• Piotr Stankiewicz's avatar
    ASoC: dapm: support user-defined stop condition in dai_get_connected_widgets · 6742064a
    Piotr Stankiewicz authored
    Certain situations may warrant examining DAPM paths only to a certain
    arbitrary point, as opposed to always following them to the end. For
    instance, when establishing a connection between a front-end DAI link
    and a back-end DAI link in a DPCM path, it does not make sense to walk
    the DAPM graph beyond the first widget associated with a back-end link.
    
    This patch introduces a mechanism which lets a user of
    dai_get_connected_widgets supply a function which will be called for
    every node during the graph walk. When invoked, this function can
    execute arbitrary logic to decide whether the walk, given a DAPM widget
    and walk direction, should be terminated at that point or continued
    as normal.
    Signed-off-by: default avatarPiotr Stankiewicz <piotrs@opensource.wolfsonmicro.com>
    Signed-off-by: default avatarMark Brown <broonie@kernel.org>
    6742064a
soc-dapm.h 29.6 KB