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regulator: max77686: Add suspend disable for some LDOs 

Some LDOs of Maxim 77686 PMIC support disabling during system suspend
(LDO{2,6,7,8,10,11,12,14,15,16}). This was already implemented as part
of set_suspend_mode function. In that case the mode was one of:
 - disable,
 - normal mode,
 - low power mode.
However there are no bindings for setting the mode during suspend.

Add suspend disable for LDO regulators supporting this. Re-use existing
max77686_buck_set_suspend_disable() function. This helps reducing
energy consumption during system sleep.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Krzysztof Kozlowski 2014-10-29 12:14:52 +01:00 committed by Mark Brown
parent 68c5d1868b
commit 78ce612860
1 changed files with 8 additions and 4 deletions
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12
drivers/regulator/max77686.c
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@ -99,8 +99,8 @@ static unsigned int max77686_get_opmode_shift(int id)
}
}
/* Some BUCKS supports Normal[ON/OFF] mode during suspend */
static int max77686_buck_set_suspend_disable(struct regulator_dev *rdev)
/* Some BUCKs and LDOs supports Normal[ON/OFF] mode during suspend */
static int max77686_set_suspend_disable(struct regulator_dev *rdev)
{
unsigned int val, shift;
struct max77686_data *max77686 = rdev_get_drvdata(rdev);
@ -195,6 +195,9 @@ static int max77686_enable(struct regulator_dev *rdev)
shift = max77686_get_opmode_shift(id);
if (max77686->opmode[id] == MAX77686_OFF_PWRREQ)
max77686->opmode[id] = MAX77686_NORMAL;
return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
rdev->desc->enable_mask,
max77686->opmode[id] << shift);
@ -247,6 +250,7 @@ static struct regulator_ops max77686_ldo_ops = {
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.set_voltage_time_sel = regulator_set_voltage_time_sel,
.set_suspend_mode = max77686_ldo_set_suspend_mode,
.set_suspend_disable = max77686_set_suspend_disable,
};
static struct regulator_ops max77686_buck1_ops = {
@ -258,7 +262,7 @@ static struct regulator_ops max77686_buck1_ops = {
.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_suspend_disable = max77686_buck_set_suspend_disable,
.set_suspend_disable = max77686_set_suspend_disable,
};
static struct regulator_ops max77686_buck_dvs_ops = {
@ -271,7 +275,7 @@ static struct regulator_ops max77686_buck_dvs_ops = {
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.set_voltage_time_sel = regulator_set_voltage_time_sel,
.set_ramp_delay = max77686_set_ramp_delay,
.set_suspend_disable = max77686_buck_set_suspend_disable,
.set_suspend_disable = max77686_set_suspend_disable,
};
#define regulator_desc_ldo(num) { \