of: dynamic: Introduce of_changeset_add_prop_bool()

APIs to add some properties in a changeset exist but nothing to add a DT
boolean property (i.e. a property without any values).

Fill this lack with of_changeset_add_prop_bool().

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Link: https://lore.kernel.org/r/20240527161450.326615-16-herve.codina@bootlin.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>

diff --git a/drivers/of/dynamic.c b/drivers/of/dynamic.c
index 70011a98c500fb580d33bc71ebc52c50f7e05048..110104a936d9c1ff6817218430b23158ef94d4ee 100644 (file)
--- a/drivers/of/dynamic.c
+++ b/drivers/of/dynamic.c
@@ -1047,3 +1047,28 @@ int of_changeset_add_prop_u32_array(struct of_changeset *ocs,
        return of_changeset_add_prop_helper(ocs, np, &prop);
 }
 EXPORT_SYMBOL_GPL(of_changeset_add_prop_u32_array);
+
+/**
+ * of_changeset_add_prop_bool - Add a boolean property (i.e. a property without
+ * any values) to a changeset.
+ *
+ * @ocs:       changeset pointer
+ * @np:                device node pointer
+ * @prop_name: name of the property to be added
+ *
+ * Create a boolean property and add it to a changeset.
+ *
+ * Return: 0 on success, a negative error value in case of an error.
+ */
+int of_changeset_add_prop_bool(struct of_changeset *ocs, struct device_node *np,
+                              const char *prop_name)
+{
+       struct property prop;
+
+       prop.name = (char *)prop_name;
+       prop.length = 0;
+       prop.value = NULL;
+
+       return of_changeset_add_prop_helper(ocs, np, &prop);
+}
+EXPORT_SYMBOL_GPL(of_changeset_add_prop_bool);

diff --git a/include/linux/of.h b/include/linux/of.h
index ee9a385a13db634f8902605b60a78e7bce9f73bf..13cf7a43b47338aa8c18cac62491b1d8c83eda5a 100644 (file)
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -1652,6 +1652,9 @@ static inline int of_changeset_add_prop_u32(struct of_changeset *ocs,
        return of_changeset_add_prop_u32_array(ocs, np, prop_name, &val, 1);
 }
 
+int of_changeset_add_prop_bool(struct of_changeset *ocs, struct device_node *np,
+                              const char *prop_name);
+
 #else /* CONFIG_OF_DYNAMIC */
 static inline int of_reconfig_notifier_register(struct notifier_block *nb)
 {