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-rw-r--r--drivers/base/regmap/internal.h39
-rw-r--r--drivers/base/regmap/regcache-lzo.c6
-rw-r--r--drivers/base/regmap/regcache-rbtree.c100
-rw-r--r--drivers/base/regmap/regcache.c196
-rw-r--r--drivers/base/regmap/regmap.c84
-rw-r--r--include/linux/regmap.h1
6 files changed, 316 insertions, 110 deletions
diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h
index 5a22bd3..01fbe48 100644
--- a/drivers/base/regmap/internal.h
+++ b/drivers/base/regmap/internal.h
@@ -38,7 +38,8 @@ struct regmap_format {
unsigned int reg, unsigned int val);
void (*format_reg)(void *buf, unsigned int reg, unsigned int shift);
void (*format_val)(void *buf, unsigned int val, unsigned int shift);
- unsigned int (*parse_val)(void *buf);
+ unsigned int (*parse_val)(const void *buf);
+ void (*parse_inplace)(void *buf);
};
struct regmap_async {
@@ -125,6 +126,9 @@ struct regmap {
void *cache;
u32 cache_dirty;
+ unsigned long *cache_present;
+ unsigned int cache_present_nbits;
+
struct reg_default *patch;
int patch_regs;
@@ -187,12 +191,35 @@ int regcache_read(struct regmap *map,
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);
+int regcache_sync_block(struct regmap *map, void *block,
+ unsigned int block_base, unsigned int start,
+ unsigned int end);
+
+static inline const void *regcache_get_val_addr(struct regmap *map,
+ const void *base,
+ unsigned int idx)
+{
+ return base + (map->cache_word_size * idx);
+}
+
+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);
+int regcache_set_reg_present(struct regmap *map, unsigned int reg);
+
+static inline bool regcache_reg_present(struct regmap *map, unsigned int reg)
+{
+ if (!map->cache_present)
+ return true;
+ if (reg > map->cache_present_nbits)
+ return false;
+ return map->cache_present[BIT_WORD(reg)] & BIT_MASK(reg);
+}
+
+int _regmap_raw_write(struct regmap *map, unsigned int reg,
+ const void *val, size_t val_len, bool async);
void regmap_async_complete_cb(struct regmap_async *async, int ret);
diff --git a/drivers/base/regmap/regcache-lzo.c b/drivers/base/regmap/regcache-lzo.c
index afd6aa9..e210a6d 100644
--- a/drivers/base/regmap/regcache-lzo.c
+++ b/drivers/base/regmap/regcache-lzo.c
@@ -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;
}
diff --git a/drivers/base/regmap/regcache-rbtree.c b/drivers/base/regmap/regcache-rbtree.c
index 79f4fca..aa0875f 100644
--- a/drivers/base/regmap/regcache-rbtree.c
+++ b/drivers/base/regmap/regcache-rbtree.c
@@ -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;
@@ -139,15 +138,21 @@ static int rbtree_show(struct seq_file *s, void *ignored)
struct regcache_rbtree_node *n;
struct rb_node *node;
unsigned int base, top;
+ size_t mem_size;
int nodes = 0;
int registers = 0;
int this_registers, average;
map->lock(map);
+ mem_size = sizeof(*rbtree_ctx);
+ mem_size += BITS_TO_LONGS(map->cache_present_nbits) * sizeof(long);
+
for (node = rb_first(&rbtree_ctx->root); node != NULL;
node = rb_next(node)) {
n = container_of(node, struct regcache_rbtree_node, node);
+ mem_size += sizeof(*n);
+ mem_size += (n->blklen * map->cache_word_size);
regcache_rbtree_get_base_top_reg(map, n, &base, &top);
this_registers = ((top - base) / map->reg_stride) + 1;
@@ -162,8 +167,8 @@ static int rbtree_show(struct seq_file *s, void *ignored)
else
average = 0;
- seq_printf(s, "%d nodes, %d registers, average %d registers\n",
- nodes, registers, average);
+ seq_printf(s, "%d nodes, %d registers, average %d registers, used %zu bytes\n",
+ nodes, registers, average, mem_size);
map->unlock(map);
@@ -260,8 +265,9 @@ 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);
+ if (!regcache_reg_present(map, reg))
+ return -ENOENT;
+ *value = regcache_rbtree_get_register(map, rbnode, reg_tmp);
} else {
return -ENOENT;
}
@@ -270,21 +276,23 @@ 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 +300,7 @@ 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;
}
@@ -302,25 +310,24 @@ static int regcache_rbtree_write(struct regmap *map, unsigned int reg,
struct regcache_rbtree_ctx *rbtree_ctx;
struct regcache_rbtree_node *rbnode, *rbnode_tmp;
struct rb_node *node;
- unsigned int val;
unsigned int reg_tmp;
unsigned int pos;
int i;
int ret;
rbtree_ctx = map->cache;
+ /* update the reg_present bitmap, make space if necessary */
+ ret = regcache_set_reg_present(map, reg);
+ if (ret < 0)
+ return ret;
+
/* if we can't locate it in the cached rbnode we'll have
* to traverse the rbtree looking for it.
