diff options
| author | Lan Tianyu <tianyu.lan@intel.com> | 2013-01-20 01:53:32 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-20 16:09:53 -0800 |
| commit | cef7468caff29d3333fba4d0ececd82063ce80d5 (patch) | |
| tree | 5e3a3409f3dc4a37336b2ba05f4893b8f6cb8710 /Documentation/ABI | |
| parent | 9f7344fbaf191de63df315c7e0fa4c976e2ea419 (diff) | |
| download | op-kernel-dev-cef7468caff29d3333fba4d0ececd82063ce80d5.zip op-kernel-dev-cef7468caff29d3333fba4d0ececd82063ce80d5.tar.gz | |
usb: Add "portX/connect_type" attribute to expose usb port's connect type
Some platforms provide usb port connect types through ACPI. This
patch is to add this new attribute to expose these information
to user space.
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-usb | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-usb b/Documentation/ABI/testing/sysfs-bus-usb index b6fbe51..c8baaf5 100644 --- a/Documentation/ABI/testing/sysfs-bus-usb +++ b/Documentation/ABI/testing/sysfs-bus-usb @@ -227,3 +227,12 @@ Contact: Lan Tianyu <tianyu.lan@intel.com> Description: The /sys/bus/usb/devices/.../(hub interface)/portX is usb port device's sysfs directory. + +What: /sys/bus/usb/devices/.../(hub interface)/portX/connect_type +Date: January 2013 +Contact: Lan Tianyu <tianyu.lan@intel.com> +Description: + Some platforms provide usb port connect types through ACPI. + This attribute is to expose these information to user space. + The file will read "hotplug", "wired" and "not used" if the + information is available, and "unknown" otherwise. |
