From 5d1729e7f02f050c73b68ce0198f8e5c48e9608a Mon Sep 17 00:00:00 2001 From: Dimitris Papastamos Date: Mon, 19 Sep 2011 14:34:05 +0100 Subject: [PATCH] regmap: Incorporate the regcache core into regmap 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 Tested-by: Lars-Peter Clausen Signed-off-by: Mark Brown --- drivers/base/regmap/regmap.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index e7adfe70e425..35964659a81d 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->reg_defaults = config->reg_defaults; + map->num_reg_defaults = config->num_reg_defaults; + map->num_reg_defaults_raw = config->num_reg_defaults_raw; + map->reg_defaults_raw = config->reg_defaults_raw; + map->cache_size_raw = (config->val_bits / 8) * config->num_reg_defaults_raw; + map->cache_word_size = config->val_bits / 8; if (config->read_flag_mask || config->write_flag_mask) { map->read_flag_mask = config->read_flag_mask; @@ -208,6 +215,10 @@ struct regmap *regmap_init(struct device *dev, goto err_map; } + ret = regcache_init(map); + if (ret < 0) + goto err_map; + regmap_debugfs_init(map); return map; @@ -224,6 +235,7 @@ EXPORT_SYMBOL_GPL(regmap_init); */ void regmap_exit(struct regmap *map) { + regcache_exit(map); regmap_debugfs_exit(map); kfree(map->work_buf); kfree(map); @@ -290,6 +302,14 @@ static int _regmap_write(struct regmap *map, unsigned int reg, int ret; BUG_ON(!map->format.format_write && !map->format.format_val); + if (!map->cache_bypass) { + ret = regcache_write(map, reg, val); + if (ret != 0) + return ret; + if (map->cache_only) + return 0; + } + trace_regmap_reg_write(map->dev, reg, val); if (map->format.format_write) { @@ -403,6 +423,15 @@ static int _regmap_read(struct regmap *map, unsigned int reg, if (!map->format.parse_val) return -EINVAL; + if (!map->cache_bypass) { + ret = regcache_read(map, reg, val); + if (ret == 0) + return 0; + } + + if (map->cache_only) + return -EBUSY; + ret = _regmap_raw_read(map, reg, map->work_buf, map->format.val_bytes); if (ret == 0) { *val = map->format.parse_val(map->work_buf); @@ -479,6 +508,8 @@ 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; -- 2.39.5