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    ASoC: Extend DAPM to handle power changes on cross-device paths · 7be31be8
    Jarkko Nikula 提交于
    Power change event like stream start/stop or kcontrol change in a
    cross-device path originates from one device but codec bias and widget power
    changes must be populated to another devices on that path as well.
    
    This patch modifies the dapm_power_widgets so that all the widgets on a
    sound card are checked for a power change, not just those that are specific
    to originating device. Also bias management is extended to check all the
    devices. Only exception in bias management are widgetless codecs whose bias
    state is changed only if power change is originating from that context.
    
    DAPM context test is added to dapm_seq_run to take care of if power sequence
    extends to an another device which requires separate register writes.
    Signed-off-by: NJarkko Nikula <jhnikula@gmail.com>
    Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk>
    Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
    7be31be8
soc-dapm.c 59.1 KB