diff options
| author | Jin Park <jinyoungp@nvidia.com> | 2011-06-25 17:00:03 +0900 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2011-11-30 21:47:17 -0800 |
| commit | 524a1168d335d4c9e21fad1249777822d576aa00 (patch) | |
| tree | 991ca785640b0ee65bd562ba0d550cfeb30c4e02 /drivers/mfd | |
| parent | 938b7b59ffab98ca69681a36705130517409b92d (diff) | |
arm: mfd/regulator: tps80031: Adding force_update for status register
The state register is read and write register, if read, it returned
current state, not current written value in register.
So if it want to write the value into state register, it must unconditional
write the value, don't use update(read and compare and then write).
Bug 838189
Original-Change-Id: I2555875a822f159e664b0834af2d00073c859acd
Signed-off-by: Jin Park <jinyoungp@nvidia.com>
Reviewed-on: http://git-master/r/38396
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
Rebase-Id: Ra90d4ccbe0373bbdad44422e8ff6798eea96019a
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/tps80031.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/mfd/tps80031.c b/drivers/mfd/tps80031.c index 4b80f65cc924..39f7f2ee3149 100644 --- a/drivers/mfd/tps80031.c +++ b/drivers/mfd/tps80031.c @@ -313,6 +313,29 @@ out: } EXPORT_SYMBOL_GPL(tps80031_update); +int tps80031_force_update(struct device *dev, int sid, int reg, uint8_t val, + uint8_t mask) +{ + struct tps80031 *tps80031 = dev_get_drvdata(dev); + struct tps80031_client *tps = &tps80031->tps_clients[sid]; + uint8_t reg_val; + int ret = 0; + + mutex_lock(&tps->lock); + + ret = __tps80031_read(tps->client, reg, ®_val); + if (ret) + goto out; + + reg_val = (reg_val & ~mask) | (val & mask); + ret = __tps80031_write(tps->client, reg, reg_val); + +out: + mutex_unlock(&tps->lock); + return ret; +} +EXPORT_SYMBOL_GPL(tps80031_force_update); + static struct tps80031 *tps80031_dev; int tps80031_power_off(void) { |