CONFIG_UCSI: USB Type-C Connector System Software Interface driver

General informations

The Linux kernel configuration item CONFIG_UCSI:

• prompt: USB Type-C Connector System Software Interface driver
• type: tristate
• depends on: CONFIG_ACPI
• defined in drivers/usb/misc/Kconfig
• found in Linux kernels: 4.7–4.12
• modules built: ucsi

Help text

UCSI driver is meant to be used as a convenience tool for desktop and server systems that are not equipped to handle USB in device mode. It will always select USB host role for the USB Type-C ports on systems that provide UCSI interface.

USB Type-C Connector System Software Interface (UCSI) is a specification for an interface that allows the Operating System to control the USB Type-C ports on a system. Things the need controlling include the USB Data Role (host or device), and when USB Power Delivery is supported, the Power Role (source or sink). With USB Type-C connectors, when two dual role capable devices are attached together, the data role is selected randomly. Therefore it is important to give the OS a way to select the role. Otherwise the user would have to unplug and replug in order in order to attempt to swap the data and power roles.

The UCSI specification can be downloaded from: http://www.intel.com/content/www/us/en/io/universal-serial-bus/usb-type-c-ucsi-spec.html

To compile the driver as a module, choose M here: the module will be called ucsi.

Hardware

LKDDb

Raw data from LKDDb:

• lkddb acpi "PNP0CA0" : CONFIG_OF CONFIG_PCI CONFIG_UCSI CONFIG_USB CONFIG_USB_GADGET CONFIG_USB_PHY : drivers/usb/misc/ucsi.c # in 4.12
• lkddb acpi "PNP0CA0" : CONFIG_PCI CONFIG_UCSI CONFIG_USB CONFIG_USB_GADGET CONFIG_USB_PHY : drivers/usb/misc/ucsi.c # in 4.7–4.11
• lkddb module ucsi CONFIG_UCSI : drivers/usb/misc/Kconfig : "USB Type-C Connector System Software Interface driver" # in 4.7–4.12
• lkddb platform "ucsi_acpi" : CONFIG_OF CONFIG_PCI CONFIG_UCSI CONFIG_USB CONFIG_USB_GADGET CONFIG_USB_PHY : drivers/usb/misc/ucsi.c # in 4.12
• lkddb platform "ucsi_acpi" : CONFIG_PCI CONFIG_UCSI CONFIG_USB CONFIG_USB_GADGET CONFIG_USB_PHY : drivers/usb/misc/ucsi.c # in 4.7–4.11

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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