hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

regmap: Merge redundant handling in regmap_bulk_write 

The handling for the first two cases in regmap_bulk_write is
essentially identical. The first case is just a better implementation of
the second, supporting 8 byte registers and doing the locking manually to
avoid bouncing the lock for each register. Drop some redundant code by
removing the second of these cases and allowing both situations to be
handled by the same code.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Charles Keepax 2018-02-22 12:59:14 +00:00 committed by Mark Brown
parent 364e378b8d
commit fb44f3cec3
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 3 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
drivers/base/regmap/regmap.c
View File

@ -1965,17 +1965,10 @@ int regmap_bulk_write(struct regmap *map, unsigned int reg, const void *val,
return -EINVAL;
/*
* Some devices don't support bulk write, for
* them we have a series of single write operations in the first two if
* blocks.
*
* The first if block is used for memory mapped io. It does not allow
* val_bytes of 3 for example.
* The second one is for busses that do not provide raw I/O.
* The third one is used for busses which do not have these limitations
* and can write arbitrary value lengths.
* Some devices don't support bulk write, for them we have a series of
* single write operations.
*/
if (!map->bus) {
if (!map->bus || !map->format.parse_inplace) {
map->lock(map->lock_arg);
for (i = 0; i < val_count; i++) {
unsigned int ival;
@ -2008,32 +2001,6 @@ int regmap_bulk_write(struct regmap *map, unsigned int reg, const void *val,
}
out:
map->unlock(map->lock_arg);
} else if (map->bus && !map->format.parse_inplace) {
const u8 *u8 = val;
const u16 *u16 = val;
const u32 *u32 = val;
unsigned int ival;
for (i = 0; i < val_count; i++) {
switch (map->format.val_bytes) {
case 4:
ival = u32[i];
break;
case 2:
ival = u16[i];
break;
case 1:
ival = u8[i];
break;
default:
return -EINVAL;
}
ret = regmap_write(map, reg + regmap_get_offset(map, i),
ival);
if (ret)
return ret;
}
} else {
void *wval;