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path: root/drivers/regulator/virtual.c
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Diffstat (limited to 'drivers/regulator/virtual.c')
-rw-r--r--drivers/regulator/virtual.c114
1 files changed, 49 insertions, 65 deletions
diff --git a/drivers/regulator/virtual.c b/drivers/regulator/virtual.c
index addc032c84b..6ff95b04598 100644
--- a/drivers/regulator/virtual.c
+++ b/drivers/regulator/virtual.c
@@ -15,11 +15,13 @@
#include <linux/mutex.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+#include <linux/module.h>
struct virtual_consumer_data {
struct mutex lock;
struct regulator *regulator;
- int enabled;
+ bool enabled;
int min_uV;
int max_uV;
int min_uA;
@@ -49,7 +51,7 @@ static void update_voltage_constraints(struct device *dev,
dev_dbg(dev, "Enabling regulator\n");
ret = regulator_enable(data->regulator);
if (ret == 0)
- data->enabled = 1;
+ data->enabled = true;
else
dev_err(dev, "regulator_enable() failed: %d\n",
ret);
@@ -59,7 +61,7 @@ static void update_voltage_constraints(struct device *dev,
dev_dbg(dev, "Disabling regulator\n");
ret = regulator_disable(data->regulator);
if (ret == 0)
- data->enabled = 0;
+ data->enabled = false;
else
dev_err(dev, "regulator_disable() failed: %d\n",
ret);
@@ -89,7 +91,7 @@ static void update_current_limit_constraints(struct device *dev,
dev_dbg(dev, "Enabling regulator\n");
ret = regulator_enable(data->regulator);
if (ret == 0)
- data->enabled = 1;
+ data->enabled = true;
else
dev_err(dev, "regulator_enable() failed: %d\n",
ret);
@@ -99,7 +101,7 @@ static void update_current_limit_constraints(struct device *dev,
dev_dbg(dev, "Disabling regulator\n");
ret = regulator_disable(data->regulator);
if (ret == 0)
- data->enabled = 0;
+ data->enabled = false;
else
dev_err(dev, "regulator_disable() failed: %d\n",
ret);
@@ -119,7 +121,7 @@ static ssize_t set_min_uV(struct device *dev, struct device_attribute *attr,
struct virtual_consumer_data *data = dev_get_drvdata(dev);
long val;
- if (strict_strtol(buf, 10, &val) != 0)
+ if (kstrtol(buf, 10, &val) != 0)
return count;
mutex_lock(&data->lock);
@@ -145,7 +147,7 @@ static ssize_t set_max_uV(struct device *dev, struct device_attribute *attr,
struct virtual_consumer_data *data = dev_get_drvdata(dev);
long val;
- if (strict_strtol(buf, 10, &val) != 0)
+ if (kstrtol(buf, 10, &val) != 0)
return count;
mutex_lock(&data->lock);
@@ -171,7 +173,7 @@ static ssize_t set_min_uA(struct device *dev, struct device_attribute *attr,
struct virtual_consumer_data *data = dev_get_drvdata(dev);
long val;
- if (strict_strtol(buf, 10, &val) != 0)
+ if (kstrtol(buf, 10, &val) != 0)
return count;
mutex_lock(&data->lock);
@@ -197,7 +199,7 @@ static ssize_t set_max_uA(struct device *dev, struct device_attribute *attr,
struct virtual_consumer_data *data = dev_get_drvdata(dev);
long val;
- if (strict_strtol(buf, 10, &val) != 0)
+ if (kstrtol(buf, 10, &val) != 0)
return count;
mutex_lock(&data->lock);
@@ -264,48 +266,52 @@ static ssize_t set_mode(struct device *dev, struct device_attribute *attr,
return count;
}
-static DEVICE_ATTR(min_microvolts, 0666, show_min_uV, set_min_uV);
-static DEVICE_ATTR(max_microvolts, 0666, show_max_uV, set_max_uV);
-static DEVICE_ATTR(min_microamps, 0666, show_min_uA, set_min_uA);
-static DEVICE_ATTR(max_microamps, 0666, show_max_uA, set_max_uA);
-static DEVICE_ATTR(mode, 0666, show_mode, set_mode);
-
-static struct device_attribute *attributes[] = {
- &dev_attr_min_microvolts,
- &dev_attr_max_microvolts,
- &dev_attr_min_microamps,
- &dev_attr_max_microamps,
- &dev_attr_mode,
+static DEVICE_ATTR(min_microvolts, 0664, show_min_uV, set_min_uV);
