On Thu, Jan 12, 2023 at 12:20:56PM +0800, Pin-yen Lin wrote:
> From: Prashant Malani <pmalani@xxxxxxxxxxxx>
>
> 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@xxxxxxxxxxxx>
> Signed-off-by: Pin-yen Lin <treapking@xxxxxxxxxxxx>
> Reviewed-by: Chen-Yu Tsai <wenst@xxxxxxxxxxxx>
> Tested-by: Chen-Yu Tsai <wenst@xxxxxxxxxxxx>
Acked-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
> ---
>
> Changes in v10:
> - Collected Reviewed-by and Tested-by tags
>
> Changes in v6:
> - New in v6
>
> drivers/base/property.c | 15 +++++++++++++++
> 1 file changed, 15 insertions(+)
>
> diff --git a/drivers/base/property.c b/drivers/base/property.c
> index 2a5a37fcd998..48877af4e444 100644
> --- a/drivers/base/property.c
> +++ b/drivers/base/property.c
> @@ -1223,6 +1223,21 @@ 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++;
> + }
> + }
> +
> node = fwnode_graph_get_remote_port_parent(ep);
> if (!fwnode_device_is_available(node)) {
> fwnode_handle_put(node);
> --
> 2.39.0.314.g84b9a713c41-goog
--
heikki
