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d81c03f05e
These patches were generated from: https://github.com/raspberrypi/linux/commits/rpi-6.12.y With the following command: git format-patch -N v6.12.27..HEAD (HEAD -> 8d3206ee456a5ecdf9ddbfd8e5e231e4f0cd716e) Exceptions: - (def)configs patches - github workflows patches - applied & reverted patches - readme patches - wireless patches Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
86 lines
3.7 KiB
Diff
86 lines
3.7 KiB
Diff
From 0cafe0e9bbbad9bbe353c35a7a8f59c671159d1a Mon Sep 17 00:00:00 2001
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From: Naushir Patuck <naush@raspberrypi.com>
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Date: Wed, 1 Apr 2020 08:46:29 +0100
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Subject: [PATCH] media: uapi: v4l2-core: Add sensor ancillary data V4L2 foucc
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type.
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Add V4L2_META_FMT_SENSOR_DATA format 4CC.
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This new format will be used by the BCM2835 Unicam device to return
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out camera sensor embedded data.
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Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
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---
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.../userspace-api/media/v4l/meta-formats.rst | 1 +
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.../media/v4l/pixfmt-meta-sensor-data.rst | 32 +++++++++++++++++++
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drivers/media/v4l2-core/v4l2-ioctl.c | 1 +
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include/uapi/linux/videodev2.h | 1 +
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4 files changed, 35 insertions(+)
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create mode 100644 Documentation/userspace-api/media/v4l/pixfmt-meta-sensor-data.rst
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--- a/Documentation/userspace-api/media/v4l/meta-formats.rst
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+++ b/Documentation/userspace-api/media/v4l/meta-formats.rst
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@@ -17,6 +17,7 @@ These formats are used for the :ref:`met
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metafmt-intel-ipu3
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metafmt-pisp-be
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metafmt-rkisp1
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+ metafmt-sensor-data
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metafmt-uvc
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metafmt-vivid
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metafmt-vsp1-hgo
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--- /dev/null
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+++ b/Documentation/userspace-api/media/v4l/pixfmt-meta-sensor-data.rst
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@@ -0,0 +1,32 @@
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+.. Permission is granted to copy, distribute and/or modify this
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+.. document under the terms of the GNU Free Documentation License,
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+.. Version 1.1 or any later version published by the Free Software
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+.. Foundation, with no Invariant Sections, no Front-Cover Texts
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+.. and no Back-Cover Texts. A copy of the license is included at
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+.. Documentation/media/uapi/fdl-appendix.rst.
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+..
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+.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
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+
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+.. _v4l2-meta-fmt-sensor-data:
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+
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+***********************************
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+V4L2_META_FMT_SENSOR_DATA ('SENS')
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+***********************************
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+
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+Sensor Ancillary Metadata
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+
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+Description
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+===========
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+
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+This format describes ancillary data generated by a camera sensor and
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+transmitted over a stream on the camera bus. Sensor vendors generally have their
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+own custom format for this ancillary data. Some vendors follow a generic
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+CSI-2/SMIA embedded data format as described in the `CSI-2 specification.
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+<https://mipi.org/specifications/csi-2>`_
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+
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+The size of the embedded buffer is defined as a single line with a pixel width
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+width specified in bytes. This is obtained by a call to the
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+:c:type:`VIDIOC_SUBDEV_G_FMT` ioctl on the sensor subdevice where the ``pad``
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+field in :c:type:`v4l2_subdev_format` is set to 1. Note that this size is fixed
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+and cannot be modified with a call to :c:type:`VIDIOC_SUBDEV_S_FMT`.
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+
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--- a/drivers/media/v4l2-core/v4l2-ioctl.c
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+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
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@@ -1474,6 +1474,7 @@ static void v4l_fill_fmtdesc(struct v4l2
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case V4L2_META_FMT_GENERIC_CSI2_16: descr = "8-bit Generic Meta, 16b CSI-2"; break;
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case V4L2_META_FMT_GENERIC_CSI2_20: descr = "8-bit Generic Meta, 20b CSI-2"; break;
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case V4L2_META_FMT_GENERIC_CSI2_24: descr = "8-bit Generic Meta, 24b CSI-2"; break;
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+ case V4L2_META_FMT_SENSOR_DATA: descr = "Sensor Ancillary Metadata"; break;
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default:
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/* Compressed formats */
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--- a/include/uapi/linux/videodev2.h
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+++ b/include/uapi/linux/videodev2.h
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@@ -856,6 +856,7 @@ struct v4l2_pix_format {
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#define V4L2_META_FMT_UVC v4l2_fourcc('U', 'V', 'C', 'H') /* UVC Payload Header metadata */
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#define V4L2_META_FMT_D4XX v4l2_fourcc('D', '4', 'X', 'X') /* D4XX Payload Header metadata */
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#define V4L2_META_FMT_VIVID v4l2_fourcc('V', 'I', 'V', 'D') /* Vivid Metadata */
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+#define V4L2_META_FMT_SENSOR_DATA v4l2_fourcc('S', 'E', 'N', 'S') /* Sensor Ancillary metadata */
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/* Vendor specific - used for RK_ISP1 camera sub-system */
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#define V4L2_META_FMT_RK_ISP1_PARAMS v4l2_fourcc('R', 'K', '1', 'P') /* Rockchip ISP1 3A Parameters */
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