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usb: USB Type-C connector class
The purpose of USB Type-C connector class is to provide unified interface for the user space to get the status and basic information about USB Type-C connectors on a system, control over data role swapping, and when the port supports USB Power Delivery, also control over power role swapping and Alternate Modes. Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-and-Tested-by: Felipe Balbi <felipe.balbi@linux.intel.com> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Heikki Krogerus
Greg Kroah-Hartman
parent
e1fe7b6a7b
commit
fab9288428
276
Documentation/ABI/testing/sysfs-class-typec
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276
Documentation/ABI/testing/sysfs-class-typec
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USB Type-C port devices (eg. /sys/class/typec/port0/)
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What: /sys/class/typec/<port>/data_role
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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The supported USB data roles. This attribute can be used for
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requesting data role swapping on the port. Swapping is supported
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as synchronous operation, so write(2) to the attribute will not
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return until the operation has finished. The attribute is
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notified about role changes so that poll(2) on the attribute
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wakes up. Change on the role will also generate uevent
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KOBJ_CHANGE on the port. The current role is show in brackets,
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for example "[host] device" when DRP port is in host mode.
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Valid values: host, device
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What: /sys/class/typec/<port>/power_role
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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The supported power roles. This attribute can be used to request
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power role swap on the port when the port supports USB Power
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Delivery. Swapping is supported as synchronous operation, so
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write(2) to the attribute will not return until the operation
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has finished. The attribute is notified about role changes so
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that poll(2) on the attribute wakes up. Change on the role will
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also generate uevent KOBJ_CHANGE. The current role is show in
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brackets, for example "[source] sink" when in source mode.
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Valid values: source, sink
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What: /sys/class/typec/<port>/vconn_source
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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Shows is the port VCONN Source. This attribute can be used to
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request VCONN swap to change the VCONN Source during connection
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when both the port and the partner support USB Power Delivery.
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Swapping is supported as synchronous operation, so write(2) to
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the attribute will not return until the operation has finished.
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The attribute is notified about VCONN source changes so that
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poll(2) on the attribute wakes up. Change on VCONN source also
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generates uevent KOBJ_CHANGE.
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Valid values:
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- "no" when the port is not the VCONN Source
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- "yes" when the port is the VCONN Source
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What: /sys/class/typec/<port>/power_operation_mode
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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Shows the current power operational mode the port is in. The
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power operation mode means current level for VBUS. In case USB
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Power Delivery communication is used for negotiating the levels,
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power operation mode should show "usb_power_delivery".
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Valid values:
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- default
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- 1.5A
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- 3.0A
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- usb_power_delivery
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What: /sys/class/typec/<port>/preferred_role
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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The user space can notify the driver about the preferred role.
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It should be handled as enabling of Try.SRC or Try.SNK, as
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defined in USB Type-C specification, in the port drivers. By
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default the preferred role should come from the platform.
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Valid values: source, sink, none (to remove preference)
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What: /sys/class/typec/<port>/supported_accessory_modes
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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Space separated list of accessory modes, defined in the USB
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Type-C specification, the port supports.
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What: /sys/class/typec/<port>/usb_power_delivery_revision
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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Revision number of the supported USB Power Delivery
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specification, or 0 when USB Power Delivery is not supported.
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What: /sys/class/typec/<port>/usb_typec_revision
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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Revision number of the supported USB Type-C specification.
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USB Type-C partner devices (eg. /sys/class/typec/port0-partner/)
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What: /sys/class/typec/<port>-partner/accessory_mode
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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Shows the Accessory Mode name when the partner is an Accessory.
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The Accessory Modes are defined in USB Type-C Specification.
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What: /sys/class/typec/<port>-partner/supports_usb_power_delivery
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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Shows if the partner supports USB Power Delivery communication:
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Valid values: yes, no
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What: /sys/class/typec/<port>-partner>/identity/
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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This directory appears only if the port device driver is capable
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of showing the result of Discover Identity USB power delivery
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command. That will not always be possible even when USB power
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delivery is supported, for example when USB power delivery
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communication for the port is mostly handled in firmware. If the
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directory exists, it will have an attribute file for every VDO
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in Discover Identity command result.
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What: /sys/class/typec/<port>-partner/identity/id_header
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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ID Header VDO part of Discover Identity command result. The
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value will show 0 until Discover Identity command result becomes
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available. The value can be polled.
