.\"
.\" This file and its contents are supplied under the terms of the
.\" Common Development and Distribution License ("CDDL"), version 1.0.
.\" You may only use this file in accordance with the terms of version
.\" 1.0 of the CDDL.
.\"
.\" A full copy of the text of the CDDL should have accompanied this
.\" source.  A copy of the CDDL is also available via the Internet at
.\" http://www.illumos.org/license/CDDL.
.\"
.\"
.\" Copyright 2016 Joyent, Inc.
.\"
.Dd Sep 16, 2016
.Dt USBA_HCDI_DEV_OPS 9F
.Os
.Sh NAME
.Nm usba_hubdi_bus_ops ,
.Nm usba_hubdi_root_hub_power
.Nd device operations utility functions for HCD drivers
.Sh SYNOPSIS
.Ft int
.Fo usba_hubdi_root_hub_power
.Fa "dev_info_t *dip"
.Fa "int component"
.Fa "int level"
.Fc
.Sh INTERFACE LEVEL
.Sy Volatile -
illumos USB HCD private function
.Pp
This is a private function that is not part of the stable DDI.
It may be removed or changed at any time.
.Sh PARAMETERS
For the parameters of the
.Fn usba_hubdi_root_hub_power
function, see
.Xr power 9E .
.Sh DESCRIPTION
The
.Fn usba_hubdi_root_hub_power
function is a utility function for the implementation of USB HCD
drivers.
USB HCD drivers that support power management, should use set the
.Sy devo_power
member of their
.Xr dev_ops 9S
structure to the
.Fn usba_hubdi_root_hub_power
function.
They should not implement their own
.Xr power 9E
function.
.Pp
In addition, drivers should pass the symbol
.Sy usba_hubdi_busops
as the
.Sy devo_bus_ops
member.
It contains a properly formatted bus operations structure.
.Sh CONTEXT
This function should not be called directly, it should only be used as a
member of a device's
.Xr dev_ops 9S
structure.
.Sh SEE ALSO
.Xr power 9E ,
.Xr dev_ops 9S