详解linux电源管理驱动编写

static const struct regulator_ops stm32_vrefbuf_volt_ops = { 
  .enable   = stm32_vrefbuf_enable, 
  .disable  = stm32_vrefbuf_disable, 
  .is_enabled = stm32_vrefbuf_is_enabled, 
  .get_voltage_sel = stm32_vrefbuf_get_voltage_sel, 
  .set_voltage_sel = stm32_vrefbuf_set_voltage_sel, 
  .list_voltage  = regulator_list_voltage_table, 
}; 
 
static const struct regulator_desc stm32_vrefbuf_regu = { 
  .name = "vref", 
  .supply_name = "vdda", 
  .volt_table = stm32_vrefbuf_voltages, 
  .n_voltages = ARRAY_SIZE(stm32_vrefbuf_voltages), 
  .ops = &stm32_vrefbuf_volt_ops, 
  .type = REGULATOR_VOLTAGE, 
  .owner = THIS_MODULE, 
}; 

7、由代码得知，regulator_ops和regulator_desc才是特有的regulator数据结构，当然也少不了注册函数

rdev = regulator_register(&stm32_vrefbuf_regu, &config); 
if (IS_ERR(rdev)) { 
  ret = PTR_ERR(rdev); 
  dev_err(&pdev->dev, "register failed with error %dn", ret); 
  goto err_clk_dis; 
} 
platform_set_drvdata(pdev, rdev); 

8、进一步确认of_device_id是不是真实存在，可以在arch/arm/boot/dts/stm32h743.dtsi找到对应内容

vrefbuf: regulator@58003C00 { 
  compatible = "st,stm32-vrefbuf"; 
  reg = <0x58003C00 0x8>; 
  clocks = <&rcc VREF_CK>; 
  regulator-min-microvolt = <1500000>; 
  regulator-max-microvolt = <2500000>; 
  status = "disabled"; 
}; 

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持易采站长站。