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authorBadhri Jagan Sridharan <badhri@google.com>2017-05-30 12:39:53 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-06-03 18:02:58 +0900
commitbab3548078237706f53baafe43ae58257225549d (patch)
tree4fc0dc90f6eb3393885c0bae536502ca0c29bac1 /Documentation/ABI
parent7ee4ce6e933fbb2e5db2c39977b847704589575e (diff)
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usb: typec: Add a sysfs node to manage port type
User space applications in some cases have the need to enforce a specific port type(DFP/UFP/DRP). This change allows userspace to attempt setting the desired port type. Low level drivers can however reject the request if the specific port type is not supported. Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/ABI')
-rw-r--r--Documentation/ABI/testing/sysfs-class-typec15
1 files changed, 15 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-typec b/Documentation/ABI/testing/sysfs-class-typec
index d4a3d23eb09c..5be552e255e9 100644
--- a/Documentation/ABI/testing/sysfs-class-typec
+++ b/Documentation/ABI/testing/sysfs-class-typec
@@ -30,6 +30,21 @@ Description:
Valid values: source, sink
+What: /sys/class/typec/<port>/port_type
+Date: May 2017
+Contact: Badhri Jagan Sridharan <Badhri@google.com>
+Description:
+ Indicates the type of the port. This attribute can be used for
+ requesting a change in the port type. Port type change is
+ supported as a synchronous operation, so write(2) to the
+ attribute will not return until the operation has finished.
+
+ Valid values:
+ - source (The port will behave as source only DFP port)
+ - sink (The port will behave as sink only UFP port)
+ - dual (The port will behave as dual-role-data and
+ dual-role-power port)
+
What: /sys/class/typec/<port>/vconn_source
Date: April 2017
Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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