# SPDX-License-Identifier: GPL-2.0
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menuconfig TYPEC
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tristate "USB Type-C Support"
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help
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USB Type-C Specification defines a cable and connector for USB where
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only one type of plug is supported on both ends, i.e. there will not
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be Type-A plug on one end of the cable and Type-B plug on the other.
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Determination of the host-to-device relationship happens through a
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specific Configuration Channel (CC) which goes through the USB Type-C
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cable. The Configuration Channel may also be used to detect optional
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Accessory Modes - Analog Audio and Debug - and if USB Power Delivery
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is supported, the Alternate Modes, where the connector is used for
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something else then USB communication.
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USB Power Delivery Specification defines a protocol that can be used
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to negotiate the voltage and current levels with the connected
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partners. USB Power Delivery allows higher voltages then the normal
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5V, up to 20V, and current up to 5A over the cable. The USB Power
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Delivery protocol is also used to negotiate the optional Alternate
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Modes when they are supported. USB Power Delivery does not depend on
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USB Type-C connector, however it is mostly used together with USB
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Type-C connectors.
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USB Type-C and USB Power Delivery Specifications define a set of state
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machines that need to be implemented in either software or firmware.
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Simple USB Type-C PHYs, for example USB Type-C Port Controller
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Interface Specification compliant "Port Controllers" need the state
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machines to be handled in the OS, but stand-alone USB Type-C and Power
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Delivery controllers handle the state machines inside their firmware.
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The USB Type-C and Power Delivery controllers usually function
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autonomously, and do not necessarily require drivers.
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Enable this configurations option if you have USB Type-C connectors on
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your system and 1) you know your USB Type-C hardware requires OS
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control (a driver) to function, or 2) if you need to be able to read
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the status of the USB Type-C ports in your system, or 3) if you need
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to be able to swap the power role (decide are you supplying or
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consuming power over the cable) or data role (host or device) when
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both roles are supported.
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For more information, see the kernel documentation for USB Type-C
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Connector Class API (Documentation/driver-api/usb/typec.rst)
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<https://www.kernel.org/doc/html/latest/driver-api/usb/typec.html>
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and ABI (Documentation/ABI/testing/sysfs-class-typec).
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if TYPEC
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source "drivers/usb/typec/tcpm/Kconfig"
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source "drivers/usb/typec/ucsi/Kconfig"
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config TYPEC_TPS6598X
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tristate "TI TPS6598x USB Power Delivery controller driver"
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depends on I2C
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select REGMAP_I2C
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help
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Say Y or M here if your system has TI TPS65982 or TPS65983 USB Power
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Delivery controller.
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If you choose to build this driver as a dynamically linked module, the
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module will be called tps6598x.ko.
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source "drivers/usb/typec/mux/Kconfig"
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source "drivers/usb/typec/altmodes/Kconfig"
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endif # TYPEC
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