*/
rbnode = regcache_rbtree_lookup(map, reg);
if (rbnode) {
reg_tmp = (reg - rbnode->base_reg) / map->reg_stride;
- val = regcache_rbtree_get_register(rbnode, reg_tmp,
- map->cache_word_size);
- if (val == value)
- return 0;
- 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;
@@ -337,9 +344,10 @@ 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;
@@ -354,7 +362,7 @@ static int regcache_rbtree_write(struct regmap *map, unsigned int reg,
rbnode = kzalloc(sizeof *rbnode, GFP_KERNEL);
if (!rbnode)
return -ENOMEM;
- rbnode->blklen = 1;
+ rbnode->blklen = sizeof(*rbnode);
rbnode->base_reg = reg;
rbnode->block = kmalloc(rbnode->blklen * map->cache_word_size,
GFP_KERNEL);
@@ -362,7 +370,7 @@ 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;
}
@@ -376,10 +384,8 @@ static int regcache_rbtree_sync(struct regmap *map, unsigned int min,
struct regcache_rbtree_ctx *rbtree_ctx;
struct rb_node *node;
struct regcache_rbtree_node *rbnode;
- unsigned int regtmp;
- unsigned int val;
int ret;
- int i, base, end;
+ int base, end;
rbtree_ctx = map->cache;
for (node = rb_first(&rbtree_ctx->root); node; node = rb_next(node)) {
@@ -402,27 +408,13 @@ static int regcache_rbtree_sync(struct regmap *map, unsigned int min,
else
end = rbnode->blklen;
- 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);
-
- /* 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)
- return ret;
- dev_dbg(map->dev, "Synced register %#x, value %#x\n",
- regtmp, val);
- }
+ ret = regcache_sync_block(map, rbnode->block, rbnode->base_reg,
+ base, end);
+ if (ret != 0)
+ return ret;
}
- return 0;
+ return regmap_async_complete(map);
}
struct regcache_ops regcache_rbtree_ops = {
diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index e69ff3e..75923f2 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -45,8 +45,8 @@ static int regcache_hw_init(struct regmap *map)
tmp_buf = kmalloc(map->cache_size_raw, GFP_KERNEL);
if (!tmp_buf)
return -EINVAL;
- ret = regmap_bulk_read(map, 0, tmp_buf,
- map->num_reg_defaults_raw);
+ ret = regmap_raw_read(map, 0, tmp_buf,
+ map->num_reg_defaults_raw);
map->cache_bypass = cache_bypass;
if (ret < 0) {
kfree(tmp_buf);
@@ -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;
@@ -123,6 +121,8 @@ int regcache_init(struct regmap *map, const struct regmap_config *config)
map->reg_defaults_raw = config->reg_defaults_raw;
map->cache_word_size = DIV_ROUND_UP(config->val_bits, 8);
map->cache_size_raw = map->cache_word_size * config->num_reg_defaults_raw;
+ map->cache_present = NULL;
+ map->cache_present_nbits = 0;
map->cache = NULL;
map->cache_ops = cache_types[i];
@@ -181,6 +181,7 @@ void regcache_exit(struct regmap *map)
BUG_ON(!map->cache_ops);
+ kfree(map->cache_present);
kfree(map->reg_defaults);
if (map->cache_free)
kfree(map->reg_defaults_raw);
@@ -417,28 +418,68 @@ 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)
+int regcache_set_reg_present(struct regmap *map, unsigned int reg)
{
- switch (word_size) {
+ unsigned long *cache_present;
+ unsigned int cache_present_size;
+ unsigned int nregs;
+ int i;
+
+ nregs = reg + 1;
+ cache_present_size = BITS_TO_LONGS(nregs);
+ cache_present_size *= sizeof(long);
+
+ if (!map->cache_present) {
+ cache_present = kmalloc(cache_present_size, GFP_KERNEL);
+ if (!cache_present)
+ return -ENOMEM;
+ bitmap_zero(cache_present, nregs);
