diff options
Diffstat (limited to 'drivers/base/property.c')
| -rw-r--r-- | drivers/base/property.c | 39 |
1 files changed, 33 insertions, 6 deletions
diff --git a/drivers/base/property.c b/drivers/base/property.c index c1392743df9c..f626d5bbe806 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -928,22 +928,49 @@ bool fwnode_device_is_available(const struct fwnode_handle *fwnode) EXPORT_SYMBOL_GPL(fwnode_device_is_available); /** - * device_get_child_node_count - return the number of child nodes for device - * @dev: Device to count the child nodes for + * fwnode_get_child_node_count - return the number of child nodes for a given firmware node + * @fwnode: Pointer to the parent firmware node * - * Return: the number of child nodes for a given device. + * Return: the number of child nodes for a given firmware node. + */ +unsigned int fwnode_get_child_node_count(const struct fwnode_handle *fwnode) +{ + struct fwnode_handle *child; + unsigned int count = 0; + + fwnode_for_each_child_node(fwnode, child) + count++; + + return count; +} +EXPORT_SYMBOL_GPL(fwnode_get_child_node_count); + +/** + * fwnode_get_named_child_node_count - number of child nodes with given name + * @fwnode: Node which child nodes are counted. + * @name: String to match child node name against. + * + * Scan child nodes and count all the nodes with a specific name. Potential + * 'number' -ending after the 'at sign' for scanned names is ignored. + * E.g.:: + * fwnode_get_named_child_node_count(fwnode, "channel"); + * would match all the nodes:: + * channel { }, channel@0 {}, channel@0xabba {}... + * + * Return: the number of child nodes with a matching name for a given device. */ -unsigned int device_get_child_node_count(const struct device *dev) +unsigned int fwnode_get_named_child_node_count(const struct fwnode_handle *fwnode, + const char *name) { struct fwnode_handle *child; unsigned int count = 0; - device_for_each_child_node(dev, child) + fwnode_for_each_named_child_node(fwnode, child, name) count++; return count; } -EXPORT_SYMBOL_GPL(device_get_child_node_count); +EXPORT_SYMBOL_GPL(fwnode_get_named_child_node_count); bool device_dma_supported(const struct device *dev) { |