Merge tag 'devprop-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull device properties framework updates from Rafael Wysocki:
 "This introduces 'software nodes' that are analogous to the DT and ACPI
  firmware nodes except that they can be created by drivers themselves
  and do a couple of assorted cleanups.

  Specifics:

   - Introduce "software nodes", analogous to the DT and ACPI firmware
     nodes except that they can be created by kernel code, in order to
     complement fwnodes representing real firmware nodes when they are
     incomplete (for example missing device properties) and to supply
     the primary fwnode when the firmware lacks hardware description for
     a device completely, and replace the "property_set" struct
     fwnode_handle type with software nodes (Heikki Krogerus).

   - Clean up the just introduced software nodes support and fix a
     commet in the graph-handling code (Colin Ian King, Marco Felsch)"

* tag 'devprop-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  device property: fix fwnode_graph_get_next_endpoint() documentation
  drivers: base: swnode: remove need for a temporary string for the node name
  device property: Remove struct property_set
  device property: Move device_add_properties() to swnode.c
  drivers: base: Introducing software nodes to the firmware node framework
  ACPI / glue: Add acpi_platform_notify() function
  drivers core: Prepare support for multiple platform notifications
  driver core: platform: Remove duplicated device_remove_properties() call

2 files changed, 22 insertions, 0 deletions

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 4b3283cb09ab..87715f20b69a 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -1331,4 +1331,14 @@ static inline int find_acpi_cpu_cache_topology(unsigned int cpu, int level)
 }
 #endif
 
+#ifdef CONFIG_ACPI
+extern int acpi_platform_notify(struct device *dev, enum kobject_action action);
+#else
+static inline int
+acpi_platform_notify(struct device *dev, enum kobject_action action)
+{
+	return 0;
+}
+#endif
+
 #endif	/*_LINUX_ACPI_H*/
diff --git a/include/linux/property.h b/include/linux/property.h
index ac8a1ebc4c1b..3789ec755fb6 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -311,4 +311,16 @@ fwnode_graph_get_remote_node(const struct fwnode_handle *fwnode, u32 port,
 int fwnode_graph_parse_endpoint(const struct fwnode_handle *fwnode,
 				struct fwnode_endpoint *endpoint);
 
+/* -------------------------------------------------------------------------- */
+/* Software fwnode support - when HW description is incomplete or missing */
+
+bool is_software_node(const struct fwnode_handle *fwnode);
+
+int software_node_notify(struct device *dev, unsigned long action);
+
+struct fwnode_handle *
+fwnode_create_software_node(const struct property_entry *properties,
+			    const struct fwnode_handle *parent);
+void fwnode_remove_software_node(struct fwnode_handle *fwnode);
+
 #endif /* _LINUX_PROPERTY_H_ */