From 78ce612860ce80edbec9171b4a786ce131a9631c Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Wed, 29 Oct 2014 12:14:52 +0100 Subject: [PATCH] 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 Reviewed-by: Javier Martinez Canillas Signed-off-by: Mark Brown --- drivers/regulator/max77686.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/regulator/max77686.c b/drivers/regulator/max77686.c index 0c1541754e8c..09b0d8c20a9d 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) { \ -- 2.34.1