int num_supplies;
struct regulator_bulk_data *supplies;
+
+ struct kobject *kobj;
+ struct notifier_block nb;
+ unsigned long events;
};
static ssize_t name_show(struct device *dev,
return count;
}
+static DEFINE_MUTEX(events_lock);
+
+static ssize_t events_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct userspace_consumer_data *data = dev_get_drvdata(dev);
+ unsigned long e;
+
+ mutex_lock(&events_lock);
+ e = data->events;
+ data->events = 0;
+ mutex_unlock(&events_lock);
+
+ return sprintf(buf, "0x%lx\n", e);
+}
+
static DEVICE_ATTR_RO(name);
static DEVICE_ATTR_RW(state);
+static DEVICE_ATTR_RO(events);
static struct attribute *attributes[] = {
&dev_attr_name.attr,
&dev_attr_state.attr,
+ &dev_attr_events.attr,
NULL,
};
.is_visible = attr_visible,
};
+static int regulator_userspace_notify(struct notifier_block *nb,
+ unsigned long event,
+ void *ignored)
+{
+ struct userspace_consumer_data *data =
+ container_of(nb, struct userspace_consumer_data, nb);
+
+ mutex_lock(&events_lock);
+ data->events |= event;
+ mutex_unlock(&events_lock);
+
+ sysfs_notify(data->kobj, NULL, dev_attr_events.attr.name);
+
+ return NOTIFY_OK;
+}
+
static int regulator_userspace_consumer_probe(struct platform_device *pdev)
{
struct regulator_userspace_consumer_data tmpdata;
struct regulator_userspace_consumer_data *pdata;
struct userspace_consumer_data *drvdata;
- int ret;
+ int i, ret;
pdata = dev_get_platdata(&pdev->dev);
if (!pdata) {
drvdata->num_supplies = pdata->num_supplies;
drvdata->supplies = pdata->supplies;
drvdata->no_autoswitch = pdata->no_autoswitch;
+ drvdata->kobj = &pdev->dev.kobj;
mutex_init(&drvdata->lock);
}
drvdata->enabled = !!ret;
+ drvdata->nb.notifier_call = regulator_userspace_notify;
+ for (i = 0; i < drvdata->num_supplies; i++) {
+ ret = devm_regulator_register_notifier(drvdata->supplies[i].consumer, &drvdata->nb);
+ if (ret)
+ goto err_enable;
+ }
+
return 0;
err_enable:
static int regulator_userspace_consumer_remove(struct platform_device *pdev)
{
struct userspace_consumer_data *data = platform_get_drvdata(pdev);
+ int i;
+
+ for (i = 0; i < data->num_supplies; i++)
+ devm_regulator_unregister_notifier(data->supplies[i].consumer, &data->nb);
sysfs_remove_group(&pdev->dev.kobj, &attr_group);