• Dharageswari R's avatar
    ASoC: Intel: Skylake: Add module instance id generation APIs · 700a9a63
    Dharageswari R authored
    Driver needs to send unique module instance id to firmware while
    creating the module and uses this id to communicate with DSP for setting
    parameters while audio use case is ongoing.
    
    But, we have upper bound of instance ID. The current IDs are coming from
    topology but it doesn't know the upper bound and can't assign unique
    id's subject to upper bounds as we can create a big graph but not all
    parts running at same time.
    
    This patch adds a 128bit unique id management routines which are built
    on top of ffz() for faster implementation. Unfortunately ffz() works on
    32bits values, so additional code is added on top of ffz() to create a
    128bit unique id.
    Signed-off-by: default avatarDharageswari R <dharageswari.r@intel.com>
    Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
    Signed-off-by: default avatarMark Brown <broonie@kernel.org>
    700a9a63
skl-topology.h 8.14 KB