diff options
| author | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2015-06-16 08:52:22 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-07-10 11:38:00 +0100 |
| commit | 7ff0589c7bff4ca31b255ac2028f633f14047762 (patch) | |
| tree | 0f4c4393bda1c5ec5c8aec95fa06feaa3dd1a4ea /drivers/base/regmap/regmap.c | |
| parent | d770e558e21961ad6cfdf0ff7df0eb5d7d4f0754 (diff) | |
regmap: add force_write option on _regmap_update_bits()
Sometimes we want to write data even though it doesn't change value.
Then, force_write option on _regmap_update_bits() helps this purpose.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/base/regmap/regmap.c')
| -rw-r--r-- | drivers/base/regmap/regmap.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 7111d04f2621..69ec411ce722 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -34,7 +34,7 @@ static int _regmap_update_bits(struct regmap *map, unsigned int reg, unsigned int mask, unsigned int val, - bool *change); + bool *change, bool force_write); static int _regmap_bus_reg_read(void *context, unsigned int reg, unsigned int *val); @@ -1178,7 +1178,7 @@ static int _regmap_select_page(struct regmap *map, unsigned int *reg, ret = _regmap_update_bits(map, range->selector_reg, range->selector_mask, win_page << range->selector_shift, - &page_chg); + &page_chg, false); map->work_buf = orig_work_buf; @@ -2327,7 +2327,7 @@ EXPORT_SYMBOL_GPL(regmap_bulk_read); static int _regmap_update_bits(struct regmap *map, unsigned int reg, unsigned int mask, unsigned int val, - bool *change) + bool *change, bool force_write) { int ret; unsigned int tmp, orig; @@ -2339,7 +2339,7 @@ static int _regmap_update_bits(struct regmap *map, unsigned int reg, tmp = orig & ~mask; tmp |= val & mask; - if (tmp != orig) { + if (force_write || (tmp != orig)) { ret = _regmap_write(map, reg, tmp); if (change) *change = true; @@ -2367,7 +2367,7 @@ int regmap_update_bits(struct regmap *map, unsigned int reg, int ret; map->lock(map->lock_arg); - ret = _regmap_update_bits(map, reg, mask, val, NULL); + ret = _regmap_update_bits(map, reg, mask, val, NULL, false); map->unlock(map->lock_arg); return ret; @@ -2398,7 +2398,7 @@ int regmap_update_bits_async(struct regmap *map, unsigned int reg, map->async = true; - ret = _regmap_update_bits(map, reg, mask, val, NULL); + ret = _regmap_update_bits(map, reg, mask, val, NULL, false); map->async = false; @@ -2427,7 +2427,7 @@ int regmap_update_bits_check(struct regmap *map, unsigned int reg, int ret; map->lock(map->lock_arg); - ret = _regmap_update_bits(map, reg, mask, val, change); + ret = _regmap_update_bits(map, reg, mask, val, change, false); map->unlock(map->lock_arg); return ret; } @@ -2460,7 +2460,7 @@ int regmap_update_bits_check_async(struct regmap *map, unsigned int reg, map->async = true; - ret = _regmap_update_bits(map, reg, mask, val, change); + ret = _regmap_update_bits(map, reg, mask, val, change, false); map->async = false; |