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.\"     Title: snd_soc_dai_set_tdm_slot
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: ASoC
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "SND_SOC_DAI_SET_TDM_" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "ASoC"
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.SH "NAME"
snd_soc_dai_set_tdm_slot \- Configures a DAI for TDM operation
.SH "SYNOPSIS"
.HP \w'int\ snd_soc_dai_set_tdm_slot('u
.BI "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" ");"
.SH "ARGUMENTS"
.PP
\fIdai\fR
.RS 4
The DAI to configure
.RE
.PP
\fItx_mask\fR
.RS 4
bitmask representing active TX slots\&.
.RE
.PP
\fIrx_mask\fR
.RS 4
bitmask representing active RX slots\&.
.RE
.PP
\fIslots\fR
.RS 4
Number of slots in use\&.
.RE
.PP
\fIslot_width\fR
.RS 4
Width in bits for each slot\&.
.RE
.SH "DESCRIPTION"
.PP
This function configures the specified DAI for TDM operation\&.
\fIslot\fR
contains the total number of slots of the TDM stream and
\fIslot_with\fR
the width of each slot in bit clock cycles\&.
\fItx_mask\fR
and
\fIrx_mask\fR
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\&.
.PP
TDM mode can be disabled by passing 0 for
\fIslots\fR\&. In this case
\fItx_mask\fR,
\fIrx_mask\fR
and
\fIslot_width\fR
will be ignored\&.
.PP
Returns 0 on success, a negative error code otherwise\&.
.SH "COPYRIGHT"
.br