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What: /sys/class/typec/<port>-partner/identity/cert_stat
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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Cert Stat VDO part of Discover Identity command result. The
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value will show 0 until Discover Identity command result becomes
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available. The value can be polled.
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What: /sys/class/typec/<port>-partner/identity/product
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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Product VDO part of Discover Identity command result. The value
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will show 0 until Discover Identity command result becomes
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available. The value can be polled.
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USB Type-C cable devices (eg. /sys/class/typec/port0-cable/)
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Note: Electronically Marked Cables will have a device also for one cable plug
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(eg. /sys/class/typec/port0-plug0). If the cable is active and has also SOP
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Double Prime controller (USB Power Deliver specification ch. 2.4) it will have
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second device also for the other plug. Both plugs may have alternate modes as
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described in USB Type-C and USB Power Delivery specifications.
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What: /sys/class/typec/<port>-cable/type
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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Shows if the cable is active.
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Valid values: active, passive
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What: /sys/class/typec/<port>-cable/plug_type
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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Shows type of the plug on the cable:
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- type-a - Standard A
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- type-b - Standard B
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- type-c
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- captive
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What: /sys/class/typec/<port>-cable/identity/
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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This directory appears only if the port device driver is capable
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of showing the result of Discover Identity USB power delivery
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command. That will not always be possible even when USB power
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delivery is supported. If the directory exists, it will have an
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attribute for every VDO returned by Discover Identity command.
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What: /sys/class/typec/<port>-cable/identity/id_header
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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ID Header VDO part of Discover Identity command result. The
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value will show 0 until Discover Identity command result becomes
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available. The value can be polled.
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What: /sys/class/typec/<port>-cable/identity/cert_stat
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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Cert Stat VDO part of Discover Identity command result. The
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value will show 0 until Discover Identity command result becomes
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available. The value can be polled.
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What: /sys/class/typec/<port>-cable/identity/product
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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Product VDO part of Discover Identity command result. The value
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will show 0 until Discover Identity command result becomes
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available. The value can be polled.
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Alternate Mode devices.
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The alternate modes will have Standard or Vendor ID (SVID) assigned by USB-IF.
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The ports, partners and cable plugs can have alternate modes. A supported SVID
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will consist of a set of modes. Every SVID a port/partner/plug supports will
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have a device created for it, and every supported mode for a supported SVID will
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have its own directory under that device. Below <dev> refers to the device for
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the alternate mode.
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What: /sys/class/typec/<port|partner|cable>/<dev>/svid
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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The SVID (Standard or Vendor ID) assigned by USB-IF for this
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alternate mode.
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What: /sys/class/typec/<port|partner|cable>/<dev>/mode<index>/
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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Every supported mode will have its own directory. The name of
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a mode will be "mode<index>" (for example mode1), where <index>
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is the actual index to the mode VDO returned by Discover Modes
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USB power delivery command.
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What: /sys/class/typec/<port|partner|cable>/<dev>/mode<index>/description
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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Shows description of the mode. The description is optional for
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the drivers, just like with the Billboard Devices.
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What: /sys/class/typec/<port|partner|cable>/<dev>/mode<index>/vdo
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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Shows the VDO in hexadecimal returned by Discover Modes command
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for this mode.
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What: /sys/class/typec/<port|partner|cable>/<dev>/mode<index>/active
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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Shows if the mode is active or not. The attribute can be used
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for entering/exiting the mode with partners and cable plugs, and
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with the port alternate modes it can be used for disabling
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support for specific alternate modes. Entering/exiting modes is
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supported as synchronous operation so write(2) to the attribute
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does not return until the enter/exit mode operation has
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finished. The attribute is notified when the mode is
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entered/exited so poll(2) on the attribute wakes up.
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Entering/exiting a mode will also generate uevent KOBJ_CHANGE.
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Valid values: yes, no
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What: /sys/class/typec/<port>/<dev>/mode<index>/supported_roles
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Date: April 2017
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Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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Description:
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Space separated list of the supported roles.
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This attribute is available for the devices describing the
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alternate modes a port supports, and it will not be exposed with
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the devices presenting the alternate modes the partners or cable
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plugs support.