+static DEVICE_ATTR(max_microvolts, 0664, show_max_uV, set_max_uV);
+static DEVICE_ATTR(min_microamps, 0664, show_min_uA, set_min_uA);
+static DEVICE_ATTR(max_microamps, 0664, show_max_uA, set_max_uA);
+static DEVICE_ATTR(mode, 0664, show_mode, set_mode);
+
+static struct attribute *regulator_virtual_attributes[] = {
+ &dev_attr_min_microvolts.attr,
+ &dev_attr_max_microvolts.attr,
+ &dev_attr_min_microamps.attr,
+ &dev_attr_max_microamps.attr,
+ &dev_attr_mode.attr,
+ NULL
};
-static int regulator_virtual_consumer_probe(struct platform_device *pdev)
+static const struct attribute_group regulator_virtual_attr_group = {
+ .attrs = regulator_virtual_attributes,
+};
+
+static int regulator_virtual_probe(struct platform_device *pdev)
{
- char *reg_id = pdev->dev.platform_data;
+ char *reg_id = dev_get_platdata(&pdev->dev);
struct virtual_consumer_data *drvdata;
- int ret, i;
+ int ret;
- drvdata = kzalloc(sizeof(struct virtual_consumer_data), GFP_KERNEL);
- if (drvdata == NULL) {
+ drvdata = devm_kzalloc(&pdev->dev, sizeof(struct virtual_consumer_data),
+ GFP_KERNEL);
+ if (drvdata == NULL)
return -ENOMEM;
- }
mutex_init(&drvdata->lock);
- drvdata->regulator = regulator_get(&pdev->dev, reg_id);
+ drvdata->regulator = devm_regulator_get(&pdev->dev, reg_id);
if (IS_ERR(drvdata->regulator)) {
ret = PTR_ERR(drvdata->regulator);
dev_err(&pdev->dev, "Failed to obtain supply '%s': %d\n",
reg_id, ret);
- goto err;
+ return ret;
}
- for (i = 0; i < ARRAY_SIZE(attributes); i++) {
- ret = device_create_file(&pdev->dev, attributes[i]);
- if (ret != 0) {
- dev_err(&pdev->dev, "Failed to create attr %d: %d\n",
- i, ret);
- goto err_regulator;
- }
+ ret = sysfs_create_group(&pdev->dev.kobj,
+ &regulator_virtual_attr_group);
+ if (ret != 0) {
+ dev_err(&pdev->dev,
+ "Failed to create attribute group: %d\n", ret);
+ return ret;
}
drvdata->mode = regulator_get_mode(drvdata->regulator);
@@ -313,52 +319,30 @@ static int regulator_virtual_consumer_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, drvdata);
return 0;
-
-err_regulator:
- regulator_put(drvdata->regulator);
-err:
- for (i = 0; i < ARRAY_SIZE(attributes); i++)
- device_remove_file(&pdev->dev, attributes[i]);
- kfree(drvdata);
- return ret;
}
-static int regulator_virtual_consumer_remove(struct platform_device *pdev)
+static int regulator_virtual_remove(struct platform_device *pdev)
{
struct virtual_consumer_data *drvdata = platform_get_drvdata(pdev);
- int i;
- for (i = 0; i < ARRAY_SIZE(attributes); i++)
- device_remove_file(&pdev->dev, attributes[i]);
+ sysfs_remove_group(&pdev->dev.kobj, &regulator_virtual_attr_group);
+
if (drvdata->enabled)
regulator_disable(drvdata->regulator);
- regulator_put(drvdata->regulator);
-
- kfree(drvdata);
return 0;
}
static struct platform_driver regulator_virtual_consumer_driver = {
- .probe = regulator_virtual_consumer_probe,
- .remove = regulator_virtual_consumer_remove,
+ .probe = regulator_virtual_probe,
+ .remove = regulator_virtual_remove,
.driver = {
.name = "reg-virt-consumer",
+ .owner = THIS_MODULE,
},
};
-
-static int __init regulator_virtual_consumer_init(void)
-{
- return platform_driver_register(&regulator_virtual_consumer_driver);
-}
-module_init(regulator_virtual_consumer_init);
-
-static void __exit regulator_virtual_consumer_exit(void)
-{
- platform_driver_unregister(&regulator_virtual_consumer_driver);
-}
-module_exit(regulator_virtual_consumer_exit);
+module_platform_driver(regulator_virtual_consumer_driver);
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_DESCRIPTION("Virtual regulator consumer");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 14:22:40 +0000