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USB_BUS_START_ENUM(9) Host Controller APIs USB_BUS_START_ENUM(9)

NAME

usb_bus_start_enum - start immediate enumeration (for OTG)

SYNOPSIS

int usb_bus_start_enum(struct usb_bus * bus, unsigned port_num);

ARGUMENTS

bus
the bus (must use hcd framework)
port_num
1-based number of port; usually bus->otg_port

CONTEXT

 
in_interrupt

DESCRIPTION

Starts enumeration, with an immediate reset followed later by khubd identifying and possibly configuring the device. This is needed by OTG controller drivers, where it helps meet HNP protocol timing requirements for starting a port reset.

COPYRIGHT

March 2016 Kernel Hackers Manual 3.2.