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Valid values: source, sink
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184
Documentation/usb/typec.rst
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184
Documentation/usb/typec.rst
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@ -0,0 +1,184 @@
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USB Type-C connector class
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==========================
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Introduction
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------------
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The typec class is meant for describing the USB Type-C ports in a system to the
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user space in unified fashion. The class is designed to provide nothing else
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except the user space interface implementation in hope that it can be utilized
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on as many platforms as possible.
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The platforms are expected to register every USB Type-C port they have with the
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class. In a normal case the registration will be done by a USB Type-C or PD PHY
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driver, but it may be a driver for firmware interface such as UCSI, driver for
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USB PD controller or even driver for Thunderbolt3 controller. This document
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considers the component registering the USB Type-C ports with the class as "port
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driver".
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On top of showing the capabilities, the class also offer user space control over
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the roles and alternate modes of ports, partners and cable plugs when the port
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driver is capable of supporting those features.
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The class provides an API for the port drivers described in this document. The
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attributes are described in Documentation/ABI/testing/sysfs-class-typec.
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User space interface
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--------------------
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Every port will be presented as its own device under /sys/class/typec/. The
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first port will be named "port0", the second "port1" and so on.
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When connected, the partner will be presented also as its own device under
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/sys/class/typec/. The parent of the partner device will always be the port it
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is attached to. The partner attached to port "port0" will be named
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"port0-partner". Full path to the device would be
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/sys/class/typec/port0/port0-partner/.
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The cable and the two plugs on it may also be optionally presented as their own
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devices under /sys/class/typec/. The cable attached to the port "port0" port
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will be named port0-cable and the plug on the SOP Prime end (see USB Power
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Delivery Specification ch. 2.4) will be named "port0-plug0" and on the SOP
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Double Prime end "port0-plug1". The parent of a cable will always be the port,
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and the parent of the cable plugs will always be the cable.
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If the port, partner or cable plug supports Alternate Modes, every supported
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Alternate Mode SVID will have their own device describing them. Note that the
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Alternate Mode devices will not be attached to the typec class. The parent of an
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alternate mode will be the device that supports it, so for example an alternate
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mode of port0-partner will be presented under /sys/class/typec/port0-partner/.
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Every mode that is supported will have its own group under the Alternate Mode
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device named "mode<index>", for example /sys/class/typec/port0/<alternate
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mode>/mode1/. The requests for entering/exiting a mode can be done with "active"
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attribute file in that group.
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Driver API
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----------
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Registering the ports
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~~~~~~~~~~~~~~~~~~~~~
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The port drivers will describe every Type-C port they control with struct
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typec_capability data structure, and register them with the following API:
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.. kernel-doc:: drivers/usb/typec/typec.c
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:functions: typec_register_port typec_unregister_port
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When registering the ports, the prefer_role member in struct typec_capability
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deserves special notice. If the port that is being registered does not have
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initial role preference, which means the port does not execute Try.SNK or
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Try.SRC by default, the member must have value TYPEC_NO_PREFERRED_ROLE.
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Otherwise if the port executes Try.SNK by default, the member must have value
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TYPEC_DEVICE, and with Try.SRC the value must be TYPEC_HOST.
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Registering Partners
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~~~~~~~~~~~~~~~~~~~~
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After successful connection of a partner, the port driver needs to register the
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partner with the class. Details about the partner need to be described in struct
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typec_partner_desc. The class copies the details of the partner during
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registration. The class offers the following API for registering/unregistering
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partners.
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.. kernel-doc:: drivers/usb/typec/typec.c
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:functions: typec_register_partner typec_unregister_partner
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The class will provide a handle to struct typec_partner if the registration was
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successful, or NULL.
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If the partner is USB Power Delivery capable, and the port driver is able to
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show the result of Discover Identity command, the partner descriptor structure
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should include handle to struct usb_pd_identity instance. The class will then
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create a sysfs directory for the identity under the partner device. The result
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of Discover Identity command can then be reported with the following API:
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.. kernel-doc:: drivers/usb/typec/typec.c
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:functions: typec_partner_set_identity
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Registering Cables
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~~~~~~~~~~~~~~~~~~
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After successful connection of a cable that supports USB Power Delivery
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Structured VDM "Discover Identity", the port driver needs to register the cable
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and one or two plugs, depending if there is CC Double Prime controller present
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in the cable or not. So a cable capable of SOP Prime communication, but not SOP
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Double Prime communication, should only have one plug registered. For more
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information about SOP communication, please read chapter about it from the
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latest USB Power Delivery specification.
