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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>parport_negotiate</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="ch03.html" title="Chapter 3. Parallel Port Devices" /><link rel="prev" href="re281.html" title="parport_wait_peripheral" /><link rel="next" href="re283.html" title="parport_write" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>parport_negotiate</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re281.html">Prev</a> </td><th width="60%" align="center">Chapter 3. Parallel Port Devices</th><td width="20%" align="right"> <a accesskey="n" href="re283.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="parport_negotiate"><a id="API-parport-negotiate"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>parport_negotiate —
negotiate an IEEE 1284 mode
</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">parport_negotiate </b>(</code></td><td>struct parport * <var class="pdparam">port</var>, </td></tr><tr><td> </td><td>int <var class="pdparam">mode</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id3065676"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>port</code></em></span></dt><dd><p>
port to use
</p></dd><dt><span class="term"><em class="parameter"><code>mode</code></em></span></dt><dd><p>
mode to negotiate to
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id3065720"></a><h2>Description</h2><p>
Use this to negotiate to a particular IEEE 1284 transfer mode.
The <em class="parameter"><code>mode</code></em> parameter should be one of the constants in
parport.h starting <code class="constant">IEEE1284_MODE_xxx</code>.
</p><p>
The return value is 0 if the peripheral has accepted the
negotiation to the mode specified, -1 if the peripheral is not
IEEE 1284 compliant (or not present), or 1 if the peripheral
has rejected the negotiation.
</p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="re281.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch03.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="re283.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span>parport_wait_peripheral</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span>parport_write</span></td></tr></table></div></body></html>
