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regulator: max77802: Add .{get,set}_mode callbacks 

Some max77802 LDOs (1, 3, 20 and 21) support to be configured in Low
Power Mode during system normal operation. Add function handlers for
the .get_mode and .set_mode operations to set the mode on these LDOs.

Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Javier Martinez Canillas 2014-10-16 18:48:47 +02:00 committed by Mark Brown
parent b0615f1da5
commit efbe519945
1 changed files with 46 additions and 0 deletions
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46
drivers/regulator/max77802.c
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@ -70,6 +70,12 @@ struct max77802_regulator_prv {
unsigned int opmode[MAX77802_REG_MAX];
};
static inline int max77802_map_mode(int mode)
{
return mode == MAX77802_OPMODE_NORMAL ?
REGULATOR_MODE_NORMAL : REGULATOR_MODE_STANDBY;
}
static int max77802_get_opmode_shift(int id)
{
if (id == MAX77802_BUCK1 || (id >= MAX77802_BUCK5 &&
@ -104,6 +110,44 @@ static int max77802_set_suspend_disable(struct regulator_dev *rdev)
rdev->desc->enable_mask, val << shift);
}
/*
* Some LDOs support Low Power Mode while the system is running.
*
* LDOs 1, 3, 20, 21.
*/
static int max77802_set_mode(struct regulator_dev *rdev, unsigned int mode)
{
struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev);
int id = rdev_get_id(rdev);
unsigned int val;
int shift = max77802_get_opmode_shift(id);
switch (mode) {
case REGULATOR_MODE_STANDBY:
val = MAX77802_OPMODE_LP; /* ON in Low Power Mode */
break;
case REGULATOR_MODE_NORMAL:
val = MAX77802_OPMODE_NORMAL; /* ON in Normal Mode */
break;
default:
dev_warn(&rdev->dev, "%s: regulator mode: 0x%x not supported\n",
rdev->desc->name, mode);
return -EINVAL;
}
max77802->opmode[id] = val;
return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
rdev->desc->enable_mask, val << shift);
}
static unsigned max77802_get_mode(struct regulator_dev *rdev)
{
struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev);
int id = rdev_get_id(rdev);
return max77802_map_mode(max77802->opmode[id]);
}
/*
* Some LDOs supports LPM-ON/OFF/Normal-ON mode during suspend state
* (Enable Control Logic1 by PWRREQ)
@ -268,6 +312,8 @@ static struct regulator_ops max77802_ldo_ops_logic2 = {
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.set_voltage_time_sel = regulator_set_voltage_time_sel,
.set_mode = max77802_set_mode,
.get_mode = max77802_get_mode,
.set_suspend_mode = max77802_ldo_set_suspend_mode_logic2,
};