diff options
Diffstat (limited to 'drivers/core/regmap.c')
| -rw-r--r-- | drivers/core/regmap.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/core/regmap.c b/drivers/core/regmap.c index 5ef0f71c8b7..d1d12eef385 100644 --- a/drivers/core/regmap.c +++ b/drivers/core/regmap.c @@ -108,6 +108,48 @@ static int init_range(ofnode node, struct regmap_range *range, int addr_len, return 0; } +int regmap_init_mem_index(ofnode node, struct regmap **mapp, int index) +{ + struct regmap *map; + int addr_len, size_len; + int ret; + + addr_len = ofnode_read_simple_addr_cells(ofnode_get_parent(node)); + if (addr_len < 0) { + debug("%s: Error while reading the addr length (ret = %d)\n", + ofnode_get_name(node), addr_len); + return addr_len; + } + + size_len = ofnode_read_simple_size_cells(ofnode_get_parent(node)); + if (size_len < 0) { + debug("%s: Error while reading the size length: (ret = %d)\n", + ofnode_get_name(node), size_len); + return size_len; + } + + map = regmap_alloc(1); + if (!map) + return -ENOMEM; + + ret = init_range(node, map->ranges, addr_len, size_len, index); + if (ret) + return ret; + + if (ofnode_read_bool(node, "little-endian")) + map->endianness = REGMAP_LITTLE_ENDIAN; + else if (ofnode_read_bool(node, "big-endian")) + map->endianness = REGMAP_BIG_ENDIAN; + else if (ofnode_read_bool(node, "native-endian")) + map->endianness = REGMAP_NATIVE_ENDIAN; + else /* Default: native endianness */ + map->endianness = REGMAP_NATIVE_ENDIAN; + + *mapp = map; + + return ret; +} + int regmap_init_mem(ofnode node, struct regmap **mapp) { struct regmap_range *range; |