Documentation/ABI/obsolete/sysfs-class-typec

Source file repositories/reference/linux-study-clean/Documentation/ABI/obsolete/sysfs-class-typec

File Facts

System
Linux kernel
Corpus path
Documentation/ABI/obsolete/sysfs-class-typec
Extension
[no extension]
Size
2023 bytes
Lines
49
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: Documentation
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

These files are deprecated and will be removed. The same files are available
under /sys/bus/typec (see Documentation/ABI/testing/sysfs-bus-typec).

What:		/sys/class/typec/<port|partner|cable>/<dev>/svid
Date:		April 2017
Contact:	Heikki Krogerus <heikki.krogerus@linux.intel.com>
Description:
		The SVID (Standard or Vendor ID) assigned by USB-IF for this
		alternate mode.

What:		/sys/class/typec/<port|partner|cable>/<dev>/mode<index>/
Date:		April 2017
Contact:	Heikki Krogerus <heikki.krogerus@linux.intel.com>
Description:
		Every supported mode will have its own directory. The name of
		a mode will be "mode<index>" (for example mode1), where <index>
		is the actual index to the mode VDO returned by Discover Modes
		USB power delivery command.

What:		/sys/class/typec/<port|partner|cable>/<dev>/mode<index>/description
Date:		April 2017
Contact:	Heikki Krogerus <heikki.krogerus@linux.intel.com>
Description:
		Shows description of the mode. The description is optional for
		the drivers, just like with the Billboard Devices.

What:		/sys/class/typec/<port|partner|cable>/<dev>/mode<index>/vdo
Date:		April 2017
Contact:	Heikki Krogerus <heikki.krogerus@linux.intel.com>
Description:
		Shows the VDO in hexadecimal returned by Discover Modes command
		for this mode.

What:		/sys/class/typec/<port|partner|cable>/<dev>/mode<index>/active
Date:		April 2017
Contact:	Heikki Krogerus <heikki.krogerus@linux.intel.com>
Description:
		Shows if the mode is active or not. The attribute can be used
		for entering/exiting the mode with partners and cable plugs, and
		with the port alternate modes it can be used for disabling
		support for specific alternate modes. Entering/exiting modes is
		supported as synchronous operation so write(2) to the attribute
		does not return until the enter/exit mode operation has
		finished. The attribute is notified when the mode is
		entered/exited so poll(2) on the attribute wakes up.
		Entering/exiting a mode will also generate uevent KOBJ_CHANGE.

		Valid values: yes, no

Annotation

Implementation Notes