Subject: [PATCH 0/4] media: docs: Document pixel array properties Hans' patch "[PATCH] imx219: selection compliance fixes" sparkled a discussion on how the V4L2 selection targets have to be used in order to access an image sensor pixel array properties. The discussion shown how much under-specified that part was, so this is an attempt to provide a bit documentation for this. My feeling is that we're hijacking the existing targets for this use case and we should probably define new ones, considering how few users we have in mainline of them at the moment. On top Hans' patch with reworded commit message and minor updates. For reference, we're using the V4L2 selection targets in libcamera to retrieve the sensor pixel array properties to be reported to applications for calibration purposes. The currently defined pixel properties for libcamera are available here: https://git.linuxtv.org/libcamera.git/tree/src/libcamera/property_ids.yaml#n390 Thanks j Hans Verkuil (1): media: i2c: imx219: Selection compliance fixes Jacopo Mondi (3): media: docs: Describe pixel array properties media: docs: Describe targets for sensor properties media: docs: USe SUBDEV_G_SELECTION for sensor properties .../userspace-api/media/v4l/dev-subdev.rst | 85 +++++++++++++++++++ .../media/v4l/v4l2-selection-targets.rst | 49 +++++++++++ .../media/v4l/vidioc-subdev-g-selection.rst | 4 + drivers/media/i2c/imx219.c | 17 ++-- 4 files changed, 147 insertions(+), 8 deletions(-) -- 2.27.0
