Messages in this thread Patch in this message | | | From | Dimitris Papastamos <> | Subject | [PATCH 6/6] regmap: Incorporate the regcache core into regmap | Date | Mon, 5 Sep 2011 14:51:02 +0100 |
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This patch incorporates the regcache core code into regmap. All previous patches have been no-ops essentially up to this point.
The bulk read operation is not supported by regcache at the moment. This will be implemented incrementally.
Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com> --- drivers/base/regmap/regmap.c | 56 ++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 56 insertions(+), 0 deletions(-)
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index fa2bd89..df4e00a 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -146,6 +146,13 @@ struct regmap *regmap_init(struct device *dev, map->readable_reg = config->readable_reg; map->volatile_reg = config->volatile_reg; map->precious_reg = config->precious_reg; + map->cache_type = config->cache_type; + map->cache_defaults = config->cache_defaults; + map->num_cache_defaults = config->num_cache_defaults; + map->num_cache_defaults_raw = config->num_cache_defaults_raw; + map->cache_defaults_raw = config->cache_defaults_raw; + map->cache_size_raw = (config->val_bits / 8) * config->num_cache_defaults_raw; + map->cache_word_size = config->val_bits / 8; switch (config->reg_bits) { case 4: @@ -201,6 +208,12 @@ struct regmap *regmap_init(struct device *dev, goto err_bus; } +#ifdef CONFIG_REGCACHE + ret = regcache_init(map); + if (ret < 0) + goto err_bus; +#endif + regmap_debugfs_init(map); return map; @@ -219,6 +232,9 @@ EXPORT_SYMBOL_GPL(regmap_init); */ void regmap_exit(struct regmap *map) { +#ifdef CONFIG_REGCACHE + regcache_exit(map); +#endif regmap_debugfs_exit(map); kfree(map->work_buf); module_put(map->bus->owner); @@ -321,6 +337,20 @@ int regmap_write(struct regmap *map, unsigned int reg, unsigned int val) mutex_lock(&map->lock); +#ifdef CONFIG_REGCACHE + if (!map->cache_bypass) { + ret = regcache_write(map, reg, val); + if (ret < 0) { + mutex_unlock(&map->lock); + return ret; + } + if (map->cache_only) { + mutex_unlock(&map->lock); + return 0; + } + } +#endif + ret = _regmap_write(map, reg, val); mutex_unlock(&map->lock); @@ -422,6 +452,16 @@ int regmap_read(struct regmap *map, unsigned int reg, unsigned int *val) mutex_lock(&map->lock); +#ifdef CONFIG_REGCACHE + if (!map->cache_bypass) { + ret = regcache_read(map, reg, val); + if (!ret) { + mutex_unlock(&map->lock); + return 0; + } + } +#endif + ret = _regmap_read(map, reg, val); mutex_unlock(&map->lock); @@ -473,6 +513,8 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val, int ret, i; size_t val_bytes = map->format.val_bytes; + WARN_ON(map->cache_type != REGCACHE_NONE); + if (!map->format.parse_val) return -EINVAL; @@ -512,6 +554,20 @@ int regmap_update_bits(struct regmap *map, unsigned int reg, tmp &= ~mask; tmp |= val & mask; +#ifdef CONFIG_REGCACHE + if (!map->cache_bypass) { + ret = regcache_write(map, reg, tmp); + if (ret < 0) { + mutex_unlock(&map->lock); + return ret; + } + if (map->cache_only) { + mutex_unlock(&map->lock); + return 0; + } + } +#endif + ret = _regmap_write(map, reg, tmp); out: -- 1.7.6.1
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