1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>drivers directory</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="Writing an ALSA Driver"><link rel="up" href="file-tree.html" title="Chapter&#160;1.&#160;File Tree Structure"><link rel="prev" href="file-tree-include-directory.html" title="include directory"><link rel="next" href="file-tree-i2c-directory.html" title="i2c directory"></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">drivers directory</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="file-tree-include-directory.html">Prev</a>&#160;</td><th width="60%" align="center">Chapter&#160;1.&#160;File Tree Structure</th><td width="20%" align="right">&#160;<a accesskey="n" href="file-tree-i2c-directory.html">Next</a></td></tr></table><hr></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="file-tree-drivers-directory"></a>drivers directory</h2></div></div></div><div class="toc"><dl class="toc"><dt><span class="section"><a href="file-tree-drivers-directory.html#file-tree-drivers-directory-mpu401">drivers/mpu401</a></span></dt><dt><span class="section"><a href="file-tree-drivers-directory.html#file-tree-drivers-directory-opl3">drivers/opl3 and opl4</a></span></dt></dl></div><p>
2        This directory contains code shared among different drivers
3      on different architectures.  They are hence supposed not to be
4      architecture-specific.
5      For example, the dummy pcm driver and the serial MIDI
6      driver are found in this directory. In the sub-directories,
7      there is code for components which are independent from
8      bus and cpu architectures. 
9      </p><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="file-tree-drivers-directory-mpu401"></a>drivers/mpu401</h3></div></div></div><p>
10          The MPU401 and MPU401-UART modules are stored here.
11        </p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="file-tree-drivers-directory-opl3"></a>drivers/opl3 and opl4</h3></div></div></div><p>
12          The OPL3 and OPL4 FM-synth stuff is found here.
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