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regmap: cache: Split raw and non-raw syncs

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For code clarity after implementing block writes split out the raw and
non-raw I/O sync implementations.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Reviewed-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2013-03-29 20:12:21 +00:00
parent f8bd822cbf
commit cfdeb8c37e
1 changed files with 53 additions and 11 deletions
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64
drivers/base/regmap/regcache.c
View file

@ -545,9 +545,43 @@ int regcache_lookup_reg(struct regmap *map, unsigned int reg)
return -ENOENT;
}
int regcache_sync_block(struct regmap *map, void *block,
unsigned int block_base, unsigned int start,
unsigned int end)
static int regcache_sync_block_single(struct regmap *map, void *block,
unsigned int block_base,
unsigned int start, unsigned int end)
{
unsigned int i, regtmp, val;
int ret;
for (i = start; i < end; i++) {
regtmp = block_base + (i * map->reg_stride);
if (!regcache_reg_present(map, regtmp))
continue;
val = regcache_get_val(map, block, i);
/* Is this the hardware default? If so skip. */
ret = regcache_lookup_reg(map, regtmp);
if (ret >= 0 && val == map->reg_defaults[ret].def)
continue;
map->cache_bypass = 1;
ret = _regmap_write(map, regtmp, val);
map->cache_bypass = 0;
if (ret != 0)
return ret;
dev_dbg(map->dev, "Synced register %#x, value %#x\n",
regtmp, val);
}
return 0;
}
int regcache_sync_block_raw(struct regmap *map, void *block,
unsigned int block_base, unsigned int start,
unsigned int end)
{
unsigned int i, regtmp, val;
const void *addr;
@ -568,14 +602,10 @@ int regcache_sync_block(struct regmap *map, void *block,
map->cache_bypass = 1;
if (regmap_can_raw_write(map)) {
addr = regcache_get_val_addr(map, block, i);
ret = _regmap_raw_write(map, regtmp, addr,
map->format.val_bytes,
false);
} else {
ret = _regmap_write(map, regtmp, val);
}
addr = regcache_get_val_addr(map, block, i);
ret = _regmap_raw_write(map, regtmp, addr,
map->format.val_bytes,
false);
map->cache_bypass = 0;
if (ret != 0)
@ -586,3 +616,15 @@ int regcache_sync_block(struct regmap *map, void *block,
return 0;
}
int regcache_sync_block(struct regmap *map, void *block,
unsigned int block_base, unsigned int start,
unsigned int end)
{
if (regmap_can_raw_write(map))
return regcache_sync_block_raw(map, block, block_base,
start, end);
else
return regcache_sync_block_single(map, block, block_base,
start, end);
}