regulator: support list voltage in da903x
Make da903x driver to list voltage and count voltage.
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
diff --git a/drivers/regulator/da903x.c b/drivers/regulator/da903x.c
index d8d251f..236de113 100644
--- a/drivers/regulator/da903x.c
+++ b/drivers/regulator/da903x.c
@@ -87,6 +87,10 @@
int enable_bit;
};
+static int da9034_ldo12_data[] = { 1700, 1750, 1800, 1850, 1900, 1950,
+ 2000, 2050, 2700, 2750, 2800, 2850,
+ 2900, 2950, 3000, 3050 };
+
static inline struct device *to_da903x_dev(struct regulator_dev *rdev)
{
return rdev_get_dev(rdev)->parent->parent;
@@ -170,6 +174,17 @@
return !!(reg_val & (1 << info->enable_bit));
}
+static int da903x_list_voltage(struct regulator_dev *rdev, unsigned selector)
+{
+ struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
+ int ret;
+
+ ret = info->min_uV + info->step_uV * selector;
+ if (ret > info->max_uV)
+ return -EINVAL;
+ return ret;
+}
+
/* DA9030 specific operations */
static int da9030_set_ldo1_15_voltage(struct regulator_dev *rdev,
int min_uV, int max_uV)
@@ -313,9 +328,18 @@
return info->min_uV + info->step_uV * val;
}
+static int da9034_list_ldo12_voltage(struct regulator_dev *rdev,
+ unsigned selector)
+{
+ if (selector > ARRAY_SIZE(da9034_ldo12_data))
+ return -EINVAL;
+ return da9034_ldo12_data[selector] * 1000;
+}
+
static struct regulator_ops da903x_regulator_ldo_ops = {
.set_voltage = da903x_set_ldo_voltage,
.get_voltage = da903x_get_voltage,
+ .list_voltage = da903x_list_voltage,
.enable = da903x_enable,
.disable = da903x_disable,
.is_enabled = da903x_is_enabled,
@@ -325,6 +349,7 @@
static struct regulator_ops da9030_regulator_ldo14_ops = {
.set_voltage = da9030_set_ldo14_voltage,
.get_voltage = da9030_get_ldo14_voltage,
+ .list_voltage = da903x_list_voltage,
.enable = da903x_enable,
.disable = da903x_disable,
.is_enabled = da903x_is_enabled,
@@ -334,6 +359,7 @@
static struct regulator_ops da9030_regulator_ldo1_15_ops = {
.set_voltage = da9030_set_ldo1_15_voltage,
.get_voltage = da903x_get_voltage,
+ .list_voltage = da903x_list_voltage,
.enable = da903x_enable,
.disable = da903x_disable,
.is_enabled = da903x_is_enabled,
@@ -342,6 +368,7 @@
static struct regulator_ops da9034_regulator_dvc_ops = {
.set_voltage = da9034_set_dvc_voltage,
.get_voltage = da903x_get_voltage,
+ .list_voltage = da903x_list_voltage,
.enable = da903x_enable,
.disable = da903x_disable,
.is_enabled = da903x_is_enabled,
@@ -351,6 +378,7 @@
static struct regulator_ops da9034_regulator_ldo12_ops = {
.set_voltage = da9034_set_ldo12_voltage,
.get_voltage = da9034_get_ldo12_voltage,
+ .list_voltage = da9034_list_ldo12_voltage,
.enable = da903x_enable,
.disable = da903x_disable,
.is_enabled = da903x_is_enabled,
@@ -363,6 +391,7 @@
.ops = &da903x_regulator_ldo_ops, \
.type = REGULATOR_VOLTAGE, \
.id = _pmic##_ID_LDO##_id, \
+ .n_voltages = (step) ? ((max - min) / step + 1) : 1, \
.owner = THIS_MODULE, \
}, \
.min_uV = (min) * 1000, \
@@ -382,6 +411,7 @@
.ops = &da9034_regulator_dvc_ops, \
.type = REGULATOR_VOLTAGE, \
.id = DA9030_ID_##_id, \
+ .n_voltages = (step) ? ((max - min) / step + 1) : 1, \
.owner = THIS_MODULE, \
}, \
.min_uV = (min) * 1000, \
@@ -403,6 +433,7 @@
.ops = &da9034_regulator_dvc_ops, \
.type = REGULATOR_VOLTAGE, \
.id = DA9034_ID_##_id, \
+ .n_voltages = (step) ? ((max - min) / step + 1) : 1, \
.owner = THIS_MODULE, \
}, \
.min_uV = (min) * 1000, \
@@ -424,6 +455,7 @@
.ops = &da9034_regulator_dvc_ops, \
.type = REGULATOR_VOLTAGE, \
.id = DA9035_ID_##_id, \
+ .n_voltages = (step) ? ((max - min) / step + 1) : 1, \
.owner = THIS_MODULE, \
}, \
.min_uV = (min) * 1000, \
@@ -517,8 +549,10 @@
}
/* Workaround for the weird LDO12 voltage setting */
- if (ri->desc.id == DA9034_ID_LDO12)
+ if (ri->desc.id == DA9034_ID_LDO12) {
ri->desc.ops = &da9034_regulator_ldo12_ops;
+ ri->desc.n_voltages = ARRAY_SIZE(da9034_ldo12_data);
+ }
if (ri->desc.id == DA9030_ID_LDO14)
ri->desc.ops = &da9030_regulator_ldo14_ops;
