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| author | Alexander Shishkin <alexander.shishkin@linux.intel.com> | 2015-09-22 15:47:14 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-10-04 22:28:58 +0300 |
| commit | 39f4034693b7c7bd1fe4cb58c93259d600f55561 (patch) | |
| tree | debe2c6087fd2d996dbdc6accd799522f2de25c3 /Documentation/ABI/testing/sysfs-bus-intel_th-output-devices | |
| parent | e3e5a3d3da3e68ac5a7ab0278dffec8353ca8174 (diff) | |
| download | linux-39f4034693b7c7bd1fe4cb58c93259d600f55561.tar.xz | |
intel_th: Add driver infrastructure for Intel(R) Trace Hub devices
Intel(R) Trace Hub (TH) is a set of hardware blocks (subdevices) that
produce, switch and output trace data from multiple hardware and
software sources over several types of trace output ports encoded
in System Trace Protocol (MIPI STPv2) and is intended to perform
full system debugging.
For these subdevices, we create a bus, where they can be discovered
and configured by userspace software.
This patch creates this bus infrastructure, three types of devices
(source, output, switch), resource allocation, some callback mechanisms
to facilitate communication between the subdevices' drivers and some
common sysfs attributes.
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/ABI/testing/sysfs-bus-intel_th-output-devices')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-intel_th-output-devices | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-intel_th-output-devices b/Documentation/ABI/testing/sysfs-bus-intel_th-output-devices new file mode 100644 index 000000000000..4d48a9451866 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-intel_th-output-devices @@ -0,0 +1,13 @@ +What: /sys/bus/intel_th/devices/<intel_th_id>-<device><id>/active +Date: June 2015 +KernelVersion: 4.3 +Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> +Description: (RW) Writes of 1 or 0 enable or disable trace output to this + output device. Reads return current status. + +What: /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/port +Date: June 2015 +KernelVersion: 4.3 +Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> +Description: (RO) Port number, corresponding to this output device on the + switch (GTH). |