regulator 即校准器或者调节器 对应结构体为校准器或者调节器描述符 /*  * struct regulator  *  * One for each consumer device.  */ struct regulator {  struct device *dev;  struct list_head list;  unsigned int always_on:1;  unsigned int bypass:1;  int uA_load;  int min_uV;  int max_uV;  char *supply_name;  struct device_attribute dev_attr;  struct regulator_dev *rdev;  struct dentry *debugfs; };