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The plugs are represented as their own devices. The cable is registered first,
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followed by registration of the cable plugs. The cable will be the parent device
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for the plugs. Details about the cable need to be described in struct
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typec_cable_desc and about a plug in struct typec_plug_desc. The class copies
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the details during registration. The class offers the following API for
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registering/unregistering cables and their plugs:
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.. kernel-doc:: drivers/usb/typec/typec.c
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:functions: typec_register_cable typec_unregister_cable typec_register_plug
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typec_unregister_plug
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The class will provide a handle to struct typec_cable and struct typec_plug if
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the registration is successful, or NULL if it isn't.
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If the cable is USB Power Delivery capable, and the port driver is able to show
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the result of Discover Identity command, the cable descriptor structure should
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include handle to struct usb_pd_identity instance. The class will then create a
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sysfs directory for the identity under the cable device. The result of Discover
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Identity command can then be reported with the following API:
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.. kernel-doc:: drivers/usb/typec/typec.c
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:functions: typec_cable_set_identity
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Notifications
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~~~~~~~~~~~~~
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||||
|
||||
When the partner has executed a role change, or when the default roles change
|
||||
during connection of a partner or cable, the port driver must use the following
|
||||
APIs to report it to the class:
|
||||
|
||||
.. kernel-doc:: drivers/usb/typec/typec.c
|
||||
:functions: typec_set_data_role typec_set_pwr_role typec_set_vconn_role
|
||||
typec_set_pwr_opmode
|
||||
|
||||
Alternate Modes
|
||||
~~~~~~~~~~~~~~~
|
||||
|
||||
USB Type-C ports, partners and cable plugs may support Alternate Modes. Each
|
||||
Alternate Mode will have identifier called SVID, which is either a Standard ID
|
||||
given by USB-IF or vendor ID, and each supported SVID can have 1 - 6 modes. The
|
||||
class provides struct typec_mode_desc for describing individual mode of a SVID,
|
||||
and struct typec_altmode_desc which is a container for all the supported modes.
|
||||
|
||||
Ports that support Alternate Modes need to register each SVID they support with
|
||||
the following API:
|
||||
|
||||
.. kernel-doc:: drivers/usb/typec/typec.c
|
||||
:functions: typec_port_register_altmode
|
||||
|
||||
If a partner or cable plug provides a list of SVIDs as response to USB Power
|
||||
Delivery Structured VDM Discover SVIDs message, each SVID needs to be
|
||||
registered.
|
||||
|
||||
API for the partners:
|
||||
|
||||
.. kernel-doc:: drivers/usb/typec/typec.c
|
||||
:functions: typec_partner_register_altmode
|
||||
|
||||
API for the Cable Plugs:
|
||||
|
||||
.. kernel-doc:: drivers/usb/typec/typec.c
|
||||
:functions: typec_plug_register_altmode
|
||||
|
||||