+ map->cache_present = cache_present;
+ map->cache_present_nbits = nregs;
+ }
+
+ if (nregs > map->cache_present_nbits) {
+ cache_present = krealloc(map->cache_present,
+ cache_present_size, GFP_KERNEL);
+ if (!cache_present)
+ return -ENOMEM;
+ for (i = 0; i < nregs; i++)
+ if (i >= map->cache_present_nbits)
+ clear_bit(i, cache_present);
+ map->cache_present = cache_present;
+ map->cache_present_nbits = nregs;
+ }
+
+ set_bit(reg, map->cache_present);
+ return 0;
+}
+
+bool regcache_set_val(struct regmap *map, void *base, unsigned int idx,
+ unsigned int val)
+{
+ if (regcache_get_val(map, base, idx) == val)
+ 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) {
case 1: {
u8 *cache = base;
- if (cache[idx] == val)
- return true;
cache[idx] = val;
break;
}
case 2: {
u16 *cache = base;
- if (cache[idx] == val)
- return true;
cache[idx] = val;
break;
}
case 4: {
u32 *cache = base;
- if (cache[idx] == val)
- return true;
cache[idx] = val;
break;
}
@@ -448,13 +489,18 @@ 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) {
+ /* Use device native format if possible */
+ if (map->format.parse_val)
+ return map->format.parse_val(regcache_get_val_addr(map, base,
+ idx));
+
+ switch (map->cache_word_size) {
case 1: {
const u8 *cache = base;
return cache[idx];
@@ -498,3 +544,117 @@ int regcache_lookup_reg(struct regmap *map, unsigned int reg)
else
return -ENOENT;
}
+
+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;
+}
+
+static int regcache_sync_block_raw_flush(struct regmap *map, const void **data,
+ unsigned int base, unsigned int cur)
+{
+ size_t val_bytes = map->format.val_bytes;
+ int ret, count;
+
+ if (*data == NULL)
+ return 0;
+
+ count = cur - base;
+
+ dev_dbg(map->dev, "Writing %zu bytes for %d registers from 0x%x-0x%x\n",
+ count * val_bytes, count, base, cur - 1);
+
+ map->cache_bypass = 1;
+
+ ret = _regmap_raw_write(map, base, *data, count * val_bytes,
+ false);
+
+ map->cache_bypass = 0;
+
+ *data = NULL;
+
+ return ret;
+}
+
+static int regcache_sync_block_raw(struct regmap *map, void *block,
+ unsigned int block_base, unsigned int start,
+ unsigned int end)
+{
+ unsigned int i, val;
+ unsigned int regtmp = 0;
+ unsigned int base = 0;
+ const void *data = NULL;
+ int ret;
+
+ for (i = start; i < end; i++) {
+ regtmp = block_base + (i * map->reg_stride);
+
+ if (!regcache_reg_present(map, regtmp)) {
+ ret = regcache_sync_block_raw_flush(map, &data,
+ base, regtmp);
+ if (ret != 0)
+ return ret;
+ 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) {
+ ret = regcache_sync_block_raw_flush(map, &data,
+ base, regtmp);
+ if (ret != 0)
+ return ret;
+ continue;
+ }
+
+ if (!data) {
+ data = regcache_get_val_addr(map, block, i);
+ base = regtmp;
+ }
+ }
+
+ return regcache_sync_block_raw_flush(map, &data, base, regtmp);
+}
+
+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);
+}
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 672ac08..a941dcf 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -228,30 +228,39 @@ static void regmap_format_32_native(void *buf, unsigned int val,
*(u32 *)buf = val << shift;
}
-static unsigned int regmap_parse_8(void *buf)
+static void regmap_parse_inplace_noop(void *buf)
{
- u8 *b = buf;
+}
+
+static unsigned int regmap_parse_8(const void *buf)
+{
+ const u8 *b = buf;
return b[0];
}
-static unsigned int regmap_parse_16_be(void *buf)
