• Pratik Patel's avatar
    coresight: add CoreSight core layer framework · a06ae860
    Pratik Patel authored
    CoreSight components are compliant with the ARM CoreSight
    architecture specification and can be connected in various
    topologies to suit a particular SoC tracing needs. These trace
    components can generally be classified as sources, links and
    sinks. Trace data produced by one or more sources flows through
    the intermediate links connecting the source to the currently
    selected sink.
    The CoreSight framework provides an interface for the CoreSight trace
    drivers to register themselves with. It's intended to build up a
    topological view of the CoreSight components and configure the
    correct serie of components on user input via sysfs.
    For eg., when enabling a source, the framework builds up a path
    consisting of all the components connecting the source to the
    currently selected sink(s) and enables all of them.
    The framework also supports switching between available sinks
    and provides status information to user space applications
    through the debugfs interface.
    Signed-off-by: default avatarPratik Patel <pratikp@codeaurora.org>
    Signed-off-by: default avatarMathieu Poirier <mathieu.poirier@linaro.org>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Makefile 4.56 KB