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path: root/drivers/regulator/pwm-regulator.c
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Diffstat (limited to 'drivers/regulator/pwm-regulator.c')
-rw-r--r--drivers/regulator/pwm-regulator.c41
1 files changed, 17 insertions, 24 deletions
diff --git a/drivers/regulator/pwm-regulator.c b/drivers/regulator/pwm-regulator.c
index 253833ae3..ffa96124a 100644
--- a/drivers/regulator/pwm-regulator.c
+++ b/drivers/regulator/pwm-regulator.c
@@ -21,10 +21,8 @@
#include <linux/pwm.h>
struct pwm_regulator_data {
- struct regulator_desc desc;
struct pwm_voltages *duty_cycle_table;
struct pwm_device *pwm;
- bool enabled;
int state;
};
@@ -33,17 +31,17 @@ struct pwm_voltages {
unsigned int dutycycle;
};
-static int pwm_regulator_get_voltage_sel(struct regulator_dev *dev)
+static int pwm_regulator_get_voltage_sel(struct regulator_dev *rdev)
{
- struct pwm_regulator_data *drvdata = rdev_get_drvdata(dev);
+ struct pwm_regulator_data *drvdata = rdev_get_drvdata(rdev);
return drvdata->state;
}
-static int pwm_regulator_set_voltage_sel(struct regulator_dev *dev,
+static int pwm_regulator_set_voltage_sel(struct regulator_dev *rdev,
unsigned selector)
{
- struct pwm_regulator_data *drvdata = rdev_get_drvdata(dev);
+ struct pwm_regulator_data *drvdata = rdev_get_drvdata(rdev);
unsigned int pwm_reg_period;
int dutycycle;
int ret;
@@ -55,30 +53,27 @@ static int pwm_regulator_set_voltage_sel(struct regulator_dev *dev,
ret = pwm_config(drvdata->pwm, dutycycle, pwm_reg_period);
if (ret) {
- dev_err(&dev->dev, "Failed to configure PWM\n");
+ dev_err(&rdev->dev, "Failed to configure PWM\n");
return ret;
}
drvdata->state = selector;
- if (!drvdata->enabled) {
- ret = pwm_enable(drvdata->pwm);
- if (ret) {
- dev_err(&dev->dev, "Failed to enable PWM\n");
- return ret;
- }
- drvdata->enabled = true;
+ ret = pwm_enable(drvdata->pwm);
+ if (ret) {
+ dev_err(&rdev->dev, "Failed to enable PWM\n");
+ return ret;
}
return 0;
}
-static int pwm_regulator_list_voltage(struct regulator_dev *dev,
+static int pwm_regulator_list_voltage(struct regulator_dev *rdev,
unsigned selector)
{
- struct pwm_regulator_data *drvdata = rdev_get_drvdata(dev);
+ struct pwm_regulator_data *drvdata = rdev_get_drvdata(rdev);
- if (selector >= drvdata->desc.n_voltages)
+ if (selector >= rdev->desc->n_voltages)
return -EINVAL;
return drvdata->duty_cycle_table[selector].uV;
@@ -91,7 +86,7 @@ static struct regulator_ops pwm_regulator_voltage_ops = {
.map_voltage = regulator_map_voltage_iterate,
};
-static const struct regulator_desc pwm_regulator_desc = {
+static struct regulator_desc pwm_regulator_desc = {
.name = "pwm-regulator",
.ops = &pwm_regulator_voltage_ops,
.type = REGULATOR_VOLTAGE,
@@ -117,8 +112,6 @@ static int pwm_regulator_probe(struct platform_device *pdev)
if (!drvdata)
return -ENOMEM;
- memcpy(&drvdata->desc, &pwm_regulator_desc, sizeof(pwm_regulator_desc));
-
/* determine the number of voltage-table */
prop = of_find_property(np, "voltage-table", &length);
if (!prop) {
@@ -133,7 +126,7 @@ static int pwm_regulator_probe(struct platform_device *pdev)
return -EINVAL;
}
- drvdata->desc.n_voltages = length / sizeof(*drvdata->duty_cycle_table);
+ pwm_regulator_desc.n_voltages = length / sizeof(*drvdata->duty_cycle_table);
drvdata->duty_cycle_table = devm_kzalloc(&pdev->dev,
length, GFP_KERNEL);
@@ -150,7 +143,7 @@ static int pwm_regulator_probe(struct platform_device *pdev)
}
config.init_data = of_get_regulator_init_data(&pdev->dev, np,
- &drvdata->desc);
+ &pwm_regulator_desc);
if (!config.init_data)
return -ENOMEM;
@@ -165,10 +158,10 @@ static int pwm_regulator_probe(struct platform_device *pdev)
}
regulator = devm_regulator_register(&pdev->dev,
- &drvdata->desc, &config);
+ &pwm_regulator_desc, &config);
if (IS_ERR(regulator)) {
dev_err(&pdev->dev, "Failed to register regulator %s\n",
- drvdata->desc.name);
+ pwm_regulator_desc.name);
return PTR_ERR(regulator);
}