| 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¶
| May 2024 | Kernel Hackers Manual 2.6. |