From 4e4053a28f37ab45ee9d13b77b1b9f53923b87b3 Mon Sep 17 00:00:00 2001
From: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Date: Tue, 19 Jan 2021 15:05:37 +0100
Subject: [PATCH] media: docs: Document colorimetry class
Add a document for ext control colorimetry class.
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
.../userspace-api/media/v4l/common.rst | 1 +
.../media/v4l/ext-ctrls-colorimetry.rst | 22 +++++++++++++++++++
.../media/v4l/vidioc-g-ext-ctrls.rst | 4 ++++
3 files changed, 27 insertions(+)
create mode 100644 Documentation/userspace-api/media/v4l/ext-ctrls-colorimetry.rst
diff --git a/Documentation/userspace-api/media/v4l/common.rst b/Documentation/userspace-api/media/v4l/common.rst
index 8c263c5a85d86c..ea0435182e44b5 100644
--- a/Documentation/userspace-api/media/v4l/common.rst
+++ b/Documentation/userspace-api/media/v4l/common.rst
@@ -51,6 +51,7 @@ applicable to all devices.
ext-ctrls-fm-tx
ext-ctrls-fm-rx
ext-ctrls-detect
+ ext-ctrls-colorimetry
fourcc
format
planar-apis
diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-colorimetry.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-colorimetry.rst
new file mode 100644
index 00000000000000..862f78b41b3223
--- /dev/null
+++ b/Documentation/userspace-api/media/v4l/ext-ctrls-colorimetry.rst
@@ -0,0 +1,22 @@
+.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
+
+.. _colorimetry-controls:
+
+*****************************
+Colorimetry Control Reference
+*****************************
+
+The Colorimetry class includes controls for High Dynamic Range
+imaging for representing colors in digital images and video. The
+controls should be used for video and image encoding and decoding
+as well as in HDMI receivers and transmitters.
+
+Colorimetry Control IDs
+-----------------------
+
+.. _colorimetry-control-id:
+
+``V4L2_CID_COLORIMETRY_CLASS (class)``
+ The Colorimetry class descriptor. Calling
+ :ref:`VIDIOC_QUERYCTRL` for this control will
+ return a description of this control class.
diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst b/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst
index c50a76c70491b7..b460afe1ad4f6d 100644
--- a/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst
+++ b/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst
@@ -402,6 +402,10 @@ still cause this situation.
- 0xa40000
- The class containing stateless codec controls. These controls are
described in :ref:`codec-stateless-controls`.
+ * - ``V4L2_CTRL_CLASS_COLORIMETRY``
+ - 0xa50000
+ - The class containing colorimetry controls. These controls are
+ described in :ref:`colorimetry-controls`.
Return Value
============
--
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