Linux Device Drivers Development

Description structure

The kernel describes every regulator provided by a PMIC by means of a struct regulator_desc structure, which characterizes a regulator. By regulator, I mean any independent regulated output. For example, the ISL6271A from Intersil is a PMIC with three independent regulated outputs. There should then be three instances of regulator_desc in its driver. This structure, which contains the fixed properties of a regulator, looks like the following:

struct regulator_desc { 
   const char *name; 
   const char *of_match; 
 
   int id; 
   unsigned n_voltages; 
   const struct regulator_ops *ops; 
   int irq; 
   enum regulator_type type; 
   struct module *owner; 
 
   unsigned int min_uV; 
   unsigned int uV_step; 
}; 

Let's omit some fields for the sake of simplicity. ...