mirror of
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62b7f5931c
bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
(cherry-picked from commit f07e572f64)
62 lines
2.6 KiB
Diff
62 lines
2.6 KiB
Diff
From 16a7ef36055e414560143ebcb95113f9513ca49d Mon Sep 17 00:00:00 2001
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From: Jacopo Mondi <jacopo@jmondi.org>
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Date: Sat, 9 May 2020 11:04:46 +0200
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Subject: [PATCH] media: v4l2-ctrl: Document
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V4L2_CID_CAMERA_ORIENTATION
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Add documentation for the V4L2_CID_CAMERA_ORIENTATION camera
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control. The newly added read-only control reports the camera device
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orientation relative to the usage orientation of the system the camera
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is installed on.
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Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
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Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Commit 9397a83f40183eeafd5c787af2240ed0d6b26daa upstream
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Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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---
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.../media/uapi/v4l/ext-ctrls-camera.rst | 30 +++++++++++++++++++
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1 file changed, 30 insertions(+)
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--- a/Documentation/media/uapi/v4l/ext-ctrls-camera.rst
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+++ b/Documentation/media/uapi/v4l/ext-ctrls-camera.rst
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@@ -510,6 +510,36 @@ enum v4l2_scene_mode -
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value down. A value of zero stops the motion if one is in progress
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and has no effect otherwise.
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+``V4L2_CID_CAMERA_ORIENTATION (menu)``
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+ This read-only control describes the camera orientation by reporting its
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+ mounting position on the device where the camera is installed. The control
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+ value is constant and not modifiable by software. This control is
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+ particularly meaningful for devices which have a well defined orientation,
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+ such as phones, laptops and portable devices since the control is expressed
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+ as a position relative to the device's intended usage orientation. For
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+ example, a camera installed on the user-facing side of a phone, a tablet or
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+ a laptop device is said to be have ``V4L2_CAMERA_ORIENTATION_FRONT``
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+ orientation, while a camera installed on the opposite side of the front one
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+ is said to be have ``V4L2_CAMERA_ORIENTATION_BACK`` orientation. Camera
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+ sensors not directly attached to the device, or attached in a way that
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+ allows them to move freely, such as webcams and digital cameras, are said to
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+ have the ``V4L2_CAMERA_ORIENTATION_EXTERNAL`` orientation.
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+
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+
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+
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+.. flat-table::
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+ :header-rows: 0
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+ :stub-columns: 0
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+
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+ * - ``V4L2_CAMERA_ORIENTATION_FRONT``
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+ - The camera is oriented towards the user facing side of the device.
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+ * - ``V4L2_CAMERA_ORIENTATION_BACK``
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+ - The camera is oriented towards the back facing side of the device.
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+ * - ``V4L2_CAMERA_ORIENTATION_EXTERNAL``
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+ - The camera is not directly attached to the device and is freely movable.
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+
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+
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+
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.. [#f1]
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This control may be changed to a menu control in the future, if more
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options are required.
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