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authorJavier Martinez Canillas <javier.martinez@collabora.co.uk>2014-10-16 18:48:47 +0200
committerMark Brown <broonie@kernel.org>2014-10-20 12:23:50 +0100
commitefbe519945746371f92f5c3796818bf3e24c80ad (patch)
tree7467b57dd71f6b0a8b4eb61e24cdc61cc8aa29b1 /drivers/regulator
parentb0615f1da543500f8442fa6e5adacb8c54b34c5f (diff)
downloadop-kernel-dev-efbe519945746371f92f5c3796818bf3e24c80ad.zip
op-kernel-dev-efbe519945746371f92f5c3796818bf3e24c80ad.tar.gz
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>
Diffstat (limited to 'drivers/regulator')
-rw-r--r--drivers/regulator/max77802.c46
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/regulator/max77802.c b/drivers/regulator/max77802.c
index 8425c0d..6eabb95 100644
--- a/drivers/regulator/max77802.c
+++ b/drivers/regulator/max77802.c
@@ -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 &&
@@ -105,6 +111,44 @@ static int max77802_set_suspend_disable(struct regulator_dev *rdev)
}
/*
+ * 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,
};
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