NAME

usbconfig — configure the USB subsystem

SYNOPSIS

DESCRIPTION

The usbconfig utility is used to configure and dump information about the USB subsystem.

The options are as follows:

-a addr

Limit device range to the given USB device index. Should only be used in conjunction with the unit argument.

-d [[/dev/]ugen]unit.addr

Limit device range to USB devices connected to the given unit and address. The unit and address coordinates may be prefixed by the lowercased word ugen, or the full path name /dev/ugen.

-h

Show help and available commands.

-i interface_index

Specify interface index as indicated by the command description. If this argument is not specified a value of zero will be used for the interface index.

-l dump_device_desc

Show numeral only key=value output as one long line.

-u unit

Limit device range to USB devices connected to the given USBUS unit.

-v

Activate the dump_device_desc, dump_curr_config_desc, and show_ifdrv commands (“verbose mode”).

The following commands may be used with usbconfig:

set_config cfg_index

Choose the configuration for the USB device. Valid values range from zero to the number reported as the bNumConfigurations in dump_device_desc output. The special value of 255 unconfigures the device, detaching the interface drivers and reducing the power consumption to minimum, but without going into power saving mode or detaching from the bus. In some cases, it prevents the device from charging.

set_alt alt_index

Choose the alternate interface for the selected interface and USB device. Alternative settings for the current configuration are available as the bAlternateSetting in dump_curr_config_desc output. Usually there is no need to adjust this setting. This command uses the -i interface_index option.

set_template template

Set the global USB device side template. See usb_template(4) for more information.

get_template

Get the current USB device side template.

add_dev_quirk_vplh vid pid lo_rev hi_rev quirk_name

Add a quirk by specifying the Vendor ID, Product ID, low and high revision numbers, and the quirk name. See usb_quirk(4) for more information.

remove_dev_quirk_vplh vid pid lo_rev hi_rev quirk_name

Remove a quirk.

add_quirk quirk_name

Add quirk for the currently selected USB device.

remove_quirk quirk_name

Remove a quirk for the currently selected USB device.

dump_all_desc

Display the device and configuration descriptors.

dump_quirk_names

Display the list of supported quirk names.

dump_device_quirks

Display the list of current device quirks.

dump_device_desc

Display the device descriptor.

dump_curr_config_desc

Display current configuration descriptor.

dump_all_config_desc

Display all the configuration descriptors.

dump_string index

Display string descriptor at selected index.

dump_info

Display summary information about the device.

dump_stats

Display USB transfer statistics.

show_ifdrv

Display the list of interface drivers (such as ukbd(4) or u3g(4)) currently attached to the device.

detach_kernel_driver

Detach kernel driver for the selected interface and USB device. This command uses the -i interface_index option.

suspend

Force the device to suspend.

resume

Force the device to resume.

power_off

Turn the device off.

power_save

Turn the automatic suspend and resume on. This is the default for USB hubs.

power_on

Turn the device on and disable automatic suspend and resume. This is the default for non-hub devices.

reset

Reset the device. This forces the USB stack to reenumerate the bus.

list

List all available USB devices. This is the default if usbconfig is called without specifying a command.

do_request bmReqTyp bReq wVal wIdx wLen data...

Perform a synchronous control request on the specified device. See libusb20_dev_request_sync(3) for more information.

EXAMPLES

List all connected USB devices and their attached interface drivers:

Dump device and configuration descriptors for device on USB bus 1 at address 2:

Dump HID descriptor for device on USB bus 1 at address 2:

Power off the device on USB bus 1 at address 2:

SEE ALSO

usb(4), usb_quirk(4), usb_template(4)