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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>snd_card_create</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="Linux Device Drivers" /><link rel="up" href="ch05.html" title="Chapter 5. Sound Devices" /><link rel="prev" href="re604.html" title="snd_pcm_lib_free_pages" /><link rel="next" href="re606.html" title="snd_card_disconnect" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>snd_card_create</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re604.html">Prev</a> </td><th width="60%" align="center">Chapter 5. Sound Devices</th><td width="20%" align="right"> <a accesskey="n" href="re606.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="snd_card_create"><a id="API-snd-card-create"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>snd_card_create —
create and initialize a soundcard structure
</p></div><div class="refsynopsisdiv" title="Synopsis"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" class="funcprototype-table"><tr><td><code class="funcdef">int <b class="fsfunc">snd_card_create </b>(</code></td><td>int <var class="pdparam">idx</var>, </td></tr><tr><td> </td><td>const char * <var class="pdparam">xid</var>, </td></tr><tr><td> </td><td>struct module * <var class="pdparam">module</var>, </td></tr><tr><td> </td><td>int <var class="pdparam">extra_size</var>, </td></tr><tr><td> </td><td>struct snd_card ** <var class="pdparam">card_ret</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2682655"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>idx</code></em></span></dt><dd><p>
card index (address) [0 ... (SNDRV_CARDS-1)]
</p></dd><dt><span class="term"><em class="parameter"><code>xid</code></em></span></dt><dd><p>
card identification (ASCII string)
</p></dd><dt><span class="term"><em class="parameter"><code>module</code></em></span></dt><dd><p>
top level module for locking
</p></dd><dt><span class="term"><em class="parameter"><code>extra_size</code></em></span></dt><dd><p>
allocate this extra size after the main soundcard structure
</p></dd><dt><span class="term"><em class="parameter"><code>card_ret</code></em></span></dt><dd><p>
the pointer to store the created card instance
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2682752"></a><h2>Description</h2><p>
Creates and initializes a soundcard structure.
</p><p>
The function allocates snd_card instance via kzalloc with the given
space for the driver to use freely. The allocated struct is stored
in the given card_ret pointer.
</p><p>
Returns zero if successful or a negative error code.
</p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="re604.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch05.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="re606.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span>snd_pcm_lib_free_pages</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span>snd_card_disconnect</span></td></tr></table></div></body></html>
