From bfe778ac49826ced3dceb6416038e1cd887ce2bd Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Tue, 6 Jun 2017 15:25:01 +0300 Subject: thunderbolt: Convert switch to a device Thunderbolt domain consists of switches that are connected to each other, forming a bus. This will convert each switch into a real Linux device structure and adds them to the domain. The advantage here is that we get all the goodies from the driver core, like reference counting and sysfs hierarchy for free. Also expose device identification information to the userspace via new sysfs attributes. In order to support internal connection manager (ICM) we separate switch configuration into its own function (tb_switch_configure()) which is only called by the existing native connection manager implementation used on Macs. Signed-off-by: Mika Westerberg Reviewed-by: Yehezkel Bernat Reviewed-by: Michael Jamet Reviewed-by: Andy Shevchenko Signed-off-by: Andreas Noever Signed-off-by: Greg Kroah-Hartman --- Documentation/ABI/testing/sysfs-bus-thunderbolt | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-bus-thunderbolt (limited to 'Documentation/ABI/testing/sysfs-bus-thunderbolt') diff --git a/Documentation/ABI/testing/sysfs-bus-thunderbolt b/Documentation/ABI/testing/sysfs-bus-thunderbolt new file mode 100644 index 000000000000..9f1bd0086938 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-thunderbolt @@ -0,0 +1,22 @@ +What: /sys/bus/thunderbolt/devices/.../device +Date: Sep 2017 +KernelVersion: 4.13 +Contact: thunderbolt-software@lists.01.org +Description: This attribute contains id of this device extracted from + the device DROM. + +What: /sys/bus/thunderbolt/devices/.../vendor +Date: Sep 2017 +KernelVersion: 4.13 +Contact: thunderbolt-software@lists.01.org +Description: This attribute contains vendor id of this device extracted + from the device DROM. + +What: /sys/bus/thunderbolt/devices/.../unique_id +Date: Sep 2017 +KernelVersion: 4.13 +Contact: thunderbolt-software@lists.01.org +Description: This attribute contains unique_id string of this device. + This is either read from hardware registers (UUID on + newer hardware) or based on UID from the device DROM. + Can be used to uniquely identify particular device. -- cgit v1.2.3