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@xxxxxxxxxxxxxxx>
---
drivers/regulator/max77802.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 44 insertions(+)
diff --git a/drivers/regulator/max77802.c b/drivers/regulator/max77802.c
index 26f6963..baf834d 100644
--- a/drivers/regulator/max77802.c
+++ b/drivers/regulator/max77802.c
@@ -51,6 +51,9 @@
#define MAX77802_OFF_PWRREQ 0x1
+#define MAX77802_MODE(pval) ((pval == MAX77802_OPMODE_NORMAL) ? \
+ REGULATOR_MODE_NORMAL : REGULATOR_MODE_STANDBY)
+
/* MAX77802 has two register formats: 2-bit and 4-bit */
static const unsigned int ramp_table_77802_2bit[] = {
12500,
@@ -105,6 +108,45 @@ 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_IDLE:
+ 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_MODE(max77802->opmode[id]);
+}
+
+/*
* Some LDOs supports LPM-ON/OFF/Normal-ON mode during suspend state
* (Enable Control Logic1 by PWRREQ)
*
@@ -268,6 +310,8 @@ 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,
};
--
2.1.0
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