[4/8] regulator: mp8859: Support mode operations
Commit Message
The MP8859 provides mode control, implement the relevant regulator API
operations.
Signed-off-by: Mark Brown <broonie@kernel.org>
---
drivers/regulator/mp8859.c | 39 +++++++++++++++++++++++++++++++++++++++
1 file changed, 39 insertions(+)
@@ -36,6 +36,7 @@
#define MP8859_GO_BIT 0x01
#define MP8859_ENABLE_MASK 0x80
+#define MP8859_MODE_MASK 0x08
static int mp8859_set_voltage_sel(struct regulator_dev *rdev, unsigned int sel)
{
@@ -74,6 +75,42 @@ static int mp8859_get_voltage_sel(struct regulator_dev *rdev)
return val;
}
+static unsigned int mp8859_get_mode(struct regulator_dev *rdev)
+{
+ unsigned int val;
+ int ret;
+
+ ret = regmap_read(rdev->regmap, MP8859_CTL1_REG, &val);
+ if (ret != 0) {
+ dev_err(&rdev->dev, "Failed to read mode: %d\n", ret);
+ return 0;
+ }
+
+ if (val & MP8859_MODE_MASK)
+ return REGULATOR_MODE_FAST;
+ else
+ return REGULATOR_MODE_NORMAL;
+}
+
+static int mp8859_set_mode(struct regulator_dev *rdev, unsigned int mode)
+{
+ unsigned int val;
+
+ switch (mode) {
+ case REGULATOR_MODE_FAST:
+ val = MP8859_MODE_MASK;
+ break;
+ case REGULATOR_MODE_NORMAL:
+ val = 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return regmap_update_bits(rdev->regmap, MP8859_CTL1_REG,
+ MP8859_MODE_MASK, val);
+}
+
static const struct linear_range mp8859_dcdc_ranges[] = {
REGULATOR_LINEAR_RANGE(0, VOL_MIN_IDX, VOL_MAX_IDX, 10000),
};
@@ -128,6 +165,8 @@ static const struct regulator_ops mp8859_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
+ .set_mode = mp8859_set_mode,
+ .get_mode = mp8859_get_mode,
};
static const struct regulator_desc mp8859_regulators[] = {