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authorKrzysztof Kozlowski <k.kozlowski@samsung.com>2014-10-29 12:14:52 +0100
committerMark Brown <broonie@kernel.org>2014-10-31 12:42:52 +0000
commit78ce612860ce80edbec9171b4a786ce131a9631c (patch)
tree2045b94a7aa9ed8af775b90dde80ccd260c9ceb6 /drivers/regulator
parent68c5d1868bfed0643eb4d2c608cead41f6bf4132 (diff)
downloadop-kernel-dev-78ce612860ce80edbec9171b4a786ce131a9631c.zip
op-kernel-dev-78ce612860ce80edbec9171b4a786ce131a9631c.tar.gz
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>
Diffstat (limited to 'drivers/regulator')
-rw-r--r--drivers/regulator/max77686.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/regulator/max77686.c b/drivers/regulator/max77686.c
index 0c15417..09b0d8c 100644
--- a/drivers/regulator/max77686.c
+++ b/drivers/regulator/max77686.c
@@ -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) { \
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