/*
   * Taken from Linux v4.9 drivers/of/address.c
   *
   * Modified for U-Boot
   * Copyright (c) 2017 Google, Inc
   *
   * SPDX-License-Identifier:	GPL-2.0+
   */
  
  #ifndef _DM_OF_ADDR_H
  #define _DM_OF_ADDR_H
  
  /**
   * of_translate_address() - translate a device-tree address to a CPU address
   *
   * Translate an address from the device-tree into a CPU physical address,
   * this walks up the tree and applies the various bus mappings on the  way.
   *
   * Note: We consider that crossing any level with #size-cells == 0 to mean
   * that translation is impossible (that is we are not dealing with a value
   * that can be mapped to a cpu physical address). This is not really specified
   * that way, but this is traditionally the way IBM at least do things
   *
   * @np: node to check
   * @in_addr: pointer to input address
   * @return translated address or OF_BAD_ADDR on error
   */
  u64 of_translate_address(const struct device_node *no, const __be32 *in_addr);
  
  /**
   * of_get_address() - obtain an address from a node
   *
   * Extract an address from a node, returns the region size and the address
   * space flags too. The PCI version uses a BAR number instead of an absolute
   * index.
   *
   * @np: Node to check
   * @index: Index of address to read (0 = first)
   * @size: place to put size on success
   * @flags: place to put flags on success
   * @return pointer to address which can be read
   */
  const __be32 *of_get_address(const struct device_node *no, int index,
  			     u64 *size, unsigned int *flags);
  
  struct resource;
  
  /**
   * of_address_to_resource() - translate device tree address to resource
   *
   * Note that if your address is a PIO address, the conversion will fail if
   * the physical address can't be internally converted to an IO token with
   * pci_address_to_pio(), that is because it's either called to early or it
   * can't be matched to any host bridge IO space
   *
   * @np: node to check
   * @index: index of address to read (0 = first)
   * @r: place to put resource information
   * @return 0 if OK, -ve on error
   */
  int of_address_to_resource(const struct device_node *no, int index,
  			   struct resource *r);
  
  #endif