So ports, partners and cable plugs will register the alternate modes with their
|
||||
own functions, but the registration will always return a handle to struct
|
||||
typec_altmode on success, or NULL. The unregistration will happen with the same
|
||||
function:
|
||||
|
||||
.. kernel-doc:: drivers/usb/typec/typec.c
|
||||
:functions: typec_unregister_altmode
|
||||
|
||||
If a partner or cable plug enters or exits a mode, the port driver needs to
|
||||
notify the class with the following API:
|
||||
|
||||
.. kernel-doc:: drivers/usb/typec/typec.c
|
||||
:functions: typec_altmode_update_active
|
||||
@ -13100,6 +13100,15 @@ F: drivers/usb/
|
||||
F: include/linux/usb.h
|
||||
F: include/linux/usb/
|
||||
|
||||
USB TYPEC SUBSYSTEM
|
||||
M: Heikki Krogerus <heikki.krogerus@linux.intel.com>
|
||||
L: linux-usb@vger.kernel.org
|
||||
S: Maintained
|
||||
F: Documentation/ABI/testing/sysfs-class-typec
|
||||
F: Documentation/usb/typec.rst
|
||||
F: drivers/usb/typec/
|
||||
F: include/linux/usb/typec.h
|
||||
|
||||
USB UHCI DRIVER
|
||||
M: Alan Stern <stern@rowland.harvard.edu>
|
||||
L: linux-usb@vger.kernel.org
|
||||
|
||||
@ -162,6 +162,8 @@ source "drivers/usb/phy/Kconfig"
|
||||
|
||||
source "drivers/usb/gadget/Kconfig"
|
||||
|
||||
source "drivers/usb/typec/Kconfig"
|
||||
|
||||
config USB_LED_TRIG
|
||||
bool "USB LED Triggers"
|
||||
depends on LEDS_CLASS && LEDS_TRIGGERS
|
||||
|
||||
@ -62,3 +62,5 @@ obj-$(CONFIG_USB_GADGET) += gadget/
|
||||
obj-$(CONFIG_USB_COMMON) += common/
|
||||
|
||||
obj-$(CONFIG_USBIP_CORE) += usbip/
|
||||
|
||||
obj-$(CONFIG_TYPEC) += typec/
|
||||
|
||||
7
drivers/usb/typec/Kconfig
Normal file
7
drivers/usb/typec/Kconfig
Normal file
@ -0,0 +1,7 @@
|
||||
|
||||
menu "USB Power Delivery and Type-C drivers"
|
||||
|
||||
config TYPEC
|
||||
tristate
|
||||
|
||||
endmenu
|
||||
1
drivers/usb/typec/Makefile
Normal file
1
drivers/usb/typec/Makefile
Normal file
@ -0,0 +1 @@
|
||||
obj-$(CONFIG_TYPEC) += typec.o
|
||||
1262
drivers/usb/typec/typec.c
Normal file
1262
drivers/usb/typec/typec.c
Normal file
File diff suppressed because it is too large
Load Diff
243
include/linux/usb/typec.h
Normal file
243
include/linux/usb/typec.h
Normal file
@ -0,0 +1,243 @@
|
||||
|
||||
#ifndef __LINUX_USB_TYPEC_H
|
||||
#define __LINUX_USB_TYPEC_H
|
||||
|
||||
#include <linux/types.h>
|
||||
|
||||
/* XXX: Once we have a header for USB Power Delivery, this belongs there */
|
||||
#define ALTMODE_MAX_MODES 6
|
||||
|
||||
/* USB Type-C Specification releases */
|
||||
#define USB_TYPEC_REV_1_0 0x100 /* 1.0 */
|
||||
#define USB_TYPEC_REV_1_1 0x110 /* 1.1 */
|
||||
#define USB_TYPEC_REV_1_2 0x120 /* 1.2 */
|
||||
|
||||
struct typec_altmode;
|
||||
struct typec_partner;
|
||||
struct typec_cable;
|
||||
struct typec_plug;
|
||||
struct typec_port;
|
||||
|
||||
struct fwnode_handle;
|
||||
|
||||
enum typec_port_type {
|
||||
TYPEC_PORT_DFP,
|
||||
TYPEC_PORT_UFP,
|
||||
TYPEC_PORT_DRP,
|
||||
};
|
||||
|
||||
enum typec_plug_type {
|
||||
USB_PLUG_NONE,
|
||||
USB_PLUG_TYPE_A,
|
||||
USB_PLUG_TYPE_B,
|
||||
USB_PLUG_TYPE_C,
|
||||
USB_PLUG_CAPTIVE,
|
||||
};
|
||||
|
||||
enum typec_data_role {
|
||||
TYPEC_DEVICE,
|
||||
TYPEC_HOST,
|
||||
};
|
||||
|
||||
enum typec_role {
|
||||
TYPEC_SINK,
|
||||
TYPEC_SOURCE,
|
||||
};
|
||||
|
||||
enum typec_pwr_opmode {
|
||||
TYPEC_PWR_MODE_USB,
|
||||
TYPEC_PWR_MODE_1_5A,
|
||||
TYPEC_PWR_MODE_3_0A,
|
||||
TYPEC_PWR_MODE_PD,
|
||||
};
|
||||
|
||||
enum typec_accessory {
|
||||
TYPEC_ACCESSORY_NONE,
|
||||
TYPEC_ACCESSORY_AUDIO,
|
||||
TYPEC_ACCESSORY_DEBUG,
|
||||
};
|
||||
|
||||
#define TYPEC_MAX_ACCESSORY 3
|
||||
|
||||
/*
|
||||
* struct usb_pd_identity - USB Power Delivery identity data
|
||||
* @id_header: ID Header VDO
|
||||
* @cert_stat: Cert Stat VDO
|
||||
* @product: Product VDO
|
||||
*
|
||||
* USB power delivery Discover Identity command response data.
