On Thu, 5 Dec 2024 at 06:54, Miquel Raynal miquel.raynal@bootlin.com wrote:
There are already several helpers to find a udevice based on its position in a device tree, like getting a child or a node pointed by a phandle, but there was no support for graph endpoints, which are very common in display pipelines.
Add a new helper, named uclass_get_device_by_endpoint() which enters the child graph reprensentation, looks for a specific port, then follows the remote endpoint, and finally retrieves the first parent of the given uclass_id.
This is a very handy and straightforward way to get a bridge or a panel handle.
Signed-off-by: Miquel Raynal miquel.raynal@bootlin.com
drivers/core/uclass.c | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++ include/dm/uclass.h | 21 +++++++++++++++++ 2 files changed, 83 insertions(+)
Reviewed-by: Simon Glass sjg@chromium.org