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Subject[PATCH v11 1/9] device property: Add remote endpoint to devcon matcher
Date
From: Prashant Malani <pmalani@chromium.org>

When searching the device graph for device matches, check the
remote-endpoint itself for a match.

Some drivers register devices for individual endpoints. This allows
the matcher code to evaluate those for a match too, instead
of only looking at the remote parent devices. This is required when a
device supports two mode switches in its endpoints, so we can't simply
register the mode switch with the parent node.

Signed-off-by: Prashant Malani <pmalani@chromium.org>
Signed-off-by: Pin-yen Lin <treapking@chromium.org>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Tested-by: Chen-Yu Tsai <wenst@chromium.org>

---

Changes in v11:
- Added missing fwnode_handle_put in drivers/base/property.c

Changes in v10:
- Collected Reviewed-by and Tested-by tags

Changes in v6:
- New in v6

drivers/base/property.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)

diff --git a/drivers/base/property.c b/drivers/base/property.c
index 2a5a37fcd998..e6f915b72eb7 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -1223,6 +1223,22 @@ static unsigned int fwnode_graph_devcon_matches(struct fwnode_handle *fwnode,
break;
}

+ /*
+ * Some drivers may register devices for endpoints. Check
+ * the remote-endpoints for matches in addition to the remote
+ * port parent.
+ */
+ node = fwnode_graph_get_remote_endpoint(ep);
+ if (fwnode_device_is_available(node)) {
+ ret = match(node, con_id, data);
+ if (ret) {
+ if (matches)
+ matches[count] = ret;
+ count++;
+ }
+ }
+ fwnode_handle_put(node);
+
node = fwnode_graph_get_remote_port_parent(ep);
if (!fwnode_device_is_available(node)) {
fwnode_handle_put(node);
--
2.39.1.519.gcb327c4b5f-goog
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