Hi, This small series add a new entity operation which will aid capture drivers to map a port/endpoint in DT to a media graph pad. I looked around and in my experience most drivers assume the DT port number is the same as the media pad number.
This might be true for most devices but there are cases where this mapping do not hold true. This series is implemented support to the ongoing ADV748x work by Kieran Bingham, [1]. In his work he have a driver which registers more then one subdevice. So when a driver finds this subdevice it must be able to ask the subdevice itself which pad number correspond to the DT endpoint the driver used to bind subdevice in the first place. I have updated my R-Car CSI-2 patch series to use this new function to ask it's subdevice to resolve the media pad. 1. [PATCH 0/5] RFC: ADV748x HDMI/Analog video receiver Niklas Söderlund (2): media: entity: Add pad_from_dt_regs entity operation media: entity: Add media_entity_pad_from_dt_regs() function drivers/media/media-entity.c | 21 +++++++++++++++++++++ include/media/media-entity.h | 26 ++++++++++++++++++++++++++ 2 files changed, 47 insertions(+) -- 2.12.2