|
||||
*
|
||||
* REVISIT: This is USB Power Delivery specific information, so this structure
|
||||
* probable belongs to USB Power Delivery header file once we have them.
|
||||
*/
|
||||
struct usb_pd_identity {
|
||||
u32 id_header;
|
||||
u32 cert_stat;
|
||||
u32 product;
|
||||
};
|
||||
|
||||
int typec_partner_set_identity(struct typec_partner *partner);
|
||||
int typec_cable_set_identity(struct typec_cable *cable);
|
||||
|
||||
/*
|
||||
* struct typec_mode_desc - Individual Mode of an Alternate Mode
|
||||
* @index: Index of the Mode within the SVID
|
||||
* @vdo: VDO returned by Discover Modes USB PD command
|
||||
* @desc: Optional human readable description of the mode
|
||||
* @roles: Only for ports. DRP if the mode is available in both roles
|
||||
*
|
||||
* Description of a mode of an Alternate Mode which a connector, cable plug or
|
||||
* partner supports. Every mode will have it's own sysfs group. The details are
|
||||
* the VDO returned by discover modes command, description for the mode and
|
||||
* active flag telling has the mode being entered or not.
|
||||
*/
|
||||
struct typec_mode_desc {
|
||||
int index;
|
||||
u32 vdo;
|
||||
char *desc;
|
||||
/* Only used with ports */
|
||||
enum typec_port_type roles;
|
||||
};
|
||||
|
||||
/*
|
||||
* struct typec_altmode_desc - USB Type-C Alternate Mode Descriptor
|
||||
* @svid: Standard or Vendor ID
|
||||
* @n_modes: Number of modes
|
||||
* @modes: Array of modes supported by the Alternate Mode
|
||||
*
|
||||
* Representation of an Alternate Mode that has SVID assigned by USB-IF. The
|
||||
* array of modes will list the modes of a particular SVID that are supported by
|
||||
* a connector, partner of a cable plug.
|
||||
*/
|
||||
struct typec_altmode_desc {
|
||||
u16 svid;
|
||||
int n_modes;
|
||||
struct typec_mode_desc modes[ALTMODE_MAX_MODES];
|
||||
};
|
||||
|
||||
struct typec_altmode
|
||||
*typec_partner_register_altmode(struct typec_partner *partner,
|
||||
struct typec_altmode_desc *desc);
|
||||
struct typec_altmode
|
||||
*typec_plug_register_altmode(struct typec_plug *plug,
|
||||
struct typec_altmode_desc *desc);
|
||||
struct typec_altmode
|
||||
*typec_port_register_altmode(struct typec_port *port,
|
||||
struct typec_altmode_desc *desc);
|
||||
void typec_unregister_altmode(struct typec_altmode *altmode);
|
||||
|
||||
struct typec_port *typec_altmode2port(struct typec_altmode *alt);
|
||||
|
||||
void typec_altmode_update_active(struct typec_altmode *alt, int mode,
|
||||
bool active);
|
||||
|
||||
enum typec_plug_index {
|
||||
TYPEC_PLUG_SOP_P,
|
||||
TYPEC_PLUG_SOP_PP,
|
||||
};
|
||||
|
||||
/*
|
||||
* struct typec_plug_desc - USB Type-C Cable Plug Descriptor
|
||||
* @index: SOP Prime for the plug connected to DFP and SOP Double Prime for the
|
||||
* plug connected to UFP
|
||||
*
|
||||
* Represents USB Type-C Cable Plug.
|
||||
*/
|
||||
struct typec_plug_desc {
|
||||
enum typec_plug_index index;
|
||||
};
|
||||
|
||||
/*
|
||||
* struct typec_cable_desc - USB Type-C Cable Descriptor
|
||||
* @type: The plug type from USB PD Cable VDO
|
||||
* @active: Is the cable active or passive
|
||||
* @identity: Result of Discover Identity command
|
||||
*
|
||||
* Represents USB Type-C Cable attached to USB Type-C port.
