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[v4,04/15] property: Call fwnode_graph_get_endpoint_by_id() for fwnode->secondary

Message ID 20210103231235.792999-5-djrscally@gmail.com
State Accepted
Commit acd418bfcfc415cf5e6414b6d1c6acfec850f290
Headers show
Series Add functionality to ipu3-cio2 driver allowing software_node connections to sensors on platforms designed for Windows | expand

Commit Message

Daniel Scally Jan. 3, 2021, 11:12 p.m. UTC 
This function is used to find fwnode endpoints against a device. In
some instances those endpoints are software nodes which are children of
fwnode->secondary. Add support to fwnode_graph_get_endpoint_by_id() to
find those endpoints by recursively calling itself passing the ptr to
fwnode->secondary in the event no endpoint is found for the primary.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Daniel Scally <djrscally@gmail.com>
---
Changes in v4:

	- None

 drivers/base/property.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/base/property.c b/drivers/base/property.c
index bc9c634df6df..ddba75d90af2 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -1163,7 +1163,14 @@  fwnode_graph_get_endpoint_by_id(const struct fwnode_handle *fwnode,
 		best_ep_id = fwnode_ep.id;
 	}
 
-	return best_ep;
+	if (best_ep)
+		return best_ep;
+
+	if (fwnode && !IS_ERR_OR_NULL(fwnode->secondary))
+		return fwnode_graph_get_endpoint_by_id(fwnode->secondary, port,
+						       endpoint, flags);
+
+	return NULL;
 }
 EXPORT_SYMBOL_GPL(fwnode_graph_get_endpoint_by_id);