AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

Merge remote-tracking branch 'regmap/topic/core' into regmap-next

Browse Source
This commit is contained in:
Mark Brown 2014-01-09 14:34:13 +00:00
commit eec8ae7a54
2 changed files with 47 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

72
drivers/base/regmap/regmap.c
View File

@ -1514,21 +1514,49 @@ int regmap_bulk_write(struct regmap *map, unsigned int reg, const void *val,
{
int ret = 0, i;
size_t val_bytes = map->format.val_bytes;
void *wval;
if (!map->bus)
return -EINVAL;
if (!map->format.parse_inplace)
if (map->bus && !map->format.parse_inplace)
return -EINVAL;
if (reg % map->reg_stride)
return -EINVAL;
map->lock(map->lock_arg);
/*
* Some devices don't support bulk write, for
* them we have a series of single write operations.
*/
if (!map->bus || map->use_single_rw) {
for (i = 0; i < val_count; i++) {
unsigned int ival;
/* No formatting is require if val_byte is 1 */
if (val_bytes == 1) {
wval = (void *)val;
switch (val_bytes) {
case 1:
ival = *(u8 *)(val + (i * val_bytes));
break;
case 2:
ival = *(u16 *)(val + (i * val_bytes));
break;
case 4:
ival = *(u32 *)(val + (i * val_bytes));
break;
#ifdef CONFIG_64BIT
case 8:
ival = *(u64 *)(val + (i * val_bytes));
break;
#endif
default:
ret = -EINVAL;
goto out;
}
ret = _regmap_write(map, reg + (i * map->reg_stride),
ival);
if (ret != 0)
goto out;
}
} else {
void *wval;
wval = kmemdup(val, val_count * val_bytes, GFP_KERNEL);
if (!wval) {
ret = -ENOMEM;
@ -1537,27 +1565,11 @@ int regmap_bulk_write(struct regmap *map, unsigned int reg, const void *val,
}
for (i = 0; i < val_count * val_bytes; i += val_bytes)
map->format.parse_inplace(wval + i);
}
/*
* Some devices does not support bulk write, for
* them we have a series of single write operations.
*/
if (map->use_single_rw) {
for (i = 0; i < val_count; i++) {
ret = _regmap_raw_write(map,
reg + (i * map->reg_stride),
val + (i * val_bytes),
val_bytes);
if (ret != 0)
goto out;
}
} else {
ret = _regmap_raw_write(map, reg, wval, val_bytes * val_count);
}
if (val_bytes != 1)
kfree(wval);
}
out:
map->unlock(map->lock_arg);
return ret;
@ -1897,14 +1909,10 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val,
size_t val_bytes = map->format.val_bytes;
bool vol = regmap_volatile_range(map, reg, val_count);
if (!map->bus)
return -EINVAL;
if (!map->format.parse_inplace)
return -EINVAL;
if (reg % map->reg_stride)
return -EINVAL;
if (vol || map->cache_type == REGCACHE_NONE) {
if (map->bus && map->format.parse_inplace && (vol || map->cache_type == REGCACHE_NONE)) {
/*
* Some devices does not support bulk read, for
* them we have a series of single read operations.
@ -2173,6 +2181,10 @@ int regmap_register_patch(struct regmap *map, const struct reg_default *regs,
int i, ret;
bool bypass;
if (WARN_ONCE(num_regs <= 0, "invalid registers number (%d)\n",
num_regs))
return 0;
map->lock(map->lock_arg);
bypass = map->cache_bypass;

10
include/linux/regmap.h
View File

@ -122,9 +122,9 @@ typedef void (*regmap_unlock)(void *);
* volatile_table (see below) is not, the check is performed on
* such table (a register is volatile if it belongs to one of
* the ranges specified by volatile_table).
* @precious_reg: Optional callback returning true if the rgister
* @precious_reg: Optional callback returning true if the register
* should not be read outside of a call from the driver
* (eg, a clear on read interrupt status register). If this
* (e.g., a clear on read interrupt status register). If this
* field is NULL but precious_table (see below) is not, the
* check is performed on such table (a register is precious if
* it belongs to one of the ranges specified by precious_table).
@ -136,9 +136,9 @@ typedef void (*regmap_unlock)(void *);
* are not overridden).
* @reg_read: Optional callback that if filled will be used to perform
* all the reads from the registers. Should only be provided for
* devices whos read operation cannot be represented as a simple read
* operation on a bus such as SPI, I2C, etc. Most of the devices do
* not need this.
* devices whose read operation cannot be represented as a simple
* read operation on a bus such as SPI, I2C, etc. Most of the
* devices do not need this.
* @reg_write: Same as above for writing.
* @fast_io: Register IO is fast. Use a spinlock instead of a mutex
* to perform locking. This field is ignored if custom lock/unlock