1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>struct drm_dp_aux_msg</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="Linux DRM Developer's Guide"><link rel="up" href="ch02s05.html#idp1125808116" title="Display Port Helper Functions Reference"><link rel="prev" href="API-struct-drm-fb-helper-funcs.html" title="struct drm_fb_helper_funcs"><link rel="next" href="API-struct-drm-dp-aux.html" title="struct drm_dp_aux"></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"><span class="phrase">struct drm_dp_aux_msg</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-struct-drm-fb-helper-funcs.html">Prev</a>&#160;</td><th width="60%" align="center">Display Port Helper Functions Reference</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-struct-drm-dp-aux.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-struct-drm-dp-aux-msg"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>struct drm_dp_aux_msg &#8212; 
2  DisplayPort AUX channel transaction
3 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="programlisting">
4struct drm_dp_aux_msg {
5  unsigned int address;
6  u8 request;
7  u8 reply;
8  void * buffer;
9  size_t size;
10};  </pre></div><div class="refsect1"><a name="idp1125814332"></a><h2>Members</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term">address</span></dt><dd><p>
11address of the (first) register to access
12      </p></dd><dt><span class="term">request</span></dt><dd><p>
13contains the type of transaction (see DP_AUX_* macros)
14      </p></dd><dt><span class="term">reply</span></dt><dd><p>
15upon completion, contains the reply type of the transaction
16      </p></dd><dt><span class="term">buffer</span></dt><dd><p>
17pointer to a transmission or reception buffer
18      </p></dd><dt><span class="term">size</span></dt><dd><p>
19size of <em class="parameter"><code>buffer</code></em>
20      </p></dd></dl></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="API-struct-drm-fb-helper-funcs.html">Prev</a>&#160;</td><td width="20%" align="center"><a accesskey="u" href="ch02s05.html#idp1125808116">Up</a></td><td width="40%" align="right">&#160;<a accesskey="n" href="API-struct-drm-dp-aux.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">struct drm_fb_helper_funcs</span>&#160;</td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top">&#160;<span class="phrase">struct drm_dp_aux</span></td></tr></table></div></body></html>
21