From 3f0a700624d0a4014998b2ed5c1f964aa1b784a6 Mon Sep 17 00:00:00 2001 From: Ricardo Ribalda Delgado Date: Mon, 7 Oct 2019 12:06:34 -0300 Subject: media: Documentation: media: Describe V4L2_CID_UNIT_CELL_SIZE New control to pass to userspace the width/height of a pixel. Which is needed for calibration and lens selection. Reviewed-by: Philipp Zabel Signed-off-by: Ricardo Ribalda Delgado Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- Documentation/media/uapi/v4l/ext-ctrls-image-source.rst | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'Documentation/media') diff --git a/Documentation/media/uapi/v4l/ext-ctrls-image-source.rst b/Documentation/media/uapi/v4l/ext-ctrls-image-source.rst index 2c3ab5796d76..2d3e2b83d6dd 100644 --- a/Documentation/media/uapi/v4l/ext-ctrls-image-source.rst +++ b/Documentation/media/uapi/v4l/ext-ctrls-image-source.rst @@ -55,3 +55,13 @@ Image Source Control IDs ``V4L2_CID_TEST_PATTERN_GREENB (integer)`` Test pattern green (next to blue) colour component. + +``V4L2_CID_UNIT_CELL_SIZE (struct)`` + This control returns the unit cell size in nanometers. The struct + :c:type:`v4l2_area` provides the width and the height in separate + fields to take into consideration asymmetric pixels. + This control does not take into consideration any possible hardware + binning. + The unit cell consists of the whole area of the pixel, sensitive and + non-sensitive. + This control is required for automatic calibration of sensors/cameras. -- cgit v1.2.1