• Xiubo Li's avatar
    ASoC: core: add TDM slot parsing from DT supports · 89c67857
    Xiubo Li authored
    For some CPU/CODEC DAI devices the TDM slot infomation maybe needed. This
    patch adds the slot parsing from DT supports.
    
    TDM slot properties:
        dai-tdm-slot-num : Number of slots in use.
        dai-tdm-slot-width :  Width in bits for each slot.
    
    For instance:
        dai-tdm-slot-num = <2>;
        dai-tdm-slot-width = <8>;
    
    And for each spcified driver, there could be one .of_xlate_tdm_slot_mask()
    to specify a explicit mapping of the channels and the slots. If it's absent
    the default snd_soc_of_xlate_tdm_slot_mask() will be used to generating the
    tx and rx masks.
    
    For snd_soc_of_xlate_tdm_slot_mask(), the tx and rx masks will use a 1 bit
    for an active slot as default, and the default active bits are at the LSB of
    the masks.
    Signed-off-by: default avatarXiubo Li <Li.Xiubo@freescale.com>
    Signed-off-by: default avatarMark Brown <broonie@linaro.org>
    89c67857
soc-core.c 121 KB