return ret;
}
-static int regcache_lzo_sync(struct regmap *map)
+static int regcache_lzo_sync(struct regmap *map, unsigned int min,
+ unsigned int max)
{
struct regcache_lzo_ctx **lzo_blocks;
unsigned int val;
int ret;
lzo_blocks = map->cache;
- for_each_set_bit(i, lzo_blocks[0]->sync_bmp, lzo_blocks[0]->sync_bmp_nbits) {
+ i = min;
+ for_each_set_bit_from(i, lzo_blocks[0]->sync_bmp,
+ lzo_blocks[0]->sync_bmp_nbits) {
+ if (i > max)
+ continue;
+
ret = regcache_read(map, i, &val);
if (ret)
return ret;
+
+ /* Is this the hardware default? If so skip. */
+ ret = regcache_lookup_reg(map, i);
+ if (ret > 0 && val == map->reg_defaults[ret].def)
+ continue;
+
map->cache_bypass = 1;
ret = _regmap_write(map, i, val);
map->cache_bypass = 0;