1 files changed, 143 insertions, 0 deletions

diff --git a/include/linux/property.h b/include/linux/property.h
new file mode 100644
index 000000000000..a6a3d98bd7e9
--- /dev/null
+++ b/include/linux/property.h
@@ -0,0 +1,143 @@
+/*
+ * 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/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);
+
+enum fwnode_type {
+        FWNODE_INVALID = 0,
+        FWNODE_OF,
+        FWNODE_ACPI,
+};
+
+struct fwnode_handle {
+        enum fwnode_type type;
+};
+
+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);
+}
+
+#endif /* _LINUX_PROPERTY_H_ */