SND_SOC_DAI_SET_TDM_(9)                        ASoC                       SND_SOC_DAI_SET_TDM_(9)



NAME
       snd_soc_dai_set_tdm_slot - Configures a DAI for TDM operation

SYNOPSIS
       int snd_soc_dai_set_tdm_slot(struct snd_soc_dai * dai, unsigned int tx_mask,
                                    unsigned int rx_mask, int slots, int slot_width);

ARGUMENTS
       dai
           The DAI to configure

       tx_mask
           bitmask representing active TX slots.

       rx_mask
           bitmask representing active RX slots.

       slots
           Number of slots in use.

       slot_width
           Width in bits for each slot.

DESCRIPTION
       This function configures the specified DAI for TDM operation.  slot contains the total
       number of slots of the TDM stream and slot_with the width of each slot in bit clock
       cycles.  tx_mask and rx_mask are bitmasks specifying the active slots of the TDM stream
       for the specified DAI, i.e. which slots the DAI should write to or read from. If a bit is
       set the corresponding slot is active, if a bit is cleared the corresponding slot is
       inactive. Bit 0 maps to the first slot, bit 1 to the second slot and so on. The first
       active slot maps to the first channel of the DAI, the second active slot to the second
       channel and so on.

       TDM mode can be disabled by passing 0 for slots. In this case tx_mask, rx_mask and
       slot_width will be ignored.

       Returns 0 on success, a negative error code otherwise.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                   SND_SOC_DAI_SET_TDM_(9)