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regmap: cache: Store caches in native register format where possible

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This allows the cached data to be sent directly to the device when
we sync it.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2013-02-21 18:39:47 +00:00
parent 8a819ff8ab
commit eb4cb76ff0
1 changed files with 14 additions and 2 deletions
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16
drivers/base/regmap/regcache.c
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@ -45,8 +45,8 @@ static int regcache_hw_init(struct regmap *map)
tmp_buf = kmalloc(map->cache_size_raw, GFP_KERNEL); tmp_buf = kmalloc(map->cache_size_raw, GFP_KERNEL);
if (!tmp_buf) if (!tmp_buf)
return -EINVAL; return -EINVAL;
ret = regmap_bulk_read(map, 0, tmp_buf, ret = regmap_raw_read(map, 0, tmp_buf,
map->num_reg_defaults_raw); map->num_reg_defaults_raw);
map->cache_bypass = cache_bypass; map->cache_bypass = cache_bypass;
if (ret < 0) { if (ret < 0) {
kfree(tmp_buf); kfree(tmp_buf);
@ -421,6 +421,13 @@ bool regcache_set_val(struct regmap *map, void *base, unsigned int idx,
if (regcache_get_val(map, base, idx) == val) if (regcache_get_val(map, base, idx) == val)
return true; return true;
/* Use device native format if possible */
if (map->format.format_val) {
map->format.format_val(base + (map->cache_word_size * idx),
val, 0);
return false;
}
switch (map->cache_word_size) { switch (map->cache_word_size) {
case 1: { case 1: {
u8 *cache = base; u8 *cache = base;
@ -449,6 +456,11 @@ unsigned int regcache_get_val(struct regmap *map, const void *base,
if (!base) if (!base)
return -EINVAL; return -EINVAL;
/* Use device native format if possible */
if (map->format.parse_val)
return map->format.parse_val(base +
(map->cache_word_size * idx));
switch (map->cache_word_size) { switch (map->cache_word_size) {
case 1: { case 1: {
const u8 *cache = base; const u8 *cache = base;