usb_gadget_vbus_connect

Langue: en

Autres versions - même langue

Version: May 2009 (fedora - 06/07/09)

Section: 9 (Appels noyau Linux)

Sommaire

NAME

usb_gadget_vbus_connect - Notify controller that VBUS is powered

SYNOPSIS

int usb_gadget_vbus_connect(struct usb_gadget * gadget);

ARGUMENTS

gadget

The device which now has VBUS power.

DESCRIPTION

This call is used by a driver for an external transceiver (or GPIO) that detects a VBUS power session starting. Common responses include resuming the controller, activating the D+ (or D-) pullup to let the host detect that a USB device is attached, and starting to draw power (8mA or possibly more, especially after SET_CONFIGURATION).

Returns zero on success, else negative errno.

AUTHOR

David Brownell <dbrownell@users.sourceforge.net>

Author.