diff options
Diffstat (limited to 'drivers/acpi/property.c')
| -rw-r--r-- | drivers/acpi/property.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c index 3eacf474e1e3..e601c4511a8b 100644 --- a/drivers/acpi/property.c +++ b/drivers/acpi/property.c @@ -1317,6 +1317,52 @@ acpi_fwnode_get_reference_args(const struct fwnode_handle *fwnode, args_count, args); } +static const char *acpi_fwnode_get_name(const struct fwnode_handle *fwnode) +{ + const struct acpi_device *adev; + struct fwnode_handle *parent; + + /* Is this the root node? */ + parent = fwnode_get_parent(fwnode); + if (!parent) + return "\\"; + + fwnode_handle_put(parent); + + if (is_acpi_data_node(fwnode)) { + const struct acpi_data_node *dn = to_acpi_data_node(fwnode); + + return dn->name; + } + + adev = to_acpi_device_node(fwnode); + if (WARN_ON(!adev)) + return NULL; + + return acpi_device_bid(adev); +} + +static const char * +acpi_fwnode_get_name_prefix(const struct fwnode_handle *fwnode) +{ + struct fwnode_handle *parent; + + /* Is this the root node? */ + parent = fwnode_get_parent(fwnode); + if (!parent) + return ""; + + /* Is this 2nd node from the root? */ + parent = fwnode_get_next_parent(parent); + if (!parent) + return ""; + + fwnode_handle_put(parent); + + /* ACPI device or data node. */ + return "."; +} + static struct fwnode_handle * acpi_fwnode_get_parent(struct fwnode_handle *fwnode) { @@ -1357,6 +1403,8 @@ acpi_fwnode_device_get_match_data(const struct fwnode_handle *fwnode, .get_parent = acpi_node_get_parent, \ .get_next_child_node = acpi_get_next_subnode, \ .get_named_child_node = acpi_fwnode_get_named_child_node, \ + .get_name = acpi_fwnode_get_name, \ + .get_name_prefix = acpi_fwnode_get_name_prefix, \ .get_reference_args = acpi_fwnode_get_reference_args, \ .graph_get_next_endpoint = \ acpi_graph_get_next_endpoint, \ |