summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--drivers/regulator/core.c5
-rw-r--r--drivers/regulator/fixed.c38
-rw-r--r--include/linux/regulator/driver.h2
3 files changed, 12 insertions, 33 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 916cadf45279..960103a61000 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -2582,6 +2582,8 @@ static int _regulator_get_voltage(struct regulator_dev *rdev)
ret = rdev->desc->ops->get_voltage(rdev);
} else if (rdev->desc->ops->list_voltage) {
ret = rdev->desc->ops->list_voltage(rdev, 0);
+ } else if (rdev->desc->fixed_uV && (rdev->desc->n_voltages == 1)) {
+ ret = rdev->desc->fixed_uV;
} else {
return -EINVAL;
}
@@ -3217,7 +3219,8 @@ static int add_regulator_attributes(struct regulator_dev *rdev)
/* some attributes need specific methods to be displayed */
if ((ops->get_voltage && ops->get_voltage(rdev) >= 0) ||
(ops->get_voltage_sel && ops->get_voltage_sel(rdev) >= 0) ||
- (ops->list_voltage && ops->list_voltage(rdev, 0) >= 0)) {
+ (ops->list_voltage && ops->list_voltage(rdev, 0) >= 0) ||
+ (rdev->desc->fixed_uV && (rdev->desc->n_voltages == 1))) {
status = device_create_file(dev, &dev_attr_microvolts);
if (status < 0)
return status;
diff --git a/drivers/regulator/fixed.c b/drivers/regulator/fixed.c
index 7610920014d7..5ea64b94341c 100644
--- a/drivers/regulator/fixed.c
+++ b/drivers/regulator/fixed.c
@@ -34,7 +34,6 @@
struct fixed_voltage_data {
struct regulator_desc desc;
struct regulator_dev *dev;
- int microvolts;
};
@@ -108,30 +107,7 @@ of_get_fixed_voltage_config(struct device *dev)
return config;
}
-static int fixed_voltage_get_voltage(struct regulator_dev *dev)
-{
- struct fixed_voltage_data *data = rdev_get_drvdata(dev);
-
- if (data->microvolts)
- return data->microvolts;
- else
- return -EINVAL;
-}
-
-static int fixed_voltage_list_voltage(struct regulator_dev *dev,
- unsigned selector)
-{
- struct fixed_voltage_data *data = rdev_get_drvdata(dev);
-
- if (selector != 0)
- return -EINVAL;
-
- return data->microvolts;
-}
-
static struct regulator_ops fixed_voltage_ops = {
- .get_voltage = fixed_voltage_get_voltage,
- .list_voltage = fixed_voltage_list_voltage,
};
static int reg_fixed_voltage_probe(struct platform_device *pdev)
@@ -186,23 +162,21 @@ static int reg_fixed_voltage_probe(struct platform_device *pdev)
if (config->microvolts)
drvdata->desc.n_voltages = 1;
- drvdata->microvolts = config->microvolts;
+ drvdata->desc.fixed_uV = config->microvolts;
if (config->gpio >= 0)
cfg.ena_gpio = config->gpio;
cfg.ena_gpio_invert = !config->enable_high;
if (config->enabled_at_boot) {
- if (config->enable_high) {
+ if (config->enable_high)
cfg.ena_gpio_flags |= GPIOF_OUT_INIT_HIGH;
- } else {
+ else
cfg.ena_gpio_flags |= GPIOF_OUT_INIT_LOW;
- }
} else {
- if (config->enable_high) {
+ if (config->enable_high)
cfg.ena_gpio_flags |= GPIOF_OUT_INIT_LOW;
- } else {
+ else
cfg.ena_gpio_flags |= GPIOF_OUT_INIT_HIGH;
- }
}
if (config->gpio_is_open_drain)
cfg.ena_gpio_flags |= GPIOF_OPEN_DRAIN;
@@ -222,7 +196,7 @@ static int reg_fixed_voltage_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, drvdata);
dev_dbg(&pdev->dev, "%s supplying %duV\n", drvdata->desc.name,
- drvdata->microvolts);
+ drvdata->desc.fixed_uV);
return 0;
diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
index 779b877e0fa1..c8b492c6b6a8 100644
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -209,6 +209,7 @@ enum regulator_type {
* @min_uV: Voltage given by the lowest selector (if linear mapping)
* @uV_step: Voltage increase with each selector (if linear mapping)
* @linear_min_sel: Minimal selector for starting linear mapping
+ * @fixed_uV: Fixed voltage of rails.
* @ramp_delay: Time to settle down after voltage change (unit: uV/us)
* @volt_table: Voltage mapping table (if table based mapping)
*
@@ -241,6 +242,7 @@ struct regulator_desc {
unsigned int min_uV;
unsigned int uV_step;
unsigned int linear_min_sel;
+ int fixed_uV;
unsigned int ramp_delay;
const struct regulator_linear_range *linear_ranges;