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regmap: cache: Pass the map rather than the word size when updating values

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It's more idiomatic to pass the map structure around and this means we
can use other bits of information from the map.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
tirimbino
Mark Brown 12 years ago
parent 66baf40757
commit 879082c9fe
4 changed files with 39 additions and 44 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 8
      drivers/base/regmap/internal.h
  2. 6
      drivers/base/regmap/regcache-lzo.c
  3. 51
      drivers/base/regmap/regcache-rbtree.c
  4. 18
      drivers/base/regmap/regcache.c

8
drivers/base/regmap/internal.h
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@ -188,10 +188,10 @@ int regcache_write(struct regmap *map,
unsigned int reg, unsigned int value);
int regcache_sync(struct regmap *map);
unsigned int regcache_get_val(const void *base, unsigned int idx,
unsigned int word_size);
bool regcache_set_val(void *base, unsigned int idx,
unsigned int val, unsigned int word_size);
unsigned int regcache_get_val(struct regmap *map, const void *base,
unsigned int idx);
bool regcache_set_val(struct regmap *map, void *base, unsigned int idx,
unsigned int val);
int regcache_lookup_reg(struct regmap *map, unsigned int reg);
void regmap_async_complete_cb(struct regmap_async *async, int ret);

6
drivers/base/regmap/regcache-lzo.c
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@ -260,8 +260,7 @@ static int regcache_lzo_read(struct regmap *map,
ret = regcache_lzo_decompress_cache_block(map, lzo_block);
if (ret >= 0)
/* fetch the value from the cache */
*value = regcache_get_val(lzo_block->dst, blkpos,
map->cache_word_size);
*value = regcache_get_val(map, lzo_block->dst, blkpos);
kfree(lzo_block->dst);
/* restore the pointer and length of the compressed block */
@ -304,8 +303,7 @@ static int regcache_lzo_write(struct regmap *map,
}
/* write the new value to the cache */
if (regcache_set_val(lzo_block->dst, blkpos, value,
map->cache_word_size)) {
if (regcache_set_val(map, lzo_block->dst, blkpos, value)) {
kfree(lzo_block->dst);
goto out;
}

