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-rw-r--r--include/dt-bindings/power/amlogic,c3-pwrc.h2
-rw-r--r--include/linux/of.h46
-rw-r--r--include/linux/of_graph.h4
3 files changed, 36 insertions, 16 deletions
diff --git a/include/dt-bindings/power/amlogic,c3-pwrc.h b/include/dt-bindings/power/amlogic,c3-pwrc.h
index 1d98a25b08a4..61759df4b2e7 100644
--- a/include/dt-bindings/power/amlogic,c3-pwrc.h
+++ b/include/dt-bindings/power/amlogic,c3-pwrc.h
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: (GPL-2.0+ or MIT) */
+/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
/*
* Copyright (c) 2023 Amlogic, Inc.
* Author: hongyu chen1 <hongyu.chen1@amlogic.com>
diff --git a/include/linux/of.h b/include/linux/of.h
index 331e05918f11..4f24e33d67a6 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -13,6 +13,7 @@
*/
#include <linux/types.h>
#include <linux/bitops.h>
+#include <linux/cleanup.h>
#include <linux/errno.h>
#include <linux/kobject.h>
#include <linux/mod_devicetable.h>
@@ -134,6 +135,7 @@ static inline struct device_node *of_node_get(struct device_node *node)
}
static inline void of_node_put(struct device_node *node) { }
#endif /* !CONFIG_OF_DYNAMIC */
+DEFINE_FREE(device_node, struct device_node *, if (_T) of_node_put(_T))
/* Pointer for first entry in chain of all nodes. */
extern struct device_node *of_root;
@@ -180,11 +182,6 @@ static inline bool is_of_node(const struct fwnode_handle *fwnode)
&__of_fwnode_handle_node->fwnode : NULL; \
})
-static inline bool of_have_populated_dt(void)
-{
- return of_root != NULL;
-}
-
static inline bool of_node_is_root(const struct device_node *node)
{
return node && (node->parent == NULL);
@@ -364,9 +361,6 @@ extern struct device_node *of_get_cpu_state_node(struct device_node *cpu_node,
int index);
extern u64 of_get_cpu_hwid(struct device_node *cpun, unsigned int thread);
-#define for_each_property_of_node(dn, pp) \
- for (pp = dn->properties; pp != NULL; pp = pp->next)
-
extern int of_n_addr_cells(struct device_node *np);
extern int of_n_size_cells(struct device_node *np);
extern const struct of_device_id *of_match_node(
@@ -557,11 +551,6 @@ static inline struct device_node *of_find_node_with_property(
#define of_fwnode_handle(node) NULL
-static inline bool of_have_populated_dt(void)
-{
- return false;
-}
-
static inline struct device_node *of_get_compatible_child(const struct device_node *parent,
const char *compatible)
{
@@ -900,6 +889,9 @@ static inline int of_prop_val_eq(struct property *p1, struct property *p2)
!memcmp(p1->value, p2->value, (size_t)p1->length);
}
+#define for_each_property_of_node(dn, pp) \
+ for (pp = dn->properties; pp != NULL; pp = pp->next)
+
#if defined(CONFIG_OF) && defined(CONFIG_NUMA)
extern int of_node_to_nid(struct device_node *np);
#else
@@ -1436,6 +1428,13 @@ static inline int of_property_read_s32(const struct device_node *np,
#define for_each_child_of_node(parent, child) \
for (child = of_get_next_child(parent, NULL); child != NULL; \
child = of_get_next_child(parent, child))
+
+#define for_each_child_of_node_scoped(parent, child) \
+ for (struct device_node *child __free(device_node) = \
+ of_get_next_child(parent, NULL); \
+ child != NULL; \
+ child = of_get_next_child(parent, child))
+
#define for_each_available_child_of_node(parent, child) \
for (child = of_get_next_available_child(parent, NULL); child != NULL; \
child = of_get_next_available_child(parent, child))
@@ -1443,6 +1442,12 @@ static inline int of_property_read_s32(const struct device_node *np,
for (child = of_get_next_reserved_child(parent, NULL); child != NULL; \
child = of_get_next_reserved_child(parent, child))
+#define for_each_available_child_of_node_scoped(parent, child) \
+ for (struct device_node *child __free(device_node) = \
+ of_get_next_available_child(parent, NULL); \
+ child != NULL; \
+ child = of_get_next_available_child(parent, child))
+
#define for_each_of_cpu_node(cpu) \
for (cpu = of_get_next_cpu_node(NULL); cpu != NULL; \
cpu = of_get_next_cpu_node(cpu))
@@ -1645,6 +1650,21 @@ static inline bool of_device_is_system_power_controller(const struct device_node
return of_property_read_bool(np, "system-power-controller");
}
+/**
+ * of_have_populated_dt() - Has DT been populated by bootloader
+ *
+ * Return: True if a DTB has been populated by the bootloader and it isn't the
+ * empty builtin one. False otherwise.
+ */
+static inline bool of_have_populated_dt(void)
+{
+#ifdef CONFIG_OF
+ return of_property_present(of_root, "compatible");
+#else
+ return false;
+#endif
+}
+
/*
* Overlay support
*/
diff --git a/include/linux/of_graph.h b/include/linux/of_graph.h
index 4d7756087b6b..a4bea62bfa29 100644
--- a/include/linux/of_graph.h
+++ b/include/linux/of_graph.h
@@ -41,7 +41,7 @@ struct of_endpoint {
bool of_graph_is_present(const struct device_node *node);
int of_graph_parse_endpoint(const struct device_node *node,
struct of_endpoint *endpoint);
-int of_graph_get_endpoint_count(const struct device_node *np);
+unsigned int of_graph_get_endpoint_count(const struct device_node *np);
struct device_node *of_graph_get_port_by_id(struct device_node *node, u32 id);
struct device_node *of_graph_get_next_endpoint(const struct device_node *parent,
struct device_node *previous);
@@ -68,7 +68,7 @@ static inline int of_graph_parse_endpoint(const struct device_node *node,
return -ENOSYS;
}
-static inline int of_graph_get_endpoint_count(const struct device_node *np)
+static inline unsigned int of_graph_get_endpoint_count(const struct device_node *np)
{
return 0;
}