)``
+    The PorterDuff blend modes. PorterDuff is a method to overlay, combine and
+    trim images as if they were pieces of cardboard. The device uses this to
+    determine how two images are combined. For more information see
+    `PorterDuff.Mode <https://developer.android.com/reference/android/graphics/PorterDuff.Mode.html>`__.
 
 .. _dv-controls:
 
-- 
2.7.4