|
||||
*/
|
||||
struct typec_cable_desc {
|
||||
enum typec_plug_type type;
|
||||
unsigned int active:1;
|
||||
struct usb_pd_identity *identity;
|
||||
};
|
||||
|
||||
/*
|
||||
* struct typec_partner_desc - USB Type-C Partner Descriptor
|
||||
* @usb_pd: USB Power Delivery support
|
||||
* @accessory: Audio, Debug or none.
|
||||
* @identity: Discover Identity command data
|
||||
*
|
||||
* Details about a partner that is attached to USB Type-C port. If @identity
|
||||
* member exists when partner is registered, a directory named "identity" is
|
||||
* created to sysfs for the partner device.
|
||||
*/
|
||||
struct typec_partner_desc {
|
||||
unsigned int usb_pd:1;
|
||||
enum typec_accessory accessory;
|
||||
struct usb_pd_identity *identity;
|
||||
};
|
||||
|
||||
/*
|
||||
* struct typec_capability - USB Type-C Port Capabilities
|
||||
* @role: DFP (Host-only), UFP (Device-only) or DRP (Dual Role)
|
||||
* @revision: USB Type-C Specification release. Binary coded decimal
|
||||
* @pd_revision: USB Power Delivery Specification revision if supported
|
||||
* @prefer_role: Initial role preference
|
||||
* @accessory: Supported Accessory Modes
|
||||
* @fwnode: Optional fwnode of the port
|
||||
* @try_role: Set data role preference for DRP port
|
||||
* @dr_set: Set Data Role
|
||||
* @pr_set: Set Power Role
|
||||
* @vconn_set: Set VCONN Role
|
||||
* @activate_mode: Enter/exit given Alternate Mode
|
||||
*
|
||||
* Static capabilities of a single USB Type-C port.
|
||||
*/
|
||||
struct typec_capability {
|
||||
enum typec_port_type type;
|
||||
u16 revision; /* 0120H = "1.2" */
|
||||
u16 pd_revision; /* 0300H = "3.0" */
|
||||
int prefer_role;
|
||||
enum typec_accessory accessory[TYPEC_MAX_ACCESSORY];
|
||||
|
||||
struct fwnode_handle *fwnode;
|
||||
|
||||
int (*try_role)(const struct typec_capability *,
|
||||
int role);
|
||||
|
||||
int (*dr_set)(const struct typec_capability *,
|
||||
enum typec_data_role);
|
||||
int (*pr_set)(const struct typec_capability *,
|
||||
enum typec_role);
|
||||
int (*vconn_set)(const struct typec_capability *,
|
||||
enum typec_role);
|
||||
|
||||
int (*activate_mode)(const struct typec_capability *,
|
||||
int mode, int activate);
|
||||
};
|
||||
|
||||
/* Specific to try_role(). Indicates the user want's to clear the preference. */
|
||||
#define TYPEC_NO_PREFERRED_ROLE (-1)
|
||||
|
||||
struct typec_port *typec_register_port(struct device *parent,
|
||||
const struct typec_capability *cap);
|
||||
void typec_unregister_port(struct typec_port *port);
|
||||
|
||||
struct typec_partner *typec_register_partner(struct typec_port *port,
|
||||
struct typec_partner_desc *desc);
|
||||
void typec_unregister_partner(struct typec_partner *partner);
|
||||
|
||||
struct typec_cable *typec_register_cable(struct typec_port *port,
|
||||
struct typec_cable_desc *desc);
|
||||
void typec_unregister_cable(struct typec_cable *cable);
|
||||
|
||||
struct typec_plug *typec_register_plug(struct typec_cable *cable,
|
||||
struct typec_plug_desc *desc);
|
||||
void typec_unregister_plug(struct typec_plug *plug);
|
||||
|
||||
void typec_set_data_role(struct typec_port *port, enum typec_data_role role);
|
||||
void typec_set_pwr_role(struct typec_port *port, enum typec_role role);
|
||||
void typec_set_vconn_role(struct typec_port *port, enum typec_role role);
|
||||
void typec_set_pwr_opmode(struct typec_port *port, enum typec_pwr_opmode mode);
|
||||
|
||||
#endif /* __LINUX_USB_TYPEC_H */
|
||||
Loading…
Reference in New Issue
Block a user