/*
   * Copyright (c) 2014 Google, Inc
   *
   * SPDX-License-Identifier:	GPL-2.0+
   */
  
  #include <common.h>
  #include <dm.h>

  struct simple_bus_plat {
  	u32 base;
  	u32 size;
  	u32 target;
  };
  
  fdt_addr_t simple_bus_translate(struct udevice *dev, fdt_addr_t addr)
  {
  	struct simple_bus_plat *plat = dev_get_uclass_platdata(dev);
  
  	if (addr >= plat->base && addr < plat->base + plat->size)
  		addr = (addr - plat->base) + plat->target;
  
  	return addr;
  }

  static int simple_bus_post_bind(struct udevice *dev)
  {

  #if CONFIG_IS_ENABLED(OF_PLATDATA)
  	return 0;
  #else

  	u32 cell[3];
  	int ret;

  	ret = dev_read_u32_array(dev, "ranges", cell, ARRAY_SIZE(cell));

  	if (!ret) {
  		struct simple_bus_plat *plat = dev_get_uclass_platdata(dev);
  
  		plat->base = cell[0];
  		plat->target = cell[1];
  		plat->size = cell[2];
  	}

  	return dm_scan_fdt_dev(dev);

  #endif

  }
  
  UCLASS_DRIVER(simple_bus) = {
  	.id		= UCLASS_SIMPLE_BUS,
  	.name		= "simple_bus",
  	.post_bind	= simple_bus_post_bind,

  	.per_device_platdata_auto_alloc_size = sizeof(struct simple_bus_plat),

  };
  
  static const struct udevice_id generic_simple_bus_ids[] = {
  	{ .compatible = "simple-bus" },

  	{ .compatible = "simple-mfd" },

  	{ }
  };
  
  U_BOOT_DRIVER(simple_bus_drv) = {
  	.name	= "generic_simple_bus",
  	.id	= UCLASS_SIMPLE_BUS,
  	.of_match = generic_simple_bus_ids,
  };