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software node: Allow register and unregister software node groups 

Sometimes it's more convenient to register a set of individual software nodes
grouped together. Add couple of functions for that.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Rafael J. Wysocki <rjw@rjwysocki.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
This commit is contained in:
Andy Shevchenko 2020-04-08 19:09:02 +03:00
parent 96489ae170
commit 02094d5487
2 changed files with 51 additions and 0 deletions
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48
drivers/base/swnode.c
View File

@ -726,6 +726,54 @@ void software_node_unregister_nodes(const struct software_node *nodes)
}
EXPORT_SYMBOL_GPL(software_node_unregister_nodes);
/**
* software_node_register_node_group - Register a group of software nodes
* @node_group: NULL terminated array of software node pointers to be registered
*
* Register multiple software nodes at once.
*/
int software_node_register_node_group(const struct software_node **node_group)
{
unsigned int i;
int ret;
if (!node_group)
return 0;
for (i = 0; node_group[i]; i++) {
ret = software_node_register(node_group[i]);
if (ret) {
software_node_unregister_node_group(node_group);
return ret;
}
}
return 0;
}
EXPORT_SYMBOL_GPL(software_node_register_node_group);
/**
* software_node_unregister_node_group - Unregister a group of software nodes
* @node_group: NULL terminated array of software node pointers to be unregistered
*
* Unregister multiple software nodes at once.
*/
void software_node_unregister_node_group(const struct software_node **node_group)
{
struct swnode *swnode;
unsigned int i;
if (!node_group)
return;
for (i = 0; node_group[i]; i++) {
swnode = software_node_to_swnode(node_group[i]);
if (swnode)
fwnode_remove_software_node(&swnode->fwnode);
}
}
EXPORT_SYMBOL_GPL(software_node_unregister_node_group);
/**
* software_node_register - Register static software node
* @node: The software node to be registered

3
include/linux/property.h
View File

@ -440,6 +440,9 @@ software_node_find_by_name(const struct software_node *parent,
int software_node_register_nodes(const struct software_node *nodes);
void software_node_unregister_nodes(const struct software_node *nodes);
int software_node_register_node_group(const struct software_node **node_group);
void software_node_unregister_node_group(const struct software_node **node_group);
int software_node_register(const struct software_node *node);
int software_node_notify(struct device *dev, unsigned long action);