'\" t .\" Title: snd_dmaengine_pcm_request_channel .\" Author: [FIXME: author] [see http://docbook.sf.net/el/author] .\" Generator: DocBook XSL Stylesheets v1.79.1 .\" Date: January 2017 .\" Manual: PCM API .\" Source: Kernel Hackers Manual 4.8.15 .\" Language: English .\" .TH "SND_DMAENGINE_PCM_RE" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "PCM API" .\" ----------------------------------------------------------------- .\" * Define some portability stuff .\" ----------------------------------------------------------------- .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .\" http://bugs.debian.org/507673 .\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .ie \n(.g .ds Aq \(aq .el .ds Aq ' .\" ----------------------------------------------------------------- .\" * set default formatting .\" ----------------------------------------------------------------- .\" disable hyphenation .nh .\" disable justification (adjust text to left margin only) .ad l .\" ----------------------------------------------------------------- .\" * MAIN CONTENT STARTS HERE * .\" ----------------------------------------------------------------- .SH "NAME" snd_dmaengine_pcm_request_channel \- Request channel for the dmaengine PCM .SH "SYNOPSIS" .HP \w'struct\ dma_chan\ *\ snd_dmaengine_pcm_request_channel('u .BI "struct dma_chan * snd_dmaengine_pcm_request_channel(dma_filter_fn\ " "filter_fn" ", void\ *\ " "filter_data" ");" .SH "ARGUMENTS" .PP \fIfilter_fn\fR .RS 4 Filter function used to request the DMA channel .RE .PP \fIfilter_data\fR .RS 4 Data passed to the DMA filter function .RE .SH "DESCRIPTION" .PP Returns NULL or the requested DMA channel\&. .PP This function request a DMA channel for usage with dmaengine PCM\&. .SH "COPYRIGHT" .br