1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>struct snd_dmaengine_dai_dma_data</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="The ALSA Driver API"><link rel="up" href="ch02s04.html" title="PCM DMA Engine API"><link rel="prev" href="API-snd-pcm-substream-to-dma-direction.html" title="snd_pcm_substream_to_dma_direction"><link rel="next" href="API-struct-snd-dmaengine-pcm-config.html" title="struct snd_dmaengine_pcm_config"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">struct snd_dmaengine_dai_dma_data</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-snd-pcm-substream-to-dma-direction.html">Prev</a>&#160;</td><th width="60%" align="center">PCM DMA Engine API</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-struct-snd-dmaengine-pcm-config.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-struct-snd-dmaengine-dai-dma-data"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>struct snd_dmaengine_dai_dma_data &#8212; 
2     DAI DMA configuration data
3 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="programlisting">
4struct snd_dmaengine_dai_dma_data {
5  dma_addr_t addr;
6  enum dma_slave_buswidth addr_width;
7  u32 maxburst;
8  unsigned int slave_id;
9  void * filter_data;
10  const char * chan_name;
11  unsigned int fifo_size;
12};  </pre></div><div class="refsect1"><a name="idp1094455012"></a><h2>Members</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term">addr</span></dt><dd><p>
13   Address of the DAI data source or destination register.
14      </p></dd><dt><span class="term">addr_width</span></dt><dd><p>
15   Width of the DAI data source or destination register.
16      </p></dd><dt><span class="term">maxburst</span></dt><dd><p>
17   Maximum number of words(note: words, as in units of the
18   src_addr_width member, not bytes) that can be send to or received from the
19   DAI in one burst.
20      </p></dd><dt><span class="term">slave_id</span></dt><dd><p>
21   Slave requester id for the DMA channel.
22      </p></dd><dt><span class="term">filter_data</span></dt><dd><p>
23   Custom DMA channel filter data, this will usually be used when
24   requesting the DMA channel.
25      </p></dd><dt><span class="term">chan_name</span></dt><dd><p>
26   Custom channel name to use when requesting DMA channel.
27      </p></dd><dt><span class="term">fifo_size</span></dt><dd><p>
28   FIFO size of the DAI controller in bytes
29      </p></dd></dl></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="API-snd-pcm-substream-to-dma-direction.html">Prev</a>&#160;</td><td width="20%" align="center"><a accesskey="u" href="ch02s04.html">Up</a></td><td width="40%" align="right">&#160;<a accesskey="n" href="API-struct-snd-dmaengine-pcm-config.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">snd_pcm_substream_to_dma_direction</span>&#160;</td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top">&#160;<span class="phrase">struct snd_dmaengine_pcm_config</span></td></tr></table></div></body></html>
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