一点点读懂regulator（二）

目录

1、Registration

2、Regulator Events

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本章我们介绍Regulator Driver Interface相关接口使用。The regulator driver interface相对简单，旨在允许Regulator Driver向核心框架注册其服务。代码实现在regulator/core.c中

1、Registration

驱动程序可以通过调用以下接口注册调节器：

struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc,

                                         const struct regulator_config *config);

This will register the regulator’s capabilities and operations to the regulator core.

Regulators可以通过调用以下接口来unregister：

void regulator_unregister(struct regulator_dev *rdev);

​​​​​​​2、Regulator Events

Regulators可以通过调用以下接口向consumer drivers发送事件（例如过热、欠压等）：

int regulator_notifier_call_chain(struct regulator_dev *rdev,

                                  unsigned long event, void *data);

要想被regulator_notifier_call_chain调用到，则需要相关模块来注册notifier_call_chain才行。core.c同样提供了注册和去注册接口

int regulator_register_notifier(struct regulator *regulator,
                  struct notifier_block *nb)

int regulator_unregister_notifier(struct regulator *regulator,
                struct notifier_block *nb)