---
name: "regulator_get_hardware_vsel_register"
section: "9"
platform: "linux"
package: "linux-manual-4.9"
version: "4.9.228-1"
release: "Debian 9 (Stretch)"
platforms: ["linux"]
url: "https://new.carta.tech/regulator_get_hardware_vsel_register"
---

# regulator\_get\_hardware\_vsel\_register(9)

get the HW voltage selector register

## NAME

regulator\_get\_hardware\_vsel\_register - get the HW voltage selector register

## SYNOPSIS

**int regulator\_get\_hardware\_vsel\_register(struct regulator \*** *regulator***, unsigned \*** *vsel\_reg***, unsigned \*** *vsel\_mask***);**

## ARGUMENTS

*regulator*

regulator source

*vsel\_reg*

voltage selector register, output parameter

*vsel\_mask*

mask for voltage selector bitfield, output parameter

## DESCRIPTION

Returns the hardware register offset and bitmask used for setting the regulator voltage. This might be useful when configuring voltage-scaling hardware or firmware that can make I2C requests behind the kernel's back, for example.

On success, the output parameters *vsel\_reg* and *vsel\_mask* are filled in and 0 is returned, otherwise a negative errno is returned.

## AUTHORS

**Liam Girdwood** \<lrg@slimlogic.co.uk\>

Author.

**Mark Brown** \<broonie@opensource.wolfsonmicro.com\>\
 Wolfson Microelectronics,

Author.

## COPYRIGHT