--- /dev/null
+/*
+ * property.h - Unified device property interface.
+ *
+ * Copyright (C) 2014, Intel Corporation
+ * Authors: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+ * Mika Westerberg <mika.westerberg@linux.intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _LINUX_PROPERTY_H_
+#define _LINUX_PROPERTY_H_
+
+#include <linux/fwnode.h>
+#include <linux/types.h>
+
+struct device;
+
+enum dev_prop_type {
+ DEV_PROP_U8,
+ DEV_PROP_U16,
+ DEV_PROP_U32,
+ DEV_PROP_U64,
+ DEV_PROP_STRING,
+ DEV_PROP_MAX,
+};
+
+bool device_property_present(struct device *dev, const char *propname);
+int device_property_read_u8_array(struct device *dev, const char *propname,
+ u8 *val, size_t nval);
+int device_property_read_u16_array(struct device *dev, const char *propname,
+ u16 *val, size_t nval);
+int device_property_read_u32_array(struct device *dev, const char *propname,
+ u32 *val, size_t nval);
+int device_property_read_u64_array(struct device *dev, const char *propname,
+ u64 *val, size_t nval);
+int device_property_read_string_array(struct device *dev, const char *propname,
+ const char **val, size_t nval);
+int device_property_read_string(struct device *dev, const char *propname,
+ const char **val);
+
+bool fwnode_property_present(struct fwnode_handle *fwnode, const char *propname);
+int fwnode_property_read_u8_array(struct fwnode_handle *fwnode,
+ const char *propname, u8 *val,
+ size_t nval);
+int fwnode_property_read_u16_array(struct fwnode_handle *fwnode,
+ const char *propname, u16 *val,
+ size_t nval);
+int fwnode_property_read_u32_array(struct fwnode_handle *fwnode,
+ const char *propname, u32 *val,
+ size_t nval);
+int fwnode_property_read_u64_array(struct fwnode_handle *fwnode,
+ const char *propname, u64 *val,
+ size_t nval);
+int fwnode_property_read_string_array(struct fwnode_handle *fwnode,
+ const char *propname, const char **val,
+ size_t nval);
+int fwnode_property_read_string(struct fwnode_handle *fwnode,
+ const char *propname, const char **val);
+
+struct fwnode_handle *device_get_next_child_node(struct device *dev,
+ struct fwnode_handle *child);
+
+#define device_for_each_child_node(dev, child) \
+ for (child = device_get_next_child_node(dev, NULL); child; \
+ child = device_get_next_child_node(dev, child))
+
+void fwnode_handle_put(struct fwnode_handle *fwnode);
+
+unsigned int device_get_child_node_count(struct device *dev);
+
+static inline bool device_property_read_bool(struct device *dev,
+ const char *propname)
+{
+ return device_property_present(dev, propname);
+}
+
+static inline int device_property_read_u8(struct device *dev,
+ const char *propname, u8 *val)
+{
+ return device_property_read_u8_array(dev, propname, val, 1);
+}
+
+static inline int device_property_read_u16(struct device *dev,
+ const char *propname, u16 *val)
+{
+ return device_property_read_u16_array(dev, propname, val, 1);
+}
+
+static inline int device_property_read_u32(struct device *dev,
+ const char *propname, u32 *val)
+{
+ return device_property_read_u32_array(dev, propname, val, 1);
+}
+
+static inline int device_property_read_u64(struct device *dev,
+ const char *propname, u64 *val)
+{
+ return device_property_read_u64_array(dev, propname, val, 1);
+}
+
+static inline bool fwnode_property_read_bool(struct fwnode_handle *fwnode,
+ const char *propname)
+{
+ return fwnode_property_present(fwnode, propname);
+}
+
+static inline int fwnode_property_read_u8(struct fwnode_handle *fwnode,
+ const char *propname, u8 *val)
+{
+ return fwnode_property_read_u8_array(fwnode, propname, val, 1);
+}
+
+static inline int fwnode_property_read_u16(struct fwnode_handle *fwnode,
+ const char *propname, u16 *val)
+{
+ return fwnode_property_read_u16_array(fwnode, propname, val, 1);
+}
+
+static inline int fwnode_property_read_u32(struct fwnode_handle *fwnode,
+ const char *propname, u32 *val)
+{
+ return fwnode_property_read_u32_array(fwnode, propname, val, 1);
+}
+
+static inline int fwnode_property_read_u64(struct fwnode_handle *fwnode,
+ const char *propname, u64 *val)
+{
+ return fwnode_property_read_u64_array(fwnode, propname, val, 1);
+}
+
+/**
+ * struct property_entry - "Built-in" device property representation.
+ * @name: Name of the property.
+ * @type: Type of the property.
+ * @nval: Number of items of type @type making up the value.
+ * @value: Value of the property (an array of @nval items of type @type).
+ */
+struct property_entry {
+ const char *name;
+ enum dev_prop_type type;
+ size_t nval;
+ union {
+ void *raw_data;
+ u8 *u8_data;
+ u16 *u16_data;
+ u32 *u32_data;
+ u64 *u64_data;
+ const char **str;
+ } value;
+};
+
+/**
+ * struct property_set - Collection of "built-in" device properties.
+ * @fwnode: Handle to be pointed to by the fwnode field of struct device.
+ * @properties: Array of properties terminated with a null entry.
+ */
+struct property_set {
+ struct fwnode_handle fwnode;
+ struct property_entry *properties;
+};
+
+void device_add_property_set(struct device *dev, struct property_set *pset);
+
+#endif /* _LINUX_PROPERTY_H_ */
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