2 * Copyright (c) 2015 Google, Inc
3 * Written by Simon Glass <sjg@chromium.org>
5 * SPDX-License-Identifier: GPL-2.0+
16 DECLARE_GLOBAL_DATA_PTR;
18 static struct regmap *regmap_alloc_count(int count)
22 map = malloc(sizeof(struct regmap));
26 map->range = &map->base_range;
28 map->range = malloc(count * sizeof(struct regmap_range));
34 map->range_count = count;
39 #if CONFIG_IS_ENABLED(OF_PLATDATA)
40 int regmap_init_mem_platdata(struct udevice *dev, u32 *reg, int count,
43 struct regmap_range *range;
46 map = regmap_alloc_count(count);
51 for (range = map->range; count > 0; reg += 2, range++, count--) {
61 int regmap_init_mem(struct udevice *dev, struct regmap **mapp)
63 const void *blob = gd->fdt_blob;
64 struct regmap_range *range;
68 int addr_len, size_len, both_len;
72 parent = dev->parent->of_offset;
73 addr_len = fdt_address_cells(blob, parent);
74 size_len = fdt_size_cells(blob, parent);
75 both_len = addr_len + size_len;
77 cell = fdt_getprop(blob, dev->of_offset, "reg", &len);
79 count = len / both_len;
83 map = regmap_alloc_count(count);
87 map->base = fdtdec_get_number(cell, addr_len);
89 for (range = map->range; count > 0;
90 count--, cell += both_len, range++) {
91 range->start = fdtdec_get_number(cell, addr_len);
92 range->size = fdtdec_get_number(cell + addr_len, size_len);
101 void *regmap_get_range(struct regmap *map, unsigned int range_num)
103 struct regmap_range *range;
105 if (range_num >= map->range_count)
107 range = &map->range[range_num];
109 return map_sysmem(range->start, range->size);
112 int regmap_uninit(struct regmap *map)
114 if (map->range_count > 1)