diff options
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/property.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/base/property.c b/drivers/base/property.c index 22849a89a8b5..8a53b8f1db66 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -1311,3 +1311,35 @@ fwnode_graph_get_remote_endpoint(struct fwnode_handle *fwnode) return endpoint; } EXPORT_SYMBOL_GPL(fwnode_graph_get_remote_endpoint); + +/** + * fwnode_graph_parse_endpoint - parse common endpoint node properties + * @fwnode: pointer to endpoint fwnode_handle + * @endpoint: pointer to the fwnode endpoint data structure + * + * Parse @fwnode representing a graph endpoint node and store the + * information in @endpoint. The caller must hold a reference to + * @fwnode. + */ +int fwnode_graph_parse_endpoint(struct fwnode_handle *fwnode, + struct fwnode_endpoint *endpoint) +{ + struct fwnode_handle *port_fwnode = fwnode_get_parent(fwnode); + + memset(endpoint, 0, sizeof(*endpoint)); + + endpoint->local_fwnode = fwnode; + + if (is_acpi_node(port_fwnode)) { + fwnode_property_read_u32(port_fwnode, "port", &endpoint->port); + fwnode_property_read_u32(fwnode, "endpoint", &endpoint->id); + } else { + fwnode_property_read_u32(port_fwnode, "reg", &endpoint->port); + fwnode_property_read_u32(fwnode, "reg", &endpoint->id); + } + + fwnode_handle_put(port_fwnode); + + return 0; +} +EXPORT_SYMBOL(fwnode_graph_parse_endpoint); |