+static unsigned int regmap_parse_16_be(const void *buf)
+{
+ const __be16 *b = buf;
+
+ return be16_to_cpu(b[0]);
+}
+
+static void regmap_parse_16_be_inplace(void *buf)
{
__be16 *b = buf;
b[0] = be16_to_cpu(b[0]);
-
- return b[0];
}
-static unsigned int regmap_parse_16_native(void *buf)
+static unsigned int regmap_parse_16_native(const void *buf)
{
return *(u16 *)buf;
}
-static unsigned int regmap_parse_24(void *buf)
+static unsigned int regmap_parse_24(const void *buf)
{
- u8 *b = buf;
+ const u8 *b = buf;
unsigned int ret = b[2];
ret |= ((unsigned int)b[1]) << 8;
ret |= ((unsigned int)b[0]) << 16;
@@ -259,16 +268,21 @@ static unsigned int regmap_parse_24(void *buf)
return ret;
}
-static unsigned int regmap_parse_32_be(void *buf)
+static unsigned int regmap_parse_32_be(const void *buf)
+{
+ const __be32 *b = buf;
+
+ return be32_to_cpu(b[0]);
+}
+
+static void regmap_parse_32_be_inplace(void *buf)
{
__be32 *b = buf;
b[0] = be32_to_cpu(b[0]);
-
- return b[0];
}
-static unsigned int regmap_parse_32_native(void *buf)
+static unsigned int regmap_parse_32_native(const void *buf)
{
return *(u32 *)buf;
}
@@ -555,16 +569,21 @@ struct regmap *regmap_init(struct device *dev,
goto err_map;
}
+ if (val_endian == REGMAP_ENDIAN_NATIVE)
+ map->format.parse_inplace = regmap_parse_inplace_noop;
+
switch (config->val_bits) {
case 8:
map->format.format_val = regmap_format_8;
map->format.parse_val = regmap_parse_8;
+ map->format.parse_inplace = regmap_parse_inplace_noop;
break;
case 16:
switch (val_endian) {
case REGMAP_ENDIAN_BIG:
map->format.format_val = regmap_format_16_be;
map->format.parse_val = regmap_parse_16_be;
+ map->format.parse_inplace = regmap_parse_16_be_inplace;
break;
case REGMAP_ENDIAN_NATIVE:
map->format.format_val = regmap_format_16_native;
@@ -585,6 +604,7 @@ struct regmap *regmap_init(struct device *dev,
case REGMAP_ENDIAN_BIG:
map->format.format_val = regmap_format_32_be;
map->format.parse_val = regmap_parse_32_be;
+ map->format.parse_inplace = regmap_parse_32_be_inplace;
break;
case REGMAP_ENDIAN_NATIVE:
map->format.format_val = regmap_format_32_native;
@@ -917,8 +937,8 @@ static int _regmap_select_page(struct regmap *map, unsigned int *reg,
return 0;
}
-static int _regmap_raw_write(struct regmap *map, unsigned int reg,
- const void *val, size_t val_len, bool async)
+int _regmap_raw_write(struct regmap *map, unsigned int reg,
+ const void *val, size_t val_len, bool async)
{
struct regmap_range_node *range;
unsigned long flags;
@@ -930,7 +950,7 @@ static int _regmap_raw_write(struct regmap *map, unsigned int reg,
size_t len;
int i;
- BUG_ON(!map->bus);
+ WARN_ON(!map->bus);
/* Check for unwritable registers before we start */
if (map->writeable_reg)
@@ -943,8 +963,7 @@ static int _regmap_raw_write(struct regmap *map, unsigned int reg,
unsigned int ival;
int val_bytes = map->format.val_bytes;
for (i = 0; i < val_len / val_bytes; i++) {
- memcpy(map->work_buf, val + (i * val_bytes), val_bytes);
- ival = map->format.parse_val(map->work_buf);
+ ival = map->format.parse_val(val + (i * val_bytes));
ret = regcache_write(map, reg + (i * map->reg_stride),
ival);
if (ret) {
@@ -1081,6 +1100,17 @@ static int _regmap_raw_write(struct regmap *map, unsigned int reg,
return ret;
}
+/**
+ * regmap_can_raw_write - Test if regmap_raw_write() is supported
+ *
+ * @map: Map to check.
