diff options
Diffstat (limited to 'drivers/base/regmap/regmap.c')
| -rw-r--r-- | drivers/base/regmap/regmap.c | 34 |
1 files changed, 19 insertions, 15 deletions
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index fa2d3fba6ac9..1bfd1727b4da 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -2082,8 +2082,6 @@ int _regmap_raw_write(struct regmap *map, unsigned int reg, size_t val_count = val_len / val_bytes; size_t chunk_count, chunk_bytes; size_t chunk_regs = val_count; - size_t max_data = map->max_raw_write - map->format.reg_bytes - - map->format.pad_bytes; int ret, i; if (!val_count) @@ -2091,8 +2089,8 @@ int _regmap_raw_write(struct regmap *map, unsigned int reg, if (map->use_single_write) chunk_regs = 1; - else if (map->max_raw_write && val_len > max_data) - chunk_regs = max_data / val_bytes; + else if (map->max_raw_write && val_len > map->max_raw_write) + chunk_regs = map->max_raw_write / val_bytes; chunk_count = val_count / chunk_regs; chunk_bytes = chunk_regs * val_bytes; @@ -2983,6 +2981,11 @@ int regmap_raw_read(struct regmap *map, unsigned int reg, void *val, size_t chunk_count, chunk_bytes; size_t chunk_regs = val_count; + if (!map->cache_bypass && map->cache_only) { + ret = -EBUSY; + goto out; + } + if (!map->read) { ret = -ENOTSUPP; goto out; @@ -3078,18 +3081,19 @@ int regmap_noinc_read(struct regmap *map, unsigned int reg, goto out_unlock; } + /* + * We have not defined the FIFO semantics for cache, as the + * cache is just one value deep. Should we return the last + * written value? Just avoid this by always reading the FIFO + * even when using cache. Cache only will not work. + */ + if (!map->cache_bypass && map->cache_only) { + ret = -EBUSY; + goto out_unlock; + } + /* Use the accelerated operation if we can */ if (map->bus->reg_noinc_read) { - /* - * We have not defined the FIFO semantics for cache, as the - * cache is just one value deep. Should we return the last - * written value? Just avoid this by always reading the FIFO - * even when using cache. Cache only will not work. - */ - if (map->cache_only) { - ret = -EBUSY; - goto out_unlock; - } ret = regmap_noinc_readwrite(map, reg, val, val_len, false); goto out_unlock; } @@ -3273,7 +3277,7 @@ static int _regmap_update_bits(struct regmap *map, unsigned int reg, tmp = orig & ~mask; tmp |= val & mask; - if (force_write || (tmp != orig)) { + if (force_write || (tmp != orig) || map->force_write_field) { ret = _regmap_write(map, reg, tmp); if (ret == 0 && change) *change = true; |