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mfd: Remove unneeded io_mutex from struct twl6040 

Current code has been converted to use regmap APIs, the io_mutex is not needed.
Thus remove the io_mutex.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Axel Lin 2012-07-11 10:06:34 +08:00 committed by Samuel Ortiz
parent 706c96b720
commit c600040f0d
2 changed files with 3 additions and 21 deletions
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23
drivers/mfd/twl6040-core.c
View File

@ -64,19 +64,15 @@ int twl6040_reg_read(struct twl6040 *twl6040, unsigned int reg)
int ret;
unsigned int val;
mutex_lock(&twl6040->io_mutex);
/* Vibra control registers from cache */
if (unlikely(reg == TWL6040_REG_VIBCTLL ||
reg == TWL6040_REG_VIBCTLR)) {
val = twl6040->vibra_ctrl_cache[VIBRACTRL_MEMBER(reg)];
} else {
ret = regmap_read(twl6040->regmap, reg, &val);
if (ret < 0) {
mutex_unlock(&twl6040->io_mutex);
if (ret < 0)
return ret;
}
}
mutex_unlock(&twl6040->io_mutex);
return val;
}
@ -86,12 +82,10 @@ int twl6040_reg_write(struct twl6040 *twl6040, unsigned int reg, u8 val)
{
int ret;
mutex_lock(&twl6040->io_mutex);
ret = regmap_write(twl6040->regmap, reg, val);
/* Cache the vibra control registers */
if (reg == TWL6040_REG_VIBCTLL || reg == TWL6040_REG_VIBCTLR)
twl6040->vibra_ctrl_cache[VIBRACTRL_MEMBER(reg)] = val;
mutex_unlock(&twl6040->io_mutex);
return ret;
}
@ -99,23 +93,13 @@ EXPORT_SYMBOL(twl6040_reg_write);
int twl6040_set_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask)
{
int ret;
mutex_lock(&twl6040->io_mutex);
ret = regmap_update_bits(twl6040->regmap, reg, mask, mask);
mutex_unlock(&twl6040->io_mutex);
return ret;
return regmap_update_bits(twl6040->regmap, reg, mask, mask);
}
EXPORT_SYMBOL(twl6040_set_bits);
int twl6040_clear_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask)
{
int ret;
mutex_lock(&twl6040->io_mutex);
ret = regmap_update_bits(twl6040->regmap, reg, mask, 0);
mutex_unlock(&twl6040->io_mutex);
return ret;
return regmap_update_bits(twl6040->regmap, reg, mask, 0);
}
EXPORT_SYMBOL(twl6040_clear_bits);
@ -573,7 +557,6 @@ static int __devinit twl6040_probe(struct i2c_client *client,
twl6040->irq = client->irq;
mutex_init(&twl6040->mutex);
mutex_init(&twl6040->io_mutex);
init_completion(&twl6040->ready);
twl6040->rev = twl6040_reg_read(twl6040, TWL6040_REG_ASICREV);

1
include/linux/mfd/twl6040.h
View File

@ -206,7 +206,6 @@ struct twl6040 {
struct regmap *regmap;
struct regulator_bulk_data supplies[2]; /* supplies for vio, v2v1 */
struct mutex mutex;
struct mutex io_mutex;
struct mutex irq_mutex;
struct mfd_cell cells[TWL6040_CELLS];
struct completion ready;