1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>The ALSA Driver API</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="The ALSA Driver API"><link rel="next" href="ch01.html" title="Chapter 1. Management of Cards and Devices"></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">The ALSA Driver API</th></tr><tr><td width="20%" align="left"> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="ch01.html">Next</a></td></tr></table><hr></div><div class="book"><div class="titlepage"><div><div><h1 class="title"><a name="ALSA-Driver-API"></a>The ALSA Driver API</h1></div><div><div class="legalnotice"><a name="idp1091211020"></a><p> 2 This document is free; you can redistribute it and/or modify it 3 under the terms of the GNU General Public License as published by 4 the Free Software Foundation; either version 2 of the License, or 5 (at your option) any later version. 6 </p><p> 7 This document is distributed in the hope that it will be useful, 8 but <span class="emphasis"><em>WITHOUT ANY WARRANTY</em></span>; without even the 9 implied warranty of <span class="emphasis"><em>MERCHANTABILITY or FITNESS FOR A 10 PARTICULAR PURPOSE</em></span>. See the GNU General Public License 11 for more details. 12 </p><p> 13 You should have received a copy of the GNU General Public 14 License along with this program; if not, write to the Free 15 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, 16 MA 02111-1307 USA 17 </p></div></div></div><hr></div><div class="toc"><p><b>Table of Contents</b></p><dl class="toc"><dt><span class="chapter"><a href="ch01.html">1. Management of Cards and Devices</a></span></dt><dd><dl><dt><span class="sect1"><a href="ch01.html#idp1092749364">Card Management</a></span></dt><dt><span class="sect1"><a href="ch01s02.html">Device Components</a></span></dt><dt><span class="sect1"><a href="ch01s03.html">Module requests and Device File Entries</a></span></dt><dt><span class="sect1"><a href="ch01s04.html">Memory Management Helpers</a></span></dt></dl></dd><dt><span class="chapter"><a href="ch02.html">2. PCM API</a></span></dt><dd><dl><dt><span class="sect1"><a href="ch02.html#idp1093485324">PCM Core</a></span></dt><dt><span class="sect1"><a href="ch02s02.html">PCM Format Helpers</a></span></dt><dt><span class="sect1"><a href="ch02s03.html">PCM Memory Management</a></span></dt><dt><span class="sect1"><a href="ch02s04.html">PCM DMA Engine API</a></span></dt></dl></dd><dt><span class="chapter"><a href="ch03.html">3. Control/Mixer API</a></span></dt><dd><dl><dt><span class="sect1"><a href="ch03.html#idp1094472508">General Control Interface</a></span></dt><dt><span class="sect1"><a href="ch03s02.html">AC97 Codec API</a></span></dt><dt><span class="sect1"><a href="ch03s03.html">Virtual Master Control API</a></span></dt></dl></dd><dt><span class="chapter"><a href="ch04.html">4. MIDI API</a></span></dt><dd><dl><dt><span class="sect1"><a href="ch04.html#idp1094863404">Raw MIDI API</a></span></dt><dt><span class="sect1"><a href="ch04s02.html">MPU401-UART API</a></span></dt></dl></dd><dt><span class="chapter"><a href="ch05.html">5. Proc Info API</a></span></dt><dd><dl><dt><span class="sect1"><a href="ch05.html#idp1094995404">Proc Info Interface</a></span></dt></dl></dd><dt><span class="chapter"><a href="ch06.html">6. Compress Offload</a></span></dt><dd><dl><dt><span class="sect1"><a href="ch06.html#idp1095078220">Compress Offload API</a></span></dt></dl></dd><dt><span class="chapter"><a href="ch07.html">7. ASoC</a></span></dt><dd><dl><dt><span class="sect1"><a href="ch07.html#idp1095227164">ASoC Core API</a></span></dt><dt><span class="sect1"><a href="ch07s02.html">ASoC DAPM API</a></span></dt><dt><span class="sect1"><a href="ch07s03.html">ASoC DMA Engine API</a></span></dt></dl></dd><dt><span class="chapter"><a href="ch08.html">8. Miscellaneous Functions</a></span></dt><dd><dl><dt><span class="sect1"><a href="ch08.html#idp1096018764">Hardware-Dependent Devices API</a></span></dt><dt><span class="sect1"><a href="ch08s02.html">Jack Abstraction Layer API</a></span></dt><dt><span class="sect1"><a href="ch08s03.html">ISA DMA Helpers</a></span></dt><dt><span class="sect1"><a href="ch08s04.html">Other Helper Macros</a></span></dt></dl></dd></dl></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="ch01.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"> </td><td width="20%" align="center"> </td><td width="40%" align="right" valign="top"> Chapter 1. Management of Cards and Devices</td></tr></table></div></body></html> 18