Hi folks, This patchset reworks V4L2 fwnode endpoint parsing. It enables the use of endpoint configuration defaults that is available sensors and other drivers that only use a single endpoint. Well, the functionality was available already but no driver used it likely because of two reasons: lack of any examples in a non-trivial problem area as well as lack of a needed functionality to obtain through non-iterative means in the fwnode graph API. Also the fwnode framework did not provide the most convenient APIs to perform this for drivers.
Conversion from the iterative API is done for the omap3isp and ipu3-cio2 drivers. A downside here is that this adds code: what used to be done in the framework in a one-size-fits-all fashion is now the responsibility of the driver. The benefits (default settings and simplicity of the implementation from driver's point of view) are not really achievable without some of that. Also baked in the set is matching devices with endpoints by endpoint node rather than the device's node. This allows finding out more information than just the device bound (i.e. the port --- or endpoint --- through which it was bound). Compatibility support is provided for existing drivers by setting the fwnode to be matched based on the available endpoints. Drivers that use the async non-notifier API and have multiple ports will likely need special care and this is right now missing from the set, hence this is RFC for now. The set depends on a few other patches. They all can be found here: <URL:https://git.linuxtv.org/sailus/media_tree.git/log/?h=fwnode-linear> Sakari Ailus (8): v4l2-async: Use endpoint node, not device node, for fwnode match v4l2-async: Add v4l2_async_notifier_add_fwnode_remote_subdev v4l2-fwnode: Use v4l2_async_notifier_add_fwnode_remote_subdev omap3isp: Rework OF endpoint parsing v4l2-async: Safely clean up an uninitialised notifier ipu3-cio2: Clean up notifier's subdev list if parsing endpoints fails ipu3-cio2: Proceed with notifier init even if there are no subdevs ipu3-cio2: Parse information from firmware without using callbacks drivers/media/pci/intel/ipu3/ipu3-cio2.c | 97 ++++---- drivers/media/platform/am437x/am437x-vpfe.c | 2 +- drivers/media/platform/atmel/atmel-isc.c | 2 +- drivers/media/platform/atmel/atmel-isi.c | 2 +- drivers/media/platform/cadence/cdns-csi2rx.c | 2 +- drivers/media/platform/davinci/vpif_capture.c | 14 +- drivers/media/platform/exynos4-is/media-dev.c | 14 +- drivers/media/platform/omap3isp/isp.c | 334 +++++++++++++++----------- drivers/media/platform/pxa_camera.c | 2 +- drivers/media/platform/qcom/camss/camss.c | 10 +- drivers/media/platform/rcar_drif.c | 3 +- drivers/media/platform/renesas-ceu.c | 2 +- drivers/media/platform/stm32/stm32-dcmi.c | 2 +- drivers/media/platform/ti-vpe/cal.c | 2 +- drivers/media/platform/xilinx/xilinx-vipp.c | 13 +- drivers/media/v4l2-core/v4l2-async.c | 33 ++- drivers/media/v4l2-core/v4l2-fwnode.c | 12 +- drivers/staging/media/soc_camera/soc_camera.c | 14 +- include/media/v4l2-async.h | 24 ++ 19 files changed, 354 insertions(+), 230 deletions(-) -- 2.11.0
