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| author | Badhri Jagan Sridharan <badhri@google.com> | 2017-05-30 12:39:53 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-06-03 18:02:58 +0900 |
| commit | bab3548078237706f53baafe43ae58257225549d (patch) | |
| tree | 4fc0dc90f6eb3393885c0bae536502ca0c29bac1 /Documentation/ABI/testing | |
| parent | 7ee4ce6e933fbb2e5db2c39977b847704589575e (diff) | |
| download | linux-bab3548078237706f53baafe43ae58257225549d.tar.gz linux-bab3548078237706f53baafe43ae58257225549d.tar.bz2 linux-bab3548078237706f53baafe43ae58257225549d.zip | |
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/testing')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-typec | 15 |
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> |