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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>input_ff_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="ch08.html" title="Chapter 8. Input Subsystem" /><link rel="prev" href="re731.html" title="input_ff_event" /><link rel="next" href="re733.html" title="input_ff_destroy" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>input_ff_create</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re731.html">Prev</a> </td><th width="60%" align="center">Chapter 8. Input Subsystem</th><td width="20%" align="right"> <a accesskey="n" href="re733.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="input_ff_create"><a id="API-input-ff-create"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>input_ff_create —
create force-feedback device
</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">input_ff_create </b>(</code></td><td>struct input_dev * <var class="pdparam">dev</var>, </td></tr><tr><td> </td><td>int <var class="pdparam">max_effects</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id3134689"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>dev</code></em></span></dt><dd><p>
input device supporting force-feedback
</p></dd><dt><span class="term"><em class="parameter"><code>max_effects</code></em></span></dt><dd><p>
maximum number of effects supported by the device
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id3134733"></a><h2>Description</h2><p>
This function allocates all necessary memory for a force feedback
portion of an input device and installs all default handlers.
<em class="parameter"><code>dev</code></em>->ffbit should be already set up before calling this function.
Once ff device is created you need to setup its upload, erase,
playback and other handlers before registering input device
</p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="re731.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch08.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="re733.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span>input_ff_event</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span>input_ff_destroy</span></td></tr></table></div></body></html>
