dm: core: Move regmap allocation into a separate function

We plan to add a new way of creating a regmap for of-platdata. Move the
allocation code into a separate function so that it can be shared.

Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/core/regmap.c b/drivers/core/regmap.c
index 7e073cf..dcb1a30 100644 (file)
--- a/drivers/core/regmap.c
+++ b/drivers/core/regmap.c
@@ -15,6 +15,27 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
+static struct regmap *regmap_alloc_count(int count)
+{
+       struct regmap *map;
+
+       map = malloc(sizeof(struct regmap));
+       if (!map)
+               return NULL;
+       if (count <= 1) {
+               map->range = &map->base_range;
+       } else {
+               map->range = malloc(count * sizeof(struct regmap_range));
+               if (!map->range) {
+                       free(map);
+                       return NULL;
+               }
+       }
+       map->range_count = count;
+
+       return map;
+}
+
 #if CONFIG_IS_ENABLED(OF_PLATDATA)
 int regmap_init_mem_platdata(struct udevice *dev, fdt32_t *reg, int size,
                             struct regmap **mapp)
@@ -45,22 +66,11 @@ int regmap_init_mem(struct udevice *dev, struct regmap **mapp)
        if (!cell || !count)
                return -EINVAL;
 
-       map = malloc(sizeof(struct regmap));
+       map = regmap_alloc_count(count);
        if (!map)
                return -ENOMEM;
 
-       if (count <= 1) {
-               map->range = &map->base_range;
-       } else {
-               map->range = malloc(count * sizeof(struct regmap_range));
-               if (!map->range) {
-                       free(map);
-                       return -ENOMEM;
-               }
-       }
-
        map->base = fdtdec_get_number(cell, addr_len);
-       map->range_count = count;
 
        for (range = map->range; count > 0;
             count--, cell += both_len, range++) {