51
drivers/base/regmap/regcache-rbtree.c
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@ -47,22 +47,21 @@ static inline void regcache_rbtree_get_base_top_reg(
*top = rbnode->base_reg + ((rbnode->blklen - 1) * map->reg_stride);
}
static unsigned int regcache_rbtree_get_register(
struct regcache_rbtree_node *rbnode, unsigned int idx,
unsigned int word_size)
static unsigned int regcache_rbtree_get_register(struct regmap *map,
struct regcache_rbtree_node *rbnode, unsigned int idx)
{
return regcache_get_val(rbnode->block, idx, word_size);
return regcache_get_val(map, rbnode->block, idx);
}
static void regcache_rbtree_set_register(struct regcache_rbtree_node *rbnode,
unsigned int idx, unsigned int val,
unsigned int word_size)
static void regcache_rbtree_set_register(struct regmap *map,
struct regcache_rbtree_node *rbnode,
unsigned int idx, unsigned int val)
{
regcache_set_val(rbnode->block, idx, val, word_size);
regcache_set_val(map, rbnode->block, idx, val);
}
static struct regcache_rbtree_node *regcache_rbtree_lookup(struct regmap *map,
unsigned int reg)
unsigned int reg)
{
struct regcache_rbtree_ctx *rbtree_ctx = map->cache;
struct rb_node *node;
@ -260,8 +259,7 @@ static int regcache_rbtree_read(struct regmap *map,
rbnode = regcache_rbtree_lookup(map, reg);
if (rbnode) {
reg_tmp = (reg - rbnode->base_reg) / map->reg_stride;
*value = regcache_rbtree_get_register(rbnode, reg_tmp,
map->cache_word_size);
*value = regcache_rbtree_get_register(map, rbnode, reg_tmp);
} else {
return -ENOENT;
}
@ -270,21 +268,23 @@ static int regcache_rbtree_read(struct regmap *map,
}
static int regcache_rbtree_insert_to_block(struct regcache_rbtree_node *rbnode,
static int regcache_rbtree_insert_to_block(struct regmap *map,
struct regcache_rbtree_node *rbnode,
unsigned int pos, unsigned int reg,
unsigned int value, unsigned int word_size)
unsigned int value)
{
u8 *blk;
blk = krealloc(rbnode->block,
(rbnode->blklen + 1) * word_size, GFP_KERNEL);
(rbnode->blklen + 1) * map->cache_word_size,
GFP_KERNEL);
if (!blk)
return -ENOMEM;
/* insert the register value in the correct place in the rbnode block */
memmove(blk + (pos + 1) * word_size,
blk + pos * word_size,
(rbnode->blklen - pos) * word_size);
memmove(blk + (pos + 1) * map->cache_word_size,
blk + pos * map->cache_word_size,
(rbnode->blklen - pos) * map->cache_word_size);
/* update the rbnode block, its size and the base register */
rbnode->block = blk;
@ -292,7 +292,7 @@ static int regcache_rbtree_insert_to_block(struct regcache_rbtree_node *rbnode,
if (!pos)
rbnode->base_reg = reg;
regcache_rbtree_set_register(rbnode, pos, value, word_size);
regcache_rbtree_set_register(map, rbnode, pos, value);
return 0;
}
@ -314,8 +314,7 @@ static int regcache_rbtree_write(struct regmap *map, unsigned int reg,
rbnode = regcache_rbtree_lookup(map, reg);
if (rbnode) {
reg_tmp = (reg - rbnode->base_reg) / map->reg_stride;
regcache_rbtree_set_register(rbnode, reg_tmp, value,
map->cache_word_size);
regcache_rbtree_set_register(map, rbnode, reg_tmp, value);
} else {
/* look for an adjacent register to the one we are about to add */
for (node = rb_first(&rbtree_ctx->root); node;
@ -332,9 +331,10 @@ static int regcache_rbtree_write(struct regmap *map, unsigned int reg,
pos = i + 1;
else
pos = i;
ret = regcache_rbtree_insert_to_block(rbnode_tmp, pos,
reg, value,
map->cache_word_size);
ret = regcache_rbtree_insert_to_block(map,
rbnode_tmp,
pos, reg,
value);
if (ret)
return ret;
rbtree_ctx->cached_rbnode = rbnode_tmp;
@ -357,7 +357,7 @@ static int regcache_rbtree_write(struct regmap *map, unsigned int reg,
kfree(rbnode);
return -ENOMEM;
}
regcache_rbtree_set_register(rbnode, 0, value, map->cache_word_size);
regcache_rbtree_set_register(map, rbnode, 0, value);
regcache_rbtree_insert(map, &rbtree_ctx->root, rbnode);
rbtree_ctx->cached_rbnode = rbnode;
}
@ -399,8 +399,7 @@ static int regcache_rbtree_sync(struct regmap *map, unsigned int min,
for (i = base; i < end; i++) {
regtmp = rbnode->base_reg + (i * map->reg_stride);
val = regcache_rbtree_get_register(rbnode, i,
map->cache_word_size);
val = regcache_rbtree_get_register(map, rbnode, i);
/* Is this the hardware default? If so skip. */
ret = regcache_lookup_reg(map, regtmp);

18
drivers/base/regmap/regcache.c
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@ -58,8 +58,7 @@ static int regcache_hw_init(struct regmap *map)
/* calculate the size of reg_defaults */
for (count = 0, i = 0; i < map->num_reg_defaults_raw; i++) {
val = regcache_get_val(map->reg_defaults_raw,
i, map->cache_word_size);
val = regcache_get_val(map, map->reg_defaults_raw, i);
if (regmap_volatile(map, i * map->reg_stride))
continue;
count++;
@ -75,8 +74,7 @@ static int regcache_hw_init(struct regmap *map)
/* fill the reg_defaults */
map->num_reg_defaults = count;
for (i = 0, j = 0; i < map->num_reg_defaults_raw; i++) {
val = regcache_get_val(map->reg_defaults_raw,
i, map->cache_word_size);
val = regcache_get_val(map, map->reg_defaults_raw, i);
if (regmap_volatile(map, i * map->reg_stride))
continue;
map->reg_defaults[j].reg = i * map->reg_stride;
@ -417,10 +415,10 @@ void regcache_cache_bypass(struct regmap *map, bool enable)
}
EXPORT_SYMBOL_GPL(regcache_cache_bypass);
bool regcache_set_val(void *base, unsigned int idx,
unsigned int val, unsigned int word_size)
bool regcache_set_val(struct regmap *map, void *base, unsigned int idx,
unsigned int val)
{
switch (word_size) {
switch (map->cache_word_size) {
case 1: {
u8 *cache = base;
if (cache[idx] == val)
@ -448,13 +446,13 @@ bool regcache_set_val(void *base, unsigned int idx,
return false;
}
unsigned int regcache_get_val(const void *base, unsigned int idx,
unsigned int word_size)
unsigned int regcache_get_val(struct regmap *map, const void *base,
unsigned int idx)
{
if (!base)
return -EINVAL;
switch (word_size) {
switch (map->cache_word_size) {
case 1: {
const u8 *cache = base;
return cache[idx];

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