+ */
+bool regmap_can_raw_write(struct regmap *map)
+{
+ return map->bus && map->format.format_val && map->format.format_reg;
+}
+EXPORT_SYMBOL_GPL(regmap_can_raw_write);
+
static int _regmap_bus_formatted_write(void *context, unsigned int reg,
unsigned int val)
{
@@ -1088,7 +1118,7 @@ static int _regmap_bus_formatted_write(void *context, unsigned int reg,
struct regmap_range_node *range;
struct regmap *map = context;
- BUG_ON(!map->bus || !map->format.format_write);
+ WARN_ON(!map->bus || !map->format.format_write);
range = _regmap_range_lookup(map, reg);
if (range) {
@@ -1114,7 +1144,7 @@ static int _regmap_bus_raw_write(void *context, unsigned int reg,
{
struct regmap *map = context;
- BUG_ON(!map->bus || !map->format.format_val);
+ WARN_ON(!map->bus || !map->format.format_val);
map->format.format_val(map->work_buf + map->format.reg_bytes
+ map->format.pad_bytes, val, 0);
@@ -1204,12 +1234,10 @@ int regmap_raw_write(struct regmap *map, unsigned int reg,
{
int ret;
- if (!map->bus)
+ if (!regmap_can_raw_write(map))
return -EINVAL;
if (val_len % map->format.val_bytes)
return -EINVAL;
- if (reg % map->reg_stride)
- return -EINVAL;
map->lock(map->lock_arg);
@@ -1244,7 +1272,7 @@ int regmap_bulk_write(struct regmap *map, unsigned int reg, const void *val,
if (!map->bus)
return -EINVAL;
- if (!map->format.parse_val)
+ if (!map->format.parse_inplace)
return -EINVAL;
if (reg % map->reg_stride)
return -EINVAL;
@@ -1262,7 +1290,7 @@ int regmap_bulk_write(struct regmap *map, unsigned int reg, const void *val,
goto out;
}
for (i = 0; i < val_count * val_bytes; i += val_bytes)
- map->format.parse_val(wval + i);
+ map->format.parse_inplace(wval + i);
}
/*
* Some devices does not support bulk write, for
@@ -1340,7 +1368,7 @@ static int _regmap_raw_read(struct regmap *map, unsigned int reg, void *val,
u8 *u8 = map->work_buf;
int ret;
- BUG_ON(!map->bus);
+ WARN_ON(!map->bus);
range = _regmap_range_lookup(map, reg);
if (range) {
@@ -1395,7 +1423,7 @@ static int _regmap_read(struct regmap *map, unsigned int reg,
int ret;
void *context = _regmap_map_get_context(map);
- BUG_ON(!map->reg_read);
+ WARN_ON(!map->reg_read);
if (!map->cache_bypass) {
ret = regcache_read(map, reg, val);
@@ -1523,7 +1551,7 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val,
if (!map->bus)
return -EINVAL;
- if (!map->format.parse_val)
+ if (!map->format.parse_inplace)
return -EINVAL;
if (reg % map->reg_stride)
return -EINVAL;
@@ -1550,7 +1578,7 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val,
}
for (i = 0; i < val_count * val_bytes; i += val_bytes)
- map->format.parse_val(val + i);
+ map->format.parse_inplace(val + i);
} else {
for (i = 0; i < val_count; i++) {
unsigned int ival;
diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index bf77dfd..02d84e2 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -389,6 +389,7 @@ int regmap_update_bits_check(struct regmap *map, unsigned int reg,
bool *change);
int regmap_get_val_bytes(struct regmap *map);
int regmap_async_complete(struct regmap *map);
+bool regmap_can_raw_write(struct regmap *map);
int regcache_sync(struct regmap *map);
int regcache_sync_region(struct regmap *map, unsigned int min,
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