diff options
Diffstat (limited to 'drivers/base/regmap/regcache.c')
| -rw-r--r-- | drivers/base/regmap/regcache.c | 41 |
1 files changed, 35 insertions, 6 deletions
diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c index 4c0780298..348be3a35 100644 --- a/drivers/base/regmap/regcache.c +++ b/drivers/base/regmap/regcache.c @@ -100,15 +100,25 @@ int regcache_init(struct regmap *map, const struct regmap_config *config) int i; void *tmp_buf; - for (i = 0; i < config->num_reg_defaults; i++) - if (config->reg_defaults[i].reg % map->reg_stride) - return -EINVAL; - if (map->cache_type == REGCACHE_NONE) { + if (config->reg_defaults || config->num_reg_defaults_raw) + dev_warn(map->dev, + "No cache used with register defaults set!\n"); + map->cache_bypass = true; return 0; } + if (config->reg_defaults && !config->num_reg_defaults) { + dev_err(map->dev, + "Register defaults are set without the number!\n"); + return -EINVAL; + } + + for (i = 0; i < config->num_reg_defaults; i++) + if (config->reg_defaults[i].reg % map->reg_stride) + return -EINVAL; + for (i = 0; i < ARRAY_SIZE(cache_types); i++) if (cache_types[i]->type == map->cache_type) break; @@ -138,8 +148,6 @@ int regcache_init(struct regmap *map, const struct regmap_config *config) * a copy of it. */ if (config->reg_defaults) { - if (!map->num_reg_defaults) - return -EINVAL; tmp_buf = kmemdup(config->reg_defaults, map->num_reg_defaults * sizeof(struct reg_default), GFP_KERNEL); if (!tmp_buf) @@ -535,19 +543,30 @@ bool regcache_set_val(struct regmap *map, void *base, unsigned int idx, switch (map->cache_word_size) { case 1: { u8 *cache = base; + cache[idx] = val; break; } case 2: { u16 *cache = base; + cache[idx] = val; break; } case 4: { u32 *cache = base; + + cache[idx] = val; + break; + } +#ifdef CONFIG_64BIT + case 8: { + u64 *cache = base; + cache[idx] = val; break; } +#endif default: BUG(); } @@ -568,16 +587,26 @@ unsigned int regcache_get_val(struct regmap *map, const void *base, switch (map->cache_word_size) { case 1: { const u8 *cache = base; + return cache[idx]; } case 2: { const u16 *cache = base; + return cache[idx]; } case 4: { const u32 *cache = base; + + return cache[idx]; + } +#ifdef CONFIG_64BIT + case 8: { + const u64 *cache = base; + return cache[idx]; } +#endif default: BUG(); } |