diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0641-media-uapi-v4l2-core-Add-sensor-ancillary-data-V4L2-.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0641-media-uapi-v4l2-core-Add-sensor-ancillary-data-V4L2-.patch | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0641-media-uapi-v4l2-core-Add-sensor-ancillary-data-V4L2-.patch b/target/linux/bcm27xx/patches-5.4/950-0641-media-uapi-v4l2-core-Add-sensor-ancillary-data-V4L2-.patch new file mode 100644 index 0000000000..69414e381c --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0641-media-uapi-v4l2-core-Add-sensor-ancillary-data-V4L2-.patch @@ -0,0 +1,85 @@ +From 09f5e82f292a900d17a5205e54a35e24296bd9f7 Mon Sep 17 00:00:00 2001 +From: Naushir Patuck <naush@raspberrypi.com> +Date: Wed, 1 Apr 2020 08:46:29 +0100 +Subject: [PATCH] media: uapi: v4l2-core: Add sensor ancillary data + V4L2 foucc type. + +Add V4L2_META_FMT_SENSOR_DATA format 4CC. + +This new format will be used by the BCM2835 Unicam device to return +out camera sensor embedded data. + +Signed-off-by: Naushir Patuck <naush@raspberrypi.com> +--- + Documentation/media/uapi/v4l/meta-formats.rst | 1 + + .../uapi/v4l/pixfmt-meta-sensor-data.rst | 32 +++++++++++++++++++ + drivers/media/v4l2-core/v4l2-ioctl.c | 1 + + include/uapi/linux/videodev2.h | 1 + + 4 files changed, 35 insertions(+) + create mode 100644 Documentation/media/uapi/v4l/pixfmt-meta-sensor-data.rst + +--- a/Documentation/media/uapi/v4l/meta-formats.rst ++++ b/Documentation/media/uapi/v4l/meta-formats.rst +@@ -21,6 +21,7 @@ These formats are used for the :ref:`met + + pixfmt-meta-d4xx + pixfmt-meta-intel-ipu3 ++ pixfmt-meta-sensor-data + pixfmt-meta-uvc + pixfmt-meta-vsp1-hgo + pixfmt-meta-vsp1-hgt +--- /dev/null ++++ b/Documentation/media/uapi/v4l/pixfmt-meta-sensor-data.rst +@@ -0,0 +1,32 @@ ++.. Permission is granted to copy, distribute and/or modify this ++.. document under the terms of the GNU Free Documentation License, ++.. Version 1.1 or any later version published by the Free Software ++.. Foundation, with no Invariant Sections, no Front-Cover Texts ++.. and no Back-Cover Texts. A copy of the license is included at ++.. Documentation/media/uapi/fdl-appendix.rst. ++.. ++.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections ++ ++.. _v4l2-meta-fmt-sensor-data: ++ ++*********************************** ++V4L2_META_FMT_SENSOR_DATA ('SENS') ++*********************************** ++ ++Sensor Ancillary Metadata ++ ++Description ++=========== ++ ++This format describes ancillary data generated by a camera sensor and ++transmitted over a stream on the camera bus. Sensor vendors generally have their ++own custom format for this ancillary data. Some vendors follow a generic ++CSI-2/SMIA embedded data format as described in the `CSI-2 specification. ++<https://mipi.org/specifications/csi-2>`_ ++ ++The size of the embedded buffer is defined as a single line with a pixel width ++width specified in bytes. This is obtained by a call to the ++:c:type:`VIDIOC_SUBDEV_G_FMT` ioctl on the sensor subdevice where the ``pad`` ++field in :c:type:`v4l2_subdev_format` is set to 1. Note that this size is fixed ++and cannot be modified with a call to :c:type:`VIDIOC_SUBDEV_S_FMT`. ++ +--- a/drivers/media/v4l2-core/v4l2-ioctl.c ++++ b/drivers/media/v4l2-core/v4l2-ioctl.c +@@ -1332,6 +1332,7 @@ static void v4l_fill_fmtdesc(struct v4l2 + case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break; + case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break; + case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break; ++ case V4L2_META_FMT_SENSOR_DATA: descr = "Sensor Ancillary Metadata"; break; + + default: + /* Compressed formats */ +--- a/include/uapi/linux/videodev2.h ++++ b/include/uapi/linux/videodev2.h +@@ -768,6 +768,7 @@ struct v4l2_pix_format { + #define V4L2_META_FMT_VSP1_HGT v4l2_fourcc('V', 'S', 'P', 'T') /* R-Car VSP1 2-D Histogram */ + #define V4L2_META_FMT_UVC v4l2_fourcc('U', 'V', 'C', 'H') /* UVC Payload Header metadata */ + #define V4L2_META_FMT_D4XX v4l2_fourcc('D', '4', 'X', 'X') /* D4XX Payload Header metadata */ ++#define V4L2_META_FMT_SENSOR_DATA v4l2_fourcc('S', 'E', 'N', 'S') /* Sensor Ancillary metadata */ + + /* priv field value to indicates that subsequent fields are valid. */ + #define V4L2_PIX_FMT_PRIV_MAGIC 0xfeedcafe |